CN212286375U - Welding structure for brazing inner wall of stainless steel pipe - Google Patents
Welding structure for brazing inner wall of stainless steel pipe Download PDFInfo
- Publication number
- CN212286375U CN212286375U CN201922314065.4U CN201922314065U CN212286375U CN 212286375 U CN212286375 U CN 212286375U CN 201922314065 U CN201922314065 U CN 201922314065U CN 212286375 U CN212286375 U CN 212286375U
- Authority
- CN
- China
- Prior art keywords
- welding
- steel pipe
- stainless steel
- spot
- wall
- 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.)
- Active
Links
Images
Landscapes
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The utility model belongs to the technical field of thin metal tube inside is brazed, concretely relates to a welded structure for nonrust steel pipe inner wall is brazed. The metal thermocouple and the solder fixing structure are fixed in a spot welding mode, and the silver-copper solder is arranged between the metal thermocouple and the solder fixing structure; the welding spot supporting structure is fixed on the back of the welding flux fixing structure in a spot welding manner; the end of the metal thermocouple penetrates into a position to be welded in the stainless steel pipe. The utility model discloses can realize the inside temperature measurement point location of steel pipe, improve temperature sensitivity to guarantee holistic mechanical strength.
Description
Technical Field
The utility model belongs to the technical field of thin metal tube inside is brazed, concretely relates to a welded structure for nonrust steel pipe inner wall is brazed.
Background
The temperature of the cooling liquid inside the high-temperature pressure container needs to be measured in real time through the thermocouple, so that the metal thermocouple is protected by the pressure-bearing stainless steel sleeve and extends into the high-temperature and high-pressure cooling liquid inside the pressure container, and the high-temperature pressure container needs to have quick thermal response performance. In order to fix the position of the metal thermocouple in the steel pipe and improve the thermal response speed of the thermocouple to the external temperature, the end of the metal thermocouple is welded with the inner wall of the steel pipe in a brazing mode. The welding process needs to be carried out in a closed slender steel pipe (the inner diameter is less than or equal to 6mm), the size of a designed structural part is required to be small, and the feasibility and consistency of the welding method are difficult problems.
Disclosure of Invention
An object of the utility model is to provide a welded structure for nonrust steel pipe inner wall is brazed to realize the inside temperature measurement point location of steel pipe, improve temperature measurement sensitivity, and guarantee holistic mechanical strength.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
a welding structure for brazing the inner wall of a stainless steel pipe is characterized in that a metal thermocouple and a welding flux fixing structure are fixed in a spot welding mode, and silver-copper welding flux is arranged between the metal thermocouple and the welding flux fixing structure; the welding spot supporting structure is fixed on the back of the welding flux fixing structure in a spot welding manner; the end of the metal thermocouple penetrates into a position to be welded in the stainless steel pipe.
The solder fixing structure is a stainless steel sheet.
The welding spot supporting structure is a stainless steel elastic sheet, and the welding spot is extruded to be tightly attached to the inner wall of the stainless steel pipe.
The utility model discloses the beneficial effect who gains does:
the utility model discloses an assembly structure is simple, and the process feasibility is high, and the welding uniformity is good, is applicable to the assembly and the welding of the long and thin nonrust steel sleeve pipe temperature sensor of combination formula, improves its heat conductivility and mechanical strength.
Drawings
FIG. 1 is a schematic view of a braze joint location;
FIG. 2 is a schematic diagram of a transverse cross-sectional structure of an internal weld of a pipe;
in the figure: 1-a metal thermocouple; 2-stainless steel tube; 3-silver copper solder; 4-a solder-securing structure; 5-solder joint support structure.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 and 2, the metal thermocouple 1 and the solder fixing structure 4 are fixed by spot welding, and the silver-copper solder 3 is arranged between the metal thermocouple 1 and the solder fixing structure 4; the welding spot supporting structure 5 is fixed on the back of the welding material fixing structure 4 in a spot welding mode; the end of the metal thermocouple 1 penetrates into a position to be welded in the stainless steel pipe 2. The solder fixing structure 4 is a stainless steel sheet; the welding spot supporting structure 5 is a stainless steel elastic sheet, and the welding spot is extruded to be tightly attached to the inner wall of the stainless steel pipe 2.
And fixing the thermocouple and the solder fixing structure by spot welding. And placing the solder between the thermocouple and the welding spot fixing structure, and melting and forming by using a high-frequency welding machine and a copper induction coil. And polishing the welding spot to remove the oxide layer and the redundant soldering flux. And spot welding the welding spot supporting structure on the back of the welding spot fixing structure. And the end of the thermocouple penetrates into the position to be welded in the steel pipe. And (3) coating paste soldering flux on the surface of the formed solder in advance, and locally heating the position of the solder point outside the steel pipe by using a high-frequency welding machine and a copper induction coil to melt the internal solder and then finishing heating. And after the steel pipe is cooled, polishing the outer surface of the steel pipe to remove the oxide layer, and finishing.
