CN112885635B - Indoor high-voltage grounding switch - Google Patents
Indoor high-voltage grounding switch Download PDFInfo
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- CN112885635B CN112885635B CN202110038935.9A CN202110038935A CN112885635B CN 112885635 B CN112885635 B CN 112885635B CN 202110038935 A CN202110038935 A CN 202110038935A CN 112885635 B CN112885635 B CN 112885635B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/003—Earthing switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
- H01H31/02—Details
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Abstract
The invention belongs to the technical field related to grounding switches, in particular to an indoor high-voltage grounding switch, which comprises a switching mechanism, wherein a protection mechanism is arranged on the switching mechanism, a fixing mechanism is arranged on one side, far away from the switching mechanism, of the protection mechanism, and a heat dissipation and dust prevention mechanism is arranged at one end of the protection mechanism; the indoor high-voltage grounding switch has the advantages of being capable of providing a reliable protection structure, being convenient to install, detach and repair, saving trouble and saving labor, improving the shock absorption performance of the structure, preventing dust accumulation, improving the heat dissipation effect of the structure and the like.
Description
Technical Field
The invention relates to the technical field related to grounding switches, in particular to an indoor high-voltage grounding switch.
Background
Briefly, a grounding switch, a mechanical switch for a circuit grounding portion, belongs to the class of disconnectors, which is capable of carrying current under abnormal conditions (e.g. short-circuit current) for a certain period of time, but which is not required to carry current under normal circuit conditions, may have a short-circuit on capacity. The method comprises the following three operations:
1. the portable ground wire is replaced, and equipment is grounded when high-voltage equipment and lines are overhauled, so that personal safety is protected;
2. the artificial grounding is caused, so that the protection requirement is met;
3. the grounding switch is arranged beside the isolating switches at two sides of the circuit breaker, and plays a role in grounding the two sides of the circuit breaker during overhauling.
However, the existing indoor high-voltage grounding switch has some disadvantages in the use process, such as the following:
1. when the device is installed and disassembled, the device is fixed by screw, the installation, disassembly and maintenance operations are labor-consuming and inconvenient to operate, reliable safety protection cannot be provided, the shock absorption performance is poor, and the device is inconvenient to use;
2. when the heat dissipation device is used, the structural parts are exposed in the indoor environment, dust is easily accumulated, normal use of the structure is affected, meanwhile, the heat dissipation effect is poor, heat is easily accumulated, and the heat dissipation device is unsafe and unreliable.
For this purpose we propose an indoor high voltage grounding switch to solve the above problems.
Disclosure of Invention
Based on the defects in the use process of the device, such as the mounting and dismounting processes, the mounting and dismounting maintenance operations are mostly fixed by screw fixation, the operation is inconvenient, the reliable safety protection cannot be provided, the damping performance is poor, the device is inconvenient to use, when the device is used, the structural parts are exposed in the indoor environment, dust is easily accumulated, the normal use of the structure is influenced, meanwhile, the heat dissipation effect is poor, the heat is easily accumulated, and the technical problems of safety and reliability are solved.
The invention provides an indoor high-voltage grounding switch which comprises a switch mechanism, wherein a protection mechanism is arranged on the switch mechanism, a fixing mechanism is arranged on one side, far away from the switch mechanism, of the protection mechanism, and a heat dissipation and dust prevention mechanism is arranged at one end of the protection mechanism; the protection mechanism comprises a protection shell, a sealing cover, a baffle, vent holes, a loop bar spring, a magnet block and a sealing gasket, wherein the sealing cover is installed on one side of the protection shell, the baffle is installed at one end of the protection shell, the vent holes are uniformly formed in the baffle, the loop bar spring is installed on the protection shell, the magnet block is installed on the sealing cover, and the sealing gasket is installed on one side, close to the magnet block, of the sealing cover.
Preferably, the seal cover is provided with a groove, the magnet block is arranged on the protective shell, the seal cover is detachably connected with the protective shell through the magnet block, the protective shell is provided with a mouth, the protective shell is provided with a groove, and the protective shell is in sliding connection with the loop bar spring.
