JP5914365B2 - Water supply equipment - Google Patents

Water supply equipment Download PDF

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JP5914365B2
JP5914365B2 JP2012553784A JP2012553784A JP5914365B2 JP 5914365 B2 JP5914365 B2 JP 5914365B2 JP 2012553784 A JP2012553784 A JP 2012553784A JP 2012553784 A JP2012553784 A JP 2012553784A JP 5914365 B2 JP5914365 B2 JP 5914365B2
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pump
control
curve
flow rate
rotational speed
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JPWO2012099242A1 (en
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小松　崇秀
崇秀 小松
亮太郎 唐木
亮太郎 唐木
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Ebara Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0066—Control, e.g. regulation, of pumps, pumping installations or systems by changing the speed, e.g. of the driving engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0088—Testing machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/30—Control parameters, e.g. input parameters
    • F05D2270/301—Pressure
    • F05D2270/3013—Outlet pressure

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  • 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)

Description

本発明は、ポンプを使用して、集合住宅やビルなどに水道水等の給水を行う給水装置に関する。   The present invention relates to a water supply device that supplies water such as tap water to an apartment house or a building using a pump.

集合住宅やビルなどに設置され、各給水端へ水を供給する装置として給水装置がある。図１は、このような給水装置の典型例を示すもので、給水装置は、モータＭをそれぞれ有し水を加圧して送水する２台のポンプ１と、各ポンプ１を駆動するためのモータＭに電力を供給するインバータ（周波数変換器）２を備えている。給水装置は、ポンプ１の吐出側に、圧力タンク３と吐出側圧力センサ４を備え、夫々のポンプ１毎にフロースイッチ（流量検出手段）６と逆止弁７を備えている。ポンプ１の吸込側配管８は、水道本管９に接続され、この吸込側配管８に吸込側圧力センサ１０と逆流防止装置１１とが設けられている。更に、水道本管９の圧力のみで給水を行うためのバイパス管１２がポンプ１の吸込側配管８と吐出側配管１３との間に設けられている。そして、バイパス管１２の途中には逆止弁１４が設けられている。ポンプ１の制御を行う制御部１５は、これらのセンサ類からの信号に基づき、状況に応じたポンプ１の回転数制御及び台数制御を行う。   A water supply device is installed in an apartment house or a building and supplies water to each water supply end. FIG. 1 shows a typical example of such a water supply apparatus. The water supply apparatus includes two pumps 1 each having a motor M for supplying water under pressure, and motors for driving the pumps 1. An inverter (frequency converter) 2 that supplies power to M is provided. The water supply device includes a pressure tank 3 and a discharge-side pressure sensor 4 on the discharge side of the pump 1, and a flow switch (flow rate detection means) 6 and a check valve 7 for each pump 1. A suction side pipe 8 of the pump 1 is connected to a water main pipe 9, and a suction side pressure sensor 10 and a backflow prevention device 11 are provided in the suction side pipe 8. Further, a bypass pipe 12 for supplying water only with the pressure of the water main pipe 9 is provided between the suction side pipe 8 and the discharge side pipe 13 of the pump 1. A check valve 14 is provided in the middle of the bypass pipe 12. The control unit 15 that controls the pump 1 performs rotation speed control and number control of the pump 1 according to the situation based on signals from these sensors.

なお、ポンプの吸込側配管が水道本管に接続された直結式給水装置ではなく、受水槽式の給水装置であれば、ポンプの吸込側配管は受水槽に接続され、受水槽に備えられた水位検知器が制御部に接続される。この受水槽式の給水装置の場合、逆流防止装置、吸込側圧力センサ、及びバイパス管は備えられていない。   In addition, if the suction side pipe of the pump is not a direct connection type water supply device connected to the water main, but a water receiving tank type water supply device, the pump suction side piping is connected to the water receiving tank and provided in the water receiving tank. A water level detector is connected to the controller. In the case of this water receiving tank type water supply device, a backflow prevention device, a suction side pressure sensor, and a bypass pipe are not provided.

図２は、給水装置における、使用流量と該流量に必要な揚程（ヘッド）との関係を示す必要揚程曲線Ａと、この必要揚程曲線Ａを基に設定した標準制御用揚程曲線Ｂとを、ポンプのＱ−Ｈ曲線（ポンプの回転速度Ｎ１，Ｎ２及びＮ３）と共に示す。図２において、横軸は流量Ｑを示し、縦軸は揚程（ヘッド）Ｈを示す。FIG. 2 shows a required lift curve A indicating the relationship between the flow rate used and the lift (head) required for the flow rate in the water supply device, and a standard control lift curve B set based on the required lift curve A. It is shown together with the QH curve of the pump (pump rotational speeds N 1 , N 2 and N 3 ). In FIG. 2, the horizontal axis indicates the flow rate Q, and the vertical axis indicates the head (head) H.

必要揚程曲線Ａは、例えば建物の揚程（最上階の高さ）Ｈ１、水道器具に必要な圧力（水道器具の圧損）Ｈ２、及び流量に依存する配管損失Ｈ３の合計（Ｈ１＋Ｈ２＋Ｈ３）から求められる。この例では、使用流量が０の時の揚程ＰＢ０と、同じく使用流量が最終点Ｑ０の時の揚程ＰＡ０とを滑らかに結ぶ曲線として示されている。The required head curve A is, for example, the sum of the head of the building (height of the top floor) H 1 , the pressure required for water equipment (pressure loss of the water equipment) H 2 , and the pipe loss H 3 depending on the flow rate (H 1 + H 2 + H 3 ). In this example, it is shown as a curve smoothly connecting the lift PB 0 when the use flow rate is 0 and the lift PA 0 when the use flow rate is the final point Q 0 .

この必要揚程曲線Ａは、あくまでも理想の揚程と使用流量との関係を求めたものであり、実際の設計に際しては、必要揚程曲線Ａに対し、例えば十数％程度の余裕を持たせた標準制御用揚程曲線Ｂを設定し、この標準制御用揚程曲線Ｂに基づいてポンプの回転速度を制御することが広く行われている。この標準制御用揚程曲線Ｂは、使用流量が０の時の前記揚程ＰＢ０に十数％程度の余裕を持たせた揚程（最低必要圧力）ＰＢ１と、使用流量が最終点Ｑ０の時の前記揚程ＰＡ０に十数％程度の余裕を持たせた揚程（最大必要圧力）ＰＡ１とを滑らかに結ぶ曲線として示されている。This required head curve A is merely the relationship between the ideal head and the flow rate used, and in actual design, for example, standard control with a margin of about a dozen percent with respect to the required head curve A. It has been widely practiced to set a lift head curve B and control the rotational speed of the pump based on the standard control lift curve B. This standard control lift curve B shows a lift (minimum required pressure) PB 1 that gives a margin of about 10% to the lift PB 0 when the use flow rate is 0, and when the use flow rate is the final point Q 0 . It is shown as a curve that smoothly connects the head (maximum required pressure) PA 1 with a margin of about 10% to the head PA 0 .

