CN-116054003-B - Integrated switching device

CN116054003BCN 116054003 BCN116054003 BCN 116054003BCN-116054003-B

Abstract

The application discloses integrated switch equipment which comprises an equipment shell, three-phase circuit breakers and three-phase switch assemblies, wherein the three-phase switch assemblies at least comprise two, the three-phase switch assemblies are electrically connected with the three-phase circuit breakers, the three-phase circuit breakers and the three-phase switch assemblies are both positioned in the inner cavity of the equipment shell, the three-phase switch assemblies comprise three-phase movable side conductors, and projections of the three-phase movable side conductors coincide along the arrangement direction of the three-phase movable side conductors. In the integrated switch equipment provided by the application, the three-phase circuit breaker and the three-phase switch assembly are integrated in the equipment shell, the three-phase movable side conductor projection is overlapped along the arrangement direction of the three-phase movable side conductor, and the three-phase static side conductor projection is overlapped, so that the movable side conductor, the static side conductor and the movable side conductor of the circuit breaker of the three-phase switch assembly can be shared without considering the shape and the installation sequence, thereby improving the manufacturing of parts of the integrated switch equipment (the number of moulds is reduced by castings, the tool changing times by machining parts is reduced) and the assembly efficiency, and reducing the production cost.

Inventors

ZHU KAI
LIANG RUI
LUAN RIWEI
MA ZHANFENG
HE JIA
CHANG ZHIGUO
ZHANG HENGLI
ZHANG ZHENFENG
LI XIN
TONG RUNDONG

Assignees

西安西电开关电气有限公司
中国西电电气股份有限公司

Dates

Publication Date: 20260505
Application Date: 20221108

Claims (9)

1. The integrated switch device is characterized by comprising a device shell, a three-phase breaker and three-phase switch assemblies, wherein the three-phase switch assemblies at least comprise two parts, the three-phase switch assemblies are electrically connected with the three-phase breaker, and the three-phase breaker and the three-phase switch assemblies are both positioned in an inner cavity of the device shell; the equipment shell comprises a shell main cylinder (11), a shell support cylinder and a shell which is detachably connected with the shell support cylinder, wherein one side, far away from the shell support cylinder, of the shell is blocked by a cover plate, the shell main cylinder (11) is communicated with the shell support cylinder, and the three-phase circuit breaker is positioned in the shell main cylinder (11); At least one group of three-phase switch components are isolation grounding switches, each isolation grounding switch comprises a movable side conductor and an isolation grounding switch outlet shaft (33), each isolation grounding switch outlet shaft (33) is located in a shell supporting cylinder and is directly connected with an isolation grounding switch operating mechanism (72) fixed outside the shell supporting cylinder, each movable side conductor of each isolation grounding switch is an isolation grounding switch movable side conductor (32) in one-to-one correspondence with an isolation grounding switch isolation static side conductor (31), and each isolation grounding switch movable side conductor (32) is fixed on a metal or nonmetal bulge (19) inside the shell supporting cylinder after being connected in series through an insulating piece.
2. An integrated switchgear according to claim 1, characterized in that the housing main cylinder (11) axis and the housing branch cylinder axis are perpendicular.
3. The integrated switching device of claim 1, wherein the three-phase switch assembly comprises a disconnector and a fast ground switch; or the three-phase switch assembly is an isolated grounding switch, and the isolated grounding switch comprises an isolated switch and a grounding switch.
4. An integrated switching device according to claim 3, characterized in that, The isolating switch comprises three isolating switch static side conductors (41 and 41 '), wherein the movable side conductors of the isolating switch are isolating switch movable side conductors (42 and 42') which are in one-to-one correspondence with the isolating switch static side conductors (41 and 41 '), the three isolating switch static side conductors (41 and 41') are respectively arranged on three-phase arc-extinguishing chamber static side conductors (23) of the three-phase circuit breaker, the three-phase arc-extinguishing chamber movable side conductors (21) are arranged in a straight line shape, and the distance between the axes of one ends, connected with the isolating switch movable side conductors (42 and 42 '), of the adjacent two isolating switch static side conductors (41 and 41') is smaller than the distance between the axes of the adjacent two three-phase arc-extinguishing chamber static side conductors (23); The isolating earthing switch comprises three isolating earthing switch isolating static side conductors (31), the three isolating earthing switch isolating static side conductors (31) are respectively arranged on three-phase arc-extinguishing chamber moving side conductors (21) of the three-phase circuit breaker, the three-phase arc-extinguishing chamber moving side conductors (21) are arranged in a straight shape, and the axial distance between one end of each isolating earthing switch isolating static side conductor (31) in butt joint with each isolating earthing switch moving side conductor (32) is smaller than the axial distance between two adjacent three-phase arc-extinguishing chamber moving side conductors (21).
5. The integrated switching device of claim 4, wherein the isolated ground switch active side conductor (32) and the isolated switch active side conductors (42), (42') are arranged in the same conductor mirror image.
6. The integrated switching device according to claim 4, characterized in that the free ends of the static side conductors (41), (41 ') of the disconnector extend in a direction towards the moving side conductor (21) of the arc extinguishing chamber, the moving side conductors (42), (42') of the disconnector being fixed on the metallic or non-metallic projections (19) inside the housing leg after being connected in series by means of insulating elements.
7. The integrated switch device according to claim 1, further comprising a quick ground switch driving mechanism (73), wherein the device housing comprises a housing main cylinder (11), a housing support cylinder and a shell which is detachably connected with the housing support cylinder, one side of the shell away from the housing support cylinder is plugged through a cover plate, the housing main cylinder (11) is communicated with the housing support cylinder, the three-phase circuit breaker is positioned in the housing main cylinder (11), the three-phase switch assembly is connected with the shell and positioned in an inner space formed by the housing support cylinder and the shell, and the three-phase switch assembly corresponds to the shell one by one; The fast ground switch, the housing, the cover plate, and the fast ground switch drive mechanism (73) are integrated into a detachable module.
8. The integrated switching device of claim 1, wherein the three-phase switching assembly comprises two, three, or four groups, wherein at least one group of the three-phase switching assemblies is an isolated ground switch; When the three-phase switch assemblies are two groups, the two groups of three-phase switch assemblies are arranged on the same side of a plane formed by the center lines of the three-phase circuit breakers; When the three-phase switch assemblies are three groups, two groups of the three-phase switch assemblies are arranged on the same side of a plane formed by the center lines of the three-phase circuit breakers, and the other groups of the three-phase switch assemblies are arranged on the other side of the plane formed by the center lines of the three-phase circuit breakers; When the three-phase switch assemblies are four groups, two groups of the three-phase switch assemblies are arranged on the same side of a plane formed by the central lines of the three-phase circuit breakers, and the other two groups of the three-phase switch assemblies are arranged on the other side of the plane formed by the central lines of the three-phase circuit breakers, wherein the static side conductors of the isolating switches of one group of the switch assemblies are led out by the static side conductors of the isolating switches of the other group of the switch assemblies on the same side.
9. The integrated switching device according to claim 1, further comprising an outlet bushing (62), a cable compartment (64) and a grounding block (171), wherein the grounding switch static side (35), the outlet bushing (62) and the cable compartment (64) of the isolating grounding switch are integrated on the cover plate, the cover plate is detachably connected with the housing, the surface of the cover plate, which is located outside the housing, is provided with the grounding block, the grounding switch static side (35) is connected with the grounding block (171) after being shorted by a hard conductor (172), the grounding block (171) and the hard conductor (172) are located outside the cable compartment (64), and the grounding block (171) is connected with the cover plate.

