Adjustable pipeline humidification experiment system for pneumatic system and application thereof

Abstract

The present application belongs to the technical field of pneumatic system, and discloses an adjustable pipeline humidification experiment system for pneumatic system and application thereof. The experiment system comprises an air compressor, a high-pressure air tank, a first high-pressure air pressure reducing valve, a second high-pressure air pressure reducing valve, a gas-liquid cylinder, an adjustable pipeline humidifier and a pressure measurement subsystem. The outlet of the air compressor is connected to the inlet of the high-pressure air tank, the outlet of the high-pressure air tank is respectively connected to the inlet of the first high-pressure air pressure reducing valve and the inlet of the second high-pressure air pressure reducing valve, and the outlet of the first high-pressure air pressure reducing valve is connected to the air cavity of the gas-liquid cylinder. The liquid cavity of the gas-liquid cylinder is connected to the second port of the adjustable pipeline humidifier. The outlet of the second high-pressure air pressure reducing valve is connected to the first port of the adjustable pipeline humidifier, the third port of the adjustable pipeline humidifier is connected to a measured element, and the pressure measurement subsystem is also connected to the measured element. The present application can realize humidity adjustment of high-pressure humid air.

Description

Technical Field

[0001] This invention belongs to the technical field of pneumatic systems, and more specifically, relates to an adjustable pipeline humidification experimental system for pneumatic systems and its application. Background Technology

[0002] Pneumatic technology uses compressed air as its working medium, and has advantages such as low cost, no pollution, and easy operation. It is widely used in various fields of modern industry.

[0003] As pneumatic systems evolve towards miniaturization, integration, and high pressure, internal condensation and icing phenomena have emerged, severely impacting their performance, reliability, and safety. For example, in high-pressure air pressure reducing valves, the expansion of high-pressure humid air at the valve port causes a rapid drop in pressure and temperature. When the gas temperature falls below the saturation temperature of water vapor, the water vapor spontaneously condenses. The presence of these droplets corrodes the valve core, affecting its performance, and in severe cases, can even cause icing and blockage of the valve port, threatening the safety of the pneumatic system.

[0004] This phenomenon of condensation and icing inside pneumatic components often occurs in harsh working environments, such as ships and oceans. In such harsh working environments, the humidity of the compressed air in the pneumatic system is much higher than that in conventional laboratory equipment, making it difficult to experimentally study the mechanism of icing and condensation on pneumatic components.

[0005] Therefore, there is an urgent need to develop an adjustable pipeline humidification experimental system for pneumatic systems and a method for simulating component icing and condensation. Summary of the Invention

[0006] To address the aforementioned deficiencies or improvement needs of existing technologies, this invention provides an adjustable pipeline humidification experimental system for pneumatic systems and its application. It can achieve different humidity levels, simulate different harsh working conditions of pneumatic systems, assist in verifying the reliability of various pneumatic components, explore the effects of condensation and icing on pneumatic components, and help to further optimize and improve the performance of pneumatic components.

[0007] To achieve the above objectives, according to one aspect of the present invention, an adjustable pipeline humidification experimental system for a pneumatic system is provided, the experimental system comprising an air compressor, a high-pressure air tank, a first high-pressure air pressure reducing valve, a second high-pressure air pressure reducing valve, a gas-liquid dual-purpose cylinder, an adjustable pipeline humidifier, and a pressure measurement subsystem;

[0008] The outlet of the air compressor is connected to the inlet of the high-pressure gas tank. The outlet of the high-pressure gas tank is connected to the inlet of the first high-pressure air pressure reducing valve and the inlet of the second high-pressure air pressure reducing valve. The outlet of the first high-pressure air pressure reducing valve is connected to the air chamber of the gas-liquid dual-purpose cylinder. The liquid chamber of the gas-liquid dual-purpose cylinder is connected to the second port of the adjustable pipeline humidifier. The outlet of the second high-pressure air pressure reducing valve is connected to the first port of the adjustable pipeline humidifier. The third port of the adjustable pipeline humidifier is connected to the measured element. The pressure measurement subsystem is also connected to the measured element.

[0009] The adjustable pipeline humidifier is used to mix high-pressure air, after its pressure has been adjusted by the second high-pressure air pressure reducing valve, with water from the gas-liquid dual-purpose cylinder to obtain high-pressure humid air. The humidity of the high-pressure humid air is adjusted by adjusting the opening of its own valve port. The measurement subsystem is used to measure the pressure distribution along the internal flow channel of the measured element.

