An aircraft gas source system humidity simulation device

Abstract

The application relates to the technical field of aircraft gas sources, and discloses a humidity simulation device for an aircraft gas source system, which comprises a gas source pipe used for passing test gas, has a variable-diameter section, and is smaller in pipe diameter at the variable-diameter section than in the rest of the pipe; a water tank used for storing water; a heater in communication with the water tank and used for vaporizing water flowing from the water tank; a gas lead pipe in communication between the water tank and the gas source pipe, one end of the gas lead pipe away from the water tank being located in the gas source pipe and opposite an air inlet end of the gas source pipe; and a gas suction pipe in communication between the heater and the variable-diameter section and closer to an air outlet end of the gas source pipe than the gas lead pipe. The application can reduce test cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aircraft gas source, and particularly relates to a humidity simulation device for an aircraft gas source system. BACKGROUND

[0002] At present, humidity testing of an aircraft gas source system and accessories under high temperature conditions is a test item of the aircraft gas source system, so as to test the performance of the aircraft gas source system under different humidity environments.

[0003] The existing way of providing humidity test gas is usually to directly spray water mist or water vapor in the gas supply pipeline, and to adjust the humidity by controlling the spraying amount and spraying time. However, this way not only needs to continuously provide a power source for the water mist spraying system during the test process, but also needs to continuously provide a power source for the gas supply pipeline. The structure is complex and the cost is high. SUMMARY

[0004] In order to reduce the test cost, the present application provides a humidity simulation device for an aircraft gas source system.

[0005] The present application provides a humidity simulation device for an aircraft gas source system, which adopts the following technical scheme:

[0006] A humidity simulation device for an aircraft gas source system includes a gas source pipe for passing test gas, having a variable diameter section, wherein the pipe diameter of the gas source pipe at the variable diameter section is smaller than the pipe diameter of the rest of the gas source pipe;

[0007] A water tank for storing water;

[0008] A heater in communication with the water tank, vaporizing the water flow from the water tank;

[0009] An air induction pipe in communication between the water tank and the gas source pipe, wherein one end of the air induction pipe away from the water tank is located in the gas source pipe and opposite to the air inlet end of the gas source pipe; and

[0010] An air suction pipe in communication between the heater and the variable diameter section, and closer to the air outlet end of the gas source pipe than the air induction pipe.

[0011] By adopting the above technical scheme, by setting the gas source pipe with the variable diameter section, the water vapor can be naturally sucked in by using the air flow power in the gas source pipe and the pressure difference between the variable diameter section and the rest of the gas source pipe without increasing an additional power source, thereby simplifying the structure and reducing the cost.

[0012] Optionally, the humidity simulation device further comprises a gas source temperature sensor and a steam temperature sensor; the gas source temperature sensor is arranged on the gas source pipe and used for monitoring the temperature of the test gas; meanwhile, the gas source temperature sensor controls the heater, so that the heater vaporizes the water flow into superheated steam with a temperature consistent with the temperature detected by the gas source temperature sensor; the steam temperature sensor is arranged on the gas suction pipe and used for monitoring the temperature of the superheated steam.

[0013] By adopting the above technical solution, the gas source temperature sensor and the steam temperature sensor are added, so that the temperatures of the test gas and the water vapor can be monitored in real time, and the temperature of the water vapor is adjusted by the heater to match the temperature of the test gas, thereby improving the accuracy and stability of the humidity simulation.

[0014] Optionally, the humidity simulation device further comprises an opening and closing valve arranged on the gas suction pipe and used for controlling the opening and closing of the gas suction pipe.

[0015] By adopting the above technical solution, the opening and closing valve is arranged, so that the opening and closing of the gas suction pipe can be conveniently controlled, the humidity simulation process is facilitated to be adjusted, and the flexibility and controllability of the test are improved.

[0016] Optionally, the humidity simulation device further comprises an electric regulating valve and a flow meter connected between the water tank and the heater in sequence; the flow meter is connected between the heater and the electric regulating valve; the electric regulating valve is used for adjusting the water flow, so that the water flow passing through the flow meter is consistent with the target humidification amount.

[0017] By adopting the above technical solution, the combination of the electric regulating valve and the flow meter can accurately control the water flow entering the heater, so as to accurately control the target humidification amount, and the accuracy and reliability of the humidity simulation are improved.

