Inside Sliding Structure of Direct Buried Steam Insulation Pipe
1) Inner steel pipe / 2) Zinc-rich primer / 3) drag reduction layer / 4) thermal insulation data (calcium silicate) / 5) radiation reflector / 6) thermal insulation data (polyurethane) / 7) external protective layer
Sliding Structure in Steam Insulation Pipe
Structural characteristics of "internal sliding" of directly buried steam insulation pipe:
1) After shot peening and rust removal, the inner steel pipe reaches Sa2.5 (near white grade), and is coated with inorganic rich front primer to avoid the corrosion of the inner steel pipe caused by water vapor entering the insulation layer during the construction period.
2) Pipeline shrinkage occurs displacement when heated, and a layer of drag reduction layer wrapped inside the inner steel pipe can increase the resistance of the inner steel pipe to move on the insulation layer.
3) Microporous calcium silicate is used to wrap the inner layer of heat preservation material in staggered seams on the inner steel pipe and fill the gap with low temperature and high elasticity heat preservation material. Invalidity increases the heat loss.
4) The polyurethane insulation material is selected for the outer layer insulation. The excellent insulation function of polyurethane is applied to control the outer temperature of the outer protective layer below 50 C, maintain the outer protective layer and add the whole life of the pipeline.
5) Participate in the "reflective layer" between the two layers of thermal insulation data to control the heat radiation loss and make the directly buried steam insulation pipe more economical and reasonable.
6) There are many ways to choose the outer protective layer of steam insulating pipe, including FRP, casing and anti-corrosion layer. The anti-corrosion layer is various, and the steel casing can not be corroded by groundwater if it is not effectively maintained.
In summary, all the above-mentioned Shandong Hipper Pipe Technology Development Co., Ltd. provides more knowledge of Jinan insulation pipe. Welcome to our website: https://www.sdhpgy.com. Thank you for your support!
