Combined low-voltage leakage detection plate for downhole equipment

Abstract

The utility model relates to a combined low pressure electric leakage detection board for underground equipment belongs to the safety power supply technical field of underground. The upper surface of female board is detachably installed with multiple electric leakage detection boards, and the bottom end of electric leakage detection board is provided with fixed extension plate, and the female board is provided with positioning clamping groove for fixed extension plate to penetrate, and the lower surface of female board is fixed with fixed base, and the fixed base is at the side of positioning clamping groove, and fixed extension plate is fixedly connected with fixed base through connecting bolt after penetrating positioning clamping groove, and the middle part of the bottom end of electric leakage detection board is provided with connecting pin, and the upper surface of female board is provided with connecting socket matched with connecting pin. The utility model has the advantages that: the detection number can be flexibly configured according to actual design requirement, and the power supply is connected through female board, and the cable quantity is reduced. Electric leakage detection board is installed perpendicularly and in parallel with female board, and fixed installation of electric leakage detection board can be realized through two fixed bases, and has the advantages of simple structure, convenient installation, reduced installation space and the like.

Description

Technical Field

[0001] This utility model relates to a combined low-voltage leakage current detection board for downhole equipment, belonging to the field of downhole safety power supply technology. Background Technology

[0002] Underground power supply safety generally includes grounding protection, leakage current protection, and overcurrent protection, with leakage current protection being the most important. Adopting reliable leakage current protection can greatly improve the safety and reliability of underground power supply. With the upgrading of mining equipment, products such as low-voltage combined power supplies and explosion-proof lithium-ion battery boxes have multiple output branches, and the number of output branches needs to be configured according to actual site requirements. Current leakage current detection solutions have the following problems: 1. Currently, low-voltage leakage current protectors can only perform single-circuit leakage current detection. If the number of output branches increases, it is necessary to add more leakage current protectors, which in turn requires additional power supply wiring for each leakage current protector, leading to complex wiring. 2. While reserving installation space and redundant wiring for multiple leakage current protection circuits can meet expansion needs, it multiplies the workload and wastes space and cables.

[0003] To solve one of the above problems, there is an urgent need for a combined low-voltage leakage current detection board for downhole equipment. Utility Model Content

[0004] Based on the shortcomings of the existing technology, the technical problem to be solved by this utility model is: how to solve the problem of not being able to flexibly configure the number of detection channels according to actual design requirements. To this end, a combined low-voltage leakage detection board for downhole equipment is provided.

[0005] The present invention relates to a combined low-voltage leakage current detection board for downhole equipment, comprising a mother plate. Power terminals and wiring terminals are respectively provided on both sides of the upper surface of the mother plate. The key feature is that multiple leakage current detection boards are detachably mounted on the upper surface of the mother plate. A fixed extension plate is provided at the bottom of each leakage current detection board. A positioning groove is provided on the mother plate for the fixed extension plate to pass through. A fixing seat is fixed on the lower surface of the mother plate, located on one side of the positioning groove. The fixed extension plate passes through the positioning groove and is fixedly connected to the fixing seat by connecting bolts. A connecting pin is provided in the middle of the bottom end of each leakage current detection board. A connecting socket that mates with the connecting pin is provided on the upper surface of the mother plate. The mother plate is designed with multiple connecting sockets, which can directly connect to the connecting pins on the leakage current detection boards to achieve electrical connection. The number of leakage current detection boards can be flexibly configured according to the actual design requirements of the product, and multiple leakage current detection boards can share a single power bus, reducing the number of power wiring connections.

[0006] In any of the above solutions, it is preferred that each group of leakage current detection boards has two sets of fixed extension plates spaced apart at the bottom, and the fixed extension plates are integrally formed with the leakage current detection boards, and each group of leakage current detection boards is provided with two sets of positioning slots.

[0007] In any of the above schemes, it is preferred that each set of fixed extension plates has a set of fixing holes A at the end away from the leakage current detection plate.

[0008] In any of the above embodiments, it is preferred that the fixing base includes a base plate fixedly connected to the mother plate, one end of the base plate is bent to form a vertical plate, and a fixing hole B that mates with the fixing hole A is provided on the vertical plate. The connecting bolt passes through the fixing hole A and the fixing hole B in sequence to fix the fixing extension plate to the corresponding vertical plate.

[0009] In any of the above schemes, it is preferred that multiple sets of leakage current detection boards are arranged parallel to each other and at equal intervals, and the motherboard and the leakage current detection boards are arranged perpendicular to each other.

[0010] In any of the above solutions, it is preferred that the leakage current detection board is provided in five groups along the length of the motherboard, and each group of leakage current detection boards corresponds to a set of wiring terminals.

[0011] In any of the above embodiments, it is preferred that each leakage current detection board is provided with two connection pins, and the motherboard is provided with connection sockets corresponding to the connection pins one by one. Both the connection sockets on the motherboard and the connection pins on the leakage current detection board adopt a double-row connection structure, in which the parallel connection pins are interconnected to achieve redundant electrical connection design.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. The combined low-voltage leakage current detection board for downhole equipment described in this utility model can be flexibly configured with the number of detection channels according to actual design requirements, and the power supply is connected through the motherboard, reducing the number of cables.

[0013] 2. The leakage current detection board is installed vertically and side by side with the motherboard, and only two fixing brackets are needed to fix the leakage current detection board. It has the advantages of simple structure, low cost, convenient installation and reduced installation space.

[0014] 3. If one of the leakage current detection boards fails, only the faulty circuit detection board needs to be replaced, reducing maintenance costs.

[0015] 4. Both the connector socket and the connector pin adopt a double-row connection structure with electrical redundancy design to ensure the reliability of the electrical connection. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 The three-dimensional representation of this utility model Figure 1 ; Figure 2 The three-dimensional representation of this utility model Figure 2 ; Figure 3 This is the front view of the present invention; Figure 4 This is a top view of the present invention; Figure 5 This is the right view of the present invention; Figure 6 This is the left view of the present invention; In the diagram: 1. Motherboard 2. Leakage detection board 3. Connecting socket 4. Fixing base 5. Positioning slot 6. Power terminal 7. Wiring terminal 8. Fixing extension plate 9. Connecting pin 10. Fixing hole A 11. Connecting bolt. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings: The present invention will be further described below through specific embodiments, but it is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0019] Example 1, as Figure 1-2 As shown, the combined low-voltage leakage current detection board for downhole equipment includes a mother plate 1. Power terminals 6 and wiring terminals 7 are respectively provided on both sides of the upper surface of the mother plate 1. Multiple sets of leakage current detection boards 2 are detachably installed on the upper surface of the mother plate 1. A fixed extension plate 8 is provided at the bottom end of the leakage current detection board 2. A positioning slot 5 for the fixed extension plate 8 to pass through is opened on the mother plate 1. A fixing seat 4 is fixed on the lower surface of the mother plate 1. The fixing seat 4 is located on one side of the positioning slot 5. After the fixed extension plate 8 passes through the positioning slot 5, it is fixedly connected to the fixing seat 4 by connecting bolts. A connecting pin 9 is provided in the middle of the bottom end of the leakage current detection board 2. A connecting socket 3 that mates with the connecting pin 9 is provided on the upper surface of the mother plate 1. The motherboard 1 is designed with multiple sets of connection sockets 3, which can be directly connected to the connection pins 9 on the leakage current detection board 2 to achieve electrical connection. The number of leakage current detection boards 2 can be flexibly configured according to the actual design requirements of the product, and multiple leakage current detection boards 2 can share one power bus, reducing the number of power wiring.

[0020] This product is used in low-voltage combined power supply switch lighting circuits, explosion-proof lithium-ion battery boxes, and other mining explosion-proof products with multiple branch power outputs. It solves the problem of the inability to expand the number of leakage current detection channels in low-voltage coal mine equipment with multiple power outputs. It also solves the problem that existing leakage current detection protectors cannot flexibly configure the number of detection channels according to actual design requirements. Furthermore, it addresses the problem of increased construction work and wasted space caused by redundant leakage current detection channel designs.

[0021] Example 2, as Figure 1-6 As shown, the combined low-voltage leakage current detection board for downhole equipment includes a mother plate 1. Power terminals 6 and wiring terminals 7 are respectively provided on both sides of the upper surface of the mother plate 1. Multiple sets of leakage current detection boards 2 are detachably installed on the upper surface of the mother plate 1. A fixed extension plate 8 is provided at the bottom end of the leakage current detection board 2. A positioning slot 5 for the fixed extension plate 8 to pass through is opened on the mother plate 1. A fixing seat 4 is fixed on the lower surface of the mother plate 1. The fixing seat 4 is located on one side of the positioning slot 5. After the fixed extension plate 8 passes through the positioning slot 5, it is fixedly connected to the fixing seat 4 by connecting bolts. A connecting pin 9 is provided in the middle of the bottom end of the leakage current detection board 2. A connecting socket 3 that mates with the connecting pin 9 is provided on the upper surface of the mother plate 1.

[0022] Furthermore, each set of leakage current detection boards 2 has two sets of fixed extension plates 8 spaced apart at its bottom end, and the fixed extension plates 8 are integrally formed with the leakage current detection boards 2. Each set of leakage current detection boards 2 is provided with two sets of positioning slots 5.

[0023] Furthermore, each set of fixed extension plates 8 has a set of fixing holes A10 at the end away from the leakage detection plate 2.

[0024] Furthermore, the fixing base 4 includes a base plate fixedly connected to the mother plate 1. One end of the base plate is bent to form a vertical plate. A fixing hole B that mates with the fixing hole A10 is provided on the vertical plate. The connecting bolt 11 passes through the fixing hole A10 and the fixing hole B in sequence to fix the fixing extension plate 8 to the corresponding vertical plate.

[0025] Furthermore, multiple sets of leakage current detection boards 2 are arranged parallel to each other and at equal intervals, and the mother board 1 is arranged perpendicular to the leakage current detection boards 2.

[0026] Furthermore, the leakage current detection board 2 is provided in five groups along the length of the mother plate 1, and each group of leakage current detection boards 2 corresponds to a set of wiring terminals 7.

[0027] Furthermore, each leakage current detection board 2 is provided with two connecting pins 9, and the motherboard 1 is provided with connecting sockets 3 corresponding to the connecting pins 9 one by one. Both the connecting sockets 3 on the motherboard 1 and the connecting pins 9 on the leakage current detection board 2 adopt a double-row connection structure. The parallel connecting pins in the double-row structure are connected to each other to achieve redundant electrical connection design.

[0028] Five sets of connection sockets 3 are evenly designed on the motherboard 1. Each set has two connection sockets 3, which can be directly connected to the corresponding connection pins 9 on the leakage current detection board 2 to achieve electrical connection. The number of circuits of the leakage current detection board 2 can be flexibly configured according to the actual design requirements of the product.

[0029] Both the connection socket 3 on the motherboard and the connection pins 9 on the leakage detection board 2 adopt a double-row connection structure. The parallel connection pins in the double-row structure are connected to each other to achieve redundant electrical connection design.

[0030] The motherboard design features five sets of connection sockets 3, each equipped with two positioning slots 5. When connecting the pins 9 to the connection sockets 3, the fixing extension plate 8 of the leakage current detection board needs to be inserted into the positioning slots 5 to position the leakage current detection board and prevent it from moving left or right or tipping over. The fixing extension plates 8 on both sides of the leakage current detection board have fixing holes A10 at their bottoms. After the fixing extension plates 8 are inserted into the positioning slots 5, they are connected to the fixing base 4 via connecting bolts to fix the leakage current detection board and prevent it from moving up or down. The motherboard 1 and power terminals 6 are connected to the power pins of each leakage current detection board pin 9 via internal PCB wiring, allowing all five leakage current detection boards to share a single power bus, reducing the number of power connections. The external leads of all five leakage current detection boards are electrically connected to the motherboard sockets via pins. The motherboard sockets are connected to the wiring terminals 7 via internal PCB wiring, eliminating the need to disconnect or reconnect cables when replacing leakage current detection boards, thus improving replacement efficiency.

[0031] The beneficial effects of this embodiment are as follows: This utility model allows for flexible configuration of the number of detection circuits according to actual design requirements, and the power supply is connected through the motherboard, reducing the number of cables. The leakage current detection board is installed vertically and side-by-side with the motherboard, and only two fixing brackets are needed to fix the leakage current detection board, offering advantages such as simple structure, low cost, convenient installation, and reduced installation space. If one leakage current detection board fails, only the faulty circuit detection board needs to be replaced, reducing maintenance costs. Both the connection socket and the connection pins adopt a double-row connection structure, implementing electrical redundancy design to ensure the reliability of the electrical connection. The above shows and describes the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

[0032] Any aspects of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A low-voltage leakage detection plate for a combined downhole device, comprising a mother plate, two side edges of the upper surface of the mother plate are respectively provided with a power terminal and a wiring terminal, characterized in that: Multiple leakage current detection boards are detachably mounted on the upper surface of the motherboard. A fixed extension plate is provided at the bottom of the leakage current detection board. A positioning slot is provided on the motherboard for the fixed extension plate to pass through. A fixing seat is fixed on the lower surface of the motherboard. The fixing seat is located on one side of the positioning slot. After the fixed extension plate passes through the positioning slot, it is fixedly connected to the fixing seat by connecting bolts. A connecting pin is provided in the middle of the bottom end of the leakage current detection board. A connecting socket that mates with the connecting pin is provided on the upper surface of the motherboard.

2. The low voltage leakage detection plate for modular downhole equipment of claim 1, wherein, Each set of leakage current detection boards has two sets of fixed extension plates at a distance from the bottom, and the fixed extension plates are integrally set with the leakage current detection boards. Each set of leakage current detection boards is provided with two sets of positioning slots.

3. The low voltage leakage detection plate for modular downhole equipment of claim 2, wherein, Each set of fixed extension plates has a set of fixing holes A at the end furthest from the leakage current detection plate.

4. The low voltage leakage detection plate for modular downhole equipment of claim 3, wherein, The fixing base includes a base plate that is fixedly connected to the mother plate. One end of the base plate is bent to form a vertical plate. A fixing hole B that mates with fixing hole A is provided on the vertical plate. The connecting bolt passes through fixing hole A and fixing hole B in sequence to fix the fixing extension plate to the corresponding vertical plate.

5. The low voltage leakage detection plate for modular downhole equipment of any of claims 1-4, wherein, Multiple sets of leakage current detection boards are arranged parallel to each other and at equal intervals, and the motherboard is arranged perpendicular to the leakage current detection boards.

6. The combined low-voltage leakage current detection board for downhole equipment according to claim 5, characterized in that, The leakage current detection board is provided in five groups along the length of the motherboard, and each group of leakage current detection boards corresponds to a set of wiring terminals.

7. The combined low-voltage leakage current detection board for downhole equipment according to claim 6, characterized in that, Each leakage current detection board is equipped with two connection pins, and the motherboard is equipped with connection sockets that correspond one-to-one with the connection pins.

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