Dust-free negative-pressure water-cooled power distribution cabinet

Abstract

The utility model relates to the technical field of power distribution cabinets, and discloses a dust-free negative-pressure water-cooled power distribution cabinet, which comprises a cabinet body and cabinet doors, the cabinet doors are mounted at two ends of the front side of the cabinet body, a plurality of mounting beams are uniformly mounted in the cabinet body and connected with the cabinet body through heat dissipation assemblies, a rubber strip is fixedly connected to the surface of the front side of the cabinet body, and the rubber strip is fixedly connected with the surface of the rear side of the cabinet body. An air exhaust assembly is installed on the rear side of the upper portion in the cabinet body. The dust-free negative-pressure water-cooling power distribution cabinet has the following advantages: through cooperation of the cabinet body, the cabinet door, the mounting beam, the rubber strip, the heat dissipation assembly and other structures, the vertical rods and the fan blades rotate, the rotating fan blades enable surrounding air to flow from bottom to top, part of the air in the cabinet body is discharged through the vertical pipes, negative pressure is formed in the cabinet body, and the dust-free negative-pressure water-cooling power distribution cabinet is convenient to clean. And the cabinet door is tightly attracted to the front side of the rubber strip by using external atmospheric pressure, so that the probability that external dust particles enter the cabinet body to be in contact with electrical elements can be greatly reduced, and long-term stable operation of the power distribution cabinet is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of power distribution cabinet, concretely is dustless formula negative pressure water cooling type power distribution cabinet. BACKGROUND

[0002] Power distribution cabinet (box) can be divided into power distribution cabinet (box), lighting distribution cabinet (box) and metering cabinet (box), is the last stage equipment of distribution system.

[0003] Power distribution cabinet is applicable to the occasion that load is more dispersed, and the circuit is less, and motor control center is used to the occasion that load is concentrated, and the circuit is more. Their main function is to distribute the electric energy of a circuit in the power distribution equipment of the upper stage to the nearby load, and this stage device needs to have the function of protecting, monitoring and controlling the load.

[0004] In order to guarantee that the electrical components in the power distribution cabinet normally run in the non-high temperature environment, the air supply fan is usually installed on the power distribution cabinet shell, and most of the heat is taken away by the air supply to the inside of the cabinet. This way can reduce the temperature around the electrical components in the power distribution cabinet, but in the air supply process, the dust impurities in the outside will also be brought into the power distribution cabinet. Dust particles adhere to the surface of the electrical components, and long-term accumulation can seriously affect the heat dissipation effect of the electrical components, and then affect the performance of the power distribution cabinet.

[0005] In order to improve this drawback, the designer will install the filter assembly at the air inlet end of the air supply fan. However, with the passage of time, dust particles will still accumulate on the surface of the filter assembly, affecting the air supply effect, and being not conducive to the long-term stable heat dissipation of the electrical components in the power distribution cabinet.

[0006] At present, although some power distribution cabinets with water cooling function have been disclosed, this kind of power distribution cabinet improves the stability of internal heat dissipation to a certain extent, but when carrying out water cooling operation, the negative pressure environment in the cabinet body cannot be created. This makes the force of the movable door adsorbing the sealing strip insufficient, and the cabinet body and the outside environment are still in communication. If the installation area of the power distribution cabinet cannot be cleaned frequently, the dust particles in the outside will still enter the power distribution cabinet. In the long run, it will have adverse effects on the electrical components in the power distribution cabinet. Therefore, it is necessary to provide a dustless negative pressure water cooling type power distribution cabinet. UTILITY MODEL CONTENTS

[0007] The utility model aims at providing a dustless negative pressure water cooling type power distribution cabinet to solve the problems in the above background technology.

[0008] In order to achieve the above object, the utility model provides the following technical scheme: Dustless formula negative pressure water cooling type power distribution cabinet, include: cabinet and cabinet door, the front side both ends of cabinet are installed with cabinet door, the inside of cabinet is installed with a plurality of mounting beam evenly, mounting beam is connected with cabinet through heat dissipation subassembly, the front surface of cabinet is fixedly connected with rubber strip, the inside upper rear side of cabinet is installed with suction assembly, the surface below of one end cabinet door is equipped with auxiliary assembly.

[0009] Preferably, the heat dissipation assembly comprises: a coiled pipe, the coiled pipe is located at the inside rear side of the cabinet, a plurality of heat conduction blocks are fixedly sleeved on the outer wall of the coiled pipe, the mounting beam is connected with the heat conduction block through bolt, a pair of elbow pipes are fixedly connected at the top end of the coiled pipe, the top end of the elbow pipe penetrates the cabinet, the penetration surface of the elbow pipe and the cabinet is fixedly connected, and a cold water circulator is fixedly connected at the top end of the elbow pipe.

[0010] Preferably, the outside of the cold water circulator is sleeved with a shell, and the shell is fixedly connected with the top end of the cabinet.

[0011] Preferably, the suction assembly comprises: a pair of U-shaped pipes, the U-shaped pipes are respectively located at the inside upper two sides of the cabinet, the U-shaped pipe is fixedly connected with the coiled pipe, a first electromagnetic valve is installed on the pipeline of the U-shaped pipe, the U-shaped pipe is of double-joint structure, a cavity block is fixedly connected between the U-shaped pipes, a horizontal cylinder is arranged in the cavity block, a plurality of blades are equidistantly fixedly connected on the outer wall of the horizontal cylinder, a horizontal rod is fixedly connected on the inner wall of the horizontal cylinder, a part of the horizontal rod penetrates the cavity block, the horizontal rod is rotatably connected with the cavity block through a sealing bearing, a vertical pipe is rotatably connected on the outer wall of the horizontal rod, a part of the vertical pipe penetrates the cabinet, the vertical pipe is fixedly connected with the cabinet, a first umbrella-shaped gear is arranged below the inside of the vertical pipe, the first umbrella-shaped gear is fixedly connected with the horizontal rod in a concentric manner, a second umbrella-shaped gear is meshingly connected at the top end of the first umbrella-shaped gear, a vertical rod is fixedly connected at the top end of the second umbrella-shaped gear, a plurality of fan blades are fixedly sleeved on the outer wall of the vertical rod from top to bottom, a sleeve is rotatably connected below the outer wall of the vertical rod, a pair of supporting rods are fixedly connected on the outer wall of the sleeve, the end of the supporting rod away from the sleeve is fixedly connected with the inner wall of the vertical pipe, a second electromagnetic valve is arranged in the direction away from the vertical pipe of the U-shaped pipe, and the second electromagnetic valve is installed on the pipeline of the coiled pipe.

[0012] Preferably, the upper and lower ends of the vertical pipe are both provided with filter screens.

[0013] Preferably, a negative pressure table is installed above the front surface of one end of the cabinet door.

[0014] Preferably, the auxiliary assembly comprises: a transparent box, the transparent box is fixedly connected below the surface of one end of the cabinet door, wiring diagram paper is placed in the inside of the transparent box, and a through slot is formed in the front surface top end of the transparent box.

[0015] Compared with the prior art, the dust-free negative pressure water-cooled power distribution cabinet has the following advantages:

[0016] Through the cooperative action of the cabinet body, the cabinet door, the mounting beam, the rubber strip and the heat dissipation assembly and the like, in use, the electrical elements required for the operation of the power distribution cabinet are first installed on the front side of the mounting beam in the cabinet body, the cabinet door is closed after the wiring of the electrical elements is completed, at this time, the cabinet door is tightly abutted against the rubber strip on the front surface of the cabinet body, when the power distribution cabinet is normally operated, the cold water circulator is started, so that the cold water circulates in the serpentine pipe, the heat generated by the operation of the electrical elements in the cabinet body is transmitted to the serpentine pipe through the mounting beam and the heat conducting block, the cold water circulating in the serpentine pipe carries away most of the heat, so that the electrical elements are stably operated in a non-high temperature environment, in this process, the second electromagnetic valve is closed and the first electromagnetic valve is opened, the cold water flows in the U-shaped pipe and impacts the blades, so that the plurality of blades rotate around the horizontal cylinder and the horizontal rod, the horizontal rod drives the first bevel gear to rotate, and then meshes with the second bevel gear to drive the vertical rod and the fan blades to rotate, the rotating fan blades make the surrounding air flow from bottom to top, part of the air in the cabinet body is discharged through the vertical pipe, so that a negative pressure is formed in the cabinet body, by using the atmospheric pressure, the cabinet door is tightly sucked in front of the rubber strip, the probability of the dust particles in the outside environment entering the cabinet body and contacting the electrical elements can be greatly reduced, and the long-term stable operation of the power distribution cabinet is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structural schematic view of the utility model;

[0018] Figure 2 It is Figure 1 an enlarged view of A in the middle;

[0019] Figure 3 It is Figure 2 an enlarged view of B in the middle;

[0020] Figure 4 It is Figure 1 an enlarged view of C in the middle;

[0021] Figure 5 It is Figure 2 an enlarged view of D in the middle.

[0022] In the drawing: 1, cabinet body, 2, cabinet door, 3, mounting beam, 4, rubber strip, 5, serpentine pipe, 6, heat conducting block, 7, elbow pipe, 8, cold water circulator, 9, U-shaped pipe, 10, first electromagnetic valve, 11, cavity block, 12, horizontal cylinder, 13, blade, 14, horizontal rod, 15, vertical pipe, 16, first bevel gear, 17, second bevel gear, 18, vertical rod, 19, fan blade, 20, sleeve, 21, support rod, 22, second electromagnetic valve, 23, filter screen, 24, shell, 25, negative pressure gauge, 26, transparent box, 27, wiring diagram paper, 28, through groove. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the scope of protection of the utility model.

[0024] Please refer to Figures 1-5 The utility model provides technical scheme: dustless formula negative pressure water cooling type power distribution cabinet, include: cabinet 1 and cabinet door 2, the front side both ends of cabinet 1 are installed with cabinet door 2, the inside of cabinet 1 is evenly installed with a plurality of mounting beam 3, and mounting beam 3 is connected with cabinet 1 through heat dissipation subassembly, and the front side surface of cabinet 1 is fixedly connected with rubber strip 4, and the inside upper rear side of cabinet 1 is installed with suction assembly, and the surface of one end cabinet door 2 is equipped with auxiliary assembly below.

[0025] In the specific implementation process, it is worth pointing out particularly that cabinet 1 and cabinet door 2 are made of high-strength steel material, have good structural stability and deformation resistance, can withstand certain external impact and environmental changes, mounting beam 3 is made of rust-proof metal material, and the surface is smooth, not only facilitates the installation and fixation of electrical components, but also can effectively prevent electrical connection problems caused by rust, rubber strip 4 selects high-quality rubber material, has excellent elasticity and sealing property, is not easy to age and deform in long-time use process, and ensures that the sealing effect between cabinet door 2 and cabinet 1 is persistent and stable.

[0026] Further, the heat dissipation assembly includes: a serpentine pipe 5, the serpentine pipe 5 is located at the inside rear side of the cabinet 1, a plurality of heat-conducting blocks 6 are fixedly sleeved on the outer wall of the serpentine pipe 5, the mounting beam 3 is connected with the heat-conducting blocks 6 through bolts, a pair of elbow pipes 7 are fixedly connected at the top end of the serpentine pipe 5, the top end of the elbow pipe 7 penetrates the cabinet 1, the elbow pipe 7 is fixedly connected with the penetration surface of the cabinet 1, and a cold water circulator 8 is fixedly connected at the top end of the elbow pipe 7.

[0027] In the specific implementation process, it is particularly worth pointing out that the coiled tube 5 is made of copper material, which has good thermal conductivity and can quickly transfer the heat generated by the electrical components to the circulating cold water. The heat-conducting block 6 is fully attached to the coiled tube 5 and the mounting beam 3, and through efficient heat conduction, it ensures that the heat can be timely transferred to the coiled tube 5. The heat-conducting block 6 is also made of copper, which has good thermal conductivity. The elbow pipe 7 is in communication with the coiled tube 5. The cold water circulator 8, also known as a cold water machine or an ice water machine, is a wind-cooled water circulating device without a cold water tower. The device replaces the traditional pool cooling through a compressor refrigeration system. The built-in thermal insulation water tank and water pump can directly dissipate heat, and has the characteristics of saving water sources, improving equipment efficiency, preventing corrosion and preventing blockage. That is, the cold water circulator 8 is a product of the prior art, which can realize the circulation of cold water in the coiled tube 5.

[0028] Further, the outer side of the cold water circulator 8 is sleeved with a shell 24, and the shell 24 is fixedly connected with the top end of the cabinet body 1.

[0029] In the specific implementation process, it is particularly worth pointing out that the shell 24 can protect the cold water circulator 8, and the front side of the shell 24 is provided with a rotatable shell door to facilitate subsequent maintenance of the cold water circulator 8 inside the shell 24. In addition, a plurality of heat dissipation openings are formed on the surface of the shell door.

[0030] Further, the air extraction assembly comprises: a pair of U-shaped pipes 9, which are respectively located on both sides of the upper part of the cabinet body 1. The U-shaped pipes 9 are fixedly connected with the coiled tube 5. A first electromagnetic valve 10 is installed on the pipeline of the U-shaped pipe 9. The U-shaped pipe 9 has a double-joint structure. A cavity block 11 is fixedly connected between the double-joint U-shaped pipes 9. A horizontal cylinder 12 is arranged in the cavity block 11. A plurality of blades 13 are equidistantly fixedly connected to the outer wall of the horizontal cylinder 12. A horizontal rod 14 is fixedly connected to the inner wall of the horizontal cylinder 12. A part of the horizontal rod 14 penetrates the cavity block 11. The horizontal rod 14 is rotatably connected with the cavity block 11 through a sealing bearing. A vertical pipe 15 is rotatably connected to the outer wall of the horizontal rod 14. A part of the vertical pipe 15 penetrates the cabinet body 1. The vertical pipe 15 is fixedly connected with the cabinet body 1. A first umbrella-shaped gear 16 is arranged in the lower part of the vertical pipe 15. The first umbrella-shaped gear 16 is concentrically fixedly connected with the horizontal rod 14. A second umbrella-shaped gear 17 is meshingly connected to the top end of the first umbrella-shaped gear 16. A vertical rod 18 is fixedly connected to the top end of the second umbrella-shaped gear 17. A plurality of fan blades 19 are sequentially fixedly sleeved to the outer wall of the vertical rod 18 from top to bottom. A sleeve 20 is rotatably connected to the lower part of the outer wall of the vertical rod 18. A pair of supporting rods 21 are fixedly connected to the outer wall of the sleeve 20. The ends of the supporting rods 21 away from the sleeve 20 are fixedly connected with the inner wall of the vertical pipe 15. A second electromagnetic valve 22 is arranged in the direction away from the vertical pipe 15 of the U-shaped pipe 9. The second electromagnetic valve 22 is installed on the pipeline of the coiled tube 5.

[0031] In the implementation process, it is worth pointing out that the U-shaped tube 9 is made of stainless steel, which has good corrosion resistance and strength. The U-shaped tube 9 is in communication with the inside of the serpentine tube 5. The first electromagnetic valve 10 is a normally closed electromagnetic valve, and the second electromagnetic valve 22 is a normally open electromagnetic valve. The design of the cavity block 11 provides a stable space for the rotation of the blade 13, ensuring that the cold water impacting the blade 13 can generate effective power. The first umbrella gear 16 and the second umbrella gear 17 have high meshing accuracy and stable transmission, which can ensure the stable rotation of the fan blade 19. The vertical rod 18 is made of lightweight high-strength material, which reduces the weight while ensuring strength, which is conducive to the rapid rotation of the fan blade 19. The combination of the sleeve 20 and the support rod 21 provides stable support for the vertical rod 18. The vertical rod 18 is connected to the sleeve 20 through a sealed bearing, which ensures that it will not deviate during rotation.

[0032] Further, the upper and lower ends of the vertical pipe 15 are both provided with a filter screen 23.

[0033] In the implementation process, it is worth pointing out that the filter screen 23 is woven from fine metal wires, which can effectively filter dust and debris in the air and prevent them from entering the inside of the cabinet 1. At the same time, the filter screen 23 also has good air permeability and will not affect the normal flow of air, ensuring that the air suction assembly can work smoothly.

[0034] Further, the front surface of the one-end cabinet door 2 is provided with a negative pressure gauge 25 above.

[0035] In the implementation process, it is worth pointing out that the monitoring port of the negative pressure gauge 25 is in communication with the inside of the cabinet 1, which can accurately display the negative pressure value inside the cabinet 1 in real time. The operator can observe the surface of the negative pressure gauge 25 to timely understand the sealing condition and negative pressure state inside the cabinet 1, so as to adjust and maintain according to the actual situation.

[0036] Further, the auxiliary assembly includes a transparent box 26, which is fixedly connected to the surface below the one-end cabinet door 2. The transparent box 26 has a wiring diagram paper 27 placed inside, and a through slot 28 is formed in the front surface of the transparent box 26.

[0037] In the implementation process, it is worth pointing out that the transparent box 26 is made of high-strength transparent plastic, which has good transparency and durability, and the operator can check the internal wiring diagram paper 27 at any time. The wiring diagram paper 27 details the connection method and line direction of each electrical element in the power distribution cabinet, providing an important reference for the installation, debugging and maintenance of the operator. The design of the through slot 28 facilitates the operator to take out or put in the wiring diagram paper 27, which is convenient and fast.

[0038] Working principle:

[0039] Electrical installation and foundation sealing:

[0040] When using the dust-free negative pressure water-cooled power distribution cabinet, the user needs to install various electrical components required for the operation of the power distribution cabinet in the front side of the mounting beam 3 in the cabinet body 1. After completing the installation, the electrical component wiring operation is performed. After the wiring work is completed, the cabinet door 2 is closed. At this time, the cabinet door 2 will be in close contact with the rubber strip 4 arranged on the front surface of the cabinet body 1 and will be tightly closed. The rubber strip 4 relies on its flexibility and sealing to form an initial sealing barrier between the cabinet door 2 and the cabinet body 1, effectively preventing external dust and debris from entering the interior of the cabinet body 1, and providing a foundation for the stable operation of the subsequent power distribution cabinet and the protection of internal components.

[0041] Water-cooled heat dissipation and negative pressure generation:

[0042] After the power distribution cabinet enters the normal operation state, the user starts the cold water circulator 8 to promote the circulation of cold water inside the serpentine pipe 5. The electrical components inside the cabinet body 1 will generate a certain amount of heat during operation. These heat will be efficiently transferred to the serpentine pipe 5 through the mounting beam 3 and the heat-conducting block 6. The cold water inside the serpentine pipe 5 continuously absorbs heat during circulation, taking away most of the heat, thereby ensuring that the electrical components inside the power distribution cabinet always operate in a non-high temperature environment, avoiding the performance degradation or damage of the components due to high temperature. At the same time, the user operates the valve, closes the second electromagnetic valve 22 (normally open electromagnetic valve) and opens the first electromagnetic valve 10 (normally closed electromagnetic valve), so that the cold water is diverted to flow inside the U-shaped pipe 9. When the cold water flows inside the U-shaped pipe 9, it will generate an impact force on the blades 13, pushing multiple blades 13 to rotate around the horizontal cylinder 12 and horizontal rod 14 as the center. In this rotation process, the first umbrella-shaped gear 16 rotates with the horizontal rod 14 and drives the second umbrella-shaped gear 17 to rotate through meshing transmission, thereby causing the vertical rod 18 and the fan blade 19 to start rotating. The rotating fan blade 19 will cause the air around it to flow from bottom to top, discharging part of the air in the cabinet body 1 to the outside of the cabinet body 1 through the vertical pipe 15, and finally making the interior of the cabinet body 1 in a negative pressure state.

[0043] Cabinet door suction and long-term dust prevention:

[0044] When the cabinet body forms a negative pressure state, the principle of external atmospheric pressure is ingeniously utilized, the strong external atmospheric pressure will tightly attract the cabinet door 2 to the front side of the rubber strip 4, further enhancing the sealing between the cabinet body 1 and the cabinet door 2, after completing this series of operations, the user restores the second electromagnetic valve 22 to the normally open state, the first electromagnetic valve 10 restores the normally closed state, at this time, the cabinet body 1 inside keeps a relatively sealed negative pressure environment, this special environment can greatly reduce the probability of dust particles in the outside environment entering the cabinet body 1 inside and contacting the electrical elements, the reduction of dust particles can effectively avoid the problems of electrical element short circuit, poor heat dissipation and the like caused by dust accumulation, so as to protect the power distribution cabinet to run stably for a long time, greatly prolong the service life of the power distribution cabinet, improve the reliability and safety of its operation.

[0045] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A dust-free negative pressure water-cooled power distribution cabinet, comprising: a cabinet body (1) and a cabinet door (2), the front side of the cabinet body (1) is provided with a cabinet door (2) at both ends, characterized in that: The inside of the cabinet body (1) is uniformly provided with a plurality of mounting beams (3), the mounting beams (3) are connected with the cabinet body (1) through a heat dissipation assembly, the front surface of the cabinet body (1) is fixedly connected with a rubber strip (4), the upper rear side of the inside of the cabinet body (1) is provided with an air extraction assembly, and the lower surface of one end of the cabinet door (2) is provided with an auxiliary assembly.

2. The dustless negative pressure water-cooled power distribution cabinet according to claim 1, characterized in that: The heat dissipation assembly comprises: a coiled pipe (5), the coiled pipe (5) is located at the inside rear side of the cabinet body (1), a plurality of heat conduction blocks (6) are fixedly sleeved on the outer wall of the coiled pipe (5), the mounting beams (3) are connected with the heat conduction blocks (6) through bolts, one end of the coiled pipe (5) is fixedly connected with a pair of elbow pipes (7), the top end of the elbow pipe (7) penetrates the cabinet body (1), the elbow pipe (7) is fixedly connected with the penetration surface of the cabinet body (1), and the top end of the elbow pipe (7) is fixedly connected with a cold water circulator (8).

3. The dustless negative pressure water-cooled power distribution cabinet according to claim 2, characterized in that: The outside of the cold water circulator (8) is sleeved with a shell (24), and the shell (24) is fixedly connected with the top end of the cabinet body (1).

4. The dustless negative pressure water-cooled power distribution cabinet according to claim 2, characterized in that: The air extraction assembly comprises: a pair of U-shaped pipes (9), the pair of U-shaped pipes (9) are respectively located at the upper sides of the inside of the cabinet body (1), the U-shaped pipes (9) are fixedly connected with the coiled pipe (5), a first electromagnetic valve (10) is installed on the pipeline of the U-shaped pipe (9), the U-shaped pipe (9) has a double-joint structure, a cavity block (11) is fixedly connected between the double-joint U-shaped pipes (9), a horizontal cylinder (12) is arranged in the cavity block (11), a plurality of blades (13) are equidistantly fixedly connected on the outer wall of the horizontal cylinder (12), a horizontal rod (14) is fixedly connected on the inner wall of the horizontal cylinder (12), a part of the horizontal rod (14) penetrates the cavity block (11), the horizontal rod (14) is rotatably connected with the cavity block (11) through a sealing bearing, a vertical pipe (15) is rotatably connected on the outer wall of the horizontal rod (14), a part of the vertical pipe (15) penetrates the cabinet body (1), the vertical pipe (15) is fixedly connected with the cabinet body (1), a first umbrella-shaped gear (16) is arranged at the lower portion of the inside of the vertical pipe (15), the first umbrella-shaped gear (16) is fixedly connected with the horizontal rod (14) in a concentric manner, a second umbrella-shaped gear (17) is meshingly connected with the top end of the first umbrella-shaped gear (16), a vertical rod (18) is fixedly connected with the top end of the second umbrella-shaped gear (17), a plurality of fan blades (19) are fixedly sleeved on the outer wall of the vertical rod (18) from top to bottom, a sleeve (20) is rotatably connected on the lower portion of the outer wall of the vertical rod (18), a pair of supporting rods (21) are fixedly connected on the outer wall of the sleeve (20), the end portions of the supporting rods (21) away from the sleeve (20) are fixedly connected with the inner wall of the vertical pipe (15), a second electromagnetic valve (22) is arranged on the pipeline of the U-shaped pipe (9) away from the vertical pipe (15).

5. The dustless negative pressure water-cooled power distribution cabinet according to claim 4, characterized in that: The upper and lower ends of the vertical pipe (15) are provided with filter screens (23).

6. The dustless negative pressure water-cooled power distribution cabinet according to claim 1, characterized in that: The front surface of one end of the cabinet door (2) is provided with a negative pressure table (25).

7. The dustless negative pressure water-cooled power distribution cabinet according to claim 1, characterized in that: The auxiliary assembly comprises a transparent box (26) which is fixed under the surface of one end cabinet door (2), the inside of the transparent box (26) is put into wiring drawing paper (27), and a through slot (28) is formed in the top end of the front surface of the transparent box (26).

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