Explosion-proof box with multi-layer protection structure

Abstract

The utility model discloses an explosion-proof box with a multi-layer protection structure, which belongs to the technical field of explosion-proof boxes and comprises an explosion-proof cabinet body, an explosion-proof cabinet door is rotatably connected to the outer end of the explosion-proof cabinet body, an outer window is rotatably connected to the outer end of the explosion-proof cabinet body, the explosion-proof cabinet body, the explosion-proof cabinet door and the outer window are all made of aluminum alloy, an installation assembly is arranged in the explosion-proof cabinet body, and the explosion-proof cabinet door and the outer window are both made of aluminum alloy. An explosion-proof partition plate is arranged in the explosion-proof cabinet body and divides the interior of the explosion-proof cabinet body into a threading cavity and an installation cavity, the explosion-proof partition plate is installed in the explosion-proof cabinet body and divides the interior of the explosion-proof cabinet body into the threading cavity and the installation cavity, and the installation assembly is arranged in the installation cavity so that an electrical device can be installed. The display screen is installed on the explosion-proof cabinet door and is isolated from the interior of the explosion-proof cabinet body through the explosion-proof cabinet door, so that electric appliance elements of all parts are isolated from one another, when one part explodes, the influence on other parts can be reduced, and the safety of the explosion-proof cabinet is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof boxes, and more specifically, to an explosion-proof box with a multi-layer protection structure. Background Art

[0002] An explosion-proof box, also known as an explosion-proof electric box or an explosion-proof power distribution cabinet, is a specially designed device mainly applicable to various explosive hazardous environments, including petroleum and petrochemical, chemical industry, brewing, medicine, etc. The explosion-proof box aims to prevent explosion accidents caused by sparks generated inside electrical equipment. It adopts special explosion-proof materials and structural designs to prevent the ignition of combustible gases or vapors by sparks, electric arcs or high temperatures.

[0003] The patent with the Chinese patent publication number CN220342688U discloses an explosion-proof box with automatic temperature adjustment. It conducts heat to the inside of the heat dissipation cavity through a semiconductor refrigeration sheet. By setting ventilation holes and a rotatable closing plate, when the external temperature exceeds the temperature inside the heat dissipation cavity, the closing plate can close the ventilation holes to prevent external high-temperature airflows from entering the inside of the heat dissipation cavity and affecting the heat dissipation of the semiconductor refrigeration sheet and the explosion-proof box body. When the temperature inside the heat dissipation cavity exceeds the external temperature, the closing plate rotates upward to open the ventilation holes, enabling the heat dissipation cavity to interact with the outside in terms of airflows and accelerating the heat dissipation of the semiconductor refrigeration sheet and the explosion-proof box body, thereby adjusting the temperature of the explosion-proof box body.

[0004] A variety of electrical equipment is usually installed inside the explosion-proof box, such as circuit breakers, fuse switches, and relays, etc. The explosion-proof box in the above solution is integrated inside without partition isolation. If an explosion or fire occurs locally, it will quickly spread throughout the entire box body. At the same time, the arc sparks generated during the operation of electrical equipment are also likely to interfere with other equipment.

[0005] Therefore, it is necessary to provide an explosion-proof box with a multi-layer protection structure to solve the above problems. Summary of the Utility Model

[0006] The utility model provides an explosion-proof box with a multi-layer protection structure, which can improve the problems existing in the related technology that if an explosion or fire occurs locally, it will quickly spread throughout the entire box body, and at the same time, the arc sparks generated during the operation of electrical equipment are also likely to interfere with other equipment.

[0007] An embodiment of the present application provides an explosion-proof box with a multi-layer protection structure, including an explosion-proof cabinet body. An explosion-proof cabinet door is rotatably connected to the outer end of the explosion-proof cabinet body, and an external viewing window is rotatably connected to the outer end of the explosion-proof cabinet door. The explosion-proof cabinet body, the explosion-proof cabinet door, and the external viewing window are all made of aluminum alloy. An installation component is arranged inside the explosion-proof cabinet body, and an explosion-proof partition is arranged inside the explosion-proof cabinet body. The explosion-proof partition divides the interior of the explosion-proof cabinet body into a wire passing cavity and an installation cavity, and the explosion-proof partition is made of an insulating material. The installation component includes two installation frames, and a plurality of installation plates are arranged between the two installation frames.

[0008] In the above technical solution of the embodiment of the present application, it has at least the following technical effects: An explosion-proof partition is installed inside the explosion-proof cabinet body, which divides its interior into a wire passing cavity and an installation cavity. The installation component is arranged in the installation cavity, enabling the installation of electrical devices, while the wire passing cavity is used for the entry and exit of cables. A display screen is installed on the explosion-proof cabinet door, and it is isolated from the interior of the explosion-proof cabinet body through the explosion-proof cabinet door, so that the electrical components of each part are independently isolated from each other. When an explosion occurs in one place, the impact on other parts can be reduced, improving its safety.

[0009] In some embodiments, a transparent glass is installed on the outer end of the external viewing window. The transparent glass is made of tempered glass. A display screen is installed on the outer end of the explosion-proof cabinet door, and the display screen is located between the external viewing window and the explosion-proof cabinet door.

[0010] In some embodiments, a plurality of wiring ports are installed at both the top and bottom of the explosion-proof cabinet body, and a plurality of equally spaced installation holes are opened on the outer end of the explosion-proof cabinet door.

[0011] In some embodiments, a plurality of clamping blocks are fixedly connected to the side of the explosion-proof cabinet door close to the explosion-proof cabinet body, and a plurality of clamping grooves are opened on the outer end of the explosion-proof cabinet body. The clamping blocks and the clamping grooves are adapted to each other.

[0012] In some embodiments, handles are fixedly connected to both the outer end of the external viewing window and the explosion-proof cabinet door. A sealing ring is fixedly connected to the outer end of the explosion-proof cabinet body, and the outer end of the sealing ring abuts against the explosion-proof cabinet door.

[0013] In some embodiments, the installation component further includes a plurality of fixing frames. One side of the fixing frame is fixedly connected to the inner wall of the explosion-proof cabinet body, and the other side of the fixing frame is connected to the installation frame through bolts.

[0014] In some embodiments, the installation component further includes a plurality of movable rods. A plurality of equally spaced limiting grooves I are opened on the outer end of the installation frame, and a plurality of limiting grooves II are opened on the outer end of the installation plate. One end of the movable rod is fixedly connected with a limiting block, and both the limiting groove I and the limiting groove II are adapted to the limiting block.

[0015] In some embodiments, telescopic springs and limit rings are respectively sleeved on the outer ends of the movable rods. The limit rings are located between the limit blocks and the telescopic springs. The movable rods sequentially penetrate through the first limit groove and the second limit groove and extend to the inner side of the mounting bracket. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the first overall structure of the present utility model;

[0018] Figure 2 It is a schematic diagram of the second overall structure of the present utility model;

[0019] Figure 3 It is an exploded structure schematic diagram of the present utility model;

[0020] Figure 4 It is a schematic diagram of the installation component structure of the present utility model;

[0021] Figure 5 It is a partially enlarged structure schematic diagram of the installation component of the present utility model;

[0022] Figure 6 It is a schematic diagram of the back structure of the explosion-proof cabinet door of the present utility model.

[0023] Explanation of the reference numerals in the drawings:

[0024] 1. Explosion-proof cabinet body;

[0025] 2. Explosion-proof cabinet door;

[0026] 3. Outer viewing window;

[0027] 4. Handle;

[0028] 5. Transparent glass;

[0029] 6. Mounting hole;

[0030] 7. Display screen;

[0031] 8. Installation component; 81. Installation plate; 82. Mounting bracket; 83. Fixed bracket; 84. Movable rod; 85. Limit block; 86. Telescopic spring; 87. Limit ring; 88. First limit groove; 89. Second limit groove;

[0032] 9. Sealing ring;

[0033] 10. Card slot;

[0034] 11. Card block;

[0035] 12. Wiring port;

[0036] 13. Explosion-proof partition. Detailed implementation manners

[0037] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application clearer and more understandable, the following further details this application in combination with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not used to limit this application.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above accompanying drawings are intended to cover non-exclusive inclusion.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0040] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation to this application.

[0041] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more unless otherwise specifically defined.

[0042] In this application, "and / or" is merely a description of the association relationship between associated objects, indicating that three relationships can exist; for example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, in this text, the character " / " generally indicates that the associated objects before and after are in an "or" relationship.

[0043] It should be noted that in this application, words such as "in some embodiments", "exemplarily", and "for example" are used to give examples, illustrations, or explanations. Any embodiment or design solution described as "in some embodiments", "exemplarily", or "for example" in this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of words such as "in some embodiments", "exemplarily", and "for example" is intended to present relevant concepts in a specific manner, meaning that the specific features, structures, or characteristics described in combination with the embodiments can be included in at least one embodiment of this application. The appearance of the above words at various positions in the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0044] Explosion-proof enclosures are mainly applicable to a variety of explosive hazardous environments, such as oil and petrochemical, chemical, etc. environments, to prevent explosion accidents caused by the generation of sparks, electric arcs, or high temperatures inside electrical equipment. They are usually made of explosion-proof materials, such as aluminum alloy, stainless steel, etc., and have special structures and sealing designs to ensure that their internal environment does not interact with potential hazardous substances in the external environment.

[0045] Explosion-proof enclosures are mainly used to install electrical components, and usually have a variety of electrical equipment installed inside, such as circuit breakers, fuse switches, and relays, etc. If an individual electrical component installed inside undergoes a short-circuit explosion and catches fire, it will quickly spread throughout the entire enclosure.

[0046] Based on this, it is possible to improve the problem in the related art that when an explosion and fire occur locally, it will quickly spread throughout the entire enclosure, and at the same time, the electric arc sparks generated when the electrical equipment operates are also likely to interfere with other equipment.

[0047] Please refer to Figures 1 - 6, an explosion-proof box with a multi-layer protection structure, including an explosion-proof cabinet 1, an explosion-proof cabinet door 2 is rotatably connected to the outer end of the explosion-proof cabinet 1, and an external window 3 is rotatably connected to the outer end of the explosion-proof cabinet door 2. The explosion-proof cabinet 1, the explosion-proof cabinet door 2 and the external window 3 are all made of aluminum alloy. An installation component 8 is arranged inside the explosion-proof cabinet 1, and an explosion-proof partition 13 is arranged inside the explosion-proof cabinet 1. The explosion-proof partition 13 divides the interior of the explosion-proof cabinet 1 into a threading cavity and an installation cavity, and the explosion-proof partition 13 is made of insulating material. The installation component 8 includes two mounting frames 82, and a plurality of mounting plates 81 are arranged between the two mounting frames 82.

[0048] The explosion-proof cabinet 1, explosion-proof cabinet door 2 and external window 3 in this scheme are all made of aluminum alloy, which can effectively isolate the internal electrical components from the outside. Even if an explosion or fire occurs, it will not spread to the external environment, so that it can play an explosion-proof effect. An explosion-proof partition 13 is installed inside the explosion-proof cabinet 1. The explosion-proof partition 13 is installed on the back plate of the explosion-proof cabinet 1 through long bolts, dividing the interior of the explosion-proof cabinet 1 into a threading cavity and an installation cavity. The gap between the explosion-proof partition 13 and the back plate of the explosion-proof cabinet 1 is the threading cavity, and the other side is the installation cavity. The mounting assembly 8 is arranged in the mounting cavity. The mounting assembly 8 is mainly used to install various electrical components. The cables of the electrical components installed on the mounting assembly 8 can pass through the bottom of the explosion-proof partition 13 into the threading cavity, and then the cables can pass out or enter through the wiring ports 12 installed on the top and bottom ends of the explosion-proof cabinet 1. The explosion-proof partition 13 is made of insulating materials, such as epoxy resin or glass fiber, which isolates the cables and electrical components. When an explosion or combustion occurs in one of them, the impact on other parts can be reduced, thereby improving its safety.

[0049] Optionally, in some embodiments, see Figure 2 A transparent glass 5 is installed at the outer end of the external window 3, and the transparent glass 5 is made of tempered glass. A display screen 7 is installed at the outer end of the explosion-proof cabinet door 2, and the display screen 7 is located between the external window 3 and the explosion-proof cabinet door 2.

[0050] A display screen 7 is provided at the outer end of the explosion-proof cabinet door 2. The display screen 7 is mainly used to display the working status of the electrical components inside the explosion-proof cabinet 1, so that the user can monitor the operating data in real time. An external viewing window 3 is also installed at the outer end of the explosion-proof cabinet door 2. The external viewing window 3 is mainly used to isolate the display screen 7 from the external environment. If a short circuit occurs in the display screen 7 and a fire occurs, it can be prevented from spreading to the outside, and it also plays a role in protecting the display screen 7.

[0051] Optionally, in some embodiments, see Figure 2 The top and bottom of the explosion-proof cabinet body 1 are both provided with a plurality of wiring ports 12, and the outer end of the explosion-proof cabinet door 2 is provided with a plurality of mounting holes 6 which are equidistantly distributed.

[0052] A plurality of wiring ports 12 are installed at both the top and bottom of the explosion-proof cabinet body 1, mainly for introducing and passing out cables. The multiple mounting holes 6 provided on the explosion-proof cabinet door 2 are used for mounting control switches, so that when some simple power-off or restart operations are required, there is no need to open the explosion-proof cabinet door 2 for operation.

[0053] Optionally, in some embodiments, please refer to Figure 2 and Figure 6 , a plurality of clamping blocks 11 are fixedly connected to the side of the explosion-proof cabinet door 2 close to the explosion-proof cabinet body 1, and a plurality of clamping grooves 10 are opened at the outer end of the explosion-proof cabinet body 1. The clamping blocks 11 and the clamping grooves 10 are adapted to each other.

[0054] Handles 4 are fixedly connected to the outer ends of both the external window 3 and the explosion-proof cabinet door 2, and a sealing ring 9 is fixedly connected to the outer end of the explosion-proof cabinet body 1. The outer end of the sealing ring 9 abuts against the explosion-proof cabinet door 2.

[0055] The clamping grooves 10 opened at the outer end of the explosion-proof cabinet body 1 exactly match the clamping blocks 11 fixed on the explosion-proof cabinet door 2, so that the explosion-proof cabinet door 2 can be clamped tightly when it is closed with the explosion-proof cabinet body 1. A sealing ring 9 is also fixedly installed on the explosion-proof cabinet body 1. When the explosion-proof cabinet body 1 and the explosion-proof cabinet door 2 are clamped tightly through the clamping grooves 10 and the clamping blocks 11, the sealing ring 9 will form a seal between the explosion-proof cabinet body 1 and the explosion-proof cabinet door 2 to prevent external gas from entering and improve safety.

[0056] Optionally, in some embodiments, please refer to Figures 3 - 5 , the installation component 8 further includes a plurality of fixing frames 83. One side of the fixing frame 83 is fixedly connected to the inner wall of the explosion-proof cabinet body 1, and the other side of the fixing frame 83 is connected to the mounting frame 82 by bolts.

[0057] The installation component 8 further includes a plurality of movable rods 84. A plurality of equally spaced first limiting grooves 88 are opened at the outer end of the mounting frame 82, and a plurality of second limiting grooves 89 are opened at the outer end of the mounting plate 81. One end of the movable rod 84 is fixedly connected with a limiting block 85. Both the first limiting grooves 88 and the second limiting grooves 89 are adapted to the limiting block 85.

[0058] Telescopic springs 86 and limiting rings 87 are respectively sleeved on the outer ends of the movable rods 84. The limiting ring 87 is located between the limiting block 85 and the telescopic spring 86. The movable rods 84 sequentially penetrate through the first limiting grooves 88 and the second limiting grooves 89 and extend to the inner side of the mounting frame 82.

[0059] The installation component 8 in this solution is mainly used to install electrical components. A plurality of fixing brackets 83 are symmetrically fixed on both sides inside the explosion-proof cabinet body 1. Two mounting brackets 82 are installed on the fixing brackets 83 through bolts. A plurality of mounting plates 81 can be arranged between the two mounting brackets 82. The mounting plate 81 is made of thin aluminum plate. Electrical components can be directly installed on the mounting plate 81 through bolts. Among them, the mounting plate 81 is detachably connected to the mounting bracket 82, and the installation height can be adjusted. A second limiting groove 89 and a first limiting groove 88 are respectively opened on the abutting surfaces of the mounting plate 81 and the mounting bracket 82. The outer shapes and sizes of the second limiting groove 89 and the first limiting groove 88 are the same, mainly to facilitate the penetration of the movable rod 84. A limiting block 85 is fixed at the end of the movable rod 84. The shape of the limiting block 85 is the same as that of the first limiting groove 88 and the second limiting groove 89. At the same time, a telescopic spring 86 and a limiting ring 87 are sleeved on the outer end of the movable rod 84. When the limiting block 85 penetrates the first limiting groove 88 and the second limiting groove 89, the limiting ring 87 will abut against the mounting plate 81, resulting in the compression of the telescopic spring 86. At this time, when the movable rod 84 is rotated, since the movable rod 84, the first limiting groove 88 and the second limiting groove 89 are all arranged in a similar rectangular shape, the limiting block 85 will be blocked by the first limiting groove 88. At this time, through the acting force of the telescopic spring 86, the limiting ring 87 and the limiting block 85 are clamped with each other, making it not easy to fall off, so as to facilitate the installation and adjustment of the position of the mounting plate 81 and improve its use convenience.

[0060] Working principle: An explosion-proof partition 13 is installed inside the explosion-proof cabinet body 1 of the device, dividing the inside of the explosion-proof cabinet body 1 into a wire threading cavity and an installation cavity. The installation component 8 is arranged in the installation cavity. The cables of the electrical components installed on the installation component 8 can pass from below the explosion-proof partition 13 to the wire threading cavity. The explosion-proof partition 13 is made of insulating material to isolate the cables and electrical components. When an explosion and combustion occur in one place, it can delay the impact on other parts and improve its safety. When installing electrical components, first, the mounting plate 81 needs to be installed on the mounting bracket 82. When the limiting block 85 fixed on the movable rod 84 penetrates the first limiting groove 88 and the second limiting groove 89, the limiting ring 87 will abut against the mounting plate 81, causing the telescopic spring 86 to be compressed. At this time, when the movable rod 84 is rotated, the limiting block 85 will be blocked by the first limiting groove 88. At this time, through the acting force of the telescopic spring 86, the limiting ring 87 and the limiting block 85 are clamped with each other, and then the rest are installed in turn to complete the installation.

[0061] The above is only a preferred specific embodiment of the present invention; however, the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and its improvement concept of the present invention, makes equivalent substitutions or changes, and all should be covered by the protection scope of the present invention.

Claims

1. An explosion-proof box with a multi-layer protection structure, comprising an explosion-proof cabinet (1), characterized in that: The outer end of the explosion-proof cabinet (1) is rotatably connected to an explosion-proof cabinet door (2), and the outer end of the explosion-proof cabinet door (2) is rotatably connected to an external viewing window (3). The explosion-proof cabinet (1), the explosion-proof cabinet door (2) and the external viewing window (3) are all made of aluminum alloy. An installation component (8) is arranged inside the explosion-proof cabinet (1), and an explosion-proof partition (13) is arranged inside the explosion-proof cabinet (1). The explosion-proof partition (13) divides the interior of the explosion-proof cabinet (1) into a threading cavity and an installation cavity, and the explosion-proof partition (13) is made of an insulating material. The mounting assembly (8) comprises two mounting frames (82), and a plurality of mounting plates (81) are arranged between the two mounting frames (82).

2. The explosion-proof box with a multi-layer protection structure according to claim 1, characterized in that: The outer end of the external viewing window (3) is provided with a transparent glass (5), the transparent glass (5) being made of tempered glass; the outer end of the explosion-proof cabinet door (2) is provided with a display screen (7), the display screen (7) being located between the external viewing window (3) and the explosion-proof cabinet door (2).

3. The explosion-proof box with a multi-layer protection structure according to claim 1, characterized in that: The top and bottom ends of the explosion-proof cabinet (1) are both provided with a plurality of wiring ports (12), and the outer end of the explosion-proof cabinet door (2) is provided with a plurality of installation holes (6) distributed at equal distances.

4. The explosion-proof box with a multi-layer protection structure according to claim 1, characterized in that: A plurality of clamping blocks (11) are fixedly connected to a side of the explosion-proof cabinet door (2) close to the explosion-proof cabinet body (1); a plurality of clamping slots (10) are provided at the outer end of the explosion-proof cabinet body (1); and the clamping blocks (11) and the clamping slots (10) are adapted to each other.

5. The explosion-proof box with a multi-layer protection structure according to claim 1, characterized in that: The outer ends of the external viewing window (3) and the explosion-proof cabinet door (2) are both fixedly connected with a handle (4), the outer end of the explosion-proof cabinet body (1) is fixedly connected with a sealing ring (9), and the outer end of the sealing ring (9) is in contact with the explosion-proof cabinet door (2).

6. The explosion-proof box with a multi-layer protection structure according to claim 1, characterized in that: The mounting assembly (8) further comprises a plurality of fixing frames (83), one side of the fixing frames (83) being fixedly connected to the inner wall of the explosion-proof cabinet (1), and the other side of the fixing frames (83) being connected to the mounting frame (82) via bolts.

7. The explosion-proof box with a multi-layer protection structure according to claim 6, characterized in that: The mounting assembly (8) further comprises a plurality of movable rods (84), a plurality of equidistantly distributed limiting grooves (88) are provided at the outer end of the mounting frame (82), a plurality of second limiting grooves (89) are provided at the outer end of the mounting plate (81), one end of the movable rod (84) is fixedly connected to a limiting block (85), and the first limiting groove (88) and the second limiting groove (89) are both adapted to the limiting block (85).

8. The explosion-proof box with a multi-layer protection structure according to claim 7, characterized in that: The outer ends of the movable rod (84) are respectively sleeved with a telescopic spring (86) and a limiting ring (87), and the limiting ring (87) is located between the limiting block (85) and the telescopic spring (86). The movable rod (84) sequentially passes through the limiting groove 1 (88) and the limiting groove 2 (89), and extends to the inner side of the mounting frame (82).

Images