JPS60128982A - Pump operating method - Google Patents
Pump operating methodInfo
- Publication number
- JPS60128982A JPS60128982A JP23610483A JP23610483A JPS60128982A JP S60128982 A JPS60128982 A JP S60128982A JP 23610483 A JP23610483 A JP 23610483A JP 23610483 A JP23610483 A JP 23610483A JP S60128982 A JPS60128982 A JP S60128982A
- Authority
- JP
- Japan
- Prior art keywords
- speed pump
- pump
- water supply
- constant speed
- variable speed
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/02—Stopping, starting, unloading or idling control
- F04B49/025—Stopping, starting, unloading or idling control by means of floats
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明はポンプ運転方法に係ｒｌ、特に定速ポンプ及び
変速ポンプによって給水圧力を制御するポンプ運転方法
に関する、
〔発明の背景〕
第１図に従来の給水装置の概略が示さｎ、る、即ち、こ
の給水装置は、変速ポンプ１．定速ポンプ２、及び圧力
ダンク３．圧力スイッチ４によって構成ざｎ、、圧力ス
イッチ４にて設定された圧力に対して、変速ポンプ１．
及び定速ポンプ２によって給水圧力が制御さｎ、る。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a pump operating method, particularly to a pump operating method for controlling water supply pressure using a constant speed pump and a variable speed pump. [Background of the Invention] As shown in FIG. An outline of a conventional water supply device is shown. That is, this water supply device includes a variable speed pump 1. Constant speed pump 2, and pressure dunk 3. The variable speed pump 1. is configured by the pressure switch 4.
The water supply pressure is controlled by the constant speed pump 2 and the constant speed pump 2.
ｇ２図に、その運転パターンが示さｎ、る、需要端で水
が使用ｇｎ、ると、（ａ）に示す様に給水圧力が次第に
低下する。そして、それが設定圧力以下になると、その
旨か検知’６ｎ、、ポンプ始動指定装置によって変速ポ
ンプが始動制御される。変速ポンプは、必要速度＃Ｃ達
するまで即ち給水圧力がある値に違するまでに、加速時
間Δｔ（この加速時間Δｔはインバータに代表ｇｎ、る
電子制御装置を用いて変速する場合、電流容量を小さく
するための時間）を要する、このように従来構成のもの
は。The operation pattern is shown in Fig. g2. When water is used at the demand end, the water supply pressure gradually decreases as shown in (a). When the pressure becomes lower than the set pressure, the variable speed pump is started and controlled by the pump start designation device. The variable speed pump requires an acceleration time Δt (this acceleration time Δt is representative of the inverter) until it reaches the required speed #C, that is, until the water supply pressure changes to a certain value. Conventional configurations like this require time to make smaller.
ポンプ始動時にポンプからの給水量が使用水量１ｒ対し
間に合わないため給水圧力が設定置以下になるという欠
点があった。When the pump is started, the amount of water supplied from the pump is not enough for the amount of water used (1r), so there is a drawback that the water supply pressure falls below the set point.
従って２本発明の目的は、ポンプ始動時における給水圧
力の低下を防止したポンプ運転方法を提供することにあ
る。Therefore, two objects of the present invention are to provide a pump operating method that prevents a drop in water supply pressure when starting the pump.
而して１本発明は、圧力タンクの給水圧力を変速ポンプ
と定速ポンプで制御Ｔるポンプ運転方法において、ポン
プ始動時の給水圧力の低下を防止するために、始動時Ｉ
Ｃは変速ポンプと定速ポンプを並列的に駆動する様にし
、たちのである。そして変速ポンプの速度力叶分上昇し
、所定値に達したところで定速ポンプを停止させるもの
であるＯｆ発明り）実施列）
以下、図面を参照して本発明の一実施例についてａ明す
る、
Ｍ３図は、−実施列によるボ／ブ運転パターンを示す図
である。第４図はその制御回路図である、まず嬉４図に
おいて、１は変速ポンプ、２は定速ボｙｆ、ＭＣ，，Ｍ
Ｃ，，ＭＣ，はコン９４９−１５は速度制御装置Ｊ、Ｓ
、Ｔは電源である。Accordingly, 1 the present invention provides a pump operating method in which the water supply pressure of a pressure tank is controlled by a variable speed pump and a constant speed pump.
C is designed to drive the variable speed pump and constant speed pump in parallel. Then, the speed of the variable speed pump increases by a certain amount, and when it reaches a predetermined value, the constant speed pump is stopped. , M3 is a diagram showing a bob/bob driving pattern according to the - implementation row. Fig. 4 is its control circuit diagram. First, in Fig. 4, 1 is a variable speed pump, 2 is a constant speed pump, MC,, M
C,,MC,Con949-15 is speed control device J,S
, T is the power supply.
また、Ｐｒ、はポンプ始動指令装置、Ｐｒ、は並列運転
用ポンプ始動指令装置、Ｔ、はタイマーである。Further, Pr is a pump start command device, Pr is a pump start command device for parallel operation, and T is a timer.
ポンプが停止している状態にぢいて、末端で水が使用ざ
ｎ、ると、給水圧力が低下し、ついには設定圧力以下に
なる０すると、ポツプ始動指令装置Ｐｒ、及びＰｒ、に
より、コンタクタ−ＭＣ０。When the pump is stopped and water is no longer used at the end, the water supply pressure decreases and finally drops below the set pressure, and the pop start command device Pr and Pr start the contactor. -MC0.
ＭＣ，、、〜１Ｃ８がオンされ、変速ポンプ１．及び定
速ポンプ２が運転ざｎる。また、コンタクタ−ＭＣ，、
ＭＣ，がオンさ７１．ると、タイマーＴ、が計数動作を
始める。そして、このダイマーＴ１が一定時間２計時↑
小と、停止指令が発せられ、この指令によってコンタク
タ−ＭＣ１がオフさｎ、。MC,...~1C8 is turned on, and variable speed pump 1. And the constant speed pump 2 starts operating. Also, contactor-MC,,
MC, is on 71. Then, timer T starts counting operation. And this dimer T1 clocks for a certain period of time ↑
A stop command is issued, and this command turns off the contactor MC1.
定速ポツプ２が停止ざｎ、４）、 こθ１駆動ｌこついて窮３図を参照（、て説明Ｔる。Constant speed pop 2 stops, 4), Please refer to Figure 3 for explanation of this θ1 drive l.
ポンプ停止状態ｉｒおいて、末端で水が使用′：ｃわる
と、圧力タンク内に保有さｎ、でいる水が給水ざｎ小た
め、圧力タンクの給水圧力が］頃次低下し、ついには設
定圧力以下になる、丁小と、この時、変速ポンプ１及び
定速ポンプ２が同時に始動すｎ、る。When the water is used at the terminal when the pump is stopped, the water held in the pressure tank and the water supply rate is small, so the water supply pressure in the pressure tank gradually decreases, and eventually When the pressure drops below the set pressure, the variable speed pump 1 and constant speed pump 2 start at the same time.
従って、そｎ、以降は変速ポンプ１．！：定速ポンプ２
が並列運転ぎわ、＾０
定速ボッ′ブ２は、７ＩＯ速時間が非常に短時間である
ため、使用水量板上の給水を行わＣうｌこ際して、給水
圧を上昇させて圧力タノクに貯水ｆることが可能とさｒ
ｌ＾。変速ポンプ】の加速Ｉこ必要な一定の時間△ｔの
間、この定速ポンプ２の運転を続け。Therefore, from then on, variable speed pump 1. ! : Constant speed pump 2
When running in parallel, constant speed bob 2 has a very short 7IO speed time, so the water supply on the water usage plate is increased and the pressure is It is possible to store water in Tanok.
l^. The constant speed pump 2 continues to operate for the necessary constant time Δt.
そして停止させる。この時１ｒは、丁でＩＣ変速ポンプ
１の給水圧力は十分上昇してい小ので、定速ポンプ２の
運転を停止させｋとしても、給水不足ｌこよる圧力低下
を防止することができるｅ尚、この状態で使用水量が−
に増える亡、変速ポンプ１のみでは給水量が不足ｖ；ｂ
恐れも考えらｎるｋめ、定速ポンプ２を再び始動し、給
水能力を増加することもできる。and stop it. At this time, the water supply pressure of the IC variable speed pump 1 has risen sufficiently and is small, so even if the operation of the constant speed pump 2 is stopped, a pressure drop due to insufficient water supply can be prevented. , the amount of water used in this state is −
The amount of water supplied by variable speed pump 1 alone is insufficient.
In case of fear, the constant speed pump 2 can be restarted to increase the water supply capacity.
す上１本発明の一実施例についで説明したが、本発明は
ヒ記実施例で限定ざｎ、す１種々変形し、で実姉し得ろ
。列えｊム定速ポンプ２の停止制御をタイマーＴ−こよ
らず、変速ポンプの給水子方あ小イｉｔその速度を倹…
し、これｌこよって停止制御することも可能である。Although one embodiment of the present invention has been described below, the present invention is not limited to the embodiment described above, and may be modified in various ways. The stop control of the fixed-speed pump 2 is controlled by the timer T, but the speed of the water supply of the variable-speed pump is reduced.
However, it is also possible to perform stop control based on this.
以上説明し、た様に１本発明によｎ、ば、ポンプ始動時
に、変速ポツプ及び定速ポンプを並列的ｉｃ駆動する様
ｌζしたので、給水圧力の低下を防止丁小ことができる
ｅAs explained above, according to the present invention, since the variable speed pump and the constant speed pump are driven in parallel with IC when the pump is started, it is possible to prevent a drop in water supply pressure.
？ｇ１図は給水装置り１概略的構成を示す図、窟２図は
、従来のポンプ運転方法１ｒよ本運転パターンを示ｆ図
、厄３図は本発明の一実施例でよる運転パターンを示す
図、第４図は本発明の一実施例＃Ｃよるポンプの制御回
路図である〇
１・・・変速ポンプ、２・・・定速ポンプ。
３・・・圧力タンク、? Figure g1 shows the schematic configuration of the water supply system 1, Figure 2 shows the operating pattern according to the conventional pump operating method 1r, and Figure 3 shows the operating pattern according to an embodiment of the present invention. Figure 4 is a control circuit diagram of a pump according to embodiment #C of the present invention.〇1...variable speed pump, 2...constant speed pump. 3...pressure tank,
Claims (1)
丁＾ポンプ運輯方法において、給水圧力が所定以下にな
ったことを検知して、前記変速ポンプと定速ポンプを並
列的に駆動し、しかる後。 定速ポンプを停止せしめることを特徴とするポンプ運転
方法。[Claims] In a pump transport method in which the water supply pressure of a pressure tank is controlled by a variable speed pump and a constant speed pump, when it is detected that the water supply pressure has become below a predetermined value, the variable speed pump and the constant speed pump are controlled. Drive in parallel and then. A pump operating method characterized by stopping a constant speed pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23610483A JPS60128982A (en) | 1983-12-16 | 1983-12-16 | Pump operating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23610483A JPS60128982A (en) | 1983-12-16 | 1983-12-16 | Pump operating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60128982A true JPS60128982A (en) | 1985-07-10 |
Family
ID=16995788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23610483A Pending JPS60128982A (en) | 1983-12-16 | 1983-12-16 | Pump operating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60128982A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006161613A (en) * | 2004-12-03 | 2006-06-22 | Ebara Corp | Water-supplying device and starting method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS545183A (en) * | 1977-06-15 | 1979-01-16 | Hitachi Ltd | Pump number controller |
-
1983
- 1983-12-16 JP JP23610483A patent/JPS60128982A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS545183A (en) * | 1977-06-15 | 1979-01-16 | Hitachi Ltd | Pump number controller |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006161613A (en) * | 2004-12-03 | 2006-06-22 | Ebara Corp | Water-supplying device and starting method thereof |
| JP4694184B2 (en) * | 2004-12-03 | 2011-06-08 | 株式会社荏原製作所 | Water supply apparatus and starting method thereof |
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