A blowout preventer

Abstract

The utility model discloses a drilling blowout preventer, including slag water gas interface cover, slag water gas drainage cover, water and slag container, slag water gas drainage pipe and high negative pressure pipe, slag water gas interface cover is used for covering the orifice of drilling, and the guide rail between slag water gas interface cover and drilling machine is connected to slag water gas drainage cover, and the drill rod of drilling machine drills into the drilling after passing through slag water gas drainage cover and slag water gas interface cover in proper order, and the end of slag water gas drainage cover close to drilling and drill rod are equipped with dynamic seal, the bottom of water and slag container is equipped with slag discharge port, and the circular cavity of slag discharge port is installed with slag discharge wheel, and the slag water gas drainage pipe is connected between slag water gas drainage cover and water and slag container, and one end of high negative pressure pipe is connected to water and slag container, and the other end is connected with high negative pressure gas extraction pipe. The utility model can place the affected side arm in the retraction and fix on the chest, and the affected side trunk is not more than, is favorable to operation, has increased the patient's comfort feeling, has increased the chest restraint band simultaneously, and the safety of patient is guaranteed.

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