CN-122014640-A - Operation control and scheduling method for vortex pool pump group

CN122014640ACN 122014640 ACN122014640 ACN 122014640ACN-122014640-A

Abstract

The application provides an operation control and scheduling method of a vortex pool pump set, belonging to the technical field of metallurgical equipment automation control, comprising the following steps of S1, multidimensional data acquisition and persistent storage; S2, building a pump set working condition evaluation model, S3, executing an intelligent scheduling strategy, S4, carrying out self-adaptive processing on abnormal working conditions, and S5, supporting manual intervention and maintenance decision. The application provides an operation control and scheduling method of a vortex pool pump set, which realizes accurate sensing, balanced scheduling and energy consumption optimization of the operation state of the pump set by constructing a multidimensional working condition assessment model and a multi-objective intelligent scheduling algorithm, effectively improves the operation efficiency and prolongs the service life of equipment, has a full life cycle storage tracing and abnormal self-adaptive processing mechanism of data, supports predictive maintenance and quick fault response, and combines full-automatic intelligent scheduling and manual intervention functions, thereby reducing maintenance cost and unplanned shutdown risk while ensuring operation reliability and continuity.

Inventors

WANG HUAQUAN
DAI XIAOMING
KONG WEIJIAN

Assignees

湖南华菱湘潭钢铁有限公司

Dates

Publication Date: 20260512
Application Date: 20260401

Claims (8)

1. The operation control and scheduling method for the vortex pool pump group is characterized in that the vortex pool is provided with four lifting pumps, each lifting pump corresponds to an independent driving motor, the method is based on a PLC control system and a data acquisition module, integrates pump group operation parameters, motor state parameters and vortex pool liquid level parameters, and realizes the whole-flow intelligent control and scheduling of the pump group through a multidimensional working condition evaluation model and an intelligent scheduling algorithm, and specifically comprises the following five core steps: s1, multidimensional data acquisition and persistent storage, namely, after a control system is started, reading historical running time and starting times of a pump set, and carrying out data statistics according to real-time running data; S2, building a pump set working condition evaluation model, namely calculating an efficiency evaluation index and a health state index of each pump set in real time according to data in the operation of the pump, and giving out comprehensive working condition grades; S3, executing an intelligent scheduling strategy, namely determining the operation quantity and the starting sequence of the pumps according to the intelligent scheduling operation strategy and according to the liquid level height, the change trend and the working condition grade of the pumps; S4, carrying out self-adaptive processing on abnormal working conditions, namely grasping the running condition of the pump set in real time according to an abnormal judgment model, and carrying out sequential adjustment on the pump to form a fault abnormal file; s5, manual intervention and maintenance decision support, namely prompting and recording a time log according to a maintenance threshold value of the running time, and under special conditions, performing manual control and locking.
2. The method for controlling and scheduling operation of a pump set of a cyclone basin according to claim 1, wherein the specific operation in the step S1 is to collect the running flow of each pump, the working current of the motor, the starting response time and the real-time liquid level data of the cyclone basin in real time through a flow sensor, a current sensor and a liquid level sensor, and to store the accumulated running time and the accumulated starting times of each pump, and the accumulated running time and the accumulated starting times of the corresponding motor respectively by using a holding register.
3. The method for controlling and scheduling operation of a whirlpool pump unit according to claim 2, wherein the data stored in the holding register is not lost after restarting the apparatus, and is cleared only by an authorized operation when the pump body or the motor is replaced.
4. The method for controlling and scheduling operation of a whirlpool pump assembly according to claim 1, wherein said step S2 comprises the sub-steps of: s21, calculating the ratio of the actual running flow of the pump to the rated flow, and combining the input power of the motor to obtain the running efficiency of the pump set; s22, a health state index is used for evaluating the running state of the pump set based on the pump starting response time, the flow fluctuation coefficient and the motor current fluctuation coefficient in the running process and combining the historical data threshold; S23, comprehensive working condition grades, namely dividing the operation working condition of each pump into four grades of an optimal working condition, a good working condition, a general working condition and an abnormal working condition by adopting a weighted scoring method according to the efficiency evaluation index and the health state index.
5. The method for controlling and scheduling operation of a cyclone pool pump set according to claim 1, wherein the step S3 specifically includes: the full-automatic optimal scheduling mode is to preferentially screen pump bodies with optimal working conditions and good working conditions to participate in operation, combine the accumulated running time and starting times of the pump and the motor, adopt an equilibrium scheduling algorithm, preferentially schedule the pump body with the shortest accumulated running time and the least starting times, and dynamically adjust the number of the pump groups to operate according to the liquid level change rate of the cyclone tank; setting the upper limit of single continuous operation time of the pump set, and automatically switching to a standby pump with optimal working condition and shortest accumulated operation time when the continuous operation of the single pump reaches the set upper limit; And providing two optional modes of pump body priority scheduling and motor priority scheduling, wherein when the motor priority scheduling is selected, the balance of the accumulated running time and the starting times of the motor is taken as a core target.
6. The method for controlling and scheduling operation of a whirlpool pump assembly according to claim 1, wherein said step S4 comprises the sub-steps of: s41, abnormality identification, namely automatically judging the system as an abnormal working condition when the actual running flow of the pump is lower than 75% of the rated flow, or the working current of the motor exceeds 120% of the rated current, or the starting response time of the pump exceeds 2.5 times of a set threshold value; s42, performing exception handling, namely immediately displaying an exception pump body number, an exception type and fault prompt information on a monitoring picture by the system, minimizing the scheduling priority of the pump, and simultaneously automatically adjusting the operation parameters of the rest pump groups; And S43, fault recording and tracing, namely automatically recording the occurrence time, duration time, related parameter change curves and processing measures of the abnormal working condition to form a fault file.
7. The method for controlling and scheduling operation of a whirlpool pump unit according to claim 6, wherein the pump body with the lowest scheduling priority is started as an emergency standby pump only when the liquid level of the whirlpool reaches the highest early warning value.
8. The method for controlling and scheduling operation of a pump unit of a whirlpool according to claim 1, wherein in the step S5, the system of the pump unit of the whirlpool supports a manual intervention mode, an operator manually adjusts the operation sequence of the pump unit, locks the operation state of the designated pump body through a monitoring interface, and supports personalized configuration of scheduling parameters, including a single continuous operation time upper limit, an operation time deviation threshold, an abnormal condition judgment threshold, and when the accumulated operation time of the pump or the motor reaches a maintenance period, the system automatically prompts offline maintenance information.

Description

Operation control and scheduling method for vortex pool pump group Technical Field The application relates to the technical field of automatic control of metallurgical equipment, in particular to an operation control and scheduling method of a vortex pool pump set. Background In the wide and thick plate steel rolling production process, the cyclone pool is used as a key auxiliary facility and bears important tasks of collecting, temporarily storing and conveying rolling line cooling water, flushing water, rainwater and the like, and whether the water level is stable or not is directly related to the continuity and safety of rolling line operation. The lifting pump set is used as core power equipment of the cyclone pool system and is responsible for timely discharging accumulated water in the pool to a subsequent water treatment system, so that the influence of overflow or overhigh water level on production is avoided. At present, the pump set system mostly adopts an operation mode based on fixed sequence rotation, manual experience scheduling or simple time sequence control in metallurgical enterprises, and lacks systematic, adaptive and intelligent scheduling strategies. The prior art has the main defects of 1) uneven load distribution of a pump group. Most of the systems adopt a simple time rotation or sequential starting mode, and the actual running state, the historical working time, the starting and stopping times and the performance attenuation condition of each pump are not considered, so that part of the pumps run under high load for a long time, abrasion is aggravated, and the standby pumps are idle for a long time and are easy to generate problems of corrosion, jam and the like, so that the reliability of the system is affected. 2) The energy efficiency is not optimized enough. The traditional control method does not combine working condition parameters such as real-time flow, motor current, drainage efficiency and the like to carry out dynamic scheduling, so that the whole energy efficiency of the pump set is difficult to be optimal on the premise of guaranteeing drainage requirements, and energy waste is caused. 3) Status monitoring and early warning lack. The existing system generally does not have a pump performance degradation identification function based on multi-parameter fusion of flow, current and the like, can not judge whether the operation of the pump deviates from a normal working condition in real time, is delayed in abnormal discovery, is slow in maintenance response and is easy to cause fault expansion. 4) Data persistence and decision support are weak. The key data such as the running time, the start-stop times and the like of the pump and the motor are not normally stored in a nonvolatile way, the data are lost after the system is restarted, and predictive maintenance and periodic maintenance planning based on accumulated data cannot be supported. 5) Scheduling flexibility is poor. Under abnormal working conditions (such as pump efficiency reduction, motor overcurrent and the like), the system cannot automatically adjust the scheduling sequence, and the abnormal pump is still called according to the original sequence, so that the drainage efficiency is influenced and the equipment risk is increased. Along with the transformation of the steel industry to intellectualization and greenization, higher requirements are put forward on energy conservation and consumption reduction of a steel rolling production line and fine management of equipment. The existing operation control and scheduling method of the vortex pool pump set has the defects of intelligent degree, operation economy, equipment reliability and the like, and becomes an important factor for restricting the efficient green operation of the wide and thick plate steel rolling production line. Therefore, an operation control and scheduling method capable of realizing accurate evaluation of pump set working conditions, intelligent scheduling optimization, full life cycle management of equipment states and self-adaptive processing of abnormal working conditions is developed, and the method has important engineering application value and practical significance. Disclosure of Invention The present application has been made in view of the above problems, and an object of the present application is to provide a method for controlling and scheduling operation of a cyclone pump set, which solves the problems set forth in the above background art The invention provides a method for controlling and dispatching the operation of a pump set of a cyclone tank, which comprises the steps that the cyclone tank is provided with four lifting pumps, each lifting pump corresponds to an independent driving motor, the method is based on a PLC control system and a data acquisition module, integrates the operation parameters of the pump set, the state parameters of the motor and the liquid level parameters of the cyclone tank, and realizes the whole