WO2009052664A1 - Dispositif d'alimentation d'huile à support de combustion haute efficacité pour huile diesel émulsifiée - Google Patents

Dispositif d'alimentation d'huile à support de combustion haute efficacité pour huile diesel émulsifiée Download PDF

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Publication number
WO2009052664A1
WO2009052664A1 PCT/CN2007/003133 CN2007003133W WO2009052664A1 WO 2009052664 A1 WO2009052664 A1 WO 2009052664A1 CN 2007003133 W CN2007003133 W CN 2007003133W WO 2009052664 A1 WO2009052664 A1 WO 2009052664A1
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Prior art keywords
oil
emulsified
diesel
energy
heating device
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PCT/CN2007/003133
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English (en)
French (fr)
Inventor
Bihua Zhou
Original Assignee
Bihua Zhou
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Publication of WO2009052664A1 publication Critical patent/WO2009052664A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K5/00—Feeding or distributing other fuel to combustion apparatus
    • F23K5/02—Liquid fuel
    • F23K5/08—Preparation of fuel
    • F23K5/10—Mixing with other fluids
    • F23K5/12—Preparing emulsions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M31/00—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture
    • F02M31/02—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating
    • F02M31/16—Other apparatus for heating fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0047—Layout or arrangement of systems for feeding fuel
    • F02M37/0064—Layout or arrangement of systems for feeding fuel for engines being fed with multiple fuels or fuels having special properties, e.g. bio-fuels; varying the fuel composition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/95—Fuel injection apparatus operating on particular fuels, e.g. biodiesel, ethanol, mixed fuels
    • 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
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • the present invention relates to an oil supply device for a diesel engine using an emulsified diesel oil such as emulsified water diesel or an alcohol-type emulsified water diesel oil as a fuel and capable of effectively improving fuel efficiency, and belongs to the field of internal combustion engines.
  • an emulsified diesel oil such as emulsified water diesel or an alcohol-type emulsified water diesel oil as a fuel and capable of effectively improving fuel efficiency
  • Emulsified diesel fuel is a kind of mixed fuel which is mixed with pure water and a certain proportion of water or water and alcohol and special emulsifier. It has large power, low cost and can meet the requirements of oil-fired boilers and ships.
  • the oil demand of a large displacement diesel engine with a worm-flow combustor is an energy-saving fuel that can save diesel fuel.
  • emulsified diesel fuel is a kind of fuel, its use requires a suitable temperature. If the temperature is too high or too low, it will affect its use effect, and the fuel utilization will not be sufficient, which will cause waste of fuel resources to a certain extent.
  • the direct-injection diesel engine which has been widely used at present, because it directly injects low-temperature fuel with the same ambient temperature into the cylinder, it seriously affects the use effect of the emulsified fuel. This is also to promote the emulsified diesel to small-displacement diesel engines such as automobiles. The main obstacles to use.
  • the object of the present invention is to overcome the deficiencies of the above-mentioned existing emulsified diesel oil which is not easy to be fully burned, and to design a structure which can preheat the emulsified diesel oil delivered to the diesel oil pump to an optimum temperature for facilitating atomization, and has a reasonable structure and convenient use.
  • the high-efficiency combustion-supporting oil supply device of the emulsified diesel oil of the invention mainly comprises an ordinary emulsified diesel oil supply comprising an emulsified diesel fuel tank, a diesel fuel tank, a normally open electromagnetic valve and a normally closed electromagnetic valve.
  • an emulsification pump and an energy-saving heating device are added.
  • the inlet and outlet ports of the emulsification pump are respectively connected with the lower part and the upper part of the emulsified diesel tank, and the inlet port of the normally open electromagnetic valve is connected with the emulsified diesel tank, and normally closed.
  • the oil inlet of the solenoid valve is connected with the diesel tank, and the oil outlets of the normally open solenoid valve and the normally closed solenoid valve are connected to each other and connected to the oil inlet of the energy-saving heating device, and the oil outlet of the energy-saving heating device is connected with the diesel oil pump.
  • the normally open solenoid valve and the normally closed solenoid valve are two linked synchronous solenoid valves.
  • the heating temperature of the energy-saving heating device is 70-75 ° C, and the structure thereof includes a condensed water heat exchanger and a constant temperature auxiliary.
  • the condensate heat exchanger comprises a casing provided with inlet and outlet ports and a heat exchange tube installed in the casing
  • the thermostatic auxiliary heater comprises a casing and an electric heating pipe, a spiral pipe, a heat transfer oil and a temperature sensor
  • the heat exchange tube of the condensate heat exchanger is connected in series with the spiral tube of the constant temperature auxiliary heater
  • the other port of the heat exchanger tube of the condensate heat exchanger is an oil inlet of the energy-saving heating device
  • the constant temperature auxiliary heater The other port of the spiral tube is the oil outlet of the energy-saving heating device.
  • the casing of the condensate water heater and the casing of the thermostatic auxiliary heater are wrapped with an insulating layer.
  • the high-efficiency combustion-supporting oil supply device of the emulsified diesel fuel of the present invention can be emulsified before the next use of the diesel engine when the engine is stopped for a long time and the unused emulsified diesel oil is left in the fuel tank due to the addition of the emulsification pump.
  • the pump mixes the residual oil or residual oil in the emulsified diesel tank with the added new oil for a few minutes, so that the residual oil or residual oil in the emulsified diesel tank can be re-emulsified together with the added new oil to restore the average
  • the quality is stable, and the partial separation phenomenon due to long-term stoppage is effectively solved.
  • Figure 1 is a schematic view showing the structure of the present invention
  • 1 is a diesel tank
  • 2 is an emulsification pump
  • 3 is an emulsified diesel tank
  • 4 is a normally open solenoid valve
  • 5 is a normally closed solenoid valve
  • 6 is a condensate heat exchanger
  • 7 is a constant temperature assist Heater
  • 7 is a diesel oil pump.
  • the normally open solenoid valve 4 and the normally closed solenoid valve 5 are two linked synchronous solenoid valves.
  • the emulsification pump 2 may be selected from the diesel emulsification pump of the CN2608722Y patent, or may be directly placed in an emulsified diesel tank for emulsification.
  • the inlet and outlet 6-2 and 6-5 of the condensate heat exchanger 6 are respectively connected with the condensate outlet of the diesel engine and the inlet of the condenser, and the oil outlet 7-3 of the energy-saving heating device and the diesel engine
  • the output pump is connected, and the diesel engine output pump supplies oil to the diesel engine.
  • the device is controlled by an automatic control circuit.
  • the emulsification pump 2 can be installed in the fuel tank or outside the fuel tank depending on the size and shape of the fuel tank 3.
  • the automatic control circuit can be set for a length of time based on the characteristics of the emulsified fuel. If the diesel engine stop working time exceeds this length of time, the emulsification pump 2 starts the emulsification mixing operation at the same time when the diesel engine is started, and stops automatically after the completion of the stirring procedure; otherwise, it does not work. This reduces the amount of emulsification pump while ensuring the quality of the emulsified diesel, so that the emulsification pump does not need to be operated every time it is started.
  • the synchronous electromagnetic valve can be used to conveniently switch the oil circuit to pure diesel before the diesel engine is shut down. Oil, after the diesel engine starts running smoothly, switch the oil circuit to use emulsified diesel oil. To ensure that the diesel engine works normally and steadily.
  • the synchronous solenoid valve is in the power-off state, that is, the normally open electromagnetic wide 4 is opened and the normally closed electromagnetic valve 5 is closed, and the constant temperature auxiliary heater is normally operated.
  • the synchronous solenoid valve When the oil circuit is switched to the oil supply with pure diesel before the diesel engine is stopped, the synchronous solenoid valve is in the energized open state, that is, the normally open electromagnetic valve 4 is closed and the normally closed electromagnetic valve 5 is opened, and the constant temperature auxiliary heater is inoperatively powered off. In the state, the temperature of pure diesel oil will not be too high, and the emulsified diesel oil in the oil circuit can be replaced with pure diesel oil to facilitate the next start. It is a high-efficiency combustion-supporting oil supply device with reasonable structure, convenient use, stable emulsification performance and low power consumption.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Feeding And Controlling Fuel (AREA)

Description

乳化柴油的高效助燃供油装置
技术领域
本发明涉及一种柴油机使用乳化柴油如乳化水柴油或醇型乳化 水柴油等作燃料并能有效提高其燃油效率的供油装置，属于内燃机领 域。
背景技术
乳化柴油是一种在纯柴油中加入一定比例的水或水和醇等与专 用的乳化剂经充分搅拌混合而成的混合燃料，具有较大的功率，廉价 的成本、能够满足燃油锅炉和轮船等大排量的设有蜗流式燃烧室的柴 油机的用油需要，是一种能节约柴油的节能燃料，但是在使用过程中 我们发现了一些问题，例如：用乳化柴油直接进行冷机启动的效果差， 又由于乳化柴油的高黏度性质，如果长时间停止不用就容易出现部分 分离，这种情况下启动发动机，不仅会使部分柴油得不到充分的燃烧， 效率下降， 影响使用效果， 而且还容易产生有害气体， 造成一定程度 的环境污染。此外， 由于乳化柴油是一种燃料， 它的使用需要适宜的 温度，温度过高或过低都会影响其使用效果，也会造成燃油的利用不 够充分，在一定程度上造成了燃油资源的浪费。对目前已大量使用的 直喷式柴油机， 因其直接将与环境温度相同的低温燃油喷入气缸，严 重影响了乳化燃油的使用效果，这也是将乳化柴油推广到汽车等小排 量柴油机作燃油使用的主要障碍。
发明内容
本发明的目的是为了克服上述现有乳化柴油不易充分燃烧的不 足之处，设计一种能将输送到柴油机输油泵的乳化柴油预先加热到便 于雾化的最佳温度的结构合理、使用方便、乳化性能稳定和低耗电量 的乳化柴油的高效助燃供油装置。
本发明的乳化柴油的高效助燃供油装置，主要是在包括由乳化柴 油箱、柴油箱、常开电磁阀和常闭电磁阀组成的普通乳化柴油供油装 置的基础上， 增设乳化泵和节能加热装置， 所述乳化泵的进、 出油口 分别与乳化柴油箱的下部和上部连通，常开电磁阀的进油口与乳化柴 油箱连接，常闭电磁阀的进油口与柴油箱连接，常开电磁阀和常闭电 磁阀的出油口相互连接后与节能加热装置的进油口连接，节能加热装 置的出油口与柴油机输油泵连接。
为了确保换油时能连续供油，所述常开电磁阀和常闭电磁阀为两 个联动的同步电磁阀。
为了使加热后的乳化柴油达到在保持乳化油既不分离又便于雾 化的最佳状态， 所述节能加热装置的加热温度为 70- 75°C， 其结构包 括冷凝水换热器和恒温辅助加热器，其中，冷凝水换热器包括设有进、 出水口的壳体和装在壳体内的换热管，恒温辅助加热器包括壳体和装 在壳体内的电热管、螺旋管、 导热油和温度传感器， 所述冷凝水换热 器的换热管与恒温辅助加热器的螺旋管串联连接，冷凝水换热器换热 管的另一端口为节能加热装置的进油口，恒温辅助加热器螺旋管的另 一端口为节能加热装置的出油口。为了提高恒温效果，所述冷凝水换 热器的壳体和恒温辅助加热器的壳体外包裹有保温层。
本发明的乳化柴油的高效助燃供油装置， 由于增设有乳化泵，就 能够在发动机较长时间停止工作而油箱内还有未用完的乳化柴油时， 可以在柴油机下次使用前，用乳化泵将乳化柴油箱内的剩油或剩油和 补加的新油搅拌混合数分钟，即可使乳化柴油箱内的剩油或剩油和补 加的新油一起被再次乳化而恢复其均质稳定，有效的解决了因长时间 停止不用而出现部分的分离现象。又由于能将快要进入柴油机的乳化 柴油预热到有利于雾化和充分燃烧的最佳温度，使乳化柴油能更加符 合在柴油机内充分燃烧的条件，既能减少有害气体的排出而有利于环 保， 又能增加发动机的动力输出， 大大提高了节能与环保效果。 同时 充分利用发动机冷凝水的热量为乳化柴油进行预热，可使油温上升到 50Ό左右， 再用电热管进行恒温辅助加热到 70-79°C， 能起到节约用 电的效果，为乳化柴油在各种柴油动力机械特别是在汽车等小排量柴 油机作燃油使用提供了有效措施。 附图说明
附图 1是本发明的一种结构示意图；
附图 2是附图 1中的一种节能加热装置的结构示意图。
具体实施方式
附图非限制性公开了本发明的一个具体实施例，下面结合附图对 本发明作进一步的描述。
参见附图 1， 图中的 1是柴油箱， 2是乳化泵， 3是乳化柴油箱， 4是常开电磁阀， 5是常闭电磁阀， 6是冷凝水换热器， 7是恒温辅助 加热器， 7是柴油机输油泵。 其结构主要由柴油箱 1、 乳化柴油箱 3、 常开电磁阀 4、 常闭电磁阀 5、 乳化泵 2和节能加热装置组成， 所述 乳化泵 2的进、 出油口分别与乳化柴油箱 3的下部和上部连通， 常开 电磁阀 4的进油口与乳化柴油箱 3连接，常闭电磁阀 5的进油口与柴 油箱 1连接，常开电磁阀 4和常闭电磁阀 5的出油口相互连接后与节 能加热装置的进油口连接， 节能加热装置的出油口与柴油机输油泵 8 连接。为了确保连续供油，所述常开电磁阀 4和常闭电磁阀 5为两个 联动的同步电磁阀。 所述乳化泵 2可选用 CN2608722Y号专利的柴油 乳化泵， 也可选用超声波振荡器直接置于乳化柴油箱中进行乳化。
为了使加热后的乳化柴油达到既不分离又便于雾化的最佳状态， 所述节能加热装置的最佳加热温度控制在 70- 79Ό之间，又为了节能， 充分利用发动机冷凝水的热量为乳化柴油进行预热，可使油温上升到 50°C左右， 再用电热管进行恒温辅助加热到 70- 79°C。 其结构包括冷 凝水换热器 6和恒温辅助加热器 7， 其中， 冷凝水换热器 6包括设有 进、 出水口 6- 2及 6- 5的壳体 6-1和装在壳体内的换热管 6- 3, 恒温 辅助加热器 7包括壳体 7-1和装在壳体内的电热管 7-4、螺旋管 7 - 2、 导热油 7-5和温度传感器 7-6， 其结构如图 2所示， 所述冷凝水换热 器的换热管 6-3与恒温辅助加热器的螺旋管 7-2串联连接，冷凝水换 热器换热管的另一端口 6-4为节能加热装置的进油口，恒温辅助加热 器螺旋管的另一端口 7-3为节能加热装置的出油口。为了使恒温效果 更好，可在冷凝水换热器的壳体和恒温辅助加热器的壳体外包裹有保 温层 9。 利用冷凝水的热量为乳化柴油进行预热， 再用电热管进行恒 温辅助加热到有利于充分燃烧的最佳温度。
使用时，将冷凝水换热器 6的进、出水口 6-2及 6-5分别与柴油 机的冷凝水出水口和冷凝器的进水口连接， 节能加热装置的出油口 7-3与柴油机输出泵连接， 由柴油机输出泵为柴油机供油。 通过自动 控制电路控制该装置工作。
所述乳化泵 2可根据油箱 3容积的大小和形状不同可内置或外置 安装于油箱内或油箱外。自动控制电路可根据乳化燃油的特性设定一 个时间长度。若柴油机停止工作时间超过此时间长度，在启动柴油机 时乳化泵 2同时开始乳化搅拌工作，完成搅拌程序以后自动停止； 否 则则不工作。这样可在保证乳化柴油质量的同时，减少了乳化泵的工 作量， 使乳化泵无需在每次启动时都工作。
由于乳化柴油的冷机启动效果差，因而需要在乳化柴油及纯柴油 之间加装两个联动的同步电磁阔，利用同步电磁阀能方便的在柴油机 停机之前将油路切换到用纯柴油供油，在柴油机启动运行平稳后再将 油路切换成用乳化柴油供油。 以保证柴油机正常稳定地工作。当柴油 机使用乳化柴油时， 同步电磁阀处于断电状态， 即常开电磁阔 4打开 而常闭电磁阀 5关闭，恒温辅助加热器正常工作。在柴油机停机之前 将油路切换到用纯柴油供油时， 同步电磁阀处于通电开启状态， 即常 开电磁阀 4关闭而常闭电磁阀 5打开，恒温辅助加热器则处于不工作 的断电状态，使纯柴油的温度不会过高，又能将油路中的乳化柴油更 换成纯柴油而有利于下次启动。是一种具有结构合理、使用方便、乳 化性能稳定和耗电量低等优点的高效助燃供油装置。

Claims

权 利 要 求
1、一种乳化柴油的高效助燃供油装置包括乳化柴油箱、柴油箱、 常开电磁阀和常闭电磁阀， 其特征在于还包括乳化泵和节能加热装 置， 所述乳化泵的进、 出油口分别与乳化柴油箱的下部和上部连通， 常开电磁阀的进油口与乳化柴油箱连接，常闭电磁阀的进油口与柴油 箱连接，常开电磁阀和常闭电磁阀的出油口相互连接后与节能加热装 置的进油口连接， 节能加热装置的出油口与柴油机输油泵连接。
2、 如权利要求 1所述的乳化柴油的高效助燃供油装置， 其特征 在于所述常开电磁阀和常闭电磁阀为两个联动的同步电磁阀。
3、 如权利要求 1或 2所述的乳化柴油的高效助燃供油装置， 其 特征在于所述节能加热装置的加热温度为 70- 79°C， 其结构包括冷凝 水换热器和恒温辅助加热器， 其中， 冷凝水换热器包括设有进、 出水 口的壳体和装在壳体内的换热管，恒温辅助加热器包括壳体和装在壳 体内的电热管、螺旋管、导热油和温度传感器，所述冷凝水换热器的 换热管与恒温辅助加热器的螺旋管串联连接，冷凝水换热器换热管的 另一端口为节能加热装置的进油口，恒温辅助加热器螺旋管的另一端 口为节能加热装置的出油口。
4、 如权利要求 3所述的乳化柴油的高效助燃供油装置， 其特征 在于所述冷凝水换热器的壳体和恒温辅助加热器的壳体外包裹有保 温层。
PCT/CN2007/003133 2007-10-26 2007-11-05 Dispositif d'alimentation d'huile à support de combustion haute efficacité pour huile diesel émulsifiée WO2009052664A1 (fr)

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