CN110371675B - Intelligent chute steering and distributing control system and control method thereof - Google Patents
Intelligent chute steering and distributing control system and control method thereof Download PDFInfo
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- CN110371675B CN110371675B CN201910752806.9A CN201910752806A CN110371675B CN 110371675 B CN110371675 B CN 110371675B CN 201910752806 A CN201910752806 A CN 201910752806A CN 110371675 B CN110371675 B CN 110371675B
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- frequency motor
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000000463 material Substances 0.000 claims abstract description 28
- 238000007599 discharging Methods 0.000 claims description 8
- 230000001276 controlling effect Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000004568 cement Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005315 distribution function Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- 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
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/02—Floating material troughs
-
- 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
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
-
- 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
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/40—Feeding or discharging devices
- B65G53/46—Gates or sluices, e.g. rotary wheels
-
- 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
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/66—Use of indicator or control devices, e.g. for controlling gas pressure, for controlling proportions of material and gas, for indicating or preventing jamming of material
-
- 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
- B65G69/00—Auxiliary measures taken, or devices used, in connection with loading or unloading
- B65G69/20—Auxiliary treatments, e.g. aerating, heating, humidifying, deaerating, cooling, de-watering or drying, during loading or unloading; Loading or unloading in a fluid medium other than air
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- 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)
- Muffle Furnaces And Rotary Kilns (AREA)
- Attitude Control For Articles On Conveyors (AREA)
Abstract
The invention discloses an intelligent chute steering and distributing control system and a control method thereof, wherein the intelligent chute steering and distributing control system comprises a chute, a steering and distributing device, a first rotary feeder and a second rotary feeder; a second rotary feeder is arranged at one end of the chute, which is lower in position; at least one steering and distributing device is arranged along the length direction of the chute and is communicated with the chute; the lower part of the steering distributing device is connected with a first rotary feeder, wherein the power device of the first rotary feeder is a variable frequency motor. According to the intelligent chute steering and distributing control system, through the arrangement of the steering and distributing device and the variable frequency motor of the first rotary feeder and the intelligent temperature difference-based control method, accurate control along with material distribution can be realized through a fuzzy control theory, and the temperatures of two outlets of the preheater can be kept stable.
Description
Technical Field
The invention relates to a kiln feeding distributing system in cement production equipment, in particular to an intelligent chute steering distributing control system and a control method thereof.
Background
In the traditional kiln feeding system, the material distribution control at the top of the preheater can only roughly realize the material distribution function through a material distribution valve, and the stable temperature difference effect is poor.
The distributing valve not only needs to be manually input and adjusted, but also is difficult to realize a more accurate distributing function: when the feeding amount of two feeding points needs to be adjusted, the adjustment of the opening of the distributing valve, which is very small, can cause larger change of the feeding amount, so that the required purpose is difficult to reach, and the change of the opposite direction is very easy to cause.
Disclosure of Invention
The invention aims to provide an intelligent chute steering and distributing control system and a control method thereof, which not only can realize online intelligent adjustment, but also can realize rapid, continuous, stable and effective adjustment; the system can realize unattended operation, ensures that two temperature differences are balanced and stable, and brings guarantee for realizing a stable thermal system of the preheater system.
The invention solves the technical problems by adopting the following technical scheme: an intelligent chute steering and material-distributing control system, comprising: the device comprises a chute, a steering distributing device, a first rotary feeder and a second rotary feeder;
the end of the chute, which is higher in position, is provided with a feeding port; a second rotary feeder is arranged at one end of the chute, which is lower in position;
at least one steering and distributing device is arranged along the length direction of the chute and is communicated with the chute;
the lower end of the steering distributing device is connected with a first rotary feeder, wherein the power device of the first rotary feeder is a variable frequency motor.
Optionally, the intelligent chute steering and distributing control system further comprises a chute fan, and the chute fan is connected to the air inlet of the chute through an air pipe.
Optionally, the power device of the second rotary feeder is a fixed-rotation-speed motor.
Optionally, the discharging capacity of the first rotary feeder is 0.65 times of the material conveying capacity of the chute, and the discharging capacity of the second rotary feeder is the same as the material conveying capacity of the chute.
Optionally, the intelligent chute steering and distributing control system further comprises an intelligent control loop, wherein the intelligent control loop is connected with the variable frequency motor of the first rotary feeder, and the control of the rotating speed of the variable frequency motor is realized according to the temperature difference of the air temperatures of the two air outlets at the top of the preheater.
The invention solves the technical problems by adopting the following technical scheme: the control method of the intelligent chute steering and distributing control system comprises the following steps:
s10, setting an allowable temperature difference limiting value epsilon of an air outlet of a first preheater and an air outlet of a second preheater, and setting an upper limit rotating speed, a lower limit rotating speed and a single allowable adjustment rotating speed value of a variable frequency motor of a first rotary feeder;
s20, acquiring the current temperature a of an air outlet of the first preheater and the current temperature b of an air outlet of the second preheater;
s30, judging whether the absolute value of the difference value between the current temperature a of the air outlet of the first preheater and the current temperature b of the air outlet of the second preheater is larger than an allowable temperature difference limiting value epsilon, and if so, executing S40; otherwise, executing S30 again;
s40, judging whether the current temperature a of the air outlet of the first preheater is larger than the current temperature b of the air outlet of the second preheater, if so, executing S50, otherwise, executing S60;
s50, according to the set single allowable adjustment rotation speed value, increasing the rotation speed of the variable frequency motor of the first rotary feeder, and executing S70;
s60, adjusting the rotating speed value according to the set single permission, reducing the rotating speed of the variable frequency motor of the first rotary feeder, and executing S70;
s70, after the feeding amount is adjusted by the first rotary feeder for a single time, the system is operated for 300 seconds, and then S20 is executed again.
Optionally, the allowable temperature difference limit epsilon is set to 5 ℃.
Optionally, in S50, when the rotation speed of the variable frequency motor of the first rotary feeder is increased, determining whether the rotation speed of the variable frequency motor of the second rotary feeder reaches the upper limit rotation speed after the rotation speed is increased; if the current rotating speed of the variable frequency motor of the first rotary feeder plus a single allowable adjustment rotating speed value is larger than or equal to the upper limit rotating speed of the variable frequency motor, controlling the variable frequency motor to operate at the upper limit rotating speed; and if the upper limit rotating speed is not reached, operating according to the adjusted rotating speed.
Optionally, in S60, when the rotation speed of the variable frequency motor of the first rotary feeder is reduced, determining whether the rotation speed of the variable frequency motor of the second rotary feeder reaches the lower limit rotation speed after the rotation speed is reduced; if the current rotating speed of the variable frequency motor of the first rotary feeder minus the single allowable adjustment rotating speed value is smaller than or equal to the lower limit rotating speed of the variable frequency motor, controlling the variable frequency motor to operate at the lower limit rotating speed; and if the lower limit rotating speed is not reached, operating according to the adjusted rotating speed.
Optionally, the control method further includes: and S80, after the feeding amount is continuously regulated for three times, the temperature difference between the two air outlets of the first preheater and the air outlet of the second preheater still cannot reach the required range, and the automatic alarm is given to remind the regulation by manual intervention.
The invention has the following beneficial effects: according to the intelligent chute steering and distributing control system, through the arrangement of the steering and distributing device and the first rotary feeder, the distribution of materials can be accurately realized through the control of the material quantity of the first rotary feeder, and further the stability of the temperature difference at the outlet of the preheater is ensured.
Drawings
FIG. 1 is a schematic diagram of the intelligent chute steering and distributing control system of the invention;
fig. 2 is an enlarged schematic view of a portion a in fig. 1;
FIG. 3 is a schematic diagram of the intelligent control loop of the present invention;
FIG. 4 is a flow chart of a control method of the present invention;
the labels in the figures are: 1-a chute; 2-turning to a material distributing device; 3-a first rotary feeder; 4-a second rotary feeder; 5-a first pneumatic valve; 6-a second pneumatic valve; 7-chute fans.
Detailed Description
The technical scheme of the invention is further described below with reference to the embodiment and the attached drawings.
Example 1
The embodiment provides an intelligent chute turns to feed distribution control system, it includes: chute 1, turn to feed divider 2, first gyration feeder 3 and second gyration feeder 4.
The chute 1 is used for conveying materials, namely one end of the chute 1, which is higher in position, is provided with a feeding port, and the chute fan 7 is connected to the chute air inlet through an air pipe so as to convey the materials in the chute through the chute fan 7.
A second rotary feeder 4 is arranged at the other end (lower end) of the chute 1, wherein a power device of the second rotary feeder 4 is a fixed rotating speed motor, and a second pneumatic valve 6 is arranged at the lower end of the second rotary feeder 4 so as to realize the opening and closing of a material conveying channel through the opening and closing of the second pneumatic valve 6.
At least one steering and distributing device 2 is arranged along the length direction of the chute 1, wherein the steering and distributing device 2 is communicated with the chute 1, so that materials conveyed in the chute 1 can enter the steering and distributing device 2, and the steering and distributing device 2 has two functions, namely a distributing function and a material steering device function of the chute 1.
The lower end of the steering distributing device 2 is connected with a first rotary feeder 3, wherein the power device of the first rotary feeder 3 is a variable frequency motor, so that the adjustment of the material conveying quantity of the first rotary feeder 3 can be realized by adjusting the rotating speed of the variable frequency motor; and the lower end of the first rotary feeder 3 is provided with a first pneumatic valve 5, so that the opening and closing of a material conveying channel are realized through the opening and closing of the first pneumatic valve 5. More preferably, the discharging capacity of the first rotary feeder 3 is 0.65 times of the material conveying capacity of the chute 1, and the discharging capacity of the second rotary feeder 3 is the same as the material conveying capacity of the chute 1.
In this embodiment, the intelligent chute steering and distributing control system further comprises an intelligent control loop, wherein the intelligent control loop is connected with the variable frequency motor of the first rotary feeder 3, and the intelligent automatic control of the rotating speed of the variable frequency motor is realized according to the temperature difference of the air temperatures of the two air outlets at the top of the preheater, so that the continuous and rapid adjustment of the outlet temperature of the preheater is realized.
When the intelligent chute steering and distributing control system works, A tons of materials are conveyed in the chute and pass through the steering and distributing device to be discharged by the steering and distributing device which is preferentially supplied to the position; because the discharging capacity of the steering and distributing device is smaller than the quantity of the conveyed materials in the chute, the steering and distributing device can be ensured to be in a full-material state all the time. And the material which cannot be discharged by the steering distributing device directly moves to the next discharging point. Therefore, the air outlet temperature of the system corresponding to the two feeding points can be realized by only adjusting the rotating speed of the variable frequency motor of the first rotary feeder at the lower part of the steering distributing device.
According to the intelligent chute steering and distributing control system, through the arrangement of the steering and distributing device and the variable frequency motor of the first rotary feeder, the distribution of materials can be accurately realized through the control of the material quantity of the first rotary feeder, and further the stability of the temperature difference at the outlet of the preheater is ensured.
The invention is not only suitable for newly-built cement factories, but also suitable for the transformation of the existing cement factories, and the discharge opening of the existing chute is transformed into the steering distributing device of the invention, and the variable frequency control of the first rotary feeder and the intelligent control system are combined, so that the invention is simple and easy to implement.
Therefore, the invention breaks through the traditional material distribution mode of coarse and simple preheating top, not only can realize online intelligent adjustment, but also is continuous, quick and stable; the system realizes unattended operation, ensures that the two temperature differences are balanced and stable, and brings a stable thermal system for the preheater system.
Example 2
The embodiment provides a control method of an intelligent chute steering and distributing control system, which comprises the following steps:
s10, setting an allowable temperature difference limiting value epsilon of the air outlet of the first preheater and the air outlet of the second preheater, and setting an upper limit rotating speed, a lower limit rotating speed and a single allowable adjustment rotating speed value of a variable frequency motor of the first rotary feeder.
In this embodiment, in order to stabilize the thermal system of the preheater, the temperature difference between the first preheater air outlet and the second preheater air outlet is not easily too large, and in this embodiment, as a preferred embodiment, the allowable temperature difference limit value epsilon may be set to be within 5 ℃.
S20, acquiring the current temperature a of the air outlet of the first preheater and the current temperature b of the air outlet of the second preheater.
In this embodiment, the current temperature a and the current temperature b may be obtained by online real-time measurement by a sensor.
S30, judging whether the absolute value of the difference value between the current temperature a of the air outlet of the first preheater and the current temperature b of the air outlet of the second preheater is larger than an allowable temperature difference limiting value epsilon, and if so, executing S40; otherwise, S30 is performed again.
S40, judging whether the current temperature a of the air outlet of the first preheater is larger than the current temperature b of the air outlet of the second preheater, if so, executing S50, otherwise, executing S60.
S50, according to the set single allowable adjustment rotation speed value, increasing the rotation speed of the variable frequency motor of the first rotary feeder, and executing S70.
When the rotating speed of the variable frequency motor of the first rotary feeder is increased, judging whether the rotating speed of the variable frequency motor of the second rotary feeder reaches the upper limit rotating speed after the rotating speed is increased; if the current rotating speed of the variable frequency motor of the first rotary feeder plus a single allowable adjustment rotating speed value is larger than or equal to the upper limit rotating speed of the variable frequency motor, controlling the variable frequency motor to operate at the upper limit rotating speed; and if the upper limit rotating speed is not reached, operating according to the adjusted rotating speed.
S60, adjusting the rotating speed value according to the set single permission, reducing the rotating speed of the variable frequency motor of the first rotary feeder, and executing S70.
When the rotating speed of the variable frequency motor of the first rotary feeder is reduced, judging whether the rotating speed of the variable frequency motor of the second rotary feeder reaches the lower limit rotating speed after the rotating speed is reduced; if the current rotating speed of the variable frequency motor of the first rotary feeder minus the single allowable adjustment rotating speed value is smaller than or equal to the lower limit rotating speed of the variable frequency motor, controlling the variable frequency motor to operate at the lower limit rotating speed; and if the lower limit rotating speed is not reached, operating according to the adjusted rotating speed.
S70, after the feeding amount is adjusted by the first rotary feeder for a single time, the system is operated for 300 seconds, and then S20 is executed again.
And S80, after the feeding amount is continuously regulated for three times, the temperature difference between the two air outlets of the first preheater and the air outlet of the second preheater still cannot reach the required range, and the automatic alarm is given to remind the regulation by manual intervention.
The sequence of the above embodiments is only for convenience of description, and does not represent the advantages and disadvantages of the embodiments.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (8)
1. An intelligent chute steering and distributing control system, which is characterized by comprising: the device comprises a chute, a steering distributing device, a first rotary feeder, a second rotary feeder and an intelligent control loop;
the end of the chute, which is higher in position, is provided with a feeding port; a second rotary feeder is arranged at one end of the chute, which is lower in position;
at least one steering and distributing device is arranged along the length direction of the chute and is communicated with the chute;
the lower end of the steering distributing device is connected with a first rotary feeder, wherein the power device of the first rotary feeder is a variable frequency motor;
wherein, the discharging capacity of the first rotary feeder is 0.65 times of the material conveying capacity of the chute, and the discharging capacity of the second rotary feeder is the same as the material conveying capacity of the chute; the intelligent control loop is connected with the variable frequency motor of the first rotary feeder, and the rotating speed of the variable frequency motor is controlled according to the temperature difference of the air temperatures of the two air outlets at the top of the preheater.
2. The intelligent chute turning and material distributing control system according to claim 1, further comprising a chute fan connected to the air inlet of the chute through an air pipe.
3. The intelligent chute turning and distributing control system according to claim 1, wherein the power device of the second rotary feeder is a fixed-rotation motor.