[0018] Optionally, the humidity simulation device further comprises a one-way valve arranged on the air guide pipe; the test gas in the gas source pipe enters the water tank through the one-way valve.

[0019] By adopting the above technical solution, the one-way valve is arranged to prevent the water in the water tank from flowing back into the gas source pipe, so as to ensure the smooth progress of the test and the normal operation of the equipment.

[0020] Optionally, an end of the air guide pipe away from the water tank is flared towards the gas suction end of the gas source pipe.

[0021] By adopting the above technical solution, the flared air guide pipe facilitates the introduction of the gas in the gas source pipe into the air guide pipe.

[0022] Optionally, the air inlet pipe comprises a first extension section and a first connecting section, one end of the first extension section extends into the gas source pipe, and the opposite end of the first extension section is located outside the gas source pipe and detachably connected with the first connecting section.

[0023] The air inlet pipe comprises a first extension section and a first connecting section, one end of the first extension section extends into the gas source pipe, and the opposite end of the first extension section is located outside the gas source pipe and detachably connected with the first connecting section.

[0024] By adopting the above technical scheme, the detachable connection of the air inlet pipe and the air inlet pipe makes the equipment more easily maintained and the gas source pipe replaced, so that the test requirements of different gas fluxes are met by replacing the gas source pipe, and the adaptability of the device is improved.

[0025] Optionally, the second extension section and the second connecting section have the same pipe diameter, and the second extension section and the second connecting section are connected through flange and bolt cooperation.

[0026] Optionally, the first connecting section is inserted into the first extension section, the outer diameter of the first connecting section is smaller than the inner diameter of the first extension section, and the first extension section and the first connecting section are connected through a connecting piece;

[0027] The connecting piece comprises an abutting ring and a gland; the abutting ring is coaxially sleeved on the first connecting section and threadedly moves thereon, and the outer diameter of the abutting ring is greater than the inner diameter of the first extension section and smaller than the outer diameter of the first extension section;

[0028] The gland surrounds the first extension section, when the abutting ring abuts against the end of the first extension section, the gland can move to abut against one side of the abutting ring away from the first extension section, and the end of the gland close to the first extension section surrounds the abutting ring and is threadedly sleeved on the outer wall of the first extension section.

[0029] By adopting the above technical scheme, the outer diameter of the first connecting section is smaller than the inner diameter of the first extension section, so that the butt joint 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 the connection between the first connecting section and the first extension section.

[0030] Optionally, the first connecting section is used for sequentially connecting a metal hose and a guide ring in the direction away from the first connecting section at one end of the first extending section; the metal hose is connected between the first connecting section and the guide ring, 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 extending section, the inner diameter of the guide ring gradually increases in the 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.

[0031] By adopting the above technical scheme, the guide ring and the metal hose can guide the airflow from the first extending section to the first connecting section, and reduce the airflow entering between the outer periphery of the first connecting section and the inner wall of the first extending section.

[0032] In summary, the present application has at least one of the following beneficial effects:

[0033] 1. By using the airflow power in the air source pipe to naturally inhale water vapor, the power source for continuously providing the spraying force in the traditional way is avoided, thereby simplifying the device structure and reducing the cost;

[0034] 2. The device system is well designed according to the stable range of normal work of different valve bodies, thereby improving the economy and reliability of system operation;

[0035] 3. By setting the air source temperature sensor, the steam temperature sensor, the electrically adjusted valve, and the flow meter and other components, the temperature and humidity of the test gas and the water vapor can be monitored and adjusted in real time, and the accurate control of the target humidification amount is realized. BRIEF DESCRIPTION OF DRAWINGS

[0036] Figure 1 is a structural schematic diagram of embodiment one of the present application;

[0037] Figure 2 is an enlarged structural schematic diagram of A in Figure 1

[0038] Figure 3 is an enlarged structural schematic diagram of B in Figure 1

[0039] Figure 4 is a cross-sectional view of the air guide pipe in embodiment two of the present application;

[0040] Figure 5 is a cross-sectional view of the air suction pipe in embodiment two of the present application;

[0041] Figure 6 is an exploded structural schematic diagram of the first connecting section and the gland in embodiment two of the present application.

[0042] ​​Explanation of reference signs: 1, air source pipe; 2, variable diameter section; 3, water tank; 4, heater; 5, air pipe; 51, first extension section; 52, first connecting section; 6, air suction pipe; 61, second extension section; 62, second connecting section; 7, air source temperature sensor; 8, vapor temperature sensor; 9, opening and closing valve; 10, electrically operated regulating valve; 11, flow meter; 12, one-way valve; 13, flange; 14, bolt; 15, abutting ring; 151, hard ring; 152, rubber ring; 16, gland; 161, abutting part; 162, connecting part; 163, abutting ring; 17, metal hose; 18, guide ring; 19, water feeding pipeline; 20, water feeding valve; 21, nozzle; 22, movable groove. DETAILED DESCRIPTION

[0043] The following will be described in detail in combination with the accompanying drawings. Figures 1-6 The present application will be further described in detail.

[0044] Example 1

[0045] The present application discloses an aircraft air source system humidity simulation device. Referring to Figure 1 and Figure 2 , the aircraft air source system humidity simulation device comprises an air source pipe 1, a water tank 3, a heater 4, an air pipe 5, an air suction pipe 6, an air source temperature sensor 7, a vapor temperature sensor 8, an electrically operated 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, and the air source pipe 1 and the remaining pipelines are made of hard pipelines resistant to high temperature and high pressure, and the remaining parts can be connected with the air source pipe 1 and have the characteristics of being resistant to high temperature and high pressure.

[0046] Referring to Figure 1 and Figure 2 , wherein the air source pipe 1 is in the shape of a straight pipe connected at two ends away from each other, the two ends of the air source pipe 1 away from each other are an air inlet end and an air outlet end, the air inlet end of the air source pipe 1 is connected with an air source, and the air outlet end of the air source pipe 1 is connected with a test piece. The part of the air source pipe 1 close to the air outlet end has a variable diameter section 2, the diameters of the remaining parts of the air source pipe 1 are consistent, the variable diameter section 2 is coaxial with the remaining part of the air source pipe 1, and the diameter of any part of the variable diameter section 2 is smaller than the diameter of the remaining part of the air source pipe 1, and at the same time, the diameter of the variable diameter section 2 gradually increases from the middle part to the two ends, so that the air source pipe 1 is in the shape of a Venturi pipe. In addition, the air source temperature sensor 7 is installed on the part of the air source pipe 1 close to the air inlet end to monitor the temperature of the air source.

[0047] Due to the reduction of the diameter and the decrease of the pressure at the variable diameter section 2, the variable diameter section 2 can attract the airflow to improve the rate of the airflow flowing in the air source pipe 1.

[0048] The air induction pipe 5, the water tank 3, the electric regulating valve 10, the flowmeter 11, the heater 4 and the air suction pipe 6 are sequentially communicated, and the end of the air induction pipe 5 away from the water tank 3 is communicated 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 suction pipe 6 away from the heater 4 is communicated to the variable diameter section 2, under the pressure difference between the variable diameter section 2 and the air inlet end of the air source pipe 1, part of the airflow in the air source pipe 1 will enter the air induction pipe 5 and flow out from the air suction pipe 6, so as to push the water and steam in the air induction pipe 5 to the air suction pipe 6.

[0049] With reference to Figure 1 , specifically, the water tank 3 is located in the external environment of the air source pipe 1 and below the air source pipe 1, and one side of the water tank 3 is communicated with a water adding pipe 19, and the water adding pipe 19 is provided with a water adding valve 20, and the water adding valve 20 and the water adding pipe 19 can add pure water to the water tank 3, so as to realize water replenishment of the water tank 3.

[0050] With reference to Figure 1 and Figure 3 , one end of the air induction pipe 5 is connected and communicated to the top of the water tank 3, and the end of the air induction pipe 5 away from the water tank 3 extends to the air source pipe 1 from the lower side of the air source pipe 1. The part of the air induction pipe 5 in the air source pipe 1 is bent towards the air inlet end of the air source pipe 1, so that the air inlet of the air induction pipe 5 faces the air inlet end of the air source pipe 1, and the air inlet of the air induction pipe 5 is flared towards the air inlet end of the air source pipe 1, so as to be able to introduce part of the airflow in the air source pipe 1 into the water tank 3 through the air induction pipe 5.

[0051] With reference to Figure 1 , the one-way valve 12 is installed on the air induction pipe 5 and located outside the air source pipe 1, and the test gas in the air induction pipe 5 enters the water tank 3 through the one-way valve 12, so as to prevent the water flow in the water tank 3 from flowing back, and improve the stability of the device. The one-way valve 12 can be spring type or gravity type.

[0052] The water tank 3, the electric regulating valve 10, the flowmeter 11 and the heater 4 are sequentially communicated through pipes. The flowmeter 11 is selected to be a laminar flowmeter 11, and the heater 4 is selected to be an electromagnetic heater 4.

[0053] According to the different atmospheric moisture contents dkg / kg.dr required to be simulated at different flight altitudes, the water vapor quantity M required to be added during the test is obtained by multiplying the engine bleed air quantity G required to be simulated, and the value is the target humidification quantity, which is equal to the water flow through the flowmeter 11. The flowmeter 11 is electrically connected with the electric regulating valve 10, the electric regulating valve 10 can receive the water flow electronic signal output by the flowmeter 11, and the electric regulating valve 10 is adjusted to make the water flow through the flowmeter 11 consistent with the target humidification quantity.

[0054] With reference to Figure 1 and Figure 2The heater 4 vaporizes the water flow from the flow meter 11 into superheated water vapor, the suction pipe 6 is communicated with the heater 4 at one end, and the other end of the suction pipe 6 extends into the variable diameter section 2 of the gas source pipe 1, and the part of the suction pipe 6 in the variable diameter section 2 is communicated with a plurality of nozzles 21 facing the gas outlet end of the gas source pipe 1. The superheated water vapor is sprayed from the nozzles 21 into the gas source pipe 1 through the suction pipe 6 by the suction force of the variable diameter section 2 and mixed with the test gas to adjust the humidity of the test gas.

[0055] The vapor temperature sensor 8 is installed on the suction pipe 6 for monitoring the temperature of the superheated water vapor. Further, the gas source temperature sensor 7 controls the heating temperature of the heater 4 through the controller (not shown in the figure), and the gas source temperature sensor 7 and the vapor temperature sensor 8 transmit signals to the controller after monitoring the temperature of the gas source, and the controller automatically adjusts the power of the heater 4 according to the feedback signals of the temperature sensors, so that the heater 4 vaporizes the water flow into superheated water vapor with the same temperature as the temperature monitored by the gas source temperature sensor 7, so that the water vapor entering the gas source pipe 1 and mixed with the test gas does not easily cause the temperature fluctuation of the test gas, and the stability of the device is improved.

[0056] The opening and closing valve 9 is installed on the suction pipe 6 and outside the gas source pipe 1, and is used to open and close the passage of the suction pipe 6, and the opening and closing valve 9 is selected as an electromagnetic valve.

[0057] The implementation principle of the aircraft gas source system humidity simulation device of the embodiment is that when the device starts to work, the water valve 20 is opened first, and a sufficient amount of pure water or softened water is injected into the water tank 3. Then, the water valve and all control valves are closed and the gas source is ventilated, when the temperature, pressure and flow of the gas source pipe 1 reach the target value and are stable for two minutes, the electric regulating valve 10 and the opening and closing valve 9 are opened synchronously, and the electric regulating valve 10 is adjusted to make the water flow through the flow meter 11 consistent with the target humidification amount. At the same time, the device takes the temperature value monitored by the gas source temperature sensor 7 as the target, adjusts the power of the heater 4, so that the water in the pipeline is completely vaporized into superheated water vapor with the same temperature as the target temperature value, and the superheated water vapor is attracted into the gas source pipe 1 and mixed with the test gas, so as to adjust the humidity of the test gas.

[0058] Embodiment two:

[0059] The difference between the embodiment and the embodiment one is the installation mode of the air inlet pipe 5 and the suction pipe 6.

[0060] Specifically, refer to Figure 1 and Figure 4In the embodiment, the air inlet pipe 5 comprises a first extension section 51 and a first connecting section 52. The first extension section 51 extends into the air source pipe 1 at one end and is fixed thereto, and the opposite 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. The other end of the first connecting section 52, which is 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.

[0061] With reference to Figure 1 and Figure 5 In the embodiment, the air inlet pipe 5 comprises a first extension section 51 and a first connecting section 52. The first extension section 51 extends into the air source pipe 1 at one end and is fixed thereto, and the opposite 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. The other end of the first connecting section 52, which is 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.

