CN202483806U - Heat dissipation device of wind power generation water-cooling system and water-cooling system - Google Patents

Abstract

The utility model discloses a heat dissipation device of a water cooling system for wind power generation, which is used to dissipate heat from the cooling liquid arranged in the liquid collecting tank of the water cooling system in the nacelle cover. In the box, the heat release section of the heat pipe is placed outside the nacelle cover; the utility model also discloses a wind power generation water cooling system including the above-mentioned cooling device; Indirect cooling of the cooling liquid eliminates the use of cooling fans and plate heat exchangers, which avoids the energy consumption of fans and the high brazing technology of plate heat exchangers; in addition, the superior natural wind of the wind field can be fully utilized to improve the cooling effect. The liquid is cooled and dissipated to save energy.

Description

Heat dissipation device and water cooling system for wind power generation water cooling system

technical field

The utility model relates to the technical field of water cooling for wind power generation, in particular to a cooling device for a water cooling system for wind power generation and a water cooling system containing the cooling device.

Background technique

For the existing wind turbine water cooling system, the cooling and heat dissipation device of the coolant is mostly a combination of a plate heat exchanger and a fan, and the fan is installed on the plate heat exchanger to perform forced convection heat dissipation on the coolant, or the plate heat exchanger is placed on the The roof of the nacelle is naturally cooled by the natural wind from the wind field. The former fan consumes energy, increases equipment, and has a complex structure. The latter uses natural wind. Due to the narrow channel size and large wind resistance, when the wind field wind speed is about 10m/s, The natural wind speed that can pass through the cooling air duct is only 2m/s-3m/s, and the plate heat exchanger has high requirements for brazing technology.

Utility model content

The purpose of the utility model is to propose a heat dissipation device for a wind power generation water cooling system, which is used to reduce cooling liquid heat dissipation equipment and improve the utilization rate of natural wind resources.

Another purpose of the utility model is to provide a water cooling system for wind power generation.

In order to achieve the above object, the utility model adopts the following technical solutions:

A cooling device for a water-cooling system for wind power generation, which is used to dissipate heat from the coolant disposed in the liquid collection tank of the water-cooling system inside the nacelle cover, including a plurality of heat pipes, the heat-absorbing sections of the heat pipes are placed in the liquid collection tank, and the heat pipes The heat release section is placed outside the nacelle cover.

Further, the heat pipe is a two-phase closed thermosiphon.

Further, it also includes a shroud fixed on the nacelle cover and covered outside the heat radiation section of the heat pipe.

Further, the shroud is an arc-shaped tapered structure.

Further, the inlet and outlet of the liquid collection tank are respectively provided with a liquid distribution pipe and a liquid collection pipe.

Further, both the liquid distribution pipe and the liquid collection pipe are pipe bodies provided with a plurality of openings from top to bottom, and the size of the multiple openings of the pipe body gradually decreases from top to bottom.

Further, the heat-absorbing section and the heat-dissipating section of the heat pipe are equipped with fins on the outside.

Further, the plurality of heat pipes are arranged in a row or in a forked row.

Further, the heat pipe is fixed and sealed with the liquid collection tank and the nacelle cover through the fixed partition and the fixed block; the fixed partition includes a lower fixed partition arranged at the top opening of the liquid collection tank and a lower fixed partition arranged at the top opening of the nacelle The upper fixed partition at the place; the upper fixed block and the lower fixed block are installed on the heat pipe, and the upper fixed block is clamped with the upper fixed partition, and the lower fixed block is clamped with the lower fixed partition.

A water-cooling system for wind power generation, used to cool heat dissipation equipment to be cooled, including a liquid collection tank, a circulation device, a support frame and the above heat dissipation device arranged in a nacelle cover; the heat dissipation equipment to be cooled, circulation device, liquid collection The tanks are connected end to end by hoses, and the support frame is used to support the sump tank inside the nacelle cover.

