JPS6128101A - Pump supervisory controller - Google Patents

Pump supervisory controller

Info

Publication number
JPS6128101A
JPS6128101A JP14760484A JP14760484A JPS6128101A JP S6128101 A JPS6128101 A JP S6128101A JP 14760484 A JP14760484 A JP 14760484A JP 14760484 A JP14760484 A JP 14760484A JP S6128101 A JPS6128101 A JP S6128101A
Authority
JP
Japan
Prior art keywords
pump
pressure
program
value
state
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
JP14760484A
Other languages
Japanese (ja)
Inventor
Katsuya Kobayashi
克弥 小林
Kiyoto Yoshino
吉野　清人
Keiichi Yamamoto
啓一 山本
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP14760484A priority Critical patent/JPS6128101A/en
Publication of JPS6128101A publication Critical patent/JPS6128101A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0218—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterised by the fault detection method dealing with either existing or incipient faults
    • G05B23/0224—Process history based detection method, e.g. whereby history implies the availability of large amounts of data
    • G05B23/0227—Qualitative history assessment, whereby the type of data acted upon, e.g. waveforms, images or patterns, is not relevant, e.g. rule based assessment; if-then decisions
    • G05B23/0235—Qualitative history assessment, whereby the type of data acted upon, e.g. waveforms, images or patterns, is not relevant, e.g. rule based assessment; if-then decisions based on a comparison with predetermined threshold or range, e.g. "classical methods", carried out during normal operation; threshold adaptation or choice; when or how to compare with the threshold
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B23/00—Testing or monitoring of control systems or parts thereof
    • G05B23/02—Electric testing or monitoring
    • G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
    • G05B23/0259—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the response to fault detection
    • G05B23/0286—Modifications to the monitored process, e.g. stopping operation or adapting control

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Safety Devices In Control Systems (AREA)
  • Control Of Fluid Pressure (AREA)

Abstract

PURPOSE:To attain efficient operation control corresponding quickly to a pressure fault at operation and start by detecting a faulty state when a pressure value is at the outside of a permissibe value and no pressure change exists in a pressure change waiting time at start. CONSTITUTION:A state signal of a pump 11 is inputted by a program 23, and a present prrssure value of a pressure sensor 13 is inputted by a program 21 and a program 22 checks the propriety. A program 24 applies pressure change wait processing when the pump 11 is in operation and the running start is executed this time depending on the result of the program 22 and the operating state of the program 23, and when no pressure rise is obtained or a pressure under operation and the operation is not started this time is at the outside of the permissible value, it is detected as a faulty state. When the faulty state is detected by the program 24, a program 25 raises an alarm command, a stop control command is transmitted to an operation circuit 10, and the circuit 10 transmits an operation stop signal to the pump 11. Thus, the supervisory control of the pump 11 is attained.

Description

【発明の詳細な説明】 〔発明の技術分野〕 本発明はポンプの起動時及び運転中にその圧力状態を常
時監視し、ポンプの自動制御を行なうポンプ監視制御装
置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a pump monitoring and control device that constantly monitors the pressure state of a pump during startup and operation, and automatically controls the pump.

〔発明の技術的背景と問題点〕[Technical background and problems of the invention]

従来、ポンプ給水設備においては、ポンプの運転による
供給状態を圧力センサ口て監視し、吐出側の圧力が予定
値以上上昇した場合に、ポンプの運転を停止する方式が
とられている。BACKGROUND ART Conventionally, in pump water supply equipment, a system has been adopted in which the supply status due to the operation of the pump is monitored using a pressure sensor port, and when the pressure on the discharge side rises beyond a predetermined value, the operation of the pump is stopped.

