A switch cabinet for ships

Abstract

The present invention belongs to the technical field of switch cabinets, and specifically relates to a switch cabinet for ships, comprising a cabinet body, a cabinet door and a dehumidification device, wherein an induced draft hood and a fan for introducing external air into the induced draft hood are provided on one side of the cabinet body in the left and right directions, and a replacement window is provided on the cabinet door; the dehumidification device comprises an air intake structure, a drying coil and a pulling structure; the air intake structure comprises an air intake duct and a flexible connecting component and an elastic reset component, the end of the air intake duct is connected with the induced draft hood, the side of the air intake duct is provided with an air outlet connected with the cabinet body, one end of the flexible connecting component is fixedly arranged on the side of the air intake duct, and the other end is connected to the drying coil, and the elastic reset component is connected between the cabinet body and the air intake duct; the pulling structure comprises a transition connecting component and a closing component, the closing component has a closed state and a pulling state, the replacement window is closed in the closed state, and the drying coil is pulled to the outside of the cabinet body for replacement by overcoming the elastic force of the elastic reset component in the pulling state.

Description

Technical Field

[0001] The present invention belongs to the technical field of switch cabinets, and in particular relates to a switch cabinet for ships. Background Art

[0002] In modern ships, switchgear, as a core component of the power system, is crucial for its stability and reliability. During daily use, air exchange is required between the inside and outside of the switchgear to promptly dissipate the heat generated within. Because ships are often exposed to humid marine environments, effective drying structures are required at the air inlets of the switchgear to prevent the ingress of moist air and reduce humidity inside the switchgear, thereby preventing insulation degradation and even short-circuit failures.

[0003] For example, Chinese invention patent application publication number CN116073270A discloses a heat-dissipating high-voltage switchgear cabinet. The cabinet comprises a switchgear cabinet body, a door panel rotatably connected to the exterior of the switchgear cabinet body, ventilation slots on both sides of the switchgear cabinet body, fixed frames fixed to both sides of the switchgear cabinet body, drying plates slidably connected within the fixed frames, and a fixing assembly disposed between the drying plates and the fixed frames. During operation, air outside the switchgear cabinet enters the cabinet through the ventilation slots, where the drying plates dehumidify and dry the air entering the cabinet. After a period of operation, the old drying plates are removed and replaced with new ones.

[0004] In existing technology, dehumidifiers can dehumidify the air entering the switchgear, reducing its humidity. These dehumidifiers are detachably connected, allowing for quick replacement. However, dehumidifiers are typically single-layer structures. Air passes through the dehumidifier along its thickness, undergoing a single dehumidification step before entering the switchgear. The amount of water vapor they absorb is relatively low, making them suitable for use in environments with low humidity. However, marine switchgear operates in environments with high humidity, and dehumidifiers are unable to fully absorb the moisture in the air. This results in high humidity within the switchgear, reducing its insulation performance. Summary of the Invention

[0005] The present invention provides a switch cabinet for a ship, so as to solve the technical problem that the dehumidification method in the prior art has a poor effect and cannot be applied to the use environment of a ship.

[0006] To solve the above problems, the present invention provides a marine switchgear that adopts the following technical solution: a marine switchgear comprising a cabinet body, a cabinet door provided on the front side of the cabinet body, and a dehumidification device. A draft hood and a fan for introducing external air into the draft hood are provided on one side of the cabinet body in the left and right directions, and a replacement window is provided on the cabinet door. The dehumidification device comprises an air inlet structure, a drying coil, and a pulling structure.

[0007] The air inlet structure includes an air inlet tube that is assembled in the cabinet and rotates around an axis extending left and right, a flexible connecting component, and an elastic reset component. The end of the air inlet tube is connected to the air hood, and the side of the air inlet tube is provided with an air outlet that is connected to the cabinet. One end of the flexible connecting component is fixed to the side of the air inlet tube, and the other end is connected to the drying coil. The elastic reset component is connected between the cabinet and the air inlet tube and is used to apply force to the air inlet tube to rotate it and wind the flexible connecting component and the drying coil around the air inlet tube.

[0008] The pulling structure includes a transition connection component connected to the other end of the drying coil, and a closing component connected to the transition connection component and closing the replacement window from the outside of the cabinet. The closing component has a closed state and a pulling state. When in the closed state, the replacement window is closed. When in the pulling state, the elastic force of the elastic return part is overcome to pull the transition connection component, the drying coil and the flexible connection component outward from the replacement window to pull the drying coil to the outside of the cabinet for replacement.

[0009] During use, the outside air is transported by the fan to the induced draft hood and then into the air inlet duct. The air in the air inlet duct passes through the drying coil from the side outlet and into the cabinet, where the drying coil dehumidifies and dries the air. When the switch cabinet is operating normally, the elastic reset member winds the flexible connection member and the drying coil around the outside of the air inlet duct. At the same time, the closing member closes the replacement window to prevent outside air from entering the cabinet without being dehumidified and dried. When the drying coil needs to be replaced, the closing member can pull the drying coil to the outside of the cabinet through the transition connection member. Since the fan is used to guide the air into the induced draft hood, the flow rate of the air entering the air inlet duct through the induced draft hood is relatively high. Even if the air inlet area at one end of the air inlet duct is small, it can ensure that enough air enters the cabinet for air circulation inside and outside the cabinet. Because the fan guides the air inlet, the diameter of the air inlet can be designed to be smaller, resulting in at least two overlapping layers of drying material after being wound around the air inlet. With an air inlet that draws air from one end and exhausts air from the side, the air at the outlet undergoes at least two dehumidification and drying cycles, enhancing the dehumidification effect and making it suitable for use on ships with humid air environments. Because the drying coils are connected to the air inlet via a flexible connector, the drying coils can be completely pulled out of the cabinet for replacement.

[0010] As a further improvement, the flexible connection component includes a flexible plate and a clamping block provided at one end of the flexible plate, the clamping block being used to clamp the drying coil, and the flexible plate being provided with ventilation holes. The flexible plate is connected to the drying coil via the clamping block, providing a simple connection and easy disassembly.

[0011] As a further improvement, a locking block is provided on the cabinet door along a left-right guide slide. The locking block is provided with a slot for inserting into the outside of the flexible plate. When the closure member is in the pulled state, the locking block is inserted into the outside of the flexible plate and engages with the locking block to prevent the elastic reset member from pulling the flexible plate back to its original position. The locking block can limit the flexible connection member when it is pulled outside the cabinet body, preventing the flexible connection member from returning to its original position, eliminating the need for manual fixation and facilitating operation.

[0012] As a further improvement, the transition connection component includes a U-shaped plate, a pressure plate, and a first spring, wherein the U-shaped plate is opened rearward, the pressure plate is located inside the U-shaped plate, and the first spring is connected between the pressure plate and the U-shaped plate;

[0013] One end of the drying coil extends between the pressing plate and the U-shaped plate, and the first spring presses the drying coil onto the U-shaped plate through the pressing plate.

[0014] As a further improvement, the closing component and the transition connection component are detachably assembled together;

[0015] The pulling structure also includes a mounting seat provided on the cabinet body. The transition member extends through the mounting seat from front to back and has a retaining flange for engaging with the front side of the mounting seat. The closing member and the transition member are detachably assembled and disassembled. When only the cabinet door needs to be opened, the closing member and the transition member can be separated, eliminating the need to pull the drying coil out.

[0016] As a further improvement, the mounting base is vertically adjustable within the cabinet, driving the transition member to move up and down, thereby pulling the drying coil to shield the electrical components within the cabinet. The mounting base is adjustable, and after the closure and transition member are separated, the mounting base can drive the transition member to move up and down, pulling the drying coil out during movement to partially shield the electrical components. This is suitable for use in scenarios where partial maintenance is required, reducing the amount of moist air entering the electrical components that do not require maintenance.

[0017] As a further improvement, the mounting seat includes a seat body and an elastic telescopic member arranged on the seat body. The cabinet body is provided with a plurality of limit grooves, which are arranged at intervals along the up and down directions and allow the elastic telescopic member to extend into.

[0018] As a further improvement, a partition is provided in the cabinet, which is used to divide the cabinet into at least two installation spaces. Each installation space is provided with electrical components. When the mounting seat moves up and down, it is used to pull the drying coil to cover at least one of the installation spaces.

[0019] As a further improvement, two dehumidifiers are arranged in the upper and lower directions. When inspecting electrical components in the upper installation space, the lower installation space can be shielded by the lower dehumidifier; when inspecting electrical components in the lower installation space, the upper dehumidifier can be shielded by the upper dehumidifier, making the use more flexible.

[0020] As a further improvement, the rear end of the transition connection component has a lock groove, the closing component includes a sealing plate and a locking member, the locking member includes a rotating shaft passing through the sealing plate and a locking tongue fixed to one end of the rotating shaft, and the rotating shaft is rotatably assembled on the sealing plate;

[0021] The lock tongue rotates along the axis of rotation and has a locked position and an unlocked position. In the locked position, the lock tongue rotates into the lock groove and cooperates with the front and rear stops of the lock groove to enable the sealing plate to pull the transition connection part. In the unlocked position, the lock tongue rotates out of the lock groove to separate the transition connection part and the sealing part. The rotation of the lock tongue can achieve the detachable connection between the transition connection part and the sealing part, which is simple to use.

[0022] The beneficial effects of the present invention are:

[0023] 1. During use, the outside air is transported to the induced draft hood by the fan, and then enters the air inlet duct. The air in the air inlet duct passes through the drying coil from the side outlet and enters the cabinet, and the drying coil dehumidifies and dries the air. When the switch cabinet is working normally, the elastic reset part will wind the flexible connection part and the drying coil around the outside of the air inlet duct, and the closing part will close the replacement window to prevent the outside air from entering the cabinet without dehumidification and drying. When the drying coil needs to be replaced, the closing part can pull the drying coil to the outside of the cabinet through the transition connection part. Since the fan is used to guide the air into the induced draft hood, the flow rate of the air entering the air inlet duct through the induced draft hood is relatively high. Even if the air inlet area at one end of the air inlet duct is small, it can ensure that enough air enters the cabinet for air circulation inside and outside the cabinet. Because the fan guides the air inlet, the diameter of the air inlet can be designed to be smaller, resulting in at least two overlapping layers of drying material after being wound around the air inlet. With an air inlet that draws air from one end and exhausts air from the side, the air at the outlet undergoes at least two dehumidification and drying cycles, enhancing the dehumidification effect and making it suitable for use on ships with humid air environments. Because the drying coils are connected to the air inlet via a flexible connector, the drying coils can be completely pulled out of the cabinet for replacement.

[0024] 2. The flexible board is connected to the dry coil through a card block. The connection method is simple and easy to disassemble.

[0025] 3. The locking block can limit the flexible connection component when it is pulled outside the cabinet to prevent the flexible connection component from resetting. It does not require manual fixation and is easy to operate.

[0026] 4. The closing component and the transition connection component can be disassembled and assembled together. When only the cabinet door needs to be opened, the closing component and the transition connection component can be separated, so there is no need to pull out the drying coil.

[0027] 5. The upper and lower positions of the mounting base are adjustable. After the closing component and the transition connection component are separated, the mounting base can drive the transition connection component to move up and down. During the movement, the dry coil is pulled out, thereby covering part of the electrical components. It is suitable for use scenarios where partial maintenance is required, reducing the amount of humid air entering the electrical components that do not need to be repaired.

[0028] 6. When inspecting the electrical components in the upper installation space, the lower installation space can be shielded by the dehumidification device below; when inspecting the electrical components in the lower installation space, the upper installation space can be shielded by the dehumidification device above, which makes the usage more flexible.

[0029] 7. The transition connection part and the closing part can be detachably connected by rotating the lock tongue, and the use is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a front view of the ship switch cabinet of the present invention;

[0031] Figure 2 This is a top view of the ship switch cabinet of the present invention;

[0032] Figure 3 for Figure 2 Cross-sectional view of section AA;

[0033] Figure 4 This is a perspective view of the shell of the ship switch cabinet of the present invention;

[0034] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0035] Figure 6 A side view of a housing equipped with a coil spring in a ship switch cabinet according to the present invention;

[0036] Figure 7 This is a front view of a door in a marine switch cabinet of the present invention;

[0037] Figure 8 This is a schematic diagram of the air intake structure of the ship switch cabinet of the present invention;

[0038] Figure 9This is a schematic diagram of a combination of a pulling structure and an air intake structure in a closed state in a ship switch cabinet of the present invention;

[0039] Figure 10 This is a front view of the connecting components in the ship switch cabinet of the present invention;

[0040] Figure 11 for Figure 10 Enlarged view of point C in the middle;

[0041] Figure 12 1 is a side view of the connecting components in the ship switch cabinet of the present invention;

[0042] Figure 13 This is a front view of a U-shaped plate in a marine switchgear according to the present invention;

[0043] Figure 14 This is a schematic diagram of the pull structure, air intake structure assembly, and cabinet door assembly in a closed state in the marine switch cabinet of the present invention;

[0044] Figure 15 This is a schematic structural diagram of a locking member in a ship switch cabinet according to the present invention;

[0045] Figure 16 This is a front view of a sliding seat in a ship switch cabinet according to the present invention;

[0046] Figure 17 A top view of a sliding seat in a ship switch cabinet according to the present invention;

[0047] Figure 18 This is a schematic structural diagram of the present invention when a drying coil is pulled for replacement in a ship switch cabinet;

[0048] Figure 19 for Figure 18 Enlarged view of point D in the middle.

[0049] Description of reference numerals:

[0050] 100, housing; 101, cabinet body; 102, cabinet door; 103, partition; 104, mounting seat guide groove; 105, limit groove; 106, replacement window; 107, lock block slide groove; 108, through hole;

[0051] 200, induced draft device; 201, induced draft hood; 202, fan;

[0052] 301. Air inlet structure; 302. Drying coil; 303. Pulling structure; 304. Air inlet tube; 305. Air outlet; 306. Flexible plate; 307. Block; 308. Air vent; 309. Coil spring; 310. Transition connection component; 311. Closing component; 312. Mounting seat; 313. U-shaped plate; 314. Pressing plate; 315. First spring; 316. Slot; 317. First stop protrusion; 318. Locking groove; 319, pressing protrusion; 320, sealing plate; 321, handle; 322, locking block; 323, rotating shaft; 324, locking tongue; 325, handwheel; 326, slot; 327, seat; 328, sliding rod; 329, second stopping protrusion; 330, second spring; 331, through hole; 332, U-shaped receiving groove; 333, first rod section; 334, second rod section; 335, connecting section; 336, stopping flange. DETAILED DESCRIPTION

[0053] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Those skilled in the art should know that the embodiments described below are part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0054] The embodiment of the ship switchgear provided by the present invention is as follows:

[0055] like Figures 1 to 19 As shown, a switchgear for a ship (hereinafter referred to as a switchgear) includes a housing 100, an air induction device 200, and a dehumidifier. The housing 100 is used to install electrical components. The air induction device 200 draws external air into the housing 100. The dehumidifier is used to dehumidify and dry the air entering the housing 100.

[0056] like Figures 1 to 7 As shown, the housing 100 includes a cabinet body 101 , a cabinet door 102 and a partition 103 . The cabinet body 101 has an opening on the front side. The cabinet door 102 is hinged on the opening of the cabinet body 101 . The partition 103 is located inside the cabinet body 101 .

[0057] The left and right inner walls of the opening in the cabinet 101 are provided with mounting seat guide grooves 104 extending up and down, and the front groove wall of the mounting seat guide groove 104 is provided with limiting grooves 105. There are multiple limiting grooves 105, and the multiple limiting grooves 105 are arranged at intervals along the vertical direction.

[0058] Through holes 108 are provided on both the left and right sides of the cabinet 101. The two through holes 108 on the same side are arranged at intervals in the up and down directions. The two through holes 108 above are at the same horizontal height and located at the top of the internal space of the cabinet 101. The two through holes 108 below are at the same horizontal height and located at the bottom of the internal space of the cabinet 101, which does not affect the installation of electrical components.

[0059] There are three partitions 103 , which are spaced apart in the vertical direction to divide the space inside the cabinet 101 into four installation spaces, each of which is used to install electrical components.

[0060] The cabinet door 102 has two replacement windows 106 spaced apart vertically. The front side of the cabinet door 102 has two locking block slots 107 corresponding to each replacement window 106. The locking block slots 107 communicate with the replacement windows 106 and are symmetrically arranged on the left and right sides of the replacement windows 106.

[0061] like Figure 1 and Figure 2 As shown, the air induction device 200 is installed on one side of the cabinet 101 in the left and right directions. The air induction device 200 includes an air induction cover 201 and a fan 202. The air induction cover 201 is buckled on the cabinet 101 and covers two through holes 108 on one side. The fan 202 is installed at the inlet of the air induction cover 201 to draw in external air.

[0062] like Figure 3 as well as Figures 8 to 19 As shown, there are two dehumidification devices, and the two dehumidification devices correspond one to one with the two replacement windows 106. The two dehumidification devices have the same structure, and one of them is used as an example for description.

[0063] The dehumidification device includes an air inlet structure 301 , a drying coil 302 , and a pulling structure 303 . The drying coil 302 is used to dry and dehumidify the incoming air, and the pulling structure 303 is used to pull the drying coil 302 .

[0064] like Figure 3 and Figure 9 As shown, the air inlet structure 301 includes an air inlet tube 304 , a flexible connecting component, and an elastic reset component. The flexible connecting component is connected to the side of the air inlet tube 304 , and the elastic reset component is connected between the air inlet tube 304 and the cabinet 101 .

[0065] The air inlet 304 is open at one end and closed at the other. An air outlet 305 is provided on the side of the air inlet 304, through which air in the air inlet 304 enters the cabinet 101. The air inlet 304 is rotatably mounted within the cabinet 101 around an axis extending left and right. Specifically, the two ends of the air inlet 304 are respectively inserted into the through-holes 108 on the left and right sides of the cabinet 101. The open end of the air inlet 304 is located on the same side of the cabinet 101 as the air induction device 200, and the open end extends through the through-hole 108, connecting the air inlet 304 with the interior of the air induction cover 201. During use, a dynamic seal or other structure can be provided between the exterior of the air inlet 304 and the wall of the through-hole 108 to achieve sealing.

[0066] The flexible connection component here includes a flexible plate 306 and a clamping block 307. One end of the flexible plate 306 is fixed to the side of the air inlet 304. The flexible plate 306 is provided with air holes 308 for air from the air inlet 304 to pass through. The flexible plate 306 may also have weight-reducing holes. In other embodiments, the flexible plate 306 can be replaced with a connecting rope or a connecting cloth belt.

[0067] The clamping block 307 is fixed to the other end of the flexible plate 306 for clamping the drying coil 302. There is a groove in the clamping block 307. The clamping blocks 307 are fixed on both sides of the flexible plate 306, and the middle position can also be set as needed.

[0068] The function of the elastic return member is to drive the air inlet tube 304 to rotate, thereby winding the flexible plate 306 and the drying coil 302 around the air inlet tube 304. The elastic return member is a coil spring 309, which is fixedly mounted on the portion of the air inlet tube 304 that passes through the through hole 108, and the free end of the coil spring 309 is fixed to the cabinet 101.

[0069] The drying coil 302 can specifically be a silica gel hygroscopic coil, a molecular sieve hygroscopic coil, a fiber composite hygroscopic coil, a plant fiber non-woven fabric, etc.; of course, it can also be a composite coil, which has a sandwich structure. The outer layer can be made of polyester or nylon, etc., and the middle contains a desiccant such as silica gel, molecular sieve, activated carbon, etc.

[0070] One end of the drying coil 302 is fixed to the block 307 of the flexible connection component, and the other end is fixed to the pulling structure 303. Specifically, one end of the drying coil 302 is inserted into the groove of the block 307. The initial thickness of the drying coil 302 is greater than the groove width. When the drying coil 302 is inserted into the groove, the drying coil 302 is compressed, allowing it to be inserted into the groove and reliably connected to the block 307 and the flexible plate 306.

[0071] like Figures 8 to 19As shown, the pulling structure 303 includes a transition connecting member 310, a closing member 311, and a mounting base 312. The transition connecting member 310 is located inside the cabinet 101 and is used to connect the drying coil 302. The closing member 311 is connected to the transition connecting member 310 and closes the replacement window 106 from the outside of the cabinet 101. The left and right ends of the mounting base 312 are adjusted vertically in the mounting base guide groove 104.

[0072] The transition connection component 310 includes a U-shaped plate 313, a pressure plate 314, a first spring 315, and a stopping flange 336. The pressure plate 314 is located inside the U-shaped plate 313. The first spring 315 is connected between the U-shaped plate 313 and the pressure plate 314 to apply elastic force to the pressure plate 314 so that the U-shaped plate 313 and the pressure plate 314 can clamp the drying coil 302 together.

[0073] The U-shaped plate 313 has a rearward opening and a slot 316 on its front side. First stopper protrusions 317 are telescopically mounted on the left and right walls of the slot 316. An elastic member is positioned between the first stopper protrusion 317 and the slot 316 to push against the first stopper protrusion 317. Both the top and bottom surfaces of the first stopper protrusion 317 are inclined. When the first stopper protrusion 317 is not subjected to any external force other than the elastic member, the elastic member pushes the first stopper protrusion 317 into the slot 316.

[0074] The front exterior of the U-shaped plate 313 has two locking slots 318 . Both locking slots 318 have sidewalls. The sidewalls of the two locking slots 318 are spaced apart in the left-right direction. There is a space between the sidewalls and the front of the U-shaped plate 313 .

[0075] The stopping flange 336 is located at the upper and lower positions of the front side of the U-shaped plate 313 , and its function is to stop the mounting seat 312 .

[0076] The pressing plate 314 is located inside the U-shaped plate 313 . A pressing protrusion 319 is formed at the front end of the pressing plate 314 . The pressing protrusion 319 passes through the slot 316 .

[0077] The first spring 315 is located in the slot 316. The first spring 315 is a tension spring, with its lower end fixed to the bottom inner side of the slot 316 and its upper end fixed to the pressing protrusion 319. During use, one end of the drying coil 302 extends below the pressing plate 314 and is clamped by the pressing plate 314 and the U-shaped plate 313. When the drying coil 302 needs to be replaced, the pressing plate 314 is pulled upward, which pushes against the first stop protrusion 317, causing it to retract. The pressing plate 314 then continues to rise, passing over the first stop protrusion 317, which then supports the pressing plate 314. It should be noted that in actual use, the elastic force of the first spring 315 must meet the following conditions: when overcoming the force of the coil spring 309 and pulling the drying coil 302, one end of the drying coil 302 can remain clamped between the pressing plate 314 and the U-shaped plate 313.

[0078] The closure member 311 includes a sealing plate 320, a locking member, a handle 321, and a locking block 322. The sealing plate 320 is used to seal the replacement window 106. The handle 321 is fixedly mounted on the front exterior of the sealing plate 320. The locking member is rotatably mounted on the sealing plate 320. The locking block 322 slides into the locking block slot 107 of the cabinet door 102. A sealing structure such as a sealing ring can be provided on the rear side of the sealing plate 320 (i.e., the side facing the cabinet door 102) to enhance the sealing effect of the sealing plate 320 on the replacement window 106.

[0079] Specifically, the locking member includes a rotating shaft 323, a locking tongue 324, and a handwheel 325. The rotating shaft 323 extends through the cover plate 320 and is rotatably mounted thereon. The handwheel 325 is fixed to the front end of the rotating shaft 323 (i.e., on the outside of the cabinet door 102), facilitating its operation by the operator. The locking tongue 324 is fixed to the rear end of the rotating shaft 323 and has two protruding locking ends, which correspond one-to-one with the two locking grooves 318. The locking tongue 324 has two positions during its rotation with the rotating shaft 323: a locked position and an unlocked position. When the locking tongue 324 is in the locked position, the locking end rotates into the locking groove 318, allowing the transition connection member 310 to be pulled forward when the cover plate 320 is pulled forward. When the locking tongue 324 is in the unlocked position, the locking end rotates between the two locking grooves 318, preventing the locking tongue 324 from pulling the transition connection member 310 when the cover plate 320 is pulled forward.

[0080] There are two locking blocks 322, each corresponding to one of the two locking block slots 107. The locking blocks 322 slide and fit into the locking block slots 107 along a left-right guide. The locking blocks 322 are provided with a latching slot 326 that engages the exterior of the flexible plate 306. The latching slot 326 prevents the flexible plate 306 from being retracted and wound around the air inlet duct 304 through the interlocking engagement between the locking blocks 322 and the latching blocks 307. It should be noted that the locking blocks 322 and the locking block slots 107 can be connected using a dovetail groove, T-slot, or other means to ensure relative left-right movement while preventing the locking blocks 322 from swinging back and forth.

[0081] The mounting base 312 includes a base body 327 and an elastic member. Specifically, the base body 327 has a through-hole 331 extending therethrough, through which the U-shaped plate 313 passes. A stop flange 336 abuts the front side of the base body 327, allowing the base body 327 to move the U-shaped plate 313 upward and downward, and the U-shaped plate 313 to move forward and backward relative to the base body 327.

[0082] The seat body 327 extends horizontally as a whole. The thickness of the center portion of the seat body 327 in the front-to-back direction is greater than the thickness of the left and right ends of the seat body 327 in the front-to-back direction. The left and right ends of the seat body 327 fit snugly into the mounting seat guide grooves 104, allowing the seat body 327 to slide vertically. U-shaped receiving grooves 332 are defined on the top surfaces of the left and right ends of the seat body 327.

[0083] The elastic telescopic part includes a slide rod 328, a second stopping protrusion 329, and a second spring 330. The slide rod 328 is slidably assembled on the seat body 327 along the front and rear directions. The second stopping protrusion 329 is fixed on the front side of the slide rod 328. The second spring 330 is located between the slide rod 328 and the seat body 327.

[0084] Specifically, the slide bar 328 is a U-shaped bar comprising a first bar segment 333, a second bar segment 334, and a connecting segment 335. The slide bar 328 is located in the U-shaped receiving slot 332 and is capable of moving back and forth within the U-shaped receiving slot 332. The first bar segment 333 extends from the U-shaped receiving slot 332 and is located in an opening on the front side of the cabinet 101, allowing an operator to move the slide bar 328. It should be noted that to ensure that the slide bar 328 and the base 327 can move up and down together, the slide bar 328 and the base 327 can be connected by means of a dovetail groove, a T-slot, or the like, ensuring both relative movement back and forth and a vertical connection.

[0085] The second stopping protrusion 329 is fixed on the front end surface of the second rod segment 334 . The top and bottom surfaces of the second stopping protrusion 329 are both inclined surfaces and can be retracted when touching the notch of the limiting groove 105 .

[0086] The second spring 330 is a compression spring, which is connected between the connecting section 335 and the seat body 327. It can apply elastic force to the slide rod 328, so that the second stop protrusion 329 on the slide rod 328 is pushed into the limiting groove 105, thereby maintaining the slide rod 328 and the seat body 327 where the slide rod 328 is located at a set height position.

[0087] Working principle: The switch cabinet has three working states, namely normal working state, drying coil replacement state and maintenance state.

[0088] Normal working state: The mounting seat 312 in the upper dehumidifier is in the highest position, and the mounting seat 312 in the lower dehumidifier is in the lowest position. The coil spring 309 drives the air inlet tube 304 to rotate, causing the flexible connecting member and the drying coil 302 to be wound around the air inlet tube 304. The transition connecting member 310 is located in the mounting seat 312, and the closing member 311 is pulled by the coil spring 309 to close the replacement window 106. It should be noted that in actual use, in order to improve the airtightness of the switch cabinet under normal working conditions, in addition to using the coil spring 309 to pull the sealing plate 320 and close the replacement window 106, the sealing plate 320 can be fixed to the cabinet door 102 with bolts to enhance the sealing effect. Air drawn by the fan 202 enters the hood 201 and the air inlet 304, and is then blown into the cabinet 101 through the air outlet 305 on the side of the air inlet 304. During this process, the multi-layer drying coil 302 wound around the air inlet 304 dries and dehumidifies the air multiple times. The locking block 322 seals the locking block slot 107, preventing air from entering. At this point, the sealing member 311 is in a closed state. It should be noted that gaps inevitably exist between adjacent layers of the drying coil 302. Some of the air flowing through the drying coil 302 will sequentially pass through the multi-layer structure of the drying coil 302 along the radial direction of the air inlet 304, while some will flow through the gaps along the axial direction of the air inlet 304 and into the interior of the switchgear. However, because the gaps are small and the overall air flow direction is radially along the air inlet 304, the amount of air in the gaps is small. Consequently, the humidity of the air entering the switchgear interior is still lower compared to the prior art.

[0089] Drying coil replacement status: After prolonged use, the drying coil 302 needs to be replaced. First, turn the handwheel 325 to lock the lock tongue 324. Then, pull the handle 321, causing the closing plate 320 to pull the transition connection component 310, the drying coil 302, and the flexible connection component forward in sequence until the drying coil 302 and the flexible connection component are pulled outside the cabinet 101. Then, move the locking block 322 so that it inserts into the outside of the flexible plate 306 and engages with the locking block 307. At this point, the closing component 311 is in the pulling state. The drying coil 302 is then removed from the flexible connection component and transition connection component 310 and replaced with a new drying coil 302. Then, move the locking block 322 in the opposite direction. The coil spring 309 pulls the flexible connection component, the drying coil 302, the transition connection component 310, and the closing component 311 until normal operation is restored.

[0090] Maintenance status: During maintenance, the cabinet door 102 needs to be opened. Typically, this is a partial maintenance, meaning only the electrical components within a portion of the installation space require maintenance. To reduce the impact of humid air on the electrical components in other installation spaces, the remaining installation spaces are temporarily sealed with a drying coil 302. For example, if the electrical components in the topmost installation space need to be maintained, the operator first turns the handwheel 325 to place the lock tongue 324 in the unlocked position. The cabinet door 102 is then opened. As the cabinet door 102 opens, the sealing plate 320 rotates accordingly. However, since the lock tongue 324 is separated from the lock slot 318, the transition connection component 310 does not rotate accordingly. The operator then shifts the first section 333 of the slide bar 328 in the dehumidifier upward, causing the slide bar 328 and the base 327 to move upward. The base 327 also drives the transition connection component 310 upward, pulling the drying coil 302. During the upward process, the second stopping protrusion 329 is alternately extended and retracted until it is in place, at which time the second stopping protrusion 329 is extended and stopped by the limiting groove 105, thereby keeping the slide rod 328 and the seat body 327 in the set position, and the drying coil 302 in the dehumidification device below blocks the several installation spaces below.

[0091] After the inspection is complete, the operator pulls down the first rod section 333 to reset the mounting base 312, and then closes the cabinet door 102. It should be noted that during the inspection, even if the drying coil 302 partially blocks the mounting space, there will still be a gap between the drying coil 302 and the partition 103, and outside air can still enter through this gap. It cannot completely isolate the air. The use of the drying coil 302 to block the air only reduces the amount of moist air entering, rather than completely preventing it.

[0092] In the above embodiment, the closing component 311 includes a closing plate 320 and a locking member, and the locking member includes a rotating shaft 323 and a locking tongue 324. A locking groove 318 is correspondingly provided on the transition connection component 310, and the lock tongue 324 cooperates with the locking groove 318 to achieve a detachable connection between the transition connection component 310 and the closing component 311. In other embodiments, to achieve a detachable connection between the transition connection component 310 and the closing component 311, the following method can be adopted: the closing component 311 includes a closing plate 320 and a bolt threaded through the closing plate 320, and the bolt can be screwed into the transition connection component 310, thereby connecting the closing component 311 and the transition connection component 310. The closing component 311 and the transition connection component 310 can be separated by screwing the bolt out of the transition connection component 310.

[0093] In the above embodiment, two dehumidifiers are provided. In other embodiments, only one dehumidifier may be provided. When the dehumidifier is placed at the top, the upper electrical components are shielded when the lower electrical components are inspected; when the dehumidifier is placed at the bottom, the lower electrical components are shielded when the upper electrical components are inspected.

[0094] In the above embodiment, the mounting base 312 is slidably assembled on the cabinet body 101 in the vertical direction, and adjustment to different heights is achieved through the elastic expansion member on the mounting base 312 and the limiting slot 105 on the cabinet body 101. In other embodiments, a pin hole can be provided on the mounting base 312, and a row of multiple pin holes spaced apart in the vertical direction can be provided on the cabinet body 101. After the mounting base 312 is adjusted vertically into position, a pin is inserted into the pin holes of the mounting base 312 and the cabinet body 101 to secure the mounting base 312.

[0095] In the above embodiment, to shield certain electrical components during maintenance, the transition member 310 and the closing member 311 are detachably connected, and a vertically movable mounting base 312 is provided to raise and lower the transition member 310. In other embodiments, if the only purpose is to allow replacement of the drying coil 302, the transition member 310 and the closing member 311 may be fixedly connected or integrally formed.

[0096] In the above embodiment, the transition member 310 includes a U-shaped plate 313, a pressure plate 314, and a first spring 315, which are used to securely clamp the drying coil 302. In other embodiments, a rotatable bolt can be provided on the U-shaped plate 313, which presses the pressure plate 314, so that the pressure plate 314 and the U-shaped plate 313 together clamp the drying coil 302. In other embodiments, the U-shaped plate 313 alone can be used to clamp and secure the drying coil 302, in a manner similar to that of the clamping block 307.

[0097] In addition, in the description of this specification, “a plurality of” means at least two, for example, two, three or more, etc., unless otherwise clearly and specifically defined.

Claims

1. A switch cabinet for a ship, comprising a cabinet body, a cabinet door provided on the front side of the cabinet body, and a dehumidification device, characterized in that: The left and right sides of the cabinet are equipped with an air hood and a fan that draws external air into the hood. The cabinet door is equipped with a replacement window. The dehumidification device includes an air inlet structure, a drying coil and a pulling structure. The air inlet structure includes an air inlet tube that is assembled in the cabinet and rotates around an axis extending left and right, a flexible connecting component, and an elastic reset component. The end of the air inlet tube is connected to the air hood, and the side of the air inlet tube is provided with an air outlet that is connected to the cabinet. One end of the flexible connecting component is fixed to the side of the air inlet tube, and the other end is connected to the drying coil. The elastic reset component is connected between the cabinet and the air inlet tube and is used to apply force to the air inlet tube to rotate it and wind the flexible connecting component and the drying coil around the air inlet tube. The pulling structure includes a transition connection component connected to the other end of the drying coil, and a closing component connected to the transition connection component and closing the replacement window from the outside of the cabinet. The closing component has a closed state and a pulling state. When in the closed state, the replacement window is closed. When in the pulling state, the elastic force of the elastic return part is overcome to pull the transition connection component, the drying coil and the flexible connection component outward from the replacement window to pull the drying coil to the outside of the cabinet for replacement.

2. The ship switch cabinet according to claim 1, characterized in that: The flexible connection component includes a flexible plate and a clamping block provided at one end of the flexible plate, the clamping block is used for clamping the drying coil, and the flexible plate is provided with air holes.

3. The ship switch cabinet according to claim 2, characterized in that: The cabinet door is equipped with a locking block that slides along the left and right directions. The locking block is provided with a card slot for inserting into the outside of the flexible plate. The locking block is used to insert into the outside of the flexible plate when the closing component is in a pulled state and cooperate with the card block to prevent the elastic reset member from pulling the flexible plate to reset.

4. The ship switch cabinet according to claim 1, characterized in that: The transition connection component includes a U-shaped plate, a pressure plate, and a first spring. The U-shaped plate is opened rearward, the pressure plate is located inside the U-shaped plate, and the first spring is connected between the pressure plate and the U-shaped plate. One end of the drying coil extends between the pressing plate and the U-shaped plate, and the first spring presses the drying coil onto the U-shaped plate through the pressing plate.

5. The ship switchgear according to any one of claims 1 to 4, characterized in that: The closing component and the transition connection component are detachably assembled together; The pulling structure also includes a mounting seat arranged on the cabinet body, the transition connection component passes through the mounting seat from front to back, and the transition connection component has a stopping flange for cooperating with the front side of the mounting seat.

6. The ship switch cabinet according to claim 5, characterized in that: The mounting seat is adjustably mounted in the cabinet along the up and down directions. The mounting seat is used to drive the transition connection component to move up and down, so as to pull the drying coil to shield the electrical components in the cabinet.

7. The ship switch cabinet according to claim 6, characterized in that: The mounting seat includes a seat body and an elastic telescopic member arranged on the seat body. The cabinet body is provided with a plurality of limiting grooves, which are arranged at intervals along the up and down directions and are for the elastic telescopic member to extend into.

8. The ship switch cabinet according to claim 6, characterized in that: A partition is provided in the cabinet, which divides the cabinet into at least two installation spaces. Each installation space is provided with an electrical component. When the mounting seat moves up and down, it is used to pull the drying coil to cover at least one of the installation spaces.

9. The ship switch cabinet according to claim 8, characterized in that: There are two dehumidification devices arranged in the up and down directions.

10. The ship switch cabinet according to claim 5, characterized in that: The rear end of the transition connecting component has a locking groove, and the closing component includes a sealing plate and a locking member. The locking member includes a rotating shaft passing through the sealing plate and a locking tongue fixed to one end of the rotating shaft. The rotating shaft is rotatably assembled on the sealing plate. The lock tongue has a locking position and an unlocking position along the rotation stroke of the rotating shaft. When in the locking position, the lock tongue rotates into the lock groove and cooperates with the front and rear stops of the lock groove so that the sealing plate can pull the transition connection component; when in the unlocking position, the lock tongue rotates out of the lock groove to separate the transition connection component and the closing component.

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