CN108692892A - A kind of device for detecting airtightness of corrugated tube and detection method - Google Patents
A kind of device for detecting airtightness of corrugated tube and detection method Download PDFInfo
- Publication number
- CN108692892A CN108692892A CN201810691704.6A CN201810691704A CN108692892A CN 108692892 A CN108692892 A CN 108692892A CN 201810691704 A CN201810691704 A CN 201810691704A CN 108692892 A CN108692892 A CN 108692892A
- Authority
- CN
- China
- Prior art keywords
- bellows
- detected
- bellowss
- detection
- tube body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a kind of device for detecting airtightness of corrugated tube, it is related to bellows air tightness detection equipment technical field, including two bellows fixed stations and two booster bodies, two bellows fixed stations are respectively used to fix two bellowss to be detected, the output end of two booster bodies is separately connected one end of two bellowss to be detected, and the other end of two bellowss to be detected is connected as one by detection pipe.The present invention can be suitable for the bellows of various length, versatility is stronger, and place can be saved, additionally by first two bellowss to be detected are connected as one, then identical gas is passed through toward both ends, its both ends is set to keep identical air pressure, then the air pressure change at both ends is observed, on the other hand detection method one side more simple, intuitive can detect two bellowss simultaneously, detection efficiency is improved, there is good practicability.
Description
Technical field
The present invention relates to bellows air tightness detection equipment technical field, specifically a kind of bellows air-leakage test
Device and detection method.
Background technology
Corrugated stainless steel tubing is installed on as a kind of flexible pressure-resistant pipe fitting in liquid conveying system, to compensate pipeline or machine
The effects that mutual displacement of device, equipment connecting pin absorbs vibrational energy, can play vibration damping, noise reduction has flexible, quality
The multinomial feature such as gently, corrosion-resistant, antifatigue, high-low temperature resistant.But the use of existing bellows will generally form both ends and be welded with method
Blue modular construction, gas or liquid medium of the ripple tube cavity filled with certain pressure when use, such as combustion gas inflammable gas, because
This, it is necessary to assure its leakproofness, it is ensured that its security performance.
The existing bellows method of inspection is generally detected by hydraulic pressure, and detection means is close for that will detect bellows both ends to be measured
Envelope, is positioned in water after pressurization, according to there is bubble-free, to judge whether tube body leaks;
The detection means major defect mainly has the following
1) bubble-free needs artificial judgement, so there is the case where erroneous judgement, misjudgement;
2) water itself has stainless steel certain corrosiveness, influences product quality;
3) when detecting, product sealing needs manual operation, and needs double cooperation, is manually respectively screwed into seal plug
Both ends pipe fitting, daily 8 hours, amount of inspection about 500 or so needed to use 0.5 cubic metre of water daily, and working efficiency is low,
Improve testing cost;
4) it after product testing, needs to dry, drying acc power is 10KW, needs continuous baking 3 hours, daily power consumption daily
30KWH increases production cost, reduces production efficiency.
Through retrieval, Chinese utility model patent:CN201120509395.X discloses a kind of effective gas tightness inspection of ripple
Device, including air leakage detector are surveyed, it further includes the detection core bar being arranged in bellows to be measured and is arranged in wave to be measured
Line pipe both ends, and the detection fixture of corrugated tube end to be measured is sealed, detection fixture is equipped with the sealing for pressing closer corrugated tube end to be measured
Plugging, sealing plugging are connected by tracheae with air leakage detector.Utility model carries out air pressure detection using gas is filled with
The leakproofness of bellows, machine judgement is more reasonable, avoids causing leaker to be judged by accident because of human factor;Meanwhile avoid tube body with
Water contacts, and improves product appearance quality, has saved water consumption;Every bellows is detected as single detection, pneumostop substitution
Manual seal, greatly reduces labor intensity, and production efficiency improves 50% or more, eliminates baking operation, energy is greatly saved
Source.
But it still has more serious disadvantage, such as the material of one and bellows to be measured are needed to have when detection
Detection core bar is inserted into bellows to be measured as support, is then fixedly connected with ripple to be measured by detection core bar identical with length
The both ends of pipe, then tested.In actual use, on the one hand since bellows has multiple full-lengths and other are non-
Full-length increases hard so needing to make a series of detection core bar of different lengths to match the bellows of different length
On the other hand part cost and management cost since the length of bellows is longer, are needed the detection core bar of same length when detection
It is inserted into or takes out into bellows, this had both required larger operating space, did not also utilize the operation of single worker.
Invention content
According to the above-mentioned deficiencies of the prior art, the present invention proposes a kind of device for detecting airtightness of corrugated tube and detection side
Method is dedicated to solving one of the technical problem in aforementioned background art.
The present invention solves its technical problem using following technical scheme to realize:
A kind of device for detecting airtightness of corrugated tube, including two bellows fixed stations and two booster bodies, two waves
Line pipe fixed station is respectively used to fix two bellowss to be detected, and the output end of two booster bodies is separately connected two
The other end of one end of a bellows to be detected, two bellowss to be detected is connected as one by detection pipe;
The detection pipe includes the tube body made of transparent material, and the circle that can be moved axially along tube body is equipped in tube body
Tube cavity is divided into two independent chambers by the central axis of partition board, circular bulkheads and tube body, circular bulkheads, it is round every
The end of plate is fixed with ring-shaped rubber pad.
As the further improvement of the present invention, multiple resetting springs are additionally provided in the tube body, resetting spring is symmetrical
It is arranged on the both sides of partition board, the madial wall of tube body and is respectively equipped with the first spring connecting point on partition board and is connected with second spring
The both ends of point, resetting spring are separately fixed on the first spring connecting point and second spring tie point.
As the further improvement of the present invention, the side wall of the tube body is equipped with graduation mark.
As the further improvement of the present invention, the both ends of the tube body are equipped with jointing, and jointing is used for and waits for
The end of the bellows of detection is connected.
As the further improvement of the present invention, the bellows fixed station is including cylindrical around column, and cylinder is around column
End be equipped with ring shaped stopper, cylinder is additionally provided with protective frame and head cover on the outside of column, and the top of protective frame is equipped with opening, top
Lid lid closes the opening in protective frame, and head cover is hinged with protective frame.
As the further improvement of the present invention, the booster body includes air pump, and the output end of air pump is connected with connection
Pipe, connecting tube are equipped with check valve and relief valve, and the other end of connecting tube is equipped with jointing, jointing be used for it is to be detected
The end of bellows be connected.
A kind of detection method of device for detecting airtightness of corrugated tube, includes the following steps
S1, two bellowss to be detected are respectively wound around two cylinders on column, two bellowss to be detected
One end be detachably connected respectively by jointing and a connecting tube, the other end of two bellowss to be detected leads to respectively
Jointing is crossed to be detachably connected with detection pipe;
Two air pumps of S2 while startup are inflated into two bellowss to be detected, when relief valve starts exhaust, explanation
Preset pressure is had reached in bellows to be detected, closes air pump;
S3, the position that partition board in detection pipe is observed in preset time;
If S4, partition board are in initial position always, illustrate that the air-tightness of two bellowss is good, detection finishes;Such as
Fruit partition board deviates initial position, then illustrates that the air-tightness of the bellows of that side corresponding to partition board moving direction is unsatisfactory for wanting
It asks, replaces the bellows, then repeat above-mentioned detection process.
The beneficial effects of the invention are as follows:
The present invention is used is wrapped in the cylindrical fixed form around column by bellows to be detected, can be suitable for various length
The bellows of degree, versatility is stronger, and can save place, additionally by two bellowss to be detected are first connected as one
Then body is passed through identical gas toward both ends, its both ends is made to keep identical air pressure, then observes the air pressure change at both ends, should
Detection method one side more simple, intuitive, on the other hand can detect two bellowss, improve detection efficiency, have simultaneously
Good practicability.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is the front view of present embodiment;
Fig. 2 is the side view of present embodiment;
Fig. 3 is the fragmentary detail view of the testing tube of present embodiment.
In figure:1- bottom plates, 2- air pumps, 3- check valves, 4- connecting tubes, 5- protective frames, 6- cylinders around column, 7- detection pipes,
71- tube bodies, 72- partition boards, 73- resetting springs, 8- head covers, 9- relief valves, 10- universal wheels.
Specific implementation mode
Below by the description to embodiment, the shape of for example involved each component of specific implementation mode of the invention, structure
It makes, the mutual alignment between each section and connection relation, the effect of each section and operation principle, manufacturing process and the side of operating with
Method etc., is described in further detail, completeer to help those skilled in the art to have the inventive concept of the present invention, technical solution
Whole, accurate and deep understanding.
As shown in Figure 1 to Figure 3, present embodiment provides a kind of device for detecting airtightness of corrugated tube technical solution, including bottom
Plate 1 is set on bottom plate 1 there are two symmetrically arranged bellows fixed station, and bellows fixed station includes cylindrical around column 6, is used
In bellows to be detected is wrapped in cylinder on column 6, cylinder is equipped with ring shaped stopper around the end of column 6, for preventing
It is wrapped in the cylindrical bellows on column 6 to slip from end, cylinder is additionally provided with protective frame 5, protective frame 5 around the outside of column 6
Top be equipped with opening, the lid of head cover 8 closes the opening in protective frame 5, and head cover 8 and protective frame 5 are hinged, and protective frame 5 can prevent
Bellows falls off shocking damage human body or other equipment from interface under high pressure.
Two air pumps 2 are additionally provided on bottom plate 1, the output end of air pump 2 is connected with connecting tube 4, connecting tube 4 by check valve 3
It is equipped with relief valve 9, the other end of connecting tube 4 is equipped with jointing, and jointing is for one end with bellows to be detected
It is connected.
The device for detecting airtightness of corrugated tube further includes detection pipe 7, and detection pipe 7 includes the tube body made of transparent material
71, specifically, the making of the materials such as quartz, acrylic may be used in tube body 71.Being equipped in tube body 71 can move axially along tube body 71
Circular bulkheads 72, the central axis of circular bulkheads 72 and tube body 71,71 inner cavity of tube body is divided into two by circular bulkheads 72
Independent chamber prevents between two chambers that there are airflow, circular bulkheads 72 to increase the air-tightness of circular bulkheads 72
End be fixed with ring-shaped rubber pad.Be additionally provided with multiple resetting springs 73 in tube body 71, resetting spring 73 symmetrically setting every
The both sides of plate 72 make partition board 72 that can stablize under non-working condition in situ, divide on the madial wall of tube body 71 and on partition board 72
Not She You the first spring connecting point and second spring tie point, the both ends of resetting spring 73 are separately fixed at the first spring connecting point
It on second spring tie point, is observed in order to facilitate staff, the side wall of tube body 71 is equipped with graduation mark.The both ends of tube body 71
Equipped with jointing, jointing with the other end of bellows to be detected for being connected.
For the ease of the mobile device, 1 bottom of bottom plate is equipped with multiple universal wheels 10.
The present invention operation principle be:Two bellowss to be detected are respectively wound around two cylinders on column 6, two
One end of root bellows to be detected is detachably connected by jointing and a connecting tube 4 respectively, two waves to be detected
The other end of line pipe is detachably connected by jointing and detection pipe 7 respectively, is then started two air pumps 2 simultaneously and is waited for two
It is inflated in the bellows of detection, when relief valve 9 starts exhaust, illustrates to have reached preset pressure in bellows to be detected,
Close air pump 2, at this time since the pressure size in two bellowss to be detected is identical, then 72 both sides of partition board in detection pipe 7
Pressure is still identical, stablizes in initial position.Then the position that partition board 72 is observed in preset time, if partition board 72 is always
In initial position (allowing have relative error), then illustrate that the air-tightness of two bellowss is good, detection finishes, and replaces two newly
Bellows to be detected, then repeat above-mentioned detection process, if partition board 72 deviate initial position (departure degree be more than allow
Error), then illustrate that the air-tightness of the bellows of that side corresponding to 72 moving direction of partition board is unsatisfactory for requiring.
It should be noted that when due to detection, it is also possible to the case where there are the gas leakage simultaneously of two bellowss, but two
The identical possibility of rate of a bellows gas leakage and gas leakage simultaneously is minimum, as long as so partition board 72 is stablized in preset time
Initial position then illustrates that two bellowss are air tight, and air-tightness is good, but when partition board 72 deviates, then partition board 72 moves
The bellows of that side corresponding to direction affirms gas leakage, and whether gas leakage can not determine the bellows of the other side, so needing at this time
The bellows of gas leakage is replaced, and retains the insulating tube that can not be determined, a new bellows to be detected is replaced, then weighs
Multiple above-mentioned detection process.
The present invention is used is wrapped in the cylindrical fixed form around column 6 by bellows to be detected, can be suitable for various
The bellows of length, versatility is stronger, and can save place, additionally by two bellowss to be detected are first connected as one
Then body is passed through identical gas toward both ends, its both ends is made to keep identical air pressure, then observes the air pressure change at both ends, should
Detection method one side more simple, intuitive, on the other hand can detect two bellowss, improve detection efficiency, have simultaneously
Good practicability.
The present invention is exemplarily described above, it is clear that present invention specific implementation is not subject to the restrictions described above,
As long as using the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress, or not improved this is sent out
Bright design and technical solution directly applies to other occasions, within protection scope of the present invention.The protection of the present invention
Range should be determined by the scope of protection defined in the claims.
Claims (7)
1. a kind of device for detecting airtightness of corrugated tube, it is characterised in that:Including two bellows fixed stations and two superchargers
Structure, two bellows fixed stations are respectively used to fix two bellowss to be detected, the output end of two booster bodies
It is separately connected one end of two bellowss to be detected, the other end of two bellowss to be detected is connected by detection pipe
It is integrated;
The detection pipe includes the tube body made of transparent material, be equipped in tube body can be moved axially along tube body it is round every
Tube cavity is divided into two independent chambers, circular bulkheads by the central axis of plate, circular bulkheads and tube body, circular bulkheads
End be fixed with ring-shaped rubber pad.
2. device for detecting airtightness of corrugated tube according to claim 1, it is characterised in that:It is additionally provided in the tube body multiple
Resetting spring, resetting spring are symmetrically arranged on the both sides of partition board, the madial wall of tube body and are respectively equipped with the first bullet on partition board
Spring tie point and second spring tie point, the both ends of resetting spring are separately fixed at the first spring connecting point and are connected with second spring
Point on.
3. device for detecting airtightness of corrugated tube according to claim 1, it is characterised in that:The side wall of the tube body is equipped with
Graduation mark.
4. device for detecting airtightness of corrugated tube according to claim 1, it is characterised in that:The both ends of the tube body, which are equipped with, to be connected
Connector, jointing with the end of bellows to be detected for being connected.
5. device for detecting airtightness of corrugated tube according to claim 1, it is characterised in that:The bellows fixed station packet
Cylinder is included around column, cylindrical to be equipped with ring shaped stopper around the end of column, cylinder is additionally provided with protective frame and head cover on the outside of column,
The top of protective frame is equipped with opening, and head cover lid closes the opening in protective frame, and head cover is hinged with protective frame.
6. device for detecting airtightness of corrugated tube according to claim 1, it is characterised in that:The booster body includes gas
The output end of pump, air pump is connected with connecting tube, and connecting tube is equipped with check valve and relief valve, and the other end of connecting tube is equipped with connection
Connector, jointing with the end of bellows to be detected for being connected.
