阅读说明：本技术 一种高线不冷段长度的测量方法及其装置 (Method and device for measuring length of high-speed wire non-cooling section ) 是由 廖琳琳 张玖 魏勇 赵树茂 严海峰 吕伍 陈健健 翁柳明 王义惠 施发挥 傅建伟 于 2021-08-13 设计创作，主要内容包括：本发明提供一种高线不冷段长度的测量方法及其装置,根据高线穿水冷却时,穿水与否,以及是否完全穿水,引起的高线轧件表面温度差异的特征,通过高速线阵红外测温模块和分析模块对高线轧件表面温度随时间的变化特征进行监测和分析,获取轧件不冷段对应的时长,结合轧件的运动速度,实现高线不冷段长度的在线测量,进而为轧件不冷段的准确剪切提供依据,避免轧件不冷段不完全剪切引起的后续产品的质量问题,以及轧件不冷段过剪切引起的轧件收得率降低的问题。(The invention provides a method and a device for measuring the length of an uncooled section of a high-speed wire array, which are used for monitoring and analyzing the change characteristics of the surface temperature of a rolled piece of the high-speed wire array along with time according to the characteristics of the surface temperature difference of the rolled piece of the high-speed wire array caused by whether water passes or not and whether water passes completely or not when the high-speed wire passes through the water for cooling, so as to obtain the corresponding time length of the uncooled section of the rolled piece, realize the online measurement of the length of the uncooled section of the high-speed wire array by combining the movement speed of the rolled piece, further provide a basis for the accurate shearing of the uncooled section of the rolled piece, avoid the quality problem of subsequent products caused by the incomplete shearing of the uncooled section of the rolled piece and the problem of the reduction of the yield of the rolled piece caused by the over-shearing of the uncooled section of the rolled piece.)

1. A method for measuring the length of a high-speed wire non-cooling section comprises the following steps:

measuring the characteristic of the surface temperature of each rolled piece along with the change of time by a linear array infrared temperature measurement module;

acquiring characteristic information of a rolled piece through a production informatization management system, and inputting the characteristic information of the rolled piece into a communication module;

the linear array infrared temperature measurement module measures the surface temperature of each rolled piece and records a curve graph of the surface temperature of the rolled piece along with the change of time;

the analysis module analyzes the curve characteristics of temperature and time, wherein the characteristics are that the surface temperature of the non-cold section rolled piece is high, and the surface temperature of the cooling section rolled piece is low, so that the corresponding time length of the non-cold section rolled piece is obtained; obtaining the length of the non-cold section binding piece by multiplying the time length corresponding to the non-cold section binding piece by the movement speed of the binding piece, analyzing the obtained length result of the non-cold section binding piece, and storing the result into a data storage module;

and the information of the data storage module displays the measurement result of the non-cold section through the display module.

2. The method for measuring the length of the high-wire non-cold section as claimed in claim 1, wherein: the distance between the centers of two temperature measuring areas on the surface of the rolled piece to be measured, which correspond to two adjacent pixels of the linear array infrared temperature measuring module, is less than or equal to 1/5 of the diameter of the rolled piece to be measured.

3. The method for measuring the length of the high-wire non-cold section as claimed in claim 1, wherein: the size of a temperature measuring area of the surface of the rolled piece to be measured corresponding to a single pixel of the linear array infrared temperature measuring module is less than or equal to 1/5 of the diameter of the rolled piece to be measured.

4. The method for measuring the length of the high-wire non-cold section as claimed in claim 1, wherein: the linear array infrared temperature measurement module measures the surface temperature of each rolled piece, and records the temperature value according to time, wherein the measurement frequency is 100 Hz-2000 Hz.

5. The method for measuring the length of the high-wire non-cold section as claimed in claim 1, wherein: the characteristic information of the rolled piece comprises the steel grade of the rolled piece, the diameter of the rolled piece, the serial number of the rolled piece and the movement speed information of the rolled piece.

6. A measuring device for the length of a high-speed wire non-cold section comprises:

the linear array infrared temperature measurement module is used for measuring the characteristic that the surface temperature of each rolled piece changes along with time;

the communication module is used for acquiring the characteristic information of the rolled piece acquired by the production informatization management system;

the analysis module is used for determining the length of the non-cooling section of the binding piece by analyzing a temperature-time curve chart and the movement speed of the binding piece;

the data storage module is used for storing the information of the communication module and the information of the analysis module of each rolled piece;

and the display module displays the measurement result of the length of the non-cold section.

7. The apparatus for measuring the length of the high wire uncooled section of claim 6, wherein: the area measured by the linear array infrared temperature measurement module covers the diameter direction of the whole rolled piece and the runout range of the rolled piece along the diameter direction is 5-60 mm.

8. The apparatus for measuring the length of the high wire uncooled section of claim 6, wherein: the area measured by the linear array infrared temperature measurement module is 1.2 times of the diameter direction of the whole rolled piece and the jumping range of the rolled piece along the diameter direction.

9. The apparatus for measuring the length of the high wire uncooled section of claim 6, wherein: the distance between the centers of two temperature measuring areas on the surface of the rolled piece to be measured, which correspond to two adjacent pixels of the linear array infrared temperature measuring module, is less than or equal to 1/5 of the diameter of the rolled piece to be measured.

10. The apparatus for measuring the length of the high wire uncooled section of claim 6, wherein: the size of a temperature measuring area of the surface of the rolled piece to be measured corresponding to a single pixel of the linear array infrared temperature measuring module is less than or equal to 1/5 of the diameter of the rolled piece to be measured.

11. The apparatus for measuring the length of the high wire uncooled section of claim 6, wherein: the linear array infrared temperature measurement module is a high-speed linear array infrared temperature measurement module, and the scanning frequency is 100 Hz-2000 Hz.

12. The apparatus for measuring the length of the high wire uncooled section of claim 6, wherein: the characteristic information of the rolled piece is steel type, the diameter of the rolled piece, the serial number of the rolled piece and the movement speed information of the rolled piece.

13. The apparatus for measuring the length of the high wire uncooled section of claim 6, wherein: the linear array infrared temperature measurement module is provided with a cooling device and a dustproof device.

14. The apparatus for measuring the length of the high wire uncooled section of claim 6, wherein: the communication module is connected with the production informatization management system through the industrial Ethernet, and the production informatization management system is used for acquiring the steel grade of the rolled piece, the diameter of the rolled piece, the serial number of the rolled piece and the movement speed information of the rolled piece.

15. The apparatus for measuring the length of the high wire uncooled section of claim 6, wherein: the linear array infrared temperature measurement module is installed after water cooling and the surface of a rolled piece is in an anhydrous state.

16. The apparatus for measuring the length of the high wire uncooled section of claim 6, wherein: and the measuring device of the high-speed wire non-cooling section is arranged in front of the laying head.

Technical Field

The invention belongs to the technical field of high-speed wire production, and particularly relates to a method and a device for measuring the length of a non-cooled section of a high-speed wire.

Background

The non-cooling section is a problem which is difficult to avoid and caused by water passing cooling in high-speed wire production, the non-cooling section or the incomplete cooling section is caused by non-water passing or incomplete water passing, and the accurate positioning and cutting of the length of the non-cooling section is an important link for ensuring the quality of subsequent products. The existing method for judging the non-cold section according to the surface state of a rolled piece can only judge the non-cold section caused by water penetration or not, and the non-cold section caused by incomplete water penetration is difficult to accurately position. In addition, the method has the problems of high labor intensity, time consumption and easy influence of experience of operators. The method for judging the length of the uncooled section by manual observation has the defects that the problem of the uncooled section shearing failure or the over-shearing failure can be caused, the quality dispute can be caused by the shearing failure, and the wire yield can be reduced by the over-shearing. In the patent of publication No. CN102671961A, a method for detecting the length of a non-cold section of a hot-rolled strip steel head is disclosed, the method obtains a 'red head' non-cold section by photographing, the whole non-cold section area is difficult to cover by single photographing, the problem of non-cold section coverage can be solved by photographing for many times, but the problem of non-cold section information loss in the interval of two photographing exists, particularly, the speed of a high line is high, and the length of the non-cold section is large, so the method is difficult to solve the problem of measuring the non-cold section of the high line.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a method and a device for measuring the length of an uncooled section of a high-speed wire.

