CN118239208A - Energy-saving control method and device for pipe belt machine, computing equipment and computer program product - Google Patents

Energy-saving control method and device for pipe belt machine, computing equipment and computer program product Download PDF

Info

Publication number
CN118239208A
CN118239208A CN202410590284.8A CN202410590284A CN118239208A CN 118239208 A CN118239208 A CN 118239208A CN 202410590284 A CN202410590284 A CN 202410590284A CN 118239208 A CN118239208 A CN 118239208A
Authority
CN
China
Prior art keywords
speed
value
current
torque
frequency
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202410590284.8A
Other languages
Chinese (zh)
Inventor
吴善荣
舒晓媛
陈奎续
丘书荣
廖建伟
翁艺旋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujian Longjing Environmental Protection Intelligent Transportation Engineering Co ltd
Original Assignee
Fujian Longjing Environmental Protection Intelligent Transportation Engineering Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujian Longjing Environmental Protection Intelligent Transportation Engineering Co ltd filed Critical Fujian Longjing Environmental Protection Intelligent Transportation Engineering Co ltd
Priority to CN202410590284.8A priority Critical patent/CN118239208A/en
Publication of CN118239208A publication Critical patent/CN118239208A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G43/00—Control devices, e.g. for safety, warning or fault-correcting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
    • B65G15/08—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration the load-carrying surface being formed by a concave or tubular belt, e.g. a belt forming a trough
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/04—Bulk
    • B65G2201/045—Sand, soil and mineral ore
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2203/00—Indexing code relating to control or detection of the articles or the load carriers during conveying
    • B65G2203/02—Control or detection
    • B65G2203/0266—Control or detection relating to the load carrier(s)
    • B65G2203/0291—Speed of the load carrier
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Conveyors (AREA)

Abstract

The invention discloses an energy-saving control method and device for a pipe belt machine, computing equipment and a computer program product, wherein the energy-saving control method comprises the following steps: setting the rated speed and the lowest running speed of a conveying belt of a pipe belt machine; under the idle state and the full state, the speed of the conveying belt is accelerated from zero to the rated speed, and an idle frequency change value and a full frequency change value when the unit speed is changed are obtained; obtaining a current frequency change value according to the current torque value, the current speed value, the idle frequency change value, the full load frequency change value, the idle torque and the full load torque; the current speed value is monitored in real time, the speed is switched to a speed-up state under the condition that the current speed value is lower than the uniform speed value, and the given frequency is adjusted and increased according to the current frequency change value; and switching to a deceleration state on the condition that the current speed value is higher than the uniform speed value, and adjusting and reducing the given frequency according to the current frequency change value. On the basis of effectively realizing energy-saving control, the control cost and the operation reliability are reasonably considered.

Description

Energy-saving control method and device for pipe belt machine, computing equipment and computer program product
Technical Field
The invention relates to the technical field of electrical engineering, in particular to an energy-saving control method and device of a pipe belt machine, computing equipment and a computer program product.
Background
Tube and belt machines are increasingly being used with their unique advantages for the transport of various bulk materials. The conveyed materials are surrounded and conveyed in the circular pipe-shaped conveying belt, and are not easy to spill continuously, so that the environment-friendly conveying trend requirement is met.
In the operation process, the main energy consumption component of the pipe belt conveyor is a motor, and in order to reduce unnecessary energy consumption, the motor needs to be reasonably controlled to operate so as to effectively realize energy conservation and emission reduction. A typical energy-saving control method adopts a coal quantity monitoring sensor to monitor the coal quantity of a conveyor so as to control the start and stop of the conveyor. The scheme needs to additionally arrange a coal quantity monitoring sensor, and when the coal quantity is not large, the shutdown is easy to cause, so that the actual production arrangement is not facilitated.
In view of this, there is a need to provide an energy-efficient control implementation for existing pipe-handling machines that overcomes the above-described drawbacks.
Disclosure of Invention
In order to solve the technical problems, the invention provides a pipe belt machine energy-saving control method, a device, a computing device and a computer program product, which are used for reasonably considering control cost and operation reliability on the basis of effectively realizing energy-saving control of a motor.
The invention provides an energy-saving control method of a pipe belt machine, which comprises the following steps:
setting a rated speed Vmax and a minimum running speed Vmin of a conveying belt of the pipe belt machine;
under the idle state and the full state, the speed of the conveying belt is accelerated from zero to the rated speed Vmax, and an idle frequency change value P1 and a full frequency change value P2 when the unit speed is changed are obtained; when the conveyer belt runs at uniform speed, the idle torque N1 and the full torque N2 output by the motor are respectively collected;
collecting a current torque value N and a current speed value V, and obtaining a current frequency change value P according to the current torque value N, the current speed value V, an idle frequency change value P1, a full load frequency change value P2, the idle torque N1 and the full load torque N2;
The method comprises the steps that a given frequency of a motor is kept unchanged, a conveyor belt is in a constant-speed running state, a current uniform speed value V0 is obtained, and the conveyor belt is in a monitoring state of monitoring the current speed value V in real time; switching to a speed-up state on the condition that the current speed value V is lower than the uniform speed value V0, and adjusting and increasing a given frequency according to the current frequency change value P; and switching to a speed-down state on the condition that the current speed value V is higher than the uniform speed value V0, and adjusting and reducing the given frequency according to the current frequency change value P.
Optionally, the method further comprises the following steps:
in the speed increasing state, switching to a monitoring state on the condition that the given frequency is increased to be greater than a given frequency value before adjustment or the current speed value V is greater than or equal to the rated speed Vmax;
And in the speed reduction state, switching to a monitoring state on the condition that the given frequency is reduced to be smaller than the given frequency value before adjustment or the current speed value V is smaller than or equal to the minimum running speed Vmin.
Optionally, the obtaining the no-load frequency variation value P1 and the full-load frequency variation value P2 when the unit speed is changed includes:
recording a first time length T1 from zero acceleration to the rated speed Vmax in an idle state and a time length from zero acceleration to the rated speed Vmax in a full-load state as a first time length T2;
According to the calculation formula of the frequency variation value Pc: pc=vmax×s/T, and respectively calculating and obtaining the no-load frequency variation value P1 corresponding to the unit speed variation S and the full-load frequency variation value P2 corresponding to the unit speed variation S; where S is the unit speed change.
Alternatively, according to the calculation formula of the current frequency variation value P:
P=k (P2-P1) (vmax+v (N2-N1))/(2 Vmax (N2-N1)), calculating to obtain a current frequency variation value P; where the coefficient k is a selectable coefficient.
Optionally, the adjusting the increasing of the given frequency according to the current frequency variation value P includes: increasing the given frequency of the motor by taking 1/M of the current frequency change value P as an increment in unit time; said adjusting the decrease of the given frequency according to the current frequency variation value P comprises: and reducing the given frequency of the motor by taking 1/M of the current frequency change value P as a decrement in unit time.
Optionally, the switching is in a speed-up state, provided that the current speed value V is lower than the uniform speed value V0, and is lower than the uniform speed value V0 for a predetermined time; the switching to the deceleration state is conditioned by the current speed value V being higher than the uniform speed value V0 and being higher than the uniform speed value V0 for a predetermined time.
Optionally, the collecting of the current torque value N includes: and collecting a plurality of torque data in a unit time, and taking a torque average value of the plurality of torque data as the current torque value N.
Optionally, the collecting a plurality of torque data in a unit time, and taking a torque average value of the plurality of torque data as the current torque value N includes:
d1 torque data are collected in the unit time, and a torque pre-stored data set is formed in a pre-stored mode;
continuously acquiring D1 torque data at the same time interval in the next unit time, wherein D1< D1; in the process of collecting d1 torque data, each time one torque data is collected, the earliest collected torque data in the torque pre-stored data set is replaced; and forming a torque update data set after completing the collection and replacement of the D1 torque data, removing the maximum value and the minimum value in the torque update data set, and taking the average value of the D1-2 torque data remained in the torque update data set as the current torque value N.
Optionally, the collecting of the current speed value V includes: and collecting a plurality of speed data in unit time, and taking a speed average value of the plurality of speed data as the current speed value V.
Optionally, the collecting a plurality of speed data in a unit time, and taking a speed average value of the plurality of speed data as the current speed value V includes:
d2 speed data are collected in unit time, and a speed pre-stored data set is formed in a pre-storing mode;
Continuously acquiring D2 speed data at the same time interval in the next unit time, wherein D2< D2; in the process of collecting d2 speed data, each speed data is collected, and the earliest collected speed data in the speed pre-stored data set is replaced; d2 speed data acquisition and replacement are completed, a speed update data set is formed, the maximum value and the minimum value in the speed update data set are removed, and the average value of the remaining D1-2 speed data in the speed update data set is used as a current speed value V.
The invention also provides an energy-saving control device of the pipe belt machine, which comprises:
The speed setting module is used for setting the rated speed Vmax and the lowest running speed Vmin of the conveyor belt;
The working condition initializing module is used for respectively accelerating the speed of the conveying belt from zero to the rated speed Vmax under the idle state and the full state to obtain an idle frequency change value P1 and a full frequency change value P2 when the unit speed is changed; when the conveyer belt runs at uniform speed, the idle torque N1 and the full torque N2 output by the motor are respectively collected;
The torque acquisition module is used for acquiring a current torque value N;
the speed acquisition module is used for acquiring a current speed value V;
the frequency conversion adjustment calculation module is used for obtaining a current frequency change value P according to a current torque value N, a current speed value V, an idle frequency change value P1, a full load frequency change value P2, an idle torque N1 and a full load torque N2;
the real-time monitoring module is used for acquiring a current uniform velocity value V0 under the condition that the given frequency of the motor is kept unchanged and the conveyor belt is in a uniform velocity running state, and is in a monitoring state for monitoring the current velocity value V in real time; switching to a speed-up state on the condition that the current speed value V is lower than the uniform speed value V0; switching to a deceleration state on the condition that the current speed value V is higher than the uniform speed value V0;
The variable frequency speed-up control module is used for adjusting and increasing given frequency according to the current frequency change value P;
And the variable frequency deceleration control module is used for adjusting and reducing the given frequency according to the current frequency change value P.
The invention also provides a computing device comprising a memory, a processor and a computer program stored on the memory, the processor executing the computer program to implement the steps of the energy saving control method of the pipe-in-machine as described above.
The invention also provides a computer program product comprising a computer program which, when executed by a processor, implements the steps of the energy saving control method of a pipe-and-belt machine as described above.
Compared with the prior art, the scheme provides a method for controlling the energy conservation of the pipe belt machine, specifically, under the idle state and the full state, the speed of the conveying belt is accelerated from zero to the rated speed Vmax, so that an idle frequency change value P1 and a full frequency change value P2 in unit speed change are obtained; meanwhile, a current frequency change value P is obtained according to a current torque value N, a current speed value V, an idle frequency change value P1, a full load frequency change value P2, an idle torque N1 and a full load torque N2; in the control process, the given frequency of the motor is kept unchanged, the conveyor belt is in a constant-speed running state, a current uniform speed value V0 is obtained, and the conveyor belt is in a monitoring state for monitoring the current speed value V in real time; switching to a speed-up state on the condition that the current speed value V is lower than the uniform speed value V0, and adjusting and increasing a given frequency according to the current frequency change value P; and switching to a speed-down state on the condition that the current speed value V is higher than the uniform speed value V0, and adjusting and reducing the given frequency according to the current frequency change value P. The control method is characterized in that the control method is based on the output torque of a motor of the pipe belt conveyor and the running belt speed of the conveying belt in real time, and based on the principle that different running speeds occur in different carrying capacity under the same output torque, the running belt speed which corresponds to the current torque and is most suitable is controlled by adopting a control mode of dynamic frequency modulation and speed regulation, so that the energy-saving control of the running of the pipe belt conveyor is realized. In the running process, the possibility of shutdown of the whole machine can be effectively avoided, and good technical assurance is provided for ensuring normal production. In addition, by applying the scheme, devices such as a coal quantity monitoring sensor and the like do not need to be additionally arranged, and the cost can be further reasonably controlled.
Drawings
FIG. 1 is a block flow diagram of a method for controlling energy conservation of a pipe-line machine according to an embodiment of the present application;
FIG. 2 is a schematic diagram of a pre-control speed of an energy-saving control method for a pipe belt machine according to an embodiment of the present application;
Fig. 3 is a block diagram of an energy-saving control device for a pipe-line machine according to an embodiment of the present application.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
In the operation process, the main energy consumption component of the pipe belt conveyor is a motor, and in order to reduce unnecessary energy consumption, the motor needs to be reasonably controlled to operate so as to effectively realize energy conservation and emission reduction. A related energy-saving control method for a pipe belt machine adopts a coal quantity monitoring sensor to monitor the coal quantity of a conveyor in real time, and controls the start and stop of the conveyor through the change of the coal quantity. However, this solution requires an additional coal amount monitoring sensor, and when the amount of coal is not large, the operation is easily stopped, which is not beneficial to actual production arrangement.
Based on the above, the embodiment of the application provides an energy-saving control method for a pipe belt conveyor, which takes the motor output torque of the pipe belt conveyor and the running belt speed of a conveyer belt as monitoring bases, and realizes automatic variable frequency speed regulation control according to the balance principle among the output torque, the belt speed and the carrying capacity so as to achieve the technical effect of energy-saving running.
Referring to fig. 1, the flow chart of the energy-saving control method for the pipe belt machine provided by the embodiment of the application is shown.
As shown in fig. 1, the energy-saving control method of the pipe belt machine comprises the following steps:
s101, setting the rated belt speed of the conveying belt. The nominal speed Vmax and the minimum running speed Vmin of the conveyor belt are set for the pipe-belt machine, respectively.
In a specific implementation, the setting can be performed according to the use requirements of different application scenes. That is, on the basis of the conveying capacity of the pipe-and-belt machine, the above-mentioned rated speed Vmax and minimum running speed Vmin should be set according to the functional requirements of the actual conveyed material. Of course, in other specific applications, the above rated speed Vmax and the minimum operation speed Vmin may also be the rated speed and the minimum operation speed of the device itself. The embodiments of the present application are not limited.
S102, corresponding working condition initialization data of the idle state and the full state are determined. Under the idle state and the full state, the speed of the conveying belt is accelerated from zero to the rated speed Vmax, and an idle frequency change value P1 and a full frequency change value P2 when the unit speed is changed are obtained; and when the conveyer belt runs at uniform speed, the idle torque N1 and the full torque N2 output by the motor are respectively collected.
In a specific implementation, the control method for accelerating the speed of the conveying belt can adjust the given frequency in the same incremental frequency mode so as to output the given frequency to the control end of the motor, so that incremental change of the speed is realized. For the no-load state acceleration and the full-load state acceleration, the time period T of acceleration to the rated speed Vmax is recorded, respectively. In the no-load state, the time period for accelerating the speed of the conveying belt from zero to the rated speed Vmax is a first time period T1, and in the full-load state, the time period for accelerating the speed of the conveying belt from zero to the rated speed Vmax is a first time period T2.
For the working condition initialization data, the calculation formula of the frequency change value Pc can be used: pc=vmax×s/T, and frequency variation values corresponding to the unit speed variation S under the corresponding working conditions are obtained through calculation. Taking the unit speed change S as an example of 0.1m/S, pc=vmax 0.1/T. In the no-load state, the frequency change value corresponding to the unit speed change S is a no-load frequency change value P1; in the full load state, the frequency change value corresponding to the unit speed change S is the full load frequency change value P2.
S103, determining a current frequency change value. And acquiring a current torque value N and a current speed value V, and acquiring a current frequency change value P according to the current torque value N and the current speed value V, and the idle frequency change value P1, the full load frequency change value P2, the idle torque N1 and the full load torque N2 which are acquired in the step S102.
In a specific implementation, the current frequency variation value P may be obtained based on the current torque value, the proportional relationship between the torque and the frequency variation value, and the proportional relationship between the running speed and the frequency variation value. Specifically, according to the calculation formula of the current frequency variation value P:
P=k (P2-P1) (vmax+v (N2-N1))/(2 Vmax (N2-N1)), calculating to obtain a current frequency variation value P; where the coefficient k defaults to 1.
In other specific implementations, the coefficient k in the above formula is a selectable coefficient, and may be adjusted and determined according to a specific working condition, which is not limited by the embodiment of the present application.
S104, monitoring the current speed value V in real time, and performing speed-up or speed-down variable frequency control. The method comprises the steps that a given frequency of a motor is kept unchanged, a conveyor belt is in a constant-speed running state, a current uniform speed value V0 is obtained, and the conveyor belt is in a monitoring state of monitoring the current speed value V in real time; switching to a speed-up state on the condition that the current speed value V is lower than the uniform speed value V0, and adjusting and increasing a given frequency according to the current frequency change value P; and switching to a speed-down state on the condition that the current speed value V is higher than the uniform speed value V0, and adjusting and reducing the given frequency according to the current frequency change value P.
For example, when the current speed value V is lower than 95% of the uniform speed value V0, the speed is switched to the speed-up state. In the speed increasing state, the given frequency is adjusted and increased according to the current frequency change value P, namely, 1/M of the current frequency change value P is taken as increment in unit time, the given frequency of the motor is increased, and the belt speed (the running speed of the conveying belt) is increased by increasing the given frequency of the motor, so that stable speed increasing control is realized through uniform speed change.
Taking a unit time as an example of seconds, the given frequency of the motor can be slowly increased by an incremental amount of one third (m=3) of the current frequency variation value P per second.
Further, when the given frequency increases to be greater than the given frequency value before adjustment, for example, but not limited to, when the given frequency reaches 105% of the given frequency value before adjustment, or when the current speed value V is detected to be equal to or greater than the rated speed Vmax, the variable frequency speed increasing control is stopped, and the current control state is switched to the monitoring state, that is, the current speed value V is monitored.
For example, when the current speed value V is higher than 105% of the uniform speed value V0, the speed is switched to the reduced speed state. In the deceleration state, the given frequency is adjusted and reduced according to the current frequency change value P, namely, the given frequency of the motor is reduced by taking 1/M of the current frequency change value P as a decrement in unit time, and the belt speed (the running speed of the conveying belt) is lowered by reducing the given frequency of the motor, so that stable deceleration control is realized by uniform speed change.
Taking a unit time as an example of seconds, the given frequency of the motor may be slowly reduced by a decreasing amount of one third (m=3) of the current frequency variation value P per second.
By using the scheme, the output torque of the motor of the pipe belt conveyor and the running belt speed of the conveyer belt are used as the basis in real time, and based on the principle that different running speeds occur in different carrying capacity under the same output torque, the running belt speed which is most suitable for corresponding to the current torque is controlled by adopting a control mode of dynamic frequency modulation and speed regulation, so that the energy-saving control of the running of the pipe belt conveyor is realized. In the running process, the possibility of shutdown of the whole machine can be effectively avoided, and good technical assurance is provided for ensuring normal production.
Further, when the given frequency decreases to less than the given frequency value before adjustment, for example, but not limited to, when the given frequency reaches 95% of the given frequency value before adjustment, or when the current speed value V is detected to be equal to or less than the minimum running speed Vmin, the variable frequency speed-down control is stopped, and the current control state is switched to the monitoring state, that is, the current speed value V is monitored.
In addition, in order to improve the stability of the speed increasing or the belt decreasing control, further control optimization can be performed. Please refer to fig. 2, which is a schematic diagram of speed regulation according to an embodiment of the present application.
For switching to the speed-up state, it is conditioned that the current speed value V is lower than the uniform speed value V0, and that both are lower than the uniform speed value V0 for a predetermined time. For example, but not limited to, when the current speed value V is less than 95% of the uniform speed value V0 within 20 seconds, then the speed-up state is switched. For switching to the reduced speed state, it is conditioned that the current speed value V is higher than the uniform speed value V0 and is higher than the uniform speed value V0 for a predetermined time. For example, but not limited to, when the current speed value V is higher than 105% of the uniform speed value V0 for 20 seconds, then the speed-down state is switched.
It can be understood that the condition of switching to the speed increasing state or the speed decreasing state can be determined according to the use requirement of the actual application scene. The embodiments of the present application are not limited.
In a specific implementation, in order to improve the output torque acquisition accuracy of the motor, a plurality of torque data can be acquired in a unit time, and the torque average value is taken as the current torque value N.
Specifically, firstly, D1 torque data are collected in a unit time, and a torque pre-stored data set is formed in a pre-stored mode; then continuously collecting D1 torque data at the same time interval in the next unit time, wherein D1< D1; in the process of collecting d1 torque data, replacing the earliest collected torque data in the torque pre-stored data set when one torque data is collected; and D1 torque data are collected and replaced to form a torque update data set, the maximum value and the minimum value in the torque update data set are removed, and the average value of the remaining D1-2 torque data in the torque update data set is used as the current torque value N, so that the influence of instantaneous data noise can be avoided.
Taking a unit time of seconds, d1=10 and d1=5 as an example, prestoring ten pieces of torque data in the last second, continuously acquiring five pieces of torque data in the next second at the same time interval, and replacing one piece of torque data acquired earliest in a torque prestoring data set (ten pieces of torque data) by each piece of torque data acquired in the next second, so as to finish five times of data replacement altogether; for ten pieces of torque data (replaced updated torque update data group) for which data replacement is completed five times, the maximum value and the minimum value thereof are removed, and the remaining eight pieces of torque data in the torque pre-stored data group are averaged, and this torque average value is taken as the current torque value N.
In another specific implementation, in order to improve the speed acquisition precision of the conveyor belt, a plurality of speed data can be acquired in a unit time, and the average speed value is taken as the current speed value V.
Specifically, firstly, collecting D2 pieces of speed data in unit time, and pre-storing to form a speed pre-stored data set; then continuously acquiring D2 speed data at the same time interval in the next unit time, wherein D2< D2; in the process of collecting d2 speed data, replacing the earliest collected speed data in the speed pre-stored data group when each speed data is collected; d2 speed data are collected and replaced to form a speed update data set, the maximum value and the minimum value in the speed update data set are removed, and the average value of the remaining D1-2 speed data in the speed update data set is used as a current speed value V, so that the influence of instantaneous data noise can be avoided.
In a specific implementation, the number of D1 and D2 may be the same or different; the numbers of d1 and d2 may be the same or different.
Taking a unit time of seconds, d2=10 and d2=5 as an example, pre-storing ten speed data in the last second, continuously acquiring five speed data in the next second at the same time interval, and replacing one speed data acquired earliest in a speed pre-stored data group (ten speed data) to complete five data replacement; for ten pieces of speed data (speed update data group after replacement update) for which data replacement is completed five times, the maximum value and the minimum value thereof are removed, and the remaining eight pieces of speed data in the speed update data group are averaged, and this speed average value is taken as the current speed value V.
Please refer to fig. 3, which is a block diagram of an energy-saving control device for a pipe-line machine according to an embodiment of the present application.
The pipe belt machine energy-saving control device 100 comprises a speed setting module, a torque acquisition module, a speed acquisition module, a working condition initialization module, a variable frequency adjustment calculation module, a variable frequency speed reduction control module, a variable frequency speed acceleration control module, a real-time monitoring module and a control interface module.
The speed setting module is used for receiving setting information from a user. For example, but not limited to, a nominal speed Vmax and a minimum running speed Vmin of the tube conveyor belt are set.
In a specific implementation, the setting can be performed according to the use requirements of different application scenes. That is, on the basis of the conveying capability of the pipe-and-belt machine, the above rated speed Vmax and the minimum running speed Vmin should be set according to the functional requirement of the actual conveyed material, and the embodiment of the present application is not limited.
The torque acquisition module is connected with the control interface module and used for acquiring the output torque of the motor. In order to obtain accurate monitoring basic data, an average value of a plurality of torque data acquired in a unit time can be used as a current torque value.
Specifically, D1 torque data are collected in a unit time, a torque pre-stored data set is pre-stored, next, D1 torque data are continuously collected in the same time interval in the next unit time, and D1 is smaller than D1; in the process of collecting d1 torque data, replacing the earliest collected torque data in the torque pre-stored data set when each piece of torque data is collected; and D1 torque data acquisition and replacement are completed, a torque update data set is formed, the maximum value and the minimum value in the torque update data set are removed, and the average value of the remaining D1-2 torque data in the torque update data set is used as a current torque value N and is output. In this way, the effects of transient data noise can be avoided.
Taking a unit time as an example, ten pieces of torque data (d1=10) are prestored in the last second, five pieces of torque data (d1=5) are continuously collected in the next second at the same time interval, and each piece of torque data is collected to replace one piece of torque data collected earliest in the torque prestored data set (ten pieces), so that five times of data replacement are completed altogether; for ten pieces of torque data for which five data substitutions are completed, the maximum value and the minimum value in the torque update data set are removed, and the remaining eight pieces of torque data in the torque update data set are averaged, and this torque average value is taken as the current torque value.
The speed acquisition module is connected with the control interface module and used for acquiring the running speed of the conveying belt. In order to obtain accurate monitoring basic data, an average value of the running speed (belt speed) of the conveyor belt per unit time may be used as the current speed value.
Specifically, D2 speed data are collected in a unit time, a speed pre-stored data set is pre-stored, then D2 speed data are continuously collected in the same time interval in the next unit time, and D2 is less than D2; in the process of collecting d2 speed data, replacing the earliest collected speed data in the speed pre-stored data group when each speed data is collected; d2 speed data acquisition and replacement are completed, a speed update data set is formed, the maximum value and the minimum value in the speed update data set are removed, and the average value of the remaining D1-2 speed data in the speed update data set is taken as a current speed value V and is output. In this way, the effects of transient data noise can be avoided.
Also taking a unit time as an example, ten speed data (d2=10) are prestored in the last second, five speed data (d2=5) are continuously collected in the next second at the same time interval, and each time one speed data is collected, one speed data collected earliest in the speed prestored data sets (ten) is replaced, so that five data replacements are completed altogether; for ten pieces of speed data for which five data substitutions are completed, the maximum value and the minimum value in the speed update data group are removed, the remaining eight pieces of speed data in the speed update data group are averaged, and the speed average is taken as a current speed value.
The working condition initialization module is connected with the speed setting module, the torque acquisition module and the speed acquisition module and is used for accelerating the speed of the conveying belt from zero to the rated speed Vmax under the idle state and the full state respectively.
The acceleration method can be performed by adjusting the given frequency, specifically, the given frequency is adjusted according to the same incremental frequency, and the time period T for accelerating to the rated speed Vmax is recorded respectively, wherein the time period for accelerating the speed of the conveying belt from zero to the rated speed Vmax in the idle state is a first time period T1, and the time period for accelerating the speed of the conveying belt from zero to the rated speed Vmax in the full state is a first time period T2.
Further, according to the calculation formula of the frequency variation value Pc: pc=vmax×s/T, and frequency change values corresponding to the unit speed change S of the running speed of the conveyor belt are respectively calculated, where in the idle state, the frequency change value corresponding to the unit speed change S is an idle frequency change value P1, and in the full state, the frequency change value corresponding to the unit speed change S is a full frequency change value P2. Taking the unit speed change S as an example of 0.1m/S, pc=vmax 0.1/T.
Meanwhile, when the conveyer belt of the pipe belt machine runs at uniform speed, the idle torque N1 and the full torque N2 are respectively acquired through the torque acquisition module.
The variable frequency adjustment calculation module is connected with the working condition initialization module to obtain no-load torque N1, full-load torque N2, no-load frequency change value P1 and full-load frequency change value P2; the connecting torque acquisition module acquires a current torque value N, and the connecting speed acquisition module acquires a current speed value V.
Further, according to the calculation formula of the current frequency variation value P:
P=k (P2-P1) (n×vmax+v (N2-N1))/(2×vmax (N2-N1)), and the current frequency variation value P is obtained by calculation. That is, the current frequency variation value P is obtained based on the current torque value, the proportional relation between the torque and the frequency variation value, and the proportional relation between the running speed and the frequency variation value.
Where the coefficient k is a selectable coefficient, defaulting to 1. In other specific implementations, the coefficient k may be adjusted according to specific working conditions, and embodiments of the present application are not limited.
The variable frequency speed-down control module is connected with the variable frequency adjustment calculation module and used for controlling the speed-down state. Specifically, the current frequency variation value P is acquired, the given frequency of the motor is reduced by a decreasing amount of 1/M of the current frequency variation value P in a unit time, and the belt speed (the running speed of the conveyor belt) is lowered by reducing the given frequency of the motor. When the given frequency is reduced to 95% of the given frequency value before adjustment or the current speed value V is detected to be smaller than or equal to the lowest running speed Vmin, stopping the variable frequency speed reduction control, and switching the current control state into the monitoring state.
Taking a unit time as an example of seconds, the given frequency of the motor may be slowly reduced by a decreasing amount of one third (m=3) of the current frequency variation value P per second.
The variable frequency speed-up control module is connected with the variable frequency adjustment calculation module and used for controlling the speed-up state. Specifically, the current frequency variation value P is acquired, the given frequency of the motor is increased by taking 1/M of the current frequency variation value P as an incremental amount in a unit time, and the belt speed (the running speed of the conveyor belt) is increased by increasing the given frequency of the motor. When the given frequency is increased to 105% of the given frequency value before adjustment or when the current speed value V is detected to be greater than or equal to the rated speed Vmax, the variable frequency speed increasing control is stopped, and the current control state is switched to the monitoring state.
Also taking a unit time as an example of seconds, the given frequency of the motor can be slowly increased by an incremental amount of one third (m=3) of the current frequency variation value P per second.
The real-time monitoring module is used for monitoring the given frequency and the running belt speed, and performing real-time monitoring when the control state is the monitoring state. When the given frequency of the motor of the pipe belt machine is kept unchanged and the conveyer belt of the pipe belt machine is in a constant-speed running state, the connecting speed acquisition module acquires the current uniform speed value V0 and monitors the running speed of the conveyer belt of the pipe belt machine in real time.
When the current speed value V of the conveyor belt is monitored to be reduced to 95% of the uniform speed value V0 and is lower than 95% in the preset time, the current control state is switched to the speed-increasing state; when it is detected that the current speed value V of the conveyor belt is increased to 105% of the uniform speed value V0 and is higher than 105% in a predetermined time, the current control state is switched to the deceleration state.
The control interface module is used for connecting the pipe belt machine and acquiring the operation parameters of the pipe belt machine, such as, but not limited to, motor output torque, operation speed of the conveying belt and the like; meanwhile, given frequency values output by the frequency conversion speed reduction control module and the frequency conversion speed reduction control module are received and output to a motor control end of the pipe belt machine to realize corresponding frequency conversion control.
In other specific implementations, the control interface module can be optionally arranged, and signal interaction with the pipe belt side can be independently realized by each module. The embodiments of the present application are not limited.
It should be noted that, the "connection" between the modules of the energy-saving control device for a pipe belt machine refers to a signal interaction relationship, which includes a direct interaction or an indirect interaction, so that corresponding control data interaction is realized in the process of executing the energy-saving control method for the pipe belt machine.
In addition to the foregoing method and apparatus for controlling energy of a pipe-in-machine, the embodiment of the present application further provides a computing device, where the computing device includes a memory, a processor, and a computer program stored on the memory, and the processor executes the computer program to implement the steps of the foregoing method for controlling energy of a pipe-in-machine.
It should be appreciated that other functional configurations of the computing device may be implemented using prior art techniques and are not described in detail.
In addition to the foregoing method and apparatus for controlling energy of a pipe-in-machine, embodiments of the present application also provide a computer program product, including a computer program that, when executed by a processor, implements the steps of the foregoing method for controlling energy of a pipe-in-machine.
From the foregoing description of the embodiments, it will be apparent to those skilled in the art that the present application may be implemented in hardware, or by means of software plus a necessary general hardware platform, and based on this understanding, the technical solution of the present application may be embodied in the form of a software product, where the software product may be stored in a non-volatile storage medium (may be a CD-ROM, a U-disc, a mobile hard disk, etc.), and includes several instructions to cause a computer device (may be a personal computer, an electronic device, or a network device, etc.) to perform the energy saving control method of a pipe-line machine according to the present application.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.

