• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    An inwardly open sleeve (27) which is C-shaped in axial cross-section is enclosed in a housing (11) which can be braced around the pipe ends (36, 37) to be connected. The legs, directed towards one another, of said sleeve are designed as sealing lips (32, 33) and the web (28) of said sleeve is supported against the inner side of the housing, while the sealing lips (32, 33) are supported on the web (28). In order to ensure that, when bracing the housing, the sealing lips (32, 33) are pressed onto the outer surfaces of the pipe ends (36, 37) to be connected, with sufficient radially inwardly directed force, and remain pressed against said surfaces, even when alternating thermal stressing takes place over a long period of time, the sealing lips (32, 33) are each supported on the web (28) by means of a helical spring ring (40, 41). <IMAGE>
    公开号:SU961568A3
    申请号:SU772506701
    申请日:1977-07-21
    公开日:1982-09-23
    发明作者:Штрауб Иммануэль
    申请人:Straub Immanuel；
    IPC主号:
    专利说明:

    The invention relates to valve engineering, in particular to a device for connecting pipes.
    A device for connecting pipes containing an open chamber is known, - 5 in which there is a C-shaped in axial section cuff of rubber-like material, which is a jumper connecting the sealing lips directed to one another [1]. before
    However, the known device does not provide the necessary density of the pipe joint, which would not be dependent on thermal stresses or on the aging of the cuff material. fifteen
    The aim of the invention is to ensure the density of the pipe joint, regardless of variable thermal loads and aging of the cuff material. 20
    This goal is achieved in that the inner diameter of the sealing lips is larger than the diameter of the ends of the pipes to be connected, and a prestressed coil spring is installed between the outer surface of the sealing lips and the inner surface of the jumper 25.
    In FIG. 1 shows a device for connecting pipes, a General view; in FIG. 2 is a section AA in FIG. 1 (with connected pipes).
    A device for connecting pipes contains an open chamber 1, the casing 2 of which has a mainly cylindrical shape and on the end sides of which flanges 3 and 4 are bent inward.
    The chamber 1 is made of one piece of high strength sheet metal, for example stainless steel. Bent outward in opposite directions, the plates 5 and 6 cover, respectively! · One cylindrical coupling pin 7 or 8, which are interconnected by a certain number of bolts, in this case, two internal hexagon bolts 9 and 1O. The free ends of the plates 5 and 6 It is advisable to weld to the lateral cylindrical surface of the casing 2 of the chamber. In this case, the heads 11 and 12 of the internal hexagon bolts 9 or 10 pass through the holes 13 and 14 in the plate 5. The part of the bolts 9 and 10 adjacent to the heads 11 and 12 with a slight play passes through the transverse holes 5 in the coupling pin 7, through unimaged holes in the place of the bend of the plate 5, and then also with a gap through the holes 15 and 16 in the place of the bend of the plate 6 and enter the transverse holes provided with 10 internal threads in the coupling pin 8. From this it follows that when tightening the bolts 9 and 10, the chamber 1 can be tightened like a haze a lot of bridge or coupling. fifteen
    The chamber 1 between the flanges 3 and 4 contains a C-shaped in cross section opening inwardly made of synthetic rubber cuff 17, the jumper 18 of which, with its 20 outer side under the gasket of steel tape 19, fits snugly against the cylindrical inner surface 20 of the camera housing 2. A strip of steel tape 19, among other things, serves to 25 open the gap 21 at the bend of the plates 5 and 6 (Fig. 1).
    The ends 18 in the form of sealing lips, 22 and 23 are adjacent to the jumper 18 of the sealing sleeve 17 on both sides. The sealing lips have sharp sealing lips 24 and 25 at the free ends, which, when the camera 1 is tightened, fit tightly against the side surface of the * 'ATC pipes 26 and 27. 3
    On the reverse side to the bridge 18 of the sealing jaws 22 and 23 are outwardly facing annular groove 28 and 29, which are taken in prac- 40 tically ring closed in itself of a helical spring 30 or 31. This slightly straightening ring at its outer periphery supports, preferably thin-walled section 32 and 33 of the bridge, 45 km and, in turn, relies on it. Between the annular grooves 28 and 29 and the base 34 and 35 of the sealing lips there is an annular hollow space 36 and 37, which is connected through the turns 50 of the ring of the coil spring 30 and 31 between the inner side of the bridge 18 and the outer side of the ends of the pipes 26 and 27 with the space 38.
    Rings helical spring 30 .and 31 You are a 55 suppl mainly four functions. Firstly, due to the fact that they externally lean on the inner side of zone 32 or 33 of the jumper 18, when tightening the housing, they provide immediate pressing to the outer surface of the ends of the pipes 26 and 27 of the sealing lips and 23 with a radially directed force that exceeds their own elasticity. Secondly, due to the ability to freely straighten, they provide a uniform distribution of internal pressure in the pipes, which is transmitted through the pipe junction to the space 38, all along the dine facing the bridge 18 of the sides of the sealing lip 22 or 23, including hollow spaces 36 and 37, so that the sealing sponges around the entire outer perimeter experience hydrostatic inward force. Thirdly, especially with insufficient elasticity of the material of the sealing collar, due to wear and tear and repeated and prolonged thermal load, the sealing lips 22 are constantly pressed tightly or along the entire outer perimeter of the ends of the connected pipes 26 and 27 even with a slight internal pressure in the pipes. At the same time, the rings of the coil spring 30 and 31 prevent the thin-walled sections 32 and 33 of the cuff 18 of the cuff from moving away from the gasket 19, and such a departure can occur as a result of the almost inevitable aging of the rubber material under high thermal loads and the disappearance of internal pressure in the connected pipes.
    Taking into account the latter phenomenon, the inner side located between the sealing lips 22 and 23 of the jumper section 18 is profiled. On this segment, the partition does not have a constant thickness, and at a certain distance in the axial direction there are rounded inward thickenings 39, which give the inner side a wavy profile . This profile (Fig. 1) is indicated by a dashed line 40. The reinforcements 39 serve as stiffeners with a radially outward force that prevents the jumper 18 from moving away from the gasket 19 if the cuff material is compacted under the influence of thermal loads.
    The device operates as follows.
    Sealing lips before mounting the connection have a larger diameter than the pipe to be sealed. With the voltage of the chamber’s sealing sleeve covering the jumper, this chamber compresses ”·
    961568 6 to a smaller diameter, and due to this, the sealing collar is compressed in volume. This means that the rubber sleeve also has a smaller diameter. Due to the compression of the chamber to a smaller diameter of 5 meters, the sealing collar is compressed in volume, so that the diameters of the jumper of the screw spring ring and sealing __ lip are reduced. Due to this reduction in diameter, the sealing lip 10 then adheres to the outer surface of the pipe and, due to further tensioning of the chamber, the cuff jumper through the screw spring ring, as well as the sealing lip, are subjected to even greater pressure, the rubber material of the sealing lip penetrates the pores, risks , seams or other non-flatness of the untreated outer surface of the pipe.
    The end faces of the sealing man-20 of the jet 17 are divided into two, mainly conical planes 41 and 42 or 43 and 44. The radially outer conical surfaces 41 and 43 are adjacent to the inwardly curved side edges 45 and 46 of the laying 19, and its ends must be one from another at a distance equal to the distance between the places of bending of the plates 5 and 6, and these ends of the strip 19 should be located in a place 30 diametrically opposite the gap 21.
    The inner conical planes 42 and 44 of the front side of the cuff 17 tightly fit, respectively, to the truncated cone-shaped clamping rings — Js 47 and 48. These clamping rings are made of high-strength steel and consist of a tape conically bent in the form of a coil with overlapping ends. At the point of the largest diameter, the clamping rings 47 and 48 are axially mounted in the housing, in the recesses 49 and 50 between the housing casing 2 and the flange 4 or 3. On the segment of the smaller diameter, the clamping rings are equipped with a large number of -Ο θ _ 45 different cutouts forming the plates 51, protruding from the cone-shaped surface of the clamping ring so that they cover one another like scales. The free end of each such plate 51 thus forms a grip 52, intended for cutting into the side surface of the ends of the pipes to be joined and securing to this surface.
    If the chamber above the ends of the pipes 26 and 27 (Fig. 2) is tightened, then the grips 52 at the 5S ends of the plates 51 of the clamping rings 47 and 48 will immediately cut into the outer surface of the ends of the pipes. This will happen because the clamping rings 47 and 48 at the points of their largest diameter, i.e., in the hollows 50 or 49, are tightened by a cage covering them along the outer and inner perimeters. This cage on the one hand consists of a massive outer spacer ring 53. The spacer ring 53 has a cylindrical outer surface 54 that fits snugly against the inner side 20 of the camera housing 2 at the location of the recesses 49 and 50; the first conical plane 55 is tight. adjacent to the lateral edge 45 or 46 and, thus, to the conical surface 41 and 43 of the front side of the cuff 17, and the second conical surface 56, tightly adjacent to the outer side surface of the clamping rings 47 and 48. The ends of the spacer ring 53 are located one from another the distance equal to the distance between the inflection points of the plates 5 and 6, so that when tightening the chamber 1 they form a tight connection, and the spacer ring 53 takes the form of a closed ring.
    On the other hand, the clip of the plate clamping ring has the following, in contact with its inner side surface, a spacer ring 57, having, in accordance with that shown in FIG. 1-2 form of execution, round cross section. This spacer ring 57 rests on the inside of the flange 3 or 4. The ends of the spacer ring 57 (with the camera 1 not tightened) are at a distance from one another, approximately equal to the distance between the ends of the spacer ring 53, and come into close contact.
    Thanks to the spacer rings 53 and 57, the clips of the clamping rings 48 and 47, despite the elasticity of the material of the cuff 17, when tightening the chamber 1, the grippers 52 and the outer surface of the ends of the connected pipes 26 and 27 are immediately supplied and engaged with this surface even if there is no hydrostatic in the cavity 38 pressure, which would be transmitted through an incompressible cuff 17 and would cause a similar phenomenon.
    The technical and economic efficiency of the connecting device consists in providing not only a tight, but also equivalent geometric closure in the axial direction, as well as in the direction of twisting of the pipe ends connection immediately after tightening the chamber. This connection has an almost unlimited lifetime7, even if the operating temperatures are approaching the maximum allowable.
    权利要求:
    Claims (1)
    [1]
    internal hex bolts 9 or 1 pass through holes 13 and 14 in plate 5. Adjacent to heads 11 and 12, part of bolts 9 and 1 O with a small play extends through the transverse ones in the extension finger 7, through the unexposed holes at the bend of plastic-5 5 and then, with a gap through the holes 11 15 and 16 in the place of the bend of the plate 6 and enter into the transverse holes provided with an internal thread in the fastening pin 8. From this it follows that when tightening the bolts 9 and 1 O, the chamber 1 can be tightened like clamping bridge or coupling. The chamber 1 between the flanges 3 and 4 contains a C-shaped cross-section opening inwards made of synthetic rubber sealing sleeve 17, the jumper 18 of which with its outer side under the strip of steel tape 19 fits snugly to the cylindrical inner surface 20 of the casing 2 of the chamber. A strip of steel tape 19, among other things, serves to overlap the gap 21 at the point of bending of the plates 5 and 6 (Fig. 1). The lintel 18 of the sealing cuff 17 on both sides is adjacent to the ends, made in the form of sealing lips 22 and 23. At the free ends, the sealing lips are sharp sealing edges 24 and 25, which, when the camera 1 is tightened, fit snugly to the side surface of the the device of the ends of the pipes 26 and 27. On the side of the sealing jaws 22 to 23 facing the lintel 18, there are outwardly facing annular grooves 28 and 29 in which the hopper spring ZO or 31 is almost closed in itself. This is a slightly straightened ring its outer perimeter is supported, preferably, by a thin-walled section of 3.2 and 33 lintels and, in turn, rests on it. Between the annular grooves 28 and 29 and the base 34 and 35 of the sealing jaws there is an annular hollow space 36 and 37, which through coils of the coil spring 30 and 31 between the inner side of the web 18 and the outer side of the ends of the pipes 26 and 27 is connected