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Focal Spot Offset Test Method

A test method and offset technology, which are applied in the directions of measuring heat, measuring devices, instruments, etc., can solve the problems of inability to monitor the offset of the focal spot center in real time, limitations of applicability and practicability, and low accuracy, and achieve a simple structure. , The effect of strong timeliness and strong applicability

Inactive Publication Date: 2018-12-21
INNER MONGOLIA UNIV OF TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method is cumbersome, cannot monitor the offset of the focal spot center in real time, and has low precision
Therefore, the applicability and practicality are limited

Method used

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  • Focal Spot Offset Test Method

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Experimental program
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Embodiment 1

[0024] Figure 1 to Figure 4 A specific embodiment of the invention is shown in which figure 1 It is a structural schematic diagram of the present invention; figure 2 It is a schematic diagram of the bottom surface structure of the test target in the present invention; image 3 It is focal spot offset and fitting curve figure in the present invention; Figure 4 It is the test temperature distribution diagram of the bottom surface of the test target in the present invention. exist Figure 4 , the central temperature measuring point is T 0 , the temperature measuring points to the left of the center are T 1 ’, T 2 ’, T 3 ’, the temperature measuring points to the right of the center are T 1 , T 2 , T 3 .

[0025] See Figure 1 to Figure 4 , a focal spot offset test method, comprising a trough concentrator 1, a test target 2, an armored thermocouple 3, a TP700 data transmission system 4 and a fixing frame 5, and the armored thermocouple is arranged on the test target...

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Abstract

The invention discloses a method for testing focal spot offset, which comprises a trough concentrator, a test target, an armored thermocouple, a TP700 data transmission system and a fixing frame. The method includes the following steps: step A, according to the armored thermocouple Obtain the measured data of the temperature field distribution of the focal spot, and determine the offset direction of the focal spot center according to the scale of the bottom of the test target; Step B, use a Gaussian function to perform fitting analysis on the temperature distribution curve to obtain the offset of the focal spot center; Step C, The function relationship expression is obtained by combining the focal spot offset obtained by fitting with the moving distance of the test target; step D, real-time detection of the focal spot offset, adjusting the receiving position of the heat absorber and tracking the operating status of the system. In the present invention, the focal spot center offset test target has a simple structure, and is stable and reliable to use. At the same time, the Gaussian function fitting principle is used to determine the focal spot center offset, which greatly improves the calculation accuracy, strong timeliness, and good stability in use. Strong applicability.

Description

technical field [0001] The invention belongs to the technical field of line-focusing solar energy concentrating and heat-collecting systems, and in particular relates to a focal spot offset testing method. Background technique [0002] Due to the tracking error and the influence of the sun's incident angle, the center of the focal spot of the trough concentrator will shift, and the magnitude of the shift directly affects the light-thermal coupling capability. Therefore, it is very important to determine the offset of the focal spot center. [0003] At present, the determination of the offset of the focal spot center mainly adopts the establishment of a geometric mathematical model of the concentrator, and uses the geometric relationship to solve the offset of the focal spot center. This method is cumbersome, cannot monitor the offset of the focal spot center in real time, and has low precision. Therefore, the applicability and practicality are limited. Contents of the in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24S50/20G01K7/02
CPCG01K7/02Y02E10/40
Inventor 王志敏田瑞赵明智齐井超苏擘郭枭宋力王亚辉
Owner INNER MONGOLIA UNIV OF TECH