Claims (13)

1. The energy-saving control method of the pipe belt machine is characterized by comprising the following steps of:
setting a rated speed Vmax and a minimum running speed Vmin of a conveying belt of the pipe belt machine;
under the idle state and the full state, the speed of the conveying belt is accelerated from zero to the rated speed Vmax, and an idle frequency change value P1 and a full frequency change value P2 when the unit speed is changed are obtained; when the conveyer belt runs at uniform speed, the idle torque N1 and the full torque N2 output by the motor are respectively collected;
collecting a current torque value N and a current speed value V, and obtaining a current frequency change value P according to the current torque value N, the current speed value V, an idle frequency change value P1, a full load frequency change value P2, the idle torque N1 and the full load torque N2;
The method comprises the steps that a given frequency of a motor is kept unchanged, a conveyor belt is in a constant-speed running state, a current uniform speed value V0 is obtained, and the conveyor belt is in a monitoring state of monitoring the current speed value V in real time; switching to a speed-up state on the condition that the current speed value V is lower than the uniform speed value V0, and adjusting and increasing a given frequency according to the current frequency change value P; and switching to a speed-down state on the condition that the current speed value V is higher than the uniform speed value V0, and adjusting and reducing the given frequency according to the current frequency change value P.
2. The energy saving control method of a pipe-in-machine according to claim 1, further comprising the steps of:
in the speed increasing state, switching to a monitoring state on the condition that the given frequency is increased to be greater than a given frequency value before adjustment or the current speed value V is greater than or equal to the rated speed Vmax;
And in the speed reduction state, switching to a monitoring state on the condition that the given frequency is reduced to be smaller than the given frequency value before adjustment or the current speed value V is smaller than or equal to the minimum running speed Vmin.
3. The energy saving control method of a pipe-line machine according to claim 1 or 2, wherein the obtaining of the no-load frequency variation value P1 and the full-load frequency variation value P2 at the time of the unit speed variation includes:
recording a first time length T1 from zero acceleration to the rated speed Vmax in an idle state and a time length from zero acceleration to the rated speed Vmax in a full-load state as a first time length T2;
According to the calculation formula of the frequency variation value Pc: pc=vmax×s/T, and respectively calculating and obtaining the no-load frequency variation value P1 corresponding to the unit speed variation S and the full-load frequency variation value P2 corresponding to the unit speed variation S; where S is the unit speed change.
4. The energy-saving control method of a pipe-line machine according to claim 3, wherein the calculation formula of the current frequency variation value P is as follows:
P=k (P2-P1) (vmax+v (N2-N1))/(2 Vmax (N2-N1)), calculating to obtain a current frequency variation value P; where the coefficient k is a selectable coefficient.
5. The energy saving control method of a pipe-line machine according to claim 4, wherein the adjusting and increasing the given frequency according to the current frequency variation value P includes: increasing the given frequency of the motor by taking 1/M of the current frequency change value P as an increment in unit time; said adjusting the decrease of the given frequency according to the current frequency variation value P comprises: and reducing the given frequency of the motor by taking 1/M of the current frequency change value P as a decrement in unit time.
6. The energy saving control method of a pipe-line machine according to claim 1 or 2, characterized in that the switching to the speed-up state is conditioned on the current speed value V being lower than the uniform speed value V0 and being lower than the uniform speed value V0 for a predetermined time; the switching to the deceleration state is conditioned by the current speed value V being higher than the uniform speed value V0 and being higher than the uniform speed value V0 for a predetermined time.
7. The energy-saving control method of a pipe-line machine according to claim 1 or 2, wherein the acquisition of the current torque value N includes: and collecting a plurality of torque data in a unit time, and taking a torque average value of the plurality of torque data as the current torque value N.
8. The energy-saving control method of a pipe-line machine according to claim 7, wherein the collecting a plurality of torque data in a unit time and taking a torque average value of the plurality of torque data as the current torque value N includes:
d1 torque data are collected in the unit time, and a torque pre-stored data set is formed in a pre-stored mode;
continuously acquiring D1 torque data at the same time interval in the next unit time, wherein D1< D1; in the process of collecting d1 torque data, each time one torque data is collected, the earliest collected torque data in the torque pre-stored data set is replaced; and forming a torque update data set after completing the collection and replacement of the D1 torque data, removing the maximum value and the minimum value in the torque update data set, and taking the average value of the D1-2 torque data remained in the torque update data set as the current torque value N.
9. The energy-saving control method of a pipe-line machine according to claim 1 or 2, wherein the acquisition of the current speed value V comprises: and collecting a plurality of speed data in unit time, and taking a speed average value of the plurality of speed data as the current speed value V.
10. The energy-saving control method of a pipe-line machine according to claim 9, wherein the acquiring a plurality of speed data in a unit time and taking a speed average value of the plurality of speed data as the current speed value V includes:
d2 speed data are collected in unit time, and a speed pre-stored data set is formed in a pre-storing mode;
Continuously acquiring D2 speed data at the same time interval in the next unit time, wherein D2< D2; in the process of collecting d2 speed data, each speed data is collected, and the earliest collected speed data in the speed pre-stored data set is replaced; d2 speed data acquisition and replacement are completed, a speed update data set is formed, the maximum value and the minimum value in the speed update data set are removed, and the average value of the remaining D1-2 speed data in the speed update data set is used as a current speed value V.
11. An energy-saving control device of a pipe belt machine is characterized by comprising:
The speed setting module is used for setting the rated speed Vmax and the lowest running speed Vmin of the conveyor belt;
The working condition initializing module is used for respectively accelerating the speed of the conveying belt from zero to the rated speed Vmax under the idle state and the full state to obtain an idle frequency change value P1 and a full frequency change value P2 when the unit speed is changed; when the conveyer belt runs at uniform speed, the idle torque N1 and the full torque N2 output by the motor are respectively collected;
The torque acquisition module is used for acquiring a current torque value N;
the speed acquisition module is used for acquiring a current speed value V;
the frequency conversion adjustment calculation module is used for obtaining a current frequency change value P according to a current torque value N, a current speed value V, an idle frequency change value P1, a full load frequency change value P2, an idle torque N1 and a full load torque N2;
the real-time monitoring module is used for acquiring a current uniform velocity value V0 under the condition that the given frequency of the motor is kept unchanged and the conveyor belt is in a uniform velocity running state, and is in a monitoring state for monitoring the current velocity value V in real time; switching to a speed-up state on the condition that the current speed value V is lower than the uniform speed value V0; switching to a deceleration state on the condition that the current speed value V is higher than the uniform speed value V0;
The variable frequency speed-up control module is used for adjusting and increasing given frequency according to the current frequency change value P;
And the variable frequency deceleration control module is used for adjusting and reducing the given frequency according to the current frequency change value P.
12. A computing device comprising a memory, a processor, and a computer program stored on the memory, wherein the processor executes the computer program to implement the steps of the energy saving control method of a pipe-in-machine of claim 1.
13. A computer program product comprising a computer program, characterized in that the computer program, when being executed by a processor, realizes the steps of the energy saving control method of a pipe-and-belt machine according to claim 1.
CN202410590284.8A 2024-05-13 2024-05-13 Energy-saving control method and device for pipe belt machine, computing equipment and computer program product Pending CN118239208A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202410590284.8A CN118239208A (en) 2024-05-13 2024-05-13 Energy-saving control method and device for pipe belt machine, computing equipment and computer program product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202410590284.8A CN118239208A (en) 2024-05-13 2024-05-13 Energy-saving control method and device for pipe belt machine, computing equipment and computer program product

Publications (1)

Publication Number Publication Date
CN118239208A true CN118239208A (en) 2024-06-25

Family

ID=91564629

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202410590284.8A Pending CN118239208A (en) 2024-05-13 2024-05-13 Energy-saving control method and device for pipe belt machine, computing equipment and computer program product

Country Status (1)

Country Link
CN (1) CN118239208A (en)

Similar Documents

Publication Publication Date Title
CN101898681B (en) Belt Conveyor Load Prediction Control Method
CN104753415B (en) Start-up and shut-down control method, system and the stepper motor of stepper motor
CN118239208A (en) Energy-saving control method and device for pipe belt machine, computing equipment and computer program product
CN1269300C (en) Motor load controller for AC induction motors
CN108457709A (en) The control method and system of steam feed pump generating set
CN108150352B (en) Method and device for controlling operation of wind generating set
CN111780488B (en) Compressor control method and device capable of effectively adjusting rotating speed and refrigeration equipment
CN110963256B (en) Self-adaptive speed regulation control method for conveyor
CN112468022B (en) Frequency conversion energy-saving system for multiple groups of generator sets
JP4115747B2 (en) Hybrid power generation system
CN112177850B (en) Yaw control method and device of wind generating set
CN112520325B (en) Pipe belt conveyor tensioning control method and device and pipe belt conveyor
CN115898843A (en) Air compressor optimized operation method, equipment and system based on edge cloud cooperative control
CN114499287A (en) Constant-torque load multi-machine power balance permanent magnet speed regulation control method
CN111689170B (en) Scraper conveyor and self-adaptive speed regulation method thereof
CN109348805B (en) Uniform fertilizer distributor and control system
CN117097204B (en) Motor control method based on rotary encoder detection
CN203536972U (en) Power distribution device with gas-liquid two-phase energy storage
KR102725925B1 (en) Intelligent power control system using inverter
CN114561985B (en) Excavator throttle control method and system based on load cyclic change
EP0175405B1 (en) Belt conveyor with active part of the belt supported by a gas layer
CN110984269B (en) Intelligent consumption reduction method for bulldozer
CN116292457A (en) Snow blower and hydraulic system power control device thereof
CN117365922A (en) Multi-pump constant-pressure variable-frequency energy-saving control system and method for emulsion pump station
CN117231486A (en) Variable frequency control method, system and logic controller of air compressor

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination