Anticorrosion and heat insulation construction of purification engineering

Anticorrosion and heat insulation construction of purification engineering

The anti-corrosion treatment of the support and hanger of the purification project should be consistent with the air duct and pipeline, and the surface-mounted part must be painted with topcoat; the outer surface of each air-conditioning and refrigeration system pipeline should be color-coded according to the design regulations; Before painting, check whether the surface treatment of pipes or pharma machinery meets the requirements. Before painting...

Text label: purification engineering construction, purification engineering anticorrosion and heat insulation, purification engineering company

Anti-corrosion and heat insulation construction of purification project

The anti-corrosion treatment of the support and hanger of the purification project should be consistent with the air duct and pipeline, and the surface-mounted part must be painted with topcoat; the outer surface of each air-conditioning and refrigeration system pipeline should be color-coded according to the design regulations; Before painting, it should be checked whether the surface treatment of the pipeline or equipment meets the requirements. The surface of the pipeline or pharma machinery must be thoroughly dried before painting; the environmental conditions must be mastered during the painting time, and the ambient temperature of the painting should not be too low or the relative humidity should not be too high. Otherwise, the volatilization time of the paint will be too long and the anti-corrosion performance will be affected. Generally, the ambient temperature should not be lower than 5 °C and the relative humidity should not be greater than 85%; The consistency of the paint should not be too large or too small. Excessive consistency will not only waste the paint, but also cause peeling, rolling and other phenomena. If the consistency is too small, there will be leakage, air bubbles, and exposed bottom. The anti-corrosion work of the air duct usually takes two forms: pre-production and production. Before the air duct is made, the anti-rust primer is painted on the steel plate in advance. The advantage is that the painting quality is good, and there is no leakage of coating. All have paint to prolong the service life of the air duct, and the excess scraps after cutting will not corrode in a short time and can be recycled; in the process of making the air duct, the steel plate must be painted with anti-rust primer on the bite part first.

The blades and body of the return air outlet and air valve should be painted with anti-rust primer according to the situation before assembly, which can prevent the phenomenon of missing coating. Corrosion occurs; the anti-corrosion work of the pipe support and hanger must be carried out after the prefabrication of the material. It should be avoided that the pipe is hoisted to the support and then painted, so that the contact part of the support, the hanger, the bracket and the pipe is missed. Wipe the outer surface of the air duct, its fittings, and valves. It is forbidden to use reagents that have a destructive effect on the galvanized layer. After wiping, apply super glue to the heat-insulating aluminum nail base, and then stick to the air duct, fittings, and valves. On the outer surface of the duct, the first row of insulation nails should be 50mm close to the edge of the air duct when bonding, and they should be evenly arranged in a triangle; 12 hours after bonding the insulation nails, tie the insulation board or coil into the insulation nails, and use the insulation nail matching baffle to penetrate Press the mandrel into the insulation layer by 2-3mm, make sure that the insulation layer is close to the outer surface of the air duct, put air into the gap between the insulation layer and the air duct to generate condensed water, and then break the mandrel exposed outside the baffle. Bend at 90°. Zhongjing Global Purification can provide consulting, planning, design, construction, installation, transformation and other supporting services for purification projects and cleaning projects. It has qualifications in decoration, electromechanical installation, purification industry, and many successful cases.

When using glass wool board with aluminum foil for insulation, after the insulation material is installed, it is necessary to stick the seam with pressure-sensitive aluminum foil tape with a width of 50-60mm. In addition, when the end section of the insulation board is exposed, it should also be sealed with aluminum foil tape Sticky; thermal insulation work is best carried out at the end of other professional shed projects, 1-2 weeks before the installation of the decorative shed, mainly to avoid scratching damage to the thermal insulation protective layer, and carefully check the scratches before the shed surface is closed. And use aluminum foil tape to fix the scratches; the thermal insulation material should be laid so that the vertical and horizontal seams are staggered, and small pieces of thermal insulation material should be laid on the upper surface of the air duct as much as possible; if rock wool insulation materials are used, they should be laid on the flange Apply fixing glue on the cross section of the thermal insulation material to prevent the fibers from being blown up, and the inner surface of the rock wool should be coated with a cured coating; when using the aluminum-magnesium standard coiled felt, first apply the aluminum-magnesium paste directly to the coiled felt. The thickness is 2-5mm. Paste the roll felt coated with paste directly on the equipment or pipeline. If more than two layers of roll felt need to be made, paste the paste coated roll felt in layers. , until the thermal insulation thickness required by the design is reached, the surface can be lightened with a paste material of about 2mm; after the surface light-receiving layer is dried, special treatment can be carried out, such as applying waterproof paint, paint or wrapping glass fiber cloth, Composite aluminum foil, etc.

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