この標準制御用揚程曲線Ｂは、図１に示す給水装置の制御部１５の記憶部に記憶されており、この標準制御用揚程曲線Ｂに基づいて、つまり、例えば、図２に示すように、使用流量がＱ１の時、この流量Ｑ１と標準制御用揚程曲線Ｂとの交点Ｕ３がポンプ１の運転ポイント（回転速度Ｎ１）になるように、ポンプ１の回転速度が制御される。This standard control head curve B is stored in the storage unit of the control unit 15 of the water supply apparatus shown in FIG. 1, and based on this standard control head curve B, that is, for example, as shown in FIG. When the operating flow rate is Q 1, the rotational speed of the pump 1 is controlled so that the intersection point U 3 between the flow rate Q 1 and the standard control head curve B becomes the operating point (rotational speed N 1 ) of the pump 1. .

このように、必要揚程曲線Ａに対し、例えば十数％程度の余裕を持たせた標準制御用揚程曲線Ｂを設定し、この標準制御用揚程曲線Ｂに基づいてポンプの回転速度を制御することで、例えば配管に腐食が発生して配管損失が設計当初に比べて大きくなった場合に、給水装置がその使用性能を出せなくなってしまうことを防止したり、また使用者側で何らかの理由により、もう少し流量を出したいとの要求があった場合に、この要求に応じることができる。   Thus, for example, a standard control lift curve B having a margin of about 10% or more is set for the required lift curve A, and the rotational speed of the pump is controlled based on the standard control lift curve B. For example, when corrosion occurs in the pipe and the pipe loss becomes larger than the original design, the water supply device is prevented from failing to use its performance, or for some reason on the user side, If there is a request for more flow, this request can be met.

なお、配管抵抗とポンプ性能曲線とから求められる流量をインプットし、求めた流量が得られるようにポンプの回転速度を自動的に合わせてゆく方法が提案されている（特許文献１参照）。この方法は、最初に流量を測定した地点で、流量が多ければポンプの回転速度を自動的に下げ、ポンプの回転速度を下げても更に流量が多ければ、更にポンプの回転速度を流量に合うように自動的に下げ、順次目標とする流量になるまでポンプの回転速度を自動的に調整してゆくようにしている。   In addition, a method has been proposed in which a flow rate obtained from piping resistance and a pump performance curve is input and the rotational speed of the pump is automatically adjusted so as to obtain the obtained flow rate (see Patent Document 1). In this method, when the flow rate is first measured, if the flow rate is high, the pump rotation speed is automatically reduced. The pump speed is automatically adjusted until the target flow rate is reached.

特開昭５９−５１１９３号公報JP 59-51193 A

必要揚程曲線Ａの十数％程度の余裕をもった標準制御用揚程曲線Ｂを設定し、この標準制御用揚程曲線Ｂのみに基づいてポンプの回転速度を制御する場合、省エネルギー化を図ろうとしても、柔軟に対応できなかった。例えば、図２に示すように、標準制御用揚程曲線Ｂのみに基づいて、使用者の使用流量がＱ１となるように、ポンプの回転速度を制御しようとすると、図２の流量Ｑ１と標準制御用揚程曲線Ｂとの交点Ｕ３が運転ポイントとなるようにポンプの回転速度がＮ１に制御されるため、この運転ポイントを必要に応じて変更させることができない。When a standard control head curve B having a margin of about 10% or more of the required head curve A is set and the rotational speed of the pump is controlled based only on the standard control head curve B, an attempt is made to save energy. However, it was not flexible. For example, as shown in FIG. 2, only based on the standard control head curve B, as used flow rate of the user is Q 1, when you try to control the rotational speed of the pump, the flow rate to Q 1 2 Since the rotational speed of the pump is controlled to N 1 so that the intersection point U 3 with the standard control head curve B becomes the operating point, this operating point cannot be changed as necessary.

しかしながら、使用者の使用流量Ｑ１が確保されていれば、図２に示す、流量Ｑ１と必要揚程曲線Ａとの交点（回転速度Ｎ３）Ｕ１よりも揚程が高く、上記交点Ｕ３よりも揚程が低い、交点Ｕ２が運転ポイントとなるように、ポンプの回転速度をＮ２に制御してもよい場合がある。このような場合に、揚程の高い交点Ｕ３でポンプを運転すると、揚程の低い交点Ｕ２でポンプを運転する時に比べて、ポンプの回転速度は大きくなり、それだけ多くの電力を消費することになる。このことは、省エネルギーを厳しく求められる昨今のニーズに反する。However, if it is ensured using the flow rate to Q 1 user, shown in FIG. 2, the flow rate Q 1 the intersection of the required head curve A (the rotational speed N 3) higher lift than U 1, the intersection U 3 In some cases, the rotational speed of the pump may be controlled to N 2 so that the intersection point U 2 , which has a lower head than that, becomes the operating point. In this case, when operating the pump at a high point of intersection U 3 of pump head, as compared to when operating the pump at low intersection U 2 of pump head, the rotational speed of the pump is increased, to consume much more power Become. This is contrary to the recent needs for energy conservation.

また、使用者側では、十分な余裕を持った標準制御用揚程曲線に基づいてポンプの回転速度を制御する必要がない場合がある。このような場合には、必要最低限の余裕を持った制御用揚程曲線に基づいてポンプの回転速度を制御することで、省エネルギー化に貢献することができる。   On the user side, it may not be necessary to control the rotational speed of the pump based on the standard control head curve with sufficient margin. In such a case, it is possible to contribute to energy saving by controlling the rotational speed of the pump based on the control head curve having a minimum necessary margin.

しかし、特許文献１に記載の発明は、かかる省エネルギー化を意図したものではない。   However, the invention described in Patent Document 1 is not intended to save energy.

本発明は上記事情に鑑みてされたもので、一定の流量を確保したまま、ポンプの回転速度が低くなるように制御できるようにして、省エネルギー化の要請に応えることができるようにした給水装置を提供することを目的とする。   The present invention has been made in view of the above circumstances, and it is possible to control the pump so that the rotational speed of the pump becomes low while ensuring a constant flow rate, so that the water supply device can meet the demand for energy saving. The purpose is to provide.

請求項１に記載の発明は、水を加圧して送水するポンプと、前記ポンプに電力を供給して該ポンプを任意の回転速度で運転する周波数変換器と、前記ポンプの吐出側の圧力を検知する吐出側圧力センサと、前記ポンプの回転速度を制御する制御部とを備え、前記制御部には、流量と揚程の異なる関係を示す複数の制御用揚程曲線が記憶され、択一的に選択された制御用揚程曲線に基づいて前記ポンプの回転速度が制御され、前記制御部に記憶されている複数の制御用揚程曲線を順次切換える切換ボタンと、ポンプの回転速度の制御に使用される制御用揚程曲線に対応した省エネルギーの程度を示す省エネ表示部とを有する運転パネルを有することを特徴とする給水装置である。 The invention according to claim 1 is a pump that pressurizes and feeds water, a frequency converter that supplies electric power to the pump and operates the pump at an arbitrary rotational speed, and a pressure on a discharge side of the pump. A discharge-side pressure sensor to detect, and a control unit for controlling the rotation speed of the pump, wherein the control unit stores a plurality of control head curves indicating different relationships between the flow rate and the head, and alternatively The rotation speed of the pump is controlled based on the selected control head curve, and is used for controlling the rotation speed of the pump and a switching button for sequentially switching a plurality of control head curves stored in the control unit. a water supply device according to claim Rukoto to have a driving panel having an energy-saving display unit indicating the degree of energy conservation corresponding to the control head curve.

