CN111486477A - Mixing hole adjusting system and method for adjusting outlet temperature distribution of combustion chamber - Google Patents
Mixing hole adjusting system and method for adjusting outlet temperature distribution of combustion chamber Download PDFInfo
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- CN111486477A CN111486477A CN202010263611.0A CN202010263611A CN111486477A CN 111486477 A CN111486477 A CN 111486477A CN 202010263611 A CN202010263611 A CN 202010263611A CN 111486477 A CN111486477 A CN 111486477A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/28—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply
- F23R3/286—Continuous combustion chambers using liquid or gaseous fuel characterised by the fuel supply having fuel-air premixing devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R3/00—Continuous combustion chambers using liquid or gaseous fuel
- F23R3/02—Continuous combustion chambers using liquid or gaseous fuel characterised by the air-flow or gas-flow configuration
- F23R3/04—Air inlet arrangements
- F23R3/10—Air inlet arrangements for primary air
- F23R3/12—Air inlet arrangements for primary air inducing a vortex
Abstract
The invention discloses a mixing hole adjusting system and method for adjusting the temperature distribution of an outlet of a combustion chamber, belonging to the field of combustion of gas turbines; when high thrust, because turbine director inlet temperature is higher, control terminal calculates the required spatial position of flexible mixing hole under the current operating mode according to the combustion chamber inlet air total pressure of demarcating in advance and the corresponding relation of flexible mixing hole space attitude angle, and change hydraulic pressure regulation signal transmission to mechanical structure in, utilize the hydraulic pressure principle to actuate respectively in telescopic strut and rotatory branch, by the flexible mixing hole depth of insertion of telescopic strut's elongation control, the rotation angle of mixing hole is controlled by the flexible volume of rotatory branch, both cooperate the efflux that can change mixing hole and penetrate degree of depth and efflux inclination each other, reach the purpose of adjusting combustion chamber export temperature distribution, greatly increased turbine director's life and reduction turbine director's design requirement.
Description
Technical Field
The invention belongs to the field of combustion of gas turbines, and relates to a mechanical adjusting system for adjusting the temperature distribution of an outlet of a combustion chamber, in particular to a mixing hole adjusting system and a mixing hole adjusting method for adjusting the temperature distribution of the outlet of the combustion chamber.
Background
At present, due to the fact that requirements on the performance of a combustion chamber of a gas turbine are higher and higher, the temperature of a front opening of the turbine is higher and higher due to the fact that the gas turbine develops towards the direction of high temperature and high pressure. However, due to the limitations of the thermal resistance and fatigue resistance of the material, in large operating conditions, if the quality of the combustor exit temperature distribution is poor, local hot spots/hot spots occur, which directly lead to turbine vane ablation, and the ablation phenomenon is generally a regular, repetitive concentration at a certain radius. The ablation phenomenon is mainly caused by the outlet temperature distribution of the combustion chamber, and the outlet temperature of the combustion chamber is mainly determined by the mixing holes in the flame tube through adjusting jet mixing. After the structure of the combustion chamber is determined, the flow distribution ratio of each position under any working condition is fixed, the jet penetration depth of each mixing hole is relatively unchanged, and when the temperature distribution of the outlet of the combustion chamber is unreasonable, high temperature repeatedly and continuously occurs on a certain radius of the turbine, so that a turbine guider/movable blade is ablated.
Disclosure of Invention
Aiming at the defects, the invention provides a mechanical system for adjusting the mixing holes of the combustion chamber, which achieves the effect of adjusting the temperature distribution of the outlet of the combustion chamber by changing the jet penetration depth and the jet inclination angle of the mixing holes; through adjustable combustion chamber export temperature distribution parameter, improve turbine import temperature quality to improve turbine life, reduce the design degree of difficulty to turbine heat protection.
The invention is realized by the following steps:
a mixing hole adjusting system for adjusting the temperature distribution of an outlet of a combustion chamber comprises a combustion chamber casing and a combustion chamber flame tube arranged in the combustion chamber casing, wherein telescopic mixing holes are respectively and movably arranged in an inner duct and an outer duct of the combustion chamber flame tube; the telescopic mixing hole is provided with a first telescopic strut and a second telescopic strut respectively in the vertical direction of a rotary shaft of the telescopic mixing hole, the first telescopic strut and the second telescopic strut are used for controlling the radial linear motion of the telescopic mixing hole, and the insertion depth of the telescopic mixing hole is controlled by the elongation of the first telescopic strut and the second telescopic strut; the spatial position of the telescopic mixing hole is controlled by the telescopic amount of the telescopic supporting rod and the rotary supporting rod, the telescopic supporting rod controls the radial linear motion of the telescopic mixing hole, and the relative position of the telescopic mixing hole penetrating into the flame tube of the combustion chamber is changed; the rotating support rod controls the rotating angle of the telescopic mixing hole; the telescopic supporting rod also plays a supporting role for the telescopic mixing hole.
The telescopic mixing hole is connected with the rotary supporting rod through the rotary supporting rod rotating shaft, and the rotating angle of the mixing hole is controlled by using the telescopic quantity of the rotary supporting rod; the first telescopic supporting rod, the second telescopic supporting rod and the rotating supporting rod are matched with each other to change the jet penetration depth and the jet inclination angle of the mixing hole. Extension and rotation of the telescopic mixing hole can change the temperature distribution of the outlet of the combustion chamber, improve the temperature quality of the outlet of the combustion chamber, reduce or improve the phenomenon that a certain position of the turbine guider is continuously ablated by high temperature, solve the problem of ablation of the turbine guider caused by the concentration and continuity of the highest temperature of the traditional combustion chamber, and greatly reduce the heat-proof design difficulty of the turbine guider.
Furthermore, the telescopic mixing hole is connected with a hydraulic main of the telescopic strut of the culvert at an outer duct of the combustion chamber casing by utilizing the first telescopic strut and the second telescopic strut; the telescopic mixing hole is connected with a hydraulic main path of the outer culvert rotating support rod through the rotating support rod in an outer culvert of the combustion chamber casing. The telescopic mixing hole is connected with a hydraulic main path of the inner culvert telescopic strut in an inner culvert of the combustion chamber casing by using a first telescopic strut and a second telescopic strut; the telescopic mixing hole is connected with a hydraulic main path of the inner culvert rotary supporting rod in an inner culvert of the combustion chamber casing by using the rotary supporting rod. The spatial position of the telescopic mixing hole is fixed through a telescopic supporting rod and a rotary supporting rod, the telescopic supporting rod and the rotary supporting rod penetrate through a casing to be connected with respective hydraulic mechanisms, and the three-dimensional attitude angle of the telescopic mixing hole is changed through the extension and the shortening of the supporting rod.
Furthermore, the first telescopic supporting rod and the second telescopic supporting rod are connected with the control mixing hole through hinges. The telescopic mixing hole needs to rotate around the rotation axis vector direction of the telescopic mixing hole, so the connection mode of the telescopic support rod and the telescopic mixing hole is selected to be hinged.
Furthermore, the rotating support rod is connected with the telescopic mixing hole through a simple beam device, namely a hinged support structure is added on the mixing hole, and the rotating support rod rotates around the rotating shaft direction of the rotating support rod of the hinged support. The rotary supporting rod and the telescopic mixing hole are fixed through the hinged support, so that the telescopic mixing hole can rotate around the rotary supporting rod in the rotary shaft direction.
Furthermore, a diffuser is arranged on the combustion chamber casing according to the incoming flow direction of air; the combustor flame tube is sequentially provided with a cap and a swirler according to the incoming flow direction of air; the combustion chamber flame tube is also provided with a main combustion hole.
The invention also discloses an adjusting method of the mixing hole adjusting system for adjusting the temperature distribution of the outlet of the combustion chamber, which is characterized by comprising the following steps:
marking three-dimensional attitude angles, namely an insertion depth and a rotation angle, of telescopic mixing holes corresponding to the inlet pressure of a combustion chamber and the flow of fuel oil under all working conditions, and establishing a set of control algorithm of the inlet pressure of the combustion chamber and the spatial positions of the telescopic mixing holes at a control terminal;
during high thrust, because the inlet temperature of the turbine guider is high, the control terminal calculates the required spatial position of the telescopic mixing hole under the current working condition according to the corresponding relation between the total pressure of inlet air of the combustion chamber calibrated in advance and the spatial attitude angle of the telescopic mixing hole, converts the spatial position into a hydraulic adjusting signal and transmits the hydraulic adjusting signal to the mechanical structure, respectively acts on the first telescopic supporting rod, the second telescopic supporting rod and the rotating supporting rod by utilizing the hydraulic principle, controls the insertion depth of the telescopic mixing hole by the elongation of the first telescopic supporting rod and the second telescopic supporting rod, and controls the rotating angle of the mixing hole by the elongation of the rotating supporting rod;
the first telescopic supporting rod and the second telescopic supporting rod extend to push the telescopic mixing holes to move inwards, and the cutting effect of the mixing jet air on the high-temperature gas is controlled; the rotating support rod keeps the original length, and a rotating pulling force is generated on the mixing hole, so that the telescopic mixing hole rotates, and the purpose of adjusting the temperature distribution of the outlet is achieved;
and under a small working condition, the telescopic mixing holes are arranged in the inner duct and the outer duct of the combustion chamber and are close to the outer wall surface of the flame tube.
According to the method, the control terminal calculates the spatial geometric attitude angle parameter of the telescopic mixing hole required under the current working condition according to the corresponding relation between the inlet pressure parameter of the combustion chamber and the insertion depth and the rotation angle of the telescopic mixing hole, converts the spatial geometric attitude angle parameter into a hydraulic adjusting signal and transmits the hydraulic adjusting signal to a mechanical structure, pushes the telescopic supporting rod out by utilizing the hydraulic principle, pushes the mixing hole to move into a flame tube, and changes the insertion depth of the telescopic mixing hole into the flame tube; if the rotating support rod is continuously controlled to be shortened, the jet flow direction of the telescopic mixing hole can be rotated, the mutual mixing of air and high-temperature main flow gas is changed, the temperature distribution of the outlet of the combustion chamber is changed, the temperature distribution quality of the inlet of the turbine is improved, and the purpose of prolonging the service life of the turbine guider/movable blade is achieved.
Compared with the prior art, the invention has the beneficial effects that:
1) according to the telescopic mixing hole adjusting system for adjusting the temperature distribution of the outlet of the combustion chamber of the gas turbine, the temperature distribution of the outlet of the combustion chamber is adjusted by adjusting the insertion depth and the rotation angle of the mixing hole, so that the controllability of the temperature distribution of the outlet of the combustion chamber is realized;
2) under a large working condition, the penetration depth of the jet flow of the mixing holes can be increased by increasing the depth of the telescopic mixing holes inserted into the flame tube, the cutting effect on transversely flowing high-temperature gas is greatly improved compared with that of a traditional combustion chamber, the effect of improving the temperature distribution quality of an outlet of the combustion chamber is achieved, and the service life of a turbine is prolonged;
3) when big operating mode, through the rotation angle of the flexible mixing hole of adjustment, can change mixing hole efflux direction, make the efflux direction change about vertical direction, reach and improve combustion chamber export temperature distribution quality effect, promote the life of turbine.
Drawings
FIG. 1 is a state of a telescoping dilution hole adjustment system for adjusting outlet temperature distribution according to an embodiment of the present invention when not in use;
FIG. 2 is a block diagram of an embodiment of the present invention illustrating a blending hole tuning system for adjusting the outlet temperature profile in a "State 1" state;
FIG. 3 is a blending hole adjustment system enabling "State 2" for adjusting the outlet temperature profile in an embodiment of the present invention;
FIG. 4 is a non-rotational state and a rotational state of a dilution hole in a dilution hole adjusting system for adjusting an outlet temperature distribution according to the present invention;
FIG. 5 is a schematic view of the hinged support of the dilution hole rotating support rod of the present invention adjusting the distribution of the outlet temperature profile;
FIG. 6 is a schematic diagram of the intelligent control system of the conditioning system of the present invention.
The device comprises a combustion chamber flame tube 1, a combustion chamber casing 2, a culvert rotating support rod 3, a culvert telescopic support rod 4, a main combustion hole 5, a swirler 6, a cap 7, a diffuser 8, a telescopic support rod I9, a telescopic mixing hole 10, a telescopic support rod II 11, a rotating support rod 12, an inner culvert telescopic support rod 13, an inner culvert rotating support rod 14, a rotary support rod 001, a rotary support rod rotating shaft 002, a telescopic mixing hole rotating shaft 003, a telescopic mixing hole axial direction 004 and a hinged support.
