JPH0861094A - Fuel supply device of gas turbine engine - Google Patents
Fuel supply device of gas turbine engineInfo
- Publication number
- JPH0861094A JPH0861094A JP19880894A JP19880894A JPH0861094A JP H0861094 A JPH0861094 A JP H0861094A JP 19880894 A JP19880894 A JP 19880894A JP 19880894 A JP19880894 A JP 19880894A JP H0861094 A JPH0861094 A JP H0861094A
- Authority
- JP
- Japan
- Prior art keywords
- feeding means
- actuator
- fuel
- circulation line
- downstream side
- 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
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
- Check Valves (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、燃料を燃焼器に供給す
るためのガスタービンエンジンの燃料供給装置（以下、
単に燃料供給装置という。）に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fuel supply device for a gas turbine engine (hereinafter referred to as "fuel supply device") for supplying fuel to a combustor.
It is simply called a fuel supply device. ).
【０００２】[0002]
【従来の技術】従来の燃料供給装置としては、図３に示
すように、燃料を、メインライン１に設けられた、ブー
ストポンプ２、エンジンの回転により回転させられる低
圧ポンプ３、凍結防止用の熱交換器４、フィルター５、
ギヤーポンプ６をこの順で経由して、調整弁７に供給
し、調整弁７から燃焼器８に向けて供給するようにして
いる。また、前記低圧ポンプ３と熱交換器４との間から
調整弁７に向けて循環ライン９が配置されており、さら
に、前記ギヤーポンプ６と調整弁７との間から分岐して
前記循環ライン９に向けて配置された分岐ライン１０に
は、例えばベーンの角度調整を行うためのアクチュエー
タ１１が配置されている。2. Description of the Related Art As a conventional fuel supply device, as shown in FIG. 3, a fuel is provided in a main line 1, a boost pump 2, a low pressure pump 3 which is rotated by rotation of an engine, and an antifreeze device. Heat exchanger 4, filter 5,
The gear pump 6 is supplied in this order to the adjusting valve 7 and then from the adjusting valve 7 toward the combustor 8. A circulation line 9 is arranged between the low-pressure pump 3 and the heat exchanger 4 toward the regulating valve 7, and the circulation line 9 is branched from between the gear pump 6 and the regulating valve 7. An actuator 11 for adjusting the angle of the vane, for example, is arranged on the branch line 10 arranged toward the.
【０００３】ここで、エンジン運転中における燃料の流
れは、ブーストポンプ２、低圧ポンプ３、熱交換器４、
フィルタ５、ギヤーポンプ６、コントロ−ラ７、燃焼器
８に供給される。余剰の燃料は、調整弁７、循環ライン
９、熱交換器４の上流側に流れる。アクチュエータ１１
への燃料は、ギヤポンプ６の吐出側から供給されるが、
フィルタ５を通っており、ゴミが除去されている。Here, the flow of fuel during engine operation is as follows: boost pump 2, low pressure pump 3, heat exchanger 4,
It is supplied to the filter 5, the gear pump 6, the controller 7, and the combustor 8. The surplus fuel flows upstream of the regulating valve 7, the circulation line 9 and the heat exchanger 4. Actuator 11
Is supplied from the discharge side of the gear pump 6,
It has passed through the filter 5 and dust has been removed.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来の
燃料供給装置では、アクチュエータ１１を修理して交換
し、配管を復旧してエンジンを始動した場合、循環ライ
ン９を通ってアクチュエータ１１内をフィルタ５を通ら
ない燃料が流れ、アクチュエータ１１内にゴミが入り込
む不具合があった。However, in the conventional fuel supply system, when the actuator 11 is repaired and replaced, the piping is restored and the engine is started, the filter 5 is passed through the circulation line 9 to the inside of the actuator 11. There was a problem that the fuel that did not pass through flowed into the actuator 11 with dust.
【０００５】即ち、アクチュエータ１１を修理して交換
した後配管を復旧した場合、アクチュエータ１１内およ
び循環ライン９は空になっている。配管復旧後、エンジ
ンを始動させる場合、低圧ポンプおよびギヤポンプ６を
運転させる前にブーストポンプ２を運転させるが、この
状態では、低圧ポンプ３およびギヤポンプ６は運転され
ていないため、燃料はギヤポンプ６内を流れずに、空に
なっている循環ライン９およびアクチュエータ１１を通
ってギヤポンプ６の下流側へ流れる。つまり、フィルタ
５を通らない燃料がアクチュエータ１１内を流れる。That is, when the piping is restored after the actuator 11 is repaired and replaced, the inside of the actuator 11 and the circulation line 9 are empty. When the engine is started after the piping is restored, the boost pump 2 is operated before operating the low-pressure pump and the gear pump 6, but in this state, the low-pressure pump 3 and the gear pump 6 are not in operation, so that fuel is stored in the gear pump 6. Flow through the empty circulation line 9 and actuator 11 to the downstream side of the gear pump 6. That is, the fuel that does not pass through the filter 5 flows in the actuator 11.
【０００６】このため、ゴミがアクチュエータ１１の内
部、特にアクチュエータの構成部品であるトルクモー
タ、スリーブプランジャ等の隙間の小さな所に入り込
み、作動不良の原因となっていた。As a result, dust has entered the inside of the actuator 11, especially the small parts such as the torque motor and the sleeve plunger, which are components of the actuator, and causes malfunction.
【０００７】本発明は、上記事情に鑑みてなされたもの
で、アクチュエータの内部へのゴミの侵入が防止でき、
アクチュエータの動作の信頼性を高めることができる燃
料供給装置を目的とする。The present invention has been made in view of the above circumstances, and it is possible to prevent dust from entering the inside of the actuator,
An object of the present invention is to provide a fuel supply device that can improve the reliability of operation of an actuator.
【０００８】[0008]
【課題を解決するための手段】本発明の燃料供給装置
は、１段目の燃料圧送手段から２段目の燃料圧送手段を
経て燃焼器に至るメインラインと、前記２段目の圧送手
段の下流側と前記１段目の圧送手段の下流側とを結ぶ循
環ラインと、前記２段目の燃料圧送手段の下流側から前
記循環ライン向けて配置された分岐ラインに設けられ、
前記２段目の燃料圧送手段の下流側と前記循環ラインの
差圧で作動するアクチュエータとを備えたガスタービン
エンジンの燃料供給装置であって、前記分岐ラインの前
記循環ラインとの分岐点と、前記アクチュエータとの間
に逆止弁が介装されたことを特徴とする。The fuel supply system of the present invention comprises a main line from the first-stage fuel pressure feeding means to the second-stage fuel pressure feeding means to the combustor, and the second-stage pressure feeding means. A circulation line connecting the downstream side and the downstream side of the first-stage pressure feeding means, and a branch line arranged from the downstream side of the second-stage fuel pressure feeding means toward the circulation line,
A fuel supply device for a gas turbine engine, comprising a downstream side of the second-stage fuel pressure feeding means and an actuator that operates at a differential pressure of the circulation line, the branch point of the branch line with the circulation line, A check valve is provided between the actuator and the actuator.
【０００９】[0009]
【作用】本発明の燃料供給装置によれば、燃料が循環ラ
インを逆流して、前記分岐ラインの前記循環ラインとの
分岐点から前記アクチュエータに向けて、燃料が流れよ
うとしても、逆止弁により流入が阻止され、したがっ
て、逆流によりゴミがアクチュエータ内に侵入すること
が未然に防止される。According to the fuel supply device of the present invention, even if the fuel flows backward through the circulation line and the fuel is about to flow from the branch point of the branch line with the circulation line toward the actuator, the check valve. This prevents the inflow of dust, and therefore prevents the backflow of dust from entering the actuator.
【００１０】[0010]
【実施例】以下に、図面を参照して、本発明の一実施例
の燃料供給装置について説明する。なお、図３に示す燃
料供給装置と同様な構成要素には同一符号を付して説明
する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A fuel supply system according to an embodiment of the present invention will be described below with reference to the drawings. The same components as those of the fuel supply system shown in FIG. 3 will be described with the same reference numerals.
【００１１】図１に示すように、メインライン１には、
ブーストポンプ２、エンジンの回転により回転させられ
る低圧ポンプ３、凍結防止用の熱交換器４、フィルター
５、ギヤーポンプ６がこの順で配置され、さらに、メイ
ンライン１には、調整弁７、燃焼器８が配置されてい
る。前記低圧ポンプ３と熱交換器４との間から調整弁７
に向けて循環ライン９が配置されており、さらに、前記
ギヤーポンプ６と調整弁７との間から分岐して前記循環
ライン９に向けて配置された分岐ライン１０には、例え
ばベーンの角度調整を行うためのアクチュエータ１１が
配置されている。また、前記分岐ライン１０の循環ライ
ン９との分岐点１３と、アクチュエータ１１との間に逆
止弁１２が介装されている。なお、前記ブーストポンプ
２及び低圧ポンプ３は、本発明の１段目の燃料圧送手段
に相当し、前記ギヤーポンプ６は、本発明の２段目の燃
料圧送手段に相当する。As shown in FIG. 1, in the main line 1,
A boost pump 2, a low-pressure pump 3 rotated by the rotation of the engine, a heat exchanger 4 for freeze prevention, a filter 5, and a gear pump 6 are arranged in this order, and further, in the main line 1, a regulating valve 7 and a combustor. 8 are arranged. Between the low pressure pump 3 and the heat exchanger 4, a regulating valve 7
A circulation line 9 is arranged toward the circulation line 9, and a branch line 10 that is branched from between the gear pump 6 and the adjusting valve 7 and arranged toward the circulation line 9 is provided with, for example, a vane angle adjustment. An actuator 11 for performing the operation is arranged. Further, a check valve 12 is interposed between a branch point 13 of the branch line 10 and the circulation line 9 and the actuator 11. The boost pump 2 and the low-pressure pump 3 correspond to the first-stage fuel pressure feeding means of the present invention, and the gear pump 6 corresponds to the second-stage fuel pressure feeding means of the present invention.
【００１２】この逆止弁１２は、図２に示すように、バ
ルブボディ１２ａに設けられた燃料通路１２ｂには、バ
ネ１４により閉弁付勢された弁体１５が配置されてい
る。この弁体１５はバルブヘッド１５ａとバルブステム
１５ｂとからなり、バルブヘッド１５ａとバルブボディ
１２ａとの間は、ギヤーポンプ６側の燃料通路１２ｂ内
に充満した燃料により摺動自在に潤滑されている。As shown in FIG. 2, the check valve 12 has a valve body 15 which is biased by a spring 14 in a fuel passage 12b provided in a valve body 12a. The valve body 15 comprises a valve head 15a and a valve stem 15b, and the space between the valve head 15a and the valve body 12a is slidably lubricated by the fuel filled in the fuel passage 12b on the gear pump 6 side.
【００１３】次に、本実施例の燃料供給装置の作用につ
いて説明する。Next, the operation of the fuel supply system of this embodiment will be described.
【００１４】エンジン運転中における燃料の流れは、ブ
ーストポンプ２、低圧ポンプ３、熱交換器４、フィルタ
５、ギヤーポンプ６、コントロ−ラ７、燃焼器８を通
り、循環流量の流れは、調整弁７、循環ライン９、熱交
換器４を流れ、アクチュエータ１１には、フィルタ５を
通ってゴミが除去された燃料が供給される。これによ
り、アクチュエータ１１がメインライン１と循環ライン
９との差圧に応じて駆動され、例えばベーンの角度調整
が行われる。The fuel flow during engine operation passes through the boost pump 2, the low pressure pump 3, the heat exchanger 4, the filter 5, the gear pump 6, the controller 7 and the combustor 8, and the flow of the circulating flow is the regulating valve. 7, the circulation line 9, and the heat exchanger 4, and the actuator 11 is supplied with fuel from which dust has been removed through the filter 5. As a result, the actuator 11 is driven according to the pressure difference between the main line 1 and the circulation line 9, and, for example, the angle of the vane is adjusted.
【００１５】ここで、アクチュエータ１１を取り付けた
時又は交換した時、アクチュエータ１１内の燃料通路１
２ｂに燃料が充満されていないので、ブーストポンプ２
のみを作動させると、燃料はブーストポンプ２、低圧ポ
ンプ３、循環ライン９、調整弁７を通った流れとなる。
この燃料が分岐点１３から分岐ライン１０に向けて逆流
しようとするが、逆止弁１２により逆流が阻止される。Here, when the actuator 11 is attached or replaced, the fuel passage 1 in the actuator 11 is
2b is not full of fuel, so boost pump 2
When only one is operated, the fuel flows through the boost pump 2, the low pressure pump 3, the circulation line 9 and the regulating valve 7.
This fuel tries to flow backward from the branch point 13 toward the branch line 10, but the check valve 12 blocks the reverse flow.
【００１６】したがって、従来のように、循環ライン９
からゴミがアクチュエータ１１の内部に入り込むことが
未然に防止され、アクチュエータ１１の作動不良が発生
することが未然に防止される。Therefore, as in the conventional case, the circulation line 9
Therefore, dust is prevented from entering the inside of the actuator 11, and malfunction of the actuator 11 is prevented from occurring.
【００１７】また、逆止弁１２の弁体１５のバルブステ
ム１５ｂ側に充填される燃料は、フィルタ５によりゴミ
が除去されたものであるので、ゴミがアクチュエータ１
１内に侵入することがなく、バルブステム１５ｂの摺動
動作の信頼性を確保することができる。Further, since the dust filled in the fuel filling the valve stem 15b side of the valve body 15 of the check valve 12 is removed by the filter 5, the dust is the actuator 1
It is possible to ensure the reliability of the sliding operation of the valve stem 15b without invading the inside of the valve 1.
【００１８】なお、図２で示した逆止弁１２は一実施例
であり、他の周知な逆止弁を用いることができることは
いうまでもない。It is needless to say that the check valve 12 shown in FIG. 2 is an embodiment and other known check valves can be used.
【００１９】[0019]
【発明の効果】以上説明したように、本発明の燃料供給
装置によれば、１段目の燃料圧送手段から２段目の燃料
圧送手段を経て燃焼器に至るメインラインと、前記２段
目の圧送手段の下流側と前記１段目の圧送手段の下流側
とを結ぶ循環ラインと、前記２段目の燃料圧送手段の下
流側から前記循環ライン向けて配置された分岐ラインに
設けられ、前記２段目の燃料圧送手段の下流側と前記循
環ラインの差圧で作動するアクチュエータとを備えたガ
スタービンエンジンの燃料供給装置であって、前記分岐
ラインの前記循環ラインとの分岐点と、前記アクチュエ
ータとの間に逆止弁が介装されているので、アクチュエ
ータ内部へのゴミの侵入が防止でき、アクチュエータの
動作の信頼性を高めることができる。As described above, according to the fuel supply system of the present invention, the main line from the first-stage fuel pressure feeding means to the second-stage fuel pressure feeding means to the combustor, and the second-stage fuel pressure feeding means. A circulation line connecting the downstream side of the first pressure-feeding means and the downstream side of the first-stage pressure-feeding means, and a branch line arranged from the downstream side of the second-stage fuel pressure-feeding means toward the circulation line. A fuel supply device for a gas turbine engine, comprising a downstream side of the second-stage fuel pressure feeding means and an actuator that operates at a differential pressure of the circulation line, the branch point of the branch line with the circulation line, Since the check valve is interposed between the actuator and the actuator, it is possible to prevent dust from entering the inside of the actuator and improve the reliability of the operation of the actuator.
【図１】本発明の一実施例の燃料供給装置を示す図であ
る。FIG. 1 is a diagram showing a fuel supply device according to an embodiment of the present invention.
【図２】図１中の逆止弁の一実施例を示す断面図であ
る。FIG. 2 is a cross-sectional view showing an embodiment of the check valve in FIG.
【図３】従来の燃料供給装置を示す図である。FIG. 3 is a diagram showing a conventional fuel supply device.
１ メインライン ２ ブーストポンプ（１段目の燃料圧送手段） ３ 低圧ポンプ（１段目の燃料圧送手段） ５ フィルタ ６ ギヤ−ポンプ（２段目の燃料圧送手段） ７ 調整弁 ８ 燃焼器 ９ 循環ライン １０ 分岐ライン １１ アクチュエータ １２ 逆止弁 １３ 分岐点 1 Main Line 2 Boost Pump (First Stage Fuel Pressure Feeding Means) 3 Low Pressure Pump (First Stage Fuel Pressure Feeding Means) 5 Filter 6 Gear Pump (Second Stage Fuel Pressure Feeding Means) 7 Regulator Valve 8 Combustor 9 Circulation Line 10 Branch line 11 Actuator 12 Check valve 13 Branch point
Claims (1)
圧送手段を経て燃焼器に至るメインラインと、前記２段
目の圧送手段の下流側と前記１段目の圧送手段の下流側
とを結ぶ循環ラインと、前記２段目の燃料圧送手段の下
流側から前記循環ライン向けて配置された分岐ラインに
設けられ、前記２段目の燃料圧送手段の下流側と前記循
環ラインの差圧で作動するアクチュエータとを備えたガ
スタービンエンジンの燃料供給装置であって、前記分岐
ラインの前記循環ラインとの分岐点と、前記アクチュエ
ータとの間に逆止弁が介装されたことを特徴とするガス
タービンエンジンの燃料供給装置。1. A main line from a first-stage fuel pressure feeding means to a combustor through a second-stage fuel pressure feeding means, a downstream side of the second-stage pressure feeding means, and a downstream side of the first-stage pressure feeding means. Is provided in a branch line arranged from the downstream side of the second-stage fuel pressure feeding means toward the circulation line, and between the downstream side of the second-stage fuel pressure feeding means and the circulation line. A fuel supply device for a gas turbine engine including an actuator that operates at a differential pressure, wherein a check valve is interposed between a branch point of the branch line with the circulation line and the actuator. A characteristic gas turbine engine fuel supply device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19880894A JP3355799B2 (en) | 1994-08-23 | 1994-08-23 | Gas turbine engine fuel supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19880894A JP3355799B2 (en) | 1994-08-23 | 1994-08-23 | Gas turbine engine fuel supply system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0861094A true JPH0861094A (en) | 1996-03-05 |
| JP3355799B2 JP3355799B2 (en) | 2002-12-09 |
Family
ID=16397259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19880894A Expired - Lifetime JP3355799B2 (en) | 1994-08-23 | 1994-08-23 | Gas turbine engine fuel supply system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3355799B2 (en) |
-
1994
- 1994-08-23 JP JP19880894A patent/JP3355799B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP3355799B2 (en) | 2002-12-09 |
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Legal Events
| Date | Code | Title | Description |
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