CN114453223A - Method for repairing coating of fused salt heat absorber - Google Patents
Method for repairing coating of fused salt heat absorber Download PDFInfo
- Publication number
- CN114453223A CN114453223A CN202111622484.XA CN202111622484A CN114453223A CN 114453223 A CN114453223 A CN 114453223A CN 202111622484 A CN202111622484 A CN 202111622484A CN 114453223 A CN114453223 A CN 114453223A
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- Prior art keywords
- coating
- heat absorber
- temperature
- electric heater
- heater
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- 239000006096 absorbing agent Substances 0.000 title claims abstract description 79
- 239000011248 coating agent Substances 0.000 title claims abstract description 77
- 238000000576 coating method Methods 0.000 title claims abstract description 77
- 150000003839 salts Chemical class 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000004140 cleaning Methods 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 239000012535 impurity Substances 0.000 claims abstract description 15
- 230000001680 brushing effect Effects 0.000 claims abstract description 9
- 230000001678 irradiating effect Effects 0.000 claims abstract description 9
- 229920000742 Cotton Polymers 0.000 claims abstract description 6
- 239000010410 layer Substances 0.000 claims description 9
- 238000012806 monitoring device Methods 0.000 claims description 9
- 238000004321 preservation Methods 0.000 claims description 6
- 239000011247 coating layer Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 description 9
- 230000008439 repair process Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
- B05D5/005—Repairing damaged coatings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a method for repairing a coating of a molten salt heat absorber, which comprises the following steps: s1: cleaning impurities, and brushing a coating when the surface temperature of the heat absorber reaches 90-110 ℃; s2: judging weather conditions, and selecting a corresponding heating mode according to the weather conditions; s3: if the weather is clear, after the coating is brushed, the heliostat is used for irradiating on the heat absorber, and the local temperature is controlled, so that the coating is firmly attached to the heat absorbing pipe; s4: if the weather is not good, after the coating is brushed, the heater is fixed on the heat absorber, and after the specified temperature and time are reached, the heater is detached, so that the coating can be firmly attached to the heat absorber. According to the invention, the heating surface of the electric heater is required to be mild to the shape of the heat absorber, and the surface of the heating surface is laid with high-temperature-resistant heat-insulating cotton for anti-collision and sealing; the electric heater control box can adjust the temperature and the temperature rise rate at any time.
Description
Technical Field
The invention relates to the technical field related to heat absorber coating repair, in particular to a method for repairing a molten salt heat absorber coating.
Background
Molten salt has been widely used in solar thermal power generation technology as a heat transfer and storage working medium. Due to the low cost and the characteristic of integration of heat absorption and heat storage, the fused salt tower type thermal power generation technology becomes a renewable energy power generation mode which has the most commercial prospect and can realize the base load; the molten salt heat absorber needs to be preheated before being started every day, so that the temperature of the wall of the heat absorber reaches the temperature above the freezing point, and the molten salt working medium can be charged. Under operating conditions such as a cloud cover, the molten salt heat absorber needs to be insulated to prevent the temperature of the pipe wall of the molten salt heat absorber from being lower than the solidifying point temperature of the molten salt and prevent the molten salt from being solidified in the heat absorber.
In the existing operational photothermal power station, the fault of a heat absorber is frequent, and the coating on the surface of the heat absorber is easy to fall off due to the frequent thermal shock of the heat absorber in the operation process, so that once the coating falls off, the thermal efficiency of the molten salt heat absorber is seriously influenced, and the coating is repaired by no good method in the operational photothermal power station at home.
Disclosure of Invention
The invention aims to provide a method for repairing a coating of a molten salt heat absorber, which aims to solve the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a molten salt heat absorber coating repairing method comprises the following steps:
s1: cleaning impurities, and brushing a coating when the surface temperature of the heat absorber reaches 90-110 ℃;
s2: judging weather conditions, and selecting a corresponding heating mode according to the weather conditions;
s3: if the weather is clear, after the coating is brushed, the heliostat is used for irradiating on the heat absorber, and the local temperature is controlled, so that the coating is firmly attached to the heat absorbing pipe;
s4: if the weather is not good, after the coating is brushed, the heater is fixed on the heat absorber, and after the specified temperature and time are reached, the heater is detached, so that the coating can be firmly attached to the heat absorber.
Preferably, in step S1, when the surface temperature of the heat sink reaches 100 degrees celsius, the coating layer is brushed.
Preferably, in step S4, the heating surface of the electric heater needs to conform to the shape of the heat sink.
Preferably, the surface of the heater is provided with a heat-insulating layer with high temperature resistance.
Preferably, the device further comprises a temperature monitoring device; the heat absorber outside is provided with electric heater, be provided with temperature monitoring device between heat absorber and the electric heater, the electric heater outside is provided with the heat preservation, is provided with electric heater input and electric heater output on the electric heater.
Preferably, the temperature range of the electric heater is 50-1000 ℃, and brushes for cleaning impurities are additionally arranged at the upper end and the lower end of the electric heater.
Preferably, the heat-insulating layer is made of high-temperature-resistant heat-insulating cotton.
Preferably, the electric heater control box is further included and used for adjusting the temperature and the temperature rise rate.
Compared with the prior art, the invention has the beneficial effects that: under the condition of bad weather, the heater in the attached drawing is utilized, after the coating is brushed, the heater is fixed on the heat absorber, and after the specified temperature and time are reached, the heater is dismounted, so that the coating can be firmly attached to the heat absorber; the heating surface of the electric heater is required to be mild to the shape of the heat absorber, and high-temperature-resistant heat-insulating cotton is laid on the surface of the heating surface and has the functions of collision prevention and sealing; the electric heater control box can adjust the temperature and the temperature rise rate at any time.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a front view of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a flow chart of the present invention;
fig. 4 is a graph of processing time for the present invention.
In the figure: 1. a heat sink; 2. a heater; 3. an electric heater input; 4. an electric heater output; 5. a temperature monitoring device; 6. and (7) an insulating layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example one
Referring to fig. 1-4, in an embodiment of the present invention, a method for repairing a coating of a molten salt heat absorber includes the following steps:
s1: cleaning impurities, and brushing a coating when the surface temperature of the heat absorber reaches 90-110 ℃;
s2: judging weather conditions, and selecting a corresponding heating mode according to the weather conditions;
s3: if the weather is clear, after the coating is brushed, the heliostat is used for irradiating on the heat absorber, and the local temperature is controlled, so that the coating is firmly attached to the heat absorbing pipe;
s4: if the weather is not good, after the coating is brushed, the heater is fixed on the heat absorber, and after the specified temperature and time are reached, the heater is detached, so that the coating can be firmly attached to the heat absorber.
Preferably, in step S1, when the surface temperature of the heat sink reaches 100 degrees celsius, the coating layer is brushed.
Preferably, in step S4, the heating surface of the electric heater needs to conform to the shape of the heat sink.
Preferably, the surface of the heater is provided with a heat-insulating layer with high temperature resistance.
Preferably, the device further comprises a temperature monitoring device; the heat absorber outside is provided with electric heater, be provided with temperature monitoring device between heat absorber and the electric heater, the electric heater outside is provided with the heat preservation, is provided with electric heater input and electric heater output on the electric heater.
Preferably, the temperature range of the electric heater is 50-1000 ℃, the upper end and the lower end of the heater are additionally provided with a steel wire brush or a brush made of other materials for cleaning impurities, and the function of automatically cleaning the impurities is realized by up-and-down sliding. A spray head is added in the heater, the automatic coating spraying function is realized after a certain temperature is reached through a temperature detection device, the heater is connected with a control box, the temperature rise range, the temperature rise speed and the like are controlled by the control box, and the coating spraying is automatically started through the control of the control box after the certain temperature is reached; the heater is fixed in a mode that two lifting lugs are additionally arranged at the upper end of the heater, the heater is lifted by a crane or an electric hoist and the like, the heater is fixed on the heat absorber through a rope, cleaning and spraying are realized by lifting the heater up and down, the heater can be assembled in a modularized mode, and the size of the heater can be assembled according to the size of a repair coating.
Preferably, the heat-insulating layer is made of high-temperature-resistant heat-insulating cotton.
Preferably, the electric heater control box is further included and used for adjusting the temperature and the temperature rise rate.
The working principle of the invention is as follows: s1: cleaning impurities, and brushing a coating when the surface temperature of the heat absorber reaches 90-110 ℃; s2: judging weather conditions, and selecting a corresponding heating mode according to the weather conditions; s3: if the weather is clear, after the coating is brushed, the heliostat is used for irradiating on the heat absorber, and the local temperature is controlled, so that the coating is firmly attached to the heat absorbing pipe; s4: if the weather is not good, after the coating is brushed, the heater is fixed on the heat absorber, and after the specified temperature and time are reached, the heater is detached, so that the coating can be firmly attached to the heat absorber.
