A hydraulic clutch of a double rotary joint fracturing pump

Abstract

A hydraulic clutch for a fracturing pump with double rotary joints, including a first rotary joint, hydraulic oil first enters the first rotary joint, flows through the internal oil passage and sealing joint of the fracturing pump shaft, reaches the hose assembly, and then passes through the second rotary joint The joint and the oil distribution plate reach the inside of the oil cylinder piston, push the piston, and complete the engagement of the clutch. At this time, all parts rotate together with the shaft end of the motor. On the contrary, under the action of the spring of the clutch core itself after the pressure is released, the hydraulic oil flows out through the oil seal, the oil distribution plate and the second rotary joint, flows through the hose assembly, the sealing joint, and finally flows out through the first rotary joint. At the same time, the rotation of the oil pipe assembly is cut off by the second rotary joint, and the clutch is separated. At this time, the clutch core rotates with the motor shaft, and the ring gear, coupling, fracturing pump shaft and oil pipe assembly stop rotating. Control the hydraulic oil to come in from the driven side, and control the clutch on the driving side to disengage and engage. It is used in occasions where the driving side cannot enter oil, such as fracturing skids.

Description

technical field [0001] The invention relates to the technical field of hydraulic clutches for fracturing pumps, in particular to a hydraulic clutch for fracturing pumps with double rotary joints. Background technique [0002] As a new oil equipment, the fracturing skid is applied in the field of shale gas. It is composed of two fracturing pumps and a main motor. The main motor has two outputs on the left and right, and each output is connected to a fracturing pump. In order to separately control the work of the two fracturing pumps, a hydraulic clutch is provided between the motor and the fracturing pumps to start and stop the fracturing pumps. The left and right sides of the motor shaft of the main motor of the fracturing sled need to be connected to the hydraulic clutch. The end faces of both sides of the motor shaft are covered by the hydraulic clutch. The rotary joint cannot be installed to feed oil, and the clutch cannot be separated and engaged. Oil is fed from the dr...

AI Technical Summary

Problems solved by technology

The left and right sides of the motor shaft of the main motor of the fracturing sled need to be connected to the hydraulic clutch. The end faces of both sides of the motor shaft are covered by the hydraulic clutch. The rotary joint cannot be installed to feed oil, and the clutch cannot be separated and engaged. Oil is fed from the driven end of the fracturing pump; at the same time, considering that the fracturing skid is hard-connected to the fracturing pump shaft and the motor shaft through a clutch, when the fracturing pump is running, the fracturing pump shaft itself will perform telescopic movement according to its own requirements. And produce axial force, this telescopic and axial force will accelerate the wear of key parts such as gears and bearings of the whole mechanism, reduce the service life of the motor and fracturing pump, and also damage the seals of the control oil circuit, resulting in Frequent oil spills affect production

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