JP2008186266A - Operation controller for drainage pumping station - Google Patents

Operation controller for drainage pumping station Download PDF

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JP2008186266A
JP2008186266A JP2007019690A JP2007019690A JP2008186266A JP 2008186266 A JP2008186266 A JP 2008186266A JP 2007019690 A JP2007019690 A JP 2007019690A JP 2007019690 A JP2007019690 A JP 2007019690A JP 2008186266 A JP2008186266 A JP 2008186266A
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river
water level
tributary
water
sluice
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Hisakazu Takebayashi
久和 竹林
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Toshiba Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide the operation controller for a drainage pumping station which can optimally control the drainage from a tributary river to a main stream river, by appropriately controlling the operation of a sluice gate and a drainage pump during a typhoon, heavy rain, torrential downpour, or the like. <P>SOLUTION: In the operation controller for a drainage pumping station having a sluice gate 13 located in the confluence from a tributary river 12 to a main stream river 11 and a drainage pump 15 located in a sluice 14 which bypasses the sluice gate 13 from the tributary river 12, a water gauge 17 is arranged near the confluence from the tributary river 12 to the main stream river 11, and a flow direction meter 19 for detecting the flow direction of this tributary river is arranged in the tributary river. When a water level measured by the water gate 17 is lower than a set water level, a control circuit 21 controls the sluice gate 13 to an open state and the drain pump 15 to a stop state, and when a water level measured by the water gauge 17 is higher than the set value and a direction measured by the flow direction meter 19 is in a reverse flow state or a stop state, it controls the sluice gate 13 to a closed state and the drainage pump 15 to an operation state. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、支流河川から本流河川への合流点に設けられた水門、及び前記支流河川から前記水門をバイパスして本流河川に到る放水路に設けられた排水ポンプを有する排水機場の運転制御装置に関する。   The present invention relates to operation control of a drainage station having a sluice gate provided at a junction between a tributary river and a mainstream river, and a drainage pump provided in a water discharge channel that bypasses the sluice from the tributary river to the mainstream river. Relates to the device.

一般に、支流河川が本流河川に流れ込む合流地点には排水機場が設置されている。この排水機場には、支流河川から本流河川への合流点に水門が設けられると共に、支流河川から前記水門をバイパスして本流河川に到る放水路に排水ポンプを設けている。通常、支流河川の水は開状態の水門を介して自然流下で本流河川に流れ込んでいる。しかし、本流河川の上流域で集中豪雨があると本流河川の水位が上昇し、本流河川側の水が前記合流点から支流河川側に逆流する恐れがある。   In general, a drainage station is installed at a junction where a tributary river flows into a main river. In this drainage station, a sluice is provided at the junction between the tributary river and the main river, and a drainage pump is provided in a drainage channel that bypasses the sluice from the tributary river to the main river. Usually, the water of the tributary river flows into the main river under natural flow through the open sluice. However, if there is torrential rain in the upstream area of the main river, the water level of the main river rises, and the water on the main river may flow backward from the junction to the tributary river.

この逆流を防ぐために、本流河川の水位が上昇した場合は前述のように合流点に設けた水門を閉じ、支流河川の水を排水ポンプによって放水路から本流河川へ吐き出すようにしている。すなわち、支流河川と本流河川に水位計をそれぞれ設置し、これら水位計の計測値により、排水機場付近での支流河川および本流河川の今後の水位変化を予測し、その予測結果に基づいて排水機場のポンプの駆動タイミングのガイダンス表示を行うことが提案されている（例えば、特許文献１参照）。   In order to prevent this backflow, when the water level of the main river rises, the sluice provided at the junction is closed as described above, and the water of the tributary river is discharged from the discharge channel to the main river by the drainage pump. In other words, water level meters are installed in the tributary river and the main river, respectively, and the future water level changes in the tributary river and the main river near the drainage pump station are predicted based on the measured values of these water level gauges, and the drainage pump station is based on the prediction results. It has been proposed to display a guidance on the driving timing of the pump (for example, see Patent Document 1).

このほか、支流河川の水位と支流河川流域の降雨量および前記本流河川の水位と本流河川流域の降雨量をそれぞれ計測するとともに、各計測値に基づいて支流河川および本流河川の今後の水位を予測し、その予測結果に基づいて前記排水ポンプ場のポンプ駆動タイミングと前記水門の開閉タイミングを制御するものがある（例えば、特許文献２参照）。
特開平８−１００７７１号公報 特開平８−２８６７２９号公報 In addition, the water level in the tributary river and the rainfall in the tributary river basin and the water level in the main river and the rainfall in the main river basin are measured, respectively, and the future water level of the tributary river and the main river is predicted based on the measured values. And there exists what controls the pump drive timing of the said drainage pump station, and the opening-and-closing timing of the said sluice based on the prediction result (for example, refer to patent documents 2).
Japanese Patent Laid-Open No. 8-100771 JP-A-8-286729

上記前者の、本流河川と支流河川の水位値により水門の開閉と排水ポンプの運転制御を行う従来例では、本流河川と支流河川の水位値のみの判断で水門と排水ポンプの制御を行うため、次のような問題が生じる。すなわち、支流河川から本流河川へ自然流下が可能な場合であっても、判断の状況によっては、水門を閉じて排水ポンプによる排水に切換えることがある。また、排水ポンプによる排水の継続が必要な場合でも、判断の状況によっては、排水ポンプを停止させ水門による自然流下方式に切換える可能性がある。   In the former example, which controls the opening and closing of the sluice gate and the operation of the drainage pump according to the water level value of the main river and the tributary river, the sluice and the drainage pump are controlled only by judging the water level value of the main river and the tributary river. The following problems occur. That is, even if natural flow from a tributary river to a main river is possible, depending on the judgment situation, the sluice may be closed and switched to drainage by a drainage pump. Moreover, even if it is necessary to continue drainage with the drainage pump, depending on the situation of judgment, there is a possibility that the drainage pump is stopped and switched to the natural flow system with the water gate.

また、前記後者の、本流河川と支流河川の水位と流域の降雨量から今後の水位を予測し、その結果により水門の開閉と排水ポンプの運転制御を行う従来例では、予測制御の感度、及び通常制御への復帰感度の設定が難しく、また、長期使用時の環境条件変化への未対応による無駄な判断、または誤った判断を行う危険性がある。   In the latter example, the future water level is predicted from the water level of the main river and the tributary river and the rainfall in the river basin, and the result is that the opening and closing of the sluice and the operation control of the drainage pump are controlled. It is difficult to set the sensitivity to return to normal control, and there is a risk of making a useless or incorrect judgment due to the lack of response to changes in environmental conditions during long-term use.

本発明の目的は、台風、大雨、集中豪雨等、水門の開閉と排水ポンプの運転とを適切に制御することにより、支流河川から本流河川への排水を最適に制御できる排水機場の運転制御装置を提供することにある。   The purpose of the present invention is to control the operation of a drainage station that can optimally control drainage from a tributary river to a mainstream river by appropriately controlling the opening and closing of a sluice and the operation of a drainage pump, such as a typhoon, heavy rain, and heavy rain. Is to provide.

本発明による排水機場の運転制御装置は、支流河川から本流河川への合流点に設けられた水門、及び前記支流河川から前記水門をバイパスして本流河川に到る放水路に設けられた排水ポンプを有する排水機場の運転制御装置であって、前記本流河川の、前記支流河川との合流点近くに設置された水位計と、前記支流河川に設けられ、この支流河川の流れ方向を検出する流向計と、前記水位計の測定水位が設定水位より低い場合は、前記水門を開状態に、かつ前記排水ポンプを停止状態に制御し、前記水位計の測定水位が設定値より高く、前記流向計による測定方向が本流河川から支流河川に向かう方向か或いは停止状態の場合は、前記水門を閉状態に、かつ前記排水ポンプを運転状態に制御する制御回路とを備えたことを特徴とする。   An operation control device for a drainage station according to the present invention includes a sluice provided at a junction between a tributary river and a main river, and a drainage pump provided in a water discharge channel that bypasses the sluice from the tributary river to the main river. A water level meter installed near the junction of the main river and the tributary river, and a flow direction that is provided in the tributary river and detects the flow direction of the tributary river. And when the measured water level of the water level meter is lower than a set water level, the water gate is controlled to be open and the drainage pump is stopped, and the measured water level of the water level meter is higher than a set value, And a control circuit that controls the sluice to be closed and the drainage pump to be in an operating state when the measurement direction is from a main river to a tributary river or in a stopped state.

また、本発明では、前記本流河川の、前記支流河川との合流点近くに設置された水位計と、
前記支流河川に設けられ、この支流河川から本流河川の流れ込む水の流速を検出する流速計と、前記水位計の測定水位が設定水位より低い場合は、前記水門を開状態に、かつ前記排水ポンプを停止状態に制御し、前記水位計の測定水位が設定値より高く、前記流速計により測定された流速が設定値以下の場合は、前記水門を閉状態に、かつ前記排水ポンプを運転状態に制御する制御回路とを備えた構成でもよい。 Moreover, in the present invention, a water level meter installed near the confluence of the main river and the tributary river,
An anemometer that is provided in the tributary river and detects a flow velocity of water flowing into the main stream from the tributary river; and when the measured water level of the water level meter is lower than a set water level, the sluice is opened and the drainage pump When the water level measured by the water level meter is higher than a set value and the flow rate measured by the anemometer is less than the set value, the sluice is closed and the drainage pump is operated. A configuration including a control circuit for controlling may be used.

本発明によれば、水位計と共に流向計或いは流速計を用い、それらの検出結果に基づいて判断を行うので、水門の開閉と排水ポンプの運転とを最適に制御することができる。   According to the present invention, since a flow direction meter or an anemometer is used together with a water level meter and a determination is made based on the detection results, the opening and closing of the water gate and the operation of the drain pump can be optimally controlled.

以下、本発明による排水機場の運転制御装置の一実施の形態について、図面を用いて詳細に説明する。   Hereinafter, an embodiment of an operation control device for a drainage station according to the present invention will be described in detail with reference to the drawings.

図１は、この実施の形態の全体構成を表している。図１において、１１は大流量の本流河川、１２は比較的小流量の支流河川で、この支流河川１２は本流河川１１に合流し、本流河川１１に流れ込んでいる。この支流河川１２から本流河川１１への合流点には水門１３が設けられている。１４は放水路で、支流河川１２から分岐され水門１３をバイパスして本流水路１１に合流している。この放水路１４には排水ポンプ１５が設けられ、放水路１４を流れる水を本流河川１１に排水する。   FIG. 1 shows the overall configuration of this embodiment. In FIG. 1, reference numeral 11 denotes a main flow river with a large flow rate, and 12 denotes a tributary river with a relatively small flow rate. The tributary river 12 merges with the main river 11 and flows into the main river 11. A sluice 13 is provided at the junction from the tributary river 12 to the main river 11. Reference numeral 14 denotes a water discharge channel that branches off from the tributary river 12 and bypasses the water gate 13 and joins the main water channel 11. A drainage pump 15 is provided in the water discharge channel 14, and water flowing through the water discharge channel 14 is discharged into the main river 11.

前記本流河川１１の、支流河川１２との合流点近くには水位計１７が設置されている。また、支流河川１２内にも水位計１８が設置されている。さらに、この支流河川１２内には、この支流河川の流れ方向を検出する流向計１９が設けられている。   A water level gauge 17 is installed near the junction of the main river 11 and the tributary river 12. A water level gauge 18 is also installed in the tributary river 12. Furthermore, a flow meter 19 for detecting the flow direction of the tributary river is provided in the tributary river 12.

２１は制御回路で、水位計１７，１８の検出値を対応する水位検出器２２，２３を介して入力する。また、流向計１９の測定値も流向検出器２４を介して入力する。この制御回路２１は、前記水門１３に対して水門操作器２５を介して開閉操作信号を出力すると共に、排水ポンプ１５に対して、排水ポンプ操作器２６を介して運転信号を出力する。   Reference numeral 21 denotes a control circuit for inputting the detected values of the water level gauges 17 and 18 through the corresponding water level detectors 22 and 23. The measured value of the flow direction meter 19 is also input via the flow direction detector 24. The control circuit 21 outputs an opening / closing operation signal to the sluice 13 via the sluice operator 25, and outputs an operation signal to the drainage pump 15 via the drainage pump operator 26.

次に、図２を用いて動作説明を行う。制御回路２１の動作がスタートすると、平常時、すなわち水位計１７，１８の水位レベルが設定値以下であれば、水門１３は開き（ステップ２０１）、放水路１４に設けられた排水ポンプ１５は停止している（ステップ２０２）。このとき、支流河川１２の水は水門１３から自然流下で本流河川１１に排水される。   Next, the operation will be described with reference to FIG. When the operation of the control circuit 21 is started, the sluice gate 13 opens (step 201) and the drainage pump 15 provided in the discharge channel 14 stops in normal times, that is, when the water level of the water level gauges 17 and 18 is equal to or lower than the set value. (Step 202). At this time, the water of the tributary river 12 is drained from the sluice 13 into the main river 11 under natural flow.

これに対し、台風や大雨、集中豪雨などの発生時は、本流河川１１及び支流河川１２では共に水位が上昇し、流量が増加する。この場合、支流河川１２は本流河川１１に比べ容量が小さいため、支流河川１２から本流河川１１に対する自然流下による排水ができずに、本流河川１１から支流河川への逆流が生じることとなる。すなわち、支流河川１２から自然流下で本流河川１１に排水されていた水の流速は、本流河川１１の水位が高まるに連れて遅くなり、流速が一旦ゼロとなったのち、逆流状態となる。このような場合、上述した逆流を防止し、支流河川１２に流れる水を本流河川１１に確実に排水する必要がある。   On the other hand, when a typhoon, heavy rain, torrential rain, etc. occurs, the water level rises in the main river 11 and the tributary river 12, and the flow rate increases. In this case, since the tributary river 12 has a smaller capacity than the main river 11, drainage due to natural flow from the tributary river 12 to the main river 11 cannot be performed, and a reverse flow from the main river 11 to the tributary river occurs. That is, the flow velocity of water drained from the tributary river 12 to the main river 11 under natural flow becomes slower as the water level of the main river 11 increases, and once the flow velocity becomes zero, the flow becomes a reverse flow state. In such a case, it is necessary to prevent the above-described backflow and reliably drain the water flowing in the tributary river 12 into the mainstream river 11.

このような現象は、本流河川１１に設けた水位計１７、支流河川１２に設けた水位計１８、及び流向計１９により検出され、対応する水位検出器２２，２３及び流向検出器２４を介して制御回路２１に入力されている。   Such a phenomenon is detected by the water level meter 17 provided in the main river 11, the water level meter 18 provided in the tributary river 12, and the flow direction meter 19, and via the corresponding water level detectors 22 and 23 and the flow direction detector 24. It is input to the control circuit 21.

制御回路２１は、水位計１７により検出された本流河川１１の水位、及び水位計１８で検出された支流河川１２の水位がいずれも設定値より高く（ステップ２０３：Ｙ、ステップ２０４：Ｙ）、支流河川１２に設けた流向計１９が逆流状態（本流河川１１から支流河川１２に向う方向）を検出するか、または流れが停止した状態を検出した場合（ステップ２０５）、水門操作器２５を介して水門１３に閉指令を出力する（ステップ２０６）と共に、排水ポンプ操作器２４を介して排水ポンプ１５に運転指令を出力する（ステップ２０７）。   In the control circuit 21, the water level of the main river 11 detected by the water level meter 17 and the water level of the tributary river 12 detected by the water level meter 18 are both higher than the set values (step 203: Y, step 204: Y), When the flow direction meter 19 provided in the tributary river 12 detects a reverse flow state (direction from the main river 11 to the tributary river 12) or detects a state where the flow has stopped (step 205), the flow meter 19 Then, a close command is output to the water gate 13 (step 206), and an operation command is output to the drain pump 15 via the drain pump operating device 24 (step 207).

これらの操作により、水門１３が閉じられ、本流河川１１から支流河川１２への逆流が阻止される。また、排水ポンプ１５が運転されることにより、支流河川１２の水は放水路１５から本流河川１１へ強制排水される。   By these operations, the sluice 13 is closed and the backflow from the main river 11 to the tributary river 12 is prevented. Further, when the drainage pump 15 is operated, the water of the tributary river 12 is forcibly drained from the discharge channel 15 to the mainstream river 11.

台風や大雨、集中豪雨などが収まると、本流河川１１及び支流河川１２の水位は共に低下し、平常状態に復帰する。このような状態変化も、本流河川１１に設けた水位計１７、及び支流河川１２に設けた水位計１８により検出され、対応する水位検出器２２，２３を介して制御回路２１に入力されている。   When a typhoon, heavy rain, or heavy rain falls, the water levels of the mainstream river 11 and the tributary river 12 both fall and return to a normal state. Such a change in state is also detected by a water level meter 17 provided in the main river 11 and a water level meter 18 provided in the tributary river 12 and is input to the control circuit 21 via the corresponding water level detectors 22 and 23. .

制御回路２１は、水位計１７により検出された本流河川１１の水位、及び水位計１８で検出された支流河川１２の水位がいずれも設定値より低くなると（ステップ２０８：Ｙ、ステップ２０９：Ｙ）、平常状態に復帰したと判断する。そして、水門操作器２５を介して水門１３に開指令を出力し、排水ポンプ操作器２６を介して排水ポンプ１５に停止指令を出力する。この結果、水門１３は開状態となり（ステップ２０１）、排水ポンプ１５は停止状態となる（ステップ２０２）。この後は、再び支流河川１２の水は水門１３から自然流下で本流河川１１に排水される。   When the water level of the main river 11 detected by the water level gauge 17 and the water level of the tributary river 12 detected by the water level gauge 18 are both lower than the set value, the control circuit 21 (step 208: Y, step 209: Y). It is determined that the normal state has been restored. Then, an opening command is output to the sluice 13 via the sluice operator 25, and a stop command is output to the drain pump 15 via the drain pump operator 26. As a result, the water gate 13 is opened (step 201), and the drainage pump 15 is stopped (step 202). Thereafter, the water of the tributary river 12 is drained from the sluice 13 to the main river 11 under natural flow.

