Explosion-proof and intrinsically safe electric cabinet

Abstract

The utility model relates to the technical field of power generation control boxes, in particular to an explosion-proof and intrinsically safe electric control box which comprises a box body. The junction box is arranged above the box body; the front door is arranged on the first side wall of the box body and is hinged to the box body through a hinge; the rear door is arranged on the second side wall of the box body; and an electrical part tray and a drying agent box are arranged in the box body. The front door and the rear door can be opened at the same time, so that internal electrical elements are convenient to assemble and maintain. And electrical elements are intensively mounted on the electrical element tray, so that the assembly and maintenance are convenient, and the space is saved. The desiccant box is filled with desiccant, so that the interior of the electric cabinet is dry, and internal parts are prevented from being corroded and short-circuited due to moisture.

Description

Technical Field

[0001] This application relates to the field of power control box technology, and in particular to an explosion-proof and intrinsically safe power control box. Background Technology

[0002] Explosion-proof and intrinsically safe electrical control boxes are typically installed on downhole equipment, primarily to provide a safe installation location for the electrical components in the control system of the downhole equipment. During operation, the electrical components inside the control box perform various controls on the entire vehicle, thereby enabling the downhole equipment to operate.

[0003] Traditional electrical control boxes are integral chambers with only a front door, making it difficult to assemble and maintain large internal components. The design of the switch knob structure has assembly gaps, allowing dust and moisture to enter the electrical control box and easily cause corrosion. Therefore, the performance is not ideal in environments with high humidity or continuous water accumulation. Utility Model Content

[0004] This application aims to at least solve one of the technical problems in existing or related technologies: traditional electrical control boxes are integral chambers with only a front door, which makes it difficult to assemble and maintain large internal components; the design of the switch knob structure has assembly gaps, through which dust and moisture can enter the electrical control box, easily causing corrosion. Therefore, the performance is not ideal in environments with high humidity or continuous water accumulation.

[0005] Therefore, this application provides an explosion-proof and intrinsically safe electrical control box, which adopts a front and rear door arrangement, allowing both doors to be opened simultaneously for convenient assembly and maintenance of internal electrical components. Electrical components are centrally mounted on an electrical component tray, facilitating assembly and maintenance while saving space. A desiccant box contains desiccant to ensure the interior of the control box remains dry, preventing internal components from corroding and short-circuiting due to moisture.

[0006] An explosion-proof and intrinsically safe electrical control box according to an embodiment of this application includes: a box body; a junction box disposed on the top of the box body; a front door disposed on the first side wall of the box body and hinged to the box body via a hinge; a rear door disposed on the second side wall of the box body; and an electrical component tray and a desiccant box disposed inside the box body.

[0007] Optionally, a top cover is provided on the junction box.

[0008] Optionally, the junction box is equipped with explosion-proof glands around its perimeter.

[0009] Optionally, the electrical component tray can be designed as a drawer.

[0010] Optionally, a first water-cooled plate is provided inside the enclosure, and the first water-cooled plate is located on the side wall of the enclosure.

[0011] Optionally, a second water-cooled plate is provided inside the enclosure, located on the bottom plate of the enclosure.

[0012] Optionally, a lifting ring is provided on the third side wall of the enclosure.

[0013] Optionally, a mounting bracket is provided on the third side wall of the enclosure.

[0014] Optionally, sealing ropes are provided on the front and rear doors.

[0015] Optionally, there are two rear doors, which are detachably connected to the housing by multiple bolts around the perimeter.

[0016] One of the above technical solutions has at least the following advantages or beneficial effects:

[0017] An explosion-proof and intrinsically safe electrical control box provided in this application includes: a box body; a junction box disposed on top of the box body; a front door disposed on the first side wall of the box body and hinged to the box body; and a rear door disposed on the second side wall of the box body. An electrical component tray and a desiccant box are provided inside the box body. The front and rear door arrangement allows both doors to be opened simultaneously, facilitating the assembly and maintenance of internal electrical components. The electrical components are centrally mounted on the electrical component tray, simplifying assembly and maintenance while saving space. The desiccant box contains desiccant to keep the inside of the electrical control box dry and prevent internal components from corroding and short-circuiting due to moisture. Attached Figure Description

[0018] 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.

[0019] Figure 1 This illustration shows one of the structural schematic diagrams of an explosion-proof and intrinsically safe electrical control box provided in an embodiment of this application;

[0020] Figure 2 This is a second schematic diagram of the structure of an explosion-proof and intrinsically safe electrical control box provided in an embodiment of this application;

[0021] Figure 3 This illustration shows a structural schematic diagram of an electrical component tray in an explosion-proof and intrinsically safe electrical control box according to an embodiment of this application;

[0022] Figure 4 This illustration shows a schematic diagram of the structure of an explosion-proof and intrinsically safe electrical control box with its electrical component tray removed, according to an embodiment of this application.

[0023] [Explanation of Labels in the Attached Image]

[0024] 1. Junction box; 11. Top cover; 12. Explosion-proof gland; 2. Enclosure; 21. Electrical component tray; 22. First water-cooled plate; 23. First water-cooled connector; 24. Second water-cooled plate; 25. Second water-cooled connector; 26. Desiccant box; 3. Front door; 31. Hinges; 4. Rear door; 5. Lifting ring; 6. Mounting bracket. Detailed Implementation

[0025] To better explain and facilitate understanding of this application, a detailed description of the application is provided below with reference to the accompanying drawings and specific embodiments. The directional terms such as "upper," "lower," "inner," and "outer" mentioned herein are used in conjunction with... Figure 1 and Figure 3 The orientation is used as a reference. The position of junction box 1 relative to enclosure 2 is defined as "upper"; the position of electrical component tray 21 relative to enclosure 2 is defined as "inner".

[0026] As mentioned above, coal mining is a crucial process for obtaining coal resources. It involves excavating a series of shafts to access the underground coal seam and then carrying out mining operations. The high humidity underground, along with frequent dripping and water droplets, can cause a decrease in the insulation resistance of electrical equipment, accelerating corrosion and aging, and shortening its lifespan. Furthermore, the presence of flammable and explosive gases such as methane underground can easily lead to explosions if electrical equipment generates sparks or arcs. Additionally, the air underground is filled with fine particles such as coal dust, which can cause poor contact and short circuits within electrical equipment. Long-term accumulation of dust can also lead to electrical fires or explosions. Therefore, explosion-proof and intrinsically safe electrical control boxes are required for underground equipment.

[0027] However, traditional electrical control boxes are an integral cavity with only a front door, making it difficult to assemble and maintain large internal components. The design of the switch knob structure has assembly gaps, through which dust and moisture can enter the electrical control box, easily causing corrosion. Therefore, in environments with high humidity or continuous water accumulation, the performance is far from ideal.

[0028] To address at least one of the technical problems existing in the prior art or related technologies, this application provides an explosion-proof and intrinsically safe electrical control box, comprising: a box body; a junction box disposed on top of the box body; a front door disposed on the first side wall of the box body and hinged to the box body; a rear door disposed on the second side wall of the box body; and an electrical component tray and a desiccant box inside the box body. The front and rear door arrangement allows both doors to be opened simultaneously, facilitating the assembly and maintenance of internal electrical components. The electrical components are centrally mounted on the electrical component tray, simplifying assembly and maintenance and saving space. The desiccant box contains desiccant to ensure the interior of the electrical control box remains dry, preventing internal components from corroding and short-circuiting due to moisture.

[0029] The following description, with reference to the accompanying drawings, describes an engine hood support device according to some embodiments provided in this application.

[0030] See Figures 1 to 4 The present application provides an explosion-proof and intrinsically safe electrical control box, comprising: a box body 2; a junction box 1 disposed above the box body 2; a front door 3 disposed on the first side wall of the box body 2, the front door 3 being hinged to the box body 2 via a hinge 31; a rear door 4 disposed on the second side wall of the box body 2; and an electrical component tray 21 and a desiccant box 26 disposed inside the box body 2.

[0031] The enclosure 2 is a cuboid made of high-strength metal materials, such as carbon steel and alloys, which have excellent strength and rigidity. The outer shell of the enclosure 2 can prevent explosive gases or dust from entering the interior of the enclosure 2. Even if an explosion occurs inside due to an electric spark or arc, the outer shell can withstand the explosion pressure and prevent the flame from spreading to the external environment, thereby ensuring the safety of surrounding equipment and personnel.

[0032] like Figure 1 As shown, the front door 3 is hinged and covers the first side wall of the enclosure 2. This hinged design allows the front door 3 to be opened easily without the need for complex tools. Covering the first side wall of the enclosure 2 provides more operating space, making electrical equipment installation and maintenance more convenient. Simultaneously, the thickness of the front door 3 is greater than the thickness of the side wall of the enclosure 2, and multiple bolts connect the front door 3 to the enclosure 2 around its perimeter. Thus, the front door 3, as a sealing component of the first side wall of the enclosure 2, effectively protects the internal electrical components and provides explosion protection. The rear door 4 uses a suspended opening design without hinges, eliminating the need for a large rear clearance and saving space. With this front and rear door arrangement, both the front door 3 and the rear door 4 can be opened simultaneously, facilitating the assembly and maintenance of internal electrical components.

[0033] The internal cavity of junction box 1 is connected to the internal cavity of enclosure 2. Electrical components are installed in enclosure 2, while wiring is concentrated in junction box 1. This design makes wiring simpler and more organized, facilitating installation and maintenance and reducing the risk of malfunctions caused by messy wiring. At the same time, junction box 1 serves as a dedicated wiring area, and can accommodate terminal blocks, terminals, and other components, making the wiring layout more rational and enhancing the reliability and stability of electrical connections.

[0034] like Figure 3As shown, the electrical component tray 21 is used to centrally install electrical components, forming an orderly assembly unit. This makes the assembly process more organized and efficient, reducing the possibility of assembly errors and omissions. Furthermore, by centrally installing electrical components, space utilization is effectively improved. When electrical components need to be inspected or replaced, the design of the electrical component tray 21 allows operators to quickly locate the required components without having to search through complex wiring, thereby improving maintenance efficiency.

[0035] The desiccant box 26 contains desiccant to keep the inside of the electrical control box dry and prevent internal components from corroding and short-circuiting due to moisture. The main function of the desiccant is to absorb moisture from the air. By placing the desiccant in the desiccant box 26, the humidity inside the box 2 can be effectively reduced.

[0036] Furthermore, the desiccant box 26 can be installed on the inner wall of the front door 3, which facilitates regular replacement of the desiccant. During periodic maintenance, operators can easily replace the desiccant by opening the front door 3, avoiding the cumbersome process of disassembling other parts to replace the desiccant.

[0037] In one illustrative embodiment, a top cover 11 is provided on top of the junction box 1. The top cover 11 is provided with multiple bolts around its perimeter and is detachably connected to the junction box 1. By opening the top cover 11, various operations can be easily performed on the inside of the junction box 1, such as connecting wires, checking the circuit status, or performing maintenance, thereby improving the usability and maintainability of the junction box 1.

[0038] Furthermore, the top cover 11 is provided with a sealing rope, which is made of elastic or flexible material and can fit tightly in the gap between the top cover 11 and the main body of the junction box 1, effectively preventing external pollutants such as dust, moisture, and gas from entering the interior of the junction box 1.

[0039] In one illustrative embodiment, the junction box 1 is equipped with explosion-proof cable glands 12 around its perimeter. Cable glands, also known as waterproof cable connectors or cable fixing heads, secure the cable, preventing axial displacement and radial rotation during use, thus ensuring a normal and stable cable connection. The explosion-proof cable glands 12 can introduce and fix the cable in place, while also providing sealing and explosion protection. They offer advantages such as superior explosion-proof performance, reliable and safe structure, and simple and convenient installation, ensuring the safe operation of equipment in explosive environments.

[0040] Furthermore, the explosion-proof gland 12 is arranged in a matrix around the junction box 1. The matrix arrangement can make the most of the space around the junction box 1, making the cable connection more compact and efficient.

[0041] In one illustrative embodiment, such as Figure 4As shown, the electrical component tray 21 adopts a drawer-type design. The drawer-type design allows the electrical component tray 21 to be easily inserted or removed, facilitating operators to inspect, replace, or upgrade electrical components, simplifying management and maintenance, and improving space utilization.

[0042] Furthermore, the electrical component tray 21 is equipped with locking bolts, which are used to fix the electrical component tray 21 and prevent the electrical component tray 21 from shifting or falling off during operation. When maintenance or repair is required, the operator can unlock the locking bolts to pull out the electrical component tray 21 and perform maintenance or repair on the electrical components.

[0043] In one illustrative embodiment, a first water-cooled plate 22 is provided inside the housing 2, and the first water-cooled plate 22 is located on the side wall of the housing 2. A first water-cooling connector 23 of the first water-cooled plate 22 is located on the outer side wall of the housing 2. Coolant is injected through the first water-cooling connector 23. The first water-cooled plate 22 uses the circulation of coolant to remove the heat generated by the components inside the housing 2. This heat dissipation method is more efficient and can ensure that the equipment operates within a suitable temperature range. At the same time, the first water-cooled plate 22 is manufactured as a single piece, and the first water-cooling connector 23 is on the outer side wall of the housing 2, so there is no risk of liquid leakage.

[0044] In one illustrative embodiment, a second water-cooled plate 24 is provided inside the housing 2, and the second water-cooled plate 24 is located on the bottom plate of the housing 2. The second water-cooled connector 25 of the second water-cooled plate 24 is located on the outer side of the side wall of the housing 2, and the second water-cooled plate 24, together with the first water-cooled plate 22, achieves higher heat dissipation efficiency.

[0045] In one illustrative embodiment, a lifting ring 5 is provided on the third side wall of the housing 2. The lifting ring 5 provides a secure lifting point, allowing the housing 2 to be easily transported and moved using lifting equipment. Using the lifting ring 5 for transport can greatly improve work efficiency and save time and manpower.

[0046] In one illustrative embodiment, a mounting bracket 6 is provided on the third side wall of the housing 2. The mounting bracket 6 is used to securely install the housing 2 onto the downhole equipment. Through the mounting bracket 6, the housing 2 can be firmly installed in the designated position to prevent it from falling off or shifting due to vibration, impact or other factors.

[0047] Furthermore, the mounting frame 6 is equipped with multiple triangular reinforcing ribs, which make the mounting frame 6 more stable when subjected to external forces, less prone to deformation or overturning, and increase the stability and robustness of the box 2 on the downhole equipment.

[0048] In one illustrative embodiment, sealing ropes are provided on the front door 3 and the rear door 4. The sealing ropes can compress and fill the tiny gaps between the front door 3, the rear door 4 and the housing 2, preventing the entry of harmful substances such as dust and moisture, and improving the sealing performance.

[0049] In one illustrative embodiment, such as Figure 2 As shown, there are two rear doors 4, which are detachably connected to the housing 2 by multiple bolts arranged around their perimeter. The two rear doors 4 can be symmetrically distributed on the second side wall of the housing 2, and can be flexibly opened or closed as needed to adapt to different operational requirements. The multiple bolts around the rear doors 4 ensure a secure connection between them and the housing 2. The even distribution of the bolts provides better stability and load-bearing capacity, preventing the rear doors 4 from deforming or detaching under external forces.

[0050] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0051] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0052] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0053] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "exemplary model," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0054] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An explosion-proof and intrinsically safe electrical control box, characterized in that, include: Box (2); Junction box (1) is located above the enclosure (2); A front door (3) is provided on the first side wall of the housing (2), and the front door (3) is hinged to the housing (2) by a hinge (31); The rear door (4) is located on the second side wall of the housing (2); The box (2) is equipped with an electrical component tray (21) and a desiccant box (26) inside.

2. The explosion-proof and intrinsically safe electrical control box as described in claim 1, characterized in that, The junction box (1) is provided with a top cover (11).

3. The explosion-proof and intrinsically safe electrical control box as described in claim 1, characterized in that, The junction box (1) is equipped with explosion-proof glands (12) around its perimeter.

4. The explosion-proof and intrinsically safe electrical control box as described in claim 1, characterized in that, The electrical component tray (21) adopts a drawer-type design.

5. The explosion-proof and intrinsically safe electrical control box as described in claim 1, characterized in that, The box (2) is provided with a first water-cooled plate (22) inside, and the first water-cooled plate (22) is located on the side wall of the box (2).

6. The explosion-proof and intrinsically safe electrical control box as described in claim 1, characterized in that, The box (2) is provided with a second water-cooled plate (24) inside, and the second water-cooled plate (24) is located on the bottom plate of the box (2).

7. The explosion-proof and intrinsically safe electrical control box as described in claim 1, characterized in that, The third side wall of the box (2) is provided with a lifting ring (5).

8. The explosion-proof and intrinsically safe electrical control box as described in claim 1, characterized in that, The third side wall of the housing (2) is provided with a mounting bracket (6).

9. The explosion-proof and intrinsically safe electrical control box as described in claim 1, characterized in that, Sealing ropes are provided on the front door (3) and the rear door (4).

10. The explosion-proof and intrinsically safe electrical control box as described in claim 1, characterized in that, There are two rear doors (4), and the rear doors (4) are detachably connected to the box body (2) by multiple bolts arranged around the perimeter.

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