Ventilation cooling device

Abstract

The invention provides a ventilation cooling device, and relates to the technical field of wind power generation. The ventilation cooling device comprises a heat exchange bin provided with a heat exchange cavity and a heat exchange inner cavity formed in the heat exchange cavity; one end of the inner sleeve is arranged in the heat exchange inner cavity, and air enters the heat exchange inner cavity through the inner sleeve; the outer sleeve is arranged on the inner sleeve in a sleeving mode, one end of the outer sleeve is arranged in the heat exchange cavity, and a first air passing channel communicating with the heat exchange cavity is formed between the inner side pipe wall of the outer sleeve and the outer side pipe wall of the inner sleeve; the air draft assembly is used for pumping air into the heat exchange inner cavity; the refrigeration assembly is used for supplying a coolant; and the heat exchange pipe is arranged in the heat exchange inner cavity, the coolant enters the heat exchange inner cavity to exchange heat with air, and the air becomes cold air after heat exchange and is exhausted after passing through the heat exchange outer cavity and the first air passing channel. The problem that in the prior art, due to the fact that the temperature in a cabin and a hub of the wind generating set is high, workers are prone to heatstroke or dehydration during operation and maintenance of the wind generating set, and the body health of the workers is affected is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to a ventilation and cooling device. Background Art

[0002] Inspecting the nacelle and hub of wind turbines or replacing damaged components is an important part of wind turbine operation and maintenance. Many wind turbines are installed in Gobi and desert areas, and high temperatures are generated in the nacelle and hub in summer. Since there is no ventilation system in the hub, even at night, when entering the hub after the wind turbine is shut down, the temperature in the hub can reach 60°C, causing symptoms such as heat stroke or dehydration for workers entering the hub for operation and maintenance, which has a great impact on the physical health and subjective judgment of the operation and maintenance personnel.

[0003] Therefore, a device is urgently needed to solve at least one of the above problems. Summary of the invention

[0004] The purpose of the embodiment of the present invention is to provide a ventilation and cooling device for solving the problem in the prior art that due to the high temperature in the cabin and hub of the wind turbine generator set, workers are prone to heatstroke or dehydration when performing wind turbine generator set operation and maintenance work, thereby affecting the health of the workers.

[0005] In order to achieve the above object, the present invention provides a ventilation and cooling device for delivering cold air to a nacelle or a hub of a wind turbine, the ventilation and cooling device comprising: The heat exchange chamber comprises a heat exchange cavity and a heat exchange inner cavity arranged in the heat exchange cavity; An inner sleeve, one end of which is arranged in the heat exchange inner cavity, and air enters the heat exchange inner cavity through the inner sleeve; An outer sleeve is sleeved on the inner sleeve, and one end of the outer sleeve is arranged in the heat exchange cavity, and a first air passage communicating with the heat exchange cavity is formed between the inner tube wall of the outer sleeve and the outer tube wall of the inner sleeve; An air extraction component is arranged in the heat exchange inner cavity and is used to extract air into the heat exchange inner cavity; A refrigeration assembly for supplying a coolant; The heat exchange tube is arranged in the heat exchange inner cavity and is connected to the coolant outlet of the refrigeration component. The coolant supplied by the refrigeration component enters the heat exchange inner cavity through the heat exchange tube and exchanges heat with the air pumped by the exhaust component. After the heat exchange, the air becomes cold air and is discharged through the heat exchange outer cavity and the first air passage. The heated coolant returns to the refrigeration component again.

[0006] Specifically, the ventilation and cooling device includes: a heat exchange sleeve, which is arranged in the heat exchange cavity to separate the heat exchange cavity to form a heat exchange inner cavity, and one end of the heat exchange sleeve is connected to the inner sleeve to introduce air into the heat exchange inner cavity.

[0007] Specifically, a plurality of support rods are fixed between the outer tube wall of the heat exchange sleeve and the cavity wall of the heat exchange chamber to support the heat exchange sleeve.

