WO2017003023A1 - Dispositif de raccordement de tuyaux - Google Patents

Dispositif de raccordement de tuyaux Download PDF

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Publication number
WO2017003023A1
WO2017003023A1 PCT/KR2015/009756 KR2015009756W WO2017003023A1 WO 2017003023 A1 WO2017003023 A1 WO 2017003023A1 KR 2015009756 W KR2015009756 W KR 2015009756W WO 2017003023 A1 WO2017003023 A1 WO 2017003023A1
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WO
WIPO (PCT)
Prior art keywords
pipe
ring
tightening member
insertion hole
cap nut
Prior art date
Application number
PCT/KR2015/009756
Other languages
English (en)
Korean (ko)
Inventor
임채갑
Original Assignee
임채갑
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 임채갑 filed Critical 임채갑
Publication of WO2017003023A1 publication Critical patent/WO2017003023A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/06—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends
    • F16L19/065—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts in which radial clamping is obtained by wedging action on non-deformed pipe ends the wedging action being effected by means of a ring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/005—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts comprising locking means for the threaded member
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/08—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe
    • F16L19/083—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe the longitudinal cross-section of the ring not being modified during clamping
    • F16L19/086—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe the longitudinal cross-section of the ring not being modified during clamping with additional sealing means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/08—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe
    • F16L19/10—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe the profile of the ring being altered
    • F16L19/12—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts with metal rings which bite into the wall of the pipe the profile of the ring being altered with additional sealing means

Definitions

  • the present invention relates to a pipe connecting device for joining a pipe provided as a flow passage such as a fluid, and more particularly, a pipe connecting device capable of easily and firmly performing pipe connection as well as completely preventing leakage of fluid. It is about.
  • a pipe In order to supply fluids, such as tap water and a gas, the inside of the hollow flow pipe called a pipe is employ
  • a valve or the like for opening and closing the flow of the fluid is employed.
  • Appropriate pipe connecting devices are adopted at the site of connecting pipes and pipes or connecting pipes and valves.
  • the pipe connecting device is required to have a structure that can easily execute the pipe connection, while preventing the leakage of fluid that may occur at the connection site, and also reliably prevent the pipe from being inappropriately released from the pipe connection.
  • Tightening member is to reduce the inner diameter when tightening the pipe to tighten the outer peripheral surface of the pipe to prevent the pipe from being separated from the tightening member.
  • FIG. 1 is an exploded perspective view of a pipe connecting device according to the prior art
  • Figure 2 is a cross-sectional view of the main portion.
  • the pipe connecting device comprises a connecting socket 1, a fastening member 7 and a fastening nut 6.
  • the connection socket 1 has a first screw part 2 for fastening the first pipe 9 to one side, and an inner connection pipe 4 and a pipe insertion groove 5 on the other side, and a tightening nut.
  • (6) is provided with a second screw portion (3).
  • the tightening member 7 is formed in a ring shape and is provided with a cutout 8, and a protrusion 7a is provided on the inner circumferential surface thereof.
  • the second pipe 10 is inserted into the pipe insertion groove 5 of the connecting socket 1 through the inside of the fastening nut 6 and the fastening member 7, and then the fastening nut 6 is inserted into the second threaded portion 3. ) Is fastened.
  • the inclined surfaces 5a and 6a are provided in the outer edge portion of the pipe insertion groove 5 and the inside of the tightening nut 6, respectively.
  • the fastening member 7 is compressed inward according to the fastening strength thereof, so that the tightness of the fastening member 7 to the second pipe 10 is strong.
  • the projection 7a provided on the inner surface of the tightening member 7 penetrates into the outer circumferential surface of the second pipe 10, thereby further increasing the adhesion between the tightening member 7 and the second pipe 10. The improper detachment of the two pipe 10 from the tightening member 7, ie the connecting socket 1, is prevented.
  • Utility Model Registration No. 20-0120330 (name: one-touch insertion tube) discloses a fastening member which is formed in a ring shape and has a plurality of grooves formed at both ends thereof.
  • FIG. 3 is a partial cross-sectional exploded view of the tube connector according to the prior art
  • Figure 4 is a perspective view showing the appearance of the tightening member 40 in FIG. 5 is sectional drawing which showed the principal part cross section structure at the time of fastening a pipe to a pipe connector.
  • the pipe connector is configured with a socket body 20, a cap nut 30 and a fastening member 40.
  • the socket main body 20 is provided with a screw connection portion 20a screwed to a pipe connection hole such as an L type or a T type, and a screw connection portion 20b to which the cap nut 30 is screwed, and the screw connection portion 20b is provided.
  • the pipe 50 is inserted into the insertion hole provided through the cap nut 30 and the tightening member 40.
  • the tightening member 40 is configured in a wide ring shape.
  • the outer circumferential surface of the tightening member 40 is formed with inclined surfaces 40b and 40c which are inclined toward the center side toward both ends from the center portion 40a as a starting point, and a plurality of grooves 41 and 42 are formed at both ends.
  • the O-ring groove 43 is formed on the inner circumferential surface.
  • the inclined surfaces 21 and 31 are provided in the pipe insertion hole of the socket main body 20 and the inside of the cap nut 30 corresponding to the inclined surfaces 40b and 40c of the fastening member 40. Therefore, when the cap nut 30 is fastened to the screw connection portion 20b in a state where the fastening member 40 is disposed between the socket body 20 and the cap nut 30, the inclined surfaces 21 and 31 according to the fastening strength thereof. ) Presses the tightening member 40 in the inward direction while slidingly sliding along the inclined surfaces 40b and 40c of the tightening member 40. Accordingly, the fastening member 40 is pressed inwardly and in close contact with the pipe 50 disposed therein at a predetermined pressure or more to prevent the pipe 50 from being inappropriately separated from the socket body 20.
  • the fluid flowing through the pipes 9 and 10 leaks to the outside through the fastening portion of the first pipe 9 and the first threaded portion 2, After leaking to the inside of the tightening nut 6 through the contact surface between the pipe insertion groove 5 and the second pipe 10 and the contact surface between the tightening member 7 and the inclined surface 5a, the tightening member 7 and the inclined surface again. Through the contact surface between 6a and the fastening part of the 2nd screw part 3 and the fastening nut 6, it can leak out.
  • the fluid flowing through the pipe 50 is connected to the contact surface between the inclined surface 21 of the socket body 20 and the inclined surface 40b of the fastening member 40, and the cap nut.
  • the contact surface between the 30 and the pipe 50 and the fastening portion of the cap nut 30 and the screw connection portion 20b can be leaked to the outside.
  • the coupling force of the pipe to the pipe connecting device is determined by the frictional force between the fastening members 7 and 40 and the pipes 10 and 50.
  • the tightening members 7 and 40 and the pipes 10 and 50 which are usually made of metal, are in contact with each other, there is a limit to increasing the friction force by a predetermined level or more within a limited contact area.
  • the tightening force of the fastening member 7.40 that is, the fastening force between the fastening nut 6 and the cap nut 30 must be increased to a predetermined level or more, thereby reducing the work efficiency of the pipe connecting device. There is a problem.
  • the present invention has been made in view of the above circumstances, and provides a pipe connecting device capable of reliably preventing a leakage problem of fluid that may occur at the connection site by improving the sealing force between the pipe connecting device and the pipe.
  • a pipe connecting device capable of reliably preventing a leakage problem of fluid that may occur at the connection site by improving the sealing force between the pipe connecting device and the pipe.
