JPS6079176A - Anomaly detecting apparatus for water wheel or pump water wheel - Google Patents
Anomaly detecting apparatus for water wheel or pump water wheelInfo
- Publication number
- JPS6079176A JPS6079176A JP58188160A JP18816083A JPS6079176A JP S6079176 A JPS6079176 A JP S6079176A JP 58188160 A JP58188160 A JP 58188160A JP 18816083 A JP18816083 A JP 18816083A JP S6079176 A JPS6079176 A JP S6079176A
- Authority
- JP
- Japan
- Prior art keywords
- water wheel
- vibration
- specific frequency
- set value
- pump
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/02—Machines or engines of reaction type; Parts or details peculiar thereto with radial flow at high-pressure side and axial flow at low-pressure side of rotors, e.g. Francis turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/04—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator for diminishing cavitation or vibration, e.g. balancing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
水車またはポンプ水車の異常を早期に発見して大事故の
未然防止を行うと共に不具合の早期手直しにより長期に
渡り安定な電力を供給するための水車またはポンプ水車
・の異常検出装置に関する。[Detailed Description of the Invention] [Technical Field of the Invention] A water turbine for detecting abnormalities in a water turbine or a pump-turbine at an early stage to prevent major accidents, and supplying stable power over a long period of time by early correction of defects. Or related to abnormality detection equipment for pump water turbines.
以下水車を例に従来のこの種の装置について、第１図に
よシ説明する。１はランナ、２＃′ｉドラフト、６はス
パイラルケーシング、４はガイドベーン、５は上カバー
、６は水車軸、７はカップリング、８は発電機、９は軸
振動検出器、１ｏは上カバー振動検出器、１１．１２は
信号変換器、１６゜１４は比較警報器である。上カバー
５又は水車軸６の振動が大になったことを各振動検出器
９，１゜で検出し、信号変換器１１．１２を通して比較
′警報器１３．１４で規定値をオーバしたことを判定し
警報する。A conventional device of this type will be explained below with reference to FIG. 1, taking a water turbine as an example. 1 is a runner, 2#'i draft, 6 is a spiral casing, 4 is a guide vane, 5 is an upper cover, 6 is a water wheel shaft, 7 is a coupling, 8 is a generator, 9 is a shaft vibration detector, 1o is an upper A cover vibration detector, 11.12 a signal converter, and 16°14 a comparison alarm. Vibration detectors 9 and 1 detect that the vibration of the upper cover 5 or the water turbine shaft 6 has become large, and a comparison alarm 13.14 detects that the vibration has exceeded the specified value through a signal converter 11.12. Determine and issue a warning.
これ等の従来装置では振動のオーバオール値が規定値を
オーバしたことにより警報を出す方式であるために異常
が可成り進行してからでないと検出できないという大き
な欠点があった。These conventional devices have a major drawback in that they issue an alarm when the overall value of vibration exceeds a specified value, and therefore cannot be detected until the abnormality has progressed considerably.
本発明は水車の形状によりあらかじめ決まる数種類の回
転数のｎ倍の特定周波数の前後所定幅の帯域にて周波数
を数区分に分割し、その特定周波数成分が各設定値を超
えたことを判定するようにして上記従来のごとき欠点を
除去しようとする水車・ポンプ水車の異常検出装置を提
供することを目的としている。The present invention divides the frequency into several sections in a predetermined width band before and after a specific frequency that is n times the number of revolutions determined in advance by the shape of the water turbine, and determines whether the specific frequency component exceeds each set value. It is an object of the present invention to provide an abnormality detection device for water turbines and pump water turbines, which eliminates the above-mentioned conventional drawbacks.
本発明の一実施例につき第２図及び第３図により説明す
る。まず、第２図によシ本発明の詳細な説明する。水車
の発生する振動の主要周波数成分とその発生原因は低い
方から下表の通ヤである。An embodiment of the present invention will be explained with reference to FIGS. 2 and 3. First, the present invention will be explained in detail with reference to FIG. The main frequency components of vibrations generated by water turbines and their causes are shown in the table below from lowest to lowest.
−例として回転数Ｎ＝３６Ｏｒｐｍ（ｎ＝６ｒｐａ）。- As an example, rotational speed N=36 Orpm (n=6 rpa).
Ｚ９＝１８、ＺＲ＝６ ＊ ／６＝６０１（ｚ ）場合
について横軸に周波数、縦軸に振動軸振の振幅を図示し
たものが第２図でおる。図示のごとく各特定周波数の前
後所定幅の帯域にて周波数を数区分に分割し、その特定
周波数成分が各般定値ｆ８□乃至ｆ８６を超えたか否か
を判定すれば水車の異常を早期に発見することが可能で
ある。FIG. 2 shows the frequency on the horizontal axis and the amplitude of the vibration axial vibration on the vertical axis for the case where Z9=18 and ZR=6*/6=601(z). As shown in the figure, if the frequency is divided into several sections in a band of a predetermined width before and after each specific frequency, and it is determined whether the specific frequency component exceeds each general value f8□ to f86, abnormalities in the water turbine can be detected early. Is possible.
次に本発明の一実施例について第３図により説明する。Next, one embodiment of the present invention will be described with reference to FIG.
