A process inlet duct temperature distortion test system and test method

Abstract

The application provides a process inlet duct temperature distortion test system and test method, and belongs to the technical field of aero-engine test. The system comprises: an inlet duct, a gas generating device, a fuel supply device, a combustion-supporting gas supply device, a process gas supply device and a control device. After fuel is mixed with a certain proportion of combustion-supporting gas and combusted in a combustor, high-temperature gas is introduced into the inlet duct through a flame guide assembly and uniformly mixed with high-speed cold air in the inlet duct. Other combustors can not work, and the corresponding area is still cold air from the inlet of the inlet duct. Cold and hot air flows into the engine at the same time, a distortion temperature field is formed at the inlet of the engine, and the simulation of the temperature distortion test parameters of the inlet cross section of the engine power source is realized. The temperature rise rate is adjusted by controlling the fuel supply rate and other modes, and the high-temperature rise rate temperature distortion test of different requirements can be realized.

Description

Technical Field

[0001] The present application relates to the field of aero-engine testing, and in particular to a process inlet duct temperature distortion testing system and testing method. Background Art

[0002] During takeoff, an aircraft's engine power source may ingest high-temperature exhaust gases or vapors, or the tail plume from a weapon launch during combat. This can cause temperature distortion at the engine power source inlet, reducing the engine's stability margin. When this temperature distortion exceeds the engine power source's stability margin, surge occurs, seriously impacting flight safety. To verify the impact of high-temperature exhaust gases or vapors on engine temperature distortion, a temperature distortion test is typically performed on the engine.

[0003] Existing engine temperature distortion test systems can simulate and reproduce the combined distortion, stability margin loss, and even surge caused by the engine power source inhaling high-temperature combustion gas. However, they can usually only simulate the high-temperature zone within a qualitative range and cannot quantitatively control indicators such as the high-temperature zone range and high-temperature rise rate. In addition, the temperature rise rate is relatively low, generally not exceeding 100K / s.

[0004] In order to achieve quantitative control of the high temperature zone range and temperature rise rate indicators, a process inlet duct temperature distortion test system or method is needed. Summary of the Invention

[0005] The purpose of this application is to provide a process inlet temperature distortion test system and test method to solve or alleviate at least one problem in the background technology.

[0006] On the one hand, the technical solution of the present application is: a process inlet temperature distortion test system, comprising:

[0007] air intake;

[0008] A gas generator is used to generate high-temperature gas and introduce it into the intake duct, where it is mixed with the cold air in the intake duct to create temperature distortion in the intake duct;

[0009] A fuel supply device, the fuel supply device comprising a fuel supply system and a fuel regulating system. The fuel supply system is used to supply high-pressure fuel at a predetermined pressure and flow rate required for the test to the gas generator, and the fuel regulating system is used to regulate and control the flow rate or pressure of the supplied high-pressure fuel.

[0010] A combustion-supporting gas supply device, comprising a combustion-supporting gas source and a pressure regulating and delivering unit, for providing a combustion-supporting gas of a predetermined proportion required for the working conditions for generating high-temperature gas by the gas generating device;

[0011] A process gas supply device, comprising a process gas source, a pressurized gas regulating unit, a valve-controlled gas regulating unit, and a purge gas regulating unit. The process gas source is connected to a fuel supply device and a oxidizing gas supply device through the pressurized gas regulating unit, the valve-controlled gas regulating unit, and the purge gas regulating unit, respectively, to meet the needs of the fuel supply device for supplying pressurized process gas, the needs of the pressure regulating and conveying unit, and the purge needs of the oxidizing gas pipeline;

[0012] A control device connected to the gas generator, the fuel supply device, the supporting gas supply device and the supporting gas supply device, for realizing valve and ignition control and measuring pressure, flow and temperature rise;

[0013] The measuring device extends into the intake duct and is used to measure the short-term change of the engine temperature rise.

[0014] Preferably, the gas generating device comprises a burner and a flame guide assembly, the burner is arranged outside the air inlet duct, and the flame guide assembly is connected to the outlet of the burner and extends deep into the interior of the air inlet duct.

[0015] Preferably, the flame guide assemblies are matched with the burners one by one, and the flame guide assemblies are evenly arranged on the circumference of the air inlet duct.

[0016] Preferably, the number of flame guide assemblies arranged on the air inlet duct is determined according to the temperature rise change requirements of the engine, and the flame guide assembly is provided with injection holes. The number of rows of injection holes, the number of each row and the length of the flame guide assembly are set to ensure the uniformity of the temperature field after mixing.

[0017] Preferably, the fuel supply system includes a fuel storage tank, a fuel supply front shut-off valve and a fuel supply rear shut-off valve provided at the inlet and outlet of the fuel storage tank, and the fuel storage tank supplies fuel to the gas generating device through a fuel supply pipe.

[0018] Preferably, the fuel regulating system includes a fuel regulating shut-off valve arranged at the outlet of the fuel storage tank, a throttle arranged at the front end of the gas generating device, a flow meter and a fuel regulating quick-opening valve arranged between the fuel regulating shut-off valve and the throttle. The high-pressure fuel in the fuel storage tank passes through the fuel regulating shut-off valve, the flow meter and the throttle to provide the required fuel for gas generation.

[0019] Preferably, the pressure regulating and conveying unit includes a combustion-supporting supply shut-off valve, a pneumatic pressure regulating valve, a pressure sensor and a combustion-supporting supply quick-opening valve which are arranged in sequence along the pipeline. The pneumatic pressure regulating valve is used to meet the ignition and gas distribution requirements of the multi-way burners. The combustion-supporting supply quick-opening valve is set at the end of each supply pipeline and works individually or in combination to meet the gas supply requirements of single-way or multi-way burners. By controlling the supply of each group of combustion-supporting gases individually or in combination, the requirements of changes in different high-temperature zones can be met.

[0020] Preferably, the process gas source is a nitrogen gas source, and a process gas supply shut-off valve is provided at the outlet of the process gas source, and the process gas supply shut-off valve is connected to the fuel supply device and the supporting gas supply device through a process gas supply pipe;

[0021] The boost gas regulating unit includes a boost gas pressure regulating valve and a pressure gauge sequentially arranged along the pipeline. The boost gas pressure regulating valve is arranged at the air inlet of the fuel storage tank of the fuel supply device, and is used to regulate and boost the pressure of the fuel storage tank according to the test requirements;

[0022] The valve control gas regulating unit includes a control gas pressure regulating valve, which is connected to the process gas supply pipe and the pneumatic pressure regulating valve to meet the control gas usage requirements of the pneumatic pressure regulating valve;

[0023] The purge gas regulating unit includes a purge gas quick-opening valve arranged along the pipeline, and the purge gas quick-opening valve is connected to the process gas supply pipe and the oxidant gas pipeline, thereby meeting the purge demand of the oxidant gas pipeline.

[0024] On the other hand, the present application provides a method for conducting a high temperature rate-of-rise temperature distortion test based on any of the process inlet temperature distortion test systems described above, wherein the test includes a pre-test preparation stage and an ignition high temperature gas injection test stage.

[0025] The pre-test preparation stage includes the following steps:

[0026] S101, before testing, check whether the checklist of each equipment or device is complete;

[0027] S102: Before the test, complete site clearance, set up a security area, and check whether all positions are ready;

[0028] S103: Based on the engine test mission requirements and test outline, determine the engine test state and test objectives, estimate the fuel flow rate and the gas supply pressure of the predetermined ratio of the oxidant gas, and pre-calibrate the opening parameters of each regulating valve for the required pressure and flow rate;

[0029] S104, determining the burner and flame guide assembly 22 required to operate and their combination according to the distortion intensity and the phase angle in the high temperature zone;

[0030] S105, completing the setting of relevant test parameters through the control device and completing the logical control of starting and stopping each device;

[0031] S106, install the process gas source, close the process gas supply stop valve, boost gas pressure regulating valve, purge gas quick opening valve, and control gas pressure regulating valve;

[0032] S107, closing the fuel supply stop valve and the fuel regulating stop valve, and filling the fuel storage tank with the fuel required for operation;

[0033] S108, open the process gas supply shut-off valve and the fuel supply front shut-off valve to fill the process gas supply pipe with nitrogen, adjust the boost gas regulating valve, and adjust the pressure to the required pressure by observing the pressure gauge;

[0034] S109, select a throttle as needed, open the fuel supply shut-off valve, open the fuel regulating quick-opening valve for a predetermined time, allow the fuel to pass through the flow meter, allow the fuel to enter the burner through the fuel supply pipe and the flexible pipe, and close the fuel regulating quick-opening valve;

[0035] S110, adjusting the opening of the pneumatic pressure regulating valve through the air pressure regulating valve so that it can provide valve control requirements that meet the requirements;

[0036] S111: Install the combustion-supporting gas source, close the combustion-supporting gas supply stop valve, open the combustion-supporting gas supply quick-opening valve, adjust the pneumatic pressure regulating valve to a predetermined opening, open the combustion-supporting gas supply stop valve, allow the combustion-supporting gas to enter the burner through the combustion-supporting gas supply pipe and the flexible pipe, close the combustion-supporting gas supply quick-opening valve, collect the pressure signal through the pressure sensor and upload it to the control device, and complete the preparation for the combustion-supporting gas supply work;

[0037] 2. The ignition high-temperature gas injection test phase includes the following steps:

[0038] S201, operating the engine to a desired state point according to the engine test procedure;

[0039] S202, before the test, turn on the warning lights and alarm bells;

[0040] S203, the control device starts to dynamically collect data;

[0041] S204, supplying combustion gas and fuel in a time sequence and issuing an ignition signal;

[0042] T0 timing: open the quick-opening valve for the combustion-supporting supply, and the remote pressure sensor collects the pressure signal and transmits it to the control device;

[0043] T0+X timing: The fuel regulating quick-opening valve is opened, and the ignition signal is triggered at the same time. The flow meter collects the pressure signal at the remote end and transmits it to the control device. The fuel and supporting gas burn in the burner, and the high-temperature gas is sprayed into the intake duct through the flame pilot assembly to mix with the cold air.

