• 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:

    公开号:SE1050769A1
    申请号:SE1050769
    申请日:2010-07-09
    公开日:2012-01-10
    发明作者:Thomas Andersson；Lars Selling
    申请人:Kungsoers Plast Ab；
    IPC主号:
    专利说明:

    15 20 25 become an fl ash neck, and in view of robustness. Thus, improvements are needed to overcome these disadvantages.
    Summary A first object of the present invention is to provide a pipe connection which does not function as an ash neck in a pipe system.
    A second object is to provide a more robust pipe connection, in particular in a pipe system which comprises plastic pipes.
    A third object is to arrange a pipe connection which is easy to mount in a pipe system, on site.
    Thus a pipe connection is provided which comprises: - a tubular part having a first piece with a first outer diameter and a second piece with a second outer diameter which is larger than the first outer diameter, the second piece having a circumferentially circumferential groove, - a detachable stop ring, which when arranged in the groove, is radially projecting from the tubular part, and - an end part having a central through opening for receiving the tubular part, the flange part having a shoulder which is to abut against the stop ring when the end part is arranged around the stop ring.
    By arranging a pipe connection having a second outer diameter which is larger than the first outer diameter of the tubular part, the groove in the pipe connection will not weaken the pipe connection at the groove.
    The tubular part is made of metal. The pipe connection can thus be made in one piece, which simplifies the manufacture of the pipe connection. In addition, a robust metal interface is provided for a pipe system, which ensures that the plastic pipe system with which the pipe connection is to be connected does not have its weakest part at the pipe connection.
    An embodiment may further comprise a tubular plastic part, the first piece of the tubular part being adapted to receive the tubular plastic part. The tubular plastic part can advantageously be welded together with a plastic pipe using, for example, a welding base. In this way, the pipe connection can function as an interface for connecting e.g. two plastic pipes. The second piece may have an outer diameter which is larger than an outer diameter of the tubular plastic part.
    As a result, the groove in the outer peripheral surface of metal will not affect the overall robustness of the pipe connection or the pipe system to which it is to be connected. The second piece in particular has a thickness which is not adversely affected by the groove.
    The respective outer diameters resp. the first paragraph and the second paragraph for the tubular part may be smaller than the diameter of the continuous opening of the end part. Thereby, the end part and the stop ring can be arranged around the tubular part from each side of the tubular part. This can be advantageous when mounting or dismounting the pipe connection in a pipe system.
    The outer diameter of the tubular member, at the groove, may be at least as large as the outer diameter of the tubular plastic member. The groove will thus not reduce the thickness of the tubular part. Thereby a robust pipe connection can be arranged which does not weaken the pipe system with which it is connected. The inner diameter of the tubular member may be constant. As a result, the capacity of the pipe system to which the pipe connection is to be connected will not be reduced at the pipe connection. The device presented in the "Background" section, on the other hand, has a non-constant inner diameter, as it contains a bead projecting radially inwardly at the groove to compensate for the thinning of the tube provided by the groove. The protrusion reduces the capacity of a pipe system.
    The stop ring may have a slit. Thereby, the stop ring can be bent out to enable assembly and disassembly of the stop ring into resp. out of the groove, by causing the stop ring to slide axially along the outer surface of the tubular member. By removing the stop ring, the end part can be arranged around the tubular part from both ends of the pipe. This construction can simplify assembly and disassembly of the pipe connection when it is arranged in a pipe system. For example, if the pipe connection has been welded to a plastic pipe via the tubular plastic part and repair work requires | oscope | can be removed at the end face of the second paragraph, instead of the first paragraph.
    The flange part may have a first flange surface extending laterally radially between the through-opening and the outer periphery of the flange part, the first end surface being aligned with an end surface of the second part when the shoulder is fitted with the stop ring. Thereby, a maximum fastening pressure can be applied to fl faces facing each other, when the pipe connection is used in a pipe system.
    The pipe connection will thus provide access to a more robust and leak-free connection.
    An embodiment may further comprise a removable inner pipe coupling part having an outer diameter which is smaller than the inner diameter of the tubular part, the inner pipe coupling part being projecting from the first piece when arranged in the tubular part. The inner pipe coupling part can provide access to a smooth transition between the pipe connection and the part of the pipe system to which it is to be connected.
    The inner pipe coupling part may comprise a conductive material. Thereby a smooth transition is arranged between electrical gradients of a plastic line to which the pipe connection is to be connected and the inner surface of the pipe connection of metal.
    An embodiment may further comprise a fixture for fixing a piece of the tubular plastic part around the first piece for the tubular part. As a result, the tubular plastic part can also be attached to the first piece, which improves the durability of the coupling.
    The fixture may be cylindrical and may be arranged to receive the tubular plastic member.
    The first paragraph may comprise a number of projections around the periphery. Thereby, the tubular plastic part can be fixed more effectively to the tubular part. Further elaborated features and advantages of the present invention will become apparent from the following description.
    Brief Description of the Drawings The invention and further advantages thereof will now be described using non-limiting examples with reference to the accompanying drawings, in which: Figure 1 shows an exploded view of a first example of a pipe connection according to the present invention.
    Figure 2 shows a cross-sectional view of an arrangement in which the pipe connection in figure 1 is mounted in a pipe system.
    Figure 3 shows an exploded view of a second example of a pipe connection according to the present invention.
    Figure 4 shows an exploded view of a third example of a pipe connection according to the present invention.
    Detailed Description In the following description, the purpose of which is to explain and not to limit, specific details are set forth, such as particular techniques and applications for conveying thorough knowledge of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced according to other embodiments which depart from these specific details. In other cases, detailed description of well-known methods and apparatus has been omitted so as not to obscure the description of the present invention with unnecessary details.
    Referring to Figure 1, a first example of a pipe connection 1 according to the present invention is shown. The pipe connection 1 comprises a tubular part 2, a tubular plastic part 9-1, a stop ring 5 and an end part 7, hereinafter referred to as annular end part 10. The tubular part 2 has a first piece 2-1, which has a first outer diameter d4, and a second paragraph 2-2, having a diameter d2. which is larger than the first outer diameter d4.
    A plastic material has been applied to the first piece 2-1, the plastic material delimiting the tubular piece 9-1 for the pipe connection 1.
    The second piece 2-2 for the tubular part 2 has one end opposite to the tubular plastic part 9-1 for the pipe connection 1.
    The tubular plastic part 9-1 has an outer peripheral surface of plastic for the pipe connection 1. The second piece 2-2 for the tubular part 2 has an outer peripheral surface of metal for the pipe connection 2. The pipe connection 1 has a first end surface 10-1 at the tubular plastic part 9-1. The pipe connection 1 has a second end surface 10-2 at the second piece 2-2. The length of the pipe connection 1 is defined by a distance d between the first end surface 10-1 and the second end surface 10-2.
    The second piece 2-2 is provided with a circumferentially circumferential groove 11. The circumferentially circumferential groove 11 extends around the outer peripheral surface of metal.
    The pipe connection 1 has an inner diameter d1 which is constant. The second piece 2-2 has an outer diameter d2 which is larger than the outer diameter d3 of the tubular plastic part 9-1. At the groove 11, the tubular part 2 has a diameter which is at least as large as the diameter d2 of the tubular plastic part 9-1. Thereby, a pipe thickness of the pipe connection 1 can be at least as thick as the total thickness of the tubular plastic part 9-1 together with the thickness of the first piece 2-1 of the tubular part 2 along the length of the pipe connection 2.
    By arranging the non-reduced thickness in the pipe connection 1 also at the groove 11, the robustness of the pipe connection 1 will not decrease. Thus, the pipe connection 1, i.e. the connection that can connect e.g. one pipe to another pipe does not become the weakest link in a pipe system. The stop ring 5 has a slot 6. The slot 6 allows the stop ring 5 to be bent out to expand. The stop ring 5 can also be reshaped into its annular shape after being bent out. Thereby, the stop ring 5 can be arranged in a removable manner in the groove 11 by causing it to slide axially along the tubular arrangement 3. When the stop ring 5 is arranged in the groove 11, the stop ring 5 is radially projecting relative to the outer peripheral surface of the second piece 2- 2.
