CN118391705A - Flame guide tube of torch igniter for combustion heater, and mounting method and test method thereof - Google Patents
Flame guide tube of torch igniter for combustion heater, and mounting method and test method thereof Download PDFInfo
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- CN118391705A CN118391705A CN202410840493.3A CN202410840493A CN118391705A CN 118391705 A CN118391705 A CN 118391705A CN 202410840493 A CN202410840493 A CN 202410840493A CN 118391705 A CN118391705 A CN 118391705A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
- G01M9/02—Wind tunnels
- G01M9/04—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23Q—IGNITION; EXTINGUISHING-DEVICES
- F23Q13/00—Igniters not otherwise provided for
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Abstract
The invention belongs to the technical field of wind tunnel tests, and discloses a torch igniter fire guide tube for a combustion heater, an installation method and a test method thereof. The fire guide pipe is an integrally formed part, is manufactured by adopting a high-temperature alloy material through a 3D printing technology, and is internally provided with a cooling water flow passage and a purging nitrogen flow passage. The installation method forms a small gap protection air flow passage by adjusting the thickness of the red copper sealing gasket and the tolerance fit between the outer diameter of the straight pipe section of the fire guide pipe and the inner diameter of the torch installation hole. In the whole process of the long-time thermal state test, the test method carries out the whole process thermal protection on the inner part and the outer part of the fire guide pipe and the torch mounting hole of the ignition section of the combustion heater. The torch igniter fire guide pipe for the combustion heater, the mounting method and the test method solve the problem of heat protection of the torch igniter in hypersonic high-temperature wind tunnel hundred-second long-time thermal state test, can stably work for a long time within the range that the temperature of fuel gas in the combustion heater is less than or equal to 2350K, and have engineering practical values.
Description
Technical Field
The invention belongs to the technical field of wind tunnel tests, and particularly relates to a torch igniter fire guide tube for a combustion heater, an installation method and a test method thereof.
Background
When hypersonic aircrafts and scramjet engines are tested in hypersonic high-temperature wind tunnels, parameters such as Mach number, pressure, temperature, oxygen content and the like need to be simulated, and an air heater is generally adopted to heat test gas. Combustion heaters are widely used because of their low cost, rapid start-up, long run time, and ability to provide high enthalpy, high pressure incoming flow conditions. The working principle of the combustion heater is basically consistent with that of a liquid rocket engine, namely, a combustion agent and an oxidant are sprayed into a combustion chamber through an injector, and ignition and starting are performed after blending are completed, so that high-temperature and high-pressure fuel gas is generated.
The torch igniter is in principle equivalent to a small combustion heater, and consists of a torch body and a torch flame guide pipe. In order to achieve the simplicity and reusability of the torch igniter for the combustion heater, the combustion agent is generally selected from alcohol, kerosene, hydrogen and other mediums, the oxidant is generally selected from air, and after the combustion agent and the oxidant are mixed, ignition is completed through ignition plug triggering. According to engineering development experience, the flow of the torch igniter is 1-5 per mill of the flow of the combustion heater, and the reliable ignition of the combustion heater can be realized when the temperature of fuel gas is 1500-2000K.
In the design of a flame guide for a torch igniter of a combustion heater, a single-wall flame guide of a heat sink structure is initially adopted, and the condition that the inner wall or the end face is partially ablated often occurs. Later, the perforated water-cooling fire guide tube is adopted, so that the problem of heat protection of the inner wall surface can be effectively solved. However, the perforated water-cooling fire guide pipe can only cool the inner wall surface of the straight pipe section at the front end of the fire guide pipe, and cannot cool the inner wall surface of the throat contraction section with the most concentrated heat flow. In the hypersonic high-temperature wind tunnel hundred-second long-time thermal state test process, the outer wall surface of the fire guide tube is in contact with the high-temperature environment inside the combustion heater for a long time, and the heat radiation quantity is accumulated to cause ablation at the front end of the fire guide tube.