[0044] T0+Y timing: turn off the ignition signal;

[0045] T0+Z timing: close the fuel regulating quick opening valve;

[0046] T0+W timing: close the combustion-supporting quick-opening valve, and the current ignition timing ends;

[0047] S205, the control device receives an engine surge signal and immediately closes the fuel regulating quick-opening valve and the combustion-supporting supply quick-opening valve when the engine surges during the test;

[0048] S206, repeating the ignition sequence according to the actual test conditions of the engine;

[0049] S207: The engine test state enters the next procedure to reset and adjust the relevant components of each device, fuel supply, auxiliary gas supply, and ignition timing;

[0050] S208, restarting the ignition sequence according to the mode of step S204 and carrying out the test;

[0051] S209, the ignition sequence ends, the fuel regulating quick-opening valve and the combustion-supporting supply quick-opening valve are closed, and the dynamic data collection is stopped;

[0052] S210, close the boost gas pressure regulating valve, the fuel supply front shut-off valve, and the fuel supply rear shut-off valve, open the fuel regulating shut-off valve and the fuel regulating quick-opening valve, collect the remaining fuel at the low point, and close the fuel regulating quick-opening valve and the fuel regulating shut-off valve;

[0053] S211, close the combustion-supporting supply stop valve, open the combustion-supporting supply quick-opening valve and the purge-gas quick-opening valve, purge the combustion-supporting gas pipeline, and then close the purge-gas quick-opening valve, the pneumatic pressure regulating valve, the combustion-supporting supply quick-opening valve, and the control gas pressure regulating valve;

[0054] S212, after the purge is completed, close the process gas supply stop valve;

[0055] S213, the test ends, turn off the warning lights and alarm bells;

[0056] S214: Analyze the dynamically collected data to determine whether it meets the engine test requirements.

[0057] The test system of the present application adopts a method of introducing high-temperature gas after the fuel is completely burned externally, which has good safety and stability. The high-temperature gas supply of each group can be controlled individually to meet the needs of complex temperature rise rate changes. In addition, the temperature rise rate has a wide range, and can achieve quantitative simulation of distortion parameters such as a certain temperature distortion intensity of the engine inlet section, a certain temperature rise rate, a certain high-temperature zone range, a certain high-temperature zone phase angle, and a certain high-temperature duration. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the technical solutions provided by this application, the following is a brief introduction to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of this application.

[0059] Figure 1 Schematic diagram of the process inlet duct temperature distortion test system of this application.

[0060] Reference numerals:

[0061] 10-Intake

[0062] 20-Gas generator

[0063] 21-Burner

[0064] 22-Flame pilot assembly

[0065] 30-Fuel supply device

[0066] 31-Fuel storage tank

[0067] 32-Fuel supply front stop valve

[0068] 33-Fuel supply rear stop valve

[0069] 34-Fuel supply pipe

[0070] 35-Fuel regulating shut-off valve

[0071] 36-Throttle

[0072] 37-Flow meter

[0073] 38-Fuel regulating quick opening valve

[0074] 40-Combustion gas supply device

[0075] 41-Combustion-supporting gas source

[0076] 42-Combustion supply stop valve

[0077] 43-Pneumatic pressure regulating valve

[0078] 44-Pressure sensor

[0079] 45-Combustion supply quick opening valve

[0080] 50-Process gas supply device

[0081] 51-Process gas source

[0082] 52-Process gas supply stop valve

[0083] 53-Process gas supply pipe

[0084] 54-Booster air pressure regulating valve

[0085] 55-Pressure gauge

[0086] 56-Blow-off quick-opening valve

[0087] 57-Control air pressure regulating valve

[0088] 60-Control device DETAILED DESCRIPTION

[0089] In order to make the purpose, technical solutions and advantages of the implementation of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below in conjunction with the drawings in the embodiments of this application.

[0090] In response to the problems encountered in the background technology, the present application provides a process intake duct temperature distortion test system and test method, which controls the temperature rise rate at the inlet of the engine power source by adjusting the fuel supply rate, thereby simulating the process of temperature distortion of the power source when the engine inhales high-temperature exhaust gas.

[0091] like Figure 1 The process inlet duct temperature distortion test system provided in this application includes: an inlet duct 10, a gas generating device 20, a fuel supply device 30, a combustion gas supply device 40, a process gas supply device 50, a control device 60 and a measuring device 70.

[0092] The gas generating device 20 includes a burner 21 and a flame guide assembly 22 . The gas generating device 20 is arranged upstream of the engine inlet. The burner 21 is arranged outside the engine intake duct 10 . The flame guide assembly 22 is connected to the burner 21 and extends deep into the interior of the intake duct 10 .

[0093] In some embodiments of the present application, the flame guide assembly 22 primarily consists of a central air pipe, V-shaped side wings, and a mounting flange. The flame guide assembly 22 is connected to the outlet of the burner 21 and fixed to the intake duct adapter housing. The flame guide assembly 22 is used in conjunction with the burner 21, with each burner 21 equipped with a set of flame guide assemblies 22. The intake duct adapter housing arranges the mounting interfaces of the flame guide assemblies 22 evenly along the circumference as required to achieve full-circle temperature distortion. The flame guide assembly 22 is provided with injection holes. The number of rows of injection holes, the number of holes per row, and the length of the central air pipe are set to ensure uniformity of the temperature field after mixing.

[0094] In the present application, different numbers of flame pilot assemblies 22 can be arranged on the intake duct 10 according to the requirements of engine temperature rise. For example, when a higher temperature rise rate is required, more flame pilot assemblies 22 can be arranged, and vice versa, fewer flame pilot assemblies 22 can be arranged. In some embodiments of the present application, the number of burners 21 and flame pilot assemblies 22 can be set to 6, 8, 12, or other required combinations according to test requirements. In the illustrated embodiment of the present application, the number of burners 21 and flame pilot assemblies 22 is set to 8.

[0095] The fuel supply device 30 is divided into a fuel supply system and a fuel regulating system. The fuel supply system is used to supply high-pressure fuel of a certain pressure and flow required for the test to the gas generator 20, and the fuel regulating system is used to regulate and control the flow or pressure of the supplied high-pressure fuel.

[0096] In this application, the fuel supply system uses a relatively stable chemically high-pressure process gas extrusion supply method to supply fuel. It mainly includes a fuel storage tank 31 (such as aviation fuel, ethanol, etc.), a fuel supply front stop valve 32 and a fuel supply rear stop valve 33 located at the inlet and outlet of the fuel storage tank 31. The fuel storage tank 31 supplies fuel to the gas generator 10 through a fuel supply pipe 34. The fuel supply pipe 34 can be arranged in a step-by-step incremental branch manner according to actual conditions.

[0097] The fuel regulating system primarily includes a fuel regulating shutoff valve 35 at the outlet of the fuel storage tank 31, a throttle 36 at the front end of the gas generator 10, a flowmeter 37 between the fuel regulating shutoff valve 35 and the throttle 36, and a fuel regulating quick-opening valve 38. The high-pressure fuel in the fuel storage tank 31 flows through the fuel regulating shutoff valve 35, the flowmeter 37, and the throttle 36 before supplying fuel to the gas generator 10 (i.e., the burner 21). The throttle 36 and the gas generator 10 can be connected using a flexible pipe. The fuel supply is measured by the flowmeter 37. Due to the long fuel supply pipeline, the throttle 36 is positioned closer to the burner 21 in this application.

[0098] The combustion-supporting gas supply device 40 includes a combustion-supporting gas source 41 (such as oxygen) and a pressure-regulating and conveying unit, which is used to provide the combustion-supporting gas required for the combustion of the burner 21. The pressure-regulating and conveying unit is the main component of the combustion-supporting gas supply device 40, which is used to ensure the stable pressure delivery of the combustion-supporting gas flow. The pressure-regulating and conveying unit is sequentially provided with a combustion-supporting gas supply stop valve 42, a pneumatic pressure-regulating valve 43, a pressure sensor 44 and a combustion-supporting gas supply quick-opening valve 45 along the pipeline. In the present application, in order to ensure the ignition requirements of the multi-channel burners 21 in the test system, the pneumatic pressure-regulating valve 43 adopts a pneumatic adjustment mode to meet the gas distribution requirements of the multi-channel burners 21. A combustion-supporting gas supply quick-opening valve 45 is provided at the end of each supply pipeline of the pressure-regulating and conveying unit. The combustion-supporting gas supply quick-opening valve 45 of each branch can work individually or in combination to meet the gas supply requirements of single-channel or multi-channel burners 21. The combustion-supporting gas pipeline can also be arranged in a step-by-step incremental branch manner according to actual conditions. Furthermore, depending on the engine's process requirements, the combustion-supporting gas supply to each group can be controlled individually, or several groups can be controlled simultaneously to meet the varying requirements of different high-temperature zones. During testing, high-pressure combustion-supporting gas is supplied from combustion-supporting gas source 41, regulated by pneumatic pressure regulating valve 43 to the required operating pressure of burner 21, and then delivered to burner 21 through combustion-supporting gas supply quick-opening valve 45.

