CN-122007166-A - Intelligent lubrication cooling structure for front tensioning roller of cold rolling mill based on pressure feedback and working method of intelligent lubrication cooling structure

CN122007166ACN 122007166 ACN122007166 ACN 122007166ACN-122007166-A

Abstract

The invention discloses an intelligent lubrication cooling structure of a front tension roller of a cold rolling mill based on pressure feedback and a working method thereof, and relates to the technical field of cold rolling mill equipment, wherein the intelligent lubrication cooling structure comprises a pressure detection module, a lubrication module, a cooling module, a control module, a temperature detection module and an alarm module; the pressure detection module acquires pressure signals of the front tensioning roller bearing in real time, the temperature detection module acquires temperature signals of the bearing and the lubricating medium, the control module analyzes and processes the pressure and temperature signals by adopting a fuzzy PID intelligent control algorithm to generate control instructions to adjust the lubricating medium supply quantity of the lubricating module and the cooling medium supply quantity and temperature of the cooling module, and the alarm module sends out alarm signals when parameters are abnormal. The invention realizes the self-adaptive accurate control of lubrication and cooling, reduces the resource waste, reduces the maintenance cost, prolongs the service life of equipment and improves the production efficiency.

Inventors

YANG TIANLIANG
LIU JUNTAO

Assignees

洛阳泰盟机械制造有限公司

Dates

Publication Date: 20260512
Application Date: 20260109

Claims (9)

