JP2019051798A - Vessel - Google Patents

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JP2019051798A
JP2019051798A JP2017176714A JP2017176714A JP2019051798A JP 2019051798 A JP2019051798 A JP 2019051798A JP 2017176714 A JP2017176714 A JP 2017176714A JP 2017176714 A JP2017176714 A JP 2017176714A JP 2019051798 A JP2019051798 A JP 2019051798A
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fuel oil
path
tank
hfo
consumption
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JP6971734B2 (en
Inventor
勇人 角田
Yuto Tsunoda
勇人 角田
貴章 溝越
Takaaki Mizokoshi
貴章 溝越
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Sumitomo Heavy Industries Marine and Engineering Co Ltd
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Sumitomo Heavy Industries Marine and Engineering Co Ltd
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Priority to JP2017176714A priority Critical patent/JP6971734B2/en
Priority to CN201810705674.XA priority patent/CN109501996A/en
Priority to KR1020180101176A priority patent/KR102517593B1/en
Publication of JP2019051798A publication Critical patent/JP2019051798A/en
Priority to JP2021179316A priority patent/JP7339991B2/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B17/00—Vessels parts, details, or accessories, not otherwise provided for
    • B63B17/0027—Tanks for fuel or the like ; Accessories therefor, e.g. tank filler caps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H21/00—Use of propulsion power plant or units on vessels
    • B63H21/38—Apparatus or methods specially adapted for use on marine vessels, for handling power plant or unit liquids, e.g. lubricants, coolants, fuels or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B71/00—Designing vessels; Predicting their performance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0602—Control of components of the fuel supply system
    • F02D19/0607—Control of components of the fuel supply system to adjust the fuel mass or volume flow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F9/00—Measuring volume flow relative to another variable, e.g. of liquid fuel for an engine
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/30—Use of alternative fuels, e.g. biofuels

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • General Engineering & Computer Science (AREA)
  • Measuring Volume Flow (AREA)

Abstract

To measure a consumption amount of fuel oil by types at good accuracy.SOLUTION: A vessel 1 has: a first fuel oil tank 11 for retaining first fuel oil; a second fuel oil tank 12 for retaining second fuel oil differing from the first fuel oil; a first fuel oil passage L1 for discharging the first fuel oil from the first fuel oil tank 11; a second fuel oil passage L2 for discharging the second fuel oil from the second fuel oil tank 12; a confluent passage L3 provided in a latter stage of the first fuel oil passage L1 and the second fuel oil passage L2 for combining the fuel oil from these passages; a combustion engine 15 for conducting and burning oil from the confluent passage L3; a first fuel oil consumption amount measuring unit 13 for measuring a consumption amount of the first fuel oil in an earlier stage than the confluent passage L3; and a second fuel oil consumption amount measuring unit 14 for measuring the consumption amount of the second fuel oil in the earlier stage than the confluent passage L3.SELECTED DRAWING: Figure 1

Description

本発明は、船舶に関し、特に燃料の種類に応じた消費量を算出するものに関する。   The present invention relates to a ship, and more particularly to a method for calculating consumption according to the type of fuel.

船舶において燃料タンクから供給される燃料油の消費量を計測する方法として、従来から燃料タンクに設けられる液面計を用いた方法が用いられている。一方、特許文献１では、液面計を用いずに燃料油の消費量を計測する自動車用の燃料残量計測装置が示されている。   As a method for measuring the consumption amount of fuel oil supplied from a fuel tank in a ship, a method using a liquid level gauge provided in the fuel tank has been conventionally used. On the other hand, Patent Document 1 discloses a fuel remaining amount measuring device for automobiles that measures the amount of fuel oil consumed without using a liquid level gauge.

特開平１１−１４８８５１号公報Japanese Patent Laid-Open No. 11-148851

近年、海運業界において燃費報告に関する法整備等が進められ、燃料油の種類毎に燃料の消費量を高い精度で計測して報告することが求められるようになってきた。しかしながら、従来の船舶では燃料油の消費量を種類毎に高い精度で計測することは求められていなかった。   In recent years, legislation on fuel consumption reporting has been promoted in the shipping industry, and it has become necessary to measure and report fuel consumption with high accuracy for each type of fuel oil. However, it has not been required for conventional ships to measure the fuel oil consumption for each type with high accuracy.

本発明は上記を鑑みてなされたものであり、燃料油の種類毎に消費量を精度良く測定することが可能な船舶を提供することを目的とする。   The present invention has been made in view of the above, and an object of the present invention is to provide a ship capable of accurately measuring consumption for each type of fuel oil.

上記目的を達成するため、本発明の一形態に係る船舶は、第１燃料油を貯留する第１燃料油タンクと、前記第１燃料油とは異なる第２燃料油を貯留する第２燃料油タンクと、前記第１燃料油タンクから前記第１燃料油を排出する第１燃料油経路と、前記第２燃料油タンクから前記第２燃料油を排出する第２燃料油経路と、前記第１燃料油経路及び前記第２燃料油経路の後段に設けられて、前記第１燃料油経路及び前記第２燃料油経路からの燃料油を合流させる合流経路と、前記合流経路からの燃料油を導入して燃焼させる燃焼機関と、前記合流経路よりも前段において、前記第１燃料油の消費量を測定する第１燃料油消費量測定部と、前記合流経路よりも前段において、前記第２燃料油の消費量を測定する第２燃料油消費量測定部と、を有する。   In order to achieve the above object, a ship according to an aspect of the present invention includes a first fuel oil tank that stores a first fuel oil, and a second fuel oil that stores a second fuel oil different from the first fuel oil. A tank, a first fuel oil path for discharging the first fuel oil from the first fuel oil tank, a second fuel oil path for discharging the second fuel oil from the second fuel oil tank, and the first A merging path that is provided downstream of the fuel oil path and the second fuel oil path to join the fuel oil from the first fuel oil path and the second fuel oil path, and introduces the fuel oil from the merging path A combustion engine to be burned, a first fuel oil consumption measuring unit that measures the consumption amount of the first fuel oil at a stage before the merging path, and the second fuel oil at a stage before the merging path. A second fuel oil consumption measuring unit for measuring consumption of .

上記の船舶によれば、互いに異なる２種類の燃料油が合流経路を経て燃焼機関に対して供給される場合に、合流経路よりも前段に第１燃料油消費量測定部が設けられると共に、合流経路よりも前段に第２燃料油消費量測定部が設けられる。したがって、燃料油の種類毎に、その消費量を精度良く測定することが可能となる。   According to the ship described above, when two different types of fuel oil are supplied to the combustion engine via the merging path, the first fuel oil consumption measuring unit is provided before the merging path. A second fuel oil consumption measuring unit is provided before the path. Therefore, it is possible to accurately measure the consumption for each type of fuel oil.

ここで、前記第１燃料油消費量測定部及び前記第２燃料油消費量測定部の一方は、前記合流経路よりも前段の経路上に設けられた、前記合流経路へ流れる燃料油の量を測定する流量計である態様とすることができる。   Here, one of the first fuel oil consumption measuring unit and the second fuel oil consumption measuring unit is configured to calculate an amount of fuel oil flowing to the merge path provided on a path preceding the merge path. It can be set as the aspect which is a flowmeter to measure.

上記のように、第１燃料油消費量測定部及び第２燃料油消費量測定部の一方が合流経路へ流れる燃料油の量を測定する流量計であることで、流量計により燃料油の移動量を直接測定することができ、流量計が設けられている経路での燃料油の消費量を精度良く測定することが可能となる。   As described above, since one of the first fuel oil consumption measuring unit and the second fuel oil consumption measuring unit is a flow meter that measures the amount of fuel oil flowing to the merge path, the fuel oil is moved by the flow meter. It is possible to directly measure the amount, and it is possible to accurately measure the consumption amount of the fuel oil in the route provided with the flow meter.

また、前記第１燃料油経路上に、前記第１燃料油を貯留する中間タンクをさらに有し、前記第１燃料油消費量測定部は、前記第１燃料油タンクからの前記第１燃料油の排出量を測定する流量計と、前記中間タンクでの前記第１燃料油の貯留量を測定する貯留量測定部と、を有する態様とすることができる。   Further, an intermediate tank for storing the first fuel oil is further provided on the first fuel oil path, and the first fuel oil consumption measuring unit is configured to receive the first fuel oil from the first fuel oil tank. A flow meter that measures the amount of discharged fuel and a storage amount measuring unit that measures the amount of storage of the first fuel oil in the intermediate tank.

上記のように、第１燃料油経路上に中間タンクが設けられている場合、第１燃料油タンクからの排出量を測定する流量計と、中間タンクでの第１燃料油の貯留量を測定する貯留量測定部と、を組み合わせることで、中間タンクでの第１燃料油の消費量を精度良く測定することが可能となる。   As described above, when the intermediate tank is provided on the first fuel oil path, the flow meter for measuring the discharge amount from the first fuel oil tank and the storage amount of the first fuel oil in the intermediate tank are measured. By combining the storage amount measuring unit that performs the measurement, the consumption amount of the first fuel oil in the intermediate tank can be accurately measured.

前記流量計は、質量流量計である態様とすることができる。また、前記流量計は、体積流量計と温度または密度測定部とである態様とすることができる。流量計を上記の構成とすることで、流量計が設けられている経路での燃料油の消費量を精度良く測定することが可能となる。   The flow meter may be a mass flow meter. Moreover, the said flow meter can be made into the aspect which is a volume flow meter and a temperature or a density measurement part. By configuring the flow meter as described above, it is possible to accurately measure the amount of fuel oil consumed in the path where the flow meter is provided.

また、前記貯留量測定部は、前記中間タンク内での前記第１燃料油の液面を測定する液面計と、温度または密度測定部とである態様とすることができる。   The storage amount measuring unit may be a level gauge that measures the level of the first fuel oil in the intermediate tank, and a temperature or density measuring unit.

貯留量測定部が中間タンク内での第１燃料油の液面を測定する液面計と、温度または密度測定部とであることで、液面計を用いて中間タンク内の第１燃料油の貯留量をより簡単に測定することができる。   Since the storage amount measuring unit is a liquid level meter that measures the liquid level of the first fuel oil in the intermediate tank and the temperature or density measuring unit, the first fuel oil in the intermediate tank using the liquid level meter Can be measured more easily.

本発明によれば、燃料油の種類毎に消費量を精度良く測定することが可能な船舶が提供される。   ADVANTAGE OF THE INVENTION According to this invention, the ship which can measure consumption accurately for every kind of fuel oil is provided.

第１実施形態に係る船舶に含まれる燃料油管理システムの概略構成図である。1 is a schematic configuration diagram of a fuel oil management system included in a ship according to a first embodiment. 第２実施形態に係る船舶に含まれる燃料油管理システムの概略構成図である。It is a schematic block diagram of the fuel oil management system contained in the ship which concerns on 2nd Embodiment. 第３実施形態に係る船舶に含まれる燃料油管理システムの概略構成図である。It is a schematic block diagram of the fuel oil management system contained in the ship which concerns on 3rd Embodiment. 第３実施形態の変形例を示す図である。It is a figure which shows the modification of 3rd Embodiment.

以下、添付図面を参照して、本発明を実施するための形態を詳細に説明する。なお、図面の説明においては同一要素には同一符号を付し、重複する説明を省略する。   DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the present invention will be described in detail with reference to the accompanying drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.

（第１実施形態）
図１は、本発明の第１実施形態に係る船舶１に含まれる燃料油管理システム２の概略構成図である。燃料油管理システム２は、船舶１で使用される燃料油の管理を行うシステムであり、船舶１内に設けられる。図１に示すように、燃料油管理システム２は、第１燃料油タンク１１と、第２燃料油タンク１２と、第１燃料油消費量測定部１３と、第２燃料油消費量測定部１４と、燃焼機関１５と、を有する。 (First embodiment)
FIG. 1 is a schematic configuration diagram of a fuel oil management system 2 included in a ship 1 according to the first embodiment of the present invention. The fuel oil management system 2 is a system that manages fuel oil used in the ship 1 and is provided in the ship 1. As shown in FIG. 1, the fuel oil management system 2 includes a first fuel oil tank 11, a second fuel oil tank 12, a first fuel oil consumption measuring unit 13, and a second fuel oil consumption measuring unit 14. And a combustion engine 15.

燃料油管理システム２では、上記のように少なくとも２種類の燃料油（第１燃料油及び第２燃料油）が個別に貯留される２つの燃料油タンクが設けられている。すなわち、第１燃料油タンク１１及び第２燃料油タンク１２には、互いに異なる種類の燃料油が貯留される。これらの燃料油タンクから供給される２種類の燃料油は、同一の燃焼機関１５に対して供給される。燃焼機関１５とは、燃料油を燃焼して消費する機関であり、例えば、主機、発電機、ボイラ等が挙げられる。   In the fuel oil management system 2, as described above, two fuel oil tanks are provided in which at least two types of fuel oil (first fuel oil and second fuel oil) are individually stored. That is, different types of fuel oil are stored in the first fuel oil tank 11 and the second fuel oil tank 12. Two types of fuel oil supplied from these fuel oil tanks are supplied to the same combustion engine 15. The combustion engine 15 is an engine that burns and consumes fuel oil, and examples thereof include a main engine, a generator, and a boiler.

したがって、燃料油管理システム２では、第１燃料油タンク１１から供給される第１燃料油が流れる第１燃料油経路Ｌ１と、第２燃料油タンク１２から供給される第２燃料油が流れる第２燃料油経路Ｌ２と、第１燃料油経路Ｌ１からの第１燃料油及び第２燃料油経路Ｌ２からの第２燃料油の両方が流れる合流経路Ｌ３と、を有する。第１燃料油経路Ｌ１を流れる第１燃料油は、合流経路Ｌ３を経て燃焼機関１５へ供給される。また、第２燃料油経路Ｌ２を流れる第２燃料油は、合流経路Ｌ３を経て燃焼機関１５へ供給される。燃焼機関１５へ供給する燃料油の種類及びその供給量は、図示しない制御部により制御される。制御部からの指示に基づいて、バルブが開閉されたりポンプが作動したりすることによって、燃焼機関１５へ供給する燃料油の種類及び供給量が制御される。   Therefore, in the fuel oil management system 2, the first fuel oil path L1 through which the first fuel oil supplied from the first fuel oil tank 11 flows and the second fuel oil supplied from the second fuel oil tank 12 flow through. 2 fuel oil path L2, and a merging path L3 through which both the first fuel oil from the first fuel oil path L1 and the second fuel oil from the second fuel oil path L2 flow. The first fuel oil flowing through the first fuel oil path L1 is supplied to the combustion engine 15 via the merge path L3. Further, the second fuel oil flowing through the second fuel oil path L2 is supplied to the combustion engine 15 via the merging path L3. The type and amount of fuel oil supplied to the combustion engine 15 are controlled by a control unit (not shown). Based on an instruction from the control unit, the type and amount of fuel oil supplied to the combustion engine 15 are controlled by opening and closing the valve and operating the pump.

第１燃料油消費量測定部１３は、第１燃料油経路Ｌ１又はそれよりも前段に設けられる。第１燃料油消費量測定部１３は、第１燃料油の消費量、すなわち、第１燃料油経路Ｌ１を経て燃焼機関１５へ供給された第１燃料油の重量を測定する機能を有する。第１燃料油経路Ｌ１から燃焼機関１５へ供給された第１燃料油の量を測定する方法としては、概略、流量計等を用いて第１燃料油経路Ｌ１を流れて燃焼機関１５へ供給される第１燃料油の流量（体積）を測定し、当該流量から重量を算出する方法と、液面計等を用いて第１燃料油タンク１１に貯留される第１燃料油の体積変化を測定し、当該体積変化から重量を算出する方法と、が挙げられる。燃料油の体積から重量を算出する場合には、燃料油の密度が必要になるが、密度は温度によって変化するため、その補正のために温度に係る情報が必要となる。流量計には、体積流量計と質量流量計とがある。体積流量計は、求めた体積流量を質量流量に変換するための密度を温度補正するための温度センサ（温度測定部）または密度センサ（密度測定部）を適宜設けるが、質量流量計は直接質量を測定できるので温度センサ等は必要ない。液面計は体積しか測定できないので、温度センサ（温度測定部）または密度センサ（密度測定部）等を設ける。ただし、第１燃料油消費量測定部１３の装置構成は、適宜変更することができる。また、密度センサは密度を直接計測できるので温度補正をする必要はない。さらに、密度センサは、γ線が物質を透過する際の吸収度合を計測するもの、密度の変化による自由振動数の変化を利用して計測するもの等が市販されている。   The first fuel oil consumption measuring unit 13 is provided at the first fuel oil path L1 or before the first fuel oil path L1. The first fuel oil consumption measuring unit 13 has a function of measuring the consumption of the first fuel oil, that is, the weight of the first fuel oil supplied to the combustion engine 15 via the first fuel oil path L1. As a method for measuring the amount of the first fuel oil supplied from the first fuel oil path L1 to the combustion engine 15, generally, the flow is supplied to the combustion engine 15 through the first fuel oil path L1 using a flow meter or the like. Measure the volume change of the first fuel oil stored in the first fuel oil tank 11 using a method of measuring the flow rate (volume) of the first fuel oil and calculating the weight from the flow rate, and a level gauge And a method of calculating the weight from the volume change. When calculating the weight from the volume of the fuel oil, the density of the fuel oil is required. However, since the density changes depending on the temperature, information on the temperature is necessary for the correction. The flow meter includes a volume flow meter and a mass flow meter. The volume flow meter is appropriately provided with a temperature sensor (temperature measurement unit) or a density sensor (density measurement unit) for temperature correction of the density for converting the obtained volume flow rate into a mass flow rate. Therefore, a temperature sensor or the like is not necessary. Since the liquid level gauge can only measure the volume, a temperature sensor (temperature measurement unit) or a density sensor (density measurement unit) is provided. However, the apparatus configuration of the first fuel oil consumption measuring unit 13 can be changed as appropriate. Further, since the density sensor can directly measure the density, it is not necessary to perform temperature correction. Furthermore, as the density sensor, a sensor that measures the degree of absorption when γ rays pass through a substance, a sensor that uses a change in free frequency due to a change in density, and the like are commercially available.

第２燃料油消費量測定部１４は、第２燃料油経路Ｌ２又はそれよりも前段に設けられる。第２燃料油消費量測定部１４は、第２燃料油の消費量、すなわち、第２燃料油経路Ｌ２を経て燃焼機関１５へ供給された第２燃料油の重量を測定する機能を有する。したがって、第１燃料油消費量測定部１３と同様に、第２燃料油消費量測定部１４は、第２燃料油経路Ｌ２での流量計又は第２燃料油タンク１２での液面計と、第２燃料油の温度を計測する温度センサと、を含む。ただし、第２燃料油消費量測定部１４の装置構成は、適宜変更することができる。   The second fuel oil consumption measuring unit 14 is provided in the second fuel oil path L2 or in front of it. The second fuel oil consumption measuring unit 14 has a function of measuring the consumption of the second fuel oil, that is, the weight of the second fuel oil supplied to the combustion engine 15 via the second fuel oil path L2. Therefore, similarly to the first fuel oil consumption measuring unit 13, the second fuel oil consumption measuring unit 14 includes a flow meter in the second fuel oil path L2 or a liquid level meter in the second fuel oil tank 12, and And a temperature sensor for measuring the temperature of the second fuel oil. However, the apparatus configuration of the second fuel oil consumption measuring unit 14 can be changed as appropriate.

上記の燃料油管理システム２を含む船舶では、互いに異なる複数種類（燃料油管理システム２では、２種類）の燃料油が合流経路Ｌ３を経て燃焼機関に対して供給される場合に、各燃料油が個別に流れる経路又はそれよりも前段において、燃料油の消費量を測定する燃料油消費量測定部が設けられる。燃料油管理システム２の場合には、第１燃料油経路Ｌ１又はその前段（すなわち、合流経路Ｌ３よりも前段）に第１燃料油消費量測定部１３が設けられ、第２燃料油経路Ｌ２又はその前段（すなわち、合流経路Ｌ３よりも前段）に第２燃料油消費量測定部１４が設けられる。したがって、燃料油の種類毎に、その消費量を精度良く測定することが可能となる。   In a ship including the fuel oil management system 2 described above, when a plurality of different types of fuel oil (two types in the fuel oil management system 2) are supplied to the combustion engine via the merge path L3, each fuel oil A fuel oil consumption measuring unit that measures the fuel oil consumption is provided in the path through which the fuel flows individually or in the preceding stage. In the case of the fuel oil management system 2, the first fuel oil consumption measuring unit 13 is provided in the first fuel oil path L1 or in the preceding stage (that is, in the preceding stage from the joining path L3), and the second fuel oil path L2 or A second fuel oil consumption measuring unit 14 is provided at the preceding stage (that is, before the merging path L3). Therefore, it is possible to accurately measure the consumption for each type of fuel oil.

近年、環境規制の一環としてＣＯ２排出量を把握するために燃費報告制度に関する欧州規則（ＥＵ−ＭＲＶ規則）が採択されたように、海運業界において燃料の種類毎にＣＯ２発生量が違うため燃料油の種類毎に消費量を精度よく測定することが求められている。しかしながら、従来の船舶では、自船での燃費管理等を目的として燃料油の消費量を測定することは行われていた。しかしながら、上記のＥＵ−ＭＲＶ規則のように燃料油の種類毎に消費量の管理を高い精度で行うことが法的に求められていなかったため、特に、複数種類の燃料油を燃焼機関で使用する場合に、種類毎の燃料油の消費量の測定を高い精度で行われておらず、種類毎に消費量の測定を行うための装置構成も設けられていなかった。 In recent years, as the European regulations on the fuel efficiency reporting system (EU-MRV regulations) have been adopted in order to understand CO 2 emissions as part of environmental regulations, the amount of CO 2 generated varies depending on the type of fuel in the shipping industry. It is required to accurately measure consumption for each type of fuel oil. However, in a conventional ship, the consumption of fuel oil has been measured for the purpose of managing fuel consumption on the ship itself. However, since it has not been legally required to manage the consumption amount with high accuracy for each type of fuel oil as in the EU-MRV rule, a plurality of types of fuel oil are used particularly in the combustion engine. In this case, the measurement of the amount of consumption of fuel oil for each type is not performed with high accuracy, and an apparatus configuration for measuring the amount of consumption for each type has not been provided.

これに対して、本実施形態に係る燃料油管理システム２を含む船舶１では、合流経路Ｌ３において各燃料油が合流するよりも前段で燃料油の消費量を測定することで、燃料油の消費量をその種類毎に個別に精度良く測定することを実現する。燃焼機関１５において燃料油を使用する場合、実際には互いに異なる燃料油の一方を燃焼機関１５へ供給する。したがって、合流経路Ｌ３において種類毎の燃料油の消費量を測定することも可能ではある。ただし、合流経路Ｌ３においては、燃料油の切り替え時等に複数種類の燃料油が混合される可能性もあるため、燃料油の種類毎に消費量を精度良く測定することが難しいと考えられる。これに対して、本実施形態に係る燃料油管理システム２を含む船舶１では、合流経路Ｌ３よりも前段に燃料油の消費量を測定する構成とすることで、混合された燃料油の消費量が測定されることを回避することができる。   On the other hand, in the ship 1 including the fuel oil management system 2 according to the present embodiment, the fuel oil consumption is measured by measuring the fuel oil consumption before the fuel oils merge in the merge path L3. It is possible to accurately measure the quantity individually for each type. When fuel oil is used in the combustion engine 15, one of the different fuel oils is actually supplied to the combustion engine 15. Therefore, it is also possible to measure the consumption amount of fuel oil for each type in the merging path L3. However, in the merging path L3, since there is a possibility that a plurality of types of fuel oil may be mixed when the fuel oil is switched, it is considered difficult to accurately measure the consumption for each type of fuel oil. On the other hand, in the ship 1 including the fuel oil management system 2 according to the present embodiment, the consumption amount of the mixed fuel oil is configured by measuring the consumption amount of the fuel oil before the merging path L3. Can be avoided.

また、第１燃料油消費量測定部１３又は第２燃料油消費量測定部１４として、燃料油経路に設けられた流量計を含む場合、燃焼機関１５へ供給される燃料油の流量を直接的に測定することもできるため、燃料油の消費量を精度良く測定することが可能となる。   When the first fuel oil consumption measuring unit 13 or the second fuel oil consumption measuring unit 14 includes a flow meter provided in the fuel oil path, the flow rate of the fuel oil supplied to the combustion engine 15 is directly determined. Therefore, it is possible to accurately measure the consumption amount of fuel oil.

一方、第１燃料油消費量測定部１３又は第２燃料油消費量測定部１４として、燃料油タンクに設けられた液面計を含む場合、燃料油タンクにおける燃料油の液面の変動から燃料油の消費量を測定することができると共に、燃料油経路側には新たな測定計等を設けることが不要となるため、経路の取り回し等を自由に行うことができる。ただし、液面計によるタンク内での燃料油の液面変動の測定に基づく燃料油の消費量の算出には誤差が含まれる場合がある。例えば、タンク底面積が大きい場合には、燃料油の僅かな消費は液面変動から正確に測定できない場合がある。したがって、タンク内での液面計を用いた燃料油の消費量の算出は、タンクの底面積がある程度小さい場合に好適に用いられる。   On the other hand, when the first fuel oil consumption measuring unit 13 or the second fuel oil consumption measuring unit 14 includes a liquid level gauge provided in the fuel oil tank, the fuel from the fluctuation of the level of the fuel oil in the fuel oil tank The oil consumption can be measured, and it is not necessary to provide a new measuring meter or the like on the fuel oil path side, so that the path can be routed freely. However, the calculation of the fuel oil consumption based on the measurement of the liquid level fluctuation of the fuel oil in the tank by the liquid level gauge may include an error. For example, when the tank bottom area is large, the slight consumption of fuel oil may not be accurately measured from the liquid level fluctuation. Therefore, the calculation of fuel oil consumption using a level gauge in the tank is preferably used when the bottom area of the tank is small to some extent.

（第２実施形態）
第１実施形態では、２種類の燃料油（第１燃料油及び第２燃料油）が、それぞれの燃料油タンクから１つの燃焼機関１５に対して供給される場合について説明した。しかしながら、実際には、燃料油を貯留するタンクと燃焼機関との間に清浄機（Purifier）等が設けられるため、その後段に清浄後の燃料油を貯留するためのタンク（中間タンク）が設けられる場合がある。また、船舶は、燃焼機関を複数有し、複数の燃焼機関に対して、同一の燃料油タンクから燃料油を供給することがある。第２実施形態では、２種類の燃料油を複数の燃焼機関に対して供給し、且つ、各燃料油の経路上に中間タンクが設けられる場合について説明する。 (Second Embodiment)
In the first embodiment, the case where two types of fuel oil (first fuel oil and second fuel oil) are supplied from one fuel oil tank to one combustion engine 15 has been described. However, in reality, a purifier or the like is provided between the tank for storing the fuel oil and the combustion engine, and therefore a tank (intermediate tank) for storing the cleaned fuel oil is provided at the subsequent stage. May be. Further, a ship may have a plurality of combustion engines and supply fuel oil from the same fuel oil tank to the plurality of combustion engines. In the second embodiment, a case where two types of fuel oil are supplied to a plurality of combustion engines and an intermediate tank is provided on each fuel oil path will be described.

図２は、第２実施形態に係る燃料油管理システム３を含む船舶１Ａについて説明する図である。図２では、第１燃料油に対応する燃料油がディーゼル油（Diesel Oil：Ｄ．Ｏ．）であり、第２燃料油に対応する燃料油が重質燃料油（Heavy Fuel Oil：ＨＦＯ）である場合について説明する。また、図２では、燃焼機関１５として、発電機１５Ａ（Ｇ／Ｅ）、主機１５Ｂ（Ｍ／Ｅ）、及び、ボイラ１５Ｃ（ＢＬＲ）の３つの燃焼機関が設けられている。以下、ディーゼル油をＤＯと記載し、重質燃料油をＨＦＯと記載する場合がある。   FIG. 2 is a diagram illustrating a ship 1A including a fuel oil management system 3 according to the second embodiment. In FIG. 2, the fuel oil corresponding to the first fuel oil is diesel oil (Diesel Oil: DO), and the fuel oil corresponding to the second fuel oil is heavy fuel oil (HFO). A case will be described. In FIG. 2, as the combustion engine 15, three combustion engines of a generator 15 </ b> A (G / E), a main engine 15 </ b> B (M / E), and a boiler 15 </ b> C (BLR) are provided. Hereinafter, diesel oil may be described as DO and heavy fuel oil may be described as HFO.

図２に示す船舶１Ａの燃料油管理システム３のうち、まず、ディーゼル油（ＤＯ）側の流路について説明する。まず、第１燃料油タンクに相当するタンクとして、ＤＯ貯留タンク１１Ａ（D.O. Storage Tank）が設けられる。このＤＯ貯留タンク１１ＡからのＤＯは、経路Ｌ１１を経て清浄機２１（Purif.）へ導入される。また、清浄機２１による清浄後のＤＯは、経路Ｌ１２を経て中間タンクであるＤＯサービスタンク２２（D.O. Service Tank）へ導入される。また、ＤＯサービスタンク２２からＤＯ貯留タンク１１Ａに対して、ＤＯサービスタンク２２においてＤＯがオーバーフローした場合の返送経路Ｌ１３が設けられる。このように、ＤＯ側では、ＤＯ貯留タンク１１Ａ、清浄機２１、及びＤＯサービスタンク２２を含む循環経路が形成される。   In the fuel oil management system 3 of the ship 1A shown in FIG. 2, first, the flow path on the diesel oil (DO) side will be described. First, a DO storage tank 11A (D.O. Storage Tank) is provided as a tank corresponding to the first fuel oil tank. The DO from the DO storage tank 11A is introduced into the purifier 21 (Purif.) Via the path L11. Further, the DO after the cleaning by the cleaner 21 is introduced into a DO service tank 22 (D.O. Service Tank) which is an intermediate tank through a path L12. Further, a return path L13 is provided from the DO service tank 22 to the DO storage tank 11A when the DO overflows in the DO service tank 22. Thus, on the DO side, a circulation path including the DO storage tank 11A, the purifier 21, and the DO service tank 22 is formed.

ＤＯサービスタンク２２から分岐した一部のＤＯが、発電機１５Ａ及び主機１５Ｂに対して燃料油を供給する合流経路Ｌ３１に対して経路Ｌ１４を経て供給される。また、経路Ｌ１１から分岐した一部のＤＯが、ボイラ１５Ｃに対して燃料油を供給する合流経路Ｌ３２に対して経路Ｌ１５を経て供給される。   A part of the DO branched from the DO service tank 22 is supplied via a path L14 to a merging path L31 that supplies fuel oil to the generator 15A and the main machine 15B. Further, a part of the DO branched from the path L11 is supplied via the path L15 to the joining path L32 for supplying the fuel oil to the boiler 15C.

