medium temperature of the directly buried steel sleeve steel thermal insulation
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medium temperature of the directly buried steel sleeve steel thermal insulation

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In the area where the groundwater level is high, in order to ensure that the groundwater does not affect the normal operation of the directly buried steam pipeline, it is better to use a solid and airtight steel pipe shell for the outer protective layer. Second, according to the different sliding mode, the thermal insulation structure of steel sleeve steel pipe is divided into inner sliding type and external sliding type, inner sliding type: the thermal insulation structure is composed of working steel pipe, aluminum silicate, drag reduction layer, microporous calcium silicate, heat insulation layer, stainless steel fastening steel strip, aluminum foil reflective layer, polyurethane insulation layer, outer steel pipe and external anti-corrosion layer.

Because of the high medium temperature of the directly buried steel sleeve steel thermal insulation elbow, the temperature can reach 300℃-350℃ in many cases, and its thermal insulation structure needs to be “detached”, that is, the working steel pipe is detached from the insulation layer or external protection pipe. Generally speaking, the type of thermal insulation mechanism is mainly divided into inner sliding type and external sliding type. The inner sliding surface is on the outer surface of the working steel pipe, and the thermal insulation material and the outer protective pipe are relatively fixed, mainly because the working steel pipe expands and moves in the thermal insulation material.

Fuyang steel sleeve steel glass cotton thermal insulation steel pipe is unique in order to eliminate the above condensed water and remove wet steam during start-up, the steam pipe should have sufficient capacity for drainage and sewage installation. The drainage and sewerage system of the steam pipe should be able to ensure that condensate and wet steam can be discharged from the preheating pipe section before it is put into operation. The outer thrust plate of the steel jacket of Liaoyuan steel jacket can be integrated with the shaft wall to reduce the radial thrust of the pipe. The prefabricated shaft wall seal is equipped with the outer ring plate thrust plate and the shaft wall as a whole. After being stabilized, the shaft wall seal has the integrity between the shaft wall and the well wall, which can resist the elastic force of the bellows after working. The bellows of the product is connected with the outer casing and the core pipe, which not only isolates the connection between the insulation layer and the well chamber, but also compensates the thermal displacement of the core pipe.

medium temperature of the directly buried steel sleeve steel thermal insulation

Longnan prefabricated directly buried insulation pipe manufacturers sell at the same time its foaming pores are closed, water absorption is very small. High density polymer shell and FRP shell have good anticorrosion, insulation and mechanical properties. Therefore, the outer skin of working steel pipe is difficult to be eroded by external air and water. As long as the internal water quality of the pipeline is well treated, according to foreign data, the service life can reach more than 50 years, which is 3 or 4 times longer than that of trench laying and overhead laying. 3, compensator: because the temperature of the steam pipe is relatively high, the pipe will be expanded by heat, so there needs to be a component to absorb this part of the margin, so as to prevent the valve and other components from being damaged. The compensator can be divided into directly buried external pressure and directly buried internal pressure, rotary compensator, sleeve compensator, etc., 4, fixed frame: it is used to divide the whole pipeline into several sections, each section in the compensator to compensate, so as to ensure the overall operation of the pipeline.

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