JPS62162703U - - Google Patents
Info
- Publication number
- JPS62162703U JPS62162703U JP4966486U JP4966486U JPS62162703U JP S62162703 U JPS62162703 U JP S62162703U JP 4966486 U JP4966486 U JP 4966486U JP 4966486 U JP4966486 U JP 4966486U JP S62162703 U JPS62162703 U JP S62162703U
- Authority
- JP
- Japan
- Prior art keywords
- disconnection
- signal line
- control valve
- plant
- flow rate
- 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.)
- Granted
Links
- 239000012530 fluid Substances 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Safety Devices In Control Systems (AREA)
- Flow Control (AREA)
Description
第１図は本考案の流体制御系の断線保護装置の
一実施例を示す図、第２図は本考案のフローシー
トを示す図、第３図は従来例を示す図である。
図中、１は供給ライン、２は調節弁、３は発信
器、４は信号線、５はプログラム調節計、７ａは
保護プログラムである。
FIG. 1 is a diagram showing an embodiment of the disconnection protection device for a fluid control system according to the present invention, FIG. 2 is a diagram showing a flow sheet of the present invention, and FIG. 3 is a diagram showing a conventional example. In the figure, 1 is a supply line, 2 is a control valve, 3 is a transmitter, 4 is a signal line, 5 is a program controller, and 7a is a protection program.
Claims (1)
値で出力する発信器と、プラントなどへの供給流
体の流量などを調節する調節弁と、上記発信器に
信号線を介して接続され、信号線からの電流値を
演算処理すると共にその値に応じて上記調節弁の
開度を制御するプログラム調節計とを備えた流体
制御系において、上記プログラム調節計に、その
信号線の断線を検出判断し、断線時に上記調節弁
を、プラントなどの安全側に開度制御する保護プ
ログラムを設けたことを特徴とする流体制御系の
断線保護装置。 A transmitter that detects pressure or flow rate and outputs the detected value as a current value, a control valve that adjusts the flow rate of fluid supplied to a plant, etc., and is connected to the transmitter via a signal line, In a fluid control system comprising a program controller that calculates and processes a current value from a signal line and controls the opening of the control valve according to the value, the program controller detects a disconnection of the signal line. A disconnection protection device for a fluid control system, characterized in that a protection program is provided to detect a disconnection and control the opening of the control valve to a safe side for a plant or the like in the event of a disconnection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4966486U JPH074645Y2 (en) | 1986-04-04 | 1986-04-04 | Disconnection protection device for fluid control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4966486U JPH074645Y2 (en) | 1986-04-04 | 1986-04-04 | Disconnection protection device for fluid control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62162703U true JPS62162703U (en) | 1987-10-16 |
| JPH074645Y2 JPH074645Y2 (en) | 1995-02-01 |
Family
ID=30872324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4966486U Expired - Lifetime JPH074645Y2 (en) | 1986-04-04 | 1986-04-04 | Disconnection protection device for fluid control system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH074645Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02284201A (en) * | 1989-04-26 | 1990-11-21 | Mitsubishi Kasei Corp | Abnormal emergency shutdown action system for process |
-
1986
- 1986-04-04 JP JP4966486U patent/JPH074645Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02284201A (en) * | 1989-04-26 | 1990-11-21 | Mitsubishi Kasei Corp | Abnormal emergency shutdown action system for process |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH074645Y2 (en) | 1995-02-01 |