In the fields of petrochemical, water, heating, industrial refrigeration, etc., most of the traditional anti-corrosion and thermal insulation measures are made of asbestos, ash or polyurethane, and the outer layer is made of asbestos cloth for anti-corrosion and heat preservation. The effect is not ideal. Recently, the reporter saw in an interview with the new thermal insulation material factory of Qilu Petrochemical Life Management Department that a polyethylene prefabricated thermal insulation sleeve that can be overhead or directly buried came into being, opening up a new space for anti-corrosion insulation materials. This kind of new building materials that the country is promoting and applying in the construction field has many advantages such as environmental protection, good performance and simple construction, and is increasingly favored by the market.
Li Fujun, director of Qilu Petrochemical's new thermal insulation material factory, told the reporter that the polyethylene outer casing is made of high-density polyethylene. The diameter and length of the product can be adjusted according to the user's needs. The construction and installation is carried out by the thermal insulation material factory. The steel pipe which needs anti-corrosion insulation is placed in the polyethylene casing, and the polyurethane foam is injected into the middle to fully fill the gap between the steel pipe and the polyethylene casing, and finally the steel pipe, the casing and the heat insulation layer form a firm whole. To achieve the effect of anti-corrosion insulation; this anti-corrosion insulation method can be overhead or buried in the ground, the entire construction process is carried out on site?
According to reports, compared with the traditional direct buried insulation materials, the polyethylene outer casing has the characteristics of high mechanical strength, good sealing performance, strong corrosion resistance, low heat loss and long service life, which are manifested in the following aspects: Through the setting of fixed support and sliding support mechanical compensator, the deformation of the direct buried heat preservation pipe is standardized and coordinated, and the engineering damage caused by thermal expansion and contraction is eliminated; it can be effectively waterproof, moisture proof, acid, alkali, salt and oil resistant. And the overall good, beautiful and generous, no deformation, the structure does not enter the water; by setting the polyurethane foam layer, the insulation layer and the outer sheath form a whole, solving the corrosion problem of the steel of the overhead and direct buried insulation pipe The service life is up to 30 50 years, while the traditional insulation material has a short service life, generally only between 35 years; the polyurethane foam filled in the casing has good mechanical properties and thermal insulation properties, and is usually durable in operation. The temperature is 120 degrees Celsius and the short-term temperature is 130 degrees Celsius.
Li Fujun, director of Qilu Petrochemical's new thermal insulation material factory, told the reporter that the polyethylene outer casing is made of high-density polyethylene. The diameter and length of the product can be adjusted according to the user's needs. The construction and installation is carried out by the thermal insulation material factory. The steel pipe which needs anti-corrosion insulation is placed in the polyethylene casing, and the polyurethane foam is injected into the middle to fully fill the gap between the steel pipe and the polyethylene casing, and finally the steel pipe, the casing and the heat insulation layer form a firm whole. To achieve the effect of anti-corrosion insulation; this anti-corrosion insulation method can be overhead or buried in the ground, the entire construction process is carried out on site?
According to reports, compared with the traditional direct buried insulation materials, the polyethylene outer casing has the characteristics of high mechanical strength, good sealing performance, strong corrosion resistance, low heat loss and long service life, which are manifested in the following aspects: Through the setting of fixed support and sliding support mechanical compensator, the deformation of the direct buried heat preservation pipe is standardized and coordinated, and the engineering damage caused by thermal expansion and contraction is eliminated; it can be effectively waterproof, moisture proof, acid, alkali, salt and oil resistant. And the overall good, beautiful and generous, no deformation, the structure does not enter the water; by setting the polyurethane foam layer, the insulation layer and the outer sheath form a whole, solving the corrosion problem of the steel of the overhead and direct buried insulation pipe The service life is up to 30 50 years, while the traditional insulation material has a short service life, generally only between 35 years; the polyurethane foam filled in the casing has good mechanical properties and thermal insulation properties, and is usually durable in operation. The temperature is 120 degrees Celsius and the short-term temperature is 130 degrees Celsius.
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