  • the pipe hooking device for realizing the above object is coupled to a pipe for flowing fluid, or in a pipe connecting device for coupling the pipe and the pipe, the body is provided with an insertion hole is inserted And a cap having a fastening member inserted into the insertion hole and having a first through hole for inserting a pipe into the center portion, and a second through hole fastened to the insertion hole of the main body and inserted into the center portion.
  • the inner peripheral surface of the insertion hole of the main body is formed with a tapered portion of the inner diameter is monotonously reduced from the inlet side of the insertion hole
  • the tightening member is provided with an inclined surface and stepped portion on the outer peripheral surface, the inclined surface is tightened
  • the outer diameter of the member is formed to increase monotonously from one end to the other end
  • At least two incision grooves are formed in the inclined surface along the longitudinal direction
  • the cap nut is configured to press the fastening member toward the inside of the insertion hole when the cap nut is fastened to the main body.
  • FIG. 1 is an exploded perspective view of a pipe connecting device according to the prior art.
  • FIG. 2 is a sectional view of principal parts of the pipe connecting device shown in FIG. 1;
  • FIG. 3 is a partial cross-sectional exploded view of a tube connector according to the prior art
  • FIG. 4 is a perspective view showing an appearance of the tightening member 40 in FIG. 3.
  • 5 is a sectional view of principal parts when the pipe is fastened to the pipe connector.
  • FIG. 6 is an exploded perspective view of a pipe connecting apparatus according to the first embodiment of the present invention.
  • FIG. 7 is a cross-sectional perspective view of FIG. 6.
  • FIG. 8 is a cross-sectional view of FIG. 6.
  • FIG. 9 is a cross-sectional view in a state in which a pipe is coupled to a pipe connecting device.
  • FIG. 10 is an exploded cross-sectional view according to a first modification of the first embodiment.
  • FIG. 11 is a cross-sectional view of a pipe coupled to the pipe connecting device in FIG.
  • FIG. 12 is an exploded partial view of the pipe connecting apparatus according to the second embodiment of the present invention.
  • FIG. 13 is an exploded cross-sectional view corresponding to FIG. 12.
  • FIG. 14 is a partial cross-sectional perspective view of the tightening member 220 in FIG. 12.
  • FIG. 15 is a partial cross-sectional perspective view of the pressing member 230 in FIG. 12.
  • 16 is a cross-sectional view in a state in which a pipe is coupled to a pipe connecting device.
  • FIG. 17 is an exploded partial cross-sectional view of a pipe connecting apparatus according to a third embodiment of the present invention.
  • FIG. 18 is a partial cross-sectional perspective view of the tightening member 320 in FIG. 17.
  • 19 is a cross-sectional view in a state in which a pipe is coupled to a pipe connecting device.
  • FIG. 20 is a partial cross-sectional exploded view of a pipe connecting apparatus according to the fourth embodiment of the present invention.
  • FIG. 21 is a partial cross-sectional perspective view of the tightening member 420 in FIG. 20.
  • 22 is a cross-sectional view in a state in which a pipe is coupled to a pipe connecting device.
  • the pipe hooking device for realizing the above object is coupled to a pipe for flowing fluid, or in a pipe connecting device for coupling the pipe and the pipe, the body is provided with an insertion hole is inserted And a cap having a fastening member inserted into the insertion hole and having a first through hole for inserting a pipe into the center portion, and a second through hole fastened to the insertion hole of the main body and inserted into the center portion.
  • the inner peripheral surface of the insertion hole of the main body is formed with a tapered portion of the inner diameter is monotonously reduced from the inlet side of the insertion hole
  • the tightening member is provided with an inclined surface and stepped portion on the outer peripheral surface, the inclined surface is tightened
  • the outer diameter of the member is formed to increase monotonously from one end to the other end
  • At least two incision grooves are formed in the inclined surface along the longitudinal direction
  • the cap nut is configured to press the fastening member toward the inside of the insertion hole when the cap nut is fastened to the main body.
  • the inner circumferential surface of the insertion hole is provided with first and second O-rings on both sides of the tapered portion, and the second O-ring is positioned outside the cutting groove when the fastening member is inserted into the insertion hole.
  • a third O-ring is provided on the inner circumferential surface of the through hole corresponding to the stepped portion of the tightening member.
  • a fourth O-ring is provided on the inner circumferential surface of the through hole of the cap nut.
  • the cutting groove is characterized in that it is formed inclined with respect to the longitudinal direction of the pipe.
  • the inner peripheral surface of the through hole corresponding to the inclined surface of the tightening member is characterized in that the stopper is further formed.
  • the pressing ring is further provided between the tightening member and the cap nut
  • the tightening member is further provided with a first coupling hole for communicating the pressing ring with the third O-ring in the coupling direction with the cap nut
  • the cap nut is further provided with a second coupling hole for communicating the pressure ring with the fourth O-ring in the direction of engagement with the tightening member.
  • the pipe connecting device is coupled to a pipe for flowing a fluid, or in a pipe connecting device for coupling a pipe and a pipe, the main body is provided with an insertion hole into which the pipe is inserted, and has a ring shape In addition, a cutout portion is provided at an intermediate portion, a fastening member disposed between the inner circumferential surface of the insertion hole and the outer circumferential surface of the pipe, a first through hole into which the pipe is inserted in the central portion, and a pressure disposed between the tightening member and the cap nut.
  • a cap nut having a second through hole through which the member is fastened to the insertion hole of the main body and into which the pipe is inserted into the center portion, wherein the main body corresponds to a first inclined surface of the tightening member on the inner circumferential surface of the insertion hole. It is provided with an inclined portion, the tightening member in the inward direction toward both ends relative to the center portion on the outer peripheral surface Extremities of the first and second, and having a second inclined surface, wherein the pressing member is characterized in that it comprises a second front end inclined portion corresponding to the second inclined surface.
  • the inner peripheral surface of the tightening member is characterized in that the stopper is formed.
  • the inner peripheral surface of the tightening member is characterized in that the groove is further formed along the arc direction.
  • a first O-ring is installed on the outer circumferential surface of the pressing member.