Currently, there is a need to develop a torch igniter pilot tube for a combustion heater, and a method of installing and testing the same.
Disclosure of Invention
The invention aims to provide a torch igniter fire guide pipe for a combustion heater, and aims to provide a method for installing the torch igniter fire guide pipe for the combustion heater.
The torch igniter fire guide pipe for the combustion heater is an integrally formed part, and is manufactured by adopting a high-temperature alloy material through a 3D printing technology; the fire guide pipe comprises a column head and a straight pipe section which are sequentially connected from front to back; an inner cavity is arranged on the central axis of the fire guide tube, the inner cavity in the column head is divided into two sections, the front section is a cylindrical inner cavity I, the rear section is a conical inner cavity, the inner cavity in the straight tube section is a cylindrical inner cavity II, the inner diameter of the cylindrical inner cavity I is larger than that of the cylindrical inner cavity II, the cylindrical inner cavity I, the conical inner cavity and the cylindrical inner cavity II are in smooth transition from front to back, and the conical inner cavity forms a contraction section;
A water inlet confluence ring, a water outlet confluence ring and an air inlet confluence ring which encircle the conical inner cavity are sequentially arranged in the column head of the fire guide tube from front to back, and each confluence ring is an annular inner cavity; the water inlet converging ring is externally connected with a cooling water inlet pipe, the water outlet converging ring is externally connected with a cooling water outlet pipe, and the air inlet converging ring is externally connected with a nitrogen purging air inlet pipe; the water inlet converging ring is provided with evenly distributed water inlet holes along the circumferential direction, the water outlet converging ring is provided with water outlet holes corresponding to the water inlet holes one by one along the circumferential direction, cooling water flow channels are arranged between each group of water inlet holes and the water outlet holes, and the cooling water flow channels are folded back at the front edge of the straight pipe section; the nitrogen purging device comprises a nitrogen purging inlet pipe, a nitrogen purging flow passage, a nitrogen purging inlet pipe, a nitrogen purging outlet pipe and a nitrogen purging outlet pipe, wherein the air purging inlet pipe is circumferentially provided with uniformly distributed air inlets;
The front end face of the column cap is provided with a sealing step, and the rear end face of the column cap is provided with a sealing groove.
The invention relates to a method for installing a torch igniter fire guide pipe for a combustion heater, which comprises the following steps:
s21, installing a red copper sealing gasket;
placing a red copper sealing gasket I in the sealing groove, and sleeving a red copper sealing gasket II on the sealing step;
S22, installing a fire guide pipe;
Inserting a straight pipe section of the fire guide pipe into a torch mounting hole of a firing section of the combustion heater, wherein the torch mounting hole is a through hole I, and an opening of the through hole I is formed in an inner cavity of the combustion heater; the straight pipe section and the ignition section of the combustion heater are positioned through a sealing step, and an isolation gap is formed between the front end face of the column head of the fire guide pipe and the matching end face of the torch mounting hole; an annular gap is formed between the straight pipe section and the torch mounting hole; the isolation gap, the annular gap and the through hole I are communicated to form a tiny gap protection air flow passage together;
s23, installing a torch igniter body;
The torch igniter body is a circular tube, the front section of the torch igniter body is a flange, through holes II which are uniformly distributed are formed in the circumferential direction of the flange, and threaded blind holes which are in one-to-one correspondence with the through holes II are formed in the ignition section of the combustion heater; sequentially inserting bolts into the through holes II and the threaded blind holes and screwing up the bolts to finish the installation of the torch igniter body; the torch igniter body and the fire guide pipe form a torch igniter;
s24, testing a nitrogen purging pipeline;
Externally connecting a nitrogen purging inlet pipe with a high-pressure nitrogen source of a hypersonic high-temperature wind tunnel, wherein the pressure range of the high-pressure nitrogen source is 3-23 MPa; and (3) opening a high-pressure nitrogen source, detecting the nitrogen flow of the outlet of the torch mounting hole, and if no flow or flow does not meet the purging requirement, disassembling the torch igniter, adjusting the thickness of the red copper sealing gasket I until the nitrogen flow of the outlet of the torch mounting hole meets the purging requirement, and finishing the installation.
