CN215908602U - Bimetal composite pipe - Google Patents

Abstract

The utility model discloses a bimetal composite pipe, wherein a connecting piece is assembled between a left base pipe, a right base pipe and an inner lining pipe, the connecting piece comprises an annular groove arranged at the inner side end of the inner lining pipe, annular overlaying layers are inserted in the annular groove, a closed contact structure is formed between the annular overlaying layers on the left side and the right side, a connecting ring is screwed between the end parts of the left base pipe and the right base pipe, and a closed reinforcing structure is fixedly assembled between the inner side ends of the outer walls of the left base pipe and the right base pipe; the adopted connecting piece is used for connecting two bimetal composite pipes, the sealing contact structure is utilized to improve the connection tightness, the sealing reinforcement structure is utilized to further enhance the interception sealing strength, and the material same as that of the lining pipe is used as an annular overlaying layer for corrosion protection; the adopted airtight reinforcing structure utilizes the bolts and the nuts as a fixing structure to fixedly connect the connecting pipe and the fixing rings on the two sides, and the airtightness is reinforced between the extrusion connecting ring and the end part of the base pipe and between the extrusion left end tooth socket and the extrusion right end tooth socket.

Description

Bimetal composite pipe

Technical Field

The utility model relates to the technical field of metal pipeline products, in particular to a bimetal composite pipe.

Background

In recent years, along with the development of economy, the energy demand is increased rapidly, the force for exploiting petroleum and natural gas is increased internationally and domestically, the oil and gas transmission pipeline is developed rapidly as an economic, safe and uninterrupted long-distance transmission tool for the petroleum and the natural gas, the traditional pipe is not suitable for the transmission of high-corrosion oil and gas gradually, and the cost is high due to the adoption of corrosion-resistant alloy, so that the bimetal composite pipe is produced at the same time. A bimetal composite steel pipe: the composite water supply pipe is a novel composite water supply pipe formed by strongly embedding a galvanized steel pipe or a welded pipe, a seamless steel pipe and a stainless steel pipe with thinner wall thickness, is a more ideal pipeline upgrading and updating product, retains the inherent advantages of two different materials, complements the inherent defects of the two different materials, and continues to use the traditional mature installation mode and process of the galvanized steel pipe, so that the composite water supply pipe is convenient, reliable, sanitary and safe in use. According to the difference of the material selection of the base pipe and the lining pipe and the improvement of the manufacturing process, the bimetal composite pipe produced by a plurality of manufacturers is widely applied to the industrial fields of oil fields, chemical industry, electric power and the like, the application range is more and more extensive, the economic, environmental and social benefits are more obvious, the bimetal composite pipe is composed of two metal pipes made of different materials, the base pipe is made of high-strength carbon steel pipe, the lining layer is made of corrosion-resistant alloy, the pipe layers are tightly combined through various deformation and connection technologies, the pipe not only has good strength and corrosion resistance, but also has low cost, and the bimetal composite pipe is widely accepted by domestic and foreign markets and is rapidly developed.

In the application process of the bimetal composite pipe, the connection of the pipe ends of the bimetal composite pipe is very important, the connection part is ensured to have higher strength and corrosion resistance, the connection part cannot generate a gap so that corrosive oil gas is contacted with a base pipe, the leakage of a conveying pipeline caused by the corrosion of the pipe end connection part is prevented, and the defect of the airtightness of the connection of the pipe ends of the bimetal composite pipe in the prior art is overcome; meanwhile, in the process of connecting the ends of the bimetal composite pipes, the complete alignment of the ends of the bimetal composite pipes is ensured to be troublesome, and in order to solve the problems, the bimetal composite pipes are provided.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a bimetal composite pipe, so as to solve the problems mentioned in the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a bimetal composite pipe, includes parent tube and interior bushing pipe, the parent tube inner wall is equipped with interior bushing pipe, controls be equipped with the connecting piece between parent tube and the interior bushing pipe, the connecting piece is including seting up the ring channel of interior bushing pipe medial extremity, it has cyclic annular surfacing layer to peg graft in the ring channel, forms airtight contact structure between the cyclic annular surfacing layer of the left and right sides, the left and right sides the spiro union has the go-between the parent tube tip, controls fixed being equipped with airtight reinforced structure between the parent tube outer wall medial extremity.

Preferably, the closed contact structure comprises a left end tooth socket arranged at the inner side end of the annular surfacing layer, a right end tooth socket arranged at the inner side end of the annular surfacing layer, and the left end tooth socket and the right end tooth socket are meshed with each other.

Preferably, the closed reinforcing structure comprises a fixing ring fixedly assembled at the inner side ends of the outer walls of the left base pipe and the right base pipe, a connecting pipe is sleeved between the outer walls of the left base pipe and the right base pipe, and a bolt connection fixing structure is assembled between the left end part and the right end part of the connecting pipe and the fixing ring at the same side.

Preferably, the spiro union fixed knot constructs including integrated into one piece in the outside go-between of solid fixed ring outer wall, the equal integrated into one piece in the connecting pipe outer wall left and right sides has inboard go-between, outside go-between and homonymy the inboard go-between closely laminates, outside go-between and homonymy evenly fixedly connected with bolt, nut between the inboard go-between.

Preferably, an annular clamping groove is formed between the opposite surfaces of the outer connecting ring and the inner connecting ring on the same side, a rubber ring is clamped between the outer connecting ring and the inner connecting ring on the same side, the left side wall and the right side wall of the rubber ring are integrally formed with the rubber ring, and the rubber ring is inserted into the annular clamping groove.

Compared with the prior art, the utility model has the beneficial effects that:

(1) the connecting piece that the scheme adopted is used for connecting between two bimetal composite pipes, utilizes airtight contact structure to improve the leakproofness of connecting, utilizes airtight reinforced structure further to strengthen the interception airtight intensity, utilizes the material the same with interior bushing pipe as cyclic annular build-up welding layer, carries out corrosion protection.

(2) The airtight contact structure that the scheme adopted utilizes the meshing between left-end tooth's socket and the right-end tooth's socket, improves the leakproofness of contact.

(3) The airtight reinforced structure that the scheme adopted utilizes bolt, nut as fixed knot to construct, connects fixedly to the solid fixed ring of connecting pipe and both sides, between extrusion go-between and parent tube tip, between extrusion left end tooth's socket and the right-hand member tooth's socket, carries out the seal and consolidates.

(4) The rubber ring is clamped between the screw connection fixing structures adopted by the scheme, and the airtightness is enhanced by the rubber ring between the rubber rings.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic view of the structure at A in FIG. 2 according to the present invention.

In the figure: the welding structure comprises a base pipe 1, an inner lining pipe 2, a connecting piece 3, a ring groove 31, an annular surfacing layer 32, a sealed contact structure 33, a left end tooth groove 331, a right end tooth groove 332, a connecting ring 34, a sealed reinforcing structure 35, a connecting pipe 351, a fixing ring 352, a screwed connection structure 353, an outer side connecting ring 3531, an inner side connecting ring 3532, a bolt 3533, a nut, an annular clamping groove 3534 and a rubber ring 3535.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a bimetal composite pipe comprises a base pipe 1 and an inner lining pipe 2, wherein the inner lining pipe 2 is arranged on the inner wall of the base pipe 1, a connecting piece 3 is assembled between a left base pipe 1 and a right base pipe 2, the connecting piece 3 comprises an annular groove 31 arranged at the inner side end part of the inner lining pipe 2, an annular overlaying layer 32 is inserted in the annular groove 31, a closed contact structure 33 is formed between the annular overlaying layers 32 on the left side and the right side, a connecting ring 34 is screwed between the end parts of the base pipe 1 on the left side and the right side, and a closed reinforcing structure 35 is fixedly assembled between the inner side ends of the outer wall of the left base pipe 1 and the outer wall of the right base pipe 1; the outer base pipe 1 is responsible for the effect of pressure-bearing and pipeline rigid support, and the inside lining 2 pipe bears effects such as corrosion-resistant, stand wear and tear, connects bimetal composite pipe tip through connecting piece 3 to guarantee the seal of junction.

The adopted connecting piece 3 is used for connecting two bimetal composite pipes, the sealing contact structure 33 is utilized to improve the connection tightness, the sealing reinforcement structure 35 is utilized to further enhance the interception sealing strength, and the annular overlaying layer 32 made of the same material as the lining pipe 2 is utilized to carry out anti-corrosion protection.

Specifically, the close contact structure 33 includes a left end tooth space 331 opened at the inner end of the left annular weld overlay 32, a right end tooth space 332 opened at the inner end of the right annular weld overlay 32, and the left end tooth space 331 and the right end tooth space 332 are engaged with each other; the adopted airtight contact structure improves the contact airtightness by utilizing the meshing between the left end tooth groove 331 and the right end tooth groove 332.

Specifically, the closed reinforcement structure 35 comprises a fixing ring 352 fixedly assembled at the inner side ends of the outer walls of the left and right base pipes 1, a connecting pipe 351 is sleeved between the outer walls of the left and right base pipes 1, and a bolt connection fixing structure 353 is assembled between the left and right end parts of the connecting pipe 351 and the fixing ring 352 at the same side; adopt spiro union fixed knot structure 353 to carry out fixed connection between connecting pipe 351 and the homonymy solid fixed ring 352, connecting pipe 351 shelters from the protection to two bimetal composite pipe junctions.

