Aircraft air source system humidity simulation device

Abstract

The invention relates to the technical field of aircraft gas sources, and discloses an aircraft gas source system humidity simulation device which comprises a gas source pipe used for introducing test gas and provided with a reducing section, and the pipe diameter of the gas source pipe is smaller than the pipe diameter of other parts of the gas source pipe compared with the pipe diameter of the reducing section; the water tank is used for storing water; the heater is communicated with the water tank and vaporizes water flow flowing in from the water tank; the air guide pipe is communicated between the water tank and the air source pipe, and the end, away from the water tank, of the air guide pipe is located in the air source pipe and is opposite to the air inlet end of the air source pipe; and the air suction pipe is communicated between the heater and the reducing section and is closer to the air outlet end of the air source pipe than the air guide pipe. The test cost can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of aircraft air sources, and in particular to a humidity simulation device for an aircraft air source system. Background Art

[0002] At present, humidity testing of aircraft air source systems and accessories under high temperature conditions is a test item for aircraft air source systems, in order to test the performance of aircraft air source systems under different humidity environments.

[0003] The existing method of providing humid test gas is usually to directly spray water mist or water vapor in the gas supply pipeline, and adjust the humidity by controlling the spraying amount and spraying time. However, this method not only requires continuous supply of air source to the gas supply pipeline during the test, but also requires a power source to continuously provide spraying force to the water mist spraying system, which is complex in structure and high in cost. Summary of the invention

[0004] In order to reduce testing costs, the present application provides an aircraft air source system humidity simulation device.

[0005] The present application provides an aircraft air source system humidity simulation device, which adopts the following technical solution: An aircraft air source system humidity simulation device comprises an air source pipe for passing a test gas, the air source pipe having a reduced diameter section, wherein the diameter of the air source pipe at the reduced diameter section is smaller than the diameter of the remaining part of the air source pipe; Water tank, used to store water; a heater, connected to the water tank, for vaporizing the water flowing in from the water tank; an air bleed pipe connected between the water tank and the air source pipe, wherein one end of the air bleed pipe away from the water tank is located in the air source pipe and opposite to the air inlet end of the air source pipe; and The air intake pipe is connected between the heater and the diameter-changing section and is closer to the air outlet end of the air source pipe than the air bleed pipe.

[0006] By adopting the above technical solution and providing an air source pipe with a variable diameter section, water vapor can be naturally inhaled by utilizing the air flow power in the air source pipe and the pressure difference between the variable diameter section and the rest of the air source pipe without adding an additional power source, thereby simplifying the structure and reducing costs.

[0007] Optionally, the humidity simulation device also includes an air source temperature sensor and a steam temperature sensor; the air source temperature sensor is arranged on the air source pipe to monitor the test gas temperature; at the same time, the air source temperature sensor controls the heater so that the heater vaporizes the water flow into superheated water vapor consistent with the detection temperature of the air source temperature sensor; the steam temperature sensor is arranged on the intake pipe to monitor the superheated water vapor temperature.

[0008] By adopting the above technical solution and adding a gas source temperature sensor and a vapor temperature sensor, the temperature of the test gas and water vapor can be monitored in real time, and the temperature of the water vapor can be adjusted by a heater to match the temperature of the test gas, thereby improving the accuracy and stability of the humidity simulation.

[0009] Optionally, the humidity simulation device also includes an opening and closing valve arranged on the intake pipe for controlling the opening and closing of the intake pipe passage.

[0010] By adopting the above technical solution, the setting of the opening and closing valve makes it easy to control the on-off of the suction pipe, which is convenient for adjusting the humidity simulation process and improves the flexibility and controllability of the test.

[0011] Optionally, the humidity simulation device also includes an electric regulating valve and a flow meter which are connected in sequence between the water tank and the heater; the flow meter is connected between the heater and the electric regulating valve; the electric regulating valve is used to adjust the water flow so that the water flow through the flow meter is consistent with the target humidification amount.

[0012] By adopting the above technical solution, the water flow entering the heater can be accurately controlled through the combination of the electric adjustment valve and the flow meter, thereby achieving accurate control of the target humidification amount and improving the accuracy and reliability of humidity simulation.

[0013] Optionally, the humidity simulation device further comprises a one-way valve arranged on the air duct, and the test gas in the air source pipe enters the water tank through the one-way valve.

[0014] By adopting the above technical solution, the setting of the one-way valve prevents the water in the water tank from flowing back into the air source pipe, thereby ensuring the smooth progress of the test and the normal operation of the equipment.

[0015] Optionally, one end of the air duct away from the water tank is expanded close to the air inlet end of the air source pipe.

[0016] By adopting the above technical solution, the expansion of the air duct makes it easier to introduce the gas in the gas source pipe into the air duct.

[0017] Optionally, the air duct comprises a first extension section and a first connecting section, one end of the first extension section extends into the air source tube, and the other end of the first extension section opposite to the first extension section is located outside the air source tube and is detachably connected to the first connecting section; The air intake pipe includes a second extension section and a second connecting section, wherein one end of the second extension section extends into the air source pipe, and the other end of the second extension section is located outside the air source pipe and is detachably connected to the second connecting section.

[0018] By adopting the above technical solution, the detachable connection between the air duct and the air suction duct makes the equipment easier to maintain and replace the gas source tube, thereby meeting the testing requirements of different gas fluxes by replacing the gas source tube, thereby improving the adaptability of the device.

[0019] Optionally, the second extension section and the second connection section have the same pipe diameter, and the second extension section and the second connection section are connected by a flange and bolts.

[0020] Optionally, the first connecting section is inserted into the first extending section, the outer diameter of the first connecting section is smaller than the inner diameter of the first extending section, and the first extending section is connected to the first connecting section via a connecting piece; The connecting member comprises an abutment ring and a gland; the abutment ring is coaxially sleeved and threadedly moved on the first connecting section, and the outer diameter of the abutment ring is larger than the inner diameter of the first extending section and smaller than the outer diameter of the first extending section; The pressure cover encloses the first extension section. When the abutment ring abuts against the end of the first extension section, the pressure cover can move until one end of the pressure cover away from the first extension section abuts against a side of the abutment ring away from the first extension section, and at the same time, one end of the pressure cover close to the first extension section encloses the abutment ring and is threadedly mounted on the outer wall of the first extension section.

[0021] By adopting the above technical solution, the outer diameter of the first connecting section is smaller than the inner diameter of the first extension section, so that the docking between the first connecting section and the first extension section can adapt to the position error between the first connecting section and the first extension section, thereby improving the convenience of connection between the first connecting section and the first extension section.

[0022] Optionally, the first connecting section is used to insert one end of the first extension section and is connected in sequence with a metal hose and a guide ring in a direction away from the first connecting section; the metal hose is connected between the first connecting section and the guide ring, and the outer diameter of the metal hose is consistent with the outer diameter of the first connecting section; the outer diameter of the guide ring is consistent with the inner diameter of the first extension section, the inner diameter of the guide ring gradually increases in a direction away from the metal hose, and the minimum inner diameter of the guide ring is consistent with the inner diameter of the metal hose.

[0023] By adopting the above technical solution, the guide ring and the metal hose can guide the airflow from the first extension section to the first connecting section, reducing the airflow entering between the outer periphery of the first connecting section and the inner wall of the first extension section.

[0024] In summary, the present application includes at least one of the following beneficial effects: 1. By utilizing the air flow power in the air source pipe to naturally inhale water vapor, the need for a power source that continuously provides spraying force in the traditional method is avoided, thereby simplifying the equipment structure and reducing costs; 2. The device system is well designed according to the stable range of normal operation of different valve bodies, which improves the economy and reliability of system operation; 3. By setting up components such as gas source temperature sensor, steam temperature sensor, electric regulating valve and flow meter, the temperature and humidity of the test gas and water vapor can be monitored and adjusted in real time, achieving precise control of the target humidification amount. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of Embodiment 1 of the present application; Figure 2 yes Figure 1 A schematic diagram of the enlarged structure at A in the middle; Figure 3 yes Figure 1 A schematic diagram of the enlarged structure at B in the middle; Figure 4 is a cross-sectional view of the air duct in the second embodiment of the present application; Figure 5 is a cross-sectional view of the air intake pipe in the second embodiment of the present application; Figure 6 It is a schematic diagram of the explosion structure between the first connecting section and the pressure cover in the second embodiment of the present application.

[0026] Explanation of the reference numerals in the accompanying drawings: 1. air source pipe; 2. reducing section; 3. water tank; 4. heater; 5. air duct; 51. first extension section; 52. first connecting section; 6. air intake pipe; 61. second extension section; 62. second connecting section; 7. air source temperature sensor; 8. steam temperature sensor; 9. opening and closing valve; 10. electric regulating valve; 11. flow meter; 12. one-way valve; 13. flange; 14. bolt; 15. abutment ring; 151. hard ring; 152. rubber ring; 16. pressure cover; 161. abutment part; 162. connecting part; 163. pressure ring; 17. metal hose; 18. guide ring; 19. water supply pipeline; 20. water supply valve; 21. nozzle; 22. movable groove. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-6 This application is described in further detail.

[0028] Embodiment 1: The present application embodiment discloses a humidity simulation device for an aircraft air source system. Figure 1 and Figure 2The aircraft air source system humidity simulation device includes an air source pipe 1, a water tank 3, a heater 4, an air bleed pipe 5, an air intake pipe 6, an air source temperature sensor 7, a steam temperature sensor 8, an electric valve, a flow meter 11, a one-way valve 12, and an opening and closing valve 9. The air source pipe 1 is a pipeline for passing dry test gas. The air source pipe 1 and other pipelines are made of high temperature and high pressure resistant hard pipes. The other parts can be connected to the air source pipe 1 and have the characteristics of high temperature and high pressure resistance.

[0029] Reference Figure 1 and Figure 2 , wherein the gas source pipe 1 is in the shape of a straight pipe with two ends far away from each other, and the two ends of the gas source pipe 1 far away from each other are respectively an inlet end and an outlet end. The inlet end of the gas source pipe 1 is connected to the gas source, and the outlet end of the gas source pipe 1 is connected to the test piece. The part of the gas source pipe 1 near the outlet end has a reducing section 2. The diameters of the remaining parts of the gas source pipe 1 except the reducing section 2 are consistent. The reducing section 2 is coaxial with the rest of the gas source pipe 1, and the diameter of any part of the reducing section 2 is smaller than the diameter of the rest of the gas source pipe 1. At the same time, the diameter of the reducing section 2 gradually expands from the middle part to the two ends, so that the gas source pipe 1 is in the shape of a Venturi tube. In addition, the gas source temperature sensor 7 is installed at the part of the gas source pipe 1 near the progress end to monitor the gas source temperature.

[0030] Since the pipe diameter at the reducing section 2 is reduced and the pressure is reduced, the reducing section 2 can attract the airflow to increase the flow rate of the airflow in the air source pipe 1 .

[0031] The air duct 5, the water tank 3, the electric regulating valve 10, the flow meter 11, the heater 4 and the air intake pipe 6 are connected in sequence, and the end of the air duct 5 away from the water tank 3 is connected to the air source pipe 1 and close to the air inlet end of the air source pipe 1, and the end of the air intake pipe 6 away from the heater 4 is connected to the reducing section 2. Under the pressure difference between the reducing section 2 and the air inlet end of the air source pipe 1, part of the air flow in the air source pipe 1 will enter the air duct 5 and flow out from the air intake pipe 6, using the driving force of the water path and the steam path from the air duct 5 to the air intake pipe 6.

[0032] Reference Figure 1 Specifically, the water tank 3 is located in the external environment of the gas source pipe 1 and below the gas source pipe 1. One side of the water tank 3 is connected to a water adding pipe 19. The water adding pipe 19 has a water adding valve 20. Pure water can be added to the water tank 3 through the water adding valve 20 and the water adding pipe 19 to replenish the water tank 3.

