Ultrasonic correction system and method for heliostat

A correction system, ultrasonic technology, applied in the field of ultrasonic correction systems for heliostats, can solve problems such as no major breakthroughs, high operation and maintenance costs, frequent corrections, etc., to achieve maximum use of power generation resources, low operation and maintenance costs, shorten The effect of the construction cycle

CN109916097AActive Publication Date: 2019-06-21ZHEJIANG SUPCON SOLAR TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2019-06-21

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Abstract

The invention discloses an ultrasonic correction system and method for a heliostat. Ultrasonic waves are emitted to the heliostat surface of the heliostat of which the posture needs to be corrected according to the characteristic that the ultrasonic waves propagate along a straight line and the ultrasonic wave ranging principle, reflected ultrasonic waves are received, correction values of the altitude angle and the azimuth angle of the heliostat are obtained by comparing the theoretical propagation time with the actual propagation time of the ultrasonic waves at different positions, and the heliostat is corrected and adjusted. According to the ultrasonic correction system and method for the heliostat, 24-hour uninterrupted work can be achieved and is not influenced by the construction progress of a heat absorber or a light spot rectifying plate, installing work, adjusting work and correcting work of a heliostat field can be synchronously conducted, the effect of shortening the construction period of a whole power station is obvious, and in the running period of the power station, normal work of the heliostat in the daytime can not be influenced when the heliostat is corrected at night. The ultrasonic correction system and method for the heliostat have the technical characteristics that the correction efficiency is high, correction can be conducted all day, the correction erroris small, the running and maintaining cost is low, and the correction precision is stable.
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Description

technical field

[0001] The invention belongs to the technical field of solar thermal power generation, and in particular relates to a heliostat ultrasonic correction system and method. Background technique

[0002] In the field of solar thermal power generation, tower-type solar thermal power generation technology has a high concentration multiple, high system efficiency, low heat loss, and is convenient for energy storage. It is a new type of clean power generation technology with strong competitiveness. Tower-type solar thermal power generation technology uses many heliostats to reflect solar heat radiation to the heat absorber placed on the top of the heat-absorbing tower, heat and store the heat-absorbing working fluid, and then use it according to the dispatching instructions of the power grid. The high-temperature and high-pressure steam generated by heat exchange drives the turbogenerator to generate electricity.

[0003] The heliostat is the key equipment of the tow...

Examples

Embodiment 1

[0048] see figure 1 , the present embodiment provides a heliostat ultrasonic calibration system, including: mobile fixed device, 3, ultrasonic measurement device, ultrasonic processing device 5, heliostat control device 6; wherein,

[0049] The ultrasonic measuring device, the ultrasonic processing device 5 and the heliostat control device 6 are installed and fixed on the mobile fixing device 3;

[0050] Ultrasonic measuring device, including at least three transmitting and receiving terminals 4, each transmitting and receiving terminal 4 is used to transmit ultrasonic waves to a correction point 2 of the heliostat 1, and receive the ultrasonic waves reflected by the correction point 2, wherein each transmitting and receiving terminal The ultrasonic waves emitted by 4 are ultrasonic waves of different frequencies;

[0051] The ultrasonic processing device 5 is used to receive the emission time point and the receiving time point of the ultrasonic wave fed back by the ultrasoni...

Embodiment 2

[0069] see figure 2 , the present embodiment provides a heliostat ultrasonic calibration method, comprising the following steps:

[0070] S1: Select at least three points of the heliostat as calibration points;

[0071] S2: Set the altitude angle and azimuth angle of the heliostat, adjust the heliostat to the initial orientation determined by the altitude angle and azimuth angle, and calculate the theoretical position coordinates of each calibration point according to the altitude angle and azimuth angle;

[0072] S3: Transmit ultrasonic waves to each calibration point, record the coordinates of the transmitting position of each beam of ultrasonic waves, and calculate the actual propagation time of each beam of ultrasonic waves according to the ultrasonic waves reflected by the heliostat received at the coordinates of the transmitting position;

[0073] S4: Calculate the theoretical propagation time of each beam of ultrasonic waves according to the coordinates of the emissio...