CN218121249U

CN218121249U - Pressure display and control meter

Info

Publication number: CN218121249U
Application number: CN202222312158.5U
Authority: CN
Inventors: 李贝贝; 曾凡勇; 谭朕; 赵洋
Original assignee: Chongqing Brighty Instrument Co ltd
Current assignee: Chongqing Brighty Instrument Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2022-12-23
Anticipated expiration: 2032-08-31

Abstract

The utility model discloses a pressure shows accuse table, including the drain pan and install first bourdon tube and second bourdon tube in the coplanar, the second bourdon tube is located the inboard of first bourdon tube, install micro-gap switch's static contact on the drain pan, install micro-gap switch's moving contact on the second bourdon tube, the second bourdon tube drives moving contact and static contact or disconnection. The beneficial effects of the utility model are that, through installing first bourdon tube and second bourdon tube in the coplanar with one heart, replace and install two bourdon tubes side by side, make the watchcase thickness of installing two bourdon tubes fall to the two fifths of former thickness, can satisfy and use in narrow and small installation environment to can reduction in production cost.

Description

Pressure display and control meter

Technical Field

The utility model belongs to the technique of instrument, especially a pressure shows accuse table.

Background

The pressure display and control meter is a novel automatic control meter which can simultaneously indicate and control pressure by means of the displacement of the elastic element when being pressed, and the precision is greatly improved by adopting the dual elastic elements to respectively indicate and control the pressure, and meanwhile, the pressure display and control meter has the advantages of high control precision, good stability and excellent shock resistance. The contact has the advantages of large capacity, convenient use and installation, field adjustment and the like.

Two Bourdon tubes of current product are setting around watchcase thickness direction is, lead to watchcase thickness size big, and is exquisite inadequately, and occupation space is big during field installation, leads to unable under constrictive installation environment.

Disclosure of Invention

The utility model aims at providing a pressure shows accuse table can satisfy and use in narrow and small installation environment.

In order to achieve the purpose, the utility model adopts the following technical scheme.

A pressure display and control meter comprises a bottom shell, a first Bourdon tube and a second Bourdon tube, wherein the first Bourdon tube and the second Bourdon tube are installed in the same plane, the second Bourdon tube is located on the inner side of the first Bourdon tube, a static contact of a micro switch is installed on the bottom shell, a moving contact of the micro switch is installed on the second Bourdon tube, and the second Bourdon tube drives the moving contact to be in contact with or disconnected from the static contact.

By adopting the technical scheme, the first Bourdon tube and the second Bourdon tube are concentrically arranged in the same plane, and the two Bourdon tubes are replaced to be arranged side by side, so that the thickness of the watchcase for installing the two Bourdon tubes is reduced to two fifths of the original thickness, the use in a narrow installation environment can be met, and the whole production cost can be reduced; a microswitch is also arranged in the watchcase, the second Bourdon tube deforms under the action of medium pressure, and when the pressure reaches a set control value, the microswitch is pushed to generate instant switching action, so that a circuit in a control system is switched on or off, and the aim of automatic control or signal sending is fulfilled.

Preferably, the moving contact includes a first moving contact and a second moving contact, the fixed contact includes a first fixed contact and a second fixed contact, the first moving contact is close to the free end of the second bourdon tube, and the first fixed contact and the first moving contact correspond to form a first microswitch.

The first moving contact is arranged at the free end close to the second Bourdon tube, when the second Bourdon tube is under the lower limit value of pressure, the free end deforms, so that the first moving contact moves, the second Bourdon tube deforms under the lower limit value of pressure, the first microswitch is connected or disconnected, and the control purpose is achieved.

Preferably, the second moving contact is located at one end close to the second bourdon tube mounting part, and the second fixed contact and the second moving contact form a second microswitch correspondingly.

Therefore, the second fixed contact corresponds to the second movable contact, the second Bourdon tube continuously pressurized deforms at the upper limit value of the pressure, so that the second microswitch is connected or disconnected, the connection or disconnection of the microswitch is realized in the set control pressure range, and the control purpose is achieved.

Preferably, the free end of the first bourdon tube is connected with the movement, and the fixing part of the movement is connected with the joint.

