New energy box-type substation top-mounted forced cooling heat dissipation air duct and box-type substation top cover

Abstract

The invention discloses a new energy box transformer substation top-mounted forced cooling heat dissipation air duct and a box transformer substation top cover, the new energy box transformer substation top-mounted forced cooling heat dissipation air duct comprises an air duct bottom plate, the periphery of the air duct bottom plate is connected with an air duct front wall, air duct side walls on the left side and the right side and an air duct rear wall, and an air duct air inlet is formed in the left side or the right side of the air duct front wall; the right side or the left side of the air duct rear wall is provided with an air duct outlet; the left side and the right side of the air duct bottom plate are each fixedly provided with at least one ventilation unit, and the ventilation units located on the left side and the ventilation units located on the right side are arranged in a staggered mode. The air duct is mainly used for a ventilation and heat dissipation system of the box-type substation. When in use, the air duct is arranged in the top cover of the box-type transformer substation, the air inlet is connected with the centrifugal fan, the air outlet is communicated with the outside through the opening at the side edge of the top cover, and hot air in the box-type transformer substation is pumped out by the centrifugal fan and is discharged out of the box-type transformer substation through the air duct, so that the aims of ventilation and heat dissipation are fulfilled.

Description

Technical Field

[0001] The present invention relates to the technical field of heat dissipation of box-type substations, and in particular to a new energy box-type substation top-mounted strong cooling heat dissipation air duct and a box-type substation top cover. Background Art

[0002] Box-type substation, also called prefabricated substation or prefabricated substation, is a kind of factory prefabricated indoor and outdoor compact distribution equipment that is arranged in a certain wiring scheme with high-voltage switchgear, distribution transformer and low-voltage distribution device. It combines the functions of transformer step-down and low-voltage distribution organically and installs them in a moisture-proof, rust-proof, dust-proof, rodent-proof, fire-proof, anti-theft, heat-insulated, fully enclosed and movable steel structure box. It is particularly suitable for urban network construction and transformation. It is a new type of substation that has emerged after civil substation. Box-type substation is suitable for mines, factories, enterprises, oil and gas fields and wind power stations. It replaces the original civil distribution room and distribution station and becomes a new type of complete set of transformer and distribution equipment.

[0003] The ventilation and heat dissipation system is an important part of the box-type substation. The quality of the ventilation and heat dissipation system design directly determines the shell level of the box-type substation and the scale of the electrical components that can be carried inside. Poor ventilation and heat dissipation will lead to long-term high temperature inside the box-type substation, greatly reducing the service life of the components and even causing safety accidents; however, the larger ventilation window area will bring greater pressure on the dust and water resistance of the box-type substation. Improper sealing will cause dust accumulation and water ingress inside, causing safety accidents. Too tight sealing will hinder ventilation and affect heat dissipation.

[0004] Therefore, the heat dissipation requirements and protection requirements of the box-type transformer are a pair of mutually restrictive requirements, and how to balance the design of the two is particularly important. Summary of the invention

[0005] The purpose of the present invention is to provide a new energy box transformer top-mounted strong cooling heat dissipation air duct and box transformer top cover. The new energy box transformer top-mounted strong cooling heat dissipation air duct can effectively prevent the external airflow from entering the box transformer in reverse while ensuring the smooth forward ventilation, which can greatly reduce the dust prevention measures required for the air outlet, and eliminate the regular cleaning and replacement operations of the air outlet dustproof cotton, etc. The unique internal structure has an accelerating effect on the fluid, greatly increases the air outlet volume under the condition of the same air outlet area, and enhances heat dissipation. It has a simple structure, no complex components, and is easy to process. Any size of air duct can be constructed as a reference, and it has strong applicability.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0007] A top-mounted strong cooling and heat dissipation air duct for a new energy box-type transformer comprises an air duct bottom plate, the four sides of which are respectively connected to the front wall of the air duct, the side walls of the air duct on the left and right sides, and the rear wall of the air duct, an air duct inlet is opened on the left or right side of the front wall of the air duct, and an air duct outlet is opened on the right or left side of the rear wall of the air duct;

