CN112718223B - Pulverizer fan frequency processing system and method and storage medium - Google Patents
Pulverizer fan frequency processing system and method and storage mediumDownload PDFInfo
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- CN112718223B CN112718223BCN202110041793.1ACN202110041793ACN112718223BCN 112718223 BCN112718223 BCN 112718223BCN 202110041793 ACN202110041793 ACN 202110041793ACN 112718223 BCN112718223 BCN 112718223B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C25/00—Control arrangements specially adapted for crushing or disintegrating
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/18—Adding fluid, other than for crushing or disintegrating by fluid energy
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- Food Science & Technology (AREA)
- Disintegrating Or Milling (AREA)
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Abstract
Description
Technical Field
The invention mainly relates to the technical field of flour mill control, in particular to a flour mill fan frequency processing system, a flour mill fan frequency processing method and a storage medium.
Background
The yield of finished products in the flour mill is closely related to the air quantity, and the current flour mill has no air quantity measuring device and an air quantity control system. The frequency of the fan can be manually adjusted only by judging through experience by operators and debuggers so as to achieve the aim of adjusting the air quantity. In this process, there is uncertainty, randomness, and thus the yield of the finished product is not stable, high and low, and the maximum yield of the finished product is not achieved.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a system and a method for processing the fan frequency of a flour mill and a storage medium.
The technical scheme for solving the technical problems is as follows: a fan frequency processing system of a flour mill comprises an upper computer of the flour mill, a matrix wind speed measuring device and a processing device, wherein the matrix wind speed measuring device and the processing device are arranged on a straight pipe section at an outlet of the wind mill;
the upper computer of the flour mill is used for guiding the feeding amount and the milled material information of the flour mill;
the processing device is used for obtaining the air distribution empirical value of the milled material according to the information of the milled material;
calculating the air proportioning quantity of the milled material air distribution empirical value according to the feeding quantity of the pulverizer to obtain the air proportioning quantity;
the matrix wind speed measuring device is used for obtaining a plurality of real-time wind speeds of the straight pipe section at the outlet of the fan of the pulverizer;
the processing device is further used for calculating an average value of the real-time wind speeds to obtain an average wind speed;
calculating the real-time air volume of the average wind speed to obtain the real-time air volume;
and calculating the fan frequency of the real-time air quantity according to the proportion air quantity to obtain the fan frequency for adjusting the air quantity.
Another technical solution of the present invention for solving the above technical problems is as follows: a fan frequency processing method for a pulverizer comprises the following steps:
introducing the feeding amount and the milled material information of the flour mill, and obtaining the air distribution empirical value of the milled material according to the milled material information;
calculating the air proportioning quantity of the milled material air distribution empirical value according to the feeding quantity of the pulverizer to obtain the air proportioning quantity;
obtaining a plurality of real-time wind speeds from a matrix wind speed measuring device arranged at an outlet straight pipe section of a pulverizer fan, and calculating an average value of the plurality of real-time wind speeds to obtain an average wind speed;
calculating the real-time air volume of the average wind speed to obtain the real-time air volume;
and calculating the fan frequency of the real-time air quantity according to the proportion air quantity to obtain the fan frequency for adjusting the air quantity.
Another technical solution of the present invention for solving the above technical problems is as follows: a mill fan frequency handling system comprising a memory, a processor and a computer program stored in said memory and executable on said processor, said processor when executing said computer program implementing a mill fan frequency handling method as described above.
Another technical solution of the present invention for solving the above technical problems is as follows: a computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the method of frequency processing of a mill fan as described above.
The invention has the beneficial effects that: the method comprises the steps of calculating the ratio air quantity according to the feeding quantity of the pulverizer to the air distribution empirical value of the pulverized material to obtain the ratio air quantity, calculating the average value of a plurality of real-time air speeds to obtain the average air speed, calculating the real-time air quantity of the average air speed to obtain the real-time air quantity, and calculating the fan frequency for adjusting the air quantity according to the ratio air quantity to the fan frequency of the real-time air quantity, so that the yield is improved, the requirement on the level of an operator is lowered, manual intervention and adjustment are reduced, the purposes of stabilizing and maximizing the product yield are achieved, and the uncertainty and the randomness in the running process of the pulverizer are reduced.
