JPS6155639B2 - - Google Patents
Info
- Publication number
- JPS6155639B2 JPS6155639B2 JP12515077A JP12515077A JPS6155639B2 JP S6155639 B2 JPS6155639 B2 JP S6155639B2 JP 12515077 A JP12515077 A JP 12515077A JP 12515077 A JP12515077 A JP 12515077A JP S6155639 B2 JPS6155639 B2 JP S6155639B2
- Authority
- JP
- Japan
- Prior art keywords
- water level
- pump
- speed
- setting device
- pumps
- 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.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 42
- 238000005259 measurement Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Landscapes
- Control Of Non-Positive-Displacement Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Description
【発明の詳細な説明】
本発明は上下道等に用いられるポンプ運転制御
装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pump operation control device used for up and down roads.
従来上下水道設備に於けるポンプの運転制御は
第１図で示すように行われていた。第１図に於て
ポンプ井１１の水位を水位計33Wで検出し、２つ
の警報設定器A1，A2によりポンプP1，P2…の運
転台数制御を行つている。ここで一方の警報設定
器A1の設定水位１より、ポンプ起動用シーケン
ス装置１２で１台目ポンプP1を運転する。又ポン
プ井の水位が増加すれば他方の警報設定器A2の
設定水位により２台目ポンプP2の運転と云うよう
にｎ台目まで順次追加起動される。しかしこの場
合、送水流量がポンプ台数追加のつど急激に変動
するため受入側で安定な制御が不可能となる欠点
がある。 Conventionally, pump operations in water and sewage facilities have been controlled as shown in FIG. In FIG. 1, the water level in the pump well 11 is detected by a water level meter 33W, and the number of operating pumps P1 , P2, . . . is controlled by two alarm setting devices A1, A2 . Here, the first pump P 1 is operated by the pump starting sequence device 12 from the set water level 1 of one of the alarm setting devices A 1 . When the water level in the pump well increases, the second pump P2 is activated according to the water level set by the other alarm setting device A2 , and so on, and so on, and so on. However, in this case, the water flow rate changes rapidly each time the number of pumps is added, making stable control impossible on the receiving side.
本考案の目的は、複数台のポンプを速度及び台
数制御してポンプ井の水位を一定に保つべく制御
するものに於て、ポンプ台数追加時、ポンプ吐出
側の流量が急激に変動しないように制御できるポ
ンプ運転制御装置を提供することにある。 The purpose of this invention is to prevent sudden fluctuations in the flow rate on the pump discharge side when adding more pumps when controlling the speed and number of multiple pumps to maintain a constant water level in a pump well. The object of the present invention is to provide a pump operation control device that can be controlled.
以下本発明を図面に示す一実施例を参照して説
明する。第２図に於て、１１はポンプ井で、複数
台のポンプP1，P2…が連結され、水位を一定に保
つべく運転制御される。33Wは上記ポンプ井１１
の水位を測定する水位計、HS1は手動操作により
ポンプ井１１の水位を所望の目標値に設定する水
位設定器、SPIはサンプルPI器で、上記水位計
33Wの測定値と、水位設定器HS1の設定値を比較
し、両者の偏差に応じて対応するポンプ運転特性
信号を出力する。PC1，PC2は共に速度制御器
で、上記サンプルPI器SPIの出力信号に対応して
対応するポンプP1又はP2を速度制御する。この速
度制御器PC1，PC2としては、入力信号に応じて
出力間隔を変化させポンプP1，P2を速度制御する
ようなものを用いればよい。LYは比較増幅器
で、前記水位計33Wの測定値と水位設定器HS1の
設定値を比較し、＋方向の偏差（測定値＞設定値
の場合）が一定値以上になると、ポンプ台数増加
信号を出力する。Ａは水位に関する警報設定器
で、ポンプ井１１の水位が予め設定された値に達
すると、第１段ポンプP1の起動指令を発する。
A1，A2はポンプ速度の下限値に対する警報設定
器で、対応するポンプP1又はP2の速度が予め設定
された下限値に達すると対応するポンプP1又はP2
の停止指令を発する。HS2は手動によりポンプ
P1，P2…の速度を設定する速度設定器である。２
２はシーケンス装置で、前記比較増幅器LY、警
報設定器Ａ等による起動指令や、警報設定器
A1，A2による停止指令等を受け、対応するポン
プP1，P2を起動又は停止制御する。このためシー
ケンスは通常使用されている一般的な起動又は停
止シーケンスを用いればよく、ここでは詳細な説
明は省略する。またこのシーケンス装置２２は、
台数追加に伴う起動制御により附勢され動作する
制御リレーＸを持つている。この制御リレーＸは
動作時各速度制御器PC1，PC2を、サンプルPI器
SPIから分離するｂ接点B1，B2と、同動作時前記
速度設定器HS2の出力回路を各速度制御器PC1，
PC2及びサンプルPI器SPIに接続するａ接点C1，
C2，C3を持つている。またこの制御リレーＸは
運転中のポンプP1と新たに起動されたポンプP2と
の速度が、共に速度設定器HS2の設定速度に達す
ることにより復帰する如く構成される。TGは回
転計で、各ポンプP1，P2…の速度を検出する。そ
の出力は、上記シーケンス装置２２に制御リレー
の復帰条件や、速度制御器PC1，PC2に対するフ
イートバツク信号更に警報設定器A1，A2の測定
入力としてそれぞれに加わる。 The present invention will be described below with reference to an embodiment shown in the drawings. In FIG. 2, reference numeral 11 denotes a pump well, to which a plurality of pumps P 1 , P 2 . . . are connected and whose operation is controlled to keep the water level constant. 33W is the pump well 11 above.
HS 1 is a water level setting device that manually sets the water level of pump well 11 to the desired target value, and SPI is a sample PI device that measures the water level of pump well 11.
The measured value of 33W is compared with the set value of the water level setting device HS 1 , and a corresponding pump operation characteristic signal is output according to the deviation between the two. Both PC 1 and PC 2 are speed controllers, which control the speed of the corresponding pump P 1 or P 2 in accordance with the output signal of the sample PI device SPI. As the speed controllers PC 1 and PC 2 , those that control the speed of the pumps P 1 and P 2 by changing the output interval according to the input signal may be used. LY is a comparison amplifier that compares the measured value of the 33W water level meter and the set value of the water level setter HS 1 , and if the deviation in the + direction (when measured value > set value) exceeds a certain value, a signal to increase the number of pumps is sent. Output. A is an alarm setting device regarding the water level, which issues a start command for the first stage pump P1 when the water level in the pump well 11 reaches a preset value.
A 1 and A 2 are alarm setting devices for the lower limit value of pump speed, and when the speed of the corresponding pump P 1 or P 2 reaches the preset lower limit value, the corresponding pump P 1 or P 2
issue a stop command. HS 2 pumped manually
This is a speed setting device that sets the speed of P 1 , P 2 .... 2
2 is a sequence device that receives start commands from the comparison amplifier LY, alarm setting device A, etc., and alarm setting device.
Upon receiving stop commands etc. from A 1 and A 2 , the corresponding pumps P 1 and P 2 are controlled to start or stop. Therefore, a commonly used starting or stopping sequence may be used as the sequence, and a detailed explanation thereof will be omitted here. Moreover, this sequence device 22
It has a control relay X that is energized and operated by activation control as the number of units is added. This control relay X connects each speed controller PC 1 and PC 2 to the sample PI
The b contacts B 1 , B 2 separated from the SPI and the output circuit of the speed setter HS 2 during simultaneous operation are connected to each speed controller PC 1 ,
A contact C 1 connected to PC 2 and sample PI device SPI,
It has C 2 and C 3 . Further, this control relay X is configured so that the speed of the pump P 1 in operation and the newly started pump P 2 both reach the set speed of the speed setting device HS 2 to return to normal operation. TG is a tachometer that detects the speed of each pump P 1 , P 2 . The output is applied to the sequence device 22 as a return condition for the control relay, a feedback signal for the speed controllers PC 1 and PC 2, and as a measurement input for the alarm setting devices A 1 and A 2 , respectively.
次に作用を説明する。警報設定器Ａの設定値
と、ポンプ井１１の水位計33Wの水位信号によ
り、ポンプP1がポンプ起動シーケンス２２により
運転される。この時水位設定器HS1の設定信号と
水位計33Wの測定信号がサンプルPI器SPIで比較
され、その差が正の場合は速度制御器PC1により
ポンプP1の回転数を増とし、逆に負の場合は回転
数を減らす。さらにポンプ井１１の水位が低下
し、ポンプP1の速度が一定値以下になつた場合
は、警報設定器A1の指令によりシーケンス装置
２２によつてポンプP1を停止させる。又水位設定
器HS1の設定値より、ポンプ井１１の水位が上昇
した場合は水位計33Wの測定信号と手動設定器
HS1の設定信号とを比較増幅器LYで比較し、測
定信号が大であればシーケンス装置２２により２
台目ポンプP2が起動される。 Next, the effect will be explained. The pump P 1 is operated according to the pump start sequence 22 based on the setting value of the alarm setting device A and the water level signal of the water level gauge 33W of the pump well 11. At this time, the setting signal of the water level setting device HS 1 and the measurement signal of the water level meter 33W are compared by the sample PI device SPI, and if the difference is positive, the rotation speed of the pump P 1 is increased by the speed controller PC 1 , and vice versa. If is negative, reduce the rotation speed. Further, when the water level in the pump well 11 decreases and the speed of the pump P 1 falls below a certain value, the sequence device 22 stops the pump P 1 in response to a command from the alarm setting device A 1 . In addition, if the water level of pump well 11 rises from the setting value of water level setting device HS 1 , the measurement signal of water level meter 33W and manual setting device
The comparison amplifier LY compares the setting signal of HS 1 , and if the measurement signal is large, the sequencer 22
The second pump P2 is started.
上記２台目ポンプP2に起動指令が加わると、シ
ーケンス装置２２に設けられたリレーＸが作動し
そのリレー接点B1，B2を開き接点C1，C2，C3を
閉じる。この動作により、今まで100％回転数で
運転中のポンプP1は、速度制御器PC1が速度設定
器HS2に接続されるので、この設定値に基ずく速
度調節信号により速度設定器HS2に設定された回
転数（例えば定格の50％）まで低下する。又追加
されたポンプP2は速度制御器PC2により、同じく
速度設定器HS2で設定された値（上記のように定
格の50％）の回転数まで加速される。このように
して両ポンプP1，P2が速度設定器HS2の設定値に
なると、これは両ポンプP1，P2に設けられた回転
計Ｔ，Ｇにて検出され、両者のアンド条件によ
り、シーケンス装置２２内のリレーＸを無励磁と
する。リレーＸが無励磁になると接点B1，B2が
閉路され、また接点C1，C2，C3は開き、両速度
制御器PC1，PC2はサンプルPI計SPIに再び接続
される。これにより水位計33Wによる測定信号と
水位設定器HSIの設定値とを基にサンプルPI計
SPIにより、両ポンプP1，P2を揃速運転させる。
又逆にポンプ井１１の水位が低下することにより
ポンプP2の回転数が低下して設定値以下になると
警報設定器A2が停止指令を発しシーケンス装置
２２によりポンプP2は停止され、ポンプP1だけの
１台運転となる。尚ポンプ２台だけの説明をした
が同様にｎ台数のポンプ制御も可能である。 When a start command is applied to the second pump P2 , the relay X provided in the sequence device 22 is activated, opening the relay contacts B1 , B2 and closing the contacts C1 , C2 , C3 . With this operation, the speed controller PC 1 of the pump P 1 , which has been operating at 100% rotation speed, is connected to the speed setter HS 2 . 2 (for example, 50% of the rated speed). The added pump P 2 is also accelerated by the speed controller PC 2 to the rotational speed of the value (50% of the rated value as described above) also set by the speed setter HS 2 . In this way, when both pumps P 1 and P 2 reach the set value of the speed setting device HS 2 , this is detected by the tachometers T and G provided on both pumps P 1 and P 2 , and the AND condition of both pumps is detected. As a result, the relay X in the sequence device 22 is de-energized. When relay X becomes de-energized, contacts B 1 and B 2 are closed, contacts C 1 , C 2 and C 3 are opened, and both speed controllers PC 1 and PC 2 are connected again to sample PI meter SPI. This allows the sample PI meter to be measured based on the measurement signal from the 33W water level meter and the setting value of the water level setting device HSI.
SPI causes both pumps P 1 and P 2 to operate at the same speed.
Conversely, when the water level in the pump well 11 decreases and the rotation speed of the pump P 2 decreases to below the set value, the alarm setting device A 2 issues a stop command, the sequence device 22 stops the pump P 2, and the pump P 2 is stopped. Only P1 will be operated. Although only two pumps have been described, it is also possible to control n pumps in the same way.
以上のように本発明によればｎ台のポンプによ
つて、ポンプ井水位の一定制御するものにおいて
水位設定器によるポンプ台数選択と速度設定器に
よる、ポンプ回転数制御とをポンプ最適運転シー
ケンス装置との結合によつてポンプ井水位の変動
を最小にする様に制御することのでき、しかも運
転台数変化時に於ける吐出側のシヨツクを最小に
できる等その効果は大きい。 As described above, according to the present invention, when a pump well water level is controlled at a constant level using n pumps, the pump optimum operation sequence device selects the number of pumps using a water level setting device and controls the pump rotation speed using a speed setting device. In combination with this, it is possible to control the fluctuations in the water level of the pump well to a minimum, and this has great effects, such as minimizing the shock on the discharge side when the number of pumps in operation changes.
第１図は従来装置を示す系統図、第２図は本発
明によるポンプ運転制御装置の一実施例を示す系
統図である。
１１……ポンプ井、２２……シーケンス装置、
３３Ｗ……水位計、HS1……水位設定器、SPI…
…サンプルPI器、LY……比較増幅器、PC1，PC2
……速度制御器、HS2……速度設定器、Ｘ……リ
レー。
FIG. 1 is a system diagram showing a conventional device, and FIG. 2 is a system diagram showing an embodiment of the pump operation control device according to the present invention. 11... Pump well, 22... Sequence device,
33W...Water level gauge, HS 1 ...Water level setting device, SPI...
...Sample PI unit, LY...Comparison amplifier, PC 1 , PC 2
...Speed controller, HS 2 ...Speed setting device, X...Relay.
Claims (1)
及び台数制御して、ポンプ井の水位を一定に保つ
べく制御するものに於て、ポンプ井の水位を測定
する水位計と、ポンプ井の水位を所望の値に設定
する水位設定器と、この水位設定器の設定値と前
記水位計の測定出力とを比較し、その偏差に応じ
て対応するポンプ運転特性信号を出力するサンプ
ルPI器と、このサンプルPI器の出力信号に応じて
対応するポンプを速度制御する速度制御器と、前
記水位設定器の設定値と前記水位計の測定値を比
較しその偏差が一定値以上になると台数増加信号
を出す比較増幅器と、各ポンプ毎に設けられ自己
の運転速度が一定値以下になると自己に対し停止
指令を発する警報設定器と、上記停止指令及び前
記台数増加信号を受け対応するポンプを起動又は
停止制御すると共に台数増加制御時前記各速度制
御器を前記サンプルPI器から速度設定器側に切換
えかつ運転中のポンプ及び起動されたポンプの速
度がそれぞれ上記速度設定器の設定値に達したこ
とにより再び速度制御器をサンプルPI器に切換え
る制御リレーを有するシーケンス装置とを備えた
ことを特徴とするポンプ運転制御装置。1 In systems that control the speed and number of multiple pumps connected to a pump well to keep the water level in the pump well constant, a water level gauge that measures the water level in the pump well and a water level in the pump well are used. a water level setting device that sets the water level setting device to a desired value; a sample PI device that compares the set value of the water level setting device with the measured output of the water level meter and outputs a corresponding pump operating characteristic signal according to the deviation; A speed controller that controls the speed of the corresponding pump according to the output signal of this sample PI device compares the set value of the water level setting device with the measured value of the water level meter, and if the deviation exceeds a certain value, a signal to increase the number of pumps is sent. an alarm setting device that is provided for each pump and issues a stop command to itself when its own operating speed falls below a certain value, and an alarm setting device that issues a stop command to itself when its own operating speed falls below a certain value, and a device that starts or starts the corresponding pump in response to the stop command and the number increase signal. At the time of stop control and control to increase the number of units, each speed controller was switched from the sample PI device to the speed setting device, and the speeds of the pumps in operation and the started pumps reached the set values of the speed setting devices. 1. A pump operation control device comprising: a sequence device having a control relay that switches the speed controller to the sample PI device again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12515077A JPS5459601A (en) | 1977-10-20 | 1977-10-20 | Pump operation controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12515077A JPS5459601A (en) | 1977-10-20 | 1977-10-20 | Pump operation controller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5459601A JPS5459601A (en) | 1979-05-14 |
| JPS6155639B2 true JPS6155639B2 (en) | 1986-11-28 |
Family
ID=14903098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12515077A Granted JPS5459601A (en) | 1977-10-20 | 1977-10-20 | Pump operation controller |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5459601A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5679691U (en) * | 1979-11-22 | 1981-06-27 |
-
1977
- 1977-10-20 JP JP12515077A patent/JPS5459601A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5459601A (en) | 1979-05-14 |
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