Detailed Description
In order to make the objects and effects of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings. It should be noted that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, which is a schematic view of an inactivated state of a telescopic mixing hole adjusting system for adjusting the temperature distribution at the outlet of a combustion chamber, according to the present invention, a telescopic mixing hole 10 is directly opposite to a mixing hole on a flame tube of a conventional combustion chamber, and in a small operating condition, the mixing hole is disposed in an inner duct and an outer duct, and the spatial position of the mixing hole is determined by the telescopic amount of a first telescopic strut 9, a second telescopic strut (11) and a rotary strut 12; when the fuel flow output by increasing the thrust is required to be increased and the temperature of the outlet of the combustion chamber is increased, according to the corresponding relation between the total pressure of the combustion chamber at different inlets and the temperature distribution required by the outlet of the combustion chamber, the jet depth and the jet angle required by the telescopic mixing hole 10 under the current working condition are calculated in the control terminal and are converted into an adjusting signal of a hydraulic mechanical system, the first telescopic supporting rod 9 and the second telescopic supporting rod 11 connected with the telescopic mixing hole 10 are pushed to extend by utilizing hydraulic energy, the telescopic mixing hole 10 is driven to move towards the flame tube of the combustion chamber, the penetration depth of the jet flow of the mixing hole is changed, the mixing and intercepting effects of high-temperature fuel gas are changed, and the purpose of improving the temperature distribution of the outlet of the combustion chamber is achieved. The spatial position of the dilution holes is shown in FIG. 2, and the dilution hole adjustment system for adjusting the outlet temperature distribution is activated in "State 1" in which the telescopic dilution holes 10 have been partially inserted into the liner. If the outlet temperature distribution quality needs to be improved continuously, the jet air quality and the jet inclination angle of the mixing holes can be increased, at the moment, the control terminal transmits an adjusting signal to the culvert rotating strut hydraulic main path 3 and the culvert telescopic strut hydraulic main path 14, the rotating struts 12 are controlled to shrink so that the attitude angle of the telescopic mixing holes 10 is changed, the state of the combustion chamber is shown in fig. 3, a state 2 is started for adjusting the mixing hole adjusting system for adjusting the outlet temperature distribution, after the telescopic mixing holes rotate, the mixing air flow of the mixing holes is increased by changing the flow coefficient of the mixing holes, the mixing jet angle is changed, the adjustment of the outlet temperature distribution of the combustion chamber is further realized through the two aspects, and the spatial position of the mixing holes is shown in fig. 3.
As shown in fig. 4, the shortening of the rotating rod 12 rotates the telescopic dilution hole 10 about the telescopic dilution hole rotating shaft 002, so that the telescopic dilution hole axis direction 003 of the telescopic dilution hole 10 is changed. Because the shortening of the rotating rod 12 makes the telescopic mixing hole 10 mechanically rotate around the direction of the rotating shaft 002 of the telescopic mixing hole, the rotating rod 12 and the telescopic mixing hole 10 cannot be fixedly connected, but are connected by a simply supported beam device, a hinge support 004 structure is added on the mixing hole, and the rotating rod 12 can rotate around the rotating central axis 001 of the hinge support 004, as shown in fig. 5.
There are two main modes of regulating the outlet temperature profile, one of which is: the temperature distribution required under the current working condition can be achieved only by changing the penetration depth of the telescopic mixing hole 10, additional rotation adjustment is not needed, and if the penetration depth is deepened and the quality requirement of the temperature distribution at the outlet of the combustion chamber cannot be met, the steering device is started again. In order to guarantee that the telescopic mixing hole 10 can be accurately inserted into the flame tube 1, the first telescopic supporting rod 9, the second telescopic supporting rod 11 and the steering supporting rod 12 need to be extended synchronously, the mixing hole 10 is guaranteed to move in a translation mode and does not move in a rotation mode, and the pressure in a rotary hydraulic middle path is reduced at the later stage, so that the rotary supporting rod 12 is shortened, the mixing hole only moves in a rotation mode and does not move in a translation mode. The second adjustment mode is to change the penetration depth and the jet inclination angle simultaneously, the telescopic supporting rods 9 and 11 extend to actuate the telescopic mixing holes 10 to move towards the flame tube 1, and the rotary supporting rod 12 keeps the original length, so that a rotary pulling force is generated on the telescopic mixing holes, the telescopic mixing holes are rotated, and the purpose of improving the outlet temperature distribution quality of the combustion chamber is achieved.
