CN218761952U - Brazed plug-in type pipe fitting - Google Patents
Brazed plug-in type pipe fitting Download PDFInfo
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- CN218761952U CN218761952U CN202222570869.2U CN202222570869U CN218761952U CN 218761952 U CN218761952 U CN 218761952U CN 202222570869 U CN202222570869 U CN 202222570869U CN 218761952 U CN218761952 U CN 218761952U
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Abstract
The utility model discloses a brazed plug-in type pipe fitting, including outer sleeve spare and interior sleeve spare, the tip of outer sleeve spare is the echelonment through-hole, the echelonment through-hole includes big through-hole and little through-hole, the part that interior sleeve spare inserted in the big through-hole is the linkage segment, the linkage segment includes vertical section and the turn-ups section of vertical section tip to the flanging, the tip excircle diameter of turn-ups section is less than big through-hole diameter, circle diameter is greater than little through-hole diameter in the tip of turn-ups section, welding space scope between vertical section and the big through-hole is 0.08 ~ 0.3mm. The utility model discloses having improved the pipe fitting quality of brazing, having guaranteed the clearance between interior sleeve part and the outer sleeve part, having made the metal of brazing can get into the clearance to form good welding seam, improve joint strength between interior sleeve part and the outer sleeve part.
Description
Technical Field
The utility model belongs to the technical field of the brazing and specifically relates to a brazed plug-in type pipe fitting.
Background
The most important is plug-in type brazing, namely the pipe is inserted into the joint or other pipes, a certain gap is reserved between the pipe and the joint or other pipes, the gap is regulated to be 0.08-0.3 mm according to German brazing standard H0340, and the gap between the pipe and the joint is filled by utilizing the flow of brazing material to realize the tight connection of the pipe and the joint under the action of molecular force. However, during welding, one side of the inner sleeve is tightly attached to the inner wall of the outer sleeve under the action of the self gravity, so that one side has no gap, the gap on one side is too large, the gap exceeds the specified welding gap range of 0.08-0.3 mm, the brazing condition is deteriorated, brazing metal cannot enter the gap, a good welding seam cannot be formed, and the strength of a joint is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the technical problem that needs to solve provides a brazed plug-in type pipe fitting, has improved the pipe fitting quality of brazing, has guaranteed the clearance between interior sleeve part and the outer sleeve part, makes the metal of brazing can get into the clearance to form good welding seam, improve and connect intensity between inner sleeve part and the outer sleeve part.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: the utility model provides a brazed plug-in type pipe fitting, includes outer casing spare and interior sleeve part, the tip of outer casing spare is the echelonment through-hole, the echelonment through-hole includes big through-hole and little through-hole, the part that interior sleeve part inserted in the big through-hole is the welded segment, the welded segment includes vertical section and vertical section tip turn-ups section to the turn-ups, the tip excircle diameter of turn-ups section is less than big through-hole diameter, the circle diameter is greater than little through-hole diameter in the tip of turn-ups section, the welding gap scope between vertical section and the big through-hole is 0.08 ~ 0.3mm.
The utility model discloses technical scheme's further improvement lies in: the vertical height range of the flanging section is 0.5mm-1mm.
The utility model discloses technical scheme's further improvement lies in: the included angle range of the flanging section and the horizontal direction is 30-60 degrees.
Due to the adoption of the technical scheme, the utility model discloses the technological progress who gains is:
1. the utility model improves the pipe fitting brazing quality, ensures the clearance between the inner sleeve and the outer sleeve, and ensures that brazing metal can enter the clearance, thereby forming a good welding seam and improving the joint strength between the inner sleeve and the outer sleeve;
2. the utility model discloses an inside casing spare welding section's the outside flanging process of tip makes interior casing spare have from the effect of line core, has guaranteed interior casing spare and outer casing spare all around gapped and the clearance satisfies the weld clearance scope of stipulating 0.08 ~ 0.3mm when the welding.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of the outer sleeve member of the present invention;
FIG. 3 is a schematic view of the inner sleeve member of the present invention;
FIG. 4 is a schematic structural view of an outer sleeve according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a prior art insert-brazed inner sleeve member having an inner wall adjacent to one side of the outer sleeve member;
the device comprises an outer sleeve piece, an inner sleeve piece, a stepped through hole, a large through hole, a small through hole, a vertical section and a flanging section, wherein the outer sleeve piece is 1, the inner sleeve piece is 2, the stepped through hole is 3, the large through hole is 4, the small through hole is 5, and the vertical section is 6.
Detailed Description
The present invention will be described in further detail with reference to the following examples:
as shown in fig. 1 to 3, a brazed plug-in pipe fitting comprises an outer sleeve member 1 and an inner sleeve member 2, wherein the end of the outer sleeve member 1 is a stepped through hole, the stepped through hole comprises a large through hole 3 and a small through hole 4, the part of the inner sleeve member 2 inserted into the large through hole 3 is a welding section, the welding section comprises a vertical section 5 and a flanging section 6, the end of the vertical section 5 is flanged outwards, the vertical height of the flanging section 6 is in the range of 0.5mm-1mm, and the included angle between the flanging section 6 and the horizontal direction is in the range of 30-60 degrees. The diameter of the outer circle of the end part of the flanging section 6 is smaller than that of the large through hole 3, the diameter of the inner circle of the end part of the flanging section 6 is larger than that of the small through hole 4, the range of the welding gap between the vertical section 5 and the large through hole 3 is 0.08-0.3 mm, and the welding gap range of 0.08-0.3 mm is met.
Examples
In this embodiment, the outer sleeve 1 is a drum-shaped joint, the inner sleeve 2 is a hollow cylindrical pipe, and a pipe end forming machine is used to form a flange at the end of the welded section of the hollow cylindrical pipe before welding, as shown in fig. 3, the diameter D of the vertical section 5 of the inner sleeve 2 is phi 10, and a flange with a vertical height H of 0.8mm, an included angle alpha range of 45 degrees with the horizontal direction and an excircle diameter a of phi 10.3mm is formed by flanging the end of the welded section of the inner sleeve 2. As shown in FIG. 4, the diameter B of the large through hole 3 of the outer sleeve member 1 is 10.4mm, so that the welding gap between the vertical section 5 and the large through hole 3 is in the range of 0.15 to 0.25mm, and the gap is in the size range of 0.08 to 0.3mm as specified by the brazing standard H0340. As shown in fig. 5, if the end of the welded segment of the inner sleeve member 2 is not flanged outward, the inner sleeve member 2 approaches the inner wall of the outer sleeve member 1 after assembly, and the size of the gap C is 10.4 to 10=0.4mm, which exceeds the size range of 0.08 to 0.3mm of the gap specified by the brazing standard H0340, and the brazing quality is affected.
In the embodiment, the size of A is smaller than that of B by 0.1mm, so that smooth loading can be ensured, the core can be automatically fixed during assembly, and the assembly gap is ensured to be within the range specified by the standard.
The utility model discloses an inside casing pipe 2's the outside turn-ups processing of welding section tip makes interior casing pipe 2 have from the effect of line core, has guaranteed interior casing pipe 2 and outer casing pipe 1 all around when the welding gapped and the clearance satisfies the welding clearance scope of regulation 0.08 ~ 0.3mm.
The utility model discloses having improved the pipe fitting quality of brazing, having guaranteed the clearance between interior sleeve part 2 and the outer sleeve part 1, having made the metal of brazing can get into the clearance to form good welding seam, improve and connect intensity between interior sleeve part 2 and the outer sleeve part 1.
Claims (3)
1. The utility model provides a brazed plug-in type pipe fitting which characterized in that: including outer casing spare (1) and interior sleeve part (2), the tip of outer casing spare (1) is the echelonment through-hole, the echelonment through-hole includes big through-hole (3) and little through-hole (4), the part that interior sleeve part (2) inserted in big through-hole (3) is the welding section, the welding section includes vertical section (5) and vertical section (5) tip turn-ups section (6) to the turn-ups, the tip excircle diameter of turn-ups section (6) is less than big through-hole (3) diameter, the tip inner circle diameter of turn-ups section (6) is greater than little through-hole (4) diameter, the welding gap range between vertical section (5) and big through-hole (3) is 0.08 ~ 0.3mm.
2. A brazed plug-in pipe according to claim 1, wherein: the vertical height range of the flanging section (6) is 0.5mm-1mm.
3. A brazed bayonet tube as claimed in claim 1, wherein: the included angle between the flanging section (6) and the horizontal direction is 30-60 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222570869.2U CN218761952U (en) | 2022-09-28 | 2022-09-28 | Brazed plug-in type pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222570869.2U CN218761952U (en) | 2022-09-28 | 2022-09-28 | Brazed plug-in type pipe fitting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218761952U true CN218761952U (en) | 2023-03-28 |
Family
ID=85696140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222570869.2U Active CN218761952U (en) | 2022-09-28 | 2022-09-28 | Brazed plug-in type pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218761952U (en) |
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2022
- 2022-09-28 CN CN202222570869.2U patent/CN218761952U/en active Active
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