Connecting structure of bus duct plug box and plug box

Abstract

The utility model discloses a connecting structure of a bus duct plug box and a plug box, comprising a plug box and a plug box, the top of the plug box is provided with a groove arranged around the periphery of the plug box, a first silica gel sealing ring is embedded in the groove, and the first silica gel sealing ring is in interference fit with the groove; a first flange surface is formed at the bottom of the plug box, a partition plate is arranged in the plug box, a second flange surface is formed at the bottom of the partition plate, and a second silica gel sealing ring is fixed on the first flange surface; the top of the inserting box penetrates through the first flange face and extends to the position of the second flange face, the first silica gel sealing ring abuts against the second flange face, and the second silica gel sealing ring abuts against the inserting box; a ventilation valve is arranged on the side wall of the plug box, and the ventilation valve is communicated with the interior of the plug box. According to the utility model, the connection sealing effect of the plug box and the plug box is improved, and the maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of power distribution equipment technology, and in particular to a connection structure between a busbar trunking junction box and a plug-in box. Background Technology

[0002] The existing busbar junction boxes and distribution junction boxes generally use a single-layer rubber sealing ring structure for sealing. On the one hand, the sealing ring is prone to aging and failure, and the single-layer sealing ring structure is prone to gaps under dynamic vibration or thermal expansion and contraction, resulting in a reduction in the sealing protection level. On the other hand, when the air pressure inside and outside the junction box is unbalanced, humid air will form condensation inside the box, further reducing the sealing effect. This requires frequent replacement of the sealing ring to ensure the sealing effect, increasing maintenance costs.

[0003] Therefore, it is urgent to research and develop a connection structure between busbar trunking boxes and connector boxes to solve the above-mentioned technical problems. Summary of the Invention

[0004] The purpose of this utility model is to provide a connection structure between a busbar trunking junction box and a plug box. This connection structure can improve the sealing effect of the junction box and the plug box and reduce maintenance costs.

[0005] To achieve the above objectives, this utility model provides a connection structure between a busbar trunking junction box and a connector box, the specific implementation of which is as follows:

[0006] A connection structure between a busbar trunking junction box and a connector box includes a junction box and a connector box. A groove is provided on the top of the junction box around the periphery of the junction box. A first silicone sealing ring is embedded in the groove, and the first silicone sealing ring is interference-fitted with the groove.

[0007] A first flange face is formed at the bottom of the plug box, a partition is provided inside the plug box, a second flange face is formed at the bottom of the partition, and a second silicone sealing ring is fixed on the first flange face.

[0008] The top of the insert extends through the first flange face to the position of the second flange face, the first silicone sealing ring abuts against the second flange face, and the second silicone sealing ring abuts against the insert;

[0009] A vent valve is provided on the side wall of the plug box, and the vent valve opens to the interior of the plug box.

[0010] This utility model discloses a connection structure between a busbar trunking junction box and a connector box. Compared with the prior art, it features a double-layered, redundant sealing mechanism. This structure involves a first silicone sealing ring in the top groove of the junction box that abuts against a second flange inside the connector box, and a second silicone sealing ring at the bottom of the connector box that abuts against the junction box. This double-layered sealing provides redundant protection, ensuring that even if a single sealing ring fails, the seal between the junction box and the connector box will not fail, thus improving sealing performance. Furthermore, the invention utilizes a vent valve located on the side wall of the connector box to balance the air pressure inside and outside the connector box, preventing sealing ring deformation and failure due to negative pressure. This enhances the sealing effect of the connection between the junction box and the connector box and reduces maintenance costs.

[0011] In some embodiments, a circumferential groove is provided on the outer peripheral wall of the insert box, the circumferential groove having at least two bends, the circumferential groove being located between the first flange face and the second flange face.

[0012] By providing a circumferential groove on the outer peripheral wall of the socket between the first flange face and the second flange face, and the circumferential groove having at least two bends, the path of condensate between the socket box and the socket is extended to prevent liquid water from entering the socket.

[0013] In some embodiments, a drain hole is provided at the lowest point of the circumferential trench, and a drainage pipe is provided on the plug box, with the inlet of the drainage pipe inserted into the drain hole and the outlet located outside the plug box.

[0014] By setting a drain hole at the lowest point of the surrounding trench, and inserting the condensate drain pipe inlet on the connector box into the drain hole, liquid water in the surrounding trench is drained out, further preventing liquid water from entering the connector box.

[0015] In some embodiments, the bending angle of the bend in the circumferential groove is ≥120°.

[0016] By setting the bending angle of the bend section of the surrounding groove to ≥120°, the path for condensate to penetrate into the casing is further extended.

[0017] In some embodiments, a guide pin is provided at the bottom of the plug box, and a guide hole is provided on the plug box, wherein the guide pin is engaged with the guide hole.

[0018] By using a guide pin at the bottom of the connector box to engage with the guide hole on the connector box, the precise alignment between the connector box and the connector box is improved, avoiding wear and tear on the sealing ring, and enhancing the convenience and accuracy of the connection.

[0019] In some embodiments, the first silicone sealing ring has a Shore hardness of 65A, the second silicone sealing ring has a Shore hardness of 70A, the interference fit between the first silicone sealing ring and the groove is 0.3-0.5mm, and the compression of the first silicone sealing ring is 1.2-1.8mm.

[0020] The softer first silicone sealing ring ensures a good fit between the second flange face and the socket, while the harder second silicone sealing ring provides compressive support between the socket and the junction box, improving the sealing effect.

[0021] In some embodiments, the vent valve is provided with an expanded polytetrafluoroethylene membrane.

[0022] By installing an expanded polytetrafluoroethylene membrane on the vent valve, liquid water and particulate matter are prevented from entering the connector box, while air is allowed to circulate into the connector box.

[0023] In some embodiments, a connecting screw is provided on the vent valve, and the connecting screw is screwed to the outer wall of the plug box.

[0024] By using connecting screws to fix the vent valve to the plug box, the ease of disassembly and assembly of the vent valve and the stability of the connection are improved.

[0025] In some embodiments, a through slot is provided on the partition, and the insertion interface of the insertion box is located in the through slot.

[0026] By setting through slots on the partition, the plug-in interface of the plug box is placed in the through slot, so that the plug pins can be plugged into the plug interface to realize the power distribution function of the bus trunking.

[0027] Based on the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0028] By setting a first silicone sealing ring in the top groove of the socket box to abut against the second flange face inside the socket box, and setting a second silicone sealing ring at the bottom of the socket box to abut against the socket box, a double-layer sealing redundancy protection is provided. Even if a single sealing ring fails, it will not cause the seal between the socket box and the socket box to fail, thus improving the sealing performance. Furthermore, by using a vent valve set on the side wall of the socket box to conduct air through the inside of the socket box to balance the air pressure inside and outside the socket box, it is possible to prevent the sealing ring from deforming and failing due to negative pressure. This can improve the connection sealing effect between the socket box and the socket box and reduce maintenance costs. Attached Figure Description

[0029] Figure 1 This is a cross-sectional schematic diagram of the present invention;

[0030] Figure 2 This is a schematic diagram of the plug-in box of this utility model;

[0031] Figure 3 A schematic diagram of the insert box of this utility model.

[0032] Explanation of reference numerals in the attached figures:

[0033] 100, Insert box; 110, Groove; 120, First silicone sealing ring; 130, Circumferential groove; 131, Bend section; 132, Drain hole; 140, Drainage pipe; 200, Insert box; 210, Partition plate; 211, Through groove; 220, First flange face; 230, Second flange face; 240, Second silicone sealing ring; 300, Breathing valve; 310, Expanded polytetrafluoroethylene membrane. Detailed Implementation

[0034] To facilitate understanding of this utility model, the specific embodiments of this utility model will be described in more detail below with reference to the accompanying drawings.

[0035] Unless otherwise specified or defined, the terms "first," "second," etc., used in this document are for distinguishing names only and do not represent a specific number or order.

[0036] Unless otherwise stated or defined, the term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0037] It should be noted that in this article, "fixed to" or "connected to" can mean directly fixed to or connected to a component, or indirectly fixed to or connected to a component.

[0038] like Figure 1-3 As shown, the connection structure between the busbar trunking box 100 and the plug box 200 provided in this embodiment includes the box 100 and the plug box 200. A groove 110 is provided on the top of the box 100 around the periphery of the box 100. A first silicone sealing ring 120 is embedded in the groove 110, and the first silicone sealing ring 120 is interference-fitted with the groove 110.

[0039] A first flange surface 220 is formed at the bottom of the plug box 200, a partition 210 is provided inside the plug box 200, a second flange surface 230 is formed at the bottom of the partition 210, and a second silicone sealing ring 240 is fixed on the first flange surface 220.

[0040] The top of the insert box 100 extends through the first flange surface 220 to the position of the second flange surface 230, the first silicone sealing ring 120 abuts against the second flange surface 230, and the second silicone sealing ring 240 abuts against the insert box 100.

[0041] A vent valve 300 is provided on the side wall of the plug box 200, and the vent valve 300 opens to the interior of the plug box 200.

[0042] In some embodiments, a circumferential groove 130 is provided on the outer peripheral wall of the insert box 100, the circumferential groove 130 having at least two bent sections 131, the circumferential groove 130 being located between the first flange face 220 and the second flange face 230.

[0043] By providing a circumferential groove 130 on the outer peripheral wall of the socket 100 between the first flange face 220 and the second flange face 230, and the circumferential groove 130 having at least two bends 131, the path of condensate between the socket box 200 and the socket 100 to enter the interior of the socket 100 is extended, so as to prevent liquid water from entering the socket 100.

[0044] In some embodiments, a drain hole 132 is provided at the lowest point of the circumferential groove 130, and a drainage pipe 140 is provided on the plug box 200. The inlet of the drainage pipe 140 is inserted into the drain hole 132, and the outlet is located outside the plug box 200.

[0045] By setting a drain hole 132 at the lowest point of the surrounding groove 130, and inserting the inlet of the drainage pipe 140 on the plug box 200 into the drain hole 132, the liquid water in the surrounding groove 130 is drained out, further preventing liquid water from entering the plug box 100.

[0046] In some embodiments, the bending angle of the bend segment 131 of the circumferential groove 130 is ≥120°.

[0047] By setting the bending angle of the bending section 131 of the surrounding groove 130 to ≥120°, the path of condensate water intruding into the insert box 100 is further extended.

[0048] In some embodiments, a guide pin is provided at the bottom of the plug box 200, and a guide hole is provided on the plug box 100, wherein the guide pin is engaged with the guide hole.

[0049] By using a guide pin at the bottom of the connector box 200 to engage with the guide hole on the connector box 100, the precise alignment between the connector box 100 and the connector box 200 is improved, avoiding wear and tear on the sealing ring, and enhancing the convenience and accuracy of the connection.

[0050] In some embodiments, the first silicone sealing ring 120 has a Shore hardness of 65A, the second silicone sealing ring 240 has a Shore hardness of 70A, the interference fit between the first silicone sealing ring 120 and the groove 110 is 0.3-0.5mm, and the compression of the first silicone sealing ring 120 is 1.2-1.8mm.

[0051] The softer first silicone sealing ring 120 ensures a good fit between the second flange face 230 and the socket 100, while the harder second silicone sealing ring 240 provides compressive support between the socket 100 and the connector box 200, thus improving the sealing effect.

[0052] In some embodiments, the vent valve 300 is provided with an expanded polytetrafluoroethylene membrane 310.

[0053] By setting an expanded polytetrafluoroethylene membrane 310 on the vent valve 300, liquid water and particulate matter are blocked from entering the plug box 200, while air is allowed to flow into the plug box 200.

[0054] In some embodiments, a connecting screw is provided on the vent valve 300, and the connecting screw is screwed to the outer wall of the plug box 200.

[0055] By using connecting screws to fix the vent valve 300 to the plug box 200, the ease of disassembly and assembly of the vent valve 300 and the stability of the connection are improved.

[0056] In some embodiments, a through groove 211 is provided on the partition 210, and the insertion interface of the insertion box 100 is located in the through groove 211.

[0057] By setting a through slot 211 on the partition 210, the plug interface of the plug box 100 is placed in the through slot 211 so that the plug pin can be plugged into the plug interface to realize the power distribution function of the bus trunking.

[0058] The connection structure between the busbar duct junction box 100 and the connector box 200 provided in this embodiment, compared with the prior art, has a double-layer sealing redundancy protection mechanism. This mechanism involves setting a first silicone sealing ring 120 in the top groove 110 of the junction box 100 to abut against the second flange surface 230 inside the connector box 200, and setting a second silicone sealing ring 240 at the bottom of the connector box 200 to abut against the junction box 100. Even if a single sealing ring fails, it will not cause the seal between the junction box 100 and the connector box 200 to fail, thus improving the sealing performance. Furthermore, the use of a vent valve 300 on the side wall of the connector box 200 to conduct air pressure inside and outside the connector box 200 balances the air pressure inside and outside the connector box 200, preventing the sealing ring from deforming and failing due to negative pressure. This improves the connection sealing effect between the junction box 100 and the connector box 200 and reduces maintenance costs.

[0059] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to this utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A connection structure between a busbar trunking junction box (100) and a connector box (200), characterized in that, It includes a socket box (100) and a connector box (200). The top of the socket box (100) is provided with a groove (110) surrounding the periphery of the socket box (100). A first silicone sealing ring (120) is embedded in the groove (110) and the first silicone sealing ring (120) is interference-fitted with the groove (110). A first flange face (220) is formed at the bottom of the plug box (200), a partition (210) is provided inside the plug box (200), a second flange face (230) is formed at the bottom of the partition (210), and a second silicone sealing ring (240) is fixed on the first flange face (220). The top of the insert (100) extends through the first flange face (220) to the position of the second flange face (230), the first silicone sealing ring (120) abuts against the second flange face (230), and the second silicone sealing ring (240) abuts against the insert (100); A vent valve (300) is provided on the side wall of the plug box (200), and the vent valve (300) opens to the interior of the plug box (200).

2. The connection structure between the busbar trunking junction box (100) and the connector box (200) as described in claim 1, characterized in that, A circumferential groove (130) is provided on the outer peripheral wall of the insert box (100). The circumferential groove (130) has at least two bent sections (131) and is located between the first flange face (220) and the second flange face (230).

3. The connection structure between the busbar trunking junction box (100) and the connector box (200) as described in claim 2, characterized in that, A drain hole (132) is provided at the lowest point of the surrounding trench (130), and a drainage pipe (140) is provided on the plug box (200). The inlet of the drainage pipe (140) is inserted into the drain hole (132), and the outlet is located outside the plug box (200).

4. The connection structure between the busbar trunking junction box (100) and the connector box (200) as described in claim 3, characterized in that, The bending angle of the bending section (131) of the surrounding groove (130) is ≥120°.

5. The connection structure between the busbar trunking junction box (100) and the connector box (200) as described in any one of claims 1-4, characterized in that, A guide pin is provided at the bottom of the plug box (200), and a guide hole is provided on the plug box (100). The guide pin is engaged with the guide hole.

6. The connection structure between the busbar trunking junction box (100) and the connector box (200) as described in any one of claims 1-4, characterized in that, The first silicone sealing ring (120) has a Shore hardness of 65A, the second silicone sealing ring (240) has a Shore hardness of 70A, the interference between the first silicone sealing ring (120) and the groove (110) is 0.3-0.5mm, and the compression of the first silicone sealing ring (120) is 1.2-1.8mm.

7. The connection structure between the busbar trunking junction box (100) and the connector box (200) as described in any one of claims 1-4, characterized in that, The vent valve (300) is provided with an expanded polytetrafluoroethylene membrane (310).

8. The connection structure between the busbar trunking junction box (100) and the connector box (200) as described in claim 7, characterized in that, A connecting screw is provided on the vent valve (300), and the connecting screw is screwed to the outer wall of the plug box (200).

9. The connection structure between the busbar trunking junction box (100) and the connector box (200) as described in any one of claims 1-4, characterized in that, A through groove (211) is provided on the partition (210), and the insertion interface of the insertion box (100) is located in the through groove (211).

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