The principle of gas leakage from bell socket of cast-iron pipe after conversion from manufactured gas to natural gas is analyzed . Four solutions including pipe replacement PE pipe insertion joint repair and gas humidification are introduced and the techno-economic comparison of these solutions is made .

分析了天然气置换人工煤气后铸铁管道 承 插 接口漏气原理，介绍了4种解决方案：管道更换、PE管内衬、接口修补及燃气加湿，对其进行了技术经济比较。

The Study of Bell Socket and Electrode of Solid Electrolyte Hydrogen Sensor

固体电解质测氢传感器的 套 接 密封及电极研究

It 's structure must be air tightness no water percolation and no air leakage . Countermeasures against Gas Leakage from Bell Socket of Cast-iron Pipe after Natural Gas Conversion

结构要求密闭，不渗水、不漏气。天然气置换后铸铁管 承 插 接口漏气对策