CN112213096A - Pressure testing method suitable for various types of pressure release valves - Google Patents
Pressure testing method suitable for various types of pressure release valves Download PDFInfo
- Publication number
- CN112213096A CN112213096A CN202011043272.1A CN202011043272A CN112213096A CN 112213096 A CN112213096 A CN 112213096A CN 202011043272 A CN202011043272 A CN 202011043272A CN 112213096 A CN112213096 A CN 112213096A
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- pressure
- pressure relief
- testing
- relief valves
- valve
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- 238000012360 testing method Methods 0.000 title claims abstract description 19
- 238000010998 test method Methods 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 7
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 238000007689 inspection Methods 0.000 abstract description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
Abstract
The invention belongs to the technical field of transformer calibration, and particularly relates to a pressure testing method suitable for various types of pressure release valves, which comprises the following steps: (1) taking down the safety cap of the pressure release valve; (2) inflating a system connected to the pressure relief valve; (3) deflating after the inflation is finished; (4) and checking and recording the pressure value of the system, and judging whether the pressure relief valve is qualified. The pressure test method is simple and convenient to operate, working steps of pressure release valve inspection are advanced, reworking and replacement problems caused by the pressure release valve problem in the production process can be avoided, the production process is smoother, and the calibration efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of transformer calibration, and particularly relates to a pressure testing method suitable for various types of pressure release valves.
Background
Due to the development of society and the continuous promotion of electric power construction, the reliability and safety requirements of current power grid companies on power grid systems are higher and higher. With the emphasis of power supply enterprises on the development of power distribution networks, higher requirements are put forward on the operation quality of oil-immersed distribution transformer products. The pressure release valve is an important protection device for the operation of the transformer, when the inside of the transformer breaks down, the transformer oil is decomposed to generate a large amount of oil gas, the pressure in the oil tank is rapidly increased due to the fact that the fully-sealed transformer is completely isolated from the outside, the oil tank can be seriously burst, and the misoperation or the refusal operation of the pressure release valve can have great influence on the safe and reliable operation of the transformer.
Disclosure of Invention
The pressure testing method is simple and convenient to operate, the working steps of pressure relief valve inspection are advanced, the problems of rework and replacement of the production process caused by the problems of the pressure relief valves can be solved, and the production process is smoother.
A pressure testing method suitable for various types of pressure release valves comprises the following steps:
(1) taking down the safety cap of the pressure release valve;
(2) inflating a system connected to the pressure relief valve;
(3) deflating after the inflation is finished;
(4) and checking and recording the pressure value of the system, and judging whether the pressure relief valve is qualified.
Further, in the step (2), the inflation pressure is up to 50 KPa.
Further, in the step (3), the pressure is released to normal pressure during air release.
Further, the pressure testing method uses a pressure testing device suitable for various types of pressure release valves, the device comprises a box body, the box body is connected with a pressurizing inflation pipe, an air inlet valve is arranged on the pressurizing inflation pipe, a box cover is welded on the box body, an opening is formed in the box cover, a flange is welded on the opening, a threaded hole is formed in the flange, the pressure release valve, a pressure gauge, a pressure recorder and an air outlet valve are respectively connected with the flange through the threaded hole, and the pressure recorder is connected with the pressure release valve and the pressure gauge through a pipeline.
Further, the threaded hole which is not required to be used is sealed by a plug.
Further, the pressure gauge is a pressure gauge with a feedback signal.
Furthermore, the box body is formed by bending a steel plate twice to form three surfaces and then enclosing and blocking the other two surfaces to form a square structural frame; and reinforcing ribs are welded on the inner wall of the box body. The strength of the box body is ensured.
Furthermore, a box edge is welded on the box body, and the box edge is an angle steel.
Further, the box cover is a steel plate with the thickness of 5 mm.
Furthermore, bottom feet are welded at the bottom of the box body.
The invention has the beneficial effects that:
according to the pressure test method suitable for the pressure release valves of various models, the pressure is applied according to the highest opening pressure value required by the pressure release valves of different models, signal feedback is carried out through the pressure gauge, and whether the installed pressure release valve is qualified or not is verified through reading of the pressure recorder, so that the problem of verifying the pressure release valve by using a transformer body is solved; the operation is simple and convenient, the working steps of the pressure release valve inspection are advanced, the problems of rework and replacement in the production process caused by the problems of the pressure release valve can be avoided, the production process is smoother, and the checking efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic structural view of a pressure testing device suitable for various types of pressure relief valves in example 1.
In the figure, 1-box, 2-inflating air tube, 3-air inlet valve, 4-flange, 5-pressure gauge, 6-pressure recorder, 7-air outlet valve, 8-foot, 9-YSF9 pressure release valve, 10-YSF8 pressure release valve and 11-YSF6 pressure release valve.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1, the pressure testing device suitable for various types of pressure release valves used in the embodiment of the invention comprises a box body 1, the box body 1 is connected with a pressurizing inflation tube 2, the pressurizing inflation tube 2 is provided with an air inlet valve 3, the box body 1 is welded with a box cover, the box cover is provided with an opening, the opening is welded with a flange 4, the flange 4 is provided with a threaded hole, the pressure release valve, a pressure gauge 5, a pressure recorder 6 and an air outlet valve 7 are respectively connected with the flange 4 through the threaded hole, the pressure recorder 6 is connected with the pressure release valve and the pressure gauge 5 through a pipeline, the threaded hole which is not required to be used is sealed through a plug, a box edge is welded on the box body 1.
The box body 1 is formed by bending a steel plate twice to form three surfaces and then enclosing and blocking the other two surfaces to form a square structural frame; reinforcing ribs are welded on the inner wall of the box body 1; the box cover is a steel plate with the thickness of 5 mm; the box edge is an angle steel; the pressure gauge 5 is a pressure gauge with a feedback signal; the pressure relief valves include YSF9 pressure relief valve 9, YSF8 pressure relief valve 10, YSF6 pressure relief valve 11.
The pressure testing method suitable for the pressure release valves of various types comprises the following steps:
(1) taking down the safety caps of the YSF9 pressure relief valve 9, the YSF8 pressure relief valve 10 and the YSF6 pressure relief valve 11;
(2) opening an air inlet valve 3 and an air outlet valve 7, and inflating the box body 1 by pressing an inflation pipe 2, wherein the inflation pressure is 50KPa at most;
(3) after the inflation is finished, the air is discharged, and the pressure is released to normal pressure;
(4) and checking and recording the numerical values displayed by the pressure recorders 6, and judging whether the pressure relief valve is qualified.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A pressure test method suitable for various types of pressure release valves is characterized by comprising the following steps:
(1) taking down the safety cap of the pressure release valve;
(2) inflating a system connected to the pressure relief valve;
(3) deflating after the inflation is finished;
(4) and checking and recording the pressure value of the system, and judging whether the pressure relief valve is qualified.
2. The method for testing the pressure of various types of pressure relief valves as claimed in claim 1, wherein in step (2), the inflation pressure is up to 50 KPa.
3. The method for testing the pressure of the pressure relief valves of various types according to claim 1, wherein in the step (3), the pressure is released to normal pressure when the air is released.
4. The pressure test method suitable for the pressure relief valves of various models as claimed in claim 1, wherein the pressure test method uses a pressure test device suitable for the pressure relief valves of various models, the device comprises a box body, the box body is connected with a pressurizing inflation tube, the pressurizing inflation tube is provided with an air inlet valve, a box cover is welded on the box body, the box cover is provided with an opening, a flange is welded on the opening, the flange is provided with a threaded hole, the pressure relief valve, the pressure gauge, the pressure recorder and the air outlet valve are respectively connected with the flange through the threaded hole, and the pressure recorder is connected with the pressure relief valve and the pressure gauge through a pipeline.
5. The method of testing pressure for a plurality of types of pressure relief valves of claim 4, wherein the threaded bore not required is sealed by a plug.
6. The method for testing the pressure of the pressure relief valves of claim 4, wherein the pressure gauge is a pressure gauge with a feedback signal.
7. The method for testing the pressure of the pressure relief valves of various types according to claim 4, wherein the inner wall of the box body is welded with reinforcing ribs.
8. The method for testing the pressure of the pressure relief valves of the multiple types according to claim 4, wherein a box edge is welded on the box body, and the box edge is an angle steel.
9. The method for testing the pressure of the pressure relief valves of various types according to claim 4, wherein the cover is a steel plate with a thickness of 5 mm.
10. The method for testing the pressure of the pressure relief valves of different types according to claim 4, wherein the bottom of the box body is welded with feet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011043272.1A CN112213096A (en) | 2020-09-28 | 2020-09-28 | Pressure testing method suitable for various types of pressure release valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011043272.1A CN112213096A (en) | 2020-09-28 | 2020-09-28 | Pressure testing method suitable for various types of pressure release valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112213096A true CN112213096A (en) | 2021-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011043272.1A Pending CN112213096A (en) | 2020-09-28 | 2020-09-28 | Pressure testing method suitable for various types of pressure release valves |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060179929A1 (en) * | 2002-04-10 | 2006-08-17 | John Becker | Systems and methods for maintaining air pressure in tires |
| CN2898802Y (en) * | 2006-04-24 | 2007-05-09 | 冉正华 | Checker of pressure-releasing valve |
| CN103278312A (en) * | 2013-03-30 | 2013-09-04 | 国家电网公司 | Method and device for verifying pressure relief valve of transformer |
| CN203224329U (en) * | 2013-03-30 | 2013-10-02 | 国家电网公司 | Quick calibrator used for pressure relief valve |
| CN205230724U (en) * | 2015-09-11 | 2016-05-11 | 国网山东省电力公司博兴县供电公司 | Pressure releasing device of transformer |
| CN110630590A (en) * | 2019-10-18 | 2019-12-31 | 云南同巨实业有限公司 | Portable pressure relief valve detection platform |
| CN210141986U (en) * | 2019-06-18 | 2020-03-13 | 广西电网有限责任公司电力科学研究院 | Portable transformer pressure relief valve field calibration system |
-
2020
- 2020-09-28 CN CN202011043272.1A patent/CN112213096A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060179929A1 (en) * | 2002-04-10 | 2006-08-17 | John Becker | Systems and methods for maintaining air pressure in tires |
| CN2898802Y (en) * | 2006-04-24 | 2007-05-09 | 冉正华 | Checker of pressure-releasing valve |
| CN103278312A (en) * | 2013-03-30 | 2013-09-04 | 国家电网公司 | Method and device for verifying pressure relief valve of transformer |
| CN203224329U (en) * | 2013-03-30 | 2013-10-02 | 国家电网公司 | Quick calibrator used for pressure relief valve |
| CN205230724U (en) * | 2015-09-11 | 2016-05-11 | 国网山东省电力公司博兴县供电公司 | Pressure releasing device of transformer |
| CN210141986U (en) * | 2019-06-18 | 2020-03-13 | 广西电网有限责任公司电力科学研究院 | Portable transformer pressure relief valve field calibration system |
| CN110630590A (en) * | 2019-10-18 | 2019-12-31 | 云南同巨实业有限公司 | Portable pressure relief valve detection platform |
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Application publication date: 20210112 |