Deep sea mining lifting pipe heaving compensation system and compensation method

A technology of heave compensation and deep-sea mining, applied in drill pipe, casing, earthwork drilling, etc., can solve problems such as the safety of mining operations affecting the service life of the mining pipe, and achieve the effect of reducing amplitude and suppressing longitudinal vibration.

Inactive Publication Date: 2020-06-05
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

When the mining ship is working on the sea surface, it will undergo heave motion due to the action of sea waves, and the mining ship will drive the hoisting pipeline hinged at the lower end to move together, which will induce longitudinal vibration of the ore lifting subsystem, and the longitudinal vibration of the hoisting

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  • Deep sea mining lifting pipe heaving compensation system and compensation method
  • Deep sea mining lifting pipe heaving compensation system and compensation method

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[0019] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention, that is, the described embodiments are only some of the embodiments of the present invention, but not all of the embodiments.

[0020] figure 1 It is a schematic diagram of the depth compensation system of the hoisting pipe in deep sea mining, which is mainly composed of a mining ship 1, a dynamic wave detection module, an industrial control module, a hydraulic compensation control module 5, a heave compensation device and a hoisting pipe 12.

[0021] The mining ship 1 is hinged to the upper support plate 9 of the heave compensation device, the cylinder bodies of the two hydraulic compensation cylinders of th...

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Abstract

The invention discloses a deep sea mining lifting pipe heaving compensation system and a compensation method. The deep sea mining lifting pipe heaving compensation system comprises a mining ship, a dynamic wave detection module, an industrial control module, a hydraulic compensation control module, a heaving compensation device and a lifting pipe. The hydraulic compensation control module can realize active compensation and passive compensation, different compensation methods can be chosen according to different sea conditions, separate designing is carried out for the two compensation methods, the compensation methods are integrated in a same hydraulic system, two kinds of hydraulic compensation system bodies can work alone without disturbing each other, the longitudinal vibration of thelifting pipe is effectively inhibited, and the amplitude of the longitudinal vibration is reduced.

Description

technical field [0001] The invention relates to a heave compensation system for a mining hoisting pipe, in particular to a heave compensation system and a compensation method for a mining hoisting pipe in deep sea mining. Background technique [0002] In order to excavate the mineral resources of the seabed, human beings have proposed many mining schemes, but the most commonly used one is the mining machine plus pipeline lifting system. The mining system scheme is mainly composed of a surface support system based on mining ships, an ore lifting subsystem based on ore lifting hard pipes, and an ore collecting subsystem based on seabed ore collecting machines. A slender ore-lifting hard pipe is used to connect the seabed ore collector to the mining ship on the sea surface, so that the polymetallic nodules collected by the ore collector can be pumped to the mining ship. When the mining ship is working on the sea surface, it will undergo heave motion due to the action of sea wa...

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Application Information

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IPC IPC(8): E21B19/00
CPCE21B19/006
Inventor 肖林京范芳超陆继铭左帅
Owner SHANDONG UNIV OF SCI & TECH
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