JPH0351744A - High-pressure gas injection mechanism - Google Patents

Abstract

PURPOSE:To release a valve body completely in a short time by slightly moving a sliding valve on the surface of a cone whose upper part is cut. CONSTITUTION:A cylinder 34 is energized with air pressure, and a piston rod is moved rightward. A sliding valve 28 is linearly moved rightward. A surface 29 of a cone whose upper part is cut is provided in the valve 28. The surface 29 is moved to positions where a plurality of gas introducing holes 24 of an injection path 26 are provided. Therefore, the holes 24 are slightly opened. Part of high pressure gas in a gas-pressure increasing chamber 22 escapes through the holes 24. Pushing force in the axial direction is made to act on the surface 29. Therefore, the valve 28 is linearly moved rightward quickly against a compressing spring 38. All the holes 24 are completely opened. Namely, the partially released gas pressure acts on the entire valve 28 only by slightly opening the holes 24, and the valve 28 is slidden rightward at a very high speed. Thus all the holes 24 are opened instantaneously in one motion. The released high pressure gas launches a flying body 76 of a loading mechanism 12 with a large amount of energy.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is suitable for use in a launcher that uses a sublimable object such as dry ice as a flying object and flies this projectile at high speed under the jet action of high-pressure gas. This relates to the high pressure gas injection mechanism used.

PRIOR ART Objects that fly through space at high speed, such as bullets, shells, and rockets fired from firearms, cannons, etc.

Generally, it can be referred to as a "high-speed flying object." These high-speed flying objects are often used primarily for military purposes, but when the flying object flies at high speed and collides with some object, the large amount of energy released is By properly controlling this, peaceful use is fully possible. Therefore, the projectile is loaded into a launcher, and the projectile is driven at high speed by the recoil from the explosion of gunpowder, the powerful injection pressure of high-pressure gas, and other electrical repulsion forces, and collides with the desired object. Attempts to analyze the physical properties of objects have already been put into practical use at the experimental stage.

In a launcher that causes the flying object to fly at high speed.

When using high-pressure gas as the driving source, the gas is temporarily stored under extremely high pressure in a closed space, and the high-pressure gas is released all at once in a short period of time to provide the entire energy to the projectile. It needs to work effectively.

Problems to be Solved by the Invention In order to release high-pressure gas stored in a closed space all at once,
Generally, it is necessary to use a valve body as a release means and operate it in a very short period of time to fully open a passage hole that has been blocked by the valve body. However, the higher the gas pressure, the more strongly the valve body is pressed against the valve seat, so it is difficult to open the valve body in a short time, and a time lag inevitably exists. do. If there is a time lag when opening the valve body, the energy held by the high-pressure gas will be gradually released when observed microscopically, and therefore the high energy will be used intensively to launch the projectile. The shortcomings of not being able to do so are pointed out.

By the way, the present inventors have proposed a launch system based on a new concept that uses a sublimable object such as dry ice made of solidified carbon dioxide gas as a flying object, instead of using a flying object that is generally made of a metal material. The launch system, which was proposed and developed, and for which a patent application was filed on the same date as the present application, flies a projectile made of the sublimable object at high speed under the jet action of high-pressure gas, and sends it to the target object. The idea is to accomplish a required physical task by placing your elbow on the body. In this case, since the flying object loaded into the launch system is sublimable and has an extremely low temperature as described above, a conventional high-pressure gas injection mechanism that fires a metal flying object under the action of gas injection is used. cannot be put to practical use as it is.Also, when launching a projectile of a sublimable object by a gas jet action, the high-pressure gas mentioned above is instantly released all at once, and all of the high energy is released into the projectile. It must be said that the demand for effective use for the launch of nuclear weapons is even greater.

Purpose of the Invention The present invention is directed to a high-pressure gas injection mechanism used in the above-mentioned sublimable flying object launch system, in which a part of the gas pressure is released by slightly moving a valve body that confines high-pressure gas in a closed space. To provide a novel gas injection mechanism capable of rapidly fully opening the valve body and releasing high-pressure gas at once by simply acting on the valve body, and effectively using the high energy to launch the projectile. purpose.

Means for Solving the Problems In order to overcome the above-mentioned problems and suitably achieve the intended purpose, the present invention applies jet pressure of high-pressure gas to a flying object made of a sublimable object such as dry ice. A high-pressure gas injection mechanism used in a launcher that launches a flying object from a launch tube at high speed, and includes an annular gas boosting chamber that receives a supply of high-pressure gas from the outside and temporarily stores the gas in a pressurized state; a gas injection path extending axially through the center of the annular gas pressurizing chamber and coaxially communicating with the launch tube via the projectile loading mechanism; a plurality of gas introduction holes that are bored in the gas injection path and extend in the radial direction and communicate with the gas injection path; and an actuator that applies linear movement in the axial direction to the sliding valve, and the sliding valve has a sliding valve that is connected to the actuator to perform linear movement. It is movably inserted and held in a position to close the gas introduction hole under the action of a compression coil spring elastically interposed between the sliding valve and the operating rod.

