CN223331322U - High-pressure oil pipe leak protection connection structure - Google Patents
High-pressure oil pipe leak protection connection structureInfo
- Publication number
- CN223331322U CN223331322U CN202422986294.1U CN202422986294U CN223331322U CN 223331322 U CN223331322 U CN 223331322U CN 202422986294 U CN202422986294 U CN 202422986294U CN 223331322 U CN223331322 U CN 223331322U
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- pressure oil
- oil pipe
- diameter
- flange
- hole
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Abstract
The utility model relates to the technical field of sealing structures, in particular to a high-pressure oil pipe leakage-proof connecting structure which comprises a high-pressure oil pipe, a mounting flange, a flange core and a sealing ring, wherein the high-pressure oil pipe, the mounting flange and the flange core are all made of steel, the high-pressure oil pipe is clamped between the mounting flange and the flange core, the sealing ring is arranged between the flange core and the high-pressure oil pipe and on the end face of the flange core, which is far away from the high-pressure oil pipe, a flaring structure is arranged at the end part of the high-pressure oil pipe, the flaring angle 1 of the flaring structure is 37 degrees, a first equal-diameter pipe hole, a conical hole and a second equal-diameter pipe hole with the diameter being continuously increased are sequentially arranged in a through hole of the mounting flange, a pipe body of the high-pressure oil pipe is positioned in the first equal-diameter pipe hole, the flaring structure of the high-pressure oil pipe is positioned in the conical hole, the conical angle 2 of the conical hole is 37 degrees, the diameter of the second equal-diameter pipe hole is larger than the maximum diameter of the conical hole, the outer peripheral surface of the flange core is sequentially arranged as the first equal-diameter annular surface with the diameter being continuously increased, the conical surface and the conical surface is stretched into the pipe body of the high-pressure oil pipe, and the flaring structure of the conical surface is stretched into the first equal-diameter ring, and the conical surface is stretched into the conical surface of the first equal-pressure ring, and the conical surface is 3 degrees, and the conical surface is stretched out of the flange, and the diameter of the flange is more than the conical surface is larger than the diameter than the conical ring. The high-pressure oil pipe leakage-proof connecting structure has the advantages of good sealing performance, simple structure and low manufacturing and using cost.
Description
Technical Field
The utility model relates to the technical field of sealing structures, in particular to a high-pressure oil pipe leakage-proof connecting structure.
Background
A large number of high-pressure oil pipes are arranged in the profile extruder, the high-pressure oil pipes are communicated with the high-pressure related parts by means of connecting structures, and the tightness of the connecting structures influences normal conveying and pressure transmission of the high-pressure oil.
In order to realize the sealing connection between the high-pressure oil pipes, special high-pressure oil pipe joints are needed in the past, but the purchase cost of the high-pressure oil pipe joints is higher, and the manufacturing cost of the profile extruder is further increased. Therefore, some new leak-proof connection structures are designed in the prior art, but these leak-proof connection structures are either complex in structure or easy to leak oil, and have low reliability. Therefore, it is necessary to design a leak-proof connection structure that is better than the use effect.
Disclosure of utility model
The utility model aims to provide a high-pressure oil pipe leakage-proof connecting structure, and aims to solve the problem that the high-pressure oil pipe leakage-proof connecting structure in the prior art is low in reliability.
