JPS58165019A - Monitoring device for vibration of rotary machine - Google Patents

Monitoring device for vibration of rotary machine

Info

Publication number
JPS58165019A
JPS58165019A JP4718382A JP4718382A JPS58165019A JP S58165019 A JPS58165019 A JP S58165019A JP 4718382 A JP4718382 A JP 4718382A JP 4718382 A JP4718382 A JP 4718382A JP S58165019 A JPS58165019 A JP S58165019A
Authority
JP
Japan
Prior art keywords
rotary machine
vibration
starting
stopping
alarm
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
JP4718382A
Other languages
Japanese (ja)
Inventor
Masuo Furudono
益夫 古殿
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP4718382A priority Critical patent/JPS58165019A/en
Publication of JPS58165019A publication Critical patent/JPS58165019A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H1/00—Measuring characteristics of vibrations in solids by using direct conduction to the detector
    • G01H1/003—Measuring characteristics of vibrations in solids by using direct conduction to the detector of rotating machines

Abstract

PURPOSE:To enable to perform a monitoring excluding an unstable vibration condition at a starting and a stopping time from decision of a trouble, by a method wherein, in a device which decides a trouble on a rotary machine based on a condition amount of vibration, a starting and a stopping signal of a controller for the rotary machine is utilized. CONSTITUTION:An operating condition of a rotary machine 1 is detected by vibration detectors 3a-3n, the result is amplified by amplifiers 4a-4n, and after an unnecessary signal is removed by filters 5a-5n, the result is inputted through an A/D converter 6 to a processor 7 where various processings are conducted to output results to a display device 8. In case a trouble occurs, an alarm is issued by an alarm device 9. In case vibration is monitored, an operation to suspend a processing only during a time matching with the properties of the rotary machine is performed at a starting and a stopping time by means of an ON and OFF signal from a controller 2. This permits the rotary machine to be brought under a monitoring condition for the duration of a time during which the rotary machine is unstable in terms of vibration at a starting and a stopping times of the rotary machine, and prevents an unnecessary alarm from being sounded.

Description

【発明の詳細な説明】 本発明は回転機−の振動監視を行う一般の装置に係シ、
特に起動後定格回転数に到達する時間の□短い回転機械
の異常監視に好適な一転機械の振動監視装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a general device for monitoring vibrations of rotating machines.
In particular, the present invention relates to a vibration monitoring device for single-turn machines that is suitable for monitoring abnormalities in rotating machines that take a short time to reach the rated rotational speed after startup.

従来の回転機械の振動監視装置は、第１図に示すように
、回転機械ｌの動作状態を振動検出器３ａ〜３ｎで検出
し、アンプ４８〜４ｎで信号を増幅しフィルタ５ａ〜５
ｎで不要な信号を除去した後、ＡＤ変換器６を介して処
理装置７に取込み、種々の処理を行い結果を表示装置８
に出力してぃた。また、何らかの異常が発生した場合は
警報装置９によ、０１１報を発する方式である。しかし
、従来の振動監視装置では、起動後定格回転数に到達す
る時間の短い回転機械を監視する場合でも通常の異常判
定を行うため、起動時の振動的に不安定な状態を異常と
判定し、警報を発するという欠点があった。これらは、
振動監視装置の起動を回転機械が定格回転数に達してか
ら行い、回転機械を停止する直前に振動監視装置を停止
させることで対撚することができる。しかし、″複数台
の回シ機械を監視する場合は対撚できない。また、立上
がシの急な回転機械と立上がシの遅い回転機械か混在す
る場合は、後者は起動中も監視をする必要があシ、第１
図に示す従来の振動監視装置では対処できなかった。As shown in FIG. 1, a conventional vibration monitoring device for a rotating machine detects the operating state of the rotating machine l using vibration detectors 3a to 3n, amplifies the signals using amplifiers 48 to 4n, and transmits the signals to filters 5a to 5.
After removing unnecessary signals in step n, the signals are input to the processing device 7 via the AD converter 6, and various processing is performed, and the results are displayed on the display device 8.
It was output to . Furthermore, if any abnormality occurs, the alarm device 9 issues a 011 message. However, conventional vibration monitoring devices make normal abnormality judgments even when monitoring rotating machinery that takes a short time to reach the rated rotational speed after startup, so vibrationally unstable conditions at the time of startup are judged as abnormal. , it had the disadvantage of issuing an alarm. these are,
Twisting can be achieved by starting the vibration monitoring device after the rotating machine reaches its rated rotational speed and stopping the vibration monitoring device immediately before stopping the rotating machine. However, when monitoring multiple rotary machines, twist pairing is not possible.Also, if there are rotating machines that start up quickly and machines that start up slowly, the latter can be monitored even during startup. First, you need to
The conventional vibration monitoring device shown in the figure could not deal with this problem.

本発明の目的は、複数台の回転機械を同時に監視し得る
振動監視装置を提供することにある。An object of the present invention is to provide a vibration monitoring device that can simultaneously monitor a plurality of rotating machines.

本発明の特徴とするところは回転機械の振動を検出し、
振動の状態量によ多回転機械の異常を判定する装置にお
いて、回転機械の制御装置の起動・停止信号を利用する
ととくよシ、起動・停止時の不安率な振動状態を異常判
定よシ除いて監視を行うものである。The present invention is characterized by detecting vibrations of rotating machinery,
In a device that determines the abnormality of a multi-rotating machine based on the state quantity of vibration, it is possible to use the start/stop signal of the control device of the rotating machine, and to exclude the unstable vibration state at the time of starting/stopping. It is for monitoring.