In order to achieve the purpose, the invention adopts the following technical scheme:

a method for measuring the length of a high-speed wire non-cooling section comprises the following steps:

measuring the characteristic of the surface temperature of each rolled piece along with the change of time by a linear array infrared temperature measurement module;

acquiring characteristic information of a rolled piece through a production informatization management system, and inputting the characteristic information of the rolled piece into a communication module;

the linear array infrared temperature measurement module measures the surface temperature of each rolled piece and records a curve graph of the surface temperature of the rolled piece along with the change of time;

the analysis module analyzes the curve characteristics of temperature and time, wherein the characteristics are that the surface temperature of the non-cold section rolled piece is high, and the surface temperature of the cooling section rolled piece is low, so that the corresponding time length of the non-cold section rolled piece is obtained; obtaining the length of the non-cold section binding piece by multiplying the time length corresponding to the non-cold section binding piece by the movement speed of the binding piece, analyzing the obtained length result of the non-cold section binding piece, and storing the result into a data storage module;

and the information of the data storage module displays the measurement result of the non-cold section through the display module.

Further, the distance between the centers of two temperature measuring areas on the surface of the rolled piece to be measured, which correspond to two adjacent pixels of the linear array infrared temperature measuring module, is less than or equal to 1/5 of the diameter of the rolled piece to be measured.

Further, the size of the temperature measuring area of the surface of the rolled piece to be measured corresponding to a single pixel of the linear array infrared temperature measuring module is less than or equal to 1/5 of the diameter of the rolled piece to be measured.

Further, the linear array infrared temperature measurement module measures the surface temperature of each rolled piece, and records the temperature value according to time, wherein the measurement frequency is 100 Hz-2000 Hz.

Further, the characteristic information of the rolled piece comprises the steel grade of the rolled piece, the diameter of the rolled piece, the serial number of the rolled piece and the movement speed information of the rolled piece.

A measuring device for the length of a high-speed wire non-cold section comprises:

the linear array infrared temperature measurement module is used for measuring the characteristic that the surface temperature of each rolled piece changes along with time;

the communication module is used for acquiring the characteristic information of the rolled piece acquired by the production informatization management system;

the analysis module is used for determining the length of the non-cooling section of the binding piece by analyzing a temperature-time curve chart and the movement speed of the binding piece;

the data storage module is used for storing the information of the communication module and the information of the analysis module of each rolled piece;

and the display module displays the measurement result of the length of the non-cold section.

Furthermore, the area measured by the linear array infrared temperature measurement module covers the diameter direction of the whole rolled piece and the jumping range of the rolled piece along the diameter direction is 5-60 mm.

Furthermore, the area measured by the linear array infrared temperature measurement module is 1.2 times of the diameter direction of the whole rolled piece and the jumping range of the rolled piece along the diameter direction.

Further, the distance between the centers of two temperature measuring areas on the surface of the rolled piece to be measured, which correspond to two adjacent pixels of the linear array infrared temperature measuring module, is less than or equal to 1/5 of the diameter of the rolled piece to be measured.

Further, the size of the temperature measuring area of the surface of the rolled piece to be measured corresponding to a single pixel of the linear array infrared temperature measuring module is less than or equal to 1/5 of the diameter of the rolled piece to be measured.

Further, the linear array infrared temperature measurement module is a high-speed linear array infrared temperature measurement module, and the scanning frequency is 100 Hz-2000 Hz.