Preferably, the fixing mechanism comprises a supporting block, a fixing hole, a limiting block, a connecting slot and a connecting plug, wherein the fixing Kong Kaishe is arranged on the supporting block, the limiting block is arranged on one side of the supporting block, the connecting slot is formed in the position, on one side of the limiting block, of the supporting block, and the connecting plug is detachably connected with the connecting slot.
Preferably, the connecting plugs are mounted on one side of the protective shell, the number of the connecting plugs is the same as that of the connecting slots, and radians are arranged on the supporting blocks.
Preferably, the heat dissipation dustproof mechanism comprises a supporting plate, a fan, a protective net, a filter layer, a protective cover and an illumination mechanism, wherein the fan is installed on the supporting plate, the protective net is installed on one side of the supporting plate, the protective cover is installed on one side, away from the protective net, of the supporting plate, and the filter layer is installed on one side, close to the protective net, of the fan.
Preferably, the support plate is mounted at one end of the protective housing far away from the baffle plate, the support plate is hollow, and the illumination mechanism is uniformly mounted at the inner side of the protective housing.
Preferably, the switch mechanism comprises a spiral energy storage spring, a sensor, a contact spring, a mounting underframe and a connector, wherein the spiral energy storage spring is mounted on one side of the mounting underframe, the sensor is mounted on the mounting underframe, the contact spring is mounted on one side of the mounting underframe located on the sensor, and the connector is mounted on one side of the mounting underframe located on the sensor.
Preferably, the installation chassis is fixedly connected with the loop bar spring, a bus copper pipe is installed on the installation chassis, and the installation chassis is in sliding connection with the protective shell through the loop bar spring.
The beneficial effects of the invention are as follows:
1. the invention can provide a reliable protection structure through arranging the protection mechanism and the fixing mechanism, is convenient for mounting, dismounting and repairing operations, saves trouble and labor, increases the shock absorption performance of the structure, ensures normal operation of the switch, ensures that the protection shell protects the switch mechanism by arranging the loop bar spring between the mounting underframe and the protection shell, simultaneously provides a reliable shock absorption buffer structure, ensures normal and efficient operation of the switch mechanism, simultaneously cooperates with the magnet block, facilitates disassembly of the sealing cover, is convenient for use, simultaneously cooperates with the sealing gasket, increases the tightness of the structure, prevents dust from accumulating in the structure, simultaneously inserts into the connecting slot through the connecting plug, fixes the protection shell through the limiting block, fixes the switch mechanism in the protection mechanism through the fixing hole, and has simple and convenient operation, labor saving and convenient use.
2. According to the invention, the heat dissipation dustproof mechanism and the protection mechanism are arranged, so that dust accumulation can be prevented, the heat dissipation effect of the structure is improved, heat accumulation is prevented, normal operation of structural components is ensured, the safety and reliability are ensured, an external power supply is inserted into the connecting slot through the connecting plug, the external power supply supplies power to the fan of the lighting mechanism through the fixing mechanism, the fan blows air to the switch mechanism in the protection shell, the protection is provided for the fan by matching with the protection cover, the air is filtered through the filter layer, the filtered air enters the protection shell through the protection net, heat dissipation and dust removal are performed on the switch mechanism, circulation is formed, normal operation of the switch is ensured, dust and heat accumulation is prevented, the operation is simple, the safety and reliability are realized, and the use is convenient.
None of the parts of the device are the same as or can be implemented using prior art.
Drawings
Fig. 1 is a schematic structural diagram of an indoor high-voltage grounding switch according to the present invention;
FIG. 2 is a schematic side view of a fixing mechanism and a protection mechanism of an indoor high-voltage grounding switch according to the present invention;
FIG. 3 is a schematic view of a partial cross-sectional structure of a fixing mechanism and a protection mechanism of an indoor high-voltage grounding switch according to the present invention;
FIG. 4 is a schematic view of a partial cross-sectional structure of a protection mechanism of an indoor high-voltage grounding switch according to the present invention;
fig. 5 is a schematic cross-sectional view of a heat dissipation and dust prevention mechanism of an indoor high-voltage grounding switch according to the present invention.
