JPH0325151Y2 - - Google Patents
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- Publication number
- JPH0325151Y2 JPH0325151Y2 JP2410885U JP2410885U JPH0325151Y2 JP H0325151 Y2 JPH0325151 Y2 JP H0325151Y2 JP 2410885 U JP2410885 U JP 2410885U JP 2410885 U JP2410885 U JP 2410885U JP H0325151 Y2 JPH0325151 Y2 JP H0325151Y2
- Authority
- JP
- Japan
- Prior art keywords
- vibration
- axis
- signal
- rotation
- rotating
- 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
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Description
【考案の詳細な説明】
〔産業上の利用分野〕
この考案は、２軸ガスタービンや歯車増減速機
など、複合回転体をもつ回転機械の振動監視計器
において、相手の回転体の主たる振動成分を除去
するようにした振動検出器に関する。[Detailed description of the invention] [Industrial application field] This invention is used in vibration monitoring instruments for rotating machines with complex rotating bodies, such as two-shaft gas turbines and gear speed reducers, to detect the main vibration component of the other rotating body. The present invention relates to a vibration detector that eliminates.
従来、一つの架台の上に複数の回転をもつ回転
体と回転体などを有する回転機械において、通常
多用される軸受箱振動計を設置した場合、通常大
きい方の回転体（低速軸）の不つり合いによる軸
受動荷重は小さい方の回転体の不つり合いによる
軸受動荷重よりも大きいことが多い。
Conventionally, when a bearing box vibration meter, which is commonly used in a rotating machine that has multiple rotational bodies and rotary bodies on one stand, is installed, the failure of the larger rotating body (low-speed shaft) is usually detected. The shaft passive load due to balance is often larger than the shaft passive load due to unbalance of the smaller rotating body.
したがつて、小さい方の回転体側の軸受箱振動
を測定すると、大きい方の回転体側に起因する振
動成分が大部分であつたということになり、小さ
い方の回転体側の異常検出のために設置した振動
計が役に立たないということがある。
Therefore, when measuring the vibration of the bearing box on the side of the smaller rotating body, most of the vibration components were caused by the side of the larger rotating body. There are times when a vibration meter that has been used is of no use.
また、逆に小さい方の回転体の振動が大きく、
低速側（大きい方の回転体）の軸受箱振動に影響
を与えて振動監視を困難にすることもある。 Also, on the contrary, the vibration of the smaller rotating body is large,
This may affect the vibration of the bearing box on the low speed side (larger rotating body), making vibration monitoring difficult.
この考案は、上記従来の欠点を除去するために
なされたもので、適切な各軸受の振動監視が可能
であるとともに、歯車軸など、高調波の多い複合
回転体をもつ機械でも適用できる振動検出器を提
供することを目的とする。 This idea was made to eliminate the above-mentioned drawbacks of the conventional technology, and it not only makes it possible to appropriately monitor the vibration of each bearing, but also enables vibration detection that can be applied to machines with complex rotating bodies with many harmonics, such as gear shafts. The purpose is to provide equipment.
この考案の振動検出器は、被計測対象の回転機
械の振動を計る振動計手段と、他の回転機械の回
転数を計る回転計手段と、振動計手段の出力から
回転計手段で計測された回転数成分を除去する除
去手段を設けたものである。
The vibration detector of this invention includes a vibration meter means for measuring the vibration of a rotating machine to be measured, a tachometer means for measuring the rotation speed of another rotating machine, and a tachometer means that measures the vibration from the output of the vibration meter means. A removing means for removing the rotational speed component is provided.
この考案は、振動計手段で被測定対象の回転機
械の振動を計り、回転計測手段で他の回転機械の
回転数を計り、除去手段で振動計の出力から回転
計測手段で計測された回転数成分を除去する。
This device uses a vibration meter to measure the vibration of a rotating machine to be measured, a rotation measuring device to measure the number of rotations of another rotating machine, and a removing device to calculate the number of rotations measured by the rotation measuring device from the output of the vibration meter. Remove ingredients.
以下、この考案の振動検出器の実施例について
図面に基づき説明する。第１図はその一実施例の
構成を示すブロツク図である。この第１図におい
て、１は複合回転体をもつ回転機械であり、この
回転機械１はＡ回転軸２とＢ回転軸３が異なつた
回転数で運転されるようになつている。
Hereinafter, embodiments of the vibration detector of this invention will be described based on the drawings. FIG. 1 is a block diagram showing the configuration of one embodiment. In FIG. 1, reference numeral 1 denotes a rotating machine having a composite rotating body, and this rotating machine 1 is designed so that an A rotating shaft 2 and a B rotating shaft 3 are operated at different rotational speeds.
