CN216951848U - Pipeline test liquid pressure conversion device - Google Patents
Pipeline test liquid pressure conversion device Download PDFInfo
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- CN216951848U CN216951848U CN202122800269.6U CN202122800269U CN216951848U CN 216951848 U CN216951848 U CN 216951848U CN 202122800269 U CN202122800269 U CN 202122800269U CN 216951848 U CN216951848 U CN 216951848U
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- cylinder body
- pipeline
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- piston
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Abstract
The creation discloses a pipeline testing liquid pressure conversion device which is provided with a cylindrical cylinder body, wherein one end of the cylinder body is provided with a first pipeline communication port; the cover body is fixedly connected with the cylinder body and is provided with a second pipeline communication port and a slide way communicated with the second pipeline communication port; a piston is arranged between the cover body and the cylinder body, the piston comprises a rod part with a small end part area and a piston head with a large end part area, the end face of the rod part is contained in a slide way of the cover body, the rod part is sealed with the inner wall of the slide way of the cover body, the end face of the piston head is contained in the cylinder body, the piston head is sealed with the inner wall of the cylinder body, and the piston can move in the cylinder body and the cover body. The device has simple structure, saves cost, can change the area ratio of the piston head and the rod part according to different requirements, adjusts the output pressure of the device and has wide application range.
Description
Technical Field
The utility model relates to a pipeline test liquid pressure conversion device, which is particularly suitable for connecting pressure equipment and pipelines.
Background
At present, most rubber tube production needs pressure maintaining test and blasting test, according to the specification of SAEJ516 standard, the pressure maintaining pressure is 2 times of the working pressure of the rubber tube, and the blasting pressure is 4 times of the working pressure.
In the test of partial products, the lowest value of the pressure maintaining pressure of the existing related pressurizing equipment is still far higher than the working pressure of the rubber tube, and the initially applied pressure of the pressurizing equipment is far higher than the working pressure of the rubber tube when the pressurizing equipment applies the pressure. In addition, in the initial stage, the applied pressure of the pressurizing equipment is unstable, the rubber tube is easy to break in the initial stage, and the requirements of the verification test of the pressure holding and bursting pressure tests of the ultra-low pressure rubber tube cannot be met.
Therefore, there is a need for a device that allows the existing pressurization device to detect ultra-low pressure or ultra-high pressure hoses.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem of providing a pipeline test liquid pressure conversion device with better adaptability.
In order to solve the technical problem, the utility model provides a pipeline testing liquid pressure conversion device which is provided with a cylindrical cylinder body, wherein one end of the cylinder body is provided with a first pipeline communication port; the cover body is fixedly connected with the cylinder body and is provided with a second pipeline communication port and a slide way communicated with the second pipeline communication port; a piston is arranged between the cover body and the cylinder body, the piston comprises a rod part with a small end part area and a piston head with a large end part area, the end face of the rod part is accommodated in the slide way of the cover body, the rod part is sealed with the inner wall of the slide way of the cover body, the end face of the piston head is accommodated in the cylinder body, the piston head is sealed with the inner wall of the cylinder body, and the piston can move in the cylinder body and the cover body.
The utility model has the beneficial effects that: the device has simple structure, saves cost, can change the area ratio of the piston head and the rod part according to different requirements, adjusts the output pressure of the device and has wide application range.
Drawings
Fig. 1 is a schematic cross-sectional view of a pipeline testing fluid pressure conversion device of the present invention.
Detailed Description
The pipeline test liquid pressure conversion device of the utility model is clearly and completely explained in the following with reference to the attached figure 1.
A pipeline test liquid pressure conversion device comprises a cylindrical cylinder body 1, wherein one end of the cylinder body 1 is provided with a first pipeline communication port 11, and the first pipeline communication port 11 is connected with a pipeline to be tested through a first connector 5; the cover body 2 fixedly connected with the cylinder body 1 can be connected with the cylinder body through threads or can be connected with the cylinder body through other modes, such as a rotary buckle mode. The lid body 2 is provided with a second pipe communication port 21 and a slide passage 22 communicating with the second pipe communication port 21, and the second pipe communication port 21 is connected to the pressurizing device through the second joint 6. A stopping portion for stopping the piston 3 from sliding towards the second pipeline communicating opening 21 is arranged in the slide way 22 of the cover body 2, so that the stroke of the piston 3 in the slide way 22 is ensured.
The pipeline testing liquid pressure conversion device is also provided with a piston 3 between the cover body 2 and the cylinder body 1, and the piston 3 comprises a rod part 32 with a small end part area and a piston head 31 with a large end part area. The piston head 31 and the rod 32 are provided with at least one sealing ring 34, 35, so that the piston head 31 and the cylinder 1, and the rod 32 and the cover 2 form sealing respectively.
The cylinder body 1 and the piston head 31 surround to form a first cavity 12. The cylinder body 1 is further provided with an injection port 4 which is used for injecting liquid into the first cavity 12 and discharging gas in the first cavity 12, at a position corresponding to the first cavity 12. The injection port 4 is provided with a valve 41 that can be opened and closed.
