JPH0797983A - Diagnostic device for abnormal discharge of pump - Google Patents
Diagnostic device for abnormal discharge of pumpInfo
- Publication number
- JPH0797983A JPH0797983A JP5242665A JP24266593A JPH0797983A JP H0797983 A JPH0797983 A JP H0797983A JP 5242665 A JP5242665 A JP 5242665A JP 24266593 A JP24266593 A JP 24266593A JP H0797983 A JPH0797983 A JP H0797983A
- Authority
- JP
- Japan
- Prior art keywords
- pump
- flow rate
- liquid
- pressure
- measuring
- 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.)
- Granted
Links
Landscapes
- Measuring Volume Flow (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、例えば、汚泥の脱水に
おける給泥ポンプや凝集剤添加ポンプ、その他水処理に
おけるポンプで配管に液体を流す際のポンプの吐出量の
異常を診断するポンプの吐出量異常診断装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pump for diagnosing an abnormal discharge amount of a pump when a liquid is made to flow in a pipe by a mud supply pump or a coagulant addition pump for sludge dewatering The present invention relates to a discharge amount abnormality diagnosing device.
【０００２】[0002]
【従来の技術】従来、この種の装置には、配管に配設さ
れたポンプを駆動させて、配管に水等の液体を流す装置
であって、上記液体の流量が所定量になるように、ポン
プの吐出量をフィードバック制御ものがあった。しか
し、ポンプの吐出量をフィードバック制御するだけで
は、上記液体の流量は、ポンプのインペラーの摩耗等の
要因で、必ずしも所定量にならない。そこで、配管に流
量計等を配置して液体の流量を計測し、上記流量が所定
量になるように、出力信号を送出して上記ポンプの吐出
量を制御する装置があった。2. Description of the Related Art Conventionally, an apparatus of this kind is an apparatus for driving a pump arranged in a pipe to flow a liquid such as water into the pipe so that the flow rate of the liquid becomes a predetermined amount. There was a feedback control of the discharge amount of the pump. However, if only the discharge amount of the pump is feedback controlled, the flow rate of the liquid does not always reach the predetermined amount due to factors such as wear of the impeller of the pump. Therefore, there is a device that arranges a flow meter or the like in the pipe to measure the flow rate of the liquid, and sends an output signal to control the discharge rate of the pump so that the flow rate becomes a predetermined amount.
【０００３】[0003]
【発明が解決しようとする課題】ところが、上記装置で
は、ポンプのインペラーの摩耗等の要因が悪化すると、
液体の流量がなかなか所定量に達しないので、ポンプの
吐出量制御を行うための出力信号が過大（正常時の１０
０％に近い値）になるという問題点があった。また、上
記装置では、配管系の経路が閉塞した場合も、上記と同
様に、液体の流量が所定量に達せず、出力信号が過大に
なるとともに、ポンプの吐出圧が異常に高くなるという
問題点があった。However, in the above device, when factors such as wear of the impeller of the pump deteriorate,
Since the flow rate of the liquid does not reach the predetermined amount, the output signal for controlling the discharge amount of the pump is too large (10
There was a problem that it became a value close to 0%). Further, in the above device, even when the path of the piping system is blocked, similarly to the above, the flow rate of the liquid does not reach the predetermined amount, the output signal becomes excessive, and the discharge pressure of the pump becomes abnormally high. There was a point.
【０００４】さらに、上記装置では、配管に流れる液体
の流量を流量計の設定値に合わせるように、ポンプへの
出力信号を自動的に変化させるので、現場の担当者は、
この時点では上記ポンプの異常を検知できない。すなわ
ち、担当者は、配管系の異常振動や吐出量の低下等が発
生して、初めてこの装置を用いたシステムの性能低下に
気付くこととなり、システム全体を停止して性能低下の
原因を調べる必要性が生じるという問題点もあった。Further, in the above apparatus, since the output signal to the pump is automatically changed so that the flow rate of the liquid flowing in the pipe matches the set value of the flow meter, the person in charge of the site is
At this point, the pump abnormality cannot be detected. In other words, the person in charge will notice the deterioration of the performance of the system using this device for the first time due to abnormal vibration of the piping system, decrease in discharge amount, etc., and it is necessary to stop the entire system and investigate the cause of performance deterioration. There was also a problem that it caused sex.
【０００５】本発明は、上記問題点に鑑みなされたもの
で、ポンプの故障や配管閉塞を早期に検知することがで
きるポンプの吐出量異常診断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 problems, and an object of the present invention is to provide a pump discharge amount abnormality diagnosing device capable of early detecting a pump failure or a pipe blockage.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、本発明では、ポンプを駆動させて配管に所定量の液
体を流す装置であって、該ポンプの吐出圧を計測する圧
力計測手段である圧力計と、前記配管に流れる液体の流
量を計測する流量計測手段である流量計と、前記計測さ
れた吐出圧及び流量の値を予め定めた吐出圧及び流量の
設定値と比較する比較手段である制御器とを備えるポン
プの吐出量異常診断装置が提供される。To achieve the above object, the present invention is a device for driving a pump to flow a predetermined amount of liquid in a pipe, and a pressure measuring means for measuring the discharge pressure of the pump. A certain pressure gauge, a flow meter which is a flow rate measuring means for measuring the flow rate of the liquid flowing through the pipe, and a comparing means for comparing the measured discharge pressure and flow rate values with predetermined discharge pressure and flow rate set values. There is provided a discharge amount abnormality diagnosing device for a pump, comprising:
【０００７】[0007]
【作用】計測された吐出圧及び流量と、ポンプの吐出量
を制御する出力信号との相関関係とから、ポンプの吐出
量が異常に到る傾向にあるかどうか診断する。従って、
異常に到る傾向にある場合には、異常警報を発したり、
異常対処のメッセージを表示又は印字させ、担当者は、
ポンプの故障や配管閉塞等の異常を早期に検知すること
ができる。According to the correlation between the measured discharge pressure and flow rate and the output signal for controlling the discharge amount of the pump, it is diagnosed whether the discharge amount of the pump tends to be abnormal. Therefore,
If there is a tendency to reach an abnormality, an abnormal alarm will be issued,
Display or print a message to deal with the abnormality, and the person in charge will
Abnormalities such as pump failure and pipe blockage can be detected early.
【０００８】[0008]
【実施例】本発明の実施例を図１乃至図３の図面に基づ
き説明する。図１は、本発明に係るポンプの吐出量異常
診断装置の実施例を示す構成ブロック図である。図にお
いて、ポンプ１１は、ポンプ駆動装置１２によって駆動
し、配管１３に所定量の液体を流している。上記配管１
３には、上記液体の流量を計測する流量計１４とポンプ
１１の吐出圧を計測する圧力計１５が配設されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings of FIGS. FIG. 1 is a configuration block diagram showing an embodiment of a pump discharge amount abnormality diagnosing device according to the present invention. In the figure, a pump 11 is driven by a pump drive device 12 and causes a predetermined amount of liquid to flow through a pipe 13. Above piping 1
3, a flow meter 14 that measures the flow rate of the liquid and a pressure gauge 15 that measures the discharge pressure of the pump 11 are provided.
【０００９】上記流量計１４及び圧力計１５は、アナロ
グ／デジタル変換器等からなる入力信号変換器１６，１
７を介して制御器（ＣＰＵ）１８とそれぞれ接続されて
おり、上記流量計１４と圧力計１５によって計測された
流量及び吐出圧のアナログ信号は、入力信号変換器１
６，１７でデジタル信号にそれぞれ変換されて、ＣＰＵ
１８に入力している。The flowmeter 14 and the pressure gauge 15 are input signal converters 16 and 1 composed of analog / digital converters and the like.
An analog signal of the flow rate and the discharge pressure measured by the flow meter 14 and the pressure gauge 15 is connected to the controller (CPU) 18 via the input signal converter 1.
Converted to digital signals at 6 and 17, CPU
I am typing in 18.
【００１０】また、ＣＰＵ１８には、上記入力信号変換
器１６，１７の他に、キーボード等からなる入力装置１
９が接続されており、吐出圧及び流量の設定値や設定さ
れたその他の定数等が予め入力されている。ＣＰＵ１８
は、内部に有する記憶装置に、上記吐出圧及び流量の設
定値とポンプの吐出量を制御する出力信号との相関関係
を記憶している。In addition to the input signal converters 16 and 17, the CPU 18 has an input device 1 including a keyboard and the like.
9 is connected, and the set values of the discharge pressure and the flow rate, other set constants, and the like are input in advance. CPU18
Stores a correlation between the set values of the discharge pressure and the flow rate and an output signal for controlling the discharge amount of the pump in a storage device provided inside.
【００１１】上記記憶される相関関係には、例えば図２
に示すような正常状態での特性と、図３に示すような異
常状態での特性がある。なお、図２、図３において、破
線は、液体の流量と出力信号の相関関係を示し、実線
は、吐出圧と出力信号の相関関係を示している。また、
図３において、実線は、途中でイとロに分かれている
が、実線イは、配管１３が閉塞された場合の特性を示
し、実線ロは、ポンプ１１にインペラーの摩耗が生じた
場合の特性を示している。The stored correlations are shown in FIG.
There are characteristics in a normal state as shown in FIG. 3 and characteristics in an abnormal state as shown in FIG. 2 and 3, the broken line shows the correlation between the liquid flow rate and the output signal, and the solid line shows the correlation between the discharge pressure and the output signal. Also,
In FIG. 3, the solid line is divided into a and b in the middle, but the solid line a shows the characteristic when the pipe 13 is closed, and the solid line b shows the characteristic when the impeller of the pump 11 is worn. Is shown.
【００１２】ＣＰＵ１８は、流量計１４によって計測さ
れた流量と予め定められた流量の設定値を比較し、上記
液体の流量が所定の流量になるように、デジタル／アナ
ログ変換器等からなる出力信号変換器２０を介してポン
プ駆動装置１２に、ポンプの吐出量を制御する出力信号
を送出する。この出力信号により、ポンプ駆動装置１２
は、ポンプ１１を駆動させてポンプの吐出量を制御す
る。The CPU 18 compares the flow rate measured by the flow meter 14 with a preset flow rate setting value, and outputs an output signal including a digital / analog converter so that the flow rate of the liquid becomes a predetermined flow rate. An output signal for controlling the discharge amount of the pump is sent to the pump driving device 12 via the converter 20. With this output signal, the pump drive device 12
Drives the pump 11 to control the discharge amount of the pump.
【００１３】また、ＣＰＵ１８は、流量計１４と圧力計
１５によって計測された流量及び吐出圧と出力信号の相
関関係を演算処理して求める。そして、ＣＰＵ１８は、
その求めた相関関係のデータと、上記記憶された正常状
態及び異常状態での相関関係のデータ（図２、図３参
照）とを比較し、出力信号の上昇に対する計測流量及び
吐出圧の上昇傾向を診断する。ここで、ＣＰＵ１８は、
診断結果から異常を検知した場合には、例えば異常警報
を発したり、表示装置２１を制御して異常対処のメッセ
ージを表示させたり、又は印字装置２２を制御して上記
異常対処のメッセージを印字させる。The CPU 18 also calculates the correlation between the flow rate and discharge pressure measured by the flow meter 14 and the pressure gauge 15 and the output signal. Then, the CPU 18
The obtained correlation data is compared with the stored correlation data in the normal state and the abnormal state (see FIGS. 2 and 3), and the measured flow rate and the discharge pressure increase tendency with respect to the output signal increase. To diagnose. Here, the CPU 18
When an abnormality is detected from the diagnosis result, for example, an abnormality alarm is issued, the display device 21 is controlled to display a message for dealing with the abnormality, or the printing device 22 is controlled to print the message for dealing with the abnormality. .
【００１４】すなわち、ＣＰＵ１８は、計測データから
求めた相関関係が、異常状態での相関関係に近似してお
り、そのうち吐出圧と出力信号の相関関係が実線イに近
似している場合（吐出圧及び出力信号ともに高い場合）
には、配管系の経路が閉塞していると判断し、また吐出
圧と出力信号の相関関係が実線ロに近似している場合
（出力信号が高い場合）には、ポンプのインペラーの摩
耗と判断して、異常対処のメッセージを出力する。That is, when the correlation obtained from the measurement data is close to the correlation in the abnormal state, and the correlation between the discharge pressure and the output signal is close to the solid line B (the discharge pressure). And both output signals are high)
Indicates that the piping system path is blocked, and if the correlation between the discharge pressure and the output signal is close to the solid line B (when the output signal is high), the impeller of the pump may be worn. Judges and outputs a message to deal with the error.
【００１５】[0015]
【発明の効果】以上説明したように、本発明では、ポン
プの吐出圧と配管を流れる液体の流量を計測し、この計
測された吐出圧及び流量と、ポンプの吐出量を制御する
出力信号との相関関係を求め、上記求めた相関関係と、
予め定めた正常時又は異常時での相関関係とから、ポン
プの吐出量が異常に到る傾向にあるかどうか診断し、異
常に到る傾向にある場合には、異常を担当者に知らせる
ので、担当者は、ポンプの故障や配管閉塞等の異常を早
期に検知することができる。これにより、本発明では、
上記装置を用いたシステム全体の故障につながる事故を
未然に防止することができ、システム全体の信頼性を向
上することができる。As described above, according to the present invention, the discharge pressure of the pump and the flow rate of the liquid flowing through the pipe are measured, and the measured discharge pressure and flow rate and the output signal for controlling the discharge quantity of the pump are provided. The correlation of the above, and the correlation obtained above,
It is diagnosed whether the discharge amount of the pump tends to be abnormal from the predetermined normal or abnormal correlation, and if it tends to be abnormal, the person in charge is notified of the abnormality. A person in charge can detect an abnormality such as a pump failure or a pipe blockage at an early stage. Therefore, in the present invention,
It is possible to prevent accidents that lead to failure of the entire system using the above device, and improve the reliability of the entire system.
【図１】本発明に係るポンプの吐出量異常診断装置の実
施例を示す構成ブロック図である。FIG. 1 is a configuration block diagram showing an embodiment of a pump discharge amount abnormality diagnosing device according to the present invention.
【図２】正常状態における吐出圧及び流量と出力信号と
の相関関係を示す特性図である。FIG. 2 is a characteristic diagram showing a correlation between a discharge pressure and a flow rate and an output signal in a normal state.
【図３】異常状態における吐出圧及び流量と出力信号と
の相関関係を示す特性図である。FIG. 3 is a characteristic diagram showing a correlation between a discharge pressure and a flow rate and an output signal in an abnormal state.
１１ ポンプ １２ ポンプ駆動装置 １３ 配管 １４ 流量計 １５ 圧力計 １６，１７ 入力信号変換器 １８ 制御器（ＣＰＵ） １９ 入力装置 ２０ 出力信号変換器 ２１ 表示装置 ２２ 印字装置 11 Pump 12 Pump Drive Device 13 Piping 14 Flow Meter 15 Pressure Gauge 16, 17 Input Signal Converter 18 Controller (CPU) 19 Input Device 20 Output Signal Converter 21 Display Device 22 Printing Device
Claims (1)
を流す装置であって、該ポンプの吐出圧を計測する圧力
計測手段と、 前記配管に流れる液体の流量を計測する流量計測手段
と、 前記計測された吐出圧及び流量の値を予め定めた吐出圧
及び流量の設定値と比較する比較手段とを備えたことを
特徴とするポンプの吐出量異常診断装置。1. A device for flowing a predetermined amount of liquid into a pipe by driving a pump, comprising: pressure measuring means for measuring a discharge pressure of the pump; and flow rate measuring means for measuring a flow rate of the liquid flowing through the pipe. A discharge amount abnormality diagnosing device for a pump, comprising: a comparing unit configured to compare the measured values of the discharge pressure and the flow rate with predetermined set values of the discharge pressure and the flow rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24266593A JP3839855B2 (en) | 1993-09-29 | 1993-09-29 | Pump discharge amount abnormality diagnosis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24266593A JP3839855B2 (en) | 1993-09-29 | 1993-09-29 | Pump discharge amount abnormality diagnosis device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0797983A true JPH0797983A (en) | 1995-04-11 |
| JP3839855B2 JP3839855B2 (en) | 2006-11-01 |
Family
ID=17092426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24266593A Expired - Fee Related JP3839855B2 (en) | 1993-09-29 | 1993-09-29 | Pump discharge amount abnormality diagnosis device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3839855B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0989621A (en) * | 1995-09-21 | 1997-04-04 | Tokyo Gas Co Ltd | Flow detector |
| JP2006052865A (en) * | 2004-08-09 | 2006-02-23 | Tokyo Electric Power Co Inc:The | Circulating water system, circulating water system control method, computer program and flow rate measurement method |
| CN104863836A (en) * | 2015-04-29 | 2015-08-26 | 青岛天时海洋石油装备有限公司 | Intelligent slurry pump control system |
| CN107061248A (en) * | 2016-11-18 | 2017-08-18 | 浙江美罗机电有限公司 | A kind of control method of Water pump pressure controller |
| WO2018128004A1 (en) * | 2017-01-05 | 2018-07-12 | 日本電産テクノモータ株式会社 | Pump device and pump-device control method |
| CN113653627A (en) * | 2021-08-28 | 2021-11-16 | 威乐(中国)水泵系统有限公司 | Control method, device and system of water pump |
-
1993
- 1993-09-29 JP JP24266593A patent/JP3839855B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0989621A (en) * | 1995-09-21 | 1997-04-04 | Tokyo Gas Co Ltd | Flow detector |
| JP2006052865A (en) * | 2004-08-09 | 2006-02-23 | Tokyo Electric Power Co Inc:The | Circulating water system, circulating water system control method, computer program and flow rate measurement method |
| CN104863836A (en) * | 2015-04-29 | 2015-08-26 | 青岛天时海洋石油装备有限公司 | Intelligent slurry pump control system |
| CN107061248A (en) * | 2016-11-18 | 2017-08-18 | 浙江美罗机电有限公司 | A kind of control method of Water pump pressure controller |
| WO2018128004A1 (en) * | 2017-01-05 | 2018-07-12 | 日本電産テクノモータ株式会社 | Pump device and pump-device control method |
| CN113653627A (en) * | 2021-08-28 | 2021-11-16 | 威乐(中国)水泵系统有限公司 | Control method, device and system of water pump |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3839855B2 (en) | 2006-11-01 |
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