WO2011069417A1 - 管道连接件 - Google Patents

管道连接件 Download PDF

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Publication number
WO2011069417A1
WO2011069417A1 PCT/CN2010/079225 CN2010079225W WO2011069417A1 WO 2011069417 A1 WO2011069417 A1 WO 2011069417A1 CN 2010079225 W CN2010079225 W CN 2010079225W WO 2011069417 A1 WO2011069417 A1 WO 2011069417A1
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WO
WIPO (PCT)
Prior art keywords
pipe
section
outer side
nut
inner cone
Prior art date
Application number
PCT/CN2010/079225
Other languages
English (en)
French (fr)
Inventor
倪金宝
Original Assignee
上虞市优耐德管业有限公司
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Filing date
Publication date
Application filed by 上虞市优耐德管业有限公司 filed Critical 上虞市优耐德管业有限公司
Publication of WO2011069417A1 publication Critical patent/WO2011069417A1/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
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/04—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection
    • F16L19/041—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts using additional rigid rings, sealing directly on at least one pipe end, which is flared either before or during the making of the connection the ring being an insert
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
    • F16L47/04—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with a swivel nut or collar engaging the pipe
    • F16L47/041—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics with a swivel nut or collar engaging the pipe the plastic pipe end being flared either before or during the making of the connection

Definitions

  • the invention relates to a pipe joint.
  • the disposable use and heat resistance of the PPR tube are poor, and the aluminum-plastic tube has the advantages of heat resistance and reusability.
  • connection methods include hot melt and pipe connection, but small-diameter books and thin-walled pipes basically adopt pipe connection.
  • various non-welding fittings are necessary. All kinds of ferrules and snap fittings commonly used in the market now have Its own defects, either insufficient card pressure, lead to easy leakage trip; or severely reduced diameter, affecting pipe flow.
  • the pipe formed by aluminum-plastic pipe is prone to leakage and the shortage of pipe flow.
  • the reason is that the aluminum-plastic pipe is equipped with a ferrule type copper pipe fitting, and the ferrule type copper pipe is used.
  • the structure of the piece has the following problems: 1. Since the connecting pipe of the ferrule type copper pipe piece needs to protrude into the aluminum-plastic pipe, the pipe diameter is reduced, for example, the inner diameter of the aluminum-plastic pipe is 12 mm, but the inner diameter of the copper pipe piece is only 8mm, seriously affecting the radial flow; 2. Install a sealing ring at the end of the connecting pipe that extends into the aluminum-plastic pipe, and the casing is snapped onto the connecting pipe.
  • the present invention provides a pipe connecting member which increases the drawing force and effectively solves the leakage of the pipe.
  • a pipe connecting member comprising a pressing nut, wherein the inner cavity of the pressing nut is a mounting passage through which the pipe passes, and the inner side of the pressing nut is provided with a connecting section, and the connecting section is sealingly connected with other pressing nuts,
  • the outer side of the mounting channel has a cylindrical shape matching the pipe, and the inner side of the mounting channel is provided with a tapered section, and the diameter of the tapered section is greatly reduced from the inner side to the outer side
  • the pipe connecting piece further includes An inner cone extending into the end of the expanded pipe, the inner cavity of the inner cone being a water flow passage, the outer diameter of the inner cone being greatly reduced from the inner side to the outer side, the inner cone being located at the Within the tapered section.
  • the "pipe end expansion" shown in this application has two meanings: One is that for pipes similar to hard materials such as aluminum-plastic pipes, it is usually necessary to cut the end of the pipe, for example, into two pieces. Three pieces, four pieces or even more pieces, which facilitate the insertion of the inner vertebral body after slitting.
  • the pipe will be broken, Conducive to the prevention of leakage;
  • the second is for the pipeline of soft materials, because the pipeline itself has a certain degree of relaxation, there is no need to cut the end of the pipeline, as long as the inner cone is inserted into the end of the pipeline by external force, the pipeline of soft material The ends will be squeezed open.
  • outer wall of the inner end of the inner cone is provided with a lower groove for crimping the front end of the pipe. Still further, the outer wall of the inner cone is provided with radial teeth.
  • the aperture of the water flow channel is equal to the diameter of the pipe.
  • the aperture of the water flow channel may be selected to be slightly larger or smaller than the diameter of the pipe, and may be selected according to actual conditions.
  • the outer side of the mounting passage is provided with an additional internal thread segment
  • the pipe connecting member further includes a sealing nut for preventing leakage of the outer side
  • the sealing nut is provided with an external thread
  • the sealing nut and the additional The internal thread segments are connected.
  • the sealing nut is added to prevent leakage outside the installation channel.
  • the sealing nut is sealingly coupled to the additional internally threaded section.
  • the inner cone has a taper angle of 8 to 10 degrees.
  • the connecting section is an externally threaded section
  • the tapered section is located in the externally threaded section
  • an inner threaded section of the tubular body is mounted on the externally threaded section.
  • the connecting section is an internally threaded section, the internal threaded section is in contact with the tapered section, and an externally threaded section on the tubular body is mounted on the internally threaded section.
  • the inner cavity of the compression nut is a water flow passage
  • the outer side of the compression nut is provided with a connecting section (usually a threaded section) connected with other compression nuts
  • the inner cavity of the compression nut is provided for
  • the installation passage through which the pipe passes is provided with a tapered section on the inner side of the installation passage, the outer side of the installation passage is cylindrically matched with the pipe, and the pipe end with the inner cone is located in the tapered section.
  • the connection relationship between the inner cone and the pipe is: expanding the end of the pipe, for example, using a tool to expand the end of the pipe, for example, dividing the end of the pipe into at least two pieces, divided into four pieces or six pieces, usually For a 12 mm inner diameter pipe, it can be cut into four equal parts;
  • the inner cavity of the inner cone is a water flow channel, the water flow channel is the same size or similar to the pipe, and the inner cone outer wall is provided with radial teeth, the inner cone
  • the outer diameter of the body is changed from large to small from the inner side to the outer side, and the inner end of the inner wall of the inner cone is provided with a lower groove, and the front end of the pipe is crimped into the lower groove.
  • An outer threaded section is disposed on an outer side of the mounting passage, and a sealing nut for preventing leakage of the outer side is provided with an external thread, and a sealing nut is connected with the additional internal thread section, and a sealing connection is generally adopted, and the sealing connection is selected in a threaded connection.
  • the inner cone Since the inner cone is installed on the pipe, the inner cone extends into the expanded pipe, and the size of the water flow passage of the inner cone is the same as or similar to the pipe, and the pipe diameter is not reduced, thereby effectively reducing the pipe diameter. flow.
  • the beneficial effects of the invention are mainly manifested in: 1. Increasing the drawing force and effectively solving the pipeline leakage; 2. Avoiding reducing the pipeline flow.
  • Figure 1 is a schematic view of the structure of a pipe joint with pipes.
  • Figure 2 is an exploded perspective view of the pipe joint.
  • Figure 3 is an exploded schematic view of a pipe joint with a pipe.
  • Figure 4 is a schematic view of the structure of the compression nut.
  • Figure 5 is a cross-sectional view of the compression nut.
  • Figure 6 is a schematic view showing the structure of the inner cone.
  • Figure 7 is a cross-sectional view of the inner cone.
  • Figure 8 is a schematic view of the structure of the sealing nut.
  • Figure 9 is a schematic view showing the structure of the nut of the pipe member.
  • Figure 10 is a structural view of a three-way type pipe joint of an internal tooth type.
  • Figure 11 is a plan view of Figure 10.
  • Figure 12 is a cross-sectional view taken along line A-A of Figure 11;
  • Figure 13 is a structural view of the inner tooth elbow pipe joint.
  • Figure 14 is a plan view of Figure 13.
  • Figure 15 is a cross-sectional view taken along line A-A of Figure 14;
  • Figure 16 is a structural view of the inner tooth direct type pipe joint.
  • Figure 17 is a left side view of Figure 16 .
  • Fig. 18 is a cross-sectional view taken along line AA of Fig. 17;
  • Figure 19 is a structural view of a three-way pipe joint.
  • Figure 20 is a plan view of Figure 19.
  • Figure 21 is a cross-sectional view taken along line A-A of Figure 20 .
  • Figure 22 is a structural view of the elbow pipe joint.
  • Figure 23 is a left side view of Figure 22.
  • Figure 24 is a cross-sectional view taken along line A-A of Figure 22 .
  • Figure 25 is a structural view of a three-way type pipe joint of an external tooth type.
  • Figure 26 is a plan view of Figure 25.
  • Figure 27 is a cross-sectional view taken along line A-A of Figure 26 .
  • Figure 28 is a structural view of the external elbow pipe joint.