Compared with the prior art, the utility model has the following beneficial effects:

A heat pipe is a heat transfer component with high thermal conductivity, especially a two-phase closed thermosiphon, which circulates the working medium in the tube through gravity. Its manufacturing process is simple, its production cost is low, its work is reliable, its heat transfer efficiency is high, and its The critical heat flux density; the utility model can fully combine the characteristics of the heat pipe and use the natural wind of the wind field to cool and dissipate the cooling liquid. The forced convection heat exchange is carried out with the low-temperature air flowing from the wind field outside the nacelle cover. By using the heat pipe instead of the original plate heat exchanger, on the one hand, no cooling fan and plate heat exchanger are used to perform forced convection heat exchange on the coolant. Reduce the equipment and avoid the high brazing technology required by the plate heat exchanger; The flow rate of the natural wind flowing through the cooling channel drops sharply. The heat pipes are arranged reasonably by this device to avoid the sharp drop of the natural wind and weaken the effect of convective heat transfer, so as to save energy.

The technical solutions of the present utility model will be further described in detail through the drawings and embodiments below.

Description of drawings

Fig. 1 is a cross-sectional view of a wind power generation water-cooling system (including a cooling device) in a specific embodiment of the present invention;

Fig. 2 is the basic schematic diagram of the cooling liquid heat dissipation of the heat dissipation device of the wind power generation water cooling system in the specific embodiment of the present invention;

Fig. 3 is a schematic diagram of the basic structure of the liquid distribution pipe in the cooling device of the wind power generation water cooling system in the specific embodiment of the utility model;

Fig. 3 a is A-A direction view among Fig. 3;

Fig. 4 is a schematic diagram of the basic structure of the wind deflector of the cooling system of the wind power generation water cooling system in the specific embodiment of the present invention;

Fig. 4a is A-A direction view among Fig. 4;

Fig. 5 is a schematic diagram of the basic structure of the heat pipe of the cooling device of the wind power generation water cooling system in the specific embodiment of the present invention;

Fig. 6 is a schematic diagram of the basic structure of the upper fixed partition connected to the cooling device of the wind power generation water cooling system and the nacelle cover in the specific embodiment of the utility model;

Fig. 7 is a schematic diagram of the basic structure of the lower fixed partition connected to the cooling device of the water cooling system for wind power generation and the liquid collection tank in the specific embodiment of the utility model;

Fig. 8 is a schematic diagram of the basic structure of the liquid collecting pipe of the cooling device of the wind power generation water cooling system in the specific embodiment of the utility model;

Fig. 8a is A-A direction view among Fig. 8;

Fig. 9 is a schematic diagram of the basic structure of the cooling liquid collection tank of the heat dissipation device of the wind power generation water cooling system in the specific embodiment of the utility model (overlooking);

Fig. 10 is a schematic diagram of the basic structure of the arrangement of the heat pipes of the cooling device of the water cooling system for wind power generation in a specific embodiment of the present invention;

Fig. 11 is a schematic diagram of the basic structure of the arrangement of the heat pipe forks of the cooling device of the wind power generation water cooling system in the specific embodiment of the utility model;

In the figure, 1. circulation device, 2. nacelle cover, 3. liquid distribution pipe, 4. liquid collecting tank, 5. deflector cover, 6. heat pipe, 6-1. heat release section, 6-2. upper fixing block, 6. -3, lower fixed block, 6-4, heat-absorbing section, 7, upper fixed partition, 8, lower fixed partition, 9, liquid collection pipe, 10, support frame, 11, hose, 12, heat dissipation to be cooled equipment.

Detailed ways

The preferred embodiments of the present utility model are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present utility model, and are not intended to limit the present utility model.

As shown in Figure 1, the cooling device of the water cooling system for wind power generation of the present invention is used to dissipate heat from the coolant disposed in the water cooling system liquid collection tank 4 in the nacelle cover 2, and includes a plurality of heat pipes 6, and the heat pipes 6 are two-phase Closed thermosiphon, the heat absorbing section 6-4 of the heat pipe 6 is placed in the liquid collecting tank 4, and the heat release section 6-1 of the heat pipe 6 is placed outside the nacelle cover 2.

