CN112436423A

CN112436423A - Handcart equipment for direct-current metal switch equipment

Info

Publication number: CN112436423A
Application number: CN202011406534.6A
Authority: CN
Inventors: 陈俞; 叶仁明; 傅定春; 陈庆祥; 陈晨
Original assignee: Shanghai Pinggao Tianling Switch Co ltd; Pinggao Group Co Ltd; State Grid Corp of China SGCC
Current assignee: Shanghai Pinggao Tianling Switch Co ltd; Pinggao Group Co Ltd; State Grid Corp of China SGCC
Priority date: 2020-12-04
Filing date: 2020-12-04
Publication date: 2021-03-02

Abstract

The invention discloses a handcart device for DC metal switchgear, which is mainly composed of a propulsion mechanism, a main circuit contact arm, a coupling circuit contact arm, a capacitor chamber, a permanent magnet switch, a secondary component compartment, a secondary aerial plug, Roller, etc. In order to ensure the overall size of the switchgear, the present invention needs to consider the main components on the basis of satisfying the functions of current transfer, freewheeling thyristor discharge residual voltage, interphase and fracture safety distance, magnetic blowing and arc extinguishing, etc., confirming capacitors, permanent magnet switches, Dimensions and layout of poles and secondary components, and design of handcart and cabinet shutters and ground knife locking methods. After completing the arrangement of components and determining the shape, the handcart is designed to be interlocked with the cabinet mechanism, and the routing method of the secondary wire is customized to complete the design of the DC ±10kV metal switch handcart.

Description

Handcart equipment for direct-current metal switch equipment

Technical Field

The invention relates to the field of power equipment, in particular to a handcart device for direct-current metal switch equipment.

Background

At present, the domestic electric power industry is also developing flexible direct current transformer substations vigorously, research and development of corresponding direct current equipment is urgent, and a 10kV direct current switch cabinet system is still in a blank period in the current electric industry. The handcart device which mainly has the switching-on and switching-off functions and is carried in the switch equipment is blank. In addition, the existing middle-mounted armored switch cabinet used by the direct-current metal switch cabinet equipment is just required to be maintained and debugged, and is required to be carried by a carrier loader, so that the steps are very complicated.

Disclosure of Invention

The invention aims to solve the technical problem of providing a handcart device for direct-current metal switch equipment, aiming at the blank of the existing direct-current +/-10 kV metal switch equipment and the defects of a middle armored switch cabinet.

The technical problem to be solved by the invention can be realized by the following technical scheme

A hand truck apparatus for a direct current metal switching device, comprising:

a frame;

the middle vertical partition plate is arranged in the middle of the frame and divides the frame into a front half part and a rear half part;

the middle diaphragm plate is arranged in the middle of the rear half part of the frame and divides the rear half part of the frame into a rear upper half part and a rear lower half part, the rear upper half part forms a secondary component compartment, secondary components are installed in the secondary component compartment, and the secondary components are led out through a secondary aviation plug-in arranged at the top of the rear upper half part; a capacitor assembly and a propelling mechanism are mounted on the rear lower half part, the propelling mechanism pushes a grounding knife interlocking mechanism to act for interlocking, and the grounding knife interlocking mechanism is positioned on one side of the rear lower half part of the frame;

the cabinet body valve interlocking push plate is arranged on one side of the front half part of the frame, and the cabinet body valve interlocking push plate is interlocked with the cabinet body after the handcart device is pushed into the cabinet body;

the permanent magnet switch is arranged on the front half part of the frame, and a pole of the permanent magnet switch is connected with the coupling loop contact arm and the main loop contact arm through the primary aviation plug-in;

the idler wheels are arranged at the bottom of the frame so as to facilitate the movement of the frame.

In a preferred embodiment of the invention, the earthing knife interlocking mechanism and the cabinet valve interlocking push plate are positioned on the same side of the vehicle frame.

In a preferred embodiment of the invention, there are two coupling loop contact arms and two main loop contact arms.

Due to the adoption of the technical scheme, the invention develops deep research from four aspects of planning design, equipment development, operation control and protection method, adopts modular design, simplifies equipment operation mode, reduces maintenance difficulty, solves the problem of safe and stable operation of the system, improves system operation efficiency and power supply reliability, and lays a foundation for engineering popularization and application.

The invention is composed of a propelling mechanism, a main loop contact arm, a coupling loop contact arm, a capacitor chamber, a permanent magnet switch, a secondary component compartment, a secondary aerial plug, a roller and the like. In order to ensure the overall size of the switch equipment, the invention needs to consider main components on the basis of meeting the functions of current transfer, residual voltage discharge of a follow current thyristor, phase-to-phase and fracture safe distance, magnetic blow-out arc extinction and the like, confirm the external dimensions and the arrangement modes of a capacitor, a permanent magnet switch, a pole column and secondary components, and design the locking modes of a handcart, a cabinet body valve and a ground knife. And finishing component arrangement, designing the interlocking of the handcart and the cabinet body mechanism after determining the shape, and customizing the wiring mode of the secondary wire so as to finish the design of the direct-current +/-10 kV metal switch handcart.

