Thermal insulation workpiece capable of preventing paint from being scalded
By curing the anti-scalding paint layer on the outer surface of the container, the existing insulation materials are easily corroded and the fixtures fall off in harsh environments, achieving higher safety of use and simplicity of construction.
Patent Information
- Application Number
- CN202422326219.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-23
AI Technical Summary
Existing insulation materials are prone to water absorption and corrosion in harsh environments, and may easily cause the fixture to fall in extreme weather such as typhoons, posing safety hazards; at the same time, it is inconvenient to the insulation construction of special-shaped structures, which can easily lead to structural collapse.
The anti-scalding paint layer is used as the insulation structure, and it is bonded to the outer surface of the container by curing the anti-scalding paint coating to reduce or eliminate splicing gaps and improve molding flexibility.
It improves the safety and protection of use, reduces the risk of fixtures falling, simplifies the construction process, and is suitable for various special-shaped structures.
Smart Images
Figure CN223049705U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat preservation structures, and particularly relates to a heat-insulating paint heat preservation workpiece. Background Art
[0002] A large number of equipment in the marine petrochemical industry need to be heat-insulated, such as oil and gas pipelines, offshore platforms, crude oil storage tanks, petrochemical refining high-temperature pipelines, etc. The temperature of deep-sea oil and gas is high, and it has to withstand harsh environments such as low temperature at the seabed, static pressure, and scouring. In the case of long-distance transportation, if the heat preservation is improper, wax in the oil will precipitate, resulting in pipeline blockage.
[0003] The existing traditional heat preservation materials are mainly heat preservation cotton, and there are the following problems: For example, the existing heat preservation materials are overlapped in a splicing manner. If the window seam area is greater than 10%, it is easy to absorb water, which is likely to cause corrosion under the heat preservation layer, forming a potential safety hazard; in the event of a typhoon, the iron sheet on the outer layer of the heat preservation cotton is likely to be scraped off, bringing the risk of personal injury; for special-shaped structures such as pipe supports, valves, and heat exchangers, it is not easy to construct the heat preservation cotton, and the structure is likely to collapse after long-term use. Summary of the Utility Model
[0004] In order to overcome the deficiencies of the prior art, the purpose of the utility model is to provide a heat-insulating paint heat preservation workpiece that is conducive to improving the use safety, protection, and construction simplicity.
[0005] To solve the above problems, the technical solutions adopted by the utility model are as follows:
[0006] A heat-insulating paint heat preservation workpiece, comprising:
[0007] A container having a receiving cavity; and
[0008] A heat-insulating paint layer fixed on the outer surface of the container, the heat-insulating paint layer being disposed around the receiving cavity.
[0009] In some possible embodiments, the outer surface of the container has a roughened area, and the heat-insulating paint layer covers the roughened area.
[0010] In some possible embodiments, the roughness of the roughened area is 50 - 75 μm.
[0011] In some possible embodiments, the dry film thickness of at least 90% of the area of the heat-insulating paint layer meets the specified film thickness, and the dry film thickness of the area of the heat-insulating paint layer less than the specified film thickness is greater than or equal to 90% of the specified film thickness.
[0012] In some possible embodiments, the heat-insulating paint layer includes:
[0013] A coating paint layer covering the roughened area;
[0014] Apply and compact a paint layer to cover the surface of the applied paint layer facing away from the container; and
[0015] Spray a paint layer to cover the surface of the applied and compacted paint layer facing away from the applied paint layer.
[0016] In some possible embodiments, the wet film thickness of the applied paint layer is 2.25 - 2.75 mm, and the wet film thickness of the applied and compacted paint layer is 2.25 - 2.75 mm.
[0017] In some possible embodiments, the wet film thickness of the sprayed paint layer is less than the wet film thickness of each of the applied paint layer and the applied and compacted paint layer.
[0018] In some possible embodiments, the sprayed paint layer has a plurality of pattern areas arranged in rows, and partial overlaps of adjacent two pattern areas form overlapping areas. The overlapping width of each overlapping area is the same, and the overlapping width of the overlapping area is one-sixth to one-fifth of the amplitude of the pattern area.
[0019] In some possible embodiments, it further includes:
[0020] A protective topcoat layer, covering the surface of the heat-insulating paint layer facing away from the container.
[0021] In some possible embodiments, the outer surface of the heat-insulating paint layer is a semi-smooth surface.
[0022] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0023] In this application, a heat-insulating paint layer is selected as the heat-insulating structure for the heat-insulating paint heat-insulating workpiece. Thus, the heat-insulating paint layer can be adhered to the outer surface of the container through the curing of the heat-insulating paint coating, so that the heat-insulating paint heat-insulating workpiece of this application does not need to be equipped with additional heat-insulating layer fixing parts, thereby reducing the risk of the fixing parts falling off and improving the use safety. In addition, the heat-insulating paint layer is formed by the curing of the heat-insulating paint coating, which is beneficial to reducing or eliminating splicing gaps and improving the forming flexibility, thereby being beneficial to improving the protection of the container and the construction simplicity.
[0024] The present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. Description of the Drawings
[0025] Figure 1 It is a cross-sectional view of a heat-insulating paint heat-insulating workpiece provided by an embodiment of this application;
[0026] Figure 2 It is a schematic structural diagram of the overlap of pattern areas.
[0027] Explanation of the reference numerals in the drawings:
[0028] 100 - Heat-insulating workpiece with heat-resistant paint; 10 - Container; 101 - Accommodation cavity; 20 - Heat-resistant paint layer; 21 - Applied paint layer; 22 - Applied and compacted paint layer; 23 - Sprayed paint layer; 231 - Pattern area; 2311 - Overlap area; 30 - Protective topcoat layer. Specific implementation mode
[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.
[0030] The terms "first", "second", etc. in the specification, claims and drawings of the present application are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there can also be an intermediate element. When an element is referred to as being "disposed on" another element, it can be disposed on the other element or there can also be an intermediate element.
[0031] Refer to Figure 1, an embodiment of the present application provides a heat-insulating workpiece 100 with anti-scald paint. The heat-insulating workpiece 100 with anti-scald paint includes a container 10 and an anti-scald paint layer 20. The container 10 has a receiving cavity 101. Exemplarily, the container 10 can include a pipeline or a storage tank. Specifically, the container 10 can be an oil and gas pipeline, a crude oil storage tank, or a petrochemical refining pipeline. The receiving cavity 101 can be used to hold a liquid, a gas, or a solid. The anti-scald paint layer 20 is fixed on the outer surface of the container 10 and is arranged around the receiving cavity 101, so as to play a heat-insulating role for the receiving cavity 101. The anti-scald paint layer 20 is formed by curing an anti-scald paint. Exemplarily, the anti-scald paint can be a product of Mascoat brand with model DTI or 68600, a product of International brand with model 7050, a product of Carboline brand with models 731 and 3300, a product of PPG brand with model HI-TEMP 707HB, or a product of Award brand with model MC-HSC-1. It can be understood that other brand products can also be selected for the anti-scald paint layer. Exemplarily, the anti-scald paint product adopts nano-aerogel thermal insulation technology and fiber reinforcement process, and has excellent thermal insulation performance and bonding strength. Therefore, compared with the heat-insulating operation of traditional heat-insulating cotton, the anti-scald paint layer 20 does not require additional fixing parts such as iron sheets, so there is no risk of fixing parts falling off, which is beneficial to improving the use safety. In addition, the anti-scald paint layer 20 can be applied to a predetermined position according to requirements, which can reduce or eliminate splicing gaps and improve the forming flexibility, thereby being beneficial to improving the protection of the container 10 and the construction simplicity.
[0032] In the present application, the heat-insulating workpiece 100 with anti-scald paint selects the anti-scald paint layer 20 as the heat-insulating structure, so that the anti-scald paint layer 20 can be bonded to the outer surface of the container 10 by curing the anti-scald paint, making the heat-insulating workpiece with anti-scald paint of the present application not require additional heat-insulating layer fixing parts, thus reducing the risk of fixing parts falling off and improving the use safety. In addition, by curing the anti-scald paint to form the anti-scald paint layer 20, it is beneficial to reduce or eliminate splicing gaps and improve the forming flexibility, thereby being beneficial to improving the protection of the container 10 and the construction simplicity.
[0033] In some embodiments, the outer surface of the container 10 has a roughened area, and the anti-scald paint layer 20 covers the roughened area. Exemplarily, the outer surface of the container 10 can be made to have a roughened area by sandblasting or shot peening. Specifically, the abrasive diameter is 0.8 - 1 mm, and steel shot plus steel wire segments or steel shot plus steel sand is used as the abrasive. The mass ratio of steel shot: steel wire segments or steel shot: steel sand is (1:1) - (2:1). Forming a roughened area is beneficial to improving the bonding strength of the anti-scald paint layer 20.
[0034] In some embodiments, the roughness of the roughened area is 50 - 75 μm, which is beneficial to further improving the bonding strength.
[0035] In some embodiments, the dry film thickness of at least 90% of the anti-scald paint layer 20 meets the specified film thickness, and the dry film thickness of the area of the anti-scald paint layer 20 that is less than the specified film thickness is greater than or equal to 90% of the specified film thickness, which is conducive to ensuring the apparent flatness of the anti-scald paint layer 20 and conducive to ensuring the heat preservation and protection of the anti-scald paint layer 20.
