High-voltage switch cabinet reliable in grounding

Abstract

The utility model provides a reliably grounded high-voltage switch cabinet, which comprises a cabinet body, a grounding terminal, a water storage tank, a connecting conductor, a grounding conductor and a resistivity adjusting mechanism, and the resistivity adjusting mechanism comprises an embedded pipe, an electromagnetic valve, a rotating ring body, an actuating rod, a normally open button, a battery pack and a rotation driving mechanism, current on the cabinet body can be led to the ground through a grounding terminal, a connecting conductor and a grounding conductor, safety accidents caused by electric shock of workers are avoided, an embedded pipe is arranged on the bottom face of the water storage tank, a rotating driving mechanism can drive a rotating ring body to rotate, and in the rotating process of the rotating ring body, an actuating rod can trigger a normally-open button, so that the working efficiency is improved. The electromagnetic valve connected with the battery pack is started, water in the water storage tank can be injected into soil, the soil resistivity is reduced, the grounding reliability is improved, the embedded pipe is annularly arranged, and therefore water can be injected into different positions of the soil, and the grounding reliability is further improved.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a high-voltage switchgear with reliable grounding. Background Technology

[0002] With the continuous development of power systems, high-voltage switchgear is widely used in various substations, distribution rooms, and other places, undertaking the important task of power distribution, control, and protection. However, in actual operating environments, its grounding reliability faces many challenges. Among them, the impact of soil characteristics on grounding effect is particularly prominent. In some areas, soil moisture content is significantly affected by seasonal and climatic factors, and dryness is very likely to occur. When the soil is dry, the electrolyte solution between soil particles decreases, causing the soil resistivity to increase significantly. High-voltage switchgear that relies on grounding conductors to conduct fault current to the ground cannot deliver the current to the ground in time, posing a great safety hazard to the high-voltage switchgear and its internal components. However, traditional high-voltage switchgear grounding systems often lack targeted countermeasures. Grounding conductors are usually simply buried in the soil without considering the long-term impact of soil dryness on grounding effect. When the groundwater level drops, there is no rainfall for a long time, or the soil dries out due to high temperature exposure, the grounding resistance increases sharply, the grounding current cannot pass smoothly, and the fault energy cannot be dissipated quickly, greatly increasing the risk of equipment damage and electric shock to personnel. Utility Model Content

[0003] In view of this, this utility model proposes a high-voltage switchgear with reliable grounding, which can inject water into the soil to reduce soil resistivity and improve grounding reliability.

[0004] The technical solution of this utility model is implemented as follows:

[0005] A reliable grounded high-voltage switchgear includes a cabinet, a grounding terminal, a water tank, a connecting conductor, a grounding conductor, and a resistivity adjustment mechanism. The grounding terminal is located on the bottom surface of the cabinet, the top surface of the water tank is connected to the bottom surface of the cabinet, the top end of the connecting conductor is connected to the grounding terminal, and its bottom end passes through the water tank and connects to the grounding conductor, which is located in the soil. The resistivity adjustment mechanism includes an embedded tube, a solenoid valve, a rotating ring, an actuating rod, a normally open button, a battery pack, and a rotary drive mechanism. The embedded tube is embedded in the bottom surface of the water tank and is arranged in a ring. The solenoid valve is located on the embedded tube. The top surface of the rotating ring is rotatably connected to the inner top surface of the water tank. The actuating rod is located on the inner circumference of the rotating ring. The normally open button is arranged in a ring on the inner top surface of the water tank and is located on the movement path of the actuating rod. The battery pack is located inside the cabinet. Each solenoid valve forms a circuit with the battery pack through a single normally open button. The rotary drive mechanism is used to drive the rotating ring to rotate.

[0006] Preferably, the top surface of the water storage tank is provided with a receiving groove, and the grounding terminal is located in the receiving groove.

[0007] Preferably, the rotary drive mechanism includes a waterproof motor, a gear, and a rack. The waterproof motor is embedded in the top surface of the water storage tank, and its output shaft is connected to the gear. The rack is arranged circumferentially along the outer circumferential surface of the rotating ring, and the gear meshes with the rack.

[0008] Preferably, the top surface of the rotating ring is provided with a T-shaped block, the top surface of the water storage tank is provided with a T-shaped ring groove, and the T-shaped block is located in the T-shaped ring groove.

[0009] Preferably, the resistivity adjustment mechanism further includes an electric push rod, which is disposed on the inner circumferential surface of the rotating ring, and its output shaft is connected to the bottom end of the actuating rod.

[0010] Preferably, the resistivity adjustment mechanism further includes a water injection pipe, the bottom end of which is located inside the water storage tank, and the top end of which extends into the side wall of the cabinet. The side wall of the cabinet is provided with a water inlet hole, and the top end of the water injection pipe is connected to the water inlet hole.

[0011] Preferably, it includes a water receiving shell, which is located on the outside of the cabinet and has an open top, with the water inlet located inside the water receiving shell.

