Polyurethane insulation pipe is mainly used in the north central heating, hot water conveying 50-140 degrees, in some areas in the south, can be used for the concentration and cooling industry is divided in two types: the power of hot and cold water. Pu heat preservation pipe prices more affordable, so the application is very extensive, another application most, is the long distance pipeline oil, oil because the viscosity is very high, must ensure that a certain temperature to normal flow, as long as it is the temperature is below 140 degrees, medium need heat preservation, can adopt the form of heat preservation, pipe work depending on the medium can be changed. The installation often appear a problem, will slide displacement, the following pu heat preservation pipe manufacturer to teach everyone how to solve the problem:

In one, sliding external fixation

Polyurethane insulation pipe heat expands, will change movement, produce displacement phenomenon is possible, and heat insulation layer and outer casing is usually an integral structure. External fixation of work outside the steel pipe and pipe protection must be fixed in order to be good together, in each section of the pipeline and a compensator at both ends, all want to set up two large reinforced concrete piers, so to ensure that the pipeline has fixed the inconvenience. External fixation for reinforced concrete piers must set, so the construction covers an area of big, more investment, long construction period sometimes, so pay attention to the good before. According to want to use the external protecting tube of different, can divide again for plastic set of steel structure, glass fiber reinforced plastic set of steel structure and steel set of steel structure. After practice proves that the model set of steel structure has not adapted to the development trend of directly buried steam pipeline.

Second, within the sliding internal fixation

Out the structure of the work steel pipe through a certain fixed protection tube, make full use of external protecting tube strength and stiffness, and friction between the external protecting tube with the soil to further make the tube fixed good, need not reinforced concrete structure is fixed, the construction of a reinforced concrete piers can be saved. Only to steel tube as the external protecting tube may adopt the fixed form, the fixed end insulation facilities, to reduce the heat bridge effect, at the same time, external protecting tube should have sufficient strength, to meet the requirements of pipeline horizontal thrust. For & quot; Steel set of steel & quot; Thermal insulation structure, structure of internal fixation has great superiority. Depending on the external protecting tube, and can be divided into steel set of steel structure and steel set of steel composite structure.

Three, use opportunely outside sliding inside a fixed form

Steel tube polyurethane insulation pipe insulation material and work through a certain process to combine, in the final it can form a whole, insulation structure and the work steel pipe must be moving together when pipeline thermal expansion. Heat insulation layer between the outer casing and the periods of 10 to 20 mm, so the design of the structure can not only have good insulation effect, for moisture removal is also a kind of perfect channel. Work between steel tube and outer sleeve with a set of heat from a distance guide bracket to support, so that we can reduce the friction when pipeline displacement, so when the mobile will be more simple and rapid.