CN115714328B - Low-voltage active filter cabinet with short-circuit protection independent modules - Google Patents

Abstract

The invention discloses a low-voltage active filter cabinet provided with independent short-circuit protection modules, which relates to the technical field of active filter cabinets and comprises a low-voltage cabinet and a drawer, wherein a main power socket is fixedly arranged on one side of the inner wall of the low-voltage cabinet, the main power socket is externally connected with an air circuit breaker, a secondary signal control socket is fixedly arranged on the other side of the inner wall of the low-voltage cabinet, the drawer is longitudinally arranged in the inner space of the low-voltage cabinet, a panel is integrally and fixedly arranged on the front surface of the drawer, a display screen is embedded in the middle of the panel, and a buckle is fixedly arranged on the back surface of the panel. The invention can directly plug the drawer and the active filter body for maintenance without power failure, and can reserve one active filter body if necessary, thereby being beneficial to the design of a multi-module cavity in the filter body, being capable of realizing plug-and-play and plug-and-play, reducing the power failure time, and further carrying out short circuit protection through the arrangement of an air circuit breaker, and ensuring the operation safety of maintenance personnel.

Description

Low-voltage active filter cabinet with short-circuit protection independent modules

Technical Field

The invention relates to the technical field of active filter cabinets, in particular to a low-voltage active filter cabinet provided with independent short-circuit protection modules.

Background

The active filter cabinet is a novel power electronic device capable of dynamically restraining harmonic waves and compensating reactive power. It can compensate for harmonics of different amplitude and frequency and of different reactive power. The active filter cabinet is called an active filter because the device needs to be powered (compensating for the harmonics of the main circuit). The application of the method can overcome the harmonic suppression and reactive compensation methods such as the traditional LC filter (the traditional compensation can only be fixed), realize dynamic tracking compensation and compensate harmonic and reactive at the same time.

At present, a power system, a railway system and important equipment are very harsh in power supply reliability, the power supply system is required to be subjected to uninterrupted power supply, uninterrupted maintenance is required, some low-voltage cabinets and other equipment are required to be subjected to modularized design, some equipment, particularly an active filter, are required to be subjected to electrified maintenance, a connecting bus is not removed, a fault module in the equipment is replaced, the power failure time of the system is shortened, and meanwhile, a corresponding protection device is required to carry out short-circuit protection so as to ensure the safety of maintenance staff, and the existing equipment still has room for improvement in the field.

Accordingly, in view of the above, an improvement of the existing structure is proposed to provide a low-voltage active filter cabinet with independent short-circuit protection module.

Disclosure of Invention

The invention aims to provide a low-voltage active filter cabinet provided with independent short-circuit protection modules, so as to solve the problems in the background technology.

In order to achieve the above purpose, the present invention provides the following technical solutions: including low-voltage cabinet and drawer, low-voltage cabinet inner wall one side fixed mounting has main supply socket, and the external air circuit breaker of main supply socket, low-voltage cabinet inner wall opposite side fixed mounting has secondary signal control socket, drawer vertically arranges in low-voltage cabinet inner space, and the positive integral type fixed mounting of drawer has the panel, panel middle part embedding is installed the display screen, and panel back fixed mounting has the buckle, the positive bottom slip grafting of panel has the pull handle, and the pull handle extends in the inside integral type of drawer and be fixed with the inserted bar, the hook slot of inwards sunken has been seted up to the terminal circumference of inserted bar, and the inserted bar is pressed close to pull handle one side root fixed mounting has the spacer sleeve, spacer sleeve left side top fixed mounting has the hypoplastron, and the hypoplastron middle part runs through and has seted up the access mouth.

Further, the integrated end plate is fixedly arranged on the back of the drawer, a rotating roller is rotatably arranged in the end plate, two ends of the rotating roller are elastically connected with the end plate through torsion springs, and isolation cloth is wound on the surface of the rotating roller and covers the surface of the drawer and is fixed with the buckle in a hanging mode.

Further, the inside connecting wire that is connected with of drawer, and connecting wire end electric connection has the wave filter body, the wave filter body accepts in drawer inner space, and wave filter body one side passes through air circuit breaker and main power socket electric connection to wave filter body opposite side passes through connecting wire and secondary signal control socket electric connection.

Furthermore, the filter body bottom is integrally and fixedly provided with an upper plate, the middle part of the upper plate is provided with a through outlet in a penetrating way, and the through outlet is disconnected with the through inlet in a drawer opening state.

Further, the cooling circulation assembly is communicated between the drawer and the filter body and comprises a water pump and a circulating water channel, the water pump is arranged in the left side of the drawer, and the top of the water pump is communicated with the inside of the filter body through the circulating water channel.

Further, the cooling circulation assembly further comprises a straight pipe and a module cavity, the middle part of the circulation water channel is vertically communicated with the straight pipe, the straight pipe is transversely and equidistantly arranged inside the filter body, and the inner space of the filter body is divided into a plurality of independent module cavities by the straight pipe.

Further, the cooling circulation assembly further comprises a water pipe, an air cooling bin and a backflow water channel, the bottom of the straight pipe is communicated with the water pipe through a water inlet, the water pipe is wound outside the air cooling bin, the air cooling bin is arranged inside the right side of the drawer, the tail end of the water pipe is communicated with the backflow water channel, and the backflow water channel is communicated with the circulation water channel through a water pump to form a closed loop.

Further, the corner of the left side and the lower side of the drawer is provided with a power-off assembly, the power-off assembly comprises a machine body and a plug, the bottom of the left side of the machine body is provided with the plug, and the plug is electrically connected with the low-voltage cabinet through a main power socket and a secondary signal control socket.

Furthermore, the outage subassembly still includes spout and lug, the spout has been seted up at the organism middle part, and the organism passes through spout slidable mounting in the lug outside, lug and drawer integral type fixed connection.

Further, outage subassembly still includes perpendicular plate, spring post and colludes the board, organism bottom fixed mounting has perpendicular plate, and perpendicular plate passes through right side spring post and drawer left side lower border elastic connection, organism right side integral type fixed mounting has colludes the board, and colludes the board and collude the inslot gomphosis fixed.

The invention provides a low-voltage active filter cabinet provided with independent short-circuit protection modules, which has the following beneficial effects: under the condition of no power failure, the drawer and the active filter body can be directly plugged and unplugged for maintenance, and one active filter body can be reserved when necessary, so that the filter body is beneficial to the design of a multi-module cavity in the filter body, the plug-and-play operation can be realized, the power failure time is shortened, and in addition, the short circuit protection is carried out through the arrangement of an air circuit breaker, so that the operation safety of maintenance personnel is ensured;

1. in the use process, the power source assembly in the cooling circulation assembly is integrated in the drawer, the circulating water channel is integrated in the active filter body, when the active filter body is overhauled and replaced, the power source is not required to be replaced, the operation and maintenance cost is greatly reduced, the cooling liquid is introduced into the circulating water channel in the drawer from the circulating water channel in the filter body under the action of the water pump, the filter body is divided into a plurality of independent module cavities by arranging the transverse equidistant straight pipes in the filter body, the overhauling personnel can conveniently replace the components in the appointed module cavities, the instant pulling and the instant replacing can be realized, the instant inserting and the instant using can be realized, the power failure time is reduced, the water pipe is wound outside the air cooling bin, the heat exchange efficiency of the cooling liquid is improved in a mode of combining air cooling and water cooling, the internal environment of the drawer is always suitable for the placement of the active filter body, the service life and the working efficiency of the active filter body are improved, compared with the prior art, the effect is poor, the heat is accumulated in the low-pressure cabinet and is accumulated above the low-pressure cabinet, and the top part of the active filter body is influenced by the heat dissipation life of the active filter body.

2. In the use process, the isolating cloth is wound on the surface of the rotating roller, the two ends of the rotating roller are elastically connected with the end plates through the torsion springs to play a role of automatic resetting, and the isolating cloth hidden on the back of the drawer can completely cover the space above the drawer through pulling the isolating cloth and is hung and fixed with the buckles on the front of the drawer, so that the heat dissipation of the current active filter body is only limited in the drawer, heat accumulation caused by dissipation in the low-voltage cabinet is avoided, and the running state of each layer of active filter body in the low-voltage cabinet is maintained stable.

3. In the use process, the drawer is electrically connected with the active filter body through the connecting wire penetrating through the back, and the input end of the connecting wire is electrically connected with the main power socket and the secondary signal control socket respectively, so that the drawer and the active filter body are directly plugged and unplugged for overhauling under the condition of no power failure, plug and play is realized, the power failure time is shortened, in addition, the short circuit protection is realized through the arrangement of the air circuit breaker, the operation safety of overhaulers is ensured, and compared with the defect that the filter body can be taken out under the condition that the low-voltage cabinet is required to be powered off in the prior art, the method possibly brings economic loss and safety risk in long-time power failure in practical application, and the applicability is stronger through overhauling the filter body under the condition of no power failure.

4. In the use process, an maintainer pulls the pull handle, on one hand, the through-inlet of the lower plate is disconnected from the through-outlet of the upper plate, so that the connecting channel of the straight pipe through-water pipe is disconnected, the maintainer can conveniently take out the filter body independently without taking down the filter body together with a drawer, the maintenance flow is simplified, the maintenance efficiency is improved, the delay time caused by replacing the filter body is shortened, and the outage duration of the low-voltage cabinet is reduced.

5. In the use process, an maintainer pulls the pull handle, and on the other hand, the machine body is clamped with the hooking plate through the hooking groove, so that the machine body is retracted through the convex blocks at the two sides of the left end of the drawer through the middle sliding groove, and the vertical plate extrudes the spring column to enable the plug to tilt up from the inside of the main power socket, so that the power-off of the filter body is realized, the wire connection with the low-voltage cabinet is cut off in time when the current filter body needs to be replaced, and the safety operation of the maintainer is ensured.

Drawings

FIG. 1 is a schematic diagram of the overall position distribution structure of a low-voltage active filter cabinet provided with a short-circuit protection independent module;

fig. 2 is a schematic diagram of a drawer top view structure of a low-voltage active filter cabinet provided with a short-circuit protection independent module according to the present invention;

FIG. 3 is a schematic diagram of the drawer side view internal structure of a low voltage active filter cabinet with independent short circuit protection modules according to the present invention;

fig. 4 is a schematic drawing of a pull-handle perspective structure of a low-voltage active filter cabinet provided with a short-circuit protection independent module;

fig. 5 is a schematic diagram of the internal structure of a filter body of a low-voltage active filter cabinet provided with a short-circuit protection independent module according to the present invention;

FIG. 6 is a schematic diagram of an isolated cloth structure of a low-voltage active filter cabinet with independent short-circuit protection modules according to the present invention;

FIG. 7 is a schematic diagram of the external structure of a drawer side view of a low-voltage active filter cabinet with independent short-circuit protection modules;

fig. 8 is an enlarged schematic diagram of the structure of the low-voltage active filter cabinet in fig. 7 a, in which the short-circuit protection independent module is provided.

In the figure: 1. a low-voltage cabinet; 2. a main power outlet; 3. an air circuit breaker; 4. a secondary signal control socket; 5. a drawer; 6. a panel; 7. a display screen; 8. a buckle; 9. a pull handle; 10. a rod; 11. a hooking groove; 12. a limit sleeve; 13. a lower plate; 14. a vent port; 15. an end plate; 16. a rotating roller; 17. a torsion spring; 18. a spacer cloth; 19. a connecting wire; 20. a filter body; 21. an upper plate; 22. a vent; 23. a cooling circulation assembly; 2301. a water pump; 2302. a circulating water channel; 2303. a straight pipe; 2304. a module cavity; 2305. a water pipe; 2306. an air cooling bin; 2307. a return water channel; 24. a power-off assembly; 2401. a body; 2402. a plug; 2403. a chute; 2404. a bump; 2405. a vertical plate; 2406. a spring post; 2407. and a hook plate.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention

Referring to fig. 1 to 8, the present invention provides a technical solution: the utility model provides a low pressure active filter cabinet that independent module of short circuit protection set up, including low-voltage cabinet 1 and drawer 5, main power socket 2 is fixed to one side of low-voltage cabinet 1 inner wall, and main power socket 2 external air circuit breaker 3, secondary signal control socket 4 is fixed to the opposite side of low-voltage cabinet 1 inner wall, drawer 5 vertically arranges in low-voltage cabinet 1 inner space, and drawer 5 front integral type fixed mounting has panel 6, panel 6 middle part embedding is installed display screen 7, and panel 6 back fixed mounting has buckle 8, panel 6 front bottom slip grafting has pull handle 9, and pull handle 9 extends in drawer 5 inside integral type is fixed with inserted bar 10, the hook groove 11 of inwards sunk is seted up to inserted bar 10 end circumference, and inserted bar 10 is pressed close to pull handle 9 one side root fixed mounting and is spacing sleeve 12, spacing sleeve 12 left side top fixed mounting has lower plate 13, and the opening 14 has been run through in the middle part of lower plate 13;

the operation is that the external power supply of the low-voltage cabinet 1 is not powered off, the drawer 5 is powered off from the low-voltage cabinet 1, the drawer 5 is electrically connected with the active filter body 20 through a connecting wire 19 penetrating through the back, the input end of the connecting wire 19 is electrically connected with the main power socket 2 and the secondary signal control socket 4 respectively, so that the drawer 5 is directly plugged and unplugged to overhaul the module cavity 2304 in the active filter body 20 under the condition of no power outage, the power outage time is shortened, in addition, the short circuit protection is carried out through the arrangement of the air circuit breaker 3, the operation safety of an overhaul personnel is ensured, the overhaul personnel pulls the pull handle 9, on one hand, the through port 14 of the lower plate 13 is disconnected from the through port 22 of the upper plate 21, the connecting channel of the straight pipe 2303 for the water pipe 2305 is disconnected, the power source component in the cooling circulation component 23 is integrated in the drawer 5, and the circulation channel 2302 is integrated in the active filter body 20, when the overhaul of the active filter body 20 is carried out, the power source is not needed to be replaced, the operation cost is greatly reduced, the operation is enabled to be independent, the overhaul time of the drawer 20 is not needed to be removed, the overhaul time is shortened, and the overhaul time is shortened due to the fact that the overhaul time is not needed to the drawer is taken down is singly and the filter body is not required to be replaced, and the overhaul time is 1;

referring to fig. 2 and 6, an end plate 15 is integrally and fixedly mounted on the back of the drawer 5, a roller 16 is rotatably mounted inside the end plate 15, two ends of the roller 16 are elastically connected with the end plate 15 through torsion springs 17, an isolating cloth 18 is wound on the surface of the roller 16, the isolating cloth 18 is covered on the surface of the drawer 5 and is fixedly hung on a buckle 8, a connecting wire 19 is connected to the inner side of the drawer 5, the tail end of the connecting wire 19 is electrically connected with a filter body 20, the filter body 20 is received in an inner space of the drawer 5, one side of the filter body 20 is electrically connected with a main power socket 2 through an air circuit breaker 3, the other side of the filter body 20 is electrically connected with a secondary signal control socket 4 through the connecting wire 19, an upper plate 21 is integrally and fixedly mounted at the bottom of the filter body 20, a through outlet 22 is penetratingly arranged in the middle of the upper plate 21, and the through outlet 22 is disconnected from the through inlet 14 in a pulled-out state of the drawer 5;

the operation is that the isolating cloth 18 is wound on the surface of the rotating roller 16, the two ends of the rotating roller 16 are elastically connected with the end plate 15 through the torsion spring 17 to play an automatic resetting role, the isolating cloth 18 hidden on the back of the drawer 5 can completely cover the space above the drawer 5 through pulling the isolating cloth when in use and is hung and fixed with the buckle 8 on the front of the drawer 5, so that the heat dissipation of the current active filter body 20 is only limited in the drawer 5, and the heat accumulation caused by the dissipation in the low-voltage cabinet 1 is avoided, and the running state of each layer of active filter body 20 in the low-voltage cabinet 1 is maintained stable;

referring to fig. 3 and 5, a cooling circulation assembly 23 is communicated between a drawer 5 and a filter body 20, the cooling circulation assembly 23 comprises a water pump 2301 and a circulation water channel 2302, the water pump 2301 is arranged in the left side of the drawer 5, the top of the water pump 2301 is communicated with the inside of the filter body 20 through the circulation water channel 2302, the cooling circulation assembly 23 further comprises a straight pipe 2303 and a module cavity 2304, the middle part of the circulation water channel 2302 is vertically communicated with the straight pipe 2303, the straight pipe 2303 is transversely and equidistantly arranged in the inside of the filter body 20, the straight pipe 2303 divides the internal space of the filter body 20 into a plurality of independent module cavities 2304, the cooling circulation assembly 23 further comprises a water pipe 2305, an air cooling cabin 2306 and a backflow water channel 2307, the bottom of the straight pipe 2303 is communicated with the water pipe 2305 through an inlet 14, the water pipe 2305 is wound outside the air cooling cabin 2306, the air cooling cabin 2306 is arranged in the right side of the drawer 5, the tail end of the water pipe 2305 is communicated with the backflow water channel 2307, and the backflow water channel 2307 is formed by connecting the water pipe 2302 through the water pump 2301;

the operation is that the cooling liquid is led into a backflow water channel 2307 in a drawer 5 from a circulation water channel 2302 in the filter body 20 under the action of a water pump 2301, and the filter body 20 is divided into a plurality of independent module cavities 2304 by arranging transverse equidistant straight pipes 2303 in the filter body 20, so that maintenance staff can conveniently replace components in the appointed module cavities 2304, the water pipes 2305 are wound outside an air cooling bin 2306, the heat exchange efficiency of the cooling liquid is improved by combining air cooling and water cooling, the internal environment of the drawer 5 is always suitable for placing the active filter body 20, and the service life and the working efficiency of the active filter body 20 are improved;

referring to fig. 7 and 8, the power-off assembly 24 is disposed at the corners of the left and lower sides of the drawer 5, the power-off assembly 24 includes a housing 2401 and a plug 2402, the plug 2402 is disposed at the bottom of the left side of the housing 2401, the plug 2402 is electrically connected with the low-voltage cabinet 1 through a main power socket 2 and a secondary signal control socket 4, the power-off assembly 24 further includes a chute 2403 and a bump 2404, the chute 2403 is disposed in the middle of the housing 2401, the housing 2401 is slidably mounted outside the bump 2404 through the chute 2403, the bump 2404 is integrally and fixedly connected with the drawer 5, the power-off assembly 24 further includes a hanging plate 2405, a spring post 2406 and a hook plate 2407, the bottom of the housing 2401 is fixedly mounted with the hanging plate 2405, the hanging plate 2405 is elastically connected with the left lower edge of the drawer 5 through a right side spring post 2406, the hook plate 2407 is integrally fixedly mounted on the right side of the housing 2401, and the hook plate 2407 is fixedly embedded in the hook groove 11;

the specific operation is as follows, through the block of collude groove 11 and collude board 2407 for organism 2401 is located drawer 5 left end both sides lug 2404 through middle part spout 2403 and falls back, and perpendicular board 2405 extrudes spring column 2406 and makes plug 2402 warp in by main power socket 2, realizes the outage of filter body 20, makes in time cut off the wire connection with low-voltage cabinet 1 when needing to change current filter body 20, ensures maintainer's safe operation.

In sum, when the low-voltage active filter cabinet provided with the short-circuit protection independent module is used, cooling liquid is led into the reflux water channel 2307 in the drawer 5 from the circulating water channel 2302 in the filter body 20 under the action of the water pump 2301, the transverse equidistant straight pipes 2303 in the filter body 20 are arranged, the filter body 20 is divided into a plurality of independent module cavities 2304, a maintainer can conveniently replace the components in the appointed module cavities 2304, the water pipe 2305 is wound outside the air cooling bin 2306, the heat exchange efficiency of the cooling liquid is improved in an air cooling and water cooling combined mode, the internal environment of the drawer 5 is always suitable for the placement of the active filter body 20, the service life and the working efficiency of the active filter body 20 are improved, the isolating cloth 18 is wound on the surface of the rotating roller 16, the two ends of the rotating roller 16 are elastically connected with the end plate 15 through the torsion spring 17 to play an automatic resetting role, the isolating cloth 18 is hidden on the back of the drawer 5, when in use, the upper space of the drawer 5 can be completely covered by pulling the drawer 5 and hung and fixed with the buckle 8 on the front surface of the drawer 5, so that the heat dissipation of the current active filter body 20 is only limited in the drawer 5, but can not be accumulated due to heat dissipation in the low-voltage cabinet 1, the stability of the running state of each layer of active filter body 20 in the low-voltage cabinet 1 is maintained, and when the maintenance is needed, the current filter body 20 is distinguished according to specific actual conditions whether the maintenance is needed for the independent module in the low-voltage cabinet or the integral replacement is needed, under the former condition, the external power supply of the low-voltage cabinet 1 is not powered off, the drawer 5 is powered off from the low-voltage cabinet 1, the drawer 5 is electrically connected with the active filter body 20 through the connecting wire 19 penetrating through the back surface, the input end of the connecting wire 19 is respectively electrically connected with the main power socket 2 and the secondary signal control socket 4, make this application possible under the circumstances of not having a power failure, direct plug drawer 5 overhauls the inside module chamber 2304 of active filter body 20, plug and play, reduce the power failure time, still carry out short-circuit protection through the setting of air circuit breaker 3 in addition, ensure the operation safety of maintainer, the latter circumstances, the maintainer is through the pulling to pulling 9, on the one hand, make the access 14 of hypoplastron 13 and the logical export 22 disconnection of upper plate 21, make the straight tube 2303 lead in the connecting channel disconnection of water pipe 2305, the power supply subassembly in the cooling circulation subassembly 23 is integrated in drawer 5, and circulation water course 2302 then is integrated in active filter body 20, when carrying out the maintenance replacement of active filter body 20, need not replace the power supply, greatly reduced operation maintenance cost, make maintainer take out filter body 20 alone, and need not connect drawer 5 take off in the lump, the maintenance flow, promote efficiency, the time of having shortened because of replacing filter body 20, reduce the outage of low-voltage cabinet 1 on the other hand, hook groove 11 and clamp 2403 make 2401 be located the main power supply 2402 when the time-saving plug 2402 is connected with the main body 2401 through the main power supply of the plug 2406, make the electrical equipment 2402 when the plug is connected to the main power converter 2401 in time, the time of the time-saving plug 2402.

The embodiments of the invention have been presented for purposes of illustration and description, and are not intended to be exhaustive or limited to the invention in the form disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, and to enable others of ordinary skill in the art to understand the invention for various embodiments with various modifications as are suited to the particular use contemplated.

Claims (5)

1. The utility model provides a low pressure active filter cabinet that independent module of short circuit protection set up, its characterized in that, including low-voltage cabinet (1) and drawer (5), main power socket (2) are installed to low-voltage cabinet (1) inner wall one side fixed mounting, and main power socket (2) external air circuit breaker (3), low-voltage cabinet (1) inner wall opposite side fixed mounting has secondary signal control socket (4), drawer (5) vertical arrangement is in low-voltage cabinet (1) inner space, and drawer (5) positive integral type fixed mounting has panel (6), panel (6) middle part embedding is installed display screen (7), and panel (6) back fixed mounting has buckle (8), panel (6) positive bottom slip grafting has pull handle (9), and pull handle (9) extend in drawer (5) inside integral type be fixed with inserted bar (10), the end circumference of inserted bar (10) is seted up inwards sunken collude groove (11), and inserted bar (10) one side root fixed mounting of pull handle (9) has limit sleeve (12), limit sleeve (12) middle part embedding is installed display screen (13), and draw-out (13) are connected with top (13) and are connected with top (13), and filter body (20) is connected with end electric connection of connecting wire (19), filter body (20) accept in drawer (5) inner space, and filter body (20) one side is through air circuit breaker (3) and main power socket (2) electric connection to filter body (20) opposite side is through connecting wire (19) and secondary signal control socket (4) electric connection, filter body (20) bottom integral type is fixed with upper plate (21), and upper plate (21) middle part runs through and has seted up through export (22), through export (22) are disconnected with access port (14) under drawer (5) pull-open state, the intercommunication has cooling circulation subassembly (23) between drawer (5) and filter body (20), cooling circulation subassembly (23) include water pump (2301) and circulation water course (2302), water pump (2301) are located drawer (5) left side inside, and water pump (2301) top are linked together with filter body (20) inside through circulation water course (2302), cooling circulation subassembly (23) still include (3) and straight tube (2) are arranged in the inside space of filter body (20) and are perpendicular to straight tube (3) and straight tube (20), the filter comprises a filter body (20), and is characterized in that the inner space of the filter body (20) is divided into a plurality of independent module cavities (2304) by the straight tube (2303), the cooling circulation assembly (23) further comprises a water tube (2305), an air cooling bin (2306) and a backflow water channel (2307), the water tube (2305) is communicated with the bottom of the straight tube (2303) through a through inlet (14), the water tube (2305) is wound outside the air cooling bin (2306), the air cooling bin (2306) is arranged inside the right side of the drawer (5), the end of the water tube (2305) is communicated with the backflow water channel (2307), and the backflow water channel (2307) is communicated with the circulation water channel (2302) through a water pump (2301) to form a closed loop.

2. The low-voltage active filter cabinet provided with the independent short-circuit protection module according to claim 1, wherein an end plate (15) is fixedly arranged on the back of the drawer (5) in an integrated mode, a rotating roller (16) is rotatably arranged inside the end plate (15), two ends of the rotating roller (16) are elastically connected with the end plate (15) through torsion springs (17), an isolating cloth (18) is wound on the surface of the rotating roller (16), and the isolating cloth (18) covers the surface of the drawer (5) and is fixedly hung on the buckle (8).

3. The low-voltage active filter cabinet set by the independent short-circuit protection module according to claim 1, wherein power-off components (24) are arranged at corners of the left side and the lower side of the drawer (5), the power-off components (24) comprise a machine body (2401) and a plug (2402), the plug (2402) is arranged at the bottom of the left side of the machine body (2401), and the plug (2402) is electrically connected with the low-voltage cabinet (1) through a main power socket (2) and a secondary signal control socket (4).

4. The low-voltage active filter cabinet set up by the independent module of a short circuit protection according to claim 3, wherein the power-off assembly (24) further comprises a chute (2403) and a bump (2404), the chute (2403) is arranged in the middle of the machine body (2401), the machine body (2401) is slidably mounted outside the bump (2404) through the chute (2403), and the bump (2404) is integrally and fixedly connected with the drawer (5).

5. The low-voltage active filter cabinet set up by the independent module of a short circuit protection according to claim 3, wherein, the outage subassembly (24) still includes perpendicular plate (2405), spring post (2406) and collude board (2407), perpendicular plate (2405) is installed to organism (2401) bottom fixed mounting, and perpendicular plate (2405) are connected with drawer (5) left side lower border elasticity through right side spring post (2406), organism (2401) right side integral type fixed mounting has collude board (2407), and collude board (2407) and collude the inboard gomphosis of groove (11) fixed.

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