Drawings
FIG. 1 is a block diagram of a system for processing fan frequency of a pulverizer according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a method for processing a fan frequency of a mill according to an embodiment of the present invention.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Fig. 1 is a block diagram of a system for processing a fan frequency of a pulverizer according to an embodiment of the present invention.
As shown in fig. 1, a system for processing the frequency of a blower of a pulverizer comprises an upper computer of the pulverizer, and a matrix wind speed measuring device and a processing device which are arranged on a straight pipe section at the outlet of the blower of the pulverizer;
the upper computer of the flour mill is used for guiding the feeding amount and the milled material information of the flour mill;
the processing device is used for obtaining the air distribution empirical value of the milled material according to the information of the milled material;
calculating the air proportioning quantity of the milled material air distribution empirical value according to the feeding quantity of the pulverizer to obtain the air proportioning quantity;
the matrix wind speed measuring device is used for obtaining a plurality of real-time wind speeds of the straight pipe section at the outlet of the fan of the pulverizer;
the processing device is further used for calculating an average value of the real-time wind speeds to obtain an average wind speed;
calculating the real-time air volume of the average wind speed to obtain the real-time air volume;
and calculating the fan frequency of the real-time air quantity according to the proportion air quantity to obtain the fan frequency for adjusting the air quantity.
Preferably, the matrix wind speed measuring device may be an LG-PBS matrix wind speed measuring device.
Preferably, the number of the measurement points of the matrix wind speed measurement device is at least 6 or more than 6.
It should be understood that the straight tube length requirement of the instrument anterior segment of milling machine fan export straight tube section and the straight tube length requirement of back end tuber pipe is more than 5 times of pipeline diameter, install on the tuber pipe cross-section of milling machine fan export straight tube section at least 6 evenly arrange matrix wind speed measuring device's measuring point.
Specifically, the air volume refers to the total volume of air sent out or sucked in by the fan of the air-cooled radiator every minute, and if the total volume is calculated according to cubic feet, the unit is CFM; in cubic meters, which is the CMM, the air volume unit often used by the radiator product is CFM.
It should be understood that the wind speed refers to the moving speed of air relative to a fixed place of the earth, and the common unit is m/s, and 1m/s is 3.6 km/h.
It is to be understood that the predetermined empirical values of the air distribution of the milled material are directly obtained from the milled material.
It should be understood that the operator can set the mill feed quantity and the milling material directly in the upper mill computer.
Specifically, such as: calcite is used as the grinding material, and the fineness is as follows: the yield of the 200-mesh D90 is as follows: 7-9 t/h; after the system of the invention is applied, the yield can reach a stable yield of 10-12 t/h.
For another example: calcium oxide was used as the milling material, fineness: the passing rate of D90 of 200 meshes, the original yield: 5-8 t/h; after the system of the invention is applied, the yield can reach a stable yield of 9-10 t/h.
Specifically, the invention solves the problems of unstable and low output of finished products, and simultaneously, the maximum output of the finished products is not achieved.
In the embodiment, the air proportioning quantity is calculated according to the air proportioning quantity of the feeding quantity of the pulverizer to the air distribution empirical value of the pulverized material, the average value of a plurality of real-time air speeds is calculated to obtain the average air speed, the real-time air quantity of the average air speed is calculated to obtain the real-time air quantity, and the fan frequency for adjusting the air quantity is calculated according to the air proportioning quantity to the real-time air quantity, so that the yield is improved, the requirement on the level of an operator is lowered, the manual intervention and adjustment are reduced, the purposes of stabilizing and maximizing the product yield are achieved, and the uncertainty and the randomness in the operation process of the pulverizer are reduced.
