CN114458474A - Composite fuel heater - Google Patents
Composite fuel heater Download PDFInfo
- Publication number
- CN114458474A CN114458474A CN202210231343.3A CN202210231343A CN114458474A CN 114458474 A CN114458474 A CN 114458474A CN 202210231343 A CN202210231343 A CN 202210231343A CN 114458474 A CN114458474 A CN 114458474A
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- China
- Prior art keywords
- oil
- heating
- composite fuel
- electric heating
- heating rod
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- 239000002131 composite material Substances 0.000 title claims abstract description 58
- 239000000446 fuel Substances 0.000 title claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 103
- 239000003921 oil Substances 0.000 claims abstract description 91
- 238000005485 electric heating Methods 0.000 claims abstract description 60
- 239000000295 fuel oil Substances 0.000 claims abstract description 47
- 239000002918 waste heat Substances 0.000 claims abstract description 18
- 150000001875 compounds Chemical class 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 7
- 238000013459 approach Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 7
- 239000003350 kerosene Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 239000003502 gasoline Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Images
Classifications
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- 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
- F02M31/12—Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture for heating electrically
- F02M31/125—Fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G5/00—Profiting from waste heat of combustion engines, not otherwise provided for
- F02G5/02—Profiting from waste heat of exhaust gases
-
- 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
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
- F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
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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
- 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
Landscapes
- 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)
Abstract
The invention relates to a composite fuel heater, and belongs to the technical field of aircraft engines. This compound fuel oil heater includes heating member and electrical heating stick, and the inside of heating member is provided with the oil duct, and the heating member is provided with the waste heat heating hole that is used for wearing to establish the blast pipe, and partly and the waste heat heating hole of oil duct close on, and the electrical heating stick inserts in the oil duct. The composite fuel oil heater provided by the invention has two heating modes of electric heating and exhaust heating, and can heat the composite fuel oil by using the electric heating rod when an engine is cooled and started, so that the engine is easier to start, the composite fuel oil can be heated by using the waste heat of the exhaust pipe when the engine normally runs, the electric heating rod can be started when the exhaust heating strength does not meet the requirement, the flexible control on the fuel oil temperature can be realized, the power consumption can be effectively reduced, and meanwhile, the composite fuel oil heater can heat the intake air with certain strength.
Description
Technical Field
The invention belongs to the technical field of aircraft engines, and particularly relates to a composite fuel heater.
Background
Aviation kerosene has the characteristics of higher flash point and difficult volatilization, is difficult to ignite when meeting open fire at low temperature, is easy to store and transport, and in recent years, the research on piston aviation engines burning aviation kerosene is highly valued in the fields of domestic and foreign unmanned aerial vehicles and military use. Compared with gasoline, aviation kerosene has a higher flash point, is not easy to spontaneously combust when meeting open fire at normal temperature, has a lower boiling point, is easy to boil, and is easy to block an oil way by gasoline steam, so that the air engine is stopped, and the safety of using kerosene is higher. Although the aviation kerosene has the advantages, the characteristic of difficult volatilization of the aviation kerosene also causes difficulty in quickly forming homogeneous and flammable mixed gas like gasoline, and the difficulty of cold start of an aviation kerosene engine is directly higher than that of a gasoline engine.
Disclosure of Invention
In view of this, an object of the embodiments of the present invention is to provide a composite fuel oil heater, which has two heating modes, namely, electrical heating and exhaust heating, and can heat composite fuel oil by using an electrical heating rod when an engine is cooled and started, so that the engine is easier to start, and can heat composite fuel oil by using waste heat of an exhaust pipe when the engine is normally operated, thereby effectively reducing power consumption.
The embodiment of the invention is realized by the following steps:
the embodiment of the invention provides a composite fuel oil heater which is used for an aircraft engine and comprises a heating body and an electric heating rod, wherein an oil duct is arranged inside the heating body, a waste heat heating hole for penetrating an exhaust pipe is formed in the heating body, one part of the oil duct is close to the waste heat heating hole, and the electric heating rod is inserted into the oil duct.
As an alternative scheme of the above embodiment, the heating body is flat, the middle part of the heating body is provided with an air inlet, and both ends of the heating body are respectively provided with the waste heat heating holes, the oil ducts include two first oil ducts and two second oil ducts which are alternately communicated, the two first oil ducts are respectively close to the two waste heat heating holes, and the electric heating rod is inserted into the second oil ducts.
As an alternative to the above-described embodiment, the first oil passage extends zigzag, and the second oil passage extends in a straight line.
As an alternative to the above embodiment, a plurality of oil outlets are provided on the second oil passage at the tip end.
As an alternative of the above embodiment, the composite fuel oil heater further includes a temperature sensor, the temperature sensor is close to the oil outlet of the oil passage, and the temperature sensor is configured to detect the temperature of the composite fuel oil in the oil passage and start the electric heating rod when the temperature of the composite fuel oil is lower than a preset temperature threshold.
As an alternative of the above embodiment, the composite fuel oil heater further comprises an anti-loosening assembly, the electric heating rod is in threaded engagement with the heating body, the anti-loosening assembly comprises a first fixing piece, a moving piece and a second fixing piece, the first fixing piece and the moving piece are all sleeved on the electric heating rod, the moving piece and the electric heating rod can synchronously rotate and move relatively in the axial direction, the first fixing piece and the moving piece are both provided with annular magnets, opposite side magnetic poles of the first fixing piece and the moving piece are the same, the second fixing piece is fixed on the heating body, and a plurality of anti-reverse teeth which correspond to each other and are distributed annularly are arranged on the opposite side of the second fixing piece and the moving piece.
As an alternative of the above embodiment, the electric heating rod is provided with at least three sliding grooves, the sliding grooves extend along the axial direction of the electric heating rod, the end portions of two adjacent sliding grooves are transited through an arc-shaped surface, and the inner surface of the movable member is provided with at least three spherical protrusions matched with the sliding grooves.
As an alternative to the above embodiment, the width of the sliding groove is gradually reduced so that the spherical protrusion can be gradually clamped by the sliding groove during approaching of the first fixing member.
As an alternative of the above embodiment, the electric heating rod is in a stepped shaft shape and is divided into a heating portion, a threaded portion, an anti-reverse portion and a bolt head, the diameter of the heating portion is gradually increased, the heating portion is located in the oil duct and used for heating the composite fuel oil, the threaded portion is in threaded connection with the oil duct, a sealing gasket is arranged between the anti-reverse portion and the heating body, and the sliding groove is arranged on the anti-reverse portion.
As an alternative to the above embodiment, the first stationary member and the movable member each include a plastic portion and a ring magnet disposed within the plastic portion, the plastic portions at opposite sides of the first stationary member and the movable member being open.
The invention has the beneficial effects that:
the composite fuel oil heater provided by the invention has two heating modes of electric heating and exhaust heating, and can heat the composite fuel oil by using the electric heating rod when an engine is cooled and started, so that the engine is easier to start, the composite fuel oil can be heated by using the waste heat of the exhaust pipe when the engine normally runs, the electric heating rod can be started when the exhaust heating strength does not meet the requirement, the flexible control on the fuel oil temperature can be realized, the power consumption can be effectively reduced, and meanwhile, the composite fuel oil heater can heat the intake air with certain strength.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts. The above and other objects, features and advantages of the present invention will become more apparent from the accompanying drawings. Like reference numerals refer to like parts throughout the drawings. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention.
Fig. 1 is a first structural schematic diagram of a composite fuel oil heater according to a first embodiment of the present invention;
fig. 2 is a structural schematic diagram ii of a composite fuel oil heater according to a first embodiment of the present invention;
fig. 3 is a third schematic structural diagram of a composite fuel oil heater according to a first embodiment of the present invention;
fig. 4 is a fourth schematic structural diagram of the composite fuel oil heater according to the first embodiment of the present invention;
FIG. 5 is a cross-sectional view A-A of FIG. 4;
fig. 6 is a schematic structural view of a hybrid fuel heater according to a second embodiment of the present invention;
FIG. 7 is an enlarged view of part A of FIG. 6;
fig. 8 is a schematic structural diagram of a first fixing element according to a second embodiment of the present invention;
FIG. 9 is a first schematic structural view of a movable member according to a second embodiment of the present invention;
FIG. 10 is a second schematic structural view of a moveable member according to a second embodiment of the present invention;
FIG. 11 is a schematic structural view of a second fixing element according to a second embodiment of the present invention;
FIG. 12 is a first expanded view of the engagement between the spherical protrusion and the sliding groove according to the second embodiment of the present invention;
FIG. 13 is a second expanded view of the fitting relationship between the spherical protrusions and the sliding grooves according to the second embodiment of the present invention;
fig. 14 is a schematic view of a matching relationship between the movable member and the second fixed member according to the second embodiment of the present invention.
