Large-drift-diameter high-pressure movable elbow

Abstract

The invention discloses a large-drift-diameter high-pressure movable elbow. The large-drift-diameter high-pressure movable elbow comprises a connecting short pipe; the connecting short pipe is connected with one end of a bent pipe through a connecting sleeve; the other end of the bent pipe is connected with a straight pipe; the inner diameters of the two ends of the straight pipe are different; the big end part of the straight pipe is arranged on the bent pipe in a sleeving mode; an upper flange and a bearing sleeve are sequentially arranged in the positions, close to the big end part of the straight pipe, on the outer wall of the bent pipe in a sleeving mode; a bearing I is arranged between the upper flange and the bearing sleeve; a lower flange and a bearing II are sequentially arrangedon the outer wall of the big end part of the straight pipe in a sleeving mode; and the bearing II is positioned between the straight pipe and the bearing sleeve; and the upper flange is connected withthe lower flange through bolts. as the two ends of the high-pressure movable elbow are movably connected, all-directional direction adjustment can be achieved, disassembling and assembling are convenient and fast, the operation efficiency is enhanced, the labor intensity of personnel is reduced, the high-pressure movable elbow is suitable for large drift diameters, the drift diameters can reach 5inches or above, high pressure resistance is achieved, and the rated working pressure can reach 15,000 PSI.

Description

technical field [0001] The invention belongs to the technical field of fracturing equipment, and in particular relates to a large-diameter high-pressure swivel elbow. Background technique [0002] With the gradual expansion of fracturing construction scale, the fracturing construction of cluster wells is gradually increasing, and in the process of zipper fracturing operation of cluster wells, due to the limitation of the operation well site and the requirements of construction scale, it is necessary to use multiple 3-inch Or 4-inch fracturing pipelines are connected in parallel to meet the requirements of on-site operations. The demand for high-pressure manifolds is large, the connection is complicated, and the floor area is large. The complicated pipeline layout slows down the construction period and brings more pipeline thorns. leakage risk. Therefore, it is necessary to develop a large-diameter single-channel high-pressure pipeline of 5 inches or more to simplify the pip...

AI Technical Summary

Problems solved by technology

The large-diameter high-pressure swivel elbow is the core component of the large-diameter single-channel high-pressure pipeline. It is difficult to develop. The inner diameter of the existing steel ball swivel swivel elbow can only be 4 inches. With the increase of the inner diameter, the number of steel balls is more , which is not conducive to installation and disassembly. When the swivel elbow is under high pressure, the steel ball is easily damaged by shearing without any buffer protection under high pressure.

In addition, the steel ball type rotating swivel elbow above 4 inches has large rotational friction resistance, difficult rotation, and difficult installation and construction.

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