SU1244293A1 - Apparatus for measuring the travel of running end of block rope - Google Patents

Description

The invention relates to a technique for monitoring a drilling process in the petroleum industry, in particular to devices for measuring the penetration of a drilling tool, and can also be used to measure movements and speeds of movement in various devices containing steel ropes.

The purpose of the invention is to improve the measurement accuracy.

FIG. 1 shows a functional diagram of the device; in fig. 2: - section A-A in FIG. one.

The device is installed on the penultimate string of the rope rope from the winch of the pulley system, since there is less vibration of the rope. The device is mounted on a special bracket at the bottom of the bracket roller with a predetermined clearance above the traveling cable 1. The device contains a primary transducer including a magnetic circuit 2, at one end of which a magnetic flux exciter is installed, for example a magnet 3, and two sensitive elements made in the form of with the possibility of longitudinal movement along the magnetic circuit of ferromagnetic bodies 4 with galvanomagnetic transducers 5, and the lining 6 protecting the converters from mechanical damage. The distance between the bodies of the sensing elements is such that

5 5

0

from the galvanomagnetic converters were located above the top of the strand rope, and the other - above the central part of the depression between the straps of the talan rope.

Galvanomagnetic transducers are connected via switch 7, which serves to turn off transducers during tripping and instrument buildup, to recording equipment containing input equipment 8 connected in series, coincidence unit 9, counting unit 10, reversible counter 11 and electromagnetic counter 12.

The device works as follows.

When the traveling rope 1 moves, the size of the air gap between the strands of the rope and the galvanomagnetic converters 5 alternately changes, which leads to a change in the magnitude of the magnetic flux penetrating one or another galvanomagnetic converter and, consequently, a different value and sequence of electrical signals arriving at an input device 8, a coincidence unit 9, a counting unit 10, a reversible counter 11 and an electromagnetic counter 12.

The more power lines will penetrate one or another sensitive element, the greater will be the value of its electrical signal.

FIG. 2

Compiled by I. Nazarkina Tehred I. VeresKorrektor I. Erdeyi

Circulation 548 Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Branch PPP "Patent, Uzhgorod, st. Project, 4

Editor L. Veselovska Order 3788/33

Claims (1)

DEVICE FOR MEASURING THE MOVEMENTS OF THE CHAIN ROPE OF THE TOW ROPE, containing a primary transducer installed with a predetermined clearance above the tackle rope and including a magnetic circuit with a magnetic flux exciter and two sensitive elements connected to recording equipment, characterized in that, in order to increase the accuracy of measurements, sensitive elements made in the form of installed with the possibility of longitudinal movement along the magnetic circuit of ferromagnetic housings with galvanomagnetic converters fir trees, one of which is located above the top of the strand of the hoist rope, and the other above the central part of the hollow between the strands of the hoist rope. fie. 1 Yu yo to co A