    The annular end part 7 can be mounted around the tubular part 2. The central through-opening for the annular flange part 7 has a first and a second diameter which are both larger than the outer diameter d2 of the tubular part 2. A surface with a radial extent at the interface between the the first and second diameters define a surface of a shoulder 13 abutting the stop ring 5 when the stop ring 5 is concentrically arranged with the end portion 7. In the present example, the shoulder 13 extends circumferentially along the periphery of the central through opening.
    When the stop ring 5 is arranged in the groove 11 and the annular end part 7 is inserted from the right in figure 1, around the tubular part 2 and the stop ring 5, the shoulder 13 abuts against the stop ring 5.
    The annular end part 7 has a first and a second flange surface 7-1 resp. 7-2. The first and second fl end surfaces 7-1 resp. 7-2 extend radially from a through opening for the annular flange portion 7 to the outer periphery of the annular flange portion 7. The first and second end surfaces 7-1 and 7, respectively. 7-2 is located on opposite sides of the annular end part 7.
    When the stop ring 5 is arranged in the groove 11 and fitted with the shoulder 13, the first surface 7-1 for the flange part 7 is substantially aligned with the second end surface 10-2 for the pipe connection 1.
    Figure 2 shows the pipe connection in figure 1 in a pipe system 15. The pipe system 15 comprises the pipe connection 1, a plastic pipe 17, a welding base 19, a coupling 21, and a packing arrangement 23. The packing arrangement 23 is arranged between the second end surface 10-2 of the pipe connection 2 and a surface 25 for the connection 21, which is opposite the second end surface 10-2. In the typical case, the end part 7 and the end coupling 21 each have a number of corresponding axial through holes through which bolts or similar fastening devices can be arranged. Using the bolts, the end part 7 and the connecting part 21 can be fastened to each other.
    By arranging the gasket arrangement 23 between the pipe connection and the connection 23, the connection between the pipe connection 1 and the flange coupling 21 can be properly sealed.
    The flange coupling 21 in the illustrated example has threads and can be attached to e.g. a container, e.g. a fuel tank, not shown here for the sake of clarity.
    The first end surface 10-1 for the pipe connection 1 is aligned with an end surface 25 for the plastic pipe 17. The plastic pipe 17 and the tubular plastic part 9-1 for the pipe connection 1 are welded together via the welding base 19.
    To achieve a smooth conductive transition between an inner conductive surface of the plastic pipe 17 and the inner metal surface of the pipe connection 1, a tubular inner coupling part 29 can be arranged in the through opening of the pipe connection 1 in the first paragraph 2-1 of the pipe connection 1. The inner the pipe coupling part 29 projects from the first end surface 10-1 when arranged in the tubular part 2. The inner pipe coupling part 29 is thus fitted in the tubular part 2. The projecting part can be fitted in the plastic pipe 17, thereby providing an interface between the pipe connection 1 and the plastic tube 17.
    The inner pipe coupling part 29 may comprise a conductive or semi-conductive plastic material. Such a plastic material may be, for example, polyoxymethylene (POM) or polyamide. The inner pipe coupling part 29 acts as an interface at the connection between the plastic pipe 17 and the pipe connection 1.
    A conductive inner surface in pipes in a pipe system enables the diversion of electrical charge on the inner surface, which charge is obtained by friction which arises due to the flow of e.g. a liquid through the pipe system 15. Thereby sparks in the pipe system 15 can be prevented. This can be particularly advantageous, for example if the liquid transported in the pipe system 15 is a liquid with low conductivity, e.g. petrol.
    An example of another application of the pipe connection is to function as a connection to connect one pipe to another pipe. More specifically, the pipe connection can be used to connect one plastic pipe to another plastic pipe. In such an arrangement, the coupling typically comprises two pipe connections facing each other. The corresponding end pieces are then attached using e.g. bolts or similar fasteners. Normally a packing arrangement is arranged between the end parts to seal the pipe system.
