JP3807597B2 - Fuel oil transfer device with backflow prevention mechanism - Google Patents

Fuel oil transfer device with backflow prevention mechanism Download PDF

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Publication number
JP3807597B2
JP3807597B2 JP2001116747A JP2001116747A JP3807597B2 JP 3807597 B2 JP3807597 B2 JP 3807597B2 JP 2001116747 A JP2001116747 A JP 2001116747A JP 2001116747 A JP2001116747 A JP 2001116747A JP 3807597 B2 JP3807597 B2 JP 3807597B2
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Prior art keywords
fuel oil
tank
storage tank
transfer
pipe
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JP2002308398A (en
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孝泰 千々波
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ホクシン産業株式会社
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Description

【０００１】
【発明の属する技術分野】
本発明は船舶、発電機のボイラ等（以下、「船舶等」という。）、燃料油移送装置に係り、詳細には、吸入主管を備えた燃料油貯蔵タンクと、この貯蔵タンクに移送管を介して連通された燃料油澄タンクと、前記移送管に設けられ、この移送管を通して前記貯蔵タンク中の燃料油を前記澄タンクに移送する移送ポンプと、前記澄タンクと連通した燃料油サービスタンクと、前記澄タンクおよび／または前記サービスタンクと前記貯蔵タンクとを連通する吸入管と、この吸入管に配置され、前記澄タンクおよび／または前記サービスタンク中の加熱された燃料油を前記貯蔵タンクに流下せしめる流下ポンプとを備え、前記加熱された燃料油を前記貯蔵タンクの燃料油に吸入主管を通して流下混合して前記貯蔵タンク中の燃料油を加熱するようにした燃料油移送装置に係り、特に、前記澄タンクおよび／または前記サービスタンク中の加熱された燃料油を移送管に逆流させずに、良好に前記貯蔵タンクに流下せしめる、逆流防止機構を備えた燃料油移送装置に関する。
【０００２】
【従来の技術】
船舶等において、燃料油を機関に供給する際に、通常、まず、燃料油を燃料油貯蔵タンクから移送ポンプによって移送管を通して燃料油澄タンクに送り、次いで、この燃料油澄タンクから燃料油サービスタンク（燃料油小出タンク）に送り，ここから燃料油を機関に供給している。このとき、燃料油貯蔵タンク中の燃料油は粘度を低くして移送しやすくするために、加温されることが必要である。
【０００３】
この種の加温設備を有する燃料油移送装置として、従来、図１における弁１５を備えない装置、すなわち、燃料油貯蔵タンク１と、これと移送管２を介して連通された図示しない加熱装置を備えた燃料油澄タンク３と、燃料油貯蔵タンク１中の燃料油を燃料油澄タンク３に移送するための移送ポンプ４と、燃料油澄タンク３に連通された燃料油サービスタンク５と、燃料油澄タンク３および燃料油サービスタンク５のいずれか一方、または両方を燃料油貯蔵タンク１に連通する吸入管６と、吸入管６に設けられ、燃料油澄タンク３および燃料油サービスタンク５のいずれか一方、または両方中の加熱された燃料油を燃料油貯蔵タンク１に流下せしめる流下ポンプ７とを備えた装置が知られている。図１において、８はヒータ、９は温度センサ、１０、１１、１２、１３はバルブである。
【０００４】
上述の図１装置では、燃料油澄タンク３中の燃料油は図示しない加熱装置により加熱され、次いで、図示しない燃料油清浄機で清浄されて燃料油サービスタンク５に送り込まれ、ここから図示しない主機、補機、ボイラ等に分配供給される。同時にこの加熱された燃料油の一部は流下ポンプ７の作動により燃料油貯蔵タンク１に該タンク１中の吸入主管１４を通して流下され、該タンク１中の燃料油を加温する。
【０００５】
【発明が解決すべき課題】
上述の図１装置において、加熱された燃料油の一部を燃料油澄タンク３ないしは燃料油サービスタンク５から燃料油貯蔵タンク１にもどして該タンク１中の燃料油を加温するとき、このもどす量および温度は吸入管６や移送管２の長さ、あるいは海水や、外気の温度変化に対応して変化させる必要がある。
