Hydraulic control system of hot rolling production line

Abstract

The invention provides a hydraulic control system of a hot rolling production line, which relates to the technical field of hot rolling and comprises a hydraulic monitoring module, a hydraulic analysis module, a hydraulic evaluation module and a hydraulic warning module, the hydraulic monitoring module comprises a plurality of monitoring units and is used for numbering the plurality of monitoring units, each single monitoring unit is in network connection with a single hydraulic system, and the plurality of monitoring units are used for monitoring operation parameters of the hydraulic systems and sending monitoring data to the hydraulic analysis unit through a network; the hydraulic analysis unit calculates the equipment failure rate, the equipment abnormity index, the hydraulic oil leakage index and the system control precision according to the monitoring data, calculates the equipment health abnormal value by combining the equipment failure rate, the equipment abnormity index, the hydraulic oil leakage index and the system control precision, and sends the calculated data to the hydraulic evaluation module; and the hydraulic evaluation module evaluates the equipment health abnormal value.

Description

Technical Field

[0001] The invention relates to the technical field of hot rolling, in particular to a hydraulic control system of a hot rolling production line. Background Art

[0002] The hot rolling production line is a vital part of the modern metallurgical industry. It processes steel billets into steel products of various specifications and uses through high-temperature rolling. The hot rolling production line is a highly integrated and automated production process involving multiple key equipment and complex process flows. First of all, the heating furnace is the starting point of the hot rolling production line. Its main function is to heat the steel billet above the recrystallization temperature. This step is crucial for the subsequent rolling process, because only when a certain temperature is reached can the metal undergo plastic deformation without breaking during the rolling process. The heating furnace usually adopts a walking beam heating furnace or a continuous heating furnace. Different types of heating furnaces are selected according to production needs. The advanced heating furnace is equipped with the best combustion control model, which can achieve an efficient and low-consumption heating process.

[0003] The hydraulic control system is an indispensable part of the hot rolling production line. It achieves fine adjustment of the rolling process by precisely controlling the hydraulic actuators. Long-term high-load operation can easily cause problems such as wear of parts and seal failure inside the hydraulic pump, which in turn leads to system failure and affects production efficiency. Due to the complex structure of the hydraulic system, which involves multiple systems such as mechanical, electrical, hydraulic, and pneumatic systems, once a problem occurs, it is difficult and time-consuming to inspect and repair. Summary of the invention

[0004] The present invention provides a hydraulic control system for a hot rolling production line, which has the advantages of real-time synchronous monitoring of multiple hydraulic systems, timely discovering faults and problems in the system, and accurately finding specific faulty equipment based on the monitored problems, quickly locating the fault point, reducing the troubleshooting time, improving the reliability and stability of the equipment, helping to reduce unplanned downtime, improving production efficiency, and reducing the problems of misjudgment and missed judgment, etc.

[0005] A hydraulic control system for a hot rolling production line, comprising a hydraulic monitoring module, a hydraulic analysis module, a hydraulic evaluation module and a hydraulic warning module;

[0006] The hydraulic monitoring module includes multiple monitoring units. The hydraulic monitoring module numbers the multiple monitoring units. Each single monitoring unit is connected to a single hydraulic system through a network. The multiple monitoring units are used to monitor the operating parameters of the hydraulic system and send the monitoring data to the hydraulic analysis unit through the network.

[0007] The hydraulic analysis unit calculates the equipment failure rate, equipment abnormality index, hydraulic oil leakage index, and system control accuracy based on the monitoring data, and calculates the equipment health abnormality value in combination with the equipment failure rate, equipment abnormality index, hydraulic oil leakage index, and system control accuracy. The hydraulic analysis unit sends the calculated data to the hydraulic evaluation module;

[0008] The hydraulic assessment module assesses abnormal values ​​of equipment health and sends signals to the hydraulic warning module based on the assessment results;

[0009] The hydraulic warning module issues an alarm based on the signal.

[0010] The numbers of the multiple monitoring units are: YEjc 1 ,YEjc 2 ,YEjc 3 、···、YEjc n , among which, YEjc 1 Represents the first monitoring unit, which is used to monitor the first hydraulic system. n represents the nth monitoring unit, which is used to monitor the nth hydraulic system, and n represents the total number of monitoring units and the total number of hydraulic systems.

[0011] The monitoring data includes sound data, equipment operation parameter data, hydraulic oil data, and hydraulic position data.

[0012] The expression of the response data is:

[0013] XDsj=zd、zy

[0014] XDsj represents the sound data, zd represents the vibration data in the sound data, and zy represents the noise data in the sound data;

[0015] The expression of equipment operating parameter data is:

[0016] SByx=dy、dl、gl、wd

[0017] SByx represents the equipment operation parameter data, dy represents the voltage data in the equipment operation parameter data, dl represents the current data in the equipment operation parameter data, gl represents the power data in the equipment operation parameter data, and wd represents the temperature data in the equipment operation parameter data;

[0018] The expression of hydraulic oil data is:

[0019] YYys=yl、ll

[0020] YYys represents hydraulic oil data, yl represents pressure data, and ll represents flow data;

[0021] The expression for hydraulic position data is:

[0022] YYwz=cgwz、zlwz

[0023] YYwz represents the hydraulic position data, cgwz represents the actual position data acquired by the position sensor in the hydraulic position data, and zlwz represents the command position data issued by the control system in the hydraulic position data.

[0024] The calculation formula for equipment failure rate is:

[0025]

[0026] SBgz represents the equipment failure rate, It means taking 5 vibration data as a group and calculating the mean value of this group of vibration data. b Represents the standard value of vibration data, It means taking 5 noise data as a group and calculating the mean of this group of noise data. b represents the standard value of noise data, and 2 represents two factors for evaluating the failure rate of equipment.

[0027] The calculation formula of equipment abnormality index is:

[0028]

[0029] In the calculation formula, SByc represents the equipment abnormality index, It represents taking 5 voltage data as a group and calculating the mean value of this group of voltage data, dy b Represents the standard value of voltage, Represents 5 current data as a group, dl b Represents the standard value of current data, It means taking 5 power data as a group and calculating the mean of this group of power data. b Represents the standard value of power data, It represents taking 5 temperature data as a group and calculating the mean of this group of temperature data, wd b represents the standard value of temperature data, and 4 represents the four factors for evaluating the equipment abnormality index.

[0030] The calculation formula of hydraulic oil leakage index is:

[0031] XLzs=(yl s -yl b )*(ll s -ll b )

[0032] XLzs represents the hydraulic oil leakage index, yl s Represents the actual pressure data, ylb Represents standard pressure data, ll s Represents actual traffic data, ll b Represents standard flow data.

[0033] The calculation formula of system control accuracy is:

[0034]

[0035] XXjd represents the system control accuracy, |cgwz-zlwz| represents the difference between the actual position and the command position, and bzc represents the standard deviation between the actual position and the command position.

[0036] The calculation formula for equipment health abnormality is:

[0037] SBj i =(ω 1 ·SBgz)*(ω 2 ·SByc)*(ω 3 ·XLzs)*(ω 4 ·XXjd)

[0038] SBj i represents the abnormal value of the equipment health of the ith monitoring unit, i.e., the ith hydraulic system, ω 1 Represents the weight of the equipment failure rate, ω 2 Represents the weight of the device abnormality index, ω 3 Represents the weight of the hydraulic oil leakage index, ω 4 Represents the weight of the system control accuracy.

[0039] When the equipment health abnormal value is greater than the equipment health threshold, it means that the current equipment is faulty and a signal is sent to the hydraulic warning module.

[0040] Beneficial effects of the invention:

[0041] 1. The present invention achieves the effect of separate monitoring of the hydraulic system by binding multiple monitoring units with multiple hydraulic systems, and synchronously monitors multiple hydraulic systems in real time, promptly discovers faults and problems in the system, and can accurately find specific faulty equipment based on the monitored problems, quickly locate the fault point, and reduce the troubleshooting time.

[0042] 2. The present invention can timely discover potential signs of failure by comprehensively evaluating multiple key parameters of the liquid system, which helps to take preventive measures before the failure occurs to avoid more serious equipment damage and production interruptions. It can help identify and solve problems that may cause equipment failure, thereby improving the reliability and stability of the equipment, helping to reduce unplanned downtime, improve production efficiency, and reduce the problem of misjudgment and missed judgment. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a schematic diagram of the structural system of the present invention. DETAILED DESCRIPTION

[0044] See also Figure 1 , a hydraulic control system for a hot rolling production line, comprising a hydraulic monitoring module, a hydraulic analysis module, a hydraulic evaluation module and a hydraulic warning module;

[0045] The hydraulic monitoring module includes multiple monitoring units. The hydraulic monitoring module numbers the multiple monitoring units. Each single monitoring unit is connected to a single hydraulic system through a network. The multiple monitoring units are used to monitor the operating parameters of the hydraulic system and send the monitoring data to the hydraulic analysis unit through the network.

[0046] The numbers of the multiple monitoring units are: YEjc 1 ,YEjc 2 ,YEjc 3 、···、YEjc n , among which, YEjc 1 Represents the first monitoring unit, which is used to monitor the first hydraulic system. n represents the nth monitoring unit, which is used to monitor the nth hydraulic system, and n represents the total number of monitoring units and the total number of hydraulic systems;

[0047] Bind multiple monitoring units to multiple hydraulic systems to achieve the effect of monitoring the hydraulic system separately, monitor multiple hydraulic systems synchronously in real time, promptly discover faults and problems in the system, and accurately find the specific faulty equipment based on the monitored problems, quickly locate the fault point, and reduce the troubleshooting time;

[0048] Monitoring data includes sound data, equipment operating parameter data, hydraulic oil data, and hydraulic position data;

[0049] The expression of the response data is:

[0050] XDsj=zd、zy

[0051] XDsj represents the sound data, zd represents the vibration data in the sound data, and zy represents the noise data in the sound data;

[0052] The expression of equipment operating parameter data is:

[0053] SByx=dy、dl、gl、wd

[0054] SByx represents the equipment operation parameter data, dy represents the voltage data in the equipment operation parameter data, dl represents the current data in the equipment operation parameter data, gl represents the power data in the equipment operation parameter data, and wd represents the temperature data in the equipment operation parameter data;

[0055] The expression of hydraulic oil data is:

[0056] YYys=yl、ll

[0057] YYys represents hydraulic oil data, yl represents pressure data, and ll represents flow data;

[0058] The expression for hydraulic position data is:

[0059] YYwz=cgwz、zlwz

[0060] YYwz represents hydraulic position data, cgwz represents actual position data acquired by the position sensor in the hydraulic position data, and zlwz represents command position data issued by the control system in the hydraulic position data;

[0061] The hydraulic analysis unit calculates the equipment failure rate, equipment abnormality index, hydraulic oil leakage index, and system control accuracy based on the monitoring data, and calculates the equipment health abnormality value in combination with the equipment failure rate, equipment abnormality index, hydraulic oil leakage index, and system control accuracy. The hydraulic analysis unit sends the calculated data to the hydraulic evaluation module;

[0062] The calculation formula for equipment failure rate is:

[0063]

[0064] SBgz represents the equipment failure rate, It means taking 5 vibration data as a group and calculating the mean value of this group of vibration data. b Represents the standard value of vibration data, It means taking 5 noise data as a group and calculating the mean of this group of noise data. b represents the standard value of noise data, and 2 represents two factors for evaluating the failure rate of equipment;

[0065] By analyzing the equipment failure rate through the sound data, it is possible to detect small abnormal signals in the early stages of the failure. For example, small wear of the bearing, slight poor meshing of the gear and other failures may not have a significant impact on the normal operation of the equipment in the early stages, but these potential problems can be discovered in time through vibration and noise, and preventive maintenance can be carried out to avoid further development of the failure.

[0066] The calculation formula of equipment abnormality index is:

[0067]

[0068] SByc represents the equipment abnormality index, It represents taking 5 voltage data as a group and calculating the mean value of this group of voltage data, dy b Represents the standard value of voltage, Represents 5 current data as a group, dl b Represents the standard value of current data, It means taking 5 power data as a group and calculating the mean of this group of power data. b Represents the standard value of power data, It represents taking 5 temperature data as a group and calculating the mean of this group of temperature data, wd b represents the standard value of temperature data, and 4 represents the four factors for evaluating the equipment abnormality index;

[0069] By calculating the equipment abnormality index through the equipment operation parameter data, abnormal conditions that occur during the operation of hydraulic equipment can be discovered in time. For example, excessive current may indicate motor overload or short circuit, and excessive temperature may mean that the equipment is overheated or has poor heat dissipation. If these abnormal conditions are not handled in time, they may cause equipment damage or shutdown. By analyzing these abnormality indexes, the fault type can be judged more accurately, thereby formulating a more effective maintenance strategy;

[0070] The calculation formula of hydraulic oil leakage index is:

[0071] XLzs=(yl s -yl b )*(ll s -ll b )

[0072] XLzs represents the hydraulic oil leakage index, yl s Represents the actual pressure data, yl b Represents standard pressure data, ll s Represents actual traffic data, ll b Represents standard traffic data;

[0073] Calculating the hydraulic oil leakage index through hydraulic oil data can detect leakage problems in time. For example, when the system pressure drops or the flow rate increases abnormally, it may indicate the presence of a leakage point, which helps to repair the problem before it worsens and avoid more serious equipment damage and production interruptions. By timely detecting and eliminating leakage faults, the number of unplanned equipment shutdowns can be reduced and the operating efficiency of the equipment can be improved, which can not only improve production efficiency, but also reduce maintenance costs and production losses;

[0074] The calculation formula of system control accuracy is:

[0075]

[0076] XXjd represents the system control accuracy, |cgwz-zlwz| represents the difference between the actual position and the command position, and bzc represents the standard deviation between the actual position and the command position;

[0077] Calculating the system control accuracy through hydraulic position data can provide an in-depth understanding of the dynamic characteristics and working status of the hydraulic system, which is helpful for optimizing the design and parameter adjustment of the system to achieve more energy-saving and efficient operation. In the event of a large deviation, intervention can be carried out to avoid further deterioration of the fault, reduce downtime and maintenance costs. At the same time, accurate hydraulic cylinder position control is an important prerequisite for ensuring production safety. By calculating the system control accuracy, potential safety hazards can be discovered and corrected in a timely manner to prevent safety accidents caused by equipment out of control.

[0078] The calculation formula for equipment health abnormality is:

[0079] SBj i =(ω 1 ·SBgz)*(ω 2 ·SByc)*(ω 3 ·XLzs)*(ω 4 ·XXjd)

[0080] SBj i represents the abnormal value of the equipment health of the ith monitoring unit, i.e., the ith hydraulic system, ω 1 Represents the weight of the equipment failure rate, ω 2 Represents the weight of the device abnormality index, ω 3 Represents the weight of the hydraulic oil leakage index, ω 4 Represents the weight of system control accuracy;

[0081] By comprehensively evaluating multiple key parameters of the liquid system, potential signs of failure can be discovered in a timely manner, which helps to take preventive measures before failure occurs, avoid more serious equipment damage and production interruptions, and can help identify and solve problems that may cause equipment failure, thereby improving equipment reliability and stability, helping to reduce unplanned downtime, improve production efficiency, and reduce the problem of misjudgment and missed judgment;

[0082] The hydraulic assessment module evaluates the abnormal value of equipment health. When the abnormal value of equipment health is greater than the equipment health threshold, it means that the current equipment is faulty and sends a signal to the hydraulic warning module; the hydraulic warning module issues an alarm based on the signal.

Claims

1. A hydraulic control system for a hot rolling production line, characterized in that: It includes a hydraulic monitoring module, a hydraulic analysis module, a hydraulic evaluation module and a hydraulic warning module; The hydraulic monitoring module includes multiple monitoring units. The hydraulic monitoring module numbers the multiple monitoring units. Each single monitoring unit is connected to a single hydraulic system through a network. The multiple monitoring units are used to monitor the operating parameters of the hydraulic system and send the monitoring data to the hydraulic analysis unit through the network. The hydraulic analysis unit calculates the equipment failure rate, equipment abnormality index, hydraulic oil leakage index, and system control accuracy based on the monitoring data, and calculates the equipment health abnormality value in combination with the equipment failure rate, equipment abnormality index, hydraulic oil leakage index, and system control accuracy. The hydraulic analysis unit sends the calculated data to the hydraulic evaluation module; The hydraulic assessment module assesses abnormal values ​​of equipment health and sends signals to the hydraulic warning module based on the assessment results; The hydraulic warning module issues an alarm based on the signal.

2. A hydraulic control system for a hot rolling production line according to claim 1, characterized in that: The numbers of the multiple monitoring units are: YEjc 1 ,YEjc 2 ,YEjc 3 、···、YEjc n , among which, YEjc 1 Represents the first monitoring unit, which is used to monitor the first hydraulic system. n represents the nth monitoring unit, which is used to monitor the nth hydraulic system, and n represents the total number of monitoring units and the total number of hydraulic systems.

3. A hydraulic control system for a hot rolling production line according to claim 2, characterized in that: The monitoring data includes sound data, equipment operation parameter data, hydraulic oil data, and hydraulic position data.

4. A hydraulic control system for a hot rolling production line according to claim 3, characterized in that: The expression of the response data is: XDsj=zd、zy XDsj represents the sound data, zd represents the vibration data in the sound data, and zy represents the noise data in the sound data; The expression of equipment operating parameter data is: SByx=dy、dl、gl、wd SByx represents the equipment operation parameter data, dy represents the voltage data in the equipment operation parameter data, dl represents the current data in the equipment operation parameter data, gl represents the power data in the equipment operation parameter data, and wd represents the temperature data in the equipment operation parameter data; The expression of hydraulic oil data is: YYys=yl、ll YYys represents hydraulic oil data, yl represents pressure data, and ll represents flow data; The expression for hydraulic position data is: YYwz=cgwz、zlwz YYwz represents the hydraulic position data, cgwz represents the actual position data acquired by the position sensor in the hydraulic position data, and zlwz represents the command position data issued by the control system in the hydraulic position data.

5. The hydraulic control system of a hot rolling production line according to claim 4, characterized in that: The calculation formula for equipment failure rate is: SBgz represents the equipment failure rate, It means taking 5 vibration data as a group and calculating the mean value of this group of vibration data. b Represents the standard value of vibration data, It means taking 5 noise data as a group and calculating the mean of this group of noise data. b represents the standard value of noise data, and 2 represents two factors for evaluating the failure rate of equipment.

6. A hydraulic control system for a hot rolling production line according to claim 5, characterized in that: The calculation formula of equipment abnormality index is: In the calculation formula, SByc represents the equipment abnormality index, It represents taking 5 voltage data as a group and calculating the mean value of this group of voltage data, dy b Represents the standard value of voltage, Represents 5 current data as a group, dl b Represents the standard value of current data, It means taking 5 power data as a group and calculating the mean of this group of power data. b Represents the standard value of power data, It represents taking 5 temperature data as a group and calculating the mean of this group of temperature data, wd b represents the standard value of temperature data, and 4 represents the four factors for evaluating the equipment abnormality index.

7. A hydraulic control system for a hot rolling production line according to claim 6, characterized in that: The calculation formula of hydraulic oil leakage index is: XLzs=(yl s -yl b )*(ll s -ll b ) XLzs represents the hydraulic oil leakage index, yl s Represents the actual pressure data, yl b Represents standard pressure data, ll s Represents actual traffic data, ll b Represents standard traffic data.

8. The hydraulic control system of a hot rolling production line according to claim 7, characterized in that: The calculation formula of system control accuracy is: XXjd represents the system control accuracy, |cgwz-zlwz| represents the difference between the actual position and the command position, and bzc represents the standard deviation between the actual position and the command position.

9. A hydraulic control system for a hot rolling production line according to claim 8, characterized in that: The calculation formula for equipment health abnormality is: SBjk i =(ω1·SBgz)*(ω2·SByc)*(ω3·XLzs)*(ω4·XXjd) SBj i represents the equipment health abnormality value of the ith monitoring unit, that is, the ith hydraulic system, ω1 represents the weight of the equipment failure rate, ω2 represents the weight of the equipment abnormality index, ω3 represents the weight of the hydraulic oil leakage index, and ω4 represents the weight of the system control accuracy.

10. A hydraulic control system for a hot rolling production line according to claim 9, characterized in that: When the equipment health abnormal value is greater than the equipment health threshold, it means that the current equipment is faulty and a signal is sent to the hydraulic warning module.

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