CN216201502U - Stainless steel air conditioner pipeline - Google Patents
Stainless steel air conditioner pipeline Download PDFInfo
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- CN216201502U CN216201502U CN202122754490.2U CN202122754490U CN216201502U CN 216201502 U CN216201502 U CN 216201502U CN 202122754490 U CN202122754490 U CN 202122754490U CN 216201502 U CN216201502 U CN 216201502U
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Abstract
The utility model discloses a stainless steel air-conditioning pipeline which comprises a welded stainless steel pipe body (made of SUS304/304L, SUS436/436J1L and SUS 409/409L), wherein a red copper connecting pipe and a stainless steel connecting pipe are welded above the welded stainless steel pipe body or are respectively welded at two ends. Can be applied to various pipelines, and the usage amount of copper pipes is reduced to the maximum extent. Can be applied to stainless steel gas (water) collecting pipes, silencers, filters, three-way pipes and U-shaped pipes, and has wide application range. The stainless steel pipe has the characteristics of good corrosion resistance, pressure resistance and strong tensile strength. The manufacturing cost can be reduced to the maximum extent, and the service life of the product is prolonged. The special welding technology is adopted to ensure that the brazing filler metal forms good wettability and spreadability, the strength and the sealing property of the welding line are improved, the welding line is attractive in forming, leakage is avoided, the corrosion resistance of the product is high, the pressure resistance is high, the using amount of the red copper pipe on the air-conditioning pipeline is effectively reduced, the manufacturing cost is greatly reduced, and the social and economic benefits are high and the practicability is high.
Description
Technical Field
The utility model relates to a gas collection/water assembly, in particular to a stainless steel air conditioner pipeline, and belongs to the field of pipeline application.
Background
At present, the air conditioner and heat exchanger pipelines in the market are made of copper tubes, aluminum tubes and iron tubes, the purchase cost of the materials is high, and due to the fact that the materials are poor in corrosion resistance and pressure resistance in the using process, after the air conditioner and heat exchanger pipelines are used for a period of time, the pipelines are rusted and bulge and other defects, the refrigerant of the air conditioner pipelines is leaked, and the using requirements cannot be met. Because the surface oxide layer of stainless steel is high temperature resistant and reaches more than 1600 ℃, get rid of the difficulty, the welding of present stainless steel product has two kinds of modes:
brazing in an ammonia decomposition furnace causes the defects of strength reduction, deformation, great increase of crystal grain size and the like of a base metal due to the fact that a welding base metal is in a high-temperature environment for a long time, and limitation is high.
After the oxide layer is removed by using the strong corrosive soldering flux, the welding wire with high silver content is used as the filling, so that the cost is high and the penetration depth is not good.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a stainless steel air conditioner pipeline, which can solve the technical problems of poor welding effect and high cost of the existing air conditioner pipeline.
The purpose of the utility model can be realized by the following technical scheme:
the utility model provides a stainless steel air conditioner pipeline, includes the welding stainless steel pipe body, the top welding of welding stainless steel pipe body has red copper connecting pipe and stainless steel connecting pipe or both ends to weld red copper connecting pipe and stainless steel connecting pipe respectively.
The welding stainless steel pipe body all is provided with the embolia mouth of pipe with the welded junction of red copper connecting pipe and stainless steel connecting pipe, and the tip of red copper connecting pipe and stainless steel connecting pipe is pegged graft in the inside of connection interface to and be connected and form welding gap between the interface inner wall.
The red copper connecting pipe and the stainless steel connecting pipe are in clearance fit with the connecting interface of the welding stainless steel pipe body.
The welding mode of welding the stainless steel pipe body and the red copper connecting pipe and the stainless steel connecting pipe is flame brazing, high-frequency welding or resistance welding:
the welding steps of flame brazing and high-frequency welding are as follows:
the method comprises the following steps: cleaning before welding, namely removing foreign matters and oil stains inside the connecting interface and on the surfaces of the welding ends of the red copper connecting pipe and the stainless steel connecting pipe through surface cleaning;
step two: selecting a working environment, wherein a daily workshop can be operated at normal temperature;
step three: inserting a red copper connecting pipe and a stainless steel connecting pipe to be welded into the connecting interface, wherein the insertion depth between the welded red copper connecting pipe and the stainless steel connecting pipe and the connecting interface is required to be more than or equal to 3 mm;
step four: coating a welding flux (LY-118) outside a welding position, and adding or sleeving welding ring welding flux by adopting a wire feeding mode;
step five: and heating the joints between the red copper connecting pipe and the stainless steel connecting pipe and the connecting interface by adopting flame welding or high-frequency welding, effectively removing an oxide film on the surface of a welding material by using a soldering flux (LY-118) at 580-630 ℃ under the action of temperature, and filling the welding flux at 780-930 ℃ to uniformly dissolve and fill a welding gap to finish welding.
The welding steps of the resistance welding are as follows:
the method comprises the following steps: cleaning before welding, and removing foreign matters and oil stains on the inside and outside of the connecting interface, the inside and outside of the welding end of the red copper connecting pipe and the stainless steel connecting pipe through surface cleaning;
step two: selecting a working environment, wherein a daily workshop can be operated at normal temperature;
step three: fixing the stainless steel body to be welded on the welding, and inserting the red copper connecting pipe and the stainless steel connecting pipe to be welded into an upper end electrode perpendicular to the connecting interface to be clamped;
step four: coating welding flux outside the welding ends of the red copper connecting pipe and the stainless steel connecting pipe and inside the welding gap;
step five: starting equipment, pressing down an electrode at the upper end, installing the red copper connecting pipe and the stainless steel connecting pipe into the stainless steel body connecting interface for pressing, starting the equipment, generating high temperature at a welding port through instantaneous high current, and performing pressure welding on the welding port again in a melting point state;
preferably, the welding temperature of the flame brazing and the high-frequency welding is 820-960 ℃.
Preferably, in the step one, the cleaning agent used for cleaning before welding is water.
Preferably, the flux in the fourth step is a metal flux of LY-118.
Preferably, the solder is a brass solder or a nickel-copper solder.
The utility model has the beneficial effects that:
the welding process can be applied to various pipelines, and the usage amount of the copper pipe is reduced to the maximum extent. Can be applied to stainless steel gas (water) collecting pipes, silencers and filters, and has wide application range. The stainless steel pipe has the characteristics of good corrosion resistance and strong pressure resistance and tensile strength. The manufacturing cost can be reduced to the maximum extent, and the service life of the product is prolonged. The special welding technology is adopted to ensure that the brazing filler metal forms good wettability and spreadability, the strength and the sealing property of the welding line are improved, the welding line is attractive in forming, leakage is avoided, the corrosion resistance of the product is high, the pressure resistance is high, the using amount of the red copper pipe on the pipeline is effectively reduced, the manufacturing cost is greatly reduced, and the high social and economic benefits and the strong practicability are achieved.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic view of the welding structure of the red copper connecting pipe and the stainless steel connecting pipe above the welded stainless steel pipe body according to the present invention.
FIG. 2 is a schematic view of the welding structure of the red copper connecting pipe and the welded stainless steel pipe body according to the present invention.
FIG. 3 is a schematic view of the welding structure of the red copper connecting pipe and the stainless steel connecting pipe at the end of the welded stainless steel pipe body according to the present invention.
Fig. 4 is a cross-sectional view of fig. 3 of the present invention.
FIG. 5 is an enlarged view of a portion of FIG. 4 according to the present invention.