Icon:
10-a composite fuel heater;
11-a heating body; 12-an electrical heating rod; 13-a anti-loosening assembly;
110-oil duct; 111-waste heat heating holes; 112-an air inlet; 113-an oil inlet; 114-an oil outlet; 115-a temperature sensor;
120-a sealing gasket; 121-a heating part; 122-a threaded portion; 123-anti-reverse rotation part; 124-bolt head; 125-chute; 126-an arc-shaped surface;
130-a first fixture; 131-a movable member; 132-a second mount; 133-anti-reverse teeth; 134-spherical protrusions; 135-a plastic part; 136-ring magnet.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
First embodiment
Referring to fig. 1 to 4, a first embodiment of the present invention provides a composite fuel oil heater 10, where the composite fuel oil heater 10 is mainly used for piston aircraft engines, and may be applied to unmanned aerial vehicles and the like.
The composite fuel oil heater 10 is mainly composed of a heating body 11, an electric heating rod 12 and a temperature sensor 115.
The shape and structure of the heating body 11 are not limited, in this embodiment, the heating body 11 is flat, the thickness of the heating body 11 can be selected according to the requirement, the heating body 11 and the engine can be fixed by bolt connection, and the heating body 11 can be made of a metal material capable of conducting heat.
Referring to fig. 3, the heating body 11 has an air inlet 112 and a waste heat heating hole 111, the air inlet 112 is used for passing an air inlet pipe, and the waste heat heating hole 111 is sleeved on the exhaust pipe.
The shape and position of the air inlet 112 are matched with those of an air inlet pipe, in the embodiment, the air inlet 112 is positioned in the middle of the heating body 11, the cross section of the air inlet 112 is rectangular, and one end of the air inlet 112 is provided with a guide slope surface.
The number of the residual heat heating holes 111 is not limited, in this embodiment, the residual heat heating holes 111 are respectively disposed at two ends of the heating body 11, the residual heat heating holes 111 are circular holes, the diameters of the residual heat heating holes 111 are set according to the diameter of the exhaust pipe, and bolts and the like for connecting with the engine may be disposed around the residual heat heating holes 111.
Referring to fig. 5, an oil passage 110 is disposed inside the heating body 11, the oil passage 110 has an oil inlet 113 and an oil outlet 114, and the number of the oil outlets 114 is not limited, in this embodiment, the number of the oil inlets 113 is one, and the number of the oil outlets 114 is three.
In the present embodiment, the oil passages 110 include two first oil passages and two second oil passages, the diameter of the second oil passage may be larger than that of the first oil passage, and the first oil passages and the second oil passages are alternately communicated, that is, the oil passages 110 are divided into a first oil passage, a second oil passage, a first oil passage and a second oil passage which are sequentially communicated. The four oil passages 110 may be disposed around the air inlet 112 in order to reduce the volume of the heating body 11 as much as possible.
The oil inlet 113 is located at the beginning end of the initial first oil passage, the oil outlet 114 is located at the second oil passage at the tail end, and the structure of the oil inlet 113 and the oil outlet 114 can refer to the prior art.
The two first oil ducts are respectively adjacent to the two waste heat heating holes 111, and the length of the first oil ducts can be increased in a zigzag extending mode, so that the composite fuel oil in the oil ducts 110 is sufficiently heated.
The second oil duct extends along a straight line, one end of the second oil duct can be communicated with the outside, the electric heating rod 12 is inserted into the second oil duct, and a sealing gasket 120 can be arranged between the electric heating rod 12 and the heating body 11.
