JPH071443A - Control of batchwise kneading equipment - Google Patents

Abstract

PURPOSE:To adjust the generation timing of peak power and to enhance the use efficiency of a power supply by lowering the number of rotations or ram pressure of at least one kneader when the sum total of the instantaneous power waveforms of all of batchwise kneaders parallelly operated by single power supply equipment exceeds the capacity of the power supply equipment. CONSTITUTION:A kneader control unit 9 controls a plurality of kneaders 1 parallelly operated by the supply of power from single power supply equipment and the, powers generated from the drive motors 2 of the respective kneaders 1, are detected by motor controllers 3 and the power waveforms thereof are stored as power patterns. When the respective kneaders 1 are started, the kneader control unit 9 operates the sum total of the instantaneous power waveforms of all of the parallelly operated kneaders 1 from the preliminarily registered power patterns and lowers the number of rotations or ram pressure of at least one kneader in the timing considered to exceed the capacity of the power supply equipment to suppress the sum total of powers to the capacity of the power equipment or less.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for controlling batch type kneading equipment using a plurality of batch type kneaders.

[0002]

2. Description of the Related Art Generally, in a batch type kneading machine, a power pattern having a peak power of 200% of the average power as shown in FIG. 7 is randomly generated. Therefore, when using multiple batch-type kneaders on a single power contract line, it is not possible to adjust the load on the multiple kneaders, so consider the case where peaks overlap and reduce the average power Power receiving equipment commensurate with 200% or more is required.

That is, the average power used was limited to 50% with respect to the power receiving facility capacity.

[0004]

Therefore, it is impossible to adjust the peak power generation timing in the related art.
Only the kneading power with an average power of 50% or less was usable with respect to the actual capacity of the power receiving equipment, and the use efficiency of the power source was very poor. In view of the above problems, the present invention improves the usage efficiency of a power source by adjusting the timing of peak power generation.

[0005]

A first technical means of the present invention for solving this technical problem is to provide a plurality of batch type kneaders 1 in parallel by feeding power from a single power supply facility 7. In the control method of the batch type kneading equipment to be operated, the instantaneous power waveform of each batch type kneading machine 1 is stored,
The sum of the instantaneous power waveforms of all batch-type kneading machines 1 operating in parallel is calculated, and when the sum exceeds the power source capacity of the electric power equipment, the batch-type kneading operating in parallel. At least one of the batch-type kneading machines 1 in the machine 1 is to reduce the rotation speed or the ram pressure.

A second technical means is a batch kneading equipment control method in which a plurality of batch kneading machines 1 are operated in parallel by feeding power from a single power supply equipment 7, and each batch kneading machine 1 is operated. Of the instantaneous power waveforms of the batch type kneaders 1 operating in parallel are calculated, and when this total exceeds the power capacity of the power facility, The point is that the kneading start timing of at least one batch type kneading machine 1 among the batch type kneading machines 1 operating in parallel is shifted so that the total electric power does not exceed the power supply capacity of the power supply equipment 7.

[0007]

When kneading a certain composition, the instantaneous power waveforms of the respective batch type kneading machines 1 are stored and the sum of the instantaneous power waveforms of all batch type kneading machines 1 operating in parallel is calculated, When the total exceeds the power supply capacity of the electric power equipment, the rotation speed or ram pressure of at least one batch type kneading machine 1 operating in parallel is decreased, or kneading is performed. The start timing is shifted so that the total power does not exceed the power capacity of the power facility 7. Therefore, the peak power generation timing can be adjusted.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 1 is a batch-type kneading machine, in which a kneading chamber is formed, and a kneading material is kneaded by rotating a kneading rotor or the like. Reference numeral 2 is a kneader drive motor, and 3 is a motor control device. Reference numeral 4 is a ram for pushing the kneading material into the kneading chamber of the kneading machine 1. Reference numeral 5 is a ram pressurizing pipe, and 6 is a ram adjusting valve. By adjusting the ram adjusting valve 6, it is possible to change the ram pressurization and adjust the pushing amount of the kneading material into the kneading chamber.

As shown in FIG. 2, there are a plurality of batch type kneading machines 1, and the batch type kneading machines 1 are provided corresponding to the respective kneading machines 1 by supplying power from a single power source equipment 7. In addition, a plurality of the kneading machine drive motors 2 are operated in parallel. Reference numeral 9 is a kneading machine control device for controlling the plurality of kneading machines 1. Electric power generated from the kneading machine drive motor 2 that drives each kneading machine 1 is detected by the motor control device 3, and the electric power waveform is stored as a power pattern by the kneading machine control device 9. # 1 to #
Under the condition that the kneading machines 1 up to n are operated at the same time, the electric power detection and the storage are automatically performed by the single kneading machine controller 9 for the kneading machines 1 # 1 to #n. Made continuously.

Further, the kneading machine control device 9 calls the power pattern of the compound from the power patterns registered in advance when the kneading of the compound of each kneading machine 1 is started, and the kneading machine 1 controls the kneading machine 1. From the electric power patterns of other blends to be executed, the total sum of the instantaneous electric power waveforms of all the kneading machines 1 operated in parallel is calculated to calculate the total electric power that will be generated, and the total electric power is the power source. When it is considered that the capacity of the equipment 7 is exceeded, at least one of the kneading machines 1 operating in parallel is considered to be such that the total amount of electric power exceeds the capacity of the power supply equipment, as shown in FIGS. 4 and 5. By lowering the rotation speed or ram pressure of one kneading machine 1, the total amount of electric power is suppressed below the capacity of the power supply equipment.

