1100kV isolating switch shell

Abstract

The utility model provides a 1100kV disconnecting switch housing, and relates to the field of disconnecting switches, the 1100kV disconnecting switch housing comprises a protection assembly and a disconnecting switch body, the disconnecting switch body comprises an insulation column, the upper end of the insulation column is respectively provided with a static contact end and a moving contact end, and a knife switch is connected between the static contact end and the moving contact end. The protection assembly is arranged on the upper side of the disconnecting switch body and comprises a shell, the bottom of one side of the shell is hinged to a wiring terminal connected to the outer side of the static contact end, the bottom of the other side of the shell is clamped to a wiring terminal connected to the outer side of the moving contact end, an installation box is arranged in the shell, a filter screen is arranged in the installation box, and the filter screen is arranged in the installation box. And a fan is arranged on the lower side of the filter screen. The 1100kV extra-high voltage isolating switch solves the problems that the normal working state of the existing 1100kV extra-high voltage isolating switch cannot be ensured and the service life is shortened due to the influence of environmental factors in the outdoor use environment.

Description

Technical Field

[0001] This utility model relates to the field of disconnector switch housing technology, specifically to a 1100kV disconnector switch housing. Background Technology

[0002] High-voltage disconnect switches are important switching devices in the electrical systems of power plants and substations. They must be used in conjunction with high-voltage circuit breakers. Their main function is to ensure the safety of high-voltage electrical appliances and equipment during maintenance and to isolate voltage.

[0003] A search revealed existing technology (publication number: CN116759259A), which describes an "1100kV UHV disconnector switch, comprising a conducting mechanism and two sets of tensioning connection mechanisms. The conducting mechanism includes a conductive rod and V-shaped contact blocks, with the V-shaped contact blocks located at both ends of the conductive rod. The tensioning connection mechanism includes a tensioning plate and a connecting plate, with a conductive connecting cable disposed between the tensioning plate and the connecting plate. The conductive connecting cable cooperates with the V-shaped contact blocks. By starting a drive motor to rotate the conductive rod, when the conductive rod rotates to a state where the conductive connecting cables are perpendicular to each other, the V-shaped contact blocks will contact and squeeze the conductive connecting cable, causing it to bend. The first fixed seat will be pulled to one side, at which point the return spring will be stretched, simultaneously applying a certain tension to the conductive connecting cable, ensuring that the conductive connecting cable is always in a tensioned state, preventing gaps between the conductive connecting cable and the V-shaped contact blocks, and effectively preventing the occurrence of electric arcs when the switch is closed."

[0004] Although the existing 1100kV UHV disconnect switches have achieved the effect of closing and extinguishing arcs, they still have some shortcomings: the existing 1100kV UHV disconnect switches are generally exposed at the top of the high-voltage cable support poles outdoors, and their main structure is exposed to the environment and affected by various environmental factors, including air humidity, rain, snow, and air debris in windy weather. Therefore, it is not easy to ensure the normal working condition of the disconnect switch and the lifespan is reduced. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, a 1100kV disconnector housing is provided to address the problem that existing 1100kV UHV disconnectors are affected by environmental factors in outdoor use, resulting in the inability to guarantee their normal operation and a reduced service life.

[0006] To achieve the above objectives, a 1100kV disconnector housing is provided, comprising: a protective component and a disconnector body. The disconnector body includes an insulating column, with a stationary contact end and a moving contact end respectively provided at the upper end of the insulating column, and a switch connecting the stationary contact end and the moving contact end. The protective component is located on the upper side of the disconnector body and includes a housing. The bottom of one side of the housing is hinged to a terminal block connected to the outside of the stationary contact end, and the bottom of the other side of the housing is snapped onto a terminal block connected to the outside of the moving contact end. An installation box is provided inside the housing, and a filter screen is provided inside the installation box, with a fan located below the filter screen.

[0007] Furthermore, a cover plate is hinged to the front side of the housing, and a pin is connected to one edge of the cover plate, with a sleeve inserted into the rear end of the pin.

[0008] Furthermore, an insulating plate is provided on one bottom side of the outer casing, and a positioning groove is provided on the lower side of the insulating plate. A clamping block is provided inside the positioning groove, and a threaded rod is rotatably connected to the outside of the clamping block.

[0009] Furthermore, the mounting box is fixed to the inner wall of the top of the outer shell, and air inlets are provided on both sides of the mounting box, and ventilation holes are provided at the bottom of the mounting box.

[0010] Furthermore, the filter screen is designed as a rectangular frame structure, and the inside of the filter screen is filled with desiccant, and the filter screen is placed above the ventilation holes.

[0011] Furthermore, a support rod is connected to the lower end of the mounting box and to the outside of the fan, and the lower end of the support rod is fixed to the upper side of the switch, and the support rod is made of insulating material.

[0012] Furthermore, there is a gap between the fan and the switch, and the fan is fixed to the lower side of the ventilation hole.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The protective assembly includes a housing and a cover plate connected to the front of the housing, so that when the switch is closed, the housing directly covers the outside of the switch and the contacts, thereby protecting the switch and the two moving and stationary contacts. The cover plate can be opened or closed easily through the pin and the sleeve. When the switch is closed, one end of the switch inserted into the moving contact can be fixed by bolts to achieve a stable connection of the switch. Then, the positioning groove and clamp on the lower side of the insulating plate can be used to fix the housing to the outside of the terminal block by rotating the bolts.

[0015] 2. The outer casing facilitates protection of the inner knife switch and contacts from rain, snow, airborne debris, and dust. Simultaneously, the installation of an internal filter and fan allows the desiccant inside the filter to dry the air dispersed by the fan, which then blows the air downwards onto the knife switch and contacts. This ensures the dryness of the energized connection parts of the disconnect switch, providing moisture protection and extending its service life. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of an embodiment of the present utility model.

[0017] Figure 2 This is a three-dimensional structural diagram of the outer shell of an embodiment of the present utility model.

[0018] Figure 3 This is a schematic diagram of the outer side structure of an embodiment of the present utility model.

[0019] Figure 4 This is a schematic diagram of the internal structure of the outer shell in an embodiment of the present utility model.

[0020] In the diagram: 1. Protective components; 11. Housing; 111. Mounting box; 112. Air inlet; 113. Filter screen; 114. Ventilation hole; 115. Fan; 116. Support rod; 12. Cover plate; 13. Pin; 14. Sleeve; 15. Insulating plate; 151. Positioning groove; 152. Clamping block; 116. Support rod; 16. Threaded rod; 2. Disconnecting switch body; 21. Insulating column; 22. Terminal block; 23. Stationary contact end; 24. Knife switch; 25. Moving contact end. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figures 1 to 4As shown, this utility model provides a 1100kV disconnector housing, including: a protective component 1 and a disconnector body 2. The disconnector body 2 includes an insulating column 21, and the upper end of the insulating column 21 is respectively provided with a stationary contact end 23 and a moving contact end 25. A switch 24 is connected between the stationary contact end 23 and the moving contact end 25. The protective component 1 is located on the upper side of the disconnector body 2, and the protective component 1 includes a housing 11. The bottom of one side of the housing 11 is hinged to a terminal 22 connected to the outside of the stationary contact end 23, and the bottom of the other side of the housing 11 is snapped onto a terminal 22 connected to the outside of the moving contact end 25. The housing 11 has a mounting box 111 inside, and a filter screen 113 is provided inside the mounting box 111. A fan 115 is provided on the lower side of the filter screen 113.

[0023] In this embodiment, the protective component 1 constitutes the main structure of the 1100kV disconnector housing involved in this application.

[0024] Specifically, the switch 24 is manually closed or opened, and after being closed, it is connected and fixed to the moving contact end 25 by bolts.

[0025] Specifically, the bottom of the insulating column 21 is provided with a base, and the base is fixed to the upper end of the pole of the high-voltage cable by bolts.

[0026] like Figure 1 , Figure 2 and Figure 3 In the case, a cover plate 12 is hinged to the front side of the outer shell 11, and a pin 13 is connected to one edge of the cover plate 12. A sleeve 14 is inserted into the rear end of the pin 13. An insulating plate 15 is provided on the bottom side of one side of the outer shell 11. A positioning groove 151 is provided on the lower side of the insulating plate 15. A clamping block 152 is provided inside the positioning groove 151. A threaded rod 16 is rotatably connected to the outside of the clamping block 152.

[0027] Specifically, the upper side of the cover plate 12 is hinged to the opening on the front side of the housing 11, and the upper end of the cover plate 12 is provided with a damping pivot, which makes it easy to maintain a certain angle of opening after the cover plate 12 is opened, thereby making it easy to fix the knife gate 24.

[0028] Specifically, the pin 13 and the sleeve 14 are designed as magnets of opposite polarity, which facilitates the closing of the cover plate 12.

[0029] In a preferred embodiment, by providing a positioning groove 151 and a clamping block 152, the positioning groove 151 is snapped onto the outside of the terminal 22, and then the terminal 22 is clamped and fixed by the clamping block 152 and the threaded rod 16.

[0030] like Figure 2 and Figure 4In the installation box 111, the mounting box 111 is fixed to the top inner wall of the outer shell 11, and the mounting box 111 has air inlet holes 112 on both side walls and ventilation holes 114 at the bottom. The filter screen 113 is a rectangular frame structure and is filled with desiccant. The filter screen 113 is placed on the upper side of the ventilation hole 114. The lower end of the mounting box 111 is connected to the outside of the fan 115. The lower end of the support rod 116 is fixed to the upper side of the switch 24 and is made of insulating material. There is a gap between the fan 115 and the switch 24, and the fan 115 is fixed on the lower side of the ventilation hole 114.

[0031] Specifically, the suction side of the fan 115 faces upward and the blowing side faces downward. After the fan 115 is turned on, outside air enters the filter 113 through the air inlet 112 and is then filtered by the filter 113. At the same time, it is dried by the desiccant inside the filter 113 and then blows downward toward the isolating switch, so that the air around the isolating switch remains dry.

[0032] As a preferred embodiment, by providing a support rod 116, the housing 11 is kept rotating synchronously when the switch 24 is closed, which facilitates operation.

[0033] In use, the protective assembly includes a housing and a cover plate connected to the front of the housing. When the switch is closed, the housing directly covers the outside of the switch and contacts, thus protecting the switch and the two moving and stationary contacts. The cover plate can be easily opened or closed using pins and sleeves. When the switch is closed, one end of the switch inserted into the moving contact can be fixed with bolts to achieve a stable connection. Then, the positioning groove and clamp on the underside of the insulating plate allow the housing to be easily fixed to the outside of the terminal block by rotating the bolts. The housing provides rain, snow, airborne debris, and dust protection for the inner switch and contacts. At the same time, the installation of a filter screen and fan inside the box allows the desiccant inside the filter screen to dry the air through the fan and then blow it downwards onto the switch and contacts, thus ensuring the dryness of the energized connection parts of the disconnecting switch, providing a moisture-proof effect for the components, and extending the service life of the disconnecting switch.

[0034] This utility model addresses the problem that existing 1100kV UHV disconnector housings are susceptible to environmental factors in outdoor use, leading to compromised normal operation and reduced service life. It improves the overall protection of the disconnector and extends its service life compared to existing 1100kV disconnector housing technology.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A 1100 kV disconnector housing, comprising: The utility model provides an isolation switch protection assembly, including isolation switch body (2) and protection assembly (1), isolation switch body (2) includes insulating column (21), and insulating column (21) upper end is equipped with static contact end (23) and movable contact end (25) respectively, and static contact end (23) and movable contact end (25) between connection have the shutter (24), its characterized in that: protection assembly (1) is located in the upper side of isolation switch body (2), and protection assembly (1) includes shell (11), and shell (11) one side bottom is hinged on the wire terminal (22) of static contact end (23) outside connection, and shell (11) other side bottom is clamped on the wire terminal (22) of movable contact end (25) outside connection, the inside of shell (11) is equipped with installation box (111), and the inside of installation box (111) is equipped with filter screen (113), and the downside of filter screen (113) is equipped with fan (115).

2. The 1100 kV disconnector housing according to claim 1, characterized in that The front side of shell (11) is hinged with cover plate (12), one side edge of cover plate (12) is connected with bolt (13), and the rear end of bolt (13) is inserted with sleeve (14).

3. The 1100 kV disconnector housing according to claim 1, characterized in that The bottom of shell (11) is equipped with insulating plate (15), the downside of insulating plate (15) is equipped with positioning groove (151), and the inside of positioning groove (151) is equipped with clamping block (152), and the outside of clamping block (152) is rotatably connected with threaded rod (16).

4. The 1100 kV disconnector housing according to claim 1, characterized in that The inside wall of shell (11) is equipped with installation box (111), and the two side walls of installation box (111) are equipped with air inlet hole (112), and the bottom of installation box (111) is equipped with air vent (114).

5. The 1100 kV disconnector housing according to claim 1, characterized in that The filter screen (113) is equipped with a rectangular frame structure, and the inside of the filter screen (113) is filled with a drying agent, and the filter screen (113) is placed on the upper side of the air vent (114).

6. The 1100 kV disconnector housing according to claim 1, characterized in that The lower end of the installation box (111) is connected with a support rod (116) outside the fan (115), and the lower end of the support rod (116) is fixed on the upper side of the shutter (24), and the support rod (116) is made of insulating material.

7. The 1100 kV disconnector housing according to claim 1, characterized in that The fan (115) and the shutter (24) are spaced apart, and the fan (115) is fixed on the lower side of the air vent (114).

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