WO2014113911A1 - Appareil de prévention contre une liquéfaction d'hexafluorure de soufre gazeux d'équipement électrique à haute tension à hexafluorure de soufre - Google Patents

Appareil de prévention contre une liquéfaction d'hexafluorure de soufre gazeux d'équipement électrique à haute tension à hexafluorure de soufre Download PDF

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Publication number
WO2014113911A1
WO2014113911A1 PCT/CN2013/070822 CN2013070822W WO2014113911A1 WO 2014113911 A1 WO2014113911 A1 WO 2014113911A1 CN 2013070822 W CN2013070822 W CN 2013070822W WO 2014113911 A1 WO2014113911 A1 WO 2014113911A1
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WO
WIPO (PCT)
Prior art keywords
hexafluoride gas
gas
sulphur hexafluoride
voltage electrical
sulfur hexafluoride
Prior art date
Application number
PCT/CN2013/070822
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English (en)
Chinese (zh)
Inventor
金海勇
Original Assignee
Jin Haiyong
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Jin Haiyong filed Critical Jin Haiyong
Priority to PCT/CN2013/070822 priority Critical patent/WO2014113911A1/fr
Priority to PCT/CN2014/070871 priority patent/WO2014114208A1/fr
Publication of WO2014113911A1 publication Critical patent/WO2014113911A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/56—Gas reservoirs
    • H01H33/562—Means for avoiding liquefaction or for disposing of liquefaction products

Definitions

  • the invention relates to a high-voltage electrical device, in particular to a sulphur hexafluoride gas anti-liquefaction device applied to a high-voltage electrical equipment of sulfur hexafluoride.
  • sulfur hexafluoride gas Due to its excellent insulation and arc extinguishing performance, sulfur hexafluoride gas is an ideal dielectric and arc extinguishing medium for high voltage electrical equipment (especially high voltage circuit breakers) and is widely used at home and abroad.
  • the excellent performance of sulfur hexafluoride gas is achieved under a certain density and pressure.
  • the sulphur hexafluoride gas inside the high-voltage electrical equipment will appear liquefied, and its liquefaction temperature is related to density and pressure. The higher the density, the higher the liquefaction temperature.
  • the high-voltage circuit breaker for outdoor use is a large application. It can be used in areas with a latitude higher than 45 degrees. For example, in Xinjiang, Inner Mongolia, Weibei and Northeast China, the winter climate is cold and the outdoor temperature reaches -40 °. C, some areas even reach - 50 °C, sulphur hexafluoride circuit breaker will be liquefied by sulphur hexafluoride gas at this temperature, the gas pressure will drop to the blocking pressure value, and the sulphur hexafluoride circuit breaker will not work properly. Had to quit running, in severe cases, it will cause a large area power outage.
  • the proportion mixing method of the mixed gas needs a reasonable ratio, otherwise the insulating property and the arc extinguishing characteristic of the mixed gas will be seriously weakened, and at the same time, because the two high-pressure gases are mixed together, Once the leak rate is different, the gas supplementation process is very complicated, and the technical requirements of the product are not met, which brings a lot of inconvenience to the use, detection and management of the product, and therefore cannot be promoted.
  • ⁇ reduce the pressure of sulphur hexafluoride to achieve sulphur hexafluoride gas liquefaction point reduction, but due to gas As the body pressure is reduced, the gas density is also reduced, resulting in a decrease in arc extinguishing performance and insulation performance of the high voltage circuit breaker. Directly affecting the breaking current capability of the high-voltage circuit breaker, it can not meet the requirements of users who need normal breaking capacity, and the product use is greatly limited.
  • the high voltage switch manufacturer is currently ⁇ Take the following measures: Install the heater inside or outside the high-voltage circuit breaker sulphur hexafluoride gas, and automatically control it by the intelligent temperature controller. When the ambient temperature drops below a certain temperature, the thermostat turns on the heater. The power supply heats the sulfur hexafluoride gas chamber, so that the sulfur hexafluoride gas chamber temperature is always maintained above a certain temperature.
  • the technology used in the patent ZL200610152005. 1 (CN1925084A) is to provide a heating device at the lower end of the pillar porcelain sleeve of each phase porcelain column of the porcelain column sulphur hexafluoride circuit breaker.
  • the heater is turned on, due to the porcelain column.
  • the gas of the sulphur hexafluoride circuit breaker is sealed in the porcelain column.
  • the porcelain column is a kind of heat insulating material.
  • a large heater is selected, so that the porcelain column hexafluoride sulphur is not broken.
  • the sulphur hexafluoride gas is liquefied, but due to the high temperature at the lower end of the pillar porcelain sleeve, the sealing ring at the lower end of the pillar porcelain sleeve is rapidly aged, and the time is short, and the gas is leaked.
  • X (CN2927307Y) is used in the bottom plate of the high-voltage circuit breaker with heating device, ZL201120025943.
  • the technique of directly heating sulphur hexafluoride gas for high-voltage electrical equipment is simple in principle, but the current technology is difficult to implement because sulphur hexafluoride gas for high-voltage electrical equipment is sealed in high-voltage electrical equipment.
  • the high voltage electrical equipment In the sulphur hexafluoride gas chamber in the body, the high voltage electrical equipment has a high working voltage, and it is generally difficult to directly heat the sulphur hexafluoride gas chamber. In this way, the heating effect is not very satisfactory, or it brings a serious problem similar to the air leakage caused by the rapid aging of the sealing ring.
  • the object of the present invention is to provide a sulfur hexafluoride gas anti-liquefaction device for high-voltage electrical equipment of sulfur hexafluoride, which has six in an extremely cold region.
  • the advantage that fluorinated sulfur gas will not liquefy plays a huge role in ensuring the safe operation of electricity.
  • a sulfur hexafluoride gas anti-liquefaction device for a high-voltage electrical equipment of sulfur hexafluoride, which is connected to a sulfur hexafluoride gas chamber of a high-voltage electrical equipment body, the sulfur hexafluoride
  • the gas anti-liquefaction device comprises a sulfur hexafluoride gas storage tank filled with sulfur hexafluoride gas and a connecting pipe, one end of the connecting pipe is sealingly connected to an air inlet or a dedicated connecting port of the main body of the high voltage electrical device, and the other end is connected at
  • the gas outlet of the sulphur hexafluoride gas storage tank is connected to the sulphur hexafluoride gas chamber in the gas storage tank.
  • the sulphur hexafluoride gas anti-liquefaction device of the sulphur hexafluoride high-voltage electrical device wherein the sulphur hexafluoride gas storage tank is made of steel or a cylinder.
  • the sulphur hexafluoride gas anti-liquefaction device of the sulphur hexafluoride high-voltage electrical device is further provided with a valve on the connecting pipe or the sulphur hexafluoride gas storage tank.
  • the sulphur hexafluoride gas anti-liquefaction device of the sulphur hexafluoride high-voltage electrical device further comprises a heating device for heating the gas storage tank.
  • the sulphur hexafluoride gas anti-liquefaction device of the sulphur hexafluoride high-voltage electrical device wherein the heating device has an inner and outer temperature sensor and a gas density sensor for monitoring temperature and gas density and ambient temperature in the gas storage tank , heating elements and intelligent control elements.
  • the sulphur hexafluoride gas anti-liquefaction device of the sulphur hexafluoride high-voltage electrical device the intelligent control component receiving the inner and outer temperature sensors, the gas density sensor signal and controlling the connection of the heating element and / or valve.
  • the sulphur hexafluoride gas anti-liquefaction device of the sulphur hexafluoride high-voltage electrical device wherein the heating element of the heating device is disposed outside the sulphur hexafluoride gas storage tank, and is provided with a heat insulating layer outside.
  • the sulphur hexafluoride gas anti-liquefaction device of the sulphur hexafluoride high-voltage electrical device wherein the heating element of the heating device is disposed in a sulphur hexafluoride gas storage tank, and the gas storage tank is provided with a heat insulating layer.