  • Figure 29 is a right side view of Figure 28.
  • Figure 30 is a cross-sectional view taken along line A-A of Figure 29;
  • Figure 31 is a structural view of a two-way pipe joint.
  • Figure 32 is a left side view of Figure 31.
  • Figure 33 is a cross-sectional view taken along line A-A of Figure 33.
  • Figure 34 is a structural view of the outer tubular two-way pipe joint.
  • Figure 35 is a right side view of Figure 34.
  • Figure 36 is a cross-sectional view taken along line A-A of Figure 35.
  • Figure 37 is a structural view of another three-way pipe joint.
  • Figure 38 is a plan view of Figure 37.
  • Figure 39 is a cross-sectional view taken along line B-B of Figure 38.
  • Figure 40 is a schematic view showing the inner diameter of the inner cone being smaller than the diameter of the pipe.
  • Figure 41 is a schematic illustration of the structure in which the structure is applied to a valve. detailed description
  • a pipe connecting member includes a pressing nut 1 .
  • the inner cavity of the pressing nut 1 is a mounting passage 2 through which the pipe 10 passes.
  • the inner side of the pressing nut 1 is provided with a connecting portion.
  • the connecting section is sealingly connected to the tubular body 3, the outer side of the mounting channel 2 is cylindrically matched with the pipe, and the inner side of the mounting channel 2 is provided with a tapered section 4, and the diameter of the tapered section 4 is from the inner side.
  • the outer side of the inner cone 5 is a water flow passage, and the inner cone 5 is 5 The outer diameter is reduced from large to small from the inner side to the outer side, and the inner cone 5 is located inside the tapered section 4.
  • the "pipe end expansion" shown in this embodiment has two meanings: First, for a pipe similar to a hard material such as an aluminum-plastic pipe, it is usually necessary to slit the pipe end, for example, to cut into two. Slices, three pieces, four pieces or even more pieces, which facilitate the insertion of the inner vertebral body after slitting. For the hard material pipe, if the inner vertebral body is forcibly inserted into the pipe by external force, the pipe will be broken.
  • the second is that for the pipeline of soft material, since the pipeline itself has a certain degree of relaxation, it is not necessary to cut the end of the pipeline, as long as the inner cone is inserted into the end of the pipeline by external force, the soft material The end of the pipe will be squeezed open.
  • the outer wall of the inner end of the inner cone 5 is provided with a lower recess 6 for crimping the front end of the duct.
  • the outer wall of the inner cone 5 is provided with radial teeth 7.
  • the aperture of the water flow channel is equal to the aperture of the pipe; of course, the aperture of the water flow channel may be selected to be slightly larger or smaller than the aperture of the pipe, and may be selected according to actual conditions.
  • An outer threaded section 8 is disposed on an outer side of the mounting passage 2, and the pipe connecting member further includes a sealing nut 9 for preventing leakage of the outer side.
  • the sealing nut 9 is provided with an external thread, and the sealing nut 9 and the sealing nut 9 are provided. Additional internal thread segment connections are described.
  • the sealing nut 9 is sealingly connected to the additional internal thread section. In this place, the sealing nut is added to prevent leakage outside the installation channel. If the sealing nut is not added, it can also be selected.
  • a sealing ring is arranged at the minimum inner diameter end of the conical section, and the sealing ring is located between the conical section and the outer wall of the pipe. When the pipe contracts in cold, the pulling force will squeeze the seal between the pipe and the conical section. The ring has a good sealing effect and prevents leakage.
  • the inner cone 5 has a taper angle of 8 to 10 degrees.
  • the connecting section is an externally threaded section
  • the tapered section 4 is located in the externally threaded section
  • the internally threaded section of the tubular body is mounted on the externally threaded section.
  • the connecting section is an internally threaded section
  • the internal threaded section is in contact with the tapered section 4
  • the externally threaded section of the tubular body is mounted on the internally threaded section.
  • the connecting section is sealingly connected with the pipe body 3, and the sealing connection structure at the place is generally: providing a sealing ring at the threaded connection to prevent leakage; of course, other sealing connection manners may also be adopted; 9 is in sealing connection with the additional female threaded section, also using conventional techniques in the art, i.e., providing a sealing ring at the threaded joint.
  • the cutting tool of the embodiment includes a base and a mounting shaft, and a lower end of the mounting shaft is fixedly connected to the base, and an upper end of the mounting shaft is provided with a chamfer for guiding the inserted pipe, and the lower side of the mounting shaft is opened At least two blade slots, the blade slots are axially disposed, and each blade slot is equally spaced on a circumference of the mounting shaft, the blade is mounted in the blade slot, and the upper end of the blade is a blade edge.
  • the mounting shaft is tapered from the cutting edge to the upper end, and the outer diameter of the tapered blade is larger than the outer diameter of the upper end.
  • the cone has a taper angle of 8 to 10 degrees.
  • the blade slots are two, four, six or eight. Usually, an even number of blade slots are set, mainly considering the actual processing needs, for example, by slotting the center of the mounting shaft, and two can be issued at a time. One blade slot for easy processing; of course, you can also design an odd number of blade slots, which is relatively cumbersome to machine.
  • the two opposite blades are located on the same diameter of the mounting shaft and are generally crisscrossed; when there are six blade slots, the opposite blades are located on the same diameter of the mounting shaft, overall The word is crossed.
  • the front end of the pipe receives the impact force, and the impact force is balanced by the pipe itself.
  • the combination with the body of the pipe can have the following applications:
  • the structure is an internal three-way type pipe joint, wherein one internal tooth interface is connected to the access pipe, and the other two interfaces are connected with pipes such as aluminum-plastic pipes, which can effectively prevent leakage.
  • the structure is an internal elbow pipe joint, in which one internal tooth interface is connected to the access pipe, and the other interface is connected to a pipe such as an aluminum plastic pipe, which can effectively prevent leakage.
  • the structure is a direct internal pipe joint, in which one internal tooth interface is connected to the access pipe, and the other interface is connected to a pipe such as an aluminum plastic pipe to prevent leakage.
  • the structure shown is a three-way pipe joint, and the three ports are connected to pipes such as aluminum-plastic pipes to prevent leakage.
  • FIG. 22 Referring to Figures 22, 23, 24, the structure shown is an elbow pipe joint, both of which are connected to aluminum-plastic pipes, etc. Pipe connections provide effective protection against leaks.
  • the structure is an external three-way type pipe joint, wherein one external tooth interface is connected to the access pipe, and the other two interfaces are connected with pipes such as aluminum-plastic pipes, which can effectively prevent leakage.
  • the structure shown is an external elbow pipe joint, in which one external toothed interface is connected to the access pipe and the other interface is connected to a pipe such as an aluminum plastic pipe to prevent leakage.
  • the structure shown is a two-way pipe joint, and the two ports are connected to pipes such as aluminum-plastic pipes to prevent leakage.
  • the structure shown is an outer-toothed two-way pipe joint in which one external toothed interface is connected to the access pipe and the other interface is connected to a pipe such as an aluminum-plastic pipe to prevent leakage.
  • the structure shown is another three-way pipe joint, and the three ports are connected to pipes such as aluminum-plastic pipes to prevent leakage.
  • the inner diameter of the inner cone is smaller than the diameter of the pipe.
  • the inner diameter of the inner cone is small, similar to the size in the prior art, but since the structure is adopted, Effectively prevent leakage.