In order to achieve the aim, the utility model provides a high-pressure oil pipe leakage-proof connecting structure which comprises a high-pressure oil pipe, a mounting flange, a flange core and a sealing ring, wherein the high-pressure oil pipe, the mounting flange and the flange core are all made of steel, the high-pressure oil pipe is clamped between the mounting flange and the flange core, the sealing ring is arranged between the flange core and the high-pressure oil pipe and on the end face of the flange core, which is far away from the high-pressure oil pipe, a flaring structure is arranged at the end of the high-pressure oil pipe, the flaring angle of the flaring structure is 37 degrees, a first equal-diameter pipe hole, a conical hole and a second equal-diameter pipe hole with the diameters being continuously increased are sequentially arranged in a through hole of the mounting flange, a pipe body of the high-pressure oil pipe is positioned in the first equal-diameter pipe hole, the flaring structure of the high-pressure oil pipe is positioned in the conical hole, the conical angle of the conical angle 2 of the conical hole is 37 degrees, the diameter of the second equal-diameter pipe hole is larger than the maximum diameter of the conical hole, the outer peripheral surface of the flange core is sequentially arranged as a first equal-diameter annular surface with the diameters being continuously increased, the conical surface and the conical surface of the first equal-diameter ring is sequentially, the flaring structure of the first equal-diameter ring is stretched into the conical pipe body of the high-pressure oil pipe, and the flaring structure is stretched into the conical pipe when the conical structure is stretched out of the flange core, and the flange is 3 is stretched along the axial direction, and the flange is more than the flange is mounted along the direction, and the largest, and when the flange is mounted.
Further, a first stepped structure is formed between the conical hole and the second equal diameter pipe hole, a second stepped structure is formed between the conical surface and the second equal diameter ring surface, and when the mounting flange and the flange core clamp the high pressure oil pipe, a gap exists between the first stepped structure and the second stepped structure.
Further, the diameter of the second constant diameter tube bore is greater than the outer diameter of the flare structure.
Further, the diameter of the second constant diameter orifice is greater than the diameter of the second constant diameter annulus.
Further, the conical surface is provided with a first annular groove for placing the sealing ring.
Further, a plurality of circumferential recesses are provided in the flaring structure at positions opposite the first annular groove.
Further, the flange core is provided with a second annular groove for placing a sealing ring far away from the end face of the high-pressure oil pipe, the second annular groove is taken as a boundary, the end face of the high-pressure oil pipe is provided with an outer end face positioned outside the second annular groove and an inner end face positioned inside the second annular groove, and the outer end face stretches out of the mounting flange more than the inner end face in the axial direction of the high-pressure oil pipe.
Further, the thickness H3 of the outer end face is 3mm-5mm, the value of the outer end face extending out of the mounting flange is more than the value of the inner end face extending out of the mounting flange by H2, and the value of H2 is 0.3mm-0.5mm.
Further, the value H1 of the flange core extending out of the mounting flange along the axial direction of the high-pressure oil pipe is 2mm-3mm.
The leakage-proof connecting structure of the high-pressure oil pipe has the advantages that the sealing effect is improved by specially designing the flaring angle of the flaring structure, the taper of the taper hole and the taper of the taper surface, meanwhile, part of flange cores are arranged to extend out of the mounting flange along the axial direction of the high-pressure oil pipe, and two adjacent flange cores or the flange cores and oil outlet equipment can be tightly attached together when the flange is screwed, so that even if manufacturing errors of parts occur, the extending parts can compensate errors, and the sealing effect is improved. Compared with the prior art, the high-pressure oil pipe leakage-proof connecting structure has the advantages of good sealing performance, simple structure and low manufacturing and using cost.
Drawings
FIG. 1 is an overall cross-sectional view of a leak-proof connection structure for a high pressure oil pipe of the present utility model;
FIG. 2 is an enlarged view of a portion at A of FIG. 1;
FIG. 3 is a cross-sectional view of the high pressure tubing;
FIG. 4 is a cross-sectional view of a mounting flange;
FIG. 5 is a cross-sectional view of a flange core;
FIG. 6 is a partial enlarged view at B in FIG. 3;
Fig. 7 is a partial enlarged view at C in fig. 5.
Reference numerals illustrate:
1. a high pressure oil pipe; 11, flaring structure 12, circumference concave;
2. The mounting flange, the first equal diameter pipe hole, the 22, the taper hole, the 23, the second equal diameter pipe hole, the 24, the first ladder structure;
3. The flange core, 31, a first equal-diameter ring surface, 32, a conical surface, 33, a second equal-diameter ring surface, 34, a second stepped structure, 35, a first ring groove, 36, a second ring groove, 37, an outer end surface, 38 and an inner end surface;
4. A gap.
Detailed Description
The following describes embodiments of the present utility model in detail.
In this embodiment, where terms such as "disposed," "connected," "coupled," and "connected" are used in a broad sense, they may be, for example, fixedly, detachably, or integrally connected, and may be directly connected or connected via one or more intermediaries, unless otherwise specifically stated and defined. The specific meaning of the terms described above in the present embodiment can be understood by those skilled in the art according to the specific circumstances. The direction words appearing in the embodiment are to better explain the characteristics of the features and the relationships between the features, and it should be understood that when the arrangement direction of the embodiment is changed, the directions of the characteristics of the features and the relationships between the features are correspondingly changed, so that the direction words do not form an absolute limitation effect on the characteristics of the features and the relationships between the features in the space, but only a relative limitation effect.
The utility model provides a high-pressure oil pipe leakage-proof connecting structure, which is shown in figures 1 to 7 and comprises a high-pressure oil pipe 1, a mounting flange 2, a flange core 3 and a sealing ring (not shown in the figures), wherein the high-pressure oil pipe 1, the mounting flange 2 and the flange core 3 are all made of steel, the high-pressure oil pipe 1 is clamped between the mounting flange 2 and the flange core 3, the sealing ring is arranged between the flange core 3 and the high-pressure oil pipe 1 and on the end face of the flange core 3 far away from the high-pressure oil pipe 1, the end part of the high-pressure oil pipe 1 is provided with a flaring structure 11, the flaring angle 1 of the flaring structure 11 is 37 degrees, a first equal-diameter pipe hole 21, a conical hole 22 and a second equal-diameter pipe hole 23 with continuously increasing diameters are sequentially arranged in a through hole of the mounting flange 2, a pipe body of the high-pressure oil pipe 1 is positioned in the first equal-diameter pipe hole 21, the conical hole 22 and the conical hole 22 is 37 degrees, the diameter of the first equal-diameter pipe 23 is larger than the maximum diameter of the conical hole 22, the outer peripheral face of the flange core 3 is sequentially arranged as the flaring surface of the first equal-diameter ring surface 31, and the flaring angle 2 is sequentially arranged in the axial direction of the flange 1 is larger than the first equal-diameter 32, and the first equal-diameter 32 is larger than the first equal-diameter 32, and the diameter 32 is arranged in the axial direction is larger than the flange 1, and the flange 1 is 3, and the diameter is larger than the diameter 32.
The high-pressure oil pipe leakage-proof connecting structure realizes sealing by means of mutual clinging between parts, after two adjacent high-pressure oil pipe leakage-proof connecting structures are combined, the sealing effect is continuously improved along with tightening between the mounting flange 2 and the mounting flange 2, but dimensional errors can be avoided when the parts of the high-pressure oil pipe leakage-proof connecting structure are manufactured, and the sealing effect can be influenced even not to be sealed, so that part of flange cores 3 are arranged to extend out of the mounting flange 2 along the axial direction of the high-pressure oil pipe 1, and the two adjacent flange cores 3 or the flange cores 3 and oil outlet equipment can be tightly attached together during tightening, so that even if manufacturing errors of the parts occur, errors can be compensated by virtue of the extending parts, and the sealing effect is ensured. Meanwhile, the external expansion angle of the flaring structure 11, the taper of the taper hole 22 and the taper of the taper surface 32 are specially designed, and the sealing effect under the angle is optimal through test verification.
In this embodiment, a first stepped structure 24 is formed between tapered bore 22 and second constant diameter bore 23, and a second stepped structure 34 is formed between tapered face 32 and second constant diameter annulus 33. When mounting flange 2 and flange core 3 clamp high pressure tubing 1, a gap 4 exists between first stepped structure 24 and second stepped structure 34. The presence of the gap 4 enables the parts to deform when the leak-proof connection is tightened.
