CN201765090U - Gas leakage detection device of sulfur hexafluoride high-voltage vacuum switch - Google Patents
Gas leakage detection device of sulfur hexafluoride high-voltage vacuum switch Download PDFInfo
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- CN201765090U CN201765090U CN2009202197697U CN200920219769U CN201765090U CN 201765090 U CN201765090 U CN 201765090U CN 2009202197697 U CN2009202197697 U CN 2009202197697U CN 200920219769 U CN200920219769 U CN 200920219769U CN 201765090 U CN201765090 U CN 201765090U
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- vacuum switch
- humidity
- voltage vacuum
- sulfur hexafluoride
- voltage
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Abstract
The utility model relates to a gas leakage detection device of a sulfur hexafluoride high-voltage vacuum switch. The humidity values inside and outside a high-voltage switch through the respective measurement via a first humidity sensor arranged in the sulfur hexafluoride high-voltage vacuum switch and a second humidity sensor arranged outside the sulfur hexafluoride high-voltage vacuum switch are obtained, a controller is used for calculating and obtaining the difference value of the two humidity values, and the difference value is compared with a value input into the controller in advance, and a warning device is started by the controller when the difference value is smaller than the value. The gas leakage detection device of the sulfur hexafluoride high-voltage vacuum switch of the utility model solves the technical problem that the traditional device for detecting the sulfur hexafluoride gas leakage can not detect whether the sulfur hexafluoride gas sealed in the outdoor high-voltage operation switch is leaked or not, and is particularly suitable for detecting whether the sulfur hexafluoride gas in sulfur hexafluoride high-voltage vacuum switch which is arranged outdoors and operates with high voltage is leaked or not.
Description
Technical field
The utility model relates to the device whether a kind of detected gas leaks.The device whether specifically a kind of sulfur hexafluoride gas that detects sealing in the SF 6 high-voltage vacuum switch leaks.
Background technology
High-voltage switch gear requires to have stronger insulativity between each parts of its inside, so needs larger distance at interval between each parts of high-voltage switch gear, thereby prevents to be caused short circuit by voltage breakdown, and this just makes that the volume of switch is bigger.Present high-voltage switch gear generally adopts in switch the mode of filling with inert gas to come reinforced insulation, and the inert gas that is adopted is modal to be sulfur hexafluoride.Sulfur hexafluoride is a kind of gas with better electrical insulation properties, can be in maintained switch dwindles the distance between each parts under the prerequisite of each parts insulation, thereby reduces the shared volume of switch.Sulfur hexafluoride is the stronger inert gas of a kind of inertia simultaneously, can prevent that the component of machine in the switch is corroded because of the influence that is subjected to external environment, thereby prolong the serviceable life of switch.If the sealing of switch goes wrong as producing the slit, sulfur hexafluoride gas is leaked, cause inner each parts insulate of switch to reduce, may cause effluve, even generation punctures air and then risk of short-circuits, the water vapor that enters also can corrode the element in the switch, thereby influences the serviceable life of switch.Therefore whether detect sulfur hexafluoride gas in the SF 6 high-voltage vacuum switch leaks and is very important.
For this reason, publication number is that the patent documentation of CN2898824Y discloses a kind of SF
6The quantitative leak detector that gas leaks is between the battery and high-voltage pulse circuit of this leak locator, high-voltage pulse circuit and SF
6Link to each other SF between the sensor with lead
6Sensor, O
2Sensor connects with microprocessor with lead respectively, and liquid crystal display links to each other with microprocessor with multiple conducting wires, and microprocessor links to each other with lead respectively with 2 audible alarm unit.This SF
6The principle of the quantitative leak detector that gas leaks is: determine by the content of measuring sulfur hexafluoride contained in the air whether the sulfur hexafluoride in the SF 6 high-voltage vacuum switch leaks.This pick-up unit is suitable for detecting the content of sulfur hexafluoride in the air in the workshop of the relative closure of producing isolating switch, to prevent causing the workman to produce dizziness because of airborne sulfur hexafluoride gas too high levels, vomiting, situation such as suffocate (seeing that the 1st page the 3rd section in this application instructions and Instructions Page 2 3-4 reciprocal is capable), but for being installed in outdoor isolating switch, even sulfur hexafluoride has produced leakage, also can be blown by wind one and loose, owing to the content of sulfur hexafluoride is crossed the low pick-up unit that causes and is detected less than the sulfur hexafluoride that leaks out, therefore, this instrument is inapplicable to being installed in outdoor isolating switch.In addition, the price of this instrument is very high, and every price is more than 100,000 yuan, also is unsuitable for being installed on each outdoor isolating switch whether sulfur hexafluoride leaked in real time detecting.