The free end of the first Bourdon tube is connected with the movement, so that the elastic force generated by deformation of the Bourdon tube due to pressure can be conveniently transmitted to the movement.

Preferably, the end of the joint far away from the core is provided with a thread, the axis of the joint is provided with a mounting hole, a radial hole is formed on the side wall of the other end close to the core, the radial hole is communicated with the mounting hole, and the mounting parts of the first Bourdon tube and the second Bourdon tube are hermetically connected with the radial hole.

The pressure display and control meter is installed on the tested equipment by forming threads on the joint, an installation hole is formed in the axis of the joint, the other end of the installation hole is communicated with the radial hole, an installation part formed by the first Bourdon tube and the second Bourdon tube is conveniently installed through the radial hole, a tested pressure medium conveniently enters the two Bourdon tubes through the installation hole, and the Bourdon tubes are deformed.

Preferably, one end of the mounting hole, which is far away from the radial hole, is provided with a damping screw.

The impact of the severe environmental vibration and the pulse of the medium on the instrument is reduced by arranging the damping screw, so that the indication of the shock-proof pressure gauge is stable and clear.

Preferably, the movement comprises a mandrel, and a free end of the mandrel is connected with a pointer.

Through connecting the pointer on the dabber, the core of being convenient for drives the dabber and rotates under the effect that first bourdon tube warp, makes the pointer synchronous rotation of installing on the dabber, shows corresponding pressure value.

Preferably, the end of the joint, which is far away from the end where the thread is formed, is fixedly connected with a dial plate, and the mandrel can rotatably penetrate through the dial plate and is concentric with the dial plate.

The pressure value of the measuring medium is displayed by the matching of the setting dial and the pointer.

Preferably, the static contact comprises an adjusting screw, a spring and a shell, the shell is integrally cylindrical and is connected with the bottom shell, a through hole is formed in the center of the shell, a thread matched with the adjusting screw is formed in the through hole, the spring is wound around the far end of the adjusting screw, and the adjusting screw is screwed up and down to adjust the distance between the adjusting screw and the moving contact.

By screwing the adjusting screw, the distance between the static contact and the moving contact is changed, and the upper limit value and the lower limit value of the control pressure are adjusted, so that the field use requirement is met.

The utility model has the advantages that the first bourdon tube and the second bourdon tube are concentrically arranged in the same plane, instead of arranging the two bourdon tubes side by side, the thickness of the watchcase for arranging the two bourdon tubes is reduced to two fifths of the original thickness, the utility model can be used in a narrow installation environment, and the production cost can be reduced; and a microswitch is also arranged in the watch case, the second Bourdon tube deforms under the action of medium pressure, and when the pressure reaches the upper limit value or the lower limit value of the set control value interval, the microswitch is pushed to generate instant switching action, so that a circuit in the control system can be switched on or off, and the aim of automatic control or signal sending is fulfilled. By screwing the adjusting screw, the distance between the static contact and the moving contact is changed, and the upper limit value and the lower limit value of the control pressure are adjusted, so that the field use requirement is met.

Drawings

Fig. 1 is a right side view of the present invention;

fig. 2 is a rear view of the present invention with the bottom shell removed;

fig. 3 is a partial structure diagram of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings, which are not intended to limit the scope of the embodiments described herein.

The utility model discloses a description reference numeral includes: the device comprises a first Bourdon tube 1, a second Bourdon tube 2, a first fixed contact 3, a second fixed contact 31, a first movable contact 4, a second movable contact 41, a bottom shell 5, a movement 6, a connector 7, a mounting hole 71, a damping screw 8, a pointer 9 and a dial 10.

Referring to fig. 1 and 2, a pressure display and control meter includes a bottom case 5, and a first bourdon tube 1 and a second bourdon tube 2 installed in the same plane, where the second bourdon tube 2 is located inside the first bourdon tube 1, a fixed contact of a micro switch is installed on the bottom case 5, a moving contact of the micro switch is installed on the second bourdon tube 2, and the second bourdon tube 2 drives the moving contact to be in contact with or disconnected from the fixed contact.

The moving contacts comprise a first moving contact 4 and a second moving contact 41, the fixed contacts comprise a first fixed contact 3 and a second fixed contact 31, the first moving contact 4 is close to the free end of the second bourdon tube 2, and the first fixed contact 3 and the first moving contact 4 correspond to form a first microswitch.