In the figure: 1. a switching mechanism; 101. a spiral energy storage spring; 102. a sensor; 103. a contact spring; 104. installing an underframe; 105. a connector; 2. a protective mechanism; 201. a protective housing; 202. a sealing cover; 203. a baffle; 204. a vent hole; 205. a loop bar spring; 206. a magnet block; 207. a sealing gasket; 3. a fixing mechanism; 301. a support block; 302. a fixing hole; 303. a limiting block; 304. a connection slot; 305. a connection plug; 4. a heat radiation dustproof mechanism; 401. a support plate; 402. a fan; 403. a protective net; 404. a filter layer; 405. a protective cover; 406. an illumination mechanism.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Referring to fig. 1 to 5, an indoor high voltage grounding switch comprises a switch mechanism 1, a spiral energy storage spring 101, a sensor 102, a contact spring 103, a mounting underframe 104, a connector 105, a protection mechanism 2, a protection shell 201, a sealing cover 202, a baffle 203, a vent 204, a sleeve spring 205, a magnet block 206, a sealing gasket 207, a fixing mechanism 3, a supporting block 301, a fixing hole 302, a limiting block 303, a connecting slot 304, a connecting plug 305, a heat dissipation dustproof mechanism 4, a supporting plate 401, a fan 402, a protection net 403, a filter layer 404, a protection cover 405 and a lighting mechanism 406.
In the invention, as shown in fig. 1 and 2 and fig. 3 and 4 and 5, the device comprises a switch mechanism 1, wherein a protection mechanism 2 is arranged on the switch mechanism 1, a fixing mechanism 3 is arranged on one side of the protection mechanism 2 away from the switch mechanism 1, and a heat dissipation and dust prevention mechanism 4 is arranged at one end of the protection mechanism 2; the protection mechanism 2 comprises a protection shell 201, a sealing cover 202, a baffle 203, an air vent 204, a sleeve rod spring 205, a magnet block 206 and a sealing gasket 207, wherein the sealing cover 202 is arranged on one side of the protection shell 201, the baffle 203 is arranged at one end of the protection shell 201, the air vent 204 is uniformly arranged on the baffle 203, the sleeve rod spring 205 is arranged on the protection shell 201, the magnet block 206 is arranged on the sealing cover 202, the sealing gasket 207 is arranged on one side, close to the magnet block 206, of the sealing cover 202, the sealing cover 202 is made of organic glass, the inner structural component is conveniently checked, the sealing cover 202 is removed from the protection shell 201 through a groove on the sealing cover 202, the maintenance operation of the switch mechanism 1 in the protection shell 201 is conveniently carried out, meanwhile, the sealing cover 202 is conveniently fixed on the protection shell 201, the sealing gasket 207 made of rubber is matched, the protection shell 201 and the sealing cover 202 are more tightly matched with the baffle 203, the switch mechanism 1 in the protection shell 201 is protected, the air vent 204 is conveniently matched, the inside the protection shell 201 is conveniently supported by the sleeve rod spring, and the switch mechanism 201 is conveniently carried out in the damping and the protection mechanism.
In the present invention, as shown in fig. 2, 3 and 4, the seal cover 202 is provided with a groove, the magnet block 206 is mounted on the protective housing 201, the seal cover 202 is detachably connected with the protective housing 201 through the magnet block 206, the protective housing 201 is provided with a port, the protective housing 201 is provided with a groove, and the protective housing 201 is slidably connected with the loop bar spring 205, so that the structural connection is more compact and firm, and a reliable structural foundation is provided for shock absorption.
In the present invention, as shown in fig. 1, 2 and 3, the fixing mechanism 3 includes a supporting block 301, a fixing hole 302, a limiting block 303, a connection slot 304 and a connection plug 305, the fixing hole 302 is formed in the supporting block 301, the limiting block 303 is installed on one side of the supporting block 301, the connection slot 304 is formed in one side of the supporting block 301 located on the limiting block 303, the connection plug 305 is detachably connected with the connection slot 304, the supporting block 301 is fixed in an operation area through the fixing hole 302, and an external power source is connected through a plug on the supporting block 301, so that the protective casing 201 is inserted into the connection slot 304 through the connection plug 305, and the protective casing 201 is fixed together with the limiting block 303.
In the present invention, as shown in fig. 2 and 3, the connection plugs 305 are installed on one side of the protection housing 201, the number of the connection plugs 305 is the same as the number of the connection slots 304, and the supporting blocks 301 are provided with radians, so that the protection housing 201 is fixed more firmly and stably, and the connection between the protection housing 201 and the supporting blocks 301 is tighter.
In the invention, as shown in fig. 1, 2 and 5, the heat dissipation and dust prevention mechanism 4 comprises a supporting plate 401, a fan 402, a protective net 403, a filter layer 404, a protective cover 405 and an illumination mechanism 406, wherein the fan 402 is installed on the supporting plate 401, the protective net 403 is installed on one side of the supporting plate 401, the protective cover 405 is installed on one side of the supporting plate 401 far away from the protective net 403, the filter layer 404 is installed on one side of the fan 402 near the protective net 403, an external power supply supplies power to the fan 402 and the illumination mechanism 406 through the fixing mechanism 3, reliable illumination light is provided for maintenance and disassembly operations, the fan 402 is installed on the protective housing 201 in cooperation with the supporting plate 401, the fan 402 starts to work, air is blown to the switch mechanism 1 in the protective housing 201, holes are uniformly formed in cooperation with the protective cover 405, air is enabled to flow simultaneously, then the filter layer 404 is matched, the filtered air enters the inside the protective housing 201 through the protective net 403, the switch mechanism 1 is enabled to dissipate heat, and the heat is enabled to flow through the vent hole 203 on the switch mechanism, the switch mechanism is enabled to be formed, normal operation is guaranteed, and the heat is easy to be accumulated and convenient to use, and the safety is guaranteed.
In the invention, as shown in fig. 1, 2 and 5, the supporting plate 401 is mounted at one end of the protective housing 201 far away from the baffle 203, the interior of the supporting plate 401 is hollow, and the illumination mechanism 406 is uniformly mounted inside the protective housing 201, so that the installation and the disassembly are convenient, and the maintenance work is convenient.
In the invention, as shown in fig. 1, the switch mechanism 1 comprises a spiral energy storage spring 101, a sensor 102, a contact spring 103, a mounting underframe 104 and a connector 105, wherein the spiral energy storage spring 101 is mounted on one side of the mounting underframe 104, the sensor 102 is mounted on the mounting underframe 104, the contact spring 103 is mounted on one side of the mounting underframe 104 positioned on the sensor 102, the connector 105 is mounted on one side of the mounting underframe 104 positioned on the sensor 102, and an indoor high-voltage grounding switch is formed by the spiral energy storage spring 101, the sensor 102, the contact spring 103, the mounting underframe 104 and the connector 105. The grounding knife on the grounding knife component is firmly and reliably contacted with the flange part of the fixed contact through the disc spring; when the brake is opened, the acting moment enables the main shaft to overcome the main moment and the spring force, drives the crank arm to rotate along the brake opening direction, enables the grounding knife spiral energy storage spring 101 to pass through the dead point, and enables the energy storage of the spiral energy storage spring 101 to be finished for the next brake closing.
In the invention, as shown in fig. 1, the installation underframe 104 is fixedly connected with the loop bar spring 205, a bus copper pipe is installed on the installation underframe 104, the installation underframe 104 is slidably connected with the protective shell 201 through the loop bar spring 205, and the type of the switch mechanism 1 is any one of JN15-12, JN15-31.5 or JN15-40, so that the switch mechanism 1 works stably and reliably and is convenient to use.
