CN101276702A - Hexafluoride sulphur circuit breaker with heating protecting equipment - Google Patents
Hexafluoride sulphur circuit breaker with heating protecting equipment Download PDFInfo
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- CN101276702A CN101276702A CNA2008100112139A CN200810011213A CN101276702A CN 101276702 A CN101276702 A CN 101276702A CN A2008100112139 A CNA2008100112139 A CN A2008100112139A CN 200810011213 A CN200810011213 A CN 200810011213A CN 101276702 A CN101276702 A CN 101276702A
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- binding post
- tension pole
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Abstract
The invention discloses a sulphur hexafluoride breaker having a heating protection device and capable of normally working in the outdoor circumstance having low temperature (below minus 30 DEG C). The breaker is provided with an insulating sealing shell (1) in which an upper insulating pull rod (2), a lower insulating pull rod (3) and an upper contact (4), a lower contact (5) respectively fixed at front ends of the insulating pull rod (2) and the lower insulating pull rod (3) are provided; a temperature sensing element (7) and an electrothermal element (8) are provided below a lateral insulating board (6) which is provided below the lower contact (5); bottom panel of the insulating sealing shell (1) is provided with a temperature sensing element binding post (9) connected with the temperature sensing element (7) and an electrothermal element binding post (10) connected with the electrothermal element (8); the temperature sensing element binding post (9) and the electrothermal element binding post (10) are connected with a temperature control circuit provided outside the insulating sealing shell (1).
Description
Technical field:
The present invention relates to a kind of sulfur hexafluoride breaker, operate as normal under the environment of especially a kind of low temperature out of doors (below 30 ℃) has the sulfur hexafluoride breaker of heating protecting device.
Background technology:
The high-voltage alternating sulfur hexafluoride breaker has been widely used in power industry, is that the high pressure of large-scale substation indispensability cut-offs product.The structure of high-voltage alternating sulfur hexafluoride breaker is that the insulated enclosure housing is arranged at present, in the insulated enclosure housing, be provided with the current transformer terminals join on insulated tension pole and following insulated tension pole, last insulated tension pole is respectively equipped with high-voltage contact with following insulated tension pole front end.Following insulated tension pole (contact) relies on other mechanical parts to contact, disconnect with last insulated tension pole (contact), finishes combined floodgate, the separating brake of current transformer high pressure.For prevent that contact from producing excessive electric arcing and eliminating its influence in when contact, in the insulated enclosure housing, be filled with usually to have good insulation performance, arc-extinguishing medium-sulphur hexafluoride (SF of arc extinguishing and heat conductivility
6) and outside contact, be provided with radome.
Sulphur hexafluoride (SF
6) be that a kind of colorless and odorless is nontoxic, stable chemical performance, do not burn, be at normal temperatures and pressures the material of gaseous state, its gas-liquid critical temperature is-45.6 ℃.Because sulfur hexafluoride gas-insulating intensity (under uniform electric field) is directly proportional with gas pressure under the normal temperature, the rated pressure of therefore existing high-voltage alternating sulfur hexafluoride breaker is 0.45MPa, and locking pressure is 0.4Mpa.Yet the pressure of sulphur hexafluoride is directly proportional with temperature again, when ambient temperature is-37 ℃, sulfur hexafluoride gas will be converted into liquid state (rated pressure in the insulated enclosure housing is 0.45Mpa), its pressure then is reduced to 0.36MPa, dielectric strength also can reduce because of insufficient pressure, close a floodgate this moment, sub-switching operation, all may produce bigger electric arcing, and accident such as explosion caused.Simultaneously, manometric normal opened contact is opened, locking the trip(ping) circuit of circuit breaker; if line failure; protective circuit starts circuit breaker then can not action message, will cause that accident further enlarges, and causes the bypass the immediate leadership generation of action or device damage accident of protection.So the operating ambient temperature of existing high-voltage alternating sulfur hexafluoride breaker is-30 ℃～+ 40 ℃, not only limited the cold district that always is lower than-30 ℃ winter and used, also exist because the potential safety hazard that the cooling (below 30 ℃) of burst is brought.
But, since the contact in the insulated enclosure housing charged be 10～220Kv high pressure and to the strict demand that is sealed with of gas leakage prevention, so the technical scheme of also not dealing with problems up to now.
Summary of the invention:
The present invention is in order to solve the above-mentioned technical problem of existing in prior technology, provide a kind of can be under the environment of low temperature (below 30 ℃) operate as normal, have the sulfur hexafluoride breaker of heating protecting device.
Technical solution of the present invention is: a kind of sulfur hexafluoride breaker with heating protecting device; insulated enclosure housing 1 is arranged; in insulated enclosure housing 1, be provided with insulated tension pole 2; following insulated tension pole 3 and be separately fixed at insulated tension pole 2; the upper contact head 4 of following insulated tension pole 3 front ends; following contact 5; below following contact 5, be provided with lateral isolation plate 6; there is temperature-sensing element 7 lateral isolation plate 6 belows; electric heating element 8; sealing and fixing has temperature-sensing element binding post 9 that joins with temperature-sensing element 7 and the electric heating element binding post 10 that joins with electric heating element 8 on the bottom panel of insulated enclosure housing 1, and temperature-sensing element binding post 9 and electric heating element binding post 10 join with the temperature-control circuit that is arranged on insulated enclosure housing 1 outside.
Described lateral isolation plate 6 is socketed in down on the insulated tension pole 3, and described temperature-sensing element 7 is fixed on the lateral isolation plate 6, and described electric heating element 8 is the heating wire that are wrapped in down on the insulated tension pole 3.
Be connected to vertical insulation board 11 with the outside of described lateral isolation plate 6.
The present invention insulate temperature-sensing element, electric heating element outside the higher-pressure region down being provided with the lateral isolation plate below the contact, has solved the sealing installation of temperature-sensing element binding post, electric heating element binding post simultaneously and has avoided problem such as temperature detect switch (TDS) electric spark influence.Simple in structure, safe and reliable, harmful effects such as no electromagnetism, electric heating element can heat sulfur hexafluoride gas in set temperature (5～20 ℃) scope, even operating ambient temperature is lower than-30 ℃, the temperature of sulfur hexafluoride gas also can be constant in all the time 5～20 ℃, make the pressure of sulphur hexafluoride reach the requirement of locking pressure, avoid because operating ambient temperature is crossed low all drawbacks of bringing.
Description of drawings:
Fig. 1 is the structural representation of the embodiment of the invention.
Embodiment:
Below in conjunction with description of drawings the specific embodiment of the present invention.
As shown in Figure 1: the same with prior art, insulated enclosure housing 1 is arranged, in insulated enclosure housing 1, be provided with insulated tension pole 2, following insulated tension pole 3 and be separately fixed at insulated tension pole 2, the upper contact head 4 of following insulated tension pole 3 front ends, following contact 5, unlike the prior art down be provided with lateral isolation plate 6 below the contact 5, there is temperature-sensing element 7 lateral isolation plate 6 belows, electric heating element 8, should guarantee set lateral isolation plate 6, temperature-sensing element 7 and electric heating element 8 do not influence moving up and down of insulated tension pole 3 down, sealing and fixing has temperature-sensing element binding post 9 that joins with temperature-sensing element 7 and the electric heating element binding post 10 that joins with electric heating element 8 on the bottom panel of insulated enclosure housing 1, temperature-sensing element binding post 9 and electric heating element binding post 10 join with the temperature-control circuit that is arranged on insulated enclosure housing 1 outside, and temperature-control circuit (XMT-22 type) is a prior art.Described lateral isolation plate 6 can be socketed in down on the insulated tension pole 3,7 of described temperature-sensing elements are fixed on the lateral isolation plate 6, described electric heating element 8 is the heating wire that are wrapped in down on the insulated tension pole 3, and lateral isolation plate 6, temperature-sensing element 7 and heating element 8 together move up and down with following insulated tension pole 3.
In order further to improve the insulation effect of lateral isolation plate 6, be connected to vertical insulation board 11 in the outside of lateral isolation plate 6.
Use the AC220V power supply, about heating power 1500W, the set bound temperature of the embodiment of the invention is respectively 20 ℃, 5 ℃, can require to adjust according to reality.
When the internal temperature of insulated enclosure housing 1 is lower than 5 ℃, temperature-sensing element 7 outputs signal to temperature-control circuit by temperature-sensing element binding post 9, the control switch of temperature-control circuit (A.C. contactor) action, the output heating signal, heats the sulphur hexafluoride in the insulated enclosure housing 1 to electric heating element 8 by electric heating element binding post 10; When the internal temperature of insulated enclosure housing 1 reaches 20 ℃, temperature-sensing element 7 outputs signal to temperature-control circuit by temperature-sensing element binding post 9, the control switch of temperature-control circuit (A.C. contactor) action, output signal, stops the heating of the sulphur hexafluoride in the insulated enclosure housing 1 to electric heating element 8 by electric heating element binding post 10.
Claims (3)
1. sulfur hexafluoride breaker with heating protecting device; insulated enclosure housing (1) is arranged; in insulated enclosure housing (1), be provided with insulated tension pole (2); following insulated tension pole (3) and be separately fixed at insulated tension pole (2); the upper contact head (4) of following insulated tension pole (3) front end; following contact (5); it is characterized in that: the below at following contact (5) is provided with lateral isolation plate (6); there is temperature-sensing element (7) lateral isolation plate (6) below; electric heating element (8); sealing and fixing has temperature-sensing element binding post (9) that joins with temperature-sensing element (7) and the electric heating element binding post (10) that joins with electric heating element (8) on the bottom panel of insulated enclosure housing (1), and temperature-sensing element binding post (9) and electric heating element binding post (10) join with the temperature-control circuit that is arranged on insulated enclosure housing (1) outside.
2. the sulfur hexafluoride breaker with heating protecting device according to claim 1; it is characterized in that: described lateral isolation plate (6) is socketed in down on the insulated tension pole (3); described temperature-sensing element (7) is fixed on the lateral isolation plate (6), and described electric heating element (8) is the heating wire that is wrapped in down on the insulated tension pole (3).
3. the sulfur hexafluoride breaker with heating protecting device according to claim 1 and 2 is characterized in that: be connected to vertical insulation board (11) with the outside of described lateral isolation plate (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100112139A CN101276702A (en) | 2008-04-29 | 2008-04-29 | Hexafluoride sulphur circuit breaker with heating protecting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100112139A CN101276702A (en) | 2008-04-29 | 2008-04-29 | Hexafluoride sulphur circuit breaker with heating protecting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101276702A true CN101276702A (en) | 2008-10-01 |
Family
ID=39995985
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100112139A Pending CN101276702A (en) | 2008-04-29 | 2008-04-29 | Hexafluoride sulphur circuit breaker with heating protecting equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN101276702A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103548222A (en) * | 2011-05-24 | 2014-01-29 | 施耐德电器工业公司 | Electrical apparatus having a gas insulation containing a fluorinated compound |
| WO2014114208A1 (en) * | 2013-01-22 | 2014-07-31 | Jin Haiyong | Sulphur hexafluoride gas liquefaction prevention apparatus of sulphur hexafluoride high-voltage electrical device |
| WO2014113913A1 (en) * | 2013-01-22 | 2014-07-31 | Jin Haiyong | Method for preventing sulfur hexafluoride gas liquefaction of high-voltage electrical equipment |
| CN104637726A (en) * | 2015-03-02 | 2015-05-20 | 周盈裕 | Environment-friendly arc extinguish chamber for single-pressure circuit breaker |
| CN111696817A (en) * | 2020-03-25 | 2020-09-22 | 天津平高智能电气有限公司 | High-voltage switch and shell thereof |
-
2008
- 2008-04-29 CN CNA2008100112139A patent/CN101276702A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103548222A (en) * | 2011-05-24 | 2014-01-29 | 施耐德电器工业公司 | Electrical apparatus having a gas insulation containing a fluorinated compound |
| CN103548222B (en) * | 2011-05-24 | 2017-12-15 | 施耐德电器工业公司 | With the gas isolated electrical equipment containing fluorochemical |
| WO2014114208A1 (en) * | 2013-01-22 | 2014-07-31 | Jin Haiyong | Sulphur hexafluoride gas liquefaction prevention apparatus of sulphur hexafluoride high-voltage electrical device |
| WO2014113913A1 (en) * | 2013-01-22 | 2014-07-31 | Jin Haiyong | Method for preventing sulfur hexafluoride gas liquefaction of high-voltage electrical equipment |
| WO2014113911A1 (en) * | 2013-01-22 | 2014-07-31 | Jin Haiyong | Liquefaction prevention apparatus for sulfur hexafluoride gas of sulfur hexafluoride high-voltage electrical equipment |
| CN104637726A (en) * | 2015-03-02 | 2015-05-20 | 周盈裕 | Environment-friendly arc extinguish chamber for single-pressure circuit breaker |
| CN111696817A (en) * | 2020-03-25 | 2020-09-22 | 天津平高智能电气有限公司 | High-voltage switch and shell thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081001 |