WO2014192442A1 - フランジ結合構造及びこれに用いるシール体 - Google Patents
フランジ結合構造及びこれに用いるシール体 Download PDFInfo
- Publication number
- WO2014192442A1 WO2014192442A1 PCT/JP2014/060538 JP2014060538W WO2014192442A1 WO 2014192442 A1 WO2014192442 A1 WO 2014192442A1 JP 2014060538 W JP2014060538 W JP 2014060538W WO 2014192442 A1 WO2014192442 A1 WO 2014192442A1
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- Prior art keywords
- annular
- annular base
- seal body
- protrusion
- seal
- Prior art date
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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
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
- F16J15/12—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering
- F16J15/121—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering with metal reinforcement
- F16J15/122—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing with metal reinforcement or covering with metal reinforcement generally parallel to the surfaces
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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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
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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
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/24—Flanged joints characterised by the sealing means specially adapted for unequal expansion of the parts of the joint
Definitions
- the present invention relates to the connection between fluid pipes such as water pipes, gas pipes, plant pipes or the like, or connection between the fluid pipes and devices connected thereto (for example, air valves, fire hydrants, repair valves, etc.)
- the present invention relates to a flange coupling structure applied to the connection between devices and a seal body used therefor.
- flange coupling structures that are applied to connections between fluid pipes have been proposed (see, for example, Patent Document 1 and Patent Document 2), and various sealing bodies for sealing have been proposed.
- Patent Document 3 a seal body interposed between a flange portion of a first member (for example, a tube member) and a flange portion of a second member (for example, a tube member) is:
- a hard ring and a ring-shaped packing disposed on the inner periphery of the hard ring are provided, and the thickness of the hard ring is larger than the thickness of the ring-shaped packing.
- the seal body interposed between the flange portion of the first member (for example, a tube member) and the flange portion of the second member (for example, the tube member) is: A ring-shaped packing body and a plurality of compression limiting pieces embedded in the packing body at intervals in the circumferential direction are provided.
- the first and second members are coupled with the seal body sandwiched between the flange portions of the first and second members, the first member and the second member are moved toward each other by a plurality of compression limiting pieces. Movement is restricted, and thereby excessive compression of the ring packing is suppressed.
- the seal body disclosed in Patent Document 3 it is interposed between a first member (for example, a cylinder) and a second member (for example, a cylinder head), but is formed from an elastic body such as rubber. And a ring-shaped reinforcing ring that reinforces the sealing ring.
- the ring-shaped reinforcing ring is integrally provided on the sealing ring by a mold.
- the rigidity of the sealing ring body is increased by the ring-shaped reinforcing ring body, and deformation of the sealing ring body (deformation upon replacement, deformation due to performance deterioration, etc.) is suppressed.
- JP 7-332557 A Japanese Patent Laid-Open No. 9-292071 Japanese Utility Model Publication No. 51-85155
- a T-shaped tube 102 that defines a T-shaped flow path includes three connecting tube portions 104, 106, and 108.
- the connecting tube portion 104 is, for example, a tube member that extends upstream.
- the connecting pipe 106 is connected to, for example, a pipe member 114 extending downstream, and the connecting pipe 108 is connected to an air valve 118, for example, via a repair valve 116, and these connections are described above.
- a flange connection structure is applied.
- connection pipe portion 104 of the T-shaped tube 102 and the pipe member 110 are connected by interposing a sealing body 124 between the flange portion 120 of the connection pipe portion 104 and the flange portion 122 of the pipe member 110 for coupling.
- the bolts are inserted through the through holes of the flange part 120, the seal body 124, and the flange part 122, and the nuts are screwed onto the male threaded parts of the bolts protruding through the through holes, whereby the flange part 120 of the T-shaped tube 102 and The flange portion 122 of the pipe member 110 is coupled via the seal body 124.
- a through hole for inserting a coupling bolt is provided in a packing (packing body) that performs a sealing function, and therefore an earthquake or the like occurs. If a large bending stress is applied to the flange connection structure, the packing (packing body) may move relative to the bolt and the packing (packing body) may be damaged. If this packing (packing body) is damaged, There is a possibility that the sealing performance (airtightness) may be impaired. This sealing problem is more likely to occur in the coupling structure between the connecting pipe portion 108 of the T-shaped tube 102 and the repair valve 116 and in the coupling structure between the repair valve 116 and the air valve 118.
- the sealing ring (functioning as a packing) is not fixed.
- the ring is easily moved and deformed, and if this moving deformation becomes large, it may be damaged, and there is the same problem as described above.
- An object of the present invention is to provide a flange coupling structure that is excellent in earthquake resistance and that can be easily and easily coupled as in the prior art.
- Another object of the present invention is to provide a seal body excellent in earthquake resistance.
- the flange coupling structure includes a first member having a first annular flange portion, a second member having a second annular flange portion, and the first annular flange portion and the second member of the first member.
- a seal body interposed between the second annular flange portion and the first annular flange portion, the second annular flange portion, and a bolt that is inserted through the through hole of the seal body,
- the seal body has an annular base portion formed of a metal plate and an elastic seal portion provided integrally with the annular base portion, and the through holes are spaced circumferentially from the annular base portion.
- a plurality of the elastic seal portions are provided so as to cover the annular base portion, and the elastic seal portion of the seal body includes the first annular flange portion of the first member and the second member of the second member. It is characterized by sealing between the annular flange portions.
- the elastic seal portion of the seal body is integrally provided so as to cover from one surface of the inner peripheral portion of the annular base portion to the other surface through the inner peripheral surface. It is characterized by being.
- a first protrusion that contacts the first annular flange portion of the first member is provided on one surface side of the annular base portion of the seal body, and the other surface side. Is provided with a second protrusion that abuts against the second annular flange portion of the second member.
- a plurality of the first protrusions of the seal body are provided on one side of the annular base portion at intervals in the circumferential direction, and the second protrusion of the seal body is provided.
- a plurality of portions are provided on the other surface side of the annular base portion at intervals in the circumferential direction.
- the annular base is formed of first and second metal plates, and the first protrusion of the annular base is circumferential in the circumferential direction of the first metal plate.
- the second protrusion of the annular protrusion is formed by bending a plurality of portions in the circumferential direction of the second metal plate, and is formed by bending the first metal.
- the plate and the second metal plate are overlapped so that the first protrusion is on one side of the seal body and the second protrusion is on the other surface side of the seal body. It is characterized by comprising.
- the inner peripheral portion of the annular base portion of the seal body is subjected to a rough surface processing for roughening the surface and / or a hole processing for penetrating it. It is characterized by.
- the seal body according to the present invention is a seal body interposed between the first annular flange portion of the first member and the second annular flange portion of the second member, An annular base formed from a metal plate; and an elastic seal portion provided integrally with the annular base, and through-holes through which bolts are inserted are spaced apart from each other in the circumferential direction.
- a plurality of elastic seal portions are provided so as to cover the annular base portion, and the elastic seal portions are provided between the first annular flange portion of the first member and the second annular flange portion of the second member. It is characterized by sealing.
- the seal body interposed between the first annular flange portion of the first member and the second annular flange portion of the second member is an annular formed from a metal plate. Since the base and the elastic seal portion provided on the annular base are provided with a plurality of through holes, the annular base is connected between the first and second annular flanges by bolts and nuts. Therefore, the movement of the elastic seal portion can be suppressed, and damage due to the movement can be prevented. In addition, since the elastic seal portion is integrally provided on the annular base portion, it is possible to suppress the movement of the elastic seal portion and prevent the breakage thereof.
- the elastic seal portion of the seal body is integrally provided so as to cover from one surface of the inner peripheral portion of the annular base portion to the other surface through the inner peripheral surface. Therefore, the contact area between the elastic seal portion and the annular base portion is large, and this elastic seal portion can be more integrally provided on the annular base portion.
- the first protrusion is provided on one side of the annular base portion of the seal body, and the second protrusion is provided on the other surface side. Since the portion abuts on the first annular flange portion of the first member, excessive deformation of the elastic seal portion on one side of the seal body can be prevented, and the second protrusion is the second flange of the second member. By contacting the part, excessive deformation of the elastic seal part on the other surface side of the seal body can be prevented.
- the first protrusion of the seal body is annularly provided on one side of the annular base
- the second protrusion is annularly provided on the other surface of the annular base. Since it is provided, the first protrusion can stably act on the first annular flange portion of the first member to prevent excessive deformation of the elastic seal portion on one side of the seal body.
- the protrusion can stably act on the second annular flange portion of the second member to prevent excessive deformation of the elastic seal portion on the other surface side of the seal body.
- a plurality of first protrusions of the sealing body are provided on the one surface side of the annular base portion at intervals in the circumferential direction, and the second protrusions are formed on the annular base portion. Since a plurality of circumferentially spaced spaces are provided on the other surface side, the plurality of first protrusions stably act on the first annular flange of the first member even if configured in this manner. Excessive deformation of the elastic seal portion on one side of the seal member can be prevented, and the plurality of second protrusions act on the second annular flange of the second member to cause excessive deformation of the elastic seal member on the other surface side of the seal member. Can be prevented from being deformed.
- the first protrusion of the annular base is formed by bending a plurality of circumferential portions of the first metal plate, and the second protrusion of the annular protrusion. Since the protrusion is formed by bending a plurality of portions in the circumferential direction of the second metal plate, the first protrusion and the second protrusion can be easily manufactured by, for example, pressing. Further, since the annular base portion is formed so that the first protrusion is on one side of the seal body and the second protrusion is on the other surface side of the seal body, the annular base portion is easily manufactured. be able to.
- the inner peripheral portion of the annular base portion of the sealing body is subjected to roughening for roughening the surface and / or drilling for penetrating it.
- the contact area between the annular base portion and the elastic seal portion is increased, whereby the elastic seal portion can be provided more firmly and integrally with the annular base portion.
- the basic configuration is substantially the same as the seal body of the flange coupling structure of the present invention. It is possible to securely fix between the flange portions, to suppress the movement of the elastic seal portion to prevent the breakage thereof, and to provide the elastic seal portion integrally with the annular base portion.
- Sectional drawing which shows a part of 6th form of a sealing body Sectional drawing which shows a part of 7th form of a sealing body.
- the perspective view which shows the metal plate in the sealing body of FIG. (A) Sectional drawing of the sealing body which bent one metal plate which comprises an annular base (b) Sectional drawing of the sealing body which bent the other metal plate which comprises an annular base.
- FIG. 19 is a cross-sectional view taken along line XVII-XVII in FIG.
- FIG. 19 is a cross-sectional view taken along line XVIII-XVIII in FIG. Sectional drawing which shows a part of 12th form of a sealing body.
- the front view of the seal body in FIG. The fragmentary sectional view which shows the inside of the seal body of FIG. Sectional drawing which shows a part of 13th form of a sealing body.
- the simplification figure which shows an example of the piping structure to which the conventional flange joint structure is applied.
- the illustrated seal body 2 is integrated with an annular base portion 4 and an inner peripheral portion of the annular base portion 4. And an annular elastic seal portion 6 that is provided.
- the annular base 4 is formed from a metal plate such as stainless steel.
- the annular base 4 is provided with a plurality of (four in this embodiment) through holes 8 at substantially equal intervals in the circumferential direction.
- the inner peripheral portion of the annular base portion 4 refers to the inner peripheral surface portion of the inner peripheral surface of the annular base portion 4 and the surfaces adjacent to the inner peripheral surface (upper surface and lower surface in FIG. 2).
- the elastic seal portion 6 is formed of, for example, synthetic rubber and is provided so as to cover the inner peripheral portion of the annular base portion 4. As shown in FIG. 2, the outer peripheral portion of the elastic seal portion 6 protrudes radially outward, and one first seal portion 10 covers one inner peripheral surface (the upper surface in FIG. 2) of the annular base portion 4, and the other The second seal portion 12 covers the other surface (the lower surface in FIG. 2) of the inner peripheral portion of the annular base portion 4, and the connection site 14 connecting the first and second seal portions 10, 12 is the inner portion of the annular protrusion portion 4. Covers the circumference.
- the elastic seal portion may be provided as shown in FIG. In FIG. 4, in the elastic seal portion 6 ′ of the seal body 2 ′, there is no connection site that covers the inner peripheral surface of the annular base portion 4, and the first seal portion 10 of the elastic seal portion 6 ′ At least a part of one side of the inner peripheral part (the upper surface in FIG. 4) is covered, and the second seal part 12 covers at least a part of the other side (the lower surface in FIG. 4) of the inner peripheral part of the annular base 4, and thus Even if a simple seal body 2 'is used, substantially the same function and effect as the seal body 2 shown in FIGS. 1 and 2 can be achieved.
- Such a seal body 2 can be formed as follows. That is, the annular base portion 4 is set in a fixed mold (not shown), and a movable mold (not shown) is moved and clamped with respect to the fixed mold, and is defined by the fixed mold and the movable mold.
- synthetic rubber is poured into the formed molding space, and the elastic seal portion 6 as shown in the figure can be integrally formed on the inner peripheral portion of the annular base portion 4 by such vulcanization molding.
- the seal body 2 is mounted between the first annular flange portion 18 of the first member 16 and the second annular flange portion 22 of the second member 20 as shown in FIG.
- the first annular flange portion 18 of the first member 16 is provided with a plurality of (four in this embodiment) through holes 24 corresponding to the plurality of through holes 8 provided in the annular base portion 4 of the seal body 2.
- the second annular flange portion 22 of the second member 20 is also provided with a plurality (four in this embodiment) of through holes 26 corresponding to the plurality of through holes 8 of the seal body 2.
- connection between the first member 16 and the second member 20 is performed as follows.
- the seal body 2 is disposed between the first annular flange portion 18 of the first member 16 and the second annular flange portion 22 of the second member 20, and in this state, the through hole 24 of the first annular flange portion 18, the seal
- the male screw portion 30 of the coupling bolt 28 is inserted through the through hole 8 of the annular base portion 4 of the body 2 and the through hole 26 of the second annular flange portion 22, and then the male screw portion of the bolt 28 protruding from the second annular flange portion 22.
- a nut 32 is screwed onto and tightened to 30 and thus the first member 16 and the second member 20 can be connected and joined as required.
- a nut 32 for example, if a locking nut (trade name: hard lock nut) manufactured and sold by Hard Rock Industry Co., Ltd. is used, the earthquake resistance is further improved.
- a seal is provided between the end surface of the first annular flange portion 18 of the first member 16 (so-called gasket seat) and the end surface of the second annular flange portion 22 of the second member 20 (so-called gasket seat). Since the elastic seal portion 6 of the body 2 is interposed in a compressed state, the first annular flange portion 18 and the second annular flange portion 22 can be reliably sealed by the elasticity of the elastic seal portion 6. Further, since the male screw portion 30 of the coupling bolt 28 extends through the through hole 8 of the annular base portion 4 of the seal body 2, the movement of the annular base portion 4 is prevented by the male screw portion 30. The relative movement of the elastic seal portion 6 is also suppressed.
- the elastic seal portion 6 of the seal body 2 is suppressed, and as a result, the elastic seal portion 6 is prevented from being damaged. In addition, the sealing performance by the elastic seal portion 6 can be maintained.
- the first member 16 and the second member 20 are devices connected to fluid pipes such as water pipes, gas pipes, and plant pipes that are pipe members, and fluid pipes such as air valves, fire hydrants, and repair valves. Yes, this seal body 2 can be used as described above in the flange coupling structure for connecting and coupling them.
- the elastic seal portion 6 is configured as follows so as to be more firmly integrated.
- components that are substantially the same as those described above are given the same reference numerals, and descriptions thereof are omitted.
- the inner peripheral portion of the annular base portion 4A is roughened, and rough surface areas 42, 44, and 46 having small irregularities are provided on a part of the surface.
- the rough surface region 42 is provided on one surface of the inner peripheral portion of the annular base 4 where the first seal portion 10 of the elastic seal portion 6 is provided, and the second seal portion 12 of the elastic seal portion 6 is provided.
- a rough surface region 44 is provided on the other surface of the inner peripheral portion of the base portion 4, and a rough surface region 46 is further provided on the inner peripheral surface of the annular base portion 4.
- the rough surface regions 42, 44, and 46 can be formed by performing rough surface processing such as shot blast processing and sand blast processing.
- Other configurations of the third embodiment are substantially the same as those of the first embodiment described above.
- the rough surface regions 42, 44, 46 are provided on one side, the other surface, and the inner peripheral surface of the inner peripheral portion of the annular base portion 4A, but it is not necessary to provide them in all these regions. By providing in any one of the three regions, or in any two of these regions, the same effect as described above can be achieved.
- a plurality of communication holes 48 are provided in the inner peripheral portion of the annular base portion 4B at intervals in the circumferential direction.
- the communication hole 48 communicates from one side of the annular base 4B to the other side.
- the communication holes 48 can be formed by drilling, and the number thereof can be set as appropriate. For example, six or eight holes may be provided.
- a plurality of communication holes 48 are provided in the inner peripheral portion of the annular base portion 4B, and the aforementioned rough surface regions (regions indicated by numbers 42, 44, and 46 in FIG. 5) are provided in the inner peripheral portion. In this case, the annular base portion 4B and the elastic seal portion 6B can be more firmly integrated.
- eight through holes 8 are provided in the annular base portion 4B at intervals in the circumferential direction.
- the first and second annular flange portions can be used for connecting and coupling the first and second members provided with eight through holes, It can also be used for connecting and connecting the first and second members having four through holes in the first and second annular flange portions, and in this way there are many types (for example, for 4 fastenings, 6 fastenings)
- the eight through holes 8 can be used for connecting and fastening various kinds of first and second members, and standardization of the seal body 2B can be achieved.
- the annular base portion 4C of the seal body 2C is provided with a protrusion for preventing excessive deformation of the elastic seal portion 6C.
- the seal body 2C of the fifth embodiment includes an annular base portion 4C and an elastic seal portion 6C provided on the inner peripheral portion of the annular base portion 4C.
- the annular base portion 4C is spaced apart in the circumferential direction.
- a plurality of (for example, four) through holes 8 are provided.
- a plurality (for example, four) of communication holes 48 may be provided at an inner circumferential portion (a portion where the elastic seal portion 6C is provided) at intervals in the circumferential direction.
- the communication hole 48 and the configuration related thereto are substantially the same as those of the fourth embodiment shown in FIGS. 6 and 7.
- the elastic seal portion 6C is formed into the annular base portion 4C as described above. It is convenient because it becomes more firmly integrated.
- the first ring-shaped member 52 is provided on the one surface side of the annular base portion 4C on the radially outer side of the portion where the communication hole 48 is disposed, and the first ring-shaped member 52 will be described later. It functions as a first protrusion that prevents excessive deformation of the elastic seal portion 6C on one side of the annular base portion 4C.
- a second ring-shaped member 54 is provided at a portion radially outside the portion where the communication hole 48 is disposed, and the second ring-shaped member 54 is, as will be described later, It functions as a second protrusion that prevents excessive deformation of the elastic seal portion 6C on the other surface side of the annular base portion 4C.
- the first and second ring-shaped members 52 and 54 can be formed of a hard material such as stainless steel or hard plastic.
- the elastic seal portion 6C is provided so as to cover the first and second ring-shaped members 52, 54 (specifically, the inner peripheral surface and the upper surface thereof).
- a pair of first annular seal protrusions 56 are provided on one surface (upper surface in FIG. 8) of the elastic seal portion 6C at intervals in the radial direction, and on the other surface (lower surface in FIG. 8) in the radial direction.
- a pair of second annular seal protrusions 58 are provided at intervals. Three or more of the first and second annular seal protrusions 56 and 58 may be provided in order to improve the sealing performance.
- Other configurations of the flange coupling structure of the second embodiment are substantially the same as those of the first embodiment described above.
- the seal body 2C is manufactured as follows. First, the first ring-shaped member 52 (first protrusion) is fixed to a predetermined position on one side of the annular base portion 4C by a fixing means such as an adhesive or welding, and the adhesive or welding is fixed to a predetermined position on the other surface.
- the second ring-shaped member 54 (second protrusion) is fixed by means. Then, this annular base 4C (with the first and second ring-shaped members 52 and 54 fixed) is set in a fixed mold (not shown), and a movable mold (not shown) is set with respect to the fixed mold. ) Is moved and clamped, for example, synthetic rubber is poured into the molding space, and an elastic seal portion 6C as shown in the figure is integrally formed on the inner peripheral portion of the annular base portion 4C by such vulcanization molding.
- the first member 16 and the second member 20 are connected and connected in the same manner as described above.
- the first ring-shaped member 52 is a synthetic rubber layer as can be understood from FIG. 64, abuts against the end surface (gasket seat 60) of the first annular flange portion 18 through this, whereby the amount of elastic deformation of the elastic seal portion 6C is constant on one side of the annular base portion 4C, and the elastic deformation on this one side is reduced. It can be prevented from becoming excessive.
- the second ring-shaped member 54 abuts against the end surface (gasket seat 62) of the second annular flange portion 22 via the synthetic rubber layer 66, whereby the elastic seal portion 6C is also formed on the other surface side of the annular base portion 4C.
- the amount of elastic deformation becomes constant, and the elastic deformation on the other surface side can be prevented from becoming excessive.
- the pair of first annular seal protrusions 56 elastically act on the end surface (gasket surface 60) of the first annular flange 18 on one side of the seal body 2C.
- the space between the first annular flange portion 18 and the seal body 6C can be surely sealed, and the pair of second annular seal protrusions 58 are end surfaces of the second annular flange portion 22 on the other surface side of the seal body 2C. Since it acts on the (gasket surface 62) elastically, the gap between the second annular flange portion 22 and the seal body 6C can be reliably sealed.
- the seal body 6C when the seal body 6C is interposed between the first annular flange portion 18 and the second annular flange portion 22 and fastened using a coupling bolt and a nut (both not shown), conventionally, during construction Due to poor fastening (for example, non-uniform tightening of a plurality of fastening portions, etc.), the crushing margin of the sealing body 6C differs in each portion, and the end face (gasket face 60) and / or the second annular face of the first annular flange portion 18 is different.
- the end surface (gasket surface 62) of the flange portion 22 is slanted, causing a water stop failure.
- first and second ring-shaped members 52 and 54 are provided in this way, and the gasket surfaces 60 and 62 of the first and second members 18 and 22 are first through the synthetic rubber layers 64 and 66, respectively. And by tightening until it comes into contact with the second ring-shaped members 52, 54, the dimensions of the plurality of fastening parts are made uniform without performing torque management at the time of fastening, thereby making it very easy to prevent fastening failures during construction. In addition, the workability can be improved.
- the first and second protrusions are formed from the first and second ring-shaped members 52 and 54 and are provided in a ring shape.
- Short columnar members, arc-shaped members, and the like may be provided at intervals in the circumferential direction, and particularly provided in the vicinity of the through-hole 8 to which a tightening force is applied, thereby forming the first and second protrusions. .
- FIG. 9 shows a sixth form of the seal body.
- the basic structure of the seal body 2G of the sixth embodiment is substantially the same as that of the fifth embodiment of FIG. 8, and the first ring-shaped member 52 is provided on one surface of the annular base portion 4G.
- a second ring-shaped member 54 is provided on the other surface, the first ring-shaped member 52 functions as a first protrusion, functions to keep the amount of elastic deformation on one side of the elastic seal portion 6G constant, and the second The ring-shaped member 54 functions as a second protrusion and functions to keep the amount of elastic deformation on the other surface side of the elastic seal portion 6G constant.
- the first and second ring-shaped members 52 and 54 can be attached to the annular base 4G in the same manner as the fifth embodiment described above.
- the upper surface of the first ring-shaped member 52 is exposed to the outside, and one surface side of the elastic seal portion 6G protrudes from the upper surface of the first ring-shaped member 52 to one surface side, and the first ring is in a connected state.
- the upper surface of the member 52 is in direct contact with the end surface (gasket seat 60) of the first flange portion 18.
- the upper surface of the second ring-shaped member 54 is also exposed to the outside, and the other surface side of the elastic seal portion 6G protrudes from the upper surface of the second ring-shaped member 54 to the other surface side, and is connected to the second ring.
- the upper surface of the member 54 is in direct contact with the end surface (gasket seat 62) of the second flange portion 22 (see FIG. 8 for the first and second members 16 and 20).
- the seal body 2G of the sixth embodiment integrally casts the annular base portion 4G and the elastic seal portion 6G by pouring synthetic rubber and vulcanization molding as described above. Can be formed.
- the communication hole of the annular base portion 4G is omitted. Therefore, the elastic seal portion 6G is integrally formed on the inner peripheral portion of the annular base portion 4G over one surface, the inner peripheral surface, and the other surface. Provided.
- the seal body 2G of the sixth embodiment When the seal body 2G of the sixth embodiment is used, the basic configuration is substantially the same as that of the fourth embodiment, and therefore substantially the same effect as that of the case of using the fourth embodiment is achieved. Since the pair of first annular seal protrusions 56 and second annular seal protrusions 58 are supported by the annular base portion 4G, the first flange portion 18 and the second flange portion 22 of the first flange portion 18 are similar to the fourth embodiment. The gap can be sealed stably and reliably.
- FIG. 10 shows a seventh form of the seal body.
- the annular base is modified as compared with the first embodiment.
- washer members 70 and 71 having a desired thickness are provided corresponding to the through holes 8 provided in the annular base portion 4D.
- the washer members 70 and 71 are provided so that their insertion holes 72 and 73 are aligned with the through holes 8 of the annular base portion 4D, and are fixed to the annular base portion 4D by fixing means such as an adhesive or welding.
- the washer members 70 and 71 are not necessarily fixed as described above, and a coupling bolt (not shown) is inserted through the insertion holes 72 and 73 of the washer members 70 and 71 and the through hole 8 of the annular base 4D.
- one washer member 70 may be provided on one side of the annular base 4D, and the other washer member 71 may be provided on the other side.
- one side portion of the elastic seal portion 6 protrudes to one side of the washer member 70, and the other side portion protrudes to the other surface side of the other washer member 71.
- the end surface of the first annular flange portion 18 is secured. It is located between the (gasket seat 60) and the end surface (gasket seat 62) of the second annular flange portion 22 to seal between them.
- the washer member 70 abuts against the concave stepped portion 74 of the first annular flange portion 18, whereby the interval between the annular base portion 4 ⁇ / b> D and the end surface (gasket seat 60) of the first annular flange portion 18, in other words, the annular base portion 4 ⁇ / b> D.
- the amount of elastic deformation of the elastic seal portion 6 on one side of the surface becomes constant, and the elastic deformation on the one side can be prevented from becoming excessive.
- the other washer member 71 is in contact with the concave step 75 of the second annular flange portion 22, whereby the distance between the annular base portion 4 ⁇ / b> D and the end surface (gasket seat 62) of the second annular flange portion 22, in other words, the annular shape.
- the elastic deformation amount of the elastic seal portion 6 on the other surface side of the base portion 4D becomes constant, and it is possible to prevent the elastic deformation on the other surface side from becoming excessive.
- one washer member 70 functions as a first protrusion that contacts the first annular flange portion 18 (specifically, the concave step portion 74 thereof), and the other washer member 71 functions as the second annular flange portion 22. (Specifically, it functions as a second protrusion abutting against the concave step portion 75), and even if configured in this way, the first and second ring-shaped members 52 of the fifth embodiment shown in FIG. The same effect as that provided by 54 can be obtained.
- FIG. 11 shows an eighth form of the seal body.
- a short sleeve member 79 is used instead of the washer members 70 and 71 in the seventh embodiment of FIG.
- a short sleeve member 76 having a desired length is inserted into the through hole 8 of the annular base 4E, and is fixed to the annular base 4E by an adhering means such as an adhesive or welding.
- a coupling bolt (not shown) is inserted through the sleeve hole 79 of the short sleeve member 76 of the seal body 2E, and one end 77 thereof is annular.
- the other end 78 protrudes from the base 4E to the one side (upward in FIG. 11), and the other end 78 protrudes from the annular base 4E to the other side (downward in FIG. 11). Connected to the street.
- the elastic seal portion 6 of the seal body 2E is positioned between the end surface (gasket seat 60) of the first annular flange portion 18 and the end surface (gasket seat 62) of the second annular flange portion 22. Seal between the two. Further, the one end 77 of the short sleeve member 76 abuts on the concave step 74 of the first annular flange 18 so that the amount of elastic deformation of the elastic seal 6 on one side of the annular base 4E can be made constant.
- one end 77 of the short sleeve member 76 is a first protrusion that abuts the first annular flange 18 (specifically, the concave step 74).
- the other end portion 78 of the short sleeve member 76 functions as a second protrusion that abuts against the second annular flange portion 22 (specifically, the concave step portion 75).
- the annular base 4F of the seal body 2F is plastically processed and the first and second protrusions are integrally provided.
- a plurality (eight in this embodiment) of through holes 8 are provided in the annular base portion 4F at intervals in the circumferential direction.
- a first protrusion is provided in relation to every other four through holes 8, and a second protrusion is provided in relation to the remaining four through holes 8.
- Such an annular base 4F can be manufactured, for example, as follows. That is, eight through-holes 8 are formed in the annular metal plate at intervals in the circumferential direction, and then, for example, pressed in a predetermined direction (upward in FIG. 13) in every other through-hole 8 portion.
- the first protrusion 82 (which constitutes the first protrusion) that projects to one side (upper side in FIG. 13) is formed, and then the remaining through-hole 8 is formed in a direction opposite to the predetermined direction ( For example, pressing is performed in the downward direction in FIG. 13 to form a second protruding portion 84 (which constitutes the second protruding portion) that protrudes to the other side (the lower side in FIG. 12).
- the sealing body 2F shown in FIG.12 and FIG.13 can be manufactured by providing the elastic seal part 6 integrally as mentioned above in the inner peripheral part of such an annular base part 4F.
- the annular base 4H of the seal body 2H is composed of a pair of metal plates, and the first and second protrusions are formed by plastic working.
- the annular base 4H is composed of a pair of ring-shaped metal plates, that is, a first metal plate 86 and a second metal plate 88.
- the first and second metal plates 86 and 88 have substantially the same configuration.
- the first metal plate 86 (second metal plate 88) will be described.
- the first metal plate 86 (second metal plate 88) is made of, for example, stainless steel, and a plurality (four in this embodiment) of through holes 8 are provided on the outer peripheral side thereof at intervals in the circumferential direction. Then, a coupling bolt (not shown) is inserted through these through holes 8.
- a plurality (four in this embodiment) of communication holes 90 and protrusions 92 are provided on the inner peripheral side of the first metal plate 86 (second metal plate 88) at intervals in the circumferential direction. ing.
- the plurality of through holes 8, the plurality of communication holes 90, and the protrusions 92 are provided in the radial direction.
- the plurality of through holes 8 and the plurality of communication holes are provided.
- the holes 90 and the protrusions 92 may be provided in a staggered manner in the circumferential direction.
- the number of the through holes 8 is the same as the number of the communication holes 90 and the protrusions 92.
- the number of the communication holes 90 and the protrusions 92 is larger than the number of the through holes. It may be provided on both sides of the hole 8.
- the first metal plate 86 (second metal plate 88) can be easily manufactured as follows, for example. First, the central portion of the disk-shaped metal plate 86 (88) is punched out by press working (first press working) to form a ring shape. Simultaneously with the first pressing (or in the second pressing after the first pressing), the through hole 8 is formed by punching in a circular shape, and the tongue-shaped piece (projecting portion 92) is punched into a U-shape. Then, the tongue-like piece is plastically deformed by press working or the like, and is bent, for example, radially inward to form the protrusion 92.
- the protrusion 92 formed by bending the tongue-like piece is the first protrusion.
- the opening after the tongue-shaped piece is bent functions as the communication hole 90.
- this seal body 2H is performed as follows. First, the first and second metal plates 86 and 88 are overlapped as required so that the protrusions 92 are located on both sides, and fixed or temporarily fixed by a fixing means such as an adhesive or welding as necessary. To do. In this overlapped state, as shown in FIG. 14, the protrusion 92 of the first metal plate 86 is located on one side of the seal body 2H and functions as the first protrusion, and the second metal plate 88 The protrusion 92 is located on the other surface side of the seal body 2H and functions as a second protrusion. Further, the through holes 8 of the first and second metal plates 86 and 88 are aligned, and their communication holes 90 are also aligned. Is consistent.
- the annular base 4H (first and second metal plates 86 and 88) is set in a fixed mold (not shown), and a movable mold (not shown) is moved with respect to the fixed mold.
- the mold is clamped, for example, synthetic rubber is poured into the molding space, and the elastic seal portion 6H is integrally formed on the inner peripheral portion of the annular base portion 4H by such vulcanization molding.
- the protrusion 92 (first protrusion) of the first metal plate 86 is connected to the first member 16 via the synthetic rubber layer 94. It abuts against the end surface of the first annular flange portion 18 (see FIG. 10 (gasket seat 60)), thereby preventing excessive elastic deformation of the elastic seal portion 6H on one side of the annular base portion 4H. Further, the protrusion 92 of the second metal plate 88 abuts against the end surface (see FIG.
- a first annular seal protrusion 97 is provided for sealing between the end surface of the first annular flange portion 18 (see FIG. 10 (gasket surface 60)), and the other surface. Since the second annular seal portion 98 for sealing between the end surface of the second annular flange portion 22 (see FIG. 10 (gasket surface 62)) is provided on the side, as described above, The first and second annular flange portions 18 and 22 (see FIG.
- first and second metal plates 86 and 88 are formed with the protrusions 92 by plastic working (bending), so that the protrusions 92 can be easily provided without the need for separate members. it can.