7. the detection method of the device for detecting airtightness of corrugated tube according to claim 1-6 any one, it is characterised in that:
Include the following steps
S1, two bellowss to be detected are respectively wound around two cylinders on column, the one of two bellowss to be detected
End is detachably connected by jointing and a connecting tube respectively, and the other end of two bellowss to be detected passes through company respectively
Connector is detachably connected with detection pipe;
Two air pumps of S2 while startup are inflated into two bellowss to be detected, when relief valve starts exhaust, are illustrated to be checked
Preset pressure is had reached in the bellows of survey, closes air pump;
S3, the position that partition board in detection pipe is observed in preset time;
If S4, partition board are in initial position always, illustrate that the air-tightness of two bellowss is good, detection finishes;If every
Plate deviates initial position, then illustrates that the air-tightness of the bellows of that side corresponding to partition board moving direction is unsatisfactory for requiring, more
The bellows is changed, above-mentioned detection process is then repeated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810691704.6A CN108692892A (en) | 2018-06-28 | 2018-06-28 | A kind of device for detecting airtightness of corrugated tube and detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810691704.6A CN108692892A (en) | 2018-06-28 | 2018-06-28 | A kind of device for detecting airtightness of corrugated tube and detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108692892A true CN108692892A (en) | 2018-10-23 |
Family
ID=63851200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810691704.6A Pending CN108692892A (en) | 2018-06-28 | 2018-06-28 | A kind of device for detecting airtightness of corrugated tube and detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108692892A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489731A (en) * | 2018-12-26 | 2019-03-19 | 江苏丰禾机械制造股份有限公司 | A kind of quality detecting method after bellows assembling |
| CN110595696A (en) * | 2019-10-29 | 2019-12-20 | 格力电器（武汉）有限公司 | Water pipe air tightness detection device |
| CN112881001A (en) * | 2021-01-28 | 2021-06-01 | 吴春花 | Valve production is with actual measurement device after sale |
| CN113740007A (en) * | 2021-09-28 | 2021-12-03 | 航天晨光股份有限公司 | Bellows gas tightness short-term test device is with detecting anchor clamps |
| CN118518274A (en) * | 2024-07-23 | 2024-08-20 | 常州市奥普德塑业有限公司 | General gas tightness detecting system for gas pipe |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH085490A (en) * | 1994-06-22 | 1996-01-12 | Tokyo Gas Co Ltd | Pressure difference detector |
| US6333689B1 (en) * | 1998-06-17 | 2001-12-25 | Richard Young | Apparatus and method for water flow fire alarm |
| CN101458149A (en) * | 2008-12-22 | 2009-06-17 | 奇瑞汽车股份有限公司 | Automobile fuel sealing expedite test device |
| CN203114786U (en) * | 2012-12-27 | 2013-08-07 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Leakage measuring system |
| GB2506838A (en) * | 2012-08-07 | 2014-04-16 | Atmos Wave Ltd | A method of identifying leaks in a fluid carrying conduit using a pig |
| CN103928066A (en) * | 2014-03-24 | 2014-07-16 | 国核电站运行服务技术有限公司 | Method for detecting leakage of heat-transfer pipe of condenser in nuclear power plant and differential pressure leakage detecting system |
| CN104677573A (en) * | 2014-12-15 | 2015-06-03 | 上海德尔福汽车空调系统有限公司 | Double-station gastight dry-type leakage detecting method and double-station dry-type leakage detecting equipment |
| CN105202989A (en) * | 2015-09-14 | 2015-12-30 | 江西洪都航空工业集团有限责任公司 | Measuring tool and method for structural part location degrees acted as mutual references |
| CN105452831A (en) * | 2013-06-08 | 2016-03-30 | 德尔格安全股份两合公司 | Pressure sensor, measuring device, reaction carrier and measuring method |
| CN108072499A (en) * | 2017-11-24 | 2018-05-25 | 重庆赛格尔汽车配件有限公司 | A kind of bilayer air-conditioner pipe air tightness detection system and method |
-
2018
- 2018-06-28 CN CN201810691704.6A patent/CN108692892A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH085490A (en) * | 1994-06-22 | 1996-01-12 | Tokyo Gas Co Ltd | Pressure difference detector |
| US6333689B1 (en) * | 1998-06-17 | 2001-12-25 | Richard Young | Apparatus and method for water flow fire alarm |
| CN101458149A (en) * | 2008-12-22 | 2009-06-17 | 奇瑞汽车股份有限公司 | Automobile fuel sealing expedite test device |
| GB2506838A (en) * | 2012-08-07 | 2014-04-16 | Atmos Wave Ltd | A method of identifying leaks in a fluid carrying conduit using a pig |
| CN203114786U (en) * | 2012-12-27 | 2013-08-07 | 徐工集团工程机械股份有限公司江苏徐州工程机械研究院 | Leakage measuring system |
| CN105452831A (en) * | 2013-06-08 | 2016-03-30 | 德尔格安全股份两合公司 | Pressure sensor, measuring device, reaction carrier and measuring method |
| CN103928066A (en) * | 2014-03-24 | 2014-07-16 | 国核电站运行服务技术有限公司 | Method for detecting leakage of heat-transfer pipe of condenser in nuclear power plant and differential pressure leakage detecting system |
| CN104677573A (en) * | 2014-12-15 | 2015-06-03 | 上海德尔福汽车空调系统有限公司 | Double-station gastight dry-type leakage detecting method and double-station dry-type leakage detecting equipment |
| CN105202989A (en) * | 2015-09-14 | 2015-12-30 | 江西洪都航空工业集团有限责任公司 | Measuring tool and method for structural part location degrees acted as mutual references |
| CN108072499A (en) * | 2017-11-24 | 2018-05-25 | 重庆赛格尔汽车配件有限公司 | A kind of bilayer air-conditioner pipe air tightness detection system and method |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109489731A (en) * | 2018-12-26 | 2019-03-19 | 江苏丰禾机械制造股份有限公司 | A kind of quality detecting method after bellows assembling |
| CN110595696A (en) * | 2019-10-29 | 2019-12-20 | 格力电器（武汉）有限公司 | Water pipe air tightness detection device |
| CN112881001A (en) * | 2021-01-28 | 2021-06-01 | 吴春花 | Valve production is with actual measurement device after sale |
| CN112881001B (en) * | 2021-01-28 | 2024-01-26 | 吴春花 | Valve production is with actual measurement device after sale |
| CN113740007A (en) * | 2021-09-28 | 2021-12-03 | 航天晨光股份有限公司 | Bellows gas tightness short-term test device is with detecting anchor clamps |
| CN118518274A (en) * | 2024-07-23 | 2024-08-20 | 常州市奥普德塑业有限公司 | General gas tightness detecting system for gas pipe |
| CN118518274B (en) * | 2024-07-23 | 2024-11-01 | 常州市奥普德塑业有限公司 | General gas tightness detecting system for gas pipe |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108692892A (en) | A kind of device for detecting airtightness of corrugated tube and detection method | |
| CN108458844A (en) | A kind of intelligence bellows air-tightness batch detecting device and detection method | |
| CN204694421U (en) | Valve leak detection proving installation | |
| CN106704833B (en) | A kind of fuel gas conduit blocks detection device and blocks detection method | |
| CN103940559A (en) | Leak detection device for valve | |
| CN210243114U (en) | Bellows leakproofness detection device | |
| CN106092470B (en) | Pressure reaction still leak detector | |
| CN204988873U (en) | Aircraft sylphon seal pressure test anchor clamps | |
| CN108918040B (en) | Detection apparatus for automobile engine cylinder seal | |
| CN211085581U (en) | Automobile pipeline airtightness leak detection and leakage point inspection test device | |
| CN104006930A (en) | Leak detection test bed | |
| CN207133022U (en) | A kind of sylphon seal performance test apparatus | |
| CN117030144B (en) | Grid helium leakage detection method | |
| CN110174225B (en) | Shield tunnel segment joint air tightness simulation device capable of adjusting opening angle | |
| CN208568201U (en) | A kind of water jacket of engine cylinder cover chamber air-tightness detection device | |
| CN207649857U (en) | A kind of full-automatic four stations air tightness detection machine | |
| CN217505134U (en) | Sealing test device of bellows | |
| CN209910908U (en) | Valve test device | |
| CN104776962A (en) | Valve detecting fixture and valve detecting system with same | |
| CN211740914U (en) | Pressure pipeline pressure test acceptance device for engineering supervision | |
| CN209214866U (en) | Air tightness tester suitable for ship piping system | |
| CN203893999U (en) | Leak-detection test bed | |
| CN209570307U (en) | It is a kind of for detecting the air pressure monitor station of standard position air-tightness | |
| CN221945459U (en) | Pressure sensor calibration device | |
| CN106768722A (en) | A kind of closure pressure testing device and closure pressure-measuring method suitable for mesohigh Gas Pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181023 |