[0062] With reference to Figure 1 , Figure 4 and Figure 5 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 enable the air source pipe 1 to be replaced while maintaining the structure of the first connecting section 52 to the second connecting section 62, so that the humidity simulation device can replace the air source pipe 1 with different pipe diameters, and the device can replace the air source pipe 1 with different pipe diameters according to different test gas flow requirements, thereby improving the adaptability of the device.

[0063] With reference to Figure 5 Further, the end of the first extension section 51 close to the first connecting section 52, the end of the first connecting section 52 close to the first extension section 51, the end of the second extension section 61 close to the second connecting section 62, and the end of the second connecting section 62 close to the second extension section 61 are all parallel.

[0064] The second extension section 61 and the second connecting section 62 have the same pipe diameter, and the abutting ends of the second extension section 61 and the second connecting section 62 are coaxially sleeved and fixed with the flanges 13. The second extension section 61 and the second connecting section 62 are abutted and locked by the bolts 14, so that the second extension section 61 and the second connecting section 62 are coaxially abutted and communicated, and the opposite sides of the second extension section 61 and the second connecting section 62 have rubber layers to improve the sealing between the second extension section 61 and the second connecting section 62.

[0065] With reference to Figure 4 and Figure 5In order to reduce the difficulty in installation between 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 by an adaptive adjusting connector.

[0066] With reference to Figure 4 and Figure 6 Specifically, the connector comprises an abutting ring 15 and a pressing cap 16. The abutting ring 15 comprises a coaxially fixed hard ring 151 and a rubber ring 152. The hard ring 151 is in the shape of a circular ring, is coaxially sleeved on the outer wall of the first connecting section 52 and is threadedly moved thereon, and the outer diameter of the hard ring 151 is greater 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 circular cone, 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 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.

[0067] The pressing cap 16 comprises an abutting portion 161, a connecting portion 162 and a pressing ring 163. The abutting portion 161 is in the shape of a circular ring, and the connecting portion 162 is in the shape of a cylinder and is 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, the inner diameter of the abutting portion 161 is greater 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 and the outer wall of the connecting portion 162 are both provided with thread lines.

[0068] The pressing ring 163 is movably arranged in the abutting portion 161, the axis of the pressing ring 163 is parallel to the axis of the abutting portion 161, the inner diameter of the pressing ring 163 is smaller than the inner diameter of the abutting portion 161 and greater than the minimum outer diameter of the rubber ring 152, and the abutting portion 161 is coaxially provided with an annular movable groove 22 for horizontal movement of the pressing ring 163. The caliber of the movable groove 22 is greater than the outer diameter of the pressing ring 163 and smaller than the outer diameter of the abutting portion 161.

[0069] After the first connecting section 52 is inserted into the first extending section 51 and the second connecting section 62 is mounted with the second extending section 61, the hard ring 151 in the abutting ring 15 is towards the end of the first extending section 51, and the abutting part 161 of the pressing cover 16 is further away from the first extending section 51 than the hard ring 151. The hard ring 151 is screwed to abut the end of the first extending section 51, so that the hard ring 151 seals the gap between the end of the first extending section 51 and the first connecting section 52. Then the pressing cover 16 is moved towards the first extending section 51, so that the connecting part 162 is screwed on the outer wall of the first extending section 51, and the pressing ring 163 is pressed on the rubber ring 152 to make the rubber ring 152 deformed to tightly hold the first connecting section 52. In the process, the elastic force of the rubber ring 152 pushes the pressing ring 163 to move coaxially with the rubber ring 152, so that the first connecting section 52 is connected with the first extending section 51, and the sealing between the abutting ring 15, the first extending section 51 and the first connecting section 52 is improved.

[0070] Further, the first connecting section 52 is inserted into the first extending section 51, and the metal hose 17 and the guide ring 18 are connected in sequence away from the first connecting section 52. The metal hose 17 is a conventional corrugated metal pipe, which can be bent. The outer diameter and the 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 extending section 51. The inner diameter of the guide ring 18 gradually increases 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 extending section 51, the guide ring 18 and the metal hose 17 are also located in the first extending section 51. The guide ring 18 is coaxially attached to the first extending section 51, 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 extending 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.

[0071] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application. Any equivalent changes made according to the structure, shape and principle of the present application should be covered by the protection scope of the present application.

Claims

1. An aircraft gas source system humidity simulation device, characterized by, The humidity simulation device comprises: a gas source pipe for passing test gas, having a variable diameter section, the diameter of the gas source pipe at the variable diameter section being smaller than the diameter of the rest of the gas source pipe; a water tank for storing water; a heater in communication with the water tank, vaporizing water flowing from the water tank; a gas guide pipe in communication between the water tank and the gas source pipe, one end of the gas guide pipe away from the water tank being located in the gas source pipe and opposite the gas inlet end of the gas source pipe; and a gas suction pipe in communication between the heater and the variable diameter section, the gas suction pipe being closer to the gas outlet end of the gas source pipe than the gas guide pipe. The gas guide pipe comprises a first extension section and a first connecting section, one end of the first extension section extending into the gas source pipe, the opposite end of the first extension section being located outside the gas source pipe and detachably connected with the first connecting section. The gas suction pipe comprises a second extension section and a second connecting section, one end of the second extension section extending into the gas source pipe, the opposite end of the second extension section being located outside the gas source pipe and detachably connected with the second connecting section. The first connecting section is inserted into the first extension section, the outer diameter of the first connecting section being smaller than the inner diameter of the first extension section, and the first extension section and the first connecting section are connected by a connecting piece. The connecting piece comprises an abutting ring and a gland, the abutting ring comprising a coaxially fixed hard ring and a rubber ring, the hard ring being coaxially threadedly moved on the first connecting section, the rubber ring being coaxially enclosed on the first connecting section, and the outer diameter of the rubber ring gradually decreasing away from the hard ring, the outer diameters of the hard ring and the rubber ring being greater than the inner diameter of the first extension section and smaller than the outer diameter of the first extension section. The gland comprises an abutting portion, a connecting portion and a pressing ring, the abutting portion and the connecting portion being coaxially arranged and integrally formed and enclosing the first connecting section, the axis of the pressing ring being parallel to the axis of the abutting portion, the pressing ring being radially movable in the abutting portion, and the inner diameter of the pressing ring being smaller than the inner diameter of the abutting portion and greater than the minimum outer diameter of the rubber ring. When the hard ring abuts the end of the first extension section, the gland can be moved to the connecting portion coaxially threadedly sleeved on the outer wall of the first extension section, and the pressing ring abuts the outer periphery of the rubber ring and is coaxial with the rubber ring. The humidity simulation device further comprises a gas source temperature sensor and a vapor temperature sensor, the gas source temperature sensor being arranged on the gas source pipe for monitoring the temperature of the test gas, and the gas source temperature sensor controlling the heater to vaporize the water flow into superheated steam consistent with the temperature detected by the gas source temperature sensor, the vapor temperature sensor being arranged on the gas suction pipe for monitoring the temperature of the superheated steam.

2. A humidity simulation device for an aircraft gas source system according to claim 1, characterized in that: The humidity simulation device further comprises an opening and closing valve arranged on the gas suction pipe for controlling the opening and closing of the gas suction pipe.

3. A humidity simulation device for an aircraft gas source system according to claim 2, characterized in that: ​ 4. A humidity simulation device for an aircraft gas source system according to claim 1, characterized in that: The humidity simulation device further comprises an electrically-controlled regulating valve and a flow meter connected in sequence between the water tank and the heater; the flow meter is connected between the heater and the electrically-controlled regulating valve; the electrically-controlled regulating valve is used to regulate water flow so that the water flow through the flow meter is consistent with the target humidification amount.

5. A humidity simulation device for an aircraft gas source system according to claim 1, characterized in that: The humidity simulation device further comprises a one-way valve arranged on the air inlet pipe; the test gas in the air source pipe enters the water tank through the one-way valve.

6. A humidity simulation device for an aircraft gas source system according to claim 1, characterized in that: The end of the air inlet pipe away from the water tank is flared towards the air inlet end of the air source pipe.

7. A humidity simulation device for an aircraft gas source system according to claim 1, characterized in that: The second extension section has the same diameter as the second connecting section, and the second extension section and the second connecting section are connected by flange and bolt cooperation.

8. A humidity simulation device for an aircraft gas source system according to claim 1, characterized in that: The first connecting section is used to insert one end of the first extension section, and a metal hose and a guide ring are connected in sequence away from the first connecting section; the metal hose is connected between the first connecting section and the guide ring, 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 away from the metal hose, and the minimum inner diameter of the guide ring is consistent with the inner diameter of the metal hose.

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