- the seal body 2K in the seal body 2K, as in the seal body 2H of the tenth embodiment, the seal body 2K is formed from a pair of ring-shaped metal plates, that is, the first metal plate 130 and the second metal plate 132.
- the annular base 4K is configured, and a part of the first metal plate 130 and a part of the second metal plate 132 are bent to form protrusions (first protrusion 134 and second protrusion 136). It is formed.
- first protrusion 134 and second protrusion 136 first protrusion 134 and second protrusion 136
- a plurality (four in this embodiment) of through holes 8 are provided in the annular base portion 4K at intervals in the circumferential direction, and every two of these four through holes 8 are provided.
- a first protrusion 134 is provided in association with the hole 8
- a second protrusion 136 is provided in association with the remaining two through holes 8.
- Such an annular base 4K can be manufactured as follows, for example. That is, four through holes 8 are formed in the annular first metal plate 130 at intervals in the circumferential direction. Tongue pieces (first protrusions 134 before bending) and communication holes 90 are alternately formed along the circumferential direction on the radially inner side of the through holes 8. Similarly, four through holes 8 are formed in the annular second metal plate 132 at intervals in the circumferential direction. Tongue pieces (second protrusion 136 before bending) and communication holes 90 are alternately formed along the circumferential direction on the radially inner side of the through hole 8.
- the tongue piece of the first metal plate 130 and the communication hole 90 of the second metal plate 132, and the communication hole 90 of the first metal plate 130 and the tongue piece of the second metal plate 132 are arranged to overlap each other. To do. Then, the tongue piece of the first metal plate 130 is bent toward the communication hole 90 of the second metal plate 132 so as to sandwich the second metal plate 132, and the second metal plate 130 is pressed. The tongue piece 132 is bent toward the communication hole 90 of the first metal plate 130 and is pressed so as to sandwich the first metal plate 130.
- the tongue-shaped piece of the first metal plate 130 embraces the second metal plate 132, and the tongue-shaped piece of the second metal plate 132 embraces the first metal plate 130, thereby
- the 1 metal plate 130 and the 2nd metal plate 132 are comprised integrally.
- the first protrusion 134 (the first protrusion 134) in which the tongue-like piece is bent is used. 2, and the opening provided when the tongue-shaped piece is bent toward the first metal plate 130 (second metal plate 132) functions as the communication hole 90.
- the seal body 2K is manufactured as follows.
- the annular base 4K (first metal plate 130 and second metal plate 132) is set in a fixed mold (not shown), and a movable mold (not shown) is moved with respect to the fixed mold.
- the mold is clamped and, for example, synthetic rubber is poured into the molding space, and the elastic seal portion 6K is integrally formed on the inner peripheral portion of the annular base 4K by such vulcanization molding.
- the annular base 4J of the sealing body is formed from a single metal plate, and the first and second protrusions are formed by plastic working, as in the tenth embodiment.
- the annular base 4J of the seal body is composed of a single metal plate, that is, a metal plate 99.
- the metal plate 99 is formed of, for example, stainless steel, and a plurality of (four in this embodiment) through-holes 8 are provided on the outer periphery thereof at intervals in the circumferential direction.
- a coupling bolt (not shown) is inserted through the through hole 8.
- the communication hole 90 and the protrusions 92A and 92B are provided on both sides of each of the plurality of through holes 8.
- the protrusion 92A located on the downstream side of the through hole 8 when viewed in the clockwise direction is bent to one side of the metal plate 99 (annular base 4J) as shown in FIG.
- the protrusion 92B that functions as the upstream side of the through-hole 8 when viewed in the clockwise direction is bent to the other surface side of the metal plate 99 (annular base portion 4J) to form the second protrusion. It functions as a part.
- the communication holes 90 and the protrusions are provided on both sides of each through-hole 8, but it is not necessary to provide such a connection.
- a plurality of communication holes 90 and protrusions may be provided in a staggered pattern in the circumferential direction, or a plurality of communication holes 90 and protrusions (first protrusion).
- 92A, the second protrusion 92B may be provided so as to coincide with the plurality of through holes 8 in the radial direction (in this case, the number of the communication holes 90 is the same as the number of the through holes 8). Since the protrusions 92A and the second protrusions 92B are alternately arranged, the number of the first and second protrusions 92 and 92B is half the number of the through holes 8).
- the metal plate 99 can be easily manufactured as follows, for example, as in the tenth embodiment. First, the central part of the disk-shaped metal plate 89 is punched out by press working (first press working) to form a ring shape. Simultaneously with the first pressing (or in the second pressing after the first pressing), the through-hole 8 is formed by punching in a circular shape, and the tongue-shaped piece (projection 92A) is punched into a U-shape. , 92B), and then the tongue-like piece is plastically deformed as required to form the protrusions (first protrusions 92A, 92B).
- the tongue-like piece located on the downstream side of the through-hole 8 when viewed in the clockwise direction in FIG. 18 is radially inward on one side of the metal plate 99 (annular base 4J) as shown in FIG.
- the first protrusion 92A is formed by bending
- the communication hole 90 corresponding to the first protrusion 92A is formed by bending the first protrusion 92A.
- the tongue-like piece positioned on the upstream side of the through hole 8 when viewed in the clockwise direction is bent radially inward on the other surface side of the metal plate 99 (annular base portion 4J).
- the two protrusions 92B are formed, and the communication holes 90 corresponding to the second protrusions 92B are formed by bending the two protrusions 92B.
- the annular base portion 4J made of the metal plate 99 is vulcanized and molded in the same manner as in the tenth embodiment, so that an elastic seal portion (not shown) is integrated with the inner peripheral portion of the annular base portion 4J.
- the seal body can be formed.
- a plurality of portions of the metal plate 99 are punched to form tongue-like pieces, and these tongue-like pieces are bent as required to form protrusions (first protrusion 92A and second protrusion 92B).
- the present invention is not limited to such a shape.
- a tongue-like piece having a plurality of tongues is formed by punching into another shape such as an E shape or an uneven shape, and a plurality of tongues of the tongue-like piece are formed. May be bent to one side, the other side, or both sides of the metal plate 99 (annular base 4J) to form protrusions (first protrusion 92A, second protrusion 92B).
- the tongues of the metal plate 99 are bent inward in the radial direction to form the protrusions (first protrusion 92A, second protrusion 92B), but this is not limitative. Instead, the tongues may be bent outward in the radial direction or laterally in the circumferential direction to form protrusions (first protrusion 92A, second protrusion 92B).
- FIGS. 21 to 23 show a twelfth form of the seal body.
- an annular base portion 4L of the seal body 2L is constituted by a single ring-shaped metal plate.
- the entire annular base 4L is covered with synthetic rubber.
- the twelfth seal body 2L includes an annular base portion 4L, an elastic seal portion 6L provided so as to cover the entire annular base portion 4L, and a first ring-shaped member 52 provided on one surface of the annular base portion 4L. And a second ring-shaped member 54 provided on the other surface of the annular base portion 4L, and the annular base portion 4L is provided with a plurality of (for example, four) through holes 8 at intervals in the circumferential direction.
- the first ring-shaped member 52 functions as a first protrusion that prevents excessive deformation of the elastic seal portion 6L on one side of the annular base portion 4L.
- the second ring-shaped member 54 functions as a second protrusion that prevents excessive deformation of the elastic seal portion 6L on the other surface side of the annular base portion 4L.
- the elastic seal portion 6L is provided so as to cover the entire first ring-shaped member 52, second ring-shaped member 54, and annular base portion 4L.
- a pair of first annular seal protrusions 56 are provided on one surface (upper surface in FIG. 21) of the elastic seal portion 6L at a radial interval, and on the other surface (lower surface in FIG. 21) in the radial direction.
- a pair of second annular seal protrusions 58 are provided at intervals.
- first annular seal projection 56 and the second annular seal projection 58 By providing the first annular seal projection 56 and the second annular seal projection 58, the first annular seal projection 56 and the second annular seal projection in the connected connection state of the first member 16 and the second member 20.
- 58 denotes an end surface of the first annular flange portion 18 of the first member 16 (see FIG. 10 (gasket seat 60)) or an end surface of the second annular flange portion 22 of the second member 20 (see FIG. 10 (gasket seat 62)).
- a large pressure is generated in the first annular seal protrusion 56 and the second annular seal protrusion 58. Therefore, the first annular seal protrusion 56 and the end surface of the first annular flange portion 18 of the first member 16 (see FIG.
- the seal body 2L is manufactured as follows. First, the first ring-shaped member 52 (first protrusion) is fixed to a predetermined position on one surface of the annular base 4L by a fixing means such as an adhesive or welding, and the adhesive or welding is fixed to a predetermined position on the other surface.
- the second ring-shaped member 54 (second protrusion) is fixed by means. Then, this annular base 4L (with the first ring-shaped member 52 and the second ring-shaped member 54 fixed) is set in a fixed mold (not shown), and a movable mold (see FIG. (Not shown) is moved and clamped, for example, synthetic rubber is poured into the molding space, and an elastic seal portion 6L as shown in the figure is integrally formed on the inner peripheral portion of the annular base portion 4L by such vulcanization molding. .
- the sealing body 2L is waterproofed and insulated by covering the first ring-shaped member 52, the second ring-shaped member 54, and the annular base portion 4L with the elastic seal portion 6L. Therefore, it can prevent that the cyclic
- the seal member 2L is provided with the flange 140, so that, for example, the pipe member 110 and the connection pipe member 104, the connection pipe member 106 and the pipe member 114, and the pipe member 110 shown in FIG.
- the flange 140 is used.
- the coupling bolt 28 and the through hole 8 can be finely adjusted, so that the mountability of the seal body 2L is improved.
- the annular base portion 4M of the seal body is composed of a single ring-shaped metal plate, and the metal plate is bent to form the protrusion 150.
- the entire annular base 4M is covered with synthetic rubber.
- the thirteenth seal body 2M includes an annular base portion 4M and an elastic seal portion 6M provided so as to cover the entire annular base portion 4M, and the annular base portion 4M has a circumferential direction.
- a plurality of (four in this embodiment) through-holes 8 are provided at intervals.
- a plurality of protrusions 150 are provided at intervals in the circumferential direction.
- Such an annular base 4M can be manufactured as follows, for example. That is, four through holes 8 are formed at intervals in the circumferential direction of the annular base portion 4M.
- the annular base 4M is punched in a U-shape toward the radially inner side and the radially outer side, centering on the portion where the protrusions 150 are formed at intervals in the circumferential direction on the radially inner side of the through hole 8 and is formed in a tongue shape.
- a piece (projection 150 before bending) is formed.
- the tongue-like piece is formed in a substantially trapezoidal shape in which the width W1 of the tip end portion is smaller than the width W2 of the base end portion.
- the punching can be easily performed by punching the tongue-like piece into a substantially trapezoidal shape with a narrow tip.
- Each tongue-like piece is plastically deformed radially outward by pressing so that the direction of plastic deformation is reversed, and the tongue-like piece formed radially outward Is formed in the protrusion 150 by plastically deforming inward in the radial direction.
- the communication holes 152 are provided on the radially inner side and the radially outer side of the projecting portion 150. Therefore, when the elastic seal portion 6M is vulcanized, A part of the synthetic rubber flows into the communication hole 152 and becomes integral with the annular base 4M, whereby the annular base 4M and the elastic seal portion 6M can be more firmly integrated.
- the sealing member 2M is provided with the collar 140, so that, for example, the pipe member 110 and the connecting pipe member 104, the connecting pipe member 106 and the pipe member 114, and the pipe member 110 shown in FIG.
- the flange 140 is used.
- the coupling bolt 28 and the through hole 8 can be finely adjusted, so that the mountability of the seal body 2M is improved.
- the annular base portion when the annular base portion is punched into a U-shape, as shown in FIG. 25 (b), a punching process is performed by punching so that the width of the tip of the tongue-shaped piece is narrowed. Easy to do.
- the shape of the tongue-like piece is substantially trapezoidal.
- the elastic seal portion when a burr or the like is generated by drilling or punching the annular base portion, the elastic seal portion may be damaged. Therefore, it is preferable to perform a process such as chamfering to remove the burr or the like.
- the present invention relates to the connection between fluid pipes such as water pipes, gas pipes, plant pipes or the like, or connection between the fluid pipes and devices connected thereto (for example, air valves, fire hydrants, repair valves, etc.)
- the present invention can be used for a flange coupling structure applied to the connection between devices and a seal body used therefor.
- Second member 28 Coupling bolt 32 Nut 48, 92 Communication hole 52 First ring-shaped member (first 1 protrusion) 54 Second ring-shaped member (second protrusion) 60, 62 Gasket seat 70, 71 Washer member 74, 76 Concave step portion 77 Short sleeve member 86 First metal plate 88 Second metal plate 92 Projection 92A First projection 92B Second projection 99 Metal plate
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- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Abstract
Description
前記シール体は、金属製プレートから形成された環状基部と、前記環状基部に一体的に設けられた弾性シール部とを有し、前記貫通孔は、前記環状基部に周方向に間隔をおいて複数設けられ、また前記弾性シール部は、前記環状基部を覆うように設けられ、前記シール体の前記弾性シール部が前記第1部材の前記第1環状フランジ部と前記第2部材の前記第2環状フランジ部の間をシールすることを特徴とする。
金属製プレートから形成された環状基部と、前記環状基部に一体的に設けられた弾性シール部とを有し、前記環状基部には、ボルトが挿通される貫通孔が周方向に間隔をおいて複数設けられ、前記弾性シール部は、前記環状基部を覆うように設けられ、前記弾性シール部が前記第1部材の前記第1環状フランジ部と前記第2部材の前記第2環状フランジ部の間をシールすることを特徴とする。
同様に、環状の第2金属製プレート132に周方向に間隔をおいて4個の貫通孔8を形成する。貫通孔8の径方向内側に舌状片(折曲前の第2突部136)と連通孔90を周方向に沿って交互に形成する。
このように、シール体2Kを製作する際に、第1金属製プレート130及び第2金属製プレート132とを、予め仮止めする必要がないため、製作コストの削減を図ることができる。
なお、第1環状シール突部及び第2環状シール突部が設けられるシール体(例えば、図8、図9、図14、及び、図16に示す実施形態)においても、同様の効果が生じる。
また、環状基部4Lを構成する材料としてステンレスを用いることで、万一、弾性シール部6Lが損傷したとしても、錆等を生じる恐れがなく、耐久性の向上につながる。
4,4A,4B,4C,4D,4E,4F,4G,4H,4J,4K,4L,4M 環状基部
6,6B,6C,6G,6H,6K,6L,6M 弾性シール部
8 貫通孔
16 第1部材
20 第2部材
28 結合用ボルト
32 ナット
48,92 連通孔
52 第1リング状部材(第1突部)
54 第2リング状部材(第2突部)
60,62 ガスケット座
70,71 ワッシャ部材
74,76 凹状段部
77 短スリーブ部材
86 第1金属製プレート
88 第2金属製プレート
92 突部
92A 第1突部
92B 第2突部
99 金属製プレート
Claims (7)
- 第1環状フランジ部を有する第1部材と、第2環状フランジ部を有する第2部材と、前記第1部材の前記第1環状フランジ部と前記第2部材の前記第2環状フランジ部との間に介在されるシール体と、を備え、前記第1環状フランジ部、前記第2環状フランジ部及び前記シール体の貫通孔を挿通してボルトを装着し、前記ボルトの雄ねじ部にナットを螺着して前記第1環状フランジ部及び前記第2環状フランジ部を結合するフランジ結合構造において、
前記シール体は、金属製プレートから形成された環状基部と、前記環状基部に一体的に設けられた弾性シール部とを有し、前記貫通孔は、前記環状基部に周方向に間隔をおいて複数設けられ、また前記弾性シール部は、前記環状基部を覆うように設けられ、前記シール体の前記弾性シール部が前記第1部材の前記第1環状フランジ部と前記第2部材の前記第2環状フランジ部の間をシールすることを特徴とするフランジ結合構造。 - 前記シール体の前記弾性シール部は、前記環状基部の内周部の片面から内周面を通って他面まで覆うように一体的に設けられていることを特徴とする請求項1に記載のフランジ結合構造。
- 前記シール体の前記環状基部の片面側には、前記第1部材の前記第1環状フランジ部に当接する第1突部が設けられ、その他面側には、前記第2部材の前記第2環状フランジ部に当接する第2突部が設けられていることを特徴とする請求項1又は2に記載のフランジ結合構造。
- 前記シール体の前記第1突部は、前記環状基部の片面側に周方向に間隔をおいて複数設けられ、また前記シール体の前記第2突部は、前記環状基部の他面側に周方向に間隔をおいて複数設けられていることを特徴とする請求項3に記載のフランジ結合構造。
- 前記環状基部は、第1及び第2金属製プレートから形成され、前記環状基部の前記第1突部は、前記第1金属製プレートの周方向の複数部位を折曲することにより形成され、また前記環状突部の前記第2突部は、前記第2金属製プレートの周方向の複数部位を折曲することにより形成され、前記第1金属製プレートと前記第2金属製プレートとは、前記第1突部が前記シール体の片面側に、また前記第2突部が前記シール体の他面側となるように重ね合わされて前記環状基部を構成することを特徴とする請求項4に記載のフランジ結合構造。
- 前記シール体の前記環状基部の内周部には、表面を粗くするための粗面加工及び/又は貫通するための穴加工が施されていることを特徴とする請求項1~5のいずれかに記載のフランジ結合構造。
- 第1部材の第1環状フランジ部と第2部材の第2環状フランジ部との間に介在されるシール体において、
金属製プレートから形成された環状基部と、前記環状基部に一体的に設けられた弾性シール部とを有し、前記環状基部には、ボルトが挿通される貫通孔が周方向に間隔をおいて複数設けられ、前記弾性シール部は、前記環状基部を覆うように設けられ、前記弾性シール部が前記第1部材の前記第1環状フランジ部と前記第2部材の前記第2環状フランジ部の間をシールすることを特徴とするシール体。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020157036622A KR101867145B1 (ko) | 2013-05-31 | 2014-04-11 | 플랜지 결합 구조 및 이에 사용되는 시일체 |
EP14804751.7A EP3006802B1 (en) | 2013-05-31 | 2014-04-11 | Flange joining structure and seal body used therein |
CN201480030850.4A CN105247263B (zh) | 2013-05-31 | 2014-04-11 | 法兰连接结构以及用于该结构的密封体 |
JP2015519736A JP6046812B2 (ja) | 2013-05-31 | 2014-04-11 | フランジ結合構造及びこれに用いるシール体 |
US14/893,715 US10145498B2 (en) | 2013-05-31 | 2014-04-11 | Flange joining structure and seal body used therein |
HK16103377.9A HK1215466A1 (zh) | 2013-05-31 | 2016-03-23 | 法蘭連接結構以及用於該結構的密封體 |
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JP2013-115055 | 2013-05-31 |
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EP (1) | EP3006802B1 (ja) |
JP (2) | JP6046812B2 (ja) |
KR (1) | KR101867145B1 (ja) |
CN (1) | CN105247263B (ja) |
HK (1) | HK1215466A1 (ja) |
MY (1) | MY175498A (ja) |
WO (1) | WO2014192442A1 (ja) |
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US10907735B2 (en) | 2016-03-18 | 2021-02-02 | Shimizu Alloy Mfg. Co., Ltd. | Gasket and flange connection structure for plumbing instrument using the same |
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Also Published As
Publication number | Publication date |
---|---|
EP3006802A1 (en) | 2016-04-13 |
HK1215466A1 (zh) | 2016-08-26 |
CN105247263B (zh) | 2017-09-19 |
US10145498B2 (en) | 2018-12-04 |
JP6405559B2 (ja) | 2018-10-17 |
JP6046812B2 (ja) | 2016-12-21 |
US20160102793A1 (en) | 2016-04-14 |
EP3006802B1 (en) | 2018-05-16 |
JP2017044346A (ja) | 2017-03-02 |
CN105247263A (zh) | 2016-01-13 |
KR101867145B1 (ko) | 2018-06-12 |
EP3006802A4 (en) | 2017-02-08 |
JPWO2014192442A1 (ja) | 2017-02-23 |
MY175498A (en) | 2020-06-30 |
KR20160014006A (ko) | 2016-02-05 |
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