Air chamber cooling device of environment-friendly inflatable cabinet

Abstract

The utility model discloses an air chamber cooling device of an environment-friendly gas-insulated switchgear. The air chamber cooling device comprises a box body, a heat absorption aluminum sheet assembly, a heat dissipation aluminum sheet assembly and a heat dissipation hollow aluminum pipe assembly. A cavity is formed in the box body, an opening is formed in the bottom of the box body, the box body is installed on the top of an air chamber of the gas-insulated switchgear in a sealed mode, and the cavity is communicated with the air chamber through the opening; the heat absorption aluminum sheet assembly is installed on the inner wall of the box body, and the heat dissipation aluminum sheet assembly is installed on the outer wall of the box body. The heat dissipation hollow aluminum pipe assembly penetrates through a cavity of the box body and is connected with the box body in a sealed mode. The heat dissipation hollow aluminum pipe assembly is arranged in an up-down inclined mode, the two ends of the heat dissipation hollow aluminum pipe assembly are bent in opposite directions, the lower end is bent downwards to form an air inlet, and the upper end is bent upwards to form an air outlet. The LED lamp has the advantages of simple structure, good heat dissipation effect and the like.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of environment-friendly inflatable cabinets, and in particular to an air chamber cooling device of an environment-friendly inflatable cabinet. Background Art

[0002] At present, the air chamber of the environmentally friendly inflatable cabinet uses N2 gas as the insulating medium to concentrate and seal primary components such as circuit breakers, three-position switches and busbars in a low-pressure inflatable box, so as to isolate the primary main wiring part from the external environment. It has the advantages of small size, good safety and high reliability. Since the primary wiring part of the inflatable cabinet is sealed in the inflatable box, compared with ordinary switch cabinets, the energy is too concentrated during operation, the heat dissipation environment is poor, and the temperature rise is too high, which directly affects the safe and stable operation of the equipment. If it is not controlled, the overheating will continue to accumulate, causing the performance of adjacent insulation components to deteriorate, and even breakdown to cause accidents. Therefore, temperature rise control is an important link in production and manufacturing, and the structural design and manufacturing process of the product have an important impact on it. Therefore, in environmentally friendly gas-insulated metal-enclosed switchgear, how to effectively control its temperature and solve its heat dissipation problem will become a difficult problem. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in view of the technical problems existing in the prior art, the utility model provides an air chamber cooling device of an environment-friendly inflatable cabinet with a simple structure and good heat dissipation performance.

[0004] In order to solve the above technical problems, the technical solution proposed by the utility model is:

[0005] An air chamber cooling device for an environmentally friendly inflatable cabinet comprises a box body, a heat-absorbing aluminum sheet assembly, a heat-dissipating aluminum sheet assembly and a heat-dissipating hollow aluminum tube assembly; the box body has a cavity inside and an opening at the bottom, the box body is sealed and installed on the top of the air chamber of the inflatable cabinet, and the cavity is connected to the air chamber through the opening; the heat-absorbing aluminum sheet assembly is installed on the inner wall of the box body, and the heat-dissipating aluminum sheet assembly is installed on the outer wall of the box body; the heat-dissipating hollow aluminum tube assembly penetrates the cavity of the box body and is sealed and connected to the box body; the heat-dissipating hollow aluminum tube assembly is arranged tilted up and down and the two ends are bent in opposite directions, wherein the lower end is bent downward to form an air inlet, and the upper end is bent upward to form an air outlet.

[0006] As a further improvement of the above technical solution:

[0007] The heat-absorbing aluminum sheet assembly comprises a first heat-absorbing aluminum sheet and a second heat-absorbing aluminum sheet which are located on the front and rear inner walls of the box and are arranged vertically. A plurality of first through holes and a second through holes are respectively formed on the first heat-absorbing aluminum sheet and the second heat-absorbing aluminum sheet.

[0008] The heat sink aluminum fin assembly includes an upper heat sink aluminum fin, a first heat sink aluminum fin and a second heat sink aluminum fin. The upper heat sink aluminum fin is located on the top of the box, and the first heat sink aluminum fin and the second heat sink aluminum fin are respectively located on the front and rear outer walls of the box.

[0009] The upper heat dissipation aluminum fin, the first heat dissipation aluminum fin and the second heat dissipation aluminum fin are respectively provided with an upper heat dissipation hole, a first heat dissipation hole and a second heat dissipation hole.

[0010] The box body, the heat-absorbing aluminum sheet assembly and the heat-dissipating aluminum sheet assembly are an integrated structure.

[0011] A plurality of detachable lifting rings are installed on the bottom plate of the box body.

[0012] The box body is a box body made of aluminum alloy profiles.

[0013] A plurality of mounting holes are arranged around the bottom plate of the box body, and a plurality of welding studs corresponding to the plurality of mounting holes are welded around the inspection hole of the air chamber, and the welding studs are inserted into the corresponding mounting holes and fastened by nuts.

[0014] The bottom of the mounting hole is formed into a small boss to cover the welding slag at the bottom of the welding stud.

[0015] The bottom plate of the box body is provided with a sealing groove, and a sealing ring is installed in the sealing groove to realize the sealing installation of the box body on the top of the air chamber of the inflatable cabinet.

[0016] Compared with the prior art, the advantages of the utility model are:

[0017] The air chamber cooling device of the environmentally friendly inflatable cabinet of the utility model controls the temperature inside the air chamber within a normal range through heat conduction of the heat-absorbing aluminum sheet assembly, heat radiation of the heat-dissipating aluminum sheet assembly, and heat convection of the heat-dissipating aluminum sheet assembly; the above-mentioned overall structure is simple and has good heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a diagram showing an embodiment of the cooling device of the utility model in a specific application.

[0019] Figure 2 It is a schematic diagram of the installation of the cooling device of the utility model in a specific application.

[0020] Figure 3 It is a schematic structural diagram of a cooling device of the utility model in an embodiment.

[0021] Figure 4 This is a bottom view of the cooling device of the utility model in an embodiment.

[0022] Figure 5 It is a top view of the cooling device of the utility model in an embodiment.

[0023] Figure 6 It is a side structural diagram of the cooling device of the utility model in an embodiment.

[0024] Figure 7 This is an internal view of the cooling device of the utility model in an embodiment.

[0025] Figure 8 This is a structural diagram of a heat dissipation hollow aluminum tube in an embodiment of the present utility model.

[0026] Legend: 1. Box body; 2. Lifting ring; 3. Mounting hole; 4. Bottom plate; 5. Sealing ring; 6. Inspection hole; 7. Welding stud; 8. Air chamber; 9. Upper heat dissipation aluminum sheet; 10. Upper heat dissipation hole; 11. Heat dissipation hollow aluminum tube; 12. Internal threaded hole; 13. Small boss; 14. Sealing groove; 15. First heat-absorbing aluminum sheet; 16. Second heat-absorbing aluminum sheet; 17. First through hole; 18. Second through hole; 19. First heat dissipation aluminum sheet; 20. Second heat dissipation aluminum sheet; 21. First heat dissipation hole; 22. Second heat dissipation hole; 23. Outer annular surface; 24. Inner annular surface; 25. Outer wall; 26. Inner wall. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] like Figure 1-2 As shown, the air chamber cooling device of the environmentally friendly inflatable cabinet of the utility model embodiment comprises a box body 1, a heat-absorbing aluminum sheet assembly, a heat-dissipating aluminum sheet assembly and a heat-dissipating hollow aluminum tube assembly; the box body 1 is installed and fixed on the top of the air chamber 8 of the inflatable cabinet, communicates with the air chamber, and covers the inspection hole 6 on the top of the air chamber 8. The inspection hole 6 is set in a rectangular shape, and the bottom plate 4 of the box body 1 is rectangular, and its size is larger than that of the inspection hole 6, so that the bottom plate 4 of the box body 1 can completely cover the inspection hole 6;

[0029] The bottom plate 4 of the box body 1 is provided with four internal threaded holes 12 for installing the detachable lifting ring 2, so as to improve the convenience of installing and removing the box body 1, thereby improving the operating efficiency;

[0030] The bottom plate 4 of the box body 1 is provided with a sealing groove 14, and a sealing ring 5 is installed in the sealing groove 14. When the sealing ring 5 is installed, it fits into the inspection hole 6 of the air chamber 8, so as to further improve the air tightness of the air chamber 8 of the inflatable cabinet and avoid air leakage in the air chamber 8;

[0031] The bottom plate 4 of the box body 1 is provided with a plurality of mounting holes 3 along its sides, and a small boss 13 is formed at the bottom of the mounting hole 3. A plurality of welding studs 7 corresponding to the plurality of mounting holes 3 are welded around the inspection hole 6 of the air chamber 8, and the welding studs 7 are inserted into the corresponding mounting holes 3. The small boss 13 of the mounting hole 3 can better cover the welding slag at the bottom of the welding stud 7, so that it can better fit the top plate of the air chamber 8, and can be fastened by nuts (not shown), so that the box body 1 can be installed on the top of the air chamber 8.

[0032] The box 1 is an aluminum alloy profile, which is installed on the air chamber 8 as a whole by welding and machining, so that the air chamber 8 increases the heat dissipation surface area. The thermal conductivity of aluminum is 238kcal / mh℃, so it has good heat dissipation performance. As the material of the box 1, it can effectively improve the heat dissipation effect of the box 1. The inside and outside of the box 1 (except the sealing position) are evenly coated with black heat dissipation and cooling paint (environmentally friendly water-based two-component polyurethane acrylic black paint) to enhance the heat radiation capacity and improve the heat dissipation power.

[0033] The heat-absorbing aluminum sheet assembly includes a plurality of first heat-absorbing aluminum sheets 15 and second heat-absorbing aluminum sheets 16 on the front and rear inner walls of the cavity of the box body 1 and perpendicular to the end surface of the bottom plate 4 of the box body 1. The first heat-absorbing aluminum sheets 15 and the second heat-absorbing aluminum sheets 16 each have three groups, which are evenly distributed between the groups, and there is a certain interval between adjacent groups. The first heat-absorbing aluminum sheets 15 and the second heat-absorbing aluminum sheets 16 are provided with a plurality of circular first through holes 17 and second through holes 18 to increase the heat convection effect between the heat-absorbing aluminum sheets, so that the heat is evenly absorbed by the heat-absorbing aluminum sheets, thereby improving the heat absorption capacity inside the box body 1.

[0034] The heat sink aluminum fin assembly includes a plurality of first heat sink aluminum fins 19 and second heat sink aluminum fins 20 arranged on the front and rear outer walls of the box body 1 relative to the first heat absorbing aluminum fins 15 and the second heat absorbing aluminum fins 16, which are perpendicular to the end surface of the bottom plate 4 of the box body 1, and an upper heat sink aluminum fin 9 on the top of the box body. Each heat sink aluminum fin is set as a whole group of heat sink aluminum fins, and the heat sink aluminum fins are evenly distributed and have the same interval. A plurality of upper heat dissipation holes 10, first heat dissipation holes 21 and second heat dissipation holes 22 are respectively opened on the upper heat sink aluminum fin 9, the first heat sink aluminum fin 19 and the second heat sink aluminum fin 20 to enhance the heat convection effect between the heat sink aluminum fins and the external environment. The upper heat sink aluminum fins 9, the first heat sink aluminum fins 19 and the second heat sink aluminum fins 20 increase the contact area of ​​the box body 1 with the external environment, and further enhance the heat dissipation effect of the box body 1. The first heat absorbing aluminum fins 15, the second heat absorbing aluminum fins 16, the upper heat sink aluminum fins 9, the first heat sink aluminum fins 19, and the second heat sink aluminum fins 20 are an integrated structure with the box body 1.

[0035] The heat dissipation hollow aluminum tube assembly includes a plurality of heat dissipation hollow aluminum tubes 11 welded in the middle of the box body 1, and the heat dissipation hollow aluminum tubes 11 penetrate the box body 1 in a horizontal direction, and a seal is formed between the heat dissipation hollow aluminum tubes 11 and the box body 1. The heat dissipation hollow aluminum tubes 11 are inclined, and the upper and lower ends are bent in opposite directions, wherein the lower end is bent downward to form an air inlet, and the upper end is bent upward to form an air outlet; in this way, the upper end surface of the heat dissipation hollow aluminum tube 11 is higher than the lower end surface, forming a height difference, thereby improving the air flow efficiency in the heat dissipation hollow aluminum tube 11 in the cavity of the box body 1, the contact area between the outer annular surface 23 of the heat dissipation hollow aluminum tube 11 and the hot gas in the box body 1, and the contact area between the inner annular surface 24 of the heat dissipation hollow aluminum tube 11 and the external cold air, thereby increasing the heat exchange efficiency of the inner and outer annular surfaces of the heat dissipation hollow aluminum tube 11, so that it forms a cycle, and the heat dissipation efficiency is higher. The heat dissipation hollow aluminum tubes 11 are arranged in a staggered manner in the up and down directions so as to reasonably increase the number of the heat dissipation hollow aluminum tubes 11, so that the rising hot gas can contact the heat dissipation hollow aluminum tubes 11 more fully, thereby increasing the total contact area between the outer annular surface 23 of the heat dissipation hollow aluminum tube 11 and the hot gas in the box body 1, and the total contact area between the inner annular surface 24 of the heat dissipation hollow aluminum tube 11 and the external cold air, thereby increasing the heat exchange efficiency of the inner and outer annular surfaces of the heat dissipation hollow aluminum tube 11.

[0036] Working principle: When the inflatable cabinet is operating normally and passing the rated current, the inside of the air chamber 8 begins to heat up and generate heat. According to the principle of "hot air rises", the high-temperature N2 gas will rise from the air chamber 8 to the inspection hole 6 to the box body 1 in the form of thermal convection. The first heat-absorbing aluminum sheet 15 and the second heat-absorbing aluminum sheet 16 on the inner wall of the cavity of the box body 1 absorb the heat to themselves by heat conduction, and then transfer the heat to the upper heat dissipation aluminum sheet 9, the first heat dissipation aluminum sheet 19 and the second heat dissipation aluminum sheet 20 on the outer wall of the box body 1 by heat conduction; through the process treatment of the outer wall of the box body 1: each heat dissipation aluminum sheet is provided with a heat dissipation hole to enhance the heat convection between each heat dissipation aluminum sheet and the external cold air; the box body 1 is coated with black cooling paint inside and outside to improve its own heat radiation capacity to the external environment, so that the heat absorbed to the outer wall of the box body 1 can be dissipated more efficiently;

[0037] The heat generated by another part of the hot gas is absorbed by the inner annular surface 24 of the heat dissipation hollow aluminum tube 11 in the cavity of the box body 1, and then the heat is transferred to the inner wall 26 by the outer wall 25 of the inner annular surface 24. After the air in the inner wall 26 of the heat dissipation hollow aluminum tube 11 is heated, a pressure difference is generated between the outer annular surface 23 and the inner annular surface 24 of the heat dissipation hollow aluminum tube 11, so that the air in the heat dissipation hollow aluminum tube 11 forms convection. The heat dissipation hollow aluminum tube 11 is horizontally and tiltedly welded to the box body 1, that is, a large height difference is formed at the upper and lower ends, so that the air convection effect in the heat dissipation hollow aluminum tube 11 is more obvious. The hot air on the inner ring surface 24 of the heat dissipation hollow aluminum tube 11 can more effectively transfer the heat to the inner wall 26 of the outer ring surface 23 of the heat dissipation hollow aluminum tube 11 on the outer wall of the box body 1 through heat convection, and then transfer the heat in the inner wall 26 of the outer ring surface 23 of the heat dissipation hollow aluminum tube 11 to the outer wall 25 through heat conduction. Finally, the heat is dissipated through the outer wall 25 of the outer ring surface 23 of the heat dissipation hollow aluminum tube 11 and the external cold air through heat convection and heat radiation, thereby improving the heat exchange efficiency between the heat dissipation hollow aluminum tube 11 and the external cold air, and greatly improving the heat dissipation performance of the box body 1.

[0038] The air chamber cooling device of the environmentally friendly inflatable cabinet of the utility model controls the temperature inside the air chamber within a normal range through heat conduction of the heat-absorbing aluminum sheet assembly, heat radiation of the heat-dissipating aluminum sheet assembly, and heat convection of the heat-dissipating aluminum sheet assembly; the above-mentioned overall structure is simple and has good heat dissipation effect.

[0039] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] In this application, unless otherwise clearly specified and limited, the terms "assemble", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0042] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should be regarded as the protection scope of the utility model.

Claims

1. An air chamber cooling device for an environmentally friendly inflatable cabinet, characterized in that: The invention comprises a box (1), a heat-absorbing aluminum sheet assembly, a heat-dissipating aluminum sheet assembly and a heat-dissipating hollow aluminum tube assembly; the box (1) has a cavity inside and an opening at the bottom, the box (1) is sealed and installed on the top of the air chamber (8) of the inflatable cabinet, and the cavity communicates with the air chamber (8) through the opening; the heat-absorbing aluminum sheet assembly is installed on the inner wall of the box (1), and the heat-dissipating aluminum sheet assembly is installed on the outer wall of the box (1); the heat-dissipating hollow aluminum tube assembly penetrates the cavity of the box (1) and is sealed and connected to the box (1); the heat-dissipating hollow aluminum tube assembly is arranged up and down with its two ends bent in opposite directions, wherein the lower end is bent downward to form an air inlet, and the upper end is bent upward to form an air outlet.

2. The air chamber cooling device of the environmentally friendly inflatable cabinet according to claim 1 is characterized in that: The heat absorbing aluminum sheet assembly comprises a first heat absorbing aluminum sheet (15) and a second heat absorbing aluminum sheet (16) which are located on the front and rear inner walls of the box body (1) and are arranged vertically, and a plurality of first through holes (17) and second through holes (18) are respectively provided on the first heat absorbing aluminum sheet (15) and the second heat absorbing aluminum sheet (16).

3. The air chamber cooling device of the environmentally friendly inflatable cabinet according to claim 2 is characterized in that: The heat sink aluminum fin assembly comprises an upper heat sink aluminum fin (9), a first heat sink aluminum fin (19) and a second heat sink aluminum fin (20); the upper heat sink aluminum fin (9) is located at the top of the box body (1); and the first heat sink aluminum fin (19) and the second heat sink aluminum fin (20) are respectively located at the front and rear outer walls of the box body (1).

4. The air chamber cooling device of the environmentally friendly inflatable cabinet according to claim 3 is characterized in that: The upper heat dissipation aluminum fin (9), the first heat dissipation aluminum fin (19) and the second heat dissipation aluminum fin (20) are respectively provided with an upper heat dissipation hole (10), a first heat dissipation hole (21) and a second heat dissipation hole (22).

5. The air chamber cooling device of the environmentally friendly inflatable cabinet according to any one of claims 1 to 4, characterized in that: The box body (1), the heat-absorbing aluminum sheet assembly and the heat-dissipating aluminum sheet assembly are an integrated structure.

6. The air chamber cooling device of the environmentally friendly inflatable cabinet according to any one of claims 1 to 4, characterized in that: A plurality of detachable lifting rings (2) are installed on the bottom plate (4) of the box body (1).

7. The air chamber cooling device of the environmentally friendly inflatable cabinet according to any one of claims 1 to 4, characterized in that: The box body (1) is a box body made of an aluminum alloy profile.

8. The air chamber cooling device of the environmentally friendly inflatable cabinet according to any one of claims 1 to 4, characterized in that: A plurality of mounting holes (3) are arranged around the bottom plate (4) of the box body (1), and a plurality of welding studs (7) corresponding to the plurality of mounting holes (3) are welded around the inspection hole (6) of the air chamber (8), and the welding studs (7) are inserted into the corresponding mounting holes (3) and fastened by nuts.

9. The air chamber cooling device of the environmentally friendly inflatable cabinet according to claim 8, characterized in that: The bottom of the mounting hole (3) is formed into a small boss (13) to cover the welding slag at the bottom of the welding stud (7).

10. The air chamber cooling device of the environmentally friendly inflatable cabinet according to any one of claims 1 to 4, characterized in that: The bottom plate (4) of the box body (1) is provided with a sealing groove (14), and a sealing ring (5) is installed in the sealing groove (14) for realizing the sealing installation of the box body (1) on the top of the air chamber (8) of the inflatable cabinet.

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