WO2015070648A1 - 一种具有锚定功能的承插式管道接口、安装方法及安装卡 - Google Patents

一种具有锚定功能的承插式管道接口、安装方法及安装卡 Download PDF

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Publication number
WO2015070648A1
WO2015070648A1 PCT/CN2014/083867 CN2014083867W WO2015070648A1 WO 2015070648 A1 WO2015070648 A1 WO 2015070648A1 CN 2014083867 W CN2014083867 W CN 2014083867W WO 2015070648 A1 WO2015070648 A1 WO 2015070648A1
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WO
WIPO (PCT)
Prior art keywords
socket
block
retaining ring
install
stopper
Prior art date
Application number
PCT/CN2014/083867
Other languages
English (en)
French (fr)
Inventor
李军
徐军
申勇
刘俊锋
刘延学
李海顺
张永杰
郭红星
Original Assignee
新兴铸管股份有限公司
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 新兴铸管股份有限公司 filed Critical 新兴铸管股份有限公司
Publication of WO2015070648A1 publication Critical patent/WO2015070648A1/zh

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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
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/092—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
    • 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
    • F16L21/002—Sleeves or nipples for pipes of the same diameter; Reduction pieces
    • 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
    • F16L37/00—Couplings of the quick-acting type
    • F16L37/08—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members
    • F16L37/084—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking
    • F16L37/092—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector
    • F16L37/0927—Couplings of the quick-acting type in which the connection between abutting or axially overlapping ends is maintained by locking members combined with automatic locking by means of elements wedged between the pipe and the frusto-conical surface of the body of the connector the wedge element being axially displaceable for releasing the coupling
    • 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
    • F16L21/08—Joints with sleeve or socket with additional locking means

Definitions

  • the invention relates to a socket type pipe joint structure, in particular to a socket type pipe joint structure of an anchor structure formed by a split type block for a ductile iron pipe.
  • the socket-type pipe interface with the anchor structure of the split type block has simple structure and convenient installation, and has wide application in the fields of municipal engineering, oil transportation and gas transmission.
  • the socket-type pipe interface with the anchor structure as the stopper is favored by the majority of users because of convenient construction and easy to fall off.
  • the interface generally includes a socket and a socket, and a protrusion is arranged on the socket. After the socket is inserted into the socket, a stopper is inserted from the stopper mounting hole, and the socket is anchored in the socket through the stopper to prevent the socket and the socket. The connection is disconnected.
  • the stopper is an important guarantee for the reliability of the interface connection. Once the stopper is detached, the interface connection performance is impaired, and the socket may be detached from the socket. Therefore, how to ensure that the stopper does not fall off during the installation and use of the interface is an important technical problem that is of concern to those skilled in the art.
  • FIG. 1a and FIG. 1b show a conventional socket type pipe joint.
  • the end of the socket 111 has an annular wall 113 extending radially inwardly, and a stopper mounting groove 114 is formed in the annular wall 113.
  • the socket 110 is provided with a protrusion 117, the anchoring element is a stopper 115, and the stopper 115 is provided with a non-slip protrusion 116.
  • the socket 110 is inserted into the socket 111, and the non-slip protrusion 116 on the block 115 is inserted into the block mounting groove 114, and the block 115 is circumferentially rotated along the pipe of the socket 110 to prevent the anti-skid on the block 115.
  • the 116 is placed behind the annular wall 113 and the next block 115 is then mounted.
  • the retaining block 115 is tightened to the outer wall of the socket 110 by a steel band 112 or other locking material.
  • the projection 117 on the socket 110 acts on the right end surface of the stopper 115, and the anti-slip projection 116 on the stopper 115 acts on the axial direction of the annular wall 113 of the socket 111.
  • the bevel 118 prevents the socket 110 from slipping off.
  • the step of fixing the stopper is cumbersome, and it is required to be bundled with a steel strip after the stopper is installed, thereby increasing the installation step; meanwhile, since the socket moves in the axial direction under the action of an external force, multiple axial movements are likely to be caused.
  • the steel strip of the fixed block is loose or even broken; and other locking materials such as steel strip are directly in contact with the external environment, which is easily affected by environmental impact corrosion, loses the locking function, and causes the stopper to fall off.
  • the cost of using the steel strip is relatively low. high.
  • FIG. 2a-2c Another common socketed pipe joint is disclosed in the patent document US Pat. No. 4,685,708 A.
  • the stop 30' is arcuate and the stop 30' is connected by a pin 34' to form an annular retaining ring 24'.
  • Plates 36' and 38' of adjustment means 26' are respectively provided on the opposite ends 30c' of one of the stops 30' and the opposite ends of the other stop 30', which are assembled by the connecting plates 36' and 38'
  • the retaining ring 24' is placed in the stop block 22' such that the inner diameter of the retaining ring 24' is greater than the outer diameter of the weld ring 28' on the socket 10' to allow the weld ring 28' to smoothly pass over the retaining ring 24'.
  • the distance between the two end portions 30c' and 30d' is adjusted by the adjusting device 26' to fix the retaining ring 24' to the outer surface of the socket 10' to prevent the socket 10' from bearing.
  • the mouth 12' falls off.
  • the socket type pipe joint does not use the steel strip of the fixed stop 30', but the block 30' needs to be connected by the pin 34', and the adjusting device 26' is used to fix the retaining ring 24', and the adjusting device 26' Not only need to be connected with the stopper 30', but also the bolt 42', the base 40', 44' and the nut 46' are provided.
  • the adjusting device 26' of the fixed retaining ring is in the external environment and is also susceptible to environmental corrosion, which causes the interface to lose its self-locking function.
  • the applicant's patent document CN102297297A discloses a socket type pipe joint having an anchor structure, as shown in Figs. 3a and 3b, two sets of anti-slip protrusions are arranged on the block 5', and each set of anti-slip protrusions is arranged. There are two anti-skid debounces 6', and a fixing hole 1 is arranged on the stopper 5' between the two non-slip projections 6', and the rubber block 12' is fixedly mounted on the stopper 5'.
  • the rubber block 12' When the stopper 5' is mounted between the socket and the socket 10', the rubber block 12' is pressed by the inner surface of the socket to deform the rubber block 12', and the force generated by the compression deformation of the rubber block 12' causes the stopper 12 'Close to the outer surface of the socket 10' to prevent the activity from falling off.
  • the socket type pipe joint does not need to fix the steel strip of the block, and at the same time, the rubber block is completely hidden in the space between the socket and the socket, and is not in contact with the external environment, thereby avoiding accidental scratching during the installation process, and at the same time, It also avoids corrosion of the external environment and greatly extends its service life.
  • the above-mentioned socket type pipe interface also has certain defects.
  • the structure of the block and the rubber block is complicated and the manufacturing is complicated; at the same time, the socket is not a complete ring structure, and the stopper mounting opening existing thereon is necessarily reduced.
  • the strength of the socket which restricts the application of this type of socket structure.
  • the center of the retaining ring should be located as far as possible on the axis of the tube, and the sockets should be mounted in the coaxial direction.
  • a type of interface in which the retaining ring is first installed in the block bin and then the socket is mounted to the socket is also a typical problem after the retaining ring is installed in the block bin, possibly Due to the action of gravity, the retaining ring slides down to the lower rear of the block, so that its center is offset from the axis of the tube, which makes the socket difficult to install.
  • the present invention provides a socket type pipe interface with an anchoring function, which has a simple structure and convenient installation, can effectively prevent the block from slipping, and has a firm and reliable connection.
  • the present invention also provides a Installation method and installation card of a socket type pipe joint with anchor function.
  • the invention provides a socket type pipe joint with an anchoring function, comprising a socket, a socket and a retaining ring, wherein the end of the socket extends radially inward to form a complete annular wall portion, and the end of the socket a socket protrusion is provided,
  • the retaining ring is a split structure, and includes a plurality of blocks and a plurality of rubber supporting blocks; a fixing hole is disposed on the block, the fixing hole is fixedly mounted with the rubber supporting block, the rubber
  • the total height of the support block and the block is equal to or slightly larger than the difference between the inner diameter of the socket and the outer diameter of the socket;
  • the socket type pipe joint having an anchor function, wherein the block has an arc-shaped rod body, and A guiding bevel is formed radially inwardly at the outward end, and a groove is provided on the arcuate rod of the stopper, the fixing hole being disposed at the bottom of the groove.
  • the retaining ring is a split structure, it is composed of a plurality of stoppers, and the blocks do not need to be connected together by the connecting member, and therefore, the stopper has a simple structure.
  • the fixed stop is a rubber support block, and the rubber support block is fixed to the block. After the block is placed, it is placed in the block bin together with the stopper. Therefore, the rubber support block is between the socket and the socket, and does not come into contact with the outside, preventing the rubber support block from being scratched during the installation, and also avoiding the rubber.
  • the support block is corroded by the external environment, extending the service life.
  • the stopper is first installed in the stopper chamber, and then the socket is inserted into the socket. Therefore, it is not necessary to open the stopper mounting groove on the annular wall extending radially inward of the end portion of the socket, and the annular wall is A complete wall enhances the strength of the interface connection.
  • the diameter of the retaining ring is smaller than that of the stop block. Therefore, when the retaining ring is placed in the block bin, the retaining ring falls on the lower part of the block bin, around the block bin, without the rubber support block installed. Separating, thus losing the force that gathers the stops that make up the retaining ring, the block that constitutes the retaining ring is easy to fall off or the center of the retaining ring is off-center, which makes the socket difficult to install, and even the socket cannot be installed into the socket.
  • the rubber support block After the rubber support block is mounted on the block, the rubber support block has elasticity. When the retaining ring is placed in the block block, the rubber support block acts between the inner wall of the block block and the block, and the retaining ring is fixed and given. The force that the stoppers gather together, therefore, the stopper will not be scattered, and the structure and shape of the retaining ring are ensured to be good, and the socket is convenient to be installed.
  • the invention provides a socket type pipe joint with an anchoring function, wherein the sum of the arc lengths of the plurality of blocks is equal to or slightly smaller than the circumference of the socket.
  • the invention relates to a socket type pipe joint with an anchoring function, wherein the rubber support block has a columnar base body, and an annular protrusion is formed on the columnar base body, and the columnar base part of the lower part of the annular protrusion is adapted to the fixing hole .
  • the rubber support block is columnar, and the columnar base body is formed with an annular protrusion, and the lower part of the annular protrusion is a fixed column.
  • the fixing portion of the rubber support block is inserted and fixed to the block fixing hole, the lower part of the annular protrusion
  • the rubber support block is only a columnar body with an annular projection thereon, which is simple in structure and easy to manufacture.
  • the stopper of the present invention can be selected as two or three. Two or three pieces are selected to facilitate the installation of the block in the block bin, forming a complete shape of the retaining ring, and the blocks are pressed against each other, and the retaining ring can be temporarily Keep steady.
  • the present invention also provides a method for installing a socket type pipe interface with an anchor function, which specifically includes the following installation steps:
  • the retaining ring will be pushed upward and backward to move the rubber supporting block on the retaining ring, and the socket protruding along the guiding inclined surface passes through the retaining ring, and then the socket is slightly pulled outward.
  • the stopper will be pressed against the outer surface of the socket by the rubber support block to function as an anchoring interface.
  • the installation method can be used to improve the installation efficiency, which includes the following steps:
  • the present invention provides An auxiliary mounting card having an overall U-shaped configuration, wherein the lower piece portion is slightly longer than the upper piece portion, and the connecting portion vertically connects the upper and lower piece portions.
  • the mounting card abuts the wall of the socket end, the upper portion is on the wall, the lower portion is below the wall, and finally the attachment portion is attached to the wall of the socket end.
  • the lower piece is located between any two blocks, and the auxiliary split type block forms an integral retaining ring with an enlarged inner diameter, so that the socket can be easily inserted into the socket.
  • the socket type pipe joint with anchor structure provided by the invention has the advantages of simple structure, convenient installation, quick installation, strong anti-slip capability and good effect by fixing the rubber block fixing block.
  • Figure la is a cross-sectional view of a prior art socketed pipe interface
  • Figure lb is a left side view of a prior art socketed pipe interface
  • Figure 2a is a perspective view of a prior art retaining ring
  • Figure 2b is a perspective view of a prior art retaining ring adjusting device
  • Figure 2c is a cross-sectional view of a prior art socket mounting
  • Figure 3a is a front cross-sectional view of a socketed pipe joint in the prior art
  • Figure 3b is a perspective view of a prior art stop
  • Figure 4 is a partial cross-sectional view of the socket type pipe joint with anchoring function of the present invention.
  • FIG. 5 is an enlarged schematic view showing a partial structure of a socket type pipe joint having an anchoring function according to the present invention
  • FIG. 6a is a structural view of a socket type pipe joint retaining ring having an anchoring function according to the present invention
  • Figure 6b is a cross-sectional view taken along line B-B of Figure 6a;
  • Figure 7 is a perspective view of a rubber support block in a socket type pipe joint having an anchoring function according to the present invention
  • FIG. 8a is a structural view of the socket type pipe joint retaining ring with anchoring function inserted into the rubber support block according to the present invention
  • Figure 8b is a cross-sectional view taken along line AA of Figure 8a;
  • FIG. 9a is a structural view of a socket when a socket type pipe interface mounting card having an anchoring function is installed in position;
  • FIG. 9b is a cross-sectional view taken along line A-A of FIG. 9a;
  • FIG. 10 is a perspective view showing a positional relationship between a mounting card and a retaining ring in a socket-type pipe joint having an anchoring function according to the present invention
  • FIG. 11 is a socket of the socket-type pipe joint having an anchoring function according to the present invention
  • Figure 12 is a perspective view of the mounting card of the present invention. detailed description
  • one end of the pipe is the socket 9 and the other end is the socket 8, and the end of the socket 9 has a radially inward end.
  • An annular wall 6 is formed, the mounting wall of the annular wall 6 is not provided with a mounting hole for the stopper 1 to be a complete wall portion, and the socket 8 has a socket protrusion 81.
  • the inner surface of the socket 9 is provided with a placing block 1 Stop block 7.
  • the retaining ring 2 is a split structure comprising three blocks of the same structure.
  • the three blocks can form a ring-shaped whole body, that is, the retaining ring 2.
  • the number of the stoppers 1 can be set according to specific needs, and the selection of the three stoppers is the best embodiment for forming the retaining ring 2, in which case the stopper 1 is relatively easy to install into the stopper chamber 7, and Temporarily forming a relatively stable retaining ring assembly, the blocks need not be fixed together.
  • the stopper 1 is an arc-shaped rod-shaped body, and a guiding slope 11 is formed radially inward at an outward end portion, and two grooves 3 are provided on the stopper 1 along the curved surface, and the bottom of the groove 3 and the retaining ring
  • the axes of 2 are substantially parallel, and a fixing hole 4 for fixing the rubber support block 5 is provided on the bottom of the groove 3.
  • the rubber support block 5 has a columnar base 51, and an annular projection 52 is formed on the columnar base 51, and a portion of the columnar base 51 at the lower portion of the annular projection 52 is a fixing post 53, the fixing The shape and size of the column 53 are adapted to the shape and size of the fixing hole 4 provided on the outer diameter surface of the stopper. After the fixing post 53 of the rubber support block 5 is inserted into the stopper fixing hole 4, the lower end surface of the annular projection 52 is in close contact with the groove bottom surface on the groove 3, and therefore, the annular projection 52 The contact area between the rubber support block 5 and the groove bottom of the groove 3 is increased.
  • the annular projection 52 prevents the rubber support block 5 from being destabilized by pressure and is overturned.
  • the state after the rubber support block 5 is fixed to the stopper 1 is as shown in Figs. 8a and 8b.
  • the rubber support block 5 applies a radially inward force to the stopper 1 so that the stopper 1 is tightly attached to the outer surface of the socket 8.
  • the provision of the rubber support block 5 has the effect of assisting the positioning of the retaining ring 2 to the center of the heart, and the process of mounting the socket 8 to the socket 9 becomes easier.
  • the retaining ring is not provided with a support such as the rubber support block 5, so that when a complete or a plurality of stops are combined in some manner, the retaining ring is integrally placed to the retainer stop 7 After gravity, in gravity Underneath, the center of the retaining ring is bound to be lower than the axis of the tube, so that the tolerance is further enlarged. When the tolerance is large to a certain extent, the socket will not be easily inserted into the socket, and the socket protrusion on the upper part of the socket is easily blocked by the retaining ring.
  • the upper part is obstructed, and the influence socket is smoothly inserted into the socket. After this happens, it is usually necessary to return the retaining ring as far as possible under the action of the auxiliary tool, so that the socket can enter the socket. Since the above-mentioned retaining ring 2 is provided with the rubber supporting block 5, such tolerance is greatly reduced after the retaining ring is installed in position, and the center of the retaining ring is substantially located near the axis of the tube, so that the socket is not applied much. The force can make the socket protrusion smoothly pass through the retaining ring 2 along the guiding inclined surface 11, thereby making the installation process more convenient.
  • the installation steps of the socket type pipe interface with anchoring function of the invention include:
  • the first step is to prepare the block 1, the pipe (the end of the pipe is the socket 9 and the other end is the socket 8), the dirt in the socket 9 is cleaned, and the sealing ring 10 is installed, in the apron 10 Applying a lubricant to it;
  • the rubber support block 5 is fixed to the fixing hole 4 on the stopper 1, and then the stopper 1 of the split type retaining ring 2 is installed one by one into the block chamber 7 disposed in the socket, and is spliced into one.
  • the third step is to install the socket 8 into the socket 9;
  • the block 1 is pushed upward and backward to move and compresses the rubber supporting block 5 on the block 1, and the socket protrusion 81 passes through the retaining ring 11 by means of the guiding inclined surface 11. Thereafter, the stopper 1 is tightly pressed against the outer surface of the socket 8 by the rubber support block 5 to function as an anchoring interface.
  • the installation process of the socket interface described in the invention has the following steps:
  • the first step is to prepare the block 1, the pipe (the end of the pipe is the socket 9 and the other end is the socket 8), the dirt in the socket 9 is cleaned, and the sealing ring 10 is installed, in the apron 10 Applying a lubricant to it;
  • the rubber support block 5 is fixed to the fixing hole 4 on the stopper 1, and then the stopper 1 of the split type retaining ring 2 is installed one by one into the block chamber 7 disposed in the socket, and two of them are A mounting card 12 is clamped between the blocks 1 and spliced into a ring-shaped whole body, as shown in Figures 9a, 9b and Figures 10 and 11;
  • the socket 8 is installed into the socket 9.
  • the mounting card can be removed.
