Corrosion-resistant petrochemical engineering electrical junction box

Abstract

The utility model provides a corrosion-resistant petrochemical engineering electrical junction box, which relates to the field of electrical junction boxes, and comprises a petrochemical engineering electrical explosion-proof junction box, the opposite sides of the petrochemical engineering electrical explosion-proof junction box are respectively connected with a wire inlet and outlet pipe and a fixed pin, and the inner wall of the wire inlet and outlet pipe is provided with an internal thread; a base is arranged in the petrochemical engineering electrical explosion-proof junction box, wiring assemblies are arranged on the two sides of the base, the wiring assemblies are close to inlet and outlet wire pipes on the two sides respectively, the lower sides of the wiring assemblies are connected with wire noses, the perforated ends of the wire noses are fixed to the upper side of the base, and meanwhile the perforated ends of the wire noses are connected with conductive blocks. A wire adjusting assembly is arranged between the conductive blocks, and the wire adjusting assembly comprises an upper conductive rod and a lower conductive rod. The petrochemical engineering electrical explosion-proof junction box solves the problems that wiring of an existing petrochemical engineering electrical explosion-proof junction box for petrochemical engineering is troublesome, and inlet and outlet positions of cables are inconvenient to adjust.

Description

Technical Field

[0001] This utility model relates to the field of electrical junction box technology, specifically to a corrosion-resistant petrochemical electrical junction box. Background Technology

[0002] In the process of using electricity in engineering projects, if the power supply network is long, has bends, or is connected in series or parallel, junction boxes are needed to connect the line joints. Especially in the petrochemical industry, due to the flammable and explosive environment, explosion-proof electrical boxes are also required.

[0003] A search revealed existing technology (publication number: CN217115507U), which describes "a petrochemical electrical explosion-proof junction box, comprising a box body and a sealing cover. The sealing cover is fixed to the upper end of the box body via a threaded connection. The box body has an interface, at which a connecting cylinder is fixed. The connecting cylinder is a cylinder open at both ends, with internal threads inside. A fixing plate is provided on the outer wall of the box body, the lower surface of which is flush with the lower surface of the bottom of the box body. A fixing block is also provided at the center of the inner bottom of the box body. This utility model has good explosion-proof and waterproof performance; and through integrated casting, it has high strength, effectively preventing the junction box from cracking due to small-scale combustion and explosion inside the box body and sealing cover, thus preventing spark leakage and explosion, resulting in high safety."

[0004] While existing explosion-proof junction boxes for petrochemical and electrical applications have achieved waterproof and explosion-proof effects and ensured proper grounding, they still have some shortcomings. These include the need to connect cable ends with lugs and then secure them to the box with bolts, which is cumbersome. Furthermore, if the cable is incorrectly connected, the bolts need to be removed, the cable pulled out, and the cable position readjusted, making it inconvenient to use. Utility Model Content

[0005] To overcome the shortcomings of existing technologies, a corrosion-resistant petrochemical electrical junction box is provided to solve the problems of complicated wiring and inconvenience in adjusting the inlet and outlet positions of cables in existing petrochemical electrical explosion-proof junction boxes.

[0006] To achieve the above objectives, a corrosion-resistant petrochemical electrical junction box is provided, comprising: a petrochemical electrical explosion-proof junction box, wherein inlet and outlet conduits and fixing feet are respectively connected to opposite sides of the petrochemical electrical explosion-proof junction box, and the inner wall of the inlet and outlet conduits is provided with internal threads; a base is provided inside the petrochemical electrical explosion-proof junction box, and wiring assemblies are provided on both sides of the base, and the wiring assemblies are respectively close to the inlet and outlet conduits on both sides; a wire lug is connected to the lower side of the wiring assembly, and the open end of the wire lug is fixed to the upper side of the base; at the same time, a conductive block is connected to one end of the open end of the wire lug; a wire adjusting assembly is provided between the conductive blocks, and the wire adjusting assembly includes an upper conductive rod and a lower conductive rod, and both ends of the upper conductive rod and the lower conductive rod face the conductive block.

[0007] Furthermore, the wiring assembly includes a crossbar with both ends fixed to the inner walls of the two sides of the petrochemical electrical explosion-proof junction box, and a top block is connected to the upper side of the crossbar, and a jumper plate is connected between the top blocks.

[0008] Furthermore, the jumper plate is screwed with a wire clamping bolt, which rotates through the crossbar and is connected to a pressure block at its lower end. A telescopic rod is connected between the pressure block and the crossbar.

[0009] Furthermore, the pressure block includes an upper rectangular block, and the lower end of the rectangular block is connected to an isosceles trapezoidal metal block, with the narrow end of the metal block facing downwards.

[0010] Furthermore, the base has steps on both sides facing the wire lug downwards, and the upper end of the base is connected to a threaded post, and the connection opening end of the wire lug is fixed to the threaded post by a fixing nut.

[0011] Furthermore, the wiring assembly includes a positioning shaft fixed at the center of the base, and the middle parts of the upper and lower conductive rods are both hinged to the positioning shaft, and an insulating plate is glued to the lower end face of the upper conductive rod.

[0012] Furthermore, the upper conductive rod has upper conductive posts connected to its lower ends, and the lower conductive rod has lower conductive posts connected to its lower ends, with the upper conductive posts being longer than the lower conductive posts.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. In use, insert the cable ends to be connected into the petrochemical electrical explosion-proof junction box using the inlet and outlet conduits. Then, insert the stripped copper wire into the outer crimp tube of the lug. Rotate the crimping bolt with a wrench to drive the crimping block downward. The specific shape of the crimping block increases the pressure applied to the upper side of the lug crimp tube. With continuous rotation, the lug crimp tube is squeezed and deformed, thus fixing the internal copper wire (single or multiple strands) into the lug crimp tube. Then, the connection of the two cables is achieved by rotating the conductive block. This avoids the process of first installing the lug and then fixing it to the junction box, thus achieving convenient wiring.

[0015] 2. When adjusting the position of cables that need to be connected or misconnected, first disassemble the already connected conductive blocks (the conductive blocks have threaded holes at their outer ends, and the two conductive blocks are connected by nuts. In the initial state, the conductive blocks on opposite sides are in a fixed connection state). Then separate the upper and lower conductive rods included in the cable adjustment assembly, and then insert the conductive posts into the threaded holes of the conductive blocks that need to be connected at staggered positions. Then tighten the conductive rods downwards by locking the nut, so that the conductive posts are pressed into the threaded holes of the conductive blocks, thereby realizing the adjustment of the cable inlet and outlet positions. Attached Figure Description

[0016] Figure 1 This is a top view of the overall structure of an embodiment of the present utility model.

[0017] Figure 2 This is a side view of the wiring assembly according to an embodiment of the present invention.

[0018] Figure 3 This is a cross-sectional view of the wiring assembly according to an embodiment of the present invention.

[0019] Figure 4 This is a three-dimensional structural diagram of the wiring assembly according to an embodiment of the present utility model.

[0020] In the diagram: 1. Petrochemical electrical explosion-proof junction box; 11. Inlet / outlet conduit; 12. Fixing foot; 13. Wiring assembly; 131. Crossbar; 132. Wire clamping bolt; 133. Top block; 134. Telescopic rod; 135. Pressure block; 136. Jumper plate; 14. Wire lug; 141. Conductive block; 15. Base; 151. Step; 152. Threaded post; 153. Fixing nut; 16. Adjustment assembly; 161. Lower conductive rod; 162. Upper conductive rod; 163. Positioning shaft; 164. Insulating plate; 165. Lower conductive post; 166. Upper conductive post. Detailed Implementation

[0021] Reference Figures 1 to 4As shown, this utility model provides a corrosion-resistant petrochemical electrical junction box, including: a petrochemical electrical explosion-proof junction box 1, with inlet / outlet conduits 11 and fixing feet 12 connected to opposite sides of the petrochemical electrical explosion-proof junction box 1, and the inner wall of the inlet / outlet conduits 11 having internal threads, the petrochemical electrical explosion-proof junction box 1 having a base 15 inside, and wiring assemblies 13 on both sides of the base 15, with the wiring assemblies 13 close to the inlet / outlet conduits 11 on both sides, a wire lug 14 connected to the lower side of the wiring assembly 13, and the open end of the wire lug 14 fixed to the upper side of the base 15, while one end of the open end of the wire lug 14 is connected to a conductive block 141, and a wire adjusting assembly 16 is provided between the conductive blocks 141, and the wire adjusting assembly 16 includes an upper conductive rod 162 and a lower conductive rod 161, with both ends of the upper conductive rod 162 and the lower conductive rod 161 facing the conductive block 141.

[0022] In this embodiment, the petrochemical electrical explosion-proof junction box 1 is made entirely of die-cast aluminum, and the outer surface of the petrochemical electrical explosion-proof junction box 1 is coated with anti-corrosion material.

[0023] Specifically, the inlet and outlet conduit 11 in this application has four metal pipes, two inlet and two outlet, and the inside of the pipe is equipped with a sealing sleeve, so that the cable passes through the sealing sleeve to achieve the waterproof and dustproof effect of the pipe.

[0024] Specifically, one end of the conductive block 141 is connected to the base 15, and the other end has a threaded hole. In the initial state, the conductive blocks 141 are fixedly connected in pairs, while the base 15 is made of rubber insulating material.

[0025] like Figure 2 and Figure 3 As shown, the wiring assembly 13 includes a horizontal bar 131 with both ends fixed to the inner walls of the two sides of the petrochemical electrical explosion-proof junction box 1. A top block 133 is connected to the upper side of the horizontal bar 131, and a jumper plate 136 is connected between the top blocks 133. A wire clamping bolt 132 is screwed into the jumper plate 136. The wire clamping bolt 132 rotates through the horizontal bar 131, and a pressure block 135 is connected to the lower end of the wire clamping bolt 132. At the same time, a telescopic rod 134 is connected between the pressure block 135 and the horizontal bar 131. The pressure block 135 includes a rectangular block on the upper side, and an isosceles trapezoidal metal block is connected to the lower end of the rectangular block, with the narrow end of the metal block facing downward.

[0026] Specifically, the rectangular block on the upper side of the pressure block 135 is made of insulating material, and the rectangular block is rotatably connected to the upper pressure bolt 132.

[0027] In a preferred embodiment, by rotating the wire clamping bolt 132, the downward driving block 135 is driven, causing one end of the hollow tubular wire lug 14 to be squeezed and deformed, thereby pressing the exposed copper wire tightly.

[0028] like Figure 2 and Figure 4 As shown, the base 15 has downward steps 151 on both sides facing the wire lug 14, and the upper end of the base 15 is connected to a threaded post 152. The connection opening end of the wire lug 14 is fixed to the threaded post 152 by a fixing nut 153. The wire adjustment assembly 16 includes a positioning shaft 163 fixed at the center of the base 15. The middle parts of the upper conductive rod 162 and the lower conductive rod 161 are both hinged to the positioning shaft 163. An insulating plate 164 is glued to the lower end face of the upper conductive rod 162. The two lower ends of the upper conductive rod 162 are connected to upper conductive posts 166, and the two lower ends of the lower conductive rod 161 are connected to lower conductive posts 165. The length of the upper conductive post 166 is greater than that of the lower conductive post 165.

[0029] Specifically, the conductive block 141 has open ends at both ends, and one end is sleeved on the threaded post 152 and fixed by the fixing nut 153. When the angle needs to be adjusted, the fixing nut 153 can be loosened slightly.

[0030] Specifically, the upper conductive rod 162 and the lower conductive rod 161 are rotatably connected, and during wire adjustment, the upper conductive rod 162 and the lower conductive rod 161 never come into contact with each other through the insulating plate 164.

[0031] Specifically, the outer wall of the positioning shaft 163 is provided with external threads. When locked by the locking nut, it presses the conductive plate downward, thereby keeping the conductive post and the outer end of the conductive block 141 in a fixed connection.

[0032] In use, the cable ends to be connected are inserted into the petrochemical electrical explosion-proof junction box using the inlet and outlet conduits. Then, the stripped copper wire is inserted into the outer clamping tube of the lug. Rotating the clamping bolt with a wrench causes the clamping bolt to move downwards, increasing the pressure applied to the upper side of the lug clamping tube. Continuous rotation deforms the lug clamping tube, fixing the internal copper wire inside. The cable ends are then connected by rotating the conductive block, avoiding the need to first install the lug and then fix it to the junction box, thus simplifying the wiring process. When adjusting the position of connected or misconnected cables, the already connected conductive block is first disassembled. Then, the upper and lower conductive rods of the cable adjustment assembly are separated, and the conductive posts are inserted into the threaded holes of the conductive blocks to be connected, staggered in position. Finally, the conductive rods are tightened downwards with the lock nut, pressing the conductive posts into the threaded holes of the conductive blocks, thus adjusting the cable inlet and outlet positions.

[0033] This utility model of a corrosion-resistant petrochemical electrical junction box effectively solves the problems of cumbersome wiring and inconvenience in adjusting the inlet and outlet positions of cables in existing petrochemical explosion-proof electrical junction boxes. Based on existing corrosion-resistant petrochemical electrical junction box technology, it simplifies the wiring steps of petrochemical explosion-proof electrical junction boxes and facilitates the adjustment of inlet and outlet cables.

Claims

1. A corrosion-resistant petrochemical electrical junction box, comprising: A petrochemical electrical explosion-proof junction box (1) is provided with an inlet / outlet pipe (11) and a fixing foot (12) respectively connected to opposite sides of the junction box (1), and the inner wall of the inlet / outlet pipe (11) is provided with an internal thread. The junction box (1) is characterized in that: a base (15) is provided inside the junction box (1), and wiring components (13) are provided on both sides of the base (15), and the wiring components (13) are close to the inlet / outlet pipes (11) on both sides respectively. A wire lug (14) is connected to the lower side of the wiring component (13), and the opening end of the wire lug (14) is fixed to the upper side of the base (15). At the same time, a conductive block (141) is connected to one end of the opening of the wire lug (14). A wire adjustment component (16) is provided between the conductive blocks (141), and the wire adjustment component (16) includes an upper conductive rod (162) and a lower conductive rod (161), and both ends of the upper conductive rod (162) and the lower conductive rod (161) face the conductive block (141).

2. The corrosion-resistant petrochemical electrical junction box according to claim 1, characterized in that, The wiring assembly (13) includes a crossbar (131) with both ends fixed to the inner walls of the two sides of the petrochemical electrical explosion-proof junction box (1), and a top block (133) is connected to the upper side of the crossbar (131), and a jumper plate (136) is connected between the top blocks (133).

3. A corrosion-resistant petrochemical electrical junction box according to claim 2, characterized in that, The cross-connector plate (136) is screwed with a wire clamping bolt (132), and the wire clamping bolt (132) rotates through the crossbar (131). The lower end of the wire clamping bolt (132) is connected to a pressure block (135), and a telescopic rod (134) is connected between the pressure block (135) and the crossbar (131).

4. A corrosion-resistant petrochemical electrical junction box according to claim 3, characterized in that, The pressure block (135) includes a rectangular block on the upper side, and the lower end of the rectangular block is connected to a metal block with an isosceles trapezoidal structure, with the narrow end of the metal block facing downwards.

5. A corrosion-resistant petrochemical electrical junction box according to claim 1, characterized in that, The base (15) has steps (151) on both sides facing the wire lug (14) downwards, and the upper end of the base (15) is connected to a threaded post (152), and the connection opening end of the wire lug (14) is fixed to the threaded post (152) by a fixing nut (153).

6. A corrosion-resistant petrochemical electrical junction box according to claim 1, characterized in that, The wiring assembly (16) includes a positioning shaft (163) fixed at the center of the base (15), and the middle parts of the upper conductive rod (162) and the lower conductive rod (161) are both hinged to the positioning shaft (163), and an insulating plate (164) is glued to the lower end face of the upper conductive rod (162).

7. A corrosion-resistant petrochemical electrical junction box according to claim 1, characterized in that, The upper conductive rod (162) has upper conductive posts (166) connected to its lower ends, and the lower conductive rod (161) has lower conductive posts (165) connected to its lower ends, and the upper conductive post (166) is longer than the lower conductive post (165).

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