JPS6315360Y2 - - Google Patents
Info
- Publication number
- JPS6315360Y2 JPS6315360Y2 JP18203984U JP18203984U JPS6315360Y2 JP S6315360 Y2 JPS6315360 Y2 JP S6315360Y2 JP 18203984 U JP18203984 U JP 18203984U JP 18203984 U JP18203984 U JP 18203984U JP S6315360 Y2 JPS6315360 Y2 JP S6315360Y2
- Authority
- JP
- Japan
- Prior art keywords
- gas phase
- mode
- polarity
- controller
- atmosphere
- 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
Links
- 238000009530 blood pressure measurement Methods 0.000 claims description 2
- 239000012071 phase Substances 0.000 description 16
- 239000007791 liquid phase Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002994 raw material Substances 0.000 description 2
- 230000006837 decompression Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
Landscapes
- Paper (AREA)
Description
【考案の詳細な説明】
〈産業上の利用分野〉
本考案は抄紙機においてワイヤパート上に原料
を流出供給するためのヘツドボツクス（又はスト
ツクインレツト）における気相部の圧力制御に関
する。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to pressure control of a gas phase in a head box (or stock inlet) for supplying raw material onto a wire part in a paper machine.
〈従来技術〉
第３図に基づき従来技術を説明する。１はヘツ
ドボツクス、１０１はワイヤパートへの出力口
で、１内には原料２が一定レベルＨに保持されて
存在し液相部を形成し、上部に気相部３が形成さ
れている。液相部のレベルＨが一定に制御される
ことにより液相部による流出口１０１の押出し圧
力は一定値に保たれるが、紙の銘柄を変更した場
合圧力を上記一定値より増加又は減少させて変更
したい場合が生ずる。<Prior art> The prior art will be explained based on FIG. Reference numeral 1 denotes a head box, 101 an output port to the wire part, inside of which raw material 2 is maintained at a constant level H to form a liquid phase portion, and a gas phase portion 3 is formed above. By controlling the level H of the liquid phase part to be constant, the extrusion pressure of the liquid phase part at the outlet 101 is kept at a constant value, but if the brand of paper is changed, the pressure may be increased or decreased from the above constant value. There may be cases where you want to make changes.
４は気相部を加圧又は減圧するためのポンプ、
５０１，５０２はポンプの入力側及び出力側に設
けた開閉弁、５０３気相部の空気をポンプの入力
側に導く開閉弁、５０４はポンプ出力を大気Ａに
導くための開閉弁であり、気相部の加圧時は５０
１，５０２が開、５０３，５０４が閉となり、減
圧時には５０１，５０２が閉、５０３，５０４が
開に制御される。 4 is a pump for pressurizing or depressurizing the gas phase;
501 and 502 are on-off valves provided on the input and output sides of the pump; 503 is an on-off valve that guides air in the gas phase to the input side of the pump; 504 is an on-off valve that leads the pump output to the atmosphere A; 50 when pressurizing the phase part
1,502 are open, 503, 504 are closed, and when the pressure is reduced, 501, 502 are controlled to be closed, and 503, 504 are controlled to be open.
６は気相部の圧力調節計、７は気相部の圧力セ
ンサでPVはその測定値、８は気相部の空気を大
気にブリードし、又は大気を気相部にブリードす
る制御弁である。調節計６は測定値PVと気相部
の圧力設定値SVを受け制御弁８に操作出力MV
を与え、PVがSVと一致するようにブリード量を
制御する。 6 is a pressure regulator in the gas phase, 7 is a pressure sensor in the gas phase, and PV is its measured value. 8 is a control valve that bleeds air in the gas phase to the atmosphere or bleeds the atmosphere to the gas phase. be. The controller 6 receives the measured value PV and the pressure set value SV of the gas phase and sends the operation output MV to the control valve 8.
and control the amount of bleed so that PV matches SV.
この場合、ポンプ４により気相部３が加圧され
ているモードでは（SV−PV）の極性が正ならば
MVが増加して制御弁８を閉めてブリード量を抑
へ、（SV−PV）の極性が負ならばMV値が減少
して制御弁を開けてブリード量を増加させてSV
値とPV値を一致させる。 In this case, in the mode where the gas phase part 3 is pressurized by the pump 4, if the polarity of (SV-PV) is positive,
When MV increases, control valve 8 is closed to suppress the amount of bleed, and if the polarity of (SV-PV) is negative, the MV value decreases and the control valve is opened to increase the amount of bleed.
Match the value and PV value.
逆にポンプ４により気相部３が減圧されている
モードでは（SV−PV）の極性に基づくMV値の
極性を反転させる必要があり、一般には調節計の
出力極性を切換えるスイツチＳをオペレータがマ
ニユアル操作している。 Conversely, in a mode where the gas phase 3 is depressurized by the pump 4, it is necessary to reverse the polarity of the MV value based on the polarity of (SV-PV), and generally the operator operates the switch S that changes the output polarity of the controller. It is operated manually.
従つて銘柄変更で加圧モード，減圧モードの切
換えを行う都度極性切換スイツチを切換える操作
が必要であり煩雑であると共に切換え忘れによる
制御不良事故も発生しやすい。 Therefore, it is necessary to switch the polarity switch each time the pressurization mode and depressurization mode are changed due to a brand change, which is complicated and also tends to cause malfunction accidents due to forgetting to switch.
〈考案が解決しようとする問題点〉
本考案は加圧モード，減圧モードにより自動的
に圧力調節計の出力の極性を切換えることにより
上記問題点を解消した制御装置の実現を目的とす
る。<Problems to be Solved by the Invention> The purpose of the present invention is to realize a control device that solves the above-mentioned problems by automatically switching the polarity of the output of the pressure regulator depending on the pressurization mode and depressurization mode.
〈構成〉
本考案の構成上の特徴は、ポンプにより加圧又
は減圧されるヘツドボツクス気相部の圧力測定値
と設定値に基づき、上記気相部の気体を大気にブ
リードし又は大気を上記気相部にブリードする制
御弁を操作する調節計を有するヘツドボツクス制
御装置において、上記加圧又は減圧のモード信号
を発生する手段と、この手段よりのモード信号に
基づいて上記調節計の操作出力の極性を自動的に
切換える手段とを具備した点にある。<Structure> The structural feature of the present invention is that based on the pressure measurement value and set value of the head box gas phase section which is pressurized or depressurized by a pump, the gas in the gas phase section is bled to the atmosphere or the atmosphere is converted to the atmosphere. In a headbox control device having a controller that operates a control valve that bleeds into a phase part, means for generating a mode signal for pressurization or depressurization, and a polarity of the operation output of the controller based on the mode signal from this means. and a means for automatically switching between the two.
〈作用〉
加圧モード，減圧モードを表わす信号に基づい
て圧力調節計の操作出力の極性が自動的に切換え
られる。<Operation> The polarity of the pressure controller's operation output is automatically switched based on the signal representing the pressurization mode and depressurization mode.
〈実施例〉
第１図の構成図、第２図のフローチヤートに基
づき本考案の一実施例を説明する。第１図におい
て第３図と同一構成要素には同一符号を付して説
明は省略する。<Example> An example of the present invention will be described based on the configuration diagram in FIG. 1 and the flowchart in FIG. 2. Components in FIG. 1 that are the same as those in FIG. 3 are given the same reference numerals and their explanations will be omitted.
第１図における調節計６はソフトウエアにより
各種制御，演算機能が実現されるマイクロコンピ
ユータを用いた調節計であり、モード信号enによ
り加圧モードか減圧モードかを判断し、操作出力
の極性を反転させる。 The controller 6 in Fig. 1 is a controller using a microcomputer that realizes various control and calculation functions by software, and determines whether it is pressurization mode or depressurization mode based on the mode signal e n , and determines the polarity of the operation output. Invert.
