Waterproof device of electrical cabinet for water pumping station

Abstract

The invention discloses a waterproof device of an electrical cabinet for a water pumping station, and relates to the technical field of electrical cabinets, and the waterproof device comprises a cabinet body, a cabinet door is rotatably installed on the left side of the cabinet body, electrical equipment is arranged in the cabinet body, a door handle is rotatably installed on the left side of the cabinet door, a sealing device is arranged on the right side of the cabinet door, and a protection device is arranged in the cabinet body. A power-off protection device is arranged in the cabinet body, the sealing device comprises a first sealing strip, a second sealing strip, a fixing rod, a first bevel block, a gear, a sliding rod, a rack, an air inlet pipe and a piston, and the second sealing strip moves to make contact with the first sealing strip for sealing so that water or moisture can be prevented from entering the electrical cabinet from the outside. Water drops, rainwater or other liquid can be effectively prevented from permeating into the cabinet, electrical elements in the cabinet are protected from being damaged by water, and meanwhile short circuit, corrosion, insulation performance reduction and even equipment failure caused by the fact that water intrudes into the electrical cabinet are prevented.

Description

Technical Field

[0001] This invention relates to the field of electrical cabinet technology, specifically a waterproof device for an electrical cabinet used in a water pumping station. Background Technology

[0002] Waterproofing devices for electrical cabinets in pumping stations are crucial for ensuring the proper functioning of electrical equipment in humid, damp, or water-containing environments. Waterproofing designs protect electrical equipment from malfunctions or damage caused by moisture intrusion.

[0003] Patent publication number CN217064300U relates to the field of electrical cabinet technology. This patent discloses a waterproof device for an electrical cabinet used in a water pumping station, including a cabinet shell and a cover plate. The front side of the cabinet shell is movably connected to the rear side of the cover plate, and a fixing block is fixedly connected to the right side of the cabinet shell. This patent utilizes the coordinated use of a cover plate, fixing block, connecting block, mating block, mating groove, storage groove, fixing device, moving hole, pull plate, sealing ring, and sealing groove. Flipping the cover plate causes the sealing ring to insert into the sealing groove on the front side of the cabinet shell. Then, releasing the pull plate causes the spring to elastically deform, moving two movable plates. The movement of the movable plates causes the locking block to insert into the locking groove, thus sealing the electrical cabinet. This solves the problem that existing water pumping station electrical cabinets lack a waterproofing device on the front side. When the humidity inside the water pumping station is too high, moisture can enter the cabinet through gaps on the front side, condensing into water droplets that may burn out the equipment inside.

[0004] In the aforementioned patent, the sealing ring is inserted into the sealing groove on the front side of the cabinet by flipping the cover plate. Then, the pull plate is released, and the spring undergoes elastic deformation, causing the two movable plates to move. The movement of the movable plates causes the locking block to insert into the locking groove, thus completing the sealing of the electrical cabinet. However, after sealing the electrical cabinet, the air pressure inside and outside the electrical cabinet may be inconsistent, making it difficult to open the electrical cabinet door when needed. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a waterproof device for electrical cabinets used in water pumping stations, solving the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solution: a waterproof device for an electrical cabinet for a water pumping station, comprising a cabinet body, a cabinet door rotatably installed on the left side of the cabinet body, electrical equipment installed inside the cabinet body, a door handle rotatably installed on the left side of the cabinet door, a sealing device installed on the right side of the cabinet door, a protective device installed inside the cabinet body, and a power failure protection device installed inside the cabinet body. The sealing device includes a first sealing strip, a second sealing strip, a fixed rod, a first inclined block, a gear, a slide rod, a rack, an air inlet pipe, and a piston. The first sealing strip is fixedly installed on the right side of the cabinet door, the second sealing strip is slidably installed on the inner wall of the cabinet, the fixed rod is fixedly installed on the circumferential surface of the door handle near the first sealing strip, the first inclined block is fixedly installed on the right side of the second sealing strip, the gear is fixedly installed on the circumferential surface of the door handle near the first sealing strip, the slide rod is slidably installed inside the cabinet door, the rack is fixedly installed at the bottom of the slide rod, the air inlet pipe is fixedly installed inside the cabinet door, and the piston is fixedly installed at the end of the slide rod away from the rack. When the cabinet door is closed, the first sealing strip moves. After the cabinet door is closed, the door handle is rotated, causing the door handle to rotate, which in turn causes the first inclined block to rotate. The rotation of the first inclined block causes the second sealing strip to move, and the second sealing strip moves to contact the first sealing strip.

[0007] According to the above technical solution, the side of the fixed rod that is close to the inclined block is set as an inclined surface, the gear meshes with the rack, the piston contacts the air inlet pipe, and a spring is set between the sealing strip and the inner wall of the cabinet. By setting it as an inclined surface, it is ensured that the fixed rod can smoothly push the inclined block when rotating. By meshing, it is ensured that the gear can smoothly drive the rack to move when rotating. By contact, it is ensured that the piston can control the air intake and exhaust of the air inlet pipe. By setting the spring, it is ensured that the sealing strip can achieve self-reset.

[0008] According to the above technical solution, the protective device includes a push rod, a sliding column, a protective plate, and an inclined block. The push rod is fixedly installed on the right side of the sealing strip. The sliding column slides through the cabinet. The protective plate is fixedly installed at the end of the sliding column away from the inside of the cabinet. The inclined block is fixedly installed at the end of the sliding column away from the protective plate. When the sealing strip moves, the push rod moves. The movement of the push rod pushes the inclined block to move. The movement of the inclined block moves the sliding column. The movement of the sliding column moves the protective plate.

[0009] According to the above technical solution, the protective device also includes a long rod, two rotating columns, a transmission belt, and two clamping plates. The long rod is fixedly installed at the end of the rotating column away from the protective plate. The two rotating columns are rotatably installed at the bottom of the inner wall of the cabinet. The two rotating columns are connected by the transmission belt. The two clamping plates are fixedly installed at the top of the transmission belt. When the protective plate is subjected to friction and collision, it retracts into the cabinet and drives the long rod to move. The movement of the long rod pushes the clamping plates to move. The movement of the clamping plates drives the transmission belt to rotate. The rotation of the transmission belt drives the other clamping plate to move.

[0010] According to the above technical solution, the side of the push rod one and the inclined block two that are close to each other is set as an inclined surface, and a spring two is set between the guard plate and the cabinet. By setting the inclined surface, it is ensured that the push rod one can smoothly push the inclined block two when moving, and by setting the spring two, it is ensured that the guard plate can achieve self-reset.

[0011] According to the above technical solution, the power failure protection device includes a base, a gate body, wires, and a gate switch. The base is fixedly installed on the inner wall of the cabinet, the gate body is fixedly installed on the back of the base, the gate body is electrically connected to the electrical equipment through the wires, and the gate switch is rotatably installed on the back of the gate body. In the event of an accident inside the cabinet, the protection device inside the gate body may cut off the connection between the gate body and the wires when the electrical equipment is short-circuited, overloaded, or leaking current due to impact.

[0012] According to the above technical solution, the power failure protection device further includes an L-shaped rod, an inclined rod, an elastic telescopic rod, an inclined block three, and a push rod two. The L-shaped rod is fixedly installed at the end of the sliding column away from the protective plate. The inclined rod is slidably installed on the inner wall of the cabinet. The elastic telescopic rod is fixedly installed on the back of the base. The push rod two is fixedly installed at the movable end of the elastic telescopic rod. The inclined block three is fixedly installed at the end of the push rod two away from the switch. When the sliding column moves, it drives the L-shaped rod to move. The movement of the L-shaped rod pushes the inclined rod to move. The movement of the inclined rod pushes the inclined block three to move. The movement of the inclined block three drives the push rod two to move. The movement of the push rod two pushes the switch to rotate. The switch rotates and cuts off the connection between the switch body and the electrical equipment.

[0013] According to the above technical solution, the gate body is equipped with an overload protection device, a short circuit protection device, and a leakage protection device. The gate switch is electrically connected to the gate body. The side of the L-shaped rod and the inclined rod that are close to each other is set as an inclined surface. The side of the inclined rod and the inclined block three that are close to each other is set as an inclined surface. A spring three is set between the inclined rod and the inner wall of the cabinet. By setting the overload protection device, the short circuit protection device, and the leakage protection device, it is ensured that the gate body can automatically cut off the power in case of danger. The electrical connection ensures that the gate switch can control the state of the gate body. The inclined surface ensures that the L-shaped rod can smoothly push the inclined rod when moving. The inclined surface ensures that the inclined rod can smoothly push the inclined block three when moving. The spring three ensures that the inclined rod can achieve self-reset.

[0014] This invention provides a waterproof device for an electrical cabinet used in a water pumping station. It has the following beneficial effects: (1) The invention prevents moisture or humidity from entering the electrical cabinet from the outside by moving the second sealing strip to contact the first sealing strip. This can effectively prevent water droplets, rainwater or other liquids from seeping into the cabinet and protect the electrical components inside the cabinet from water damage. At the same time, it prevents moisture from entering the electrical cabinet and causing short circuits, corrosion, reduced insulation performance, or even equipment failure. Through the design of the piston and air inlet pipe, external air is introduced into the cabinet to balance the pressure difference between the inside and outside, reduce the pressure difference when opening the cabinet door, and make the cabinet door easier to open. This prevents the cabinet door from being difficult to open due to inconsistent internal and external pressure when the cabinet is sealed.

[0015] (2) The invention can effectively protect the electrical cabinet from external impacts or scratches when the cabinet door is closed by moving the guard plate, avoiding damage to the cabinet surface or failure of internal components due to external forces, preventing the electrical cabinet from being damaged by direct impact or friction during use, and effectively fixing the electrical equipment in place by moving the clamps on both sides of the electrical equipment when the guard plate is subjected to friction and collision, avoiding failures such as poor contact, wire disconnection or short circuit caused by equipment displacement, ensuring the normal operation of the electrical equipment, and avoiding equipment damage or failure.

[0016] (3) This invention cuts off the connection between the gate body and the power line through the protection device inside the gate body, ensuring that the equipment will not be seriously damaged due to overload, short circuit or electrical shock, preventing long-term damage to the equipment due to system failure or abnormal conditions, improving the stability of the overall system, and preventing electrical fires, electric shocks and other safety accidents caused by electrical failure or accident by rotating the gate switch and cutting off the connection between the gate body and the electrical equipment, ensuring the safety of operators and equipment, and ensuring that the power supply can still be cut off mechanically when the power failure protection device fails, thus avoiding the expansion of the fault. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the cabinet and electrical equipment structure of the present invention; Figure 3 This is a cross-sectional schematic diagram of the sealing device structure of the present invention; Figure 4 This is a cross-sectional schematic diagram of the intake pipe and piston structure of the present invention; Figure 5 This is a cross-sectional schematic diagram of the protective device structure of the present invention; Figure 6 This is a cross-sectional schematic diagram of the sliding column and guard plate structure of the present invention; Figure 7 This is a cross-sectional view of the power failure protection device of the present invention; Figure 8 This is a cross-sectional schematic diagram of the gate body and wire structure of the present invention.

[0018] In the diagram: 1. Cabinet body; 2. Cabinet door; 3. Electrical equipment; 4. Door handle; 5. Sealing strip one; 6. Sealing strip two; 7. Fixing rod; 8. Inclined block one; 9. Gear; 10. Sliding rod; 11. Rack; 12. Air inlet pipe; 13. Piston; 141. Push rod one; 142. Sliding column; 143. Protective plate; 144. Inclined block two; 145. Long rod; 146. Rotating column; 147. Transmission belt; 148. Clamping plate; 151. Base; 152. Gate body; 153. Wire; 154. Gate switch; 155. L-shaped rod; 156. Inclined rod; 157. Elastic telescopic rod; 158. Inclined block three; 159. Push rod two. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-8 One embodiment of the present invention is: a waterproof device for an electrical cabinet for a water pumping station, comprising a cabinet body 1, a cabinet door 2 rotatably installed on the left side of the cabinet body 1, electrical equipment 3 installed inside the cabinet body 1, a door handle 4 rotatably installed on the left side of the cabinet door 2, and a sealing device installed on the right side of the cabinet door 2. The sealing device includes a first sealing strip 5, a second sealing strip 6, a fixing rod 7, a first inclined block 8, a gear 9, a slide rod 10, a rack 11, an air inlet pipe 12, and a piston 13. The first sealing strip 5 is fixedly installed on the right side of the cabinet door 2. The second sealing strip 6 is slidably installed on the inner wall of the cabinet body 1. The fixing rod 7 is fixedly installed on the circumferential surface of the door handle 4 near the end of the first sealing strip 5. The first inclined block 8 is fixedly installed on the right side of the second sealing strip 6. The gear 9 is fixedly installed on the circumferential surface of the door handle 4 near the end of the first sealing strip 5. The slide rod 10 is slidably installed on... Inside the cabinet door 2, rack 11 is fixedly installed at the bottom of slide bar 10, air inlet pipe 12 is fixedly installed inside the cabinet door 2, and piston 13 is fixedly installed at the end of slide bar 10 away from rack 11. Through the movement of sealing strip 2 6, it contacts sealing strip 1 5 to seal and prevent moisture or humidity from entering the electrical cabinet from the outside. It can effectively prevent water droplets, rainwater or other liquids from seeping into the cabinet, protect the electrical components inside the cabinet from water damage, and prevent moisture from entering the electrical cabinet, which may cause short circuits, corrosion, reduced insulation performance, or even equipment failure.

[0021] The fixed rod 7 and the inclined block 8 are set as inclined surfaces on their side, the gear 9 meshes with the rack 11, the piston 13 contacts the air inlet pipe 12, and a spring is set between the sealing strip 6 and the inner wall of the cabinet 1. By setting it as an inclined surface, it is ensured that the fixed rod 7 can smoothly push the inclined block 8 when rotating. By meshing, it is ensured that the gear 9 can smoothly drive the rack 11 to move when rotating. By contact, it is ensured that the piston 13 can control the air intake and exhaust of the air inlet pipe 12. By setting the spring, it is ensured that the sealing strip 6 can achieve self-reset.

[0022] In this embodiment, during operation: After assembling and inspecting the electrical equipment 3 in the electrical cabinet, the cabinet 1 is placed in the designated position, and the cabinet door 2 is closed. The closing of the cabinet door 2 causes the sealing strip 5 to move. After the cabinet door 2 is closed, the door handle 4 is turned, causing the fixed rod 7 to rotate. The rotation of the fixed rod 7 pushes the inclined block 8 to rotate, which in turn moves the sealing strip 6. The sealing strip 6 then contacts the sealing strip 5, sealing against moisture and preventing water or humidity from entering the electrical cabinet. This effectively prevents water droplets, rainwater, or other liquids from seeping into the cabinet, protecting the electrical components inside from water damage. It also prevents moisture from entering the electrical cabinet, which could lead to short circuits, corrosion, decreased insulation performance, or even equipment malfunctions. Simultaneously, the rotation of the door handle 4 causes the gear 9 to rotate, which in turn moves the rack 11. The movement of rack 11 causes slide bar 10 to move, which in turn causes piston 13 to move. Piston 13 blocks air intake pipe 12, ensuring that moisture does not enter air intake pipe 12 in a sealed environment. When cabinet door 2 is opened, door handle 4 is turned, causing gear 9 to rotate. Gear 9 rotates, causing rack 11 to move, which in turn causes slide bar 10 to move, which in turn causes piston 13 to move. Piston 13 opens air intake pipe 12, allowing air to enter the cabinet 1 from inside air intake pipe 12. Through the design of piston 13 and air intake pipe 12, external air is introduced into the cabinet 1, balancing the pressure difference between the inside and outside, reducing the pressure difference when opening cabinet door 2, thus making cabinet door 2 easier to open and preventing the cabinet door 2 from being difficult to open due to inconsistent internal and external pressure when the cabinet 1 is sealed.

[0023] Please see Figures 1-8Based on the above embodiments, in another embodiment of the present invention, a protective device is provided inside the cabinet 1. The protective device includes a push rod 141, a sliding column 142, a protective plate 143, and a ramp block 144. The push rod 141 is fixedly installed on the right side of the sealing strip 6. The sliding column 142 slides through the cabinet 1. The protective plate 143 is fixedly installed at the end of the sliding column 142 away from the inside of the cabinet 1. The ramp block 144 is fixedly installed at the end of the sliding column 142 away from the protective plate 143. The movement of the protective plate 143 when the cabinet door 2 is closed can effectively protect the electrical cabinet from external impacts or scratches, prevent damage to the surface of the cabinet 1 or failure of internal components due to external forces, and prevent the electrical cabinet from being damaged by direct impacts or friction during use, thus preventing damage to the electrical cabinet or its internal components.

[0024] The protective device also includes a long rod 145, two rotating columns 146, a transmission belt 147, and two clamping plates 148. The long rod 145 is fixedly installed at the end of the sliding column 142 away from the protective plate 143. The two rotating columns 146 are rotatably installed at the bottom of the inner wall of the cabinet 1. The two rotating columns 146 are connected by transmission belt 147. The two clamping plates 148 are fixedly installed on the top of transmission belt 147. When the protective plate 143 is subjected to friction and collision, it drives the clamping plates 148 on both sides of the electrical equipment 3 to move, thereby clamping the electrical equipment 3 and effectively fixing the equipment in its original position. This avoids faults such as poor contact, wire detachment, or short circuit caused by equipment displacement, ensuring the normal operation of the electrical equipment 3 and preventing equipment damage or failure.

[0025] The side of push rod 141 and inclined block 144 that are close to each other is set as an inclined surface. A spring is set between the guard plate 143 and the cabinet 1. By setting the inclined surface, it is ensured that push rod 141 can smoothly push inclined block 144 when moving. By setting the spring, it is ensured that the guard plate 143 can achieve self-reset.

[0026] The power failure protection device includes a base 151, a switch body 152, a wire 153, and a switch 154. The base 151 is fixedly installed on the inner wall of the cabinet 1, and the switch body 152 is fixedly installed on the back of the base 151. The switch body 152 is electrically connected to the electrical equipment 3 through the wire 153. The switch 154 is rotatably installed on the back of the switch body 152. The protection device inside the switch body 152 cuts off the connection between the switch body 152 and the wire 153, ensuring that the equipment will not be seriously damaged due to overload, short circuit, or electrical shock, preventing long-term damage to the equipment due to system failure or abnormal conditions, and improving the stability of the overall system.

[0027] The power failure protection device also includes an L-shaped rod 155, a sloping rod 156, a flexible telescopic rod 157, a third sloping block 158, and a second push rod 159. The L-shaped rod 155 is fixedly installed at the end of the sliding column 142 away from the guard plate 143. The sloping rod 156 is slidably installed on the inner wall of the cabinet 1. The flexible telescopic rod 157 is fixedly installed on the back of the base 151. The second push rod 159 is fixedly installed at the movable end of the flexible telescopic rod 157. The third sloping block 158 is fixedly installed at the end of the second push rod 159 away from the switch 154. The switch 154 rotates and cuts off the connection between the switch body 152 and the electrical equipment 3, preventing electrical fires, electric shocks, and other safety accidents caused by electrical faults or accidents, ensuring the safety of operators and equipment, and ensuring that the power supply can still be mechanically cut off when the power failure protection device fails, thus preventing the expansion of the fault.

