Chemical operation equipment and surface heat preservation composite coating structure of steel pipe of chemical operation equipment

Abstract

The utility model relates to a surface heat-preservation composite coating structure of a steel pipe, which comprises a primer layer, a high-temperature-resistant ceramic particle heat-preservation layer, a ceramic particle heat-insulation heat-preservation layer and a protective layer, the primer layer is used for being arranged on the outer side surface of a steel pipe in a coating mode, the high-temperature-resistant ceramic particle heat preservation layer is arranged on the primer layer in a coating mode, the ceramic particle heat insulation layer is arranged on the high-temperature-resistant ceramic particle heat preservation layer in a coating mode, and the protective layer is arranged on the ceramic particle heat insulation layer in a coating mode. The surface heat preservation composite coating structure of the steel pipe has the functions of cracking prevention, hollowing prevention, falling prevention and the like, and is good in heat preservation effect, high in impact resistance and long in service life.

Description

Technical Field

[0001] The utility model relates to the technical field of surface protective coatings for steel pipes, in particular to a chemical operation device and a surface thermal insulation composite coating structure for a steel pipe thereof. Background Art

[0002] In chemical operation equipment, it is usually necessary to coat the surface of the rotating steel pipe with a thermal insulation composite coating, so as to provide the steel pipe with anti-corrosion, heat preservation and protection. The steel pipe coated with the thermal insulation composite coating has the properties of heat resistance, acid and alkali resistance, weather resistance, and UV resistance.

[0003] The thickness of the insulation material in the existing insulation composite coating is relatively thick, which is not conducive to the rotation of the steel pipe. At the same time, the material structure of the existing insulation composite coating is prone to cracking, hollowing, and falling off, resulting in poor insulation effect, weak impact resistance, and short service life. Utility Model Content

[0004] Based on this, it is necessary to provide a surface insulation composite coating structure for chemical operation equipment and its steel pipe.

[0005] The utility model provides a technical solution to the above-mentioned technical problems as follows: a surface thermal insulation composite coating structure of a steel pipe, comprising: a primer layer, a high-temperature resistant ceramic particle thermal insulation layer, a ceramic particle thermal insulation layer and a protective layer; the primer layer is used to coat the outer surface of the steel pipe, the high-temperature resistant ceramic particle thermal insulation layer is coated on the primer layer, the ceramic particle thermal insulation layer is coated on the high-temperature resistant ceramic particle thermal insulation layer, and the protective layer is coated on the ceramic particle thermal insulation layer.

[0006] In one embodiment, the primer layer is a latex layer.

[0007] In one embodiment, the ceramic particle content in the high temperature resistant ceramic particle thermal insulation layer is greater than the ceramic particle content in the ceramic particle thermal insulation layer.

[0008] In one embodiment, the particle size of the ceramic particles in the high temperature resistant ceramic particle insulation layer is 40 μm-60 μm.

[0009] In one embodiment, the particle size of the ceramic particles in the ceramic particle thermal insulation layer is 40 μm-60 μm.

[0010] In one embodiment, the thickness of the ceramic particle thermal insulation layer is greater than the thickness of the high temperature resistant ceramic particle thermal insulation layer.

[0011] In one embodiment, the protective layer is a high-density protective coating layer.

[0012] A chemical operation equipment comprises the surface thermal insulation composite coating structure of the steel pipe as claimed in any one of the above claims.

