CN216590386U - Sealing joint structure free of steel pipe welding - Google Patents
Sealing joint structure free of steel pipe welding Download PDFInfo
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- CN216590386U CN216590386U CN202122610983.9U CN202122610983U CN216590386U CN 216590386 U CN216590386 U CN 216590386U CN 202122610983 U CN202122610983 U CN 202122610983U CN 216590386 U CN216590386 U CN 216590386U
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- steel pipe
- sealing
- nut
- joint
- conical surface
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Abstract
The utility model discloses a sealing joint structure free of steel pipe welding, which comprises a joint and a nut, wherein the joint is inserted into the nut for connection; the steel pipe penetrates through the nut, and a bushing is arranged between the outer side of the steel pipe and the nut; the sealing body, the axial setting is between joint and steel pipe, and the radial outside in both ends of sealing body is provided with first conical surface and second conical surface, the one end opening part of joint be provided with first flaring portion, the tip opening part of steel pipe be provided with the second flaring portion, first flaring portion and first conical surface between be provided with first sealing washer, second flaring portion and second conical surface between be provided with the second sealing washer. The utility model has simple structure and can solve the problems of pipeline welding and low pressure bearing of the flared pipeline.
Description
Technical Field
The utility model relates to the field of hydraulic component pipeline accessories, in particular to a sealing joint structure free of steel pipe welding.
Background
When steel pipes are connected on equipment pipelines, the low-pressure pipelines in the existing industry are connected in a flaring mode, and the high-pressure pipelines or the ultrahigh-pressure pipelines are connected in a welding mode; the welding is easy to generate air holes to cause leakage, the welding also causes influence on the environment (the environment is influenced by acid washing, phosphorization, paint spraying or plastic spraying after the welding), and the welding also causes influence on the cleanliness of the pipeline (the existing hydraulic industry develops to high-pressure and high-precision control, and the pipeline cleanliness is the basis); the flared seal is hard, so that the flared seal is difficult to bear high pressure due to the influence of flaring precision. Therefore, a new sealing joint structure is needed to meet the requirement of the high-pressure pipeline, the production efficiency can be improved, and the assembly is simple.
SUMMERY OF THE UTILITY MODEL
The utility model provides a sealing joint structure free of steel pipe welding, which is simple in structure and can solve the problems of pipeline welding and low pressure bearing of a flared pipeline.
In order to achieve the purpose, the utility model provides the following technical scheme: a sealing joint structure free of steel pipe welding comprises:
the joint is inserted into the nut for connection;
the steel pipe penetrates through the nut, and a bushing is arranged between the outer side of the steel pipe and the nut;
the sealing body, the axial setting is between joint and steel pipe, and the radial outside in both ends of sealing body is provided with first conical surface and second conical surface, the one end opening part of joint be provided with first flaring portion, the tip opening part of steel pipe be provided with the second flaring portion, first flaring portion and first conical surface between be provided with first sealing washer, second flaring portion and second conical surface between be provided with the second sealing washer.
Preferably, the outer side of one end of the bushing is provided with a limiting step, the end part of the nut is provided with a through hole, and the limiting step is abutted against the inner edge of the through hole.
Preferably, a taper hole part is arranged on the inner side of one end of the limiting step on the bushing, and the taper hole part is abutted against the outer side surface of the second flaring part.
Preferably, the joint and the nut are axially connected through threads.
Preferably, the first sealing ring and the second sealing ring are respectively embedded in the grooves on the first conical surface and the second conical surface.
Preferably, the first sealing ring and the second sealing ring are both O-shaped sealing rings, and the cross-sectional area of the first sealing ring is larger than that of the second sealing ring.
Compared with the prior art, the utility model has the beneficial effects that:
the sealing structure has the advantages that the structure is simple, the sealing body combined by the flared sealing structure and the welding type sealing structure is used for solving the problems of pipeline welding and low flared pipeline pressure bearing, the joint is a welding type joint body, the sealing body is connected with flared parts at two ends, the two ends are both sealed by O-shaped rings, the O-shaped rings cannot bear high pressure in the packing sealing process, the gap between the sealing surfaces is larger, the pressure bearing capacity is weaker, the sealing body has a hard sealing function, the sealing contact gap is zero, the sealing body can bear high pressure or ultrahigh pressure, the sealing body is connected to testing equipment, and the service life of the sealing body exceeds that of the welding and the common flared sealing structure.
Drawings
FIG. 1 is an assembled cross-sectional structural view of the present invention;
fig. 2 is an exploded sectional structural view of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be 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 a part of the embodiments of the present invention, and not all of the embodiments.
As shown in fig. 1-2, the present invention provides a sealing joint structure without welding steel pipes, comprising: the joint comprises a joint 1 and a nut 5, wherein the joint 1 is inserted into the nut 5 for connection, preferably, the joint 1 and the nut 5 are axially connected through threads, and the joint is used for connecting hydraulic elements such as a pump or a valve.
The steel pipe 7 passes through the nut 5, a bushing 6 is arranged between the outer side of the steel pipe 7 and the nut 5, the bushing 6 is used as a limiting object between the steel pipe 7 and the nut 5, and the axial distance between the steel pipe 7 and the nut 5 can be limited, so that when the joint 1 and the nut 5 are close to each other, the steel pipe 7 can be clamped through the bushing 6.
In this embodiment, the sealing body 3 is a main component, and is axially disposed between the joint 1 and the steel pipe 7, the first tapered surface 31 and the second tapered surface 32 are disposed at the radial outer side of the two ends of the sealing body 3, the first flared portion 11 is disposed at the opening at one end of the joint 1, the second flared portion 71 is disposed at the opening at the end of the steel pipe 7, the first sealing ring 2 is disposed between the first flared portion 11 and the first tapered surface 31, and the second sealing ring 4 is disposed between the second flared portion 71 and the second tapered surface 32, preferably, the first sealing ring 2 and the second sealing ring 4 are respectively embedded in the grooves on the first tapered surface 31 and the second tapered surface 32, so as to prevent the first sealing ring 2 and the second sealing ring 4 from shifting, facilitate installation and sealing, and improve the sealing effect, the first sealing ring 2 and the second sealing ring 4 are equivalent to double-layer sealing, the liquid passing through the steel pipe 7 and the joint 1 can be prevented from entering the space between the packing 3 and the nut 5.
Preferably, the first seal ring 2 and the second seal ring 4 are both O-shaped seal rings, and the cross-sectional area of the first seal ring 2 is larger than that of the second seal ring 4, because the taper of the first tapered surface 31 is smaller than that of the second tapered surface 32, the sealing requirement at the first tapered surface 31 is higher, the first seal ring 2 with a larger cross-sectional area is required, whether the O-shaped seal ring can bear high pressure depends on the gap between the two seal surfaces, and the taper angle hard seal in the double-acting seal can eliminate the gap between the two seal surfaces, so that the seal body can bear high pressure.
In this embodiment, as an alternative of the bushing 6, a limit step 61 is disposed at an outer side of one end of the bushing 6, the end of the nut 5 is provided with the through hole 51, the limit step 61 abuts against an inner edge of the through hole 51, the axial distance between the bushing 6 and the nut 5 can be relatively limited by the abutment between the limit step 61 and the through hole 51, meanwhile, a tapered hole portion 62 is disposed at an inner side of one end of the bushing 6 located at the limit step 61, the tapered hole portion 62 abuts against an outer side surface of the second flared portion 71, and the other end of the bushing 6 abuts against the second flared portion 71, so that the steel pipe 7 can be axially moved.
The utility model provides a simple structure, the sealed body that adopts flaring formula sealed and welding formula seal structure to combine together solves the problem of pipeline welding problem and the not high problem of flaring formula pipeline pressure-bearing, the joint adopts the welding formula to connect the body, the sealed body is connected with the flaring portion at both ends, both ends are connected and are all adopted O shape circle to seal, and the sealed reason that can not bear highly compressed of O shape circle in the packing is, clearance between the sealed face, the bigger bearing capacity is weaker more in the clearance, and the sealed body has hard sealing function concurrently, and its sealed contact clearance is zero, so it can bear high pressure or superhigh pressure, be connected to the test equipment with the sealed body, its life-span surpasss welding and ordinary flaring formula.
Claims (5)
1. The utility model provides a exempt from steel pipe welded sealing joint structure which characterized in that includes:
the connector comprises a connector (1) and a nut (5), wherein the connector (1) is inserted into the nut (5) for connection;
the steel pipe (7) penetrates through the nut (5), and a lining (6) is arranged between the outer side of the steel pipe (7) and the nut (5);
the sealing body (3), the axial setting is between joint (1) and steel pipe (7), and the radial outside in both ends of sealing body (3) is provided with first conical surface (31) and second flaring portion (32), the one end opening part of joint (1) be provided with first flaring portion (11), the tip opening part of steel pipe (7) be provided with second flaring portion (71), first flaring portion (11) and first conical surface (31) between be provided with first sealing washer (2), second flaring portion (71) and second flaring portion (32) between be provided with second sealing washer (4), the one end outside of bush (6) be provided with spacing step (61), the tip of nut (5) be provided with perforation (51), spacing step (61) offset with the inboard bead of perforation (51).
2. The steel pipe welding-free sealing joint structure according to claim 1, wherein: a taper hole part (62) is arranged on the inner side of one end, located on the limiting step (61), of the bushing (6), and the taper hole part (62) is abutted to the outer side face of the second flaring part (71).
3. The steel pipe welding-free sealing joint structure according to claim 1, wherein: the joint (1) and the nut (5) are axially connected through threads.
4. The seal joint structure free of steel pipe welding according to claim 1, characterized in that: the first sealing ring (2) and the second sealing ring (4) are respectively embedded in grooves on the first conical surface (31) and the second conical surface (32).
5. The steel pipe welding-free sealing joint structure according to claim 4, wherein: the first sealing ring (2) and the second sealing ring (4) are O-shaped sealing rings, and the cross-sectional area of the first sealing ring (2) is larger than that of the second sealing ring (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122610983.9U CN216590386U (en) | 2021-10-28 | 2021-10-28 | Sealing joint structure free of steel pipe welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122610983.9U CN216590386U (en) | 2021-10-28 | 2021-10-28 | Sealing joint structure free of steel pipe welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216590386U true CN216590386U (en) | 2022-05-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122610983.9U Active CN216590386U (en) | 2021-10-28 | 2021-10-28 | Sealing joint structure free of steel pipe welding |
Country Status (1)
| Country | Link |
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| CN (1) | CN216590386U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163938A (en) * | 2022-06-24 | 2022-10-11 | 东风（十堰）汽车管业有限公司 | Sealing structure for vehicle-mounted hydrogen supply system |
| CN115638295A (en) * | 2022-09-28 | 2023-01-24 | 阿格思(苏州)流体动力科技有限公司 | Flaring type steel pipe assembly and production device |
-
2021
- 2021-10-28 CN CN202122610983.9U patent/CN216590386U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163938A (en) * | 2022-06-24 | 2022-10-11 | 东风（十堰）汽车管业有限公司 | Sealing structure for vehicle-mounted hydrogen supply system |
| CN115638295A (en) * | 2022-09-28 | 2023-01-24 | 阿格思(苏州)流体动力科技有限公司 | Flaring type steel pipe assembly and production device |
| CN115638295B (en) * | 2022-09-28 | 2023-10-10 | 阿格思(苏州)流体动力科技有限公司 | Flaring type steel pipe assembly and production device |
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