Throwing-pulling type cable-free pressure-controlled adjustable jet pump

• Main Authors: MAO QINGKAI, CHEN WEIYU, ZHAN MIN, SHEN QIONG, ZHANG CHENGFU, WANG HONG, LI ANG, REN JIANHAO, ZHENG CHUNFENG, CHENG XINPING, WANG YAO, GUO PEIWEN, ZHAO JINGHUI
• Format: Patent
• Language: Chinese; English
• Published: 12.05.2023
• Subjects: BLASTING; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BYUSING INERTIA OF FLUID TO BE PUMPED; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; SIPHONS; WEAPONS

The invention provides a throwing-fishing type cable-free pressure-controlled adjustable jet pump, which belongs to the technical field of jet pumps, and comprises an upper cable-free adjustable system and a lower jet lifting system, the upper cable-free adjustable system is connected with the lower jet lifting system through an intermediate connector, and the lower jet lifting system is connected with the intermediate connector through a hydraulic cylinder. The upper cable-free adjustable system is used for controlling the reciprocating motion stroke of a spray needle in the lower jet flow lifting system, and it is guaranteed that the flow intercepting area of a nozzle in the lower jet flow lifting system is effectively controlled. According to the invention, the area ratio change of the jet pump nozzle and the throat pipe can be realized only by regulating and controlling the performance of the jet pump through the power liquid displacement on the ground, so that the characteristic curve of the jet pump is