A fastening device for a DCS cabinet

Abstract

The application relates to the technical field of a distributed control system, and provides a fastening device for a DCS cabinet, which is arranged between a base of the cabinet and a mounting seat, and comprises a connecting device and an insulating gasket. The connecting device comprises a connecting body and a clamping body arranged at one end of the connecting body, and the connecting body penetrates through a through hole on a bottom plate to be connected to the mounting seat. The insulating gasket comprises a first insulating body and a second insulating body, the first insulating body is arranged between the clamping body and the bottom plate, and the second insulating body is sleeved on the connecting body and located between the connecting body and the inner wall of the through hole. The fastening device is tightly matched with the mounting seat through the clamping body, can effectively prevent loosening, the double-insulation design of the first insulating body and the second insulating body of the insulating gasket can guarantee the long-term stability of the electrical insulation performance, the shortcomings of a traditional scheme are overcome, and the safety and reliability of cabinet installation are improved.

Description

Technical Field

[0001] This application relates to the technical field of distributed control systems, and more particularly to a fastening device for a DCS cabinet. Background Technology

[0002] In the field of industrial automation control, a distributed control system (DCS) is an automated system used to monitor and control industrial production processes. It typically consists of a group of control units and computers distributed throughout the factory, used to monitor and control various parameters and equipment in the production process in real time.

[0003] Among them, the DCS cabinet, as the core equipment, needs to be fixedly installed by a metal base. However, in some scenarios, such as lightning protection, electromagnetic interference resistance, or safety isolation, complete insulation between the cabinet and the metal base is required. Utility Model Content

[0004] This application provides a fastening device for a DCS cabinet, used to achieve electrical insulation of the cabinet during installation.

[0005] This application provides a fastening device for a DCS cabinet, the fastening device being disposed between the base plate of the cabinet (100) and the mounting base, comprising:

[0006] A connecting device, comprising a connecting body and a snap-fit ​​body disposed at one end of the connecting body, wherein the connecting body passes through a through hole in the base plate to connect to the mounting base;

[0007] An insulating gasket, comprising a first insulator and a second insulator, wherein the first insulator is disposed between the snap-fit ​​body and the base plate, and the second insulator is sleeved on the connector and located between the connector and the inner wall of the through hole.

[0008] In one implementation, the area of ​​the radial contact surface of the first insulator is larger than the area of ​​the snap-fit ​​surface of the snap-fit ​​body.

[0009] In one implementation, the axial length of the second insulator is greater than the thickness of the base plate.

[0010] In one implementation, the first insulator and the second insulator are integrally formed;

[0011] or,

[0012] The end of the second insulator abuts against the end of the first insulator;

[0013] Or perhaps,

[0014] The first insulator is sleeved onto the outer peripheral surface of the second insulator in an encapsulating structure.

[0015] In one implementation, the connecting device is made of a high-strength insulating material.

[0016] In one implementation, the fastening device further includes: a fixed body and an elastic body;

[0017] The fixing body connects to one end of the connector to fix the connector to the mounting base; the elastic body is sleeved on the connector and located between the fixing body and the mounting base.

[0018] In one implementation, the fastening device further includes an insulating element disposed between the base plate and the mounting base.

[0019] In one implementation, the fastening device further includes a gradient sealing ring;

[0020] The gradient sealing ring includes a first-stage stepped sealing component and a second-stage stepped sealing component sequentially fitted onto the connecting body, with the outer ring of the first-stage stepped sealing component fitting against the insulating component and the outer ring of the second-stage stepped sealing component fitting against the inner wall of the connecting hole on the mounting base.

[0021] In one implementation, the gradient sealing ring further includes a third-level stepped sealing member fitted on the connector, and the third-level stepped sealing member is located at the bottom of the mounting base.

[0022] In one implementation, the insulating gasket is made of nylon.

[0023] The fastening device provided in this embodiment is disposed between the base of the cabinet and the mounting base. The fastening device includes a connecting device and an insulating gasket. The connecting device includes a connecting body and a snap-fit ​​body disposed at one end of the connecting body. The connecting body passes through a through hole in the base plate and connects to the mounting base. The insulating gasket includes a first insulator and a second insulator. The first insulator is disposed between the snap-fit ​​body and the base plate, and the second insulator is sleeved on the connecting body and located between the connecting body and the inner wall of the through hole. The fastening device effectively prevents loosening through the tight fit between the snap-fit ​​body and the mounting base. Simultaneously, the double insulation design of the first and second insulators of the insulating gasket ensures long-term stability of electrical insulation performance, overcoming the shortcomings of traditional solutions and improving the safety and reliability of cabinet installation. Attached Figure Description

[0024] To more clearly illustrate the technical solution of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a schematic diagram of an implementation structure in the prior art;

[0026] Figure 2Schematic diagram of the implementation structure of the fastening device provided in the embodiments of this application Figure 1 ;

[0027] Figure 3 Schematic diagram of the implementation structure of the fastening device provided in the embodiments of this application Figure 2 ;

[0028] Figure 4 Schematic diagram of the implementation structure of the insulating gasket provided in the embodiments of this application Figure 1 ;

[0029] Figure 5 Schematic diagram of the implementation structure of the insulating gasket provided in the embodiments of this application Figure 2 ;

[0030] Figure 6 Schematic diagram of the implementation structure of the insulating gasket provided in the embodiments of this application Figure 3 ;

[0031] Figure 7 Schematic diagram of the implementation structure of the fastening device provided in the embodiments of this application Figure 3 ;

[0032] Figure 8 Schematic diagram of the implementation structure of the fastening device provided in the embodiments of this application Figure 4 ;

[0033] Figure 9 Schematic diagram of the implementation structure of the fastening device provided in the embodiments of this application Figure 5 .

[0034] Among them, 1-connecting device, 11-connecting body, 12-clamping body, 2-insulating gasket, 21-first insulator, 22-second insulator, 3-fixing body, 4-elastic body, 5-insulating component, 6-gradient sealing ring, 61-first-stage stepped sealing component, 62-second-stage stepped sealing component, 63-third-stage stepped sealing component, 100-cabinet, 101-base plate, 102-through hole, 200-mounting base connecting device, 300-metal bolt. Detailed Implementation

[0035] In the installation of cabinets for Distributed Control Systems (DCS), fixing with metal bases is the basic installation method. When electrical insulation between the cabinet and the metal base is required, a bolted fastening structure combined with an insulating dielectric isolation scheme is typically used. This involves placing an insulating dielectric material between the cabinet and the base interface and completing the mechanical connection with bolts. This connection system can be divided into two categories: metal bolt assemblies and plastic insulated bolt assemblies. Metal bolt assemblies involve adding an insulating flat washer to the contact interface between the nut and the cabinet. However, this type of metal bolt has a risk of direct contact between the bolt shank and the cabinet hole wall, resulting in insufficient insulation performance to meet electrical insulation requirements. Therefore, if... Figure 1 As shown, an air gap can be created between the metal bolt 300 and the enclosure by enlarging the diameter of the through hole 102 at the bottom of the cabinet, thus forming effective insulation. However, this solution has significant drawbacks: firstly, the installation process requires strict precision control of the air gap dimensions; secondly, during operation, mechanical vibration may cause the connectors to loosen, or foreign objects may enter the air gap area, leading to insulation failure and failing to guarantee long-term reliable insulation performance. While plastic insulating bolt assemblies made of polymer-based composite materials can achieve body insulation, the tensile strength of plastic insulating bolt assemblies (typically below 300 MPa) is insufficient to meet the mechanical performance requirements of fixed installations.

[0036] To address the aforementioned technical problems, embodiments of this application provide a fastening device for DCS cabinets, such as... Figure 2 As shown, the fastening device is installed between the base plate 101 of the cabinet 100 and the mounting base 200. The fastening device includes a connecting device 1 and an insulating gasket 2. The connecting device 1 includes a connecting body 11 and a snap-fit ​​body 12 disposed at one end of the connecting body 11. The connecting body 11 passes through the through hole 102 on the base plate 101 and connects to the mounting base 200. The snap-fit ​​body 12 snaps into the bottom of the mounting base 200 to ensure a stable connection.

[0037] The insulating gasket 2 includes a first insulator 21 and a second insulator 22. The first insulator 21 is disposed between the snap-fit ​​body 12 and the base plate 101, meaning the snap-fit ​​body 12 snaps onto the first insulator 21 attached to the base plate 101, ensuring a stable connection between the snap-fit ​​body 12 and the base plate 101. The second insulator 22 is sleeved on the connector 11 and located between the connector 11 and the inner wall of the through hole 102. The fastening device effectively prevents the connector 11 and the snap-fit ​​body 12 from loosening through the tight fit between the snap-fit ​​body 12 and the mounting base 200. Simultaneously, the double insulation design of the first insulator 21 and the second insulator 22 of the insulating gasket 2 ensures long-term stability of electrical insulation performance, overcomes the shortcomings of traditional solutions, and enhances the electrical insulation performance and mechanical stability of the cabinet 100.

[0038] Furthermore, such as Figure 3 As shown, the radial contact area of ​​the first insulator 21 is larger than the contact area of ​​the snap-fit ​​surface of the snap-fit ​​body 12. This not only increases the contact area between the first insulator 21 and the base plate 101, ensuring no contact between the base plate 101 of the cabinet 100 and the snap-fit ​​body 12, thus enhancing insulation, but also disperses the pressure of the snap-fit ​​body 12 on the base plate 101, preventing localized overload. The second insulator 22 tightly fits onto the connector 11, effectively isolating the connector 11 from contact with the inner wall of the through hole 102, eliminating the risk of insulation failure. The overall structure is simple, easy to install, and suitable for various DCS cabinet scenarios, significantly improving the system's security and stability.

[0039] In addition, such as Figure 3 The axial length of the second insulator 22 is greater than the thickness of the base plate 101. This ensures that there is no contact between the insulator and the connector 11 on the through hole 102 of the cabinet, thereby extending the radial insulation path of the connector 11, further enhancing the anti-interference capability of the insulating gasket 2, and ensuring that the insulating gasket 2 can maintain stable insulation performance in complex environments.

[0040] In some embodiments of this application, such as Figure 4 The first insulator 21 and the second insulator 22 are integrally molded, which not only simplifies the manufacturing process but also ensures the consistency and reliability of the insulation layer, further improving the overall performance of the fastening device. The insulating gasket 2 maintains excellent insulation performance and mechanical strength even after long-term use. Simultaneously, the integral molding design reduces assembly steps, lowers production costs, and improves production efficiency. The various components of the fastening device work together to form a highly efficient and stable insulation system, ensuring excellent performance under various environments and providing a solid guarantee for the safe operation of the cabinet.

[0041] Alternatively, the fastening device can be customized according to actual needs to adapt to different cabinet sizes and installation environments. For example, as shown in Figure 5, the end of the second insulator 22 abuts against the end of the first insulator 21. In this way, the second insulator 22 and the first insulator 21 are designed separately. When the cabinet 100 is subjected to mechanical vibration that causes the connector 11 to undergo axial displacement or torsion, the integrated insulating gasket 2 can be prevented from breaking or being damaged between the first insulator 21 and the second insulator 22. In particular, it can prevent insulation failure caused by irregular breakage.

[0042] The modular design enhances the adaptability and durability of the fastening system, ensuring stable insulation performance under various extreme conditions, further improving the safety and reliability of the cabinet. For example, it ensures good insulation performance under vibration or shock conditions, improving the cabinet's adaptability to different operating conditions, extending equipment lifespan, and reducing maintenance costs. Furthermore, the modular design facilitates individual replacement of damaged insulators, simplifying maintenance procedures, reducing downtime, and improving system operating efficiency. This flexibility and reliability of the fastening system makes it an ideal choice for various types of cabinets, ensuring the stability and safety of equipment during long-term operation.

[0043] Or, as Figure 6 As shown, the first insulator 21 is sleeved onto the outer peripheral surface of the second insulator 22 in a covering structure. Thus, when the cabinet experiences significant shaking, and the connector 11 undergoes axial translation or twisting, the second insulator 22 can move the first insulator 21. This not only prevents the integrated insulating gasket 2 from breaking or breaking between the first insulator 21 and the second insulator 22, but also avoids large gaps at the contact point between the separated first insulator 21 and the second insulator 22, which could lead to electrical insulation failure.

[0044] In some embodiments, the connector 11 can be made of metal to ensure sufficient strength, or it can be made of high-strength insulating material, such as polyimide or special engineering plastics, which ensures both mechanical strength and improved insulation performance, making it suitable for high-temperature and high-pressure environments and further enhancing the overall performance of the fastening device. Compared to metal connectors 11, high-strength insulating materials not only improve the heat resistance and corrosion resistance of the fastening device, but also significantly reduce performance degradation caused by environmental factors, ensuring the stable operation of the cabinet under complex working conditions.

[0045] In some embodiments, such as Figure 7 As shown, the fastening device also includes a fixing body 3 and an elastic body 4. The fixing body 3 is connected to one end of the connecting body 11 to fix the connecting body 11 to the mounting base 200. The elastic body 4 is sleeved on the connecting body 11 and located between the fixing body 3 and the mounting base 200. In this way, the elastic body 4, through its elastic deformation characteristics, provides a buffering and restoring effect when the connecting body 11 is axially displaced or twisted, effectively reducing the damage of mechanical stress to the insulator and further enhancing the stability and durability of the fastening device. At the same time, the selection of the elastic body 4 can be adjusted according to specific working conditions to adapt to the usage requirements in different environments, ensuring that the cabinet can maintain excellent insulation performance and mechanical strength under various conditions.

[0046] In some embodiments, such as Figure 8As shown, the fastening device also includes an insulating component 5 disposed between the base plate 101 and the mounting base 200. This forms an additional insulating layer between the base plate 101 and the mounting base 200, effectively isolating current leakage and further enhancing the safety and reliability of the system. This ensures stable operation of the equipment even in complex electromagnetic environments. The insulating component 5 is made of a material with high pressure resistance; for example, an insulating rubber pad can be used as the insulating component 5 to withstand the pressure applied by the cabinet 101.

[0047] In some embodiments, such as Figure 9 As shown, the fastening device also includes a gradient sealing ring. The gradient sealing ring 6 comprises a first-stage stepped sealing member 61 and a second-stage stepped sealing member 62 sequentially fitted onto the connector 11. The outer ring of the first-stage stepped sealing member 61 is fitted to the insulating member 5, and the outer ring of the second-stage stepped sealing member 62 is fitted to the inner wall of the connecting hole on the mounting base 200. The gradient sealing ring design not only improves the sealing effect but also effectively prevents gas or liquid leakage through step-by-step pressure reduction, further enhancing the overall sealing performance of the cabinet. In particular, it prevents liquid leakage, thus ensuring electrical isolation. Furthermore, the first-stage stepped sealing member 61 is made of a highly elastic material, while the second-stage stepped sealing member 62 is made of a high-temperature resistant material, ensuring excellent sealing performance under different temperature and pressure conditions and improving the environmental adaptability of the fastening device.

[0048] In addition, such as Figure 9 As shown, the gradient sealing ring 6 may further include a third-level stepped sealing member 63 sleeved on the connecting body 11, and the third-level stepped sealing member 63 is connected to the second-level stepped sealing member 62 and located at the bottom of the mounting base 200. In this way, the third-level stepped sealing member 63 further enhances the sealing layer, effectively prevents bottom leakage, ensures that the cabinet can maintain a high degree of sealing performance even in extreme environments, and improves the safety and reliability of the overall system.

[0049] It should be noted that in this embodiment, the insulating pad 2 is made of nylon, which has excellent insulation properties and mechanical strength, is resistant to high temperature and aging, and ensures long-term stable operation.

[0050] The fastening device provided in this embodiment is disposed between the base of the cabinet and the mounting base. The fastening device includes a connecting device 1 and an insulating gasket 2. The connecting device 1 includes a connecting body 11 and a snap-fit ​​body 12 disposed at one end of the connecting body 11. The connecting body 11 passes through a through hole 102 on the base plate 101 and connects to the mounting base 200. The insulating gasket 2 includes a first insulator 21 and a second insulator 22. The first insulator 21 is disposed between the snap-fit ​​body 12 and the base plate 101, and the second insulator 22 is sleeved on the connecting body 11 and located between the connecting body 11 and the inner wall of the through hole 102. The fastening device effectively prevents loosening through the tight fit between the snap-fit ​​body 12 and the mounting base 200. At the same time, the double insulation design of the first insulator 21 and the second insulator 22 of the insulating gasket 2 can ensure the long-term stability of electrical insulation performance, overcome the shortcomings of traditional solutions, and improve the safety and reliability of cabinet installation.

[0051] The above specific embodiments further illustrate the purpose, technical solution and beneficial effects of this application. It should be understood that the above are only specific embodiments of this application and are not intended to limit the scope of protection of this application. Any modifications, equivalent substitutions, improvements, etc., made on the basis of the technical solution of this application should be included within the scope of protection of this application.

Claims

1. A fastening device for a DCS cabinet, characterized in that, The fastening device is disposed between the base plate (101) of the cabinet (100) and the mounting base (200), and includes: A connecting device (1) includes a connecting body (11) and a snap-fit ​​body (12) disposed at one end of the connecting body (11). The connecting body (11) passes through a through hole (102) on the base plate (101) and connects to the mounting base (200). An insulating pad (2) includes a first insulator (21) and a second insulator (22). The first insulator (21) is disposed between the snap-fit ​​body (12) and the base plate (101). The second insulator (22) is sleeved on the connector (11) and located between the connector (11) and the inner wall of the through hole (102).

2. The fastening device for a DCS cabinet according to claim 1, characterized in that, The radial contact surface area of ​​the first insulator (21) is larger than the contact surface area of ​​the snap-fit ​​body (12).

3. A fastening device for a DCS cabinet according to claim 1, characterized in that, The axial length of the second insulator (22) is greater than the thickness of the base plate (101).

4. A fastening device for a DCS cabinet according to claim 1, characterized in that, The first insulator (21) and the second insulator (22) are integrally formed; or, The end of the second insulator (22) abuts against the end of the first insulator (21); Or perhaps, The first insulator (21) is sleeved on the outer peripheral surface of the second insulator (22) in an encapsulating structure.

5. A fastening device for a DCS cabinet according to claim 1, characterized in that, The connecting device (1) is made of high-strength insulating material.

6. A fastening device for a DCS cabinet according to claim 1, characterized in that, Also includes: Fixing body (3) and elastic body (4); The fixing body (3) is connected to one end of the connecting body (11) to fix the connecting body (11) on the mounting base (200); the elastic body (4) is sleeved on the connecting body (11) and located between the fixing body (3) and the mounting base (200).

7. The fastening device for a DCS cabinet according to claim 1, characterized in that, Also includes: An insulating element (5) is disposed between the base plate (101) and the mounting base (200).

8. A fastening device for a DCS cabinet according to claim 7, characterized in that, It also includes a gradient sealing ring (6); The gradient sealing ring (6) includes a first-stage stepped sealing member (61) and a second-stage stepped sealing member (62) sequentially sleeved on the connecting body (11), with the outer ring of the first-stage stepped sealing member (61) fitting against the insulating member (5) and the outer ring of the second-stage stepped sealing member (62) fitting against the inner wall of the connecting hole on the mounting base (200).

9. A fastening device for a DCS cabinet according to claim 8, characterized in that, The gradient sealing ring (6) further includes a third-level stepped sealing member (63) sleeved on the connecting body (11), and the third-level stepped sealing member (63) is located at the bottom of the mounting base (200).

10. A fastening device for a DCS cabinet according to claim 1, characterized in that, The insulating pad (2) is made of nylon.

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