WO2021197405A1 - 金属塑料复合管端面和端口双增强双密封装置及制造方法 - Google Patents

金属塑料复合管端面和端口双增强双密封装置及制造方法 Download PDF

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WO2021197405A1
WO2021197405A1 PCT/CN2021/084850 CN2021084850W WO2021197405A1 WO 2021197405 A1 WO2021197405 A1 WO 2021197405A1 CN 2021084850 W CN2021084850 W CN 2021084850W WO 2021197405 A1 WO2021197405 A1 WO 2021197405A1
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WIPO (PCT)
Prior art keywords
metal
ring
plastic composite
composite pipe
reinforcement ring
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PCT/CN2021/084850
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English (en)
French (fr)
Inventor
肖和飞
尹希伟
张新爱
罗安明
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湖南振辉管业有限公司
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Publication of WO2021197405A1 publication Critical patent/WO2021197405A1/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
    • F16L9/00—Rigid pipes
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/562—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using extra joining elements, i.e. which are not integral with the parts to be joined
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/021—Sealings between relatively-stationary surfaces with elastic packing
    • F16J15/022—Sealings between relatively-stationary surfaces with elastic packing characterised by structure or material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2023/00—Tubular articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints

Definitions

  • the invention relates to the technical field of metal composite pipe structures, in particular to a metal-plastic composite pipe end surface and port double-reinforced double-sealing device and a manufacturing method.
  • the metal-plastic composite pipe has the characteristics of good mechanical properties, sanitation and environmental protection, low energy consumption, high water delivery efficiency, and low operating cost. It also has high strength of metal pipes, not easy to deform, and plastic pipes are not rusty, resistant to acid and alkali corrosion, etc. Advantages, it is widely used in water supply, drainage, sewage, chemical and other fields.
  • the metal-plastic composite pipe includes a metal pipe and a plastic layer. The end surface of the existing metal-plastic composite pipe has not been treated. During use, the end surface of the pipe is immersed in water for a long time, and it is affected by the tension of the water and the change of the environmental temperature. The pipe and the plastic layer will peel off slowly.
  • the metal pipe After the metal pipe and the plastic layer are separated, the metal pipe is in direct contact with water and causes the metal pipe to rust, which further aggravates the peeling of the metal pipe and the plastic layer of the metal-plastic composite pipe, and this affects It will gradually advance from the pipe end to the inside of the pipe body until the metal pipe is completely separated from the plastic layer.
  • direct contact between the metal pipe and water will cause serious water pollution, accelerate the corrosion of the pipe, and affect the service life of the pipe; on the other hand, the plastic layer will separate The metal pipe will block the pipe and affect the normal water supply of the pipe.
  • CN201910683558.7 discloses a metal-plastic composite pipe port reinforced end face sealing device and a manufacturing method thereof, which solves the problem of peeling and delamination of the metal layer and the plastic layer that occurs when the end face of the metal-plastic composite pipe is in contact with water under normal conditions
  • the metal reinforcement ring is prone to slippage under the action of hoisting or other external forces, which will cause the seal to fail.
  • the technical problem to be solved by the present invention is to overcome the above-mentioned defects in the prior art and provide a metal-plastic composite pipe end surface and port double-reinforced double-sealing device and a manufacturing method.
  • a metal-plastic composite pipe end face and port double-reinforced double-sealing device comprising a metal-plastic composite pipe body with end faces and ports, a metal reinforcement ring and a sealing ring, and is characterized by :
  • the metal reinforcement ring includes a metal reinforcement ring body and a flange set at one end of the metal reinforcement ring body.
  • the sealing ring is compressed between the metal reinforcement ring and the metal plastic composite pipe body; the sealing ring is tightly attached to The outer wall of the metal reinforcement ring is tightly attached to the metal plastic composite pipe body; the metal reinforcement ring is not in contact with the metal plastic composite pipe body.
  • the sealing ring is wrapped on the end surface of the metal-plastic composite pipe body, that is, the sealing ring is pressed against the outer end surface and part of the inner circular end surface of the metal-plastic composite pipe body by the metal reinforcement ring.
