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1. (WO2017215208) MONITORING APPARATUS AND METHOD FOR DYNAMIC CONTACT STATE OF MULTI-LAYER WOUND WIRE ROPE AND DRUM IN ULTRA-DEEP WELL

Pub. No.:    WO/2017/215208    International Application No.:    PCT/CN2016/108882
Publication Date: Fri Dec 22 00:59:59 CET 2017 International Filing Date: Thu Dec 08 00:59:59 CET 2016
IPC: B66D 1/28
B66D 1/54
B66D 1/60
G01N 3/08
Applicants: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
中国矿业大学
Inventors: WANG, Dagang
王大刚
WANG, Xiangru
王祥如
HOU, Mengfan
侯梦凡
CHAO, Chubei
晁储贝
Title: MONITORING APPARATUS AND METHOD FOR DYNAMIC CONTACT STATE OF MULTI-LAYER WOUND WIRE ROPE AND DRUM IN ULTRA-DEEP WELL
Abstract:
A monitoring apparatus and method for dynamic contact state of a multi-layer wound wire rope and a drum in an ultra-deep well, the monitoring apparatus comprising a support system, a winding system, a dynamic loading monitoring system, and a stress monitoring system. The winding system comprises an electric motor (10), the electric motor being connected with a main shaft (18) through a speed reducer (12), the main shaft (18) having a flange plate arranged thereon, the flange plate fixed with a double-fold-line drum (16) being sleeved on the main shaft (18), friction discs (15, 17) being fixed at two sides of the double-fold-line drum (16), disc brakes (2, 3, 20, 21) being fixed at one side of the friction discs (15, 17), and at least two layers of a wire rope (4) being wound on a rope groove of the double-fold-line drum (16); the dynamic loading monitoring system comprises a servo electric cylinder (8), a threaded rod of the servo electric cylinder (8) being connected with a wire rope clamp (6) via a S-shaped tension sensor (7), and one end of the wire rope (4) passing through the wire rope clamp (6) and being locked; and the rope groove and a baffle of the double-fold-line drum (16) are provided with U-shaped through grooves (22, 24, 26, 28, 30, 32, 34), strain gages (23, 25, 27, 29, 31, 33, 35) being adhered on inner walls of the U-shaped through grooves (22, 24, 26, 28, 30, 32, 34). The apparatus can monitor the dynamic contact stress of a wire rope on the surface of the double-fold-line drum and on the baffle of the drum in real time.