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Prefabricated overhead steam insulation pipe
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Prefabricated overhead steam insulation pipe
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PRODUCTSTRUCTURE
The composite heat preservation structure of steel jacket is adopted, and the sequence from the working pipe to the outer protection pipe is as follows.
Working steel pipe - vibration damping heat preservation layer - radiation heat insulation layer (aluminum foil reflective cloth) - microcellular calcium silicate tile - radiation heat insulation layer (aluminum foil reflective cloth) - polyurethane foam - alloy outer protection tube.The structure in which the outer casing pipe and the heat insulation material rub against the working pipe as a whole.
EXTERNALLY PROTECTED PPES
● Adopt automatic mechanical nipping production process of alloy plate spiral; the nipping seam should be tight, the width should be consistent and the arc should be uniform.
● There should be no obvious twisting and warping of the outer protection pipe; the surface should be flat and the concavity and convexity should not be more than 10mm.
● The inner and outer surfaces should be free from scratches and other serious damages that may affect its anti-corrosion performance;
● The two end surfaces should be parallel and perpendicular to the axis of the outer protection pipe, and the permissible deviation of the flatness of the pipe opening should not be more than 2mm;
● The two end surfaces should be parallel and perpendicular to the axis of the outer protection pipe.
● Strength and tightness should meet the requirements, when the test pressure is maintained for 5min and above, there should be no cracks at the joints, and there should be no permanent deformation and damage to the overall structure, and the permissible air leakage should be in accordance with the provisions of GB50243 (high-pressure air duct).
PIPE FTTINGS INSULATON
● Overhead pipe fittings, valves on-site insulation
By the insulation pipe manufacturers are responsible for, the insulation material selection of environmentally friendly glass wool, recommended to be equivalent to or higher than Owens Corning,Calabrese products, the density of not less than 45kg/m³; the outer layer of alloy board, the thickness is the same as the straight pipe.Insulation structure from the inside to the outside in order: insulation layer, reflective layer, outer protection layer.
● Overhead fixed pipe support, sliding pipe support, guide pipe support
Prefabricated steam pipe insulation and pipe fittings", the construction unit on-site installation construction.
● Overhead evacuation pipe insulation
It is recommended to use products equivalent to or higher than Owens Corning and Calabrese, with a density of not less than 45kg/m³; the outer protection layer is made of alloy plate, with a thickness of 0.5-0.8mm.
● Joint insulation
On-site joint insulation adopts soft or rigid structure, the outer protection layer adopts alloy board, the free end of the axial lap length of the outer protection layer is not less than 100mm.
PRODUCT STRUCTURE
Each type of insulation material has its advantages and disadvantages, our company at least two types of insulation materials for composite, to multi-screen reflective structure, in order to maximize the advantages of each type of insulation material.
Insulation material performance comparison table | |||||
Index | Aerogel | High core glass wool | Aluminum silicate | Microporous calcium silicate | |
Bulk weight(kg/m) | 200 | 50 | 50-150 (can be customized) | 170-240 | |
Thermal conductivity | 0.018 | 0.033 | 0.035 | 0.058 | |
Thermal conductivity (200℃ -300C (W(mTk)) | 0.02-0.03 | 0.07-0.08 | 0.08-0.09 | 0.06-0.07 | |
Maximum operating | 650 | 454 | 1000 | 650 | |
Features | Waterproof, moisture-proof, non-polluting environment, anti-aging, non-combustible Class A. | Non-toxic, harmless, non-irritating, non-flammable Class A. | Light weight, long service life, high tensile strength, good elasticity, non-toxic, non-combustible Class A. | It has high bending resistance, high compressive strength, good heat resistance, non-toxic, non-combustible Class A, can be sawed, easy to process, and does not corrode pipelines. | |
Evaluate | Low thermal conductivity, good hydrophobicity, and good resistance to environmental influences. | It has moderate temperature resistance, moderate cost and good boiling resistance. | It is non-flammable, has high temperature resistance, moderate cost, high density, poor boiling resistance and poor hygroscopicity. | It has high temperature resistance, moderate cost, high strength, hardness, poor hygroscopicity and easy damage. | |
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Add: No.9,No.2 Road, North District, Jinghai Economic Development Zone, Tianjin, China
Tel: 15620608007 E-mail: sale@tdl-pipe.com