CN211925062U - Welding structure of stainless steel pipe and copper pipe - Google Patents
Welding structure of stainless steel pipe and copper pipe Download PDFInfo
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- CN211925062U CN211925062U CN202020391144.5U CN202020391144U CN211925062U CN 211925062 U CN211925062 U CN 211925062U CN 202020391144 U CN202020391144 U CN 202020391144U CN 211925062 U CN211925062 U CN 211925062U
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- copper
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- steel pipe
- pipe fitting
- pipe
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Abstract
A welded structure of stainless steel pipe and copper pipe, including stainless steel pipe fitting and copper pipe fitting, the both ends of the stainless steel pipe fitting all adopt the throat structure, and make its external diameter slightly smaller than the internal diameter of the copper pipe fitting, the stainless steel pipe fitting is located and penetrated and equipped with weld ring and copper stopper from left to right sequentially in the throat, and penetrate and equipped with the copper pipe fitting outside the copper stopper, weld through the solder between copper pipe fitting's mouth of pipe edge and the copper stopper, the utility model discloses an outer cover copper stopper structure, increase pipeline spare compressive strength, avoid the intercrystalline leakage of copper pipe; the pressure resistance of the product can be improved by wrapping the stainless steel pipe with the copper pipe and supporting the stainless steel pipe inside; by wrapping the copper plug, the defect that leakage risk exists due to coarse grains formed by the copper plug at high temperature of furnace welding can be avoided; and the penetration rate of the solder of the product can be judged through the appearances of the two ends of the copper plug.
Description
Technical Field
The utility model relates to a pipe fitting connection structure that refrigeration plant used, more specifically say, especially relate to a welded structure of nonrust steel pipe and copper pipe.
Background
At present, a refrigeration equipment system needs to use a pipeline piece to transmit a refrigerant, and a red copper pipe is conventionally used in the industry; compared with a copper tube, the stainless steel tube has low cost and high pressure resistance, but the components and the performances of two materials of the stainless steel tube and the copper tube are greatly different, so that the traditional brazing cannot be directly welded, and the use cost of the high-silver solder is too high.
SUMMERY OF THE UTILITY MODEL
The utility model discloses improve prior art to above-mentioned shortcoming, provide a welded structure of nonrust steel pipe and copper pipe, technical scheme as follows:
the utility model provides a welded structure of nonrust steel pipe and copper pipe, is including nonrust steel pipe spare and copper pipe spare, the both ends of nonrust steel pipe spare all adopt throat structure to make its external diameter slightly less than the internal diameter of copper pipe spare, what the nonrust steel pipe spare was located the throat from left to right wears to be equipped with welding ring and copper stopper in proper order to wear to be equipped with the copper pipe spare in the outside of copper stopper, pass through the solder welding between the mouth of pipe edge of copper pipe spare and the copper stopper.
And a chamfer is formed on the inner side of one end of the copper plug and forms a guide cone angle.
The solder is bronze solder.
And the edge of the pipe orifice of the copper pipe fitting and the copper plug are welded and fixed by using oxygen-free furnace welding.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model increases the pressure resistance strength of the pipeline piece and avoids the leakage of the copper pipe between the crystal grains by the structure of the outer sleeve copper plug; the pressure resistance of the product can be improved by wrapping the stainless steel pipe with the copper pipe and supporting the stainless steel pipe inside; by wrapping the copper plug, the defect that leakage risk exists due to coarse grains formed by the copper plug at high temperature of furnace welding can be avoided; and the penetration rate of the solder of the product can be judged through the appearances of the two ends of the copper plug.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described as follows:
fig. 1 is a schematic perspective view of the present invention;
FIG. 2 is an enlarged view of the welding structure of the present invention;
FIG. 3 is an overall view of the present invention;
FIG. 4 is a schematic structural view of the copper plug of the present invention;
the method comprises the following steps: stainless steel pipe fitting 1, copper pipe fitting 2, welding ring 3, copper plug 4, solder 5, guide cone angle 6.
Detailed Description
The technical solutions in the embodiments of the present invention are 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 some embodiments of the present invention, not all embodiments. Based on the embodiment of 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.
Embodiments of the present invention will be described in further detail below with reference to the following drawings, in which:
the utility model provides a welded structure of nonrust steel pipe and copper pipe, is including nonrust steel pipe fitting 1 and copper pipe fitting 2, and the both ends of nonrust steel pipe fitting 1 all adopt the throat structure to make its external diameter slightly less than the internal diameter of copper pipe fitting 2, nonrust steel pipe fitting 1 is located the throat and from left to right wears to be equipped with welding ring 3 and copper stopper 4 in proper order, and wears to be equipped with copper pipe fitting 2 in the outside of copper stopper 4, welds through solder 5 between the mouth of pipe edge of copper pipe fitting 2 and the copper stopper 4.
The inner side of one end of the copper plug 4 is provided with a chamfer and forms a guide cone angle 6, the solder 5 is bronze solder 5, the liquidus of the bronze solder 5 is 1030 ℃, the liquidus of the conventional phosphor copper or low silver solder 5 is 850 ℃, the liquidus of the bronze solder 5 is higher than the liquidus of the conventional flame soldering solder 5, and the edge of the pipe orifice of the copper pipe part 2 and the copper plug 4 are welded and fixed by oxygen-free furnace welding.
Taking the working principle combined with the structure as an example:
the first step is as follows: stainless steel pipe fittings 1 for providing customer requirements;
the second step is that: processing a standard copper pipe into a copper plug 4;
the third step: sleeving a bronze welding ring 3 outside a necking part of the stainless steel pipe fitting 1, and sleeving a copper plug 4 outside the stainless steel pipe fitting;
the fourth step: the end part of the copper plug 4 protrudes out of the stainless steel end face by 0-1.5mm, and the copper plug 4 is pressed tightly by a punch or a pressing device to form tight fit;
the fifth step: putting the assembly into a high-temperature ammonia decomposition furnace for heating;
and a sixth step: the welding ring 3 is melted to connect and fix the copper plug 4 and the stainless steel pipe fitting 1;
the seventh step: forming a pipe orifice structure with red copper outside, and controlling the insertion depth by a client through flaring and piping;
eighth step: customers use conventional brazing for piping flame or induction welding.
The utility model increases the pressure resistance strength of the pipeline piece and avoids the leakage between the copper pipes and the crystal through the structure of the outer sleeve copper plug 4; the pressure resistance of the product can be improved by wrapping the stainless steel pipe with the copper pipe and supporting the stainless steel pipe inside; by wrapping the copper plug 4, the defect that leakage risk exists due to coarse grains formed by the copper plug 4 at high temperature of furnace welding can be avoided; and the permeability of the solder 5 of the product can be judged by the appearance of the two ends of the copper plug 4.
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 invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a welded structure of nonrust steel pipe and copper pipe, includes stainless steel pipe fitting (1) and copper pipe fitting (2), its characterized in that: the stainless steel pipe fitting is characterized in that both ends of the stainless steel pipe fitting (1) are of a reducing structure, the outer diameter of the stainless steel pipe fitting is slightly smaller than the inner diameter of the copper pipe fitting (2), the stainless steel pipe fitting (1) is located at the reducing position and sequentially provided with a welding ring (3) and a copper plug (4) from left to right, the copper pipe fitting (2) is arranged on the outer side of the copper plug (4) in a penetrating mode, and the edge of a pipe opening of the copper pipe fitting (2) is welded with the copper plug (4) through welding fluxes (5).
2. The welding structure of the stainless steel pipe and the copper pipe according to claim 1, wherein: and a chamfer is formed on the inner side of one end of the copper plug (4) and forms a guide cone angle (6).
3. The welding structure of the stainless steel pipe and the copper pipe according to claim 1, wherein: the solder (5) is bronze solder.
4. The welding structure of the stainless steel pipe and the copper pipe according to claim 1, wherein: and the edge of the pipe orifice of the copper pipe fitting (2) and the copper plug (4) are welded and fixed by using oxygen-free furnace welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020391144.5U CN211925062U (en) | 2020-03-25 | 2020-03-25 | Welding structure of stainless steel pipe and copper pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020391144.5U CN211925062U (en) | 2020-03-25 | 2020-03-25 | Welding structure of stainless steel pipe and copper pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211925062U true CN211925062U (en) | 2020-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020391144.5U Active CN211925062U (en) | 2020-03-25 | 2020-03-25 | Welding structure of stainless steel pipe and copper pipe |
Country Status (1)
| Country | Link |
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| CN (1) | CN211925062U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021184944A1 (en) * | 2020-03-18 | 2021-09-23 | 浙江盾安人工环境股份有限公司 | Pipe fitting connecting structure |
| WO2022121523A1 (en) * | 2020-12-07 | 2022-06-16 | 广东美的暖通设备有限公司 | Pipeline connection structure, compressor assembly, and air conditioner |
| WO2022218023A1 (en) * | 2021-04-13 | 2022-10-20 | 浙江盾安人工环境股份有限公司 | Joint assembly, four-way valve assembly and air conditioner system |
-
2020
- 2020-03-25 CN CN202020391144.5U patent/CN211925062U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021184944A1 (en) * | 2020-03-18 | 2021-09-23 | 浙江盾安人工环境股份有限公司 | Pipe fitting connecting structure |
| WO2022121523A1 (en) * | 2020-12-07 | 2022-06-16 | 广东美的暖通设备有限公司 | Pipeline connection structure, compressor assembly, and air conditioner |
| EP4130537A4 (en) * | 2020-12-07 | 2023-11-15 | GD Midea Heating & Ventilating Equipment Co., Ltd. | Pipeline connection structure, compressor assembly, and air conditioner |
| WO2022218023A1 (en) * | 2021-04-13 | 2022-10-20 | 浙江盾安人工环境股份有限公司 | Joint assembly, four-way valve assembly and air conditioner system |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.16, Keyuan 3rd road, science and Technology Industrial Park, Shunde high tech Industrial Development Zone, xiaohuangpu neighborhood committee, Ronggui sub district office, Shunde District, Foshan City, Guangdong Province, 528305 Patentee after: Guangdong Henderson Metal Co.,Ltd. Address before: No.16, Keyuan 3rd road, science and Technology Industrial Park, Shunde high tech Industrial Development Zone, xiaohuangpu neighborhood committee, Ronggui sub district office, Shunde District, Foshan City, Guangdong Province, 528305 Patentee before: Guangdong Hangji Metal Product Industrial Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |