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Variable rope tethered double cylinder winch hoisting system and transformation method for tethering rope

A lifting system and double-drum technology, applied in portable lifting devices, clockwork mechanisms, hoisting devices, etc., can solve the problems of low efficiency and heavy manual operation workload, and achieve high safety performance, ingenious structural design, and structural Design novel effects

Active Publication Date: 2017-06-09
LANZHOU LS PETROLEUM EQUIP ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a double-drum winch hoisting system with variable ropes and a rope changing method, which can quickly and automatically realize the changing of the ropes of the lifting system, so as to improve the lifting efficiency and equipment redundancy, and solve the problem of manual operation. The problem of large volume and low efficiency

Method used

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  • Variable rope tethered double cylinder winch hoisting system and transformation method for tethering rope
  • Variable rope tethered double cylinder winch hoisting system and transformation method for tethering rope
  • Variable rope tethered double cylinder winch hoisting system and transformation method for tethering rope

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as Figure 5 As shown, a double-drum winch hoisting system with variable ropes 12 ropes conversion method, the movable pulley block composed of eight single pulley blocks 4 is coordinated by the upper locking device 1 and the lower hook locking device 2 , the two single-pulley traveling carriages 4 that are controlled in the center are fixed at the bottom of the upper locking device 1 to become movable pulleys, and the rope system of the hoisting system is transformed, and the specific process is as follows:

[0043] Step 1. Under the action of the double-drum winch 23, all the single-pulley tourist cars 4 move upward synchronously and work together to lift the tourist car bracket 18 and the top drive 19. Except for the two outermost single-pulley tourist cars 4, other single-pulley tourist cars 4 The traveling blocks 4 are all in contact with the upper locking device 1, and the bottom end of the second cylinder 10 is in contact with the top of the guide rod 16 ins...

Embodiment 2

[0048] Such as Figure 6 As shown, a double-drum winch hoisting system with variable ropes 8 ropes conversion method, the movable pulley traveling block composed of eight single pulley traveling blocks 4 cooperates with the upper locking device 1 and the lower hook locking device 2 , control the centered four single-pulley traveling carriages 4 and fix their positions at the bottom of the upper locking device 1 to become movable pulleys for the rope transformation of the hoisting system. The specific process is as follows:

[0049] Step 1. Under the action of the double-drum winch 23, all the single-pulley tourist cars 4 move upward synchronously and work together to lift the tourist car bracket 18 and the top drive 19. Except for the two outermost single-pulley tourist cars 4, other single-pulley tourist cars 4 The traveling blocks 4 are all in contact with the upper locking device 1, and the bottom end of the second cylinder 10 is in contact with the top of the guide rod 16 ...

Embodiment 3

[0054] Such as Figure 7 As shown, a double-drum winch hoisting system 4 rope change method with variable ropes, the movable pulley block composed of eight single pulley blocks 4 cooperates with the upper locking device 1 and the lower hook locking device 2 , control the centered six single-pulley traveling carriages 4 and fix their positions at the bottom of the upper locking device 1 to become movable pulleys for the rope transformation of the hoisting system. The specific process is as follows:

[0055] Step 1. Under the action of the double-drum winch 23, all the single-pulley tourist cars 4 move upward synchronously and work together to lift the tourist car bracket 18 and the top drive 19. Except for the two outermost single-pulley tourist cars 4, other single-pulley tourist cars 4 The traveling blocks 4 are all in contact with the upper locking device 1, and the bottom end of the second cylinder 10 is in contact with the top of the guide rod 16 installed inside the corre...

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Abstract

The invention discloses a variable rope tethered double cylinder winch hoisting system and a transformation method for tethering rope. The variable rope tethered double cylinder winch hoisting system comprises a crown block frame installed on the top of a derrick, runner wagons groups with travelling block and winch are made up of several runner wagons with single pulley, steel wire rope and double drum winch. A head block assembly and a leading pulley are installed on the up of the crown block frame, and the bottom of the crown block frame is provided with an upper locking device. The underneath locking device is installed on the inner of the runner wagon with single pulley. Runner wagons with single pulley of the runner wagons groups with travelling block are paired to symmetry from the inside out and disengaged with the support of the runner wagon, and are fixed on the bottom of the underneath locking device,thereby forming a fixed pulley. And the outermost of two runner wagons with single pulley are always fixed on the support of the runner wagon to be travelling block, thereby the transformation of 12-rope tethered, 8-rope tethered and 4-rope tethered system of lifting system can be realized. The variable rope tethered double cylinder winch hoisting system and transformation method for tethering rope have the advantages that the structure is designed to be science and practical, the transformation of the rope tethered of the lifting system can be automatically realized, the working efficiency and equipment redundancy are improved, time and effort are saved, the center of gravity of the drilling equipment is reduced and the stability of the derrick of the well drilling is improved.

Description

technical field [0001] The invention relates to the technical field of oil drilling equipment, in particular to a rope changing device for the swimming system of a drilling rig. Background technique [0002] The semi-submersible drilling platform is a sharp tool for the exploration and development of deep-sea oil and gas resources, and a large number of new technologies are embodied on the semi-submersible platform. As far as the drilling rig hoisting system is concerned, the hoisting system on the semi-submersible drilling platform that is more common today is similar to the conventional hoisting system, including drawworks, swimming system and derrick. The rope system in the hoisting system is constant, the efficiency is constant, and the equipment redundancy is low. ;Because the heave of the semi-submersible platform is affected by wind, wave and current, in order to ensure the normal drilling operation, the heave compensation device has become a standard configuration on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B66D1/26B66D1/28B66D1/60B66D3/06
CPCB66D1/26B66D1/28B66D1/60B66D3/06B66D2700/0166B66D2700/0183B66D2700/028
Inventor 宋超魏双会张建孙占广王丽君孟德超顾利朝
Owner LANZHOU LS PETROLEUM EQUIP ENG CO LTD
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