[0028] The gate body 152 is equipped with an overload protection device, a short circuit protection device, and a leakage current protection device. The gate switch 154 is electrically connected to the gate body 152. The side of the L-shaped rod 155 and the inclined rod 156 that are close to each other is set as an inclined surface. The side of the inclined rod 156 and the inclined block 158 that are close to each other is set as an inclined surface. A spring is set between the inclined rod 156 and the inner wall of the cabinet 1. By setting the overload protection device, the short circuit protection device, and the leakage current protection device, it is ensured that the gate body 152 can automatically cut off the power in case of danger. The electrical connection ensures that the gate switch 154 can control the state of the gate body 152. The inclined surface ensures that the L-shaped rod 155 can smoothly push the inclined rod 156 when moving. The inclined surface ensures that the inclined rod 156 can smoothly push the inclined block 158 when moving. The spring ensures that the inclined rod 156 can achieve self-reset.

[0029] In this embodiment, during operation: As the sealing strip 26 moves, it simultaneously moves the push rod 141. The push rod 141 moves the inclined block 2 144, which in turn moves the sliding column 142. The sliding column 142 then moves the protective plate 143. When the cabinet door 2 is closed, the protective plate 143 effectively protects the electrical cabinet from external impacts or scratches, preventing damage to the cabinet surface or malfunctions of internal components due to external forces. It also prevents direct impacts or friction during use that could damage the electrical cabinet or its internal components. When the protective plate 143 is subjected to... When friction and collision occur, the device retracts into the cabinet 1, simultaneously causing the long rod 145 to move. The movement of the long rod 145 pushes the clamping plate 148 to move. The movement of the clamping plate 148 causes the transmission belt 147 to rotate. The rotation of the transmission belt 147 causes another clamping plate 148 to move. When the guard plate 143 is subjected to friction and collision, it causes the clamping plates 148 on both sides of the electrical equipment 3 to move, effectively clamping the electrical equipment 3 and fixing the equipment in its original position. This avoids faults such as poor contact, wire detachment, or short circuit caused by equipment displacement, ensuring the normal operation of the electrical equipment 3 and preventing equipment damage or malfunction.

[0030] In the event of an accident inside cabinet 1, the electrical equipment 3 may experience a short circuit, overload, or leakage upon impact. The protective device inside the switch body 152 disconnects the switch body 152 from the wire 153, ensuring the equipment is not severely damaged by overload, short circuit, or electrical shock. This prevents long-term damage to the equipment due to system failures or abnormal conditions, improving the overall system stability. If the device inside the switch body 152 is damaged or malfunctions and cannot be powered off in time, the L-shaped rod 155 will begin to move simultaneously with the movement of the sliding column 142. The inclined rod 156 is pushed to start moving. The movement of the inclined rod 156 pushes the inclined block 158 to start moving. The movement of the inclined block 158 drives the push rod 159 to start moving. The movement of the push rod 159 pushes the gate switch 154 to rotate. The gate switch 154 rotates and cuts off the connection between the gate body 152 and the electrical equipment 3, preventing electrical fires, electric shocks and other safety accidents caused by electrical faults or accidents, ensuring the safety of operators and equipment, and ensuring that the power supply can still be cut off mechanically when the power failure protection device fails, thus avoiding the expansion of the fault.

[0031] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waterproof device for an electrical cabinet used in a water pumping station, comprising a cabinet body (1), characterized in that: The cabinet (1) has a cabinet door (2) installed on its left side. The cabinet (1) is equipped with electrical equipment (3). The cabinet door (2) has a door handle (4) installed on its left side. The cabinet door (2) has a sealing device on its right side. The cabinet (1) has a protective device inside and a power failure protection device inside. The sealing device includes a sealing strip (5), a sealing strip (6), a fixing rod (7), a bevel block (8), a gear (9), a slide rod (10), a rack (11), an air inlet pipe (12), and a piston (13). The sealing strip (5) is fixedly installed on the right side of the cabinet door (2). The sealing strip (6) is slidably installed on the inner wall of the cabinet body (1). The fixing rod (7) is fixedly installed on the circumferential surface of the door handle (4) near the sealing strip (5). The bevel block (8) is fixedly installed on the right side of the sealing strip (6). The gear (9) is fixedly installed on the circumferential surface of the door handle (4) near the sealing strip (5). The slide rod (10) is slidably installed inside the cabinet door (2). The rack (11) is fixedly installed at the bottom of the slide rod (10). The air inlet pipe (12) is fixedly installed inside the cabinet door (2). The piston (13) is fixedly installed at the end of the slide rod (10) away from the rack (11). The protective device includes a push rod (141), a sliding column (142), a guard plate (143), and a ramp block (144). The push rod (141) is fixedly installed on the right side of the sealing strip (6). The sliding column (142) slides through the cabinet (1). The guard plate (143) is fixedly installed at the end of the sliding column (142) away from the inside of the cabinet (1). The ramp block (144) is fixedly installed at the end of the sliding column (142) away from the guard plate (143). The protective device also includes a long rod (145), two rotating columns (146), a transmission belt (147), and two clamping plates (148). The long rod (145) is fixedly installed at the end of the sliding column (142) away from the guard plate (143). The two rotating columns (146) are rotatably installed at the bottom of the inner wall of the cabinet (1). The two rotating columns (146) are connected by transmission belt (147). The two clamping plates (148) are fixedly installed on the top of transmission belt (147). The side of the push rod (141) and the inclined block (144) that are close to each other is set as an inclined surface, and a spring is provided between the guard plate (143) and the cabinet (1); The power failure protection device includes a base (151), a gate body (152), a wire (153), and a gate switch (154). The base (151) is fixedly installed on the inner wall of the cabinet (1), the gate body (152) is fixedly installed on the back of the base (151), the gate body (152) is electrically connected to the electrical equipment (3) through the wire (153), and the gate switch (154) is rotatably installed on the back of the gate body (152). The gate body (152) is equipped with an overload protection device, a short circuit protection device and a leakage protection device. The gate switch (154) is electrically connected to the gate body (152).

2. The waterproof device for an electrical cabinet in a water pumping station according to claim 1, characterized in that: The fixed rod (7) and the inclined block (8) are inclined on the side that are close to each other. The gear (9) meshes with the rack (11). The piston (13) contacts the air inlet pipe (12). A spring is provided between the sealing strip (6) and the inner wall of the cabinet (1).

3. The waterproof device for an electrical cabinet in a water pumping station according to claim 1, characterized in that: The power failure protection device also includes an L-shaped rod (155), a sloping rod (156), an elastic telescopic rod (157), a sloping block three (158), and a push rod two (159). The L-shaped rod (155) is fixedly installed on the end of the sliding column (142) away from the guard plate (143). The sloping rod (156) is slidably installed on the inner wall of the cabinet (1). The elastic telescopic rod (157) is fixedly installed on the back of the base (151). The push rod two (159) is fixedly installed on the movable end of the elastic telescopic rod (157). The sloping block three (158) is fixedly installed on the end of the push rod two (159) away from the gate switch (154).

4. The waterproof device for an electrical cabinet in a water pumping station according to claim 3, characterized in that: The side of the L-shaped rod (155) and the inclined rod (156) that are close to each other is set as an inclined surface. The side of the inclined rod (156) and the inclined block three (158) that are close to each other is set as an inclined surface. A spring three is provided between the inclined rod (156) and the inner wall of the cabinet (1).

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