JP3227288B2 - Paper machine dryer steam differential pressure controller - Google Patents
Paper machine dryer steam differential pressure controllerInfo
- Publication number
- JP3227288B2 JP3227288B2 JP30031793A JP30031793A JP3227288B2 JP 3227288 B2 JP3227288 B2 JP 3227288B2 JP 30031793 A JP30031793 A JP 30031793A JP 30031793 A JP30031793 A JP 30031793A JP 3227288 B2 JP3227288 B2 JP 3227288B2
- Authority
- JP
- Japan
- Prior art keywords
- dryer
- differential pressure
- steam
- motor
- load
- 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.)
- Expired - Fee Related
Links
Landscapes
- Paper (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、抄紙機のドライヤ蒸気
差圧制御装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dryer differential pressure control device for a paper machine.
【０００２】[0002]
【従来の技術】紙の製造工程において、抄紙機ヘッドボ
ックスよりワイヤに噴出された原料はプレス部で圧縮さ
れ、ついでドライヤ装置で乾燥された後、リールに巻き
取られる。2. Description of the Related Art In a paper manufacturing process, a raw material jetted from a paper machine head box onto a wire is compressed by a press unit, dried by a drier, and wound up on a reel.
【０００３】図２は従来のドライヤの制御原理を示すブ
ロック図であり、ドライヤ１には入気側蒸気管３から蒸
気が供給され、それを利用して紙２が乾燥される。この
後、蒸気は排気側蒸気管４を通じて放出される。調節弁
７Ａはドライヤ１を通過する紙２の乾燥度に応じて差圧
調節器６からの信号で開閉される。その差圧調節器６に
は差圧設定器７の設定信号と圧力検出器５の信号が入力
される。FIG. 2 is a block diagram showing the control principle of a conventional dryer. Steam is supplied to a dryer 1 from an inlet-side steam pipe 3, and the paper 2 is dried using the steam. Thereafter, the steam is discharged through the exhaust-side steam pipe 4. The control valve 7A is opened and closed by a signal from the differential pressure regulator 6 according to the degree of drying of the paper 2 passing through the dryer 1. The setting signal of the differential pressure setting device 7 and the signal of the pressure detector 5 are input to the differential pressure adjusting device 6.
【０００４】これと独立してドライヤ１はドライヤ電動
機１１にて駆動される。ドライヤ電動機１１はドライヤ
用電動機駆動装置１１Ａで制御されている。ドライヤ用
電動機駆動装置１１Ａは速度設定器９の出力を基準と
し、速度検出器１４で検出された電動機速度を速度フィ
ードバック値として速度制御器１０で回転数制御されて
いる。電流制御器１２は、速度制御器１０の出力である
電流指令信号と、電流検出器１３で検出された電流値と
の偏差が零になるように電流制御を行う。電流制御器１
２にはあらかじめドライヤ１及びその駆動系を含む機械
損動力と慣性分動力を補うための信号が負荷補償設定器
１６から与えられている。[0004] Independently, the dryer 1 is driven by a dryer motor 11. The dryer motor 11 is controlled by a dryer motor driver 11A. The speed of the dryer motor driving device 11A is controlled by the speed controller 10 based on the output of the speed setting device 9 and the speed of the motor detected by the speed detector 14 as a speed feedback value. The current controller 12 controls the current so that the deviation between the current command signal output from the speed controller 10 and the current value detected by the current detector 13 becomes zero. Current controller 1
A signal for supplementing mechanical loss power and inertia component power including the dryer 1 and its drive system is supplied from the load compensation setter 16 to the dryer 2 in advance.
【０００５】[0005]
【発明が解決しようとする課題】ところが、図２に示す
従来の制御装置では、ドライヤの差圧と速度の制御は独
立に行われているため、たとえばドライヤ操業停止後の
運転再開時等、ドライヤ内蒸気が凝集して水となった場
合、蒸気圧が少ないと凝集した水が排出できず、その水
分による加重ならびに慣性分が増加し、結果としてドラ
イヤの機械損動力ならびに慣性分動力が増加することが
あった。そのため、電動機負荷がその能力を超え駆動装
置は自身の保護のために停止し操業が中断にいたること
があるという問題があった。However, in the conventional control device shown in FIG. 2, since the control of the differential pressure and the speed of the dryer is performed independently, for example, after the dryer operation is stopped.
When steam in the dryer is condensed into water, such as when restarting operation
If the vapor pressure is low, coagulated water cannot be discharged,
Weight and inertia increase, and as a result
The mechanical loss power and inertial power of the ear sometimes increased . Therefore, there is a problem in that the motor load exceeds the capacity and the drive unit stops for its own protection and the operation may be interrupted.
【０００６】本発明が解決すべき課題は、抄紙機のドラ
イヤが本来の負荷量を超えた場合に、誤操作、誤設定な
どでドライヤを停止させないようにした制御装置を提供
することにある。An object of the present invention is to provide a control device which does not stop the dryer due to erroneous operation or erroneous setting when the dryer of the paper machine exceeds the original load.
【０００７】[0007]
【課題を解決するための手段】前記課題を解決するた
め、本発明の抄紙機ドライヤ蒸気差圧制御装置は、蒸気
によって紙の乾燥を行う回転ドラム式のドライヤに装備
され、蒸気量を前記ドライヤに対する入気蒸気圧と排気
蒸気圧との圧力差があらかじめ設定された差圧となるよ
うに調整する差圧調節器とを備えた抄紙機ドライヤ蒸気
差圧制御装置において、前記ドライヤの回転駆動を行う
電動機の負荷電流に対応した信号と前記あらかじめ設定
された負荷補償値とを比較する判定器を設け、この判定
器により前記ドライヤの負荷が前記負荷補償値を超えた
と判定されたときに、前記差圧調節器へ与える差圧設定
値が大きくなるようにしたものである。In order to solve the above-mentioned problems, a paper machine dryer differential pressure control apparatus of the present invention is provided in a rotary drum type dryer for drying paper with steam, and the steam amount is controlled by the dryer. In a paper machine dryer steam differential pressure control device comprising a differential pressure regulator for adjusting the pressure difference between the inlet steam pressure and the exhaust steam pressure to a preset differential pressure, the rotational drive of the dryer is A determiner for comparing a signal corresponding to the load current of the motor to be performed with the preset load compensation value is provided, and when it is determined that the load of the dryer exceeds the load compensation value by the determiner, the The differential pressure set value given to the differential pressure regulator is increased.
【０００８】[0008]
【作用】電動機負荷を常時監視し、あらかじめ設定され
た負荷補償値よりも大きくなったときは差圧制御系への
差圧指令値を増加させ、ドライヤ内の余分な凝集した水
を排出し、ドライヤ駆動装置にとって適正な負荷を与え
る差圧制御を実施する。The motor load is constantly monitored, and when the load becomes larger than a preset load compensation value, the differential pressure command value to the differential pressure control system is increased so that excess coagulated water in the dryer is obtained. , And a differential pressure control for giving an appropriate load to the dryer driving device is performed.
【０００９】[0009]
【実施例】次に本発明の実施例について図面を参照して
説明する。図１は本発明の実施例の構成を示すブロック
図である。本実施例では、前記従来の図２の構成に負荷
判定器８を追加したところが特徴である。図１におい
て、図２と同様の構成要素については同一の符号を付し
て説明を省略する。Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the embodiment of the present invention. This embodiment is characterized in that a load determiner 8 is added to the conventional configuration of FIG. 1, the same components as those in FIG. 2 are denoted by the same reference numerals, and description thereof will be omitted.
【００１０】図１においては、電流検出器１３によって
検出された電動機１１の負荷電流と、負荷補償設定器１
６によってあらかじめ設定された負荷補償値とを、負荷
判定器８によって比較するようにしている。負荷電流が
負荷補償値よりも小さいときは正常にドライヤ１が駆動
されているため、ドライヤ１の蒸気量の制御は図２に示
した従来の差圧制御と同様に行われる。In FIG. 1, the load current of the motor 11 detected by the current detector 13 and the load compensation setter 1
6 is compared with a load compensation value set in advance by the load determiner 8. When the load current is smaller than the load compensation value, the dryer 1 is normally driven, and the control of the steam amount of the dryer 1 is performed in the same manner as the conventional differential pressure control shown in FIG.
【００１１】ドライヤ１の蒸気差圧が少なくなって蒸気
が凝集した水となってドライヤ１内部に溜まる等の理由
により、電動機１１の負荷電流が負荷補償値を超えたと
きは、負荷判定器８から差圧制御装置側に所定の大きさ
の信号を出力し、差圧設定器７から出力される差圧設定
値と加算し、あたかも差圧調節器６への差圧設定が増加
したかのような差圧制御を行う。この制御によってドラ
イヤ１内部の凝集した水が排出される。ドライヤ１の駆
動用電動機１１の負荷電流が減少し、負荷補償設定器１
６によってあらかじめ設定された負荷補償値よりも小さ
くなったときは、負荷判定器８の出力は０になり、再び
正常な差圧制御が行われる。When the load current of the electric motor 11 exceeds the load compensation value due to the reason that the steam differential pressure of the dryer 1 is reduced and the steam is condensed as water that is agglomerated , the load judging device 8 And outputs a signal of a predetermined magnitude to the differential pressure control device side, adds the signal to the differential pressure set value output from the differential pressure setter 7, and checks whether the differential pressure setting to the differential pressure regulator 6 has increased. Such differential pressure control is performed. By this control, water condensed in the dryer 1 is discharged. The load current of the driving motor 11 of the dryer 1 decreases, and the load compensation setting device 1
When the load compensation value becomes smaller than the preset load compensation value, the output of the load determiner 8 becomes 0, and normal differential pressure control is performed again.
【００１２】[0012]
【発明の効果】上述したように、本発明によりドライヤ
差圧制御が常に駆動装置の能力内で実施され、誤操作、
誤設定等に起因する突発的な操業停止を自動的に回避す
ることができ、安定した紙の生産に寄与することができ
る。As described above, according to the present invention, the dryer differential pressure control is always performed within the capability of the driving device, and
It is possible to automatically avoid sudden stoppage of operation due to erroneous setting or the like, and it is possible to contribute to stable paper production.
【図１】 本発明の実施例の構成を示すブロック図であ
る。FIG. 1 is a block diagram showing a configuration of an embodiment of the present invention.
【図２】 従来のドライヤ差圧制御装置の例を示すブロ
ック図である。FIG. 2 is a block diagram showing an example of a conventional dryer differential pressure control device.
１ ドライヤ、２ 紙、３ 入気側蒸気管、４ 排気側
蒸気管、５ 圧力検出器、６ 差圧調節器、７ 差圧設
定器、７Ａ 調節弁、８ 負荷判定器、９ 速度設定
器、１０ 速度制御器、１１ ドライヤ電動機、１１Ａ
ドライヤ電動機用駆動装置、１２ 電流制御器、１３
電流検出器、１４ 速度検出器、１６ 負荷補償設定
器1 dryer, 2 paper, 3 inlet steam pipe, 4 exhaust steam pipe, 5 pressure detector, 6 differential pressure regulator, 7 differential pressure setting device, 7A control valve, 8 load judgment device, 9 speed setting device, 10 speed controller, 11 dryer motor, 11A
Driving device for dryer motor, 12 Current controller, 13
Current detector, 14 Speed detector, 16 Load compensation setting device
───────────────────────────────────────────────────── フロントページの続き (72)発明者 大久保 勇 東京都武蔵野市中町２丁目９番32号 横 河電機株式会社内 審査官 澤村 茂実 (56)参考文献 特開 昭56−20694（ＪＰ，Ａ) 特開 昭62−184189（ＪＰ，Ａ) 特開 昭60−18694（ＪＰ，Ａ) 特表 平１−502038（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) D21F 5/00 - 5/20 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Isamu Okubo 2-93-2, Nakamachi, Musashino-shi, Tokyo Examiner in Yokogawa Electric Corporation Shigemi Sawamura (56) References JP-A-56-20694 (JP, A JP-A-62-184189 (JP, A) JP-A-60-18694 (JP, A) JP-T1-502038 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) D21F 5/00-5/20
Claims (1)
ム式のドライヤ１に装備され、蒸気量を前記ドライヤ１
に対する入気蒸気圧と排気蒸気圧との圧力差があらかじ
め設定された差圧となるように調整する差圧調節器６
と、前記ドライヤ１を回転駆動する電動機１１を駆動す
る電動機駆動装置１１Ａとを備えた抄紙機ドライヤ蒸気
差圧制御装置において、 前記ドライヤ１の回転駆動を行う電動機１１の負荷電流
に対応した信号とあらかじめドライヤ１および電動機１
１の駆動系を含む機械損動力と慣性分動力を補うために
設定された負荷補償値とを比較する判定器８を設け、こ
の判定器８により前記ドライヤ１の負荷が前記負荷補償
値を超えたと判定されたときに、前記差圧調節器６へ与
える差圧設定値が大きくなるようにしたことを特徴とす
る抄紙機ドライヤ差圧制御装置。1. A rotary drum type dryer 1 for drying paper 2 with steam, wherein the amount of steam is controlled by the dryer 1.
Pressure regulator 6 that adjusts the pressure difference between the inlet steam pressure and the exhaust steam pressure to a preset differential pressure.
And a motor corresponding to a load current of the motor 11 for rotating the dryer 1 in a paper machine dryer steam differential pressure control device provided with a motor driving device 11A for driving the motor 11 for rotating the dryer 1. Dryer 1 and motor 1 in advance
1 is provided for comparing the mechanical loss power including the drive system 1 with a load compensation value set for compensating for the inertial component power, and the load of the dryer 1 is reduced by the determiner 8. A differential pressure control device for a paper machine dryer, characterized in that when it is determined that the compensation value has been exceeded, the differential pressure set value given to the differential pressure regulator 6 is increased.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30031793A JP3227288B2 (en) | 1993-11-30 | 1993-11-30 | Paper machine dryer steam differential pressure controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP30031793A JP3227288B2 (en) | 1993-11-30 | 1993-11-30 | Paper machine dryer steam differential pressure controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07150495A JPH07150495A (en) | 1995-06-13 |
| JP3227288B2 true JP3227288B2 (en) | 2001-11-12 |
Family
ID=17883330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP30031793A Expired - Fee Related JP3227288B2 (en) | 1993-11-30 | 1993-11-30 | Paper machine dryer steam differential pressure controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3227288B2 (en) |
-
1993
- 1993-11-30 JP JP30031793A patent/JP3227288B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07150495A (en) | 1995-06-13 |
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