CN-122007186-A - Method for directionally blocking water spraying at outlet side of rolling mill and guaranteeing precision of width measuring instrument

CN122007186ACN 122007186 ACN122007186 ACN 122007186ACN-122007186-A

Abstract

The invention relates to the technical field of steel rolling production equipment, and particularly discloses a method for directionally blocking water spraying at an outlet side of a rolling mill and guaranteeing precision of a width gauge, which comprises a directional blocking mechanism, a diversion recovery mechanism, a sealing protection mechanism and an intelligent monitoring and adjusting mechanism; the intelligent monitoring and adjusting mechanism monitors the water flow state and the detection precision of the width measuring instrument in real time and automatically adjusts the angle of the blocking plate, thereby effectively avoiding the interference of the scale removing water to the width measuring instrument, ensuring the long-term stable operation of the width measuring instrument, improving the detection precision of the size of rolled steel products, reducing the maintenance cost of equipment and being suitable for various hot rolling mill production lines.

Inventors

JIANG FUXIAO
LIU CHANGJIANG
WANG ZHIBO
CAO LIQI
ZHAO HENGYANG
Cheng Hedong
LIU CHENGQIANG

Assignees

山东钢铁集团永锋临港有限公司
山东锋通金属科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260408

Claims (10)

1. The method for directionally blocking water spraying at the outlet side of the rolling mill and guaranteeing the precision of the width measuring instrument is characterized by comprising the following steps of: S1, before the rolling mill is started, setting an initial angle of a blocking plate of the directional blocking mechanism, the air quantity of the negative pressure air draft assembly and the humidity threshold value of the drying assembly by a central controller; S2, in a real-time blocking stage, when the rolling mill runs, the descaling device sprays high-pressure water to remove scale on the surface of a rolled piece, and the blocking plate adjusts the angle under the control of the central controller according to detection data to guide the splashed descaling water to a diversion recovery mechanism below; s3, in a sealing protection stage, the telescopic sealing curtain automatically opens and closes according to the position of the rolled piece to form a closed space of a detection area of the width gauge; And S4, in the intelligent adjustment stage, an image acquisition module acquires a detection image of the width measuring instrument in real time, an accuracy analysis module calculates a detection error, a central controller automatically adjusts the angle of the blocking plate until the error returns to a normal range if the error exceeds a set threshold value, and a remote communication module uploads equipment operation data to a monitoring platform.
2. The method for guaranteeing the accuracy of the water spraying directional blocking and width measuring instrument on the outlet side of the rolling mill according to claim 1, wherein the directional blocking mechanism in the step S1 is arranged above and on two sides of a rolling line between the descaling device and the width measuring instrument on the outlet side of the rolling mill, the directional blocking mechanism comprises a blocking plate, an angle adjusting component and a supporting frame, the blocking plate is of an arc-shaped structure, the angle adjusting component comprises a driving motor, a transmission gear set and an angle sensor, the angle sensor is arranged on a driving shaft of the driving motor, the driving motor controls the rotation shaft to rotate through the transmission gear, the rotation shaft is fixedly connected with the blocking plate, the rotation shaft is movably arranged on the supporting frame through a bearing, and the driving motor controls the blocking plate to rotate around the supporting frame for angle adjustment within the range of 0-60 degrees.
3. The method for directionally blocking water spray at the outlet side of a rolling mill and guaranteeing precision of a width gauge according to claim 2, wherein the initial angle of the blocking plate is preset according to the specification of a rolled piece and the pressure of descaling water.
4. The method for directionally blocking water spraying on the outlet side of a rolling mill and guaranteeing the precision of a width gauge according to claim 2, wherein the surface of the blocking plate is provided with a nano hydrophobic coating, the contact angle of the nano hydrophobic coating is more than or equal to 150 degrees, reinforcing ribs are arranged inside the blocking plate, the reinforcing ribs are made of stainless steel, and the distance between the reinforcing ribs is 15 cm to 20cm.
5. The method for guaranteeing the precision of the directional blocking and width measuring instrument for spraying water on the outlet side of the rolling mill according to claim 2, wherein the angle adjusting assembly is further provided with a manual adjusting knob, the manual adjusting knob is arranged on the rotating shaft and is provided with a locking gear, and the manual jigger adjusting device is used for adjusting the angle of the blocking plate in the power-off state, and the adjusting precision is 0.5 degrees.
6. The method for guaranteeing the accuracy of the water spraying directional blocking and width measuring instrument on the outlet side of the rolling mill according to claim 1, wherein the diversion recovery mechanism in the step S2 is arranged below the directional blocking mechanism and comprises a diversion trench, a filtering component and a backflow water pipe, the diversion trench is of an inclined structure, the inclination angle is 5-10 degrees, the filtering component is arranged at the tail end of the diversion trench, one end of the backflow water pipe is connected with the filtering component, and the other end of the backflow water pipe is connected with the circulating water system of the rolling mill.
7. The method for directionally blocking water spray on the outlet side of a rolling mill and guaranteeing precision of a width gauge according to claim 6, wherein the filtering component comprises a coarse filter screen and a fine filter screen, the pore diameter of the coarse filter screen is 2-3mm, the pore diameter of the fine filter screen is 0.5-1mm, and the filtering component is connected with the diversion trench by bolts.
8. The method for directionally blocking water spraying on the outlet side of a rolling mill and guaranteeing the precision of a width measuring instrument according to claim 1, wherein the telescopic sealing curtain in the step S3 comprises a fixed frame and a movable curtain body, the movable curtain body is made of silicone rubber, the thickness is 2-3mm, the movable curtain body is connected with the fixed frame through a sliding rail, and the telescopic travel is 0-50cm.
9. The method for directionally blocking water spraying on the outlet side of a rolling mill and guaranteeing the precision of a width gauge according to claim 1, wherein the negative pressure air suction component in the step S3 comprises an air suction fan and an air duct, the air quantity of the air suction fan is 1000-1500m 3 /h, sound-absorbing cotton is arranged on the inner wall of the air duct, the thickness of the sound-absorbing cotton is 5-8mm, and the negative pressure air suction component is used for discharging water vapor in a sealed space.
10. The method for directionally blocking water spraying on the outlet side of a rolling mill and guaranteeing the precision of a width gauge according to claim 1, wherein the drying component in the step S3 comprises a dehumidifier, a humidity sensor and a temperature sensor, the dehumidifying amount of the dehumidifier is 0.5-1L/h, the humidity threshold value of the humidity sensor is less than or equal to 50%, the measuring range of the temperature sensor is 0-100 ℃, the precision is +/-0.5 ℃, the dehumidifier is automatically started and stopped according to the temperature and the humidity in a sealed space, and the drying component is used for maintaining the low humidity environment in the sealed space.

Description

Method for directionally blocking water spraying at outlet side of rolling mill and guaranteeing precision of width measuring instrument Technical Field The invention relates to the technical field of steel rolling production equipment, in particular to a method for directionally blocking water spraying at an outlet side of a rolling mill and guaranteeing precision of a width gauge. Background In the steel rolling production process, a descaling device is usually arranged at the outlet side of the rolling mill, and oxide scales on the surface of a rolled piece are removed through high-pressure water spraying, so that the surface quality of the rolled piece is ensured. Meanwhile, in order to monitor the dimensional accuracy of the rolled piece in real time, a width gauge is arranged at the outlet side of the rolling mill, and the width of the rolled piece is detected on line through an optical imaging principle. However, the prior art has the following problems that high-pressure water sprayed by the descaling device is easy to splash, part of water flow can be directly sprayed or drifted to a detection area of the width gauge, so that the lens of the width gauge is polluted and imaging is fuzzy, further, the detection precision is reduced, even the situation of detection data distortion occurs, in addition, the splashed water mist can increase the humidity of the surrounding environment of the width gauge, the electric elements in the width gauge are easy to be damped and damaged during long-term operation, and the equipment maintenance cost and the fault shutdown time are increased. At present, a simple baffle shielding or manual cleaning mode is generally adopted in the industry to solve the problems, but the angle of the baffle is fixed, the baffle cannot be flexibly adjusted according to the descaling water pressure and the change of the rolled piece specification, the blocking effect is limited, the manual cleaning is high in labor intensity, real-time protection cannot be realized, and the problem of interference of the descaling water on the width gauge is still difficult to fundamentally solve. Therefore, a method for precisely blocking the scale removal water and guaranteeing the long-term stable operation of the width measuring instrument is needed to be designed, so that the technical problems that the scale removal water at the outlet of the existing rolling mill is easy to splash to the detection area of the width measuring instrument, the imaging interference of the width measuring instrument is caused, and the detection precision is reduced are solved. Disclosure of Invention Aiming at the problems existing in the prior art, the invention aims to provide a method for directionally blocking water spraying at the outlet side of a rolling mill and guaranteeing the precision of a width gauge. The invention solves the technical problems by adopting a technical scheme that the method for directionally blocking water spraying at the outlet side of a rolling mill and guaranteeing the precision of a width gauge comprises the following steps: S1, before the rolling mill is started, setting an initial angle of a blocking plate of the directional blocking mechanism, the air quantity of the negative pressure air draft assembly and the humidity threshold value of the drying assembly by a central controller; S2, in a real-time blocking stage, when the rolling mill runs, the descaling device sprays high-pressure water to remove scale on the surface of a rolled piece, and the blocking plate adjusts the angle under the control of the central controller according to detection data to guide the splashed descaling water to a diversion recovery mechanism below; s3, in a sealing protection stage, the telescopic sealing curtain automatically opens and closes according to the position of the rolled piece to form a closed space of a detection area of the width gauge; And S4, in the intelligent adjustment stage, an image acquisition module acquires a detection image of the width measuring instrument in real time, an accuracy analysis module calculates a detection error, a central controller automatically adjusts the angle of the blocking plate until the error returns to a normal range if the error exceeds a set threshold value, and a remote communication module uploads equipment operation data to a monitoring platform. Specifically, in step S1, the directional blocking mechanism is disposed above and on two sides of a rolling line between the mill outlet descaling device and the width gauge, the directional blocking mechanism comprises a blocking plate, an angle adjusting assembly and a supporting frame, the blocking plate is of an arc structure, the angle adjusting assembly comprises a driving motor, a transmission gear set and an angle sensor, the angle sensor is mounted on a driving shaft of the re-driving motor, the driving motor controls the rotation shaft to rotate through the transmission gear, the rotation shaf