CN206608254U - A kind of thermal cycle pipeline, engine fuel defroster, engine fuel induction system - Google Patents

Abstract

The utility model provides a kind of thermal cycle pipeline, engine fuel defroster, engine fuel induction system, belongs to Vehicle Engineering.Thermal cycle pipeline is heated using anti-icing fluid to fuel oil.It includes the first mozzle, the second mozzle, outer tube and the inner tube for conveying engine fuel.Inner pipe portion is all sheathed in outer tube, and the first gap is formed between outer tube and inner tube.First mozzle, the second mozzle are all connected to inner tube, and the first transfer passage formed for conveying engine fluid is sequentially communicated by the tube chamber of the first mozzle, the first gap to the tube chamber of the second mozzle.Fuel oil circulates in inner tube tube chamber, and anti-icing fluid circulates in the first transfer passage, and fuel oil and anti-icing fluid are completely isolated, it is ensured that the security of fuel Heating, and anti-icing fluid makes the heating of fuel oil evenly stablize in fuel oil external rings around circulation.Heating is carried out to fuel oil using anti-icing fluid and improves efficiency of energy utilization, and more longlasting anti-icing fluid can be heated.

Description

A kind of thermal cycle pipeline, engine fuel defroster, engine fuel induction system

Technical field

The utility model is related to Vehicle Engineering, antifreeze in particular to a kind of thermal cycle pipeline, engine fuel Device, engine fuel induction system.

Background technology

Diesel engine improves air themperature using the method for compressed air, air themperature is exceeded the spontaneous combustion of diesel oil Point, then spray into diesel oil, diesel spray and air mixing, while ignition, its diesel oil used is raised with temperature, stickiness With burning point reduction, burn more abundant, while spray effect is more preferable.

The Fuel injection system of Diesel engine is：Diesel oil first enters high-pressure oil pump from fuel tank, then is transported to by high-pressure oil pump It is operated in cylinder body.Diesel oil is delivered to oil cylinder, the connection oil spout of high-pressure oil pipe end by general high voltage oil pump by high-pressure oil pipe Mouth makes diesel oil formation spray form, because high-pressure oil pump provides high pressure, is sprayed within the extremely short time to combustion chamber of air cylinder Diesel spray is penetrated, after the air with high pressure-temperature is mixed, combustion mixture self-burning, fierce expansion produces explosive force, pushes away The descending acting of piston.Now temperature is up to 1900~2000 DEG C, and pressure is up to 60~100 atmospheric pressure, and the moment of torsion of generation is very Greatly, therefore the characteristics of Diesel engine has the thermal efficiency and better economy.

But, also there is following defect in diesel engine oil supply system：Lived in normal temperature under low temperature environment, the diesel oil in fuel tank Mobility reduction even wax deposition, burning point rise, causes the condensation rate of diesel oil low, burns insufficient, cause engine power to drop Low, oil consumption and capacity are all very big.

Utility model content

The purpose of this utility model is to provide a kind of thermal cycle pipeline, and it can be using engine fluid to engine Fuel oil is heated, and reaches thermal-stable, safe, lasting purpose.

Another object of the present utility model is to provide a kind of engine fuel defroster, and it can be effectively using starting The waste heat of machine anti-icing fluid in itself is heated to engine fuel, prevents engine fuel can not be just in the case where temperature is relatively low Often use.

Another object of the present utility model is to provide a kind of engine fuel induction system, and the system is when temperature is relatively low Also can normally it run.

What embodiment of the present utility model was realized in：

A kind of thermal cycle pipeline, suitable for being heated using engine fluid to engine fuel.Thermal cycle pipeline bag Include the first mozzle, the second mozzle, outer tube and the inner tube for conveying engine fuel.Inner pipe portion is all sheathed on The first gap is formed in outer tube, and between outer tube and inner tube.First mozzle, the second mozzle are all connected to inner tube, by first The tube chamber of mozzle, the first gap to the tube chamber of the second mozzle be sequentially communicated to be formed for convey engine fluid first Transfer passage.

Preferably, the first mozzle and the second mozzle include the be connected with the first end of outer tube clamping, with inner tube Two ends and the 3rd end for importing engine fluid.

Preferably, inner tube is connected with the second end by the first seal washer.

Preferably, pipe cap is arranged with outside inner tube, pipe cap is threadedly coupled with the second end, the first seal washer is in pipe cap.

