Solar heat collecting device

A solar heat collection and heat collection module technology, applied in the fields of electric power and energy, can solve the problems of loss of power generation efficiency, control signal lag heat energy, uneven heating of the heat collection device, etc. Effect

Inactive Publication Date: 2012-04-25
深圳市联讯创新工场科技开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is: in the solar heat collecting equipment in the prior art, the heat collecting device is heated unevenly due to the frequent and violent changes of the light intensity irradiated on the heat collecting equipment and due to the simple dependence on the working medium flow The temperature value measured by the temperature sensor at the outlet is used as the basis for controlling the speed of the driving pump, and the control signal lags behind the heat energy loss, which causes the power generation efficiency to decrease

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] This embodiment provides a solar heat collection device, including:

[0058] At least one heat collection module (11) is arranged between the inlet main pipe and the outlet main pipe, each of the heat collection modules (11) includes a hollow container with an inlet and an outlet, and a plurality of the hollow containers are provided with suitable suction A pipeline for the flow of a hot working fluid, a flow controller is arranged between the hollow container and the inlet main pipe and / or the outlet main pipe;

[0059] At least one drive pump for driving the heat-absorbing working fluid to flow into the hollow container;

[0060] It also includes a control system that controls the flow controller to change the flow rate and / or flow rate of the endothermic working fluid flowing into the hollow container;

[0061] Such as image 3 As shown, at least one heat collection module 11 is assembled to form a polyhedral structure, which is arranged on the top of the solar heat collecti...

Embodiment 2

[0068] In this embodiment, the control system further includes an arithmetic unit;

[0069] The arithmetic unit combines the feedforward adjustment signal output by the feedforward adjustment unit in combination with the preset temperature value T at the outlet of the heat collection module 11 stored in the control unit 0 Or / and preset pressure value P 0 , Generating an adjustment signal for adjusting the flow controller;

[0070] The control system adjusts the corresponding flow controller according to the adjustment signal of each flow controller to change the flow rate and / or flow rate of the endothermic working medium flowing into the corresponding hollow container.

[0071] An outlet temperature sensor and / or pressure sensor is provided at the outlet of the hollow container for measuring the temperature and / or pressure value at the outlet of the hollow container, and the outlet temperature sensor and / or pressure sensor is different from the control system Inter-communication con...

Embodiment 3

[0080] In this embodiment, on the basis of embodiment 1 or embodiment 2, the flow regulator is selected as a valve and / or a flow drive pump;

[0081] When the flow regulator is a valve, the control system controls the opening of the valve to change the flow rate and / or flow rate of the endothermic working fluid flowing into the hollow container;

[0082] When the flow regulator is a flow-driven pump, the control system controls the speed of the flow-driven pump to change the flow rate and / or flow rate of the heat-absorbing working fluid flowing into the hollow container.

[0083] As a variable implementation of this embodiment, each heat collection module can be provided with an inlet valve 6 and an outlet valve 7 respectively. When the temperature and pressure of the heat absorption working medium of a certain heat collection module's outlet valve increase, the control system Control the inlet valve and outlet valve to increase the opening to accelerate the heat absorption speed, so...

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Abstract

The invention discloses a solar heat collecting device, comprising at least one heat collecting module, wherein each heat collecting module comprises a hollow container with an inlet and an outlet, a flow controller is arranged between the hollow container and an inlet main pipe and/or an outlet main pipe; each heat collecting module also comprises at least one temperature sensor and/or a light intensity sensor which is in communication connection with a control system and is used for measuring the temperature and/or illuminated light intensity value of the hollow container; and the control system comprises a feed-forward control unit which generates feed-forward regulating signals for regulating each flow controller after analyzing and calculating according to the temperature and/or light intensity value of each hollow container, thereby changing the quantity and/or rate of flow of a heat-absorbing working medium flowing into the corresponding hollow container, and enabling the heat-absorbing working medium at the outlet of each heat collecting module to reach the preset pressure value and temperature value. The solar heat collecting device disclosed by the invention ensures thatthe pressure and temperature of the heat-absorbing working medium at the outlet of each heat collecting module are uniform, control signal lag is eliminated, and the generating efficiency is improved.

Description

Technical field [0001] The invention belongs to the technical field of energy and electric power, and specifically relates to a heat collection device used in a solar power plant. Background technique [0002] As the global energy crisis becomes increasingly prominent, the development of new energy sources has become a common need for all mankind. Solar power technology is a new way to achieve large-scale development and utilization of solar energy, and one of the effective ways to solve the global energy crisis. The heat collector used to collect solar energy is a very important part in the process of solar energy utilization. It mainly uses the liquid endothermic working medium to absorb the heat of the solar energy to a certain temperature and then vaporizes, and uses the heat carried by the steam to generate electricity. After the electricity is generated, the steam turns into a liquid state and is recycled in this way. [0003] Tower solar power station is a kind of solar pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24J2/40
CPCF24J2/04F24J2/402F24J2/407Y02E10/40F24J2/40F24S50/80F24S10/00F24S50/40
Inventor 孙海翔朱亮许迪窦新国钟强王威刘泉
Owner 深圳市联讯创新工场科技开发有限公司
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