The test method of the torch igniter fire guide pipe for the combustion heater comprises the following steps:
s31, preparing before testing;
Externally connecting a cooling water inlet pipe with a hypersonic high-temperature wind tunnel high-pressure water source, wherein the pressure range of the high-pressure water source is 2-6 MPa; externally connecting a nitrogen purging inlet pipe with a high-pressure nitrogen source of a hypersonic high-temperature wind tunnel, wherein the pressure range of the high-pressure nitrogen source is 3-23 MPa;
S32, starting a cooling water flow passage;
In the process of performing a long-time thermal state test of hundred seconds in a hypersonic high-temperature wind tunnel, after a torch igniter starts to work, a high-pressure water source is opened, cooling water flows out sequentially through a cooling water inlet pipe, a water inlet converging ring, a cooling water flow channel, a water outlet converging ring and a cooling water outlet pipe, and continuous cooling is performed on the inner wall of a contraction section, the inner wall of a straight pipe section and the outlet end face of the straight pipe section of the fire guide pipe;
s33, starting a nitrogen purging flow passage;
after the ignition of the combustion heater is successful, the torch igniter is extinguished, high-pressure air is continuously introduced into the inner cavity of the fire guide pipe, the high-pressure air is ensured to continuously flow into the combustion heater at a small flow rate, and the pressure range of the high-pressure air is 0-25 MPa;
Opening a high-pressure nitrogen source, spraying high-pressure nitrogen through an air inlet converging ring, a nitrogen blowing flow passage, an air outlet hole and a fine gap protection air flow passage in sequence, forming a protection air film on the periphery of the straight pipe section, and continuously flowing the high-pressure nitrogen into the combustion heater at a small flow rate;
s34, closing after the test;
and after the hypersonic high-temperature wind tunnel is subjected to hundred-second long-time thermal state test, the high-pressure water source and the high-pressure nitrogen source are delayed to be closed.
The torch igniter fire guide pipe for the combustion heater is manufactured by adopting 3D printing of high-temperature alloy materials, and a cooling water inlet pipe, a cooling water outlet pipe, a cooling water flow passage, a nitrogen purging inlet pipe and a nitrogen purging flow passage are integrally formed by printing.
According to the torch igniter fire guide pipe for the combustion heater, a fine gap protection air flow passage is formed by controlling the thickness of the red copper sealing gasket I and the tolerance fit between the outer diameter of the straight pipe section of the fire guide pipe and the inner diameter of the torch mounting hole.
The torch igniter fire guide pipe for the combustion heater can realize the whole-process thermal protection of the inner part and the outer part of the fire guide pipe and the torch mounting hole of the ignition section of the combustion heater in the whole process of long-time thermal test, and ensures the safety of the long-time thermal test of a wind tunnel.
The torch igniter fire guide pipe for the combustion heater, the mounting method and the test method solve the problem of heat protection of the torch igniter in the hypersonic high-temperature wind tunnel hundred-second long-time thermal state test, can stably work for a long time within the range that the temperature of fuel gas in the combustion heater is less than or equal to 2350K, and have engineering practical values.
Drawings
FIG. 1a is a schematic view (perspective view) of a flame tube of a torch igniter for a combustion heater;
FIG. 1b is a schematic view (front view) of a torch igniter pilot tube for a combustion heater;
FIG. 1c is a schematic view (cross-sectional view) of a torch igniter pilot tube for a combustion heater;
FIG. 1d is an enlarged view of part I of FIG. 1 b;
FIG. 2a is a schematic overall external view (perspective view) of a torch igniter squib for a combustion heater;
FIG. 2b is a schematic view (perspective view) of the internal flow path structure of a torch igniter pilot tube for a combustion heater;
FIG. 3a is a schematic view (perspective view) of the installation of a torch igniter pilot tube for a combustion heater;
FIG. 3b is a schematic view (front view) of the installation of a torch igniter pilot tube for a combustion heater;
FIG. 3c is a cross-sectional view A-A of FIG. 3 b;
FIG. 3d is an enlarged view of part II of FIG. 3 c;
FIG. 3e is an enlarged view of part III of FIG. 3 d;
Fig. 3f is an enlarged view of part IV of fig. 3 d.
In the figure, 1. A fire guide tube; 2. a water inlet confluence ring; 3. a water outlet converging ring; 4. a cooling water flow passage; 5. an air inlet confluence ring; 6. purging the nitrogen flow passage; 7. an air outlet hole; 8. a straight pipe section; 9. a cooling water inlet pipe; 10. a cooling water outlet pipe; 11. purging a nitrogen inlet pipe; 12. a sealing step; 13. a constriction section; 14. sealing the groove; 15. a red copper sealing gasket I; 16. red copper sealing gasket II; 17. a torch mounting hole; 18. a bolt; 19. a heater ignition section; 20. a torch igniter body; 21. the small gap protects the air flow passage; 22. a torch igniter.
Detailed Description
The invention is described in detail below with reference to the drawings and examples.
As shown in fig. 1 a-1D, 2a, 2b and 3 a-3 f, the flame guide tube of the torch igniter for the combustion heater of the embodiment is an integrally formed part, and is manufactured by adopting a high-temperature alloy material through a 3D printing technology; the fire guide pipe 1 comprises a column head and a straight pipe section 8 which are sequentially connected from front to back; an inner cavity is arranged on the central axis of the fire guide tube 1, the inner cavity in the column head is divided into two sections, the front section is a cylindrical inner cavity I, the rear section is a conical inner cavity, the inner cavity in the straight tube section 8 is a cylindrical inner cavity II, the inner diameter of the cylindrical inner cavity I is larger than that of the cylindrical inner cavity II, the cylindrical inner cavity I, the conical inner cavity and the cylindrical inner cavity II are in smooth transition from front to back, and the conical inner cavity forms a contraction section 13;
A water inlet confluence ring 2, a water outlet confluence ring 3 and an air inlet confluence ring 5 which encircle the conical inner cavity are sequentially arranged in the column head of the fire guide tube 1 from front to back, and each confluence ring is an annular inner cavity; the water inlet converging ring 2 is externally connected with a cooling water inlet pipe 9, the water outlet converging ring 3 is externally connected with a cooling water outlet pipe 10, and the air inlet converging ring 5 is externally connected with a nitrogen purging inlet pipe 11; the periphery of the water inlet converging ring 2 is provided with evenly distributed water inlet holes, the periphery of the water outlet converging ring 3 is provided with water outlet holes corresponding to the water inlet holes one by one, cooling water flow channels 4 are arranged between each group of water inlet holes and the water outlet holes, and the cooling water flow channels 4 are folded back at the front edge of the straight pipe section 8; the nitrogen purging inlet pipe 11 is provided with uniformly distributed air inlets along the circumferential direction, the front end surface of the column head is provided with air outlets 7 which are in one-to-one correspondence with the air inlets, and a nitrogen purging flow passage 6 is arranged between each group of air inlets and the air outlets 7;
The front end face of the column cap is provided with a sealing step 12, and the rear end face of the column cap is provided with a sealing groove 14.
The method for installing the torch igniter fire guide pipe for the combustion heater comprises the following steps:
s21, installing a red copper sealing gasket;
Placing a red copper sealing gasket I15 in the sealing groove 14, and sleeving a red copper sealing gasket II 16 on the sealing step 12;
S22, installing a fire guide pipe 1;
The straight pipe section 8 of the fire guide pipe 1 is inserted into a torch mounting hole 17 of an ignition section 19 of the combustion heater, the torch mounting hole 17 is a through hole I, and an opening of the through hole I is formed in an inner cavity of the combustion heater; the straight pipe section 8 and the ignition section 19 of the combustion heater are positioned through the sealing step 12, and an isolation gap is formed between the front end face of the column head of the fire guide pipe 1 and the matching end face of the torch mounting hole 17; an annular gap is formed between the straight pipe section 8 and the torch mounting hole 17; the isolation gap, the annular gap and the through hole I are communicated to form a fine gap protection air flow passage 21;
S23, installing a torch igniter body 20;
the torch igniter body 20 is a circular tube, the front section of the torch igniter body 20 is a flange, through holes II which are uniformly distributed are formed in the circumferential direction of the flange, and threaded blind holes which are in one-to-one correspondence with the through holes II are formed in the ignition section 19 of the combustion heater; sequentially inserting the bolts 18 into the through holes II and the threaded blind holes and screwing up to finish the installation of the torch igniter body 20; the torch igniter body 20 and the fire guide tube 1 form a torch igniter 22;
s24, testing a nitrogen purging pipeline;
Externally connecting a nitrogen purging inlet pipe 11 with a high-pressure nitrogen source of a hypersonic high-temperature wind tunnel, wherein the pressure range of the high-pressure nitrogen source is 3-23 MPa; and (3) opening a high-pressure nitrogen source, detecting the nitrogen flow of the outlet of the torch mounting hole 17, and if no flow or flow does not meet the purging requirement, disassembling the torch igniter 22, adjusting the thickness of the red copper sealing gasket I15 until the nitrogen flow of the outlet of the torch mounting hole 17 meets the purging requirement, and finishing the installation.
The test method of the torch igniter fire guide pipe for the combustion heater comprises the following steps:
s31, preparing before testing;
externally connecting a cooling water inlet pipe 9 with a hypersonic high-temperature wind tunnel high-pressure water source, wherein the pressure range of the high-pressure water source is 2-6 MPa; externally connecting a nitrogen purging inlet pipe 11 with a high-pressure nitrogen source of a hypersonic high-temperature wind tunnel, wherein the pressure range of the high-pressure nitrogen source is 3-23 MPa;
S32, starting a cooling water flow passage 4;
In the process of performing a long-time thermal state test of hundred seconds in a hypersonic high-temperature wind tunnel, after a torch igniter 22 starts to work, a high-pressure water source is opened, cooling water flows out sequentially through a cooling water inlet pipe 9, a water inlet converging ring 2, a cooling water flow channel 4, a water outlet converging ring 3 and a cooling water outlet pipe 10, and continuous cooling is performed on the inner wall of a contraction section 13, the inner wall of a straight pipe section 8 and the outlet end face of the straight pipe section 8 of the fire guide pipe 1;
S33, starting a nitrogen purging flow passage 6;
After the ignition of the combustion heater is successful, the torch igniter 22 is extinguished, the inner cavity of the fire guide pipe 1 is continuously filled with high-pressure air, the high-pressure air is ensured to continuously flow into the combustion heater at a small flow rate, and the pressure range of the high-pressure air is 0-25 MPa;
A high-pressure nitrogen source is opened, high-pressure nitrogen is sprayed out through an air inlet converging ring 5, a nitrogen purging flow passage 6, an air outlet hole 7 and a fine gap protection air flow passage 21 in sequence, a protection air film is formed at the periphery of a straight pipe section 8, and the high-pressure nitrogen continuously flows into a combustion heater at a small flow rate;
s34, closing after the test;
and after the hypersonic high-temperature wind tunnel is subjected to hundred-second long-time thermal state test, the high-pressure water source and the high-pressure nitrogen source are delayed to be closed.
Although embodiments of the invention have been disclosed in the foregoing description and illustrated in the drawings, it will be understood by those skilled in the art that the present invention is not limited to the specific details and illustrations of features and steps set forth herein, and that all features of the invention disclosed, or steps of the method or process, except for mutually exclusive features and/or steps, may be combined in any manner without departing from the principles of the invention.
