CN104748918B - Oil leakage detection device for power capacitor - Google Patents
Oil leakage detection device for power capacitor Download PDFInfo
- Publication number
- CN104748918B CN104748918B CN201510170951.8A CN201510170951A CN104748918B CN 104748918 B CN104748918 B CN 104748918B CN 201510170951 A CN201510170951 A CN 201510170951A CN 104748918 B CN104748918 B CN 104748918B
- Authority
- CN
- China
- Prior art keywords
- oil
- power capacitor
- container
- oil receiving
- receiving container
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/1702—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/1702—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids
- G01N2021/1704—Systems in which incident light is modified in accordance with the properties of the material investigated with opto-acoustic detection, e.g. for gases or analysing solids in gases
Abstract
The invention relates to a power capacitor oil leakage detection device, comprising: the oil receiving container is used for collecting oil leaked from the power capacitor and is arranged below the power capacitor; a power supply for applying voltage to the liquid in the oil receiving container and connected with the oil receiving container; and a photoacoustic spectrum detector for detecting gas generated after voltage is applied, which is arranged at the container opening of the oil container. Compared with the prior art, the invention has the advantages of reliable detection result, simple structure, low cost, convenient operation and the like.
Description
Technical Field
The invention relates to a monitoring device, in particular to an oil leakage detection device for a power capacitor.
Background
At present, in the power capacitor used in China, the expansion coefficients of the ceramic sleeve and the metal shell of the capacitor are different, so that the phenomenon of oil leakage at the root of the ceramic sleeve of the capacitor is caused. The existing common method is solved by manual inspection, but the manual monitoring method wastes manpower, finds that the oil leakage of the power capacitor has great uncertainty and instability, and if the oil leakage of the power capacitor is not found in time, the insulation level of the power capacitor after the oil leakage is reduced, so that breakdown and damage are caused, accidents are caused, the power production is directly influenced, and the personal safety is damaged. In addition, chinese patent CN201561844U provides an online monitoring device for oil leakage of a power capacitor, which includes an infrared monitoring probe set, a server and a computer, wherein the server is connected with the infrared monitoring probe set through a transmission line; the number of the infrared monitoring device probes in the infrared monitoring probe group is 5; the transmission line is an optical fiber. The device can carry out real-time on-line monitoring to power capacitor, but has the component more, and the cost is higher not enough.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide the oil leakage detection device for the power capacitor, which has the advantages of reliable detection result, simple structure, low cost and convenient operation.
The purpose of the invention can be realized by the following technical scheme:
an oil leakage detection device for a power capacitor, comprising:
the oil receiving container is used for collecting oil leaked from the power capacitor and is arranged below the power capacitor;
a power supply for applying voltage to the liquid in the oil receiving container and connected with the oil receiving container;
and a photoacoustic spectrum detector for detecting gas generated after voltage is applied, which is arranged at the container opening of the oil container.
The oil receiving container comprises a funnel bottom sealing container or an oil receiving disc.
The power supply includes a small transformer that is connected to the primary side of the power system.
The photoacoustic spectrum detector adopts a PGS-2 type photoacoustic gas sensor.
Compared with the prior art, the invention has the following advantages:
(1) the invention detects the gas change of the container mouth of the oil receiving container through the photoacoustic spectrum detector, thereby judging whether the oil leakage phenomenon occurs or not, and the detection result is reliable and effective;
(2) the device has the advantages of simple structure, low cost and convenient operation.
(3) The device has high response speed, and can find faults and give an alarm in time.
(4) The invention adopts the photoacoustic gas sensor, has high sensitivity, high accuracy and high reliability in the aspect of trace gas detection, and has the advantages of wide detection range, quick response, suitability for online detection, no need of consuming carrier gas, capability of realizing simultaneous detection of multi-component gas and the like.
(5) The invention adopts a PGS-2 type photoacoustic spectrometer with a single light beam structure and a microcomputer to carry out normalization processing on a spectrum source and acquire, process, store and display acoustic signals; simple structure and convenient operation.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
As shown in fig. 1, the present embodiment provides an oil leakage detection apparatus for a power capacitor, including an oil receiving container 1, a power supply 2, and a photoacoustic spectroscopy detector 3, where the oil receiving container 1 is disposed below a power capacitor 4 and is used for collecting oil leaked from the power capacitor, and the power supply 2 is connected to the oil receiving container and is used for applying a voltage to a liquid in the oil receiving container to discharge the liquid in the container; the photoacoustic spectrum detector 3 is arranged at the container opening of the oil container and used for detecting gas generated after voltage is applied and judging whether oil leaks or not. In this embodiment, the oil receiving container 4 may be a funnel-shaped bottom sealing container, or may be an oil receiving pan. The power supply 2 is a small transformer which is connected with the primary side of the power system to draw corresponding voltage and provide voltage for the liquid in the oil receiving container. The photoacoustic spectrum detector 3 adopts a PGS-2 type photoacoustic gas sensor.
The working principle of the oil leakage detection device for the power capacitor is as follows:
(1) before the detector is put into use, data output by the photoacoustic spectrum detector are recorded, namely the output result of the detector for detecting air is taken as a standard;
(2) after the power capacitor is put into use, if the oil does not leak out of the power capacitor, the data output by the photoacoustic spectrum detector at the moment is similar to the result in the step (1), so that the situation that the oil leaks out of the power capacitor can be judged;
(3) after the power capacitor is put into use, if oil leaks from the power capacitor, the data output by the photoacoustic spectrum detector and the result in the step (1) have larger access, so that the fact that the power capacitor leaks oil can be judged, and workers need to be sent to repair immediately.
(4) If the container is exposed to rainy days, a large amount of gas is not generated after the water in the container discharges, only hydrogen and oxygen are generated at best, the types of the gas are few, and the condition of misjudgment can be completely avoided through the comparison of the data output by the photoacoustic spectrum detector and the result in the step (1). If the container has oil, a large amount of various gases can still be generated through the action of discharge, and the photoacoustic spectrum detector can easily judge whether the power capacitor has oil leakage or not.
Claims (3)
1. A power capacitor oil leakage detection device, characterized by comprising:
the oil receiving container is used for collecting oil leaked from the power capacitor and is arranged below the power capacitor;
a power supply for applying voltage to the liquid in the oil receiving container and connected with the oil receiving container;
the photoacoustic spectrum detector is arranged at the container opening of the oil receiving container and is used for detecting the gas change of the container opening of the oil receiving container, and the photoacoustic spectrum detector adopts a PGS-2 type photoacoustic gas sensor.
2. A power capacitor oil leakage detection apparatus according to claim 1, wherein said oil receiving container comprises a funnel-shaped bottom-sealed container or an oil receiving pan.
3. A power capacitor oil leakage detection apparatus according to claim 1, characterized in that said power supply comprises a small transformer connected to the primary side of the power system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510170951.8A CN104748918B (en) | 2015-04-10 | 2015-04-10 | Oil leakage detection device for power capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510170951.8A CN104748918B (en) | 2015-04-10 | 2015-04-10 | Oil leakage detection device for power capacitor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104748918A CN104748918A (en) | 2015-07-01 |
| CN104748918B true CN104748918B (en) | 2020-08-11 |
Family
ID=53588937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510170951.8A Active CN104748918B (en) | 2015-04-10 | 2015-04-10 | Oil leakage detection device for power capacitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104748918B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112146814A (en) * | 2020-09-25 | 2020-12-29 | 国网安徽省电力有限公司电力科学研究院 | Gas relay sealing performance test device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539338A (en) * | 2011-12-30 | 2012-07-04 | 昆山和智电气设备有限公司 | Online monitoring system for gas content in transformer oil by using photoacoustic spectrum |
| CN104165880A (en) * | 2014-08-20 | 2014-11-26 | 国家电网公司 | Online detecting method of dissolved gas in transformer oil |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201561844U (en) * | 2009-10-30 | 2010-08-25 | 国网运行有限公司宜昌超高压管理处 | Online monitoring device for oil leakage of power capacitor |
| CN202305494U (en) * | 2011-10-18 | 2012-07-04 | 广州领步电气技术有限公司 | On-line chromatograph monitoring system for oil immersing type transformer |
-
2015
- 2015-04-10 CN CN201510170951.8A patent/CN104748918B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102539338A (en) * | 2011-12-30 | 2012-07-04 | 昆山和智电气设备有限公司 | Online monitoring system for gas content in transformer oil by using photoacoustic spectrum |
| CN104165880A (en) * | 2014-08-20 | 2014-11-26 | 国家电网公司 | Online detecting method of dissolved gas in transformer oil |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104748918A (en) | 2015-07-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210487949U (en) | Oil-immersed high-voltage equipment oil-light-sound-spectrum on-line monitoring device | |
| CN103629533B (en) | A kind of device and method of a plurality of buried natural gas line leakage arranged side by side | |
| CN203929630U (en) | TDLAS concentration of methane gas detection system | |
| CN103512988B (en) | Portable natural gas and methane gas optical detection device and identification method for natural gas and methane gas | |
| CN105372304A (en) | Portable gas leakage detection device | |
| CN204758243U (en) | Gaseous dew point of SF6 leaks tester | |
| CN110779966B (en) | Light gas alarm characteristic gas detection method and device | |
| CN104748918B (en) | Oil leakage detection device for power capacitor | |
| CN108088813B (en) | On-line detection device for metal elements in molten salt | |
| CN109917080A (en) | A kind of vacuum pollution prevention and control test macro of precision optical instrument | |
| CN207502451U (en) | A kind of multi-channel type gas analyzer | |
| CN110672277A (en) | SF6 gas field comprehensive detection system and method | |
| CN104237153A (en) | Online rapid detection system for gas content of transformer oil | |
| CN109738768A (en) | A kind of switchgear electric arc on-line measuring device | |
| CN211576948U (en) | Automatic comprehensive smoke and dust tester | |
| CN212111659U (en) | High-voltage live equipment corona discharge detection device based on acousto-optic-thermal combination technology | |
| CN201464363U (en) | Oil mist detector | |
| US20100230049A1 (en) | Apparatus for chemically etching a workpiece | |
| CN104655177A (en) | Continuous emission monitoring system | |
| CN206496874U (en) | A kind of online leakage monitoring instrument of water cooler based on optical fiber | |
| CN105571786A (en) | Gas leakage detection device | |
| CN217688565U (en) | Ammonia escape detection device | |
| CN105572194A (en) | Tying type gas leakage detection device | |
| CN104166089A (en) | Sulfur hexafluoride density relay calibration instrument gas source system | |
| CN106706721A (en) | Transformer oil moisture detecting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |