CN114243469A

CN114243469A - Novel female earthing device that arranges of 10kV high tension switchgear

Info

Publication number: CN114243469A
Application number: CN202111631439.0A
Authority: CN
Inventors: 张宏伟
Original assignee: JINCHANG POWER SUPPLY COMPANY STATE GRID GANSU ELECTRIC POWER CORP
Current assignee: JINCHANG POWER SUPPLY COMPANY STATE GRID GANSU ELECTRIC POWER CORP
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-03-25

Abstract

The invention relates to the technical field of high-voltage switch cabinet protection, in particular to a novel busbar grounding device of a 10kV high-voltage switch cabinet. The wire end clamp is detachably connected to the outer side of the flow guide component; the limiting spring is sleeved outside the wire end clamp; one side of the flow guide component is provided with a binding post, and the grounding wire is connected with the flow guide component through the binding post; and one end of the grounding wire, which is far away from the flow guide component, is provided with a grounding end wire clamp. The novel busbar grounding device for the 10kV high-voltage switch cabinet is good in safety, convenient to carry, simple to operate and low in economic cost.

Description

Novel female earthing device that arranges of 10kV high tension switchgear

Technical Field

The invention relates to the technical field of high-voltage switch cabinet protection, in particular to a novel busbar grounding device of a 10kV high-voltage switch cabinet.

Background

At present, when an operator of a transformer substation performs busbar grounding operation on a 10kV high-voltage switch cabinet, the difficulty of difficult operation generally exists, the main reason is that a busbar is arranged in the high-voltage switch cabinet, and a grounding knife switch is not designed on a busbar to avoid misoperation. Therefore, when a grounding wire needs to be installed on a bus, no proper special grounding wire is available, and grounding is often performed by other methods, and conventional operation methods include three methods: the grounding wire is directly arranged on the bus bar by detaching the top cover of the switch cabinet or exposing the bus bar of the rear cabinet door; carrying out busbar grounding through an indirect method; a special grounding trolley is used.

When the grounding wire is installed in the first method, the potential safety hazard of unauthorized opening of a high-voltage switch cabinet door exists, and the related regulations of electric power safety work regulations (electric parts of power plants and substations) (GB26860-2011) are seriously violated. The second method utilizes other cable heads at intervals to be grounded, and the circuit breaker and the handcart switch at the interval are required to be in the closing position, and the operation mode needs to unlock the anti-misoperation locking device at first, and also seriously violates the relevant regulations of electric power safety work regulations (electric parts of power plants and substations) (GB 26860-2011). The third method utilizes a grounding trolley special for the busbar, and has the problem that a grounding handcart switch is not universal and cannot be installed.

Therefore, a novel busbar grounding device of a 10kV high-voltage switch cabinet needs to be researched urgently.

Disclosure of Invention

The invention aims to provide a novel busbar grounding device of a 10kV high-voltage switch cabinet, which aims to solve the problem of difficult operation commonly existing in the busbar grounding operation of the high-voltage switch cabinet.

In order to achieve the purpose, the invention adopts the following technical scheme:

a novel busbar grounding device of a 10kV high-voltage switch cabinet comprises a wire end clamp, a limiting spring, a flow guide component, a grounding wire and a grounding end clamp, wherein the wire end clamp is detachably connected to the outer side of the flow guide component; the limiting spring is sleeved outside the wire end clamp; one side of the flow guide component is provided with a binding post, and the grounding wire is connected with the flow guide component through the binding post; and one end of the grounding wire, which is far away from the flow guide component, is provided with a grounding end wire clamp.

Furthermore, the wire end clamp comprises a connecting sheet, an annular clamping groove and a fixed spring.

Furthermore, the annular clamping groove comprises a supporting plate, a supporting column and a rectangular clamping groove, the supporting plate is divided into an upper supporting plate and a lower supporting plate, the two supporting plates are connected through the supporting column, and the rectangular clamping groove penetrates through the supporting plate.

Furthermore, the connecting sheet comprises two groups of arc-shaped grooves, lotus contacts, clamping grooves and limiting connecting blocks, wherein the two groups of arc-shaped grooves are arranged on the connecting sheet; the lotus-shaped contact, the clamping groove and the limiting connecting block are positioned on the opposite sides of the arc-shaped groove.

Furthermore, the number of the connecting sheets is 12, every two connecting sheets are in a group and are clamped in the rectangular clamping grooves of the annular clamping groove, then the connecting sheets are fixed by a limiting spring, and the limiting spring is sleeved in the arc-shaped groove when the connecting sheets are used.

Furthermore, the upper part of the flow guide component is provided with a claw clamping groove, and the width of the claw clamping groove is the width of the lotus contact.

Preferably, the grounding end clamp adopts a padlock type grounding pile and a plug-in type grounding pile.

In summary, due to the adoption of the technical scheme, the beneficial technical effects of the invention are as follows:

the utility model provides a novel female earthing device that arranges of 10kV high tension switchgear, the security is good, has solved the long-term difficulty of puzzlement transformer substation 10kV high tension switchgear female arranging ground connection when operating, can effectively ensure operating personnel and maintenance operation personnel personal safety. The power supply system has good social benefit and economic benefit, effectively shortens the power failure time, and ensures reliable power supply for users. Convenient to carry, easy operation, economic cost is low.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic structural diagram of a ring slot of the present invention.

FIG. 3 is a schematic view of the structure of the connecting sheet of the present invention.

Fig. 4 is a schematic structural view of the flow guide member of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

In this embodiment, the novel busbar grounding device for the 10kV high-voltage switch cabinet comprises a wire end clamp 1, a limiting spring 2, a flow guide component 3, a grounding wire 5 and a grounding end clamp 7, wherein the wire end clamp 1 is detachably connected to the outer side of the flow guide component 3; the limiting spring 2 is sleeved outside the wire end clamp 1; a binding post 6 is arranged on one side of the flow guide component 3, and a grounding wire 5 is connected with the flow guide component 3 through the binding post 6; and one end of the grounding wire 5, which is far away from the flow guide component 3, is provided with a grounding terminal clamp 7.

Example 2

In this embodiment, the wire end clamp 1 includes a connecting piece 4, a ring-shaped clamping groove 8 and a fixed spring 9; the annular clamping groove 8 comprises a support plate 8-1, a support column 8-2 and a rectangular clamping groove 8-3, the support plate 8-1 is divided into an upper piece and a lower piece, the two support plates 8-1 are connected through the support column 8-2, and the rectangular clamping groove 8-3 penetrates through the support plate 8-1; the connecting sheet 4 comprises two groups of arc-shaped grooves 4-1, lotus contacts 4-2, clamping grooves 4-3 and limiting connecting blocks 4-4, and the two groups of arc-shaped grooves 4-1 are arranged on the connecting sheet 4; the lotus contact 4-2, the clamping groove 4-3 and the limiting connecting block 4-4 are positioned on the opposite sides of the arc-shaped groove 4-1; the number of the connecting sheets 4 is 12, every two connecting sheets 4 are in a group, every two connecting sheets are in a group, and are clamped in a rectangular clamping groove 8-3 of the annular clamping groove 8, and then the connecting sheets are fixed by a limiting spring 2, and the limiting spring 2 is sleeved in the arc-shaped groove 4-1 when the connecting sheets are used; the upper part of the flow guide component 3 is provided with a claw groove 3-1, and the width of the claw groove 3-1 is the width of the lotus contact.

And the ground terminal clamp 7 adopts a padlock type ground pile or a plug-in type ground pile.

The lead end clamp 1 adopts a lotus contact, and the lead end clamp 1 mainly comprises a connecting sheet 4, an annular clamping groove 8 and a fixed limiting spring 2. Every two connecting sheets 4 are a group, twelve connecting sheets are needed, every two connecting sheets are a group and are clamped in the annular clamping groove 8, and then the two connecting sheets are fixed by the limiting spring 2.

