JPH01117536U

JPH01117536U -

Info

Publication number: JPH01117536U
Application number: JP1253388U
Authority: JP
Priority date: 1988-02-03
Filing date: 1988-02-03
Publication date: 1989-08-08

Description

[Brief explanation of drawings]

第１図は本考案の一実施例のタービン発電機軸
系の計測構成図、第２図は同実施例の同回転パル
ス逓降器のブロツク線図、第３図は第２図の信号
図、第４図は従来例のタービン発電機軸系の計測
構成図、第５図は従来例の捩り角変位計のブロツ
ク線図、第６図は第５図の信号図である。１ａ，１ｂ……蒸気タービン、２……発電機、
３ａ，３ｂ……ロータ軸、４ａ，４ｂ……回転パ
ルス歯車、５ａ，５ｂ……回転パルス検出器、６
ａ，６ｂ……基準マーク信号検出器、７ａ……回
転パルス逓降器、８ａ……パルス逓降設定器、０
１０……回転速度カウンタ、０１１……位相差パ
ルスフリツプフロツプ、０１２……基準信号発振
器、０１３……位相差カウンタ、０１４……割算
器、０１５……Ｄ／Ａ変換器。 Fig. 1 is a measurement configuration diagram of a turbine generator shaft system according to an embodiment of the present invention, Fig. 2 is a block diagram of a rotary pulse downgrader of the same embodiment, Fig. 3 is a signal diagram of Fig. 2, 4 is a measurement configuration diagram of a conventional turbine generator shaft system, FIG. 5 is a block diagram of a conventional torsional angle displacement meter, and FIG. 6 is a signal diagram of FIG. 5. 1a, 1b...steam turbine, 2...generator,
3a, 3b...Rotor shaft, 4a, 4b...Rotating pulse gear, 5a, 5b...Rotating pulse detector, 6
a, 6b...Reference mark signal detector, 7a...Rotating pulse down-down device, 8a...Pulse down-down setting device, 0
10... Rotation speed counter, 011... Phase difference pulse flip-flop, 012... Reference signal oscillator, 013... Phase difference counter, 014... Divider, 015... D/A converter.

Claims

[Scope of utility model registration request]

Rotating pulse gears are provided at a plurality of predetermined points on the rotating shaft to be measured, and one and the other of the output rotation pulse signals of the rotating pulse detector facing the rotating pulse gear are connected to a rotational speed counter, a phase difference pulse flip-flop, and a rotational speed counter. In a torsion angle displacement meter that inputs each input to a phase difference pulse flip-flop and measures the torsion angle, a rotational pulse reference mark provided on the rotating shaft near the same rotating pulse gear and a reference for detecting the above rotational pulse reference mark are used. A mark detector, a pulse step-down setting device for setting the step down of the number of pulses, and a rotating pulse step-down device are provided. The output signal of the detector is inputted, and a pulse obtained by descending the number of pulses from the rotational pulse that is subsequently input based on the reference pulse is output, and one of these pulses is used as a rotational speed counter and A torsional angle displacement meter characterized in that one input signal is input to a phase difference pulse flip-flop, and the other input is input to a phase difference pulse flip-flop.