Process air inlet channel temperature distortion test system and test method

Abstract

The invention provides a process gas inlet channel temperature distortion test system and test method, and belongs to the technical field of aero-engine tests, the system comprises a gas inlet channel, a gas generation device, a fuel supply device, a combustion-supporting gas supply device, a process gas supply device and a control device. After rich fuel is mixed with combustion-supporting gas in a certain proportion in the combustor for combustion, high-temperature fuel gas is guided into the gas inlet channel through the flame guide assembly and evenly mixed with high-speed cold air in the gas inlet channel, other combustors do not work, cold air from an inlet of the gas inlet channel still exists in a corresponding area, the cold air and the hot air flow into an engine at the same time, and the combustion efficiency of the engine is improved. A distortion temperature field is formed at an engine inlet, so that simulation of temperature distortion test parameters of the section of the engine power source inlet is achieved, adjustment of the temperature rise rate is achieved by controlling the fuel supply rate and the like, and high-temperature-rise-rate temperature distortion tests with different requirements can be achieved.

Description

Technical Field

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

[0002] When an aircraft takes off, the engine power source may inhale high-temperature exhaust gas or high-temperature steam, and inhale the tail flame produced by the launch of weapons during combat. At this time, temperature distortion will occur at the inlet of the engine power source, and this temperature distortion will reduce the stability margin of the engine. When the temperature distortion exceeds the stability margin of the engine power source, surge will occur, seriously affecting flight safety. In order to verify the impact of high-temperature exhaust gas or high-temperature steam on engine temperature distortion, it is usually necessary to conduct a temperature distortion test on the engine.

[0003] The existing engine temperature distortion test system can simulate and reproduce the combined distortion, stability margin loss and even surge caused by the engine power source inhaling high-temperature combustion gas, but it can usually only simulate the high-temperature zone within a qualitative range. It cannot quantitatively control indicators such as the high-temperature zone range and high-temperature rise rate, and the temperature rise rate is relatively low, generally not higher than 100K / s.

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

[0005] The purpose of the present 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, and form temperature distortion in the intake duct by mixing it with the cold air in the intake duct;

[0009] A fuel supply device, the fuel supply device is divided into a fuel supply system and a fuel regulating system, the fuel supply system is used to supply the gas generating device with high-pressure fuel of a predetermined pressure and flow required for the test, and the fuel regulating system is used to regulate and control the flow or pressure of the supplied high-pressure fuel;

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

[0011] A process gas supply device, the 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 being connected to a fuel supply device and a combustion-supporting gas supply device respectively through the pressurized gas regulating unit, the valve-controlled gas regulating unit and the purge gas regulating unit, so as to meet the use requirements of the pressurized process gas supplied by the fuel supply device, the use requirements of the pressure regulating and conveying unit and the purge requirements of the combustion-supporting gas pipeline;

[0012] A control device, the control device is connected to the gas generating device, the fuel supply device, the combustion-supporting gas supply device and the combustion-supporting gas supply device, and is used to realize valve and ignition control and pressure, flow rate and temperature rise measurement;

[0013] A measuring device is inserted into the air intake duct and is used to measure short-term changes in 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 injection holes are opened on the flame guide assembly. 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 arranged at the inlet and outlet positions 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 stop 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 stop valve and the throttle. The high-pressure fuel in the fuel storage tank passes through the fuel regulating stop 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 stop 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 gas distribution requirements of the multi-way burners. The combustion-supporting supply quick-opening valve is arranged 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 combustion-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, wherein 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 use requirements of the pneumatic pressure regulating valve for control gas;

[0023] The purge gas regulating unit comprises 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 combustion-supporting gas pipeline, so as to meet the purge demand of the combustion-supporting gas pipeline.

