CN110657680A - Sintering machine material distribution control system and method - Google Patents
Sintering machine material distribution control system and method Download PDFInfo
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- CN110657680A CN110657680A CN201910964569.2A CN201910964569A CN110657680A CN 110657680 A CN110657680 A CN 110657680A CN 201910964569 A CN201910964569 A CN 201910964569A CN 110657680 A CN110657680 A CN 110657680A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B21/00—Open or uncovered sintering apparatus; Other heat-treatment apparatus of like construction
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Abstract
The application discloses control system and method of sintering machine cloth, and the control system comprises: including feed bin, main door and main door aperture detection device, wherein: the discharge hole of the storage bin is communicated with the main door; the main door is provided with a bearing, and the main door can rotate around the bearing under the driving of a driving device, so that the opening degree of the main door can be adjusted; the main door opening degree detection device comprises a displacement sensor, and the displacement sensor is used for detecting the displacement of the main door; the displacement sensor is connected to a data processor, and the data processor is used for calculating a main door opening value according to an output signal of the displacement sensor. In the control mode of sintering machine cloth in this application, can be accurate timely acquire the opening value of main door to operating personnel can accurate adjustment main door aperture, and even bed of material thickness is obtained to more accurate control bed of material thickness, improves the sintering deposit quality.
Description
Technical Field
The application relates to the technical field of sintering, in particular to a system and a method for controlling material distribution of a sintering machine.
Background
Sintering refers to a process of converting a powdery material into a compact body, and in a steel production process, iron ore powder, coal powder and lime are uniformly mixed according to a certain proportion, and sintered ore with sufficient strength and granularity is obtained through sintering and is used as a blast furnace ironmaking conveying raw material. Aiming at the material distribution process in the sintering production process flow, if the material layer after material distribution has a flat surface and uniform thickness, the whole air permeability of the material layer can be improved, and the quality of the sintering ore is improved, so the quality of the sintering ore is directly influenced by the material distribution effect, and the control of the material distribution of the sintering machine becomes a research focus.
Whether the material layer thickness is even is the important factor that the cloth effect is good or bad, and at present, the flow of cloth is adjusted to the aperture size that utilizes the feed inlet on adjusting the cloth groove among the cloth process usually. If the opening of the feeding opening is adjusted to be large, the flow of the material distributing device for distributing the material to the sintering machine trolley is large, the thickness of a corresponding material layer is large, and otherwise, the thickness of the material layer is small. The size of feed inlet is markd by the mechanical scale that sets up on the feed inlet, and the staff confirms the size of feed inlet at that time through the scale data of observing the mechanical scale.
Because the sintering field environment is severe, and dust and vapor are more, the mechanical scale is easy to rust, and the scale data of the mechanical scale are difficult to accurately observe by workers, so that the size of a feeding port in the material distribution process cannot be accurately detected. If the size of the feeding port cannot be accurately determined, the worker cannot control the material distribution flow, the control of the material distribution process is inaccurate, and a material layer with uniform thickness cannot be obtained.
Disclosure of Invention
The application provides a control system and method for sintering machine material distribution, which aim to solve the technical problem that a material layer with uniform thickness cannot be obtained due to the fact that the size of a feeding port cannot be accurately detected in the prior art.
In order to solve the technical problem, the embodiment of the application discloses the following technical scheme:
in a first aspect, an embodiment of the present application discloses a control system for distributing materials of a sintering machine, the control system includes a storage bin, a main door and a main door opening degree detection device, wherein:
the discharge hole of the storage bin is communicated with the main door;
the main door is provided with a bearing, and the main door can rotate around the bearing under the driving of a driving device, so that the opening degree of the main door can be adjusted;
the main door opening degree detection device comprises a displacement sensor, and the displacement sensor is used for detecting the displacement of the main door;
the displacement sensor is connected to a data processor, and the data processor is used for calculating a main door opening value according to an output signal of the displacement sensor.
Optionally, in the control system for distributing materials of a sintering machine, the displacement sensor is a stay wire displacement sensor.
Optionally, in the above control system for distributing materials of a sintering machine, one end of the stay wire displacement sensor is fixed to the side wall of the main door, and the other end of the stay wire displacement sensor is fixed to the bunker.
Optionally, in the above control system for distributing materials of a sintering machine, the fixed point between the stay wire displacement sensor and the main door is close to the arc edge of the main door.
Optionally, in the control system for distributing materials of a sintering machine, the output signal of the displacement sensor ranges from 4mA to 20 mA.
In a second aspect, the embodiment of the application discloses a method for controlling the material distribution of a sintering machine, which utilizes any one of the above control systems for material distribution of a sintering machine, wherein a plurality of auxiliary doors are arranged on a main door in the control system, valve positioners are correspondingly arranged on the plurality of auxiliary doors, the valve positioners are connected with a data processor, the data processor is further connected with a layer thickness detection device,
the method comprises the following steps:
setting a given material layer thickness value according to the production requirement of the material layer thickness, and setting the opening degree of a main door according to the given material layer thickness value;
the stock bin unloads according to the opening degree of the main door, and the layer thickness detection device detects the thickness of the material layer to obtain the current actual thickness of the material layer;
and adjusting the corresponding auxiliary opening degree through the valve positioner according to the difference value between the material layer thickness given value and the current actual material layer thickness.
Optionally, in the method for controlling material distribution of a sintering machine, the setting of the opening degree of the main door according to the given value of the thickness of the material layer includes:
setting a preset opening value of the main door according to a given material layer thickness value, and driving the main door to operate by using a driving device;
according to the operation of the main door, the displacement sensor outputs a current signal;
calculating the current displacement and the current opening value of the main door according to the current signal;
and if the current opening value is equal to the preset opening value, stopping the driving device.
Optionally, in the method for controlling distribution of a sintering machine, the calculating a current displacement and a current opening value of the main door according to the current signal includes:
calculating the current displacement of the main door according to the current signal;
and calculating the percentage of the current displacement amount to the maximum displacement amount of the main door to obtain the current opening value, wherein the maximum displacement amount of the main door corresponds to a current signal output by the displacement sensor in a full-scale process.
Optionally, in the method for controlling distribution of a sintering machine, the calculating a current displacement of the main door according to the current signal includes:
converting the current signal into a scale displacement, wherein the scale displacement is the displacement of the displacement sensor;
and calculating the difference value between the maximum displacement of the displacement sensor and the displacement of the scale to obtain the current displacement of the main door.
Optionally, in the method for controlling material distribution of a sintering machine, the adjusting, by the valve positioner, the corresponding auxiliary opening according to the difference between the given value of the material layer thickness and the current actual material layer thickness includes:
if the difference value between the material layer thickness given value and the current actual material layer thickness is larger than zero, the opening of the auxiliary door is increased;
and if the difference value between the material layer thickness given value and the current actual material layer thickness is smaller than zero, reducing the opening of the auxiliary valve.
