JPH039011U - - Google Patents
Info
- Publication number
- JPH039011U JPH039011U JP7060489U JP7060489U JPH039011U JP H039011 U JPH039011 U JP H039011U JP 7060489 U JP7060489 U JP 7060489U JP 7060489 U JP7060489 U JP 7060489U JP H039011 U JPH039011 U JP H039011U
- Authority
- JP
- Japan
- Prior art keywords
- controller
- speed
- pressure values
- controllers
- outputs
- 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
- 230000005540 biological transmission Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
Landscapes
- Flow Control (AREA)
Description
第１図は実施例を示す制御回路図、第２図はク
ツシヨン回路の特性曲線図、第３図はポンプ運転
による圧力変動曲線図、第４図はポンプ運転の並
列運転特性曲線図、第５図は回転速度制御による
運転点の変化を説明する曲線図、第６図は従来回
転速度及び台数制御回路図、第７図は同ポンプ運
転による圧力変動曲線図である。
１……流量計、２……流量発信器、３……設定
圧力演算器、４……圧力発信器、５……ＰＩＤ調
節計、６……速度制御器、７……ポンプ、１０…
…クツシヨン回路。
Fig. 1 is a control circuit diagram showing an embodiment, Fig. 2 is a characteristic curve diagram of the cushion circuit, Fig. 3 is a pressure fluctuation curve diagram due to pump operation, Fig. 4 is a parallel operation characteristic curve diagram of pump operation, and Fig. 5 The figure is a curve diagram explaining changes in the operating point due to rotational speed control, FIG. 6 is a conventional rotational speed and number control circuit diagram, and FIG. 7 is a pressure fluctuation curve diagram due to pump operation. 1...Flowmeter, 2...Flow rate transmitter, 3...Setting pressure calculator, 4...Pressure transmitter, 5...PID controller, 6...Speed controller, 7...Pump, 10...
...Cushion circuit.
Claims (1)
、この調節計出力を夫々受けてポンプ速度を制御
する速度制御器を備えた回転速度と台数制御とを
併用したものにおいて、 前記調節計と各速度制御器との間に夫々クツシ
ヨン回路を設け、急激な圧力変化を防止するよう
にしたことを特徴とする送配水設備の制御装置。[Scope of Claim for Utility Model Registration] Combined use of rotation speed and number control, which is equipped with a controller into which set pressure values and measured pressure values are input, and a speed controller that receives the outputs of these controllers and controls the pump speed. A control device for water transmission and distribution equipment, characterized in that a cushion circuit is provided between the controller and each speed controller to prevent sudden pressure changes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7060489U JPH039011U (en) | 1989-06-16 | 1989-06-16 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7060489U JPH039011U (en) | 1989-06-16 | 1989-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH039011U true JPH039011U (en) | 1991-01-29 |
Family
ID=31606897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7060489U Pending JPH039011U (en) | 1989-06-16 | 1989-06-16 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH039011U (en) |
-
1989
- 1989-06-16 JP JP7060489U patent/JPH039011U/ja active Pending
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