Example two
Referring to fig. 1-4, in an embodiment of the present invention, a method for repairing a coating of a molten salt heat absorber includes the following steps:
s1: cleaning impurities, and brushing a coating when the surface temperature of the heat absorber reaches 100 ℃;
s2: judging weather conditions, and selecting a corresponding heating mode according to the weather conditions;
s3: if the weather is clear, after the coating is brushed, the heliostat is used for irradiating on the heat absorber, and the local temperature is controlled, so that the coating is firmly attached to the heat absorbing pipe;
s4: if the weather is not good, after the coating is brushed, the heater is fixed on the heat absorber, and after the specified temperature and time are reached, the heater is detached, so that the coating can be firmly attached to the heat absorber.
Preferably, in step S4, the heating surface of the electric heater needs to conform to the shape of the heat sink.
Preferably, the surface of the heater is provided with a heat-insulating layer with high temperature resistance.
Preferably, the device further comprises a temperature monitoring device; the heat absorber outside is provided with electric heater, be provided with temperature monitoring device between heat absorber and the electric heater, the electric heater outside is provided with the heat preservation, is provided with electric heater input and electric heater output on the electric heater.
Preferably, the temperature range of the electric heater is 50-1000 ℃, the upper end and the lower end of the heater are additionally provided with a steel wire brush or a brush made of other materials for cleaning impurities, and the function of automatically cleaning the impurities is realized by up-and-down sliding. A spray head is added in the heater, the automatic coating spraying function is realized after a certain temperature is reached through a temperature detection device, the heater is connected with a control box, the temperature rise range, the temperature rise speed and the like are controlled by the control box, and the coating spraying is automatically started through the control of the control box after the certain temperature is reached; the heater is fixed in a mode that two lifting lugs are additionally arranged at the upper end of the heater, the heater is lifted by a crane or an electric hoist and the like, the heater is fixed on the heat absorber through a rope, cleaning and spraying are realized by lifting the heater up and down, the heater can be assembled in a modularized mode, and the size of the heater can be assembled according to the size of a repair coating.
Preferably, the heat-insulating layer is made of high-temperature-resistant heat-insulating cotton.
Preferably, the electric heater control box is further included and used for adjusting the temperature and the temperature rise rate.
The working principle of the invention is as follows: s1: cleaning impurities, and brushing a coating when the surface temperature of the heat absorber reaches 90-110 ℃; s2: judging weather conditions, and selecting a corresponding heating mode according to the weather conditions; s3: if the weather is clear, after the coating is brushed, the heliostat is used for irradiating on the heat absorber, and the local temperature is controlled, so that the coating is firmly attached to the heat absorbing pipe; s4: if the weather is not good, after the coating is brushed, the heater is fixed on the heat absorber, and after the specified temperature and time are reached, the heater is detached, so that the coating can be firmly attached to the heat absorber.
EXAMPLE III
Referring to fig. 3-4, in an embodiment of the present invention, a method for repairing a coating of a molten salt heat absorber includes the following steps:
s1: cleaning impurities, and brushing a coating when the surface temperature of the heat absorber reaches 90-110 ℃;
s2: judging weather conditions, and selecting a corresponding heating mode according to the weather conditions;
s3: if the weather is clear, after the coating is brushed, the heliostat is used for irradiating on the heat absorber, and the local temperature is controlled, so that the coating is firmly attached to the heat absorbing pipe;
s4: if the weather is not good, after the coating is brushed, the heater is fixed on the heat absorber, after the specified temperature and time are reached, the heater is dismounted, and the coating can be firmly attached to the heat absorber.
Preferably, in step S1, when the surface temperature of the heat sink reaches 100 degrees celsius, the coating layer is brushed.
Preferably, in step S4, the heating surface of the electric heater needs to conform to the shape of the heat sink. A spray head is added in the heater, the automatic coating spraying function is realized after a certain temperature is reached through a temperature detection device, the heater is connected with a control box, the temperature rise range, the temperature rise speed and the like are controlled by the control box, and the coating spraying is automatically started through the control of the control box after the certain temperature is reached; the heater is fixed in a mode that two lifting lugs are additionally arranged at the upper end of the heater, the heater is lifted by a crane or an electric hoist and the like, the heater is fixed on the heat absorber through a rope, cleaning and spraying are realized by lifting the heater up and down, the heater can be assembled in a modularized mode, and the size of the heater can be assembled according to the size of a repair coating.
Preferably, the surface of the heater is provided with a heat-insulating layer with high temperature resistance.
The working principle of the invention is as follows: s1: cleaning impurities, and brushing a coating when the surface temperature of the heat absorber reaches 90-110 ℃; s2: judging weather conditions, and selecting a corresponding heating mode according to the weather conditions; s3: if the weather is clear, after the coating is brushed, the heliostat is used for irradiating on the heat absorber, and the local temperature is controlled, so that the coating is firmly attached to the heat absorbing pipe; s4: if the weather is not good, after the coating is brushed, the heater is fixed on the heat absorber, and after the specified temperature and time are reached, the heater is detached, so that the coating can be firmly attached to the heat absorber.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A method for repairing a coating of a molten salt heat absorber is characterized by comprising the following steps: the method comprises the following steps:
s1: cleaning impurities, and brushing a coating when the surface temperature of the heat absorber reaches 90-110 ℃;
s2: judging weather conditions, and selecting a corresponding heating mode according to the weather conditions;
s3: if the weather is clear, after the coating is brushed, the heliostat is used for irradiating on the heat absorber, and the local temperature is controlled, so that the coating is firmly attached to the heat absorbing pipe;
s4: if the weather is not good, after the coating is brushed, the heater is fixed on the heat absorber, and after the specified temperature and time are reached, the heater is detached, so that the coating can be firmly attached to the heat absorber.
2. The molten salt heat absorber coating repairing method according to claim 1, characterized in that: in step S1, when the surface temperature of the heat absorber reaches 100 degrees celsius, the coating layer is brushed.
3. The molten salt heat absorber coating repairing method according to claim 1, characterized in that: in step S4, the heating surface of the electric heater needs to conform to the shape of the heat sink.
4. The molten salt heat absorber coating repairing method according to claim 1 or 3, wherein: the temperature range of the electric heater is 50-1000 ℃, and brushes for cleaning impurities are additionally arranged at the upper end and the lower end of the electric heater.
5. The molten salt heat absorber coating repairing method according to claim 1, characterized in that: the device also comprises a temperature monitoring device; the heat absorber outside is provided with electric heater, be provided with temperature monitoring device between heat absorber and the electric heater, the electric heater outside is provided with the heat preservation, is provided with electric heater input and electric heater output on the electric heater.
6. The molten salt heat absorber coating repairing method according to claim 5, characterized in that: the electric heater adopts a heater.
7. The molten salt heat absorber coating repairing method according to claim 5, characterized in that: the heat preservation layer is made of high-temperature-resistant heat preservation cotton.
8. The molten salt heat absorber coating repairing method according to claim 5, characterized in that: still include electric heater control box, electric heater control box is used for adjusting temperature and temperature rise rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111622484.XA CN114453223A (en) | 2021-12-28 | 2021-12-28 | Method for repairing coating of fused salt heat absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111622484.XA CN114453223A (en) | 2021-12-28 | 2021-12-28 | Method for repairing coating of fused salt heat absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114453223A true CN114453223A (en) | 2022-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111622484.XA Pending CN114453223A (en) | 2021-12-28 | 2021-12-28 | Method for repairing coating of fused salt heat absorber |
Country Status (1)
| Country | Link |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106470770A (en) * | 2014-07-04 | 2017-03-01 | 杜尔系统股份公司 | Coating method and the coating device for forming decorative coveringn |
| CN112371412A (en) * | 2020-11-03 | 2021-02-19 | 浙江中控太阳能技术有限公司 | Online maintenance device for pipe screen coating of tower type heat absorber |
-
2021
- 2021-12-28 CN CN202111622484.XA patent/CN114453223A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106470770A (en) * | 2014-07-04 | 2017-03-01 | 杜尔系统股份公司 | Coating method and the coating device for forming decorative coveringn |
| CN112371412A (en) * | 2020-11-03 | 2021-02-19 | 浙江中控太阳能技术有限公司 | Online maintenance device for pipe screen coating of tower type heat absorber |
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Application publication date: 20220510 |
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