JPS59162395A - Device for monitoring state of operation of pump - Google Patents

Device for monitoring state of operation of pump

Info

Publication number
JPS59162395A
JPS59162395A JP3667583A JP3667583A JPS59162395A JP S59162395 A JPS59162395 A JP S59162395A JP 3667583 A JP3667583 A JP 3667583A JP 3667583 A JP3667583 A JP 3667583A JP S59162395 A JPS59162395 A JP S59162395A
Authority
JP
Japan
Prior art keywords
value
pump
flow rate
theoretical
characteristic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP3667583A
Other languages
Japanese (ja)
Inventor
Kanehiro Takahashi
高橋 金博
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Fuji Electric Manufacturing Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Electric Co Ltd, Fuji Electric Manufacturing Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP3667583A priority Critical patent/JPS59162395A/en
Publication of JPS59162395A publication Critical patent/JPS59162395A/en
Pending legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04DNON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00Control, e.g. regulation, of pumps, pumping installations or systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Non-Positive-Displacement Pumps (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE:To provide a pump operation state monitoring device capable of early detecting the trouble of measuring machinery, by measuring outputs in the state of operation of the pump, calculating theoretical values for the pump's characteristics, and comparing the theoretical values with the measured values. CONSTITUTION:The lift (h), discharge flow rate (q) and mean rotational frequency (n) of a pump are calculated as measured values on the basis of outputs found out by a reservoir water level detector, a sent water pressure detector, a sent water flow rate detector and a pump rotational frequency detector. Two of the measured values are applied to a pump characteristic theoretical value calculator to compute the other value as a theoretical value, which is compared with the corresponding measured value to detect the abnormality of the measured value in terms of the difference between the compared values.

Description

【発明の詳細な説明】 〔発明の属する技術分野〕 この発明は、ポンプ設備における運転状態監′視装置に
関し、特にポンプ回転数制御にょシ送水圧力および流量
を制御する場合の計測信号の監視装置に関するものであ
る。
[Detailed description of the invention] [Technical field to which the invention pertains] This invention relates to an operating state monitoring device for pump equipment, and in particular to a monitoring device for measurement signals when controlling pump rotation speed, water supply pressure and flow rate. It is related to.

一般に、ポンプ設備における計測信号の監視内容として
は、上下限監視、偏差監視、変化率監視、所定領域内監
視、断線もしくは電源遮断監視等多種多様に亘って行わ
れ、設備の信頼性を高めている。この場合、計測信号は
、流量、圧力、水位、跡転数等多数存在し、それぞれ前
記監視を行うため、多数の発信器、変換器および演算器
等の計測機器を使用して処理を行っている。このため、
この種の監視装置では、計測機器自体の故障が問題とな
る。すなわち、上下限監視や偏差監視によって検出でき
る大幅な信号変化をもたらす計器故障の場合は問題ない
が、こn以外の状態、例えば同一値のホールドや誤差の
拡大等の故障による検出は不可能な場合が多く、このよ
うな状態のままでは計測信号の監視機能の停止に至る難
点がある。
In general, measurement signals in pump equipment are monitored in a wide variety of ways, including upper and lower limit monitoring, deviation monitoring, rate of change monitoring, monitoring within a specified area, and monitoring for disconnection or power cutoff, etc., to improve the reliability of the equipment. There is. In this case, there are many measurement signals such as flow rate, pressure, water level, number of traces, etc., and in order to monitor each of them, processing is performed using a large number of measuring instruments such as transmitters, converters, and calculators. There is. For this reason,
With this type of monitoring device, failure of the measuring device itself poses a problem. In other words, there is no problem in the case of an instrument failure that causes a large signal change that can be detected by upper/lower limit monitoring or deviation monitoring, but it is impossible to detect failures in other conditions, such as holding the same value or increasing error. In many cases, if this state remains, the measurement signal monitoring function may stop.

〔発明の目的〕[Purpose of the invention]

ポンプの運転状態における各種出力特性を計測し、これ
らの計測信号からポンプ特性演算式によルボンプ特性の
理論値を算出し、このポンプ特性の理論値と実測値とを
比較してその差分量により実測値の異常すなわち計測機
器の故障を早期に検出し得るポンプ運転状態監視装置を
提供するにある。
Measure the various output characteristics of the pump under operating conditions, calculate the theoretical value of the pump characteristic from these measurement signals using the pump characteristic calculation formula, compare the theoretical value of the pump characteristic with the actual value, and calculate the difference based on the amount of difference. It is an object of the present invention to provide a pump operating state monitoring device capable of early detecting an abnormality in an actual measurement value, that is, a failure of a measuring device.