Specifically, the bolt-on fixing structure 353 includes an outer connecting ring 3531 integrally formed on the outer wall of the fixing ring 352, inner connecting rings 3532 are integrally formed on both left and right sides of the outer wall of the connecting tube 351, the outer connecting ring 3531 is tightly attached to the inner connecting ring 3532 on the same side, and bolts and nuts 3533 are uniformly and fixedly connected between the outer connecting ring 3531 and the inner connecting ring 3532 on the same side; the connecting pipe 351 and the fixing rings 352 on both sides are connected and fixed by the screw-fastening structure 353 using a bolt and a nut 3533 as a fixing structure, and the connection ring 34 and the end portion of the base pipe 1 are pressed and pressed between the left end tooth groove 331 and the right end tooth groove 332 to reinforce the sealing property.

Specifically, an annular clamping groove 3534 is formed between the opposite surfaces of the outer connecting ring 3531 and the inner connecting ring 3532 on the same side, a rubber ring 3535 is clamped between the outer connecting ring 3531 and the inner connecting ring 3532 on the same side, rubber rings are integrally formed on the left side wall and the right side wall of the rubber ring 3535, and the rubber rings are inserted into the corresponding annular clamping grooves 3534; a rubber ring 3535 is clamped between the screw fixing structures 353, and the tightness is enhanced by the rubber ring 3535.

The working principle is as follows: the connecting piece 3 is used for connecting two bimetal composite pipes, the sealing contact structure 33 is used for improving the connection tightness, the sealing reinforcement structure 35 is used for further enhancing the interception sealing strength, and the annular overlaying layer 32 made of the same material as the lining pipe 2 is used for corrosion protection;

the adopted closed contact structure improves the contact tightness by utilizing the meshing between the left end tooth groove 331 and the right end tooth groove 332; the connecting pipe 351 and the fixing ring 352 on the same side are fixedly connected by adopting a bolt connection fixing structure 353, and the connecting pipe 351 shields the joint of the two bimetal composite pipes; the connecting pipe 351 and the fixing rings 352 on the two sides are connected and fixed by a bolt and a nut 3533 through a bolt and bolt fixing structure 353 as a fixing structure, the connecting ring 34 and the end part of the base pipe 1 are extruded, and the left end tooth socket 331 and the right end tooth socket 332 are extruded to carry out airtight reinforcement; a rubber ring 3535 is clamped between the screw fixing structures 353, and the tightness is enhanced by the rubber ring 3535.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The standard parts used in the utility model can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as mature bolts, rivets, welding and the like in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1. The utility model provides a bimetal composite pipe, includes base tube (1) and interior bushing pipe (2), base tube (1) inner wall is equipped with interior bushing pipe (2), and its characterized in that controls be equipped with connecting piece (3) between base tube (1) and interior bushing pipe (2), connecting piece (3) are including offering ring channel (31) of interior bushing pipe (2) medial extremity portion, it has cyclic annular build-up layer (32) to peg graft in ring channel (31), forms airtight contact structure (33) between the cyclic annular build-up layer (32) of the left and right sides, controls both sides the spiro union has go-between base tube (1) tip go-between (34), controls fixed being equipped with airtight reinforced structure (35) between base tube (1) outer wall medial extremity.

2. The bimetallic composite tube of claim 1, wherein: the airtight contact structure (33) comprises a left end tooth groove (331) arranged at the inner side end of the annular surfacing layer (32), a right end tooth groove (332) is arranged at the inner side end of the annular surfacing layer (32), and the left end tooth groove (331) and the right end tooth groove (332) are meshed with each other.

3. The bimetallic composite tube of claim 1, wherein: airtight reinforced structure (35) including fixed assembly about base pipe (1) outer wall medial end fixed ring (352), about the base pipe (1) outer wall between cup joint connecting pipe (351), tip and homonymy are controlled in connecting pipe (351) be equipped with spiro union fixed knot structure (353) between fixed ring (352).

4. The bimetallic composite tube of claim 3, wherein: spiro union fixed knot constructs (353) including integrated into one piece in outside go-between (3531) of solid fixed ring (352) outer wall, the equal integrated into one piece in the connecting pipe (351) outer wall left and right sides has inboard go-between (3532), outside go-between (3531) and homonymy inboard go-between (3532) closely laminate, outside go-between (3531) and homonymy even fixedly connected with bolt, nut (3533) between inboard go-between (3532).

5. The bimetallic composite tube of claim 4, wherein: outside connecting ring (3531) and homonymy seted up ring slot (3534) between inboard connecting ring (3532) the opposite face, outside connecting ring (3531) and homonymy centre gripping has rubber circle (3535) between inboard connecting ring (3532), lateral wall integrated into one piece has the rubber ring about rubber circle (3535), and the rubber ring peg graft in corresponding in ring slot (3534).

Images