CN211777838U

CN211777838U - Heat exchange device and wind generating set comprising same

Info

Publication number: CN211777838U
Application number: CN201922218943.2U
Authority: CN
Inventors: 崔明; 许移庆; 闻汇; 施杨; 吴立建; 方攸同
Original assignee: Zhejiang University ZJU; Shanghai Electric Wind Power Group Co Ltd
Current assignee: Zhejiang University ZJU; Shanghai Electric Wind Power Group Co Ltd
Priority date: 2019-12-11
Filing date: 2019-12-11
Publication date: 2020-10-27
Anticipated expiration: 2029-12-11

Abstract

The utility model provides a heat exchange device reaches wind generating set including it, heat exchange device include a plurality of heat exchangers, and a plurality of heat exchangers are laminated in proper order along its thickness direction, and arbitrary heat exchanger is connected and is communicate with another heat exchanger at least. The utility model discloses a plurality of heat exchanger laminating settings among the heat exchange device are guaranteeing under the prerequisite that the flow resistance amplification of outside air is as little as possible, have increased the effective heat transfer area of heat exchange device's air side, have lengthened the total flow path of coolant liquid in heat exchange device simultaneously, have increased the effective heat transfer area of coolant liquid side among the heat exchange device. Therefore, the heat exchange performance of the heat exchange device is improved, the temperature of a cooling loop is reduced, the processing difficulty and the die sinking investment caused by thickening of a single heat exchanger are avoided, the type selection and the setting of the heat exchanger have high flexibility, and the heat exchanger is particularly suitable for design and production of a platform wind generating set.

Description

Heat exchange device and wind generating set comprising same

Technical Field

The utility model relates to a wind power generation field, in particular to heat exchange device reaches wind generating set including it.

Background

When the wind generating set operates, heat generated by devices such as a generator, a bearing, a converter and the like must be effectively dissipated so as to prevent failure or life reduction of components generated by high temperature. One of the more common cooling systems of a unit absorbs the heat generated by these components by means of a cooling liquid and then dissipates the heat to the outside air by means of a passive heat exchanger located outside the nacelle. As the capacity of the wind turbine generator system increases, the heat generated by the components of the wind turbine generator system also increases significantly, and therefore the cooling power of the existing cooling system needs to be further increased. In addition, the wind generating set is further popularized and installed in high-environment-temperature, high-altitude and low-wind-speed areas, and higher requirements are also put forward on a cooling system.

One possible way is to increase the height and/or width of the passive heat exchanger, but the size of the passive heat exchanger outside the nacelle is limited by design factors such as strength and fatigue, and needs to be limited below a certain limit value to ensure that the passive heat exchanger can bear the load under severe conditions such as typhoon. The height dimension of an external passive heat exchanger of the existing large-scale wind turbine generator is close to 3 meters and reaches the design limit of the height of the external passive heat exchanger, and the width dimension of the passive heat exchanger is limited by the width of a cabin, so that the cooling power of the external passive heat exchanger is difficult to increase by increasing the height or the width of the external heat exchanger.

Another possibility is to increase the thickness of the passive heat exchanger, in which case the flow resistance is increased, but the effective heat exchange area is also increased, so that the overall heat dissipation effect may be increased. However, there are technical and economic problems in increasing the thickness of the heat exchanger, for example, after the spanwise width of the heat exchanger fin is increased to a certain limit, the processing difficulty and the processing cost are significantly increased. In addition, for different types of non-batch units, the passive heat exchanger with the brand-new thickness size is manufactured by opening the die again, so that the economic cost is improved, and the flexibility is poor. Therefore, the overall heat dissipation effect is improved by increasing the thickness of the passive heat exchanger, which is difficult to achieve due to the reasons mentioned above, so that the heat dissipation effect of the passive heat exchanger is difficult to be effectively enhanced by the method.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a heat exchange device and including its wind generating set in order to overcome the relatively poor defect of heat transfer effect of passive heat exchanger among the prior art.

