JPH11333319A - Apparatus for automatic estimation of coal pulverizability - Google Patents
Apparatus for automatic estimation of coal pulverizabilityInfo
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- JPH11333319A JPH11333319A JP36219898A JP36219898A JPH11333319A JP H11333319 A JPH11333319 A JP H11333319A JP 36219898 A JP36219898 A JP 36219898A JP 36219898 A JP36219898 A JP 36219898A JP H11333319 A JPH11333319 A JP H11333319A
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- coal
- mill
- deviation
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- multiplying
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Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、石炭粉砕機におけ
る石炭粉砕性自動推定装置に係り、特に性状の異なる複
数種の石炭を燃料として使用する石炭焚きボイラに付設
される石炭粉砕装置における石炭性状の自動推定装置に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for automatically estimating the pulverizability of coal in a coal pulverizer. Automatic estimating apparatus.
【0002】[0002]
【従来の技術】石炭粉砕機において、石炭化度の低い石
炭は粉砕しやすいが、微粉砕しにくい。石炭化が進むと
次第に粉砕し易くなり、さらに進むとまた粉砕しにくく
なる。一般に水分、灰分が多いものは粉砕しにくい。か
かる、石炭性状の固さを表す指標である石炭の粉砕性の
試験方法はボールミル法とハードグローブ法があるが、
ボイラ運転中にオンラインで計測することが困難であ
り、僅かに図7に示す装置が存在するのみである。2. Description of the Related Art In a coal pulverizer, coal having a low degree of coalification is easily pulverized, but is not easily pulverized. As coalification proceeds, it becomes easier to grind, and as it proceeds further, it becomes more difficult to grind again. In general, those having a large amount of water and ash are hard to be crushed. Such a method for testing the pulverizability of coal, which is an index representing the hardness of coal properties, includes a ball mill method and a hard glove method.
It is difficult to measure online during boiler operation, and only the device shown in FIG. 7 exists.
【0003】図7は、操作量調節器102よりの最適操
作量u及び石炭粉砕性推定器105よりのパラメータθ
を入力信号として、ミル動特性モデル103で得られた
バーナ入口微粉炭流量推定値χを減算器101に入力し
て目標値との偏差を求め、該偏差を操作量調節器102
に投入して最適操作量uを求め、該最適操作量uに基づ
いて給炭量、分級器回転数、加圧力の制御を行なう。FIG. 7 shows an optimum operation amount u from the operation amount controller 102 and a parameter θ from the coal grindability estimator 105.
, The burner inlet pulverized coal flow rate estimated value χ obtained by the mill dynamic characteristic model 103 is input to a subtractor 101 to obtain a deviation from a target value.
To determine the optimal operation amount u, and based on the optimal operation amount u, control the coal supply amount, the classifier rotation speed, and the pressing force.
【0004】又ミル動特性モデル103よりの出力値と
して微粉炭流量推定値χとともに、ミル差圧予測値y’
を得、該ミル差圧予測値y’を減算器104でミルテー
ブル差圧計測値yとの偏差信号を石炭粉砕性推定器10
5に投入してパラメータθを求めている。[0004] A mill differential pressure prediction value y 'together with a pulverized coal flow rate estimation value よ り as an output value from the mill dynamic characteristic model 103.
And a difference signal between the mill differential pressure prediction value y ′ and the mill table differential pressure measurement value y is calculated by the subtractor 104 using the coal pulverizability estimator 10.
5 to determine the parameter θ.
【0005】[0005]
【発明が解決しようとする課題】しかしながら、かかる
従来技術においても、ミル動特性モデルが性状の異なる
石炭を変動が大きいミルの差圧を用いて精度良く推定す
るには、かなりの労力を必要とする。この為多炭種石炭
焚きボイラにおいては、複数台の石炭粉砕装置から微粉
砕された石炭(微粉炭)が燃料としてバーナへ供給され
る訳であるが、従来の制御装置にあっては、石炭粉砕性
(HGI)によるミル実容量の変化が把握できないた
め、石炭粉砕装置の台数制御は、かなり余裕を見た台数
切替えが必要であった。However, even in such a conventional technique, a considerable amount of labor is required for the mill dynamic characteristic model to accurately estimate coal having different properties using the differential pressure of the mill having large fluctuations. I do. For this reason, in a coal-rich coal-fired boiler, finely pulverized coal (pulverized coal) is supplied to the burner as fuel from a plurality of coal pulverizers. Since the change in the actual mill capacity due to the pulverizability (HGI) cannot be grasped, the control of the number of coal pulverizers requires a considerable margin of switching.
【0006】従って多炭種石炭焚きボイラにおいても、
石炭の性状、特に石炭の粉砕性がオンラインで計測でき
れば大幅な制御性の向上が期待できる。より具体的に
は、石炭の粉砕性がオンラインで推定できれば、以下の
利点が生じる。 1)石炭粉砕装置の最大容量の把握が容易となり、的確
な石炭粉砕装置の台数制御が可能である。 2)石炭粉砕装置からバーナに供給される微粉炭量の予
測も適当なモデルを用いることで可能となる。 3)上記利点を制御装置で活用すれば制御性及び信頼性
の向上が期待できる。[0006] Accordingly, even in a coal-fired coal-fired boiler,
If the properties of coal, especially the pulverizability of coal, can be measured online, significant controllability can be expected. More specifically, if the pulverizability of coal can be estimated online, the following advantages are obtained. 1) The maximum capacity of the coal crusher can be easily grasped, and the number of coal crushers can be accurately controlled. 2) The amount of pulverized coal supplied from the coal crusher to the burner can be predicted by using an appropriate model. 3) If the above advantages are utilized in the control device, controllability and reliability can be improved.
【0007】本発明はかかる要請に鑑み、例えば性状の
異なる複数種の石炭を燃料として使用する石炭焚きボイ
ラに付設される石炭粉砕装置であっても石炭の粉砕性が
オンラインで容易に推定できる石炭粉砕性自動推定装置
を提供することを目的とする。In view of the above demand, the present invention provides a coal pulverizing apparatus attached to a coal-fired boiler that uses a plurality of types of coal having different properties as a fuel. It is an object of the present invention to provide a crushability automatic estimation device.
【0008】[0008]
【課題を解決するための手段】本出願人は、当初石炭の
粉砕性(HGI)は、ミルモータの電流と回転分級器
(MRS)回転数及び給炭量に相関があることに着目し
たが、石炭の粉砕性(HGI)はこの他にミル加圧装置
の油圧とロールリフトとの相関もかなり大きいことも見
出した。本発明は、かかる知見に基づいて、給炭量
ミルモータの電流回転分級器(MRS)回転数ミル
加圧装置の油圧ロールリフトの各プロセスデータを選
択的に種々組み合わせて石炭の粉砕性を推定することを
要旨とするものである。Means for Solving the Problems The applicant of the present invention initially focused on the fact that the grindability (HGI) of coal is correlated with the current of the mill motor, the number of revolutions of a rotary classifier (MRS), and the amount of coal supplied. In addition, it was also found that the correlation between the hydraulic pressure of the mill press and the roll lift was considerably large in the grindability (HGI) of coal. The present invention estimates the pulverizability of coal by selectively and variously combining various process data of a hydraulic roll lift of a current rotation classifier (MRS) rotational speed mill pressurizing device of a coal feed mill motor based on such knowledge. The gist is that.
【0009】即ち、請求項1記載の発明は、性状の異な
る複数種の石炭の粉砕装置において、前記粉砕装置より
得られる、給炭量、ミルモータの電流、回転分級器(M
RS)の回転数、ミル加圧装置の油圧、及びロールリフ
トの各プロセスデータの内より選択した2以上のプロセ
スデータと予め設定した定数とを組み合わせて複数段の
演算を行ない、該演算手段の出力信号に応答遅れを加味
して得られた一次遅れ要素の出力を石炭粉砕性推定値と
したことを特徴とする。That is, according to the present invention, in a plurality of types of coal pulverizers having different properties, a coal feed amount, a mill motor current, and a rotary classifier (M) obtained from the pulverizer are provided.
RS), two or more process data selected from among the process data of each of the rotational speed, the hydraulic pressure of the mill pressurizing device, and the roll lift, and a preset constant are combined to perform a multi-stage operation. The output of the first-order lag element obtained by adding the response delay to the output signal is used as an estimated value of coal pulverizability.
【0010】請求項2記載の発明は、後記第1〜第3実
施形態に対応するもので、性状の異なる複数種の石炭の
粉砕装置において、前記粉砕装置より得られる、給炭
量、ミルモータの電流、回転分級器(MRS)の回転
数、ミル加圧装置の油圧、及びロールリフトの各プロセ
スデータの内より選択した一又は複数のプロセスデータ
を直接若しくは所定の演算処理により得られたデータ
と、該夫々のデータとミル給炭量を入力とする関数発生
器から出力される基準値との偏差を求める減算手段と、
前記偏差に係数を含む定数を乗じる乗算手段と、前記乗
算手段の出力信号と定数を加算する加算手段と、前記2
次演算手段の出力信号に応答遅れを加味する一次遅れ要
素とを具備し、前記一次遅れ要素の出力を石炭粉砕性推
定値としたことを特徴とする。The invention according to claim 2 corresponds to the first to third embodiments to be described later. In a plurality of types of coal pulverizers having different properties, the amount of coal supplied and the mill motor obtained by the pulverizer are obtained. One or a plurality of process data selected from among the process data of the current, the number of revolutions of the rotation classifier (MRS), the oil pressure of the mill pressurizing device, and the roll lift are combined with data obtained by direct or predetermined arithmetic processing. Subtraction means for calculating a deviation between the respective data and a reference value output from a function generator having a mill coal feed rate as an input;
Multiplying means for multiplying the deviation by a constant including a coefficient, adding means for adding a constant to an output signal of the multiplying means,
A primary delay element that adds a response delay to an output signal of the next operation means, and an output of the primary delay element is used as an estimated value of coal pulverizability.
【0011】かかる発明は、例えば性状の異なる複数種
の石炭を燃料として使用する石炭焚きボイラに付設され
る石炭粉砕装置において、図1に例示している技術のよ
うに請求項3記載の発明として特定される。即ち、請求
項3記載の発明は、石炭の粉砕性(HGI)が、ミルモ
ータの電流と回転分級器(MRS)回転数及び給炭量に
相関があることに着目したもので、前記石炭の粉砕装置
のミルモータ電流21と回転分級器の回転数22との比
を求める除算手段66と、該除算手段で求めた比と、ミ
ル給炭量03を入力とする関数発生器67から出力され
る基準値との偏差を求める減算手段68と、該偏差を2
乗して、さらに係数を乗じたものを偏差に係数を乗じた
ものと定数を加算する、乗算器と加算器からなる2次演
算手段69〜74と、前記2次演算手段69〜74の出
力信号に応答遅れを加味する一次遅れ要素77とを具備
し、前記一次遅れ要素77の出力を石炭粉砕性推定値と
したことを特徴とする。This invention relates to a coal pulverizing apparatus attached to a coal-fired boiler using a plurality of types of coal having different properties as fuel, for example, as shown in FIG. Specified. That is, the invention according to claim 3 is based on the fact that the coal crushability (HGI) is correlated with the current of the mill motor, the number of revolutions of the rotary classifier (MRS), and the amount of coal supplied. A dividing means 66 for obtaining a ratio between the mill motor current 21 of the apparatus and the number of revolutions 22 of the rotary classifier, a reference obtained from a function generator 67 having the ratio obtained by the dividing means and the mill coal feed 03 as input. Subtraction means 68 for determining a deviation from the value;
Multiplied by a coefficient, further multiplied by a coefficient, multiplied by a coefficient and added by a constant, and a secondary operation means 69-74 comprising a multiplier and an adder; and outputs of the secondary operation means 69-74. A first-order lag element 77 for adding a response delay to the signal, and an output of the first-order lag element 77 is used as an estimated value of the coal pulverizability.
【0012】請求項4記載の記載の発明は、石炭の粉砕
性(HGI)が、ミル加圧装置の油圧01とロールリフ
ト02との相関があることに着目したもので、例えば性
状の異なる複数種の石炭を燃料として使用する石炭焚き
ボイラに付設される石炭粉砕装置において、図2に例示
されているように、石炭粉砕装置のミル加圧装置油圧0
1とロールリフト02を乗算する乗算手段04と、該乗
算手段04で求めた値と、ミル給炭量03を入力とする
関数発生器05から出力される基準値との偏差を求める
減算手段06と、その偏差を2乗してさらに係数を乗じ
たものと、偏差に係数を乗じたものと、定数とを加算す
る、乗算器と加算器からなる2次演算手段07〜14
と、前記2次演算手段07〜14の出力信号に応答遅れ
を加味する一次遅れ要素15を具備し、前記一次遅れ要
素15の出力を石炭粉砕性推定値としたことを特徴とす
る。The invention described in claim 4 is based on the fact that the pulverizability (HGI) of coal has a correlation between the hydraulic pressure 01 of the mill pressurizing device and the roll lift 02. In a coal crusher attached to a coal-fired boiler using coal of a certain type as a fuel, as shown in FIG.
