CN104779548A - Enclosed switchgear provided with liquid nitrogen cooling circulation system - Google Patents
Enclosed switchgear provided with liquid nitrogen cooling circulation system Download PDFInfo
- Publication number
- CN104779548A CN104779548A CN201510164304.6A CN201510164304A CN104779548A CN 104779548 A CN104779548 A CN 104779548A CN 201510164304 A CN201510164304 A CN 201510164304A CN 104779548 A CN104779548 A CN 104779548A
- Authority
- CN
- China
- Prior art keywords
- liquid nitrogen
- vacuum interrupter
- circuit breaker
- circulatory system
- dewar
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/56—Cooling; Ventilation
Abstract
Enclosed switchgear provided with a liquid nitrogen cooling circulation system comprises a vacuum interrupter, electrodes connected to two ends of the vacuum interrupter as well as a liquid nitrogen circulation system communicated with a circuit breaker Dewar flask, wherein a current transformer is arranged on a connecting line of the vacuum interrupter and the electrodes; a spring control mechanism is connected with the vacuum interrupter and drives the vacuum interrupter to move; the vacuum interrupter is placed in the circuit breaker Dewar flask filled with liquid nitrogen having an external insulation effect on the vacuum interrupter. The liquid nitrogen is used for insulation, pollution caused by SF6 gas to the environment is avoided, the characteristic of high insulation strength of the liquid nitrogen is used, the size of the switchgear is reduced, the liquid nitrogen circulation system is used for circularly cooling the liquid nitrogen, and normal operation of the switchgear is guaranteed.
Description
Technical field
The present invention relates to switching technique field, be specifically related to a kind of sealing switch equipment with the cooled with liquid nitrogen circulatory system.
Background technology
In unit switch equipment, widely use Cubicle Gas-Insulated Switchgear (GIS).Its objective is and improve unit switch insulation property, reduce unit switch volume.
Cubicle Gas-Insulated Switchgear adopts SF6 gas as insulating gas usually.But SF6 has greenhouse effect, and analyte is poisonous, along with leakage or outside moisture enter the generation that can cause internal flashover.And such as extremely frigid zones at low ambient temperatures, superconductor applications occasion can liquefy due to SF6, causes failure of insulation.
There is dielectric strength lower than SF6, the shortcoming that condensing temperature is low in the common alternative gas of current SF6, all can not substitute SF6 gas.
Summary of the invention
In order to solve above-mentioned prior art Problems existing, the object of the present invention is to provide a kind of sealing switch equipment with the cooled with liquid nitrogen circulatory system, utilize liquid nitrogen as dielectric, solve the environmental pollution of SF6 insulating gas, gas liquefaction causes the problem of failure of insulation; There is high insulation resistance simultaneously, reduce equipment volume.
To achieve these goals, the technical scheme that the present invention takes is:
A kind of sealing switch equipment with the cooled with liquid nitrogen circulatory system, comprise vacuum interrupter 5, be connected to the electrode 1 at vacuum interrupter 5 two ends, the line of vacuum interrupter 5 and electrode 1 is provided with current transformer 4, spring operation 2 is connected with vacuum interrupter 5, drives it to move; Described vacuum interrupter 5 is placed in circuit breaker Dewar tank 3, is full of liquid nitrogen vacuum interrupter 5 being played to external insulation effect in circuit breaker Dewar tank 3, also comprises the liquid nitrogen circulatory system be communicated with circuit breaker Dewar tank 3.
The described liquid nitrogen circulatory system comprises ice chest 7 and the liquid nitrogen storage tank 10 excessively that are communicated with circuit breaker Dewar tank 3 by pipeline, the pipeline that ice chest 7 is communicated with liquid nitrogen storage tank 10 is excessively provided with liquid nitrogen pump 9, described mistake in ice chest 7 is placed with coil exchanger, and coil exchanger is connected with refrigeration machine 8.
Described circuit breaker Dewar tank 3 adopts Dewar shell.
Existing similar patent has: high-efficient electromagnetic switch shell application number: 201210249875.6 differences are that this patent uses liquid nitrogen to be in outer wall, and directly do not contact with switch, liquid nitrogen is only as heat dissipation vehicle, and object just improves radiating effect.And vacuum interrupter is immersed among liquid nitrogen by the application, there is the high feature of cooled with liquid nitrogen circulatory system intensity as external insulation medium, but not heat dissipation vehicle.Compared to the prior art, tool has the following advantages in the present invention:
1, adopt liquid nitrogen as the external insulation of vacuum interrupter, can use at low temperatures.
2, adopt liquid nitrogen as the external insulation of vacuum interrupter, avoid greenhouse effect and the environmental pollution of SF6 gas.
3, make use of the feature of liquid nitrogen high insulation resistance, reduce the size of switchgear.
4, utilize the cooled with liquid nitrogen circulatory system, circulating cooling liquid nitrogen, maintenance equipment normally works for a long time.
