KR100920666B1 - Pyro valve - Google Patents

Abstract

PURPOSE: A pyro valve is provided to transfer at high speed and opened by passing fluid of bulk according to an electric signal. CONSTITUTION: A guide hole is formed inside a body(100) along upward and downward. A first through hole(120) and a second through hole(130) connected with a guide hole(110) are formed at the side part of the body. A first ferrule(300) is combined and is inserted in the first through hole. A first end part of the first ferrule is connected with the guide hole and is sealed and a second end part is opened. A second ferrule(400) is combined in and is inserted in the second through hole. A piston(500) is arranged in and moves up and down within a guide hole and has a fluid transfer hole to help fluid to move. An igniter(200) is installed on a body. The first ferrule and the second ferrules are connected through the fluid transfer hole.

Description

Pyro valve

The present invention relates to a pyro valve, and more particularly to a pyro valve for controlling the opening and closing of the fluid.

In general, rocket systems are divided into solid fuel rockets and liquid fuel rockets, depending on the nature of the fuel. Among them, rocket systems that use liquids, or fluids, as fuels have the characteristics of mixing the liquid oxidant and fuel and burning them at high temperature and high pressure in the combustion chamber to generate thrust.In the case of large engines, hundreds of tons of fuel are burned in just a few minutes. In this case, the fluid flow rate is enormous. In addition, oxidizing agents usually use liquid oxygen at minus one hundred and tens of degrees, and lower temperatures are applied to the system when liquid hydrogen is used. In addition, reliability should not be a problem under adverse conditions, and even if it is a problem in operation, it should not lead to dangerous situations.

In order to determine the rough requirements based on these characteristics, it is first necessary to have stable physical / chemical properties that can withstand various extreme conditions such as cryogenic and high corrosiveness. Secondly, the loss of equipment and systems must be low enough to allow the fluid to flow in large quantities and the necessary flow rate must be provided. Third, the device must be very fast and fully open within 0.01 seconds at the latest to ensure a stable flight of the rocket. This is one of the most important conditions for rockets taking off from launch pads because if the thrust increases slowly, the initial flight speed is too slow to allow stable flight. Fourth, even if it satisfies all of these in terms of economics, it should not be too expensive, difficult to obtain, difficult to handle and manage, and the weight problem is very important due to the characteristics of the rocket system. Therefore, the system must be compact and excellent in terms of weight, maintenance and economy.

A ball valve is used as a valve currently used in a rocket, but the ball valve is somewhat satisfactory in reliability, but has a problem that it is difficult to apply except for a large rocket because of its heavy weight, low operating speed, and large volume.

SUMMARY OF THE INVENTION An object of the present invention is to provide a pyro valve which opens a fluid at high speed by allowing a large amount of fluid to flow in accordance with an electrical signal.

The present invention, the guide hole is formed in the vertical direction therein, the body is formed with a first through hole and a second through hole communicated to the guide hole on the side, and coupled to be inserted into the first through hole, the guide The first end connected to the hole is sealed, the second end is coupled to be inserted into the open first joint pipe, the second through hole, the first end connected to the guide hole is sealed, and the second end Is an open second joint pipe, a piston disposed in the guide hole so as to be movable in a vertical direction, and having a fluid transfer hole formed therein for transporting fluid, and installed in the body and exploding when an electric signal is input from the outside. While impacting the piston to lower the piston, the piston cuts the first end of the first joint pipe and the first end of the second joint pipe to open in a sealed state, and then Provided is a pyro valve including a igniter to allow the first joint pipe and the second joint pipe to communicate with each other through the fluid transfer hole.

At this time, the first cutting groove and the second cutting groove are formed to be recessed around the outer peripheral surface adjacent to each of the first end of the first joint pipe and the second joint pipe, so that the piston is the first of the first joint pipe When the end and the first end of the second joint pipe are hit, each sealed first end of the first joint pipe and the second joint pipe is easily cut by the first cutting groove and the second cutting groove. can do.

The first joint pipe and the second joint pipe are screwed to the first through hole and the second through hole, respectively, and the first joint pipe, the first through hole, the second joint pipe and the The contact surface to which the second through hole is coupled has a tapered shape in which longitudinal cross-sections correspond to each other, and the first joint pipe and the second joint pipe and the body are formed to have different hardness from each other, so that the first joint pipe and the second joint pipe are different from each other. When a joint pipe is screwed into the first through hole and the second through hole, the hardness of the threads of the first joint pipe, the first through hole, the second joint pipe and the second through hole is relatively low. As the threads are partially agglomerated, the fluid may be sealed so as not to leak to the outside through the first joint pipe and the first through hole and between the second joint pipe and the second through hole.

In addition, the first through hole and the second through hole is formed in a position opposite to each other, the piston, the upper body portion is formed with the fluid transfer hole, and integrally extends to the lower side of the upper body portion, respectively on both sides And a lower body having a first recess and a second recess, wherein the first end of the first joint and the first end of the second joint are respectively the first recess and the second recess. And the first end of the first joint pipe and the first end of the second joint pipe collide with the side wall of the first recessed part and the side wall of the second recessed part as the piston descends. The cutting part of the first joint pipe and the cutting part of the second joint pipe may be disposed to face each other with the fluid transfer hole interposed therebetween.

The apparatus further includes a first taper portion formed in a portion of the inner side of the body and having a tapered shape in a longitudinal cross section, and a second taper portion formed outside the piston and having a tapered shape in a longitudinal cross section. The body and the body are formed to be different in hardness from each other, the piston is lowered by the igniter to blow open the first end of the first joint pipe and the first end of the second joint pipe, and at the same time, the piston When the second taper portion of the contact with the first taper portion of the body, it can be fixed while being embedded in a relatively weak hardness.

In the pyro valve according to the present invention, when an electrical signal is input to the ignition device, the piston cuts the sealed first ends of the first and second joint pipes by the pressure generated by the ignition explosion. Therefore, the first ends of the first joint pipe and the second joint pipe can be opened in a sealed state so that the fluid can be transported at high speed through the first joint pipe, the fluid transfer hole of the piston, and the second joint pipe.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a pyro valve according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of FIG. 1, and FIG. 3 is a cross-sectional view taken along line III-III of FIG. 1. 1 to 3, the pyro valve includes a body 100, a igniter 200, a first joint pipe 300, a second joint pipe 400, and a piston 500. .

The body 100 is disposed between the connection line (not shown) for transporting the fluid, and is connected to the connection line.

Inside the body 100, guide holes 110 are formed along the vertical direction. The piston 500, which will be described later, is installed in the guide hole 110 to be movable in the vertical direction. In addition, a portion of the inner portion of the body 100, that is, a portion of the guide hole 110 may have a first tapered portion having a tapered shape in a longitudinal cross section so that the piston 500, which will be described later, is locked in a lowered state. 111). In addition, the upper end of the body 100 is provided with a cover 150 for opening and closing the guide hole 110. Here, reference numeral 800 denotes that the explosion pressure of the igniter 200 to be described later through the cover 150 and the body 100 when the cover 150 is coupled to the body 100 to the outside. Sealing member that seals to prevent leakage.

In addition, a first through hole 120 and a second through hole 130 are formed at side surfaces of the body 100 so as to communicate with the guide hole 110 so that the fluid can be discharged after inflow. Here, the first through hole 120 and the second through hole 130 are formed at positions opposite to each other so as to reduce the time to be discharged after the fluid is introduced, when transferring the fluid of the connection line. . Here, the body 100 according to an embodiment is shown that each of the first through-hole 120 and the second through-hole 130 is formed after the fluid is introduced and discharged, but is not limited to this body Of course, the number can be changed and applied according to the position where the 100 is disposed.

In addition, at least one connection hole 140 may be formed on the side surface of the body 100 to install the igniter 200 to be described later. The connection hole 140 is formed to communicate with the guide hole 110.

The first joint pipe 300 and the second joint pipe 400, each of the first end is inserted into each of the first through hole 120 and the second through hole 130 of the body 100 It is coupled to, the second end is a pipe member respectively connected to the connecting line. As such, the first joint pipe 300 and the second joint pipe 400 allow the body 100 to be connected to the connection line through which the fluid is transferred. Here, each first end of the first joint pipe 300 and the second joint pipe 400 is sealed, each second end has an open shape to communicate with the connection line.