[0010] Furthermore, the experimental system also includes an electronic balance, which is used to measure the weight gain of the tested element after condensation and icing occur inside the tested element, and then indirectly obtain the degree of condensation and icing inside the tested element based on the obtained weight gain.

[0011] Furthermore, the experimental system also includes a displacement sensor connected to the piston rod of the gas-liquid dual-purpose cylinder, which is used to measure the displacement change of the liquid-gas dual-purpose cylinder.

[0012] Furthermore, the experimental system also includes a first pressure gauge, which is installed on the high-pressure gas tank and is used to measure the pressure inside the high-pressure gas tank.

[0013] Furthermore, the experimental system also includes a second pressure gauge and a third pressure gauge. The second pressure gauge is installed on the pipeline between the first high-pressure air pressure reducing valve and the gas-liquid dual-purpose cylinder; the third pressure gauge is installed on the pipeline between the second high-pressure air pressure reducing valve and the adjustable pipeline humidifier.

[0014] Furthermore, the second high-pressure air pressure reducing valve and the third pressure gauge form a pressurization branch; the first high-pressure air pressure reducing valve, the second pressure gauge, and the gas-liquid dual-purpose cylinder form a humidification branch; in the pressurization branch, the high-pressure air from the high-pressure gas tank is pressure-regulated by the second high-pressure air pressure reducing valve, and the third pressure gauge is used to measure the pressure of the high-pressure air after being regulated by the second high-pressure air pressure reducing valve, and delivers the regulated high-pressure air to the first port of the adjustable pipeline humidifier, and then into the adjustable pipeline humidifier; in the humidification branch, the first high-pressure air pressure reducing valve regulates the pressure of the high-pressure air from the high-pressure gas tank, and the second pressure gauge is used to measure the pressure of the high-pressure air after being regulated by the first high-pressure air pressure reducing valve, and the regulated high-pressure air acts on the air chamber of the gas-liquid dual-purpose cylinder to push its water chamber, pressurizing the water to the second port of the adjustable pipeline humidifier, and then into the adjustable pipeline humidifier.

[0015] Furthermore, the experimental system also includes a fourth pressure gauge and a throttle valve, wherein the fourth pressure gauge is connected to the tested element and the throttle valve.

[0016] Furthermore, the experimental system also includes a filter connected to the air compressor and the high-pressure gas tank.

[0017] Furthermore, the adjustable pipeline humidifier includes an adapter, a rotary valve core, and a three-way interface. The adapter is connected to the three-way interface, and the rotary valve core is disposed within the three-way interface and located within the adapter. A second port is formed on the adapter and is connected to one interface of the three-way interface through the rotary valve core. The humidity of the high-pressure humid air is changed by adjusting the opening degree of the interface connecting the three-way interface and the adapter through the rotary valve core.

[0018] This invention provides a method for simulating condensation and icing of components. The method uses the adjustable pipeline humidification experimental system for pneumatic systems described above to conduct condensation and icing simulation experiments on the components.

[0019] In summary, compared with the prior art, the adjustable pipeline humidification experimental system for pneumatic systems and its application provided by the present invention mainly have the following advantages:

[0020] Beneficial effects:

[0021] 1. The experimental system described above can adjust the humidity to simulate different harsh working conditions of the pneumatic system, help verify the reliability of various pneumatic components, explore the effects of condensation and icing on pneumatic components, and help to further optimize and improve the performance of pneumatic components.

[0022] 2. The measurement method and device have a simple structure, low experimental cost, high efficiency, and are applicable to pneumatic technology.

[0023] 3. The rotary valve core of the adjustable pipeline humidifier is equipped with a nozzle. Water is sprayed out through the nozzle structure under high pressure to achieve atomization. The sprayed water mist is mixed with high-pressure air at the three-way interface, which can achieve humidification of the inside of the pneumatic system pipeline.

[0024] 4. An adjustable pipeline humidifier is used to mix water from the humidification branch and high-pressure air from the pressurization branch. The humidity of the mixed high-pressure humidified air can be changed by adjusting the opening of its own valve. It is easy to adjust and has strong applicability. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an adjustable pipeline humidification experimental system for a pneumatic system provided by the present invention;

[0026] Figure 2 yes Figure 1 A schematic diagram of the adjustable pipeline humidifier in the experimental system for adjustable pipeline humidification of pneumatic systems.

[0027] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein: 1-air compressor, 2-filter, 3-high pressure air tank, 4-first pressure gauge, 5-first high pressure air pressure reducing valve, 6-second pressure gauge, 7-gas-liquid dual-purpose cylinder, 8-second high pressure air pressure reducing valve, 9-third pressure gauge, 10-adjustable pipeline humidifier, 11-pressure measurement subsystem, 12-measured element, 13-electronic balance, 14-fourth pressure gauge, 15-throttle valve, 17-adapter, 18-rotary valve core, 19-tee connector. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0029] This invention provides an adjustable pipeline humidification experimental system for pneumatic systems, which is applicable to a wide range of pressure pneumatic systems. It can achieve different humidity adjustments, simulate different harsh working conditions of pneumatic systems, help verify the reliability of various pneumatic components, explore the effects of icing and condensation on pneumatic components, and help to further optimize and improve the performance of pneumatic components. Moreover, the experimental system has a simple structure, low cost, and high efficiency.

[0030] This invention utilizes an adjustable pipe humidifier, employing the high-speed jet principle of high-pressure gas to mix high-pressure gas with water to form high-pressure humid air. Different humidity levels of high-pressure humid air can be obtained by varying the high-pressure gas pressure and the opening degree of the adjustable pipe humidifier. Pressure changes within the high-pressure gas tank 3 are measured using a pressure gauge, and the displacement of the gas-liquid dual-purpose cylinder 7 is measured using a displacement sensor. The humidity of the high-pressure humid air is calculated through theoretical derivation, thereby accurately simulating the harsh operating conditions of the tested component 12. Furthermore, the pressure measurement subsystem 11 obtains the pressure distribution along the flow path within the tested component 12, and the weight gain of the tested component 12 is measured using a precision electronic balance 13, thus obtaining the degree of icing and condensation on the tested component 12 and its impact on the component's flow field characteristics.

[0031] Please see Figure 1 and Figure 2 The experimental system includes an air compressor 1, a filter 2, a first pressure gauge 4, a high-pressure air tank 3, a first high-pressure air pressure reducing valve 5, a second pressure gauge 6, a gas-liquid dual-purpose cylinder 7, a second high-pressure air pressure reducing valve 8, a third pressure gauge 9, an adjustable pipeline humidifier 10, a displacement sensor, a pressure measurement subsystem 11, a measured element 12, an electronic balance 13, a fourth pressure gauge 14, and a throttle valve 15.

[0032] The filter 2 connects the outlet of the air compressor 1 and the inlet of the high-pressure air tank 3. The first pressure gauge 4 is mounted on the high-pressure air tank 3 and measures the pressure inside. The outlet of the high-pressure air tank 3 is connected to one port of the first high-pressure air pressure reducing valve 5 and one port of the second high-pressure air pressure reducing valve 8. The other port of the first high-pressure air pressure reducing valve 5 is connected to the air chamber of the gas-liquid dual-purpose cylinder 7, and the liquid chamber of the gas-liquid dual-purpose cylinder 7 is connected to the second port of the adjustable pipeline humidifier 10. The second pressure gauge 6 is mounted on the pipeline between the first high-pressure air pressure reducing valve 5 and the gas-liquid dual-purpose cylinder 7. The displacement sensor is mounted on the piston rod of the gas-liquid dual-purpose cylinder 7. The other port of the second high-pressure air pressure reducing valve 8 is connected to the first port of the adjustable pipeline humidifier 10. The third pressure gauge 9 is mounted on the pipeline between the second high-pressure air pressure reducing valve 8 and the adjustable pipeline humidifier 10. The third port of the adjustable pipeline humidifier 10 is connected to the measured element 12, which is also connected to the pressure measurement subsystem 11 and the throttle valve 15. The fourth pressure gauge 14 is connected to the measured element 12 and the throttle valve 15. The electronic balance 13 is used to measure the weight gain of the measured element 12 when condensation or icing occurs.

[0033] The second high-pressure air pressure reducing valve 8 and the third pressure gauge 9 form a pressurization branch. The first high-pressure air pressure reducing valve 5, the second pressure gauge 6, and the gas-liquid dual-purpose cylinder 7 form a humidification branch. In the pressurization branch, the high-pressure air from the high-pressure air tank 3 has its pressure regulated by the second high-pressure air pressure reducing valve 8. The third pressure gauge 9 is used to measure the pressure of the high-pressure air after it has been regulated by the second high-pressure air pressure reducing valve 8, and then delivers the regulated high-pressure air to the first port of the adjustable pipeline humidifier 10, where it then enters the adjustable pipeline humidifier 10.

[0034] In the humidification branch, the first high-pressure air pressure reducing valve 5 will regulate the pressure of the high-pressure air from the high-pressure air tank 3. The second pressure gauge 6 is used to measure the pressure of the high-pressure air after being regulated by the first high-pressure air pressure reducing valve 5. The regulated high-pressure air acts on the air chamber of the gas-liquid dual-purpose cylinder 7 to push its water chamber, pressurizing the water to the second port of the adjustable pipeline humidifier 10, and then entering the adjustable pipeline humidifier 10.

[0035] The adjustable pipeline humidifier 10 is used to mix water from the humidification branch and high-pressure air from the pressurization branch, and changes the humidity of the resulting high-pressure humid air by adjusting its own valve opening. The high-pressure humid air enters the tested element 12 through the third port. The pressure measurement subsystem 11 is used to measure the pressure distribution along the flow path inside the tested element 12. The electronic balance 13 is used to measure the weight gain of the tested element 12 after condensation and icing occur inside it, and indirectly obtains the degree of condensation and icing inside the tested element 12 based on the obtained weight gain. The throttle valve 15 is used to adjust the downstream pressure of the tested element 12. The displacement sensor is used to measure the displacement change of the gas-liquid dual-purpose cylinder 7.

[0036] The adjustable pipeline humidifier 10 includes an adapter 17, a rotary valve core 18, and a three-way connector 19. The adapter is connected to the three-way connector, and the rotary valve core is disposed within the three-way connector and located within the adapter. A second port is formed on the adapter and is connected to one port of the three-way connector via the rotary valve core. By adjusting the rotary valve core, the opening degree of the port connecting the three-way connector and the adapter can be adjusted, thereby changing the humidity of the high-pressure humidified air. In other words, the humidity of the high-pressure humidified air is changed by adjusting the valve opening degree of the rotary valve core.

[0037] In another embodiment, the adjustable pipeline humidifier 10 is a mechanical atomizing device, comprising an adapter 17, a rotary valve core 18, and a three-way connector 19. The rotary valve core 18 contains a nozzle with an orifice diameter of 0.1 mm. Liquid is atomized by being sprayed at high speed through the small orifice under high pressure; that is, the water pressure generated by the movement of the gas-liquid two-phase cylinder, combined with the small orifice structure of the nozzle, achieves the atomization function. Simultaneously, rotating the valve opening allows for adjustment of the water mist flow rate. The adapter 17 is used to connect to a water pipeline. Connecting the adapter 17 to the three-way connector 19 allows water to enter the adjustable pipeline humidifier through the adapter 17, and the water mist is sprayed at high speed through the rotary valve core 18 to the three-way connector 19, where it mixes with high-pressure air, thus humidifying the interior of the pneumatic system pipeline.

[0038] This invention also provides a method for simulating condensation and icing of components, wherein the method is conducted using the adjustable pipeline humidification experimental system for pneumatic systems as described above. The method mainly includes the following steps:

[0039] Step 1: Calculate the required pressure for the humidification circuit and the pressure for the pressurization circuit based on the humidity required for the experiment.

[0040] Step 2: Connect the tested component 12 to the adjustable pipeline humidification experimental system and check all gas and electrical connections.

[0041] Step 3: After the high-pressure air source is connected, adjust the rotary valve core of the first high-pressure air pressure reducing valve 5 and the adjustable pipeline humidifier 10 to the set pressure of the humidification branch, and read the pressure gauge reading of the humidification branch. Adjust the high-pressure air pressure reducing valve of the pressurization branch to the set pressure of the pressurization branch, and read the pressure gauge reading of the pressurization branch.

[0042] Step 4: Measure the pressure change along the flow path inside the tested component 12.

[0043] Step 5: Measure the weight gain of the tested component 12 to determine the mass of icing and condensation.

[0044] Step six: Read the reading of the first pressure gauge 4 to calculate the actual high-pressure air mass flow rate; read the reading of the displacement sensor to calculate the actual water mass flow rate, and verify the correctness of the theoretical calculation.

[0045] The present invention will now be described in further detail.

[0046] High-pressure humidified air is a mixture of high-pressure air and water. The humidity of high-pressure humidified air can be expressed by equation (1):

[0047] a = Q ml / (Q ml +Q mv (1)

[0048] In the formula, a is the humidity, and Q is the temperature. ml Q is the mass flow rate of water. mv It is the mass flow rate of gas.

[0049] The mass flow rate of the high-pressure gas can be expressed by equation (2):

[0050]

[0051] In the formula, C d κ is the gas flow coefficient, σ0 is the adiabatic index, P2 and P3 are the inlet and outlet pressures (corresponding to the pressures of the third and fourth pressure gauges), respectively.

[0052] The mass flow rate of water can be expressed by equation (3):

[0053]

[0054] In the formula, C q This is the liquid flow coefficient, A0 is the valve port cross-sectional area (corresponding to the opening of the adjustable pipeline humidifier), P1 and P2 are the inlet and outlet pressures respectively (corresponding to the pressures of the second and third pressure gauges), and ρ... l It is the density of the liquid.

[0055] Based on the initial pressure of the gas tank measured by the first pressure gauge and the pressure after venting, the mass flow rate of the high-pressure gas can be calculated, which can be expressed by equation (4):

[0056]

[0057] In the formula, ΔP is the pressure change of the high-pressure gas tank (corresponding to the first pressure gauge), z is the compressibility factor, R is the gas constant, T is the gas tank temperature, and V is the gas tank volume.

[0058] The mass flow rate of water can be calculated from the displacement of the gas-liquid two-phase cylinder measured by the displacement sensor, and can be expressed by equation (5):

[0059]

[0060] In the formula, Δl is the displacement of the push rod (corresponding to the displacement of the gas-liquid dual-purpose cylinder), t is time, and S is the cross-sectional area of ​​the rod cavity.

[0061] The method for simulating icing and condensation of pneumatic components using the system of the present invention is as follows:

[0062] First, based on the humidity required for the experiment, the required high-pressure air mass flow rate and the required water mass flow rate are calculated using equation (1). Then, the pressure to be set in the pressurization branch is calculated using equation (2), and the pressure to be set in the humidification branch is calculated using equation (3).

[0063] Next, connect the component under test to the adjustable pipeline humidification test system and check all gas and electrical connections.

[0064] Next, after the high-pressure air source is connected, adjust the high-pressure air pressure reducing valve of the humidification branch to the set pressure of the humidification circuit and the rotary valve core of the adjustable pipeline humidifier, and read the pressure gauge reading of the humidification circuit. Adjust the high-pressure air pressure reducing valve of the pressurization branch to the set pressure of the pressurization circuit, and read the pressure gauge reading of the pressurization branch.

[0065] Then, the pressure measurement subsystem measures the pressure change along the flow path inside the measured element.

[0066] Furthermore, the weight gain of the tested component is measured to determine the mass of icing and condensation.

[0067] Finally, the reading of the pressure gauge of the high-pressure gas tank was read, and the actual high-pressure air mass flow rate was calculated by equation (4); the reading of the displacement sensor was read, and the actual water mass flow rate was calculated by equation (5) to verify the correctness of the theoretical calculation.

[0068] This invention is applicable to a wide range of pressure pneumatic systems, enabling different humidity adjustments and simulating various harsh operating conditions of pneumatic systems. It helps verify the reliability of various pneumatic components, investigates the effects of icing and condensation on these components, and contributes to further optimization and improvement of their performance. The measurement method and apparatus are simple in structure, low in experimental cost, and highly efficient.

[0069] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An adjustable pipeline humidification experimental system for pneumatic systems, characterized in that: The experimental system includes an air compressor, a high-pressure air tank, a first high-pressure air pressure reducing valve, a second high-pressure air pressure reducing valve, a gas-liquid dual-purpose cylinder, an adjustable pipeline humidifier, and a pressure measurement subsystem. The outlet of the air compressor is connected to the inlet of the high-pressure gas tank. The outlet of the high-pressure gas tank is connected to the inlet of the first high-pressure air pressure reducing valve and the inlet of the second high-pressure air pressure reducing valve. The outlet of the first high-pressure air pressure reducing valve is connected to the air chamber of the gas-liquid dual-purpose cylinder. The liquid chamber of the gas-liquid dual-purpose cylinder is connected to the second port of the adjustable pipeline humidifier. The outlet of the second high-pressure air pressure reducing valve is connected to the first port of the adjustable pipeline humidifier. The third port of the adjustable pipeline humidifier is connected to the measured element. The pressure measurement subsystem is also connected to the measured element. The adjustable pipeline humidifier is used to mix high-pressure air, after its pressure has been adjusted by the second high-pressure air pressure reducing valve, with water from the gas-liquid dual-purpose cylinder to obtain high-pressure humid air. It adjusts the humidity of the high-pressure humid air by adjusting the opening of its own valve port. The pressure measurement subsystem is used to measure the pressure distribution along the internal flow channel of the measured element. The experimental system further includes a first pressure gauge, which is installed on the high-pressure gas tank and is used to measure the pressure inside the high-pressure gas tank; the experimental system also includes a second pressure gauge and a third pressure gauge, the second pressure gauge being installed on the pipeline between the first high-pressure air pressure reducing valve and the gas-liquid dual-purpose cylinder; the third pressure gauge being installed on the pipeline between the second high-pressure air pressure reducing valve and the adjustable pipeline humidifier; the second high-pressure air pressure reducing valve and the third pressure gauge form a pressurization branch; the first high-pressure air pressure reducing valve, the second pressure gauge, and the gas-liquid dual-purpose cylinder form a humidification branch; in the pressurization branch, high-pressure air from the high-pressure gas tank passes through the first... The second high-pressure air pressure reducing valve regulates the pressure. The third pressure gauge is used to measure the pressure of the high-pressure air after being regulated by the second high-pressure air pressure reducing valve, and delivers the regulated high-pressure air to the first port of the adjustable pipeline humidifier, and then into the adjustable pipeline humidifier. In the humidification branch, the first high-pressure air pressure reducing valve regulates the pressure of the high-pressure air from the high-pressure air tank. The second pressure gauge is used to measure the pressure of the high-pressure air after being regulated by the first high-pressure air pressure reducing valve. The regulated high-pressure air acts on the air chamber of the gas-liquid dual-purpose cylinder to push its water chamber, pressurizing the water to the second port of the adjustable pipeline humidifier, and then into the adjustable pipeline humidifier.

2. The adjustable pipeline humidification experimental system for pneumatic systems as described in claim 1, characterized in that: The experimental system also includes an electronic balance, which is used to measure the weight gain of the tested element after condensation and icing occur inside the tested element, and then indirectly obtain the degree of condensation and icing inside the tested element based on the obtained weight gain.

3. The adjustable pipeline humidification experimental system for pneumatic systems as described in claim 1, characterized in that: The experimental system also includes a displacement sensor connected to the piston rod of the gas-liquid dual-purpose cylinder, which is used to measure the displacement change of the gas-liquid dual-purpose cylinder.

4. The adjustable pipeline humidification experimental system for pneumatic systems as described in any one of claims 1-3, characterized in that: The experimental system also includes a fourth pressure gauge and a throttle valve, wherein the fourth pressure gauge is connected to the tested element and the throttle valve.

5. The adjustable pipeline humidification experimental system for pneumatic systems as described in any one of claims 1-3, characterized in that: The experimental system also includes a filter, which is connected to the air compressor and the high-pressure gas tank.

6. The adjustable pipeline humidification experimental system for pneumatic systems as described in any one of claims 1-3, characterized in that: The adjustable pipeline humidifier includes an adapter, a rotary valve core, and a three-way connector. The adapter is connected to the three-way connector, and the rotary valve core is disposed within the three-way connector and located within the adapter. A second port is formed on the adapter and is connected to one interface of the three-way connector through the rotary valve core. The humidity of the high-pressure humidified air is changed by adjusting the opening degree of the interface connecting the three-way connector and the adapter through the rotary valve core.

7. A method for simulating condensation and icing of components, characterized in that: The method described herein employs the adjustable pipeline humidification experimental system for pneumatic systems as described in any one of claims 1-6 to conduct condensation and icing simulation experiments on the components.

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