CN102032786A - Method and system for adjusting two large flues of sintering machine - Google Patents
Method and system for adjusting two large flues of sintering machine Download PDFInfo
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- CN102032786A CN102032786A CN 200910178550 CN200910178550A CN102032786A CN 102032786 A CN102032786 A CN 102032786A CN 200910178550 CN200910178550 CN 200910178550 CN 200910178550 A CN200910178550 A CN 200910178550A CN 102032786 A CN102032786 A CN 102032786A
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Abstract
The invention discloses a method and a system for adjusting two large flues of a sintering machine. The method comprises the following steps of: setting air volume needed for production as target air volume of fans; controlling the opening of air doors of the two fans to increase alternately and stepwise; and when the target air volume of the two fans is achieved, stopping the control operation. By using the method and the system, the air doors of the two fans are opened alternately and stepwise, so that the air volume of the two fans is increased alternately and stepwise until the air volume needed for production is achieved. Simultaneously, the current balance state of the two fans is detected and the opening of the air doors of the fans is adjusted at any time according to the current balance state so as to ensure no breakdown and imbalance beyond the reasonable range of the two fans during production and greatly improve the working efficiency.
Description
Technical field
The present invention relates to metallurgy sintered equipment technical field, particularly a kind of method and system that realize that the two large flues of sintering machine are regulated.
Background technology
In steel sintering equipment, the large flue of sintering machine is that the air communication that sintering pallet is come is crossed the passage that main exhauster is discharged from chimney.And be subjected to the restriction of factors such as structure and material, and the above sintering machine of the 300 square meters commonly used at present pair large flues that adopt more, wherein two main exhausters are arranged in parallel, concentric stack; As depicted in figs. 1 and 2, blower fan 2 air communication that chassis is come is crossed large flue 1 and air door 3 is extracted out and discharged from chimney 4.
Wherein, though two large flues arranging in the sintering machine are relatively independent, but in actual production, because the load of two large flues can not all guarantee balance at any time, so having two flues goes here and there the situation of wind mutually and occurs, especially there is the common segment part in two large flues, as shown in Figure 2, influence to two typhoon machines when string wind occurring is just more obvious: when string wind occurring, because two typhoon machines is load unbalanced, can cause the air mass flow of chassis sintering deposit on two flues inconsistent, causes the sintering quality difference of chassis left and right sides sintering deposit, and then cause a side burning, and the opposite side burning is not saturating; In addition, part air quantity in-fighting between two typhoon machines when string wind occurring, thus also can influence the service efficiency of blower fan; Even under extreme case; the situation that may cause a typhoon machine to blow an other typhoon machine occurs: promptly the interior air-flow of large flue has driven the interior air-flow of another one large flue; cause a typhoon machine band two typhoon machines load; the typhoon machine that makes surpasses rated power operation; and an other typhoon machine is blown; its running load is lower than unloaded load, thereby causes a typhoon organizational security to protect tripping operation, and what influence was produced carries out continuously.
Thereby, in actual production,, just must adjust the load of blower fan, thereby avoid the appearance of accident by regulating fan delivery for keeping existing balance between the two typhoon machines; And mainly be to rely on artificial the participation at present, promptly Ventilator Room post operation personnel in time find and in time regulate, but the obvious efficient of this mode is very low, and owing to can't in time adjust the collapse that can cause blower fan system, what influence was produced normally carries out.
Summary of the invention
In view of this, in order to solve the deficiency of existing manual adjustment air quantity, the embodiment of the invention provides a kind of method and system that realize that the two large flues of sintering machine are regulated, and the energy imbalance of zone of reasonableness does not appear collapsing and exceeding in the two typhoon machines that can guarantee in process of production, has improved operating efficiency.
For this reason, the technical scheme that provides of the embodiment of the invention is as follows:
A kind of method that realizes that the two large flues of sintering machine are regulated comprises:
The target air quantity of default blower fan is for producing required air quantity;
The throttle opening of controlling two typhoon machines replaces stepping and rises;
After reaching the target air quantity, two typhoon machines stop control operation.
Preferably, come in the following manner to determine whether current fan delivery reaches the target air quantity: utilize the fan delivery and the proportionate relationship of blower fan electric current to obtain the corresponding blower fan electric current of production institute required airflow; Detect the blower fan electric current, when described blower fan electric current has reached the blower fan electric current of production institute required airflow correspondence, determine that current fan delivery is the target air quantity.
Preferably, this method also comprises: replace in control two air door of fan apertures and detect two blower fan electric currents when stepping is risen, and adjust throttle opening according to the electric current of two blower fans.
Preferably, describedly adjust throttle opening according to two blower fan electric currents and comprise: when two air door of fan apertures equate, if two blower fan current imbalances, the throttle opening of then that electric current is less blower fan correspondence compared to the bigger air door of fan aperture of electric current some number of degrees that rise, till the electric current of two blower fans reaches balance more; The less air door of fan aperture step-lengths that rise of wherein said electric current are 1 degree more.
Preferably, this method also comprises: detect two blower fan electric currents, if wherein the electric current of a typhoon machine reduces suddenly, then the air door of its corresponding blower fan is opened greatly, till the electric current between the two typhoon machines reaches new balance.
Preferably, this method also comprises: detect two blower fan electric currents, if the dynamo-electric stream of a typhoon sharply reduces, and the dynamo-electric stream of another typhoon sharply increases, the air door of the blower fan that sharply reduces of close current then, and open air door again dragging the state of single flue in the current stabilization of another typhoon machine after.
Preferably, this method also comprises: if two blower fan electric currents still do not reach poised state after adjusting, then with two typhoon machine air door Close Alls, carry out regulating step again.
Preferably, to replace the step-length that stepping rises be 1 degree to the throttle opening of described two typhoon machines.
A kind of system that realizes that the two large flues of sintering machine are regulated comprises: unit, control module and processing unit are set; Wherein, the described unit that is provided with is in order to being set at blower fan target air quantity with production institute required airflow, and is notified to described control module and processing unit; Described control module in order to described the unit be set be provided with the target air quantity after, the throttle opening of controlling two typhoon machines replaces stepping and rises; Described processing unit is in order to detecting the air quantity of two typhoon machines, and when described fan delivery reach described the target air quantity that the unit is provided with is set after, notify described control module to stop control operation.
Preferably, described processing unit comprises: acquisition module and detection module; Wherein, described acquisition module is used to utilize the fan delivery and the proportionate relationship of blower fan electric current to obtain the corresponding blower fan electric current of production institute required airflow; Described detection module is used to detect the blower fan electric current, and when described blower fan electric current has reached the blower fan electric current of production institute required airflow correspondence, notifies described control module to stop control operation.
Preferably, this system also comprises: adjustment unit, be used for replacing when stepping rises at the throttle opening that described control module is controlled two typhoon machines, and detect two blower fan electric currents, and adjust throttle opening according to the electric current of two blower fans.
Preferably, this system also comprises: balancing unit, be used to detect two blower fan electric currents, and when wherein the electric current of a typhoon machine reduces suddenly, notify described control module that the air door of its corresponding blower fan is opened greatly, till the electric current between the two typhoon machines reaches new balance; Perhaps, when the dynamo-electric stream of a typhoon sharply reduces, and the dynamo-electric stream of another typhoon is when sharply increasing, and notifies the air door of the blower fan that described control module close current sharply reduces, and notifies described control module to open its air door dragging the state of single flue in the current stabilization of another typhoon machine after.
By above technical scheme provided by the invention as seen, open by the alternately stepping of controlling two air door of fan, make the air quantity of two typhoon machines replace the stepping rising mutually, until reaching production institute required airflow, detect the current balance type state of two blower fans simultaneously, and adjust the aperture of air door of fan at any time according to described current balance type state, thus guaranteed that the energy imbalance of zone of reasonableness does not appear collapsing and exceeding in two typhoon machines in process of production, and improved operating efficiency greatly.
Description of drawings
Fig. 1 is the structural representation of the two large flues of sintering machine in the prior art;
Fig. 2 is the vertical view of the two large flues of sintering machine in the prior art;
Fig. 3 is the method flow schematic diagram of first embodiment of the invention;
Fig. 4 is the structural representation that the air door of fan in the first embodiment of the invention is opened;
Fig. 5 is the system architecture schematic diagram of fifth embodiment of the invention.
The specific embodiment
In order to make those skilled in the art person understand the present invention program better, and above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Referring to Fig. 3, Fig. 3 is two large flue control method schematic flow sheets of first embodiment of the invention; Wherein, this method comprises:
Step 301: the target air quantity that production institute required airflow is set at blower fan;
After the starting of two typhoon machines finishes, the air door of two typhoon machines all is in closed condition, this moment, two typhoon machines all were in the no-load running state: promptly be not with air to go out blower fan during two typhoon machine wheel rotation, the load of blower fan does not have airload for the load that overcomes the blower fan resistance, at this moment the load minimum of blower fan; Even it should be noted that certainly air door is closed fully in actual production, also can not intercept air fully and do not allow it flow through, thereby usually 5% following throttle opening is considered as the air door closed condition in the embodiment of the invention.At actual demand, production institute required airflow is set at the target air quantity of two typhoon machines respectively then.
Step 302: the throttle opening of controlling two typhoon machines replaces stepping and rises;
Concrete, the air door of controlling two typhoon machines replaces stepping automatically to be opened, and the air door A that for example controls blower fan 1 opens 1 degree earlier, and the air door B that controls blower fan 2 then opens 1 degree again, certainly concrete throttle opening can be adjusted according to actual conditions, replaces stepping as the air door of two blower fans and opens 2 degree etc.;
Wherein, the air door of every typhoon machine is opened referring to the air door of fan shown in Fig. 4 and is opened schematic diagram: control length-adjustable throttle linkage 31 and open certain number of degrees by universal joint 32 drive air doors 3, thereby make blower fan can from large flue 1, extract the air-flow of certain air quantity out, the mode that certain concrete control air door is opened also can adopt existing other modes to carry out, and present embodiment repeats no more; Wherein, the variation of throttle opening can cause the variation of fan delivery, the variation of air door air quantity can cause the variation of blower fan load, and the variation of blower fan load can be reflected in the electric current variation, thereby in the process that described air door of fan is opened, if the electric current of two blower fans changes balance, show that then the air quantity of current two blower fans also is in poised state;
Further, because two air door of fan apertures are alternately upwards, thereby also be alternately to increase by the air quantity that two air door of fan pass through, and because the rising of two air door of fan apertures is to carry out in the mode of stepping, thereby make the air quantity that passes through by two air door of fan also increase gradually; And because air door can cause the variation of blower fan load by the variation of air quantity, so in the process that the air quantity through two air door of fan alternately increases gradually, the load of described two blower fans also is alternately to increase gradually, this has just been avoided because two air door of fan are directly all opened, make its air quantity that passes through increase the situation that caused two blower fans load increases suddenly suddenly, thereby can effectively control the energy imbalance that zone of reasonableness does not appear collapsing and exceeding in two typhoon machines in process of production, thereby can improve the operating efficiency of blower fan greatly.
Step 303: after two typhoon machines reach the target air quantity, stop control operation.
As mentioned above, the variation of throttle opening can cause the variation of fan delivery, and the variation of fan delivery can cause the variation of blower fan load, the variation of blower fan load can be reflected on the electric current, thereby present embodiment proposes and can determine whether current fan delivery has reached the target air quantity according to the blower fan electric current, certainly also can determine that whether current fan delivery has reached the target air quantity, repeats no more herein by other modes;
For example: if the blower fan rated current is 461A, the nominal air delivery of blower fan is 19800 cubic metres/minute, and cube being directly proportional of the air quantity of blower fan with the power of blower fan, square being directly proportional of the power of blower fan and blower fan electric current, so the air quantity of blower fan is directly proportional with 2/3 power of electric current in theory, wherein present embodiment is ignored and is overcome the influence of resistance institute work to electric current; Thereby, if production institute required airflow is 19800 cubic metres/timesharing, the blower fan electric current of its production institute required airflow correspondence is 461A, also be set at 19800 cubic metres/timesharing by abovementioned steps with the target air quantity of blower fan this moment, the electric current of correspondence also was 461A when then blower fan reached the target air quantity, so when the electric current of described blower fan reaches 461A, can determine that the current air quantity of described blower fan has reached 19800 cubic metres/minute of target air quantity.In addition, it should be noted that usually described air door can't be opened fully when blower fan reaches the target air quantity and stops to regulate, in the actual production according to production requirement, the common aperture scope of the aperture of described air door 50～70 spend between.
The embodiment of the invention two has also proposed a kind of pair of large flue control method, and the method for this method and the foregoing description one is similar, and difference is also to comprise between step 302 of the foregoing description 1 and step 303:
Step 304: controlling the alternately upwards two blower fan electric currents that detect simultaneously of two air door of fan apertures, and adjusting throttle opening according to the electric current of two blower fans; Concrete, can realize by following manner, but be not limited thereto:
When control two typhoon machine apertures alternately rise, detect two blower fan electric currents, which typhoon machine air door electric current according to two typhoon machines in the described two throttle opening uphill process decides open earlier or open more: under the normal condition, air door is opened greatly more, the blower fan load is big more, the electric current of blower fan is also just big more, but two flues of twin flue system can influence each other, so in the process of the interleaved air door of two blower fans, the situation that the electric current incomplete equilibrium of two typhoon machines may occur, promptly when two air doors are staggered reach certain aperture after, the two typhoon electromechanics difference to some extent that fails to be convened for lack of a quorum; At this moment, present embodiment proposes when throttle opening equates, if two blower fan current imbalances, the throttle opening of then controlling the blower fan correspondence that electric current is less compared to the bigger air door of fan aperture of electric current some number of degrees that rise more, till the electric current of two blower fans reaches balance, and then the load of balance two blower fans; The less air door of fan aperture of the wherein said electric current step-lengths that rise can be adjusted according to actual conditions more, can not cause with each adjusting that the air-flow acute variation is a principle in the twin flue, select 1 degree usually.
It should be noted that, after adjusting air door, original air balance promptly changes in the large flue, usually need certain hour and set up new balance, if thereby present embodiment proposes electric current at two typhoon machines after the air door adjustment and do not have big variation can think that its balance sets up in the time about 10s, the certainly concrete time can be determined according to actual conditions.
In addition, the embodiment of the invention three proposes on the basis of the foregoing description one, and this pair large flue control method also can comprise:
Step 305: in sintering production process,, then the air door of two typhoon machines is regulated if the load of two typhoon machines is seriously uneven, make it return in the range of balance after, return to production institute required airflow again, what guarantee to produce carries out smoothly;
Concrete, the load of blower fan is to regulate according to the size of throttle opening, under normal situation, after the air door of fan aperture increased, air quantity increased, the blower fan electric current also increases, corresponding air door load also increases, and if this moment wherein the electric current of a typhoon machine reduce suddenly, then control the air door of its corresponding blower fan opened greatly, in order to increase this electric current load of the blower fan of minimizing suddenly, so that reach new balance between the two typhoon machines.
In addition, the embodiment of the invention four proposes on the basis of the foregoing description one, and this pair large flue control method also can comprise:
Step 306: when the dynamo-electric stream of a typhoon sharply reduces, the dynamo-electric stream of another typhoon sharply increases, the air door of the blower fan that sharply reduces of close current then, and open air door again dragging the state of single flue in the current stabilization of another typhoon machine after;
Concrete, in actual production process, if the dynamo-electric stream of a typhoon sharply reduces, and the situation that the electric current of another typhoon machine sharply increases the air door after-current perhaps occurs opening and does not increase anti-situation of falling, and this kind situation illustrates that a typhoon machine is just being blown by an other typhoon machine, this moment is if open air door, then can make the wind that blows more unobstructed, make typhoon machine load increase the weight of, the situation that another typhoon machine load reduces also increases the weight of; At this, present embodiment proposes to close fully this moment the sharply air door of the blower fan of minimizing of load, also be the air door of fan that complete close current sharply reduces, make its current stabilization to no-load current, thereby make the current stabilization of another typhoon machine drag the state of single flue; And then slowly open air door, make it recover normal duty.
It should be noted that, in concrete production operation, if after the adjustment through the various embodiments described above method, if this moment, the electric current of two blower fans did not still reach poised state, then with the air door Close All of two typhoon machines, return to normal condition execution in step 301 again, specifically, repeat no more herein referring to the method step of the various embodiments described above.
The two large flue control methods that provided by above each embodiment as can be seen, by controlling alternately opening of two air door of fan, make the air quantity of two typhoon machines alternately rise mutually, until reaching production institute required airflow, detect the current balance type state of two blower fans simultaneously, and adjust the aperture of air door of fan at any time according to described current balance type state, thus guaranteed that the energy imbalance of zone of reasonableness does not appear collapsing and exceeding in two typhoon machines in process of production, and improved operating efficiency greatly.
Based on above-mentioned thought, the fifth embodiment of the present invention also provides a kind of system that realizes that the two large flues of sintering machine are regulated, and as shown in Figure 5, comprising: unit 501, control module 502 and processing unit 503 are set; Wherein,
The described unit 501 that is provided with is in order to being set at blower fan target air quantity with production institute required airflow, and is notified to described control module 502 and processing unit 503;
Described control module 502 in order to described unit 501 be set be provided with the target air quantity after, the throttle opening of controlling two typhoon machines alternately rises;
Described processing unit 503 is in order to detecting the air quantity of two typhoon machines, and when described fan delivery reach described the target air quantity that unit 501 is provided with is set after, notify described control module 502 to stop control operation.
Wherein, in the specific implementation, described processing unit 503 also can comprise: acquisition module and detection module; Wherein, described acquisition module is used to utilize the fan delivery and the proportionate relationship of blower fan electric current to obtain the corresponding blower fan electric current of production institute required airflow; Described detection module is used to detect the blower fan electric current, and when described blower fan electric current has reached the blower fan electric current of production institute required airflow correspondence, notifies described control module 502 to stop control operation.
In addition, the system that the two large flues of above-mentioned realization sintering machine are regulated also can comprise: adjustment unit, be used for detecting two blower fan electric currents, and adjusting throttle opening according to the electric current of two blower fans in the alternately upwards while of throttle opening of described control module 502 controls two typhoon machines.
Based on the system of the various embodiments described above, in order to handle the unbalanced phenomenon of two blower fans that occurs in process of production, this system also can comprise: the balancing unit that is used to detect two blower fan electric currents;
When wherein the electric current of a typhoon machine reduced suddenly, described balancing unit notified described control module 502 that the air door of its corresponding blower fan is opened greatly, till the electric current between the two typhoon machines reaches new balance; And when the sharply minimizing of the dynamo-electric stream of a typhoon, when the dynamo-electric stream of another typhoon sharply increases, described balancing unit is notified the air door of the blower fan that described control module close current sharply reduces, and notifies described control module to open its air door dragging the state of single flue in the current stabilization of another typhoon machine after.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the embodiment of the invention.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation of the spirit or scope that do not break away from the embodiment of the invention in other embodiments.Therefore, the embodiment of the invention will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Above-described embodiment of the present invention does not constitute the qualification to protection domain of the present invention.Any modification of being done within the spirit and principles in the present invention, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a method that realizes that the two large flues of sintering machine are regulated is characterized in that, comprising:
The target air quantity of default blower fan is for producing required air quantity;
The throttle opening of controlling two typhoon machines replaces stepping and rises;
After reaching the target air quantity, two typhoon machines stop control operation.
2. method according to claim 1 is characterized in that, comes in the following manner to determine whether current fan delivery reaches the target air quantity:
Utilize the fan delivery and the proportionate relationship of blower fan electric current to obtain the corresponding blower fan electric current of production institute required airflow;
Detect the blower fan electric current, when described blower fan electric current has reached the blower fan electric current of production institute required airflow correspondence, determine that current fan delivery is the target air quantity.
3. method according to claim 1 is characterized in that, this method also comprises:
When control two air door of fan apertures replace the stepping rising, detect two blower fan electric currents, and adjust throttle opening according to the electric current of two blower fans.
4. to go 3 described methods according to right, it is characterized in that, describedly adjust throttle opening according to two blower fan electric currents and comprise:
When two air door of fan apertures equated, if two blower fan current imbalances, the throttle opening of then that electric current is less blower fan correspondence compared to the bigger air door of fan aperture of electric current some number of degrees that rise, till the electric current of two blower fans reaches balance more; The less air door of fan aperture step-lengths that rise of wherein said electric current are 1 degree more.
