JP2000118718A - Granular material level control method for receiving hopper - Google Patents
Granular material level control method for receiving hopperInfo
- Publication number
- JP2000118718A JP2000118718A JP10294176A JP29417698A JP2000118718A JP 2000118718 A JP2000118718 A JP 2000118718A JP 10294176 A JP10294176 A JP 10294176A JP 29417698 A JP29417698 A JP 29417698A JP 2000118718 A JP2000118718 A JP 2000118718A
- Authority
- JP
- Japan
- Prior art keywords
- receiving hopper
- conveyor
- coal
- granular material
- amount
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、貯蔵ホッパから切
り出した粉粒体を、輸送距離の長いコンベヤにより輸送
して受側ホッパに投入した後、該受側ホッパ内の粉粒体
を下流側の設備に供給するコンベヤ長距離輸送時におけ
る受側ホッパのレベル制御方法に関するものである。BACKGROUND OF THE INVENTION The present invention relates to a method and a machine for transporting powdery material cut out from a storage hopper to a receiving hopper after transporting the powdery material by a conveyor having a long transporting distance, and then transferring the powdery material in the receiving hopper to a downstream side. The present invention relates to a method for controlling the level of a receiving hopper during a long-distance transportation of a conveyor supplied to a facility.
【０００２】[0002]
【従来の技術】一般に、貯蔵ホッパから切り出した粉粒
体をコンベヤを用いて輸送して受側ホッパに投入し、こ
の受側ホッパに投入した粉粒体をさらに下流側の設備に
供給する場合、貯蔵ホッパから定量切出装置により一定
量の粉粒体を切り出し、コンベヤにより連続的に輸送す
る。2. Description of the Related Art Generally, when powders and granules cut out from a storage hopper are transported by a conveyor and thrown into a receiving hopper, and the powders and granules thrown into the receiving hopper are further supplied to downstream equipment. Then, a fixed amount of powder and granular material is cut out from the storage hopper by a fixed amount cutting device, and is continuously transported by a conveyor.
【０００３】そして、受側ホッパに投入される粉粒体の
レベル制御は、貯蔵ホッパから切出装置により切り出す
粉粒体量の増減やコンベヤの起動停止等によって行われ
る。受側ホッパのレベルにしたがって貯蔵ホッパからの
切り出し量を増減しても、コンベヤ上には切り出し量変
更前の粉粒体が残っているため、その分だけ受側ホッパ
のレベル制御に時間遅れを生じることになる。このよう
に、コンベヤによる輸送距離が比較的短距離である場
合、コンベヤ上の粉粒体は受側ホッパの容量に比べて非
常に少ないため受側ホッパのレベル制御を行う上で、大
きな外乱となることはない。しかしながら、コンベヤに
よる輸送距離が長距離になる場合、コンベヤ上の粉粒体
量が無視できなくなってくる。[0003] The level control of the granular material fed into the receiving hopper is performed by increasing or decreasing the amount of the granular material cut out from the storage hopper by the cutting device, or by stopping and starting the conveyor. Even if the cutting amount from the storage hopper is increased or decreased according to the level of the receiving hopper, the powder before the change of the cutting amount remains on the conveyor. Will happen. As described above, when the transport distance by the conveyor is relatively short, the amount of powder on the conveyor is very small compared to the capacity of the receiving hopper, so that when controlling the level of the receiving hopper, a large disturbance and It will not be. However, when the transport distance by the conveyor is long, the amount of the granular material on the conveyor cannot be ignored.
【０００４】そこで、受側ホッパが満杯になって粉粒体
が溢れ出すのを予防するには、受側ホッパのレベル設定
値を低めにしておく必要があり、さらに安全をみて設定
値を低くし過ぎると受側ホッパの粉粒体量が少なくなり
すぎる恐れがあり、過不足のないレベル設定を行うのは
簡単ではない。また、受側ホッパの粉粒体量が多くなっ
た段階でコンベヤを停止した場合は、コンベヤ上に残留
する粉粒体のためにコンベヤ再起動時における駆動装置
の負荷が大きくなり、容量の大きな電動機を要すること
になる。Therefore, in order to prevent the receiving hopper from becoming full and overflowing the granular material, it is necessary to lower the level setting value of the receiving hopper. If the amount is too large, the amount of the granular material in the receiving hopper may be too small, and it is not easy to set the level without excess or deficiency. In addition, if the conveyor is stopped at the stage when the amount of the granular material in the receiving hopper becomes large, the load on the driving device at the time of restarting the conveyor becomes large due to the granular material remaining on the conveyor, and the capacity is large. You will need an electric motor.
