Intelligent control explosion-proof distribution box

Abstract

This invention relates to the field of distribution boxes, and more particularly to an intelligent explosion-proof distribution box. It includes a mounting frame; a box body connected to the mounting frame; and a protective door installed on the box body. This invention achieves the following: by attaching the installed electrical components to the mounting plate, the mounting plate absorbs the heat from the electrical components, which is then conducted to the fins within the heat dissipation cavity. The airflow formed within the heat dissipation cavity then dissipates heat from the fins and the mounting plate. Simultaneously, the mounting plate separates the box body from the heat dissipation cavity, preventing external airflow from entering the box body during the heat dissipation process. This solves the inherent conflict between heat dissipation requirements and explosion-proof safety in existing outdoor distribution cabinet designs. Furthermore, by using the heat dissipation cavity as the connecting carrier between the box body and the mounting frame, when an electrical component inside the box explodes, the mounting plate and the heat dissipation cavity buffer the residual vibrations from the explosion, reducing the impact of the explosion on the mounting frame.

Description

Technical Field

[0001] This invention relates to the field of distribution boxes, and more particularly to an intelligent explosion-proof distribution box. Background Technology

[0002] During operation, outdoor distribution cabinets continuously generate heat from their internal electrical components (such as circuit breakers, contactors, and frequency converters). The industry standard solution is to create heat dissipation slots (or ventilation holes) on the cabinet enclosure. These slots allow for air circulation between the inside and outside of the cabinet, and natural convection or forced convection by auxiliary fans is used to dissipate the heat from inside the cabinet to the outside, thereby reducing the internal temperature and ensuring that the electrical components operate within a suitable temperature range. This heat dissipation method has advantages such as simple structure, low cost, and high heat dissipation efficiency, and is therefore widely used in the design of various outdoor distribution cabinets.

[0003] However, outdoor power distribution cabinets are susceptible to malfunctions due to various factors such as aging electrical components, short circuits, overload operation, and harsh environmental corrosion during actual use. In extreme cases, this can lead to spontaneous combustion or even explosions inside the cabinet. The presence of heat dissipation ducts allows the inside of the distribution box to be directly connected to the external environment. A large amount of oxygen from the outside air will continuously enter the distribution box through the heat dissipation ducts, providing sufficient conditions for spontaneous combustion and accelerating the combustion process. At the same time, in the event of an explosion, the heat dissipation ducts cannot form an effective seal, which will not only cause the shock wave generated by the explosion to spread directly to the outside, causing casualties and equipment damage, but may also exacerbate the explosive force due to the rapid influx of outside air, further expanding the scope of the accident. Summary of the Invention

[0004] In order to overcome the inherent conflict between heat dissipation requirements and explosion-proof safety in the design of existing outdoor power distribution cabinets, this invention provides an intelligent explosion-proof power distribution box.

[0005] The technical solution is as follows: an intelligent explosion-proof distribution box, including a fixed frame; a box body connected to the fixed frame; a protective door installed on the box body; and a heat dissipation box connected to the fixed frame; a heat dissipation cavity is opened inside the heat dissipation box; a mounting plate is fixedly connected to the heat dissipation box; the rear side of the mounting plate penetrates the heat dissipation box and communicates with the heat dissipation cavity; the front side of the mounting plate penetrates the box body and is welded and fixed to the box body; a mounting plate is welded to the heat dissipation box; several fins are fixedly connected to the mounting plate, each fin being located inside the heat dissipation cavity; two fixing strips are fixedly connected to the mounting plate; each fixing strip has a sliding groove; each sliding groove... Several sliding rods are slidably connected within the slot; each sliding rod is threaded with a first nut, a second nut, and a third nut from back to front; several guide rails are slidably connected on the mounting plate; each guide rail has a slider fixed at both ends; each slider is slidably connected to its corresponding sliding rod; each slider is located between its corresponding second nut and third nut; a fixing block is fixedly connected to each sliding rod; a locking block is rotatably connected to each fixing block, with the locking block's rotation limit being perpendicular to the fixing block; a heat dissipation assembly for cooling the electrical components inside the heat dissipation box is connected to the heat dissipation box.

[0006] Furthermore, the heat dissipation assembly includes fins and air boxes connected to the mounting plate; each fin is located inside the heat dissipation cavity; and two left-right symmetrical air boxes are fixed to the heat dissipation box.

[0007] Furthermore, it also includes a clamping block fixed to the end of the sliding rod away from the slide groove and used to press against the protective door.

[0008] Furthermore, each fixing bar has a scale line on its front side; each sliding rod has an indicator line on its sliding part within the groove.

[0009] Furthermore, the mounting plate is an alumina ceramic plate.

[0010] Furthermore, each fin is inverted V-shaped; a drainage groove is provided on the lower side of the heat sink.

[0011] Furthermore, each fin is made of pure copper.

[0012] Furthermore, a temperature sensor is installed on the mounting plate.

[0013] Furthermore, it also includes a reinforcing plate fixed to the frame, which together with the frame forms a stable triangular support structure.

[0014] Furthermore, several warning signs are installed on the protective door.

[0015] The beneficial effects are as follows: by attaching the installed electrical components to the mounting plate, the mounting plate absorbs the heat of the electrical components and then conducts it to the fins in the heat dissipation cavity. The airflow formed in the heat dissipation cavity then dissipates heat from the fins and the mounting plate. At the same time, the mounting plate separates the enclosure from the heat dissipation box, preventing external airflow from entering the enclosure during the heat dissipation process. This solves the inherent conflict between heat dissipation requirements and explosion-proof safety in the design of existing outdoor power distribution cabinets. By using the heat dissipation box as the connecting carrier between the enclosure and the fixed frame, when the electrical components inside the enclosure explode, the mounting plate and heat dissipation cavity buffer the vibration aftershocks generated by the explosion, reduce the impact of the explosion on the fixed frame, and prevent the fixed frame from collapsing after the explosion, thus avoiding harm to the surrounding personnel. The adjustable components allow for free installation and adjustment of the guide rails and electrical components without the need for additional drilling and fixing, greatly improving the portability of the distribution box installation and adjustment. Furthermore, adjusting the front and rear positions of the guide rails allows the corresponding electrical components to fit snugly against the mounting plate, thus solving the problem of traditional fixed guide rail installation structures that require a large fitting gap between the guide rail and the mounting plate, which prevents some electrical components from fitting snugly against the mounting plate and affects the heat dissipation effect of the mounting plate on the electrical components. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the intelligent explosion-proof distribution box according to Embodiment 2 of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the combination of the housing, heat dissipation box, mounting plate, fixing strip, guide rail and sliding rod in Embodiment 1 of the present invention.

[0018] Figure 3 This is a three-dimensional structural diagram of the combination of the fixing bar, guide rail, sliding rod, first nut, second nut and third nut in Embodiment 1 of the present invention.

[0019] Figure 4 This is a schematic diagram of the three-dimensional structure of the fixing block and the card block in Embodiment 1 of the present invention.

[0020] Figure 5 This is an exploded view of the housing, heat dissipation box, mounting plate, and fixing strip of Embodiment 1 of the present invention.

[0021] Figure 6 This is a cross-sectional perspective view of the heat sink of Embodiment 1 of the present invention.

[0022] Figure 7 This is a schematic diagram of the three-dimensional structure of the combined box, heat dissipation box, mounting plate, guide rail, sliding rod and clamping block of Embodiment 1 of the present invention.

[0023] Component names and serial numbers in the diagram: 1-Fixed frame, 2-Box body, 2001-Protective door, 2002-Warning sign, 101-Heat dissipation box, 10101-Heat dissipation cavity, 10102-Drainage groove, 102-Mounting plate, 103-Fixing strip, 10301-Slide groove, 10302-Scale line, 104-Guide rail, 10401-Slider, 105-Sliding rod, 10501-Indicator line, 106-First nut, 107-Second nut, 108-Third nut, 109-Clamping block, 201-Fin, 202-Air box, 203-Fixing block, 204-Clamping block, 205-Reinforcing plate. Detailed Implementation

[0024] The preferred technical solution of the present invention will be described in detail below with reference to the accompanying drawings.

[0025] Example 1: A smart explosion-proof distribution box, such as Figures 2-7 As shown, it includes a fixing frame 1 and a box 2; the fixing frame 1 is connected to the box 2; a protective door 2001 is installed on the box 2; It also includes a heat dissipation box 101, a mounting plate 102, fixing strips 103, a guide rail 104, a sliding rod 105, a first nut 106, a second nut 107, a third nut 108, a fixing block 203, a locking block 204, and a heat dissipation assembly; the heat dissipation box 101 is bolted to the fixing frame 1; a heat dissipation cavity 10101 is opened inside the heat dissipation box 101; the mounting plate 102 is welded to the heat dissipation box 101, and the mounting plate 102 is made of thermally conductive material; the rear side of the mounting plate 102 passes through the heat dissipation box 101 and communicates with the heat dissipation cavity 10101; the front side of the mounting plate 102 passes through the box body 2 and is welded and fixed to the box body 2; two fixing strips 103 are fixedly connected to the mounting plate 102; each fixing strip 103 has a sliding groove 10301; several sliding parts are slidably connected in each sliding groove 10301. Each sliding rod 105 is threaded with a first nut 106, a second nut 107, and a third nut 108 from back to front. Several guide rails 104 are slidably connected to the mounting plate 102. A slider 10401 is fixedly connected to both ends of each guide rail 104. Each slider 10401 is slidably connected to its corresponding sliding rod 105. Each slider 10401 is located between its corresponding second nut 107 and third nut 108. A fixing block 203 is fixedly connected to each sliding rod 105. A locking block 204 is rotatably connected to each fixing block 203. The locking block 204's rotation limit is perpendicular to the fixing block 203. Initially, each locking block 204 is inserted into its corresponding groove 10301. A heat dissipation assembly is connected to the heat dissipation box 101.

[0026] The heat dissipation assembly includes fins 201 and air boxes 202; several fins 201 are fixedly connected to the mounting plate 102, and each fin 201 is located inside the heat dissipation cavity 10101; two left-right symmetrical air boxes 202 are fixedly connected to the heat dissipation box 101.

[0027] In this embodiment, after the electrical components are mounted on the guide rail 104, the rear side of the electrical components will be in contact with the mounting plate 102. During the operation of the distribution box, the mounting plate 102 absorbs the heat of the electrical components and then conducts it to the fins 201 in the heat dissipation cavity 10101. At the same time, the air box 202 is activated. The left air box 202 draws cold air from the outside into the heat dissipation cavity 10101, and the right air box 202 draws hot air out of the heat dissipation cavity 10101, thereby forming a flowing airflow in the heat dissipation cavity 10101 to dissipate heat from the fins 201 and the mounting plate 102. The air box 202 is equipped with a temperature sensor, which can monitor the equipment temperature in real time during the heat dissipation process. When the equipment temperature is detected to be too high, the air box 202 automatically operates at the maximum airflow to enhance the suction and heat dissipation effect. When the temperature is within the normal range... When the bellows 202 adaptively reduces its operating power, it intelligently matches the working state under different operating conditions, reducing energy consumption and saving electricity. Moreover, the mounting plate 102 separates the box 2 from the heat dissipation box 101, so that external airflow cannot enter the box 2 during the heat dissipation process. This solves the problem that when the distribution box spontaneously combusts or even explodes, the heat dissipation slots of the existing distribution box allow the inside of the distribution box to be directly connected to the external environment. A large amount of oxygen in the outside air will continuously enter the distribution box through the heat dissipation slots, providing sufficient combustion conditions for spontaneous combustion and accelerating the combustion process. Furthermore, the heat dissipation slots cannot form an effective sealing protection, which not only causes the shock wave generated by the explosion to spread directly to the outside, causing casualties and equipment damage, but may also exacerbate the explosion power due to the rapid influx of outside air, further expanding the scope of the accident hazard.

[0028] Furthermore, by using the heat dissipation box 101 as the connecting carrier between the box 2 and the fixed frame 1, when the electrical components inside the box 2 explode, the mounting plate 102 and the heat dissipation cavity 10101 buffer the vibration aftershocks generated by the explosion, reduce the impact of the explosion on the fixed frame 1, and prevent the fixed frame 1 from collapsing after the explosion and causing harm to the surrounding personnel.

[0029] Furthermore, considering that different types of electrical components such as circuit breakers, contactors, frequency converters, and transformers need to be installed inside the enclosure 2, and given the differences in the dimensions of these components, if a traditional fixed guide rail 104 mounting structure is used, a large fitting gap needs to be reserved between the guide rail 104 and the mounting plate 102 to accommodate the installation space of different electrical components. However, this also results in some electrical components not fitting snugly against the mounting plate 102, causing the mounting plate 102 to be unable to effectively absorb the heat generated during component operation, significantly weakening the heat conduction and dissipation performance of the mounting plate 102. Therefore, when installing electrical components, the operator can loosen the first nut 106. The operator adjusts the height of the guide rail 104 by moving the corresponding sliding rod 105 up and down. Then, the operator installs electrical components of uniform specifications on the same guide rail 104 and adjusts their positions left and right as needed. Next, the operator loosens the second nut 107 and the third nut 108 to release the limiting constraints on the guide rail 104, and then pushes the guide rail 104 forward and backward to adjust its position until the electrical components on the guide rail 104 are completely flush with the surface of the mounting plate 102, without requiring additional... Drilling holes allows for free installation and adjustment of the guide rail 104 and electrical components, greatly improving the portability of the distribution box installation and adjustment. Adjusting the front and rear positions of the guide rail 104 ensures that the corresponding electrical components fit snugly against the mounting plate 102, thus solving the problem of traditional fixed guide rail 104 installation structures requiring a large fitting gap between the guide rail 104 and the mounting plate 102, which prevents some electrical components from fitting snugly against the mounting plate 102 and affects the heat dissipation effect of the mounting plate 102. In the initial state, each locking block 204 is inserted into the corresponding sliding groove 10301. When the operator loosens the first nut 106... The locking block 204 provides auxiliary support for the sliding rod 105, preventing it from sliding downwards. This avoids the sliding rod 105 from slipping to one side and losing its balance when the operator loosens the two first nuts 106 to adjust the sliding rod 105 and guide rail 4, thus preventing it from getting stuck in the slide groove 10301 and affecting subsequent adjustments. After the operator loosens the two first nuts 106, they only need to turn the locking block 204 downwards with both hands simultaneously to remove it from the slide groove 10301 and release its auxiliary support for the sliding rod 105, allowing for sliding adjustment of the sliding rod 105 and guide rail 4.

[0030] In a further preferred embodiment of the present invention, such as Figure 3 and Figure 7 As shown, it also includes a clamping block 109; a clamping block 109 is fixedly connected to the front side of each sliding rod 105.

[0031] In this embodiment, considering that the sliding rod 105 is only slidably connected to the groove 10301 of the fixed strip 103 at one end, its connection structure is cantilevered, and the stress point is relatively singular. When electrical components are installed on the guide rail 104, the weight of the electrical components will be entirely applied to the sliding rod 105, causing the front side of the sliding rod 105 to be subjected to continuous and large downward pressure. Under this downward pressure for a long time, the cantilevered sliding rod 105 is prone to bending deformation, and even irreversible plastic deformation. Therefore, when the operator closes the protective door 2001, the protective door 2001 will squeeze the pressing block 109, thereby... The clamping block 109 and the sliding rod 105 are pressed onto the fixing strip 103, so that both ends of the sliding rod 105 are subjected to force, which greatly improves the stability of the sliding rod 105, effectively relieves the downward pressure load on the front side of the sliding rod 105, and prevents the sliding rod 105 from bending and deforming due to long-term uneven force, thus greatly improving the service life of the equipment. During maintenance, after the operator opens the protective door 2001, the protective door 2001 releases the pressure on the clamping block 109. Then, the operator only needs to loosen the first nut 106 to move and adjust the sliding rod 105, which facilitates the operator to inspect and maintain the distribution box.

[0032] In a further preferred embodiment of the present invention, such as Figure 3 As shown, each fixing bar 103 has a scale line 10302 on its front side; each sliding rod 105 has an indicator line 10501 on its sliding part located in the sliding groove 10301, and the indicator line 10501 protrudes to be parallel to the surface of the scale line 10302. It can be seen from above after the first nut 106 is removed, which is convenient for viewing.

[0033] In this embodiment, when the operator adjusts the sliding rod 105 and the guide rail 4 up and down, they can observe the scale line 10302 and align the indicator line 10501 on the two sliding rods 105 with the scale line 10302 at the same height. This will move and adjust the two sliding rods 105 to the same height, improve the parallelism of the sliding rod 105 and the guide rail 4 after adjustment, and enable the operator to quickly position the rods. This avoids the need for repeated adjustments of adjacent guide rails 104 to adapt to the distance. After positioning, the operator only needs to hold the guide rail 104 with one hand and fasten the two locking blocks 204 with the other hand to provide auxiliary support for the sliding rod 105, making it easy for a single person to install independently.

[0034] In a further preferred embodiment of the present invention, the mounting plate 102 is an alumina ceramic plate.

[0035] In this embodiment, the thermal conductivity of alumina ceramic can reach 20-30 W / (m²). The volume resistivity (K) of alumina ceramic is much higher than that of ordinary plastics and insulating boards, enabling it to quickly absorb heat from the contact surfaces of electrical components and transfer the heat to the heat dissipation cavity 10101 through the thermal radiation and conduction of the ceramic substrate, thus rapidly dissipating heat from the electrical components; the volume resistivity of alumina ceramic is ≥10¹ 4 Ω m, breakdown voltage ≥15kV / mm, fully meets the insulation installation requirements of high voltage electrical components, and can prevent leakage and short circuit between electrical components and mounting plate 102; alumina ceramic has high hardness (Mohs hardness level 9) and compressive strength (≥350MP), and can withstand the explosive shock wave and high temperature impact generated when electrical components fail, and is not easy to break.

[0036] In a further preferred embodiment of the present invention, such as Figure 6 As shown, each fin 201 is inverted V-shaped; a drainage groove 10102 is provided on the lower side of the heat sink 101.

[0037] In this embodiment, considering that during heavy rain, rainwater and water vapor will inevitably enter the heat dissipation cavity 10101 through the air box 202, causing water accumulation or moisture buildup in the heat dissipation cavity 10101, and the continuous adhesion of water vapor to the surface of the fins 201 will cause oxidation and corrosion of the fins 201, weakening the thermal conductivity of the fins 201 and affecting its service life, the rainwater entering the heat dissipation cavity 10101 is discharged through the drainage channel 10102 on the lower side of the heat dissipation box 101. By designing the fins 201 as an inverted V-shaped structure (high in the middle and low at both ends), the slope guiding characteristics are utilized to allow the water vapor adhering to the surface of the fins 201 to slide quickly to both sides of the fins 201 under the action of gravity and fall to the bottom of the heat dissipation cavity 10101, and then be discharged from the drainage channel 10102. This effectively reduces the damage of moisture and water accumulation to the distribution box and the fins 201, ensures the long-term stable operation of the heat dissipation structure, and improves the outdoor environmental adaptability of the distribution box.

[0038] In a further preferred embodiment of the present invention, each fin 201 is made of pure copper.

[0039] In this embodiment, pure copper has an excellent thermal conductivity compared to ordinary metals (such as iron and aluminum), and its thermal conductivity is excellent. It can quickly absorb the heat conducted by the mounting plate 102, and the heat transfer speed is fast. It can diffuse the heat to the entire fin 201 in a short time, increasing the contact area between the heat and the airflow in the heat dissipation cavity 10101. In addition, pure copper has good heat resistance and structural stability, is not easy to deform, oxidize and has a long service life.

[0040] In a further preferred embodiment of the present invention, a temperature sensor is mounted on the mounting plate 102.

[0041] In this embodiment, when the temperature sensor detects that the surface temperature of the mounting plate 102 is ≥50℃, the power distribution box automatically controls the air box 202 to open to dissipate heat from the power distribution box. When the surface temperature of the mounting plate 102 is <50℃, the power distribution box automatically controls the air box 202 to close, thereby reducing the ineffective operating time of the air box 202 and intelligently regulating the overall energy consumption of the equipment.

[0042] Example 2: Based on Example 1, such as Figure 1 As shown, it also includes a reinforcing plate 205; the bottom of the fixing frame 1 is fixed with the reinforcing plate 205, and the reinforcing plate 205 and the fixing frame 1 form a stable triangular support structure.

[0043] In this embodiment, the triangular structure has the mechanical property of geometric invariance. The triangular support system formed by the reinforcing plate 205 and the fixing frame 1 can effectively distribute the load of the fixing frame 1 and improve the overall structural rigidity and load-bearing capacity of the fixing frame 1.

[0044] In a further preferred embodiment of the present invention, such as Figure 1 As shown, several warning signs 2002 are installed on the protective door 2001.

[0045] In this embodiment, the warning sign 2002 can clearly mark key warning information such as high voltage danger, explosion-proof level, prohibition of unauthorized opening, and operation by professional personnel in the distribution box. It plays a clear safety warning role for on-site workers and passers-by, effectively avoiding safety accidents such as electric shock and explosion caused by non-professionals' misoperation or touching of the distribution box, and improving the inherent safety level of equipment operation.

[0046] The present application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of the present application. Therefore, the content of this specification should not be construed as a limitation of the present application.

Claims

1. An intelligent control explosion-proof distribution box, comprising a fixing frame (1); the fixing frame (1) is connected with a box body (2); the box body (2) is provided with a protection door (2001); characterized in that, It also includes a heat dissipation box (101) connected to a fixed frame (1); a heat dissipation cavity (10101) is provided inside the heat dissipation box (101); a mounting plate (102) is fixedly connected to the heat dissipation box (101); the rear side of the mounting plate (102) passes through the heat dissipation box (101) and communicates with the heat dissipation cavity (10101); the front side of the mounting plate (102) passes through the box body (2) and is fixedly connected to the box body (2); each fixing bar (103) is provided with a sliding groove (10301); several sliding rods (105) are slidably connected in each sliding groove (10301); each sliding rod (105) is threaded with a first nut (106), a second nut (107) and a third nut (108) from back to front. 108); Several guide rails (104) are slidably connected on the mounting plate (102); each guide rail (104) has a slider (10401) fixed at both ends; each slider (10401) is slidably connected to the corresponding sliding rod (105); each slider (10401) is located between the corresponding second nut (107) and third nut (108); each sliding rod (105) has a fixed block (203) fixedly connected; each fixed block (203) has a rotatably connected locking block (204), the rotation limit of the locking block (204) is perpendicular to the fixed block (203); the heat dissipation box (101) is connected to a heat dissipation component for dissipating heat from the electrical components inside the box (2).

2. The intelligent explosion-proof distribution box according to claim 1, characterized in that, The heat dissipation assembly includes fins (201) and air boxes (202) connected to the mounting plate (102); each fin (201) is located inside the heat dissipation cavity (10101); two left-right symmetrical air boxes (202) are fixed to the heat dissipation box (101).

3. The intelligent explosion-proof distribution box according to claim 1, characterized in that, It also includes a clamping block (109) fixed to the end of the sliding rod (105) away from the slide groove (10301) and used to press against the protective door (2001).

4. The intelligent explosion-proof distribution box according to claim 3, characterized in that, Each fixed bar (103) has a scale line (10302) on its front side; each sliding rod (105) has an indicator line (10501) on its sliding part located in the slide groove (10301).

5. The intelligent explosion-proof distribution box according to claim 1, characterized in that, The mounting plate (102) is an alumina ceramic plate.

6. The intelligent explosion-proof distribution box according to claim 2, characterized in that, Each fin (201) is inverted V-shaped; a drainage groove (10102) is provided on the lower side of the heat sink (101).

7. The intelligent explosion-proof distribution box according to claim 6, characterized in that, Each fin (201) is made of pure copper.

8. The intelligent explosion-proof distribution box according to claim 5, characterized in that, A temperature sensor is mounted on the mounting plate (102).

9. A smart explosion-proof distribution box according to any one of claims 1-8, characterized in that, It also includes a reinforcing plate (205) fixed to the fixed frame (1), and the reinforcing plate (205) and the fixed frame (1) form a stable triangular support structure.

10. The intelligent explosion-proof distribution box according to claim 1, characterized in that, Several warning signs (2002) are installed on the protective door (2001).

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