CN114112188A - Transformer pressure releaser inspection device and method - Google Patents
Transformer pressure releaser inspection device and method Download PDFInfo
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- CN114112188A CN114112188A CN202111254193.XA CN202111254193A CN114112188A CN 114112188 A CN114112188 A CN 114112188A CN 202111254193 A CN202111254193 A CN 202111254193A CN 114112188 A CN114112188 A CN 114112188A
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- pressure
- tank body
- transformer
- releaser
- connecting flange
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- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000007689 inspection Methods 0.000 title claims description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 12
- 238000007789 sealing Methods 0.000 claims description 10
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 12
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L27/00—Testing or calibrating of apparatus for measuring fluid pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/62—Testing of transformers
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Housings And Mounting Of Transformers (AREA)
Abstract
The invention relates to a device and a method for testing a pressure releaser of a transformer, belonging to the technical field of transformer tests. The technical scheme is as follows: the lower part of the tank body (5) is connected with a high-pressure air source through a stop valve (3) and an air pipe joint (4), and the upper part of the tank body (5) is connected with a pressure gauge (1) through a pressure gauge elbow (2); the top of the tank body (5) is opened and is provided with a first connecting flange (6) which is connected with a pressure releaser (8), thereby forming a closed space; the bottom of the tank body (5) is a plane and is placed on the bottom surface of a transformer manufacturing site. The invention has the beneficial effects that: in the transformer manufacturing process, before the pressure releaser is installed, the fault state of the power transformer is simulated, so that the pressure releaser is inspected, the operation is convenient, the pressure releaser is used in a transformer manufacturing field, the working efficiency is improved, and the quality of a transformer product is ensured.
Description
Technical Field
The invention relates to a device and a method for testing a pressure releaser of a transformer, belonging to the technical field of transformer tests.
Background
The pressure relief device is used as a safety component of the power transformer, and when the power transformer fails to operate, the reliable action of the pressure relief device is particularly important. In large and medium-sized transformers, the pressure releaser is generally arranged on an oil tank of the transformer, and when the transformer works normally, the oil of the transformer is protected from the outside air. When the transformer is short-circuited, the transformer winding generates electric arcs and sparks, so that a large amount of gas is instantly generated by transformer oil, the pressure in the oil tank is increased greatly, when the pressure reaches a set pressure, the pressure releaser is opened and releases the pressure, and the pressure releaser is automatically closed after the pressure is released. Therefore, the transformer oil tank is prevented from being deformed and exploded due to overlarge pressure. At present, in a transformer manufacturing process, before a pressure releaser is installed, the reliable action of the pressure releaser must be checked, and the prior art has no special pressure releaser checking device, so that the reliable action of the pressure releaser is very inconvenient to check, and the quality of a transformer product is possibly influenced.
Disclosure of Invention
The invention aims to provide a device and a method for testing a pressure releaser of a transformer, which are used for simulating the fault state of a power transformer so as to test the pressure releaser, are convenient to operate, are suitable for being used in a transformer manufacturing field, improve the working efficiency, ensure the quality of transformer products and solve the technical problems in the prior art.
The technical scheme of the invention is as follows:
a transformer pressure releaser inspection device comprises a pressure gauge, a pressure gauge elbow, a stop valve, an air pipe joint, a tank body and a pressure releaser, wherein the lower part of the tank body is connected with a high-pressure air source through the stop valve and the air pipe joint, and the upper part of the tank body is connected with the pressure gauge through the pressure gauge elbow; the top of the tank body is provided with an opening and a first connecting flange which is connected with the pressure releaser, thereby forming a closed space; the bottom of the tank body is a plane and is placed on the bottom surface of a transformer manufacturing site.
And a second connecting flange on the pressure releaser is matched with a first connecting flange at the top of the tank body, and a sealing rubber gasket is arranged between the second connecting flange and the first connecting flange and is fastened through a fixing bolt.
The air pipe joint is a conical joint.
A method for checking a pressure release device of a transformer comprises the following steps:
preparing a test tool: the lower part of the tank body is connected with a high-pressure air source through a stop valve and an air pipe joint, and the upper part of the tank body is connected with a pressure gauge through a pressure gauge elbow; the top of the tank body is opened and provided with a first connecting flange; the bottom of the tank body is a plane and is placed on the bottom surface of a transformer manufacturing site;
the test was carried out: in the transformer manufacturing process, before the pressure releaser is installed, a second connecting flange on the pressure releaser is matched with a first connecting flange on the top of a tank body, and a sealing rubber gasket is arranged between the second connecting flange and the first connecting flange and is fastened through a fixing bolt, so that a closed space is formed;
the gas pipe connector is connected with a gas pipe of a gas bottle, gas is continuously injected into the tank body, the internal pressure of the tank body is improved, when the internal pressure reaches an action pressure value set by the pressure releaser, the pressure releaser acts to release the internal pressure according to the fault state of the power transformer, and therefore the inspection of the pressure releaser is achieved; if the pressure release device does not reach the set action pressure value of the pressure release device for release, or the pressure release device does not reach the set action pressure value of the pressure release device for release, the pressure release device is proved to be unusable.
The air pipe joint is conical, so that the air pipe joint is convenient to install, is tightly connected and is not prone to air leakage; the air inflow of the gas can be controlled through the stop valve so as to ensure an accurate pressure value; the pressure value is monitored by a pressure gauge.
The tank body is connected with the pressure releaser through the first connecting flange and the second connecting flange, is sealed through the sealing rubber gasket and is fastened through the fixing bolt, and the tool is conveniently fastened in place by using a fastening tool.
The invention has the beneficial effects that: in the transformer manufacturing process, before the pressure releaser is installed, the fault state of the power transformer is simulated, so that the pressure releaser is inspected, the operation is convenient, the pressure releaser is used in a transformer manufacturing field, the working efficiency is improved, and the quality of a transformer product is ensured.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
in the figure: the pressure gauge comprises a pressure gauge 1, a pressure gauge elbow 2, a stop valve 3, a gas pipe joint 4, a tank body 5, a first connecting flange 6, a fixing bolt 7, a pressure releaser 8, a second connecting flange 9 and a sealing rubber gasket 10.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the accompanying drawings.
A transformer pressure releaser inspection device comprises a pressure gauge 1, a pressure gauge elbow 2, a stop valve 3, an air pipe joint 4, a tank body 5 and a pressure releaser 8, wherein the lower part of the tank body 5 is connected with a high-pressure air source through the stop valve 3 and the air pipe joint 4, and the upper part of the tank body 5 is connected with the pressure gauge 1 through the pressure gauge elbow 2; the top of the tank body 5 is opened and provided with a first connecting flange 6 which is connected with a pressure releaser 8, thereby forming a closed space; the bottom of the tank 5 is a plane and is placed on the bottom surface of the transformer manufacturing site.
And a second connecting flange 9 on the pressure releaser 8 is matched with a first connecting flange 6 at the top of the tank body 5, and a sealing rubber gasket 10 is arranged between the second connecting flange 9 and the first connecting flange 6 and is fastened through a fixing bolt 7.
The air pipe joint 4 is a conical joint.
A method for checking a pressure release device of a transformer comprises the following steps:
preparing a test tool: the lower part of the tank body 5 is connected with a high-pressure air source through a stop valve 3 and an air pipe joint 4, and the upper part of the tank body 5 is connected with a pressure gauge 1 through a pressure gauge elbow 2; the top of the tank body 5 is opened and is provided with a first connecting flange 6; the bottom of the tank body 5 is a plane and is placed on the bottom surface of a transformer manufacturing site;
the test was carried out: in the transformer manufacturing process, before the pressure releaser is installed, a second connecting flange 9 on the pressure releaser 8 is matched with a first connecting flange 6 at the top of a tank body 5, a sealing rubber gasket 10 is arranged between the second connecting flange 9 and the first connecting flange 6 and is fastened through a fixing bolt 7, and therefore a closed space is formed;
the gas pipe connector 4 is connected with a gas pipe of a gas bottle, gas is continuously injected into the tank body 5, the internal pressure of the tank body 5 is improved, when the internal pressure reaches an action pressure value set by the pressure releaser, the pressure releaser acts to release the internal pressure after simulating a fault state of the power transformer, and therefore the inspection of the pressure releaser is realized; if the pressure release device does not reach the set action pressure value of the pressure release device for release, or the pressure release device does not reach the set action pressure value of the pressure release device for release, the pressure release device is proved to be unusable.
The air pipe joint 4 is conical, is convenient to install, is tightly connected and is not prone to air leakage; the air input of the gas can be controlled through the stop valve 3 so as to ensure an accurate pressure value; the pressure value is monitored by the pressure gauge 1.
The tank body is connected with the pressure releaser through the first connecting flange and the second connecting flange, is sealed through the sealing rubber gasket and is fastened through the fixing bolt, and the tool is conveniently fastened in place by using a fastening tool.
The tank body and the pressure releaser are sealed by the sealing rubber gasket and fastened by the fixing bolt, so that a closed space is formed. The pressure gauge is arranged on the side face of the tank body, and can read the pressure value at any time. Through filling nitrogen into airtight space, can adjust the pressure at any time, when adjusting pressure to pressure release ware operating pressure for detect pressure release ware can reliably move. The invention has the advantages of light weight, reliable connection, simple operation and repeated use. The invention has been applied to the inspection work of the pressure release device in the field of transformer manufacturing.
Claims (5)
1. The utility model provides a transformer pressure release ware verifying attachment which characterized in that: the pressure gauge comprises a pressure gauge (1), a pressure gauge elbow (2), a stop valve (3), an air pipe joint (4), a tank body (5) and a pressure releaser (8), wherein the lower part of the tank body (5) is connected with a high-pressure air source through the stop valve (3) and the air pipe joint (4), and the upper part of the tank body (5) is connected with the pressure gauge (1) through the pressure gauge elbow (2); the top of the tank body (5) is opened and is provided with a first connecting flange (6) which is connected with a pressure releaser (8), thereby forming a closed space; the bottom of the tank body (5) is a plane and is placed on the bottom surface of a transformer manufacturing site.
2. A transformer pressure relief tester as claimed in claim 1 wherein: and a second connecting flange (9) on the pressure releaser (8) is matched with a first connecting flange (6) at the top of the tank body (5), and a sealing rubber gasket (10) is arranged between the second connecting flange (9) and the first connecting flange (6) and is fastened through a fixing bolt (7).
3. A transformer pressure relief tester as claimed in claim 1 or 2, wherein: the air pipe joint (4) is a conical joint.
4. A method for checking a pressure release device of a transformer is characterized by comprising the following steps:
preparing a test tool: the lower part of the tank body (5) is connected with a high-pressure air source through a stop valve (3) and an air pipe joint (4), and the upper part of the tank body (5) is connected with a pressure gauge (1) through a pressure gauge elbow (2); the top of the tank body (5) is opened and is provided with a first connecting flange (6); the bottom of the tank body (5) is a plane and is placed on the bottom surface of a transformer manufacturing site;
the test was carried out: in the transformer manufacturing process, before the pressure releaser is installed, a second connecting flange (9) on the pressure releaser (8) is matched with a first connecting flange (6) at the top of a tank body (5), a sealing rubber gasket (10) is arranged between the second connecting flange (9) and the first connecting flange (6) and is fastened through a fixing bolt (7), and therefore a closed space is formed;
the gas pipe connector (4) is connected with a gas pipe of a gas bottle, gas is continuously injected into the tank body (5), the internal pressure of the tank body (5) is improved, when the internal pressure reaches an action pressure value set by the pressure releaser, the pressure releaser acts to release the internal pressure according to the fault state of the power transformer, and therefore the inspection of the pressure releaser is achieved; if the pressure release device does not reach the set action pressure value of the pressure release device for release, or the pressure release device does not reach the set action pressure value of the pressure release device for release, the pressure release device is proved to be unusable.
5. The method for verifying the pressure relief valve of a transformer as set forth in claim 4, wherein: the air pipe joint (4) is conical, so that the air pipe joint is convenient to install, is tightly connected and is not prone to air leakage; the air inflow of the gas can be controlled through the stop valve (3) so as to ensure an accurate pressure value; the pressure value is monitored by a pressure gauge (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111254193.XA CN114112188A (en) | 2021-10-27 | 2021-10-27 | Transformer pressure releaser inspection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111254193.XA CN114112188A (en) | 2021-10-27 | 2021-10-27 | Transformer pressure releaser inspection device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114112188A true CN114112188A (en) | 2022-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111254193.XA Withdrawn CN114112188A (en) | 2021-10-27 | 2021-10-27 | Transformer pressure releaser inspection device and method |
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| Country | Link |
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| CN (1) | CN114112188A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100122616A (en) * | 2009-05-13 | 2010-11-23 | 한전케이피에스 주식회사 | A valve test flange |
| CN103278312A (en) * | 2013-03-30 | 2013-09-04 | 国家电网公司 | Method and device for verifying pressure relief valve of transformer |
| CN103278297A (en) * | 2013-06-07 | 2013-09-04 | 山东沂蒙电力设备有限公司 | Testing device of transformer pressure relief valve |
| CN106053036A (en) * | 2016-05-19 | 2016-10-26 | 国网福建省电力有限公司 | Device and method for detecting main transformer relief valve on line |
| CN213121099U (en) * | 2020-09-28 | 2021-05-04 | 山东电工电气集团智能电气有限公司 | Pressure testing device suitable for various types of pressure release valves |
| CN216246995U (en) * | 2021-10-27 | 2022-04-08 | 保定保菱变压器有限公司 | Transformer pressure release ware verifying attachment |
-
2021
- 2021-10-27 CN CN202111254193.XA patent/CN114112188A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100122616A (en) * | 2009-05-13 | 2010-11-23 | 한전케이피에스 주식회사 | A valve test flange |
| CN103278312A (en) * | 2013-03-30 | 2013-09-04 | 国家电网公司 | Method and device for verifying pressure relief valve of transformer |
| CN103278297A (en) * | 2013-06-07 | 2013-09-04 | 山东沂蒙电力设备有限公司 | Testing device of transformer pressure relief valve |
| CN106053036A (en) * | 2016-05-19 | 2016-10-26 | 国网福建省电力有限公司 | Device and method for detecting main transformer relief valve on line |
| CN213121099U (en) * | 2020-09-28 | 2021-05-04 | 山东电工电气集团智能电气有限公司 | Pressure testing device suitable for various types of pressure release valves |
| CN216246995U (en) * | 2021-10-27 | 2022-04-08 | 保定保菱变压器有限公司 | Transformer pressure release ware verifying attachment |
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Application publication date: 20220301 |
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| WW01 | Invention patent application withdrawn after publication |