Description

Integrated switching device Technical Field The invention relates to the technical field of electrical equipment, in particular to integrated switching equipment. Background In offshore wind power equipment, the inner space of a fan tower is small, and the switchgear is required to be compact in structure, small in occupied area and light in weight. The traditional switchgear realizes the connection between each component through insulating barrier, and three-phase circuit breaker, isolator, earthing switch, quick earthing switch component are located in independent casing respectively, are connected through the insulating barrier that ventilates or do not ventilate each other. Meanwhile, the three-phase movable side conductors of the three-phase switch assembly in the integrated switch equipment are different in structure, when the integrated switch equipment is assembled, each movable side conductor needs to be distinguished firstly, then each movable side conductor is installed at a preset position, if the installation position is wrong, the integrated switch equipment is reinstalled after being disassembled, and therefore the assembly efficiency of the integrated switch equipment is low. Therefore, how to improve the assembly efficiency of the integrated switching device is a technical problem to be solved by those skilled in the art. Disclosure of Invention The invention aims to provide an integrated switch device, which has higher assembly efficiency. The invention provides integrated switch equipment, which comprises an equipment shell, a three-phase breaker and three-phase switch assemblies, wherein the three-phase switch assemblies at least comprise two, the three-phase switch assemblies are electrically connected with the three-phase breaker, the three-phase breaker and the three-phase switch assemblies are both positioned in an inner cavity of the equipment shell, the three-phase switch assemblies comprise three-phase movable side conductors and three-phase static side conductors, and the three-phase movable side conductors are overlapped in projection, the three-phase static side conductors are overlapped in projection, and the three-phase conductors of the three-phase breaker are overlapped in projection along the arrangement direction of the three-phase movable side conductors. Optionally, in the integrated switch device, the device housing includes a housing main cylinder, a housing support cylinder, and a housing detachably connected to the housing support cylinder, wherein a side of the housing away from the housing support cylinder is plugged by a cover plate, the housing main cylinder is communicated with the housing support cylinder, the three-phase circuit breaker is located in the housing main cylinder, the three-phase switch assembly is connected to the housing and located in an internal space formed by the housing support cylinder and the housing, and the three-phase switch assembly corresponds to the housing one by one. Optionally, in the integrated switch device, the side walls of the main casing and the support casing are circular arc-shaped wall surfaces, and the axis of the main casing and the axis of the support casing are perpendicular. Optionally, in the integrated switching device, the three-phase switch assembly includes a disconnecting switch and a fast grounding switch; or the three-phase switch assembly is an isolated grounding switch, and the isolated grounding switch comprises an isolated switch and a grounding switch. Optionally, in the above integrated switching device, The isolating switch comprises three isolating switch static side conductors, wherein the moving side conductors of the isolating switch are isolating switch moving side conductors corresponding to the isolating switch static side conductors one by one, the three isolating switch static side conductors are respectively arranged on three-phase arc-extinguishing chamber static side conductors of the three-phase circuit breaker, the three-phase arc-extinguishing chamber moving side conductors are arranged in a straight shape, and the distance between the axes of the adjacent two isolating switch static side conductors, the upper end of each isolating switch moving side conductor and the connected end is smaller than the distance between the axes of the adjacent two three-phase arc-extinguishing chamber static side conductors; The isolation grounding switch comprises three isolation grounding switch isolation static side conductors, the movable side conductors of the isolation grounding switch are isolation grounding switch movable side conductors corresponding to the isolation grounding switch isolation static side conductors one by one, the three isolation grounding switch isolation static side conductors are respectively installed on three-phase arc-extinguishing chamber movable side conductors of the three-phase circuit breaker, the three-phase arc-extinguishing chamber movable side conductors are arr