CN115866409A - An explosion shock wave and oil-gas coupled explosion test device - Google Patents

Abstract

The invention relates to the technical field of image acquisition in explosive and oil gas explosion tests, in particular to a test device for an explosion shock wave and oil gas coupling explosion test, wherein the upper end and the lower end of a mixing inner cavity are provided with observation windows in a penetrating manner, and the upper end and the lower end of each observation window are provided with schlieren systems, and the test device has the advantages that: through increase the schlieren system in current analogue test, utilize the light source to go up the shining of level mirror to provide illumination, the level mirror is down in the cooperation, will form images from the blast wave that passes in the observation window, utilizes high-speed camera to carry out image acquisition, thereby avoids gathering in the pipeline, has improved data acquisition's convenience greatly and the protection to equipment, and then is convenient for pass the observation window to study forward movement route to flame.

Description

An explosion shock wave and oil-gas coupled explosion test device

technical field

The invention relates to the technical field of image acquisition in explosive and oil-gas explosion tests, in particular to a test device for explosion shock wave and oil-gas coupled explosion tests.

Background technique

In order to improve the safety of oil and gas transportation in pipelines, it is necessary to carry out simulation tests on the situation after the explosion of oil and gas transportation pipelines. The existing test methods are mostly explosive detonation, and sensors are used to collect data such as pressure and photoelectricity after explosion.

In the test of the fuel-gas mixture ignited by the shock wave generated by the explosive explosion, the shock wave and air wave generated by the explosion are generated in the pipeline, the sensor can only collect data, and cannot clearly observe the specific situation, and due to the conduction of the explosion , it is difficult to realize image acquisition from inside the pipeline, which makes it difficult to fully collect data on the specific conditions in the test process.

Contents of the invention

The object of the present invention is to provide a test device for detonation shock wave and oil-gas coupling explosion test, so as to solve the problems raised in the above-mentioned background technology.

To achieve the above object, the present invention provides the following technical solutions:

A test device for detonation shock wave and oil-gas coupled explosion test, including a test tool for detonation shock wave and oil-gas coupling explosion test, the test tool is provided with a filling cavity filled with explosives and a mixing cavity filled with oil and gas , the filling cavity and the mixing cavity are separated by a diaphragm, the upper and lower ends of the mixing cavity are provided with observation windows, the upper and lower ends of the observation window are provided with a schlieren system, and the schlieren system Shadow system includes:

An upper mounting plate, the upper mounting plate is rotatably mounted with an upward mirror located directly above the observation window, and a light source facing the upward mirror is provided at the lower end of one side of the upper mounting plate;

Lower mounting plate, said lower mounting plate is rotated and installed with the lower face mirror that is positioned at right below the observation window, the upper end of the lower face mirror is facing the upper face mirror, and the right side of the lower face mirror is provided with a camera for collecting explosion storms.

Preferably, one end of the mixing chamber is connected to an oil and gas tank and a vacuum pump, and the other end of the mixing chamber is provided with an explosion-proof fan.

Preferably, the inner wall of the mixing chamber is provided with a diaphragm, the upper and outer walls of the mixing chamber are respectively provided with multiple groups of pressure sensors distributed linearly, and the test tool is provided with multiple groups between the filling chamber and the diaphragm. Pressure Sensor.

Preferably, a telescopic column is vertically arranged on the upper mounting plate, the lower end of the telescopic column is fixed on the upper end of the test tool, the upper end of the telescopic column is fixed on the rear outer wall of the upper mounting plate, and the upper mounting plate is set There is a built-in connecting column, and the end of the telescopic column is fixed on the connecting column.

Preferably, both the upper mounting plate and the lower mounting plate are provided with a first rotating shaft, and the lowering mirror and the upper mirror are respectively mounted on the first rotating shaft.

Preferably, circular angle gauges are provided on the outer walls of the upper mounting plate and the lower mounting plate corresponding to the first rotating shaft, and pointers pointing to the angle gauges are provided on the outer walls of the lower mirror and the upper mirror.

Preferably, the other side of the upper mounting plate is provided with a second rotating shaft, the light source is rotatably mounted on the second rotating shaft, the upper mounting plate is provided with a chute, and the chute is arranged along the second rotating shaft and the first rotating shaft extending in a straight line, the rear end of the second rotating shaft is slidably installed in the chute.

Preferably, one side of the lower mounting plate is provided with a column fixed on the outer wall of the lower end of the test fixture, and the other side of the lower mounting plate is provided with an arc plate extending to the outside of the observation window, and the arc plate is provided with a turning groove. The camera is rotatably installed on the turning slot, and the center of the turning slot and the arc plate coincides with the first rotating shaft on the lower mounting plate.

Preferably, multiple groups of photoelectric sensors are arranged at the position corresponding to the pressure sensor at the lower end of the test fixture.

Preferably, a water mist system is provided on the side of the observation window close to the explosion-proof fan in the mixing chamber, and a heater is provided on the inner wall of the mixing chamber.

Compared with prior art, the beneficial effect of the present invention is:

In the present invention, by adding a schlieren system to the existing simulation test, the light source is used to irradiate the upper mirror to provide illumination, and cooperate with the lower mirror to image the explosion wave passing through the observation window, and use a high-speed camera to Image acquisition, thereby avoiding acquisition in the pipeline, greatly improves the convenience of data acquisition and the protection of equipment, and facilitates the study of the flame moving forward through the observation window.

Description of drawings

Fig. 1 is the test structure schematic diagram of the present invention;

Fig. 2 is a structural schematic diagram of the upper mounting plate of the present invention;

Fig. 3 is a schematic structural diagram of the schlieren system of the present invention;

Fig. 4 is a structural schematic diagram of the lower mounting plate of the present invention;

Fig. 5 is a schematic diagram of the three-dimensional structure of the upper mounting plate of the present invention;

Fig. 6 is a schematic diagram of the three-dimensional structure of the lower mounting plate of the present invention.

In the figure: 1. Test tooling; 2. Explosion-proof fan; 3. Filling inner cavity; 4. Diaphragm; 5. Mixing inner cavity; 6. Vacuum pump; 7. Oil and gas tank; 8. Upper mounting plate; 9. Lower installation board; 10. pressure sensor; 11. heater; 12. photoelectric sensor; 13. water mist system; 14. observation window; 15. camera; 16. lower mirror; 17. light source; 18. upper mirror; 19 , column; 20, telescopic column; 21, arc plate; 22, turning slot; 23, angle meter; 24, pointer; 25, first rotating shaft; 26, chute; 27, connecting column; 28, second rotating shaft.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Referring to Fig. 1 to Fig. 6, the present invention provides a technical solution:

A test device for an explosion shock wave and oil-gas coupling explosion test, including a test fixture 1 for the explosion shock wave and oil-gas coupling explosion test, the test fixture 1 is provided with a filling inner cavity 3 filled with explosives and a mixing chamber filled with oil and gas The cavity 5 is separated by the diaphragm 4 between the filling cavity 3 and the mixing cavity 5, forming a simulation test.

The upper and lower ends of the mixing chamber 5 are provided with observation windows 14 through which the actual flame travel path generated by the explosion can be observed easily.

The upper and lower ends of the observation window 14 are provided with a schlieren system. The schlieren system includes an upper mounting plate 8 and a lower mounting plate 9. The upper mounting plate 8 is rotatably mounted with an upper mirror 18 located directly above the observation window 14. One side lower end of plate 8 is provided with the light source 17 facing the upper mirror 18, and the lower mounting plate 9 is rotatably equipped with the lower mirror 16 directly below the observation window 14, and the upper end of the lower mirror 16 faces the upper face. mirror 18, the right side of the downward facing mirror 16 is provided with a camera 15 collecting explosion wind and waves.

By adding the schlieren system to the existing simulation test, the light source 17 is used to illuminate the upper mirror 18 to provide illumination, and cooperate with the lower mirror 16 to image the explosion wave passing through the observation window 14. The camera 15 is used for image acquisition, thereby avoiding the acquisition in the test fixture 1, which greatly improves the convenience of data acquisition and the protection of the equipment, and facilitates the research on the forward movement path of the flame through the observation window 14.

Further optimized design, one end of the mixing chamber 5 is connected to the oil and gas tank 7 and the vacuum pump 6, and the other end of the mixing chamber 5 is provided with an explosion-proof fan 2, and the mixed filling of oil and air is realized by setting the oil and gas tank 7 and the vacuum pump 6, and the explosion-proof Fan 2 achieves thorough mixing.

Further optimized design, the inner wall of the mixing chamber 5 is provided with a diaphragm 4, and the upper and outer walls of the mixing chamber 5 are respectively provided with multiple groups of pressure sensors 10 distributed linearly. The test tool 1 is located between the filling chamber 3 and the diaphragm There are multiple groups of pressure sensors 10 arranged between 4, and multiple groups of photoelectric sensors 12 are arranged at the position corresponding to the pressure sensor 10 at the lower end of the test fixture 1, and a water tank is installed on the side of the observation window 14 near the explosion-proof fan 2 in the mixing chamber 5. In the mist system 13, a heater 11 is arranged on the inner wall of the mixing chamber 5, and the data during the test can be measured by setting sensors.

In a further optimized design, the upper mounting plate 8 is vertically provided with a telescopic column 20, the lower end of the telescopic column 20 is fixed on the upper end of the test tooling 1, and the upper end of the telescopic column 20 is fixed on the rear outer wall of the upper mounting plate 8. The mounting plate 8 is provided with a built-in connecting column 27, and the end of the telescopic column 20 is fixed on the connecting column 27. By setting the connecting column 27, the fixed connection between the upper mounting plate 8 and the telescopic column 20 is realized, and then the telescopic column 20 is used. Realize the distance between the upper mounting plate 8 and the upper port of the observation window 14, so as to facilitate the adjustment of the length of the incident light and achieve the purpose of adjusting the brightness.

Further optimized design, the upper mounting plate 8 and the lower mounting plate 9 are all provided with the first rotating shaft 25, the lower mirror 16 and the upper mirror 18 are respectively installed on the first rotating shaft 25, the upper mounting plate 8 and the lower mounting plate The position corresponding to the first rotating shaft 25 on the outer wall of 9 is provided with an annular angle meter 23, and the pointer 24 pointing to the angle meter 23 is provided on the outer wall of the lower mirror 16 and the upper mirror 18.

The rotation installation of the schlieren system is realized by setting the rotating shaft, which facilitates the adjustment of the angle of the mirror surface and achieves the purpose of accurately corresponding to the observation window 14 .

Further optimized design, the other side of the upper mounting plate 8 is provided with a second rotating shaft 28, the light source 17 is rotatably mounted on the second rotating shaft 28, the upper mounting plate 8 is provided with a chute 26, and the chute 26 is arranged along the second rotating shaft 28 Extending in a straight line with the first rotating shaft 25 , the rear end of the second rotating shaft 28 is slidably installed in the slide groove 26 . The position of the light source 17 is realized by setting the chute 26, so as to adjust the distance between the light source 17 and the upper mirror 18, thereby increasing the illumination intensity provided by the light source 17.

Further optimized design, one side of the lower mounting plate 9 is provided with a column 19 fixed on the outer wall of the lower end of the test fixture 1, and the other side of the lower mounting plate 9 is provided with an arc plate 21 extending to the outside of the observation window 14, and on the arc plate 21 A rotary slot 22 is provided, and the camera 15 is rotated and installed on the rotary slot 22. The center of the rotary slot 22 and the arc plate 21 coincides with the first rotating shaft 25 on the lower mounting plate 9. By setting the rotary slot 22 and the camera 15, it is convenient to adjust The angle of the camera 15, so as to achieve the purpose of adjusting the acquisition imaging angle.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (10)

