KR20150009633A

KR20150009633A - Wire rope condition sensing system for winch

Info

Publication number: KR20150009633A
Application number: KR20130083274A
Authority: KR
Inventors: 천경술
Original assignee: 현대중공업 주식회사
Priority date: 2013-07-16
Filing date: 2013-07-16
Publication date: 2015-01-27

Abstract

The present invention relates to a wire rope state detection system for a winch, comprising: a first proximity sensor for detecting rotation of a wire drum; A second proximity sensor for detecting the rotation of the wire drum at a position spaced apart from the first proximity sensor; A length calculating unit for calculating a feed length of the wire rope according to the detection value of each of the proximity sensors; A tension sensor for sensing a tension of the wire rope; And a controller for sensing and outputting the transporting length and tension of the wire rope. Thus, the length of the wire rope wound or unwound on the winch can be accurately measured with a simple structure using the proximity sensor.

Description

[0001] WIRE ROPE CONDITION SENSING SYSTEM FOR WINCH [0002]

The present invention relates to a wire rope state detection system for a winch, and more particularly, to a wire rope state detection system for a winch that accurately measures the length of a wire rope wound or unwound on a winch with a simple configuration using a proximity sensor .

In general, natural gas or crude oil from the seabed is transported via subsea pipelines to landfill, marine platform or floating storage facility (SPM or CALM Buoy).

Thus, subsea pipelines are formed to connect to terrestrial finishing facilities, marine platforms or floating storage facilities, the length of which varies from tens to hundreds of lengths.

The submarine pipeline is composed of several tens to several tens of thousands of unit pipes of approximately 12 m in length, and each unit pipe is sequentially welded and extended on the barge.

For example, in a conventional method for installing a submarine pipeline, a relatively short length pipe manufactured on the land is moved to the sea using a sea operation line (laying line, laying line), welded to a short length pipe, The lay barge method is a typical method in which the pipeline is submerged while moving the line.

When pipelines are installed using the operation lines moored in the sea, the work lines must be accurately moved to the planned pipeline installation route, and the ship or facilities must maintain the balance during operation.

The most important equipment for fixing the position is an anchoring winch system. In general, the tension of the wire rope connected to the drum of the winch is adjusted to cope with various position changes of the sea. That is, the tension of the wire rope is controlled so that the tension applied to the rope can be adjusted by pulling or pulling the rope by using a winch.

Therefore, in order to precisely adjust the tension of the wire rope, a system capable of clearly detecting the feeding direction and distance of the wire rope and the tension of the current wire rope is required.

Korean Patent Laid-Open No. 10-2012-0118729: Marine Anchoring Winch System and Its Operation Method

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made in view of the above problems, and it is a technical object of the present invention to provide a wire rope state detection system for a winch that accurately measures the length of a wire rope wound or unwound by a winch .

According to an aspect of the present invention, there is provided a method of manufacturing a semiconductor device, including: a first proximity sensor for detecting rotation of a wire drum; A second proximity sensor for detecting the rotation of the wire drum at a position spaced apart from the first proximity sensor; A length calculating unit for calculating a feed length of the wire rope according to the detection value of each of the proximity sensors; A tension sensor for sensing a tension of the wire rope; And a control unit for sensing a conveying length and a tension of the wire rope and outputting the wire rope.

The first proximity sensor and the second proximity sensor may detect the rotation of the wire drum by sensing a metal patch attached to the wire drum and rotating together with the wire drum.

The length calculating unit may determine the feeding direction of the wire rope according to the sensed values of the first proximity sensor and the second proximity sensor.

The tension sensor may be mounted on a guide member for guiding the wire rope to be conveyed to sense a load applied to the wire rope.

As described above, the wire rope state detection system of the winch of the present invention can accurately measure the length of a wire rope wound or unwound on a winch with a simple configuration using a proximity sensor.

Fig. 1 is a schematic view showing the operation steps of installing the submarine pipeline.
2 is a conceptual diagram of operation of a wire rope state detection system for a winch according to an embodiment of the present invention.
3 is a control block diagram of a wire rope state detection system for a winch according to an embodiment of the present invention.
4 is a control flow chart of a wire rope state detection system of a winch according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description with reference to the accompanying drawings, the same or corresponding components will be denoted by the same reference numerals, and redundant description thereof will be omitted.

Fig. 1 is a conceptual view showing an operation of installing a submarine pipeline.

As shown in FIG. 1, the maritime work line 1 is fixed at one point of the work area to weld the pipe line, welds the pipe of a short length to weld the pipe P, and at the same time, 1) is moved while the pipe (P) is submerged.

An anchoring winch system for fixing the position is provided in the maritime work line 1 to cope with various position changes of the sea by adjusting the tension of the wire rope.

2 is a conceptual diagram illustrating the operation of the wire rope state detection system of the winch according to the embodiment of the present invention.

The wire rope state detection system of a winch according to an embodiment of the present invention includes means for sensing a conveyed length of a wire rope and means for sensing a tension of the wire rope.

The means for detecting the conveying length of the wire rope includes at least two metal patches 30a, 30b, 30c, 30d (see FIG. 3), which are fixedly mounted on the wire drum 10 on which the wire rope W is wound, And first and second proximity sensors 30a, 30b, 30c and 30d which are fixedly installed in the region close to the installation position of the metal patches 30a, 30b, 30c and 30d, (310, 320). Here, the metal patches 30a, 30b, 30c, and 30d may be circumferentially attached to the outer region of the first disk 12 coaxially rotating with the wire drum 10, 2 proximity sensor 320 may be attached to a second disk 14 fixed coaxially with the first disk 12.

The proximity sensors 310 and 320 are collectively referred to as sensors that detect that objects approach each other in a noncontact manner and can be used for the purpose of finding out that a moving object has arrived at a certain distance. The proximity sensors 310 and 320 may be a combination of a Hall element and a permanent magnet whose internal current changes due to magnetic effects, a combination of a lamp or a light emitting diode and a photosensor, a change in electrostatic capacity And the like.

The first and second proximity sensors 310 and 320 according to the embodiment of the present invention can detect the metal patches 30a, 30b, 30c and 30d rotating together with the wire drum 10. [ When the wire drum 10 makes one revolution, the wire rope of the circumferential length of the wire drum 10 is wound or unwound. Therefore, the first and the second proximity sensor 310 and the second proximity sensor 320, The length of the wire rope can be calculated by detecting the rotation of the wire drum 10 by detecting the wire rope 30.

In addition, the direction of rotation of the wire drum 10 can be determined through the sensing sequence of the first and second proximity sensors 310 and 320 to determine the direction of wire rope transfer.

As a means for detecting the tension of the wire rope, a tension sensor 330 may be applied. The tensile force sensor 330 can detect the tensile force of the wire rope by measuring the load applied to the wire rope W by mounting the tension sensor 330 on the guide member 20 that guides the wire rope W have.

3 is a control block diagram of a wire rope state detection system for a winch according to an embodiment of the present invention.

The system for detecting wire rope of a winch according to an embodiment of the present invention includes a first proximity sensor 310 and a second proximity sensor 320 for detecting the rotation of the wire drum 10, A tension sensor 330 for sensing the tension of the wire rope and a tension sensor 330 for detecting the tension of the tension sensor 330 and the feed length of the wire rope calculated by the length calculator 340. [ And a control unit 350 for outputting the sensing value to the output unit 360. [

The first proximity sensor 310 and the second proximity sensor 320 sense two or more metal patches 30 rotating together with the wire drum 10 and output a detection value to the length calculating unit 340. The sensing values of the first and second proximity sensors 310 and 320 may be output as pulse signals, respectively.

The length calculating unit 340 converts the pulse signals received from the first proximity sensor 310 and the second proximity sensor 320 into lengths.

The tensile force sensor 330 is mounted on a guide member 20 for guiding the wire rope, and senses a load applied to the wire rope W and outputs the sensed value to the control unit 350.

The controller 350 receives the length of the wire rope and the tension sensing value from the length calculator 340 and the tension sensor 330 and outputs the length and the tension sensing value through the output unit 360.

The output 360 may provide wire rope state detection values to various devices such as display means for displaying the transport length and tension, and certain control means for winch control.

4 is a control flowchart of a wire rope state detection system of a winch according to an embodiment of the present invention.

The rotation of the wire drum 10 wound with the wire rope is sensed through the first proximity sensor 310 and the second proximity sensor 320 (S110).

The movement length of the wire is calculated by the length calculating unit 340 using the sensing values of the first proximity sensor 310 and the second proximity sensor 320 (S120).

The tension of the wire rope is sensed through the tension sensor 330 (S130)

Wire state detection information including the movement length and tension of the wire rope is output (S140). Accordingly, by controlling the rotation of the wire drum 10 according to the wire state detection information, the length and tension of the wire rope can be controlled to improve the accuracy in controlling the position of the work line.

Thus, those skilled in the art will appreciate that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the embodiments described above are to be considered in all respects only as illustrative and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

10: wire drum 12: first disk
14: second disk 20: guide member
30: Metal Patch 300: Wire Status Detection System
310: first proximity sensor 320: second proximity sensor
330: tension sensor 340: length calculating unit
350: control unit 360: output unit

Claims

A first proximity sensor for detecting rotation of the wire drum;
A second proximity sensor for detecting the rotation of the wire drum at a position spaced apart from the first proximity sensor;
A length calculating unit for calculating a feed length of the wire rope according to the detection value of each of the proximity sensors;
A tension sensor for sensing a tension of the wire rope; And
And a control unit for sensing and outputting the conveying length and the tension of the wire rope.

The method according to claim 1,
Wherein the first proximity sensor and the second proximity sensor comprise:
And detecting a rotation of the wire drum by sensing a metal patch attached to the wire drum and rotating together with the wire drum.

The method according to claim 1,
The length calculating unit may calculate,
And determines the direction of the wire rope according to the detection values of the first proximity sensor and the second proximity sensor.

The method according to claim 1,
The tension sensor includes:
And a load applied to the wire rope is detected by being mounted on a guide member for guiding the wire rope.