！Ｊ８図は、ポンプ給水設備を表わしており、１１はポ
ンプで吐出側に弁１２を設は給水管１４を介して図示し
ない使用者側に給水する。１０は運転回路を表わし、ポ
ンプの人、切信号を出力する。１３は圧力センサを表わ
し、吐出側である給水管１４の圧力の測定を行ない、一
定レベルより上昇した場合、停止信号出力回路１５（＝
よってポンプの運転を停止させている。ところがこのよ
うな方法では、以下に説明するような問題がある。! Fig. J8 shows a pump water supply equipment, in which a pump 11 has a valve 12 on its discharge side and supplies water to a user (not shown) via a water supply pipe 14. 10 represents an operating circuit which outputs a pump cut signal. 13 represents a pressure sensor, which measures the pressure of the water supply pipe 14 on the discharge side, and when the pressure rises above a certain level, a stop signal output circuit 15 (=
Therefore, the operation of the pump is stopped. However, such a method has problems as described below.

圧力の上昇だけしか判定しておらず圧力が低下する現象
、つまりキャビテーション（空気の吸い込み）及びポン
プ起動時に圧力発生なし状態となる水落ち（ポンプ内に
水がなく吸い上けられない）が発生した場合、早期にこ
れを検出し、ポンプな伴出制御しなければならないが、
このような検出および制御ができず、ポンプ給水設備の
省エネ上、また機器の保守上の問題を招いていた。もち
ろん専用の検出装置を設けておけば、これらの問題は解
決するが、それでは装置全体が複雑化するし前述した圧
力Ｃ二よる制御とは区別されたものになってしまい、監
視制御上好ましくない。Phenomenon where only the pressure increase is determined and the pressure decreases, that is, cavitation (air suction) and water drop (no water is generated in the pump and cannot be sucked up) occur when the pump is started. If this occurs, it must be detected early and the pump entrainment controlled.
Such detection and control have not been possible, leading to problems in terms of energy conservation of pump water supply equipment and maintenance of equipment. Of course, these problems could be solved by providing a dedicated detection device, but this would complicate the entire device and make it different from the pressure C2 control described above, which is not desirable in terms of monitoring control. .

〔発明の目的〕[Purpose of the invention]

本発明の目的は、ポンプの通常運転時はもちろん、起動
時における圧力異常に対して速い対応力を持ち、効率的
な運転制御を可能とした、ポンプ監視制御装置を提供す
るにある。SUMMARY OF THE INVENTION An object of the present invention is to provide a pump monitoring and control device that can quickly respond to pressure abnormalities not only during normal operation of the pump but also at startup, and which enables efficient operation control.

〔発明の概要〕[Summary of the invention]

本発明によるポンプ監視制御装置は、１２図で示すよう
に、ポンプが起動中か通常の運転状態かを判断する手段
ａと、ポンプが起動中の場合予め設定した時間後におけ
る吐出側の圧力が予定値に達しているかを判断する第１
の圧力判定手断すと、前記ポンプが通常の運転状態の場
合その吐出側の圧力が予定範囲（二人っているかを判断
する第２の圧力判定手断Ｃと、前記第１の圧力判定手［
ｂ＋二よる予定値に達していないとの判断または第２の
圧力判定手断Ｃによる予定範囲に達していないとの判断
により異常発生と判断し異常処理を行う手段ｄとを備え
たもので、ポンプ起動時の水落ちやキャビテーションに
よる圧力異常を第１の圧力判定手断すにより検出し、通
常運転時における圧力異常を第２の圧力判定手断Ｃによ
り検出し、異常処理手段ｄにより警報やポンプの停止制
御等の異常処理を行うものである。As shown in Fig. 12, the pump monitoring and control device according to the present invention includes a means a for determining whether the pump is starting up or in a normal operating state, and a means a for determining whether the pump is starting up or in a normal operating state, and a means for determining the pressure on the discharge side after a preset time when the pump is starting up. The first step is to determine whether the planned value has been reached.
When the pressure judgment is made, when the pump is in a normal operating state, the pressure on the discharge side is within the expected range (a second pressure judgment judgment C to judge whether there are two people), and the first pressure judgment hand[
It is equipped with a means d for determining that an abnormality has occurred and processing the abnormality by determining that the scheduled value has not been reached based on b+2 or that the scheduled range has not been reached based on the second pressure determination hand cut C, Pressure abnormalities due to water dripping or cavitation when the pump is started are detected by the first pressure judgment hand cut, pressure abnormalities during normal operation are detected by the second pressure judgment hand cut C, and the abnormality processing means d is used to issue an alarm or the like. It performs abnormality processing such as pump stop control.

〔発明の実施例〕[Embodiments of the invention]

以下図面に示す一実施例に従って本発明の詳細な説明す
る。なお、ポンプ１１による給水系統は従来と同じであ
り、対応する部分に同一符号を付し説明は省略する。第
１図は本発明に係るポンプ監視制御装置のブロック図で
、図中２０は制御用計算機２１．２２．２３．２４．２
５はそれぞれ制御用計算機２０のソフトウェアブロック
を示すもので、２１は圧力センサからのアナログ量を入
力するプログラム、２２は操作パネル３０より設定され
たデータに従いアナログ値の判定を行なう、入力データ
の妥当性判定のプログラム、詔はポンプの運転状態を入
力するプログラム、２４はプログラム２２及びプログラ
ム２３からの出力データにより異常状態の検出を行なう
プログラム、５はプログラムあからの出力データ（二よ
り、ポンプに対する制御出力を行なうプログラムである
。３０は操作パネルで、後述する各種設定値の設定操作
を行うためのものである。The present invention will be described in detail below according to an embodiment shown in the drawings. Note that the water supply system using the pump 11 is the same as the conventional one, and corresponding parts are given the same reference numerals and explanations will be omitted. FIG. 1 is a block diagram of a pump monitoring and control device according to the present invention, and 20 in the figure is a control computer 21, 22, 23, 24, 2.
5 indicates a software block of the control computer 20, 21 is a program for inputting an analog value from a pressure sensor, and 22 is a program for determining the analog value according to data set from the operation panel 30. 24 is a program that detects abnormal conditions based on the output data from programs 22 and 23, and 5 is the output data from program Akara (from 2) This is a program for performing control output. Reference numeral 30 denotes an operation panel for performing setting operations for various setting values, which will be described later.

次に第１図に示したポンプ監視制御装置の動作を説明す
る。まずポンプ１１から運転中でちるかどうかの状態信
号をプｐダラム詔にて入力する。それと伴に、圧力セン
サ１３から、現在の圧力値をプログラム２１で人力する
。プログラム２１で入力されり値は、プログラム２２に
おいて、すで：；操作パネルからオペレータにより設定
された不感帯なもつ上限値及び下限値で、妥当性のチェ
ックを行なう。Next, the operation of the pump monitoring and control device shown in FIG. 1 will be explained. First, a status signal indicating whether to shut down during operation is input from the pump 11 using a pudaram edict. At the same time, the current pressure value is manually input from the pressure sensor 13 using the program 21. The values entered in the program 21 are checked for validity in the program 22 using the upper and lower limit values of the dead zone set by the operator from the operation panel.

プログラム２２で祷られた結果と、プログラムおで得ら
れたポンプの運転状態からプログラム２４で次の判断を
行う。すなわち、ポンプが運転中でかつ、今回ポンプの
運転開始が行なわれた場合に、圧力亦ル絢’Ｃ＋　ｍ　
ａｍ　ｔ−粁’？？　１．％　　ＥＸ：　＋ｌ　ｈＬ　
３１　Ｊｔ　１１Ｃ−４ｑ　ｆｐ　ｄｈｈつた時、異常
状態と検出する。甘た運転中であり、今回ポンプの運転
開始でない場合には、圧力が許容値内であるか判定し、
許容値外でおった時、異常状態と検出する。プログラム
２４で異常状態が検出されると、プログラム５は異常処
理を実行し、警報指令を発したり、運転回路１０ｉ二対
し停止制御指令を送る。そして運転回路１０は、ポンプ
１１に対し、運転、停止の信号を送る。、その結果、ポ
ンプ１１の監視制御を行うことができる。The next determination is made in the program 24 based on the result expected in the program 22 and the operating state of the pump obtained by the program. In other words, if the pump is in operation and the pump is started this time, the pressure + + m
am t-ka'? ? 1. %EX: +l hL
31 Jt 11C-4q fp dhh When it occurs, it is detected as an abnormal state. If the pump is running slowly and the pump is not starting at this time, determine whether the pressure is within the allowable value.
When the value is outside the allowable value, it is detected as an abnormal condition. When an abnormal state is detected by the program 24, the program 5 executes abnormality processing, issues an alarm command, and sends a stop control command to the operating circuit 10i2. The operation circuit 10 then sends operation and stop signals to the pump 11. As a result, the pump 11 can be monitored and controlled.

第２図は１５１図（二示したポンプ監視制御装置におけ
る異常状態検出処理プログラム飼の処理を説明する為の
フローチャートで必る。ステップ１（二おいて、現在ポ
ンプが運転中でおることを確認する。この為このプログ
ラムは、一定周期で実行する必要があり、停止中の場合
はそのまま終了する。Figure 2 is a flowchart for explaining the abnormal state detection processing program in the pump monitoring and control device shown in Figure 151 (2).In step 1 (2), confirm that the pump is currently in operation. For this reason, this program must be executed at regular intervals, and if it is stopped, it will terminate immediately.

運転中と判定したら、ステップ２で今回ポンプ１１が運
転を開始したかを確認する。ステップ２今回運転開始し
た（起動中）と判定した場合は、ステップ８で操作パネ
ルで設定された待ち時間の間、圧力の変化を調べる。つ
ぎにステップ４で上記予定の待ち時間の後において、圧
力が上昇したかを判定する。この結果、予定値まで圧力
上昇したと判定した場合には、そのまま終了する。また
上記結果、上昇していないと判定した場合にはステップ
５で、異常状態処理を行ない終了する。一方、先はどの
ステップ２で今回ポンプの運転が開始でない（通常の運
転中である）と判定した場合（二はステップ６で圧力が
操作パネルより予め設定しである許容値内か否かを判断
し、内である場合にはその−ｉｔ終了し、圧力が許容値
内（二人っていない場合にはステップ５で異常状態処理
を行ない終了する。If it is determined that the pump 11 is in operation, it is checked in step 2 whether the pump 11 has started operating this time. Step 2 If it is determined that the current operation has started (starting up), then in step 8 the change in pressure is checked during the waiting time set on the operation panel. Next, in step 4, after the above scheduled waiting time, it is determined whether the pressure has increased. As a result, if it is determined that the pressure has increased to the scheduled value, the process ends immediately. Further, if it is determined that the temperature has not increased as a result of the above, in step 5, abnormal state processing is performed and the process ends. On the other hand, in which step 2 is it determined that the pump has not started operating this time (it is in normal operation)? If the pressure is within the allowable value (if there are not two people, abnormal state processing is performed in step 5 and the process ends).

なお、前記許容値や圧力変化待ち時間等は、給水設備の
形状や負荷状況に対応できるよう（二、第１図で示した
操作パネル３０から任意に設定変更できる。Note that the allowable value, pressure change waiting time, etc. can be changed arbitrarily from the operation panel 30 shown in FIG. 1 so as to correspond to the shape and load situation of the water supply equipment.

以上述べたよう；二、異常状態処理処１１２４を設ける
ことにより、ポンプの適性な運転が可能となりポンプ給
水設備の効率的な運用を行なうことができる。As described above; 2. By providing the abnormal condition processing section 1124, the pump can be operated appropriately, and the pump water supply equipment can be operated efficiently.

〔発明の効果〕〔Effect of the invention〕

以上述べた如く、本発明は圧力値が許荏値外になった場
合及びポンプを起動させて、圧力変化待ち時間内に圧力
の変化が見られなかった場合に、異常状態を検出するよ
う構成されており、不必要なポンプの運転を防止し、省
エネ上、保守上、大いに役立つポンプ監視制御装置を得
ることができる。As described above, the present invention is configured to detect an abnormal state when the pressure value falls outside the permissible value and when the pump is started and no pressure change is observed within the pressure change waiting time. Therefore, it is possible to obtain a pump monitoring and control device that prevents unnecessary operation of the pump and is very useful in terms of energy saving and maintenance.

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

第１図は、本発明ｌ二よるポンプ監視制御装置の一実施
例を示すブロック図、第２図は本発明の詳細な説明する
フローチャート、第８図は従来のポンプ給水設備のブロ
ック図である。 ２０・・・制御用計算機 ２１、２２．２３．２４．２５・・・ソフトウェアブロ
ック（９）・・・操作パネル １０・・・運転回路 １１・・・ポンプ １２・・・バルブ １３・・・圧力上ンサ １４・・・給水管 （７８１７）代理人　弁理士　則　近　憲　佑　（ほか
１名）第１図 第２図 第３図 バFIG. 1 is a block diagram showing an embodiment of a pump monitoring and control device according to the present invention, FIG. 2 is a flow chart explaining the present invention in detail, and FIG. 8 is a block diagram of a conventional pump water supply equipment. . 20... Control computer 21, 22.23.24.25... Software block (9)... Operation panel 10... Operating circuit 11... Pump 12... Valve 13... Pressure Above 14... Water supply pipe (7817) Agent Patent attorney Kensuke Chika (and 1 other person) Figure 1 Figure 2 Figure 3

Claims (1)

【特許請求の範囲】[Claims] ポンプ起動中か通常の運転状態かを判断する手段と、ポ
ンプが起動中の場合予め設定した時間後における吐出側
の圧力が予定値に達しているかを判断する第１の圧力判
定手断と、前記ポンプが通常の運転状態の場合その吐出
側の圧力が予定範囲に入っているかを判断する第２の圧
力判定手段と、前記第１の圧力判定手段による予定値に
達していないとの判断または第２の圧力判定手段による
予定範囲に達していないとの判断により異常発生と判断
し異常処理を行う手段とを備えたポンプ監視制御装置。means for determining whether the pump is starting or in a normal operating state; and a first pressure determination device for determining whether the pressure on the discharge side has reached a predetermined value after a preset time when the pump is starting. a second pressure determination means for determining whether the pressure on the discharge side of the pump is within a predetermined range when the pump is in a normal operating state; and a determination by the first pressure determination means that the predetermined value has not been reached; A pump monitoring and control device comprising means for determining that an abnormality has occurred based on a determination by a second pressure determining means that the predetermined range has not been reached, and performing abnormality processing.
JP14760484A 1984-07-18 1984-07-18 Pump supervisory controller Pending JPS6128101A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14760484A JPS6128101A (en) 1984-07-18 1984-07-18 Pump supervisory controller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14760484A JPS6128101A (en) 1984-07-18 1984-07-18 Pump supervisory controller

Publications (1)

Publication Number Publication Date
JPS6128101A true JPS6128101A (en) 1986-02-07

Family

ID=15434082

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14760484A Pending JPS6128101A (en) 1984-07-18 1984-07-18 Pump supervisory controller

Country Status (1)

Country Link
JP (1) JPS6128101A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0224705A (en) * 1988-07-14 1990-01-26 Rika Kogyo Kk Abnormality detector for control loop system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0224705A (en) * 1988-07-14 1990-01-26 Rika Kogyo Kk Abnormality detector for control loop system

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