CN114061850A

CN114061850A - Rotary type sealing performance testing equipment, method and processing method

Info

Publication number: CN114061850A
Application number: CN202010747137.9A
Authority: CN
Inventors: 李波; 姜德志
Original assignee: Upton Automation Systems Guangzhou Co ltd
Current assignee: Upton Automation Systems Guangzhou Co ltd
Priority date: 2020-07-29
Filing date: 2020-07-29
Publication date: 2022-02-18

Abstract

The invention discloses a rotary type tightness testing device, a method and a processing method, comprising at least one air tightness testing structure, wherein the air tightness testing structure comprises a main shell and a rotating body; an accommodating chamber is arranged in the main shell, and an air inlet/exhaust channel and a test channel which are respectively communicated with the accommodating chamber are arranged on the main shell; the rotating body is arranged in the accommodating cavity and can rotate relative to the main shell; the rotating body is internally provided with an air channel, and two ends of the air channel are provided with a first connecting port and a second connecting port which are respectively communicated with the accommodating cavity; also included is a sealing structure. The device is used for testing the air tightness of the non-sealed product and has the characteristics of simple structure, convenience in processing and assembling and good testing precision; further, the air tightness test requirement and batch application of the non-sealing product can be met.

Description

Rotary type sealing performance testing equipment, method and processing method

Technical Field

The invention relates to an air tightness test structure, in particular to rotary type tightness test equipment, a rotary type tightness test method and a rotary type tightness test processing method which are suitable for non-sealed products.

Background

The tightness of the product means that the product does not leak outwards or is penetrated by external media in use. In the prior art, the chinese patent with application number 201910334704.5 discloses a differential pressure type air tightness tester and a test method, wherein the differential pressure type air tightness tester comprises an air source interface, an air charging/sucking valve, an air discharging valve, a first pressure retaining valve, a second pressure retaining valve, a differential pressure sensor, a first pressure dividing valve, a second pressure dividing valve, a tested object interface, a reference object interface, a first pressure dividing tank and a second pressure dividing tank; the air source interface is connected with the air charging/sucking valve, and the air outlet end of the air charging/sucking valve is respectively connected with the first pressure retaining valve, the second pressure retaining valve and the air release valve; the first pressure retaining valve is connected with an interface of a measured object; the second pressure retaining valve is connected with the reference object interface; one end of the differential pressure sensor is connected between the first pressure retaining valve and the interface of the measured object, and the other end of the differential pressure sensor is connected between the second pressure retaining valve and the interface of the reference object; one end of the first pressure dividing valve is connected between the first pressure maintaining valve and the interface of the measured object, and the other end of the first pressure dividing valve is connected with the first pressure dividing tank; one end of the second partial pressure valve is connected between the second pressure retaining valve and the reference object interface, and the other end of the second partial pressure valve is connected with the second partial pressure tank. The testing gas circuit with the structure has the defects of complex structure, difficult processing, difficult assembly and large volume of the content cavity, so that the cost is high, the efficiency is low, and higher testing requirements and batch application are difficult to meet.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide rotary type tightness testing equipment which is used for testing the air tightness of a non-sealed product and has the characteristics of simple structure, convenience in processing and assembling and good testing precision; further, the air tightness test requirement and batch application of the non-sealing product can be met.

The second purpose of the invention is to provide a testing method of the rotary type tightness testing equipment, which has the characteristics of good testing precision, convenient operation, high working efficiency and low labor cost.

The invention also aims to provide a processing method of the rotary type tightness testing equipment, which has the characteristics of convenience in processing and simplicity in assembly and solves the processing problems of an accommodating chamber, an air passage and a sealing groove in a shell and the assembly problems of a sealing element.

One of the purposes of the invention is realized by adopting the following technical scheme:

a rotary type tightness test device is characterized by comprising at least one air tightness test structure, wherein the air tightness test structure comprises a main shell and a rotating body;

an accommodating chamber is arranged in the main shell, and an air inlet/exhaust channel and a test channel which are respectively communicated with the accommodating chamber are arranged on the main shell;

the rotating body is arranged in the accommodating cavity and can rotate relative to the main shell; the rotating body is internally provided with an air channel, and two ends of the air channel are provided with a first connecting port and a second connecting port which are respectively communicated with the accommodating cavity;

the device also comprises a sealing structure;

during the process that the rotating body rotates anticlockwise or clockwise relative to the shell, the air tightness test structure simultaneously meets the following conditions:

the first condition is as follows: the first connecting port of the air path channel is in butt-joint communication with the air inlet/outlet channel, the joint between the first connecting port and the air inlet/outlet channel is sealed by the sealing structure, the second connecting port of the air path channel is in butt-joint communication with the testing channel, and the joint between the second connecting port and the testing channel is sealed by the sealing structure, so that the air inlet/outlet channel, the air path channel and the testing channel are sequentially communicated to form a sealed air charging/sucking channel;

and a second condition: the first connecting port of the air channel is disconnected with the air inlet/exhaust channel in a staggered manner, the second connecting port of the air channel is disconnected with the test channel in a staggered manner, one port of the test channel is closed, and the other port of the test channel is used for forming a sealed air tightness test channel with a product to be tested.

In an alternative embodiment, the sealing structure comprises sealing rings respectively arranged at the openings of the air inlet/outlet channel and the testing channel adjacent to one side of the accommodating chamber;

in the alternative, the first and second sets of the first and second sets of the first and second sets of the first and second sets of the first and second sets of the first and second sets of the second,

the sealing structure comprises a sealing sleeve sleeved on the periphery of the rotating body, a first through hole and a second through hole are formed in the side wall of the sealing sleeve, the first through hole is communicated with a first connecting port of the air channel, and the second through hole is communicated with a second connecting port of the air channel.

