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Method for testing gasification amount of LNG air temperature gasifier through liquid nitrogen and testing system

A test method and test system technology, applied in liquid/fluid solid measurement, measurement device, measurement flow rate/mass flow rate, etc., can solve the problem of gasification amount calculation error, etc., and achieve the effect of accurate gasification amount value

Pending Publication Date: 2020-05-26
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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  • Abstract
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  • Application Information

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Problems solved by technology

[0016] The purpose of the present invention is to solve the problem that the calculation error of gasification amount is relatively large due to the difference in heat transfer performance between nitrogen and natural gas

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  • Method for testing gasification amount of LNG air temperature gasifier through liquid nitrogen and testing system
  • Method for testing gasification amount of LNG air temperature gasifier through liquid nitrogen and testing system
  • Method for testing gasification amount of LNG air temperature gasifier through liquid nitrogen and testing system

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Embodiment Construction

[0050] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0051] It should be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may also be meant to include the plural forms unless the context clearly dictates otherwise. The terms "comprising", "comprising", "containing" and "having" are inclusive and thus indicate the presence of stated...

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Abstract

The invention discloses a method for testing the gasification amount of an LNG air temperature gasifier through liquid nitrogen and a testing system. The method comprises the following steps of: 1, adjusting the liquid nitrogen gasification amount to the marked LNG gasification amount, 2, measuring the temperature and pressure of the inlet and the outlet of the LNG air temperature gasifier, 3, determining related physical property parameters, namely Qm, dN, dm, HN, Hm and k, related to nitrogen according to the temperature and pressure, and 4, calculating the LNG gasification amount in a reference state through a formula. The invention provides a testing method, a corresponding testing system and a correction coefficient k of the influence of different physical properties of nitrogen and natural gas on heat transfer. According to the method, during calculation, the state difference between nitrogen and natural gas is considered, and the influence of the difference between the nitrogenand the natural gas on the heat exchange performance due to the heat exchange performance is also considered, so that the measured gasification quantity value of the natural gas air temperature gasifier is relatively accurate.

Description

technical field [0001] The invention belongs to a test method and a test system. Specifically, the invention uses liquid nitrogen instead of liquefied natural gas to test the gasification capacity of a liquefied natural gas gasification device. The method can simply and accurately measure the gasification capacity of the device. Background technique [0002] In recent years, the position of natural gas in energy supply has become more and more important, and the demand has increased greatly. LNG point supply, as an important natural gas supply method, has also been widely used. Therefore, it is imperative to standardize as a small and medium-sized LNG skid-mounted gas supply device. Air-temperature vaporizer is an important LNG gasification device, how to test its gasification capacity index is also one of the standardized contents. The current method used in the industry is that the outlet temperature of the air-temperature vaporizer should not be lower than the ambient t...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M99/00G01F1/00
CPCG01F1/00G01M99/005
Inventor 刘蓉史永征杨洋王浩
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE