Pulp and paper making equipment maintenance management method and system based on industrial internet

Abstract

The present application relates to the technical field of equipment maintenance, in particular to a pulp and paper making equipment maintenance management method and system based on industrial internet, comprising: obtaining equipment number and networking information of each pulp and paper making equipment, the networking information including connected information or unconnected information; selecting all pulp and paper making equipment with connected information from all pulp and paper making equipment according to the networking information of all pulp and paper making equipment, and taking the pulp and paper making equipment with connected information as monitoring objects; sorting all monitoring objects according to the equipment number to obtain equipment collection sequence. The present application can realize real-time collection of running data of each pulp and paper making equipment, so as to understand the working state of the equipment in time and ensure that problems can be found and handled quickly. Moreover, the real-time health characteristics of the monitoring objects can be used to intelligently judge whether there is a maintenance requirement, so as to realize targeted maintenance.

Description

Technical Field

[0001] This invention relates to the field of equipment maintenance technology, specifically to a method and system for maintenance management of pulp and paper equipment based on the Industrial Internet. Background Technology

[0002] Currently, traditional methods often rely on periodic inspections and manual patrols, which cannot obtain real-time equipment operating data. This makes it difficult to detect equipment problems in a timely manner, which may lead to more serious failures. Moreover, due to the lack of real-time assessment of equipment health status, maintenance work is usually carried out based on fixed time intervals. This blind maintenance approach may lead to a waste of resources, including manpower, material resources, and time.

[0003] In addition, traditional methods usually lack a pre-set maintenance strategy library, and maintenance measures are often relatively simple and cannot be flexibly adjusted according to the actual operating conditions of the equipment. This can easily lead to unnecessary downtime or insufficient maintenance. Moreover, in the traditional maintenance process, maintenance instructions and procedures may not be standardized enough, and operators may have different understandings and execution of maintenance tasks, resulting in unsatisfactory maintenance results. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: a maintenance and management method for pulping and papermaking equipment based on the Industrial Internet. The method is applied to an Industrial Internet management platform and is communicatively connected to multiple pulping and papermaking devices. The pulping and papermaking equipment includes a beater, a screening machine, and a conveying system. The method includes: Obtain the equipment number and network information of each pulping and papermaking equipment, including whether it is connected to the network or not. Based on the network information of all pulping and papermaking equipment, select all pulping and papermaking equipment whose network information is already connected, and use these connected equipment as monitoring objects; sort all monitoring objects according to their equipment numbers to obtain the equipment data collection order; Based on a preset industrial communication protocol, the system collects operational data for each monitored object in sequence according to the equipment acquisition order, and obtains the acquisition results, which include real-time vibration data and real-time motor current data for each monitored object. For each monitored object, based on the real-time vibration data and real-time motor current data of the monitored object, the operational health characteristics of the monitored object are generated; based on the operational health characteristics of each monitored object, it is determined whether there is at least one target device that meets the triggering conditions for maintenance management. In response to at least one target device under the trigger condition, the data acquisition operation is stopped, and the target maintenance level corresponding to the target device is determined according to the operational health characteristics of each target device; according to the target maintenance level, the target maintenance strategy corresponding to the target device is matched from the preset strategy library.

[0005] Preferably, the target maintenance strategy includes at least one of a shutdown maintenance strategy and a non-shutdown maintenance strategy; After matching the target maintenance policy corresponding to the target device from a preset policy library according to the target maintenance level, the method includes: Based on the target maintenance strategy and the operational health characteristics of the target equipment, generate maintenance task instructions for the target equipment; Based on industrial communication protocols, corresponding maintenance task instructions are sent to the maintenance terminal corresponding to each target device to achieve precise maintenance management of each target device. Based on the second operating status data sent by each target device for the maintenance operation, the maintenance status of each target device is determined, including maintenance completed status or maintenance in progress status. After confirming that the maintenance status is complete, the maintenance record data of the target equipment is collected. The maintenance record data includes maintenance duration, spare parts replacement information, and post-maintenance trial operation parameters.

[0006] Preferably, based on the operational health characteristics of each monitored object, it is determined whether there is at least one target device that meets the triggering conditions for maintenance management, including: Based on the operational health characteristics of each monitored object, analyze the operating parameters of each monitored object, including vibration amplitude and motor current value; Determine the current maintenance strategy based on the operating parameters of all monitored objects; Determine whether the current maintenance policy is used to indicate that there is a preset maintenance management requirement for at least one monitored object; In response to the current maintenance policy indicating that there is a maintenance management requirement for at least one monitored object, it is determined that there is at least one target device that meets the triggering conditions for performing maintenance management; In response to the current maintenance policy indicating that there is no maintenance management requirement for any monitored object, it is determined that there is no target device that meets the triggering conditions for maintenance management.

[0007] Preferably, the current maintenance strategy is determined based on the operating parameters of all monitored objects, including: Determine whether the vibration amplitude of each monitored object is greater than or equal to the determined amplitude threshold and whether the motor current value is greater than or equal to the determined current threshold; When the vibration amplitude is greater than or equal to the amplitude threshold and the motor current is greater than or equal to the current threshold, it is determined whether the characteristic change rate corresponding to the operating health characteristic meets the determined mutation condition. When the characteristic change rate meets the mutation condition, the current maintenance strategy is determined to be an emergency early warning strategy; When the characteristic change rate does not meet the mutation condition, the current maintenance strategy is determined to be a regular early warning strategy; When the vibration amplitude is less than the amplitude threshold or the motor current is less than the current threshold, the current maintenance strategy is determined to be the normal operation strategy.

[0008] Preferably, a pressure sensor is installed at the inlet of the flow system; Based on the target maintenance strategy and the operational health characteristics of the target equipment, generate maintenance task instructions for the target equipment, including: Determine the first connection relationship between the pulper and the screening machine, and the second connection relationship between the screening machine and the conveying system; Based on the first connection relationship and the second connection relationship, the standard shutdown parameters corresponding to the pulp and paper making equipment are determined. The standard shutdown parameters include the first shutdown sequence, the second shutdown sequence, and the target speed. When the target maintenance strategy includes a shutdown and maintenance strategy, a first deceleration command and a discharge command are generated based on the target rotation speed and the determined target angle. The first deceleration command is used to transport the slurry in the pulper to the screening machine under the monitoring of the pressure sensor, and the discharge command is used to open the discharge valve. After the determined first waiting time, a braking command is generated based on the target rotation speed and the determined braking angle. The braking command is used to control the fly knife of the pulper to perform a braking operation, and the braking angle is greater than the target angle. The idle angle is determined based on the target angle and the braking angle. The idle angle is used to represent the angle difference between the target angle and the braking angle. After the determined second waiting time, a jog command is generated based on the target speed and idling angle. The jog command is used to control the pulper to perform jog operations in the second shutdown sequence.

[0009] Preferably, after collecting operational data from each monitored object sequentially according to a preset industrial communication protocol and the device acquisition sequence, and obtaining the acquisition results, the method further includes: For each monitored object, determine whether real-time vibration data and real-time motor current data sent by the monitored object have been received; In response to receiving real-time vibration data and real-time motor current data sent by the monitored object, the operation is triggered to generate the operational health characteristics of the monitored object based on the real-time vibration data and real-time motor current data of the monitored object. In response to the failure to receive real-time vibration data and motor real-time current data from the monitored object, the monitored object is marked as having abnormal data collection, and the operation based on the preset industrial communication protocol is re-executed to collect operational data from each monitored object in sequence according to the equipment collection order, and the collection results are obtained. Detect the tagging information of all monitored objects, and based on the tagging information of all monitored objects, determine whether the current state of the device's data collection order meets the preset adjustment conditions; When the current state of the device acquisition sequence meets the preset adjustment conditions, the device acquisition sequence is adjusted according to the tagging information of all monitored objects.

[0010] Preferably, the system detects the tagging information of all monitored objects and, based on the tagging information of all monitored objects, determines whether the current state of the device's data acquisition sequence meets preset adjustment conditions, including: Based on the tagging information of all monitored objects, determine whether there is at least one abnormal device among all monitored objects whose tagging information is abnormal for a preset number of continuous collections. When there is at least one abnormal device whose marked information is all abnormal within a continuous number of collections, the current state of the device collection order is determined to meet the preset adjustment conditions. If the tag information of each monitored object has at least one instance that is not an abnormal collection information within the continuous collection count, the current state of the device collection order is determined to be unsatisfactory according to the preset adjustment conditions.

[0011] Preferably, after sending the corresponding maintenance task instruction to the maintenance terminal corresponding to each target device, the method further includes: For each target device, determine whether the second operating status data for maintenance operations sent by the target device has been received; In response to receiving second operational status data sent by the target device, an operation is triggered to determine the maintenance status of each target device based on the second operational status data sent by each target device for maintenance operations. In response to the failure to receive the second operating status data sent by the target device, the operation of sending the corresponding maintenance task instruction to the maintenance terminal corresponding to each target device based on the industrial communication protocol is re-executed until the number of continuous transmissions reaches the preset number of transmissions; If no second operating status data is received from the target device within a preset number of transmissions, the target device is marked as having maintenance anomaly information. This maintenance anomaly information is used as the basis for determining the device acquisition order when performing the next data acquisition operation.

[0012] Preferably, before sending the corresponding maintenance task instruction to the maintenance terminal corresponding to each target device, the method further includes: Detect load fluctuation information of the pulping machine during the current operating cycle; When the load fluctuation information does not include periodic fluctuation characteristics, the control of the pulping and papermaking equipment is to perform a simulated load test operation, and trigger the operation of sending the corresponding maintenance task instruction to the maintenance terminal of each target equipment. The simulated load test operation is used to test the maximum load capacity of the pulper. In response to load fluctuation information including periodic fluctuation characteristics, determine the fluctuation frequency corresponding to the periodic fluctuation characteristics and the current actual output of the pulper; Determine whether the fluctuation frequency matches the actual output; When the fluctuation frequency matches the actual output, the operation of sending the corresponding maintenance task instruction to the maintenance terminal corresponding to each target device is triggered. When the fluctuation frequency does not match the actual output, the control of the pulping and papermaking equipment is to perform a simulated load test operation, and trigger the operation of sending the corresponding maintenance task instruction to the maintenance terminal of each target equipment.

[0013] The industrial internet-based pulp and paper equipment maintenance management system, applicable to the aforementioned industrial internet-based pulp and paper equipment maintenance management method, includes: The industrial interconnection unit is used to obtain the equipment number and network information of each pulp and paper making equipment, including whether it is connected to the network or not. The equipment monitoring unit is used to select all pulp and paper making equipment with network information as connected, based on the network information of all pulp and paper making equipment, and to designate the connected pulp and paper making equipment as monitoring objects; and to sort all monitoring objects according to their equipment numbers to obtain the equipment acquisition order. The data acquisition unit is used to collect operational data from each monitored object sequentially according to the equipment acquisition sequence based on a preset industrial communication protocol, and obtain the acquisition results, which include real-time vibration data and real-time motor current data of each monitored object. The health detection unit is used to generate operational health characteristics of each monitored object based on the real-time vibration data and real-time motor current data of the monitored object; and to determine whether there is at least one target device that meets the triggering conditions for maintenance management based on the operational health characteristics of each monitored object. The equipment maintenance unit is used to stop performing data acquisition operations in response to at least one target device under a triggering condition, and to determine the target maintenance level corresponding to the target device based on the operational health characteristics of each target device; and to match the target maintenance strategy corresponding to the target device from a preset strategy library based on the target maintenance level.

[0014] Compared with the prior art, the beneficial effects of the present invention are: (1) By collecting the operating data of each pulping and papermaking equipment in real time, the present invention can understand the working status of the equipment in a timely manner, ensuring that problems can be quickly discovered and dealt with. Moreover, by monitoring the real-time health characteristics of the object, it can intelligently determine whether there is a maintenance need, thereby achieving targeted maintenance, avoiding the waste of resources caused by blind maintenance. Furthermore, through the preset maintenance strategy library, the system can flexibly match the maintenance strategy suitable for the target equipment, including shutdown inspection and non-shutdown maintenance, effectively improving maintenance efficiency and reducing production downtime. (2) By generating specific maintenance task instructions based on the detected maintenance needs, this invention ensures the standardization and effectiveness of the maintenance process, enabling operators to better perform maintenance tasks. Moreover, after maintenance is completed, the system will automatically record the maintenance duration, spare parts replacement information and trial operation parameters to form a good maintenance record. Furthermore, by analyzing the load fluctuation information, simulated load tests can be performed to confirm the maximum load capacity of the equipment, ensuring that the equipment operates within a safe range and reducing the risk of failure. Attached Figure Description

[0015] Figure 1 This is a schematic flowchart of the overall method in one embodiment of the present invention; Figure 2 This is a schematic diagram of the overall system architecture in one embodiment of the present invention.

[0016] In the diagram: 1. Industrial Internet Unit; 2. Equipment Monitoring Unit; 3. Data Acquisition Unit; 4. Health Monitoring Unit; 5. Equipment Maintenance Unit. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Example 1, please refer to Figure 1 This invention provides a technical solution: a maintenance and management method for pulping and papermaking equipment based on the Industrial Internet. The method is applied to an Industrial Internet management platform and communicates with multiple pulping and papermaking devices, including a pulper, a screening machine, and a conveying system. The method includes: S1. Obtain the equipment number and network information of each pulping and papermaking equipment, including whether it is connected to the network or not; S2. Based on the network information of all pulping and papermaking equipment, select all pulping and papermaking equipment whose network information is already connected, and use these connected equipment as monitoring objects; sort all monitoring objects according to their equipment numbers to obtain the equipment data collection order; S3. Based on the preset industrial communication protocol, according to the equipment acquisition sequence, the operation data of each monitored object is collected in sequence to obtain the acquisition results. The acquisition results include the real-time vibration data and the real-time current data of the motor of each monitored object. S4. For each monitored object, generate operational health characteristics of the monitored object based on the real-time vibration data and real-time motor current data of the monitored object; based on the operational health characteristics of each monitored object, determine whether there is at least one target device that meets the triggering conditions for maintenance management. S5. In response to at least one target device under the trigger condition, stop performing data acquisition operations and determine the target maintenance level corresponding to the target device based on the operational health characteristics of each target device; based on the target maintenance level, match the target maintenance strategy corresponding to the target device from the preset strategy library.

[0019] It should be noted that the equipment numbers and network information of all pulping and papermaking equipment (such as pulpers, screening machines, and flow systems) should be obtained; the network information status can be "connected" or "not connected". This step ensures that the system can identify which equipment is online and which is offline. After acquiring the device information, the system will filter out all "connected" devices and use these devices as monitoring targets; this means that only those online devices will be included in the scope of real-time monitoring. The monitored objects are sorted according to their device numbers to form a device acquisition sequence. This process helps ensure that subsequent data acquisition is carried out in an orderly manner, thereby avoiding chaos. Based on a preset industrial communication protocol, the system collects operational data for each monitored object in sequence according to the previously determined acquisition sequence. The collected data includes real-time vibration data and motor current data of each device, which are crucial for analyzing the working status of the equipment. By analyzing the collected real-time data, the system generates operational health characteristics for each monitored object. These characteristics are used to assess the current operating status of the equipment and help identify potential faults. Based on the operational health characteristics of the monitored object, the system determines whether there are triggering conditions that meet maintenance and management requirements. If at least one target device is found to meet maintenance requirements, the system will take corresponding measures. Once the triggering condition is met, the system will stop collecting data to reduce unnecessary resource consumption; based on the target device's operational health characteristics, its corresponding target maintenance level will be determined; this level will guide subsequent maintenance decisions; and a suitable maintenance strategy for the target device will be matched from the preset strategy library to ensure the effectiveness and relevance of subsequent maintenance work.

[0020] In one optional embodiment, the target maintenance strategy includes at least one of a shutdown maintenance strategy and a non-shutdown maintenance strategy; After matching the target maintenance policy corresponding to the target device from a preset policy library according to the target maintenance level, the method includes: Based on the target maintenance strategy and the operational health characteristics of the target equipment, generate maintenance task instructions for the target equipment; Based on industrial communication protocols, corresponding maintenance task instructions are sent to the maintenance terminal corresponding to each target device to achieve precise maintenance management of each target device. Based on the second operating status data sent by each target device for the maintenance operation, the maintenance status of each target device is determined, including maintenance completed status or maintenance in progress status. After confirming that the maintenance status is complete, the maintenance record data of the target equipment is collected. The maintenance record data includes maintenance duration, spare parts replacement information, and post-maintenance trial operation parameters.

[0021] It should be noted that target maintenance strategies can be divided into two types: shutdown maintenance strategies and non-shutdown maintenance strategies. Shutdown maintenance strategies are usually applicable when equipment needs to be shut down for large-scale maintenance, while non-shutdown maintenance strategies are for routine maintenance performed on equipment while it is in operation. The choice between these two strategies depends on the health status of the equipment and its maintenance level. Once a suitable maintenance strategy for the target device is matched from the preset strategy library, the system will generate specific maintenance task instructions based on the strategy and the target device's operational health characteristics. These instructions will clearly indicate the maintenance operations that need to be performed, such as replacing parts, adjusting parameters, or cleaning. Based on industrial communication protocols, the system sends the generated maintenance task instructions to the maintenance terminal corresponding to each target device; this process ensures that maintenance personnel or automated systems can accurately understand and execute maintenance tasks, thereby improving the efficiency and accuracy of maintenance. After receiving the maintenance task instruction, each target device will perform the corresponding maintenance operation and send the second operating status data to the system. This data is used to determine the maintenance status of each device, which mainly consists of two statuses: maintenance completed (indicating that the maintenance task has been successfully executed) and maintenance in progress (indicating that the maintenance task is in progress). Once the maintenance status is determined to be "maintenance complete," the system will collect maintenance record data from the target equipment. This data includes maintenance duration (i.e., the time spent completing the maintenance), replacement parts information (such as which parts were replaced and their models), and post-maintenance trial operation parameters (such as various key performance indicators of the equipment after maintenance). These records are helpful for subsequent maintenance analysis, experience accumulation, and optimization of maintenance strategies.

[0022] In an optional embodiment, determining whether there is at least one target device that meets the triggering conditions for maintenance management based on the operational health characteristics of each monitored object includes: Based on the operational health characteristics of each monitored object, analyze the operating parameters of each monitored object, including vibration amplitude and motor current value; Determine the current maintenance strategy based on the operating parameters of all monitored objects; Determine whether the current maintenance policy is used to indicate that there is a preset maintenance management requirement for at least one monitored object; In response to the current maintenance policy indicating that there is a maintenance management requirement for at least one monitored object, it is determined that there is at least one target device that meets the triggering conditions for performing maintenance management; In response to the current maintenance policy indicating that there is no maintenance management requirement for any monitored object, it is determined that there is no target device that meets the triggering conditions for maintenance management.

[0023] It should be noted that, based on the operational health characteristics of each monitored object, their operating parameters are analyzed. Operating parameters typically include vibration amplitude and motor current. Vibration amplitude can reflect the mechanical condition of the equipment, and excessively high vibration amplitude may indicate a malfunction. Motor current can be used to assess the motor's load and operating efficiency, and abnormal current values ​​may also indicate a problem with the equipment. After analyzing the operating parameters of all monitored objects, the system will determine the current maintenance strategy based on this information; the maintenance strategy refers to the maintenance plan or scheme formulated based on the operating status of the equipment and industry standards or historical data; Determine whether the current maintenance strategy has a preset maintenance management requirement for at least one monitored object; this means that if the operating parameters of a monitored object are outside the normal range and the current maintenance strategy can identify this requirement, then the device is considered to need maintenance management. If the current maintenance strategy is determined to require maintenance management for at least one monitored object, the system will identify at least one target device that meets the triggering conditions for maintenance management; these target devices refer to those that need to be inspected or maintained due to their poor operating condition. If the current maintenance strategy determines that none of the monitored objects have maintenance management requirements, the system will determine that there are no target devices that meet the triggering conditions for maintenance management; this indicates that the operating status of all devices is within the normal range and does not require maintenance.

[0024] In an optional embodiment, the current maintenance strategy is determined based on the operating parameters of all monitored objects, including: Determine whether the vibration amplitude of each monitored object is greater than or equal to the determined amplitude threshold and whether the motor current value is greater than or equal to the determined current threshold; When the vibration amplitude is greater than or equal to the amplitude threshold and the motor current is greater than or equal to the current threshold, it is determined whether the characteristic change rate corresponding to the operating health characteristic meets the determined mutation condition. When the characteristic change rate meets the mutation condition, the current maintenance strategy is determined to be an emergency early warning strategy; When the characteristic change rate does not meet the mutation condition, the current maintenance strategy is determined to be a regular early warning strategy; When the vibration amplitude is less than the amplitude threshold or the motor current is less than the current threshold, the current maintenance strategy is determined to be the normal operation strategy.

[0025] It should be noted that the vibration amplitude and motor current value of each monitored object are checked; the vibration amplitude and motor current value are compared with the preset thresholds respectively; the thresholds for vibration amplitude and motor current value are usually determined through historical data analysis or industry standards, and are used to identify whether the equipment is in normal working condition. If the vibration amplitude of a monitored object is greater than or equal to the set amplitude threshold, and the motor current value is also greater than or equal to the set current threshold, the system will further determine the characteristic change rate corresponding to the operational health characteristics of the monitored object; the characteristic change rate usually refers to the degree of change of the health indicators or performance indicators of the monitored object within a certain period of time. If the characteristic change rate meets the preset mutation condition, the system will determine the current maintenance strategy as "emergency warning strategy"; this indicates that the equipment status has changed significantly, there may be a risk of failure, and immediate action is required for maintenance or other emergency measures. If the characteristic rate of change does not meet the abrupt change condition, even though the vibration and current exceed the normal range, the change is not drastic, and the system will determine the current maintenance strategy as a "routine early warning strategy"; this means that there is a potential problem with the equipment that needs attention, but no immediate emergency measures are required. If the vibration amplitude is less than the amplitude threshold or the motor current is less than the current threshold, it indicates that the equipment is operating normally, and the system will determine the current maintenance strategy as "normal operation strategy". This means that the equipment is in normal working condition and there is no need to worry about maintenance or repair.

[0026] In an alternative embodiment, a pressure sensor is provided at the inlet of the flow system; Based on the target maintenance strategy and the operational health characteristics of the target equipment, generate maintenance task instructions for the target equipment, including: Determine the first connection relationship between the pulper and the screening machine, and the second connection relationship between the screening machine and the conveying system; Based on the first connection relationship and the second connection relationship, the standard shutdown parameters corresponding to the pulp and paper making equipment are determined. The standard shutdown parameters include the first shutdown sequence, the second shutdown sequence, and the target speed. When the target maintenance strategy includes a shutdown and maintenance strategy, a first deceleration command and a discharge command are generated based on the target rotation speed and the determined target angle. The first deceleration command is used to transport the slurry in the pulper to the screening machine under the monitoring of the pressure sensor, and the discharge command is used to open the discharge valve. After the determined first waiting time, a braking command is generated based on the target rotation speed and the determined braking angle. The braking command is used to control the fly knife of the pulper to perform a braking operation, and the braking angle is greater than the target angle. The idle angle is determined based on the target angle and the braking angle. The idle angle is used to represent the angle difference between the target angle and the braking angle. After the determined second waiting time, a jog command is generated based on the target speed and idling angle. The jog command is used to control the pulper to perform jog operations in the second shutdown sequence.

