CN203655541U - A cooling system for a nacelle of an offshore wind power generating set - Google Patents

Abstract

The utility model discloses a cabin cooling system of an offshore wind generating set, which comprises a cabin body, a support is arranged on the outer wall of the cabin body, a heat exchanger is arranged on the support, a heat medium cavity and a cold medium cavity are arranged in the heat exchanger, the hot medium cavity is provided with a hot medium cavity air inlet and a hot medium cavity air outlet, the cold medium cavity is provided with a cold medium cavity air inlet and a cold medium cavity air outlet, the wall of the engine room body is respectively provided with an engine room air outlet and an engine room air inlet, an engine room air outlet pipeline is connected between the engine room air outlet and the hot medium cavity air inlet, an engine room air inlet pipeline is connected between the hot medium chamber air outlet and the engine room air inlet, and an external circulation fan used for pumping out air entering the cold medium chamber from the cold medium chamber air inlet after heat exchange is arranged on the cold medium chamber air outlet. The present case simple structure easily realizes, and inside and outside air does not have direct contact, and the moisture can not get into the cabin originally internally.

Description

A cooling system for a nacelle of an offshore wind power generating set

[technical field]

The utility model relates to an engine room cooling system of an offshore wind power generating set.

[Background technique]

The environment of offshore wind turbines is harsher than that of onshore wind turbines: high temperature, high humidity and salty fog. While solving the heat dissipation problem of the engine room, attention must be paid to the anti-corrosion problem of the mechanical and electrical equipment inside the engine room.

At present, the heat dissipation of the conventional offshore wind turbine cabin is air-air cooling, that is, the external air filtered by the filter is sucked into the cabin by a centrifugal fan, and then discharged from the upper ventilation hole of the cabin, and the internal heat of the cabin is taken away during the discharge process. Although this method can effectively meet the heat dissipation requirements of the cabin, it will inevitably bring salt spray into the cabin. When the humidity reaches a certain value, it will cause corrosion to the machinery and electrical equipment in the cabin. In addition, some wind turbines use air-to-air cooling plus a dehumidifier to cool the nacelle. This method can meet the needs of heat dissipation and anti-corrosion protection under certain conditions, but the dehumidifier must work under the condition of power on, and the price is relatively expensive. In addition, some wind turbines use industrial air conditioners to dissipate heat in the engine room. This method can meet the needs of models with low power. However, for high-power fans, the power of the air conditioner is required to be large enough, but its volume is relatively insufficient to meet the installation space, and its price is also high. relatively expensive.

Therefore, it is necessary to solve the above problems.

[utility model content]

The utility model overcomes the deficiencies of the above-mentioned technologies and provides a cooling system for a nacelle of an offshore wind power generating set. A heat exchanger is arranged outside the nacelle, and a heat medium chamber and a cooling chamber for mutual heat exchange are arranged in the heat exchanger. The medium chamber enables the air in the cabin to exchange heat with the air outside the cabin in the cold medium chamber through the hot medium chamber, and the inside and outside air are not directly contacted and mixed, which effectively prevents external moisture from entering the cabin while realizing heat exchange.

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

A nacelle cooling system for an offshore wind power generating set, comprising a nacelle body 1 for installing a wind power generating set, a bracket 2 is arranged on the outer wall of the nacelle body 1, a heat exchanger 3 is installed on the bracket 2, and the heat exchanger 3 is installed on the outer wall of the nacelle body 1. The heat medium chamber and the cold medium chamber that are isolated from each other for heat exchange are arranged in the exchanger 3, and the heat medium chamber air inlet 31 and the heat medium chamber air outlet 32 are arranged on the heat medium chamber. The cooling medium chamber is provided with a cooling medium chamber air inlet 33 and a cooling medium chamber air outlet 34, and the cabin body 1 wall is respectively provided with a cabin air outlet 11 and a cabin air inlet 12, and the cabin air outlet 11 and The engine room air outlet duct 13 is connected between the heat medium chamber air inlets 31, the engine room air inlet duct 14 is connected between the heat medium chamber air outlet 32 and the engine room air inlet 12, and the cold medium chamber air outlet 34 An external circulation fan 35 for extracting the air entering the cooling medium chamber from the cooling medium chamber air inlet 33 after heat exchange is provided on the top.

