CN205303296U - Gaseous heat exchange device of SF6 circuit breaker explosion chamber - Google Patents
Gaseous heat exchange device of SF6 circuit breaker explosion chamber Download PDFInfo
- Publication number
- CN205303296U CN205303296U CN201521087433.1U CN201521087433U CN205303296U CN 205303296 U CN205303296 U CN 205303296U CN 201521087433 U CN201521087433 U CN 201521087433U CN 205303296 U CN205303296 U CN 205303296U
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- gas
- circuit breaker
- electromagnetic valve
- air pump
- arc
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Abstract
The utility model discloses a gaseous heat exchange device of SF6 circuit breaker explosion chamber, including gas holder, heater, air pump and plus the calorimeter, the air pump setting is inside the gas holder, the heater setting is in the inside bottom of gas holder, the gas delivery side of pump all is connected through pipeline and circuit breaker explosion chamber with the import, plus the calorimeter installs at the gas delivery side of pump with between importing, just plus the outside of calorimeter setting at the gas holder, install first solenoid valve and second solenoid valve in the import of air pump respectively, be equipped with third solenoid valve and fourth solenoid valve on the gas delivery side of pump respectively, install circuit breaker tonifying qi mouth and make up gas tonifying qi mouth on the pipeline be connected with the circuit breaker explosion chamber respectively. The utility model discloses simple structure, the installation easy through plus the calorimeter realize the gaseous real -time heating to SF6, the heat preservation effect is fine, prevents that SF6 gas from being liquefied under extremely cold condition, in addition plus the hot conduction efficiency of calorimeter high, can set for and accurate control heating temperature safe and reliable.
Description
Technical field
This utility model relates to power accessories field, specifically a kind of SF6Arc-extinguishing chamber of circuit breaker gas heat exchange system.
Background technology
Along with the development of power equipment manufacturing technology, SF6Chopper possesses the advantages such as break performance excellence, maintenance workload is little, mechanism is stable because of it, is able to spread, North China primary cut-out SF in power system6Equipment accounts for more than the 80% of armamentarium. 100% has been reached at the company 35kV having and above chopper oil-free rate.
But along with SF6Chopper runs the increase of quantity and the time limit, and its latent defect also reveals gradually. SF6Gas is as insulation and arc-extinguishing medium, its connecting-disconnecting function and SF6The density of gas is relevant. SF6Being a kind of macromole gas, liquefaction point is high, under the gas pressure of 0.6MPa, and SF6Gas liquefaction temperature is-27 DEG C. It is to say, when ambient temperature is down to-27 DEG C, rated pressure is the SF of 0.6MPa6In breaker body, gas will liquefy in a large number, cause that in arc-chutes, gas density reduces, breaking capacity of breaker declines. Now density monitor warning locking is " (locking) is reported to the police in liquefaction ", and now chopper cannot ensure connecting-disconnecting function.
At extremely frigid zones, winter temperature is very low, SF6The phenomenon of chopper " low pressure alarming " and " liquefaction warning locking " is very general. For preventing because circuit breaker lock causes the pernicious power grid accident of power supply area large-area power-cuts, each electric company all carried out ensureing the technical measures of chopper cold operation, priority have employed replacing low form density monitor, employing mixes gas, by chopper brownout operation, the many kinds of measures such as chopper low pressure blocking function are cancelled even at cool period, ensure that chopper runs safety, but all without receiving good effect.
In order to solve SF6Chopper (especially porcelain knob SF6Chopper) Problems existing in extremely frigid zones is applied, switch manufacturing firm and power department propose SF6The scheme that chopper is heated.Heat protocol is, mounting heater, attemperating unit and Far infrared heating plate under pole, and Far-infrared Heating power output plate is 1500W. Hot plate is arranged on the bottom of pole, temperature controller detect ambient temperature, when temperature is lower than-10 DEG C, automatically starts heater, when ambient temperature is higher than-10 DEG C, stops heating.