[0013] The beneficial effects of the utility model are as follows: the utility model provides a surface thermal insulation composite coating structure for a steel pipe, in which a primer layer, a high temperature resistant ceramic particle thermal insulation layer, a ceramic particle thermal insulation layer and a protective layer are sequentially coated on the steel pipe; the primer layer has strong viscosity, and when the steel pipe rotates, the primer layer can also be firmly attached to the surface of the steel pipe. Due to its unique structure and material composition, the ceramic particles have high strength, wear resistance, corrosion resistance and other properties, and also have good thermal insulation performance and high temperature resistance; therefore, in the high temperature resistant ceramic particle thermal insulation layer, the ceramic particles can effectively isolate heat conduction and reduce heat loss. By coating the ceramic particle thermal insulation layer on the high temperature resistant ceramic particle thermal insulation layer, the thermal insulation effect can be enhanced and heat loss can be further reduced. The protective layer has good water-proof performance, can play a waterproof protection role, can prevent water from flowing into the ceramic particle thermal insulation layer, the high temperature resistant ceramic particle thermal insulation layer and the primer layer, and avoids the above-mentioned coatings from cracking, hollowing and falling off. The surface thermal insulation composite coating structure of the steel pipe provided by the utility model has the functions of preventing cracking, hollowing and falling off, and has good thermal insulation effect, strong impact resistance and long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1 The figure is a schematic cross-sectional structure diagram of a surface thermal insulation composite coating structure of a steel pipe according to an embodiment.

[0016] In the attached drawings, 10 is a surface thermal insulation composite coating structure of a steel pipe; 100 is a steel pipe; 200 is a primer layer; 300 is a high temperature resistant ceramic particle thermal insulation layer; 400 is a ceramic particle thermal insulation layer; and 500 is a protective layer. DETAILED DESCRIPTION

[0017] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The technical solution of the present invention will be further described below in conjunction with the drawings of the embodiments of the present invention, and the present invention is not limited to the following specific implementation methods.

[0018] It should be understood that the same or similar numbers in the drawings of the embodiments correspond to the same or similar parts. In the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom" and the like indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0019] In one embodiment, Figure 1 As shown, a surface insulation composite coating structure 10 of a steel pipe includes: a primer layer 200, a high-temperature resistant ceramic particle insulation layer 300, a ceramic particle thermal insulation layer 400 and a protective layer 500; the primer layer 200 is used to be coated on the outer surface of the steel pipe 100, the high-temperature resistant ceramic particle insulation layer 300 is coated on the primer layer 200, the ceramic particle thermal insulation layer 400 is coated on the high-temperature resistant ceramic particle insulation layer 300, and the protective layer 500 is coated on the ceramic particle thermal insulation layer 400.

[0020] Specifically, the surface thermal insulation composite coating structure 10 of the steel pipe is formed by sequentially coating the primer layer 200, the high temperature resistant ceramic particle thermal insulation layer 300, the ceramic particle thermal insulation layer 400 and the protective layer 500 on the steel pipe 100. Among them, the primer layer 200 has a strong viscosity, and when the steel pipe 100 rotates, the primer layer 200 can also be firmly attached to the surface of the steel pipe 100. Due to its unique structure and material composition, ceramic particles have high strength, wear resistance, corrosion resistance and other properties, and also have good thermal insulation performance and high temperature resistance; therefore, in the high temperature resistant ceramic particle thermal insulation layer 300, the ceramic particles can effectively isolate heat conduction and reduce heat loss. By coating the ceramic particle thermal insulation layer 400 on the high temperature resistant ceramic particle thermal insulation layer 300, the effect of thermal insulation can be enhanced and heat loss can be further reduced. The protective layer 500 has good water-proof performance, can play a waterproof protection role, can prevent water from flowing into the ceramic particle insulation layer 400, the high temperature resistant ceramic particle insulation layer 300 and the primer layer 200, and avoids the above-mentioned coatings from cracking, hollowing and falling off. The surface insulation composite coating structure 10 of the steel pipe provided by the utility model has the functions of preventing cracking, hollowing and falling off, and has good insulation effect, strong impact resistance and long service life.

[0021] In this embodiment, the core of the high-temperature resistant ceramic particle insulation layer 300 is to select special ceramic particles as the main filler. At the same time, the high-temperature resistant ceramic particle insulation layer 300 also includes latex, silica gel and titanium dioxide materials. The ratio of the above materials can be selected according to actual needs to obtain the best ratio, so that the high-temperature resistant ceramic particle insulation layer 300 can achieve the best heat reflection performance and thermal insulation performance.

