CN220081546U - Igniter for small turbine engine - Google Patents
Igniter for small turbine engine Download PDFInfo
- Publication number
- CN220081546U CN220081546U CN202321455216.8U CN202321455216U CN220081546U CN 220081546 U CN220081546 U CN 220081546U CN 202321455216 U CN202321455216 U CN 202321455216U CN 220081546 U CN220081546 U CN 220081546U
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- China
- Prior art keywords
- igniter
- oil inlet
- oil
- boss
- wall
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- 239000003921 oil Substances 0.000 claims abstract description 97
- 238000005485 electric heating Methods 0.000 claims abstract description 29
- 239000000446 fuel Substances 0.000 claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 26
- 239000000295 fuel oil Substances 0.000 claims abstract description 6
- 238000010285 flame spraying Methods 0.000 claims description 14
- 238000005452 bending Methods 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical group [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract description 3
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 239000007789 gas Substances 0.000 description 7
- 239000003350 kerosene Substances 0.000 description 6
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 5
- 239000003063 flame retardant Substances 0.000 description 5
- 238000000889 atomisation Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Abstract
The utility model relates to an igniter for a small turbine engine, which comprises an igniter shell, wherein an oil inlet is formed in the oil inlet end of the igniter shell, the oil inlet is used for allowing fuel to enter, an oil inlet pipe is arranged on the side wall of the igniter shell in the axial direction, and one end of the oil inlet pipe is communicated with the oil inlet; the electric heating head is used for igniting oil gas injected by the oil inlet pipe; the electric heating head is connected with a cable, and the cable penetrates into the igniter shell to be connected with the heating end; an insulating layer is filled between the circumferential inner wall of the igniter housing and the circumferential outer wall of the cable. According to the igniter for the small turbine engine, the oil inlet pipe supplies oil and injects oil to the igniter body according to the given flow through the control system, the electric heating head guides the fuel oil to be heated at the heating end of the ceramic electric heating head to become an oil-gas mixture, then the oil gas flowing to the ignition part of the ceramic electric heating head is ignited at high temperature, and flame is injected into the appointed position of the combustion chamber after ignition, so that ignition in the starting process of the engine is realized.
Description
Technical Field
The utility model relates to the technical field of igniters, in particular to an igniter for a small turbine engine.
Background
The small turbojet engine for the target aircraft has the characteristics of low cost, small volume, light weight and large thrust-weight ratio. For low cost reasons, there is typically no special fuel atomization device, and an evaporation tube or oil slinger is used for fuel supply.
When the engine speed is lower, the fuel atomization effect is poor, the method of generating high voltage electricity by using the conventional high voltage pulsation ignition device is very difficult to directly ignite kerosene, and if special ignition fuel is needed to ignite the kerosene, a special gas circuit is needed to be designed, and the application occasion is limited. It is therefore necessary to design a kerosene igniter of a special structure, gasify kerosene in the igniter and ignite the kerosene vapor at the outlet to form a torch.
Disclosure of Invention
Therefore, the technical problem to be solved by the utility model is to solve the problem that the small turbojet engine for the target aircraft cannot effectively ignite at a low rotating speed in the prior art.
In order to solve the technical problems, the utility model provides an igniter for a small turbine engine, which comprises an igniter shell, wherein two ends of the igniter shell in the length direction are respectively provided with an oil inlet and an ignition end, the oil inlet is provided with an oil inlet, the oil inlet is used for fuel to enter, the side wall of the igniter shell in the axial direction is provided with an oil inlet pipe, and one end of the oil inlet pipe is communicated with the oil inlet; the electric heating head is arranged in the ignition end in the igniter shell, two ends in the length direction of the electric heating head are a heating end and an ignition end respectively, the heating end is positioned on one side close to the oil inlet end, the ignition end is positioned on one side far away from the oil inlet end, one end of the oil inlet pipe far away from the oil inlet extends to the heating end, and one end of the oil inlet pipe far away from the oil inlet sprays fuel oil on the outer wall of the heating end; the electric heating head is connected with a cable, and the cable penetrates into the igniter shell to be connected with the heating end; an insulating layer is filled between the circumferential inner wall of the igniter housing and the circumferential outer wall of the cable.