Further, the characteristic information of the rolled piece is steel type, rolled piece diameter, rolled piece number and rolled piece movement speed information

Furthermore, the linear array infrared temperature measurement module is provided with a cooling device and a dustproof device.

Further, the communication module is connected with the production informatization management system through the industrial Ethernet, and the production informatization management system is used for acquiring the steel grade of the rolled piece, the diameter of the rolled piece, the serial number of the rolled piece and the movement speed information of the rolled piece.

Furthermore, the linear array infrared temperature measurement module is installed after water cooling and the surface of the rolled piece is in a water-free state.

Further, the measuring device for the high-speed wire non-cooling section is arranged in front of the laying head.

The invention provides a method and a device for measuring the length of an uncooled section of a high-speed wire array, which are used for monitoring and analyzing the change characteristic of the surface temperature of a rolled piece of the high-speed wire array along with time according to the characteristics of the surface temperature difference of the rolled piece of the high-speed wire array caused by whether water passes or not and whether water passes completely or not when the high-speed wire passes through the water for cooling, so as to obtain the corresponding time length of the uncooled section of the rolled piece, realize the online measurement of the length of the uncooled section of the high-speed wire array by combining the movement speed of the rolled piece, further provide a basis for the accurate shearing of the uncooled section of the rolled piece, avoid the quality problem of subsequent products caused by the incomplete shearing of the uncooled section of the rolled piece and the problem of the reduction of the yield of the rolled piece caused by the over-shearing of the uncooled section of the rolled piece.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic diagram of a linear array infrared temperature measurement module of the present invention;

in the figure: 1-a rolled piece, 2-a linear array infrared temperature measurement module, 3-an analysis module, 4-a communication module, 5-a data storage module and 6-a display module; 21-base, 22-pillar, 23-connecting pipe, 24-linear array infrared thermometer, 25-cooling device, 26-gas purging device, 27-dustproof lens and quick-change lens frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

As shown in fig. 1 and 2, a measuring device for measuring the length of a high wire non-cooling section comprises: the linear array infrared temperature measurement module 2 is used for measuring the characteristic that the surface temperature of each rolled piece 1 changes along with time, the linear array infrared temperature measurement module measures the surface temperature of each rolled piece 2, the highest temperature measured by all temperature measurement pixels of the linear array infrared temperature measurement module is used as the surface temperature of the rolled piece, and a curve graph of the surface temperature of the rolled piece changing along with time is recorded; the communication module 4 acquires the steel grade, the diameter of the rolled piece, the serial number of the rolled piece and the movement speed information of the rolled piece 1 through a production informatization management system; the recorded temperature value and the information of the communication module enter an analysis module 3, the duration of the non-cold section is determined according to the characteristics that the surface temperature of the rolled piece is high when the rolled piece is not cooled by water and the surface temperature of the rolled piece is relatively low when the rolled piece is cooled by water, the length of the non-cold section is calculated by combining the movement speed of the rolled piece, the length of the non-cold section is obtained by multiplying the duration corresponding to the non-cold section binding piece by the movement speed of the binding piece, the length result of the non-cold section binding piece obtained by analysis is stored in a data storage module 5; the information of the communication module 4 and the information of the analysis module 3 of each rolled piece are stored in the data storage module 5, the information of the data storage module 5 displays the result through the display module 6, and the binding steel type, the binding diameter, the binding number, the binding movement speed, the temperature curve chart and the non-cold section length information of each rolled piece 1 are displayed.