【０００６】
すなわち、もどされる加熱された燃料油の熱量が適正値より多い場合には、海水や外気への熱量の放熱か多くなり、少ない場合には、所要量の燃料油の移送がてきなくなり、このため、もどされる加熱された燃料油の量と温度を適正に保つ必要がある。
【０００７】
しかし、上述の弁１５を備えない図１装置では、澄タンクおよび／またはサービスタンク中の加熱された燃料油の一部を燃料油貯蔵タンクに流下させる際に、燃料油は燃料油貯蔵タンクにもどらずに移送管方向に逆流してしまう。また、燃料油貯蔵タンクからの燃料油を移送管方向に送る際に空気のあわが発生してしまう。
【０００８】
そこで、本発明の目的は前記澄タンクおよび／またはサービスタンク中の加熱された燃料油を移送管に逆流させずに、良好に前記貯蔵タンクに流下せしめて、逆流を防止し、かつ、空気のあわを自動的に消去せしめ、上述の公知技術に存する欠点を改良した燃料油移送装置を提供することにある。
【０００９】
【課題を解決するための手段】
上述の目的を達成するため、本発明によれば、吸入主管を備えた燃料油貯蔵タンクと、この貯蔵タンクに移送管を介して連通された燃料油澄タンクと、前記移送管に設けられ、この移送管を通して前記貯蔵タンク中の燃料油を前記澄タンクに移送する移送ポンプと、前記澄タンクと連通した燃料油サービスタンクと、前記澄タンクおよび／または前記サービスタンクと前記貯蔵タンクとを連通する吸入管と、この吸入管に配置され、前記澄タンクおよび／または前記サービスタンク中の加熱された燃料油を前記貯蔵タンクに流下せしめる流下ポンプとを備え、前記加熱された燃料油を前記貯蔵タンクの燃料油に吸入主管を通して流下混合して前記貯蔵タンク中の燃料油を加熱するようにした燃料油移送装置において、前記移送管の移送ポンプよりも下流側にスプリングを保持したバルブを設け、前記スプリングは任意の圧力に設定し得、このようなスプリングを保持したバルブはスプリングの押圧力によって弁押えを弁座に当接し、加熱された燃料油の移送管の方向への逆流を防止してなり、これにより前記澄タンクおよび／または前記サービスタンク中の加熱された燃料油を移送管に逆流させずに、良好に前記貯蔵タンクに流下せしめるようにしたことを特徴とする。
【００１０】
【発明の実施の態様】
以下、本発明を添付図面を用いて具体的に説明する。添付の図１は本発明にかかる燃料油移送装置の一具体例のフローシートである。図２および図３は本発明に用いられる弁の一具体例の断面図であって、図２は弁を閉めた状態、図３は弁を開けた状態を表す。
【００１１】
図１において、本発明の燃料油移送装置は吸入主管１４を備えた燃料油貯蔵タンク１と、この貯蔵タンク１に移送管２を介して連通された燃料油澄タンク３と、移送管２に設けられ、この移送管２を通して貯蔵タンク１中の燃料油を澄タンク３に移送する移送ポンプ４と、澄タンク３と連通した燃料油サービスタンク５と、澄タンク３および／またはサービスタンク５と貯蔵タンク１とを連通する吸入管６と、この吸入管６に配置され、澄タンク３および／またはサービスタンク５中の加熱された燃料油を貯蔵タンク１に流下せしめる流下ポンプ７とを備え、加熱された燃料油を貯蔵タンク１の燃料油に吸入主管１４を通して流下混合して貯蔵タンク１中の燃料油を加熱するようにしたものである。図１中、８はヒータ、９は温度センサ、１０、１１、１２、１３はバルブである。
【００１２】
上述の本発明装置において、改良の主ポイントは移送管２の移送ポンプ４よりも下流側にスプリング１６を保持した弁１５を設けたことに存し、これにより澄タンク３および／またはサービスタンク５中の加熱された燃料油を移送管２の方向に逆流させずに、良好に前記貯蔵タンク１に流下せしめるようにしたことを特徴とする。
【００１３】
図２は弁１５の閉じた状態、図３は開いた状態の断面図であり、運転休止中は図２に示されるように、ハンドル１８を閉めて、弁押え２１を弁座２２に当接させておく。この状態では入口１９からの燃料油は出口２０に進行することがない。
【００１４】
運転中、通常は図３に示されるようにハンドル１８を開け、弁棒２３を上方に上げた状態にしておく。この状態でも、通常はスプリング１６の押圧力によって弁押え２１が座金１７を介して弁座２２に押圧される。このため弁押え２１は弁座２２に当接しており、入口１９からの燃料油は弁押え２１で阻止されて出口２０へは通じない。したがって、加熱された燃料油が移送管２の方向に逆流されることは防止される。同時に、燃料油貯蔵タンク１から吸入主管14を経て発生した空気あわもつぶされて消えてしまう。
【００１５】
スプリング１６は任意の圧力、例えば約0.０９８ＭＰａ．1.０Kgf/cm2(全開時）に設定することができる。これにより、燃料油貯蔵タンク１からの加熱された燃料油は入口１９から弁押え２１を押し上げて出口２０方向に流れる。このとき、空気で発生してあわも圧力により消去する。
【００１６】
【発明の効果】
以上のとおり、本発明は移送管２の移送ポンプ４よりも下流側にスプリング１６を保持した弁１５を設けたから、澄タンク３および／またはサービスタンク５中の加熱された燃料油を移送管２に逆流させずに、良好に前記貯蔵タンクに流下せしめて逆流を防止し、かつ、移送管２中の空気あわも自動的につぶれて消えてしまう。
【図面の簡単な説明】
【図１】本発明にかかる逆流防止機構を備えた燃料油移送装置の一具体例のフローシートである。
【図２】本発明にかかる弁の閉じた状態の断面図である。
【図３】本発明にかかる弁の開いた状態の断面図である。
【符号の説明】
１ 燃料油貯蔵タンク
２ 移送管
３ 燃料油澄タンク
４ 移送ポンプ
５ 燃料油サービスタンク
６ 吸入管
７ 流下ポンプ
15 弁
16 スプリング
17 座金
18 ハンドル
19 入口
20 出口
21 弁押え
22 弁座
23 弁棒[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a ship, a generator boiler (hereinafter referred to as “ship, etc.”), a fuel oil transfer device, and more specifically, a fuel oil storage tank having a suction main pipe, and a transfer pipe to the storage tank. A fuel oil tank connected to the tank, a transfer pump provided in the transfer pipe for transferring the fuel oil in the storage tank to the tank through the transfer pipe, and a fuel oil service tank connected to the tank A suction pipe communicating with the clarification tank and / or the service tank and the storage tank; and the storage tank is configured to supply the heated fuel oil in the clarification tank and / or the service tank to the storage tank. And a downflow pump for flowing down the fuel oil in the storage tank by heating and mixing the heated fuel oil with the fuel oil in the storage tank through a suction main pipe. In particular, the fuel oil transfer apparatus is provided with a backflow prevention mechanism that allows the heated fuel oil in the clarification tank and / or the service tank to flow down to the storage tank without flowing back to the transfer pipe. The present invention relates to a fuel oil transfer device.
[0002]
[Prior art]
When supplying fuel oil to an engine in a ship or the like, usually, the fuel oil is first sent from a fuel oil storage tank to a fuel oil tank through a transfer pipe by a transfer pump, and then from the fuel oil tank to a fuel oil service. It is sent to a tank (fuel oil dispensing tank), from which fuel oil is supplied to the engine. At this time, the fuel oil in the fuel oil storage tank needs to be heated in order to reduce the viscosity and facilitate transfer.
[0003]
Conventionally, as a fuel oil transfer device having this kind of heating equipment, a device that does not include the valve 15 in FIG. 1, that is, a fuel oil storage tank 1 and a heating device (not shown) communicated with this via a transfer pipe 2. A fuel oil tank 3, a transfer pump 4 for transferring the fuel oil in the fuel oil storage tank 1 to the fuel oil tank 3, and a fuel oil service tank 5 communicated with the fuel oil tank 3. The fuel oil tank 3 and the fuel oil service tank 5, or both of the fuel oil tank 3 and the fuel oil service tank 5 are connected to the fuel oil storage tank 1. There is known an apparatus provided with a flow-down pump 7 for flowing the heated fuel oil in either one or both of them into the fuel oil storage tank 1. In FIG. 1, 8 is a heater, 9 is a temperature sensor, 10, 11, 12, and 13 are valves.
[0004]
1, the fuel oil in the fuel oil tank 3 is heated by a heating device (not shown), then cleaned by a fuel oil cleaner (not shown), and sent to the fuel oil service tank 5, from which it is not shown. Distributed and supplied to main engines, auxiliary machines, boilers, etc. At the same time, part of the heated fuel oil is caused to flow down to the fuel oil storage tank 1 through the suction main pipe 14 in the tank 1 by the operation of the flow down pump 7, and the fuel oil in the tank 1 is heated.
[0005]
[Problems to be Solved by the Invention]
In the apparatus shown in FIG. 1, when a part of the heated fuel oil is returned from the fuel oil tank 3 or the fuel oil service tank 5 to the fuel oil storage tank 1, the fuel oil in the tank 1 is heated. The amount and temperature to be returned must be changed in accordance with the length of the suction pipe 6 and the transfer pipe 2, or the temperature change of the seawater and the outside air.
[0006]
In other words, when the amount of heat of the heated fuel oil to be returned is larger than the appropriate value, the amount of heat released to the seawater or the outside air is increased, and when the amount is smaller, the required amount of fuel oil cannot be transferred. It is necessary to keep the amount and temperature of the heated fuel oil returned properly.
[0007]
However, in the apparatus of FIG. 1 that does not include the valve 15 described above, when a part of the heated fuel oil in the clarification tank and / or the service tank is caused to flow down to the fuel oil storage tank, the fuel oil enters the fuel oil storage tank. It does not return and flows backward in the direction of the transfer pipe. Further, air bubbles are generated when the fuel oil from the fuel oil storage tank is sent in the direction of the transfer pipe.
[0008]
Accordingly, an object of the present invention is to prevent the heated fuel oil in the clarification tank and / or the service tank from flowing back to the storage tank without flowing back to the transfer pipe, preventing the backflow, and It is an object of the present invention to provide a fuel oil transfer device that automatically eliminates bubbles and improves the above-mentioned drawbacks of the known art.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, according to the present invention, a fuel oil storage tank having a suction main pipe, a fuel oil tank connected to the storage tank via a transfer pipe, and the transfer pipe are provided. A transfer pump for transferring fuel oil in the storage tank to the clarification tank through the transfer pipe, a fuel oil service tank in communication with the clarification tank, and the clarification tank and / or the service tank and the storage tank in communication. A suction pipe disposed in the suction pipe, and a flow down pump for flowing the heated fuel oil in the clarification tank and / or the service tank to the storage tank, and storing the heated fuel oil in the storage tank In the fuel oil transfer device for heating and mixing the fuel oil in the storage tank by flowing down and mixing with the fuel oil in the tank through the suction main pipe, the transfer pump of the transfer pipe Remote valve holding spring provided on the downstream side, the spring is obtained and set to an arbitrary pressure, the valve holding such a spring contact with the valve seat the valve pressed by the pressing force of the spring, is heated The fuel oil is prevented from flowing back in the direction of the transfer pipe, so that the heated fuel oil in the clarification tank and / or the service tank does not flow back to the transfer pipe and flows down to the storage tank well. It is characterized by the fact that it is made to squeeze.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, the present invention will be specifically described with reference to the accompanying drawings. FIG. 1 attached herewith is a flow sheet of a specific example of the fuel oil transfer device according to the present invention. 2 and 3 are sectional views of a specific example of the valve used in the present invention. FIG. 2 shows a state in which the valve is closed, and FIG. 3 shows a state in which the valve is opened.
[0011]
In FIG. 1, the fuel oil transfer device of the present invention includes a fuel oil storage tank 1 having a suction main pipe 14, a fuel oil tank 3 communicated with the storage tank 1 via a transfer pipe 2, and a transfer pipe 2. A transfer pump 4 for transferring the fuel oil in the storage tank 1 to the clear tank 3 through the transfer pipe 2, a fuel oil service tank 5 communicating with the clear tank 3, a clear tank 3 and / or a service tank 5; A suction pipe 6 communicating with the storage tank 1, and a flow-down pump 7 disposed in the suction pipe 6 and allowing the heated fuel oil in the clarification tank 3 and / or the service tank 5 to flow down to the storage tank 1, The heated fuel oil is mixed with the fuel oil in the storage tank 1 through the suction main pipe 14 to heat the fuel oil in the storage tank 1. In FIG. 1, 8 is a heater, 9 is a temperature sensor, 10, 11, 12, and 13 are valves.
[0012]
In the above-described apparatus of the present invention, the main point of improvement resides in that the valve 15 holding the spring 16 is provided on the downstream side of the transfer pump 4 of the transfer pipe 2, whereby the clear tank 3 and / or the service tank 5. The heated fuel oil inside is not allowed to flow backward in the direction of the transfer pipe 2 but is allowed to flow down to the storage tank 1 satisfactorily.
[0013]
2 is a cross-sectional view of the valve 15 in a closed state, and FIG. 3 is a cross-sectional view of the valve 15 in an open state. During operation stop, the handle 18 is closed and the valve presser 21 is brought into contact with the valve seat 22 as shown in FIG. Let me. In this state, the fuel oil from the inlet 19 does not travel to the outlet 20.
[0014]
During operation, the handle 18 is normally opened as shown in FIG. 3, and the valve stem 23 is raised upward. Even in this state, the valve presser 21 is normally pressed against the valve seat 22 via the washer 17 by the pressing force of the spring 16. For this reason, the valve presser 21 is in contact with the valve seat 22, and fuel oil from the inlet 19 is blocked by the valve presser 21 and does not pass to the outlet 20. Accordingly, the heated fuel oil is prevented from flowing backward in the direction of the transfer pipe 2. At the same time, air bubbles generated from the fuel oil storage tank 1 through the suction main pipe 14 are crushed and disappear.
[0015]
The spring 16 can be of any pressure, for example about 0.098 MPa. It can be set to 1.0Kgf / cm 2 (when fully open). Thereby, the heated fuel oil from the fuel oil storage tank 1 pushes up the valve presser 21 from the inlet 19 and flows in the direction of the outlet 20. At this time, air generated by air is erased by pressure.
[0016]
【The invention's effect】
As described above, since the valve 15 holding the spring 16 is provided on the downstream side of the transfer pump 4 of the transfer pipe 2 according to the present invention, the heated fuel oil in the clarification tank 3 and / or the service tank 5 is transferred to the transfer pipe 2. In this case, the air can flow well into the storage tank without being backflowed to prevent backflow, and the air bubbles in the transfer pipe 2 are automatically crushed and disappear.
[Brief description of the drawings]
FIG. 1 is a flow sheet of a specific example of a fuel oil transfer device provided with a backflow prevention mechanism according to the present invention.
FIG. 2 is a sectional view of a valve according to the present invention in a closed state.
FIG. 3 is a sectional view of the valve according to the present invention in an open state.
[Explanation of symbols]
1 Fuel Oil Storage Tank 2 Transfer Pipe 3 Fuel Oil Clearing Tank 4 Transfer Pump 5 Fuel Oil Service Tank 6 Suction Pipe 7 Downflow Pump
15 valves
16 Spring
17 Washer
18 Handle
19 Entrance
20 Exit
21 Valve presser foot
22 Valve seat
23 Valve stem

Claims (3)

吸入主管を備えた燃料油貯蔵タンクと、この貯蔵タンクに移送管を介して連通された燃料油澄タンクと、前記移送管に設けられ、この移送管を通して前記貯蔵タンク中の燃料油を前記澄タンクに移送する移送ポンプと、前記澄タンクと連通した燃料油サービスタンクと、前記澄タンクと前記貯蔵タンクとを連通する吸入管と、この吸入管に配置され、前記澄タンク中の加熱された燃料油を前記貯蔵タンクに流下せしめる流下ポンプとを備え、前記加熱された燃料油を前記貯蔵タンクの燃料油に吸入主管を通して流下混合して前記貯蔵タンク中の燃料油を加熱するようにした燃料油移送装置において、前記移送管の移送ポンプよりも下流側にスプリングを保持したバルブを設け、前記スプリングは任意の圧力に設定し得、このようなスプリングを保持したバルブはスプリングの押圧力によって弁押えを弁座に当接し、加熱された燃料油の移送管の方向への逆流を防止してなり、これにより前記澄タンク中の加熱された燃料油を移送管に逆流させずに、良好に前記貯蔵タンクに流下せしめるようにしたことを特徴とする逆流防止機構を備えた燃料油移送装置。A fuel oil storage tank provided with a suction main pipe, a fuel oil tank connected to the storage tank via a transfer pipe, and provided in the transfer pipe, through which the fuel oil in the storage tank is passed through the transfer tank. A transfer pump for transferring to the tank; a fuel oil service tank in communication with the clarification tank; a suction pipe in communication with the clarification tank and the storage tank; and a heating pipe in the clarification tank disposed in the suction pipe A flow pump for flowing fuel oil into the storage tank, and the heated fuel oil is mixed into the fuel oil in the storage tank through a suction main pipe to heat the fuel oil in the storage tank In the oil transfer device, a valve holding a spring is provided on the downstream side of the transfer pump of the transfer pipe, and the spring can be set to an arbitrary pressure. It retained valve contacts the valve seat the valve pressed by the pressing force of the spring, will prevent reversal of the direction of the transfer tube of heated fuel oil, thereby heating fuel oil in the supernatant tank A fuel oil transfer device equipped with a backflow prevention mechanism characterized in that it can be made to flow down to the storage tank satisfactorily without flowing back into the transfer pipe. 吸入主管を備えた燃料油貯蔵タンクと、この貯蔵タンクに移送管を介して連通された燃料油澄タンクと、前記移送管に設けられ、この移送管を通して前記貯蔵タンク中の燃料油を前記澄タンクに移送する移送ポンプと、前記澄タンクと連通した燃料油サービスタンク
と、前記サービスタンクと前記貯蔵タンクとを連通する吸入管と、この吸入管に配置され、前記サービスタンク中の加熱された燃料油を前記貯蔵タンクに流下せしめる流下ポンプとを備え、前記加熱された燃料油を前記貯蔵タンクの燃料油に吸入主管を通して流下混合して前記貯蔵タンク中の燃料油を加熱するようにした燃料油移送装置において、前記移送管の移送ポンプよりも下流側にスプリングを保持したバルブを設け、前記スプリングは任意の圧力に設定し得、このようなスプリングを保持したバルブはスプリングの押圧力によって弁押えを弁座に当接し、加熱された燃料油の移送管の方向への逆流を防止してなり、これにより前記サービスタンク中の加熱された燃料油を移送管に逆流させずに、良好に前記貯蔵タンクに流下せしめるようにしたことを特徴とする逆流防止機構を備えた燃料油移送装置。A fuel oil storage tank provided with a suction main pipe, a fuel oil tank connected to the storage tank via a transfer pipe, and provided in the transfer pipe, through which the fuel oil in the storage tank is passed through the transfer tank. A transfer pump for transferring to the tank; a fuel oil service tank in communication with the clarification tank; a suction pipe in communication with the service tank and the storage tank; and a heating pipe in the service tank disposed in the suction pipe A flow pump for flowing fuel oil into the storage tank, and the heated fuel oil is mixed into the fuel oil in the storage tank through a suction main pipe to heat the fuel oil in the storage tank In the oil transfer device, a valve holding a spring is provided on the downstream side of the transfer pump of the transfer pipe, and the spring can be set to an arbitrary pressure. Valve which holds the spring contact in the valve seat the valve pressed by the pressing force of the spring, will prevent reversal of the direction of the transfer tube of heated fuel oil, thereby heating fuel in the service tank A fuel oil transfer device provided with a backflow prevention mechanism, wherein the oil is allowed to flow well into the storage tank without flowing back into the transfer pipe. 吸入主管を備えた燃料油貯蔵タンクと、この貯蔵タンクに移送管を介して連通された燃料油澄タンクと、前記移送管に設けられ、この移送管を通して前記貯蔵タンク中の燃料油を前記澄タンクに移送する移送ポンプと、前記澄タンクと連通した燃料油サービスタンクと、前記澄タンクおよび前記サービスタンクと前記貯蔵タンクとを連通する吸入管と、この吸入管に配置され、前記澄タンクおよび前記サービスタンク中の加熱された燃料油を前記貯蔵タンクに流下せしめる流下ポンプとを備え、前記加熱された燃料油を前記貯蔵タンクの燃料油に吸入主管を通して流下混合して前記貯蔵タンク中の燃料油を加熱するようにした燃料油移送装置において、前記移送管の移送ポンプよりも下流側にスプリングを保持したバルブを設け、前記スプリングは任意の圧力に設定し得、このようなスプリングを保持したバルブはスプリングの押圧力によって弁押えを弁座に当接し、加熱された燃料油の移送管の方向への逆流を防止してなり、これにより前記澄タンクおよび前記サービスタンク中の加熱された燃料油を移送管に逆流させずに、良好に前記貯蔵タンクに流下せしめるようにしたことを特徴とする逆流防止機構を備えた燃料油移送装置。A fuel oil storage tank provided with a suction main pipe, a fuel oil tank connected to the storage tank via a transfer pipe, and provided in the transfer pipe, through which the fuel oil in the storage tank is passed through the transfer tank. a transfer pump for transferring to the tank, the fuel oil service tank in communication with the tank Kiyoshi, a suction pipe communicating with said storage tank and the supernatant tank and the service tank, disposed in the suction pipe, the supernatant tank and A flow pump for flowing down the heated fuel oil in the service tank to the storage tank, and mixing the heated fuel oil into the fuel oil in the storage tank through a suction main pipe to mix the fuel in the storage tank In the fuel oil transfer device for heating oil, a valve holding a spring is provided on the downstream side of the transfer pump of the transfer pipe, and the spring is provided. The valve holding the spring can abut the valve presser against the valve seat by the pressing force of the spring to prevent the backflow of heated fuel oil in the direction of the transfer pipe. Thus, the fuel provided with the backflow prevention mechanism is characterized in that the heated fuel oil in the clarification tank and the service tank is allowed to flow down to the storage tank satisfactorily without flowing back to the transfer pipe. Oil transfer device.
JP2001116747A 2001-04-16 2001-04-16 Fuel oil transfer device with backflow prevention mechanism Expired - Lifetime JP3807597B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102312760A (en) * 2010-07-08 2012-01-11 北辰产业株式会社 Apparatus for transporting fuel oil

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100579968B1 (en) * 2003-07-25 2006-05-12 현대자동차주식회사 Returnless fuel system for LPI vehicle

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102312760A (en) * 2010-07-08 2012-01-11 北辰产业株式会社 Apparatus for transporting fuel oil
TWI495611B (en) * 2010-07-08 2015-08-11 Hokushin Engineering Co Ltd Fuel oil transfer device

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