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车用压缩天然气（ＣＮＧ）加气站分慢加气和快加气两种类型，前者不需要设置加压气体储存设施，而后者则需要设置储存压力为２５ＭＰａ的ＣＮＧ储气库。目前，国内、外的快加气站都采用储气瓶组或储气罐地上储气方式。但近年来我国四川地区接连发生的８起９只“站用瓶”和“车用瓶”爆破事故，使有些人对地上储存方式的安全性产生了怀疑，而采取了打储气井进行地下储气的方法。文章详细说明了在什么情况下需要设置ＣＮＧ储气设施，以及为什么要在有条件的地方尽可能采用慢加气方式的道理；还从安全性和经济性出发，对地上容器储气和储气井地下储气进行分析对比，说明了地上容器储气是安全、可靠、经济的，并且安装使用也都很方便。储气井地下储气无法实施检漏、维修，不能移动搬迁，经济性又很差，因而在ＣＮＧ快加气站上打储气井进行地下储气是没有必要的。

HIGH PRESSURE GAS STORAGE AT THE FILLING STATION OF VEHICLE COMPRESSED NATURAL GAS

??The filling station of vehicle compressed natural gas (CNG) may be divided into two types of slow gas filling and quick gas filling.The former needs not to set up any pressurized gas storage equipment, but the latter needs to set up a CNG storage depot with a storage pressure of 25 MPa.At present, the domestic and foreign quick filling stations are all built on the earth surface through adopting a group of gas storage cylinders or gas storage tank. However, the explosion accidents, successively caused by five "station cylinders" and four "vehicle cylinders" in Sichuan in recent years have made some people be in doubt about the surface storage method and adopt underground storage method by drilling gas storage wells.In this paper, the conditions being in need of setting up the CNG storage equipments and the reasons of why the slow gas filling method should be adopted wherever possible are stated in detail, and in consideration of the safety and economization, the analysis and contrast between the surface receiver storage and the underground storage by gas storage wells are carried out, which indicates that the former is safe, reliable and economic, being quite convenient to install and apply.Because the leak detection and maintenance cannot be carried out for the under ground storage by gas storage wells, it cannot be moved and its economic benefit is bad, it is not necessary to drill the gas storage wells for the underground storage at the quick CNG filling station.