CN212318231U - Cooling arrangement for a pitch system in a wind turbine hub - Google Patents
Cooling arrangement for a pitch system in a wind turbine hub Download PDFInfo
- Publication number
- CN212318231U CN212318231U CN202020927029.5U CN202020927029U CN212318231U CN 212318231 U CN212318231 U CN 212318231U CN 202020927029 U CN202020927029 U CN 202020927029U CN 212318231 U CN212318231 U CN 212318231U
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- flow fan
- axial flow
- hub
- air
- air inlet
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
A cooling device of a variable pitch system in a hub of a wind turbine relates to the technical field of wind power generation and solves the problem of poor heat dissipation of the existing variable pitch system, and the cooling device comprises a temperature sensor, a controller, an air inlet axial flow fan and an air outlet axial flow fan; the front surface of the engine room cover is provided with an air inlet axial flow fan and an air outlet axial flow fan, and the circulation of air in the hub and air in the engine room can be formed by the air inlet axial flow fan and the air outlet axial flow fan; the temperature sensor is arranged in the hub, and the controller controls the on-off of the air inlet axial flow fan and the air exhaust axial flow fan according to the temperature in the hub detected by the temperature sensor. The utility model discloses an axial fan and exhaust axial fan have realized the intercommunication of cabin space and wheel hub inner space, constitute air current circulation between cabin and wheel hub, have increased the radiating space of the interior oar system that becomes of wheel hub, reduce the oar system temperature that becomes, and the radiating effect is good, reduces wind turbine fault rate.
Description
Technical Field
The utility model relates to a wind power generation technical field, the cooling device of the oar system that becomes in concretely relates to wind turbine wheel hub.
Background
The hub is the hub of the wind wheel and is also the connecting piece of the root of the blade and the main shaft. All the force transmitted from the blades is transmitted to the transmission system through the hub and then transmitted to the object driven by the wind turbine. And meanwhile, the hub is also the position where the pitch control system enables the blades to rotate in a pitching mode. At present, a variable pitch system of a wind generating set is mainly installed in a hub, the hub is directly connected with an engine room and an engine room cover, an air cooling mode is mostly adopted in a cooling mode, a cooling fan is installed in each axle box of the variable pitch system, and when the temperature is high in summer, the internal fan cannot sufficiently dissipate heat, so that a wind turbine reports a high-temperature fault and the fan stops running. However, the space of the hub is small, the air mobility is poor, heat dissipation of the variable pitch system is not facilitated, and the performance of the variable pitch system is affected. If the temperature of the variable pitch system is too high, the air-cooled generator set can be stopped, and economic loss of the wind power plant is caused.
SUMMERY OF THE UTILITY MODEL
In order to solve the poor problem of the oar system heat dissipation that becomes, the utility model provides a cooling device of the oar system that becomes in the wind turbine wheel hub.
The utility model discloses a solve the technical scheme that technical problem adopted as follows:
a cooling device of a pitch system in a hub of a wind turbine, the hub of the wind turbine being connected to a front surface of a nacelle cover, the cooling device comprising a temperature sensor, a controller, an axial inlet flow fan and an axial exhaust flow fan; the front surface of the engine room cover is provided with an air inlet axial flow fan mounting hole and an air outlet axial flow fan mounting hole, the air inlet axial flow fan is mounted on the air inlet axial flow fan mounting hole, the air outlet axial flow fan is mounted on the air outlet axial flow fan mounting hole, and the circulation of air in a hub and air in the engine room can be formed through the air inlet axial flow fan and the air outlet axial flow fan; the temperature sensor is arranged in the hub and connected with the controller, the controller is connected with the air inlet axial flow fan and the air exhaust axial flow fan, the temperature sensor detects the temperature in the hub and sends a detection result to the controller, and the controller receives the detection result and controls the on-off of the air inlet axial flow fan and the air exhaust axial flow fan according to the detection result.
Furthermore, the flow rates of the air inlet axial flow fan and the air exhaust axial flow fan are not less than 2000m3/h。
Further, the controller is mounted in the hub.
Further, the controller is mounted on a front surface of the nacelle cover.
The utility model has the advantages that:
the utility model discloses an axial fan and exhaust axial fan have realized the intercommunication of cabin space and wheel hub inner space, constitute that the air current advances one by one between cabin and wheel hub, guarantee the air current circulation, have increased the radiating space of the interior oar system that becomes of wheel hub, reduce the oar system temperature that becomes, and the radiating effect is good, reduces the wind turbine fault rate.
Drawings
Fig. 1 is a schematic view of a cooling arrangement for a pitch system in a wind turbine hub according to the present invention.
Figure 2 is a schematic view of the nacelle cover structure of the cooling device of the pitch system in a wind turbine hub according to the present invention
In the figure: 1. hub, 2, cabin cover, 2.1, front surface, 3, air inlet axial flow fan mounting holes, 4, exhaust axial flow fan mounting holes.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
The utility model discloses the cooling device of the change oar system in wind turbine wheel hub 1, wheel hub 1 direct connection wind turbine's cabin cover 2, as figure 1, wheel hub 1 connects cabin cover 2 front surface 2.1. The cooling device comprises a temperature sensor, a controller, an air inlet axial flow fan and an air exhaust axial flow fan.
As shown in fig. 2, an intake axial flow fan mounting hole 3 and an exhaust axial flow fan mounting hole 4 are formed in the nacelle cover 2, and the intake axial flow fan mounting hole 3 and the exhaust axial flow fan mounting hole 4 are formed in an end face of the nacelle cover 2 at a connection end of the nacelle cover 2 and the hub 1, that is, on a front surface 2.1 of the nacelle cover 2. The air inlet axial flow fan is arranged on the air inlet axial flow fan mounting hole 3, and the exhaust axial flow fan is arranged on the exhaust axial flow fan mounting hole 4. The air inlet axial flow fan and the air outlet axial flow fan form air circulation of the hub 1 and the engine room.
The temperature sensor is placed in the hub 1. The controller is mounted in the hub 1. The temperature sensor is connected with the controller, and the controller is connected with the air inlet axial flow fan and the air exhaust axial flow fan. The temperature sensor detects the temperature in the hub 1 and sends the detection result to the controller, and the controller receives the detection result and controls the on and off of the air inlet axial flow fan and the air outlet axial flow fan according to the detection result.
The air inlet axial flow fan and the air outlet axial flow fan can be symmetrically arranged relative to the central line of the connecting end surface.
The controller may also be mounted on the nacelle cover 2 end face at the connection end of the nacelle cover 2 and the hub 1.
According to the calculation, the overall heating value of the variable pitch system is 3-5.4 kW, and the total heating value Q of the variable pitch system is about 6kW by considering the allowance coefficient of 1.1 times. The air volume of the fan arranged on the hub 1 can be calculated according to the following formula:
G＝3600*Q/Cp*ρ*Δt
in the formula: g is the required air quantity, and the unit is m3H; q is total heating value of a variable pitch system, and the unit is kW; cpThe specific heat of air is expressed in kJ/(kg. DEG C); rho is the air density in kg/m3(ii) a Delta t is the temperature difference between the inside and the outside of the hub 1 and has a unit of ℃.
When the unit operation environment temperature is 40 ℃, the temperature in the hub 1 is set to be not more than 50 ℃, and the following calculation results are obtained:
G＝(3600·Q)/(Cp·ρ·Δt)＝(3600×6)/(1.005*2*10)≈1074m3/h
therefore, it is not only easy to useThe flow rates of the air inlet axial flow fan and the air exhaust axial flow fan are not less than 1074m3The flow rates of the inlet axial flow fan and the exhaust axial flow fan are not less than 2000m in the embodiment3/h。
The controller is of an existing structure and comprises a receiving module, a judging module and a control module which are connected in sequence, the detection result of the temperature sensor of the receiving module is transmitted to the judging module to judge whether the detection result exceeds a threshold value, if the detection result exceeds the threshold value, the air inlet axial flow fan and the air exhaust axial flow fan are started through the control module, and if the detection result does not exceed the threshold value, the control module controls the air inlet axial flow fan and the air exhaust axial flow fan to be closed.
The utility model discloses an axial fan and exhaust axial fan have realized the intercommunication of cabin space and 1 inner space of wheel hub, constitute one into one out of air current between cabin and wheel hub 1, guarantee the air current circulation, can realize under the prerequisite that can not influence other devices in the cabin in axial fan and exhaust axial fan's position of admitting air, increased in the wheel hub 1 and become the radiating space of oar system, reduce and become oar system temperature, the radiating effect is good, reduce the wind turbine fault rate.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. Cooling device of a pitch system in a hub of a wind turbine, said hub (1) of the wind turbine being connected to a front surface (2.1) of a nacelle cover (2), characterized in that the cooling device comprises a temperature sensor, a controller, an axial inlet flow fan and an axial outlet flow fan; an air inlet axial flow fan mounting hole (3) and an air outlet axial flow fan mounting hole (4) are formed in the front surface (2.1) of the engine room cover (2), the air inlet axial flow fan is mounted on the air inlet axial flow fan mounting hole (3), the air outlet axial flow fan is mounted on the air outlet axial flow fan mounting hole (4), and circulation of air in the hub (1) and air in the engine room can be formed through the air inlet axial flow fan and the air outlet axial flow fan; the temperature sensor is arranged in the hub (1) and connected with the controller, the controller is connected with the air inlet axial flow fan and the air exhaust axial flow fan, the temperature sensor detects the temperature in the hub (1) and sends a detection result to the controller, and the controller receives the detection result and controls the on-off of the air inlet axial flow fan and the air exhaust axial flow fan according to the detection result.
2. The cooling apparatus for a pitch system in a wind turbine hub according to claim 1, wherein the flow rates of said axial inlet and axial exhaust fans are not less than 2000m3/h。
3. Cooling arrangement for a pitch system in a wind turbine hub according to claim 1, where said controller is mounted in the hub (1).
4. Cooling arrangement for a pitch system in a wind turbine hub according to claim 1, characterised in that the controller is mounted on the front surface (2.1) of the nacelle cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020927029.5U CN212318231U (en) | 2020-05-28 | 2020-05-28 | Cooling arrangement for a pitch system in a wind turbine hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020927029.5U CN212318231U (en) | 2020-05-28 | 2020-05-28 | Cooling arrangement for a pitch system in a wind turbine hub |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212318231U true CN212318231U (en) | 2021-01-08 |
Family
ID=74022810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020927029.5U Expired - Fee Related CN212318231U (en) | 2020-05-28 | 2020-05-28 | Cooling arrangement for a pitch system in a wind turbine hub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212318231U (en) |
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2020
- 2020-05-28 CN CN202020927029.5U patent/CN212318231U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210108 |