KR102220666B1 - Emergency release coupling - Google Patents

Abstract

According to the present invention, an emergency separation coupling is provided. The emergency separation coupling includes: a body part having an outer surface and an insertion hole connecting the outer surface with an inner surface, and having a hollow structure such that fluids can flow; a plug part coupled with the body part, having a hollow structure such that the fluids having flowed through the body part can flow, and having at least one placement groove formed on a position corresponding to the insertion hole; a case part moved along the body part and surrounding the body part; an elastic member placed between the body part and the case to provide an elastic force to the body part and the case; and a latch member inserted into the placement groove and the insertion hole so as to be removed from the placement groove, and fixing the plug part with the body part. Therefore, the present invention is capable of improving reliability and facilitating reuse.

Description

Emergency disconnect coupling {EMERGENCY RELEASE COUPLING}

The present invention relates to an apparatus, and more particularly, to an emergency disconnect coupling with improved reliability.

While movements to minimize air pollution, which gets worse every day, are active around the world, the International Maritime Organization (IMO) recently announced a policy to strengthen regulations on sulfur oxides and nitrogen oxides on ships, reducing the sulfur content of fuel by 3.5%. It has been decided that the period of strengthening to 0.5% will start from January 2020.

In recent years, China is also planning to expand LNG-fueled ships by reinforcing regulations on ship emissions in major sea areas and paying government subsidies for LNG-fueled ships to solve frequent smog in the country. In addition, as international interest in the environment is gradually increasing, the increase in international interest in LNG fueled ships is leading to interest in LNG bunkering. Here, the LNG bunkering is a ship that supplies fuel to ships that use LNG as fuel.

At this time, in order to prevent accidents such as an LNG explosion when supplying LNG to a ship, an emergency separation coupling is applied.

Breakaway Coupling (BAC) and Emergency Separation (Disengage) Coupling (ERC) ensure safe transfer of liquid and gaseous fluids by stopping fluid transfer at a predefined application force. The coupling is activated by a breaking stud (BAC) or by a mechanical, pneumatic or hydraulic collar release mechanism (ERC). BAC and ERC can be used in many types of shipping applications, such as ship-to-ship shipments, cryogenic shipments, ship-to-shore shipments, and shipments of hazardous chemicals.

These couplings prevent spillage and damage to the machine when the hose is exposed to sudden high loads, such as when the operator stops driving during loading or unloading. Without hose rupture valves, the consequences of these events can be very serious. Since the coupling has a switch break point that breaks at a determined break-load, the inner valve automatically closes on both sides and the flow stops immediately. This not only ensures the safety of workers. Environmental pollution and costly damage to the shipping system are avoided and downtime is reduced.

For example, a detachable coupling device for use in a line or pipeline for transporting harmful fluids is connected to a hose line, pipeline or other fluid-supply or fluid-transfer point at the outer end, and a brittle connector at the inner end. And a coupling member of an alternative tubular shape provided with a complementary face held in a sealed connection by means of.

The coupling member has a valve seat and a valve member that is urged to be in close engagement with the seat, but the valve member is typically against the spring and not engaged with the seat until the coupling member is disconnected upon failure of the connector. Stays in the state. An annular separating ram is provided to apply pressure between the coupling members to break the connector and disengage the coupling member, so that the valve member is seated under spring action and minimizes outflow of conveyed fluid.

The detachable coupling device is a means for separating the male valve body from the female valve body, including an accumulator pre-filled with nitrogen, a pneumatic poppet valve connected to the accumulator, a manually controlled air supply connected to the pneumatic poppet valve, and oil to the accumulator. And a control system comprising a hydraulic pump for filling, and a hydraulic cylinder activated by the accumulator. Alternatively, the separable coupling device can be manually separated.

The present invention relates to an emergency disconnect coupling with improved reliability. This does not limit the scope of the present invention.

One side of the present invention has an outer surface and has an insertion hole connecting the outer surface and the inner surface, and a body part having a hollow structure to flow a fluid, and a hollow structure that can be combined with the body part, and a fluid passing through the body part flows. And a plug portion having at least one seating groove formed at a position corresponding to the insertion hole, a case portion movable along the body portion and surrounding the body portion, and the body portion being disposed between the body portion and the case Emergency separation coupling comprising an elastic member providing an elastic force to the case, and a latch member that can be inserted into the insertion hole and the seating groove so as to be removable into the seating groove, and can fix the body portion and the plug portion Provides.

In addition, the seating groove of the plug part may circumscribe the outer circumferential surface of the plug part.

In addition, the seating groove and the insertion hole may be connected, and may become narrower toward the center of the body part.

In addition, the maximum width of the mounting groove may be less than or equal to the minimum width of the insertion hole.

In addition, an inner surface of the insertion hole may be steeper than an inner surface of the seating groove.

In addition, a first stopper provided in at least one of the plug part and the body part, and the case part is provided in the case part by being spaced apart from the first stopper, and when the case part moves, the case part contacts the first stopper. It may further include a second stopper limiting the moving distance.

In addition, the elastic members may include at least two sub-elastic members which are arranged side by side in the moving direction of the case part and have different elastic modulus.

In addition, it may further include a spring disk provided between the at least two sub-elastic members.

Other aspects, features, and advantages other than those described above will become apparent from the detailed content, claims and drawings for carrying out the following invention.

The emergency separation coupling according to an embodiment of the present invention can improve reliability.

The emergency separation coupling according to an embodiment of the present invention can be easily reused.

Of course, the scope of the present invention is not limited by these effects.

1 is a cross-sectional view schematically showing an emergency separation coupling according to an embodiment of the present invention.
2 is a schematic cross-sectional view of an emergency separation coupling according to an embodiment of the present invention.
3 is a partial cross-sectional view schematically showing a part of an emergency separation coupling according to an embodiment of the present invention.
4 is a partial cross-sectional view schematically showing a part of an emergency separation coupling according to another embodiment of the present invention.
5 is a schematic cross-sectional view of an emergency separation coupling according to another embodiment of the present invention.

Hereinafter, various embodiments of the present disclosure will be described in connection with the accompanying drawings. Various embodiments of the present disclosure may have various modifications and various embodiments, and specific embodiments are illustrated in the drawings and related detailed descriptions are described. However, this is not intended to limit the various embodiments of the present disclosure to a specific embodiment, it should be understood to include all changes and/or equivalents or substitutes included in the spirit and scope of the various embodiments of the present disclosure. In connection with the description of the drawings, similar reference numerals have been used for similar elements.

Expressions such as "include" or "may include" that may be used in various embodiments of the present disclosure indicate the existence of a corresponding function, operation, or component that is disclosed, and additional one or more functions, operations, or It does not limit components, etc. In addition, in various embodiments of the present disclosure, terms such as "include" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, It is to be understood that it does not preclude the possibility of the presence or addition of one or more other features or numbers, steps, actions, components, parts, or combinations thereof.

In various embodiments of the present disclosure, expressions such as "or" include any and all combinations of words listed together. For example, "A or B" may include A, may include B, or may include both A and B.

Expressions such as "first", "second", "first", or "second" used in various embodiments of the present disclosure may modify various elements of various embodiments, but do not limit the corresponding elements. Does not. For example, the expressions do not limit the order and/or importance of corresponding elements. The above expressions may be used to distinguish one component from another component. For example, a first user device and a second user device are both user devices and represent different user devices. For example, without departing from the scope of the rights of various embodiments of the present disclosure, a first component may be referred to as a second component, and similarly, a second component may be referred to as a first component.

When a component is referred to as being "connected" or "connected" to another component, the component is directly connected to or may be connected to the other component, but the component and It should be understood that new other components may exist between the other components. On the other hand, when a component is referred to as being "directly connected" or "directly connected" to another component, it will be understood that no new other component exists between the component and the other component. Should be able to

The terms used in various embodiments of the present disclosure are only used to describe a specific embodiment, and are not intended to limit the various embodiments of the present disclosure. Singular expressions include plural expressions unless the context clearly indicates otherwise.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the art to which various embodiments of the present disclosure belong.

Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in various embodiments of the present disclosure, ideal or excessively formal It is not interpreted in meaning.

1 is a cross-sectional view schematically showing an emergency separation coupling according to an embodiment of the present invention. The emergency separation coupling according to this embodiment includes a body part 100, a plug part 200, a case part 300, an elastic member 400, and a clasp member 500. Of course, the emergency separation coupling may further include a shutoff valve 10, a cable 20, etc. in addition to the above-described configuration, and does not exclude an additional configuration.

The body part 100 has a hollow structure so as to flow a fluid. For example, the body portion 100 may have a substantially cylindrical shape extending in one direction. More specifically, the body portion 100 may be in the form of a pipe or a nozzle. In this case, the fluid flowing through the body portion 100 may be LNG.

In addition, the body portion 100 may include a body 110 and a body cap 120. For example, the body 110 may be formed of a nozzle or a pipe, and the body cap 120 may be formed of a pipe having a flange. And the body cap 120 is firmly coupled to one end of the body. At this time, between the body 110 and the body cap 120 is sealed by the sealing member 31.

In addition, the body portion 100 has an insertion hole 130 connecting the outer surface and the inner surface. Insertion hole 130 is made of a substantially conical shape as shown. The insertion hole 130 has an approximately circular cross section parallel to the x-axis, and the overall phenomenon may be formed in a truncated shape. In this case, the diameter of the insertion hole 130 becomes narrower from the outer surface to the inner surface of the body 120.

Of course, the insertion hole 130 is not limited thereto, and the insertion hole 130 has a polygonal cross-section substantially parallel to the x-axis, and the overall shape may be formed as a polygonal pyramid such as a square pyramid. In addition, the size of the insertion hole 130 decreases from the outer surface to the inner surface of the body 110.

That is, the insertion hole 130 includes inclined surfaces 131 that are closer to each other from the outer surface to the inner surface of the body part 100. Here, when the insertion hole 130 has a truncated cone shape, the inclined surface 131 may be formed in a curved surface. Alternatively, when the insertion hole 130 has a polygonal frustum shape, the inclined surface 131 may be formed in a plane.

The plug part 200 has a hollow structure so that the fluid flows. For example, the plug part 200 may have a substantially cylindrical shape extending in any one direction. More specifically, the plug part 200 may be in the form of a pipe or a nozzle.

Also, the plug part 200 may include a plug 210 and a plug cap 220. The plug 210 may be formed in the form of a pipe or a nozzle, and the plug cap 220 may be formed in the form of a pipe having a flange. In addition, the plug cap 220 is firmly coupled to one end of the plug 210. At this time, between the plug 210 and the plug cap 220 is sealed by the sealing member (2).

In addition, the plug part 200 may be coupled to the body part 100. That is, when the body part 100 and the plug part 200 are connected to supply the fluid, fluid such as LNG is transferred from a storage tank to a fuel tank such as a ship.

In this case, the body portion 100 and the plug portion 200 may have a male and female structure. A part of the plug part 200 is inserted into the body part 100. More specifically, one end of the plug part 200 is made of a cylindrical pipe, and the body part 100 is formed so that the inside thereof corresponds to one end of the plug part 200. Therefore, when the body portion 100 and the plug portion 200 are coupled, they are in close contact with each other so that gas does not leak.

In particular, in order to prevent gas from leaking, a sealing member 33 is provided between the body portion 100 and the plug portion 200. In more detail, the sealing member 33 is provided on the inner surface of the body portion 100 and seals the inner surface of the body portion 100 and the outer surface of the plug portion 200. At this time, the sealing member 33 may have a ring shape.

On the other hand, the plug part 200 is provided with at least one seating groove 230 on the outer surface. The mounting groove 230 has an inclined surface 231 disposed in the longitudinal direction of the plug part 200. The seating groove 230 becomes wider from the inside to the outside. For example, the seating groove 230 has a substantially trapezoidal cross section parallel to the length direction of the plug part 200, and a narrow portion is located inside.

These seating grooves 230 may round the outer peripheral surface of the plug part 200. For example, the seating groove 231 is formed to extend in the radial direction at any one point of the center line C of the plug part 200. Therefore, the seating groove 230 is formed in a concave ring shape. Of course, it is not limited thereto, and the seating groove 230 may be a concave groove in the shape of a truncated cone or a polygonal truncated cone.

And the seating groove 230 is formed at a corresponding position of the insertion hole 130, and when the body portion 100 and the plug portion 200 maintain the coupling, a latch member 500, which will be described later, is inserted. That is, when it is not an emergency situation, the latch member 500 maintains a state inserted into the seating groove 230 and the insertion hole 130.

When the plug portion 200 and the body portion 100 are coupled, the insertion hole 130 and the seating groove 230 are connected. The insertion hole 130 is disposed outside the seating groove 230. At this time, the insertion hole 130 and the seating groove 230 become narrower toward the center of the body portion. In more detail, the width of the insertion hole 130 and the seating groove 230 decreases from the outer surface of the body portion 100 to the inner surface of the plug portion 200.