to the space 38. The coil spring rings 30. And 31 mainly perform four functions. First, due to the fact that they are outside on the inside of ZONE 32 or. 33, lintels 18, when tightening the casing, they provide immediate pressing to the outer surface of the ends of the pipes 26 and 27 of the sealing jaws 22 and 23 with a radially directed force that surpasses its own elasticity. Secondly, due to the property of free distribution, the TSEs ensure uniform distribution of the internal pressure in the pipes, which through the junction of the pipes is transmitted to the space 38, along the entire length of the sealing jaws 22 or 23 facing the bridge 18, including the hollow spaces 36 and 37, whereby, sealing lips across the entire outer perimeter experience a hydrostatic inward force. Thirdly, especially with insufficient elasticity of the material of the sealing cuff, due to wear or repeated and prolonged thermal stress, constant sealing of the sealing lips 22 or 23 is ensured along the entire outer perimeter of the ends of the connected pipes 26 and 27 even with a slight internal pressure in the pipes . At the same time, the helical spring rings ZO and 31 prevent thin-walled sections 32 and 33 of the lintel 18 of the cuff from the gasket 19, and such a departure may occur as a result of the almost inevitable aging of the rubber material under conditions of high 5-thermal loads and the disappearance of the internal pressure in the connected pipes. Taking into account the latter, the inner side is profiled between the sealing jaws 22 and 23 from cutting jumper 18. In this section, the partition does not have a constant thickness, and at a certain distance in the axial direction there are rounded inward thickening 39, which give an internal side wavy profile. This profile (Fig. 1) is marked by a dashed line 40. The thickenings 39 serve as stiffening ribs with radially outward force that prevent the web 18 from moving away from the gasket 19 if the cuff material is compacted by thermal loads. The device works as follows. The sealing lips before mounting the joint have a larger diameter than the pipe to be sealed. With a tension of the chamber enclosing the jumper, the camera cuffs off to a smaller diameter, and due to this, the sealing cuff is compressed in volume. This means that the rubber cuff also has a smaller diameter. By compressing the chamber to a smaller diameter, the sealing cuff is compressed in volume, so that the diameters of the jumper of the screw spring ring and the sealing lip are reduced. Due to this reduction in diameter, the sealing sponge then abuts the outer surface of the pipe and, due to further tension of the chamber, the cuff lintel through the screw spring ring, as well as the sealing lip, undergoes even greater pressure, and the rubber material of the sealing sponge penetrates into the pores, rice ki , seams or other non-flatness of the untreated outer surface of the pipe. The front sides of the sealing sleeve 17 are divided into two, mainly conic planes 41 and 42 or 43 and 44. Radially external conical The surfaces 41 and 43 lie adjacent to the inward-curved side edges 45 and 46 of the gasket 19, and its ends should be one from another at a distance equal to the distance between the bend points of the plates 5 and 6, and these ends of the gasket 19 should be located in a place diametrically opposite to the gap 21, the inner conical planes 42 and 44 of the end side of the cuff 17 are tightly attached, respectively, to the truncated cone-shaped clamping rings 47 and 48. These clamping rings are made of high-strength steel bent in the form of a spiral with overlapping ends. At the point of the largest diameter, the clamping posts 47 and 48 are axially fixed in the housing in the recesses 49 and 5O between the casing of the housing 2 and the flange 4 or 3. On a segment of smaller diameter, the clamping rings are equipped with a large number of different cuts, forming plates 51 protruding from the cone-shaped surfaces of the clamping ring in such a way that they cover one another like scales. The free end of each such plate 51 thus forms a grip 52, intended to be inserted into the side surface of the ends of the pipes to be joined and secured to this surface. If the chamber is pushed over the ends of the pipes 26 and 27 (Fig. 2), the clamps 52 at the ends of the plates 51 of the clamping rings 47 and 48 will immediately be embedded into the outer surface of the ends of the pipes. This will happen because the clamping