Claims (10)
1. The torch igniter fire guide pipe for the combustion heater is characterized in that the fire guide pipe (1) is an integrally formed part and is manufactured by adopting a high-temperature alloy material through a 3D printing technology; the fire guide pipe (1) comprises a column head and a straight pipe section (8) which are sequentially connected from front to back; an inner cavity is arranged on the central axis of the fire guide tube (1), the inner cavity in the column head is divided into two sections, the front section is a cylindrical inner cavity I, the rear section is a conical inner cavity, the inner cavity in the straight tube section (8) is a cylindrical inner cavity II, the inner diameter of the cylindrical inner cavity I is larger than that of the cylindrical inner cavity II, the cylindrical inner cavity I, the conical inner cavity and the cylindrical inner cavity II are in smooth transition from front to back, and the conical inner cavity forms a contraction section (13);
a water inlet confluence ring (2), a water outlet confluence ring (3) and an air inlet confluence ring (5) which encircle the conical inner cavity are sequentially arranged in the column head of the fire guide pipe (1) from front to back, and each confluence ring is an annular inner cavity; the water inlet converging ring (2) is externally connected with a cooling water inlet pipe (9), the water outlet converging ring (3) is externally connected with a cooling water outlet pipe (10), and the air inlet converging ring (5) is externally connected with a nitrogen purging air inlet pipe (11); the cooling water flow channels (4) are arranged between each group of water inlet holes and the water outlet holes, and the cooling water flow channels (4) are folded back at the front edge of the straight pipe section (8); the nitrogen purging device is characterized in that evenly distributed air inlets are formed in the circumferential direction of the nitrogen purging inlet pipe (11), air outlets (7) corresponding to the air inlets one by one are formed in the front end face of the column head, and nitrogen purging flow channels (6) are formed between each group of air inlets and the air outlets (7).
2. The flame guide of a torch igniter for a combustion heater according to claim 1, wherein the front end surface of the pillar head is provided with a sealing step (12), and the rear end surface of the pillar head is provided with a sealing groove (14).
3. A method for installing a torch igniter lead for a combustion heater, which is used for installing the torch igniter lead for a combustion heater according to claim 1 or claim 2, characterized by comprising the steps of:
s21, installing a red copper sealing gasket;
s22, installing a fire guide pipe (1);
S23, installing a torch igniter body (20);
s24, testing a nitrogen purging pipeline.
4. The method for installing a torch igniter lead tube for a combustion heater according to claim 3, wherein the installing a red copper sealing gasket of S21 comprises the following steps:
The red copper sealing gasket I (15) is placed in the sealing groove (14), and the red copper sealing gasket II (16) is sleeved on the sealing step (12).
5. A method for installing a torch igniter lead pipe for a combustion heater according to claim 3, wherein the installing lead pipe (1) of S22 comprises the following steps:
The method comprises the steps that a straight pipe section (8) of a fire guide pipe (1) is inserted into a torch mounting hole (17) of an ignition section (19) of a combustion heater, the torch mounting hole (17) is a through hole I, and an opening of the through hole I is formed in an inner cavity of the combustion heater; the straight pipe section (8) and the ignition section (19) of the combustion heater are positioned through a sealing step (12), and an isolation gap is formed between the front end face of the column head of the fire guide pipe (1) and the matching end face of the torch mounting hole (17); an annular gap is arranged between the straight pipe section (8) and the torch mounting hole (17); the isolation gap, the annular gap and the through hole I are communicated to form a fine gap protection air flow passage (21).
6. A method for installing a torch igniter lead for a combustion heater according to claim 3, wherein the installing the torch igniter body (20) of S23 comprises the following steps:
The torch igniter comprises a torch igniter body (20) and a combustion heater, wherein the torch igniter body (20) is a circular tube, the front section of the torch igniter body (20) is a flange, through holes II which are uniformly distributed are formed in the circumferential direction of the flange, and threaded blind holes which are in one-to-one correspondence with the through holes II are formed in an ignition section (19) of the combustion heater; sequentially inserting the bolts (18) into the through holes II and the threaded blind holes and screwing up to finish the installation of the torch igniter body (20); the torch igniter body (20) and the fire guide pipe (1) form a torch igniter (22).
7. The method for installing a torch igniter lead tube for a combustion heater according to claim 3, wherein the test purge nitrogen line of S24 comprises the following steps:
externally connecting a nitrogen purging inlet pipe (11) with a high-pressure nitrogen source of a hypersonic high-temperature wind tunnel, wherein the pressure range of the high-pressure nitrogen source is 3-23 MPa; and (3) opening a high-pressure nitrogen source, detecting the nitrogen flow of the outlet of the torch mounting hole (17), and if no flow or flow does not meet the purging requirement, disassembling the torch igniter (22), adjusting the thickness of the red copper sealing gasket I (15) until the nitrogen flow of the outlet of the torch mounting hole (17) meets the purging requirement, and finishing the installation.
8. A method for testing a flame tube of a torch igniter for a combustion heater, which is used for the flame tube of a torch igniter for a combustion heater according to claim 1 or claim 2, comprising the steps of:
s31, preparing before testing;
Externally connecting a cooling water inlet pipe (9) with a hypersonic high-temperature wind tunnel high-pressure water source, wherein the pressure range of the high-pressure water source is 2-6 MPa; externally connecting a nitrogen purging inlet pipe (11) with a high-pressure nitrogen source of a hypersonic high-temperature wind tunnel, wherein the pressure range of the high-pressure nitrogen source is 3-23 MPa;
S32, starting a cooling water flow passage (4);
S33, starting a purging nitrogen flow passage (6);
s34, closing after the test;
and after the hypersonic high-temperature wind tunnel is subjected to hundred-second long-time thermal state test, the high-pressure water source and the high-pressure nitrogen source are delayed to be closed.
9. The method for testing a torch igniter lead tube for a combustion heater according to claim 8, wherein the step s32 of activating the cooling water flow passage (4) comprises the steps of:
In the long-time thermal state test process of hundred seconds magnitude is carried out in the hypersonic high-temperature wind tunnel, after a torch igniter (22) starts to work, a high-pressure water source is opened, cooling water flows out sequentially through a cooling water inlet pipe (9), a water inlet converging ring (2), a cooling water flow channel (4), a water outlet converging ring (3) and a cooling water outlet pipe (10), and continuous cooling is carried out on the inner wall of a contraction section (13), the inner wall of a straight pipe section (8) and the outlet end face of the straight pipe section (8) of the fire guide pipe (1).
10. The method for testing a torch igniter lead tube for a combustion heater according to claim 8, wherein the step s33 of activating the purge nitrogen flow path (6) comprises the steps of:
after the ignition of the combustion heater is successful, the torch igniter (22) is extinguished, high-pressure air is continuously introduced into the inner cavity of the fire guide pipe (1), and the high-pressure air is ensured to continuously flow into the combustion heater, wherein the pressure range of the high-pressure air is 0-25 MPa;
And (3) opening a high-pressure nitrogen source, and spraying high-pressure nitrogen through an air inlet converging ring (5), a nitrogen blowing flow passage (6), an air outlet hole (7) and a fine gap protection air flow passage (21) in sequence, wherein a protection air film is formed at the periphery of the straight pipe section (8), and the high-pressure nitrogen continuously flows into the combustion heater.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410840493.3A CN118391705B (en) | 2024-06-27 | 2024-06-27 | Flame guide tube of torch igniter for combustion heater, and mounting method and test method thereof |
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| CN202410840493.3A CN118391705B (en) | 2024-06-27 | 2024-06-27 | Flame guide tube of torch igniter for combustion heater, and mounting method and test method thereof |
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| CN118391705A true CN118391705A (en) | 2024-07-26 |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE694161A (en) * | 1966-02-17 | 1967-07-31 | ||
| FR2486234A1 (en) * | 1980-07-02 | 1982-01-08 | Cricket Sa | Gas flow meter and monitor with deformable membrane - has two housings separated by resilient membrane where gas source is connected directly to one housing and via limiter to other |
| DE102006022476B3 (en) * | 2006-05-13 | 2007-11-29 | Tyco Electronics Amp Gmbh | Connector for glow plug used in diesel engine, has slotted casing with external ring sections bridging over slots and forming clamping ring at its end face |
| WO2011147606A1 (en) * | 2010-05-27 | 2011-12-01 | Robert Bosch Gmbh | Laser-induced spark ignition for an internal combustion engine |
| CN110595721A (en) * | 2019-09-10 | 2019-12-20 | 中国空气动力研究与发展中心超高速空气动力研究所 | An ignition device for ultra-high-speed wind tunnel |
| CN214791171U (en) * | 2021-05-18 | 2021-11-19 | 北京东峰兴达耐火材料有限公司 | Internal combustion type torch |
| CN114688561A (en) * | 2022-04-06 | 2022-07-01 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | High-capacity thermal-strength gas generator taking air and alcohol as propellant |
| CN116066828A (en) * | 2023-02-09 | 2023-05-05 | 中国空气动力研究与发展中心空天技术研究所 | Torch igniter for igniting combustion type air heater body |
| CN117329361A (en) * | 2023-12-01 | 2024-01-02 | 中国空气动力研究与发展中心超高速空气动力研究所 | High-temperature high-pressure section sealing structure for wind tunnel, and mounting method and test method thereof |
| CN118150107A (en) * | 2024-05-09 | 2024-06-07 | 中国空气动力研究与发展中心超高速空气动力研究所 | High-temperature wind tunnel and wide-parameter operation method thereof |
-
2024
- 2024-06-27 CN CN202410840493.3A patent/CN118391705B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE694161A (en) * | 1966-02-17 | 1967-07-31 | ||
| FR2486234A1 (en) * | 1980-07-02 | 1982-01-08 | Cricket Sa | Gas flow meter and monitor with deformable membrane - has two housings separated by resilient membrane where gas source is connected directly to one housing and via limiter to other |
| DE102006022476B3 (en) * | 2006-05-13 | 2007-11-29 | Tyco Electronics Amp Gmbh | Connector for glow plug used in diesel engine, has slotted casing with external ring sections bridging over slots and forming clamping ring at its end face |
| WO2011147606A1 (en) * | 2010-05-27 | 2011-12-01 | Robert Bosch Gmbh | Laser-induced spark ignition for an internal combustion engine |
| CN110595721A (en) * | 2019-09-10 | 2019-12-20 | 中国空气动力研究与发展中心超高速空气动力研究所 | An ignition device for ultra-high-speed wind tunnel |
| CN214791171U (en) * | 2021-05-18 | 2021-11-19 | 北京东峰兴达耐火材料有限公司 | Internal combustion type torch |
| CN114688561A (en) * | 2022-04-06 | 2022-07-01 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | High-capacity thermal-strength gas generator taking air and alcohol as propellant |
| CN116066828A (en) * | 2023-02-09 | 2023-05-05 | 中国空气动力研究与发展中心空天技术研究所 | Torch igniter for igniting combustion type air heater body |
| CN117329361A (en) * | 2023-12-01 | 2024-01-02 | 中国空气动力研究与发展中心超高速空气动力研究所 | High-temperature high-pressure section sealing structure for wind tunnel, and mounting method and test method thereof |
| CN118150107A (en) * | 2024-05-09 | 2024-06-07 | 中国空气动力研究与发展中心超高速空气动力研究所 | High-temperature wind tunnel and wide-parameter operation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 周瑜: "高空来流条件下航空发动机双旋流燃烧室点火特性数值模拟", 推进技术 . 2022 , 43 (09), 22 February 2022 (2022-02-22), pages 2 * |
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| CN118391705B (en) | 2024-08-30 |
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