例えば第１制御用揚程曲線と、該第１制御用揚程曲線よりも圧力（揚程）を低く設定した第２制御用揚程曲線を制御部にそれぞれ記憶しておく。そして、通常は第１制御用揚程曲線に基づいてポンプの回転速度を制御し、必要に応じて、第２制御用揚程曲線に基づいてポンプの回転速度を制御することで、第１制御用揚程曲線のみに基づいてポンプの回転速度を制御した場合に比較して、使用水量を維持したままポンプの回転速度を落として省エネルギー化を図ることができる。   For example, a first control lift curve and a second control lift curve in which the pressure (lift) is set lower than the first control lift curve are stored in the control unit. Then, usually, the rotational speed of the pump is controlled based on the first control lift curve, and if necessary, the pump rotational speed is controlled based on the second control lift curve. Compared to the case where the rotational speed of the pump is controlled based only on the curve, it is possible to save energy by reducing the rotational speed of the pump while maintaining the amount of water used.

これにより、制御に使用される制御用揚程曲線の選択を使用者が切換ボタンを使用して簡便に行い、この選択された状態を省エネ表示部で確認することができる。   Thereby, the user can easily select the control head curve used for the control by using the switching button, and the selected state can be confirmed on the energy saving display unit.

請求項２に記載の発明は、水を加圧して送水するポンプと、前記ポンプに電力を供給して該ポンプを任意の回転速度で運転する周波数変換器と、前記ポンプの吐出側の圧力を検知する吐出側圧力センサと、前記ポンプの回転速度を制御する制御部とを備え、前記制御部には、流量と揚程の異なる関係を示す複数の制御用揚程曲線が記憶され、択一的に選択された制御用揚程曲線に基づいて前記ポンプの回転速度が制御され、前記複数の制御用揚程曲線は、標準制御用揚程曲線と、標準制御用揚程曲線に対して小流量側の揚程を低く設定した小流量域省エネ型制御用揚程曲線とを含むことを特徴とする給水装置である。 The invention according to claim 2 is a pump that pressurizes and feeds water, a frequency converter that supplies electric power to the pump and operates the pump at an arbitrary rotational speed, and a pressure on a discharge side of the pump. A discharge-side pressure sensor to detect, and a control unit for controlling the rotation speed of the pump, wherein the control unit stores a plurality of control head curves indicating different relationships between the flow rate and the head, and alternatively The rotational speed of the pump is controlled based on the selected control head curve, and the plurality of control head curves have a lower head on the small flow rate side than the standard control head curve and the standard control head curve. a water supply device you comprising the set and the small flow rate range energy-saving control head curve.

請求項３に記載の発明は、水を加圧して送水するポンプと、前記ポンプに電力を供給して該ポンプを任意の回転速度で運転する周波数変換器と、前記ポンプの吐出側の圧力を検知する吐出側圧力センサと、前記ポンプの回転速度を制御する制御部とを備え、前記制御部には、流量と揚程の異なる関係を示す複数の制御用揚程曲線が記憶され、択一的に選択された制御用揚程曲線に基づいて前記ポンプの回転速度が制御され、前記複数の制御用揚程曲線は、標準制御用揚程曲線と、標準制御用揚程曲線に対して中流量域の揚程を低く設定した中流量域省エネ型制御用揚程曲線とを含むことを特徴とする給水装置である。 The invention according to claim 3 is a pump that pressurizes and feeds water, a frequency converter that supplies electric power to the pump and operates the pump at an arbitrary rotational speed, and a pressure on a discharge side of the pump. A discharge-side pressure sensor to detect, and a control unit for controlling the rotation speed of the pump, wherein the control unit stores a plurality of control head curves indicating different relationships between the flow rate and the head, and alternatively The rotational speed of the pump is controlled based on the selected control head curve, and the plurality of control head curves have a lower head in the middle flow rate region than the standard control head curve and the standard control head curve. a water supply device you; and a flow rate range energy-saving control head curve in set.

請求項４に記載の発明は、水を加圧して送水するポンプと、前記ポンプに電力を供給して該ポンプを任意の回転速度で運転する周波数変換器と、前記ポンプの吐出側の圧力を検知する吐出側圧力センサと、前記ポンプの回転速度を制御する制御部とを備え、前記制御部には、流量と揚程の異なる関係を示す複数の制御用揚程曲線が記憶され、択一的に選択された制御用揚程曲線に基づいて前記ポンプの回転速度が制御され、前記複数の制御用揚程曲線は、標準制御用揚程曲線と、標準制御用揚程曲線に対して大流量域の揚程を低く設定した大流量域省エネ型制御用揚程曲線とを含むことを特徴とする給水装置である。 The invention according to claim 4 is a pump that pressurizes and feeds water, a frequency converter that supplies electric power to the pump and operates the pump at an arbitrary rotational speed, and a pressure on a discharge side of the pump. A discharge-side pressure sensor to detect, and a control unit for controlling the rotation speed of the pump, wherein the control unit stores a plurality of control head curves indicating different relationships between the flow rate and the head, and alternatively The rotational speed of the pump is controlled based on the selected control head curve, and the plurality of control head curves have a standard control head curve and a lower head in the large flow rate region than the standard control head curve. a water supply device you comprising the set a large flow rate range energy-saving control head curve.

請求項５に記載の発明は、水を加圧して送水するポンプと、前記ポンプに電力を供給して該ポンプを任意の回転速度で運転する周波数変換器と、前記ポンプの吐出側の圧力を検知する吐出側圧力センサと、前記ポンプの回転速度を制御する制御部とを備え、前記制御部には、流量と揚程の異なる関係を示す複数の制御用揚程曲線が記憶され、択一的に選択された制御用揚程曲線に基づいて前記ポンプの回転速度が制御され、前記複数の制御用揚程曲線は、標準制御用揚程曲線と、標準制御用揚程曲線に対して略並行に全流量域の揚程を低く設定した全流量域省エネ型制御用揚程曲線とを含むことを特徴とする給水装置である。 The invention according to claim 5 is a pump for pressurizing and feeding water, a frequency converter for supplying electric power to the pump and operating the pump at an arbitrary rotational speed, and a pressure on the discharge side of the pump. A discharge-side pressure sensor to detect, and a control unit for controlling the rotation speed of the pump, wherein the control unit stores a plurality of control head curves indicating different relationships between the flow rate and the head, and alternatively The rotational speed of the pump is controlled on the basis of the selected control head curve, and the plurality of control head curves have a total flow rate range substantially parallel to the standard control head curve and the standard control head curve. a water supply device you; and a total flow rate range energy-saving control head curve set the lift lower.