  • the sulphur hexafluoride gas anti-liquefaction device of the sulphur hexafluoride high-voltage electrical device further comprises a heating element open circuit alarm circuit.
  • the sulphur hexafluoride gas anti-liquefaction device of the sulphur hexafluoride high-voltage electrical device, the sulphur hexafluoride gas storage tank or the connecting pipe is further provided with a sulphur hexafluoride density relay or a density meter or a pressure switch, The density and pressure of the sulfur hexafluoride gas inside the gas tank are monitored.
  • the innovation of the invention is: adding a sulphur hexafluoride gas liquefaction device to the conventional sulphur hexafluoride high-voltage electrical equipment, preventing the sulphur hexafluoride gas liquefaction device from being provided with a sulphur hexafluoride gas storage tank, and a heating device .
  • the heating device starts to heat the gas storage tank, and the sulfur hexafluoride gas in the gas storage tank is heated, and the temperature thereof will rise, and the hexafluoride in the sulfur hexafluoride gas chamber
  • the sulfur gas will form a convection, and the heat will be directly transferred to the sulfur hexafluoride gas chamber, so that the temperature of the sulfur hexafluoride gas in the sulfur hexafluoride gas chamber is raised to prevent liquefaction or liquefaction, that is, the high pressure is always allowed.
  • the temperature of the sulphur hexafluoride gas in the sulphur hexafluoride gas chamber of the electrical equipment is higher than the liquefaction zero boundary temperature, or the density of the sulphur hexafluoride gas in the sulphur hexafluoride gas chamber in the high-voltage electrical equipment body is high.
  • the alarm value of high-voltage electrical equipment ensures the safe operation of high-voltage electrical equipment of sulfur hexafluoride in cold weather.
  • the sulfur hexafluoride gas storage tank Since the sulphur hexafluoride gas storage tank is connected to the high-voltage electrical equipment through the connecting pipe, the sulfur hexafluoride gas storage tank is welded by the steel, and is connected to the connecting pipe through an elongated connecting joint, all the connections It is far away from the heating element, and the temperature of the sealing ring at the joint is completely within the normal working range, so that the sealing ring will not be aged and gas leakage will not occur.
  • the core innovation of the present invention is to add a sulphur hexafluoride gas liquefaction device to a conventional sulphur hexafluoride high-voltage electrical device, and to hexafluoride through a heating device on a sulphur hexafluoride gas liquefaction device.
  • the sulfur storage tank is heated, and the sulphur hexafluoride gas in the gas storage tank is heated to increase the temperature, and heat convection is formed with the sulfur hexafluoride gas in the sulfur hexafluoride gas chamber, and the heat is directly transferred.
  • the temperature of the sulfur hexafluoride gas in the sulfur hexafluoride gas chamber is increased to prevent the sulphur hexafluoride gas in the sulfur hexafluoride gas chamber of the high-voltage electrical equipment from being liquefied or liquefied.
  • the high-voltage electrical equipment for sulphur hexafluoride includes sulphur hexafluoride high-pressure ceramic column circuit breaker, sulphur hexafluoride high-pressure tank circuit breaker, sulphur hexafluoride GIS, sulphur hexafluoride current transformer, hexafluoride Electrical equipment such as sulfur voltage transformers and sulfur hexafluoride transformers.
  • the sulphur hexafluoride auxiliary gas storage tank can also be welded by other metal materials or sealed by other materials.
  • FIG. 1 is an outline view of a high-voltage electrical equipment for sulfur hexafluoride according to the present invention
  • FIG. 2 is a schematic view showing the structure of a sulphur hexafluoride gas liquefaction apparatus for a sulphur hexafluoride high-voltage electrical apparatus according to the present invention
  • FIG. 3 is a schematic view showing the control of a heating device for preventing sulphur hexafluoride gas liquefaction apparatus of a sulphur hexafluoride high-voltage electrical apparatus according to the present invention
  • Figure 4 is a perspective view showing another high-voltage electrical equipment for sulfur hexafluoride according to the present invention.