  • the socket protrusion 81 pushes the blocking block 1 when passing through the retaining ring 2. Moving upwards and backwards and compressing the rubber support block 5 on the stopper 1, after the socket projection 81 passes through the retaining ring 2 by means of the guiding ramp 11, the stopper 1 is tightly pressed against the socket 8 by the rubber supporting block 5
  • the outer surface acts as an anchoring interface.
  • the mounting card 12 has a substantially U-shaped shape including an upper piece portion 13, a lower piece portion 14, and a connecting portion 15, the lower piece portion 14 being longer than the upper piece portion 13, and the connecting portion 15 being substantially vertical
  • the upper part and the lower part are connected to the ground. After the installation is in place, the mounting card is placed on the end wall of the socket, and the lower part is clamped between any two split blocks to assist in forming the integral retaining ring.
  • the socket type pipe joint with anchoring function can be used for ductile iron pipe, has simple structure and convenient installation, can effectively prevent the block from slipping, has firm and reliable connection, and has industrial applicability.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints With Sleeves (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)
  • Clamps And Clips (AREA)

Abstract

一种具有锚定功能的承插式管道接口，该接口的挡环（2）为分体式结构，包括多个挡块（1）。每一挡块（1）外径面上设有两个或多个固定孔（4），用于安装橡胶支撑块（5）。安装时先将挡块（1）逐块安装到挡块仓（7）内，拼接成一个整体；最后把插口（8）安装入承口（9）内即可。安装过程中，插口（8）凸起通过挡环（2）时，会推动挡块（1）向后运动并压缩挡环（2）上的橡胶支撑块（5），插口凸起通过挡环（2）后通过回拉插口（8），挡块（1）会在橡胶支撑块（5）的作用下压紧到插口（8）外表面上。该具有锚定功能的承插式管道接口结构简单，安装方便，防滑脱能力强，应用范围广泛。

Description

一种具有锚定功能的承插式管道接口、 安装方法及安装卡 技术领域
本发明涉及一种承插式管道接口结构， 特别是用于球墨铸铁管的具有分体式挡块形成的 锚定结构的承插式管道接口结构。 背景技术
具有分体式挡块的锚定结构的承插式管道接口结构简单， 安装方便， 在市政工程、 输油 输气等领域中有着广泛的应用。 其中， 锚定结构为挡块 （或类似部件） 的承插式管道接口由 于施工便利、 不易脱落更是得到广大用户的青睐。 这种接口一般包括承口和插口， 在插口上 设置突起， 将插口插入承口中后， 从挡块安装孔中插入挡块， 通过挡块将插口锚定在承口中， 防止插口与承口的连接脱离。 这类接口中， 挡块是接口连接可靠性的一个重要保证， 挡块一 旦脱落， 接口连接性能受损， 甚至会导致插口从承口中脱离。 因此， 如何在接口的安装和使 用过程中保证挡块不脱落是本领域技术人员所关注的一个重要技术问题。
图 la、 图 lb所示的是目前常用的一种承插式管道接口， 承口 111端部具有径向向内延 伸形成的环形壁 113， 在该环形壁 113上开设有挡块安装槽 114， 插口 110上设有凸起 117， 锚定元件为挡块 115， 在挡块 115上设有防滑脱凸起 116。 插口 110插入承口 111中， 将挡块 115上的防滑脱凸起 116对准挡块安装槽 114装入， 并沿插口 110管道圆周向旋转挡块 115， 使挡块 115上的防滑脱凸起 116置于环形壁 113的后面，并接着安装下一块挡块 115。当所有 挡块 115安装完毕后， 用钢带 112或其它锁紧物将挡块 115紧箍在插口 110的外管壁上。 当 插口 110受到向外拔出的力时， 插口 110上的凸起 117作用于挡块 115右端面， 挡块 115上 的防滑脱凸起 116作用于承口 111的环形壁 113的轴向内斜面 118，因而能够防止插口 110滑 脱。 虽然这种承插式管道接口在实际应用中已被证实很成功， 但它还存在一些缺陷。 例如， 固定挡块的步骤比较繁琐， 需要在挡块安装完毕后用钢带捆扎， 增加安装步骤； 同时， 由于 在外力的作用下， 插口会沿轴向移动， 多次的轴向移动容易造成固定挡块的钢带松脱、 甚至 断裂； 并且， 钢带等其它锁紧物直接与外部环境接触， 容易受环境影响腐蚀失效， 失去锁定 功能， 导致挡块脱落， 此外， 使用钢带成本较高。
专利文献 US4685708A公开了另一种常见的承插式管道接口，如图 2a_2c所示，挡块 30' 呈弧状， 挡块 30'通过销轴 34'相连形成一个环形的挡环 24'。 在其中一个挡块 30'的端部 30c' 和另一个挡块 30'的对应相对端上分别设置调节装置 26'的板 36'和 38'，通过连接板 36'和 38' 将组装好的挡环 24'放置在挡块仓 22'中， 并使挡环 24'的内径大于插口 10'上的焊环 28'的外 径， 以使焊环 28'顺利的越过挡环 24'。 焊环 28'越过挡环 24'后， 通过调节装置 26'调整两端 部 30c'和 30d'间的距离，将挡环 24'固定在插口 10'的外表面，以防止插口 10'从承口 12'脱落。 这种承插式管道接口没有使用固定挡块 30'的钢带， 但挡块 30'间需要通过销轴 34'连接， 并 且采用了调节装置 26'来固定挡环 24'， 调节装置 26'不仅需要同挡块 30'连接， 而且还设置螺 栓 42'、 基座 40'、 44'及螺母 46'等部件， 可见， 挡环和固定挡环的部件结构均比较复杂， 安 装步骤繁琐， 同时， 固定挡环的调节装置 26'处在外部环境中， 同样容易受环境腐蚀， 使接口 失去自锁功能。
本申请人的发明专利文献 CN102297297A公开了一种具有锚定结构的承插式管道接口，如 图 3a、3b所示，挡块 5 ' 上设置两组防滑脱凸起，每组防滑脱突起中含有两个防滑脱凸块 6 ' ， 在两个防滑脱凸块 6 ' 之间的挡块 5 ' 上设置有固定孔 1 ，橡胶块 12 ' 固定安装在挡块 5 ' 上。 当挡块 5' 安装到承口 与插口 10 ' 之间时， 橡胶块 12 ' 会受到承口 内表面的挤 压， 使橡胶块 12 ' 变形， 橡胶块 12 ' 的压缩变形产生的力使挡块 12 ' 紧贴在插口 10 ' 的外 表面， 防止活动脱落。 该种承插式管道接口不需要固定挡块的钢带， 同时， 橡胶块完全隐藏 在承口与插口之间的空间中， 不与外界环境接触， 避免安装过程中被意外划伤， 同时， 也避 免外部环境腐蚀， 大大延长了其使用寿命。 但上述承插式管道接口也存在有一定的缺陷， 比 如， 挡块和橡胶块的结构复杂， 制造较为复杂； 同时， 承口不是完整的环形结构， 其上存在 的挡块安装开口必将降低承口强度， 这些都制约着该类承插式结构的应用。
理想状况下， 挡环中心应尽可能位于管的轴线上， 插口按照同轴方向安装。 但是， 在现 有技术中， 但凡先在挡块仓中安装挡环， 而后实施插口安装到承口操作的接口类型， 还存在 的一个典型的问题是挡环安装到挡块仓中之后， 可能会由于重力作用使挡环向挡块仓的后下 方滑落， 从而其中心偏离管的轴线， 而造成插口安装的困难。
发明内容
为了克服现有技术存在的诸多缺点， 本发明提供一种具有锚定功能的承插式管道接口， 它 结构简单， 安装方便， 能够有效防止挡块滑脱， 连接牢固、 可靠， 本发明还提供一种具有锚 定功能的承插式管道接口的安装方法及安装卡。
本发明一种具有锚定功能的承插式管道接口， 包括承口、 插口和挡环， 所述承口的端部 径向向内延伸形成一完整的环形壁部， 所述插口的端部设置插口凸起， 所述挡环为分体式结 构， 其包括多个挡块和多个橡胶支撑块； 挡块上设置固定孔， 所述固定孔固定安装有所述橡 胶支撑块，所述橡胶支撑块与挡块的总高度等于或略大于承口内径尺寸与插口外径尺寸之差; 本发明一种具有锚定功能的承插式管道接口， 其中， 所述挡块呈弧状杆体， 并在向外的 端部径向向内形成导引斜面， 在所述挡块的弧状杆体上设置凹槽， 所述固定孔设置在凹槽底 部。
本发明的技术方案中由于挡环为分体式结构， 其由多个挡块组成， 挡块间不需要通过连 接部件连接在一起， 因此， 挡块结构简单。 固定挡块的为橡胶支撑块， 橡胶支撑块固定到挡 块上后， 与挡块一起设置在挡块仓中， 因此， 橡胶支撑块处在承口和插口之间， 不与外界接 触， 防止安装过程中橡胶支撑块被划伤， 同时也避免了橡胶支撑块被外部环境腐蚀， 延长了 使用寿命。 同时， 挡块是先安装到挡块仓中， 然后再将插口插入到承口中， 因此， 不需要在 承口的端部径向向内延伸的环形壁上开设挡块安装槽， 环形壁为一完整的壁， 增强了接口连 接强度。
而且， 挡环的直径要比挡块仓小， 因此， 当挡环放置到挡块仓中时， 在没有安装橡胶支 撑块的情况下， 挡环落在挡块仓下部， 四周与挡块仓分离， 这样就失去了将组成挡环的挡块 聚拢在一起的力， 导致组成挡环的挡块容易脱落或者挡环中心偏离轴心， 造成插口安装困难， 甚至导致插口无法安装进承口。 在挡块上安装橡胶支撑块后， 橡胶支撑块具有弹性， 当挡环 放置到挡块仓中， 橡胶支撑块作用在挡块仓内壁与挡块之间， 将挡环支撑固定， 并给予将挡 块聚拢在一起的力， 因此， 挡块不会散落， 保证了挡环的结构、 形状完好， 便于插口安装。
本发明一种具有锚定功能的承插式管道接口， 所述多个挡块的圆弧长之和等于或略小于 插口周长。
本发明一种具有锚定功能的承插式管道接口， 所述橡胶支撑块具有柱状基体， 在柱状基 体上形成有环状凸起， 环状凸起的下部的柱状基体部分与固定孔相适应。
橡胶支撑块为柱状， 柱状基体上形成有环状凸起， 环状凸起的的下部为固定柱， 当橡胶 支撑块的固定部插入固定到挡块固定孔上时， 环状凸起的下部与设置固定孔的槽底相接触， 这样， 当橡胶支撑块受压时， 环状凸起增大了橡胶支撑块与槽底的接触面积， 确保橡胶支撑 块不倾覆， 增强了接口连接的可靠性， 这一点在实际应用中已经得到验证。 总体看来， 橡胶 支撑块只是一个其上带有环状凸起的柱状体， 结构简单， 便于制造。
本发明的挡块可选择为两个或三个， 选择两个或三个便于挡块在挡块仓内安装到位， 形 成形状完整的挡环， 并且挡块间相互挤压， 挡环能够临时保持稳定状态。
另外， 本发明还提供了一种具有锚定功能的承插式管道接口的安装方法， 具体包括如下 安装步骤：
a、 清理管道承口， 安装密封胶圈， 并在密封胶圈上涂抹润滑剂；
b、 然后将分体式挡环的挡块一块一块安装到挡块仓内， 拼接成一个整体；
c、 将插口安装到承口内；
d、安装过程中， 插口凸起通过挡环时会推动挡环向上向后运动并压缩挡环上的橡胶支撑 块， 插口凸起沿导引斜面通过挡环后， 再略微向外拉动插口， 挡块就会在橡胶支撑块的作用 下压紧到插口外表面上起到锚固接口的作用。
优选地， 可利用如下的安装方法提升安装效率， 其包括如下步骤：
a、 清理管道承口， 安装密封胶圈， 并在密封胶圈上涂抹润滑剂； b、然后将分体式挡环的挡块一块一块安装到挡块仓内， 并在任意两个挡块之间卡设安装 卡， 使其拼接成为一个挡环整体；
c、 将插口安装到承口内， 当插口端部进入挡环内时即可拆卸安装卡；
d、安装过程中， 插口凸起通过挡环时会推动挡环向上向后运动并压缩挡环上的橡胶支撑 块， 插口凸起沿导引斜面通过挡环后， 挡块就会在橡胶支撑块的作用下压紧到插口外表面上 起到锚固接口的作用。
在上述安装方法中， 只需将分体式挡环的挡块逐块安装到挡块仓内， 拼接成一个整体， 然后将插口安装到承口内即可， 安装简单， 便于操作， 极大的减少了工期和施工难度， 具有 广阔的市场前景。
由于挡环是按整体模制后分段切开的， 同时铸管的插口外径也具有一定的公差， 从而会 出现部分挡环内径小于插口外径的情况， 对于这种情况， 本发明提供一种辅助安装卡， 其具 有整体呈 U形的结构， 其中下片部比上片部略长， 连接部垂直连接上、 下片部。 使用时， 安 装卡对接承口端的壁部， 上片部在壁上， 下片部在壁下， 并最终使连接部贴合到承口端的壁 部上。 此时， 下片部位于任意两个挡块之间， 辅助多个分体式挡块形成一个内径扩大的整体 挡环， 这样能使插口简捷地进入承口。
本发明所提供的具有锚定结构的承插式管道接口， 通过设置橡胶块固定挡块， 结构简单， 安装方便、 快捷， 防滑脱能力强、 效果好。 附图说明
图 la为现有技术中承插式管道接口的剖视图；
图 lb为现有技术中承插式管道接口的左视图；
图 2a为现有技术的挡环透视图；
图 2b为现有技术的挡环调节装置透视图；
图 2c为现有技术的插口安装剖视图；
图 3a为现有技术中承插式管道接口的主剖视图；
图 3b为现有技术中挡块的透视图；
图 4为本发明具有锚定功能的承插式管道接口的局部剖视图；
图 5为本发明具有锚定功能的承插式管道接口局部结构放大示意图；
图 6a为本发明具有锚定功能的承插式管道接口挡环的结构图；
图 6b为图 6a的 B-B剖面图；
图 7为本发明具有锚定功能的承插式管道接口中橡胶支撑块的透视图；
图 8a为本发明具有锚定功能的承插式管道接口挡环插入橡胶支撑块后的结构图; 图 8b为图 8a的 A-A剖面图；
图 9a为本发明具有锚定功能的承插式管道接口安装卡安装到位时承口的结构图； 图 9b为图 9a的 A-A剖面图；
图 10为本发明具有锚定功能的承插式管道接口中安装卡与挡环的位置关系透视图； 图 11为本发明具有锚定功能的承插式管道接口中安装卡到位后的承口局部剖视图； 图 12为本发明安装卡的透视图。 具体实施方式
附图标记说明： 1、 挡块， 2、 挡环， 3、 凹槽， 4、 固定孔， 5、 橡胶支撑块， 51、 柱状基 体， 52、 环状凸起， 53、 固定柱， 6、 环形壁， 7、 挡块仓， 8、 插口， 81、 插口凸起， 9、 承 口， 10、 胶圈， 11、 导引斜面， 12、 安装卡， 13、 上片部， 14 下片部， 15 连接部
如图 4、 5所示，在本发明具有锚定功能的承插式管道接口中，一节管道的一端为承口 9， 另一端为插口 8， 承口 9的端部具有径向向内延伸形成的环形壁 6， 该环形壁 6上面没有开设 供挡块 1安装的安装孔， 为完整的壁部， 插口 8上有插口凸起 81， 承口 9内表面设置有放置 挡块 1的挡块仓 7。
如图 6a、 图 6b所示， 挡环 2为一分体结构， 其包括三个结构相同的挡块 1， 三块挡块可 以形成一个环形整体， 即为挡环 2。 当然， 挡块 1 的数量可以根据具体需要进行设定， 选择 三个挡块是形成挡环 2的最佳实施方式， 这种情况下， 挡块 1比较容易安装到挡块仓 7中， 并临时形成比较稳定的挡环组合体， 挡块之间不需要连接固定到一起。 挡块 1为一弧形杆状 体， 在向外的端部径向向内形成导引斜面 11， 在挡块 1上沿弧面设置 2个凹槽 3， 凹槽 3的 底部与挡环 2的轴线基本平行， 在凹槽 3底部上设置有用于固设橡胶支撑块 5的固定孔 4。
如图 7所示， 橡胶支撑块 5具有柱状基体 51， 在柱状基体 51上形成有环状凸起 52， 柱 状基体 51的处于环状凸起 52的下部的部分为固定柱 53， 所述固定柱 53的形状、 大小与设 置在挡块外径面上的固定孔 4的形状、大小相适应。 当橡胶支撑块 5的固定柱 53插入到挡块 固定孔 4中固定后， 所述环状凸起 52的下端面与凹槽 3上的槽底面紧贴， 因此， 所述环状凸 起 52增加了橡胶支撑块 5与凹槽 3槽底的接触面积。 当橡胶支撑块 5受到压力变形时， 环状 凸起 52防止橡胶支撑块 5受压失稳， 发生倾覆。将橡胶支撑块 5固定到挡块 1上后的状态如 图 8a、 8b所示。 当插口 8安装到承口 9内的步骤结束后， 橡胶支撑块 5会给挡块 1施加径向 向内的作用力， 使挡块 1紧紧的贴在插口 8外表面。
设置橡胶支撑块 5具有帮助挡环 2定位对心的作用， 使插口 8安装到承口 9的过程变得 更加容易。 通常情况下的挡环并未设置类似橡胶支撑块 5这样的支撑体， 因此， 当一个完整 或者由多个挡块以某种方式结合到一起的挡环被整体放置到承口挡块仓 7中后， 在重力作用 下， 挡环的中心势必低于管的轴心， 从而使公差进一步被扩大， 当公差大到一定程度时， 插 口将不容易插入承口安装到位， 插口上部的插口凸起容易被挡环的上部所阻碍， 影响插口顺 利插入到承口中， 出现这种情况后， 通常还要在辅助工具的作用下使挡环尽可能回位， 才有 可能使插口进入承口内。 由于上述挡环 2具备橡胶支撑块 5， 从而在挡环安装到位后， 这种 公差将大大减小， 并使挡环中心基本上位于管的轴心附近， 这样， 只要对插口施加不太大的 力， 就能使插口突起沿导引斜面 11顺利通过挡环 2， 从而使安装过程更加便捷。
本发明具有锚定功能的承插式管道接口的安装步骤包括：
第一步 准备好挡块 1、 管道 （管道的一端为承口 9、 另一端为插口 8)， 将承口 9内污 物清理干净， 安装上起密封作用的胶圈 10， 在胶圈 10上涂上润滑剂；
第二步 将橡胶支撑块 5固定到挡块 1上的固定孔 4上， 然后将分体式挡环 2的挡块 1 逐块安装到设置于承口内的挡块仓 7内， 拼接成一个如图 8a、 8b所示的环形整体；
第三步 将插口 8安装到承口 9内；
第四步 安装过程中，插口凸起 81通过挡环 2时会推动挡块 1向上向后运动并压缩挡块 1上的橡胶支撑块 5， 插口凸起 81借助导引斜面 11通过挡环 2后， 挡块 1会在橡胶支撑块 5 的作用下紧密地压紧在插口 8外表面上起到锚固接口的作用。
如果多个挡块形成的环形整体即挡块 2的内径周长， 略小于金属管插口外径周长尺寸， 并且影响如上所述的正常安装步骤时， 则需要在安装卡的辅助下实施本发明所描述的承插式 接口的安装过程， 其步骤如下：
第一步 准备好挡块 1、 管道 （管道的一端为承口 9、 另一端为插口 8)， 将承口 9内污 物清理干净， 安装上起密封作用的胶圈 10， 在胶圈 10上涂上润滑剂；
第二步 将橡胶支撑块 5固定到挡块 1上的固定孔 4上， 然后将分体式挡环 2的挡块 1 逐块安装到设置于承口内的挡块仓 7内， 并在其中两个挡块 1之间卡设安装卡 12， 拼接成一 个的环形整体， 如图 9a、 9b及图 10、 图 11所示；
第三步 将插口 8安装到承口 9内， 当插口端部进入挡环 2内时即可拆卸安装卡； 第四步 安装过程中，插口凸起 81通过挡环 2时会推动挡块 1向上向后运动并压缩挡块 1上的橡胶支撑块 5， 插口凸起 81借助导引斜面 11通过挡环 2后， 挡块 1会在橡胶支撑块 5 的作用下紧密地压紧在插口 8外表面上起到锚固接口的作用。
如图 12所示， 上述安装卡 12具有大致为 U形的形状， 其包括上片部 13， 下片部 14以 及连接部 15， 下片部 14比上片部 13长， 连接部 15基本垂直地连接上片部和下片部。 安装 到位后， 安装卡卡设在承口的端壁上， 其下片部卡设在任意两个分体式挡块之间， 以辅助形 成整体的挡环。
虽然本发明一个挡块上只设置两个凹槽 3和两个固定孔 4， 实际使用时可以根据实际设 置多个凹槽 3和固定孔 4。 并且， 对本领域技术人员来说， 本领域技术人员在本发明技术方 案的范围内可以对上述实施例进行无穷尽的变换， 这些均落到本发明的保护范围内。
工业实用性
本发明具有锚定功能的承插式管道接口可用于球墨铸铁管， 结构简单、 安装方便， 能够 有效防止挡块滑脱， 连接牢固、 可靠， 具有工业实用性。

Claims

m 一种具有锚定功能的承插式管道接口， 包括承口 （9)、 插口 （8) 和挡环 （2)， 所述 承口 （9) 的端部径向向内延伸形成一完整的环形壁部 （6)， 在所述环形壁部 （6) 内形成挡 块仓 （7)， 所述插口 （8) 的端面上设置有插口凸起 （81)， 其特征在于：
所述挡环 （2) 为分体式结构， 其包括多个挡块 （1) 和多个橡胶支撑块 （5)， 所述挡块 (1) 径向向外的面上设置固定孔 （4)， 所述固定孔 （4) 中固定安装所述橡胶支撑块 （5)， 所述橡胶支撑块（5) 与所述挡块（1) 的径向总高度等于或略大于承口 （9) 最大内径尺寸与 插口 （8) 外径尺寸之差。
2、 根据权利要求 1所述的具有锚定功能的承插式管道接口， 其特征在于： 所述挡块（1) 呈弧状杆体状， 并在向外的端部径向向内形成导引斜面 （11)， 在所述挡块 （1) 的弧状杆体 上设置凹槽 （3)， 所述固定孔 （4) 设置在凹槽底部。
3、 根据权利要求 1所述的具有锚定功能的承插式管道接口， 其特征在于： 所述多个挡块 (1) 的圆弧长之和等于或略小于插口周长。
4、 根据权利要求 2所述的具有锚定功能的承插式管道接口， 其特征在于： 每一挡块（1) 上均匀设置两个所述凹槽 （3)。
5、 根据权利要求 1-4任一项所述的具有锚定功能的承插式管道接口， 其特征在于： 所述 橡胶支撑块（5) 具有柱状基体（51)， 在柱状基体上形成环状凸起（52)， 所述环状凸起下部 的柱状基体部分与固定孔 （4) 相适应。
6、 根据权利要求 1-4任一项所述的具有锚定功能的承插式管道接口， 其特征在于： 挡块 的数量是 3个。
7、 根据权利要求 1-4任一项所述的具有锚定功能的承插式管道接口， 其特征在于： 挡块 的数量是 2个。
8、如权利要求 1-6任一项所述的具有锚定功能的承插式管道接口的安装方法， 包括如下 安装步骤：
a、 清理管道承口 （9)， 安装密封胶圈， 并在密封胶圈上涂抹润滑剂；
b、 将橡胶支撑块（5)安装到各个挡块（1)上， 将挡块（1)逐块安装到挡块仓（7) 内， 组合成一个完整的挡环 （2);
c、 将插口 （8) 安装到承口 （9) 内；
d、 插口凸起 （81) 沿导引斜面 （11) 通过挡环 （2) 后， 安装到位。
9、如权利要求 1-6任一项所述的具有锚定功能的承插式管道接口的安装方法， 包括如下 安装步骤：
a、 清理管道承口 （9)， 安装密封胶圈， 并在密封胶圈上涂抹润滑剂；
b、 将橡胶支撑块（5)安装到各个挡块（1)上， 将挡块（1)逐一安装到挡块仓（7) 内， 并在任意两个挡块之间卡设安装卡 （12)， 组合成一个完整的挡环 （2);
c、 将插口 （8)安装到承口 （9) 内， 并在插口端部进入挡环（2) 中后拆卸安装卡（12); d、 插口凸起 （81) 沿导引斜面 （11) 通过挡环 （2) 后， 安装到位。
10、一种用于辅助安装如权利要求 1-7所述的具有锚定功能的承插式管道接口的安装卡， 其特征在于： 包括上片部（13)、下片部 (14)和连接部（15)， 连接部 (15)连接上片部（13)、 下片部 （14) 形成 U形结构。
11、 如权利要求 10所述的安装卡， 其特征在于： 所述下片部 （14) 比上片部 （13) 长。
12、 如权利要求 11所述的安装卡， 其特征在于： 所述连接部 （15) 垂直于上片部 （14) 和下片部 （15)。
PCT/CN2014/083867 2013-11-14 2014-08-07 一种具有锚定功能的承插式管道接口、安装方法及安装卡 WO2015070648A1 (zh)

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