In the figure: 1. welding a stainless steel pipe body; 2. a stainless steel connecting pipe; 3. a red copper connecting pipe; 4. welding flux; 5. and (6) welding the gap.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood 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 the schematic illustrations of figures 1-5,
the first embodiment is as follows:
a stainless steel air conditioner pipeline comprises a welded stainless steel pipe body 1, wherein a red copper connecting pipe 3 and a stainless steel connecting pipe 2 are welded above the welded stainless steel pipe body 1 or the two ends of the welded stainless steel pipe body are respectively welded with the red copper connecting pipe 3 and the stainless steel connecting pipe 2;
the welding parts of the stainless steel pipe body 1, the red copper connecting pipe 3 and the stainless steel connecting pipe 2 are provided with connecting interfaces, the ends of the red copper connecting pipe 3 and the stainless steel connecting pipe 2 are inserted in the connecting interfaces, and a welding gap 5 is formed between the ends and the inner wall of the connecting interfaces;
the red copper connecting pipe 3 and the stainless steel connecting pipe 2 are in clearance fit with the connecting interface of the welding stainless steel pipe body 1;
the welding mode of welding the stainless steel pipe body 1 with the red copper connecting pipe 3 and the stainless steel connecting pipe 2 is flame brazing, high-frequency welding or resistance welding:
the welding steps of flame brazing and high-frequency welding are as follows:
the method comprises the following steps: cleaning before welding, namely removing foreign matters and oil stains on the inner part of the connecting interface and the surfaces of the welding ends of the red copper connecting pipe 3 and the stainless steel connecting pipe 2 through surface cleaning;
step two: selecting a working environment, wherein a daily workshop can be operated at normal temperature;
step three: inserting the red copper connecting pipe 3 and the stainless steel connecting pipe 2 to be welded into the connecting interface, wherein the insertion depth between the welded red copper connecting pipe 3 and the stainless steel connecting pipe 2 and the connecting interface is required to be more than or equal to 3 mm;
step four: coating a welding flux (LY-118) outside the welding position, and adding or sleeving welding ring welding flux 4 by adopting a wire feeding mode;
step five: and heating the joints between the red copper connecting pipe 3 and the stainless steel connecting pipe 2 and the connecting interface by adopting flame welding or high-frequency welding, effectively removing an oxide film on the surface of a welding material by using a soldering flux (LY-118) at 580-630 ℃ under the action of temperature, and filling the welding flux at 780-930 ℃ to uniformly dissolve and fill a welding gap to finish welding.
As a technical optimization scheme of the utility model, the welding temperature of flame brazing and high-frequency welding is 780-930 ℃.
As a technical optimization scheme of the utility model, in the step one, a cleaning agent used for cleaning before welding is water.
As a technical optimization scheme of the utility model, the welding flux in the fourth step is a metal welding flux of LY-118, the LY-118 welding flux has good wettability, an oxide layer on the surface of stainless steel is effectively removed during welding, so that the brazing filler metal forms good self-fluxing in a welding seam, the permeability is good, the welding base metal is not corroded, the requirement on welding environment is not high, flame welding and high-frequency welding can be adopted as a welding mode, and the brazing cost is greatly reduced.
As a technical optimization scheme of the utility model, the solder is brass solder or nickel-copper solder
Example two:
a stainless steel air conditioner pipeline comprises a welded stainless steel pipe body 1, wherein a red copper connecting pipe 3 and a stainless steel connecting pipe 2 are welded above the welded stainless steel pipe body 1 or the two ends of the welded stainless steel pipe body are respectively welded with the red copper connecting pipe 3 and the stainless steel connecting pipe 2;
the welding parts of the stainless steel pipe body 1, the red copper connecting pipe 3 and the stainless steel connecting pipe 2 are provided with connecting interfaces, the ends of the red copper connecting pipe 3 and the stainless steel connecting pipe 2 are inserted in the connecting interfaces, and a welding gap 5 is formed between the ends and the inner wall of the connecting interfaces;
the red copper connecting pipe 3 and the stainless steel connecting pipe 2 are in clearance fit with the connecting interface of the welding stainless steel pipe body 1;
the welding mode of welding the stainless steel pipe body 1 with the red copper connecting pipe 3 and the stainless steel connecting pipe 2 is flame brazing and high-frequency welding.
The welding steps of the resistance welding are as follows:
the method comprises the following steps: cleaning before welding, namely removing foreign matters and oil stains on the inner part of the connecting interface and the surfaces of the welding ends of the red copper connecting pipe 3 and the stainless steel connecting pipe 2 through surface cleaning;
step two: selecting a working environment, wherein a daily workshop can be operated at normal temperature;
step three: inserting the red copper connecting pipe 3 and the stainless steel connecting pipe 2 to be welded into the connecting interface, wherein the insertion depth between the welded red copper connecting pipe 3 and the stainless steel connecting pipe 2 and the connecting interface is required to be more than or equal to 3 mm;
step four: coating a welding flux (LY-118) outside the welding position, and adding or sleeving welding ring welding flux 4 by adopting a wire feeding mode;
step five: and heating the joints between the red copper connecting pipe 3 and the stainless steel connecting pipe 2 and the connecting interface by adopting flame welding or high-frequency welding, effectively removing an oxide film on the surface of a welding material by using a soldering flux (LY-118) at 580-630 ℃ under the action of temperature, and filling the welding flux at 780-930 ℃ to uniformly dissolve and fill a welding gap to finish welding.
The welding steps of the resistance welding are as follows:
the method comprises the following steps: cleaning before welding, and removing foreign matters and oil stains inside and outside the connecting interface, the red copper connecting pipe 3 and the stainless steel connecting pipe 2 at the welding end and inside and outside through surface cleaning;
step two: selecting a working environment, wherein a daily workshop can be operated at normal temperature;
step three: fixing the stainless steel body to be welded on the welding, and inserting the red copper connecting pipe 3 and the stainless steel connecting pipe 2 to be welded into an upper end electrode vertical to the connecting interface for clamping;
step four: coating welding flux outside the welding ends of the red copper connecting pipe 3 and the stainless steel connecting pipe 2 and inside the welding gap 5;
step five: starting equipment, pressing down an upper end electrode, installing the red copper connecting pipe 3 and the stainless steel connecting pipe 2 into a stainless steel body connecting interface for pressing, starting the equipment, generating high temperature at a welding interface through instantaneous high current, and performing pressure welding on the welding interface again in a melting point state;
as a technical optimization scheme of the utility model, in the step one, a cleaning agent used for cleaning before welding is water.
As a technical optimization scheme of the utility model, the welding flux in the fourth step is a metal welding flux of LY-118, the LY-118 welding flux has good wettability, an oxide layer on the surface of stainless steel is effectively removed during welding, so that the brazing filler metal forms good self-fluxing in a welding seam, the permeability is good, the welding base metal is not corroded, the requirement on welding environment is not high, flame welding and high-frequency welding can be adopted as a welding mode, and the brazing cost is greatly reduced.
The preferred embodiments of the utility model disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the utility model to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best utilize the utility model. The utility model is limited only by the claims and their full scope and equivalents.
Claims (1)
1. A stainless steel air-conditioning pipeline comprises a welded stainless steel pipe body (1), and is characterized in that a red copper connecting pipe (3) and a stainless steel connecting pipe (2) are welded above the welded stainless steel pipe body (1) or the red copper connecting pipe (3) and the stainless steel connecting pipe (2) are respectively welded at two ends of the welded stainless steel pipe body;
the welding parts of the stainless steel pipe body (1) and the red copper connecting pipe (3) and the stainless steel connecting pipe (2) are respectively provided with a connecting interface, the end parts of the red copper connecting pipe (3) and the stainless steel connecting pipe (2) are inserted in the connecting interfaces, and a welding gap (5) is formed between the end parts and the inner wall of the connecting interfaces;
the red copper connecting pipe (3) and the stainless steel connecting pipe (2) are in clearance fit with the connecting interface of the welding stainless steel pipe body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122754490.2U CN216201502U (en) | 2021-11-11 | 2021-11-11 | Stainless steel air conditioner pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122754490.2U CN216201502U (en) | 2021-11-11 | 2021-11-11 | Stainless steel air conditioner pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216201502U true CN216201502U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122754490.2U Active CN216201502U (en) | 2021-11-11 | 2021-11-11 | Stainless steel air conditioner pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216201502U (en) |
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2021
- 2021-11-11 CN CN202122754490.2U patent/CN216201502U/en active Active
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