第１図と同一符号は同一または相当品を示す詳しい説明
は省く。１５は第２図のごとき周波数分析を行うスペク
トルアナライザ、１６は特定周波数成分が設定値を超え
ているか否かを判定する比較警報器である。このように
構成することにより水車の微少な欠陥も早期に検出する
ことが可能となり重大事故の未然防止、早期手直しが実
現可能な水車またはポンプ水車の異常検出装置を提供す
ることができる。The same reference numerals as in FIG. 1 indicate the same or equivalent parts, and a detailed explanation will be omitted. 15 is a spectrum analyzer that performs frequency analysis as shown in FIG. 2, and 16 is a comparison alarm that determines whether a specific frequency component exceeds a set value. With this configuration, it is possible to detect even minute defects in the water turbine at an early stage, and it is possible to provide an abnormality detection device for a water turbine or a pump water turbine that can prevent serious accidents and make early repairs possible.
以上のように、この発明によれば、振動の発生原因に応
じた周波数に区分し、各周波数帯域に対して異なる警報
設定値を設けて比較警報器から報知させるように構成し
たので、事故の種類又は事故の発生場所が即座に判定で
き、早期の対策を施すことができる効果がおる。As described above, according to the present invention, vibration is divided into frequencies according to the causes of occurrence, and different alarm setting values are provided for each frequency band, and the comparator alarm is used to notify the vibration. This has the effect that the type or location of the accident can be immediately determined, allowing early countermeasures to be taken.
第１図は従来の水車中ポンプ水車の異常検出装置のブロ
ック図、第２図は本発明の動作原理を説明する水車の振
動周波数の分析図、第３図は本発明の一実施例による水
車・ポンプ水車の異常検出装置を示すブロック図である
。
１・・・ランナ、６・・・スパイラル・ケーシング、４
・・・ガイド・ベーン、５・・・上カバー、６・・・水
車軸、９・・・軸振動検出器、１０・・・上カバー振動
検出器、１１．１２・・・信号変換器、１５・・・スペ
クトル・アナライザ、１６・・・比較警報器。
なお、図中、同一符号は同−又は相当部分を示す。
代理人 大岩増雄
第１図
第２図
→屑′；ＩＬ嘗（Fig. 1 is a block diagram of a conventional abnormality detection device for a pump-turbine in a water turbine, Fig. 2 is an analysis diagram of the vibration frequency of a water turbine to explain the operating principle of the present invention, and Fig. 3 is a water turbine according to an embodiment of the present invention. - It is a block diagram showing an abnormality detection device of a pump water turbine. 1...Runner, 6...Spiral casing, 4
...Guide vane, 5...Top cover, 6...Water wheel shaft, 9...Shaft vibration detector, 10...Top cover vibration detector, 11.12...Signal converter, 15...Spectrum analyzer, 16...Comparison alarm. In addition, in the figures, the same reference numerals indicate the same or corresponding parts. Agent Masuo Oiwa Figure 1 Figure 2 → Scraps'; IL 嘗(
Claims (1)
れ検出器、上記水車またはポンプ水車の振動周波数を上
記水車またはポンプ水車の形状により決まる数種類の回
転数のｎ倍の特定周波数の前後所定幅の帯域にて周波数
を数区分に分割し、上記特定周波数成分の振幅が予じめ
上記特定周波数成分に応じて定めた各設定値を超えたこ
とを判定する比較器を備えた水車またはポンプ水車の異
常検出装置。A vibration or shaft run-out detector that detects the vibration of a water turbine or a pump-turbine, which detects the vibration frequency of the water turbine or a pump-turbine in a band of a predetermined width before and after a specific frequency of n times the number of rotations of several types determined by the shape of the water turbine or pump-turbine. An abnormality in a water turbine or pump turbine equipped with a comparator that divides the frequency into several sections and determines whether the amplitude of the specific frequency component exceeds each set value predetermined according to the specific frequency component. Detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58188160A JPS6079176A (en) | 1983-10-05 | 1983-10-05 | Anomaly detecting apparatus for water wheel or pump water wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58188160A JPS6079176A (en) | 1983-10-05 | 1983-10-05 | Anomaly detecting apparatus for water wheel or pump water wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6079176A true JPS6079176A (en) | 1985-05-04 |
| JPH0144903B2 JPH0144903B2 (en) | 1989-10-02 |
Family
ID=16218802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58188160A Granted JPS6079176A (en) | 1983-10-05 | 1983-10-05 | Anomaly detecting apparatus for water wheel or pump water wheel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6079176A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7655204B2 (en) | 1995-10-02 | 2010-02-02 | Mitsubishi Jukogyo Kabushiki Kaisha | Heat-treated active carbons for use in denitration, processes for producing same, denitration method using same, and denitration system using same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03208957A (en) * | 1990-01-11 | 1991-09-12 | Hayakawa Rubber Co Ltd | Impact relaxing flooring material |
-
1983
- 1983-10-05 JP JP58188160A patent/JPS6079176A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7655204B2 (en) | 1995-10-02 | 2010-02-02 | Mitsubishi Jukogyo Kabushiki Kaisha | Heat-treated active carbons for use in denitration, processes for producing same, denitration method using same, and denitration system using same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0144903B2 (en) | 1989-10-02 |
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