WO2017071156A1 - 具有锚定结构的承插式管道接口 - Google Patents

具有锚定结构的承插式管道接口 Download PDF

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Publication number
WO2017071156A1
WO2017071156A1 PCT/CN2016/077804 CN2016077804W WO2017071156A1 WO 2017071156 A1 WO2017071156 A1 WO 2017071156A1 CN 2016077804 W CN2016077804 W CN 2016077804W WO 2017071156 A1 WO2017071156 A1 WO 2017071156A1
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WO
WIPO (PCT)
Prior art keywords
socket
pipe joint
structure according
anchoring
anchor
Prior art date
Application number
PCT/CN2016/077804
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English (en)
French (fr)
Inventor
李成章
李军
申勇
徐军
张涛
左超
刘静
时文博
Original Assignee
新兴铸管股份有限公司
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Publication date
Application filed by 新兴铸管股份有限公司 filed Critical 新兴铸管股份有限公司
Priority to RU2017126478A priority Critical patent/RU2660229C1/ru
Publication of WO2017071156A1 publication Critical patent/WO2017071156A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
    • F16L25/10—Sleeveless joints between two pipes, one being introduced into the 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
    • F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
    • F16L25/06—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means comprising radial locking means

Definitions

  • the present invention relates to a socket type pipe joint, and more particularly to a socket type pipe joint having an anchor structure for connecting a ductile iron pipe.
  • Ductile iron pipe is used in the field of water delivery and gas transmission.
  • the two ends of the ductile iron pipe are respectively the socket and the socket.
  • the main connection mode of the two ductile iron pipes in the pipeline is: the socket of one pipe and the socket of the other pipe Plug-in butt and install a sealant between the socket and the socket.
  • ductile iron pipes are supported by soil or other supports. In areas with poor geological conditions or earthquakes, the supporting soil or other supports are prone to displacement, which may lead to the insertion of sockets and socket parts. In the axial direction relative to the installation direction, the relative movement or tilting movement may cause the sealing effect to be lost and cause a water leakage accident.
  • Prior Art 1 discloses a seal ring having an anchoring member disclosed in EP0526373A1, see Fig. 1a.
  • the anchoring position may change, resulting in a change in the point of attachment of the anchoring member.
  • the anchoring part changes, the depth of the tooth penetration and the number of the inserted can not be guaranteed, affecting the anchoring effect, and when the interface is engaged with a large gap or a small gap, the anchoring component has only one tooth stuck into the pipe wall, and the bearing capacity It weakens and easily leads to the breakage of the teeth.
  • Prior Art 2 discloses a seal with a detachment prevention function and a detachment prevention joint, disclosed in CN102575799A, see Fig. 1b.
  • the anti-disengagement member since the anti-disengagement member has only two teeth, when the interface is deflected or has a large clearance fit, only one tooth of the anti-disengagement member is in contact with the pipe wall, and the pressure bearing capability is lowered, which easily causes the interface to slip.
  • Prior Art 3 discloses an assembly with a sealing gasket having an anchor insert, disclosed in CN103282711A, see Figure 1c.
  • the anchor insert will move with it.
  • the anchor insert will have two points of force, and when the pressure continues to rise, The tip of the anchor insert will move, causing the anchor insert to disengage from the tube wall, causing the interface to fall out.
  • the anchoring insert has two contact points with the pipe wall, preventing the pipe wall from being deflected, resulting in an increase in the shearing force of the pipe wall, which may easily cause the pipe wall to be cracked or the anchoring insert to be broken.
  • Prior Art 4 discloses a sealing device and corresponding components disclosed in CN100557280C, see Figure 1d.
  • the interface when the interface is relatively moved, the other support point of the anchor is in contact with the wall of the socket, and when the local foundation settlement interface is deflected, the anchor cannot adapt to the interface deflection, when the deflection reaches a certain angle Will cause the anchor teeth to break.
  • Prior Art 5 discloses an anchoring seal having an anchoring function, disclosed in US Pat. No. 6,668,652 B2, see Fig. 1e, in the prior art 5, when the anchoring structure is subjected to force, two supporting points Contact with the wall of the socket, and the contact form is contact between the point and the surface. When the pressure inside the tube wall increases, the anchor cannot rotate, and the tooth portion of the anchor will continue to plung into the tube wall, causing the tube wall to rupture. Water seepage and other phenomena.
  • the size of the pipe diameter determines the transportation capacity of the pipe structure, which is limited by the instability caused by its multiple supports and the difficulty of simulation. In order to ensure the reliability, stability, safety and life of the structure, the pipe diameter It has been difficult to significantly improve.
  • the pipe diameter of the plug-in pipe interface of the anchor structure that is common in the market is only DN200 and below, which greatly limits the transportation capacity of the pipe.
  • the technical problem to be solved by the present invention is to provide a socket type pipe joint with an anchor structure, which can improve the reliability of anchoring, prolong the life of the structure, reduce the maintenance cost of the pipeline, and make the optimization simulation of the interface structure easy. Increase pipeline transportation capacity.
  • a socketed pipe joint having an anchoring structure, comprising a socket, a socket, a seal between the socket and the socket for sealing and locking a pipe joint;
  • the socket comprising the first An annular vertical wall, a tapered wall, a cylindrical inner wall and a second annular vertical wall are sequentially connected to the defined annular groove;
  • the seal comprises a ring of elastic material and a plurality of anchors embedded therein;
  • the anchor comprises a head And a plurality of meshing teeth;
  • the anchoring member is provided with a center of rotation, the portion of the head that abuts the annular groove is a circular arc supporting surface, and the arc supporting surface is a convex surface;
  • the abutment region of the face with the annular groove is located at the intersection of the first annular vertical wall and the tapered wall.
  • the present invention has a socketed pipe joint of an anchoring structure, wherein the arcuate support surface is tangent to the first annular vertical wall and the tapered wall.
  • the present invention has a socketed pipe joint of an anchoring structure, wherein an angle formed between the first annular vertical wall and the tapered wall is 130° to 145°.
  • the present invention has a socketed pipe joint of an anchoring structure, wherein an angle formed between the first annular vertical wall and the tapered wall is 138°.
