Ball socket joint used in deep sea resource exploiting system mine throwing subsystem

Abstract

A ball hinged joint consists of an ore-raising pipe, a bolt, a nut, a washer, a clasp, an external ball sleeve, a ball head, a lower joint pipe end connecting piece and an upper joint ball end connecting piece. Two half-round clasps is used for integrating the joint of the ore-raising pipe with the connecting piece of the upper joint end by four set of bolts. The upper joint end connecting piece is connected with the external ball sleeve via screw threads and the ball head is connected with the lower joint end connecting piece by using a threaded connection. The ball head and the external ball sleeve can be in a relative motion to ensure that the joint has three rotating free degrees.

Description

technical field [0001] The invention belongs to the field of mechanical manufacturing, and relates to a pipe joint used in an ore lifting sub-system of a deep-sea resource mining system. The joint is a ball joint. Background technique [0002] The hydraulic lifting mining system combined with the mining machine and the lifting pipeline is the most promising first-generation commercial mining system in the 21st century. In this system, the connection mode and device between the hoisting pipelines are very important, and it is one of the technical keys that need to be solved. [0003] The ore lifting pipe moves with the mining ship at a certain speed within a certain period of time. The lower end of the ore lifting pipe is almost a free end, and the operation mode is mobile. The hoisting pipe joint not only bears the total load of the mining system, but also provides a bearing surface for deployment and recovery operations. There are mainly two design methods for the design ...

AI Technical Summary

Problems solved by technology

[0007] Although they have the above advantages, generally speaking, they all have a disadvantage, that is, these joints are rigidly connected, which is not suitable for the working requirements of deep sea mining, because in the working conditions of the seabed, there are liquids generated by waves and currents. The power, as well as the hydraulic power generated when the mining ship is towed, will have a large bending moment when it is transmitted to the joint through the lifting pipe

This will cause unnecessary deformation and affect the transmission of slurry, and even failure and damage will occur in severe cases. The negative impact will become more prominent when the operating water depth exceeds 5,000 meters. It is necessary to use new joints to prevent excessive bending deformation and other equipment in the pipeline system. damage

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