[0024] On the other hand, the present application provides a method for performing a high temperature rise rate 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 the site clearance, set up the warning area, and check whether the preparation of each post is in place;

[0028] S103, according to the engine test task requirements and test outline content, determine the engine test state and test objectives, estimate the fuel flow rate and the gas supply pressure of the combustion gas of the predetermined ratio, and calibrate the opening parameters of each regulating valve of the required pressure and flow in advance;

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

[0030] S105, completing the setting of relevant test parameters through the control device and completing the logic 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 the work;

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

[0034] S109, select a throttle according to demand, open the shut-off valve after the fuel supply, open the fuel regulating quick-opening valve for a predetermined time, let the fuel pass through the flow meter, let the fuel 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 by 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 program;

[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-supporting gas and fuel in a time sequence and issuing an ignition signal;

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

[0043] T0+X timing: open the fuel regulating quick-opening valve and trigger the ignition signal at the same time. The flow meter collects the pressure signal at the remote end and sends it to the control device. The fuel and the combustion-supporting gas burn in the burner. The high-temperature gas is sprayed into the air inlet through the flame guide 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 supply quick-opening valve, and the current ignition timing ends;

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

[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, and the relevant components of each device, the fuel supply amount, the combustion gas supply amount, and the ignition sequence time are reset and adjusted;

[0050] S208, restart the ignition sequence according to the mode of step S204 and carry 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 stop valve, and the fuel supply rear stop valve, open the fuel regulating stop 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 stop valve;

[0053] S211, close the combustion-supporting supply stop valve, open the combustion-supporting supply quick-opening valve and the gas-purging quick-opening valve, purge the combustion-supporting gas pipeline, and after completion, close the gas-purging 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 is over, turn off the warning lights and alarm bells;

[0056] S214: Perform data analysis based on the dynamically collected data to determine whether the engine test requirements are met.

[0057] The test system of the present application adopts a method of introducing high-temperature combustion gas after the fuel is completely burned externally, which has good safety and stability, and can control the supply of high-temperature combustion gas of each group individually to meet the needs of complex temperature rise rate changes. 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 solution provided by the present application, the following is a brief introduction to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present application.

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

[0060] Reference numerals:

[0061] 10-Intake

[0062] 20-Gas generating device

[0063] 21-Burners

[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 stop valve

[0071] 36-Throttle

[0072] 37-Flow meter

[0073] 38-Fuel regulating quick opening valve

[0074] 40-Combustion gas supply device

[0075] 41-Combustion 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-Boosting gas pressure regulating valve

[0085] 55-Pressure gauge

[0086] 56-Blow off gas quick opening valve

[0087] 57-Control gas 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 inlet 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 air inlet temperature distortion test system provided in the present application includes: an air inlet 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 intake duct 10 .

[0093] In some embodiments of the present application, the flame guide assembly 22 is mainly composed of a middle air pipe, a V-shaped flank, a mounting flange, etc. The flame guide assembly 22 is connected to the outlet of the burner 21 and fixed on the air intake duct adapter casing. The flame guide assembly 22 is used in conjunction with the burner 21, and each burner 21 is matched with a group of flame guide assemblies 22. The air intake duct adapter casing arranges the mounting interfaces of the flame guide assembly 22 evenly along the circumference as required to achieve full-ring temperature distortion. The flame guide assembly 22 is provided with injection holes, and the number of rows of injection holes, the number of each row, and the length of the middle air pipe are set according to the uniformity of the temperature field after mixing.

[0094] In the present application, according to the requirements of the temperature rise change of the engine, different groups of flame guide assemblies 22 can be arranged on the intake duct 10. For example, when a higher temperature rise rate is required, more flame guide assemblies 22 can be arranged, and vice versa, fewer flame guide assemblies 22 can be arranged. In some embodiments of the present application, the burner 21 and the flame guide assembly 22 can be set to 6, 8, 12 or other combinations of requirements according to the test requirements. The burner 21 and the flame guide assembly 22 in the illustrated embodiment of the present application are 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 generating device 20, and the fuel regulating system is used to regulate and control the flow or pressure of the supplied high-pressure fuel.

[0096] In the present application, the fuel supply system adopts the method of extruding and supplying high-pressure process gas with relatively stable chemical properties to supply fuel, which 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 arranged at the inlet and outlet positions of the fuel storage tank 31, and the fuel storage tank 31 supplies fuel to the gas generating device 10 through a fuel supply pipe 34. Among them, the fuel supply pipe 34 can be arranged in a step-by-step increasing branch manner according to actual conditions.

[0097] The fuel regulating system mainly includes a fuel regulating shut-off valve 35 arranged at the outlet of the fuel storage tank 31, a throttle 36 arranged at the front end of the gas generator 10, a flow meter 37 and a fuel regulating quick-opening valve 38 arranged between the fuel regulating shut-off valve 35 and the throttle 36. The high-pressure fuel in the fuel storage tank 31 supplies fuel to the gas generator 10 (i.e., the burner 21) after passing through the fuel regulating shut-off valve 35, the flow meter 37 and the throttle 36. Among them, the throttle 36 and the gas generator 10 can be installed and connected by a flexible pipe. The supply amount of fuel is measured by the flow meter 37. Since the fuel supply pipeline is long, the throttle 36 is set at a position close 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 working conditions 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 respectively provided at the end of each supply pipeline of the pressure regulating and conveying unit, and the combustion-supporting gas supply quick-opening valve 45 of each branch can work separately or in combination to meet the gas supply requirements of the single-channel or multi-channel burners 21. The combustion-supporting gas pipeline arrangement can also adopt a step-by-step increasing branch method according to actual conditions. Furthermore, according to the requirements of the engine process, the supply of each group of supporting combustion gas can be controlled separately, or several groups can be controlled to burn at the same time to meet the requirements of the range changes in different high-temperature zones. During the test, the high-pressure supporting combustion gas is adjusted by the supporting combustion gas source 41 through the pneumatic pressure regulating valve 43 to reach the pressure required for the operation of the burner 21, and then the supporting combustion gas that meets the requirements is delivered to the burner 21 through the supporting combustion 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 control gas regulating unit and a purge gas regulating unit. In a preferred embodiment of the present application, the process gas source 51 uses nitrogen with relatively stable chemical properties as the process gas, and the process gas source 51 uses a nitrogen bottle group as the gas source. A process gas supply stop valve 52 is provided at the outlet of the process gas source 51, which is connected to the fuel supply device 30 and the combustion-supporting gas supply device 40 through a process gas supply pipe 53. By adjusting the supply pressure of the process gas and the throttle 36, the fuel flow rate and rate can be changed, thereby adjusting the temperature rise and temperature rise rate of the engine inlet.

[0100] The boost gas regulating unit is mainly used to provide pressurized process gas for the fuel storage tank 31. The boost gas pressure regulating valve 54 and the pressure gauge 55 are sequentially arranged along the pipeline, so as to meet the use demand of the boosted process gas required by the fuel supply device 30. Among them, the boost gas pressure regulating valve 54 is arranged at the air inlet of the fuel storage tank 31 to regulate and pressurize the fuel storage tank 31 according to the test requirements.

[0101] The valve control gas regulating unit is mainly used to provide the process gas for the pneumatic pressure regulating valve 43 control 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, so as to meet the use requirements of the pneumatic pressure regulating valve 43 control gas.

[0102] The purge regulating unit is mainly used to provide purge for the combustion-supporting gas pipeline during system operation and after work, so as to ensure the safety of the system during the combustion-supporting gas transportation process. A purge quick-opening valve 56 is arranged along the pipeline, and the purge quick-opening valve 56 is connected to the process gas supply pipe 53 and the combustion-supporting gas pipeline, so as to meet the purge demand of the combustion-supporting gas pipeline.

