Normal-pressure sealed air-insulated ring main unit and sealed cabinet body thereof

Abstract

The utility model relates to a normal pressure sealing air insulation ring main unit and a sealing cabinet body thereof, an isolation switch device and a vacuum switch device are arranged in the sealing cabinet body, an operation device is installed in an operation room outside a front side plate of the sealing cabinet body, and a plurality of expansion installation ports on a transverse side plate of the sealing cabinet body are correspondingly matched with bus sockets. The isolating switch device is arranged above the vacuum switch device, an electric connecting part of the bus socket is electrically connected with an electric connecting end at the top of the isolating switch device, the top of a front side plate of the sealing cabinet body is provided with a step part which is recessed backwards and is positioned above the expansion mounting port, and the top space of the operation room extends to a concave cavity corresponding to the step part; an elastic operating mechanism of the operating device is placed on the step part, an output shaft of the elastic operating mechanism is connected with a transmission connecting rod, and the transmission connecting rod is connected with a main shaft driving assembly connected with a main shaft of the vacuum switch device. The scheme of upper isolation and lower grounding is provided, and the structure is compact.

Description

TECHNICAL FIELD

[0001] The utility model relates to atmospheric pressure sealed air insulation ring network cabinet and sealed cabinet body thereof. BACKGROUND

[0002] The atmospheric pressure switch cabinet refers to the switch cabinet (i.e. non-sealed, non-gas-filled structure) with the internal air pressure consistent with the external atmospheric pressure. With the implementation of the new atmospheric pressure switch cabinet national grid standard (issued and implemented in 2023, mainly aiming at the design, test and acceptance of the atmospheric pressure sealed air insulation switch cabinet to put forward technical requirements), the atmospheric pressure sealed air insulation ring network cabinet has more strict size requirements.

[0003] In the traditional switch cabinet, there are upper isolation and lower grounding scheme and lower isolation and upper grounding scheme, but under the new atmospheric pressure switch cabinet national grid standardization, the upper isolation and lower grounding scheme in the atmospheric pressure sealed air insulation ring network cabinet under the existing sealed cabinet body structure has the following problems: corresponding configuration in the vacuum switch device position elastic operation mechanism cannot be assembled. The specific mechanism operation room is arranged on the front side of the sealed cabinet body of the atmospheric pressure switch cabinet, and the isolation operating mechanism for operating the disconnecting switch device and the elastic operation mechanism of the vacuum switch device are arranged in the mechanism operation room. Under the existing sealed cabinet body form (the main part of the sealed cabinet body of the atmospheric pressure switch cabinet is usually designed as a square, and the mechanism operation room is a rectangular space arranged on the side of the sealed cabinet body) and the elastic operation mechanism installation and arrangement form, the depth of the mechanism operation room cannot realize the installation of the elastic operation mechanism. That is, directly using the traditional elastic operation mechanism installation mode to the side of the existing sealed cabinet body will result in that the overall depth size of the atmospheric pressure switch cabinet exceeds the national grid standard. In addition, there is the defect that the busbar socket is inconvenient to install. SUMMARY

[0004] The utility model discloses the purpose of invention: to overcome the defects in the prior art, the utility model provides a kind of atmospheric pressure sealed air insulation ring network cabinet, realize in upper isolation and lower grounding scheme, and meet the installation needs of operating device.

[0005] To achieve the above object, the utility model provides the following technical scheme:

[0006] The application discloses a kind of normal pressure sealed air insulation ring network cabinet, including sealed cabinet, switch system and operating device, switch system includes disconnecting device and vacuum switch device arranged in sealed cabinet in cascade, operating device includes for the pop operation mechanism of operating vacuum switch device and for the isolation operating mechanism of operating disconnecting device, the front side plate outside of sealed cabinet is equipped with the operating chamber for operating device arrangement, it is equipped with several expansion installation port along front and rear on the transverse side plate of sealed cabinet, expansion installation port is correspondingly matched with busbar socket, busbar socket includes insulator and center conductor, insulator has a second end and second end, center conductor includes the plug-in conductive rod corresponding in plug-in port, plug-in conductive rod is connected with electric connector, electric connector has the electric connection part corresponding on second end, the electric connection part of busbar socket is electrically connected with the electric connection end of the top of switch system, characterized in that: the disconnecting device is arranged above the vacuum switch device, the top of the front side plate of the sealed cabinet has the step portion formed by recessing backwards, step portion is located above expansion installation port, the top space of operating chamber extends to the recessed cavity corresponding to step portion, the pop operation mechanism rests on step portion, the output shaft of pop operation mechanism is connected with the transmission connecting rod extending in height direction, the main shaft driving assembly is arranged at the main shaft position of vacuum switch device, the main shaft driving assembly is connected with the main shaft of vacuum switch device, transmission connecting rod connects main shaft driving assembly.

[0007] Preferably, the main shaft driving assembly includes a mounting frame, a linkage arm, a toggle arm, and a force reduction arm. The mounting frame is fixed to the front side plate of the sealed cabinet. The toggle arm is installed on the main shaft of the vacuum switch device and can drive the main shaft of the vacuum switch device to rotate. The force reduction arm and the linkage arm are distributed on the two sides of the transmission connecting rod in the transverse direction. One end of the force reduction arm and the linkage arm is hingedly connected to the lower end of the transmission connecting rod via a hinge shaft. The other end of the force reduction arm opposite to the hingedly connected end is pivotally installed on the mounting frame. The other end of the linkage arm opposite to the hingedly connected end is hingedly connected to the swing end of the toggle arm. The output shaft of the pop operation mechanism is installed with a rocker arm, and the upper end of the transmission connecting rod is hingedly connected to the rocker arm.

[0008] Preferably, the insulator includes a plug-in socket portion formed with a plug-in port at one end. A "7"-shaped toggle arm is integrally formed on the lateral side wall of the plug-in socket portion. The "7"-shaped toggle arm includes a lateral protruding portion protruding from the lateral side wall of the plug-in socket portion and a longitudinal handle portion constituting the second end. The longitudinal handle portion extends in a direction opposite to the direction of the plug-in port. The second end of the longitudinal handle portion protrudes from the end of the plug-in socket portion. The longitudinal handle portion of the busbar socket extends to the electric connection end on the top of the disconnecting device and is electrically connected.

[0009] Preferably, the electric connector comprises an integrally formed L-shaped plate, the head end of one arm plate of the L-shaped plate extends to the second end to form an electric connection part, and the other arm plate of the L-shaped plate extends to a position opposite to the plug-in conductive rod and is fixedly connected with the plug-in conductive rod.

[0010] Preferably, the plug-in conductive rod is provided with a bolt hole, the arm plate of the L-shaped plate is provided with a connecting through hole, and a fixing bolt passes through the connecting through hole and is fixed in the bolt hole.

[0011] The utility model discloses a sealed cabinet body of normal pressure sealed air insulation ring net cabinet, including the sealed cabinet body of constituting sealed chamber, the front side board outside of sealed cabinet body constitutes operating room, its characterized in that: the front side board top of sealed cabinet body has the step portion that recesses to the rear constitutes, and the step portion is located above the extension installation mouth, and the top space of operating room extends to the recessed cavity corresponding to the step portion.

[0012] By adopting the above technical scheme, the normal pressure switch cabinet adopts the upper isolation and lower connection scheme, and the spring operating mechanism is reasonably arranged, the space on the top of the sealed cabinet body is fully utilized, the step portion recessed to the rear on the top of the sealed cabinet body, the recessed cavity corresponding to the step portion constitutes the extension in the depth direction of the top space of the operating room, and the spring operating mechanism is arranged on the top of the sealed cabinet body, and the spring operating mechanism drives the vacuum switch through the transmission connecting rod and the main shaft driving assembly, so that the compact design of the normal pressure switch cabinet is met.

[0013] The utility model will be further described in connection with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is structure schematic diagram of normal pressure sealed air insulation ring net cabinet of the utility model;

[0015] Figure 2 It is structure schematic diagram of sealed cabinet body part of normal pressure sealed air insulation ring net cabinet of the utility model after operating room box board is removed;

[0016] Figure 3 It is Figure 2 Internal structure schematic diagram;

[0017] Figure 4 It is structure schematic diagram of busbar socket of the utility model;

[0018] Figure 5 It is busbar socket of the utility model overhead view;

[0019] Figure 6 It is Figure 5 Sectional view along A-A line of the utility model;

[0020] Figure 7The utility model discloses a center conductor's structure schematic drawing

[0021] Figure 8 The utility model discloses a main shaft drive assembly split state diagram (remove installation frame front side end plate)

[0022] Figure 9 The utility model discloses a main shaft drive assembly closing state diagram (remove installation frame front side end plate). Specific implementation

[0023] Referring to the accompanying Figures 1-3 The utility model discloses a kind of normal-pressure sealed air insulation ring network cabinet, including sealed cabinet body 1, switch system and operating device, switch system includes isolating switch device 2 and vacuum switch device 3, operating device includes elastic operating mechanism 5 and isolating operating mechanism 6, elastic operating mechanism 5 is used to control vacuum switch device 3, isolating operating mechanism 6 is used to control isolating switch device, isolating switch device 2 and vacuum switch device 3 are stacked in sealed cabinet body 1, the utility model uses isolating switch device 2 to be arranged above vacuum switch device 3, i.e. top isolation under the place scheme, wherein isolating switch device 2 and vacuum switch device 3 are conventional technology in the art, so its specific structure will not be repeated, sealed cabinet body 1 includes the sealed cabinet body of constituting sealed chamber, the front side plate 11 outside of sealed cabinet body 1 is equipped with the operating room 8 for operating device arrangement, there are several expansion installation port 121 on the transverse side plate 12 of sealed cabinet body 1, expansion installation port 121 is correspondingly matched with busbar socket 4, usually this arrangement, it will lead to the electrical connection end 2-1 of the top of isolating switch device 2 higher than expansion installation port 121, to solve the traditional top isolation under the place scheme, elastic operating mechanism arrangement and the corresponding position design of vacuum switch device, lead to the problem that cannot adapt to the normal-pressure switch cabinet under new standardization of State Grid, the top of the front side plate 11 of sealed cabinet body 1 has the step portion 111 recessed to the rear and constitutes, step portion 111 is located above expansion installation port 121, the top space of operating room 8 extends to the recessed cavity corresponding to step portion 111, the elastic operating mechanism 5 rests on step portion, so that the elastic operating mechanism 5 is moved to the top of sealed cabinet body arrangement, the output shaft of elastic operating mechanism 5 is connected with transmission connecting rod 53, transmission connecting rod 53 is connected with main shaft drive assembly 7, and main shaft drive assembly 7 is connected with the main shaft 31 of vacuum switch device 3. The top of sealed cabinet body 1 is retracted, on the basis of meeting the sealing requirement of sealed cabinet body, so that the top depth of operating room 8 can be extended, realizes that elastic operating mechanism 5 is arranged at the top of sealed cabinet body 1, meets the compact design of the normal-pressure switch cabinet of top isolation under the place scheme.

[0024] As Figures 1-3 And Figure 8 , Figure 9To further realize stable and reliable operation control of the vacuum switch, the main shaft driving assembly 7 is designed with a force reduction mechanism. Specifically, the main shaft driving assembly 7 comprises a mounting frame 71, a linkage arm 72, a crank arm 73 and a force reduction arm 74. The mounting frame 71 is fixed on the front side plate 11 of the sealed cabinet 1. The crank arm 73 is installed on the main shaft 31 of the vacuum switch device 3 and can drive the main shaft 31 of the vacuum switch device 3 to rotate. The force reduction arm 74 and the linkage arm 72 are distributed on the two sides of the transmission connecting rod 53 in the transverse direction. One end of the force reduction arm 74 and the linkage arm 72 is hingedly connected to the lower end of the transmission connecting rod 53 through a hinge shaft 75. The other end of the force reduction arm 74, which is opposite to the hinged end of the force reduction arm 74 and the transmission connecting rod 53, is pivotally installed on the mounting frame 71. The pivot point of the force reduction arm 74 fixed on the mounting frame 71 constitutes a force reduction point 74a. The other end of the linkage arm 72, which is opposite to the hinged end of the linkage arm 72 and the transmission connecting rod 53, is hingedly connected to the swing end of the crank arm 73. When the transmission connecting rod 53 pulls the linkage arm 72 upward, the linkage arm 72 pushes the crank arm 73 to swing, thereby driving the main shaft 31 to rotate clockwise. The cam on the main shaft 31 drives the vacuum switch to close (as shown in Figure 9 The reverse force of the over-travel spring 32 on the vacuum switch device is eliminated through the force reduction point 74a of the force reduction arm 74, thereby ensuring stable and reliable opening operation of the spring operation mechanism and realizing reverse action as shown in Figure 8 The output shaft 51 of the spring operation mechanism 5 is installed with a rocker arm 52, and the upper end of the transmission connecting rod 53 is hingedly connected to the rocker arm 52. The linkage structure of the spring operation mechanism and the vacuum switch control mechanism is simple and stable and reliable in action. The spring operation mechanism is usually also linked with the isolation door of the isolation operation mechanism to realize interlocking. The isolation door of the isolation operation mechanism is connected to the middle part of the transmission connecting rod 53.

[0025] As shown in Figures 3-7As shown, the busbar socket 4 generally comprises an insulator 41 having a plug-in port 41a and a second end portion 41b, and a center conductor 42 comprising a plug-in conductive rod 421 corresponding in the plug-in port 41a, the plug-in conductive rod 421 being connected with an electric connecting piece 422 having an electric connecting portion 422a corresponding on the second end portion 41b, the electric connecting portion 422a being electrically connected with the electric connecting end 2-1 on the top of the isolating switch device 2. As another embodiment of the utility model, for facilitating the installation and arrangement of the busbar socket, the busbar socket is further optimized and designed, specifically: the insulator 41 comprises a plug-in socket portion 411 shaped with the plug-in port 41a at one end, the plug-in socket portion 411 is integrally formed with a "7" shaped elbow on the lateral side of the plug-in socket portion 411, the "7" shaped elbow comprises a lateral protruding portion 412 protruding on the lateral side wall of the plug-in socket portion 411, and a longitudinal handle portion 413 constituting the second end portion 41b, the longitudinal handle portion 413 extends in the direction opposite to the plug-in port 41a, the second end portion 41b protrudes from the end of the plug-in socket portion 411, so that the second end portion for connecting with the isolating switch device and the plug-in port are arranged in staggered manner, the plug-in socket portion of the busbar socket can be designed in shorter size to avoid interference with the isolating switch device, the longitudinal handle portion 413 of the busbar socket 4 extends to the electric connecting end 2-1 on the top of the isolating switch device 2 and is electrically connected, i.e. the electric connecting portion 422a is electrically connected with the electric connecting end 2-1 on the top of the isolating switch device 2. Moreover, the busbar socket adopts the structural design of the plug-in socket portion and the "7" shaped elbow, the zigzag outer contour of the busbar socket can ensure that the busbar socket has sufficient creepage distance, thereby ensuring the safety and reliability in use. In order to improve the structural strength, the lateral protruding portion 412 and the corner of the plug-in socket portion 411 are formed with a reinforcing rib plate 414.

[0026] The electric connecting piece 422 comprises an integrally formed L-shaped plate 4221, the head end of one arm plate of the L-shaped plate 4221 protrudes from the second end portion 41b to constitute the electric connecting portion 422a, the other arm plate of the L-shaped plate 4221 extends to the position opposite to the plug-in conductive rod 421 and is fixedly connected with the plug-in conductive rod 421, the plug-in conductive rod 421 is perpendicular to the arm plate of the L-shaped plate 4221 corresponding with the plug-in conductive rod 421. The center conductor has the advantages of simple and reliable structure, facilitating convenient and reliable processing and forming of the busbar socket, and convenient installation.

[0027] As a reliable and simple way, the plug-in conductive rod 421 is provided with a bolt hole, the arm plate of the L-shaped plate-shaped piece 4221 is provided with a connecting through hole, and a fixing bolt 4222 is passed through the connecting through hole and fixed on the bolt hole. That is, the plug-in conductive rod and the L-shaped plate-shaped piece are fixedly connected in an integrated manner by using a bolt, and the structure is simple and reliable. Of course, the fixing connection manner of the plug-in conductive rod and the arm plate of the L-shaped plate-shaped piece can adopt other manners in the prior art, such as welding, riveting and the like.

[0028] The normal-pressure switch cabinet can well adapt to the scheme of upper isolation and lower connection, and meets the compact design of the national grid standardization; on one hand, the space at the top of the sealed cabinet body is fully utilized, a step part is formed by recessing the top of the sealed cabinet body backward, a recess cavity corresponding to the step part constitutes an extension in the depth direction of the top space of the operation chamber, the placement of the elastic operating mechanism is facilitated, and thus the compact design of the normal-pressure switch cabinet is met. On the other hand, the busbar socket structure is optimized, and thus the installation and arrangement of the busbar socket are facilitated.

Claims

1. A normal pressure sealed air insulation ring network cabinet, comprising a sealed cabinet body, a switch system and an operating device, the switch system comprising isolating switch devices and vacuum switch devices arranged in layers in the sealed cabinet body, the operating device comprising a spring operating mechanism for operating the vacuum switch devices and an isolating operating mechanism for operating the isolating switch devices, an operating chamber for arranging the operating device being arranged outside a front side plate of the sealed cabinet body, a plurality of expansion installation openings being arranged on lateral side plates of the sealed cabinet body, the expansion installation openings being correspondingly matched with bus bar sockets, the bus bar socket comprising an insulator and a central conductor, the insulator having a second end portion and a plug-in port, the central conductor comprising a plug-in conductive rod corresponding to the plug-in port, the plug-in conductive rod being connected with an electric connecting piece, the electric connecting piece having an electric connecting portion corresponding to the second end portion, the electric connecting portion of the bus bar socket being electrically connected with an electric connecting end at the top of the switch system, characterized in that: The isolator device is arranged above the vacuum switch device, the top of the front side plate of the sealed cabinet body has a step part formed by backward recess, the step part is above the extended installation port, the top space of the operation chamber extends to the recess cavity corresponding to the step part, the output shaft of the elastic operating mechanism is arranged on the step part, a transmission connecting rod extending in the height direction is connected to the output shaft of the elastic operating mechanism, a main shaft driving assembly is arranged at the position of the main shaft of the vacuum switch device, the main shaft driving assembly is connected with the main shaft of the vacuum switch device, and the transmission connecting rod is connected with the main shaft driving assembly.

2. The normal-pressure sealed air-insulated ring main unit according to claim 1, characterized in that: The main shaft driving assembly comprises a mounting frame, a linkage arm, a crank arm and a force reduction arm, the mounting frame is fixed on the front side plate of the sealed cabinet body, the crank arm is installed on the main shaft of the vacuum switch device and can drive the main shaft of the vacuum switch device to rotate, the force reduction arm and the linkage arm are distributed on the two sides of the transmission connecting rod in the transverse direction, one end of the force reduction arm and the linkage arm is hinged to the lower end of the transmission connecting rod through a hinge shaft, the other end of the force reduction arm opposite to the hinged end is pivotally installed on the mounting frame, the other end of the linkage arm opposite to the hinged end is hinged to the swing end of the crank arm, and the output shaft of the elastic operating mechanism is installed with a rocker arm, and the upper end of the transmission connecting rod is hinged to the rocker arm.

3. The normal-pressure sealed air-insulated ring main unit according to claim 1, characterized in that: The insulator comprises a connector part formed with a connector port at one end, and a "7" type crank arm integrally formed on the transverse side of the connector part, the "7" type crank arm comprises a lateral protruding part protruding on the transverse side wall of the connector part, and a longitudinal handle part forming the second end part, the longitudinal handle part extends in the direction opposite to the direction of the connector port, and the second end part protrudes from the end of the connector part, and the longitudinal handle part of the busbar socket extends to the electrical connection end on the top of the isolator device.

4. The normal-pressure sealed air-insulated ring main unit according to claim 3, characterized in that: The electrical connector comprises an integrally formed L-shaped plate part, the head end of one arm plate of the L-shaped plate part protrudes to form an electrical connection part, and the other arm plate of the L-shaped plate part extends to a position opposite to the connector conductive rod and is fixedly connected with the connector conductive rod.

5. The normal-pressure sealed air-insulated ring main unit according to claim 4, characterized in that: The connector conductive rod is provided with a bolt hole, the arm plate of the L-shaped plate part is provided with a connecting through hole, and a fixing bolt passes through the connecting through hole and is fixed on the bolt hole.

6. A sealed cabinet body of a normal-pressure sealed air-insulated ring main unit, comprising a sealed cabinet body constituting a sealed chamber, and an operating chamber constituted by the outside of a front side plate of the sealed cabinet body, characterized in that: The top of the front side plate of the sealed cabinet body has a step part formed by backward recess, the step part is above the extended installation port, and the top space of the operation chamber extends to the recess cavity corresponding to the step part.

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