CN209908629U

CN209908629U - Fuel preheating device of biodiesel

Info

Publication number: CN209908629U
Application number: CN201920785088.0U
Authority: CN
Inventors: 肖淑梅; 赵翔
Original assignee: Yangzhou Polytechnic College Yangzhou Radio and TV University
Current assignee: Yangzhou Polytechnic College Yangzhou Radio and TV University
Priority date: 2019-05-28
Filing date: 2019-05-28
Publication date: 2020-01-07
Anticipated expiration: 2029-05-28

Abstract

The utility model discloses a fuel preheating device of a biodiesel. This kind of biodiesel's fuel preheating device includes spiral blast pipe heat exchanger, holder, spiral blast pipe heat exchanger is connected with exhaust pipe of exhaust gas turbocharger, and diesel engine's defeated oil pipe is followed spiral blast pipe heat exchanger middle part is passed, defeated oil pipe with spiral blast pipe heat exchanger install in the holder, the holder is installed in the frame. The utility model discloses do not need the extra energy consumption, utilize the temperature of waste gas to pass through the biodiesel in the defeated oil pipe of thermal radiation heating, make the biodiesel temperature rise, viscosity descends, and the vapor pressure increases to improve biodiesel atomization effect, improved fuel adaptability and combustion characteristic, optimized the cold startability of fuel low temperature.

Description

Fuel preheating device of biodiesel

Technical Field

The utility model relates to a biodiesel's viscosity reducing device, in particular to preheating device that biodiesel fires.

Background

As a fossil fuel, petroleum is a main fuel accounting for 32.9% of global energy consumption, but its reserves are reduced year by year and the problem of environmental pollution is becoming serious, so that the search for clean renewable energy sources to replace the conventional fossil fuels has become one of the hot spots of global energy research. The biodiesel is a mixture composed of long-chain fatty acid ester, is mainly generated by taking vegetable oil, animal fat and the like as raw materials and carrying out ester exchange reaction with alcohol, and has the following advantages compared with the traditional fossil diesel: 1. the biodegradable film is biodegradable, and is beneficial to protecting the natural environment; 2. the flash point is high, and the use, the storage and the transportation are safer; 3. the lubricating grease has good lubricating performance, and can reduce the abrasion of relevant parts of an engine, so the research on the biodiesel becomes a research hotspot for replacing petroleum fuels at present. However, compared with the traditional fossil diesel, the biodiesel has larger density, viscosity and surface tension, and lower vapor pressure, so that the spraying characteristics of the biodiesel are different from those of the traditional fossil diesel, which causes that the liquid phase penetration distance of the biodiesel spraying is longer, the average diameter of liquid drops is larger, and the fuel oil atomizing effect and the low-temperature cold start are not as good as those of the traditional fossil diesel, so that how to reduce the viscosity of the biodiesel entering an engine is an effective research direction, and through research, the viscosity of the biodiesel is closely related to the temperature, and the current method for reducing the biodiesel is as follows:

1. the fuel is heated by the diesel engine cooling water. The method is to install a set of device on the water pump, so that the cooling water circulates through the oil tank, the filter or the vicinity of the oil pipe through a branch, and the heat of the cooling water is utilized to achieve the purpose of heating the fuel. However, because the temperature of the cooling water is low and is between 85 and 95 ℃, after radiation heat transfer, the efficiency is lower, and the temperature rise of the fuel in the fuel pipe is insufficient; in other documents, a water channel is used for wrapping an oil pipe, but an oil pipe inlet and an oil pipe outlet are required to be reserved, so that the problem of leakage of cooling water is easily caused by the scheme.

2. A set of electric heating device is additionally arranged outside the filter and the oil pipe. The high temperature generated by the heating device is transmitted to the oil pipe in a radiation or conduction mode, but the heating device consumes more energy and has low efficiency.

3. A set of electric heating device is additionally arranged in an oil tank, a filter and the like. The oil in the fuel pipe cannot be preheated, and particularly in winter, the diesel oil in the fuel pipe can be rapidly cooled, so that the heating effect is poor.

4. Preheating by using waste gas, putting a part of the oil pipe and the exhaust pipe into a closed device, and radiating the heat of the waste gas to the oil pipe to heat. Although no additional energy is needed in the scheme, the problem of overheating of the oil pipe is caused by considering the high temperature (400-. This scheme security is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a be applied to biodiesel's fuel preheating device, through this kind of preheating device, the effectual biofuel's that gets into the engine temperature that has improved to reduce waste gas jet pressure by a wide margin, reduced the emission noise of waste gas.

In order to realize the above object, the utility model relates to a biodiesel's fuel preheating device adopts following technical scheme:

the utility model provides a biodiesel's fuel preheating device, includes spiral blast pipe heat exchanger, holder, spiral blast pipe heat exchanger is connected with exhaust pipe of exhaust gas turbocharger, and diesel engine's defeated oil pipe is followed spiral blast pipe heat exchanger middle part is passed, defeated oil pipe with spiral blast pipe heat exchanger install in the holder, the holder is installed in the frame.

The utility model discloses the during operation, exhaust gas turbine booster exhaust waste gas gets into spiral blast pipe heat exchanger, and waste gas is the spiral in the spiral blast pipe heat exchanger again and advances, and waste gas carries out the heat radiation outwards in spiral blast pipe heat exchanger, and the heating erects the defeated oil pipe in the middle of spiral blast pipe heat exchanger, makes the inside biodiesel of oil pipe be heated, and then the temperature rises, and viscosity descends, and vapor pressure increases to biodiesel atomization effect has been improved.

Compared with the prior art, the beneficial effects of the utility model reside in that: the waste gas temperature of the diesel engine reaches 400-.

On the basis of the technical scheme, the utility model discloses can also do as follows the improvement:

further: the air flue lead angle of the spiral exhaust pipe heat exchanger is larger than 0 degree and smaller than 15 degrees. The beneficial effect of this step: the air flue lead angle is smaller, so that the spiral exhaust pipe heat exchanger has a higher throttling effect, the pressure of waste gas is greatly reduced after the waste gas passes through the device, and the noise reduction and emission reduction effects are good.

Further: and the outer wall of the oil delivery pipe is provided with a heat-resistant coating. The beneficial effect of this step: the oxidation effect of long-term high-temperature radiation on oil pipelines is prevented by the heat-resistant coating.

Further: the heat-resistant coating is an epoxy modified organic silicon resin coating.

Further: the retainer is L-shaped, and through holes for erecting the spiral exhaust pipe heat exchanger and the oil conveying pipe are respectively formed in the retainer. The beneficial effect of this step: through the retainer, the spiral exhaust pipe heat exchanger and the oil conveying pipe are relatively fixed, so that a heating system formed by the spiral exhaust pipe heat exchanger and the oil conveying pipe has good stability.

Further: and the spiral exhaust pipe heat exchanger is provided with a silencer. The beneficial effect of this step: the noise of the exhaust gas discharged by the heat exchanger with the spiral exhaust pipe is reduced through the muffler.

Further: and a temperature sensor is arranged between the oil delivery pipe and the diesel engine and is connected with an automobile instrument panel control assembly. The beneficial effect of this step: the temperature of the biodiesel in the oil delivery pipe is detected by a temperature sensor.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a spiral stack heat exchanger;

FIG. 3 is a schematic view of the cage construction;

fig. 4 is a top view of fig. 3.

The system comprises a spiral exhaust pipe heat exchanger 1, a temperature sensor 2, a retainer 3, a silencer 4, a diesel engine 5, an oil delivery pipe 6, a compressor 7, an air inlet pipe 8, a cooler 9, an exhaust pipe 10 and a turbine 11.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience of description and simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

As shown in fig. 1-4, a fuel preheating device of a biodiesel engine comprises a spiral exhaust pipe heat exchanger 1, a temperature sensor 2 and a retainer 3, wherein one end of the spiral exhaust pipe heat exchanger is connected with an exhaust pipe of an exhaust gas turbocharger, a silencer 4 is arranged at the other end of the spiral exhaust pipe heat exchanger, an oil delivery pipe 6 of a diesel engine 5 penetrates through the middle part of the spiral exhaust pipe heat exchanger, the spiral exhaust pipe heat exchanger spirally surrounds the oil delivery pipe, the air flue lift angle psi of the spiral exhaust pipe heat exchanger is more than 0 degree and less than 15 degrees, the oil delivery pipe and the spiral exhaust pipe heat exchanger are arranged on the retainer, the retainer is arranged on a frame and is L-shaped, through holes for erecting the spiral exhaust pipe heat exchanger and the oil delivery pipe are respectively arranged on the retainer, the outer wall of the oil, the temperature sensor is connected with the automobile instrument panel control assembly. In the embodiment, the biodiesel is delivered from the fuel tank, passes through the fuel delivery pump and the fuel filter, and is delivered to the fuel delivery pipe externally provided with the heat-resistant coating, the fuel delivery pipe is connected with the diesel engine, the fuel delivery pipe is surrounded by the spiral exhaust pipe heat exchanger, the radiant heat of the fuel delivery pipe is transmitted to the fuel delivery pipe, and then the biodiesel in the fuel delivery pipe is heated, so that the temperature of the biodiesel is increased, the viscosity of the biodiesel is reduced, and the biodiesel continues to pass through the fuel delivery pipe and then enters the cylinder of the diesel engine through the; air enters the compressor 7 from an air inlet, is compressed and then enters a cylinder of the diesel engine along an air inlet pipe 8 and an intercooler 9, biodiesel is mixed with the air entering the cylinder and is combusted to generate waste gas, the waste gas is discharged from an exhaust valve and enters an exhaust pipe 10, the waste gas is conveyed to the turbine 11 through the exhaust pipe, the turbine is driven by the energy of high-pressure waste gas, and meanwhile, the turbine and the compressor are coaxial and drive the compressor to work.

The fuel oil preheating device of the biological diesel engine has the advantages that:

1. the method has the advantages that extra energy consumption is not needed, the temperature of the exhaust gas of the diesel engine is as high as 400-;

2. when high-temperature and high-pressure waste gas passes through the spiral exhaust pipe heat exchanger, the rising angle of the air passage is small, so that a high throttling effect is caused, the pressure of the waste gas is greatly reduced after the waste gas passes through the spiral exhaust pipe heat exchanger, the energy consumption of a rear-end silencer is greatly reduced, and the noise reduction and emission reduction effects are good;

3. the structure is compact, and the structure of the original engine is not required to be changed; the installation is convenient, no seal exists, and the detection and maintenance are convenient; the overheating phenomenon can not be caused, and the method is safe and reliable.

In the specification of the present invention, a large number of specific details are explained. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The utility model provides a biological diesel engine's fuel preheating device which characterized in that: including spiral blast pipe heat exchanger, holder, spiral blast pipe heat exchanger is connected with exhaust pipe of exhaust gas turbocharger, and diesel engine's defeated oil pipe is followed spiral blast pipe heat exchanger middle part is passed, defeated oil pipe with spiral blast pipe heat exchanger install in the holder, the holder is installed in the frame.

2. The fuel preheating device of a biodiesel engine according to claim 1, characterized in that: the air flue lead angle of the spiral exhaust pipe heat exchanger is larger than 0 degree and smaller than 15 degrees.

3. The fuel preheating device of a biodiesel engine according to claim 1, characterized in that: and the outer wall of the oil delivery pipe is provided with a heat-resistant coating.

4. The fuel preheating device of a biodiesel engine according to claim 3, characterized in that: the heat-resistant coating is an epoxy modified organic silicon resin coating.

5. The fuel preheating device of a biodiesel engine according to claim 1, characterized in that: the retainer is L-shaped, and through holes for erecting the spiral exhaust pipe heat exchanger and the oil conveying pipe are respectively formed in the retainer.

6. The fuel preheating device of a biodiesel engine according to claim 1, characterized in that: and the spiral exhaust pipe heat exchanger is provided with a silencer.

7. The fuel preheating device of a biodiesel engine according to claim 1, characterized in that: and a temperature sensor is arranged between the oil delivery pipe and the diesel engine and is connected with an automobile instrument panel control assembly.