LNG gasification pressure regulating device and LNG gasification pressure regulating process

The invention discloses an LNG gasification pressure regulating device and an LNG gasification pressure regulating process. The LNG gasification pressure regulating device comprises an LNG low-temperature storage tank, an air-heated reheating machine, a gasification mechanism, a water-soluble electric heater, a double-path pressure regulating pipeline and an odorization mechanism, wherein the LNG low-temperature storage tank is connected with the gasification mechanism through a low-temperature pneumatic shut-off valve, the gasification mechanism comprises two air-heated gasification machines connected in parallel, the gasification mechanism is connected with the double-path pressure regulating pipeline through a gas-liquid separator, a pipeline between the gasification mechanism and the double-path pressure regulating pipeline is connected with a parallel branch, the water-soluble electric heater is arranged on the branch, the double-path pressure regulating pipeline is connected with the odorization mechanism, the front side of the double-path pressure regulating pipeline is connected with a loop, and the gas-liquid separator is arranged in the loop which is communicated with a flash steam pipeline. According to the LNG gasification pressure regulating device, the safe and stable gasified pressure regulation of LNG can be realized, and by adopting the combination of single-path pressure regulation of the double-path pressure regulating pipeline and the flash steam pipeline with the odorization mechanism, the LNG gasification pressure regulating device has the functions of filtering, regulating the pressure, dispersing, and cutting, and has the advantages of safety, stability, high operation precision and environmental friendliness.