Accompanying drawing explanation
Accompanying drawing is structural representation of the present invention.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
As shown in drawings, a kind of sealing switch equipment with the cooled with liquid nitrogen circulatory system of the present invention, comprises vacuum interrupter 5, is connected to the electrode 1 at vacuum interrupter 5 two ends, and vacuum interrupter 5 is connected with electrical network by electrode 1.The line of vacuum interrupter 5 and electrode 1 is provided with current transformer 4, and current transformer 4 plays the detection function of current; Spring operation 2 is arranged on base 6 side and is connected with vacuum interrupter 5, drives vacuum interrupter 5 to move; Described vacuum interrupter 5 is placed in circuit breaker Dewar tank 3, and circuit breaker Dewar tank 3 is placed on base 6, is full of liquid nitrogen vacuum interrupter 5 being played to external insulation effect in circuit breaker Dewar tank 3, also comprises the liquid nitrogen circulatory system be communicated with circuit breaker Dewar tank 3.The described liquid nitrogen circulatory system comprises ice chest 7 and the liquid nitrogen storage tank 10 excessively that are communicated with circuit breaker Dewar tank 3 by pipeline, and the pipeline that ice chest 7 is communicated with liquid nitrogen storage tank 10 is excessively provided with liquid nitrogen pump 9, and liquid nitrogen pump 9 provides liquid nitrogen to circulate institute's energy requirement; Described mistake in ice chest 7 is placed with coil exchanger, and coil exchanger is connected with refrigeration machine 8.Refrigeration machine 8 will be taken away heat and temperature is reduced from liquid nitrogen.
As the preferred embodiment of the present invention, described circuit breaker Dewar tank 3 adopts Dewar shell, effectively can reduce the thermal losses of liquid nitrogen, reduces the consumption of liquid nitrogen.
Operation principle of the present invention is: liquid nitrogen absorbs heat and temperature is raised when flowing through switch.When liquid nitrogen by have refrigeration machine 8 cross ice chest 7 time, refrigeration machine 8 will be taken away heat and temperature is reduced from liquid nitrogen.Liquid nitrogen pump 9 provides required kinetic energy, guarantees the reliable cycle of liquid nitrogen.
The present invention utilizes liquid nitrogen to have very high insulation resistance, and free of contamination characteristic is as switchgear external insulation.Sealing switch equipment can be used at low temperatures, and avoid SF6 gaseous contamination.Utilize the cooled with liquid nitrogen circulatory system simultaneously, ensure the continuous circulation of liquid nitrogen, guarantee that the switchgear be immersed in liquid nitrogen has reliable and stable external insulation.
Claims (3)
1. one kind has the sealing switch equipment of the cooled with liquid nitrogen circulatory system, comprise vacuum interrupter (5), be connected to the electrode (1) at vacuum interrupter (5) two ends, the line of vacuum interrupter (5) and electrode (1) is provided with current transformer (4), spring operation (2) is connected with vacuum interrupter (5), drives it to move; It is characterized in that: described vacuum interrupter (5) is placed in circuit breaker Dewar tank (3), be full of liquid nitrogen vacuum interrupter (5) being played to external insulation effect in circuit breaker Dewar tank (3), also comprise the liquid nitrogen circulatory system be communicated with circuit breaker Dewar tank (3).
2. a kind of sealing switch equipment with the cooled with liquid nitrogen circulatory system according to claim 1, it is characterized in that: the described liquid nitrogen circulatory system comprises ice chest (7) and the liquid nitrogen storage tank (10) excessively that are communicated with circuit breaker Dewar tank (3) by pipeline, the pipeline that ice chest (7) is communicated with liquid nitrogen storage tank (10) is excessively provided with liquid nitrogen pump (9), described mistake in ice chest (7) is placed with coil exchanger, and coil exchanger is connected with refrigeration machine (8).