モード信号enはポンプ４の出力を大気に導く開
閉弁５０４の開閉信号を用いる。即ち５０４が閉
ならば加圧モード、開ならば減圧モードと認識す
る。 The mode signal e n uses an opening/closing signal of an opening/closing valve 504 that guides the output of the pump 4 to the atmosphere. That is, if 504 is closed, it is recognized as pressurization mode, and if it is open, it is recognized as depressurization mode.
第２図は信号処理の手順を示すフローチヤート
であり、調節計６の出力MV値がPVとSVに基づ
いて０〜１に変化する場合、加圧モードであれば
MV値をそのまま出力し、減圧モードであれば
（１−MV）を出力する。 Figure 2 is a flowchart showing the signal processing procedure. When the output MV value of the controller 6 changes from 0 to 1 based on PV and SV, if the pressure mode is
Outputs the MV value as is, and outputs (1-MV) if it is in decompression mode.
本考案においてモード信号enの取出し手段は実
施例に限定されず種々の方法が考えられ、加圧，
減圧用のポンプに正逆転形を用いた場合はこの回
転の極性信号を用いてもよい。 In the present invention, the means for extracting the mode signal e n is not limited to the embodiment, and various methods can be considered, such as pressurization,
If a forward/reverse type pump is used for pressure reduction, this rotation polarity signal may be used.
〈効果〉
以上説明したように、本考案によればヘツドボ
ツクスへの加圧，減圧のモード変更に伴う調節計
の出力極性が自動化され、オペレータの負担が軽
減されると共に切換え忘れによる制御不良事故の
発生を防止することができる。<Effects> As explained above, according to the present invention, the output polarity of the controller is automated when the mode of pressurization and depressurization of the head box is changed, which reduces the burden on the operator and prevents control failure accidents caused by forgetting to change the mode. Occurrence can be prevented.
第１図は本考案の一実施例を示す構成図、第２
図は信号の処理手順を示すフローチヤート、第３
図は従来装置の一例を示す構成図である。
１……ヘツドボツクス、２……液相部、３……
気相部、４……ポンプ、５０１〜５０４……開閉
弁、６……圧力調節計、７……圧力センサ、８…
…制御弁。
Fig. 1 is a configuration diagram showing one embodiment of the present invention;
The figure is a flowchart showing the signal processing procedure, Part 3.
The figure is a configuration diagram showing an example of a conventional device. 1...Head box, 2...Liquid phase part, 3...
Gas phase part, 4...Pump, 501-504...Opening/closing valve, 6...Pressure regulator, 7...Pressure sensor, 8...
...control valve.
Claims (1)
ス気相部の圧力測定値と設定値に基づき、上記気
相部の気体を大気にブリードし又は大気を上記気
相部にブリードする制御弁を操作する調節計を有
するヘツドボツクス制御装置において、上記加圧
又は減圧のモード信号を発出する手段と、この手
段よりのモード信号に基づいて上記調節計の操作
出力の極性を自動的に切換える手段とを具備した
抄紙機のヘツドボツクス制御装置。 A controller that operates a control valve that bleeds the gas in the gas phase to the atmosphere or bleeds the atmosphere to the gas phase based on the pressure measurement value and set value of the headbox gas phase that is pressurized or depressurized by the pump. A paper machine comprising: a headbox control device having a headbox control device, comprising: means for issuing the pressurization or depressurization mode signal; and means for automatically switching the polarity of the operational output of the controller based on the mode signal from the means. Headbox control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18203984U JPS6315360Y2 (en) | 1984-11-30 | 1984-11-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18203984U JPS6315360Y2 (en) | 1984-11-30 | 1984-11-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6198899U JPS6198899U (en) | 1986-06-24 |
| JPS6315360Y2 true JPS6315360Y2 (en) | 1988-04-28 |
Family
ID=30739575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18203984U Expired JPS6315360Y2 (en) | 1984-11-30 | 1984-11-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6315360Y2 (en) |
-
1984
- 1984-11-30 JP JP18203984U patent/JPS6315360Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6198899U (en) | 1986-06-24 |
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