[0103] In view of the high risk of combustion and explosion in the combustion-supporting gas component, the system is prone to explosion failures during operation, which is dangerous. In order to effectively enhance the safety of system operation, the fuel supply device 30, the combustion-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-small inertia thermocouple measuring rake, which extends into the intake duct to measure the short-term change of the 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. 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, and the temperature rise rate is adjusted by controlling the fuel supply rate, etc., and the high temperature rise rate temperature distortion test with different requirements can be realized.

[0107] The test system of the present application adopts a method of introducing high-temperature combustion gas after the fuel is completely burned externally, which has good safety and stability, and can control the supply of high-temperature combustion gas of each group individually to meet the needs of complex temperature rise rate changes. 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 rise rate temperature distortion system of the present application can be divided into two stages: a pre-test preparation stage and an ignition high temperature fuel gas injection test.

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

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

[0111] S102, before the test, complete the site clearance, set up the warning area, and check whether the preparation of each post is in place;

[0112] S103, according to the engine test task requirements and test outline content, determine the engine test state and test objectives (distortion intensity, high temperature range, high temperature phase angle, temperature rise rate and other parameters), estimate the fuel flow rate and a certain ratio of combustion gas supply pressure and other conditions, and calibrate the required pressure, flow control valve opening and other parameters in advance;

[0113] S104, determining the burner 21 and the flame guide assembly 22 required to work and their combination method according to the distortion intensity, the phase angle of the high temperature zone, 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, close the fuel supply stop valve 33 and the fuel regulating stop valve 35, and fill the fuel required for the operation into the fuel storage tank 31;

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

[0118] S109, select the throttle 36 as required, open the fuel supply rear stop valve 33, open the fuel regulating quick opening valve 38 for a certain period of time, let the fuel pass through the flow meter 37, let the fuel 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, adjusting 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 upper computer, and complete 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 program;

[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-supporting gas and fuel in a time sequence and issuing an ignition signal;

[0126]

[0127]

[0128] S205, the control device 60 receives the engine surge signal, and when the engine surges during the test, the linkage is immediately triggered, that is, the fuel regulating quick-opening valve 38 and the combustion-supporting supply quick-opening valve 45 are immediately closed;

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

[0130] S207, the engine test state enters the next procedure. For example, when the high temperature range, high temperature phase angle, temperature rise rate, and pressure distortion index parameter requirements change, the engine needs to be stopped, and the relevant components of each device, fuel supply, combustion-supporting gas supply, ignition sequence time, etc. are 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 stop valve 32, and the fuel supply rear stop valve 33, open the fuel regulating stop 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 stop 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, purge the combustion-supporting gas pipeline, and after completion, close 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;

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

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

[0137] S214: Perform data analysis based on the dynamically collected data to determine whether the engine test requirements are met.

[0138] The test system of this application is safe and reliable, flexible to use, easy to implement combustion organization technology, has little impact on the engine intake air flow field, and good synchronization. The auxiliary devices such as fuel and combustion-supporting gas, selection and other explosion-proof grade requirements, placement locations, safety measures, and use requirements in the test method are not as strict as those of hydrogen and other combustion methods.

[0139] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope 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, and form temperature distortion in the intake duct by mixing it with the cold air in the intake duct; A fuel supply device, the fuel supply device is divided into a fuel supply system and a fuel regulating system, the fuel supply system is used to supply the gas generating device with high-pressure fuel of a predetermined pressure and flow required for the test, and the fuel regulating system is used to regulate and control the flow or pressure of the supplied high-pressure fuel; A combustion-supporting gas supply device, the combustion-supporting gas supply device comprising a combustion-supporting gas source and a pressure regulating and conveying unit, for providing a combustion-supporting gas of a predetermined ratio required for the working conditions for the gas generating device to generate high-temperature gas; A process gas supply device, the 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 being connected to a fuel supply device and a combustion-supporting gas supply device respectively through the pressurized gas regulating unit, the valve-controlled gas regulating unit and the purge gas regulating unit, so as to meet the use requirements of the pressurized process gas supplied by the fuel supply device, the use requirements of the pressure regulating and conveying unit and the purge requirements of the combustion-supporting gas pipeline; A control device, the control device is connected to the gas generating device, the fuel supply device, the combustion-supporting gas supply device and the combustion-supporting gas supply device, and is used to realize valve and ignition control and pressure, flow rate and temperature rise measurement; 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 passage, and the flame guide assembly is connected to the outlet of the burner and extends deep into the interior of the air inlet passage.

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 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.

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 provides the required fuel to the gas generating device after passing through the fuel regulating shut-off valve, the flow meter and the throttle.

7. The process inlet temperature distortion test system according to claim 6, characterized in that: The pressure regulating and conveying unit includes a combustion-supporting supply stop 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 gas distribution requirements of the multi-way burners. The combustion-supporting supply quick-opening valve is arranged 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 the range of different high-temperature zones can be met.

8. The process inlet temperature distortion test system according to claim 7, characterized in that: The process gas source is a nitrogen gas source, and a process gas supply stop valve is provided at the outlet of the process gas source, and the process gas supply stop valve is connected to a fuel supply device and a combustion-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, wherein 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 use requirements of the pneumatic pressure regulating valve for control gas; The purge gas regulating unit comprises 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 combustion-supporting gas pipeline, so as to meet the purge demand of the combustion-supporting gas pipeline.

9. A method for performing a high temperature rise rate temperature distortion test based on the process inlet temperature distortion test system according to any one of claims 1 to 8, characterized in that: The test includes a pre-test preparation stage and an ignition high-temperature fuel 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 the site clearance, set up the warning area, and check whether the preparation of each post is in place; S103, according to the engine test task requirements and test outline content, determine the engine test state and test objectives, estimate the fuel flow rate and the gas supply pressure of the combustion gas of the predetermined ratio, and calibrate the opening parameters of each regulating valve of the required pressure and flow in advance; S104, determining the burner and the flame guide assembly 22 required to work and their combination method according to the distortion intensity and the phase angle of the high temperature zone; S105, completing the setting of relevant test parameters through the control device and completing the logic 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 the work; S108, open the process gas supply stop valve and the fuel supply front stop valve to fill the process gas supply pipe with nitrogen, adjust the boost gas regulating valve, and adjust it to the required pressure by observing the pressure gauge; S109, select a throttle according to demand, open the shut-off valve after the fuel supply, open the fuel regulating quick-opening valve for a predetermined time, let the fuel pass through the flow meter, let the fuel 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 by 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 program; S202, before the test, turn on the warning lights and alarm bells; S203, the control device starts to dynamically collect data; S204, supplying combustion-supporting gas and fuel in a time sequence and issuing an ignition signal; T0 timing: open the quick-opening valve for combustion-support supply, and the pressure sensor collects the pressure signal at the remote end to the control device; T0+X timing: open the fuel regulating quick-opening valve and trigger the ignition signal at the same time. The flow meter collects the pressure signal at the remote end and sends it to the control device. The fuel and the combustion-supporting gas burn in the burner. The high-temperature gas is sprayed into the air inlet through the flame guide 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-supporting supply quick-opening valve, and the current ignition timing ends; S205, the control device receives an engine surge signal, and when the engine surges during the test, the fuel regulating quick-opening valve and the combustion-supporting supply quick-opening valve are immediately closed; S206, repeating the ignition sequence according to the actual test conditions of the engine; S207, the engine test state enters the next procedure, and the relevant components of each device, the fuel supply amount, the combustion gas supply amount, and the ignition sequence time are reset and adjusted; 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 stop valve, and the fuel supply rear stop valve, open the fuel regulating stop 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 stop valve; S211, close the combustion-supporting supply stop valve, open the combustion-supporting supply quick-opening valve and the gas-purging quick-opening valve, purge the combustion-supporting gas pipeline, and after completion, close the gas-purging 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 is over, turn off the warning lights and alarm bells; S214: Perform data analysis based on the dynamically collected data to determine whether the engine test requirements are met.

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