The structure and principle of the electric heating rod 12 can refer to the prior art, that is, the rod-shaped heatable body 11 is adopted, and the heating mode is electric heating.
The heating body 11 is processed in a non-limited manner, for example, the heating body 11 is processed by injection molding, or the heating body 11 is divided into two parts split from the middle and separately produced, and then the two parts are welded to form an integral structure.
The temperature of the composite fuel in oil channel 110 can be detected and controlled by temperature sensor 115, temperature sensor 115 is close to oil outlet 114 of oil channel 110, in this embodiment, temperature sensor 115 is located at the end of oil channel 110, temperature sensor 115 can detect the temperature of the composite fuel in oil channel 110 and transmit the temperature information to the control system, and when the temperature of the composite fuel is lower than a preset temperature threshold, the control system can start electric heating rod 12 to perform auxiliary heating on the composite fuel, especially when the engine is started and the exhaust heating intensity is insufficient.
The working mode of the composite fuel oil heater 10 provided by the invention is as follows:
injecting the composite fuel oil into the oil passage 110 from the oil inlet 113;
starting the electric heating rod 12, and heating the composite fuel oil in the second oil duct by the heat generated by the electric heating rod 12 to enable the temperature of the composite fuel oil to reach a preset threshold value;
the heated composite fuel oil enters the engine through the oil outlet 114;
starting the engine;
the exhaust pipe discharges tail gas, the tail gas has higher temperature, the heat of the tail gas is transferred to the heating body 11 through the exhaust pipe, the heating body 11 heats the composite fuel oil in the first oil duct and the second oil duct, at the moment, the heating body 11 can also heat the air inlet pipe at the air inlet 112, so that the gas entering the engine is heated, and the waste heat of the tail gas is effectively utilized;
when the intensity of the heating body 11 is insufficient when the heating body is heated by using the tail gas, and the fuel temperature in the oil duct 110 is lower than the preset temperature threshold value, the control system controls the electric heating rod 12 to start, so that the composite fuel in the oil duct 110 is heated in an auxiliary manner, the composite fuel temperature in the oil duct 110 is controlled in a proper range all the time, and the power consumption can be effectively reduced.
Second embodiment
Referring to fig. 6, a second embodiment of the present invention provides a composite fuel oil heater 10, which is improved over the first embodiment in that:
generally speaking, adopt between electric heating rod 12 and the heating body 11 to dismantle the mode of being connected and be connected, for example, pass through threaded connection between electric heating rod 12 and the heating body 11, because compound fuel oil heater 10 is nearer apart from the engine, and vibrations are great, lead to electric heating rod 12 etc. to become flexible easily, in order to improve this problem, the present embodiment provides following scheme: the composite fuel oil heater 10 further comprises an anti-loosening assembly 13, and the anti-loosening assembly 13 can prevent the electric heating rod 12 from loosening, so that the stability of the composite fuel oil heater 10 is ensured, and the performance is more reliable.
Referring to fig. 7, the electric heating rod 12 has a stepped shaft shape from one end to the other end, and the electric heating rod 12 includes a heating portion 121, a screw portion 122, an anti-reverse portion 123, and a bolt head 124, and diameters of the respective portions are sequentially increased in this direction.
The heating portion 121 is located in the second oil passage, and the heating portion 121 can generate heat and heat the composite fuel oil, and the heating portion 121 has a long length in order to sufficiently heat the composite fuel oil in the second oil passage.
The thread part 122 is in threaded connection with the oil duct 110, a sealing gasket 120 is arranged between the anti-reverse part 123 and the heating body 11, and the sealing gasket 120 can prevent the composite fuel oil from flowing out from a gap between the electric heating rod 12 and the heating body 11.
As shown in fig. 8 to 11, the anti-loosening element 13 includes a first fixing element 130, a movable element 131 and a second fixing element 132, the first fixing element 130, the movable element 131 and the second fixing element 132 are all annular and are sleeved on the electric heating rod 12, and the movable element 131 is located between the first fixing element 130 and the second fixing element 132.
First stationary member 130 and moveable member 131 include a plastic portion 135 and a ring magnet 136, with ring magnet 136 disposed within plastic portion 135 and plastic portion 135 open at opposite sides of first stationary member 130 and moveable member 131. The ring magnet 136 is covered by the plastic portion 135, so that the ring magnet 136 is prevented from being directly attached to the heating body 11 or the electric heating rod 12 as much as possible, and the movement resistance of the first fixing member 130 and the movable member 131 is ensured to be small.
The first fixing member 130 may or may not be fixedly connected to the electric heating rod 12.
The movable member 131 and the electric heating rod 12 can rotate synchronously and move relatively in the axial direction, and in this embodiment, the following connection modes can be adopted, but not limited to: referring to fig. 12 and 13, the electric heating rod 12 is provided with at least three sliding grooves 125, and the sliding grooves 125 are disposed on the anti-reverse portion 123.
The sliding groove 125 extends along the axial direction of the electric heating rod 12, and the inner surface of the movable member 131 is provided with at least three spherical protrusions 134 matching with the sliding groove 125.
The sliding slots 125 have a first end and a second end, the first end is far away from the bolt head 124 relative to the second end, and the first ends of two adjacent sliding slots 125 are transited by an arc-shaped surface 126, and the arc-shaped surface 126 can ensure that the spherical protrusion 134 can smoothly enter the sliding slots 125.
In the direction from the first end to the second end, the width of the sliding groove 125 gradually decreases (the width changes slowly), the width of the first half portion of the sliding groove 125 is larger than the width of the spherical protrusion 134, that is, the first half portion cannot clamp the spherical protrusion 134 (see fig. 12), the width of the second half portion of the sliding groove 125 is smaller than the width of the spherical protrusion 134, the second half portion can clamp the spherical protrusion 134, and the spherical protrusion 134 can be gradually clamped by the sliding groove 125 in the process of approaching the first fixing member 130 (see fig. 13).
When the electric heating rod 12 is completely screwed down, the spherical protrusion 134 is not clamped by the sliding groove 125, at this time, the movable member 131 can still move in the axial direction, and when the movable member 131 is required to be separated from the second fixing member 132, the movable member 131 only needs to be pulled backwards, and the spherical protrusion 134 is clamped by the sliding groove 125, so that the bolt head 124 can be screwed, and the operation is simple and convenient.
Opposite sides of the first fixed member 130 and the movable member 131 have the same magnetic polarity, and the two have a repulsive force, which can push the movable member 131 to move toward the second fixed member 132.
Referring to fig. 14, the second fixing element 132 is fixed to the heating body 11, and opposite sides of the second fixing element 132 and the movable element 131 are provided with corresponding anti-reverse teeth 133, in this embodiment, opposite sides of the second fixing element 132 and the movable element 131 both have annular portions, the annular portions are annular around a center line of the electric heating rod 12, the annular portions are provided with a plurality of anti-reverse teeth 133, the anti-reverse teeth 133 are wedge-shaped teeth, and the two annular portions are matched with each other, so that the second fixing element 132 and the movable element 131 can be allowed to rotate in one direction.
It should be noted that when the electric heating rod 12 is screwed in place, the moving distance of the movable member 131 in the axial direction needs to be greater than the height of the anti-reverse tooth 133, that is, the movable member 131 can still move until the movable member 131 is disengaged from the anti-reverse tooth 133 of the second fixed member 132.
The anti-loosening assembly 13 works as follows:
when the electric heating rod 12 needs to be installed, the second fixing member 132 is first fixed to the heating body 11, and the first fixing member 130 and the movable member 131 are sleeved on the electric heating rod 12;
the electric heating rod 12 is inserted into the second oil passage until the thread part 122 reaches the thread of the heating body 11;
the bolt head 124 is screwed, in the process, the first fixed piece 130 and the movable piece 131 repel each other, the movable piece 131 and the second fixed piece 132 are far away from each other, and the anti-reverse teeth 133 of the two pieces are butted;
the spherical projection 134 enters the sliding groove 125 along the arc-shaped surface 126, so that the movable piece 131 can rotate synchronously with the electric heating rod 12 and the movable piece 131 and the electric heating rod 12 can move relatively in the axial direction;
the bolt head 124 is screwed continuously, the electric heating rod 12 drives the moving part 131 to rotate, the anti-reverse tooth 133 does not influence the rotation of the moving part 131 until the electric heating rod 12 is screwed in place, and at the moment, the sealing gasket 120 is clamped between the anti-reverse part 123 and the heating body 11.
