A valve ball type pneumatic valve pressure stabilizing device and experimental method

Abstract

The present invention discloses a ball-type pneumatic valve pressure stabilization device and experimental method in the field of pressure stabilization experimental technology. The ball-type pneumatic valve pressure stabilization device includes a hydraulic controller, a hydraulic actuator, a compression plate, a compression spring, a ball cap, a valve ball, a nozzle, a mounting bracket, a high-pressure chamber, a pressure sensor, and a pipeline interface. Pressure sensors and pipeline interfaces are provided on both sides of the high-pressure chamber. A nozzle and a mounting bracket are provided on the top of the high-pressure chamber. A hydraulic actuator is provided on the top of the mounting bracket, and the hydraulic actuator is electrically connected to the hydraulic controller. A compression plate and a compression spring are installed in sequence below the hydraulic actuator. The bottom of the compression spring is sleeved on the top of the ball cap. The valve ball is installed between the ball cap and the nozzle. The ball-type pneumatic valve pressure stabilization device and experimental method have a simple structure, are easy to process and install, and have low maintenance costs.

Description

Technical Field

[0001] The present invention relates to the technical field of pressure stabilization experiments, and in particular to a valve ball type pneumatic valve pressure stabilization device and an experimental method. Background Art

[0002] With the continuous advancement of aerospace science and technology, the demand for high-performance, high-maneuverability engines has emerged. However, some solid rocket engines have experienced unstable combustion, typically manifested as pressure drift, pulse triggering, and limit cycle oscillations. High-energy solid propellants within engines exhibit significant variations in combustion characteristics under different operating pressures, such as flame height, flame shape, burning surface recession rate, and heat release rate. These characteristics, in turn, further affect engine stability. Currently, solid propellant combustion experiments are primarily conducted at a specific operating pressure. However, existing experimental setups still suffer from the problem of internal pressure increasing with the release of gases from solid propellant combustion, making it difficult to accurately and efficiently dynamically adjust the release of overpressure gases. This causes a discrepancy between the internal ambient pressure and the preset target pressure, resulting in a mismatch between the obtained solid propellant combustion characteristics and the expected value. Due to this mismatch, despite combustion stability tests conducted at specific operating pressures for some solid propellants, some rocket engine experiments still exhibit varying degrees of unstable combustion, resulting in discrepancies between experimental and practical applications. There is no relevant solution to the technical problem of precise control of ambient pressure in solid propellant constant pressure experiments; therefore, there is an urgent need to find an effective solution to the above problem. Summary of the Invention

[0003] In order to solve the above problems, the purpose of the present invention is to provide a valve ball type pneumatic valve pressure stabilizing device and experimental method to solve the technical problem of low precision in controlling the ambient pressure of solid propellant combustion characteristics test under existing pressure stabilization conditions. The device has a simple structure, is easy to process and install, and has low maintenance cost. It can be customized according to the requirements of the test task, solving the problem of accurately controlling the ambient pressure in traditional pressure stabilization experiments.

[0004] In order to achieve the above object, the technical solution of the present invention is as follows:

[0005] The present invention provides a valve ball type pneumatic valve pressure stabilizing device, comprising a hydraulic controller, a hydraulic actuator, a compression plate, a compression spring, a valve ball cap, a valve ball, a nozzle, a mounting bracket, a high-pressure chamber, a pressure sensor and a pipeline interface; the pressure sensor and the pipeline interface are provided on both sides of the high-pressure chamber, the nozzle and the mounting bracket arranged outside the nozzle are provided on the top of the high-pressure chamber, the hydraulic actuator is provided on the top of the mounting bracket, and the hydraulic actuator is electrically connected to the hydraulic controller; the compression plate and the compression spring are installed in sequence below the hydraulic actuator, and the bottom of the compression spring is sleeved on the top of the valve ball cap; the valve ball is installed between the valve ball cap and the nozzle.

[0006] Furthermore, the high-pressure chamber is a hollow cylinder, including a high-pressure chamber main chamber and a high-pressure chamber top base arranged at the center position of the top of the high-pressure chamber main chamber; the pressure sensor and the pipeline interface are respectively provided on both side walls of the high-pressure chamber main chamber, and the high-pressure chamber top base is a hollow boss shape, which is installed in conjunction with the nozzle.

[0007] Furthermore, the nozzle body is a classic Laval nozzle configuration, including a T-shaped nozzle base, which is installed in cooperation with the top base of the high-pressure chamber; the internal configuration of the nozzle includes a hemispherical nozzle expansion section, a cylindrical nozzle throat and a conical nozzle convergent section, and the nozzle convergent section is installed in cooperation with the valve ball.

[0008] Furthermore, the shape of the valve ball cap is an inverted T-shape, including a valve ball cap ball top, a valve ball cap base and a valve ball cap valve stem arranged on the upper part of the valve ball cap base; the compression spring is sleeved on the upper part of the valve ball cap valve stem, the valve ball cap ball top is installed in cooperation with the valve ball, and the diameter of the valve ball cap base is the same as the outer diameter of the compression plate.

[0009] Furthermore, the hydraulic actuator includes a hydraulic actuator body, a hydraulic shaft arranged below the hydraulic actuator body, and a circuit arranged above the hydraulic actuator body; the hydraulic actuator body is fixedly mounted on the mounting frame, the hydraulic shaft is installed in cooperation with the clamping plate, and the hydraulic actuator is connected to the hydraulic controller through the circuit.

[0010] Furthermore, the mounting frame is a hollow truss structure, including a mounting frame platform at the top, a plurality of mounting frame legs arranged at the bottom of the mounting frame platform, a plurality of evenly processed mounting frame scale lines arranged on the mounting frame legs, a plurality of periodically evenly distributed mounting frame exhaust grooves, a mounting frame base at the bottom and a mounting frame base groove arranged inside the mounting frame base; the mounting frame base groove is a stepped concave cavity configuration, which is respectively installed in conjunction with the valve ball cap and the top base of the high-pressure chamber, the mounting frame platform is installed in conjunction with the hydraulic actuator body, and the mounting frame is equipped with the clamping plate, the clamping spring, the valve ball cap, the valve ball and the nozzle.

[0011] Furthermore, the compression plate is a thin cylindrical body, the material of the compression plate is 45 steel, and the bottom of the compression plate is installed in cooperation with the compression spring.

[0012] The present invention also provides a ball-type pneumatic valve pressure stabilization test method, comprising the following steps:

[0013] S1. Preparation for the pressure stabilization experiment of ball-type pneumatic valve;

[0014] S2. Experimental process of the pressure stabilization experiment of the ball-type pneumatic valve.

[0015] Furthermore, the S1 includes the following steps:

[0016] S11. Design the compression plate, compression spring, valve cap, valve ball, nozzle, mounting bracket, and high-pressure chamber based on the target experimental pressure range. Select the appropriate range of pressure sensor, hydraulic actuator, and hydraulic controller.

[0017] S12. Assemble the components in S11 according to the valve ball type pneumatic valve pressure stabilizing device to form a valve ball type pneumatic valve pressure stabilizing device;

[0018] S13. Check the rationality of the assembly of the various components of the valve ball pneumatic valve pressure stabilizing device, the fit and airtightness between the valve ball, valve ball cap, and nozzle, and the reliability of the compression spring to push the valve ball cap to move;

[0019] S14. Start the hydraulic actuator, control the hydraulic axis and the position of the compression piece through the hydraulic controller, fill the high-pressure gas source into the high-pressure chamber through the pipeline interface, and record the pressure-time curve of the pressure sensor;

[0020] S15. If there is leakage between the valve ball and the nozzle or the pressure cannot be stabilized at a certain expected value, repeat steps S11 to S14 until the internal pressure of the valve ball type pneumatic valve pressure stabilizing device is stabilized at a certain expected value and no leakage occurs.

[0021] Furthermore, the S2 includes the following steps:

[0022] S21. Adjust the movement stroke x of the hydraulic axis. The movement stroke value is determined by the mounting frame scale line. Construct the corresponding relationship between the movement stroke x of the hydraulic axis and the steady-state pressure p in the high-pressure chamber.

[0023] S22. Check and clean the ball-type pneumatic valve pressure stabilization device, process and archive the experimental data, and complete the ball-type pneumatic valve pressure stabilization test experiment.

[0024] By adopting the above technical solution, the present invention has the following advantages:

[0025] The present invention provides a valve ball type pneumatic valve pressure stabilizing device and an experimental method. Based on modular design thinking, by designing the size of the spherical valve ball and the valve ball cap and nozzle configuration, a 0-20 MPa wide pressure range pressure stabilizing experimental environment can be constructed according to experimental requirements, so that the environmental pressure is matched with the expected experimental task, and an experimental basis is provided for further testing of the combustion characteristics of solid propellants under specific pressure environments; a set of hydraulic actuators, valve balls and auxiliary devices are adopted to achieve the goal of high-precision pressure dynamic regulation, with low cost and effective reduction of system complexity; by controlling the movement law of the hydraulic actuator and quantifying the correspondence between the hydraulic axis movement stroke and pressure, the pre-regulation and precise regulation of the pressure in the device can be achieved, thereby improving the accuracy, safety and reliability of the experiment; the valve ball type pneumatic valve pressure stabilizing device and experimental method proposed in the present invention have a simple structure, are easy to process and install, and have low maintenance cost, can be customized according to the requirements of the test task, and solve the problem of accurately controlling the environmental pressure in traditional pressure stabilization experiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural cross-sectional view of a valve ball type pneumatic valve pressure stabilizing device of the present invention;

[0027] Figure 2 This is a structural cross-sectional view of a high-pressure chamber in a specific embodiment of the present invention;

[0028] Figure 3 A structural cross-sectional view of a nozzle in a specific embodiment of the present invention;

[0029] Figure 4 It is a structural cross-sectional view of the valve ball cap in a specific embodiment of the present invention;

[0030] Figure 5 It is a structural schematic diagram of a hydraulic actuator in a specific embodiment of the present invention;

[0031] Figure 6 It is a structural schematic diagram of the mounting frame in a specific embodiment of the present invention;

[0032] Figure 7 This is a cross-sectional view of the structure of the mounting frame in a specific embodiment of the present invention;

[0033] Figure 8 is a curve of pressure variation over time in a specific embodiment of the present invention;

[0034] Figure 9 Schematic diagram of the movement stroke change of the hydraulic actuator in a specific embodiment of the present invention.

[0035] Figure markings: 1—hydraulic controller; 2—hydraulic actuator; 3—pressure plate; 4—pressure spring; 5—valve ball cap; 6—valve ball; 7—nozzle; 8—mounting frame; 9—high-pressure chamber; 10—pressure sensor; 11—pipeline interface; 2a—hydraulic shaft; 2b—hydraulic actuator body; 2c—line; 5a—valve ball cap ball top; 5b—valve ball cap base; 5c—valve ball cap valve stem; 7a—nozzle base; 7b—nozzle expansion section; 7c—nozzle throat; 7d—nozzle convergence section; 8a—mounting frame platform; 8b—mounting frame scale line; 8c—mounting frame support leg; 8d—mounting frame exhaust groove; 8e—mounting frame base; 8f—mounting frame base groove; 9a—high-pressure chamber main chamber; 9b—high-pressure chamber top base. DETAILED DESCRIPTION

[0036] The technical solution of the present invention is described in detail below with reference to the accompanying drawings. It should be noted that, in this document, relational terms such as first and second, etc., are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0037] like Figure 1As shown, the present invention provides a valve ball type pneumatic valve pressure stabilizing device, including a hydraulic controller 1, a hydraulic actuator 2, a clamping plate 3, a clamping spring 4, a valve ball cap 5, a valve ball 6, a nozzle 7, a mounting bracket 8, a high-pressure chamber 9, a pressure sensor 10, and a pipeline interface 11; pressure sensors 10 and pipeline interfaces 11 are installed on both sides of the high-pressure chamber 9, and a nozzle 7 and a mounting bracket 8 arranged outside the nozzle 7 are installed in the top center of the high-pressure chamber 9. A hydraulic actuator 2 is fixedly installed on the top of the mounting bracket 8, and the hydraulic actuator 2 is electrically connected to the hydraulic controller 1; a clamping plate 3 and a clamping spring 4 are installed in sequence below the hydraulic actuator 2, and the bottom of the clamping spring 4 is sleeved on the top of the valve ball cap 5; the valve ball 6 is installed between the valve ball cap 5 and the nozzle 7, and the fit between the valve ball 6 and the valve ball cap 5 and the nozzle 7 is determined by the distance that the hydraulic actuator 2 presses down the clamping plate 3, and the pressure in the high-pressure chamber 9 is regulated by the relative position between the valve ball 6 and the nozzle 7. According to the test requirements, the present invention can control the hydraulic actuator 2 through the hydraulic controller 1 to drive the compression spring 4 to apply downward pressure to the valve ball cap 5, adjust the fit between the valve ball 6 and the nozzle 7, and achieve relative stability of the internal pressure of the high-pressure chamber 9, providing an experimental basis for further constant-pressure experimental tests such as solid propellant combustion response and gas generator thrust control.

[0038] like Figure 2 As shown, the main body of the high-pressure chamber 9 is a hollow cylinder made of 30CrMnSiA. It comprises a main chamber 9a and a base 9b positioned at the center of the main chamber's top. A pressure sensor 10 is fixedly mounted on the lower portion of one side wall of the main chamber 9a, while a pipeline interface 11 is mounted on the other side wall. The base 9b is a hollow boss-like structure that mates with the nozzle 7.

[0039] like Figure 3 As shown, the main body of the nozzle 7 is a classic Laval nozzle configuration, made of SiC ceramic, including a T-shaped nozzle base 7a, which is installed in conjunction with the high-pressure chamber top base 9b; the internal configuration of the nozzle 7 includes a hemispherical nozzle expansion section 7b, a cylindrical nozzle throat 7c and a conical nozzle convergence section 7d; wherein, the nozzle expansion section 7d is installed in conjunction with the valve ball 6, and the two have the same diameter.

[0040] like Figure 4As shown, the valve ball cap 5 is in an inverted T-shape and made of SiC ceramic. It includes a ball cap 5a, a base 5b, and a valve cap stem 5c mounted on top of the base 5b. A retractable compression spring 4 is mounted above the valve cap stem 5c. The ball cap 5a is mated with the valve ball 6, and the diameter of the base 5b is the same as the outer diameter of the compression plate 3. The valve ball 6 is made of 95% zirconium oxide, with its lower portion mated with the nozzle 7 and its upper portion mated with the ball cap 5a. The compression spring 4 is made of alloy spring steel, with its inner diameter matching the outer diameter of the valve cap stem 5c and no larger than the diameter of the base 5b. The compression plate 3 is mounted on top of the compression spring 4.

[0041] like Figure 5 As shown, the hydraulic actuator 2 includes a hydraulic actuator body 2b, a hydraulic shaft 2a arranged below the hydraulic actuator body, and a line 2c arranged above the hydraulic actuator body; the hydraulic actuator body 2b is fixedly mounted on the mounting frame 8, the hydraulic shaft 2a is installed in conjunction with the clamping plate 3, and the hydraulic actuator 2 is connected to the hydraulic controller 1 through the line 2c.

[0042] like Figure 6 、 Figure 7 As shown, the mounting frame 8 is a hollow truss structure made of 45 steel, including a mounting frame platform 8a at the top, a plurality of mounting frame legs 8c arranged at the bottom of the mounting frame platform 8a, a plurality of evenly processed mounting frame scale lines 8b arranged on the mounting frame legs, a plurality of periodically evenly distributed mounting frame exhaust grooves 8d, a bottom mounting frame base 8e and a mounting frame base groove 8f arranged inside the mounting frame base; the mounting frame base groove 8f is a stepped concave cavity configuration, which is respectively installed with the valve ball cap 5 and the high-pressure chamber top base 9b, the mounting frame platform 8a is installed with the hydraulic actuator body 2b, and the mounting frame 8 is equipped with a clamping plate 3, a clamping spring 4, a valve ball cap 5, a valve ball 6 and a nozzle 7.

[0043] The main body of the compression plate 3 is a thin cylindrical body made of 45 steel, and its outer diameter is the same as the diameter of the valve ball cap base 5b; the upper part of the compression plate 3 is installed in conjunction with the hydraulic shaft 2a, the hydraulic actuator 2b is connected to the hydraulic controller 1 through the line 2c, and the hydraulic actuator body 2b is fixedly installed on the mounting frame 8.

[0044] The present invention also provides a ball-type pneumatic valve pressure stabilization test method, comprising the following steps:

[0045] S1. Preparation for the pressure stabilization experiment of ball-type pneumatic valve;

[0046] Among them, S1 includes the following specific steps:

[0047] S11. Based on the target experimental pressure range, design the following components: the compression plate 3, compression spring 4, valve ball cap 5, valve ball 6, nozzle 7, mounting bracket 8, and high-pressure chamber 9. Select the appropriate range of pressure sensor 10, hydraulic actuator 1, and hydraulic controller 2 to ensure reasonable installation dimensions.

[0048] S12. Assemble the components in S11 according to the valve ball type pneumatic valve pressure stabilizing device to form a valve ball type pneumatic valve pressure stabilizing device;

[0049] S13. Check the rationality of the assembly of the various components of the valve ball pneumatic valve pressure stabilizing device, the fit and airtightness between the valve ball 6, valve ball cap 5, and nozzle 7, and the reliability of the movement of the valve ball cap 5 by the compression of the compression spring 4;

[0050] S14. Start the hydraulic actuator 2, control the position of the hydraulic axis and the compression plate 3 through the hydraulic controller 1, fill the high-pressure gas source into the high-pressure chamber 9 through the pipeline interface 11, and record the pressure-time curve of the pressure sensor 10 as shown in FIG. Figure 8 As shown;

[0051] S15. If there is leakage between the valve ball 6 and the nozzle 7 or the pressure cannot be stabilized at a certain expected value, repeat steps S11 to S14 until the internal pressure of the valve ball type pneumatic valve pressure stabilizing device is stabilized at a certain expected value and no leakage occurs.

[0052] S2. Experimental process of the pressure stabilization experiment of the ball-type pneumatic valve.

[0053] S2 includes the following specific steps:

[0054] S21. Adjust the movement stroke x of the hydraulic axis 2a. The movement stroke value is determined by the mounting frame scale line 8b. When the movement stroke is x1, the specific example is Figure 9 As shown in (a), high-pressure gas is continuously injected into the high-pressure chamber 9 through the pipeline interface 11. When obvious leakage occurs between the valve ball 6 and the nozzle 7 and the pressure recorded by the pressure sensor 10 no longer increases, the corresponding steady-state pressure p1 is recorded. When the movement stroke of the hydraulic shaft 2a increases to x2, as shown in FIG. Figure 9 As shown in (b), the inflation flow rate is continuously increased until obvious air leakage occurs between the valve ball 6 and the nozzle 7 and the pressure recorded by the pressure sensor 10 no longer increases. The corresponding steady-state pressure p2 at this time is recorded. The same logic is applied to the remaining movement strokes, thereby constructing a corresponding relationship between the movement stroke x of the hydraulic shaft and the steady-state pressure p in the high-pressure chamber.

[0055] S22. Check and clean the ball-type pneumatic valve pressure stabilization device, process and archive the experimental data, and complete the ball-type pneumatic valve pressure stabilization test experiment.

[0056] Finally, it should be pointed out that although the present invention has been described with reference to the current specific embodiments, ordinary technicians in this technical field should realize that the above embodiments are only used to illustrate the present invention and are not used to limit the present invention. Various equivalent changes or substitutions can be made without departing from the concept of the present invention. Therefore, as long as the changes to the above embodiments are within the scope of the essential spirit of the present invention,

Claims

1. An experimental method for a ball-type pneumatic valve pressure stabilizing device, characterized in that: The valve ball type pneumatic valve pressure stabilizing device includes a hydraulic controller, a hydraulic actuator, a compression plate, a compression spring, a valve ball cap, a valve ball, a nozzle, a mounting bracket, a high-pressure chamber, a pressure sensor and a pipeline interface; the pressure sensor and the pipeline interface are provided on both sides of the high-pressure chamber, the nozzle and the mounting bracket arranged outside the nozzle are provided on the top of the high-pressure chamber, the hydraulic actuator is provided on the top of the mounting bracket, and the hydraulic actuator is electrically connected to the hydraulic controller; the compression plate and the compression spring are installed in sequence below the hydraulic actuator, and the bottom of the compression spring is sleeved on the top of the valve ball cap; the valve ball is installed between the valve ball cap and the nozzle, and includes the following steps: S1. Preparation for the pressure stabilization experiment of ball-type pneumatic valve; Said S1 comprises the following steps: S11. Design the compression plate, compression spring, valve cap, valve ball, nozzle, mounting bracket, and high-pressure chamber based on the target experimental pressure range. Select the appropriate range of pressure sensor, hydraulic actuator, and hydraulic controller. S12. Assemble the components in S11 according to the valve ball type pneumatic valve pressure stabilizing device to form a valve ball type pneumatic valve pressure stabilizing device; S13. Check the rationality of the assembly of the various components of the valve ball pneumatic valve pressure stabilizing device, the fit and airtightness between the valve ball, valve ball cap, and nozzle, and the reliability of the compression spring to push the valve ball cap to move; S14. Start the hydraulic actuator, control the hydraulic axis and the position of the compression piece through the hydraulic controller, fill the high-pressure gas source into the high-pressure chamber through the pipeline interface, and record the pressure-time curve of the pressure sensor; S15. If leakage occurs between the valve ball and the nozzle or the pressure cannot be stabilized at a certain expected value, repeat steps S11 to S14 until the pressure inside the valve ball type pneumatic valve pressure stabilizing device is stabilized at a certain expected value and no leakage occurs; S2. Experimental process of ball-type pneumatic valve pressure stabilization experiment; The S2 comprises the following steps: S21. Adjust the movement stroke of the hydraulic axis x The corresponding value of the motion stroke is determined by the scale line of the mounting frame to construct the motion stroke of the hydraulic axis x and the steady-state pressure in the high-pressure chamber p The corresponding relationship between them; S22. Check and clean the ball-type pneumatic valve pressure stabilization device, process and archive the experimental data, and complete the ball-type pneumatic valve pressure stabilization test experiment.

2. The experimental method of a ball-type pneumatic valve pressure stabilizing device according to claim 1 is characterized in that: The high-pressure chamber is a hollow cylinder, including a high-pressure chamber main chamber and a high-pressure chamber top base arranged at the center position of the top of the high-pressure chamber main chamber; the pressure sensor and the pipeline interface are respectively provided on the two side walls of the high-pressure chamber main chamber, and the high-pressure chamber top base is a hollow boss shape, which is installed in conjunction with the nozzle.

3. The experimental method of a ball-type pneumatic valve pressure stabilizing device according to claim 2, characterized in that: The nozzle body is a classic Laval nozzle configuration, including a T-shaped nozzle base, which is installed in conjunction with the top base of the high-pressure chamber; the internal configuration of the nozzle includes a hemispherical nozzle expansion section, a cylindrical nozzle throat and a conical nozzle convergent section, and the nozzle convergent section is installed in conjunction with the valve ball.

4. The experimental method of a ball-type pneumatic valve pressure stabilizing device according to claim 3 is characterized in that: The shape of the valve ball cap is an inverted T-shape, including a valve ball cap ball top, a valve ball cap base and a valve ball cap valve stem arranged on the upper part of the valve ball cap base; the compression spring is sleeved on the upper part of the valve ball cap valve stem, the valve ball cap ball top is installed in cooperation with the valve ball, and the diameter of the valve ball cap base is the same as the outer diameter of the compression plate.

5. The experimental method of a ball-type pneumatic valve pressure stabilizing device according to claim 4, characterized in that: The hydraulic actuator includes a hydraulic actuator body, a hydraulic shaft arranged below the hydraulic actuator body, and a circuit arranged above the hydraulic actuator body; the hydraulic actuator body is fixedly mounted on the mounting frame, the hydraulic shaft is installed in cooperation with the clamping plate, and the hydraulic actuator is connected to the hydraulic controller through the circuit.

6. The experimental method of a ball-type pneumatic valve pressure stabilizing device according to claim 5, characterized in that: The mounting frame is a hollow truss structure, including a mounting frame platform at the top, a plurality of mounting frame legs arranged at the bottom of the mounting frame platform, a plurality of evenly processed mounting frame scale lines arranged on the mounting frame legs, a plurality of periodically evenly distributed mounting frame exhaust grooves, a mounting frame base at the bottom and a mounting frame base groove arranged inside the mounting frame base; the mounting frame base groove is a stepped concave cavity configuration, which is respectively installed in conjunction with the valve ball cap and the top base of the high-pressure chamber, the mounting frame platform is installed in conjunction with the hydraulic actuator body, and the mounting frame is equipped with the clamping plate, the clamping spring, the valve ball cap, the valve ball and the nozzle.

7. The experimental method of a ball-type pneumatic valve pressure stabilizing device according to claim 5, characterized in that: The compression plate is a thin cylindrical body, the material of the compression plate is 45# steel, and the bottom of the compression plate is mounted in cooperation with the compression spring.

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