• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    METHOD FOR CONTROLLING A TRAY MOVEMENT OF A TRAY, A LOADING DEVICE OF A MINE OVEN, including the movement of a tray on a circular kiln and a spiral with a change in the angular velocity of rotation of the tray around the vertical axis of the furnace depending on its angular position, which is zag from where по along Y CA9 00 F, characterized in that, in order to improve the uniformity of the kiln of a furnace, the change in the angular growth of the rotation of the tray fulfills dependencies. u. (i + Aoi), 1 to UJ - altered velocity; Scr - constant angular velocity of the curve C, F - functions ot-and Aoi, equal respectively to the angular positions and angular displacements of the tray and causing the duration of the charge fall; the following refinement of the speed and the formula FU.dot). g
    公开号:SU1143316A3
    申请号:SU833625447
    申请日:1983-07-27
    公开日:1985-02-28
    发明作者:Лежилль Эдуард；ТИЛЛЕН Ги；Лонарди Эмиль
    申请人:Поль Вюрт С.А. (Фирма)；
    IPC主号:
    专利说明:

    11 The invention relates to a method for controlling the movement of a swinging chute, which can be rotated around two orthogonal axes driven for this by two driving means, independent of each other, to move the end of the chute in concentric circles or in a spiral around the vertical axis. The closest to the invention to the technical essence and the achieved result is the method of controlling the drive of the tray of the charging device of the shaft furnace, including the movement of the tray on the furnace furnace circumference and helix with the change of the angular velocity of rotation of the tray around the vertical axis of the furnace depending on its angular position l However when conducting tests and experiments on a model of this type, it was found that the layers of material laid by the tray are uneven in thickness. If only one layer is considered, then these irregularities would not have negative consequences for the furnace loading. However, irregularities occur for each layer being laid in the same places corresponding to the exact angular position of the trough, so that a layer-by-layer accumulation effect is observed, which ultimately leads to a saddle load level. This disadvantage takes place more or less clearly in all boot devices with gimbal-type chute independently of the means for driving and controlling. The reason for this is that these types of distribution chutes are subjected to diametrically opposed and well-defined places for each rotation in rotation (albeit weak, but nonetheless noticeable) around the longitudinal axis of the axle. During such a turn, the friction at the time of loading through the chute decreases, i.e. the speed of fall increases. The loading material quickly reaches the drop point, and the thickness of the laid layer increases in those places where there is a drop point corresponding to the angular position of the groove in which the turn occurs. The opposite effect occurs at the end of the turn of the chute, when the friction inside it again increases, which leads to a decrease in the thickness of the layer to be deposited. The purpose of the invention is to improve the uniformity of the furnace load. To achieve this goal, according to the method of controlling the drive of the tray of the charging device of the shaft furnace, including the movement of the tray on the furnace's top around the circumference and the helix with a change in the angular velocity of rotation of the tray around the vertical axis of the furnace, depending on its angular position, the change in the angular velocity of the tray is performed dependencies, / -F () where w is the changed angular velocity Lp; the constant angular velocity of the curve E |,, F is the function ei and Le (a, equal respectively to the angular positions and angles of the tray displacement and you the duration of the charge drop, followed by the specification of the speed of the IL by the formula (). In Fig. 1 schematically shows the distribution tray during the discharge of the annular layer in Fig. 2 the inclination of the tray relative to the center; the axis in Fig. 3 is a polar diagram depicting The thickness of the layer of material discharged by the tilting tray is shown in Fig. 4, the polar diagram of the angular velocity, and Fig. 5 is a block diagram of the control circuit of the movement of the tray. FIG. 1 and 2 show a distribution tilting tray at a certain angular position in which it occupies a slope (see Fig. 2) with respect to the vertical axis O and an angular position y (Fig. 1) with respect to the horizontal reference axis, for example the X axis. It is assumed that, when tilted, the groove is rotated in a clockwise direction around the axis O with an angular velocity (A to obtain an annular layer of the feed material on the charge, with the connection u) t. 31G On fng. 1 around 1: means the horizontal projection of the circular trajectory of the downstream end of the groove 2. The loadable material, discharged by the groove, has a trajectory of the fall 3 from the vertical component and an angular component due to UI, i.e. the loading material does not fall to the point at which the gutter is being targeted exactly at the moment when the material is detached from the gutter. Assuming that the particle is detached from the chute when it is in the angular position o, and the groove is moving its rotational motion at a speed of iV in the clockwise direction, the particle’s impact occurs when the point of impact of this particle is somewhere between the dC and y positions, for example, in the oi + J position, i.e. there is an angular displacement between the moment the particle leaves the gutter and the moment it hits the charge layer. The amplitude of the angular displacement fici depends not only on the size of the material} but also on the speed of fall, i.e. Depending on the speed of its fall, the particle reaches the charge faster or slower and its drop point is located before or behind the position of the Forehead. It is this phenomenon that occurs for all swinging distribution chutes with a gimbal suspension, subjecting each rotation to two turns around their longitudinal axis and altering in this connection the friction between the material being loaded and the wall of the chute. This change in friction accelerates or slows the fall of particles. When there is an acceleration, the displacement / Jut decreases, for example, to so that it tends to cause an increase in the thickness of the layer in the place where the offset is shifted by the angle LeC-from the angular position of the groove where this rotation occurred. Also, when there is a retardation, the AoC offset becomes Yes +, which causes a decrease in the thickness of the material layer. This deceleration occurs at the end of the phase of the turn, and the decrease in thickness is followed by a displacement of 4 ° (. + From the angular position in which the chute rotates). In Fig. 3, the thickness of the annular layer of the material is shown in polar coordinates; The silt mixture is charged, and this thickness is proportional to their distance to the original. The if curve represents the average optimum thickness, which can be calculated, for example, by the storage capacity of the storage bin and the surface area of the charge. The 5, .. is an optional circle. The curve represented is the actual thickness of the layer laid by the trough, which is rotated at a constant angular velocity uip and causes the indicated irregularities. of the vector P. The curve f., the contour of which is specially exaggerated, makes it possible to see two positions with a maximum thickness at the points Ep, located in the angular positions O and 180 °, and also two positions with a minimum thickness at the points E , respectively located at angular positions of 90 ° and 270. In FIG. 4 shows a polar diagram, similar to that of FIG. 3, but for angular velocities i). Thus, Wjj is the constant angular velocity for the actual non-uniform layer of FIG. 3. The curve tOj.-curve of the compensated velocity, obtained by changing the curve of the orPO by the formula LO: U) e (oC) The angular velocity for each angular position is represented by the length y. . The function F is determined by the F (ct)) thickness measured before compensation. The purpose of the compensation is that the phenomena caused by the rotation of the groove, and the phenomena caused by a change in the angular velocity, are compensated to obtain a uniformly laid layer, the curve. Pf. FIG. 3 corresponds to curve w of FIG. 3, i.e. the thickness of the layer being laid, by changing the angular velocity according to the indicated formula. Naturally, the curve BC is shifted by the AcL angle with respect to the curve taking into account the fall time. The effect of this angular velocity compensation in FIG. 4 is such that the layer E is modified so as to obtain the curve E being close to the ideal circle, i.e. moving the chute faster at angular positions corresponding to increases in the thickness of the layer along the curve B f. , and more slowly in the angular positions corresponding to smaller layer thicknesses by the curve B |, it tends to reduce these irregularities in the thickness of the layer being laid. The mathematical explanation of the compensation is as follows. Let E (c) be the thickness of the layer for w a constant and representing the irregularities caused by the rotation. Let l (ot) be the thickness of the layer for u) c is a variable without taking into account the non-uniformity caused by rotation. , | The average theoretical thickness determined by the two assumptions (otK (dL) | i.e., the compensated thickness approaches the ideal uniform thickness 8 If the first compensation using the angular velocity control does not yet allow to obtain the desired result, it is possible to use a method of successive approximations and to realize more subtle compensation by integrating by the formula), etc. if necessary. The definition of u) /, (the rig is carried out experimentally or by calculations, since the parameters used for this definition can be measured or calculated. Since the d-function and / J, and the size of the loaded material, the compensated angular velocities d) Wj .. can be determined for different slopes | i and for different sizes. These different values of the compensated angular velocity can be hidden in the memory of the micro-computer, which can calculate the exact value of the compensated angular velocity at each moment by linear interpolation. eloba. FIG. 5 is a flow chart of a control circuit implementation for compensating for the angular velocity of the chute. The microcomputer 4 receives information relating to the inclination p and the type of material being loaded, for calculating the compensated angular velocities. The drive motor 5 of the trough operates according to the control signals of the variator yrnoibtx of speeds 6, including, among other things, an integrated comparator. FIG. 5 denotes the mechanical part of the pulse transmitter 7, the angular velocity detector 8 and the position detector 9, both of which can be combined, since UJ. . The angular velocity detector 8 sends at each moment signals corresponding to the actual speed s 1, and sends them to the speed variator 6. Also, the position detector .9 delivers at each moment signals corresponding to the angular position d of the distribution tray and sprinkles them into the microemi. The microcomputer 4 calculates at each moment on the basis of the information received, i.e. a, D and parameters corresponding to the type of loading material, the compensated angular velocity Nc according to the specified formulas. Signals corresponding to the angular velocity u) c, calculated by the microcomputer 4, on the npaBnktoTCH into the angular velocity variator 6. The built-in comparator compares at each moment the compensated angular velocity u) c with the actual angular velocity Wf, which it receives from the detector 8, and Depending on the result of this comparison, the drive motor 5 is slowed down or accelerated. The proposed method of adjusting the angular velocity of the chute is suitable for a drive device with a circular movement of the tray. The correction device according to the method of operation is also suitable for other drive devices of the tilting tray with a cardan suspension j, for example a tray driven by a pair of hydraulic jacks.
    权利要求:
    Claims (1)
    [1]
    MOVEMENT
    SHAFT FURNACE STEVE Tray on a circle and spiral with change
    METHOD FOR DRIVE CONTROL DEVICE TRAY LOADING k comprising (motion furnace top by
    Fig.1de- altered angular speed; w 0 ~ unchanged angular velocity of the curve
    F - function oL and Δοί, equal respectively to the angular positions and angular displacements of the tray and causing the duration of the fall of the charge;
    followed by speed specification
    Sib 1143316
    1 143316
    I
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    同族专利:
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    US4575790A|1986-03-11|
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    AU563801B2|1987-07-23|
    EP0101846A3|1984-05-23|
    ES524421A0|1984-11-16|
    KR840005570A|1984-11-14|
    LU84303A1|1984-03-22|
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    PL140295B1|1987-04-30|
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    KR920006585B1|1992-08-10|
    JPH0336889B2|1991-06-03|
    PL243129A1|1984-03-12|
    CS545883A2|1987-06-11|
    AT22723T|1986-10-15|
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    JPS5941405A|1984-03-07|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB782486A|1955-03-11|1957-09-04|United States Steel Corp|Swinging spout and drive therefor applicable to the travelling grates of sintering apparatus|
    US3362585A|1965-12-23|1968-01-09|Fischer & Porter Co|Dry chemical feeder|
    US3581070A|1968-11-01|1971-05-25|Nippon Steel Corp|Apparatus for operating a shaft furnace by detecting the falling speed of the charge|
    LU65660A1|1972-07-05|1972-10-30|
    US3929240A|1972-07-05|1975-12-30|Wurth Anciens Ets Paul|Shaft furnace charging process|
    JPS5222802B2|1973-10-12|1977-06-20|
    LU70952A1|1974-09-20|1975-03-06|
    LU77547A1|1977-06-16|1977-09-19|
    NL7707178A|1977-06-29|1979-01-03|Hoogovens Ijmuiden Bv|Device for determining charge distribution in blast furnace - consists of two radar antennae mounted on ball joints, a transmitter and a receiver|
    DE2927316C2|1979-07-06|1980-10-09|Mannesmann Demag Ag, 4100 Duisburg|
    LU83280A1|1981-04-03|1983-03-24|Wurth Paul Sa|METHOD FOR OPERATING AN OSCILLATING CHUTE IN A PRESSURE ENCLOSURE, DEVICE FOR CARRYING OUT THIS METHOD AND INSTALLATION FOR LOADING A TANK OVEN EQUIPPED WITH SUCH A DEVICE|
    LU83370A1|1981-05-18|1983-03-24|Wurth Paul Sa|DEVICE FOR CONTROLLING THE MOVEMENT OF AN OSCILLATING CHUTE AND INSTALLATION FOR LOADING A TANK OVEN EQUIPPED WITH SUCH A DEVICE|
    LU84521A1|1982-12-10|1984-10-22|Wurth Paul Sa|COOLING DEVICE FOR A LOADING INSTALLATION OF A TANK OVEN|LU86822A1|1987-03-24|1988-11-17|Wurth Paul Sa|METHOD AND DEVICE FOR CORRECTING THE FALL TRAJECTORY IN A LOADING INSTALLATION OF A TANK OVEN|
    AT388543B|1987-11-12|1989-07-25|Voest Alpine Ag|CONVEYING DEVICE FOR THE DOSED CONVEYING OF SCHUETTGUT|
    JPH0541046Y2|1988-06-07|1993-10-18|
    LU87938A1|1991-05-15|1992-12-15|Wurth Paul Sa|LOADING SYSTEM FOR A TANK OVEN|
    DE10240219A1|2002-08-28|2004-03-11|Claas Selbstfahrende Erntemaschinen Gmbh|Device for controlling a transfer device|
    EP1662009A1|2004-11-26|2006-05-31|VAI IndustriesLtd.|Device for distributing material into a furnace|
    AT502479B1|2005-10-24|2007-04-15|Voest Alpine Ind Anlagen|METHOD AND DEVICE FOR CHARGING INSERTS|
    CN101580886B|2008-05-13|2010-09-22|中冶赛迪工程技术股份有限公司|Bulk material distributing device|
    EP2955236A1|2014-06-13|2015-12-16|Siemens VAI Metals Technologies GmbH|Method and apparatus for controlling the fill height of a raw material in a blast furnace|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    LU84303A|LU84303A1|1982-07-28|1982-07-28|METHOD AND DEVICE FOR CONTROLLING THE MOVEMENT OF AN OSCILLATING CHUTE AND APPLICATION TO A LOADING INSTALLATION OF A TANK OVEN|
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