In order to obtain good heats, also install attemperator additional for breaker mechanism control chamber, but, porcelain knob SF6Chopper is made up of pole and mechanism case platform, its arc-chutes are in the insulator at pole top, internal structure is compact, for LW36-126 chopper, and its height overall 4680mm, wherein pole part height is about 2400mm, support porcelain knob height 1100mm, inside have insulated tension pole, this special structure to make transmission heat highly difficult, under the experimental enviroment of-15 DEG C, heating is almost without effect.
As depicted in figs. 1 and 2, " extremely frigid zones sulfur hexafluoride (the SF that my company researched and developed in 20136) chopper heater ", also it is one and solves SF6The scheme of chopper low-temperature liquefaction, its core technology is as follows:
Setting up an air accumulator at circuit breaker external, air accumulator passes through an appendix and SF6Chopper is connected. Store inside air accumulator and be about as much as SF6The gas of arc-extinguishing chamber of circuit breaker 1/3, and it is furnished with air pump and electromagnetic valve steering mechanism, there is also mounted a power in air accumulator is the infrared heater of 800W, directly to the SF in air accumulator6Gas heats, and then hot gas, is transported in chopper by air pump, then again through agreeing to pipeline, from SF6Chopper is extracted out cold air, is heated in air accumulator, is transported to again in chopper after heating, and so forth. This scheme is directly to SF6Gas is heated, and the thermal efficiency is high, and effect is certainly; And scenario-frame is simple, easy for installation, even without power failure in the process installed, and in having declared utility model patent in 2013.
Its operation principle is as follows: when ambient temperature is lower than-15 DEG C, starts heater, the gas in air accumulator is heated. First electromagnetic valve the 1, the 3rd electromagnetic valve 3 cuts out, and the second electromagnetic valve the 2, the 4th electromagnetic valve 4 is opened, and air pump 5 starts, in air accumulator 7 heated gas to arc-extinguishing chamber of circuit breaker carry; When breaker arc extinguishing chamber pressure reaches 0.55MPa, air pump 5 quits work, and carries the cold air in the hot gas entered and arc-chutes to merge; First electromagnetic valve the 1, the 3rd electromagnetic valve 3 is opened, and the second electromagnetic valve the 2, the 4th electromagnetic valve 4 cuts out, and air pump 5 starts, heater 6 starts, and bleeds from arc-extinguishing chamber of circuit breaker, when arc-extinguishing chamber of circuit breaker gas pressure is lower than 0.48MPa, air pump 5 stops, and starts to chopper gas transmission; So circulation, until ambient temperature is higher than-15 DEG C.
This device is to pass through SF6The flowing of gas, is sent to heat in arc-extinguishing chamber of circuit breaker, makes gas temperature in arc-chutes raise, stops SF6Chopper generation liquefaction phenomenon. When installing at the scene, it is necessary to the appendix connecting air accumulator 7 and arc-extinguishing chamber of circuit breaker is well incubated, and, this section of tubing must be enough short, and otherwise heats cannot ensure. And under extremely cold condition, even if appendix has done good insulation, appendix is very short, but effect is still undesirable.
For this situation, serious analysis, heating part and its structure to air accumulator 7, transform, designed " outer heat exchanger " so that this device can transmit more heat, has more practical value.
Utility model content
The purpose of this utility model is in that to provide a kind of SF6Arc-extinguishing chamber of circuit breaker gas heat exchange system, with the problem solving to propose in above-mentioned background technology.
For achieving the above object, this utility model provides following technical scheme:
A kind of SF6Arc-extinguishing chamber of circuit breaker gas heat exchange system, including air accumulator, heater, air pump and external heat device, described air pump is arranged on inside air accumulator, described heater is arranged on air accumulator inner bottom, the export and import of air pump is connected with arc-extinguishing chamber of circuit breaker each through pipeline, described external heat device is arranged between the export and import of air pump, and external heat device is arranged on the outside of air accumulator; The import of air pump is separately installed with the first electromagnetic valve and the second electromagnetic valve, gas delivery side of pump is respectively provided with the 3rd electromagnetic valve and the 4th electromagnetic valve, and first electromagnetic valve and the 4th electromagnetic valve be installed between the import of air pump and outlet, the second electromagnetic valve and the 3rd electromagnetic valve all connect with air accumulator; The pipeline being connected with arc-extinguishing chamber of circuit breaker is separately installed with chopper gas supplementing opening and new gas gas supplementing opening.
As further program of the utility model: described external heat device is sequentially connected in series soldering by heat transfer sheet, oil circuit piping, gas piping and electric heater and forms.
Compared with prior art, the beneficial effects of the utility model are: this utility model simple in construction, install and realize SF easily by external heat device6The heated in real-time of gas, heat insulation effect is fine, it is prevented that SF6Gas is liquefied under extremely cold condition, and the heat conduction efficiency of external heat device is high, it is possible to sets and accurately controls heating-up temperature, safe and reliable.
Accompanying drawing explanation
Fig. 1 is existing SF6The gas-heating apparatus schematic diagram of chopper.
Fig. 2 is existing SF6The internal structure schematic diagram of air accumulator in the gas-heating apparatus of chopper.
Fig. 3 is structural representation of the present utility model.
Fig. 4 is the structure chart of this utility model China and foreign countries heater.
In figure: 1-the first electromagnetic valve; 2-the second electromagnetic valve; 3-the 3rd electromagnetic valve; 4-the 4th electromagnetic valve; 5-air pump; 6-heater; 7-air accumulator; 8-external heat device; The new gas polishing mouth of 9-; 10-chopper polishing mouth; 11-pipeline; 12-arc-extinguishing chamber of circuit breaker; 13-circulation line; 14-electric heater.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments. Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection.
Refer to Fig. 3, in this utility model embodiment, a kind of SF6Arc-extinguishing chamber of circuit breaker gas heat exchange system, including air accumulator 7, heater 6, air pump 5 and external heat device 8, it is internal that air pump 5 is arranged on air accumulator 7, heater 6 is arranged on air accumulator 7 inner bottom, the export and import of air pump 5 is connected with arc-extinguishing chamber of circuit breaker 12 each through pipeline, external heat device 8 is arranged between the export and import of air pump 5, and external heat device 8 is arranged on the outside of air accumulator 7; The import of air pump 5 is separately installed with the first electromagnetic valve 1 and the second electromagnetic valve 2, the outlet of air pump 5 is respectively provided with the 3rd electromagnetic valve 3 and the 4th electromagnetic valve 4, first electromagnetic valve 1 and the 4th electromagnetic valve 4 are installed between the import of air pump 5 and outlet, and the second electromagnetic valve 2 all connects with air accumulator 7 with the 3rd electromagnetic valve 3; The pipeline being connected with arc-extinguishing chamber of circuit breaker 12 is separately installed with chopper gas supplementing opening 10 and new gas gas supplementing opening 9.
Job step of the present utility model is as follows:
(1) when ambient temperature is lower than-15 DEG C, starting heater, external heat device 7, heater 6 are started working, first heat time heating time 10min, after proceeding to normal operation, heat time heating time is 2min; Opening the second electromagnetic valve the 2, the 4th electromagnetic valve 4 and air pump 5, gas enters external heat device 8 through pipeline; External heat device 8 is the heat exchanger being brought rapidly up, and gas, after external heat device 8, is heated to 75 DEG C; Hot gas enters arc-extinguishing chamber of circuit breaker 12, merges with cold air in chopper;
(2) closing the second electromagnetic valve the 2, the 4th electromagnetic valve 4, open the first electromagnetic valve the 1, the 3rd electromagnetic valve 3 and air pump 5, gas enters air accumulator 7 through pipeline, if the gas in arc-extinguishing chamber of circuit breaker 12 liquefies, has the SF that liquefies on a small quantity6Entering air accumulator 7, and vaporize in air accumulator 8, thus causing air accumulator 7 temperature to reduce, the effect of heater 6 is mainly heated to air accumulator 7; After gas in air accumulator 7 is heated, being once again entrained into arc-extinguishing chamber of circuit breaker 12, the circulation of whole process carries out, until ambient temperature is higher than-15 DEG C.
As shown in Figure 4, when needs external heat device 8 heats, connecting the power supply of electric heater 14, electric heater 14 begins to warm up conduction of heat oil, conduction of heat oil in pipeline, starts the cycle over (thermodynamic activity), heat by heat transfer sheet be conducted in pipeline flow SF6Gas, it is achieved to SF6The heating of gas.
External heat device 8 is containing 60 heat transfer sheets, with oil circuit piping 13, SF6Gas piping, electric heater 14 soldering form, and heat conduction efficiency is high, simple in construction, it is possible to set and accurately control heating-up temperature, safe and reliable.
It is obvious to a person skilled in the art that this utility model is not limited to the details of above-mentioned one exemplary embodiment, and when without departing substantially from spirit of the present utility model or basic feature, it is possible to realize this utility model in other specific forms. Therefore, no matter from which point, embodiment all should be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims rather than described above, it is intended that all changes in the implication of the equivalency dropping on claim and scope included in this utility model. Any accompanying drawing labelling in claim should be considered as the claim that restriction is involved.
Claims (2)
1. a SF6Arc-extinguishing chamber of circuit breaker gas heat exchange system, including air accumulator, heater, air pump and external heat device, it is characterized in that, described air pump is arranged on inside air accumulator, described heater is arranged on air accumulator inner bottom, the export and import of air pump is connected with arc-extinguishing chamber of circuit breaker each through pipeline, and described external heat device is arranged between the export and import of air pump, and external heat device is arranged on the outside of air accumulator; The import of air pump is separately installed with the first electromagnetic valve and the second electromagnetic valve, gas delivery side of pump is respectively provided with the 3rd electromagnetic valve and the 4th electromagnetic valve, and first electromagnetic valve and the 4th electromagnetic valve be installed between the import of air pump and outlet, the second electromagnetic valve and the 3rd electromagnetic valve all connect with air accumulator; The pipeline being connected with arc-extinguishing chamber of circuit breaker is separately installed with chopper gas supplementing opening and new gas gas supplementing opening.
2. SF according to claim 16Arc-extinguishing chamber of circuit breaker gas heat exchange system, it is characterised in that described external heat device is sequentially connected in series soldering by heat transfer sheet, oil circuit piping, gas piping and electric heater and forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521087433.1U CN205303296U (en) | 2015-12-24 | 2015-12-24 | Gaseous heat exchange device of SF6 circuit breaker explosion chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521087433.1U CN205303296U (en) | 2015-12-24 | 2015-12-24 | Gaseous heat exchange device of SF6 circuit breaker explosion chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205303296U true CN205303296U (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521087433.1U Expired - Fee Related CN205303296U (en) | 2015-12-24 | 2015-12-24 | Gaseous heat exchange device of SF6 circuit breaker explosion chamber |
Country Status (1)
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| CN (1) | CN205303296U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2726858C1 (en) * | 2016-08-10 | 2020-07-16 | Абб Швайц Аг | Gas (sf6) insulation with thermal capacitor circuit breaker system |
| CN114093711A (en) * | 2021-11-11 | 2022-02-25 | 江苏大烨智能电气股份有限公司 | Environment-friendly gas-insulated circuit breaker switch |
| CN114597098A (en) * | 2022-03-31 | 2022-06-07 | 西安西电高压开关有限责任公司 | Column type circuit breaker with high-pressure heating |
-
2015
- 2015-12-24 CN CN201521087433.1U patent/CN205303296U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2726858C1 (en) * | 2016-08-10 | 2020-07-16 | Абб Швайц Аг | Gas (sf6) insulation with thermal capacitor circuit breaker system |
| CN114093711A (en) * | 2021-11-11 | 2022-02-25 | 江苏大烨智能电气股份有限公司 | Environment-friendly gas-insulated circuit breaker switch |
| CN114093711B (en) * | 2021-11-11 | 2024-05-28 | 江苏大烨智能电气股份有限公司 | Environment-friendly gas-insulated circuit breaker switch |
| CN114597098A (en) * | 2022-03-31 | 2022-06-07 | 西安西电高压开关有限责任公司 | Column type circuit breaker with high-pressure heating |
| CN114597098B (en) * | 2022-03-31 | 2023-06-13 | 西安西电高压开关有限责任公司 | Column type circuit breaker with high-voltage heating |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20191224 |