1. The intelligent lubrication and cooling structure for the front tensioning roller of the cold rolling mill based on pressure feedback is characterized by comprising the following components: The pressure detection module is used for collecting pressure signals of a tensioning roller bearing seat in front of the cold rolling mill in real time; The lubrication module is used for conveying a lubrication medium to the lubrication part of the front tensioning roller; the cooling module is used for conveying cooling medium to the heating part of the front tensioning roller; The control module is respectively and electrically connected with the pressure detection module, the lubrication module and the cooling module, is internally provided with a preset pressure threshold range and a control algorithm, and is used for receiving the pressure signal transmitted by the pressure detection module, comparing the pressure signal with the preset pressure threshold range, generating a corresponding control instruction through the control algorithm and sending the control instruction to the lubrication module and the cooling module so as to adjust the supply quantity of the lubricating medium, the supply quantity of the cooling medium and the supply temperature.
2. The intelligent lubrication and cooling structure for the front tensioning roller of the cold rolling mill based on pressure feedback of claim 1, wherein the pressure detection module comprises at least two pressure sensors symmetrically arranged on two sides of a bearing seat of the front tensioning roller, and the pressure sensors adopt piezoresistive sensors, and the measuring range of the pressure sensors is 0-50MPa.
3. The intelligent lubrication cooling structure for the front tensioning roller of the cold rolling mill based on pressure feedback is characterized in that the lubrication module comprises a lubrication medium storage tank, a lubrication pump, a flow regulating valve and a lubrication pipeline, wherein the input end of the lubrication pump is communicated with the lubrication medium storage tank, the output end of the lubrication pump is communicated with a lubrication part of the front tensioning roller through the lubrication pipeline, and the flow regulating valve is arranged on the lubrication pipeline and is electrically connected with the control module.
4. The intelligent lubrication cooling structure for the front tensioning roller of the cold rolling mill based on pressure feedback is characterized in that the cooling module comprises a cooling medium storage tank, a cooling pump, a cooler, a temperature regulating valve and a cooling pipeline, wherein the input end of the cooling pump is communicated with the cooling medium storage tank, the output end of the cooling pump is sequentially connected with the cooler and the temperature regulating valve and then is communicated with a heating part of the front tensioning roller through the cooling pipeline, the cooler and the temperature regulating valve are electrically connected with the control module, the cooling medium is industrial purified water, and the cooler adopts a plate type heat exchanger.
5. The intelligent lubrication cooling structure for the front tensioning roller of the cold rolling mill based on pressure feedback, which is disclosed in claim 1, is characterized in that the control module is provided with an analog input module and an analog output module, the analog input module is used for receiving 4-20mA signals of the pressure sensor, the analog output module is used for outputting control signals of 0-10V to the executing element, the control algorithm is a fuzzy PID control algorithm, and the algorithm performs fuzzification treatment on pressure deviation and deviation change rate through fuzzy logic to generate a fuzzy control rule and dynamically adjust PID parameters.
6. The intelligent lubrication and cooling structure for the front tension roller of the cold rolling mill based on pressure feedback of claim 1, further comprising a temperature detection module, wherein the temperature detection module is a temperature sensor and is arranged at a bearing seat of the front tension roller and a lubricating medium output end and is used for collecting temperature signals of a bearing and temperature signals of the lubricating medium in real time and transmitting the temperature signals to a control module, and the control module combines the pressure signals and the temperature signals to generate control instructions.
7. The intelligent lubrication and cooling structure for the front tensioning roller of the cold rolling mill based on pressure feedback according to claim 1, further comprising an alarm module, wherein the alarm module is electrically connected with the control module, and the control module controls the alarm module to send out an audible and visual alarm signal when a pressure signal acquired by the pressure detection module exceeds a preset pressure threshold range or a temperature signal acquired by the temperature detection module exceeds a preset temperature threshold range.
8. A method of operating a system according to any one of claims 1-7, comprising the steps of: s1, initializing a system, wherein a control module sets a preset pressure threshold range, a preset temperature threshold range, parameters of a fuzzy PID control algorithm, an initial lubricating medium supply amount, an initial cooling medium supply amount and a supply temperature; s2, a pressure detection module collects pressure signals of a front tensioning roller bearing seat in real time, a temperature detection module collects bearing temperature and lubricating medium temperature signals in real time, and the collected signals are transmitted to a control module; s3, the control module carries out preprocessing such as filtering, amplifying and the like on the received pressure signal and temperature signal to remove interference signals; S4, the control module compares the preprocessed pressure signal with a preset pressure threshold range, compares the temperature signal with a preset temperature threshold range, and analyzes and calculates pressure deviation and pressure deviation change rate, temperature deviation and temperature deviation change rate through a fuzzy PID control algorithm to generate a lubrication adjustment instruction and a cooling adjustment instruction; S5, the control module sends a lubrication adjusting instruction to the lubrication module, adjusts the opening of the flow adjusting valve so as to change the supply quantity of the lubricating medium, sends a cooling adjusting instruction to the cooling module, and adjusts the running power of the cooler and the opening of the temperature adjusting valve so as to change the supply quantity and the supply temperature of the cooling medium; S6, repeating the steps S2-S5 to realize real-time closed loop intelligent control of lubrication and cooling of the tensioning roller in front of the cold rolling mill, and controlling the alarm module to send an alarm signal if the pressure signal or the temperature signal is detected to exceed the preset threshold range.
9. The intelligent lubrication and cooling structure for a front tensioning roller of a cold rolling mill based on pressure feedback according to claim 1, wherein the method according to claim 8 is characterized in that the specific implementation process of the fuzzy PID control algorithm in step S4 comprises the following steps: S41, determining input variables and output variables, wherein the input variables are pressure deviation e 1 , pressure deviation change rate ec 1 , temperature deviation e 2 and temperature deviation change rate ec 2 , and the output variables are a proportional coefficient Kp, an integral coefficient Ki and a differential coefficient Kd of a PID controller; S42, performing blurring processing on the input variable and the output variable, dividing the argument domain of the input variable and the output variable into five blurring subsets of negative big, negative small, zero, positive small and positive big, and performing blurring mapping by adopting a triangle membership function; S43, constructing a fuzzy control rule base based on expert experience and field actual operation data; S44, adopting a Mamdani reasoning algorithm to reason the fuzzy control rule to obtain a fuzzy set of output variables; And S45, performing deblurring treatment on the fuzzy set of the output variables by adopting a gravity center method to obtain accurate Kp, ki and Kd parameter values, and updating parameters of the PID controller.

Description

Intelligent lubrication cooling structure for front tensioning roller of cold rolling mill based on pressure feedback and working method of intelligent lubrication cooling structure Technical Field The invention relates to the technical field of cold rolling mill equipment, in particular to an intelligent lubrication cooling structure of a front tension roller of a cold rolling mill based on pressure feedback. Background In the production process of the cold rolling mill, the front tension roller is used as a key equipment part and is mainly used for controlling the tension of the strip steel, ensuring the stable running of the strip steel in the rolling process, and the working state of the front tension roller directly influences the rolling quality and the production efficiency of the strip steel. Under the working condition that the front tensioning roller rotates at a high speed and bears large tension, a great amount of friction heat can be generated at a bearing position, meanwhile, friction between the roller surface and strip steel can also cause temperature rise, if effective lubrication and cooling cannot be timely carried out, abnormal change of lubricating oil viscosity and reduction of oil film bearing capacity can be caused, and then faults such as bearing abrasion, roller surface damage and the like are caused, equipment shutdown can be even caused when serious faults occur, maintenance cost is increased, and production progress is influenced. The prior lubrication and cooling system of the front tensioning roller of the cold rolling mill mostly adopts a control mode of fixed parameters, namely continuous supply is carried out according to the preset supply quantity of the lubricating medium, the supply quantity of the cooling medium and the supply temperature, and self-adaptive adjustment cannot be carried out according to the actual working pressure change of the front tensioning roller. However, in the actual rolling process, the variation of parameters such as thickness, material, rolling speed and the like of the strip steel can cause the fluctuation of the tension born by the front tensioning roller, so that the variation of the bearing seat pressure is caused, and the heating condition of the front tensioning roller is changed. When the thickness of the strip steel is reduced or the rolling speed is reduced, the tension of the front tensioning roller is reduced, the pressure of the bearing seat is increased, the friction heating value is obviously increased, at the moment, the fixed lubrication cooling parameters cannot meet the heat dissipation and lubrication requirements, so that equipment is overheated and worn, and when the thickness of the strip steel is reduced or the rolling speed is reduced, the tension is reduced, the pressure is reduced, the heating value is reduced, the waste of lubrication media and cooling media is caused by the fixed lubrication cooling parameters, and meanwhile, the viscosity of the lubrication oil is increased possibly due to excessive cooling, so that the lubrication effect is influenced. Therefore, it is necessary to provide an intelligent lubrication and cooling structure for a front tension roller of a cold rolling mill based on pressure feedback to solve the above problems. Disclosure of Invention The invention aims to solve the problems that fixed lubrication and cooling parameters can cause waste of lubrication medium and cooling medium, and lubrication effect is affected due to increase of viscosity of lubricating oil caused by excessive cooling. The invention adopts the following technical scheme for realizing the purposes: Intelligent lubrication cooling structure of tensioning roller before cold rolling mill based on pressure feedback includes: The pressure detection module is used for collecting pressure signals of a tensioning roller bearing seat in front of the cold rolling mill in real time; The lubrication module is used for conveying a lubrication medium to the lubrication part of the front tensioning roller; the cooling module is used for conveying cooling medium to the heating part of the front tensioning roller; The control module is respectively and electrically connected with the pressure detection module, the lubrication module and the cooling module, is internally provided with a preset pressure threshold range and a control algorithm, and is used for receiving the pressure signal transmitted by the pressure detection module, comparing the pressure signal with the preset pressure threshold range, generating a corresponding control instruction through the control algorithm and sending the control instruction to the lubrication module and the cooling module so as to adjust the supply quantity of the lubricating medium, the supply quantity of the cooling medium and the supply temperature. Further, the pressure detection module comprises at least two pressure sensors which are symmetrically arranged on two sides of the front tensio