Construction technology of insulation heat preservation layers of deep cooling pipeline connecting equipment

Abstract

The invention discloses a construction technology of insulation heat preservation layers of deep cooling pipeline connecting equipment. The construction technology comprises the following steps that firstly, according to the equipment size and requirement, heat preservation blocks are prefabricated, and then, the heat preservation blocks are longitudinally bonded on the surface of the equipment at intervals; foam is sprayed on the surface of the equipment between the heat preservation blocks for priming, when the thickness of priming reaches 50% of the total thickness, metal outer protecting layers are installed on the exterior of the equipment from bottom to top in sequence, and the foam is injected and molded in interior spaces as every layer is installed until the layer is installed at a sealing head of the equipment; and finally, foam spraying is conducted on the sealing head, and then the metal protecting layers are installed to achieve whole installing completing. By means of the construction technology of the insulation heat preservation layers of the deep cooling pipeline connecting equipment, heat preservation processing on the connecting equipment is achieved, and the whole heat preservation performance is ensured.

Description

technical field [0001] The invention relates to a thermal insulation system of cryogenic pipeline connection equipment, in particular to a construction process of an insulation layer of cryogenic pipeline connection equipment. Background technique [0002] With the advancement of technology and the improvement of human living standards, the application range of cryogenic liquefied substances such as liquefied natural gas (LNG), liquid nitrogen (LN2), liquid oxygen (LO2), liquid carbon dioxide (LCO2), and liquefied petroleum gas (LPG) has gradually increased. Expansion, especially LNG, consists mainly of methane. LNG is condensed into a liquid by cooling gaseous natural gas at normal pressure to -162°C. The storage and transportation space can be greatly saved after natural gas is liquefied. The volume after liquefaction is about 1 / 600 of the gaseous volume, and it has the characteristics of large calorific value and high performance. LNG is a clean and efficient energy sou...

AI Technical Summary

Problems solved by technology

[0003] However, at present, the domestic transportation of cryogenic medium represented by LNG still relies on tank trucks or gaseous pipeline transportation. Pipelines are the more common form of transportation. Generally, some auxiliary equipment will be connected between the pipelines. Because it is an auxiliary equipment, many manufacturers do not pay too much attention to its insulation. However, it has been proved that the insulation performance of the equipment has a great impact on the overall transportation insulation.

Images