Corrugated pipe type quick response gust simulation device and method for wind tunnel test

Abstract

The invention discloses a corrugated pipe type quick response gust simulation device and method for a wind tunnel test. A wind tunnel test section and a wind tunnel stable section of the device are connected in series; the gust nozzle is arranged between the wind tunnel test section and the wind tunnel stable section, the large-diameter port of the gust nozzle faces the wind tunnel stable section, and the small-diameter port of the gust nozzle faces the wind tunnel test section; the linear motor is fixedly arranged outside the wind tunnel test section. A linear motor stator slide rail is parallel to the central axis of the wind tunnel test section. The middle of the force transmission frame is fixedly connected to the linear motor rotor sliding table, one end of the force transmission frame is connected with the air inlet side of the wind tunnel stable section through the first corrugated pipe type pressure regulating mechanism, and the other end of the force transmission frame is connected with the air outlet side of the wind tunnel test section through the second corrugated pipe type pressure regulating mechanism. The linear motor is introduced to serve as gust simulation driving equipment, a corrugated pipe type pressure regulating mechanism is designed in a matched mode, the gust simulation response speed is increased, millisecond-level step gust in the nature can be reproduced, the dynamic fidelity of test data is improved, and aerodynamic force transient characteristics under the real working condition are accurately reflected.

Description

Technical Field

[0001] The present invention belongs to the technical field of wind tunnel testing, and in particular relates to a bellows-type rapid response gust simulation device and method for wind tunnel testing. Background Art

[0002] As an indispensable core equipment for airflow simulation in aerospace, automotive engineering, architectural environment and other fields, the core function of wind tunnel is to provide key test data for aircraft aerodynamic design, automobile aerodynamic optimization, building wind load testing, etc. by precisely controlling airflow characteristics such as speed, pressure, and turbulence.

[0003] During wind tunnel testing, gust simulation is one of the important scenarios. It is mainly used to simulate the dynamic effects of sudden airflow changes such as atmospheric turbulence and strong wind impacts in nature on target objects. It is of key significance for aircraft wind resistance stability testing and automobile high-speed driving transient response analysis.

[0004] However, traditional wind tunnels mainly rely on fan motor speed regulation to achieve sudden changes in airflow velocity, thereby realizing gust simulation. However, this gust simulation method has a slow transition time from calm wind to target wind speed, resulting in a problem of excessively long adjustment time. In addition, it is impossible to reproduce the millisecond-level step gusts in nature. Therefore, there is a problem of insufficient dynamic fidelity of the test data, and it is impossible to accurately reflect the transient characteristics of aerodynamic forces under real working conditions.

[0005] In addition, since gust simulation uses a fan-driven airflow regulation method, it is necessary to achieve speed changes by changing the airflow flow rate of the entire wind tunnel circuit. However, this process is limited by the airflow inertia in the pipeline, resulting in a significant delay in speed changes, making it difficult to meet the needs of high-precision dynamic tests. Summary of the Invention

[0006] In response to the problems existing in the prior art, the present invention provides a bellows-type fast-response gust simulation device and method for wind tunnel testing. It abandons the use of traditional fan motors and introduces a linear motor as a driving device for gust simulation for the first time. A bellows-type voltage regulating mechanism is designed to greatly improve the response speed of gust simulation, and can reproduce millisecond-level step gusts in nature, effectively improving the dynamic fidelity of test data, thereby accurately reflecting the transient characteristics of aerodynamic forces under real working conditions.

[0007] In order to achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a bellows-type fast-response gust simulation device for wind tunnel testing, comprising a wind tunnel test section, a wind tunnel stabilization section, a gust nozzle, a first bellows-type pressure regulating mechanism, a second bellows-type pressure regulating mechanism, a linear motor and a force transmission frame; the wind tunnel test section and the wind tunnel stabilization section are arranged in series; the gust nozzle is arranged between the wind tunnel test section and the wind tunnel stabilization section, the large-diameter port of the gust nozzle faces the wind tunnel stabilization section, and the small-diameter port of the gust nozzle faces the wind tunnel test section; the linear motor is fixedly arranged outside the wind tunnel test section, and the stator slide rail of the linear motor is distributed parallel to the central axis of the wind tunnel test section; the middle part of the force transmission frame is fixedly connected to the mover slide of the linear motor, one end of the force transmission frame is connected to the air inlet side of the wind tunnel stabilization section through the first bellows-type pressure regulating mechanism, and the other end of the force transmission frame is connected to the air outlet side of the wind tunnel test section through the second bellows-type pressure regulating mechanism.

[0008] The first bellows-type pressure regulating mechanism includes a first bellows, a first support ring plate, a first push-pull plate and a first guide slide group; the first support ring plate is coaxially fixedly mounted on the outside of the wind tunnel stabilization section; the first guide slide group is horizontally fixedly mounted on the first support ring plate; a first guide slide group through-hole is provided on the first push-pull plate, and the first push-pull plate is installed on the first guide slide group through the first guide slide group through-hole, and the first push-pull plate has horizontal sliding freedom relative to the first guide slide group; one end of the first bellows is sealedly connected to the first support ring plate, and the other end of the first bellows is sealedly connected to the first push-pull plate; the first push-pull plate is fixedly connected to one end of the force transmission frame.

[0009] A first vent hole is provided on the first push-pull plate, and a first valve is installed at the first vent hole.

[0010] The second bellows-type pressure regulating mechanism includes a second bellows, a second support ring plate, a second push-pull plate and a second guide slide rod group; the second support ring plate is coaxially fixedly mounted on the outside of the wind tunnel stabilization section; the second guide slide rod group is horizontally fixedly mounted on the second support ring plate; a second guide slide rod group through-hole is provided on the second push-pull plate, and the second push-pull plate is installed on the second guide slide rod group through the second guide slide rod group through-hole, and the second push-pull plate has horizontal sliding freedom relative to the second guide slide rod group; one end of the second bellows is sealed connected to the second support ring plate, and the other end of the second bellows is sealed connected to the second push-pull plate; the second push-pull plate is fixedly connected to the other end of the force transmission frame.

[0011] A second vent hole is provided on the second push-pull plate, and a second valve is installed at the second vent hole.

[0012] A first pressure sensor is installed on the wind tunnel stabilizing section.

[0013] A second pressure sensor is installed on the wind tunnel test section.

[0014] A laser speed measuring probe is provided on the first supporting ring plate, and the laser speed measuring probe is directly opposite to the first push-pull plate.

[0015] A bellows-type rapid response gust simulation method for wind tunnel testing, using the bellows-type rapid response gust simulation device for wind tunnel testing, comprises the following steps when using a low-speed gust mode:

[0016] Step 1: Adjust the linear motor's movable slide to the left limit position, so that the first bellows is in the maximum extension state and the second bellows is in the maximum compression state;

[0017] Step 2: Adjust the first valve to the closed state and the second valve to the open state;

[0018] Step 3: Install the wind speed sensor inside the wind tunnel test section;

[0019] Step 4: Start the linear motor to move the movable slide of the linear motor from the left limit to the right limit, and drive the first push-pull plate and the second push-pull plate to move synchronously to the right through the force transmission frame, so that the first bellows becomes the maximum compression state and the second bellows becomes the maximum extension state. Under the action of compression, the air in the first bellows is sprayed into the wind tunnel test section through the gust nozzle and forms a gust, and the formed gust is connected to the atmosphere through the opened second valve. During the gust formation process, the movement speed of the first push-pull plate is recorded by the laser speed measuring probe, the pressure in the stable section of the wind tunnel is measured by the first pressure sensor, the pressure in the wind tunnel test section is measured by the second pressure sensor, and the gust wind speed in the wind tunnel test section is measured by the wind speed sensor;

[0020] Step 5: input the data measured by the laser velocity probe, the first pressure sensor, the second pressure sensor and the wind speed sensor into the database as a group;

[0021] Step 6: Repeat steps 1 to 5, except that the output power of the linear motor is adjusted, and the moving speed of the linear motor mover slide is adjusted to achieve synchronous adjustment of the moving speed of the first push-pull plate, and the moving speed is adjusted in a step-by-step manner until the output power of the linear motor reaches the maximum rated value;

[0022] Step 7: Aggregate all data into a database. Each set of data corresponds to the output power value of a linear motor. Each set of data includes the movement speed of the first push-pull plate, the pressure in the wind tunnel stable section, the pressure in the wind tunnel test section, and the gust wind speed in the wind tunnel test section.

[0023] Step 8: Install the test object into the wind tunnel test section;

[0024] Step 9: Repeat steps 1 and 2;

[0025] Step 10: Set the gust wind speed, determine the output power value of the linear motor that matches it according to the set value of the gust wind speed, and then start the linear motor with the matching output power until the gust simulation is completed; at the same time, during the gust simulation process, the real-time measurement data of the laser speed measuring probe, the first pressure sensor and the second pressure sensor are compared with the matching data stored in the database to achieve indirect monitoring of the gust wind speed.

[0026] A bellows-type rapid response gust simulation method for wind tunnel testing, using the bellows-type rapid response gust simulation device for wind tunnel testing, comprises the following steps when using a high-speed gust mode:

[0027] Step 1: Adjust the linear motor's movable slide to the left limit position, so that the first bellows is in the maximum extension state and the second bellows is in the maximum compression state;

[0028] Step 2: Adjust the first valve and the second valve to the closed state;

[0029] Step 3: Install the wind speed sensor inside the wind tunnel test section;

[0030] Step 4: Start the linear motor to move the movable slide of the linear motor from the left limit to the right limit, and drive the first push-pull plate and the second push-pull plate to move synchronously to the right through the force transmission frame, so that the first bellows becomes the maximum compression state and the second bellows becomes the maximum extension state. The air in the first bellows is compressed and sprayed into the wind tunnel test section through the gust nozzle to form a gust. The air in the second bellows is decompressed under the action of sealing expansion, thereby increasing the pressure difference on both sides of the gust nozzle during the gust formation process to increase the gust wind speed. During the gust formation process, the moving speed of the first push-pull plate is recorded by the laser speed measuring probe, the pressure in the stable section of the wind tunnel is measured by the first pressure sensor, the pressure in the wind tunnel test section is measured by the second pressure sensor, and the gust wind speed in the wind tunnel test section is measured by the wind speed sensor.

[0031] Step 5: input the data measured by the laser velocity probe, the first pressure sensor, the second pressure sensor and the wind speed sensor into the database as a group;

[0032] Step 6: Repeat steps 1 to 5, except that the output power of the linear motor is adjusted, and the moving speed of the linear motor mover slide is adjusted to achieve synchronous adjustment of the moving speed of the first push-pull plate, and the moving speed is adjusted in a step-by-step manner until the output power of the linear motor reaches the maximum rated value;

[0033] Step 7: Aggregate all data into a database. Each set of data corresponds to the output power value of a linear motor. Each set of data includes the movement speed of the first push-pull plate, the pressure in the wind tunnel stable section, the pressure in the wind tunnel test section, and the gust wind speed in the wind tunnel test section.

[0034] Step 8: Install the test object into the wind tunnel test section;

[0035] Step 9: Repeat steps 1 and 2;

[0036] Step 10: Set the gust wind speed, determine the output power value of the linear motor that matches it according to the set value of the gust wind speed, and then start the linear motor with the matching output power until the gust simulation is completed; at the same time, during the gust simulation process, the real-time measurement data of the laser speed measuring probe, the first pressure sensor and the second pressure sensor are compared with the matching data stored in the database to achieve indirect monitoring of the gust wind speed.

[0037] Beneficial effects of the present invention:

[0038] The bellows-type fast-response gust simulation device and method for wind tunnel testing of the present invention abandons the use of traditional fan motors and introduces a linear motor as a driving device for gust simulation for the first time. A bellows-type voltage regulating mechanism is designed to greatly improve the response speed of gust simulation, and can reproduce millisecond-level step gusts in nature, effectively improving the dynamic fidelity of test data, thereby accurately reflecting the transient characteristics of aerodynamic forces under real working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 Schematic diagram of the structure of a bellows-type rapid response gust simulation device for wind tunnel testing (before gust simulation) according to the present invention;

[0040] Figure 2 Schematic diagram of the structure of a bellows-type rapid response gust simulation device for wind tunnel testing (after gust simulation) according to the present invention;

[0041] In the figure, 1 is the wind tunnel test section, 2 is the wind tunnel stabilization section, 3 is the gust nozzle, 4 is the linear motor, 5 is the force transmission frame, 6 is the first bellows, 7 is the first support ring plate, 8 is the first push-pull plate, 9 is the first guide slide rod group, 10 is the first valve, 11 is the second bellows, 12 is the second support ring plate, 13 is the second push-pull plate, 14 is the second guide slide rod group, 15 is the second valve, 16 is the first pressure sensor, 17 is the second pressure sensor, and 18 is the laser speed measuring probe. DETAILED DESCRIPTION

[0042] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] like Figure 1 、 2 As shown, a bellows-type fast-response gust simulation device for wind tunnel testing comprises a wind tunnel testing section 1, a wind tunnel stabilizing section 2, a gust nozzle 3, a first bellows-type pressure regulating mechanism, a second bellows-type pressure regulating mechanism, a linear motor 4 and a force transmission frame 5; the wind tunnel testing section 1 and the wind tunnel stabilizing section 2 are arranged in series; the gust nozzle 3 is arranged between the wind tunnel testing section 1 and the wind tunnel stabilizing section 2, the large-diameter end of the gust nozzle 3 faces the wind tunnel stabilizing section 2, and the small-diameter end of the gust nozzle 3 faces the wind tunnel testing section 1; the linear motor 4 is fixedly arranged outside the wind tunnel testing section 1, and the stator slide rail of the linear motor 4 is distributed parallel to the central axis of the wind tunnel testing section 1; the middle part of the force transmission frame 5 is fixedly connected to the mover slide of the linear motor 4, one end of the force transmission frame 5 is connected to the air inlet side of the wind tunnel stabilizing section 2 through the first bellows-type pressure regulating mechanism, and the other end of the force transmission frame 5 is connected to the air outlet side of the wind tunnel testing section 1 through the second bellows-type pressure regulating mechanism.

[0044] The first bellows type pressure regulating mechanism includes a first bellows 6, a first support ring plate 7, a first push-pull plate 8 and a first guide slide rod group 9; the first support ring plate 7 is coaxially fixedly mounted on the outside of the wind tunnel stabilization section 2; the first guide slide rod group 9 is horizontally fixed on the first support ring plate 7; a first guide slide rod group through-hole is provided on the first push-pull plate 8, and the first push-pull plate 8 is installed on the first guide slide rod group 9 through the first guide slide rod group through-hole, and the first push-pull plate 8 has horizontal sliding freedom relative to the first guide slide rod group 9; one end of the first bellows 6 is sealedly connected to the first support ring plate 7, and the other end of the first bellows 6 is sealedly connected to the first push-pull plate 8; the first push-pull plate 8 is fixedly connected to one end of the force transmission frame 5.

[0045] A first vent hole is provided on the first push-pull plate 8 , and a first valve 10 is installed at the first vent hole.

[0046] The second bellows type pressure regulating mechanism includes a second bellows 11, a second support ring plate 12, a second push-pull plate 13 and a second guide slide group 14; the second support ring plate 12 is coaxially fixedly mounted on the outside of the wind tunnel stabilization section 2; the second guide slide group 14 is horizontally fixedly mounted on the second support ring plate 12; a second guide slide group through-hole is provided on the second push-pull plate 13, and the second push-pull plate 13 is mounted on the second guide slide group 14 through the second guide slide group through-hole, and the second push-pull plate 13 has horizontal sliding freedom relative to the second guide slide group 14; one end of the second bellows 11 is sealedly connected to the second support ring plate 12, and the other end of the second bellows 11 is sealedly connected to the second push-pull plate 13; the second push-pull plate 13 is fixedly connected to the other end of the force transmission frame 5.

[0047] A second vent hole is provided on the second push-pull plate 13 , and a second valve 15 is installed at the second vent hole.

[0048] A first pressure sensor 16 is installed on the wind tunnel stabilizing section 2 .

[0049] A second pressure sensor 17 is installed on the wind tunnel test section 1 .

[0050] A laser speed measuring probe 18 is provided on the first supporting ring plate 7 , and the laser speed measuring probe 18 is directly opposite to the first push-pull plate 8 .

[0051] A bellows-type rapid response gust simulation method for wind tunnel testing, using the bellows-type rapid response gust simulation device for wind tunnel testing, comprises the following steps when using a low-speed gust mode:

[0052] Step 1: Adjust the movable slide of the linear motor 4 to the left limit position, so that the first bellows 6 is in the maximum extension state and the second bellows 11 is in the maximum compression state;

[0053] Step 2: Adjust the first valve 10 to a closed state and the second valve 15 to an open state;

[0054] Step 3: Install a wind speed sensor inside the wind tunnel test section 1;

[0055] Step 4: Start the linear motor 4 to move the movable slide of the linear motor 4 from the left limit to the right limit, and drive the first push-pull plate 8 and the second push-pull plate 13 to move synchronously to the right through the force transmission frame 5, so that the first bellows 6 becomes the maximum compression state, and the second bellows 11 becomes the maximum extension state. The air in the first bellows 6 is sprayed into the wind tunnel test section 1 through the gust nozzle 3 under the action of compression and forms a gust of wind, and the formed gust of wind is connected to the atmosphere through the opened second valve 15. During the gust formation process, the moving speed of the first push-pull plate 8 is recorded by the laser speed measuring probe 18, the pressure in the wind tunnel stable section 2 is measured by the first pressure sensor 16, the pressure in the wind tunnel test section 1 is measured by the second pressure sensor 17, and the gust wind speed in the wind tunnel test section 1 is measured by the wind speed sensor;

[0056] Step 5: Input the data measured by the laser velocity probe 18, the first pressure sensor 16, the second pressure sensor 17 and the wind speed sensor into the database as a group;

[0057] Step 6: Repeat steps 1 to 5, except that the output power of the linear motor 4 is adjusted, and the moving speed of the movable slide of the linear motor 4 is adjusted to achieve synchronous adjustment of the moving speed of the first push-pull plate 8, and the adjustment rule of the moving speed is to increase step by step until the output power of the linear motor 4 reaches the maximum rated value;

[0058] Step 7: All data are aggregated into a database. Each set of data corresponds to the output power value of the linear motor 4. Each set of data includes the moving speed of the first push-pull plate 8, the pressure in the wind tunnel stable section 2, the pressure in the wind tunnel test section 1, and the gust wind speed in the wind tunnel test section 1.

[0059] Step 8: Install the test object into the wind tunnel test section 1;

[0060] Step 9: Repeat steps 1 and 2;

[0061] Step 10: Set the gust wind speed, determine the output power value of the linear motor 4 that matches it according to the set value of the gust wind speed, and then start the linear motor 4 with the matching output power until the gust simulation is completed; at the same time, during the gust simulation process, the real-time measurement data of the laser speed measuring probe 18, the first pressure sensor 16 and the second pressure sensor 17 are compared with the matching data stored in the database to achieve indirect monitoring of the gust wind speed.

[0062] A bellows-type rapid response gust simulation method for wind tunnel testing, using the bellows-type rapid response gust simulation device for wind tunnel testing, comprises the following steps when using a high-speed gust mode:

[0063] Step 1: Adjust the movable slide of the linear motor 4 to the left limit position, so that the first bellows 6 is in the maximum extension state and the second bellows 11 is in the maximum compression state;

[0064] Step 2: Adjust the first valve 10 and the second valve 15 to the closed state;

[0065] Step 3: Install a wind speed sensor inside the wind tunnel test section 1;

[0066] Step 4: Start the linear motor 4 to move the movable slide of the linear motor 4 from the left limit to the right limit, and drive the first push-pull plate 8 and the second push-pull plate 13 to move synchronously to the right through the force transmission frame 5, so that the first bellows 6 becomes the maximum compression state, and the second bellows 11 becomes the maximum extension state. The air in the first bellows 6 is sprayed into the wind tunnel test section 1 through the gust nozzle 3 under the action of compression and forms a gust. The air in the second bellows 11 is decompressed under the action of sealing expansion, thereby increasing the pressure difference on both sides of the gust nozzle 3 during the gust formation process, so as to increase the gust wind speed; during the gust formation process, the moving speed of the first push-pull plate 8 is recorded by the laser speed measuring probe 18, the pressure in the wind tunnel stable section 2 is measured by the first pressure sensor 16, the pressure in the wind tunnel test section 1 is measured by the second pressure sensor 17, and the gust wind speed in the wind tunnel test section 1 is measured by the wind speed sensor;

[0067] Step 5: Input the data measured by the laser velocity probe 18, the first pressure sensor 16, the second pressure sensor 17 and the wind speed sensor into the database as a group;

[0068] Step 6: Repeat steps 1 to 5, except that the output power of the linear motor 4 is adjusted, and the moving speed of the movable slide of the linear motor 4 is adjusted to achieve synchronous adjustment of the moving speed of the first push-pull plate 8, and the adjustment rule of the moving speed is to increase step by step until the output power of the linear motor 4 reaches the maximum rated value;

[0069] Step 7: All data are aggregated into a database. Each set of data corresponds to the output power value of the linear motor 4. Each set of data includes the moving speed of the first push-pull plate 8, the pressure in the wind tunnel stable section 2, the pressure in the wind tunnel test section 1, and the gust wind speed in the wind tunnel test section 1.

[0070] Step 8: Install the test object into the wind tunnel test section 1;

[0071] Step 9: Repeat steps 1 and 2;

[0072] Step 10: Set the gust wind speed, determine the output power value of the linear motor 4 that matches it according to the set value of the gust wind speed, and then start the linear motor 4 with the matching output power until the gust simulation is completed; at the same time, during the gust simulation process, the real-time measurement data of the laser speed measuring probe 18, the first pressure sensor 16 and the second pressure sensor 17 are compared with the matching data stored in the database to achieve indirect monitoring of the gust wind speed.

[0073] The solutions in the embodiments are not intended to limit the scope of protection of the present invention. All equivalent implementations or modifications that do not depart from the scope of protection of the present invention are included in the scope of protection of the present invention.

Claims

1. A bellows-type rapid-response gust simulator for wind tunnel testing, characterized by: It includes a wind tunnel test section, a wind tunnel stabilization section, a gust nozzle, a first bellows-type pressure regulating mechanism, a second bellows-type pressure regulating mechanism, a linear motor and a force transmission frame; the wind tunnel test section and the wind tunnel stabilization section are arranged in series; the gust nozzle is arranged between the wind tunnel test section and the wind tunnel stabilization section, the large-diameter port of the gust nozzle faces the wind tunnel stabilization section, and the small-diameter port of the gust nozzle faces the wind tunnel test section; the linear motor is fixedly arranged outside the wind tunnel test section, and the stator slide rail of the linear motor is distributed parallel to the central axis of the wind tunnel test section; the middle part of the force transmission frame is fixedly connected to the mover slide of the linear motor, one end of the force transmission frame is connected to the air inlet side of the wind tunnel stabilization section through the first bellows-type pressure regulating mechanism, and the other end of the force transmission frame is connected to the air outlet side of the wind tunnel test section through the second bellows-type pressure regulating mechanism.

2. The bellows-type rapid response gust simulator for wind tunnel testing according to claim 1, characterized in that: The first bellows-type pressure regulating mechanism includes a first bellows, a first support ring plate, a first push-pull plate and a first guide slide group; the first support ring plate is coaxially fixedly mounted on the outside of the wind tunnel stabilization section; the first guide slide group is horizontally fixedly mounted on the first support ring plate; a first guide slide group through-hole is provided on the first push-pull plate, and the first push-pull plate is installed on the first guide slide group through the first guide slide group through-hole, and the first push-pull plate has horizontal sliding freedom relative to the first guide slide group; one end of the first bellows is sealedly connected to the first support ring plate, and the other end of the first bellows is sealedly connected to the first push-pull plate; the first push-pull plate is fixedly connected to one end of the force transmission frame.

3. The bellows-type rapid response gust simulator for wind tunnel testing according to claim 2, characterized in that: A first vent hole is provided on the first push-pull plate, and a first valve is installed at the first vent hole.

4. The bellows-type rapid response gust simulator for wind tunnel testing according to claim 1, characterized in that: The second bellows-type pressure regulating mechanism includes a second bellows, a second support ring plate, a second push-pull plate and a second guide slide rod group; the second support ring plate is coaxially fixedly mounted on the outside of the wind tunnel stabilization section; the second guide slide rod group is horizontally fixedly mounted on the second support ring plate; a second guide slide rod group through-hole is provided on the second push-pull plate, and the second push-pull plate is installed on the second guide slide rod group through the second guide slide rod group through-hole, and the second push-pull plate has horizontal sliding freedom relative to the second guide slide rod group; one end of the second bellows is sealed connected to the second support ring plate, and the other end of the second bellows is sealed connected to the second push-pull plate; the second push-pull plate is fixedly connected to the other end of the force transmission frame.

5. The bellows-type rapid response gust simulator for wind tunnel testing according to claim 2, characterized in that: A second vent hole is provided on the second push-pull plate, and a second valve is installed at the second vent hole.

6. The bellows-type rapid response gust simulator for wind tunnel testing according to claim 1, characterized in that: A first pressure sensor is installed on the wind tunnel stabilizing section.

7. The bellows-type rapid response gust simulator for wind tunnel testing according to claim 1, characterized in that: A second pressure sensor is installed on the wind tunnel test section.

8. The bellows-type rapid response gust simulator for wind tunnel testing according to claim 2, characterized in that: A laser speed measuring probe is provided on the first supporting ring plate, and the laser speed measuring probe is directly opposite to the first push-pull plate.

9. A bellows-type rapid response gust simulation method for wind tunnel testing, the bellows-type rapid response gust simulation device for wind tunnel testing according to claim 1, characterized in that: When using the low-speed gust mode, the following steps are included: Step 1: Adjust the linear motor's movable slide to the left limit position, so that the first bellows is in the maximum extension state and the second bellows is in the maximum compression state; Step 2: Adjust the first valve to the closed state and the second valve to the open state; Step 3: Install the wind speed sensor inside the wind tunnel test section; Step 4: Start the linear motor to move the movable slide of the linear motor from the left limit to the right limit, and drive the first push-pull plate and the second push-pull plate to move synchronously to the right through the force transmission frame, so that the first bellows becomes the maximum compression state and the second bellows becomes the maximum extension state. Under the action of compression, the air in the first bellows is sprayed into the wind tunnel test section through the gust nozzle and forms a gust, and the formed gust is connected to the atmosphere through the opened second valve. During the gust formation process, the movement speed of the first push-pull plate is recorded by the laser speed measuring probe, the pressure in the stable section of the wind tunnel is measured by the first pressure sensor, the pressure in the wind tunnel test section is measured by the second pressure sensor, and the gust wind speed in the wind tunnel test section is measured by the wind speed sensor; Step 5: input the data measured by the laser velocity probe, the first pressure sensor, the second pressure sensor and the wind speed sensor into the database as a group; Step 6: Repeat steps 1 to 5, except that the output power of the linear motor is adjusted, and the moving speed of the linear motor mover slide is adjusted to achieve synchronous adjustment of the moving speed of the first push-pull plate, and the moving speed is adjusted in a step-by-step manner until the output power of the linear motor reaches the maximum rated value; Step 7: Aggregate all data into a database. Each set of data corresponds to the output power value of a linear motor. Each set of data includes the movement speed of the first push-pull plate, the pressure in the wind tunnel stable section, the pressure in the wind tunnel test section, and the gust wind speed in the wind tunnel test section. Step 8: Install the test object into the wind tunnel test section; Step 9: Repeat steps 1 and 2; Step 10: Set the gust wind speed, determine the output power value of the linear motor that matches it according to the set value of the gust wind speed, and then start the linear motor with the matching output power until the gust simulation is completed; at the same time, during the gust simulation process, the real-time measurement data of the laser speed measuring probe, the first pressure sensor and the second pressure sensor are compared with the matching data stored in the database to achieve indirect monitoring of the gust wind speed.

10. The bellows-type rapid response gust simulator for wind tunnel testing according to claim 1, characterized in that: When using the high-speed gust mode, the following steps are included: Step 1: Adjust the linear motor's movable slide to the left limit position, so that the first bellows is in the maximum extension state and the second bellows is in the maximum compression state; Step 2: Adjust the first valve and the second valve to the closed state; Step 3: Install the wind speed sensor inside the wind tunnel test section; Step 4: Start the linear motor to move the movable slide of the linear motor from the left limit to the right limit, and drive the first push-pull plate and the second push-pull plate to move synchronously to the right through the force transmission frame, so that the first bellows becomes the maximum compression state, and the second bellows becomes the maximum extension state. The air in the first bellows is compressed and sprayed into the wind tunnel test section through the gust nozzle to form a gust. The air in the second bellows is decompressed under the action of sealing expansion, thereby increasing the pressure difference on both sides of the gust nozzle during the gust formation process, so as to increase the gust wind speed; during the gust formation process, the moving speed of the first push-pull plate is recorded by the laser speed measuring probe, the pressure in the stable section of the wind tunnel is measured by the first pressure sensor, the pressure in the wind tunnel test section is measured by the second pressure sensor, and the gust wind speed in the wind tunnel test section is measured by the wind speed sensor; Step 5: input the data measured by the laser velocity probe, the first pressure sensor, the second pressure sensor and the wind speed sensor into the database as a group; Step 6: Repeat steps 1 to 5, except that the output power of the linear motor is adjusted, and the moving speed of the linear motor mover slide is adjusted to achieve synchronous adjustment of the moving speed of the first push-pull plate, and the moving speed is adjusted in a step-by-step manner until the output power of the linear motor reaches the maximum rated value; Step 7: Aggregate all data into a database. Each set of data corresponds to the output power value of a linear motor. Each set of data includes the movement speed of the first push-pull plate, the pressure in the wind tunnel stable section, the pressure in the wind tunnel test section, and the gust wind speed in the wind tunnel test section. Step 8: Install the test object into the wind tunnel test section; Step 9: Repeat steps 1 and 2; Step 10: Set the gust wind speed, determine the output power value of the linear motor that matches it according to the set value of the gust wind speed, and then start the linear motor with the matching output power until the gust simulation is completed; at the same time, during the gust simulation process, the real-time measurement data of the laser speed measuring probe, the first pressure sensor and the second pressure sensor are compared with the matching data stored in the database to achieve indirect monitoring of the gust wind speed.

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