JPS61205339A - Fuel supply device - Google Patents

Fuel supply device

Info

Publication number
JPS61205339A
JPS61205339A JP4702885A JP4702885A JPS61205339A JP S61205339 A JPS61205339 A JP S61205339A JP 4702885 A JP4702885 A JP 4702885A JP 4702885 A JP4702885 A JP 4702885A JP S61205339 A JPS61205339 A JP S61205339A
Authority
JP
Japan
Prior art keywords
flow rate
fuel
fuel flow
engine
lower limit
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.)
Pending
Application number
JP4702885A
Other languages
Japanese (ja)
Inventor
Kazuhiko Matsumoto
松元 一彦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP4702885A priority Critical patent/JPS61205339A/en
Publication of JPS61205339A publication Critical patent/JPS61205339A/en
Pending legal-status Critical Current

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  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)

Abstract

PURPOSE:To enable worsening of fuel supply performance to be early detected, by calculating upper and lower limit fuel flows in a normal condition on the basis of a speed and an intake temperature of an engine while it is in starting and displaying abnormality when an actual fuel flow is not in a value between these upper and lower limit fuel flows. CONSTITUTION:A device provides detecting means 101-103 respectively detecting an engine speed, intake temperature and a fuel flow supplied to an engine. An arithmetic means 104, corresponding to detection signals of the engine speed and the intake temperature of the outputs of these detecting means 101-103, calculates upper and lower limit fuel flows necessary for the engine to normally generate an output. And the device, comparing in a comparing means 105 an output of said arithmetic means 104 with the output of the fuel flow detecting means 103, decides a fuel supply system being normal when the actual fuel flow is in a value between the upper and lower limit fuel flows while abnormal when the actual fuel flow is not in a value between the upper and lower limit fuel flows, displaying the decision result in a displaying means 106.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 この発明は例えば発電装置のエンジンに液体燃料を供給
する□に好適な燃料供給装置に関するものである′0 〔従来の技術〕 第6図は「電設工業J(1982年7月号)K記載され
たガスタービン発電装置の燃料供給系統図であり、図中
(1)はサービスタンク、り2)はこのサービスタンク
の燃料出側に設けられる低圧燃料フィルタ、(8)はこ
の低圧燃料フィルタ(2)によっでf過された燃料を″
送出するブースターポンプ、(4)は燃料を所定の圧力
に加圧して送出する高圧ポンプ、(6)゛は高圧ポンプ
の出側に設け゛られる高圧燃料・フィルタ、(6)は高
圧燃料フィルタを通った燃料を制御する燃料制御□弁、
(テ)は燃料しゃ新井、(8)は燃料ノズル、(9)は
燃焼器、叫はガスタービン、□(6)は負荷量の変動に
よる速度変動をなくするように燃料制御弁(6)を制御
するガバナ、四は発電機の巖適回転数に減速するための
ギヤーボックス、α呻はガスタ−ビンの回転速度を検出
する速度検出センサ、−は速度検出センサa場の信号と
図示しない速度指令との偏差分をガバナ(6)に加える
速度調節器をそれぞれ示す。
[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a fuel supply device suitable for supplying liquid fuel to the engine of a power generation device, for example. This is a fuel supply system diagram of the gas turbine power generator described in "Densetsu Kogyo J (July 1982 issue) K. In the diagram, (1) is a service tank, and 2) is provided on the fuel outlet side of this service tank. The low pressure fuel filter (8) filters the fuel passed through the low pressure fuel filter (2).
(4) is a high-pressure pump that pressurizes fuel to a predetermined pressure and sends it out; (6) is a high-pressure fuel filter installed on the outlet side of the high-pressure pump; (6) is a high-pressure fuel filter. Fuel control □ valve, which controls the fuel that passes through
(te) is the fuel tank, (8) is the fuel nozzle, (9) is the combustor, is the gas turbine, and (6) is the fuel control valve (6) to eliminate speed fluctuations due to load fluctuations. 4 is a gear box for decelerating the generator to an appropriate rotational speed, α is a speed detection sensor that detects the rotational speed of the gas turbine, - is the signal of the speed detection sensor a field (not shown) A speed regulator that adds the deviation from the speed command to the governor (6) is shown.

この第6図において、サービスタンク(1)の燃料は低
圧燃料フィルタ(2)を通って濾過された後、ブースタ
ーポンプ(8)によって高圧ポンプ(4)に送り込まれ
る。高圧ポンプ(4)はギヤーボックス四を介してガス
タービンに連結され、ブーターポンプ(8)から送シ込
まれた燃料を所定の圧力に加圧し、高圧燃料フィルタ(
6)を介してタービン叫に送り込む。
In FIG. 6, fuel in the service tank (1) is filtered through a low pressure fuel filter (2) and then pumped by a booster pump (8) to a high pressure pump (4). The high-pressure pump (4) is connected to the gas turbine via the gear box 4, pressurizes the fuel sent from the booter pump (8) to a predetermined pressure, and the high-pressure fuel filter (
6) into the turbine cry via.

このとき、ガバナ(6)の角度に応じて燃料制御弁(6
)が燃料流量を調節するので、ガスタービン(至)の回
転速度に対応した適切な量の燃料が燃料ノズル(8)か
ら噴射される。
At this time, the fuel control valve (6) is adjusted according to the angle of the governor (6).
) adjusts the fuel flow rate so that an appropriate amount of fuel corresponding to the rotational speed of the gas turbine (to) is injected from the fuel nozzle (8).

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

従来の燃料供給装置は以上のように構成されておシ、サ
ービスタンク(1)から燃料ノズル(8)までの関に多
数の要素が介在しており、しかも、ポンプや弁類は狭い
空間を移動する可動部を持っていることから故障しやす
く十分な燃料が供給されないことがあった0また、−例
として、ブースターポンプ(8)の動作不良によって高
圧ポンプ(4)の吸込側の燃料圧力が低すぎるとキャビ
テーションが発生して起動に失敗することがあった0 しかるに、この従来の装置はこれらの燃料供給性能の低
下を初期段階で検出する手段を持たなかったため、不測
の事態に対する不安が解消されずその分だけ信頼性に欠
けていた。
The conventional fuel supply system is constructed as described above, and many elements are interposed between the service tank (1) and the fuel nozzle (8), and the pump and valves occupy a narrow space. Because it has moving parts, it is prone to breakdowns and may not be able to supply enough fuel.For example, malfunction of the booster pump (8) may cause the fuel pressure on the suction side of the high-pressure pump (4) to drop. If the fuel supply performance is too low, cavitation may occur and startup may fail.0 However, this conventional device did not have a means to detect such deterioration in fuel supply performance at an early stage, so there was concern about unforeseen situations. The issue was not resolved and the reliability was lacking accordingly.

この発明はかかる問題点を解決するためになされたもの
で、燃料供給性能の低下を初期段階で検出し得、これに
よって信頼性を大幅に向上させ得る燃料供給装置の提供
を目的とする。
The present invention has been made to solve these problems, and aims to provide a fuel supply system that can detect a decrease in fuel supply performance at an early stage, thereby significantly improving reliability.

〔問題点を解決するための手段〕[Means for solving problems]

この発明に係る燃料供給装置は、第1図に示すように、
ニンジンの回転数、吸気温度およびエンジンに供給され
る燃料流量をそれぞれ検出する検出手段(101)〜(
103)と、これらの検出手段によって得られたエンジ
ンの回転数および吸気温度に対応して、エンジンが正常
に出力するに必要な上限燃料流量および下限燃料流量を
算出する演算手段(10りと、この演算手段の出力と実
際の燃料流量を検出した検出手段の出力とを比較する比
較手段(105)と、この比較手段の比較結果に基づき
、実際の燃料流量が上限燃料流量および下限燃料流量の
間にないとき燃料供給状態が異常であることを表示する
表示手段(106)とを備えたものである0〔作用〕 この発明においては、エンジンの回転速度に対応してこ
のエンジンが正規に出力するに必要な上限燃料流量およ
び下限燃料流量を演算手段(to43cよって演算し、
その演算結果と実際の燃料流量を検出した検出値とを比
較手段(105)によって比較し、燃料流量の検出値が
上限燃料流量と下限燃料流量の間にあれば燃料供給系統
が正常であると判定し、燃料流量の検出値がこの間参に
ないとき燃料供給系統が異常であると判定するもので、
特に。
As shown in FIG. 1, the fuel supply device according to the present invention has the following features:
Detection means (101) to (101) for detecting the carrot rotation speed, intake air temperature, and fuel flow rate supplied to the engine, respectively.
103), and calculation means (10 and 10) for calculating the upper limit fuel flow rate and lower limit fuel flow rate necessary for the engine to output normally, in accordance with the engine rotation speed and intake air temperature obtained by these detection means. Comparison means (105) compares the output of this calculation means with the output of the detection means that detects the actual fuel flow rate, and based on the comparison result of this comparison means, the actual fuel flow rate is determined to be between the upper limit fuel flow rate and the lower limit fuel flow rate. 0 [Function] In the present invention, the engine outputs a normal output in accordance with the rotational speed of the engine. The upper limit fuel flow rate and lower limit fuel flow rate necessary for
The comparison means (105) compares the calculation result with the detected value of the actual fuel flow rate, and if the detected value of the fuel flow rate is between the upper limit fuel flow rate and the lower limit fuel flow rate, it is determined that the fuel supply system is normal. This system determines that the fuel supply system is abnormal when the detected value of the fuel flow rate is not within this interval.
especially.

この異常を表示手段(106)によって表示することに
より燃料供給性能の低下を初期段階で検出する0〔実施
例〕 第2図はこの発明の一実施例の構成説明図で(1)〜四
は従来装置と全く同一のものである0そしてこれら以外
の(至)は主要部がマイクロコンピュータでなる自動点
検装置、(至)はガスタービン四の吸気温度を検出して
検出信号を自動点検装置(ロ)に加える燃焼吸気温度検
出装置、(ロ)はサービスタンク(1)の出側で燃料流
量を検出して検出信号を自動点検装置(ロ)に加える燃
料流量検出装置をそれぞれ示す0なお、自動点検装置(
至)Kは速度調節器σ4の回転数検出信号も取込まれて
いる0 第3図は自動点検装置(ロ)の詳細な構成を示すブロッ
ク図であシ、燃焼吸気温度検出装置(至)、燃料流量検
出装置(ロ)、速度調節器(4)内の回転数検出装置m
+ 、 mの出力信号を入力して論理判断や演算処理が
可能な信号に変換する入力装置−と、これらの論理判断
や演算を実行するためのプログラム、入力データおよび
演算結果データを記憶する記憶装置例と、この記憶装置
に内蔵されたプログラムの内容に従って入力装置−から
のデータを取込むと共に論理判断および演算を実行して
その結果を記憶装置例や外部に出力する演算制御装置8
s)と、演算制御装置185)によって判断された結果
を外部の表示装置−や補助リレー−を動作させ得る信号
に変換する出力装置−とを備えている0 以下、第4図に示したガスタービンの回転数Nと燃料流
量との関係を示す線図をも参照して第5図の7a−チャ
ー)K従って本実施例の動作を説明する0 先ず、ステップ間で回転数検出装置(接点)−でガスタ
ービン叫が着火速度に到達したか否かを判定し、着火速
度に到達してから自動点検を行なうべくステップ間で燃
焼吸気温度Tを読み取る0次に、ステップ−では、ガス
タービンが定格速度に近づくことに合わせて1秒間だけ
待ち、ステップ■で回転数検出装置(アナログ) 18
1)によって検出された回転数Ni、燃料流量検出装置
(ロ)で検出された燃料流量Wfiを読取って記憶する
0また、ステップ−でガスタービンが定格速度に到達し
たか否かを判定し、定格速度に到達した時点で、次のス
テップ−に進み、第4図に示す回転数Nと燃料流量Wf
との関係を示す線図に対応する関係式を用いることによ
って、ガスタービンの実回転数Ni毎に正常状態での上
限燃料流量HWfi 。
By displaying this abnormality by the display means (106), a decrease in fuel supply performance is detected at an early stage.0 [Embodiment] Fig. 2 is a diagram illustrating the configuration of an embodiment of the present invention, and (1) to 4 are 0, which is completely the same as the conventional device, and the other (to) is an automatic inspection device whose main part is a microcomputer, and (to) is an automatic inspection device that detects the intake air temperature of the gas turbine 4 and sends the detection signal ( (b) shows a combustion intake air temperature detection device to be added, and (b) shows a fuel flow rate detection device that detects the fuel flow rate at the outlet side of the service tank (1) and sends a detection signal to the automatic inspection device (b). Automatic inspection device (
To) K also captures the rotational speed detection signal of the speed regulator σ4.0 Figure 3 is a block diagram showing the detailed configuration of the automatic inspection device (B), and the combustion intake air temperature detection device (To) , fuel flow rate detection device (b), rotation speed detection device m in the speed regulator (4)
+, an input device that inputs the output signals of m and converts them into signals that can be subjected to logical judgments and calculations, and a memory that stores programs, input data, and calculation result data for executing these logical judgments and calculations. An arithmetic control device 8 that takes in data from an input device according to the contents of the device example and the program built into this storage device, executes logical judgments and operations, and outputs the results to the storage device example or outside.
s) and an output device that converts the results determined by the arithmetic and control device 185) into signals that can operate an external display device or auxiliary relay. Therefore, the operation of this embodiment will be explained with reference to a diagram showing the relationship between the rotational speed N of the turbine and the fuel flow rate. ) - determines whether the gas turbine noise has reached the ignition speed, and after reaching the ignition speed, reads the combustion intake air temperature T between steps. Next, in step -, the gas turbine Wait for one second as the speed approaches the rated speed, and then turn on the rotation speed detection device (analog) in step ■.
1) Read and store the rotational speed Ni detected by the fuel flow rate detection device (b) and the fuel flow rate Wfi detected by the fuel flow rate detection device (b). When the rated speed is reached, proceed to the next step and set the rotation speed N and fuel flow rate Wf shown in Fig. 4.
By using the relational expression corresponding to the diagram showing the relationship between the two, the upper limit fuel flow rate HWfi in the normal state can be determined for each actual rotational speed Ni of the gas turbine.

下限燃料流量LWfiを計算する。なお、上限燃料流量
HWfi 、  下限燃料流量LWf iは吸気温度が
高くなると正常状態でも燃料流量が増えるので換算式に
よって補正する。
Calculate the lower limit fuel flow rate LWfi. Note that the upper limit fuel flow rate HWfi and the lower limit fuel flow rate LWfi are corrected using a conversion formula because as the intake air temperature increases, the fuel flow rate increases even in a normal state.

次に1ステップ間では燃料流量検出装置(ロ)で検出さ
れた燃料流量Wfiと、上限燃料流量IWfi、下限燃
料流量 LWf iとを比較し、これらの間にHwfl
) wrt ) Lwrtの関係にあればステップ馳で
燃料供給状態が「正常」であることの信号を出力し、H
Wfi (Wfi  またはWfi (LWfiの関係
にあればステップ−で燃料供給状態が「異常」であるこ
との信号を出力する。
Next, during one step, the fuel flow rate Wfi detected by the fuel flow rate detection device (b) is compared with the upper limit fuel flow rate IWfi and the lower limit fuel flow rate LWf i, and between these, Hwfl
) wrt ) If the relationship is Lwrt, a signal indicating that the fuel supply status is "normal" is output with a step, and H
If the relationship is Wfi (Wfi or Wfi (LWfi), a signal indicating that the fuel supply state is "abnormal" is output in step -.

かくして、これらの点検結果が表示装置−によって表示
される他、補助リレー−を用いて他に警報を与える。
Thus, the results of these inspections are not only displayed on the display device, but also provide an alarm to others using the auxiliary relay.

なお、上記実施例では点検結果を表示装置−に表示させ
る構成を採ったが、例えば、エンジンの回転数と燃料流
量とを併せてタイプアウトするようにすれば、異常時の
状況をさらに詳しく把掘することができる。
In the above embodiment, the inspection results are displayed on the display device, but if the engine speed and fuel flow rate are typed out together, it is possible to understand the situation in more detail when an abnormality occurs. can be dug.

また、上記実施例では1回だけ異常判定されたとき直ち
にその旨を表示したが、2回続けて異常判定された場合
に始めて「異常」表示するようにすれば、外乱等によっ
て誤判定する割合が少なくなる。
In addition, in the above embodiment, when an abnormality is determined only once, it is immediately displayed, but if "abnormal" is displayed for the first time when an abnormality is determined twice in a row, the rate of erroneous determination due to disturbance etc. becomes less.

なおまた、上記実施例では、非常用ガスタービン発電装
置の燃料供給装置について説明したが、本発明はこれに
限定されるものではなく、常用のエンジン、ガスタービ
ン以外のエンジン、あるいは発電装置以外のエンジンの
燃料供給装置にも適用可能である。
Furthermore, in the above embodiments, a fuel supply system for an emergency gas turbine power generation system has been described, but the present invention is not limited to this, and may be applied to a regular engine, an engine other than a gas turbine, or a fuel supply system other than a power generation system. It is also applicable to engine fuel supply devices.

〔発明の効果〕〔Effect of the invention〕

以上の説明によって明らかなように、この発明によれば
エンジン起動中の回転数、燃料流量および燃焼吸気温度
を検出し、このうち回転数および燃焼吸気温度に基いて
正常状態の上限燃料流量および下限燃料流量を算出し、
さらに1検出された実際の燃料流量がこの上限燃料流量
および下限燃料流量の間にないとき表示装置に「異常」
を表示させるので、燃料供給性能の低下を初期段階で確
実に検出することができ、起動失敗の虞れもなくなるこ
とから装置の信頼性を格段に向上させることができる。
As is clear from the above description, according to the present invention, the rotation speed, fuel flow rate, and combustion intake temperature are detected during engine startup, and based on the rotation speed and combustion intake temperature, the upper limit and lower limit of the fuel flow rate in the normal state are detected. Calculate the fuel flow rate,
Furthermore, if the detected actual fuel flow rate is not between the upper limit fuel flow rate and the lower limit fuel flow rate, the display will indicate an "abnormality".
, it is possible to reliably detect a decline in fuel supply performance at an early stage, and since there is no risk of startup failure, it is possible to significantly improve the reliability of the device.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図はこの発明の構成を示すブロック図、第2図はこ
の発明の一実施例の構成説明図、第3図は同実施例の主
要な要素の詳細な構成を示すブロック図、第4図は同実
施例の動作を説明するための線図、第5図は同実施例の
動作を説明するためのフローチャート、第6図は従来の
燃料供給装置の構成を示す燃料供給系統図である。 <1) : ?−ビスタンク (4):高圧ポンプ(6
):燃料制御弁   叫ニガスタービンa@:速度調節
器   (至):自動点検装置α句=燃焼吸気温度検出
装置 α′Q:燃料流量検出装置 11311 、瞥:回転数検出装置 + ′  −、N 1 C+=’   I;i戸 18al=・入力装置    例:記憶装置m+ :演
算制御装置  −:出力装置−2嵌示装置    (1
01) :回転数検出手段(j02) :温度検出手段 (103) :流量検出手段 (104) :演算手段  (105) :比較手段(
106) :表示手段 なお、各図中同一符号は同一または相当部分を示す。
FIG. 1 is a block diagram showing the configuration of the present invention, FIG. 2 is an explanatory diagram of the configuration of an embodiment of the invention, FIG. 3 is a block diagram showing the detailed configuration of the main elements of the embodiment, and FIG. The figure is a line diagram for explaining the operation of the same embodiment, FIG. 5 is a flowchart for explaining the operation of the same embodiment, and FIG. 6 is a fuel supply system diagram showing the configuration of a conventional fuel supply device. . <1): ? -Vist tank (4): High pressure pump (6
): Fuel control valve Gas turbine a@: Speed regulator (To): Automatic inspection device α phrase = Combustion intake air temperature detection device α′Q: Fuel flow rate detection device 11311, View: Rotation speed detection device + ′ -, N 1 C+='I;i door 18al=・Input device Example: Storage device m+: Arithmetic control device -: Output device-2 Insertion device (1
01): Rotation speed detection means (j02): Temperature detection means (103): Flow rate detection means (104): Calculation means (105): Comparison means (
106): Display means Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

【特許請求の範囲】[Claims] 回転機械を駆動するエンジンに燃料を供給する燃料供給
装置において、前記エンジンの回転数を検出する回転数
検出手段と、前記エンジンの吸気温度を検出する温度検
出手段と、前記エンジンに供給される燃料流量を検出す
る流量検出手段と、前記回転数検出手段および温度検出
手段の出力信号に基いて、前記エンジンが正常に出力す
るに必要な上限燃料流量および下限燃料流量を算出する
演算手段と、この演算手段の出力と前記流量検出手段の
出力とを比較する比較手段と、この比較手段の比較結果
により、前記流量検出手段によつて検出された実際の燃
料流量が前記演算手段によつて算出された上限燃料流量
および下限燃料流量の間にないとき燃料供給状態が異常
であることを表示する表示手段とを具備したことを特徴
とする燃料供給装置。
A fuel supply device for supplying fuel to an engine that drives a rotating machine, comprising: a rotation speed detection means for detecting the rotation speed of the engine; a temperature detection means for detecting the intake air temperature of the engine; and a fuel supplied to the engine. a flow rate detection means for detecting the flow rate, a calculation means for calculating an upper limit fuel flow rate and a lower limit fuel flow rate necessary for the engine to output normally, based on the output signals of the rotation speed detection means and the temperature detection means; a comparison means for comparing the output of the calculation means and the output of the flow rate detection means, and based on the comparison result of the comparison means, the actual fuel flow rate detected by the flow rate detection means is calculated by the calculation means. 1. A fuel supply device comprising display means for displaying that a fuel supply state is abnormal when the fuel flow rate is not between an upper limit fuel flow rate and a lower limit fuel flow rate.
JP4702885A 1985-03-08 1985-03-08 Fuel supply device Pending JPS61205339A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4702885A JPS61205339A (en) 1985-03-08 1985-03-08 Fuel supply device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4702885A JPS61205339A (en) 1985-03-08 1985-03-08 Fuel supply device

Publications (1)

Publication Number Publication Date
JPS61205339A true JPS61205339A (en) 1986-09-11

Family

ID=12763723

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4702885A Pending JPS61205339A (en) 1985-03-08 1985-03-08 Fuel supply device

Country Status (1)

Country Link
JP (1) JPS61205339A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006258362A (en) * 2005-03-17 2006-09-28 Sanyo Electric Co Ltd Ceiling embedded type air conditioner
JP2007071144A (en) * 2005-09-08 2007-03-22 Mitsubishi Heavy Ind Ltd Fuel flow controller, electric power generation system and fuel flow control method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006258362A (en) * 2005-03-17 2006-09-28 Sanyo Electric Co Ltd Ceiling embedded type air conditioner
JP2007071144A (en) * 2005-09-08 2007-03-22 Mitsubishi Heavy Ind Ltd Fuel flow controller, electric power generation system and fuel flow control method

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