CN212178097U - Bimetal composite pipe with bonding interface and pipe end seal welding function - Google Patents
Bimetal composite pipe with bonding interface and pipe end seal welding function Download PDFInfo
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- CN212178097U CN212178097U CN202020622758.XU CN202020622758U CN212178097U CN 212178097 U CN212178097 U CN 212178097U CN 202020622758 U CN202020622758 U CN 202020622758U CN 212178097 U CN212178097 U CN 212178097U
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Abstract
The utility model discloses a bimetal composite pipe with bonding interface and pipe end seal weld, including the parent tube, set up in the parent tube and with the coaxial bushing pipe of parent tube and set up the fixed knot who is used for fixed bushing pipe position at the bushing pipe tip to construct. The utility model has the advantages that the welding grooves are arranged at the two ends of the base pipe; the length of the base pipe is smaller than that of the liner pipe, two ends of the liner pipe extend to the outer side of the base pipe, the welding groove and the pipe section of the liner pipe extending to the outer side of the base pipe jointly form a seal welding area, and the seal welding assembly is installed by utilizing the seal welding area, so that the stability of connection between the base pipe and the liner pipe can be ensured, and the base pipe and the liner pipe can be prevented from being damaged by welding work; meanwhile, the base pipe and the liner pipe are connected by the adhesive layer, so that the instability resistance of the bimetal composite pipe is improved.
Description
Technical Field
The utility model belongs to the technical field of bimetal composite pipe, especially, relate to a bimetal composite pipe with bonding interface and pipe end seal weld.
Background
In recent years, mechanical bimetal composite pipes have been widely used in industries such as petroleum, natural gas, chemical industry, municipal industry, buildings and the like due to excellent comprehensive performance and low price, and become novel corrosion-resistant materials with higher cost performance. However, some quality problems occur during the use process, and the main reasons of the quality problems are as follows: on one hand, because the bonding strength between the base linings is low, compared with a metallurgical composite pipe, the anti-instability performance of the composite pipe is poor, the lining is easy to be unstable due to temperature increase, sudden change of internal pressure or leakage of a lining layer in the service process of the composite pipe, the whole pipeline is stopped to be repaired, and large economic loss and maintenance cost are brought; on the other hand, the mechanical composite pipe with the end sealed and welded is adopted, the corrosion resistance of a sealing layer is not easy to guarantee due to the influence of the material of the base pipe, the end sealed and welded quality of the composite pipe is easy to cause corrosion perforation of the butt weld of the end, the leakage of a conveying medium is caused to pollute the environment, the shutdown and the rush repair of the whole pipeline are caused, and the larger economic loss and the maintenance cost are brought.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the present invention is to provide a bimetal composite pipe with a bonding interface and a sealed pipe end, wherein welding grooves are formed at both ends of the base pipe; the length of the base pipe is smaller than that of the liner pipe, two ends of the liner pipe extend to the outer side of the base pipe, the welding groove and a pipe section of the liner pipe extending to the outer side of the base pipe jointly form a seal welding area, and the seal welding assembly is installed by utilizing the seal welding area, so that the stability of connection between the base pipe and the liner pipe can be ensured, and the base pipe and the liner pipe can be prevented from being damaged by welding work; meanwhile, the base pipe and the liner pipe are connected by the adhesive layer, so that the instability resistance of the bimetal composite pipe is improved.
In order to solve the technical problem, the utility model discloses a technical scheme is: the utility model provides a bimetal composite pipe with bonding interface and pipe end seal weld which characterized in that: the device comprises a base pipe, a liner pipe which is arranged in the base pipe and is coaxial with the base pipe, and a fixing structure which is arranged at the end part of the liner pipe and is used for fixing the position of the liner pipe;
welding grooves are formed in two ends of the base pipe; the length of the base pipe is smaller than that of the liner pipe, two ends of the liner pipe extend to the outer side of the base pipe, and the welding groove and a pipe section of the liner pipe extending to the outer side of the base pipe jointly form a seal welding area; the base pipe is connected with the liner pipe through an adhesive layer;
the fixing structure comprises a surfacing component arranged between the base pipe and the liner pipe and distributed at the end part of the base pipe and a sealing and welding component arranged in the sealing and welding area and connected with the surfacing component; the seal welding assembly comprises seal welding layers which are oppositely arranged at two ends of the liner tube and used for connecting the base tube and the liner tube, the seal welding layers are arranged along the circumferential direction of the liner tube, and an annular glue-free area is arranged between the seal welding layers and the adhesive layer.
