Device and method for simulating thermal-state flushing of engine blade

Abstract

The invention belongs to the technical field of simulation devices, and provides a device and a method for simulating thermal-state flushing of engine blades, the device comprises cleaning equipment, the cleaning equipment comprises a second water storage tank and a third water storage tank, a heater is arranged in the second water storage tank, an outlet of the second water storage tank is communicated with a fourth pipeline, and a third electromagnetic valve is arranged on the fourth pipeline; a stirrer is arranged in the third water storage tank, and a salting device is arranged above the third water storage tank; an outlet of the third water storage tank is communicated with a fifth pipeline, and a fifth electromagnetic valve is arranged on the fifth pipeline; an outlet of the fourth pipeline and an outlet of the fifth pipeline communicate with an inlet of a sixth pipeline, and the end, away from the second water storage tank, of the sixth pipeline communicates with a cleaning opening of the engine; and a variable frequency pump and a sixth electromagnetic valve are arranged on the sixth pipeline. Through the arrangement of the second water storage tank and the third water storage tank, tests of thermal cleaning and simulation of salt attachment to the blades of the engine are achieved, and then whether the blades of the gas compressor can be damaged by long-time thermal washing or not is verified.

Description

Technical Field

[0001] This application belongs to the field of simulation device technology, and specifically relates to a device and method for simulating hot flushing of engine blades. Background Technology

[0002] As the power source for helicopters, turboshaft engines operate in coastal areas where the concentration of salt spray in the marine atmosphere is high. This salt is drawn into the turboshaft engine and evaporates, leaving residual salt adhering to the compressor blades. If not cleaned promptly, this salt will roughen the blade surface, leading to decreased compressor efficiency, affecting the turboshaft engine's performance, and ultimately threatening helicopter flight safety.

[0003] Commonly used cleaning methods are divided into cold cleaning and hot flushing. Cold cleaning refers to cleaning the turboshaft engine by spraying a cleaning solution into the cleaning port during cold operation at room temperature. Hot flushing refers to flushing the turboshaft engine by spraying a cleaning solution into the cleaning port while it is running at idle. Currently, hot flushing is commonly used to clean the surface of compressor blades. However, whether prolonged hot flushing will damage the compressor blades is currently unknown, as there are no experimental devices or methods to study this issue.

[0004] Therefore, there is a need for a test method and apparatus to verify the desalination capability of hot flushing of turboshaft engines and to verify whether long-term hot flushing will cause damage to compressor blades. Summary of the Invention

[0005] To address the aforementioned issues, this application proposes a simulated engine blade hot flushing device, comprising a cleaning device, an engine, and a test platform. The engine is fixedly mounted on the test platform, and the cleaning device is connected to the engine. The cleaning equipment includes a second water tank and a third water tank. The second water tank is equipped with a heater, and its outlet is connected to a fourth pipe. A third solenoid valve is installed on the fourth pipe. The third water tank is equipped with a stirrer, and a salt adder is installed above it. The outlet of the third water tank is connected to a fifth pipe, and a fifth solenoid valve is installed on the fifth pipe. The outlets of both the fourth and fifth pipes are connected to the inlet of a sixth pipe. The end of the sixth pipe furthest from the second water tank is connected to the engine cleaning port. A variable frequency pump and a sixth solenoid valve are installed on the sixth pipe.

[0006] Furthermore, a first water filter is installed on the fourth pipe, which is located between the second water storage tank and the third solenoid valve; a second water filter is installed on the fifth pipe, which is located between the third water storage tank and the fifth solenoid valve.

[0007] Furthermore, the simulated engine blade hot flushing device includes a seventh pipe, the inlet of which is connected to the inlet of the sixth solenoid valve, and a third hand valve is installed on the seventh pipe.

[0008] Furthermore, a third flow meter and a second thermometer are installed on the sixth pipe, located between the variable frequency pump and the inlet of the seventh pipe.

[0009] Furthermore, a first level gauge is installed on the outside of the second water tank, and a second level gauge is installed on the outside of the third water tank.

[0010] Furthermore, the simulated engine blade hot flushing device also includes a water injection device, which is connected to the inlet of both the second and third water tanks.

[0011] Furthermore, the water injection device includes a first water storage tank, the outlet of the first water storage tank is connected to a first pipe, the outlet of the first pipe is connected to the inlet of the second water storage tank and the inlet of the third water storage tank, and a first solenoid valve and a water pump are installed on the first pipe, with the first solenoid valve located on the side of the water pump closer to the first water storage tank.

[0012] Furthermore, the inlet of the second water tank is connected to a second pipe, the inlet of the second pipe is connected to the outlet of the first pipe, and a second solenoid valve and a first flow meter are installed on the second pipe, with the first flow meter located on the side of the second solenoid valve closer to the second water tank; the inlet of the third water tank is connected to a third pipe, the inlet of the third pipe is connected to the outlet of the first pipe, and a fourth solenoid valve and a second flow meter are installed on the third pipe, with the second flow meter located on the side of the fourth solenoid valve closer to the third water tank.

[0013] A method for simulating hot flushing of engine blades, using the aforementioned apparatus, includes the following steps: Pour purified water into the second and third water storage tanks; Start the salt dispenser and stirrer to mix the purified water in the third water tank into a salt solution with a salt content of ρ; When the engine is cold-running, open the fifth solenoid valve, the variable frequency pump, and the sixth solenoid valve to allow the brine from the third water tank to enter the engine at a rate Q. The engine running time is... Then close the fifth solenoid valve, the frequency converter pump, and the sixth solenoid valve; After starting the engine and operating it according to takeoff and landing conditions, control the engine to ground idle state, open the third solenoid valve, the variable frequency pump, and the sixth solenoid valve to allow the purified water in the second water tank to reach the required temperature. The air is mixed and a% of the airflow enters the engine during the operating period. Then close the third solenoid valve, the variable frequency pump, and the sixth solenoid valve. Stop the engine after it has stabilized. To obtain information on the salt content of the engine blade surface and the operating conditions of the blades and the engine; Obtain the engine's turbine inlet temperature. If the engine's turbine inlet temperature is ≤ Repeat the process of injecting purified water into the second and third water tanks until the process is repeated. Second-rate.

[0014] Furthermore, the calculation model for salinity ρ is as follows: ρ= k / (Q) ),in, For average daily flight counts, denoted as , where is the total air intake of the turboshaft engine, and k is the salinity of the near-shore atmosphere in the coastal area. Q represents the cold start time, and Q represents the liquid flow rate that can be drawn in during the cold start process.

[0015] Beneficial effects of this invention: 1. The cleaning equipment of the simulated engine blade hot flushing device of the present invention includes a second water tank and a third water tank. A heater is installed in the second water tank, a stirrer is installed in the third water tank, and a salt adder is installed above the third water tank. The outlet of the second water tank is connected to a fourth pipe, the outlet of the third water tank is connected to a fifth pipe, and the outlets of the fourth and fifth pipes are both connected to the inlet of a sixth pipe. The end of the sixth pipe away from the second water tank is connected to the cleaning port of the engine. By setting up the second and third water tanks, hot flushing and salt adsorption tests on simulated engine blades are realized, thereby verifying whether long-term hot flushing will damage the compressor blades.

[0016] 2. The simulated engine blade hot flushing device of the present invention includes a seventh pipe, the inlet of the seventh pipe is connected to the inlet of the sixth solenoid valve, and a third hand valve is provided on the seventh pipe. By setting the seventh pipe, the sixth pipe can be flushed, thereby improving the accuracy of the test.

[0017] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1A schematic diagram of the structure of the simulated engine blade hot flushing device in an embodiment of this application is shown.

[0020] Figure 2 A schematic diagram of the cleaning equipment in an embodiment of this application is shown.

[0021] Figure 3 A schematic flowchart of a simulated engine blade hot flushing method is shown in an embodiment of this application.

