CN212643809U - Corrosion-resistant copper-aluminum joint - Google Patents
Corrosion-resistant copper-aluminum joint Download PDFInfo
- Publication number
- CN212643809U CN212643809U CN202020685245.3U CN202020685245U CN212643809U CN 212643809 U CN212643809 U CN 212643809U CN 202020685245 U CN202020685245 U CN 202020685245U CN 212643809 U CN212643809 U CN 212643809U
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- CN
- China
- Prior art keywords
- pipe
- aluminum
- copper
- baffle
- copper pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000007797 corrosion Effects 0.000 title claims abstract description 19
- 238000005260 corrosion Methods 0.000 title claims abstract description 19
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 title claims abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 60
- 229910052802 copper Inorganic materials 0.000 claims abstract description 60
- 239000010949 copper Substances 0.000 claims abstract description 60
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 57
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 57
- 238000003466 welding Methods 0.000 claims abstract description 19
- 238000005192 partition Methods 0.000 claims description 16
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 239000004411 aluminium Substances 0.000 claims description 6
- 238000005057 refrigeration Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract 1
- 239000003792 electrolyte Substances 0.000 description 2
- 238000006056 electrooxidation reaction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 208000004350 Strabismus Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
The utility model relates to the technical field of refrigeration pipelines, in particular to a corrosion-resistant copper-aluminum joint, which solves the defects that the welding is inconvenient and the copper-aluminum joint is easy to generate galvanic corrosion and the service life of the pipeline is shortened in the prior art, and comprises a copper pipe and an aluminum pipe, a stainless pipe connecting sleeve is arranged between the copper pipe and the aluminum pipe, the stainless pipe connecting sleeve comprises a sleeve main body and a baffle plate, the sleeve main body is a cylindrical structure with two communicated ends, the baffle plate is arranged in the middle of the inner part of the sleeve main body, the copper pipe is not directly contacted with the aluminum pipe, the galvanic corrosion of the pipeline is reduced, two ends of the baffle plate close to the copper pipe and the aluminum pipe are both provided with limiting grooves, two sides of two ends of the baffle plate are both provided with openings which are communicated with the limiting grooves, one ends of the copper pipe and the aluminum pipe close to the baffle, the positioning device is convenient for positioning the copper pipe and the aluminum pipe, simple in structure, convenient to operate and long in service life.
Description
Technical Field
The utility model relates to a refrigeration pipeline technical field specifically is a corrosion-resistant copper aluminium joint.
Background
The copper pipe has good ductility, oxidation resistance and strong pressure resistance, and is not easy to corrode, so the copper pipe is generally adopted as a connecting pipe in a refrigeration system, but the manufacturing cost of the copper pipe is higher, and in order to reduce the cost, the aluminum pipe can be connected on part of pipelines for use, so the copper pipe and the aluminum pipe need to be connected into a whole by welding;
in actual use, generally, with copper pipe and aluminum pipe one end butt joint, then as an organic whole through welded connection, be not convenient for during the operation fix a position the pipeline, the operation is inconvenient during the welding, cause the change of pipeline internal diameter easily when the pipeline takes place to squint, but require during the in-service use that the inner section of refrigerating pipeline is smooth as far as possible, the condition of sudden undergauge or expansion does not have, because copper and aluminium's the potential difference in the electrolyte is very big, when the contact zone of copper pipe and aluminum pipe has the electrolyte to cover, electrochemical corrosion very easily produces at copper aluminum joint position, shorten the life of pipeline.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a corrosion-resistant copper aluminium joint to the welding of being not convenient for that proposes in solving above-mentioned background art takes place galvanic corrosion easily with copper aluminium joint, shortens the life problem of pipeline.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a corrosion-resistant copper aluminium connects, includes copper pipe and aluminum pipe, be provided with nonrust union coupling sleeve between copper pipe and the aluminum pipe, nonrust union coupling sleeve includes bushing body and baffle, bushing body is the cylindric structure of both ends intercommunication, and the baffle setting is in the inside centre of bushing body, the both ends that the baffle is close to copper pipe and aluminum pipe all are provided with the spacing groove, the both sides at baffle both ends all are provided with the opening, and opening and spacing groove intercommunication, the one end that copper pipe and aluminum pipe are close to the baffle all is provided with annular lug, and the both sides of annular lug one end all are provided with the limiting plate.
Preferably, the radiuses of the copper pipe and the aluminum pipe are the same, the inner diameter of the sleeve main body is the same as the outer diameters of the copper pipe and the aluminum pipe, and the inner diameter of the partition plate is the same as the inner diameters of the copper pipe and the aluminum pipe.
Preferably, the stainless pipe connecting sleeve is sleeved with a heat shrink pipe, and two ends of the heat shrink pipe respectively extend to the outer sides of the copper pipe and the aluminum pipe.
Preferably, the cross section of the limiting groove is L-shaped, the annular convex block, the limiting plate and the limiting groove are matched with each other, and the limiting plate and the opening are matched with each other.
Preferably, the inner side walls of the sleeve main bodies on the two sides of the partition board are respectively provided with a first annular caulking groove and a second annular caulking groove, and welding wires are arranged inside the first annular caulking groove and the second annular caulking groove.
Compared with the prior art, the beneficial effects of the utility model are that: the corrosion-resistant copper-aluminum joint
(1) By arranging the sleeve main body and the partition plate, the copper pipe and the aluminum pipe are inserted at two ends in the sleeve main body, the copper pipe and the aluminum pipe are isolated by the partition plate, and the copper pipe and the aluminum pipe are not directly contacted, galvanic corrosion caused by potential difference of the copper pipe and the aluminum pipe can be reduced, the service life of a product is prolonged, and the structure is simple;
(2) the two ends of the partition board are provided with the limiting grooves and the openings, the annular convex blocks and the limiting plates are arranged at one ends of the copper pipe and the aluminum pipe, before welding, the limiting plates are aligned to the openings and inserted into the sleeve main body, the annular convex blocks and the limiting plates are embedded into the limiting grooves, then the limiting plates and the openings are staggered by a certain angle, and therefore positioning of the copper pipe and the aluminum pipe is completed, later-stage welding is facilitated, and the phenomenon that the copper pipe and the aluminum pipe are displaced in the welding process to cause gaps between the copper pipe or the aluminum pipe and the partition board and cause sudden increase of the inner diameter of the pipeline to influence the flow of;
(3) set up the pyrocondensation pipe through the outside at nonrust union coupling sleeve pipe, the pyrocondensation pipe reduces through the heating volume, cup joints in nonrust union coupling sleeve pipe's the outside, reduces the contact with external environment, avoids the entering aggravation of air or rainwater to connect the corruption.
Drawings
FIG. 1 is a schematic front sectional view of the present invention;
FIG. 2 is a schematic view of the cross-sectional structure of the stainless pipe connecting sleeve according to the present invention;
FIG. 3 is a schematic diagram of a side view of the partition board of the present invention;
fig. 4 is an enlarged schematic structural view of a portion a in fig. 1 according to the present invention.
In the figure: 1. a copper pipe; 2. the stainless pipe is connected with the sleeve; 201. a cannula body; 2011. a first annular caulking groove; 2012. a second annular caulking groove; 202. a partition plate; 2021. a limiting groove; 2022. an opening; 3. welding wires; 4. heat shrink tubing; 5. an aluminum tube; 6. an annular projection; 7. and a limiting plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides an embodiment: a corrosion-resistant copper-aluminum joint comprises a copper pipe 1 and an aluminum pipe 5, a stainless pipe connecting sleeve 2 is arranged between the copper pipe 1 and the aluminum pipe 5, the stainless pipe connecting sleeve 2 comprises a sleeve main body 201 and a partition plate 202, the sleeve main body 201 is of a cylindrical structure with two communicated ends, the partition plate 202 is arranged in the middle of the inner part of the sleeve main body 201, the radiuses of the copper pipe 1 and the aluminum pipe 5 are the same, the inner diameter of the sleeve main body 201 is the same as the outer diameters of the copper pipe 1 and the aluminum pipe 5, the copper pipe 1 and the aluminum pipe 5 can be inserted at two ends of the stainless pipe connecting sleeve 2, and the inner diameter of the partition plate 202 is the same as the inner diameters of;
a first annular caulking groove 2011 and a second annular caulking groove 2012 are respectively arranged on the inner side walls of the sleeve main bodies 201 on the two sides of the partition plate 202, welding wires 3 are respectively arranged inside the first annular caulking groove 2011 and the second annular caulking groove 2012, and a welding seam is formed by melting the welding wires 3, so that the copper pipe 1, the stainless pipe connecting sleeve 2 and the aluminum pipe 5 are connected into a whole;
the two ends of the partition plate 202, which are close to the copper pipe 1 and the aluminum pipe 5, are provided with limiting grooves 2021, the two sides of the two ends of the partition plate 202 are provided with openings 2022, the openings 2022 are communicated with the limiting grooves 2021, one ends of the copper pipe 1 and the aluminum pipe 5, which are close to the partition plate 202, are provided with annular lugs 6, the two sides of one end of each annular lug 6 are provided with limiting plates 7, the cross section of each limiting groove 2021 is L-shaped, the annular lugs 6 and the limiting plates 7 are matched with the limiting grooves 2021, the limiting plates 7 are matched with the openings 2022, the limiting plates 7 are inserted into the limiting grooves 2021 through the openings 2022, and then the copper pipe 1 and the aluminum pipe 5 can be positioned by rotating a certain angle to enable the;
the outside of nonrust union coupling sleeve pipe 2 has cup jointed pyrocondensation pipe 4, and the both ends of pyrocondensation pipe 4 extend to the outside of copper pipe 1 and aluminum pipe 5 respectively, can to pyrocondensation pipe 4 heating, and 4 shrink parcel of pyrocondensation pipe are in the outside of copper pipe 1, nonrust union coupling sleeve pipe 2 and aluminum pipe 5, avoid inside leading to of rainwater or air entering to connect by the corruption, and corrosion resistance is good.
The working principle is as follows: before welding, the heat shrinkable tube 4 is sleeved outside the stainless tube connecting sleeve 2, the limit plate 7 is aligned to the opening 2022, the copper tube 1 and the aluminum tube 5 are sequentially inserted into two ends of the sleeve main body 201, after one end of the limit plate 7 is abutted to the bottom end of the limit groove 2021, the limit plate 7 is rotated by a certain angle to be staggered with the opening 2022, so that the copper tube 1 and the aluminum tube 5 are positioned, the operation is convenient, the pipeline is heated, the welding wire 3 is melted to form a welding line, the copper tube 1 and the welding wire 3 are welded into a whole, when the welding device is used, the copper tube 1 and the aluminum tube 5 are not in direct contact, the potential difference of stainless steel is between copper and aluminum, the electrochemical corrosion of the copper tube 1 and the aluminum tube 5 can be reduced, after the welding is finished, the heat shrinkable tube 4 is heated, the heat shrinkable tube 4 is shrunk and sleeved outside the heat shrinkable tube, accelerating the corrosion of the joint.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (5)
1. The utility model provides a corrosion-resistant copper aluminium connects, includes copper pipe (1) and aluminum pipe (5), its characterized in that: be provided with between copper pipe (1) and aluminum pipe (5) nonrust union coupling sleeve pipe (2), nonrust union coupling sleeve pipe (2) are including sleeve pipe main part (201) and baffle (202), sleeve pipe main part (201) are the cylindric structure of both ends intercommunication, and baffle (202) set up in the inside centre of sleeve pipe main part (201), the both ends that baffle (202) are close to copper pipe (1) and aluminum pipe (5) all are provided with spacing groove (2021), the both sides at baffle (202) both ends all are provided with opening (2022), and opening (2022) and spacing groove (2021) intercommunication, the one end that copper pipe (1) and aluminum pipe (5) are close to baffle (202) all is provided with annular lug (6), and the both sides of annular lug (6) one end all are provided with limiting plate (7).
2. A corrosion resistant copper aluminum joint as claimed in claim 1, wherein: the radius of the copper pipe (1) is the same as that of the aluminum pipe (5), the inner diameter of the sleeve main body (201) is the same as the outer diameter of the copper pipe (1) and the outer diameter of the aluminum pipe (5), and the inner diameter of the partition plate (202) is the same as that of the copper pipe (1) and the aluminum pipe (5).
3. A corrosion resistant copper aluminum joint as claimed in claim 1, wherein: the outer side of the stainless pipe connecting sleeve (2) is sleeved with a heat shrink pipe (4), and two ends of the heat shrink pipe (4) respectively extend to the outer sides of the copper pipe (1) and the aluminum pipe (5).
4. A corrosion resistant copper aluminum joint as claimed in claim 1, wherein: the cross section of the limiting groove (2021) is L-shaped, the annular bump (6), the limiting plate (7) and the limiting groove (2021) are matched with each other, and the limiting plate (7) and the opening (2022) are matched with each other.
5. A corrosion resistant copper aluminum joint as claimed in claim 1, wherein: be provided with first annular caulking groove (2011) and second annular caulking groove (2012) on the inside wall of baffle (202) both sides sleeve pipe main part (201) respectively, and the inside of first annular caulking groove (2011) and second annular caulking groove (2012) all is provided with welding wire (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020685245.3U CN212643809U (en) | 2020-04-29 | 2020-04-29 | Corrosion-resistant copper-aluminum joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020685245.3U CN212643809U (en) | 2020-04-29 | 2020-04-29 | Corrosion-resistant copper-aluminum joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212643809U true CN212643809U (en) | 2021-03-02 |
Family
ID=74795068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020685245.3U Expired - Fee Related CN212643809U (en) | 2020-04-29 | 2020-04-29 | Corrosion-resistant copper-aluminum joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212643809U (en) |
-
2020
- 2020-04-29 CN CN202020685245.3U patent/CN212643809U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210302 |