CN-121988619-A - Cold-rolled vertical loop steel wire rope state online detection system and method

CN121988619ACN 121988619 ACN121988619 ACN 121988619ACN-121988619-A

Abstract

The invention belongs to the technical field of cold rolling, and relates to an online detection system and method for the state of a cold-rolled vertical loop steel wire rope. According to the method, the counterweight and the lifting steel wire rope of the vertical loop are detected on line through the magnetic planning device and the weak magnetic detection probe, detection signals are transmitted to the data acquisition conversion workstation for processing through cables, the detection signals are communicated with the main control terminal in a wireless mode, and defects such as wire breakage, abrasion and corrosion of the steel wire can be found in time through special software installed on the main control terminal. The method replaces the original manual rope checking mode, greatly improves the use safety of the steel wire rope, comprehensively grasps the real-time state of the steel wire rope, and provides scientific basis for reasonable rope replacement. The method has great popularization value for the detection work of the state of the steel wire of the vertical loop of the cold rolling continuous annealing and hot galvanizing unit.

Inventors

ZHOU WEIMIN
HAI NING
YU JUN

Assignees

宝山钢铁股份有限公司

Dates

Publication Date: 20260508
Application Date: 20241108

Claims (9)

1. The online detection method for the state of the cold-rolled vertical loop steel wire rope is characterized by comprising the following steps of: (1) The cold rolling vertical loop is opened to a position with the sleeve amount of 50% of the middle position, so that the steel wire rope at the detection unit is not a magnetic pole position, and the detection unit comprises a magnetic planning device for carrying out magnetic memory planning on the steel wire rope and a weak magnetic detection device, wherein the weak magnetic detection device is used for quantitatively and positionally detecting wire breakage, abrasion, rust and fatigue damage of the steel wire rope; (2) The data acquisition conversion workstation is powered on, and an application program on the main control terminal is opened; (3) When the loop is opened to the highest position or the vicinity of the lowest position, the on-line detection of 7 x 24H is started by pressing a button for starting detection in the program, and the alarm information can be checked by pressing a button for history alarm in the program at any time.
2. The method for on-line detecting the state of a cold rolled vertical loop steel wire rope according to claim 1, wherein the position of the detecting unit is replaced when the maintenance is stopped, another steel wire rope is detected, and the steps of claim 1 are repeated to perform on-line detection.
3. The online detection method for the state of the cold-rolled vertical loop steel wire rope is characterized in that the cold-rolled vertical loop steel wire rope comprises a lifting steel wire rope and a counterweight steel wire rope, and the lifting rope detection unit and the counterweight rope detection unit are of movable designs.
4. The online detection method for the state of the cold-rolled vertical loop steel wire rope is characterized by comprising two loop towers, wherein all steel wire ropes of each loop tower are arranged as a detection system, the detection system comprises two lifting rope detection positions and four counterweight rope detection positions, a data acquisition conversion workstation is shared, and all detection data of the two loop towers are uploaded to a main control terminal for data analysis and real-time display.
5. The online detection method for the state of the cold-rolled vertical loop steel wire rope is characterized in that the online detection method for the steel wire rope transmits real-time monitoring data and detailed detection data to a remote control center through an Ethernet, remote control software comprehensively displays the real-time monitoring state of the detected steel wire rope, and performs deep analysis and storage on the detailed detection data, and a damage development trend graph, a damage grading statistical graph and a damage distribution situation graph can be provided based on the data.
6. An online detection system applied to the online detection method of the state of the cold-rolled vertical loop steel wire rope according to any one of claims 1 to 5, which is characterized by comprising a magnetic planning device, a weak magnetic detection probe, a travel metering device, a data acquisition conversion workstation, a multi-channel main control terminal and processing software; The magnetic programming device performs magnetic memory programming on the steel wire rope by using a permanent magnet; The weak magnetic detection device is used for quantitatively and positionally detecting damage such as wire breakage, abrasion, rust, fatigue and the like of the steel wire rope; the stroke metering device consists of a photoelectric encoder, a friction wheel and a connecting module, is used for measuring the running distance of the steel wire rope and triggering data sampling, can accurately position the detection result of the measured steel wire rope and provides sampling pulses for a data acquisition conversion workstation according to a specified stroke interval, and is arranged at the edge of a steel wire rope winding drum or a pulley; The data acquisition conversion workstation is used for supplying power to the detection unit, processing and transmitting data of the detection subsystem and the encoder, and transmitting original detection data to the control terminal; The main control terminal and the software are used for collecting, analyzing and processing all detection data information of the steel wire rope in real time, and the target profiling type data information management system can be used for looking up and printing various data information reports or result reports at any time.
7. The online detection system for the state of the cold-rolled vertical loop steel wire rope according to claim 6, wherein the magnetic planning device and the weak magnetic detection device jointly form a detection unit, and the detection unit can be movably installed on a fixed base as a whole.
8. The cold-rolled vertical loop steel wire rope state online detection system according to claim 6, wherein the signal of the weak magnetic detection device is transmitted to a data acquisition conversion workstation through a cable, and the signal after working is communicated with a control center through an on-site Ethernet.
9. The on-line detection system for the state of the cold rolling vertical loop steel wire rope is characterized in that each loop tower is provided with a detection system, the detection system sequentially comprises a first counterweight rope detection unit, a second counterweight rope detection unit, a first lifting rope detection unit, a second lifting rope detection unit, a third counterweight rope detection unit and a fourth counterweight rope detection unit, the six detection units are connected with a first data conversion workstation, each detection unit comprises a magnetic planning device and a weak magnetic detection device, signals of the weak magnetic detection devices are transmitted to the data acquisition conversion workstation through cables, the signals after working are communicated with a control center through an on-site Ethernet, and all detection data of the two loop towers are uploaded to a main control terminal for data analysis and real-time display.

Description

Cold-rolled vertical loop steel wire rope state online detection system and method Technical Field The invention belongs to the technical field of cold rolling, and relates to an online detection system and an online detection method for the state of a cold-rolled vertical loop steel wire rope. The special software installed on the main control terminal can discover defects of broken wire, abrasion, corrosion and the like of the steel wire in time. Background Company scientists began to study the "memory magnetic field phenomenon" in the middle of the eighties of the last century. In the process of exploring the change states of microscopic substances 'magnetic domains' and 'electron spin magnetic moments' formed by quantum multi-body effects in ferromagnetic materials, the method has the advantages that 'vectors' of electron spin magnetic moments are in unordered states in the magnetic domains of the internal microscopic arrangement of most ferromagnetic materials in a natural state, unordered-ordered-unordered change motion rules exist under the condition of human intervention, and a motion magnetic field is applied to the ferromagnetic materials, so that the number of magnetic domains in a certain direction can be changed, and the magnetic domains have moderate low-level magnetic energy products, so that a 'memory magnetic field' is formed. The finding has great significance, not only establishes a brand-new microcosmic physics principle of space magnetic field vector synthesis, but also lays a theoretical foundation of a new magnetic branch subject, namely 'memory magnetic field'. According to the discovery, a company scientist invents a brand-new 'magnetic memory type weak magnetic nondestructive inspection technology', can distinguish physical characteristics of materials in a memory magnetic field state, overturns the traditional strong magnetic inspection technology, and is at an international leading level in the field of nondestructive inspection of ferromagnetic materials. The magnetic memory type weak magnetic detection technology developed according to the magnetic memory principle fully utilizes the magnetic memory characteristic of ferromagnetic materials, actively designs a quantized moderate memory magnetic field, adopts a wide-distance and non-contact weak magnetic sensing technology, and quantitatively detects various damages such as broken wires, abrasion, rust, fatigue and the like generated by strength loss of the steel wire rope by continuously and uninterruptedly collecting magnetic energy potential difference information distributed and memorized in the volume elements of the steel wire rope. Thoroughly solves the technical problem of steel wire rope detection. At present, the steel wire rope state detection device developed according to the weak magnetic detection principle is successfully applied to industries such as cableways, port machines, mines and the like. The following fig. 6 is an application scenario on a cableway wire rope: However, the online detection technology of the state of the steel wire rope is never applied to cold rolling of the loopers. The continuous annealing and hot galvanizing unit in cold rolling mill has several vertical loops, including two loops with 8 lifting wires, diameter ¢ mm, single wire length 250 m, 16 weight wires with diameter ¢ mm, single wire length 37.2 m. The steel wire ropes are all steel core ropes. At present, the loop steel wire rope is installed in the safety management and has the following problems: 1. The steel wire rope checking method is also a manual 'eye-seeing hand touch' mode, and the steel wire rope checking method is required to check once a week, but is limited by time and space, so that the actual condition of the steel wire rope within the whole length range is difficult to find in time, and defects such as broken wire abrasion and the like cannot be found in time. 2. The manual rope checking is affected by the sludge coverage on the surface of the rope, illumination conditions, visual field limitation, working experience, responsibility center and other factors, the reliability of the rope checking result is low, only external obvious broken wires can be found, the broken wires of the yarn joints are difficult to find, and the internal damage of the steel wire rope cannot be checked. 3. The manual rope checking efficiency is low, the rope speed is controlled to be 0.3m/s during checking, at least about 2 hours are needed for checking all 8 lifting steel wire ropes once (two people check at the same time), and about 5 hours are needed for checking 16 counterweight ropes once. In the daily production process, only a small number of rope portions can be inspected in a sampling way, large-scale missed inspection of the rope portions exists, and potential safety hazards are prominent. 4. The working condition of acceleration or deceleration of the steel wire rope of the outlet loop often occurs, and the uneven load changes