The utility model discloses an above-mentioned technical problem is solved through following technical scheme:

a heat exchange device is used for a wind generating set and is characterized by comprising a plurality of heat exchangers, wherein the heat exchangers are sequentially attached along the thickness direction of the heat exchangers, and any heat exchanger is connected and communicated with at least one other heat exchanger; the thickness direction of the heat exchanger is parallel to the axial direction of the wind generating set.

In this scheme, through a plurality of heat exchanger laminating settings among the heat exchange device, under the prerequisite of guaranteeing that the flow resistance increase of outside air is as little as possible, increased the effective heat transfer area of heat exchange device's air side, lengthened the total flowpath of coolant liquid in heat exchange device simultaneously, increased the effective heat transfer area of coolant liquid side among the heat exchange device. Therefore, the heat exchange performance of the heat exchange device is improved, the temperature of a cooling loop is reduced, the processing difficulty and the die sinking investment caused by thickening of a single heat exchanger are avoided, the type selection and the setting of the heat exchanger have high flexibility, and the heat exchanger is particularly suitable for design and production of a platform wind generating set.

Preferably, the upper end and the lower end of any heat exchanger are provided with connecting pipelines, the two heat exchangers are connected and communicated through the connecting pipelines, and the connecting pipelines on the heat exchangers at the two ends of the heat exchanger in the thickness direction are also connected with a cooling loop of the wind generating set.

In this case, the coolant in the cooling circuit can flow through the heat exchanger to exchange heat with the outside air, and the temperature of the coolant is reduced.

Preferably, a flange is arranged at a connecting port of one end of the connecting pipeline, which is far away from the corresponding heat exchanger, and the connecting pipeline is connected with the other heat exchanger or the cooling circuit through the flange.

In this scheme, the flange is used for strengthening the reliability of connecting between the connecting line, reduces the possibility of coolant liquid seepage.

Preferably, a plurality of the heat exchangers are connected as a whole by fasteners, the fasteners being located at both ends of the heat exchangers in the width direction.

In this scheme, the fastener guarantees that a plurality of heat exchangers can closely laminate always, can not produce obvious space between two adjacent heat exchangers, avoids because the problem that the flow resistance that the space of great size caused is showing and increases.

Preferably, the heat exchangers are air-water heat exchangers, and the fins of the heat exchangers are in the same form.

In this case, the cooling of the coolant in the heat exchanger device is achieved by passing the outside air through the heat exchanger, and the heat exchanger is preferably formed of the same fin type because the different fin types easily increase the flow resistance of the outside air.

Preferably, the heat exchange device further comprises a support member disposed at a lower end of the heat exchange device, the support member is disposed at a side edge of the heat exchange device, and the support member is a plate-shaped structure.

In this scheme, support piece is used for guaranteeing that heat exchange device can fix on wind generating set steadily.

A wind generating set comprises a cabin and is characterized in that the wind generating set utilizes the heat exchange device which is arranged outside the cabin and at the upper end of the cabin.

In the scheme, the outside air flows to the heat exchange device from the windward end of the wind generating set, the cooling liquid flowing through the heat exchange device is cooled, and the cooled cooling liquid cools the heating components in the wind generating set through the cooling loop again.

Preferably, the heat exchange device is arranged on one side of the engine room close to the windward end of the wind generating set.

Preferably, the wind generating set further comprises a positioning assembly arranged outside the nacelle, the positioning assembly is connected between the nacelle and the heat exchange device, and the positioning assembly is used for positioning the heat exchange device.

In this scheme, the locating component is used for guaranteeing the accuracy of cooperation installation between a plurality of heat exchangers in the heat exchange device.

Preferably, the positioning assembly includes a slide rail disposed on the nacelle and a slide block disposed on the heat exchanger, the slide rail extends along the axial direction of the wind turbine generator system, the slide block is slidable relative to the slide rail, two ends of the slide rail along the axial direction of the wind turbine generator system are further provided with a limiting member, and the limiting member is used for limiting the slide block to move out of the slide rail.