In one embodiment of the utility model, the insulating layer is an alumina ceramic tube.
In one embodiment of the utility model, the igniter shell is in a circular tube shape, a through hole I is formed in the central axis of the igniter shell, the cable penetrates into the through hole I, and the insulating layer is arranged in the through hole I.
In one embodiment of the utility model, a first boss and a second boss are arranged on the circumferential outer wall of one end of the oil inlet end, the first boss and the second boss are arranged in a convex shape, the second boss is positioned on one side of the first boss away from the ignition end, and the oil inlet is arranged in the radial direction of the second boss.
In one embodiment of the present utility model, the diameter of the second boss is larger than the diameter of the first boss.
In one embodiment of the utility model, a bending oil pipe is arranged between the first boss and the second boss, the bending oil pipe is in an S-shaped arrangement, the oil inlet pipe is in a cylindrical pipe shape, one end of the bending oil pipe is communicated with the oil inlet, and the other end of the bending oil pipe is communicated with the oil inlet pipe.
In one embodiment of the utility model, a fuel cavity is arranged on the inner circumferential wall of the ignition end opposite to the heating end, one end of the fuel inlet pipe extends to the position of the fuel cavity, and the fuel inlet pipe is communicated with the fuel cavity.
In one embodiment of the utility model, a gap is arranged between the inner wall of the ignition end of the igniter shell and the outer wall of the electric heating head, the gap is communicated with the outside air, and the gap is filled with fuel in the fuel cavity.
In one embodiment of the utility model, the ignition end is provided with a flame-retardant head, the ignition end is positioned in the flame-retardant head, the flame-retardant head is cylindrical, and a plurality of flame-retardant ports are arranged on the side wall of the flame-retardant head in a ring array manner.
In one embodiment of the utility model, a limiting step is arranged on the inner wall of the ignition end, a limiting boss is arranged on the circumferential outer wall of the heating end, and the limiting boss is in contact with the limiting step.
Compared with the prior art, the technical scheme of the utility model has the following advantages:
according to the igniter for the small turbine engine, the oil inlet pipe supplies oil and injects oil to the igniter body according to the given flow through the control system, the electric heating head guides the fuel oil to be heated at the heating end of the ceramic electric heating head to become an oil-gas mixture, then the oil gas flowing to the ignition part of the ceramic electric heating head is ignited at high temperature, and flame is injected into the appointed position of the combustion chamber after ignition, so that ignition in the starting process of the engine is realized. When the engine speed is low, the igniter for the small turbine engine can effectively ignite kerosene in the combustion chamber of the engine under the condition of poor fuel atomization effect; the traditional high-pressure pulsation ignition device and the propane combustion-supporting device can be omitted, and the cost of the small turbojet engine for the target aircraft is further reduced.
Drawings
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings, in which
FIG. 1 is a schematic view of the igniter for a small turbine engine of the present utility model;
FIG. 2 is a top view of the igniter for the small turbine engine of the present utility model;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2 in accordance with the present utility model.
Description of the specification reference numerals: the igniter comprises an igniter shell 1, an oil inlet end 11, an ignition end 12, a flame-spraying head 121, a flame-spraying opening 122, a limiting step 123, an oil inlet 13, an oil inlet pipe 14, a first through hole 15, a first boss 16, threads 161, a second boss 17, a compression nut 171, a sealing gasket 172, an O-shaped ring 173, a bent oil pipe 18, an electric heating head 2, a heating end 21, an ignition end 22, a fuel cavity 23, a limiting boss 24 and a gap 100.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.
Referring to fig. 1-3, the igniter for the small turbine engine comprises an igniter shell 1 and an electric heating head 2, wherein two ends of the igniter shell 1 in the length direction are respectively provided with an oil inlet end 11 and an ignition end 12, the oil inlet end 11 is provided with an oil inlet 13, the oil inlet 13 is used for fuel to enter, the side wall of the igniter shell 1 in the axial direction is provided with an oil inlet pipe 14, and one end of the oil inlet pipe 14 is communicated with the oil inlet 13; the electric heating head 2 is arranged in the ignition end 12 in the igniter shell 1, two ends in the length direction of the electric heating head 2 are respectively a heating end 21 and an ignition end 22, the heating end 21 is positioned on one side close to the oil inlet end 11, the ignition end 22 is positioned on one side far away from the oil inlet end 11, one end of the oil inlet pipe 14 far away from the oil inlet 13 extends to the heating end 21, and one end of the oil inlet pipe 14 far away from the oil inlet 13 sprays fuel oil on the outer wall of the heating end 21; the electric heating head 2 is connected with a cable 3, and the cable 3 penetrates into the igniter shell 1 to be connected with the heating end 21; an insulating layer 4 is filled between the circumferential inner wall of the igniter housing 1 and the circumferential outer wall of the cable 3. The insulating layer 4 is an alumina ceramic tube, so that insulation is realized, and meanwhile, the capacity of oil in a cavity is reduced, and quick filling of fuel oil is realized.
Wherein, the igniter shell 1 is in a circular tube shape, a through hole I15 is arranged at the central axis position of the igniter shell 1, the cable 3 penetrates into the through hole I15, and the insulating layer 4 is arranged in the through hole I15. The first through hole 15 is a circular through hole, the cable 3 enters the first through hole 15 from one end of the oil inlet end 11 and is connected with the electric heating head 2 so as to supply the electric heating head 2 to heat, the electric heating head 2 is equivalent to an electric soldering iron and can heat to hundreds of degrees centigrade, oil ejected from the oil inlet pipe 14 falls on the heating end 21, the oil gas fills the ignition end 12, and the ignition end 22 is close to the outside air, so that the oxygen concentration is higher, the oil gas of the ignition end 22 is ignited at high temperature, and the formed flame is ejected from the ignition end 12 to form the appearance of a torch.
In the above structure, the first boss 16 and the second boss 17 are disposed on the circumferential outer wall of one end of the oil inlet end 11, the first boss 16 and the second boss 17 are disposed in a shape of a "convex", the second boss 17 is located at one side of the first boss 16 away from the ignition end 12, and the oil inlet 13 is disposed in a radial direction of the second boss 17. The diameter of the boss II 17 is larger than that of the boss I16, the boss II 17 is provided with a compression nut 171, the compression nut 171 is in threaded connection with the inner wall of the boss II 17, the compression nut 171 limits the insulating layer 4 in the igniter shell 1, a sealing gasket 172 is arranged between the compression nut 171 and the insulating layer 4, at least one O-shaped ring 173 is arranged between the compression nut 171 and the inner wall of the boss II 17, the cable 3 penetrates through the compression nut 171 and the boss I16, and threads 161 are arranged on the outer wall of the boss I16.
In the above structure, a bent oil pipe 18 is disposed between the first boss 16 and the second boss 17, the bent oil pipe 18 is disposed in an "S" shape, the oil inlet pipe 14 is in a cylindrical tubular shape, one end of the bent oil pipe 18 is communicated with the oil inlet 13, and the other end of the bent oil pipe 18 is communicated with the oil inlet pipe 14.
In the above structure, the fuel cavity 23 is disposed on the circumferential inner wall of the ignition end 12 opposite to the heating end 21, one end of the fuel inlet pipe 14 extends to the position of the fuel cavity 23, and the fuel inlet pipe 14 is communicated with the fuel cavity 23. A gap 100 is arranged between the inner wall of the ignition end 12 of the igniter shell 1 and the outer wall of the electric heating head 2, the gap 100 is communicated with the outside air, and the gap 100 is filled with fuel in the fuel cavity 23. The electric heating head 2 enables air inflow and oil gas mixture to be mixed and ignited at the highest temperature of the top of the electric heating head, so that a flame spraying igniter is formed.
In the above structure, the ignition end 12 is provided with a flame-spraying head 121, the ignition end 22 is located in the flame-spraying head 121, the flame-spraying head 121 is cylindrical, and a plurality of flame-spraying ports 122 are arranged on the side wall of the flame-spraying head 121 in a ring array manner. The firing tip 22 extends into the flame head 121 to provide more adequate contact with the air and more sufficient oxygen to facilitate the ignition of the oil and gas at high temperatures.
In the above structure, the inner wall of the ignition end 12 is provided with a limiting step 123, the circumferential outer wall of the heating end 21 is provided with a limiting boss 24, and the limiting boss 24 is in contact with the limiting step 123. The limiting step 123 limits the installation position of the electric heating head 2, when the limiting boss 24 contacts with the limiting step 123, the electric heating head 2 reaches the installation position, and the ignition end 22 is positioned in the flame-spraying head 121 at the moment, so that flame can be conveniently sprayed out.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (10)
1. An igniter for a small turbine engine, characterized by: comprising the steps of (a) a step of,
the igniter comprises an igniter shell, wherein the two ends of the igniter shell in the length direction are respectively provided with an oil inlet and an ignition end, the oil inlet is used for entering fuel, an oil inlet pipe is arranged on the side wall of the igniter shell in the axial direction, and one end of the oil inlet pipe is communicated with the oil inlet;
the electric heating head is arranged in the ignition end in the igniter shell, two ends in the length direction of the electric heating head are a heating end and an ignition end respectively, the heating end is positioned on one side close to the oil inlet end, the ignition end is positioned on one side far away from the oil inlet end, one end of the oil inlet pipe far away from the oil inlet extends to the heating end, and one end of the oil inlet pipe far away from the oil inlet sprays fuel oil on the outer wall of the heating end;
the electric heating head is connected with a cable, and the cable penetrates into the igniter shell to be connected with the heating end;
an insulating layer is filled between the circumferential inner wall of the igniter housing and the circumferential outer wall of the cable.
2. The igniter for a small turbine engine as defined in claim 1 wherein: the insulating layer is an alumina ceramic tube.
3. The igniter for a small turbine engine according to claim 1 or 2, characterized in that: the igniter shell is in a circular tube shape, a through hole I is formed in the central axis of the igniter shell, the cable penetrates into the through hole I, and the insulating layer is arranged in the through hole I.
4. An igniter for a small turbine engine as defined in claim 3 wherein: the oil inlet is characterized in that a first boss and a second boss are arranged on the circumferential outer wall of one end of the oil inlet end, the first boss and the second boss are arranged in a convex shape, the second boss is located on one side, away from the ignition end, of the first boss, and the oil inlet is arranged in the radial direction of the second boss.
5. The igniter for a small turbine engine as defined in claim 4 wherein: the diameter of the boss II is larger than that of the boss I.
6. The igniter for a small turbine engine as defined in claim 5 wherein: the novel oil inlet pipe is characterized in that a bending oil pipe is arranged between the first boss and the second boss, the bending oil pipe is in an S-shaped arrangement, the oil inlet pipe is in a cylindrical pipe shape, one end of the bending oil pipe is communicated with the oil inlet, and the other end of the bending oil pipe is communicated with the oil inlet pipe.
7. The igniter for a small turbine engine as defined in claim 1 wherein: the ignition end is equipped with the fuel cavity on the circumference inner wall opposite with the heating end, the one end of advance oil pipe extends to the fuel cavity position department, advance oil pipe and fuel cavity intercommunication.
8. The igniter for a small turbine engine as defined in claim 7 wherein: a gap is arranged between the inner wall of the ignition end of the igniter shell and the outer wall of the electric heating head, the gap is communicated with the outside air, and the gap is filled with fuel in the fuel cavity.
9. The igniter for a small turbine engine as defined in claim 8 wherein: the ignition end is provided with a flame spraying head, the ignition end is positioned in the flame spraying head, the flame spraying head is cylindrical, and a plurality of flame spraying ports are arranged on the side wall of the flame spraying head in a ring array mode.
10. The igniter for a small turbine engine as defined in claim 9 wherein: the inner wall of the ignition end is provided with a limiting step, the circumferential outer wall of the heating end is provided with a limiting boss, and the limiting boss is contacted with the limiting step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321455216.8U CN220081546U (en) | 2023-06-08 | 2023-06-08 | Igniter for small turbine engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321455216.8U CN220081546U (en) | 2023-06-08 | 2023-06-08 | Igniter for small turbine engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220081546U true CN220081546U (en) | 2023-11-24 |
Family
ID=88827422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321455216.8U Active CN220081546U (en) | 2023-06-08 | 2023-06-08 | Igniter for small turbine engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220081546U (en) |
-
2023
- 2023-06-08 CN CN202321455216.8U patent/CN220081546U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |