KR100445681B1 - a - Google Patents

Abstract

The present invention provides a cryogenic mechanical release valve that is responsible for the separation between the projectile and the support during launch and leakage from the scientific research / exploration rocket and the launch vehicle for satellite launch to the connection with the ground support system of the liquid oxygen line. It is about.

Because it is used in rockets and projectiles, it is free of merchandise and is specifically designed for use in rockets.

This valve is used for injecting and discharging propellant into the rocket, and the internal flow path is configured the same as the pipe flow path to ensure a clear separation at launch. The internal cryogenic graphite is used to maintain the airtightness, and after the valve is installed, it is checked for leakage of propellant which may occur if propellant is injected. By installing a leakage blocking bolt, it is always configured to make repairs. At launch, the valve used a mechanical release to smoothly disconnect the connection between the projectile and the ground support. The separation is 100% above a certain force.

Accordingly, the present invention is provided with an internal packing tightening device capable of flowing the fluid without leakage of the fluid during the injection and discharge of the cryogenic fluid, and to ensure the tightness of the valve in the situation that the fluid is filled against possible leakage And

In order to guarantee 100% separation where the separation should be 100%, such as projectiles, the valve is connected by a mechanical coupling method using elasticity of the metal and forced release by a certain force.

Description

Mechanical release valve for cryogenic propellant {a}

The present invention provides a cryogenic mechanical release valve that is responsible for the separation between the projectile and the support during launch and leakage from the scientific research / exploration rocket and the launch vehicle for satellite launch to the connection with the ground support system of the liquid oxygen line. It is about.

The role of the valve, which is conventionally used as a propulsion engine component of a rocket and a satellite projectile, is responsible for the injection / discharge of cryogenic propellant and is configured to separate the projectile from the ground support system during launch.

The valve designed for this reason is a one-time mechanical release valve designed to be separated by a pulling force with a constant force in a completely mechanical forced release.

Existing methods used in other rockets use the same mechanical escape method, but as shown in FIGS. 5 and 6, a protrusion is formed between the projectile body 1 'and the ground body 2', and the metal plate 13 from the outside. After the separation of the projectile body (1 ') and the ground body (2') by using a part of the metal plate 13 is broken by using a breaking force that can be used only once and can not be reused. It cannot be used for rockets with small thrust force.

The present invention is responsible for the injection / discharge of cryogenic propellants as components of the propulsion engines of rockets and satellite launch vehicles, so in any case, the internal airtight structure must be completely configured so that there is no leakage of cryogenic propellants and replacement of valves for repair after installation. And a tightening device inside the valve to catch the leak in a simple way when the valve leaks to perform without repair.

The present invention is configured to allow separation between the projectile and the ground support equipment during launch.

Valves designed for this reason are designed to be separated by a constant pulling force in a fully mechanical force release, ensuring 100% separation.

1 is a cross-sectional view of the assembled mechanical release valve of the present invention

Figure 2 is a state of mechanical release valve separation of the present invention

Figure 3 is a side view of the connecting member of the present invention

Figure 4 is a cross-sectional view of the connecting member of the present invention

Figure 5 is a cross-sectional view before separating conventional mechanical breakaway parts

6 is a cross-sectional view of the conventional mechanical separation after separation

[Explanation of symbols for the main parts of the drawings]

1, 1 ': projectile body 2, 2': ground body

3: connecting member 3 ': engaging projection

4: Thread for space keeping 5, 11: Packing

6: proximity sensor 7, 8: bracket

9: locknut 10: rocker

12: packing bolt 13: metal plate

17: coupling groove 20: protrusion

20 ': incision

As shown in FIG. 1, the valve is configured to be divided into a projectile body 1 and a ground body 2, and has a shape in which the projectile body 1 is fitted to the ground body 2.

When the valve is connected to the projecting body 1 and the ground body 2 by the gap-sealing chamber 4 of the Kel-F structure, the inner airtightness of the valve is made due to the pressing by a suitable force.