In the scheme, the heat exchange device is connected with the cabin through the matching between the sliding block and the sliding rail, the heat exchange device can be quickly positioned on the cabin, and the fixation between the heat exchanger and the cabin is enhanced.

Preferably, the slide rail is provided with a groove, and the cross section of the groove along the height direction of the slide rail is in an inverted T shape.

In this scheme, the type of falling T recess can be after slide rail and slider installation are accomplished, and the restriction slider removes along the direction of height of slide rail, stability when guaranteeing heat exchange device to use.

The utility model discloses an actively advance the effect and lie in: through the laminating setting of a plurality of heat exchangers among the heat exchange device, on the prerequisite of guaranteeing that the flow resistance amplitude of outside air is as little as possible, increased the effective heat transfer area of heat exchange device's air side, lengthened the total flow path of coolant liquid in heat exchange device simultaneously, increased the effective heat transfer area of coolant liquid side among the heat exchange device. Therefore, the heat exchange performance of the heat exchange device is improved, the temperature of a cooling loop is reduced, the processing difficulty and the die sinking investment caused by thickening of a single heat exchanger are avoided, the type selection and the setting of the heat exchanger have high flexibility, and the heat exchanger is particularly suitable for design and production of a platform wind generating set. Outside air flows to the heat exchange device from the windward end of the wind generating set, the cooling liquid flowing through the heat exchange device is cooled, and the cooled cooling liquid cools heat generating components in the wind generating set through the cooling loop again.

Drawings

Fig. 1 is a schematic perspective view of a heat exchange device according to an embodiment of the present invention.

Fig. 2 is a schematic perspective view of a heat exchanger according to an embodiment of the present invention.

Fig. 3 is a schematic view of an internal structure of a wind turbine generator system according to an embodiment of the present invention.

Fig. 4 is a schematic perspective view of a positioning assembly according to an embodiment of the present invention.

Fig. 5 is an enlarged view of a portion a of the positioning assembly shown in fig. 4 according to an embodiment of the present invention.

Description of reference numerals:

1 Heat exchanger

11 radiating fin

2 connecting pipeline

3 Flange

4 support piece

5 nacelle

6 Cooling circuit

7 sliding rail

71 groove

8 sliding block

Detailed Description

The present invention will be more clearly and completely described below with reference to the accompanying drawings.

The embodiment provides a heat exchange device for a wind generating set, and as shown in fig. 1 to 3, the heat exchange device comprises three identical heat exchangers 1, the three heat exchangers 1 are sequentially attached along the thickness direction of the heat exchangers, and the three heat exchangers 1 are sequentially communicated with each other, that is, the three heat exchangers 1 are connected in series. Wherein, the thickness direction of the heat exchanger 1 is parallel to the axial direction of the wind generating set.

The heat exchange device is divided into three independent heat exchangers 1, when one heat exchanger 1 fails, the heat exchanger 1 with the failure can be replaced and maintained independently, or the heat exchanger 1 with the failure is short-circuited through a connecting pipeline, so that other heat exchangers 1 can operate normally, and the maintenance cost is saved.

The flow direction of the heat exchanger 1 in the prior art is generally unidirectional, for example, the heat exchanger 1 flows from the upper part to the lower part, and when the heat exchange effect is enhanced by simply thickening the thickness of the heat exchanger 1, the inside of the heat exchanger 1 is actually a part of a plurality of cooling circuits 6 connected in parallel. In the case where the cooling liquids are converged and then pass through the heat exchanger 1, the effect of series connection is superior to that of parallel connection, and particularly, in the case where the wind speed is high, the difference between the two is more obvious. If the interior of the individual heat exchangers 1 is configured in a series configuration, the end volume of the heat exchangers 1 is increased, and the difficulty and cost of processing the heat exchangers 1 are increased.