[0008] Specifically, the other end of the heat exchange sleeve serves as a cold air outlet, and the cold air formed after heat exchange enters the heat exchange cavity through the cold air outlet.

[0009] Specifically, the inner sleeve and the outer sleeve are both foldable tubes.

[0010] Specifically, the refrigeration component comprises: A compressor connected to the heat exchange outlet of the heat exchange tube, used for compressing the heated coolant discharged from the heat exchange outlet of the heat exchange tube to generate refrigerant gas; The condenser is used to exchange heat between the refrigerant gas output by the compressor and the air, and the refrigerant gas after the heat exchange becomes a liquid refrigerant; The expansion valve is connected to the heat exchange inlet of the heat exchange tube through the coolant outlet, and is used to reduce the pressure of the liquid refrigerant discharged from the condenser into coolant, and send the coolant into the heat exchange tube from the coolant outlet.

[0011] Specifically, the exhaust assembly includes an exhaust motor and exhaust blades; The exhaust motor and the exhaust blades are both arranged in the heat exchange inner cavity, and the exhaust motor is used to drive the exhaust blades to rotate so as to pump air into the heat exchange sleeve.

[0012] Specifically, the ventilation and cooling device also includes: a filter screen, which is arranged in the heat exchange sleeve and is used to filter the cold air.

[0013] Specifically, the ventilation and cooling device also includes a base, and the heat exchange chamber is movably arranged on the base.

[0014] Specifically, a pair of rotating shafts are symmetrically arranged on the base, and a pair of shaft holes corresponding to the rotating shafts are symmetrically arranged on the outer wall of the heat exchange chamber. The rotating shafts are embedded in the corresponding shaft holes so that the heat exchange chamber can rotate on the base.

[0015] The ventilation and cooling device provided by the present invention sets a heat exchange inner cavity in the heat exchange cavity of the heat exchange bin, the heat exchange cavity surrounds the heat exchange inner cavity, the inner sleeve is connected with the heat exchange inner cavity, the outer sleeve is connected with the heat exchange outer cavity, the exhaust component set in the heat exchange inner cavity pumps air into the heat exchange inner cavity through the inner sleeve, the air enters from the end of the inner sleeve exposed from the heat exchange inner cavity, flows into the heat exchange inner cavity through the inner sleeve, the heat exchange tube is set in the heat exchange inner cavity, after the air enters the heat exchange inner cavity, it exchanges heat with the coolant supplied to the heat exchange tube by the refrigeration component, the coolant absorbs the heat of the air to cool the air down to become cold air, and the heated coolant Back to the cooling component again, the cold air flows through the heat exchange inner cavity, the heat exchange cavity and the first air passage and is discharged from the end of the outer sleeve exposed from the heat exchange outer cavity. The cold air is delivered to the cabin or hub of the wind turbine through the ventilation and cooling device, ensuring that the staff can be in a good working environment under high temperature environment and protecting the physical condition of the staff when performing maintenance operations. This solves the problem in the prior art that the temperature in the cabin and hub of the wind turbine is high, which makes the staff prone to heatstroke or dehydration when performing wind turbine operation and maintenance operations, thereby affecting the health of the staff.

[0016] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings: Figure 1 is a structural schematic diagram of a ventilation and cooling device provided in an embodiment of the present invention; Figure 2 yes Figure 1 A top view of Figure 3 It is a schematic diagram of the internal structure of the heat exchange bin in the ventilation and cooling device provided in an embodiment of the present invention.

[0018] Description of Reference Numerals 1-heat exchange chamber; 2-inner casing; 3-outer casing; 4-heat exchange tube; 5-heat exchange sleeve; 6-compressor; 7-exhaust motor; 8-exhaust blades; 9-base; 10-heat exchange cavity; 11-heat exchange inner cavity; 12-support rod; 13-first air passage. DETAILED DESCRIPTION

[0019] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0020] Figure 1It is a structural schematic diagram of a ventilation and cooling device; Figure 2 yes Figure 1 A top view of Figure 3 It is a schematic diagram of the internal structure of the heat exchange chamber in the ventilation and cooling device.

