JPH0151659B2 - - Google Patents
Info
- Publication number
- JPH0151659B2 JPH0151659B2 JP19466883A JP19466883A JPH0151659B2 JP H0151659 B2 JPH0151659 B2 JP H0151659B2 JP 19466883 A JP19466883 A JP 19466883A JP 19466883 A JP19466883 A JP 19466883A JP H0151659 B2 JPH0151659 B2 JP H0151659B2
- Authority
- JP
- Japan
- Prior art keywords
- stop
- cylinder
- pressure fluid
- solenoid valve
- fuel
- 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
- 239000000446 fuel Substances 0.000 claims description 30
- 239000012530 fluid Substances 0.000 claims description 11
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0205—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine
- F02M63/022—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine by acting on fuel control mechanism
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Stopping Of Electric Motors (AREA)
- High-Pressure Fuel Injection Pump Control (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は、非常用デイーゼル発電機の停止装置
（以下、単に停止装置という）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 a stop device for an emergency diesel generator (hereinafter simply referred to as a stop device).
従来の停止装置は、停止信号によつて停止用電
磁弁が開かれ、停止用ピストンの挿入されている
停止用シリンダ内に圧縮空気が供給され、これに
よつて停止用ピストンを摺動させて燃料加減軸を
燃料減の方向に動かし、燃料噴射を停止させるの
で非常用デイーゼル発電機が停止するようになつ
ている。
In conventional stop devices, a stop solenoid valve is opened in response to a stop signal, compressed air is supplied into a stop cylinder in which a stop piston is inserted, and this causes the stop piston to slide. The fuel adjustment shaft is moved in the direction of decreasing fuel and fuel injection is stopped, thereby stopping the emergency diesel generator.
そして、第１図は従来の非常用デイーゼル発電
機の起動特性及び停止信号直後の再起動特性を示
す図である。 FIG. 1 is a diagram showing the starting characteristics and restarting characteristics immediately after a stop signal of a conventional emergency diesel generator.
この図から判るように、一旦停止信号を発した
直後に再起動する場合には、遊び時間が生じ立上
り時間T2が長くなることが判る。因みに、通常
の立上り時間T1が約10秒であるのに対し、停止
信号直後の再起動時の立上り時間T2は13〜15秒
である。 As can be seen from this figure, when restarting immediately after once issuing a stop signal, idle time occurs and the rise time T 2 becomes longer. Incidentally, while the normal rise time T1 is about 10 seconds, the rise time T2 at the time of restart immediately after the stop signal is 13 to 15 seconds.
これは再起動信号によつて燃料加減軸を燃料増
方向へ摺動させようとするが、停止信号直後には
停止用シリンダ内に圧縮空気が残存しており、こ
の残存圧縮空気が燃料加減軸の燃料増方向への掴
動を妨げるために遊び時間が生じ、それだけ立ち
上りに時間がかかるのである。 This is because the restart signal attempts to move the fuel adjustment shaft in the direction of fuel increase, but immediately after the stop signal, compressed air remains in the stop cylinder, and this residual compressed air moves the fuel adjustment shaft. An idle time occurs because this prevents the engine from grasping the fuel in the direction of increasing fuel, and it takes that much time for the engine to start up.
非常用デイーゼル発電機の運転中に（例えばサ
ーベラントテスト時に）、この非常用デイーゼル
発電機を停止させた直後に、何らかの原因（例え
ば地震）によつて常用デイーゼル発電機が停止し
た場合、早急に非常用デイーゼル発電機を定格運
転させたい場合がある。特に原子炉高圧時には炉
心冷却水を一刻も早く供給することが望まれ、数
秒の遅れが大事となる虞れがある。 If the regular diesel generator stops for some reason (e.g. earthquake) immediately after the emergency diesel generator is stopped while the emergency diesel generator is in operation (e.g. during a surveillance test), immediately There are cases where it is desired to operate the emergency diesel generator at its rated capacity. Particularly when reactor pressure is high, it is desirable to supply core cooling water as quickly as possible, and a delay of several seconds may be important.