The connecting body 11 and the ground body 2 are connected to the packing 11 is configured.

This is used for secondary hermeticity when the primary hermetic seal is not provided by Kel-F type gap-maintaining seal 4 and there is leakage of the valve when the valve is used for a long time. 12), the packing 11 can be pressed to eliminate leakage.

This can catch the leak without replacing the valve and changing parts, which can reduce the cost.

The packing (5) is installed in a triple to prevent in advance the problem that may occur when using one packing. The packing (5) is pressed by the packing (11) by tightening the packing bolt 12 to prevent leakage. It is.

The connecting member 3, which is responsible for the connection and mechanical separation of the valve, is configured together with the rocket body 1, and the connection is pushed up and fixed to the jig so that the one fixed is separated only by a certain force or more.

3 and 4, the connecting member 3 has a protrusion 20 protruding to one side, and installs cutouts 20 'at regular intervals, and has a round coupling protrusion 3' inside the protrusion 20. ) Is formed.

Therefore, the protrusions 20 are cut by the incisions 20 'at regular intervals so that the coupling protrusions 3' of the protrusions 20 can be easily opened to the outside when the protrusions are coupled, and after the opening, the restoring force is generated and coupled. The groove 17 is firmly assembled.

In addition, when the projecting body 1 and the ground body 2 are applied to each other in the opposite direction during separation, the protrusion 20 is opened by the incision 20 'and the engaging protrusion 3' is coupled to the coupling groove ( 17).

It is a one-time configuration and cannot be reused by the deformation of the connecting member 3 after one use, and guarantees 100% operation of the valve when used only once.

That is, as shown in Figure 2 when the projectile body (1) and the ground body (2) is separated from each other by pushing the coupling member 3 and the coupling groove (17) installed in the projectile body (1), the assembly member The engaging projection 3 'formed in the projection 20 of (2) is assembled to the engaging groove 17.

In addition, the bracket 7 of the rocket for fixing the valve is fixed by a high information bolt 16 for catching the processing part installed in the body 1 for the projectile, and the bracket of the ground part can be held by the ground bracket ( 8) is fixed to the rocker 10 is installed to help the separation of the valve when the valve is separated.

Proximity sensor (6) of the valve installed to one side of the connecting member (3) is installed to check whether the valve is separated by monitoring the valve at a long distance.

The operation method is to check the connection signal of the valve from a long distance when the lamp and power are connected when the valve is close.

At the time of separation, the proximity sensor 6 moves away from the bracket 7 and the lamp and the power are boiled to confirm the separation.

The present invention is configured to maintain the inner space seal and packing for cryogenic, double leak-tight structure to prevent leakage, and to prevent leakage in the cryogenic fluid filled state by tightening the bolt of the valve when leakage occurs. It is used to inject / exhaust cryogenic propellants of rockets.

The present invention implements a mechanical forced release method to ensure 100% separation between the rocket and the ground support equipment at launch.

Therefore, the present invention is used for the injection / discharge of cryogenic and general propellant in the rocket and to ensure 100% separation between the ground support facilities of the projectile by a mechanical forced release method.

Claims (4)

In the valve to fill and discharge the cryogenic fluid inside the pipe, Body (1) for the projectile and the engaging groove 17 is formed on the outside, A ground body (2) coupled to the projectile body (1) and installing the packing (11) by a packing bolt (12); The lock nut 9 is coupled to the ground body 2 and the protrusion 20 protrudes to one side to form a coupling protrusion 3 ′ therein, and the cutout 20 'to one side of the protrusion 20. Cryogenic mechanical release valve, characterized in that consisting of a connecting member (3) formed. The cryogenic mechanical release valve according to claim 1, wherein the ground body (2) is installed in a double structure by an internal space maintaining chamber (4) and a packing (5) installed in the packing (11). . delete The cryogenic mechanical release valve according to claim 1, wherein the connection member (3) has a proximity sensor (6) installed on one side thereof to check whether the connection member is separated by a distance from the bracket (7).