【０００５】[0005]
【発明が解決しようとする課題】貯蔵ホッパから定量切
出装置により粉粒体を切り出し、コンベヤを用いて受側
ホッパへ輸送する際に、コンベヤによる輸送が長距離に
なると、前記問題点が発生するのが余儀なくされる。本
発明は、前記従来技術の問題点を解消し、コンベヤによ
る輸送が長距離になる場合に、受側ホッパのレベル制御
に対する輸送距離による時間遅れを補償することができ
る受側ホッパのレベル制御方法を提供することを目的と
するものである。The above-mentioned problem occurs when the particles are cut out from the storage hopper by a fixed-quantity cutting device and transported to the receiving hopper using a conveyor if the transportation by the conveyor takes a long distance. Forced to do so. SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems of the prior art, and a receiving hopper level control method capable of compensating for a time delay caused by a transport distance with respect to a receiving hopper level control when transporting by a conveyor takes a long distance. The purpose is to provide.
【０００６】[0006]
【課題を解決するための手段】前記目的を達成するため
の本発明は、粉粒体を貯蔵ホッパから切り出し、輸送距
離の長いコンベヤにより輸送して受側ホッパに投入し、
該受側ホッパ内の粉粒体を下流側の設備に供給するに際
し、前記コンベヤ上に積載されている粉粒体重量と前記
受側ホッパ内に収容された粉粒体重量とを合計した粉粒
体重量を該受側ホッパ内の粉粒体重量とみなして、前記
受側ホッパ内の粉粒体を下流側の設備に供給することを
特徴とする受側ホッパの粉粒体レベル制御方法である。According to the present invention for achieving the above object, the present invention provides a method for cutting powdery and granular materials from a storage hopper, transporting the granular material by a conveyor having a long transport distance, and charging the granular material into a receiving hopper.
When supplying the granular material in the receiving hopper to the downstream equipment, a powder obtained by adding the weight of the granular material loaded on the conveyor and the weight of the granular material stored in the receiving hopper. A method for controlling the level of the granular material in the receiving hopper, wherein the weight of the granular material is regarded as the weight of the granular material in the receiving hopper, and the granular material in the receiving hopper is supplied to downstream equipment. It is.
【０００７】[0007]
【発明の実施の形態】以下、本発明の実施の態様を図面
にしたがって説明する。図１に示すように、塊状の石炭
を収容した貯蔵ホッパ１（石炭貯蔵量は、石炭ヤードか
らのコンベヤ輸送系の制御により独自に調整）から計量
器７を備えたVVVF式の可変速な定量切出装置２によって
一定量の石炭を切り出し、輸送距離の長いコンベヤ３に
より輸送した後、ロードセル６を備えた受側ホッパ４に
投入する。さらに受側ホッパ４から切り出した石炭を、
石炭ミル５に供給して粉砕し、高炉に吹き込む微粉炭を
製造する。ここでの制御対象は定量切出装置２によるコ
ンベヤ３への石炭切り出し量である。Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a VVVF variable-speed quantification equipped with a measuring device 7 from a storage hopper 1 containing a lump of coal (the amount of coal stored is independently adjusted by controlling a conveyor transportation system from a coal yard). A certain amount of coal is cut out by the cutting device 2, transported by the conveyor 3 having a long transport distance, and then put into the receiving hopper 4 provided with the load cell 6. Further, the coal cut out from the receiving hopper 4 is
It is supplied to the coal mill 5 and pulverized, and pulverized coal to be blown into the blast furnace is produced. The control target here is the amount of coal cut out to the conveyor 3 by the fixed amount cut-out device 2.
【０００８】図２に示すように、演算器12で計算した石
炭切り出し量をＰＩＤ制御器13の設定値として、貯蔵ホ
ッパ１の下方に配置された定量切出装置２により石炭を
切り出す。定量切出装置２から輸送距離の長いコンベヤ
３に供給された石炭は、受側ホッパ４に投入される。受
側ホッパ４内の石炭重量がロードセル６によって計測さ
れ、指示計器10に示される石炭計測値（PV1)がＰＩＤ制
御器11に入力される。この値と移動平均器14で計算され
るコンベヤ上の石炭計測値（PV3)の和が、別途オペレー
タによって設定される受側ホッパ４の重量設定値と一致
するようにＰＩＤ制御器11でＰＩＤ演算を行い、その出
力は補正値（BS）として演算器12に入力される。As shown in FIG. 2, the amount of coal cut out calculated by the calculator 12 is set as a set value of the PID controller 13 and the coal is cut out by the fixed amount cut-out device 2 disposed below the storage hopper 1. The coal supplied from the fixed quantity extracting device 2 to the conveyor 3 having a long transport distance is charged into the receiving hopper 4. The weight of the coal in the receiving hopper 4 is measured by the load cell 6, and the coal measurement value (PV 1 ) indicated on the indicating instrument 10 is input to the PID controller 11. The PID controller 11 controls the PID controller 11 so that the sum of this value and the measured value of the coal (PV 3 ) on the conveyor calculated by the moving averager 14 matches the weight set value of the receiving hopper 4 set by an operator separately. The calculation is performed, and the output is input to the calculator 12 as a correction value (BS).
【０００９】貯蔵ホッパ１から定量切出装置２により切
り出される石炭量は、受側ホッパ４から石炭ミル５への
給炭量計測値（PV2)と、前述の補正値（BS）から演算器
12により演算され、出力設定値（MV）が設定される。こ
の出力設定値（MV）がＰＩＤ制御器13に入力され、これ
により定量切出装置２が制御され出力設定値（MV）に相
当する石炭が切り出される。The amount of coal cut out from the storage hopper 1 by the fixed amount cut-out device 2 is calculated from a measured value (PV 2 ) of the amount of coal fed from the receiving hopper 4 to the coal mill 5 and the above-mentioned correction value (BS).
The output setting value (MV) is set by the calculation in (12). The output set value (MV) is input to the PID controller 13, whereby the fixed quantity cutout device 2 is controlled, and coal corresponding to the output set value (MV) is cut out.
【００１０】この出力設定値（MV）は、〔給炭量計測値
（PV2 ）×重み設定値（SV）〕、補正値（BS）およびし
きい値（CS）を用いて、次の式(1) により求めことがで
きる。 MV＝（PV2 ×SV）＋BS＋CS────(1) そして、式(1) における重み設定値（SV）の意味は、受
側ホッパ４から石炭ミル５への給炭量に対してどれくら
いの割合で貯蔵ホッパ１からの石炭切り出し量を設定し
て出力設定値（MV）を出力させるかである。例えば、重
み設定値（SV）＝1.0 の場合は、貯蔵ホッパ１から石炭
を切り出すための出力設定値（MV）は、給炭量に対して
１：１の割合となる。そして石炭計測値（PV1 ）の補正
値（BS）は、受側ホッパ４の重量の増減を定量切出装置
２の制御に反映させるために設けたものである。補正値
（BS）は０〜１の範囲で変化し、ロードセル６の指示値
が一定値を保っていれば0.5 であり、減少傾向であれば
値は大きく、増加傾向であれば値は小さくなる。また、
しきい値（CS）はロードセル６の指示値が変動しない場
合は出力設定値（MV）が給炭計測値（PV2)の変化のみで
決定されるためのしきい値である。The output set value (MV) is calculated by the following equation using [coal feed amount measurement value (PV 2 ) × weight set value (SV)], correction value (BS) and threshold value (CS). It can be obtained by (1). MV = (PV 2 × SV) + BS + CS──── (1) And the meaning of the weight set value (SV) in the equation (1) is how much with respect to the amount of coal supplied from the receiving hopper 4 to the coal mill 5. , The amount of coal cut out from the storage hopper 1 is set and the output set value (MV) is output. For example, when the weight set value (SV) = 1.0, the output set value (MV) for cutting out coal from the storage hopper 1 has a ratio of 1: 1 to the coal supply amount. The correction value (BS) of the coal measurement value (PV 1 ) is provided to reflect the increase or decrease in the weight of the receiving hopper 4 in the control of the fixed quantity cutting device 2. The correction value (BS) changes in the range of 0 to 1, and is 0.5 when the indicated value of the load cell 6 keeps a constant value. The value is large when the value is decreasing, and is small when the value is increasing. . Also,
The threshold value (CS) is a threshold value so that the output set value (MV) is determined only by a change in the coal supply measurement value (PV 2 ) when the indicated value of the load cell 6 does not change.
【００１１】すなわち、受側ホッパ４内の石炭計測値
（PV1)と石炭ミル５への給炭量計測値（PV2)とから石炭
切り出しの出力設定値（MV）を定めるが、このときの切
り出し量制御における重み付けは、演算器12の重み設定
値（SV）と、補正値（BS）と、しきい値（CS）とで決定
される。ここで、貯蔵ホッパ１からの石炭切り出し量制
御は、主として受側ホッパ４から石炭ミル５への給炭量
にしたがうことを基本として行われる。受側ホッパ４の
レベル制御は、石炭ミル5 の安定稼働のため給炭量は一
定値を確保したいこと、給炭量変動時のバッファとする
ため大幅な変動は避けたいといった理由により、貯蔵ホ
ッパ１から石炭ミル５への石炭切り出し量制御の補正の
役目を持っており、ＰＩＤ制御器11には初期補正出力設
定値＝0.5 が設定される。貯蔵ホッパ１→定量切出装置
２→受側ホッパ４→石炭ミル５のルートで石炭が輸送さ
れる場合において、受側ホッパ４が備えたロードセル６
によって計測される受側ホッパ４内の石炭重量、すなわ
ちレベルに変動がないときには、ＰＩＤ制御器11から演
算器12に指示される石炭計測値（PV1)の補正値（BS）は
初期補正出力設定値＝0.5 のままであり、演算器12に設
定してあるしきい値（CS）＝−0.5 により打ち消され、
(BS)＋（CS）＝０となり、重み設定値（SV）＝1.0 とし
た場合には式(1) により出力設定値（MV）＝（PV2)とな
る。この出力設定値（MV）＝（PV2)が、演算器12からＰ
ＩＤ制御器13に指示され、さらにＰＩＤ制御器13から出
力設定値（MV）＝（PV2)が定量切出装置２に指令され、
貯蔵ホッパ１からコンベヤ３への石炭切り出し量が制御
される。これにより受側ホッパ４の石炭レベルが低下す
れば貯蔵ホッパ１から切り出す石炭量を増加させ、石炭
レベルが上昇すれば切り出す石炭量を減少させる。That is, an output set value (MV) for coal cutting is determined from the measured coal value (PV 1 ) in the receiving hopper 4 and the measured coal feed amount (PV 2 ) to the coal mill 5. Is weighted by the weight setting value (SV) of the computing unit 12, the correction value (BS), and the threshold value (CS). Here, the control of the amount of coal cutout from the storage hopper 1 is mainly performed based on the amount of coal supplied from the receiving hopper 4 to the coal mill 5. The level control of the receiving hopper 4 is performed in order to keep the coal feed rate constant for stable operation of the coal mill 5 and to avoid large fluctuations as a buffer when the coal feed rate fluctuates. It has the role of correcting the amount of coal cutout from 1 to the coal mill 5, and the PID controller 11 is set to an initial correction output set value = 0.5. When coal is transported along the route of the storage hopper 1 → the fixed quantity extracting device 2 → the receiving hopper 4 → the coal mill 5, the load cell 6 provided in the receiving hopper 4
When there is no change in the weight of coal in the receiving hopper 4, that is, the level measured by the PID controller 11, the correction value (BS) of the coal measurement value (PV 1 ) instructed from the PID controller 11 to the calculator 12 is an initial correction output. The set value remains at 0.5, and is canceled by the threshold (CS) = − 0.5 set in the arithmetic unit 12,
When (BS) + (CS) = 0 and the weight set value (SV) = 1.0, the output set value (MV) = (PV 2 ) is obtained by equation (1). This output set value (MV) = (PV 2 )
An instruction is given to the ID controller 13, and further, an output set value (MV) = (PV 2 ) is instructed from the PID controller 13 to the fixed quantity extracting device 2,
The amount of coal cut from the storage hopper 1 to the conveyor 3 is controlled. Thus, if the coal level of the receiving hopper 4 decreases, the amount of coal cut out from the storage hopper 1 is increased, and if the coal level increases, the amount of coal cut out decreases.
【００１２】ところで、コンベヤ３の輸送距離が短距離
である場合には、受側ホッパ４のレベル制御上で問題に
はならないが、長距離に及ぶ場合には時間遅れ要因とし
てコンベヤ３上の石炭量が受側ホッパ４のレベル制御に
影響を与える。そこで、本発明では、前記のような石炭
の輸送工程において、定量切出装置２からコンベヤ３上
に切り出される石炭を計量器７を用いて計量し、これを
移動平均器14に入力する。移動平均器14では、計量器７
の指示値をある程度の間隔t である指定の数mだけサン
プリングを行い、そのサンプルデータをm とt で除する
ことで時間平均値を計算する。この時間平均値に、コン
ベヤ３の速度で決まる貯蔵ホッパ１から受側ホッパ４へ
の搬送時間を乗じることでコンベヤ３上の石炭計測値
(PV3)を計算し、これをＰＩＤ制御器11に入力する。When the transport distance of the conveyor 3 is short, there is no problem in controlling the level of the receiving hopper 4, but when the transport distance is long, the coal on the conveyor 3 is regarded as a time delay factor. The amount affects the level control of the receiving hopper 4. Therefore, in the present invention, in the above-described coal transporting step, the coal cut out from the fixed amount cut-out device 2 onto the conveyor 3 is weighed using the measuring device 7 and input to the moving averager 14. In the moving averager 14, the measuring device 7
Is sampled for a specified number m, which is a certain interval t, and the sample data is divided by m and t to calculate a time average value. By multiplying this time average value by the transport time from the storage hopper 1 to the receiving hopper 4 determined by the speed of the conveyor 3, the measured coal value on the conveyor 3
(PV 3 ) is calculated and input to the PID controller 11.
【００１３】ＰＩＤ制御器11では、コンベヤ上の石炭計
測値 (PV3)とロードセル６で計測した受側ホッパ４の石
炭計測値(PV1) とを加算し、この加算値〔コンベヤ上の
石炭計測値 (PV3)＋受側ホッパの石炭計測値(PV1) ＝Ｐ
Ｖ〕を受側ホッパ４の石炭計測値ＰＶとみなし、この石
炭計測値ＰＶと、オペレータが別途設定する受側ホッパ
重量設定値からＰＩＤ演算により補正値(BS)を求める。
そして、ＰＩＤ制御器11から補正値(BS)を演算器12に入
力し、式(1) に基づいて出力設定値(MV)を演算し、これ
により長距離コンベヤ３に起因する時間遅れを受けない
制御系を実現するものである。The PID controller 11 adds the measured coal value (PV 3 ) on the conveyor and the measured coal value (PV 1 ) of the receiving hopper 4 measured by the load cell 6 and calculates the sum [coal on the conveyor]. Measured value (PV 3 ) + Coal measured value of receiving hopper (PV 1 ) = P
V] is regarded as the coal measured value PV of the receiving hopper 4, and a correction value (BS) is obtained by PID calculation from the coal measured value PV and the receiving hopper weight set value separately set by the operator.
Then, the correction value (BS) is input from the PID controller 11 to the calculator 12, and the output set value (MV) is calculated based on the equation (1), thereby receiving the time delay caused by the long distance conveyor 3. There is no control system.
【００１４】図３は〔コンベヤ上の石炭計測値 (PV3)＋
石炭計測値(PV1) ＝ＰＶ〕を受側ホッパ４のレベルとみ
なす本発明を実施した場合の受側ホッパ４のレベル８お
よび受側ホッパ４から石炭ミル５への給炭量９の時間推
移を示したものである。図３に示すように、貯蔵ホッパ
１から切り出した石炭を長距離コンベヤ３を用いて受側
ホッパ４に投入する場合において、受側ホッパ４から石
炭ミルへの給炭量９が減少しているにもかかわらず受側
ホッパレベル８が一定に保たれていることが分かる。こ
の場合の受側ホッパレベル８はコンベヤ３上の石炭量と
受側ホッパ４内の石炭量との和であるのはいうまでもな
い。FIG. 3 shows [Measured value of coal on conveyor (PV 3 ) +
Coal measurement value (PV 1 ) = PV] is regarded as the level of the receiving hopper 4. In the case where the present invention is carried out, the time of the level 8 of the receiving hopper 4 and the amount of coal 9 supplied from the receiving hopper 4 to the coal mill 5. It shows the transition. As shown in FIG. 3, when the coal cut from the storage hopper 1 is put into the receiving hopper 4 using the long-distance conveyor 3, the amount 9 of coal supplied from the receiving hopper 4 to the coal mill is reduced. Nevertheless, it can be seen that the receiving hopper level 8 is kept constant. Needless to say, the receiving hopper level 8 in this case is the sum of the amount of coal on the conveyor 3 and the amount of coal in the receiving hopper 4.
【００１５】前記本発明の実施の態様では、貯蔵ホッパ
から切り出した石炭をコンベヤにより輸送して受側ホッ
パに投入し、さらに受側ホッパ内の石炭を石炭ミルによ
り粉砕する場合について説明したが、これに限定するも
のではなく、各種の粉粒体を処理するのに広く適用する
ことができる。また、前記コンベヤは、ベルトコンベ
ヤ、パンコンベヤ、バケットコンベヤ等のコンベヤ一般
を代表しており、コンベヤの種類は問わない。なお、受
側ホッパの上流側に輸送距離の長いコンベヤを１台設置
する例で説明したが、輸送距離の短いコンベヤを複数台
連結し、結果的にコンベヤの輸送距離が長くなる場合に
も適用できるのはいうまでもない。In the embodiment of the present invention, a case has been described in which coal cut from the storage hopper is transported by a conveyor, thrown into the receiving hopper, and the coal in the receiving hopper is pulverized by a coal mill. The present invention is not limited to this, and can be widely applied to processing various kinds of powders. Further, the conveyor represents a general conveyor such as a belt conveyor, a bread conveyor, and a bucket conveyor, and the type of the conveyor is not limited. In addition, although the example in which one conveyor with a long transport distance is installed upstream of the receiving hopper has been described, the present invention is also applicable to a case where a plurality of conveyors with a short transport distance are connected, resulting in a long transport distance of the conveyor. It goes without saying that you can do it.
【００１６】[0016]
【発明の効果】以上説明したように、本発明によれば、
輸送距離の長いコンベヤ上の粉粒体量と、受側ホッパ内
の粉粒体量との和を、受側ホッパ内の粉粒体量とみなし
て、コンベヤへの切り出し量を制御することで、輸送距
離の長いコンベヤと受側ホッパとを含めた系により粉粒
体の重量を一定に保つことが可能になる。これにより、
受側ホッパ単独のレベル変動を最小限に抑制でき、受側
ホッパから下流側設備へ粉粒体を安定した状態で供給す
ることができるので、下流側設備の操業安定化が達成さ
れる。また、受側ホッパの粉粒体レベル変動によるコン
ベヤの停止、再起動の動作が低減され、コンベヤ駆動装
置にかかる機械的な負荷が軽減できる効果も得られる。As described above, according to the present invention,
The sum of the amount of the granular material on the conveyor with the long transport distance and the amount of the granular material in the receiving hopper is regarded as the amount of the granular material in the receiving hopper, and the amount cut out to the conveyor is controlled. In addition, a system including a conveyor having a long transport distance and a receiving hopper makes it possible to keep the weight of the granular material constant. This allows
Since the level fluctuation of the receiving hopper alone can be suppressed to a minimum, and the granular material can be supplied from the receiving hopper to the downstream equipment in a stable state, the operation stabilization of the downstream equipment is achieved. Further, the operation of stopping and restarting the conveyor due to fluctuations in the granular material level of the receiving hopper is reduced, and the effect of reducing the mechanical load on the conveyor driving device can be obtained.
【図１】本発明の貯蔵ホッパから石炭ミルまでの石炭輸
送系統を示す説明図である。FIG. 1 is an explanatory diagram showing a coal transportation system from a storage hopper to a coal mill according to the present invention.
【図２】本発明の貯蔵ホッパから石炭ミルまでの制御系
統図である。FIG. 2 is a control system diagram from a storage hopper to a coal mill according to the present invention.
【図３】本発明の受側ホッパの石炭レベルおよび受側ホ
ッパから石炭ミルへの給炭量の時間推移を示すグラフで
ある。FIG. 3 is a graph showing the transition of the coal level of the receiving hopper and the amount of coal supplied from the receiving hopper to the coal mill with time according to the present invention.
１ 貯蔵ホッパ ２ 定量切出装置 ３ コンベヤ ４ 受側ホッパ ５ 石炭ミル ６ ロードセル ７ 計量器 ８ 受側ホッパレベル ９ 給炭量 10 指示計器 11、13 ＰＩＤ制御器 12 演算器 14 移動平均器 DESCRIPTION OF SYMBOLS 1 Storage hopper 2 Quantitative cutting-out apparatus 3 Conveyor 4 Receiving hopper 5 Coal mill 6 Load cell 7 Weighing instrument 8 Receiving hopper level 9 Coal supply 10 Indicating instrument 11, 13 PID controller 12 Computing unit 14 Moving averager
フロントページの続き (72)発明者 井野 勝己 岡山県倉敷市水島川崎通１丁目（番地な し） 川崎製鉄株式会社水島製鉄所内 (72)発明者 河野 洋 岡山県倉敷市水島川崎通１丁目（番地な し） 川鉄電設株式会社水島事業部内 (72)発明者 山下 健二 岡山県倉敷市水島川崎通１丁目（番地な し） 川鉄電設株式会社水島事業部内 Ｆターム(参考） 3F075 AA08 BA01 BB01 CA01 CA02 CA06 CA09 CB01 CB04 CB06 CB11 CB12 CB14 CB15 CB16 CC01 Continued on the front page (72) Inventor Katsumi Ino 1-chome, Mizushima-Kawasaki-dori, Kurashiki-shi, Okayama Pref. None) Within the Mizushima Business Department of Kawatetsu Dentsu Co., Ltd. (72) Inventor Kenji Yamashita 1-chome, Mizushima Kawasaki-dori, Kurashiki-shi, Okayama Prefecture CA09 CB01 CB04 CB06 CB11 CB12 CB14 CB15 CB16 CC01
Claims (1)
距離の長いコンベヤにより輸送して受側ホッパに投入
し、該受側ホッパ内の粉粒体を下流側の設備に供給する
に際し、前記コンベヤ上に積載されている粉粒体重量と
前記受側ホッパ内に収容された粉粒体重量とを合計した
粉粒体重量を該受側ホッパ内の粉粒体重量とみなして、
前記受側ホッパ内の粉粒体を下流側の設備に供給するこ
とを特徴とする受側ホッパの粉粒体レベル制御方法。1. A method according to claim 1, wherein the granular material is cut out from a storage hopper, transported by a conveyor having a long transport distance, thrown into a receiving hopper, and supplied with the granular material in the receiving hopper to downstream equipment. Assuming that the weight of the powder and granules loaded on the conveyor and the weight of the powder and granules contained in the receiving hopper is the weight of the powder and granules in the receiving hopper,
A method for controlling the level of the granular material in the receiving hopper, comprising supplying the granular material in the receiving hopper to downstream equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10294176A JP2000118718A (en) | 1998-10-15 | 1998-10-15 | Granular material level control method for receiving hopper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10294176A JP2000118718A (en) | 1998-10-15 | 1998-10-15 | Granular material level control method for receiving hopper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000118718A true JP2000118718A (en) | 2000-04-25 |
Family
ID=17804305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10294176A Pending JP2000118718A (en) | 1998-10-15 | 1998-10-15 | Granular material level control method for receiving hopper |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000118718A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007204179A (en) * | 2006-01-31 | 2007-08-16 | Jfe Steel Kk | Powder level control method and device |
| CN107307115A (en) * | 2017-08-16 | 2017-11-03 | 池州芦山生态农庄科技开发有限公司 | A kind of Full automatic tea processing leaf dispensing machines |
| CN114345532A (en) * | 2022-01-06 | 2022-04-15 | 宝武集团鄂城钢铁有限公司 | Coal preparation system and process |
-
1998
- 1998-10-15 JP JP10294176A patent/JP2000118718A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007204179A (en) * | 2006-01-31 | 2007-08-16 | Jfe Steel Kk | Powder level control method and device |
| CN107307115A (en) * | 2017-08-16 | 2017-11-03 | 池州芦山生态农庄科技开发有限公司 | A kind of Full automatic tea processing leaf dispensing machines |
| CN114345532A (en) * | 2022-01-06 | 2022-04-15 | 宝武集团鄂城钢铁有限公司 | Coal preparation system and process |
| CN114345532B (en) * | 2022-01-06 | 2023-06-16 | 宝武集团鄂城钢铁有限公司 | Coal making system and process |
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