A method for measuring the length of a high-speed wire non-cooling section comprises the following steps:

measuring the characteristic of the surface temperature of each rolled piece along with the change of time by a linear array infrared temperature measurement module;

acquiring characteristic information of a rolled piece through a production informatization management system, and inputting the characteristic information of the rolled piece into a communication module;

the linear array infrared temperature measurement module measures the surface temperature of each rolled piece and records a curve graph of the surface temperature of the rolled piece along with the change of time;

the analysis module analyzes the curve characteristics of temperature and time, wherein the characteristics are that the surface temperature of the non-cold section rolled piece is high, and the surface temperature of the cooling section rolled piece is low, so that the corresponding time length of the non-cold section rolled piece is obtained; obtaining the length of the non-cold section binding piece by multiplying the time length corresponding to the non-cold section binding piece by the movement speed of the binding piece, and storing the length result of the non-cold section binding piece obtained by analysis into a data storage module;

and the information of the data storage module displays the measurement result of the non-cold section through the display module.

For example, the surface temperature of the rolled piece is 900 ℃ when the rolled piece is not cooled, the surface temperature of the rolled piece is 860 ℃ when the rolled piece is completely cooled, and the surface temperature of the rolled piece in the transition process from not cooling to completely cooling is 860-900 ℃. According to the change curve of the temperature along with the time, the time length of 900 ℃ is 800ms, the time length of 860-900 ℃ is 50ms, and then the length of the non-cooling section is 85m through calculation in combination with the movement speed of the rolled piece of 100 m/s.

The scanning direction of the linear array infrared temperature measurement module 2 is perpendicular to the moving direction of a rolled piece, the area of the temperature measured by the linear array infrared temperature measurement module 2 covers the diameter direction of the whole rolled piece and the jumping range of the rolled piece along the diameter direction is 5-60 mm, the number of pixels of the linear array infrared temperature measurement module 2 is 5, the distance between the centers of two temperature measurement areas on the surface of the rolled piece to be measured corresponding to two adjacent pixels is equal to 1/5 of the diameter of the rolled piece to be measured, the area measured by the linear array infrared temperature measurement module is 1.2 times of the diameter direction of the whole rolled piece and the jumping range of the rolled piece along the diameter direction, the linear array infrared temperature measurement module 2 is a high-speed linear array infrared temperature measurement module, and the scanning frequency is 100 Hz.

The linear array infrared temperature measurement module 2 is provided with a cooling device 25, and the cooling mode can be air cooling, liquid cooling or semiconductor refrigeration. The linear array infrared temperature measurement module 2 comprises a base 21, a support column 22 and a linear array infrared thermometer 24, wherein the linear array infrared thermometer 24 is connected with the base 21 through a connecting pipe 23, a cooling device 25 and a gas purging device 26 are arranged on the linear array infrared thermometer 24, and a dustproof lens and a quick-change lens frame 27 are also arranged on the gas purging device 26; and cooling the linear array infrared temperature measurement module 2 by water. Fig. 2 illustrates an air-cooled embodiment in which the cooling air for air cooling and the purge air for the dust-proof device are connected in series. The cooling air of the air cooling and the blowing air of the dustproof device can also be connected in parallel.

When the cooling method is water cooling, the pipe of the cooling device 25 for cooling water and the pipe of the gas purging device 26 are separately connected.

The linear array infrared temperature measurement module 2 is provided with a dustproof device 26, and is composed of a dustproof lens, a quick-change lens support and a gas purging device, wherein the purging gas 26 is connected with the dustproof device, and dust, water vapor and other pollution of the dustproof lens are prevented through gas purging.

The communication module 5 is connected with the production informatization management system through the industrial Ethernet, and obtains the steel grade of the rolled piece 1, the diameter of the rolled piece 1, the number of the rolled piece 1 and the movement speed information of the rolled piece 1 through the production informatization management system.

The measuring device of the high-speed wire non-cooling section is arranged in front of the laying head after water cooling and when the surface of the rolled piece 1 is in a waterless state.