In addition, each first end of the first joint pipe 300 and the second joint pipe 400 is screwed into the first through hole 120 and the second through hole 130 of the body 100, respectively. Combined. Referring to FIG. 3, a first through hole 120 of the first fitting pipe 300 and the body 100 and a second through hole of the second fitting pipe 400 and the body 100 ( The contact surface 130 is screwed, is formed so that the longitudinal cross-section has a tapered shape corresponding to each other. As such, the first joint pipe 300 and the second joint pipe 400 are coupled to the body 100 by a tapered surface, so that the fluid is connected to the first joint pipe 300 and the first through hole 120. ) And between the second joint pipe 300 and the second through hole 130 to be prevented from being transferred, thereby preventing the fluid from leaking more stably. In addition, the first joint pipe 300 and the second joint pipe 400 are formed to have different hardness from the body 100. Therefore, when the first joint pipe 300 and the second joint pipe 400 are coupled to the first through hole 120 and the second through hole 130, respectively, the first joint pipe 300 And a taper surface of which the hardness is relatively low among the tapered surfaces of the first through hole 120, the second joint pipe 400, and the second through hole 130. 300 and sealed between the first through hole 120 and the second joint pipe 400 and the second through hole 130 to prevent leakage to the outside. Here, when the first joint pipe and the second joint pipe are screwed into the first through hole and the second through hole, the first joint pipe, the first through hole, the second joint pipe and the first Among the threads of the two through holes, the threads of relatively low hardness are partially agglomerated, so that the fluid is screwed to the first joint pipe, the first through hole, the second joint pipe, and the second joint hole. Do not leak outside.

In addition, a first cutting groove 310 and a second cutting groove 410 are formed to be recessed around an outer circumferential surface adjacent from each first end of the first fitting pipe 300 and the second fitting pipe 400. . Therefore, when the piston 500 to be described later strikes the first end of the first joint pipe 300 and the first end of the second joint pipe 400, the first cutting groove 310 and the Each sealed first end of the first joint pipe 300 and the second joint pipe 400 may be easily cut and opened by the second cutting groove 410.

The piston 500 is disposed to be movable in the vertical direction in the guide hole 110 of the body 100. Such, the piston 500 is lowered by the pressure generated during the explosion while the electrical signal is input to the igniter 200 to be described later, the first end of the first joint pipe 300 and the second joint pipe Hit the first end of 400 to be cut open.

Referring to FIG. 4, the piston 500 includes an upper body portion 510 and a lower body portion 520. Here, the lower body portion 520 is lowered by the igniter 200 to be described later in the upper body portion 510, the first end of the first joint pipe 300 and the second joint pipe ( When cutting open by hitting the first end of the 400, the fluid transfer hole 511 is formed so that the fluid can be transferred. In addition, the lower body portion 520 is formed to extend in a lower state of the upper body portion 510. Here, the first recessed portion 521 and the second recessed portion 522 are formed at both side portions of the lower body portion 520, respectively. The first end of the first joint pipe 300 and the first end of the second joint pipe 400 are positioned in the first recess 521 and the second recess 522. Therefore, as the piston 500 descends, the first end of the first joint pipe 300 and the first end of the second joint pipe 400 are first recessed parts of the lower body part 520. 521 is cut by hitting the side wall and the side wall of the second recess 522. As such, the cut open end of the first joint pipe 300 and the cut open end of the second joint pipe 400 by the upper body part 510 may be fluid transfer holes of the upper body part 510. 511 is disposed to face each other with the interposed therebetween. In addition, a second taper portion 512 having a tapered shape in a longitudinal cross section may be formed at a lower end of the upper body portion 510 of the piston 500.

In addition, the upper body portion 510 of the piston 500 is formed to be different in hardness from the inside of the body 100. Therefore, the piston 500 is lowered by the igniter 200 to hit the first end of the first joint pipe 300 and the first end of the second joint pipe 400 to cut open and At the same time, when the second taper portion 512 of the upper body portion 510 is in contact with the first taper portion 111 of the body 100, the second taper portion 512 is fixed to the relatively weak side. As such, in the state where the fluid is transportable through the body 100, the piston 500 and the body 100 are fixed to each other so that the fluid is transported through the fluid transfer hole 511. When the piston 500 is prevented from being pushed upward by the pressure generated at the time, a stable fluid transfer is possible. Here, reference numeral 530 denotes a sealing member that is extrapolated to the upper body 510 to seal the fluid from leaking between the body 100 and the upper body 510.

The igniter 200 is exploded when an electrical signal is input from the outside, the pressure generated to impact the piston 500 to cause the piston 500 is lowered. One end of the igniter 200 is inserted into and installed to correspond to the connection hole 140 of the body 100. As such, the igniter 200 causes the piston 500 to cut the first end of the first joint pipe 300 and the first end of the second joint pipe 400 to the first joint. After opening the first end of the pipe 300 and the second joint pipe 400 in the sealed state, respectively, the first joint pipe 300 and the second joint pipe 400 is the fluid transfer hole 511 allows the fluid to be conveyed while in communication with each other. Here, reference numeral 700 denotes a sealing member that seals the fluid so as not to leak through the igniter 200 and the connection hole 140 when the igniter 200 is coupled to the body 100.

The igniter 200 may be an electric igniter that is generally used as a gas generator for an air bag. The igniter 200 may be operated by an electric signal to explode and generate shock waves or generate pressure while injecting gas into the piston ( The impact is applied to the 500) to descend.

Referring to FIGS. 1 to 4, the pyro valve operation according to the exemplary embodiment having the above configuration will be described.

First, the fluid may be transferred from the first joint pipe 300 to the second joint pipe 400 or from the second joint pipe 400 to the first joint pipe 300. In an embodiment, an operation for transferring the fluid from the first joint pipe 300 to the second joint pipe 400 will be described.

Therefore, in the usual state, the fluid is not transferred until the electrical signal is input through the igniter 200 in a state in which it is supplied to the first fitting pipe 300 through the connection line.

Subsequently, when the fluid supplied to the first joint pipe 300 is required to be rapidly transported through the connection line through the second joint pipe 400, an electrical signal is input to the igniter 200. .

Then, the pressure generated while the igniter 200 explodes impacts the piston 500 to lower the piston 500. As such, the descending piston 500 hits the first end of the first joint pipe 300 and the first end of the second joint pipe 400, respectively, the first cutting groove 310 and the first cutting groove. The second cutting groove 410 is cut based on the first end of the first joint pipe 300 and the first end of the second joint pipe 400 to be in an open state in a sealed state.

Therefore, the fluid that has been transferred to the first joint pipe 300 has the first end of the first joint pipe 300 and the first end of the second joint pipe 400 open and at the same time. It is introduced into the guide hole 110 of the body 100 through the fitting pipe 300, and is rapidly transferred to the second fitting pipe 400 through the fluid transfer hole 511 of the piston 500. Thereafter, the fluid transferred to the second joint pipe 400 is transferred to a necessary place through the connection line.

As described above, in the pyro valve according to the embodiment, when the electrical signal is input to the igniter 200, the piston 500 is caused by the pressure generated when the igniter 200 explodes. The sealed first end of the joint pipe 300 and the second joint pipe 400 is cut at a price. Accordingly, the first ends of the first joint pipe 300 and the second joint pipe 400 are opened in a sealed state, so that the fluid is in the fluid of the first joint pipe 300 and the piston 500. The air hole 511 may be transported at a high speed through the second joint pipe 400.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims.

1 is a perspective view of a pyro valve according to an embodiment of the present invention.

2 is an exploded perspective view of FIG. 1.

3 is a cross-sectional view taken along line III-III of FIG. 1.

4 is an enlarged perspective view of the piston shown in FIG. 2.

<Brief description of symbols for the main parts of the drawings>

100: body 110: guide hole

120: first through hole 130: second through hole

140: connector 200: igniter

300: first joint pipe 310: first cutting groove

400: second joint pipe 410: second cutting groove

500: piston 510: upper body portion

511: fluid transfer hole 520: lower body

521: first depression 522: second depression

Claims (5)

A guide hole is formed in an up and down direction, and a body having a first through hole and a second through hole communicating with the guide hole at a side thereof; A first joint pipe coupled to the first through hole, the first end being connected to the guide hole, and the second end being opened; A second joint pipe coupled to the second through hole and connected to the guide hole, the first end being sealed and the second end being opened; A piston disposed in the guide hole so as to be movable in a vertical direction and having a fluid transfer hole formed therein so that the fluid can be transferred; And, It is installed in the body, when the electrical signal is exploded when input from the outside, impact the piston to lower the piston, the piston is the first end of the first joint pipe and the first end of the second joint pipe And a igniter for cutting the cost, allowing the first and second joints to communicate with each other through the fluid transfer hole after opening the valve in a sealed state. The first joint pipe and the second joint pipe are respectively screwed into the first through hole and the second through hole, The contact surface to which the first joint pipe and the first through hole, and the second joint pipe and the second through hole are coupled, has a tapered shape in which longitudinal cross sections correspond to each other, The first joint pipe and the second joint pipe and the body are formed with different hardness from each other, When the first joint pipe and the second joint pipe are screwed to the first through hole and the second through hole, the first joint pipe and the first through hole and the second joint pipe and the second through hole Among the threads of the ball, the thread of which the hardness is relatively low is partially aggregated so that the fluid does not leak to the outside through the first joint pipe and the first through hole and between the second joint pipe and the second through hole. Pyro valve. A guide hole is formed in an up and down direction, and a body having a first through hole and a second through hole communicating with the guide hole at a side thereof; A first joint pipe coupled to the first through hole, the first end being connected to the guide hole, and the second end being opened; A second joint pipe coupled to the second through hole and connected to the guide hole, the first end being sealed and the second end being opened; A piston disposed in the guide hole so as to be movable in a vertical direction and having a fluid transfer hole formed therein so that the fluid can be transferred; And, It is installed in the body, when the electrical signal is exploded when input from the outside, impact the piston to lower the piston, the piston is the first end of the first joint pipe and the first end of the second joint pipe And a igniter for cutting the cost, allowing the first and second joints to communicate with each other through the fluid transfer hole after opening the valve in a sealed state. The first through hole and the second through hole is formed in a position facing each other, The piston, An upper body part in which the fluid transfer hole is formed; It is integrally extended to the lower side of the upper body portion, and includes a lower body portion is formed in each of the first recessed portion and the second recessed portion, The first end of the first joint pipe and the first end of the second joint pipe are coupled so as to be located in the first depression and the second depression, respectively, As the piston descends, the first end of the first joint pipe and the first end of the second joint pipe collide with the side wall of the first recessed portion and the side wall of the second recessed portion, and are cut. A pyro valve disposed so that the cut portion of the joint pipe and the cut portion of the second joint pipe face each other with the fluid transfer hole therebetween. A guide hole is formed in an up and down direction, and a body having a first through hole and a second through hole communicating with the guide hole at a side thereof; A first joint pipe coupled to the first through hole, the first end being connected to the guide hole, and the second end being opened; A second joint pipe coupled to the second through hole and connected to the guide hole, the first end being sealed and the second end being opened; A piston disposed in the guide hole so as to be movable in a vertical direction and having a fluid transfer hole formed therein so that the fluid can be transferred; It is installed in the body, when the electrical signal is exploded when input from the outside, impact the piston to lower the piston, the piston is the first end of the first joint pipe and the first end of the second joint pipe A igniter for cutting the price to open in a sealed state, and then allowing the first and second joint tubes to communicate with each other through the fluid transfer hole; And A first taper portion formed in a portion of the inside of the body and having a tapered shape in a longitudinal cross section, and a second taper portion formed outside the piston and having a tapered shape in a longitudinal cross section, The piston and the body are formed to be different in hardness from each other, The piston is lowered by the igniter to strike open the first end of the first joint pipe and the first end of the second joint pipe, and at the same time, the second taper of the piston is the first taper of the body. Pyro valve that is fixed while being stuck to the side with relatively low hardness when it comes in contact with the part. The method according to any one of claims 1 to 3, The first cutting groove and the second cutting groove are formed to be recessed around the outer peripheral surface adjacent to each of the first end of the first and second joint pipes, When the piston strikes the first end of the first joint pipe and the first end of the second joint pipe, the first joint pipe and the second joint pipe are formed by the first cutting groove and the second cutting groove. Pyro valve, each sealed first end of the cut easily. The method according to claim 2 or 3, The first joint pipe and the second joint pipe are respectively screwed into the first through hole and the second through hole, The contact surface to which the first joint pipe and the first through hole, and the second joint pipe and the second through hole are coupled, has a tapered shape in which longitudinal cross sections correspond to each other, The first joint pipe and the second joint pipe and the body are formed with different hardness from each other, When the first joint pipe and the second joint pipe are screwed to the first through hole and the second through hole, the first joint pipe and the first through hole and the second joint pipe and the second through hole Among the threads of the ball, the thread of which the hardness is relatively low is partially aggregated so that the fluid does not leak to the outside through the first joint pipe and the first through hole and between the second joint pipe and the second through hole. Pyro valve.

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