5. method according to claim 1 is characterized in that, this method also comprises:
Detect two blower fan electric currents,, then the air door of its corresponding blower fan is opened greatly, till the electric current between the two typhoon machines reaches new balance if wherein the electric current of a typhoon machine reduces suddenly.
6. method according to claim 1 is characterized in that, this method also comprises:
Detect two blower fan electric currents, if the dynamo-electric stream of a typhoon sharply reduces, and the dynamo-electric stream of another typhoon sharply increases, the air door of the blower fan that sharply reduces of close current then, and open air door again dragging the state of single flue in the current stabilization of another typhoon machine after.
7. according to claim 5 or 6 described methods, it is characterized in that this method also comprises:
If two blower fan electric currents still do not reach poised state after adjusting, then, carry out regulating step again with two typhoon machine air door Close Alls.
8. according to any described method of claim 1 to 6, it is characterized in that:
The step-length that the throttle opening of described two typhoon machines replaces the stepping rising is 1 degree.
9. a system that realizes that the two large flues of sintering machine are regulated is characterized in that, comprising: unit, control module and processing unit are set; Wherein,
The described unit that is provided with is in order to being set at blower fan target air quantity with production institute required airflow, and is notified to described control module and processing unit;
Described control module in order to described the unit be set be provided with the target air quantity after, the throttle opening of controlling two typhoon machines replaces stepping and rises;
Described processing unit is in order to detecting the air quantity of two typhoon machines, and when described fan delivery reach described the target air quantity that the unit is provided with is set after, notify described control module to stop control operation.
10. system according to claim 9 is characterized in that, described processing unit comprises: acquisition module and detection module; Wherein,
Described acquisition module is used to utilize the fan delivery and the proportionate relationship of blower fan electric current to obtain the corresponding blower fan electric current of production institute required airflow;
Described detection module is used to detect the blower fan electric current, and when described blower fan electric current has reached the blower fan electric current of production institute required airflow correspondence, notifies described control module to stop control operation.
11. system according to claim 9, it is characterized in that this system also comprises: adjustment unit is used for replacing when stepping rises at the throttle opening that described control module is controlled two typhoon machines, detect two blower fan electric currents, and adjust throttle opening according to the electric current of two blower fans.
12. system according to claim 9, it is characterized in that, this system also comprises: balancing unit, be used to detect two blower fan electric currents, and when wherein the electric current of a typhoon machine reduces suddenly, notify described control module that the air door of its corresponding blower fan is opened greatly, till the electric current between the two typhoon machines reaches new balance; Perhaps, when the dynamo-electric stream of a typhoon sharply reduces, and the dynamo-electric stream of another typhoon is when sharply increasing, and notifies the air door of the blower fan that described control module close current sharply reduces, and notifies described control module to open its air door dragging the state of single flue in the current stabilization of another typhoon machine after.
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| CN103673615A (en) * | 2013-12-26 | 2014-03-26 | 中冶长天国际工程有限责任公司 | Energy saving method and device for main exhaust fan |
| CN103673615B (en) * | 2013-12-26 | 2015-07-29 | 中冶长天国际工程有限责任公司 | A kind of main exhauster power-economizing method and device |
| CN107747555A (en) * | 2017-10-17 | 2018-03-02 | 珠海格力电器股份有限公司 | Blower control method, controller, control device and wall-hung boiler and gas heater |
| CN107588031A (en) * | 2017-10-24 | 2018-01-16 | 西安热工研究院有限公司 | A kind of online dynamic switching method of power station Axial Fan with Adjustable Vanes rotating speed |
| CN107588031B (en) * | 2017-10-24 | 2019-03-01 | 西安热工研究院有限公司 | A kind of online dynamic switching method of power station Axial Fan with Adjustable Vanes revolving speed |
| CN113742990A (en) * | 2020-05-28 | 2021-12-03 | 中冶长天国际工程有限责任公司 | Method and system for predicting sintering cake fracture moment of sintering machine tail |
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