Compared with the prior art, the beneficial effect of this application is:
the application provides a control system and a method for distributing sintering machines. In the material distribution process, a material layer thickness given value is set according to the production requirement of the material layer thickness, the opening degree of a main door is set according to the material layer thickness given value, the main door is driven by a driving device to rotate around a bearing, meanwhile, a displacement sensor outputs current signals according to the operation of the main door, and the displacement sensor outputs different current values when the main door operates at different positions. And the data processor connected with the displacement sensor calculates the current opening value of the main door in real time according to the current signal of the data processor, and stops the driving device if the current opening value reaches the opening degree of the main door required by production, and the storage bin unloads according to the set opening degree of the main door. In the control mode of sintering machine cloth in this application, can be accurate timely acquire the opening value of main door to operating personnel can accurate adjustment main door aperture, and even bed of material thickness is obtained to more accurate control bed of material thickness, improves the sintering deposit quality.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a basic structure of a control system for distributing materials of a sintering machine according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating operational variations in the opening of a main door according to an embodiment of the present invention;
FIG. 3 is a diagram illustrating a variation of displacement of a displacement sensor according to an embodiment of the present invention;
FIG. 4 is a diagram illustrating a positional relationship between a main door and an auxiliary door according to an embodiment of the present invention;
fig. 5 is a schematic flow chart of a method for controlling material distribution of a sintering machine according to an embodiment of the present invention;
description of reference numerals: 1. a storage bin; 2. a main door; 3. a bearing; 4. a drive device; 5. a displacement sensor; 6. an auxiliary door; 7. a valve positioner; 8. a sintering pallet; 9. and (4) a round roller.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, a basic structural diagram of a control system for distributing materials of a sintering machine according to an embodiment of the present invention is shown. As shown in fig. 1, the control system includes: feed bin 1, main door 2 and main door aperture detection device. Hold in the feed bin 1 and wait the raw materials of sintering, the discharge gate and the main door 2 intercommunication setting of feed bin 1, and the discharge gate matching of main door 2 is equipped with round roller 9, and can roll through round roller 9 and locate on sintering machine platform truck 8. The bin 1 is unloaded to the sintering machine trolley 8 through the main door 2, the opening degree of the main door 2 is related to the unloading flow, and the material layer thickness on the sintering machine trolley 8 is further influenced. The opening degree of the main door 2 is detected by a main door opening degree detection device, wherein the relative distance between the main door 2 and the round roller 9 is the main door opening degree.
The displacement sensor 5 in the main door opening degree detection device can detect the displacement amount of the main door 2. When the main door 2 is driven by the driving device 4 to continuously operate, the displacement sensor 5 can detect the displacement change of the main door 2 in real time, the displacement sensor is an element capable of outputting a current value according to the moving distance, and when the main door 2 rotates, the displacement sensor 5 can output a corresponding current value. The displacement sensor 5 is connected to a data processor, and the data processor is used for obtaining the displacement of the main door 2 according to the output signal of the data sensor, and further calculating the opening value of the main door.
The specific material distribution process is as follows: the staff sets for the bed of material thickness given value according to required bed of material thickness in the production demand, sets up corresponding main door aperture according to this bed of material thickness given value again, and drive arrangement 4 drives main door 2 and rotates around bearing 3 this moment, and simultaneously, displacement sensor 5 detects the running position of main door 2. As the main door 2 rotates to different positions, the displacement sensor 5 is caused to output different current values. According to the current value output by the displacement sensor 5, the connected data processor obtains the corresponding displacement of the main door 2, and calculates the current opening value of the main door 2 according to the displacement. And if the current opening value reaches the opening degree of the main door required by production, stopping the driving device 4 and finishing the opening degree setting of the main door 2. And finally, discharging the material by the bin 1 according to the set opening degree of the main door. In the control mode of sintering machine cloth in this application, can be accurate timely acquire the opening value of main door to operating personnel can accurate adjustment main door aperture, and even bed of material thickness is obtained to more accurate control bed of material thickness, improves the sintering deposit quality.
Furthermore, the displacement sensor 5 is a stay wire displacement sensor in the application, the tensile displacement sensor is suitable for measuring the displacement at low speed and medium acceleration, the structure is compact, the measuring stroke is long, and the required installation space is small in size. One end of the stay wire displacement sensor is fixed on the side wall of the main door 2, and the other end of the stay wire displacement sensor is fixed on the storage bin 1. When the opening degree of the main door 2 is adjusted to the minimum state, namely when the main door 2 is contacted with the round roller 9, one end of the displacement sensor 5 is fixed on the side wall of the main door 2, then the displacement sensor 5 is stretched to the maximum measuring range, and the other end of the displacement sensor 5 is fixed on the storage bin 1. Wherein, the installation position of the displacement sensor 5 is as close as possible to the arc edge of the side wall of the main door 2. When the main door 2 is driven by the driving device 4 to make a rotational motion around the bearing 3, the closer to the arc edge, the greater the displacement amount, and thus the higher the measurement accuracy of the displacement sensor 5. Of course, the displacement sensor 5 may be installed near the inner side of the main door 2 as long as it is installed at any position satisfying the installation condition, ensuring that the displacement sensor 5 can be fully extended and retracted.
In the control system for distributing materials of the sintering machine provided by the embodiment of the invention, the range of the output signal of the displacement sensor 5 is 4-20 mA. When the displacement sensor 5 has no displacement, namely when the main door 2 rotates to the maximum opening, the current value output by the displacement sensor 5 is 4mA, when the displacement sensor 5 is in full scale, namely when the main door 2 is in contact with the round roller 9, the current value output by the displacement sensor 5 is 20mA, and the displacement and the output current value are in linear proportion relation. That is, when the main door opening is 0%, the output current value of the displacement sensor 5 is 20mA, and when the main door opening is 100%, the output current value of the displacement sensor 5 is 4mA, and the current value at any displacement of the displacement sensor 5 in the range can be calculated by the linear ratio, and the current value can be converted into the displacement of the main door 2 by the data processor.
Referring to fig. 2, a graph illustrating operation variation of the main door opening according to the embodiment of the present invention is shown, and fig. 3 is a graph illustrating displacement variation of the displacement sensor according to the embodiment of the present invention. Referring to fig. 2 and 3, when the main door 2 is located at the position where the opening degree is minimum, i.e., at the position 1, the displacement amount of the displacement sensor 5 is y1The current value output from the displacement sensor 5 is 20mA, and the displacement amount of the main door 2 is 0. With the rotation of the main door 2, when the main door 2 is located at an arbitrary position, i.e., position 2, the displacement amount of the displacement sensor 5 is yiThe current value output by the displacement sensor 5 is IiThe displacement of the main door 2 is y1-yi. When the main doorWhen the door 2 is at the position of maximum opening, that is, at the position 3, the displacement amount of the displacement sensor 5 is 0, the current value output by the displacement sensor 5 is 4mA, and the displacement amount of the main door 2 is maximum.
Corresponding to the system, the embodiment of the invention also provides a method for controlling the material distribution of the sintering machine, which utilizes the system for controlling the material distribution of the sintering machine, and refers to fig. 4, which is a position relation diagram of the main door and the auxiliary door provided by the embodiment of the invention. As shown in fig. 4, a plurality of auxiliary doors 6 are arranged on the main door 2 in the control system, and the thickness of the material layer on the sintering pallet 8 is adjusted and controlled by the cooperation of the main door 2 and the auxiliary doors 6 in the material distribution process. A plurality of door 6 of assisting all correspond and are provided with valve positioner 7, and valve positioner 7 is through the flexible size of 6 apertures of corresponding supplementary door of control of driving actuating cylinder, valve positioner 7 all is connected with data processor, data processor still is connected with the bed thickness detection device.
Referring to fig. 5, a schematic flow chart of a method for controlling material distribution of a sintering machine according to an embodiment of the present invention is shown. With reference to fig. 5, the method comprises the following steps:
step S100: setting a given material layer thickness value according to the production requirement of the material layer thickness, and setting the opening degree of a main door according to the given material layer thickness value;
and setting a preset opening value of the main door according to the given value of the thickness of the material layer, and driving the main door to operate by using a driving device. For example, the opening degree of the main door 2 is set to be 50% according to the given value of the material layer thickness, and then the main door 2 is driven to rotate around the bearing 3 by the driving device 4.
According to the operation of the main door, the displacement sensor outputs a current signal. According to the current signal, the current displacement of the main door is calculated, the data processor converts the current value output by the displacement sensor 5 into the displacement of the displacement sensor 5, and the conversion process is as follows:
in the formula IiThe current value output by the displacement sensor at any position is in units of mA and IiHas a value range of 4-20mA, yiThe displacement of the displacement sensor at any position is expressed in mm and y1The displacement of the displacement sensor under the maximum measuring range is in mm.
Calculating the displacement y of the displacement sensor by the above formulaiNamely, the displacement of the scale, and finally, the displacement of the scale is subtracted from the maximum displacement of the displacement sensor 5, so that the current displacement of the main door 2 at that time can be obtained.
And calculating the percentage of the current displacement amount to the maximum displacement amount of the main door to obtain the current opening value, wherein the maximum displacement amount of the main door corresponds to a current signal output by the displacement sensor in a full-scale process. The current opening value is calculated as follows:
in the formula, YiThe opening value of the main door at the position i, namely the current opening value.
If the current opening value is equal to the preset opening value, stopping the driving device, and if the calculated Y is the same as the preset opening value, stopping the driving deviceiThe previously preset 50% is reached, the driving device 4 is controlled to stop, and the main door 2 stops operating.
Step S200: the stock bin unloads according to the opening degree of the main door, and the layer thickness detection device detects the thickness of the material layer to obtain the current actual thickness of the material layer;
step S300: and adjusting the corresponding auxiliary opening degree through the valve positioner according to the difference value between the material layer thickness given value and the current actual material layer thickness.
If the difference value between the material layer thickness given value and the current actual material layer thickness is larger than zero, the opening of the auxiliary door is increased; and if the difference value between the material layer thickness given value and the current actual material layer thickness is smaller than zero, reducing the opening of the auxiliary valve. Because in the actual production process, drive each cylinder respectively through each valve locator, and then the aperture of every auxiliary door of independent control, the aperture of every auxiliary door is all inequality. Assuming that the 1# auxiliary door, the 2# auxiliary door, …, and the n # auxiliary door are respectively X1, X2, …, Xn, and the main door is Y in fig. 5, the overall opening Z1, Z2, …, Zn at each auxiliary door position are respectively: y + X1, Y + X2, …, Y + Xn. After the main opening degree Y is determined, corresponding adjustment control is carried out by combining the auxiliary door, and the calculation formula of the whole opening degree is as follows:
Zi＝Y+(-1)mXi(i-1, 2, …, n; m-0 or 1)
In the formula: ziTo assist the overall opening of the door i, XiThe auxiliary opening of the auxiliary door i can be obtained through a corresponding valve positioner.
In the above formula, it is assumed that the main door opening Y does not change after coarse adjustment, and Z needs to be adjusted when the material layer thickness needs to be changediThe value is increased or decreased, only the opening X of the auxiliary valve is needed to be adjustediThe required requirements can be met. When m is 1, the given value of the thickness of the material layer is smaller than the current actual thickness of the material layer when the opening degree Y of the main door is unchanged, and only the opening degree X of the auxiliary door needs to be adjustediThe size is reduced; when m is 0, the given value of the thickness of the material layer is larger than the current actual thickness of the material layer when the opening degree Y of the main door is unchanged, and only the opening degree X of the auxiliary door needs to be adjustediBecomes larger.
Since the above embodiments are all described by referring to and combining with other embodiments, the same portions are provided between different embodiments, and the same and similar portions between the various embodiments in this specification may be referred to each other. And will not be described in detail herein.
It is noted that, in this specification, relational terms such as "first" and "second," and the like, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a circuit structure, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such circuit structure, article, or apparatus. Without further limitation, the presence of an element identified by the phrase "comprising an … …" does not exclude the presence of other like elements in a circuit structure, article or device comprising the element.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
The above-described embodiments of the present application do not limit the scope of the present application.
Claims (10)
1. The utility model provides a control system of sintering machine cloth, its characterized in that, control system includes feed bin (1), main door (2) and main door aperture detection device, wherein:
the discharge hole of the storage bin (1) is communicated with the main door (2);
the main door (2) is provided with a bearing (3), and the main door (2) can rotate around the bearing (3) under the driving of a driving device (4), so that the opening degree of the main door (2) can be adjusted;
the main door opening degree detection device comprises a displacement sensor (5), wherein the displacement sensor (5) is used for detecting the displacement of the main door (2);
the displacement sensor (5) is connected to a data processor for calculating a main door opening value from an output signal of the displacement sensor (5).
2. A control system of sintering machine burden distribution according to claim 1, characterized in that the displacement sensor (5) is a stay wire displacement sensor.
3. The system for controlling the distribution of sintering machines according to claim 2, characterized in that one end of the stay wire displacement sensor is fixed on the side wall of the main door (2) and the other end is fixed on the silo (1).
4. A control system of sintering machine burden distribution according to claim 3, characterized in that the fixing point between the stay wire displacement sensor and the main door (2) is close to the arc edge of the main door (2).
5. The control system of sintering machine burden distribution according to claim 4, characterized in that the range of the output signal of the displacement sensor (5) is 4-20 mA.
6. A method for controlling the material distribution of a sintering machine is characterized in that a control system of the material distribution of the sintering machine according to any one of claims 1 to 5 is utilized, a plurality of auxiliary doors are arranged on a main door in the control system, valve positioners are correspondingly arranged on the plurality of auxiliary doors, the valve positioners are connected with a data processor, the data processor is also connected with a layer thickness detection device,
the method comprises the following steps:
setting a given material layer thickness value according to the production requirement of the material layer thickness, and setting the opening degree of a main door according to the given material layer thickness value;
the stock bin unloads according to the opening degree of the main door, and the layer thickness detection device detects the thickness of the material layer to obtain the current actual thickness of the material layer;
and adjusting the corresponding auxiliary opening degree through the valve positioner according to the difference value between the material layer thickness given value and the current actual material layer thickness.
7. The method for controlling distribution of sintering machines according to claim 6, wherein the setting of the opening degree of the main door according to the given value of the thickness of the material layer comprises:
setting a preset opening value of the main door according to a given material layer thickness value, and driving the main door to operate by using a driving device;
according to the operation of the main door, the displacement sensor outputs a current signal;
calculating the current displacement and the current opening value of the main door according to the current signal;
and if the current opening value is equal to the preset opening value, stopping the driving device.
8. The method of claim 7, wherein said calculating a current displacement and a current opening value of said main door based on said current signal comprises:
calculating the current displacement of the main door according to the current signal;
and calculating the percentage of the current displacement amount to the maximum displacement amount of the main door to obtain the current opening value, wherein the maximum displacement amount of the main door corresponds to a current signal output by the displacement sensor in a full-scale process.
9. The method of claim 8, wherein said calculating the current displacement of the main door based on the current signal comprises:
converting the current signal into a scale displacement, wherein the scale displacement is the displacement of the displacement sensor;
and calculating the difference value between the maximum displacement of the displacement sensor and the displacement of the scale to obtain the current displacement of the main door.
10. The method for controlling the distribution of the sintering machine according to claim 6, wherein the adjusting of the corresponding auxiliary opening degree by the valve positioner according to the difference value between the given value of the bed thickness and the current actual bed thickness comprises:
if the difference value between the material layer thickness given value and the current actual material layer thickness is larger than zero, the opening of the auxiliary door is increased;
and if the difference value between the material layer thickness given value and the current actual material layer thickness is smaller than zero, reducing the opening of the auxiliary valve.
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| CN106705671A (en) * | 2015-11-13 | 2017-05-24 | 重庆市涪陵三海兰陵有限责任公司 | Sintering machine material layer thickness control device based on radar detection technology |
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- 2019-10-11 CN CN201910964569.2A patent/CN110657680A/en active Pending
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| CN201297849Y (en) * | 2008-11-12 | 2009-08-26 | 山西太钢不锈钢股份有限公司 | Automatic distribution control device of a sintering machine |
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Application publication date: 20200107 |