[0099] The process gas supply device 50 includes a process gas source 51, a boost gas regulating unit, a valve-controlled gas regulating unit, and a purge gas regulating unit. In a preferred embodiment of the present application, the process gas source 51 uses relatively chemically stable nitrogen as the process gas, which is sampled from a nitrogen cylinder bank. A process gas supply shutoff valve 52 is installed at the outlet of the process gas source 51, which is connected to the fuel supply device 30 and the oxidant gas supply device 40 via a process gas supply pipe 53. By adjusting the process gas supply pressure and the throttle 36, the fuel flow rate and rate can be varied, thereby adjusting the temperature rise and temperature rise rate at the engine inlet.

[0100] The boost gas regulating unit is primarily used to provide pressurized process gas to the fuel tank 31. A boost gas pressure regulating valve 54 and a pressure gauge 55 are sequentially installed along the pipeline to meet the requirements of the fuel supply device 30 for supplying the required boosted process gas. The boost gas pressure regulating valve 54 is installed at the air inlet of the fuel tank 31 to regulate and boost the pressure of the fuel tank 31 according to test requirements.

[0101] The valve control gas regulating unit is mainly used to provide the process gas for the pneumatic pressure regulating valve 43 required for system operation. It includes a control gas pressure regulating valve 57. The control gas pressure regulating valve 57 is connected to the process gas supply pipe 53 and the pneumatic pressure regulating valve 43, thereby meeting the use requirements of the control gas of the pneumatic pressure regulating valve 43.

[0102] The purge regulating unit is mainly used to provide purge of the combustion-supporting gas pipeline during and after the system is in operation to ensure the safety of the system during the combustion-supporting gas transportation process. A purge quick-opening valve 56 is provided along the pipeline. The purge quick-opening valve 56 connects the process gas supply pipe 53 and the combustion-supporting gas pipeline to meet the purge requirements of the combustion-supporting gas pipeline.

[0103] Given that the supporting gas component contains highly hazardous media, explosion failures are prone to occur during system operation, which is quite dangerous. In order to effectively enhance the safety of system operation, the fuel supply device 30, the supporting gas supply device 40, and the process gas supply device 50 adopt a full remote control working mode.

[0104] The control device 60 is connected to the flow meter 37 and the fuel regulating quick-opening valve 38 in the fuel supply device 30, the pneumatic pressure regulating valve 43 and the combustion supply quick-opening valve 45 in the combustion-supporting gas supply device 40, the purge gas quick-opening valve 56 in the process gas supply device 50, the burner 21 and the measuring device 70 in the gas generating device 20, etc., to realize valve and ignition control and pressure, flow, temperature rise and other measurements.

[0105] The measuring device 70 uses a high-inertia thermocouple measuring rake, which is inserted into the air intake duct to measure short-term changes in engine temperature rise. The number and position of the measuring rakes can correspond to the number and installation position of the flame guide assemblies 22.

[0106] When the test system of the present application is tested, fuel and combustion-supporting gas are supplied to the corresponding burner 21, and ignited and completely burned to produce high-temperature combustion gas. The high-temperature combustion gas is introduced into the intake duct 10 through the flame guide assembly 22, and the high-temperature combustion gas injected into the intake duct 10 is evenly mixed with the high-speed cold air in the intake duct 10. The other burners 21 may not work, and the corresponding area is still the cold air from the inlet of the intake duct 10. The cold and hot air flow into the engine at the same time, forming a distorted temperature field at the engine inlet, thereby realizing the simulation of the temperature distortion test parameters of the engine power source inlet cross section. The temperature rise rate is adjusted by controlling the fuel supply rate, etc., and high temperature rise rate temperature distortion tests with different requirements can be realized.

[0107] The test system of the present application adopts a method of introducing high-temperature gas after the fuel is completely burned externally, which has good safety and stability. The high-temperature gas supply of each group can be controlled individually to meet the needs of complex temperature rise rate changes. In addition, the temperature rise rate has a wide range, and can achieve quantitative simulation of distortion parameters such as a certain temperature distortion intensity of the engine inlet section, a certain temperature rise rate, a certain high-temperature zone range, a certain high-temperature zone phase angle, and a certain high-temperature duration.

[0108] The process of conducting a test using the high temperature rate-of-rise temperature distortion system of the present application can be divided into two stages: a pre-test preparation stage and an ignition high temperature gas injection test.