rings 47 and 48 at the points of their largest diameter, i.e., in the depressions 5O or 49, are tightened by a yoke covering them along the outer and inner perimeters. This cage on the one hand consists of an outer massive spacer ring 53. The spacer ring 53 has a cylindrical outer surface 54 which fits snugly to the inner side 2O of the casing 2 of the chamber at the location of the recesses 49 and 50; the first conical plane 55, tightly adjacent to the side edge 45 or 46 and, thus, to the conical surface 41 and 43 of the front side of the cuff 17, and the second conical surface 56 tightly adjacent to the outer side surface of the clamping rings 47 and 48. The ends of the spacer the rings 53 are located one from another at a distance equal to the maximum between the inflection points of the plates 5 and 6, so that when the chamber 1 is tightened, they form a tight connection, and the distance ring 53 takes the form of a closed ring. On the other hand, the ferrule of the plate clamping ring has the following, in contact with its inner side surface, the spacer ring 57, having, in accordance with that shown in FIG. 1-2, round cross section. This spacer ring 57 rests on the inner side of the flange 3 or 4. The ends of the spacer ring 57 (with the chamber 1 not stretched) are spaced from each other, approximately equal to the distance between the ends of the spacer ring 53, and come into tight contact. Due to the spacer rings 53 and 57 of the clip of the clamping rings 48 and 47, despite the elasticity of the material of the cuff 17, when the chamber 1 is tightened, the grippers 52 and the outer surface of the ends of the connecting tubes 26 and 27 are immediately fed and hooked to this surface even in the absence of in the hydrostatic cavity 38, the pressure that would be transmitted through the incompressible cuff 17 and would cause a similar 5T. The technique-economic efficiency of the connecting device consists in providing not only a tight, but also equivalent geometric closure in the axial direction, as well as in the direction of twisting the connection of the pipe ends immediately after tightening the chamber. This connection has a virtually unlimited service life, even if the operating temperatures approach the maximum allowable. Formula of the invention. A device for connecting pipes containing an open chamber, c. which has a C-shaped cross-section cuff made of a rubber-type material, which is a jumper connecting the sponge sealing each other, which is different to 8 8 so that, in order to ensure the density of the pipe joints, regardless of the variable thermal loads and material aging cuffs, the inner diameter of the sealing jaws are larger than the diameter of the ends of the pipes to be joined, and between the outer surface of the sealing jaws and the inner surface of the lintel there is a pre-installed Gennes coil spring. Sources of information taken into account during the examination 1. US Patent No. 3680874, cl. 277-153, 1972.
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    引用文献:
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    DE367004C|1919-04-04|1923-01-15|Ernest Tribe|Pipe connection|
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    US2227551A|1939-06-07|1941-01-07|Jolly L Morris|Pipe coupling and pipe clamp|
    US2395745A|1942-11-16|1946-02-26|James T King|Joint and clamp construction|
    FR1221348A|1958-06-25|1960-06-01|Aeroquip Corp|Tube or pipe fitting|
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    US3877733A|1973-06-14|1975-04-15|Immanuel Straub|Pipe coupling|
    FR2220736B3|1973-03-07|1976-03-05|Courtade Edmond Fr|
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    US9168585B2|2012-11-02|2015-10-27|Mueller International, Llc|Coupling with extending parting line|
    US10578234B2|2013-05-02|2020-03-03|Victaulic Company|Coupling having arcuate stiffness ribs|
    ES2889723T3|2013-07-17|2022-01-12|Victaulic Co Of America|Couplings having arcuate rigid ribs|
    SG11201803931WA|2015-12-28|2018-06-28|Victaulic Co Of America|Adapter coupling|
    US10605394B2|2016-05-16|2020-03-31|Victaulic Company|Fitting having tabbed retainer and observation apertures|
    US10533688B2|2016-05-16|2020-01-14|Victaulic Company|Coupling having tabbed retainer|
    US10859190B2|2016-05-16|2020-12-08|Victaulic Company|Sprung coupling|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    AT537576A|AT348838B|1976-07-21|1976-07-21|PIPE COUPLING|
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