CN115459112A

CN115459112A - Self-adjusting waterproof heat-dissipation and anti-freezing power distribution cabinet

Info

Publication number: CN115459112A
Application number: CN202211086415.6A
Authority: CN
Inventors: 夏鹏
Original assignee: Jiangsu Yuen Tong Electric Co ltd
Current assignee: Jiangsu Yuen Tong Electric Co ltd
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2022-12-09

Abstract

The invention discloses a self-adjusting waterproof, heat-dissipation and anti-freezing power distribution cabinet, which belongs to the field of power distribution cabinets and comprises a cabinet body, a breathable net plate and an adjusting net box, wherein the bottom of the cabinet body is provided with a through groove, the breathable net plate is fixed on the inner wall of the cabinet body, and the adjusting net box is arranged in the breathable net plate; the inner wall of the adjusting net box is provided with an expansion bag, the bottom wall of the adjusting net box is provided with a metal long box, the bottom wall of the adjusting net box is provided with a connecting plate in a penetrating way, and the top of the connecting plate is provided with a long strip plate; even the bottom of board is connected with the movable plate, and the inside packing of movable plate has to separate the temperature cotton, and the enclosure is installed at the top of movable plate, can carry out the self-adjusting to the humidity in the environment that the switch board is located for the switch board can cross to have nimble waterproof radiating effect concurrently, to the phenomenon of freezing winter in addition, can realize the shutoff once more of movable plate and keep warm with the help of the long box inside water of metal and freeze the expanded lifting effect, guarantee the safe handling of switch board.

Description

Self-adjusting waterproof heat-dissipation and anti-freezing power distribution cabinet

Technical Field

The invention relates to the field of power distribution cabinets, in particular to a self-adjusting waterproof, heat-dissipation and anti-freezing power distribution cabinet.

Background

The switch board is a general name of a motor control center, the switch board is formed by assembling switch equipment, a measuring instrument, a protective electrical appliance and auxiliary equipment in a closed or semi-closed metal cabinet or on a screen according to the electric wiring requirement to form a low-voltage distribution device, and a circuit can be switched on or switched off by a manual or automatic switch in normal operation. When a fault or abnormal operation occurs, the circuit is cut off or an alarm is given by means of the protective electrical appliance, and the inside of the power distribution cabinet contains a large number of wires and circuit sets, so that the power distribution cabinet has strict requirements on water resistance and heat dissipation, and the safe use of the power distribution cabinet is ensured.

Present switch board is when the heat dissipation, mostly use water-cooling or air-cooled mode to go on, in waterproof aspect, generally adopt passive water proof's mode, but in practical application, the heat dissipation need be guaranteed that switch board and external environment keep the circulation of air, but waterproof need keep switch board and external environment to keep the isolated state of air, therefore both have the contradiction, need nimble structure of adjusting the contact state who switches switch board and external environment to guarantee that the switch board can have waterproof radiating effect concurrently, low temperature icing phenomenon also can produce interference and destruction to the inside power component of switch board in addition, need arouse attention.

Therefore, a self-adjusting waterproof, heat-dissipation and anti-freezing power distribution cabinet is provided to solve the problems.

Disclosure of Invention

1. Technical problem to be solved

Aiming at the problems in the prior art, the invention aims to provide a self-adjusting waterproof heat-dissipation anti-freezing power distribution cabinet, which can be self-adjusted according to the humidity in the environment where the power distribution cabinet is located, so that the power distribution cabinet is in a blocking state, the erosion of external water vapor is reduced, meanwhile, the upward blocking of a movable plate drives a supporting and adjusting module to realize the adjustment of the supporting height and reduce the water body soaking, and in addition, according to the phenomenon of freezing in winter, the movable plate can be blocked again by means of the lifting effect of the freezing and expansion of the water body in a metal long box, and the freezing state of the water body is maintained by means of a waterproof membrane, so that the power distribution cabinet is not interfered by the external freezing, and the safe use of the power distribution cabinet is ensured.

2. Technical scheme

In order to solve the above problems, the present invention adopts the following technical solutions.

