CN102442536B - Discharge controlling method for scattered weighing hoppers under blast furnace tank - Google Patents

Discharge controlling method for scattered weighing hoppers under blast furnace tank Download PDF

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CN102442536B
CN102442536B CN 201110275179 CN201110275179A CN102442536B CN 102442536 B CN102442536 B CN 102442536B CN 201110275179 CN201110275179 CN 201110275179 CN 201110275179 A CN201110275179 A CN 201110275179A CN 102442536 B CN102442536 B CN 102442536B
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discharge
scale hooper
pointer
execution
sequence valve
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CN102442536A (en
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徐岸非
李光荣
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Wisdri Engineering and Research Incorporation Ltd
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Wisdri Engineering and Research Incorporation Ltd
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Abstract

The invention discloses a discharge controlling method for scattered weighing hoppers under a blast furnace tank. The method comprises the following steps of: 10, determining the discharge sequence value of the scattered weighing hoppers; and 30, determining the weighing hoppers, the discharge sequence value of which is equal to the value of a current discharge pointer, and performing discharge, wherein the discharge pointer is used for endowing the scattered weighing hoppers with discharge authorities and identifying the scattered weighing hoppers in a discharge state. According to the method, the problems of material stacking and/or material interruption during discharging of the blast furnace tank can be effectively solved.

