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发明公开
CN105822250A 剪切闸板防喷器 无效 - 撤回

剪切闸板防喷器
摘要：
本发明提供一种剪切闸板防喷器，包括：上剪切闸板、下剪切闸板和剪切密封条，所述上剪切闸板的刀口平面上设有密封槽，所述剪切密封条放置在所述密封槽内，所述剪切密封条与所述密封槽的底部之间设有预留距离，本发明提供的一种剪切闸板防喷器，下剪切闸板刃口运动到与上剪切闸板底部的剪切密封条接触的位置进行密封时，上剪切闸板和下剪切闸板同时移动挤压剪切密封条，由于剪切密封条与密封槽的底部之间设有预留距离，使得剪切密封条在受到挤压时有一定的退让空间，减小了下剪切闸板对剪切密封条进行挤压时剪切密封条受到的作用力，从而可以保护剪切密封条不被下剪切闸板刃口损坏，延长使用寿命。
摘要（英）：

The invention provides a cutter ram blowout preventer. The cutter ram blowout preventer comprises an upper cutter ram, a lower cutter ram and a cutting sealing strip, wherein a sealing groove is formed in a knife edge plane of the upper cutter ram; the cutting sealing strip is placed in the sealing groove; a reserved distance is formed between the cutting sealing strip and the bottom of the sealing groove. According to the cutter ram blowout preventer provided by the invention, when a cutting edge of the lower cutter ram moves to the position in contact with a cutting sealing strip at the bottom of the upper cutter ram to be used for sealing, the upper cutter ram and the lower cutter ram move at the same time to extrude the cutting sealing strip; the reserved distance is formed between the cutting sealing strip and the bottom of the sealing groove, so that the cutting sealing strip has certain concession space while being extruded, the acting force borne by the cutting sealing strip is reduced when the lower cutter ram is used for extruding the cutting sealing strip, the cutting sealing strip is protected from being damaged by the cutting edge of the lower cutter ram, and the service life of the cutting sealing strip is prolonged.

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