[0036] In some embodiments, the anti-scald paint layer 20 includes a smeared paint layer 21, a smeared and compacted paint layer 22, and a sprayed paint layer 23. The smeared paint layer 21 covers the roughened area, the smeared and compacted paint layer 22 covers the surface of the smeared paint layer 21 facing away from the container 10, and the sprayed paint layer 23 covers the surface of the smeared and compacted paint layer 22 facing away from the smeared paint layer 21. The structure of the anti-scald paint layer 20 ensures the uniform curing of the final coating and avoids the risk of coating cracking.
[0037] It can be understood that the smeared paint layer 21 refers to a paint layer formed by construction in a smearing manner, and a prepared coating is evenly smeared using a putty knife, a plastering knife, and a scraper. The smeared and compacted paint layer 22 refers to a layer obtained by compacting the formed layer by roller coating after smearing and forming, and the sprayed paint layer 23 refers to a paint layer formed by spraying with a spray gun.
[0038] In some embodiments, the wet film thickness of the smeared paint layer 21 is 2.25 - 2.75 mm, and the wet film thickness of the smeared and compacted paint layer 22 is 2.25 - 2.75 mm. Preferably, the wet film thicknesses of both the smeared paint layer 21 and the smeared and compacted paint layer 22 are 2.5 mm. The selection of the above wet film thickness is conducive to further reducing the risk of cracking.
[0039] In some embodiments, the wet film thickness of the sprayed paint layer 23 is less than the wet film thicknesses of both the smeared paint layer 21 and the smeared and compacted paint layer 22, which is conducive to further reducing the risk of cracking. Preferably, the wet film thickness of the sprayed paint layer 23 is 2 mm.
[0040] In some embodiments, referring to Figure 2 , the sprayed paint layer 23 has a plurality of pattern areas 231 arranged in rows. Specifically, during operation, the spray gun moves uniformly in a single direction for spraying to form a pattern area 231. Partial overlaps of adjacent two pattern areas 231 form a lap area 2311, and the lap width H2 of each lap area 2311 is the same. The lap width H2 of the lap area 2311 is one-sixth to one-fifth of the amplitude H1 of the pattern area 231, which is conducive to ensuring the film thickness uniformity and reducing coating defects.
[0041] In some embodiments, referring to Figure 1, the heat-insulating workpiece 100 with heat-insulating paint further includes a protective topcoat layer 30, and the protective topcoat layer 30 covers the surface of the heat-insulating paint layer 20 facing away from the container 10. In this embodiment, the protective topcoat layer 30 covers the sprayed paint layer 23. Exemplarily, the protective topcoat layer can be formed by curing varnish, and the protective topcoat layer can improve the protection of the heat-insulating paint layer.
[0042] In some embodiments, the outer surface of the heat-insulating paint layer 20 is a semi-smooth surface, which is beneficial to improving the adhesion strength of the protective topcoat layer 30.
[0043] During specific construction and forming, it includes: roughening the container 10, forming the heat-insulating paint layer 20, and inspecting the completion of the coating.
[0044] The forming of the heat-insulating paint layer 20 includes: (1) Before the heat-insulating paint layer 20 is formed, it is necessary to do a good job in detecting the painting environment and modulating the paint. Exemplarily, for the workshop painting construction environment: the temperature is 26 - 27 °C, the relative humidity is 50% - 60%, and the temperature of the object to be painted is more than 3 °C higher than the dew point temperature. Use a hand-held hygrothermograph to detect the air temperature and humidity and calculate the relative air humidity, use a hand-held infrared thermometer to detect the substrate temperature, and record the data after the detection. Generally, it is required that the ambient temperature is not lower than 10 °C, the relative humidity does not exceed 85%, and the substrate temperature should be at least 3 °C higher than the dew point temperature but not higher than 60 °C. When the ambient temperature is lower than 10 °C and the relative humidity exceeds 85%, the surface to be coated may be dew-covered, which not only causes an extension of the paint curing time but also brings the risk of sagging. Therefore, construction is not allowed in rainy days, environments with a relative humidity greater than 85%, environments with a temperature lower than 10 °C, etc. When the substrate temperature is lower than the dew point, in a low-temperature environment, there will be condensation and frost on the surface, which will have an adverse impact on the coating. The substrate temperature should be at least 3 °C higher than the air dew point temperature. If the substrate temperature is too high, cracks, wrinkles, and other defects will occur due to the rapid drying of moisture in a short time. Construction can be carried out with the substrate surface at a temperature below 60 °C.
[0045] (2) Paint modulation: After the paint is opened, use a stirrer to stir the paint for 5 minutes continuously and slowly to make the paint components in the bucket in a uniformly dispersed state without obvious lumps and agglomerates. Determine whether to add a curing agent according to the single-component or two-component type of the paint. After stirring evenly for trowel application, it can be used directly without adding water or diluent. For airless spraying construction, determine the dilution dose according to the paint instructions, nozzle aperture, viscosity, etc. Generally, the dilution dose is between 15% and 20%.
[0046] (3) Start the construction of the heat-insulating paint by using multiple methods such as trowel application, roller coating, and spraying.
[0047] (4) During the construction process, a wet film thickness gauge is used to measure the wet film thickness to ensure uniform coating thickness. Generally, it is required to evenly distribute measurement points on every 10 ㎡ of the coated surface for wet film measurement to ensure the continuity of the film thickness uniformity of the coating. At the same time, during the construction process, inspections of the wet film coating should be carried out to avoid missed coating and miscoating. For the finished products at the construction site that may be contaminated, they should be covered and protected with colored stripe cloth or plastic film. Due to cross-operation or the erection, disassembly of scaffolds and other inevitable influencing factors, the already completed coating may be damaged or destroyed, and it must be repaired.
[0048] The inspection after the coating is completed includes: (1) Drying and curing inspection. Standard method: According to the blade method for determining the actual drying time in 7.3.3 of the Determination Method for Drying Time of Paint Films and Putty Films in GB / T 1728-2020, apply the anti-scald paint on the surface of the test panel while applying the anti-scald paint for the pipeline (ensure that the coating thickness and coating time are the same, and only a coating area of 0.5 m 2 ) is required. After drying, cut the anti-scald paint film on the surface of the test panel with a blade and observe whether there is any adhesion phenomenon between the bottom layer and the film and it does not stick to the hand, then it is determined that the paint film has reached through drying. (2) Visual inspection is carried out by visual observation. The paint film is semi-smooth with patterns on the surface, and the color is uniform. There are no defects such as pinholes, bubbles, sagging, cracking, and rusting. (3) Dry film thickness inspection is carried out by using a film thickness gauge to detect the completely cured coating. (4) Heat insulation temperature detection. After the paint is completely cured, the hot medium of the pipeline is officially put into operation, and the actual temperature is measured through a contact surface thermometer. A total of 9 points of the actual temperature are measured (specifically, it can be adjusted according to the actual situation). If the surface temperature is not higher than the specified heat insulation temperature, it is qualified. If the temperature does not meet the standard, the thickness needs to be increased continuously. After the heat insulation effect meets the requirements, the construction of the supporting protective topcoat is carried out.
[0049] The above embodiments are only the preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantive changes and substitutions made by those skilled in the art based on the present invention fall within the scope of protection required by the present invention.
Claims
1. A heat-insulating workpiece with anti-scalding paint, characterized in that: include: A container having a containing cavity, wherein the outer surface of the container has a roughened area; as well as The anti-scalding paint layer is fixed on the outer surface of the container, the anti-scalding paint layer is arranged around the accommodating cavity, and the anti-scalding paint layer covers the roughened area.
2. The anti-scalding paint heat-insulating workpiece according to claim 1, characterized in that: The roughness of the roughened area is 50-75 μm.
3. The anti-scalding paint heat-insulating workpiece according to claim 1, characterized in that: The dry film thickness of the anti-scalding paint layer in at least 90% of the area meets the specified film thickness, and the dry film thickness of the anti-scalding paint layer in the area where the dry film thickness is less than the specified film thickness is greater than or equal to 90% of the specified film thickness.
4. The anti-scalding paint heat-insulating workpiece according to claim 3, characterized in that: The anti-scalding paint layer comprises: Applying a paint layer to cover the roughened area; Applying a compacted paint layer to cover the surface of the applied paint layer facing away from the container; and A spray paint layer covers the surface of the applied compacted paint layer that is away from the applied paint layer.
5. The anti-scalding paint heat-insulating workpiece according to claim 4, characterized in that: The wet film thickness of the applied paint layer is 2.25-2.75 mm, and the wet film thickness of the applied compacted paint layer is 2.25-2.75 mm.
6. The anti-scalding paint heat-insulating workpiece according to claim 5, characterized in that: The wet film thickness of the sprayed paint layer is smaller than the wet film thickness of each of the applied paint layer and the applied compacted paint layer.
7. The anti-scalding paint heat-insulating workpiece according to claim 4, characterized in that: The spray paint layer has a plurality of pattern areas arranged in a row, and two adjacent pattern areas partially overlap to form an overlapping area. The overlapping widths of the overlapping areas are the same, and the overlapping widths of the overlapping areas are one-sixth to one-fifth of the amplitude of the pattern areas.
8. The anti-scalding paint heat-insulating workpiece according to any one of claims 1 to 7, characterized in that: Also includes: The protective topcoat layer covers the surface of the anti-scalding paint layer facing away from the container.
9. The anti-scalding paint heat-insulating workpiece according to claim 8, characterized in that: The outer surface of the anti-scalding paint layer is a semi-smooth surface.