JPS61568U - Control device for flow rate to fluid distribution device - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案による制御装置を示す略図、第２図は本
考案による制御装置を一部横断面で示す略図、第３図は
第２図に示す弁アクチュエータの拡大断面図、第４図は
流体配給装置静圧対時間のプロット、第５図はうず巻ポ
ンプの比較を示すプロット、第６図は弁の前後の圧力差
対時間のプロット、第７図は静圧対時間のプロット、第
８図は計算プロット、第９図は典型的な弁栓の絞り特性
のプロット、第１０図は弁開放の百分率対時間のプロッ
ト、第１１図は流体配給装置静圧対時間のプロットであ
る。 なお、図において、２０・・・・・・ポンプ、２２・・
・・・・流体配給装置、２４・・・・・・弁、４０・・
・・・・圧力差スイッチ、３０・・・・・・弁アクチュ
エータ、３５・・・・・・弁口、３８・・・・・・弁心
棒、３６・・・・・・弁栓、４６，４８， ５０， ５
２・・・・・・速度制御装置、４４・・・・・・水圧管
路、５４・・・・・・位置操作スイッチ、５６，５８，
６０・・・・・・スイッチ、２７・・・・・・弁アクチ
ュエータ制御装置、６５・・・・・・圧カスイッチ、６
４・・・・・・圧カスイッチである。Fig. 1 is a schematic diagram showing a control device according to the present invention, Fig. 2 is a schematic diagram showing a partial cross section of the control device according to the present invention, Fig. 3 is an enlarged sectional view of the valve actuator shown in Fig. 2, and Fig. 4 is a schematic diagram showing a control device according to the present invention. is a plot of fluid delivery system static pressure versus time; FIG. 5 is a plot showing a comparison of centrifugal pumps; FIG. 6 is a plot of pressure difference across the valve versus time; FIG. 7 is a plot of static pressure versus time; Figure 8 is a calculation plot; Figure 9 is a plot of the throttling characteristics of a typical valve stopper; Figure 10 is a plot of percentage valve opening versus time; and Figure 11 is a plot of fluid delivery device static pressure versus time. . In addition, in the figure, 20... pump, 22...
...Fluid distribution device, 24...Valve, 40...
...Pressure difference switch, 30...Valve actuator, 35...Valve port, 38...Valve stem, 36...Valve stopper, 46, 48, 50, 5
2... Speed control device, 44... Water pressure pipe, 54... Position operation switch, 56, 58,
60... Switch, 27... Valve actuator control device, 65... Pressure switch, 6
4...This is a pressure switch.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 弁の下流に位置している流体系統における流体の状態を
感知するための第１感知装置と；上記流体系統へ流体を
送るために上記弁の上流にあるポンプと；上記弁の上流
側および下流側における圧力を感知するための第２感知
装置と；上記感知状態が第１の予定値に低下したとき上
記ポンプを始動し、上記弁の上流の圧力が上記弁の下流
の圧力より少し低い圧力を示したとき上記弁の作動を始
み、上記弁の前後の圧力差がゼ川こなったとき流体が上
記弁を通って流れ始めるように上記弁を開けたままにし
ておき、第２の予定値まで上記感知圧力が増加したとき
上記弁を閉じ始め、上記弁の前後の圧力差が事実上ゼ川
こなったとき上記弁が流れを完全に止めるように上記ポ
ンプを停止し上記弁を閉じたままにしておくための制御
装置と；よりなる流量制御装置。a first sensing device for sensing the condition of a fluid in a fluid system located downstream of the valve; a pump upstream of the valve for delivering fluid to the fluid system; upstream and downstream of the valve; a second sensing device for sensing pressure at the side; starting the pump when the sensed condition drops to a first predetermined value, the pressure upstream of the valve being slightly lower than the pressure downstream of the valve; The valve is kept open so that when the pressure difference across the valve reaches zero, the fluid begins to flow through the valve, and the second valve is opened. When the sensed pressure increases to a predetermined value, the valve begins to close, and when the pressure difference across the valve becomes virtually zero, the pump is stopped and the valve is closed so that the valve completely stops the flow. a flow control device consisting of a control device for keeping it closed;