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Water jet sprayer assisting offshore platform in sinking pile

An offshore platform, water jet technology, applied in the direction of sheet pile walls, injection devices, liquid injection devices, etc., can solve the problem of large pile diameter and achieve the effect of reducing resistance

Inactive Publication Date: 2014-01-15
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the construction of pile foundations on offshore platforms, due to the large diameter and length of the pile body, the water jet nozzle is required to have a large impact area and to be able to break the soil with the pile, but the nozzles with existing structures cannot meet the above requirements

Method used

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  • Water jet sprayer assisting offshore platform in sinking pile
  • Water jet sprayer assisting offshore platform in sinking pile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Such as figure 1 As shown, the offshore platform auxiliary pile sinking water jet nozzle includes: a cylinder body, the cylinder body has a hollow cylinder cavity 19, and the upper end of the cylinder body is provided with a water inlet connected to the cylinder cavity 19. The lower end of the cylinder body is provided with a water outlet connected to the cylinder cavity 19; the core tube 8 arranged in the cylinder cavity, the core tube 8 has a hollow core tube cavity 18, and the top of the core tube 8 A non-return valve 5 for selectively blocking the water inlet is provided, and an annular baffle 81 perpendicular to the axial direction of the core pipe 8 is provided on the core pipe 8 below the non-return valve 5 . The annular baffle 81 is provided with a plurality of water passage holes 7, and the tube wall of the core tube 8 located below the annular baffle 81 is provided with a plurality of water passages 9 extending along the axial direction of the core tube 8. In ...

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Abstract

The invention discloses a water jet sprayer assisting an offshore platform in sinking a pile. The water jet sprayer comprises a barrel body with a water inlet and a water outlet, and a core tube arranged in an inner cavity of the barrel body, wherein a hollow core tube inner cavity is formed in the core tube; a plugging member for selectively plugging the water inlet is arranged on the top of the core tube; an annular baffle plate with a plurality of water holes, a plurality of water channels extending along an axial direction of the core tube, a guide impeller with spiral guide blades and a spiral nozzle which is arranged at the bottom of the core tube and provided with a spiral channel are sequentially arranged on the core tube below the plugging member; and an outer ring nozzle is formed between the outer wall of the spiral nozzle and the inner wall of the water outlet of the barrel body. During pile sinking, the water jet sprayer jets high-pressure water at high speed in the form of combined jet flow to scour a soil body in the pile, so that soil blockage in the pile can be removed effectively, the power pile sinking resistance is reduced, the pile sinking efficiency is improved, and aims of shortening the platform construction period and reducing the construction cost are fulfilled.

Description

technical field [0001] The invention relates to the technical field of high-pressure water jet equipment for pile sinking by auxiliary power method in pile foundation construction of offshore platforms, in particular to a water jet nozzle for assisting pile sinking to break soil. Background technique [0002] Water jet assisted pile sinking is a new type of pile sinking technology that uses water jet to break the soil plug formed in the pile during the process of dynamic pile sinking, thereby reducing the resistance of pile sinking and improving the efficiency of pile sinking. In the water jet assisted pile sinking system, the water jet nozzle is the generating element of the jet and also the key in the system. Its function not only converts the static pressure provided by the high pressure pump into the dynamic pressure of water, but also determines the flow characteristics of the water jet. and dynamic performance. [0003] At present, high-pressure water jet technology h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D13/08B05B7/08B05B7/12
Inventor 朱丽红王瑞和倪红坚周卫东邹德永张卫东周名芳黄勇陈新勇邢永超
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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