| 摘要 |
A mechanical type boot including a vertically positioned riser in a tubular configuration with an outwardly flanged upper end and an outwardly flanged lower end. Vertical bolt holes are provided through the ends. Vertical bolt holes are provided in a lower flat end of a base flange. Vertical bolt holes are also provided in a flanged lower end of a generally cylindrical split seal cap ring. Vertically extending bolts couple the riser, seal and base flange. An inverted J-shaped tube constitutes a gas well pipe. The tube has a long vertical section located within and extending upwardly from the split seal cap ring. The next intermediate section extends outwardly. A third outboard section extends downwardly for the exhaust of gasses. The lowermost end of the gas well pipe is held in a fluid type relationship with regard to the split seal cap ring. An intermediate expandable bellows in a vertical orientation has an upper horizontal flange with vertical apertures aligned with the holes in the flanged lower end of the split seal cap ring. Securement bolts are provided between the bellows and split seal cap ring. The lower end of the bellows has a lower horizontal flange and is provided with vertical holes which are aligned with the holes at the upper end of the riser. Coupling bolts extend through the holes in horizontal flange and the holes in the upper end of the riser. The intermediate extent of the bellows is formed with flexible undulations to allow its contraction and expansion.
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