A grounding device with vacuum arc protection
By using a vacuum circuit breaker and a driving mechanism in the grounding device, the problem that existing grounding devices are prone to arcing during operation is solved, and a safe and reliable grounding operation is achieved.
Patent Information
- Application Number
- CN202421487942.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-04-04
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The existing grounding devices are prone to arcing during operation, resulting in damage to the device and injury to the operator.
The design of a combination of vacuum circuit breaker and drive mechanism is adopted to avoid arc generation through the arc extinguishing effect of the vacuum circuit breaker, and the synchronous connection and disconnection between the grounding rod and the vacuum circuit breaker is achieved through the drive mechanism.
It effectively avoids the generation of electric arcs, protects the safety of the grounding device and operators, and at the same time realizes the smooth connection and disconnection between the grounding rod and the vacuum circuit breaker.
Smart Images
Figure CN222720677U_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of electric power equipment, in particular to a grounding device. Background Art
[0002] Existing grounding devices basically use a manual operating lever to disconnect or close the grounding rod from the line section; during the operation, arcs are inevitably generated, which not only damage the grounding device but also easily cause injuries to the operator. Summary of the invention
[0003] In order to solve the above technical problems, the purpose of the present invention is to provide a grounding device with vacuum arc protection, including a lightning arrester arranged on a support seat, the upper end of the lightning arrester is connected to the line end, and is characterized in that: the line end is also connected to one end of the vacuum circuit breaker, and the other end of the vacuum circuit breaker is connected to the bottom of the elastic connecting rod, and the end of the elastic connecting rod corresponds to the grounding rod; the bottom of the grounding rod is connected to a driving mechanism, and the head of the grounding rod is overlapped or disconnected with the end of the elastic connecting rod; the driving mechanism includes a bottom connecting rod, and a coaxially rotating pinion and bevel gear are arranged on the bottom connecting rod; the pinion gear is meshed with a large gear, and the large gear rotates coaxially with the vacuum circuit breaker operating lever; the bevel gear is meshed with a radial gear, and the radial gear rotates coaxially with the grounding rod seat.
[0004] The line end is also connected to one end of the discharge electrode, and the other end of the discharge electrode is connected to the mutual inductor.
[0005] The bottom connecting rod is connected to the driving mechanism, and the driving mechanism comprises a steering motor, and the steering motor is connected to the bottom connecting rod through a gearbox.
[0006] An insulator is provided on the surface of the vacuum circuit breaker operating rod.
[0007] The discharge electrode comprises a fixed discharge ball and a movable discharge ball. The movable discharge ball is fixed on a screw rod. The screw rod is screwed on a discharge bottom plate. The screw rod is connected to the output end of a screw rod driving motor.
[0008] The screw drive motor and the operating motor are both connected to the power output end of the transformer.
[0009] The advantages of the present invention are as follows: since the arc extinguishing effect of the vacuum circuit breaker is utilized, when closing or disconnecting the circuit, the grounding rod does not directly contact the line end, but is contacted through the vacuum circuit breaker, so no arc is generated; in addition, the present invention cleverly utilizes the rotation effect of the bottom connecting rod of the driving mechanism to synchronously realize the connection and disconnection of the grounding rod and the vacuum circuit breaker. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 It is a structural schematic diagram of the present invention;
[0011] Figure 2 is a connection diagram of the driving mechanism;
[0012] Figure 3 is a three-dimensional schematic diagram of a driving mechanism;
[0013] Figure 4 Schematic diagram of the discharge electrode structure. DETAILED DESCRIPTION
[0014] The present invention is described in detail below in conjunction with the accompanying drawings. As shown in the figure, the present invention includes a lightning arrester 2 arranged on a support seat 1, the upper end of the lightning arrester 2 is connected to the line end, the line end is also connected to one end of the vacuum circuit breaker 3, and the other end of the vacuum circuit breaker 3 is connected to the bottom of the elastic connecting rod 32, and a groove is arranged at the end of the elastic connecting rod 32, which corresponds to the grounding rod 4; the bottom of the grounding rod 4 is connected to a driving mechanism 5, and the head of the grounding rod is overlapped or disconnected with the end of the elastic connecting rod; the driving mechanism includes a bottom connecting rod 51, and a coaxially rotating pinion 52 and a bevel gear 53 are arranged on the bottom connecting rod 51; the pinion 52 is meshed with a large gear 33, and the large gear 33 rotates coaxially with the vacuum circuit breaker operating rod 31; the bevel gear 53 is meshed with a radial gear 54, and the rotating shaft of the radial gear 54 is connected to the grounding rod seat 55 through a key 56 to ensure coaxial rotation, and the grounding rod seat is fixedly connected to the bottom of the grounding rod, thereby driving the grounding rod to rotate, and realizing the connection or disconnection of the grounding rod and the elastic connecting rod.
[0015] The line end is also connected to one end of the discharge electrode 7 , and the other end of the discharge electrode is connected to the mutual inductor 6 .
[0016] The bottom connecting rod is connected to the driving mechanism, and the driving mechanism is arranged below the supporting seat and close to the ground; the driving mechanism comprises a steering motor, and the steering motor is connected to the bottom connecting rod through a gearbox.
[0017] In order to increase the creepage distance, insulators are installed on the surface of the vacuum circuit breaker operating rod.
[0018] In order to adjust the discharge distance, the present invention discloses a discharge distance adjustment structure; specifically:
[0019] The discharge electrode 7 has a fixed discharge ball 71 and a movable discharge ball 72, the movable discharge ball is fixed on a screw 75, the screw is screwed on a lower discharge bottom plate 74, the lower discharge plate and the upper discharge plate 73 are connected by three discharge insulators 76, and the fixed discharge ball 71 is arranged on the upper discharge plate 73; the screw is connected to the output end of the screw drive motor; the screw is driven to rotate by the screw motor, thereby adjusting the distance between the movable discharge ball and the fixed discharge ball.
[0020] The screw drive motor and the operating motor are both connected to the power output end of the transformer.
[0021] When closing the circuit, the grounding rod of the present invention will first overlap with the end of the elastic connecting rod under the action of the driving mechanism, and then be connected to the line end through the vacuum circuit breaker; when in contact, the vacuum circuit breaker will extinguish the arc; and when disconnecting, the grounding rod will also first overlap with the end of the elastic connecting rod, and after the vacuum circuit breaker is disconnected from the line end, the grounding rod will be disconnected from the elastic connecting rod.
[0022] The overlapping rotation angle of the elastic structure and the grounding rod can be controlled by setting the gear ratio between the small gear and the large gear;
[0023] Since the arc extinguishing effect of the vacuum circuit breaker is utilized, when closing or disconnecting the circuit, the grounding rod does not directly contact the line end, but is contacted through the vacuum circuit breaker, so no arc is generated; in addition, the present invention cleverly utilizes the rotation effect of the bottom connecting rod of the driving mechanism to synchronously realize the connection and disconnection of the grounding rod and the vacuum circuit breaker.
Claims
1. A grounding device with vacuum arc protection, comprising a lightning arrester arranged on a support seat, the upper end of the lightning arrester is connected to the line end, characterized in that: The line end is also connected to one end of the vacuum circuit breaker, and the other end of the vacuum circuit breaker is connected to the bottom of the elastic connecting rod, and the end of the elastic connecting rod corresponds to the grounding rod; the bottom of the grounding rod is connected to the driving mechanism, and the head of the grounding rod is overlapped or disconnected with the end of the elastic connecting rod; the driving mechanism includes a bottom connecting rod, and a coaxially rotating small gear and a bevel gear are arranged on the bottom connecting rod; the small gear is meshed with a large gear, and the large gear rotates coaxially with the vacuum circuit breaker operating rod; the bevel gear is meshed with a radial gear, and the radial gear rotates coaxially with the grounding rod seat.
2. The grounding device with vacuum arc protection according to claim 1, characterized in that: The line end is also connected to one end of the discharge electrode, and the other end of the discharge electrode is connected to the mutual inductor.
3. The grounding device with vacuum arc protection according to claim 1, characterized in that: The bottom connecting rod is connected to the driving mechanism, and the driving mechanism comprises a steering motor, and the steering motor is connected to the bottom connecting rod through a gearbox.
4. The grounding device with vacuum arc protection according to claim 1, characterized in that: An insulator is provided on the surface of the vacuum circuit breaker operating rod.
5. The grounding device with vacuum arc protection according to claim 2, characterized in that: The discharge electrode comprises a fixed discharge ball and a movable discharge ball. The movable discharge ball is fixed on a screw rod. The screw rod is screwed on a discharge bottom plate. The screw rod is connected to the output end of a screw rod driving motor.
6. The grounding device with vacuum arc protection according to claim 2, characterized in that: The screw drive motor and the operating motor are both connected to the power output end of the transformer.