Anti-explosion and anti-corrosion interlocking control distribution box

Abstract

The utility model provides an anti-explosion and anti-corrosion interlocking control distribution box which comprises a wiring box body, a master control box body, a sub-control box body and an operation box body, and the butt joint surfaces of adjacent box bodies are provided with wire passing holes and fixing holes. The device further comprises a positive pressure detection pad, the positive pressure detection pad comprises a shaping framework, the shaping framework comprises an inner ring frame and an outer ring frame, the inner ring frame and the outer ring frame are connected through a connecting piece, the outer wall of the inner ring frame and the outer wall of the outer ring frame are wrapped with an inner sealing ring and an outer sealing ring respectively, and the inner sealing ring and the outer sealing ring are equal in thickness and used for being in contact sealing with the surfaces of adjacent box bodies. An air pressure sensor is arranged between the inner sealing ring and the outer sealing ring, and a signal line of the air pressure sensor penetrates through the inner ring frame or the inner sealing ring to reach the inner side of the inner sealing ring and penetrates into the box bodies through the line holes. The anti-explosion and anti-corrosion box has the advantages that the anti-explosion and anti-corrosion effects are good, physical isolation can be formed between the box bodies, and the sealing performance of the joints of the box bodies can be monitored in real time.

Description

Technical Field

[0001] This utility model relates to the field of distribution boxes, specifically to an explosion-proof and corrosion-resistant interlocking control distribution box. Background Technology

[0002] In some special cases, distribution boxes need to meet the requirements of explosion-proof and corrosion-proof. Generally, electrical components with different functions are installed in different boxes for physical isolation (such as physical isolation between incoming and outgoing wiring and circuit breakers). Sheet rubber gaskets are used to seal the joint surfaces between different boxes. The connection between boxes is often a screw connection (usually four screws). When the screws are tightened, the large contact area of ​​the sheet rubber gaskets reduces the pressure distributed on each unit area of ​​the sheet rubber gaskets after the screws are tightened, thus affecting the sealing performance. At the same time, it is impossible to monitor the sealing performance of each joint surface in real time. Utility Model Content

[0003] Based on the above problems, the purpose of this utility model is to provide an explosion-proof and corrosion-resistant interlocking control distribution box that has good explosion-proof and corrosion-resistant effects, can form physical isolation between the mutual enclosures, and can monitor the sealing of the connection between each enclosure in real time.

[0004] To address the above problems, the following technical solution is provided: an explosion-proof and corrosion-resistant interlocking control distribution box, comprising a box assembly, the box assembly including a wiring box, a main control box, a sub-control box and an operating box arranged sequentially along the wiring direction, the mating surfaces of adjacent boxes having wire-passing holes and fixing holes for passing fixing bolts; it also includes a positive pressure detection pad located between adjacent boxes with wire-passing holes, the positive pressure detection pad including a shaped frame, the shaped frame including an inner ring frame and an outer ring frame, the inner ring frame and the outer ring frame being connected by a connector, the outer walls of the inner ring frame and the outer ring frame respectively covered with an inner sealing ring and an outer sealing ring of equal thickness for sealing contact with the surface of adjacent boxes, a pressure sensor being provided between the inner sealing ring and the outer sealing ring, the signal line of the pressure sensor passing through the inner ring frame or the inner sealing ring to the inner side of the inner sealing ring and passing through the wire hole to each box.

[0005] The present invention is further configured such that the outer sealing ring has a sealing hole corresponding to the fixing hole, and the outer ring frame is disconnected at the position corresponding to the sealing hole to form a clearance opening.

[0006] The present invention is further provided that the inner sealing ring is provided with an outer wall that fits against the inner wall of the wire hole and is integrally connected with the inner sealing ring at both ends.

[0007] The present invention is further provided that the inner wall of the isolation bushing and the inner sealing ring is provided with adhesion grooves arranged at intervals along its axial direction to increase the adhesion of the filler.

[0008] The present invention is further configured such that the inner ring frame, the outer ring frame and the connecting parts are integrally injection molded.

[0009] The present invention is further configured such that the inner sealing ring and the outer sealing ring are rubber rings, and the two are connected to the inner ring frame and the outer ring frame by secondary injection molding.

[0010] The present invention is further configured such that the boxes are arranged in a grid pattern; the sub-control boxes are located in the first quadrant, the main control box is located in the second quadrant, the wiring box is located in the third quadrant, and the operation box is located in the fourth quadrant; or the sub-control boxes are located in the first quadrant, the main control box is located in the second quadrant, the operation box is located in the third quadrant, and the wiring box is located in the fourth quadrant.

[0011] The present invention is further configured such that the lower end of the junction box is provided with an explosion-proof isolation connector for the incoming line; and the lower end of the operating box is provided with an explosion-proof isolation connector for the outgoing line.

[0012] The present invention is further configured such that: the junction box is provided with an incoming terminal block, and its cover is provided with a power indicator light; the main control box is provided with a main circuit breaker; the sub-control boxes are provided with explosion-proof and corrosion-resistant circuit breakers; and the operation box is provided with an outgoing terminal block, and its cover is provided with an operation indicator light.

[0013] The present invention is further configured such that the air pressure sensor is connected to a pressure monitoring and warning module.

[0014] The beneficial effects of this utility model are:

[0015] 1. The fixed frame ensures the relative position of the inner and outer sealing rings through the inner ring frame, outer ring frame, and connectors. When the positive pressure detection pad is sandwiched between adjacent boxes, the inner sealing ring is located at the wire hole position of the two boxes. As the fixing bolts are tightened, the inner and outer sealing rings are squeezed, causing them to contact and seal with the surface of the adjacent boxes. At the same time, the pressure between the inner and outer sealing rings is increased by the squeeze. This pressure is detected by the air pressure sensor and the pressure data is output through the signal line, which is convenient for the terminal pressure monitoring and warning module to monitor. Once the inner or outer sealing ring of the positive pressure detection pad fails, causing the positive pressure established between the inner and outer sealing rings to drop, it can be detected in time by the air pressure sensor and a seal failure warning will be issued. This is beneficial for replacement and maintenance in advance before the seal completely fails.

[0016] 2. The fixing bolts pass through the fixing holes between adjacent housings and also through the sealing holes, ensuring a seal for the fixing holes; the clearance opening provides clearance space for the sealing holes.

[0017] 3. When adjacent enclosures are connected, the isolation bushing is inserted into the cable passage hole, and the cable passes through the isolation bushing. The isolation bushing provides isolation for the cable when it passes through the adjacent enclosure, and also provides better isolation for the filling material.

[0018] 4. After the filler is filled, the adhesion groove can improve the adhesion between the filler and the packing material;

[0019] 5. Secondary injection molding can effectively improve the connection strength between the inner sealing ring, the outer sealing ring and the shaping skeleton, and also effectively ensure the overall precision and sealing performance.

[0020] 6. The pressure monitoring and warning module is used to monitor the pressure at each positive pressure detection pad location. When the pressure decreases, it can issue a warning of seal failure. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the box assembly structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the first full cross-sectional structure of the box assembly of this utility model.

[0023] Figure 3 This is a schematic diagram of the second full sectional structure of the box assembly of this utility model.

[0024] Figure 4 This is a three-dimensional structural diagram of the positive pressure detection pad of this utility model.

[0025] Figure 5 This is a three-dimensional structural diagram of the positive pressure detection pad of this utility model.

[0026] The labels in the diagram have the following meanings: 10-Jack box; 11-Incoming explosion-proof isolation connector; 12-Incoming terminal block; 13-Power indicator light; 20-Main control box; 21-Main circuit breaker; 30-Sub-control box; 31-Explosion-proof and corrosion-resistant circuit breaker; 40-Operating box; 41-Outgoing explosion-proof isolation connector; 42-Outgoing terminal block; 43-Operating indicator light; 50-Wire passage hole; 51-Fixing hole; 60-Fixing bolt; 70-Positive pressure detection pad; 71-Shaped frame; 711-Inner ring frame; 712-Outer ring frame; 7121-Leaning opening; 713-Connector; 72-Inner sealing ring; 73-Outer sealing ring; 731-Sealing hole; 74-Pressure sensor; 741-Signal line; 75-Isolation bushing; 751-Attachment groove. Detailed Implementation

[0027] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0028] refer to Figures 1 to 5,like Figures 1 to 5 The explosion-proof and corrosion-resistant interlocking control distribution box shown includes a box assembly, which includes a wiring box 10, a main control box 20, a sub-control box 30, and an operating box 40 arranged sequentially along the wiring direction. The mating surfaces of adjacent boxes are provided with wire-passing holes 50 for threading wires and fixing holes 51 for passing fixing bolts 60. It also includes a positive pressure detection pad 70 located between adjacent boxes with wire-passing holes 50. The positive pressure detection pad 70 includes a shaped frame 71, which includes an inner ring frame 711 and an outer ring frame 711. The inner ring frame 711 and the outer ring frame 712 are connected by a connector 713. The outer walls of the inner ring frame 711 and the outer ring frame 712 are respectively covered with an inner sealing ring 72 and an outer sealing ring 73 of equal thickness for sealing with the surfaces of adjacent boxes. A pressure sensor 74 is provided between the inner sealing ring 72 and the outer sealing ring 73. The signal line 741 of the pressure sensor 74 passes through the inner ring frame 711 or the inner sealing ring 72 to the inside of the inner sealing ring 72 and passes through the wire hole 50 to each box.

[0029] In the above structure, the fixed frame 71 ensures the relative position between the inner sealing ring 72 and the outer sealing ring 73 through the inner ring frame 711, the outer ring frame 712 and the connector 713. When the positive pressure detection pad 70 is sandwiched between adjacent boxes, the inner sealing ring 72 is located at the wire hole 50 of the two boxes. As the fixing bolt 60 tightens, it squeezes the inner sealing ring 72 and the outer sealing ring 73, so that they contact and seal with the surface of the adjacent box. At the same time, the pressure between the inner sealing ring 72 and the outer sealing ring 73 is increased by the compression. This pressure is detected by the air pressure sensor 74 and the pressure data is output through the signal line 741, which is convenient for the terminal pressure measurement and warning module (not shown in the figure) to monitor. Once the inner sealing ring 72 or the outer sealing ring 73 of the positive pressure detection pad 70 fails, causing the positive pressure established between the inner sealing ring 72 and the outer sealing ring 73 to drop, it can be detected in time by the air pressure sensor 74 and a seal failure warning will be issued. This is beneficial for replacement and maintenance in advance before the seal completely fails.

[0030] In this embodiment, the outer sealing ring 73 is provided with a sealing hole 731 corresponding to the fixing hole 51, and the outer ring frame 712 is disconnected at the position corresponding to the sealing hole 731 to form a clearance opening 7121.

[0031] In the above structure, the fixing bolt 60 passes through the fixing hole 51 between adjacent boxes and also through the sealing hole 731, thus ensuring that the fixing hole 51 is sealed; the clearance opening 7121 provides clearance space for the setting of the sealing hole 731.

[0032] In this embodiment, the inner sealing ring 72 is also provided with an isolation bushing 75 at both ends, the outer wall of which fits against the inner wall of the wire hole 50 and is integrally connected with the inner sealing ring 72.

[0033] In the above structure, when adjacent enclosures are connected, the isolation bushing 75 is inserted into the cable passage hole 50, and the cable passes through the isolation bushing 75. The isolation bushing 75 provides isolation for the cable when the cable passes through the adjacent enclosure, and at the same time provides better isolation for the filling of the filler (existing technology, generally epoxy resin).

[0034] In this embodiment, the inner walls of the isolation bushing 75 and the inner sealing ring 72 are provided with adhesion grooves 751 arranged at intervals along their axial direction to increase the adhesion of the filler (existing technology, generally epoxy resin).

[0035] In the above structure, after the filler (existing technology, generally epoxy resin) is filled, the adhesion groove 751 can improve the adhesion to the filler (existing technology, generally epoxy resin).

[0036] In this embodiment, the inner ring frame 711, the outer ring frame 712, and the connector 713 are integrally injection molded.

[0037] In the above structure, the overall dimensional accuracy of the shaped frame 71 is guaranteed.

[0038] In this embodiment, the inner sealing ring 72 and the outer sealing ring 73 are rubber rings, and they are connected to the inner ring frame 711 and the outer ring frame 712 through secondary injection molding.

[0039] In the above structure, secondary injection molding can effectively improve the connection strength between the inner sealing ring 72, the outer sealing ring 73 and the shaping skeleton 71, while also effectively ensuring the overall precision and sealing performance.

[0040] In this embodiment, the boxes are arranged in a grid pattern; the sub-control box 30 is located in the first quadrant, the main control box 20 is located in the second quadrant, the wiring box 10 is located in the third quadrant, and the operation box 40 is located in the fourth quadrant; or the sub-control box 30 is located in the first quadrant, the main control box 20 is located in the second quadrant, the operation box 40 is located in the third quadrant, and the wiring box 10 is located in the fourth quadrant.

[0041] In this embodiment, the lower end of the junction box 10 is provided with an explosion-proof inlet connector 11; the lower end of the operating box 40 is provided with an explosion-proof outlet connector 41.

[0042] In this embodiment, the junction box 10 is provided with an incoming terminal block 12, and its cover is provided with a power indicator light 13; the main control box 20 is provided with a main circuit breaker 21; the sub-control box 30 is provided with an explosion-proof and corrosion-resistant circuit breaker 31; the operation box 40 is provided with an outgoing terminal block 42, and its cover is provided with an operation indicator light 43.

[0043] In this embodiment, the pressure sensor 74 is connected to a pressure monitoring and warning module (not shown in the figure).

[0044] In the above structure, the pressure monitoring and warning module (not shown in the figure) is used to monitor the pressure at each positive pressure detection pad 70 position, and can issue a seal failure warning when the pressure decreases.

[0045] Figures 1 to 3 Due to the small gaps between the various boxes, the positive pressure detection pad 70 was not drawn.

[0046] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model. These improvements and modifications assumed above should also be considered within the protection scope of the present utility model.

Claims

1. An explosion-proof and corrosion-resistant interlocking control distribution box, comprising a box assembly, wherein the box assembly includes a wiring box, a main control box, a sub-control box, and an operating box arranged sequentially along the wiring direction, and the mating surfaces of adjacent boxes are provided with wire-passing holes for wires to pass through and fixing holes for fixing bolts to pass through, characterized in that: It also includes a positive pressure detection pad located between adjacent enclosures with wire holes. The positive pressure detection pad includes a shaped frame, which includes an inner ring frame and an outer ring frame. The inner ring frame and the outer ring frame are connected by a connector. The outer walls of the inner ring frame and the outer ring frame are respectively covered with an inner sealing ring and an outer sealing ring of equal thickness for sealing with the surface of the adjacent enclosure. A pressure sensor is provided between the inner sealing ring and the outer sealing ring. The signal line of the pressure sensor passes through the inner ring frame or the inner sealing ring to the inside of the inner sealing ring and passes through the wire hole to each enclosure.

2. The explosion-proof and corrosion-resistant interlocking control distribution box according to claim 1, characterized in that: The outer sealing ring is provided with a sealing hole corresponding to the fixing hole, and the outer ring frame is disconnected at the position of the sealing hole to form a clearance opening.

3. The explosion-proof and corrosion-proof interlock control distribution box according to claim 1 or 2, characterized in that: The inner sealing ring is also provided with an isolation bushing at both ends, the outer wall of which fits against the inner wall of the wire hole and is integrally connected with the inner sealing ring.

4. The explosion-proof and corrosion-proof interlocked control distribution box according to claim 3, characterized in that: The inner wall of the isolation bushing and the inner sealing ring is provided with adhesion grooves arranged at intervals along its axial direction to increase the adhesion of the filler.

5. The explosion-proof and corrosion-proof interlocked control distribution box according to claim 1, characterized in that: The inner ring frame, outer ring frame, and connecting parts are integrally injection molded.

6. The explosion-proof and corrosion-proof interlocked control distribution box according to claim 1, characterized in that: The inner and outer sealing rings are rubber rings, and they are connected to the inner and outer ring frames through secondary injection molding.

7. The explosion-proof and corrosion-proof interlocked control distribution box according to claim 1, characterized in that: The enclosures are arranged in a grid pattern; the sub-control enclosures are located in the first quadrant, the main control enclosure is located in the second quadrant, the wiring enclosure is located in the third quadrant, and the operation enclosure is located in the fourth quadrant; or the sub-control enclosures are located in the first quadrant, the main control enclosure is located in the second quadrant, the operation enclosure is located in the third quadrant, and the wiring enclosure is located in the fourth quadrant.

8. The explosion-proof and corrosion-resistant interlocking control distribution box according to claim 1 or 7, characterized in that: The lower end of the junction box is equipped with an explosion-proof isolation connector for the incoming line; the lower end of the operating box is equipped with an explosion-proof isolation connector for the outgoing line.

9. The explosion-proof and corrosion-resistant interlocking control distribution box according to claim 8, characterized in that: The junction box contains an incoming terminal block, and its cover has a power indicator light; the main control box contains a main circuit breaker; the sub-control boxes contain explosion-proof and corrosion-resistant circuit breakers; the operation box contains an outgoing terminal block, and its cover has an operation indicator light.

10. The explosion-proof and corrosion-proof interlocked control distribution box according to claim 1, characterized in that: The pressure sensor is connected to a pressure monitoring and warning module.

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