In the use process of the invention, the supporting block 301 is fixed in the operation area through the fixing hole 302, the external power supply is connected through the plug on the supporting block 301, the protective shell 201 is inserted into the connecting slot 304 through the connecting plug 305, the limiting block 303 is matched, the protective shell 201 is fixed, the sealing cover 202 is removed from the protective shell 201 through the groove on the sealing cover 202, the maintenance operation of the switch mechanism 1 in the protective shell 201 is convenient, meanwhile, the sealing cover 202 is conveniently fixed on the protective shell 201 through the matching of the magnet block 206, the sealing gasket 207 made of rubber material is matched, the protective shell 201 and the sealing cover 202 are more tightly connected, the switch mechanism 1 in the protective shell 201 is protected through the matching of the vent hole 204, the air circulation in the protective shell 201 is convenient, the switch mechanism 1 is supported through the sleeve rod spring 205, the inside of the protective shell 201 is provided with a damping buffer structure, which is safe and reliable and convenient to operate, an external power supply supplies power to the fan 402 and the lighting mechanism 406 through the fixing mechanism 3, reliable lighting light is provided for maintenance and disassembly operations, the fan 402 is arranged on the protective shell 201 to start working, air is blown to the switch mechanism 1 in the protective shell 201, holes are uniformly formed on the protective shell 405 to provide protection for the fan 402 and simultaneously enable air to flow, the filter layer 404 is matched for filtering the air, the filtered air enters the protective shell 201 through the protective net 403, heat and dust are removed on the switch mechanism 1, the air holes 204 on the baffle 203 are used for flowing to the outside to form circulation, the normal working of the switch mechanism 1 is ensured, dust and heat accumulation are prevented, the operation is simple, safe and reliable, and meanwhile, JN15-12, JN15-31.5 or any one of JN15-40 is formed by the spiral energy storage spring 101, the sensor 102, the contact spring 103, the installation underframe 104 and the connector 105, so that the service efficiency of the switch mechanism 1 is improved, when the operating mechanism is operated to enable the grounding switch to be switched on, the main shaft overcomes the resistance moment as the moment, the crank arm is driven to rotate along the switching-on direction, the operating lever on the grounding knife is enabled to pass through the dead point of the spiral energy storage spring 101, the spiral energy storage spring 101 releases energy, the grounding switch is enabled to be switched on rapidly, and the grounding switch is switched on at the switching-on position. The grounding knife on the grounding knife component is firmly and reliably contacted with the flange part of the fixed contact through the disc spring; when the brake is opened, the acting moment enables the main shaft to overcome the main moment and the spring force, drives the crank arm to rotate along the brake opening direction, enables the grounding knife spiral energy storage spring 101 to pass through the dead point, and enables the energy storage of the spiral energy storage spring 101 to be finished for the next brake closing.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (4)
1. An indoor high voltage grounding switch, includes switch gear (1), its characterized in that: the switch mechanism (1) is provided with a protection mechanism (2), one side, far away from the switch mechanism (1), of the protection mechanism (2) is provided with a fixing mechanism (3), and one end of the protection mechanism (2) is provided with a heat dissipation dustproof mechanism (4);
the protection mechanism (2) comprises a protection shell (201), a sealing cover (202), a baffle (203), an air vent (204), a sleeve rod spring (205), a magnet block (206) and a sealing gasket (207), wherein the sealing cover (202) is installed on one side of the protection shell (201), the baffle (203) is installed on one end of the protection shell (201), the air vent (204) is uniformly formed on the baffle (203), the sleeve rod spring (205) is installed on the protection shell (201), the magnet block (206) is installed on the sealing cover (202), and the sealing gasket (207) is installed on one side, close to the magnet block (206), of the sealing cover (202);
the fixing mechanism (3) comprises a supporting block (301), a fixing hole (302), a limiting block (303), a connecting slot (304) and a connecting plug (305), wherein the fixing hole (302) is formed in the supporting block (301), the limiting block (303) is installed on one side of the supporting block (301), the connecting slot (304) is formed in one side of the supporting block (301) located on the limiting block (303), and the connecting plug (305) is detachably connected with the connecting slot (304); the heat dissipation dustproof mechanism (4) comprises a supporting plate (401), a fan (402), a protective net (403), a filter layer (404), a protective cover (405) and a lighting mechanism (406), wherein the fan (402) is installed on the supporting plate (401), the protective net (403) is installed on one side of the supporting plate (401), the protective cover (405) is installed on one side, far away from the protective net (403), of the supporting plate (401), and the filter layer (404) is installed on one side, close to the protective net (403), of the fan (402);
the support plate (401) is arranged at one end, far away from the baffle plate (203), of the protective shell (201), the support plate (401) is hollow, and the illumination mechanism (406) is uniformly arranged at the inner side of the protective shell (201);
the connecting plugs (305) are arranged on one side of the protective shell (201), the number of the connecting plugs (305) is the same as that of the connecting slots (304), and radians are arranged on the supporting blocks (301);
when the connecting plug (305) is inserted into the connecting slot (304), an external power supply supplies power to the lighting mechanism and the fan through the fixing mechanism.
2. An indoor high-voltage grounding switch according to claim 1, characterized in that the sealing cover (202) is provided with a groove, the magnet block (206) is mounted on the protective housing (201), the sealing cover (202) is detachably connected with the protective housing (201) through the magnet block (206), the protective housing (201) is provided with a port, the protective housing (201) is provided with a groove, and the protective housing (201) is slidably connected with the loop bar spring (205).
3. An indoor high voltage grounding switch as claimed in claim 1, characterized in that said switching mechanism (1) comprises a spiral energy storage spring (101), a sensor (102), a contact spring (103), a mounting chassis (104) and a connector (105), said spiral energy storage spring (101) being mounted on one side of said mounting chassis (104), said sensor (102) being mounted on said mounting chassis (104), said contact spring (103) being mounted on one side of said mounting chassis (104) being located on said sensor (102), said connector (105) being mounted on one side of said mounting chassis (104) being located on said sensor (102).
4. An indoor high voltage grounding switch as claimed in claim 3, characterized in that said mounting chassis (104) is fixedly connected to said loop bar spring (205), said mounting chassis (104) having a copper bus tube mounted thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110038935.9A CN112885635B (en) | 2021-01-12 | 2021-01-12 | Indoor high-voltage grounding switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110038935.9A CN112885635B (en) | 2021-01-12 | 2021-01-12 | Indoor high-voltage grounding switch |
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| Publication Number | Publication Date |
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| CN112885635A CN112885635A (en) | 2021-06-01 |
| CN112885635B true CN112885635B (en) | 2023-07-14 |
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| CN202110038935.9A Active CN112885635B (en) | 2021-01-12 | 2021-01-12 | Indoor high-voltage grounding switch |
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| CN100388402C (en) * | 2005-02-01 | 2008-05-14 | 缪元昌 | Indoor AC high-voltage closed load switch |
| CN103839727B (en) * | 2014-03-28 | 2015-08-05 | 杨明 | Solid insulated full-sealed tri-station isolating switch |
| CN204558957U (en) * | 2015-04-15 | 2015-08-12 | 国家电网公司 | A kind of high-voltage ring main unit |
| CN106532452B (en) * | 2016-11-18 | 2018-03-16 | 国家电网公司 | A kind of insulating boot for power system |
| CN206711812U (en) * | 2017-03-16 | 2017-12-05 | 广州燕瑞机电设备有限公司 | A kind of strong disconnecting switch of the good sealing of anti-seismic performance |
| CN206806817U (en) * | 2017-05-02 | 2017-12-26 | 国网内蒙古东部电力有限公司呼伦贝尔供电公司 | A kind of radiating dustproof multifunction power cabinet |
| CN207319983U (en) * | 2017-09-07 | 2018-05-04 | 张明非 | A kind of power disconnecting switch |
| CN207651403U (en) * | 2018-01-15 | 2018-07-24 | 东莞市崚茂五金包装制品有限公司 | A kind of disconnecting switch that the good leakproofness of anti-seismic performance is strong |
| CN209183453U (en) * | 2019-02-12 | 2019-07-30 | 江西晶鼎电气有限公司 | A kind of outdoor high-voltage vacuum breaker shell structure |
| CN210297282U (en) * | 2019-06-26 | 2020-04-10 | 徐州迈科思机械科技有限公司 | Mining power supply device |
| CN210182284U (en) * | 2019-09-02 | 2020-03-24 | 浙江上宾电力科技有限公司 | Protection device of outdoor high-voltage isolating switch |
| CN210744285U (en) * | 2019-10-30 | 2020-06-12 | 南京海之天科技有限公司 | Management interface box integrating signal and power supply |
| CN211428610U (en) * | 2019-12-02 | 2020-09-04 | 朱阳 | Novel dampproofing dustproof switch board |
| CN111371291A (en) * | 2020-04-29 | 2020-07-03 | 江苏海事职业技术学院 | Modular automatic frequency conversion cabinet of high leakproofness |
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