A self-adjusting type waterproof, heat-dissipation and anti-freezing power distribution cabinet comprises a cabinet body, a ventilating screen plate and a regulating net box, wherein a through groove is formed in the bottom of the cabinet body, the ventilating screen plate is fixed on the inner wall of the cabinet body, the cross section area of the ventilating screen plate is larger than that of the through groove, and the regulating net box penetrates through the ventilating screen plate;

the inner wall of the adjusting net box is provided with symmetrically arranged expansion bags made of elastic yarn fabric, the expansion bags are filled with expansive soil, the bottom wall of the adjusting net box is provided with a metal long box, the metal long box is positioned in the middle of the expansion bags, the bottom wall of the adjusting net box is provided with a connecting plate in a penetrating and sliding mode, and the top of the connecting plate is provided with a strip plate;

the bottom of the connecting plate is connected with a movable plate, the movable plate is located below the through groove and is the same as the sectional area of the through groove, the heat insulation cotton is filled in the movable plate, the enclosure is installed at the top of the movable plate, the enclosure frame is installed on the inner wall of the through groove, and the width of the enclosure frame is larger than that of the enclosure frame.

Further, the bottom four corners of the cabinet body all installs and supports adjusting module, four groups support adjusting module and be located the outside that leads to the groove, support adjusting module including central axostylus axostyle, riser, unable adjustment base and auxiliary base, the surface mounting of central axostylus axostyle has two sets of symmetrical arrangement's riser, and one of them is a set of the tail end of riser is connected with the bottom of the cabinet body through the axle piece, and another group the tail end of riser is connected with unable adjustment base through the axle piece, the surface mounting of central axostylus axostyle has auxiliary base, and auxiliary base is located the centre of two sets of risers, the rubber pad is installed to auxiliary base's bottom.

Furthermore, a spring is arranged on the surface of one side, close to the inside, of the other group of vertical plates, a stay cable is arranged on the surface of the central shaft lever, and the tail end of the stay cable is connected with the bottom of the movable plate.

Furthermore, the height of the metal long box is larger than that of the expansion bag, and the top of the metal long box is connected with a waterproof film in a sealing mode through waterproof glue.

Further, the water proof membrane comprises stratum reticulare, water-stop membrane, heat preservation and adventitia, the stratum reticulare is installed at the top of long box of metal, the water-stop membrane is installed at the top of stratum reticulare, the heat preservation is installed at the top of water-stop membrane, the adventitia is installed at the top of heat preservation, the surface of adventitia is equipped with anti-skidding line, the heat preservation cover has been cup jointed on the surface of long box of metal, and the bottom on heat preservation cover and the long box surperficial bottom fixed connection of metal, the top of heat preservation cover is passed through the nylon wire and is connected with the surface of water proof membrane.

Furthermore, the net layer is made of nano-fiber aerogel, and the heat insulation layer is made of elastic cotton.

Furthermore, a groove is formed in the top of the breathable net plate, a molecular sieve is installed inside the groove, and a breathable film is installed on the top of the molecular sieve.

Furthermore, the bottom of the strip plate is provided with symmetrically arranged spacing blocks, and the spacing blocks are as long as the strip plate.

Furthermore, two sets of symmetrically arranged fans are installed inside the cabinet body and are located above the breathable net plate.

Further, an inner cabinet door is installed inside the cabinet body through a hinge, and an outer cabinet door is installed on the front side of the cabinet body through a hinge.

3. Advantageous effects

Compared with the prior art, the invention has the advantages that:

(1) According to the invention, the adjusting net box is installed, the expansion bag, the metal long box, the connecting plate and the strip plate are installed inside the adjusting net box, when the humidity in the external environment is higher, water vapor enters the inside of the adjusting net box through the through grooves, so that the expansion soil inside the expansion bag expands, the strip plate is lifted, the through grooves can be plugged by the movable plate, the inside of the expansion bag is dried by means of the heat inside the cabinet body in the follow-up process, the movable plate moves downwards after the expansion bag is shortened, the through grooves are exposed, the follow-up heat dissipation operation is facilitated, and in addition, the water in the metal long box can play a role in assisting in heat dissipation and cooling.

(2) According to the cabinet, the supporting adjusting module, the inhaul cable and the moving plate are installed, when the moving plate moves upwards to block the through groove, the supporting height of the supporting adjusting module can be increased, the cabinet body is lifted, soaking is avoided, and after the moving plate moves downwards and the supporting height of the supporting adjusting module is reduced, the fixed base, the supporting base and the spring are matched, so that the supporting stability of the cabinet body can be enhanced.

(3) By installing the metal long box and the waterproof membrane, the invention can lift the long lath by freezing water in the metal long box when freezing in winter, thereby moving the moving plate upwards again, having the effects of plugging and insulating the through groove and reducing the interference of external freezing.

(4) According to the invention, the waterproof membrane and the heat-insulating cover are arranged, when the water body in the metal long box is not frozen, the heat-insulating cover is in a collapsing state, and further the surface of the metal long box is exposed outside, so that a normal water-cooling effect can be achieved, when the water body is frozen, the waterproof membrane expands, and further the heat-insulating cover is stretched to cover the surface of the metal long box and be matched with the heat-insulating layer, so that the heat in the working process of the interior of the cabinet body is prevented from being transferred to the ice blocks, the continuous expansion of the ice blocks is kept, and further the continuous blocking heat-insulating effect is achieved in a low-temperature environment in winter.

(5) By installing the net layer, the nanofiber aerogel has better toughness and elasticity, so that an elastic net structure can be formed, the cutting effect of the surface of an ice block on the waterproof film 22 is prevented, and the integrity of the waterproof film is further ensured.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a bottom view of the present invention;

FIG. 3 is a partial structural view of the supporting and adjusting module, the gas-permeable net plate and the moving plate according to the present invention;

FIG. 4 is a schematic view of an installation structure of a breathable net plate and a breathable film according to the present invention;

FIG. 5 is a schematic view of the internal structure of the waterproofing membrane of the present invention;

FIG. 6 is a schematic view of the internal structure of the adjusting net box of the present invention;

FIG. 7 is a schematic view of the present invention showing the expansion of the expansion bag inside the adjustment net box;

FIG. 8 is a schematic view of the internal icing expansion lifting state of the metal long box inside the adjusting net box according to the present invention;

FIG. 9 is a schematic view showing a state of a change in the supporting height of the supporting adjustment module according to the present invention;

fig. 10 is a schematic view of the installation structure of the metal long box and the waterproof membrane of the present invention.

The reference numbers in the figures illustrate:

1. a cabinet body; 2. an inner cabinet door; 3. an outer cabinet door; 4. a gas-permeable net plate; 5. a fan; 6. a through groove; 7. moving the plate; 8. a gas permeable membrane; 9. adjusting the net box; 10. a support adjustment module; 11. a central shaft; 12. a vertical plate; 13. a fixed base; 14. an auxiliary base; 15. a cable; 16. a spring; 17. a strip plate; 18. a spacer block; 19. expanding the bag; 20. a metal long box; 21. connecting plates; 22. a water-resistant film; 23. a mesh layer; 24. a water-barrier film; 25. a heat-insulating layer; 26. and (3) outer film.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

Example 1:

referring to fig. 1-3 and 6-7, a self-adjusting waterproof, heat-dissipating and anti-freezing power distribution cabinet includes a cabinet body 1, a ventilating net plate 4 and an adjusting net box 9, wherein a through groove 6 is formed at the bottom of the cabinet body 1, the ventilating net plate 4 is fixed on the inner wall of the cabinet body 1, the cross-sectional area of the ventilating net plate 4 is larger than that of the through groove 6, and the adjusting net box 9 is installed inside the ventilating net plate 4 in a penetrating manner;

the inner wall of the adjusting net box 9 is provided with symmetrically arranged expansion bags 19, the expansion bags 19 are made of elastic yarn fabric, the expansion bags 19 are filled with expansion soil, the bottom wall of the adjusting net box 9 is provided with a metal long box 20, the metal long box 20 is positioned in the middle of the expansion bags 19, the bottom wall of the adjusting net box 9 is provided with a connecting plate 21 in a penetrating and sliding mode, and the top of the connecting plate 21 is provided with a strip plate 17;

the bottom of the connecting plate 21 is connected with a movable plate 7, the movable plate 7 is located below the through groove 6 and is the same as the sectional area of the through groove 6, the heat insulation cotton is filled in the movable plate 7, the enclosure is installed at the top of the movable plate 7, the enclosure frame is installed on the inner wall of the through groove 6, and the width of the enclosure frame is larger than that of the enclosure frame.

Specifically, the enclosure and the enclosure frame are both made of waterproof silica gel;

when the self-adjusting waterproof heat dissipation operation is carried out, the moving plate 7 is positioned below the through groove 6, and the bottom of the cabinet body 1 is in an open state, so that the maximum ventilation and heat dissipation operation can be realized;

when the humidity in the environment of the cabinet body 1 is high, namely, when the cabinet body is in a rainy or flood season or a plum rainy season, in order to avoid interference of external moisture on electric elements inside the cabinet body 1, at the moment, the moisture enters the inside of the adjusting net box 9 through the through groove 6, and then the swelling soil inside the swelling bag 19 is swelled and deformed, so that the swelling bag 19 is swelled and deformed, and the strip plate 17 is lifted, and the moving plate 7 connected through the connecting plate 21 moves upwards until the enclosure at the top of the moving plate 7 contacts with the enclosure frame on the inner wall of the through groove 6, so that the moving plate 7 can seal the through groove 6, and further prevent external moisture from entering;

in the process, the long metal box 20 plays a role in inhibiting the transverse deformation of the expansion bag 19, so that the expansion bag 19 has larger deformation capacity when longitudinally extending;

when the internal temperature of the cabinet body 1 is higher, the heat is transmitted to the expansion bag 19 through the adjusting net box 9, and then the effect of drying is played to the expansive soil in the water-swelling state, the expansive soil is collapsed at the moment, so that the long slat 17 in the inside moves down, and then the movable plate 7 moves down, the through groove 6 is exposed, a channel is provided for the heat dissipation operation inside the cabinet body 10, in addition, a water body is stored in the inside of the long metal box 20, and the heat in the cabinet body 1 is transmitted to the water body in the inside through the long metal box 20 and also plays a corresponding water cooling effect from the side face.

Referring to fig. 2, 3 and 9, four supporting and adjusting modules 10 are installed at four corners of the bottom of the cabinet 1, four groups of supporting and adjusting modules 10 are located outside the through slot 6, each supporting and adjusting module 10 includes a central shaft rod 11, vertical plates 12, a fixed base 13 and an auxiliary base 14, two groups of vertical plates 12 are installed on the surface of the central shaft rod 11, the tail end of one group of vertical plates 12 is connected with the bottom of the cabinet 1 through a shaft, the tail end of the other group of vertical plates 12 is connected with the fixed base 13 through a shaft, the auxiliary base 14 is installed on the surface of the central shaft rod 11, the auxiliary base 14 is located between the two groups of vertical plates 12, a rubber pad is installed at the bottom of the auxiliary base 14, a spring 16 is installed on the surface of one side of the other group of vertical plates 12 close to the inside, a cable 15 is installed on the surface of the central shaft rod 11, the tail end of the cable 15 is connected with the bottom of the movable plate 7, spacing blocks 18 are installed at the bottom of the long slat 17, and the spacing blocks 18 have the same length as the long slat 17.

Specifically, the fixed base 13 is fixedly connected to the ground, and plays a role in anchoring;

when the moving plate 7 moves upwards, the central shaft rod 11 is driven to move under the action of the inhaul cable 15, so that the included angle between the two groups of vertical plates 12 in the inclined included angle state is increased, the height of the supporting and adjusting module 10 is increased, the height of the bottom of the cabinet body 1 from the ground is increased, the possibility of contact between the bottom of the cabinet body 1 and accumulated water on the ground can be reduced, and the possibility of water body soaking of the cabinet body 1 is reduced;

when the movable plate 7 descends, the central shaft rod 11 is under the dead weight of the cabinet body 1, and the vertical plate 12 connected with the bottom of the cabinet body 1 moves downwards, so that the auxiliary base 14 on the surface of the central shaft rod 11 contacts the ground, and is matched with the fixed base 13 to strengthen the supporting effect of the supporting adjusting module 10 on the cabinet body 1, and the rubber pad and the spring 16 can play a damping effect to a certain extent, thereby ensuring the installation stability of the cabinet body 1.

When the vertical plate 12 connected with the bottom of the cabinet body 1 moves downwards, the group of vertical plates 12 is in contact with the spring 16 on the surface of the other group of vertical plates 12, and at the moment, the spring 16 is compressed and deformed to play a role in preventing the vertical plates 12 from moving downwards continuously, so that the included angle between the two groups of vertical plates 12 is controlled within the range of 30-50 degrees, and the two groups of vertical plates 12 are prevented from being excessively close to each other.

Referring to fig. 6, 8 and 10, the height of the metal long box 20 is larger than that of the expansion bag 19, and the top of the metal long box 20 is connected with a waterproof film 22 through waterproof glue in a sealing manner.

Specifically, when the external environment temperature is lower than zero in winter, the freezing phenomenon can be generated, and the moving plate 7 loses the upward moving and lifting effects of the expansion bag 19, so that the through groove 6 is in an open state, and the safety of the circuit in the cabinet body 1 is damaged;

consequently when the subzero state, the logical groove 6 of outside ambient temperature transmits to the long box 20 of metal in, and then makes the water in the long box 20 of metal freeze, because the volume expansion after freezing and then play the lift effect to the rectangular board 17 of top, and then can be with the lifting of movable plate 7 and with leading to the groove 6 shutoff through even board 21, and because the inside packing of movable plate 7 has the cotton that separates the temperature, can play the effect of preventing frostbite, and then when guaranteeing that this cabinet body 1 uses in the subzero environment in winter, also can not receive the interference.

Referring to fig. 5, the waterproof film 22 is composed of a mesh layer 23, a water-stop film 24, a heat-insulating layer 25 and an outer film 26, the mesh layer 23 is installed at the top of the long metal box 20, the water-stop film 24 is installed at the top of the mesh layer 23, the heat-insulating layer 25 is installed at the top of the water-stop film 24, the outer film 26 is installed at the top of the heat-insulating layer 25, anti-slip patterns are arranged on the surface of the outer film 26, the mesh layer 23 is made of nanofiber aerogel, the heat-insulating layer 25 is made of elastic cotton, a heat-insulating cover is sleeved on the surface of the long metal box 20, the bottom of the heat-insulating cover is fixedly connected with the bottom end of the surface of the long metal box 20, and the top of the heat-insulating cover is connected with the surface of the waterproof film 22 through nylon wires.

Specifically, the heat-preservation cover is made of delinted wool, and has elasticity and heat preservation performance, and the elastic cotton has good elasticity and heat preservation performance;

the nanofiber aerogel has better toughness and elasticity, so that an elastic net structure can be formed, the cutting effect of the surface of an ice block on the waterproof membrane 22 is prevented, and the integrity of the waterproof membrane 22 is further ensured;

the waterproof membrane 24 is made of rubber material, has elasticity, and can prevent the water inside the metal long box 20 from overflowing;

when the waterproof membrane 22 is subjected to the expansion action of the ice body of the metal long box 20, the heat-insulating cover in a collapsed state is stretched under the action of the nylon wire, so that the metal long box 20 is externally covered, and the heat-insulating cover is matched with the heat-insulating layer 25, so that the heat inside the cabinet body 1 is difficult to melt the water body in an icing state inside the metal long box 20 through the heat-insulating layer 25, and the continuity of the plugging action of the moving plate 7 is ensured;

the anti-slip texture on the surface of the outer membrane 26 enhances the static friction between the waterproof membrane 22 and the elongated strip 17 when inflated.

Referring to fig. 4, the top of the gas permeable net plate 4 is provided with a groove, a molecular sieve is installed inside the groove, and a gas permeable film 8 is installed on the top of the molecular sieve.

Specifically, when external water vapor provides an expansion effect on the adjusting net box 9 through the through groove 6 and the breathable net plate 4, part of the water vapor passes through the molecular sieve, the molecular sieve plays a drying role at the moment, and un-dried gas is intercepted by the breathable film and then gathered and dripped to the molecular sieve, so that a drying supplementing effect is achieved.

Referring to fig. 1, 2 and 4, two sets of symmetrically arranged fans 5 are installed inside the cabinet body 1, the fans 5 are located above the ventilating mesh plate 4, the inner cabinet door 2 is installed inside the cabinet body 1 through hinges, and the outer cabinet door 3 is installed on the front side of the cabinet body 1 through hinges.

Specifically, fan 5 can assist and play the forced air cooling heat dissipation, and the inside of interior cabinet door 2 and outer cabinet door 3 is equipped with different safety locks respectively, and then has dual safeguard effect, avoids irrelevant personnel to open cabinet body 1, influences the normal clear of the inside distribution operation of the cabinet body 1.

The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should also be able to cover the technical scope of the present invention by the equivalent or modified embodiments and the modified concepts of the present invention.

Claims

1. The utility model provides a self-interacting type is waterproof, and frost-proof switch board of heat dissipation, includes the cabinet body (1), ventilative otter board (4) and adjusts net box (9), its characterized in that: a through groove (6) is formed in the bottom of the cabinet body (1), a breathable net plate (4) is fixed on the inner wall of the cabinet body (1), the cross section area of the breathable net plate (4) is larger than that of the through groove (6), and an adjusting net box (9) penetrates through the interior of the breathable net plate (4);

expansion bags (19) which are symmetrically arranged are installed on the inner wall of the adjusting net box (9), the expansion bags (19) are made of elastic yarn fabric, expansion soil is filled in the expansion bags (19), a metal long box (20) is installed on the bottom wall of the adjusting net box (9), the metal long box (20) is located in the middle of the expansion bags (19), a connecting plate (21) is installed on the bottom wall of the adjusting net box (9) in a penetrating and sliding mode, and a long strip plate (17) is installed on the top of the connecting plate (21);

the bottom of even board (21) is connected with movable plate (7), movable plate (7) are located logical below of groove (6) and the same with the sectional area that leads to groove (6), the inside packing of movable plate (7) has the temperature-isolating cotton, the enclosure is installed at the top of movable plate (7), the inner wall that leads to groove (6) is installed and is enclosed the frame, and encloses the width of frame and be greater than the enclosure.

2. The self-adjusting waterproof, heat-dissipating and anti-freezing power distribution cabinet according to claim 1, characterized in that: the utility model discloses a cabinet body, including the cabinet body, the bottom four corners of the cabinet body (1) all install and support adjusting module (10), four groups support adjusting module (10) and be located the outside that leads to groove (6), support adjusting module (10) including central axostylus axostyle (11), riser (12), unable adjustment base (13) and auxiliary base (14), the surface mounting of central axostylus axostyle (11) has two sets of symmetrical arrangement's riser (12), one of them is a set of the tail end of riser (12) is connected with the bottom of the cabinet body (1) through the axle piece, and another group the tail end of riser (12) is connected with unable adjustment base (13) through the axle piece, the surface mounting of central axostylus axostyle (11) has auxiliary base (14), and auxiliary base (14) are located the centre of two sets of riser (12), the rubber pad is installed to the bottom of auxiliary base (14).

3. The self-adjusting waterproof, heat-dissipating and anti-freezing power distribution cabinet according to claim 2, characterized in that: and a spring (16) is arranged on the surface of one side, close to the inside, of the other group of vertical plates (12), a stay cable (15) is arranged on the surface of the central shaft lever (11), and the tail end of the stay cable (15) is connected with the bottom of the movable plate (7).

4. The self-adjusting waterproof, heat-dissipating and anti-freezing power distribution cabinet according to claim 1, characterized in that: the height of the long metal box (20) is larger than that of the expansion bag (19), and the top of the long metal box (20) is connected with a waterproof film (22) in a sealing mode through waterproof glue.

5. The self-adjusting waterproof, heat-dissipating and anti-freezing power distribution cabinet according to claim 4, characterized in that: the utility model discloses a long box of metal, including water-proof membrane (22), metal long box (20), adventitia (26), heat preservation (25), nylon yarn, waterproof membrane (23), water-proof membrane (24), heat preservation (25) and adventitia (26) are constituteed to waterproof membrane (22), stratum reticulare (23) are installed at the top of long box of metal (20), water-proof membrane (24) are installed at the top of stratum reticulare (23), heat preservation (25) are installed at the top of water-proof membrane (24), adventitia (26) are installed at the top of heat preservation (25), the surface of adventitia (26) is equipped with anti-skidding line, the heat preservation cover has been cup jointed on the surface of long box of metal (20), and the bottom fixed connection on the bottom of heat preservation cover and long box of metal (20) surface, the surface connection of nylon yarn and waterproof membrane (20) is passed through at the top of heat preservation cover.

6. The self-adjusting waterproof, heat-dissipating and anti-freezing power distribution cabinet according to claim 5, characterized in that: the net layer (23) is made of nano-fiber aerogel, and the heat-insulating layer (25) is made of elastic cotton.

7. The self-adjusting waterproof, heat-dissipating and anti-freezing power distribution cabinet according to claim 1, characterized in that: the top of ventilative otter board (4) is equipped with the recess, the internally mounted of recess has the molecular sieve, ventilated membrane (8) are installed at the top of molecular sieve.

8. The self-adjusting waterproof, heat-dissipating and anti-freezing power distribution cabinet according to claim 1, characterized in that: the bottom of the strip plate (17) is provided with symmetrically arranged spacing blocks (18), and the spacing blocks (18) are as long as the strip plate (17).

9. The self-adjusting waterproof, heat-dissipating and anti-freezing power distribution cabinet according to claim 1, characterized in that: the cabinet body (1) is internally provided with two groups of symmetrically arranged fans (5), and the fans (5) are positioned above the breathable net plate (4).

10. The self-adjusting waterproof, heat-dissipating and anti-freezing power distribution cabinet according to claim 1, characterized in that: the cabinet is characterized in that an inner cabinet door (2) is installed inside the cabinet body (1) through hinges, and an outer cabinet door (3) is installed on the front side of the cabinet body (1) through hinges.