CN111443109A - Condensation alarm induction plate for mechanism box of transformer substation - Google Patents
Condensation alarm induction plate for mechanism box of transformer substation Download PDFInfo
- Publication number
- CN111443109A CN111443109A CN201910038883.8A CN201910038883A CN111443109A CN 111443109 A CN111443109 A CN 111443109A CN 201910038883 A CN201910038883 A CN 201910038883A CN 111443109 A CN111443109 A CN 111443109A
- Authority
- CN
- China
- Prior art keywords
- condensation
- mechanism box
- hydrophilicity
- substation
- transformer substation
- 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.)
- Pending
Links
- 238000009833 condensation Methods 0.000 title claims abstract description 34
- 230000005494 condensation Effects 0.000 title claims abstract description 34
- 230000007246 mechanism Effects 0.000 title claims abstract description 22
- 230000006698 induction Effects 0.000 title abstract description 7
- 239000000758 substrate Substances 0.000 claims abstract description 16
- 230000003647 oxidation Effects 0.000 claims abstract description 15
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 15
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000009413 insulation Methods 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000009825 accumulation Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
Abstract
The invention relates to a humidity sensor, in particular to a condensation alarm induction plate of a substation mechanism box applied to a national power grid system. The condensation alarm sensing plate of the substation mechanism box is formed by a large-area aluminum substrate with good temperature characteristic and hydrophilicity, has good temperature characteristic and hydrophilicity when working in an electric control cabinet, ensures reliable condensation on the surface in practical application, and solves the problems of high temperature and poor hydrophilicity of the surface of a sensor of the traditional glass fiber substrate. The oxidation insulating layer formed by oxidation treatment of the surface of the aluminum substrate and the labyrinth circuit arranged on the oxidation insulating layer can ensure the timeliness and reliability of alarming so as to ensure the safe use of the transformer substation.
Description
Technical Field
The invention relates to a humidity sensor, in particular to a condensation alarm induction plate of a substation mechanism box, which is applied to a national power grid system.
Background
With the development of national economy and the rapid promotion of intelligent power grids, the transformer substation is used as the backbone of the national power grid core, and the safe operation of equipment is more important. The national requirements for safe operation of power grid substations are increasing. There are a large number of primary and secondary equipment operating mechanism boxes and terminal boxes in a substation. Condensation and water accumulation phenomena exist in the box bodies of the operating mechanisms due to various reasons (temperature and humidity of the environment of the transformer substation changes, on-site precipitation, accumulated snow, cable trench water accumulation and the like) in different degrees. The condensation refers to the phenomenon of water drop condensation on the surface of the inner wall when the temperature of the surface of the inner wall of a primary and secondary equipment box and a cabinet body of the transformer substation is reduced to be lower than the dew point temperature. Whether condensation occurs depends on the ambient temperature, the temperature inside the cabinet, the relative humidity and the dew point temperature.
The harm of condensation generated inside the mechanism box is as follows:
dew formed on a terminal row in the mechanism box easily causes AC/DC short circuit grounding, motor burning loss and switch misoperation; dew formed on the switch operating mechanism can corrode metal parts in the mechanism, so that corrosion of equipment is accelerated, and even the mechanism is jammed due to rust; most of porcelain bottles in the mechanism box do not consider waterproofness, and the phenomenon of creepage or flashover can be caused if condensation exists on the porcelain bottles, so that accidents are easy to happen.
In the prior art, humidity in a mechanism box is detected through a humidity sensor or box opening inspection is performed one by one. But it is difficult to detect moisture after a rain event by inspection of the cable through the conduit into the mechanism housing. At present, various methods for detecting condensation in a case by temperature and humidity detection systems exist in the market, but the actual application effect on site is poor, the main reason is that condensation is rapidly generated due to the fact that the temperature of the inner wall surface of a cabinet body is reduced, at the moment, the content (humidity) of water vapor in a mechanism case is reduced, and a temperature and humidity sensor does not reach a starting value; the humidity sensor detection device cannot completely reflect the condensation condition inside the cabinet body, so that the possibility of missing report exists. At present, a method for detecting condensation in a case by a labyrinth type raindrop sensor is available, but the leakage alarm rate is still high in practical use. Through experimental analysis, the main reason is the temperature accumulation effect on the surface of the raindrop sensor. The temperature inside the cabinet fluctuates, and dew condensation is likely to occur when the temperature inside the cabinet falls from a high temperature to a low temperature. The traditional raindrop sensor adopts a labyrinth circuit of a glass fiber substrate. The temperature characteristic difference of the glass fiber substrate is slow in heating, and in addition, the surface hydrophilicity of the glass fiber substrate is poor, so that the condensation is slower than that of metal components in the case in the cooling process. Once the metal parts in the case are condensed, the humidity in the case is reduced, and the rain sensor cannot be condensed. Thereby failing to detect the condensation and causing the alarm leakage.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a safe and reliable condensation alarm induction plate for a substation mechanism box, which has high sensitivity.
In order to solve the technical problems, the invention adopts the following technical scheme:
substation mechanism case condensation warning induction plate, including the veneer condensation sensor, the veneer condensation sensor comprises aluminium base board the surface of aluminium base board is equipped with the oxidation insulation layer be equipped with labyrinth type circuit on the oxidation insulation layer.
Compared with the prior art, the invention has the beneficial effects that:
the condensation alarm sensing plate of the substation mechanism box is formed by a large-area aluminum substrate with good temperature characteristic and hydrophilicity, has good temperature characteristic and hydrophilicity when working in an electric control cabinet, ensures reliable condensation on the surface in practical application, and solves the problems of high temperature and poor hydrophilicity of the surface of a sensor of the traditional glass fiber substrate. The oxidation insulating layer formed by oxidation treatment of the surface of the aluminum substrate and the labyrinth circuit arranged on the oxidation insulating layer can ensure the timeliness and reliability of alarming so as to ensure the safe use of the transformer substation.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural diagram of the side view of the structure of the present invention.
Detailed Description
Referring to the attached drawings 1 and 2, the condensation alarm induction plate of the substation mechanism box comprises a single-plate condensation sensor 1, wherein the single-plate condensation sensor 1 is composed of an aluminum substrate 2, an oxidation insulation layer 3 is arranged on the surface of the aluminum substrate 2, and a labyrinth circuit 4 is arranged on the oxidation insulation layer 3. The condensation alarm sensing plate of the substation mechanism box is formed by the large-area aluminum substrate 2 with good temperature characteristic and hydrophilicity, has good temperature characteristic and hydrophilicity when working in an electric control cabinet, ensures reliable surface condensation in practical application, overcomes the problems of high surface temperature and poor hydrophilicity of a sensor of a traditional glass fiber substrate, and realizes reliable condensation. The oxidation insulating layer formed by oxidation treatment on the surface of the aluminum substrate 2 and the labyrinth circuit 4 arranged on the oxidation insulating layer 3 can ensure the timeliness and reliability of alarming so as to ensure the safe use of the transformer substation.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention in any way, so that any person skilled in the art can make changes or modifications to the equivalent embodiments using the above disclosure. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are still within the protection scope of the present invention, unless they depart from the technical spirit of the present invention.
Claims (1)
1. Transformer substation's mechanism case condensation warning tablet, including veneer condensation sensor (1), its characterized in that: the single-plate condensation sensor (1) is composed of an aluminum substrate (2), an oxidation insulation layer (3) is arranged on the surface of the aluminum substrate (2), and a labyrinth circuit (4) is arranged on the oxidation insulation layer (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910038883.8A CN111443109A (en) | 2019-01-16 | 2019-01-16 | Condensation alarm induction plate for mechanism box of transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910038883.8A CN111443109A (en) | 2019-01-16 | 2019-01-16 | Condensation alarm induction plate for mechanism box of transformer substation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111443109A true CN111443109A (en) | 2020-07-24 |
Family
ID=71655629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910038883.8A Pending CN111443109A (en) | 2019-01-16 | 2019-01-16 | Condensation alarm induction plate for mechanism box of transformer substation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111443109A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101308110A (en) * | 2008-07-11 | 2008-11-19 | 中国电子科技集团公司第四十九研究所 | Low-power consumption double module integrated humidity sensitive chip with heating function and its manufacture method |
| CN101764193A (en) * | 2009-12-31 | 2010-06-30 | 深圳市蓝科电子有限公司 | High-heat conductivity and large-power LED lead frame and manufacture method thereof |
| CN102223767A (en) * | 2011-06-01 | 2011-10-19 | 何忠亮 | Production process for high heat-conduction circuit board |
| CN102686018A (en) * | 2011-03-17 | 2012-09-19 | 精工爱普生株式会社 | Substrate,infrared sensor and through electrode forming method |
| CN103557889A (en) * | 2013-11-14 | 2014-02-05 | 无锡信大气象传感网科技有限公司 | Device for improving response speed of temperature and humidity sensor |
| CN204288457U (en) * | 2014-12-04 | 2015-04-22 | 国网冀北电力有限公司张家口供电公司 | Condensation monitor and alarm system in transformer station |
| CN106681409A (en) * | 2017-02-14 | 2017-05-17 | 国家电网公司 | Temperature-humidity control system for terminal box of substation and control method |
| CN207069300U (en) * | 2017-06-01 | 2018-03-02 | 四川亚润科技有限公司 | A kind of terminal box of transformer substation with warning function |
-
2019
- 2019-01-16 CN CN201910038883.8A patent/CN111443109A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101308110A (en) * | 2008-07-11 | 2008-11-19 | 中国电子科技集团公司第四十九研究所 | Low-power consumption double module integrated humidity sensitive chip with heating function and its manufacture method |
| CN101764193A (en) * | 2009-12-31 | 2010-06-30 | 深圳市蓝科电子有限公司 | High-heat conductivity and large-power LED lead frame and manufacture method thereof |
| CN102686018A (en) * | 2011-03-17 | 2012-09-19 | 精工爱普生株式会社 | Substrate,infrared sensor and through electrode forming method |
| CN102223767A (en) * | 2011-06-01 | 2011-10-19 | 何忠亮 | Production process for high heat-conduction circuit board |
| CN103557889A (en) * | 2013-11-14 | 2014-02-05 | 无锡信大气象传感网科技有限公司 | Device for improving response speed of temperature and humidity sensor |
| CN204288457U (en) * | 2014-12-04 | 2015-04-22 | 国网冀北电力有限公司张家口供电公司 | Condensation monitor and alarm system in transformer station |
| CN106681409A (en) * | 2017-02-14 | 2017-05-17 | 国家电网公司 | Temperature-humidity control system for terminal box of substation and control method |
| CN207069300U (en) * | 2017-06-01 | 2018-03-02 | 四川亚润科技有限公司 | A kind of terminal box of transformer substation with warning function |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20200724 |