JPH03126A - Controlling method for liquid surface in tank - Google Patents
Controlling method for liquid surface in tankInfo
- Publication number
- JPH03126A JPH03126A JP13561589A JP13561589A JPH03126A JP H03126 A JPH03126 A JP H03126A JP 13561589 A JP13561589 A JP 13561589A JP 13561589 A JP13561589 A JP 13561589A JP H03126 A JPH03126 A JP H03126A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- flow rate
- pipe
- liquid level
- liquid
- 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
- 239000007788 liquid Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000007664 blowing Methods 0.000 claims description 8
- 239000004568 cement Substances 0.000 abstract description 11
- 239000002002 slurry Substances 0.000 abstract description 8
- 230000001105 regulatory effect Effects 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 description 7
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は液体を貯蔵するタンク内の液面を制御する方法
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for controlling the liquid level in a tank for storing liquid.
従来、タンク内の液面を制御する際には第１図のように
タンク（イ）の液面上にボールバルブ（ロ）を取り付け
て液面制御する方法が一般的であった・
〔発明が解決しようとする課題〕
しかしながら、上述のようにボールバルブ（ロ）を用い
たタンク（イ）内の液面制御方法はセメント等の抄造機
の液面制御を行う場合には液面高さの精度が要求される
ためにあまり好ましくないものであった。Conventionally, when controlling the liquid level in a tank, the common method was to install a ball valve (b) above the liquid level in the tank (a) as shown in Figure 1. However, as mentioned above, the method of controlling the liquid level in the tank (a) using the ball valve (b) is difficult to control the liquid level in a cement or other paper making machine. This was not very desirable because it required accuracy.
この液面高さの精度がでていないと得られるセメント板
の板厚にバラツキが生ずるという問題があった。If the liquid level height is not accurate, there is a problem in that the thickness of the resulting cement board varies.
本発明は上記課題を解決するためになされたものであり
、その目的とするところはタンク内の液面制御を精度よ
くできるタンク内の液面制御方法にある。The present invention has been made to solve the above problems, and its purpose is to provide a method for controlling the liquid level in a tank, which allows the liquid level in the tank to be controlled with high precision.
上記目的を達成するために、本発明はタンク２の液中に
エアー吹出管５を取り付け、このエアー吹出管５によっ
て生ずる大気圧との差圧検出器６、で検出し、さらにこ
の差圧検出器６の信号をコントローラー７に送信し、流
ｆｊｋ１１整パイプ８に取り付けられている流量調整バ
ルブ９を開閉してりタンク内の液面を制御することを特
徴とするタンクの液面制御方法である。In order to achieve the above object, the present invention installs an air blowing pipe 5 into the liquid in the tank 2, detects the pressure difference between the air pressure generated by the air blowing pipe 5 and the atmospheric pressure with a detector 6, and further detects this differential pressure. A method for controlling liquid level in a tank, which is characterized by transmitting a signal from a device 6 to a controller 7 and opening and closing a flow rate adjustment valve 9 attached to a flow regulating pipe 8 to control the liquid level in the tank. be.
タンク２の液中にエアー吹出管５を取り付け、このエア
ー吹出管５によって生ずる大気圧との差圧検出器６で検
出するようにしているから、液面の振れによる影響を受
けにくく常に一定の差圧を検出することができる。An air blow-off pipe 5 is attached to the liquid in the tank 2, and the differential pressure between the air pressure and the atmospheric pressure generated by the air blow-off pipe 5 is detected by the detector 6, so that the pressure is always constant and not affected by fluctuations in the liquid level. Differential pressure can be detected.
以下、本発明の一実施例に係る第２図に基づいて説明す
る。Hereinafter, an embodiment of the present invention will be explained based on FIG. 2.
Ａはハチニック式の丸網シリンダー１をタンク２内に配
設し、この丸網シリンダー上に回転フェルト３を配設し
てタンク２内に供給されるセメントスラリー４が耐着す
るようにした抄造機である。A is a papermaking machine in which a Hachinik-type circular mesh cylinder 1 is placed inside a tank 2, and a rotating felt 3 is placed on the circular mesh cylinder to prevent the cement slurry 4 supplied into the tank 2 from adhering to it. It is a machine.
この抄造機Ａのタンク２のセメントスラリー４中にエア
ー吹出管５を取り付け、このエアー吹出管５によって生
ずる大気圧との背圧による差圧を差圧検出器６で検出し
、さらにこの差圧検出器６の信号をコントローラー７に
送信し、セメントスラリー４の流量調整パイプ８に取り
付けられているサーボモーターなどによって流量調整バ
ルブ９を開閉してタンク７内の液面を制御するようにし
たタンク２内の液面制御方法である。An air blowing pipe 5 is installed in the cement slurry 4 of the tank 2 of this paper making machine A, and the differential pressure caused by the back pressure with atmospheric pressure generated by the air blowing pipe 5 is detected by a differential pressure detector 6. A tank in which the signal from a detector 6 is sent to a controller 7 and the liquid level in the tank 7 is controlled by opening and closing a flow rate adjustment valve 9 using a servo motor or the like attached to a flow rate adjustment pipe 8 of the cement slurry 4. This is the liquid level control method in 2.
尚、タンク２は複数個でも一個でも良いものであって又
、タンク２内の液はセメントスラリーのみならず繊維ス
ラリーや水等でもよいものである〔発明の効果〕
以上のように、本発明はタンクの液中にエアー吹出管を
取り付け、このエアー吹出管によって生ずる大気圧との
差圧を差圧検出器で検出し、さらにこの差圧検出器の信
号をコントローラーに送信し、流！調整パイプに取り付
けられている流量調整パイプを開閉してタンク内の液面
を制御するようにして成るから、従来のボールバルブに
よる液面制御とは異なりエアー吹出管と大気圧との背圧
を差圧として検出するので液面の振れによる影響を受け
にくくなり液面制御の精度の高い方法である。そのため
に、例えばセメント板を成形するセメントスラリー等に
用いれば板厚のバラツキがなくなり品質向上にも寄与す
ることができる。Incidentally, the tank 2 may be a plurality of tanks or one tank, and the liquid in the tank 2 may be not only cement slurry but also fiber slurry, water, etc. [Effects of the Invention] As described above, the present invention installs an air blow-off pipe into the liquid in the tank, uses a differential pressure detector to detect the difference in pressure between atmospheric pressure and the air pressure generated by the air blow-off pipe, and then sends the signal from this pressure difference detector to the controller, allowing the flow to flow! The liquid level in the tank is controlled by opening and closing the flow rate adjusting pipe attached to the adjusting pipe, so unlike liquid level control using conventional ball valves, the back pressure between the air blowing pipe and atmospheric pressure is controlled. Since it is detected as a differential pressure, it is less susceptible to fluctuations in the liquid level, making it a highly accurate method of liquid level control. Therefore, if it is used, for example, as a cement slurry for forming cement plates, it can eliminate variations in plate thickness and contribute to quality improvement.
第１図は従来のタンク内の液面を制御する装置を示す要
部の縦断面図、第２図は本発明の一実施例に係るタンク
内の液面制御方法を示す要部の概略図である。
Ａ・・・抄造機、
１・・・丸網シリンダー、２・・・タンク、３・・・回
転フェルト、４・・・セメントスラリー、５・・・エア
ー吹出管、６・・・差圧検出器、７・・・コントローラ
ー ８・・・流量調整パイプ、９・・・流ｉｔ調整バル
ブ。FIG. 1 is a vertical sectional view of the main parts showing a conventional device for controlling the liquid level in a tank, and FIG. 2 is a schematic diagram of the main parts showing a method for controlling the liquid level in a tank according to an embodiment of the present invention. It is. A... Paper making machine, 1... Circular mesh cylinder, 2... Tank, 3... Rotating felt, 4... Cement slurry, 5... Air blowing pipe, 6... Differential pressure detection 7...Controller 8...Flow rate adjustment pipe, 9...Flow rate adjustment valve.
Claims (1)
ー吹出管によって生ずる大気圧との差圧を差圧検出器で
検出し、さらに該差圧検出器の信号をコントローラーに
送信し、流量調整パイプに取り付けられている流量調整
バルブを開閉してタンク内の液面を制御することを特徴
とするタンク内の液面制御方法。(1) Attach an air blowing pipe to the liquid in the tank, use a differential pressure detector to detect the pressure difference between atmospheric pressure and atmospheric pressure generated by the air blowing pipe, and send the signal from the differential pressure detector to the controller to determine the flow rate. A method for controlling the liquid level in a tank, which comprises controlling the liquid level in the tank by opening and closing a flow rate adjustment valve attached to an adjustment pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13561589A JPH03126A (en) | 1989-05-29 | 1989-05-29 | Controlling method for liquid surface in tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13561589A JPH03126A (en) | 1989-05-29 | 1989-05-29 | Controlling method for liquid surface in tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03126A true JPH03126A (en) | 1991-01-07 |
Family
ID=15155950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13561589A Pending JPH03126A (en) | 1989-05-29 | 1989-05-29 | Controlling method for liquid surface in tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03126A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020075495A (en) * | 2001-03-24 | 2002-10-05 | 위아 주식회사 | a gear with passage for lubrication |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52142102A (en) * | 1976-05-21 | 1977-11-26 | Hitachi Ltd | Load runback control system for air extracting back pressure turbine |
| JPS5646904A (en) * | 1979-09-26 | 1981-04-28 | Tokyo Shibaura Electric Co | Minimum flow controller for boilers |
-
1989
- 1989-05-29 JP JP13561589A patent/JPH03126A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52142102A (en) * | 1976-05-21 | 1977-11-26 | Hitachi Ltd | Load runback control system for air extracting back pressure turbine |
| JPS5646904A (en) * | 1979-09-26 | 1981-04-28 | Tokyo Shibaura Electric Co | Minimum flow controller for boilers |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020075495A (en) * | 2001-03-24 | 2002-10-05 | 위아 주식회사 | a gear with passage for lubrication |
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