In particular, the maximum width of the seating groove 230 is less than or equal to the minimum width of the insertion hole 130. When described in more detail with reference to a cross section parallel to the xy plane, the seating groove 230 and the insertion hole 130 each have a trapezoidal cross section. At this time, the maximum width of the seating groove 230 is a width formed on the outer surface of the plug part 200. In addition, the minimum width of the insertion hole 130 is a width formed on the inner surface of the body portion 100. As shown, the maximum width of the mounting groove 130 is approximately the same as the minimum width of the insertion hole 230. That is, the inner surface 131 of the insertion hole 130 is formed steeper than the inner surface 231 of the seating groove ().

For this reason, when the clasp member 500 is inserted, the body portion 100 and the plug portion 200 can be firmly coupled. In addition, when the body part 100 and the plug part 200 are separated, the inclined surface 231 of the mounting groove 230 and the inclined surface 131 of the insertion hole 130 are connected, so that the latch member 500 to be described later is smoothly It can escape from the seating groove 230.

The case part 300 surrounds the body part 100. At least a part of the shape of the inner surface of the case part 300 corresponds to the shape of the outer surface of the body part 100. For example, the case portion 300 is formed in a cylindrical shape, the inner diameter is formed larger than the outer diameter of the body portion (100). In addition, the case part 300 extends in a direction parallel to the length direction of the body part 100. In this case, the central axis (C) of the body portion (100) and the central axis (C) of the case portion (300) may coincide. Of course, the shape of the case part 300 is not limited to a cylindrical shape.

In addition, the case portion 300 is coupled to the body portion 100 so as to be movable along the body portion 100. As shown, the case portion 300 has a cylindrical shape, and is installed to be slidable on the outer peripheral surface of the cylindrical body portion 100 in the longitudinal direction.

In addition, the case part 300 may be coupled to a fixing bracket (not shown) or a cable 20 on the outer circumferential surface. The fixing bracket or cable 20 may be installed on the fixture and transmit an external force (tensile force or traction force) to the case unit 300. The case portion may move relative to the body portion when an external force is transmitted. At this time, the external force is usually transmitted in the -x direction, and the case 300 moves in the -x direction.

In addition, the case part 300 prevents the clasp member 500, which will be described later, from being removed from the seating groove 230 when the body part 100 and the plug part 200 remain coupled. A detailed description of this will be described later.

The elastic member 410 is disposed between the body portion 100 and the case portion 300. For example, the elastic member 410 is made of a coil spring, and its diameter may be larger than the outer diameter of the body portion 100 and smaller than the inner diameter of the case portion 300. Accordingly, as shown, the elastic member 410 is provided on the outside of the body part 100, and the case part 300 is provided on the outside of the elastic member 410.

Both ends of the elastic member 410 are in contact with the body portion 100 and the case portion 300, respectively. Of course, the present invention is not limited thereto, and one end of the elastic member 410 may contact the body portion 100 and the other end of the elastic member 410 may contact the case portion 300.

In addition, spring disks 411 are provided at both ends of the elastic member 410, respectively. The spring disk 411 may increase the contact area between the body portion 100 and the case portion 300 and stably transmit elastic force to the body portion 100 and the case portion 300. This spring disk 411 is made of a flat ring-shaped disk shape.

The elastic member 410 is not compressed before an external force of a certain degree or more is applied. Therefore, in the case of an emergency situation in which an external force of less than a certain level is applied, the case part 300 is not moved so that the body part 100 and the plug part 200 are not separated.

And when an external force of a certain degree or more acts on the case part 300 in an emergency situation, the elastic member 410 is compressed by the transmitted external force, and the case part 300 moves in the -x direction. The operation will be described in detail later.

On the other hand, the case part 300 prevents the clasp member 500 to be described later from being removed from the seating groove 230 when the body part 100 and the plug part 200 remain coupled as described above. Specifically, as shown in FIG. 1, the case portion 300 includes a pressing portion 310 at a portion corresponding to the body portion 100 or the plug portion 200.

In more detail, the pressing part 310 is provided at a position corresponding to the seating groove 230 when the body part 100 and the plug part 200 are coupled. Of course, the pressing portion 310 is provided at a position corresponding to the insertion hole 130 when the body portion 100 and the plug portion 200 are coupled.

In addition, the pressing unit 310 includes an inclined surface 311 disposed in the moving direction (x-axis direction) of the case unit 300. The width of the inclined surface 311 becomes narrower toward a portion farther from the adjacent portion of the case portion 300. That is, the pressing part 310 is formed in a substantially trapezoidal shape when looking at a cross section passing through the central axis of the case part 300.

The pressing portion 310 protrudes in the inner direction of the case portion 300 and may circumferentially surround the inner circumferential surface of the cylindrical case portion 300. Of course, the present invention is not limited thereto, and the pressing part 310 may have a truncated cone shape or a polygonal pyramid shape.

In the case part 300, an accommodation space 320 is formed on at least one side of the pressing part 310 in the x-axis direction. The receiving space 320 is a space in which the clasp member 500 exits and is received, and may be formed to have a depth approximately equal to the depth of the seating groove 230. For example, the case part 300 includes two accommodation spaces 320.

The clasp member 500 is located between the plug part 200 and the case part 300. When the body portion 100 and the plug portion 200 are coupled, the clasp member 500 is inserted into the seating groove 230 of the plug portion 200, and the movement is restricted by the case portion 300 so that the seating groove It is not removed from (230).

Referring to FIG. 3, in more detail, the clasp member 500 includes a ball 510. For example, the clasp member 500 may be formed of a ball 510. The clasp member 500 may fix the body portion 100 and the plug portion 200. At this time, the clasp member 500 is inserted into the insertion hole 130 of the body portion 100 and the seating groove 230 of the plug portion 200.

The clasp member 500 contacts the inclined side 231 of the seating groove 230 when inserted, and also contacts the flat bottom surface of the seating groove 230. And the clasp member 500 contacts the insertion hole 130 of the body portion 100 when inserted. That is, the diameter of the clasp member 500 is larger than the minimum diameter of the insertion hole 130 and smaller than the maximum diameter.

Of course, the present invention is not limited thereto, and the clasp member 500 may be formed of a wedge 520 as shown in FIG. 4. That is, the clasp member 500 is made in a form in which the width of the clasp member 500 gradually narrows from one point to one end. For example, a part of the clasp member 500 may be made of a cylinder and the other part may be made of a cone. At this time, the diameter of the cylindrical portion and the truncated cone portion are the same. Of course, it is not limited thereto, and the clasp members 500 and 520 may be formed of a polygonal pillar and a polygonal shape.

In addition, the inclination of the clasp members 500 and 520 is greater than the inclination of the mounting groove 230 and smaller than the inclination of the insertion hole 130. That is, if the slope of the seating groove 230 is gentle and the slope of the insertion hole 130 is steep, the slope of the clasp members 500 and 520 is between the slope of the seating groove 230 and the insertion hole 130. Here, when the angle between the inclined surface and the x-axis is large, it means that the inclination is large.

Accordingly, the clasp member 500 can be moved in the insertion hole 130 and the seating groove 230 in an emergency while stably fixing the body portion 100 and the plug portion 200. In addition, the height of the y-axis of the clasp member 500 is equal to or less than the length from the inner surface of the case portion 300 (the cross section of the pressing portion 310) to the bottom surface of the seating groove 230.

2 is a view schematically showing the operation of the emergency separation coupling according to an embodiment of the present invention. In more detail, FIG. 2 is a diagram illustrating a state in which the body part 100 and the plug part 200 are separated in an emergency situation.

In general, to supply LNG, an emergency separation coupling is provided between the LBG storage tank and the LNG vessel. And LNG is supplied to LNG ships through pipes installed with emergency separation couplings. At this time, the cable 20 or the bracket of the above-described emergency separation coupling is fixed around it.

When supplying a fluid such as LNG as shown in FIG. 1, the body portion 100 and the plug portion 200 are in a coupled state, and the body portion 100 and the plug portion 200 are respectively provided in a blocking state. The valve 10 is also in an open state. And the pressing part 310 of the case part 300 is located on the seating groove 230, the insertion hole 130, and the clasp member 500. In addition, the elastic member 410 maintains the current state and is no longer compressed or elongated.

The clasp member 500 is in a state inserted into the seating groove 230 and the insertion hole 130, and is not removed to the outside by the case portion 300. Therefore, the body portion 100 and the plug portion 200 are firmly coupled.

As shown in FIG. 2, when a situation in which the fluid supply must be suddenly cut off occurs, a tensile force is applied to the pipe or tube in which the emergency separation coupling is installed. Tensile force is applied to the cable 20 or the bracket fixed around it, and thus, the case part 300 moves in the -x direction to compress the elastic member 410. That is, since the elastic member 410 is compressed when a tensile force of a certain degree or more is applied, it serves to operate the emergency separation coupling when necessary.

As the case part 300 moves in the -x direction, the pressing part 310 located on the clasp member 500 moves in the -x direction. In addition, the body portion 100 performs a relative motion in the -x direction and the plug portion 200 in the +x direction. At this time, the latch member 500 moves in the +y direction along the inclined surfaces 131 and 231 of the seating groove 230 and the insertion hole 130 and is removed from the seating groove 230. At this time, the clasp member 500 is disposed in the receiving space 320 of the case portion 300.

As the clasp member 500 is removed, the body portion 100 and the plug portion 200 are separated from each other. In addition, the shut-off valve 10 disposed in the body portion 100 and the plug portion 200 closes the body portion 100 and the plug portion 200, respectively, to block fluid leakage.

Meanwhile, the emergency separation coupling according to an embodiment of the present invention may include a first stopper 610 and a second stopper 620 to prevent excessive movement of the case unit 300.

Referring back to FIGS. 1 and 2, the emergency separation coupling according to the present embodiment includes a first stopper 610 provided on at least one of the plug part 200 and the body part 200, and the case part 300. It includes a second stopper 620 provided in ).

For example, when the first stopper 610 is provided in the body part 100, the second stopper is provided in the case part 300. In another case, when the first stopper 610 is provided in the plug part 200, the second stopper 620 is provided in the case part 300. In another case, when the first stopper 610 is provided in the body part 100 and the plug part 200, the second stopper 620 is provided in the case part 300.

And the second stopper 620 is provided in the case portion 300 to be spaced apart from the first stopper 610, and when the case portion 300 moves in contact with the first stopper 610 to move the case portion 300 You can limit the distance.

In more detail, the first stopper 610 includes a body stop member 611 provided on the outer surface of the body portion 100. The body stop member 611 includes a protrusion or ring formed or coupled to the outer surface of the body portion 100 (eg, the body cap 120). For example, the body stop member 611 may be formed in a ring shape that protrudes while circling the outer circumferential surface of the body portion 100 as shown. At this time, the body stop member 611 has a trapezoidal shape in which a cross section parallel to the xy plane becomes narrower toward approximately +y direction.

The second stopper 620 includes a case stop ring 621 provided in the case part 300. The case stop ring 621 is provided at one end of the case part 300, and in particular, may be provided on the inner circumferential surface of the case part 300. More specifically, the case stop ring 621 may include a protrusion or ring coupled to or formed on the inner circumferential surface of the case portion 300.

In particular, the case stop ring 621 is provided at a position spaced apart from the end disposed in the compression direction (-x direction) of the case part 300 in the center of the case part 300.

At this time, the first stopper 610 (body stop member 611) and the second stopper 620 (case stop ring 621) are adjacent to each other, but may be spaced apart in the moving direction of the case unit 300. At this time, the separation distance may be greater than or equal to the radius or width of the clasp member 500.

When the case part 300 moves a predetermined distance, the first stopper 610 (body stop member 611) and the second stopper 620 (case stop ring 621) meet and collide. For this reason, the moving distance of the case part 300 is limited.

Meanwhile, the first stopper 610 includes a plug stop ring 612 provided on an outer surface of the plug part 200. The plug stop ring 612 includes a protrusion or ring formed or coupled to the outer surface of the plug portion 200 (eg, the plug 210). For example, the plug stop ring 612 may be formed of a ring coupled to the outer circumferential surface of the plug 210 as shown.

The second stopper 620 includes a case stop member 622 provided in the case part 300. The case stop member 622 is provided at one end of the case part 300, and in particular, may be provided on the inner circumferential surface of the case part 300. More specifically, the case stop member 622 may include a protrusion or ring coupled to or formed on the inner circumferential surface of the case portion 300. As shown here, the pressing part 310 may be a case stop member 622. Of course, the present invention is not limited thereto, and the pressing part 310 and the case stop member 622 may be provided separately.

At this time, the first stopper 610 (plug stop ring 612) and the second stopper 620 (case stop member 622) are adjacent to each other, but may be spaced apart in the moving direction of the case unit 300. At this time, the separation distance may be greater than or equal to the radius or width of the clasp member 500.

