JPS59188002A - Expansion turbine protection device - Google Patents
Expansion turbine protection deviceInfo
- Publication number
- JPS59188002A JPS59188002A JP6064284A JP6064284A JPS59188002A JP S59188002 A JPS59188002 A JP S59188002A JP 6064284 A JP6064284 A JP 6064284A JP 6064284 A JP6064284 A JP 6064284A JP S59188002 A JPS59188002 A JP S59188002A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- turbine
- expansion turbine
- remote control
- 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.)
- Granted
Links
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)
Abstract
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、タービン人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
でゆっ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、三方向電磁弁の作動に
よりタービン人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。更に、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タービン人口弁の全閉状態を膨
張タービンの回転数が零になったことで間接的に確認し
た後に、タービン人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っくり上昇
させることでなされる。The expansion turbine is started by gradually opening the turbine artificial 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 artificial valve and stopping rotation by operating the three-way solenoid valve. Furthermore, the restart of the expansion turbine that had stopped due to an abnormality in the turbine protection conditions was indirectly confirmed when the turbine protection conditions returned to normal and the fully closed state of the turbine artificial valve was confirmed by the fact that the rotation speed of the expansion turbine became zero. Afterwards, the turbine artificial valve is gradually opened in response to an operation signal from a remote controller, and the rotation speed is slowly increased to a steady rotation speed.
ところが、膨張タービンの起動時に遠隔操作器を誤操作
してタービン人口弁に弁全開の操作信号を出力した場合
は、タービン人口弁は急に全開し、これにより膨張ター
ビンの回転数がオーバシュートして膨張タービンがトリ
ップしたり、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信号から全閉信号にリセットするの
を忘れタービン保護条件の正常復帰により二方口電磁弁
の作動が解除された場合にも、同様に膨張タービンの回
転数がオーバシュートして膨張タービンがトリップする
。したがって、このような運転誤操作による膨張タービ
ンのトリップを防止するには、運転操作が複雑になり熟
練を必要としていた。However, if the remote controller is erroneously operated when starting up the expansion turbine and a signal to fully open the valve is output to the turbine artificial valve, the turbine artificial valve will suddenly open fully, causing the rotational speed of the expansion turbine to overshoot. When the expansion turbine trips, or when restarting the expansion turbine, you may forget to reset the operation signal of the remote controller from the open signal to the fully closed signal, and the two-way solenoid valve will not operate when the turbine protection conditions return to normal. Even when it is released, the rotational speed of the expansion turbine similarly overshoots and the expansion turbine trips. 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、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 is easy to operate and does not require skill.
本発明は、膨張タービンの回転数を制御するタービン人
口弁の弁駆動回路に開方向の遅れ要素を持たせ、タービ
ン人口弁の遠隔操作信号回路に全閉操作信号検知要素を
持たせたことを特徴とするもので、運転誤操作しても膨
張タービンがトリップしないようにしたものである。The present invention provides a valve drive circuit for a turbine artificial valve that controls the rotational speed of an expansion turbine with a delay element in the opening direction, and a remote control signal circuit for the turbine artificial valve with a fully closed operation signal detection element. This feature prevents the expansion turbine from tripping even if an operation error occurs.
本発明の一実施例を図面番こより説明する。 An embodiment of the present invention will be described with reference to the drawing numbers.
図面で、タービン人口弁ｌの弁駆動回路２には、シーケ
ンス回路３によりタービン人口弁ｌを緊急遮断する二方
口電磁弁４が設けられている。弁駆動回路２には、また
、タービン人口弁ｌ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。遠隔操作器、例
えば、空気式の遠隔操作器６とタービン人口弁ｌ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、圧力スイッチ８が接続されている。In the drawing, a valve drive circuit 2 for a turbine artificial valve 1 is provided with a two-way solenoid valve 4 for emergency shutoff of the turbine artificial valve 1 by 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 artificial valve 1. The remote controller, for example, the pneumatic remote controller 6 and the turbine artificial valve l, are
The remote control signal circuit 7 is connected to, for example, a pressure switch 8 having a fully closed operation signal detection element in the remote control device 6 .
また、圧力スイッチ８はシーケンス回路３に接続されて
いる。Further, the pressure switch 8 is connected to the sequence circuit 3.
擲４図で、膨減タービン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人口弁１を徐々に開け、回転
数を定常回転数まで９つ鳴り上昇させることでなされる
。この場合、タービン人口弁ｌ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
人口弁１に弁全開の操作信号を出力したとしても、ニー
ドル弁５の作用によりタービン人口弁ｌは徐々に開き、
回転数は定常回転数までゆっくり上昇する。In Figure 4, the expansion and contraction turbine 9 is started by gradually opening the turbine artificial valve 1 in response to an operation signal from the remote controller 6 and increasing the rotational speed by 9 rotations to a steady rotational speed. In this case, the expansion turbine 9 is supplied with a process gas G such as helium or air by opening the turbine valve l. In this case, even if the remote controller 6 is erroneously operated and an operation signal to fully open the valve is output to the turbine valve 1, the turbine valve 1 gradually opens due to the action of the needle valve 5.
The rotation speed slowly increases to a steady rotation speed.
このため、このような運転誤操作しても膨張タービン９
の回転数のオーバシュートを防止でき膨張タービン９は
トリップしない。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からの信号により二方口
電磁弁４が作動し、この二方口電磁弁４の作動によりタ
ービン人口弁ｌ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、タービン保護条件へ
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人口弁ｌ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ットされているのを圧
力スイッチ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人口弁１を徐々に開け、回転数を定
常回転数までゆっ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
リセットされているのを圧力スイッチ８で検知しない限
り再起動できないようになっているため、遠隔操作器６
の操作信号を開信号から全閉信号にリセットするのを忘
れタービン保護条件Ａの正常復帰により二方口電磁弁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、したがって、膨張タービン９はトリップしない
。Therefore, even if such an operation error occurs, the expansion turbine 9
The expansion turbine 9 can be prevented from tripping. In addition, if an abnormality occurs in the turbine protection condition A, the two-way solenoid valve 4 is activated by a signal from the sequence circuit 3, and the operation of the two-way solenoid valve 4 causes the turbine artificial valve 1 to be shut off and rotated. By stopping the expansion turbine 9, 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, it is confirmed that the turbine protection condition A has returned to normal and the turbine artificial valve l 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 artificial valve 1 is gradually opened by the operation signal from the remote controller 6, and the rotation speed is reduced to the steady rotation speed. This is done by slowly raising it. In this way, the remote controller 6 cannot be restarted unless the pressure switch 8 detects that the operation signal of the remote controller 6 has been reset from an open signal to a fully closed signal.
Forgetting to reset the operation signal from the open signal to the fully closed signal, the two-way solenoid valve 4
Even if the expansion turbine 9 is deactivated, the expansion turbine 9 will not be restarted and therefore the expansion turbine 9 will not trip.
本実施例のような膨張タービン保護装置では、運転誤操
作しても膨張タービンはトリップしないため、運転操作
を簡易化でき熟練を必要としない。In the expansion turbine protection device as in this embodiment, the expansion turbine does not trip even if an erroneous operation is performed, so the 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人口弁の弁駆動回路に開方向の遅れ
要素を持たせ、タービン人口弁の遠隔操作信号回路に全
閉操作信号要素を持たせたことで、運転誤操作しても膨
張タービンはトリップしないので、運転操作を簡易化で
き熟練を必要としないといった効果がある。As explained above, the present invention provides a valve drive circuit for a turbine valve that controls the rotational speed of an expansion turbine with a delay element in the opening direction, and a remote control signal circuit for the turbine valve that includes a fully closed operation signal element. By having this, the expansion turbine will not trip even if an operation error occurs, which has the effect of simplifying operation and requiring no skill.
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。
ｌ・・・・・・タービン人口弁、２・・・・・・弁駆動
回路、３・・・・・・シーケンス回路、４・・・・・・
二方口電磁弁、５・・・ニードル弁、６・・・・・・遠
隔操作器、７・・・・・・遠隔操作信号回路、８・・・
・・・圧力スイッチ、９・・・・・・膨張タービン
代理人 弁理士 高 橋 明 夫The drawing is a system diagram showing one embodiment of the expansion turbine protection device according to the present invention. l... Turbine artificial valve, 2... Valve drive circuit, 3... Sequence circuit, 4...
Two-way solenoid valve, 5... Needle valve, 6... Remote controller, 7... Remote control signal circuit, 8...
...Pressure switch, 9...Expansion turbine agent Patent attorney Akio Takahashi
Claims (1)
弁駆動回路に開方向の遅れ要素を持たせ、前記タービン
人口弁の遠隔操作信号回路に全閉操作信号検知要素なせ
だせたことを特徴とする膨張タービン保護装置。1. A valve drive circuit of a turbine artificial valve that controls the rotation speed of the expansion turbine is provided with a delay element in the opening direction, and a fully closed operation signal detection element is provided in the remote control signal circuit of the turbine artificial valve. Expansion turbine protection device.
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 true JPS59188002A (en) | 1984-10-25 |
| JPH0330686B2 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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012021410A (en) * | 2010-07-12 | 2012-02-02 | Ihi Corp | Starting method of steam turbine |
-
1984
- 1984-03-30 JP JP6064284A patent/JPS59188002A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012021410A (en) * | 2010-07-12 | 2012-02-02 | Ihi Corp | Starting method of steam turbine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0330686B2 (en) | 1991-05-01 |
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