[0008] At least one ventilation unit is fixed to the left and right sides of the air duct bottom plate, respectively, and the ventilation unit on the left side and the ventilation unit on the right side are arranged alternately;

[0009] The ventilation unit includes a long air guide plate connected to the side wall of the air duct and inclined toward the direction of the air outlet of the air duct, the end of the long air guide plate is connected to one end of the arc air guide plate, the other end of the arc air guide plate is connected to the side wall of the air duct, and the arc air guide plate is bent in the direction of the acute angle between the long air guide plate and the side wall of the air duct; a fish belly island is provided in the space enclosed by the arc air guide plate and the side wall of the air duct, the long air guide plates in the adjacent ventilation units on the same side, and the long air guide plates in the adjacent ventilation units on the opposite side, and the fish belly island is approximately an isosceles triangle, and the three sides are all arc-shaped;

[0010] The edge of the rear wall of the air duct is connected to one end of a long air guide plate, and the other end of the long air guide plate is connected to the side wall of the air duct, and the three form a triangle.

[0011] Furthermore, the air inlet and the air outlet of the air duct are opened at opposite positions on the side wall of the air duct.

[0012] Furthermore, the acute angle is ≤45°. Preferably, the acute angle is 30°.

[0013] Furthermore, the top of the fish belly island is away from the side wall of the air duct on the same side.

[0014] Furthermore, the minimum distance between the fish belly island and the arc wind guide plate is approximately equal to the minimum distance between the fish belly island and the side wall of the air duct.

[0015] Furthermore, the minimum distance between the fish belly island and the arc air guide plate is smaller than the minimum distance between the fish belly island and the long air guide plate in the adjacent ventilation unit on the opposite side.

[0016] Furthermore, the minimum distance between the fish belly island and the arc air guide plate is smaller than the minimum distance between the fish belly island and the long air guide plate in the adjacent ventilation unit on the same side.

[0017] Furthermore, a main air duct is formed between the adjacent ventilation units on the left and right, and the passage of the main air duct is connected end to end in a zigzag shape; and a branch air duct is formed between the fish belly island, the arc air guide plate and the side wall of the air duct.

[0018] The present invention also provides a box transformer top cover adopting the above-mentioned new energy box transformer top-mounted strong cooling and heat dissipation air duct.

[0019] Furthermore, the top-mounted strong cooling and heat dissipation air duct and the centrifugal fan of the new energy box transformer are arranged in the top cover of the box transformer, and the air duct inlet of the top-mounted strong cooling and heat dissipation air duct of the new energy box transformer is connected with the air outlet of the centrifugal fan.

[0020] Compared with the prior art, the outstanding effects of the top-mounted strong cooling and heat dissipation duct and the top cover of the new energy box transformer of the present invention are:

[0021] (1) The air duct is mainly used for the ventilation and heat dissipation system of the box-type substation. When in use, the air duct is placed in the top cover of the box-type substation, the air inlet is connected to the centrifugal fan, and the air outlet is connected to the outside through the opening on the side of the top cover. The centrifugal fan extracts the hot air inside the box-type substation and discharges it out of the box-type substation through the air duct, thereby achieving the purpose of ventilation and heat dissipation.

[0022] (2) The internal structure of the air duct has been specially designed. Through the combined welding of sheet metal parts, the flow of air inside the air duct has been optimized, so that the ventilation volume has been improved to a certain extent. Due to the unique one-way flow of the structure, it is difficult for the external airflow to reversely enter the box-type transformer through the air duct, so that dust prevention measures such as filter cotton at the air outlet can be cancelled. There is no need to worry about dust prevention problems inside the box-type transformer, which reduces the resistance of the air outlet, increases the ventilation volume, improves the heat dissipation capacity of the box-type transformer ventilation system, and eliminates the need for regular cleaning and replacement of dust prevention measures at the air outlet.

[0023] The top-mounted strong cooling and heat dissipation air duct and the top cover of the new energy box transformer of the present invention are further described below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is the main perspective view of the top cover of the new energy box-type transformer with top-mounted strong cooling and heat dissipation duct (equipped with 3 ventilation units).

[0025] Figure 2 This is a side perspective view of the top cover of the new energy box-type transformer with top-mounted strong cooling and heat dissipation duct (equipped with 3 ventilation units).

[0026] Figure 3 This is a schematic diagram of the internal structure of the top-mounted strong cooling air duct of the new energy box transformer (equipped with 3 ventilation units).

[0027] Figure 4 This is a schematic diagram of the airflow of the top-mounted strong cooling air duct of the new energy box transformer during forward air outlet (with 3 ventilation units).

[0028] Figure 5 This is a schematic diagram of the airflow when the top-mounted strong cooling and heat dissipation air duct of the new energy box transformer is in reverse air intake (with 3 ventilation units).

[0029] Figure 6This is a schematic diagram of the top-mounted strong cooling air duct of the new energy box transformer (equipped with 7 ventilation units).

[0030] Among them, 1-new energy box-type top-mounted strong cooling heat dissipation air duct; 2-centrifugal fan; 3-box-type top cover;

[0031] 11-air inlet of air duct, 12-air outlet of air duct, 13-side wall of air duct, 14-ventilation unit, 15-bottom plate of air duct, 16-front wall of air duct, 17-rear wall of air duct, 141-long air guide plate, 142-arc air guide plate, 143-fish belly island, 144-main air duct, 145-branch air duct, 146-acute angle. DETAILED DESCRIPTION

[0032] like Figure 1-3 As shown, a roof-mounted strong cooling and heat dissipation air duct for a new energy box transformer includes an air duct bottom plate 15, and the four sides of the air duct bottom plate 15 are respectively connected to the air duct front wall 16, the air duct side walls 13 on the left and right sides, and the air duct rear wall 17. The left side of the air duct front wall 16 is provided with an air duct inlet 11, and the right side of the air duct rear wall 17 is provided with an air duct outlet 12.

[0033] One ventilation unit 14 is fixed on the left side of the air duct bottom plate 15, and two ventilation units 14 are fixed on the right side. The ventilation units 14 on the left side and the ventilation units 14 on the right side are arranged equidistantly and staggered. In other beneficial embodiments, the number of ventilation units can be increased according to the required air duct length, such as Figure 6 The new energy box transformer adopts a top-mounted strong cooling air duct with 7 ventilation units.

[0034] The ventilation unit 14 includes a long air guide plate 141 connected to the side wall 13 of the air duct and inclined toward the direction of the air outlet 12 of the air duct, the end of the long air guide plate 141 is connected to one end of the arc air guide plate 142, the other end of the arc air guide plate 142 is connected to the side wall 13 of the air duct, and the arc air guide plate 142 is bent in the direction of the acute angle 146 between the long air guide plate 141 and the side wall 13 of the air duct; a fish belly island 143 is provided in the space enclosed by the arc air guide plate 142 and the side wall 13 of the air duct, the long air guide plate 141 in the adjacent ventilation unit 14 on the same side, and the long air guide plate 141 in the adjacent ventilation unit 14 on the opposite side, and the fish belly island 143 is approximately an isosceles triangle, one side is parallel to the long air guide plate 141, one side is approximately parallel to the side wall 13 of the air duct, and one side is parallel to the long air guide plate 141 of the next ventilation unit, and all three sides are arc-shaped. Fish Belly Island 143 is designed in the shape of a fish belly. The main body is composed of two arcs. The arc close to the main air duct is larger, and the arc close to the branch air duct is smaller, resembling a fish belly.

[0035] The acute angle 146 is 30°. The end of the arc wind guide plate 142 and the long wind guide plate 141 are connected by an arc transition to avoid noise and vibration caused by excessive wind speed.

[0036] The edge of the air duct rear wall 17 is connected to one end of a long air guide plate 141, and the other end of the long air guide plate 141 is connected to the air duct side wall 13, and the three form a triangle.

[0037] A main air duct 144 is formed between the adjacent ventilation units 14 on the left and right, and the passage of the main air duct 144 is connected end to end in a broken line shape; a branch air duct 145 is formed between the fish belly island 143, the arc air guide plate 142 and the air duct side wall 13. The airflow direction when the air is discharged in the forward direction and the airflow direction when the air is in the reverse direction are as follows: Figure 4-5 shown.

[0038] The top of the fish belly island 143 is away from the air duct side wall 13 on the same side. The minimum distance between the fish belly island 143 and the arc wind guide plate 142 is approximately equal to the minimum distance between the fish belly island 143 and the air duct side wall 13. The minimum distance between the fish belly island 143 and the arc wind guide plate 142 is less than the minimum distance between the fish belly island 143 and the long wind guide plate 141 in the adjacent ventilation unit 14 on the opposite side. The minimum distance between the fish belly island 143 and the arc wind guide plate 142 is less than the minimum distance between the fish belly island 143 and the long wind guide plate 141 in the adjacent ventilation unit 14 on the same side.

[0039] The unique structure of the fish belly island 143 makes the branch air duct formed by it, the arc air guide plate and the side wall of the air duct present a trumpet shape. The inlet of the branch air duct is narrow, and the width increases as it goes inward, and the pressure decreases. Part of the air volume of the main air duct can be sucked into the branch, achieving a diversion effect.

[0040] All parts of the top-mounted strong cooling duct of the new energy box transformer are galvanized thin plates. Figure 3 The layout shown is welded in the air duct to guide the air flow in and out of the air duct.

[0041] like Figure 3 As shown, when the fan is started, the airflow flows out in the air duct along the main air duct 144 in a positive direction. When the airflow passes through the entrance of the branch air duct 145 formed by the long air guide plate 141 and the fish belly island 143, because the branch air duct 145 is a trumpet-shaped with a narrow entrance and a wide interior, the pressure is lower than the pressure of the main air duct. A part of the airflow in the main air duct 144 will be diverted into the branch air duct 145, and merge with the main air duct 144 at the end of the branch air duct 145, and play a certain role in promoting the airflow in the main air duct. Each ventilation unit repeats the above process, so that the airflow is finally discharged from the air duct smoothly.

[0042] like Figure 4As shown, when the fan is in the off state, if the external airflow flows into the air duct in the reverse direction, when the airflow flows through the fish belly island 143, a part of the airflow will be diverted into the branch air duct 145. After the airflow in the branch air duct is guided by the arc air guide plate 142, it will reversely collide with the airflow in the main air duct 144, thereby reducing the flow rate of the airflow in the main air duct. After passing through several ventilation units, the reverse airflow flow rate can be greatly reduced, preventing external dust from flowing into the box transformer with the airflow.

[0043] A box transformer top cover adopts the above-mentioned new energy box transformer top-mounted strong cooling and heat dissipation air duct. Among them, the new energy box transformer top-mounted strong cooling and heat dissipation air duct 1 and the centrifugal fan 2 are arranged in the box transformer top cover 3, and the air duct inlet 11 of the new energy box transformer top-mounted strong cooling and heat dissipation air duct 1 is connected to the air outlet of the centrifugal fan 2. Among them, the top of the air duct front wall 16, the air duct side wall 13, the air duct rear wall 17, the long air guide plate 141, the arc air guide plate 142 and the fish belly island 143 are all connected to the inner surface of the box transformer top cover 3.

[0044] The embodiments described above are merely descriptions of preferred implementation modes of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A new energy box-type top-mounted strong cooling and heat dissipation duct, characterized by: The air duct bottom plate (15) is respectively connected to the air duct front wall (16), the air duct side walls (13) on the left and right sides, and the air duct rear wall (17); an air duct air inlet (11) is provided on the left or right side of the air duct front wall (16); and an air duct air outlet (12) is provided on the right or left side of the air duct rear wall (17); At least one ventilation unit (14) is fixed to the left and right sides of the air duct bottom plate (15), respectively, and the ventilation unit (14) located on the left side and the ventilation unit (14) located on the right side are arranged alternately; The ventilation unit (14) comprises a long air guide plate (141) connected to the air duct side wall (13) and inclined in the direction of the air duct outlet (12); the end of the long air guide plate (141) is connected to one end of a circular arc air guide plate (142); the other end of the circular arc air guide plate (142) is connected to the air duct side wall (13); the circular arc air guide plate (142) is bent in the direction of the acute angle (146) between the long air guide plate (141) and the air duct side wall (13); a fish belly island (143) is provided in the space enclosed by the circular arc air guide plate (142) and the air duct side wall (13), the long air guide plate (141) in the adjacent ventilation unit (14) on the same side, and the long air guide plate (141) in the adjacent ventilation unit (14) on the opposite side; the fish belly island (143) is approximately an isosceles triangle, and the three sides are all arc-shaped; The edge of the air duct rear wall (17) is connected to one end of a long air guide plate (141), and the other end of the long air guide plate (141) is connected to the air duct side wall (13), and the three form a triangle.

2. The top-mounted strong cooling and heat dissipation duct of the new energy box-type transformer according to claim 1 is characterized in that: The air duct air inlet (11) and the air duct air outlet (12) are opened at opposite positions on the air duct side wall (13).

3. The top-mounted strong cooling and heat dissipation duct of the new energy box transformer according to claim 1 is characterized in that: The acute angle (146) is ≤45°.

4. The top-mounted strong cooling and heat dissipation duct of the new energy box transformer according to claim 3 is characterized by: The acute angle (146) is 30°.

5. The top-mounted strong cooling and heat dissipation duct of the new energy box-type transformer according to claim 1 is characterized in that: The top of the fish belly island (143) is away from the air duct side wall (13) on the same side.

6. The top-mounted strong cooling and heat dissipation duct of the new energy box-type transformer according to claim 1 is characterized by: The minimum distance between the fish belly island (143) and the arc wind guide plate (142) is substantially equal to the minimum distance between the fish belly island (143) and the side wall (13) of the air duct.

7. The top-mounted strong cooling and heat dissipation duct of the new energy box-type transformer according to claim 1 is characterized by: The minimum distance between the fish belly island (143) and the circular arc air guide plate (142) is smaller than the minimum distance between the fish belly island (143) and the long air guide plate (141) in the adjacent ventilation unit (14) on the opposite side; the minimum distance between the fish belly island (143) and the circular arc air guide plate (142) is smaller than the minimum distance between the fish belly island (143) and the long air guide plate (141) in the adjacent ventilation unit (14) on the same side.

8. The top-mounted strong cooling and heat dissipation duct of the new energy box-type transformer according to claim 1 is characterized by: A main air duct (144) is formed between the ventilation units (14) adjacent to each other on the left and right, and the passage of the main air duct (144) is connected end to end in a broken line shape; a branch air duct (145) is formed between the fish belly island (143), the arc air guide plate (142) and the air duct side wall (13).

9. A box transformer top cover using the new energy box transformer top-mounted strong cooling and heat dissipation air duct as described in any one of claims 1 to 8.

10. The box-type transformer top cover according to claim 9, characterized in that: The new energy box transformer top-mounted strong cooling and heat dissipation air duct (1) and the centrifugal fan (2) are arranged in the box transformer top cover (3), and the air duct inlet (11) of the new energy box transformer top-mounted strong cooling and heat dissipation air duct (1) is connected to the air outlet of the centrifugal fan (2).

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