CN114435625B - High-temperature airflow simulation test method for engine air inlet channel suction - Google Patents
High-temperature airflow simulation test method for engine air inlet channel suction Download PDFInfo
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- CN114435625B CN114435625B CN202111667033.8A CN202111667033A CN114435625B CN 114435625 B CN114435625 B CN 114435625B CN 202111667033 A CN202111667033 A CN 202111667033A CN 114435625 B CN114435625 B CN 114435625B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D33/00—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for
- B64D33/02—Arrangements in aircraft of power plant parts or auxiliaries not otherwise provided for of combustion air intakes
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The application belongs to the technical field of high-temperature air flow simulation test of air inlet channel suction of an aircraft engine, and particularly relates to a high-temperature air flow simulation test method of air inlet channel suction of an engine, wherein the intensity of temperature and pressure distortion in an engine runner is controlled by adjusting the air flow and the temperature of high-temperature compressed air injected into the main air inlet channel and the inlet of the auxiliary air inlet channel through a main nozzle and an auxiliary nozzle, the range of a high-temperature area and the phase angle of the high-temperature compressed air in the engine runner are controlled by adjusting the injection direction of the high-temperature compressed air, and the injection speed of the high-temperature compressed air is adjusted, the temperature rise speed in the engine runner is controlled, and the corresponding temperature and pressure distortion in the engine air inlet channel is further caused.
Description
Technical Field
The application belongs to the technical field of high-temperature air flow simulation tests of air inlet channels of aircraft engines, and particularly relates to a high-temperature air flow simulation test method of air inlet channels of engines.
Background
When the aircraft takes off, the situation that the engine air inlet channel sucks high-temperature air flow exists, and the engine air inlet channel sucks high-temperature emission air flow, so that temperature and pressure distortion can be caused, the stability margin of the engine is reduced, and the anti-interference capability of the engine is reduced.
At present, in order to study the influence of high-temperature air flow sucked into an air inlet channel on the performance of an engine, a micro combustion cavity is arranged in the air inlet channel of the engine, fuel is introduced into the micro combustion cavity, the local part of the air inlet channel of the engine is heated by controlling the combustion state of the fuel in the micro combustion cavity, the temperature distortion of the high-temperature air flow sucked into the air inlet channel of the engine is simulated, and an inserting plate is arranged in the air inlet channel of the engine, and the pressure distortion of the high-temperature air flow sucked into the air inlet channel of the engine is simulated by adjusting the position of the inserting plate, so that the following defects exist in the technical scheme:
1) The effective control of the combustion state of the fuel in the micro combustion cavity is difficult to realize, and the accurate simulation of the temperature distortion intensity, the temperature rise rate, the high-temperature area range, the phase angle of the high-temperature area and the high-temperature duration time of the high-temperature airflow inhaled by the engine air inlet channel cannot be effectively realized;
2) The fuel in the micro combustion chamber is mostly hydrogen, the components generated by combustion are greatly different from the components of high-temperature air flow sucked by an engine air inlet channel, the accuracy of the test is affected, and a great safety risk exists;
3) By independently controlling the combustion state of fuel in the micro combustion chamber and changing the position of the plugboard, temperature and pressure distortion are simulated respectively, and the relationship between the temperature and the pressure distortion is weak, and the temperature and the pressure distortion are actually inconsistent with each other caused by high-temperature airflow sucked by an engine air inlet channel.
The present application has been made in view of the above-described technical drawbacks.
It should be noted that the above disclosure of the background art is only for aiding in understanding the inventive concept and technical solution of the present application, which is not necessarily prior art to the present patent application, and should not be used for evaluating the novelty and creativity of the present application in the case where no clear evidence indicates that the above content has been disclosed at the filing date of the present application.
Disclosure of Invention
The application aims to provide a simulation test method for high-temperature air flow sucked by an engine air inlet passage, which overcomes or alleviates at least one technical defect existing in the prior art.
The technical scheme of the application is as follows:
a method for simulating high-temperature airflow sucked by an engine air inlet channel comprises the following steps:
adjusting the main nozzle relative to the main engine intake and adjusting the auxiliary nozzle relative to the auxiliary engine intake to a predetermined orientation;
opening an exhaust steady flow valve, and communicating the inlet end of the air supply pipeline to a compressed air source so that compressed air is discharged through the exhaust steady flow pipeline;
opening the emptying temperature stabilizing valve, closing the air inlet valve, and after the flow rate of the compressed air flow is stable, gradually opening the air supply valve and the downstream valve to discharge the compressed air through the emptying temperature stabilizing pipeline, and adjusting the opening of the air exhaust temperature stabilizing valve to enable the compressed air in the air supply pipeline to reach the preset flow rate;
starting an air supply heater to heat the compressed air in the air supply pipeline, so that the temperature of the compressed air reaches a preset temperature;
after the temperature of the compressed air flow is stable, a preheating valve is opened, so that part of compressed air is discharged from a main nozzle and an auxiliary nozzle through a preheating pipeline, the main air inlet pipe, the auxiliary air inlet pipe and two auxiliary air inlet branches, and the main air inlet pipe, the auxiliary air inlet pipe, the two auxiliary air inlet branches and the main nozzle and the auxiliary nozzle are preheated;
closing the preheating valve, opening the air inlet valve at a preset speed, and closing the emptying temperature stabilizing valve at the same time, so that compressed air flows into the main air inlet pipe, the auxiliary air inlet pipe and the two auxiliary air inlet branches, and further, the compressed air is sprayed into the main air inlet pipe and the auxiliary air inlet pipe of the engine through the main nozzle and the auxiliary nozzle, and corresponding temperature and pressure distortion occurs in the air inlet pipe of the engine.
According to at least one embodiment of the present application, in the method for simulating and testing high-temperature airflow inhaled by the engine air inlet, the method further includes:
when temperature and pressure distortion in an air inlet channel of an engine reaches preset time or faults occur, an emptying temperature stabilizing valve is opened, and an air inlet valve is closed.
According to at least one embodiment of the present application, in the method for simulating and testing high-temperature airflow inhaled by the engine air inlet, the method further includes:
when temperature and pressure distortion in an engine air inlet channel reaches preset time or fails, the air supply heater is closed, the exhaust steady flow valve is opened, and the air supply valve and the downstream valve are gradually closed.
According to at least one embodiment of the present application, in the method for simulating and testing high-temperature airflow inhaled by the engine air inlet, the method further includes:
and adjusting the shutter in the main nozzle to a preset angle.
According to at least one embodiment of the present application, in the method for simulating and testing high-temperature airflow inhaled by the engine air inlet, the method further includes:
and adjusting a throttle of an inlet of an auxiliary air inlet passage of the engine to a preset state.
According to at least one embodiment of the present application, in the method for simulating and testing high-temperature airflow inhaled by the engine air inlet, the method further includes:
a rectifying orifice plate of a predetermined specification or a predetermined number of baffles are arranged on the auxiliary nozzle. According to at least one embodiment of the application, in the method for simulating the high-temperature air flow sucked by the engine air inlet channel, when the air supply heater is started, fuel oil is injected for combustion, compressed air in the air supply pipeline is heated, and the compressed air is mixed with the compressed air.
Drawings
FIG. 1 is a schematic diagram of a test apparatus for high temperature airflow intake in an aircraft engine inlet provided by an embodiment of the application;
FIG. 2 is a schematic view of a main nozzle and a part of the structure according to an embodiment of the present application;
FIG. 3 is a view in the A direction of FIG. 2;
FIG. 4 is a schematic diagram of an auxiliary nozzle matched with a rectifying orifice plate according to an embodiment of the present application;
FIG. 5 is a schematic view of the auxiliary nozzle and baffle according to an embodiment of the present application;
wherein:
1-an air supply pipeline; 2-an air supply valve; 3-a gas supply heater; 4-an exhaust steady flow pipeline; 5-an exhaust steady flow valve; 6, evacuating the temperature stabilizing pipeline; 7-evacuating the temperature stabilizing valve; 8-an air inlet pipeline; 9-an intake valve; 10-a main air inlet pipe; 11-main inlet valve; 12-an engine; 13-an auxiliary air inlet pipe; 14-auxiliary intake valve; 15-preheating the pipeline; 16-a preheating valve; 17-a gas supply flowmeter; 18-a supply expansion compensator; 19-a downstream valve; 20-a downstream expansion compensator; 21-a downstream filter; 22-evacuating the temperature stabilizing expansion compensator; 23-auxiliary intake air flow meter; 24-S type spray pipe; 25-main nozzle; 26-baffle; 27-an auxiliary air intake branch; 28-auxiliary spouts; 29-rectifying aperture plate.
For the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; further, the drawings are for illustrative purposes and the positional relationship thereof is limited to the illustrative description and should not be construed as limiting the present patent.
Detailed Description
In order to make the technical solution of the present application and its advantages more clear, the technical solution of the present application will be further and completely described in detail with reference to the accompanying drawings, it being understood that the specific embodiments described herein are only some of the embodiments of the present application, which are for explanation of the present application and not for limitation of the present application. It should be noted that, for convenience of description, only the part related to the present application is shown in the drawings, and other related parts may refer to the general design, and the embodiments of the present application and the technical features of the embodiments may be combined with each other to obtain new embodiments without conflict.
Furthermore, unless defined otherwise, technical or scientific terms used in the description of the application should be given the ordinary meaning as understood by one of ordinary skill in the art to which the application pertains. The terms "upper," "lower," "left," "right," "center," "vertical," "horizontal," "inner," "outer," and the like as used in the description of the present application are merely used for indicating relative directions or positional relationships, and do not imply that the devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and that the relative positional relationships may be changed when the absolute position of the object to be described is changed, thus not being construed as limiting the application. The terms "first," "second," "third," and the like, as used in the description of the present application, are used for descriptive purposes only and are not to be construed as indicating or implying any particular importance to the various components. The use of the terms "a," "an," or "the" and similar referents in the description of the application are not to be construed as limiting the amount absolutely, but rather as existence of at least one. As used in this description of the application, the terms "comprises," "comprising," or the like are intended to cover an element or article that appears before the term as such, but does not exclude other elements or articles from the list of elements or articles that appear after the term.
Furthermore, unless specifically stated and limited otherwise, the terms "mounted," "connected," and the like in the description of the present application are used in a broad sense, and for example, the connection may be a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements, and the specific meaning of the two elements can be understood by a person skilled in the art according to specific situations.
The application is described in further detail below with reference to fig. 1 to 5.
For the implementation of the high-temperature air flow simulation test method sucked by an engine air inlet channel, a test device is designed, and the test device comprises:
an air supply pipe 1 on which an air supply valve 2, an air supply expansion compensator 18, an air supply flowmeter 17, an air supply heater 3, a downstream valve 19, a downstream expansion compensator 20, and a downstream filter 21 are sequentially provided;
an exhaust steady flow pipeline 4, the inlet end of which is communicated with the air supply pipeline 1 and is positioned at the upstream part of the air supply valve 2, and an exhaust steady flow valve 5 is sequentially arranged on the exhaust steady flow pipeline;
an emptying temperature stabilizing pipeline 6, the inlet end of which is communicated with the outlet end of the air supply pipeline 1, and an emptying temperature stabilizing valve 7 and an emptying temperature stabilizing expansion compensator 22 are arranged on the pipeline;
an air inlet pipe 8, the inlet end of which is communicated with the outlet end of the air supply pipe 1, and an air inlet valve 9 is arranged on the air inlet pipe; the emptying temperature stabilizing valve 7 and the air inlet valve 9 are arranged in a linkage way, the air inlet valve 9 is quickly closed in the opening process of the emptying temperature stabilizing valve 7, and the emptying temperature stabilizing valve 7 is quickly opened in the opening process of the air inlet valve 9;
a main intake pipe 10, the inlet end of which is communicated with the outlet end of the intake pipe 8, on which a main intake valve 11 is provided;
an auxiliary air inlet pipe 13, the inlet end of which is communicated with the outlet end of the air inlet pipeline 8, and an auxiliary air inlet valve 14 and an auxiliary air inlet flowmeter 23 are sequentially arranged on the auxiliary air inlet pipe;
a preheating pipeline 15, the inlet end of which is communicated with the emptying temperature stabilizing pipeline 6 and is positioned at the downstream part of the emptying temperature stabilizing valve 7, the outlet end of which is communicated with the air inlet pipeline 8 and is positioned at the downstream part of the air inlet valve 9, and a preheating valve 16 is arranged on the preheating pipeline;
the inlet end of the S-shaped spray pipe 24 is connected with the outlet end of the main air inlet pipe 10 through a looper flange;
the main nozzle 25 is connected to the outlet end of the S-shaped spray pipe 24 through a looper flange and faces the inlet of the main air inlet channel of the engine 12, and the inside of the main nozzle is provided with a shutter with a wing-shaped cross section;
two auxiliary air inlet branches 27, the inlet ends of which are communicated with the outlet ends of the auxiliary air inlet pipes 13;
auxiliary nozzles 28 connected to the outlet ends of the two auxiliary air inlet branches 27, and provided with guide vanes inside to face the auxiliary air inlet of the engine 12;
a rectifying orifice 29 removably connectable to the auxiliary spout 28;
a plurality of baffles 26, when no rectifying orifice 29 is provided on the auxiliary spouts 28, may be detachably connected to the auxiliary spouts 28 to be able to partially block the auxiliary spouts 28.
Based on the test device, the method for simulating the high-temperature airflow sucked by the engine air inlet channel provided by the application comprises the following steps:
adjusting the main jet 25 relative to the main intake port inlet of the engine 12 and the auxiliary jet 28 relative to the auxiliary intake port inlet of the engine 12 to a predetermined orientation to control the high temperature range, high temperature range phase angle within the intake port of the engine 12;
opening an exhaust steady flow valve 5, and communicating the inlet end of the air supply pipeline 1 to a compressed air source to enable compressed air to be discharged through an exhaust steady flow pipeline 4;
opening the emptying temperature stabilizing valve 7, closing the air inlet valve 9, after the flow rate of the compressed air flow is stable, gradually opening the air supply valve 2 and the downstream valve 19 to discharge the compressed air through the emptying temperature stabilizing pipeline 6, and adjusting the opening of the air exhaust temperature stabilizing valve 5 to ensure that the compressed air in the air supply pipeline 1 can stably reach the preset flow rate so as to control the intensity of temperature and pressure distortion in an air inlet channel of the engine 12;
starting the air supply heater 3 to heat the compressed air in the air supply pipeline 1 so as to enable the temperature of the compressed air to reach a preset temperature;
the main air inlet valve 11 and the auxiliary air inlet valve 12 are opened to a preset valve position so as to realize the distribution of compressed air flow between the main air inlet pipe 10 and the auxiliary air inlet pipe 13, after the temperature of the compressed air flow is stable, the preheating valve 16 is opened, so that part of compressed air is discharged through the preheating pipeline 15, the main air inlet pipe 10, the auxiliary air inlet pipe 13 and the two auxiliary air inlet branches 27 through the main nozzle 25 and the auxiliary nozzle 28, and the two auxiliary air inlet branches 27 of the main air inlet pipe 10 and the auxiliary air inlet pipe 13 and the main nozzle 25 and the auxiliary nozzle 28 are preheated, thereby avoiding influencing the temperature rise rate in an engine runner;
closing the preheating valve 16, opening the air inlet valve 9 at a preset speed, closing the emptying temperature stabilizing valve 7, enabling compressed air to flow into the main air inlet pipe 10, the auxiliary air inlet pipe 13 and the two auxiliary air inlet branches 27, and further spraying the compressed air into the main air inlet pipe and the auxiliary air inlet pipe inlet of the engine 12 through the main nozzle 25 and the auxiliary nozzle 28 so as to control the temperature rise speed in the air inlet pipe of the engine 12, and enabling corresponding temperature and pressure distortion to occur in the air inlet pipe of the engine 12.
As for the simulation test method for high temperature air flow sucked into the engine air inlet disclosed in the above embodiment, those skilled in the art can understand that the design is that the intensity of temperature and pressure distortion occurring in the engine flow passage is controlled by adjusting the air flow and temperature of the high temperature compressed air injected into the main air inlet and the auxiliary air inlet of the engine 12 through the main nozzle 25 and the auxiliary nozzle 28, the range of the high temperature area and the phase angle of the high temperature area in the engine flow passage are controlled by adjusting the injection direction of the high temperature compressed air, the injection rate of the high temperature compressed air is adjusted, the temperature rising rate in the engine flow passage is controlled, and the corresponding temperature and pressure distortion occurs in the engine 12 air inlet.
As for the method for simulating the high-temperature air flow sucked into the air inlet of the engine disclosed in the above embodiment, those skilled in the art can also understand that the design is based on the stable flow rate of compressed air, the temperature of the compressed air is adjusted, after the temperature of the compressed air is stable, a small amount of compressed air is utilized to preheat the two auxiliary air inlet branches 27 of the main air inlet pipe 10 and the auxiliary air inlet pipe 13 and the main nozzle 25 and the auxiliary nozzle 28, so as to provide conditions for accurately controlling the temperature rising rate in the air inlet of the engine 12, and after the flow rate and the temperature of the compressed air are stable, a large amount of compressed air is sprayed into the inlets of the main air inlet and the auxiliary air inlet of the engine 12 through the main nozzle 25 and the auxiliary nozzle 28, so that the reliability of the test is ensured.
For the simulation test method for sucking high-temperature air flow into the engine air inlet channel disclosed in the above embodiment, those skilled in the art can also understand that the design of the method is that the emptying temperature stabilizing valve 7 and the air inlet valve 9 are linked, the air inlet valve 9 is quickly closed in the opening process of the emptying temperature stabilizing valve 7, and the emptying temperature stabilizing valve 7 is quickly opened in the opening process of the air inlet valve 9, so that the compressed air flow path can be conveniently switched.
For the method for simulating the high-temperature air flow sucked by the air inlet of the engine disclosed by the embodiment, those skilled in the art can also understand that the pressure distortion generated in the air inlet of the engine 12 is generated by the high-temperature air sucked by the air inlet of the engine 12, which is consistent with the actual situation, so that the accuracy of the test result can be ensured.
In some optional embodiments, the method for simulating the high-temperature air flow sucked by the engine air inlet further includes:
when temperature and pressure distortion occurs in an air inlet channel of the engine 12 for a preset time or faults occur, the emptying temperature stabilizing valve 7 is opened, and the air inlet valve 9 is closed.
In some optional embodiments, the method for simulating the high-temperature air flow sucked by the engine air inlet further includes:
after temperature and pressure distortion in the air inlet channel of the engine 12 reaches a preset time or fails, the air supply heater 3 is closed, the exhaust steady flow valve 5 is opened, and the air supply valve 2 and the downstream valve 19 are gradually closed.
In some optional embodiments, the method for simulating the high-temperature air flow sucked by the engine air inlet further includes:
the louvers in the main nozzle 25 are adjusted to a predetermined angle to adjust the angle and flow of compressed air injected into the inlet of the main intake duct of the engine 12, and to control the range of the high temperature zone in the engine flow passage, the phase angle of the high temperature zone, and the intensity of temperature and pressure distortions.
In some optional embodiments, the method for simulating the high-temperature air flow sucked by the engine air inlet further includes:
the throttle of the auxiliary intake port inlet of the engine 12 is adjusted to a predetermined state, which is set according to the intensity of pressure distortion that needs to be reached in the intake port of the engine 12.
In some optional embodiments, the method for simulating the high-temperature air flow sucked by the engine air inlet further includes:
a rectifying orifice plate 29 of a predetermined specification is arranged on the auxiliary nozzle 28, or a predetermined number of baffles 26 are arranged to adjust the direction and flow rate of compressed air injected into the auxiliary inlet of the engine 12, control the range of a high temperature area in the flow passage of the engine, the phase angle of the high temperature area, and the intensity of temperature and pressure distortion.
In some alternative embodiments, in the method for simulating the high-temperature airflow sucked by the engine air inlet, when the air supply heater 3 is started, fuel is injected for combustion, the compressed air in the air supply pipeline 1 is heated and mixed with the compressed air, and the obtained components are consistent with the components of the high-temperature airflow sucked by the engine air inlet in practice, so that the accuracy of the test is ensured.
In the description, each embodiment is described in a progressive manner, and each embodiment is mainly described by the differences from other embodiments, so that the same similar parts among the embodiments are mutually referred.
Having thus described the technical aspects of the present application with reference to the preferred embodiments shown in the drawings, it should be understood by those skilled in the art that the scope of the present application is not limited to the specific embodiments, and those skilled in the art may make equivalent changes or substitutions to the related technical features without departing from the principle of the present application, and those changes or substitutions will fall within the scope of the present application.
Claims (7)
1. The method for simulating the high-temperature airflow inhaled by the engine air inlet channel is characterized by comprising the following steps of:
adjusting the main jet (25) relative to the main intake port inlet of the engine (12), and adjusting the auxiliary jet (28) relative to the auxiliary intake port inlet of the engine (12) to a predetermined orientation;
opening an exhaust steady flow valve (5), and communicating the inlet end of the air supply pipeline (1) to a compressed air source to enable compressed air to be discharged through an exhaust steady flow pipeline (4);
opening the emptying temperature stabilizing valve (7), closing the air inlet valve (9) at the same time, after the flow of the compressed air is stable, gradually opening the air supply valve (2) and the downstream valve (19) to discharge the compressed air through the emptying temperature stabilizing pipeline (6), and adjusting the opening of the air exhaust temperature stabilizing valve (5) to enable the compressed air in the air supply pipeline (1) to reach the preset flow;
starting an air supply heater (3) to heat compressed air in the air supply pipeline (1) so that the temperature of the compressed air reaches a preset temperature;
after the air flow temperature of the compressed air is stable, a preheating valve (16) is opened, so that part of the compressed air is discharged from a main nozzle (25) and an auxiliary nozzle (28) through a preheating pipeline (15), the main air inlet pipe (10), the auxiliary air inlet pipe (13) and two auxiliary air inlet branches (27), and the main air inlet pipe (10) and the auxiliary air inlet pipe (13) as well as the main nozzle (25) and the auxiliary nozzle (28) are preheated;
closing a preheating valve (16), opening an air inlet valve (9) at a preset speed, and closing an emptying temperature stabilizing valve (7) simultaneously, so that compressed air flows into a main air inlet pipe (10), an auxiliary air inlet pipe (13) and two auxiliary air inlet branches (27), and further, a main jet (25) and an auxiliary jet (28) are jetted into a main air inlet pipe and an auxiliary air inlet pipe inlet of an engine (12), so that corresponding temperature and pressure distortion occurs in the air inlet pipe of the engine (12).
2. The method for simulating high-temperature air flow sucked into an engine air inlet according to claim 1, wherein,
further comprises:
when temperature and pressure distortion in an air inlet channel of an engine (12) reaches preset time or faults occur, an emptying temperature stabilizing valve (7) is opened, and an air inlet valve (9) is closed.
3. The method for simulating high-temperature air flow sucked into an engine air inlet according to claim 2, wherein,
further comprises:
after temperature and pressure distortion in an air inlet channel of an engine (12) reaches preset time or faults occur, the air supply heater (3) is closed, the exhaust steady flow valve (5) is opened, and the air supply valve (2) and the downstream valve (19) are gradually closed.
4. The method for simulating high-temperature air flow sucked into an engine air inlet according to claim 1, wherein,
further comprises:
the shutter in the main nozzle (25) is adjusted to a predetermined angle.
5. The method for simulating high-temperature air flow sucked into an engine air inlet according to claim 1, wherein,
further comprises:
a throttle of an auxiliary intake duct inlet of an engine (12) is adjusted to a predetermined state.
6. The method for simulating high-temperature air flow sucked into an engine air inlet according to claim 1, wherein,
further comprises:
a rectifying orifice plate (29) of a predetermined specification or a predetermined number of baffles (26) are provided on the auxiliary nozzle (28).
7. The method for simulating high-temperature air flow sucked into an engine air inlet according to claim 1, wherein,
when the air supply heater (3) is started, fuel oil is injected for combustion, compressed air in the air supply pipeline (1) is heated, and the compressed air is mixed with the compressed air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111667033.8A CN114435625B (en) | 2021-12-31 | 2021-12-31 | High-temperature airflow simulation test method for engine air inlet channel suction |
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| CN202111667033.8A CN114435625B (en) | 2021-12-31 | 2021-12-31 | High-temperature airflow simulation test method for engine air inlet channel suction |
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| CN114435625B true CN114435625B (en) | 2023-09-05 |
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