    The tubular part 2 is typically manufactured as an integral metal component. The end part 9-1 of plastic is arranged on the first piece 2-1 for the tubular part 2 by applying a plastic material to the outer peripheral surface of the first piece 2-1.
    Since the groove is arranged in the second end piece which is made of metal, the stop ring is prevented from creeping into the groove when the end part is arranged around the tubular part and attached to an opposite end of a pipe system.
    Referring to Figure 4, a second example of a pipe connection 1 'according to the present invention is shown. The pipe connection 1 'comprises a tubular part 2 ", the stop ring 5, a fixture 14 and the annular flange part 7. The stop ring 5 and the annular end part 7 will not be described further, as they are similar to those described in the first example.
    The tubular metal part 2 'has a first piece 2-2 with a first outer diameter and a second piece 2'-2' with a second outer diameter which is larger than the first outer diameter. The second outer diameter is substantially the same size as an inner diameter of a tubular plastic part 9'-1, e.g. a pipe to which the pipe connection 1 'is to be connected.
    The first piece 2 '-2' has a plurality of axially distributed radial projections 16 extending circumferentially, and a stop ring 5 'in a groove. The first piece 2'-2 'is thereby adapted to receive a part of the tubular plastic part 9'-1. To achieve this, the tubular plastic part 9'-1 can be passed over the first piece 2'-2 ', where the projections 16 and the stop ring 5' will fix the plastic end part 9'-1 to the tubular part 2 '.
    In order to further attach the tubular plastic part 9'-1 to the tubular part 2 ', the fixture 14, which is cylindrical, can be arranged around the tubular plastic part 9'-1.
    The fixture 14 is pressed around the tubular plastic part 9'-1 when the tubular plastic part 9'-1 is arranged around the first piece 2'-2 of the tubular part 2 ', whereby the fixture 14 is reshaped around the tubular plastic part 9'-1 and fixes the tubular plastic part 9'-1 between the first piece 2'-2 "'and the fixture 14.
    Fig. 5 shows a first example of a pipe connection 1 "according to the present invention.
    The pipe connection 1 "comprises the tubular part 2 ', the stop ring 5, the annular flange part 7 and a fixture 14".
    The third example is generally similar to the second example, except that the third example includes a different 14 "fixture. The fixture 14 'is cylindrical and can be arranged around the tubular plastic part 9'-1. When the fixture 14 'is arranged around the tubular plastic part 9'-1, the fixture can be clamped around the tubular plastic part 9'-1 using a fastening device 14'-1 as exemplified here by a nut and a bolt. In this way, the tubular plastic part 9'-1 can be fixed between the tubular part 2 'and the fixture 14'.
    In the examples described, the tubular part 2, 2 'is typically made of a metal, e.g. steel.
    It is obvious that the present invention can be varied in a number of ways. Such variations should not be construed as departing from the scope of the present invention as defined by the appended claims. Those skilled in the art will appreciate in what other types of applications the present method may be used. For example, according to a variation of the invention, the inner diameter of the tubular member in the second piece may increase in proportion to the outer diameter of the tubular member on the second end piece. As a result, the thickness of the 11 tubular part is maintained even at the groove. Furthermore, the shoulder must not extend along the entire inner periphery of the end part. Instead, a number of approaches can be distributed along the inner periphery of the end part. In addition, the end part can have any suitable design. The flange part may, for example, have an outer periphery which has a rectangularly shaped end part.
    权利要求:
    Claims (16)
    [1]
    Pipe connection (1; 1 '; 1 ") comprising: - a tubular part (2; 2') having a first piece (2-1) with a first outer diameter and second piece (2-2) with a second outer diameter , which is larger than the first outer diameter, which second piece has a circumferentially circumferential groove (11) - a removable stop ring (5), which, when arranged in the groove (11) is radially projecting from the pipe part (2; 2 '), and - an end part (7) having a central through-opening for receiving the pipe part (2; 2'), the flange part (7) having a shoulder (13) abutting the stop ring (5) when the end part (7) 7) is arranged around the stop ring (5).
    [2]
    Pipe connection (1; 1 '; 1 ") according to claim 1, wherein the tubular part is of metal.
    [3]
    Pipe connection (1) according to claim 1 or 2, comprising a tubular plastic part (9-1), wherein the first piece (2-1) of the tubular part is adapted to receive the tubular plastic part.
    [4]
    Pipe connection (1) according to claim 2, wherein the tubular plastic part (9-1) has a length which is shorter than the length of the first piece (2-1) of the tubular part (2).
    [5]
    Pipe connection (1) according to claim 3 or 4, wherein the second piece (2-2) has an outer diameter d2 which is larger than the outer diameter d3 of the tubular plastic part (9-1).
    [6]
    Pipe connection (1) according to one of the preceding claims, wherein each of the outer diameters d4 and d2 of the first piece (2-1) resp. the second section (2-2) for the tubular part (2; 2 ') is smaller than the diameter of the through-opening in the end part (7). 10 15 20 25 30 13
    [7]
    Pipe connection (1) according to any one of claims 3-6, wherein the outer diameter d2 of the tubular part (2) at the groove (11) is at least equal to the outer diameter d3 of the tubular plastic part (9-1).
    [8]
    Pipe connection (1; 1 '; 1 ") according to any one of the preceding claims, wherein the tubular part (2; 2') has a larger axial circumference than the flange part (7).
    [9]
    Pipe connection (1; 1 '; 1 ") according to any one of the preceding claims, wherein the inner diameter d1 of the tubular part (2) is constant.
    [10]
    Pipe connection (1; 1 '; 1 ”) according to one of the preceding claims, wherein the stop ring (5) has a slot (6).
    [11]
    Pipe connection (1; 1 '; 1 ”) according to any one of the preceding claims, wherein the flange part (7) has a radially projecting first end surface (7-1) extending between the through-opening and the outer periphery of the flange part (7). , the first fl end surface (7-1) being aligned with an end surface (10-2) of the tubular part (2; 2 ') when the shoulder (13) is fitted with the stop ring (5).
    [12]
    Pipe connection (1) according to any one of claims 3-10, further comprising a removable inner pipe coupling part (29) having an outer diameter which is smaller than the inner diameter of the tubular part (2), the inner pipe coupling part (29) projecting from the tubular plastic part (9-1; 9'-1) when arranged in the tubular part (2).
    [13]
    Pipe connection (1) according to claim 12, wherein the inner pipe coupling part (29) comprises a conductive material.
    [14]
    A pipe connection (1 '; 1 ") according to claim 1, further comprising a fixture (14; 14') for fixing a piece of the tubular plastic part (9'-1) around the first piece (2-1) for the tubular part (2 ').
    [15]
    A pipe connection (1 '; 1 ") according to claim 14, wherein the fixture (14; 14') is cylindrical and is arranged to receive the tubular plastic part (9'-1). 14
    [16]
    Pipe connection (1 '; 1 ") according to any one of the preceding claims, wherein the first piece (2-1) comprises a number of projections around the periphery.
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    同族专利:
    公开号 | 公开日
    SE535387C2|2012-07-17|
    EP2591262A1|2013-05-15|
    US20130207387A1|2013-08-15|
    WO2012005679A1|2012-01-12|
    US9261210B2|2016-02-16|
    CN102985739A|2013-03-20|
    CN102985739B|2014-12-10|
    EP2591262B1|2019-08-28|
    EP2591262A4|2017-06-07|
    引用文献:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1050769A|SE535387C2|2010-07-09|2010-07-09|Pipe|SE1050769A| SE535387C2|2010-07-09|2010-07-09|Pipe|
    US13/808,916| US9261210B2|2010-07-09|2011-07-07|Pipe connector|
    EP11803908.0A| EP2591262B1|2010-07-09|2011-07-07|Pipe connector|
    CN201180033844.0A| CN102985739B|2010-07-09|2011-07-07|Pipe connector|
    PCT/SE2011/050924| WO2012005679A1|2010-07-09|2011-07-07|Pipe connector|
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