CN103364280A - Method for testing mechanical strength of transformer fuel tank - Google Patents
Method for testing mechanical strength of transformer fuel tank Download PDFInfo
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- CN103364280A CN103364280A CN2013103322002A CN201310332200A CN103364280A CN 103364280 A CN103364280 A CN 103364280A CN 2013103322002 A CN2013103322002 A CN 2013103322002A CN 201310332200 A CN201310332200 A CN 201310332200A CN 103364280 A CN103364280 A CN 103364280A
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- fuel tank
- transformer
- transformer fuel
- tank
- casing
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Abstract
The invention relates to the technical field of a transformer test and especially relates to a method for testing mechanical strength of a transformer fuel tank. The method comprises the following steps of 1, fully sealing all holes of a transformer fuel tank by a tool, a fixture and a sealing cover, and connecting the transformer fuel tank to a gas filling pipe by the sealed holes, and 2, opening a gas inflation valve and filling gas into the transformer fuel tank for 5-8min until the pressure in the transformer fuel tank is in a range of 15-20Kpa. Through filling gas into the transformer fuel tank to improve the pressure, measurement data of the tank cover and the tank wall is compared with maximum elastic deformation and maximum permanent deformation data so that it is determined if the transformer fuel tank deforms. Therefore, the method can effectively guarantee normal work of a transformer and prolongs a transformer service life. The method has the characteristics of simple processes and short operation time and is mainly suitable for a mechanical strength test on a three-phase oil-immersed transformer fuel tank having a voltage grade of 10KV and a capacity of 1600Kva.
Description
Technical field
The present invention relates to the transformer test technical field, be specifically related to oil tank of transformer mechanical robustness testing method.
Background technology
As everyone knows, fill oil in the oil tank of transformer, when the transformer load increase, oil temperature increases, transformer oil expands, at this moment, the fuel tank of transformer needs very high physical strength, the normal operation of guarantee transformer, otherwise metaboly can appear in oil tank of transformer, oil leakage phenomenon very easily occurs, thereby affect the transformer normal operation, shorten its serviceable life.
Summary of the invention
The oil tank of transformer mechanical robustness testing method that the purpose of this invention is to provide that a kind of technique is simple, step is easy, the running time is short, can clear and definite casing whether be out of shape.
In order to solve the existing problem of background technology, the present invention is by the following technical solutions: oil tank of transformer mechanical robustness testing method may further comprise the steps:
(1), use instrument, jig and gland bonnet that each hole sealing of fuel tank is tight, by the upper gas-filled tube of seal bore connection;
(2), open charging valve to fuel tank charge pressure to 15～20Kpa, time 5～8min;
(3), respectively on tank wall front, side and case lid, select two pairs of points of each weak part, after per two pairs of points are stretching with straight line, some measures each point to the vertical range of casing with Steel Ruler first on the straight line, data and the normal data recorded are contrasted, to determine whether casing is out of shape;
(4), the distortion casing must not deliver to next procedure, should look for relevant department to carry out analyzing and processing.
The present invention has following beneficial effect: oil tank of transformer mechanical robustness testing method of the present invention, by charge pressure in fuel tank, the measurement data of case lid and tank wall and maximum flexibility distortion and maximum permanent strain data are contrasted, thereby determine whether casing is out of shape, effectively guarantee the transformer normal operation, prolong its serviceable life.In addition, the present invention has the characteristics such as technique is simple, step is easy, the running time is short, and mainly being applicable to electric pressure is that 10KV, capacity are the mechanical robustness testing of 1600Kva and following three-phase oil immersion oil tank of transformer.
Embodiment
Below the present invention will be further described in detail.
Embodiment one: electric pressure is 10KV, and capacity is 315Kva and following three-phase oil immersion transformer;
Oil tank of transformer mechanical robustness testing method may further comprise the steps:
(1), use instrument, jig and gland bonnet that each hole sealing of fuel tank is tight, by the upper gas-filled tube of seal bore connection; Must not leak gas herein;
(2), open charging valve to the fuel tank charge pressure to 20Kpa, time 5min;
(3), respectively on tank wall front, side and case lid, select two pairs of points of each weak part, after per two pairs of points are stretching with straight line, some measures each point to the vertical range of casing with Steel Ruler first on the straight line, data and the normal data recorded are contrasted, to determine whether casing is out of shape; Need to prove that the maximum flexibility of case lid is deformed into 1.5t, maximum is permanently deformed to 0.5t; The maximum flexibility of tank wall is deformed into 3t, and maximum is permanently deformed to 1.5t; The maximum flexibility of strengthening iron is deformed into 2t, and maximum is permanently deformed to 1t; T is the steel plate thickness of test place;
(4), the distortion casing must not deliver to next procedure, should look for relevant department to carry out analyzing and processing.In the process of the test of present embodiment, inspection and testing crew can not leave the scene, to strictly monitor the fuel tank deformation, when the fuel tank pressure relief, the operator will leave inflation inlet, do not allow in container, to throw away any article by inflation inlet, in addition, the product that carries out mechanical robustness testing must level up put steady.