  • the flanging section is a straight edge perpendicular to the section of the metal reinforcement ring body, and the two form an "L"-like shape.
  • the height of the flange at the outer end of the metal reinforcement ring is consistent with the wall thickness of the end surface of the metal-plastic composite pipe.
  • the width of the long side of the seal ring section is ⁇ the width of the metal reinforcement ring body, and the width of the short side of the seal ring section is the same as the flanging width at one end of the metal reinforcement ring.
  • the width of the metal reinforcement ring body is greater than or equal to 5 mm, and the thickness of the metal reinforcement ring body is greater than or equal to 0.5 mm.
  • the sealing ring is a rubber sealing ring.
  • the metal reinforcement ring is a stainless steel reinforcement ring.
  • the manufacturing method of the double-reinforced double-sealing device for the end face and port of the metal-plastic composite pipe of the present invention includes the following steps:
  • the metal reinforcement ring is longitudinally squeezed into the metal-plastic composite pipe by pressing the flanging at one end of the metal reinforcement ring through the die of the extrusion equipment, and the metal reinforcement ring is squeezed inwardly through the die tooling ring while squeezing in the radial direction. Press to make the metal reinforcement ring tightly stick to the inner wall at the port of the metal plastic composite pipe, and tightly wrap the sealing ring between the metal reinforcement ring and the metal plastic composite pipe.
  • the manufacturing method of the metal reinforcement ring includes the following steps:
  • the metal-plastic composite pipe end surface and port double-reinforced double-sealing device of the present invention adopts a metal reinforcement ring and a sealing ring to double seal the metal-plastic composite pipe end surface and port, which greatly increases the metal reinforcement ring and the metal-plastic composite pipe.
  • the frictional resistance of the metal reinforcement ring solves the technical problem that the metal reinforcement ring is susceptible to slippage due to external forces, and eliminates the problem of seal failure caused by the metal reinforcement ring slippage.
  • the metal-plastic composite pipe end surface and port double-reinforced double-sealing device of the present invention eliminates the technical problem that the sealing effect is difficult to guarantee due to the movement of the sealing ring during the extrusion process of the traditional sealing ring expansion ring.
  • the metal-plastic composite pipe end face and port double-reinforced double-sealing device of the present invention makes the inner lining and the metal reinforcement ring of the metal-plastic composite pipe port contact the sealing ring, which solves the problem of the metal reinforcement ring in the metal-plastic composite pipe hoisting and transportation , In the process of storage, the metal reinforcement ring and the sealing ring loose or fall off due to the small friction resistance between the metal reinforcement ring and the inner lining, which leads to technical problems such as poor sealing effect or sealing failure.
  • the metal-plastic composite pipe end face and port double-reinforced double-sealing device of the present invention effectively solves the metal reinforcement caused by the metal reinforcement ring slipping due to the metal reinforcement ring and the inner lining expansion joint, and insufficient contact Technical problems such as the poor sealing effect of the ring on the metal-plastic composite pipe or the failure of the enhanced sealing.
  • the metal-plastic composite pipe end surface and port double-reinforced double sealing device of the present invention realizes the effective sealing of the end surface of the metal-plastic composite pipe by the sealing ring, and completely solves the problem of the metal pipe and the inner lining layering caused by the end surface water seepage of the metal-plastic composite pipe. technical problem.
  • a sealing ring is added between the metal-plastic composite pipe and the metal reinforcement ring, so that the inner lining of the metal-plastic composite pipe and the metal reinforcement ring are separated from each other.
  • the contact becomes a flexible contact, and the resilience generated by the sealing ring after the expansion ring makes the expansion joint of the metal reinforcement ring stronger, the friction resistance is greater, and the sealing effect is better.
  • the metal-plastic composite pipe end face and port double-reinforced double-sealing device of the present invention solves the technical problem of loosening and falling off of the metal reinforcement ring caused by the elastic contraction of the metal reinforcement ring during the expansion of the metal-plastic composite pipe.
  • the manufacturing method of the metal-plastic composite pipe end face and port double-reinforced double-sealing device adopted by the present invention is simple in process, simple in required equipment, and low in production cost.
  • Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention.
  • Fig. 2 is an enlarged schematic diagram of the structure of the embodiment 1A shown in Fig. 1;
  • FIG. 3 is a schematic diagram of the structure of the sealing ring sleeved on the metal reinforcement ring in the embodiment 1 shown in FIG. 1;
  • Figure 4 is a schematic structural diagram of Embodiment 2 of the present invention.
  • Fig. 5 is an enlarged schematic diagram of the structure of embodiment 2B shown in Fig. 4.
  • Metal reinforcement ring 1-1. Metal reinforcement ring body; 1-2. Flanging; 2. Seal ring; 3. Metal plastic composite pipe body; 3-1. Port; 3-2. End surface.
  • the metal-plastic composite pipe of this embodiment is a socket-type composite pipe.
  • This embodiment includes a metal-plastic composite pipe body 3 with a port 3-1 and an end surface 3-2, and a metal reinforcing ring 1 and the sealing ring 2.
  • the metal reinforcement ring 1 includes a metal reinforcement ring body 1-1 and a flange 1-2 provided at one end of the metal reinforcement ring body 1-1.
  • the cross-sectional profile shape of the metal reinforcement ring 1 and the sealing ring 2 The cross-sectional contour shape of the sealing ring 2 is the same, and the sealing ring 2 is sleeved on the outer wall of the metal reinforcement ring 1 and is located between the metal reinforcement ring 1 and the metal-plastic composite pipe body 3.
  • the sealing ring 2 is wrapped on the end surface of the metal-plastic composite pipe body 3, that is, the sealing ring 2 is pressed against the outer end surface and part of the inner circular end surface of the metal-plastic composite pipe body 3 by the metal reinforcement ring 1, so as to achieve a double seal.
  • This can increase the friction between the sealing ring 2 and the metal-plastic composite pipe body 3, the sealing ring 2 and the metal reinforcement ring 1.
  • the sealing ring 2 makes the metal-plastic composite pipe body 3 and the metal reinforcing ring 1 have no gap, avoiding seal failure caused by gas filling the gap.
  • the seal ring 2 is deformable, after being compressed, the end surface of the seal ring 2 forms a convex semicircular ring body, and the convex semicircular ring body protrudes from the end surface of the metal reinforcement ring 1 to strengthen The airtightness.
  • the cross section of the flanging 1-2 is a straight edge perpendicular to the cross section of the metal reinforcing ring body 1-1, and the metal reinforcing ring 1 is bent once to form the flanging, that is, the overall longitudinal section of the metal reinforcing ring 1 is It is similar to an "L" shape to match the shape of the end surface of the metal-plastic composite pipe body 3.
  • the height of the flange 1-2 at the outer end of the metal reinforcement ring 1 is the same as the wall thickness of the end surface 3-2 of the metal-plastic composite pipe. In other embodiments, it may be different. In fact, the end surface of the flange 1-2 should be as close as possible to the end surface of the metal-plastic composite pipe 3-2; if the end surface of the metal-plastic composite pipe 3-2 is provided with a chamfer, the flange 1-2 The end face and the chamfered end should be as flush as possible.
  • the width of the metal reinforcement ring body 1-1 is greater than or equal to 5 mm, and the thickness of the metal reinforcement ring body 1-1 is greater than or equal to 0.5 mm.
  • the width and thickness of the metal reinforcement ring body 1-1 are adjusted to match the wall thickness and inner diameter of the metal-plastic composite pipe body 3. If the wall thickness and inner diameter of the metal-plastic composite pipe body 3 are large, the metal reinforcement ring body 1-1 is increased. The width and thickness.
  • the metal reinforcement ring 1 is preferably a stainless steel reinforcement ring. In other embodiments, materials that are not easy to rust and easy to be folded can also be used for production.
  • the seal ring 2 is made of rubber, and materials with high hardness, strong elasticity, and high friction are preferably used.
  • a texture structure can be added on the surface of the seal ring 2 to increase the friction.
  • the manufacturing method of the metal-plastic composite pipe end surface and port double-reinforced double-sealing device specifically includes the following steps:
  • the flanging 1-2 at one end of the stainless steel reinforcement ring is pressed longitudinally by the extrusion equipment die to extrude the stainless steel reinforcement ring into the metal-plastic composite pipe, and the die tooling ring is used to squeeze inward while squeezing radially. Press to expand the ring so that the stainless steel reinforced ring is tightly attached to the inner wall of the metal plastic composite pipe port 3-1, and the sealing ring 2 is tightly wrapped between the stainless steel reinforced ring and the metal plastic composite pipe.
  • the metal-plastic composite pipe in this embodiment is a straight-tube composite pipe. Both ends of the straight-tube composite pipe are provided with sealing devices.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Gasket Seals (AREA)
  • Flanged Joints, Insulating Joints, And Other Joints (AREA)

Abstract

一种金属塑料复合管端面和端口双增强双密封装置，包括带有端面（3-2）和端口（3-1）的金属塑料复合管本体（3）、金属增强环（1）和密封环（2），金属增强环（1）包括金属增强环本体（1-1）和设置在金属增强环本体（1-1）一端的翻边（1-2），金属增强环（1）的截面轮廓形状与密封环（2）的截面轮廓形状相同，密封环（2）套在金属增强环（1）的外壁并位于金属增强环（1）与金属塑料复合管本体（3）之间。还涉及金属塑料复合管端面（3-2）和端口（3-1）双增强双密封装置的制造方法。其可同时实现对金属塑料复合管的端面（3-2）与端口（3-1）的双增强和双密封，杜绝金属塑料复合管端口面（3-2）与水直接接触，可以确保在金属塑料复合管长期通水的情况下，塑料内衬与金属管内壁不剥离、不开裂。

Description

金属塑料复合管端面和端口双增强双密封装置及制造方法 技术领域
本发明涉及金属复合管结构技术领域，具体涉及一种金属塑料复合管端面和端口双增强双密封装置及制造方法。
背景技术
金属塑料复合管因其具有机械性能好、卫生环保、能耗低、输水效率高、运行成本低等特点，兼有金属管强度高、不易变形与塑料管不生锈，耐酸碱腐蚀等优点，被广泛应用于给水、排水、排污、化工等领域。金属塑料复合管包括金属管和塑料层，现有的金属塑料复合管端面未作任何处理，使用过程中，管端面长期浸泡在水中，受水的张力与环境温度变化的影响，管端面的金属管与塑料层会缓慢发生剥离，金属管与塑料层分离后，造成金属管与水直接接触并引起金属管锈蚀，进一步加剧了金属塑料复合管的金属管与塑料层的剥离，并且这种影响会从管端逐步向管体内部推进，直至金属管与塑料层完全脱离，一方面金属管与水直接接触会造成水质严重污染，加速管道锈蚀，影响管道使用寿命；另一方面，塑料层脱离金属管后将堵塞管道，影响管道正常供水。
CN201910683558.7公开了一种金属塑料复合管端口增强端面密封装置及其制作方法，在一定程度上解决了正常情况下金属塑料复合管端面与水接触发生的的金属层与塑料层剥离分层问题，但经实际使用证明，由于金属增强环与塑料管接触面摩擦阻力小，在吊装或其他外力作用下，金属增强环易产生滑移，这会造成密封失效。
发明内容
本发明所要解决的技术问题是，克服上述现有技术存在的缺陷，提供一种金属塑料复合管端面和端口双增强双密封装置及制造方法。
本发明解决其技术问题采用的技术方案是：一种金属塑料复合管端面和端口双增强双密封装置，包括带有端面和端口的金属塑料复合管本体、金属增强环和密封环，其特征在于：所述金属增强环包括金属增强环本体和设置在金属增强环本体一端的翻边，所述密封环被压紧于金属增强环与金属塑料复合管本体之间；所述密封环贴紧于金属增强环外壁，所述密封 环贴紧于金属塑料复合管本体；所述金属增强环与金属塑料复合管本体不接触。
上述技术方案中，优选地，密封环包覆于金属塑料复合管本体的端面，即密封环被金属增强环压紧于金属塑料复合管本体外端面和部分内圆端面
上述技术方案中，优选地，所述翻边断面为垂直于金属增强环本体断面的直边，二者构成类“L”形。
上述技术方案中，优选地，所述金属增强环外端的翻边的高度与金属塑料复合管端面的壁厚一致。
上述技术方案中，优选地，所述密封环截面长边的宽度≤金属增强环本体的宽度，所述密封环截面短边的宽度与金属增强环一端的翻边宽度相同。
上述技术方案中，优选地，所述金属增强环本体的宽度≥5mm，金属增强环本体的厚度≥0.5mm。
上述技术方案中，优选地，所述密封环为橡胶密封环。
上述技术方案中，优选地，所述金属增强环为不锈钢增强环。
本发明金属塑料复合管端面和端口双增强双密封装置的制造方法，包括以下步骤：
S1、制作金属增强环和密封环；
S2、先将所述密封环套在金属增强环上，并紧贴所述金属增强环的外壁，再将所述金属增强环套在金属塑料复合管的端口内；或先将所述密封环套在金属塑料复合管的端口内，再将所述金属增强环套在密封环的内壁；
S3、最后通过挤压设备模具顶住所述的金属增强环一端的翻边纵向将所述的金属增强环向金属塑料复合管内挤压，在径向挤压的同时通过模具工装环向内挤压，使金属增强环紧紧地贴住金属塑料复合管端口处的内壁，将密封环紧紧包裹在金属增强环与金属塑料复合管之间。
上述技术方案中，优选地，所述金属增强环的制作方法，包括以下步骤：
1)不锈钢带长度裁剪；
2)翻边、卷圆；
3)焊接；
4)焊缝打磨。
与现有技术相比，本发明的有益效果是：
1、本发明金属塑料复合管端面和端口双增强双密封装置采用的金属增强环和密封环对金属塑料复合管端面和端口进行双密封的技术方案，大幅增加了金属增强环与金属塑料复合管的摩擦阻力，解决了金属增强环易受外力影响产生滑移的技术难题，杜绝了因金属增强环滑移造成密封失效问题。
2、本发明金属塑料复合管端面和端口双增强双密封装置杜绝了传统密封圈胀环挤压过程中密封圈移动导致密封效果难以保障的技术问题。
3、本发明的金属塑料复合管端面和端口双增强双密封装置，使金属塑料复合管端口的内衬和金属增强环均与密封环接触，解决了金属增强环在金属塑料复合管吊装、运输、贮存等过程中因金属增强环与内衬摩擦阻力小造成的金属增强环和密封圈松动、脱落而导致密封效果不佳或者密封失效等技术问题。
4、本发明金属塑料复合管端面和端口双增强双密封装置有效解决了金属塑料复合管因金属增强环与内衬胀接不紧固，接触不充分导致金属增强环滑移所造成的金属增强环对金属塑料复合管增强密封效果不佳或增强密封失效等技术问题。
5、本发明金属塑料复合管端面和端口双增强双密封装置，实现了密封环对金属塑料复合管端面的有效密封，彻底解决了金属塑料复合管因端面渗水造成金属管与内衬分层的技术问题。
6、本发明的金属塑料复合管端面和端口双增强双密封装置，因在金属塑料复合管与金属增强环之间增加了密封环，使金属塑料复合管的内衬与金属增强环之间的接触变成柔性接触，胀环后密封环产生的回弹力使金属增强环的胀接更牢固，摩擦阻力更大，密封效果更佳。
7、本发明的金属塑料复合管端面和端口双增强双密封装置，解决了金属塑料复合管胀环过程中因金属增强环的弹性回缩造成的金属增强环松动、脱落的技术问题。
8、本发明采用的金属塑料复合管端面和端口双增强双密封装置的制造方法工艺简单，所需设备简单，生产成本低。
附图说明
图1为本发明实施例1的结构示意图；
图2为图1所示实施例1A处结构放大示意图；
图3为图1所示实施例1中密封环套在金属增强环上的结构示意图；
图4为本发明实施例2的结构示意图；
图5为图4所示实施例2B处结构放大示意图。
图中标号说明：
1、金属增强环；1-1、金属增强环本体；1-2、翻边；2、密封环；3、金属塑料复合管本体；3-1、端口；3-2、端面。
具体实施方式
以下对本发明的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本发明，并不用于限制本发明。
实施例1
如图1至图3所示，本实施例的金属塑料复合管为承插式复合管，本实施例包括带有端口3-1和端面3-2的金属塑料复合管本体3、金属增强环1和密封环2，金属增强环1包括金属增强环本体1-1和设置在金属增强环本体1-1一端的翻边1-2，金属增强环1的截面轮廓形状与所述密封环2的截面轮廓形状相同，所述密封环2套在所述金属增强环1的外壁并位于金属增强环1与金属塑料复合管本体3之间。
本实施例中，密封环2包覆于金属塑料复合管本体3的端面，即密封环2被金属增强环1压紧于金属塑料复合管本体3外端面和部分内圆端面，达到双密封的效果，并能够增加密封环2与金属塑料复合管本体3、密封环2与金属增强环1之间的摩擦力。
本实施例中，安装后，密封环2使金属塑料复合管本体3与金属增强环1之间无缝隙，避免了因缝隙内充入气体等造成的密封失效。
本实施例中，密封环2因为有可变形性，压紧后，密封环2的端面形成凸起的半圆环体，凸起的半圆环体凸出于金属增强环1的端面，增强了密封性。
本实施例中，所述翻边1-2断面为垂直于金属增强环本体1-1断面的直边，金属增强环1通过折弯一次形成翻边，即金属增强环1整体的纵截面呈类“L”形，以配合金属塑料复合管本体3的端面形状。
本实施例中，所述金属增强环1外端的翻边1-2的高度与金属塑料复合管端面3-2的壁厚一致，其它实施例中，可以不一致。实际上翻边1-2的端面尽量与金属塑料复合管端面3-2外圆端面在一个面；如果金属塑料复合管端面3-2外圆端部设有倒角，则翻边1-2的端面与倒角的端部尽量平齐即可。
本实施例中，所述金属增强环本体1-1的宽度≥5mm，金属增强环本体1-1的厚度≥0.5mm。金属增强环本体1-1的宽度和厚度配合金属塑料复合管本体3的壁厚和内径来进行调整，金属塑料复合管本体3的壁厚和内径大，就增大金属增强环本体1-1的宽度和厚度。
本实施例中，所述金属增强环1优先采用为不锈钢增强环，其它实施例中也可以采用不易生锈、易折边加工的材料进行制作。
本实施例中，密封环2采用橡胶制成，优先采用硬度高、弹性强，并且摩擦力高的材料，可以在密封环2表面增设增加摩擦力的纹路结构。
本实施例中，所述金属塑料复合管端面和端口双增强双密封装置的制造方法，具体包括以下步骤：
S1、制作金属增强环1；测量金属塑料复合管的内径，计算比金属塑料复合管内径小7mm的不锈钢增强环周长，以计算的周长为长度剪裁不锈钢带，不锈钢带的宽度为60mm，厚度为1.4mm；然后将裁剪好的不锈钢带经翻边卷圆机翻边、卷圆；再通过焊接机焊接卷圆后的不锈钢环，并对焊缝进行打磨；
S2、在不锈钢增强环外壁涂敷软性胶水，然后将密封环2套在不锈钢增强环上，等到胶水固化后，密封环2便并紧贴在不锈钢增强环的外壁，最后将套有密封环2的不锈钢增强环套在金属塑料复合管的端口3-1内，不锈钢增强环的翻边紧贴金属塑料复合管的端面3-2；或先将所述密封环2套在金属塑料复合管的端口3-1内，密封环2紧贴在金属塑料复合管的端口3-1，再将涂敷好胶水的不锈钢增强环套在密封环2上。
S3、最后通过挤压设备模具顶住所述的不锈钢增强环一端的翻边1-2纵向将不锈钢增强环向金属塑料复合管内挤压，在径向挤压的同时通过模具工装环向内挤压进行胀环，使不锈钢增强环紧紧地贴住金属塑料复合管端口3-1处的内壁，将密封环2紧紧包裹在不锈钢增强环与金属塑料复合管之间。
实施例2：
如图4-5所示，本实施例中的金属塑料复合管为直管式复合管。直管式复合管的两端都设有密封装置。
上述实施案例只是本发明的较佳实施例，并非对本发明作任何形式上的限制。虽然本发明已以较佳实施例揭露如上，然而并非用以限定本发明。因此，凡是未脱离本发明技术方案的内容，依据本发明技术实质对以上实施例所做的任何简单修改、等同变化及修饰，均应落 在本发明技术方案保护的范围内。

Claims (10)

  1. 一种金属塑料复合管端面和端口双增强双密封装置，包括带有端面和端口的金属塑料复合管本体、金属增强环和密封环，其特征在于：所述金属增强环包括金属增强环本体和设置在金属增强环本体一端的翻边，所述密封环被压紧于金属增强环与金属塑料复合管本体之间；所述密封环贴紧于金属增强环外壁，所述密封环贴紧于金属塑料复合管本体；所述金属增强环与金属塑料复合管本体不接触。
  2. 根据权利要求1所述的金属塑料复合管端面和端口双增强双密封装置，其特征在于：所述翻边断面为垂直于金属增强环本体断面的直边。
  3. 根据权利要求1或2所述的金属塑料复合管端面和端口双增强双密封装置，其特征在于：所述金属增强环外端的翻边的高度与金属塑料复合管端面的壁厚一致。
  4. 根据权利要求1或2所述的金属塑料复合管端面和端口双增强双密封装置，其特征在于：所述密封环截面长边的宽度≤金属增强环本体的宽度，所述密封环截面短边的宽度与金属增强环一端的翻边宽度相同。
  5. 根据权利要求3所述的金属塑料复合管端面和端口双增强双密封装置，其特征在于：所述密封环截面长边的宽度≤金属增强环本体的宽度，所述密封环截面短边的宽度与金属增强环一端的翻边的宽度相同。
  6. 根据权利要求4所述的金属塑料复合管端面和端口双增强双密封装置，其特征在于：所述金属增强环本体的宽度≥5mm，金属增强环本体的厚度≥0.5mm。
  7. 根据权利要求1-6之一所述的金属塑料复合管端面和端口双增强双密封装置，其特征在于：所述密封环为橡胶密封环。
  8. 根据权利要求1-6之一所述的金属塑料复合管端面和端口双增强双密封装置，其特征在于：所述金属增强环为不锈钢增强环。
  9. 一种如权利要求1-8之一所述的金属塑料复合管端面和端口双增强双密封装置的制造方法，其特征在于：具体包括以下步骤：
    S1、制作金属增强环；
    S2、先将所述密封环套在不锈钢增强环上，并紧贴所述不锈钢增强环的外壁，再将所述不锈钢增强环套在金属塑料复合管的端口内；或先将所述密封环套在金属塑料复合管的端口内，再将所述不锈钢增强环套在密封环的内壁。
    S3、最后通过挤压设备模具顶住所述的金属增强环一端的翻边纵向将所述的金属增强环 向金属塑料复合管内挤压，在径向挤压的同时通过模具工装环向内挤压，使金属增强环紧紧地贴住金属塑料复合管端口处的内壁，将密封环紧紧包裹在金属增强环与金属塑料复合管之间。
  10. 根据权利要求9所述的金属塑料复合管端面和端口双增强双密封装置的制造方法，其特征在于：所述金属增强环的制作，其步骤如下：
    1)不锈钢带长度裁剪；
    2)翻边、卷圆；
    3)焊接；
    4)焊缝打磨。
PCT/CN2021/084850 2020-04-01 2021-04-01 金属塑料复合管端面和端口双增强双密封装置及制造方法 WO2021197405A1 (zh)

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