Multiplying means 04 for multiplying 1 by the roll lift 02; subtracting means 06 for calculating the deviation between the value obtained by the multiplying means 04 and the reference value output from the function generator 05 which receives the mill coal supply 03 as input. And quadratic arithmetic means 07-14 for adding a constant obtained by squaring the deviation and further multiplying the coefficient, a coefficient obtained by multiplying the deviation by a coefficient, and a constant.
And a first-order lag element 15 for adding a response delay to the output signals of the second-order calculation means 07 to 14, and the output of the first-order lag element 15 is used as an estimated value of coal pulverizability.
【0013】請求項5記載の発明は、請求項2記載の石
炭粉砕性自動推定装置において、前記粉砕装置のミル加
圧装置油圧、ロールリフト、ミルモータ電流、及び回転
分級器回転数の内より選択された二つ以上のプロセスデ
ータと、該プロセスデータ夫々とミル給炭量を入力とす
る関数発生器から出力される基準値との偏差を求める複
数の減算手段と、前記複数の減算手段夫々の偏差と定数
を乗算する、前記減算手段に対応する数の乗算手段と、
前記複数の乗算手段夫々の信号を加算する加算手段と、
その加算手段の出力信号に応答遅れを加味する一次遅れ
要素を具備し、前記一次遅れ要素の出力を石炭粉砕性推
定値としたことを特徴とするものである。According to a fifth aspect of the present invention, in the apparatus for automatically estimating the pulverizability of coal according to the second aspect, the mill is selected from among a hydraulic pressure of a mill pressing device, a roll lift, a mill motor current, and a rotational speed of a rotary classifier. A plurality of subtraction means for obtaining a deviation between the obtained two or more process data, a reference value output from a function generator having the process data and a mill coal supply as inputs, and a plurality of subtraction means, respectively. Multiplying the deviation by a constant, multiplying means of a number corresponding to the subtracting means,
Adding means for adding signals of the plurality of multiplying means,
A primary delay element is added to the output signal of the adding means in consideration of a response delay, and the output of the primary delay element is used as an estimated value of coal pulverizability.
【0014】即ち、本発明は、図3に例示されているよ
うに、石炭粉砕装置のミル加圧装置油圧01と、ミル給
炭量03を入力とする関数発生器23から出力される基
準値との偏差を求める減算手段24と、その偏差と定数
を乗算する乗算手段32と、ロールリフト02とミル給
炭量03を入力とする関数発生器25から出力される基
準値との偏差を求める減算手段26と、その偏差と定数
を乗算する乗算手段34と、ミルモータ電流21とミル
給炭量03を入力とする関数発生器27から出力される
基準値との偏差を求める減算手段28と、その偏差と定
数を乗算する乗算手段36と、回転分級器回転数22と
ミル給炭量03を入力とする関数発生器29から出力さ
れる基準値との偏差を求める減算手段30と、その偏差
と定数を乗算する乗算手段38と、乗算手段32と34
と36と38を加算する加算手段39と、その加算手段
39の出力信号に応答遅れを加味する一次遅れ要素40
とを具備する構成とする事により、前記一次遅れ要素の
出力を石炭粉砕性推定値として利用できる。That is, according to the present invention, as illustrated in FIG. 3, a reference value output from a function generator 23 having a mill pressurizing device oil pressure 01 of a coal pulverizer and a mill feed amount 03 as inputs. 24, a multiplying means 32 for multiplying the deviation by a constant, and a deviation from a reference value output from a function generator 25 having a roll lift 02 and a mill coal feed 03 as inputs. A subtraction means 26, a multiplication means 34 for multiplying the deviation by a constant, a subtraction means 28 for obtaining a deviation from a reference value output from a function generator 27 having the mill motor current 21 and the mill coal supply 03 as inputs, A multiplication means 36 for multiplying the deviation by a constant; a subtraction means 30 for obtaining a deviation between a rotation classifier rotation speed 22 and a reference value output from a function generator 29 having the mill coal supply 03 as an input; Multiplies by a constant And calculation means 38, multiplying means 32 and 34
Adding means 39 for adding,, and 36, and a first-order lag element 40 for adding a response delay to an output signal of the adding means 39.
With this configuration, the output of the first-order lag element can be used as an estimated value of coal pulverizability.
【0015】請求項6記載の発明は、請求項1記載の石
炭粉砕性自動推定装置において、演算手段の簡素化を図
ったもので、前記粉砕装置のミル加圧装置油圧、ロール
リフト、ミルモータ電流、回転分級器回転数、及びミル
給炭量夫々のプロセスデータに定数を乗算する複数の乗
算手段と、前記複数の乗算手段夫々の信号を加算する加
算手段と、その加算手段の出力信号に応答遅れを加味す
る一次遅れ要素を具備し、前記一次遅れ要素の出力を石
炭粉砕性推定値としたことを特徴とする。According to a sixth aspect of the present invention, in the automatic coal crushability estimating apparatus of the first aspect, the arithmetic means is simplified, and a hydraulic pressure of a mill pressurizing device, a roll lift, and a mill motor current of the crushing device are provided. A plurality of multiplication means for multiplying the process data of each of the rotation classifier rotation speed and the mill coal feed amount by a constant; an addition means for adding a signal of each of the plurality of multiplication means; and a response to an output signal of the addition means. A primary delay element that takes into account the delay is provided, and the output of the primary delay element is used as an estimated value of coal crushability.
【0016】即ち、本発明は、図4に例示されているよ
うに、石炭粉砕装置のミル加圧装置油圧01に定数を乗
算する乗算手段52と、ロールリフト02に定数を乗算
する乗算手段54と、ミルモータ電流21に定数を乗算
する乗算手段56と、回転分級器回転数22に定数を乗
算する乗算手段58と、ミル給炭量03に定数を乗算す
る乗算手段60と、乗算手段52と54と56と58と
60を加算する加算手段61と、その加算手段61の出
力信号に応答遅れを加味する一次遅れ要素62を具備と
を具備する構成とする事により、前記一次遅れ要素の出
力を石炭粉砕性推定値として利用できる。That is, according to the present invention, as illustrated in FIG. 4, a multiplying means 52 for multiplying a mill pressurizing apparatus hydraulic pressure 01 of a coal pulverizing apparatus by a constant, and a multiplying means 54 for multiplying a roll lift 02 by a constant. Multiplication means 56 for multiplying the mill motor current 21 by a constant, multiplication means 58 for multiplying the rotation classifier rotation speed 22 by a constant, multiplication means 60 for multiplying the mill coal supply 03 by a constant, and multiplication means 52 By adding an adding means 61 for adding 54, 56, 58, and 60, and a first-order lag element 62 for adding a response delay to the output signal of the adding means 61, the output of the first-order lag element is obtained. Can be used as an estimate of the grindability of the coal.
【0017】[0017]
【発明の実施の形態】以下、本発明を図に示した実施例
を用いて詳細に説明する。但し、この実施例に記載され
る構成要素の種類、相対配置、数、及びその接続状態な
どは特に特定的な記載がない限り、この発明の範囲をそ
れのみに限定する趣旨ではなく単なる説明例に過ぎな
い。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to an embodiment shown in the drawings. However, unless otherwise specified, the types, relative arrangements, numbers, and connection states of the components described in this embodiment are not intended to limit the scope of the present invention, but are merely illustrative examples. It's just
【0018】図5は本発明が適用される石炭粉砕装置
(ミル)の構成図を示す。本装置の構成をその作用に沿
って説明するに、石炭(原炭)は、石炭粉砕装置100上
部から中央に挿設された給炭管1を通って石炭粉砕装置
内底部に設けた回転テーブル2上に落下し、該回転テー
ブル2の回転による遠心力により外周部へと運ばれる。FIG. 5 is a block diagram of a coal crusher (mill) to which the present invention is applied. The configuration of the present apparatus will be described along with its operation. Coal (raw coal) is supplied from a top of a coal pulverizer 100 through a coal feed pipe 1 inserted at the center, and a rotary table provided at the bottom of the coal pulverizer. 2 and is carried to the outer periphery by the centrifugal force generated by the rotation of the rotary table 2.
【0019】前記回転テーブル2の外周部に設けた複数
のロール3は、加圧装置4の油圧01によりテーブル2
に押しつけられており、このロール3とテーブル2間に
おいて石炭の粉砕が行われる。微粉砕された石炭は、一
次空気(熱空気)5により上部へ噴き上げられる。この一
次空気5は、石炭の搬送と乾燥の役割を持っている。噴
き上げられた微粉炭は、比較的粗い粒子は、テーブル2
上に落下し、再粉砕され、比較的細かい粒子のみ、石炭
粉砕装置100上部に設けた回転分級器6へと導かれ
る。ここで、さらに粗い粒子と細かい粒子が再分級さ
れ、比較的細かい粒子7のみ、分級器6を通過し、バー
ナ(不図示)に供給される。The plurality of rolls 3 provided on the outer periphery of the rotary table 2 are moved by the hydraulic pressure 01 of
, And the coal is pulverized between the roll 3 and the table 2. The finely pulverized coal is blown up by primary air (hot air) 5. The primary air 5 has a role of transporting and drying the coal. The pulverized coal that has been blown up is relatively
The particles fall down and are re-ground, and only relatively fine particles are guided to the rotary classifier 6 provided at the top of the coal mill 100. Here, coarser and finer particles are re-classified, and only relatively fine particles 7 pass through a classifier 6 and are supplied to a burner (not shown).
【0020】このような石炭粉砕装置の構成の中で、石
炭の粉砕性は、図6に示すように、減速機21を介して
前記回転テーブル2の回転を行なうミルモータの電流2
1と回転分級器(MRS)6の回転数22の間に相関を
持っていることが図6の解析の結果、明らかになってき
た。In the configuration of such a coal pulverizing apparatus, the pulverizability of the coal is, as shown in FIG. 6, a current of a mill motor for rotating the rotary table 2 through a speed reducer 21.
As a result of the analysis in FIG. 6, it has become clear that there is a correlation between 1 and the rotational speed 22 of the rotation classifier (MRS) 6.
【0021】図6の(A)はミルモータの電流21と給
炭量03の関係を示し、本図より明らかなように、石炭
粉砕性(HGI)が47と比較的硬い炭種を表すオベッ
ト炭は、同じ給炭量03に対して軟らかい炭種であるニ
ューランズ炭(HGI=64)より相対的に大きな値を
示している。石炭粉砕性がその中間(HGI=53)で
あるブルームフィールド炭はその中間の値となってい
る。FIG. 6A shows the relationship between the current 21 of the mill motor and the amount of coal supply 03. As is apparent from this figure, the Obbet coal having a coal grindability (HGI) of 47 and a relatively hard coal type is shown. Shows a relatively larger value than Newlands coal (HGI = 64), which is a soft coal type, for the same coal supply amount 03. Bloomfield coal, whose coal grindability is intermediate (HGI = 53), has an intermediate value.
【0022】図6の(B)は回転分級器(MRS)回転
数22と給炭量03の関係を示す。回転分級器(MR
S)回転数22は制御系の操作端であり、他の指標によ
り決定されるものであるが、石炭粉砕性(HGI)が4
7と比較的硬い炭種を表すオベット炭では小さい値に、
又軟らかい炭種であるニューランズ炭(HGI=64)
では大きな値になっているのが分かる。FIG. 6B shows the relationship between the number of revolutions 22 of the rotary classifier (MRS) and the amount of supplied coal 03. Rotating classifier (MR
S) The number of revolutions 22 is the operating end of the control system, and is determined by other indices.
In the case of Obet charcoal, which represents a relatively hard coal type of 7, it is a small value.
Newlands charcoal, a soft coal type (HGI = 64)
It can be seen that the value is large.
【0023】本実施形態は、このミルモータの電流21
と回転分級器(MRS)回転数22夫々の給炭量03と
の関係に着目したプロセスデータからオンラインで供給
されている石炭の粉砕性を推定する装置に関する。図1
は、本発明の第1の実施形態に係る石炭の粉砕性を推定
する装置で、石炭粉砕装置に供給される石炭流量とミル
モータ電流21、MRS回転数22を入力として、石炭
の粉砕性を出力するように構成されている。In the present embodiment, the current 21
The present invention relates to an apparatus for estimating the pulverizability of coal supplied online from process data focusing on the relationship between the amount of coal supplied and the number of rotations of a rotary classifier (MRS) 22. FIG.
Is an apparatus for estimating the pulverizability of coal according to the first embodiment of the present invention, and outputs the pulverizability of coal by inputting the flow rate of coal supplied to the coal pulverizer, the mill motor current 21, and the MRS rotation speed 22. It is configured to be.
【0024】即ち本装置は、プロセスデータであるミル
モータ電流21と回転分級器(MRS)回転数22とミ
ル給炭量03を入力とし、石炭粉砕性推定値78をオン
ラインで出力するものである。That is, the present apparatus inputs the mill motor current 21, the rotation classifier (MRS) rotation speed 22, and the mill coal feed amount 03, which are process data, and outputs the estimated coal pulverizability 78 online.
【0025】以下図1にしたがって本装置を具体的に説
明する。回転分級器(MRS)回転数22の信号は、高
信号選択器64の入力となり、定数発生器65の出力信
号と比較され高い値の方が選択されて除算器66に出力
される。除算器66では、ミルモータ電流21(a)を
高信号選択器64の出力信号(b)で除算(a/b)
し、減算器68に出力する。Hereinafter, the present apparatus will be described in detail with reference to FIG. The signal of the rotation classifier (MRS) rotation speed 22 is input to the high signal selector 64, compared with the output signal of the constant generator 65, and the higher value is selected and output to the divider 66. The divider 66 divides the mill motor current 21 (a) by the output signal (b) of the high signal selector 64 (a / b).
And outputs the result to the subtractor 68.
【0026】一方、ミル給炭量信号03を入力とする関
数発生器67では、標準炭による基準値を減算器68に
出力する。減算器68は、除算器66の出力信号と関数
発生器67の出力信号を減算し、基準値からのズレ(偏
差)を出力する。On the other hand, the function generator 67 to which the mill coal feed signal 03 is input outputs a reference value based on standard coal to the subtractor 68. The subtractor 68 subtracts the output signal of the divider 66 and the output signal of the function generator 67, and outputs a deviation (deviation) from a reference value.
【0027】減算器68の出力信号(偏差)は、乗算器
69により2乗され、乗算器69の出力信号はさらに定
数発生器70の出力信号k1と乗算器71により乗算さ
れる。一方、乗算器73は、減算器68の出力信号(偏
差)と定数発生器72の出力信号k2を乗算する。The output signal (deviation) of the subtracter 68 is squared by the multiplier 69, and the output signal of the multiplier 69 is further multiplied by the output signal k 1 of the constant generator 70 by the multiplier 71. On the other hand, the multiplier 73 multiplies the output signal (deviation) of the subtractor 68 by the output signal k 2 of the constant generator 72.
【0028】乗算器73の出力信号は、定数発生器76
の出力信号k3と加算器75で加算される。この加算器
75の出力信号は、乗算器71の出力信号と加算器74
により加算された後、該加算器74の出力信号は、一次
遅れ要素77の入力信号となる。そして一次遅れ要素7
7の出力信号が、石炭粉砕性の推定信号78である。The output signal of the multiplier 73 is supplied to a constant generator 76.
Is added to the output signal k 3 by the adder 75. The output signal of the adder 75 is the output signal of the multiplier 71 and the adder 74.
After the addition, the output signal of the adder 74 becomes the input signal of the primary delay element 77. And the first-order lag element 7
The output signal 7 is the estimated signal 78 of the coal crushability.
【0029】従って本実施形態によれば性状の異なる複
数種の石炭の粉砕装置であっても石炭の粉砕性がオンラ
インで推定できる。Therefore, according to the present embodiment, the pulverizability of coal can be estimated online even with a plurality of types of coal pulverizers having different properties.
【0030】さて前記第1の実施形態では、ミルモータ
の電流と回転分級器(MRS)回転数及び給炭量に着目
しているが、石炭の粉砕性(HGI)はこの他にミル加
圧装置の油圧とロールリフトとの相関もかなり大きい。
以下の実施形態はかかる点に着目している。In the first embodiment, the current of the mill motor, the number of revolutions of the rotary classifier (MRS), and the amount of coal supplied are focused on. The correlation between the hydraulic pressure and the roll lift is quite large.
The following embodiment focuses on such a point.
【0031】図2は、本発明の第2の実施形態に係る石
炭の粉砕性を推定する装置で、石炭粉砕装置に供給され
る石炭流量とミル加圧装置油圧、ロールリフトを入力と
して、石炭の粉砕性を出力するように構成されている。
即ち本装置は、図2に示すようにプロセスデータである
ミル加圧装置油圧01とロールリフト02とミル給炭量
03を入力とし、石炭粉砕性推定値16をオンラインで
出力するものである。FIG. 2 shows an apparatus for estimating the pulverizability of coal according to a second embodiment of the present invention. The apparatus receives a flow rate of coal supplied to a coal pulverizer, a hydraulic pressure of a mill press, and a roll lift. It is configured to output the pulverizability.
That is, as shown in FIG. 2, the present apparatus inputs the mill pressurizing apparatus oil pressure 01, the roll lift 02, and the mill coal supply amount 03, which are process data, and outputs the estimated coal crushability 16 online.
【0032】以下図2に従って本装置を具体的に説明す
る。ミル加圧装置の油圧01の信号とロールリフト02
の信号は、乗算器04により乗算される。乗算器04の
出力信号は、減算器06の入力信号となる。一方、ミル
給炭量信号03を入力とする関数発生器05では、標準
炭による基準値を減算器06に出力する。減算器06
は、乗算器04の出力信号と、ミル給炭量03を入力と
する関数発生器05の出力信号を減算し、基準値からの
ズレ(偏差)を出力する。該減算器06の出力信号(偏
差)は、乗算器07により2乗され、乗算器07の出力
信号はさらに定数発生器10の出力信号a1と乗算器1
1により乗算される。Hereinafter, the present apparatus will be described in detail with reference to FIG. The signal of the oil pressure 01 of the mill pressurizing device and the roll lift 02
Are multiplied by the multiplier 04. The output signal of the multiplier 04 becomes the input signal of the subtractor 06. On the other hand, the function generator 05 to which the mill coal supply signal 03 is input outputs a reference value based on standard coal to the subtractor 06. Subtractor 06
Subtracts the output signal of the multiplier 04 from the output signal of the function generator 05 that receives the mill coal supply 03 as an input, and outputs a deviation (deviation) from a reference value. The output signal (deviation) of the subtractor 06 is squared by the multiplier 07, and the output signal of the multiplier 07 is further divided by the output signal a 1 of the constant generator 10 and the multiplier 1
Multiplied by one.
【0033】一方、乗算器09は、減算器06の出力信
号(偏差)と定数発生器08の出力信号a2を乗算す
る。乗算器09の出力信号は、定数発生器12の出力信
号a3と加算器13で加算される。この加算器13の出
力信号は、乗算器11の出力信号と加算器14により加
算された後、一次遅れ要素15の入力信号となる。そし
て一次遅れ要素15の出力信号が、石炭粉砕性の推定信
号16である。On the other hand, the multiplier 09 multiplies the output signal (deviation) of the subtractor 06 by the output signal a 2 of the constant generator 08. The output signal of the multiplier 09 is added by the adder 13 to the output signal a 3 of the constant generator 12. The output signal of the adder 13 is added to the output signal of the multiplier 11 by the adder 14, and then becomes the input signal of the first-order lag element 15. The output signal of the first-order lag element 15 is the estimated signal 16 of the coal crushability.
【0034】従って本実施形態においても、性状の異な
る複数種の石炭の粉砕装置であっても石炭の粉砕性がオ
ンラインで推定できる。Therefore, also in the present embodiment, the pulverizability of coal can be estimated online even with a plurality of types of coal pulverizers having different properties.
【0035】図3、図4は本発明の第3及び第4の実施
形態に係る石炭の粉砕性を推定する装置で、石炭粉砕装
置に供給される石炭流量とミル加圧装置油圧、ロールリ
フト、ミルモータ電流、回転分級器回転数を入力とし
て、石炭の粉砕性を出力するように構成されている。即
ちこれらの実施形態は、プロセスデータであるミル加圧
装置油圧01とロールリフト02とミル給炭量03とミ
ルモータ電流21と回転分級器回転数22を入力とし、
石炭粉砕性推定値41,63をオンラインで出力するも
のである。FIGS. 3 and 4 show an apparatus for estimating the pulverizability of coal according to the third and fourth embodiments of the present invention. The flow rate of coal supplied to the coal pulverizer, the hydraulic pressure of the mill pressurizer, and the roll lift , The mill motor current and the rotational speed of the rotary classifier are input, and the crushability of the coal is output. That is, in these embodiments, the mill pressure oil pressure 01, the roll lift 02, the mill coal supply amount 03, the mill motor current 21, and the rotation classifier rotation speed 22, which are the process data, are input,
The estimated values 41 and 63 of the coal pulverizability are output online.
【0036】以下を図3に従って本第3の実施形態を具
体的に説明する。ミル加圧装置の油圧01の信号は、ミ
ル給炭量03を入力とし標準炭による基準値を出力とす
る関数発生器23の出力信号とともに減算器24に入力
され、減算される。乗算器32は、減算器24の出力信
号(偏差)と定数発生器31の出力信号b1を乗算す
る。ロールリフト02の信号は、ミル給炭量03を入力
とし標準炭による基準値を出力とする関数発生器25の
出力信号とともに減算器26に入力され、減算される。Hereinafter, the third embodiment will be described in detail with reference to FIG. The signal of the oil pressure 01 of the mill pressurizing device is input to the subtractor 24 together with the output signal of the function generator 23 which receives the mill coal supply 03 as input and outputs a reference value based on standard coal, and subtracts it. The multiplier 32 multiplies the output signal (deviation) of the subtractor 24 by the output signal b 1 of the constant generator 31. The signal of the roll lift 02 is input to the subtractor 26 together with the output signal of the function generator 25 that receives the mill feed amount 03 as input and outputs a reference value based on standard coal, and is subtracted.
【0037】乗算器34は、減算器26の出力信号(偏
差)と定数発生器33の出力信号b 2を乗算する。ミル
モータ電流21の信号は、ミル給炭量03を入力とし標
準炭による基準値を出力とする関数発生器27の出力信
号とともに減算器28に入力され、減算される。乗算器
36は、減算器28の出力信号(偏差)と定数発生器3
5の出力信号b 3を乗算する。回転分級器回転数22の
信号は、ミル給炭量03を入力とし標準炭による基準値
を出力とする関数発生器29の出力信号とともに減算器
30に入力され、減算される。乗算器38は、減算器3
0の出力信号(偏差)と定数発生器37の出力信号b4
を乗算する。乗算器32、34、36、38の出力信号
は、加算器39により加算された後、一次遅れ要素40
の入力信号となる。そして一次遅れ要素40の出力信号
が、石炭粉砕性の推定信号41である。The multiplier 34 outputs the output signal of the subtractor 26 (the
Difference) and the output signal b of the constant generator 33 TwoMultiply by mill
The signal of the motor current 21 is input with
The output signal of the function generator 27 which outputs the reference value by the semi-coal
The signal is input to the subtractor 28 together with the signal, and is subtracted. Multiplier
36 is an output signal (deviation) of the subtractor 28 and the constant generator 3
5 output signal b ThreeMultiply by Rotation classifier rotation speed 22
The signal is the standard value of standard coal with the input of mill coal supply 03
And an output signal of a function generator 29 that outputs
30 and subtracted. The multiplier 38 includes the subtractor 3
Output signal (deviation) of 0 and output signal b of constant generator 37Four
Multiply by Output signals of multipliers 32, 34, 36, 38
Is, after being added by the adder 39, a first-order lag element 40
Input signal. And the output signal of the primary delay element 40
Is the estimated signal 41 of the coal pulverizability.
【0038】従って本実施形態においても、性状の異な
る複数種の石炭の粉砕装置であっても石炭の粉砕性がオ
ンラインで推定できる。Therefore, also in this embodiment, the pulverizability of coal can be estimated on-line even with a plurality of types of pulverizers having different properties.
【0039】次に図4に従って第4の実施形態を具体的
に説明する。ミル加圧装置の油圧01の信号は、定数発
生器51の出力信号c1と乗算器52で乗算される。ロ
ールリフト02の信号は、定数発生器53の出力信号c
2と乗算器54で乗算される。ミルモータ電流21の信
号は、定数発生器55の出力信号c3と乗算器56で乗
算される。回転分級器回転数22の信号は、定数発生器
57の出力信号c4と乗算器58で乗算される。ミル給
炭量03の信号は、定数発生器59の出力信号c5と乗
算器60で乗算される。Next, a fourth embodiment will be described in detail with reference to FIG. The signal of the oil pressure 01 of the mill pressurizing device is multiplied by the multiplier 52 with the output signal c 1 of the constant generator 51. The signal of the roll lift 02 is the output signal c of the constant generator 53.
2 is multiplied by the multiplier 54. The signal of the mill motor current 21 is multiplied by the multiplier 56 with the output signal c 3 of the constant generator 55. The signal of the rotation classifier rotation speed 22 is multiplied by the multiplier 58 with the output signal c 4 of the constant generator 57. The signal of the mill coal supply 03 is multiplied by the multiplier 60 with the output signal c 5 of the constant generator 59.
【0040】前記夫々の乗算器52、54、56、5
8、60の出力信号は、加算器61で加算された後、一
次遅れ要素62の入力信号となる。そして一次遅れ要素
62の出力信号が、石炭粉砕性の推定信号63である。
従って本実施形態においても、性状の異なる複数種の石
炭の粉砕装置であっても石炭の粉砕性がオンラインで推
定できる。The respective multipliers 52, 54, 56, 5
After the output signals of 8 and 60 are added by the adder 61, they become the input signal of the first-order lag element 62. The output signal of the primary delay element 62 is the estimated signal 63 of the coal crushability.
Therefore, also in the present embodiment, the pulverizability of coal can be estimated online even with a plurality of types of pulverizers of coal having different properties.
【0041】[0041]
【発明の効果】以上記載のごとく本発明によれば、性状
の異なる複数種の多炭種であっても石炭の粉砕性がオン
ラインで容易に推定できる為に、石炭粉砕装置の最大容
量の把握が容易となり、的確な石炭粉砕装置の台数制御
が可能である。又石炭粉砕装置からバーナに供給される
微粉炭量の予測も適当なモデルを用いることで可能とな
る。更に上記利点を制御装置で活用すれば制御性及び信
頼性の向上が期待できる。等の種々の効果を有す。As described above, according to the present invention, it is possible to easily estimate the pulverizability of coal on a multi-coal type having different properties on-line. And the number of coal crushers can be controlled accurately. Also, the prediction of the amount of pulverized coal supplied from the coal crusher to the burner can be made by using an appropriate model. Further, if the above advantages are utilized in a control device, improvement in controllability and reliability can be expected. And so on.
【図面の簡単な説明】[Brief description of the drawings]
【図1】 本発明の第1の実施形態に係る石炭粉砕性を
推定する装置を表した制御ブロック図である。FIG. 1 is a control block diagram illustrating an apparatus for estimating coal pulverizability according to a first embodiment of the present invention.
【図2】 本発明の第2の実施形態に係る石炭粉砕性を
推定する装置を表した制御ブロック図である。FIG. 2 is a control block diagram showing an apparatus for estimating coal pulverizability according to a second embodiment of the present invention.
【図3】 本発明の第3の実施形態に係る石炭粉砕性を
推定する装置を表した制御ブロック図である。FIG. 3 is a control block diagram illustrating a device for estimating coal pulverizability according to a third embodiment of the present invention.
【図4】 本発明の第4の実施形態に係る石炭の粉砕性
を推定する装置を表した制御ブロック図である。FIG. 4 is a control block diagram illustrating an apparatus for estimating the pulverizability of coal according to a fourth embodiment of the present invention.
【図5】 本発明が適用される石炭粉砕装置の構成図を
表した概要図である。FIG. 5 is a schematic diagram showing a configuration diagram of a coal crusher to which the present invention is applied.
【図6】 (A)はミルモータの電流と給炭量の関係を
示し、(B)は回転分級器(MRS)回転数と給炭量の
関係を示すグラフ図である。6A is a graph showing the relationship between the current of the mill motor and the amount of coal supplied, and FIG. 6B is a graph showing the relationship between the number of revolutions of a rotary classifier (MRS) and the amount of coal supplied.
【図7】 従来技術に係る石炭粉砕装置の制御システム
を表した概略図である。FIG. 7 is a schematic diagram showing a control system of a coal pulverizer according to the related art.
01 ミル加圧装置の油圧 02 ロールリフト 03 ミル給炭量信号 21 ミルモータ電流 22 回転分級器(MRS)回転数 64 高信号選択器 08、10、12、31、33、35、37、51、5
3、55、57、59、65、70、72、76 定
数発生器 66 除算器 05、07、23、25、27、29、67 関数発
生器 06、24、25、2628、30、68 減算器 04、09、11、32、34、36、38、52、5
4、56、58、60、69、71、73 乗算器 13、14、39、74、75 加算器 15、40、62、77 一次遅れ要素 16、41、63、78 石炭粉砕性の推定信号01 Hydraulic pressure of the mill pressurizer 02 Roll lift 03 Mill coal feed signal 21 Mill motor current 22 Rotational classifier (MRS) speed 64 High signal selector 08, 10, 12, 31, 33, 35, 37, 51, 5
3, 55, 57, 59, 65, 70, 72, 76 Constant generator 66 Divider 05, 07, 23, 25, 27, 29, 67 Function generator 06, 24, 25, 2628, 30, 68 Subtractor 04, 09, 11, 32, 34, 36, 38, 52, 5
4, 56, 58, 60, 69, 71, 73 Multiplier 13, 14, 39, 74, 75 Adder 15, 40, 62, 77 Primary delay element 16, 41, 63, 78 Estimated signal of coal grindability
Claims (6)
おいて、 前記粉砕装置より得られる、給炭量、ミルモータの電
流、回転分級器(MRS)の回転数、ミル加圧装置の油
圧、及びロールリフトの各プロセスデータの内より選択
した2以上のプロセスデータと予め設定した定数とを組
み合わせて複数段の演算を行ない、該演算手段の出力信
号に応答遅れを加味して得られた一次遅れ要素の出力を
石炭粉砕性推定値としたことを特徴とする石炭粉砕性自
動推定装置。1. A pulverizer for a plurality of types of coal having different properties, comprising: a coal feed amount, a current of a mill motor, a rotation speed of a rotary classifier (MRS), a hydraulic pressure of a mill pressurizing device, A first-order lag obtained by combining two or more process data selected from each process data of the roll lift and a preset constant to perform a multi-stage calculation and adding a response delay to an output signal of the calculation means. An automatic coal grindability estimating apparatus characterized in that the output of the element is used as a coal grindability estimated value.
おいて、 前記粉砕装置より得られる、給炭量、ミルモータの電
流、回転分級器(MRS)の回転数、ミル加圧装置の油
圧、及びロールリフトの各プロセスデータの内より選択
した一又は複数のプロセスデータを直接若しくは所定の
演算処理により得られたデータと、 該夫々のデータとミル給炭量を入力とする関数発生器か
ら出力される基準値との偏差を求める減算手段と、 前記偏差に係数を含む定数を乗じる乗算手段と、 前記乗算手段の出力信号と定数を加算する加算手段と、 前記2次演算手段の出力信号に応答遅れを加味する一次
遅れ要素とを具備し、 前記一次遅れ要素の出力を石炭粉砕性推定値としたこと
を特徴とする石炭粉砕性自動推定装置。2. A pulverizing apparatus for a plurality of types of coal having different properties, wherein the amount of coal supplied, the current of a mill motor, the number of revolutions of a rotary classifier (MRS), the hydraulic pressure of a mill pressurizing apparatus, One or a plurality of process data selected from each of the roll lift process data is output directly or by a predetermined arithmetic processing, and output from a function generator that receives the respective data and the mill coal supply. Subtraction means for calculating a deviation from a reference value, multiplication means for multiplying the deviation by a constant including a coefficient, addition means for adding a constant to an output signal of the multiplication means, and a response to an output signal of the secondary operation means An automatic coal crushability estimating apparatus, comprising: a first-order lag element that takes into account a delay, wherein an output of the first-order lag element is used as an estimated value of coal crushability.
において、 前記粉砕装置のミルモータ電流と回転分級器の回転数と
の比を求める除算手段と、 前記除算手段で求めた比と、ミル給炭量を入力とする関
数発生器から出力される基準値との偏差を求める減算手
段と、 前記偏差を2乗してさらに係数を乗じたものと、前記偏
差に係数を乗じたものと定数とを加算する、乗算器と加
算器からなる2次演算手段と、 前記2次演算手段の出力信号に応答遅れを加味する一次
遅れ要素とを具備し、 前記一次遅れ要素の出力を石炭粉砕性推定値としたこと
を特徴とする石炭粉砕性自動推定装置。3. The automatic coal crushability estimating apparatus according to claim 2, wherein: a dividing means for obtaining a ratio between a mill motor current of the crushing apparatus and a rotation speed of a rotary classifier; Subtraction means for calculating a deviation from a reference value output from a function generator having a coal supply amount as an input; a value obtained by squaring the deviation and further multiplying a coefficient; a value obtained by multiplying the deviation by a coefficient; And a second-order operation means comprising a multiplier and an adder, and a first-order lag element for adding a response delay to an output signal of the second-order operation means. An automatic coal crushability estimating device characterized by using an estimated value.
において、 前記粉砕装置のミル加圧装置の油圧とロールリフトを乗
算する乗算手段と、 該乗算手段で求めた値と、ミル給炭量を入力とする関数
発生器から出力される基準値との偏差を求める減算手段
と、 その偏差を2乗してさらに係数を乗じたものと、偏差に
係数を乗じたものと、定数とを加算する、乗算器と加算
器からなる2次演算手段と、 前記2次演算手段の出力信号に応答遅れを加味する一次
遅れ要素を具備し、 前記一次遅れ要素の出力を石炭粉砕性推定値としたこと
を特徴とする石炭粉砕性自動推定装置。4. The automatic coal crushability estimating apparatus according to claim 2, wherein: a multiplying means for multiplying a hydraulic pressure of the mill pressurizing device of the crushing device by a roll lift; Subtraction means for obtaining a deviation from a reference value output from a function generator having an input as an amount, a deviation obtained by squaring the deviation and further multiplying a coefficient, a deviation multiplied by a coefficient, and a constant A secondary operation means including a multiplier and an adder for adding, a first-order delay element for adding a response delay to an output signal of the second-order operation means, and an output of the first-order delay element is estimated as a coal pulverizability estimated value. Automatic crushability estimation device for coal.
において、 前記粉砕装置のミル加圧装置油圧、ロールリフト、ミル
モータ電流、及び回転分級器回転数の内より選択された
二つ以上のプロセスデータと、 該プロセスデータ夫々とミル給炭量を入力とする関数発
生器から出力される基準値との偏差を求める複数の減算
手段と、 前記複数の減算手段夫々の偏差と定数を乗算する、前記
減算手段に対応する数の乗算手段と、 前記複数の乗算手段夫々の信号を加算する加算手段と、 その加算手段39の出力信号に応答遅れを加味する一次
遅れ要素を具備し、 前記一次遅れ要素の出力を石炭粉砕性推定値としたこと
を特徴とする石炭粉砕性自動推定装置。5. The automatic coal crushability estimating apparatus according to claim 2, wherein two or more selected from among a mill pressurizing device oil pressure, a roll lift, a mill motor current, and a rotation classifier rotation speed of the crushing device. A plurality of subtraction means for obtaining a deviation between the process data and a reference value output from a function generator having the process data and the amount of mill coal supplied as inputs; multiplying the deviation of each of the plurality of subtraction means by a constant. Multiplying means of a number corresponding to the subtracting means, adding means for adding signals of the plurality of multiplying means, and a first-order lag element for adding a response delay to an output signal of the adding means 39, An automatic coal grindability estimating apparatus characterized in that an output of a delay element is used as a coal grindability estimated value.
において、 前記粉砕装置のミル加圧装置油圧、ロールリフト、ミル
モータ電流、回転分級器回転数、及びミル給炭量夫々の
プロセスデータに定数を乗算する複数の乗算手段と、 前記複数の乗算手段夫々の信号を加算する加算手段と、 その加算手段の出力信号に応答遅れを加味する一次遅れ
要素を具備し、 前記一次遅れ要素の出力を石炭粉砕性推定値としたこと
を特徴とする石炭粉砕性自動推定装置。6. The apparatus for automatically estimating coal pulverizability according to claim 1, wherein the mill pressurizing device hydraulic pressure, roll lift, mill motor current, rotation classifier rotation speed, and mill coal feed amount of the pulverizing device are respectively included in the process data. A plurality of multiplying means for multiplying a constant; an adding means for adding a signal of each of the plurality of multiplying means; a first-order lag element for adding a response delay to an output signal of the adding means; An automatic coal crushability estimating device, wherein is an estimated value of coal crushability.
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Cited By (2)
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JP2019209296A (en) * | 2018-06-07 | 2019-12-12 | 三菱日立パワーシステムズ株式会社 | Control device, control system, control method and program |
KR102146814B1 (en) * | 2019-05-28 | 2020-08-21 | 한국생산기술연구원 | Method for measuring the grindability of coal and biomass mixture fuels |
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JP2019209296A (en) * | 2018-06-07 | 2019-12-12 | 三菱日立パワーシステムズ株式会社 | Control device, control system, control method and program |
WO2019235604A1 (en) * | 2018-06-07 | 2019-12-12 | 三菱日立パワーシステムズ株式会社 | Control device, control system, control method, and program |
KR102146814B1 (en) * | 2019-05-28 | 2020-08-21 | 한국생산기술연구원 | Method for measuring the grindability of coal and biomass mixture fuels |
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