| abstract |
The utility model provides a blowout preventer for holing gush sand and emit water, contains drill way pipe, lubricator and ball valve, the drill way pipe contains hollow drill way body, the one end of drill way body is equipped with drill way pipe flange, and the other end is equipped with the fish scale and detains, the downside of drill way body is provided with a little gate valve, the lubricator contains the hollow lubricator body and is located the lubricator flange at lubricator body both ends, and the lubricator flange joint of flange, the other end is managed to the lubricator flange of one end to the drill way through circumferential a plurality of bolted connection the ball valve, the ball valve contains ball valve body and ball valve flange, therefore, the utility model discloses appear greatly when gushing water and emitting water, freeze the pipe need not cutting off or extract, just can eliminate and gush sand and emit water to endanger, can quick effectual solve the problem, avoided freezing the pipe and caused droing of drill way pipe when extracting easily, reduced subsiding of tunnel and ground, reduced the loss of engineering to the extensive suitability of freezing the method has been promoted. |