Heat insulation and preservation system applied to low-temperature storage tank

Abstract

The invention discloses a heat insulation and preservation system applied to a low-temperature storage tank. The system comprises an inner heat preservation layer and an outer heat preservation layerwhich are fixed to the surface of the low-temperature storage tank, the inner heat preservation layer is composed of a plurality of heat preservation plates, studs are fixed to the surface of the low-temperature storage tank, and the studs are located in gaps between every two adjacent heat preservation plates. The upper ends of the studs are sleeved with fixing discs, and the fixing discs are pressed on the outer surfaces of every two adjacent heat preservation plates and locked through nuts. The outer heat preservation layer is made of a polyurethane foaming material sprayed outside the inner heat preservation layer. The system is excellent in heat preservation performance, easy to install, firm in connection, not prone to cracking and long in service life.

Description

technical field [0001] The invention relates to a thermal insulation system, in particular to a thermal insulation system applied to low-temperature storage tanks. Background technique [0002] At present, the insulation measures for low-temperature storage tanks and fuel tanks on ships are mainly in the form of polyurethane spray foam or pasted insulation boards. [0003] Although the cost of polyurethane spray foam is low, the thickness of each spray foam has a certain limit. If the foam spray is too thick at one time, it will cause heartburn. At the same time, the material properties of polyurethane itself are limited by insufficient scalability. In the case of expansion and contraction, polyurethane is prone to cracking. In the form of pasting the insulation board, although the cracking of the material has been well controlled, the pasting performance will be affected by factors such as humidity, temperature, and construction technology, resulting in the problem of past...

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Problems solved by technology

[0003] Although the cost of polyurethane spray foam is low, the thickness of each spray foam has a certain limit. If the foam spray is too thick at one time, it will cause heartburn. At the same time, the material properties of polyurethane itself are limited by insufficient scalability. In the case of expansion and contraction, polyurethane is prone to cracking

In the form of pasting the insulation board, although the cracking of the material has been well controlled, the pasting performance will be affected by factors such as humidity, temperature, and construction technology, resulting in the problem of pasting failure. When the shrinkage of the storage tank is large, it will also There is a possibility of cracking. At the same time, the thickness of the insulation board is thick and the number of layers is large, which will increase the processing cost of the factory

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