Description

Discharge controlling method for scattered weighing hoppers under blast furnace tank
Technical field
The present invention relates to blast furnace discharge control technology field, particularly a kind of discharge controlling method for scattered weighing hoppers under blast furnace tank.
Background technology
In the production practice of blast furnace, usually need edge or the center of some feed distribution in the stove, under given conditions, also need with plurality of raw materials in certain sequence in stove by the edge to central distribution or by middle mind-set marginal distribution.This can adjust arbitrarily with regard to the order that requires various raw materials to enter stove, namely disperses the discharge order of scale hooper to adjust arbitrarily under the blast furnace, has so just produced fracture and/or windrow problem.
Summary of the invention
One of purpose of the present invention provides a kind of for solving the discharge controlling method for scattered weighing hoppers under blast furnace tank that produces windrow and/or fracture problem when the blast furnace discharge.
According to an aspect of the present invention, provide a kind of discharge controlling method for scattered weighing hoppers under blast furnace tank, comprising:
Step 10, definite discharge sequence valve that disperses scale hooper;
Step 30, determine discharge sequence valve and the scale hooper that the value of current discharge pointer equates, carry out discharge; Described discharge pointer is used for giving the dispersion scale hooper that disperses scale hooper discharge authority and sign to be in the discharge state.
Further, described step 30 is determined discharge sequence valve and the scale hooper that the value of discharge pointer equates, carries out also comprising before the discharge:
Step 20, with discharge pointer and the initialization of guide's pointer, i.e. described discharge pointer=1, described guide's pointer=1; Described guide's pointer is used for inquiry and identifies the dispersion scale hooper that is about to obtain the discharge authority.
Further, described step 30 is determined discharge sequence valve and the scale hooper that the value of discharge pointer equates, carries out discharge and comprises:
Step 302, search the scale hooper that described discharge sequence valve equates with the value of described discharge pointer;
Step 303, judge whether described scale hooper participates in this discharge, if then execution in step 305, if not, then execution in step 304;
Step 304, with described guide's pointer+1, described discharge pointer=described guide's pointer+1 returns execution in step 302;
Step 305, the described scale hooper of control are opened discharge, and execution in step 306;
Step 306, with described guide's pointer+1, and execution in step 307;
Step 307, search the scale hooper that the discharge sequence valve equates with current guide's pointer value, and execution in step 308;
Step 308, judge described guide's pointed scale hooper whether before the scale hooper of described discharge pointed, if then execution in step 310, if not, then execution in step 309;
Step 309, material is heavy in the scale hooper at discharge just
Figure BDA0000091866830000021
The time, execution in step 311, and this scale hooper closed, wherein, described v 0Running velocity v for the feed belt 0, described i is just at the sequence valve of the scale hooper of discharge, described j is the sequence valve of the scale hooper that is about to discharge, described K jThe empty lead * of scale hooper is W j, described v jBe discharge velocity, described L is per two distances of disperseing between the scale hooper;
Step 310, currently just after the scale hooper emptying of discharge, delay time, and execution in step 312;
Step 311, with described discharge pointer=described guide's pointer;
Step 312, judge described discharge pointer value whether＞=maxim; If then the discharge process finishes, and if not, returns execution in step 303.
Further, the time of time-delay is in the described step 310
Figure BDA0000091866830000022
Described v 0Running velocity v for the feed belt 0, described i is just at the sequence valve of the scale hooper of discharge, and described j is the sequence valve of the scale hooper that is about to discharge, and described L is per two distances of disperseing between the scale hoopers.
According to a kind of discharge controlling method for scattered weighing hoppers under blast furnace tank provided by the invention, can effectively solve the problem that when the blast furnace discharge, produces windrow and/or fracture.
Description of drawings
Fig. 1 is the discharging control system of dispersion weighting hopper in blast furnace framework map that the embodiment of the invention provides;
Fig. 2 is the discharge controlling method for scattered weighing hoppers under blast furnace tank schematic flow sheet that the embodiment of the invention provides;
Fig. 3 determines discharge sequence valve and the scale hooper that the value of discharge pointer equates in the method shown in Figure 2, carry out the schematic flow sheet of discharge;
Fig. 4 is that a certain blast furnace that the embodiment of the invention provides disperses the scale hooper distribution schematic diagram.
The object of the invention, function and advantage are described further with reference to accompanying drawing in connection with embodiment.
The specific embodiment
As shown in Figure 1, the discharging control system of dispersion weighting hopper in blast furnace that the embodiment of the invention provides, it comprises control unit 1, weight transmitter 2 and scale hooper 3.Wherein control unit 1 is used for control scale hooper 3 discharges.Be elaborated as for the embodiment that how to control in connection with shown in Figure 2.Control unit 1 can be realized with PLC.Each scale hooper 3 all disposes limit switch and weight sensor.Wherein, limit switch comprises and reaches the position and close two places that put in place, by common cable Access Control unit 1.Can identify and to reach position, indefinite position (neither reach position also do not put in place in the pass), close the signal such as put in place by this limit switch.Weight sensor is converted to electric signal with scale hooper weight and sends into corresponding weight transmitter, and by Profibus-DP bus Access Control unit 1.Can accurately obtain the gravimetric value of scale hooper by weight sensor, thereby identify the signal that discharging is empty, material is full.
The discharge controlling method for scattered weighing hoppers under blast furnace tank that the embodiment of the invention proposes is based on two pointer inquiry modes.This control logic is as follows: take near the dispersion scale hooper of blast furnace as before, away from the dispersion scale hooper of blast furnace be after.If be about to the dispersion scale hooper K of discharge iJust be positioned at the dispersion scale hooper K at discharge jThe front, in order to realize in the discharge process not windrow, just then need the dispersion scale hooper K at discharge jThe time-delay regular hour just allows the soon dispersion scale hooper K of discharge after discharge finishes iObtain the discharge authority; If be about to the dispersion scale hooper K of discharge iJust be positioned at the dispersion scale hooper K at discharge jThe back, in order to realize in the discharge process not fracture, just then need the dispersion scale hooper K at discharge jRegular hour just allows the soon dispersion scale hooper K of discharge in advance before discharge finishes iObtain the discharge authority.Idiographic flow will describe at Fig. 2.
As shown in Figure 2, control unit 1 can by disperseing the scale hooper discharge under the following flow process control blast furnace, may further comprise the steps:
Step 10, definite discharge sequence valve that disperses scale hooper;
Step 20, with discharge pointer and the initialization of guide's pointer, i.e. described discharge pointer=1, described guide's pointer=1; Described guide's pointer is used for inquiry and identifies the dispersion scale hooper that is about to obtain the discharge authority.
Step 30, determine discharge sequence valve and the scale hooper that the value of current discharge pointer equates, carry out discharge; Described discharge pointer is used for giving the dispersion scale hooper that disperses scale hooper discharge authority and sign to be in the discharge state.Referring to Fig. 3, this step specifically comprises:
Step 302, search the scale hooper that described discharge sequence valve equates with the value of described discharge pointer;
Step 303, judge whether described scale hooper participates in this discharge, if then execution in step 305, if not, then execution in step 304;
Step 304, with described guide's pointer+1, described discharge pointer=described guide's pointer+1 returns execution in step 302;
Step 305, the described scale hooper of control are opened discharge, and execution in step 306;
Step 306, with described guide's pointer+1, and execution in step 307;
Step 307, search the scale hooper that the discharge sequence valve equates with current guide's pointer value, and execution in step 308;
Step 308, judge described guide's pointed scale hooper whether before the scale hooper of described discharge pointed, if then execution in step 310, if not, then execution in step 309;
Step 309, material is heavy in the scale hooper at discharge just
Figure BDA0000091866830000041
The time, execution in step 311 is sent the material spacing wave, and this scale hooper is closed, wherein, and described v 0Running velocity v for the feed belt 0, unit is meter per second; Described i is just at the sequence valve of the scale hooper of discharge, and described j is the sequence valve of the scale hooper that is about to discharge, described W jBe K jThe empty lead of scale hooper, v jBe discharge velocity; Described L is per two distances of disperseing between the scale hooper, and unit is rice.
Step 310, currently just after the scale hooper emptying of discharge, delay time, and execution in step 312; The time of time-delay is Described v 0Running velocity v for the feed belt 0, described i is just at the sequence valve of the scale hooper of discharge, and described j is the sequence valve of the scale hooper that is about to discharge, and described L is per two distances of disperseing between the scale hoopers.
Step 311, with described discharge pointer=described guide's pointer;
Step 312, judge described discharge pointer value whether＞=maxim; If then the discharge process finishes, and if not, returns execution in step 303.
The process of discharge controlling method for scattered weighing hoppers under blast furnace tank of the present invention is described below in conjunction with a specific embodiment.
As shown in Figure 4, Feed system disposes 8 dispersion scale hoopers under a certain blast furnace, establishes it and is numbered K 1～K 8, discharge velocity is v 1～v 8(unit: Kilograms Per Second), the distance between per two dispersion scale hoopers is that (unit: rice), the running velocity of feed belt is v to L 0(unit: meter per second), empty lead is set as W 1～W 8(unit: kilogram).8 discharge orders of disperseing scale hoopers can Set arbitrarily, supposes that discharge sequentially is set as 5,3,1,2,6,4,8,7.
When disperseing scale hooper when confirming the setting of discharge order, discharge pointer and guide's pointer are initialised, and the value after the pointer initialization is 1.Search the scale hooper that the discharge sequence valve equates with the value of discharge pointer, at this moment, the value of discharge pointer is 1, so the dispersion scale hooper is K 3The discharge sequence valve with this moment the discharge pointer identical, the dispersion scale hooper of discharge pointed is K so 3Guide's pointer inquire about be about to be in the discharge state the dispersion scale hooper be K 3
Work as K 3The scale hooper gate is opened discharge, the at once stepping of guide's pointer, and its value becomes 2, and inquiring soon, the dispersion scale hooper of discharge is K 4(K 4The discharge sequence valve be 2).Owing to be about to the dispersion scale hooper K of discharge 4Just be in the dispersion scale hooper K at discharge 3The front, in order to guarantee not windrow, therefore disperse scale hooper K 3The time-delay regular hour just allowed to disperse scale hooper K after material was empty 4Discharge.In the present embodiment, the discharge pointer is disperseing scale hooper K 3Time-delay after disperseing the bucket material empty
Figure BDA0000091866830000061
The content of guide's pointer is read in discharge pointer (this moment, the value of discharge pointer became 2, was equivalent to also stepping of discharge pointer itself).This moment the discharge pointer to inquire the dispersion scale hooper that is in the discharge state be K 4Thereby, make K 4Obtain discharge authority and the discharge that opens the sluices.
Work as K 4The scale hooper gate is opened discharge, the at once stepping of guide's pointer, and its value becomes 3.Search current discharge sequence valve and the scale hooper that the value of current guide's pointer equates, inquiring soon, the dispersion scale hooper of discharge is K 2(its discharge sequence valve is 3).Owing to be about to the dispersion scale hooper K of discharge 2Just be in the dispersion scale hooper K at discharge 4The back, in order to guarantee not fracture, therefore disperseing scale hooper K 4Need to shift to an earlier date the regular hour before the material sky with regard to control dispersion scale hooper K 2The beginning discharge.In the present embodiment, work as K 4Interior residue material heavily equals
Figure BDA0000091866830000062
The time, the content of guide's pointer is read in discharge pointer (this moment, the value of discharge pointer became 3, was equivalent to also stepping of discharge pointer itself), this moment the discharge pointer to inquire the dispersion scale hooper that is in the discharge state be K 2Thereby, make K 2Obtain discharge authority and the discharge that opens the sluices.
Guide's pointer and discharge pointer are by the successively stepping of above-mentioned control sequence.Finally, the value of guide's pointer becomes maxim 8 and no longer steppings, when the discharge pointer also become 8 and scale hooper material sky with correspondence after, just finished a complete discharge process.
The discharge controlling method for scattered weighing hoppers under blast furnace tank that the present invention proposes can determine in advance the scale hooper of next discharge and judge it and should shift to an earlier date or delay discharge, thereby can guarantee on the feed belt not windrow, fracture not.
Above-described embodiment is the better embodiment of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.

Claims (2)

1. discharge controlling method for scattered weighing hoppers under blast furnace tank comprises:
Step 10, definite discharge sequence valve that disperses scale hooper;
Step 20, with discharge pointer and the initialization of guide's pointer, i.e. described discharge pointer=1, described guide's pointer=1; Described guide's pointer is used for inquiry and identifies the dispersion scale hooper that is about to obtain the discharge authority;
Step 30, determine discharge sequence valve and the scale hooper that the value of current discharge pointer equates, carry out discharge; Described discharge pointer is used for giving the dispersion scale hooper that disperses scale hooper discharge authority and sign to be in the discharge state; Described step 30 is determined discharge sequence valve and the scale hooper that the value of discharge pointer equates, carries out discharge and comprises:
Step 302, search the scale hooper that described discharge sequence valve equates with the value of described discharge pointer;
Step 303, judge whether described scale hooper participates in this discharge, if then execution in step 305, if not, then execution in step 304;
Step 304, with described guide's pointer+1, described discharge pointer=described guide's pointer+1 returns execution in step 302;
Step 305, the described scale hooper of control are opened discharge, and execution in step 306;
Step 306, with described guide's pointer+1, and execution in step 307;
Step 307, search the scale hooper that the discharge sequence valve equates with current guide's pointer value, and execution in step 308;
Step 308, judge described guide's pointed scale hooper whether before the scale hooper of described discharge pointed, if then execution in step 310, if not, then execution in step 309;
Step 309, material is heavy in the scale hooper at discharge just
Figure FDA00003408832200011
The time, execution in step 311, and this scale hooper closed, wherein, described v 0Running velocity v for the feed belt 0, described i is just at the sequence valve of the scale hooper of discharge, described j is the sequence valve of the scale hooper that is about to discharge, described W jBe the empty lead of scale hooper, described v jBe discharge velocity, described L is per two distances of disperseing between the scale hooper;
Step 310, just after the scale hooper emptying of discharge, delay time current, and execution in step 312;
Step 311, with described discharge pointer=described guide's pointer;
Step 312, judge described discharge pointer value whether=maxim; If then the discharge process finishes, and if not, returns execution in step 302.
2. method according to claim 1 is characterized in that:
The time of time-delay is in the described step 310
Figure FDA00003408832200021
Described v 0Be the running velocity of feed belt, described i is just at the sequence valve of the scale hooper of discharge, and described j is the sequence valve of the scale hooper that is about to discharge, and described L is per two distances of disperseing between the scale hoopers.
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CN102816881B (en) * 2012-09-03 2013-10-30 中冶南方工程技术有限公司 Switching method for double-concentrated hopper under blast furnace tank
CN104296851B (en) * 2014-08-28 2016-08-24 莱芜钢铁集团电子有限公司 Charging of shaft furnace control method and control device

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CN101329562A (en) * 2008-07-28 2008-12-24 中冶长天国际工程有限责任公司 Control method and control system of stock bin set
CN101763061A (en) * 2009-12-29 2010-06-30 中冶南方工程技术有限公司 Blast furnace continuous feeding control way

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CN101329566A (en) * 2008-07-31 2008-12-24 中冶南方工程技术有限公司 Data transfer control method between blast furnace feeding system and blast furnace cloth system
CN101763061A (en) * 2009-12-29 2010-06-30 中冶南方工程技术有限公司 Blast furnace continuous feeding control way

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