CN-224217900-U - Drawer type earthing device

CN224217900UCN 224217900 UCN224217900 UCN 224217900UCN-224217900-U

Abstract

The application provides a drawer type grounding device which is applied to a feeder cabinet and comprises a drawer body, a three-phase copper bar, a grounding terminal, a three-phase short circuit type grounding wire, a contact pin and a contact pin, wherein the drawer body can be installed in the cabinet body in a pulling and pushing mode, the three-phase copper bar is located on one side of the drawer body in the length direction, the three-phase copper bar is provided with a first state of being spliced with a bus end and a second state of being separated from the bus end along with pulling and pushing movement of the drawer body, the grounding terminal is electrically connected in the drawer body and is far away from the three-phase copper bar, the three-phase short circuit type grounding wire is fixed in the drawer body and comprises a three-phase connection end and a grounding connection end, the three-phase connection end is electrically connected with the three-phase copper bar, the grounding connection end is electrically connected with the grounding terminal, the contact pin is spliced with the socket end on one side of the drawer body, and the contact pin in the first state is spliced with the socket end, and the contact pin in the second state is separated from the socket end. The drawer type grounding device provided by the application has the advantages of simple structure, convenience in manufacture, strong grounding operation stability and good safety.

Inventors

LIANG XIAOLONG
XIE YIKANG
ZHAO SHAOYING
WANG ZHIYUE
REN GANG
JIN QINGSHAN
LIU HAOMING
DU ZHIJIAN
LI YONGJIE
WANG TAO
ZHAO XUEPENG
JIN LUCHAO

Assignees

国网新源集团有限公司
河北张河湾蓄能发电有限责任公司

Dates

Publication Date: 20260508
Application Date: 20250411

Claims (10)

1. The utility model provides a drawer type earthing device, its characterized in that is applied to feeder cabinet, the cabinet body ground connection setting of feeder cabinet, the internal busbar end that is equipped with the feeder of cabinet, and with the socket end that the cabinet body electricity is connected, drawer type earthing device includes: the drawer body can be arranged in the cabinet body in a drawing and pushing mode; The three-phase copper bar is positioned at one side of the drawer body along the length direction, and is provided with a first state of being spliced with the bus end and a second state of being separated from the bus end along with the pulling and pushing movement of the drawer body; The grounding terminal is electrically connected in the drawer body and is arranged far away from the three-phase copper bar; The three-phase short circuit type grounding wire is fixed in the drawer body and comprises a three-phase connecting end and a grounding connecting end, wherein the three-phase connecting end is electrically connected with the three-phase copper bar, and the grounding connecting end is electrically connected with the grounding terminal; the pin is connected to one side, close to the three-phase copper bar, of the drawer body, the pin in the first state is spliced with the socket end, and the pin in the second state is separated from the socket end; Wherein, drawer body, the cabinet body, the contact pin with the material of socket end is the metal.
2. The drawer-type grounding device of claim 1, wherein the number of pins is two, and the pins are arranged at intervals along the width direction of the drawer body.
3. The drawer-type grounding device of claim 1, wherein the bottom of the drawer body is provided with a plug-in piece extending along the length direction, and the cabinet body is provided with a slot matched with the plug-in piece.
4. The drawer grounding device of claim 1, wherein the grounding terminal is removably connected to the drawer body.
5. The drawer-type grounding device of claim 1, wherein the inner wall of the cabinet is attached with a limit mark.
6. The drawer-type grounding device of claim 1, wherein an adapter plate is arranged on one side of the drawer body away from the three-phase copper bar, and a push-pull rod is arranged on the adapter plate.
7. The drawer type grounding device according to claim 6, wherein the adapter plate is located on the bottom surface of the drawer body and is in rotary connection with the drawer body, an arc-shaped groove is formed in the adapter plate, and a limit post in sliding fit with the arc-shaped groove is arranged in the cabinet body.
8. The drawer grounding device of claim 7, wherein the drawer body is provided with a snap, and the adapter plate is provided with a limiting hole matched with the snap.
9. The drawer grounding device of claim 8, wherein the snap fastener is located on a top surface of the drawer body, and a through hole corresponding to the snap fastener is formed on the drawer body.
10. The drawer grounding device of claim 9, wherein the plurality of limiting holes are distributed around the rotational connection of the adapter plate and the drawer body.

