Liquid methane filling-up system

A filling system, methane technology, applied in the field of filling systems, can solve the problems of high risk of testing and easy leakage of the testing system, and achieve the effect of improving safety and reliability

Active Publication Date: 2014-06-18
XIAN AEROSPACE PROPULSION TESTING TECHN INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, during the liquid oxygen-methane fuel filling process of the aerospace engine currently used as fuel, the system working pressure is 23MPa, and the test system is very prone to leakage, so the test risk is high

Method used

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Embodiment Construction

[0030] The invention satisfies the safety requirements of the methane filling of the aerospace engine test bench and the discharge of residual methane during the test run and after the test run by establishing a whole set of liquid methane filling system.

[0031] combined with figure 1 To describe the system:

[0032] A liquid methane filling system is divided into five parts, namely: filling unit 1, pre-testing unit 2, container unit 3, pressurization and exhaust unit 4, and recovery and discharge unit 5;

[0033] Among them, the filling unit 1 includes a methane transport tank car 6, a first nitrogen gas source 7, a system filling blow valve (V18) 8, and a system filling valve 9 (V02 or V03); the outlet of the methane transport tank car 6 is connected to the system filling Injection valve 9 (V02 or V03) inlet; one end of the system filling blow valve (V18) 8 is connected to the first nitrogen gas source 7, and the other end is connected to the outlet of the system filling ...

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Abstract

The invention relates to a liquid methane filling-up system which is suitable for a filling-up system of flammable and combustible fuels such as methane. The liquid methane filling-up system comprises a filling unit, a front testing unit, a container unit, a pressurizing and exhausting unit and a recycling and discharging unit, which are communicated with one another and are cooperated to achieve the operations of nitrogen gas blowing of the system, filling of a methane container, low-pressure precooling of the system, high-pressure precooling of the system and the like, and particularly, each unit is also provided with a methane concentration real-time alarm device. According to the liquid methane filling-up system, the safety and the reliability for liquid methane filling operation are greatly improved.

Description

technical field [0001] The invention relates to a filling system, which is suitable for filling systems of inflammable and explosive fuels such as methane. Background technique [0002] Usually, the mixture of methane and air can form an explosive gas mixture. According to research, the lower explosion limit of the gas mixture (volume fraction) is 3.6% to 6.5%, and the upper explosion limit is 13.0% to 17.0%. If there is a fire source, it is very easy to catch fire and even explode, and it is a flammable and explosive product. [0003] At present, during the filling process of the liquid oxygen-methane fueled aerospace engine, the working pressure of the system is 23MPa, and the test system is very prone to leakage, so the test risk is high. The test run of the liquid oxygen methane component is carried out by methane transporting low-temperature tank trucks, directly adding methane into the methane container, and the test run is carried out after the system pipeline is pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17C5/02F17C13/02F17C13/04
Inventor 王朝唐斌运沈继斌曹文庆
Owner XIAN AEROSPACE PROPULSION TESTING TECHN INST
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