以下、本発明の一実施例を第２図によシ説明する。第２
図は第１図と同様に１回転機械ｌの動作状態を振動検出
器３ａ〜３ｎで検出し、アンプ４８〜４ｎで信号を増幅
しフィルタ５ａ〜５ｎで不要な信号を除去した後、ＡＤ
変換器６を介して処理装置７に取込み、種々の処理を行
い結果を表示装置８に出力する。また、何らかの異常の
際は警報装置９によシ警報を発する。なお、振動監視に
関しては、制御装置２のＯＮ、ＯＦＦ信号１０によシ起
動・停止時には回転機械の特性に合った時間だけ処理を
中断する等の処理の分岐を行う。An embodiment of the present invention will be explained below with reference to FIG. Second
In the figure, the operating state of the one-rotation machine l is detected by vibration detectors 3a to 3n, and after the signals are amplified by amplifiers 48 to 4n and unnecessary signals are removed by filters 5a to 5n, the AD
The data is taken into a processing device 7 via a converter 6, subjected to various processing, and the results are outputted to a display device 8. Further, in the event of any abnormality, the alarm device 9 issues an alarm. Regarding vibration monitoring, processing is branched such as interrupting processing for a time that matches the characteristics of the rotating machine when starting or stopping the machine, depending on the ON/OFF signal 10 of the control device 2.

本実施例によれば、振動監視装置は常時稼動していても
自由に回転機械φ１・′−動・停止が可能という効果が
ある。　　　　　−・″□ 上述の実施例では起動・停止時に回転数が急変する回転
機械を念願に置いているが、回転数が急変しない回転機
械が混在している場合で、回転数の変化中も監視を行う
条件のもとでも十分対処することができる。According to this embodiment, even if the vibration monitoring device is constantly operating, it is possible to freely move and stop the rotating machine φ1.'. −・″□ In the above embodiment, the aim is to use rotating machines whose rotational speed changes suddenly when starting or stopping, but if there are also rotating machines whose rotational speed does not change suddenly, it is necessary to monitor them even when the rotational speed is changing. It is possible to adequately cope with this situation even under the conditions of doing so.

本発明によれば、回転機械の起動・停止時の振動的に不
安定な時間を無監視にできるので不用意に警報を発する
ことがないという効果がある。また、複数台の回転機械
を同時に監視する場合でもある一台または数台を起動・
停止しても同様の効果がある。According to the present invention, since the vibrationally unstable time when starting and stopping a rotating machine can be left unmonitored, there is an effect that an alarm is not issued inadvertently. It is also possible to start up one or several rotating machines and monitor multiple rotating machines at the same time.
The same effect can be achieved even if it is stopped.

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

第１図は従来の回転機械の振動監視装置のブロック線図
、第２図は本発明の回転機械の振動監視装置のブロック
線図である。 １・・・回転機械、２・・・制御装置、３ａ〜３ｎ・・
・振動検出器、４ａ〜４ｎ・・・アンプ、５Ｊ１〜５ｎ
・・・フィルタ、６・・・ＡＤｆｆｉ換器、７・・・処
理装置、訃・・表示装置、９・・・警報ｉ：置、ｌＯ・
・・制御装置のＯＮ。 ＯＦＦ信号。　　□・。 ′ｆ１１　図 Ｖｌ　２　図 ■FIG. 1 is a block diagram of a conventional vibration monitoring device for a rotating machine, and FIG. 2 is a block diagram of a vibration monitoring device for a rotating machine according to the present invention. 1...Rotating machine, 2...Control device, 3a-3n...
・Vibration detector, 4a~4n...Amplifier, 5J1~5n
... Filter, 6 ... ADffi exchanger, 7 ... Processing device, Death ... Display device, 9 ... Alarm i: position, lO.
...Turn on the control device. OFF signal. □・. 'f11 Figure Vl 2 Figure■

Claims (1)

【特許請求の範囲】[Claims] 回転機械の振動を検出し、振動の状態量にょ多回転機械
の異常を判定する装置において、回転機械の制御装置の
起動・停止信号を利用するととＫよシ、起動・停止時の
不安定な振動状態を異常判定よシ除いて監視を行うこと
を特徴とする回転機械の振動監視装置。In a device that detects vibrations in rotating machines and determines abnormalities in multi-rotating machines based on the state quantity of vibrations, using the start/stop signals of the rotating machine's control device will help prevent instability during starting/stopping. A vibration monitoring device for a rotating machine, characterized in that it monitors the vibration state by determining whether it is abnormal or not.
JP4718382A 1982-03-26 1982-03-26 Monitoring device for vibration of rotary machine Pending JPS58165019A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4718382A JPS58165019A (en) 1982-03-26 1982-03-26 Monitoring device for vibration of rotary machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4718382A JPS58165019A (en) 1982-03-26 1982-03-26 Monitoring device for vibration of rotary machine

Publications (1)

Publication Number Publication Date
JPS58165019A true JPS58165019A (en) 1983-09-30

Family

ID=12767968

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4718382A Pending JPS58165019A (en) 1982-03-26 1982-03-26 Monitoring device for vibration of rotary machine

Country Status (1)

Country Link
JP (1) JPS58165019A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6159221A (en) * 1984-08-31 1986-03-26 Hitachi Ltd Method for measuring vibration of high speed rotary machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6159221A (en) * 1984-08-31 1986-03-26 Hitachi Ltd Method for measuring vibration of high speed rotary machine

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