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Hub Cooling Control Method and Device

A technology of cooling device and control method, applied in pump control, cooling/ventilation/heating transformation, final product manufacturing, etc., can solve the problems of air-cooled generator set shutdown, poor air flow, small space, etc. space, enhance air flow, and facilitate the effect of heat dissipation

Inactive Publication Date: 2015-12-09
CHINA CREATIVE WIND ENERGY +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small space of the hub and poor air flow, it is not conducive to the heat dissipation of the pitch system, which affects the performance of the pitch system
In addition, the control system of the wind turbine only has the switching signal of the wheel hub temperature alarm, and cannot detect the actual temperature value in the hub. If the temperature of the pitch control system is too high, it will also cause the shutdown of the air-cooled generator set, resulting in economic losses for the wind farm.

Method used

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  • Hub Cooling Control Method and Device
  • Hub Cooling Control Method and Device
  • Hub Cooling Control Method and Device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: as figure 1 As shown, the pitch controller, temperature control board and temperature sensor in this example all use one, and the cooling fan assembly is divided into three groups. The control method of the hub cooling device is as follows: figure 2 shown, including the following steps:

[0028] The first step: Measure the current temperature value t through the temperature sensor placed in the hub, and transmit it to the pitch controller through the temperature control board (CCWE-MDS-TEM.CON). The control system of the wind turbine is connected with the pitch control The connection of the controller to read the current temperature value t; wherein the control system and the pitch control system of the wind turbine are both existing structures;

[0029] Step 2: By comparing the read current temperature value t with the temperature setting value T, when t≥T, output Q1 and Q2, where Q1 is the command to control the cooling fan 3, and Q2 is the command to ...

Embodiment 2

[0033] Embodiment 2: In order to better control its cooling effect, the difference between this embodiment and Embodiment 1 is that each blade described in this embodiment has a pitch controller, a temperature control board and a temperature sensor, and the temperature sensors are respectively placed At the connection between the three blades and the hub, compare the temperature values ​​t1, t2, and t3 of the temperature sensors at the three blades with the temperature setting value T, and when any t1 / t2 / t3≥T, output Q11 / Q12 / Q13, Q21 / Q22 / Q23, where Q11 / Q12 / Q13 is the command to control three cooling fans, and Q21 / Q22 / Q23 is the command to control three electric check air valves; each blade passes through the pitch controller The connected temperature control board controls the opening and closing of the corresponding electric check valve; when t1, t2, t3 are less than T, the temperature control board does not output signals Q11 / Q12 / Q13 and Q21 / Q22 / Q23, and the program ends. T...

Embodiment 3

[0034] Embodiment 3: The difference between this example and Embodiment 2 is that this example adopts a pitch controller, three temperature sensors, which are respectively arranged at the connection between the hub and the blade, and adopts a temperature control board, three cooling fans and three The electric non-return air valve, three temperature sensors are respectively connected with the temperature control board. This example can also better display and control the temperature.

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Abstract

A hub cooling device and a control method thereof belong to the technical field of wind power generation. The current temperature value t is measured through a temperature sensor arranged in a hub and transmitted to a variable-pitch controller through a temperature control board, and a control system of a wind driven generator set is connected with the variable-pitch controller to read the current temperature value t; the read current temperature value t and a temperature set value T are compared, and when t is more than or equal to T, Q1 and O2 are output, wherein Q1 controls instructions of a cooling fan, and Q2 controls instructions of an electric non-return valve; when t is smaller than T, the temperature control board does not output signals Q1 and Q2, and then the program finishes. According to the invention, the on / off of the electric non-return valve is controlled through the variable-pitch controller to realize communication and cut-off between the space of the hub and the space in a blade, so that the heat dissipation space of a variable-pitch system is increased and the radiating effect is good.

Description

technical field [0001] The invention belongs to the technical field of wind power industry, and in particular relates to a hub cooling control method and a device thereof. Background technique [0002] The hub is the hub of the wind wheel and the connection between the blade root and the main shaft. All the force transmitted from the blades is transmitted to the transmission system through the hub, and then to the objects driven by the wind turbine. At the same time, the hub is also where the pitch control system makes the blades pitch and rotate. [0003] At present, the pitch system of wind turbines is mainly installed in the hub, and the cooling method is mostly air-cooled. However, due to the small space of the hub and poor air flow, it is not conducive to the heat dissipation of the pitch system, which affects the performance of the pitch system. Moreover, the wind turbine control system only has the switch signal of the hub temperature alarm, and cannot detect the a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D11/00H05K7/20F04D27/00
CPCY02E10/722Y02P70/523Y02P70/50
Inventor 陈效国刘衍选蔡晓峰赵炳胜
Owner CHINA CREATIVE WIND ENERGY