[0022] In one embodiment, the thickness of the high temperature resistant ceramic particle insulation layer is 800 μm, and the thickness of the ceramic particle heat insulation layer is 1200 μm. By coating the high temperature resistant ceramic particle insulation layer and the ceramic particle heat insulation layer of the above thickness on the steel pipe, a good heat insulation effect can be achieved.

[0023] In order to firmly coat the primer layer 200 on the steel pipe 100, in one embodiment, the primer layer 200 is a latex layer. Specifically, the main material of the primer layer 200 is latex. Since the latex layer contains mostly latex components, and latex can enhance the bonding force between the latex paint film and the base layer, the primer layer 200 has high viscosity and can prevent the occurrence of peeling, shedding, etc. Through the above configuration, even if the steel pipe 100 is rotating, the primer layer 200 can firmly adhere to the surface of the steel pipe 100.

[0024] In one embodiment, the ceramic particle content in the high temperature resistant ceramic particle insulation layer 300 is greater than the ceramic particle content in the ceramic particle heat insulation layer 400. Specifically, since the high temperature resistant ceramic particle insulation layer 300 is closer to the steel pipe 100, the ceramic particle content in the high temperature resistant ceramic particle insulation layer 300 is set to be greater than the ceramic particle content in the ceramic particle heat insulation layer 400, thereby making the heat insulation effect of the high temperature resistant ceramic particle insulation layer 300 better than that of the high temperature resistant ceramic particle insulation layer 300. Through the above setting, it is possible to ensure that the heat insulation effect is enhanced while reducing the production cost of the ceramic particle heat insulation layer 400.

[0025] In order to make the high temperature resistant ceramic particle insulation layer 300 have stronger adhesion, in one embodiment, the particle size of the ceramic particles in the high temperature resistant ceramic particle insulation layer 300 is 40μm-60μm. Specifically, since extremely fine particles can ensure strong adhesion of the coating film, ceramic particles with a particle size range of 40μm-60μm are selected as the main material to be filled in the high temperature resistant ceramic particle insulation layer 300, which can make the high temperature resistant ceramic particle insulation layer 300 have stronger adhesion, so that it can be more firmly coated on the primer layer 200.

[0026] In order to make the ceramic particle insulation layer 400 have stronger adhesion, in one embodiment, the particle size of the ceramic particles in the ceramic particle insulation layer 400 is 40μm-60μm. Specifically, since extremely fine particles can ensure strong adhesion of the coating, ceramic particles with a particle size range of 40μm-60μm are selected as the main material to be filled in the ceramic particle insulation layer 400, which can make the high temperature resistant ceramic particle insulation layer 300 have stronger adhesion, so that it can be more firmly coated on the high temperature resistant ceramic particle insulation layer 300.

[0027] In one embodiment, Figure 1 As shown, the thickness of the ceramic particle heat insulation layer 400 is greater than the thickness of the high temperature resistant ceramic particle heat insulation layer 300. Specifically, by making the coating thickness of the ceramic particle heat insulation layer 400 greater than the coating thickness of the high temperature resistant ceramic particle heat insulation layer 300, a better heat insulation effect can be achieved, while also protecting the high temperature resistant ceramic particle heat insulation layer 300.

[0028] In one embodiment, the protective layer 500 is a high-density protective coating layer. Specifically, the high-density protective coating layer is formed by solidifying the high-density protective coating; and the high-density protective coating is an elastic coating, which is formed by reacting a variety of modified resins, special transparent methyl vinyl high-viscosity silicone resins, coupling agents, surfactants and a variety of pigments and fillers, and adding a curing agent. In the polymer protective coating, the reaction product is rich in a variety of functional groups and chemical bonds, so that the formed high-density protective coating layer is flexible and rigid, and the high-density protective coating layer has the characteristics of being dense, continuous, and seamless, and the high-density protective coating layer can completely isolate the infiltration of moisture and oxygen in the air, and has excellent anti-corrosion and protective properties. The high-density protective coating layer also has multiple functions such as wear resistance, waterproofing, impact resistance, fatigue resistance, aging resistance, high temperature resistance, and nuclear radiation resistance.

[0029] In this embodiment, the high-density protective coating layer is an elastic anti-corrosion protective coating with an interpenetrating network structure.

[0030] A chemical operation equipment, comprising the surface thermal insulation composite coating structure 10 of the steel pipe as claimed in any one of the above claims. By coating the surface thermal insulation composite coating structure 10 of the steel pipe on the steel pipe in the chemical operation equipment, the steel pipe can be provided with functions of corrosion prevention, heat preservation and protection. At the same time, the surface thermal insulation composite coating structure 10 of the steel pipe has the functions of preventing cracking, hollowing and falling off, and can provide better protection when the steel pipe rotates. The surface thermal insulation composite coating structure 10 of the steel pipe has the advantages of good thermal insulation effect, strong impact resistance and long service life.

[0031] In one embodiment, when the chemical operation equipment is located at an ambient temperature of 23.5°C and an ambient wind speed of 5 m / s, and the chemical operation equipment is in operation, the surface temperature of the steel pipe coated with the surface thermal insulation composite coating structure 10 of the steel pipe in the chemical operation equipment will not exceed 50°C (±5°C), so the surface thermal insulation composite coating structure 10 of the steel pipe can provide a good thermal insulation effect for the steel pipe.

[0032] Compared with the prior art, the utility model has at least the following advantages: the surface thermal insulation composite coating structure 10 of the steel pipe is used to coat the surface of the steel pipe rotating in the chemical operation equipment. Specifically, by coating the primer layer 200, the high temperature resistant ceramic particle thermal insulation layer 300, the ceramic particle thermal insulation layer 400 and the protective layer 500 on the steel pipe in sequence, the steel pipe can be provided with the functions of anti-corrosion, heat preservation and protection. At the same time, the surface thermal insulation composite coating structure 10 of the steel pipe has the functions of anti-cracking, anti-hollowing and anti-falling, and has good thermal insulation effect, strong impact resistance and long service life.

[0033] Obviously, the above embodiments of the utility model are only examples for clearly explaining the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made on the basis of the above description. It is not necessary and impossible to list all the implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A surface thermal insulation composite coating structure of a steel pipe, characterized in that: include: Primer layer, high temperature resistant ceramic particle insulation layer, ceramic particle heat insulation layer and protective layer; The primer layer is used to coat the outer surface of the steel pipe, the high-temperature resistant ceramic particle insulation layer is coated on the primer layer, the ceramic particle insulation layer is coated on the high-temperature resistant ceramic particle insulation layer, and the protective layer is coated on the ceramic particle insulation layer.

2. The surface thermal insulation composite coating structure of the steel pipe according to claim 1 is characterized in that: The primer layer is a latex layer.

3. The surface thermal insulation composite coating structure of the steel pipe according to claim 1 is characterized in that: The ceramic particle content in the high temperature resistant ceramic particle thermal insulation layer is greater than the ceramic particle content in the ceramic particle thermal insulation layer.

4. The surface thermal insulation composite coating structure of the steel pipe according to claim 1, characterized in that: The particle size of the ceramic particles in the high temperature resistant ceramic particle insulation layer is 40 μm-60 μm.

5. The surface thermal insulation composite coating structure of the steel pipe according to claim 1 is characterized in that: The particle size of the ceramic particles in the ceramic particle thermal insulation layer is 40 μm-60 μm.

6. The surface thermal insulation composite coating structure of the steel pipe according to claim 1, characterized in that: The thickness of the ceramic particle heat insulation layer is greater than the thickness of the high temperature resistant ceramic particle heat insulation layer.

7. The surface thermal insulation composite coating structure of the steel pipe according to claim 1, characterized in that: The protective layer is a high-density protective coating layer.

8. A chemical operation equipment, characterized in that: The invention comprises the surface thermal insulation composite coating structure of the steel pipe as described in any one of claims 1 to 7.

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