WO2016029759A1 - 一种唇密封焊接式管件接口及其安装工艺 - Google Patents

一种唇密封焊接式管件接口及其安装工艺 Download PDF

Info

Publication number
WO2016029759A1
WO2016029759A1 PCT/CN2015/084827 CN2015084827W WO2016029759A1 WO 2016029759 A1 WO2016029759 A1 WO 2016029759A1 CN 2015084827 W CN2015084827 W CN 2015084827W WO 2016029759 A1 WO2016029759 A1 WO 2016029759A1
Authority
WO
WIPO (PCT)
Prior art keywords
pipe
ring
socket
welding
lip
Prior art date
Application number
PCT/CN2015/084827
Other languages
English (en)
French (fr)
Inventor
陈征
Original Assignee
深圳市雅昌管业股份有限公司
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 深圳市雅昌管业股份有限公司 filed Critical 深圳市雅昌管业股份有限公司
Publication of WO2016029759A1 publication Critical patent/WO2016029759A1/zh

Links

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
    • F16L21/00—Joints with sleeve or socket
    • F16L21/02—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings
    • F16L21/03—Joints with sleeve or socket with elastic sealing rings between pipe and sleeve or between pipe and socket, e.g. with rolling or other prefabricated profiled rings placed in the socket before connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
    • C09J183/04—Polysiloxanes
    • 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
    • F16L13/02—Welded joints
    • F16L13/0209—Male-female welded joints
    • 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
    • F16L17/00—Joints with packing adapted to sealing by fluid pressure
    • F16L17/02—Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket
    • F16L17/03—Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket having annular axial lips
    • F16L17/035—Joints with packing adapted to sealing by fluid pressure with sealing rings arranged between outer surface of pipe and inner surface of sleeve or socket having annular axial lips the sealing rings having two lips parallel to each other
    • 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
    • F16L13/141—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 by crimping or rolling from the outside
    • F16L13/142—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 by crimping or rolling from the outside with a sealing element inserted into the female part before crimping or rolling

Definitions

  • the invention relates to the field of pipe installation, in particular to a lip seal welded pipe joint interface and a mounting process thereof.
  • the connection method of the thin-walled metal pipe and the pipe joint welding method has been very difficult for a long time, such as the thin-walled stainless steel pipe of the pipe system for various pressure media such as water pipes and oil and gas pipes, the diameter and wall of the pipe.
  • the thickness of the pipe with a thickness less than ⁇ 50mm is 0.2-1.0mm; the wall thickness of the pipe smaller than ⁇ 100mm is 1.0-1.5mm; the wall thickness of the pipe smaller than ⁇ 200mm is 1.5-2.0mm; the wall thickness of the pipe of diameter ⁇ 1000mm is 3.0-
  • the welding of thin-walled tubes such as 4.0mm often causes misalignment on the interface, which seriously affects the quality problem.
  • the fire color of the welded joint can not be solved by the protective gas, the welding fire color can not be eliminated in the crack, and the fire color problem can not be solved, causing the fire color corrosion and Corrosion of the gap causes irregular piercing of the welded joints, corrosion of the uninterrupted welds, and serious engineering hazards, which have not been recognized by technical organizations for a long time.
  • the reason is that the welded pipe mouth should solve three core functional problems. First, the welded joint reaches the seal; second, the welded joint is welded firmly, and the joint can not be broken and broken at the welded joint, and no hidden defects such as corrosion and corrosion are left. The third is to make the interface size uniform and not misplaced, which affects the local thickness and causes the strength problem.
  • the core of its welding technology is a firm seal that must be completed by the same process.
  • the object of the present invention is to provide a new technical process method.
  • the present invention provides a lip seal welded pipe joint and a mounting process thereof, and provides a new interface and a technical interface for solving the structural problems and technical defects existing in the existing pipe seal welding installation.
  • a lip seal welded pipe joint comprising a pipe member with a socket, a pipe inserted into the pipe socket, and an inner ring groove wall of the outer ring of the pipe socket and an outer wall of the pipe insertion socket portion a sealing ring with a main ring, a ring lip and an attached lip, the pipe socket having a welded structure at its port portion welded and fixed to the pipe, the ring lip of the sealing ring being a cone and forming an axial direction of the pipe 0-89 degrees, the ring lip of the sealing ring is attached to the outer wall of the pipe and maintains a sealing stretch ratio of 10% to 30%.
  • the outer side wall of the main ring of the sealing ring or the lip on the main ring and the inner ring of the pipe are outwardly convex.
  • the ring groove wall fits and remains sealed and compressed.
  • the ring lip of the sealing ring is biased toward the side of the sealed medium during the installation process, and the thickness of the lip of the ring lip is consistent with the size of the gap between the tube and the socket of the tube.
  • the sealing elastic stretch ratio of the lip lip of the sealing ring is greater than or equal to 10% and less than or equal to 30%, and the minimum tearing strength of the sealing ring is 20KN/M, and is broken.
  • the tensile rate is 300% to 500%, the tensile strength is at least 9 MPa, the hardness (1RHD) is 50 to 80 degrees, the tolerance is ⁇ 4, the embrittlement temperature is -55 °C, and the compression set in air is 125 °C.
  • the 22h maximum 220 100 °C hot water immersion 7d volume change 0 ⁇ 8 times, the geometrical dimensions of the ring lip and the tube and pipe socket gap value are equal, the error is within ⁇ 5%.
  • the sealing ring is an elastic sealing ring, and the sealing ring is made of a silica gel material, and the silicone rubber material is selected from a chemical molecular chain sealing agent and a silicone rubber produced by an additive process technology.
  • the outer ring outer diameter of the sealing ring is larger than the inner ring groove diameter of the outer ring of the pipe socket by more than 5%, and the main ring of the sealing ring has a smaller wire diameter than the tubular bearing ring.
  • the radius of the inner ring groove is less than 1% to 5% of the difference between the circumferential average radius of the outer wall of the inserted pipe.
  • the outer diameter of the main ring of the sealing ring is larger than the outer diameter of the inner ring groove of the socket ring by more than 5%, and the sealing ring of the pipe inserted into the pipe socket is sealed by a radial line.
  • the ratio is more than 10%.
  • a lip seal welded pipe joint installation process includes the following installation steps:
  • the welding process requirements and processes include the following steps:
  • the welding method adopts intermittent welding to maintain a certain cooling amount and cooling time during welding, so that the welding heat does not affect the performance and function of the sealing ring.
  • solder joints do not allow excessive soldering or weld perforation, sand holes and other defects.
  • the welding process is a multi-stage welding
  • the welding port is a multi-stage welding port.
  • the welding process is all-welding, and the welded joint is a full welded joint.
  • the lubricating agent of the main lip of the sealing ring is made of sanitary water or talcum powder, and the pipe mouth of the pipe is cut by a pipe rolling cutter or the pipe is cut straight, and the pipe mouth eliminates the gross profit.
  • the outer edge of the nozzle is smooth chamfered to eliminate sharp edges.
  • the welding pull-out force between the pipe and the pipe member should be more than twice the thrust of the pipe medium section.
  • the invention has the beneficial effects that the present invention provides a lip seal welded pipe joint and a method for installing the same, and the pipe structure is installed on the structure and the installation process, and the process structure and method of the welded joint are changed.
  • the structural stability and sealing performance of the welded pipe fitting structure are improved, leakage, pipeline explosion and the like are increased.
  • the lip seal welded pipe joint and the installation process thereof solve the technical defects existing in the existing pipe fitting installation, such as poor welding, easy sealing problem, difficult operation, and greatly reduce labor intensity and welding engineering quantity, and inspection Workload, improve project quality, reduce construction volume, and shorten project construction time.
  • Figure 1 is a schematic cross-sectional view showing the structure of a sealing ring in the present invention
  • Figure 2 is another embodiment of the sealing ring of the present invention.
  • Figure 3 is a third embodiment of the sealing ring of the present invention.
  • Figure 4 is a fourth embodiment of the sealing ring of the present invention.
  • Figure 5 is a schematic view showing the structure of the pipe joint before welding in the present invention.
  • Figure 6 is a schematic structural view of the pipe joint after welding according to the present invention.
  • Figure 7 is a schematic view showing the structure of the welded joint of the pipe joint in the present invention.
  • Figure 8 is a structural schematic view showing the welding of the pipe joint of the present invention in multiple stages
  • Figure 9 is a schematic view showing the structure of the welded joint of the pipe joint in the present invention.
  • Figure 10 is a schematic view showing the fit of the inner ring groove of the pipe joint and the outer diameter of the pipe in the present invention.
  • a lip seal welded pipe joint includes a pipe member 1 with a socket 11, a pipe 2 inserted into the socket 11 of the pipe member 1, and a convex ring at the socket 11 of the pipe member 1.
  • the inner ring groove 13 wall of the 12 and the tube 2 are inserted between the outer side walls of the socket 11 and the sealing ring 3 with the main ring 31, the ring lip 32 and the lip 33 provided at the mouth thereof.
  • the welded structure 4 is welded and fixed to the tube 2, the ring lip 32 of the sealing ring 3 is a cone cone and is 0-89 degrees with the axial direction of the tube 2, and the ring lip 32 of the sealing ring 3 is attached to the outer wall of the tube 2 and Maintaining a seal stretch ratio of 10% to 30%, the main ring 31 or the lip 32 of the outer side wall of the main ring 31 of the seal ring 3 is in contact with the wall of the inner ring groove 13 of the outer ring 12 of the pipe member 1 and is kept sealed and compressed.
  • the seal ring 3 includes a main ring 31, a ring lip 32 extending from the main ring 31 toward the center thereof, and an attachment lip 33 disposed outside the main ring 31.
  • the ring lip 32 is provided with a lip 34.
  • the main ring 31 of the sealing ring 3 is located in the inner ring groove 13 of the socket 11, the ring lip 32 of the sealing ring 3 is sleeved on the tube 2, and the lip 34 of the sealing ring 3 is attached to the tube 2
  • the outer wall of the sealing ring 3 is attached to the wall portion of the annular groove 13 in the socket 11.
  • the important function of the lip 33 is to fundamentally eliminate the possibility of low pressure leakage, strengthen the problem of partial sealing and ultra low pressure sealing, and also adjust the free compression ratio, improve the partial sealing, and rise again under high pressure conditions. It is an important strong sealing structure measure to the secondary sealing self-sealing effect.
  • the lip 33 structure following the main lip 31 is an indispensable guarantee for the sealing surface of the tube.
  • the main ring 31 is provided with a plurality of lip 33 and a plurality of channels.
  • the lip 33 forms a multi-layered mysterious palace structure, which is very effective in improving the sealing performance of the sealed cavity. This design is unprecedented in the pipeline engineering, and the integral reinforced seal of the double-ring double-ring lip of the pipe fitting is unprecedented.
  • the ring lip 32 of the seal ring 3 is biased toward the side of the sealed medium during installation, and the thickness of the lip 34 of the ring lip 32 is the same as the gap size between the tube 2 and the socket 11 of the tube member 1.
  • the sealing elastic stretch ratio of the lip 34 of the sealing ring 3 is greater than or equal to 10% and less than or equal to 30%, and the minimum tearing strength of the sealing ring is 20KN/M, and the tensile elongation is 300. % ⁇ 500%, the tensile strength is at least 9MPa, the hardness (1RHD) is 50-80 degrees, the allowable deviation is ⁇ 4, the embrittlement temperature is -55 °C, and the compression set in air is 125 at 22 °C at 220 °C. After immersing in 100°C hot water for 7 days, the volume changes by 0-8 times.
  • the geometrical size of the ring lip 33 is equal to the gap value between the tube 2 and the socket 1 of the tube member 1, and the error is within ⁇ 5%.
  • the sealing ring 3 is an elastic rubber sealing ring, and the sealing ring 3 is made of a silica gel material, and the silicone rubber material is selected from a chemical molecular chain sealing agent and a silicone rubber produced by an additive process technology.
  • the outer ring outer diameter dimension of the sealing ring 3 is greater than 5% of the diameter value of the inner ring groove 13 of the outer ring 12 of the socket 1 of the pipe member 1, and the wire diameter of the main ring 31 of the sealing ring 3 is smaller than that of the pipe member 1.
  • the radius R of the maximum inner ring groove 13 of the outer ring 12 of the socket 11 is less than 1% to 5% of the difference between the circumferential average radius r of the outer wall of the inserted pipe 2.
  • the outer diameter of the main ring 31 of the sealing ring 3 is larger than the outer diameter of the inner ring groove of the outer ring 11 of the socket 11 by more than 5%, and the sealing ring 3 of the tube 2 inserted into the socket 11 is radially sealed.
  • the compression ratio is greater than 10%.
  • the invention also provides a process for installing a lip seal welded pipe joint, comprising the following installation steps:
  • the inner diameter of the main ring 31 of the sealing ring 3 after the sealing ring 3 is placed in the inner ring groove 13 of the outer ring 12 should be less than 1 to 7% of the outer diameter of the tube 2 in the socket 11 of the inserted pipe member 1;
  • the tube 2 is inserted into the limiting portion of the socket 11 of the pipe member 1, and the lip 34 of the sealing ring 3 is adjusted to the direction of the sealed medium;
  • the welding process requirements and processes include the following steps:
  • the sealing ring 3 of the same specification is placed into the inner ring groove 13 of the outer ring 12 of the cleaned pipe member 1 socket 11;
  • the welding port is a multi-point welding joint, and specifically refer to FIG.
  • the welding method adopts intermittent welding to maintain a certain cooling amount and cooling time during welding, so that the welding heat does not affect the performance and function of the sealing ring 3.
  • solder joints do not allow excessive soldering or weld perforation, sand holes and other defects.
  • the lubricant of the main ring 31 of the sealing ring 3 is made of sanitary water, the pipe of the pipe 2 is cut by a pipe rolling cutter or the pipe is cut straight, the pipe of the pipe 2 is eliminated, and the outer edge of the pipe is smooth chamfered. Eliminate the sharp edge.
  • the welding pull-out force between the pipe 2 and the pipe member 1 should be greater than twice the thrust of the pipe medium in the pipe section.
  • the embodiment is basically the same as the first embodiment, and the difference is that the welding process is a multi-stage welding, and the welding port is a multi-section welding port.
  • the embodiment is basically the same as the first embodiment, and the difference is that the welding process is all-welding, and the welding port is a full welded joint.

Abstract

一种唇密封焊接式管件接口及其安装工艺，其中唇密封焊接式管接口包括带承口的管件、插入在管件承口内的管子和位于管件承口外凸环的内环槽壁和管子插入承口部分外侧壁之间设置的带有主环和环唇的密封圈，管件承口在其口部具有焊接结构与管子焊接固定，密封圈的环唇呈筒锥体且与管子轴向方向成0－89度，密封圈的环唇贴合在管子外壁且保持10％～30％的密封拉伸量比值，密封圈主环外侧壁或主环上的附唇与管件向外凸环的内环槽壁贴合且保持密封压缩。该种唇密封焊接式管件接口及其安装工艺具有结构稳定、密封性能好、使用寿命长等现有技术所不具备的优点。

Description

一种唇密封焊接式管件接口及其安装工艺
技术领域
本发明涉及管道安装领域，特别是一种唇密封焊接式管件接口及其安装工艺。
背景技术
薄壁金属管及管件接口焊接工艺方法的连接方式，长期以来工程的应用是十分困难的，例如用于水管、油气管等各种压力介质的管道系统的薄壁不锈钢管道，其管径与壁厚关系小于φ50mm直径管的壁厚在0.2-1.0mm；小于φ100mm直径管的壁厚在1.0-1.5mm；小于φ200mm直径管的壁厚在1.5-2.0mm；直径φ1000mm管的壁厚在3.0-4.0mm等薄壁管的焊接，常常在对接口发生错边，严重影响质量问题，这是由于管子断面的形变不园度引起的，焊接的难度大，焊口厚薄不均，耗工时长，还常常被焊穿孔，质量得不到保障，影响了行业的发展。为解决本行业这一问题，近几年技术发展设计了承插口搭接焊工艺方法。解决了对接口错边问题，确产生了另一个很严重的问题，焊接口的火色无法通过保护气体解决，夹缝内无法消除焊接火色，也无法解决避免火色问题，引发火色腐蚀和间隙腐蚀，造成焊接口不定期的穿孔，不间断的焊口腐蚀破坏，留下了严重的工程隐患，长期以来无法得到技术组织的认可。究其原因，焊接管口要解决三个核心功能问题，一是焊口达到密封；二是焊口焊接牢固，不能在焊接口处发生拔脱断裂破坏，不得留下蚀腐等缺陷式隐患；三是对接口尺寸要均匀不能错位影响局部厚度变小造成强度问题。其焊接的技术核心是牢固密封，必须由同一道工艺完成。
有鉴于此，本发明的目的在于提供一种新的技术工艺方法
方案以解决现存在的技术问题。
发明内容
为了克服现有技术的不足，本发明提供一种唇密封焊接式管接口及其安装工艺，为解决现有的管件密封焊接安装中存在的结构问题及技术缺陷，提供了一种新的接口及技术方案。
本发明解决其技术问题所采用的技术方案是：
一种唇密封焊接式管接口，所述管接口包括带承口的管件、插入在管件承口内的管子和位于管件承口外凸环的内环槽壁和管子插入承口部分外侧壁之间设置的带有主环、环唇和附唇的密封圈，所述管件承口在其端口部具有焊接结构与管子焊接固定，所述密封圈的环唇呈筒锥体且与管子轴向方向成0-89度，密封圈的环唇贴合在管子外壁且保持10%～30%的密封拉伸量比值，密封圈主环外侧壁或主环上的附唇与管件向外凸环的内环槽壁贴合且保持密封压缩。
作为上述技术方案的改进，所述密封圈的环唇在安装过程中偏向被密封介质的一侧，环唇的唇口厚度尺寸与管子、管件承口之间的间隙尺寸相一致。
作为上述技术方案的进一步改进，所述密封圈的环唇唇口的密封弹性拉伸比大于或等于10%且小于或等于30%，密封圈的抗撕强度最小值为20KN/M，扯断拉伸率为300%～500%，拉伸强度最小为9MPa，其硬度（1RHD）为50～80度，允许偏差±4，脆化温度满足-55℃，在空气的压缩永久变形在125℃下22h最大220，100℃热水浸泡7d后体积变化0～8倍，环唇的几何尺寸与管子和管件承口间隙值相等，其误差在±5%以内。
作为上述技术方案的进一步改进，所述密封圈为弹性密封圈，密封圈采用硅胶料制成，所述硅胶料选用了化学分子链封闭剂，用加成法工艺技术生产的硅橡胶。
作为上述技术方案的进一步改进，所述密封圈的主环外径尺寸值大于管件承口外凸环的内环槽直径值的5%以上，密封圈主环的线径小于管件承口凸环最大内环槽半径减去插入管子外壁环周平均半径之差值的1%～5%。
作为上述技术方案的进一步改进，所述密封圈主环的外直径几何尺寸大于承口凸环的内环槽最大直径尺寸的5%以上，管子插入管件承口后的密封圈径向线密封压缩比大于10%以上。
一种唇密封焊接式管接口的安装工艺，包括以下的安装步骤：
（1）、首先将密封圈放置入清洁的管件承口的外凸环的内环槽；
（2）、检查密封圈与凸环内环槽的贴合度，密封圈外直径大于凸环的内环槽直径5%以上，达到紧密贴合；
（3）、检查密封圈置入凸环内环槽后的密封圈主环的内直径尺寸，应小于插入管件承口内管子外径的1～7%；
（4）、将被插入承口的管子端口的毛刺清理干净，端口外沿消除锋利刀口，管子端口设有不小于R0.5的圆弧角；
（5）、将被插入管件承口的管子端部与管件密封圈上涂摸清水，作为润滑剂；
（6）、管子插入管件承口的限位部分，调节密封圈环唇唇口在被密封介质的方向侧；
（7）、用焊接工具将管件承口与管子焊接成为一个整体，焊接部位位于管件承口的端口部位置；
作为上述技术方案的进一步改进，所述焊接工艺要求及过程包括以下步骤：
（1）、将同规格的密封圈放置入清洁的管件承口的外凸环的内环槽；
（2）、用管子滚动式切割刀切割管子，或者直切管子，清理干净管端口的毛刺，端口外沿消除锋利刀口，有不小于R.0.5的圆弧角，避免对胶圈损伤；
（3）、将管子与管件密封圈上涂摸清水，再把管子插入管件承口的限位部分；
（4）、在管件承口的口部沿着其口部采用点焊接的焊接工艺将管件承口与插入承口的管子焊接固定，不会造成拉力拔脱现象，所述的焊口为多点焊口。
（5）、焊接方法采用间歇式焊接，保持焊接时有一定的冷却量和冷却时间，使焊接热量不影响到密封圈的性能及功能。
（6）、焊点不充许过度焊接或焊穿孔、砂眼等缺陷。
（7）、不锈钢材料不充许残留焊接后的不良火色等易引起腐蚀的问题。
作为上述焊接的另一种实施方式，所述的焊接工艺为多段焊接，所述的焊口为多段焊口。
作为上述焊接的第三种实施方式，所述的焊接工艺为全焊接，所述的焊口为全焊口。
作为上述技术方案的进一步改进，所述密封圈主唇环的润滑剂例采用卫生级清水或滑石粉，管子的管口采用管子滚动式切割刀切割或者直切管子，管子的管口消除毛利，管口外缘呈光滑的倒角，消除锋利的刀口。
作为上述技术方案的进一步改进，管子与管件之间的焊接抗拔脱力应大于管内介质对管道断面推力的2倍以上。
本发明的有益效果是：本发明提供了一种唇密封焊接式管接口及其安装工艺方法方案，从结构上及其安装工艺上进行管道安装，改变为焊接口的工艺结构方式，方法。提高了该种焊接式管件结构的结构稳固性和密封性能、避免泄漏、管道爆炸等情况出现。该种唇密封焊接式管接口及其安装工艺解决了现有的管件安装中存在的焊接不良、易产生密封性问题，操作困难等技术缺陷，并且大量的减少了劳动强度及焊接工程量，检验工作量，提高工程质量减少施工量，缩短工程建设时间。
附图说明
下面结合附图和实施例对本发明进一步说明。
图1是本发明中密封圈的结构剖切示意图；
图2是本发明中密封圈的另一种实施结构；
图3是本发明中密封圈的第三种实施结构；
图4是本发明中密封圈的第四种实施结构；
图5是本发明中管接口焊接前的结构示意图；
图6是本发明中管接口焊接后的结构示意图；
图7是本发明中管接口焊接部为点焊接的结构示意图；
图8是本发明中管接口焊接部为多段焊接的结构示意图；
图9是本发明中管接口焊接部为全焊接的结构示意图；
图10是本发明中管接口内环槽与管子外径配合示意图。
具体实施方式
以下将结合实施例和附图对本发明的构思、具体结构及产生的技术效果进行清楚、完整地描述，以充分地理解本发明的目的、特征和效果。显然，所描述的实施例只是本发明的一部分实施例，而不是全部实施例，基于本发明的实施例，本领域的技术人员在不付出创造性劳动的前提下所获得的其他实施例，均属于本发明保护的范围。另外，专利中涉及到的所有联接/连接关系，并非单指构件直接相接，而是指可根据具体实施情况，通过添加或减少联接辅件，来组成更优的联接结构。本发明创造中的各个技术特征，在不互相矛盾冲突的前提下可以交互组合，参照图1-10。
具体参照图1-6，一种唇密封焊接式管接口，所述管接口包括带承口11的管件1、插入在管件1承口11内的管子2和位于管件1承口11外凸环12的内环槽13壁和管子2插入承口11部分外侧壁之间设置的带有主环31、环唇32和附唇33的密封圈3，所述管件1承口11在其口部具有焊接结构4与管子2焊接固定，所述密封圈3的环唇32呈筒锥体且与管子2轴向方向成0-89度，密封圈3的环唇32贴合在管子2外壁且保持10%～30%的密封拉伸量比值，密封圈3主环31外侧壁的主环31或附唇32与管件1向外凸环12的内环槽13壁贴合且保持密封压缩。
所述的密封圈3包括主环31、由主环31向着其中心方向延伸的环唇32和设置在主环31外侧的附唇33，所述环唇32上设置有唇口34。在实施本发明时，密封圈3的主环31位于承口11的内环槽13内，密封圈3的环唇32套设在管子2上，密封圈3的唇口34贴合在管子2的外壁，密封圈3的附唇33贴合在承口11内环槽13壁部上。
附唇33的重大意义功能在于从根本上消除低压渗漏的可能性，加强了局部密封和超低压密封的难题，也对调节自由压缩比，对局部密封到了提高，在高压力情况下又起到二次密封自密封功效，是一项重要的强密封结构措施。
附唇33结构继主唇31之后的另一项重大密封方案，是管件密封面的必不可少的保障，在本实施例中，所述主环31上设置有多道附唇33且多道附唇33形成多道谜宫结构，这对提高密封腔的密封性能非常有效，这种设计是管道工程中前所未有的，管件管子双件双环面双向唇口的整体强化式密封。
所述密封圈3的环唇32在安装过程中偏向被密封介质的一侧，环唇32的唇口34厚度尺寸与管子2、管件1承口11之间的间隙尺寸相一致。
所述密封圈3的环唇32唇口34的密封弹性拉伸比大于或等于10%且小于或等于30%，密封圈的抗撕强度最小值为20KN/M，扯断拉伸率为300%～500%，拉伸强度最小为9MPa，其硬度（1RHD）为50～80度，允许偏差±4，脆化温度满足-55℃，在空气的压缩永久变形在125℃下22h最大220，100℃热水浸泡7d后体积变化0～8倍，环唇33的几何尺寸与管子2和管件1承口11间隙值相等，其误差在±5%以内。
所述密封圈3为弹性橡胶密封圈，密封圈3采用硅胶料制成，所述硅胶料选用了化学分子链封闭剂，用加成法工艺技术生产的硅橡胶。
参照图10，所述密封圈3的主环外径尺寸值大于管件1承口11外凸环12的内环槽13直径值的5%以上，密封圈3主环31的线径小于管件1承口11外凸环12最大内环槽13半径R减去插入管子2外壁环周平均半径r之差值的1%～5%。
所述密封圈3主环31的外直径几何尺寸大于承口11外凸环12的内环槽最大直径尺寸的5%以上，管子2插入管件1承口11后的密封圈3径向线密封压缩比大于10%以上。
本发明还提供了一种唇密封焊接式管接口的安装工艺，包括以下的安装步骤：
（1）、首先将密封圈3放置入清洁的管件1承口11的外凸环12的内环槽13；
（2）、检查密封圈3与凸环内环槽的贴合度，密封,3外直径大于外凸环12的内环槽13直径5%以上，达到紧密贴合；
（3）、检查密封圈3置入外凸环12内环槽13后的密封圈3主环31的内直径尺寸，应小于插入管件1承口11内管子2外径的1～7%；
（4）、将被插入承口11的管子2端口的毛刺清理干净，端口外沿消除锋利刀口，管子2端口设有不小于R0.5的圆弧角；
（5）、将被插入管件1承口11的管子2端部与管件1密封圈3上涂摸清水，作为润滑剂；
（6）、管子2插入管件1承口11的限位部分，调节密封圈3环唇32唇口34在被密封介质的方向侧；
（7）、用焊接工具将管件1承口11与管子2焊接成为一个整体，焊接部位位于管件1承口11的端口部位置；
所述焊接工艺要求及过程包括以下步骤：
（1）、将同规格的密封圈3放置入清洁的管件1承口11的外凸环12的内环槽13；
（2）、用管子滚动式切割刀切割管子2，或者直切管子2，清理干净管端口的毛刺，端口外沿消除锋利刀口，有不小于R.0.5的圆弧角，避免对胶圈损伤；
（3）、将管子2与管件1密封圈3上涂摸清水，再把管子2插入管件1承口11的限位部分；
（4）、在管件1承口11的口部沿着其口部采用点焊接的焊接工艺将管件1承口11与插入承口11的管子2焊接固定，不会造成拉力拔脱现象，所述的焊口为多点焊口，具体参照图7。
（5）、焊接方法采用间歇式焊接，保持焊接时有一定的冷却量和冷却时间，使焊接热量不影响到密封圈3的性能及功能。
（6）、焊点不充许过度焊接或焊穿孔、砂眼等缺陷。
（7）、不锈钢材料不充许残留焊接后的不良火色等易引起腐蚀的问题。
所述密封圈3主环31的润滑剂例采用卫生级清水，管子2的管口采用管子滚动式切割刀切割或者直切管子，管子2的管口消除毛利，管口外缘呈光滑的倒角，消除锋利的刀口。
所述管子2与管件1之间的焊接抗拔脱力应大于管内介质对管道断面推力的2倍以上。
实施例2：
参照图8，本实施例与实施例1基本相同，其不同点在于：所述的焊接工艺为多段焊接，所述的焊口为多段焊口。
实施例3：
参照图9，本实施例与实施例1基本相同，其不同点在于：所述的焊接工艺为全焊接，所述的焊口为全焊口。
以上是对本发明的较佳实施进行了具体说明，但本发明创造并不限于所述实施例，熟悉本领域的技术人员在不违背本发明精神的前提下还可做出种种的等同变形或替换，这些等同的变形或替换均包含在本申请权利要求所限定的范围内。

Claims (12)

  1. 一种唇密封焊接式管接口，其特征在于：所述管接口包括带承口的管件、插入在管件承口内的管子和位于管件承口外凸环的内环槽壁和管子插入承口部分外侧壁之间设置的带有主环、环唇和附唇的密封圈，所述管件承口在其口部具有焊接结构与管子焊接固定，所述密封圈的环唇呈筒锥体且与管子轴向方向成0-89度，密封圈的环唇贴合在管子外壁且保持10%～30%的密封拉伸量比值，密封圈主环外侧壁或主环上的附唇与管件向外凸环的内环槽壁贴合且保持压缩密封。
  2. 根据权利要求1所述的一种唇密封焊接式管接口，其特征在于：所述密封圈的环唇在安装过程中偏向被密封介质的一侧，环唇的唇口厚度尺寸与管子、管件承口之间的间隙尺寸相一致。
  3. 根据权利要求1所述的一种唇密封焊接式管接口，其特征在于：所述密封圈的环唇唇口的密封弹性拉伸比大于或等于10%且小于或等于30%，密封圈的抗撕强度最小值为20KN/M，扯断拉伸率为300%～500%，拉伸强度最小为9MPa，其硬度（1RHD）为50～80度，允许偏差±4，脆化温度满足-55℃，在空气的压缩永久变形在125℃下22h最大220，100℃热水浸泡7d后体积变化0～8倍，环唇的几何尺寸与管子和管件承口间隙值相等，其误差在±5%以内。
  4. 根据权利要求3所述的一种唇密封焊接式管接口，其特征在于：所述密封圈为弹性密封圈，密封圈采用硅胶料制成，所述硅胶料为选用了化学分子链封闭剂，用加成法工艺技术生产的硅橡胶。
  5. 根据权利要求3所述的一种唇密封焊接式管接口，其特征在于：所述密封圈的主环外径尺寸值大于管件承口外凸环的内环槽直径值的5%以上，密封圈主环的线径小于管件承口外凸环最大内环槽半径（R）减去插入管子外壁环周平均半径(r)之差值的1%～5%。
  6. 根据权利要求5所述的一种唇密封焊接式管接口，其特征在于：所述密封圈主环的外直径几何尺寸大于承口凸环的内环槽最大直径尺寸的5%以上，管子插入管件承口后的密封圈径向线密封压缩比大于10%以上。
  7. 一种唇密封焊接式管接口的安装工艺，其特征在于包括以下的安装步骤：
    （1）、首先将密封圈放置入清洁的管件承口的外凸环的内环槽；
    （2）、检查密封圈与凸环内环槽的贴合度，密封圈外直径大于凸环的内环槽直径5%以上，达到紧密贴合；
    （3）、检查密封圈置入凸环内环槽后的密封圈主环的内直径尺寸，应小于插入管件承口内管子外径的1～7%；
    （4）、将被插入承口的管子端口的毛刺清理干净，端口外沿消除锋利刀口，管子端口设有不小于R0.5的圆弧角；
    （5）、将被插入管件承口的管子端部与管件密封圈上涂摸清水，作为润滑剂；
    （6）、管子插入管件承口的限位部分，调节密封圈环唇唇口在被密封介质的方向侧；
    （7）、用焊接工具将管件承口与管子焊接成为一个整体，焊接部位位于管件承口的端口部位置。
  8. 根据权利要求7所述的一种唇密封焊接式管接口的安装工艺，其特征在于：所述焊接工艺要求及过程包括以下步骤：
    （1）、将同规格的密封圈放置入清洁的管件承口的外凸环的内环槽；
    （2）、用管子滚动式切割刀切割管子，或者直切管子，清理干净管端口的毛刺，端口外沿消除锋利刀口，有不小于R.0.5的圆弧角，避免对胶圈损伤；
    （3）、将管子与管件密封圈上涂摸清水，再把管子插入管件承口的限位部分；
    （4）、在管件承口的口部沿着其口部采用点焊接的焊接工艺将管件承口与插入承口的管子焊接固定，不会造成拉力拔脱现象，所述的焊口为多点焊口；
    （5）、焊接方法采用间歇式焊接，保持焊接时有一定的冷却量和冷却时间，使焊接热量不影响到密封圈的性能及功能；
    （6）、焊点不充许过度焊接或焊穿孔、砂眼等缺陷；
    （7）、不锈钢材料不充许残留焊接后的不良火色等易引起腐蚀的问题。
  9. 根据权利要求7所述的一种唇密封焊接式管接口的安装工艺，其特征在于：所述焊接工艺要求及过程包括以下步骤：
    （1）、将同规格的密封圈放置入清洁的管件承口的外凸环的内环槽；
    （2）、用管子滚动式切割刀切割管子，或者直切管子，清理干净管端口的毛刺，端口外沿消除锋利刀口，有不小于R.0.5的圆弧角，避免对胶圈损伤；
    （3）、将管子与管件密封圈上涂摸清水，再把管子插入管件承口的限位部分；
    （4）、在管件承口的口部沿着其口部采用多段焊接的焊接工艺将管件承口与插入承口的管子焊接固定，不会造成拉力拔脱现象，所述的焊口为多段焊口；
    （5）、焊接方法采用间歇式焊接，保持焊接时有一定的冷却量和冷却时间，使焊接热量不影响到密封圈的性能及功能；
    （6）、焊点不充许过度焊接或焊穿孔、砂眼等缺陷；
    （7）、不锈钢材料不充许残留焊接后的不良火色等易引起腐蚀的问题。
  10. 根据权利要求7所述的一种唇密封焊接式管接口的安装工艺，其特征在于：所述焊接工艺要求及过程包括以下步骤：
    （1）、将同规格的密封圈放置入清洁的管件承口的外凸环的内环槽；
    （2）、用管子滚动式切割刀切割管子，或者直切管子，清理干净管端口的毛刺，端口外沿消除锋利刀口，有不小于R.0.5的圆弧角，避免对胶圈损伤；
    （3）、将管子与管件密封圈上涂摸清水，再把管子插入管件承口的限位部分；
    （4）、在管件承口的口部沿着其口部采用全焊接的焊接工艺将管件承口与插入承口的管子焊接固定，不会造成拉力拔脱现象，所述的焊口为全焊口；
    （5）、焊接方法采用间歇式焊接，保持焊接时有一定的冷却量和冷却时间，使焊接热量不影响到密封圈的性能及功能；
    （6）、焊点不充许过度焊接或焊穿孔、砂眼等缺陷；
    （7）、不锈钢材料不充许残留焊接后的不良火色等易引起腐蚀的问题。
  11. 根据权利要求8-10任一项所述的一种唇密封焊接式管接口的安装工艺，其特征在于：所述密封圈主唇环的润滑剂例采用卫生级清水或滑石粉，管子的管口采用管子滚动式切割刀切割或者直切管子，管子的管口消除毛利，管口外缘呈光滑的倒角，消除锋利的刀口。
  12. 根据权利要求11所述的一种唇密封焊接式管接口的安装工艺，其特征在于：管子与管件之间的焊接抗拔脱力应大于管内介质对管道断面推力的2倍以上。
PCT/CN2015/084827 2014-08-29 2015-07-22 一种唇密封焊接式管件接口及其安装工艺 WO2016029759A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410436817.3A CN104390079A (zh) 2014-08-29 2014-08-29 一种唇密封焊接式管件接口及其安装工艺
CN201410436817.3 2014-08-29

Publications (1)

Publication Number Publication Date
WO2016029759A1 true WO2016029759A1 (zh) 2016-03-03

Family

ID=52608020

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/084827 WO2016029759A1 (zh) 2014-08-29 2015-07-22 一种唇密封焊接式管件接口及其安装工艺

Country Status (2)

Country Link
CN (1) CN104390079A (zh)
WO (1) WO2016029759A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2555583A (en) * 2016-10-28 2018-05-09 Peak Pipe Systems Ltd A pipe
CN116475701A (zh) * 2023-05-16 2023-07-25 河北宏源特钢管业集团有限公司 一种管道的工厂化预制方法

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104197126A (zh) * 2014-08-29 2014-12-10 陈征 一种唇密封卡压式管件接头及其安装工艺
CN104930291A (zh) * 2015-07-07 2015-09-23 孙圣县 一种热熔管件
CN106895219A (zh) * 2017-04-28 2017-06-27 深圳市民乐管业有限公司 一种管道连接组件、管道连接结构及连接方法
CN107035918A (zh) * 2017-06-07 2017-08-11 天津市源泉市政工程有限公司 一种给水管件工程施工方法
US10982798B2 (en) * 2017-07-07 2021-04-20 Mueller Industries, Inc. Press-connect fitting with membrane seal
CN108180337A (zh) * 2018-01-16 2018-06-19 杨阳 三层复合聚丙烯高温静音排水管承插式连接工艺
CN108458183A (zh) * 2018-04-17 2018-08-28 珠海霄鹰科技发展有限公司 关节式万向排气管
EP4083486B1 (de) 2021-04-29 2023-02-08 AVS, Ingenieur J.C. Römer GmbH Leitungskupplung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5918914A (en) * 1997-11-25 1999-07-06 Morris; Waldo Ivan Sealing lock joint pipe fitting
CN2830849Y (zh) * 2005-09-09 2006-10-25 廖仲力 薄壁不锈钢管和铜管的插接点焊锁口管件
CN101328995A (zh) * 2007-12-14 2008-12-24 苏家新 不锈钢管卡压点焊接方法
CN204164528U (zh) * 2014-08-29 2015-02-18 陈征 一种应用单唇密封圈的焊接式管件接头
CN204164527U (zh) * 2014-08-29 2015-02-18 陈征 一种应用双唇密封圈的焊接式管件接头

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602004031544D1 (de) * 2003-11-20 2011-04-07 Tyco Water Pty Ltd Rohhrverbindung zwischen metallischen Rohren sowie Verfahren zur Herstellung einer solchen Verbindung
CN2753939Y (zh) * 2004-12-31 2006-01-25 焦元武 一种卡压式管件
US20100078937A1 (en) * 2005-06-10 2010-04-01 S & B Technical Products, Inc. Self Restrained Ductile Iron Fitting
EP2108875A1 (de) * 2008-04-11 2009-10-14 R. Nussbaum AG Anschlussstück
US9188260B2 (en) * 2008-08-01 2015-11-17 Nibco Inc. Crimp evident seal
EP2428717B1 (en) * 2010-09-09 2014-05-07 Faster S.p.A. Gasket for quick couplings

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5918914A (en) * 1997-11-25 1999-07-06 Morris; Waldo Ivan Sealing lock joint pipe fitting
CN2830849Y (zh) * 2005-09-09 2006-10-25 廖仲力 薄壁不锈钢管和铜管的插接点焊锁口管件
CN101328995A (zh) * 2007-12-14 2008-12-24 苏家新 不锈钢管卡压点焊接方法
CN204164528U (zh) * 2014-08-29 2015-02-18 陈征 一种应用单唇密封圈的焊接式管件接头
CN204164527U (zh) * 2014-08-29 2015-02-18 陈征 一种应用双唇密封圈的焊接式管件接头

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2555583A (en) * 2016-10-28 2018-05-09 Peak Pipe Systems Ltd A pipe
CN116475701A (zh) * 2023-05-16 2023-07-25 河北宏源特钢管业集团有限公司 一种管道的工厂化预制方法

Also Published As

Publication number Publication date
CN104390079A (zh) 2015-03-04

Similar Documents

Publication Publication Date Title
WO2016029759A1 (zh) 一种唇密封焊接式管件接口及其安装工艺
WO2016029760A1 (zh) 一种唇密封卡压式管件接头及其安装工艺
US2037962A (en) Pipe joint and method of making the same
US7488009B2 (en) Pipe joint
US3325191A (en) Lined pipe joint and process of forming same
JP3524487B2 (ja) 薄肉管継手
US2699344A (en) Repair coupling with temporary and permanent seals
JP2009014115A (ja) 接続構造
KR101865460B1 (ko) 패킹의 기밀성을 높인 신축배관
KR101679615B1 (ko) 이너스테인레스 신축관 제조방법
US4027901A (en) Asbestos-cement pipe fitting and method for making it
AU2011286156B2 (en) High pressure pipe joint
KR20160074184A (ko) 이너스테인레스 신축관
JPH10227380A (ja) フランジ形管継手
CN217559251U (zh) 一种内衬套管式内涂层管端防脱插接连接装置
JPH084961A (ja) 寸法調節式管継手
JP4189741B2 (ja) 薄肉ステンレス鋼管と継手の接続機構
JP6497929B2 (ja) 配管接続方法及び配管継手装置
CN213236471U (zh) 一种法兰及一种发动机
JP2019178708A (ja) 管内面更生端部の処理構造とその処理方法
CN214305698U (zh) 管段连接结构
JP2007032621A (ja) ガス供給管接続用ネジ
JP5386106B2 (ja) 管継手
KR101895456B1 (ko) 비굴착 보수용 금속관 단부 연결구조와 그 방법
JP2003042361A (ja) ハウジング型管継手の構造

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15835547

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15835547

Country of ref document: EP

Kind code of ref document: A1

32PN Ep: public notification in the ep bulletin as address of the adressee cannot be established

Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 23.08.2017)

122 Ep: pct application non-entry in european phase

Ref document number: 15835547

Country of ref document: EP

Kind code of ref document: A1