Optionally, as an embodiment of the present invention, in the processing device, a proportional air volume is calculated according to the feeding amount of the pulverizer and the air distribution empirical value of the pulverized material, so as to obtain a proportional air volume, which specifically is:
the feed quantity of the pulverizer and the air distribution empirical value of the pulverized material are subjected to calculation of air distribution quantity to obtain air distribution quantity, and the first type is as follows:
w＝M×106×N，
wherein, w is the air proportioning quantity, M is the feeding quantity of the flour mill, and N is the air distribution experience value of the milled material.
It is understood that the mill feed is in units of t/h.
In the embodiment, the proportion air volume is obtained by calculating the proportion air volume of the feeding volume of the flour mill and the air distribution empirical value of the milled material in the first mode, data support is provided for subsequent processing, the yield is improved, the requirement on the level of an operator is lowered, manual intervention and adjustment are reduced, the purpose of stabilizing and maximizing the product yield is achieved, and uncertainty and randomness in the operation process of the machine are reduced.
Optionally, as an embodiment of the present invention, the processing device calculates an average value of a plurality of real-time wind speeds to obtain an average wind speed, specifically:
calculating an average value of the real-time wind speeds by a second formula to obtain an average wind speed, wherein the second formula is as follows:
V＝(V1+V2+V3+V4+V5+V6+……Vn)÷n，
wherein, V1Is the 1 st real-time wind speed, V2For the 2 nd real-time wind speed, V3For the 3 rd real-time wind speed, V4For the 4 th real-time wind speed, V5For the 5 th real-time wind speed, V6For the 6 th real-time wind speed, VnIs the nth real-time wind speed, n is the number of real-time wind speeds, and V is the average wind speed.
In the embodiment, the average value of the real-time wind speeds is calculated through the second formula to obtain the average wind speed, so that data support is provided for subsequent processing, the yield is improved, the requirement on the level of an operator is lowered, manual intervention and adjustment are reduced, and the purpose of stabilizing and maximizing the product yield is achieved.
Optionally, as an embodiment of the present invention, the processing device calculates the real-time air volume of the average wind speed to obtain the real-time air volume, specifically:
calculating the real-time air volume of the average wind speed through a third formula to obtain the real-time air volume, wherein the third formula is as follows:
x＝3600*F*V，
wherein x is the real-time air volume, F is the ventilation area of the straight pipe section at the outlet of the fan of the pulverizer, and V is the average air speed.
It should be understood that the unit of the ventilation area of the air duct is m2, and the ventilation area of the air duct is a preset value.
In the embodiment, the real-time air volume is obtained by calculating the air volume of the average air speed through the third formula, so that basic data support is provided for subsequent processing, the yield is improved, the requirement on the level of an operator is lowered, and manual intervention and adjustment are reduced, so that the purpose of stabilizing and maximizing the product yield is achieved.
Optionally, as an embodiment of the present invention, the calculating, by the processing device, the fan frequency of the real-time air volume according to the ratio air volume to obtain a fan frequency for adjusting the air volume includes:
calculating the fan frequency of the ratio air quantity and the real-time air quantity through a fourth formula to obtain the fan frequency for adjusting the air quantity, wherein the fourth formula is as follows:
wherein, TI＝a×TD，
Wherein, Δ y is the fan frequency, Kp is the proportional gain, s is the Laplace operator, b is the proportional action weight, w is the proportioning air quantity, x is the real-time air quantity, TIFor integration of the action time, TDThe differential action time, a is a differential delay coefficient, and c is a differential action weight.
It should be understood that the differential delay coefficient and the differential action weight are preset values.
In the embodiment, the real-time air volume is obtained by calculating the real-time air volume of the average air speed through the third formula, so that the yield is improved, the requirement on the level of an operator is lowered, and manual intervention and adjustment are reduced, so that the purpose of stabilizing and maximizing the product yield is achieved, and the uncertainty and the randomness of the machine in the operation process are reduced.
Optionally, as an embodiment of the present invention, the upper computer is further configured to:
and displaying the average wind speed and the real-time wind volume.
Fig. 2 is a schematic flow chart of a method for processing a fan frequency of a mill according to an embodiment of the present invention.
Optionally, as another embodiment of the present invention, as shown in fig. 2, a method for processing a fan frequency of a mill includes:
introducing the feeding amount and the milled material information of the flour mill, and obtaining the air distribution empirical value of the milled material according to the milled material information;
calculating the air proportioning quantity of the milled material air distribution empirical value according to the feeding quantity of the pulverizer to obtain the air proportioning quantity;
obtaining a plurality of real-time wind speeds from a matrix wind speed measuring device arranged at an outlet straight pipe section of a pulverizer fan, and calculating an average value of the plurality of real-time wind speeds to obtain an average wind speed;
calculating the real-time air volume of the average wind speed to obtain the real-time air volume;
and calculating the fan frequency of the real-time air quantity according to the proportion air quantity to obtain the fan frequency for adjusting the air quantity.
Optionally, as an embodiment of the present invention, the calculating a ratio air volume according to the feeding amount of the pulverizer and the empirical value of air distribution of the pulverized material, and the obtaining a ratio air volume includes:
the feed quantity of the pulverizer and the air distribution empirical value of the pulverized material are subjected to calculation of air distribution quantity to obtain air distribution quantity, and the first type is as follows:
w＝M×106×N，
wherein, w is the air proportioning quantity, M is the feeding quantity of the flour mill, and N is the air distribution experience value of the milled material.
Optionally, as an embodiment of the present invention, the calculating an average value of a plurality of the real-time wind speeds to obtain an average wind speed includes:
calculating an average value of the real-time wind speeds by a second formula to obtain an average wind speed, wherein the second formula is as follows:
V＝(V1+V2+V3+V4+V5+V6+……Vn)÷n，
wherein, V1Is the 1 st real-time wind speed, V2For the 2 nd real-time wind speed, V3For the 3 rd real-time wind speed, V4For the 4 th real-time wind speed, V5For the 5 th real-time wind speed, V6For the 6 th real-time wind speed, VnIs the nth real-time wind speed, n is the number of real-time wind speeds, and V is the average wind speed.
Optionally, another embodiment of the present invention provides a system for processing a blower frequency of a pulverizer, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the method for processing a blower frequency of a pulverizer as described above. The device may be a computer or the like.
Optionally, another embodiment of the present invention provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the method for processing the frequency of the blower of the pulverizer is implemented.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment of the present invention.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. It will be understood that the technical solution of the present invention essentially contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. A fan frequency processing system of a pulverizer is characterized by comprising an upper computer of the pulverizer, and a matrix wind speed measuring device and a processing device which are arranged on a straight pipe section at an outlet of a fan of the pulverizer;
the upper computer of the flour mill is used for guiding the feeding amount and the milled material information of the flour mill;
the processing device is used for obtaining the air distribution empirical value of the milled material according to the information of the milled material;
calculating the air proportioning quantity of the milled material air distribution empirical value according to the feeding quantity of the pulverizer to obtain the air proportioning quantity;
the matrix wind speed measuring device is used for obtaining a plurality of real-time wind speeds of the straight pipe section at the outlet of the fan of the pulverizer;
the processing device is further used for calculating an average value of the real-time wind speeds to obtain an average wind speed;
calculating the real-time air volume of the average wind speed to obtain the real-time air volume;
calculating the fan frequency of the real-time air quantity according to the proportion air quantity to obtain the fan frequency for adjusting the air quantity;
the processing device calculates the fan frequency of the real-time air volume according to the proportion air volume to obtain the fan frequency for adjusting the air volume, and the method specifically comprises the following steps:
calculating the fan frequency of the ratio air quantity and the real-time air quantity through a fourth formula to obtain the fan frequency for adjusting the air quantity, wherein the fourth formula is as follows:
wherein, TI = a ×TD，
Wherein, Δ y is the fan frequency, Kp is the proportional gain, s is the Laplace operator, b is the proportional action weight, w is the proportioning air quantity, x is the real-time air quantity, TIFor integration of the action time, TDThe differential action time, a is a differential delay coefficient, and c is a differential action weight.
2. A pulverizer fan frequency processing system according to claim 1, wherein the processing apparatus calculates a ratio air volume according to the pulverizer feed rate and the pulverized material air distribution empirical value to obtain a ratio air volume, specifically:
the feed quantity of the pulverizer and the air distribution empirical value of the pulverized material are subjected to calculation of air distribution quantity to obtain air distribution quantity, and the first type is as follows:
w=M×106×N，
wherein, w is the air proportioning quantity, M is the feeding quantity of the flour mill, and N is the air distribution experience value of the milled material.
3. A mill fan frequency handling system according to claim 1, characterized in that said handling means calculates an average of a plurality of said real-time wind speeds to obtain an average wind speed, in particular:
calculating an average value of the real-time wind speeds by a second formula to obtain an average wind speed, wherein the second formula is as follows:
V=(V1+V2+V3+V4+V5+V6+……Vn)÷n，
wherein, V1Is the 1 st real-time wind speed, V2For the 2 nd real-time wind speed, V3For the 3 rd real-time wind speed, V4For the 4 th real-time wind speed, V5For the 5 th real-time wind speed, V6For the 6 th real-time wind speed, VnIs the nth real-time wind speed, n is the number of real-time wind speeds, and V is the average wind speed.
4. A pulverizer fan frequency processing system according to claim 3, wherein the processing device calculates the real-time air volume from the average wind speed to obtain a real-time air volume, specifically:
calculating the real-time air volume of the average wind speed through a third formula to obtain the real-time air volume, wherein the third formula is as follows:
x=3600*F*V，
wherein x is the real-time air volume, F is the ventilation area of the straight pipe section at the outlet of the fan of the pulverizer, and V is the average air speed.
5. A method of frequency handling of a blower of a mill based on the system of claim 1, comprising:
introducing the feeding amount and the milled material information of the flour mill, and obtaining the air distribution empirical value of the milled material according to the milled material information;
calculating the air proportioning quantity of the milled material air distribution empirical value according to the feeding quantity of the pulverizer to obtain the air proportioning quantity;
obtaining a plurality of real-time wind speeds from a matrix wind speed measuring device arranged at an outlet straight pipe section of a pulverizer fan, and calculating an average value of the plurality of real-time wind speeds to obtain an average wind speed;
calculating the real-time air volume of the average wind speed to obtain the real-time air volume;
and calculating the fan frequency of the real-time air quantity according to the proportion air quantity to obtain the fan frequency for adjusting the air quantity.
6. A method for frequency handling in a pulverizer as claimed in claim 5, wherein said calculating a proportional air flow from said pulverizer feed rate and said empirical value of pulverized material air distribution comprises:
the feed quantity of the pulverizer and the air distribution empirical value of the pulverized material are subjected to calculation of air distribution quantity to obtain air distribution quantity, and the first type is as follows:
w=M×106×N，
wherein, w is the air proportioning quantity, M is the feeding quantity of the flour mill, and N is the air distribution experience value of the milled material.
7. A method of fan frequency handling in a mill according to claim 5, characterized in that said calculating an average of a plurality of said real-time wind speeds, resulting in an average wind speed, comprises:
calculating an average value of the real-time wind speeds by a second formula to obtain an average wind speed, wherein the second formula is as follows:
V=(V1+V2+V3+V4+V5+V6+……Vn)÷n，
wherein, V1Is the 1 st real-time wind speed, V2For the 2 nd real-time wind speed, V3For the 3 rd real-time wind speed, V4For the 4 th real-time wind speed, V5For the 5 th real-time wind speed, V6For the 6 th real-time wind speed, VnIs the nth real-time wind speed, n is the number of real-time wind speeds, and V is the average wind speed.
8. An pulverizer fan frequency processing system comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the pulverizer fan frequency processing method of any of claims 5 to 7.
9. A computer-readable storage medium, in which a computer program is stored, which, when being executed by a processor, carries out the method of frequency processing of a pulverizer fan according to any one of claims 5 to 7.
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