In an optional embodiment, the main housing is further provided with an exhaust passage communicated with the accommodating chamber; during the process that the rotating body rotates along the anticlockwise or clockwise direction relative to the shell, the air tightness test structure simultaneously meets the following conditions:

and (3) carrying out a third condition: the first connecting port of the air path channel is in butt-joint communication with the testing channel, the joint between the first connecting port and the testing channel is sealed through the sealing structure, the second connecting port of the air path channel is in butt-joint communication with the exhaust channel, and the joint between the second connecting port and the exhaust channel is sealed through the sealing structure, so that the testing channel, the air path channel and the exhaust channel are sequentially communicated to form a sealed testing exhaust channel.

In an alternative embodiment, the sealing structure comprises sealing rings respectively arranged at the openings of the air inlet/outlet channel, the testing channel and the air outlet channel adjacent to one side of the accommodating chamber;

In an optional embodiment, the test device further comprises a sealing connector, wherein the sealing connector is provided with a first sealing interface and a second sealing interface, the first sealing interface is in sealing connection with an opening of the test channel on the side far away from the containing chamber, and the second sealing interface is used for being in sealing connection with an air inlet of a product to be tested; when one port of the test channel is closed, the other port of the test channel is communicated with a product to be tested through the sealing connector to form the air tightness test channel.

In an alternative embodiment, the rotating body further includes a rotating shaft extending axially outward from a center of the rotating body; still be equipped with actuating mechanism on the main casing body, actuating mechanism's output shaft with pivot fixed connection is rotatory by actuating mechanism drive pivot, drives the rotator by the pivot again along clockwise or anticlockwise rotation.

In an alternative embodiment, the test device further comprises a pressure sensor for detecting the air pressure in the air tightness test channel.

In an optional embodiment, the air tightness test structure comprises more than two groups of air path structures, and each air path structure consists of an air inlet/exhaust channel, an air path channel and a test channel; the air tightness test structure meets any one of the following test modes:

the first test mode is as follows: each two groups of the gas circuit structures are used in parallel, wherein one group of the gas circuit structures are used for testing a non-sealed product to be tested, the other group of the gas circuit structures are used for testing a standard non-sealed product, and the two groups of the gas circuit structures are both provided with pressure sensors for detecting the air pressure in the air tightness testing channel to form a pressure difference comparison gas circuit;

and a second test mode: in all the gas circuit structures, one group of gas circuit structures are used for testing standard non-sealing products, and the rest gas circuit structures are respectively used for testing the non-sealing products to be tested; each group of gas circuit structures is provided with a pressure sensor for detecting the gas pressure in the gas tightness test channel;

and a third test mode: all the gas circuit structures are respectively used for testing the non-sealing product to be tested; each group of gas circuit structures is provided with a pressure sensor for detecting the gas pressure in the gas tightness test channel;

the air tightness test structure comprises a group of air path structures, and each air path structure consists of an air inlet/exhaust channel, a test channel and an air path channel; the number of the air tightness test structures is more than two; the air tightness test structure meets any one of the following test modes:

the first test mode is as follows: each two air tightness test structures are used in parallel, wherein one air tightness test structure is used for testing a to-be-tested non-sealed product, the other air tightness test structure is used for testing a standard non-sealed product, and the air path structures of the two air tightness test structures are both provided with pressure sensors for detecting air pressure in the air tightness test channels to form a pressure difference comparison air path;

and a second test mode: one air tightness test structure is used for testing a standard non-sealing product, and the rest air tightness test structures are respectively used for testing the non-sealing product to be tested; each air tightness testing structure is provided with a pressure sensor for detecting air pressure in the air tightness testing channel;

and a third test mode: all the air tightness test structures are respectively used for testing the non-sealed product to be tested; and a pressure sensor for detecting air pressure in the air tightness testing channel is arranged in the air path structure of each air tightness testing structure.

In an optional embodiment, the air tightness test structure comprises more than two groups of air path structures, and each air path structure consists of an air inlet/exhaust channel, a test channel, an exhaust channel and an air path channel; the air tightness test structure meets any one of the following test modes:

the air tightness test structure comprises a group of air path structures, and each air path structure consists of an air inlet/exhaust channel, a test channel, an exhaust channel and an air path channel; the number of the air tightness test structures is more than two; the air tightness test structure meets any one of the following test modes:

In an alternative embodiment, a differential pressure sensor is further disposed between each two sets of pressure sensors of the air path structure.

In an optional embodiment, the device further comprises an air source device connected with the air inlet/outlet channel; the air source device is a vacuum pumping device or an air charging/sucking pressurizing device.

In an optional embodiment, the device further comprises a constant volume type pressure generating device connected with the air inlet/outlet channel.

In an alternative embodiment, the main housing is a split structure, and includes more than two sub-housings, and the sub-housings are fixedly connected with each other in a detachable connection manner.

In an alternative embodiment, the receiving chamber is circular in shape, and the rotating body is circular in shape.

In an alternative embodiment, two channels with an included angle F and a depth equal to the radius of the inner rotating shaft body are machined on the same radial plane of the rotating body in the radial direction, and the two channels penetrate through the shaft center to form the air passage channel.

In an alternative embodiment, the inlet/outlet channel, the test channel, the exhaust channel and the gas circuit channel are located on the same vertical plane; the air inlet/outlet channel and the test channel form an included angle a, the test channel and the air outlet channel form an included angle b, wherein 0 degrees < a <120 degrees, and a is b.

In an alternative embodiment, the air passage channel is L-shaped, the air passage channel includes a first channel and a second channel, a joint of the first channel and the second channel is located at a central position of the rotating body, an included angle c is formed between the first channel and the second channel of the air passage channel, and a-b-F-90 °.

The second purpose of the invention is realized by adopting the following technical scheme:

a testing method of rotary type tightness testing equipment is characterized by comprising the following steps:

1) testing a single non-sealing product:

1-1) preparation steps: the non-sealing product to be tested is hermetically connected with the testing channel through a sealing connector, and the air source device is connected with the air inlet/outlet channel;

1-2) a charging/sucking step; the rotating body or the main shell is driven to rotate counterclockwise or clockwise by a preset angle, so that a first connecting port of the air channel is in butt joint communication with the air inlet/outlet channel, a second connecting port of the air channel is in butt joint communication with the testing channel, and the air inlet/outlet channel, the air channel, the testing channel and the sealing connector are sequentially communicated to form a sealed air charging/sucking channel; pressurizing or vacuumizing the non-sealed product to be tested, recording the pressure value as P1 after a preset time or reaching a preset pressure, and stopping pressurizing or vacuumizing;

1-3) air tightness testing; continuously driving the rotating body or the main shell to rotate in the same direction by a preset angle, wherein the first connecting port of the air channel is disconnected with the air inlet/exhaust channel in a staggered manner, the second connecting port of the air channel is disconnected with the testing channel in a staggered manner, one port of the testing channel is closed, and the other port of the testing channel is communicated with a to-be-tested non-sealed product through the sealing connector to form a sealed air tightness testing channel; after the preset pressure maintaining time, detecting a pressure value in the test cavity, and recording the pressure value as P2; comparing the pressure difference between P2 and P1, and if the pressure difference exceeds a specified range, judging that the non-sealing product to be detected is an air-tightness unqualified product; and if the pressure difference value is within the specified range, judging that the non-sealing product to be detected is an air-tightness qualified product.

In an alternative embodiment of the method according to the invention,

in the single non-sealing product testing step, after the air tightness testing step is completed, the method further comprises the following steps:

1-4) an air exhausting step: continuously driving the rotating body to rotate in the same direction for a preset angle, so that the first connecting port of the air channel is in butt joint communication with the test channel, the joint between the first connecting port and the test channel is sealed by the sealing structure, the second connecting port of the air channel is in butt joint communication with the exhaust channel, and the joint between the second connecting port and the exhaust channel is sealed by the sealing structure, so that the test channel, the air channel and the exhaust channel are sequentially communicated to form a sealed test exhaust channel; the gas in the gas tightness test channel is exhausted through the test exhaust channel.

1) and (3) a double-non-sealing product comparison test step:

the preparation method comprises the following steps: the non-sealing product to be tested and the standard non-sealing product are respectively connected with a testing channel in a sealing way through a sealing connector, and two air source devices are respectively connected with the air inlet/exhaust channels of the two air tightness testing structures; the same test steps are adopted for the non-sealing product to be tested and the standard non-sealing product;

and (3) charging/sucking: the rotating body or the main shell is driven to rotate counterclockwise or clockwise by a preset angle, so that a first connecting port of the air channel is in butt joint communication with the air inlet/outlet channel, a second connecting port of the air channel is in butt joint communication with the testing channel, and the air inlet/outlet channel, the air channel, the testing channel and the sealing connector are sequentially communicated to form a sealed air charging/sucking channel; respectively pressurizing or vacuumizing the non-sealing product to be tested and the standard non-sealing product, and stopping pressurizing or vacuumizing after preset time or preset pressure is reached;

and (3) air tightness testing: continuously driving the rotating body or the main shell to rotate in the same direction by a preset angle, wherein a first connecting port of the air channel is disconnected with the air inlet/exhaust channel in a staggered manner, a second connecting port of the air channel is disconnected with the testing channel in a staggered manner, one port of the testing channel is closed, and the other port of the testing channel is communicated with a to-be-tested non-sealing product or a standard non-sealing product through a sealing connector to form a sealed air tightness testing channel; after the preset pressure maintaining time, respectively detecting pressure values in the two air tightness testing channels, comparing the pressure difference values in the two air tightness testing channels, and if the pressure difference value exceeds a specified range, judging that the non-sealing product to be tested is an air tightness unqualified product; and if the pressure difference value is within the specified range, judging that the non-sealing product to be detected is an air-tightness qualified product.

In an alternative embodiment, after the step of performing the air-tightness test, the method further includes:

and (3) exhausting: continuously driving the rotating body to rotate in the same direction for a preset angle, so that the first connecting port of the air channel is in butt joint communication with the test channel, the joint between the first connecting port and the test channel is sealed by the sealing structure, the second connecting port of the air channel is in butt joint communication with the exhaust channel, and the joint between the second connecting port and the exhaust channel is sealed by the sealing structure, so that the test channel, the air channel and the exhaust channel are sequentially communicated to form a sealed test exhaust channel; the gas in the gas tightness test channel is exhausted through the test exhaust channel.

In an optional implementation manner, a differential pressure sensor is further disposed between the two sets of pressure sensors of the gas path structure, and a pressure difference value in the two air tightness test channels is obtained through detection of the differential pressure sensor.

1) testing a constant-volume inflatable single non-sealing product:

1-1) preparation steps: the non-sealing product to be tested is hermetically connected with the testing channel through a sealing connector, and the constant volume type pressure generating device is connected with the air inlet/exhaust channel;

1-2) an injection step; the rotating body or the main shell is driven to rotate counterclockwise or clockwise by a preset angle, so that a first connecting port of the air channel is in butt joint communication with the air inlet/outlet channel, a second connecting port of the air channel is in butt joint communication with the testing channel, and the air inlet/outlet channel, the air channel, the sealing connector and the to-be-tested non-sealed product are sequentially communicated to form a sealed air charging/sucking channel; after the piston of the constant volume type pressure generating device is pushed to a preset position, stopping pushing the piston of the constant volume type pressure generating device; detecting a pressure value in the test chamber, recording the pressure value as P21;

1-3) air tightness testing step: continuously driving the rotating body or the main shell to rotate in the same direction by a preset angle, wherein the first connecting port of the air channel is disconnected with the air inlet/exhaust channel in a staggered manner, the second connecting port of the air channel is disconnected with the testing channel in a staggered manner, one port of the testing channel is closed, and the other port of the testing channel is communicated with a to-be-tested non-sealed product through the sealing connector to form a sealed air tightness testing channel; after the preset pressure maintaining time, detecting a pressure value in the air tightness testing channel, and recording the pressure value as P22; comparing the pressure difference between P22 and P21, and if the pressure difference exceeds a specified range, judging that the non-sealing product to be detected is an air-tightness unqualified product; and if the pressure difference value is within the specified range, judging that the non-sealing product to be detected is an air-tightness qualified product.

In the single non-sealing article test procedure of constant volume inflatable, after accomplishing the gas tightness test procedure, still include:

the comparison test step of the constant volume inflatable double-non-sealing product comprises the following steps:

the preparation method comprises the following steps: the non-sealing product to be tested and the standard non-sealing product are respectively connected with a testing channel in a sealing way through a sealing connector, and the two constant volume type pressure generating devices are respectively connected with the air inlet/exhaust channels of the two groups of air path structures; the same test steps are adopted for the non-sealing product to be tested and the standard non-sealing product;

an injection step; the rotating body or the main shell is driven to rotate counterclockwise or clockwise by a preset angle, so that a first connecting port of the air channel is in butt joint communication with the air inlet/outlet channel, a second connecting port of the air channel is in butt joint communication with the testing channel, and the air inlet/outlet channel, the air channel, the sealing connector and the to-be-tested non-sealed product are sequentially communicated to form a sealed air charging/sucking channel; after the pistons of the two constant volume type pressure generating devices are respectively pushed to the same preset positions, stopping pushing the pistons of the constant volume type pressure generating devices;

The third purpose of the invention is realized by adopting the following technical scheme:

the processing method of the rotary type tightness testing equipment is characterized by comprising the following steps of:

a main shell processing step: providing a main shell base body, and processing an accommodating chamber on the main shell base body; then cutting the main shell body at a position corresponding to the accommodating cavity, and dividing the main shell body into more than two sub-shells; processing an air inlet/exhaust channel and a test channel on the sub-shell, and respectively processing an annular sealing groove at the openings of the air inlet/exhaust channel and the test channel, which are close to one side of the accommodating chamber;

a rotating body processing step: providing a rotating body base body, and processing an air path channel with a first connecting port and a second connecting port at two ends in the rotating body base body to obtain a rotating body;

assembling: and respectively installing a sealing ring in the sealing grooves of the air inlet/exhaust channel and the test channel, assembling more than two sub-shells in a detachable and fixed connection mode to form a main shell, and installing the rotating body in an accommodating chamber of the main shell.

a main shell processing step: providing a main shell base body, and processing an accommodating chamber on the main shell base body; then cutting the main shell body at a position corresponding to the accommodating cavity, and dividing the main shell body into more than two sub-shells; processing an air inlet/outlet channel, a test channel and an air outlet channel on the sub-shell, and respectively processing an annular sealing groove at the opening of the air inlet/outlet channel, the opening of the test channel and the opening of the air outlet channel, which are close to one side of the accommodating chamber;

assembling: and respectively installing a sealing ring in the sealing grooves of the air inlet/exhaust channel, the test channel and the exhaust channel, then assembling more than two sub-shells in a detachable and fixed connection mode to form a main shell, and installing the rotating body in an accommodating chamber of the main shell.

a main shell processing step: providing a main shell base body, and processing an accommodating chamber on the main shell base body; then cutting the main shell body at a position corresponding to the accommodating cavity, and dividing the main shell body into more than two sub-shells; processing an air inlet/exhaust channel and a test channel on the sub-shell;

assembling: the periphery of the rotating body is provided with a sealing sleeve, more than two sub-shells are assembled in a detachable and fixed connection mode to form a main shell, and the rotating body is arranged in the accommodating cavity of the main shell.

a main shell processing step: providing a main shell base body, and processing an accommodating chamber on the main shell base body; then cutting the main shell body at a position corresponding to the accommodating cavity, and dividing the main shell body into more than two sub-shells; processing an air inlet/exhaust channel, a test channel and an exhaust channel on the sub-shell;

Compared with the prior art, the invention has the beneficial effects that:

1. the invention comprises a main shell, a rotating body and a sealing structure; during the process that the rotating body rotates anticlockwise or clockwise relative to the shell, the air tightness test structure simultaneously meets the following conditions: the first condition is as follows: the first connecting port of the air path channel is in butt-joint communication with the air inlet/outlet channel, the joint between the first connecting port and the air inlet/outlet channel is sealed by a sealing structure, the second connecting port of the air path channel is in butt-joint communication with the testing channel, and the joint between the first connecting port and the testing channel is sealed by a sealing structure, so that the air inlet/outlet channel, the air path channel and the testing channel are sequentially communicated to form a sealed air charging/sucking channel; and a second condition: the first connecting port of the air channel is disconnected with the air inlet/exhaust channel in a staggered manner, the second connecting port of the air channel is disconnected with the test channel in a staggered manner, one port of the test channel is closed, and the other port of the test channel is used for forming a sealed air tightness test channel with a product to be tested; the device is used for carrying out the gas tightness test to non-sealed article, adopts the rotator to realize the switching between each passageway, need not set up solenoid valve and relevant pipe fitting accessory on too much valve pipeline formula test circuit, has simple structure, processing and convenient assembling, the measuring accuracy is good and convenient operation's advantage. The traditional valve pipeline type test loop cannot achieve ultra-small volume of a chip test level, and the device meets the air tightness test requirement and batch application of non-sealed products.

2. The main shell of the invention is also provided with an exhaust channel communicated with the containing chamber; in the process that the rotating body rotates anticlockwise or clockwise relative to the shell, the air tightness testing structure meets the first condition and the second condition, and simultaneously meets the third condition: the first connecting port of the air channel is in butt-joint communication with the testing channel, the joint between the first connecting port and the testing channel is sealed through a sealing structure, the second connecting port of the air channel is in butt-joint communication with the exhaust channel, and the joint between the second connecting port and the exhaust channel is sealed through a sealing structure, so that the testing channel, the air channel and the exhaust channel are sequentially communicated to form a sealed testing exhaust channel. The design just can be with the gas escape in the gas tightness test passageway through the rotation of drive rotator, need not frequently to operate various control valves, has convenient operation, work efficiency height, advantage that the cost of labor is low.

3. The rotating body of the invention also comprises a rotating shaft which extends outwards from the center of the rotating body along the axial direction; the main shell is also provided with a driving mechanism, an output shaft of the driving mechanism is fixedly connected with the rotating shaft, the rotating shaft is driven to rotate by the driving mechanism, and then the rotating body is driven by the rotating shaft to rotate clockwise or anticlockwise. Preferably, the drive mechanism is a servo motor. By the design, the automatic control of the rotating body can be realized, the accuracy of the rotating angle is ensured, and the labor intensity is reduced.

4. The air tightness test structure comprises more than two groups of air path structures, wherein each two groups of air path structures are used in parallel, one group is used for testing a to-be-tested non-sealing product, and the other group is used for testing a standard non-sealing product; or the air tightness test structure comprises a group of air path structures, the number of the air tightness test structures is more than two, and every two air tightness test structures are used in parallel, wherein one air tightness test structure is used for testing the non-sealing product to be tested, and the other air tightness test structure is used for testing the standard non-sealing product; by the design, the outer shell and the inner rotating body can be copied and extended by the minimum unit, multiple channels can be used in parallel, and every two channels can form a pressure difference comparison air path for use. The multi-channel parallel connection has the characteristics of good test consistency, convenient operation, high working efficiency and low labor cost.

5. The testing method can realize the switching among all channels by driving the rotating body to rotate, does not need to frequently operate various control valves, and has the characteristics of good testing precision, convenient operation, high working efficiency and low labor cost. The method lays a technical foundation for the vigorous popularization and test in the industry, enables a large amount of application to be possible, can well promote the development of the industry and promote the development of the high-end equipment manufacturing industry. In the test use mode, a direct pressure test, a differential pressure test or a direct pressure comparison test can be adopted at the same time.

6. The processing method of the invention divides the main shell body into more than two sub-shells, has the characteristics of convenient processing and simple assembly, and solves the processing of the containing chamber, the gas circuit and the sealing groove in the shell and the assembly difficulty of the sealing element.

Drawings

FIG. 1 is a schematic structural diagram of a rotary tightness testing apparatus according to a first embodiment in a gas-filled or gas-exhausted state;

FIG. 2 is a schematic structural diagram of a rotary tightness testing apparatus according to the first embodiment in a pressure maintaining or air tightness testing state;

FIG. 3 is a schematic structural diagram of a rotating body according to a first embodiment;

FIG. 4 is a schematic structural diagram of a rotary tightness testing apparatus with a rotating shaft and a driving mechanism according to a first embodiment;

FIG. 5 is a schematic structural diagram of a rotary tightness testing apparatus with an air supply device according to a first embodiment;

FIG. 6 is a schematic structural diagram of a rotary tightness testing apparatus with a constant volume pressure generator according to a first embodiment;

fig. 7 is a schematic structural diagram of a rotary sealing test apparatus using a split main housing according to a first embodiment;

fig. 8a is a schematic structural diagram of a rotary tightness testing apparatus for a multi-station direct pressure test according to a first testing method according to a first embodiment;

fig. 8b is a schematic structural diagram of a rotary tightness testing apparatus for a multi-station direct pressure test according to the first testing method ii;

fig. 8c is a schematic structural diagram of a rotary tightness testing apparatus for a multi-station direct pressure test according to the first testing method three in the first embodiment;

FIG. 9 is a schematic structural diagram of a rotary tightness testing apparatus using a multi-station differential pressure test according to a first embodiment;

fig. 10 is a schematic structural view of a rotary sealing performance testing apparatus using a sealing sleeve and a second sealing ring according to a second embodiment;

FIG. 11 is a schematic structural view of a rotary sealability testing apparatus of embodiment three under inflation or deflation conditions;

FIG. 12 is a schematic structural view of a rotary tightness testing apparatus according to a third embodiment in a pressure holding or gas tightness testing state;

FIG. 13 is a schematic structural view of a rotary sealability testing apparatus of embodiment three under a degassing condition;

fig. 14 is a schematic structural view of a rotary sealability testing apparatus employing a sealing sleeve according to a fourth embodiment.

In the figure: 10. a main housing; 11. a housing chamber; 12. an intake/exhaust passage; 13. a test channel; 14. an exhaust passage; 20. A rotating body; 21. a gas path channel; 211. a first connection port; 212. a second connection port; 31. a seal ring; 32. sealing sleeves; 41. a rotating shaft; 42. a drive mechanism; 51. a pressure sensor; 52. a differential pressure sensor; 61. an air supply device; 62. a constant volume pressure generating device; 100. a standard non-hermetic seal; 200. a non-sealed product to be tested; 300. and sealing the connector.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict. Except as specifically noted, the materials and equipment used in this example are commercially available. Examples of embodiments are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. In the description of the present application, "a plurality" means two or more unless specifically stated otherwise.

In the description of the present application, it should be noted that unless otherwise specifically stated or limited, the terms "connected," "communicating," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a connection through an intervening medium, a connection between two elements, or an interaction between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The terms "first," "second," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The first embodiment is as follows:

referring to fig. 1 to 9, a rotary type sealability testing apparatus includes at least one airtightness testing structure including a main housing 10, a rotating body 20;

an accommodating chamber 11 is arranged in the main shell 10, and an air inlet/exhaust channel 12 and a test channel 13 which are respectively communicated with the accommodating chamber 11 are arranged on the main shell 10;

the rotating body 20 is disposed in the accommodating chamber 11, and the rotating body 20 and the main casing 10 can rotate relatively; an air channel 21 is arranged in the rotating body 20, and both ends of the air channel 21 are provided with a first connecting port 211 and a second connecting port 212 which are respectively communicated with the accommodating chamber;

the device also comprises a sealing structure;

the first condition is as follows: the first connecting port of the air path channel is in butt-joint communication with the air inlet/outlet channel, the joint between the first connecting port and the air inlet/outlet channel is sealed by a sealing structure, the second connecting port of the air path channel is in butt-joint communication with the testing channel, and the joint between the first connecting port and the testing channel is sealed by a sealing structure, so that the air inlet/outlet channel, the air path channel and the testing channel are sequentially communicated to form a sealed air charging/sucking channel;

In this embodiment, the rotary sealing test equipment further includes a sealing connector 300, the sealing connector has a first sealing interface and a second sealing interface, the first sealing interface is in sealing connection with an opening of the test channel on a side far away from the containing chamber, and the second sealing interface is used for being in sealing connection with an air inlet of a product to be tested; when one port of the test channel is closed, the other port of the test channel is communicated with a product to be tested through the sealing connector to form an air tightness test channel. The apparatus was used to perform a gas-tightness test on the non-sealed article.

In the preferred embodiment of the present invention, the sealing structure includes sealing rings 31 respectively disposed at the openings of the inlet/outlet passage and the testing passage adjacent to one side of the receiving chamber. Specifically, the sealing ring may be a rubber sealing ring, a hydrogenated nitrile rubber sealing ring or a silicone rubber sealing ring.

Referring to fig. 4, in a preferred embodiment of the present invention, the rotating body further includes a rotating shaft 41 extending outward from the center of the rotating body along the axial direction; the main shell is also provided with a driving mechanism 42, an output shaft of the driving mechanism is fixedly connected with the rotating shaft, the rotating shaft is driven by the driving mechanism to rotate, and then the rotating body is driven by the rotating shaft to rotate clockwise or anticlockwise. Preferably, the drive mechanism is a servo motor. By the design, the automatic control of the rotating body 20 can be realized, the accuracy of the rotating angle is ensured, and the labor intensity is reduced.

Referring to fig. 5, in the preferred embodiment of the present invention, the present invention further includes an air source device 51 connected to the air inlet/outlet channel; the air source device is a vacuum pumping device or an air charging/sucking pressurizing device. Alternatively, referring to fig. 6, the air supply device 51 is replaced with a constant volume pressure generating device 52. The principle of the constant volume pressure generating device is as follows: the piston moves forwards to enable the space of the test loop to be reduced, the compressed air enables the pressure to rise so as to meet the requirement of testing the product, the function of air filling/sucking is achieved, the piston moves backwards to enable the space of the test loop to be increased, the air pressure is reduced, and the function of exhausting is achieved.

Referring to fig. 7, in a preferred embodiment of the present invention, the main housing is a split structure, and includes more than two sub-housings, and the sub-housings are fixedly connected with each other in a detachable manner. Specifically, the shell body can be divided into two halves, four quarters and the like.

In a preferred embodiment of the invention, the receiving chamber is circular in shape, and the rotating body is circular in shape.

In a preferred implementation of the invention, the test device further comprises a pressure sensor for detecting the air pressure in the air tightness test channel. The pressure sensor is a direct pressure sensor.

In a preferred implementation of the invention, the air tightness test structure comprises more than two groups of air path structures, and each air path structure consists of an air inlet/exhaust channel, an air path channel and a test channel; the air tightness test structure meets any one of the following test modes:

referring to fig. 8a, the first test method: each two air tightness test structures are used in parallel, wherein one air tightness test structure is used for testing a to-be-tested non-sealed product 200, the other air tightness test structure is used for testing a standard non-sealed product 100, and the air path structures of the two air tightness test structures are both provided with a pressure sensor 61 for detecting air pressure in an air tightness test channel to form a pressure difference comparison air path;

referring to fig. 8b, the second test method: one air tightness test structure is used for testing a standard non-sealing product, and the rest air tightness test structures are respectively used for testing the non-sealing product to be tested; each air tightness testing structure is provided with a pressure sensor for detecting air pressure in the air tightness testing channel;

referring to fig. 8c, the test method three: all the air tightness test structures are respectively used for testing the non-sealed product to be tested; and a pressure sensor for detecting air pressure in the air tightness testing channel is arranged in the air path structure of each air tightness testing structure.

Referring to fig. 9, in a preferred embodiment of the present invention, a differential pressure sensor 62 is further disposed between each two sets of pressure sensors of the air path structure, and the differential pressure sensor detects a pressure difference between the two air tightness testing channels.

In a preferred implementation of the invention, two channels with an included angle of F and a depth equal to the radius of the internal rotating shaft body are radially processed on the same radial plane of the rotating body, and the two channels are communicated on the axis to form an air channel.

In a preferred embodiment of the present invention, the testing method of the rotary sealing test apparatus includes any one of the following testing methods:

the test method comprises the following steps:

a testing method of rotary type tightness testing equipment comprises the following steps:

1) testing a single non-sealing product:

And a second testing method comprises the following steps:

1) and (3) a double-non-sealing product comparison test step:

The third test method comprises the following steps:

1) testing a constant-volume inflatable single non-sealing product:

The test method four comprises the following steps:

A processing method of rotary type tightness testing equipment comprises the following steps:

a main shell processing step: providing a main shell base body, and processing an accommodating chamber on the main shell base body; then cutting the main shell body at a position corresponding to the accommodating chamber, and dividing the main shell body into more than two sub-shells; processing an air inlet/exhaust channel and a test channel on the sub-shell, and respectively processing an annular sealing groove at the openings of the air inlet/exhaust channel and the test channel, which are close to one side of the accommodating chamber;

Example two:

referring to fig. 10, the present embodiment is characterized in that: the sealing structure comprises a sealing sleeve 32 sleeved on the periphery of the rotating body, a first through hole and a second through hole are formed in the side wall of the sealing sleeve 32, the first through hole is communicated with a first connecting port of the air channel, and the second through hole is communicated with a second connecting port of the air channel. In particular, the gland may be a rubber gland, a hydrogenated nitrile rubber gland or a silicone rubber gland.

The other structure is the same as the first embodiment.

a main shell processing step: providing a main shell base body, and processing an accommodating chamber on the main shell base body; then cutting the main shell body at a position corresponding to the accommodating chamber, and dividing the main shell body into more than two sub-shells; processing an air inlet/exhaust channel and a test channel on the sub-shell;

Example three:

referring to fig. 11-13, the present embodiment is characterized in that:

the main shell 10 is also provided with an exhaust passage 14 communicated with the accommodating chamber; during the process that the rotating body rotates along the anticlockwise or clockwise direction relative to the shell, the air tightness test structure simultaneously meets the following conditions:

and (3) carrying out a third condition: the first connecting port of the air channel is in butt-joint communication with the testing channel, the joint between the first connecting port and the testing channel is sealed through a sealing structure, the second connecting port of the air channel is in butt-joint communication with the exhaust channel, and the joint between the second connecting port and the exhaust channel is sealed through a sealing structure, so that the testing channel, the air channel and the exhaust channel are sequentially communicated to form a sealed testing exhaust channel.

In a preferred embodiment of the present invention, the sealing structure comprises sealing rings respectively disposed at openings of the air inlet/outlet passage, the testing passage, and the air outlet passage adjacent to one side of the receiving chamber;

in a preferred implementation of the invention, the air tightness test structure comprises more than two groups of air path structures, and each air path structure consists of an air inlet/exhaust channel, a test channel, an exhaust channel and an air path channel; the air tightness test structure meets any one of the following test modes:

In a preferred implementation of the invention, two channels with an included angle of F and a depth equal to the radius of the inner rotating shaft body are processed on the same radial plane of the rotating body along the radial direction, and the two channels are communicated on the axis to form the gas path channel; the air inlet/exhaust channel, the test channel, the exhaust channel and the air passage channel are positioned on the same vertical plane; an included angle a is formed between the air inlet/outlet channel and the test channel, and an included angle b is formed between the test channel and the air outlet channel. The shape of the air passage is L-shaped, the air passage comprises a first passage and a second passage, the joint of the first passage and the second passage is located at the center of the rotating body, an included angle c is formed between the first passage 211 and the second passage 212 of the air passage, and a is equal to b and F is equal to 90 degrees. Due to the design, the butt joint of the air channel 21 with the air inlet/outlet channel 12, the testing channel 13 and the air outlet channel 14 in the switching process is more accurate, the overall layout of the device is more reasonable and compact, and the 90-degree design also enables the air flow to be smoother.

The other structure is the same as the first embodiment.

The device is used for carrying out air tightness test and air exhaust on the non-sealed product.

the test method comprises the following steps:

1) testing a single non-sealing product:

And a second testing method comprises the following steps:

1) and (3) a double-non-sealing product comparison test step:

a main shell processing step: providing a main shell base body, and processing an accommodating chamber on the main shell base body; then cutting the main shell body at a position corresponding to the accommodating chamber, and dividing the main shell body into more than two sub-shells; processing an air inlet/outlet channel, a test channel and an air outlet channel on the sub-shell, and respectively processing an annular sealing groove at the opening of the air inlet/outlet channel, the opening of the test channel and the opening of the air outlet channel, which are close to one side of the accommodating chamber;

Example four:

referring to fig. 14, the present embodiment is characterized in that: the sealing structure comprises a sealing sleeve sleeved on the periphery of the rotating body, a first through hole and a second through hole are formed in the side wall of the sealing sleeve, the first through hole is communicated with a first connecting port of the air channel, and the second through hole is communicated with a second connecting port of the air channel. In particular, the gland may be a rubber gland, a hydrogenated nitrile rubber gland or a silicone rubber gland.

The other structures are the same as those of the embodiment.

a main shell processing step: providing a main shell base body, and processing an accommodating chamber on the main shell base body; then cutting the main shell body at a position corresponding to the accommodating chamber, and dividing the main shell body into more than two sub-shells; processing an air inlet/exhaust channel, a test channel and an exhaust channel on the sub-shell;

Other examples are as follows:

the shape of the air passage channel is circular arc or U-shaped or other shapes. The air inlet/outlet channel and the test channel form an included angle a, the test channel and the air outlet channel form an included angle b,0 degrees < a <120 degrees, and a is equal to b and equal to F. Preferably, 10 ° < a <110 °, more preferably, 30 ° < a <100 °. By the design, the air flow can be more smooth in the switching process of the air path channel; meanwhile, as a is b is c, the butt joint of the air channel and the air inlet/exhaust channel, the test channel and the exhaust channel in the switching process can be more accurate. The air tightness test structure comprises four groups, six groups, eight groups or more groups of air path structures, and every two groups of air path structures are used in parallel. The number of the air tightness test structures is four, six, eight or more, and every two air tightness test structures are used in parallel. The tightness testing equipment is not limited to work in a rotating mode, and can realize the switching of the air path state through the axial sliding of the shaft and the shell, thereby realizing the equivalent testing function.

While only certain features and embodiments of the application have been illustrated and described, many modifications and changes may occur to those skilled in the art (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the scope and spirit of the invention in the claims.

Finally, it should be noted that: the above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention should not be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims

1. A rotary type tightness test device is characterized by comprising at least one air tightness test structure, wherein the air tightness test structure comprises a main shell and a rotating body;

the device also comprises a sealing structure;

2. The rotary seal testing apparatus according to claim 1, wherein the sealing structure comprises sealing rings respectively disposed at openings of the inlet/outlet passage and the testing passage adjacent to one side of the receiving chamber;

3. The rotary seal testing apparatus according to claim 1, wherein the main housing further has an exhaust passage communicating with the accommodating chamber; during the process that the rotating body rotates along the anticlockwise or clockwise direction relative to the shell, the air tightness test structure simultaneously meets the following conditions:

4. The rotary seal testing apparatus according to claim 3, wherein the sealing structure comprises sealing rings respectively disposed at openings of the inlet/outlet passage, the testing passage, and the outlet passage adjacent to one side of the receiving chamber;

5. The rotary sealing test equipment according to claim 1, further comprising a sealing connector, wherein the sealing connector has a first sealing interface and a second sealing interface, the first sealing interface is in sealing connection with an opening of the test channel on a side away from the accommodating chamber, and the second sealing interface is used for being in sealing connection with an air inlet of a product to be tested; when one port of the test channel is closed, the other port of the test channel is communicated with a product to be tested through the sealing connector to form the air tightness test channel.

6. The rotary seal testing apparatus according to any one of claims 1 to 5, wherein the rotary body further comprises a rotary shaft extending axially outward from a center of the rotary body; still be equipped with actuating mechanism on the main casing body, actuating mechanism's output shaft with pivot fixed connection is rotatory by actuating mechanism drive pivot, drives the rotator by the pivot again along clockwise or anticlockwise rotation.

7. The rotary seal testing apparatus according to any one of claims 1 to 5, further comprising a pressure sensor for detecting a gas pressure in the gas-tight test channel.

8. The rotary seal testing apparatus according to claim 1, wherein the gas tightness testing structure comprises more than two sets of gas path structures, the gas path structures are composed of gas inlet/outlet channels, gas path channels, and testing channels; the air tightness test structure meets any one of the following test modes:

9. The rotary tightness testing device according to claim 3, wherein the airtightness testing structure comprises more than two sets of gas path structures, and the gas path structures are composed of gas inlet/outlet channels, testing channels, gas outlet channels, and gas path channels; the air tightness test structure meets any one of the following test modes:

10. The rotary seal tightness testing device according to any one of claims 8 to 9, wherein a differential pressure sensor is further disposed between each two sets of pressure sensors of the air path structure.

11. The rotary seal test apparatus according to claim 1, further comprising a gas source device connected to the gas inlet/outlet passage; the air source device is a vacuum pumping device or an air charging/sucking pressurizing device.

12. The rotary seal test apparatus according to claim 1, further comprising a constant volume pressure generating device connected to the air inlet/outlet passage.

13. The rotary seal testing apparatus according to claim 1, wherein the main casing is a split structure, and comprises more than two sub-casings, and the sub-casings are fixedly connected with each other in a detachable manner.

14. The rotary seal testing apparatus according to claim 1, wherein the receiving chamber is circular in shape, and the rotating body is circular in shape corresponding thereto.

15. The rotary type tightness test device according to claim 3, wherein two channels having an included angle F and a depth equal to the radius of the inner rotary shaft body are radially processed on the same radial plane of the rotary body, and the two channels penetrate through the shaft center to form the air passage channel.

16. The rotary seal testing apparatus according to claim 15, wherein the air inlet/outlet passage, the test passage, the exhaust passage, and the air passage are located on a same vertical plane; the air inlet/outlet channel and the test channel form an included angle a, the test channel and the air outlet channel form an included angle b, wherein 0 degrees < a <120 degrees, and a is b.

17. The rotary type tightness testing device according to claim 16, wherein the air passage channel is L-shaped, the air passage channel includes a first channel and a second channel, a connection point of the first channel and the second channel is located at a center position of the rotating body, an included angle c is formed between the first channel and the second channel of the air passage channel, and a-b-F-90 °.

18. A method of testing the rotary seal testing apparatus of claim 1, comprising the steps of:

1) testing a single non-sealing product:

19. The method of testing a rotary seal testing apparatus of claim 18, comprising the steps of:

20. A method of testing the rotary seal testing apparatus of claim 1, comprising the steps of:

1) and (3) a double-non-sealing product comparison test step:

21. The method of claim 20, further comprising, after the step of testing the air-tightness, the step of testing the rotary-type tightness testing apparatus:

22. The method of claim 21, wherein the pressure difference between the two air-tightness testing channels is detected by a pressure difference sensor.

23. A method of testing the rotary seal testing apparatus of claim 1, comprising the steps of:

1) testing a constant-volume inflatable single non-sealing product:

24. The method of testing a rotary seal tightness testing device according to claim 23,

25. A method of testing the rotary seal testing apparatus of claim 1, comprising the steps of:

26. The method of claim 25, wherein the pressure difference between the two air-tightness testing channels is detected by a pressure difference sensor.

27. A method of manufacturing the rotary seal testing apparatus of claim 1, comprising the steps of:

28. A method of manufacturing a rotary seal testing apparatus according to claim 3, comprising the steps of:

29. A method of manufacturing the rotary seal testing apparatus of claim 1, comprising the steps of:

30. A method of manufacturing a rotary seal testing apparatus according to claim 3, comprising the steps of: