CN218867778U

CN218867778U - 10kV handcart-type cubical switchboard with spring pressure relief device

Info

Publication number: CN218867778U
Application number: CN202223122694.5U
Authority: CN
Inventors: 郑一鸣; 杜明磊; 赵磊; 许广健; 刘伟强
Original assignee: Shandong Wendeng Pumped Storage Co ltd; State Grid Xinyuan Co Ltd
Current assignee: Shandong Wendeng Pumped Storage Co ltd; State Grid Xinyuan Co Ltd
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-04-14
Anticipated expiration: 2032-11-23

Abstract

The utility model relates to a 10kV handcart-type cubical switchboard with spring pressure relief device, it has solved among the current pumped storage power station 10kV handcart-type cubical switchboard and has adopted the apron that plastic bolt will be used for the pressure release to close at cabinet body top, only carry out the pressure release to the condition that pressure is far above atmospheric pressure, under the slightly big condition of pressure, be not enough to break through plastic bolt and carry out the pressure release, plastic bolt pops open the back in disorder and splashes and causes the damage to personnel or equipment easily, the technical problem that the apron has been opened can't long-rangely learn, it includes the cabinet body, metal covering plate and spring, the top of the cabinet body is equipped with the opening, the cabinet body is equipped with left side inner wall and right side inner wall, crossbeam fixed connection is between left side inner wall and right side inner wall, the lower extreme and the crossbeam fixed connection of spring, the upper end fixed connection of metal covering plate and spring, metal covering plate is located the opening part. The utility model discloses can be used to 10kV handcart-type cubical switchboard the switch draws the pressure release process that appears arcing, when discharging in-process.

Description

10kV handcart-type cubical switchboard with spring pressure relief device

Technical Field

The utility model relates to a high tension switchgear technical field of pumped storage power station particularly, relates to a 10kV handcart-type cubical switchboard with spring pressure relief device.

Background

The pumped storage power station utilizes the electric power in the power grid during the load valley, pumps water from the lower reservoir to the upper reservoir for storage, and drains water to the hydropower station generating power in the lower reservoir when the power grid is in the peak load.

A pumped storage power station can use a plurality of 10kV handcart type switch cabinets, and the 10kV handcart type switch cabinet mainly comprises a cabinet body, a circuit breaker and a handcart switch. The patent application No. 01910909473.6 and the patent application publication No. CN111525433A disclose a handcart type switch cabinet.

For a 10kV handcart type switch cabinet, if arcing, discharging and the like occur in the switch closing process, great air pressure can be generated, if pressure cannot be released in time, equipment damage can be aggravated, and personal health can be possibly damaged. The apron is installed at the top of the cabinet body to present pressure release mode universal adoption, and one side of this apron is connected on the cabinet body with articulated elements such as hinge, and the another side is to closing on the cabinet body with plastic bolt, refer to patent No. 201220168800.0, and the name is high tension switchgear pressure release's utility model patent, break through after making a concerted effort plastic bolt at atmospheric pressure, the bolt breaks through, and the apron is opened and is formed the opening at cabinet body top, and pressure is released from this opening. However, this approach has technical drawbacks: (1) The pressure relief is only carried out under the condition that the pressure is far higher than the atmospheric pressure, and under the condition that the pressure is slightly higher than the atmospheric pressure, the plastic bolt cannot be broken by the pressure relief device, and the pressure relief cannot be realized. (2) After the plastic bolt is bounced off, the plastic bolt splashes, and if people or equipment are hit, the plastic bolt can cause damage to the people or the equipment to different degrees. (3) After the cover plate is opened, the cover plate can be known to be opened only by observing with eyes on site, and the opening of the cover plate and the pressure relief state can not be known remotely.

Disclosure of Invention

The utility model discloses exactly solve among the current pumped storage power station 10kV handcart-type cubical switchboard and adopt the apron that the plastic bolt will be used for the pressure release to close at cabinet body top, only carry out the pressure release to the condition that pressure is far above atmospheric pressure, under the slightly big condition of pressure, be not enough break through the plastic bolt and carry out the pressure release, the plastic bolt bounces the back in disorder and splashes and causes the damage to personnel or equipment easily, can't long-rangely learn the technical problem that the apron has been opened, the utility model provides an improve the reliability, the 10kV handcart-type cubical switchboard that has spring pressure relief device of security.

The utility model provides a 10kV handcart-type cubical switchboard with spring pressure relief device, including the cabinet body, metal covering plate and spring, the top of the cabinet body is equipped with the opening, and the cabinet body is equipped with left side inner wall and right side inner wall, crossbeam fixed connection between left side inner wall and right side inner wall, the lower extreme and the crossbeam fixed connection of spring, the upper end fixed connection of metal covering plate and spring, metal covering plate are located the opening part.

Preferably, a travel switch is connected to the bottom surface of the metal cover plate.

Preferably, the bottom surface of the metal cover plate is connected with an acceleration sensor.

Preferably, the acceleration sensor is a capacitive acceleration sensor.

The beneficial effects of the utility model are that, improve the security of pressure release, the reliability. The pressure reference range for triggering the pressure relief action is wide, the pressure relief is carried out only under the condition that the pressure is far higher than the atmospheric pressure, and the pressure relief can be realized under the condition that the pressure is slightly higher than the atmospheric pressure. Learn through long-range backstage or control that the apron is opened, carried out the pressure release action. The plastic bolt can not splash in disorder to damage personnel or equipment, after pressure relief is completed, the metal cover plate automatically recovers to the initial state before pressure relief, and the metal cover plate is reused.

Drawings

FIG. 1 is an outline view of a 10kV handcart type switch cabinet with a spring type pressure relief device;

FIG. 2 is a schematic structural diagram of a 10kV handcart type switch cabinet with a spring type pressure relief device;

FIG. 3 is a schematic structural diagram of a 10kV handcart type switch cabinet with a spring type pressure relief device in a pressure relief state;

fig. 4 is a schematic structural diagram of a switch formed on a metal cover plate.

The symbols in the drawings illustrate that:

1. the cabinet body comprises 1-1 parts of a left side inner wall, 1-2 parts of a right side inner wall, 1-3 parts of an opening, 2 parts of a metal cover plate, 3 parts of a cross beam, 4 parts of a spring and 5 parts of a travel switch.

Detailed Description

The present invention will be described in further detail with reference to the following detailed description of the preferred embodiments with reference to the accompanying drawings.

As shown in fig. 1 and 2, the 10kV handcart type switch cabinet with the spring type pressure relief device comprises a cabinet body 1, an opening 1-3 is arranged at the top of the cabinet body 1, a cross beam 3 is welded between a left inner wall 1-1 and a right inner wall 1-2 of the cabinet body 1, the lower end of a spring 4 is fixed on the cross beam 3 by welding or the like, a metal cover plate 2 is fixedly connected with the upper end of the spring 4 by welding or the like, and the metal cover plate 2 is positioned at the opening 1-3.

As shown in fig. 3, when a 10kV handcart type switch cabinet generates a large air pressure in the process of opening and closing the switch if arcing, discharging and the like occur, the metal cover plate 2 is jacked up upwards, the spring 4 is stretched, the opening 1-3 is opened, and the pressure is released from the opening 1-3, so that the safety protection is realized. After the pressure relief is completed, the metal cover plate 2 is displaced downwards to the initial state shown in fig. 1 and 2 under the action of the tensile force of the spring 4, and the opening 1-3 is closed. The safety and the reliability of the pressure relief process are high. The pressure reference range for triggering the pressure relief action is wide, the pressure relief can be realized only under the condition that the pressure is far higher than the atmospheric pressure, the pressure relief can be realized under the condition that the pressure is slightly higher than the atmospheric pressure, and the distance of upward movement of the metal cover plate 2 is larger as the pressure is larger. The problem that in the prior art, the plastic bolt splashes disorderly to damage personnel or equipment can not occur in the pressure relief process. After the pressure relief is finished, the metal cover plate automatically restores to the initial state before the pressure relief, so that preparation is made for the next pressure relief, and the metal cover plate is reused.

The metal cover plate 2 may be made of steel. The spring 4 may be a high-strength spring.

In order to remotely detect the pressure relief action, a travel switch 5 is arranged on the bottom surface of the metal cover plate 2, when the pressure relief action is carried out, the metal cover plate 2 moves upwards, and the travel switch 5 sends a signal to an external controller in a wired or wireless mode, so that whether the pressure relief action occurs or not does not need to be observed on site.

Because the pressure release process time is very short, metal covering plate 2 upwards moves in the twinkling of an eye, so install acceleration sensor at metal covering plate 2's bottom surface and detect more suitably, acceleration sensor sends acceleration signal for external control ware through wired or wireless mode. Further optimization, a capacitive acceleration sensor is adopted, and the capacitive acceleration sensor is less affected by temperature.

A sealing ring may be attached around the metal cover plate 2, which seals a small gap between the edge of the metal cover plate 2 and the opening 1-3.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, which may be modified and varied by those skilled in the art.

Claims

1. The utility model provides a 10kV handcart-type cubical switchboard with spring pressure relief device, includes the cabinet body, its characterized in that, 10kV handcart-type cubical switchboard with spring pressure relief device still includes metal covering plate, crossbeam and spring, the top of the cabinet body is equipped with the opening, the cabinet body is equipped with left side inner wall and right side inner wall, crossbeam fixed connection is between left side inner wall and right side inner wall, the lower extreme and the crossbeam fixed connection of spring, the upper end fixed connection of metal covering plate and spring, metal covering plate are located the opening part.

2. The 10kV handcart type switch cabinet with the spring type pressure relief device according to claim 1, wherein a travel switch is connected to the bottom surface of the metal cover plate.

3. The 10kV handcart type switch cabinet with spring type pressure relief device according to claim 1, wherein an acceleration sensor is connected to the bottom surface of the metal cover plate.

4. The 10kV handcart type switch cabinet with spring type pressure relief device according to claim 3, wherein the acceleration sensor is a capacitive acceleration sensor.