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Molten salt heat absorber coating repairing method

A repair method and technology for a salt heat absorber, which can be applied to coatings, devices for coating liquids on surfaces, pre-treatment surfaces, etc. Problems such as thermal efficiency of molten salt heat sink

Pending Publication Date: 2022-05-10
QINGHAI SUPCON SOLAR POWER GENERATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the currently operating solar thermal power plants, the heat absorber failure is relatively frequent. Because the heat absorber is frequently subjected to thermal shock during operation, the coating on the surface of the heat absorber is easy to fall off. Once the coating falls off, it will seriously affect the heat absorption of the molten salt. The thermal efficiency of the device, there is no good method to repair the coating in the existing domestic solar thermal power plants

Method used

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  • Molten salt heat absorber coating repairing method
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  • Molten salt heat absorber coating repairing method

Examples

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Effect test

Embodiment 1

[0026] see Figure 1-4 , in an embodiment of the present invention, a molten salt heat absorber coating repair method, comprising the following steps:

[0027] S1: Clean up impurities, and brush the coating when the surface temperature of the heat absorber reaches 90-110 degrees Celsius;

[0028] S2: Judge the weather conditions, and select the corresponding heating method according to the weather conditions;

[0029] S3: If the weather is fine, after applying the coating, use the field heliostat to irradiate the heat absorber, control the local temperature, and make the coating firmly adhere to the heat absorbing pipe;

[0030] S4: If the weather is bad, after applying the coating, fix the heater on the heat sink, and after reaching the specified temperature and time, remove the heater, and the coating will be firmly attached to the heat sink .

[0031] Preferably, in the step S1, the coating is applied when the surface temperature of the heat absorber reaches 100 degrees ...

Embodiment 2

[0040] see Figure 1-4 , in an embodiment of the present invention, a molten salt heat absorber coating repair method, comprising the following steps:

[0041] S1: Clean up impurities, and brush the coating when the surface temperature of the heat sink reaches 100 degrees Celsius;

[0042] S2: Judge the weather conditions, and select the corresponding heating method according to the weather conditions;

[0043] S3: If the weather is fine, after applying the coating, use the field heliostat to irradiate the heat absorber, control the local temperature, and make the coating firmly adhere to the heat absorbing pipe;

[0044] S4: If the weather is bad, after applying the coating, fix the heater on the heat sink, and after reaching the specified temperature and time, remove the heater, and the coating will be firmly attached to the heat sink .

[0045] Preferably, in the step S4, the heating surface of the electric heater needs to match the shape of the heat sink.

[0046] Pref...

Embodiment 3

[0053] see Figure 3-4 , in an embodiment of the present invention, a molten salt heat absorber coating repair method, comprising the following steps:

[0054] S1: Clean up impurities, and brush the coating when the surface temperature of the heat absorber reaches 90-110 degrees Celsius;

[0055] S2: Judge the weather conditions, and select the corresponding heating method according to the weather conditions;

[0056] S3: If the weather is fine, after applying the coating, use the field heliostat to irradiate the heat absorber, control the local temperature, and make the coating firmly adhere to the heat absorbing pipe;

[0057] S4: If the weather is bad, after applying the coating, fix the heater on the heat sink, and after reaching the specified temperature and time, remove the heater, and the coating will be firmly attached to the heat sink .

[0058] Preferably, in the step S1, the coating is applied when the surface temperature of the heat absorber reaches 100 degrees ...

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Abstract

The invention discloses a molten salt heat absorber coating repairing method which comprises the following steps that S1, impurities are cleaned, and when the surface temperature of a heat absorber reaches 90-110 DEG C, a coating is brushed; s2, weather conditions are judged, and a corresponding heating mode is selected according to the weather conditions; s3, if the weather is clear, after the coating is brushed, the heat absorber is irradiated by a heliostat field heliostat, and the local temperature is controlled, so that the coating is firmly attached to the heat absorption pipe; and S4, if the weather is bad, after the coating is brushed, the heater is fixed to the heat absorber, after the specified temperature and time are reached, the heater is detached, and the coating can be firmly attached to the heat absorber. According to the invention, the heating surface of the electric heater needs to be gentle to the shape of the heat absorber, and the high-temperature-resistant thermal insulation cotton is laid on the surface of the heating surface and has anti-collision and sealing effects; the electric heater control box can adjust the temperature and the temperature rise rate at any time.

Description

technical field [0001] The invention relates to the related technical field of heat absorber coating repair, in particular to a method for repairing a molten salt heat absorber coating. Background technique [0002] Molten salt has been widely used in solar thermal power generation technology as a heat transfer and heat storage medium. It is precisely because of its low cost and the integrated characteristics of heat absorption and heat storage that the molten salt tower thermal power generation technology has become a renewable energy power generation method with the most commercial prospects and can realize base load; molten salt heat absorption The device must be preheated before starting every day, so that the temperature of the tube wall of the heat absorber reaches above the freezing point temperature, and then the molten salt working medium can be filled. Under the operating conditions such as cloud cover, it is necessary to insulate the molten salt heat absorber to ...

Claims

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Application Information

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IPC IPC(8): B05D5/00B05D3/02
CPCB05D5/005B05D3/0254
Inventor 樊玉华吴向阳谢寿安刘文闯靳英张军超
Owner QINGHAI SUPCON SOLAR POWER GENERATION
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