CN201972816U - Preheating system of high-viscosity fuel oil for fueling diesel engine - Google Patents
Preheating system of high-viscosity fuel oil for fueling diesel engine Download PDFInfo
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- CN201972816U CN201972816U CN2011201117796U CN201120111779U CN201972816U CN 201972816 U CN201972816 U CN 201972816U CN 2011201117796 U CN2011201117796 U CN 2011201117796U CN 201120111779 U CN201120111779 U CN 201120111779U CN 201972816 U CN201972816 U CN 201972816U
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- 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
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Abstract
The utility model discloses a preheating system of high-viscosity fuel oil for fueling a diesel engine, and relates to the technical field of a diesel engine fueled with high-viscosity fuel oil. The preheating system comprises a heat exchanger (11), a temperature sensor (8), an exhaust control valve (12) and a controller (13), wherein an exhaust port of an engine (1) is connected with an exhaust pipe (2) for discharging waste gas, the exhaust pipe (2) is provided with a branch pipe which is connected with the heat exchanger (11) by a heat exchanger air inlet pipe (4), the exhaust control valve (12) is arranged on the heat exchanger air inlet pipe (4); a heat exchanger air outlet pipe (5) is connected with a tail gas processing device; an fuel oil box (10) is connected with an fuel oil inlet of the heat exchanger (11) through a fuel oil pipe (6), and a fuel oil outlet of the heat exchanger (11) is connected with an injection pump (9) by the fuel oil pipe (6), and connected in the engine (1). In the utility model, the heat exchanger utilizing discharged hot gas energy of a combustion chamber is adopted for heating oil materials such as jatropha curcas oil and the like, so that the oil materials have viscosity, the mobility is improved, and the spraying condition of an oil nozzle is improved.
Description
Technical field
The utility model relates to the Diesel Engine Technique Field of direct combusting high glutinous degree fuel oil, concretely, is the pre-heating system of the combusting high glutinous degree fuel oil of a kind of diesel engine.
Background technique
As the substitute fuel of internal-combustion engine, in the current Biomass Energy Utilization, the most common is exactly to utilize living beings to produce liquid fuel and gaseous fuel.At present, utilizing vegetable oil or modified vegetable oil to use as diesel fuel or with the diesel oil blending more and more is subject to people's attention.
Vegetable oil mainly is made up of water-fast triglyceride, and its chemical structure is than diesel oil complexity, and wherein fatty acid is connected with glycerine by fat.Compare with diesel oil, vegetable oil has following characteristics: its molecular proportion diesel oil molecules is big 3 times, and physics, chemical property are all different with diesel oil; The viscosity height, volatility is poor, the spray droplet diameter is big, spray penetration is big; Indexs such as flash-point, density, carbon residue, ash content, Sulpher content all meet the Diesel oil standard; Calorific value is lower slightly, but because of density is big, the volume calorific value is more approaching; Cetane number is slightly less than Diesel oil standard-required value between 37～45, but can satisfy the requirement of diesel combustion; Cloud point generally between-3.9～10 ℃, can satisfy the index request of diesel oil more than-No. 20.
Wherein, Jatropha curcas oil is exactly a kind of vegetable oil that is expected to become the diesel engine alternative fuel.But because the viscosity of Jatropha curcas oil is higher, can bring following problem when diesel engine directly uses at normal temperatures: resistance is big when carrying in diesel fuel system, and supply of fuel under the same conditions reduces; Higher viscosity can influence fuel through the atomizing effect behind the nozzle, and the uneasy whole step that causes burning improves; More sedimentation of fuel will cause spray nozzle clogging seriously to be changed on nozzle; Unburnt fuel is sneaked into lubricating system of diesel oil engine, causes lubricant pollution, produces greasy filth.
There are some researches show that the heavy oil that comprises Jatropha curcas oil is after the process preheating, its viscosity can descend gradually.Test shows that when Jatropha curcas oil was heated to 150 ℃, the diesel oil under its viscosity and the normal temperature was suitable.Jatropha curcas oil after the reduction viscosity, its mobile raising can be used as the fuel of diesel engine.In addition, viscosity reduces and also can prevent from filter cleaner to cause owing to viscosity is too high excessive the or obstruction of filter cleaner resistance.
Many in the market employing burners etc. carry out preheating to fuel, and its shortcoming is: 1, the efficiency of heating surface is not high; 2, consume the extra energy.Only be applicable to the high latitude area engine cold-start, be not suitable for the heating of high viscosity fuel oils such as Jatropha curcas oil.
In addition, the exhaust of motor is generally 400 ℃～650 ℃ temperature, and is low more from exhaust valve temperature far away more.This part heat is often discharged with engine exhaust, and wastes neither energy-conservation also not environmental protection.
Therefore, in order to heat the little seeds of a tung oil tree, to reduce its viscosity, utilize the heat exchanger of engine exhaust to heat if can adopt, then can reduce the cost of heating fuel significantly, and, because heat exchanger can absorb the heat energy in the exhaust, so can reduce the temperature of exhaust, waste heat obtains utilizing.
The purpose of this utility model is in order to address the above problem, to provide a kind of engine exhaust that utilizes high viscositys such as Jatropha curcas oil to be used the device that carries out preheating.Viscosity is big in order to adopt, the high viscosity fuel oils such as Jatropha curcas oil of volatility difference act as a fuel, and in this device, adopts and utilizes the heat exchanger of exhaust combustion chamber heat energy to heat high viscosity fuel, and its viscosity is reduced, and improves liquidity, and improves the spraying situation of oil nozzle.
Summary of the invention
Technical problem to be solved in the utility model is that employing utilizes the heat exchanger of engine exhaust to heat high viscosity fuel, reduces viscosity, improves its flowability, improves the motor spraying.Reduce the temperature of engine exhaust.
Technical solution adopted in the utility model is that the high-temperature exhaust air that utilizes motor is made heat exchanger as thermal source.The delivery temperature height of motor, and under the steady working condition of motor, have than stable flow rate.And utilize engine exhaust to make heat exchanger, can not produce significantly influence to power character, the Economy of motor.Therefore, adopt engine exhaust to feed heat exchanger, improve the temperature of the high viscosity fuel in the oil pipe, reduce its viscosity, improve its flowability, and the spraying situation of motor is improved, thereby improve the combustion performance and the emission performance of motor.
Concrete technological scheme of the present utility model is, exhaust opening of engine connects the outlet pipe combustion gas, and outlet pipe is established arm, connects heat exchanger by the heat exchanger suction tude, and gas exhausting valve is located on the heat exchanger suction tude; The heat exchanger steam outlet pipe connects exhaust gas processing device; Fuel tank is by the filler opening of oil pipe connection heat exchanger, and the oil outlet of heat exchanger connects glow plug by oil pipe, and oil feeds motor after entering the Injection Pump pressurization again.Glow plug is connected respectively with controller with gas exhausting valve.
All beneficial effects of the utility model really are that plant oil viscosity height, poor flow quality are just restricting the use of vegetable oil on motor.Under the prerequisite of the oil supply system that does not change the former machine of motor, high viscosity fuel is carried out preheating, to reduce its viscosity, improve flowability and have great significance as motor fuel for vegetable oil.The utility model adopts engine exhaust to feed heat exchanger, and the high viscosity fuel in the oil pipe is heated, and reduces its viscosity, improves its flowability, and finally the operation to motor brings favorable influence.The little seeds of a tung oil tree suit in barren mountain region growth, and seed oil content height is a kind of good renewable energy sources.Absorbing carbon dioxide in its growing process, cost is low.Reinforcement can reduce pollution to environment to the utilization of Jatropha curcas oil, and also can reduce the dependence of petroleum resources and reduce the total discharge amount of carbon dioxide, be a kind of green energy resource of sustainable development, energy-conserving and environment-protective.
Description of drawings
Fig. 1 utilizes engine exhaust Jatropha curcas oil to be carried out the device schematic representation of preheating
Fig. 2 heat exchanger internal structure schematic representation
Fig. 3 glow plug schematic internal view.
Among the figure, 1 motor, 2 outlet pipes are managed after 3 exhausts, 4 heat exchanger suction tude, 5 heat exchanger steam outlet pipes, 6 oil pipes, 7 glow plugs, 8 temperature transducers, 9 Injection Pumps, 10 fuel tanks, 11 heat exchangers, 12 gas exhausting valves, 13 controllers, 14 volutes, 15 heat exchanger shell, 16 electric heating wire.
