CN212059283U - Pipeline pressure test tool - Google Patents
Pipeline pressure test tool Download PDFInfo
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- CN212059283U CN212059283U CN202021115841.4U CN202021115841U CN212059283U CN 212059283 U CN212059283 U CN 212059283U CN 202021115841 U CN202021115841 U CN 202021115841U CN 212059283 U CN212059283 U CN 212059283U
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Abstract
The utility model discloses a pipeline pressure test tool, which comprises an air inlet, wherein the air inlet is communicated with more than one pressure test device, the pressure test device is provided with an air outlet and comprises a gas transmission pipeline communicated between the air inlet and the air outlet, the gas transmission pipeline is sequentially provided with a pressure reducing device and a pressure control device along the direction of air flow, the gas transmission pipeline is also provided with a vent valve body for pressure reduction adjustment, the air inlet and the air outlet are respectively provided with a cutting sleeve joint, and the cutting sleeve joint is detachably provided with a remote conveying part, the utility model solves the defects in a high-purity nitrogen pressure test device, can realize multi-level simultaneous pressure test and pressure regulation, can carry out micro-adjustment on the internal pressure, can control the pressure increasing speed, has good observation effect, has accurate data, can also remotely observe pressure data, and can change a pressure gauge by equipment in the working process, is very convenient, simple in structure and convenient in use.
Description
Technical Field
The utility model relates to a pipeline pressure testing frock.
Background
The device is used for high-purity nitrogen pressure test inspection tools.
Among the current pipeline pressure detection device, can not realize multistage pressure testing pressure regulating simultaneously, can not carry out the micro-adjustment to internal pressure to and can not control the speed that steps up, and observe the effect not good, and change the manometer in-process and need stop all processes and just can go on, it is very troublesome, and can not audio-visually observe the pressure parameter in the pipeline.
Therefore, the existing pipeline pressure test tool is further improved.
Disclosure of Invention
The utility model aims at providing a pipeline pressure testing frock.
In order to achieve the above purpose, the utility model adopts the following scheme:
the utility model provides a pipeline pressure testing frock, including the air inlet, the intercommunication has more than one pressure testing device on the air inlet, the last gas outlet that is provided with of pressure testing device, pressure testing device are including the gas transmission pipeline of intercommunication between air inlet and gas outlet, last pressure relief device and the accuse pressure device of having set gradually along the air current direction of gas transmission pipeline, still be provided with the unloading valve body on the gas transmission pipeline and be used for the step-down to adjust, respectively be provided with cutting ferrule joint on air inlet and the gas outlet, last demountable installation of cutting ferrule joint has the long-range transport part.
Further, the pressure reducing device is a pressure reducing valve, and the pressure reducing valve is arranged on the gas transmission pipeline and communicated with the gas transmission pipeline.
Furthermore, the pressure control device is a needle valve, and the needle valve is arranged on the gas transmission pipeline and communicated with the gas transmission pipeline.
Further, the gas transmission pipeline is provided with a pressure observation device and a valve body arranged at the input end of the pressure observation device, the pressure observation device is a pressure gauge, the gas transmission pipeline is communicated with a three-way pipe sleeve, one connector of the three-way pipe sleeve is connected with an inspection pipeline, the inspection pipeline is provided with two outlet ends, and the two outlet ends are respectively connected with the pressure gauge.
Furthermore, the measuring range of the pressure gauge is 1.5-3 times of the test pressure, the precision of the pressure gauge is 0.4-level precision pressure gauge, and the diameter of the dial plate is not less than 150 mm.
Further, the valve body is a ball valve, and the ball valve is arranged on the inspection pipeline and communicated with the inspection pipeline.
Further, the remote transmission component is a pressure transmitter.
Further, still including the support body, air inlet, gas outlet and pressure testing device are fixed to be set up on the support body, the support body bottom is provided with the universal wheel.
Further, three pressure testing devices are arranged from top to bottom.
To sum up, the utility model discloses for its beneficial effect of prior art is:
the utility model provides an exist not enough among the high-purity nitrogen gas pressure detection device, can realize multistage simultaneous pressure testing pressure regulating, can carry out the micro-adjustment to internal pressure, can be to the speed that the accuse rose, and observe effectually, data are accurate, can also long-range observation pressure data, and the equipment in the course of the work can carry out the change of manometer, and is very convenient, and simple structure, convenient to use.
Drawings
Fig. 1 is a perspective view of the present invention;
FIG. 2 is a front view of the present invention;
fig. 3 is a partial enlarged view of the position a of the present invention.
The reference numbers illustrate: 1. an air inlet; 2. an air outlet; 3. a pressure testing device; 4. a pressure reducing device; 5. a pressure control device; 6. a pressure observation device; 7. a valve body; 10. a frame body; 301. a gas pipeline; 601. a three-way pipe sleeve; 602. inspecting the pipeline 603, the outlet end; 11. a universal wheel.
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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution:
a pipeline pressure test tool comprises an air inlet 1 and an air outlet 2, wherein more than one pressure test device 3 is communicated with the air inlet 1, the pressure testing device 3 is communicated with an air outlet 2, the pressure testing device 3 comprises an air transmission pipeline 301 communicated between the air inlet 1 and the air outlet 2, the gas transmission pipeline 301 is sequentially provided with a pressure reducing device 4, a pressure control device 5, a pressure observation device 6 and a valve body 7 arranged at the input end of the pressure observation device 6 in the gas flow direction, the gas transmission pipeline 301 is also provided with an emptying needle valve for pressure reduction adjustment, the gas inlet 1 and the gas outlet 2 are respectively provided with a cutting sleeve joint, the clamp sleeve joint is detachably provided with a remote conveying part inlet and outlet clamp sleeve joint, so that the quick assembly and disassembly are realized, and a remote transmission part is convenient to install and is a pressure transmitter, the air pressure can be regulated and controlled, and the remote observation is realized.
The working principle is as follows: testing the pressure of the pipeline by helium mass spectrometryThe leakage detection level reaches 1X10-8pa m3And the ball valve at the front end of the pressure gauge is used for replacing the pressure gauge on line, and the oil-forbidden precision pressure gauge can realize 0.01MAP pressure observation.
Meanwhile, a needle valve for emptying is arranged, so that the pressure reduction adjustment in the pressure testing process is realized.
The gauge range of the pressure gauge is 1.5-3 times of the test pressure, the precision of the pressure gauge is 0.4-level precision pressure gauge, and the diameter of the dial plate is larger than 150 mm.
Respectively be provided with cutting ferrule on air inlet 1 and the gas outlet 2 and connect, cutting ferrule connects last demountable installation to have long-range transport unit spare.
The utility model discloses still including support body 10, air inlet 1, gas outlet 2 and pressure testing device 3 are fixed to be set up on support body 10, support body 10 bottom is provided with universal wheel 11, sets up the convenient removal of universal wheel 11, and support body 10 is that stainless steel frame is pleasing to the eye to prevent pollution, is fit for clean requirement environment
Pressure testing device 3 is provided with threely from top to bottom, realizes multistage pressure testing pressure regulating simultaneously.
The working steps are as follows:
the pressure test adopts a pneumatic test, the test medium is dry high-purity nitrogen, and the purity of the nitrogen is not lower than 99%. The air pressure test uses two pressure gauges with the same measuring range, the measuring range of the pressure gauge is 1.5-3 times of the test pressure, the precision of the pressure gauge is a 0.4-level oil-forbidden precision pressure gauge, the diameter of a dial plate is not less than 150mm, and the dial plate is within the verification validity period;
and carrying out sectional pressure test on the pipeline according to different pipeline design pressures. The test pressure is shown in a pipeline parameter table;
a pressure test process is compiled by referring to GB/T20801 and 2006 pressure pipeline Standard Industrial pipeline.
Filling nitrogen into the pipeline system, maintaining the pressure for not less than 15 minutes when a pressure gauge displays 10% of the test pressure, detecting each welding joint by using soapy water during the period, if no leakage exists, continuously boosting the pressure, and if no abnormity exists in the pressure maintaining detection when the pressure reaches 50% of the test pressure, gradually boosting the pressure according to 10% of the test pressure until the test pressure is maintained for not less than 15 minutes; and then reducing the pressure to the design pressure, maintaining the pressure for at least 1 hour, using a foaming agent to inspect each welding joint and each sealing surface, if the environmental temperature is unchanged during the detection period, the pressure is kept unchanged by a pressure gauge, and the pressure is judged to be qualified if no leakage, no abnormal sound and no visible deformation are detected. After the pressure test is finished, the nitrogen in the system is slowly discharged until the pressure is reduced to normal pressure.
And filling a pressure test record after the pressure test is qualified. If the test is unqualified, the leakage position needs to be found out, the pressure in the pipeline is relieved to the normal pressure, then the pipeline is repaired, the nondestructive test is carried out after the repair is qualified, and the pressure resistance test is carried out again after the helium leakage detection is finished.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described above, and it should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the description in the above embodiments and the description is only illustrative of the principles of the present invention, and the present invention can be modified in various ways without departing from the spirit and scope of the present invention, and these modifications and changes fall into the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. The utility model provides a pipeline pressure testing frock, including air inlet (1), its characterized in that: the pressure testing device is characterized in that more than one pressure testing device (3) is communicated on the air inlet (1), the air outlet (2) is arranged on the pressure testing device (3), the pressure testing device (3) comprises an air transmission pipeline (301) communicated between the air inlet (1) and the air outlet (2), a pressure reducing device (4) and a pressure control device (5) are sequentially arranged on the air transmission pipeline (301) along the air flow direction, an air release valve body is further arranged on the air transmission pipeline (301) and used for pressure reduction regulation, and clamping sleeve connectors are respectively arranged on the air inlet (1) and the air outlet (2), and long-distance conveying parts are installed on the clamping sleeve connectors.
2. The pipeline pressure testing tool according to claim 1, characterized in that the pressure reducing device (4) is a pressure reducing valve, and the pressure reducing valve is arranged on the gas transmission pipeline (301) and communicated with the gas transmission pipeline (301).
3. The pipeline pressure test tool according to claim 1, wherein the pressure control device (5) is a needle valve, and the needle valve is arranged on the gas transmission pipeline (301) and communicated with the gas transmission pipeline (301).
4. The pipeline pressure test tool according to claim 2, characterized in that a pressure observation device (6) and a valve body (7) arranged at an input end of the pressure observation device (6) are arranged on the gas transmission pipeline (301), the pressure observation device (6) is a pressure gauge, a three-way pipe sleeve (601) is arranged on the gas transmission pipeline (301) in a communicated manner, one interface of the three-way pipe sleeve (601) is connected with a test pipeline (602), the test pipeline (602) is provided with two outlet ends (603), and the two outlet ends (603) are respectively connected with the pressure gauge.
5. The pipeline pressure test tool of claim 4, wherein the measuring range of the pressure gauge is 1.5-3 times of the test pressure, the precision of the pressure gauge is 0.4-level precision pressure gauge, and the diameter of the dial plate is not less than 150 mm.
6. The pipeline pressure testing tool according to claim 1, characterized in that the valve body (7) is a ball valve, and the ball valve is arranged on the inspection pipeline (602) and communicated with the inspection pipeline (602).
7. The pipeline pressure testing tool of claim 1, wherein the remote delivery component is a pressure transmitter.
8. The pipeline pressure testing tool according to any one of claims 1 to 7, further comprising a frame body (10), wherein the air inlet (1), the air outlet (2) and the pressure testing device (3) are fixedly arranged on the frame body (10), and universal wheels (11) are arranged at the bottom of the frame body (10).
9. The pipeline pressure testing tool according to claim 8, wherein three pressure testing devices (3) are arranged from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021115841.4U CN212059283U (en) | 2020-06-16 | 2020-06-16 | Pipeline pressure test tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021115841.4U CN212059283U (en) | 2020-06-16 | 2020-06-16 | Pipeline pressure test tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212059283U true CN212059283U (en) | 2020-12-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021115841.4U Active CN212059283U (en) | 2020-06-16 | 2020-06-16 | Pipeline pressure test tool |
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| Country | Link |
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| CN (1) | CN212059283U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114544375A (en) * | 2022-03-07 | 2022-05-27 | 美思流体动力科技(哈尔滨)有限公司 | O-shaped ring hydrostatic test device for nuclear main pump |
-
2020
- 2020-06-16 CN CN202021115841.4U patent/CN212059283U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114544375A (en) * | 2022-03-07 | 2022-05-27 | 美思流体动力科技(哈尔滨)有限公司 | O-shaped ring hydrostatic test device for nuclear main pump |
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