KR20200107378A - Emergency release coupling - Google Patents

Abstract

Provided is an emergency separation coupling, which prevents the inside through which a fluid flows while pipes or hoses connected to each other are quickly separated from each other when an emergency situation is generated. The emergency separation coupling includes: a pair of couplers formed in a cylindrical pipe shape, coming in contact with each other to communicate with each other, and connecting two pipes through which the fluid is moved; a clamp of which one end portion is hinge-coupled for the clamp to be formed in a ring shape and which surrounds and fixes a bonding surface of the pair of couplers; a preventing part including a support plate hinge-coupled into the couplers to be rotated around a hinge part and an expansion part adhering to the support plate to be arranged in the couplers by being folded and allowing gas to be injected thereinto to prevent the inside of the coupling when the clamp is separated; a gas injection part including a gas storage part storing the compressed gas therein and connected to the expansion part and a valve connected between the gas storage part and the expansion part to control the compressed gas injected into the expansion part; and a locking part including a locking pin penetrating into the bonding surface and inserted into the hinge part to restrict rotation of the support plate and a first elastic member interposed between the locking pin and the couplers to allow the locking pin to protrude from the bonding surface to the outside.

Description

Emergency release coupling {Emergency release coupling}

The present invention relates to an emergency detachable coupling, and relates to an emergency detachable coupling capable of quickly separating pipes or hoses connected to each other in the event of an emergency situation and at the same time blocking the interior through which fluid flows.

In general, cargoes such as oil, gas, and petrochemical are stored in a storage tank of a ship in liquid or gas form and transported to a demand area or other areas. Two lines of flexible hose or rigid loading arm are joined together to load and unload cargo stored in the tank, and couplings are used for this. The coupling connects hoses or pipes for unloading cargo, and in the event of excessive load, traction, and tension, or in an emergency situation, the hose or pipe can be separated to prevent equipment damage.

As described above, couplings for connecting hoses or pipes are largely divided into three types: full bore ball valves, flip flap valves, and shuttle valves. The full bore ball valve has the advantage of low pressure drop, but the valve opening speed is slow and heavy and difficult to handle due to its large size, and there is a problem of relatively large torque. On the contrary, the flip flap valve has the advantage of quick valve opening speed, light weight and ease of handling, but has a disadvantage of high pressure drop. In addition, the shuttle valve has a fast response speed and a simple structure, which is advantageous for maintenance and sealing, but also has a disadvantage of high pressure drop. Therefore, in order to compensate for the disadvantages of the existing type valve and make use of the advantages, the pressure drop is low, the structure is made of a small and light structure, and the response speed is fast, so that the hose or pipe is quickly separated to prevent equipment damage, and cargo leakage There was a need for a structure of a coupling that can minimize the phenomena.

Republic of Korea Patent Registration No. 10-1649796, (2016.09.26.)

The technical problem to be achieved by the present invention is to solve this problem, and relates to an emergency detachable coupling capable of quickly separating pipes or hoses connected to each other in case of an emergency situation and blocking the interior through which fluid flows.

The technical problem of the present invention is not limited to the above-mentioned problems, and another technical problem that is not mentioned will be clearly understood by those skilled in the art from the following description.

The urgently detachable coupling according to the technical problem of the present invention is formed in a cylindrical tubular shape and in contact with each other to communicate with each other, and a pair of couplers connecting between two pipes through which a fluid moves, and one end is hinged to form a ring shape. , A clamp surrounding and fixing the bonding surface of the pair of couplers, a support plate that is hinged to the inside of the coupler and rotates around the hinge, and is placed in close contact with the support plate and folded to the inside of the coupler, and when the clamp is separated A blocking unit including an expansion unit that blocks the inside of the coupler by injection of gas into the interior, a gas storage unit storing a compressor body therein and connected to the expansion unit, and a gas storage unit connected between the gas storage unit and the expansion unit A gas injection unit including a valve for controlling the compressor body injected into the expansion unit, a locking pin penetrating through the bonding surface and inserted into the hinge to limit the rotation of the support plate, and between the locking pin and the coupler It is interposed and includes a locking portion including a first elastic member protruding the locking pin to the outside of the bonding surface.

The expansion part is interposed between the support plate and the inner surface of the coupler, and when the compressor body is injected, the support plate may be pushed and rotated.

