Mining glue pouring type high-voltage multi-core wiring terminal

Abstract

A mining glue pouring type high-voltage multi-core wiring terminal comprises a wiring seat, a vertically-through glue pouring through hole is formed in the middle of the wiring seat, a first annular groove and a second annular groove are formed in the side wall of an inner cavity of the glue pouring through hole in a surrounding mode, and a head sealing plate is fixedly installed in the middle of the inner cavity of the glue pouring through hole. The end sealing plate is located between the first annular groove and the second annular groove. A plurality of wiring holes are formed in the end sealing plate, each high-voltage silica gel line penetrates through the corresponding wiring hole, the glue filling through hole is filled with insulation glue, and the upper side and the lower side of the end sealing plate and the first annular groove and the second annular groove are filled with the insulation glue. According to the utility model, defects in the prior art are overcome, good insulation performance can be maintained in a high-voltage environment, and electric leakage accidents are prevented. And the problem that the whole insulating glue falls off from the glue filling through hole due to drawing of the high-voltage silica gel line is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of mining electrical equipment technology, specifically to a mining potting type high-voltage multi-core terminal block. Background Technology

[0002] Terminal blocks are accessories used to achieve electrical connections and have a wide range of applications in the current industrial market. Sealed terminal blocks have waterproof, dustproof, and corrosion-resistant sealing properties, providing reliable connections in harsh environments and preventing moisture, dust, chemicals, etc., from entering the connector, protecting the internal electrical contacts and circuits of the terminal block from the influence of the external environment.

[0003] Currently, most multi-core terminal blocks for mining on the market are rated for 660V and below. However, with the use of 3300V high-voltage vacuum switchgear in working conditions, existing terminal blocks suffer from insufficient insulation performance and are prone to breakdown under high-voltage environments. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a mine-use potting-type high-voltage multi-core terminal block. It overcomes these deficiencies with its reasonable design, ensuring good insulation performance even under high-voltage conditions and preventing leakage accidents. Furthermore, it effectively avoids the problem of the insulating adhesive detaching from the potting hole due to pulling on the high-voltage silicone wire.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A mining-grade, glue-filled, high-voltage multi-core terminal block includes a terminal block with a through-hole for filling the center. The inner wall of the through-hole is surrounded by a first annular groove and a second annular groove. A head plate is fixedly installed in the center of the through-hole, positioned between the first and second annular grooves. The head plate has multiple wiring holes through which high-voltage silicone wires pass. The through-hole is filled with insulating glue, which fills the upper and lower sides of the head plate and the first and second annular grooves.

[0007] Preferably, a partition is provided above the inner cavity of the glue-filling through hole, the insulating glue is filled on the upper and lower sides of the partition, and multiple through holes are opened on the surface of the partition, through which each high-voltage silicone wire passes.

[0008] Preferably, the thickness of the insulating adhesive above the partition is not less than 2 mm.

[0009] Preferably, a fastening sleeve is fitted on the outer surface of the terminal block, the position of the fastening sleeve corresponds to the position of the partition, and the surface of the fastening sleeve has multiple threaded holes, in which a set screw is threadedly connected, the end of the set screw passing through the fastening sleeve and contacting the surface of the terminal block.

[0010] Preferably, the insulating adhesive is an epoxy resin potting compound.

[0011] Preferably, the end cap is made of flame-retardant nitrile rubber, and the partition is made of epoxy resin.

[0012] Preferably, the inner wall of the glue-filling through hole is surrounded by an annular platform, and the end cap plate is in contact with the upper surface of the annular platform.

[0013] This utility model provides a mine-use potting-type high-voltage multi-core terminal block with the following advantages: Epoxy resin potting agent is evenly distributed on the upper and lower sides of the end cap plate and within the first and second annular grooves, allowing the epoxy resin potting agent to fully cure and form an insulating adhesive. This allows the insulating adhesive to completely encapsulate the high-voltage silicone wire, ensuring it maintains good insulation performance under high-voltage conditions and preventing leakage accidents. Furthermore, by providing the first and second annular grooves above and below the end cap plate respectively, the insulating adhesive is directly embedded within these grooves, effectively enhancing the bonding force between the insulating adhesive and the terminal block; consequently, it effectively prevents the insulating adhesive from detaching from the potting hole due to pulling on the high-voltage silicone wire. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in this utility model or the prior art, the accompanying drawings used in the description of the prior art will be briefly introduced below.

[0015] Figure 1 A schematic diagram of the structure of this utility model;

[0016] Figure 2 A schematic diagram of the cross-sectional structure of this utility model;

[0017] Figure 3 A cross-sectional structural diagram of this utility model;

[0018] Explanation of the labels in the diagram:

[0019] 1. Terminal block; 2. Potting through hole; 3. First annular groove; 4. Second annular groove; 5. End plate; 6. Wiring hole; 7. Insulating adhesive; 8. Partition plate; 10. High-voltage silicone wire; 11. Fastening sleeve; 12. Set screw. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0021] Example 1, as Figure 1-3 As shown, a mining-grade high-voltage multi-core terminal block with glue filling includes a terminal block 1. The terminal block 1 has a through-hole 2 that extends vertically through the center. The inner wall of the through-hole 2 is surrounded by a first annular groove 3 and a second annular groove 4. A head plate 5 is fixedly installed in the middle of the inner cavity of the through-hole 2, located between the first annular groove 3 and the second annular groove 4. Specifically, an annular platform 13 is arranged around the inner wall of the through-hole 2, and the head plate 5 is in contact with the upper surface of the annular platform 13. The head plate 5 has multiple wiring holes 6, through which each high-voltage silicone wire 10 passes. The through-hole 2 is filled with insulating glue 7, which fills the upper and lower sides of the head plate 5 and the first and second annular grooves 3 and 4.

[0022] Working principle:

[0023] During assembly, firstly, each high-voltage silicone wire 10 is passed through the corresponding wiring hole 6 of the end cap plate 5. Then, the end cap plate 5 is placed into the potting hole 2, positioned between the first annular groove 3 and the second annular groove 4. In this embodiment, an annular platform 13 is provided around the inner wall of the potting hole 2, allowing the end cap plate 5 to be directly supported on the annular platform 13. Next, EP6510 epoxy resin potting agent mixed in a 4:1 ratio is poured in, ensuring the epoxy resin potting agent is evenly distributed on the upper and lower sides of the end cap plate 5 and within the first and second annular grooves 3 and 4. The terminal block 1 is then horizontally placed for 24 hours to allow the epoxy resin potting agent to fully cure and form an insulating adhesive 7. This insulating adhesive 7 completely encapsulates the high-voltage silicone wire 10, ensuring good insulation performance under high-voltage conditions and preventing leakage accidents.

[0024] In addition, by setting the first annular groove 3 and the second annular groove 4 above and below the end cap plate 5 respectively, the insulating adhesive 7 is directly embedded in the first annular groove 3 and the second annular groove 4, thereby effectively enhancing the bonding force between the insulating adhesive 7 and the terminal block 1; thus effectively avoiding the problem of the entire insulating adhesive 7 falling out of the potting hole 2 due to pulling the high-voltage silicone wire 10.

[0025] In Example 2, as a further preferred embodiment of Example 1, a partition 8 is provided above the inner cavity of the potting through-hole 2. Insulating adhesive 7 is filled on the upper and lower sides of the partition 8. Multiple through-holes are formed on the surface of the partition 8, and each high-voltage silicone wire 10 passes through the corresponding through-hole. By setting the partition 8, during the potting process, the partition 8 can be embedded in the insulating adhesive 7, and the insulating adhesive 7 is poured onto the upper and lower sides of the partition 8. The thickness of the insulating adhesive 7 above the partition 8 is not less than 2mm. Thus, the partition 8 can further enhance the fixing effect of the insulating adhesive 7, and a multi-layer insulation structure is formed by the partition 8 and the insulating adhesive 7 to effectively ensure the withstand voltage capability of the entire terminal under high voltage environment.

[0026] In embodiment three, as a further preferred embodiment, a fastening sleeve 11 is fitted onto the outer surface of the terminal block 1. The position of the fastening sleeve 11 corresponds to the position of the partition 8. Multiple threaded holes are formed on the surface of the fastening sleeve 11, and set screws 12 are threaded into these holes. The ends of the set screws 12 pass through the fastening sleeve 11 and contact the surface of the terminal block 1. The tight fit between the fastening sleeve 11 and the terminal block 1 further enhances the stability of the overall structure. The fastening sleeve 11 also facilitates fixing the entire terminal block 1 to the mounting plate requiring the cavity, thus defining the installation position of the terminal block 1.

[0027] In Example 4, as a further preferred embodiment of Example 1, the insulating adhesive 7 is an epoxy resin potting compound, and the partition is made of epoxy resin material. Epoxy resin material has excellent insulation properties and high-temperature resistance, thus effectively ensuring the stable operation of the high-voltage multi-core terminal block in harsh environments and extending the service life of the equipment. The end cap 5 is made of flame-retardant nitrile rubber material. Flame-retardant nitrile rubber material has good oil resistance and aging resistance, ensuring that it is not easily deformed during long-term use, further improving the sealing and safety of the overall structure. In this embodiment, both the terminal block 1 and the fastening sleeve 11 are made of H62 brass.

[0028] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A mine-use potting type high-voltage multi-core terminal block, characterized in that: The device includes a terminal block (1), which has a through-hole (2) in the middle. The inner wall of the through-hole (2) is provided with a first annular groove (3) and a second annular groove (4). A head plate (5) is fixedly installed in the middle of the through-hole (2). The head plate (5) is located between the first annular groove (3) and the second annular groove (4). The head plate (5) has multiple wiring holes (6). Each high-voltage silicone wire (10) passes through the corresponding wiring hole (6). The through-hole (2) is filled with insulating glue (7). The insulating glue (7) fills the upper and lower sides of the head plate (5) and the first annular groove (3) and the second annular groove (4).

2. The mine-use potting type high-voltage multi-core terminal block according to claim 1, characterized in that: A partition (8) is provided above the inner cavity of the potting through hole (2). The insulating adhesive (7) is filled on the upper and lower sides of the partition (8). Multiple through holes are opened on the surface of the partition (8), and each high-voltage silicone wire (10) passes through the corresponding through hole.

3. A mine-use potting type high-voltage multi-core terminal block according to claim 2, characterized in that: The thickness of the insulating adhesive (7) above the partition (8) is not less than 2 mm.

4. A mine-use potting type high-voltage multi-core terminal block according to claim 2, characterized in that: A fastening sleeve (11) is fitted on the outer surface of the terminal block (1). The position of the fastening sleeve (11) corresponds to the position of the partition (8). Multiple threaded holes are opened on the surface of the fastening sleeve (11). A set screw (12) is threadedly connected in the threaded hole. The end of the set screw (12) passes through the fastening sleeve (11) and contacts the surface of the terminal block (1).

5. A mine-use potting type high-voltage multi-core terminal block according to claim 1, characterized in that: The insulating adhesive (7) is an epoxy resin potting compound.

6. A mine-use potting type high-voltage multi-core terminal block according to claim 1, characterized in that: The end cap (5) is made of flame-retardant nitrile rubber material, and the partition is made of epoxy resin material.

7. A mine-use potting type high-voltage multi-core terminal block according to claim 1, characterized in that: The inner wall of the glue-filling through hole (2) is surrounded by an annular platform (13), and the end plate (5) is in contact with the upper surface of the annular platform (13).

Images