JPS6244618A - Monitoring device for eccentricity of steam turbine - Google Patents
Monitoring device for eccentricity of steam turbineInfo
- Publication number
- JPS6244618A JPS6244618A JP18426185A JP18426185A JPS6244618A JP S6244618 A JPS6244618 A JP S6244618A JP 18426185 A JP18426185 A JP 18426185A JP 18426185 A JP18426185 A JP 18426185A JP S6244618 A JPS6244618 A JP S6244618A
- Authority
- JP
- Japan
- Prior art keywords
- eccentricity
- turbine
- steam turbine
- turning
- revolutions
- 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
Links
Abstract
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は蒸気タービンの運転保護装置に係り、特に、蒸
気タービンの偏心計測に好適な偏心警報値の複数段切替
監視装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an operation protection device for a steam turbine, and particularly to a multi-stage switching monitoring device for eccentricity alarm values suitable for measuring eccentricity of a steam turbine.
従来の装置は、特開昭４９−８１７０１号公報に記載の
ように、タービン回転時における偏心計測、又は、ター
ニング時における偏心計測のみとなっていた。しかし、
蒸気タービンの連続監視に関するターニングよジタービ
ン回転時における、偏心計測の運転保護については論及
されていなかった。Conventional devices, as described in Japanese Unexamined Patent Publication No. 49-81701, only measure eccentricity during turbine rotation or during turning. but,
Regarding the continuous monitoring of steam turbines, no mention was made of the operational protection of eccentricity measurement during turning rotation of the turbine.
すなわち、第２図は従来の蒸気タービンの偏心計測系統
図を示す。That is, FIG. 2 shows a conventional eccentricity measurement system diagram of a steam turbine.
タービン本体１に増付けられた偏心検出器２によシ信号
を取出し偏心計測用プリアンプ３を経由してシステムキ
ャビネット４に実装された偏心モジュール５で検出され
た回転軸の偏心量に比例した入力信号を受け、偏心量の
全損＠量に比例した直流電圧に変換する。その直流電圧
を警報設定器６で入力し、偏心量の異常を検出して中操
盤７の警報器８に表示する。An eccentricity detector 2 added to the turbine body 1 takes out a signal, passes through an eccentricity measurement preamplifier 3, and sends an input proportional to the amount of eccentricity of the rotating shaft detected by an eccentricity module 5 mounted in a system cabinet 4. It receives the signal and converts it into a DC voltage proportional to the total loss @ amount of eccentricity. The DC voltage is inputted into the alarm setting device 6, and an abnormality in the amount of eccentricity is detected and displayed on the alarm 8 of the central control panel 7.
しかし、最近では偏心計測範囲が蒸気タービンのターニ
ング時よりタービン回転数の中速近辺迄と広範囲になっ
てきておシ、第３図に示すような現象が発生する。すな
わち、タービンロータ軸受１０の中のタービンロータ軸
１１はターニング時と回転数上昇開始時の切換時点でイ
から口の回転方向に軸移動が発生する。この移動は正常
状態であるが偏心検出器２からみれば偏心ｊｌＡに軸の
移動量Ｂが加算されることになるため、偏心量として警
報が発生する不具合が生じる。なお、偏心量Ｃは回転数
上昇時の１直である。However, recently, the range of eccentricity measurement has become wider, from when the steam turbine is turning to around the middle speed of the turbine, and the phenomenon shown in FIG. 3 occurs. That is, the turbine rotor shaft 11 in the turbine rotor bearing 10 undergoes axial movement in the rotational direction from A to I at the time of switching between turning and when the rotational speed starts to increase. Although this movement is a normal state, from the perspective of the eccentricity detector 2, the amount of movement B of the shaft is added to the eccentricity jlA, which causes a problem that an alarm is generated as the amount of eccentricity. Note that the eccentricity C is one shift when the rotational speed increases.
本発明の目的は蒸気タービンの偏心に対する保護及び監
視をターニングよジタービン回転後の広範囲にわたって
行ない安全な蒸気タービンの運転装置を提供することに
ある。SUMMARY OF THE INVENTION An object of the present invention is to provide a safe steam turbine operating system that protects and monitors eccentricity of a steam turbine over a wide range after rotation of the turning yaw turbine.
本発明は蒸気タービンの偏心量が、ターニング時、ター
ニングより回転数上昇開始時、つまり、タービンロータ
の軸移動時及びタービンロータの軸移動完了時の三つの
運転パターンにより偏心警報値の設定を変化させ広範囲
な蒸気タービンの運転を確保することにある。The present invention changes the setting of the eccentricity alarm value according to three operating patterns in which the amount of eccentricity of the steam turbine is determined during turning, when the rotation speed starts to increase after turning, that is, when the shaft of the turbine rotor is moved, and when the shaft of the turbine rotor is completely moved. The objective is to ensure wide range of steam turbine operation.
〔発明の実施例〕 以下、第１図によシ本発明を説明する。[Embodiments of the invention] The present invention will be explained below with reference to FIG.
従来の偏心モジュール５のあとに函数発生器２０を追加
することによシ、蒸気タービンの偏心量が各条件接点（
ターニング開始２１、通気による弁開２２、タービン回
転数上昇時２３）によりターニング時、タービン回転数
上昇開始時及び回転数上昇時の三つの運転パターンによ
シ運転域と警報域に区分して運転することによシターニ
ング運転からタービン回転数の中速近辺迄の偏心量を連
続して監視することが可能となりＤｓｓ化運転にも充分
効果が期待出来る。By adding a function generator 20 after the conventional eccentricity module 5, the amount of eccentricity of the steam turbine can be adjusted to each condition contact point (
Operation is divided into three operating patterns: start of turning (21), opening of valve due to ventilation (22), and rise in turbine speed (23) during turning, start of rise in turbine speed, and rise in speed. By doing so, it becomes possible to continuously monitor the amount of eccentricity from the turning operation to around the middle speed of the turbine rotation speed, and a sufficient effect can be expected in the DSS operation.
本発明によれば、蒸気タービンの偏心量をターニング時
からタービン回転数中速近辺迄を連続して監視すること
ができるので、蒸気タービンの安全運転が確保出来る。According to the present invention, the amount of eccentricity of the steam turbine can be continuously monitored from the time of turning to around the middle speed of the turbine rotation, so that safe operation of the steam turbine can be ensured.
第１図は本発明の一実施例の蒸気タービンの偏心計測系
統図、第２図は従来の蒸気タービンの偏心計測系統図、
第３図はターニングから回転数上昇特進の偏心量の変化
及びタービンロータ軸の軸移動説明図である。
１・・・タービン本体、２・・・偏心検出器、３・・・
偏心計用プリアンプ、４・・・システムキャビネット、
５・・・偏心モジュール、６・・・警報設定器、７・・
・中操盤、８・・・警報器、２０・・・函数発生器、２
１・・・ターニング開始でオンする接点、２２・・・通
気にょる弁開でオンする接点、２３・・・回転数上昇時
でオンする接点。FIG. 1 is an eccentricity measurement system diagram of a steam turbine according to an embodiment of the present invention, FIG. 2 is an eccentricity measurement system diagram of a conventional steam turbine,
FIG. 3 is an explanatory diagram of changes in the amount of eccentricity and the movement of the turbine rotor shaft from turning to speed increase acceleration. 1... Turbine body, 2... Eccentricity detector, 3...
Preamplifier for eccentricity meter, 4...system cabinet,
5... Eccentricity module, 6... Alarm setting device, 7...
・Central control panel, 8...Alarm, 20...Function generator, 2
1...Contact that turns on when turning starts, 22...Contact that turns on when the valve opens due to ventilation, 23...Contact that turns on when the rotation speed increases.
Claims (1)
号を取り出す信号変換器と、その信号の絶対値の大きさ
により警報を発する警報設定器とより成る蒸気タービン
の偏心監視装置において、複数段の警報設定値を連続的
に切替える回路を設けたことを特徴とする蒸気タービン
の偏心監視装置。1. A steam turbine eccentricity monitoring device comprising a steam turbine eccentricity detector, a signal converter that extracts a signal proportional to the amount of eccentricity, and an alarm setting device that issues an alarm depending on the magnitude of the absolute value of the signal. An eccentricity monitoring device for a steam turbine, characterized in that it is provided with a circuit that continuously switches alarm set values for stages.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18426185A JPS6244618A (en) | 1985-08-23 | 1985-08-23 | Monitoring device for eccentricity of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18426185A JPS6244618A (en) | 1985-08-23 | 1985-08-23 | Monitoring device for eccentricity of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6244618A true JPS6244618A (en) | 1987-02-26 |
Family
ID=16150220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18426185A Pending JPS6244618A (en) | 1985-08-23 | 1985-08-23 | Monitoring device for eccentricity of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6244618A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5990759A (en) * | 1996-06-18 | 1999-11-23 | Maspro Denkoh, Co., Ltd. | Directional coupler rotatable around a fulcrum |
| US6157273A (en) * | 1996-06-18 | 2000-12-05 | Maspro Denkoh Co., Ltd. | Rotatable directional coupler with a tap plate |
| CN111120015A (en) * | 2019-12-27 | 2020-05-08 | 浙江浙能技术研究院有限公司 | Real-time monitoring system and monitoring method for eccentric swing of 50MW steam turbine cylinder body |
-
1985
- 1985-08-23 JP JP18426185A patent/JPS6244618A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5990759A (en) * | 1996-06-18 | 1999-11-23 | Maspro Denkoh, Co., Ltd. | Directional coupler rotatable around a fulcrum |
| US6157273A (en) * | 1996-06-18 | 2000-12-05 | Maspro Denkoh Co., Ltd. | Rotatable directional coupler with a tap plate |
| CN111120015A (en) * | 2019-12-27 | 2020-05-08 | 浙江浙能技术研究院有限公司 | Real-time monitoring system and monitoring method for eccentric swing of 50MW steam turbine cylinder body |
| CN111120015B (en) * | 2019-12-27 | 2022-04-29 | 浙江浙能技术研究院有限公司 | Real-time monitoring system and monitoring method for eccentric swing of 50MW steam turbine cylinder body |
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