The heat exchanger 1 close to the windward end of the wind power generation set carries out heat exchange firstly, and the three heat exchangers 1 are closely attached, so that the external air flowing out of the previous heat exchanger 1 can flow into the next heat exchanger 1 needing heat exchange completely, and the air resistance borne by the next heat exchanger 1 is reduced.

The three heat exchangers 1 are the same, so that the production cost can be reduced, and other different heat exchangers 1 do not need to be produced by another set of dies. In other alternative embodiments, different shapes and sizes may be used between the heat exchangers 1, but any one heat exchanger 1 is connected to and communicates with at least another heat exchanger 1. The other heat exchanger 1, which is connected and in communication with only one heat exchanger 1, needs to be in communication with the cooling circuit 6 of the wind power plant.

The windward side of the heat exchanger 1 adopts a structure of the radiating fins 11, gaps exist among the radiating fins 11, and outside air can flow into the heat exchanger 1 through the gaps among the radiating fins 11 and further exchanges heat with cooling liquid in the heat exchanger 1, so that the temperature of the cooling liquid is reduced. Along the axial direction of the wind generating set, the heat exchange effect of the heat exchanger 1 closer to the windward end of the wind generating set is better, and the heat exchange effect of the heat exchanger 1 farther from the windward end of the wind generating set is poorer, because the outside air passing through the heat exchanger 1 farther from the windward end of the wind generating set is subjected to overheat exchange with the heat exchanger 1 closer to the windward end of the wind generating set, the temperature is increased, and therefore the heat exchange effect is poorer.

Through the laminating setting of a plurality of heat exchangers 1 among the heat exchange device, on the prerequisite of guaranteeing that the flow resistance amplitude of outside air is as little as possible, increased the effective heat transfer area of heat exchange device's air side, lengthened the total flow path of coolant liquid in heat exchange device simultaneously, increased the effective heat transfer area of coolant liquid side among the heat exchange device. Therefore, the heat exchange performance of the heat exchange device is improved, the temperature of the cooling loop is reduced, and the processing difficulty and the die sinking investment caused by thickening of the single heat exchanger 1 are also avoided.

The heat exchange requirements required by wind generating sets of different models and sizes are different, so that the sizes of the heat exchangers 1 are different, and the heat exchangers 1 of different models need to be purchased. To the heat transfer requirement of different wind generating set, this embodiment can satisfy through the quantity that changes heat exchanger 1, therefore the model selection and the setting of heat exchanger 1 have stronger flexibility, are particularly useful for the design and the production of the wind generating set of platformization, reduce cost and purchase cycle.

In other alternative embodiments, the number of the heat exchangers 1 in the heat exchange device may not be limited to three, but should be greater than or equal to two, and a plurality of the heat exchangers 1 should be sequentially attached to each other in the thickness direction. Any heat exchanger 1 is connected and in communication with at least another heat exchanger 1, and the other heat exchanger 1 connected and in communication with only one heat exchanger 1 is also required to be in communication with the cooling circuit 6 of the wind power plant. Besides that two adjacent heat exchangers 1 are communicated with each other, i.e. the heat exchangers 1 are connected in series, a parallel or series-parallel mode can be adopted, i.e. one heat exchanger 1 is not limited to be communicated with only the adjacent heat exchanger 1, and can also be communicated with the non-adjacent heat exchanger 1. When the heat exchangers 1 are connected in parallel or in series, one heat exchanger 1 is not limited to be connected to only one or two other heat exchangers 1, and may be connected to three or more other heat exchangers 1 if the heat exchangers 1 are appropriately sized.

The upper end and the lower end of any heat exchanger 1 are provided with connecting pipelines 2, and two adjacent heat exchangers 1 are connected and communicated through the connecting pipelines 2. In other alternative embodiments, when the heat exchangers 1 are connected in parallel or in series, the heat exchangers 1 are still connected and communicated with each other through the connecting pipeline 2. In the thickness direction of the heat exchange device, the connecting pipelines 2 on the two heat exchangers 1 at the two ends of the heat exchange device in the thickness direction are also connected with the cooling loop 6 of the wind generating set, so that the cooling liquid in the cooling loop 6 can flow through the heat exchangers 1 to exchange heat with the outside air, and the temperature of the cooling liquid is reduced. A pump, such as a hydraulic pump, is also connected to the cooling circuit 6 for driving the cooling fluid in the cooling circuit 6 to circulate, so as to ensure that the cooling fluid can be continuously circulated to cool the heat generating components of the wind turbine generator system.

In order to enhance the reliability of the connection between the connecting pipelines 2 and reduce the possibility of leakage of the cooling liquid, a flange 3 is arranged at a connecting port at one end of the connecting pipeline 2 far away from the corresponding heat exchanger 1, and the connecting pipeline 2 is connected with another heat exchanger 1 or a cooling circuit 6 through the flange 3. In other alternative embodiments, the flange 3 may not be disposed at the connecting port of the connecting pipeline 2, and other structures may be adopted to realize detachable connection, which also needs to ensure that the cooling liquid does not leak out of the connecting pipeline 2.

The three heat exchangers 1 are connected into a whole through the fasteners, so that the three heat exchangers 1 can be always tightly attached, obvious gaps cannot be generated between every two adjacent heat exchangers 1, and the problem that the flow resistance of the outside air is remarkably increased due to the large-size gaps is solved. The fasteners are located at both ends of the heat exchanger 1 in the width direction to avoid interference with the pipes for the flow of the cooling liquid in the heat exchanger 1. In other alternative embodiments, the fastening members may be provided at both ends of the heat exchanger 1 in the height direction, but avoid the piping for the flow of the cooling liquid in the heat exchanger 1.

The three heat exchangers 1 can be connected simultaneously through long bolts, and the heat exchangers 1 can be connected pairwise through shorter bolts. In other alternative embodiments, when the heat exchange device comprises only two heat exchangers 1, there is only one connection between the two heat exchangers 1, i.e. the two heat exchangers are directly connected as a whole; when the heat exchange device includes four or more heat exchangers 1, all the heat exchangers 1 may be directly connected as a whole using long bolts, or two or more adjacent partial heat exchangers 1 may be connected using short bolts.

Wherein, all heat exchanger 1 of long bolted connection make the direct connection of a plurality of heat exchanger 1 convenient and fast more, short bolted connection part heat exchanger 1 need not dismantle all heat exchanger 1 when can make things convenient for the later maintenance, just only dismantles the part and just can take out the heat exchanger 1 that needs take out.

The heat exchanger 1 is a tube-fin heat exchanger 1, the tube-fin heat exchanger 1 belongs to an air-water heat exchanger 1, external air flows through the heat exchanger 1 from the windward end of the wind generating set, then the air with lower external temperature and the cooling liquid with higher temperature in the heat exchanger 1 are subjected to heat exchange, so that the temperature of the cooling liquid is reduced, the cooling liquid with the reduced temperature cools heating components in the wind generating set through the cooling loop 6 again, and the stable operation of the wind generating set is ensured.

In other alternative embodiments, the heat exchanger 1 may also adopt other structures of the air-water heat exchanger 1, and the cooling of the cooling liquid in the heat exchange device is realized by passing the outside air through the heat exchanger 1 in the heat exchange device.

Wherein the fin forms of the heat exchanger 1 need to be the same, for example, corrugated fins are used, and the size and the interval of the fins are preferably the same, so as to avoid the increase of the flow resistance of the outside air due to the difference of the fin forms of the heat exchanger 1.

The heat exchange device further comprises a supporting piece 4 arranged at the lower end of the heat exchange device, the supporting piece 4 is arranged on the side edge of the heat exchange device, the windward side of the heat exchange device is prevented from being blocked, and the cooling effect of cooling liquid in the heat exchange device is guaranteed. The side edges of the heat exchange device refer to two edges of the heat exchange device along the circumferential direction of the wind generating set.

The supporting member 4 is a trapezoidal plate-shaped structure, wherein the windward side of the supporting member 4 is the side with the thickness thereof, so that the air resistance of the supporting member 4 is reduced. The trapezoidal shape enables the heat exchange device to be stably fixed and maintained on the wind generating set, the frontal area of the plate-shaped support 4 is small, and the air resistance of the support 4 can be reduced. In other alternative embodiments, the support element 4 may also be a plate-shaped element of another shape, for example triangular, which ensures a stable fixing of the heat exchanger device to the wind turbine.

As shown in fig. 3, the present embodiment further provides a wind turbine generator system, which includes a nacelle 5 and the above-mentioned heat exchanging device, the heat exchanging device is disposed outside the nacelle 5 and on one side of the upper end of the nacelle 5, which is close to the windward end of the wind turbine generator system, the external air flows to the heat exchanging device from the windward end of the wind turbine generator system, the cooling liquid flowing through the heat exchanging device is cooled, and the cooled cooling liquid cools the heat generating components in the wind turbine generator system again through the cooling circuit 6.

The engine room 5 and the cooling loop 6 of the wind generating set are kept static relative to the wind generating set, so that the heat exchange device arranged on the engine room 5 can also be kept static relative to the wind generating set, a rotary joint is not required to be connected between the heat exchange device and the cooling loop 6, the cost is saved, and the stability of the heat exchange device in use is ensured. The rotary joint is a connection part between a stationary cooling line and a rotating cooling line in the cooling circuit 6.

In other alternative embodiments, the heat exchange device may be disposed at other positions on the upper portion of the nacelle 5, not limited to only one side of the nacelle 5 near the windward end of the wind turbine generator set, but may also be disposed at other areas outside the nacelle 5, but it is necessary to avoid interference with other components of the wind turbine generator set, and the heat exchange device can ensure that the cooling liquid flowing through the heat exchange device can be sufficiently cooled by sufficient outside air.

As shown in fig. 4 to 5, the wind turbine further includes a positioning assembly disposed outside the nacelle 5, the positioning assembly is connected between the nacelle 5 and the heat exchanging device, and the positioning assembly is used for positioning the heat exchanging device on the nacelle 5, so as to ensure the accuracy of the fitting installation between the plurality of heat exchangers 1 in the heat exchanging device. The positioning assembly comprises a slide rail 7 arranged on the engine room 5 and a slide block 8 arranged on the heat exchanger 1, the slide rail 7 extends along the axial direction of the wind generating set, and the slide block 8 can slide relative to the slide rail 7. The skid rails 7 are fixed to the nacelle 5 by welding or fastening, etc., so that the skid rails 7 can be kept stationary relative to the nacelle 5. The heat exchanger 1 in the heat exchange device is sequentially installed through the matching of the sliding block 8 and the sliding rail 7, the reliability of mutual positioning is guaranteed, and the reliability of positioning and use of the whole heat exchange device is further guaranteed.

The connection with the cabin 5 is realized through the matching between the sliding block 8 and the sliding rail 7, the positioning of the heat exchange device on the cabin 5 can be quickly realized, and the fixation between the heat exchanger 1 and the cabin 5 is enhanced.

In order to keep the slide rail 7 and the slide block 8 relatively stationary after the installation of the slide rail 7 and the slide block 8 is completed, limiting members (not shown in the figure) are further disposed at two ends of the slide rail 7 along the axial direction of the wind turbine generator system. After the sliding rail 7 and the sliding block 8 are installed, limiting parts are additionally installed at two ends of the sliding rail 7 and used for limiting the sliding block 8 to move out of the sliding rail 7, namely, the sliding block 8 is limited to move along the axial direction of the wind generating set after the sliding rail 7 and the sliding block 8 are installed, so that the heat exchange device and the engine room 5 can be kept relatively still, and the stability of the heat exchange device in use is guaranteed.

The slide rail 7 is provided with a groove 71, a slide block 8 on the heat exchange device is matched with the groove 71, and the slide block 8 can move in the groove 71 along the axial direction of the wind generating set. The two ends of the groove 71 along the axial direction of the wind generating set are communicated, so that the heat exchange device can be installed from any end of the slide rail 7 along the axial direction of the wind generating set, and the installation and maintenance flexibility is improved.

The cross-sectional shape of recess 71 along the direction of height of slide rail 7 is the type of falling T, and after slide rail 7 and slider 8 installation, slide rail 7 can restrict slider 8 and remove along the direction of height of slide rail 7, guarantees the stability when heat exchange device used, and this spacing mode easy operation moreover, and the man-hour that consumes is shorter, need not to design other structures again and guarantees that slider 8 can not take place to remove on the direction of height of slide rail 7, guarantees the stability when heat exchange device uses.

In other alternative embodiments, the shape of the cross section of the groove 71 along the height direction of the sliding rail 7 is not limited to an inverted T shape, and other shapes can be adopted, the adopted shape at least needs to ensure that the sliding block 8 can move in the groove 71 along the axial direction of the wind turbine generator system, and preferably, the adopted shape can limit the movement of the sliding block 8 along the height direction of the sliding rail 7 after the sliding rail 7 and the sliding block 8 are installed, so as to ensure the stability of the heat exchange device in use.

Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. A heat exchange device is used for a wind generating set and is characterized by comprising a plurality of heat exchangers, wherein the heat exchangers are sequentially attached along the thickness direction of the heat exchangers, and any heat exchanger is connected and communicated with at least one other heat exchanger; the thickness direction of the heat exchanger is parallel to the axial direction of the wind generating set.

2. The heat exchange device according to claim 1, wherein the upper end and the lower end of any heat exchange are provided with connecting pipelines, the two heat exchangers are connected and communicated through the connecting pipelines, and the connecting pipelines on the heat exchangers at the two ends of the heat exchange device in the thickness direction are also connected with a cooling loop of the wind generating set.

3. The heat exchange device according to claim 2, wherein a flange is provided at a connection port at an end of the connection pipe remote from the corresponding heat exchanger, and the connection pipe is flanged to another heat exchanger or the cooling circuit.

4. The heat exchange device according to claim 2, wherein a plurality of the heat exchangers are connected as a whole by fastening members, the fastening members being located at both ends in a width direction of the heat exchangers.

5. The heat exchange device of claim 1, wherein the heat exchangers are air-to-water heat exchangers, and the fins of the heat exchangers are identical.

6. The heat exchange device of claim 1, further comprising a support member provided at a lower end thereof, the support member being provided at a side of the heat exchange device, the support member being of a plate-like configuration.

7. Wind park comprising a nacelle, wherein the wind park utilizes a heat exchange device according to any of claims 1-6, which is arranged outside the nacelle and at the upper end of the nacelle.

8. A wind park according to claim 7, wherein the heat exchanging means are provided at a side of the nacelle adjacent a windward end of the wind park.

9. The wind power plant of claim 7, further comprising a positioning assembly disposed outside the nacelle, the positioning assembly being coupled between the nacelle and the heat exchange device, the positioning assembly being configured to position the heat exchange device.

10. The wind generating set according to claim 9, wherein the positioning assembly includes a slide rail disposed on the nacelle and a slide block disposed on the heat exchanger, the slide rail extends along an axial direction of the wind generating set, the slide block is slidable relative to the slide rail, and the slide rail further has a limiting member disposed at two ends of the slide rail along the axial direction of the wind generating set, the limiting member being configured to limit the slide block from moving out of the slide rail.

11. The wind turbine generator system of claim 10, wherein the rail has a groove having an inverted T-shaped cross-section along the height of the rail.