Grounding device for processing motor-pumped well voltage abnormity and monitoring assembly
By designing the conductive tube and expansion sleeve structure, effective contact between the grounding electrode and the ground is achieved, solving the problem of poor conductivity of the grounding device and enhancing the voltage stability and safety of the well.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-26
- Publication Date
- 2026-03-27
AI Technical Summary
In existing grounding systems, the grounding electrode cannot make effective contact with the ground, affecting conductivity and causing voltage instability.
The system employs a conductive tube and expansion sleeve structure. A support sleeve is installed in the middle of the conductive tube, and a conductive plate is on the expansion sleeve. By pushing the assembly, the expansion sleeve is tightened against the inner wall of the pit to achieve effective contact. The distribution box is equipped with a terminal block and monitoring components to monitor the current and alarm or disconnect the circuit in case of a fault.
It improves the conductivity of the grounding device, ensures voltage stability, and enhances the safety and reliability of well operation.
Smart Images
Figure CN121748831A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of well grounding technology, specifically relating to a grounding device and monitoring components for handling abnormal well voltage. Background Technology
[0002] In recent years, agriculture has become an increasingly important development direction, especially the construction of high-standard farmland, which has become a key focus in agriculture. A crucial element in this development is the establishment of an efficient and water-saving irrigation and drainage system. However, due to issues such as funding, equipment, and technology, most counties and districts are unable to establish such systems. They still rely on a single well to meet the water needs of tens to hundreds of acres of farmland, using flood irrigation. To ensure the proper functioning of the power lines in the well area, grounding devices are used to guarantee stable voltage operation and improve the user's electricity experience.
[0003] Current grounding systems typically require burying a grounding electrode beneath the ground and connecting the grounding line or neutral wire to the electrode. When the three phases are unbalanced, current flows through the neutral wire, redistributing the current to the unbalanced phases and achieving voltage balance. To ensure effective conductivity of the grounding electrode, a resistance-reducing agent is usually filled between the electrode and the ground. However, this agent is significantly affected by natural environmental factors such as rainwater. Therefore, ensuring the grounding electrode is in full contact with the ground is crucial for reducing resistance between them. Currently, most grounding electrodes are directly installed inside the ground using conductive rods, making it difficult to adjust the contact ratio between the electrode and the ground, thus affecting the conductivity of the grounding system. Summary of the Invention
[0004] This invention provides a grounding device and monitoring component for handling abnormal well voltage, aiming to solve the problem in the prior art where the grounding body inside the grounding device cannot effectively contact the ground, thus affecting the conductivity.
[0005] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a grounding device for handling abnormal well voltage, comprising: A conductive tube, wherein a support sleeve with an outer diameter larger than that of the conductive tube is fixedly installed in the middle part of the conductive tube; An expansion sleeve is slidably disposed on the outside of the conductive tube along the length direction of the conductive tube. The expansion sleeve includes multiple conductive plates, which are arranged sequentially along the circumference of the conductive tube. The expansion sleeve is located above the support sleeve. The top of the support sleeve is provided with a chamfer to facilitate the expansion sleeve sliding into the support sleeve. A pushing component is disposed between the conductive tube and the expansion sleeve, for pushing the expansion sleeve to move onto the support sleeve.
[0006] In one possible implementation, the conductive plate has an arc-shaped structure, and a guide rib protrudes from one side of the conductive tube along the circumference of the conductive plate, while a guide groove for accommodating the guide rib is recessed on the other side.
[0007] In one possible implementation, both the guide rib and the guide groove are arc-shaped structures coaxial with the conductive plate.
[0008] In one possible implementation, the pushing component includes: The pusher plate is fitted onto the outside of the conductive tube and is located above the expansion sleeve; A push rod is slidably disposed inside the conductive tube, and a crossbar is fixedly installed on the push rod. The crossbar passes through the side wall of the conductive tube and is fixedly connected to the push plate.
[0009] In one possible implementation, the push rod can slide into the interior of the conductive tube, and the top end of the conductive tube is threadedly connected to a lead screw for pushing the push rod downward.
[0010] The solution shown in this application embodiment, compared with the prior art, involves providing a conductive tube with a support sleeve fixedly installed in the middle of the conductive tube. Multiple support sleeves are arranged sequentially and at intervals along the conductive tube in a vertical direction. An expansion sleeve is installed above each support sleeve, comprising multiple conductive plates arranged sequentially along the circumference, the conductive plates having an arc-shaped structure. When the expansion sleeve is on the conductive tube, the multiple conductive plates are arranged adjacent to each other. When the expansion sleeve moves onto the support sleeve, the multiple conductive plates move outward and are pressed between the inner wall of the pit and the support sleeve, thereby tightening the expansion sleeve inside the pit.
[0011] In the construction of the grounding device, this application allows for the initial drilling of holes in the ground to create a foundation pit for installing the conductive pipe. As the conductive pipe is lowered into the pit, expansion sleeves are sequentially installed onto it. The pit's inner wall acts as a limiting element, preventing the expansion sleeves from detaching from the conductive pipe. After the conductive pipe is fully installed in the pit, a pushing assembly pushes the expansion sleeves onto a support sleeve. The support sleeve guides the multiple conductive plates on the expansion sleeves, enabling effective contact between the expansion sleeves and the pit's inner wall. The expansion sleeves abut against the support sleeve, thus achieving an effective connection between the conductive pipe and the pit, thereby improving the grounding device's conductivity.
[0012] In conjunction with the first aspect, in one possible implementation, the technical solution adopted by the present invention is: to provide a monitoring component for handling abnormal well voltage, comprising: Distribution box; A terminal block is installed inside the distribution box, and the top of the terminal block is provided with a wiring groove for connecting to the well. A connector is mounted on the terminal block and is electrically connected to the conductive tube. The connector is provided with a first plug rod and a second plug rod. The first plug rod and the second plug rod are respectively used to be inserted into the terminal block to communicate with the terminal slot and to be inserted into the terminal head to communicate with the conductive tube. The connector is provided with a monitoring device for monitoring current.
[0013] In one possible implementation, the terminal block is provided with a plug hole for mounting the first plug rod, a conductive ball communicating with the wiring groove is fixedly disposed inside the plug hole, and an elastic element for pushing the conductive ball to move outward is disposed inside the plug hole, and a limiting part for hanging onto the terminal head is bent at the end of the second plug rod.
[0014] In one possible implementation, the first plug rod and the second plug rod are set at an acute angle, and the terminal block is provided with a guide surface for abutting the second plug rod. When the second plug rod is connected to the terminal block, the second plug rod abuts against the guide surface.
[0015] In one possible implementation, the connector includes: An insulating tube is fixedly installed on the terminal block; A conductive post is installed on the insulating tube and is electrically connected to the conductive tube. The position of the conductive post on the insulating tube has a degree of freedom to be adjusted in the vertical direction. The limiting part on the second plug rod is used to abut against the conductive post.
[0016] In one possible implementation, a limiting rod for limiting the limiting portion is slidably disposed on the top of the conductive post, the limiting rod is electrically connected to the conductive post, and a spring-loaded member for pushing the limiting rod to move upward is disposed on the conductive post.
[0017] The solution shown in this application embodiment, compared with the prior art, includes a distribution box installed on the ground, with all control terminals in the well mounted on the distribution box. A terminal block is fixedly installed inside the distribution box, and a wiring groove is provided on the top of the terminal block. Cables requiring grounding can be connected to the wiring groove, and grounding is achieved through connectors and terminals.
[0018] In this application, a terminal block is provided on the terminal block, and the terminal block is electrically connected to the terminal slot via a connector. The connector is provided with a first plug-in rod and a second plug-in rod. The first and second plug-in rods are respectively inserted into the terminal slot and the terminal block to achieve the electrical connection between the terminal slot and the terminal block. Furthermore, a current transformer is provided on the connector for monitoring the current. This monitoring device monitors the current on the grounding wire. During normal operation, the three-phase currents are balanced, and theoretically, the current flowing through the neutral point grounding wire is zero or a very small current. When a ground fault occurs in any phase of the system, the fault current flows into the ground through the grounding point and then back to the system neutral point through the grounding wire. At this time, the monitoring device installed on the connector detects this suddenly increased fault current, reduces the current signal proportionally, and then transmits it to the relay protection device. When the relay protection device determines that the current exceeds the set value, it will immediately issue an alarm signal or directly command the circuit breaker to trip and disconnect the faulty circuit, thereby preventing damage to various components in the well, ensuring personal safety, and thus improving the safety during the use of the well. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the grounding device for handling abnormal well voltage provided in an embodiment of the present invention; Figure 2 A schematic diagram of the installation structure of the pushing component provided in an embodiment of the present invention; Figure 3 A schematic diagram of the installation structure of the expansion sleeve provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the monitoring component for handling abnormal well voltage provided in an embodiment of the present invention; Figure 5 This is a side sectional view of the terminal block provided in an embodiment of the present invention.
[0020] Explanation of reference numerals in the attached figures: 1. Conductive tube; 2. Support sleeve; 3. Expansion sleeve; 31. Conductive plate; 311. Guide rib; 4. Pushing assembly; 41. Pushing piece; 42. Pushing rod; 43. Crossbar; 5. Lead screw; 6. Distribution box; 7. Terminal block; 71. Conductive ball; 72. Elastic element; 8. Terminal head; 81. Insulating tube; 82. Conductive post; 821. Limiting rod; 822. Rebound element; 9. Connecting element; 91. First plug-in rod; 921. Limiting part; 92. Second plug-in rod; 10. Monitoring element. Detailed Implementation
[0021] To make the technical problems to be solved, the technical solutions, and the beneficial effects of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.
[0022] Specific embodiments are merely illustrative of the invention and are not intended to limit the invention. It should be noted that when an element is referred to as "fixed to" or "set on" another element, it can be directly or indirectly on that other element. When an element is referred to as "connected to" another element, it can be directly or indirectly connected to that other element. It should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the invention, "a plurality of" means two or more, unless otherwise explicitly specified.
[0023] Please refer to the following: Figures 1 to 5 The grounding device for handling abnormal well voltage provided by the present invention will now be described. The grounding device for handling abnormal well voltage includes a conductive pipe 1, a support sleeve 2, an expansion sleeve 3, and a pushing component 4. A support sleeve 2 with an outer diameter larger than that of the conductive pipe 1 is fixedly installed in the middle of the conductive pipe 1. The expansion sleeve 3 is slidably disposed on the outside of the conductive pipe 1 along its length. The expansion sleeve 3 includes multiple conductive plates 31 arranged sequentially along the circumference of the conductive pipe 1, and the expansion sleeve 3 is located above the support sleeve 2. The top of the support sleeve 2 has a chamfer to facilitate the expansion sleeve 3 sliding onto the support sleeve 2. The pushing component 4 is disposed between the conductive pipe 1 and the expansion sleeve 3, and is used to push the expansion sleeve 3 onto the support sleeve 2.
[0024] The grounding device for handling abnormal well voltage provided in this embodiment, compared with the prior art, features a conductive pipe 1 with a support sleeve 2 fixedly installed in the middle of the conductive pipe 1. Multiple support sleeves 2 are arranged vertically and spaced apart on the conductive pipe 1. An expansion sleeve 3 is installed above each support sleeve 2, comprising multiple conductive plates 31 arranged circumferentially. The conductive plates 31 have an arc-shaped structure. When the expansion sleeve 3 is on the conductive pipe 1, the multiple conductive plates 31 are arranged adjacent to each other. When the expansion sleeve 3 moves onto the support sleeve 2, the multiple conductive plates 31 move outwards and are pressed between the inner wall of the pit and the support sleeve 2, thereby tightening the expansion sleeve 3 inside the pit.
[0025] In the construction of the grounding device, this application allows for the initial drilling of holes in the ground to form a foundation pit for installing the conductive pipe 1. As the conductive pipe 1 is placed into the pit, the expansion sleeve 3 is sequentially installed onto it. The expansion sleeve 3 is prevented from detaching from the conductive pipe 1 by the limiting mechanism of the pit's inner wall. After the conductive pipe 1 is fully installed in the pit, the expansion sleeve 3 is pushed onto the support sleeve 2 by the pushing component 4. The support sleeve 2 guides the multiple conductive plates 31 on the expansion sleeve 3 to move outwards, achieving effective contact between the expansion sleeve 3 and the inner wall of the pit. The expansion sleeve 3 abuts against the support sleeve 2, thus achieving an effective connection between the conductive pipe 1 and the pit, thereby improving the conductivity of the grounding device.
[0026] Specifically, in this embodiment, after the conductive tube 1 is installed inside the pit, a drag-reducing agent is filled inside the pit. After the expansion sleeve 3 moves to the support sleeve 2, multiple conductive plates 31 will move outward, thereby forming gaps between adjacent conductive plates 31 for the drag-reducing agent to pass through, thus achieving effective filling of the drag-reducing agent inside the pit.
[0027] Preferably, in this embodiment, a limiting platform is provided at the bottom end of the support sleeve 2 to limit the expansion sleeve 3 from disengaging from the support sleeve 2.
[0028] In some embodiments, the conductive plate 31 may be adopted as follows: Figure 2 , Figure 3 The structure shown. See also... Figure 2 , Figure 3The conductive plate 31 has an arc-shaped structure, and a guide rib 311 protrudes from one side of the conductive tube 1 along its circumference, while a guide groove for accommodating the guide rib 311 is recessed on the other side. The conductive plate 31 is arc-shaped. Adjacent conductive plates 31 are connected by the guide rib 311 and the guide groove. That is, the guide rib 311 on one conductive plate 31 slides inside the guide groove on the adjacent conductive plate 31. This allows multiple conductive plates 31 to be connected sequentially. During the movement of the expansion sleeve 3 to the support sleeve 2, the guide ribs 311 on the multiple conductive plates 31 slide inside the guide grooves on adjacent conductive plates 31. Simultaneously, the guide ribs 311 drive the adjacent conductive plates 31 to move outwards. This allows multiple conductive plates 31 to move outwards synchronously, preventing a single conductive plate 31 from affecting its fit with the support sleeve 2 due to excessive outward movement.
[0029] Specifically, in this embodiment, the guide ribs 311 and guide grooves on the conductive plate 31 are located on the inner arc surface of the conductive plate 31. Through the design of the guide ribs 311 and guide grooves, multiple conductive plates 31 can be guided to move outward synchronously along the radial direction of the support sleeve 2.
[0030] In some embodiments, the conductive plate 31 may be adopted as follows: Figure 2 , Figure 3 The structure shown. See also... Figure 2 , Figure 3 Both the guide rib 311 and the guide groove are arc-shaped structures coaxial with the conductive plate 31. Because both the guide rib 311 and the guide groove are arc-shaped, when multiple conductive plates 31 move outwards, the guide rib 311 can always slide against the inner wall of the guide groove, ensuring the stability of the synchronous movement of multiple conductive plates 31. This allows the outer walls of multiple conductive plates 31 to effectively adhere to the inner wall of the pit, and the inner arc surface of the conductive plate 31 to effectively adhere to the outer wall of the support sleeve 2. This reduces the resistance between the conductive pipe 1 and the inner wall of the pit, and improves the conductivity between the conductive pipe 1 and the ground.
[0031] The conductive tube 1, support sleeve 2, and expansion sleeve 3 are all precision-machined from copper. This material selection is based on two main considerations: firstly, copper, as a highly conductive metal, significantly improves the overall conductivity of the component, ensuring stable current transmission; secondly, copper has excellent corrosion resistance and structural strength, effectively resisting oxidation and wear caused by environmental factors during long-term use, thereby reducing the failure rate and extending the service life of key components. Furthermore, copper possesses excellent machinability and plasticity, facilitating the precision molding and assembly of complex components. Overall, this material selection balances optimized electrical performance with enhanced mechanical durability, ensuring reliable operation of the equipment in high-temperature, high-current, or corrosive environments.
[0032] In some embodiments, the aforementioned actuating component 4 may employ, for example... Figure 2 , Figure 3 The structure shown. See also... Figure 2 , Figure 3 The pushing assembly 4 includes a pushing plate 41 and a pushing rod 42. The pushing plate 41 is fitted onto the outside of the conductive tube 1 and is located above the expansion sleeve 3. The pushing rod 42 is slidably disposed inside the conductive tube 1, and a crossbar 43 is fixedly mounted on the pushing rod 42. The crossbar 43 passes through the side wall of the conductive tube 1 and is fixedly connected to the pushing plate 41. The pushing rod 42 is slidably disposed inside the conductive tube 1, and the pushing plate 41 is slidably disposed outside the conductive tube 1. An elongated groove is provided on the side wall of the conductive tube 1 to allow the crossbar 43 to move up and down. The crossbar 43 is fixedly mounted on the pushing rod 42 and fixedly mounted on the top of the pushing plate 41. Thus, when the pushing rod 42 moves inside the conductive tube 1, it can drive the pushing plate 41 to move together, and push the expansion sleeve 3 downward through the pushing plate 41. When the expansion sleeve 3 moves to the chamfer at the top of the support sleeve 2, the chamfer guides the multiple conductive plates 31 to move outward.
[0033] Specifically, in this embodiment, during the construction process, the conductive pipe 1 can be placed inside the foundation pit first. During the placement of the conductive pipe 1, the expansion sleeve 3 is installed on the outside of the conductive pipe 1 in sequence. By limiting the inner wall of the foundation pit and limiting the guide ribs 311 and guide grooves on the conductive plate 31, multiple conductive plates 31 can be prevented from detaching from the conductive pipe 1. At the same time, by limiting the push plate 41, the expansion sleeve 3 can be prevented from moving upward due to external friction.
[0034] Preferably, in this embodiment, a limiting platform is provided on the bottom side of the guide groove to prevent the guide rib 311 from sliding out of the guide groove along the circumference of the conductive plate 31. A corresponding boss is provided on the guide rib 311. When the conductive plate 31 moves outward, the boss on the guide rib 311 can abut against the limiting platform, thereby preventing the guide rib 311 from sliding out of the guide groove, so that the two adjacent conductive plates 31 can only move along their axial direction to complete the disassembly and separation. In the initial state, the expansion sleeve 3 can be installed on the conductive tube 1 first, and then the limiting of the pushing piece 41 can be used to prevent the conductive plate 31 from detaching from the conductive tube 1, so that when the expansion sleeve 3 is on the conductive tube 1, the conductive tube 1 can be placed into the pit as a whole. After the conductive tube 1 is installed in place, the expansion sleeve 3 is pushed to the outside of the support sleeve 2 by the pushing piece 41 and tensioned inside the pit.
[0035] In some embodiments, the aforementioned push rod 42 may be as follows: Figure 3 The structure shown. See also Figure 3The push rod 42 can slide into the conductive tube 1, and the top end of the conductive tube 1 is threaded with a lead screw 5 for pushing the push rod 42 downward. The push rod 42 can slide into the conductive tube 1 as a whole, and the lead screw 5 is also threaded to the end of the conductive tube 1. During on-site operation, the operator can rotate the lead screw 5 to move the lead screw 5 into the conductive tube 1, thereby pushing the push rod 42 into the conductive tube 1.
[0036] Specifically, in this embodiment, the push rod 42 is manually pushed during conventional operation. However, during the movement of the conductive plate 31 towards the side wall, pushing is often difficult due to frictional resistance or tight structural fit. This not only consumes physical strength but also easily affects positioning accuracy due to uneven force application.
[0037] To address this, this embodiment improves the transmission structure by introducing a lead screw 5 as the drive mechanism. The operator can convert the rotational motion into smooth and controllable linear motion of the push rod 42 by rotating the lead screw 5. The core advantage of this design lies in the flexibility and labor-saving nature of its operation: the operator can use a standard wrench or power tool for assistance, significantly reducing manpower requirements, and can also achieve more precise control over the pushing speed and position. This not only significantly improves operational convenience but also enhances the controllability and repeatability of the entire adjustment process, making it particularly suitable for work scenarios requiring frequent adjustments or under high load conditions.
[0038] Preferably, in this embodiment, the lead screw 5 is made of conductive material, so that when the lead screw 5 is installed on the conductive tube 1, an electrical connection can be achieved between the lead screw 5 and the conductive tube 1. A conductive busbar is fixedly connected to the top of the lead screw 5, and the conductive tube 1 is connected to the external grounding wire or grounding busbar through the conductive busbar.
[0039] Among some possible implementations, this application also provides a monitoring component for handling abnormal well voltage, see also... Figure 1 , Figure 4 and Figure 5 The system includes a grounding device for handling abnormal well voltage, a distribution box 6, a terminal block 7, a connector 8, and a connector 9. The terminal block 7 is installed inside the distribution box 6, and the top of the terminal block 7 is provided with a wiring groove for connecting to the well. The connector 8 is installed on the terminal block 7 and is electrically connected to the conductive pipe 1. The connector 9 is provided with a first plug rod 91 and a second plug rod 92, which are respectively used to insert into the terminal block 7 to communicate with the wiring groove and to insert into the connector 8 to communicate with the conductive pipe 1. The connector 9 is provided with a monitoring element 10 for monitoring the current.
[0040] The grounding device for handling abnormal well voltage provided in this embodiment, compared with the prior art, includes a distribution box 6, which is installed on the ground, and all control terminals in the well are installed on the distribution box 6. A terminal block 7 is fixedly installed inside the distribution box 6, and a wiring groove is provided on the top of the terminal block 7. Cables requiring grounding from the distribution box 6 can be connected to the wiring groove, and grounding is achieved through connectors 9 and terminals 8.
[0041] In this application, a terminal block 8 is provided on the terminal block 7, and the terminal block 8 is electrically connected to the terminal slot via a connector 9. A first plug-in rod 91 and a second plug-in rod 92 are provided on the connector 9. The first plug-in rod 91 and the second plug-in rod 92 are respectively inserted into the terminal slot and onto the terminal block 8 to achieve the electrical connection between the terminal slot and the terminal block 8. Furthermore, a current monitoring element 10, which is a current transformer, is provided on the connector 9. The current on the grounding wire is monitored through the monitoring element 10. During normal operation, the three-phase currents are balanced, and theoretically, the current flowing through the neutral point grounding wire is zero or a very small current. When a ground fault occurs in any phase of the system, the fault current flows into the ground through the grounding point and then back to the system neutral point through the grounding wire. At this time, the monitoring element 10 installed on the connector 9 detects this suddenly increased fault current, reduces the current signal proportionally, and then transmits it to the relay protection device. When the relay protection device determines that the current exceeds the set value, it will immediately issue an alarm signal or directly command the circuit breaker to trip and disconnect the faulty circuit, thereby preventing damage to various components in the well, ensuring personal safety, and thus improving the safety during the use of the well.
[0042] Specifically, in this embodiment, by monitoring the current flowing through the grounding wire, it is possible to effectively determine whether there is an abnormality in the voltage inside the well, and an alarm signal can be sent in a timely manner, thereby improving safety during use.
[0043] Specifically, in this embodiment, the monitoring component 10 is installed onto the connector 9, and the connector 9 is detachably installed onto the terminal block 7 and the terminal head 8 via the first plug rod 91 and the second plug rod 92, thereby facilitating the disassembly and installation of the monitoring component 10.
[0044] Specifically, in this embodiment, the first plug rod 91 and the second plug rod 92 are integrally bent and formed, and a monitoring element 10 is installed at the bend. When the first plug rod 91 and the second plug rod 92 are connected to the terminal block 7 and the terminal 8, the wiring groove is electrically connected to the first plug rod 91, and the connector 9 is electrically connected to the second plug rod 92, thereby realizing the electrical connection between the terminal 8 and the wiring groove.
[0045] In some embodiments, the terminal block 7 may be as follows: Figure 5 The structure shown. See also Figure 5 The terminal block 7 has a socket for mounting the first connector 91. A conductive ball 71, communicating with a wiring groove, is fixedly installed inside the socket. An elastic element 72 for pushing the conductive ball 71 outwards is also provided inside the socket. The end of the second connector 92 is bent and has a limiting part 921 for attaching to the connector 8. A copper sleeve is fixedly installed inside the socket, and the conductive ball 71 rolls inside the copper sleeve, electrically connecting to it. One end of the copper sleeve is electrically connected to the wiring groove, thus achieving a conductive connection between the conductive ball 71 and the wiring groove. When the first connector 91 is inserted into the socket, its end abuts against the conductive ball 71, achieving an electrical connection between them. The socket provides sufficient space for the first connector 91 to move.
[0046] Specifically, in this embodiment, a limiting part 921 is also bent at the end of the second plug rod 92. With the setting of the limiting part 921 and the elastic member 72, the first plug rod 91 can be pushed outward by the elastic member 72, so that the limiting part 921 on the second plug rod 92 abuts against the terminal 8, thereby fixing the connector 9 between the terminal 8 and the terminal block 7.
[0047] In some embodiments, the connector 9 described above can be as follows: Figure 5 The structure shown. See also Figure 5 The first plug rod 91 and the second plug rod 92 are set at an acute angle, and the terminal block 7 is provided with a guide surface for abutting the second plug rod 92. When the second plug rod 92 is connected to the terminal block 8, the second plug rod 92 abuts against the guide surface. The first plug rod 91 and the second plug rod 92 are set at an acute angle, and the terminal block 7 is provided with a guide surface for installing the second plug rod 92. When the second plug rod 92 abuts against the guide surface, the guide surface applies a force to the second plug rod 92, and applies an outward force to the first plug rod 91 through the elastic member 72, so that the limiting part 921 on the second plug rod 92 can effectively abut against the terminal block 8, ensuring the stability of the electrical connection.
[0048] In some embodiments, the aforementioned connector 8 may be adopted as follows: Figure 5 The structure shown. See also Figure 5The connector 8 includes an insulating tube 81 and a conductive post 82. The insulating tube 81 is fixedly mounted on the terminal block 7; the conductive post 82 is mounted on the insulating tube 81 and is electrically connected to the conductive tube 81. The conductive post 82 has a degree of freedom in vertical adjustment on the insulating tube 81, and the limiting part 921 on the second plug rod 92 is used to abut against the conductive post 82. The insulating tube 81 is fixedly mounted on the terminal block 7, and the conductive post 82 is slidably arranged inside the insulating tube 81. The conductive post 82 can be adjusted in the vertical direction, thereby facilitating the subsequent assembly and disassembly of the connector 9.
[0049] Specifically, in this embodiment, a guide rod protrudes from the outer side of the conductive post 82, and an elongated clearance hole is provided on the side wall of the insulating sleeve to avoid the guide rod. A drive ring is threaded onto the outer side wall of the insulating sleeve, which can drive the guide rod to move downward. A spring is also installed inside the insulating sleeve to push the conductive post 82 upward, thereby limiting the position of the limiting part 921 at the end of the second plug-in rod 92. When the second plug-in rod 92 is inserted into the conductive post 82, the conductive post 82 has a chamfer. Guided by the chamfer, the conductive post 82 moves downward, causing the limiting part 921 on the second plug-in rod 92 to move to the rear. Under the action of the spring, the conductive post 82 moves upward, thus completing the connection between the second plug-in rod 92 and the conductive post 82.
[0050] In some embodiments, the conductive post 82 may be adopted as follows: Figure 5 The structure shown. See also Figure 5 A limiting rod 821 for limiting the limiting part 921 is slidably provided on the top of the conductive post 82. The limiting rod 821 is electrically connected to the conductive post 82, and a spring-loaded member 822 for pushing the limiting rod 821 upward is provided on the conductive post 82. A clearance groove for avoiding the limiting rod 821 is provided on the top of the conductive post 82, and the limiting rod 821 is provided inside the clearance groove. The limiting rod 821 is slidably provided on the conductive post 82, and a chamfer is provided on the outer side of the top of the limiting rod 821. When the second plug rod 92 moves towards the conductive post 82, the second plug rod 92 will push the conductive post 82 downward, so that the limiting part 921 at the end of the second plug rod 92 can move to the rear of the limiting rod 821, and the second plug rod 92 abuts against the outer surface of the limiting rod 821, thereby fixing the connector 9 on the connector 8.
[0051] Preferably, in this embodiment, the limiting rod 821 is electrically connected to the conductive post 82, and the conductive post 82 is electrically connected to the conductive tube 1, thereby realizing the electrical connection between the wiring slot on the terminal block 7 and the conductive tube 1, and the current on the grounding line can be monitored by the monitoring element 10.
[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A grounding device for handling abnormal well voltage, characterized in that, include: A conductive tube (1) is provided with a support sleeve (2) whose outer diameter is larger than that of the conductive tube (1) and is fixedly installed in the middle part of the conductive tube (1); An expansion sleeve (3) is slidably disposed on the outside of the conductive tube (1) along the length direction of the conductive tube (1). The expansion sleeve (3) includes multiple conductive plates (31), which are arranged sequentially along the circumference of the conductive tube (1). The expansion sleeve (3) is located above the support sleeve (2). The top of the support sleeve (2) is provided with a chamfer to facilitate the expansion sleeve (3) sliding into the support sleeve (2). A pushing component (4) is disposed between the conductive tube (1) and the expansion sleeve (3) for pushing the expansion sleeve (3) to move onto the support sleeve (2).
2. The grounding device for handling abnormal well voltage as described in claim 1, characterized in that, The conductive plate (31) has an arc-shaped structure, and a guide rib (311) protrudes from one side of the conductive tube (1) along the circumference of the conductive plate (31), while a guide groove for accommodating the guide rib (311) is recessed on the other side.
3. The grounding device for handling abnormal well voltage as described in claim 2, characterized in that, Both the guide rib (311) and the guide groove are arc-shaped structures coaxial with the conductive plate (31).
4. The grounding device for handling abnormal well voltage as described in claim 1, characterized in that, The actuating component (4) includes: The push plate (41) is fitted on the outside of the conductive tube (1) and located above the expansion sleeve (3); A push rod (42) is slidably disposed inside the conductive tube (1). A crossbar (43) is fixedly installed on the push rod (42). The crossbar (43) passes through the side wall of the conductive tube (1) and is fixedly connected to the push plate (41).
5. The grounding device for handling abnormal well voltage as described in claim 4, characterized in that, The push rod (42) can slide into the inside of the conductive tube (1), and the top end of the conductive tube (1) is threaded with a lead screw (5) for pushing the push rod (42) downward.
6. A monitoring component for handling abnormal well voltage, comprising a grounding device for handling abnormal well voltage as described in any one of claims 1-5, characterized in that, Also includes: Distribution box (6); A terminal block (7) is installed inside the distribution box (6), and the top of the terminal block (7) is provided with a wiring groove for connecting the well. A connector (8) is installed on the terminal block (7) and is electrically connected to the conductive tube (1); The connector (9) is provided with a first plug rod (91) and a second plug rod (92). The first plug rod (91) and the second plug rod (92) are respectively used to be inserted into the terminal block (7) to communicate with the terminal groove and to be inserted into the terminal head (8) to communicate with the conductive tube (1). The connector (9) is provided with a monitoring element (10) for monitoring the current.
7. The monitoring component for handling abnormal well voltage as described in claim 6, characterized in that, The terminal block (7) is provided with a plug hole for installing the first plug rod (91). A conductive ball (71) communicating with the wiring groove is fixedly provided inside the plug hole, and an elastic element (72) for pushing the conductive ball (71) to move outward is provided inside the plug hole. The end of the second plug rod (92) is bent and provided with a limiting part (921) for hanging on the terminal block (8).
8. The monitoring component for handling abnormal well voltage as described in claim 7, characterized in that, The first plug rod (91) and the second plug rod (92) are set at an acute angle, and the terminal block (7) is provided with a guide surface for abutting the second plug rod (92). When the second plug rod (92) is connected to the terminal block (8), the second plug rod (92) abuts against the guide surface.
9. The monitoring component for handling abnormal well voltage as described in claim 7, characterized in that, The connector (8) includes: An insulating tube (81) is fixedly installed on the terminal block (7); A conductive post (82) is installed on the insulating tube (81). The conductive post (82) is electrically connected to the conductive tube (1), and the position of the conductive post (82) on the insulating tube (81) has a degree of freedom to be adjusted in the vertical direction. The limiting part (921) on the second plug rod (92) is used to abut against the conductive post (82).
10. The monitoring component for handling abnormal well voltage as described in claim 9, characterized in that, The top of the conductive post (82) is slidably provided with a limiting rod (821) for limiting the limiting part (921). The limiting rod (821) is electrically connected to the conductive post (82), and the conductive post (82) is provided with a spring-loaded member (822) for pushing the limiting rod (821) to move upward.