Embodiment
Motor intends adopting general diesel engine.The character and the diesel oil of Jatropha curcas oil are more approaching, can be under the prerequisite that does not change fuel system for diesel engine, only need before Jatropha curcas oil enters diesel injector, carry out preheating to a certain degree, can be on diesel engine directly with the Jatropha curcas oil operation that acts as a fuel.
The delivery temperature of motor 1 higher (being generally 400 ℃～650 ℃).In exhaust process, up along with engine piston, motor 1 beginning exhaust, exhaust has certain pressure.Do not needing with under the condition of blower fan, exhaust can enter heat exchanger very smoothly, has improved overall system efficiency.High-temperature exhaust air in the motor 1 is discharged along outlet pipe 2, after gas exhausting valve 12 adjustings, the exhaust of a part enters heat exchanger 11 along heat exchanger suction tude 4, and after the full-bodied Jatropha curcas oil in the heat exchanger 11 heated, along heat exchanger steam outlet pipe 5 rows to exhaust gas processing device.And full-bodied Jatropha curcas oil is stored in the fuel tank 10, enters in the heat exchanger 11 by oil pipe 6, and by after the heating in the heat exchanger 11, enters glow plug 7 along oil pipe 6 again, enter Injection Pump 9 pressurization again after, feed motor 1.
Pipe 3 is directly arranged remaining high-temperature exhaust air to exhaust gas processing device when air displacement is excessive after the exhaust, can play the effect of pressure in the balance outlet pipe like this.
Heat exchanger 11 is a shell and tube heat exchanger, and what flow in the pipe is high viscosity fuel.High-temperature exhaust air enters heat exchanger 11 along heat exchanger suction tude 4, and its entry position is at the middle part of heat exchanger, and the suction port position of heat exchanger steam outlet pipe 5 is higher, rises because High Temperature Gas is known from experience, and descends when temperature just reduces.Such layout can make the air-flow formation eddy current to a certain degree in the heat exchanger, increases heat exchange efficiency, makes the abundant heat exchange of high-temperature exhaust air.Oil pipe like this, improves the surface area of heat exchange as best one can in the spiral layout of heat exchanger 11 inner employings limited space.Fuel oil flows in volute 14, and volute can improve the surface area of heat exchange as best one can in limited space, and makes fuel oil prolong at the flowing time of heat exchanger 11, makes that full-bodied Jatropha curcas oil is fully heated.Heat exchanger shell 15 has good sealing property, and high temperature resistant.And, the volume of the volume of heat exchanger shell 15 in the outlet pipe, like this, whole heat exchanger shell has also played the effect that is similar to gas holder, and it is more abundant to make heat exchange carry out ground.On the other hand, the housing of big volume has also played noise elimination effect to a certain degree.
The caliber of heat exchanger steam outlet pipe 5 is greater than the caliber of heat exchanger suction tude 4, can make flowing of exhaust more smooth like this.Equally, the caliber of heat exchanger steam outlet pipe 5 also is greater than the caliber of outlet pipe 3, also is in order to reduce the flow resistance of exhaust in pipeline.
On the oil pipe between heat exchanger and the Injection Pump, set up a glow plug 7.Glow plug can be when motor 1 starts or the temperature of Jatropha curcas oil power can not satisfy usage requirement the time, with heated fuel oil.Electric heating wire 16 in the glow plug 7 is wrapped on the oil pipe 6, and when glow plug 7 energisings, electric heating wire 16 will heat the Jatropha curcas oil of 6 li in oil pipe, plays the effect of assistant heating.
A temperature transducer 8 is installed between glow plug 7 and Injection Pump 9, and the Jatropha curcas oil that temperature transducer 8 connects 6 li in 13 pairs of oil pipes of controller carries out thermometric.When oily temperature was lower than setting temperature, temperature signal imported controller 13 into, and controller 13 sends instruction gas exhausting valve 12 apertures and increases, and the high-temperature gas that enters heat exchanger 11 increases; When oily temperature was higher than setting temperature, gas exhausting valve 12 apertures turned down, and the gas flow that enters heat exchanger 11 reduces, unnecessary exhaust by exhaust after pipe 3 discharge.Whole Preheating unit is carried out " closed loop " control.
, by heat exchanger steam outlet pipe 5 chilled exhaust is discharged again by behind the heat exchanger 11 in exhaust, also can reach the purpose that reduces delivery temperature.
Claims (5)
1. the pre-heating system of the combusting high glutinous degree fuel oil of diesel engine, it is characterized in that, comprise heat exchanger (11), temperature transducer (8), gas exhausting valve (12), controller (13), the relief opening of motor (1) connects outlet pipe (2) combustion gas, outlet pipe (2) is established arm, connect heat exchanger (11) by heat exchanger suction tude (4), gas exhausting valve (12) is located on the heat exchanger suction tude (4); Heat exchanger steam outlet pipe (5) connects exhaust gas processing device; Fuel tank (10) is by the filler opening of oil pipe (6) connection heat exchanger (11), and the oil outlet of heat exchanger (11) connects Injection Pump (9) by oil pipe (6), feeds motor (1); Described gas exhausting valve (12) is connected with controller (13).
2. the pre-heating system of the combusting high glutinous degree fuel oil of diesel engine according to claim 1, it is characterized in that, described heat exchanger (11) is a shell and tube heat exchanger, high-temperature exhaust air enters heat exchanger (11) along heat exchanger suction tude (4), heat exchanger suction port position is at the middle part of heat exchanger, the heat exchanger gas port position of giving vent to anger is arranged on the top of heat exchanger (11) housing, and the oil pipe in the heat exchanger (11) is volute (14).
3. the pre-heating system of the combusting high glutinous degree fuel oil of diesel engine according to claim 1, it is characterized in that, also comprise glow plug (7), described glow plug (7) is arranged on the oil pipe between heat exchanger (11) and the Injection Pump (9), and glow plug (7) is connected with controller (13).
4. the pre-heating system of the combusting high glutinous degree fuel oil of diesel engine according to claim 3, it is characterized in that, on the oil pipe between described glow plug (7) and the Injection Pump (9) temperature transducer (8) is set, described temperature transducer (8) connects controller (13).
5. according to the pre-heating system of claim 1,2, the combusting high glutinous degree fuel oil of 3 or 4 described diesel engines, it is characterized in that, the caliber of described heat exchanger steam outlet pipe (5) is greater than the caliber of heat exchanger suction tude (4), and the caliber of heat exchanger steam outlet pipe (5) also is greater than the caliber of outlet pipe (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201117796U CN201972816U (en) | 2011-04-15 | 2011-04-15 | Preheating system of high-viscosity fuel oil for fueling diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201117796U CN201972816U (en) | 2011-04-15 | 2011-04-15 | Preheating system of high-viscosity fuel oil for fueling diesel engine |
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| CN201972816U true CN201972816U (en) | 2011-09-14 |
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| CN2011201117796U Expired - Lifetime CN201972816U (en) | 2011-04-15 | 2011-04-15 | Preheating system of high-viscosity fuel oil for fueling diesel engine |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155339A (en) * | 2011-04-15 | 2011-08-17 | 江苏大学 | High-viscosity fuel preheating system for diesel engine |
| CN102705307A (en) * | 2012-06-12 | 2012-10-03 | 三一重机有限公司 | Engineering vehicle, hydraulic oil preheating device and method |
| CN105604694A (en) * | 2016-01-28 | 2016-05-25 | 哈尔滨工业大学 | Preheating-type chemical regenerative diesel engine |
-
2011
- 2011-04-15 CN CN2011201117796U patent/CN201972816U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102155339A (en) * | 2011-04-15 | 2011-08-17 | 江苏大学 | High-viscosity fuel preheating system for diesel engine |
| CN102155339B (en) * | 2011-04-15 | 2012-11-07 | 江苏大学 | High-viscosity fuel preheating system for diesel engine |
| CN102705307A (en) * | 2012-06-12 | 2012-10-03 | 三一重机有限公司 | Engineering vehicle, hydraulic oil preheating device and method |
| CN105604694A (en) * | 2016-01-28 | 2016-05-25 | 哈尔滨工业大学 | Preheating-type chemical regenerative diesel engine |
| CN105604694B (en) * | 2016-01-28 | 2018-06-22 | 哈尔滨工业大学 | A kind of preheating type chemical back heating formula diesel engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110914 Effective date of abandoning: 20130227 |
|
| RGAV | Abandon patent right to avoid regrant |