3. a kind of sealing switch equipment with the cooled with liquid nitrogen circulatory system according to claim 1, is characterized in that: described circuit breaker Dewar tank (3) adopts Dewar shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510164304.6A CN104779548B (en) | 2015-04-08 | 2015-04-08 | A kind of sealing switch equipment with liquid nitrogen cooling recirculation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510164304.6A CN104779548B (en) | 2015-04-08 | 2015-04-08 | A kind of sealing switch equipment with liquid nitrogen cooling recirculation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104779548A true CN104779548A (en) | 2015-07-15 |
| CN104779548B CN104779548B (en) | 2017-04-05 |
Family
ID=53620861
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510164304.6A Active CN104779548B (en) | 2015-04-08 | 2015-04-08 | A kind of sealing switch equipment with liquid nitrogen cooling recirculation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104779548B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108922822A (en) * | 2018-06-21 | 2018-11-30 | 浙江城电电气有限公司 | Vacuum circuit breaker |
| CN110086111A (en) * | 2019-04-17 | 2019-08-02 | 西安交通大学 | A kind of liquid nitrogen switch and its working method |
| CN110098085A (en) * | 2019-04-17 | 2019-08-06 | 西安交通大学 | Superconducting current-limiting liquid nitrogen switch combined electrical appliance and its working method |
| US11372178B2 (en) | 2015-09-10 | 2022-06-28 | Samtec, Inc. | Rack-mountable equipment with a high-heat-dissipation module, and transceiver receptacle with increased cooling |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4994932A (en) * | 1987-11-09 | 1991-02-19 | Kabushiki Kaisha Toshiba | Superconducting current limiting apparatus |
| CN101099247A (en) * | 2005-01-12 | 2008-01-02 | 住友电气工业株式会社 | Low temperature container of superconducting apparatus |
| CN101640121A (en) * | 2009-07-24 | 2010-02-03 | 国网电力科学研究院武汉南瑞有限责任公司 | Tightly coupling hollow high-temperature superconducting inductor |
| CN103578857A (en) * | 2012-07-19 | 2014-02-12 | 常州市宇征车辆电器有限公司 | High efficiency electromagnetic switch housing |
-
2015
- 2015-04-08 CN CN201510164304.6A patent/CN104779548B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4994932A (en) * | 1987-11-09 | 1991-02-19 | Kabushiki Kaisha Toshiba | Superconducting current limiting apparatus |
| CN101099247A (en) * | 2005-01-12 | 2008-01-02 | 住友电气工业株式会社 | Low temperature container of superconducting apparatus |
| CN101640121A (en) * | 2009-07-24 | 2010-02-03 | 国网电力科学研究院武汉南瑞有限责任公司 | Tightly coupling hollow high-temperature superconducting inductor |
| CN103578857A (en) * | 2012-07-19 | 2014-02-12 | 常州市宇征车辆电器有限公司 | High efficiency electromagnetic switch housing |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11372178B2 (en) | 2015-09-10 | 2022-06-28 | Samtec, Inc. | Rack-mountable equipment with a high-heat-dissipation module, and transceiver receptacle with increased cooling |
| US11828908B2 (en) | 2015-09-10 | 2023-11-28 | Samtec, Inc. | Rack-mountable equipment with a high-heat-dissipation module, and transceiver receptacle with increased cooling |
| CN108922822A (en) * | 2018-06-21 | 2018-11-30 | 浙江城电电气有限公司 | Vacuum circuit breaker |
| CN110086111A (en) * | 2019-04-17 | 2019-08-02 | 西安交通大学 | A kind of liquid nitrogen switch and its working method |
| CN110098085A (en) * | 2019-04-17 | 2019-08-06 | 西安交通大学 | Superconducting current-limiting liquid nitrogen switch combined electrical appliance and its working method |
| CN110098085B (en) * | 2019-04-17 | 2020-05-15 | 西安交通大学 | Superconducting current-limiting liquid nitrogen switch combined electrical apparatus and working method thereof |
| CN110086111B (en) * | 2019-04-17 | 2020-06-16 | 西安交通大学 | Liquid nitrogen switch and working method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104779548B (en) | 2017-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103390485B (en) | A kind of strong cold transformer of liquid nitrogen and refrigerating method thereof | |
| CN104779548A (en) | Enclosed switchgear provided with liquid nitrogen cooling circulation system | |
| RU2650183C2 (en) | Cooling apparatus for an electrical or electronic device, and electrical or electronic device, in particular a circuit breaker, comprising such cooling apparatus | |
| CN107430925B (en) | Fluid-insulated electrical apparatus and cooling method thereof | |
| EP4231413A3 (en) | Organic heat transfer system, method and fluid | |
| CN102299022B (en) | Mechanical heat switch for refrigerating machine to directly cool superconducting magnet | |
| RU2006143759A (en) | SUPERCONDUCTING CABLE LINE | |
| CN102656654A (en) | Device for cooling a medium-voltage apparatus using heat pipes under voltage | |
| CN103456455A (en) | Superconducting magnet current lead | |
| US20180315530A1 (en) | Method and apparatus for cooling a superconducting device immersed in liquid nitrogen | |
| JP2013508907A (en) | Method for cooling medium voltage electrical installations with integrated heat pipe, and system using this method | |
| CN107134767B (en) | A kind of high-voltage large current contact conductor applied under big temperature gradient conditions | |
| GB2476716B (en) | A cryogenically cooled current lead assembly for a superconducting magnet and its method of use | |
| EP2980805B1 (en) | Cooling device for superconductive cable | |
| CN204289233U (en) | High-pressure vacuum breaker | |
| CN203377060U (en) | Liquid nitrogen severe-cold transformer | |
| CN217110640U (en) | Ultra-low temperature differential shrinkage thermal switch | |
| CN100545963C (en) | Evaporative cooling traction transformer | |
| RU203974U1 (en) | SEALED CASE OF A HIGH VOLTAGE DEVICE OPERATING IN A LIQUID DIELECTRIC MEDIUM | |
| CN210297250U (en) | Liquid nitrogen superconducting current limiter | |
| CN211697982U (en) | Circuit breaker loop resistance testing tool | |
| CN105811276A (en) | Insulating gas protection electric control cabinet | |
| CN109449044B (en) | Circuit breaker for high-voltage switch cabinet and high-voltage switch cabinet | |
| CN202042317U (en) | Sf6 gas transformer | |
| CN207234190U (en) | Vacuum high-voltage switch cabinet |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |