High-protection PLC control cabinet

Abstract

The utility model relates to a highly protective PLC control cabinet, which comprises a cabinet body, a protective suite and a plurality of groups of explosion-proof buffers, the inner wall of the cabinet body is provided with a mounting rack, the plurality of groups of explosion-proof buffers are detachably placed in the inner cavity of the protective suite, and each explosion-proof buffer comprises an air bag, an air nozzle and at least one group of deflation seats. And the gas nozzle is arranged on the outer wall of the gas bag, so that flame-retardant gas can be injected into the gas bag after the gas nozzle is connected with an external gas source. Through the arrangement of the explosion-proof buffer, when impact such as explosion occurs outside the PLC control cabinet, the influence on internal electrical elements of equipment can be reduced by utilizing the obstruction of the explosion-proof buffer, meanwhile, the deformation damage of the cabinet body caused by external force impact can be reduced, and when the internal part of the PLC control cabinet accidentally generates combustion, the explosion-proof buffer is prevented from being damaged. And the flame-retardant gas in the gas bag can be discharged into the cabinet body by utilizing the heated melting or deformation shrinkage of the hot melting film, so that a fire source which is accidentally generated in the cabinet body can be quickly extinguished.

Description

Technical Field

[0001] The utility model relates to the technical field of PLC control cabinets, in particular to a high-protection PLC control cabinet. Background Art

[0002] PLC control cabinet refers to a complete set of control cabinets, which are electrical cabinets that can realize the control of electromechanical switches. The components of the PLC control cabinet generally include: PLC modules, power modules, relays, air switches and other electrical components, and the above modules are usually connected by wire harnesses with wiring terminals.

[0003] For example, in the utility model patent with Chinese patent publication number CN219660116U, a highly protective PLC control cabinet is proposed. By setting up a PLC control cabinet body, supporting ribs and heat insulation panels, when the PLC control cabinet is in use, the cabinet body has a sandwich layer structure, so that the overall explosion-proof performance of the cabinet body is greatly improved, thereby ensuring the protectiveness of the PLC control cabinet when in use.

[0004] However, the above-mentioned highly protected PLC control cabinet, on the one hand, is more likely to be deformed and damaged due to the impact of external explosions, and on the other hand, when fire occurs accidentally inside the control cabinet, there is a lack of rapid flame retardant protection measures. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The utility model provides a highly protective PLC control cabinet, which solves the problems that the PLC control cabinet is easily deformed by external impact and lacks flame retardant protection measures inside.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a highly protective PLC control cabinet, comprising a cabinet body with a mounting frame installed on the inner wall, a protective kit and several groups of explosion-proof buffers, wherein the several groups of explosion-proof buffers are detachably placed in the inner cavity of the protective kit, and the explosion-proof buffers include an air bag, an air nozzle and at least one group of deflation seats, wherein the air nozzle is installed on the outer wall of the air bag so that the air nozzle can inject a flame-retardant gas into the air bag after being connected to an external gas source, and the flame-retardant gas injected into the air bag is set to carbon dioxide. Or nitrogen, at least one group of the venting seats is installed on the side of the air bag facing the outer wall of the cabinet, and the venting seat extends into its inner cavity towards one end of the cabinet, the venting seat includes a guide sleeve, an annular positioning platform and a hot melt film, one end of the guide sleeve is fixed on the air bag, the other end of the guide sleeve extends into the cabinet, and the inner cavity of the guide sleeve is communicated with the inner cavity of the air bag, the annular positioning platform is formed on the inner wall of the guide sleeve, the hot melt film is adhesively fixed to the side of the annular positioning platform facing the outer wall of the cabinet, and the hot melt film is set to be a TPU hot melt film.

[0009] Preferably, the vent seat further comprises a pressure ring, the pressure ring is inserted into the guide sleeve and fixedly connected thereto, and the hot melt film is located between the pressure ring and the annular positioning platform.

[0010] It is further preferred that the protection kit includes an epitaxial steel frame, multiple support plates and multiple cover plates, the epitaxial steel frame is welded and fixed to the outer wall of the cabinet, and the epitaxial steel frame forms a "U" shape along the outer wall of the cabinet, the multiple support plates are welded and fixed to the inner side of the epitaxial steel frame, and the multiple support plates divide the inner cavity of the epitaxial steel frame into multiple cavities for placing explosion-proof buffers, and the multiple cover plates cover the cavities for placing explosion-proof buffers.

[0011] In a further preferred embodiment, a cabinet door is hingedly connected to the front of the cabinet, a socket matching with the air release seat is formed on the inner wall of the cabinet, a base is fixedly connected to the lower end of the cabinet, and a plurality of guide grooves are formed on the bottom of the base.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a highly protective PLC control cabinet, which has the following beneficial effects:

[0014] 1. In the present invention, by setting up the explosion-proof buffer, when there is an impact such as an explosion outside the PLC control cabinet, the explosion-proof buffer can be used to block and reduce the impact on the internal electrical components of the equipment, and at the same time, the deformation and damage of the cabinet caused by the external force impact can be reduced.

[0015] 2. In the utility model, the vent seat and the air bag in the explosion-proof buffer are arranged in coordination, so that when combustion occurs accidentally inside the PLC control cabinet, the hot melt film can be melted or deformed and shrunk by heat so that the flame-retardant gas in the air bag can be discharged into the cabinet body, thereby quickly extinguishing the fire source accidentally generated in the cabinet body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the external structure of a high-protection PLC control cabinet according to the implementation plan;

[0017] Figure 2 A schematic diagram of the internal structure of a high-protection PLC control cabinet according to the implementation scheme;

[0018] Figure 3 is a schematic structural diagram of a protection kit according to an implementation scheme;

[0019] Figure 4 is a structural schematic diagram of a cabinet according to the implementation scheme;

[0020] Figure 5 is a schematic structural diagram of an explosion-proof buffer according to an implementation scheme;

[0021] Figure 6 It is a schematic diagram of the structure of the guide sleeve in the vent seat after half-section.

[0022] In the figure: 10, cabinet; 11, socket; 12, bottom bracket; 13, guide groove; 20, mounting frame; 30, protection kit; 31, extension steel frame; 32, support plate; 33, cover plate; 40, explosion-proof buffer; 41, air bag; 42, air nozzle; 43, air release seat; 431, guide sleeve; 432, annular positioning table; 433, hot melt film; 434, pressure ring. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1 and Figure 2A highly protective PLC control cabinet includes a cabinet 10, a protective kit 30, and several groups of explosion-proof buffers 40. The mounting frame 20 fixed on the inner wall of the cabinet 10 is used to support and install electrical components such as PLC modules, DC power supplies, relays, and air switches. The protective kit 30 is installed and fixed on the outside of the cabinet 10, and several groups of explosion-proof buffers 40 are detachably placed in the inner cavity of the protective kit 30, so that they are used for explosion-proofing of the cabinet 10, reducing impact, and flame retardant in the cabinet.

[0025] See also Figure 1 and 4 The cabinet 10 can be made of a sheet metal structure into a rectangular structure with a cabinet door hinged on the front, and the steel plate constituting the inner wall of the cabinet 10 is pre-cut before bending to form a socket 11 that matches the air release seat 43. After the cabinet 10 is manufactured, a bottom bracket 12 can be welded and fixed at its lower end, and a plurality of guide grooves 13 are formed at the bottom of the bottom bracket 12 to prevent water from entering the cabinet when water accumulates under the cabinet 10, and the guide grooves 13 can make the accumulated water flow and reduce accumulation.

[0026] See also Figure 3 The protective kit 30 includes an outer steel frame 31, a plurality of support plates 32, and a plurality of cover plates 33. The outer steel frame 31 is welded and fixed to the outer wall of the cabinet 10, and the outer steel frame 31 forms a "U" shape along the outer wall of the cabinet 10. The plurality of support plates 32 are welded and fixed to the inner side of the outer steel frame 31, and the plurality of support plates 32 separate the inner cavity of the outer steel frame 31 into a plurality of cavities for placing the explosion-proof buffers 40. The plurality of cover plates 33 cover the cavities for placing the explosion-proof buffers 40, and the cover plates 33 can be replaced separately according to their damage after being impacted by external force.

[0027] See also Figure 5 and Figure 6 The explosion-proof buffer 40 includes an air bag 41, an air nozzle 42 and at least one set of air release seats 43. The air nozzle 42 is installed on the outer wall of the air bag 41, and the air bag 41 can be made of a long bag made of rubber material, so that the air bag 41 can be inserted into the protective kit 30 before inflation. After the air nozzle 42 is connected to an external gas source, a flame-retardant gas can be injected into the air bag 41, and the flame-retardant gas used can be a commonly used flame-retardant gas such as carbon dioxide or nitrogen. After inflation, the air bag 41 can be arranged as an interlayer in the inner cavity of the protective kit 30 to reduce the explosion impact on the cabinet 10. At least one set of air release seats 43 is installed on the side of the air bag 41 facing the outer wall of the cabinet 10, and the end of the air release seat 43 facing the cabinet 10 extends into the inner cavity of the cabinet 10 through the socket 11. The flame-retardant gas in the air bag 41 can be discharged to the inner cavity of the cabinet 10 by the air release seat 43 to extinguish the fire source accidentally generated in the cabinet 10.

[0028] In this embodiment, the degassing seat 43 may include a guide sleeve 431, an annular positioning platform 432, a hot melt film 433 and a pressure ring 434. One end of the guide sleeve 431 is fixed on the air bag 41, and the other end of the guide sleeve 431 extends into the cabinet 10, and the inner cavity of the guide sleeve 431 is communicated with the inner cavity of the air bag 41, so that the flame-retardant gas can be discharged by the guide sleeve 431. The annular positioning platform 432 is formed on the inner wall of the guide sleeve 431, and the hot melt film 433 is bonded and fixed on the side of the annular positioning platform 432 facing the outer wall of the cabinet 10. The hot melt film 433 can be made of TPU (thermoplastic polyurethane elastomer rubber) material to form a thin film, and its melting temperature is 95°C to 110°C. When heated to near the melting temperature, the hot melt film 433 will deform and shrink, so that the hot melt film 433 no longer blocks the guide sleeve 431, and then the flame-retardant gas can be discharged from the guide sleeve 431. The pressure ring 434 is inserted into the guide sleeve 431 and fixedly connected thereto, and the hot melt film 433 is located between the pressure ring 434 and the annular positioning platform 432. The pressure ring 434 is used to assist in fixing the hot melt film 433 so as to prevent the hot melt film 433 from falling off due to the pressurization in the air bag 41 during the process of injecting flame-retardant gas into the air bag 41.

[0029] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described one by one here. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A high-protection PLC control cabinet, comprising a cabinet body (10) with a mounting frame (20) mounted on the inner wall, characterized in that: It also includes a protection kit (30) and a plurality of groups of explosion-proof buffers (40), wherein the plurality of groups of explosion-proof buffers (40) are detachably placed in the inner cavity of the protection kit (30). The explosion-proof buffer (40) comprises an air bag (41), an air nozzle (42) and at least one set of air release seats (43); the air nozzle (42) is installed on the outer wall of the air bag (41) so that the air nozzle (42) can inject flame-retardant gas into the air bag (41) after being connected to an external gas source; at least one set of air release seats (43) is installed on a side of the air bag (41) facing the outer wall of the cabinet (10), and one end of the air release seat (43) facing the cabinet (10) extends into the inner cavity thereof; The degassing seat (43) comprises a guide sleeve (431), an annular positioning platform (432) and a hot melt film (433); one end of the guide sleeve (431) is fixed on the air bag (41); the other end of the guide sleeve (431) extends into the cabinet (10); and the inner cavity of the guide sleeve (431) is communicated with the inner cavity of the air bag (41); the annular positioning platform (432) is formed on the inner wall of the guide sleeve (431); and the hot melt film (433) is adhesively fixed to the side of the annular positioning platform (432) facing the outer wall of the cabinet (10).

2. A high-protection PLC control cabinet according to claim 1, characterized in that: The degassing seat (43) further comprises a pressure ring (434), wherein the pressure ring (434) is inserted into the guide sleeve (431) and is fixedly connected thereto, and the hot melt film (433) is located between the pressure ring (434) and the annular positioning platform (432).

3. A high-protection PLC control cabinet according to claim 1 or 2, characterized in that: The hot melt film (433) is configured as a TPU hot melt film.

4. A high-protection PLC control cabinet according to claim 1 or 2, characterized in that: The flame-retardant gas injected into the air bag (41) is configured as carbon dioxide or nitrogen.

5. A high-protection PLC control cabinet according to claim 1, characterized in that: The protection kit (30) comprises an extension steel frame (31), a plurality of support plates (32) and a plurality of cover plates (33); the extension steel frame (31) is welded and fixed on the outer wall of the cabinet (10), and the extension steel frame (31) forms a "U" shape along the outer wall of the cabinet (10); the plurality of support plates (32) are welded and fixed on the inner side of the extension steel frame (31), and the plurality of support plates (32) divide the inner cavity of the extension steel frame (31) into a plurality of cavities for placing explosion-proof buffers (40); and the plurality of cover plates (33) cover the cavities for placing explosion-proof buffers (40).

6. A high-protection PLC control cabinet according to claim 1, characterized in that: The cabinet body (10) has a cabinet door hinged on the front, the inner wall of the cabinet body (10) is formed with a socket (11) matched with the air release seat (43), the lower end of the cabinet body (10) is fixedly connected with a base (12), and the bottom of the base (12) is formed with a plurality of guide grooves (13).

Images