Referring to fig. 1, the second movable contact 41 is located at an end close to the mounting portion of the second bourdon tube 2, and the second fixed contact 31 and the second movable contact 41 correspond to form a second microswitch.

Referring to fig. 1, the free end of the first bourdon tube 1 is connected to the movement 6, and the fixed part of the movement 6 is connected to the joint 7.

Referring to fig. 1, a thread is formed at one end of the joint 7, which is far from the end connected with the movement 6, a mounting hole 71 is formed at the axis of the joint 7, a radial hole is formed at the side wall of the other end, which is near to the end connected with the movement 6, the radial hole is communicated with the mounting hole 71, and the mounting parts of the first bourdon tube 1 and the second bourdon tube 2 are hermetically connected with the radial hole.

Referring to fig. 1, a damping screw 8 is mounted at one end of the mounting hole 71 far away from the radial hole.

With reference to fig. 2, the movement 6 comprises a spindle, the free end of which is connected to a pointer 9.

Referring to fig. 2, a dial 10 is fixedly connected to the end of the joint 7 remote from the end formed with the thread, and the spindle is rotatably inserted through the dial 10 and concentric with the dial 10. The static contact comprises an adjusting screw, a spring and a shell, the shell is integrally cylindrical and is connected with the bottom shell, a through hole is formed in the center of the shell, threads matched with the adjusting screw are formed in the through hole, the spring is wound around the far end of the adjusting screw, and the adjusting screw is screwed up and down to adjust the distance between the adjusting screw and the moving contact.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The pressure display and control meter is characterized by comprising a bottom shell (5), a first Bourdon tube (1) and a second Bourdon tube (2) which are arranged in the same plane, wherein the second Bourdon tube (2) is located on the inner side of the first Bourdon tube (1), a static contact of a microswitch is arranged on the bottom shell (5), a moving contact of the microswitch is arranged on the second Bourdon tube (2), and the moving contact is driven by the second Bourdon tube (2) to be in contact with or disconnected from the static contact.

2. The pressure display and control meter according to claim 1, wherein the movable contacts comprise a first movable contact (4) and a second movable contact (41), the fixed contacts comprise a first fixed contact (3) and a second fixed contact (31), the first movable contact (4) is close to the free end of the second bourdon tube (2), and the first fixed contact (3) and the first movable contact (4) form a first microswitch correspondingly.

3. The pressure display and control meter according to claim 2, wherein the second movable contact (41) is located at one end close to the second bourdon tube (2) mounting portion, and the second stationary contact (31) and the second movable contact (41) form a second microswitch correspondingly.

4. The pressure display and control meter according to claim 1, characterized in that the free end of the first bourdon tube (1) is connected to the movement (6), and the fixed part of the movement (6) is connected to the joint (7).

5. The pressure display and control meter according to claim 4, characterized in that a thread is formed at one end of the joint (7) far away from the end connected with the movement (6), a mounting hole (71) is formed at the axis of the joint (7), a radial hole is formed at the side wall of the other end close to the end connected with the movement (6), the radial hole is communicated with the mounting hole (71), and the mounting parts of the first Bourdon tube (1) and the second Bourdon tube (2) are hermetically connected with the radial hole.

6. The pressure display and control meter according to claim 5, characterized in that a damping screw (8) is mounted at one end of the mounting hole (71) far away from the radial hole.

7. A pressure display and control watch according to claim 4, characterised in that the movement (6) comprises a spindle, the free end of which is connected with a pointer (9).

8. Pressure display and control watch according to claim 7, characterised in that a dial (10) is fixedly connected to said joint (7) at the end remote from the thread formed, said arbour being rotatable through said dial (10) and concentric to said dial (10).

9. The pressure display and control meter according to claim 8, wherein the fixed contact includes an adjusting screw, a spring and a housing, the housing is generally cylindrical and connected to the bottom case, a through hole is formed in the center of the housing, a thread engaged with the adjusting screw is formed on the through hole, the spring is wound around the distal end of the adjusting screw, and the adjusting screw is screwed up and down to adjust the distance between the adjusting screw and the movable contact.