The handcart device is used for the latest direct-current +/-10 kV metal switch cabinet equipment, adopts a floor type handcart design mode, and reduces the complicated steps of carrying vehicles compared with a built-in armored switch cabinet. The design of module provides convenience for the cubical switchboard at on-the-spot operation and experimental debugging and maintenance, compares in fixed mounting on-the-spot debugging wiring and maintenance difficulty difference, and this design can pull out the cabinet body with the switch at any time, carries out experimental maintenance and debugging. To solve this problem.

Drawings

Fig. 1 is a schematic view of the permanent magnet switch and the pole of the present invention.

FIG. 2 is a schematic diagram of the capacitor assembly of the present invention.

Fig. 3 is a side view of the hand truck apparatus of the present invention.

Fig. 4 is a schematic perspective view of the handcart device of the invention.

Detailed Description

The invention is further described below in conjunction with the appended drawings and detailed description.

Referring to fig. 1 to 4, and particularly to fig. 3 and 4, a handcart device for direct current metal switch equipment is shown, and comprises a frame 10, wherein the frame 10 is made of a profile. A middle vertical partition 11 is fixed to the frame 10 at a middle position thereof, and the middle vertical partition 11 divides the frame 10 into a front half 10a and a rear half 10 b.

A middle bulkhead 12 is fixed to a middle position of the rear half portion of the vehicle body frame 10, and the middle bulkhead 12 partitions the rear half portion 10b of the vehicle body frame 10 into a rear upper half portion 10ba and a rear lower half portion 10 bb. The rear upper half 10ba constitutes a secondary device compartment in which the secondary devices 20 are mounted, these secondary devices 20 being led out through secondary aeronautical inserts 30 arranged on top of the rear upper half 10 ba.

The capacitor assembly 40 and the propelling mechanism 50 are mounted on the rear lower half part 10bb, the propelling mechanism 50 pushes the grounding knife interlocking mechanism 60 to act for interlocking, and the grounding knife interlocking mechanism 60 is positioned on one side of the rear lower half part of the frame 10;

a cabinet body valve interlocking push plate 70 is installed at one side of the front half part of the frame 10, and after the handcart device is pushed into the cabinet body, the cabinet body valve interlocking push plate 70 is interlocked with the cabinet body. The ground knife interlock mechanism 60 and the cabinet shutter interlock push plate 70 are located on the same side of the frame 10.

A permanent magnet switch 80 installed on the front half part 10a of the frame 10, wherein a pole 81 of the permanent magnet switch 80 is respectively connected with two coupling loop contact arms 83 and two main loop contact arms 84 through four primary aviation plug-ins 82; two coupling loop contact arms 83 are located to the left of two main loop contact arms 84.

In order to ensure the overall size of the switch equipment, the invention considers the main components on the basis of meeting the functions of current transfer, residual voltage discharge of a follow current thyristor, phase-to-phase and fracture safe distance, magnetic quenching and the like, confirms the external dimensions and the arrangement mode of the capacitor assembly 40, the permanent magnet switch 80, the pole 81 and the secondary component 20, and designs the locking mode of the handcart, the cabinet body valve and the ground knife, which can be realized without creative labor for technicians in the field.

The invention completes the component arrangement, designs the interlocking of the handcart and the cabinet body mechanism after the shape is determined, and customizes the wiring mode of the secondary wire, thereby completing the design of the direct current +/-10 kV metal switch handcart.

Four rollers 90 are installed at the bottom of the frame 10 to facilitate movement of the frame, so that compared with the existing centrally-installed armored switch cabinet, the complex steps of carrying the vehicle are reduced.

Claims

1. A handcart device for DC metal switchgear, characterized in that, comprising:

frame;

a middle vertical partition plate arranged in the middle position of the frame, the middle vertical partition plate divides the frame into a front half and a rear half;

a middle transverse plate arranged in the middle of the rear half of the frame, the middle transverse plate divides the rear half of the frame into a rear upper half and a rear lower half, the rear upper half Part of the secondary component compartment is formed, and secondary components are installed in the secondary component compartment. These secondary components are drawn out through the secondary aviation plug-ins arranged on the top of the rear upper half; installed in the rear lower half There is a capacitor assembly and a propulsion mechanism, the propulsion mechanism pushes the grounding knife interlocking mechanism to perform interlocking action, and the grounding knife interlocking mechanism is located on one side of the rear lower half of the frame;

a cabinet body shutter interlocking push plate arranged on one side of the front half of the frame, after the handcart device is pushed into the cabinet body, the cabinet body shutter interlocking push plate is interlocked with the cabinet body;

The permanent magnet switch installed on the front half of the frame, the pole post of the permanent magnet switch is connected with the contact arm of the coupling circuit and the contact arm of the main circuit through a primary aviation plug-in;

The rollers are arranged at the bottom of the frame to facilitate the movement of the frame.

2 . The handcart device for DC metal switchgear according to claim 1 , wherein the grounding knife interlocking mechanism and the cabinet shutter interlocking push plate are located on the same side of the vehicle frame. 3 .

3 . The handcart device for DC metal switchgear according to claim 1 , wherein there are two contact arms of the coupling loop and two contact arms of the main loop. 4 .