[0033] Reference Figure 1 and Figure 3One end of the air duct 5 is connected to and communicated with the top of the water tank 3, and the end of the air duct 5 away from the water tank 3 extends from the lower side of the air source pipe 1 to the air source pipe 1. The part of the air duct 5 located in the air source pipe 1 is bent toward the air inlet end of the air source pipe 1, so that the air inlet of the air duct 5 faces the air inlet end of the air source pipe 1, and the air inlet of the air duct 5 is expanded toward the air inlet end of the air source pipe 1, so that part of the air flow in the air source pipe 1 can be introduced into the water tank 3 through the air duct 5.

[0034] Reference Figure 1 The one-way valve 12 is installed on the air bleed pipe 5 and is located outside the air source pipe 1. The test gas in the air bleed pipe 5 enters the water tank 3 through the one-way valve 12 to prevent the water in the water tank 3 from flowing back and improve the stability of the device. The one-way valve 12 can be a spring type or a gravity type.

[0035] The water tank 3, the electric regulating valve 10, the flow meter 11 and the heater 4 are sequentially connected through pipelines. The flow meter 11 is a laminar flow meter 11, and the heater 4 is an electromagnetic heater 4.

[0036] According to the atmospheric moisture content dkg / kg.dr at different flight altitudes to be simulated during the test, multiplied by the engine bleed air volume G to be simulated, the amount of water vapor M to be added during the test is obtained, and this value is the target humidification amount, which is equal to the water flow rate through the flow meter 11. The flow meter 11 is electrically connected to the electric regulating valve 10, and the electric regulating valve 10 can receive the water flow electronic signal output by the flow meter 11. The electric regulating valve 10 is adjusted to make the water flow rate flowing through the flow meter 11 consistent with the target humidification amount.

[0037] Reference Figure 1 and Figure 2 The heater 4 vaporizes the water flowing in from the flow meter 11 into superheated water vapor. One end of the air intake pipe 6 is connected to the heater 4. The end of the air intake pipe 6 away from the heater 4 extends to the reduced diameter section 2 of the gas source pipe 1. The part of the air intake pipe 6 located in the reduced diameter section 2 is connected to a plurality of nozzles 21 facing the gas outlet end of the gas source pipe 1. The superheated water vapor is sprayed into the gas source pipe 1 from the nozzle 21 through the air intake pipe 6 by the suction force of the reduced diameter section 2 and mixed with the test gas to adjust the humidity of the test gas.

[0038] The steam temperature sensor 8 is installed on the air intake pipe 6 to monitor the temperature of the superheated steam. Furthermore, the gas source temperature sensor 7 controls the heating temperature of the heater 4 through a controller (not shown in the figure). After the gas source temperature sensor 7 and the steam temperature sensor 8 monitor the gas source temperature, they both transmit signals to the controller. The controller automatically adjusts the power of the heater 4 according to the feedback signal of the temperature sensor, so that the heater 4 vaporizes the water flow into superheated steam with the same temperature as that monitored by the gas source temperature sensor 7, so that when the water vapor enters the gas source pipe 1 and mixes with the test gas, it is not easy to cause fluctuations in the test gas temperature, thereby improving the stability of the device.

[0039] The opening and closing valve 9 is installed on the air intake pipe 6 and is located outside the air source pipe 1, and is used to open and close the passage of the air intake pipe 6, and the opening and closing valve 9 is an electromagnetic valve.

[0040] The implementation principle of the humidity simulation device for an aircraft air source system in the embodiment of the present application is as follows: when the device starts working, first open the water adding valve 20 to inject a sufficient amount of pure water or softened water into the water tank 3. Then close the water adding valve and all control valves and ventilate the air source. When the temperature, pressure, and flow of the air source pipe 1 reach the target value and stabilize for two minutes, open the electric regulating valve 10 and the opening and closing valve 9 synchronously, and adjust the electric regulating valve 10 so that the water flow through the flow meter 11 is consistent with the target humidification amount. At the same time, the device uses the temperature value monitored by the air source temperature sensor 7 as the target, adjusts the power of the heater 4, and completely vaporizes the water in the pipeline to form superheated water vapor with a temperature consistent with the target temperature value. The superheated water vapor is attracted to the air source pipe 1 and mixed with the test gas, thereby adjusting the moisture content of the test gas.

[0041] Embodiment 2: The difference between this embodiment and the first embodiment lies in the different installation methods of the air duct 5 and the air intake duct 6 .

[0042] Specifically, refer to Figure 1 and Figure 4 In this embodiment, the air duct 5 includes a first extension section 51 and a first connecting section 52. One end of the first extension section 51 extends and is fixed to the air source pipe 1, and the other end of the first extension section 51 is located outside the air source pipe 1 and is detachably connected to one end of the first connecting section 52. One end of the first connecting section 52 away from the first extension section 51 is connected to the water tank 3, and the one-way valve 12 is installed on the first connecting section 52.

[0043] Reference Figure 1 and Figure 5 In this embodiment, the air intake pipe 6 includes a second extension section 61 and a second connection section 62. One end of the second extension section 61 extends and is fixed to the gas source pipe 1, and the other end of the second extension section 61 is located outside the gas source pipe 1 and is detachably connected to one end of the second connection section 62. One end of the second connection section 62 away from the second extension section 61 is connected to the heater 4, and the opening and closing valve 9 and the steam temperature sensor 8 are both installed on the second connection section 62.

[0044] Reference Figure 1 , Figure 4 as well as Figure 5Through the detachable connection between the first extension section 51 and the first connecting section 52, and the detachable connection between the second extension section 61 and the second connecting section 62, the gas source tube 1 can be replaced while keeping the structure from the first connecting section 52 to the second connecting section 62 unchanged, so that the humidity simulation device can be replaced with gas source tubes 1 of different diameters, so that the device can be replaced with gas source tubes 1 of different diameters according to different test gas flow requirements, so as to improve the adaptability of the device.

[0045] Reference Figure 5 Furthermore, one end of the first extension section 51 close to the first connecting section 52, one end of the first connecting section 52 close to the first extension section 51, one end of the second extension section 61 close to the second connecting section 62, and one end of the second connecting section 62 close to the second extension section 61 are all parallel.

[0046] The second extension section 61 and the second connection section 62 have the same pipe diameter, and the butt ends of the second extension section 61 and the second connection section 62 are coaxially sleeved and fixed with flanges 13. The second extension section 61 and the second connection section 62 are butt-jointed through the flanges 13 and are fastened by bolts 14, so that the second extension section 61 and the second connection section 62 are coaxially pressed and connected, and a rubber layer is provided on the opposite side of the second extension section 61 and the second connection section 62 to improve the sealing between the second extension section 61 and the second connection section 62.

[0047] Reference Figure 4 and Figure 5 In order to reduce the difficulty in installing the first extension section 51 and the first connecting section 52 due to the slight difference between the distance between the first extension section 51 and the second extension section 61 and the distance between the first connecting section 52 and the second connecting section 62, the outer diameter of the first connecting section 52 is smaller than the inner diameter of the first extension section 51, and the first connecting section 52 is inserted into the first extension section 51, and the first connecting section 52 is locked to the first extension section 51 through an adaptively adjustable connecting piece.

[0048] Reference Figure 4 and Figure 6Specifically, the connecting member includes an abutment ring 15 and a gland 16. The abutment ring 15 includes a hard ring 151 and a rubber ring 152 which are coaxially fixed. The hard ring 151 is in the shape of a circular ring. The hard ring 151 is coaxially sleeved and threadedly moved on the outer wall of the first connecting section 52. The outer diameter of the hard ring 151 is larger than the inner diameter of the first extension section 51 and smaller than the outer diameter of the first extension section 51. The rubber ring 152 is made of elastic rubber and is in the shape of a conical ring. The rubber ring 152 is coaxially enclosed on the first connecting section 52. The inner diameter of the rubber ring 152 is close to the outer diameter of the first connecting section 52. The outer diameter of the rubber ring 152 gradually decreases in the direction away from the hard ring 151, and the maximum outer diameter of the rubber ring 152 is consistent with the outer diameter of the hard ring 151. In addition, the side of the hard ring 151 away from the rubber ring 152 also has a rubber layer.

