Full vacuum horizontal lng submersible pump pool

Abstract

The invention relates to a full-high vacuum horizontal LNG submersible pump tank, which includes a pump tank body, a submersible pump and a support. The outer casing of the liquid port is fixedly connected with a vacuum joint, and the vacuum joint of the outer casing of the liquid outlet pipe is connected with the inner space structure of the liquid outlet device, and together with the high vacuum insulation of the inner and outer cylinder interlayers of the pump pool, the submersible pump pool is formed as a whole with a full height Vacuum insulation structure. The invention adopts full-high vacuum heat insulation, which isolates all heat leakage paths of convection, conduction and radiation heat transfer, and has excellent cold preservation performance; the daily evaporation rate of the LNG liquid in the pump pool is higher than that of the vertical submersible pump pool of the prior art. The daily evaporation rate decreased by 21.5%~31.5%. And it has been extended to vehicle-mounted LNG transportation and filling vehicles, which has significantly improved the economic benefits of LNG filling stations and LNG transportation and filling vehicles.

Description

technical field [0001] The invention relates to an LNG submersible pump pool, in particular to an all-vacuum horizontal LNG submersible pump pool. Background technique [0002] As of the end of November 2012, the number of LNG refueling stations in operation in China has risen to more than 600; from 2015 to 2020, the number of LNG refueling stations is expected to exceed 10,000, and the growth of the industry is astonishing. [0003] Liquefied natural gas (LNG) vehicle is a new energy vehicle, which has the advantages of economy, safety, environmental protection, convenience, mobility, long mileage, short filling time (compared to compressed natural gas), etc. It is widely promoted and used among cargo trucks, and it is an ideal way for large-scale development of natural gas vehicles in cities. According to statistics, 60% of urban atmospheric pool environmental pollution comes from motor vehicle exhaust. Test data show that: buses use LNG fuel, and the comprehensive exhau...

AI Technical Summary

Problems solved by technology

At present, LNG vehicle filling stations at home and abroad are all "vertical non-full vacuum LNG submersible pump pools". The static pressure head of the phase inlet and the non-vacuum insulation of the equipment flange cover on the top of the pump pool directly affect the normal and stable operation of the LNG cryogenic centrifugal pump. At the same time, the discharge rate of the LNG cryogenic storage tank also affects the efficiency of the LNG vehicle filling station. The operating cost and the filling efficiency of whether the submersible pump is in normal operation are not up to the expected economic benefits of the initial station construction

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