In this embodiment, the diameter of the second constant diameter tube bore 23 is greater than the outer diameter of the flared structure 11, and the diameter of the second constant diameter tube bore 23 is greater than the diameter of the second constant diameter annulus 33. Based on the above structure setting for it is more convenient when putting into mounting flange 2 to high-pressure oil pipe 1, and high-pressure oil pipe 1 has certain activity space when mounting flange 2 is not screwed up moreover, and the effort of centering can be played to high-pressure oil pipe 1 to the cooperation of each toper structure when mounting flange 2 is screwed up, and high-pressure oil pipe 1 can move to mounting flange 2's axis better, in order to improve sealing performance.
In this embodiment, the conical surface 32 is provided with a first ring groove 35 for placing a sealing ring. A plurality of circumferential recesses 12 are provided at positions of the flaring 11 opposite to the first annular groove 35. Based on the above structure, when the whole set of leakage-proof connecting structure is installed in place, the circumferential recess 12 extrudes and positions the sealing ring, so that the sealing ring is not easy to deviate, and the sealing performance is improved.
In the present embodiment, the end surface of the flange core 3 away from the high pressure oil pipe 1 is provided with a second annular groove 36 for placing a seal ring, and the end surface of the high pressure oil pipe 1 is provided with an outer end surface 37 located outside the second annular groove 36 and an inner end surface 38 located inside the second annular groove 36, with the second annular groove 36 being defined, and the outer end surface 37 protrudes from the mounting flange 2 more than the inner end surface 38 in the axial direction of the high pressure oil pipe 1. If the end face of the flange core 3 far away from the high pressure oil pipe 1 is arranged to be planar, when the end face of the flange core 3 is uneven or inclined due to manufacturing errors, the two end faces cannot be closely attached when the two flange cores 3 are abutted, or the flange core 3 is offset so that other places cannot be closely attached, which affects the sealing performance. For this reason, the present embodiment provides the outer end surface 37 protruding slightly from the inner end surface 38, and the outer end surface 37 is designed to be thinner, which makes the outer end surface 37 easily deformed, and in use, as the mounting flange 2 is continuously screwed down, and since the end surface of the flange core 3 is abutted against the external object or the other flange core 3, this makes the outer end surface 37 deformed, the outer end surface 37 can be more closely attached to the external object or the other flange core 3 after being deformed, so that the sealability between the flange core 3 and the external object or the other flange core 3 is ensured.
In this embodiment, the value H1 of the protrusion of the flange core 3 from the mounting flange 2 in the axial direction of the high pressure oil pipe 1 is 2mm to 3mm. The thickness H3 of the outer end surface 37 is 3mm-5mm, the value of the outer end surface 37 protruding from the mounting flange 2 is more H2 than the value of the inner end surface 38 protruding from the mounting flange 2, and H2 is 0.3mm-0.5mm. The above size range is a preferable range, and has a preferable sealing performance.
In conclusion, the high-pressure oil pipe leakage-proof connecting structure has the advantages of good sealing performance, simple structure and low manufacturing and using cost.
The above-described embodiments and features of the embodiments may be combined with each other without conflict.
Finally, it should be noted that the above embodiments are only intended to illustrate the preferred technical solution of the present utility model, but not to limit the scope of the present utility model, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solution of the present utility model without departing from the spirit and scope of the present utility model.
