CN220829102U - Repair coating structure for inner wall of cooling tower and water spraying framework of power plant and cooling tower - Google Patents
Repair coating structure for inner wall of cooling tower and water spraying framework of power plant and cooling tower Download PDFInfo
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- CN220829102U CN220829102U CN202321781851.5U CN202321781851U CN220829102U CN 220829102 U CN220829102 U CN 220829102U CN 202321781851 U CN202321781851 U CN 202321781851U CN 220829102 U CN220829102 U CN 220829102U
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- wall
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 230000008439 repair process Effects 0.000 title claims abstract description 50
- 239000011248 coating agent Substances 0.000 title claims abstract description 43
- 238000000576 coating method Methods 0.000 title claims abstract description 43
- 238000001816 cooling Methods 0.000 title claims abstract description 31
- 238000005507 spraying Methods 0.000 title claims abstract description 13
- 238000005260 corrosion Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000004570 mortar (masonry) Substances 0.000 claims abstract description 15
- 239000004568 cement Substances 0.000 claims abstract description 14
- 238000002425 crystallisation Methods 0.000 claims abstract description 10
- 230000008025 crystallization Effects 0.000 claims abstract description 10
- 239000002178 crystalline material Substances 0.000 claims description 14
- 239000003973 paint Substances 0.000 claims description 7
- 239000004593 Epoxy Substances 0.000 claims description 6
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 abstract description 5
- 230000001681 protective effect Effects 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 47
- 239000000126 substance Substances 0.000 description 9
- 230000007797 corrosion Effects 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- 230000008595 infiltration Effects 0.000 description 5
- 238000001764 infiltration Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 230000001680 brushing effect Effects 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 108010025899 gelatin film Proteins 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000011368 organic material Substances 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 150000004760 silicates Chemical class 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 229910000951 Aluminide Inorganic materials 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 229920006334 epoxy coating Polymers 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011253 protective coating Substances 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000010257 thawing Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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- Building Environments (AREA)
Abstract
The utility model relates to a repair coating structure for an inner wall and a water spraying framework of a cooling tower of a power plant, which comprises the following components: the basalt flake water-based anti-corrosion coating film, the middle layer and the inorganic water-based permeable crystallization material layer are sequentially arranged from inside to outside; wherein the intermediate layer comprises a mortar repair layer and a cement-based grouting material repair layer. The repairing coating structure is not easy to be influenced by water vapor in a concrete matrix, is not easy to peel off, has excellent anti-corrosion performance, can have a protective effect within 10 years after being repaired, can be enhanced along with the extension of time within 3-5 years after being repaired, and ensures the safe running environment inside the cooling tower.
Description
Technical Field
The utility model relates to the technical field of corrosion prevention of inner walls of cooling towers and water spraying frameworks of power plants, in particular to a repair coating structure for the inner walls of the cooling towers and the water spraying frameworks of the power plants.
Background
The inner water spraying framework and the inner wall concrete of the cooling tower of the power plant are easy to damage in the use process to form a damaged structure, and the repairing coating structure of the inner wall of the cooling tower of the power plant is mainly divided into an organic repairing coating and an inorganic repairing coating at present.
Wherein the organic repairing coating comprises the steps of coating an epoxy resin sealing paint on the bottom layer after filling up the broken part and recovering the original outline of the structure by using mineral-based mortar with the thickness of 5mm, coating a modified epoxy glass flake (a coating consisting of epoxy resin, glass flake, pigment, curing agent, auxiliary agent, solvent and the like) with the thickness of 400 mu m on the middle layer, and coating a modified epoxy coating with the thickness of 200 mu m on the outer layer. The cooling tower has high water content of structural concrete, porous concrete and moisture flowing inside, and the surface of the concrete is dry during repair, so that the painted epoxy resin sealing paint, epoxy glass flake and other components are very sensitive to moisture, and this affects the adhesion of repair material to the concrete and the repair material is easy to peel off fast. In addition, the difference of the thermal expansion coefficients of the organic coating and the concrete is very large, and the cooling tower is of a thin shell structure, and is irradiated by sunlight, so that the surface of the cooling tower is not uniform in heating degree, the appearance is changed, the organic material is easy to fall off, the organic material is maintained for 2-3 years to fall off completely after being repaired, the peeling of the previous organic coating is required to be cleaned and polished completely during the repair again, and the repair cost is increased.
Wherein the inorganic repair coating comprises the steps of brushing a cement-based steel bar rust inhibitor on the exposed rust steel bar, and then using repair mortar to restore the original outline of the structure, brushing UGD3610 concrete alkali-resistant seal primer on the bottom layer to seal the substrate, and brushing a layer of US1101 cement-based cooling tower anti-corrosion protective coating on the whole surface layer to carry out overall anti-seepage anti-corrosion protection on the vertical column. The concrete alkali-resistant seal primer coated on the middle bottom layer of the inorganic repair coating is crystals which permeate into the structure to play a role in water resistance, but is sensitive to various external vibrations (vibration caused by temperature change, hydrologic change, machinery and the like), and the vibrations can cause the crystals to break to form a new water passage, so that the water resistance is lost.
Disclosure of utility model
First, the technical problem to be solved
In view of the above-mentioned shortcomings and disadvantages of the prior art, the present utility model provides a repair coating structure for an inner wall and a shower framework of a power plant cooling tower, which solves the disadvantages of the existing repair coating structure for an inner wall of a power plant cooling tower.
(II) technical scheme
The technical scheme of the utility model is as follows:
A repair coating structure for an inner wall and a water drenching framework of a power plant cooling tower, comprising: the basalt flake water-based anti-corrosion coating film, the middle layer and the inorganic water-based permeable crystallization material layer are sequentially arranged from inside to outside; wherein the intermediate layer comprises a mortar repair layer and a cement-based grouting material repair layer.
According to the preferred embodiment of the utility model, an epoxy anticorrosive paint finish layer is further arranged on the outer side of the inorganic water-based permeable crystalline material layer.
According to a preferred embodiment of the present utility model, the cement-based grout repair layer includes a flat portion and an anchor portion filled into the interior of a concrete hole, crack or recess.
According to the preferred embodiment of the utility model, the minimum thickness of the mortar repair layer is not less than 6mm, and the minimum repair thickness of the exposed reinforcing steel bar at the position is not less than 12mm.
The inorganic water-based permeable crystalline material is also called as a water-based inorganic permeable crystalline material or an inorganic water-based permeable crystalline waterproof material, is a mature water-based waterproof material containing active chemical substances, can rapidly and effectively react with calcium hydroxide, calcium aluminide, calcium silicate and the like in a concrete structural layer to form inert crystals which are embedded into capillary holes of concrete, and seals micro cracks, so that the compactness and compressive strength of the concrete surface layer are greatly enhanced. This reaction is split into two stages, the first stage, which produces a silica gel film in the pores and capillary pores that solidifies into a crystalline structure when the moisture in the silica gel film evaporates. In the second stage, through the chemical reaction, the crystals formed by solidification are embedded into capillary holes and micro gaps of the concrete, so that the concrete is permanently sealed, the compactness is improved, and good air permeability is provided for the concrete. In the dry state of the concrete, the crystallization substance is dormant, when the crystallization substance encounters water, the crystallization substance expands again, the crystallization substance fills the capillary holes of the concrete to block the infiltration of water, and the circulation mode can be repeatedly carried out when the crystallization substance encounters water, so that the concrete is permanently sealed.
According to the preferred embodiment of the utility model, the inorganic water-based permeable crystalline material layer is made of nano modified silicate water solution permeable crystalline material purchased in the market or independently developed and produced by the environmental protection engineering limited company of sandisk, beijing.
The basalt flake water-based anti-corrosion coating film is formed by spraying basalt flake anti-corrosion coating, and the basalt flake anti-corrosion coating has two outstanding anti-corrosion advantages, namely the thickness of the basalt flake is generally about 2-5 mu m, and the basalt flake water-based anti-corrosion coating film can form a tile-shaped structure which is overlapped layer by layer in a coating system due to the very thin thickness of the basalt flake water-based anti-corrosion coating film, so that a maze effect is formed, and the penetration of corrosive mediums such as water, air and the like is delayed, so that the effect of protecting a substrate is achieved; secondly, basalt flakes mainly consist of dozens of metal oxides, such as silicon oxide, aluminum oxide, ferric oxide and the like, and the unique chemical components of the basalt flakes enable the basalt flakes to be more resistant to chloride ion corrosion compared with other fillers, so that the basalt flakes are suitable for improving erosion resistance of the inner wall of a cooling tower and a water spraying framework of a power plant; thirdly, a basalt scaly substrate is formed, and stronger adhesive force is generated on the mortar repair layer and the cement-based grouting material repair layer, so that the middle layer is not easy to fall off. The neutral salt spray resistance of the water-based paint added with basalt flakes is improved by more than 3 times compared with that of the water-based paint without basalt flakes, and the salt spray resistance time can reach 1500 hours.
In addition, (III) beneficial effects
The repairing coating structure provided by the utility model consists of an intermediate layer consisting of a basalt flake water-based anti-corrosion coating film, a mortar repairing layer and a cement-based grouting material repairing layer and an inorganic water-based permeable crystalline material layer, does not contain volatile toxic solvents, has no special requirements on fire prevention and the like in construction, has small difference with the thermal expansion coefficient of a concrete matrix, is not easily influenced by water vapor in the concrete matrix, and is not easily peeled off; the crystal of the inorganic water-based permeable crystalline material layer on the surface layer fills the capillary holes of the concrete to prevent the infiltration of water, the mode can repeatedly occur only when meeting water, the concrete can be permanently sealed, the falling off caused by the secondary corrosion and damage of various salt substances on the basal plane can be avoided, and the influence of the humid environment where the cooling tower is positioned is completely avoided; the inorganic water-based permeable crystallization material also has excellent corrosion resistance, can have a protective effect within 10 years after being repaired, and can be enhanced along with the extension of time within 3-5 years after being repaired, so that the safe operation environment inside the cooling tower is ensured.
In the preferred embodiment of the utility model, a basalt flake water-based anti-corrosion coating film is also sprayed on the inner side of the mortar repair layer, so that the corrosion resistance, the spalling resistance and the durability of the concrete matrix of the cooling tower can be further improved.
In the preferred embodiment of the utility model, the outer side of the inorganic water-based permeable crystallization material layer is provided with the epoxy anticorrosive coating finish coat, so that the protection structure of the repair part is further perfected, the anti-seepage, freeze-thawing damage, carbonization resistance, chemical corrosion resistance and other performances of the concrete are improved and protected more comprehensively and thoroughly, the influence of the wet environment in the cooling tower on the repair material is reduced, and the cooling tower and the water spraying framework can be safely operated within 10 years under the condition that the surface structure and the performance of the concrete are not adversely affected.
Besides the protection advantage of the combination of the layers, the repair coating structure of the utility model also forms a triple anti-peeling structure, and particularly, the scale-type structure of the basalt scale water-based anti-corrosion coating film ensures that the mortar repair layer is more firmly combined and is not easy to peel off; the cement-based grouting material repairing layer is filled with grouting materials and solidified to form a T-shaped anchoring type repairing structure; the inorganic aqueous infiltration crystalline material infiltrates into the matrix material to form an root-rooted bond.
Drawings
FIG. 1 is a schematic illustration of a repair coating structure for repair of surface pits of an inner wall and a shower framework of a power plant cooling tower according to the present utility model.
Detailed Description
The utility model will be better explained by the following detailed description of the embodiments with reference to the drawings.
As shown in fig. 1, the repairing coating structure for repairing the inner wall of the cooling tower and the surface pits of the water spraying framework body 1 of the power plant is shown in a schematic view, and comprises a basalt flake water-based anti-corrosion coating film 10, an intermediate layer and an inorganic water-based permeable crystalline material layer 30 from inside to outside, wherein the intermediate layer further comprises a mortar repairing layer 21 and a cement-based grouting material repairing layer 22. The minimum thickness of the mortar repair layer 21 is not less than 6mm, and the minimum repair thickness of the exposed reinforcing steel bar at the position is not less than 12mm; the cement-based grout repair layer 22 includes a flat portion and an anchor portion that fills inward deep into a concrete hole, crack or recess, and forms a T-shaped anchored repair structure after grouting filling and curing. The inorganic aqueous infiltration crystalline material layer 30 is made of nano modified silicate aqueous solution infiltration crystalline material purchased in the market or independently developed and produced by the environmental protection engineering limited company of the book of the sciencarpium beijing. Further, an epoxy anticorrosive paint overcoat 40 is further provided on the outer side of the inorganic aqueous permeable crystalline material layer 30, and the inorganic aqueous permeable crystalline material layer 30 is surface-layer-protected.
The combination mode of the mortar repair layer 21 and the cement-based grouting material repair layer 22 in the middle layer is determined according to the surface damage condition of the cooling tower or the water spraying framework, the shallower pit is filled and flattened by the mortar repair layer 21, the cement-based grouting material repair layer 22 is mainly filled with tiny cracks and holes in a grouting mode, and a T-shaped anchoring type repair structure is formed after grouting filling and solidification.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (5)
1. A repair coating structure for power plant's cooling tower inner wall and drenching the water framework, its characterized in that includes: the basalt flake water-based anti-corrosion coating film (10), the middle layer and the inorganic water-based permeable crystallization material layer (30) are sequentially arranged from inside to outside; wherein the intermediate layer comprises a mortar repair layer (21) and a cement-based grouting material repair layer (22).
2. The repair coating structure for the inner wall and the water spraying framework of the cooling tower of the power plant according to claim 1, wherein an epoxy anticorrosive paint finish layer (40) is further arranged on the outer side of the inorganic water-based permeable crystalline material layer (30).
3. The repair coating structure for the inner wall and the water drenching framework of the cooling tower of the power plant according to claim 1, wherein the cement-based grouting material repair layer (22) comprises a flat portion and an anchor portion filled into the interior of a concrete hole, crack or recess.
4. The repair coating structure for the inner wall and the water spraying framework of the cooling tower of the power plant according to claim 1, wherein the minimum thickness of the mortar repair layer is not less than 6mm, and the minimum repair thickness of the exposed reinforcing steel bars at the position is not less than 12mm.
5. A cooling tower, characterized in that its inner wall and/or the surface of the shower framework comprises a repair coating structure according to any one of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321781851.5U CN220829102U (en) | 2023-07-07 | 2023-07-07 | Repair coating structure for inner wall of cooling tower and water spraying framework of power plant and cooling tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321781851.5U CN220829102U (en) | 2023-07-07 | 2023-07-07 | Repair coating structure for inner wall of cooling tower and water spraying framework of power plant and cooling tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220829102U true CN220829102U (en) | 2024-04-23 |
Family
ID=90726329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321781851.5U Active CN220829102U (en) | 2023-07-07 | 2023-07-07 | Repair coating structure for inner wall of cooling tower and water spraying framework of power plant and cooling tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220829102U (en) |
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2023
- 2023-07-07 CN CN202321781851.5U patent/CN220829102U/en active Active
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