The principle of the heat dissipation device of the wind power water cooling system of the utility model is to exchange heat by setting heat pipes, replace plate heat exchangers and fans with heat pipes, and use superior natural wind for indirect cooling, as shown in Figure 2 for the basic principle of cooling, the cooling liquid The direction of flow through the liquid collection tank (lower arrow) and the direction of natural wind flow in the wind field (upper arrow) can be forward flow, reverse flow can be selected, and the direction of coolant circulation can be changed.

Among them, the working principle of heat pipe heat exchange is as follows:

The heat-absorbing section of the heat pipe absorbs the heat of the medium to be cooled, and transfers the heat to the working fluid in the tube (liquid, such as R22, methanol, ammonia and other low-temperature heat pipe working fluids), and the working fluid transforms into steam in the form of evaporation and boiling after absorbing heat , the steam rises to the exothermic section under the action of pressure difference, condenses into liquid under the action of low-temperature fluid to release latent heat of vaporization, and the condensed liquid flows back to the endothermic section by gravity. Since the inside of the heat pipe is evacuated, the working fluid is easily evaporated and boiled, and the heat pipe starts quickly.

In order to make full use of the inflowing air from the natural wind field, as shown in Figures 1, 4, and 4a, a wind deflector 5 is fixedly installed on the nacelle cover 2. The outer side of the hot section 6-1 is to increase the wind speed and air volume in contact with the heat pipe 6 to improve convective heat transfer.

In order to ensure the uniformity of the cooling liquid in the liquid collection tank 4, as shown in Figure 1, a liquid distribution pipe 3 and a liquid collection pipe 9 are respectively arranged at the inlet and outlet of the liquid collection tank 4, wherein the liquid distribution pipe 3 and the collection pipe The connecting round pipe on the liquid pipe 9 can be arranged vertically or horizontally. As shown in Figures 3, 3a, 8, and 8a, both the liquid distribution pipe and the liquid collection pipe are pipe bodies with multiple openings from top to bottom, and the size of the multiple openings on the pipe body gradually decreases from top to bottom.

As shown in FIG. 5 , fins can be installed on the outer sides of the heat absorbing section 6 - 4 and the heat releasing section 6 - 1 of the heat pipe 6 to enhance heat transfer.

According to the heat dissipation of cooling equipment 12 (converter, generator, gear box, etc.) to be cooled, the size and quantity of heat pipe 6 can be designed differently according to the needs of heat exchange. Row layout, as shown in Figure 10, can be arranged in fork rows, as shown in Figure 11.

As shown in Figures 1, 5, 6, 7, and 9, the heat pipe 6 is fixed and sealed with the liquid collection tank 4 and the nacelle cover 2 through a fixed partition and a fixed block; The lower fixed partition 8 and the upper fixed partition 7 arranged at the top opening of the nacelle cover 2; the upper fixed block 6-2 and the lower fixed block 6-3 are installed on the heat pipe 6, through which the upper fixed block 6-2 and the upper fixed The partition plate 7 is fixedly clamped, and is fixedly clamped with the lower fixed partition plate 8 through the lower fixed block 6-3. Wherein the overall size of the upper fixed partition 7 is larger than the lower fixed partition 8, so that the lower fixed partition 8 is connected with the liquid collection tank 4 through the opening at the top of the nacelle cover 2, and the size of the opening on the upper fixed partition 7 is larger than that of the lower fixed partition. 8, the size of the upper opening is convenient for the lower fixed block 6-3 on the heat pipe 6 to pass through the upper fixed partition 7.