The working process of the invention is shown in fig. 6, and specifically includes marking three-dimensional attitude angles, namely, insertion depth and rotation angle, of telescopic mixing holes corresponding to combustion chamber inlet pressure and fuel flow under all working conditions, and establishing a set of control algorithm of combustion chamber inlet pressure and telescopic mixing hole spatial position at a control terminal. The air flow mode at the head of the combustion chamber of the gas turbine is the same as that of the combustion chamber of the traditional engine, and the air is divided into two paths after passing through a diffuser under each working condition: one part enters the flame tube through the swirler at the head part of the combustion chamber, and the rest part flows into the flame tube from the main combustion hole, the mixing hole and the small cooling hole through the inner duct. When the temperature distribution of the outlet of the combustion chamber needs to be adjusted, the control terminal calculates the current required fuel flow according to the total pressure of the inlet of the combustion chamber, then calculates the space attitude angle required by the telescopic mixing hole, namely the insertion depth and the rotation angle of the telescopic mixing hole, and converts the space attitude angle into an adjusting signal to be transmitted to the hydraulic mechanical system, the mechanical system controls the hydraulic support rod to extend by utilizing hydraulic energy, so that the telescopic mixing hole gradually moves towards the flame tube of the combustion chamber, and the temperature distribution of the outlet of the combustion chamber is adjusted by changing the jet penetration depth of the telescopic mixing hole; if the required outlet temperature distribution cannot be obtained by changing the penetration depth, the rotary hydraulic device can be started again, and the purpose of further improving the outlet temperature distribution of the combustion chamber is achieved by changing the jet flow direction of the telescopic mixing hole.
According to the invention, the telescopic mixing holes are arranged at the original mixing hole positions, and when the burner is operated in a small state, the telescopic mixing holes are positioned in the inner duct and the outer duct of the combustion chamber and cannot be inserted into the flame tube; the temperature is low, and the thermal shock damage to the turbine guide is small; when the gas turbine is in a large state, namely the temperature of a turbine front inlet is increased, the temperature of a combustion chamber outlet is generally higher due to the larger fuel flow, the temperature distribution of combustion gas at the combustion chamber outlet cannot meet the temperature distribution required by a turbine inlet, and higher temperature/local hot spots occur at certain positions, and the thermal shock of a turbine guider/movable blades in high-temperature areas can directly cause ablation of turbine parts. In order to solve the problem that a turbine part is likely to have concentrated ablation in a high-temperature area and enable the jet flow of the mixing hole to obtain a better mixing effect, the invention realizes the technical means that the insertion depth and the rotation angle of the telescopic mixing hole are calculated and adjusted through the control terminal according to the total pressure parameter of the inlet of the combustion chamber, the outlet temperature distribution is determined by mutually mixing the main stream gas temperature and the mixing effect of the jet flow of the mixing hole, the penetration depth and the jet flow inclination angle of the air jet flow of the mixing hole are adjusted by controlling the three-dimensional attitude angle of the telescopic mixing hole, the outlet temperature distribution quality of the combustion chamber is improved, and the effect of adjusting the outlet temperature distribution of the combustion chamber according to the total pressure.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.
Claims (6)
1. A mixing hole adjusting system for adjusting the temperature distribution of an outlet of a combustion chamber comprises a combustion chamber casing (2) and a combustion chamber flame tube (1) arranged in the combustion chamber casing, and is characterized in that telescopic mixing holes (10) are respectively and movably arranged in an inner duct and an outer duct of the combustion chamber flame tube (1);
the telescopic mixing hole (10) is provided with a first telescopic support rod (9) and a second telescopic support rod (11) in the vertical direction of a rotary shaft (002) of the telescopic mixing hole respectively, the first telescopic support rod (9) and the second telescopic support rod (11) are used for controlling the radial linear motion of the telescopic mixing hole (10), and the insertion depth of the telescopic mixing hole (10) is controlled by the extension amount of the first telescopic support rod (9) and the second telescopic support rod (11);
the telescopic blending holes (10) are connected with a rotary support rod (12) through a rotary support rod rotating shaft (001), and the rotating angle of the blending holes (10) is controlled by using the telescopic quantity of the rotary support rod (12);
the first telescopic supporting rod (9), the second telescopic supporting rod (11) and the rotating supporting rod (12) are matched with each other to change the jet penetration depth and the jet inclination angle of the mixing hole.
2. The dilution hole adjusting system for adjusting the temperature distribution at the outlet of the combustion chamber according to claim 1, wherein the telescopic dilution hole (10) is connected to the hydraulic manifold (4) of the telescopic strut at the bypass of the combustion chamber casing (2) by means of a first telescopic strut (9) and a second telescopic strut (11); the telescopic mixing hole (10) is connected with a hydraulic main line (3) of the culvert rotary support rod in an outer culvert of the combustion chamber casing (2) by using the rotary support rod (12).
3. The dilution hole adjusting system for adjusting the temperature distribution at the outlet of a combustion chamber according to claim 1, wherein the telescopic dilution hole (10) is connected to a hydraulic manifold (13) of a telescopic inner strut in an inner duct of the combustion chamber casing (2) by means of a first telescopic strut (9) and a second telescopic strut (11); the telescopic mixing hole (10) is connected with a hydraulic main line (14) of an inner culvert rotary supporting rod in an inner culvert of the combustion chamber casing (2) by using the rotary supporting rod (12).
4. The system for adjusting the temperature distribution at the outlet of the combustion chamber as claimed in claim 1, wherein the first telescopic strut (9), the second telescopic strut (11) and the control mixing hole (10) are hinged.
5. The dilution hole regulation system for regulating the temperature distribution at the outlet of a combustor as claimed in claim 1, wherein the combustor casing (2) is provided with a diffuser (8) in the direction of the incoming air flow; the combustor flame tube (1) is sequentially provided with a cap (7) and a swirler (6) according to the incoming air flow direction; the combustion chamber flame tube (1) is also provided with a main combustion hole (5).
6. A method for adjusting a dilution hole adjusting system for adjusting the outlet temperature profile of a combustion chamber according to any one of claims 1 to 5, wherein the method comprises:
marking three-dimensional attitude angles, namely an insertion depth and a rotation angle, of telescopic mixing holes corresponding to the inlet pressure of a combustion chamber and the flow of fuel oil under all working conditions, and establishing a set of control algorithm of the inlet pressure of the combustion chamber and the spatial positions of the telescopic mixing holes at a control terminal;
during high thrust, because the inlet temperature of the turbine guider is high, the control terminal calculates the required spatial position of the telescopic mixing hole (10) under the current working condition according to the corresponding relation between the total pressure of inlet air of the combustion chamber calibrated in advance and the spatial attitude angle of the telescopic mixing hole (10), converts the spatial position into a hydraulic adjusting signal and transmits the hydraulic adjusting signal to a mechanical structure, respectively actuates the first telescopic supporting rod (9), the second telescopic supporting rod (11) and the rotating supporting rod (12) by utilizing a hydraulic principle, controls the insertion depth of the telescopic mixing hole (10) by the extension amount of the first telescopic supporting rod (9) and the second telescopic supporting rod (11), and controls the rotating angle of the mixing hole (10) by the extension amount of the rotating supporting rod (12);
the first telescopic supporting rod (9) and the second telescopic supporting rod (11) extend to push the telescopic mixing holes (10) to move inwards, and the cutting effect of mixing jet air on high-temperature gas is controlled; the rotating support rod (12) keeps the original length, and a rotating tensile force is generated on the blending hole, so that the telescopic blending hole (10) rotates, and the purpose of adjusting the temperature distribution of the outlet is achieved;
when the working condition is small, the telescopic mixing holes (10) are arranged in the outer duct in the combustion chamber and are close to the outer wall surface of the flame tube.
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| CN112696710A (en) * | 2020-12-29 | 2021-04-23 | 中国航发沈阳发动机研究所 | Method and system for determining size of mixing hole of flame tube with funnel |
| CN112696710B (en) * | 2020-12-29 | 2022-11-22 | 中国航发沈阳发动机研究所 | Method and system for determining size of mixing hole of flame tube with funnel |
| CN113048511A (en) * | 2021-02-03 | 2021-06-29 | 南京航空航天大学 | Afterburner external culvert mixing device that AI was regulated and control |
| CN114110664A (en) * | 2021-10-29 | 2022-03-01 | 南京航空航天大学 | Plasma synthetic jet combustion chamber |
| CN114321978A (en) * | 2021-11-29 | 2022-04-12 | 南京航空航天大学 | Diffuser outlet flow distribution intelligent adjusting system and adjusting method |
| CN114321978B (en) * | 2021-11-29 | 2022-10-21 | 南京航空航天大学 | Diffuser outlet flow distribution intelligent adjusting system and adjusting method |
| CN115325566A (en) * | 2022-07-05 | 2022-11-11 | 中国航发湖南动力机械研究所 | Mixing air inlet structure of combustor flame tube and mounting method thereof |
| CN115289502A (en) * | 2022-07-16 | 2022-11-04 | 哈尔滨工程大学 | Special-shaped mixing hole mechanism and method for adjusting mixing gas amount of flame tube of combustion chamber |
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