  • the present invention has a socketed pipe joint of an anchoring structure, wherein the anchoring member further includes a concave surface disposed on a side opposite to the arcuate support.
  • the present invention has a socketed pipe joint of an anchoring structure in which the surface of the concave surface is smooth.
  • the invention has a socketed pipe joint with an anchoring structure. After anchoring, the anchoring member has at least two meshing teeth embedded in the pipe wall of the socket.
  • the present invention has a socketed pipe joint of an anchoring structure, wherein the number of the engaging teeth is 3 to 5.
  • the present invention has a socketed pipe joint of an anchoring structure, wherein the number of the meshing teeth is three.
  • the present invention has a socketed pipe joint with an anchoring structure.
  • the arcuate support surface is connected to the first meshing tooth tip by a straight line or a straight line of a straight line, the first meshing
  • the teeth are the meshing teeth closest to the first annular vertical wall.
  • the present invention has a socketed pipe joint with an anchoring structure.
  • the concave surface is connected to the last meshing tooth tip by a convex line, and the last meshing tooth is a distance from the first ring.
  • the farthest meshing teeth of the vertical wall is a socketed pipe joint with an anchoring structure.
  • the present invention has a socketed pipe joint with an anchoring structure, wherein the tooth height difference of the anchoring member is set to 0.2 to 0.8 mm, and the tooth height difference refers to the intermediate meshing tooth tip to the first meshing tooth tip. The vertical distance from the line connecting the last toothed tooth tip.
  • the invention has a socketed pipe joint with an anchoring structure, wherein the meshing teeth are embedded in the wall of the socket pipe by a depth of 0.5 to 1.5 mm.
  • the present invention has a socketed pipe joint of an anchoring structure, wherein the plurality of anchor members are embedded in an annular space at equal intervals.
  • the present invention has a socketed pipe joint with an anchor structure, wherein the plurality of anchor members are embedded in an annular unequal spacing Ring of material.
  • the present invention has a socketed pipe joint of an anchoring structure, wherein the initial angle E of the last engaging tooth is set to 55 to 59.
  • the present invention has a socketed pipe joint of an anchoring structure, wherein the anchoring member is a unitary structure.
  • the present invention has a socketed pipe joint of an anchoring structure, wherein the elastic material ring includes a seal support portion embedded in the annular groove, the anchor is supported by the seal support portion, the head and the mesh The teeth are located outside of the seal support portion.
  • the present invention has a socketed pipe joint of an anchoring structure, wherein the hardness of the circumferential portion of the elastic material ring covering anchor is greater than the hardness of other portions of the elastic material ring.
  • the present invention has a socketed pipe joint of an anchoring structure, wherein the seal comprises a sealing tail, and the structure of the sealing tail is a double lip structure formed by an inner lip and an outer lip, and the outer lip is fitted to the socket, The inner lip is attached to the socket.
  • the invention has a socket type pipe joint with an anchor structure, wherein the seal member comprises a seal tail portion, and the seal tail portion is a ball head structure, a straight line structure, a fold line structure or a semi-arc structure, and the seal tail portion is respectively connected with the socket and the socket fit.
  • the present invention has a socketed pipe joint with an anchoring structure, wherein an angle between the first annular vertical wall and the axis of the socket is 85° to 88°, and an angle between the second annular vertical wall and the axis of the socket is 80 ° ⁇ 84 °.
  • the invention has a socket type pipe joint with an anchor structure, wherein the material of the socket is ductile iron.
  • the invention has a socket type pipe joint with an anchor structure, wherein the pipe diameter is DN80 to DN600.
  • the present invention has the following advantages:
  • the main body of the single anchor is mainly subjected to pressure, and the anchor rotates around the center of rotation of the support portion.
  • the anchor can rotate with the center of rotation, and the specific structural design of the anchor and the fit between the sockets can ensure that at least two meshing teeth are stressed, reducing the shearing force, thus reducing the meshing
  • the problem of tooth breakage and cracking of the pipe wall avoids the leakage of the pipe, and avoids the anchorage member being over-stressed and the pipe wall is too deep, or the force angle is too small, causing the socket to slip off, which improves the reliability of the anchor. Sex.
  • the anchor has a certain support position on the inner wall of the socket, and the contact points on the support position are all on the same arc with a unique rotation point, which is the contact point of the support position and the head of the anchor
  • the arc size is determined.
  • the invention has a socket type pipe joint with an anchor structure, and is suitable for cooperation between sockets of more specifications.
  • the tail structure of the lips, straight lines, fold lines, arcs, ball heads, etc. of the sealing ring is set to adapt to different working conditions and improve the sealing performance.
  • the sealing member is arranged as a non-uniform material, and the hardness of the supporting portion is greater than the hardness of the sealing portion, so that the displacement of the fluid pressure is relatively uniform to the different portions of the sealing member, and the gap caused by the difference in displacement is avoided.
  • the sealing performance is further improved; the socket pipe interface with anchor structure has the largest pipe diameter of DN600, which greatly improves the transportation capacity of the pipeline and improves the transportation efficiency.
  • 1b is a schematic structural view of prior art 2
  • 1c is a schematic structural view of prior art 3
  • 1d is a schematic structural view of prior art 4.
  • 1e is a schematic structural view of a prior art 5;
  • FIG. 2 is a schematic structural view of a socket type pipe joint having an anchor structure according to the present invention
  • Figure 3 is a perspective view showing the three-dimensional structure of the sealing member of the present invention.
  • Figure 4 is a schematic cross-sectional view of the sealing member of the present invention.
  • Figure 5 is a schematic view of the anchoring member of the present invention.
  • 6a, 6b, and 6c are schematic views of the tube wall embedded in the tolerance range of the bearing and the socket without the deflection interface;
  • 7a, 7b, and 7c are schematic views of the deflection interface anchor embedded in the wall of the socket and the socket manufacturing tolerance
  • Figure 8a is a schematic view showing the sealing tail portion of the present invention as a double lip structure
  • Figure 8b is a schematic view showing the sealing tail of the present invention as a ball head structure
  • Figure 8c is a schematic view showing the sealing tail of the present invention in a straight line structure
  • Figure 8d is a schematic view showing the sealing tail portion of the present invention as a broken line structure
  • Fig. 8e is a schematic view showing the sealing tail portion of the present invention having a semicircular arc structure.
  • the socketed pipe interface of the present invention having an anchoring structure includes a socket 67, a socket 66, a seal 65 between the socket 67 and the socket 66 for sealing and locking the pipe interface,
  • the socket 67 and the socket 66 belong to two tubes respectively, and the two tubes are inserted and docked through the socket and the socket.
  • the socket 67 includes an annular groove 5 defined by a first annular vertical wall 1, a tapered wall 2, a cylindrical inner wall 3 and a second annular vertical wall 4, which are used to support the sealing member 65, the sealing member 65 includes a ring of elastomeric material 69 and a plurality of anchors 68 embedded therein.
  • the plurality of anchors 68 can be annularly and equally spaced into the ring of elastomeric material 69. Of course, the plurality of anchors 68 can also be annular, not The elastic material ring 69 is embedded at equal intervals.
  • the plurality of anchors 68 are of unitary construction.
  • the anchor 68 in the sealing member 65 is subjected to the force from the socket 66, which is offset from the mounting position, and the annular groove 5 is used to support the sealing member 65. That is, the seal 65 is prevented from being displaced from the mounting position during the connection of the socket 67 to the socket 66.
  • the annular groove needs to be specifically designed according to the manufacturing process of the cast pipe, the installation requirements of the seal 65, the force of the anchor 68 in the seal 65, and the size of the joint.
  • the anchor member 68 includes a head portion 51 adapted to be inserted into the annular groove 5 and a plurality of meshing teeth 54 adapted to be inserted into the socket 66, and a concave surface 52 disposed on the opposite side of the circular arc-shaped support surface 50, the surface of the concave surface 52 being smooth .
  • the anchoring member 68 is provided with a rotating center 55.
  • the portion of the head 51 that abuts the annular groove 5 is a circular arc supporting surface 50.
  • the arc supporting surface 50 is a convex surface, and the circular arc supporting surface 50 abuts the annular groove.
  • the region is located at the intersection of the first annular vertical wall 1 and the tapered wall 2, and during the deflection of the socket 67 and the socket 66, the anchor 68 rotates with the center of rotation 55.
  • the arcuate support surface 50 is tangent to both the first annular vertical wall 1 and the tapered wall 2.
  • the angle formed between the first annular vertical wall 1 and the tapered wall 2 is 130 to 145, preferably 138.
  • the number of the meshing teeth 54 is 3 to 5, preferably 3.
  • the anchor member 68 After anchoring, the anchor member 68 has at least two engaging teeth 54 embedded in the wall of the socket 66, and the engaging teeth 54 are embedded in the wall of the socket 66 to a depth of 0.5 to 1.5 mm.
  • the circular arc support surface 50 is connected to the first meshing tooth tip by a straight line or a straight line of a straight line, the first meshing tooth is the meshing tooth 54 closest to the first annular vertical wall 1;
  • the concave surface 52 is connected to the tooth tip of the last engaging tooth 54 by a convex fold line, and the last engaging tooth 54 is the meshing tooth 54 farthest from the first annular vertical wall 1; the anchoring member
  • the tooth height difference of 68 is set to 0.2 to 0.8 mm, and the tooth height difference means the vertical distance from the tooth tip of the intermediate meshing tooth 54 to the line connecting the tooth tip of the first meshing tooth 54 and the tooth tip of the last meshing tooth 54.
  • the initial angle E of the last meshing tooth 54 is set to 55° to 59°, and the initial angle E is the angle between the line connecting the tip of the last meshing tooth 54 and the center of rotation 55 with the axial horizontal line.
  • the angle between the first annular vertical wall 1 and the axis of the socket is 85° to 88°, and the angle between the second annular vertical wall 4 and the axis of the socket is 80° to 84°.
  • the elastomeric material ring 69 includes a sealing support portion 60 and a sealing portion 61 that are embedded in the annular groove 5, and the anchor 68 is supported by the sealing support portion 60, and the head 51 and the engaging teeth 54 are located outside the sealing support portion 60.
  • Sealing support 60 is used for fixing the anchoring member 68, supporting the sealing portion 61, preventing the sealing member 65 from being deviated during the installation process, and acting on the anchoring certain radial force after the interface is installed to ensure proper engagement of the anchoring member with the socket; the elastic material ring 69
  • the hardness of the circumferential portion of the coated anchor is greater than the hardness of other portions of the elastic material ring 69.
  • the sealing member 65 includes a sealing tail portion 62.
  • the sealing tail portion 62 has a double lip structure formed by the inner lip 63 and the outer lip 64.
  • the outer lip 64 is engaged with the socket 67, and the inner lip 63 is engaged with the socket 66.
  • the sealing tail portion 62 is preferably Double lip structure to withstand large water pressure.
  • the seal tail 62 can also be a ball head structure, a straight line structure, a fold line structure or a semi-arc structure, and the seal tail portion 62 is respectively engaged with the socket 67 and the socket 66.
  • the anchor 68 During the rotation of the anchor 68 around the center of rotation 55, at least two meshing teeth 54 are embedded in the wall of the socket 66.
  • the tooth height difference of the anchor 68 is set to 0.2 to 0.8 mm.
  • the depth of the meshing teeth 54 that are inserted into the socket 66 is between 0.5 and 1.5 mm.
  • the third meshing tooth of the anchor 68 (the tooth farthest from the arc support surface 50) has an angle E between the tooth center of the tooth tip and the support portion and the axial horizontal line, and the initial angle E is set to 55°. 59°.
  • the initial angle E is set to ensure the length of the sealing surface for better sealing.
  • the concave surface 52 of the anchor member 68 serves to improve the fixing reliability of the anchor member 68 in the sealing member 65, leaving sufficient deformation space for the sealing support 60 of the sealing member 65 of the fixing anchor member 68.
  • the cross-sectional shape of the anchor member 68 and the arc support surface 50 match the angle formed by the intersection of the first annular wall 1 and the tapered wall 2 in the socket 67.
