CN217976396U - Torch igniter - Google Patents
Torch igniter Download PDFInfo
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- CN217976396U CN217976396U CN202221760949.8U CN202221760949U CN217976396U CN 217976396 U CN217976396 U CN 217976396U CN 202221760949 U CN202221760949 U CN 202221760949U CN 217976396 U CN217976396 U CN 217976396U
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Abstract
The utility model discloses a torch igniter, wherein a fuel starting nozzle is arranged at the center of a head component, an annular air flow channel is formed between the outer wall of the fuel starting nozzle and the inner wall of a central through hole of the head component, and a rotational flow air channel is formed on an air swirler of the head component; the annular airflow channel can be used as an auxiliary atomizing air channel, and can be connected with gas fuel to be used as a gas fuel starting nozzle, and as a torch igniter of a gas turbine, the annular airflow channel can adopt a common automobile spark plug to reduce the cost, can use liquid fuel and gas fuel and can be flexibly switched, and meanwhile, the ignition reliability is not reduced.
Description
Technical Field
The utility model relates to a gas turbine technical field, in particular to torch point firearm.
Background
The Gas Turbine (Gas Turbine) is a rotary power machine which takes continuously flowing Gas as a working medium and converts the heat energy of the working medium into mechanical power. Gas turbines are prime movers that burn fossil fuels to produce power.
The industrial gas turbine combustion chamber adopting diesel oil and biodiesel as fuel needs longer atomization evaporation mixing time, the direct ignition mode of common electric sparks is difficult to ensure reliable ignition, and certain high-energy auxiliary ignition measures need to be adopted. The torch igniter and the combustion chamber are relatively independent, the intensity of ignition energy, the ignition position, the action mode and the like are easy to control and adjust, and the torch igniter is a reliable ignition solution.
Most of the existing torch igniters adopt single fuel, and the application range is limited.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a torch point firearm, it is with low costs, can use liquid fuel and gas fuel and can switch in a flexible way, do not reduce the ignition reliability again simultaneously.
In order to solve the technical problem, the utility model provides a torch igniter, which comprises a head component 1 and a fuel oil starting nozzle 9;
the head assembly 1 comprises a circular base 10 and a circular air swirler 12;
the outer diameter of the air swirler 12 is smaller than that of the base 10;
the upper end of the air cyclone 12 is coaxially and fixedly connected to the lower side surface of the base 10;
the air swirler 12 is formed with a swirl air passage;
a base through hole is formed in the center of the base 10;
the diameter of the base through hole is smaller than the inner diameter of the air swirler 12 and larger than the outer diameter of the fuel starting nozzle 9;
the fuel starting nozzle 9 is coaxially arranged in the base through hole;
the nozzle of the fuel oil starting nozzle 9 retracts upwards for a set distance relative to the outlet at the lower end of the through hole of the base;
an annular airflow channel 18 is formed between the outer wall of the fuel oil starting nozzle 9 and the inner wall of the through hole of the base;
the upper end of the annular air flow passage 18 is used for communicating auxiliary atomizing air to be used as an auxiliary atomizing air passage or for communicating gas fuel to be used as a gas fuel starting nozzle.
Preferably, the ratio of said set distance to the diameter of the nozzle opening of the fuel start nozzle 9 is less than 3.
Preferably, the torch igniter further comprises an inner barrel 2;
the inner cylinder 2 is a cylindrical structure, and the upper end of the cylinder wall is fixedly connected to the lower end of the air cyclone 12.
Preferably, the torch igniter further comprises a housing 3;
the shell 3 is coaxially sleeved outside the inner barrel 2;
the upper end of the shell 3 is fixedly connected to the lower side surface of a base 10 of the head assembly 1;
the lower end of the cylinder wall of the inner cylinder 2 is contracted to be used as a combustion outlet and extends out to the lower part of the lower end of the shell 3;
the lower end of the shell 3 is contracted, and a main air inlet 32 is formed between the lower end of the shell and the wall of the inner cylinder 2;
the inner wall of the shell 3 and the outer wall of the inner cylinder 2 form an annular channel 33;
the lower part of the shell 3 is provided with an auxiliary air inlet 35;
a plurality of air supply through holes 21 are formed in the wall of the upper part of the inner cylinder 2;
a spark plug 7 is fixedly arranged at the upper part of the shell 3;
the ignition electrode of the spark plug 7 projects into the upper part of the inner cylinder 2.
Preferably, the wall thickness of the inner cylinder 2 is less than 1/2 of the wall thickness of the shell 3.
Preferably, a threaded hole 36 is formed at the upper part of the housing 3;
the spark plug 7 is fixed on the upper part of the shell 3 in a threaded fit with the threaded hole 36.
Preferably, a mounting flange 4 is arranged on the outer side of the lower end of the shell 3.
Preferably, the fuel starting nozzle 9 is a plane hole nozzle.
Preferably, the air swirler 12 is a radial swirler.
The utility model discloses a torch igniter, the center of the head component 1 is provided with a fuel starting nozzle 9, an annular airflow channel 18 is formed between the outer wall of the fuel starting nozzle 9 and the inner wall of the base through hole of the head component 1, and a rotational flow air channel is formed on an air swirler 12 of the head component 1; the annular airflow channel 18 can be used as an auxiliary atomizing air channel, can be connected with gas fuel to be used as a gas fuel starting nozzle, can be used as a torch igniter of a gas turbine, can adopt a common automobile spark plug to reduce the cost, can use liquid fuel and gas fuel and can be flexibly switched, and meanwhile, the ignition reliability is not reduced.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required for the present invention are briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic cross-sectional view of a torch igniter according to the present invention.
Description of reference numerals:
1 a head assembly; 10, a base; 12 an air swirler; 9 fuel starting nozzle; 18 an annular gas flow passage; 2, an inner cylinder; 21 an air supply through hole; 3, a shell; 32 a primary air inlet; 33 an annular channel; 35 auxiliary intake holes; 36 threaded holes; 7 a spark plug; and 4, installing a flange.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments, but not all embodiments, of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
Example one
As shown in FIG. 1, the torch igniter includes a head assembly 1 and a fuel initiation nozzle 9;
the head assembly 1 comprises a circular base 10 and a circular air swirler 12;
the outer diameter of the air swirler 12 is smaller than that of the base 10;
the upper end of the air swirler 12 is coaxially and fixedly connected to the lower side surface of the base 10;
the air swirler 12 is formed with a swirling air passage;
a base through hole is formed in the center of the base 10;
the diameter of the base through hole is smaller than the inner diameter of the air swirler 12 and larger than the outer diameter of the fuel starting nozzle 9;
the fuel starting nozzle 9 is coaxially arranged in the base through hole;
the nozzle of the fuel oil starting nozzle 9 is retracted upwards for a set distance relative to the outlet at the lower end of the through hole of the base;
an annular airflow channel 18 is formed between the outer wall of the fuel oil starting nozzle 9 and the inner wall of the through hole of the base;
the annular air flow passage 18 is used for communicating auxiliary atomizing air as an auxiliary atomizing air passage at the upper end thereof or for communicating gas fuel as a gas fuel starting nozzle.
In the torch igniter of the first embodiment, the fuel starting nozzle 9 is arranged in the center of the head assembly 1, an annular airflow channel 18 is formed between the outer wall of the fuel starting nozzle 9 and the inner wall of the through hole of the base of the head assembly 1, and a rotational flow air channel is formed on the air swirler 12 of the head assembly 1; the annular airflow channel 18 can be used as an auxiliary atomizing air channel, can be connected with gas fuel to be used as a gas fuel starting nozzle, can be used as a torch igniter of a gas turbine, can adopt a common automobile spark plug to reduce the cost, can use liquid fuel and gas fuel and can be flexibly switched, and meanwhile, the ignition reliability is not reduced.
Example two
Based on the torch igniter of the first embodiment, the ratio of the set distance to the diameter of the nozzle opening of the fuel start nozzle 9 is less than 3.
At this ratio, the fuel injected from the fuel starting nozzle 9 can achieve a desired atomization effect under the influence of air.
EXAMPLE III
According to the first embodiment, the torch igniter further comprises an inner barrel 2;
the inner cylinder 2 is a cylindrical structure, and the upper end of the cylinder wall is fixedly connected to the lower end of the air cyclone 12.
Example four
According to a third embodiment, the torch igniter further comprises a housing 3;
the shell 3 is coaxially sleeved outside the inner barrel 2;
the upper end of the shell 3 is fixedly connected to the lower side surface of a base 10 of the head assembly 1;
the lower end of the cylinder wall of the inner cylinder 2 is contracted to be used as a combustion outlet and extends out to the lower part of the lower end of the shell 3;
the lower end of the shell 3 is contracted, and a main air inlet 32 is formed between the lower end of the shell and the wall of the inner cylinder 2;
the inner wall of the shell 3 and the outer wall of the inner cylinder 2 form an annular channel 33;
an auxiliary air inlet 35 is arranged at the lower part of the shell 3;
a plurality of air supply through holes 21 are formed in the wall of the upper part of the inner cylinder 2;
a spark plug 7 is fixedly arranged at the upper part of the shell 3;
the ignition electrode of the spark plug 7 extends into the upper part of the inner barrel 2, and the electric spark generated by the spark plug 7 ignites the combustible mixture.
Preferably, a threaded hole 36 is formed at the upper part of the housing 3;
the spark plug 7 is matched with the thread hole 36 in a thread manner, is fixedly arranged on the upper part of the shell 3 and is convenient to assemble and disassemble.
Preferably, the wall thickness of the inner cylinder 2 is less than 1/3 of the wall thickness of the housing 3.
Preferably, a mounting flange 4 is arranged on the outer side of the lower end of the shell 3.
Preferably, the fuel starting nozzle 9 is a plane hole nozzle, and forms a simple jet type air atomizing nozzle together with the auxiliary atomizing air.
Preferably, the air swirler 12 is a radial swirler.
In the torch igniter of the third embodiment, the inner barrel 2 is a flame generating area, air enters the annular channel 33 through the auxiliary air inlet 35 and the main air inlet 32 respectively, part of the air enters the inner barrel 2 through the air supply through hole 21, and the rest of the air enters the air swirler 12 along the annular channel 33 to generate a controllable rotational flow, and the air enters the inner barrel to be mixed with fuel for combustion.
The third embodiment of the torch igniter has compact structure and arrangement, each part of the torch igniter can be disassembled, and any damaged part can be conveniently replaced. During installation, the fuel starting nozzle 9 can be installed in a base through hole of the base 10 of the head assembly 1, the nozzle retraction distance of the fuel starting nozzle 9 is adjusted, the inner cylinder 2 is assembled at the lower end of the air swirler 12 of the head assembly 1, the shell 3 is coaxially sleeved outside the inner cylinder 2 and is installed and connected to the base 10 of the head assembly 1, and finally the spark plug 7 is installed in a threaded hole 36 in the upper portion of the shell 3.
The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements and the like made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A torch igniter, characterized in that it comprises a head assembly (1) and a fuel start nozzle (9);
the head assembly (1) comprises a circular base (10) and a circular air swirler (12);
the outer diameter of the air swirler (12) is smaller than that of the base (10);
the upper end of the air swirler (12) is coaxially and fixedly connected to the lower side surface of the base (10);
the air swirler (12) is provided with a swirling air channel;
a base through hole is formed in the center of the base (10);
the diameter of the base through hole is smaller than the inner diameter of the air swirler (12) and larger than the outer diameter of the fuel oil starting nozzle (9);
the fuel starting nozzle (9) is coaxially arranged in the base through hole;
the nozzle of the fuel oil starting nozzle (9) retracts upwards for a set distance relative to the outlet at the lower end of the through hole of the base;
an annular airflow channel (18) is formed between the outer wall of the fuel oil starting nozzle (9) and the inner wall of the through hole of the base;
the upper end of the annular air flow channel (18) is used for communicating auxiliary atomizing air to be used as an auxiliary atomizing air channel or communicating gas fuel to be used as a gas fuel starting nozzle.
2. The torch igniter of claim 1,
the ratio of the set distance to the diameter of the nozzle opening of the fuel start nozzle (9) is less than 3.
3. The torch igniter of claim 1,
the torch igniter also comprises an inner cylinder (2);
the inner cylinder (2) is of a cylindrical structure, and the upper end of the cylinder wall is fixedly connected to the lower end of the air cyclone (12).
4. A torch igniter as defined in claim 3,
the torch igniter further comprises a housing (3);
the shell (3) is coaxially sleeved outside the inner cylinder (2);
the upper end of the shell (3) is fixedly connected to the lower side surface of a base (10) of the head assembly (1);
the lower end of the cylinder wall of the inner cylinder (2) is contracted to be used as a combustion outlet and extends out to the lower part of the lower end of the shell (3);
the lower end of the shell (3) is contracted, and a main air inlet (32) is formed between the lower end of the shell and the wall of the inner cylinder (2);
the inner wall of the shell (3) and the outer wall of the inner cylinder (2) form an annular channel (33);
an auxiliary air inlet (35) is arranged at the lower part of the shell (3);
a plurality of air supply through holes (21) are formed in the wall of the upper part of the inner cylinder (2);
a spark plug (7) is fixedly arranged at the upper part of the shell (3);
the ignition electrode of the spark plug (7) extends into the upper part of the inner cylinder (2).
5. A torch igniter as defined in claim 4,
a threaded hole (36) is formed in the upper part of the shell (3);
the spark plug (7) is matched with the threaded hole (36) in a threaded mode and is fixedly arranged on the upper portion of the shell (3).
6. A torch igniter as defined in claim 4,
the wall thickness of the inner cylinder (2) is less than 1/2 of the wall thickness of the shell (3).
7. The torch igniter of claim 4,
and a mounting flange (4) is arranged on the outer side of the lower end of the shell (3).
8. The torch igniter of claim 4,
the fuel starting nozzle (9) is a plane hole nozzle.
9. A torch igniter as defined in claim 4,
the air swirler (12) is a radial swirler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221760949.8U CN217976396U (en) | 2022-07-08 | 2022-07-08 | Torch igniter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221760949.8U CN217976396U (en) | 2022-07-08 | 2022-07-08 | Torch igniter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217976396U true CN217976396U (en) | 2022-12-06 |
Family
ID=84275469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221760949.8U Active CN217976396U (en) | 2022-07-08 | 2022-07-08 | Torch igniter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217976396U (en) |
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2022
- 2022-07-08 CN CN202221760949.8U patent/CN217976396U/en active Active
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