In this state, due to the existence of the repulsive force of the ring magnet 136, the movable member 131 can only abut against the second fixed member 132, a gap exists between the movable member 131 and the first fixed member 130, the movable member 131 can move axially in the gap, and since the anti-reverse tooth 133 can only move the movable member 131 to rotate in one direction, the movable member 131 cannot rotate in the reverse direction, thereby preventing the electrical heating rod 12 from rotating and loosening.
When the electric heating rod 12 needs to be disassembled, the movable piece 131 is pulled towards the first fixing piece 130, so that the spherical protrusion 134 is clamped by the sliding groove 125, and the movable piece 131 is separated from the anti-reverse tooth 133 of the second fixing piece 132;
the bolt head 124 is reversely screwed until the screw thread part 122 is separated from the screw thread of the heating body 11, and then the electric heating rod 12 is drawn out, so that the electric heating rod 12 can be disassembled.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a compound fuel heater for aeroengine, its characterized in that, compound fuel heater includes heating member and electric heating rod, the inside of heating member is provided with the oil duct, the heating member is provided with the waste heat heating hole that is used for wearing to establish the blast pipe, partly with the waste heat heating hole closes on, electric heating rod inserts in the oil duct.
2. The composite fuel oil heater according to claim 1, wherein the heating body is flat, an air inlet is formed in the middle of the heating body, the waste heat heating holes are formed in the two ends of the heating body, the oil passages include two first oil passages and two second oil passages which are alternately communicated, the two first oil passages are adjacent to the two waste heat heating holes, and the electric heating rod is inserted into the second oil passages.
3. The composite fuel heater of claim 2, wherein the first oil passage extends in a meandering manner and the second oil passage extends in a straight line.
4. The composite fuel heater of claim 2, wherein the second oil passage at the distal end is provided with a plurality of oil outlets.
5. The hybrid fuel heater of claim 1, further comprising a temperature sensor proximate the oil outlet of the oil gallery, the temperature sensor configured to detect the temperature of the hybrid fuel within the oil gallery and activate the electrical heating rod when the temperature of the hybrid fuel is below a predetermined temperature threshold.
6. The composite fuel oil heater according to any one of claims 1 to 5, further comprising an anti-loosening assembly, wherein the electric heating rod is in threaded engagement with the heating body, the anti-loosening assembly comprises a first fixing member, a moving member and a second fixing member, the first fixing member and the moving member are both sleeved on the electric heating rod, the moving member and the electric heating rod can synchronously rotate and axially move relatively, the first fixing member and the moving member are both provided with annular magnets, opposite side magnetic poles of the first fixing member and the moving member are the same, the second fixing member is fixed on the heating body, and a plurality of anti-reverse teeth which are distributed in an annular shape and correspond to opposite sides of the second fixing member and the moving member are arranged on opposite sides of the second fixing member and the moving member.
7. The composite fuel oil heater according to claim 6, wherein the electric heating rod is provided with at least three sliding grooves, the sliding grooves extend along the axial direction of the electric heating rod, the end portions of two adjacent sliding grooves are transited through an arc-shaped surface, and the inner surface of the movable member is provided with at least three spherical protrusions matched with the sliding grooves.
8. The composite fuel heater of claim 7, wherein the width of the channel is tapered to enable the knob to be progressively clamped by the channel as it approaches the first mount.
9. The composite fuel oil heater according to claim 7, wherein the electric heating rod is stepped shaft-shaped and is divided into a heating portion, a threaded portion, an anti-reverse portion and a bolt head, the diameter of the heating portion is gradually increased, the heating portion is located in the oil passage and is used for heating the composite fuel oil, the threaded portion is in threaded connection with the oil passage, a sealing gasket is arranged between the anti-reverse portion and the heating body, and the sliding groove is arranged on the anti-reverse portion.
10. The composite fuel oil heater of claim 6, wherein the first stationary member and the movable member each include a plastic portion and a ring magnet disposed within the plastic portion, the plastic portions at opposite sides of the first stationary member and the movable member being open.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210231343.3A CN114458474B (en) | 2022-03-09 | 2022-03-09 | Composite fuel heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210231343.3A CN114458474B (en) | 2022-03-09 | 2022-03-09 | Composite fuel heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114458474A true CN114458474A (en) | 2022-05-10 |
| CN114458474B CN114458474B (en) | 2024-02-20 |
Family
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| CN202210231343.3A Active CN114458474B (en) | 2022-03-09 | 2022-03-09 | Composite fuel heater |
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Citations (10)
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|---|---|---|---|---|
| US4517926A (en) * | 1982-04-19 | 1985-05-21 | Optimizer, Limited | Device for improving fuel efficiency and method of use therefor |
| US4984555A (en) * | 1989-07-14 | 1991-01-15 | Huang Kuo Liang | Diesel engine fuel pipeline heating device |
| DE4323583A1 (en) * | 1993-07-14 | 1995-01-19 | Mueller Hermann Frank | Diesel preheater for engines |
| CN204024865U (en) * | 2014-08-28 | 2014-12-17 | 瑞安市郑源机械电器有限公司 | A kind of oil heater of diesel engine |
| CN105649832A (en) * | 2016-03-04 | 2016-06-08 | 联合汽车电子有限公司 | Fuel oil heating structure |
| WO2018114118A1 (en) * | 2016-12-23 | 2018-06-28 | Robert Bosch Gmbh | Fuel heater and method for the production thereof |
| CN109404634A (en) * | 2017-08-18 | 2019-03-01 | 广东美的制冷设备有限公司 | Anti-dismounted tube joint assembly and air conditioner |
| CN111677614A (en) * | 2019-03-11 | 2020-09-18 | 郑州宇通客车股份有限公司 | Fuel heater inlet air preheating system and vehicle |
| CN112845378A (en) * | 2021-02-20 | 2021-05-28 | 安徽一诺青春工业设计有限公司灵璧分公司 | Device for manufacturing high-end equipment and utilizing pressure to wash for clamping |
| CN214900148U (en) * | 2021-06-30 | 2021-11-26 | 郑州祥和电力设计有限公司 | Power cable intermediate head |
-
2022
- 2022-03-09 CN CN202210231343.3A patent/CN114458474B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4517926A (en) * | 1982-04-19 | 1985-05-21 | Optimizer, Limited | Device for improving fuel efficiency and method of use therefor |
| US4984555A (en) * | 1989-07-14 | 1991-01-15 | Huang Kuo Liang | Diesel engine fuel pipeline heating device |
| DE4323583A1 (en) * | 1993-07-14 | 1995-01-19 | Mueller Hermann Frank | Diesel preheater for engines |
| CN204024865U (en) * | 2014-08-28 | 2014-12-17 | 瑞安市郑源机械电器有限公司 | A kind of oil heater of diesel engine |
| CN105649832A (en) * | 2016-03-04 | 2016-06-08 | 联合汽车电子有限公司 | Fuel oil heating structure |
| WO2018114118A1 (en) * | 2016-12-23 | 2018-06-28 | Robert Bosch Gmbh | Fuel heater and method for the production thereof |
| CN109404634A (en) * | 2017-08-18 | 2019-03-01 | 广东美的制冷设备有限公司 | Anti-dismounted tube joint assembly and air conditioner |
| CN111677614A (en) * | 2019-03-11 | 2020-09-18 | 郑州宇通客车股份有限公司 | Fuel heater inlet air preheating system and vehicle |
| CN112845378A (en) * | 2021-02-20 | 2021-05-28 | 安徽一诺青春工业设计有限公司灵璧分公司 | Device for manufacturing high-end equipment and utilizing pressure to wash for clamping |
| CN214900148U (en) * | 2021-06-30 | 2021-11-26 | 郑州祥和电力设计有限公司 | Power cable intermediate head |
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| CN114458474B (en) | 2024-02-20 |
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