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Wind Turbine Hydraulic Pitch Test Bench Loading Hydraulic System

A technology for wind turbines and hydraulic systems, applied in engine testing, machine/structural component testing, mechanical equipment, etc., can solve problems such as low dynamic response frequency of proportional relief valves, achieve accurate and reliable loads, and meet system loading requirements The effect of characteristic requirements and high response frequency

Active Publication Date: 2018-07-03
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

[0003] The loading hydraulic system of the traditional wind turbine hydraulic pitch test bench can simulate the operating load of the wind turbine. Generally, a proportional relief valve is used in the system, but the dynamic response frequency of the proportional relief valve is low.

Method used

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  • Wind Turbine Hydraulic Pitch Test Bench Loading Hydraulic System

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Embodiment Construction

[0016] Now, an exemplary embodiment of the present invention is described in detail, and examples thereof are shown in the accompanying drawings, in which the same reference numerals always indicate the same components.

[0017] figure 1 It is a schematic diagram showing the loading hydraulic system 100 of the hydraulic pitch test bench of a wind turbine generator according to an exemplary embodiment of the present invention.

[0018] According to an exemplary embodiment of the present invention, the loading hydraulic system 100 of the hydraulic pitch test bench of a wind turbine generator includes a hydraulic oil tank 1, a hydraulic pump 2, a motor 3, a filter 4, a first electromagnetic reversing valve 5, an overflow valve 6, a first A one-way valve 7.1, a second one-way valve 7.2, a third one-way valve 7.3, a proportional directional valve 8, a stop valve 9, an accumulator assembly 10, a first pressure sensor 11.1, a second pressure sensor 11.2, and a third pressure Sensor 11.3,...

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Abstract

The invention provides a loading hydraulic system for a hydraulic variable-pitch test stand of a wind generating set. The loading hydraulic system for the hydraulic variable-pitch test stand of the wind generating set comprises a hydraulic oil tank (1), a hydraulic pump (2), a first electromagnetic directional valve (5), a first one-way valve (7.1), a second one-way valve (7.2), a third one-way valve (7.3), a proportional direction valve (8), a stop valve (9), an energy accumulator assembly (10), a first pressure sensor (11.1), a second pressure sensor (11.2), a third pressure sensor (11.3), a second electromagnetic directional valve (12), a first proportional overflow valve (13.1), a second proportional overflow valve (13.2) and a load oil cylinder (14).

Description

Technical field [0001] This application relates to the field of wind power generation, and more specifically, to a hydraulic system for loading a hydraulic pitch test bench of a wind power generator set. Background technique [0002] With the development of wind turbines in the direction of large-scale, the application of hydraulic pitch systems in wind turbines has become more and more extensive due to the advantages of high power density. Therefore, it becomes more and more important to understand the characteristics of the hydraulic pitch system and master the operating rules of the hydraulic pitch system. The most direct and simple way to understand the hydraulic pitch system is to establish a related test bench, and master the characteristics of the hydraulic pitch system through experimental research. [0003] The loading hydraulic system of the traditional wind turbine hydraulic pitch test bench can simulate the operating load of the wind turbine. Generally, a proportional ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B11/02F15B11/08F15B1/027G01M15/02
CPCF15B1/0275F15B11/02F15B11/08F15B2211/89G01M15/02
Inventor 李萌朱兵苏振年
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD