CN203797184U - Pipe connecting component structure - Google Patents

Abstract

The utility model relates to a structure of a pipeline connector, in particular to a structure of a pipeline connector suitable for a shape memory alloy pipeline joint. It includes a connected pipe, a rubber backing ring and a shape memory alloy pipe joint, and the outside of the connected pipe and the inside of the shape memory alloy pipe joint are respectively provided with an outer interface strengthening layer and an inner interface strengthening layer; the outer surface of the outer interface strengthening layer A rubber backing ring, an insulating layer, and a shape memory alloy pipe joint with an internal interface strengthening layer on the inner side are also provided in sequence. The utility model can effectively prevent the original battery reaction between the shape memory alloy and the steel pipe, not only achieves the improvement of the sealing performance between the connected pipe and the shape memory alloy pipe joint, but also meets the necessary ductility requirements during temperature deformation and earthquake , with better economic and social benefits.

Description

A structure of a pipe connector

technical field

The utility model relates to a structure of a pipeline connector, in particular to a structure of a pipeline connector suitable for a shape memory alloy pipeline joint.

Background technique

At present, pipeline transportation has become an important form of material transportation and plays an irreplaceable role in the national economy. However, leakage accidents of the pipeline structure often occur due to various reasons. Once the pipeline structure fails, it will bring huge economic losses and casualties. Research shows that most of the pipeline leakage accidents occur at the interface of the pipeline. The main reasons are as follows: firstly, the traditional oil and gas pipeline joints mostly adopt the welding method. The welded structure has its own advantages, but there have also been many damage accidents of the welded structure, which shows that this method itself has defects. , And welding works under open flame conditions, which itself has great potential safety hazards. Secondly, the corrosion problem of oil and gas pipeline facilities is shocking, especially the corrosion of pipeline welds working under high temperature and high pressure is the most serious. Therefore, to avoid or reduce the occurrence of pipeline transportation accidents, not only normal maintenance and repairs are necessary, but also necessary measures must be taken at the important part of the pipeline structure - the pipeline interface, and a new pipeline connection method should be used to replace the original one. The connection method can effectively avoid economic loss.

Shape memory alloy (SMA), a functional material, can generate good driving force because of its shape memory effect (SME), and this driving performance can be used in the connection of pipelines. By controlling the temperature of the connecting piece, the SMA will undergo a certain phase change and lead to circumferential deformation, thereby effectively connecting the two parts of the pipeline to be connected together. Its FeMnSi-based SMA has attracted widespread attention because of its cheap raw materials, good mechanical properties, easy thermal processing, and wide phase transition hysteresis. In recent years, the use of cheap iron-based shape memory alloy pipe joints in oil pipelines and natural gas pipelines has become a research hotspot. However, the existing iron-based shape memory alloy pipe joints do not comprehensively consider the thermal insulation and sealing of the interface between the connected pipe and the shape memory alloy pipe joint, as well as the seismic performance of the connected pipe.

Contents of the invention

Aiming at the above-mentioned technical problems, the utility model provides a shape memory alloy-rubber backing ring composite pipe connector, which better solves the necessary ductility requirements during temperature deformation or earthquakes, and effectively prevents the shape memory alloy from forming between the steel pipe and the steel pipe. The galvanic battery reaction is generated in time, and the structure of a pipeline connector can not only ensure the fastening force of the pipeline joint, but also ensure that the internal anti-corrosion layer of the pipeline is not damaged.

In order to achieve the above object, the technical solution of the utility model to solve technical problems is:

A structure of a pipe connector, comprising a connected pipe, a rubber backing ring and a shape memory alloy pipe joint, and an outer interface strengthening layer and an inner interface strengthening layer are respectively provided on the outside of the connected pipe and the inside of the shape memory alloy pipe joint; The exterior of the external interface strengthening layer is further provided with a rubber backing ring, an insulation layer and a shape memory alloy pipe joint with an internal interface strengthening layer on its inner side.

The outer interface strengthening layer and the inner interface strengthening layer are epoxy resin adhesive layers.

The thermal insulation layer is an inorganic fiber layer.

Compared with the prior art, the utility model has the following advantages and effects: the utility model adopts epoxy resin as an interface strengthening layer on the outside of the connected pipeline and the inside of the shape memory alloy pipeline joint, so the sealing performance of the connected pipeline, Both the pressure resistance and the pull-out resistance have been better improved; and the addition of the insulation layer can ensure that the anti-corrosion layer inside the pipe will not be damaged while the shape memory alloy pipe joint is heated; the setting of the rubber gasket ring It can not only prevent the galvanic reaction of two different metal materials, thereby reducing the corrosion rate of metal pipes, but also improve the sealing performance between the connected pipe and the shape memory alloy pipe joint, and meet the necessary ductility during temperature deformation and earthquake Requirements, with better economic and social benefits.

Description of drawings

Fig. 1 is a three-dimensional cross-sectional schematic diagram of the structure of a pipeline connector of the present invention.

Fig. 2 is a cross-sectional structural schematic diagram of Fig. 1 of the present utility model.

In the figure: internal interface reinforcement layer 1, shape memory alloy pipe joint 2, insulation layer 3, rubber gasket 4, connected pipe 5, and external interface reinforcement layer 6.

Detailed ways

The utility model will be further described in detail below in conjunction with specific embodiments, but the protection scope of the utility model is not limited by the specific embodiments, and the claims shall prevail. In addition, on the premise of not violating the technical solution of the utility model, any modification or change made to the utility model that is easily realized by those skilled in the art will fall within the scope of claims of the utility model.

Example 1:

The structure of a pipe connector as shown in Figures 1 and 2 includes a connected pipe, a rubber gasket and a shape memory alloy pipe joint, and the outside of the connected pipe 5 and the inside of the shape memory alloy pipe joint are respectively equipped with external interface strengthening layer 6 and inner interface strengthening layer 1; the outside of the outer interface strengthening layer 6 is further provided with a rubber backing ring 4, an insulating layer 3 and a shape memory alloy pipe joint 2 with an inner interface strengthening layer 1 inside. The outer interface strengthening layer 6 and the inner interface strengthening layer 1 are epoxy resin adhesive layers, and the heat preservation layer 3 is an inorganic fiber layer.

When the utility model is specifically used:

First, the surface of the connected pipe 5 is polished, and then an epoxy resin adhesive layer is applied on the outside of the connected pipe 5 and the inside of the shape memory alloy pipe joint 2, and the outer interface strengthening layer 6 and the inner interface strengthening layer 1 are formed after solidification; The outer interface strengthening layer 6 of the connected pipeline 5 is covered with a prefabricated rubber gasket 4, the inner diameter of the rubber gasket 4 is smaller than the outer diameter of the connected pipe; the outer side of the rubber gasket 4 is sprayed with an insulating layer of inorganic fibers; Put the outermost shape memory pipe joint 2 into the outside of the connected pipe 5; finally use a special heater to heat the outside of the shape memory alloy pipe joint 5, take off the heater after ten minutes of heat preservation, and the shape memory alloy pipe joint 2 because The shape memory effect is generated to shrink and deform, thereby hugging, fixing and connecting two steel pipes.

That is, the process of connecting two pipelines by using the shape memory alloy-rubber gasket composite pipeline connector is completed.

The utility model has the advantages of reasonable structure, easy processing, simple construction process, good effect and strong practicability, and is beneficial to popularization and application.

Claims (3)

1. A structure of a pipe connector, comprising: a connected pipe, a rubber gasket and a shape memory alloy pipe joint, characterized in that: the outer side of the connected pipe (5) and the inner side of the shape memory alloy pipe joint are respectively equipped with external interface strengthening Layer (6) and internal interface strengthening layer (1); the outer surface of the outer interface strengthening layer (6) is also provided with a rubber backing ring (4), thermal insulation layer (3) and an internal interface strengthening layer on its inner side (1) the shape memory alloy pipe joint (2). 2. The structure of a pipe connector according to claim 1, characterized in that: the outer interface strengthening layer (6) and the inner interface strengthening layer (1) are epoxy resin adhesive layers. 3. The structure of a pipe connector according to claim 1, characterized in that: the thermal insulation layer (3) is an inorganic fiber layer.