The bimetal composite pipe with the bonding interface and the pipe end seal welding is characterized in that: a connecting gap exists between the base pipe and the liner pipe, the annular glue-free areas are arranged at the end parts of the connecting gap, and the adhesive layer is arranged in the connecting gap and is arranged between the two annular glue-free areas.
The bimetal composite pipe with the bonding interface and the pipe end seal welding is characterized in that: the adhesive layer is of an annular structure, the adhesive layer is arranged along the length direction of the base pipe, the central axis of the adhesive layer coincides with the central axis of the base pipe, and the length of the adhesive layer is smaller than that of the base pipe.
The bimetal composite pipe with the bonding interface and the pipe end seal welding is characterized in that: the surfacing assembly comprises surfacing layers which are oppositely arranged on the inner side of the end part of the base pipe, the surfacing layers are of annular structures and are distributed along the circumferential direction of the base pipe, and the inner diameter of each surfacing layer is equal to that of the base pipe; and one side of the surfacing layer, which is close to the end part of the base pipe, is connected with the seal welding layer.
The bimetal composite pipe with the bonding interface and the pipe end seal welding is characterized in that: the inside of parent tube tip is seted up the annular surfacing groove that supplies the surfacing layer installation.
Compared with the prior art, the utility model has the following advantage:
1. the utility model, by arranging the base pipe, the liner pipe which is arranged in the base pipe and is coaxial with the base pipe and the fixing structure which is arranged at the end part of the liner pipe and is used for fixing the position of the liner pipe, forms the bimetal composite pipe which is provided with an adhesive interface and has a pipe end seal-welded joint, on one hand, the problem of lower bonding strength between the base pipes is solved; on the other hand, the welding quality between the base linings is ensured, and the service efficiency of the bimetal composite pipe is improved.
2. In the utility model, both ends of the base tube are provided with welding grooves; the length of the base pipe is smaller than that of the liner pipe, two ends of the liner pipe extend to the outer side of the base pipe, the welding groove and a pipe section of the liner pipe extending to the outer side of the base pipe jointly form a seal welding area, and the seal welding assembly is installed by utilizing the seal welding area, so that the stability of connection between the base pipe and the liner pipe can be ensured, and the base pipe and the liner pipe can be prevented from being damaged by welding work; meanwhile, the base pipe and the liner pipe are connected by the adhesive layer, so that the instability resistance of the bimetal composite pipe is improved.
3. The fixing structure comprises a surfacing component arranged between the base pipe and the liner pipe and arranged at the end part of the base pipe and a sealing component arranged in the sealing area and connected with the surfacing component, and the surfacing component and the sealing component can ensure the effective compounding of the base pipe and the end part of the liner pipe, thereby ensuring the welding construction quality of the bimetal composite pipe; meanwhile, the seal welding assembly is utilized to connect the pipe ends of the liner pipe and the base pipe, so that the production and manufacturing cost is reduced on one hand, and the market competitiveness of the bimetal composite pipe is improved on the other hand.
To sum up, the utility model is provided with welding grooves at both ends of the base tube; the length of the base pipe is smaller than that of the liner pipe, two ends of the liner pipe extend to the outer side of the base pipe, the welding groove and a pipe section of the liner pipe extending to the outer side of the base pipe jointly form a seal welding area, and the seal welding assembly is installed by utilizing the seal welding area, so that the stability of connection between the base pipe and the liner pipe can be ensured, and the base pipe and the liner pipe can be prevented from being damaged by welding work; meanwhile, the base pipe and the liner pipe are connected by the adhesive layer, so that the instability resistance of the bimetal composite pipe is improved.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Description of reference numerals:
1, a base pipe; 2, lining the pipe; 3-adhesive layer;
4-annular glue-free zone; 5, overlaying a welding layer; 6-sealing and welding layer.
Detailed Description
As shown in fig. 1, the present invention comprises a base pipe 1, a liner pipe 2 disposed in the base pipe 1 and coaxial with the base pipe 1, and a fixing structure disposed at an end of the liner pipe 2 for fixing the position of the liner pipe 2;
welding grooves are formed in two ends of the base tube 1; the length of the base pipe 1 is smaller than that of the liner pipe 2, two ends of the liner pipe 2 extend to the outer side of the base pipe 1, and the welding bevel and a pipe section of the liner pipe 2 extending to the outer side of the base pipe 1 jointly enclose a seal welding area; the base pipe 1 and the liner pipe 2 are connected through an adhesive layer 3;
the fixing structure comprises a surfacing component arranged between the base pipe 1 and the liner pipe 2 and distributed at the end part of the base pipe 1 and a sealing and welding component arranged in the sealing and welding area and connected with the surfacing component; the sealing and welding assembly comprises sealing and welding layers 6 which are oppositely arranged at two ends of the liner tube 2 and used for connecting the base tube 1 and the liner tube 2, wherein the sealing and welding layers 6 are distributed along the circumferential direction of the liner tube 2, and an annular glue-free area 4 is arranged between the sealing and welding layers 6 and the adhesive layer 3.
In practical use, the bimetal composite pipe with the bonding interface and the seal-welded pipe end is formed by arranging the base pipe 1, the liner pipe 2 which is arranged in the base pipe 1 and is coaxial with the base pipe 1 and the fixing structure which is arranged at the end part of the liner pipe 2 and is used for fixing the position of the liner pipe 2, so that the problem of low bonding strength between the base pipes is solved on one hand; on the other hand, the welding quality between the base linings is ensured, and the service efficiency of the bimetal composite pipe is improved.
Wherein both ends of the base tube 1 are provided with welding grooves; the length of the base pipe 1 is smaller than that of the liner pipe 2, two ends of the liner pipe 2 extend to the outer side of the base pipe 1, the welding groove and a pipe section of the liner pipe 2 extending to the outer side of the base pipe 1 jointly form a seal welding area, and the seal welding assembly is installed by using the seal welding area, so that the stability of connection between the base pipe 1 and the liner pipe 2 can be ensured, and the base pipe 1 and the liner pipe 2 can be prevented from being damaged by welding work; meanwhile, the base pipe 1 and the liner pipe 2 are connected by the adhesive layer 3, so that the instability resistance of the bimetal composite pipe is improved.
In addition, the fixing structure comprises a surfacing component arranged between the base pipe 1 and the liner pipe 2 and distributed at the end part of the base pipe 1 and a sealing and welding component arranged in the sealing and welding area and connected with the surfacing component, the surfacing component and the sealing and welding component can ensure effective compounding of the base pipe 1 and the pipe end of the liner pipe 2, and the welding construction quality of the bimetal composite pipe is ensured; meanwhile, the seal welding assembly is utilized to connect the pipe ends of the liner pipe 2 and the base pipe 1, so that the production and manufacturing cost is reduced on one hand, and the market competitiveness of the bimetal composite pipe is improved on the other hand.
As shown in fig. 1, the length L2 of the annular non-glue area 4 is smaller than the maximum length L1 of the weld overlay 5, so that the weld overlay 5 can extend above the glue layer 3, and effective combination of the weld overlay 5 and the liner tube 2 can be ensured.
In this embodiment, a connection gap exists between the base pipe 1 and the liner pipe 2, the annular non-adhesive region 4 is arranged at an end of the connection gap, and the adhesive layer 3 is arranged in the connection gap and is arranged between the two annular non-adhesive regions 4.
In practical use, the connecting gap is used for installing the adhesive layer 3; on the other hand, an annular glue-free area 4 can be formed, and the influence on welding is avoided.
In this embodiment, the adhesive layer 3 is an annular structure, the adhesive layer 3 is arranged along the length direction of the base pipe 1, the central axis of the adhesive layer 3 coincides with the central axis of the base pipe 1, and the length of the adhesive layer 3 is smaller than that of the base pipe 1.
As shown in fig. 1, the adhesive layer 3 functions to connect the base pipe 1 and the liner pipe 2; the length of the adhesive layer 3 is smaller than that of the base pipe 1, so that the annular adhesive-free area 4 can be reserved in the connecting gap, and subsequent welding is facilitated.
In the embodiment, the surfacing component comprises surfacing layers 5 which are oppositely arranged on the inner side of the end part of the base pipe 1, the surfacing layers 5 are of annular structures and are distributed along the circumferential direction of the base pipe 1, and the inner diameter of each surfacing layer 5 is equal to that of the base pipe 1; and one side of the surfacing layer 5, which is close to the end part of the base pipe 1, is connected with the surfacing layer 6.
In this embodiment, the inner side of the end of the base tube 1 is provided with an annular overlaying groove for installing the overlaying layer 5.
During actual use, the surfacing component and the seal welding component are combined to fix and connect the base pipe 1 and the liner pipe 2.
The utility model discloses during the use, at first install adhesive layer 3: an adhesive layer 3 is stuck on the outer surface of the middle part of the liner tube 2; then processing an annular overlaying groove: processing the annular overlaying welding grooves on the inner side walls at two ends of the base pipe 1; and then welding the overlaying layer 5: welding the surfacing layer 5 in the annular surfacing groove, wherein the first surfacing layer 5 is made of the same material as the liner tube 2, and turning the inner side surface of the surfacing layer 5 close to the central axis of the liner tube 2 to enable the inner side surface of the surfacing layer 5 to be flush with the inner side wall of the base tube 1; meanwhile, one side of the surfacing layer 5, which is close to the end of the base pipe 1, is connected with the surfacing layer 6; and (3) processing a welding groove: processing the welding groove along the circumferential direction of the pipe end of the base pipe 1; installing the liner tube 2 and carrying out semi-finished product processing: installing a liner tube 2 on the inner side of the base tube 1, wherein the length of the base tube 1 is less than that of the liner tube 2, two ends of the liner tube 2 extend to the outer side of the base tube 1, and the base tube 1 and the liner tube 2 are connected through an adhesive layer 3; carrying out composite treatment on the assembled base tube 1 and the assembled liner tube 2 by adopting an explosion or hydraulic composite method to obtain a semi-finished product; and finally installing a sealing welding layer 6: and welding a sealing layer 6 in the sealing area of the end of the semi-finished product, and polishing the sealing layer 6 to obtain the bimetal composite tube.
The above, only be the utility model discloses a preferred embodiment, it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.
Claims (5)
1. The utility model provides a bimetal composite pipe with bonding interface and pipe end seal weld which characterized in that: the device comprises a base pipe (1), a liner pipe (2) which is arranged in the base pipe (1) and is coaxial with the base pipe (1), and a fixing structure which is arranged at the end part of the liner pipe (2) and is used for fixing the position of the liner pipe (2);
welding grooves are formed in two ends of the base pipe (1); the length of the base pipe (1) is smaller than that of the liner pipe (2), two ends of the liner pipe (2) extend to the outer side of the base pipe (1), and the welding groove and a pipe section of the liner pipe (2) extending to the outer side of the base pipe (1) jointly enclose a sealing welding area; the base pipe (1) is connected with the liner pipe (2) through an adhesive layer (3);
the fixing structure comprises a surfacing component arranged between the base pipe (1) and the liner pipe (2) and distributed at the end part of the base pipe (1) and a sealing and welding component arranged in the sealing and welding area and connected with the surfacing component; the seal welding assembly comprises seal welding layers (6) which are oppositely arranged at two ends of a liner tube (2) and used for connecting the base tube (1) and the liner tube (2), wherein the seal welding layers (6) are distributed along the circumferential direction of the liner tube (2), and an annular glue-free area (4) is arranged between each seal welding layer (6) and the adhesive layer (3).
2. The bimetallic composite tube of claim 1, with a bonded interface and a sealed end, wherein: a connecting gap exists between the base pipe (1) and the liner pipe (2), the annular glue-free area (4) is arranged at the end part of the connecting gap, and the adhesive layer (3) is arranged in the connecting gap and is arranged between the two annular glue-free areas (4).
3. The bimetallic composite tube of claim 1, with a bonded interface and a sealed end, wherein: the adhesive layer (3) is of an annular structure, the adhesive layer (3) is arranged along the length direction of the base pipe (1), the central axis of the adhesive layer (3) coincides with the central axis of the base pipe (1), and the length of the adhesive layer (3) is smaller than that of the base pipe (1).
4. The bimetallic composite tube of claim 1, with a bonded interface and a sealed end, wherein: the surfacing assembly comprises surfacing layers (5) which are oppositely arranged on the inner side of the end part of the base pipe (1), the surfacing layers (5) are of annular structures and are distributed along the circumferential direction of the base pipe (1), and the inner diameter of each surfacing layer (5) is equal to that of the base pipe (1); the surfacing layer (5) is close to one side of the end part of the base pipe (1) and is connected with the surfacing layer (6).
5. The bimetallic composite tube of claim 4, with the tube ends sealed, having the bonding interface, wherein: the inner side of the end part of the base pipe (1) is provided with an annular overlaying groove for installing an overlaying layer (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020622758.XU CN212178097U (en) | 2020-04-22 | 2020-04-22 | Bimetal composite pipe with bonding interface and pipe end seal welding function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020622758.XU CN212178097U (en) | 2020-04-22 | 2020-04-22 | Bimetal composite pipe with bonding interface and pipe end seal welding function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212178097U true CN212178097U (en) | 2020-12-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020622758.XU Active CN212178097U (en) | 2020-04-22 | 2020-04-22 | Bimetal composite pipe with bonding interface and pipe end seal welding function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212178097U (en) |
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2020
- 2020-04-22 CN CN202020622758.XU patent/CN212178097U/en active Active
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