[0109] 1. The pre-test preparation stage includes the following steps:

[0110] S101, before testing, check whether the checklists of each equipment or device are signed completely;

[0111] S102: Before the test, complete site clearance, set up a security area, and check whether all positions are ready;

[0112] S103: Based on the engine test mission requirements and test outline, determine the engine test state and test objectives (such as distortion intensity, high temperature range, high temperature phase angle, and temperature rise rate), estimate fuel flow rate and the gas supply pressure of a certain ratio of oxidant gas, and pre-calibrate the required pressure, flow control valve opening, and other parameters;

[0113] S104, determining the burner 21 and flame guide assembly 22 required to operate and their combination according to the distortion intensity, high temperature phase angle, etc.;

[0114] S105, through the upper computer human-machine interface of the control device 60, complete the setting of relevant test parameters and complete the logical control of starting and stopping each device;

[0115] S106, install the process gas source 51, close the process gas supply stop valve 52, the boost gas pressure regulating valve 54, the purge gas quick opening valve 54, and the control gas pressure regulating valve 57;

[0116] S107, closing the fuel supply stop valve 33 and the fuel regulating stop valve 35, and filling the fuel storage tank 31 with the fuel required for operation;

[0117] S108, open the process gas supply shut-off valve 52 and the fuel supply front shut-off valve 32 to fill the process gas supply pipe 53 with nitrogen, adjust the boost gas regulating valve 54, and adjust the pressure to the required level by observing the pressure gauge 55;

[0118] S109, select the throttle 36 as needed, open the fuel supply rear stop valve 33, open the fuel regulating quick-opening valve 38 for a certain period of time, allow the fuel to pass through the flow meter 37, allow the fuel to enter the burner 21 through the fuel supply pipe 34 and the flexible pipe, and close the fuel regulating quick-opening valve 38;

[0119] S110, regulating the opening of the pneumatic pressure regulating valve 43 through the air pressure regulating valve 57 so that it can provide valve control requirements that meet the requirements;

[0120] S111, install the combustion-supporting gas source 41, close the combustion-supporting gas supply stop valve 42, open the combustion-supporting gas supply quick-opening valve 45, adjust the pneumatic pressure regulating valve 43 to a certain opening, open the combustion-supporting gas supply stop valve 42, allow the combustion-supporting gas to enter the burner 21 through the combustion-supporting gas supply pipe and the flexible pipe, close the combustion-supporting gas supply quick-opening valve 45, collect the pressure signal through the pressure sensor 44 and upload it to the host computer, completing the preparation for the combustion-supporting gas supply work.

[0121] 2. The ignition high-temperature gas injection test phase includes the following steps:

[0122] S201, operating the engine to a desired state point according to the engine test procedure;

[0123] S202, before the test, turn on the warning lights and alarm bells;

[0124] S203, the control device 60 starts to dynamically collect data;

[0125] S204, supplying combustion gas and fuel in a time sequence and issuing an ignition signal;

[0126]

[0127]

[0128] S205, the control device 60 receives an engine surge signal. When the engine surges during the test, the control device 60 immediately triggers the linkage, that is, immediately closes the fuel regulating quick-opening valve 38 and the combustion-supporting supply quick-opening valve 45;

[0129] S206, repeating the ignition sequence according to the actual test conditions of the engine;

[0130] In step S207, the engine test state enters the next procedure. For example, if the high temperature range, high temperature phase angle, temperature rise rate, or pressure distortion index parameter requirements change, the engine needs to be stopped and the relevant components of each device, fuel supply, auxiliary gas supply, ignition timing, etc. need to be reset and adjusted.

[0131] S208, restart the ignition sequence according to the mode of step S204 and carry out the test;

[0132] S209, the ignition sequence ends, the fuel regulating quick-opening valve 38 and the combustion-supporting supply quick-opening valve 45 are closed, and the dynamic data collection is stopped;

[0133] S210, close the boost gas pressure regulating valve 54, the fuel supply front shut-off valve 32, and the fuel supply rear shut-off valve 33, open the fuel regulating shut-off valve 35 and the fuel regulating quick-opening valve 38, collect the remaining fuel at the low point, and close the fuel regulating quick-opening valve 38 and the fuel regulating shut-off valve 35;

[0134] S211, close the combustion-supporting supply stop valve 42, open the combustion-supporting supply quick-opening valve 45 and the purge gas quick-opening valve 56, and purge the combustion-supporting gas pipeline. After the purge gas quick-opening valve 56, the pneumatic pressure regulating valve 43, the combustion-supporting supply quick-opening valve 45, and the control gas pressure regulating valve 57 are closed;

[0135] S212, after the purge is completed, close the process gas supply stop valve 52;

[0136] S213, the test ends, turn off the warning lights and alarm bells;

[0137] S214: Analyze the dynamically collected data to determine whether it meets the engine test requirements.

[0138] The test system in this application is safe, reliable, and flexible. The combustion organization technology is easy to implement, has minimal impact on the engine's intake airflow, and exhibits excellent synchronization. The test method's requirements for auxiliary devices, including fuel and combustion-supporting gas, selection, and explosion-proof ratings, placement, safety measures, and usage are less stringent than those for combustion methods like hydrogen.

[0139] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A process inlet temperature distortion test system, characterized in that: include: air intake; A gas generator is used to generate high-temperature gas and introduce it into the intake duct, where it is mixed with the cold air in the intake duct to create temperature distortion in the intake duct; A fuel supply device, the fuel supply device comprising a fuel supply system and a fuel regulating system. The fuel supply system is used to supply high-pressure fuel at a predetermined pressure and flow rate required for the test to the gas generator, and the fuel regulating system is used to regulate and control the flow rate or pressure of the supplied high-pressure fuel. A combustion-supporting gas supply device, the combustion-supporting gas supply device includes a combustion-supporting gas source and a pressure-regulating and conveying unit, which is used to provide a predetermined ratio of combustion-supporting gas required for the working conditions of the gas generating device to generate high-temperature gas. The pressure-regulating and conveying unit includes a combustion-supporting gas supply stop valve, a pneumatic pressure-regulating valve, a pressure sensor and a combustion-supporting gas supply quick-opening valve arranged in sequence along the pipeline. The pneumatic pressure-regulating valve is used to meet the ignition gas distribution requirements of the multi-way burner. The combustion-supporting gas supply quick-opening valve is provided at the end of each supply pipeline and works individually or in combination to meet the gas supply requirements of the single-way or multi-way burners. By controlling the supply of each group of combustion-supporting gas individually or in combination, the requirements of changes in the range of different high-temperature zones can be met; A process gas supply device, comprising a process gas source, a pressurized gas regulating unit, a valve-controlled gas regulating unit, and a purge gas regulating unit. The process gas source is connected to a fuel supply device and a oxidizing gas supply device through the pressurized gas regulating unit, the valve-controlled gas regulating unit, and the purge gas regulating unit, respectively, to meet the needs of the fuel supply device for supplying pressurized process gas, the needs of the pressure regulating and conveying unit, and the purge needs of the oxidizing gas pipeline; A control device connected to the gas generator, the fuel supply device, the supporting gas supply device and the supporting gas supply device, for realizing valve and ignition control and measuring pressure, flow and temperature rise; The measuring device extends into the intake duct and is used to measure the short-term change of the engine temperature rise.

2. The process inlet temperature distortion test system according to claim 1, characterized in that: The gas generating device comprises a burner and a flame guide assembly. The burner is arranged outside the air inlet duct, and the flame guide assembly is connected to the outlet of the burner and extends deep into the interior of the air inlet duct.

3. The process inlet temperature distortion test system according to claim 2, characterized in that: The flame guide assemblies are matched with the burners one by one, and the flame guide assemblies are evenly arranged on the circumference of the air inlet duct.

4. The process inlet temperature distortion test system according to claim 3, characterized in that: The number of flame guide assemblies arranged on the air intake duct is determined according to the temperature rise change requirements of the engine, and the flame guide assembly is provided with injection holes. The number of rows of injection holes, the number of each row and the length of the flame guide assembly are set to ensure the uniformity of the temperature field after mixing.

5. The process inlet temperature distortion test system according to claim 1, characterized in that: The fuel supply system includes a fuel storage tank, a fuel supply front stop valve and a fuel supply rear stop valve arranged at the inlet and outlet positions of the fuel storage tank. The fuel storage tank supplies fuel to the gas generating device through a fuel supply pipe.

6. The process inlet temperature distortion test system according to claim 5, characterized in that: The fuel regulating system includes a fuel regulating shut-off valve arranged at the outlet of the fuel storage tank, a throttle arranged at the front end of the gas generating device, a flow meter and a fuel regulating quick-opening valve arranged between the fuel regulating shut-off valve and the throttle. The high-pressure fuel in the fuel storage tank passes through the fuel regulating shut-off valve, the flow meter and the throttle to provide the required fuel for the gas generating device.

7. The process inlet temperature distortion test system according to claim 6, characterized in that: The process gas source is a nitrogen gas source, and a process gas supply shut-off valve is provided at the outlet of the process gas source. The process gas supply shut-off valve is connected to the fuel supply device and the supporting gas supply device through a process gas supply pipe; The boost gas regulating unit includes a boost gas pressure regulating valve and a pressure gauge sequentially arranged along the pipeline. The boost gas pressure regulating valve is arranged at the air inlet of the fuel storage tank of the fuel supply device, and is used to regulate and boost the pressure of the fuel storage tank according to the test requirements; The valve control gas regulating unit includes a control gas pressure regulating valve, which is connected to the process gas supply pipe and the pneumatic pressure regulating valve to meet the control gas usage requirements of the pneumatic pressure regulating valve; The purge gas regulating unit includes a purge gas quick-opening valve arranged along the pipeline, and the purge gas quick-opening valve is connected to the process gas supply pipe and the oxidant gas pipeline, thereby meeting the purge demand of the oxidant gas pipeline.

8. A method for conducting a high temperature rate rise temperature distortion test based on the process inlet temperature distortion test system according to any one of claims 1 to 7, characterized in that: The test includes a pre-test preparation stage and an ignition high-temperature gas injection test stage; The pre-test preparation stage includes the following steps: S101, before testing, check whether the checklist of each equipment or device is complete; S102: Before the test, complete site clearance, set up a security area, and check whether all positions are ready; S103: Based on the engine test mission requirements and test outline, determine the engine test state and test objectives, estimate the fuel flow rate and the gas supply pressure of the predetermined ratio of the oxidant gas, and pre-calibrate the opening parameters of each regulating valve for the required pressure and flow rate; S104, determining the burner and flame guide assembly required for operation and their combination according to the distortion intensity and the phase angle in the high temperature zone; S105, completing the setting of relevant test parameters through the control device and completing the logical control of starting and stopping each device; S106, install the process gas source, close the process gas supply stop valve, boost gas pressure regulating valve, purge gas quick opening valve, and control gas pressure regulating valve; S107, closing the fuel supply stop valve and the fuel regulating stop valve, and filling the fuel storage tank with the fuel required for operation; S108, open the process gas supply shut-off valve and the fuel supply front shut-off valve to fill the process gas supply pipe with nitrogen, adjust the boost gas regulating valve, and adjust the pressure to the required pressure by observing the pressure gauge; S109, select a throttle as needed, open the fuel supply shut-off valve, open the fuel regulating quick-opening valve for a predetermined time, allow the fuel to pass through the flow meter, allow the fuel to enter the burner through the fuel supply pipe and the flexible pipe, and close the fuel regulating quick-opening valve; S110, adjusting the opening of the pneumatic pressure regulating valve through the air pressure regulating valve so that it can provide valve control requirements that meet the requirements; S111: Install the combustion-supporting gas source, close the combustion-supporting gas supply stop valve, open the combustion-supporting gas supply quick-opening valve, adjust the pneumatic pressure regulating valve to a predetermined opening, open the combustion-supporting gas supply stop valve, allow the combustion-supporting gas to enter the burner through the combustion-supporting gas supply pipe and the flexible pipe, close the combustion-supporting gas supply quick-opening valve, collect the pressure signal through the pressure sensor and upload it to the control device, and complete the preparation for the combustion-supporting gas supply work; 2. The ignition high-temperature gas injection test phase includes the following steps: S201, operating the engine to a desired state point according to the engine test procedure; S202, before the test, turn on the warning lights and alarm bells; S203, the control device starts to dynamically collect data; S204, supplying combustion gas and fuel in a time sequence and issuing an ignition signal; T0 timing: open the quick-opening valve for the combustion-supporting supply, and the remote pressure sensor collects the pressure signal and transmits it to the control device; T0+X timing: The fuel regulating quick-opening valve is opened, and the ignition signal is triggered at the same time. The flow meter collects the pressure signal at the remote end and transmits it to the control device. The fuel and supporting gas burn in the burner, and the high-temperature gas is sprayed into the intake duct through the flame pilot assembly to mix with the cold air. T0+Y timing: turn off the ignition signal; T0+Z timing: close the fuel regulating quick opening valve; T0+W timing: close the combustion supply quick opening valve, and the current ignition timing ends; S205, the control device receives an engine surge signal and immediately closes the fuel regulating quick-opening valve and the combustion-supporting supply quick-opening valve when the engine surges during the test; S206, repeating the ignition sequence according to the actual test conditions of the engine; S207: The engine test state enters the next procedure to reset and adjust the relevant components of each device, fuel supply, auxiliary gas supply, and ignition timing; S208, restart the ignition sequence according to the mode of step S204 and carry out the test; S209, the ignition sequence ends, the fuel regulating quick-opening valve and the combustion-supporting supply quick-opening valve are closed, and the dynamic data collection is stopped; S210, close the boost gas pressure regulating valve, the fuel supply front shut-off valve, and the fuel supply rear shut-off valve, open the fuel regulating shut-off valve and the fuel regulating quick-opening valve, collect the remaining fuel at the low point, and close the fuel regulating quick-opening valve and the fuel regulating shut-off valve; S211, close the combustion-supporting supply stop valve, open the combustion-supporting supply quick-opening valve and the purge-gas quick-opening valve, purge the combustion-supporting gas pipeline, and then close the purge-gas quick-opening valve, the pneumatic pressure regulating valve, the combustion-supporting supply quick-opening valve, and the control gas pressure regulating valve; S212, after the purge is completed, close the process gas supply stop valve; S213, the test ends, turn off the warning lights and alarm bells; S214: Analyze the dynamically collected data to determine whether it meets the engine test requirements.

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