The valve includes a valve housing in which a conduit connecting the gas storage unit and the expansion unit is formed, and moves in a longitudinal direction to open and close the conduit, and one end is supported by the clamp and the other end is elastic force toward the clamp. Including a valve piston that is supported by a second elastic member that transmits energy, when the clamp is separated from the coupler, the valve piston moves and the compressor body may be injected into the expansion unit.

The locking pin may be supported on the bonding surface of another coupler in contact with each other to compress the first elastic member.

It may further include a fixing part that locks the clamp and fixes it to the coupler, and releases the clamp by an external signal.

The expander may receive compressed gas from the gas storage and expand in a disc shape so that the diameter is greater than or equal to the inner diameter of the coupler.

The emergency detachable coupling according to an embodiment of the present invention can connect a hose or pipe to unload a cargo, and when a tensile force or an excessive load is applied during unloading of the cargo, the hose or pipe can be quickly separated to prevent a secondary accident. I can. In particular, the present invention can prevent damage to equipment by separating the hose or pipe and blocking the inside at the same time, and minimizing the phenomenon of leakage of cargo.

1 is a perspective view of an emergency detachable coupling according to an embodiment of the present invention.
2 is an exploded perspective view showing a part of an emergency detachable coupling according to an embodiment of the present invention.
3 is a cross-sectional view of FIG. 2 taken along line AA.
FIG. 4 is an enlarged view of a part of FIG. 3.
FIG. 5 is an operation diagram showing an operation process of the blocking part, the gas injection part, and the locking part of FIG. 4.
6 is a cross-sectional view of FIG. 2 taken along line BB.

Advantages and features of the present invention and methods for achieving them will become apparent with reference to the embodiments described below in detail together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in a variety of different forms. However, these embodiments are intended to complete the disclosure of the present invention, and those skilled in the art to which the present invention pertains. It is provided to fully inform the scope of the invention to the person, and the invention is only defined by the claims. The same reference numerals refer to the same elements throughout the specification.

Hereinafter, an emergency detachable coupling according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 6.

The emergency detachable coupling 1 of the present invention is a connecting device for connecting and disconnecting a hose or pipe capable of unloading cargo by allowing fluid to flow therein. The emergency detachable coupling 1 of the present invention has a simple structure, so that a hose or a pipe can be easily and quickly connected and disconnected, and in the event of an emergency situation, it is possible to quickly cope with the occurrence of an accident. In addition, according to the present invention, it is possible to quickly separate the hose or pipe and block the internal flow path, thereby preventing the leakage of cargo. Hereinafter, it will be described in detail.

An emergency detachable coupling of the present invention will be generally described with reference to FIG. 1, and each component will be described in detail with reference to FIGS. 2 to 4, and the operation process of each component and After a detailed description in relation to, referring to FIG. 6, the blocking portion is unfolded and the pipe is closed by the operation of FIG. 5 to be described in detail.

1 is a perspective view showing an emergency detachable coupling according to an embodiment of the present invention.

Referring to FIG. 1, the emergency detachable coupling 1 of the present invention includes a pair of couplers 10a and 10b respectively connected to separate pipes (not shown), and a pair of couplers 10. It is in close contact with the clamp 20 for connecting and separating the bonding surface 21, the support plate 31 and the support plate 31 that are rotatably coupled to the inside of the couplers 10a, 10b to block the inside of the coupler 10. It includes a blocking part 30 including an expansion part 32, a gas injection part 40 for injecting gas into the expansion part 32, and a locking part 50 that restricts rotation of the support plate 31. .

Specifically, the coupler 10 connects two pipes separated from each other through which a fluid moves, and is formed in a cylindrical tube shape with open ends and an empty space therein. The coupler 10 is arranged so that one end of the pair is in contact with each other and communicates with each other, and the other end of the coupler 10 is coupled to each other to connect a pair of separated pipes. The coupler 10 has a bonding surface (refer to 21 in FIG. 3) formed at one end facing each other, and a pair of bonding surfaces 21 are in contact with each other or are separated to connect and separate a pair of pipes. . The coupler 10 may be completely coupled and separated by a clamp 20 disposed to surround the outer peripheral surface of one end.

The clamp 20 is a coupling member for completely fixing and separating the pair of couplers 10, and one end of the pair of semicircular shapes is hinged to each other to form a ring shape so as to be rotatable about the hinge axis. The clamp 20 is disposed so as to surround the bonding surface 21 of the pair of couplers 10 and has one end coupled to each other to connect one end of the pair of couplers 10. At this time, the clamp 20 may be connected and disconnected by the operation of the fixing part (not shown). The fixing part locks the clamp 20 to fix it to the pair of couplers 10, and the clamp ( 20) can be fixed and released. Accordingly, the clamp 20 may be separated from the bonding surface 21 by rotating around a hinge axis (not shown) by the operation of the fixing unit to separate the pair of couplers 10. The fixing part may be made of various driving members for coupling and separating one end of the clamp 20, and a detailed description thereof will be omitted.

On the other hand, as described above, the coupler 10 is each coupled to a pair of pipes and is disposed so that the bonding surfaces 21 face each other, and the pair of pipes can be connected or separated from each other by the clamp 20 . In particular, the coupling 1 can quickly separate the pair of couplers 10 in the event of an emergency situation, thereby preventing an accident. In addition, when the coupler 10 is separated, the coupling 1 is a block to prevent leakage of fluid inside the coupler 10 to prevent leakage of fluid flowing inside the pipe and the coupler 10. Arrange the part 30.

The blocking part 30 opens and closes the inner space of the coupler 10 to block the flow path of the fluid flowing inside the pipe. The blocking portions 30 are respectively installed inside the pair of couplers 10, and this will be described in detail with reference to FIGS. 2 to 4.

Hereinafter, each configuration of the emergency detachable coupling will be described in more detail with reference to FIGS. 2 to 4.

2 is an exploded perspective view showing a part of an emergency detachable coupling according to an embodiment of the present invention, FIG. 3 is a cross-sectional view taken along line AA of FIG. 2, and FIG. 4 is an enlarged view of a part of FIG. 3 It is a drawing.

First, referring to FIG. 2, a pair of couplers 10 has a blocking part 30 disposed inside each of the couplers 10. The blocking part 30 is for opening and blocking a flow path through which a fluid flows, and is disposed rotatably inside the coupler 10 and includes a support plate 31 and an expansion part 32.

The support plate 31 is for supporting the expansion part 32 that completely blocks the inside of the coupler 10, and is formed in a thin plate shape and is hinged to the inside of the coupler 10 so as to be rotatable. The support plate 31 is disposed inside the coupler 10 so that when the pair of couplers 10 is separated, it may rotate around the hinge shaft 312 to block part of the flow path, and completely block the flow path. The expansion part 32 can be supported. In particular, a pair of the support plates 31 may be rotated about the hinge shaft 312 at the same time as the coupler 10 is separated, thereby separating the coupler 10 and blocking the flow path at the same time.

In more detail with reference to FIGS. 2 and 3, the support plate 31 is formed in a circular curved thin plate shape, and has a hinge part 311 capable of being coupled to the cylindrical surface of the coupler 10 at one end. Is formed. The coupler 10 is formed with an indentation portion (see 11 of FIG. 4) to which the hinge portion 311 can be coupled to at least a portion of the cylindrical surface, so that the hinge portion 311 is inserted and disposed inside the indentation portion 11 It can be coupled by the hinge shaft 312. The support plate 31 may be formed integrally with the hinge part 311 or may be formed separately to be coupled to each other. The support plate 31 is coupled to the inner side of the coupler 10 by the hinge part 311 and may rotate around the hinge shaft 311. The hinge part 311 is rotated or restricted by the locking part 50 so that the support plate 31 can be spread or folded inside the coupler 10.

The locking part 50 is for limiting the rotation of the support plate 21, and a locking pin 51 that is in contact with or separated from at least a portion of the hinge part 311, and a first elastic member for moving the locking pin 51 Including 52, it is possible to limit the rotation of the support plate 31.

The locking pin 51 may be formed as a thin and long rod, and may be inserted into the hinge part 311 by penetrating the bonding surface 21 to which the pair of couplers 10 are in contact. In other words, the locking pin 51 passes through the bonding surface 21 and is inserted in the longitudinal direction of the coupler 10 to be disposed on the cylindrical surface, and one end thereof is exposed to the indentation 11 so that the hinge part 311 Can be inserted into The locking pin 51 may be in contact with at least a portion of the hinge part 311 to limit the rotation of the support plate 31, or may be separated from the hinge part 311 to rotate the support plate 31. In particular, the locking pin 51 slides in the longitudinal direction of the coupler 10 by the first elastic member 52 and is inserted into the hinge part 311 or protruded to the outside of the bonding surface 21 to the hinge part 311 ) Can be deviated from.

The first elastic member 52 is a kind of spring for sliding and moving the locking pin 51 inside the cylindrical surface to contact and separate the hinge part 311, and is interposed between the locking pin 51 and the coupler 10 It can be compressed and restored by the locking pin 51. As in the enlarged drawing of FIG. 4, the first elastic member 52 is installed on the inside of the cylindrical surface to be exposed to the locking pin 51 inserted into the cylindrical surface, and the locking pin 51 is a coupler ( It can be compressed and restored as it moves in the longitudinal direction of 10). The first elastic member 52 may maintain a compressed state when the locking pins 51 are supported by the bonding surface 21 of the other couplers 10 in contact with each other. For example, when the locking pin 51 is inserted into the bonding surface 21, one end is inserted into the hinge part 311 and the other end is completely inserted into the cylindrical surface, the first elastic member 52 You can keep it compressed. At this time, when the force applied to the other end of the locking pin 51 is removed, the first elastic member 52 is restored while the other end of the locking pin 51 is separated from the bonding surface 21 and one end is hinged. Separated from (311). The locking pin 51 is inserted into the cylindrical surface and presses the hinge portion 311, and may be separated from the hinge portion 311 while the pair of couplers 10 are separated. The support plate 31 may rotate about the hinge shaft 312 as the force of the locking pin 51 pressing the hinge part 311 is removed.

When the locking pin 51 is separated from the hinge part 311, the support plate 31 rotates around the hinge shaft 312, and the support plate 31 rotates around the hinge shaft 312 from the center. ) And the expansion part 32 arranged in close contact can also be rotated together. The expansion part 32 is injected with a compressor body at the same time as the support plate 31 rotates and expands in a disk shape, and is supported by the support plate 31 to completely block the inner peripheral surface of the coupler 10.

Subsequently, the expansion unit 32 is a part constituting the blocking unit 30 for blocking the interior of the coupler 10, is formed as a sealed thin bag, and can be expanded by injecting gas into it, and gas storage to be described later. The volume is expanded by the part 41 and rotates together with the support plate 31 to block the flow path. Specifically, the expansion part 32 is formed in the form of a thin and large pocket, folded and disposed in close contact with one side of the support plate 31, and may expand and contract by gas flowing therein. As shown in FIG. 2, the expansion part 32 is disposed inside the coupler 10, and is interposed between the support plate 31 and the inner surface of the coupler 10, and when the compressor body is injected, the support plate (31) can be pushed and rotated. The expansion part 32 is formed of a thin and fluffy material, but is stored in a state interposed between the support plate 31 and the cylindrical surface of the coupler 10, so that it is stretched by gravity or placed in a flow path before gas is introduced into the fluid. It can prevent the phenomenon that obstructs the flow of Meanwhile, when the clamp 20 is separated from the expansion unit 32, gas is injected from the gas injection unit 40 to block the interior of the coupler 10.

The gas injection unit 40 is for injecting gas into the expansion unit 32, a gas storage unit 41 connected to the expansion unit 32 and storing compressed gas therein, and a gas storage unit 41 ) And a valve 42 connected between the expansion unit 32 and controlling a compressor body injected into the expansion unit 32.

The gas storage unit 41 is a type of compressor body pack that stores a compressor body therein, and one end is connected to the expansion unit 32 to inject compressed gas into the expansion unit 32. The gas storage part 41 is disposed outside the coupler 10 and may be connected to at least a part of the expansion part 32 exposed to the outside. The gas storage unit 41 stores the compressor body therein, and describes a compressor body pack capable of discharging the compressor body depending on whether the valve 42 is opened or closed, but is not limited thereto, and carbon dioxide is stored therein. Various gas injection devices capable of inflating by injecting gas into the inner space of the expansion unit 32 may be used, such as a carbon dioxide compressed capsule formed in the form of a stored capsule and rapidly expands while the capsule touches.

On the other hand, the valve 42 is disposed between the gas storage unit 41 and the expansion unit 32, so that the compressor body can be injected into the expansion unit 32 depending on whether the valve 42 is opened or closed.

The valve 42 is connected and disposed between the gas storage unit 41 and the expansion unit 32 to control a compressor body injected into the expansion unit 32. The valve 42 is connected to the gas storage unit 41 and the expansion unit 32, and opens and closes the conduit through which the gas storage unit 41 and the expansion unit 32 communicate, and the expansion unit from the gas storage unit 41 It is possible to control the compressed body injected into (32).

More specifically, the valve 42 includes a valve housing 421, a second elastic member 423 and a valve piston 424.

Referring to FIG. 4, the valve housing 421 is a type of housing that forms the outer shape of the valve 42, and is disposed between the outside of the coupler 10 and the gas storage part 41. The valve housing 421 may be formed in a cross shape in which a horizontal bar and a vertical bar are combined. The valve housing 421 may have a space formed therein so that a horizontal bar and a vertical bar may communicate with each other. In the valve housing 421 formed as described above, both ends of the vertical bar are connected to the gas storage part 41 and the expansion part 32, respectively, and the gas storage part 41 and the expansion part 32 and It is possible to form a conduit 422 in communication. In other words, the valve housing 421 may be arranged so that the pipe passages 422 opened at both ends connect one end of the expansion unit 32 exposed to the outside of the coupler 10 and the gas storage unit 41, respectively. , The horizontal bar may be disposed in parallel with the longitudinal direction of the coupler 10. On the other hand, the valve housing 421 may have a valve piston 424 intercepting the pipeline 422 communicating with the gas storage unit 421 and the expansion unit 32 therein.

The valve piston 424 is disposed vertically with the pipe 422 to open and close the pipe 422, and at least a part of the valve piston 424 may be inserted and disposed inside the horizontal bar of the valve housing 421. The valve piston 424 is formed in a shape of a thin bar, and a part of the valve piston 424 is inserted and disposed inside the horizontal bar of the valve housing 421, and may be moved along the longitudinal direction to open and close the pipe 422. More specifically, the valve piston 424 is disposed on a horizontal bar, and one end is exposed to the outside of the valve housing 421 and supported by the clamp 20, and the other end is in contact with the second elastic member 423 to provide a second elasticity. The elastic force may be transmitted from the member 423. The second elastic member 423 is a member that applies an elastic force to the valve piston 424 so that the valve piston 421 slides along the longitudinal direction to open and close the pipe 422. The second elastic member 423 is arranged to be in contact with the other end of the valve piston 424, and when one end of the valve piston 424 is in contact with the clamp 20, it is compressed, and one end of the valve piston 424 is clamped. When separated from the valve 20, an elastic force is applied to the valve piston 424 by the restored elastic force, so that one end of the valve piston 424 may be exposed to the outside of the valve housing 421. At this time, the valve piston 424 may have a through hole 424a through which a part of the valve piston 424 penetrates, and may be disposed to communicate with the pipe 422 when it is moved in the longitudinal direction by the second elastic member 423. That is, the valve piston 424 moves in the longitudinal direction when the clamp 20 is separated from the coupler 10 and is positioned so that the through hole 424a communicates with the pipe 422 so that the gas storage part 41 and the expansion part ( 32) is arranged in communication so that the compressor body can be injected into the expansion unit 32.

In this way, the valve housing 421 is interposed between the gas storage unit 41 and the expansion unit 32, and the valve piston 421 is supported by the clamp 20, so that the valve housing is in contact with the clamp 20. It is possible to open and close the pipe 422 communicating the gas storage unit 41 and the expansion unit 32 by sliding along the longitudinal direction of the 421, and will be described later in detail with respect to the operation method.

Hereinafter, referring to FIGS. 5 and 6, a detailed description will be given with respect to an operation process of operating the blocking unit, the gas injection unit, and the locking unit to block the inside of the pipe.

FIG. 5 is an operation diagram showing an operation process of the blocking part, the gas injection part, and the locking part of FIG. 4, and FIG. 6 is a cross-sectional view taken along line B-B of FIG. 2.

5, the emergency detachable coupling (1) of the present invention is a pair of clamps 20 are released by the driving unit when an excessive load is applied to the pipe or coupling (10) during unloading of cargo. The coupler 10 is separated, and at the same time, the blocking part 30 rotates inside the coupler 10 to quickly block the interior.

First, referring to (a) and (b) of Fig. 5 shows a diagram in which the clamp 20 is separated by the driving unit and the locking unit 50, the blocking unit 30, and the valve 42 operate. have. As the driving unit is unlocked, the clamp 20 is separated from the outer circumferential surface of the pair of couplers 10, and the pair of couplers 10a and 10b in contact with each other is also separated. When the clamp 20 is separated from the coupler 10, the valve piston 424 having one end supported by the clamp 10 can slide in the longitudinal direction of the coupler 10 by the elastic force of the second elastic member 423. have. In addition, at the same time, the locking pin 51 slides by the elastic force of the first elastic member 52 so that the other end protrudes to the outside of the bonding surface 21, and one end is separated from the hinge part 311 to be separated from the support plate ( 31) can be rotated around the hinge shaft 311. When the locking pin 311 is separated, the support plate 31 may rotate together with the expansion part 32 disposed in close contact with one side. At this time, the expansion part 32 rotates together with the support plate 31 and the compressor body is injected into the inside by the valve 42 that is opened, and can expand to the extent that the flow path is blocked by the compressor body. The expansion unit 32 may block the flow path by injecting and expanding the compressor body into the expansion unit 32 by expanding the flow path equal to or larger than the diameter as shown in FIG. 6. The expansion part 32 can completely seal the inner circumferential surface of the coupler 10 as it is deformed even if it expands larger than the inner diameter of the coupler 10, and is supported by the support plate 31 to maintain a state in which the flow path is blocked. have. At this time, the expansion part 32 is arranged to be in contact with the fluid, and the support plate 31 is disposed outside the separated coupler 10, so that the expansion part 32 rotates the flow path by the pressure of the fluid to contact the inner circumferential surface. Can be prevented. In addition, the support plate 31 and the expansion part 32 rotate simultaneously with the separation of the clamp 20, and the expansion part 32 bulges while rotating on the inner circumferential surface of the coupler 10 to completely seal the inner circumferential surface of the coupler 10 This can prevent the leakage of cargo.

The embodiments of the present invention have been described above with reference to the accompanying drawings, but those of ordinary skill in the art to which the present invention pertains have found that the present invention can be implemented in other specific forms without changing the technical spirit or essential features. You can understand. Therefore, it should be understood that the embodiments described above are illustrative in all respects and not limiting.

1: emergency detachable coupling
10, 10a, 10b: coupler 11: indentation
20: clamp 21: bonding surface
30: blocking portion 31: support plate
32: expansion unit 40: gas injection unit
41: gas storage unit 42: valve
50: locking part 51: locking pin
52: first elastic member 311: hinge
312: hinge shaft 421: valve housing
422: pipeline 423: second elastic member
424: valve piston 424a: through hole

Claims (6)

A pair of couplers that are formed in a cylindrical tubular shape, are in contact with each other, and connect between two pipes through which a fluid moves;
A clamp having one end hinged to form a ring shape, and surrounding and fixing the bonding surfaces of the pair of couplers;
A support plate that is hinged to the inside of the coupler and rotates around the hinge, and an expansion part that is in close contact with the support plate and is folded to the inside of the coupler. Blocking part;
A gas injection part storing a compressor body therein and including a gas storage part connected to the expansion part, and a valve connected between the gas storage part and the expansion part to control the compressor body injected into the expansion part; And
A locking pin that penetrates the bonding surface and is inserted into the hinge to limit the rotation of the support plate, and a first elastic member interposed between the locking pin and the coupler to protrude the locking pin out of the bonding surface. Coupling capable of emergency separation including a locking part to be removed. The method of claim 1,
The expansion unit is interposed between the support plate and the inner surface of the coupler, and when the compressor body is injected, an emergency detachable coupling that pushes and rotates the support plate. The method of claim 1,
The valve includes a valve housing in which a conduit connecting the gas storage unit and the expansion unit is formed, and moves in a longitudinal direction to open and close the conduit, and one end is supported by the clamp and the other end is elastic force toward the clamp. Including a valve piston supported by a second elastic member for transmitting,
When the clamp is separated from the coupler, the valve piston is moved and the compressor body is injected into the expansion unit. The method of claim 1,
The locking pin is supported by the bonding surface of another coupler in contact with each other, and an emergency separation capable of compressing the first elastic member. The method of claim 1,
A coupling capable of emergency separation further comprising a fixing part that locks the clamp to fix the coupler and releases the clamp by an external signal. The method of claim 1,
The expansion unit receives the compressed gas from the gas storage unit and expands in a disc shape so that the diameter is greater than or equal to the inner diameter of the coupler.

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