KR101529514B1

KR101529514B1 - Gas supply apparatus

Info

Publication number: KR101529514B1
Application number: KR1020140062467A
Authority: KR
Inventors: 이성배; 김지원; 이상규; 최의중; 이건하
Original assignee: 국방과학연구소
Priority date: 2014-05-23
Filing date: 2014-05-23
Publication date: 2015-06-17

Abstract

The present invention provides a gas turbine comprising a body portion having a first flow path through which a cooling gas flows and a second flow path through which a combustion gas flows, at least a part of which is inserted into the first flow path, A gas supply unit, a ignition unit for introducing the combustion gas generated by burning the propellant into the second flow path, and a second ignition unit configured to divide the first and second flow paths, to be slidable by the combustion gas, And a front end portion formed to cut at least a part of the gas pipe inserted into the first flow path by the first gas flow path and the second gas flow path to prevent the impurities in the second flow path from being mixed with the cooling gas, The front end portion maintains a state in which the first and second flow paths are isolated from each other so as to flow into the first flow path through the gas pipe, Cooling gas supply device, characterized in that the mobile node.

Description

[0001] GAS SUPPLY APPARATUS [0002]

The present invention relates to a cooling gas supply device in which the inflow of contaminants into a flow path of a cooling gas is interrupted.

In the cooling gas supply device for supplying the cooling gas to an arbitrary external device, various components for preventing the cooling gas from leaking to the outside of the flow path are provided on the flow path through which the cooling gas flows. In addition, various kinds of impurities may be included in the channel in the process of assembling the cooling gas supplying device.

If the cooling gas to be supplied to the external device is required to have a high purity cooling gas so that only the impurities of a few ppm or less are contained, impurities such as oil and moisture that may be present on the flow path It may be difficult to expect normal operation of the external device.

Therefore, development of a cooling gas supply device capable of preventing impurities from mixing on the flow path through which the cooling gas flows, and effectively removing air components present on the flow path can be considered.

An object of the present invention is to provide a cooling gas supply device capable of preventing impurities from permeating into a flow path through which cooling gas flows, and discharging impurities existing on the flow path to the outside.

According to an aspect of the present invention, there is provided a cooling gas supply apparatus including a body portion including a first flow path through which a cooling gas flows and a second flow path through which a combustion gas flows, A gas supply part having a gas pipe partly inserted into the first flow path and filled with the cooling gas, a ignition part for introducing the combustion gas generated by burning the propellant into the second flow path, And a front end portion that is configured to be slidable by the combustion gas and configured to slidably cut at least a part of the gas pipe inserted into the first flow path by the sliding movement, In order to prevent the impurities in the second flow path from being mixed with the cooling gas, To flow into the first flow path, the front end portion holding a state in which the isolated first and second flow paths, and the slide is moved.

According to one embodiment of the present invention, the front end includes a sealing member which is disposed in the first flow path and is disposed to seal the inner circumference of the second flow path, can do.

According to another embodiment of the present invention, the body portion is formed with a first hole communicating with the inside of the second flow path, and the front end portion is slid by the combustion gas to cut at least a part of the gas pipe And a gas discharge hole formed to communicate with the first hole in a state that the first hole communicates with the first hole.

According to another embodiment of the present invention, the front end portion is slidably moved by the combustion gas so as to be pressed by the cooling gas when cutting at least a part of the gas pipe, And a second hole communicating with at least a part of the gas pipe to provide a discharge passage for the cooling gas.

According to another embodiment of the present invention, the body portion has a housing space for accommodating at least a part of the gas supply portion, and the gas supply portion may be formed to seal the accommodation space.

Wherein the cooling gas supply device includes a connection pipe connected to the inside of the first flow path so as to discharge the cooling gas inside the first flow path to the outside, a purifying pipe connected to the accommodation space to communicate with the accommodation space, And a purge gas supply unit for injecting a purge gas through the purge pipe so as to discharge foreign substances in the accommodation space through the connection pipe.

According to another embodiment of the present invention, the body includes a stopper slidably moved by the combustion gas so as to restrict movement of the front end portion and capable of engaging an end portion of the front end portion in a state where at least a part of the gas pipe is cut off can do.

The present invention is configured such that the cooling gas flowing into the first flow path is kept isolated from the second flow path by the front end portion, thereby effectively preventing the impurities in the second flow path from penetrating into the inside of the first flow path .

Further, the purity of the cooling gas flowing into the first flow path can be further increased by discharging the impurities or the air component remaining in the first flow path to the outside through the connection pipe.

In addition, since the combustion gas generated from the igniter through the gas discharging hole is discharged to the outside of the body portion and the amount of the combustion gas remaining in the second flow path is reduced, the amount of the impurities penetrating into the first flow path is further reduced .

1 is a cross-sectional view illustrating a cooling gas supply apparatus according to an embodiment of the present invention;
FIG. 2A is a conceptual view showing a state before the slide of the front end portion shown in FIG.
FIG. 2B is a conceptual view showing a state in which the front end portion shown in FIG. 1 slides and cuts a part of the gas pipe.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a cooling gas supplying apparatus of the present invention will be described in detail with reference to the accompanying drawings.

In the present specification, the same or similar reference numerals are given to different embodiments in the same or similar configurations. As used herein, the singular forms "a", "an" and "the" include plural referents unless the context clearly dictates otherwise.

FIG. 1 is a sectional view showing a cooling gas supplying apparatus 100 according to an embodiment of the present invention. FIG. 2 (a) is a conceptual view showing a state before sliding the front end 140 shown in FIG. 1, FIG. 11 is a conceptual diagram showing a state in which the front end 140 shown in FIG. 1 slides and cuts a part of the gas pipe 122.

1 and 2B, a cooling gas supply apparatus 100 according to an embodiment of the present invention includes a body 110, a gas supply unit 120, an ignition unit 130, and a front end 140 do.

The body 110 has a first flow path 112 through which a cooling gas flows and a second flow path 114 through which a combustion gas flows. The cooling gas flows into the first flow path 112, and then flows into the external device 10 using the cooling gas. At this time, if the cooling gas is mixed with impurities and flows into the external device 10, malfunction of the external device 10 may occur. The combustion gas is in a gaseous state at a high temperature and a high pressure. For example, the external device 10 may be a searcher that performs a function of searching for an object.

The gas supply unit 120 includes a gas pipe 122 at least a part of which is inserted into the first flow path 112 and is formed to fill the closed internal space with the cooling gas. The gas pipe (122) is configured to communicate the internal space with the first flow path (112).

The ignition part 130 is configured to communicate the combustion gas with the second flow path 114 so as to generate the combustion gas by burning the propellant and to introduce the combustor into the second flow path 114. For example, the propellant may be formed in a solid or liquid state, and may be made to generate the combustion gas as it is burned by an ignition device (not shown).

The front end portion 140 is configured to partition the first and second flow paths 112 and 114 and to be slidable by the combustion gas so as to cut at least a part of the gas pipe 122. More specifically, the front end portion 140 is disposed between the first flow path 112 and the second flow path 114 so as to be slidable on the first and second flow paths 112 and 114. At this time, when the combustion gas of high temperature and high pressure is generated from the ignition part 130, one side is pressurized by the combustion gas and slides toward the first flow path 112. At least a part of the gas pipe 122 inserted in the first flow path 112 is cut in a state closed by the slide movement so that the cooling gas filled in the gas supply part 120 flows into the first And flows into the flow path 112. At this time, the area of the interior of the first flow path 112 and the flow path of the second flow path 114 changes according to the sliding movement of the front end portion 140. For example, the inner area of the first flow path 112 is reduced as the front end portion 140 is slid relative to the front end portion 140 before the front end portion 140 is slid by the combustion gas.

The combustion gas and impurities contained in the second flow path 114 are accommodated in the second flow path 114. The cooling gas supply device 100 may be configured to allow the cooling gas to flow to the first flow path 112 through the cut gas pipe in order to prevent the impurities in the second flow path 114 from mixing with the cooling gas. The front end portion 140 is slid while keeping the first and second flow paths 112 and 114 isolated. Accordingly, the first flow path 112 through which the cooling gas flows through the gas pipe 122 is kept isolated from the second flow path 114 containing the impurities, so that the high purity of the cooling gas is maintained, The operation performance of the external device 10 can be further improved.

Meanwhile, the front end 140 may include a sealing member 142.

The sealing member 142 is provided so as to seal the inner circumference of the second flow path 114 and is not disposed in the first flow path 112. The sealing member 142 has a hole through which fluid such as gas or liquid can pass. A lubricant applied to the surface of the sealing member 142 is assembled to the body 110 in order to improve the lubrication and durability of the sealing member 142, While the first flow path 112 is always kept isolated from the second flow path 112, the contamination of the cooling gas by the sealing member 142 can be prevented. The sealing member 142 may be disposed on the second flow path 114 as shown in FIG.

Meanwhile, the body 110 may include a first hole 116 communicating with the interior of the second flow path 114. Specifically, the first hole 116 is formed in a state where the front end portion 140 is slid by the combustion gas to cut at least a part of the closed gas pipe 122, and the combustion gas is supplied to the outside of the body portion 110 . Accordingly, the amount of the combustion gas accommodated in the second flow path 114 is reduced, thereby reducing the amount of the combustion gas that can be introduced into the first flow path 112. As a result, the purity of the cooling gas can be further improved.

Meanwhile, the front end 140 may include a second hole 146.

The front end portion 140 is slid by the combustion gas to cut at least a part of the closed gas pipe 122. At this time, the front end portion 140 may be pressurized by the cooling gas discharged from the gas pipe 122 while cutting the gas pipe 122, resulting in a distortion between the first and second flow paths 112 and 114. The second hole 146 is communicated with at least a part of the cut gas pipe 122 to provide a discharge passage for the cooling gas. Thus, after the front end 140 is slid into the combustion gas as shown in FIG. 2A, at least a part of the gas pipe 122 is cut as shown in FIG. 2B, and then the gas pipe 122 The cooling gas can be discharged through the second hole 146 communicated with the front end portion 140, thereby preventing the front end portion 140 from being deformed.

The body 110 has an accommodation space for accommodating at least a part of the gas supply part 120. The gas supply part 120 is formed to surround the inner circumference of the accommodation space 120 to prevent the cooling gas from leaking through the accommodation space. So as to seal the accommodation space.

The cooling gas supply apparatus 100 may further include a connection pipe 150, a purge pipe 160, and a purge gas supply unit 170.

The connection pipe 150 is connected to the inside of the first flow path 112 to discharge the cooling gas inside the first flow path 112 to the outside. The connection pipe 150 is connected to the external device 10 as shown in FIG. 1 so that the cooling gas of the first flow path 112 flows into the external device 10.

The purifying pipe 160 is formed to be connected to the accommodation space so as to communicate with the accommodation space.

The purge gas supply unit 170 may inject purge gas through the purge pipe 160 to discharge the first flow path 112 and the foreign material inside the accommodation space to the outside. Specifically, air components including moisture and some contaminants may be present inside the first flow path 112 isolated from the second flow path 114 and inside the accommodation space. The amount of moisture and contaminants contained in such an air component is relatively small, but this may cause a decrease in the purity of the cooling gas.

The purge gas supply unit 170 generates a purge gas for purifying the first flow path 112 and the accommodation space and introduces the purge gas into the purge pipe 160. The purge gas flowing into the purge pipe 160 flows And flows into the first flow path 112 through the clearance space of the body portion 110 into which the gas pipe 122 is inserted together with the contaminants, (150). Also, the purifying gas may be composed of a group including at least one of an inert gas such as argon, neon, or helium.

On the other hand, the body 110 is slidably moved by the combustion gas so as to restrict the movement of the front end, so that at least a part of the gas pipe 122 is cut and the stopper 118, . &Lt; / RTI >

On the other hand, the cooling gas supply device 100 may further include a front end pin 144. The shear pin 144 is inserted at least partly through a hole formed at one side of the front end portion 140 to limit the movement of the front end portion 140. The front end pin 144 is disposed on the front end portion 140, And may be made to release the movement limitation of the front end portion 140 as it is broken by the movement. The front end portion 140 can be fixed at a position spaced from the gas pipe 122 by a predetermined distance in a state before the combustion gas is generated from the ignition portion 130. [ Therefore, the movement distance necessary for cutting the front end portion 140 to the gas pipe 122 is sufficiently secured, so that the gas pipe 122 can be cut more reliably.

However, the scope of the present invention is not limited to the configuration and method of the embodiments described above, and all or some of the embodiments may be selectively combined so that various modifications may be made to the embodiments. In addition, the present invention can be applied to all equivalents of inventions, such as inventions that can be modified, added, deleted, or replaced at the level of those skilled in the art, It belongs to the scope is self-evident.

100: cooling gas supply device 110:
120: gas supply unit 130: ignition unit
140: front end portion 150: connection piping
160: purifying pipe 170: purifying gas supply part

Claims

A body portion having a first flow path through which the cooling gas flows and a second flow path through which the combustion gas flows;
At least a part of which is inserted into the first flow path, and the inside of which is filled with the cooling gas;
An ignition part for introducing the combustion gas generated by burning the propellant into the second flow path; And
A front end portion configured to divide the first and second flow paths and configured to be slidable by the combustion gas and configured to cut at least a part of the gas pipe inserted into the first flow path by the slide movement and,
The front end of the cooling gas may flow into the first flow path through the cut gas pipe in order to prevent impurities in the second flow path from mixing with the cooling gas, And the slide member is slidably moved while maintaining the state of the cooling gas.

The method according to claim 1,
Characterized in that the front end portion comprises a sealing member which is provided to seal the inner circumference of the second flow path and which is not disposed in the first flow path, Device.

The method according to claim 1,
Wherein the body portion includes a first hole communicating with the inside of the second flow path so that the combustion gas is discharged to the outside in a state in which the front end portion is slid and at least a part of the gas pipe is cut off Gas supply.

The method according to claim 1,
Wherein the front end portion is slidably moved by the combustion gas to cut at least a part of the gas pipe to communicate with at least a part of the cut gas pipe so as to be prevented from being pressurized by the cooling gas, And a second hole for providing a discharge passage of the cooling gas.

The method according to claim 1,
Wherein the body portion has an accommodation space for accommodating at least a part of the gas supply portion,
Wherein the gas supply part is formed to seal the accommodation space.

6. The method of claim 5,
A connection pipe connected to the inside of the first flow path to discharge the cooling gas inside the first flow path to the outside;
A purifying pipe connected to the accommodation space to communicate with the accommodation space; And
Further comprising a purge gas supply unit for injecting a purge gas through the purge pipe so as to discharge foreign substances in the first flow path and the accommodation space through the connection pipe.

The method according to claim 1,
Wherein the body portion includes a stopper capable of engaging an end portion of the front end portion with the front end portion being slid by the combustion gas so as to restrict movement of the front end portion and cutting at least a part of the gas pipe.

The method according to claim 1,
And a shear pin inserted into one side of the front end to limit movement of the front end,
Wherein the front end fin is configured to release the movement limitation of the front end portion as the front end portion is broken due to the sliding movement of the front end portion.