Preferably, thermal cycle pipeline also includes the heating tube being connected with inner tube one end.Heating tube is provided with the 3rd mozzle, the Four mozzles, pipe main body.The petroleum pipeline for being used for conveying engine fuel is provided with pipe main body.The tube wall of pipe main body is provided with through hole, Oil transportation pipe end is connected with pipe main body, and petroleum pipeline tube chamber is connected with through hole, and the petroleum pipeline other end is connected with inner tube.Pipe main body with The second gap is formed between petroleum pipeline, tube chamber, the second gap, the tube chamber of the 4th mozzle of the 3rd mozzle are sequentially communicated to be formed The second transfer passage for conveying engine fluid.

Preferably, through hole is provided with the second seal washer with petroleum pipeline junction.

Preferably, pipe main body is provided with fixed plate, and the 3rd mozzle, the 4th mozzle connect through fixed plate with the second gap Logical, petroleum pipeline is connected through fixed plate with inner tube.

Preferably, fixed plate is provided with multiple fixing holes for being used to fix heating tube.

A kind of engine fuel defroster, including above-mentioned thermal cycle pipeline.The two ends of inner tube be respectively connecting to fuel tank and Engine, inner tube is configurable for the fuel oil in fuel tank being delivered to the pipeline of engine.First mozzle and the second water conservancy diversion Guan Junyu is used for the anti-icing fluid conveyance conduit connection for conveying engine fluid.

A kind of engine fuel induction system, including above-mentioned thermal cycle pipeline.

The beneficial effect of the utility model embodiment is：

The engine that the thermal cycle pipeline that the utility model embodiment is provided mainly can be configured using engine fuel is prevented Jelly liquid is heated to fuel oil, isothermal holding, prevents engine fuel mobility reduction or even knot under conditions of temperature is relatively low Wax, influences it normally to use.The first gap is formed between outer tube and inner tube, by the tube chamber of the first mozzle, the first gap extremely The tube chamber of second mozzle is sequentially communicated the first transfer passage to be formed for conveying engine fluid.Pipe of the fuel oil in inner tube Intracavitary circulates, and anti-icing fluid circulates in the first transfer passage, and fuel oil and anti-icing fluid are separated completely, it is ensured that fuel Heating Security, anti-icing fluid also causes the heating of fuel oil evenly to stablize in fuel oil external rings around circulation.Engine work causes it certainly Body temperature is raised, and anti-icing fluid can absorb the heat of the generation of engine, then by the flowing of anti-icing fluid heat is passed into combustion Oil, improves the utilization ratio of the energy, more longlasting anti-icing fluid can also be heated, is incubated.The utility model embodiment is also There is provided a kind of engine fuel defroster.Inner tube two ends are connected with fuel tank and engine respectively, are led by the first mozzle The engine fluid entered is heated to the fuel oil for entering inner tube from fuel tank, and the fuel oil after heating can smoothly enter engine It is operated.The utility model embodiment additionally provides a kind of engine fuel induction system, and thermal cycle pipeline is installed on into hair Motivation Fuel Delivery System, it is ensured that the induction system also can normally be run at low ambient temperatures.

Brief description of the drawings

In order to illustrate more clearly of the technical scheme of the utility model embodiment, it will use below required in embodiment Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also To obtain other related accompanying drawings according to these accompanying drawings.

Fig. 1 is the thermal cycle pipeline structural representation that the utility model embodiment 1 is provided；

Fig. 2 is the thermal cycle pipeline structural representation that the utility model embodiment 1 is provided；

Fig. 3 is the first viewing angle constructions schematic diagram of first end in the utility model embodiment 1；

Fig. 4 is the thermal cycle pipeline structural representation that the utility model embodiment 2 is provided；

Fig. 5 is the thermal cycle pipeline structural representation that the utility model embodiment 3 is provided.

Icon：100- thermal cycle pipelines；The mozzles of 110- first；The mozzles of 130- second；132- first ends；134- second End；The ends of 136- the 3rd；138- seepage-proofing rings；150- outer tubes；The gaps of 152- first；160- inner tubes；162- pipe caps；200- heat circulation pipes Road；210- outer tubes；212- baffle plates；214- rotational pins；216- buckles；The mozzles of 230- second；300- thermal cycle pipelines；310- adds Heat pipe；The mozzles of 312- the 3rd；The mozzles of 314- the 4th；316- pipe main bodys；318- petroleum pipelines；320- through holes；Between 322- second Gap；324- fixed plates；326- fixing holes.

Embodiment

It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Generally here described in accompanying drawing and The component of the utility model embodiment shown can be arranged and designed with a variety of configurations.

Therefore, the detailed description of embodiment of the present utility model below to providing in the accompanying drawings is not intended to limit requirement The scope of the present utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in the utility model Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all Belong to the scope of the utility model protection.

It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi It is defined in individual accompanying drawing, then it further need not be defined and explained in subsequent accompanying drawing.

, it is necessary to explanation, the orientation of the instruction such as term " on ", " under ", " interior ", " outer " in description of the present utility model Or position relationship is that, based on orientation shown in the drawings or position relationship, or the utility model product is usually put when using Orientation or position relationship, are for only for ease of description the utility model and simplify description, rather than indicate or imply signified dress Put or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the utility model Limitation.In addition, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and it is not intended that indicating or implying phase To importance.

In description of the present utility model, in addition it is also necessary to which explanation, unless otherwise clearly defined and limited, term " are set Put ", " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, Or be integrally connected；Can be mechanical connection or electrical connection；Can be joined directly together, intermediary can also be passed through It is indirectly connected to, can is the connection of two element internals.For the ordinary skill in the art, it can be managed with concrete condition Solve concrete meaning of the above-mentioned term in the utility model.

Embodiment 1

Fig. 1 is refer to, the present embodiment provides a kind of thermal cycle pipeline 100, suitable for utilizing engine fluid to engine Fuel oil is heated, in particular for the diesel oil of easy wax deposition at a lower temperature.Thermal cycle pipeline 100 includes the first mozzle 110th, the second mozzle 130, outer tube 150 and the inner tube 160 for conveying engine fuel.Fig. 1 show the first mozzle 110th, state when the second mozzle 130 is with 150 clamping of outer tube.First mozzle 110, the second mozzle 130 block with outer tube 150 Connect close, anti-icing fluid can be prevented from access section seepage, clamping can be close from being interference fitted or being arranged first in access section Seal washer or other close-connected modes.

When being stretched out shown in Fig. 1 for the two ends of inner tube 160 out of outer tube 150, the first mozzle 110, the second mozzle 130 State.In engine fuel, diesel oil is easily uprised in winter wax deposition or stickiness, causes to be difficult with.General diesel oil It is that the fuel oil in fuel tank is sent to atomizer by high-pressure oil pump in dynamical system, then fuel-oil atmozation finally exists through atomizer Combustion chamber of air cylinder burns and drives engine to do work.If the fuel Heating in fuel tank is too high, fuel oil stickiness is easily caused Step-down, and then cause the reduction of high-pressure oil pump output pressure, atomizer weakens to the atomizing effect of fuel oil, reduces the work of engine Efficiency.Under this state shown in Fig. 1, the two ends of inner tube 160 are individually connected with fuel tank and engine, are on the one hand convenient for Work is connected, on the other hand avoids and the fuel oil in fuel tank is heated into (existing fuel tank can generally set electrical heating) again, lead Cause engine operating efficiency reduction.Certainly, if can guarantee that, the amplitude that anti-icing fluid is heated to the fuel oil in fuel tank is smaller, also may be used So that inner tube 160 is stretched into fuel tank in the lump with the mozzle of part-the first 110 or outer tube 150 with anti-icing fluid.Engine works Shi Wendu is higher, engine work is impacted in order to avoid the heat of anti-icing fluid, more preferably as shown in figure 1, by inner tube 160 A part is stretched out from the second mozzle 130 again with engine to be connected.It should be noted that in inner tube 160 fuel oil flowing side Can be with identical to the flow direction with anti-icing fluid in outer tube 150, can also be different.In the present embodiment, using fuel oil in inner tube 160 The flow direction mode opposite with the flow direction of anti-icing fluid in outer tube 150 set, take full advantage of the heat of anti-icing fluid, it is right Fuel Heating in inner tube 160 faster, it is more stable, more fully, evenly.

Alternatively, the first mozzle 110, the import or export of anti-icing fluid installs flow control valve on the second mozzle 130, Working condition according to required for engine fuel adjusts the flow of anti-icing fluid.Flow control valve can be common manual control The flow control valve of valve or the operating temperature flow automatic regulation set according to engine fuel is either according to starting The flow control valve of the work viscosity flow automatic regulation of machine fuel oil setting.