  • the machining reference line 53 on the anchor member 68 is a positional line in which the tip end portion of the engaging tooth 54 is distributed in the anchor member 68 to accommodate the dimensional tolerances of the cast tube socket 67 and the socket 66 and the requirements within the allowable deflection range. It is ensured that at least two meshing teeth perform the required anchoring action under various dimensional tolerances and deflection conditions.
  • the anchor when the dimensional tolerances of the sealing surface of the socket and the outer diameter of the socket are respectively taken to different limits, and the interface is deflected, the anchor can also ensure that the two engaging teeth are inserted into the socket.
  • the wall has a depth of between 0.7 and 1.2 mm.
  • the hardness of the left circumferential portion of the seal member 65 (the portion of the covering anchor 68) is greater than the hardness of the right portion of the sealing member 65.
  • the sealing member 65 of this structure functions as a support for the left side.
  • the partial hardness is large, and the portion on the right side that functions as a seal is elastic. Since the anchor 68 is distributed in the seal 65 (see FIG. 3), the seal 65 is deformed by the fluid pressure in the tube, and the region including the anchor 68 is inserted into the tube wall due to the meshing teeth.
  • the region not including the anchoring member While hindering the deformation of the sealing member 65, the region not including the anchoring member has a relatively high hardness due to the left side supporting portion thereof, so that the deformation of the sealing member 65 including the anchoring portion and the region not including the anchoring portion is relatively uniform.
  • the hardness can provide better support, reduce the shear force of the anchor to the pipe wall, and better protect the meshing teeth and the pipe wall of the anchor.
  • the sealing tails are respectively designed as a ball head or a straight type.
  • the sealing space on the deflecting side with a small unloading displacement becomes larger, and the sealing scheme is designed.
  • the filling of the seal can be increased when the interface is deflected to avoid leakage of fluid in the tube.
  • the sealing tail portion is a fold line structure. Since the folding line structure has a V-shaped groove, the sealing portion on both sides is allowed to have a relatively large deformation. When the socket is inserted into the socket, the resistance is small, and the insertion of the socket end is easy.
  • the sealing tail has a semi-arc structure.
  • the force acts on the semi-circular arc, and the sealing position is easy to open, which enhances the sealing performance and avoids pipeline leakage.
  • the socket-type pipe joint with anchor structure of the invention has a great influence in the field of water and gas transmission. Compared with the background art, the socket type pipe joint with the anchor structure has the advantages of significantly improved anchoring reliability, prolonged service life, greatly reduced pipeline maintenance cost, and greatly improved pipeline transportation capacity.
  • the socket type pipe joint with the anchor structure of the invention has strong industrial applicability and operability, and is significant for pipeline transportation.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints Allowing Movement (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Abstract

公开了一种具有锚定结构的承插式管道接口，涉及一种用于连接球墨铸铁管的具有锚定结构的承插式管道接口。该承插式管道接口包括承口（67）、插口（66）、在承口（67）和插口（66）之间的用于密封和锁定管道接口的密封件（65）；承口（67）包括由第一环形竖壁（1）、锥形壁（2）、圆柱形内壁（3）和第二环形竖壁（4）依次连接界定的环形沟槽（5）；密封件（65）包括弹性材料环（69）和嵌入其中的多个锚定件（68）；锚定件（68）包括头部（51）和多个啮合齿（54）；锚定件（68）上设置有旋转圆心（55），头部（51）与环形沟槽（5）相抵接的部分为圆弧支撑面（50）；圆弧支撑面（50）与环形沟槽（5）的抵接区域位于第一环形竖壁（1）和锥形壁（2）的交接处。该承插式管道接口能够提高锚定可靠性、延长结构寿命、降低管道维护成本、使接口结构的优化仿真容易进行、增大管道运输能力。

Description

具有锚定结构的承插式管道接口 技术领域
本发明涉及一种承插式管道接口，特别是涉及一种用于连接球墨铸铁管的具有锚定结构的承插式管道接口。
背景技术
球墨铸铁管应用在输水输气领域，球墨铸铁管两端分别是承口和插口，在管线中两根球墨铸铁管的主要连接方式为：一根管的承口与另一根管的插口插入式对接，并在承口和插口之间安装密封胶圈。在使用过程中球墨铸铁管以土壤或其它支撑物作支撑，在地质条件差或易发生地震的地区，因为支撑土壤或其他支撑物易发生位移，易导致插入式对接的承口和插口部件产生与安装方向相反的轴向相对运动或倾转运动，严重时，该结构可能失去密封效果，造成输水泄漏事故。
为防止球墨铸铁管间承口与插口的连接因外力作用而失去密封效果，目前，采取的措施是使用具有锚定接头的承口和插口。具有锚定结构的管道接口大都采用在密封胶圈里面嵌入锚定件，如：
(1)现有技术1公开了一种具有锚定部件的密封圈，公开号为EP0526373A1，参见附图1a。在现有技术1中，锚定部件在接口的不同间隙之间配合时，锚定位置会发生变化，导致锚定部件受力点发生变化。锚定部位发生变化后，齿的扎入深度及扎入数量无法保证，影响锚定效果，并且当接口在大间隙或小间隙配合时，锚定部件只有一个齿扎入管壁，承压能力减弱，容易导致齿的断裂。
(2)现有技术2公开了一种带有防脱离功能的密封件及防脱离管接头，公开号为CN102575799A，参见附图1b。在现有技术2中，由于其防脱离部件只有两个齿，当接口发生偏转或大间隙配合时，防脱离部件只有一个齿与管壁接触，承压能力降低，容易导致接口滑脱。
(3)现有技术3公开了一种带有具有锚定插入物的密封垫圈的组件，公开号为CN103282711A，参见附图1c。在现有技术3中，当接口受到压力，承插口发生相对运动时，锚定插入物将随之移动，此时，锚定插入物将有两个受力点，当压力继续升高时，锚定插入物顶端将发生移动，导致锚定插入物脱离管壁，致使接口脱落。同时当接口发生偏转时，锚定插入物与管壁有两个接触点，阻止管壁发生偏转，导致管壁受剪切力增大，容易引起管壁扎裂或锚定插入物断裂等现象。
(4)现有技术4公开了一种密封装置以及相应的组件，公开号为CN100557280C，参见附图1d。在现有技术4中，当接口发生相对移动时，锚定件另一个支撑点与承口管壁接触，当地基沉降接口发生偏转时，锚定件无法适应接口偏转，当偏转达到一定角度时，会致使锚定件齿的断裂。
(5)现有技术5公开了一种具有锚定功能的锚定密封件，公开号为US6688652B2，参见附图1e，在现有技术5中，其锚定件结构受力时两个支撑点与承口管壁接触，且接触形式为点与面的接触，当管壁内压力增大时，锚定件无法转动，锚定件的齿部会继续扎入管壁，导致管壁破裂，接口发生渗水等现象。
除以上所列举的专利外，现有技术中还存在其他形式的具有锚定结构的承插式管道接口，其共有的特点是：当插口与承口发生相对运动时，承口与锚定件的支撑位置会发生变化，这种结构的缺陷为：
(1)不利于提高锚定的可靠性。支撑位置变化的过程中出现锚定件多点支撑的情况，在这种情况下，管壁和锚定件受剪切力的影响，容易引起管壁扎裂或锚定物断裂等现象。
(2)不利于延长结构的寿命。由于锚定件的支撑区域不固定，当地基发生振动时，容易出现支撑区域更替，产生交变的支撑力，交变力的存在容易引起局部材料疲劳失效，缩短了结构寿命。
(3)不利于降低管道维护成本。密封管道由于锚定物断裂或局部材料失效，极易发生泄漏，导致需要修补或更换，造成维护成本的上升。
(4)不利于进行结构优化仿真。支撑位置的变化取决于插口和承口的相对运动，而二者的相对运动又取决于地基等外部环境，因此外部环境的不可预测性导致支撑位置的不确定，进而导致设计阶段对于管壁的数值模拟与真实情况相差很大，不利于具有锚定结构的承插式管道接口整体结构的设计优化，从而影响了整体性能的提升，为优化设计带来不便。
(5)不利于增大管道运输能力。管径的大小决定了管道结构的运输能力，受限于其多处支撑导致的受力不稳、仿真难以实现等原因，为了保证结构的可靠性、稳定性、安全性和寿命，管径尺寸一直难以显著提升，目前市场上常见的锚定结构的承插式管道接口的管径仅仅为DN200及以下规格，很大程度上限制了管道的运输能力。
发明内容
本发明要解决的技术问题是提供一种具有锚定结构的承插式管道接口，其能提高锚定的可靠性、延长结构的寿命、降低管道维护成本、使接口结构的优化仿真容易进行、增大管道运输能力。
本发明具有锚定结构的承插式管道接口，包括承口、插口、在所述承口和所述插口之间的用于密封和锁定管道接口的密封件；所述承口包括由第一环形竖壁、锥形壁、圆柱形内壁和第二环形竖壁依次连接界定的环形沟槽；所述密封件包括弹性材料环和嵌入其中的多个锚定件；所述锚定件包括头部和多个啮合齿；所述锚定件上设置有旋转圆心，所述头部与环形沟槽相抵接的部分为圆弧支撑面，所述圆弧支撑面为凸面；所述圆弧支撑面与环形沟槽的抵接区域位于第一环形竖壁和锥形壁的交接处。
本发明具有锚定结构的承插式管道接口，其中所述圆弧支撑面与第一环形竖壁和锥形壁均相切。
本发明具有锚定结构的承插式管道接口，其中所述第一环形竖壁与所述锥形壁之间形成的角度为130°～145°。
本发明具有锚定结构的承插式管道接口，其中所述第一环形竖壁与所述锥形壁之间形成的角度为138°。
本发明具有锚定结构的承插式管道接口，其中所述锚定件还包括设置在所述圆弧形支撑面对侧的凹面。
本发明具有锚定结构的承插式管道接口，其中所述凹面的表面平滑。
本发明具有锚定结构的承插式管道接口，锚定后，所述锚定件至少有两个啮合齿嵌入插口的管壁。
本发明具有锚定结构的承插式管道接口，其中所述啮合齿的数量为3至5个。
本发明具有锚定结构的承插式管道接口，其中所述啮合齿的数量为3个。
本发明具有锚定结构的承插式管道接口，在锚定件的中心纵剖面中，所述圆弧支撑面通过直线或近似直线的平滑线连接第一啮合齿齿尖，所述第一啮合齿是距离第一环形竖壁最近的啮合齿。
本发明具有锚定结构的承插式管道接口，在锚定件的中心纵剖面中，所述凹面通过外凸的折线连接最后一个啮合齿齿尖，所述最后一个啮合齿是距离第一环形竖壁最远的啮合齿。
本发明具有锚定结构的承插式管道接口，其中所述锚定件的齿高度差设定为0.2～0.8mm，所述齿高度差是指中间啮合齿齿尖到第一啮合齿齿尖与最后一个啮合齿齿尖之间连线的垂直距离。
本发明具有锚定结构的承插式管道接口，其中所述啮合齿嵌入插口管壁的深度为0.5～1.5mm。
本发明具有锚定结构的承插式管道接口，其中所述多个锚定件呈环形等间距地嵌入弹性材料环。
本发明具有锚定结构的承插式管道接口，其中所述多个锚定件呈环形不等间距地嵌入弹 性材料环。
本发明具有锚定结构的承插式管道接口，其中所述最后一个啮合齿的初始角度E设定为55°～59°。
本发明具有锚定结构的承插式管道接口，其中所述锚定件为一体式结构。
本发明具有锚定结构的承插式管道接口，其中所述弹性材料环包括嵌入环形沟槽中的密封支撑部分，所述锚定件受到所述密封支撑部分的支撑，所述头部和啮合齿位于所述密封支撑部分之外。
本发明具有锚定结构的承插式管道接口，其中所述弹性材料环包覆锚定件的环周部分的硬度大于弹性材料环其他部分的硬度。
本发明具有锚定结构的承插式管道接口，其中所述密封件包括密封尾部，所述密封尾部的结构为内唇和外唇形成的双唇结构，所述外唇与承口贴合，所述内唇与插口贴合。
本发明具有锚定结构的承插式管道接口，其中所述密封件包括密封尾部，所述密封尾部为球头结构、直线结构、折线结构或半圆弧结构，密封尾部分别与承口和插口贴合。
本发明具有锚定结构的承插式管道接口，其中所述第一环形竖壁与承口轴线的夹角为85°～88°，所述第二环形竖壁与承口轴线的夹角为80°～84°。
本发明具有锚定结构的承插式管道接口，其中承口的材质为球墨铸铁。
本发明具有锚定结构的承插式管道接口，其中管径为DN80～DN600。
与现有技术相比，本发明具有以下优点：
(1)提高锚定可靠性。本发明中单个锚定件主体主要受压力，锚定件绕支撑部位的旋转圆心旋转，当内部介质压力增大时，无论承口与插口在何种尺寸公差设计范围内配合，或接口在这些配合时发生偏转，锚定件可以随着旋转圆心旋转，锚定件特定的结构设计与承插口之间的配合可以确保至少两个啮合齿受力，减小了剪切力，因此可以减少啮合齿断裂及扎裂管壁的问题，避免引起管道泄漏，并且避免锚定件受力角度过大而扎入管壁过深，或受力角度过小而导致插口滑脱，提高了锚定的可靠性。
(2)延长结构寿命。锚定件在承口内壁有确定的支撑位置，且支撑位置上的接触点都在同一圆弧上，有唯一旋转点，该唯一旋转点是由支撑位置的接触点及锚定件头部圆弧尺寸确定，当承插口在不同间隙之间配合、地基发生沉降导致接口发生相对运动及偏转时，锚定件可以绕唯一旋转点进行旋转，随着锚定件的旋转，受力角度会随着不同啮合齿的扎入而调节，保证啮合齿的受力角度在设计的可控范围之内，整体结构不会受到交变力的作用，确保插口管壁安全且锚固效果良好。
(3)降低管道维护成本。由于密封管道不易发生锚定物断裂或局部材料失效，因此不易发生泄漏，避免了管道修补或更换，降低了维护成本。
(4)容易进行结构优化。本申请技术方案中锚定件支撑位置的确定性，决定了对接口结构进行计算机仿真时仿真结果与实际工况出入不大，有利于对接口结构进行计算机辅助设计优化，有利于从设计阶段进行接口性能的优化仿真。
(5)增大管道运输能力。本发明的接口结构可靠性、稳定性、安全性和接口寿命都有显著提升，进而管径尺寸可设计的更大，增大了管道的运输能力。
本发明具有锚定结构的承插式管道接口，适用于更多规格承插口之间的配合。根据不同的需要，设置了密封圈的双唇、直线、折线、圆弧、球头等尾部结构，适应不同的工况，提高了密封性能。将密封件设置为非均一材质，主要起支撑作用部分的硬度大于起密封作用部分的硬度，使流体压力的变化对密封件不同部位造成的位移量相对均匀，避免了位移量不同造成的缝隙，进一步提高了密封性能；本发明具有锚定结构的承插式管道接口，最大管径达到DN600，大大提升了管道的运输能力，提高了运输效率。
下面结合附图对本发明的具有锚定结构的承插式管道接口作进一步说明。
附图说明
图1a为现有技术1的结构示意图；
图1b为现有技术2的结构示意图；
图1c为现有技术3的结构示意图；
图1d为现有技术4的结构示意图；
图1e为现有技术5的结构示意图；
图2为本发明具有锚定结构的承插式管道接口的结构示意图；
图3为本发明中密封件的立体结构示意图；
图4为本发明中密封件的剖面示意图；
图5为本发明中锚定件的示意图；
图6a、图6b、图6c为无偏转接口锚定件在承、插口制造公差范围内嵌入管壁示意图；
图7a、图7b、图7c为偏转接口锚定件在承、插口制造公差范围内嵌入管壁示意图；
图8a为本发明的密封尾部为双唇结构的示意图；
图8b为本发明的密封尾部为球头结构的示意图；
图8c为本发明的密封尾部为直线结构的示意图；
图8d为本发明的密封尾部为折线结构的示意图；
图8e为本发明的密封尾部为半圆弧结构的示意图。
具体实施方式
结合图2-5所示，本发明具有锚定结构的承插式管道接口包括承口67、插口66、在承口67和插口66之间的用于密封和锁定管道接口的密封件65，其中承口67与插口66分别属于两个管，两个管通过承口和插口插入式对接。
承口67包括由第一环形竖壁1、锥形壁2、圆柱形内壁3和第二环形竖壁4依次连接界定的环形沟槽5，环形沟槽5用于支撑密封件65，密封件65包括弹性材料环69和嵌入其中的多个锚定件68，多个锚定件68可呈环形、等间距地嵌入弹性材料环69，当然，多个锚定件68也可呈环形、不等间距地嵌入弹性材料环69。多个锚定件68均为一体式结构。
当承口67与插口66在外力作用下产生相对分离趋势时，密封件65中的锚定件68会受到来自插口66的作用力、偏离安装位置，环形沟槽5用于支撑密封件65，即在承口67与插口66连接过程中防止密封件65偏离安装位置。环形沟槽需要根据铸管制造工艺、密封件65安装需要、密封件65中锚定件68的受力情况及接头规格尺寸综合考虑进行具体设计。
锚定件68包括适合于插入环形沟槽5中的头部51和适合插入插口66的多个啮合齿54，还包括设置在圆弧形支撑面50对侧的凹面52，凹面52的表面平滑。锚定件68上设置有旋转圆心55，头部51与环形沟槽5相抵接的部分为圆弧支撑面50，圆弧支撑面50为凸面，圆弧支撑面50与环形沟槽的抵接区域位于第一环形竖壁1和锥形壁2的交接处，在承口67和插口66发生偏转过程中，锚定件68以旋转圆心55进行旋转。
再如图2所示，圆弧支撑面50与第一环形竖壁1和锥形壁2均相切。
第一环形竖壁1与锥形壁2之间形成的角度为130°～145°，优选138°。啮合齿54的数量为3至5个，优选3个。
锚定后，锚定件68至少有两个啮合齿54嵌入插口66的管壁，啮合齿54嵌入插口66管壁的深度为0.5～1.5mm。
在锚定件68的中心纵剖面中，圆弧支撑面50通过直线或近似直线的平滑线连接第一啮合齿齿尖，第一啮合齿是距离第一环形竖壁1最近的啮合齿54；在锚定件68的中心纵剖面中，凹面52通过外凸的折线连接最后一个啮合齿54齿尖，最后一个啮合齿54是距离第一环形竖壁1最远的啮合齿54；锚定件68的齿高度差设定为0.2～0.8mm，齿高度差是指中间啮合齿54齿尖到第一啮合齿54齿尖与最后一个啮合齿54齿尖之间连线的垂直距离。
最后一个啮合齿54的初始角度E设定为55°～59°，初始角度E是指最后一个啮合齿54齿尖与旋转圆心55的连线与轴向水平线的夹角。第一环形竖壁1与承口轴线的夹角为85°～88°，第二环形竖壁4与承口轴线的夹角为80°～84°。
弹性材料环69包括嵌入环形沟槽5中的密封支撑部分60和密封部分61，锚定件68受到密封支撑部分60的支撑，头部51和啮合齿54位于密封支撑部分60之外。密封支撑部分 60用于固定锚定件68、支撑密封部分61、防止在安装过程中密封件65偏离、接口安装后作用于锚定一定的径向力保证锚定件与插口合适接触啮合；弹性材料环69包覆锚定件的环周部分的硬度大于弹性材料环69其他部分的硬度。
密封件65包括密封尾部62，密封尾部62的结构为内唇63和外唇64形成的双唇结构，外唇64与承口67贴合，内唇63与插口66贴合；密封尾部62优选双唇结构，以承受较大的水压。
密封尾部62还可为球头结构、直线结构、折线结构或半圆弧结构，密封尾部62分别与承口67和插口66贴合。
锚定件68绕旋转圆心55旋转过程中，至少两个啮合齿54嵌入插口66的管壁，当轴向水压力变大时，分摊到每个齿的力就会减小，提高了锚定压力等级，同时保证接口在地基沉降发生偏转时，依然可以牢牢抱住插口66，防止发生滑脱。锚定件68的齿高度差设定为0.2～0.8mm。，啮合齿54扎入插口66的深度在0.5～1.5mm之间。锚定件68的第三个啮合齿(离圆弧支撑面50最远的齿)齿尖与支撑部位的圆心连线与轴向水平线的夹角为E，初始角度E设定为55°～59°。选择以上这些具体的尺寸，可以使啮合齿54较好的与插口66配合，不至于破坏管壁，也能有很好的锚定效果。初始角度E的设定可保证密封面的长度，使密封效果更好。
锚定件68的凹面52，用于改善锚定件68在密封件65中的固定可靠性，为固定锚定件68的密封件65的密封支撑60留有足够的变形空间。
再如图5所示，锚定件68的截面形状和圆弧支撑面50与承口67中的第一环形壁1与锥形壁2相交形成的角度相匹配。锚定件68上加工基准线53为啮合齿54尖端部位在锚定件68中分布位置线，适应铸管承口67和插口66的尺寸公差及在允许偏转范围内的要求。保证在各种尺寸公差及偏转条件下，至少有两个啮合齿起到要求的锚定作用。
如图6a所示，当承口的密封面与插口外径的尺寸公差取中间数值，且接口无偏转时，锚定件的圆形支撑面50与承口的环形壁1和锥形壁2相切，均匀受力，锚定件的三个啮合齿都扎入插口的管壁，其中中间啮合齿扎入深度为1.0～1.5mm之间，两边啮合齿扎入深度为0.5～0.7mm之间；如图6b所示，当承口的密封面尺寸公差取下限值，插口的外径尺寸公差取上限值，且接口无偏转时，锚定件的第一个啮合齿(离圆形支撑面50最近的齿)和中间啮合齿扎入插口的管壁，扎入深度为0.7～1.2mm之间；如图6c所示，当承口的密封面尺寸公差取上限值时，插口的外径尺寸公差取下限值，且接口无偏转时，锚定件的中间啮合齿和第三个啮合齿(离圆形支撑面50最远的齿)扎入插口的管壁，扎入深度为0.7～1.2mm之间。
如图7a、7b、7c所示，当承口的密封面与插口外径的尺寸公差分别取不同极限值，且接口产生偏转时，锚定件也可以确保两个啮合齿扎入插口的管壁，扎入深度为0.7～1.2mm之间。
参见图8a，密封件65左侧环周部分(该部分包覆锚定件68)的硬度相对于密封件65右侧部分的硬度要大，这种结构的密封件65左侧起支撑作用的部分硬度大，右侧起密封作用的部分弹性大。由于锚定件68是分布在密封件65中的(参见图3)，因此在管内流体压力作用下，密封件65受到挤压发生变形，包含锚定件68的区域由于啮合齿扎入管壁而阻碍密封件65的变形，不包含锚定件的区域由于其左侧支撑部分硬度较大，因此一定程度上使得密封件65上包含锚定件区域和不包含锚定件区域的变形相对均匀，避免了密封件在流体压力变化剧烈时，周向变形不均而导致泄露问题。另外，当接口发生偏转或发生相对位移时，硬度大能够提供更好的支撑，减小锚定件对管壁的剪切力，更好的保护锚定件的啮合齿和管壁。
如图8b和图8c所示，密封尾部分别设计为球头或直线型，当地基发生沉降导致接口偏转时，拔脱位移较小的偏转一侧密封空间就会变大，使用该密封方案设计可以在接口偏转时，增大密封件的填充性，避免管内流体泄露。
如图8d所示，密封尾部为折线结构，折线结构由于具有V型槽，因此允许两侧的密封部位产生相对较大的变形，当插口插入承口时，阻力较小，易于插口端的插入。
如图8e所示，密封尾部为半圆弧型结构，管内流体压力升高时，力作用在半圆弧上，密封位置容易张开，增强密封性能，避免管道泄漏。
以上所述的实施例仅仅是对本发明的优选实施方式进行描述，并非对本发明的范围进行限定，在不脱离本发明设计精神的前提下，本领域普通技术人员对本发明的技术方案作出的各种变形和改进，均应落入本发明权利要求书确定的保护范围内。
工业实用性
本发明具有锚定结构的承插式管道接口在输水输气领域具有重大影响。本发明具有锚定结构的承插式管道接口与背景技术相比，锚定可靠性显著提高、寿命明显延长、管道维护成本大大降低、管道运输能力大大提高。本发明具有锚定结构的承插式管道接口具有很强的工业实用性和可操作性，对管线运输意义重大。

Claims (24)

  1. 一种具有锚定结构的承插式管道接口，其特征在于：包括承口(67)、插口(66)、在所述承口(67)和所述插口(66)之间的用于密封和锁定管道接口的密封件(65)；所述承口(67)包括由第一环形竖壁(1)、锥形壁(2)、圆柱形内壁(3)和第二环形竖壁(4)依次连接界定的环形沟槽(5)；所述密封件(65)包括弹性材料环(69)和嵌入其中的多个锚定件(68)；所述锚定件(68)包括头部(51)和多个啮合齿(54)；其特征在于：所述锚定件(68)上设置有旋转圆心(55)，所述头部(51)与环形沟槽(5)相抵接的部分为圆弧支撑面(50)，所述圆弧支撑面(50)为凸面；所述圆弧支撑面(50)与环形沟槽的抵接区域位于第一环形竖壁(1)和锥形壁(2)的交接处。
  2. 根据权利要求1所述的具有锚定结构的承插式管道接口，其特征在于：所述圆弧支撑面(50)与第一环形竖壁(1)和锥形壁(2)均相切。
  3. 根据权利要求2所述的具有锚定结构的承插式管道接口，其特征在于：所述第一环形竖壁(1)与所述锥形壁(2)之间形成的角度为130°～145°。
  4. 根据权利要求3所述的具有锚定结构的承插式管道接口，其特征在于：所述第一环形竖壁(1)与所述锥形壁(2)之间形成的角度为138°。
  5. 根据权利要求1所述的具有锚定结构的承插式管道接口，其特征在于：所述锚定件(68)还包括设置在所述圆弧形支撑面(50)对侧的凹面(52)。
  6. 根据权利要求5所述的具有锚定结构的承插式管道接口，其特征在于：所述凹面(52)的表面平滑。
  7. 根据权利要求1所述的具有锚定结构的承插式管道接口，其特征在于：锚定后，所述锚定件(68)至少有两个啮合齿(54)嵌入插口(66)的管壁。
  8. 根据权利要求7所述的具有锚定结构的承插式管道接口，其特征在于：所述啮合齿(54)的数量为3至5个。
  9. 根据权利要求8所述的具有锚定结构的承插式管道接口，其特征在于：所述啮合齿(54)的数量为3个。
  10. 根据权利要求9所述的具有锚定结构的承插式管道接口，其特征在于：在锚定件(68)的中心纵剖面中，所述圆弧支撑面(50)通过直线或近似直线的平滑线连接第一啮合齿齿尖，所述第一啮合齿是距离第一环形竖壁(1)最近的啮合齿。
  11. 根据权利要求10所述的具有锚定结构的承插式管道接口，其特征在于：在锚定件(68)的中心纵剖面中，所述凹面(52)通过外凸的折线连接最后一个啮合齿齿尖，所述最后一个 啮合齿是距离第一环形竖壁(1)最远的啮合齿。
  12. 根据权利要求11所述的具有锚定结构的承插式管道接口，其特征在于：所述锚定件(68)的齿高度差设定为0.2～0.8mm，所述齿高度差是指中间啮合齿齿尖到第一啮合齿齿尖与最后一个啮合齿齿尖之间连线的垂直距离。
  13. 根据权利要求7所述的具有锚定结构的承插式管道接口，其特征在于：所述啮合齿(54)嵌入插口(66)管壁的深度为0.5～1.5mm。
  14. 根据权利要求1至6中任一项所述的具有锚定结构的承插式管道接口，其特征在于：所述多个锚定件(68)呈环形等间距地嵌入弹性材料环(69)。
  15. 根据权利要求1至6中任一项所述的具有锚定结构的承插式管道接口，其特征在于：所述多个锚定件(68)呈环形不等间距地嵌入弹性材料环(69)。
  16. 根据权利要求12所述的具有锚定结构的承插式管道接口，其特征在于：所述最后一个啮合齿的初始角度E设定为55°～59°。
  17. 根据权利要求1至6中任一项所述的具有锚定结构的承插式管道接口，其特征在于：所述锚定件(68)为一体式结构。
  18. 根据权利要求1所述的具有锚定结构的承插式管道接口，其特征在于：所述弹性材料环(69)包括嵌入环形沟槽(5)中的密封支撑部分(60)，所述锚定件(68)受到所述密封支撑部分(60)的支撑，所述头部(51)和啮合齿(54)位于所述密封支撑部分(60)之外。
  19. 根据权利要求1所述的具有锚定结构的承插式管道接口，其特征在于：所述弹性材料环(69)包覆锚定件的环周部分的硬度大于弹性材料环(69)其他部分的硬度。
  20. 根据权利要求1至6中任一项所述的具有锚定结构的承插管道接口，其特征在于：所述密封件(65)包括密封尾部(62)，所述密封尾部(62)的结构为内唇(63)和外唇(64)形成的双唇结构，所述外唇(64)与承口(67)贴合，所述内唇(63)与插口(66)贴合。
  21. 根据权利要求1至6中任一项所述的具有锚定结构的承插式管道接口，其特征在于：所述密封件(65)包括密封尾部(62)，所述密封尾部(62)为球头结构、直线结构、折线结构或半圆弧结构，密封尾部(62)分别与承口(67)和插口(66)贴合。
  22. 根据权利要求21所述的具有锚定结构的承插式管道接口，其特征在于：所述第一环形竖壁(1)与承口轴线的夹角为85°～88°，所述第二环形竖壁(4)与承口轴线的夹角为80°～84°。
  23. 根据权利要求1所述的具有锚定结构的承插式管道接口，其特征在于：所述承口的材质为球墨铸铁。
  24. 根据权利要求1所述的具有锚定结构的承插式管道接口，其特征在于：管径为DN80～DN600。
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