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引言 随着我国现代化建设和经济的飞速发展,环境环境保护日益成为公众关注的重要问题,许多大中城市为减少空气污染,已经开始实施液化气代替汽油作为汽车燃料的“清洁空气”行动,大批使用液化气、天然气等清洁性燃料的公交巴士和出租汽车运营在城市主干道和市民聚居区,城市空气中氮氧化物和重金属含量明显下降,空气质量得到明显改善,深受广大城市居民的欢迎,为保证清洁性燃料汽车的正常运行,必须在城市内设置相当数量的液化气加气站。由于液化气具有易燃、易爆性和加气站站址面积受城市规划空间的限制,为满足规范中距离的要求和安全的需要,液化气储罐均埋设在地下。
Introduction With the rapid development of economy and modernization in our country, environmental protection has become an increasingly important issue for the public. Many large and medium-sized cities have begun to implement the “clean air” operation of liquefied petroleum gas instead of gasoline as vehicle fuel to reduce air pollution. Bus buses and taxis using clean fuels such as liquefied gas and natural gas operate in urban trunk roads and civic centers. The nitrogen oxides and heavy metals in urban air are significantly reduced, and the air quality is significantly improved, which is well received by the urban residents , In order to ensure the normal operation of clean fuel vehicles, a considerable amount of LPG filling stations must be installed in the cities. Because liquefied gas is flammable and explosive, and the site area of filling stations is limited by the urban planning space, liquefied gas storage tanks are buried underground to meet the requirements of the medium-distance and safety requirements.