1. A test device for an explosion shock wave and oil gas coupling explosion test comprises a test tool (1) for the explosion shock wave and oil gas coupling explosion test, be provided with in experimental frock (1) fill inner chamber (3) and the mixed inner chamber (5) of filling oil gas of filling the explosive, fill and separate its characterized in that through diaphragm (4) between inner chamber (3) and mixed inner chamber (5): mix the upper and lower both ends of inner chamber (5) and run through and be provided with observation window (14), the upper and lower both ends of observation window (14) are provided with schlieren system, schlieren system includes:

the upper mounting plate (8) is rotatably provided with an upper magnifying lens (18) which is positioned right above the observation window (14), and the lower end of one side of the upper mounting plate (8) is provided with a light source (17) which is right opposite to the upper magnifying lens (18);

lower mounting panel (9), rotate on lower mounting panel (9) and install down set mirror (16) that are located observation window (14) under, the upper end of putting mirror (16) is just to putting mirror (18) on, and the right side of putting mirror (16) is provided with camera (15) of gathering explosion wind wave down.

2. The test device for the explosion shock wave and oil gas coupling explosion test of claim 1, wherein: one end of the mixing inner cavity (5) is connected with the oil-gas tank (7) and the vacuum pump (6), and the other end of the mixing inner cavity (5) is provided with the explosion-proof fan (2).

3. The test device for the explosion shock wave and oil gas coupling explosion test of claim 2, wherein: be provided with diaphragm (4) on the inner wall of mixing inner chamber (5), the last outer wall of mixing inner chamber (5) is provided with multiunit pressure sensor (10) that linear distribution respectively, lies in on experimental frock (1) and loads and is provided with multiunit pressure sensor (10) between inner chamber (3) and diaphragm (4).

4. The test device for the explosion shock wave and oil gas coupling explosion test of claim 1, which is characterized in that: go up vertical flexible post (20) that is provided with on mounting panel (8), the lower extreme of flexible post (20) is fixed in the upper end of experimental frock (1), and the upper end tip of flexible post (20) is fixed at the rear side outer wall of last mounting panel (8), goes up to be provided with embedded spliced pole (27) on mounting panel (8), and the end fixing of flexible post (20) is on spliced pole (27).

5. The test device for the explosion shock wave and oil gas coupling explosion test of claim 4, wherein: go up all to be provided with first pivot (25) on mounting panel (8) and lower mounting panel (9), lower speculum (16) and last mirror (18) are installed respectively on first pivot (25).

6. The test device for the explosion shock wave and oil gas coupling explosion test of claim 5, wherein: the outer walls of the upper mounting plate (8) and the lower mounting plate (9) are provided with annular angle meters (23) at positions corresponding to the first rotating shaft (25), and the outer walls of the lower mirror (16) and the upper mirror (18) are provided with pointers (24) pointing to the angle meters (23).

7. The test device for the explosion shock wave and oil gas coupling explosion test of claim 6, which is characterized in that: go up the opposite side of mounting panel (8) and be provided with second pivot (28), light source (17) rotate to be installed on second pivot (28), upward are provided with spout (26) on mounting panel (8), spout (26) extend along the straight line between second pivot (28) and first pivot (25), the rear end slidable mounting of second pivot (28) is in spout (26).

8. The test device for the explosion shock wave and oil gas coupling explosion test of claim 7, which is characterized in that: one side of lower mounting panel (9) is provided with stand (19) of fixing at experimental frock (1) lower extreme outer wall, and the opposite side of lower mounting panel (9) is provided with arc board (21) that extend to observation window (14) outside, be provided with on arc board (21) turn trough (22), camera (15) are rotated and are installed on turn trough (22), and the centre of a circle of turn trough (22) and arc board (21) and lower mounting panel (9) go up first pivot (25) coincidence.

9. The test device for the explosion shock wave and oil gas coupling explosion test of claim 3, wherein: and a plurality of groups of photoelectric sensors (12) are arranged at the positions of the lower end of the test tool (1) corresponding to the pressure sensors (10).

10. The test device for the explosion shock wave and oil gas coupling explosion test of claim 9, wherein: a water mist system (13) is arranged on one side, close to the anti-explosion fan (2), of the observation window (14) in the mixing inner cavity (5), and a heater (11) is arranged on the inner wall of the mixing inner cavity (5).

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