Conjugation rotary sealing valve capable of generating pulse jet flow

• Main Authors: LI HONG, BI WENXIN, WANG HAIGE, ZHANG FUCHENG, GE YUNHUA, ZHUO LUBIN, CHAI YONGJIN, CUI LONGLIAN
• Format: Patent
• Language: English
• Published: 02.12.2015
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

The embodiments of the invention provide a conjugation rotary sealing valve capable of generating a pulse jet flow. The conjugation rotary sealing valve comprises an outer shell which internally has a structure that a first end of a power input shaft is connected with a power output shaft of a turbine; a torque transmission key is connected to the second end of the power input shaft and a first end of a central shaft; a connection cylinder sleeves a junction part of the power input shaft and the central shaft; an elastic medium is placed in a circular hole above a key groove in the second end of the power input shaft; a first end of an eccentric shaft is fixedly connected to the second end of the central shaft; a sealing valve block is fixedly connected to a second end of the eccentric shaft; a sealing valve plate is mounted on a step surface between two adjacent through holes under the second end of the eccentric shaft; a limit slot and a pulse flow channel are formed in the sealing valve plate. When the displacement of a floor slurry pump is greater than the preset displacement, the pulse flow channel is periodically opened or sealed, so that the pulse jet flow is generated; and when the displacement of the floor slurry pump is smaller than the preset displacement, the sealing valve block is limited in the limit slot.