The utility model content
For this reason, technical problem to be solved in the utility model is to overcome leak locator that whether existing detection sulfur hexafluoride gas reveal and is unsuitable for being installed in the shortcoming that SF 6 high-voltage the vacuum switch outdoor and operation of band high voltage detects, thus provide a kind of be suitable for detecting be installed in whether reveal and with low cost, the practical pick-up unit of sulfur hexafluoride gas in the outdoor SF 6 high-voltage vacuum switch.
For solving the problems of the technologies described above, SF 6 high-voltage vacuum switch gas leak detection apparatus described in the utility model, comprise and be located at first humidity sensor that is used for measuring described SF 6 high-voltage vacuum switch interior humidity in the described SF 6 high-voltage vacuum switch, be located at described SF 6 high-voltage vacuum switch and be used for measuring second humidity sensor of described SF 6 high-voltage vacuum switch external environment condition humidity outward, described first humidity sensor all links to each other with control device with described second humidity sensor, described control device gather described first humidity sensor and second humidity sensor humidity data and with the difference of the humidity data gathered with compare by the predefined humidity of described control device.
Described SF 6 high-voltage vacuum switch humidity inside is lower than the humidity of described SF 6 high-voltage vacuum switch external environment condition.Described predefined humidity is less than the difference of the original humidity of outside local common minimum humidity of described SF 6 high-voltage vacuum switch and described SF 6 high-voltage vacuum switch inside.Described predefined humidity is more than or equal to zero or smaller or equal to 10%.Described predefined humidity is 5%.
Also be connected with warning device on the described control device, described warning device gives the alarm during less than described predefined humidity in described difference.
Technique scheme of the present utility model has the following advantages compared to existing technology: the utilization of (1) SF 6 high-voltage vacuum switch described in the utility model gas leak detection apparatus is located at first humidity sensor in the SF 6 high-voltage vacuum switch and is located at the second outer humidity sensor of SF 6 high-voltage vacuum switch measures in the described SF 6 high-voltage vacuum switch of acquisition respectively and the humidity of external environment condition, utilize control device to calculate the difference of the inside and outside humidity of described SF 6 high-voltage vacuum switch, and this difference and relatively in advance to the numerical value of control device input, when this difference during greater than this numerical value, illustrate that this SF 6 high-voltage vacuum switch does not produce leakage, extraneous water vapor does not enter, when this difference during less than predefined numerical value, illustrate that this SF 6 high-voltage vacuum switch has produced leakage, extraneous water vapor enters, and humidity increases; The detection principle that this shows the sulfur hexafluoride gas leak detecting device in the SF 6 high-voltage vacuum switch described in the utility model comes the detection principle of the leak locator whether detected gas leak different with of the prior art by sulfur hexafluoride content in the detection external environment condition, sulfur hexafluoride in the SF 6 high-voltage vacuum switch of the present utility model is not subjected to what restriction of sulfur hexafluoride content in the external environment condition, therefore is suitable for detecting to be installed in whether sulfur hexafluoride gas leaks in the outdoor SF 6 high-voltage vacuum switch; (2) the sulfur hexafluoride gas leak detecting device in the SF 6 high-voltage vacuum switch described in the utility model also is provided with warning device, when the difference of the humidity value of the humidity value of first humidity sensor and second humidity sensor during less than predefined numerical value, sulfur hexafluoride gas in the prompting user SF 6 high-voltage vacuum switch has produced leakage, therefore can detect in real time; (3) as previously mentioned in the detection air of prior art the leak locator of sulfur hexafluoride content to the content requirement of sulfur hexafluoride than higher, and involve great expense, having determined by above 2 that it is unsuitable for being installed on the outdoor SF 6 high-voltage vacuum switch whether gas leaked in real time monitors, and whether the sulfur hexafluoride gas leak detecting device in the SF 6 high-voltage vacuum switch described in the utility model is to detect sulfur hexafluoride gas and leak by detecting humidity inside and outside the described SF 6 high-voltage vacuum switch, and each parts of described gas leak detection apparatus (as humidity sensor etc.) all can be bought from market, low price, therefore the cost of described gas leak detection apparatus is lower, be suitable for being installed in each and be positioned on outdoor SF 6 high-voltage vacuum switch whether sulfur hexafluoride gas leaked in real time and monitor, practicality is very strong; (4) though humidity all over China is different different because of geographical environment, in addition, the humidity in a certain area also can change to some extent with the variation of season and weather, but the minimum humidity of various places is all greater than the humidity in the described SF 6 high-voltage vacuum switch under normal conditions, the specified moisture numerical value of importing in advance in the utility model in the described control device is the local common minimum humidity value and the difference of described SF 6 high-voltage vacuum switch interior humidity, when the sulfur hexafluoride gas in the described SF 6 high-voltage vacuum switch takes place to leak, since water vapor enter described switch then the humidity that records of first humidity sensor become big, then the humidity that records of second humidity sensor and first humidity sensor difference that records humidity diminishes, until being zero, report to the police to the user during in this difference less than predefined humidity, therefore not only cost is low but also can satisfy the demand whether interior sulfur hexafluoride of detection SF 6 high-voltage vacuum switch in real time leaks gas for SF 6 high-voltage vacuum switch of the present utility model, has extremely strong practicality and market outlook.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, according to specific embodiment of the utility model also in conjunction with the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is a SF 6 high-voltage vacuum switch gas leak detection apparatus structural representation;
Fig. 2 is the process flow diagram of SF 6 high-voltage vacuum switch gas leak detection method.
Reference numeral is expressed as among the figure: 1-SF 6 high-voltage vacuum switch, 2-first humidity sensor, 3-second humidity sensor, 4-control device, 5-warning device.
Embodiment
Whether SF 6 high-voltage vacuum switch gas leak detection apparatus described in the utility model is used to detect the sulfur hexafluoride gas that seals in the SF 6 high-voltage vacuum switch 1 in the present embodiment and leaks.Be filled with dry sulfur hexafluoride gas in the body of SF 6 high-voltage vacuum switch 1 and the mechanism, utilize the inertia of sulfur hexafluoride gas to strengthen the electrical insulation properties of SF 6 high-voltage vacuum switch inside, thereby make each parts of SF 6 high-voltage vacuum switch body dwindle under the prerequisite that keeps insulation each other between from reducing, thereby reduce the volume of SF 6 high-voltage vacuum switch.Sulfur hexafluoride is a kind of heavier inert gas simultaneously, can prevent that component of machine is corroded by external environment in the SF 6 high-voltage vacuum switch.
In the present embodiment, in SF 6 high-voltage vacuum switch 1, be provided with first humidity sensor 2 that is used for measuring SF 6 high-voltage vacuum switch internal relative humidity, outside the outside of high-voltage switch gear 1 is provided with, be used for measuring second humidity sensor 3 of SF 6 high-voltage vacuum switch external environment condition relative humidity.Described first humidity sensor 2 all links to each other with control device 4 by lead with described second sensor 3, and described control device 4 also is connected with warning device 5 by lead.Be filled with sulfur hexafluoride in the SF 6 high-voltage vacuum switch 1, the content of water vapor seldom, so the humidity in the SF 6 high-voltage vacuum switch 1 is less than the humidity of SF 6 high-voltage vacuum switch external environment.Described first humidity sensor 2 is transferred to described control device 4 with humidity value in the SF 6 high-voltage vacuum switch 1 that records.The humidity of described second humidity sensor, 3 surveying work environment also is input to the humidity that records in the described control device 4.Described control device 4 adopts the microcontroller key control unit, and the information of described first humidity sensor 2 and 3 inputs of second humidity sensor is sampled.Described control device 4 is provided with a specific humidity by the input part (not shown) of described control device 4, described specific humidity determines that according to the humidity situation of locality the humidity that local common minimum humidity deducts in the SF 6 high-voltage vacuum switch 1 is this specific humidity.Be set between the 0-10% according to all over China this specific humidity of weather conditions; yet this numerical range can change with the climate change of locality to some extent being applied in the world other local time, but so long as measures device that whether gas wherein leak all within protection domain of the present utility model by measuring humidity difference inside and outside the described SF 6 high-voltage vacuum switch.In the present embodiment, described input part is a keyboard, and the specific humidity of being imported is 10%.The SF 6 high-voltage vacuum switch 1 external environment condition humidity value and the humidity inside value of 4 pairs of samplings of described control device are handled, and draw the difference between the two, and this difference is compared with predefined humidity 10%.Described warning device 5 is provided with green, red two pilot lamp, when described difference more than or equal to 10% the time, the green light of warning device 5 is bright, shows that the gas in the SF 6 high-voltage vacuum switch 1 is not revealed.When described difference less than 10% the time, the red light of warning device 5 is bright, shows that the sulfur hexafluoride gas in the SF 6 high-voltage vacuum switch 1 is revealed, and should take immediate steps.
The method of using the SF 6 high-voltage vacuum switch gas leakage detection device described in the present embodiment to detect, may further comprise the steps: the first step, the ambient humidity in interior humidity that records when dispatching from the factory and actual area of using according to SF 6 high-voltage vacuum switch 1, input part by control device 4 is imported a predefined humidity to described control device 4, is 10% in the present embodiment.In second step, utilize described first humidity sensor 2 and second humidity sensor 3 to measure the humidity of SF 6 high-voltage vacuum switch 1 inside and outside environment respectively, and the humidity that records is delivered to control device 4 respectively.The SF 6 high-voltage vacuum switch 1 inside and outside humidity of 4 pairs of inputs of described control device is sampled respectively, and calculates the difference between the two.In the 3rd step, the described difference that previous step draws is suddenly compared with predefined humidity.When described difference more than or equal to 10% the time, connect the green light of warning device 5, show that the sulfur hexafluoride gas in the SF 6 high-voltage vacuum switch is not revealed.When described difference less than 10% the time, connect the red light of warning device 5, show that the sulfur hexafluoride gas in the SF 6 high-voltage vacuum switch is revealed, should take immediate steps.
In the above-described embodiments, predefined humidity can also be 5%, and warning device 5 is an emergency alarm bell, when described difference emergency alarm bell less than 5% time rings, enables to hear that the staff of bell ring takes appropriate measures rapidly.
Obviously, the foregoing description only is for example clearly is described, and is not the qualification to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among the protection domain of the utility model creation.
Claims (4)
1. SF 6 high-voltage vacuum switch gas leak detection apparatus, comprise and be located at first humidity sensor that is used for measuring described SF 6 high-voltage vacuum switch interior humidity in the described SF 6 high-voltage vacuum switch, be located at described SF 6 high-voltage vacuum switch and be used for measuring second humidity sensor of described SF 6 high-voltage vacuum switch external environment condition humidity outward, described first humidity sensor all links to each other with control device with described second humidity sensor, described control device gather described first humidity sensor and second humidity sensor humidity data and with the difference of the humidity data gathered with compare by the predefined humidity of described control device.
2. SF 6 high-voltage vacuum switch gas leak detection apparatus according to claim 1 is characterized in that: described predefined humidity is less than the difference of the original humidity of outside local common minimum humidity of described SF 6 high-voltage vacuum switch and described SF 6 high-voltage vacuum switch inside.
3. SF 6 high-voltage vacuum switch gas leak detection apparatus according to claim 2 is characterized in that: described predefined humidity is more than or equal to zero and smaller or equal to 10%.
4. according to any described SF 6 high-voltage vacuum switch gas leak detection apparatus among the claim 1-3, it is characterized in that: also be connected with warning device on the described control device, described warning device gives the alarm during less than described predefined humidity in described difference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202197697U CN201765090U (en) | 2009-10-21 | 2009-10-21 | Gas leakage detection device of sulfur hexafluoride high-voltage vacuum switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202197697U CN201765090U (en) | 2009-10-21 | 2009-10-21 | Gas leakage detection device of sulfur hexafluoride high-voltage vacuum switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201765090U true CN201765090U (en) | 2011-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202197697U Expired - Lifetime CN201765090U (en) | 2009-10-21 | 2009-10-21 | Gas leakage detection device of sulfur hexafluoride high-voltage vacuum switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201765090U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149324A (en) * | 2013-01-29 | 2013-06-12 | 温州电力局 | Method and device for high-tension switch cabinet gas detection |
| CN102042899B (en) * | 2009-10-21 | 2014-11-12 | 浙江华仪电器科技有限公司 | Device and method for detecting gas leakage of sulfur hexafluoride high pressure vacuum switch |
-
2009
- 2009-10-21 CN CN2009202197697U patent/CN201765090U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102042899B (en) * | 2009-10-21 | 2014-11-12 | 浙江华仪电器科技有限公司 | Device and method for detecting gas leakage of sulfur hexafluoride high pressure vacuum switch |
| CN103149324A (en) * | 2013-01-29 | 2013-06-12 | 温州电力局 | Method and device for high-tension switch cabinet gas detection |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Fuping Inventor after: Yu Wenfang Inventor before: Li Fuping |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: LI FUPING TO: LI FUPING YU WENFANG |
|
| ASS | Succession or assignment of patent right |
Owner name: ZHEJIANG HUAYI ELECTRIC APPARATUS TECHNOLOGY CO., Free format text: FORMER OWNER: ZHEJIANG HUAYI ELECTRIC EQUIPMENT SCI-TECH CO., LTD. Effective date: 20111229 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20111229 Address after: Seven weft Road Economic Development Zone Huayi Industrial Park in Yueqing city of Zhejiang province in 325600 Patentee after: Zhejiang Huayi Electrical Appliance Technology Co., Ltd. Address before: Seven weft Road Economic Development Zone Huayi Industrial Park in Yueqing city of Zhejiang province in 325600 Patentee before: Huayi Elec. Apparatus Group Co., Ltd. |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20110316 Effective date of abandoning: 20091021 |
|
| RGAV | Abandon patent right to avoid regrant |