[0021] like Figure 1-Figure 2 As shown, the present invention provides a ventilation and cooling device for delivering cold air to a nacelle or a hub of a wind turbine, the ventilation and cooling device comprising: The heat exchange chamber 1 comprises a heat exchange chamber 10 and a heat exchange inner chamber 11 arranged in the heat exchange chamber 10; The inner sleeve 2 has one end disposed in the heat exchange inner cavity 11, and the air enters the heat exchange inner cavity 11 through the inner sleeve 2; The outer sleeve 3 is sleeved on the inner sleeve 2, and one end of the outer sleeve 3 is disposed in the heat exchange chamber 10. The inner tube wall of the outer sleeve 3 and the outer tube wall of the inner sleeve 2 form a first air passage communicating with the heat exchange chamber 10. An exhaust assembly is disposed in the heat exchange inner cavity 11 and is used to pump air into the heat exchange inner cavity 11; A refrigeration assembly for supplying a coolant; The heat exchange tube 4 is arranged in the heat exchange inner cavity 11 and is connected to the coolant outlet of the refrigeration component. The coolant supplied by the refrigeration component enters the heat exchange inner cavity 11 through the heat exchange tube 4 to exchange heat with the air pumped by the exhaust component. After the heat exchange, the air becomes cold air and is discharged after passing through the heat exchange outer cavity and the first air passage. The heated coolant returns to the refrigeration component again.

[0022] The ventilation and cooling device provided by the present invention is provided with a heat exchange inner cavity 11 in the heat exchange cavity 10 of the heat exchange bin 1, the heat exchange cavity 10 surrounds the heat exchange inner cavity 11, the inner sleeve 2 is communicated with the heat exchange inner cavity 11, the outer sleeve 3 is communicated with the heat exchange cavity 10, the outer sleeve 3 is sleeved on the inner sleeve 2, an exhaust assembly and a heat exchange tube 4 are arranged in the heat exchange inner cavity 11, the refrigeration assembly supplies coolant to the heat exchange tube 4, the exhaust assembly extracts air into the heat exchange inner cavity 11, the air enters from one end of the inner sleeve 2 exposed to the heat exchange inner cavity 11, enters the heat exchange inner cavity 11 after passing through the inner sleeve 2, and the air enters the heat exchange inner cavity 11 and is mixed with the heat exchange tube 4. The coolant in the heat exchange tube 4 exchanges heat, and the air is cooled to become cold air. The cold air first flows into the heat exchange chamber 10, and then enters the first air passage 13 and is discharged from the end of the outer sleeve 3 exposed from the heat exchange chamber, thereby being able to deliver cold air to the nacelle or hub of the wind turbine. The temperature of the coolant rises after absorbing the heat from the air, and the heated coolant returns to the refrigeration component again, thereby solving the problem in the prior art that the temperature in the nacelle and hub of the wind turbine is high, which makes the staff prone to heatstroke or dehydration during wind turbine operation and maintenance, thereby affecting the health of the staff.

[0023] In one embodiment, Figure 3As shown, the ventilation and cooling device includes: a heat exchange sleeve 5, which is arranged in a heat exchange cavity 10 to separate the heat exchange cavity 10 to form a heat exchange inner cavity 11, and one end of the heat exchange sleeve 5 is connected to the inner sleeve 2 to introduce air into the heat exchange inner cavity 11.

[0024] The ventilation and cooling device further comprises: a plurality of support rods 12 fixed between the outer wall of the heat exchange sleeve 5 and the cavity wall of the heat exchange chamber 1 to support the heat exchange sleeve 5 .

[0025] The other end of the heat exchange sleeve 5 serves as a cold air outlet, and the cold air formed after heat exchange enters the heat exchange cavity 10 through the cold air outlet.

[0026] The inner sleeve 2 and the outer sleeve 3 are both foldable tubes.

[0027] A heat exchange sleeve 5 with openings at both ends is arranged in the heat exchange cavity 10, and the heat exchange sleeve 5 is connected to the heat exchange bin 1 through multiple support rods 12. The heat exchange sleeve 5 is fixedly arranged in the heat exchange cavity 10 of the heat exchange bin 1 through the multiple support rods 12, and a heat exchange inner cavity 11 is separated from the heat exchange cavity 10 by the heat exchange sleeve 5. The inner cavity of the heat exchange sleeve 5 is used as the heat exchange inner cavity 11, and the heat exchange cavity 10 is connected to the first air passage 13. The heat exchange tube 4 is arranged in the heat exchange sleeve 5. In order to improve the heat exchange efficiency between the coolant and the air, the heat exchange tube 4 is arranged in a serpentine shape in the heat exchange sleeve 5, or the heat exchange tube 4 is arranged in the heat exchange sleeve 5 in a grid shape, so as to improve the heat exchange efficiency between the coolant and the air flowing in the heat exchange tube 4. One end of the inner sleeve 2 is connected to the heat exchange sleeve 5, and the air enters the heat exchange inner cavity from the inner sleeve 2 and exchanges heat with the coolant in the heat exchange tube 4. The outer sleeve 3 is sleeved on the inner sleeve 2, and one end of the outer sleeve 3 is arranged in the heat exchange cavity 10 and is connected to the heat exchange chamber 1. The first air passage 13 formed between the inner sleeve 2 and the outer sleeve 3 is connected to the heat exchange cavity 10. The air becomes cold air after heat exchange and cooling with the coolant in the heat exchange cavity 11. After flowing out of the heat exchange cavity 11, the cold air flows through the heat exchange cavity 10 and the first air passage 13 in sequence, and is finally discharged from the end of the outer sleeve 3 exposed from the heat exchange cavity.

[0028] In order to facilitate the adjustment of the output position of the cold air, the inner sleeve 2 and the outer sleeve 3 are both foldable tubes.

[0029] In one embodiment, in order to supply coolant to the heat exchange tube 4, the refrigeration assembly includes: The compressor 6 is connected to the heat exchange outlet of the heat exchange tube 4 and is used to compress the heated coolant discharged from the heat exchange outlet of the heat exchange tube 4 to generate refrigerant; The condenser is used to exchange heat between the refrigerant gas output by the compressor 6 and the air, and the refrigerant gas after the heat exchange becomes a liquid refrigerant; The expansion valve is connected to the heat exchange inlet of the heat exchange tube 4 through the coolant outlet, and is used to reduce the pressure of the liquid refrigerant discharged from the condenser into coolant, and send the coolant into the heat exchange tube 4 from the cooling outlet.

[0030] The compressor 6 compresses the heated coolant discharged from the heat exchange outlet of the heat exchange tube 4 to form a high-temperature, high-pressure refrigerant gas. The temperature and pressure of the refrigerant gas are higher than those of the heated coolant. After being discharged from the compressor 6, the refrigerant gas enters the condenser. In the condenser, the refrigerant gas exchanges heat with the air, and the refrigerant gas releases heat. After releasing heat, the refrigerant gas becomes a liquid refrigerant. The liquid refrigerant enters the expansion valve, and the pressure of the liquid refrigerant is reduced by the expansion valve. The liquid refrigerant after the pressure reduction is the coolant. The coolant is sent into the heat exchange tube 4 through the heat exchange inlet of the heat exchange tube 4. The coolant is heated after heat exchange in the heat exchange tube 4, and the heated coolant enters the compressor 6 again.

[0031] In order to extract air for heat exchange with the coolant, the exhaust assembly includes an exhaust motor 7 and an exhaust blade 8; The exhaust motor 7 and the exhaust blades 8 are both arranged in the heat exchange inner cavity 11 , and the exhaust motor 7 drives the exhaust blades 8 to rotate to pump air into the heat exchange sleeve 5 .

[0032] The ventilation and cooling device also includes a filter screen, which is arranged in the heat exchange sleeve 5 and is used to filter the cold air.

[0033] The exhaust motor 7 and the exhaust blade 8 are both arranged in the heat exchange cavity 11, the heat exchange tube 4 is arranged in the heat exchange cavity 11 and is located below the exhaust blade 8, the exhaust motor 7 drives the exhaust blade 8 to rotate and blow air toward the bottom of the heat exchange cavity 10, the air enters the inner sleeve 2 from the end of the inner sleeve 2 exposed from the heat exchange cavity, and then enters the heat exchange cavity 11 to exchange heat with the coolant in the heat exchange tube 4. After the heat exchange, the air is cooled and becomes cold air, the exhaust blade 8 blows the cold air into the heat exchange cavity 10, and then flows through the first air passage 13, and finally is discharged from the end of the outer sleeve 3 exposed from the heat exchange cavity 10. When the cold air enters the heat exchange cavity 10 from the heat exchange cavity 11, in order to filter out impurities in the cold air, a filter is arranged in the heat exchange sleeve 5, and the cold air is filtered through the filter. The filtered cold air enters the heat exchange cavity 10 and is finally discharged from the outer sleeve 3.

[0034] In order to facilitate the adjustment of the air supply angle, the ventilation and cooling device further includes: a base 9, and the heat exchange chamber 1 is movably arranged on the base 9.

[0035] A pair of rotating shafts are symmetrically arranged on the base 9 , and a pair of shaft holes corresponding to the rotating shafts are symmetrically arranged on the outer wall of the heat exchange chamber 1 . The rotating shafts are embedded in the corresponding shaft holes so that the heat exchange chamber 1 can rotate on the base 9 .

[0036] The rotating shaft on the base 9 is embedded in the shaft hole opened on the outer wall of the heat exchange chamber 1, and the heat exchange chamber 1 can rotate around the rotating shaft. In this way, it is convenient to adjust the air supply angle of the end of the outer sleeve 3 exposed from the heat exchange chamber 10 so as to deliver cold air to the designated position.

[0037] The ventilation and cooling device provided by the present invention sets a heat exchange inner cavity in the heat exchange cavity of the heat exchange bin, the heat exchange cavity surrounds the heat exchange inner cavity, the inner sleeve is connected with the heat exchange inner cavity, the outer sleeve is connected with the heat exchange outer cavity, the exhaust component set in the heat exchange inner cavity pumps air into the heat exchange inner cavity through the inner sleeve, the air enters from the end of the inner sleeve exposed from the heat exchange inner cavity, flows into the heat exchange inner cavity through the inner sleeve, the heat exchange tube is set in the heat exchange inner cavity, after the air enters the heat exchange inner cavity, it exchanges heat with the coolant supplied to the heat exchange tube by the refrigeration component, the coolant absorbs the heat of the air to cool the air down to become cold air, and the heated coolant Back to the cooling component again, the cold air flows through the heat exchange inner cavity, the heat exchange cavity and the first air passage and is discharged from the end of the outer sleeve exposed from the heat exchange outer cavity. The cold air is delivered to the cabin or hub of the wind turbine through the ventilation and cooling device, ensuring that the staff can be in a good working environment under high temperature environment and protecting the physical condition of the staff when performing maintenance operations. This solves the problem in the prior art that the temperature in the cabin and hub of the wind turbine is high, which makes the staff prone to heatstroke or dehydration when performing wind turbine operation and maintenance operations, thereby affecting the health of the staff.

[0038] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the embodiments of the present invention will not further describe various possible combinations.

[0039] Those skilled in the art can understand that all or part of the steps in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a program, and the program is stored in a storage medium, including a number of instructions to enable a single-chip microcomputer, a chip or a processor to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0040] In addition, various implementation modes of the embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the embodiments of the present invention, they should also be regarded as the contents disclosed by the embodiments of the present invention.

Claims

1. A ventilation and cooling device for delivering cold air to the nacelle or hub of a wind turbine, characterized in that: The ventilation and cooling device comprises: A heat exchange chamber (1) comprising a heat exchange chamber (10) and a heat exchange inner chamber (11) arranged in the heat exchange chamber (10); An inner sleeve (2), one end of which is disposed in the heat exchange inner cavity (11), and air enters the heat exchange inner cavity (11) through the inner sleeve (2); An outer sleeve (3) is sleeved on the inner sleeve (2), and one end of the outer sleeve is disposed in the heat exchange cavity (10); a first air passage (13) communicating with the heat exchange cavity (10) is formed between the inner tube wall of the outer sleeve (3) and the outer tube wall of the inner sleeve (2); An air extraction component, disposed in the heat exchange inner cavity (11), and used for extracting air into the heat exchange inner cavity (11); A refrigeration assembly for supplying a coolant; The heat exchange tube (4) is arranged in the heat exchange inner cavity (11) and is connected to the coolant outlet of the refrigeration component. The coolant supplied by the refrigeration component enters the heat exchange inner cavity (11) through the heat exchange tube (4) to exchange heat with the air pumped by the exhaust component. After the heat exchange, the air becomes cold air and is discharged after passing through the heat exchange outer cavity and the first air passage. The heated coolant returns to the refrigeration component again.

2. The ventilation and cooling device according to claim 1, characterized in that: The ventilation and cooling device comprises: a heat exchange sleeve (5), the heat exchange sleeve (5) being arranged in a heat exchange cavity (10) to separate the heat exchange cavity (10) to form a heat exchange inner cavity (11), and one end of the heat exchange sleeve (5) being connected to the inner sleeve (2) to introduce air into the heat exchange inner cavity (11).

3. The ventilation and cooling device according to claim 2, characterized in that: The ventilation and cooling device further comprises: a plurality of support rods (12) fixed between the outer wall of the heat exchange sleeve (5) and the cavity wall of the heat exchange chamber (1) to support the heat exchange sleeve (5).

4. The ventilation and cooling device according to claim 2, characterized in that: The other end of the heat exchange sleeve (5) serves as a cold air outlet, and the cold air generated after heat exchange enters the heat exchange cavity (10) through the cold air outlet.

5. The ventilation and cooling device according to claim 1, characterized in that: The inner sleeve (2) and the outer sleeve (3) are both foldable tubes.

6. The ventilation and cooling device according to claim 1, characterized in that: The refrigeration assembly comprises: A compressor (6) connected to the heat exchange outlet of the heat exchange tube (4) and used for compressing the heated coolant discharged from the heat exchange outlet of the heat exchange tube (4) to generate refrigerant gas; A condenser, used for exchanging heat between the refrigerant gas output by the compressor (6) and the air, and the refrigerant gas after the heat exchange becomes a liquid refrigerant; The expansion valve is connected to the heat exchange inlet of the heat exchange tube (4) via the coolant outlet, and is used to reduce the pressure of the liquid refrigerant discharged from the condenser into coolant, and to send the coolant into the heat exchange tube (4) from the coolant outlet.

7. The ventilation and cooling device according to claim 2, characterized in that: The exhaust assembly comprises an exhaust motor (7) and an exhaust blade (8); The exhaust motor (7) and the exhaust blades (8) are both arranged in the heat exchange inner cavity (11); the exhaust motor (7) is used to drive the exhaust blades (8) to rotate so as to pump air into the heat exchange sleeve (5).

8. The ventilation and cooling device according to claim 2, characterized in that: The ventilation and cooling device further comprises: a filter screen, which is arranged in the heat exchange sleeve (5) and is used to filter cold air.

9. The ventilation and cooling device according to claim 1, characterized in that: The ventilation and cooling device further comprises: a base (9), and the heat exchange chamber (1) is movably arranged on the base (9).

10. The ventilation and cooling device according to claim 9, characterized in that: A pair of rotating shafts are symmetrically arranged on the base (9), and a pair of shaft holes corresponding to the rotating shafts are symmetrically arranged on the outer wall of the heat exchange chamber (1), and the rotating shafts are embedded in the corresponding shaft holes so that the heat exchange chamber (1) can rotate on the base (9).

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