The number of the cabin air outlet 11, the cabin air outlet duct 13, and the heat medium chamber air inlet 31 is two, and the two cabin air outlets 11 are respectively connected with the heat medium chamber air inlet 31 through the cabin air outlet duct 13 .

As mentioned above, the two nacelle air outlets 11 are respectively arranged on the two side walls of the nacelle body 1 .

A hot air mixing section 36 is provided at the front end of the heat medium chamber, and the air inlets 31 of the two heat medium chambers are both arranged on the hot air mixing section 36 .

The air intake duct 14 of the cabin is provided with an internal circulation fan for accelerating the air flow velocity.

Compared with the prior art, the beneficial effects of the utility model are:

1. By setting a heat exchanger outside the engine room body, the heat exchanger is equipped with a heat medium chamber and a cold medium chamber for mutual heat exchange, so that the air in the engine room body passes through the heat medium chamber and the cold medium chamber in the engine room The air outside the body conducts heat exchange. During the whole process, the inside and outside air are not directly contacted and mixed, so as to achieve heat exchange and effectively prevent external moisture from entering the cabin body, so as not to affect the wind turbine in the cabin body;

2. The air outlet of the cold medium chamber is equipped with an external circulation fan for extracting the air entering the cold medium chamber from the air inlet of the cold medium chamber after heat exchange, so as not to cause wind impact on the cold medium chamber , speed up the air flow, take away more heat, and improve heat exchange efficiency;

3. There is an internal circulation fan in the air inlet duct of the engine room, which can accelerate the air flow speed in the engine room and improve the heat exchange efficiency without causing wind impact on the heat medium chamber;

4. The two side walls of the engine room body are respectively equipped with engine room air outlets, which are respectively connected to the air inlet of the heat medium chamber through the engine room air outlet pipes, so that the air in the engine room body can flow in a wide range;

5. By setting the hot air mixing section at the front end of the heat medium chamber, the air inlets of the two heat medium chambers are both located in the hot air mixing section, so that the hot air enters the heat medium chamber together, which can effectively improve the heat dissipation efficiency.

[Description of drawings]

Fig. 1 is an exploded view of the utility model.

FIG. 2 is a rear view of FIG. 1 .

[Detailed ways]

The features of the utility model and other relevant features are further described in detail below in conjunction with the accompanying drawings through the embodiments, so as to facilitate the understanding of those skilled in the art:

As shown in Figure 1, a cooling system for a nacelle of an offshore wind power generating set is characterized in that it includes a nacelle body 1 for installing a wind power generating set, a bracket 2 is provided on the outer wall of the nacelle body 1, and a bracket 2 is installed on the bracket 2. There is a heat exchanger 3, which is provided with a heat medium chamber and a cold medium chamber isolated from each other for heat exchange, and the heat medium chamber is provided with a heat medium chamber air inlet 31 and a heat medium chamber. A medium chamber air outlet 32, the cold medium chamber is provided with a cold medium chamber air inlet 33 and a cold medium chamber air outlet 34, and the cabin body 1 wall is respectively provided with a cabin air outlet 11 and a cabin air inlet 12. The engine room air outlet 11 and the heat medium chamber air inlet 31 are connected to the engine room air outlet duct 13, and the engine room air inlet duct 14 is connected between the heat medium chamber air outlet 32 and the engine room air inlet 12, The cooling medium chamber air outlet 34 is provided with an external circulation fan 35 for extracting the air entering the cooling medium chamber from the cooling medium chamber air inlet 33 after heat exchange.

The number of the cabin air outlet 11, the cabin air outlet duct 13, and the heat medium chamber air inlet 31 is two, and the two cabin air outlets 11 are respectively connected with the heat medium chamber air inlet 31 through the cabin air outlet duct 13 .

Two nacelle air outlets 11 are respectively arranged on the two side walls of the nacelle body 1 .

As mentioned above, the air outlets 11 are respectively provided on the two side walls of the nacelle body 1, which are respectively connected to the air inlets 31 of the heat medium chamber through the nacelle air outlet pipes 13, so that the air in the nacelle body 1 can flow in a wide range.

A hot air mixing section 36 is provided at the front end of the heat medium chamber, and the air inlets 31 of the two heat medium chambers are both arranged on the hot air mixing section 36 .

As mentioned above, by setting the hot air mixing section 36 at the front end of the heat medium chamber, the air inlets 31 of the two heat medium chambers are both arranged in the hot air mixing section 36, so that the hot air enters the heat medium chamber together, which can effectively improve the heat dissipation efficiency.

The air intake duct 14 of the cabin is provided with an internal circulation fan for accelerating the air flow velocity.

The heat exchanger 3 described in this case may be a plate heat exchanger, and the heat exchange between the hot medium chamber and the cold medium chamber is realized through a plate heat exchange structure.

The working principle of this case is as follows:

Driven by the internal circulation fan, the air in the nacelle body 1 enters the heat medium chamber from the air inlet 31 of the heat medium chamber, and driven by the external circulation fan 35, the external air enters the cold medium chamber from the air inlet 33 of the cold medium chamber In this way, the air entering the heat medium chamber exchanges heat with the air entering the cold medium chamber, and then the air entering the heat medium chamber cools down and re-enters the cabin body 1 from the air outlet 32 of the heat medium chamber, and the heat is transferred from the cold medium The air out of the chamber air outlet 34 is taken away.

As mentioned above, by setting the heat exchanger 3 outside the nacelle body 1, the heat exchanger 3 is provided with a heat medium chamber and a cold medium chamber for mutual heat exchange, so that the air in the nacelle body 1 passes through the heat medium chamber and the cold medium chamber. In the cold medium chamber, the air outside the nacelle body 1 performs heat exchange. During the whole process, the inside and outside air do not directly contact and mix, so as to realize heat exchange and effectively prevent external moisture from entering the nacelle body, so that the wind force in the nacelle body 1 will not be affected. The generator set is affected.

And the effect that outer circulation fan 35 is arranged on cold medium chamber air outlet 34 is to accelerate air flow velocity while not causing wind impact to cold medium chamber, take away more heat, improve heat exchange efficiency; Internal circulation fan is arranged at The function of the cabin air inlet duct 14 is to accelerate the flow velocity of the cabin air and improve the heat exchange efficiency while not causing wind impact to the heat medium chamber.

As mentioned above, what this case protects is a cooling system for a nacelle of an offshore wind turbine, and all technical solutions with the same or similar structure as this case should be deemed to fall within the protection scope of this case.

Claims (5)

1. A nacelle cooling system for an offshore wind power generating set, characterized in that it includes a nacelle body (1) for installing a wind power generating set, a bracket (2) is provided on the outer wall of the nacelle body (1), and the bracket ( 2) A heat exchanger (3) is installed on it, and a heat medium chamber and a cold medium chamber isolated from each other for heat exchange are arranged inside the heat exchanger (3), and a heat medium chamber is provided on the heat medium chamber. The medium chamber air inlet (31) and the heat medium chamber air outlet (32), the cold medium chamber is provided with the cold medium chamber air inlet (33) and the cold medium chamber air outlet (34), the The engine room air outlet (11) and the engine room air inlet (12) are respectively arranged on the wall of the engine room body (1), and the engine room air outlet duct is connected between the engine room air outlet (11) and the heat medium chamber air inlet (31) (13), the engine room air inlet duct (14) is connected between the heat medium chamber air outlet (32) and the engine room air inlet (12), and the cold medium chamber air outlet (34) is provided with a The air entering the cold medium chamber from the air inlet (33) of the cold medium chamber is drawn out by an external circulation fan (35) after heat exchange. 2. A nacelle cooling system for an offshore wind power generating set according to claim 1, characterized in that the air outlet (11) of the nacelle, the air outlet duct (13) of the nacelle, and the air inlet (31) of the heat medium chamber are The number is two, and the two engine room air outlets (11) are respectively connected to the heat medium chamber air inlet (31) through the engine room air outlet duct (13). 3. A nacelle cooling system for an offshore wind power generating set according to claim 2, characterized in that the two nacelle air outlets (11) are respectively arranged on the two side walls of the nacelle body (1). 4. A cooling system for a nacelle of an offshore wind power generating set according to claim 2, characterized in that a hot air mixing section (36) is provided at the front end of the heat medium chamber, and two heat medium chamber air inlets (31) All are located on the hot blast mixing section (36). 5. A cooling system for a nacelle of an offshore wind power generating set according to any one of claims 1-4, characterized in that the nacelle air intake duct (14) is provided with an internal circulation fan for accelerating air flow.

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