[0049] The gland 16 includes an abutting portion 161, a connecting portion 162 and a pressing ring 163. The abutting portion 161 is annular, and the connecting portion 162 is cylindrical and coaxially integrally formed on one side of the abutting portion 161. The abutting portion 161 and the connecting portion 162 are both enclosed on the first connecting section 52. The outer diameter of the abutting portion 161 is consistent with the outer diameter of the connecting portion 162, and the inner diameter of the abutting portion 161 is larger than the outer diameter of the first connecting section 52 and smaller than the outer diameter of the hard ring 151. The inner diameter of the connecting portion 162 is consistent with the outer diameter of the first extension section 51, and the inner wall of the connecting portion 162 and the outer wall of the first extension section 51 both have thread lines.

[0050] The pressing ring 163 moves in the abutting portion 161, the axis of the pressing ring 163 is parallel to the axis of the abutting portion 161, and the inner diameter of the pressing ring 163 is smaller than the inner diameter of the abutting portion 161 and larger than the minimum outer diameter of the rubber ring 152. An annular movable groove 22 for horizontal movement of the pressing ring 163 is coaxially opened in the abutting portion 161, and the diameter of the movable groove 22 is larger than the outer diameter of the pressing ring 163 and smaller than the outer diameter of the abutting portion 161.

[0051] After the first connecting section 52 extends into the first extending section 51 and the second connecting section 62 and the second extending section 61 are installed, the hard ring 151 in the abutting ring 15 faces the end of the first extending section 51, and the abutting portion 161 of the gland 16 is further away from the first extending section 51 than the hard ring 151. The hard ring 151 is threadedly moved to abut against the end of the first extending section 51, so that the hard ring 151 closes the gap between the end of the first extending section 51 and the first connecting section 52. Then, the pressure cover 16 is moved toward the first extension section 51, so that the connection portion 162 is threadedly sleeved on the outer wall of the first extension section 51, and the pressing ring 163 is pressed against the rubber ring 152 to deform the rubber ring 152 and hold the first connection section 52 tightly. During the process, the elastic force of the rubber ring 152 pushes the pressing ring 163 to move coaxially with the rubber ring 152, thereby connecting the first connection section 52 with the first extension section 51 and improving the sealing between the abutting ring 15, the first extension section 51 and the first connection section 52.

[0052] Furthermore, the end of the first connecting section 52 inserted into the first extension section 51 is connected with the metal hose 17 and the guide ring 18 in sequence in the direction away from the first connecting section 52. The metal hose 17 is an existing corrugated metal tube that can be bent. The outer diameter and inner diameter of the metal hose 17 are consistent with the first connecting section 52. The guide ring 18 is coaxially fixed to the end of the metal hose 17 away from the first connecting section 52. The outer diameter of the guide ring 18 is consistent with the inner diameter of the first extension section 51. The inner diameter of the guide ring 18 gradually increases in the direction away from the metal hose 17, and the minimum inner diameter of the guide ring 18 is consistent with the inner diameter of the metal hose 17. When the first connecting section 52 is inserted into the first extension section 51, the guide ring 18 and the metal hose 17 are also located in the first extension section 51. The guide ring 18 and the first extension section 51 are coaxially fitted, and the metal hose 17 is adaptively bent according to the deviation between the axis of the first connecting section 52 and the axis of the first extension section 51. When the gas enters the first connecting section 52 from the first extending section 51 , the guide ring 18 and the metal hose 17 can guide the gas.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. An aircraft air source system humidity simulation device, characterized in that: include: A gas source pipe (1) is used for passing a test gas and has a reduced diameter section (2), wherein the diameter of the gas source pipe (1) at the reduced diameter section (2) is smaller than the diameter of the remaining portion of the gas source pipe (1); A water tank (3) for storing water; A heater (4) is connected to the water tank (3) and vaporizes the water flowing into the water tank (3); an air duct (5) connected between the water tank (3) and the air source pipe (1), wherein one end of the air duct (5) away from the water tank (3) is located in the air source pipe (1) and is opposite to an air inlet end of the air source pipe (1); and The air intake pipe (6) is connected between the heater (4) and the reducing section (2), and is closer to the air outlet end of the air source pipe (1) than the air intake pipe (5).

2. The aircraft air source system humidity simulation device according to claim 1, characterized in that: The humidity simulation device further comprises an air source temperature sensor (7) and a steam temperature sensor (8); the air source temperature sensor (7) is arranged on the air source pipe (1) and is used to monitor the temperature of the test gas; at the same time, the air source temperature sensor (7) controls the heater (4) so ​​that the heater (4) vaporizes the water flow into superheated water steam having a temperature consistent with the detection temperature of the air source temperature sensor (7); the steam temperature sensor (8) is arranged on the air intake pipe (6) and is used to monitor the temperature of the superheated water steam.

3. The aircraft air source system humidity simulation device according to claim 2, characterized in that: The humidity simulation device also includes an opening and closing valve (9) arranged on the air intake pipe (6) and used for controlling the opening and closing of the passage of the air intake pipe (6).

4. The aircraft air source system humidity simulation device according to claim 1, characterized in that: The humidity simulation device further comprises an electric regulating valve (10) and a flow meter (11) which are sequentially connected between the water tank (3) and the heater (4); the flow meter (11) is connected between the heater (4) and the electric regulating valve (10); the electric regulating valve (10) is used to adjust the water flow rate so that the water flow rate passing through the flow meter (11) is consistent with the target humidification amount.

5. The aircraft air source system humidity simulation device according to claim 1, characterized in that: The humidity simulation device also includes a one-way valve (12) arranged on the air duct (5), and the test gas in the air source pipe (1) enters the water tank (3) through the one-way valve (12).

6. The aircraft air source system humidity simulation device according to claim 1, characterized in that: One end of the air duct (5) away from the water tank (3) is expanded along a portion close to the air inlet end of the air source pipe (1).

7. The aircraft air source system humidity simulation device according to claim 1, characterized in that: The air duct (5) comprises a first extension section (51) and a first connecting section (52); one end of the first extension section (51) extends into the air source tube (1); the other end of the first extension section (51) opposite to the first extension section (51) is located outside the air source tube (1) and is detachably connected to the first connecting section (52); The air intake pipe (6) comprises a second extension section (61) and a second connecting section (62); one end of the second extension section (61) extends into the air source pipe (1); the other end of the second extension section (61) is located outside the air source pipe (1) and is detachably connected to the second connecting section (62).

8. The aircraft air source system humidity simulation device according to claim 7, characterized in that: The second extension section (61) and the second connection section (62) have the same pipe diameter, and the second extension section (61) and the second connection section (62) are connected to each other via a flange (13) and bolts (14).

9. The aircraft air source system humidity simulation device according to claim 8, characterized in that: The first connecting section (52) is inserted into the first extending section (51), the outer diameter of the first connecting section (52) is smaller than the inner diameter of the first extending section (51), and the first extending section (51) and the first connecting section (52) are connected via a connecting piece; The connecting member comprises an abutment ring (15) and a pressure cover (16); the abutment ring (15) is coaxially sleeved and threadedly movable on the first connecting section (52); the outer diameter of the abutment ring (15) is larger than the inner diameter of the first extension section (51) and smaller than the outer diameter of the first extension section (51); The pressure cover (16) encloses the first extension section (51), and when the abutment ring (15) abuts against the end of the first extension section (51), the pressure cover (16) can move until one end of the pressure cover (16) away from the first extension section (51) abuts against a side of the abutment ring (15) away from the first extension section (51), and at the same time, one end of the pressure cover (16) close to the first extension section (51) encloses the abutment ring (15) and is threadedly sleeved on the outer wall of the first extension section (51).

10. The aircraft air source system humidity simulation device according to claim 9, characterized in that: One end of the first connecting section (52) is used to be inserted into the first extension section (51), and is connected to a metal hose (17) and a guide ring (18) in sequence in a direction away from the first connecting section (52); the metal hose (17) is connected between the first connecting section (52) and the guide ring (18), and the outer diameter of the metal hose (17) is consistent with the outer diameter of the first connecting section (52); the outer diameter of the guide ring (18) is consistent with the inner diameter of the first extension section (51), the inner diameter of the guide ring (18) gradually increases in a direction away from the metal hose (17), and the minimum inner diameter of the guide ring (18) is consistent with the inner diameter of the metal hose (17).

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