上記のＤＯ側の経路のうち、経路Ｌ１１〜Ｌ１５がＤＯのみが流れる経路であり、第１燃料油経路に相当する。これらの経路のうち、ＤＯのみが流れて合流経路Ｌ３１に対して接続する経路が経路Ｌ１４となる。また、ＤＯのみが流れて合流経路Ｌ３２に対して接続する経路が経路Ｌ１５となる。したがって、図２に示すように、経路Ｌ１４及び経路Ｌ１５上に、それぞれ流量計１３１及び流量計１３２を設けることで、ＤＯ側の循環経路から分岐して燃焼機関１５（発電機１５Ａ、主機１５Ｂ、及び、ボイラ１５Ｃ）に接続する合流経路Ｌ３１，Ｌ３２に流れるＤＯの流量、すなわち、ＤＯの消費量を測定することができる。このように、流量計１３１，１３２がＤＯ（第１燃料油）側の燃料油消費量測定部（第１燃料油消費量測定部）として機能する。なお、ＤＯの消費量（重量）を算出するために、ＤＯの温度を測定するための温度計が別途設けられていても良い。   Among the routes on the DO side, routes L11 to L15 are routes through which only DO flows, and correspond to the first fuel oil route. Among these paths, only the DO flows and connects to the merging path L31 is the path L14. In addition, a route that only DO flows and connects to the merging route L32 is a route L15. Therefore, as shown in FIG. 2, by providing the flow meter 131 and the flow meter 132 on the path L14 and the path L15, respectively, the combustion engine 15 (the generator 15A, the main engine 15B, And the flow volume of DO which flows into the confluence | merging paths L31 and L32 connected to the boiler 15C), ie, the consumption of DO, can be measured. In this manner, the flow meters 131 and 132 function as a fuel oil consumption measuring unit (first fuel oil consumption measuring unit) on the DO (first fuel oil) side. In addition, in order to calculate the consumption (weight) of DO, the thermometer for measuring the temperature of DO may be provided separately.

ＤＯ側の経路に設けられる流量計１３１，１３２による測定の結果（及び、必要に応じて温度計による測定の結果）は、図２に示す演算・記録部４０に対して送られ、演算・記録部４０によりこれらの測定結果を取りまとめて、ＤＯの消費量を算出する構成とすることができる。この場合、演算・記録部４０もＤＯ（第１燃料油）側の燃料油消費量測定部（第１燃料油消費量測定部）として機能する。   The results of measurement by the flow meters 131 and 132 provided in the DO side path (and the result of measurement by the thermometer as necessary) are sent to the calculation / recording unit 40 shown in FIG. It can be set as the structure which puts together these measurement results by the part 40, and calculates consumption of DO. In this case, the calculation / recording unit 40 also functions as a fuel oil consumption measuring unit (first fuel oil consumption measuring unit) on the DO (first fuel oil) side.

次に、重質燃料油（ＨＦＯ）側の流路について説明する。まず、第２燃料油タンクに相当するタンクとして、ＨＦＯ貯留タンク１２Ａ（HFO Storage Tank）が設けられる。このＨＦＯ貯留タンク１２ＡからのＨＦＯは、経路Ｌ２１を経て中間タンクであるＨＦＯ静置タンク（HFO Settling Tank）３１へ導入される。また、ＨＦＯ静置タンク３１からのＨＦＯは、経路Ｌ２２を経て清浄機３２（Purif.）へ導入される。また、清浄機３２による清浄後のＨＦＯは、経路Ｌ２３を経て中間タンクであるＨＦＯサービスタンク３３（HFO Service Tank）へ導入される。また、ＨＦＯサービスタンク３３からＨＦＯ静置タンク３１に対して、ＨＦＯサービスタンク３３においてＨＦＯがオーバーフローした場合の返送経路Ｌ２４が設けられる。このように、ＨＦＯ側では、ＨＦＯ貯留タンク１２Ａよりも後段において、ＨＦＯ静置タンク３１、清浄機３２、及びＨＦＯサービスタンク３３を含む循環経路が形成される。   Next, the flow path on the heavy fuel oil (HFO) side will be described. First, an HFO storage tank 12A (HFO Storage Tank) is provided as a tank corresponding to the second fuel oil tank. The HFO from the HFO storage tank 12A is introduced into an HFO stationary tank (HFO Settling Tank) 31 that is an intermediate tank via a path L21. Moreover, HFO from the HFO stationary tank 31 is introduced into the cleaner 32 (Purif.) Via the path L22. Further, the HFO after being cleaned by the cleaner 32 is introduced into an HFO service tank 33 (HFO Service Tank) which is an intermediate tank via a path L23. Further, a return path L24 is provided when the HFO overflows in the HFO service tank 33 from the HFO service tank 33 to the HFO stationary tank 31. As described above, on the HFO side, a circulation path including the HFO stationary tank 31, the purifier 32, and the HFO service tank 33 is formed at a stage after the HFO storage tank 12A.

ＨＦＯサービスタンク３３から分岐した一部のＨＦＯが、発電機１５Ａ及び主機１５Ｂに対して燃料油を供給する合流経路Ｌ３１に対して経路Ｌ２５を経て供給される。また、ＨＦＯ静置タンク３１から分岐した一部のＨＦＯが、ボイラ１５Ｃに対して燃料油を供給する合流経路Ｌ３２に対して経路Ｌ２６を経て供給される。   A part of HFO branched from the HFO service tank 33 is supplied via a path L25 to a merging path L31 that supplies fuel oil to the generator 15A and the main machine 15B. Moreover, a part of HFO branched from the HFO stationary tank 31 is supplied via a path L26 to a merging path L32 for supplying fuel oil to the boiler 15C.

上記のＨＦＯ側の経路のうち、経路Ｌ２１〜Ｌ２６がＨＦＯのみが流れる経路であり、第２燃料油経路に相当する。これらの経路のうち、ＨＦＯのみが流れて合流経路Ｌ３１に対して接続する経路が経路Ｌ２５となる。また、ＨＦＯのみが流れて合流経路Ｌ３２に対して接続する経路が経路Ｌ２６となる。したがって、図２に示すように、経路Ｌ２５及び経路Ｌ２６上に、それぞれ流量計１４１及び流量計１４２を設けることで、ＨＦＯ側の循環経路から分岐して燃焼機関１５（発電機１５Ａ、主機１５Ｂ、及び、ボイラ１５Ｃ）に接続する合流経路Ｌ３１，Ｌ３２に流れるＨＦＯの流量、すなわち、ＨＦＯの消費量を測定することができる。このように、流量計１４１，１４２がＨＦＯ（第２燃料油）側の燃料油消費量測定部（第２燃料油消費量測定部）として機能する。なお、ＨＦＯの消費量（重量）を算出するために、ＨＦＯの温度を測定するための温度計が別途設けられていても良い。   Among the above-mentioned routes on the HFO side, the routes L21 to L26 are routes through which only HFO flows, and correspond to the second fuel oil route. Of these routes, only the HFO flows and connects to the merging route L31 is the route L25. In addition, a path that only flows through the HFO and connects to the merging path L32 is the path L26. Therefore, as shown in FIG. 2, by providing the flow meter 141 and the flow meter 142 on the path L25 and the path L26, respectively, the combustion engine 15 (the generator 15A, the main engine 15B, And the flow volume of HFO which flows into merge path L31, L32 connected to boiler 15C), ie, the consumption of HFO, can be measured. In this way, the flow meters 141 and 142 function as a fuel oil consumption measuring unit (second fuel oil consumption measuring unit) on the HFO (second fuel oil) side. In addition, in order to calculate the consumption (weight) of HFO, the thermometer for measuring the temperature of HFO may be provided separately.

ＨＦＯ側の経路に設けられる流量計１４１，１４２による測定の結果（及び、必要に応じて温度計による測定の結果）は、図２に示す演算・記録部４０に対して送られ、演算・記録部４０によりこれらの測定結果を取りまとめて、ＨＦＯの消費量を算出する構成とすることができる。この場合、演算・記録部４０もＨＦＯ（第２燃料油）側の燃料油消費量測定部（第２燃料油消費量測定部）として機能する。   The results of measurement by the flow meters 141 and 142 provided in the path on the HFO side (and the result of measurement by the thermometer if necessary) are sent to the calculation / recording unit 40 shown in FIG. The measurement results can be collected by the unit 40 and the consumption of HFO can be calculated. In this case, the calculation / recording unit 40 also functions as a fuel oil consumption measuring unit (second fuel oil consumption measuring unit) on the HFO (second fuel oil) side.

また、２０１，２０２，２０３はポンプであり、それぞれ燃料油の供給のために作動する。   Reference numerals 201, 202, and 203 denote pumps that operate to supply fuel oil.

図２に示す例では、ＤＯ及びＨＦＯのいずれにおいても、合流経路Ｌ３１，Ｌ３２に対して接続する経路上に流量計を設けて、この流量計を利用して、燃料油の消費量を測定している。このように、燃料油の消費量を測定するための燃料油消費量測定部として流量計を用いた構成とすることで、ＤＯ及びＨＦＯそれぞれの消費量を精度良く測定することができる。   In the example shown in FIG. 2, in both DO and HFO, a flow meter is provided on the path connected to the merge paths L31 and L32, and the fuel oil consumption is measured using this flow meter. ing. As described above, by using the flow meter as the fuel oil consumption measuring unit for measuring the fuel oil consumption, the respective consumption amounts of DO and HFO can be measured with high accuracy.

（第３実施形態）
図３は、第３実施形態に係る燃料油管理システム４を含む船舶１Ｂについて説明する図である。燃料油管理システム４は、第２実施形態に係る燃料油管理システム３と比較して、ＨＦＯ側の燃料油消費量測定部の構成が異なるが、その他の構成は燃料油管理システム３と同じである。したがって、構成が同じ部分については説明を省略し、相違点についてのみ説明する。 (Third embodiment)
FIG. 3 is a diagram illustrating a ship 1B including the fuel oil management system 4 according to the third embodiment. The fuel oil management system 4 differs from the fuel oil management system 3 according to the second embodiment in the configuration of the fuel oil consumption measuring unit on the HFO side, but the other configurations are the same as the fuel oil management system 3 is there. Therefore, the description of the parts having the same configuration is omitted, and only the differences are described.

重質燃料油（ＨＦＯ）側の流路についても、燃料油管理システム３と同じである。すなわち、ＨＦＯ側では、ＨＦＯ貯留タンク１２Ａよりも後段において、ＨＦＯ静置タンク３１、清浄機３２、及びＨＦＯサービスタンク３３を含む循環経路が形成される。また、ＨＦＯサービスタンク３３から分岐した一部のＨＦＯが、発電機１５Ａ及び主機１５Ｂに対して燃料油を供給する合流経路Ｌ３１に対して経路Ｌ２５を経て供給される。また、ＨＦＯ静置タンク３１から分岐した一部のＨＦＯが、ボイラ１５Ｃに対して燃料油を供給する合流経路Ｌ３２に対して経路Ｌ２６を経て供給される。   The flow path on the heavy fuel oil (HFO) side is the same as that of the fuel oil management system 3. That is, on the HFO side, a circulation path including the HFO stationary tank 31, the purifier 32, and the HFO service tank 33 is formed at a later stage than the HFO storage tank 12 </ b> A. A part of HFO branched from the HFO service tank 33 is supplied via a path L25 to a merging path L31 that supplies fuel oil to the generator 15A and the main machine 15B. Moreover, a part of HFO branched from the HFO stationary tank 31 is supplied via a path L26 to a merging path L32 for supplying fuel oil to the boiler 15C.

ここで、第３実施形態に係る燃料油管理システム４では、流量計と液面計とを組み合わせてＨＦＯの消費量を測定する。まず、経路Ｌ２１上に流量計を設けることで、ＨＦＯ貯留タンク１２Ａから排出されるＨＦＯの量を測定する。一方、ＨＦＯ貯留タンク１２Ａの後段の中間タンクであるＨＦＯ静置タンク３１及びＨＦＯサービスタンク３３については、それぞれ液面計１４４，１４５を設けることで、液面の高さを利用して各タンクに貯留されるＨＦＯの量を測定する。これらの結果から、ＨＦＯ貯留タンク１２Ａから排出されるＨＦＯの量から、ＨＦＯ静置タンク３１及びＨＦＯサービスタンク３３に貯留されるＨＦＯの増加量を差し引いた量が、燃焼機関である発電機１５Ａ、主機１５Ｂ及びボイラ１５ＣにおけるＨＦＯの消費量になる。この測定結果に基づくＨＦＯの消費量の算出は、第２実施形態と同様に演算・記録部４０で行う構成とすることができる。   Here, the fuel oil management system 4 according to the third embodiment measures the consumption of HFO by combining a flow meter and a liquid level meter. First, the amount of HFO discharged from the HFO storage tank 12A is measured by providing a flow meter on the path L21. On the other hand, the HFO stationary tank 31 and the HFO service tank 33, which are intermediate tanks subsequent to the HFO storage tank 12A, are provided with liquid level gauges 144 and 145, respectively. Measure the amount of HFO stored. From these results, the amount obtained by subtracting the increase in HFO stored in the HFO stationary tank 31 and the HFO service tank 33 from the amount of HFO discharged from the HFO storage tank 12A is the generator 15A, which is a combustion engine. It becomes the consumption of HFO in the main machine 15B and the boiler 15C. The calculation of the consumption of HFO based on the measurement result can be performed by the calculation / recording unit 40 as in the second embodiment.

このように、流量計１４３と、液面計１４４，１４５を組み合わせて、燃料油の消費量を測定する構成としてもよい。この場合、流量計１４３は、ＨＦＯ貯留タンク（燃料油タンク）からの燃料油の排出量を測定する流量計として機能することになる。また、液面計１４４，１４５は、中間タンクでの燃料油の貯留量を測定する貯留量測定部として機能することになる。なお、上述のように液面計のみでは体積しか測定できないため、液面計と温度センサ（温度測定部）または密度センサ（密度測定部）とを組み合わせて設けられる。   Thus, it is good also as a structure which measures the consumption of fuel oil combining the flowmeter 143 and the liquid level gauges 144,145. In this case, the flow meter 143 functions as a flow meter that measures the amount of fuel oil discharged from the HFO storage tank (fuel oil tank). In addition, the liquid level gauges 144 and 145 function as a storage amount measuring unit that measures the storage amount of the fuel oil in the intermediate tank. Since only the liquid level meter can measure only the volume as described above, the liquid level meter and a temperature sensor (temperature measuring unit) or a density sensor (density measuring unit) are provided in combination.

第３実施形態に係る燃料油管理システム４では、第２実施形態に係る燃料油管理システム３と比較して以下の効果が得られる。まず、第２実施形態に係る燃料油管理システム３では、流量計１４１がポンプ２０２よりも上流側に設けられている。この場合、流量計の配置によっては流量計の圧力損失がポンプ２０２の吸込性能を満足しない場合がある。そのため、システム全体としての動作が困難となる場合がある。これに対して、第３実施形態に係る燃料油管理システム４では、ポンプ２０２とＨＦＯサービスタンク３３との間に流量計を配置する必要がなくなるため、上記のような問題を回避することができる。また、第３実施形態に係る燃料油管理システム４では、第２実施形態に係る燃料油管理システム３と比較して、流量計を１つ減らすことができ、流量計の設置及び管理に係るコストを減らすことができる。   In the fuel oil management system 4 according to the third embodiment, the following effects can be obtained as compared with the fuel oil management system 3 according to the second embodiment. First, in the fuel oil management system 3 according to the second embodiment, the flow meter 141 is provided on the upstream side of the pump 202. In this case, depending on the arrangement of the flow meter, the pressure loss of the flow meter may not satisfy the suction performance of the pump 202. Therefore, the operation of the entire system may be difficult. On the other hand, in the fuel oil management system 4 according to the third embodiment, since it is not necessary to arrange a flow meter between the pump 202 and the HFO service tank 33, the above problems can be avoided. . Further, in the fuel oil management system 4 according to the third embodiment, the flow meter can be reduced by one as compared with the fuel oil management system 3 according to the second embodiment, and the cost associated with the installation and management of the flow meter. Can be reduced.

なお、第３実施形態では、ＨＦＯ静置タンク３１及びＨＦＯサービスタンク３３については液面計１４４，１４５でタンク内のＨＦＯの貯留量（体積）を測定しているが、ＨＦＯ貯留タンク１２Ａについては、流量計１４３を用いてタンクから排出されるＨＦＯの量を測定している。この構成に代えて、ＨＦＯ貯留タンク１２Ａについても、液面計を用いてタンクから排出されるＨＦＯの量を測定する構成としてもよい。ただし、上述のように、タンクの容量が大きい場合には、液面計による体積の測定には誤差が含まれる可能性がある。したがって、タンクの容量等に基づいて、液面計及び流量計の何れを用いるかを選択することで、消費量の測定をより高い精度で行うことが可能となる。第３実施形態で示す構成では、ＨＦＯ貯留タンク１２Ａに対して、ＨＦＯ静置タンク３１及びＨＦＯサービスタンク３３は容量が比較的小さくなる場合が多いため、上記で説明したようにＨＦＯ静置タンク３１及びＨＦＯサービスタンク３３について液面計を用いてタンク内のＨＦＯの量を測定する構成としても、測定精度を十分高く保つことができると考えられる。   In the third embodiment, the HFO storage tank 31 and the HFO service tank 33 measure the storage amount (volume) of HFO in the tank with the liquid level gauges 144 and 145, but the HFO storage tank 12A. The amount of HFO discharged from the tank is measured using a flow meter 143. Instead of this configuration, the HFO storage tank 12A may be configured to measure the amount of HFO discharged from the tank using a liquid level gauge. However, as described above, when the capacity of the tank is large, an error may be included in the measurement of the volume by the liquid level gauge. Therefore, by selecting which one of the liquid level meter and the flow meter is used based on the capacity of the tank or the like, the consumption can be measured with higher accuracy. In the configuration shown in the third embodiment, the capacity of the HFO stationary tank 31 and the HFO service tank 33 is often relatively small with respect to the HFO storage tank 12A. Therefore, as described above, the HFO stationary tank 31 In addition, even if the HFO service tank 33 is configured to measure the amount of HFO in the tank using a liquid level gauge, it is considered that the measurement accuracy can be kept sufficiently high.

なお、第３実施形態では、第２燃料油側となるＨＦＯ側において、中間タンクでの燃料油の貯留量を測定する場合について説明したが、当然ながら第１燃料油側、すなわち、ＤＯ側において同様の構成を採用してもよい。また、両方の燃料油側において中間タンクでの燃料油の貯留量を測定する構成としてもよい。ただし、図２及び図３に示す例では、ＤＯ貯留タンク１１Ａに対してオーバーフローしたＤＯを返送する返送経路Ｌ１３が設けられている。このような構成の場合、流量計１４３のように、ＤＯ貯留タンク１１Ａからの経路Ｌ１１上に流量計を設けるだけでは、ＤＯ貯留タンク１１Ａから排出されるＤＯを正確に測定することができない。そのため、流量計等の配置を適宜変更する必要がある。その点について、次の変形例で説明する。   In the third embodiment, the case where the amount of fuel oil stored in the intermediate tank is measured on the HFO side, which is the second fuel oil side, has been described. Naturally, on the first fuel oil side, that is, the DO side. A similar configuration may be adopted. Further, the fuel oil storage amount in the intermediate tank may be measured on both fuel oil sides. However, in the example shown in FIGS. 2 and 3, a return path L13 for returning the overflowed DO to the DO storage tank 11A is provided. In the case of such a configuration, the DO discharged from the DO storage tank 11A cannot be accurately measured only by providing a flow meter on the path L11 from the DO storage tank 11A as in the flow meter 143. Therefore, it is necessary to appropriately change the arrangement of the flow meter and the like. This will be described in the following modification.

（変形例）
図４は、第３実施形態に係る燃料油管理システム４の変形例として、燃料油管理システム４におけるＨＦＯ側の経路を一部変更した例を示した図である。図４では、図３に示した燃料油管理システム３におけるＨＦＯの経路と比較して、中間タンクが１つ追加されていると共に、そのタンクと他のタンク等の間に経路が追加されている。また、この経路の変更に対応して、ＨＦＯ側の燃料油消費量測定部の構成が異なっている。 (Modification)
FIG. 4 is a diagram showing an example in which a route on the HFO side in the fuel oil management system 4 is partially changed as a modification of the fuel oil management system 4 according to the third embodiment. In FIG. 4, compared with the HFO path in the fuel oil management system 3 shown in FIG. 3, one intermediate tank is added and a path is added between the tank and other tanks. . Further, the configuration of the fuel oil consumption measuring unit on the HFO side is different corresponding to the change of the route.

図４に示す変形例では、燃料油管理システム４と同様に、ＨＦＯ貯留タンク１２Ａよりも後段において、ＨＦＯ静置タンク３１、清浄機３２、及びＨＦＯサービスタンク３３を含む循環経路が形成される（清浄機３２は、図４では記載を省略している）。また、ＨＦＯサービスタンク３３から分岐した一部のＨＦＯが、発電機１５Ａ及び主機１５Ｂに対して燃料油を供給する合流経路Ｌ３１に対して経路Ｌ２５を経て供給される。また、ＨＦＯ静置タンク３１から分岐した一部のＨＦＯが、ボイラ１５Ｃに対して燃料油を供給する合流経路Ｌ３２に対して経路Ｌ２６を経て供給される。   In the modified example shown in FIG. 4, similarly to the fuel oil management system 4, a circulation path including the HFO stationary tank 31, the purifier 32, and the HFO service tank 33 is formed at a later stage than the HFO storage tank 12 </ b> A ( The description of the cleaner 32 is omitted in FIG. 4). A part of HFO branched from the HFO service tank 33 is supplied via a path L25 to a merging path L31 that supplies fuel oil to the generator 15A and the main machine 15B. Moreover, a part of HFO branched from the HFO stationary tank 31 is supplied via a path L26 to a merging path L32 for supplying fuel oil to the boiler 15C.

一方、図４に示す変形例においては、ＨＦＯ静置タンク３１がオーバーフローした場合に、ＨＦＯ静置タンク３１及びＨＦＯサービスタンク３３から一部のＨＦＯを導入するサブタンク３４が設けられている。ＨＦＯ静置タンク３１及びＨＦＯサービスタンク３３とサブタンク３４との間には、経路Ｌ２７が設けられる。また、サブタンク３４のＨＦＯは、経路Ｌ２８を経てＨＦＯ貯留タンク１２Ａ、又は、経路Ｌ２１上であって且つ流量計１４３よりも前段に返送される（図４では、経路Ｌ２１に返送する例を示している）。   On the other hand, in the modification shown in FIG. 4, there is provided a sub-tank 34 for introducing a part of HFO from the HFO stationary tank 31 and the HFO service tank 33 when the HFO stationary tank 31 overflows. A path L27 is provided between the HFO stationary tank 31, the HFO service tank 33, and the sub tank. Further, the HFO of the sub tank 34 is returned to the HFO storage tank 12A or the path L21 through the path L28 and before the flow meter 143 (FIG. 4 shows an example of returning to the path L21. )

このような構成とした場合、図３に示す構成と比較すると、中間タンクとしてのサブタンク３４が増えている。そのため、液面計１４６を設けることで、液面の高さを利用して、サブタンク３４に貯留されるＨＦＯの量（体積）を測定することで、サブタンク３４に貯留されるＨＦＯを考慮してＨＦＯの消費量を算出することができる。   In the case of such a configuration, the number of sub tanks 34 as intermediate tanks is increased as compared with the configuration shown in FIG. Therefore, by providing the liquid level gauge 146, the amount (volume) of HFO stored in the sub tank 34 is measured using the height of the liquid level, and the HFO stored in the sub tank 34 is taken into consideration. The consumption of HFO can be calculated.

一方、流量計１４３では、ＨＦＯ貯留タンク１２Ａから排出されるＨＦＯの量が測定されるが、この測定結果には、サブタンク３４を経て返送されたＨＦＯの量が含まれる。したがって、流量計１４３による測定結果と、液面計１４４，１４５，１４６で測定される中間タンクに貯留されるＨＦＯの量と、からＨＦＯの消費量を算出した場合、サブタンク３４を経て返送されたＨＦＯの量の分だけ誤差が含まれることになる。   On the other hand, the flow meter 143 measures the amount of HFO discharged from the HFO storage tank 12 </ b> A, and this measurement result includes the amount of HFO returned through the sub tank 34. Therefore, when the HFO consumption was calculated from the measurement result by the flow meter 143 and the amount of HFO stored in the intermediate tank measured by the liquid level gauges 144, 145, 146, it was returned via the sub tank 34. An error corresponding to the amount of HFO is included.

そこで、図４に示す変形例の構成では、サブタンク３４から流量計１４３の前段に返送されるＨＦＯの量を測定するための流量計１４７を経路Ｌ２８上に設ける。そして、流量計１４３による測定結果から流量計１４７による測定結果を差し引くことで、ＨＦＯ貯留タンク１２Ａに当初から貯留されていたＨＦＯのうち、後段に排出されたＨＦＯの量を求めることができる。したがって、この流量計１４３による測定結果から流量計１４７による測定結果を差し引いた結果から、液面計１４４，１４５，１４６で測定される中間タンクに貯留されるＨＦＯの増加量を差し引くと、燃焼機関である発電機１５Ａ、主機１５Ｂ及びボイラ１５ＣにおけるＨＦＯの消費量が得られる。   Therefore, in the configuration of the modified example shown in FIG. 4, a flow meter 147 for measuring the amount of HFO returned from the sub tank 34 to the front stage of the flow meter 143 is provided on the path L28. Then, by subtracting the measurement result by the flow meter 147 from the measurement result by the flow meter 143, the amount of HFO discharged to the subsequent stage out of the HFO stored from the beginning in the HFO storage tank 12A can be obtained. Therefore, if the increase amount of HFO stored in the intermediate tank measured by the liquid level gauges 144, 145, 146 is subtracted from the result of subtracting the measurement result of the flow meter 147 from the measurement result of the flow meter 143, the combustion engine HFO consumption in the generator 15A, the main engine 15B, and the boiler 15C is obtained.

なお、サブタンク３４からのＨＦＯが流量計１４３よりも後段の経路Ｌ２１等に返送される場合には、流量計１４７による測定結果を用いなくてもよくなるので、流量計１４７を省略することができる。   In addition, when the HFO from the sub tank 34 is returned to the path L21 and the like subsequent to the flow meter 143, the measurement result by the flow meter 147 does not need to be used, so the flow meter 147 can be omitted.

このように、燃料油を貯留するタンク（ここでは、ＨＦＯ貯留タンク１２Ａ）と燃焼機関との間に中間タンクが設けられる場合や、貯留タンクと燃焼機関との間の経路が複雑になる場合には、経路の設定に応じて、流量計の設置場所を変更することで、燃料油の消費量を正確に測定することが可能となる。   As described above, when an intermediate tank is provided between the fuel oil storage tank (here, the HFO storage tank 12A) and the combustion engine, or when the path between the storage tank and the combustion engine is complicated. The fuel oil consumption can be accurately measured by changing the installation location of the flowmeter according to the route setting.

以上、本発明に係る実施形態について説明したが、本発明は上記実施形態に限られない。例えば、上記実施形態では、互いに異なる２種類の燃料油を、合流経路を介して燃焼機関に供給する構成について説明したが、燃焼機関に供給する燃料油の種類は３種類以上であってもよい。その場合でも、２種類以上の燃料油が合流する合流経路よりも前段において、燃料油の種類毎に燃料油消費量測定部を設けることで、各燃料油に関して消費量を精度良く測定することが可能となる。   As mentioned above, although embodiment which concerns on this invention was described, this invention is not limited to the said embodiment. For example, in the above-described embodiment, a configuration has been described in which two different types of fuel oil are supplied to the combustion engine via the merge path, but the number of types of fuel oil supplied to the combustion engine may be three or more. . Even in such a case, by providing a fuel oil consumption measuring unit for each type of fuel oil before the joining path where two or more types of fuel oil join, it is possible to accurately measure the consumption of each fuel oil. It becomes possible.

１，１Ａ，１Ｂ…船舶、２，３，４…燃料油管理システム、１１…第１燃料油タンク、１２…第２燃料油タンク、１３…第１燃料油消費量測定部、１４…第２燃料油消費量測定部、１５…燃焼機関。   DESCRIPTION OF SYMBOLS 1,1A, 1B ... Ship, 2, 3, 4 ... Fuel oil management system, 11 ... 1st fuel oil tank, 12 ... 2nd fuel oil tank, 13 ... 1st fuel oil consumption measuring part, 14 ... 2nd Fuel oil consumption measuring unit, 15 ... combustion engine.

Claims (6)

第１燃料油を貯留する第１燃料油タンクと、
前記第１燃料油とは異なる第２燃料油を貯留する第２燃料油タンクと、
前記第１燃料油タンクから前記第１燃料油を排出する第１燃料油経路と、
前記第２燃料油タンクから前記第２燃料油を排出する第２燃料油経路と、
前記第１燃料油経路及び前記第２燃料油経路の後段に設けられて、前記第１燃料油経路及び前記第２燃料油経路からの燃料油を合流させる合流経路と、
前記合流経路からの燃料油を導入して燃焼させる燃焼機関と、
前記合流経路よりも前段において、前記第１燃料油の消費量を測定する第１燃料油消費量測定部と、
前記合流経路よりも前段において、前記第２燃料油の消費量を測定する第２燃料油消費量測定部と、
を有する、船舶。 A first fuel oil tank for storing the first fuel oil;
A second fuel oil tank for storing a second fuel oil different from the first fuel oil;
A first fuel oil path for discharging the first fuel oil from the first fuel oil tank;
A second fuel oil path for discharging the second fuel oil from the second fuel oil tank;
A merging path that is provided downstream of the first fuel oil path and the second fuel oil path and joins the fuel oil from the first fuel oil path and the second fuel oil path;
A combustion engine that introduces and burns fuel oil from the merging path;
A first fuel oil consumption measuring unit that measures the consumption of the first fuel oil in a stage prior to the merging path;
A second fuel oil consumption measuring unit that measures the consumption of the second fuel oil before the merging path;
Having a ship. 前記第１燃料油消費量測定部及び前記第２燃料油消費量測定部の一方は、前記合流経路よりも前段の経路上に設けられた、前記合流経路へ流れる燃料油の量を測定する流量計である、請求項１に記載の船舶。   One of the first fuel oil consumption measuring unit and the second fuel oil consumption measuring unit is provided on a path preceding the merging path and measures the amount of fuel oil flowing to the merging path. The ship according to claim 1, which is a total. 前記第１燃料油経路上に、前記第１燃料油を貯留する中間タンクをさらに有し、
前記第１燃料油消費量測定部は、前記第１燃料油タンクからの前記第１燃料油の排出量を測定する流量計と、前記中間タンクでの前記第１燃料油の貯留量を測定する貯留量測定部と、を有する、請求項１に記載の船舶。 An intermediate tank for storing the first fuel oil on the first fuel oil path;
The first fuel oil consumption measuring unit measures a flow meter that measures the discharge amount of the first fuel oil from the first fuel oil tank and a storage amount of the first fuel oil in the intermediate tank. The ship according to claim 1, further comprising a storage amount measuring unit. 前記流量計は、質量流量計である、請求項２または３に記載の船舶。   The ship according to claim 2 or 3, wherein the flow meter is a mass flow meter. 前記流量計は、体積流量計と、温度または密度測定部とである、請求項２または３に記載の船舶。   The ship according to claim 2 or 3, wherein the flow meter is a volume flow meter and a temperature or density measuring unit. 前記貯留量測定部は、前記中間タンク内での前記第１燃料油の液面を測定する液面計と、温度または密度測定部を含む、請求項３に記載の船舶。   The ship according to claim 3, wherein the storage amount measurement unit includes a liquid level gauge that measures a liquid level of the first fuel oil in the intermediate tank, and a temperature or density measurement unit.
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