Diaphragm pre-pressing forming equipment for blast wave simulation shock tube and blast experiment equipment of diaphragm pre-pressing forming equipment

Abstract

The invention relates to diaphragm pre-pressing forming equipment for an explosive wave simulation shock tube and blasting experiment equipment thereof, belongs to the technical field of strong dynamic load resistant safety protection engineering, and meets the requirements of diaphragm pre-pressing forming and blasting experiment for the explosive wave simulation shock tube. The diaphragm pre-pressing forming equipment comprises a medium-pressure section, a medium-pressure section support, a main barrel, a main barrel support, a diaphragm pressing ring and a pressure sensor. Two ends of the medium-pressure section are opened, and a diaphragm is mounted at one end and is compressed and mounted through a diaphragm pressing ring; the other end is connected with the main cylinder; in the medium-pressure section, the outer cylinder wall of the main cylinder is provided with a medium injection interface and a sensor interface, and the pressure sensor is connected through the sensor interface. The diaphragm blasting experiment equipment comprises diaphragm pre-pressing forming equipment, a glass light window, a temperature sensor and a camera. The device and the method are used for pre-pressing forming of the diaphragm of the blast wave simulation shock tube and analysis of the blast state of the diaphragm.

Description

Technical Field

[0001] The invention belongs to the technical field of strong dynamic load resistance safety protection engineering, and in particular relates to a diaphragm pre-pressing forming device for an explosion wave simulation shock wave tube and a blasting experimental device thereof. Background Art

[0002] The explosion wave simulation shock tube is an ideal platform for studying the ability of equipment and facilities to resist strong dynamic loads. The main structure consists of a high-pressure section, a medium-pressure section, and a low-pressure section separated by a diaphragm. After the diaphragm ruptures, the gas in the high-pressure section is released to form a directional flow of explosion-like shock waves. The explosion wave simulation shock tube can truly simulate the shock wave generated by the explosion, and high-pressure gas driving the membrane to break is one of its important driving methods; the diaphragm bursting pressure and diaphragm bursting state become important factors affecting the stability of the performance of the explosion wave simulation shock tube. Summary of the invention

[0003] In order to meet the needs of diaphragm pre-compression molding and explosion experiment for explosion wave simulation shock tube, the present invention proposes a diaphragm pre-compression molding device for explosion wave simulation shock tube and an explosion experiment device thereof.

[0004] The technical solution adopted by the present invention to solve the technical problem is:

[0005] A diaphragm forming and experimental equipment for explosion wave simulation shock tube, the diaphragm forming and experimental equipment comprising a diaphragm, a medium-pressure section, a medium-pressure section bracket, a main cylinder, and a main cylinder bracket; the main cylinder is installed on the main cylinder bracket and is tightened and fixed by bolts and gaskets; the medium-pressure section is installed on the medium-pressure section bracket, and the axis is highly consistent with the axis of the main cylinder; the main cylinder bracket is fixed to the foundation by anchor bolts; a medium injection interface and a sensor interface are provided on the outer wall of the main cylinder; the medium injection interface can inject liquid or gaseous medium into the main cylinder; the sensor interface can be connected to pressure and temperature sensors to monitor the pressure and temperature of the medium in the cylinder.

[0006] The diaphragm forming and testing equipment can carry out double diaphragm or single diaphragm bursting experiments; the double diaphragm bursting experiment is that the diaphragm is installed between the medium-pressure section and the main cylinder and between the diaphragm pressure ring and the medium-pressure section, and the gaseous medium is injected into the main cylinder and the medium-pressure section to complete the bursting experiment; the single diaphragm bursting experiment is that the diaphragm is installed between the main cylinder and the diaphragm pressure ring, and the gaseous medium is injected into the main cylinder to complete the bursting experiment.

[0007] The diaphragm forming and experimental equipment can perform pre-pressing forming on the diaphragm; the diaphragm pre-pressing forming diaphragm is installed between the main cylinder and the diaphragm pressure ring, and the liquid medium is injected into the main cylinder to a predetermined pressure value to complete the pre-pressing forming; the diaphragm is connected and fastened by a plurality of through holes evenly spaced along the circumferential direction.

[0008] The diaphragm forming and testing equipment can carry out 2MPa-7MPa bursting test for a single diaphragm and 9MPa-13MPa bursting test for a double diaphragm.

[0009] The glass light window can be used to photograph the explosion situation of the back side of the diaphragm through a high-speed camera when conducting a diaphragm explosion experiment.

[0010] The diaphragm forming and experimental equipment is made of steel or aluminum.

[0011] The beneficial effects of the present invention are:

[0012] The invention discloses a diaphragm pre-pressing forming device for an explosion wave simulation shock tube, which can perform diaphragm pre-pressing forming and single diaphragm or double diaphragm bursting experiments, can produce diaphragms of different thicknesses and different bursting pressures, and can experimentally verify the diaphragm state at the moment of diaphragm rupture, thereby ensuring the comprehensive performance stability of the explosion wave simulation shock tube, providing a better explosion wave simulation experimental environment, and having good promotion and application value.

[0013] The invention discloses a diaphragm pre-pressing forming device for an explosion wave simulation shock tube, which has reasonable structural design, simple structure, good repeatability and high safety and reliability.

[0014] The invention discloses a membrane bursting experimental device for simulating a shock wave tube with an explosion wave, which can provide good experimental conditions, have various sensor interfaces and a high-speed camera shooting light window, and can record the membrane state at the moment of membrane forming or bursting in a reasonable way. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic structural diagram of a diaphragm pre-pressing molding device according to an embodiment of the present invention;

[0016] Figure 2 It is a schematic diagram of the medium pressure section;

[0017] Figure 3 yes Figure 1 sectional view of

[0018] Figure 4 yes Figure 3 A partial enlarged view of part I.

[0019] In the figure: 1. diaphragm, 2. medium pressure section, 3. diaphragm pressure ring, 4. medium pressure section bracket, 5. gasket, 6. main cylinder, 7. light window flange nut, 8. light window flange bolt, 9. light window sealing seat gasket, 10. light window end cover bolt, 11. light window end cover gasket, 12. light window end cover, 13. glass light window, 14. light window sealing seat, 15. light window base, 16. light window flange gasket, 17. main cylinder bracket, 18. diaphragm pressure ring bolt, 201. medium injection interface, 202. sensor interface. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] Embodiment 1

[0022] like Figure 1 As shown, combined with Figure 3 , Figure 4 A diaphragm experiment and molding equipment for explosion wave simulation shock tube, the diaphragm molding equipment mainly includes a diaphragm 1, a medium-pressure section 2, a medium-pressure section bracket 4, a main cylinder 6, and a main cylinder bracket 17; the medium-pressure section 2 is open at both ends, one end is pressed tightly against the diaphragm 1 by a diaphragm pressure ring 3, and the other end is connected to the main cylinder 6, and the diaphragm 1 is installed between the two to realize a double rupture membrane experiment; the diaphragm 1, the medium-pressure section 2, the main cylinder 6 and the diaphragm pressure ring 3 are provided with a plurality of through holes evenly spaced along the circumferential direction for mutual fastening connection, and a metal graphite wound gasket is used for sealing between the diaphragm 1 and the medium-pressure section 2 and the main cylinder 6; the medium-pressure section bracket 4 and the main cylinder bracket 17 are used to ensure that the height of the axis lines of the two are consistent, and can be fixed to the foundation through anchor bolts to withstand the recoil generated during the compression deformation of the diaphragm or at the moment of diaphragm rupture.

[0023] like Figure 2 As shown, a medium injection port 201 and a sensor interface 202 are provided on the outer cylinder wall of the medium-pressure section 2. The medium injection port is connected to a three-way pipeline and a solenoid valve, and the medium can be injected or discharged into the medium-pressure section according to actual needs; the sensor interface is connected to a pressure sensor, and the pressure value in the medium-pressure section can be displayed in real time.

[0024] The diaphragm experiment and forming equipment for explosion wave simulation shock tube can be used for pre-pressing and forming of diaphragms. Different pressure values ​​are set according to actual needs to pre-press and form diaphragms of different thicknesses to obtain diaphragms with different rupture pressures; the rupture pressure of the above diaphragm is 2 to 13 MPa.

[0025] The diaphragm is made of stainless steel or aluminum; the outer diameter of the diaphragm is 640mm, and the effective membrane breaking diameter is 380mm.

[0026] The diaphragm experiment and forming equipment for explosion wave simulation shock wave tube can be used for diaphragm bursting experiment. According to actual needs, single diaphragm or double diaphragm bursting experiment can be carried out.

Claims

1. A diaphragm pre-pressing molding device for explosion wave simulation shock tube, It is characterized in that It comprises a medium-pressure section (2), a medium-pressure section bracket (4), a main cylinder (6), a main cylinder bracket (17), a diaphragm pressure ring (3), and a pressure sensor; The intermediate pressure section (2) and the main cylinder (6) are both central axis rotating structures, in the shape of a circular tube, the intermediate pressure section (2) and the main cylinder (6) are matched and connected, and the central axes are on the same horizontal line; The intermediate pressure section support (4) is used to support the intermediate pressure section (2) and is fixed on the foundation; the main cylinder support (17) is used to support the main cylinder (6) and is fixed on the foundation; The medium-pressure section (2) has openings at both ends, one end of which is equipped with a diaphragm (1), and the installed diaphragm (1) is pressed and installed by a diaphragm pressing ring (3); the other end is connected to the main cylinder (6); The medium pressure section (2) and the main cylinder (6) are provided with a medium injection interface (201) and a sensor interface (202) on the outer cylinder wall; the medium injection interface (201) is installed with a three-way pipeline and a solenoid valve for injecting or discharging the medium into or out of the medium pressure section (2) and the main cylinder (6); the pressure sensor is connected via the sensor interface (202) and is used to display the pressure value of the medium in the medium pressure section (2) and the main cylinder (6); The diaphragm (1) is a diaphragm used for a shock tube for simulating explosion waves.

2. The diaphragm pre-pressing molding device according to claim 1, It is characterized in that Diaphragms (1) are installed at both ends of the medium-pressure section (2).

3. The diaphragm pre-pressing molding device according to claim 1, It is characterized in that Also includes a gasket (5); The gasket (5) is used for sealing the diaphragm (1) and the medium-pressure section (2) during compression installation, and for sealing the connection between the medium-pressure section (2) and the main cylinder (6).

4. The diaphragm pre-pressing molding device according to claim 3, It is characterized in that The gasket (5) is a metal graphite wound gasket.

5. The diaphragm pre-pressing molding device according to claim 1, It is characterized in that The diaphragm (1) has through holes evenly spaced in a circumferential direction for use in compacting and installing the diaphragm (1).

6. The diaphragm pre-pressing molding device according to claim 1, It is characterized in that The medium is a liquid phase medium or a gas phase medium.

7. A diaphragm bursting test device comprising the diaphragm pre-compression molding device according to any one of claims 1 to 6, It is characterized in that It also includes a glass light window (13), a temperature sensor, and a camera; The temperature sensor is connected via a sensor interface (202) and is used to display the temperature value of the medium in the medium pressure section (2) and the main cylinder (6); A glass light window (13) is installed at one end of the main cylinder (6) away from the medium-pressure section (2), and the center of the glass light window (13) is located on the central axis of the main cylinder (6); a camera is located outside the glass light window (13) and is used to photograph the morphology of the diaphragm (1).

8. The diaphragm bursting test equipment according to claim 7, It is characterized in that The camera is a high-speed camera.

9. The diaphragm bursting test equipment according to claim 7, It is characterized in that When diaphragms (1) are installed at both ends of the intermediate pressure section (2), it is used for double diaphragm bursting experiments.

10. The diaphragm bursting test equipment according to claim 7, It is characterized in that It also includes a light window base (15), a light window flange nut (7), a light window flange bolt (8), a light window flange gasket (16), a light window sealing seat (14), a light window end cover (12), a light window sealing seat gasket (9), and a light window end cover gasket (11); The light window base (15) is fixed to the main cylinder (6) via a light window flange nut (7) and a light window flange bolt (8), and is sealed via a light window flange gasket (16); the glass light window (13) is fixed in a light window sealing seat (14), and the two are installed together on the light window base (15), pressed by a light window end cover (12), and are sealed by a light window sealing seat gasket (9) and a light window end cover gasket (11).

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