4. A control method of an intelligent chute turning and distributing control system according to any one of claims 1-3, comprising:
s10, setting an allowable temperature difference limiting value epsilon of an air outlet of a first preheater and an air outlet of a second preheater, and setting an upper limit rotating speed, a lower limit rotating speed and a single allowable adjustment rotating speed value of a variable frequency motor of a first rotary feeder;
s20, acquiring the current temperature a of an air outlet of the first preheater and the current temperature b of an air outlet of the second preheater;
s30, judging whether the absolute value of the difference value between the current temperature a of the air outlet of the first preheater and the current temperature b of the air outlet of the second preheater is larger than an allowable temperature difference limiting value epsilon, and if so, executing S40; otherwise, executing S30 again;
s40, judging whether the current temperature a of the air outlet of the first preheater is larger than the current temperature b of the air outlet of the second preheater, if so, executing S50, otherwise, executing S60;
s50, according to the set single allowable adjustment rotation speed value, increasing the rotation speed of the variable frequency motor of the first rotary feeder, and executing S70;
s60, adjusting the rotating speed value according to the set single permission, reducing the rotating speed of the variable frequency motor of the first rotary feeder, and executing S70;
s70, after the feeding amount is adjusted by the first rotary feeder for a single time, the system is operated for 300 seconds, and then S20 is executed again.
5. The control method according to claim 4, characterized in that the allowable temperature difference limit value epsilon is set to 5 ℃.
6. The control method according to claim 4, wherein in S50, when the rotation speed of the variable frequency motor of the first rotary feeder is increased, it is determined whether the rotation speed of the variable frequency motor of the second rotary feeder has reached an upper limit rotation speed after the rotation speed is increased; if the current rotating speed of the variable frequency motor of the first rotary feeder plus a single allowable adjustment rotating speed value is larger than or equal to the upper limit rotating speed of the variable frequency motor, controlling the variable frequency motor to operate at the upper limit rotating speed; and if the upper limit rotating speed is not reached, operating according to the adjusted rotating speed.
7. The control method according to claim 4, wherein in S60, when the rotation speed of the variable frequency motor of the first rotary feeder is reduced, it is determined whether the rotation speed of the variable frequency motor of the second rotary feeder has reached a lower limit rotation speed after the rotation speed is reduced; if the current rotating speed of the variable frequency motor of the first rotary feeder minus the single allowable adjustment rotating speed value is smaller than or equal to the lower limit rotating speed of the variable frequency motor, controlling the variable frequency motor to operate at the lower limit rotating speed; and if the lower limit rotating speed is not reached, operating according to the adjusted rotating speed.
8. The control method according to claim 4, characterized by further comprising: and S80, after the feeding amount is continuously regulated for three times, the temperature difference between the two air outlets of the first preheater and the air outlet of the second preheater still cannot reach the required range, and the automatic alarm is given to remind the regulation by manual intervention.
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|---|---|---|---|
| CN201910752806.9A CN110371675B (en) | 2019-08-15 | 2019-08-15 | Intelligent chute steering and distributing control system and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910752806.9A CN110371675B (en) | 2019-08-15 | 2019-08-15 | Intelligent chute steering and distributing control system and control method thereof |
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| CN110371675A CN110371675A (en) | 2019-10-25 |
| CN110371675B true CN110371675B (en) | 2024-03-22 |
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| CN210655254U (en) * | 2019-08-15 | 2020-06-02 | 北京建筑材料科学研究总院有限公司 | Intelligent chute turns to branch material control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8738240B2 (en) * | 2010-08-10 | 2014-05-27 | Sean G. Callan | Method for high capacity stone delivery with concentric flow and enhanced nosecone for soil improvement |
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2019
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1467190A2 (en) * | 2003-04-11 | 2004-10-13 | Schenck Process GmbH | Device for continuous dosing and for pneumatically conveying of free-flowing products. |
| CN202983623U (en) * | 2013-01-05 | 2013-06-12 | 江西华农恒青农牧有限公司 | Frequency-variable feeding device for batching system |
| CN203545101U (en) * | 2013-11-21 | 2014-04-16 | 中联重科股份有限公司 | Rotating skewed slot type material distributing mechanism |
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| CN110371675A (en) | 2019-10-25 |
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