すなわち、制御回路２１は、水位計１７，１８の測定水位が設定水位より低い場合は、水門１３を開状態に、かつ排水ポンプ１５を停止状態に制御する。また、水位計１７，１８の測定水位が設定値より高く、流向計１９による測定方向が、本流河川１１から支流河川１２に向かう逆流方向か或いは停止状態の場合は、水門１３を閉状態に、かつ排水ポンプ１５を運転状態に制御する。これらの結果、本流河川１１の水位上昇に伴う支流河川１２への逆流を水門１３の閉鎖により防止しつつ、支流河川１２の水をポンプ１５により放流路１４から本流河川１１に強制排水することができる。   That is, the control circuit 21 controls the water gate 13 to the open state and the drainage pump 15 to the stop state when the measured water level of the water level gauges 17 and 18 is lower than the set water level. In addition, when the measured water level of the water level gauges 17 and 18 is higher than the set value and the measurement direction by the flow direction meter 19 is the reverse flow direction from the main river 11 to the tributary river 12 or is stopped, the water gate 13 is closed. And the drainage pump 15 is controlled to an operation state. As a result, the water in the tributary river 12 can be forcibly drained from the discharge channel 14 to the main river 11 by the pump 15 while preventing the reverse flow to the tributary river 12 due to the rise in the water level of the main river 11 by closing the sluice 13. it can.

次に、図３及び図４で示す実施の形態を説明する。図３は、この実施の形態の全体構成を表している。図３において、この実施の形態においても、支流河川１２は本流河川１１に合流し、本流河川１１に流れ込んでいる。この支流河川１２から本流河川１１への合流点には水門１３が設けられている。また、放水路１４には排水ポンプ１５が設けられており、放水路１４を流れる水を本流河川１１に排水することができる。   Next, the embodiment shown in FIGS. 3 and 4 will be described. FIG. 3 shows the overall configuration of this embodiment. In FIG. 3, also in this embodiment, the tributary river 12 merges with the main river 11 and flows into the main river 11. A sluice 13 is provided at the junction from the tributary river 12 to the main river 11. Further, the drainage channel 14 is provided with a drainage pump 15, and the water flowing through the drainage channel 14 can be drained into the main river 11.

前記本流河川１１には水位計１７が、支流河川１２内にも水位計１８が設置されている。これらの検出値は、水位検出器２２，２３を介して制御回路３１に入力される。また、支流河川１２内には流向計１９が設けられている。この流向計１９の測定値も流向検出器２４を介して制御回路３１に入力される。制御回路３１は、前記水門１３に対して水門操作器２５を介して開閉操作信号を出力すると共に、排水ポンプ１５に対して、排水ポンプ操作器２６を介して運転信号を出力する。   A water level meter 17 is installed in the main river 11 and a water level meter 18 is installed in the tributary river 12. These detection values are input to the control circuit 31 via the water level detectors 22 and 23. A flow meter 19 is provided in the tributary river 12. The measured value of the flow direction meter 19 is also input to the control circuit 31 via the flow direction detector 24. The control circuit 31 outputs an opening / closing operation signal to the sluice 13 via the sluice operator 25 and outputs an operation signal to the drainage pump 15 via the drainage pump operator 26.

ここまでの構成は、前述した実施の形態と同じであるが、この実施の形態では支流河川１２に、さらに流速計３２を設け、その検出値を、流速検出器３３を介して制御回路３１に入力させている。   The configuration up to this point is the same as that of the above-described embodiment, but in this embodiment, a velocimeter 32 is further provided in the tributary river 12, and the detected value is sent to the control circuit 31 via the flow velocity detector 33. You are inputting.

次に、図４を用いて動作説明を行う。制御回路３１の動作がスタートすると、平常時、すなわち、水位計１７，１８の水位レベルが設定値以下であれば、水門１３は開き（ステップ２０１）、放水路１４に設けられた排水ポンプ１５は停止している（ステップ２０２）。このとき、支流河川１２の水は水門１３から自然流下で本流河川１１に排水される。   Next, the operation will be described with reference to FIG. When the operation of the control circuit 31 is started, when the water level level of the water level gauges 17 and 18 is equal to or lower than the set value, the water gate 13 is opened (step 201), and the drain pump 15 provided in the water discharge channel 14 is Stopped (step 202). At this time, the water of the tributary river 12 is drained from the sluice 13 into the main river 11 under natural flow.

これに対し、台風や大雨、集中豪雨などの発生時は、本流河川１１及び支流河川１２では共に水位が上昇し、流量が増加し、本流河川１１から支流河川への逆流が生じることとなる。すなわち、支流河川１２から自然流下で本流河川１１に排水されていた水の流速は、本流河川１１の水位が高まるに連れて遅くなり、流速が一旦ゼロとなったのち、逆流状態となる。このような場合、上述した逆流を防止し、支流河川１２に流れる水を本流河川１１に確実に排水する必要がある。   On the other hand, when a typhoon, heavy rain, concentrated torrential rain, etc. occurs, the water level rises in the main river 11 and the tributary river 12, the flow rate increases, and a reverse flow from the main river 11 to the tributary river occurs. That is, the flow velocity of water drained from the tributary river 12 to the main river 11 under natural flow becomes slower as the water level of the main river 11 increases, and once the flow velocity becomes zero, the flow becomes a reverse flow state. In such a case, it is necessary to prevent the above-described backflow and reliably drain the water flowing in the tributary river 12 into the mainstream river 11.

制御回路３１は、水位計１７により検出された本流河川１１の水位、及び水位計１８で検出された支流河川１２の水位がいずれも設定値より高く（ステップ２０３：Ｙ、ステップ２０４：Ｙ）、支流河川１２に設けた流向計１９が逆流状態（本流河川１１から支流河川１２に向う方向）を検出するか、または流れが停止した状態を検出した場合（ステップ２０５）、水門操作器２５を介して水門１３に閉指令を出力する（ステップ２０６）と共に、排水ポンプ操作器２４を介して排水ポンプ１５に運転指令を出力する（ステップ２０７）。   In the control circuit 31, the water level of the main river 11 detected by the water level gauge 17 and the water level of the tributary river 12 detected by the water level gauge 18 are both higher than the set values (step 203: Y, step 204: Y), When the flow direction meter 19 provided in the tributary river 12 detects a reverse flow state (direction from the main river 11 to the tributary river 12) or detects a state where the flow has stopped (step 205), the flow meter 19 Then, a close command is output to the water gate 13 (step 206), and an operation command is output to the drain pump 15 via the drain pump operating device 24 (step 207).

つまり、水門１３を閉じ、排水ポンプ１５を運転することにより、本流河川１１から支流河川１２への逆流を阻止すると共に、支流河川１２の水を放水路１５から本流河川１１へ強制排水しようとする。   That is, by closing the sluice 13 and operating the drain pump 15, the reverse flow from the main river 11 to the tributary river 12 is prevented, and the water of the tributary river 12 is forced to drain from the discharge channel 15 to the main river 11. .

この場合、水門１３の閉動作時間が長いと、水門１３の閉鎖が間に合わず、大きな逆流が生じてしまう危険性が増加する。このような危険性をなくすため、この実施の形態では、流速計３２により、支流河川１２から本流河川１１に排水される水の流速を検出し、その検出値を、流速検出器３３を介して制御回路３１に入力している。   In this case, if the closing operation time of the sluice gate 13 is long, the sluice gate 13 cannot be closed in time and there is an increased risk that a large backflow will occur. In order to eliminate such danger, in this embodiment, the flow velocity of the water drained from the tributary river 12 to the main river 11 is detected by the velocimeter 32, and the detected value is transmitted via the flow velocity detector 33. Input to the control circuit 31.

制御回路３１は、この流速計３２の値が設定値以下になった場合は、水門１３を閉じ、排水ポンプ１５を運転状態に制御する（ステップ４０１，２０６，２０７）。すなわち、本流河川１１の水位が上昇すると、支流河川１２から本流河川１１に排水される水の流速が低下し始める。この実施の形態では、この時点を捉え、流速が低下した段階で、水門１３の閉制御を開始する。このため、水門１３の閉動作時間が長くても、支流河川１２における逆流や水流停止状態が生じる時点では既に水門が閉鎖されていることになるので、大きな逆流が生じることはない。そして、排水ポンプ１５の運転により、支流河川１２の水を、放水路１４から本流河川１１へ強制排水する。   The control circuit 31 closes the water gate 13 and controls the drainage pump 15 to the operating state when the value of the current meter 32 becomes equal to or less than the set value (steps 401, 206, and 207). That is, when the water level of the main river 11 rises, the flow rate of water drained from the tributary river 12 to the main river 11 starts to decrease. In this embodiment, this point is caught, and the closing control of the sluice 13 is started when the flow velocity is lowered. For this reason, even if the closing operation time of the sluice 13 is long, the sluice is already closed at the time when the backflow in the tributary river 12 and the water flow stop state occur, so that a large backflow does not occur. Then, the water of the tributary river 12 is forcibly drained from the discharge channel 14 to the main river 11 by the operation of the drain pump 15.

この場合、ステップ２０５の機能、すなわち、逆流状態検出、または流れの停止検出により水門１３に閉指令を出力したり、排水ポンプ１５に運転指令を出力する機能はバックアップとして用いられることになるので、省略してもよい。   In this case, the function of step 205, that is, the function of outputting a close command to the sluice 13 by detecting the backflow state or detecting the stop of the flow or outputting the operation command to the drainage pump 15 is used as a backup. It may be omitted.

台風や大雨、集中豪雨などが収まると、本流河川１１及び支流河川１２の水位は共に低下し、平常状態に復帰する。制御回路３１は、水位計１７により検出された本流河川１１の水位、及び水位計１８で検出された支流河川１２の水位がいずれも設定値より低くなると（ステップ２０８：Ｙ、ステップ２０９：Ｙ）、平常状態に復帰したと判断し、水門操作器２５を介して水門１３に開指令を出力し、排水ポンプ１５に停止指令を出力する。この結果、水門１３は開状態となり（ステップ２０１）、排水ポンプ１５は停止状態となる（ステップ２０２）。この後は、再び支流河川１２の水は水門１３から自然流下で本流河川１１に排水される。   When a typhoon, heavy rain, or heavy rain falls, the water levels of the mainstream river 11 and the tributary river 12 both fall and return to a normal state. When the water level of the main river 11 detected by the water level gauge 17 and the water level of the tributary river 12 detected by the water level gauge 18 are both lower than the set value, the control circuit 31 (step 208: Y, step 209: Y). Then, it is determined that the normal state has been restored, and an open command is output to the sluice 13 via the sluice controller 25 and a stop command is output to the drain pump 15. As a result, the water gate 13 is opened (step 201), and the drainage pump 15 is stopped (step 202). Thereafter, the water of the tributary river 12 is drained from the sluice 13 to the main river 11 under natural flow.

すなわち、制御回路３１は、水位計１７，１８の測定水位が設定水位より低い場合は、水門１３を開状態に、かつ排水ポンプ１５を停止状態に制御する。また、水位計１７，１８の測定水位が設定値より高く、流速計３２により測定された流速が設定値以下の場合は、水門１３を閉状態に、かつ排水ポンプ１５を運転状態に制御する。これらの結果、本流河川１１の水位上昇に伴う支流河川１２への逆流を、水門１３の早期閉鎖により確実に防止しつつ、支流河川１２の水をポンプ１５により放流路１４から本流河川１１に強制排水することができる。   That is, when the measured water level of the water level gauges 17 and 18 is lower than the set water level, the control circuit 31 controls the water gate 13 to the open state and the drain pump 15 to the stopped state. When the water levels measured by the water level meters 17 and 18 are higher than the set value and the flow rate measured by the velocimeter 32 is equal to or lower than the set value, the water gate 13 is closed and the drain pump 15 is controlled to operate. As a result, the water in the tributary river 12 is forced from the discharge channel 14 to the main river 11 by the pump 15 while reliably preventing the reverse flow to the tributary river 12 due to the rise in the water level of the main river 11 by early closing of the sluice 13. It can be drained.

このように、雨量の増加により、本流河川の水位が上昇し、支流河川から本流河川への自然流下による排水が困難になる状態を、支流河川に設けた流向計や流速計により精度よく検出でき、それらの検出結果に基づいて水門の開閉タイミングと排水ポンプの運転停止タイミングを最適に制御するので、排水機場における排水ポンプの稼働率を最小限に抑え、信頼性が高く確実で効率的な制御が可能となる。   In this way, the water level of the main river rises due to the increase in rainfall, and it is possible to accurately detect the situation where drainage due to natural flow from the tributary river to the main river becomes difficult by using a flow meter and an anemometer installed in the tributary river. Optimized control of sluice opening and closing timing and drain pump stop timing based on the detection results, minimizing the drain pump operation rate at the drainage station, and providing reliable, reliable and efficient control Is possible.

本発明による排水機場の運転制御装置の一実施の形態を示す機能ブロック図である。It is a functional block diagram which shows one Embodiment of the operation control apparatus of the drainage station by this invention. 同上一実施の形態の動作を説明するフローチャートである。It is a flowchart explaining operation | movement of one Embodiment same as the above. 本発明の他の実施の形態を示す機能ブロック図である。It is a functional block diagram which shows other embodiment of this invention. 同上他の実施の形態の動作を説明するフローチャートである。It is a flowchart explaining the operation | movement of other embodiment same as the above.

符号の説明Explanation of symbols

１１ 本流河川
１２ 支流河川
１３ 水門
１４ 放水路
１５ 排水ポンプ
１７，１８ 水位計
１９ 流向計
２１，３１ 制御回路
３２ 流速計 11 Mainstream River 12 Tributary River 13 Sluice 14 Drainage Channel 15 Drainage Pump 17, 18 Water Level Meter 19 Current Direction Meter 21, 31 Control Circuit 32 Current Meter

Claims (2)

支流河川から本流河川への合流点に設けられた水門、及び前記支流河川から前記水門をバイパスして本流河川に到る放水路に設けられた排水ポンプを有する排水機場の運転制御装置であって、
前記本流河川の、前記支流河川との合流点近くに設置された水位計と、
前記支流河川に設けられ、この支流河川の流れ方向を検出する流向計と、
前記水位計の測定水位が設定水位より低い場合は、前記水門を開状態に、かつ前記排水ポンプを停止状態に制御し、前記水位計の測定水位が設定値より高く、前記流向計による測定方向が本流河川から支流河川に向かう方向か或いは停止状態の場合は、前記水門を閉状態に、かつ前記排水ポンプを運転状態に制御する制御回路と
を備えたことを特徴とする排水機場の運転制御装置。 An operation control device for a drainage station having a sluice gate provided at a junction between a tributary river and a main river, and a drainage pump provided in a water discharge passage from the tributary river to the main river by bypassing the sluice. ,
A water level meter installed near the confluence of the main river and the tributary river;
A flow meter provided in the tributary river and detecting the flow direction of the tributary river;
When the water level measured by the water level meter is lower than the set water level, the water gate is controlled to be open and the drainage pump is stopped, and the water level measured by the water level meter is higher than a set value, and the direction measured by the flow meter Operation control of the drainage station, comprising a control circuit for controlling the drainage pump to be closed and the drainage pump to be in operation when the main stream river is in a direction from a main river to a tributary river or in a stopped state. apparatus. 支流河川から本流河川への合流点に設けられた水門、及び前記支流河川から前記水門をバイパスして本流河川に到る放水路に設けられた排水ポンプを有する排水機場の運転制御装置であって、
前記本流河川の、前記支流河川との合流点近くに設置された水位計と、
前記支流河川に設けられ、この支流河川から本流河川の流れ込む水の流速を検出する流速計と、
前記水位計の測定水位が設定水位より低い場合は、前記水門を開状態に、かつ前記排水ポンプを停止状態に制御し、前記水位計の測定水位が設定値より高く、前記流速計により測定された流速が設定値以下の場合は、前記水門を閉状態に、かつ前記排水ポンプを運転状態に制御する制御回路と
を備えたことを特徴とする排水機場の運転制御装置。 An operation control device for a drainage station having a sluice gate provided at a junction between a tributary river and a main river, and a drainage pump provided in a water discharge passage from the tributary river to the main river by bypassing the sluice. ,
A water level meter installed near the confluence of the main river and the tributary river;
An anemometer that is provided in the tributary river and detects the flow velocity of water flowing into the main river from the tributary river;
When the measured water level of the water level meter is lower than the set water level, the water gate is controlled to be in an open state and the drainage pump is stopped, and the measured water level of the water level meter is higher than a set value and is measured by the anemometer. And a control circuit that controls the sluice to be closed and the drain pump to be in operation when the flow velocity is less than a set value.
JP2007019690A 2007-01-30 2007-01-30 Operation controller for drainage pumping station Pending JP2008186266A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014055428A (en) * 2012-09-12 2014-03-27 Ebara Corp Flood control facility and application method of flood control facility
CN108757419A (en) * 2018-05-31 2018-11-06 河南森源电气股份有限公司 A kind of water pump control circuit and water pump
CN116719252A (en) * 2023-08-08 2023-09-08 广东省广业装备科学技术研究院有限公司 Control method of integrated pump brake equipment
JP7355305B1 (en) 2022-04-19 2023-10-03 株式会社ガリレオ Water level measurement system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014055428A (en) * 2012-09-12 2014-03-27 Ebara Corp Flood control facility and application method of flood control facility
CN108757419A (en) * 2018-05-31 2018-11-06 河南森源电气股份有限公司 A kind of water pump control circuit and water pump
JP7355305B1 (en) 2022-04-19 2023-10-03 株式会社ガリレオ Water level measurement system
JP2023158916A (en) * 2022-04-19 2023-10-31 株式会社ガリレオ Water level measurement system
CN116719252A (en) * 2023-08-08 2023-09-08 广东省广业装备科学技术研究院有限公司 Control method of integrated pump brake equipment
CN116719252B (en) * 2023-08-08 2023-11-07 广东省广业装备科学技术研究院有限公司 Control method of integrated pump brake equipment

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