JPS6199693U

JPS6199693U -

Info

Publication number: JPS6199693U
Application number: JP18490284U
Authority: JP
Priority date: 1984-12-07
Filing date: 1984-12-07
Publication date: 1986-06-25

Description

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

第１図は給水装置のシステム構成図、第２図は
第１図の運転特性図、第３図は第１、第２図の制
御装置、第４図は第３図の改良前のタイムチヤー
ト、第５図は第３図の改良後のタイムチヤートで
ある。４―１，４―２はポンプ、８は給水管、９は圧
力タンク、１０は圧力センサー、ＩＮＶは可変周
波インバータ装置、ＭＣＯ，ＭＣＤ_１，ＭＣＤ_２，ＭＣＶ_１，ＭＣＶ_２は電磁開閉器、ＣＴＬは制
御回路である。 Figure 1 is a system configuration diagram of the water supply equipment, Figure 2 is an operating characteristic diagram of Figure 1, Figure 3 is the control device of Figures 1 and 2, and Figure 4 is a time chart before improvement of Figure 3. , FIG. 5 is a time chart after the improvement of FIG. 3. 4-1, 4-2 are pumps, 8 is a water supply pipe, 9 is a pressure tank, 10 is a pressure sensor, INV is a variable frequency inverter device, MCO, MCD ₁ , MCD ₂ , MCV ₁ , MCV ₂ are electromagnetic switches, and CTL is a control circuit.

Claims

【実用新案登録請求の範囲】[Scope of utility model registration request]

複数台のポンプと、このポンプの吐出し側給水
管と、この給水管に備わる圧力センサーと、これ
らのポンプの速度制御を行う可変周波インバータ
装置と、前記圧力センサーの信号を入力し、前記
インバータ装置へ速度指令信号を発するとともに
前記複数台のポンプの台数増減指令を発する制御
回路と、これらのポンプの電磁開閉器より成る給
水装置の制御装置において、ポンプ始動時はこの
ポンプの電磁開閉器を先に投入し、一定時間後に
インバータの出力を開始するとともに速度指令信
号を発し、ポンプ停止時はインバータの出力をし
や断し、速度指令信号をリセツトして一定時間後
にこのポンプの電磁開閉器をしや断するようにし
たことを特徴とする給水装置の制御装置。 A plurality of pumps, a water supply pipe on the discharge side of the pump, a pressure sensor provided in the water supply pipe, a variable frequency inverter device that controls the speed of these pumps, and a variable frequency inverter device that inputs the signal of the pressure sensor and operates the inverter. In a control device for a water supply system consisting of a control circuit that issues a speed command signal to the device and a command to increase or decrease the number of the plurality of pumps, and an electromagnetic switch for these pumps, when the pump is started, the electromagnetic switch of the pump is turned off. The pump is turned on first, and after a certain period of time, the inverter output starts and a speed command signal is issued. When the pump stops, the inverter output is cut off, the speed command signal is reset, and the electromagnetic switch of this pump is turned off after a certain period of time. A control device for a water supply device, characterized in that the water supply device is configured to shut off the water.