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A heat absorber of a rotating photothermal power station and a uniform heat absorption control method

A technology for photothermal power stations and heat absorbers, which is applied in solar collector controllers, solar thermal power generation, solar collectors, etc., can solve problems affecting the service life of collector tubes, thermal stress of collector tubes exceeding the limit, and collector tube flow Problems such as being too small to achieve the effect of improving the effective utilization rate of energy, prolonging the average service life, and reducing operation and maintenance costs

Active Publication Date: 2019-12-31
中广核工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing fixed heat absorber has the following problems: since the heat absorber itself is fixedly installed, when a cloud layer passes through the heat collecting field, it will cause the heat collecting tubes of the heat absorber in some directions to be in a state of not receiving radiation, while the remaining parts are concentrated The heat pipe is under normal solar radiation, and the radiation heat received by the heat collecting tubes in all directions of the heat absorber has a large deviation, which affects the service life of the heat collecting tubes; in addition, because the flow distribution of the heat collecting tubes in each direction of the heat absorber is Evenly distributed, and the average flow rate is determined by the average value of radiation measured in several typical directions. This average distribution method causes the flow rate of the heat collecting tubes that normally receive radiation to be relatively small, and the flow rate of heat collecting tubes that are not normally receiving radiation is relatively large, thus The thermal stress of the collector tube that normally receives radiation is exceeded due to the small flow rate

Method used

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  • A heat absorber of a rotating photothermal power station and a uniform heat absorption control method
  • A heat absorber of a rotating photothermal power station and a uniform heat absorption control method
  • A heat absorber of a rotating photothermal power station and a uniform heat absorption control method

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Embodiment 1

[0051] figure 1 Schematic diagram of the structure of the heat sink of the rotary solar-thermal power station provided in Embodiment 1 of the present invention;

[0052] Such as figure 1 As shown, a heat absorber of a rotating photothermal power station is used to absorb solar radiation heat energy and heat a heat collection medium. The heat absorber includes:

[0053] The cold medium header assembly 2 is connected with the cold medium pipeline 6 and is used to accommodate the cold heat collecting medium entering from the outside;

[0054] The heat medium header assembly 3 is connected to the heat medium pipeline 7, and is used to accommodate the heat heat collection medium generated after heating;

[0055] The cavity assembly 1 is arranged between the cold medium header assembly 2 and the hot medium header assembly 3 and is sealed and connected, and is used for circulating the heat collecting medium, absorbing solar radiation heat energy, and transferring heat energy to the...

Embodiment 2

[0093] Figure 4 The flow chart of uniform endothermic control provided by Embodiment 2 of the present invention.

[0094] This embodiment provides a uniform heat absorption control method, which is applied to the heat absorber of the above-mentioned rotary solar thermal power station, such as Figure 4 As shown, the uniform endothermic control method comprises steps:

[0095] S1, obtain the temperature signal of each heat collecting tube 101, and calculate the average temperature of the heat collecting tube 101 in each zone in the circumferential direction of the heat absorber according to the acquired temperature signal of each heat collecting tube 101; in this embodiment, the upper collector of the heat absorber The heat pipe 101 is equally divided into a plurality of zones according to the circumferential direction, and the average temperature of the heat collector tubes 101 in each zone is calculated by averaging the temperatures detected by each heat collector tube 101 ...

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Abstract

The invention discloses a rotary type photo-thermal power station heat absorber and a uniform heat absorption control method. The heat absorber comprises a cavity assembly, a cool medium collecting box assembly, a hot medium collecting box assembly and a driving device. The driving device is connected with the cavity assembly and used for driving the cavity assembly to make rotary movement in the circumferential direction relative to the cool medium collecting box assembly and the hot medium collecting box assembly to enable the cavity assembly to uniformly absorb solar radiation heat energy. According to the rotary type photo-thermal power station heat absorber and the uniform heat absorption control method, the cavity assembly is arranged to be of a rotatable structure, so that radiation heat received by all components of the cavity assembly is more uniform, and the thermal stress ultralimit problem of an existing heat absorber is solved accordingly.

Description

technical field [0001] The invention belongs to the field of tower solar photothermal power generation, and in particular relates to a heat absorber of a rotary photothermal power station and a uniform heat absorption control method. Background technique [0002] Solar thermal power generation refers to the use of large-scale arrays of parabolic or dish mirrors to collect solar heat, provide steam through heat exchange devices, and combine traditional turbogenerator technology to achieve the purpose of power generation. [0003] At present, the heat absorber of the traditional tower-type photothermal power station generally adopts a fixed heat absorber. The lower part of the heat absorber is a cold medium header, the middle is the cavity assembly of the heat absorber, and the upper part is a heat medium header. The circumference of the cavity assembly A number of heat collecting tubes are arranged at the bottom of the heat absorber. The heat collecting medium enters the cold...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24S20/20F24S60/30F24S50/40
CPCF24S20/20F24S50/40F24S60/00Y02E10/40Y02P90/50
Inventor 江才俊佘靖策张太勇武树成侯平利
Owner 中广核工程有限公司
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