Classifications

• • 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
  • F16L37/00—Couplings of the quick-acting type
  • F16L37/28—Couplings of the quick-acting type with fluid cut-off means
  • F16L37/30—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings
  • F16L37/32—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied
  • F16L37/34—Couplings of the quick-acting type with fluid cut-off means with fluid cut-off means in each of two pipe-end fittings at least one of two lift valves being opened automatically when the coupling is applied at least one of the lift valves being of the sleeve type, i.e. a sleeve being telescoped over an inner cylindrical wall
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T137/00—Fluid handling
  • Y10T137/8593—Systems
  • Y10T137/87917—Flow path with serial valves and/or closures
  • Y10T137/87925—Separable flow path section, valve or closure in each
  • Y10T137/87941—Each valve and/or closure operated by coupling motion
  • Y10T137/87949—Linear motion of flow path sections operates both
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T137/00—Fluid handling
  • Y10T137/8593—Systems
  • Y10T137/87917—Flow path with serial valves and/or closures
  • Y10T137/87925—Separable flow path section, valve or closure in each
  • Y10T137/87941—Each valve and/or closure operated by coupling motion
  • Y10T137/87949—Linear motion of flow path sections operates both
  • Y10T137/87957—Valves actuate each other

Definitions

• the present invention relates to a joint member in a pipe joint composed of male and female joint members.
• Male joint members and female joint members of pipe joints are usually equipped with open / close valves that close the fluid passages in the joint members so that fluid does not flow out from the inside when they are disconnected. It has been. In the disconnected state, for example, if the hose connected to the joint member is twisted, excessive internal pressure may be generated, and if they are connected again in such a state. In this case, fluid flows rapidly around the on / off valve with the on / off valve slightly opened.
• Patent Document 1 Various joint members have been developed that allow the internal pressure in the joint member to be removed before connection.
• the pressure relief is mainly due to the high internal pressure, which makes it difficult to push open the on-off valve for high internal pressure even if they are close to each other to connect the male joint member and female joint member. This is to eliminate this.
• the seal ring may be peeled off.
• Patent Document 1 Japanese Utility Model Publication No. 50-124624
• the present invention is a joint member that avoids peeling of the seal ring as much as possible due to the rapid flow of fluid around the on-off valve that occurs when the on-off valve is opened.
• the purpose is to provide.
• FIG. 1 shows a seal ring 12 in a conventional on-off valve 10, that is, a seal ring having a rectangular cross section fitted and fixed to an annular groove 16 formed in a valve head 14.
• the present inventors considered that the shape of the seal ring is also related to the peeling of the seal ring, and aimed to provide a pipe joint that improved the shape of the seal ring and caused the peeling of the seal ring.
• a tubular member having a fluid passage the tubular member having an annular valve seat surface formed so as to surround the fluid passage;
• a closed position that is set in the fluid passage of the tubular member and is pressed and engaged with the annular valve seat surface to close the fluid passage; and a rearward direction from the annular valve seat surface in the axial direction of the fluid passage.
• An open / close valve that is displaceable between the open position and the fluid passage.
• the on-off valve is
• the annular valve surface portion has a rear annular flow passage restriction portion which is in contact with or close to the annular valve seat surface;
• the rear annular flow path restricting portion is in contact with the annular valve seat surface until the opening / closing valve starts to move from the closed position to the open position until the seal ring is separated from the annular valve seat surface by a predetermined distance.
• a joint member for a pipe joint is provided.
• the annular valve seat surface is sealingly engaged by the seal ring in the closed position, the annular front valve seat surface in front of the annular seal portion, and the rear annular rear valve. With a seating surface,
• the annular rear valve seat surface has a rear axial surface extending substantially parallel to the axis, and the on-off valve starts moving from the closed position to the open position, and the seal ring extends from the annular valve seat surface.
• the rear-side annular flow path restricting portion can be displaced while maintaining a state of being in contact with or close to the rear-side axial direction surface until it is separated by a predetermined distance.
• the present invention also provides:
• a tubular member having a fluid passage the tubular member having an annular valve seat surface formed so as to surround the fluid passage;
• a closed position that is set in the fluid passage of the tubular member and is pressed and engaged with the annular valve seat surface to close the fluid passage; and a rearward direction from the annular valve seat surface in the axial direction of the fluid passage.
• An open / close valve that is displaceable between the open position and the fluid passage.
• the on-off valve is
• the seal ring When the on-off valve is in the closed position for closing the fluid passage, the seal ring is A front annular valve surface portion that is press-sealed and engaged with the annular valve seat surface, and a front annular valve surface portion located on a front side of the seal ring on the annular valve surface is in contact with or close to the annular valve seat surface. Having a channel restriction part,
• the front annular flow path restricting portion is in contact with the annular valve seat surface until the on-off valve starts moving from the closed position to the open position until the seal ring is separated from the annular valve seat surface by a predetermined distance. Alternatively, it was displaced while maintaining close proximity
• a joint member for a pipe joint is provided.
• the annular valve seat surface is sealingly engaged by the seal ring in the closed position, an annular front valve seat surface in front of the annular seal valve seat surface, and a rear annular rear side A valve seat surface,
• the annular front valve seat surface has a front axial direction surface extending substantially parallel to the axis, and the on-off valve starts moving from the closed position to the open position, and the seal ring has a predetermined distance from the annular valve seat surface.
• the front-side annular flow path restricting portion can be displaced while maintaining a state in contact with or close to the front-side axial direction surface until the distance between the front-side annular flow passage restriction portion and the front-side annular flow passage restriction portion is increased.
• the annular valve surface has an annular groove formed between the front annular valve surface portion and the rear annular valve surface portion;
• the seal ring is adapted to be fitted and fixed in the annular groove
• the annular groove has a front annular groove and a rear annular groove shallower than the front annular groove;
• the rear annular valve surface portion of the annular valve surface has a radius larger than that of the front annular valve surface portion
• the seal ring is fitted into the front annular groove and has a front annular seal portion having a larger radius than the front annular valve surface portion of the annular valve surface, and is continuous with the front annular seal portion, and the outer diameter is the front portion.
• a rear annular seal portion that is substantially the same as the annular seal portion and is smaller than the rear annular valve face portion and is fitted and fixed to the rear annular groove portion can be provided.
• the rear annular groove has a rear extension groove extending rearward by a predetermined length at a radially inner position of the rear annular valve surface portion of the annular valve surface;
• the rear annular seal portion can extend into the rear extension groove portion of the rear annular groove portion and can be fitted and fixed.
• the annular valve surface has an annular groove formed between the front annular valve surface portion and the rear annular valve surface portion;
• the seal ring is adapted to be fitted and fixed in the annular groove
• the annular groove has a front annular groove portion, a rear annular groove portion, and an annular raised portion raised between both annular groove portions, and the annular raised portion has substantially the same radius as the front annular valve face portion.
• the seal ring may be U-shaped in cross section including the axis, and the outer diameter may be smaller than the rear side surface portion larger than the front annular valve surface portion.
• the present invention also provides
• a tubular member having a fluid passage the tubular member having an annular valve seat surface formed so as to surround the fluid passage;
• a closed position that is set in the fluid passage of the tubular member and is pressed and engaged with the annular valve seat surface to close the fluid passage; and a rearward direction from the annular valve seat surface in the axial direction of the fluid passage.
• An open / close valve that is displaceable between the open position and the fluid passage.
• the on-off valve is
• the annular groove has a front annular groove and a rear annular groove shallower than the front annular groove;
• the seal ring is fitted into the front annular groove and has a front annular seal portion whose outer diameter is larger than the front annular valve surface portion of the annular valve surface, and the front annular seal portion, A rear annular seal portion having a diameter substantially the same as that of the front annular seal portion, smaller than the rear annular valve face portion, and fitted and fixed to the rear annular groove portion.
• a joint member for a pipe joint is provided.
• the rear annular groove portion of the annular groove has a rear extension groove portion extending a predetermined length rearward at a radially inner position of the rear annular valve face portion;
• the rear annular seal portion can extend into the rear extension groove portion and be fixedly fitted.
• the present invention also provides:
• a tubular member having a fluid passage the tubular member having an annular valve seat surface formed so as to surround the fluid passage;
• a closed position that is set in the fluid passage of the tubular member and is pressed and engaged with the annular valve seat surface to close the fluid passage; and a rearward direction from the annular valve seat surface in the axial direction of the fluid passage.