なお、停止信号によつて停止用シリンダ内に供
給された圧縮空気は、停止用電磁弁の隙間から徐
徐に漏れ、停止用シリンダ内の圧力は次第に大気
圧に等しくなるようになつているので、停止信号
後しばらくたつて後に再起動する場合には問題は
ない。 The compressed air supplied into the stop cylinder by the stop signal gradually leaks from the gap in the stop solenoid valve, and the pressure inside the stop cylinder gradually becomes equal to atmospheric pressure. There is no problem if the device restarts some time after the stop signal.
本発明の目的は、非常用デイーゼル発電機に対
し、発電機停止信号を発した直後に再起動させる
際の立上り時間を短縮することにある。
An object of the present invention is to shorten the startup time when restarting an emergency diesel generator immediately after issuing a generator stop signal.
本発明は、停止用電磁弁と停止用シリンダ間の
圧力流体供給用管路途中に、起動信号によつて作
動し、停止用シリンダ内の圧力流体を外部に放出
する残留圧力流体排出用電磁弁を設置したことを
特徴とするもので、これによつて前記目的が達成
される。
The present invention provides a residual pressure fluid discharge solenoid valve that is operated by a start signal and discharges the pressure fluid in the stop cylinder to the outside, in the middle of the pressure fluid supply pipe between the stop solenoid valve and the stop cylinder. This is characterized in that the above object is achieved.
以下、本発明の実施例を図面に基づいて説明す
る。
Embodiments of the present invention will be described below based on the drawings.
第２図において本実施例に係わる停止信号１
は、燃料噴射ポンプ２内に噴射される燃料を増減
する燃料加減軸４と、この燃料加減軸４にリンク
機構６を介して連結され停止用シリンダ８内に挿
入された停止用ピストン１０と、このシリンダ８
内に圧縮空気を供給する空気圧縮機１２とから構
成され、圧縮空気は空気圧縮機１２によつて充気
された空気溜１４から管路１６によつてシリンダ
８内に供給されるようになつている。 In FIG. 2, stop signal 1 according to this embodiment
A fuel adjustment shaft 4 that increases or decreases the amount of fuel injected into the fuel injection pump 2; a stop piston 10 connected to the fuel adjustment shaft 4 via a link mechanism 6 and inserted into a stop cylinder 8; This cylinder 8
An air compressor 12 supplies compressed air into the cylinder 8, and compressed air is supplied into the cylinder 8 from an air reservoir 14 filled with air by the air compressor 12 through a conduit 16. ing.
また、この管路１６の途中には停止用電磁弁１
８が設けられ、起動及び停止用制御回路１９から
のエンジン停止信号によつて励磁されて弁が開
き、圧縮空気がシリンダ８内に供給されるように
なつている。さらに、停止用電磁弁１８とシリン
ダ８との間の管路途中に、分岐管路１７が設けら
れ、この分岐管路１７の先端部に残留空気排出用
電磁弁２０が設けられている。この残留空気排出
用電磁弁２０は制御回路１９からのエンジン起動
信号によつて励磁されて弁が開き、シリンダ８と
停止用電磁弁１８間の管路に充気されている圧縮
空気を大気中に放出するようになつている。 In addition, a stop solenoid valve 1 is provided in the middle of this pipe line 16.
8 is provided, and is energized by an engine stop signal from a start and stop control circuit 19 to open the valve and supply compressed air into the cylinder 8. Further, a branch line 17 is provided in the middle of the line between the stop electromagnetic valve 18 and the cylinder 8, and a residual air discharge electromagnetic valve 20 is provided at the tip of this branch line 17. This residual air discharge solenoid valve 20 is excited by the engine start signal from the control circuit 19, opens the valve, and discharges the compressed air filled in the pipe between the cylinder 8 and the stop solenoid valve 18 to the atmosphere. It is now being released into the world.
一方、符号２１はこの非常用デイーゼル発電機
の起動装置を示すもので、空気留１４から管路２
２が始動電磁弁２４及び始動空気分配弁２６を介
してエンジンの各シリンダ（図示せず）内に延び
ており、制御回路１９からのエンジン起動信号に
よつて始動電磁弁２４が励磁されて弁が開き、エ
ンジンの各シリンダ内へ圧縮空気が供給され、起
動トルクを発生するようになつている。 On the other hand, the reference numeral 21 indicates a starting device for this emergency diesel generator, which connects the air reservoir 14 to the pipe line 2.
2 extends into each cylinder (not shown) of the engine via a starting solenoid valve 24 and a starting air distribution valve 26, and the starting solenoid valve 24 is energized by an engine starting signal from the control circuit 19 to open the valve. is opened, compressed air is supplied into each cylinder of the engine, and starting torque is generated.
なお、符号２８は燃料噴射用制御用のガバナ
で、エンジン起動信号によつてエンジンが低速回
転し始め、これに伴つて燃料加減軸４を燃料増方
向へ摺動させる作用をするものである。 Reference numeral 28 is a governor for fuel injection control, which functions to cause the engine to start rotating at a low speed in response to an engine start signal, and to move the fuel adjusting shaft 4 in the fuel increasing direction accordingly.
次に、本実施例に係わる停止装置の作用を説明
する。 Next, the operation of the stopping device according to this embodiment will be explained.
まず、非常用デイーゼル発電機を定格速度で運
転中に、制御回路１９から停止信号が発せられる
と、停止用電磁弁１８が励磁され弁が開いて管路
１６が開口され、空気溜４４から圧縮空気がシリ
ンダ８内に流入する。そして停止用ピストン１０
が押圧されて第２図矢印Ａ方向に摺動し、リンク
機構６によつて燃料加減軸４が矢印Ｂ方向（燃料
減方向）に摺動する。そのため、燃料噴射ポンプ
２の燃料の噴射が停止され、発電気の駆動が停止
する。 First, when a stop signal is issued from the control circuit 19 while the emergency diesel generator is operating at the rated speed, the stop solenoid valve 18 is energized, the valve opens, and the pipe line 16 is opened, causing the air reservoir 44 to be compressed. Air flows into the cylinder 8. and stopping piston 10
is pressed and slides in the direction of arrow A in FIG. 2, and the link mechanism 6 causes the fuel adjustment shaft 4 to slide in the direction of arrow B (fuel reduction direction). Therefore, the injection of fuel from the fuel injection pump 2 is stopped, and the drive of the electric power generation is stopped.
この停止信号直後に再起動させる場合には、制
御回路１９からの再起動信号（手動、あるいは自
動いずれでもよい）によつて始動電磁弁２４が開
となり、空気溜１４から圧縮空気が分配弁２６を
介して各エンジンのシリンダ内に供給される。こ
れによつてエンジンは起動トルクを生じガバナ２
８の働きにより燃料加減軸４を第２図矢印Ｃ方向
（燃料増方向）に動かし、エンジンは定格速度に
立上つていく。 When restarting immediately after this stop signal, the starting solenoid valve 24 is opened by a restart signal (manual or automatic) from the control circuit 19, and compressed air is supplied from the air reservoir 14 to the distribution valve 26. It is supplied into each engine cylinder through the As a result, the engine generates a starting torque and the governor 2
8 moves the fuel adjustment shaft 4 in the direction of arrow C in FIG. 2 (fuel increase direction), and the engine starts up to the rated speed.
一方、この再起動信号により、停止用電磁弁１
８が閉じると共に、残留空気放出用電磁弁２０が
開となり、シリンダ８内の残留圧縮空気が大気中
に放出される。そのため燃料加減軸４は迅速に摺
動し、第３図に示されるように、立上り時間T2
は従来のものに比べて短くなる。 On the other hand, this restart signal causes the stop solenoid valve 1 to
8 is closed, the residual air release solenoid valve 20 is opened, and the residual compressed air in the cylinder 8 is released into the atmosphere. Therefore, the fuel adjustment shaft 4 slides quickly, and as shown in FIG. 3, the rise time T 2
is shorter than the conventional one.
第３図では、本実施例の再起動時の立上り特性
が実線で示されており、本実施例における再起動
時の立上り曲線には仮想線で示される従来の再起
動時の立上り曲線と比べて遊び時間が生じないた
め、その分、早く立ち上がつて定格速度に達する
ことが判る。 In FIG. 3, the restart characteristic of this embodiment is shown by a solid line, and the restart curve of this embodiment is compared with the conventional restart rise curve shown by a phantom line. It can be seen that since there is no idle time, the engine starts up faster and reaches the rated speed.
第４図において、本実施例に係る停止装置の起
動および停止制御回路１９の回路図を示す。 FIG. 4 shows a circuit diagram of the start and stop control circuit 19 of the stop device according to this embodiment.
符号３１は起動用手動操作スイツチ、３２はエ
ンジンの回転速度が定格速度の50％以下のときオ
フ（OFF）となる低速度接点、３３は励磁され
るとＡ接点をオン（ON）とする補助リレー、３
４は始動電磁弁コイル、３５は自動起動信号によ
りONとなる自動起動接点、３６は励磁されると
Ｂ接点をONとする補助リレー、３７は停止用電
磁弁コイル、３８は接点Ｔを60秒間ON状態に保
持するタイマ、３９は停止用手動操作スイツチ、
４０は残留圧縮空気排出電磁弁コイルである。 Reference numeral 31 is a manually operated switch for starting, 32 is a low speed contact that turns off when the engine speed is less than 50% of the rated speed, and 33 is an auxiliary switch that turns on the A contact when excited. relay, 3
4 is a starting solenoid valve coil, 35 is an automatic starting contact that is turned on by an automatic starting signal, 36 is an auxiliary relay that turns on the B contact when excited, 37 is a stopping solenoid valve coil, and 38 is a contact T that is turned on for 60 seconds. A timer to keep it in the ON state, 39 is a manual operation switch for stopping,
40 is a residual compressed air discharge solenoid valve coil.
これらの図において、まず起動用手動操作スイ
ツチ３１を入れると、補助リレー３３によつて接
点ＡがONとなり、コイル３４が励磁され始動電
磁弁２４が開となつてエンジンの各シリンダ内に
圧縮空気が供給されて起動トルクが発生する。そ
して次第にエンジンは第１図に示されるように、
定格速度に立ち上がつていく。 In these figures, when the starting manual operation switch 31 is first turned on, contact A is turned on by the auxiliary relay 33, the coil 34 is energized, the starting solenoid valve 24 is opened, and compressed air is supplied to each cylinder of the engine. is supplied to generate starting torque. Then, the engine gradually becomes as shown in Figure 1.
It will start up to the rated speed.
一方、運転中に停止用操作スイツチ３９を入れ
ると、補助リレー３６によつて接点ＢがONとな
り、コイル３７が励磁されて停止用電磁弁１８が
開となつて停止用ピストン１０をして燃料加減軸
４を燃料減方向に動かし、そしてエンジンは停止
する。 On the other hand, when the stop operation switch 39 is turned on during operation, the contact B is turned on by the auxiliary relay 36, the coil 37 is energized, the stop solenoid valve 18 is opened, and the stop piston 10 is turned on to fuel the fuel. The adjustment shaft 4 is moved in the direction of fuel reduction, and the engine is stopped.
次に、停止用操作スイツチ３９を入れた直後に
再起動させる場合には、起動用手動操作スイツチ
３１をONとすることにより、コイル４０が励磁
され、残留空気排出用電磁弁２０が開となつて停
止用シリンダ８内の残留圧縮空気が外部に放出さ
れることとなる。 Next, when restarting immediately after turning on the stop operation switch 39, by turning on the start manual operation switch 31, the coil 40 is energized and the residual air discharge solenoid valve 20 is opened. The residual compressed air in the stop cylinder 8 is then released to the outside.
なお起動用操作スイツチ３１に代え、外部から
の自動起動信号によつて自動起動接点３５がON
となつた場合にも同様に残留空気排出弁２０が開
となつて残留圧縮空気が外部に放出されるように
なつている。 Note that instead of the starting operation switch 31, the automatic starting contact 35 is turned on by an external automatic starting signal.
In this case, the residual air discharge valve 20 is similarly opened and the residual compressed air is discharged to the outside.
以上の説明から明らかなように、本発明によれ
ばエンジン停止信号直後の再起動の要請に応じ、
短時間のうちに発電機を定格速度に立上らせるこ
とができる。
As is clear from the above description, according to the present invention, in response to a request for restart immediately after an engine stop signal,
The generator can be brought up to its rated speed in a short time.
本発明は、原子炉の炉心冷却用設備、非常用照
明設備などの緊急を要し一秒でも早急に定格速度
に立上らせることの必要な非常用デイーゼル発電
機の停止装置として特に有益と考えられる。 The present invention is particularly useful as a stop device for emergency diesel generators such as nuclear reactor core cooling equipment and emergency lighting equipment that need to be brought up to rated speed as quickly as possible. Conceivable.
第１図は従来の非常用デイーゼル発電機の起動
特性及び再起動特性を示す図、第２図は本発明に
係わる停止装置の概略図、第３図は本発明に係わ
る停止装置を備えた非常用デイーゼル発電機の起
動特性及び再起動特性を示す図、第４図はその起
動および停止制御回路の回路図である。
４…燃料加減軸、１２…空気圧縮機、１８…停
止用電磁弁、１９…起動および停止制御回路、２
０…残留空気排出用電磁弁、３４…始動電磁弁。
Fig. 1 is a diagram showing the starting characteristics and restart characteristics of a conventional emergency diesel generator, Fig. 2 is a schematic diagram of a stopping device according to the present invention, and Fig. 3 is a diagram showing an emergency diesel generator equipped with a stopping device according to the present invention. FIG. 4 is a diagram showing the starting characteristics and restarting characteristics of the diesel generator for diesel generators, and FIG. 4 is a circuit diagram of its starting and stopping control circuit. 4...Fuel adjustment shaft, 12...Air compressor, 18...Stop solenoid valve, 19...Start and stop control circuit, 2
0... Solenoid valve for residual air discharge, 34... Starting solenoid valve.
Claims (1)
加減軸と、停止用シリンダに挿入されると共に前
記燃料加減軸と連結された停止用ピストンと、前
記停止用シリンダ内に圧力流体を供給する圧力流
体供給源と、この圧力流体供給源から前記停止用
シリンダ内への圧力流体供給用管路途中に設置さ
れ、停止信号によつて弁が開き停止用シリンダ内
へ圧力流体を供給する停止用電磁弁と、を備えた
非常用デイーゼル発電機の停止装置において、前
記停止用シリンダと停止用電磁弁間の圧力流体供
給用管路途中に、起動信号によつて弁が開き、停
止用シリンダ内の圧力流体を外部へ放出する残留
圧力流体排出用電磁弁を設置したことを特徴とす
る非常用デイーゼル発電機の停止装置。1. A fuel adjustment shaft that adjusts the fuel injection amount of the fuel injection pump, a stop piston that is inserted into a stop cylinder and connected to the fuel adjustment shaft, and a pressure fluid that supplies pressure fluid into the stop cylinder. a supply source, and a stop electromagnetic valve that is installed in the middle of a pressure fluid supply pipeline from the pressure fluid supply source to the stop cylinder, and opens in response to a stop signal to supply pressure fluid into the stop cylinder. In the stop device for an emergency diesel generator, the valve is opened in response to a start signal in the middle of the pressure fluid supply pipe between the stop cylinder and the stop solenoid valve, and the pressure inside the stop cylinder is An emergency diesel generator stop device characterized by installing a solenoid valve for discharging residual pressure fluid to discharge fluid to the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19466883A JPS6085226A (en) | 1983-10-18 | 1983-10-18 | Emergency diesel generator stop device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19466883A JPS6085226A (en) | 1983-10-18 | 1983-10-18 | Emergency diesel generator stop device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6085226A JPS6085226A (en) | 1985-05-14 |
| JPH0151659B2 true JPH0151659B2 (en) | 1989-11-06 |
Family
ID=16328317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19466883A Granted JPS6085226A (en) | 1983-10-18 | 1983-10-18 | Emergency diesel generator stop device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6085226A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002262465A (en) * | 2001-03-02 | 2002-09-13 | Niigata Eng Co Ltd | Load control device for diesel engine for generating power |
-
1983
- 1983-10-18 JP JP19466883A patent/JPS6085226A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002262465A (en) * | 2001-03-02 | 2002-09-13 | Niigata Eng Co Ltd | Load control device for diesel engine for generating power |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6085226A (en) | 1985-05-14 |
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