JPH1045200A - Oil feeding equipment provided with automatic filling and stop function - Google Patents
Oil feeding equipment provided with automatic filling and stop functionInfo
- Publication number
- JPH1045200A JPH1045200A JP21920996A JP21920996A JPH1045200A JP H1045200 A JPH1045200 A JP H1045200A JP 21920996 A JP21920996 A JP 21920996A JP 21920996 A JP21920996 A JP 21920996A JP H1045200 A JPH1045200 A JP H1045200A
- Authority
- JP
- Japan
- Prior art keywords
- flow rate
- control valve
- full
- tank
- valve
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、満タンが近づくに
従い流量が小さくなるように設定して、油面を検知した
ときに給油を停止するようにした自動満タン停止機能を
備えた給油装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a refueling apparatus having an automatic full tank stop function in which the flow is set to decrease as the tank becomes full and the refueling is stopped when an oil level is detected. It is about.
【０００２】[0002]
【従来の技術】この種の給油装置は、一般に、給油ノズ
ルに油面または泡を検知して検知信号を出力する油面検
知手段を備えている（たとえば、特公平６−９８９９９
号公報、特開平７−１３７７９９号公報参照）。この種
の給油ノズルの一例を図５に示す。2. Description of the Related Art This type of lubricating apparatus is generally provided with an oil level detecting means for detecting an oil level or bubbles at an oiling nozzle and outputting a detection signal (for example, Japanese Patent Publication No. 6-98999).
JP-A-7-137799). FIG. 5 shows an example of this type of refueling nozzle.
【０００３】図５において、給油ノズル１５内の第１流
路１６には、主弁１７および副弁１８が設けられ、これ
らの弁１７，１８はスプリング１９により閉方向に付勢
されている。操作レバー２１が支軸２２を中心に矢印方
向に回動すると、前記スプリング１９のバネ力に抗して
弁軸２０が右側へ摺動して、前記主弁１７および副弁１
８が順に開弁し、第１流路１６と第２流路２３とが連通
する。前記弁軸２０には摺動自在に逆止弁２５が装着さ
れている。該逆止弁２５は第２スプリング２６により第
２流路２３を閉塞する方向に付勢されており、燃料油の
圧力で開弁すると共に、該開弁時に狭搾部３８を形成す
る。狭搾部３８に燃料油が流れると、ベンチュリー効果
によって空気補給路２７には負圧が発生する。[0003] In FIG. 5, a main valve 17 and a sub-valve 18 are provided in a first flow path 16 in a refueling nozzle 15, and these valves 17 and 18 are urged in a closing direction by a spring 19. When the operating lever 21 rotates about the support shaft 22 in the direction of the arrow, the valve shaft 20 slides to the right against the spring force of the spring 19, and the main valve 17 and the sub-valve 1
8 are opened in order, and the first flow path 16 and the second flow path 23 communicate with each other. A check valve 25 is slidably mounted on the valve shaft 20. The check valve 25 is urged by the second spring 26 in a direction to close the second flow path 23, and is opened by the pressure of the fuel oil, and forms a squeezed portion 38 when the valve is opened. When the fuel oil flows through the squeezing section 38, a negative pressure is generated in the air supply path 27 by the Venturi effect.
【０００４】前記空気補給路２７は、ダイヤフラム室２
８の負圧室３１に連通している。ダイヤフラム室２８
は、第３スプリング３２によって上方に押圧されたダイ
ヤフラム２９と、該ダイヤフラム２９により負圧室３１
に対して区画された大気圧室３０とを備えている。ダイ
ヤフラム２９には遮光片３３が固定され、該遮光片３３
を光電検出器（油面検知手段）３４が検出する。The air supply path 27 is provided in the diaphragm chamber 2
8 communicates with the negative pressure chamber 31. Diaphragm chamber 28
Is a diaphragm 29 pressed upward by a third spring 32 and a negative pressure chamber 31
And an atmospheric pressure chamber 30 partitioned from the atmospheric pressure chamber 30. A light shielding piece 33 is fixed to the diaphragm 29.
Is detected by the photoelectric detector (oil level detecting means) 34.
【０００５】前記第２流路２３には、第３流路２４を介
して給油ノズル１５のスパウト３５内の流路が連通して
いる。スパウト３５内には、空気補給管３６が挿入され
ている。該空気補給管３６は一方の開口部３７がスパウ
ト３５の先端付近で大気に開口し、他方が負圧室３１に
連通している。したがって、狭搾部３８において負圧が
発生すると、空気が開口部３７、空気補給管３６、負圧
室３１および空気補給路２７を介して狭搾部３８に補給
される。[0005] The second flow path 23 communicates with a flow path in a spout 35 of the refueling nozzle 15 via a third flow path 24. An air supply pipe 36 is inserted into the spout 35. One opening 37 of the air supply pipe 36 opens to the atmosphere near the tip of the spout 35, and the other communicates with the negative pressure chamber 31. Therefore, when a negative pressure is generated in the squeezed portion 38, air is supplied to the squeezed portion 38 via the opening 37, the air supply pipe 36, the negative pressure chamber 31 and the air supply path 27.
【０００６】一方、給油を行うことにより給油タンク内
の油面が上昇すると、燃料油が泡立った泡や油面によっ
て開口部３７が閉塞される。このように、開口部３７が
閉塞されると、前記負圧室３１には空気が補給されない
ので、ダイヤフラム２９および遮光片３３が下方に移動
し、これを光電検出器３４が検知する。[0006] On the other hand, when the oil level in the oil tank rises due to refueling, the opening 37 is closed by the foam or the oil level of the fuel oil. When the opening 37 is closed as described above, since the air is not supplied to the negative pressure chamber 31, the diaphragm 29 and the light shielding piece 33 move downward, and the photoelectric detector 34 detects this.
【０００７】このように、泡や油面が検知されると、検
知信号が出力され、給油ノズル１５に連通する送油経路
の流量調節弁が絞られ、図２に示すように、給油量を徐
々に減少させる。前記検知後、泡立ち納まり時間Ｔ０が
経過すると、流量を減らして再度給油を行うのである
が、給油を再開した後、満タン判定時間Ｔ１よりも前
に、次の検知信号が出力されると、図５の開口部３７が
泡で閉塞されたのではなく、油面で閉塞されたものであ
るとみなして、給油を完全に停止する。これにより、満
タン給油を行うことができる。[0007] As described above, when a bubble or oil level is detected, a detection signal is output, the flow control valve in the oil supply path communicating with the oil supply nozzle 15 is throttled, and as shown in FIG. Decrease gradually. After the detection, when the foaming settling time T0 has elapsed, the flow rate is reduced and refueling is performed again.However, after refueling is restarted and before the full tank determination time T1, the next detection signal is output. The refueling is completely stopped, assuming that the opening 37 in FIG. 5 is not closed by the foam but by the oil level. Thereby, a full tank refueling can be performed.
【０００８】[0008]
【発明が解決しようとする課題】ところで、この種の給
油装置では、満タン近くになると、給油精度向上のた
め、元来、流速が極限まで遅くなるようにしている。一
方、油中ポンプのように、１台のポンプで多数の給油ノ
ズルに給油を行えるようにすると、多数の給油ノズルを
同時に使用した場合には、更に流量が小さくなる。この
ように、流量が小さくなると、図５の開口部３７が油面
で閉塞されても、狭搾部３８には負圧が発生しないの
で、遮光片３３が移動しないから、光電検出器３４は油
面検知をできなくなる。そのため、オーバーフローの生
じるおそれがある。By the way, in this type of refueling apparatus, when the tank is almost full, the flow velocity is originally reduced to the limit in order to improve the refueling accuracy. On the other hand, if a single pump can supply oil to a large number of oil supply nozzles, such as a submersible pump, the flow rate will be further reduced when a large number of oil supply nozzles are used simultaneously. As described above, when the flow rate is reduced, even if the opening 37 in FIG. 5 is closed with the oil level, no negative pressure is generated in the narrowing portion 38, and the light shielding piece 33 does not move. Oil level detection becomes impossible. Therefore, an overflow may occur.
【０００９】したがって、本発明の目的は、１台のポン
プから多数の給油ノズルに燃料を供給しても、オーバー
フローの生じるおそれのない自動満タン停止機能を備え
た給油装置を提供することである。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a refueling apparatus having an automatic full tank stop function that does not cause overflow even if fuel is supplied from a single pump to a number of refueling nozzles. .
【００１０】[0010]
【課題を解決するための手段】前記目的を達成するため
に、本発明は、流量調節弁が開いているにもかかわら
ず、給油ノズルから吐出される燃料油の流量が設定最小
流量よりも小さい場合には、前記流量調節弁の開度を大
きくするようにしたものである。In order to achieve the above object, the present invention provides a fuel cell system in which the flow rate of fuel oil discharged from a refueling nozzle is smaller than a set minimum flow rate even when a flow control valve is open. In such a case, the opening of the flow control valve is increased.
【００１１】本発明によれば、燃料油の流量が設定最小
流量よりも小さくなると、流量調節弁の開度が大きくな
るので、満タンが近づいた際にも、流量をある程度大き
く保てるから、１台のポンプから同時に多数の給油ノズ
ルに燃料を圧送しても、油面を検知することができる。According to the present invention, when the flow rate of the fuel oil becomes smaller than the set minimum flow rate, the opening degree of the flow control valve becomes large. Even if the fuel is simultaneously pumped from a number of pumps to a number of fueling nozzles, the oil level can be detected.
【００１２】[0012]
【発明の実施の形態】以下、本発明の実施形態を図面に
したがって説明する。図１は第１実施形態を示す。図１
において、ポンプＰは、たとえば地下タンクに浸漬され
た油中ポンプであり、１台のポンプＰから複数の送油経
路１に分岐して複数の計量ユニット２に燃料油Ｌを圧送
する。各送油経路１には流量調節弁Ｖが設けられてい
る。流量調節弁Ｖは、たとえば１つのダイヤフラム式の
大弁ｖ１と、２つの直動式の小弁（電磁弁）ｖ２，ｖ３
とを１つの弁箱内に備えたもので構成される。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a first embodiment. FIG.
, The pump P is, for example, a submersible pump immersed in an underground tank, and branches from one pump P to a plurality of oil feed paths 1 to pump the fuel oil L to a plurality of metering units 2. Each oil supply path 1 is provided with a flow control valve V. The flow control valve V includes, for example, one large diaphragm valve v1 and two small direct-acting valves (electromagnetic valves) v2 and v3.
Are provided in one valve box.
【００１３】各送油経路１には流量計Ｆ／Ｍが介挿され
ており、給油ノズル１５から吐出される燃料油Ｌの給油
量は流量計Ｆ／Ｍに接続したパルス発信器３からのパル
ス信号ｐに基づいて検出され、パルス信号ｐのパルスが
計数回路４で計数されて表示器５で表示される。なお、
前記流量計Ｆ／Ｍおよびパルス発信器３は、燃料油Ｌの
流量を検知する流量検知手段を構成している。前記パル
ス発信器３からのパルス信号ｐは流量判定回路６にも入
力される。A flow meter F / M is interposed in each oil feed path 1, and the amount of fuel oil L discharged from the fuel supply nozzle 15 is supplied from a pulse transmitter 3 connected to the flow meter F / M. Detected based on the pulse signal p, the pulses of the pulse signal p are counted by the counting circuit 4 and displayed on the display 5. In addition,
The flow meter F / M and the pulse transmitter 3 constitute flow rate detecting means for detecting the flow rate of the fuel oil L. The pulse signal p from the pulse transmitter 3 is also input to the flow rate determination circuit 6.
【００１４】流量判定回路６は、パルス発信器３からの
パルス信号ｐを受けて、流量Ｑを設定最小流量ＱMIN と
比較し、現在の流量Ｑが設定最小流量ＱMIN よりも小さ
いときに過小信号ｓを弁制御回路７および警報器８に出
力する。前記設定最小流量ＱMIN は、図５の狭搾部３８
に負圧が発生して光電検出器３４が作動する値に設定さ
れている。なお、図１の警報器８は、過小信号ｓを受け
たときに点滅ないしブザーを鳴らして警報を発するもの
である。The flow rate judging circuit 6 receives the pulse signal p from the pulse transmitter 3, compares the flow rate Q with the set minimum flow rate Q MIN, and determines that the current flow rate Q is smaller than the set minimum flow rate Q MIN. The signal s is output to the valve control circuit 7 and the alarm 8. The set minimum flow rate Q MIN is determined by the squeezed portion 38 in FIG.
Is set to a value at which a negative pressure occurs and the photoelectric detector 34 operates. The alarm device 8 shown in FIG. 1 emits an alarm by blinking or sounding a buzzer when the under signal s is received.
【００１５】弁制御回路７は、開閉信号ａを出力するこ
とにより流量調節弁Ｖの３つの弁ｖ１〜ｖ３を開閉制御
するもので、満タンが近づくと満タン制御回路９からの
開度信号ｂに基づいて流量調節弁Ｖを制御する。The valve control circuit 7 controls the opening and closing of the three valves v1 to v3 of the flow control valve V by outputting an opening / closing signal a. The flow control valve V is controlled based on b.
【００１６】満タン制御回路９は、給油ノズル１５の光
電検出器３４からの検知信号ｃを受けて、以下に説明す
るように、弁制御回路７に流量調節弁Ｖの開度を絞らせ
る。図２の給油開始時ｔ０〜ｔ１では、開度が最大に設
定されており、３つの弁ｖ１〜ｖ３が開く。その後、油
面を検知する度に、開度が小さくなるように設定されて
おり、ｔ２〜ｔ３では、２つの小弁ｖ２，ｖ３のみが開
く中流となり、更に、ｔ４〜ｔ５では１つの小弁ｖ３の
みが開く小流となる。すなわち、図１の弁制御回路７
は、満タンが近づくに従い、満タン制御回路９からの指
令を受けて流量調節弁Ｖの開度を絞る。The full tank control circuit 9 receives the detection signal c from the photoelectric detector 34 of the refueling nozzle 15 and causes the valve control circuit 7 to narrow the opening of the flow control valve V as described below. At the refueling start time t0 to t1 in FIG. 2, the opening is set to the maximum, and the three valves v1 to v3 are opened. Thereafter, each time the oil level is detected, the opening degree is set to be small. At t2 to t3, only the two small valves v2 and v3 are in the middle flow to open, and at t4 to t5, one small valve is set. Only v3 becomes a small stream that opens. That is, the valve control circuit 7 of FIG.
Reduces the opening of the flow control valve V in response to a command from the full tank control circuit 9 as the full tank approaches.
【００１７】一方、弁制御回路７は流量調節弁Ｖが開弁
しているにもかかわらず、流量判定回路６から過小信号
ｓを受けたときには、流量調節弁Ｖの流量制限を緩和す
る。すなわち、弁制御回路７は、小流または中流におい
て過小信号ｓを受けると、閉じていた弁ｖ２，ｖ３を開
弁して、それぞれ、中流または大流に流量調節弁Ｖを設
定する。On the other hand, when the valve control circuit 7 receives the under signal s from the flow determination circuit 6 even though the flow control valve V is open, the flow control of the flow control valve V is relaxed. That is, when receiving the undercurrent signal s in the small flow or the middle flow, the valve control circuit 7 opens the closed valves v2 and v3, and sets the flow control valve V to the middle flow or the large flow, respectively.
【００１８】なお、計数回路４は、計数値が整数になる
と（小数点以下２桁が００になると）丁度信号ｏを満タ
ン制御回路９に出力する。満タン制御回路９は小流時に
計数回路４からの丁度信号ｏを受けると弁制御回路７に
給油を停止させる。Note that the counting circuit 4 outputs a signal o to the full tank control circuit 9 when the counted value becomes an integer (when two digits after the decimal point become 00). When the full tank control circuit 9 receives just the signal o from the counting circuit 4 at the time of a small flow, the valve control circuit 7 stops refueling.
【００１９】つぎに、前記構成の主たる動作について説
明する。まず、給油ノズル１５を図示しないハンガーか
ら取り外し、給油タンクにセットすると、弁制御回路７
が流量調節弁Ｖを全開にし、図２の時間ｔ０〜ｔ１のよ
うに大流で給油がなされる。その後、時間ｔ１で、図１
の光電検出器３４が泡を検出すると、検知信号ｃが出力
され、満タン制御回路９が開度信号ｂを出力して弁制御
回路７に中流で給油を行うように指令を出す。これによ
り弁制御回路７が一度流量調節弁Ｖを全閉にし、泡立ち
納まり時間Ｔ０が経過した後２つの小弁ｖ１，ｖ２を開
かせ、図２の時間ｔ２〜ｔ３のように、中流で給油がな
される。時間ｔ3 において、図１の光電検出器３４が泡
を検出すると検知信号ｃが満タン制御回路９に出力され
る。満タン制御回路９は検知信号ｃの回数をカウントし
ており、２回目の検知信号ｃを受けたことで、開度信号
ｂを出力して弁制御回路７に小流で給油を行うように指
令を出す。その後、こうした動作を繰り返す。図２の小
流で給油がなされている時間ｔ４〜ｔ５，時間ｔ６〜ｔ
７において、小流での給油後、満タン判定時間Ｔ１以内
に、再び図１の光電検出器３４から検知信号ｃが出力さ
れた場合は、油面がノズルの先端に達したのであろうか
ら、満タンになったとみなして給油を停止する。Next, the main operation of the above configuration will be described. First, when the refueling nozzle 15 is removed from a hanger (not shown) and set in the refueling tank, the valve control circuit 7
Fully opens the flow control valve V, and refueling is performed in a large flow as shown at times t0 to t1 in FIG. Then, at time t1, FIG.
When the photoelectric detector 34 detects bubbles, a detection signal c is output, and the full tank control circuit 9 outputs an opening degree signal b to instruct the valve control circuit 7 to refuel in the middle flow. As a result, the valve control circuit 7 once closes the flow control valve V completely and opens the two small valves v1 and v2 after the elapse of the bubble-filling time T0, and refuels in the middle flow as shown at time t2 to t3 in FIG. Is made. At time t3, when the photoelectric detector 34 of FIG. 1 detects a bubble, a detection signal c is output to the full control circuit 9. The full tank control circuit 9 counts the number of times of the detection signal c, and upon receiving the second detection signal c, outputs the opening degree signal b to supply the valve control circuit 7 with a small flow of oil. Issue a command. Thereafter, such an operation is repeated. Time t4 to t5 and time t6 to t during which refueling is performed in the small stream in FIG.
In 7, if the detection signal c is output again from the photoelectric detector 34 in FIG. 1 within the full tank determination time T1 after refueling with a small flow, the oil level may have reached the tip of the nozzle. Assuming that the tank is full, refueling is stopped.
【００２０】ここで、１台のポンプＰから多数の送油経
路１に給油を行っていると、流量Ｑが小さくなる。該流
量Ｑが設定最小流量ＱMIN よりも小さいと、流量判定回
路６から弁制御回路７に過小信号ｓが出力される。この
過小信号ｓを受けて、弁制御回路７は、たとえば、図２
の時間ｔ４〜ｔ５，時間ｔ６〜ｔ７では図１の２つの小
弁ｖ１，ｖ２を開弁する。それでも、流量Ｑが設定最小
流量ＱMIN よりも小さい場合には、全ての弁ｖ１〜ｖ３
を開く。したがって、流量Ｑが設定最小流量ＱMIN より
も小さくなるのを防止し得るから、油面を検知できるの
で、オーバーフローを防止し得る。Here, when the oil is supplied from one pump P to many oil supply paths 1, the flow rate Q becomes small. When the flow rate Q is smaller than the set minimum flow rate Q MIN , the flow rate judgment circuit 6 outputs an under signal s to the valve control circuit 7. In response to the under signal s, the valve control circuit 7, for example,
During times t4 to t5 and times t6 to t7, the two small valves v1 and v2 in FIG. 1 are opened. Nevertheless, when the flow rate Q is smaller than the set minimum flow rate Q MIN, all valves v1~v3
open. Therefore, the flow rate Q can be prevented from becoming smaller than the set minimum flow rate Q MIN , and the oil level can be detected, so that overflow can be prevented.
【００２１】ところで、全ての弁ｖ１〜ｖ３が開いてい
るにもかかわらず、流量Ｑが設定最小流量ＱMIN よりも
小さい場合が想定される。こうした場合に備えて、前記
弁制御回路７は、以下の図３のフローチャートに示す機
能を備えているのが好ましい。[0021] By the way, in spite of all of the valve v1~v3 it is open, when the flow rate Q is smaller than the set minimum flow rate Q MIN is assumed. In preparation for such a case, it is preferable that the valve control circuit 7 has a function shown in a flowchart of FIG. 3 below.
【００２２】弁制御回路７は、給油中に、図３のステッ
プＳ１で過小信号ｓが入力されると、ステップＳ２に進
み、流量調節弁Ｖが全開か否かを判断し、全開でなけれ
ばステップＳ３に進んで開度を大きくし、一方、全開で
あればステップＳ４に進んで流量調節弁Ｖを全閉にして
給油を停止する。If the under control signal s is inputted in step S1 of FIG. 3 during refueling, the valve control circuit 7 proceeds to step S2, determines whether or not the flow control valve V is fully opened. Proceeding to step S3, the degree of opening is increased. On the other hand, if it is fully open, the flow proceeds to step S4, where the flow control valve V is fully closed to stop refueling.
【００２３】こうすることで、流量調節弁Ｖが全開（所
定の開度の一例）であるにもかかわらず流量Ｑが設定最
小流量ＱMIN より小さい場合には、給油を停止すること
により、油面が検知ができなくても、オーバーフローを
防止できる。By doing so, if the flow rate Q is smaller than the set minimum flow rate Q MIN even though the flow control valve V is fully open (an example of a predetermined opening degree), the oil supply is stopped, Even if the surface cannot be detected, overflow can be prevented.
【００２４】ところで、図１の大弁ｖ１がダイヤフラム
弁のようにパイロット弁により開閉動作する場合には、
大弁ｖ１の動作遅れがあるので、流量が一定量となるま
でに時間を要するから、満タンであるにもかかわらず、
図２の満タン判定時間Ｔ１以内に液面を検知できない場
合が想定される。こうした場合に備えて、前記満タン制
御回路９は以下の図４のフローチャートに示す機能を備
えているのが好ましい。When the large valve v1 in FIG. 1 is opened and closed by a pilot valve like a diaphragm valve,
Since there is a delay in the operation of the large valve v1, it takes time for the flow rate to reach a constant amount.
It is assumed that the liquid level cannot be detected within the full tank determination time T1 in FIG. In case of such a case, it is preferable that the filling control circuit 9 has a function shown in a flowchart of FIG.
【００２５】給油が開始された後に、満タン制御回路９
は、ステップＳ１１で検知信号ｃを受けると、ステップ
Ｓ１２に進み全閉の開度信号ｂを出力し、ステップＳ１
３に進む。ステップＳ１３では所定の泡立ち納まり時間
Ｔ０が経過した後、ステップＳ１４で、開度を小さくさ
せて給油を再開し、やがて、ステップＳ１５で検知信号
ｃを受けステップＳ１６に進む。ステップＳ１６では、
流量調節弁Ｖが全開か否かを判断し、全開でない場合は
ステップＳ１７に進み、図１の第１満タン判定時間Ｔ１
以内に前記検知信号ｃが入力されたか否かを判断する。
間欠給油時間Ｔが第１満タン判定時間Ｔ１以内であれ
ば、満タンになったとみなして（検知したのが泡ではな
く液面であるとみなして）図４のステップＳ１８に進ん
で給油を停止し、一方、間欠給油時間Ｔが第１満タン判
定時間Ｔ１よりも大きければステップＳ１３に戻る。前
記ステップＳ１６で流量調節弁Ｖが全開である場合はス
テップＳ２０に進み、第１満タン判定時間Ｔ１よりも長
い第２満タン判定時間Ｔ２以内に前記検知信号ｃを受け
たか否かを判断する。間欠給油時間Ｔが第２満タン判定
時間Ｔ２以内であれば、満タンになったとみなして、ス
テップＳ２１に進んで給油を停止し、一方、間欠給油時
間Ｔが第２満タン判定時間Ｔ２よりも長ければステップ
Ｓ１３に戻る。After the refueling is started, the full tank control circuit 9
Receives the detection signal c in step S11, proceeds to step S12, outputs a fully-closed opening signal b, and returns to step S1.
Proceed to 3. In step S13, after the predetermined foaming settling time T0 has elapsed, in step S14, the opening degree is reduced and the refueling is restarted. After that, the detection signal c is received in step S15, and the process proceeds to step S16. In step S16,
It is determined whether or not the flow control valve V is fully opened. If the valve is not fully opened, the process proceeds to step S17, and the first full tank determination time T1 in FIG.
It is determined whether or not the detection signal c has been input within the period.
If the intermittent refueling time T is within the first full tank determination time T1, it is regarded that the tank is full (assuming that the detected liquid level is not bubbles) and the process proceeds to step S18 in FIG. If the intermittent refueling time T is longer than the first full tank determination time T1, the process returns to step S13. If the flow control valve V is fully opened in step S16, the process proceeds to step S20, and it is determined whether or not the detection signal c has been received within the second full tank determination time T2 longer than the first full tank determination time T1. . If the intermittent refueling time T is within the second full tank determination time T2, it is considered that the tank is full, and the process proceeds to step S21 to stop refueling, while the intermittent refueling time T is longer than the second full tank determination time T2. If it is longer, the process returns to step S13.
【００２６】このように、流量調節弁Ｖが全開である場
合には、第１満タン判定時間Ｔ１よりも長い第２満タン
判定時間Ｔ２を基準に、検知したものが泡か液面かを判
定すれば、パイロット式の大弁ｖ１の開弁時の動作遅れ
があっても、満タンを検知して、オーバーフローを防止
することができる。As described above, when the flow control valve V is fully opened, it is determined whether the detected object is a bubble or a liquid level based on the second full tank determination time T2 longer than the first full tank determination time T1. If it is determined, even if there is an operation delay when the pilot-type large valve v1 is opened, overflow can be detected by detecting the full tank.
【００２７】ところで、図１のポンプＰで１台の給油ノ
ズル１５のみを使用する場合には、逆に流量Ｑが大きく
なり過ぎる場合がある。かかる場合に備えて、流量判定
回路６および弁制御回路７は以下の機能を備えているの
が好ましい。流量判定回路６は、許容流量の最大値Ｑ
MAX と流量Ｑとを比較し、流量Ｑが最大値ＱMAX よりも
大きい場合には、弁制御回路７に過大信号を出力する。
弁制御回路７は、弁制御回路７を受けると流量調節弁Ｖ
の開度を小さくする。これにより、オーバーフローを防
止することができる。When only one oil supply nozzle 15 is used in the pump P of FIG. 1, the flow rate Q may be too large. In preparation for such a case, the flow rate determination circuit 6 and the valve control circuit 7 preferably have the following functions. The flow rate determination circuit 6 determines the maximum value Q of the allowable flow rate.
Comparing the MAX and the flow rate Q, when the flow rate Q is greater than the maximum value Q MAX outputs an excessive signal to the valve control circuit 7.
When the valve control circuit 7 receives the valve control circuit 7, the flow control valve V
The degree of opening. Thereby, overflow can be prevented.
【００２８】ところで、前記実施形態では、給油ノズル
１５の光電検出器３４によって油面を検出したが、本発
明は他の手段で油面を検出してもよい。たとえば、パル
ス発信器３からのパルス信号ｐを満タン制御回路９に出
力させ、パルス信号ｐがゼロになったときに満タンであ
ると判定する場合も本発明に含まれる。この場合、パル
ス信号ｐが検知信号ｃに相当する。また、本発明は給油
ノズル１５の構造を図５のものに限定するものではな
く、特開平７−１３７７９９号のような構造のものであ
ってもよい。In the above-described embodiment, the oil level is detected by the photoelectric detector 34 of the oil supply nozzle 15, but the present invention may be applied to the oil level by other means. For example, the present invention includes a case where the pulse signal p from the pulse transmitter 3 is output to the full tank control circuit 9 and it is determined that the tank is full when the pulse signal p becomes zero. In this case, the pulse signal p corresponds to the detection signal c. Further, the present invention is not limited to the structure of the refueling nozzle 15 shown in FIG. 5, but may have a structure as disclosed in Japanese Patent Application Laid-Open No. 7-137799.
【００２９】また、前記実施形態では、流量調節弁Ｖが
３つの弁ｖ１〜ｖ３を持つものであったが、本発明では
流量調節弁Ｖがモータバルブのように無段階に開度を調
節できるものでもよい。また、ポンプＰは油中式である
必要はなく、１台のポンプＰから複数台の計量ユニット
に供給するものであれば、本発明の範囲に含まれる。In the above embodiment, the flow control valve V has three valves v1 to v3. However, in the present invention, the flow control valve V can continuously adjust the opening like a motor valve. It may be something. Further, the pump P does not need to be of the oil-in-oil type, and is included in the scope of the present invention as long as one pump P supplies a plurality of measuring units.
【００３０】[0030]
【発明の効果】以上説明したように、本発明によれば、
給油ノズルから吐出される燃料油の流量が設定最小流量
よりも小さい場合には、流量調節弁の開度を大きくする
ようにしたので、流量が小さすぎて油面を検知できずに
オーバーフローを生じるという事態を防止し得る。As described above, according to the present invention,
When the flow rate of the fuel oil discharged from the refueling nozzle is smaller than the set minimum flow rate, the opening of the flow control valve is increased, so that the flow rate is too small to detect the oil level and overflow occurs. That situation can be prevented.
【００３１】さらに、請求項３の発明によれば、流量調
節弁が所定の開度よりも大きいにもかかわらず、流量が
設定最小流量よりも小さい場合には、給油を停止するか
ら、油面が検知できなくても、オーバーフローを防止し
得る。Further, according to the third aspect of the present invention, when the flow rate is smaller than the set minimum flow rate despite the fact that the flow rate control valve is larger than the predetermined opening, refueling is stopped. Even if is not detected, overflow can be prevented.
【００３２】また、請求項４の発明によれば、パイロッ
ト式の弁の動作遅れがあっても、第１満タン判定時間よ
りも長い第２満タン判定時間により満タンを判定するか
ら、動作遅れに起因するオーバーフローを防止し得る。According to the fourth aspect of the present invention, even if there is a delay in the operation of the pilot type valve, it is determined that the tank is full based on the second full tank determination time longer than the first full tank determination time. Overflow due to delay can be prevented.
【図１】本発明の一実施形態を示す自動満タン停止機能
を備えた給油装置の概略構成図である。FIG. 1 is a schematic configuration diagram of a fuel supply device having an automatic full tank stop function according to an embodiment of the present invention.
【図２】流量の制御方法を示すグラフである。FIG. 2 is a graph showing a flow rate control method.
【図３】弁制御回路の付加的な機能を示すフローチャー
トである。FIG. 3 is a flowchart showing additional functions of the valve control circuit.
【図４】満タン制御回路の付加的な機能を示すフローチ
ャートである。FIG. 4 is a flowchart showing additional functions of a full tank control circuit.
【図５】給油ノズルの一例を示す断面図である。FIG. 5 is a sectional view showing an example of a fueling nozzle.
１：送油経路 ３：パルス発信器（流量検知手段） ６：流量判定回路 ７：弁制御回路 ９：満タン制御回路 ｃ：検知信号 ｓ：過小信号 1: oil supply path 3: pulse transmitter (flow rate detection means) 6: flow rate determination circuit 7: valve control circuit 9: full tank control circuit c: detection signal s: under-signal
Claims (4)
するポンプと、前記各送油経路に設けられた流量調節弁
とを備え、給油すべきタンク内が満タンに近づくに従
い、前記流量調節弁の開度を絞らせることで満タン時に
給油を停止するようにした自動満タン停止機能を備えた
給油装置であって、 前記流量調節弁が開いているにもかかわらず、給油ノズ
ルから吐出される燃料油の流量が設定最小流量よりも小
さい場合には、前記流量調節弁の開度を大きくするよう
にした自動満タン停止機能を備えた給油装置。1. A pump for branching and feeding fuel oil to a plurality of oil feed paths, and a flow control valve provided in each of the oil feed paths, wherein a tank to be refueled approaches a full tank. A refueling apparatus having an automatic full stop function that stops refueling when the tank is full by reducing the opening of the flow control valve, and refueling despite the flow control valve is open When the flow rate of the fuel oil discharged from the nozzle is smaller than a set minimum flow rate, the fuel supply device having an automatic full tank stop function for increasing the opening of the flow control valve.
するポンプと、 前記各送油経路に設けられた流量調節弁と、 満タンが近づいたときに出力される検知信号を受けて前
記流量調節弁の開度を絞らせる満タン制御回路とを有す
る自動満タン停止機能を備えた給油装置であって、 前記送油経路を経て給油ノズルから吐出される燃料油の
流量を検知する流量検知手段と、 該流量検知手段からの流量を設定最小流量と比較し、現
在の流量が設定最小流量よりも小さいときに過小信号を
出力する流量判定回路と、 前記満タン制御回路からの指令を受けて満タンが近づく
に従い前記流量調節弁の開度を絞ると共に、前記流量判
定回路から過小信号が出力されたときに流量調節弁の流
量制限を緩和して流量を増加させる弁制御回路とを有す
る自動満タン停止機能を備えた給油装置。2. A pump for branching and feeding fuel oil to a plurality of oil supply paths, a flow control valve provided in each of the oil supply paths, and a detection signal output when the tank is almost full. And a full tank control function for reducing the opening of the flow control valve by an automatic full tank stop function, and detects a flow rate of fuel oil discharged from an oil supply nozzle through the oil supply path. A flow rate detection circuit that compares the flow rate from the flow rate detection means with a set minimum flow rate and outputs an under signal when the current flow rate is smaller than the set minimum flow rate; and A valve control circuit that reduces the opening degree of the flow control valve as the tank becomes full in response to the command, and relaxes the flow restriction of the flow control valve to increase the flow rate when the underflow signal is output from the flow rate determination circuit. With automatic filling Refueling device equipped with a stop function.
以上であるにもかかわらず前記過小信号が入力された場
合には、給油を停止させる自動満タン停止機能を備えた
給油装置。3. The valve control circuit according to claim 2, wherein the valve control circuit stops refueling when the under signal is input despite the opening degree of the flow control valve being equal to or more than a predetermined opening degree. Refueling device with automatic tank full stop function.
式の弁を有する場合において、 前記満タン制御回路は、前記流量調節弁のパイロット式
の弁が閉じている場合において所定の第１満タン判定時
間Ｔ１以内に検知信号を受けたときに満タンであると判
定して前記流量調節弁を閉止すると共に、該流量調節弁
のパイロット式の弁が開いている場合に、前記過小信号
が入力されたときには前記第１満タン判定時間Ｔ１より
も長い第２満タン判定時間Ｔ２により満タンか否かを判
定する自動満タン停止機能を備えた給油装置。4. The flow control valve according to claim 1, wherein the flow control valve includes a pilot-type valve, and the full tank control circuit includes a predetermined first full control when the pilot valve of the flow control valve is closed. When the detection signal is received within the ton determination time T1, it is determined that the tank is full and the flow control valve is closed, and when the pilot valve of the flow control valve is open, the under- A refueling device having an automatic full tank stop function for determining whether or not the tank is full based on a second full tank determination time T2 longer than the first full tank determination time T1 when input.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21920996A JP3728026B2 (en) | 1996-07-31 | 1996-07-31 | Oiling device with automatic full tank stop function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21920996A JP3728026B2 (en) | 1996-07-31 | 1996-07-31 | Oiling device with automatic full tank stop function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1045200A true JPH1045200A (en) | 1998-02-17 |
| JP3728026B2 JP3728026B2 (en) | 2005-12-21 |
Family
ID=16731924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21920996A Expired - Fee Related JP3728026B2 (en) | 1996-07-31 | 1996-07-31 | Oiling device with automatic full tank stop function |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3728026B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003054700A (en) * | 2001-08-13 | 2003-02-26 | Tokico Ltd | Oil feeder |
| JP2007320636A (en) * | 2006-06-02 | 2007-12-13 | Tokiko Techno Kk | Liquid feeder |
| JP2009126571A (en) * | 2007-11-27 | 2009-06-11 | Tokiko Techno Kk | Fuel supply apparatus |
| WO2022254940A1 (en) * | 2021-06-04 | 2022-12-08 | 株式会社タツノ | Refueling nozzle |
-
1996
- 1996-07-31 JP JP21920996A patent/JP3728026B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003054700A (en) * | 2001-08-13 | 2003-02-26 | Tokico Ltd | Oil feeder |
| JP2007320636A (en) * | 2006-06-02 | 2007-12-13 | Tokiko Techno Kk | Liquid feeder |
| JP4628312B2 (en) * | 2006-06-02 | 2011-02-09 | トキコテクノ株式会社 | Liquid supply device |
| JP2009126571A (en) * | 2007-11-27 | 2009-06-11 | Tokiko Techno Kk | Fuel supply apparatus |
| WO2022254940A1 (en) * | 2021-06-04 | 2022-12-08 | 株式会社タツノ | Refueling nozzle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3728026B2 (en) | 2005-12-21 |
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