CN217030391U - Novel high-pressure movable elbow - Google Patents
Novel high-pressure movable elbow Download PDFInfo
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- CN217030391U CN217030391U CN202220699203.4U CN202220699203U CN217030391U CN 217030391 U CN217030391 U CN 217030391U CN 202220699203 U CN202220699203 U CN 202220699203U CN 217030391 U CN217030391 U CN 217030391U
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Abstract
The utility model discloses a novel high-pressure movable elbow, which belongs to the technical field of chemical high-pressure pipelines and comprises a male joint, a female joint and an elbow main body consisting of a first elbow and a second elbow, wherein the first elbow is connected with the second elbow in a sealing way through a first sealing assembly; the second elbow is connected with the female joint in a sealing mode through a third sealing assembly, the female joint, the second elbow, the first elbow and the male joint are sequentially connected in an inserting mode in a rotating mode, and a first sealing ring is arranged in an orifice of the male joint; the outer side wall thickness of the first elbow and the second elbow is larger than the inner side wall thickness, the strength of the elbow is improved, and the service life of the elbow is prolonged. The utility model has the characteristics of flexibility, shock resistance, good pressure resistance and sealing, is convenient to transport and store, and is suitable for high-pressure discharge pipelines, input pipelines, temporary liquid flow pipelines, well testing pipelines and other acidic operation environments for conveying liquid flow under high-pressure working conditions.
Description
Technical Field
The utility model belongs to the technical field of chemical high-pressure pipelines, and particularly relates to a novel high-pressure movable elbow.
Background
The high-pressure movable elbow is a common product for connecting pipelines and sand washing in oil field well repairing, well cementing and fracturing operations, and has the characteristics of changeable adjusting directions, quick connection, reasonable structure, small volume, light weight, good sealing performance, safety, reliability and convenient operation. However, in recent years, as petroleum reserves are becoming less and less, the difficulty of exploitation has increased. Because the high-pressure movable elbow is a fragile and consumable product in a fracturing pipeline, the existing high-pressure movable elbow is frequently used, and quality problems such as puncture and burst and the like caused by erosion damage of pipe fittings such as the movable elbow and the like can often occur in the fracturing process. The main reason for this is that the strength and impact toughness of the product are insufficient. Therefore, it is urgently needed to develop a high-pressure elbow with good impact resistance and shock resistance.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that the defects of the prior art are overcome, and the novel high-pressure movable elbow has the characteristics of pressure-resistant sealing, impact resistance and vibration resistance, can be assembled and disassembled quickly, and is flexible and convenient to use.
In order to solve the technical problems, the technical scheme adopted by the utility model is as follows:
a novel high-pressure movable elbow comprises an elbow main body, a male joint and a female joint, wherein the elbow main body comprises a first elbow and a second elbow, the first elbow is connected with the second elbow in a sealing mode through a first sealing assembly, the other end of the first elbow is connected with the male joint in a sealing mode through a second sealing assembly, and the other end of the second elbow is connected with an airfoil nut through the female joint; the second elbow is connected with the female joint in a sealing mode through a third sealing assembly, the female joint, the second elbow, the first elbow and the male joint are sequentially connected in an inserting mode in a rotating mode, and a first sealing ring is arranged in an orifice of the male joint; the thickness of the outer side walls of the first elbow and the second elbow is larger than that of the inner side walls, and the outer side walls of the first elbow and the second elbow are smoothly transited to the inner side walls.
Preferably, the male joint is inserted into a movable joint A of the first elbow, the first elbow is inserted into a movable joint B of the second elbow, the second elbow is inserted into a movable joint C of the female joint, oil injection holes are formed in the side walls of the movable joint A, the movable joint B and the movable joint C, and oil plugs are arranged in the oil injection holes and used for respectively injecting oil into the movable joint A, the movable joint B and the movable joint C for lubrication.
Preferably, the first sealing assembly comprises a second sealing ring, a steel ball, a spring retainer ring for the hole, a steel ball plug and a third sealing ring, the second sealing ring is arranged inside the movable joint B, and the second sealing ring is abutted against the tail end of the first elbow; the number of the steel balls is a plurality of steel balls, the steel balls are arranged in a roller path formed between the movable joint B and the connecting end of the first elbow, and the oil injection hole is arranged corresponding to the roller path; the side wall of the movable joint B is provided with a mounting hole through which a steel ball can pass, the steel ball plug is arranged in the mounting hole, the hole spring retainer is arranged in an annular groove on the inner wall of the mounting hole, and the hole spring retainer is arranged outside the steel ball plug; the inner end and the outer end of the movable joint B are respectively in sealing fit with the connecting end of the first elbow through two third sealing rings, and the steel ball is arranged between the two third sealing rings; the second sealing assembly, the third sealing assembly and the first sealing assembly are identical in structure.
Preferably, the raceway between the movable joint B and the connecting end of the first elbow is a three-step unequal-diameter raceway, and the raceways are correspondingly arranged on the surfaces of the movable joint B matched with the steel ball and the connecting end of the first elbow matched with the steel ball; the raceways in the second sealing assembly and the third sealing assembly are the same as the raceway in the first sealing assembly, and are three-step different-diameter raceways.
Preferably, a sealing groove matched with the third sealing ring is arranged on the outer wall of the connecting end of the first elbow.
Preferably, the first seal ring and the second seal ring are both union seal rings, and the third seal ring is a good-type seal ring.
Preferably, the wing-shaped nut is connected with the female joint through a connecting assembly, the connecting assembly comprises a fan-shaped check ring and a spring collar, the fan-shaped check ring is of a multi-petal structure, more than two openings are formed in the side wall of the fan-shaped check ring, and a clamping groove matched with the spring collar is formed in the outer wall of the upper end of the fan-shaped check ring; the outer wall of the lower end of the fan-shaped check ring is provided with a boss, an inner hole of the wing-shaped nut is provided with a step matched with the boss, and the outer wall of the lower end of the female joint is provided with a limiting convex eaves used for limiting the fan-shaped check ring.
Preferably, the internal thread of the wing nut and the external thread of the male connector are both trapezoidal threads.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: compared with the prior art, the utility model adopts the first elbow and the second elbow which can relatively rotate and are hermetically connected to form the elbow main body, meanwhile, the other end of the first elbow is rotatably and hermetically connected with the male joint, the other end of the second elbow is rotatably and hermetically connected with the female joint, one end of the female joint is connected with a pipeline through the wing-shaped nut during specific operation, the quick tightening and the quick dismounting can be realized, and the pressure-resistant sealing performance is good; the outer side wall thickness of the first elbow and the second elbow is larger than the inner side wall thickness, so that the strength of the elbow can be improved, and the service life of the elbow can be prolonged. The utility model adopts the female joint, the second elbow, the first elbow and the male joint which are sequentially connected in an inserting and rotating way, and the elbows adopt unequal-diameter wall thicknesses, have the characteristics of flexibility, impact resistance and vibration resistance, are convenient to transport and store, and can be used for high-pressure discharge pipelines, input pipelines, temporary liquid flow pipelines, well testing pipelines and other acidic operating environments for conveying liquid flows under high-pressure working conditions.
Drawings
Fig. 1 is a schematic structural view of a novel high-pressure movable elbow provided by an embodiment of the utility model;
FIG. 2 is a top view of a segmented retainer ring in accordance with an embodiment of the present invention;
in the figure: 1-wing nut, 2-sector retainer ring, 3-spring retainer ring, 4-female joint, 5-second sealing ring, 6-steel ball, 7-hole spring retainer ring, 8-steel ball plug, 9-third sealing ring, 10-elbow body, 10 a-first elbow, 10 b-second elbow; 11-oil plug, 12-first sealing ring, 13-male connector, 14-opening, 15-limiting convex brim.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and do not limit the utility model.
As shown in fig. 1, the novel high-pressure movable elbow provided by the utility model comprises an elbow main body 10, a male joint 13 and a female joint 4, wherein the elbow main body 10 comprises a first elbow 10a and a second elbow 10b, the first elbow 10a is connected with the second elbow 10b in a sealing manner through a first sealing assembly, the other end of the first elbow 10a is connected with the male joint 13 in a sealing manner through a second sealing assembly, and the other end of the second elbow 10b is connected with a wing nut 1 through the female joint 4; the second elbow 10b is connected with the female joint 4 in a sealing manner through a third sealing assembly, the female joint 4, the first elbow 10a, the second elbow 10b and the male joint 13 are sequentially connected in an inserting manner and a rotating manner, and a first sealing ring 12 is arranged in an orifice of the male joint 13; the thickness of the outer side wall of the first elbow 10a and the second elbow 10b is larger than that of the inner side wall, and the outer side walls of the first elbow and the second elbow are smoothly transited to the inner side walls. The movable elbow adopting the scheme has the characteristics of pressure sealing, high impact strength and long service life.
In an embodiment of the present invention, as shown in fig. 1, the male joint 13 is inserted into the movable joint a of the first elbow 10a, the first elbow 10a is inserted into the movable joint B of the second elbow 10B, the second elbow 10B is inserted into the movable joint C of the female joint 4, oil holes are respectively disposed on sidewalls of the movable joint a, the movable joint B and the movable joint C, and oil plugs 11 are disposed in the oil holes for respectively injecting oil into the movable joint a, the movable joint B and the movable joint C for lubrication. The first sealing assembly comprises a second sealing ring 5, a steel ball 6, a spring retainer ring 7 for a hole, a steel ball plug 8 and a third sealing ring 9, the second sealing ring 5 is arranged inside the movable joint B, and the second sealing ring 5 is abutted against the tail end of the first elbow 10 a; the steel balls 6 are arranged in a roller path formed between the movable joint B and the connecting end of the first elbow 10a, the oil injection hole is arranged corresponding to the roller path, and oil is injected into the roller path through the oil injection hole so as to lubricate the steel balls; the side wall of the movable joint B is provided with a mounting hole through which the steel ball 6 can pass, the steel ball plug 8 is arranged in the mounting hole, the hole spring retainer ring 7 is arranged in an annular groove on the inner wall of the mounting hole, the hole spring retainer ring 7 is arranged outside the steel ball plug 8, and the hole spring retainer ring 7 blocks the steel ball 6 in the raceway through the steel ball plug 8; the inner end and the outer end of the movable joint B are respectively in sealing fit with the connecting end of the first elbow 10a through two third sealing rings 9, and the steel ball 6 is arranged between the two third sealing rings 9; the second sealing assembly, the third sealing assembly and the first sealing assembly are identical in structure. The female joint, the second elbow, the first elbow and the male joint are sequentially sealed through the second sealing ring 5, the steel ball 6 and the third sealing ring 9 in the corresponding sealing assemblies and can rotate 360 degrees, the sealing performance of the elbows is effectively guaranteed on the premise of ensuring flexible use, and the corrosion resistance of the elbows is improved.
Further optimizing the technical scheme, as shown in fig. 1, a raceway between the movable joint B and the connecting end of the first elbow 10a is a three-step unequal-diameter raceway, and the raceways are correspondingly arranged on the surfaces of the movable joint B matched with the steel ball 6 and the connecting end of the first elbow 10a matched with the steel ball 6; the raceways in the second sealing assembly and the third sealing assembly are the same as the raceway in the first sealing assembly and are three-step different-diameter raceways; the three-step unequal-diameter roller paths are three roller paths arranged in parallel and are mutually independent; each raceway is provided with a mounting hole for mounting a steel ball. During assembly, the steel balls 6 respectively enter the corresponding roller paths from the three mounting holes, and after the steel balls 6 enter the corresponding roller paths, the three mounting holes are sealed by the steel ball plugs 8 to prevent the steel balls from falling; and finally, the hole spring retainer ring 7 is clamped in an annular groove in the mounting hole, so that the steel ball plug 8 is prevented from falling off from the mounting hole. According to the erosion analysis of the high-pressure fluid control element, the stress state of the connecting part of the movable elbow is improved by adopting the three-step unequal-diameter roller path, the maximum stress is reduced by 35 percent compared with the conventional structure, the strength of the movable elbow is greatly improved, and the service life of the movable elbow is prolonged.
During manufacturing, a sealing groove matched with the third sealing ring 9 is formed in the outer wall of the connecting end of the first elbow 10 a; the first sealing ring 12 and the second sealing ring 5 are union sealing rings which are made of elastic materials such as rubber and are used for sealing between two metal surfaces; the third seal ring 9 is a good type seal ring. The internal thread of the wing nut 1 and the external thread of the male joint 13 are both trapezoidal threads, and the wing nut has the advantages of high connection strength and difficulty in loosening. The common high-pressure movable elbow is 10 type or 50 type, the flow is large, and the internal thread of the wing nut 1 and the external thread of the male joint 13 usually adopt ACME threads, so that the high-pressure movable elbow has the characteristics of good universality and interchangeability.
In one embodiment of the present invention, as shown in fig. 1, the wing nut 1 is connected to the female connector 4 through a connecting assembly, so as to be able to be quickly tightened and removed; the connecting assembly comprises a fan-shaped check ring 2 and a spring collar 3, the fan-shaped check ring 2 is of a multi-petal structure, more than two openings 14 are uniformly distributed on the side wall of the fan-shaped check ring, and the fan-shaped check ring shown in the figure 2 has 3 openings; the outer wall of the upper end of the fan-shaped retainer ring 2 is provided with a clamping groove matched with the spring retainer ring 3; the outer wall of the lower end of the fan-shaped retainer ring 2 is provided with a boss, the inner hole of the wing-shaped nut 1 is provided with a step matched with the boss, and the outer wall of the lower end of the female joint 4 is provided with a limiting convex eaves 15 used for limiting the fan-shaped retainer ring 2. Adopt the spacing protruding eaves of female joint lower extreme and the step of wing section nut hole to carry on spacingly to fan-shaped retaining ring, recycle the spring rand can with fan-shaped retaining ring chucking on the outer wall of female joint, link to each other with treating connecting tube through wing section nut, ensure firm in connection.
When the elbow is manufactured specifically, the first elbow and the second elbow are processed by adopting an extrusion forging process, the process is commonly used for processing automobile parts, the inner bend and the outer bend of the elbow processed by adopting the process are all subjected to extrusion upsetting, the wall thickness outside the elbow pipe body is properly increased under the condition of meeting the stress of the inner wall, the metallographic structure of the material cannot be damaged, the grain size grade is fine, the mechanical property is obviously improved, and therefore the service life of the elbow is prolonged.
In conclusion, the high-pressure movable elbow provided by the utility model adopts the movable joint A, the movable joint B and the movable joint C which are sequentially connected, has the characteristics of flexibility, impact resistance, vibration resistance and large flow, is connected by the wing nut, has the characteristics of quick assembly and disassembly and pressure-resistant sealing, and is convenient to transport, store and use; the three steps of unequal-diameter ball paths at the movable connection part are matched with the steel ball, and the first elbow and the second elbow both adopt unequal-diameter sections, so that the strength of the movable elbow is improved, and the service life of the movable elbow is prolonged; meanwhile, the first elbow and the second elbow are processed by adopting an extrusion forging process, so that the mechanical property of the first elbow and the second elbow can be improved, and the service life of the first elbow and the second elbow can be further prolonged. The utility model is particularly applicable to high-pressure discharge pipelines, input pipelines, temporary liquid flow pipelines, well testing pipelines and other acidic working environments for conveying liquid flows under high-pressure working conditions.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a novel high pressure activity elbow which characterized in that: the elbow comprises an elbow main body, a male joint and a female joint, wherein the elbow main body comprises a first elbow and a second elbow, the first elbow is connected with the second elbow in a sealing mode through a first sealing assembly, the other end of the first elbow is connected with the male joint in a sealing mode through a second sealing assembly, and the other end of the second elbow is connected with a wing-shaped nut through the female joint; the second elbow is connected with the female joint in a sealing mode through a third sealing assembly, the female joint, the second elbow, the first elbow and the male joint are sequentially connected in an inserting mode in a rotating mode, and a first sealing ring is arranged in an orifice of the male joint; the thickness of the outer side walls of the first elbow and the second elbow is larger than that of the inner side walls, and the outer side walls of the first elbow and the second elbow are smoothly transited to the inner side walls.
2. The novel high-pressure movable elbow according to claim 1, characterized in that: the male joint is inserted into a movable joint A of the first elbow, the first elbow is inserted into a movable joint B of the second elbow, the second elbow is inserted into a movable joint C of the female joint, oil filling holes are formed in the side walls of the movable joint A, the movable joint B and the movable joint C, and oil plugs are arranged in the oil filling holes and used for respectively filling oil into the movable joint A, the movable joint B and the movable joint C for lubrication.
3. The novel high-pressure movable elbow according to claim 2, characterized in that: the first sealing assembly comprises a second sealing ring, a steel ball, a spring retainer ring for a hole, a steel ball plug and a third sealing ring, the second sealing ring is arranged inside the movable joint B, and the second sealing ring is abutted against the tail end of the first elbow; the number of the steel balls is a plurality of steel balls, the steel balls are arranged in a roller path formed between the movable joint B and the connecting end of the first elbow, and the oil injection hole is arranged corresponding to the roller path; the side wall of the movable joint B is provided with a mounting hole through which a steel ball can pass, the steel ball plug is arranged in the mounting hole, the hole spring retainer is arranged in an annular groove on the inner wall of the mounting hole, and the hole spring retainer is arranged outside the steel ball plug; the inner end and the outer end of the movable joint B are respectively in sealing fit with the connecting end of the first elbow through two third sealing rings, and the steel ball is arranged between the two third sealing rings; the second sealing assembly, the third sealing assembly and the first sealing assembly are identical in structure.
4. The novel high-pressure movable elbow according to claim 3, wherein: the raceway between the movable joint B and the connecting end of the first elbow is a three-step unequal-diameter raceway which is correspondingly arranged on the surface where the movable joint B is matched with the steel ball and the connecting end of the first elbow is matched with the steel ball; the raceways in the second sealing assembly and the third sealing assembly are the same as the raceway in the first sealing assembly and are three-step unequal-diameter raceways; the three-step unequal-diameter roller paths are three roller paths which are arranged in parallel, and each roller path is provided with a mounting hole for mounting a steel ball.
5. The novel high-pressure movable elbow according to claim 3, wherein: and a sealing groove matched with the third sealing ring is arranged on the outer wall of the connecting end of the first elbow.
6. The novel high-pressure movable elbow according to claim 3, wherein: the first sealing ring and the second sealing ring are union sealing rings, and the third sealing ring is a good-quality sealing ring.
7. The novel high-pressure movable elbow according to claim 1, characterized in that: the wing-shaped nut is connected with the female joint through a connecting assembly, the connecting assembly comprises a fan-shaped check ring and a spring collar, the fan-shaped check ring is of a multi-petal structure, more than two openings are formed in the side wall of the fan-shaped check ring, and a clamping groove matched with the spring collar is formed in the outer wall of the upper end of the fan-shaped check ring; the fan-shaped check ring is characterized in that a boss is arranged on the outer wall of the lower end of the fan-shaped check ring, a step used for being matched with the boss is arranged in an inner hole of the wing-shaped nut, and a limiting convex eaves used for limiting the fan-shaped check ring is arranged on the outer wall of the lower end of the female joint.
8. The novel high-pressure movable elbow according to any one of claims 1-7, characterized in that: the threads of the wing nut and the male connector are both trapezoidal threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220699203.4U CN217030391U (en) | 2022-03-28 | 2022-03-28 | Novel high-pressure movable elbow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220699203.4U CN217030391U (en) | 2022-03-28 | 2022-03-28 | Novel high-pressure movable elbow |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217030391U true CN217030391U (en) | 2022-07-22 |
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ID=82411908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220699203.4U Active CN217030391U (en) | 2022-03-28 | 2022-03-28 | Novel high-pressure movable elbow |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217030391U (en) |
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2022
- 2022-03-28 CN CN202220699203.4U patent/CN217030391U/en active Active
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