CN211958541U

CN211958541U - Switch cabinet

Info

Publication number: CN211958541U
Application number: CN202020599153.3U
Authority: CN
Inventors: 苏长宝; 井银山; 张惇; 刘晓东; 赵森; 张朋飞; 杨俊伟; 丰远红; 张泽中; 赵邈
Original assignee: Nanyang Power Supply Co of State Grid Henan Electric Power Co Ltd
Current assignee: Nanyang Power Supply Co of State Grid Henan Electric Power Co Ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2020-11-17
Anticipated expiration: 2030-04-21

Abstract

The utility model relates to a switch cabinet, which comprises a breaker panel, an upper contact box valve, a lower contact box valve and a switch vehicle; the circuit breaker panel comprises an upper contact box for connecting a bus and a lower contact box for connecting a cable chamber; the upper contact box valve is used for opening and closing the upper contact box wiring part, the lower contact box valve is used for opening and closing the lower contact box wiring part, and the switch vehicle is used for simultaneously opening or closing the upper contact box valve and the lower contact box valve; the method is characterized in that: the switch car further comprises an upper contact box insulating baffle plate, and the upper contact box insulating baffle plate is vertically arranged at the front end of the switch car; and an overhaul window is arranged at the position of the upper contact box insulating partition plate, which corresponds to the lower contact box. The utility model discloses can carry out safe maintenance operation in static contact position down under the condition that the generating line does not cut off the power supply, avoid causing the large tracts of land to have a power failure because of the generating line stops entirely.

Description

Switch cabinet

Technical Field

The utility model relates to a cubical switchboard, concretely relates to cubical switchboard.

Background

Different faults can occur to accessory primary equipment of the switch cabinet due to various reasons such as product quality, overload and the like, and especially faults such as interphase short circuit, explosion caused by poor quality of a cable head, burnout caused by overheating of a contact surface of a current transformer, explosion of a lightning arrester and the like easily occur in a cable chamber. Due to the limited space of the cable chamber, once the fault occurs, all the primary equipment elements in the cable chamber, including the lower fixed contact and the contact box of the circuit breaker, need to be affected. When the lower static contact and the cable chamber of the switch cabinet are overhauled, the distance between the lower static contact and the upper static contact is too close, and a power failure measure must be taken for the bus, so that the phenomenon that a fault occurs at an interval and the load of a whole bus in a power failure half station must be transferred often occurs, and the power supply reliability is seriously influenced.

Patent document CN203014177U, published in 2013, 6, 19, describes a switch cabinet breaker chamber device, which includes a breaker chamber and a breaker, wherein the breaker chamber is provided with an upper static contact unit, a lower static contact unit, an upper movable door and a lower movable door; the static contact unit comprises a contact box and a static contact, and the static contact is provided with an extending part extending out of the contact box; the valve is provided with an insulating sleeve, the valve can move between a door closing position and a door opening position relative to the breaker chamber, and the insulating sleeve positioned at the door closing position is matched with the contact box and can sleeve the extending part in the contact box; the circuit breaker is connected with a circuit breaker room and can move between an experimental position and a working position, and the movement of the circuit breaker, the movement of the upper valve and the movement of the lower valve can form linkage connection. Because the upper valve and the lower valve of the circuit breaker can only be opened and closed simultaneously, the lower contact box is overhauled, and a bus has to be powered off, thereby causing large-area power failure.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a cubical switchboard, solve the problem that the generating line outage is required when overhauing lower contact box.

In order to solve the technical problems, the following technical scheme can be selected according to the needs:

a switch cabinet comprises a circuit breaker panel, an upper contact box valve, a lower contact box valve and a switch vehicle; the circuit breaker panel comprises an upper contact box for connecting a bus and a lower contact box for connecting a cable chamber; the upper contact box valve is used for opening and closing the upper contact box wiring part, the lower contact box valve is used for opening and closing the lower contact box wiring part, and the switch vehicle is used for simultaneously opening or closing the upper contact box valve and the lower contact box valve; the switch car further comprises an upper contact box insulating baffle plate, and the upper contact box insulating baffle plate is vertically arranged at the front end of the switch car; and an overhaul window is arranged at the position of the upper contact box insulating partition plate, which corresponds to the lower contact box.

Furthermore, the upper contact box insulating partition plate is vertically arranged at the front end of the switch car, and the bottom of the upper contact box insulating partition plate is fixed on the switch car through bolts.

Furthermore, the shape of the upper contact box insulating partition plate is consistent with that of the breaker panel.

Furthermore, the insulating baffle plate of the upper contact box is an epoxy insulating plate.

Furthermore, the heat-resisting grade of the insulating partition plate of the upper contact box is F grade or better than F grade.

Compared with the prior art, the beneficial effects of the utility model are that: the upper contact box insulating partition plate is vertically arranged at the front end of the switch car, when the switch car enters a working position, the upper contact box valve and the lower contact box valve are opened, the upper contact box insulating partition plate and the circuit breaker panel are parallel to each other, and the upper contact box insulating partition plate isolates the circuit breaker panel from an electrified area of the upper contact box; the position of the upper contact box insulating partition plate, which corresponds to the lower contact box, is provided with an overhaul window, the size of the window is compared with the size of the lower contact box valve, when the switch car enters a working position, the upper contact box valve and the lower contact box valve are opened, so that the lower contact box is positioned outside an isolation area of the upper contact box insulating partition plate, and overhaul operation can be carried out.

The bottom of the upper contact box insulating partition plate is fixed on the switch car through bolts and used for reinforcing the upper contact box insulating partition plate.

The shape of the upper contact box insulating partition board is consistent with that of the breaker panel, so that the upper contact box insulating partition board cannot completely isolate the electrified area of the upper contact box due to the fact that the shape of the upper contact box insulating partition board is not standard.

The upper contact box insulating partition plate is an epoxy insulating plate which has excellent insulating property for isolating an electrified region, so that the overhauling process is in a safe environment.

The heat-resistant grade of the upper contact box insulating partition plate is F grade or superior to F grade, so that the upper contact box insulating partition plate cannot change form due to high temperature.

The utility model discloses be different from prior art's beneficial effect is: when the switch vehicle is in a working position, the lower contact box can be safely overhauled under the conditions that the valve of the upper contact box is in an open state and the bus is not powered off.

Drawings

Fig. 1 is a side view of the switch car in a service position.

Fig. 2 is a side view of the switch car in the operating position.

Figure 3 is a front view of the upper contact box insulating barrier with the switchgear in the operating position.

Fig. 4 is a top view of the switching vehicle in the operating position.

The reference numbers indicate that 1-switch vehicle, 2-upper contact box valve, 3-lower contact box valve, 4-upper contact box insulating partition plate, 5-bolt, 6-connecting rod, 7-handcart driver, 8-transmission rod and 9-guide rail.

Detailed Description

The present invention is described below in terms of embodiments with reference to the accompanying drawings to assist those skilled in the art in understanding and realizing the invention. Unless otherwise indicated, the following embodiments and technical terms therein should not be understood to depart from the background of the technical knowledge in the technical field.

Example 1: a switch cabinet comprises a switch car 1, an upper contact box valve 2, a lower contact box valve 3, an upper contact box insulating partition plate 4, bolts 5, a connecting rod 6, a handcart driver 7, a transmission rod 8 and a guide rail 9.

Referring to fig. 3 and 4, the interlocking device is used for opening and closing the upper contact box valve 2 and the lower contact box valve 3 in the moving process of the switch car 1 between the overhaul position and the working position; the interlocking device comprises a connecting rod 6, a handcart driver 7, a transmission rod 8 and a guide rail 9, wherein the handcart driver 7 is located in the middle position of the bottom of the switch vehicle 1, the connecting rod 6 is respectively located on the left side and the right side of the upper contact box valve 2 and the lower contact box valve 3 and is connected with the upper contact box valve 2 and the lower contact box valve 3, the transmission rod 8 is respectively located on the bottom of the connecting rod 6 and is perpendicular to the connecting rod 6, the guide rail 9 is located on the left side and the right side of the bottom surface of the circuit breaker chamber, and the switch vehicle 1 is located on.

Referring to fig. 1, 3 and 4, the switch car 1 is shaken out, the upper contact box valve 2 and the lower contact box valve 3 are opened, the upper contact box insulating partition plate 4 is an epoxy insulating plate, the upper contact box insulating partition plate 4 is vertically arranged at the front end of the switch car 1, the upper contact box insulating partition plate 4 and a circuit breaker panel are parallel to each other, and the electrified regions of the circuit breaker panel and the upper contact box are isolated; the bottom of the upper contact box insulating partition plate 4 is fixed by using a bolt 5 and is used for reinforcing the upper contact box insulating partition plate 4; standardizing the shape of the upper contact box insulating partition plate 4 to ensure that the shape of the upper contact box insulating partition plate 4 is consistent with that of a circuit breaker panel, so that the upper contact box insulating partition plate cannot completely isolate an electrified area of the upper contact box due to the irregular shape; the size of the upper contact box insulating partition plate 4 is standardized, the length of the upper contact box insulating partition plate 4 is equal to that of the connecting rod 6, and the width of the upper contact box insulating partition plate 4 is equal to that of the switch car 1, so that the switch car 1 cannot smoothly enter and exit the breaker chamber due to the fact that the size of the upper contact box insulating partition plate 4 is not standardized; the upper contact box insulating partition plate 4 is provided with a window, the size of the window is compared with the size of the lower contact box valve 3, and the position of the window on the upper contact box insulating partition plate 4 is compared with the position of the lower contact box valve 3 on a circuit breaker panel, so that the position of the lower contact box valve 3 is positioned outside an isolation area of the upper contact box insulating partition plate 4.

Referring to fig. 2, 3 and 4, the switch car 1 is shaken in, and the handcart driver 7 presses the transmission rod 8 to drive the connecting rod 6 connected with the upper contact box valve 2 and the lower contact box valve 3, so that the upper contact box valve 2 and the lower contact box valve 3 are opened; when the switch car 1 is swung to the working position, the upper contact box insulating partition plate 4 vertically arranged at the front end of the switch car 1 is parallel to the circuit breaker panel, the circuit breaker panel and the upper contact box are isolated by the upper contact box insulating partition plate 4, the window arranged on the upper contact box insulating partition plate 4 is positioned at the position when the lower contact box valve 3 is closed, and the lower contact box is not isolated when the upper contact box insulating partition plate 4 isolates the circuit breaker panel from the upper contact box.

The beneficial effects include: the utility model discloses can be under the condition that the generating line does not cut off the power supply, the operation is overhauld to the contact box under the circuit breaker, can avoid having a power failure because of overhauing the large tracts of land that causes.

The present invention has been described in detail with reference to the accompanying drawings and examples. It should be understood that in practice, the invention can not be exhaustively described in all possible embodiments, and the invention concept of the present invention can be illustrated as much as possible by way of example, and those skilled in the art can make experimental changes on the technical features and specific parameters in the above embodiments without departing from the inventive concept of the present invention or without paying creative labor, or the specific embodiments formed by performing conventional replacement on the disclosed technical means by using the prior art in the technical field should belong to the content implicitly disclosed in the present invention.

Claims

1. A switch cabinet comprises a circuit breaker panel, an upper contact box valve, a lower contact box valve and a switch vehicle; the circuit breaker panel comprises an upper contact box for connecting a bus and a lower contact box for connecting a cable chamber; the upper contact box valve is used for opening and closing the upper contact box wiring part, the lower contact box valve is used for opening and closing the lower contact box wiring part, and the switch vehicle is used for simultaneously opening or closing the upper contact box valve and the lower contact box valve; the method is characterized in that: the switch car further comprises an upper contact box insulating baffle plate, and the upper contact box insulating baffle plate is vertically arranged at the front end of the switch car; and an overhaul window is arranged at the position of the upper contact box insulating partition plate, which corresponds to the lower contact box.

2. A switchgear cabinet according to claim 1, characterized in that: the bottom of the insulating partition plate of the upper contact box is fixed on the switch car by bolts.

3. A switchgear cabinet according to claim 1, characterized in that: and the shape of the upper contact box insulating partition plate is consistent with that of the breaker panel.

4. A switchgear cabinet according to claim 1, characterized in that: the insulating baffle plate of the upper contact box is an epoxy insulating plate.

5. A switchgear cabinet according to claim 1, characterized in that: the heat-resisting grade of the insulating baffle plate of the upper contact box is F grade or better than F grade.