CN217845499U - Quick replacement device for metering and detecting pressure sensor - Google Patents
Quick replacement device for metering and detecting pressure sensor Download PDFInfo
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- CN217845499U CN217845499U CN202221596220.1U CN202221596220U CN217845499U CN 217845499 U CN217845499 U CN 217845499U CN 202221596220 U CN202221596220 U CN 202221596220U CN 217845499 U CN217845499 U CN 217845499U
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- 238000007789 sealing Methods 0.000 claims abstract description 58
- 238000001514 detection method Methods 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 239000012945 sealing adhesive Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 7
- 238000001125 extrusion Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000004804 winding Methods 0.000 abstract description 4
- 239000000565 sealant Substances 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 239000003566 sealing material Substances 0.000 abstract description 2
- 230000008859 change Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a quick replacement device of pressure sensor measurement realizes dynamic seal, satisfies at high temperature 150 ℃, low temperature-60 ℃ test environment to and sealed effect is stable, the reliability under high low temperature-40 ℃ -130 ℃ alternation test environment. Repeated disassembly and assembly and rapid replacement are realized, and as the method of winding the sealing adhesive tape and coating the sealing adhesive is abandoned in the technology, the sealing gasket is adopted for shape and position extrusion sealing, so that reliable sealing performance after repeated disassembly and assembly can be further met. In the replacement process, auxiliary sealing materials such as sealing adhesive tapes or sealant do not need to be wound or smeared, corresponding wrenches, torque monitoring tools and the like do not need to be used, and therefore the operation method is simplified.
Description
Technical Field
The utility model relates to a sensor check out test set technical field, concretely relates to pressure sensor measures and detects quick replacement device.
Background
The existing pressure sensor metering and detecting device sealing assembly structure is usually formed by winding a sealing adhesive tape on a pipe thread, smearing a sealing adhesive, and installing a sealing ring or a sealing gasket for sealing.
However, the sealing surface (or the sealing opening) is not suitable for repeated disassembly and replacement, the temperature environment tolerance is poor, and the workpiece expands with heat and contracts with cold under the influence of the change of the environmental temperature, so that the damage or degradation of the sealing joint surface causes pressure leakage.
The sealing performance under high and low temperature environments and high and low temperature alternating test environmental conditions is poor and uncontrollable. The quick and repeated disassembly and replacement can not be realized, the operability and the reliability are poor, the efficiency is low, and the quick and repeated disassembly and replacement is not suitable for the batch operation of running water. The assembly of the seal structure requires many details, such as: the method of winding the sealing tape, the position or dosage of the sealant, the torque force when fastening the thread, and the corresponding wrench and tool needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problem of the above background art and providing a quick replacement device for pressure sensor measurement and detection.
The purpose of the utility model can be realized by the following technical scheme:
a pressure sensor metering detection rapid replacement device comprises a pressure cylinder and a piston, wherein a groove is formed in the inner wall of the pressure cylinder, a first sealing element is placed in the groove, the piston is placed in the pressure cylinder, a one-way valve is further installed in the piston, the top of the pressure cylinder is in threaded connection with a pressure cylinder cover, and a first through hole is formed in the pressure cylinder cover;
the first sealing element is a lip-shaped sealing ring.
As a further aspect of the present invention: and threads are formed on the inner wall of the first through hole.
As a further aspect of the present invention: the joint has the joint spare on the first through-hole, the joint spare is formed with the installing port through first through-hole and pressure cylinder cap block on the joint spare.
As a further aspect of the present invention: the shape of the clamping piece is triangular sector, and the shape of the first through hole is three arc-shaped key notches.
As a further aspect of the present invention: an annular groove is formed in the outer wall of the piston, and a second sealing element is embedded in the annular groove.
As a further aspect of the present invention: and a second through hole is formed in the axis of the piston, the piston is inserted into the second through hole, and a third sealing element is sleeved at the position, located at the second through hole, of the end part of the piston.
The utility model has the advantages that:
repeated disassembly and assembly and rapid replacement are realized, and as the method of winding the sealing adhesive tape and coating the sealing adhesive is abandoned in the technology, the sealing gasket is adopted for shape and position extrusion sealing, so that reliable sealing performance after repeated disassembly and assembly can be further met. In the replacement process, auxiliary sealing materials such as sealing adhesive tapes or sealant do not need to be wound or smeared, corresponding wrenches, torque monitoring tools and the like do not need to be used, and therefore the operation method is simplified.
Drawings
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 isbase:Sub>A cross-sectional view taken at A-A of FIG. 1;
FIG. 3 is a schematic view of the disassembled structure of the present invention;
FIG. 4 isbase:Sub>A cross-sectional view taken at A-A of FIG. 3;
fig. 5 is a schematic cross-sectional view of the first sealing member and the pressure cylinder according to the present invention;
FIG. 6 is a schematic cross-sectional view of the check valve of the present invention;
fig. 7 is a schematic structural view of the middle pressure cylinder cover of the present invention;
FIG. 8 is a schematic plan view of a snap-in member of the present invention;
fig. 9 is a schematic three-dimensional structure diagram of the clamping member of the present invention.
In the figure: 1. a pressure cylinder; 12. a groove; 11. a first seal member; 13. a pressure input port; 2. a piston; 21. a one-way valve; 22. a second seal member; 23. a third seal member; 3. a pressure cylinder cover; 4. a clamping piece; 5. a pressure sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
Referring to fig. 1-9, the present invention provides a rapid displacement device for measuring and detecting pressure sensors, which includes a pressure cylinder 1 and a piston 2;
wherein, the smooth roughness of the inner wall of the pressure cylinder 1 is superior to Ra3.2 (6 grades);
wherein, the bottom end of the pressure cylinder 1 is provided with a pressure input port 13 which is connected with the input of a pressure source;
wherein, the outer wall of the top opening of the pressure cylinder 1 is provided with an external thread which is connected with the pressure cylinder cover 3.
Wherein, the piston 2 is arranged in the pressure cylinder 1;
a groove 12 is formed in the inner wall of the pressure cylinder 1, a first sealing element 11 is placed in the groove 12, the piston 2 is placed in the pressure cylinder 1, a one-way valve 21 is further installed in the piston 2, the top of the pressure cylinder 1 is connected with a pressure cylinder cover 3 in a threaded mode, and a first through hole is formed in the pressure cylinder cover 3;
wherein, the pressure cylinder cover 3 is provided with an internal thread which is tightly screwed and assembled with an external thread at the top end of the pressure cylinder 1.
The first seal 11 is a lip seal.
Wherein, the lip-shaped sealing ring is also called as a reciprocating sealing ring and is embedded in a groove 12 in the pressure cylinder 1, and the pressure surface of the sealing ring is lip-shaped, so that the lip-shaped sealing ring is fully contacted with a sealing surface to generate a sealing effect; that is, the lip radially expands under pressure (pneumatic or hydraulic) to abut the contact surface, and the greater the pressure within the designed pressure range, the tighter the lip abuts the contact surface, i.e., the better the seal; thereby being in dynamic close fitting and sealing all the time, and avoiding the influence caused by the change of environmental temperature and expansion with heat and contraction with cold.
In this case, the first sealing member 11 is made of silicon rubber in consideration of a wide operating temperature.
In this embodiment, a thread is formed on the inner wall of the first through hole, wherein the pressure sensor 5 is connected with the pressure cylinder cover 3 through the first through hole.
In this embodiment, the joint has joint spare 4 on the first through-hole, and joint spare 4 is formed with the installing port through first through-hole and 3 blocks of pressure cylinder cap on the joint spare 4, is formed with the screw in the installing port, and pressure sensor 5 passes through installing port and 4 threaded connection of joint spare, and joint spare 4 then through rotatory and 3 blocks of pressure cylinder cap after the embedding.
In this embodiment, an annular groove is formed on the outer wall of the piston 2, and a second sealing element 22 is embedded in the annular groove;
wherein, the annular groove is formed at the front (non-pressure surface) end of the outer wall, and the second sealing element 22 is an O-shaped sealing ring;
a second through hole is formed at the axis of the piston 2, the piston 2 is inserted into the second through hole, and a third sealing element 23 is sleeved at the end part of the piston 2 at the second through hole;
the piston rod structure principle is designed in the embodiment, and the smoothness and the roughness of the outer wall are superior to those of Ra3.2 (6 levels);
the O-shaped sealing ring and the lip-shaped sealing ring are combined to enable the piston 2 to be coaxial in the pressure cylinder 1;
wherein, the O-shaped sealing ring also has the functions of blocking dirt and dust and assisting sealing;
wherein, the second through hole plays a role in outputting air pressure (hydraulic pressure);
wherein, the second through hole is internally provided with a one-way valve 21, and the one-way valve 21 comprises a spring, a core rod, an O-shaped sealing ring and a clamping ring;
the check valve 21 plays a role of stopping/opening air pressure (hydraulic pressure), the check valve 21 core rod extrudes the O-shaped sealing ring to realize sealing under the thrust of a spring and internal air pressure (hydraulic pressure) in a normal state, and when the core rod is pushed inwards by the pressure sensor 5 to be detected, the air pressure (hydraulic pressure) in the pressure cylinder 1 is discharged from the check valve 21 and conveyed to the pressure sensor 5.
The center of the front end face (non-pressure-bearing face) of the piston 2, namely the exposed part of the core rod of the check valve 21, is provided with a second through hole which is a counter bore, the counter bore is coaxial with the check valve 21, a third sealing element 23 is arranged in the counter bore, a sealing washer is arranged at the position of the third sealing element 23, and the sealing washer can play a role in sealing with the pressure input port 13 of the pressure sensor 5 to be measured.
And (3) installation operation during metering detection:
firstly, the pressure sensor 5 to be measured and the clamping piece 4 are mutually screwed together through threads, and the threads are screwed and positioned by bare hands easily; then the clamping piece 4 and the pressure cylinder cover 3 are coaxially butted, and are aligned with the notches of the clamping piece 4 and the pressure cylinder cover 3; after embedding, rotating to buckle the falling position; disassembly is the reverse process operation. Thereby realizing the quick disassembly and assembly replacement.
When air pressure (hydraulic pressure) is fed into a pressure input port 13 of the quick replacement device, the piston 2 generates thrust + F (positive F) in the direction upwards towards the pressure cylinder cover 3 under the action of the pressure intensity P of the air pressure (hydraulic pressure); the magnitude of the thrust force + F is proportional to the effective bearing surface S of the piston 2 and the feed air pressure (hydraulic) pressure P, i.e.: + F = P · S.
Meanwhile, the air pressure (hydraulic pressure) flows through the one-way valve 21 and is transmitted to the measured pressure sensor 5, the air pressure (hydraulic pressure) pressure P generates a reverse thrust-F (negative F) which is opposite to the thrust of the piston 2 downwards on the effective acting surface S1 of the measured pressure sensor 5, and the effective acting surface S1 of the measured pressure sensor 5 is equal to the inner hole sectional area when the third sealing element 23 is dynamically pressed; the magnitude of the reverse thrust-F is proportional to the effective active surface S1 of the pressure sensor 5 to be measured and the feed air pressure (hydraulic) pressure P, i.e., -F = P · S1.
The effective stress surface S of the piston 2 is required to be larger than the effective action surface S1 of the pressure sensor 5 to be measured, so that the thrust + F is larger than the reverse thrust-F by 3 times, and the larger the multiplying power is, the larger the thrust + F is, and the more favorable the extrusion sealing effect is.
Because the direction of the reverse thrust-F generated by the effective acting surface of the pressure sensor 5 to be measured is opposite to the direction of the thrust + F generated by the effective force bearing surface of the piston, the extrusion force F is obtained after the thrust + F removes the component force of the reverse thrust-F.
The extrusion force F acts on the third sealing element 23 to achieve extrusion sealing, dynamic sealing is achieved, and the problems that a sealing port overflows due to expansion with heat and contraction with cold caused by temperature environment change, the sealing effect is poor and the like are solved.
While one embodiment of the present invention has been described in detail, the present invention is only a preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. The equivalent changes and improvements made according to the application scope of the present invention should be still included in the patent coverage of the present invention.
Claims (5)
1. The rapid displacement device for metering and detecting the pressure sensor comprises a pressure cylinder (1) and a piston (2), and is characterized in that a groove (12) is formed in the inner wall of the pressure cylinder (1), a first sealing element (11) is placed in the groove (12), the piston (2) is placed in the pressure cylinder (1), a one-way valve (21) is further installed in the piston (2), a pressure cylinder cover (3) is connected to the top of the pressure cylinder (1) in a threaded manner, and a first through hole is formed in the pressure cylinder cover (3);
the first sealing element (11) is a lip-shaped sealing ring.
2. The quick replacement device for metering and detecting pressure sensors according to claim 1, wherein threads are formed on the inner wall of the first through hole.
3. The pressure sensor metering detection rapid replacement device according to claim 1, wherein a clamping member (4) is clamped on the first through hole, the clamping member (4) is clamped with the pressure cylinder cover (3) through the first through hole, and a mounting opening is formed in the clamping member (4).
4. The pressure sensor metering detection quick replacement device according to any one of claims 1 to 3, characterized in that an annular groove is formed on the outer wall of the piston (2), and a second sealing element (22) is embedded in the annular groove.
5. The quick replacement device for metering and detecting of the pressure sensor according to claim 4, characterized in that a second through hole is formed at the axis of the piston (2), the piston (2) is inserted into the second through hole, and a third sealing element (23) is sleeved at the end part of the piston (2) at the second through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221596220.1U CN217845499U (en) | 2022-06-23 | 2022-06-23 | Quick replacement device for metering and detecting pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221596220.1U CN217845499U (en) | 2022-06-23 | 2022-06-23 | Quick replacement device for metering and detecting pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217845499U true CN217845499U (en) | 2022-11-18 |
Family
ID=84026157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221596220.1U Active CN217845499U (en) | 2022-06-23 | 2022-06-23 | Quick replacement device for metering and detecting pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217845499U (en) |
-
2022
- 2022-06-23 CN CN202221596220.1U patent/CN217845499U/en active Active
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