• An open / close valve that is displaceable between the open position and the fluid passage.
• the on-off valve is
• the annular valve surface of the annular valve seat surface has a front annular valve surface portion and a rear annular valve surface portion located before and after the annular groove;
• the annular groove has a front annular groove portion, a rear annular groove portion, and an annular raised portion raised between both annular groove portions, and the annular raised portion has substantially the same radius as the front annular valve face portion.
• the seal ring is fitted and fixed to the annular groove, the cross-sectional shape including the axis is U-shaped, and the outer diameter is smaller than the rear annular valve surface portion larger than the front annular valve surface portion.
• a joint member for a pipe joint is provided.
• the front annular flow path restriction or the rear annular flow restriction of the on-off valve is annular until the on-off valve as described above is in a position to substantially open the fluid passage. Since the valve seat is in contact with or close to the valve seat surface, the flow of the fluid flowing around the seal ring of the on-off valve is restricted, and the front annular flow path restriction and / or the rear annular shape are restricted.
• the flow path restriction is away from the annular valve seat surface and a large amount of fluid flows around the seal ring of the on-off valve, the cross section of the fluid passage around the seal ring becomes larger than a certain size. The excessive force is not applied and it is possible to prevent peeling.
• the rear annular groove is shallower than the front annular groove. Separation of the seal ring begins with the fixed partial force of the rear annular valve face portion fixed to the rear annular groove, but the radius of the rear annular seal portion fitted to the rear ring groove portion by shallowing the rear annular groove portion. Therefore, even if an excessive force is applied to the rear annular seal part due to a rapid flow, the deformation generated in the seal part is smaller than that of the conventional one as shown in FIG. For this reason, peeling is less likely to occur.
• the rear annular seal portion fitted in the rear annular groove is fixed by being sandwiched by a narrow gap between the raised portion and the rear annular seal. ,same In this way, the deformation due to the force of the fluid force is small, and therefore it is possible to prevent the seal ring from peeling off.
• FIG. 1 is a partial cross-sectional side view showing an on-off valve in a conventional joint member.
• FIG. 2 is a partial sectional side view of a pipe joint according to the present invention, showing a state where a male joint member and a female joint member are separated.
• FIG. 3 shows the same male joint member and female joint member connected together.
• FIG. 4 is a partial cross-sectional side view of a male joint member in a separated state.
• FIG. 5 is a view showing a state in which a male joint member has started to be inserted into a female joint member.
• FIG. 6 is a view showing a state where the male joint member is further inserted into the female joint member.
• FIG. 7 is a view showing a state where the male joint member is completely connected to the female joint member and the on-off valve is in the open position.
• FIG. 8 is a cross-sectional view of an on-off valve, showing a second embodiment of a seal ring.
• FIG. 9 shows a third embodiment of the seal ring.
• FIG. 10 shows a fourth embodiment of the seal ring.
• FIG. 2 shows a state where the male joint member 22 and the female joint member 24 of the pipe joint 20 according to the present invention are separated
• FIG. 3 shows a state where the male joint member and the female joint member are connected
• Show. 4 to 7 are views showing the movement of the on-off valve 26 of the male joint member when the male joint member 22 is connected to the female joint member 24
• FIG. 8 to 10 are diagrams showing various embodiments of the seal ring 50 of the on-off valve 26, respectively.
• the male joint member 22 includes a cylindrical member 32 having a fluid passage 30 and an on-off valve 26 set in the fluid passage 30 of the cylindrical member 32.
• an annular valve seat surface 34 formed so as to surround the fluid passage 30 is formed.
• the on-off valve 26 is pressed and engaged with the annular valve seat surface 34 to close the fluid passage (FIG. 2), and is displaced rearward from the annular valve seat surface 34 in the axial direction of the fluid passage 30.
• Separate fluid passage 3 It can be displaced between the open position (Fig. 3) that opens 0.
• the female joint member 24 includes a cylindrical member 42 having a fluid passage 40, a fixed valve body 44 arranged along the axis of the cylindrical member 42, and fixed to the cylindrical member 42, and a cylinder.
• a closed position (FIG. 2) that is set so as to be slidable within the cylindrical member 42 and sealably engages the fixed valve body 44 to close the fluid passage 40, and the fluid passage 40 is displaced rearward from the closed position.
• It has a cylindrical movable valve body 46 that is movable between an open position (FIG. 3) for opening.
• the on-off valve 26 of the male joint member 22 has an annular valve surface 48 facing the annular valve seat surface 34, and a seal ring 50 set on the annular valve surface.
• the seal ring 50 is pressed and engaged with the annular valve seat surface 34 and the front side of the seal ring 50 on the annular valve surface 48.
• the annular valve seat surface 34 includes an annular seal valve seat surface 34-1, which is hermetically engaged by the seal ring 50 when the on-off valve 26 is in the closed position, and a front side of the annular seal valve seat surface.
• the annular front valve seat surface 34-2 and the annular rear valve seat surface 34-3 are respectively a front axial surface 34-2 'and a rear axial surface 34 extending substantially parallel to the axis of the cylindrical member 32. — Has become 3 '.
• the annular valve surface 48 of the on-off valve 26 has an annular groove 60 formed between the front annular valve surface portion 52 and the rear annular valve surface portion 54.
• the seal ring 50 is fitted and fixed in the annular groove 60.
• the annular groove 60 has a front annular groove portion 60-1, and a rear annular groove portion 60_2 that is shallower than the front annular groove portion, and the rear annular valve surface portion 54 of the annular valve surface 48 is a front annular shape. Radius than valve face 52 Is considered large.
• the seal ring 50 includes a front annular seal portion 50-1 (FIG. 5) that fits into the front annular groove 60-1 and has a larger radius than the front annular valve surface portion 52 of the annular valve surface 48, and the front annular groove portion.
• a rear annular seal portion 50-2 which is continuous with the seal portion, has an outer diameter substantially the same as that of the front annular seal portion, is smaller than the rear annular valve face portion 54, and is fitted and fixed to the rear annular groove portion 60-2. And have.
• the male joint member 22 and the female joint member 24 are brought into contact with each other. And inserting into the fluid passage 40 of the female joint member 24.
• the fixed valve body 44 of the female joint member causes the on-off valve 26 of the male joint member to move relative to the tubular member 32 of the male joint member. Push it back and move the on-off valve 26 from the closed position to the open position.
• the on-off valve 26 starts moving from the closed position (Figs. 2 and 4) to the open position (Figs. 3 and 7), and the seal ring 50 is moved from the annular valve seat surface 34 by a predetermined distance.
• the front annular flow path restriction restriction portion 58 and the rear annular flow passage restriction restriction portion 58 are respectively connected to the front axial surface 34-2 ′ and the rear side. Displaces so that it is almost in contact with the axial plane 34-3 '. That is, the front annular flow path restriction restricting portion 56, the rear annular flow passage restriction restricting portion 56, and the rear annular flow passage restriction 58 are, as shown in FIGS.
• FIGS. 8 to 10 show modified examples of the seal ring 50 and the annular groove.
• the rear annular groove portion 60-2 has a rear extension groove portion 60-3 extending rearward by a predetermined length rearward at the inner side in the radial direction of the rear annular valve surface portion 54 of the annular valve surface.
• the rear annular seal part 50-2 extends into the rear extension groove part 60-3 of the rear annular groove part 60-2 and is fixedly fitted. In other words, this makes it possible to have a stronger resistance to the peeling force applied by the fluid flow.
• FIG. 9 is substantially the same as the example shown in FIG. 8 except that the shapes of the rear extension groove 60-3 and the rear annular seal portion 50-2 fitted thereto are slightly deformed. Are the same.
• the annular groove 60 of the on-off valve 26 has a front annular groove portion 60-1, a rear annular groove portion 60_2, and an annular raised portion 60_4 that is raised between both annular groove portions.
• the annular ridge 60-4 has substantially the same radius as the front annular valve face 52.
• the seal ring 50 is U-shaped in cross section including the axis of the fluid passage 30 and has an outer diameter larger than the front annular valve surface portion 52 and smaller than the rear annular surface portion 54. Since the rear annular seal part fitted in the rear annular groove 60-2 is fixed by being sandwiched by a narrow gap between the raised part and the rear annular seal, similarly, deformation due to negative pressure from the fluid is small. It becomes possible to prevent peeling of the seal ring.
• the embodiment of the male joint member of the pipe joint according to the present invention has been described above.
• the present invention is not limited to this, and can be applied to, for example, a female joint member.
• the shape of the seal ring can be various shapes with a reduced thickness of the rear annular seal portion 50-2 that is liable to peel off.

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• Engineering & Computer Science (AREA)
• General Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Quick-Acting Or Multi-Walled Pipe Joints (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Related Child Applications (1)

Publications (1)

Family

ID=36692107

Family Applications (1)

Country Status (4)

Cited By (1)

Families Citing this family (22)

Citations (3)

Family Cites Families (27)

• 2004
  • 2004-12-28 JP JP2004381060A patent/JP4499553B2/ja not_active Expired - Lifetime
• 2005
  • 2005-12-26 EP EP05820188.0A patent/EP1840442B1/en not_active Expired - Lifetime
  • 2005-12-26 WO PCT/JP2005/023706 patent/WO2006077716A1/ja not_active Ceased
• 2007
  • 2007-06-27 US US11/823,431 patent/US7708029B2/en not_active Expired - Lifetime

Patent Citations (3)

Non-Patent Citations (1)

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