The water cooling system for wind power generation of the present utility model is mainly used for cooling the heat dissipation equipment 12 to be cooled, as shown in Figure 1, including the liquid collection tank 4, the circulation device 1, the support frame 10 and the above heat dissipation device arranged in the nacelle cover 2 ; The heat dissipation equipment 12 to be cooled is connected end to end with the circulation device 1 and the liquid collection tank 4 through the hose 11 , and the support frame 10 is used to support the liquid collection tank 4 in the nacelle cover 2 .

The working principle of the above-mentioned wind power water cooling system is: under the action of the circulation device 1, the high-temperature coolant is sent into the liquid distribution pipe 3 through the hose 11, and enters the liquid collection tank 4 through the diversion. Under the action of 4, the high-temperature coolant is cooled, and the working fluid in the heat-absorbing section 6-4 absorbs heat and evaporates to the exothermic section 6-1. Under the action of the natural wind in the wind field, the forced convection heat exchange is performed, and the steam is cooled to a liquid state. Return to the heat-absorbing section 6-4 under the action of gravity, and repeat the cycle, and the cooled coolant enters the liquid collection pipe 9 under the action of the circulation device 1, and enters the heat dissipation equipment 12 to be cooled through the hose 11. The coolant is recirculated to cool it.

In summary, the implementation of the utility model can no longer use the cooling fan and the plate heat exchanger, avoiding the energy consumption of the fan and avoiding the high brazing technology of the plate heat exchanger; in addition, the superior natural wind of the wind field can be fully utilized, Coolant for cooling and heat dissipation.

The above is only a preferred embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, any person familiar with the technology can easily think of it within the technical scope disclosed in the utility model Changes or replacements should fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be based on the protection scope of the claims.

Claims (10)

1. wind-power electricity generation constituent sink; Be used for the cooling liquid that is arranged on constituent catch box in the engine room cover is dispelled the heat, it is characterized in that, comprise a plurality of heat pipes; The endotherm section of said heat pipe places in the catch box, and the heat release section of heat pipe places outside the engine room cover.

2. wind-power electricity generation constituent sink according to claim 1 is characterized in that said heat pipe is a two-phase closed type hot siphon.

3. wind-power electricity generation constituent sink according to claim 1 is characterized in that, also comprises the air guide sleeve that is fixed on the said engine room cover and covers in the heat release section outside of heat pipe.

4. wind-power electricity generation constituent sink according to claim 3 is characterized in that, said air guide sleeve is the tapering type structure of arc.

5. wind-power electricity generation constituent sink according to claim 1 is characterized in that the inlet/outlet place of said catch box is provided with liquide separating tube, liquid collecting pipe respectively.

6. wind-power electricity generation constituent sink according to claim 5 is characterized in that said liquide separating tube, liquid collecting pipe are the body that is provided with a plurality of perforates from top to bottom, and said body a plurality of bore size are from top to bottom dwindled gradually.

7. wind-power electricity generation constituent sink according to claim 1 is characterized in that, said heat pipe heat-absorbing section, the heat release section outside all are equiped with fin.

8. wind-power electricity generation constituent sink according to claim 1 is characterized in that, said a plurality of heat pipes are that in-line arrangement is arranged or the fork arranged.

9. wind-power electricity generation constituent sink according to claim 1 is characterized in that, said heat pipe is through stationary barrier, fixed block and catch box, engine room cover fixed seal connection;

Said stationary barrier comprises following stationary barrier that is arranged at the catch box top open part and the last stationary barrier that is arranged at the engine room cover top open part;

Fixed block, following fixed block are installed, through last fixed block and last stationary barrier clamping, through fixed block and following stationary barrier clamping down on the said heat pipe.

10. a wind-power electricity generation constituent is used to treat cooling heat dissipation equipment and cools off, and it is characterized in that, comprises each the described sink of catch box, circulation means, supporting frame and claim 1-8 that is arranged in the engine room cover;

Said heat dissipation equipment to be cooled and circulation means, catch box join end to end through flexible pipe, and support frame as described above is used in engine room cover, supporting catch box.

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