By taking the concrete structure of the second mozzle 130 as an example, Fig. 2 refer to.Fig. 2 show the second mozzle 130 and outer tube State during 150 separation.Inner tube 160 is arranged with pipe cap 162, and pipe cap 162 is threadedly coupled with the second mozzle 130.Second water conservancy diversion Pipe 130 includes the second end 134 being threadedly coupled with the first end 132 of the clamping of outer tube 150, with pipe cap 162 and for importing hair 3rd end 136 of motivation anti-icing fluid.More preferably, the first seal washer (not shown) can be set in pipe cap 162, prevented Engine fluid seepage when pipe cap 162 is threadedly coupled with the second end 134.Wherein, in order to preferably be sealed to anti-icing fluid, The endoporus aperture of pipe cap 162 and the external diameter of inner tube 160 match, and for example both can be interference fit.

More preferably, can be in first end 132 in order to prevent anti-icing fluid from being oozed out from outer tube 150 with the access section of first end 132 Seepage-proofing ring 138 as shown in Figure 3 is set.Anti-icing fluid relative to outer tube 150 toward seepage-proofing ring 138 direction flowing when, seepage-proofing ring 138 The further flowing of anti-icing fluid can be stopped, the compactness of outer tube 150 and the access section of first end 132 is strengthened.In addition, Fig. 3 institutes The structure of the seepage-proofing ring 138 shown is also convenient for light, quick clamping outer tube 150 and first end 132.Certainly, of the present utility model In other embodiment, seepage-proofing ring 138 can also be set into other can realize the structure of antiseepage.For example, in 132 sets of first end If a circle rubber, when rubber and 150 clamping of outer tube, utilizes the elasticity possessed of rubber in itself so that rubber enters outer tube 150 After can be full of whole outer tube 150 so that between rubber and outer tube 150 be not present hole, prevent anti-icing fluid seepage.

The first gap 152 formed between inner tube 160 and outer tube 150 is also show in Fig. 2.3rd end 136, the first gap 152nd, the first mozzle 110 together form the first transfer passage of engine fluid.Further, inner tube 160 is located at the Part in one gap 152 can wind setting heat conductive filament (such as copper cash) as needed, strengthen heat-transfer effect.

The operation principle of thermal cycle pipeline 100 is：

Engine fluid is circulated in the first transfer passage interior circulation, and engine fuel, which enters in inner tube 160, to be flowed, due to Circulation, holohedral form heating of the engine fluid for inner tube 160 so that the engine fuel stickiness step-down in inner tube 160, Mobility improves, can be with the environment of normal work there is provided one to engine.Thermal source need not be additionally provided, merely with starting The heat that machine anti-icing fluid possesses in itself after cooling engine can reach the purpose of heated engine fuel oil.Engine fluid It is thermal-stable to engine fuel, lasting, uniform, and because both are not directly contacted with, the heating safety of engine fuel It is higher.

Embodiment 2

It refer to Fig. 4, the present embodiment provides a kind of thermal cycle pipeline 200, its thermal cycle pipeline 100 with embodiment 1 is big Cause is identical, and the difference of the two is that the middle external tube 210 of thermal cycle pipeline 200 of the present embodiment is different from the structure of the second mozzle 230.

It is only the part-structure schematic diagram of thermal cycle pipeline 200 shown in Fig. 4.One end of outer tube 210 sets baffle plate 212, gear Plate 212 is fixed on the end face of outer tube 210 by rotational pin 214 and buckle 216.Inner tube 160 is opened from first of indwelling on baffle plate 212 Mouth (not marked in figure) is passed through and stretched into outer tube 210；Second opening of the second mozzle 230 indwelling from baffle plate 212 is (in figure Do not mark) pass through and stretch into outer tube 210.Engine fluid is into and out by the second mozzle 230.It can certainly join The first seal washer is set at the first opening and the second opening according to embodiment 1, engine fluid seepage is prevented.

Embodiment 3

It refer to Fig. 5, the present embodiment provides a kind of thermal cycle pipeline 300, its thermal cycle pipeline 100 with embodiment 1 is big Cause is identical, and the difference of the two is in the thermal cycle pipeline 300 of the present embodiment also to include heating tube 310.

Heating tube 310 is provided with the 3rd mozzle 312, the 4th mozzle 314, pipe main body 316.Provided with use in pipe main body 316 In the petroleum pipeline 318 of conveying engine fuel, the tube wall (not marked in figure) of pipe main body 316 is provided with through hole 320.Petroleum pipeline 318 End is connected with pipe main body 316, and the tube chamber of petroleum pipeline 318 is connected with through hole 320, and the other end of petroleum pipeline 318 connects with inner tube 160 Connect.Fuel oil enters inner tube 160 by through hole 320 through petroleum pipeline 318.The second gap is formed between pipe main body 316 and petroleum pipeline 318 322, tube chamber (not marked in figure), the second gap 322, the tube chamber of the 4th mozzle 314 of the 3rd mozzle 312 (are not marked in figure Go out) it is sequentially communicated the second transfer passage (not marked in figure) to be formed for conveying engine fluid.

During using thermal cycle pipeline 300, pipe main body 316 is located at fuel tank internal (not shown).Anti-icing fluid flows through second The fuel oil in fuel tank can be heated during gap 322, compared to such as electrical heating of other mode of heatings, the heating process is safer Reliably.By heating tube 310 fuel tank internal is heated, it is to avoid air's contact is simultaneously condensed in fuel tank internal formation Water.Engine fuel wax deposition can not only be promoted by occurring condensed water in fuel tank, it is also possible to cause fuel tank internal gear to get rusty, into starting Engine is also resulted in after machine not start or rotary speed unstabilization.The thermal cycle pipeline 300 that the present embodiment is provided can just be avoided State the appearance of rough sledding.More preferably, it can select heating tube 310 being installed on tank bottoms, or be installed in tank bottoms Multiple heating tubes 310, " ground heating type " heating is realized to the fuel oil in fuel tank so that the fuel oil in fuel tank is heated evenly.Heat is followed Endless tube road 300 realizes the heating of pipeline (i.e. petroleum pipeline 318, inner tube 160) where from oil tank heating to fuel oil comprehensively, only relies on The heat of engine fluid ensures that the normal operating conditions of fuel oil.

3rd mozzle 312, the 4th mozzle 314 are connected with the first mozzle 110, the second mozzle 130 respectively, and it two Connection between two can be connected or by anti-icing fluid conveyance conduit with anti-icing fluid conveyance conduit again after being directly connected to Realization is indirectly connected with (i.e. four are directly connected to anti-icing fluid conveyance conduit).The present embodiment selects the latter, the 3rd mozzle 312nd, the 4th mozzle 314 is connected to form circulation canal with anti-icing fluid conveyance conduit；First mozzle 110, the second mozzle 130 It is connected to form another circulation canal with anti-icing fluid conveyance conduit.Independent circulation canal is conducive to the quick heating to fuel oil.

, can be close in through hole 320 and the setting second of the junction of petroleum pipeline 318 to avoid fuel oil from entering in the second gap 322 Seal washer (not shown).

Preferably, pipe main body 316 is provided with fixed plate 324, and the 3rd mozzle 312, the 4th mozzle 314 pass through fixed plate 324 are connected with the second gap 322, and petroleum pipeline 318 is connected through fixed plate 324 with inner tube 160.The setting of fixed plate 324 ensures Anti-icing fluid and fuel oil have enough separated spaces, it is to avoid fuel oil and anti-icing fluid mixing.In order to more stably by pipe main body 316 It is installed on fuel tank, multiple fixing holes 326 can be set in fixed plate 324 and consolidate pipe main body 316 by external pieces such as rivets It is fixed.

Embodiment 4

The present embodiment provides a kind of engine fuel defroster, specially defroster for diesel oil.Engine fuel is antifreeze Device includes thermal cycle pipeline 100 as described in Example 1.Fig. 1 is refer to, the two ends of inner tube 160 (are schemed with fuel tank respectively Not shown in) and the connection of engine (not shown), form the flow channel that engine fuel enters engine from fuel tank.Will Warm wind pipeline where engine fluid is connected with the first mozzle 110 and the second mozzle 130, and engine fluid is from warm Wind pipeline (i.e. anti-icing fluid conveyance conduit) flows out to warm wind pipeline, shape into the first mozzle 110, again from the second mozzle 130 The circulating-heating passage of coupled engines fuel oil.