Claims (9)
1. The high-pressure oil pipe leakage-proof connecting structure is characterized by comprising a high-pressure oil pipe (1), a mounting flange (2), a flange core (3) and a sealing ring, wherein the high-pressure oil pipe (1), the mounting flange (2) and the flange core (3) are all made of steel, the high-pressure oil pipe (1) is clamped between the mounting flange (2) and the flange core (3), and the sealing ring is arranged between the flange core (3) and the high-pressure oil pipe (1) and on the end surface, far away from the high-pressure oil pipe (1), of the flange core (3);
The end part of the high-pressure oil pipe (1) is provided with a flaring structure (11), and the flaring angle 1 of the flaring structure (11) is 37 degrees;
The through hole of the mounting flange (2) is sequentially provided with a first equal-diameter pipe hole (21), a conical hole (22) and a second equal-diameter pipe hole (23) with the diameters being continuously increased, the pipe body of the high-pressure oil pipe (1) is positioned in the first equal-diameter pipe hole (21), the flaring structure (11) of the high-pressure oil pipe (1) is positioned in the conical hole (22), the taper angle 2 of the conical hole (22) is 37 degrees, and the diameter of the second equal-diameter pipe hole (23) is larger than the maximum diameter of the conical hole (22);
The outer peripheral surface of the flange core (3) is sequentially provided with a first equal-diameter annular surface (31), a conical surface (32) and a second equal-diameter annular surface (33) with the diameters being continuously increased, the first equal-diameter annular surface (31) stretches into the pipe body of the high-pressure oil pipe (1), the conical surface (32) is propped against the flaring structure (11) of the high-pressure oil pipe (1), the taper angle 3 of the conical surface (32) is 37 degrees, and the diameter of the second equal-diameter annular surface (33) is larger than the maximum diameter of the conical surface (32);
When the mounting flange (2) and the flange core (3) clamp the high-pressure oil pipe (1), part of the flange core (3) extends out of the mounting flange (2) along the axial direction of the high-pressure oil pipe (1).
2. The leak-proof connecting structure for high-pressure oil pipe according to claim 1, wherein a first stepped structure (24) is formed between the tapered hole (22) and the second equal diameter pipe hole (23), a second stepped structure (34) is formed between the tapered surface (32) and the second equal diameter ring surface (33), and a gap (4) exists between the first stepped structure (24) and the second stepped structure (34) when the mounting flange (2) and the flange core (3) clamp the high-pressure oil pipe (1).
3. The leak-proof connecting structure for high-pressure oil pipe as defined in claim 1, wherein the diameter of the second constant diameter pipe hole (23) is larger than the outer diameter of the flaring structure (11).
4. The leak-proof connecting structure for a high-pressure oil pipe as defined in claim 1, wherein the diameter of the second equivalent diameter pipe hole (23) is larger than the diameter of the second equivalent diameter annular surface (33).
5. The leak-proof connecting structure for high-pressure oil pipe as defined in claim 1, wherein the tapered surface (32) is provided with a first annular groove (35) for placing a seal ring.
6. The leak-proof connecting structure for high-pressure oil pipe as defined in claim 5, wherein a plurality of circumferential recesses (12) are provided at positions of the flaring structure (11) opposite to the first annular groove (35).
7. The leak-proof connection structure for a high-pressure oil pipe according to claim 1, wherein the end surface of the flange core (3) away from the high-pressure oil pipe (1) is provided with a second ring groove (36) for placing a seal ring, the end surface of the high-pressure oil pipe (1) is provided with an outer end surface (37) located outside the second ring groove (36) and an inner end surface (38) located inside the second ring groove (36), and the outer end surface (37) is protruded from the mounting flange (2) than the inner end surface (38) in the axial direction of the high-pressure oil pipe (1).
8. The leak-proof connecting structure for a high-pressure oil pipe as defined in claim 7, wherein the thickness H3 of the outer end face (37) is 3mm to 5mm, the value of the outer end face (37) protruding from the mounting flange (2) is greater than the value of the inner end face (38) protruding from the mounting flange (2) by H2, and H2 is 0.3mm to 0.5mm.
9. The leak-proof connecting structure for high-pressure oil pipe as defined in any one of claims 1 to 8, characterized in that the value H1 of the flange core (3) extending from the mounting flange (2) in the axial direction of the high-pressure oil pipe (1) is 2mm to 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422986294.1U CN223331322U (en) | 2024-12-05 | 2024-12-05 | High-pressure oil pipe leak protection connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202422986294.1U CN223331322U (en) | 2024-12-05 | 2024-12-05 | High-pressure oil pipe leak protection connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223331322U true CN223331322U (en) | 2025-09-12 |
Family
ID=96983519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202422986294.1U Active CN223331322U (en) | 2024-12-05 | 2024-12-05 | High-pressure oil pipe leak protection connection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223331322U (en) |
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2024
- 2024-12-05 CN CN202422986294.1U patent/CN223331322U/en active Active
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