本発明の給水装置によれば、同じ使用水量であっても、必要に応じて、回転速度の低い運転ポイントを選んでポンプを運転することができ、これによって、給水時の使用電力を抑えて省エネルギー化を図り、ＣＯ２の削減に繋げることができる。According to the water supply device of the present invention, even if the amount of water used is the same, it is possible to operate the pump by selecting an operation point with a low rotation speed as necessary, thereby reducing the power used during water supply. It can save energy and lead to CO 2 reduction.

従来の給水装置の構成例を示す図である。It is a figure which shows the structural example of the conventional water supply apparatus. 給水装置における必要揚程曲線と従来の給水装置の標準制御用揚程曲線とを、ポンプのＱ−Ｈ曲線と共に示すグラフである。It is a graph which shows the required head curve in a water supply apparatus, and the standard control head curve of the conventional water supply apparatus with the QH curve of a pump. 本発明の実施形態の給水装置の構成例を示す図である。It is a figure which shows the structural example of the water supply apparatus of embodiment of this invention. 本発明の実施形態の給水装置の制御部に記憶されている複数の制御用揚程曲線を必要揚程曲線と共に示すグラフである。It is a graph which shows the some lift curve for control memorize | stored in the control part of the water supply apparatus of embodiment of this invention with a required lift curve. 本発明の実施形態の給水装置に備えられている運転パネルを示す平面図である。It is a top view which shows the operation panel with which the water supply apparatus of embodiment of this invention is equipped. 本発明の制御用揚程曲線として使用される全流量域省エネ型制御用揚程曲線を必要揚程曲線及び標準制御用揚程曲線と共に示すグラフである。It is a graph which shows the full-flow-rate energy-saving type control head curve used as a control head curve of this invention with a required head curve and a standard control head curve. 本発明の制御用揚程曲線として使用される中流量域省エネ型制御用揚程曲線を必要揚程曲線及び標準制御用揚程曲線と共に示すグラフである。It is a graph which shows the medium flow range energy saving type control head curve used as a control head curve of the present invention together with a required head curve and a standard control head curve. 本発明の制御用揚程曲線として使用される大流量域省エネ型制御用揚程曲線を必要揚程曲線及び標準制御用揚程曲線と共に示すグラフである。It is a graph which shows the high flow area energy saving type control head curve used as a control head curve of the present invention together with a required head curve and a standard control head curve. 本発明の制御用揚程曲線として使用される小流量域省エネ型制御用揚程曲線を必要揚程曲線及び標準制御用揚程曲線と共に示すグラフである。It is a graph which shows the small flow area energy saving type control head curve used as a control head curve of this invention with a required head curve and a standard control head curve. 給水装置を１日運転した時における給水量（流量）と時刻との関係を示すグラフである。It is a graph which shows the relationship between the amount of water supply (flow rate) at the time of operating a water supply apparatus for 1 day, and time.

以下、本発明の実施形態について、図３乃至図５を参照して詳細に説明する。なお、図１乃至図５において、同一または相当する要素には同一符号を付して重複した説明を省略する。   Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 3 to 5. 1 to 5, the same or corresponding elements are denoted by the same reference numerals, and redundant description is omitted.

図３は、本発明の実施形態の給水装置の構成例を示す図である。図３に示すように、給水装置の制御部１５は、設定部１６、記憶部１７、演算部１８、表示部１９及びＩ／Ｏ部２０を備えている。設定部１６及び表示部１９は、給水装置の運転パネル２１に備えられている。なお、制御部１５以外の構成は、図１に示す従来の給水装置の構成とほぼ同様である。   Drawing 3 is a figure showing the example of composition of the water supply equipment of the embodiment of the present invention. As shown in FIG. 3, the control unit 15 of the water supply apparatus includes a setting unit 16, a storage unit 17, a calculation unit 18, a display unit 19, and an I / O unit 20. The setting unit 16 and the display unit 19 are provided in the operation panel 21 of the water supply device. The configuration other than the control unit 15 is substantially the same as the configuration of the conventional water supply apparatus shown in FIG.

設定部１６は、外部操作により、流量と揚程の異なる関係を示す複数の制御用揚程曲線等の各種設定値を設定するのに使用される。設定部１６において設定された複数の制御用揚程曲線等の各種設定値は、記憶部１７に記憶される。例えば、使用流量が０のときの前記揚程（最低必要圧力）ＰＢ１、使用流量が最終点Ｑ０のときの前記揚程（最大必要圧力）ＰＡ１等が設定値として記憶部１７に入力されて記憶される。Ｉ／Ｏ部２０は、吐出側圧力センサ４の出力やフロースイッチ６の信号などの給水装置内に設置された各種センサからの信号を受け入れて演算部１８に送る。また、Ｉ／Ｏ部２０と各インバータ２は、ＲＳ４８５等の通信手段により互いに接続され、制御部１５からインバータ２へは、各種設定値や周波数指令値、発停信号（起動・停止信号）などの制御信号が送られ、インバータ２から制御部１５へは、実際の周波数値や電流値等の運転状況が逐次送られる。The setting unit 16 is used to set various setting values such as a plurality of control head curves indicating different relationships between the flow rate and the head by an external operation. Various set values such as a plurality of control head curves set in the setting unit 16 are stored in the storage unit 17. For example, the lift (minimum required pressure) PB 1 when the use flow rate is 0 , the lift (maximum required pressure) PA 1 when the use flow rate is the final point Q 0 , and the like are input to the storage unit 17 as set values. Remembered. The I / O unit 20 receives signals from various sensors installed in the water supply device, such as the output of the discharge side pressure sensor 4 and the signal of the flow switch 6, and sends them to the calculation unit 18. Further, the I / O unit 20 and each inverter 2 are connected to each other by communication means such as RS485, and various setting values, frequency command values, start / stop signals (start / stop signals), etc. from the control unit 15 to the inverter 2. The control signal is sent to the control unit 15 from the inverter 2 and the operation status such as the actual frequency value and current value is sequentially sent.

図４は、設定部１６を介して設定されて記憶部１７に記憶されている複数の制御用揚程曲線を示す。この例では、例えば建物の揚程（最上階の高さ）Ｈ１、水道器具に必要な圧力（水道器具の圧損）Ｈ２、及び流量に依存する配管損失Ｈ３の合計（Ｈ１＋Ｈ２＋Ｈ３）から求められる必要揚程曲線Ａに対し、例えば十数％程度の余裕を持たせた標準制御用揚程曲線Ｂの他に、３つの全流量域省エネ型制御用揚程曲線Ｃ１，Ｃ２，Ｃ３の合計４つの制御用揚程曲線が使用されている。FIG. 4 shows a plurality of control head curves set via the setting unit 16 and stored in the storage unit 17. In this example, for example, the sum (H 1 + H 2 + H) of the head of the building (the height of the top floor) H 1 , the pressure required for the water appliance (pressure loss of the water appliance) H 2 , and the pipe loss H 3 depending on the flow rate. 3 ) In addition to the standard control lift curve B having a margin of, for example, about a dozen percent with respect to the required lift curve A obtained from 3 ), three total flow rate energy-saving control lift curves C 1 , C 2 , a total of four control head curve of C 3 is used.