Description

Drawer type earthing device Technical Field The application relates to the technical field of electric power overhaul, in particular to a drawer type grounding device. Background The pumped storage is to pump water to the upper storage reservoir by using the electric energy in the low valley period of the electric load, and then to put the water stored in the upper storage reservoir to the lower storage reservoir for power generation in the peak period of the electric load, which is also called energy storage type power generation. The method can convert the redundant electric energy in the low-load period of the power grid into high-value electric energy in the high-load period of the power grid, is suitable for frequency modulation and phase modulation, can be used for stabilizing the cycle and voltage of the power system, is suitable for accident standby, and can also improve the efficiency of thermal power stations and nuclear power stations in the power system. Because the operation needs of the production field of the pumped storage power station, the feeder cabinet needs to be subjected to power failure maintenance at least once every year, the feeder cabinet needs to be switched from operation to maintenance before maintenance, and a three-phase short-circuit grounding wire is hung and connected on the feeder side of the feeder cabinet to be grounded, so that the field safety is ensured. Because the feeder cabinet is usually narrow and closed in site, the three-phase short-circuit grounding wire is inconvenient to hang, easy to fall off or hang by mistake and the like, and the grounding end of the three-phase short-circuit grounding wire is usually positioned on the incoming line side of the bottom of the feeder cabinet, and the risk of mistakenly touching the electrified part is very easy to occur during operation. Therefore, there is a need for a safer and more reliable grounding device for feeder cabinets. Disclosure of utility model In view of the above, the present application is directed to a drawer-type grounding device for solving the related problems mentioned in the background art. Based on the above purpose, the application provides a drawer type grounding device which is applied to a feeder cabinet, wherein a cabinet body of the feeder cabinet is grounded, a bus end of a feeder is arranged in the cabinet body, and a socket end electrically connected with the cabinet body; the three-phase copper bar is positioned on one side of the drawer body along the length direction, along with the pulling and pushing movement of the drawer body, the three-phase copper bar is provided with a first state in which the three-phase copper bar is inserted into the bus bar end and a second state in which the three-phase copper bar is separated from the bus bar end, the grounding terminal is electrically connected in the drawer body and is arranged far away from the three-phase copper bar, the three-phase short circuit type grounding wire is fixed in the drawer body and comprises a three-phase connecting end and a grounding connecting end, the three-phase connecting end is electrically connected with the three-phase copper bar, the grounding connecting end is electrically connected with the grounding terminal, the contact pin is connected to one side of the drawer body, close to the three-phase copper bar, in the first state, the contact pin is inserted into the socket end, in the second state, and is separated from the socket end, and the drawer body, the contact pin and the socket end are all made of metal. Further, the number of the pins is two, and the pins are arranged at intervals along the width direction of the drawer body. Further, the bottom of the drawer body is provided with an inserting sheet extending along the length direction, and the cabinet body is internally provided with a slot matched with the inserting sheet. Further, the ground terminal is detachably connected with the drawer body. Further, the inner wall of the cabinet body is attached with a limit mark. Further, an adapter plate is arranged on one side, away from the three-phase copper bar, of the drawer body, and a push-pull rod is arranged on the adapter plate. Further, the adapter plate is positioned on the bottom surface of the drawer body and is in rotary connection with the drawer body, an arc-shaped groove is formed in the adapter plate, and a limit column in sliding fit with the arc-shaped groove is arranged in the cabinet body. Further, the drawer body is provided with a snap fastener, and the adapter plate is provided with a limiting hole matched with the snap fastener. Further, the elastic buckle is located on the top surface of the drawer body, and a through hole corresponding to the elastic buckle is formed in the drawer body. Further, the limiting holes are distributed around the rotating connection part of the adapter plate and the drawer body. The drawer type grounding device is applied to a feeder cabinet, a cabinet