Ａ回転軸２の振動はＡ軸受振動検出器４により
検出されるようになつている。このＡ軸受振動検
出器４の出力信号はＡ軸受振動信号増幅器１０お
よびＡ軸用ノツチトラツキングフイルタ１１を通
してＡ軸受振動レベル表示器および警報発信器１
２に送られるようになつている。 Vibrations of the A-rotating shaft 2 are detected by an A-bearing vibration detector 4. The output signal of this A-bearing vibration detector 4 is passed through an A-bearing vibration signal amplifier 10 and an A-axis notch tracking filter 11 to an A-bearing vibration level indicator and an alarm transmitter 1.
It is now being sent to 2.
同様にして、Ｂ軸受振動検出器５の出力信号は
Ｂ軸受振動信号増幅器１３、Ｂ軸用ノツチトラツ
キングフイルタ１４を通してＢ軸受振動レベル表
示器および警報発信器１５に送出するようになつ
ている。 Similarly, the output signal of the B-bearing vibration detector 5 is sent to the B-bearing vibration level indicator and alarm transmitter 15 through the B-bearing vibration signal amplifier 13 and the B-axis notch tracking filter 14.
一方、８はＡ軸回転基準信号発生円板、９はＢ
軸回転基準信号発生回路である。Ａ軸回転基準信
号発生円板８で発生した基準信号はＡ軸回転基準
信号検出器６で検出して、この検出信号をＢ軸ノ
ツチトラツキングフイルタ１４に送出するように
なつている。 On the other hand, 8 is the A-axis rotation reference signal generation disk, 9 is B
This is a shaft rotation reference signal generation circuit. The reference signal generated by the A-axis rotation reference signal generating disk 8 is detected by the A-axis rotation reference signal detector 6, and this detection signal is sent to the B-axis notch tracking filter 14.
同様にして、Ｂ軸回転基準信号発生円板９で発
生した基準信号はＢ軸回転基準信号検出器７で検
出して、この検出信号をＡ軸ノツチトラツキング
フイルタ１１に送出するようになつている。 Similarly, the reference signal generated by the B-axis rotation reference signal generation disk 9 is detected by the B-axis rotation reference signal detector 7, and this detection signal is sent to the A-axis notch tracking filter 11. There is.
次に、以上のように構成された第１図の実施例
の動作について説明するが、Ａ軸受系とＢ軸受系
との作用は同じであるから、Ａ軸系を代表して述
べることにする。 Next, the operation of the embodiment shown in FIG. 1 configured as above will be explained, but since the actions of the A-bearing system and the B-bearing system are the same, the A-axis system will be described as a representative. .
まず、複合回転体をもつ回転機械１において、
Ａ回転軸２の振動はＡ軸受振動検出器４で検出さ
れ、その振動の検出信号はＡ軸受振動信号増幅器
１０で所定のレベルに増幅する。 First, in a rotating machine 1 having a composite rotating body,
Vibration of the A-rotating shaft 2 is detected by an A-bearing vibration detector 4, and a detection signal of the vibration is amplified to a predetermined level by an A-bearing vibration signal amplifier 10.
このＡ軸受振動信号増幅器１０で増幅された振
動信号は波形Ｓ１として示されており、Ａ回転軸
２の振動のみならず、Ｂ回転軸３の振動も含まれ
ている。 The vibration signal amplified by this A-bearing vibration signal amplifier 10 is shown as a waveform S1, and includes not only the vibration of the A rotation shaft 2 but also the vibration of the B rotation shaft 3.
この振動信号はＡ軸用ノツチトラツキングフイ
ルタ１１に入力される。Ａ軸用ノツチトラツキン
グフイルタ１１はＢ軸回転基準信号発生円板９の
回転数に追従してＢ回転軸３の回転数成分を除去
する作用をもつフイルタであり、その中味はＢ回
転軸３相当の波形を引算するものやフイルタの周
波数を次々と変化させてゆくものなどがある。 This vibration signal is input to the A-axis notch tracking filter 11. The A-axis notch tracking filter 11 is a filter that has the function of following the rotation speed of the B-axis rotation reference signal generation disk 9 and removing the rotation speed component of the B rotation shaft 3. There are methods that subtract a corresponding waveform, and methods that change the frequency of a filter one after another.
Ａ軸用ノツチトラツキングフイルタ１１には、
Ｂ軸回転基準信号発生円板９で発生したＢ軸基準
信号をＢ軸回転基準信号検出器７で検出して加え
ており、したがつて、Ａ軸用ノツチトラツキング
フイルタ１１は上述したように、このＢ軸回転基
準信号発生円板９の回転数に追従してＡ軸受振動
信号増幅器１０の出力信号の周波数を変化させて
Ｂ回転軸３の回転数成分の振動を除去した信号Ｓ
２をＡ軸受振動レベル表示器および警報発信器１
２に出力する。 The A-axis notch tracking filter 11 includes
The B-axis rotation reference signal generated by the B-axis rotation reference signal generation disk 9 is detected and added to the B-axis rotation reference signal detector 7, and therefore the A-axis notch tracking filter 11 is configured as described above. , the frequency of the output signal of the A-bearing vibration signal amplifier 10 is changed in accordance with the rotation speed of the B-axis rotation reference signal generation disk 9 to remove the vibration of the rotation speed component of the B-axis rotation shaft 3.
2 to A bearing vibration level indicator and alarm transmitter 1
Output to 2.
第２図はこのＡ軸用ノツチトラツキングフイル
タ１１の入力側の信号Ｓ１と出力側の信号Ｓ２と
の関係を示したものであり、信号Ｓ１にはＡ回転
軸２の回転数の振動成分にＢ回転軸３の回転数の
振動成分が重畳されていたものが、Ａ軸用ノツチ
トラツキングフイルタ１１によりＢ回転軸３の回
転数の振動成分が除去され、大部分がＡ回転軸２
の回転数の振動成分となつていることを示してい
る。 Figure 2 shows the relationship between the input side signal S1 and the output side signal S2 of this A-axis notch tracking filter 11. The vibration component of the rotation speed of the B rotation shaft 3 was superimposed, but the vibration component of the rotation speed of the B rotation shaft 3 is removed by the A-axis notch tracking filter 11, and the vibration component of the rotation speed of the B rotation shaft 3 is mostly superimposed on the rotation speed of the A rotation shaft 2.
This shows that it is a vibrational component of the rotational speed.
このＡ軸用ノツチトラツキングフイルタ１１の
出力信号（信号波形Ｓ２）はＡ軸受振動レベル表
示器および警報発信器１２に送られ、そこでＡ回
転軸２の振動レベルが表示される。 The output signal (signal waveform S2) of the A-axis notch tracking filter 11 is sent to the A-bearing vibration level indicator and alarm transmitter 12, where the vibration level of the A-axis rotation shaft 2 is displayed.
なお、この第２図において、下段はＢ回転軸３
の系統を示し、それぞれ上段のＡ回転軸２の系統
に対応した信号Ｓ３，Ｓ４を示す。 In addition, in this Fig. 2, the lower part is the B rotation axis 3.
, and signals S3 and S4 respectively corresponding to the systems of the A rotating shaft 2 in the upper row are shown.
また、このＡ軸受振動レベル表示器および警報
発信器１２には、Ａ回転軸２の振動レベルが設定
値を越える高い値となつた場合、警報を発生する
機能を備えている。 The A-bearing vibration level indicator and alarm transmitter 12 also have a function of generating an alarm when the vibration level of the A-rotating shaft 2 exceeds a set value.
次に、この考案の第２の実施例について説明す
る。回転機械１として、回転数一定の機械につい
ては、Ａ軸用ノツチフイルタ１１、Ｂ軸用ノツチ
フイルタ１４の周波数は固定でよいので、第１図
の実施例において、回転基準信号を検出する系の
Ａ軸回転基準信号検出器６、Ｂ軸回転基準信号検
出器７、Ａ軸回転基準信号発生円板８、Ｂ軸回転
基準信号発生円板９が不要となる。 Next, a second embodiment of this invention will be described. If the rotating machine 1 has a constant rotational speed, the frequencies of the A-axis notch filter 11 and the B-axis notch filter 14 may be fixed, so in the embodiment shown in FIG. The shaft rotation reference signal detector 6, the B-axis rotation reference signal detector 7, the A-axis rotation reference signal generation disk 8, and the B-axis rotation reference signal generation disk 9 are no longer necessary.
また、Ａ軸用ノツチトラツキングフイルタ１
１、Ｂ軸用ノツチトラツキングフイルタ１４が周
波数固定のノツチフイルタとなることにより、大
幅に構成が簡略化される。その他の作用、効果は
第１図の実施例の場合と同様である。 In addition, the notch tracking filter 1 for the A-axis
1. Since the B-axis notch tracking filter 14 is a notch filter with a fixed frequency, the configuration is greatly simplified. Other functions and effects are similar to those of the embodiment shown in FIG.
次に、この考案の第３の実施例について説明す
る。この第３の実施例では、第１図に示した実施
例におけるＡ軸用ノツチトラツキングフイルタ１
１とＢ軸用ノツチトラツキングフイルタ１４の代
わりに、デイジタル信号処理プロセツサを使用す
るものである。 Next, a third embodiment of this invention will be described. In this third embodiment, the A-axis notch tracking filter 1 in the embodiment shown in FIG.
In place of the notch tracking filter 14 for the 1 and B axes, a digital signal processor is used.
このデイジタル信号処理プロセツサ部分のみを
説明すると第３図のようになる。この第３図にお
いて、振動信号増幅器２０で増幅された振動信号
は２１はフーリエ変換を行つて相手機械の回転数
成分の周波数fBのスペクトラムを除去する（Ａ＝
Ｃ−Ｂ）と、信号２２のようになり、自系統の機
械の回転数成分が得られる。 The digital signal processing processor section alone will be explained as shown in FIG. In FIG. 3, the vibration signal 21 amplified by the vibration signal amplifier 20 is subjected to Fourier transformation to remove the frequency f B spectrum of the rotational speed component of the target machine (A=
C-B) and signal 22, and the rotational speed component of the machine in the own system is obtained.
この信号２２を逆フーリエ変換すると、信号２
３のようになり、処理後の波形信号となる。この
信号２３を振動レベル表示器に送る。以下は第１
図の場合と同様であり、この第３の実施例の場合
も第１図の実施例と同様の効果が得られる。な
お、この第３図において、信号２４は相手機械の
回転基準信号を示す。 When this signal 22 is inversely Fourier transformed, the signal 2
3, which is the processed waveform signal. This signal 23 is sent to a vibration level indicator. Below is the first
This is the same as in the case shown in the figure, and the same effects as in the embodiment shown in FIG. 1 can be obtained in this third embodiment as well. In addition, in this FIG. 3, the signal 24 indicates the rotation reference signal of the mating machine.
上記この考案を要約すると、複合回転体をもつ
回転機械の振動監視計器として、それぞれの振動
計が自分自身の振動を主に監視できるように、振
動計の出力信号から相手の軸の回転数成分を取り
除く機能をもつた装置を備えることにより、的確
な監視を可能にしている。そして、相手の回転機
械の回転成分を取り除くには、
(1) 回転数が一定の回転機械や一定の回転数のみ
で監視が必要な場合は通常のノツチフイルタに
より行う。 To summarize the above idea, as a vibration monitoring instrument for a rotating machine with a complex rotating body, each vibration meter can detect the rotational frequency component of the other shaft from the output signal of the vibration meter so that it can mainly monitor its own vibration. By equipping a device with the function of removing the To remove the rotational component of the other rotating machine, (1) If the rotating machine has a constant rotational speed or only a fixed rotational speed needs to be monitored, use a normal notch filter.
(2) 回転数が変化中に使われる回転機械では、ノ
ツチトラツキングフイルタを用いて行う。(2) For rotating machinery that is used while the rotational speed is changing, use a notch tracking filter.
(3) 一般的に使えるものとして、マイクロコンピ
ユータによるデイジタル信号処理により、信号
のフーリエ変換−相手の回転機械の回転数成分
除去−信号の逆フーリエ変換を利用して、相手
機械の振動成分を除去する。(3) As a generally usable method, digital signal processing by a microcomputer is used to perform Fourier transform of the signal - removal of the rotational speed component of the other rotating machine - and inverse Fourier transform of the signal to remove the vibration component of the other machine. do.
この考案は、上述のような作用効果を有するの
で、２軸式ガスタービン、歯車増減速機、ベルト
式増幅速機などの複合回転体をもつ回転機械の振
動監視計器などに応用できる。 Since this invention has the above-mentioned effects, it can be applied to vibration monitoring instruments for rotating machines having complex rotating bodies such as two-shaft gas turbines, gear speed reducers, and belt speed amplifiers.
以上のように、この考案の振動検出器によれ
ば、被計測対象の回転機械の振動を振動計測手段
で計り、他の回転機械の回転数を回転計測手段で
計り、振動計測手段の出力から回転計測手段で計
測された回転数成分を除去するようにしたので、
相手の回転機械の振動の主成分を除去でき、自系
統の回転機械の振動が表示可能となり、適切な各
回転機械の軸受の振動監視が可能となる。
As described above, according to the vibration detector of this invention, the vibration of the rotating machine to be measured is measured by the vibration measuring means, the rotation speed of another rotating machine is measured by the rotation measuring means, and the vibration is measured from the output of the vibration measuring means. Since we removed the rotational speed component measured by the rotational measurement means,
The main component of the vibration of the other rotating machine can be removed, the vibration of the own rotating machine can be displayed, and the vibration of the bearings of each rotating machine can be appropriately monitored.
また、回転１次成分のみならず、高次の成分に
ついても、１次成分と同様の処理ができ、歯車軸
など、高調波の多い複合回転体をもつ機械でもそ
の利点を発揮するものである。 In addition, it is possible to process not only the first-order rotational component but also higher-order components in the same way as the first-order component, which is an advantage in machines with complex rotating bodies with many harmonics, such as gear shafts. .
第１図はこの考案の振動検出器の一実施例の構
成を示すブロツク図、第２図は同上振動検出器の
信号処理を説明するための図、第３図はこの考案
の振動検出器の他の実施例の要部の動作を説明す
るための図である。
１……回転機械、２……Ａ回転軸、３……Ｂ回
転軸、４……Ａ軸受振動検出器、５……Ｂ軸受振
動検出器、１０……Ａ軸受振動信号増幅器、１１
……Ａ軸用ノツチトラツキングフイルタ、１２…
…Ａ軸振動レベル表示器および警報発信器、１３
……Ｂ軸受振動信号増幅器、１４……Ｂ軸用ノツ
チトラツキングフイルタ、１５……Ｂ軸受用振動
レベル表示器および警報発信器。
Fig. 1 is a block diagram showing the configuration of an embodiment of the vibration detector of this invention, Fig. 2 is a diagram for explaining signal processing of the same vibration detector, and Fig. 3 is a diagram of the vibration detector of this invention. FIG. 7 is a diagram for explaining the operation of main parts of another embodiment. 1...Rotating machine, 2...A rotating shaft, 3...B rotating shaft, 4...A bearing vibration detector, 5...B bearing vibration detector, 10...A bearing vibration signal amplifier, 11
...A-axis notch tracking filter, 12...
...A-axis vibration level indicator and alarm transmitter, 13
... B-bearing vibration signal amplifier, 14 ... B-axis notch tracking filter, 15 ... B-bearing vibration level indicator and alarm transmitter.
Claims (1)
転機械の振動を検出する装置において、被計測対
象の回転機械の振動を計る振動計測手段と、他の
回転機械の回転数を計る回転計測手段と、上記振
動計測手段の出力から上記回転計測手段で計測さ
れた回転数成分を除去する除去手段とを具備する
振動検出器。 In a device for detecting vibrations of rotating machines having different rotational speeds arranged on the same base, a vibration measuring means measures the vibration of the rotating machine to be measured, and a rotation measuring means measures the rotational speed of another rotating machine. and a removing means for removing a rotational speed component measured by the rotation measuring means from the output of the vibration measuring means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2410885U JPH0325151Y2 (en) | 1985-02-20 | 1985-02-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2410885U JPH0325151Y2 (en) | 1985-02-20 | 1985-02-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61139438U JPS61139438U (en) | 1986-08-29 |
| JPH0325151Y2 true JPH0325151Y2 (en) | 1991-05-31 |
Family
ID=30517956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2410885U Expired JPH0325151Y2 (en) | 1985-02-20 | 1985-02-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0325151Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2572530B2 (en) * | 1993-08-30 | 1997-01-16 | 川崎重工業株式会社 | Vibration spectrum monitoring device, and health monitoring method and device |
-
1985
- 1985-02-20 JP JP2410885U patent/JPH0325151Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61139438U (en) | 1986-08-29 |
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