Low-noise variable-frequency air-air cooler of wind power transformer

Abstract

A cooling pipeline is arranged in a heat exchange box, epoxy aluminum foil cooling fins are arranged outside the cooling pipeline, an inner cavity of the heat exchange box is communicated with an outer air outlet box arranged on the upper portion of the heat exchange box, an outer circulating fan is arranged in the outer air outlet box, and the inner cavity of the heat exchange box is communicated with an outer air inlet box arranged on one side edge of the heat exchange box. One end of the cooling pipeline communicates with an inner air return box arranged on the other side edge of the heat exchange box, an inner circulating fan is arranged in the inner air return box, the other end of the cooling pipeline communicates with an inner air inlet box arranged on the lower portion of the heat exchange box, and the inner air inlet box and the inner air return box communicate with a wind power transformer. Motors of the inner circulating fan and the outer circulating fan are low-noise variable frequency motors, and impellers of the inner circulating fan and the outer circulating fan are low-noise impellers; sound insulation and noise reduction layers are arranged in the heat exchange box, the inner air inlet box, the inner air return box, the outer air outlet box and the outer air inlet box. The structure is simple, the height space occupancy rate can be effectively reduced, and noise reduction control can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cooler, specifically to a low-noise frequency conversion air-air cooler for wind power transformer. BACKGROUND

[0002] With the full price of offshore wind power, the large-scale development of unit is regarded as an important measure to reduce the cost of offshore wind power. As a cooling device integrating economy and reliability, air-air cooler is suitable for marine environment and is widely used in wind power industry. The market development prospect is broad, and the demand for cooler is large. The existing air-air cooler for wind power transformer is mostly mounted on the transformer, which occupies a large height space, increases the structural strength and vibration reduction requirement of the wind power transformer, and cannot meet the increasing performance requirements of simplification and low noise. SUMMARY

[0003] The utility model provides a simple structure, can effectively reduce the height space occupancy rate and the air-air cooler for low noise frequency conversion of wind power transformer of noise control.

[0004] The utility model discloses a kind of wind power transformer low-noise frequency conversion air-air cooler, including heat exchange box, it is characterized by: cooling pipeline is equipped in the heat exchange box, cooling pipeline is equipped with epoxy aluminum foil radiating fin outside, the outer air outlet box of heat exchange box inner cavity communication being arranged in the upper portion of heat exchange box, outer circulating fan is equipped in the outer air outlet box, the outer air inlet box of heat exchange box inner cavity communication being arranged in the side of heat exchange box, cooling pipeline one end communication is arranged in the inner return air box of the other side of heat exchange box, inner circulating fan is equipped in the inner return air box, cooling pipeline other end communication is arranged in the inner air inlet box of the lower portion of heat exchange box, and inner air inlet box, inner return air box are communicated to wind power transformer;The motor of inner, outer circulating fan uses low-noise frequency conversion motor, and the impeller of inner, outer circulating fan uses low-noise impeller;Heat exchange box, inner air inlet box, inner return air box, outer air outlet box, outer air inlet box are equipped with sound insulation and noise reduction layer.

[0005] Two groups of above-mentioned outer circulating fan are arranged on the outer air outlet box.

[0006] One inner circulating fan is arranged on the inner return air box.

[0007] The air inlet of inner air inlet box and inner return air box is towards wind power transformer.

[0008] The inner return air box is directly connected to the wind power transformer box, and the inner air inlet box is connected to the wind power transformer box through a metal hose.

[0009] The air inlet of outer air outlet box and outer air inlet box is towards opposite.

[0010] The outer air outlet box is connected to the heat exchange box through a receiving box, and the receiving box is connected to the heat exchange box through a large opening and connected to the outer air outlet box through a small opening.

[0011] The sound insulation and noise reduction layer is arranged in the closed box.

[0012] The sound insulation and noise reduction layer adopts the fireproof sound absorption plate material with the patent number 202021900069.7.

[0013] The cooling pipeline is a cavity on one side of the heat exchange box, and the epoxy aluminum foil radiating fin is arranged on the partition plate facing the other side.

[0014] The utility model discloses a fan transformer box body, and the fan is installed on the outer air outlet box and the inner return air box of non air inlet, and the forced cooling of the hot air in the fan transformer box body is facilitated, and the overall structure is installed on the side of the fan transformer, and the height space occupation is reduced, and the hot air in the transformer box body is sucked by the inner air inlet box, and the hot air in the transformer is completely extracted and cooled, and the low cooling efficiency of the lower hot air caused by the traditional upper cooler is avoided, and the low-noise motor and the blade are adopted, the fireproof sound absorption plate material with the sound insulation and noise reduction layer is arranged in, and the overall noise reduction effect is further improved, the closed box and the double outer circulating fan structure are adopted, the efficiency of sucking the external cold air is improved, the epoxy aluminum foil radiating fin of the cooling pipeline is alternately exchanged, and the overall heat exchange effect is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the structural schematic diagram of the utility model;

[0016] Figure 2 It is the left view of Figure 1 ;

[0017] Figure 3 It is the A-A view of Figure 1 ;

[0018] Figure 4 It is the three-dimensional structural schematic diagram of Figure 1 .

[0019] In the drawing: heat exchange box 1, closed box 2, outer air outlet box 3, outer circulating fan 4, outer air inlet box 5, inner return air box 6, inner circulating fan 7, inner air inlet box 8, cooling pipeline cavity 9, inner air path cavity 10, epoxy aluminum foil radiating fin 11. DETAILED DESCRIPTION

[0020] The further description is made in combination with the drawings.

[0021] Figures 1-3The low-noise frequency conversion air-air cooler of the wind power transformer is characterized in that: a heat exchange box 1 is divided into a cooling pipeline cavity 9 and an inner air path cavity 10 by a wall plate, the wall plate of the cooling pipeline cavity 9 towards the other side of the inner air path cavity 10 is provided with epoxy aluminum foil heat dissipation fins 11 towards the other side, the cooling pipeline cavity 9 is communicated with an outer air outlet box 3 arranged at the upper part of the heat exchange box 1 through a converging box 2 with a large lower part and a small upper part, the outer air outlet box 3 is provided with an outer circulating fan 4, the cooling pipeline cavity 9 is communicated with an outer air inlet box 5 arranged at one side edge of the heat exchange box 1, one end of the inner air path cavity 10 is communicated with an inner air return box 6 arranged at the other side edge of the heat exchange box 1, the inner air return box 6 is provided with an inner circulating fan 7, the other end of the inner air path cavity 10 is communicated with an inner air inlet box 8 arranged at the lower part of the heat exchange box 1, and the inner air inlet box and the inner air return box are communicated with the wind power transformer; the motors of the inner and outer circulating fans are low-noise frequency conversion motors, and the impellers of the inner and outer circulating fans are low-noise impellers; the heat exchange box, the inner air inlet box, the inner air return box, the outer air outlet box and the outer air inlet box are provided with sound insulation and noise reduction layers.

[0022] In the embodiment, two or more groups of outer circulating fans are arranged side by side on the outer air outlet box. One inner circulating fan is arranged on the inner air return box.

[0023] In the embodiment, the air inlets of the inner air inlet box and the inner air return box are towards the wind power transformer.

[0024] In the embodiment, the inner air return box is directly connected to the wind power transformer box, and the inner air inlet box is connected to the wind power transformer box through a metal hose to supply air.

[0025] In the embodiment, the air inlets of the outer air outlet box and the outer air inlet box are towards opposite directions.

[0026] In the embodiment, a sound insulation and noise reduction layer is arranged in the converging box. In the embodiment, the sound insulation and noise reduction layer is a fireproof sound absorption plate material with the patent number 202021900069.7 of the Yingsheng company affiliated to the parent company, and can also be replaced by various existing noise reduction and fireproof layers.

Claims

1. A low-noise variable-frequency air-air cooler for wind power transformers, comprising a heat exchange box, characterized in that: The heat exchange box is internally provided with cooling pipes, the cooling pipes are externally provided with epoxy aluminum foil radiating fins, the inner cavity of the heat exchange box is in communication with an outer air outlet box arranged at the upper portion of the heat exchange box, the outer air outlet box is internally provided with an outer circulating fan, the inner cavity of the heat exchange box is in communication with an outer air inlet box arranged at one side edge of the heat exchange box, one end of the cooling pipes is in communication with an inner return air box arranged at the other side edge of the heat exchange box, the inner return air box is internally provided with an inner circulating fan, the other end of the cooling pipes is in communication with an inner air inlet box arranged at the lower portion of the heat exchange box, the inner air inlet box and the inner return air box are communicated to the wind power transformer, the motors of the inner and outer circulating fans are low-noise frequency conversion motors, and the impellers of the inner and outer circulating fans are low-noise impellers, and the heat exchange box, the inner air inlet box, the inner return air box, the outer air outlet box and the outer air inlet box are internally provided with sound insulation and noise reduction layers.

2. The low-noise variable-frequency air-air cooler for wind power transformer according to claim 1, characterized in that: Two groups of outer circulating fans are arranged on the outer air outlet box in parallel.

3. The low-noise variable-frequency air-air cooler for wind power transformer of claim 1, characterized in that: An inner circulating fan is arranged on the inner return air box.

4. The low-noise variable-frequency air-air cooler for wind power transformer of claim 1, characterized in that: The air inlets of the inner air inlet box and the inner return air box are directed towards the wind power transformer.

5. The low-noise variable-frequency air-air cooler for wind power transformer of claim 1 or 4, characterized in that: The inner return air box is directly connected to the wind power transformer box, and the inner air inlet box is connected to the wind power transformer box through a metal hose.

6. The low noise variable frequency air-air cooler for wind power transformer of claim 1, characterized in that: The air inlets of the outer air outlet box and the outer air inlet box are directed towards each other.

7. The low-noise variable-frequency air-air cooler for wind power transformer of claim 1 or 6, characterized in that: The outer air outlet box is connected to the heat exchange box through a collecting box, the collecting box is connected to the heat exchange box through a large opening and connected to the outer air outlet box through a small opening.

8. The low-noise variable-frequency air-air cooler for wind power transformer of claim 7, characterized in that: The collecting box is internally provided with a sound insulation and noise reduction layer.

9. The low noise variable frequency air-air cooler for wind power transformer of claim 1, characterized in that: The cooling pipes are cavities on one side of the heat exchange box, and epoxy aluminum foil radiating fins are arranged on the partition plate facing the other side of the cavities.

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