The solder is silver-copper solder with good heat conduction, and has a lower melting point compared with a structural member base material (stainless steel). The soldering flux is a paste silver-based soldering flux, so that the soldering flux can be conveniently coated before soldering and can completely cover the position of a soldering point. The welding material forming and fixing structure is formed by extruding a stainless steel sheet, and the designed structure is used for limiting the flowing position of the welding material in the steel pipe and fixing the shape of the welding material after being melted. The welding spot supporting structure is a stainless steel elastic sheet, the welding spot is extruded to be tightly attached to the inner wall of the steel pipe, and the elasticity is maintained at high temperature. The welding equipment is a high-frequency welding machine and a copper induction coil, and can perform fixed-point local heating on the steel pipe in the welding process. The auxiliary spot welding fixing mode is resistance spot welding and is used for fixing the structural part outside the steel pipe in advance. The welding flux, the welding flux fixing structure and the welding spot supporting structure are fixed before penetrating into the steel pipe, and the welding flux is melted in advance to be formed into a required shape.
Claims (3)
1. The utility model provides a welded structure that is used for brazed stainless steel pipe inner wall which characterized in that: the metal thermocouple and the solder fixing structure are fixed in a spot welding mode, and the silver-copper solder is arranged between the metal thermocouple and the solder fixing structure; the welding spot supporting structure is fixed on the back of the welding flux fixing structure in a spot welding manner; the end of the metal thermocouple penetrates into a position to be welded in the stainless steel pipe.
2. The welding structure for brazing the inner wall of the stainless steel pipe according to claim 1, wherein: the solder fixing structure is a stainless steel sheet.
3. The welding structure for brazing the inner wall of the stainless steel pipe according to claim 1, wherein: the welding spot supporting structure is a stainless steel elastic sheet, and the welding spot is extruded to be tightly attached to the inner wall of the stainless steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922314065.4U CN212286375U (en) | 2019-12-20 | 2019-12-20 | Welding structure for brazing inner wall of stainless steel pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922314065.4U CN212286375U (en) | 2019-12-20 | 2019-12-20 | Welding structure for brazing inner wall of stainless steel pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212286375U true CN212286375U (en) | 2021-01-05 |
Family
ID=73933537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922314065.4U Active CN212286375U (en) | 2019-12-20 | 2019-12-20 | Welding structure for brazing inner wall of stainless steel pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212286375U (en) |
-
2019
- 2019-12-20 CN CN201922314065.4U patent/CN212286375U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106938362B (en) | A kind of connection method of magnetic pulse formation assistant brazing metal tube | |
| CN102211235B (en) | Soldering method of heterogeneous stainless steel oil injection nozzle nut of engine | |
| CN105149720A (en) | Fixture used for braze welding of TZM alloy/ceramic sealing alloy butt-sealing structure for electronic vacuum tube and braze welding method | |
| CN109202202B (en) | Brazing furnace for capillary brazing and brazing process thereof | |
| CN202356772U (en) | Welding tool for copper tip of oxygen lance and short section of steel tube | |
| CN206732355U (en) | Electromagnetic pulse welder | |
| CN102225483A (en) | Welding method of vertically brazed joint of stainless steel conduit | |
| CN103343847A (en) | Copper aluminum tube and welding process thereof | |
| CN101318245A (en) | Tube fin brazing process and internal tube heating soldering machine for | |
| CN105290554B (en) | A kind of vacuum brazing technique of niobium tungsten alloy and stainless steel ring-shaped work pieces | |
| CN104057193B (en) | Pipeline fitting upset buttwelding method | |
| CN113909610A (en) | High-performance brazing method for third-generation single crystal high-temperature alloy | |
| CN106735984B (en) | A kind of temperature controller temperature sensing tube and capillary Welding method | |
| CN212286375U (en) | Welding structure for brazing inner wall of stainless steel pipe | |
| CN204094301U (en) | Copper pipe and device for welding aluminium pipe plumb joint in refrigeration plant | |
| CN207464397U (en) | A kind of welding fixture for lubricating oil pipe | |
| EP3090826A1 (en) | Deposition of braze preform | |
| CN106735895A (en) | A kind of method for laser welding of aluminium alloy glass composite | |
| CN106956053B (en) | A kind of vacuum brazing method of titanium alloy pipeline | |
| CN105643043A (en) | Tool and processing method used for precise induction brazing of annular thin-walled part | |
| CN206236610U (en) | A kind of temperature controller temperature sensing tube and capillary soldering interface structure | |
| CN108237278B (en) | welding method of copper-molybdenum electrode | |
| CN212443624U (en) | Brazing device of shell-and-tube heat exchanger | |
| CN213318215U (en) | Auxiliary clamp for bar vacuum brazing | |
| CN107476958A (en) | A kind of compressor air suction structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |