Novel tool for interval electricity testing of 35kV switch

Abstract

The utility model discloses a novel tool for interval electricity testing of a 35kV switch, which comprises a tool rod body and a tool head body, the lower end of the tool head body is provided with a connecting sleeve, the connecting sleeve is fixedly connected with the tool head body, the connecting sleeve is in threaded connection with one end of the tool rod body, the tool head body comprises an insulating tool head and a flexible metal corrugated rod, and the insulating tool head is fixedly connected with the flexible metal corrugated rod. One end of the flexible metal corrugated rod is fixedly connected with the insulating tool head, a rubber sleeve is arranged outside the flexible metal corrugated rod, and the rubber sleeve, the insulating tool head, the flexible metal corrugated rod and the connecting sleeve are connected into a whole. The special tool is simple in structure and can be well connected with a switch contact baffle, the switch contact baffle is lifted up for electricity testing, an electricity testing worker does not need to drill into the switch cabinet to operate, and intrinsic safety of interval electricity testing of the 35kV switch cabinet is achieved through the special tool.

Description

Technical Field

[0001] This utility model relates to the field of switchgear interval voltage testing technology, specifically a novel tool for 35kV switchgear interval voltage testing. Background Technology

[0002] 35kV switchgear is a crucial piece of equipment in power systems, primarily used in distribution systems, power generation systems, and substations. It enables the connection and disconnection of power supplies and provides control and protection for electrical equipment. It typically consists of two main parts: the cabinet and the circuit breaker. It provides functions such as overhead line entry / exit, cable line entry / exit, and busbar connection. The cabinet comprises the housing, electrical components, various mechanisms, secondary terminals, and wiring. Interval voltage testing refers to the voltage testing operation performed within a specific interval or area, usually used to ensure the safe condition of power equipment or lines before maintenance, repair, or operation. In the power industry, voltage testing is a vital step, helping workers confirm whether equipment or lines are energized, thereby preventing electric shock accidents.

[0003] Existing technologies disclose several patents related to switchgear compartment voltage testing. Among them, utility model patent CN213484347U discloses an auxiliary device for switchgear voltage testing that eliminates the need for manually pushing open a baffle. This device includes a support rod with symmetrically distributed insulating support plates at both ends. An insulating push rod is positioned between the rear of the insulating support plates, and a locking mechanism at the front of the insulating support plates accommodates the switch pins of the switchgear contact box baffle. This solves the problem of the significant danger posed by pushing the baffle deep into the switchgear's cab compartment, making voltage testing simpler, more convenient, and safer. However, for voltage testing of 35kV switchgear compartments, the switch contact baffle requires the tester to crawl inside and manually operate a linkage to raise the baffle for voltage testing, posing a risk of electric shock and failing to meet the required specifications. Utility Model Content

[0004] The purpose of this utility model is to provide a new tool for voltage testing of 35kV switchgear bays, in order to solve the problem mentioned in the background art that when performing voltage testing operations on 35kV switchgear bays, the voltage tester needs to crawl inside the switch contact baffle and manually operate the linkage to raise the switch contact baffle for voltage testing, which poses a risk of electric shock and cannot meet the usage requirements.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a novel tool for voltage testing of a 35kV switch bay, comprising a tool rod and a tool head, wherein a connecting sleeve is provided at the lower end of the tool head and the connecting sleeve is fixedly connected to the tool head, and the connecting sleeve is threadedly connected to one end of the tool rod. The tool head includes an insulating tool head and a flexible metal corrugated rod, the flexible metal corrugated rod being fixedly connected to the insulating tool head, and a rubber sleeve is provided on the outer side of the flexible metal corrugated rod, the rubber sleeve being integrally connected to the insulating tool head, the flexible metal corrugated rod, and the connecting sleeve.

[0006] Preferably, the outer wall of the insulating tool head is provided with insulating tape, which is adhered to and wrapped around the outside of the insulating tool head.

[0007] Preferably, the tool rod body includes a hollow tube and an insulating sleeve. The insulating sleeve is sleeved on the outside of the hollow tube and is integrally connected to the hollow tube. A connecting ring is provided at either end of the hollow tube and is fixedly connected to the hollow tube. The connecting ring and the connecting sleeve are connected by threads.

[0008] Preferably, the hollow tube has a threaded groove on the inner wall of the side opposite to the connecting ring, and the tool rod has a hand handle at the end opposite to the insulating tool head, and the hand handle is threadedly connected to the tool rod.

[0009] Preferably, a battery switch assembly is provided inside the hand grip, and the battery switch assembly is integrated with the hand grip. A mounting plate is provided on the outside of one end of the hollow tube close to the connecting ring. The mounting plate is fixedly connected to the tool rod body. An LED light is provided on the mounting plate, and the LED light is fixedly connected to the mounting plate. A power cord is provided inside the hollow tube, and the power cord is electrically connected to the LED light and the battery switch assembly.

[0010] Preferably, each end of the power cord is provided with a connector, and the connector is integrated with the power cord, with the connectors at both ends of the power cord being provided accordingly.

[0011] Preferably, a plurality of strip-shaped reinforcing ribs are provided between the hollow tube and the insulating sleeve, and the strip-shaped reinforcing ribs are equidistantly arranged on the outer wall of the hollow tube, and the strip-shaped reinforcing ribs are fixedly connected to the hollow tube.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] (1) The utility model device is designed with a tool rod body, a tool head body, a connecting sleeve, a hand handle and a flexible metal corrugated rod. The connecting sleeve connects the tool head body to the tool rod body, and the hand handle connects to the tool rod body. The voltage tester holds the hand handle outside the switch cabinet and contacts the insulated tool head with the switch contact baffle. The tool rod body applies a pushing and pulling force to the insulated tool head. Under the action of the pushing and pulling force, the switch contact baffle is raised to perform voltage testing. There is no need to crawl into the switch cabinet to operate. The flexible metal corrugated rod will deform under the force, changing the orientation angle of the insulated tool head, which is convenient to contact the switch contact baffle in different positions and states, and better perform interval voltage testing.

[0014] (2) The utility model device, through the setting of hollow tube, threaded groove and connecting ring, the connecting ring is aligned with the threaded groove and connected to another hollow tube, which can quickly assemble and splice the two hollow tubes, increase the length of the tool rod, meet the voltage testing requirements of switch contact baffles at different heights, and improve the use effect of the tool.

[0015] (3) The utility model device is equipped with LED lights, power cords, connectors and battery switch components. The battery switch components control the LED lights to turn on and off. When used in a dim environment, the LED lights are lit to increase the brightness, making it easier for the testers to raise the switch contact baffle for testing. The connectors are assembled and spliced ​​in hollow tubes, which can also increase the length of the power cord and ensure the normal use of the lighting mechanism. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a structural diagram of the tool head body of this utility model;

[0018] Figure 3 This is a structural diagram of the tool rod of this utility model;

[0019] Figure 4 This is a diagram showing the connection between the hand grip and the tool handle of this utility model.

[0020] In the diagram: 1. Tool rod body; 2. Tool head body; 3. Mounting plate; 4. LED light; 5. Hand grip; 6. Connecting sleeve; 7. Insulated tool head; 8. Flexible metal corrugated rod; 9. Insulating tape; 10. Rubber sleeve; 11. Hollow tube; 12. Strip reinforcing rib; 13. Insulating sleeve; 14. Threaded groove; 15. Connecting ring; 16. Power cord; 17. Connector; 18. Battery switch assembly. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figure 1-4 This utility model provides an embodiment of a novel tool for testing voltage in a 35kV switch bay, comprising a tool rod 1 and a tool head 2. A connecting sleeve 6 is provided at the lower end of the tool head 2, and the connecting sleeve 6 is fixedly connected to the tool head 2. The connecting sleeve 6 is threadedly connected to one end of the tool rod 1. The tool head 2 includes an insulating tool head 7 and a flexible corrugated metal rod 8, and one end of the flexible corrugated metal rod 8 is fixedly connected to the insulating tool head 7. A rubber sleeve 10 is provided on the outside of the flexible corrugated metal rod 8, and the rubber sleeve 10 is integrally connected to the insulating tool head 7, the flexible corrugated metal rod 8, and the connecting sleeve 6. Insulating tape 9 is provided on the outside of the insulating tool head 7, and the insulating tape 9 is wrapped and adhered to the outside of the insulating tool head 7. A hand grip 5 is provided at the other end of the tool rod 1, and the hand grip 5 is threadedly connected to the tool rod 1.

[0023] In use: When performing voltage testing on a 35kV switchgear compartment, the voltage tester holds the handle 5 from outside the switchgear and brings the insulating tool head 7 into contact with the switch contact baffle. The tool rod 1 applies a pushing and pulling force to the insulating tool head 7, which raises the switch contact baffle for voltage testing. There is no need to crawl inside the switchgear to operate. Applying force to the flexible metal corrugated rod 8 can deform it and change the orientation angle of the insulating tool head 7, making it easier to contact the switch contact baffle in different positions and thus better performing compartment voltage testing.

[0024] Please see Figure 1 and Figure 3 The tool body 1 includes a hollow tube 11 and an insulating sleeve 13. The insulating sleeve 13 is disposed on the outside of the hollow tube 11 and is integrally connected to the hollow tube 11. A connecting ring 15 is provided at one end of the hollow tube 11 and is fixedly connected to the hollow tube 11. A threaded groove 14 is provided on the inner wall of the other end of the hollow tube 11 and is correspondingly provided to the connecting ring 15. A strip reinforcing rib 12 is provided between the hollow tube 11 and the insulating sleeve 13. Six strip reinforcing ribs 12 are provided and are equidistantly arranged on the outside of the hollow tube 11. The strip reinforcing ribs 12 are fixedly connected to the hollow tube 11. By aligning the connecting ring 15 with the threaded groove 14 and connecting it to another hollow tube 11, two hollow tubes 11 can be quickly assembled and spliced, increasing the length of the tool body 1. This can meet the voltage testing requirements of switch contact baffles at different heights and improve the tool's usability.