〔発明の要点〕[Key points of the invention]

本発明の構成を第1図に基づいて説明する。 The configuration of the present invention will be explained based on FIG.

すなわち、本発明においては、貯水池の水位検出手段と
、送水圧力検出手段と、送水流量検出手段と、ポンプ回
転数検出手段とを設け、これらの検出手段vこより検出
された出力1面に基づいてポンプの揚程値(h)と吐出
流量値(q)と回転数平均値(n)とをそILぞ−n−
夾測値として演算し、一方ボンブ特性理論値演算手段を
設け、この演算手段に前記各実測値のうち2つのilM
を入力して他の1つの値を理論値としてそれぞれ演算し
、この結果得られた理論値と実測値とをポンプ特性異常
判別手段によりそれぞれ対応させて比較しその差分量か
ら各実測値の異常を検出することを特徴とする。
That is, in the present invention, a reservoir water level detection means, a water supply pressure detection means, a water supply flow rate detection means, and a pump rotation speed detection means are provided, and based on the output detected by these detection means v. The pump head value (h), discharge flow rate value (q), and average rotation speed value (n) are IL.
On the other hand, bomb characteristic theoretical value calculation means is provided, and two ilM of each of the above-mentioned actual measurement values are calculated in this calculation means.
is input and one other value is calculated as the theoretical value, and the resulting theoretical value and the actual measured value are compared in correspondence with each other using the pump characteristic abnormality determination means, and the abnormality of each actual measured value is determined from the difference amount. It is characterized by detecting.

前記のポンプ運転状態監視装置において、ポンプ特性理
論値演算手段は、次式 %式% (但し、hは揚程値、qは吐出流量値、nrIi回転数
平均値、A−Eはポンプの機械的特性定数である。) で示さnるポンプ特性式に、前記揚程値、吐出流量値、
回転数平均値のうち2つの値を代入して他の値を理論値
として演算する演算回路で構成すれば好適である。
In the above-mentioned pump operating state monitoring device, the pump characteristic theoretical value calculation means is calculated using the following formula (%) (where h is the head value, q is the discharge flow rate value, nrIi is the average rotational speed value, and A-E is the pump mechanical In the pump characteristic equation shown by n, the head value, the discharge flow rate value,
It is preferable to configure it with an arithmetic circuit that substitutes two values among the rotational speed average values and calculates the other value as a theoretical value.

また、ポンプ特性異常判別手段は、実揚程値。In addition, the means for determining abnormalities in pump characteristics is the actual head value.

吐出流量値および回転数平均値につきそれぞれ対応理論
値と実測値とを比較し、各実測値の異常全個別に判別し
、この判別結果に基づいて各実測値に対する異常警報出
方手段を付勢するような7成すれば好適である。
Compares the corresponding theoretical value and actual measured value for each discharge flow rate value and rotational speed average value, determines each abnormality of each actual value individually, and activates the abnormality alarm output means for each actual value based on the determination result. It is preferable that the

〔発明の実施例J 次に、本発明に係るポンプ運転状態監視装置の実施例に
つき、添付図面を挙照しながら以下詳細に説明する。
[Embodiment J of the Invention Next, an embodiment of the pump operating state monitoring device according to the present invention will be described in detail below with reference to the accompanying drawings.

まず、ポンプの出力特性は一般に流量(H)−揚程(Q
)曲線として知られ、揚程h、吐出流量q、回転数nと
から次式の関係を有する。
First, the output characteristics of a pump are generally flow rate (H) - head (Q
) curve, and has the following relationship based on the lift height h, the discharge flow rate q, and the rotation speed n.

h= F(q−n)=Anz−Bnq−C(1−q)2
−D、2−E・・―・ (1) なお、前記式(1)において、A、B、C,D、Eは機
械的特性から求められる定数である。すなわち、前記式
(1)で示されるポンプ特性式に基づいて、縦軸を揚程
11、横軸を流量qとし、回転数nをパラメータとすれ
ば、第2図に示すような特性曲線が得らnる。゛また、
この場合、ポンプの運転は、第2図に示すように、前記
ポンプ特性曲線と管路抵抗特性曲線几との交点(A、B
h= F(q-n)=Anz-Bnq-C(1-q)2
-D, 2-E... (1) In the above formula (1), A, B, C, D, and E are constants determined from mechanical properties. That is, based on the pump characteristic equation shown in equation (1) above, if the vertical axis is the head 11, the horizontal axis is the flow rate q, and the rotation speed n is the parameter, a characteristic curve as shown in Fig. 2 can be obtained. Ran.゛Also,
In this case, the pump operation is performed at the intersection (A, B
.

C)で行うものであるから、実際のポンプ運転点におけ
る揚程h、流量q、回転数nの数値は前記式(1)を満
足すべきである。
C), the numerical values of the head h, flow rate q, and rotation speed n at the actual pump operating point should satisfy the above formula (1).

そこで、本発明においては、前記揚程り、流量q、回転
数nをそれぞれ実測し、これらの実測値のうち2つの値
を前記ポンプ特性式(1)に代入することにより、残シ
の1つの値を理論値として求めることができる。従って
、このようにして得られた理論値を実測値と比較するこ
とによシ、実測値の異常を検出することができる1、第
6図は、所定のポンプ設備における揚程り流量q、回転
数nを実測するためのポンプ系統を示すものである。す
なわち、第6図は、配水池10から複数台のポンプPU
、〜PUkからなるポンプ設備12を介して所定の管路
抵抗特性Rを有する配管14に送水を行うポンプ系統で
ある。この場合、配水池10には水位検出手段16を設
け、ポンプ設備12の各ポンプに対しそれぞれ回転数検
出手段18を設け、さらに配管14にそれぞれ送水圧力
検出手段20および送水流量検出手段22を設ける。し
かるに、前記水位検出手段16で検出された水位値L1
 と送水圧力検出手段20で検出さj、た送水圧力値1
)oとを揚程値発生手段24に入力して式h=po−L
iに基づき揚程値hf:演算する。また、送水流量検出
手段22で検出さn、た送水流量値Qoを吐出流量値発
生手段26に入力して次式q = q、)/k (但し
、kは運転中のポンプ台数)に基づきポン11台当シの
吐出流量値qを演詐する。さらに、回転数検出手段18
で検出された回転数n、〜nkを回転数平均値発生手段
28に入力して次式n=Σn/′k(但し、kは運転中
のポンプ台数)に基づきポンプの回転数平均値nを演算
する。このようにして、前記揚程値発□  生手段24
、吐出流量値発生手段26および回転数平均値発生手段
28で演算された揚程値h、吐出流量値qおよび回転数
平均値nは、ポンプ設備の運転時における実測値として
把握される。
Therefore, in the present invention, by actually measuring the head, flow rate q, and rotation speed n, and substituting two of these measured values into the pump characteristic equation (1), one of the remaining The value can be obtained as a theoretical value. Therefore, by comparing the theoretical values obtained in this way with the actual measured values, abnormalities in the actual measured values can be detected. This figure shows a pump system for actually measuring the number n. That is, FIG. 6 shows a plurality of pumps PU from the water distribution reservoir 10.
, ~PUk is a pump system that supplies water to a pipe 14 having a predetermined pipe resistance characteristic R via a pump equipment 12 consisting of pumps 12, 12, 12, 12, 12, 12, 12, and 12. In this case, the water distribution reservoir 10 is provided with a water level detection means 16, each pump of the pump equipment 12 is provided with a rotation speed detection means 18, and the piping 14 is provided with a water supply pressure detection means 20 and a water supply flow rate detection means 22, respectively. . However, the water level value L1 detected by the water level detection means 16
and the water supply pressure value 1 detected by the water supply pressure detection means 20
)o into the head value generating means 24 to obtain the formula h=po-L.
Lifting head value hf: Calculate based on i. In addition, the water supply flow rate value Qo detected by the water supply flow rate detection means 22 is inputted to the discharge flow rate value generation means 26, and based on the following formula q = q, )/k (where k is the number of pumps in operation). The discharge flow rate value q of 11 units of pumps is falsified. Furthermore, rotation speed detection means 18
The rotational speed n, ~nk detected in is input to the rotational speed average value generation means 28, and the average rotational speed n of the pump is calculated based on the following formula n=Σn/'k (where k is the number of pumps in operation). Calculate. In this way, the head value generation means 24
, the pump head value h, the discharge flow rate value q, and the rotation speed average value n calculated by the discharge flow rate value generation means 26 and the rotation speed average value generation means 28 are grasped as actual measured values during operation of the pump equipment.

第4図は、前述した揚程値発生手段24、吐出流量値発
生手段26および回転数平均値発生手段28で演算され
た実測値h+ qe”  に基づいて前記ポンプ特性式
(1)によシ対応するポンプ特性の理論値H、Q 、 
Nを演算し、前記実測値h* qe ”の異常全判別す
る回路を示すものである。すなわち、第4図において、
診照符号60はポンプ特性理論値演算手段を示し、62
はポンプ特性異常判別手段を示す。ポンプ特性理論値演
算手段60は、前記ポンプ特性式(1)の演算処理を行
う演算回路として構成され、前記各実測値h+ q+ 
”を発生する手段24 、26 、28から出力される
実測値り、q、nのうち2つの値を入力して演算を行い
他の1つの値を理論値として算出する。この結果、前記
ポンプ特性理論値演算手段60においては、実測値h*
 qe”に対応する理論値fi、Q、Nを算出すること
ができる。このようにして、前記ポンプ特性理論値演算
手段30で算出された理論値1(、Q、Nは、前記各実
測値の発生手段24゜26.28で得られた実測値り、
q、nと共にポンプ特性異常判別手段62に入力してそ
れぞれ対応する理論値と実測値とを比較して各実測値の
異常を判別する。
FIG. 4 shows the response to the pump characteristic equation (1) based on the actual measured value h+qe'' calculated by the head value generation means 24, the discharge flow rate value generation means 26, and the rotational speed average value generation means 28 described above. Theoretical values of pump characteristics H, Q,
This figure shows a circuit that calculates N and determines all abnormalities in the actual measured value h* qe''. That is, in FIG.
Reference symbol 60 indicates pump characteristic theoretical value calculation means, and 62
indicates pump characteristic abnormality determination means. The pump characteristic theoretical value calculation means 60 is configured as an arithmetic circuit that performs calculation processing of the pump characteristic formula (1), and calculates each of the actual measured values h+ q+
The actual measured values output from the means 24, 26, and 28 for generating ``, q, and n are input, and the other value is calculated as the theoretical value. In the characteristic theoretical value calculating means 60, the actual measured value h*
Theoretical values fi, Q, and N corresponding to ``qe'' can be calculated. In this way, the theoretical values 1 (, Q, and N are the actual values The actual value obtained by the generating means 24°26.28,
Together with q and n, they are input to the pump characteristic abnormality determining means 62, and the corresponding theoretical values and actual measured values are compared to determine whether each actual measured value is abnormal.

そこで、前記ポンプ特性異常判別手段32で異常状態を
判別するフローチャートラ第5図に示す。
Therefore, a flowchart for determining an abnormal state by the pump characteristic abnormality determining means 32 is shown in FIG.

まず、ポンプ特性理論値演算手段30で演算された理論
揚程値Hと実測揚程値すとを比較し、等しければ正常で
あシ、特性異常判別プログラムの実行は直ちに終了する
。しかし、理論揚程値Hと実測揚程値りとの比較におい
て差分量が生じた場合は、前記理論揚程値りと実測回転
数平均値nとからポンプ特性式〇)に基づいて理論吐出
流量値Qを演算し、この理論吐出流量値Qと実測吐出流
量値qとを比較し、等しければ実測揚程値りの異常が検
出される。
First, the theoretical head value H calculated by the pump characteristic theoretical value calculation means 30 and the measured head value S are compared, and if they are equal, it is normal, and the execution of the characteristic abnormality determination program is immediately terminated. However, if a difference occurs in the comparison between the theoretical head value H and the measured head value, the theoretical discharge flow rate Q The theoretical discharge flow rate value Q and the measured discharge flow rate value q are compared, and if they are equal, an abnormality in the measured head value is detected.

また、前記理論吐出流量値Q′と実測吐出流量値qとの
比較において差分量が生じた場合および実測揚程値りの
異常が検出された後は、ポンプ特性理論値演算手段30
で演算された理論吐出流量値Qと実測吐出流量値qとを
比較し、等しければ次のステップへ移行する。しかし、
理論吐出流量値Qと実測吐出流量値qとの比較において
麦分量が生じた場合は、前記理論吐出流量値Qと冥測揚
程値りとからポンプ特性式(1)に基づいて理論回転数
平均値N′を演算し、この理論回転数平均値N′と実測
回転数平均値nとを比較し、等しければ実測吐出流量値
qの異常が検出される。
Further, when a difference occurs in the comparison between the theoretical discharge flow rate value Q' and the measured discharge flow rate value q, or after an abnormality in the measured head value is detected, the pump characteristic theoretical value calculation means 30
The theoretical discharge flow rate value Q calculated in step 1 is compared with the measured discharge flow rate value q, and if they are equal, the process moves to the next step. but,
If the amount of wheat occurs in the comparison between the theoretical discharge flow rate value Q and the measured discharge flow rate value q, the theoretical rotation speed average is calculated based on the pump characteristic formula (1) from the theoretical discharge flow rate value Q and the measured head value. The value N' is calculated, and the theoretical rotation speed average value N' is compared with the measured rotation speed average value n. If they are equal, an abnormality in the measured discharge flow rate value q is detected.

さらに、前記理論吐出流量値Qと実測吐出流量値qとの
比較において等しい場合、理論回転数平均値N′と実測
回転数平均値nとの比較において差分量を生じた場合お
よび実測吐出流量値qの異常i=検出された後は、ポン
プ特性理論値演算手段30で演算された理論回転数平均
値Nと実測回転数平均値nとを比較し、等しければ特性
異常として特性異常判別プログラムの実行を終了する。
Further, if the theoretical discharge flow rate value Q and the measured discharge flow rate value q are equal, if a difference occurs in the comparison between the theoretical rotation speed average value N' and the measured rotation speed average value n, and the actual measured discharge flow rate value After the abnormality i of q is detected, the theoretical rotational speed average value N calculated by the pump characteristic theoretical value calculation means 30 and the measured rotational speed average value n are compared, and if they are equal, it is determined as a characteristic abnormality and the characteristic abnormality determination program Terminate execution.

しかし、理論回転数平均値Nと実測回転数平均値nとの
比較において差分量が生じた場合は、前記理論回転数平
均値Nと実測吐出流量値qとからポンプ特性式(1)に
基づいて理論揚程値d′を演算し、この理論揚程値H′
と実測揚程値りとを比較し、等しければ実測回転数平均
値nの異常が検出され、特性異常判別プログラムの実行
を終了する。なお、前記理論揚程値Hと実測揚程値りと
の比較において差分量を生じた場合は、特性異常として
特性異常判別プログラムの実行を終了する。
However, if a difference occurs in the comparison between the theoretical rotation speed average value N and the measured rotation speed average value n, it is determined based on the pump characteristic formula (1) from the theoretical rotation speed average value N and the measured discharge flow rate value q. calculate the theoretical head value d', and calculate the theoretical head value H'
and the measured lift value, and if they are equal, an abnormality in the measured rotational speed average value n is detected, and the execution of the characteristic abnormality determination program is terminated. If a difference is found in the comparison between the theoretical head value H and the measured head value, it is determined that a characteristic abnormality has occurred and the execution of the characteristic abnormality determination program is terminated.

なお、前述したように、特性異常の判別結果でプログラ
ムの実行を終了する場合、一般には前ステップにおいて
実測揚程値りの異常および/または実測吐出流量値qの
異常を生じている場合が多い。
As described above, when the execution of a program is terminated based on the determination result of a characteristic abnormality, it is generally the case that an abnormality of the measured head value and/or an abnormality of the measured discharge flow rate value q has occurred in the previous step.

このようにして、前記ポンプ特性異常判別手段62にお
いて、実測値り、q、nについて異常が検出された場合
は、各実測値hr q# ”毎に異常信号を発生し、異
常警報出力手段64を付勢し、異常警報と共にポンプ設
備の運転停止制御を行う。
In this manner, when the pump characteristic abnormality determination means 62 detects an abnormality for the actual measurement values hr q#, it generates an abnormality signal for each actual measurement value hr q#'', and the abnormality alarm output means 64 energizes and issues an abnormality alarm as well as controls the operation and shutdown of the pump equipment.

〔発明の効果〕〔Effect of the invention〕

前述した実施例から明らかなように、ポンプ特性を示す
揚程値と吐出流量値と回転数平均値とからなる実測値か
ら理論値を演算し、侍ら几た理論値と実測値を対応比較
して差分量が生じた場合、実測値の異常を検出すること
によシ。
As is clear from the above-mentioned examples, the theoretical value is calculated from the measured value consisting of the pump head value, discharge flow rate value, and rotation speed average value indicating the pump characteristics, and the theoretical value and the actual measured value, which have been elaborated by the samurai, are compared correspondingly. If a difference occurs, it can be detected by detecting an abnormality in the actual measured value.

ポンプ設備の特性監視と共に計測機器の微妙な故障を診
断並びに検出することができ、これによシ計測機器の故
障対策を早期に行うことができ、ポンプ運転状態監視装
置の精度を向上し得ると共にこの種監視装置の信頼性の
向上を図ることができる。また、本発明によれば、ポン
プ特性を示す実測値のylL算からポンプ特性異常判別
に至る処理(第4図で鎖線で囲んだ部分)をマイクロコ
ンピュータにより簡便に実現することができる。
In addition to monitoring the characteristics of pump equipment, it is possible to diagnose and detect subtle failures in measuring equipment, which allows early countermeasures to be taken against failures of measuring equipment, improving the accuracy of pump operating status monitoring equipment, and The reliability of this type of monitoring device can be improved. Further, according to the present invention, the process from calculating ylL of the measured value indicating the pump characteristics to determining the abnormality of the pump characteristics (the part surrounded by the chain line in FIG. 4) can be easily realized by a microcomputer.

本発明装置は、前述したポンプ特性実測値り。The device of the present invention has the above-mentioned measured pump characteristics.

q、nのうちいずれか1つの信号の異常が検出さnた場
合、直ちに理論値11.Q、Nを実測値の代シに使用す
ることにより、自動制御系の計測値のバックアンプ方式
として有効に活用することができる。また、管路抵抗特
性几を制御要素として組合せることによル、ポンプ運転
特性全体をシミュレーションすることが可能となる。
If an abnormality in any one of the signals q and n is detected, the theoretical value 11. By using Q and N as substitutes for actual measured values, it can be effectively utilized as a back-amplification method for measured values in an automatic control system. Furthermore, by combining the pipe resistance characteristics as a control element, it becomes possible to simulate the entire pump operation characteristics.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明に係るポンプ運転状態監視装置の構成を
示すブロック回路図、第2図は本発明に適用するポンプ
特性式により得られるポンプ特性曲線図、第6図は本発
明に係るポンプ運転状態監視装置を実施するポンプ系統
とポンプ特性検出手段との構成配置を示す系統図、第4
図は第3図に示すポンプ特性検出手段で検出された検出
値に基づいてポンプ特性実測値および理論値を演算する
と共に前記実測値の異常全検出する手段の構成配置を示
すブロック回路図、第5図は第4図に示すポンプ特性異
常判別手段において実行する異常判別プログラムの70
−チャート図である。 10−・・配 水 池 12・・・ポンプ設備14・・
・配    管  16・・・水位検出手段18・・・
回転数検出手段  20・・・送水圧力検出手段122
・・・送水流量検出手段 24・・・揚程値発生手段2
6・・・吐出流量値発生手段           7
28・−・回転数平均値発生手段          
d60・・・ポンプ特性理論値演算手段       
 匡62・−・ポンプ特性異常判別手段 64・・・異常警報出力手段 特許出願人   富 士 電機 製 造 捗式会8、イ
よユ’f% m ’11B”/$’、7’)、−1ゆ
FIG. 1 is a block circuit diagram showing the configuration of a pump operating state monitoring device according to the present invention, FIG. 2 is a pump characteristic curve diagram obtained by a pump characteristic equation applied to the present invention, and FIG. 6 is a pump characteristic curve diagram of a pump according to the present invention. System diagram showing the configuration arrangement of the pump system implementing the operating state monitoring device and the pump characteristic detection means, No. 4
The figure is a block circuit diagram showing the configuration and arrangement of the means for calculating the measured pump characteristic value and the theoretical value based on the detected value detected by the pump characteristic detecting means shown in FIG. Figure 5 shows the abnormality determination program 70 executed by the pump characteristic abnormality determination means shown in Figure 4.
- Chart diagram. 10-...Water distribution pond 12...Pump equipment 14...
・Piping 16...Water level detection means 18...
Rotation speed detection means 20... Water supply pressure detection means 122
... Water supply flow rate detection means 24 ... Head value generation means 2
6...Discharge flow rate value generation means 7
28.--Rotation speed average value generation means
d60...Pump characteristic theoretical value calculation means
62... Pump characteristic abnormality determination means 64... Abnormal alarm output means Patent applicant: Fuji Electric Manufacturer: 8, Iyoyu'f% m '11B'/$', 7'), - 1 Yu

Claims (1)

【特許請求の範囲】 (1)  貯水池の水位を検出する水位検出手段と、ポ
ンプ設備から送出される送水の圧力を検出する送水圧力
検出手段と、ポンプ設備から送出される送水の流量を検
出する送水流量検出手段と、ポンプ設備のポンプ回転数
検出手段と、前記水位検出手段の出力と送水圧力検出手
段の出力とに基づいてポンプ揚程値を演算してその信号
を発生する揚程値発生手段と、前記送水流量検出手段の
出力に基づいてポンプの吐出流量値を演算してその信号
を発生する吐出流量値発生手段と、前記ポンプ回転数検
出手段の出力に基づいてポンプの回転数平均値を演算し
その信号を発生する回転数平均値発生手段と、前記揚程
値、吐出流f甑および回転数平均値の各発生手段より得
られる実測値を入力してポンプ特性式に基づbてポンプ
特性理論値を演算するポンプ特性理論値演算手段と、前
記ポン/特性理論値演算手段によシ算出されたポンプ特
性理論値ξ前記揚程値、吐出流量値および回転数平均値
の各発生手段よシ得られる実測値とを入力して前記理論
値と実測値との比較を行い得られた差分量よシ実測値の
異常を判別するポンプ特性異常判別手段と、前記ポンプ
特性異常判別手段の出力に基づいて異常警報を・出力す
る異常警報出力手段とからなるポンプ運転状態監視装置
。 位」 特許請求の範囲第1項記載のポンプ運転状態監視
装置忙おいて、ポンプ特性理論値演算手段は、次式 %式% (但し、hけ揚程値、qは吐出流量値、nは回転数平均
値、A−Eはポンプの機械的特性定数である。) で示されるポンプ特性式に、前記揚程値、吐出流量値、
回転数平均値のうち2つの値を代入して他の値を理論値
として演算する演算回路で構成してなるポンプ運転状態
監視装置。 (6)特許請求の範囲第1項記載のポンプ運転状態監視
装置において、ポンプ特性異常判別手段は、揚程値、吐
出流量値および回転数平均値につきそ九ぞれ対応する理
論値と実測値とを比較し、各実測値の異常を個別に判別
し、この判別結果に基づいて各実測値に対する異常警報
出力手段を付勢するよう構成してなるポンプ運転状態監
視装置。
[Scope of Claims] (1) Water level detection means for detecting the water level of the reservoir, water pressure detection means for detecting the pressure of water sent from the pump equipment, and detection of the flow rate of the water sent from the pump equipment. A water supply flow rate detection means, a pump rotation speed detection means of the pump equipment, and a head value generation means for calculating a pump head value based on the output of the water level detection means and the output of the water supply pressure detection means and generating a signal thereof. , a discharge flow rate value generation means for calculating a discharge flow rate value of the pump based on the output of the water supply flow rate detection means and generating a signal thereof; and a discharge flow rate value generating means for calculating a pump discharge flow rate value based on the output of the water supply flow rate detection means, and an average value of the rotation speed of the pump based on the output of the pump rotation speed detection means. A rotation speed average value generation means for calculating and generating a signal thereof, and actual measured values obtained from each generation means for the head value, discharge flow f, and rotation speed average value are input, and the pump is adjusted based on the pump characteristic formula. a theoretical pump characteristic value calculating means for calculating a theoretical characteristic value, and a pump characteristic theoretical value ξ calculated by the pump/characteristic theoretical value calculating means, each generating means for the head value, discharge flow rate value, and rotation speed average value. A pump characteristic abnormality determining means inputs the obtained actual measured value and compares the theoretical value and the actual measured value to determine an abnormality in the actual measured value from the obtained difference amount, and an output of the pump characteristic abnormality determining means A pump operating state monitoring device comprising an abnormality alarm output means for outputting an abnormality alarm based on. In the pump operating state monitoring device recited in claim 1, the pump characteristic theoretical value calculating means is calculated by the following formula % formula % (where h is the head value, q is the discharge flow rate value, and n is the rotation (number average value, A-E is the mechanical characteristic constant of the pump).
A pump operating state monitoring device comprising an arithmetic circuit that substitutes two values out of the rotational speed average value and calculates the other value as a theoretical value. (6) In the pump operating state monitoring device according to claim 1, the pump characteristic abnormality determining means determines the corresponding theoretical values and actual measured values for the pump head value, the discharge flow rate value, and the rotational speed average value, respectively. A pump operating state monitoring device configured to compare the values, individually determine abnormalities in each actual measured value, and energize an abnormality alarm output means for each actual measured value based on the determination result.
JP3667583A 1983-03-08 1983-03-08 Device for monitoring state of operation of pump Pending JPS59162395A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3667583A JPS59162395A (en) 1983-03-08 1983-03-08 Device for monitoring state of operation of pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3667583A JPS59162395A (en) 1983-03-08 1983-03-08 Device for monitoring state of operation of pump

Publications (1)

Publication Number Publication Date
JPS59162395A true JPS59162395A (en) 1984-09-13

Family

ID=12476424

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3667583A Pending JPS59162395A (en) 1983-03-08 1983-03-08 Device for monitoring state of operation of pump

Country Status (1)

Country Link
JP (1) JPS59162395A (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03135499A (en) * 1989-10-23 1991-06-10 Gifushi Device for transporting dehydrated cake having wear detecting function
JPH0625580U (en) * 1991-02-27 1994-04-08 株式会社荏原製作所 Pump protector for pressurizer
WO1999051883A1 (en) * 1998-04-03 1999-10-14 Ebara Corporation Diagnosing system for fluid machinery
WO2007122697A1 (en) * 2006-04-18 2007-11-01 Mitsubishi Heavy Industries, Ltd. Performance diagnosing apparatus and system for fluid machine
JP2015149270A (en) * 2014-02-06 2015-08-20 現代自動車株式会社Hyundaimotor Company Cooling water state-determining method
CN104955257A (en) * 2014-03-26 2015-09-30 西门子公司 Emitter system
JP2017036669A (en) * 2015-08-06 2017-02-16 株式会社荏原製作所 Control device, control method and pump station
WO2017059897A1 (en) * 2015-10-07 2017-04-13 Abb Schweiz Ag High availability compressor for a gas compression system
DE102016208211B4 (en) 2015-10-23 2019-05-09 Hyundai Motor Company SYSTEM AND METHOD FOR DIAGNOSING A COOLING WATER CONDITION
US10947982B2 (en) 2014-02-06 2021-03-16 Hyundai Motor Company Method of determining circulation state of cooling water

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03135499A (en) * 1989-10-23 1991-06-10 Gifushi Device for transporting dehydrated cake having wear detecting function
JPH0625580U (en) * 1991-02-27 1994-04-08 株式会社荏原製作所 Pump protector for pressurizer
WO1999051883A1 (en) * 1998-04-03 1999-10-14 Ebara Corporation Diagnosing system for fluid machinery
JP3343245B2 (en) * 1998-04-03 2002-11-11 株式会社荏原製作所 Fluid machine diagnostic system
CN1128930C (en) * 1998-04-03 2003-11-26 株式会社荏原制作所 Diagnosing system for fluid machinery
US7996183B2 (en) 2006-04-18 2011-08-09 Mitsubishi Heavy Industries, Ltd. Performance monitoring apparatus and system for fluid machinery
WO2007122697A1 (en) * 2006-04-18 2007-11-01 Mitsubishi Heavy Industries, Ltd. Performance diagnosing apparatus and system for fluid machine
JP2015149270A (en) * 2014-02-06 2015-08-20 現代自動車株式会社Hyundaimotor Company Cooling water state-determining method
DE102014218786B4 (en) 2014-02-06 2019-05-02 Hyundai Motor Company METHOD OF DETERMINING THE CIRCULATION CONDITION OF COOLING WATER
US10947982B2 (en) 2014-02-06 2021-03-16 Hyundai Motor Company Method of determining circulation state of cooling water
CN104955257A (en) * 2014-03-26 2015-09-30 西门子公司 Emitter system
JP2017036669A (en) * 2015-08-06 2017-02-16 株式会社荏原製作所 Control device, control method and pump station
WO2017059897A1 (en) * 2015-10-07 2017-04-13 Abb Schweiz Ag High availability compressor for a gas compression system
DE102016208211B4 (en) 2015-10-23 2019-05-09 Hyundai Motor Company SYSTEM AND METHOD FOR DIAGNOSING A COOLING WATER CONDITION

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