[0022] Explanation of reference numerals in the attached drawings: 10, cleaning equipment; 20, engine; 30, power absorption measuring device; 40, test platform; 50, exhaust ejector system; 101. First water storage tank; 102. First solenoid valve; 103. Water pump; 104. Second solenoid valve; 105. First flow meter; 106. Second water storage tank; 108. First thermometer; 109. First level gauge; 110. First manual valve; 111. Heater; 112. First water filter; 113. Third solenoid valve; 114. Fourth solenoid valve; 115. Second flow meter; 116. Salt dispenser; 117. Third water storage tank; 118. Second level gauge; 119. Agitator; 120. Second manual valve; 121. Second water filter; 122. Fifth solenoid valve; 123. Variable frequency pump; 124. Third flow meter; 125. Second thermometer; 126. Sixth solenoid valve; 127. Third manual valve; 11. First pipe; 12. Second pipe; 13. Third pipe; 14. Fourth pipe; 15. Fifth pipe; 16. Sixth pipe; 17. Seventh pipe. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] This invention provides a test method and apparatus for verifying the desalination hot flushing capability of a turboshaft engine, which is used to assess whether the turboshaft engine has the capability of desalination hot flushing during the development stage.

[0025] Example 1 refer to Figure 1A simulated engine blade hot flushing device includes a cleaning device 10, an engine 20, and a test platform 40. The engine 20 is fixedly installed on the test platform 40, and the cleaning device 10 is connected to the engine 20. The engine 20 is connected to a power absorption measuring device 30, and the power of the engine 20 is obtained through the power absorption measuring device 30. The exhaust ejector system 50 discharges the exhaust gas of the engine 20.

[0026] refer to Figure 2 The cleaning equipment 10 includes a second water tank 106 and a third water tank 117. A heater 111 is installed in the second water tank 106, and a stirrer 119 is installed in the third water tank 117. A salt adder 116 is installed above the third water tank 117. The salt adder 116 is an electric device that achieves quantitative salt addition through electric control. The outlet of the second water tank 106 is connected to a fourth pipe 14, and a third solenoid valve 113 is installed on the fourth pipe 14. The outlet of the third water tank 117 is connected to a fifth pipe 15, and a fifth solenoid valve 122 is installed on the fifth pipe 15. The outlets of the fourth pipe 14 and the fifth pipe 15 are both connected to the inlet of a sixth pipe 16. The end of the sixth pipe 16 away from the second water tank 106 is connected to the cleaning port of the engine 20. A variable frequency pump 123 and a sixth solenoid valve 126 are installed sequentially from the inlet to the outlet on the sixth pipe 16. By setting up a second water tank 106 and a third water tank 117, hot cleaning and salt adsorption tests on engine blades were achieved, verifying whether prolonged hot rinsing would damage compressor blades. A first thermometer 108 was installed in the second water tank 106 to obtain the temperature of the purified water in the second water tank 106 in real time. The first thermometer 108 and the heater 111 were electrically connected via a PLC to achieve automatic heating control, meeting the water temperature requirements during hot rinsing. A first manual valve 110 was installed at the drain port of the second water tank 106, and a second manual valve 120 was installed at the drain port of the third water tank 117, enabling drainage of the second water tank 106 and the third water tank 117. The first manual valve 110, the second manual valve 120, and the third manual valve 127 can be replaced by electrically controlled valves to meet remote control requirements.

[0027] This invention provides a test method and apparatus for verifying the desalination hot flushing capability of a turboshaft engine, used to assess its desalination hot flushing capability during the turboshaft engine development phase. It provides methods for calculating brine concentration and the number of hot flushing cycles. A hot flushing apparatus and its usage method are also provided. However, this invention is not specific to any particular type of turboshaft engine and does not offer universal guidance for desalination hot flushing tests on turboshaft engines.

[0028] Furthermore, a first water filter 112 is installed on the fourth pipe 14, located between the second water tank 106 and the third solenoid valve 113; a second water filter 121 is installed on the fifth pipe 15, located between the third water tank 117 and the fifth solenoid valve 122. By installing the first water filter 112 and the second water filter 121, the solution is filtered, preventing larger particles in the solution from damaging the engine 20.

[0029] In this embodiment, the simulated engine blade hot flushing device includes a seventh pipe 17, the inlet of which is connected to the inlet of the sixth solenoid valve 126, and a third hand valve 127 is provided on the seventh pipe 17. By setting the seventh pipe 17, the sixth pipe 16 can be flushed, thereby improving the accuracy of the test. The third hand valve 127 can be replaced by a two-position three-way valve.

[0030] Furthermore, a third flow meter 124 and a second thermometer 125 are installed on the sixth pipe 16, located between the variable frequency pump 123 and the inlet of the seventh pipe 17. The third flow meter 124 collects the flow rate of the pure water and the flow rate of the brine at the outlet of the sixth pipe 16, and the second thermometer 125 collects the temperature of the pure water and the temperature of the brine at the outlet of the sixth pipe 16.

[0031] In the above embodiments, another optional implementation is that a first level gauge 109 is provided on the outside of the second water tank 106, and a second level gauge 118 is provided on the outside of the third water tank 117. By providing the first level gauge 109 and the second level gauge 118, the liquid level inside the second water tank 106 and the third water tank 117 can be measured, preventing inaccurate tests caused by too much or too little solution. The first level gauge 109 and the second level gauge 118 can also be equipped with an alarm function to ensure that the second water tank 106 or the third water tank 117 has the minimum liquid volume required for a single simulated salt spray inhalation and hot rinsing test.

[0032] refer to Figure 2 The invention also includes a water injection device, which is connected to the inlet of the second water tank 106 and the inlet of the third water tank 117. The water injection device replenishes water to the second water tank 106 and the third water tank 117.

[0033] Furthermore, the water injection device includes a first water storage tank 101, the outlet of which is connected to a first pipe 11. The outlet of the first pipe 11 is also connected to the inlet of a second water storage tank 106 and the inlet of a third water storage tank 117. A first solenoid valve 102 and a water pump 103 are installed on the first pipe 11, with the first solenoid valve 102 located on the side of the water pump 103 closest to the first water storage tank 101. Purified water is replenished to the second water storage tank 106 and the third water storage tank 117 by opening the first solenoid valve 102 and the water pump 103.

[0034] Furthermore, the inlet of the second water tank 106 is connected to a second pipe 12, the inlet of which is connected to the outlet of the first pipe 11. A second solenoid valve 104 and a first flow meter 105 are installed on the second pipe 12, with the first flow meter 105 located on the side of the second solenoid valve 104 closer to the second water tank 106. The inlet of the third water tank 117 is connected to a third pipe 13, the inlet of which is connected to the outlet of the first pipe 11. A fourth solenoid valve 114 and a second flow meter 115 are installed on the third pipe 13, with the second flow meter 115 located on the side of the fourth solenoid valve 114 closer to the third water tank 117. By installing the second solenoid valve 104 and the fourth solenoid valve 114, purified water can be injected into the second water tank 106 and the third water tank 117 respectively. By installing the first flow meter 105 and the second flow meter 115, the amount of purified water injected into the second water tank 106 and the third water tank 117 can be recorded.

[0035] Furthermore, a salinity meter can be installed on the sixth pipe 16 to verify the brine concentration and the cleanliness of the flushing equipment during hot flushing.

[0036] Example 2 refer to Figure 3 A method for simulating hot flushing of engine blades, using the apparatus of Example 1, includes the following steps: Pure water is injected into the second water tank 106 and the third water tank 117. Further, before the experiment, the first water tank 101 is filled with pure water as a pure water source. The pump 103 and the first solenoid valve 102 are switched on and off, opening the pump 103, the first solenoid valve 102, and the second solenoid valve 104. Pure water is injected from the first water tank 101 into the second water tank 106 until the second water tank 106 reaches its upper limit of solution concentration. Then, the pump 103, the first solenoid valve 102, and the second solenoid valve 104 are closed. The pump 103, the first solenoid valve 102, and the fourth solenoid valve 114 are then opened. Pure water is injected from the first water tank 101 into the third water tank 117, and a specified salt concentration is added to prepare a saline solution with a salt concentration of ρ. The pump 103, the first solenoid valve 102, and the fourth solenoid valve 114 are then closed.

[0037] Start the salt adder 116 and stirrer 119 to mix the purified water in the third water tank 117 into a brine with a salt content of ρ; heater 111 heats the purified water in the second water tank 106 until it reaches the specified temperature. , Slightly larger than outdoor use (Adjustments during debugging before formal testing) To ensure that the water temperature measured by the second thermometer 125 during pure water rinsing meets the requirements (As required), start the salt adder 116 and stirrer 119. Stirrer 119 stirs the liquid in the third water tank 117 to make the salt dissolve evenly and fully.

[0038] When the engine 20 is cold-running, the fifth solenoid valve 122, the variable frequency pump 123, and the sixth solenoid valve 126 are opened, allowing the brine in the third water tank 117 to enter the engine 20 at a rate Q. The engine 20 operates for a period of time... Then close the fifth solenoid valve 122, the variable frequency pump 123, and the sixth solenoid valve 126; further, close all solenoid valves and manual valves, open the fifth solenoid valve 122 and the sixth solenoid valve 126, set the fifth solenoid valve 122 to have a flow rate of Q, and set the operating time of the fifth solenoid valve 122 to be [value missing]. The test steps simulating salt spray inhalation were completed, and the solution volume in the third water tank 117 decreased to [a certain value]. Close the fifth solenoid valve 122 and the sixth solenoid valve 126. After starting the engine and operating it according to the takeoff and landing conditions, control the engine 20 to the ground idle state, and open the third solenoid valve 113, the variable frequency pump 123, and the sixth solenoid valve 126 to allow the purified water in the second water tank 106 to reach the required temperature. The air is mixed and accounts for a% of the airflow into the engine. 20% of the operating time is specified. Then close the third solenoid valve 113, the variable frequency pump 123 and the sixth solenoid valve 126, and stop the engine after it has stabilized. Open the third solenoid valve 113 and the sixth solenoid valve 126, set the frequency of the variable frequency pump 123 to the flow rate of the turboshaft engine at ground slow state inlet air flow a% and open it to complete the hot flushing test procedure.

[0039] To obtain the salt content on the blade surface of engine 20 and the operating conditions of the blade and engine; Obtain the turbine inlet temperature of engine 20. If the turbine inlet temperature of engine 20 is ≤ Repeat the process of injecting purified water into the second water tank 106 and the third water tank 117 until the process is repeated. Second-rate.

[0040] Furthermore, the calculation model for salinity ρ is as follows: ρ= k / (Q) ),in, For average daily flight counts, denoted as , where is the total air intake of the turboshaft engine, and k is the salinity of the near-shore atmosphere in the coastal area. Q represents the cold start time, and Q represents the liquid flow rate that can be drawn in during the cold start process.

[0041] Specifically, it includes the following steps: S1, Pre-test preparation: Simulate the number of times the turboshaft engine inhales salt spray and the number of times it undergoes hot flushing for desalination during near-shore helicopter operation.

[0042] S11, according to GB / T4797.6, the salt spray content in the air decreases exponentially with altitude. Therefore, the intake of salt spray by the turboshaft engine occurs during helicopter takeoff and landing; the intake during level flight is negligible. Taking the salt content in the near-shore atmosphere in the coastal area as k, the total air intake of the turboshaft engine during a single helicopter takeoff and landing... The amount of salt inhaled by a helicopter in a single flight = k. Based on actual helicopter flight data, the average daily number of flights is If a hot desalination flush is performed once a day, the total amount of salt inhaled by the turboshaft engine before each hot desalination flush is: = = k. Cold running time determined by the turboshaft engine itself. The inhalable liquid flow rate Q during cold operation, and the concentration ρ prepared before the test. / (Q) )= k / (Q) The brine was injected into the internal flow channel of the turboshaft engine during cold operation before the test to simulate the inhalation of salt spray.

[0043] S12, Determination of the number of desalination hot flushing tests. In the development phase of a turboshaft engine, the target test cycle is the first overhaul period of the turboshaft engine. The flight time of a helicopter sortie Flying every day Each sortie, in nearshore environment Perform a desalination hot flush. This is the number of times a desalination hot flush is required during the initial overhaul of a turboshaft engine. = / ( ).

[0044] S13, the hot flushing flow rate of the turboshaft engine was determined to be a% of the engine's ground-state inlet airflow through a water ingestion test, and the hot flushing time was [missing information]. The highest temperature at the inlet of the power turbine that allows the turboshaft engine to draw in liquid before operation. .

[0045] S14, in addition, during actual daily helicopter flights, each flight cycle Cold flushing with cleaning fluid is used to clean the internal flow channels of a turboshaft engine. This process is required during the initial overhaul of a turboshaft engine. = / .

[0046] S2, turboshaft engine according to Figure 1 Install and connect the cleaning equipment 10, which is a hot rinsing device.

[0047] S3, turbine inlet temperature of turboshaft engine ≤ At that time, cold operation The system inhales salt water with a salt content of ρ at a rate of Q to simulate the salt spray inhalation of a turboshaft engine during near-shore helicopter operation.

[0048] S4, start the turboshaft engine and refer to the helicopter The turboshaft engines are operated during takeoff and landing.

[0049] S5, pull the engine down to ground stall state. After the state stabilizes, add pure water (temperature ____) that accounts for a% of the turboshaft engine's ground stall inlet airflow. Introduced into the engine inlet through the engine cleaning connector. After stopping the water spray, allow the engine to run stably (dry the engine) before stopping the car.

[0050] S6, when the inlet temperature of the turboshaft engine power turbine is ≤ Repeat the above experimental steps for a total of [number] times. Secondary hot flushing, during which each... / After the second hot flush, the cleaning equipment 10 was replaced with a cold cleaning equipment, and the internal flow channel of the turboshaft engine was cleaned with a cold cleaning solution once.

[0051] Further, open the third solenoid valve 113 and the third hand valve 127, and turn on the variable frequency pump 123 to drain the brine from the fourth pipe 14 and the sixth pipe 16 using the purified water in the second water tank 106. Close the third solenoid valve 113 and the variable frequency pump 123, open the sixth solenoid valve 126 to drain the brine from the pipeline between the third hand valve 127 and the turboshaft engine cleaning port, and then close the sixth solenoid valve 126 and the third hand valve 127.

[0052] Furthermore, the temperature at the inlet of the turboshaft engine's power turbine drops to... During the process, replenishment operations are performed on the second water storage tank 106 and the third water storage tank 117. The water pump 103, the first solenoid valve 102, and the second solenoid valve 104 are turned on to inject purified water into the second water storage tank 106 up to its maximum capacity. The water pump 103, the first solenoid valve 102, and the second solenoid valve 104 are shut off. The heater 111 automatically adds liquid to the second water storage tank 106. Complete the replenishment of the second water storage tank 106; Further, the water pump 103, the first solenoid valve 102, and the fourth solenoid valve 114 are turned on, and purified water is poured into the third water storage tank 117, followed by the addition of (( - ) The salts of ρ are used to prepare a salt solution with a salt concentration of ρ. Turn off the water pump 103, the first solenoid valve 102 and the second solenoid valve 104, and the stirrer 119 stirs the liquid in the third water tank 117 to make the salt evenly and fully dissolve, thus completing the replenishment of the third water tank 117.

[0053] Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A device for simulating hot flushing of engine blades, characterized in that, It includes a cleaning device (10), an engine (20) and a test platform (40), on which the engine (20) is fixedly installed, and the cleaning device (10) is connected to the engine (20); The cleaning equipment (10) includes a second water tank (106) and a third water tank (117). A heater (111) is installed in the second water tank (106). The outlet of the second water tank (106) is connected to a fourth pipe (14), and a third solenoid valve (113) is installed on the fourth pipe (14). A stirrer (119) is installed in the third water tank (117), and a salt adder (116) is installed above the third water tank (117). The outlet of the third water tank (117) is connected to the fifth pipe (15), and the fifth pipe (15) is equipped with a fifth solenoid valve (122); the outlet of the fourth pipe (14) and the outlet of the fifth pipe (15) are both connected to the inlet of the sixth pipe (16), and the end of the sixth pipe (16) away from the second water tank (106) is connected to the cleaning port of the engine (20); the sixth pipe (16) is equipped with a variable frequency pump (123) and a sixth solenoid valve (126).

2. The simulated engine blade hot flushing device according to claim 1, characterized in that, The fourth pipe (14) is provided with a first water filter (112), which is located between the second water tank (106) and the third solenoid valve (113); the fifth pipe (15) is provided with a second water filter (121), which is located between the third water tank (117) and the fifth solenoid valve (122).

3. The simulated engine blade hot flushing device according to claim 1, characterized in that, The simulated engine blade hot flushing device includes a seventh pipe (17), the inlet of which is connected to the inlet of the sixth solenoid valve (126), and a third hand valve (127) is provided on the seventh pipe (17).

4. The simulated engine blade hot flushing device according to claim 3, characterized in that, A third flow meter (124) and a second thermometer (125) are installed on the sixth pipe (16), and the third flow meter (124) and the second thermometer (125) are located between the variable frequency pump (123) and the inlet of the seventh pipe (17).

5. The simulated engine blade hot flushing device according to claim 1, characterized in that, A first level gauge (109) is provided on the outside of the second water tank (106), and a second level gauge (118) is provided on the outside of the third water tank (117).

6. A simulated engine blade hot flushing device according to any one of claims 1-5, characterized in that, The simulated engine blade hot flushing device also includes a water injection device, which is connected to the inlet of the second water tank (106) and the inlet of the third water tank (117).

7. The simulated engine blade hot flushing device according to claim 6, characterized in that, The water injection device includes a first water storage tank (101), the outlet of the first water storage tank (101) is connected to a first pipe (11), the outlet of the first pipe (11) is connected to the inlet of the second water storage tank (106) and the inlet of the third water storage tank (117), and a first solenoid valve (102) and a water pump (103) are provided on the first pipe (11), with the first solenoid valve (102) located on the side of the water pump (103) close to the first water storage tank (101).

8. The simulated engine blade hot flushing device according to claim 7, characterized in that, The inlet of the second water tank (106) is connected to a second pipe (12), the inlet of the second pipe (12) is connected to the outlet of the first pipe (11), and a second solenoid valve (104) and a first flow meter (105) are provided on the second pipe (12). The first flow meter (105) is located on the side of the second solenoid valve (104) near the second water tank (106). The inlet of the third water tank (117) is connected to a third pipe (13), the inlet of the third pipe (13) is connected to the outlet of the first pipe (11), and a fourth solenoid valve (114) and a second flow meter (115) are provided on the third pipe (13). The second flow meter (115) is located on the side of the fourth solenoid valve (114) near the third water tank (117).

9. A method for simulating hot flushing of engine blades, characterized in that, The apparatus according to any one of claims 1-8 comprises the following steps: Pure water is injected into the second water tank (106) and the third water tank (117); Start the salt adder (116) and stirrer (119) to mix the pure water in the third water tank (117) into a salt water with a salt content of ρ; When the engine (20) is cold-running, the fifth solenoid valve (122), the variable frequency pump (123), and the sixth solenoid valve (126) are opened, allowing the brine in the third water tank (117) to enter the engine (20) at a rate Q. The engine (20) operates for a period of time. Then close the fifth solenoid valve (122), the frequency converter pump (123), and the sixth solenoid valve (126). After starting the engine and operating it according to the takeoff and landing conditions, control the engine (20) to ground slow state, open the third solenoid valve (113), the variable frequency pump (123) and the sixth solenoid valve (126) to allow the pure water in the second water tank (106) to reach the required temperature. Mixed air, accounting for a% of the airflow, enters the engine (20) during the operating period. Then close the third solenoid valve (113), the frequency converter pump (123) and the sixth solenoid valve (126), and stop the engine after it has stabilized. Obtain the salt content on the blade surface of the engine (20) and the operating conditions of the blade and the engine; Obtain the turbine inlet temperature of engine (20). If the turbine inlet temperature of engine (20) is ≤ Then, repeat the steps of injecting purified water into the second water tank (106) and the third water tank (117) until the process is repeated. Second-rate.

10. A method for simulating hot flushing of engine blades according to claim 9, characterized in that, The calculation model for the salt content ρ is as follows: ρ= k / (Q) ),in, For average daily flight counts, denoted as , where is the total air intake of the turboshaft engine, and k is the salinity of the near-shore atmosphere in the coastal area. Q represents the cold start time, and Q represents the liquid flow rate that can be drawn in during the cold start process.

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