The flow guide component 3 is a middle part for connecting the lotus contact and the grounding wire, the upper end of the flow guide component is fully connected with the lotus contact, and the lower end of the flow guide component is reliably connected with the grounding wire. The claw clamping groove 3-1 is formed in the flow guide component, so that the inner claw of the lotus contact can be clamped in the claw clamping groove 3-1, and the width of the claw clamping groove 3-1 is larger than that of the inner claw, so that the angle and direction can be adjusted when the lotus contact is inserted into the busbar static contact, the one-time insertion success rate is improved, and the time for hanging the ground wire is shortened. The lower surface of the diversion component 3 is provided with a binding post 6 of a grounding wire 5, and a grounding copper wire can be fixed on the diversion component.

The handcart switch can be pulled out from a 10kV high-voltage switch cabinet, and the baffle plate for isolating the electrified part is forbidden to be opened after being closed. After the bus and all the connecting elements are powered off, the baffle is opened and the grounding wire is installed.

The above-described preferred embodiments of the invention are not intended to be limiting, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the invention are intended to be included within the scope of the invention.

Claims

1. The utility model provides a novel female earthing device that arranges of 10kV high tension switchgear which characterized in that: the wire end clamp comprises a wire end clamp (1), a limiting spring (2), a flow guide component (3), a grounding wire (5) and a grounding end clamp (7), wherein the wire end clamp (1) is detachably connected to the outer side of the flow guide component (3); the limiting spring (2) is sleeved outside the wire end clamp (1); one side of the flow guide component (3) is provided with a binding post (6), and the grounding wire (5) is connected with the flow guide component (3) through the binding post (6); and one end of the grounding wire (5) far away from the flow guide component (3) is provided with a grounding end wire clamp (7).

2. The novel busbar grounding device of the 10kV high-voltage switch cabinet according to claim 1, characterized in that: the wire end clamp (1) comprises a connecting sheet (4), an annular clamping groove (8) and a fixed spring (9).

3. The novel busbar grounding device of the 10kV high-voltage switch cabinet according to claim 2, characterized in that: the annular clamping groove (8) comprises a supporting plate (8-1), a supporting column (8-2) and a rectangular clamping groove (8-3), the supporting plate (8-1) is divided into an upper supporting plate and a lower supporting plate, the two supporting plates (8-1) are connected through the supporting column (8-2), and the rectangular clamping groove (8-3) penetrates through the supporting plate (8-1).

4. The novel busbar grounding device of the 10kV high-voltage switch cabinet according to claim 2, characterized in that: the connecting piece (4) comprises arc-shaped grooves (4-1), lotus contacts (4-2), clamping grooves (4-3) and limiting connecting blocks (4-4), and two groups of arc-shaped grooves (4-1) are arranged on the connecting piece (4); the lotus-shaped contact (4-2), the clamping groove (4-3) and the limiting connecting block (4-4) are positioned on the opposite sides of the arc-shaped groove (4-1).

5. The novel busbar grounding device of the 10kV high-voltage switch cabinet according to claim 2, characterized in that: the number of the connecting pieces (4) is 12, every two connecting pieces (4) are in one group, every two connecting pieces are in one group and are clamped in rectangular clamping grooves (8-3) of the annular clamping groove (8), and then the connecting pieces are fixed by the limiting springs (2).

6. The novel busbar grounding device of the 10kV high-voltage switch cabinet according to claim 1, characterized in that: the upper part of the flow guide component (3) is provided with a claw clamping groove (3-1), and the width of the claw clamping groove (3-1) is the width of the lotus contact.

7. The novel busbar grounding device of the 10kV high-voltage switch cabinet according to claim 1, characterized in that: the grounding end clamp (7) adopts a padlock type grounding pile or a plug-in type grounding pile.