  • Figure 5 is a perspective view showing another high-voltage electrical equipment for sulfur hexafluoride according to the present invention.
  • FIG. 6 is a schematic structural view of a sulphur hexafluoride gas liquefaction apparatus of another sulphur hexafluoride high-voltage electrical apparatus of FIG. 5 according to the present invention
  • Figure 7 is a schematic view showing the control of a heating device for preventing sulphur hexafluoride gas liquefaction apparatus of another sulphur hexafluoride high-voltage electrical apparatus of Figure 5;
  • the first sulphur hexafluoride gas anti-liquefaction device of the first sulphur hexafluoride high-voltage electrical equipment of the present invention which is connected to the high-voltage electrical equipment body 1 1 and is disposed in the high-voltage electrical equipment body.
  • the device for preventing liquefaction of sulfur hexafluoride gas comprises a sulfur hexafluoride gas storage tank 1, a connecting pipe 2, a heat insulating layer 4, a casing 5, a valve 6, a joint 7, a heat insulating layer 8, and the like.
  • a heating device 3 can be added, and the heating device 3 is mainly composed of a heating element 31, a switch 32, a controller 33, a device body temperature sensor 34, an ambient temperature sensor 35, an intelligent control element 36, and a gas density sensor. (pressure sensor) 37 and so on.
  • the sulphur hexafluoride gas storage tank 1 is installed beside the high-voltage electrical equipment, and one end of the connection pipe 2 is sealedly connected to the air supply port 9 or the dedicated connection port of the high-voltage electrical equipment body, and the other end is connected to the air outlet of the valve 6, the valve
  • the air inlet of the 6 is connected to the air outlet of the sulfur hexafluoride gas storage tank 1 and installed on the gas storage tank, and the joint 6 is also connected to the sulfur hexafluoride gas storage tank 1 for use as a gas supplement.
  • the heating element 31 can be mounted on the outside of the sulphur hexafluoride gas storage tank 1, and the outer surface of the heating element 31 is provided with a heat insulating layer 4 having a good heat insulating effect.
  • a sulfur hexafluoride gas storage tank 1, a heating element 31, a switch 32, a controller 33, an intelligent control element 36, a density (pressure) sensor 37, a heat insulating layer 4, a valve 6, a joint, and the like are all mounted in the casing 5.
  • the inner temperature sensor 34 is mounted on the sulphur hexafluoride gas storage tank 1, and the outer temperature sensor 35 is mounted outside the casing 5 to measure the outdoor temperature.
  • the sulphur hexafluoride gas source is connected to the joint 7, and the sulphur hexafluoride gas storage tank 1 is evacuated, filled with pure nitrogen gas, and then filled with sulfur hexafluoride gas until the sulfur hexafluoride storage
  • the sulphur hexafluoride gas pressure in the gas cylinder 1 reaches the sulphur hexafluoride high pressure electrical equipment requirement or the specified rated pressure.
  • the valve 6 When the temperature drops very low during the cold season, the valve 6 is opened and the heating device 3 is turned on.
  • the sulfur hexafluoride gas of the sulfur hexafluoride gas storage tank 1 communicates with the sulfur hexafluoride gas of the sulfur hexafluoride gas chamber 12 in the high-voltage electrical equipment body through the air supply port 9.
  • the temperature is detected by the temperature sensor 35.
  • the intelligent control unit 36 activates the controller 33, and the controller 33 turns on the heating element 31, and the heating element 31 stores the sulfur hexafluoride gas.
  • the tank 1 and the internal sulfur hexafluoride gas are heated.
  • the temperature of the sulfur hexafluoride gas inside the sulfur hexafluoride gas storage tank 1 is quickly increased, and the temperature is higher than that of the sulfur hexafluoride gas chamber 12 in the high-voltage electrical equipment body.
  • the temperature of the sulfur hexafluoride gas is such that there is a temperature difference between the two sulfur hexafluoride gases. Because the different temperatures of the two sulphur hexafluoride gases cause a difference in density between the sulphur hexafluoride gas storage tank and the plenum, causing convection.
  • Convective conduction because it involves the dynamic process, is faster than direct conduction, and can quickly transfer heat, with high efficiency and good effect.
  • the sulfur hexafluoride gas of the gas storage tank 1 and the sulfur hexafluoride gas of the sulfur hexafluoride gas chamber 12 are circulated, causing heat convection, and the heat is quickly transmitted directly to the sulfur hexafluoride gas chamber 12, so that six
  • the temperature of the sulphur hexafluoride gas in the fluorinated sulfur gas chamber 12 is increased, and the pressure rises synchronously, thereby preventing liquefaction or liquefaction too much, that is, always letting the sulphur hexafluoride gas chamber 12 of the high-voltage electrical equipment body
  • the temperature of the sulfur fluoride gas is higher than the liquefaction critical temperature, or the density of the sulfur hexafluoride gas of the sulfur hexafluoride gas chamber 12 in the high-voltage electrical equipment body is
  • the intelligent control unit 36 turns off the controller 33, the controller 33 turns off the heating element 31, and the heating element 31 stops to the sulphur hexafluoride gas storage tank 1 and the inside.
  • the sulphur hexafluoride gas is heated to save energy and extend the life of the heating element.
  • the heating device is also provided with a heating element open circuit alarm function, that is, when the heating element is broken due to the service life or damage, the intelligent control element 36 will issue an alarm signal to notify the staff to deal with it in time to ensure Reliable work.
  • the invention can also detect the atmospheric environment temperature, the temperature of the sulfur hexafluoride gas inside the sulfur hexafluoride storage tank 1, and the high pressure by the action of the internal temperature sensor 34, the external temperature sensor 35, the intelligent control element 36, and the pressure sensor 37.
  • the pressure and density of sulfur hexafluoride gas in the sulphur hexafluoride gas chamber 12 in the electrical equipment body, and indirectly the temperature of the sulfur hexafluoride gas chamber 12 and hexafluoride according to the pressure and temperature characteristics of the sulfur hexafluoride gas The operation requirements of the sulfur high-voltage electrical equipment, the intelligent automatic control of the controller 33 and the heating element 31 by the intelligent control component 36, the high temperature of the sulfur hexafluoride gas of the sulfur hexafluoride gas chamber 12 in the high-voltage electrical equipment body is realized. At its liquefaction critical temperature, high-voltage electrical equipment for sulphur hexafluoride is guaranteed to operate safely at extremely cold temperatures while ensuring energy savings.
  • the valve 6 In the non-cold season, the valve 6 is closed, and the sulfur hexafluoride gas of the sulfur hexafluoride gas storage tank 1 is not in communication with the sulfur hexafluoride gas of the sulfur hexafluoride gas chamber 12 in the high-voltage electrical equipment body. At the same time, the switch 32 of the heating device 3 is cut off, so that the heating element 31 does not work. At this time, because of the non-cold season, the sulfur hexafluoride gas in the sulfur hexafluoride high-voltage electrical equipment is not liquefied, and the sulfur hexafluoride high-voltage electrical The device works safely.
  • the sulphur hexafluoride storage tank can be directly connected to the sulphur hexafluoride gas chamber.
  • the sulphur hexafluoride gas liquefaction device can be directly disposed on the body of the sulphur hexafluoride high-pressure electrical equipment, even if the sulphur hexafluoride gas liquefaction device is prevented from being integrated with the sulphur hexafluoride high-voltage electrical equipment.
  • the sulphur hexafluoride gas liquefaction device can be directly disposed on the mechanism box 14 of the sulfur hexafluoride high voltage circuit breaker or on the beam, as shown in FIG.
  • a second embodiment of the sulphur hexafluoride high-voltage electrical apparatus of the present invention includes a high-voltage electrical equipment body 1 1 and a sulfur hexafluoride gas chamber disposed in the high-voltage electrical equipment body. 12.
