Spraying device and method for a high-viscosity solvent-free internal drag-reducing coating
A high-viscosity, solvent-free technology, used in the application of coatings and chemical materials, can solve the problems of not revealing the specific control measures for solvent-free coating delivery, and achieve the effect of small spray width variation and high thickness uniformity
Active Publication Date: 2021-02-19
SINOPEC OILFIELD EQUIP CORP
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] Patent application number CN201420731436, the patent title is "a new type of solvent-free paint spraying equipment" discloses the structure of a solvent-free paint spraying equipment, but the specific control measures for solvent-free paint delivery are not disclosed in the technical proposal, and the scope of application of the equipment and related technical implications
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0038] The normal temperature viscosity of the two-component solvent-free internal drag-reducing coating is 20Pa·s; at 0°C, the viscosity of the coating is 80Pa·s. When the ambient temperature is 0°C, the oven is set at 90°C. After heating the component A coating for 4 hours, the temperature of component A reaches 70-80°C. ℃ and stir the paint in the material tank; after the B-component paint is heated in the oven for 1 hour, the temperature reaches 85-90 ℃, and is transferred to the constant temperature 65-75 ℃ material tank through the pipeline. The specific operation steps are as follows:
[0039] 1. The first heating and conveying: the A component paint in the two-component solvent-free paint is sent to the No. 1 oven 16 for preheating, and the B component paint is sent to the No. 2 oven 17 for preheating. The No. 1 oven 16 and The heating temperature in No. 2 oven 17 is controlled at 75-90°C. After heating, the A-component paint is delivered to the heating bucket A1 throu...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
Login to View More
Abstract
The invention provides a spray device and method for a high-viscosity solvent-free inner resistance-reducing coating material. A heating charging basket A and a heating charging basket B in the devicecommunicate with a high-pressure pump A and a high-pressure pump B by heating hoses separately; the high-pressure pump A and the high-pressure pump B communicate with a fluid heater A and a fluid heater B by heating hoses separately; the fluid heater A and the fluid heater B communicate with an integrated mixer and a static mixer by heat-insulation pipes separately; and the static mixer communicates with an automatic spray gun by a mixing pipe. The method is carried out according to the following steps: 1, first-time heating conveying; 2, parameter control; 3, pressure-control conveying; 4, second-time heating; 5, mixing for the coating material; 6, spray for the mixed coating material; 7, backflow for the coating material; and 8, cleaning for a pipeline. According to the method, during spray working of the double-component coating material, accurate control is carried out on the heating temperature of the coating material, and the coating material is small in spray amplitude change width, so that the high thickness uniformity of an inner resistance-reducing coating layer is guaranteed.
Description
technical field [0001] The invention relates to the application fields of coatings and chemical materials, in particular to a spraying device and method for high-viscosity solvent-free internal drag-reducing coatings. Background technique [0002] The solvent-free internal drag-reducing coatings in the prior art have a high solid content, generally up to 100% solid content, completely free of solvents, very environmentally friendly, and almost free of organic volatile matter, and have been used in many fields. It is relatively easy to form a film with a thickness of more than 500 μm at one time on gas and oil pipelines. Compared with solvent-based coatings, it reduces the process of multiple coatings and meets the thick coating requirements of heavy-duty anti-corrosion. However, for the internal drag-reducing coating required by the gas pipeline project, the thickness is only 90-150μm, the high solid content is not good news, because the solid content is high, the viscosity ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B05B7/04B05B7/16B05B12/10B05B12/14
CPCB05B7/0408B05B7/166B05B12/10B05B12/14
Inventor 徐腊梅蔡小青蔡绪明冯鹏霄张新芳石振聪吴世杰
Owner SINOPEC OILFIELD EQUIP CORP