The end face of the rod 32 is accommodated in the slide passage 22 of the lid body 2, the rod 32 is sealed with the inner wall of the slide passage 22 of the lid body 2, the end face of the piston head 31 is accommodated in the cylinder body 1, the piston head 31 is sealed with the inner wall of the cylinder body 1, and the piston 3 is movable in the cylinder body 1 and the lid body 2.
The piston head 31, the cover body 2, the cylinder body 1 and the rod part 32 surround to form a middle cavity 13, and air is filled in the middle cavity 13. The middle chamber 13 is provided with an exhaust port (not shown). The exhaust port may be formed by a non-sealing screw portion between the cylinder 1 and the lid 2, or may be formed by an exhaust hole (not shown) provided in the cylinder 1 and/or the lid 2.
Firstly, the pipeline test liquid pressure conversion device is connected with a pipeline to be tested through a first interface 5, is connected with a pressurizing device through a second interface 6, and is filled with liquid, two such as water, in the first cavity 12 through the injection port 4, the slide way 22 is filled with the same liquid as the liquid in the first cavity 12, the slide way 22 is pressurized through the pressurizing device, so that the pressure A1 in the slide way 22 is greater than the pressure B1 in the first cavity 12, the piston 3 slides towards the first cavity 12 and reaches a balanced state, at the moment, the pressure A2 in the slide way 22 is equal to the pressure B2 in the first cavity 12, and in the sliding process, the volume of the middle cavity 13 is changed, and the exhaust port can suck or exhaust gas, so that the piston 3 can move more freely between the cylinder body 1 and the cover body 2. Because the area of the piston head 31 is greater than the area of the end of the rod portion 32, the pressure P1 in the first chamber 12 is now less than the pressure P2 of the slide 22. Therefore, the device can be used for connecting the ultra-low pressure pipeline to be tested to the traditional pressurizing equipment with higher lower pressure limit, thereby saving the cost. And because the device has simple structure, the area ratio of the piston head and the rod part can be changed according to different requirements, the output pressure of the device can be adjusted, and the application range is wide.
In other embodiments, the first interface 5 may be connected to a pressurizing device, the second interface 6 may be connected to a pipe to be tested, and the position of the injection port 4 may be adjusted, so that the apparatus may be used for detecting an ultrahigh pressure pipe.
The technical solutions described above are only for illustrating the embodiments of the present invention, and are not limiting to the present invention, and equivalent changes made by those skilled in the art according to the creation of the present invention belong to the protection scope of the present invention.
Claims (10)
1. The utility model provides a pipeline test liquid pressure conversion equipment which characterized in that is provided with:
the cylinder comprises a cylindrical cylinder body, wherein one end of the cylinder body is provided with a first pipeline communication port;
the cover body is fixedly connected with the cylinder body and is provided with a second pipeline communication port and a slide way communicated with the second pipeline communication port;
a piston is arranged between the cover body and the cylinder body, the piston comprises a rod part with a small end part area and a piston head with a large end part area, the end face of the rod part is accommodated in the slide way of the cover body, the rod part is sealed with the inner wall of the slide way of the cover body, the end face of the piston head is accommodated in the cylinder body, the piston head is sealed with the inner wall of the cylinder body, and the piston can move in the cylinder body and the cover body.
2. The pipeline testing liquid pressure conversion device according to claim 1, wherein the piston head, the cover body, the cylinder body and the rod portion surround to form a middle cavity, and air is contained in the middle cavity.
3. The pipeline test liquid pressure switching device of claim 2, wherein the middle chamber is provided with an exhaust port.
4. The pipeline test liquid pressure conversion device of claim 3, wherein the exhaust port is formed by a non-sealing threaded portion between the cylinder block and the cover.
5. The pipeline test liquid pressure conversion apparatus according to claim 3, wherein the exhaust port is formed by an exhaust hole provided on the cylinder body and/or the cover body.
6. The pipeline test fluid pressure conversion device of claim 1 wherein the piston head and the rod portion are provided with at least one sealing ring.
7. The pipeline testing liquid pressure switching apparatus according to claim 1, wherein a stopper portion for stopping the piston from sliding toward the second pipeline communication port is provided in the slide way of the cover body.
8. The pipeline test fluid pressure conversion device of claim 1, wherein the cylinder block and piston head enclose a first cavity.
9. The device for converting pipe test liquid pressure according to claim 8, wherein an injection port for injecting liquid into the first cavity and discharging gas from the first cavity is further provided at a position of the cylinder corresponding to the first cavity.
10. The pipeline test liquid pressure switching apparatus according to claim 9, wherein the injection port is provided with a valve which can be opened and closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122800269.6U CN216951848U (en) | 2021-11-17 | 2021-11-17 | Pipeline test liquid pressure conversion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122800269.6U CN216951848U (en) | 2021-11-17 | 2021-11-17 | Pipeline test liquid pressure conversion device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216951848U true CN216951848U (en) | 2022-07-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122800269.6U Active CN216951848U (en) | 2021-11-17 | 2021-11-17 | Pipeline test liquid pressure conversion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216951848U (en) |
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2021
- 2021-11-17 CN CN202122800269.6U patent/CN216951848U/en active Active
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