Example 2

As shown in fig. 1 and 2, a measuring device for measuring the length of a high wire non-cooling section comprises: the linear array infrared temperature measurement module 2 is used for measuring the characteristic that the surface temperature of each rolled piece 1 changes along with time, the linear array infrared temperature measurement module measures the surface temperature of each rolled piece 2, the highest temperature measured by all temperature measurement pixels of the linear array infrared temperature measurement module is used as the surface temperature of the rolled piece, and a curve graph of the surface temperature of the rolled piece changing along with time is recorded; the communication module 4 acquires the steel grade, the diameter of the rolled piece, the serial number of the rolled piece and the movement speed information of the rolled piece 1 through a production informatization management system; the recorded temperature value and the information of the communication module enter an analysis module 3, the duration of the non-cold section is determined according to the characteristics that the surface temperature of the rolled piece is high when the rolled piece is not cooled by water and the surface temperature of the rolled piece is relatively low when the rolled piece is cooled by water, the length of the non-cold section is calculated by combining the movement speed of the rolled piece, the length of the non-cold section is obtained by multiplying the duration corresponding to the non-cold section binding piece by the movement speed of the binding piece, the length result of the non-cold section binding piece obtained by analysis is stored in a data storage module 5; the information of the communication module 4 and the information of the analysis module 3 of each rolled piece are stored in the data storage module 5, the information of the data storage module 5 displays the result through the display module 6, and the binding steel type, the binding diameter, the binding number, the binding movement speed, the temperature curve chart and the non-cold section length information of each rolled piece 1 are displayed.

A method for measuring the length of a high-speed wire non-cooling section comprises the following steps:

measuring the characteristic of the surface temperature of each rolled piece along with the change of time by a linear array infrared temperature measurement module;

acquiring characteristic information of a rolled piece through a production informatization management system, and inputting the characteristic information of the rolled piece into a communication module;

the linear array infrared temperature measurement module measures the surface temperature of each rolled piece and records a curve graph of the surface temperature of the rolled piece along with the change of time;

the analysis module analyzes the curve characteristics of temperature and time, wherein the characteristics are that the surface temperature of the non-cold section rolled piece is high, and the surface temperature of the cooling section rolled piece is low, so that the corresponding time length of the non-cold section rolled piece is obtained; obtaining the length of the non-cold section binding piece by multiplying the time length corresponding to the non-cold section binding piece by the movement speed of the binding piece, and storing the length result of the non-cold section binding piece obtained by analysis into a data storage module;

and the information of the data storage module displays the measurement result of the non-cold section through the display module.

For example, the surface temperature of the rolled piece is 600 ℃ when the rolled piece is not cooled, the surface temperature of the rolled piece is 560 ℃ when the rolled piece is completely cooled, and the surface temperature of the rolled piece in the transition process from not cooling to completely cooling is 560-600 ℃. According to the change curve of the temperature along with the time, the time length of 600 ℃ is 800ms, the time length of 560-600 ℃ is 50ms, and the length of the non-cooling section is 85m through calculation according to the movement speed of the rolled piece of 100 m/s.

The scanning direction of the linear array infrared temperature measurement module 2 is perpendicular to the moving direction of a rolled piece, the area of the temperature measured by the linear array infrared temperature measurement module 2 covers the diameter direction of the whole rolled piece and the jumping range of the rolled piece along the diameter direction is 5-60 mm, the number of pixels of the linear array infrared temperature measurement module 2 is 5, the distance between the centers of two temperature measurement areas on the surface of the rolled piece to be measured corresponding to two adjacent pixels is equal to 1/5 of the diameter of the rolled piece to be measured, the area measured by the linear array infrared temperature measurement module is 1.2 times of the diameter direction of the whole rolled piece and the jumping range of the rolled piece along the diameter direction, the linear array infrared temperature measurement module 2 is a high-speed linear array infrared temperature measurement module, and the scanning frequency is 1000 Hz.

The linear array infrared temperature measurement module 2 is provided with a cooling device 25, and the cooling mode can be air cooling, liquid cooling or semiconductor refrigeration. The linear array infrared temperature measurement module 2 comprises a base 21, a support column 22 and a linear array infrared thermometer 24, wherein the linear array infrared thermometer 24 is connected with the base 21 through a connecting pipe 23, a cooling device 25 and a gas purging device 26 are arranged on the linear array infrared thermometer 24, and a dustproof lens and a quick-change lens frame 27 are also arranged on the gas purging device 26; and cooling the linear array infrared temperature measurement module 2 by water. Fig. 2 illustrates an air-cooled embodiment in which the cooling air for air cooling and the purge air for the dust-proof device are connected in series. The cooling air of the air cooling and the blowing air of the dustproof device can also be connected in parallel.

When the cooling method is water cooling, the pipe of the cooling device 25 for cooling water and the pipe of the gas purging device 26 are separately connected.

The linear array infrared temperature measurement module 2 is provided with a dustproof device 26, and is composed of a dustproof lens, a quick-change lens support and a gas purging device, wherein the purging gas 26 is connected with the dustproof device, and dust, water vapor and other pollution of the dustproof lens are prevented through gas purging.

The communication module 5 is connected with the production informatization management system through the industrial Ethernet, and obtains the steel grade of the rolled piece 1, the diameter of the rolled piece 1, the number of the rolled piece 1 and the movement speed information of the rolled piece 1 through the production informatization management system.

The measuring device of the high-speed wire non-cooling section is arranged in front of the laying head after water cooling and when the surface of the rolled piece 1 is in a waterless state.

Example 3

As shown in fig. 1 and 2, a measuring device for measuring the length of a high wire non-cooling section comprises: the linear array infrared temperature measurement module 2 is used for measuring the characteristic that the surface temperature of each rolled piece 1 changes along with time, the linear array infrared temperature measurement module measures the surface temperature of each rolled piece 2, the highest temperature measured by all temperature measurement pixels of the linear array infrared temperature measurement module is used as the surface temperature of the rolled piece, and a curve graph of the surface temperature of the rolled piece changing along with time is recorded; the communication module 4 acquires the steel grade, the diameter of the rolled piece, the serial number of the rolled piece and the movement speed information of the rolled piece 1 through a production informatization management system; the recorded temperature value and the information of the communication module enter an analysis module 3, the duration of the non-cold section is determined according to the characteristics that the surface temperature of the rolled piece is high when the rolled piece is not cooled by water and the surface temperature of the rolled piece is relatively low when the rolled piece is cooled by water, the length of the non-cold section is calculated by combining the movement speed of the rolled piece, the length of the non-cold section is obtained by multiplying the duration corresponding to the non-cold section binding piece by the movement speed of the binding piece, the length result of the non-cold section binding piece obtained by analysis is stored in a data storage module 5; the information of the communication module 4 and the information of the analysis module 3 of each rolled piece are stored in the data storage module 5, the information of the data storage module 5 displays the result through the display module 6, and the binding steel type, the binding diameter, the binding number, the binding movement speed, the temperature curve chart and the non-cold section length information of each rolled piece 1 are displayed.

A method for measuring the length of a high-speed wire non-cooling section comprises the following steps:

measuring the characteristic of the surface temperature of each rolled piece along with the change of time by a linear array infrared temperature measurement module;

acquiring characteristic information of a rolled piece through a production informatization management system, and inputting the characteristic information of the rolled piece into a communication module;

the linear array infrared temperature measurement module measures the surface temperature of each rolled piece and records a curve graph of the surface temperature of the rolled piece along with the change of time;

the analysis module analyzes the curve characteristics of temperature and time, wherein the characteristics are that the surface temperature of the non-cold section rolled piece is high, and the surface temperature of the completely-cooled section rolled piece is low, so that the corresponding duration of the non-cold section rolled piece is obtained; obtaining the length of the non-cold section binding piece by multiplying the time length corresponding to the non-cold section binding piece by the movement speed of the binding piece, and storing the length result of the non-cold section binding piece obtained by analysis into a data storage module;

and the information of the data storage module displays the measurement result of the non-cold section through the display module.

For example, the surface temperature of the rolled piece is 1000 ℃ when the rolled piece is not cooled, the surface temperature of the rolled piece is 960 ℃ when the rolled piece is completely cooled, and the surface temperature of the rolled piece in the transition process from not cooling to completely cooling is 960-1000 ℃. According to the change curve of the temperature along with the time, the time length of 1000 ℃ is 800ms, the time length of 960-1000 ℃ is 50ms, and the length of the non-cooling section is 85m through calculation according to the movement speed of the rolled piece of 100 m/s.

The scanning direction of the linear array infrared temperature measurement module 2 is perpendicular to the moving direction of a rolled piece, the area of the temperature measured by the linear array infrared temperature measurement module 2 covers the diameter direction of the whole rolled piece and the jumping range of the rolled piece along the diameter direction is 5-60 mm, the number of pixels of the linear array infrared temperature measurement module 2 is 5, the distance between the centers of two temperature measurement areas on the surface of the rolled piece to be measured corresponding to two adjacent pixels is equal to 1/5 of the diameter of the rolled piece to be measured, the area measured by the linear array infrared temperature measurement module is 1.2 times of the diameter direction of the whole rolled piece and the jumping range of the rolled piece along the diameter direction, the linear array infrared temperature measurement module 2 is a high-speed linear array infrared temperature measurement module, and the scanning frequency is 2000 Hz.

The linear array infrared temperature measurement module 2 is provided with a cooling device 25, and the cooling mode can be air cooling, liquid cooling or semiconductor refrigeration. The linear array infrared temperature measurement module 2 comprises a base 21, a support column 22 and a linear array infrared thermometer 24, wherein the linear array infrared thermometer 24 is connected with the base 21 through a connecting pipe 23, a cooling device 25 and a gas purging device 26 are arranged on the linear array infrared thermometer 24, and a dustproof lens and a quick-change lens frame 27 are also arranged on the gas purging device 26; and cooling the linear array infrared temperature measurement module 2 by water. Fig. 2 illustrates an air-cooled embodiment in which the cooling air for air cooling and the purge air for the dust-proof device are connected in series. The cooling air of the air cooling and the blowing air of the dustproof device can also be connected in parallel.

When the cooling method is water cooling, the pipe of the cooling device 25 for cooling water and the pipe of the gas purging device 26 are separately connected.

The linear array infrared temperature measurement module 2 is provided with a dustproof device 26, and is composed of a dustproof lens, a quick-change lens support and a gas purging device, wherein the purging gas 26 is connected with the dustproof device, and dust, water vapor and other pollution of the dustproof lens are prevented through gas purging.

The communication module 5 is connected with the production informatization management system through the industrial Ethernet, and obtains the steel grade of the rolled piece 1, the diameter of the rolled piece 1, the number of the rolled piece 1 and the movement speed information of the rolled piece 1 through the production informatization management system.

The measuring device of the high-speed wire non-cooling section is arranged in front of the laying head after water cooling and when the surface of the rolled piece 1 is in a waterless state.

According to the characteristics of the difference of the surface temperature of the rolled piece 1 caused by water penetration or not and complete water penetration or not when the rolled piece 1 at a high speed is cooled by water, the characteristics of the change of the surface temperature of the rolled piece 1 along with time are monitored and analyzed by the high-speed linear array infrared temperature measurement module 2 and the analysis module 3, the time length corresponding to the non-cold section of the rolled piece 1 is obtained, the online measurement of the length of the non-cold section at the high speed is realized by combining the movement speed of the rolled piece 1, and then the basis is provided for the accurate shearing of the non-cold section of the rolled piece, the quality problem of subsequent products caused by the incomplete shearing of the non-cold section of the rolled piece is avoided, and the problem of the reduction of the yield of the rolled piece caused by the over-shearing of the non-cold section of the rolled piece is solved.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention and not to limit it; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.