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Air heat exchanger leakage detection system and method and wind driven generator

A technology for air heat exchangers and wind power generators, which is applied in the direction of wind power generators, wind power generator monitoring, and wind power generation. , It is impossible to find leaking parts and other problems in the first time, so as to improve the availability, realize remote and regular online monitoring, and reduce losses

Active Publication Date: 2017-05-31
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology has poor ability to accurately judge and timely capture whether the leakage problem of the heat exchanger occurs, so that the leakage problem cannot be found in the first time to reduce the risk of potential component failure in the future
[0006] In the air-to-air cooling system of existing wind turbines, there are few solutions for leak detection and online regular monitoring of heat exchangers in wind farms

Method used

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  • Air heat exchanger leakage detection system and method and wind driven generator
  • Air heat exchanger leakage detection system and method and wind driven generator
  • Air heat exchanger leakage detection system and method and wind driven generator

Examples

Experimental program
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Effect test

Embodiment 1

[0076] Such as Figure 1-5 As shown, this embodiment provides an air heat exchanger leakage detection system for an air cooling system of a device to be cooled (for example: a wind power generator), including an air heat exchanger 10, a first air valve 21, a first fan 22. The pressure sensor 11 and the controller 30, wherein:

[0077] An air heat exchanger 10 is installed in the air cooling system for exchanging heat between the air cooling system and the external environment;

[0078] The first air valve 21 is installed in the internal circulation air passage 24 of the air cooling system, and is located at a position close to the side of the air heat exchanger 10, and is used to close the internal circulation air passage 24; when the first air valve 21 is opened When the air cooling system is in normal operation, when the first air valve 10 is closed, the gas in the internal circulation air duct 24 can be prevented from circulating in the internal circulation air duct 24 to ...

Embodiment 2

[0103] Such as Figure 1-5 As shown, in conjunction with the detection method of the air heat exchanger leak detection system provided in Example 1, the detection method includes the following steps:

[0104] Close the first air valve 21 to close the internal circulation air duct 24, preventing the gas in the internal circulation air duct 24 from circulating in the internal circulation air duct 24;

[0105] The controller 30 controls the first fan 22 to operate at a predetermined speed Ni, so that there is a pressure difference between the inner and outer surfaces of the air heat exchanger 10, and the pressure difference is used to detect the leakage of the air heat exchanger 10, that is, in the air heat exchange In the case of leaking device 10, the pressure difference can cause gas exchange between the inner and outer surfaces of the air heat exchanger, thereby facilitating the detection of the pressure sensor 11 inside the inner circulation air duct 24; wherein i is a natur...

Embodiment 3

[0146] On the basis of Embodiment 1 and Embodiment 2, this embodiment provides a wind power generator, including the wind power generator air heat exchanger leakage detection system provided in Embodiment 1 above or using the wind power generator provided in Embodiment 2 above Air heat exchanger leak detection method.

[0147] Figure 2-Figure 5 An example of detecting the leakage of the air heat exchanger 10 of the wind power generator in four different ways is shown, with figure 2 Shown as an example:

[0148] figure 2 It is a schematic structural diagram of detection state 1 of the wind turbine air heat exchanger leakage detection system according to the embodiment of the present invention, wherein:

[0149] First, the first fan 22 draws air in a direction away from the air heat exchanger 10 at a speed of Ni, so that the internal circulation channel 24 inside the air heat exchanger 10 forms a negative pressure; at this time, different preset speeds are detected by the ...

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PUM

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Abstract

The invention provides an air heat exchanger leakage detection system and method and a wind driven generator. The air heat exchanger leakage detection system comprises an air heat exchanger, a first air valve, a first fan, a pressure sensor and a controller. The air heat exchanger is used for carrying out heat exchange between an air cooling system and external environment. The first air valve is used for closing an inner circulation air flue of the air cooling system. The first fan is installed in the inner circulation air flue of the air cooling system. The pressure sensor is installed in the inner circulation air flue of the air cooling system and used for detecting gas pressure. The controller is used for controlling the rotating speed and / or direction of the first fan and receiving pressure data detected by the pressure sensor. According to the air heat exchange leakage detection system, the problems that the air heat exchanger is difficult to overhaul and leakage of the air heat exchanger cannot be found in time in practical application of the wind driven generator are solved, the cooling system can be conveniently overhauled, and fault problem can be found in time.

Description

technical field [0001] The invention belongs to the technical field of wind power generators, and in particular relates to a leakage detection system and method for an air heat exchanger of a wind power generator and a wind power generator. Background technique [0002] Air cooling is a commonly used cooling method for wind turbines. The air-to-air cooling system (referred to as "air-to-air cooling system") uses air as the cooling medium. Compared with water-cooling systems and air-to-water cooling systems, it is more reliable, and the operation and maintenance costs are relatively lower. Low. Once the cooling water of the water cooling system leaks into the generator or other electrical equipment, it will seriously affect the insulation or other performance of the generator or electrical equipment, and in severe cases, it may cause the generator or electrical equipment to burn out instantly. In contrast, the medium leakage of the air-to-air cooling system will not cause su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D17/00F03D80/60
CPCF05B2260/20Y02E10/72
Inventor 刘军卫范文寿李锦辉
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD