CN-121799947-B - Energy consumption collaborative load management system for pneumatic conveying weighing feeding

CN121799947BCN 121799947 BCN121799947 BCN 121799947BCN-121799947-B

Abstract

The invention provides a production energy consumption collaborative load management system for pneumatic conveying weighing feeding, which relates to the technical field of energy consumption collaborative load management and comprises an equipment initialization module, a coefficient construction module and a compensation management module, wherein the equipment initialization module is used for marking a powder pneumatic conveying collaborative control production line as a target production line, acquiring initial production capacity of the target production line, carrying out initialization configuration on operation parameters of operation equipment of the target production line, extracting corresponding adjustment step length of the operation equipment from the initialization configuration after the initialization configuration is finished, thus constructing a plurality of collaborative response coefficients, and the compensation management module is used for determining the abnormal load degree of the target production line according to the energy consumption and the load state of the target production line, judging whether synchronous compensation management is carried out on the operation equipment based on the initialization configuration, so that the system has self-adaptive optimization capability, and can dynamically adjust the control strength under the conditions of fluctuation of working conditions, material property change and pipe network resistance change, and realize balance and stability between the production target and energy consumption control.

Inventors

WU RENHAI
ZHU CONG
XIE QINGWEN
CHEN ZEFENG
CHENG XU

Assignees

福建龙亿粉体装备制造有限公司

Dates

Publication Date: 20260508
Application Date: 20260306

Claims (7)

1. Energy consumption collaborative load management system facing pneumatic conveying weighing feeding, which is characterized by comprising: The equipment initialization module is used for marking the powder pneumatic conveying cooperative control production line as a target production line, acquiring initial capacity of the target production line and carrying out initialization configuration of operation parameters on each operation equipment to which the target production line belongs; the coefficient construction module is used for extracting the adjusting step length corresponding to each operation device from the initialization configuration after the initialization configuration is completed, so as to construct a plurality of cooperative response coefficients; the compensation management module is used for determining the load abnormality degree of the target production line according to the energy consumption and the load state of the target production line and judging whether synchronous compensation management is carried out on each operation device based on the initialization configuration; the cooperative correction module is used for acquiring the variation trend of the abnormal load degree of the continuous period, carrying out trend judgment, and carrying out cooperative correction on the adjustment step length corresponding to each operation device based on trend characteristics and a plurality of cooperative response coefficients so as to realize cooperative load management of capacity and energy consumption; the initialization configuration of the operation parameters of each operation device of the target production line comprises the following specific processes: Reading the preset initial capacity of the target production line, and performing initialization configuration on a plurality of operation devices in the target production line by taking the initial capacity as a core, wherein the operation devices comprise a negative pressure Roots blower, a positive pressure Roots blower, a weighing feeder and an air compensating valve; Based on the initial capacity matching air flow field requirements and material conveying characteristics, initializing variable frequency reference parameters, load control threshold values, pressure reference threshold values and variable frequency adjustment step sizes of the negative pressure Roots blower and the positive pressure Roots blower; Initializing a feeding quantity reference value, a feeding regulation step length and a feeding quantity regulation threshold value linked with a fan load of the weighing feeder based on initial productivity; initializing the basic opening and the opening adjusting step length of the air compensating valve by combining the pipeline resistance characteristics corresponding to the initial production energy; The equipment safety hard constraint of the solidification target production line at least comprises an upper limit of a fan operation load, a pipeline pressure range, a dust removal pressure difference upper limit, a feeding amount adjusting range and a compensating valve opening adjusting range, and the equipment safety hard constraint is used as a control boundary of each operation equipment initialization parameter; the construction of a plurality of cooperative response coefficients comprises the following specific construction processes: Performing ratio processing on the feeding adjustment step length of the weighing feeder and the variable frequency adjustment step length of the negative pressure Roots blower, and marking the processing result as a feeding-negative pressure variable frequency response coefficient; Performing ratio processing on the feeding adjustment step length of the weighing feeder and the variable frequency adjustment step length of the positive pressure Roots blower, and marking the processing result as a feeding-positive pressure variable frequency response coefficient; the frequency conversion regulation step length of the negative pressure Roots blower and the frequency conversion regulation step length of the positive pressure Roots blower are polymerized, the ratio processing is carried out on the polymerization result and the opening regulation step length of the air compensating valve, and the processing result is marked as a frequency conversion-air compensating response coefficient; The judging whether synchronous compensation management is carried out on each operation device based on the initialization configuration or not comprises the following specific judging process: in the operation period, the energy consumption value and the load value of each operation device are obtained in real time, the load values are weighted and aggregated, the load value of the target production line in the operation period is processed by the average value, and the average load value of the target production line is marked; The average load value of the target production line is used for quantifying the load degree of the target production line; Judging whether a first abnormal condition or a second abnormal condition exists in each operation device; the first abnormal condition refers to that the average load value of the target production line is higher than the maximum value of a preset load value reference interval; The second abnormal condition refers to that the average load value of the target production line is lower than the minimum value of a preset load value reference interval; If the first abnormal condition or the second abnormal condition exists in each operation device, synchronous compensation management is needed to be carried out on each operation device based on the initialization configuration, namely, a compensation management strategy is executed on the target production line; If the first abnormal condition and the second abnormal condition do not exist in each operation device, continuously monitoring the energy consumption condition of each operation device, and obtaining the energy consumption value and the load value of each operation device in the next operation period.
2. The energy consumption collaborative load management system for pneumatic conveying weighing feed according to claim 1, wherein the compensation management strategy is executed on a target production line, and the specific process is as follows: If a first abnormal condition exists, reducing a feeding quantity reference value of the current weighing feeder based on a feeding adjustment step length of the current weighing feeder, respectively reducing frequency conversion reference parameters of the negative pressure Roots blower and the positive pressure Roots blower based on frequency conversion adjustment step lengths of the current negative pressure Roots blower and the positive pressure Roots blower, and reducing a basic opening of the air compensating valve based on an opening adjustment step length of the current air compensating valve; If a second abnormal condition exists, increasing a feeding quantity reference value of the current weighing feeder based on a feeding adjustment step length of the current weighing feeder, respectively increasing frequency conversion reference parameters of the negative pressure Roots blower and the positive pressure Roots blower based on frequency conversion adjustment step lengths of the current negative pressure Roots blower and the positive pressure Roots blower, and increasing a basic opening of the air compensating valve based on an opening adjustment step length of the current air compensating valve.
3. The energy consumption collaborative load management system for pneumatic conveying weighing feed according to claim 1, wherein the continuous period of load abnormality degree variation trend is obtained by the following specific processes: If the target production line does not execute the compensation management strategy in a preset continuous plurality of operation periods, continuously monitoring the energy consumption condition of each operation device; Otherwise, acquiring a real-time load value of the target production line in a preset continuous plurality of operation periods; Smoothly connecting a plurality of load values to obtain a load value curve of a target production line; And judging whether to execute a collaborative correction strategy on the target production line or not based on the load value curve of the target production line.
4. The cooperative load management system for energy consumption of pneumatic conveying weighing feed according to claim 3, wherein the determining whether to execute the cooperative correction strategy on the target production line comprises the following specific determining process: Counting the proportion of data in a preset load value reference interval in the load value curve, and marking the proportion as interval matching proportion; comparing the interval matching proportion with a preset definition proportion; If the interval matching proportion is higher than the defined proportion, judging that a cooperative correction strategy is not executed on the target production line, and executing steady-state inhibition regulation on the target production line, wherein the steady-state inhibition regulation comprises small-amplitude correction on at least one of a feeding quantity reference value, a variable frequency reference parameter and a basic opening degree so as to inhibit fluctuation trend of energy consumption and load of the production line; If the interval matching proportion is not higher than the definition proportion, judging that the cooperative correction strategy is executed on the target production line.
5. The pneumatic conveying weigh feed oriented capacity energy consumption collaborative load management system of claim 4, wherein the collaborative correction strategy comprises a collaborative decrease correction strategy and a collaborative increase correction strategy; Acquiring an absolute average value of the slope of the load value curve; If the absolute average value of the slope is higher than the absolute average value of the defined slope, executing a collaborative reduction correction strategy; otherwise, if the absolute average value of the slope is not higher than the absolute average value of the defined slope, executing a cooperative increase correction strategy; the collaborative reduction correction strategy refers to reduction correction of feeding adjustment step length of a symmetrical heavy feeder; based on the feeding adjustment step length correction value, the current feeding-negative pressure variable frequency response coefficient and the feeding-positive pressure variable frequency response coefficient are combined, so that the variable frequency adjustment step lengths of the negative pressure Roots blower and the positive pressure Roots blower are respectively reduced; And based on the feeding adjustment step length correction value, and combining the current variable frequency-air supplementing response coefficient, reducing the opening adjustment step length of the air supplementing valve.
6. The energy consumption collaborative load management system for pneumatic conveying weighing feed according to claim 5, wherein the collaborative augmentation correction strategy specifically refers to augmentation correction of feed adjustment step length of a weighing feeder; Based on the feeding adjustment step length correction value, respectively increasing the frequency conversion adjustment step length of the negative pressure Roots blower and the positive pressure Roots blower by combining the current feeding-negative pressure frequency conversion response coefficient and the feeding-positive pressure frequency conversion response coefficient; based on the feeding adjustment step length correction value, and combining the current variable frequency-air supplementing response coefficient, increasing the opening adjustment step length of the air supplementing valve.
7. The cooperative load management system for energy consumption of pneumatic conveying weighing feeding according to claim 1, wherein the cooperative correction is performed on the adjustment step length corresponding to each operation device based on trend characteristics, and the cooperative correction strategy of the target production line is pre-warned, and the specific process is as follows: after the collaborative correction strategy is executed, acquiring a pipeline pressure distribution standard deviation of a target production line; comparing the standard deviation of the pipeline pressure distribution of the target production line with the standard deviation of the preset defined pipeline pressure distribution; If the standard deviation of the pipeline pressure distribution of the target production line is not higher than the standard deviation of the defined pipeline pressure distribution, the cooperative correction strategy of the target production line is not required to be pre-warned; if the standard deviation of the pipeline pressure distribution of the target production line is higher than the standard deviation of the defined pipeline pressure distribution, the cooperative correction strategy of the target production line is required to be pre-warned, and the corresponding adjustment step length of each operation device is subjected to stabilization constraint, so that the air flow conveying state in the target production line tends to be balanced and stable.

Description

Energy consumption collaborative load management system for pneumatic conveying weighing feeding Technical Field The invention relates to the technical field of energy consumption collaborative load management, in particular to a production capacity energy consumption collaborative load management system for pneumatic conveying weighing feeding. Background Pneumatic conveying weighing and feeding systems are generally used for conveying bulk materials such as powder, granules and the like from a silo, a metering unit to a process device or a storage unit. The system generally comprises a weighing and feeding device, a conveying pipeline, a positive pressure Roots blower, a negative pressure Roots blower, a dust removal and separation unit and the like. The weighing and feeding device belongs to continuous metering and feeding equipment, the mass flow of materials is measured and regulated through a weighing sensor and a controller, the materials are stably fed into a pneumatic conveying pipeline in a controllable feeding amount, a positive pressure Roots blower is used for providing a pushing side air source, a negative pressure Roots blower is used for providing suction side negative pressure and recovery side air flow traction, and the air speed, the pressure distribution, the solid-gas ratio and the conveying state in the pipeline are determined jointly. In the existing engineering application, the energy consumption management generally follows the thought of acquisition-evaluation-adjustment, namely acquiring information such as electricity price or energy consumption data, feeding amount and equipment running state, and the like, giving a feeding setting and fan rotating speed/valve position adjustment strategy by combining the production line load demand or the production capacity target, and monitoring energy consumption fluctuation and equipment running stability. Part of the system also introduces the concepts of load prediction, multi-objective optimization or dynamic power distribution, reduces the energy consumption cost while meeting the production requirements, and corrects the system according to real-time feedback in the running process. The management mode has commonality with general multi-load energy consumption management, energy consumption monitoring and stability management in thought, namely emphasizes data driving, target constraint and on-line adjustment, but also has stronger coupling complexity of gas-solid two-phase coupling, pipeline resistance changing along with working conditions, asymmetric action mechanisms of fans at two ends and the like in a pneumatic conveying scene. A multi-load equipment energy consumption management method, device and computer equipment are disclosed in China patent publication No. CN119539444B, and the method comprises the steps of obtaining electricity price data, energy consumption data, running state and load demand of electric equipment, classifying priority levels of the electric equipment based on the electricity price data, the energy consumption data, the running state and the load demand, predicting the load demand of the electric equipment in a future preset time period by adopting a preset multi-task learning model, generating a multi-objective optimization model based on the priority levels of the electric equipment, the load demand and the electricity price data, generating a dynamic power distribution scheme of the electric equipment based on the multi-objective optimization model, obtaining the load demand and the external environment of the electric equipment in real time, and adjusting the dynamic power distribution scheme of the electric equipment based on the load demand and the external environment. An intelligent energy consumption monitoring management system and method disclosed in the chinese patent publication No. CN117474366B, for example, includes an energy consumption control module for adjusting rated energy consumption of a unit period or sending an energy consumption device operation stability monitoring signal, an operation stability monitoring unit for reconfiguring a partition area of an energy consumption device according to energy consumption variances of different energy consumption devices in the unit period to output a first corresponding partition area or sending a first control signal, a recovery validity monitoring unit for reconfiguring the first corresponding partition area according to a breakdown recovery time of the energy consumption device to output a second corresponding partition area, and a delivery stability monitoring module for adjusting a receiving period of an energy allocation signal according to a breakdown number of the energy consumption device when responding to the first control signal. However, the above-mentioned prior art focuses more on an energy consumption management framework, a power distribution strategy or an operation stability monitoring mechanism for a multi-load device, a