The operation principle of engine fuel defroster is：

Fuel oil in fuel tank is sent to atomizer by high-pressure oil pump, through atomizer by fuel-oil atmozation, then in cylinder combustion Burn and drive engine to do work in room.There is certain heat after engine fluid cooling engine, anti-icing fluid is led from first Flow tube 110 is flowed into, then is flowed out from the second mozzle 130, and the fuel oil being during which brought into through high-pressure oil pump in inner tube 160 is heated, stream Dynamic property enhancing, and enter atomizer progress normal work.Warm wind pipeline is circulating line, therefore the first mozzle 110 and second The first transfer passage that mozzle 130 and outer tube 150 are constituted realizes circulation to fuel oil, continuous heating.

Thermal cycle pipeline 100, the thermal cycle pipeline 200 of the utility model embodiment offer may be incorporated for carrying engine The equipment of Fuel Delivery System, such as automobile, steamer, aircraft etc..Based on embodiment 1 and embodiment 2, the present embodiment is also provided A kind of engine fuel induction system with thermal cycle pipeline 100 or thermal cycle pipeline 200 or thermal cycle pipeline 300.

In summary, the thermal cycle pipeline 100 and thermal cycle pipeline 200 that the utility model embodiment is provided mainly utilize hair The engine fluid that motivation fuel oil can be configured is heated to fuel oil, isothermal holding, prevent engine fuel temperature compared with Mobility reduction even wax deposition, influences it normally to use under conditions of low.Fuel oil circulates in the tube chamber of inner tube 160, anti-icing fluid Circulated in the first transfer passage, fuel oil and anti-icing fluid are separated completely, it is ensured that the security of fuel Heating, anti-icing fluid exists Fuel oil external rings also cause the heating of fuel oil evenly to stablize around circulation.

Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.

Claims (10)

1. a kind of thermal cycle pipeline, suitable for being heated using engine fluid to engine fuel, it is characterised in that described Thermal cycle pipeline includes the first mozzle, the second mozzle, outer tube and the inner tube for conveying the engine fuel, described Inner pipe portion is all sheathed in the outer tube, and the first gap is formed between the outer tube and said inner tube；Described first Mozzle, second mozzle are all connected to said inner tube, by the tube chamber of first mozzle, first gap to institute The tube chamber for stating the second mozzle is sequentially communicated the first transfer passage to be formed for conveying the engine fluid.

2. thermal cycle pipeline according to claim 1, it is characterised in that first mozzle and second mozzle Include the second end for being connected with the first end of the outer tube clamping, with said inner tube and for importing the engine antif 3rd end of liquid.

3. thermal cycle pipeline according to claim 2, it is characterised in that said inner tube and second end are close by first Seal washer is connected.

4. thermal cycle pipeline according to claim 3, it is characterised in that pipe cap, the pipe cap are arranged with outside said inner tube It is threadedly coupled with second end, first seal washer is in the pipe cap.

5. thermal cycle pipeline according to claim 1, it is characterised in that the thermal cycle pipeline also includes and said inner tube The heating tube of one end connection, the heating tube is provided with the 3rd mozzle, the 4th mozzle, pipe main body；It is provided with the pipe main body Petroleum pipeline for conveying the engine fuel, the tube wall of the pipe main body is provided with through hole, the oil transportation pipe end with it is described Pipe main body is connected, and the petroleum pipeline tube chamber is connected with the through hole, and the petroleum pipeline other end is connected with said inner tube；It is described Form the second gap between pipe main body and the petroleum pipeline, the tube chamber of the 3rd mozzle, second gap, the described 4th The tube chamber of mozzle is sequentially communicated the second transfer passage to be formed for conveying the engine fluid.

6. thermal cycle pipeline according to claim 5, it is characterised in that the through hole is provided with the petroleum pipeline junction Second seal washer.

7. the thermal cycle pipeline according to claim 5 or 6, it is characterised in that the pipe main body is provided with fixed plate, described the Three mozzles, the 4th mozzle are connected through the fixed plate with second gap, and the petroleum pipeline passes through described solid Fixed board is connected with said inner tube.

8. thermal cycle pipeline according to claim 7, it is characterised in that the fixed plate is used to fix described provided with multiple The fixing hole of heating tube.

9. a kind of engine fuel defroster, it is characterised in that including the thermal cycle as described in any one of claim 1~8 Pipeline, the two ends of said inner tube are respectively connecting to fuel tank and engine, and said inner tube is configurable in the fuel tank Fuel oil is delivered to the pipeline of the engine, first mozzle and second mozzle with for conveying described start The anti-icing fluid conveyance conduit connection of machine anti-icing fluid.

10. a kind of engine fuel induction system, it is characterised in that including the thermal cycle as described in any one of claim 1~8 Pipeline.