By slightly applying gas pressure to the sliding valve, it moves along the operating rod while resisting the elasticity of the compression coil spring,
The present invention is characterized in that all of the gas introduction holes are configured to open instantly.

Embodiments Next, a preferred embodiment of the high-pressure gas injection mechanism according to the present invention will be described below with reference to the accompanying drawings.

In this example, the material of the sublimable flying object is dry ice made by solidifying carbon dioxide gas into a cylindrical shape, and an inert gas, especially nitrogen gas, is used as the driving source for the flying object. . This is due to the large amount of cold energy released when reducing liquefied natural gas (LNO) to room temperature gas.
This is because dry ice can be produced in large quantities by cooling and solidifying carbon dioxide, which is a by-product of the petrochemical industry and ammonia industry, and nitrogen gas, which is a by-product of the LNG industry, can also be effectively used. Therefore.

The field of application of the present invention is not necessarily limited to the use of dry ice or nitrogen gas.

FIG. 1 shows a partially cutaway perspective view of a high-pressure gas injection mechanism according to a preferred embodiment of the present invention, and is located upstream of the projectile loading mechanism 12 and the launch tube 66 provided in the launch system shown in FIG. This is an enlarged view of the mechanism main body 10. Figure 7 shows an application of the above-mentioned sublimation projectile launch system to an apparatus for destructive testing of various samples. A shock absorption chamber 70 is provided behind the chamber 68.

The launching system loads the dry ice flying object 76 shown in FIG. It is caused to fly from the launch tube 66 by pressure and collide with, for example, a sample (not shown) stored in a sample storage chamber 68 to perform a required work.

Returning to FIG. 1, the high-pressure gas injection mechanism 10 according to the embodiment is connected to the loading mechanism 12 of the flying object 76 (this mechanism also has remarkable technical features, so a separate patent application has been filed as of today). It is provided.

The high-pressure gas injection mechanism 10 includes an annular gas pressurization chamber 22 that pressurizes and stores high-pressure gas supplied from the outside, and a gas injection passage 26 that passes through the center of the gas pressurization chamber 22 and communicates with the firing tube 66. , a plurality of gas introduction holes 24 that are bored at predetermined intervals around the gas pressurization chamber 22 and communicate with the gas injection path 26; 24 (plurality) at the same time, and an actuator 34 such as a pneumatic cylinder that imparts linear motion to the slide valve 28.

That is, the thick-walled high-pressure gas conduit 20 extends coaxially through the center of the large-diameter steel cylinder 14, and also passes through the centers of the pair of circular side plates 16, 16 in a tight fit. These circular side plates 16.16.

Closely close the openings at both ends of the cylindrical body 14.

The required locations are tightened and fixed by tightening bolts 18. A ring-shaped seal body 52 is disposed between each side plate 16 and the high-pressure gas conduit 20 and the cylindrical body 14, and the inner circumferential surface of the cylindrical body 14, the outer circumferential surface of the high-pressure gas conduit 20, and the inner surface of each side plate 16 An annular gas pressurization chamber 22 is defined. A gas injection hole 56 is bored in one side plate 16,
Through the nipple valve 58 provided in this gas injection hole 56,
As will be described later, high pressure nitrogen gas is supplied to the gas pressurization chamber 22. The nipple valve 58 is connected to a pressure booster 62 via a gas conduit 60, which booster 62 is connected to a nitrogen gas cylinder 64.
It is connected to the.

A cylindrical gas injection passage 26 is formed in the center of the high pressure gas conduit 20 and extends in the longitudinal direction.
One opening is closed by a main body 40, which will be described later, and the other opening communicates with one opening of the flying object loading mechanism 12. A cylindrical lining 46 made of a metal with high corrosion resistance and pressure resistance is tightly fitted into the gas injection passage 26 . Further, as is clear from FIG. 1 and especially FIG. 3, the high-pressure gas conduit 20 is provided with a plurality of gas introduction holes 24 at predetermined intervals in the local direction, and these gas introduction holes 24 are arranged in the radial direction. Extending the annular gas pressurization chamber 2
2 and the gas injection path 26 are spatially communicated with each other.

A slide valve 28 is provided in the gas injection path 26 of the high-pressure gas conduit 20 so as to be able to move forward and backward in the axial direction, and closes and closes the plurality of gas introduction holes 24 opened at predetermined intervals in the circumferential direction. It is possible to open. That is, the sliding valve 28 has an inner surface of the lining 46 that is tightly fitted into the gas injection passage 26.
It is composed of a cylindrical body that is slidably inserted tightly through a sealing body 30, and as shown in FIG. 2 and FIG. ,
As shown in FIG. 6, it can be moved between a position where all of the gas introduction holes 24 are completely opened. The distal end of the slide valve 28 facing toward the loading mechanism 12 is tapered in the circumferential direction to form a truncated conical surface 29.

The sliding valve 28 is linearly driven by a required actuator 34, such as the illustrated hydraulic cylinder. That is, as shown in FIG.

A main body 40 made of a cylindrical block member is removably inserted and fixed into the rear end of the high-pressure gas conduit 20, so that it can close one end of the gas injection path 26.

By operating a handle 44, the main body 40 can be rotated between a locked position where it is screwed and fixed to the rear end of the high pressure gas conduit 20 and an unrotter position where it is removed.

For example, a double-acting pneumatic cylinder 34 is provided at the outer rear end of the main body 40, and the piston rod 4 of the cylinder
2 is connected to one end of an actuating rod 36 whose axis is aligned with the gas injection passage 26 as shown in FIG. The operating rod 36 is slidably inserted into a holding member 32 fixed to the main body 40 on the gas injection path side, and is also slidably inserted into the center of the slide valve 28. .

The operating rod 36 inserted into the slide valve 28 has a locking plate 74 at its end, and the locking plate 74 restricts forward axial movement of the slide valve 28 . However, the sliding valve 2
8 is for the operating rod 36.

The axial movement in the direction opposite to the side where the locking plate 74 is provided can be freely performed.

In this case, as shown in FIG. 2, a compression coil spring 38 is fitted onto the cylindrical holding member 32, one end of which is brought into contact with the inner surface of the main body 40, and the other end of the spring is placed against the inner surface of the main body 40. It is brought into elastic contact with the right end portion of the valve train 28. The compression coil spring 38 normally urges the slide valve 28 leftward to a position where it is regulated by the locking plate 74 in FIG.

However, as will be described later, the truncated conical surface 29 of this sliding valve 28
If even a small amount of gas pressure is applied to the gas pressure, the compression coil spring 38 is compressed by the gas pressure, allowing the slide valve 28 to move to the right in the axial direction.

Note that the positional relationship between the slide valve 28 and the gas introduction hole 24 is such that the piston rod 42 of the fluid pressure cylinder 34 is in an extended and biased state.

The sliding valve 28 is elastically biased by the compression coil spring 38 and its movement is restricted at the position where the locking plate 74 is disposed, thereby closing all the plurality of gas introduction holes 24. Also, the pneumatic cylinder 34 is energized, and the piston rod 4
2 moves rightward in FIG. 2, the truncated conical surface 29 of the slide valve 28 is positioned in advance so that it approaches the open position of the gas introduction hole 24.

As shown in FIGS. 1 and 2, the high-pressure gas conduit 20 is penetrated with an exhaust hole 48 that communicates with the gas injection path 26, and the exhaust hole 48 is provided with an exhaust valve 50. This is for evacuating the gas injection path 26 and the loading mechanism 12 by connecting a vacuum pump (not shown) to the exhaust valve 5o when preparing to launch the projectile.

Function of the Embodiment Next, the function of the high-pressure gas injection mechanism according to the present embodiment configured as described above will be explained. In use, the loading mechanism 1
2 is loaded with a flying object 76 made of dry ice, and the gas injection path 26 and loading mechanism 12 are degassed by driving a vacuum pump (not shown) connected to the exhaust valve 50. In the destructive testing apparatus shown in FIGS. 7 and 8, the launch tube 66, sample storage chamber 68, and shock absorption chamber 70 are simultaneously degassed, and the interior of the entire system is maintained at a high vacuum.

As shown in FIGS. 2 and 4, in a standby state in which the pneumatic cylinder 34 is not operated, the slide valve 28 is regulated to a position that closes all gas introduction holes 24. Therefore, the inside of the annular gas pressurization chamber 22 is completely sealed, and nitrogen gas is injected into the gas pressurization chamber 22 via the nipple valve 58 and the injection hole 56. Note that the nitrogen gas
As shown in the figure, a portable gas cylinder 64 is filled, and after being pressurized via a booster 62, a gas conduit 60 is
It is supplied to the nipple valve 58 through the.

A large amount of nitrogen gas is stored in the gas pressurization chamber 22 at a sufficiently high pressure, and when the required pressure filling is completed, the sliding valve 28 is operated to release the high pressure gas all at once, causing it to fly into the loading mechanism 12. It will act on the body 76. That is, by pneumatically biasing the cylinder 34, the piston rod 42
is moved linearly to the right in FIG. As a result, the actuating rod 36 connected to the rod 42 moves the sliding valve 28 linearly to the right, as shown in FIG.
The truncated conical surface 29 of the gas injection path 26 is caused to reach the opening position of the plurality of gas introduction holes 24 formed in the gas injection path 26. Therefore, the gas introduction hole 24 is slightly opened, and the gas pressurization chamber 22
A part of the high pressure gas temporarily stored in the gas introduction hole 24
This causes a pressing force in the axial direction to be applied to the truncated conical surface 29 of the sliding valve 28. Therefore, the slide valve 28 rapidly moves linearly to the right along the operating rod 36 against the compressive elasticity of the compression coil spring 38, completely opening all the gas introduction holes 24, as shown in FIG. do.

Therefore, the high pressure gas in the gas pressurization chamber 22 is
6 will be released all at once.

That is, when the slide valve 28 is biased to the right and its truncated conical surface 29 slightly opens the gas introduction hole 24, the partially released gas pressure is applied to the entire slide valve 28. This results in a very high speed drive to the right. Therefore, all of the gas introduction holes 24 are instantly opened at once, and the released high-pressure gas has a large amount of energy and acts directly on the flying object 76 loaded into the loading mechanism 12, pushing the flying object 76 into the firing tube 66. Fire it at high speed. In the example shown in FIG. 7, the flying object 76 collides with a large amount of energy against the sample stored in the sample storage chamber 68, causing destruction or other physical work.

DETAILED DESCRIPTION OF THE INVENTION As described in detail, the high-pressure gas injection mechanism according to the present invention blows a flying object made of a sublimable object such as dry ice at high speed by using a large injection pressure of high-pressure gas released in an extremely short period of time. It can be fired with. In other words, by just slightly moving the valve element installed in the injection mechanism, a portion of this high-pressure gas instantly forcibly moves the valve element in the opening direction, which causes The valve body can be completely opened in a very short time, and the concentrated energy of the released gas can be effectively used for launching a projectile.

Although the illustrated embodiment is applied to a test device that analyzes the physical properties of an object by colliding a high-speed projectile with a sample, this sublimation projectile launcher itself is suitable for this purpose. It is not limited and can be applied to various fields. Furthermore, as mentioned above, the sublimating flying object is not limited to dry ice, and high-pressure gases other than nitrogen may also be used.

Various inert gases such as helium, other hydrogen gases, etc. can be selected and used depending on economic reasons and other factors, as long as they do not affect the human body.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing a preferred embodiment of the high-pressure gas injection mechanism according to the present invention, FIG. 2 is a longitudinal cross-sectional view of the firing mechanism shown in FIG. 1, and FIG. 4, 5, and 6 are horizontal cross-sectional views taken along the line ■-■ in the figure. FIGS. 7 is an overall side view of the destructive test equipment using the high-pressure gas injection mechanism according to this embodiment, and FIG. 8 is a plan view of the destructive test equipment shown in FIG. 7. 0... High-pressure gas injection mechanism 2... Flying object loading machine side 4... Gas inlet hole 8... Sliding valve 6... Working field 6... Launch tube 2... Annular gas pressure increase Chamber 6... Gas injection path 4... Actuator 8... Compression coil spring 6... Flying object

Claims (1)

[Claims] A launcher that applies jet pressure of high-pressure gas to a flying object (76) made of a sublimable object such as dry ice, and fires the flying object (76) from a launch tube (66) at high speed. The high-pressure gas injection mechanism (10) used in
extending axially through the center of the launch tube (22);
66) and a gas injection path (26) that coaxially communicates with the projectile loading mechanism (12) via the projectile loading mechanism (12), and the annular gas pressurization chamber (22).
) are provided at predetermined intervals in the circumferential direction, extending in the radial direction and communicating with the gas injection path (26)
24), a slide valve (28) disposed in the gas injection path (26) so as to be able to move forward and backward in the axial direction, and that always closes the plurality of gas introduction holes (24) at the same time; The slide valve (28) includes an actuator (34) that applies a linear motion in the axial direction to the slide valve (28), and the slide valve (28) has an actuating rod (36) that is connected to the actuator (34) to perform the linear motion. The gas introduction hole (2) is slidably inserted into the gas introduction hole (2) under the action of a compression coil spring (38) elastically interposed between the slide valve (28) and the operating rod (36).
4) is held in the closing position, and by slightly applying gas pressure to the sliding valve (28), it moves along the operating rod (36) while resisting the elasticity of the compression coil spring (38). A high-pressure gas injection mechanism characterized in that it is configured to instantly open all of the gas introduction holes (24).