  • Density relay 1 3. Prevent sulphur hexafluoride gas liquefaction device. Preventing sulphur hexafluoride gas liquefaction device including The sulphur hexafluoride gas storage tank 1, the connecting pipe 2, the heating device 3, the heat insulating layer 4, the casing 5, the valve 61, the valve 62, the joint 7, the heat insulating layer 8, the density relay 10, and the like are composed.
  • the heating device 3 is mainly composed of a heating element 31, a switch 32, an automatic thermostat controller 38, and the like.
  • the sulfur hexafluoride gas of the gas storage tank 1 and the sulfur hexafluoride gas of the sulfur hexafluoride gas chamber 12 are circulated, causing heat convection, and the heat is directly transmitted to the sulfur hexafluoride gas chamber 12 to make the hexafluoride
  • the temperature of the sulfur hexafluoride gas in the sulfur gas chamber 12 is raised, the liquefaction or liquefaction can be prevented from being excessive, that is, the temperature of the sulfur hexafluoride gas in the sulfur hexafluoride gas chamber 12 in the high-voltage electrical equipment body is always high.
  • the automatic thermostat controller 38 turns off the controller 33, the controller 33 turns off the heating element 31, and the heating element 31 stops the sulphur hexafluoride gas storage tank 1 and The internal sulphur hexafluoride gas is heated to save energy and extend the life of the heating element.
  • the heating device is also provided with a heating element open circuit alarm function, that is, when the heating element is broken due to the service life or damage, the automatic thermostat controller 38 will send an alarm signal to notify the staff to deal with it in time. Guarantee reliable work.
  • the present invention employs a liquefaction device for preventing sulfur hexafluoride gas from being installed on a conventional high-voltage electrical equipment for sulfur hexafluoride.
  • the sulphur hexafluoride gas liquefaction device is provided with a sulphur hexafluoride gas storage tank, and a heating device for heating the gas of the sulphur hexafluoride gas storage tank by the heating device to form convection.
  • the heat is quickly transferred to the sulphur hexafluoride gas chamber in the high-voltage electrical equipment to prevent liquefaction or excessive liquefaction of sulphur hexafluoride gas, ensuring reliable operation of high-voltage electrical equipment in cold weather.
  • the core innovation of the present invention is to install a sulphur hexafluoride gas liquefaction device on a conventional high-voltage electrical equipment for sulfur hexafluoride.
  • the sulphur hexafluoride gas storage tank is heated by a heating device on the sulphur hexafluoride gas liquefaction device, and the sulphur hexafluoride gas in the gas storage tank is first heated to raise the temperature thereof, and sulfur hexafluoride gas
  • the sulphur hexafluoride gas in the chamber forms a heat convection, and the heat is directly transferred to the sulphur hexafluoride gas chamber, so that the temperature of the sulphur hexafluoride gas in the sulphur hexafluoride gas chamber is raised to prevent the high voltage electrical equipment from being inside the body.
  • the sulphur hexafluoride gas in the sulphur hexafluoride gas chamber is liquefied or liquefied too much to ensure the safe operation of the sulphur hexafluoride high-voltage electrical equipment in cold weather, and overcomes the prior art heating device directly heating the sulphur hexafluoride gas chamber
  • Many problems (see the background technology for details) have solved the problems that have been existing in the power system for many years: The reliable and safe operation of sulfur hexafluoride high-voltage electrical equipment in cold weather.

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Abstract

La présente invention concerne un appareil de prévention contre une liquéfaction d'hexafluorure de soufre gazeux d'un équipement électrique à haute tension à hexafluorure de soufre gazeux, qui est communique avec une chambre (12) d'hexafluorure de soufre gazeux d'un corps (11) d'équipement électrique à haute tension. Selon l'invention, l'appareil de prévention contre une liquéfaction d'hexafluorure de soufre gazeux comprend une cuve de stockage (1) d'hexafluorure de soufre gazeux qui est remplie d'hexafluorure de soufre gazeux, un appareil chauffant (3) et une conduite de raccordement (2), une extrémité de la conduite de raccordement étant raccordée de façon hermétique à un orifice d'admission de gaz (9) ou à un orifice de raccordement spécial du corps d'équipement électrique à haute tension, et son autre extrémité étant raccordée à une sortie de gaz de la cuve de stockage d'hexafluorure de sulfure gazeux, de façon à permettre la mise en communication l'un avec l'autre de l'intérieur de la cuve de stockage de gaz et de la chambre d'hexafluorure de sulfure gazeux ; et une couche d'isolation thermique (4) disposée à l'extérieur de la cuve de stockage de gaz. L'appareil de prévention contre une liquéfaction de l'hexafluorure de sulfure gazeux peut empêcher la liquéfaction, ou la liquéfaction excessive, de l'hexafluorure de sulfure gazeux, ce qui garantit le fonctionnement sécurisé de l'équipement électrique à haute tension à hexafluorure de sulfure par temps froid.<0}
PCT/CN2013/070822 2013-01-22 2013-01-22 Appareil de prévention contre une liquéfaction d'hexafluorure de soufre gazeux d'équipement électrique à haute tension à hexafluorure de soufre WO2014113911A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2013/070822 WO2014113911A1 (fr) 2013-01-22 2013-01-22 Appareil de prévention contre une liquéfaction d'hexafluorure de soufre gazeux d'équipement électrique à haute tension à hexafluorure de soufre
PCT/CN2014/070871 WO2014114208A1 (fr) 2013-01-22 2014-01-20 Appareil de prévention de la liquéfaction de l'hexafluorure de soufre gazeux d'un dispositif électrique à haute tension à l'hexafluorure de soufre

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PCT/CN2013/070822 WO2014113911A1 (fr) 2013-01-22 2013-01-22 Appareil de prévention contre une liquéfaction d'hexafluorure de soufre gazeux d'équipement électrique à haute tension à hexafluorure de soufre

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PCT/CN2014/070871 WO2014114208A1 (fr) 2013-01-22 2014-01-20 Appareil de prévention de la liquéfaction de l'hexafluorure de soufre gazeux d'un dispositif électrique à haute tension à l'hexafluorure de soufre

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US3806681A (en) * 1971-05-28 1974-04-23 Siemens Ag Compressed gas circuit breaker
CN101276702A (zh) * 2008-04-29 2008-10-01 王世有 具有加热保护装置的六氟化硫断路器
CN102436960A (zh) * 2011-11-15 2012-05-02 北京北开电气股份有限公司 用于低温地区使用的六氟化硫的加温装置
CN203150462U (zh) * 2013-01-22 2013-08-21 金海勇 一种用于寒冷地区的六氟化硫高压电气设备

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CN203150461U (zh) * 2013-01-22 2013-08-21 上海乐研电气科技有限公司 一种用于寒冷地区的六氟化硫高压断路器
CN103107042A (zh) * 2013-01-22 2013-05-15 上海乐研电气科技有限公司 一种用于寒冷地区的六氟化硫高压断路器
CN103065863A (zh) * 2013-01-22 2013-04-24 上海乐研电气科技有限公司 一种免加热的用于寒冷地区的六氟化硫高压电气设备
CN203150463U (zh) * 2013-01-22 2013-08-21 上海乐研电气科技有限公司 一种用于寒冷地区的六氟化硫高压电气设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3806681A (en) * 1971-05-28 1974-04-23 Siemens Ag Compressed gas circuit breaker
CN101276702A (zh) * 2008-04-29 2008-10-01 王世有 具有加热保护装置的六氟化硫断路器
CN102436960A (zh) * 2011-11-15 2012-05-02 北京北开电气股份有限公司 用于低温地区使用的六氟化硫的加温装置
CN203150462U (zh) * 2013-01-22 2013-08-21 金海勇 一种用于寒冷地区的六氟化硫高压电气设备

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