Embodiment two: electric pressure is 10KV, and capacity is 400Kva and following three-phase oil immersion transformer;
Oil tank of transformer mechanical robustness testing method may further comprise the steps:
(1), use instrument, jig and gland bonnet that each hole sealing of fuel tank is tight, by the upper gas-filled tube of seal bore connection;
(2), open charging valve to the fuel tank charge pressure to 15Kpa, time 8min;
(3), respectively on tank wall front, side and case lid, select two pairs of points of each weak part, after per two pairs of points are stretching with straight line, some measures each point to the vertical range of casing with Steel Ruler first on the straight line, data and the normal data recorded are contrasted, to determine whether casing is out of shape;
(4), the distortion casing must not deliver to next procedure, should look for relevant department to carry out analyzing and processing.
Embodiment three: electric pressure is 10KV, and capacity is 1600Kva and following three-phase oil immersion transformer;
Oil tank of transformer mechanical robustness testing method may further comprise the steps:
(1), use instrument, jig and gland bonnet that each hole sealing of fuel tank is tight, by the upper gas-filled tube of seal bore connection;
(2), open charging valve to the fuel tank charge pressure to 18Kpa, time 7min;
(3), respectively on tank wall front, side and case lid, select two pairs of points of each weak part, after per two pairs of points are stretching with straight line, some measures each point to the vertical range of casing with Steel Ruler first on the straight line, data and the normal data recorded are contrasted, to determine whether casing is out of shape;
(4), the distortion casing must not deliver to next procedure, should look for relevant department to carry out analyzing and processing.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, other modifications that those of ordinary skills make technical scheme of the present invention or be equal to replacement, only otherwise break away from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of the claim scope of the present invention.
Claims (1)
1. oil tank of transformer mechanical robustness testing method is characterized in that, may further comprise the steps:
(1), use instrument, jig and gland bonnet that each hole sealing of fuel tank is tight, by the upper gas-filled tube of seal bore connection;
(2), open charging valve to fuel tank charge pressure to 15～20Kpa, time 5～8min;
(3), respectively on tank wall front, side and case lid, select two pairs of points of each weak part, after per two pairs of points are stretching with straight line, some measures each point to the vertical range of casing with Steel Ruler first on the straight line, data and the normal data recorded are contrasted, to determine whether casing is out of shape;
(4), the distortion casing must not deliver to next procedure, should look for relevant department to carry out analyzing and processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103322002A CN103364280A (en) | 2013-08-01 | 2013-08-01 | Method for testing mechanical strength of transformer fuel tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013103322002A CN103364280A (en) | 2013-08-01 | 2013-08-01 | Method for testing mechanical strength of transformer fuel tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103364280A true CN103364280A (en) | 2013-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013103322002A Pending CN103364280A (en) | 2013-08-01 | 2013-08-01 | Method for testing mechanical strength of transformer fuel tank |
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| CN (1) | CN103364280A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674722A (en) * | 2013-12-18 | 2014-03-26 | 中国西电电气股份有限公司 | High-intensity seal welding oil tank normal pressure test method and normal pressure test system based on same |
| CN105445110A (en) * | 2015-12-29 | 2016-03-30 | 保定天威电气设备结构有限公司 | Simple method for testing mechanical strength of transformer oil tank |
| CN113252462A (en) * | 2021-06-07 | 2021-08-13 | 潍柴动力股份有限公司 | Method and system for detecting gas cylinder and readable storage medium |
Citations (4)
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| CN201926410U (en) * | 2011-01-10 | 2011-08-10 | 奇瑞汽车股份有限公司 | Battery thickness change detection tooling |
| CN102426142A (en) * | 2011-09-14 | 2012-04-25 | 西安石油大学 | Mechanics experiment system apparatus and experimental method for external pressure deformation of tubing |
| CN202916061U (en) * | 2012-11-29 | 2013-05-01 | 上海尚泰环保配件有限公司 | A compressive strength testing device of an electromagnetic pulse valve housing |
| CN103175659A (en) * | 2013-02-04 | 2013-06-26 | 李连清 | Technological method for testing natural gas cylinders |
-
2013
- 2013-08-01 CN CN2013103322002A patent/CN103364280A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201926410U (en) * | 2011-01-10 | 2011-08-10 | 奇瑞汽车股份有限公司 | Battery thickness change detection tooling |
| CN102426142A (en) * | 2011-09-14 | 2012-04-25 | 西安石油大学 | Mechanics experiment system apparatus and experimental method for external pressure deformation of tubing |
| CN202916061U (en) * | 2012-11-29 | 2013-05-01 | 上海尚泰环保配件有限公司 | A compressive strength testing device of an electromagnetic pulse valve housing |
| CN103175659A (en) * | 2013-02-04 | 2013-06-26 | 李连清 | Technological method for testing natural gas cylinders |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674722A (en) * | 2013-12-18 | 2014-03-26 | 中国西电电气股份有限公司 | High-intensity seal welding oil tank normal pressure test method and normal pressure test system based on same |
| CN103674722B (en) * | 2013-12-18 | 2016-08-17 | 中国西电电气股份有限公司 | A kind of method of high intensity soldering and sealing fuel tank positive pressure test and positive pressure test system thereof |
| CN105445110A (en) * | 2015-12-29 | 2016-03-30 | 保定天威电气设备结构有限公司 | Simple method for testing mechanical strength of transformer oil tank |
| CN113252462A (en) * | 2021-06-07 | 2021-08-13 | 潍柴动力股份有限公司 | Method and system for detecting gas cylinder and readable storage medium |
| CN113252462B (en) * | 2021-06-07 | 2021-10-01 | 潍柴动力股份有限公司 | Method and system for detecting gas cylinder and readable storage medium |
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Application publication date: 20131023 |