CN220228179U - Pipe fitting hard joint structure based on friction welding - Google Patents
Pipe fitting hard joint structure based on friction welding Download PDFInfo
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- CN220228179U CN220228179U CN202322322165.8U CN202322322165U CN220228179U CN 220228179 U CN220228179 U CN 220228179U CN 202322322165 U CN202322322165 U CN 202322322165U CN 220228179 U CN220228179 U CN 220228179U
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- pipe fitting
- annular groove
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- 238000003466 welding Methods 0.000 title claims abstract description 67
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
- 239000010959 steel Substances 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims abstract description 15
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Abstract
The utility model relates to the technical field of pipe joints, in particular to a hard joint structure of a pipe fitting based on friction welding; the female joint is designed into a structure formed by combining a main body section and a welding section through friction welding, the main body section is made of steel materials with high hardness, the welding section is made of steel materials with low hardness, the structural strength of the main body section is ensured by the high hardness of the main body section, and the material of the welding section has good ductility, so that interference fit with a male joint can be better carried out, and the tightness of an interface is improved; because the female joint and the male joint are locked through the nuts, the welding part does not reduce the overall structural strength of the joint. Through the improvement, the hardness and the structural strength of the steel pipe fitting joint can be ensured, and the tightness of the joint seam of the joint of the male and female joints can be improved.
Description
Technical Field
The utility model relates to the technical field of pipe joints, in particular to a hard joint structure of a pipe fitting based on friction welding.
Background
The existing steel pipe joint is single in material, for enhancing the structural strength of a steel pipe fitting, generally, 45 # steel with larger hardness is integrally selected, because the 45 # steel is higher in carbon content and high in hardness, but poor in ductility, the pipe fitting joint comprises a male joint and a female joint, one end of the female joint is required to be provided with an internal thread structure, the male joint is required to be provided with a corresponding external thread structure, the male joint and the female joint are connected through the matching of external threads and internal threads, and in the connecting mode, gaps are easy to appear at the joint of the male joint and the female joint due to the high hardness and the poor ductility of the pipe, so that the sealing performance is poor.
Therefore, how to improve the structure of the steel pipe fitting joint, not only can ensure the hardness and the structural strength of the steel pipe fitting joint, but also can improve the tightness of the joint seam of the male and female joints, and the technical problem to be solved is urgent.
Disclosure of Invention
The technical problems to be solved by the utility model are as follows: how to improve the structure of the steel pipe fitting joint, not only can the hardness and the structural strength of the steel pipe fitting joint be ensured, but also the tightness of the joint of the male joint and the female joint can be improved.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the utility model provides a pipe fitting hard joint structure based on friction welding, includes the female joint, the female joint includes main part section and welding section, and the welding section welds in the X to the end of main part section through friction welding's mode, the steel hardness of welding section is less than the steel hardness of main part section.
Further, in the pipe fitting hard joint structure based on friction welding, the main body section is made of No. 45 steel, and the welding section is made of No. 20 steel.
Further, in the pipe fitting hard joint structure based on friction welding, a first annular groove is formed in the outer circumferential side of the welding section;
the female joint further comprises a nut, and a second annular groove matched with the first annular groove is formed in the inner side, close to the X-direction opposite end, of the nut; the X-direction opposite end of the nut is sleeved on the welding section, so that the second annular groove and the first annular groove form a circular cavity, and a through hole communicated with the second annular groove is formed in the outer side of the nut;
the circular ring cavity is connected with a limit steel wire;
and an internal thread is arranged at the X-direction end of the nut.
Further, in the pipe fitting hard joint structure based on friction welding, the pipe fitting hard joint structure further comprises a male joint, and an external thread matched with the internal thread is arranged on the outer circumference side of the X-direction reverse end of the male joint.
Further, in the pipe fitting hard joint structure based on friction welding, the X-direction end of the welding section is provided with a first conical connecting surface; the X-direction opposite end of the male connector is provided with a second conical connecting surface matched with the first conical connecting surface.
The utility model has the beneficial effects that: in the pipe fitting hard joint structure based on friction welding, the female joint is designed to be a structure formed by combining the main body section and the welding section through friction welding, the main body section is made of steel materials with high hardness, the welding section is made of steel materials with low hardness, the structural strength of the main body section is ensured by the high hardness of the main body section, the material of the welding section has good ductility, interference fit with the male joint can be better carried out, and the tightness of the joint is improved; because the female joint and the male joint are locked through the nuts, the welding part does not reduce the overall structural strength of the joint. Through the improvement, the hardness and the structural strength of the steel pipe fitting joint can be ensured, and the tightness of the joint seam of the joint of the male and female joints can be improved.
Drawings
FIG. 1 is a schematic illustration of a partial structure of a female joint of a friction welding-based pipe hard joint construction according to an embodiment of the present utility model;
FIG. 2 is a schematic view of a friction welded pipe fitting hard joint structure according to an embodiment of the present utility model in a butted state of a male joint and a female joint;
description of the reference numerals:
1. a female joint; 11. a main body section; 12. a welding section; 13. a first annular groove; 14. a nut; 141. a through hole; 15. a circular ring cavity; 16. a first tapered connection surface; 17. a welding part;
2. a male connector; 21. and a second tapered connection surface.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present utility model in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 and 2, the embodiment of the utility model relates to a hard joint structure of a pipe fitting based on friction welding, comprising a female joint 1, wherein the female joint 1 comprises a main body section 11 and a welding section 12, the welding section 12 is welded to an X-direction end of the main body section 11 in a friction welding manner by referring to a welding part 17 described in fig. 1, and the steel hardness of the welding section 12 is smaller than that of the main body section 11.
In the above embodiments, the X-direction is defined as being parallel to the axial direction of the male connector 2 or the female connector 1, referring to fig. 1 and 2.
In the above embodiment, in the pipe fitting hard joint structure based on friction welding according to the present utility model, the female joint 1 is designed to be a structure in which the main body section 11 and the welding section 12 are combined by friction welding, the main body section 11 is made of steel material with high hardness, the welding section 12 is made of steel material with low hardness, the high hardness of the main body section 11 ensures the structural strength thereof, and the material of the welding section 12 has good ductility, so that interference fit with the male joint 2 can be better performed, and the tightness at the joint is improved; since the female joint 1 and the male joint 2 are locked by the nut 14, the welded portion 17 does not cause a decrease in the overall structural strength of the joint. Through the improvement, the hardness and the structural strength of the steel pipe fitting joint can be ensured, and the tightness of the joint of the male and female joints 1 can be improved.
Preferably, the material of the main body section 11 is steel No. 45, and the material of the welding section 12 is steel No. 20.
In this embodiment, the outer circumferential side of the welding section 12 is provided with a first annular groove 13;
the female joint 1 further comprises a nut 14, and a second annular groove matched with the first annular groove 13 is formed in the inner side, close to the X-direction opposite end, of the nut 14; the X-direction opposite end of the nut 14 is sleeved on the welding section 12, so that a second annular groove and the first annular groove 13 form a circular ring cavity 15, and a through hole 141 communicated with the second annular groove is formed in the outer side of the nut 14;
the circular ring cavity 15 is connected with a limit steel wire;
the nut 14 is provided with an internal thread at the X-direction end.
In this embodiment, the pipe fitting hard joint structure further includes a male joint 2, and an external thread matching the internal thread is provided on an outer circumferential side of an X-direction opposite end of the male joint 2.
In this embodiment, a first conical connecting surface 16 is provided at the X-direction end of the welding section 12; the opposite end of the male connector 2 in the X direction is provided with a second conical connecting surface 21 which is matched with the first conical connecting surface 16.
In the above embodiment, when the male connector 2 and the female connector 1 need to be connected with each other through the nut 14, the X-direction opposite end of the nut 14 is first sleeved on the X-direction end of the female connector 1, so that the annular cavity 15 is formed between the first annular groove 13 and the second annular groove, then the steel wire is penetrated through the through hole 141, so that the steel wire fills the annular cavity 15, a fixed connection between the nut 14 and the female connector 1 is formed, then the X-direction end of the nut 14 and the X-direction opposite end of the male connector 2 are connected through the fit of internal and external threads, so that the first tapered connection surface 16 and the second tapered connection surface 21 are in interference fit with each other, and the material of the transition section of the female connector 1 has good ductility, so that the first tapered connection surface 16 and the second tapered connection surface 21 are in tight interference fit, and the tightness of the connector is improved.
Example 1
Referring to fig. 1 to 2, a hard joint structure of a pipe fitting based on friction welding includes a female joint 1, the female joint 1 includes a main body section 11 and a welding section 12, the welding section 12 is welded at an X-direction end of the main body section 11 in a friction welding manner, the main body section 11 is made of steel No. 45, and the welding section 12 is made of steel No. 20. The outer circumferential side of the welding section 12 is provided with a first annular groove 13; the female joint 1 further comprises a nut 14, and a second annular groove matched with the first annular groove 13 is formed in the inner side, close to the X-direction opposite end, of the nut 14; the X-direction opposite end of the nut 14 is sleeved on the welding section 12, so that a second annular groove and the first annular groove 13 form a circular ring cavity 15, and a through hole 141 communicated with the second annular groove is formed in the outer side of the nut 14; the circular ring cavity 15 is connected with a limit steel wire; the nut 14 is provided with an internal thread at the X-direction end. The pipe fitting hard joint structure further comprises a male joint 2, and an external thread matched with the internal thread is arranged on the outer circumference side of the X-direction reverse end of the male joint 2. The X-direction end of the welding section 12 is provided with a first conical connecting surface 16; the opposite end of the male connector 2 in the X direction is provided with a second conical connecting surface 21 which is matched with the first conical connecting surface 16.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent changes made by the specification and drawings of the present utility model, or direct or indirect application in the relevant art, are included in the scope of the present utility model.
Claims (5)
1. The utility model provides a pipe fitting hard joint structure based on friction welding, its characterized in that, including the female joint, the female joint includes main part section and welding section, and the welding section welds in the X to the end of main part section through friction welding's mode, the steel hardness of welding section is less than the steel hardness of main part section.
2. The friction welding-based pipe fitting hard joint structure according to claim 1, wherein the material of the main body section is steel No. 45, and the material of the welding section is steel No. 20.
3. A friction welding-based pipe hard joint structure according to claim 1, wherein,
the outer circumferential side of the welding section is provided with a first annular groove;
the female joint further comprises a nut, and a second annular groove matched with the first annular groove is formed in the inner side, close to the X-direction opposite end, of the nut; the X-direction opposite end of the nut is sleeved on the welding section, so that the second annular groove and the first annular groove form a circular cavity, and a through hole communicated with the second annular groove is formed in the outer side of the nut;
the circular ring cavity is connected with a limit steel wire;
and an internal thread is arranged at the X-direction end of the nut.
4. A pipe fitting hard joint structure based on friction welding according to claim 3, further comprising a male joint provided with an external thread matching the internal thread on the outer circumferential side of the X-direction opposite end thereof.
5. The friction welding-based pipe hard joint structure according to claim 4, wherein the X-direction end of the welding section is provided with a first tapered connection surface; the X-direction opposite end of the male connector is provided with a second conical connecting surface matched with the first conical connecting surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322322165.8U CN220228179U (en) | 2023-08-29 | 2023-08-29 | Pipe fitting hard joint structure based on friction welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322322165.8U CN220228179U (en) | 2023-08-29 | 2023-08-29 | Pipe fitting hard joint structure based on friction welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220228179U true CN220228179U (en) | 2023-12-22 |
Family
ID=89174102
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322322165.8U Active CN220228179U (en) | 2023-08-29 | 2023-08-29 | Pipe fitting hard joint structure based on friction welding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220228179U (en) |
-
2023
- 2023-08-29 CN CN202322322165.8U patent/CN220228179U/en active Active
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