全流量域省エネ型制御用揚程曲線Ｃ１，Ｃ２，Ｃ３は、標準制御用揚程曲線Ｂに対して略並行に、全流量域に亘って揚程が低く設定され、かつ必要揚程曲線Ａよりも揚程が高く設定されている。そして、全流量域省エネ型制御用揚程曲線Ｃ１，Ｃ２，Ｃ３の順に、揚程が順に低くなるように設定されている。そして、この４つの制御用揚程曲線Ｂ，Ｃ１，Ｃ２，Ｃ３の内の一つが選択され、この選択された制御用揚程曲線Ｂ，Ｃ１，Ｃ２またはＣ３に基づいてポンプ１の回転速度が制御される。The lift curves C 1 , C 2 , and C 3 for the energy saving type control for the entire flow rate range are set substantially lower in parallel with the lift curve B for the standard control over the entire flow rate range, and from the necessary lift curve A The head is also set high. Then, in order of total flow range energy-saving control head curve C 1, C 2, C 3 , lift is set to turn lower. One of the four control lift curves B, C 1 , C 2 , C 3 is selected, and the pump 1 is based on the selected control lift curve B, C 1 , C 2 or C 3. The rotation speed is controlled.

図５は、給水装置に備えられている運転パネル２１の平面図を示す。図５に示すように、運転パネル２１には、記憶部１７に記憶されている４つの制御用揚程曲線Ｂ，Ｃ１，Ｃ２，Ｃ３を順次切換える切換ボタン２２と、ポンプ１の回転速度の制御に使用される制御用揚程曲線に対応した省エネルギーの程度を示す省エネ表示部２３とを有している。 FIG. 5 shows a plan view of the operation panel 21 provided in the water supply apparatus. As shown in FIG. 5, the operation panel 21 has a switching button 22 for sequentially switching the four control head curves B, C 1 , C 2 , C 3 stored in the storage unit 17, and the rotational speed of the pump 1. And an energy saving display unit 23 indicating the degree of energy saving corresponding to the control head curve used for the control.

これによって、切換ボタン２２を押さない場合は、省エネ表示部２３のランプが点灯することなく、標準制御用揚程曲線Ｂがポンプ１の回転速度の制御に使用される。そして、切換ボタン２２を１回押すと、省エネ表示部２３の“Ｌ”に対応するランプが点灯して、全流量域省エネ型制御用揚程曲線Ｃ１がポンプ１の回転速度の制御に使用される。切換ボタン２２を２回押すと、省エネ表示部２３の“Ｍ”に対応するランプが点灯して、全流量域省エネ型制御用揚程曲線Ｃ２がポンプ１の回転速度の制御に使用される。更に、切換ボタン２２を３回押すと、省エネ表示部２３の“Ｈ”に対応するランプが点灯して、全流量域省エネ型制御用揚程曲線Ｃ３がポンプ１の回転速度の制御に使用される。切換ボタン２２を４回押すと元の状態に復帰する。Thus, when the switch button 22 is not pressed, the standard control lift curve B is used for controlling the rotational speed of the pump 1 without the lamp of the energy saving display section 23 being lit. When the switch button 22 is pressed once, the lamp corresponding to “L” in the energy saving display section 23 is turned on, and the energy flow control curve C 1 for the entire flow rate region is used for controlling the rotational speed of the pump 1. The When the switching button 22 is pressed twice, the lamp corresponding to “M” in the energy saving display section 23 is turned on, and the entire flow rate energy saving type control head curve C 2 is used for controlling the rotational speed of the pump 1. Moreover, pressing the switch button 22 three times, the lamp is lit corresponding to the "H" of the energy-saving display unit 23, the total flow rate range energy-saving control head curve C 3 is used to control the rotational speed of the pump 1 The When the switching button 22 is pressed four times, the original state is restored.

これにより、制御に使用される制御用揚程曲線Ｂ，Ｃ１，Ｃ２またはＣ３の切換を使用者が切換ボタン２２を押して簡便に行い、この切換えた状態を省エネ表示部２３で確認することができる。Thereby, the user can easily switch the control head curve B, C 1 , C 2 or C 3 used for the control by pressing the switch button 22, and confirm this switching state on the energy saving display unit 23. Can do.

次に、この給水装置によって、使用者の使用流量がＱ１となるように、ポンプの回転速度を制御する場合について、図４を参照して説明する。先ず、切換ボタン２２を押さない場合、標準制御用揚程曲線Ｂに基づいて、ポンプ１の回転速度が制御され、標準制御用揚程曲線Ｂと流量がＱ１との交点Ｕ３がポンプ１の運転ポイントとなる。この時、省エネ表示部２３のランプは点灯されない。Next, the case where the rotational speed of the pump is controlled by this water supply device so that the usage flow rate of the user becomes Q 1 will be described with reference to FIG. First, when the switch button 22 is not pressed, the rotational speed of the pump 1 is controlled based on the standard control lift curve B, and the intersection U 3 between the standard control lift curve B and the flow rate Q 1 is the operation of the pump 1. It becomes a point. At this time, the lamp of the energy saving display unit 23 is not turned on.

使用者が切換ボタン２２を１回押すと、全流量域省エネ型制御用揚程曲線Ｃ１に基づいて、ポンプ１の回転速度が制御され、全流量域省エネ型制御用揚程曲線Ｃ１と流量Ｑ１との交点Ｕ４がポンプ１の運転ポイントとなる。この時、省エネ表示部２３の“Ｌ”に対応するランプが点灯する。切換ボタン２２を２回押すと、全流量域省エネ型制御用揚程曲線Ｃ２に基づいて、ポンプ１の回転速度が制御され、全流量域省エネ型制御用揚程曲線Ｃ２と流量Ｑ１との交点Ｕ５がポンプ１の運転ポイントとなる。この時、省エネ表示部２３の“Ｍ”に対応するランプが点灯する。そして、切換ボタン２２を３回押すと、全流量域省エネ型制御用揚程曲線Ｃ３に基づいて、ポンプ１の回転速度が制御され、全流量域省エネ型制御用揚程曲線Ｃ３と流量Ｑ１との交点Ｕ６がポンプ１の運転ポイントとなる。この時、省エネ表示部２３の“Ｈ”に対応するランプが点灯する。When the user presses the switch button 22 once, based on the total flow rate range energy-saving control head curve C 1, the rotational speed of the pump 1 is controlled, the total flow rate range energy-saving control head curve C 1 and the flow rate Q 1 intersection of the U 4 is operation point of the pump 1. At this time, the lamp corresponding to “L” in the energy saving display section 23 is turned on. Pressing the switch button 22 twice, the total flow area based on the energy-saving control head curve C 2, the rotational speed of the pump 1 is controlled, the total flow rate range energy-saving control head curve C 2 and the flow rate Q 1 The intersection point U 5 is an operation point of the pump 1. At this time, the lamp corresponding to “M” in the energy saving display section 23 is turned on. Then, press the switch button 22 three times, based on the total flow rate range energy-saving control head curve C 3, the rotational speed of the pump 1 is controlled, the total flow rate range energy-saving control head curve C 3 and the flow rate Q 1 intersection U 6 and is operation point of the pump 1. At this time, the lamp corresponding to “H” of the energy saving display section 23 is turned on.

このように、同じ使用流量であっても、必要に応じて、回転速度の低い運転ポイントを選んでポンプを運転できるようにすることで、給水時の使用電力を抑えて省エネルギー化を図り、ＣＯ２の削減に繋げることができる。In this way, even if the flow rate is the same, the pump can be operated by selecting an operation point with a low rotation speed as necessary, thereby reducing the power consumed during water supply and saving energy. 2 can be reduced.

上記の例では、図６に示すように、標準制御用揚程曲線Ｂに対して略並行に、全流量域に亘って揚程が低く設定され、かつ必要揚程曲線Ａよりも揚程が高く設定された全流量域省エネ型制御用揚程曲線Ｃを複数（この例では３つ）使用して、全流量域において、ほぼ一定の省エネルギーを図るようにした例を示している。   In the above example, as shown in FIG. 6, the head is set low over the entire flow rate range in parallel with the standard control head curve B, and the head is set higher than the required head curve A. An example is shown in which a plurality of (in this example, three) lift curves C for energy saving control in the entire flow rate region are used to achieve substantially constant energy saving in the entire flow rate region.

図７に示すように、標準制御用揚程曲線Ｂに対して中流量域の揚程を低く設定した中流量域省エネ型制御用揚程曲線Ｄを使用し、主に中流量域において省エネルギーを図るようにしてもよい。この場合、標準制御用揚程曲線Ｂと中流量域における揚程の差が異なる複数の中流量域省エネ型制御用揚程曲線Ｄを使用することで、段階的な省エネルギーを図るようにしてもよい。   As shown in FIG. 7, an intermediate flow rate energy-saving control lift curve D in which the lift in the medium flow rate range is set lower than the standard control lift curve B is used so as to save energy mainly in the medium flow rate range. May be. In this case, stepwise energy saving may be achieved by using a plurality of medium flow rate energy saving type control lift curves D having a difference in lift between the standard control lift curve B and the medium flow rate range.

また、図８に示すように、標準制御用揚程曲線Ｂに対して大流量域の揚程を低く設定した大流量域省エネ型制御用揚程曲線Ｅを使用し、主に大流量域において省エネルギーを図るようにしてもよい。この場合、標準制御用揚程曲線Ｂと大流量域における揚程の差が異なる複数の大流量域省エネ型制御用揚程曲線Ｅを使用することで、段階的な省エネルギーを図るようにしてもよい。   Further, as shown in FIG. 8, a large flow rate energy-saving control lift curve E in which the lift in the large flow rate region is set lower than the standard control lift curve B is used to save energy mainly in the large flow rate region. You may do it. In this case, stepwise energy saving may be achieved by using a plurality of large-flow-rate energy-saving control lift curves E in which the difference in lift between the standard control lift curve B and the large-flow region is different.

更に、図９に示すように、標準制御用揚程曲線Ｂに対して小流量域の揚程を低く設定した小流量域省エネ型制御用揚程曲線Ｆを使用し、主に小流量域において省エネルギーを図るようにしてもよい。この場合、標準制御用揚程曲線Ｂと小流量域おける揚程の差が異なる複数の小流量域省エネ型制御用揚程曲線Ｆを使用することで、段階的な省エネルギーを図るようにしてもよい。   Further, as shown in FIG. 9, the energy saving control head curve F is used mainly in the small flow rate region, by using the small flow rate energy saving type control head curve F in which the head in the small flow region is set lower than the standard control head curve B. You may do it. In this case, stepwise energy saving may be achieved by using a plurality of small-flow-rate energy-saving control lift curves F in which the difference between the standard control lift curve B and the lift in the small-flow region is different.

なお、図６に示す全流量域省エネ型制御用揚程曲線Ｃ、図７に示す中流量域省エネ型制御用揚程曲線Ｄ、図８に示す大流量域省エネ型制御用揚程曲線Ｅ、及び図９に示す小流量域省エネ型制御用揚程曲線Ｆを任意に組合せることで、省エネルギー効果を考慮しつつ、好みの流量、揚程となるように、ポンプの回転速度を制御するようにしてもよい。   Note that the total flow rate energy-saving control lift curve C shown in FIG. 6, the medium flow rate energy-saving control lift curve D shown in FIG. 7, the large flow rate energy-saving control lift curve E shown in FIG. The rotational speed of the pump may be controlled so as to obtain a desired flow rate and head while considering the energy saving effect by arbitrarily combining the small flow rate range energy-saving control head curve F shown in FIG.

次に、１時間毎の給水量（流量）を図１０に示す関係に維持したまま、揚程（給水圧力）を４０ｍから３６ｍに落として給水装置を一日運転した時における、揚程が３６ｍの場合の時刻、給水率、給水量及び消費電力（時間毎消費電力）の関係を表１に、揚程が４０ｍの場合の時刻、給水率、給水量及び消費電力（時間毎消費電力）の関係を表２にそれぞれ示す。   Next, when the head is 36 m when the water supply device is operated for one day with the head (water supply pressure) dropped from 40 m to 36 m while maintaining the water supply amount (flow rate) per hour as shown in FIG. Table 1 shows the relationship between time, water supply rate, water supply amount and power consumption (hourly power consumption), and table 1 shows the relationship between time, water supply rate, water supply amount and power consumption (power consumption per hour) when the head is 40 m 2 respectively.

Figure 0005914365
Figure 0005914365

Figure 0005914365
Figure 0005914365

この表１と表２から、揚程（給水圧力）を４０ｍら３６ｍに落として給水装置を一日運転できれば、消費電力の合計を１６．４１ｋＷｈから１３．９９ｋＷｈに低下させることができ、一日で２．４２ｋＷｈの省エネルギーとなることが判る。これを１年に換算すると、８８３ｋＷｈの省エネルギーとなる。この量をＣＯ２に換算すると３５８ｋｇ（東京電力推奨ＣＯ２変換係数：１ｋＷｈ＝０．４３ｋｇ）となる。杉１本のＣＯ２の吸収量は１４．５ｋｇ（杉の木１１０００本で年間１６０ｔのＣＯ２吸収量＝１４．５ｋｇ/本（植物鉄栄養研究会））であるので、杉約２５本分のＣＯ２削減となる。From Table 1 and Table 2, if the head (water supply pressure) is lowered from 40 m to 36 m and the water supply device can be operated for one day, the total power consumption can be reduced from 16.41 kWh to 13.99 kWh. It can be seen that the energy saving is 2.42 kWh. If this is converted into one year, it will save 883 kWh. When converting the amount CO 2 358Kg (Tokyo Electric recommended CO 2 conversion factor: 1 kWh = 0.43 kg) and made. The amount of CO 2 absorbed by one cedar is 14.5 kg (11,000 cedar trees and 160 t CO 2 absorbed per year = 14.5 kg / tree (plant iron nutrition study group)). CO 2 reduction.

なお、複数の制御用揚程曲線を使用して、揚程が低いと使用者が感じた時に、逆に揚程を上げるようにした制御用揚程曲線を選ぶようにしてもよい。つまり、上述の実施形態では、標準制御用揚程曲線Ｂ及びこの曲線Ｂの全部又は一部の流量域の揚程を低くした幾つかの制御用揚程曲線を制御部に記憶させて制御用揚程曲線を選択するようにしているが、標準制御用揚程曲線Ｂ及びこの曲線Ｂの全部又は一部の流量域の揚程を高くした幾つかの制御用揚程曲線を制御部に記憶させて制御用揚程曲線を選択するようにしてもよい。   A plurality of control lift curves may be used to select a control lift curve that raises the lift when the user feels that the lift is low. In other words, in the above-described embodiment, the control head curve is obtained by storing the standard control head curve B and several control head curves in which the heads of all or a part of the flow range of the curve B are lowered in the control unit. The control lift curve B and several control lift curves in which the lift in all or a part of the flow rate range of the curve B is increased are stored in the control unit, and the control lift curve is selected. You may make it select.

これまで本発明の一実施形態について説明したが、本発明は上述の実施形態に限定されず、その技術的思想の範囲内において種々異なる形態にて実施されてよいことはいうまでもない。また、本発明の給水装置は、ポンプの運転の電力使用量を低減するという省エネルギーを目的にして制御用揚程曲線の選択するようにしているが、本発明は、必ずしもかかる目的だけではなく、節水を目的として制御用揚程曲線を選択する給水装置にも適用できる。   Although one embodiment of the present invention has been described so far, it is needless to say that the present invention is not limited to the above-described embodiment, and may be implemented in various forms within the scope of the technical idea. In addition, the water supply apparatus of the present invention selects the control head curve for the purpose of energy saving to reduce the power consumption of the operation of the pump, but the present invention is not necessarily limited to this purpose. It is applicable also to the water supply apparatus which selects the head curve for control for the purpose.

本発明は、ポンプを使用して、集合住宅やビルなどに水道水等の給水を行う給水装置に適用可能である。   The present invention is applicable to a water supply device that supplies water such as tap water to an apartment house or a building using a pump.

１ ポンプ
２ インバータ（周波数変換器）
３ 圧力タンク
４ 吐出側圧力センサ
８ 吸込側配管
９ 水道本管
１０ 吸込側圧力センサ
１２ バイパス管
１３ 吐出側配管
１５ 制御部
１６ 設定部
１７ 記憶部
１８ 演算部
１９ 表示部
２０ Ｉ／Ｏ部
２１ 運転パネル
２２ 切換ボタン
２３ 省エネ表示部
Ａ 必要揚程曲線
Ｂ 標準制御用揚程曲線
Ｃ 全流量域省エネ型制御用揚程曲線
Ｄ 中流量域省エネ型制御用揚程曲線
Ｅ 大流量域省エネ型制御用揚程曲線
Ｆ 小流量域省エネ型制御用揚程曲線1 Pump 2 Inverter (frequency converter)
3 Pressure tank 4 Discharge side pressure sensor 8 Suction side pipe 9 Water main pipe 10 Suction side pressure sensor 12 Bypass pipe 13 Discharge side pipe 15 Control unit 16 Setting unit 17 Storage unit 18 Calculation unit 19 Display unit 20 I / O unit 21 Operation Panel 22 Change button 23 Energy saving display section A Required head curve B Standard control head curve C Total flow area energy-saving control head curve D Medium flow area energy-saving control head curve E Large flow area energy-saving control head curve F Small Lifting curve for energy saving control in flow rate range

Claims (5)

