An umbrella-shaped self-starting pile pipe packer for marine engineering

Abstract

The invention discloses an umbrella-shaped self-starting marine engineering pile pipe packer, which comprises a hollow connection and fixed casing inside, and a plurality of sealing support plates are installed around the inner wall of the connection and fixed casing through hinges, and is fixed around the inner wall of the connection and fixed casing. A sealing layer is provided. The sealing layer extends to the surface of the sealing support plate through the upper part of the hinge. The sealing layer is fixed to the surface of the sealing support plate. A cylindrical travel switch is erected at the center of the bushing, and the sealing support plate is pressed vertically around the travel switch. Compared with the prior art, the present invention has the following advantages: the polyurethane layer does not have any damage, the pile pipe does not have any impact damage and damage to the packer, it is automatically opened, safe and reliable, no external control operation is required, no external influence, elastic adjustment , to ensure that the sealing support plate is always close to the outer wall of the pile pipe, and the sealing is firm and reliable.

Description

technical field [0001] The invention relates to an offshore oil extraction operation device, in particular to an umbrella-shaped self-starting pile pipe packer for marine engineering. Background technique [0002] Pile tube packers are widely used in engineering fields with harsh environments such as offshore oil production platforms and wind power platforms. The existing domestic and foreign technical solutions all use annular hollow bottle plug type pile tube packers. This traditional packer structure It is: the outermost layer is a circular steel ring, the outer circle is welded on the inner wall of the jacket casing, the inner layer of the steel ring is cast and fixed with polyurethane with a central hole diameter, and the inner diameter of the central hole is slightly smaller than the outer diameter of the pile tube. The inner hole of the packer is an interference fit. [0003] The currently used packer has the following disadvantages: 1. The polyurethane layer is easi...

AI Technical Summary

Problems solved by technology

[0003] The currently used packers have the following disadvantages: 1. The polyurethane layer is easily ignited or damaged by high temperature when the packer is fixed by welding

2. During the pile driving process, the polyurethane layer will inevitably be damaged by friction or the polyurethane layer will fall off under the action of the strong vibration force and impact force of the pile tube, which seriously affects the sealing effect and causes quality accidents

[0004] The reason for the disadvantages: the overall installation and welding of the packer is easy to damage the polyurethane layer, and the gap between the center hole of the packer and the pile pipe is small, which causes the polyurethane sealing body to be damaged when the pile pipe impacts and vibrates downward

Images