[0027] It should be noted that a pressure sensor is installed at the inlet of the flow system to monitor the pressure of the slurry in real time. This sensor can help determine the flow state of the slurry and its operation in the system, thereby providing necessary data support for subsequent maintenance tasks. When generating maintenance task instructions, the system first needs to clarify the connection relationships between the equipment, namely the primary connection relationship between the pulper and the screening machine, and the secondary connection relationship between the screening machine and the conveying system; these connection relationships help to understand the working process and interaction of the equipment, ensuring that maintenance operations are carried out smoothly. Based on the above connections, the system will determine the standard shutdown parameters for the pulp and paper making equipment. These parameters include the first shutdown sequence, the second shutdown sequence, and the target speed. The standard shutdown parameters are crucial for ensuring the safe and effective shutdown of the equipment and can guide maintenance personnel or the system to automate the shutdown operation. If the target maintenance strategy includes a shutdown and maintenance strategy, the system will generate a first deceleration command and a discharge command when performing maintenance tasks. The first deceleration command is used to control the pulper to gradually reduce its speed so that the pulp can be monitored by the pressure sensor and delivered to the screening machine. The discharge command is used to open the discharge valve to discharge the pulp. This process ensures the safe shutdown of the equipment and reduces damage to the equipment. After issuing the first deceleration command and completing the deceleration, the system will set a first waiting time to ensure smooth pulp delivery. After that, the system will generate a braking command based on the target rotation speed and the determined braking angle. This command is used to control the fly knife of the pulper to perform the braking operation and ensure that the braking angle is greater than the target angle to achieve effective braking. The idle angle is defined as the difference between the target angle and the braking angle; this parameter indicates the relationship between the actual motion state of the equipment and the expected stopping state during braking, which helps in further operational control. After a predetermined second waiting period, the system will generate a jog command based on the target rotation speed and idling angle. The jog command is used to control the pulper to perform jog operations according to the second shutdown sequence, so as to accurately adjust the position or status of the equipment during the shutdown process, ensure the safe shutdown of the equipment, and prepare for subsequent maintenance.

[0028] In an optional embodiment, after collecting operational data from each monitored object sequentially according to a preset industrial communication protocol and the device acquisition sequence, and obtaining the acquisition results, the method further includes: For each monitored object, determine whether real-time vibration data and real-time motor current data sent by the monitored object have been received; In response to receiving real-time vibration data and real-time motor current data sent by the monitored object, the operation is triggered to generate the operational health characteristics of the monitored object based on the real-time vibration data and real-time motor current data of the monitored object. In response to the failure to receive real-time vibration data and motor real-time current data from the monitored object, the monitored object is marked as having abnormal data collection, and the operation based on the preset industrial communication protocol is re-executed to collect operational data from each monitored object in sequence according to the equipment collection order, and the collection results are obtained. Detect the tagging information of all monitored objects, and based on the tagging information of all monitored objects, determine whether the current state of the device's data collection order meets the preset adjustment conditions; When the current state of the device acquisition sequence meets the preset adjustment conditions, the device acquisition sequence is adjusted according to the tagging information of all monitored objects.

[0029] It should be noted that, in accordance with the preset industrial communication protocol and the data collection sequence of the devices, the system collects operational data for each monitored object. This process ensures that the system can obtain the current working status data of each device, providing a basis for subsequent analysis and judgment. After the data collection results are obtained, the system will check whether it has successfully received the real-time vibration data and motor real-time current data sent by each monitored object; this step is an important link to ensure that the monitored object can operate normally and provide real-time feedback. If the system successfully receives real-time vibration data and motor current data, the system will trigger the execution of operations for the monitored object. These operations include generating operational health characteristics of the monitored object based on the received real-time data. Health characteristics typically involve information such as equipment performance indicators and fault prediction, which are key bases for assessing equipment status. If real-time vibration data and motor current data of a certain monitored object are not received, the system will mark the monitored object as "acquisition abnormal"; this means that there may be a communication failure or a problem with the equipment itself; then, the system will re-execute the data acquisition operation and continue to collect the operating data of all monitored objects in sequence according to the preset industrial communication protocol to ensure that a complete dataset is obtained. After data collection is completed, the system will check the tagging information of all monitored objects. By analyzing this tagging information, the system can determine whether the current state of the device collection sequence meets the preset adjustment conditions. For example, possible adjustment conditions include the abnormal state of some monitored objects exceeding the threshold, or the integrity of data collection being affected. If the current state of the device's data acquisition sequence meets the preset adjustment conditions, the system will adjust the device's data acquisition sequence accordingly; this adjustment may be to respond more efficiently to abnormal situations of certain monitored objects.

[0030] In an optional embodiment, detecting the tagging information of all monitored objects and determining whether the current state of the device's data collection order meets preset adjustment conditions based on the tagging information of all monitored objects includes: Based on the tagging information of all monitored objects, determine whether there is at least one abnormal device among all monitored objects whose tagging information is abnormal for a preset number of continuous collections. When there is at least one abnormal device whose marked information is all abnormal within a continuous number of collections, the current state of the device collection order is determined to meet the preset adjustment conditions. If the tag information of each monitored object has at least one instance that is not an abnormal collection information within the continuous collection count, the current state of the device collection order is determined to be unsatisfactory according to the preset adjustment conditions.

[0031] It should be noted that the tagging information of all monitored objects is checked to determine their operating status; this tagging information refers to the status of each monitored object recorded by the system during the data acquisition process, such as whether it is working normally or whether there is an acquisition anomaly. Based on the marking information of all monitored objects, determine whether at least one monitored object is marked as "collection abnormal" within the preset number of continuous collections; here, "number of continuous collections" refers to the number of times data is collected consecutively within the set time frame; if at least one monitored object continuously displays an abnormal state during these collections, the object is considered an abnormal device. If an abnormal device is found during the detection (i.e., the device fails to collect data within a preset number of consecutive collections), the system will determine that the current state of the device collection order meets the preset adjustment conditions. This means that since some devices have failed to collect data normally, the collection order may need to be adjusted to prioritize the processing of these abnormal devices, thereby ensuring the normal operation of the overall system. If each monitored object has at least one instance of information that is not marked as an abnormal acquisition (i.e., normal data exists) within the continuous acquisition count, the system will determine that the current state of the device acquisition order does not meet the preset adjustment conditions; this indicates that although some monitored objects may have experienced abnormalities at certain times, they are generally working normally, so there is no need to adjust the acquisition order.

[0032] In an optional embodiment, after sending the corresponding maintenance task instruction to the maintenance terminal corresponding to each target device, the method further includes: For each target device, determine whether the second operating status data for maintenance operations sent by the target device has been received; In response to receiving second operational status data sent by the target device, an operation is triggered to determine the maintenance status of each target device based on the second operational status data sent by each target device for maintenance operations. In response to the failure to receive the second operating status data sent by the target device, the operation of sending the corresponding maintenance task instruction to the maintenance terminal corresponding to each target device based on the industrial communication protocol is re-executed until the number of continuous transmissions reaches the preset number of transmissions; If no second operating status data is received from the target device within a preset number of transmissions, the target device is marked as having maintenance anomaly information. This maintenance anomaly information is used as the basis for determining the device acquisition order when performing the next data acquisition operation.

[0033] It should be noted that maintenance task instructions are sent to the maintenance terminal corresponding to each target device; these instructions may involve maintenance operations on the device, such as inspection, repair, or replacement; this step is a prerequisite for starting the maintenance process. After sending the maintenance task instruction, the system will determine whether it has successfully received the "second operating status data" sent by the target device; this data is usually the feedback information of the device after performing the maintenance task, which is used to reflect the current operating status of the device. When the second operational status data sent by the target device is received, an execution operation will be triggered. This operation will analyze the data to determine the maintenance status of each target device. The maintenance status can help maintenance personnel understand whether the equipment is operating normally as expected, or whether there are any problems that need to be further addressed. If the second operating status data sent by the target device is not received, the system will re-execute the operation of sending maintenance task instructions to the maintenance terminal corresponding to each target device; this process will be based on a preset industrial communication protocol and will continue until the preset number of transmissions is reached; this means that the system will continuously try to ensure that the maintenance instructions can be successfully received by the target device. If the second operating status data of the target device is not received within the preset number of transmissions, the system will mark the target device as "maintenance anomaly information". This mark is very important because it will be used as the basis for determining the device acquisition order in the next data acquisition operation. This means that in future data acquisition processes, these devices marked as maintenance anomalies may be processed with priority.

[0034] In an optional embodiment, before sending the corresponding maintenance task instruction to the maintenance terminal corresponding to each target device, the method further includes: Detect load fluctuation information of the pulping machine during the current operating cycle; When the load fluctuation information does not include periodic fluctuation characteristics, the control of the pulping and papermaking equipment is to perform a simulated load test operation, and trigger the operation of sending the corresponding maintenance task instruction to the maintenance terminal of each target equipment. The simulated load test operation is used to test the maximum load capacity of the pulper. In response to load fluctuation information including periodic fluctuation characteristics, determine the fluctuation frequency corresponding to the periodic fluctuation characteristics and the current actual output of the pulper; Determine whether the fluctuation frequency matches the actual output; When the fluctuation frequency matches the actual output, the operation of sending the corresponding maintenance task instruction to the maintenance terminal corresponding to each target device is triggered. When the fluctuation frequency does not match the actual output, the control of the pulping and papermaking equipment is to perform a simulated load test operation, and trigger the operation of sending the corresponding maintenance task instruction to the maintenance terminal of each target equipment.

[0035] It should be noted that before starting the maintenance task, the system will first detect the load fluctuation information of the pulper during the current operating cycle; this information can include the load changes that the equipment bears during operation, which helps to determine the operating status of the equipment. If the detected load fluctuation information does not show periodic fluctuation characteristics, it indicates that the equipment may be operating abnormally. In this case, the system will control the pulp and paper equipment to perform a "simulated load test" to evaluate the maximum load capacity of the pulper. This test can help discover potential problems with the equipment. After performing the simulated load test, the system will trigger the sending of corresponding maintenance task instructions to the maintenance terminal of each target device; this step ensures that the necessary checks and maintenance are performed on the device before confirming its performance. If the load fluctuation information contains periodic fluctuation characteristics, the system will further analyze these characteristics to determine their corresponding fluctuation frequencies and calculate the current actual output of the pulper; periodic fluctuation characteristics usually indicate the regular operation of the equipment under normal working conditions, such as the operating frequency of certain mechanical parts, etc. Verify whether the fluctuation frequency determined above matches the actual output of the pulping machine; if they match, it means the equipment is within the normal operating range and you can proceed to the next step. If the fluctuation frequency matches the actual output, the system will trigger the sending of the corresponding maintenance task instruction to the maintenance terminal of each target device; this indicates that the equipment is in normal working condition and can continue to be executed according to the predetermined maintenance plan. If the fluctuation frequency does not match the actual output, it usually indicates that the equipment may be malfunctioning or operating unstablely. In this case, the system will also control the pulp and paper equipment to perform a simulated load test to further evaluate the equipment performance, and then trigger the sending of maintenance task instructions to the maintenance terminal corresponding to each target equipment. The purpose of this is to ensure that the equipment is maintained in a timely manner when an anomaly is detected, so as to avoid potential failure expansion.

[0036] Example 2, please refer to Figure 2 This invention provides a technical solution: a maintenance and management system for pulp and paper equipment based on the Industrial Internet, applicable to the aforementioned maintenance and management method for pulp and paper equipment based on the Industrial Internet, comprising: Industrial Internet Unit 1 is used to obtain the equipment number and network information of each pulp and paper making equipment, including whether it is connected to the network or not. Equipment monitoring unit 2 is used to select all pulp and paper making equipment with network information as connected based on the network information of all pulp and paper making equipment, and to use the connected pulp and paper making equipment as monitoring objects; and to sort all monitoring objects according to the equipment number of all monitoring objects to obtain the equipment acquisition order; The data acquisition unit 3 is used to collect operational data from each monitored object sequentially according to the equipment acquisition sequence based on a preset industrial communication protocol, and obtain the acquisition results, which include real-time vibration data and real-time motor current data of each monitored object. The health detection unit 4 is used to generate operational health characteristics of each monitored object based on the real-time vibration data and real-time motor current data of the monitored object; and to determine whether there is at least one target device that meets the triggering conditions for maintenance management based on the operational health characteristics of each monitored object. The equipment maintenance unit 5 is used to stop performing data acquisition operations in response to at least one target device under the triggering condition, and to determine the target maintenance level corresponding to the target device based on the operational health characteristics of each target device; and to match the target maintenance strategy corresponding to the target device from the preset strategy library according to the target maintenance level.

[0037] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A maintenance and management method for pulp and paper equipment based on the Industrial Internet, characterized in that, The method is applied to an industrial internet management platform and communicates with multiple pulping and papermaking equipment. The pulping and papermaking equipment includes a beater, a screening machine, and a conveying system. A pressure sensor is installed at the inlet of the conveying system. The method includes: Obtain the equipment number and network information of each pulping and papermaking equipment, including whether it is connected to the network or not. Based on the network information of all pulping and papermaking equipment, select all pulping and papermaking equipment whose network information is already connected, and use these connected equipment as monitoring objects; sort all monitoring objects according to their equipment numbers to obtain the equipment data collection order; Based on a preset industrial communication protocol, the system collects operational data for each monitored object in sequence according to the equipment acquisition order, and obtains the acquisition results, which include real-time vibration data and real-time motor current data for each monitored object. For each monitored object, based on the real-time vibration data and real-time motor current data of the monitored object, the operational health characteristics of the monitored object are generated; based on the operational health characteristics of each monitored object, it is determined whether there is at least one target device that meets the triggering conditions for maintenance management. In response to at least one target device triggering the condition, the data acquisition operation is stopped, and the target maintenance level corresponding to the target device is determined based on the operational health characteristics of each target device; based on the target maintenance level, the target maintenance strategy corresponding to the target device is matched from the preset strategy library; The target maintenance strategy includes at least one of the following: a shutdown maintenance strategy and a non-shutdown maintenance strategy. Based on the target maintenance strategy and the operational health characteristics of the target equipment, generate maintenance task instructions for the target equipment; Based on industrial communication protocols, corresponding maintenance task instructions are sent to the maintenance terminal corresponding to each target device to achieve precise maintenance management of each target device. Based on the second operating status data sent by each target device for the maintenance operation, the maintenance status of each target device is determined, including maintenance completed status or maintenance in progress status. After determining that the maintenance status is completed, the maintenance record data of the target equipment is collected. The maintenance record data includes the maintenance duration, spare parts replacement information, and post-maintenance trial operation parameters. Specifically, based on the target maintenance strategy and the operational health characteristics of the target equipment, maintenance task instructions for the target equipment are generated, including: Determine the first connection relationship between the pulper and the screening machine, and the second connection relationship between the screening machine and the conveying system; Based on the first connection relationship and the second connection relationship, the standard shutdown parameters corresponding to the pulp and paper making equipment are determined. The standard shutdown parameters include the first shutdown sequence, the second shutdown sequence, and the target speed. When the target maintenance strategy includes a shutdown and maintenance strategy, a first deceleration command and a discharge command are generated based on the target rotation speed and the determined target angle. The first deceleration command is used to transport the slurry in the pulper to the screening machine under the monitoring of the pressure sensor, and the discharge command is used to open the discharge valve. After the determined first waiting time, a braking command is generated based on the target rotation speed and the determined braking angle. The braking command is used to control the fly knife of the pulper to perform a braking operation, and the braking angle is greater than the target angle. The idle angle is determined based on the target angle and the braking angle. The idle angle is used to represent the angle difference between the target angle and the braking angle. After the determined second waiting time, a jog command is generated based on the target speed and idling angle. The jog command is used to control the pulper to perform jog operations along the second shutdown sequence. Before sending the corresponding maintenance task instruction to the maintenance terminal corresponding to each target device, the method further includes: Detect load fluctuation information of the pulping machine during the current operating cycle; When the load fluctuation information does not include periodic fluctuation characteristics, the control of the pulping and papermaking equipment is to perform a simulated load test operation, and trigger the operation of sending the corresponding maintenance task instruction to the maintenance terminal of each target equipment. The simulated load test operation is used to test the maximum load capacity of the pulper. In response to load fluctuation information including periodic fluctuation characteristics, determine the fluctuation frequency corresponding to the periodic fluctuation characteristics and the current actual output of the pulper; Determine whether the fluctuation frequency matches the actual output; When the fluctuation frequency matches the actual output, the operation of sending the corresponding maintenance task instruction to the maintenance terminal corresponding to each target device is triggered. When the fluctuation frequency does not match the actual output, the control of the pulping and papermaking equipment is to perform a simulated load test operation, and trigger the operation of sending the corresponding maintenance task instruction to the maintenance terminal of each target equipment.

2. The maintenance and management method for pulp and paper equipment based on the Industrial Internet according to claim 1, characterized in that, Based on the operational health characteristics of each monitored object, determine whether there is at least one target device that meets the triggering conditions for maintenance management, including: Based on the operational health characteristics of each monitored object, analyze the operating parameters of each monitored object, including vibration amplitude and motor current value; Determine the current maintenance strategy based on the operating parameters of all monitored objects; Determine whether the current maintenance policy is used to indicate that there is a preset maintenance management requirement for at least one monitored object; In response to the current maintenance policy indicating that there is a maintenance management requirement for at least one monitored object, it is determined that there is at least one target device that meets the triggering conditions for performing maintenance management; In response to the current maintenance policy indicating that there is no maintenance management requirement for any monitored object, it is determined that there is no target device that meets the triggering conditions for maintenance management.

3. The method for maintenance and management of pulp and paper equipment based on the Industrial Internet according to claim 2, characterized in that, Based on the operating parameters of all monitored objects, determine the current maintenance strategy, including: Determine whether the vibration amplitude of each monitored object is greater than or equal to the determined amplitude threshold and whether the motor current value is greater than or equal to the determined current threshold; When the vibration amplitude is greater than or equal to the amplitude threshold and the motor current is greater than or equal to the current threshold, it is determined whether the characteristic change rate corresponding to the operating health characteristic meets the determined mutation condition. When the characteristic change rate meets the mutation condition, the current maintenance strategy is determined to be an emergency early warning strategy; When the characteristic change rate does not meet the mutation condition, the current maintenance strategy is determined to be a regular early warning strategy; When the vibration amplitude is less than the amplitude threshold or the motor current is less than the current threshold, the current maintenance strategy is determined to be the normal operation strategy.

4. The method for maintenance and management of pulp and paper equipment based on the Industrial Internet according to claim 3, characterized in that, Based on a preset industrial communication protocol, and according to the device acquisition sequence, the method sequentially collects operational data from each monitored object. After obtaining the acquisition results, the method further includes: For each monitored object, determine whether real-time vibration data and real-time motor current data sent by the monitored object have been received; In response to receiving real-time vibration data and real-time motor current data sent by the monitored object, the operation is triggered to generate the operational health characteristics of the monitored object based on the real-time vibration data and real-time motor current data of the monitored object. In response to the failure to receive real-time vibration data and motor real-time current data from the monitored object, the monitored object is marked as having abnormal data collection, and the operation based on the preset industrial communication protocol is re-executed to collect operational data from each monitored object in sequence according to the equipment collection order, and the collection results are obtained. Detect the tagging information of all monitored objects, and based on the tagging information of all monitored objects, determine whether the current state of the device's data collection order meets the preset adjustment conditions; When the current state of the device acquisition sequence meets the preset adjustment conditions, the device acquisition sequence is adjusted according to the tagging information of all monitored objects.

5. The method for maintenance and management of pulp and paper equipment based on the Industrial Internet according to claim 4, characterized in that, Detect the tagging information of all monitored objects, and based on the tagging information of all monitored objects, determine whether the current state of the device's data acquisition sequence meets the preset adjustment conditions, including: Based on the tagging information of all monitored objects, determine whether there is at least one abnormal device among all monitored objects whose tagging information is abnormal for a preset number of continuous collections. When there is at least one abnormal device whose marked information is all abnormal within a continuous number of collections, the current state of the device collection order is determined to meet the preset adjustment conditions. If the tag information of each monitored object has at least one instance that is not an abnormal collection information within the continuous collection count, the current state of the device collection order is determined to be unsatisfactory according to the preset adjustment conditions.

6. The maintenance and management method for pulp and paper equipment based on the Industrial Internet according to claim 5, characterized in that, After sending the corresponding maintenance task instruction to the maintenance terminal corresponding to each target device, the method further includes: For each target device, determine whether the second operating status data for maintenance operations sent by the target device has been received; In response to receiving second operational status data sent by the target device, an operation is triggered to determine the maintenance status of each target device based on the second operational status data sent by each target device for maintenance operations. In response to the failure to receive the second operating status data sent by the target device, the operation of sending the corresponding maintenance task instruction to the maintenance terminal corresponding to each target device based on the industrial communication protocol is re-executed until the number of continuous transmissions reaches the preset number of transmissions; If no second operating status data is received from the target device within a preset number of transmissions, the target device is marked as having maintenance anomaly information. This maintenance anomaly information is used as the basis for determining the device acquisition order when performing the next data acquisition operation.

7. A maintenance and management system for pulp and paper equipment based on the Industrial Internet, applicable to the maintenance and management method for pulp and paper equipment based on the Industrial Internet according to any one of claims 1-6, characterized in that, include: The industrial interconnection unit is used to obtain the equipment number and network information of each pulp and paper making equipment, including whether it is connected to the network or not. The equipment monitoring unit is used to select all pulp and paper making equipment with network information as connected, based on the network information of all pulp and paper making equipment, and to designate the connected pulp and paper making equipment as monitoring objects; and to sort all monitoring objects according to their equipment numbers to obtain the equipment acquisition order. The data acquisition unit is used to collect operational data from each monitored object sequentially according to the equipment acquisition sequence based on a preset industrial communication protocol, and obtain the acquisition results, which include real-time vibration data and real-time motor current data of each monitored object. The health detection unit is used to generate operational health characteristics of each monitored object based on the real-time vibration data and real-time motor current data of the monitored object. Based on the operational health characteristics of each monitored object, determine whether there is at least one target device that meets the triggering conditions for maintenance and management; The equipment maintenance unit is used to stop performing data acquisition operations in response to at least one target device under a triggering condition, and to determine the target maintenance level corresponding to the target device based on the operational health characteristics of each target device. Based on the target maintenance level, the target maintenance policy corresponding to the target device is matched from the preset policy library.

Images