水を加圧して送水するポンプと、
前記ポンプに電力を供給して該ポンプを任意の回転速度で運転する周波数変換器と、
前記ポンプの吐出側の圧力を検知する吐出側圧力センサと、
前記ポンプの回転速度を制御する制御部とを備え、
前記制御部には、流量と揚程の異なる関係を示す複数の制御用揚程曲線が記憶され、択一的に選択された制御用揚程曲線に基づいて前記ポンプの回転速度が制御され、
前記制御部に記憶されている複数の制御用揚程曲線を順次切換える切換ボタンと、ポンプの回転速度の制御に使用される制御用揚程曲線に対応した省エネルギーの程度を示す省エネ表示部とを有する運転パネルを有することを特徴とする給水装置。 A pump that pressurizes and feeds water;
A frequency converter that supplies power to the pump to operate the pump at an arbitrary rotational speed;
A discharge-side pressure sensor for detecting the pressure on the discharge side of the pump;
A controller for controlling the rotational speed of the pump,
The control unit stores a plurality of control head curves indicating different relationships between the flow rate and the head, and the rotational speed of the pump is controlled based on an alternatively selected control head curve .
Operation having a switching button for sequentially switching a plurality of control head curves stored in the control unit, and an energy saving display unit indicating the degree of energy saving corresponding to the control head curve used for controlling the rotational speed of the pump panel water supply device according to claim Rukoto to have a. 水を加圧して送水するポンプと、
前記ポンプに電力を供給して該ポンプを任意の回転速度で運転する周波数変換器と、
前記ポンプの吐出側の圧力を検知する吐出側圧力センサと、
前記ポンプの回転速度を制御する制御部とを備え、
前記制御部には、流量と揚程の異なる関係を示す複数の制御用揚程曲線が記憶され、択一的に選択された制御用揚程曲線に基づいて前記ポンプの回転速度が制御され、
前記複数の制御用揚程曲線は、標準制御用揚程曲線と、標準制御用揚程曲線に対して小流量側の揚程を低く設定した小流量域省エネ型制御用揚程曲線とを含むことを特徴とする給水装置。 A pump that pressurizes and feeds water;
A frequency converter that supplies power to the pump to operate the pump at an arbitrary rotational speed;
A discharge-side pressure sensor for detecting the pressure on the discharge side of the pump;
A controller for controlling the rotational speed of the pump,
The control unit stores a plurality of control head curves indicating different relationships between the flow rate and the head, and the rotational speed of the pump is controlled based on an alternatively selected control head curve.
The plurality of control lift curves include a standard control lift curve and a small flow rate energy-saving control lift curve in which the lift on the small flow rate side is set lower than the standard control lift curve. water supply apparatus that. 水を加圧して送水するポンプと、
前記ポンプに電力を供給して該ポンプを任意の回転速度で運転する周波数変換器と、
前記ポンプの吐出側の圧力を検知する吐出側圧力センサと、
前記ポンプの回転速度を制御する制御部とを備え、
前記制御部には、流量と揚程の異なる関係を示す複数の制御用揚程曲線が記憶され、択一的に選択された制御用揚程曲線に基づいて前記ポンプの回転速度が制御され、
前記複数の制御用揚程曲線は、標準制御用揚程曲線と、標準制御用揚程曲線に対して中流量域の揚程を低く設定した中流量域省エネ型制御用揚程曲線とを含むことを特徴とする給水装置。 A pump that pressurizes and feeds water;
A frequency converter that supplies power to the pump to operate the pump at an arbitrary rotational speed;
A discharge-side pressure sensor for detecting the pressure on the discharge side of the pump;
A controller for controlling the rotational speed of the pump,
The control unit stores a plurality of control head curves indicating different relationships between the flow rate and the head, and the rotational speed of the pump is controlled based on an alternatively selected control head curve.
The plurality of control lift curves include a standard control lift curve and a medium flow rate energy-saving control lift curve in which the lift in the medium flow rate range is set lower than the standard control lift curve. water supply apparatus that. 水を加圧して送水するポンプと、
前記ポンプに電力を供給して該ポンプを任意の回転速度で運転する周波数変換器と、
前記ポンプの吐出側の圧力を検知する吐出側圧力センサと、
前記ポンプの回転速度を制御する制御部とを備え、
前記制御部には、流量と揚程の異なる関係を示す複数の制御用揚程曲線が記憶され、択一的に選択された制御用揚程曲線に基づいて前記ポンプの回転速度が制御され、
前記複数の制御用揚程曲線は、標準制御用揚程曲線と、標準制御用揚程曲線に対して大流量域の揚程を低く設定した大流量域省エネ型制御用揚程曲線とを含むことを特徴とする給水装置。 A pump that pressurizes and feeds water;
A frequency converter that supplies power to the pump to operate the pump at an arbitrary rotational speed;
A discharge-side pressure sensor for detecting the pressure on the discharge side of the pump;
A controller for controlling the rotational speed of the pump,
The control unit stores a plurality of control head curves indicating different relationships between the flow rate and the head, and the rotational speed of the pump is controlled based on an alternatively selected control head curve.
The plurality of control lift curves include a standard control lift curve and a large flow rate energy-saving control lift curve in which a high flow range lift is set lower than a standard control lift curve. water supply apparatus that. 水を加圧して送水するポンプと、
前記ポンプに電力を供給して該ポンプを任意の回転速度で運転する周波数変換器と、
前記ポンプの吐出側の圧力を検知する吐出側圧力センサと、
前記ポンプの回転速度を制御する制御部とを備え、
前記制御部には、流量と揚程の異なる関係を示す複数の制御用揚程曲線が記憶され、択一的に選択された制御用揚程曲線に基づいて前記ポンプの回転速度が制御され、
前記複数の制御用揚程曲線は、標準制御用揚程曲線と、標準制御用揚程曲線に対して略並行に全流量域の揚程を低く設定した全流量域省エネ型制御用揚程曲線とを含むことを特徴とする給水装置。 A pump that pressurizes and feeds water;
A frequency converter that supplies power to the pump to operate the pump at an arbitrary rotational speed;
A discharge-side pressure sensor for detecting the pressure on the discharge side of the pump;
A controller for controlling the rotational speed of the pump,
The control unit stores a plurality of control head curves indicating different relationships between the flow rate and the head, and the rotational speed of the pump is controlled based on an alternatively selected control head curve.
The plurality of control lift curves include a standard control lift curve and a total flow rate energy-saving control lift curve in which the lift in the entire flow rate range is set to be substantially parallel to the standard control lift curve. water supply device shall be the features.
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Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6170302B2 (en) * 2013-01-17 2017-07-26 株式会社荏原製作所 Fluid supply device
JP6133676B2 (en) * 2013-04-30 2017-05-24 株式会社荏原製作所 Pump device
CN105121858B (en) 2013-04-26 2017-03-08 株式会社荏原制作所 Pump installation
JP6133672B2 (en) * 2013-04-26 2017-05-24 株式会社荏原製作所 Pump device
CN103742425B (en) * 2014-01-22 2017-01-18 江苏双轮泵业机械制造有限公司 Energy conservation correcting method for water circulation system
EP2910788B1 (en) * 2014-02-25 2018-04-04 TACO ITALIA S.r.l. Method for controlling a pumping station within a fluid circulation system, related circulation system and pumping station for realizing said method
EP3156656B1 (en) * 2015-10-16 2020-03-25 Grundfos Holding A/S Pump control method and pressure increasing device
CN108825520A (en) * 2018-05-04 2018-11-16 四川省宜宾惠美线业有限责任公司 A kind of energy-efficient application method of centrifugal water pump
JP7081984B2 (en) * 2018-05-31 2022-06-07 株式会社荏原製作所 Control unit for controlling water supply equipment, and water supply equipment
JP7081985B2 (en) * 2018-05-31 2022-06-07 株式会社荏原製作所 Control unit for controlling water supply equipment, and water supply equipment
CN109059216B (en) * 2018-06-20 2020-08-04 广东美的暖通设备有限公司 Air conditioning system and control method and device of water pump of air conditioning system
EP3599037A1 (en) * 2018-07-25 2020-01-29 Primetals Technologies Germany GmbH Cooling section with adjustment of the cooling agent flow by means of pumping
DE102018217439A1 (en) * 2018-10-11 2020-04-16 Albert Ziegler Gmbh Pump device
KR102502146B1 (en) * 2021-05-31 2023-02-23 (주) 인정테크 Variable pressure control method of inverter booster pump

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000110769A (en) * 1998-10-02 2000-04-18 Toshiba Corp Speed control system for variable speed pump
JP2005351252A (en) * 2004-06-14 2005-12-22 Nikkiso Co Ltd Method for delivering liquid from multiple tanks and device for delivering liquid

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4370098A (en) * 1980-10-20 1983-01-25 Esco Manufacturing Company Method and apparatus for monitoring and controlling on line dynamic operating conditions
JPS5951193A (en) * 1982-09-20 1984-03-24 Hitachi Ltd Water supply system with variable speed pump
US5240380A (en) * 1991-05-21 1993-08-31 Sundstrand Corporation Variable speed control for centrifugal pumps
JP3922760B2 (en) * 1997-04-25 2007-05-30 株式会社荏原製作所 Fluid machinery
US6468042B2 (en) * 1999-07-12 2002-10-22 Danfoss Drives A/S Method for regulating a delivery variable of a pump
JP3768045B2 (en) * 1999-09-24 2006-04-19 株式会社日立産機システム Inverter
EP1286458A1 (en) * 2001-08-22 2003-02-26 Pumpenfabrik Ernst Vogel Gesellschaft m.b.H. Method and device to control a rotary power unit
JP3917835B2 (en) * 2001-09-28 2007-05-23 横河電機株式会社 Pressurized water pump system
DE60215293T2 (en) * 2002-01-17 2007-05-24 Hitachi, Ltd. Energy collector system and associated operating method
JP4393310B2 (en) * 2004-08-25 2010-01-06 株式会社日立製作所 Pump control device, pump control method, and pump control program
CN1774994A (en) * 2005-12-15 2006-05-24 西北农林科技大学 Sprinkling micro irrigation unit designing method based on variable frequency constant pressure coutrol
CN101556068A (en) * 2008-04-11 2009-10-14 上海瀚艺冷冻机械有限公司 Constant pressure frequency conversion energy-saving control method of recycle pump in central air-conditioning system
JP2010209698A (en) * 2009-03-06 2010-09-24 Toshiba Mitsubishi-Electric Industrial System Corp Energy saving control device for cooling facility pump
JP2011185190A (en) * 2010-03-10 2011-09-22 Ebara Corp Control device integrated type motor pump

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000110769A (en) * 1998-10-02 2000-04-18 Toshiba Corp Speed control system for variable speed pump
JP2005351252A (en) * 2004-06-14 2005-12-22 Nikkiso Co Ltd Method for delivering liquid from multiple tanks and device for delivering liquid

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