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Device for testing focal spots focused by solar parabolic concentrator

A testing device and paraboloid technology, applied in the field of solar energy utilization, can solve the problems of inability to guarantee photothermal conversion efficiency, inability to detect the effective width and focal line position of the mirror image focal spot, and the deviation of the condensing focal spot from the design index, etc.

Inactive Publication Date: 2011-04-20
张建城 +1
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  • Abstract
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Problems solved by technology

However, due to errors in the process of mirror body manufacturing, installation, truss manufacturing, and heat collector installation, the focal spot will eventually deviate from the design index, and the maximum light-to-heat conversion efficiency cannot be guaranteed.
At present, the method of testing the parabolic trough solar concentrating device mainly uses photographic equipment such as a camera to observe the position of the heat collecting tube through a photographic lens. Although the method is simple, it can only detect the mirror image position of the heat collecting tube reflected by the concentrating device, but not the mirror image. The effective width of the focal spot and the position of the focal line, especially in the initial stage of the development of trough solar thermal power generation in my country, urgently need to provide a simple test device and method, which can not only detect and debug the concentrating device installed on site, but also Gradually accumulate experience to prepare for the establishment of my country's parabolic spotlight detection standard

Method used

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  • Device for testing focal spots focused by solar parabolic concentrator
  • Device for testing focal spots focused by solar parabolic concentrator

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Embodiment Construction

[0010] The solar parabolic focusing focal spot test device is composed of a visible light laser transmitter, a laser test receiving target, and a fixed bracket. The visible light laser transmitter includes a semiconductor LD laser module, a focusing lens, a power supply circuit, etc., such as a laser pointer, a laser level, etc. Similar laser direct-beam point focus emitters that produce visible wavelengths of red, green, etc.

[0011] Laser test receiving targets can be test paper with scales, ground glass plates and translucent plastic plates, or laser receiving devices such as photoelectric laser silicon targets, laser grid targets, and high-sensitivity laser receivers.

[0012] The visible light laser emitter and the laser test receiving target are installed on the fixed bracket, and the bracket includes a vertical bracket and a horizontal bracket with slidable slots and fastening devices respectively. The visible light laser transmitter is installed on the vertical suppor...

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Abstract

The invention relates to a device for testing focal spots focused by a solar parabolic concentrator. The device takes full advantage of the linear beams generated by a semiconductor laser and tests the focused focal spots through reflection of a parabolic mirror. The device is simple and the method is feasible and is widely applied to various parabolic concentrators. The device belongs to the technical field of solar energy utilization.

Description

technical field [0001] The invention relates to a solar parabolic focusing focal spot testing device, which fully utilizes the linear beam generated by a semiconductor laser to test the focusing focal spot through the reflection of a parabolic mirror body. The device is simple and the method is easy to implement, and is widely applicable to various parabolic surfaces. Spotlight device. It belongs to the technical field of solar energy utilization. Background technique [0002] The establishment of a solar concentrating device is the basic technical means to realize the utilization of solar energy, especially in the solar parabolic trough solar concentrating power generation device, the parabolic concentrating device is mainly used to achieve focusing and complete light-to-heat conversion. Parabolic focusing belongs to line focusing and also belongs to mirror focusing. It requires the focusing device to have a clear image, and the mirror focal spot becomes a straight line of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M11/02
CPCG01M11/005
Inventor 张建城
Owner 张建城
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