A high-voltage relay sealing device based on a PLC control system

Abstract

This utility model relates to the field of high-voltage relay sealing technology, and discloses a high-voltage relay sealing device based on a PLC control system, including: a device housing and a wiring port; an annular connecting seat with positioning grooves on both sides and a limiting annular groove at the center of the inner wall of the annular connecting seat, with a compression spring installed at the bottom of the inner cavity of the positioning groove and a positioning block connected to the top of the compression spring; and an annular connecting plate with limiting blocks installed on both the front and back, and a connecting hole at the center of the top of the annular connecting plate. This high-voltage relay sealing device based on a PLC control system, by connecting the high-voltage relay cable, moves the annular connecting plate along the cable surface, pressing the annular connecting plate into the annular connecting seat. The limiting block enters along the positioning groove and compresses the positioning block, which compresses the compression spring. Rotating the annular connecting plate causes the limiting block to rotate into the limiting annular groove. When the limiting block separates from the positioning block, the positioning block resets under the action of the compression spring.

Description

Technical Field

[0001] This utility model relates to the field of high voltage relay sealing technology, specifically a high voltage relay sealing device based on a PLC control system. Background Technology

[0002] A PLC (Programmable Logic Controller) is a digital electronic system designed specifically for industrial environments. It executes logical operations, sequential control, timing, counting, and arithmetic operations through programmable memory to control machinery or production processes. Its core advantages lie in high reliability, flexibility, and ease of maintenance. High-voltage relays are key components in PLC control systems used to isolate and switch high-voltage circuits, typically used to control motor starting, heating systems, and high-voltage power supply switching. Their core function is to control the on / off state of high-voltage circuits through low-voltage signals output by the PLC, ensuring safe and stable system operation. For high-voltage relays in PLC control systems, sealing devices are required to prevent dust and other contaminants from entering the relay during prolonged use.

[0003] Traditional high-voltage relay sealing devices based on PLC control systems typically place the high-voltage relay inside a sealed enclosure. Since the relay requires wiring, wiring ports must be created on the enclosure. Because these ports are of fixed size, while the cables come in various sizes, gaps can exist between the ports and the cables, allowing dust and other contaminants to enter the sealed enclosure and affect the relay. To address this issue, some PLC-based high-voltage relay sealing devices use cable trays. After the cable is connected to the relay, the cable tray moves along the cable to the wiring port and connects with it, preventing gaps and dust ingress. However, this method suffers from drawbacks. Since cables come in various sizes, and the holes in the cable trays are fixed and cannot be adjusted, requiring different tray sizes for different cables, the entire tray needs to be replaced for each cable size. This increases operating costs and is inconvenient for operation. Therefore, a high-voltage relay sealing device based on a PLC control system is proposed. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a high-voltage relay sealing device based on a PLC control system, thereby solving the aforementioned technical problems that not only increase usage costs but also make operation inconvenient.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a high-voltage relay sealing device based on a PLC control system, comprising:

[0008] The device housing includes a door located on the front of the housing, a cable routing port located at the center of the upper surface of the housing, and a connector installed on the inner wall of the back of the housing.

[0009] The annular connecting seat is threaded to the top of the cable port. The annular connecting seat has positioning grooves on both the left and right sides of its inner wall, and a limit ring groove is formed in the center of the inner wall of the annular connecting seat. The positioning groove and the limit ring groove are connected. A compression spring is installed at the bottom of the inner cavity of the positioning groove, and a positioning block is connected to the top of the compression spring.

[0010] The ring-shaped connecting plate is located within the inner cavity of the ring-shaped connecting seat. Limit blocks are installed on both the front and back of the ring-shaped connecting plate, and a connecting hole is provided at the center of its top. After the high-voltage relay is installed on the connecting seat, the ring-shaped connecting plate is first fitted onto the cable surface through the connecting hole. Then, the ring-shaped connecting seat is connected to the wiring port. The cable is then connected to the high-voltage relay via the ring-shaped connecting seat and the wiring port, allowing the high-voltage relay to connect to the PLC control system via the cable. The enclosure door and device housing are then closed. The ring-shaped connecting plate moves along the cable surface towards the ring-shaped connecting seat. When the ring-shaped connecting plate connects with the ring-shaped connecting seat, the limit blocks are aligned with the positioning grooves, and the ring-shaped connecting plate is pressed into the ring-shaped connecting seat. The limit blocks then move along the positioning grooves. The positioning block is then pressed, causing it to compress the compression spring. Once the limiting block aligns with the limiting ring groove, the annular connecting plate is rotated on the annular connecting seat, causing the limiting block to enter the inner cavity of the limiting ring groove. When the limiting block separates from the positioning block, the positioning block resets under the action of the compression spring. On the one hand, the annular connecting plate can be replaced according to the cable size without replacing the entire annular connecting seat, which not only reduces the cost of use but also facilitates operation. On the other hand, it ensures the connection stability between the annular connecting seat and the annular connecting plate, facilitating disassembly and assembly.

[0011] Preferably, the front perimeter of the device housing is provided with sealing grooves, and bolts are threaded around the inner perimeter of the sealing grooves. The device housing is connected to the corresponding structure through the sealing grooves.

[0012] Preferably, a transparent observation plate is installed at the center of the front of the door, and sealing protrusions are installed around the four sides of the back of the door. The internal condition of the device housing can be observed through the transparent observation plate, and the door is connected to the device housing through the sealing protrusions.

[0013] Preferably, both the sealing groove and the sealing protrusion are square in design, and their positions and shapes correspond. When the door and the device housing are fitted together, the sealing protrusion inserts into the interior of the sealing groove for connection, thereby preventing dust and other contaminants from entering through the gap between the door and the device housing, ensuring the device's airtightness.

[0014] Preferably, the outer surface of the sealing protrusion is provided with threaded holes on all four sides, and the threaded holes are threadedly connected to the bolts. When the sealing protrusion is inserted into the sealing groove for connection, the bolts on the device housing can be rotated to connect with the threaded holes.

[0015] Preferably, the connector is square in shape, and the front side of the connector has evenly spaced connection holes. The connector is connected to the high-voltage relay through the connection holes.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a high-voltage relay sealing device based on a PLC control system, which has the following advantages:

[0018] This high-voltage relay sealing device based on a PLC control system works by first installing the high-voltage relay on the connector, then fitting the annular connecting plate onto the cable surface through the connecting hole, and then connecting the annular connector to the cable routing port. The cable is then connected to the high-voltage relay via the annular connector and the cable routing port, allowing the high-voltage relay to connect to the PLC control system via the cable. The enclosure door and device housing are then closed, and the annular connecting plate moves along the cable surface towards the annular connector. When the annular connecting plate connects to the annular connector, the limit block is aligned with the positioning groove, and the annular connecting plate is pressed into the annular connector. Inside the connecting seat, the limiting block enters along the positioning groove and squeezes the positioning block, causing the positioning block to squeeze the compression spring. When the limiting block aligns with the position of the limiting ring groove, the ring connecting plate is rotated on the annular connecting seat, causing the limiting block to rotate into the inner cavity of the limiting ring groove. When the limiting block separates from the positioning block, the positioning block resets under the action of the compression spring. The ring connecting plate can be replaced according to the cable size without replacing the entire annular connecting seat, which not only reduces the cost of use but also facilitates operation. At the same time, it ensures the connection stability between the annular connecting seat and the ring connecting plate and facilitates disassembly and assembly. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the separation structure of the device body and the door of this utility model;

[0021] Figure 3 This is a schematic diagram of the left rear side view of the door structure of this utility model;

[0022] Figure 4 This is a cross-sectional structural diagram of the housing portion of the device of this utility model;

[0023] Figure 5 This is a schematic cross-sectional view of the annular connecting seat and the annular connecting plate of this utility model.

[0024] Figure 6 This is a schematic diagram of the ring-connecting plate structure of this utility model.

[0025] In the diagram: 1. Device housing; 2. Door; 3. Transparent observation plate; 4. Sealing protrusion; 5. Threaded hole; 6. Sealing groove; 7. Bolt; 8. Wiring port; 9. Connecting seat; 10. Annular connecting seat; 11. Positioning groove; 12. Limiting ring groove; 13. Compression spring; 14. Positioning block; 15. Ring connecting plate; 16. Limiting block; 17. Connecting hole. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] This utility model provides a technical solution: a high-voltage relay sealing device based on a PLC control system, comprising: (See details) Figure 1 , Figure 4 , Figure 5 , Figure 6 The device housing 1, and the door 2 located on the front of the device housing 1, and the wiring port 8 is provided at the center of the upper surface of the device housing 1, and the connecting seat 9 is installed on the inner wall of the back of the device housing 1.

[0028] The annular connecting seat 10 is threaded to the top of the wiring port 8. The annular connecting seat 10 has positioning grooves 11 on both the left and right sides of its inner wall, and a limiting ring groove 12 is formed in the center of its inner wall. The positioning groove 11 communicates with the limiting ring groove 12. A compression spring 13 is installed at the bottom of the inner cavity of the positioning groove 11, and a positioning block 14 is connected to the top of the compression spring 13.

[0029] A ring-shaped connecting plate 15 is disposed within the inner cavity of the ring-shaped connecting seat 10, and limit blocks 16 are installed on both the front and back sides of the ring-shaped connecting plate 15. A connecting hole 17 is provided at the center of the top of the ring-shaped connecting plate 15. After the high-voltage relay is installed on the connecting seat 9, the ring-shaped connecting plate 15 is first fitted onto the surface of the cable through the connecting hole 17. Then, the ring-shaped connecting seat 10 is connected to the wiring port 8. The cable is connected to the high-voltage relay through the ring-shaped connecting seat 10 and the wiring port 8 in sequence, so that the high-voltage relay is connected to the PLC control system through the cable. Then, the box door 2 and the device box 1 are closed, and the ring-shaped connecting plate 15 moves along the surface of the cable toward the ring-shaped connecting seat 10. When the ring-shaped connecting plate 15 is connected to the ring-shaped connecting seat 10, the limit blocks 16 are aligned with the positioning grooves 11, and the ring-shaped connecting plate 15 is pressed into the interior of the ring-shaped connecting seat 10. The limit blocks 16 enter along the positioning grooves 11. The positioning block 14 is pressed, causing it to compress the compression spring 13. When the limiting block 16 aligns with the limiting ring groove 12, the annular connecting plate 15 is rotated on the annular connecting seat 10, causing the limiting block 16 to rotate into the inner cavity of the limiting ring groove 12. When the limiting block 16 separates from the positioning block 14, the positioning block 14 is reset under the action of the compression spring 13. On the one hand, the annular connecting plate 15 can be replaced according to the cable size without replacing the entire annular connecting seat 10, which not only reduces the cost of use but also facilitates operation. On the other hand, it ensures the connection stability between the annular connecting seat 10 and the annular connecting plate 15, facilitating disassembly and assembly.

[0030] Please see Figure 2 , Figure 3 The device housing 1 has sealing grooves 6 on all four sides of its front surface, and bolts 7 are threadedly connected to the inner circumference of each sealing groove 6. The device housing 1 is connected to the corresponding structure through the sealing grooves 6. A transparent observation plate 3 is installed at the center of the front of the door 2, and sealing protrusions 4 are installed on all four sides of the back of the door 2. The internal condition of the device housing 1 can be observed through the transparent observation plate 3. The door 2 is connected to the device housing 1 through the sealing protrusions 4. Both the sealing grooves 6 and the sealing protrusions 4 are square in design, and their positions and shapes correspond. When the door 2 is fitted to the device housing 1, the sealing protrusions 4 are inserted into the sealing grooves 6 for connection, thereby preventing dust and other contaminants from entering through the gap between the door 2 and the device housing 1, ensuring the airtightness of the device. Threaded holes 5 are opened on all four sides of the outer surface of the sealing protrusions 4, and the threaded holes 5 are threadedly connected to the bolts 7. When the sealing protrusions 4 are inserted into the sealing grooves 6 for connection, the bolts 7 can be rotated on the device housing 1 to connect with the threaded holes 5. The connector 9 has a square design, and evenly spaced connection holes are provided on its front side. The connector 9 is connected to the high-voltage relay through these connection holes.

[0031] This solution involves installing the high-voltage relay on the connector 9, first fitting the ring plate 15 onto the cable surface through the connecting hole 17, then connecting the ring connector 10 to the wiring port 8. The cable is then connected to the high-voltage relay via the ring connector 10 and the wiring port 8, allowing the high-voltage relay to connect to the PLC control system via the cable. Next, the door 2 and the device housing 1 are closed, and the ring plate 15 moves along the cable surface towards the ring connector 10. When the ring plate 15 connects to the ring connector 10, the limiting block 16 is aligned with the positioning groove 11, pressing the ring plate 15 into the ring connector 10. The positioning block 14 is pressed along the positioning groove 11, causing it to compress the compression spring 13. When the limiting block 16 aligns with the limiting ring groove 12, the ring connecting plate 15 is rotated on the annular connecting seat 10, causing the limiting block 16 to rotate into the inner cavity of the limiting ring groove 12. When the limiting block 16 separates from the positioning block 14, the positioning block 14 is reset under the action of the compression spring 13. The internal condition of the device housing 1 can be observed through the transparent observation plate 3. When the door 2 is attached to the device housing 1, the sealing protrusion 4 is inserted into the sealing groove 6 for connection. The bolt 7 is rotated on the device housing 1 and threadedly connected to the threaded hole 5.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-voltage relay sealing device based on a PLC control system, characterized in that, include: The device housing (1) and the door (2) located on the front of the device housing (1) are provided. A wiring port (8) is provided at the center of the upper surface of the device housing (1), and a connecting seat (9) is installed on the inner wall of the back of the device housing (1). The annular connecting seat (10) is threaded to the top of the wiring port (8), and the inner wall of the annular connecting seat (10) is provided with positioning grooves (11) on both the left and right sides, and a limiting ring groove (12) is provided at the center of the inner wall of the annular connecting seat (10). The positioning groove (11) is connected to the limiting ring groove (12), and a compression spring (13) is installed at the bottom of the inner cavity of the positioning groove (11), and a positioning block (14) is connected to the top of the compression spring (13). A ring connecting plate (15) is provided in the inner cavity of the ring connecting seat (10), and limit blocks (16) are installed on both the front and back sides of the ring connecting plate (15), and a connecting hole (17) is provided at the top center of the ring connecting plate (15).

2. The high-voltage relay sealing device based on a PLC control system according to claim 1, characterized in that: The front of the device housing (1) is provided with sealing grooves (6) on all four sides, and bolts (7) are threaded around the inner cavity of the sealing grooves (6).

3. The high-voltage relay sealing device based on a PLC control system according to claim 2, characterized in that: A transparent observation plate (3) is installed at the center of the front of the box door (2), and sealing protrusions (4) are installed around the back of the box door (2).

4. The high-voltage relay sealing device based on a PLC control system according to claim 3, characterized in that: Both the sealing groove (6) and the sealing protrusion (4) are square designs, and the positions and shapes of the sealing groove (6) and the sealing protrusion (4) correspond to each other.

5. A high-voltage relay sealing device based on a PLC control system according to claim 4, characterized in that: The sealing protrusion (4) has threaded holes (5) on all four sides of its outer surface, and the threaded holes (5) are threadedly connected to the bolt (7).

6. A high-voltage relay sealing device based on a PLC control system according to claim 1, characterized in that: The connector (9) is square in shape, and the front of the connector (9) is evenly provided with connecting holes.

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