  • a second O-ring is installed on the inner circumferential surface of the second through hole.
  • a first stepped portion is formed at a rear end of the first O-ring, and a first pressing protrusion for pressing the first O-ring through the first stepped portion is further provided at the front end of the cap nut.
  • a second stepped portion is formed at the front end of the second o-ring, and a second pressing protrusion for pressing the second o-ring through the second stepped portion is further provided at the rear end of the pressing member.
  • the pipe connecting device is coupled to a pipe for flowing a fluid, or in a pipe connecting device for coupling a pipe and a pipe, a main body provided with an insertion hole into which the pipe is inserted, and a pipe in a central portion thereof.
  • a cap nut provided with a first through hole into which is inserted a fastening member disposed between an inner circumferential surface of the insertion hole and an outer circumferential surface of the pipe, and a second through hole which is fastened to the insertion hole of the main body and into which the pipe is inserted into the center portion.
  • the main body is provided with a stepped portion for blocking the entry of the tightening member inside the insertion hole
  • the tightening member is provided with an inclined surface inclined in the inward direction in the front end portion
  • the groove is formed in the circumferential direction on the front end portion It is characterized by.
  • a first O-ring is installed on the outer circumferential surface of the tightening member.
  • a second O-ring is installed on the inner circumferential surface of the second through hole.
  • a first stepped portion is formed at a rear end of the first O-ring, and a first pressing protrusion for pressing the first O-ring through the first stepped portion is further provided at the front end of the cap nut.
  • a second stepped portion is formed at the front end of the second O-ring, and a second pressing protrusion for pressing the second O-ring through the second stepped portion is further provided at the rear end of the fastening member.
  • the meaning of the pipe connecting device in the present specification is any pipe connection including T-shaped, L-shaped and cross-shaped, etc. used for the pipe connection, additionally employed in the connection between the pipe connection and the pipe or may be employed in the connection between the pipes.
  • the pipe connection device of the present invention includes an integral mechanism and structure that can be employed for the joining of pipes.
  • FIGS. 6 to 9 are views showing the structure of a pipe connecting apparatus according to the first embodiment of the present invention
  • Figure 6 is an exploded perspective view of the pipe connecting device
  • Figure 7 is an exploded cross-sectional perspective view
  • Figure 8 is an exploded cross-sectional view
  • Figure 9 Is a cross-sectional view with the pipe connected to the pipe connecting device.
  • the present embodiment shows a case in which the present invention is applied to the T-shaped pipe connector which is configured to be in communication with each other internally while the three insertion ports are provided with the pipe 100 is shown as an example.
  • each pipe connection structure for the three pipe insertion holes is substantially the same, only a connection structure for one pipe insertion hole will be described in detail.
  • the pipe connecting device includes a main body 110, a fastening member 120, and a cap nut 130.
  • the main body 110 has a threaded portion 111 formed on the outer circumferential surface of the insertion hole into which the pipe 100 is inserted, and a tapered portion 112 is formed on the inner circumferential surface of the insertion hole.
  • the taper portion 112 has a shape in which the inner diameter monotonously decreases toward the inner side from the inlet side of the insertion port.
  • O-rings 113 and 114 are provided at both sides of the tapered portion 112 at the inner circumferential surface of the insertion hole.
  • the O-ring grooves are preferably provided at the installation positions of the O-rings 113 and 114.
  • O-ring 113 is installed on the inner peripheral surface of the tapered portion 112 in the pipe insertion hole
  • O-ring 114 is installed on the inclined surface of the tapered portion 112, preferably the position of the inner diameter of the tapered portion 112 is the largest do.
  • the O-ring 113 prevents fluid flowing through the pipe 100 from leaking to the outside through between the inner circumferential surface of the body 110 and the outer circumferential surface of the pipe 100. It is to.
  • the o-ring 114 is to more reliably ensure the sealing force between the body 110 and the pipe 100.
  • the o-ring 114 is intended to prevent the fluid from leaking out through the inner circumferential surface of the body 110 and the outer circumferential surface of the fastening member 120 to be described later, even if the fluid leaks through the o-ring 113.
  • the tightening member 120 is made of, for example, spring steel having high strength and high elasticity. Tightening member 120 is provided with a through hole 121 is inserted into the pipe in the center portion, the inclined surface 122 and the stepped portion 123 is formed on the outer peripheral surface.
  • the inclined surface 122 corresponds to the taper portion 112 of the main body 110, and the inclined surface 122 is configured to gradually widen in diameter toward the rear end from a portion that is first inserted into the front end portion, that is, the insertion hole of the main body 110.
  • two or more incision grooves 122a are preferably formed.
  • the incision groove 122a extends along the longitudinal direction of the inclined surface 122.
  • the incision groove 122a is more easily inwardly inclined by the rotation of the fastening member 120. It is formed to have a constant angle of inclination with respect to the longitudinal direction.
  • the incision groove 122a is formed while extending as much as possible along the longitudinal direction of the inclined surface 122 so that the pipe 100 inserted through the inner through hole 121 can be tightened more easily and easily.
  • the stepped portion 123 prevents the fastening member 120 from being inserted into the insertion hole of the main body 110 more than a predetermined time, and the fastening member 120 has a through hole 132 of the cap nut 130 to be described later. This is to prevent the departure from the outside.
  • a saw-shaped stopper 124 is formed on the inner circumferential surface corresponding to the inclined surface 122, and an O-ring 126 is provided on the inner circumferential surface corresponding to the stepped portion 123.
  • the installation position of the O-ring 126 is preferably provided with an O-ring groove.
  • the stopper 124 is formed between the tightening member 120 and the pipe 100 by the teeth of the stopper 124 strongly pressing or digging the outer circumferential surface of the pipe 100 when the inclined surface 122 is compressed inward. To increase the adhesion of the.
  • the O-ring 126 is to more reliably prevent the fluid from leaking to the outside through the inner circumferential surface of the tightening member 120 and the outer circumferential surface of the pipe 100.
  • the cap nut 130 is for fastening the tightening member 120 to the inside of the insertion hole of the main body 110.
  • One side inner circumferential surface of the cap nut 130 is formed with a threaded portion 131 for fastening the cap nut 130 to the threaded portion 111 of the main body 110, and a through-hole 132 inserted into the other side while the pipe 100 is penetrated. ) Is provided.
  • the O-ring 133 is selectively provided on the inner circumferential surface of the through hole 132. Also in this case, the O-ring groove is preferably formed at the installation position of the O-ring 133. The o-ring 132 is for more reliably preventing the fluid from leaking through the cap nut 130 and the pipe 100.
  • the tip end side of the threaded portion 131 of the cap nut 130 is disposed in the cap nut 130 in the main body 110.
  • the pipe 100 is inserted through the through holes 132 and 121 of the cap nut 130 and the fastening member 120. Insertion of the pipe 100 is performed until the leading end of the pipe 100 reaches the O-ring 113 position of the body 110. Thereafter, the cap nut 130 is tightened to firmly fasten the cap nut 130 to the threaded portion 111 of the main body 110.
  • the inclined surface 122 of the fastening member 120 slides along the tapered part 112 of the main body 110 while the cap nut 130 is fastened.
  • the inclined surface 122 is pressed inward, that is, in the direction of the outer circumferential surface of the pipe 100.
  • the tightening member 40 has a wide ring shape, and grooves 41 and 42 are formed at both ends.
  • the grooves 41 and 42 consider that the inner diameter of the tightening member 40 should be reduced.
  • the recesses 41 and 42 are formed only at both ends of the tightening member 40, when the inner diameter of the tightening member 40 is reduced by using an external force, the inner diameter of the central portion 40a is structurally maintained as it is. Only the inner diameter of the end will be reduced. And to this end, the entire twisting phenomenon should be generated in the tightening member 40.
  • the conventional tightening member 40 is required to compress the tightening member 40 in the inward direction while twisting the tightening member 40 as a whole in order to reduce the inner diameter is required a very large tightening force when compressing the tightening member 40. That is, a large force is required to fasten the cap nut 30 to the screw connection part 20b. And this will not only reduce the work efficiency of the operator but also acts as a factor to lower the coupling force between the tightening member 40 and the pipe.
  • the inclined surface 122 of the tightening member 120 is formed to be inclined in one direction as a whole, and the incision grooves 122a are formed as a whole along the inclined surface 122. Therefore, when compressing the inclined surface 122 inward direction, no particularly large external force is required.
  • the incision groove 122a is formed to have a constant inclination angle with respect to the longitudinal direction, the inclined surface 122 can be more easily and tightly compressed inwardly in accordance with the rotation of the tightening member 120.
  • the stopper 124 installed on the inner circumferential surface of the inclined surface 122 strongly compresses the outer circumferential surface of the pipe 100 while the inclined surface 122 is compressed inwardly, so that the fastening member 120 and the pipe 100 are very strongly coupled. Will be.
  • the O-ring 113 is installed inside the insertion hole of the main body 110, the fluid flowing through the pipe 100 leaks to the outside through the coupling surface between the pipe 100 and the main body 110. Is blocked.
  • the O-ring 114 is formed on the tapered portion 112 of the main body 110.
  • the taper part 112 applies a tightening force in the inward direction by pressing the inclined surface 122 of the tightening member 120 when the cap nut 130 is fastened. Therefore, the O-ring 144 is pressed against the outer circumferential surface of the tightening member 120 as much as possible when the taper 112 presses the tightening member 120, and thus the fluid may be leaked through the O-ring 113. Compression to the outside through the inner circumferential surface of the main body 110 and the outer circumferential surface of the tightening member 120 is completely blocked.
  • the O-rings 126 and 133 are installed on the inner circumferential surface of the tightening member 120 and the inner circumferential surface of the cap nut 130, respectively, even if the fluid leaks through the O-ring 113, the fluid is pipe 100. Outflow through the outer circumferential surface and the inner circumferential surface of the tightening member 120 and the cap nut 130 is completely blocked.
  • FIG. 10 and 11 are views showing the structure of a pipe connecting apparatus according to a modified embodiment of the first embodiment described above, FIG. 10 is an exploded cross-sectional view of the pipe connecting apparatus, and FIG. 11 is a state in which a pipe is coupled to the pipe connecting apparatus. It is a cross section.
  • the same reference numerals are attached to substantially the same parts as the above-described embodiments in the drawings, and detailed description thereof will be omitted.
  • the pressing ring 140 is provided between the tightening member 120 and the cap nut 130.
  • the fastening member 120 is provided with a first coupling hole 121a for coupling the pressing ring 140 to communicate with the O-ring 126 in the coupling direction with the cap nut 130, the cap nut 130 is provided
  • a second coupling hole 132a for coupling the pressing ring 140 to communicate with the O-ring 133 in the coupling direction with the tightening member 120 is provided.
  • the pressing ring 140 when the fastening member 120 and the cap nut 130 are fastened to the main body 110, the pressing ring 140 is disposed between the fastening member 120 and the cap nut 130.
  • the pressing ring 140 is seated in the first and second coupling holes 121a and 132a of the tightening member 120 and the cap nut 130.
  • the pressing ring 140 is set to a width such that when the tightening member 120 and the cap nut 130 are fastened to the main body 110, the pressing rings 140 can sufficiently press the O-rings 126 and 133.
  • the O-rings 126 and 133 When the pressing ring 140 presses the O-rings 126 and 133 in the horizontal direction, the O-rings 126 and 133 extend in the vertical direction, that is, the inward direction, and the inner diameter thereof is narrowed. Therefore, in this embodiment, the adhesion between the O-rings 126 and 133 and the pipe 100 is greatly increased, thereby further improving the airtight force between the inner circumferential surface of the tightening member 120 and the cap nut 130 and the outer circumferential surface of the pipe 100. Will be.
  • FIG. 12 to 16 is a view showing the structure of a pipe connecting apparatus according to a second embodiment of the present invention
  • Figure 12 is a partial cross-sectional exploded perspective view of the pipe connecting device
  • Figure 13 is an exploded cross-sectional view corresponding to Figure 12
  • Figure 14 12 is a partial cross-sectional perspective view showing an appearance of the tightening member 220 in FIG. 12
  • FIG. 15 is a partial cross-sectional perspective view of the pressing member 230 in FIG. 12
  • FIG. 16 is a cross-sectional view in a state in which a pipe is coupled to a pipe connecting device.
  • the present embodiment shows a case in which the present invention is applied to the T-shaped pipe connector which is configured to be in communication with each other internally while the three insertion ports are provided with the pipe 100 is shown as an example.
  • each pipe connection structure for the three pipe insertion holes is substantially the same, only a connection structure for one pipe insertion hole will be described in detail.
  • the pipe connecting device includes a main body 210, a fastening member 220, a pressing member 230, and a cap nut 240.
  • the body 210 has at least one insertion hole 211 for inserting the pipe 100.
  • the inner circumferential surface of the insertion hole 211 is provided with a first inclined portion 212 for pressing the tightening member 220 to be described later inward, that is, the outer circumferential surface direction of the pipe 100, the inlet of the insertion hole 211 ?
  • P inner peripheral surface is provided with a screw portion 213 for fastening the cap nut 240.
  • the tightening member 220 is made of spring steel, for example. As can be more clearly understood in FIG. 14, the tightening member 220 is formed in a ring shape, and an incision 221 is provided at an intermediate portion thereof. By this cutout 221, the tightening member 220 is easily compressed by external pressure, and the inner diameter is reduced.
  • the outer circumferential surface of the tightening member 220 is provided with inclined surfaces 223 and 224 which are inclined inwardly toward both ends with respect to the center portion 222. These inclined surfaces 223 and 224 correspond to the first inclined portion 212 and the second inclined portion 232 to be described later.
  • the inclined surfaces 223 and 224 are in contact with the first and second inclined portions 212 and 232, respectively, and the second inclined portions 232 are inserted into the insertion hole 211 along the horizontal direction, that is, the length direction of the pipe 100.
  • the inclined surfaces of the first and second inclined portions 212 and 232 slide inwardly, that is, in the direction of the outer circumferential surface of the pipe 100. Accordingly, the tightening member 220 is compressed in the inward direction.
  • a sawtooth stopper 225 is provided on the inner circumferential surface of the tightening member 220, for example. Similar to the first embodiment, the stopper 225 is fastened to the tightening member 220 when the teeth of the stopper 225 presses or digs the outer circumferential surface of the pipe 100 when the tightening member 220 is compressed inward. And increase the adhesion between the pipe 100.
  • the structure of the stopper 225 is not limited to a specific one, and any structure capable of improving the adhesion between the tightening member 220 and the pipe 100 may be adopted in the same manner.
  • the pressing member 230 is disposed between the tightening member 220 and the cap nut 240. As can be clearly understood in FIG. 15, the pressing member 230 is provided with a through hole 231 for inserting the pipe 100 in the center portion thereof, and a second inclined portion 232 is provided at the tip portion thereof.
  • the second inclined portion 232 is configured to be inclined in an outward direction, that is, in a direction opposite to the outer circumferential surface side of the pipe 100, corresponding to the inclined surface 224 of the tightening member 220.
  • O-ring groove 233 is installed on the outer circumferential surface of the pressing member 230, the O-ring 233a is installed.
  • the o-ring 233a is for hermetic sealing between the upper surface of the pressing member 230 and the inner circumferential surface of the insertion hole 211.
  • the step portion 234 is formed at the rear end of the O-ring groove 233.
  • the stepped portion 234 constitutes a guide groove communicating with the O-ring 233a from the rear end of the pressing member 230 together with the inner circumferential surface of the insertion hole 211.
  • the second pressing protrusion 243 of the cap nut 240 enters the stepped portion 234.
  • a first pressing protrusion 235 is formed at the rear end of the inner circumferential surface of the through hole 231.
  • the first pressing protrusion 235 is for pressing the O-ring 244a of the cap nut 240.
  • the cap nut 240 has a through hole 241 for inserting the pipe 100 in a central portion thereof, and a threaded portion 242 for fastening the cap nut 240 to the main body 210 is provided on an outer circumferential surface thereof.
  • the screw portion 242 is fastened to the screw portion 213 of the main body 210.
  • a second pressing protrusion 243 for pressing the O-ring 233a of the pressing member 230 is provided at the front end side of the cap nut 240.
  • an O-ring groove 244 is installed on the inner circumferential surface of the through hole 241.
  • the O-ring groove 244 is provided with an O-ring 244a.
  • the o-ring 244a is for sealing between the inner circumferential surface of the through hole 241 and the outer circumferential surface of the pipe 100.
  • the step part 245 is formed in the front end side of the O-ring 244a.
  • the stepped portion 245 constitutes a guide groove communicating with the outer ring of the pipe 100 to the O-ring 244a from the front end of the cap nut 240.
  • the first pressing protrusion 235 of the pressing member 230 enters the guide groove.
  • the cap nut 240, the pressing member 230, and the fastening member 220 are sequentially disposed on the outside of the pipe 100, and the front end of the pipe 100 is disposed. Is inserted into the insertion hole 211 of the main body 210, and then the screw 242 of the cap nut 240 is fastened to the screw 213 of the main body 210. As the cap nut 240 is fastened, the fastening member 220 and the pressing member 230 move inwardly of the insertion hole 211.
  • the tightening member 220 When the tightening member 220 is pressurized, the cutting width of the cutout portion 221 is reduced and the inner diameter of the tightening member 220 is reduced, whereby the tightening member 220 exerts a strong tightening force on the outer circumferential surface of the pipe 100. do.
  • the teeth of the stopper 225 provided on the inner circumferential surface of the tightening member 220 strongly press or dig the outer circumferential surface of the pipe 100 so that the tightening member 220 and the pipe 100 are strongly coupled to each other.
  • the second pressing protrusion 243 of the cap nut 240 is formed with the stepped portion 234 of the pressing member 230 and the inner circumferential surface of the insertion hole 211. Since the O-ring 233a is pressed in the horizontal direction, that is, the pipe length direction along the guide groove, the O-ring 233a is compressed in the horizontal direction, and the width of the O-ring 233a in the horizontal direction is narrowed, and the thickness in the vertical direction is reduced. Will increase. Therefore, the airtight force between the outer peripheral surface of the pressing member 230 and the inner peripheral surface of the insertion hole 211 is greatly increased.
  • the first pressing protrusion 235 of the pressing member 220 presses the O-ring 244a in the horizontal direction along the guide groove formed by the stepped portion 245 of the cap nut 240 and the outer circumferential surface of the pipe 100. Since the thickness of the O-ring 244a in the vertical direction is increased, the airtight force between the inner circumferential surface of the cap nut 240 and the outer circumferential surface of the pipe 100 is greatly increased.
  • the pressing force applied to the fastening member 220 is rotated with respect to the main body 210 by rotating the cap nut 240 in the release direction. Will be released.
  • the pressing member 220 removes the pressing force by the pressing member 230
  • the inclined surface 223 slides the first inclined portion 212 in the opposite direction to the above-described operation by its elastic force, and the inner diameter is restored to its original size. Will be. Therefore, the coupling force between the tightening member 220 and the pipe 100 is released, so that the pipe 100 can be easily separated from the main body 210.
  • the cutout 221 is provided in the fastening member 220, the inner diameter of the fastening member 220 can be easily reduced with only a slight pressing force. Therefore, since a large force is not required to fasten the cap nut 240 to the main body 210, the working efficiency of the worker can be improved.
  • the O-ring 233a provided on the outer circumferential surface of the pressing member 230 and the O-ring 244a provided on the inner circumferential surface of the cap nut 240 are pipes ( Since the thickness of the O-rings 233a and 244a is vertically enlarged to the maximum, the airtight force between the main body 210 and the pipe 100 is greatly improved.
  • FIG. 17 to 19 is a view showing a pipe connecting apparatus according to a third embodiment of the present invention
  • Figure 17 is a partial cross-sectional exploded perspective view
  • Figure 18 is a partial cross-sectional perspective view of the tightening member 320 in Figure 17
  • 19 is a sectional view when the pipe 100 is fastened to the pipe connecting device.
  • the same reference numerals are attached to substantially the same parts as the above-described embodiments in the drawings, and detailed description thereof will be omitted.
  • the pipe connecting device includes the main body 210, the fastening member 320, the pressing member 230, and the cap nut 240, as in the above-described embodiment.
  • the main body 210, the pressing member 230, and the cap nut 240 are substantially the same as the above-described embodiment.
  • the tightening member 320 is formed in a ring shape like the above-described embodiment, and is provided with a cutout 321 at an intermediate portion.
  • the outer circumferential surface of the fastening member 320 is provided with inclined surfaces 323 and 324 which are inclined inwardly toward both ends with respect to the center portion 322.
  • the groove 325 is formed along the arc direction on the inner circumferential surface of the tightening member 320. This groove 325 corresponds to the stopper 225 in the second embodiment.
  • the width of the inner circumferential surface becomes wider than the width of the outer circumferential surface of the tightening member 320.
  • a contact portion between the inner circumferential surface of the tightening member 320 and the outer circumferential surface of the pipe 100 is limited to the inner edge portion of the groove 325. Accordingly, as the inner edge portion of the groove 325 strongly presses or digs the outer circumferential surface of the pipe 100, the coupling force between the tightening member 320 and the pipe 100 is further increased.
  • a restoring force for restoring the groove 325 to its original state is applied to the inner edge portion of the groove 325.
  • the restoring force acts to shape the groove 325 to grab the outer circumferential surface of the pipe 100 so that the coupling force between the tightening member 320 and the pipe 100 is further increased.
  • FIG. 20 to 22 is a view showing a pipe connecting apparatus according to a fourth embodiment of the present invention
  • Figure 20 is a partial cross-sectional exploded perspective view
  • Figure 21 is a partial cross-sectional perspective view of the tightening member 420 in Figure 17
  • 22 is a cross-sectional view when the pipe 100 is fastened to the pipe connecting device.
  • the same reference numerals are attached to substantially the same parts as the above-described embodiments in the drawings, and detailed description thereof will be omitted.
  • the tightening member 320 and the pressing member 230 are integrally formed in the third embodiment shown in FIGS. 17 to 19.
  • the pipe connecting device includes a main body 210, a fastening member 420, and a cap nut 240.
  • the tightening member 420 is provided with a through hole 421 for inserting the pipe 100 in the center portion.
  • the inclined surface 422 is installed at the tip portion, and the groove 423 is formed in the arc direction on the inner circumferential surface.
  • the stepped portion 215 is installed inside the insertion hole 211 of the main body 210 instead of the first inclined portion 212 in the second and third embodiments.
  • the O-ring groove 424 is provided on the outer circumferential surface of the tightening member 420 in the same manner as the pressing member 230 in the above embodiment, the O-ring 424a is provided.
  • the o-ring 424a is for hermetic sealing between the outer circumferential surface of the tightening member 430 and the inner circumferential surface of the main body 210.
  • the stepped portion 425 is formed at the rear end of the O-ring groove 424, and the third pressing protrusion 426 is formed at the rear end.
  • the third pressing protrusion 426 is for pressing the O-ring 244a of the cap nut 240 similarly to the first pressing protrusion 235 described above.
  • the pressing force is inclined surface 422 of the tightening member 420.
  • the tip will be concentrated. Accordingly, as the groove 423 of the tightening member 420 is compressed, an external force is applied in a direction in which the inclination angle of the inclined surface 422 increases.
  • the inclination angle of the inclined surface 422 increases, the length of the inclined surface 422 increases in the vertical direction.
  • the outer circumferential surface of the fastening member 420 is supported by the inner circumferential surface of the main body 210, so that the inclined surface 422 The tip part is to dig the outer peripheral surface while pressing the outer peripheral surface of the pipe (100). Accordingly, the coupling force between the tightening member 420 and the pipe 100 is increased to prevent the pipe 100 from being easily separated from the main body 210.
  • Other operations are the same as the above-described embodiment.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints With Pressure Members (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)

Abstract

La présente invention concerne un dispositif de raccordement de tuyaux permettant de raccorder facilement et de manière stable des tuyaux et d'empêcher complètement une fuite de fluide. Le dispositif de raccordement de tuyaux selon la présente invention est accouplé à un tuyau de sorte à déplacer un fluide ou sert à accoupler un tuyau à un autre tuyau, et comprend : un corps principal comportant un trou d'insertion dans lequel est inséré un tuyau; un élément de fixation inséré dans le trou d'insertion, et comportant un premier trou traversant ménagé dans sa partie centrale et dans lequel est inséré le tuyau; et un écrou borgne accouplé au trou d'insertion du corps principal et comportant un second trou traversant dans lequel est inséré le tuyau, le corps principal comportant une partie conique formée sur la surface circonférentielle interne du trou d'insertion et présentant un diamètre interne décroissant depuis le côté entrée du trou d'insertion dans la direction vers l'intérieur, l'élément de fixation comportant une surface inclinée, qui est agencée sur sa surface circonférentielle externe et présentant un diamètre extérieur croissant depuis une extrémité vers l'autre extrémité, et une partie étagée, qui est formée sur l'autre extrémité, la surface inclinée comportant deux rainures de coupe ou plus formées le long de sa direction longitudinale, et l'écrou borgne étant conçu de sorte à presser l'élément de fixation dans la direction vers l'intérieur du trou d'insertion lors d'un accouplement au corps principal.
PCT/KR2015/009756 2014-11-13 2015-09-16 Dispositif de raccordement de tuyaux WO2017003023A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR20140158289 2014-11-13
KR10-2015-0094372 2015-07-01
KR1020150094372A KR101756526B1 (ko) 2014-11-13 2015-07-01 파이프 연결장치

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KR (3) KR101756526B1 (fr)
WO (1) WO2017003023A1 (fr)

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CN113687406A (zh) * 2021-09-23 2021-11-23 中国工程物理研究院激光聚变研究中心 脉冲中子发射时间探测器
US12000519B2 (en) 2022-10-24 2024-06-04 Applied System Technologies, Inc. Coupling for connecting two sections of piping with water trap

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CN110242807A (zh) * 2019-05-30 2019-09-17 湖南达道新能源开发有限公司 一种热力管道拼接装置
KR102291871B1 (ko) * 2019-10-18 2021-08-19 유학현 피팅용 페럴 조립체
KR200492191Y1 (ko) 2020-02-27 2020-08-26 이충열 조임표시형 배관연결장치

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US20050077723A1 (en) * 2003-10-14 2005-04-14 Wai Lai Lin Pipe fitting for liquid or steam
JP2010060113A (ja) * 2008-09-05 2010-03-18 Sekisui Chem Co Ltd 管継手
KR101281743B1 (ko) * 2013-02-06 2013-07-04 성기천 조립성과 기밀성 향상 기능을 갖는 파이프 연결자 및 이를 이용한 파이프 연결방법
KR20150003143A (ko) * 2014-12-09 2015-01-08 디케이락 주식회사 부시를 포함하는 관이음 장치
KR20150026660A (ko) * 2013-09-03 2015-03-11 (주)로커스 배관 연결용 커넥터

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US20050077723A1 (en) * 2003-10-14 2005-04-14 Wai Lai Lin Pipe fitting for liquid or steam
JP2010060113A (ja) * 2008-09-05 2010-03-18 Sekisui Chem Co Ltd 管継手
KR101281743B1 (ko) * 2013-02-06 2013-07-04 성기천 조립성과 기밀성 향상 기능을 갖는 파이프 연결자 및 이를 이용한 파이프 연결방법
KR20150026660A (ko) * 2013-09-03 2015-03-11 (주)로커스 배관 연결용 커넥터
KR20150003143A (ko) * 2014-12-09 2015-01-08 디케이락 주식회사 부시를 포함하는 관이음 장치

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113687406A (zh) * 2021-09-23 2021-11-23 中国工程物理研究院激光聚变研究中心 脉冲中子发射时间探测器
US12000519B2 (en) 2022-10-24 2024-06-04 Applied System Technologies, Inc. Coupling for connecting two sections of piping with water trap

Also Published As

Publication number Publication date
KR20160147237A (ko) 2016-12-22
KR101756526B1 (ko) 2017-07-11
KR20160057290A (ko) 2016-05-23
KR20160144940A (ko) 2016-12-19

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