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The heat preservation elbow
The heat preservation elbow

The heat preservation elbow

Insulation elbow is a kind of insulation pipe fitting. The insulation elbow is composed of high-density polyeth...
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Insulation elbow is a kind of insulation pipe fitting. The insulation elbow is composed of high-density polyethylene outer sleeve, polyurethane foam insulation layer and inner working steel pipe. Insulation elbow is mainly used for the steering of insulation straight pipe, generally used with insulation pipe, according to the insulation engineering pipeline design for compensation function, so that elbow position can also have enough insulation performance, standard elbow Angle: 30 degrees, 45 degrees, 60 degrees, 90 degrees.

Insulation elbow is widely used in liquid and gas pipeline network, chemical pipeline insulation project petroleum, chemical industry, central heating network, air conditioning and ventilation pipeline, municipal engineering pipeline bend. Insulation pipe (including elbow, three, four) is a good insulation performance, reliable, low cost of direct buried prefabricated insulation pipe. It effectively solves the problems of heat preservation of heat preservation pipe, heat preservation of bending parts, sliding lubrication, exposed pipe end, waterproof and anticorrosive at the eight bends in various pipeline projects such as heating, cooling, heating, electric power, chemical engineering, etc. It not only has the advanced technology and practical performance which is hard to compare with the traditional trench and overhead pipe laying, but also has the remarkable social and economic benefits, the heat preservation direct pipe turning.

Execution standard

CJ/T200 -- 2004 technical conditions for precast directly buried steam insulation pipe for urban heating

CJ/T104---2005 technical regulations for buried steam pipelines for urban heating

SY/ t114-2000, SY/ t115-2001 high-density polyethylene polyurethane foam insulation steel pipe

The utility model is composed of a bend of conveying medium, a steel pipe with anticorrosive jacket and a polyurethane filled pipe between the elbow and the jacket. The thermal insulation elbow is the same principle as the direct buried thermal insulation pipe, which is a new buried technology of waterproof, leak-proof, impermeable, pressure-resistant and completely closed, and it is a great breakthrough of the direct buried laying technology used in areas with high underground water level. Protecting tube problems of directly buried pipeline is closely waterproof reliability, in addition to have good mechanical strength, thermal insulation bend due to high strength using high density polyethylene outer casing and polyurethane foam insulation layer and inner work closely integrated steel tube, waterproof sealing performance reliability is very high, in addition, the high temperature resistant performance is also can't be matched by other external protecting tube.

Mechanism of the structure

1. High-density polyethylene anticorrosive coating: high-density polyethylene pipe protects elbow from corrosion and plant corrosion and prolongs the service life of pipe fittings.

Support the working pipe and can bear certain external load to ensure the normal work of the working pipe.

2, polyurethane foam layer: high temperature resistance, to ensure the temperature of the medium, to ensure that the surface of the outer sheath tube is kept at normal temperature, the inner working pipe insulation,

Ensure the foam is not carbonized.

3. Working steel pipe: ensure normal flow of conveying medium.