[0025] Please see Figure 1 and Figure 4The handle 5 houses a battery switch assembly 18, which is integrated with the handle 5. A mounting plate 3 is located on the exterior of one end of the tool rod 1 and is fixedly connected to the tool rod 1. An LED light 4 is mounted on the mounting plate 3 and is also fixedly connected to it. A power cord 16 is located inside the hollow tube 11 and is electrically connected to the LED light 4 and the battery switch assembly 18. Connectors 17 are located at both ends of the power cord 16 and are integrated with it. The connectors 17 at both ends of the power cord 16 are correspondingly positioned. The battery switch assembly 18 controls the LED light 4 to turn on and off. In dim environments, turning on the LED light 4 increases brightness, making it easier for voltage testers to raise the switch contact baffle for voltage testing. The connectors 17, assembled and spliced ​​within the hollow tube 11, also increase the length of the power cord 16, ensuring the normal operation of the lighting mechanism.

[0026] Working principle: When performing voltage testing on a 35kV switchgear compartment, the operator holds the handle 5 from outside the switchgear and brings the insulating tool head 7 into contact with the switch contact baffle. A pushing or pulling force is applied to the insulating tool head 7 via the tool rod 1, raising the switch contact baffle for voltage testing. This eliminates the need to crawl inside the switchgear. Applying force to the flexible corrugated metal rod 8 causes deformation, changing the orientation of the insulating tool head 7 and facilitating contact with switch contact baffles at different positions, thus improving interval voltage testing. The connecting ring 15 aligns with the threaded groove 14 and connects to another hollow tube 11, allowing for quick assembly and splicing of the two hollow tubes 11. This increases the length of the tool rod 1, meeting the voltage testing needs of switch contact baffles at different heights. The battery switch assembly 18 controls the LED light 4; in dim environments, lighting the LED light 4 increases brightness, making it easier for the operator to raise the switch contact baffle for voltage testing and improving the tool's effectiveness.

[0027] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel tool for voltage testing of 35kV switch bays, characterized in that: The tool includes a tool rod body (1) and a tool head body (2). The lower end of the tool head body (2) is provided with a connecting sleeve (6), and the connecting sleeve (6) is fixedly connected to the tool head body (2). The connecting sleeve (6) is threadedly connected to one end of the tool rod body (1). The tool head body (2) includes an insulating tool head (7) and a flexible metal corrugated rod (8). The flexible metal corrugated rod (8) is fixedly connected to the insulating tool head (7). A rubber sleeve (10) is provided on the outside of the flexible metal corrugated rod (8). The rubber sleeve (10) is connected to the insulating tool head (7), the flexible metal corrugated rod (8), and the connecting sleeve (6) as a whole.

2. The novel tool for voltage testing of a 35kV switch bay according to claim 1, characterized in that: The outer wall of the insulating tool head (7) is provided with insulating tape (9), which is attached and wrapped around the outside of the insulating tool head (7).

3. A novel tool for voltage testing of a 35kV switch bay according to claim 1, characterized in that: The tool rod (1) includes a hollow tube (11) and an insulating sleeve (13). The insulating sleeve (13) is sleeved on the outside of the hollow tube (11) and is connected to the hollow tube (11) as a whole. A connecting ring (15) is provided at either end of the hollow tube (11) and is fixedly connected to the hollow tube (11). The connecting ring (15) is connected to the connecting sleeve (6) by a thread.

4. A novel tool for voltage testing of a 35kV switch bay according to claim 3, characterized in that: The hollow tube (11) has a threaded groove (14) on the inner wall of the side away from the connecting ring (15), and the tool rod (1) is provided with a hand handle (5) at the end away from the insulating tool head (7), and the hand handle (5) is threadedly connected to the tool rod (1).

5. A novel tool for voltage testing of a 35kV switch bay according to claim 4, characterized in that: The handgrip (5) is equipped with a battery switch assembly (18), and the battery switch assembly (18) is connected to the handgrip (5) as a whole. The hollow tube (11) is equipped with a mounting plate (3) at one end close to the connecting ring (15). The mounting plate (3) is fixedly connected to the tool rod (1). The mounting plate (3) is equipped with an LED light (4), and the LED light (4) is fixedly connected to the mounting plate (3). The hollow tube (11) is equipped with a power cord (16), and the power cord (16) is electrically connected to the LED light (4) and the battery switch assembly (18).

6. A novel tool for voltage testing of a 35kV switch bay according to claim 5, characterized in that: Both ends of the power cord (16) are provided with connectors (17), and the connectors (17) are connected to the power cord (16) as one unit. The connectors (17) at both ends of the power cord (16) are provided accordingly.

7. A novel tool for voltage testing of a 35kV switch bay according to claim 3, characterized in that: A plurality of strip reinforcing ribs (12) are provided between the hollow tube (11) and the insulating sleeve (13), and the strip reinforcing ribs (12) are provided at equal intervals on the outer wall of the hollow tube (11), and the strip reinforcing ribs (12) are fixedly connected to the hollow tube (11).

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