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

[0013] ① The grounding terminal at the bottom of the cabinet is connected to the grounding conductor in the soil through a connecting conductor. When the cabinet becomes electrified due to static electricity on the cabinet or a malfunction of the internal electrical equipment, the current can be introduced into the soil to prevent electric shock to the staff and ensure their safety.

[0014] ② Several embedded tubes are installed on the bottom surface of the water storage tank. The rotary drive mechanism can drive the rotating ring to rotate. When the rotating ring rotates, the action rod can trigger different normally open buttons, so that the power of the battery pack is transferred to the solenoid valve. Thus, the water in the water storage tank can be injected into the soil from the embedded block, reducing the soil resistivity and improving the grounding reliability. The embedded tubes are set in a ring shape, so water can be injected into the soil at different locations, further improving the grounding reliability. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1This is a schematic diagram of the structure of a high-voltage switchgear with reliable grounding according to this utility model;

[0017] Figure 2 This is a schematic diagram of the water storage tank of a high-voltage switchgear with reliable grounding according to this utility model;

[0018] In the diagram: 1. Cabinet; 2. Grounding terminal; 3. Water tank; 4. Connecting conductor; 5. Grounding conductor; 6. Embedded tube; 7. Solenoid valve; 8. Rotating ring; 9. Actuating rod; 10. Normally open button; 11. Battery pack; 12. Receiving slot; 13. Waterproof motor; 14. Gear; 15. Rack; 16. T-block; 17. T-ring groove; 18. Electric push rod; 19. Water injection pipe; 20. Water inlet hole; 21. Water receiving shell. Detailed Implementation

[0019] To better understand the technical content of this utility model, a specific embodiment is provided below, and the utility model will be further described in conjunction with the accompanying drawings.

[0020] See Figures 1 to 2 This utility model provides a high-voltage switchgear with reliable grounding, including a cabinet 1, a grounding terminal 2, a water storage tank 3, a connecting conductor 4, a grounding conductor 5, and a resistivity adjustment mechanism. The grounding terminal 2 is located on the bottom surface of the cabinet 1, the top surface of the water storage tank 3 is connected to the bottom surface of the cabinet 1, the top end of the connecting conductor 4 is connected to the grounding terminal 2, and its bottom end passes through the water storage tank 3 and connects to the grounding conductor 5, which is located in the soil. The resistivity adjustment mechanism includes an embedded tube 6, a solenoid valve 7, a rotating ring 8, an actuating rod 9, a normally open button 10, a battery pack 11, and... The rotary drive mechanism includes an embedded tube 6 embedded in the bottom surface of the water tank 3 in a ring shape, a solenoid valve 7 mounted on the embedded tube 6, a rotating ring 8 whose top surface is rotatably connected to the inner top surface of the water tank 3, an actuating rod 9 mounted on the inner circumferential surface of the rotating ring 8, a normally open button 10 arranged in a ring shape on the inner top surface of the water tank 3 and located on the moving path of the actuating rod 9, and a battery pack 11 mounted inside the cabinet 1. Each solenoid valve 7 forms a circuit with the battery pack 11 through a single normally open button 10. The rotary drive mechanism is used to drive the rotating ring 8 to rotate.

[0021] The bottom of the cabinet 1 is equipped with a grounding terminal 2. A grounding conductor 5 is buried underground in the area where the cabinet 1 is installed. The grounding conductor 5 is set vertically. The grounding terminal 2 and the grounding conductor 5 are connected by a connecting conductor 4, which is a grounding wire. When there is static electricity on the cabinet 1 or when it becomes electrified due to a malfunction of the internal electrical equipment, the current on the cabinet 1 can be conducted into the soil through the grounding terminal 2, the connecting conductor 4, and the grounding conductor 5, so as to prevent the surface of the cabinet 1 from becoming electrified and thus prevent workers from touching the cabinet 1 and getting an electric shock.

[0022] A water storage tank 3 is installed on the bottom surface of the cabinet 1. The water storage tank 3 contains water. Several embedded pipes 6 are embedded in a ring on the bottom surface of the water storage tank 3. Solenoid valves 7 are installed on the embedded pipes 6. When the solenoid valves 7 are energized, they can be opened, so that the water in the water storage tank 3 can be injected into the soil through the embedded pipes 6, increasing the soil moisture, reducing the resistivity, and thus improving the grounding reliability. The ring structure of the embedded pipes 6 can allow water to be injected into different locations in the soil, further improving the grounding reliability.

[0023] A rotating ring 8 is installed on the inner top surface of the water storage tank 3. The rotating drive mechanism can drive the rotating ring 8 to rotate. During the rotation, the rod 9 on the inner circumference of the rotating ring 8 can trigger the normally open button 10 arranged in a ring on the inner top surface of the water storage tank 3. Each solenoid valve 7 forms a circuit with the battery pack 11 through the normally open button 10. When one of the normally open buttons 10 is triggered to the closed state, the solenoid valve 7 can receive electrical energy from the battery pack 11 and open. Water in the water storage tank 3 can flow out from the corresponding embedded pipe 6 to realize water injection. By controlling the rotation of the rotating ring 8, different water injection pipes 19 can be opened in sequence to inject water into different positions of the soil and uniformly reduce the resistivity of the soil around the grounding conductor 5.

[0024] Preferably, the top surface of the water storage tank 3 is provided with a receiving groove 12, and the grounding terminal 2 is located in the receiving groove 12.

[0025] Since the grounding terminal 2 is located at the bottom of the cabinet 1, and the water storage tank 3 is also located at the bottom of the cabinet 1, in order to ensure the installation of the grounding terminal 2, a receiving groove 12 is provided on the top surface of the water storage tank 3 so that the grounding terminal 2 can be placed in the receiving groove 12.

[0026] Preferably, the rotary drive mechanism includes a waterproof motor 13, a gear 14, and a rack 15. The waterproof motor 13 is embedded in the top surface of the water storage tank 3, and its output shaft is connected to the gear 14. The rack 15 is arranged circumferentially along the outer circumferential surface of the rotating ring 8, and the gear 14 meshes with the rack 15.

[0027] The waterproof motor 13 can drive the gear 14 to rotate, and the gear 14 drives the rotating ring 8 to rotate through the rack 15, so as to trigger the normally open button 10 in different positions through the actuating rod 9.

[0028] Preferably, a T-shaped block 16 is provided on the top surface of the rotating ring 8, and a T-shaped ring groove 17 is provided on the inner top surface of the water storage tank 3, with the T-shaped block located in the T-shaped ring groove 17.

[0029] When the rotating ring 8 rotates, the T-shaped block 16 can move along the T-shaped ring groove 17 to ensure the stability of the rotation of the rotating ring 8, so that the actuating rod 9 can accurately trigger the normally open button 10.

[0030] Preferably, the resistivity adjustment mechanism further includes an electric push rod 18, which is disposed on the inner circumferential surface of the rotating ring 8, and its output shaft is connected to the bottom end of the actuating rod 9.

[0031] The electric push rod 18 can drive the actuating rod 9 to rise and fall. When the actuating rod 9 falls, its rotation process will not trigger the normally open button 10, so the normally open button 10 at a certain position can be selectively triggered to facilitate targeted water injection.

[0032] Preferably, the resistivity adjustment mechanism further includes a water injection pipe 19, the bottom end of which is located inside the water storage tank 3, and the top end of which extends into the side wall of the cabinet 1. The side wall of the cabinet 1 is provided with a water inlet hole 20, and the top end of the water injection pipe 19 is connected to the water inlet hole 20.

[0033] After water is injected into the water inlet 20, the water can be replenished into the water storage tank 3 through the water injection pipe 19 to ensure that the water storage tank 3 has sufficient water.

[0034] Preferably, it includes a water receiving shell 21, which is located on the outside of the cabinet 1 with an open top, and the water inlet 20 is located inside the water receiving shell 21.

[0035] The water receiving shell 21 forms a sealed structure with the outside of the cabinet 1, with only the top open. When it rains, rainwater can enter the water receiving shell 21 and enter the water injection pipe 19 through the water inlet 20. The rainwater can be injected into the soil, which can reduce costs and improve the utilization rate of water resources.

[0036] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ground-reliable high-voltage switchgear, characterized in that The application relates to a soil resistivity adjusting device, which comprises a cabinet body, a grounding terminal, a water storage tank, a connecting conductor, a grounding conductor and a resistivity adjusting mechanism.

2. A high-voltage switchgear with reliable grounding according to claim 1, characterized in that, The water storage tank top surface is provided with a containing groove, and the grounding terminal is located in the containing groove.

3. A high-voltage switchgear with reliable grounding according to claim 1, characterized in that, The rotating drive mechanism comprises a waterproof motor, a gear and a rack.

4. A high-voltage switchgear with reliable grounding according to claim 1, characterized in that, The rotating ring body top surface is provided with a T-shaped block, and the water storage tank inner top surface is provided with a T-shaped ring groove.

5. A high voltage switchgear with reliable earthing according to claim 1, characterized in that, The resistivity adjusting mechanism further comprises an electric push rod, which is arranged on the rotating ring body inner circumferential surface and has an output shaft connected with the action rod bottom end.

6. A high-voltage switchgear with reliable grounding according to claim 1, characterized in that, The resistivity adjusting mechanism further comprises a water injection pipe, which has a bottom end located in the water storage tank and a top end extending into the cabinet side wall.

7. A high-voltage switchgear with reliable earthing according to claim 6, characterized in that The cabinet side wall is provided with a water inlet hole, and the water injection pipe top end communicates with the water inlet hole. The application further comprises a water receiving shell, which is arranged outside the cabinet body and has an open top.

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