  • Fig. 41 is a schematic view showing the structure in which the structure is applied to the valve, and the structure in which the valve is connected to the pipe side is also designed in the same manner to ensure that no leakage occurs at the junction of the valve and the pipe.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Joints Allowing Movement (AREA)
  • Joints With Pressure Members (AREA)

Description

管道连接件 技术领域
本发明涉及一种管道连接件。
背景技术
普通家庭装修中， 通常采用铝塑管或者 PPR管， 就管道本身而言， 相对于
说
PPR管的一次性使用和耐热性差， 铝塑管具有耐热性和重复使用性等优点。
随着塑料管道在各种应用中的大量推广使用，其优越性也被人们逐渐认识和 接受， 其连接方式有热熔和管件连接等， 但小口径书、薄壁的管道基本采用管件连 接方式，特别是需要反复拆卸利用的情况下和环境限制只有简易工具才能安装拆 卸的时候，各种非熔接性管件就非常必要，现在市场上普遍使用的各类卡套式和 卡压式管件都有其自身的缺陷， 要么卡压力不够， 导致容易泄露脱扣； 要么严重 縮径， 影响管道流量。
以铝塑管为例进行说明，由于采用铝塑管形成的管路容易出现泄漏和管道流 量较小的不足，其原因是铝塑管配套的卡套式铜管件，该卡套式铜管件的结构上 存在如下问题： 1、 由于卡套式铜管件的连接路管需要伸入到铝塑管内， 縮小了 管径， 例如铝塑管的内径是 12mm， 但是铜管件的内径只有 8mm， 严重影响了 径向流量； 2、 在伸入到铝塑管的连接管路的末端安装密封圈， 套管卡接在连接 管路上， 该结构使得卡套式铜管件的拉拔力严重不足， 由于管道的遇冷收縮， 容 易拉拔铝塑管， 连接管路上的密封圈很容易引起的脱扣， 导致泄漏的发生。 发明内容
为了克服已有的铝塑管的卡套式铜管件的拉拔力严重不足、 容易产生泄漏的 不足， 本发明提供一种增大拉拔力、 有效解决管路泄漏的管道连接件。
本发明解决其技术问题所采用的技术方案是： 一种管道连接件， 包括压紧螺母， 所述压紧螺母的内腔为供管道穿过的安装 通道， 压紧螺母的内侧设有连接段， 所述连接段与其他压紧螺母密封连接， 所述 安装通道的外侧呈与管道匹配的圆柱形， 所述安装通道的内侧设有锥形段， 所述 锥形段的孔径从内侧到外侧由大变小； 所述管道连接件还包括用以伸入胀开的管 道端部的内锥体， 所述内锥体的内腔为水流通道， 所述内锥体的外径从内侧到外 侧由大变小， 所述内锥体位于所述锥形段内。
本申请中所示的 "管道端部胀开"有两种含义： 其一是对于类似于铝塑管等 硬质材料的管道， 通常需要将管道端部进行分切， 例如分切为两片、 三片、 四片 甚至更多片， 分切后便于内椎体的插入， 对于硬质材料管道， 如果不分切， 将内 椎体通过外力强行插入所述管道， 会造成管道破裂， 不利于防止泄漏； 其二是对 于软质材料的管道， 由于管道本身具有一定的张弛度， 不需要对管道端部进行分 切， 只要借助外力将内锥体插入管道端部， 软质材料的管道端部会被挤压胀开。
进一步， 所述内锥体内侧端的外壁设有用以供管道的前端压接的下凹槽。 再进一步， 所述内锥体的外壁设有径向齿。
所述水流通道的孔径与所述管道的孔径相等， 当然， 也可以选择水流通道的 孔径比所述管道的孔径稍大或稍小， 可根据实际情况进行选择。
更进一步， 所述安装通道的外侧设有附加内螺纹段， 所述管道连接件还包括 用以防止外侧泄漏的密封螺母， 所述密封螺母上设有外螺纹， 所述密封螺母与所 述附加内螺纹段连接。 该处采用增设密封螺母的方式防止安装通道外侧泄漏， 如 果不增设该密封螺母， 也可以选择在锥形段的最小内径端加设密封圈， 密封圈位 于锥形段与管道外壁之间， 当管道遇冷收縮时， 拉拔力会挤压所述管道与锥形段 之间的密封圈， 使之具有良好的密封效果， 防止泄露。
所述密封螺母与所述附加内螺纹段密封连接。 所述内锥体的锥度角为 8~10° 。
所述连接段为外螺纹段， 所述锥形段位于所述外螺纹段内， 管件主体的内螺 纹段安装在所述外螺纹段上。
所述连接段为内螺纹段， 所述内螺纹段与所述锥形段相接， 管件主体上的外 螺纹段安装在所述内螺纹段上。
本发明的技术构思为： 压紧螺母的内腔为水流通道， 所述压紧螺母的外侧设 有与其他压紧螺母连接的连接段（通常采用螺纹段），压紧螺母的内腔为供管道穿 过的安装通道， 所述安装通道的内侧设有锥形段， 所述安装通道的外侧呈与管道 匹配的圆柱形， 带有内锥体的管道端部位于所述锥形段内。
内锥体与管道的连接关系为： 将管道的端部胀开， 例如采用工具将管道的端 部胀开，例如将管道的端部分割成至少两块，分成四块或着六块，通常对于 12mm 内径的管道， 可以切成四等分； 内锥体的内腔为水流通道， 该水流通道的大小与 管道相同或类似， 所述内锥体外壁设有径向齿， 所述内锥体的外径从内侧到外侧 由大变小， 所述内锥体外壁的内侧端设有下凹槽， 所述管道的前端压接在所述下 凹槽内。
所述安装通道的外侧设有附加内螺纹段， 用以防止外侧泄漏的密封螺母设有 外螺纹， 密封螺母与所述附加内螺纹段连接， 通常采用密封连接， 密封连接的方 式选择在螺纹连接处设置橡胶圈。
由于在管道上安装了内锥体， 所述内锥体伸入胀开后的管道内， 内锥体的水 流通道的大小与管道相同或类似， 不会縮小管径， 能够有效避免减少管路流量。
当管道遇冷收縮时， 管道的前端受到很大的拉拔力， 由于管道的端部安装了 内锥体， 且所述内锥体位于压紧螺母的内锥段内， 当管道的前端所受的拉拔力越 大， 管道的端部与所述内锥段贴合地越紧密， 即压紧螺母与管道之间的密封性能 越好， 由于冷縮产生的拉拔力完全由管道自身的形变应力平衡， 有效避免了管道 与压紧螺母之间松开， 避免了发生管道连接件泄漏现象。
本发明的有益效果主要表现在： 1、 增大拉拔力、 有效解决管路泄漏； 2、 避 免减少管路流量。
附图说明
图 1是带有管道的管道连接件的结构示意图。
图 2是管道连接件的分解示意图。
图 3是带有管道的管道连接件的分解示意图。
图 4是压紧螺母的结构示意图。
图 5是压紧螺母的截面图。
图 6是内锥体的结构示意图。
图 7是内锥体的截面图。
图 8是密封螺母的结构示意图。
图 9是管件主体螺母的结构示意图。 图 10是内牙式三通型管道连接件的结构图。
图 11是图 10的俯视图。
图 12是图 11的 A-A剖视图。 图 13是内牙式弯头管道连接件的结构图。
图 14是图 13的俯视图。
图 15是图 14的 A-A剖视图。 图 16是内牙直接型管道连接件的结构图。
图 17是图 16的左视图。 图 18是图 17的 A-A剖视图。 图 19是三通管道连接件的结构图。
图 20是图 19的俯视图。
图 21是图 20的 A-A剖视图。
图 22是弯头管道连接件的结构图。
图 23是图 22的左视图。
图 24是图 22的 A-A剖视图。
图 25是外牙式三通型管道连接件的结构图。
图 26是图 25的俯视图。
图 27是图 26的 A-A剖视图。
图 28是外牙式弯头管道连接件的结构图。
图 29是图 28的右视图。
图 30是图 29的 A-A剖视图。
图 31是二通管道连接件的结构图。
图 32是图 31的左视图。
图 33是图 33的 A-A剖视图。
图 34是外牙式二通管道连接件的结构图。
图 35是图 34的右视图。
图 36是图 35的 A-A剖视图。
图 37是另一种三通管道连接件的结构图。
图 38是图 37的俯视图。
图 39是图 38的 B-B剖视图。
图 40是内锥体的内径比管道的管径小的结构示意图。 图 41将结构应用到阀门中的结构示意图。 具体实施方式
下面结合附图对本发明作进一步描述。
参照图 1〜图 9， 一种管道连接件， 包括压紧螺母 1， 所述压紧螺母 1的内腔 为供管道 10穿过的安装通道 2， 压紧螺母 1的内侧设有连接段， 所述连接段与 管件主体 3密封连接， 所述安装通道 2的外侧呈与管道匹配的圆柱形， 所述安装 通道 2的内侧设有锥形段 4， 所述锥形段 4的孔径从内侧到外侧由大变小； 所述 管道连接件还包括用以伸入胀开的管道端部的内锥体 5， 所述内锥体 5的内腔为 水流通道， 所述内锥体的 5外径从内侧到外侧由大变小， 所述内锥体 5位于所述 锥形段 4内。
本实施例中所示的 "管道端部胀开"有两种含义： 其一是对于类似于铝塑管 等硬质材料的管道， 通常需要将管道端部进行分切， 例如分切为两片、 三片、 四 片甚至更多片， 分切后便于内椎体的插入， 对于硬质材料管道， 如果不分切， 将 内椎体通过外力强行插入所述管道， 会造成管道破裂， 不利于防止泄漏； 其二是 对于软质材料的管道， 由于管道本身具有一定的张弛度， 不需要对管道端部进行 分切，只要借助外力将内锥体插入管道端部，软质材料的管道端部会被挤压胀开。
所述内锥体 5内侧端的外壁设有用以供管道的前端压接的下凹槽 6。 所述内 锥体 5的外壁设有径向齿 7。
所述水流通道的孔径与所述管道的孔径相等； 当然， 也可以选择水流通道的 孔径比所述管道的孔径稍大或稍小， 可根据实际情况进行选择。
所述安装通道 2的外侧设有附加内螺纹段 8， 所述管道连接件还包括用以防 止外侧泄漏的密封螺母 9， 所述密封螺母 9上设有外螺纹， 所述密封螺母 9与所 述附加内螺纹段连接。 所述密封螺母 9与所述附加内螺纹段密封连接。 该处采用 增设密封螺母的方式防止安装通道外侧泄漏， 如果不增设该密封螺母， 也可以选 择在锥形段的最小内径端加设密封圈， 密封圈位于锥形段与管道外壁之间， 当管 道遇冷收縮时， 拉拔力会挤压所述管道与锥形段之间的密封圈， 使之具有良好的 密封效果， 防止泄露。
所述内锥体 5的锥度角为 8~10° 。
所述连接段为外螺纹段， 所述锥形段 4位于所述外螺纹段内， 管件主体的内 螺纹段安装在所述外螺纹段上。
或者是： 所述连接段为内螺纹段， 所述内螺纹段与所述锥形段 4相接， 管件 主体的外螺纹段安装在所述内螺纹段上。
本实施例中， 所述连接段与管件主体 3密封连接， 该处的密封连接结构通常 为： 在螺纹连接处设置密封圈， 防止泄漏； 当然， 也可以采用其他密封连接方式； 所述密封螺母 9与所述附加内螺纹段密封连接， 也采用本领域的常规技术， 即在 螺纹连接处设置密封圈。
装配时， 先将密封螺母 9和压紧螺母 1入管道内， 再采用分切工具将管道的 端部胀开， 例如将管道的端部分割成至少两块， 分成四块或着六块， 通常对于 12mm内径的管道， 可以切成四等分； 将内锥体 5安装到管道的端部， 然后将压 紧螺母 1滑移到管道的端部， 使得内锥体 5位于压紧螺母的锥形段 4内； 然后， 再将压紧螺母 1与其他压紧螺母密封连接， 完成整个管道连接件的装配。
本实施例的分切工具包括底座和安装轴， 所述安装轴的下端与所述底座固定 连接， 所述安装轴的上端设有供插入管道导向的倒角， 所述安装轴的下方开有至 少两个刀片插槽， 刀片插槽轴向布置， 各个刀片插槽等间隔分布在所述安装轴的 一周上， 刀片安装在所述刀片插槽内， 所述刀片的上端为刀刃。
所述安装轴从刀刃处到上端呈锥形， 锥形的刀刃处的外径比上端的外径大。 所述锥形的锥度角为 8~10° 。 所述刀片插槽有两个、 四个、六个或八个， 通常情况下设置偶数个刀片插槽， 主要是考虑到实际加工的需要， 例如通过安装轴的圆心开槽， 一次可以开具两个 刀片插槽， 方便加工； 当然， 也可以设计奇数个刀片插槽， 只是加工时相对麻烦。 当刀片插槽有四个时， 两两相对的刀片位于安装轴的同一直径上， 总体呈十字交 叉； 当刀片插槽有六个时， 两两相对的刀片位于安装轴的同一直径上， 总体呈米 字交叉。
本实施例的工作过程： 当管道遇冷收縮时， 管道的前端受到很大的拉拔力， 由于管道的端部安装了内锥体 5， 且所述内锥体 5位于压紧螺母的锥形段 4内， 当管道的前端所受的拉拔力越大， 则管道的端部与所述锥形段 4贴合地越紧密， 即管道连接件与管道之间的密封性能越好， 由于冷縮产生的拉拔力完全由管道自 身的形变应力平衡， 有效避免了管道与压紧螺母之间松开， 避免了发生管道连接 件泄漏现象。
当管道遇热膨胀时，管道的前端受到的冲击力，通过管道自身平衡该冲击力。 与管件主体的结合可以有以下这些应用：
参照图 10、 11、 12， 所示的结构为内牙式三通型管道连接件， 其中一个内牙 式接口与接入管道连接，另外两个接口与铝塑管等管道连接，能够有效防止泄漏。
参照图 13、 14、 15， 所示的结构为内牙式弯头管道连接件， 其中一个内牙式 接口与接入管道连接， 另一个接口与铝塑管等管道连接， 能够有效防止泄漏。
参照图 16、 17、 18， 所示的结构为内牙直接型管道连接件， 其中一个内牙式 接口与接入管道连接， 另一个接口与铝塑管等管道连接， 能够有效防止泄漏。
参照图 19、 20、 21 , 所示的结构为三通管道连接件， 三个接口均与铝塑管等 管道连接， 能够有效防止泄漏。
参照图 22、 23、 24， 所示的结构为弯头管道连接件， 两个接口均与铝塑管等 管道连接， 能够有效防止泄漏。
参照图 25、 26、 27， 所示的结构为外牙式三通型管道连接件， 其中一个外牙 式接口与接入管道连接，另外两个接口与铝塑管等管道连接，能够有效防止泄漏。
参照图 28、 29、 30， 所示的结构为外牙式弯头管道连接件， 其中一个外牙式 接口与接入管道连接， 另一个接口与铝塑管等管道连接， 能够有效防止泄漏。
参照图 31、 32、 33， 所示的结构为二通管道连接件， 两个接口与铝塑管等管 道连接， 能够有效防止泄漏。
参照图 34、 35、 35， 所示的结构为外牙式二通管道连接件， 其中一个外牙式 接口与接入管道连接， 另一个接口与铝塑管等管道连接， 能够有效防止泄漏。
参照图 37、 38、 39， 所示的结构为另一种三通管道连接件， 三个接口均与铝 塑管等管道连接， 能够有效防止泄漏。
图 40是内锥体的内径比管道的管径小的结构示意图，该管道连接件中，其内 锥体的内径小， 与现有技术中的大小类似， 但是， 由于采用了该结构， 能够有效 防止泄漏。
图 41是将结构应用到阀门中的结构示意图，将阀门中与管道连接侧的结构也 进行同样的设计， 能够保证阀门与管道连接处不发生泄漏。

Claims

权 利 要 求 书
1、一种管道连接件， 包括压紧螺母， 所述压紧螺母的内腔为供管道穿过的安装通 道， 压紧螺母的内侧设有连接段，所述连接段与管件主体密封连接，其特征在于: 所述安装通道的外侧呈与管道匹配的圆柱形， 所述安装通道的内侧设有锥形段， 所述锥形段的孔径从内侧到外侧由大变小； 所述管道连接件还包括用以伸入胀开 的管道端部的内锥体， 所述内锥体的内腔为水流通道， 所述内锥体的外径从内侧 到外侧由大变小， 所述内锥体位于所述锥形段内。
2、如权利要求 1所述的管道连接件， 其特征在于： 所述内锥体内侧端的外壁设有 用以供管道的前端压接的下凹槽。
3、如权利要求 1或 2所述的管道连接件， 其特征在于： 所述内锥体的外壁设有径 向齿。
4、如权利要求 1或 2所述的管道连接件， 其特征在于： 所述水流通道的孔径与所 述管道的孔径相等。
5、如权利要求 1或 2所述的管道连接件， 其特征在于： 所述安装通道的外侧设有 附加内螺纹段， 所述管道连接件还包括用以防止外侧泄露的密封螺母， 所述密封 螺母上设有外螺纹， 所述密封螺母与所述附加内螺纹段连接。
6、如权利要求 3所述的管道连接件， 其特征在于： 所述安装通道的外侧设有附加 内螺纹段， 所述管道连接件还包括用以防止外侧泄露的密封螺母， 所述密封螺母 上设有外螺纹， 所述密封螺母与所述附加内螺纹段连接。
7、如权利要求 6所述的管道连接件， 其特征在于： 所述密封螺母与所述附加内螺 纹段密封连接。
8、 如权利要求 1或 2所述的管道连接件， 其特征在于： 所述内锥体的锥度角为 8-10° 。
9、 如权利要求 1或 2所述的管道连接件， 其特征在于： 所述连接段为外螺纹段， 所述锥形段位于所述外螺纹段内，管件主体上的内螺纹段安装在所述外螺纹段上。
10、如权利要求 1或 2所述的管道连接件， 其特征在于： 所述连接段为内螺纹段， 所述内螺纹段与所述锥形段相接，管件主体上的外螺纹段安装在所述内螺纹段上。
PCT/CN2010/079225 2009-12-08 2010-11-29 管道连接件 WO2011069417A1 (zh)

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