Combined rainproof power distribution cabinet and use method

Abstract

The present invention relates to the technical field of power distribution cabinets, and in particular to a combined rainproof power distribution cabinet and a method of using the same, comprising a power distribution cabinet shell for installing electronic components and wiring harnesses, the power distribution cabinet shell comprising a bottom plate, a sealed shell is welded and fixed to the upper end of the bottom plate, a wind-cooling plate is welded and fixed to the upper end of the sealed shell, the wind-cooling plate comprises an upper cover plate, threaded holes are provided at the four corners of the upper end of the upper cover plate, and a center hole is provided in the middle of the upper end of the upper cover plate; a pre-buried water tank is installed at the bottom end of the power distribution cabinet shell, and a heat exchange mechanism is installed on the inner side of the upper end of the power distribution cabinet shell. In the present invention, heat dissipation can be provided for the outside of the power distribution cabinet in summer, thereby improving the heat dissipation effect of the power distribution cabinet; in combination with a built-in heat dissipation device, the heat dissipation effect of the power distribution cabinet in summer can be met, thereby ensuring the normal operation of the power distribution cabinet; at the same time, by utilizing the high temperature of the fixed shell, in combination with the upper conical block and the lower conical block arranged inside, a large amount of water vapor is formed inside the fixed shell, and heat is absorbed by evaporation of water vapor, thereby further improving the heat dissipation effect.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution cabinets, and in particular to a combined rainproof power distribution cabinet and a use method thereof. Background Art

[0002] Combined rainproof distribution cabinet is a kind of power distribution equipment designed for outdoor environment, especially in places susceptible to rain. This kind of distribution cabinet combines rainproof function to protect the internal electrical components from moisture and water, thus ensuring the stable operation and extending the service life of the electrical system.

[0003] The 750 kV distribution cabinet is used in high-voltage power transmission networks, especially in substations, to receive, distribute and control high-voltage power to supply industrial, commercial or residential electricity.

[0004] The existing combined rainproof distribution cabinets installed outdoors need built-in heat dissipation equipment for heat dissipation due to their own sealing requirements. However, when exposed to the sun in summer, the internal heat dissipation effect will be greatly affected, and overheating problems will easily occur, causing the distribution cabinet to malfunction. Most of them currently on the market. Therefore, in response to the above problems, a combined rainproof distribution cabinet and a method of use are proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a combined rainproof distribution cabinet and a method of use, so as to solve the problem that the combined rainproof distribution cabinet installed outdoors needs a built-in heat dissipation device for heat dissipation due to its own sealing requirements, but when exposed to the sun in summer, the internal heat dissipation effect will be greatly affected, and overheating problems will easily occur, causing malfunctions of the distribution cabinet.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A combined rainproof power distribution cabinet and a method of use, comprising a power distribution cabinet shell for installing electronic components and wiring harnesses, the power distribution cabinet shell comprising a bottom plate, a sealed shell is welded and fixed to the upper end of the bottom plate, an air-cooling plate is welded and fixed to the upper end of the sealed shell, the air-cooling plate comprises an upper cover plate, threaded holes are provided at four corners of the upper end of the upper cover plate, and a center hole is provided in the middle of the upper end of the upper cover plate; a pre-buried water tank is installed at the bottom end of the power distribution cabinet shell, a heat exchange mechanism is installed on the inner side of the upper end of the power distribution cabinet shell, a circulation mechanism is passed between the pre-buried water tank and the heat exchange mechanism, and a water collecting mechanism is installed on one side of the pre-buried water tank; the circulation mechanism comprises an air duct, a micro waterproof fan is installed in the middle of the air duct, and the outer side of the middle of the air duct is fixedly connected to the sealed shell through a fixed bracket, the heat exchange mechanism comprises a fixed shell, an upper conical block is fixedly connected to the inner side of the top end of the fixed shell, an aluminum plate is installed on the inner side of the bottom of the fixed shell, and water-blocking plates are welded and fixed on both sides of the upper end of the aluminum plate, The aluminum plate is provided with connection holes on both sides, the upper end of the aluminum plate is fixedly connected to the lower conical block, the inner side of the bottom end of the aluminum plate is provided with a heat dissipation groove, the water collection mechanism includes a bend pipe, the bottom end of the bend pipe is fixedly connected to a connecting flange, the top end of the bend pipe is fixedly connected to a conical cover shell, the inner side of the upper end of the conical cover shell is fixedly connected to a filter plate, the bottom end of the conical cover shell is provided with inclined holes on both sides, the inner side of the top end of the bend pipe is fixedly connected to a ring plate, the lower end of the ring plate is installed with a circular plate, the bottom end of the circular plate is fixedly connected to A vertical rod is connected, a through hole is opened on the inner side of the edge of the circular plate, a buoyancy ball is fixedly connected to the bottom end of the vertical rod, the elbow is L-shaped, the bottom end of the elbow is fixedly connected to the embedded water tank through a connecting flange, the bottom of the elbow is connected to the embedded water tank, the top of the elbow is connected to the conical cover shell, the circular plate is slidably connected to the inner wall of the elbow, the through holes opened on the inner side of the circular plate are distributed in a ring shape on the inner side of the edge of the circular plate, the through holes are opened at the lower end of the ring plate, and the angle formed by the bottom end of the circular plate and the vertical rod is 90°.

[0008] As a further optimization of the present invention, the distribution cabinet casings are fixed by connecting plates and bolts, embedded water tanks are installed at the bottom ends of the distribution cabinet casings, square grooves are provided on the outsides of the embedded water tanks, one side of the embedded water tanks at both ends is fixedly connected with a water collection mechanism, the middle embedded water tank is connected to the other side of the embedded water tanks at both ends by water pipes, and the vertical section of the connecting plate is U-shaped.

[0009] As a further optimization of the present invention, the front end of the sealing shell is rotatably connected to a door panel, the cross-section of the sealing shell is U-shaped, and the threaded holes at the four corners of the upper end of the air-cooling plate are spirally connected to bolts.

[0010] As a further optimization of the present invention, there are multiple circulation mechanisms, which are installed on both sides of the distribution cabinet casing and are parallel to each other. The upper end of the air duct is fixedly connected to the aluminum plate through a connecting hole, and the bottom end of the air duct is connected to the embedded water tank.

[0011] As a further optimization of the present invention, the upper conical block and the lower conical block are both truncated cone-shaped, and a plurality of the upper conical blocks and the lower conical blocks are provided, and the upper conical block and the lower conical block are installed between the water blocking plates, and two water blocking plates are provided at the upper end of any of the aluminum plates, and the top end of the water blocking plate is in close contact with the inner wall of the fixed shell, and the water blocking plates are parallel to each other.

[0012] As a further optimization of the present invention, there are a number of connection holes opened on the inner side of the aluminum plate, the connection holes are distributed on the side of the water blocking plate away from the center point of the fixed shell, and the connection holes correspond one to one with the air ducts.

[0013] As further optimized contents of the present invention, among them: S1: Dimension measurement, pre-installation: measure the dimensions of the installation location, then dig a pit at the measured location, the pit depth is required to be less than 1.5m, then bury the pre-buried water tank at the bottom of the pit, after the burial is completed, pour a concrete platform at the upper end of the buried position of the pre-buried water tank, then install the power distribution cabinet shell on the upper end of the concrete platform to complete the pre-installation, during the pre-installation process, the circulation mechanism synchronously completes the connection with the heat exchange mechanism;

[0014] S2: After the installation is completed, the electronic components are installed and powered on: the electronic components inside the power distribution cabinet and the wires connected to the outside are installed inside the power distribution cabinet, and the installed electronic components and wires are measured. At the same time, the shells of multiple power distribution cabinets placed side by side are connected and fixed by connecting plates and bolts. After the fixing is completed, power is turned on for testing;

[0015] S3: Inspection and commissioning: After the power-on test is completed, the staff will energize the micro waterproof motor. During the power-on process, the micro waterproof motor controls the air at the top of the embedded water tank and the air inside the fixed shell to circulate. After a period of power-on, the air temperature near the fixed shell is compared with the outside temperature. Then, the installation position and installation sealing degree of the circulation mechanism, heat exchange mechanism and water collection mechanism are inspected. After the installation is completed, the machine is put into use.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. In the present invention, the heat exchange mechanism, circulation mechanism and embedded water tank can provide heat dissipation for the outside of the power distribution cabinet in summer, further improving the heat dissipation effect of the power distribution cabinet. With the built-in heat dissipation device, the heat dissipation effect of the power distribution cabinet in summer can be met to ensure the normal operation of the power distribution cabinet. The heat exchange mechanism mainly exchanges heat with the underground temperature to achieve heat dissipation, which is more energy-saving. At the same time, the high temperature of the fixed shell is used, and the upper conical block and the lower conical block are provided inside to form a large amount of water vapor inside, and the water vapor is used to absorb heat by evaporation, further improving the heat dissipation effect.

[0018] 2. In the present invention, the circulation mechanism, the power distribution cabinet housing, the heat exchange mechanism and the water collection mechanism are modularly designed, so that the external heat dissipation mechanism can be quickly assembled and disassembled, and is convenient for transportation and on-site installation, and is convenient for later maintenance;

[0019] 3. In the present invention, the water collection mechanism is set up to collect and filter rainwater on rainy days, reduce the direct impact of rainwater on the distribution cabinet, and extend the service life of the equipment. At the same time, the design of the buoyancy ball and the inclined hole prevents the accumulation of excessive rainwater, ensuring the safety of the distribution cabinet in the rainy season. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 For the present invention Figure 1 Schematic diagram of the structure at A in the middle;

[0022] Figure 3 This is a schematic diagram of the structure of the power distribution cabinet housing of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the air-cooling plate of the present invention;

[0024] Figure 5 It is a schematic diagram of the heat exchange mechanism structure of the present invention;

[0025] Figure 6 For the present invention Figure 5 Schematic diagram of the structure at D in the middle;

[0026] Figure 7 This is a schematic diagram of the aluminum plate installation position structure of the present invention;

[0027] Figure 8 It is a schematic diagram of the water collection mechanism structure of the present invention;

[0028] Fig. 9 For the present invention Figure 8 Schematic diagram of the structure at B in the middle;

[0029] Fig.10 For the present invention Figure 8Schematic diagram at point C in the middle.

[0030] In the figure: 1, power distribution cabinet housing; 11, bottom plate; 12, air cooling plate; 121, upper cover plate; 122, threaded hole; 123, center hole; 13, sealing shell;

[0031] 2. Door panel; 3. Connecting plate; 4. Bolts; 5. Pre-buried water tank;

[0032] 6. Circulation mechanism; 61. Air duct; 62. Fixed bracket; 63. Mini waterproof fan;

[0033] 7. Square groove;

[0034] 8. heat exchange mechanism; 81. fixed shell; 82. aluminum plate; 83. upper conical block; 84. lower conical block; 85. connection hole; 86. water blocking plate; 87. heat dissipation slot;

[0035] 9. Water collecting mechanism; 91. Bend pipe; 92. Connecting flange; 93. Conical cover; 94. Filter plate; 95. Vertical rod; 96. Oblique hole; 97. Round plate; 98. Through hole; 99. Ring plate; 910. Buoyancy ball. DETAILED DESCRIPTION

[0036] See also Figure 1-10 , the present invention provides a technical solution:

[0037] A combined rainproof power distribution cabinet and a method of use, comprising a power distribution cabinet housing 1 for installing electronic components and wiring harnesses, the power distribution cabinet housing 1 comprising a bottom plate 11, a sealed housing 13 is welded and fixed to the upper end of the bottom plate 11, an air cooling plate 12 is welded and fixed to the upper end of the sealed housing 13, the air cooling plate 12 comprises an upper cover plate 121, threaded holes 122 are provided at the four corners of the upper end of the upper cover plate 121, and a center hole 123 is provided in the middle of the upper end of the upper cover plate 121; a pre-buried water tank 5 is installed at the bottom end of the power distribution cabinet housing 1, a heat exchange mechanism 8 is installed on the inner side of the upper end of the power distribution cabinet housing 1, and the pre-buried water tank 5 and the heat exchange mechanism 8 are connected. The circulation mechanism 6 passes through the space between the two sides, and a water collecting mechanism 9 is installed on one side of the embedded water tank 5; the circulation mechanism 6 includes an air duct 61, a micro waterproof fan 63 is installed in the middle of the air duct 61, and the outer side of the middle of the air duct 61 is fixedly connected to the sealed shell 13 through a fixed bracket 62, and the heat exchange mechanism 8 includes a fixed shell 81, an upper conical block 83 is fixedly connected to the inner side of the top of the fixed shell 81, and an aluminum plate 82 is installed on the inner side of the bottom of the fixed shell 81, and water blocking plates 86 are welded and fixed on both sides of the upper end of the aluminum plate 82, and connecting holes 85 are opened on both sides of the aluminum plate 82, and the upper end of the aluminum plate 82 is fixedly connected to the lower conical block 84, and the aluminum A heat dissipation groove 87 is provided on the inner side of the bottom end of the plate 82, and the water collecting mechanism 9 includes a bend pipe 91, a connecting flange 92 is fixedly connected to the bottom end of the bend pipe 91, a conical cover 93 is fixedly connected to the top end of the bend pipe 91, a filter plate 94 is fixedly connected to the inner side of the upper end of the conical cover 93, and oblique holes 96 are provided on both sides of the bottom end of the conical cover 93, a ring plate 99 is fixedly connected to the inner side of the top end of the bend pipe 91, a circular plate 97 is installed at the lower end of the ring plate 99, a vertical rod 95 is fixedly connected to the bottom end of the circular plate 97, a through hole 98 is provided on the inner side of the edge of the circular plate 97, and a buoyancy ball 910 is fixedly connected to the bottom end of the vertical rod 95. The bend pipe 91 is L-shaped. The bottom end of the curved pipe 91 is fixedly connected to the embedded water tank 5 through the connecting flange 92, the bottom of the curved pipe 91 is connected to the embedded water tank 5, the top of the curved pipe 91 is connected to the conical cover 93, the circular plate 97 is slidably connected to the inner wall of the curved pipe 91, the through holes 98 opened on the inner side of the circular plate 97 are distributed in an annular shape on the inner side of the edge of the circular plate 97, the through holes 98 are opened at the lower end of the ring plate 99, and the angle formed by the bottom end of the circular plate 97 and the vertical rod 95 is 90°. The design of the water collection mechanism 9 can collect and filter rainwater on rainy days, reduce the direct impact of rainwater on the distribution cabinet, extend the service life of the equipment, and collect and utilize rainwater at the same time;

[0038] As a further implementation of this scheme, the power distribution cabinet housing 1 is fixed by a connecting plate 3 and a bolt 4, and a pre-buried water tank 5 is installed at the bottom of the power distribution cabinet housing 1. A square groove 7 is provided on the outside of the pre-buried water tank 5. One side of the pre-buried water tanks 5 at both ends is fixedly connected with a water collecting mechanism 9, and the middle pre-buried water tank 5 is connected to the other side of the pre-buried water tanks 5 at both ends through a water pipe. The vertical section of the connecting plate 3 is U-shaped, and the front end of the sealing shell 13 is rotatably connected with a door panel 2. The cross section of the sealing shell 13 is U-shaped, and the threaded holes 122 provided at the four corners of the upper end of the air-cooling plate 12 are spirally connected with the bolts 4. The opening of the square groove 7 can increase the contact area between the pre-buried water tank 5 and the ground, and better realize heat exchange. The power distribution cabinet housing 1 can stably install and seal the electronic components;

[0039] As a further implementation of this solution, a plurality of circulation mechanisms 6 are provided, and the circulation mechanisms 6 are installed on both sides of the power distribution cabinet housing 1, and the circulation mechanisms 6 are parallel to each other. The upper end of the air duct 61 is fixedly connected to the aluminum plate 82 through the connection hole 85, and the bottom end of the air duct 61 is connected to the embedded water tank 5, and the heat dissipation structure and modular design make the installation and maintenance of the power distribution cabinet easier. The pre-installation of the circulation mechanism and the heat exchange mechanism ensures the high efficiency of the on-site installation.

[0040] As a further implementation of the present scheme, the upper conical block 83 and the lower conical block 84 are both truncated cone-shaped, and a plurality of the upper conical blocks 83 and the lower conical blocks 84 are provided, and the upper conical blocks 83 and the lower conical blocks 84 are installed between the water blocking plates 86. Two water blocking plates 86 are provided on the upper end of any aluminum plate 82, and the top of the water blocking plate 86 is in close contact with the inner wall of the fixed shell 81, and the water blocking plates 86 are parallel to each other. A plurality of connecting holes 85 are provided on the inner side of the aluminum plate 82, and the connecting holes 85 are distributed on the side of the water blocking plate 86 away from the center point of the fixed shell 81. The connecting holes 85 correspond one to one with the air duct 61. The combination of the air cooling plate and the heat exchange mechanism improves the heat dissipation efficiency and prevents overheating of electronic components.

[0041] S1: Dimension measurement and pre-installation: Measure the dimensions of the installation location, then dig a pit at the measured location, the pit depth is required to be less than 1.5m, and then bury the pre-buried water tank 5 at the bottom of the pit. After the burial is completed, pour a concrete platform at the upper end of the buried position of the pre-buried water tank 5, and then install the distribution cabinet housing 1 on the upper end of the concrete platform to complete the pre-installation. During the pre-installation process, the circulation mechanism 6 is synchronously connected to the heat exchange mechanism 8;

[0042] S2: After the installation is completed, the electronic components are installed and powered on: the electronic components inside the power distribution cabinet and the wires connected to the outside are installed inside the power distribution cabinet, and the installed electronic components and wires are measured. At the same time, multiple power distribution cabinet shells 1 placed side by side are connected and fixed by connecting plates 3 and bolts 4. After the fixing is completed, power is turned on for testing;

[0043] S3: Inspection and commissioning: After the power-on test is completed, the staff energizes the micro waterproof motor 63. During the power-on process, the micro waterproof motor 63 controls the air at the upper end of the embedded water tank 5 and the air inside the fixed shell 81 to circulate. After powering on for a period of time, the air temperature near the fixed shell 81 is compared with the outside temperature, and then the installation position and installation sealing degree of the circulation mechanism 6, the heat exchange mechanism 8 and the water collection mechanism 9 are inspected, and the installation is completed and put into use.

[0044] Working process: When the power distribution cabinet detects that the outside temperature is high, the micro waterproof motor 63 starts to operate and starts to exchange the air at the upper end of the embedded water tank 5 with the heat exchange mechanism 8, thereby achieving the effect of cooling the power distribution housing 1, thereby ensuring the stability of the operation of the power distribution cabinet. During the air cooling cycle, a part of the water vapor is condensed at the position between the upper conical block 83, the lower conical block 84 and the water blocking plate 86, thereby further improving the overall heat dissipation effect of the heat exchange mechanism 8;

[0045] At the same time, when the entire device is put into use, on rainy days, the rainwater collected by the connecting plate 3 can flow from the two ends to the upper end of the water collecting mechanism 9, and the water collecting mechanism 9 can collect the filtered rainwater into the embedded water tank 5 through the filter plate 94. When the water level inside the embedded water tank 5 is higher than the two-thirds position, the buoyancy ball 910 inside the curved pipe 91 will push the vertical rod 95 upward, so that the circular plate 97 and the annular plate 99 are close together, thereby preventing rainwater from entering. At the same time, the rainwater inside the conical cover shell 93 will be discharged through the inclined hole 96.

[0046] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A combined rainproof power distribution cabinet, comprising a power distribution cabinet housing (1) for installing electronic components and wiring harnesses, characterized in that: The power distribution cabinet housing (1) comprises a bottom plate (11), a sealed shell (13) is welded and fixed to the upper end of the bottom plate (11), an air cooling plate (12) is welded and fixed to the upper end of the sealed shell (13), the air cooling plate (12) comprises an upper cover plate (121), threaded holes (122) are provided at four corners of the upper end of the upper cover plate (121), and a center hole (123) is provided in the middle of the upper end of the upper cover plate (121); A pre-buried water tank (5) is installed at the bottom of the power distribution cabinet housing (1), a heat exchange mechanism (8) is installed on the inner side of the upper end of the power distribution cabinet housing (1), a circulation mechanism (6) is passed between the pre-buried water tank (5) and the heat exchange mechanism (8), and a water collection mechanism (9) is installed on one side of the pre-buried water tank (5); The circulation mechanism (6) comprises an air duct (61), a micro waterproof fan (63) is installed in the middle of the air duct (61), the middle outer side of the air duct (61) is fixedly connected to the sealed shell (13) through a fixed bracket (62), and the heat exchange mechanism (8) comprises a fixed shell (81), an upper conical block (83) is fixedly connected to the inner side of the top end of the fixed shell (81), an aluminum plate (82) is installed on the inner side of the bottom of the fixed shell (81), and both sides of the upper end of the aluminum plate (82) are welded and fixed. A water blocking plate (86) is fixedly provided, connection holes (85) are provided on both sides of the aluminum plate (82), a lower conical block (84) is fixedly connected to the upper end of the aluminum plate (82), a heat dissipation groove (87) is provided on the inner side of the bottom end of the aluminum plate (82), and the water collecting mechanism (9) comprises a bent pipe (91), a connecting flange (92) is fixedly connected to the bottom end of the bent pipe (91), a conical cover (93) is fixedly connected to the top end of the bent pipe (91), and a filter plate is fixedly connected to the inner side of the upper end of the conical cover (93). (94), both sides of the bottom end of the conical cover shell (93) are provided with inclined holes (96), the inner side of the top end of the curved tube (91) is fixedly connected with a ring plate (99), the lower end of the ring plate (99) is installed with a circular plate (97), the bottom end of the circular plate (97) is fixedly connected with a vertical rod (95), the inner side of the edge of the circular plate (97) is provided with a through hole (98), the bottom end of the vertical rod (95) is fixedly connected with a buoyancy ball (910), the curved tube (91) is L-shaped, and the bottom end of the curved tube (91) is connected by The connecting flange (92) is fixedly connected to the embedded water tank (5), the bottom of the curved pipe (91) is communicated with the embedded water tank (5), the top of the curved pipe (91) is communicated with the conical cover shell (93), the circular plate (97) is slidably connected to the inner wall of the curved pipe (91), the through holes (98) provided on the inner side of the circular plate (97) are distributed in an annular shape on the inner side of the edge of the circular plate (97), the through holes (98) are provided at the lower end of the ring plate (99), and the angle formed between the bottom end of the circular plate (97) and the vertical rod (95) is 90 degrees.

2. A combined rainproof power distribution cabinet according to claim 1, characterized in that: The distribution cabinet housings (1) are fixed by connecting plates (3) and bolts (4); a pre-buried water tank (5) is installed at the bottom of the distribution cabinet housing (1); a square groove (7) is provided on the outside of the pre-buried water tank (5); one side of the pre-buried water tanks (5) at both ends is fixedly connected to a water collection mechanism (9); the middle pre-buried water tank (5) is connected to the other side of the pre-buried water tanks (5) at both ends by a water pipe; and the vertical section of the connecting plate (3) is U-shaped.

3. The combined rainproof power distribution cabinet according to claim 1 is characterized in that: The front end of the sealing shell (13) is rotatably connected to a door panel (2); the cross section of the sealing shell (13) is U-shaped; the threaded holes (122) provided at the four corners of the upper end of the air cooling plate (12) are spirally connected to the bolts (4).

4. The combined rainproof power distribution cabinet according to claim 1 is characterized in that: The circulation mechanisms (6) are provided in plurality and are installed on both sides of the power distribution cabinet housing (1) and are parallel to each other. The upper end of the air duct (61) is fixedly connected to the aluminum plate (82) via a connection hole (85), and the lower end of the air duct (61) is connected to the embedded water tank (5).

5. The combined rainproof power distribution cabinet according to claim 1 is characterized in that: The upper conical block (83) and the lower conical block (84) are both truncated cone-shaped. A plurality of the upper conical blocks (83) and the lower conical blocks (84) are provided, and the upper conical blocks (83) and the lower conical blocks (84) are installed between water blocking plates (86). Two water blocking plates (86) are provided on the upper end of any of the aluminum plates (82). The top end of the water blocking plate (86) is in close contact with the inner wall of the fixed shell (81), and the water blocking plates (86) are parallel to each other.

6. The combined rainproof power distribution cabinet according to claim 1, characterized in that: A plurality of connection holes (85) are provided on the inner side of the aluminum plate (82). The connection holes (85) are distributed on a side of the water blocking plate (86) away from the center point of the fixed shell (81). The connection holes (85) correspond one to one with the air ducts (61).

7. The method for using a combined rainproof power distribution cabinet according to claim 1, characterized in that: S1: Dimension measurement and pre-installation: The dimensions of the installation location are measured, and then a pit is dug at the measured location. The pit depth is required to be less than 1.5 m. Then, the pre-buried water tank (5) is buried at the bottom of the pit. After the burial is completed, a concrete platform is poured at the upper end of the buried location of the pre-buried water tank (5). Then, the distribution cabinet housing (1) is installed on the upper end of the concrete platform to complete the pre-installation. During the pre-installation process, the circulation mechanism (6) is synchronously connected to the heat exchange mechanism (8); S2: After the installation is completed, the electronic components are installed and powered on: the electronic components inside the power distribution cabinet and the wires connected to the outside are installed inside the power distribution cabinet, and the installed electronic components and wires are measured. At the same time, multiple power distribution cabinet shells (1) placed side by side are connected and fixed by connecting plates (3) and bolts (4). After the fixing is completed, power is turned on for testing; S3: Inspection and commissioning: After the power-on test is completed, the staff energizes the micro-waterproof motor (63). During the power-on process, the micro-waterproof motor (63) controls the air at the upper end of the embedded water tank (5) and the air inside the fixed shell (81) to circulate. After a period of power-on, the air temperature near the fixed shell (81) is compared with the outside temperature. Then, the installation position and installation sealing degree of the circulation mechanism (6), the heat exchange mechanism (8) and the water collection mechanism (9) are inspected. The installation is completed and the device is commissioned.

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