Integrated explosion-proof control terminal
By introducing secondary and primary isolation devices into the explosion-proof industrial control computer, and utilizing heat-deformable materials and detachable connection structures, the safety and disassembly challenges of the explosion-proof control terminal in high-temperature environments have been solved, achieving efficient safety protection and convenient operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-03-06
- Publication Date
- 2026-04-03
AI Technical Summary
Existing explosion-proof control terminals are susceptible to damage in high-temperature environments and are difficult to remove, resulting in insufficient safety performance.
It adopts an explosion-proof industrial control computer and a secondary isolation device, including a heat-sensitive isolation structure and a detachable connection device. It utilizes heat-deformable materials to form heat insulation at high temperatures. The detachable connection device enables the connection and disconnection of the support plate and the explosion-proof industrial control computer. Combined with the primary isolation device, the junction box can be quickly removed through the cooperation of slide rails and slide grooves.
Provides additional safety protection in high-temperature environments, facilitates quick and easy disassembly of explosion-proof industrial control computers, improves safety performance and ease of operation, and is suitable for industrial production.
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Figure CN116456633B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to control terminals, and more particularly to an integrated explosion-proof control terminal. Background Technology
[0002] Control terminals are key equipment in industrial production, typically industrial control computers. To adapt to high-risk production environments, technicians in this field have developed explosion-proof control terminals, which are applied in mines, chemical plants, power plants, and other settings to ensure safe production.
[0003] Currently, explosion-proof control terminals mainly include isolated control terminals, where the control terminal body uses an explosion-proof housing. The explosion-proof housing is usually a cast or molded metal shell. Based on cost and safety performance considerations, aluminum alloy or stainless steel shells are usually chosen, with aluminum alloy shells being more common. Openings are machined in the aluminum alloy shell to install connectors, and cables are connected through the connectors. Since the cables are directly connected to the control terminal, explosion-proof cables are used to improve safety performance, usually armored cables, thus achieving a certain degree of isolation. However, during use, temperature has a significant impact on the control terminal, and the control terminal is not easy to remove. Summary of the Invention
[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an integrated explosion-proof control terminal that can provide secondary protection for the control terminal and has high safety performance.
[0005] This invention is achieved through the following technical solution: an integrated explosion-proof control terminal, including an explosion-proof industrial control computer, the explosion-proof industrial control computer being connected to a secondary isolation device, the secondary isolation device including a support plate, a heat-sensitive isolation structure being provided between the support plate and the explosion-proof industrial control computer, the heat-sensitive isolation structure including a carrier plate, the carrier plate being provided with a heat-deformable material, an explosion-proof cable being connected to the support plate, the explosion-proof cable being provided with a connector that mates with the explosion-proof industrial control computer, a cable fixing structure for fixing the explosion-proof cable being provided on the support plate, a detachable connection device being provided between the support plate and the explosion-proof industrial control computer, the detachable connection device including a connecting seat provided on the support plate, an expansion arm pointing towards the explosion-proof industrial control computer being provided on the connecting seat, and a connection arm being provided on the explosion-proof industrial control computer. The expansion arm has a corresponding slot. A disengagement drive device is provided between the support plate and the explosion-proof industrial control computer. The disengagement drive device includes a push plate mounted on the support plate. A push rod that cooperates with the push plate is provided between the explosion-proof industrial control computer and the support plate. The explosion-proof industrial control computer is also connected to a primary isolation device. The primary isolation device includes an explosion-proof cover. An explosion-proof junction box is provided inside the explosion-proof cover. An explosion-proof connector is connected to the explosion-proof cable. The explosion-proof connector is located inside the explosion-proof junction box. A slide rail is provided inside the explosion-proof cover. A slide groove that cooperates with the slide rail is provided in the explosion-proof junction box. A pull rod is hinged to the explosion-proof junction box. A sliding sleeve is connected to the end of the pull rod. A sliding column that cooperates with the sliding sleeve is provided inside the explosion-proof cover. As the sliding sleeve slides along the sliding column, it can drive the explosion-proof junction box to slide along the slide rail.
[0006] Furthermore, the expansion arm includes an elastic sleeve, a support flap is provided inside the elastic sleeve, a push rod is provided inside the support flap, the push rod passes through a connecting seat, a guide hole that mates with the push rod is provided on the connecting seat, a top plate is provided at the end of the guide hole, a push ring that mates with the top plate is provided on the push rod, and an operating hole that mates with the push rod is provided on the explosion-proof industrial control computer.
[0007] Furthermore, the support plate is provided with a carrier plate receiving groove, the carrier plate is disposed in the carrier plate receiving groove, and the cable fixing structure includes a wire hole disposed on the support plate, the wire hole being disposed near the push plate, and an installation groove is provided on the support plate around the wire hole, and a fixing member for fixing the cable is disposed in the installation groove.
[0008] Furthermore, the heat-deformable material is composed of heat-shrinkable adhesive and steel fibers, with a weight ratio of heat-shrinkable adhesive to steel fibers of 0.2-0.3:1. The carrier plate is a stainless steel wire woven mesh plate, and the shrinkage temperature of the heat-shrinkable adhesive is higher than 120°C.
[0009] Furthermore, the heat shrink adhesive is selected from PE heat shrink adhesive, PVDF heat shrink adhesive, and PTFE heat shrink adhesive.
[0010] The beneficial effects of this invention are as follows: The integrated explosion-proof control terminal includes an explosion-proof industrial control computer connected to a secondary isolation device. The heat-sensitive isolation structure includes a carrier plate with a heat-deformable material that conducts heat under normal conditions and deforms at high temperatures to form insulation. A detachable connection device is provided, enabling the connection and disconnection of the support plate from the explosion-proof industrial control computer for convenient operation. A disconnection drive device is provided to disconnect the explosion-proof industrial control computer from the support plate. The support plate is connected to an explosion-proof cable, which detaches with the support plate, allowing for rapid removal of the explosion-proof industrial control computer. A primary isolation device is provided, with an explosion-proof junction box installed inside the explosion-proof cover via a slide rail and groove. A pull rod can actuate the junction box, pulling it out of the cabinet, allowing operation of connector one to disconnect the explosion-proof cable from the cabinet. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of Example 1;
[0012] Figure 2 This is a schematic diagram of the support plate structure;
[0013] Figure 3 This is a schematic diagram of the expansion arm structure;
[0014] Figure 4 This is a schematic diagram of the longitudinal section of the expansion arm;
[0015] Figure 5 This is a schematic diagram of the front view of the explosion-proof cover;
[0016] Figure 6 This is a schematic diagram of the explosion-proof junction box structure;
[0017] Figure 7 This is a schematic diagram of the cross-section of the carrier plate;
[0018] The components include: 1. Explosion-proof industrial control computer; 2. Support plate; 3. Slot; 4. Carrier plate; 5. Push plate; 6. Carrier plate receiving slot; 7. Connecting seat; 8. Explosion-proof cable; 9. Connector 1; 10. Explosion-proof connector; 11. Explosion-proof cover; 12. Explosion-proof junction box; 13. Push rod; 14. Wire hole; 15. Elastic sleeve; 16. Support clip; 17. Guide sleeve; 18. Top rod; 19. Top plate; 20. Push ring; 21. Button; 22. Wire clip; 23. Positioning pin; 24. Mounting hole; 25. Slide rail; 26. Pressure ring; 27. Elastic pad; 28. Sliding column; 29. Sliding ring; 30. Pull rod; 31. Support column; 32. Heat shrinkable adhesive layer; 33. Limiting gasket. Detailed Implementation
[0019] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0021] Example 1
[0022] like Figure 1-7As shown, an integrated explosion-proof control terminal includes an explosion-proof industrial computer 1. The explosion-proof industrial computer 1 is an industrial computer with an explosion-proof shell, which has good explosion-proof function. The explosion-proof industrial computer 1 is connected to a secondary isolation device, which includes a support plate 2. The support plate 2 is made of galvanized plate with a thickness of 2mm, which has high structural strength. A heat-sensitive isolation structure is installed between the support plate 2 and the explosion-proof industrial computer 1. Specifically, the heat-sensitive isolation structure includes a carrier plate 4. The carrier plate 4 has a heat-deformable material. The carrier plate 4 is a stainless steel wire woven mesh, specifically made of 2-3 layers of stainless steel wire woven mesh with a wire diameter of 0.5mm, which gives the carrier plate 4 good deformation ability. The heat-deformable material is composed of heat-shrinkable adhesive and steel fiber. The weight ratio of heat-shrinkable adhesive to steel fiber is 0.2-0.3:1, and the steel fiber length is 3-5mm. Due to the low density of heat-shrinkable adhesive, the weight ratio is 0.2-0.3:1.At a ratio of 3:1, the volume of heat-shrinkable adhesive and steel fiber is close. Heat is conducted through the steel fiber, and then dissipated through the cabinet's heat dissipation structure. The shrinkage temperature of the heat-shrinkable adhesive is higher than 120℃. One of the following heat-shrinkable adhesives is selected: PE, PVDF, or PTFE. PE and PVDF heat-shrinkable adhesives have shrinkage temperatures of 125℃-175℃, while PTFE heat-shrinkable adhesive has a shrinkage temperature exceeding 200℃. When the temperature inside the cabinet rises abnormally, the heat-shrinkable adhesive shrinks, and the corresponding steel fiber separates from the carrier board 4 and the explosion-proof industrial control computer 1, forming a cavity for heat conduction. The heat-shrinkable adhesive layer 32, with a thickness of 3mm, is formed on the surface of the carrier plate 4 due to the reduced heat deformation rate. To ensure the uniformity of the heat-shrinkable adhesive layer 32, multiple support columns 31 are evenly installed on the carrier plate 4. The support columns 31 are made of wood and have been carbonized and blackened on the surface. The carrier plate 4 with the support columns 31 is placed into the mold, and the heat deformation material is injected to control the thickness. When the heat-shrinkable adhesive layer 32 shrinks, the support columns 31 support the carrier plate 4 between the carrier plate 4 and the explosion-proof industrial control computer 1, thereby preventing the carrier plate 4 from moving and avoiding contact between the shrunken heat-shrinkable adhesive layer 32 and the carrier plate 4 or the explosion-proof industrial control computer 1. The support plate 2 has a carrier plate groove 6, and the carrier plate 4 is placed in the carrier plate groove 6. In this embodiment, the side of the support plate 2 facing the explosion-proof industrial control computer 1 is bent or welded with a long strip to form the carrier plate groove 6. This is convenient to manufacture and increases the deformation resistance of the support plate 2. In the experiment, modified asphalt was also tested as a heat-deformation material. Specifically, LB-10 modified asphalt from Shandong Hanzhou Engineering Materials Co., Ltd. was selected. It has a softening point of 81℃, is solid at low temperatures, has a low thermal conductivity, and is mixed with thermally conductive steel fibers, which increases the thermal conductivity. When the temperature rises rapidly, the asphalt softens. While softening asphalt absorbs heat and thus achieves a heat-insulating effect, it also produces flammable high-molecular gases and ash. Even with the addition of large amounts of adsorbents, such as activated carbon, to modified asphalt, these gases and ash cannot be eliminated, failing to effectively solve the high-temperature insulation problem. Existing technologies lack other suitable materials that provide both low-temperature thermal conductivity and high-temperature heat resistance. Other cooling structures, such as dry ice fire extinguishers, have been considered; however, their large size makes them unsuitable for industrial applications. The secondary isolation device provided in this embodiment has an overall thickness of 8-12mm, numerous cavities, and a lightweight design, making it suitable for industrial applications.
[0023] The support plate 2 has a cable fixing structure for fixing the explosion-proof cable 8. The cable fixing structure includes wire holes 14 machined on the support plate 2. The wire holes 14 are close to the edge of the support plate 2. The support plate 2 has a mounting groove around the wire holes 14. The mounting groove contains a fixing component for fixing the cable. Specifically, the mounting groove is also surrounded by a long strip plate. The fixing component can be epoxy resin potting compound, which is injected into the mounting groove. Alternatively, the shielding layer of the explosion-proof cable 8 can be fixed by bolts, etc., or by mounting glands. In this embodiment, epoxy resin potting compound is used. Specifically, Osbon 150 epoxy resin potting compound is selected, which has high fixing stability and is easy to operate. The support plate 2 is connected to the explosion-proof cable 8. The explosion-proof cable 8 is an armored explosion-proof cable with a shielding layer. The explosion-proof cable 8 is connected to a connector 9 that mates with the explosion-proof industrial control computer 1. The connector 9 is directly plugged into the socket of the explosion-proof industrial control computer 1 without using locking components. The entire cable is fixed by the support plate 2 to ensure connection stability.
[0024] A detachable connection device is provided between the support plate 2 and the explosion-proof industrial control computer 1. The detachable connection device includes a connecting seat 7 fixed on the support plate 2. An expansion arm pointing towards the explosion-proof industrial control computer 1 is installed on the connecting seat 7. The explosion-proof industrial control computer 1 has a slot 3 machined to cooperate with the expansion arm. Specifically, the expansion arm includes an elastic sleeve 15, which is a rubber sleeve. The end of the elastic sleeve 15 is inserted into the connecting seat 7 and fixed by a positioning pin 23. The rubber sleeve and the slot 3 are connected by an interference fit. A support clip 16 is installed inside the elastic sleeve 15. A push rod 18 is installed inside the support clip 16. The push rod 18 is cylindrical and made of stainless steel. The push rod 18 passes through the connecting seat 7 and is connected to a button 21. A guide hole that cooperates with the push rod 18 is machined on the connecting seat 7. A top plate 19 is threaded to the end of the guide hole. The push rod 18 is fixed with a push ring 20 that cooperates with the top plate 19. The support clip 16 has a conical channel. Pressing the button 21 can push the push rod 18 to move, thereby driving the support clip 16 to open. The connecting seat 7 is on the side of the support plate 2, and the slot 3 is located on the side of the explosion-proof industrial control computer 1. The outer end of the connecting seat 7 is flush with the end face of the slot 3. During installation, the explosion-proof industrial control computer 1 with the secondary isolation device is placed into the installation port. Pressing the button 21 pushes the push rod 18 to move, thereby driving the support clip 16 to open. The elastic sleeve 15 expands and then engages with the installation port. The explosion-proof industrial control computer 1 is then installed. It can be reinforced with bolts later. When removing the explosion-proof industrial control computer 1, simply pull the button 21 to push the push rod 18 out. The cooperation between the top plate 19 and the push ring 20 can prevent the push rod 18 from detaching from the connecting seat 7.
[0025] The expansion arm and the slot 3 work together to connect the support plate 2 to the explosion-proof industrial computer 1, ensuring a connection under normal conditions. When it is necessary to disengage the support plate 2 from the explosion-proof industrial computer 1 from the outside, the explosion-proof industrial computer 1 has an operating hole that mates with the push rod 18. A plug is installed in the operating hole, and a guide sleeve 17 is installed at the end of the elastic sleeve 15. The inner cavity of the guide sleeve 17 is flared. A punch is inserted through the operating hole, and then passes through the guide sleeve 17 to act on the push rod 18, pushing the push rod 18 inward. The cooperation of connector 9 and push ring 20 can push the support plate 2 inward. Connector 9 is fixed to the support plate 2 and is driven to detach from the explosion-proof industrial control computer 1, allowing the explosion-proof industrial control computer 1 to be removed from the outside. To achieve more stable detachment, a detachment drive device is installed between the support plate 2 and the explosion-proof industrial control computer 1. The detachment drive device includes a push plate 5 fixed on the support plate 2, and a push rod 13 that cooperates with the push plate 5 is installed between the explosion-proof industrial control computer 1 and the support plate 2. Specifically, the wire hole 14 is arranged close to the push plate 5. During use, it can... An electric push rod 13 is installed on the support plate 2. The base of the electric push rod 13 is the push plate 5, and the drive arm of the electric push rod 13 is the push rod 13. When it is necessary to detach the support plate 2 from the explosion-proof industrial control computer 1, the electric push rod 13 is driven to move, thereby causing the push rod 13 to press against the explosion-proof industrial control computer 1, and then pushing the support plate 2 to detach from the explosion-proof industrial control computer 1 in the opposite direction. The wire hole 14 is close to the push plate 5, which can better bear the force and make the detachment speed faster. After the support plate 2 is detached from the explosion-proof industrial control computer 1, the explosion-proof industrial control computer 1 can be removed from the outside. The secondary isolation device is an emergency device to protect the explosion-proof industrial control computer 1. It is not used under normal circumstances. For cost considerations, an operating hole that matches the push plate 5 can be machined on the explosion-proof industrial control computer 1. A through hole that matches the operating hole can be machined at the mounting opening. The push rod 13 is fixed on the push plate 5. The push rod 13 matches the operating hole. The punch is inserted through the operating hole, passes through the through hole, and then acts on the push rod 13, pushing the push rod 13 inward, pushing the push plate 5, and then pushing the support plate 2 to detach from the explosion-proof industrial control computer 1. This method is low in cost and highly stable.
[0026] The explosion-proof industrial control computer 1 is also connected to a primary isolation device, which includes an explosion-proof cover 11. An explosion-proof junction box 12 is installed inside the explosion-proof cover 11. An explosion-proof cable 8 is connected to an explosion-proof connector 10, which is connected inside the explosion-proof junction box 12. The explosion-proof cover 11 works in conjunction with the explosion-proof industrial control computer 1. During transportation, the secondary isolation device and the explosion-proof cable 8 are stored within the cavity formed by the explosion-proof cover 11 and the explosion-proof industrial control computer 1 for convenient transport. The secondary isolation device is defined as the removal of the explosion-proof industrial control computer 1 under high-risk conditions, and the primary isolation device is defined as the removal of the explosion-proof industrial control computer 1 under low-risk conditions. Generally, a fixed rail is installed inside the control cabinet, fixed to the inner wall of the control cabinet. Components such as power supplies, switches, and junction boxes are installed on the fixed rail. On the track, operation is difficult under dangerous conditions. In this embodiment, a slide rail 25 is fixed inside the explosion-proof cover 11, and the bottom of the explosion-proof junction box 12 has a groove that mates with the slide rail 25. The explosion-proof junction box 12 is hinged with a pull rod 30, and a sliding sleeve is connected to the end of the pull rod 30. A sliding column 28 that mates with the sliding sleeve is fixed inside the explosion-proof cover 11. Both the sliding column 28 and the sliding sleeve are made of stainless steel and are fitted with a clearance. Lubricating oil is injected into the clearance. As the sliding sleeve slides along the sliding column 28, it can drive the explosion-proof junction box 12 to slide along the slide rail 25. The slide rail 25 and the pull rod 30 are located on different sides of the explosion-proof junction box 12. The length of the slide rail 25 that mates with the groove is 1 / 3 of the width of the explosion-proof junction box 12. By pulling the pull rod 30 with a hook or other tool, the sliding sleeve is disengaged from the sliding column 28. 8. Simultaneously, the explosion-proof junction box 12 slides towards the slide column 28, thereby disengaging the explosion-proof junction box 12 from the slide rail 25 and pulling it out of the control cabinet. The explosion-proof connector 10 can then be disengaged from outside the control cabinet, ensuring high safety. This structure can also be applied to other components requiring removal from the control cabinet. A wire clip 22 is installed inside the explosion-proof cover 11. The wire clip 22 is a plastic wire clip 22, which can pre-store and arrange explosion-proof cables 8 within the explosion-proof cover 11, thus providing the length of the explosion-proof cable when the explosion-proof junction box 12 is pulled out. In this embodiment, to ensure stable installation of the explosion-proof junction box 12, a pressure ring 26 is installed on the slide rail 25. The pressure ring 26 is positioned with the slide rail 25 by a set screw. An elastic pad 27 is placed between the pressure ring 26 and the explosion-proof junction box 12. Limiting shims 33 are installed on the upper part. After installation, the pull rod 30 is angled downwards towards the slide column 28, and the included angle between the pull rod 30 and the slide column 28 is 85-87°. The slide sleeve is positioned by the limiting shims 33. Then, the pressure ring 26 is operated to compress the elastic pad 27. The pull rod 30 forms a self-locking mechanism between the slide sleeve and the slide column 28, and the explosion-proof junction box 12 is fixed. During the process of pulling the slip ring 29, the pull rod 30 first pushes the explosion-proof junction box 12. After the slip ring 29 passes the balance point, it pulls the explosion-proof junction box 12 away from the slide rail 25. The explosion-proof junction box 12 can be taken out from outside the control cabinet by the operating rod with a hook. The safety performance is high. The installation hole 24 is machined on the explosion-proof cover 11, so that it can be fixed inside the control cabinet.
[0027] In summary, the integrated explosion-proof control terminal provided in this embodiment includes a primary isolation device and a secondary isolation device. The primary isolation device is defined as the removal of the explosion-proof industrial control computer 1 under low-risk conditions, that is, pulling out the explosion-proof junction box 12 and operating the explosion-proof connector 10 to disconnect it, and operating the button 21 on the control cabinet door to remove the explosion-proof industrial control computer 1. The secondary isolation device is defined as the removal of the explosion-proof industrial control computer 1 under high-risk conditions. The heat-sensitive isolation structure first protects the explosion-proof industrial control computer 1, and the explosion-proof industrial control computer 1 can be taken out from the outside without opening the control cabinet door by separating the support plate 2 from the body of the explosion-proof industrial control computer 1. The overall cost is low, the structure is small, and it is suitable for industrial-scale production.
[0028] Finally, it should be noted that the above description 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 foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. An integrated explosion-proof control terminal, comprising an explosion-proof industrial computer, characterized in that, The explosion-proof industrial control computer is connected to a secondary isolation device. The secondary isolation device includes a support plate. A heat-sensitive isolation structure is provided between the support plate and the explosion-proof industrial control computer. The heat-sensitive isolation structure includes a carrier plate with a heat-deformable material. An explosion-proof cable is connected to the support plate. The explosion-proof cable has a connector that mates with the explosion-proof industrial control computer. The support plate has a cable fixing structure for securing the explosion-proof cable. A detachable connection device is provided between the support plate and the explosion-proof industrial control computer. The detachable connection device includes a connecting seat on the support plate with an expansion arm pointing towards the explosion-proof industrial control computer. The explosion-proof industrial control computer has a slot that mates with the expansion arm. The support plate and the explosion-proof... A disengagement drive device is provided between the industrial control computer and the explosion-proof industrial control computer. The disengagement drive device includes a push plate mounted on a support plate. A push rod that cooperates with the push plate is provided between the explosion-proof industrial control computer and the support plate. The explosion-proof industrial control computer is also connected to a primary isolation device. The primary isolation device includes an explosion-proof cover, an explosion-proof junction box is provided inside the explosion-proof cover, an explosion-proof cable is connected to an explosion-proof connector, the explosion-proof connector is located inside the explosion-proof junction box, a slide rail is provided inside the explosion-proof cover, the explosion-proof junction box has a sliding groove that cooperates with the slide rail, a pull rod is hinged to the explosion-proof junction box, a sliding sleeve is connected to the end of the pull rod, and a sliding column that cooperates with the sliding sleeve is provided inside the explosion-proof cover. As the sliding sleeve slides along the sliding column, it can drive the explosion-proof junction box to slide along the slide rail. The expansion arm includes an elastic sleeve, within which a support latch is provided. A push rod is located within the support latch. The push rod passes through a connecting seat, which has a guide hole that mates with the push rod. A top plate is located at the end of the guide hole. A push ring that mates with the top plate is located on the push rod. The explosion-proof industrial control computer has an operating hole that mates with the push rod. The heat-deformable material is composed of heat-shrinkable adhesive and steel fiber, with a weight ratio of heat-shrinkable adhesive to steel fiber of 0.2-0.3:
1. The carrier plate is a stainless steel wire woven mesh plate, and the shrinkage temperature of the heat-shrinkable adhesive is higher than 120°C.
2. The integrated explosion-proof control terminal according to claim 1, characterized in that, The support plate is provided with a carrier plate receiving groove, and the carrier plate is disposed in the carrier plate receiving groove. The cable fixing structure includes a wire hole disposed on the support plate, the wire hole being disposed near the push plate. The support plate is provided with an installation groove surrounding the wire hole, and a fixing component for fixing the cable is disposed in the installation groove.
3. The integrated explosion-proof control terminal according to claim 1, characterized in that, The heat shrink adhesive is selected from one of PE heat shrink adhesive, PVDF heat shrink adhesive, and PTFE heat shrink adhesive.
Citation Information
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