CN111712663A - 管连接 - Google Patents

管连接 Download PDF

Info

Publication number
CN111712663A
CN111712663A CN201880089318.8A CN201880089318A CN111712663A CN 111712663 A CN111712663 A CN 111712663A CN 201880089318 A CN201880089318 A CN 201880089318A CN 111712663 A CN111712663 A CN 111712663A
Authority
CN
China
Prior art keywords
thread
pipe
diameter
pipe connection
connection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201880089318.8A
Other languages
English (en)
Other versions
CN111712663B (zh
Inventor
J·阿尔滕拉特
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Danfoss AS
Original Assignee
Eaton Intelligent Power Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eaton Intelligent Power Ltd filed Critical Eaton Intelligent Power Ltd
Publication of CN111712663A publication Critical patent/CN111712663A/zh
Application granted granted Critical
Publication of CN111712663B publication Critical patent/CN111712663B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/06—Screw-threaded joints; Forms of screw-threads for such joints characterised by the shape of the screw-thread
    • 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
    • F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
    • F16L13/14—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling
    • F16L13/16—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars
    • F16L13/168—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints made by plastically deforming the material of the pipe, e.g. by flanging, rolling the pipe joint consisting of overlapping extremities having mutually co-operating collars for screw threaded pipes
    • 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
    • F16L15/00—Screw-threaded joints; Forms of screw-threads for such joints
    • F16L15/001—Screw-threaded joints; Forms of screw-threads for such joints with conical threads
    • 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
    • F16L33/00—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses
    • F16L33/24—Arrangements for connecting hoses to rigid members; Rigid hose connectors, i.e. single members engaging both hoses with parts screwed directly on or into the hose
    • 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
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/16—Screw-threaded joints

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints That Cut Off Fluids, And Hose Joints (AREA)
  • Joints With Pressure Members (AREA)

Abstract

本发明涉及管连接，例如用于连接到管的软管接头，该管连接包括具有通孔的主体，所述通孔具有中心轴线、第一端、第二端、靠近第一端并与中心轴线同轴布置的内螺纹，其中内螺纹具有恒定的中径，其中，螺纹的最大直径沿轴向从第一端向第二端增加并且其中螺纹的最小直径沿轴向从第一端向第二端减小。

Description

管连接
技术领域
本发明涉及管连接，例如用于连接到管的软管接头，该管连接包括具有通孔的主体，所述通孔具有中心轴线、第一端、第二端、靠近第一端并与中心轴线同轴布置的内螺纹，其中内螺纹具有恒定的中径。
背景技术
从GB 810628已知这种管连接。该出版物公开了一种具有通孔和内螺纹的主体，从而提供了螺母状的环。主体布置在管上，并通过布置在管壁中的脊来保持在管上。在管的末端，布置了软管。然后，将螺母状的环旋转到软管上，以使螺纹切入软管并将软管固定至管。
缺点是管端需要变形以提供脊，这需要特殊的设备，该设备并不总是可用的，特别是在用户要更换管部件的维修过程中。
US 4488738公开了一种管连接，其中，主体设有通孔，在该通孔中布置有锥形螺纹，使得中径减小。螺纹深度实际上从零开始并增加，这样，当通过旋转将管插入通孔时，螺纹被切入管中。
特定螺纹(内螺纹或外螺纹)的中径是与螺纹轴向同心的圆柱表面的直径，其在等距点与螺纹侧面相交，当在包含螺纹轴线的横截面中观察时，这些点之间的距离恰好是螺距的一半。
由于螺纹的锥形形状，该连接不太适合承受轴向力和径向力。由于通孔和螺纹的锥形形状，这种力将管从管连接中推出。轴向力的最大部分将由螺纹的最后一圈承担，一旦最后一圈失败，该连接就会松动。
还已知通过钎焊将管连接至例如接头。钎焊允许牢固的连接，通常适用于高压应用。但是，钎焊费时、费力、昂贵并且容易出错。此外，长管不能钎焊，因为它们不适合典型的钎焊炉。结果，钎焊过程通常不适合短期订购或维修损坏的连接。
因此，本发明的目的是减少或甚至消除上述缺点。
发明内容
根据本发明，该目的根据前序部分的管连接得以实现，其特征在于，该螺纹的最大直径沿轴向从第一端向第二端增大，并且其中该螺纹的最小直径沿轴向从第一端向第二端减小。
由于管连接的螺纹具有恒定的中径，当最大直径增大并且最小直径减小时，通过旋转插入到管接头中的管会有一端向外张开。这是由于该螺纹的最小直径引起的，当在通孔中向内旋转时，其会使管的材料变形。变形的材料会被推入由增大的螺纹的最大直径所提供的空间中。
管端的最终形状将向外张开，而通孔中的内螺纹形状为圆锥形，从第一端向内向第二端变宽。结果，在管连接和管之间设有了形状限定的连接，其不仅仅如US4488738中那样依赖于螺纹的单个转动。
本发明的另一个优点是，无需任何专用工具即可进行该管连接。只要能够产生足够的扭矩以将直管端旋转到管连接中，就可以实现可靠的连接。
为了确保密封连接，可以在管端和管连接之间设有特殊的胶水，或者可以在管端区域内设置软密封或热塑性密封。
在根据本发明的管连接的优选实施例中，螺纹在距第一端一定距离的地方开始，使得在第一端与该螺纹之间的通孔中设置有圆柱形表面。
该圆柱形表面为管端提供支撑，从而有助于管端的插入，但也可以承受施加在管端上的弯曲应力。在圆柱形表面上，弯曲应力被施加在远离设有螺纹的管端部分的管端部分上，使得设有螺纹的部分实际上仅受到轴向力。
优选地，该圆柱形表面的直径等于中径。这允许从该圆柱形表面向螺纹部分的平滑过渡。
在根据本发明的管连接的另一优选实施例中，最大直径和最小直径在螺纹的开始处相等。
这确保了该螺纹从螺纹深度为零开始，并且直径与中径相对应的管端可以插入到管连接中。然后通过旋转该管端并将其进一步插入通孔中，通过管连接的内螺纹提供所需的管端的扩口形状。
在根据本发明的管连接的又一优选实施例中，最小直径以1°-5°的角度减小。
1°–5°的角度允许将管端拧入管连接中，而无需额外的轴向力，也无需额外的专用工具。
在根据本发明的管连接的又一优选实施例中，主体包括六棱柱形状，其中六棱柱的轴线与中心轴线同轴。
对于六棱柱形状，可以使用典型的活动扳手或机用扳手将本发明的管连接与管端连接。
附图说明
将结合附图对本发明的这些特征和其他特征进行说明。
图1示出了根据本发明的管连接的实施例和管端的分解图。
图2示出了处于组装状态的图1的实施例。
具体实施方式
图1示出了具有带有通孔3的主体2的管连接1。通孔3的第一端设有圆柱形部分4，随后是内螺纹5。
在第二端，主体2在外表面6上设有软管连接。此外，在主体2上设有六棱柱形状7，以允许活动扳手或机用扳手的啮合。
螺纹5具有恒定的中径Dp，而最小直径Dmin从圆柱形部分4向主体的第二端减小并且最大直径Dmax从圆柱形部分4向第二端增大。
最小直径Dmin以角度α减小，其最好在1°和5°之间，从而当将管端8拧入管连接1时不需要额外的轴向力。
最大直径Dmax增加量与最小直径Dmin减小量相同。这确保了中径Dp是恒定的，而且还确保了被最小直径Dmin变形的材料的量可以由于增大的最大直径Dmax而被推向膨胀空间。
插入到管连接1中并在图1中以分解图示出的管端8具有标准直径Dnorm。由于螺纹5的形状，管端8的端部张开至扩大的直径Dexp，这提供了管端8与管连接1的形状限定的连接。
图2示出了管端8和管连接1处于组装状态。标准直径Dnorm对应于螺纹的中径Dp。管端8的端部张开至扩大的直径Dexp，其与螺纹5的该位置处的最大直径Dmax几乎相等。

Claims (6)

1.管连接(1)，例如用于连接到管(8)的软管接头，该管连接(1)包括具有通孔(3)的主体(2)，所述通孔具有中心轴线、第一端、第二端、靠近所述第一端并与所述中心轴线同轴布置的内螺纹(5)，其中所述内螺纹(5)具有恒定的中径(Dp)，
其特征在于
所述螺纹(5)的最大直径(Dmax)在轴向上从所述第一端向所述第二端增大，并且其中所述螺纹(5)的最小直径(Dmin)在轴向上从所述第一端向所述第二端减小。
2.根据权利要求1所述的管连接(1)，其中所述螺纹(5)在距所述第一端一定距离处开始，使得在所述第一端与所述螺纹(5)之间的所述通孔(3)中设有圆柱形表面(4)。
3.根据权利要求2所述的管连接(1)，其中所述圆柱形表面(4)的直径等于所述中径(Dp)。
4.根据前述权利要求中任一项所述的管连接(1)，其中在所述螺纹(5)的起点处，所述最大直径(Dmax)和最小直径(Dmin)相等。
5.根据前述权利要求中任一项所述的管连接(1)，其中所述最小直径(Dmin)以1°-5°的角度(α)减小。
6.根据前述权利要求中任一项所述的管连接(1)，其中所述主体(2)包括六棱柱形状(7)，其中，所述六棱柱(7)的轴线与所述中心轴线同轴。
CN201880089318.8A 2017-12-18 2018-12-10 管连接 Active CN111712663B (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB1721113.7 2017-12-18
GB1721113.7A GB2569380A (en) 2017-12-18 2017-12-18 Tube connection
PCT/EP2018/084121 WO2019121091A1 (en) 2017-12-18 2018-12-10 Tube connection

Publications (2)

Publication Number Publication Date
CN111712663A true CN111712663A (zh) 2020-09-25
CN111712663B CN111712663B (zh) 2022-04-15

Family

ID=61009051

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201880089318.8A Active CN111712663B (zh) 2017-12-18 2018-12-10 管连接

Country Status (6)

Country Link
US (1) US11353146B2 (zh)
EP (1) EP3728922B1 (zh)
CN (1) CN111712663B (zh)
DK (1) DK3728922T3 (zh)
GB (1) GB2569380A (zh)
WO (1) WO2019121091A1 (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2580818A (en) * 1948-05-01 1952-01-01 Charles A Bashford Connector for conduits
GB1133125A (en) * 1966-04-12 1968-11-06 Erik Nilsson A coupling for joining pipes and pipelike parts of synthetic plastic material and thelike
CN1375034A (zh) * 1999-08-10 2002-10-16 亨廷油田服务公司 螺纹管接头
CN107407447A (zh) * 2015-02-19 2017-11-28 安赛乐米塔尔管材产品卢森堡股份公司 用于诸如石油管道和气体管道之类管道的螺纹连接件
CN107407317A (zh) * 2015-03-27 2017-11-28 麦斯莱德有限公司 防错误旋拧紧固件系统

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US635636A (en) * 1899-02-01 1899-10-24 Charles A Bailey Pipe-coupling.
US2094491A (en) * 1934-07-20 1937-09-28 Janata Rudolph Screw thread joint
US2245419A (en) * 1938-06-22 1941-06-10 Herman A Unke Threaded thin-walled article
US2267923A (en) * 1940-09-16 1941-12-30 Arthur E Johnson Shear-reducing, dual verge thread for tool joints, etc.
US2371971A (en) * 1943-04-26 1945-03-20 Michigan Patents Corp Hose connector
US2540113A (en) * 1944-02-18 1951-02-06 Parker Appliance Co Two-piece hose coupling
US2476480A (en) * 1945-11-30 1949-07-19 Aeroquip Corp Hose and tube fitting
FR58553E (fr) * 1947-09-04 1954-01-27 Cie De Pont A Mousson Joint vissé pour tuyaux
US2768009A (en) * 1953-01-23 1956-10-23 Parker Appliance Co Coupling with recess for end of flexible pipe
US2816781A (en) * 1953-10-12 1957-12-17 George V Woodling Deep thread re-usable hose coupling
US4121862A (en) * 1977-04-06 1978-10-24 Exxon Production Research Company Pipe connection
US4488738A (en) 1981-05-12 1984-12-18 Valdes Osvaldo J Synthetic plastic pipe coupling and method of assembly
US4583767A (en) * 1984-08-10 1986-04-22 Hansen Albert F Pipe coupling
US5582439A (en) * 1995-06-07 1996-12-10 Spears Manufacturing Company Strengthened pipe fitting and method
US7017951B2 (en) * 2002-09-13 2006-03-28 Spears Manufacturing Co. Strengthened pipe fitting having encapsulated reenforcing collar

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2580818A (en) * 1948-05-01 1952-01-01 Charles A Bashford Connector for conduits
GB1133125A (en) * 1966-04-12 1968-11-06 Erik Nilsson A coupling for joining pipes and pipelike parts of synthetic plastic material and thelike
CN1375034A (zh) * 1999-08-10 2002-10-16 亨廷油田服务公司 螺纹管接头
CN107407447A (zh) * 2015-02-19 2017-11-28 安赛乐米塔尔管材产品卢森堡股份公司 用于诸如石油管道和气体管道之类管道的螺纹连接件
CN107407317A (zh) * 2015-03-27 2017-11-28 麦斯莱德有限公司 防错误旋拧紧固件系统

Also Published As

Publication number Publication date
WO2019121091A1 (en) 2019-06-27
DK3728922T3 (da) 2022-05-23
GB201721113D0 (en) 2018-01-31
GB2569380A (en) 2019-06-19
EP3728922B1 (en) 2022-03-30
US11353146B2 (en) 2022-06-07
CN111712663B (zh) 2022-04-15
US20200309291A1 (en) 2020-10-01
EP3728922A1 (en) 2020-10-28

Similar Documents

Publication Publication Date Title
US6036237A (en) Coupling for corrugated tubing
US5403043A (en) Quick connect pipe coupling
US4458926A (en) Hydraulic hose adapter with O-ring seal
US4887853A (en) Method and apparatus for providing a unitary assembly of tubing and a terminating fitting
JPH0811990B2 (ja) 空気圧装置のための雄ねじ及び雌ねじ
JP6833709B2 (ja) スエージ継手
AU2011315323B2 (en) Corrugated tube connector
EP0528079A1 (en) Connector for smooth pipe ends and method of connection
JP4058409B2 (ja) 管継手において使用するための支持スリーブ及び前記スリーブと共に使用するための継手ハウジング
JP2004513316A (ja) ピッチの異なる２個のネジを有する締付け用ナットを備え、所要の締付け力を低減する管継手
CN105339715B (zh) 管道连接件
AU2016266599B2 (en) Threaded coupling end for a percussion drill string component
AU2010207305B2 (en) Bite-in type pipe connection structure, valve, bite-in type pipe joint, and refrigeration device
CN111712663B (zh) 管连接
US2951715A (en) Tube coupling connection for plastic or soft metal tubing
US2490686A (en) Coupling for flexible metal hose
US3630548A (en) Hose-fitting system
TWI755473B (zh) 用於醫療管路系統之配件
US4610466A (en) Convertible flare/braze fitting
USRE31123E (en) Pipe section and coupling
EP3680536A1 (en) Insert and joint for flexible pipes and method for fixing a joint to a flexible pipe
US20220412492A1 (en) Coupler for Connecting Flexible Hoses
CN211925099U (zh) 一种不锈钢管的外连接组件
US11898668B1 (en) Joint assembly for a hose assembly
CN211344311U (zh) 防脱快速接头

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
TR01 Transfer of patent right

Effective date of registration: 20220601

Address after: Denmark nordburg

Patentee after: Danfoss power system II Technology Co.,Ltd.

Address before: Irish Dublin

Patentee before: Eaton Intelligent Power Co.,Ltd.

TR01 Transfer of patent right
TR01 Transfer of patent right

Effective date of registration: 20231108

Address after: Denmark nordburg

Patentee after: DANFOSS A/S

Address before: Denmark nordburg

Patentee before: Danfoss power system II Technology Co.,Ltd.

TR01 Transfer of patent right