In particular, the case stop member 622 is provided at a position spaced apart from an end disposed in the center of the case part 300 in a direction opposite to the compression direction (+x direction) of the case part 300.

When the case part 300 moves a predetermined distance, the first stopper 610 (plug stop ring 612) and the second stopper 620 (case stop member 622) meet and collide. For this reason, the moving distance of the case part 300 is limited.

As described above, the emergency separation coupling according to an embodiment of the present invention can prevent the clasp member 500 from being separated to the outside of the case unit 300 by limiting the moving distance of the case unit 300. In addition, the emergency separation coupling may recombine the body portion 100 and the plug portion 200.

5 is a schematic cross-sectional view of an emergency separation coupling according to another embodiment of the present invention. The emergency disconnect coupling according to the present embodiment has a portion similar to the emergency disconnect coupling according to the above-described embodiment. Therefore, in the present embodiment, parts not described in the above-described embodiment will be mainly described.

The elastic member 420 of the emergency separation coupling according to the present embodiment includes at least two sub elastic members 421 and 422 disposed side by side in the moving direction of the case part 300. Hereinafter, two sub-elastic members are described, but they are not limited thereto, and may be formed of three or more.

The first sub-elastic member 421 and the second sub-elastic member 422 are arranged side by side along the moving direction of the case part 300. For example, the first sub elastic member 421 is located adjacent to the body part 100, and the second sub elastic member 422 is located adjacent to the plug part 200.

In addition, the first sub elastic member 421 and the second sub elastic member 422 have different elastic modulus. For example, the first sub-elastic member 421 and the second sub-elastic member 422 are formed of a coil spring, and the first sub-elastic member 421 has a higher elastic modulus than the second sub-elastic member 422. For example, the thickness of the coil spring of the first sub elastic member 421 is thicker than the thickness of the coil spring of the second sub elastic member 422.

For this reason, the elastic member 420 may be configured in two stages or more, and may help to move the case unit 300 more responsively by an external force in case of an emergency.

Meanwhile, a spring disk 423 may be provided between the sub elastic members 421 and 422. For example, the spring disk 423 is provided between the first sub elastic member 421 and the second sub elastic member 422, and prevents the two sub elastic members 421 and 422 from overlapping.

The spring disk 423 may be formed of a ring that circumferentially moves along the outer peripheral surface of the body portion 100.

As described above, the present invention has been described with reference to the embodiments shown in the drawings, but these are only exemplary, and those of ordinary skill in the art will understand that various modifications and equivalent other embodiments are possible therefrom. . Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

100: body
110: body
120: body cap
130: insertion hole
200: plug part
210: plug
220: plug cap
230: seating hole
300: case
310: pressing part
320: accommodation space
410: elastic member
420: elastic member
421: first sub elastic member
422: second sub elastic member
500: clasp member
610: first stopper
620: second stopper

Claims (8)

A body portion having an outer surface, an insertion hole connecting the outer surface and the inner surface, and having a hollow structure to flow a fluid;
A plug portion that may be coupled to the body portion, has a hollow structure to allow fluid passing through the body portion to flow, and has at least one seating groove formed at a position corresponding to the insertion hole;
A case portion movable along the body portion and surrounding the body portion;
An elastic member disposed between the body portion and the case portion to provide an elastic force to the body portion and the case portion; And
A clasp member that can be inserted into the insertion hole and the seating groove so as to be detachable from the seating groove, and fixed to the body portion and the plug portion;
Including,
The elastic members are arranged side by side in the moving direction of the case part, at least two sub-elastic members having different elastic modulus from each other; including, emergency separation coupling. The method of claim 1,
The seating groove of the plug part rounds the outer circumferential surface of the plug part, an emergency separation coupling. The method of claim 1,
The seating groove and the insertion hole may be connected, and the emergency separation coupling becomes narrower toward the center of the body part. The method of claim 3,
The maximum width of the mounting groove is less than or equal to the minimum width of the insertion hole, emergency separation coupling. The method of claim 4,
The inner surface of the insertion hole is steeper than the inner surface of the seating groove, emergency separation coupling. The method of claim 1,
A first stopper provided in at least one of the plug part and the body part; And
A second stopper spaced apart from the first stopper and provided in the case portion, and contacting the first stopper when the case portion moves to limit a moving distance of the case portion;
The emergency separation coupling further comprising. delete The method of claim 1,
Emergency separation coupling further comprising a spring disk provided between the at least two sub elastic members.

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