Wiring junction box for relay protection of thermal power plant

Abstract

The utility model relates to the technical field of junction boxes, and discloses a junction box for relay protection of a thermal power plant, which comprises a box body and a box cover, the bottom of the box cover is fixedly connected with a fixing ring, the inner wall of the fixing ring is fixedly connected with a plurality of springs I, the other ends of the springs I are fixedly connected with a sliding ring, and the sliding ring is fixedly connected with the box cover. The top of the box body is fixedly connected with a sliding ring, the outer portion of the sliding ring is slidably connected to the inner wall of the fixing ring, the top of the box body is fixedly connected with a supporting ring, the outer portion of the supporting ring is slidably connected to the inner wall of the fixing ring, and the inner wall of the box body is fixedly connected with a supporting assembly used for supporting a locking structure. According to the utility model, the position change of the two connecting rods drives the two horizontal rotating blocks to rotate to be in a vertical state, so that the rotating blocks and the rotating ring are locked, namely the box cover and the box body are locked, the invasion of moisture, dust and other external pollutants can be effectively prevented, and the risks of short circuit and fault of wiring are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of junction boxes, in particular to a junction box for relay protection in thermal power plants. Background Art

[0002] The junction box for relay protection in thermal power plants is a crucial component of the power system, primarily responsible for wiring and signal distribution for relay protection devices. It centrally manages and protects various current and voltage signals by routing them into the junction box, ensuring accurate signal transmission. Junction boxes typically feature excellent insulation and environmental resistance, protecting against electrical interference and improving system reliability and safety. Furthermore, a well-designed wiring design can reduce troubleshooting difficulties and improve maintenance efficiency.

[0003] In the prior art, some wiring junction boxes for relay protection in thermal power plants use screw-open covers, which results in poor airtightness. This can bring multiple disadvantages. External moisture and dust may penetrate into the interior, causing wiring short circuits or failures, affecting the normal operation of the equipment. Corrosive substances in the environment will accelerate the aging of wiring components. Therefore, a wiring junction box for relay protection in thermal power plants is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a wiring junction box for relay protection in thermal power plants, aiming to improve the problem that some wiring junction boxes in the existing technology use screw-open covers, which have poor airtightness, allow moisture and dust to penetrate, cause short circuit failures and component aging.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The wiring junction box for relay protection of a thermal power plant comprises a box body and a box cover, wherein the bottom of the box cover is fixedly connected to a fixing ring, the inner wall of the fixing ring is fixedly connected to a plurality of springs, the other ends of the plurality of springs are fixedly connected to a sliding ring, the outer portion of the sliding ring is slidably connected to the inner wall of the fixing ring, the top of the box body is fixedly connected to a supporting ring, the outer portion of the supporting ring is slidably connected to the inner wall of the fixing ring, the inner wall of the box body is fixedly connected to a supporting assembly for supporting a locking structure, the other end of the supporting assembly is fixedly connected to the inner wall of the box cover, the interior of the supporting assembly is rotatably connected to two rotating blocks, the outer portions of the two rotating blocks are fixedly connected to connecting rods, the other ends of the two connecting rods are rotatably connected to rotating columns, and the outer portions of the two rotating columns are slidably connected to movable columns.

[0007] As a further description of the above technical solution:

[0008] The supporting assembly includes two rotating rings, the outer portion of each rotating ring is fixedly connected to the inner wall of the box body, and the outer portion of the other rotating ring is fixedly connected to the inner wall of the box cover.

[0009] As a further description of the above technical solution:

[0010] A second spring is fixedly connected to the inner wall of the rotating column, and the other end of the second spring is fixedly connected to the inner wall of the movable column.

[0011] As a further description of the above technical solution:

[0012] The other end of the movable column is rotatably connected to the inner wall of the box body, and the other end of the other movable column is rotatably connected to the inner wall of the box cover.

[0013] As a further description of the above technical solution:

[0014] The interior of the box body is detachably connected with a movable disk, the interior of the box body is detachably connected with a plurality of branching ports, and the exterior of the movable disk is fixedly connected with a fixing column.

[0015] As a further description of the above technical solution:

[0016] The exterior of the fixing column is detachably connected to an anti-touch box, the interior of the anti-touch box is fixedly connected to a fixing shell, and the inner wall of the fixing shell is slidably connected to a sliding shell.

[0017] As a further description of the above technical solution:

[0018] The inner wall of the sliding shell is movably connected to two movable balls, and the outer parts of the two movable balls are coupled and connected to the outside of the fixing column.

[0019] As a further description of the above technical solution:

[0020] The inner wall of the anti-touch box is fixedly connected with a spring three, the interior of the sliding shell is fixedly connected with a magnetic disk, the other end of the spring three is fixedly connected to the outside of the magnetic disk, and the outside of the fixed column is slidably connected to the outside of the magnetic disk.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the present invention, the second return spring drives the rotating column to restore its position, thereby driving one end of the two connecting rods to change position. The position change of the two connecting rods drives the two horizontal rotating blocks to rotate into a vertical state, thereby locking the rotating blocks and the rotating ring, that is, locking the box cover and the box body, which can effectively prevent the intrusion of moisture, dust and other external contaminants, and reduce the risk of wiring short circuit and failure.

[0023] 2. In the present invention, the fixed column can be separated from the anti-touch box through the bottom of the anti-touch box, so that the fixed column can drive the movable plate to separate from the outlet before wiring operation can be carried out. This can effectively avoid the damage caused by accidental touch and opening of the outlet of the connecting line before use of the completed branched line, thereby reducing unnecessary downtime and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional diagram of the wiring junction box for relay protection in a thermal power plant proposed by the present utility model;

[0025] Figure 2 This is a schematic structural diagram of the locking assembly of the wiring junction box for relay protection in a thermal power plant proposed by the present invention;

[0026] Figure 3 This is a schematic structural diagram of the sealing assembly of the wiring junction box for relay protection in thermal power plants proposed by the present invention;

[0027] Figure 4 This is a schematic structural diagram of the anti-touch assembly of the wiring junction box for relay protection in thermal power plants proposed by the present invention;

[0028] Figure 5 for Figure 2 Enlarged view of point A in the middle;

[0029] Figure 6 for Figure 4 Enlarged view of point B in the middle;

[0030] Legend:

[0031] 1. Box body; 2. Box cover; 3. Fixed ring; 4. Spring 1; 5. Sliding ring; 6. Support ring; 7. Rotating ring; 8. Rotating block; 9. Connecting rod; 10. Rotating column; 11. Movable column; 12. Spring 2; 13. Branching port; 14. Moving disk; 15. Fixed column; 16. Anti-touch box; 17. Fixed shell; 18. Sliding shell; 19. Spring 3; 20. Magnetic disk; 21. Movable ball. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] Reference Figures 1 to 3The present invention provides an embodiment of a wiring junction box for relay protection in a thermal power plant, comprising a box body 1 and a box cover 2. A fixing ring 3 is fixedly connected to the bottom of the box cover 2. The box cover 2 supports and fixes the fixing ring 3. The inner wall of the fixing ring 3 is fixedly connected to a plurality of springs 4 (such as the attached Figure 3 ), the fixed ring 3 has the function of supporting and fixing the position of the multiple springs 1-4. The other end of the multiple springs 1-4 is fixedly connected to the sliding ring 5. The position change of the sliding ring 5 drives the multiple springs 1-4 to compress and accumulate elastic potential energy for reset (such as the attached Figure 3 (The figure shows the state before compression). The outer portion of the sliding ring 5 is slidably connected to the inner wall of the fixed ring 3, which serves to secure the sliding position of the sliding ring 5. The top of the box body 1 is fixedly connected to a support ring 6, which supports and secures the support ring 6. The outer portion of the support ring 6 is slidably connected to the inner wall of the fixed ring 3, which serves to secure the sliding position of the support ring 6. The inner wall of the box body 1 is fixedly connected to a support assembly that supports the locking structure, which serves to support and secure the support assembly.

[0034] Reference Figure 5 The support assembly includes two rotating rings 7. The outer portion of the rotating ring 7 is fixedly connected to the inner wall of the box body 1. The box body 1 supports and fixes one rotating ring 7. The outer portion of the other rotating ring 7 is fixedly connected to the inner wall of the box cover 2. The box cover 2 supports and fixes the other rotating ring 7. The other end of the support assembly is fixedly connected to the inner wall of the box cover 2. The box cover 2 fixes the other end of the support assembly. The internal rotation of the support assembly is connected to two rotating blocks 8 (as shown in the attached figure). Figure 5 ), the support assembly has the function of fixing the rotation position of the two rotating blocks 8. The exteriors of the two rotating blocks 8 are fixedly connected to connecting rods 9, and the position change of the two rotating blocks 8 drives the two connecting rods 9 to change their positions.

[0035] The other ends of the two connecting rods 9 are rotatably connected to the rotating column 10. The position change of the two connecting rods 9 drives the position change of the rotating column 10. The inner wall of the rotating column 10 is fixedly connected to the spring 2 12. The position change of the rotating column 10 can cause the spring 2 12 to deform. The outer side of the two rotating columns 10 is slidably connected to the movable column 11 (as shown in the attached figure). Figure 5 ), the movable column 11 serves to secure the sliding position of the two rotating columns 10. The other end of the second spring 12 is fixedly connected to the inner wall of the movable column 11, and the movable column 11 serves to secure the other end of the spring 12. The other end of the movable column 11 is pivotally connected to the inner wall of the box body 1, and the box body 1 serves to secure the position of one of the movable columns 11. The other end of the other movable column 11 is pivotally connected to the inner wall of the box cover 2, and the box cover 2 serves to secure the rotational position of the other movable column 11.

[0036] Reference Figure 3 、 Figure 4 and Figure 6 The interior of the box body 1 is detachably connected to a movable disk 14 (such as the attached Figure 4 The movable plate 14 has a larger area in contact with air than the outlet connection port of the box body 1, so that the movable plate 14 can block the outlet connection port when it is fixed. The box body 1 is internally detachably connected with a plurality of branch ports 13 (such as the attached Figure 3 The housing 1 secures multiple branch ports 13, which are used to connect different wires before branching. A fixed post 15 is fixedly attached to the exterior of the movable tray 14, supporting and securing the post 15. A removable anti-touch box 16 is removably attached to the exterior of the post 15, securing the post 15 in place and preventing the movable tray 14 from blocking the outlet ports.

[0037] The interior of the anti-touch box 16 is fixedly connected to the fixed shell 17, supporting and securing the fixed shell 17. The inner wall of the fixed shell 17 is slidably connected to the sliding shell 18, securing the sliding space for the sliding shell 18. The inner wall of the sliding shell 18 is movably connected to two movable balls 21, supporting and securing the two movable balls 21. The outer surfaces of the two movable balls 21 are coupled to the exterior of the fixed column 15. When the two movable balls 21 are pressed against the fixed column 15, they can secure the fixed column 15 in place. Otherwise, the fixed column 15 is unsecured.

[0038] A spring 3 19 is fixedly connected to the inner wall of the anti-touch box 16, supporting and securing the spring 3 19. A magnetic disk 20 is fixedly connected to the interior of the sliding housing 18, securing the magnetic disk 20. The other end of the spring 3 19 is fixedly connected to the exterior of the magnetic disk 20. The magnetic disk 20 is attracted by a strong magnetic field, causing the spring 3 19 to deform. When the external force is removed, the deformation of the spring 3 19 resets the magnetic disk 20. The exterior of the fixed column 15 is slidably connected to the exterior of the magnetic disk 20, allowing the magnetic disk 20 to secure the other end of the fixed column 15 in a fixed sliding position.

[0039] Working principle: Place the box cover 2 on the top of the box body 1, and the sliding ring 5 contacts the support ring 6 on the top of the box body 1. The support ring 6 can make the sliding ring 5 move in the opposite direction. The reverse movement of the sliding ring 5 can compress multiple springs 4. The deformation of multiple springs 4 produces elastic potential energy for reset. The reverse force of the spring 4 can push the sliding ring 5 to continue to press down, so that the sliding ring 5 is in close contact with the surface of the support ring 6, so that the device has good sealing performance. Rotate the box cover 2 to make the surfaces of the two rotating rings 7 contact, which drives the surfaces of the two rotating blocks 8 to contact. The two rotating blocks 8 will drive the positions of the two connecting rods 9 to change during the movement. The two connecting rods 9 are in close contact with each other. The position change of rod 9 drives the two rotating columns 10 to pull spring 2 12 to deform. After the external force is removed, spring 2 12 resets and drives the rotating column 10 to restore its position, thereby driving one end of the two connecting rods 9 to change position. The position change of the two connecting rods 9 drives the two horizontal rotating blocks 8 to rotate into a vertical state, thereby locking the rotating blocks 8 and the rotating ring 7, that is, locking the box cover 2 and the box body 1, which can effectively prevent the intrusion of moisture, dust and other external contaminants, reduce the risk of wiring short circuit and failure, and reduce maintenance frequency. The sealing design helps to improve electrical insulation performance, reduce electrical interference, and ensure the accuracy and reliability of the relay protection device.

[0040] Before use, a strong magnetic block is used to attract the magnetic disk 20 to move its position. The magnetic disk 20 drives the sliding shell 18 to move toward the anti-touch box 16, so that the gap between the anti-touch box 16 and the fixed shell 17 becomes larger, so that the two movable balls 21 can have a larger activity space, thereby eliminating the clamping of the middle fixed column 15 due to extrusion, so that the fixed column 15 can pass through the bottom of the anti-touch box 16 and disengage from the anti-touch box 16, so that the fixed column 15 can drive the movable disk 14 to disengage from the outlet before wiring operation can be carried out. It can effectively avoid damage to the completed branched line due to accidental touch before use, which causes the outlet of the connecting line to be opened, reduces unnecessary downtime and maintenance costs, and protects the internal wiring from external interference, ensures stable operation of the equipment, and extends the service life of the wiring junction box and its components.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A junction box for relay protection in a thermal power plant, comprising a box body (1) and a box cover (2), characterized in that: The bottom of the box cover (2) is fixedly connected to a fixing ring (3), the inner wall of the fixing ring (3) is fixedly connected to a plurality of springs (4), the other ends of the plurality of springs (4) are fixedly connected to a sliding ring (5), the outer portion of the sliding ring (5) is slidably connected to the inner wall of the fixing ring (3), the top of the box body (1) is fixedly connected to a supporting ring (6), the outer portion of the supporting ring (6) is slidably connected to the inner wall of the fixing ring (3), the inner wall of the box body (1) is fixedly connected to a supporting assembly for supporting the locking structure, the other end of the supporting assembly is fixedly connected to the inner wall of the box cover (2), the inner portion of the supporting assembly is rotatably connected to two rotating blocks (8), the outer portions of the two rotating blocks (8) are fixedly connected to connecting rods (9), the other ends of the two connecting rods (9) are rotatably connected to rotating columns (10), and the outer portions of the two rotating columns (10) are slidably connected to movable columns (11).

2. The junction box for relay protection in thermal power plants according to claim 1, characterized in that: The support assembly comprises two rotating rings (7), the exterior of one rotating ring (7) being fixedly connected to the inner wall of the box body (1), and the exterior of the other rotating ring (7) being fixedly connected to the inner wall of the box cover (2).

3. The junction box for relay protection in thermal power plants according to claim 1, characterized in that: A second spring (12) is fixedly connected to the inner wall of the rotating column (10), and the other end of the second spring (12) is fixedly connected to the inner wall of the movable column (11).

4. The junction box for relay protection in thermal power plants according to claim 1, characterized in that: The other end of the movable column (11) is rotatably connected to the inner wall of the box body (1), and the other end of the other movable column (11) is rotatably connected to the inner wall of the box cover (2).

5. The junction box for relay protection in thermal power plants according to claim 1, characterized in that: The interior of the box body (1) is detachably connected to a movable disk (14), the interior of the box body (1) is detachably connected to a plurality of branching ports (13), and the exterior of the movable disk (14) is fixedly connected to a fixed column (15).

6. The junction box for relay protection in thermal power plants according to claim 5, characterized in that: The exterior of the fixed column (15) is detachably connected to an anti-touch box (16), the interior of the anti-touch box (16) is fixedly connected to a fixed shell (17), and the inner wall of the fixed shell (17) is slidably connected to a sliding shell (18).

7. The junction box for relay protection in thermal power plants according to claim 6, characterized in that: Two movable balls (21) are movably connected to the inner wall of the sliding shell (18), and the outer parts of the two movable balls (21) are coupled to the outside of the fixed column (15).

8. The junction box for relay protection in thermal power plants according to claim 7, characterized in that: The inner wall of the anti-touch box (16) is fixedly connected to a spring three (19), the interior of the sliding shell (18) is fixedly connected to a magnetic disk (20), the other end of the spring three (19) is fixedly connected to the outside of the magnetic disk (20), and the outside of the fixed column (15) is slidably connected to the outside of the magnetic disk (20).

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