Further, the kneading machine control device 9 controls the disturbance of the electric power pattern generated by adjusting various kneading processes,
The calculation is performed using an integral value (difference in integrated electric energy) on the time axis of the difference from the power pattern stored in advance, and parameters such as the kneading time and the kneading temperature are automatically corrected. For example, when a power decrease of 100 KWH occurs as a result of adjusting the kneading process with respect to the actually assumed power pattern, the power is consumed up to that amount (0.1 hour for an average power of 1000 KW). , Extend the kneading time automatically.

Next, the control operation of the kneading machine 1 by the kneading machine control device 9 will be described with reference to the flowchart of FIG. In step 1, the power waveforms of the kneading machines 1 of # 1 to #n are sampled and the power patterns of the respective kneading machines 1 are stored. In step 2, it is judged whether or not the operation of the next mixture is started,
If the operation of the next mixture is not started, the process returns to step 1, and if the operation of the next compound is started, the process proceeds to step 3.

All the kneading machines 1 operated in parallel in step 4 are called up in step 3 to call up the power pattern of the next mixture.
The sum of the instantaneous power waveforms of is calculated to calculate the total power that will be generated. In step 5, it is determined whether or not the total electric power is larger than the power supply equipment capacity. If it is larger than the power supply equipment capacity, proceed to step 8, and if it is larger than the power supply equipment capacity, proceed to step 6.

In step 6, the power peak timing is determined, and in step 7, in order to suppress the total power below the capacity of the power source, which kneader 1 is used at what timing.
Determine the power control method to reduce the rotation speed or ram pressure. Start kneading in step 8 and step 9
Then, it is determined whether or not the power control determined in step 7 is to be performed, and if the power control is not to be performed, step 11 is performed.
Proceed to. When performing power control, the process proceeds to step 10 and power control is performed. As a result, the rotation speed or the ram pressure of at least one kneading machine 1 among the kneading machines 1 operating in parallel is lowered at a timing when the total amount of electric power is considered to exceed the capacity of the power source, and thus the ram pressure shown in FIG. Also, as shown in FIG. 5, the total amount of electric power is suppressed to be less than or equal to the capacity of the power supply facility.

In step 11, as in step 1, the power waveforms of the kneading machines # 1 to #n operating in parallel are sampled, and the power patterns of the respective kneading machines 1 are stored.
By this, the instantaneous power waveform of each kneader 1 is updated. Then, the process proceeds from step 11 to step 12, and in step 12, it is determined whether or not the operation of the next mixture is started. If it is not the operation of the next compound, the process returns to step 9, and if the operation of the next compound is started, the process returns to step 3. .

Incidentally, in the above-mentioned embodiment, the total number of electric powers is suppressed below the capacity of the power source equipment by lowering the rotation speed or the ram pressure of the kneading machines 1 operating in parallel. Instead, when the total amount of electric power exceeds the power supply capacity of the electric power equipment 7, the other electric kneading machine 1 generates the peak electric power of the electric kneading machine 1 under the light electric power load as shown in FIG. The kneading timing is adjusted so that the kneading machines 1 are operated in parallel.
It is also possible to shift the kneading start timing of at least one of the kneading machines 1 so that the total amount of electric power does not exceed the power source capacity of the power source equipment 7.

[0017]

According to the present invention, the instantaneous power waveform of each batch type kneader 1 is stored and the sum of the instantaneous power waveforms of all batch type kneaders 1 operating in parallel is calculated. However, when this total exceeds the power capacity of the electric power equipment, the rotation speed or ram pressure of at least one batch type kneading machine 1 among the batch type kneading machines 1 operating in parallel is decreased, Alternatively, since the kneading start timing is shifted so that the total does not exceed the power source capacity of the power source equipment 7,
It becomes possible to easily adjust the generation timing of the peak power, and therefore it is possible to use the kneading power having a relatively high average power with respect to the actual power supply capacity of the power supply equipment 7, and to improve the efficiency of the power supply. Can be greatly improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of the present invention.

FIG. 2 is a block diagram.

FIG. 3 is a flowchart for explaining an operation.

FIG. 4 is a graph showing an electric power pattern of each kneading machine.

FIG. 5 is a graph showing the total power consumption.

FIG. 6 is a graph showing a power pattern when power is adjusted by timing adjustment.

FIG. 7 is a graph showing an electric power pattern of a kneading machine for explaining a conventional example.

[Explanation of symbols]

 1 Batch type kneader 2 Kneader drive motor 3 Motor controller 4 Ram 9 Kneader controller

Claims (3)

[Claims] 1. A method for controlling a batch-type kneading machine in which a plurality of batch-type kneaders (1) are operated in parallel by power supply from a single power source equipment (7). ) Is stored, the sum of the instantaneous power waveforms of all batch-type kneading machines (1) operating in parallel is calculated, and this total exceeds the power capacity of the power facility. In this case, a method for controlling batch-type kneading equipment, characterized in that the rotation speed or ram pressure of at least one batch-type kneader (1) among the batch-type kneaders (1) operating in parallel is lowered. . 2. A method for controlling a batch-type kneading machine in which a plurality of batch-type kneaders (1) are operated in parallel by power supply from a single power source equipment (7). ) Is stored, the sum of the instantaneous power waveforms of all batch-type kneading machines (1) operating in parallel is calculated, and this total exceeds the power capacity of the power facility. In this case, at least one batch type kneader (1) among the batch type kneaders (1) operating in parallel has a kneading start timing such that the sum of electric power exceeds the power capacity of the power source equipment (7). A method for controlling a batch-type kneading facility, which is characterized by shifting so as not to occur. 3. When the kneading machines (1) are operated in parallel, the instantaneous power waveforms of the respective batch-type kneading machines (1) are sampled and stored, so that the respective batch-type kneading machines (1) can be stored. ) The instantaneous power waveform of (1) is updated.
Alternatively, the method for controlling the batch-type kneading equipment according to claim 2.