A gas self-excited quick cut-off valve for light gas gun

Abstract

A gas self-excitation quick intercept valve for light gas gun belongs to the technical field of light / air gun transient loading simulation, and aims to solve the problem that the existing transient loading simulation test causes inaccurate results due to the fact that high-speed gas is loaded to the target together with the elastic body. The scheme is as follows: two rotating shafts are symmetrically arranged in the middle section of the two side plates of the box body, and the rotating shafts are rotationally connected with the top plate and the bottom plate; the intercept plate and the gas self-excitation plate connected at right angles are fixed to each rotating shaft, and the gas self-excitation plate is arranged on the projectile outlet side; the box body plates on the projectile inlet side are all provided with a plurality of exhaust holes with the two rotating shafts as boundaries; in the initial position, the two gas self-excitation plates are folded and the two semicircular notches are combined into a circular hole for the projectile to pass through; the projectile carrying high-speed gas enters the intercept valve, the gas self-excitation plates are quickly rotated to the projectile outlet side under the impact of the high-speed gas, and the two intercept plates are folded to block the channel in the box body, so that the high-speed gas is intercepted and the high-speed gas is diverted to be discharged from the exhaust holes of the plates.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of gas self-excitation quick cut-off valve of light gas gun, both can be used for the quick cut-off of light (empty) gas gun muzzle high-speed airflow, also can be used for the quick cut-off of muzzle airflow of artillery etc.Exclude the impact of high-pressure airflow to be loaded target, obtain accurate and effective loading test result, belong to light (empty) gas gun transient loading simulation technical field. BACKGROUND

[0002] Light (empty) gas gun transient loading simulation technology is widely used in aviation, aerospace and weapon and each field, it is launched to very high speed while in its muzzle also high-speed airflow is ejected, to surrounding environment and loaded target causes certain influence, how to design an effective quick cut-off valve, it is the key problem that must be solved in relevant research.For example, bird, hail and stone etc.External object high-speed impact laboratory simulation of aircraft, high-speed rail and car etc., high-speed kinetic energy interception momentum multiplication effect laboratory simulation research of small asteroid in deep space exploration, high-speed impact laboratory simulation of micro-meteoroid and space debris to on-orbit spacecraft protective structure etc., all need to exclude the impact of high-speed airflow to be loaded target.

[0003] Therefore, in view of the above shortcomings, an equipment is needed, which can cut off the high-speed gas carried by the projectile shot by light (empty) gas gun, so as to suppress or reduce the impact of high-speed gas on the loaded target, so that the transient loading simulation result is more accurate. SUMMARY

[0004] In view of the problem that high-speed gas is loaded to target together with elasticity in existing transient loading simulation test, resulting in inaccurate result, the present application provides a kind of gas self-excitation quick cut-off valve for light gas gun.

[0005] The gas self-excitation quick cut-off valve for light gas gun provided by the present application comprises a box body with two open ends, a rotating shaft 2, a cut-off plate 5, a gas self-excitation plate 6 and a rib plate 4.

[0006] The box body is enclosed by a top plate 3, a bottom plate 7 and two side plates 10, and the two open ends of the box body are respectively a projectile inlet and a projectile outlet.

[0007] Two rotating shafts 2 are symmetrically arranged in the middle section of the two side plates of the box body, and the rotating shafts 2 are rotationally connected with the top plate 3 and the bottom plate 7; each rotating shaft 2 is fixedly connected with a straightly connected cut-off plate 5 and a gas self-excitation plate 6, the cut-off plate 5 is arranged on the projectile inlet side, the gas self-excitation plate 6 is arranged on the projectile outlet side, and each gas self-excitation plate 6 has a semicircular notch.

[0008] The top plate 3, the bottom plate 7 and the two side plates 10 of the box body on the projectile inlet side are provided with a plurality of exhaust holes 11 with the two rotating shafts 2 as boundaries.

[0009] In the initial position, the two gas self-excitation plates 6 are folded and the two semicircular notches are combined into a circular hole for the projectile to pass through; the projectile carrying high-speed gas enters the intercepting valve, the gas self-excitation plates 6 rotate rapidly around the rotating shaft 2 to the projectile outlet side under the impact of high-speed gas, until the two intercepting plates 5 are folded to block the passage in the box, the high-speed gas is intercepted, and the high-speed gas is diverted to be discharged from the exhaust holes 11 of each plate.

[0010] Preferably, the buffer locking magnetic block 1 is also included, which is symmetrically arranged on the two side plates 10 of the box on the projectile outlet side and is used for locking the gas self-excitation plates 6, and one or two buffer locking magnetic blocks 1 are arranged on each side plate 10.

[0011] Preferably, the buffer locking magnetic block 1 is realized by using a permanent magnet, and the magnetic property of the permanent magnet is realized by using a switch.

[0012] Preferably, the intercepting plate position adjusting unit 9 is also included, which is symmetrically arranged on the two side plates 10 of the box on the projectile inlet side and is used for adjusting the initial angle of the intercepting plate 5.

[0013] Preferably, the intercepting plate position adjusting unit 9 is realized by using a screw rod, and the initial angle of the intercepting plate 5 is adjusted by the screwing depth of the screw rod.

[0014] Preferably, the rib plate 4 is also included, which is arranged between the intercepting plate 5 and the gas self-excitation plate 6 fixed on the same rotating shaft 2.

[0015] The gas self-excitation rapid intercepting valve has the advantages that the gas self-excitation rapid intercepting valve is installed in the expansion chamber at the muzzle of the light (air) gun, can rapidly realize the interception of the gas flow, and does not interfere with the test result when the projectile hits the target, so that the test result is accurate. The gas self-excitation rapid intercepting valve has the characteristics of high repeatability, simple structure, easy operation and low cost, and can be used to carry out high-speed impact tests of light (air) gun transient loading simulation technology under laboratory conditions, and meets the actual needs of engineering. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective structural schematic view of the gas self-excitation rapid intercepting valve for the light gas gun, and the top plate is omitted in the figure;

[0017] Figure 2 is a top view of the gas self-excitation rapid intercepting valve for the light gas gun in the initial state; Figure 1

[0018] Figure 3 is a top view of the gas self-excitation rapid intercepting valve for the light gas gun in the intermediate state; Figure 1

[0019] Figure 4 is​​Figure 1 Figure 2 is a top view of the termination state of the gas self-excitation quick cut-off valve of the present application;

[0020] Figure 5 Figure 1 is a schematic diagram of the application of the gas self-excitation quick cut-off valve of the present application to a light gas gun;

[0021] Figure 6 Figure 2 is a top view of the termination state of the gas self-excitation quick cut-off valve of the present application; Figure 5 Figure 3 is an enlarged view of a gas self-excitation quick cut-off valve in Figure 1. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0023] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0024] The present application will be further described below with reference to the drawings and specific embodiments, but is not limited by the present application.

[0025] Specific embodiment one: the present embodiment will be described below. Figures 1 to 6 The gas self-excitation quick cut-off valve for a light gas gun comprises a box body with two open ends, a buffer locking magnetic block 1, a rotating shaft 2, a cut-off plate 5, a gas self-excitation plate 6, a rib plate 4, and the like.

[0026] The box body is enclosed by a top plate 3, a bottom plate 7, and two side plates 10, and the two open ends of the box body are respectively a projectile inlet and a projectile outlet.

[0027] Two rotating shafts 2 are symmetrically arranged in the middle section of the two side plates of the box body, and the rotating shafts 2 are rotationally connected with the top plate 3 and the bottom plate 7; a cut-off plate 5 and a gas self-excitation plate 6 connected at right angles are fixed to each rotating shaft 2, the cut-off plate 5 is arranged at the projectile inlet side, the gas self-excitation plate 6 is arranged at the projectile outlet side, and each gas self-excitation plate 6 has a semicircular notch.

[0028] The top plate 3, the bottom plate 7, and the two side plates 10 of the box body on the projectile inlet side are provided with a plurality of exhaust holes 11 with the two rotating shafts 2 as boundaries; the two side plates 10 of the box body on the projectile outlet side are symmetrically provided with buffer locking magnetic blocks 1 for locking the gas self-excitation plate 6, and one or two buffer locking magnetic blocks 1 are arranged on each side plate 10. The buffer locking magnetic blocks 1 are realized by permanent magnets, and the magnetic properties of the permanent magnets are realized by switches. The switch refers to a permanent magnet switch, which is a prior art.

[0029] Referring toFigure 2 , initial position, two gas self-excitation plate 6 and two half round hole synthesis hole, for the body through; the body carrying high-speed gas into the channel in the box of the valve, gas self-excitation plate 6 under the impact of high-speed gas rotating shaft 2 to the body outlet side fast rotation, into Figure 3 the intermediate state shown in the figure, the intermediate state, the two sides of the symmetrical gas self-excitation plate 6 is rotated to the body out side, and carries the synchronous rotation of the intercepting plate 5, two intercepting plate 5 from the original parallel to the side plate state to the side plate vertical state, into Figure 4 the final state shown in the figure, the final state, two intercepting plate 5 close to the box inside the channel, high-speed gas into the box is intercepted, high-speed gas from the exhaust hole 11 of each plate. After the gas interception link, the projectile will carry a little gas to the test target, greatly reducing the impact of high-speed gas on the target.

[0030] the final state, the use of buffer locking magnetic block 1 of the magnetic properties of the gas self-excitation plate 6 lock, prevent the gas self-excitation plate 6 spring, when the test is completed, the use of switch to close the buffer locking magnetic block 1 of the magnetic properties, release gas self-excitation plate 6, restore to Figure 2 the initial position shown in the figure.

[0031] Referring to Figure 5 and Figure 6 , when the transient loading experiment is carried out, the end of the launch tube of the light gas gun 200 (light gas gun or air gun is applicable) is provided with a light gas gun expansion chamber 300, the projectile 600 passes through the light gas gun expansion chamber 300 and is measured by the laser speedometer 400, and then enters the target chamber 500. The target chamber 500 is provided with a target holder 700, and the projectile 600 loads force to the target through the target holder 700 to realize transient loading. Two gas self-excitation rapid intercepting valves 100 are arranged in sequence along the direction of flight of the projectile at the first end and the last end of the light gas gun expansion chamber 300. The first end gas self-excitation rapid intercepting valve 100 intercepts high-speed gas, a small part of the high-speed gas enters the last end gas self-excitation rapid intercepting valve 100, and the last end gas self-excitation rapid intercepting valve 100 further intercepts high-speed airflow, thereby maximizing the impact of high-speed airflow (which also has the characteristics of high temperature and high pressure) of the light gas gun on the loaded target.

[0032] Specific implementation method two: the implementation method two further limits the implementation method one, and the implementation method two further comprises a intercepting plate position adjusting unit 9. Two side plates 10 on the box on the projectile inlet side are symmetrically provided with the intercepting plate position adjusting unit 9, and the intercepting plate position adjusting unit 9 is used to adjust the initial angle of the intercepting plate 5.

[0033] The intercepting plate position adjusting unit 9 is realized by a screw rod, and the initial angle of the intercepting plate 5 is adjusted by the depth of the screw rod.

[0034] The initial angle a of the initial position of the intercepting plate 5 is adjusted by the intercepting plate position adjusting unit 9, the deeper the screwing depth is, the larger the initial angle a is, and as the initial angle a increases, the intercepting valve reacts faster when the projectile carries high-speed gas into it, that is, the time needed for the two intercepting plates 5 to close is less. The size of the initial angle a is adaptively adjusted according to the speed of the projectile and the pressure of the gas, and the specific value is obtained by limited experiments.

[0035] While the application has been described with reference to particular embodiments thereof, it should be understood that these are merely illustrative of the principles and applications of the application. It will thus be appreciated that numerous modifications can be made to the illustrative embodiments and that other arrangements can be devised without departing from the spirit and scope of the application as defined by the appended claims. It will be understood that the features of the various embodiments can be combined with each other, where appropriate. It will also be understood that features described with respect to one embodiment can be used in other embodiments.

Claims

1. A gas self-energizing quick shut-off valve for a light gas gun, characterized in that, The utility model relates to a kind of gas flow control valve, including two ends open box, rotating shaft (2), intercepting plate (5) and gas self-excitation plate (6); The box is enclosed by top plate (3), bottom plate (7) and two side plates (10), and the two ends of the box are open respectively as projectile inlet and projectile outlet. Two rotating shafts (2) are symmetrically arranged in the middle section of the two side plates of the box, and the rotating shafts (2) are rotatably connected with the top plate (3) and the bottom plate (7). Each rotating shaft (2) is fixedly connected with a straightly connected intercepting plate (5) and a gas self-excitation plate (6). The intercepting plate (5) is arranged on the projectile inlet side, and the gas self-excitation plate (6) is arranged on the projectile outlet side. Each gas self-excitation plate (6) has a semicircular notch. With the two rotating shafts (2) as boundaries, the top plate (3), the bottom plate (7) and the two side plates (10) of the box on the projectile inlet side are provided with a plurality of exhaust holes (11). In the initial position, the two gas self-excitation plates (6) are folded together, and the two semicircular notches are combined into a circular hole for the projectile to pass through. The projectile carrying high-speed gas enters the intercepting valve, and the gas self-excitation plate (6) rotates rapidly around the rotating shaft (2) to the projectile outlet side under the impact of high-speed gas, until the two intercepting plates (5) are folded together to block the passage in the box, and the high-speed gas is intercepted, and the high-speed gas is redirected to be discharged from the exhaust holes (11) of each plate.

2. The gas self-energating quick closing valve for light gas gun according to claim 1, wherein, It also includes a buffer locking magnetic block (1), and symmetrically arranged on the two side plates (10) of the box on the projectile outlet side with the two rotating shafts (2) as boundaries, the buffer locking magnetic block (1) is used for locking the gas self-excitation plate (6). Each side plate (10) is provided with one or two buffer locking magnetic blocks (1).

3. The gas self-energating quick closing valve for light gas gun according to claim 2, wherein, The buffer locking magnetic block (1) is realized by a permanent magnet, and the magnetic property of the permanent magnet is realized by a switch.

4. The gas self-energating quick-exhaust valve for a light gas gun according to claim 1, wherein It also includes an intercepting plate position adjusting unit (9), and symmetrically arranged on the two side plates (10) of the box on the projectile inlet side with the two rotating shafts (2) as boundaries, the intercepting plate position adjusting unit (9) is used for adjusting the initial angle of the intercepting plate (5).

5. The gas self-energating quick-exhaust valve for a light gas gun according to claim 4, wherein The intercepting plate position adjusting unit (9) is realized by a screw rod, and the initial angle of the intercepting plate (5) is adjusted by the screwing depth of the screw rod.

6. The gas self-energating quick-exhaust valve for a light gas gun according to claim 1, wherein It also includes a rib plate (4), and two rib plates (4) are arranged between the intercepting plate (5) and the gas self-excitation plate (6) fixedly connected on the same rotating shaft (2).

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