JPH0330686B2 - - Google Patents
Info
- Publication number
- JPH0330686B2 JPH0330686B2 JP6064284A JP6064284A JPH0330686B2 JP H0330686 B2 JPH0330686 B2 JP H0330686B2 JP 6064284 A JP6064284 A JP 6064284A JP 6064284 A JP6064284 A JP 6064284A JP H0330686 B2 JPH0330686 B2 JP H0330686B2
- Authority
- JP
- Japan
- Prior art keywords
- turbine
- inlet valve
- turbine inlet
- valve
- expansion
- 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
- 238000001514 detection method Methods 0.000 claims description 8
- 230000005856 abnormality Effects 0.000 claims description 5
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/20—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted
- F01D17/22—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted the operation or power assistance being predominantly non-mechanical
- F01D17/24—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted the operation or power assistance being predominantly non-mechanical electrical
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Turbines (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、膨張タービン保護装置に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an expansion turbine protection device.
ヘリウム液化装置、空気分離装置等の寒冷発生
源として膨張タービンが慣用されている。
Expansion turbines are commonly used as cold generation sources in helium liquefaction equipment, air separation equipment, and the like.
膨張タービンの起動は、タービン入口弁を遠隔
操作器からの操作信号により徐々に開け、回転数
を定常回転数までゆつくり上昇させることでなさ
れる。また、タービン保護条件に異常が生じた場
合は、三方口電磁界の作動によりタービン入口弁
を緊急遮断し回転を停止することで膨張タービン
は保護される。タービン保護条件の異常により停
止した膨張タービンの再起動は、タービン保護条
件が正常に復帰したことを確認し、さらにタービ
ン入口弁が全閉状態であることを膨張タービンの
回転数が零になつたことで確認した後に、タービ
ン入口弁を遠隔操作器からの操作信号により徐々
に開け、回転数を定常回転数までゆつくり上昇さ
せることでなされる。 The expansion turbine is started by gradually opening the turbine inlet valve in response to an operation signal from a remote controller and slowly increasing the rotational speed to a steady rotational speed. Furthermore, if an abnormality occurs in the turbine protection conditions, the expansion turbine is protected by urgently shutting off the turbine inlet valve and stopping rotation by operating the three-way electromagnetic field. When restarting an expansion turbine that has stopped due to an abnormality in the turbine protection conditions, it is confirmed that the turbine protection conditions have returned to normal, and that the turbine inlet valve is fully closed when the rotation speed of the expansion turbine reaches zero. After confirming this, the turbine inlet valve is gradually opened using an operation signal from a remote controller, and the rotational speed is slowly increased to a steady rotational speed.
ところで、膨張タービンの起動時に遠隔操作器
を誤操作してタービン入口弁に弁全開の操作信号
を急に出力した場合は、タービン入口弁は急激に
全開となり、これにより膨張タービンの回転数は
急上昇しオーバーシユートにより膨張タービンが
トリツプする。また、膨張タービンの再起動時
に、遠隔操作器の操作信号を開位置から全閉位置
信号にリセツトするのを忘れタービン保護条件の
正常復帰により三方口電磁弁の作動が解除された
場合にも、同様に膨張タービンの回転数がオーバ
シユートして膨張タービンがトリツプする。した
がつて、このような運転誤操作による膨張タービ
ンのトリツプを防止するには、運転操作が複雑に
なり熟練を必要としていた。 By the way, if you accidentally operate the remote controller when starting up the expansion turbine and suddenly output a fully open operation signal to the turbine inlet valve, the turbine inlet valve will suddenly open fully, and the rotational speed of the expansion turbine will suddenly increase. The overshoot causes the expansion turbine to trip. Also, when restarting the expansion turbine, if you forget to reset the operation signal of the remote controller from the open position to the fully closed position signal, and the three-way solenoid valve is deactivated due to the turbine protection conditions returning to normal, Similarly, the rotational speed of the expansion turbine will overshoot and the expansion turbine will trip. Therefore, in order to prevent the expansion turbine from tripping due to such operational errors, the operational operations become complicated and require skill.
本発明の目的は、膨張タービンの起動時に運転
操作を簡易化し熟練を必要としない膨張タービン
保護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 an expansion turbine protection device that simplifies operation and does not require skill when starting up an expansion turbine.
本発明は、膨張タービンの回転数を制御するタ
ービン入口弁が急激に全開とならぬようタービン
入口弁に備えた弁駆動回路に開方向の遅れ要素手
段を設けると共に、タービン入口弁の遠隔操作用
の信号回路にタービン入口弁全閉位置確認用の操
作信号検知手段を設け、該手段での検知結果を制
御回路に入力しタービン入口弁が全閉時のみ、膨
張タービンを起動可能とするように該制御回路を
構成したことを特徴とするもので、膨張タービン
の起動時に運転を誤操作しても膨張タービンがト
リツプしないようにしたものである。
The present invention provides a delay element means in the opening direction in a valve drive circuit provided in the turbine inlet valve so that the turbine inlet valve that controls the rotational speed of the expansion turbine does not suddenly become fully open, and also provides a means for remotely controlling the turbine inlet valve. An operation signal detection means for confirming the fully closed position of the turbine inlet valve is provided in the signal circuit, and the detection result by the means is input to the control circuit so that the expansion turbine can be started only when the turbine inlet valve is fully closed. The control circuit is characterized in that the control circuit is configured to prevent the expansion turbine from tripping even if the operation is erroneously operated during startup of the expansion turbine.
本発明の一実施例を図面により説明する。 An embodiment of the present invention will be described with reference to the drawings.
図面において、タービン入口弁１に信号増巾器
１０を設け、その出力信号の弁駆動回路２には、
シーケンス回路３によりタービン入口弁１を緊急
遮断する三方口電磁弁４が設けられている。弁駆
動回路２には、また、タービン入口弁１の開方向
の遅れ要素を持たせる、例えば、ニードル弁５が
設けられている。タービン入口弁１を遠方より開
閉操作を行なう遠隔操作器、例えば、空気式の遠
隔操作器６とタービン入口弁１とは、遠隔操作信
号回路７で接続され、遠隔操作信号回路７には、
遠隔操作器６での全閉操作信号検知要素を持たせ
る、例えば、圧力スイツチ８が接続されている。
また、圧力スイツチ８はシーケンス回路３に接続
されている。 In the drawing, the turbine inlet valve 1 is provided with a signal amplifier 10, and the valve drive circuit 2 of the output signal is provided with a signal amplifier 10.
A three-way solenoid valve 4 is provided for emergency shutoff of the turbine inlet valve 1 by means of a sequence circuit 3. The valve drive circuit 2 is also provided with, for example, a needle valve 5, which has a delay element in the opening direction of the turbine inlet valve 1. A remote control device for opening and closing the turbine inlet valve 1 from a distance, for example, a pneumatic remote control device 6, and the turbine inlet valve 1 are connected through a remote control signal circuit 7, and the remote control signal circuit 7 includes:
For example, a pressure switch 8 having a fully closed operation signal detection element on the remote controller 6 is connected.
Further, the pressure switch 8 is connected to the sequence circuit 3.
図で、膨張タービン９の起動は、遠隔操作器６
からの操作信号によりタービン入口弁１を徐々に
開け、回転数を定常回転数までゆつくり上昇させ
ることでなされる。この場合、タービン入口弁１
が開くことにより膨張タービン９には、ヘリウ
ム、空気等のプロセスガスＧが供給される。この
場合、遠隔操作器６を誤操作しタービン入口弁１
に弁全開の操作信号を急に出力したとしても、弁
駆動回路２に設けられたニードル弁５の絞り作用
により弁開信号はタービン入口弁１の駆動部にゆ
つくり作用しタービン入口弁１は徐々に開き、回
転数は定常回転数までゆつくり上昇する。このた
め、このような誤操作による運転をしても膨張タ
ービン９の回転数のオーバシユートを防止でき、
膨張タービン９はトリツプしない。また、タービ
ン保護条件Ａに異常が生じた場合は、シーケンス
回路３からの信号により三方口電磁弁４が作動
し、この三方口電磁弁４の作動によりタービン入
口弁１を緊急遮断し回転を停止することで、膨張
タービン９は保護される。更に、タービン保護条
件Ａの異常により停止した膨張タービン９の再起
動は、タービン保護条件Ａが正常に復帰しタービ
ン入口弁１の全閉状態を確認し、この場合は、更
に、遠隔操作器６の操作信号が開信号から全閉信
号にリセツトされているのを圧力スイツチ８で検
知した後に、遠隔操作器６からの操作信号により
タービン入口弁１を徐々に開け、回転数を定常回
転数までゆつくり上昇させることでなされる。こ
のように遠隔操作器６の操作信号が開信号から全
閉信号にリセツトされているのを圧力スイツチ８
で検知しない限り更起動できないようになつてい
るため、遠隔操作器６の操作信号を開信号から全
閉信号にリセツトするのを忘れタービン保護条件
Ａの正常復帰により三方口電磁弁４の作動が解除
されたとしても、膨張タービン９は再起動され
ず、したがつて、膨張タービン９はトリツプしな
い。 In the figure, the expansion turbine 9 is started using the remote controller 6.
This is done by gradually opening the turbine inlet valve 1 in response to an operation signal from the engine, and slowly increasing the rotational speed to a steady rotational speed. In this case, turbine inlet valve 1
By opening, the expansion turbine 9 is supplied with a process gas G such as helium or air. In this case, if the remote controller 6 is operated incorrectly, the turbine inlet valve 1
Even if the operation signal to fully open the valve is suddenly output, the valve opening signal acts slowly on the drive section of the turbine inlet valve 1 due to the throttling action of the needle valve 5 provided in the valve drive circuit 2, and the turbine inlet valve 1 It gradually opens and the rotational speed slowly rises to a steady rotational speed. Therefore, even if the operation is caused by such an erroneous operation, overshoot of the rotational speed of the expansion turbine 9 can be prevented.
Expansion turbine 9 does not trip. In addition, if an abnormality occurs in the turbine protection condition A, the three-way solenoid valve 4 is activated by a signal from the sequence circuit 3, and the operation of the three-way solenoid valve 4 immediately shuts off the turbine inlet valve 1 and stops the rotation. By doing so, the expansion turbine 9 is protected. Furthermore, when restarting the expansion turbine 9 that has stopped due to an abnormality in the turbine protection condition A, it is confirmed that the turbine protection condition A has returned to normal and the turbine inlet valve 1 is fully closed. After the pressure switch 8 detects that the operation signal has been reset from the open signal to the fully closed signal, the turbine inlet valve 1 is gradually opened by the operation signal from the remote controller 6, and the rotation speed is increased to the steady rotation speed. It is done by slowly raising it. When the operation signal of the remote controller 6 is reset from the open signal to the fully closed signal, the pressure switch 8
Since the engine cannot be restarted unless it is detected by Even if released, the expansion turbine 9 will not be restarted and therefore will not trip.
本実施例のような膨張タービン保護装置では、
膨張タービンの起動時に運転を誤操作しても膨張
タービンはトリツプしないため、運転操作を簡易
化でき熟練を必要としない。 In an expansion turbine protection device like this embodiment,
Since the expansion turbine will not trip even if an operation is erroneously performed when starting the expansion turbine, operation can be simplified and no skill is required.
本発明は、以上説明したように、膨張タービン
の回転数を制御するタービン入口弁が急激に全開
とならぬようタービン入口弁に開方向の遅れ要素
手段を設けると共に、タービン入口弁の遠隔操作
用の信号回路にタービン入口弁全閉位置確認用の
操作信号検知手段を設け、該手段での検知結果を
制御回路に入力しタービン入口弁が全閉時のみ、
膨張タービンを起動可能とするように該制御回路
を構成したことで、運転を誤操作しても膨張ター
ビンはトリツプしないので、運転操作を簡易化で
き熟練を必要としないといつた効果がある。
As explained above, the present invention provides the turbine inlet valve with a delay element means in the opening direction so that the turbine inlet valve that controls the rotational speed of the expansion turbine does not suddenly fully open, and also provides remote control of the turbine inlet valve. An operation signal detection means for confirming the fully closed position of the turbine inlet valve is provided in the signal circuit, and the detection result by the means is inputted to the control circuit, so that only when the turbine inlet valve is fully closed,
By configuring the control circuit so as to be able to start the expansion turbine, the expansion turbine will not trip even if the operation is erroneously operated, so that the operation can be simplified and no skill is required.
図面は、本発明による膨張タービン保護装置の
一実施例を示す系統図である。
１……タービン入口弁、２……弁駆動回路、３
……シーケンス回路、４……三方口電磁弁、５…
…ニードル弁、６……遠隔操作器、７……遠隔操
作信号回路、８……圧力スイツチ、９……膨張タ
ービン、１０……信号増巾器。
The drawing is a system diagram showing one embodiment of the expansion turbine protection device according to the present invention. 1...Turbine inlet valve, 2...Valve drive circuit, 3
...Sequence circuit, 4...Three-way solenoid valve, 5...
...Needle valve, 6...Remote controller, 7...Remote control signal circuit, 8...Pressure switch, 9...Expansion turbine, 10...Signal amplifier.
Claims (1)
ンの回転数を制御する弁駆動回路を備えたタービ
ン入口弁と、タービン保護条件の異常により前記
弁駆動回路に設けた三方口電磁界を作動しタービ
ン入口弁を緊急遮断させる制御回路とを有する膨
張タービンにおいて、 前記タービン入口弁の遠隔開閉操作信号に対し
て、タービン入口弁が急激に全開とならぬようタ
ービン入口弁に備えた弁駆動回路に開方向の遅れ
要素手段を設けると共に、タービン入口弁の遠隔
操作用の信号回路にタービン入口弁全閉位置確認
用の操作信号検知手段を設け、該検知手段での検
知結果を前記制御回路に入力しタービン入口弁が
全閉時のみ、膨張タービンを起動可能とするよう
に該制御回路を構成したことを特徴とする膨張タ
ービン保護装置。[Scope of Claims] 1. A turbine inlet valve equipped with a valve drive circuit that controls the rotation speed of the expansion turbine by an operation signal from a remote controller, and a three-way solenoid valve installed in the valve drive circuit due to an abnormality in the turbine protection conditions. In the expansion turbine, the turbine inlet valve is provided with a control circuit that operates the field to emergency shut off the turbine inlet valve, and the turbine inlet valve is provided to prevent the turbine inlet valve from suddenly fully opening in response to a remote opening/closing operation signal for the turbine inlet valve. The valve drive circuit is provided with a delay element means for opening direction, and the signal circuit for remote control of the turbine inlet valve is provided with an operation signal detection means for confirming the fully closed position of the turbine inlet valve, and the detection result by the detection means is An expansion turbine protection device characterized in that the control circuit is configured such that the expansion turbine can be started only when the turbine inlet valve is fully closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6064284A JPS59188002A (en) | 1984-03-30 | 1984-03-30 | Expansion turbine protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6064284A JPS59188002A (en) | 1984-03-30 | 1984-03-30 | Expansion turbine protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59188002A JPS59188002A (en) | 1984-10-25 |
| JPH0330686B2 true JPH0330686B2 (en) | 1991-05-01 |
Family
ID=13148178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6064284A Granted JPS59188002A (en) | 1984-03-30 | 1984-03-30 | Expansion turbine protection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59188002A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5625563B2 (en) * | 2010-07-12 | 2014-11-19 | 株式会社Ihi | How to start a steam turbine |
-
1984
- 1984-03-30 JP JP6064284A patent/JPS59188002A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59188002A (en) | 1984-10-25 |
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