CN206513987U - A kind of movable elbow with multistage track groove - Google Patents
A kind of movable elbow with multistage track groove Download PDFInfo
- Publication number
- CN206513987U CN206513987U CN201720119044.5U CN201720119044U CN206513987U CN 206513987 U CN206513987 U CN 206513987U CN 201720119044 U CN201720119044 U CN 201720119044U CN 206513987 U CN206513987 U CN 206513987U
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- China
- Prior art keywords
- track groove
- circular arc
- raceway rings
- groove
- raceway
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Abstract
The utility model discloses a kind of movable elbow with multistage track groove, including female joint and pin end, female joint is sequentially provided with the first outer track groove, second outer track groove and the 3rd outer track groove, pin end is sequentially provided with track groove in corresponding first, track groove in track groove and the 3rd in second, track groove in first outer track groove and first, track groove in second outer track groove and second, track groove coordinates in 3rd outer track groove and the 3rd forms the first raceway rings respectively, second raceway rings and the 3rd raceway rings, first raceway rings, ball is filled up in second raceway rings and the 3rd raceway rings, first raceway rings are close to pin end import, female joint madial wall between first raceway rings and the second raceway rings is provided with outer cone anchor ring, pin end lateral wall is provided with inner cone anchor ring with outer cone ring face corresponding position, inner cone anchor ring and outer cone anchor ring formation ring cone.The utility model has the characteristics of track groove carries the movable elbow service life that distribution is rationally uniform, extension is with multistage track groove, can be widely applied to field of oil drilling.
Description
Technical field
The utility model is related to oil drilling, more particularly to a kind of movable elbow with multistage track groove.
Background technology
Movable elbow with multistage track groove is the important component of high pressure pipe joint, current main pressure grade is 42,
70th, 105, the types of 140MPa tetra-, pressure is bigger, and the combination property to the movable elbow with multistage track groove requires higher.
There is the excessive movable elbow with multistage track groove and occurs unexpected the failure even accident of explosion in Oil Field, this not only shadow
The operating efficiency and economic benefit of Oil Field are rung, can more cause personal safety to endanger staff.In order to evade to personnel
Personal safety harm, the movable elbow manufacturer with multistage track groove provided in the movable elbow with multistage track groove
Reach after regulation use time, it is necessary to which pressure is scrapped.At present, the movable elbow with multistage track groove of same model, domestic
Product price relative moderate, regulation use time about 500h；Imported from America product price is relatively expensive, but use time is up to
1200h。
The one of failure mode of movable elbow with multistage track groove is the crimp of track groove, degrades, worn and torn
The serious seal failure caused at main seal, causes leakage, and the movable elbow rotation with multistage track groove is dumb even
It is stuck.Reason is that existing structure has track groove load distribution non-uniform phenomenon seriously, and ball is contacted with track groove excessively to be collected
In cause contact stress it is excessive the shortcomings of.
Utility model content
The purpose of this utility model is to overcome the shortcomings of above-mentioned background technology there is provided a kind of with multistage track groove
Movable elbow, makes it have track groove and carries that distribution is more rationally and uniform, and reduces the contact stress of track groove, so that elongated strap
There is the service life of the movable elbow of multistage track groove.
A kind of movable elbow with multistage track groove that the utility model is provided, includes female joint and the public affairs of mutual cooperation
It is sequentially provided with the first outer track groove, the second outer track groove and in joint, the female joint vertically with the mating surface of pin end
Three outer track grooves, the pin end lateral wall is sequentially provided with track groove in corresponding first vertically, track groove and in second
Track groove in track groove in three, the first outer track groove and first, track groove in the second outer track groove and second, the 3rd outer roll
Track groove coordinates in road groove and the 3rd forms the first raceway rings, the second raceway rings and the 3rd raceway rings, first raceway respectively
Ball is filled up in ring, the second raceway rings and the 3rd raceway rings, first raceway rings are close to pin end import, first raceway
Female joint madial wall between ring and the second raceway rings is provided with outer cone anchor ring, the pin end lateral wall and outer cone ring face corresponding position
Provided with inner cone anchor ring, the inner cone anchor ring cooperatively forms ring cone with outer cone anchor ring.
In the above-mentioned technical solutions, the female joint lateral wall and the second raceway rings and the 3rd raceway rings corresponding position are provided with ring
Set, the axial distance L between first raceway rings and the second raceway rings, between the second raceway rings and the 3rd raceway rings is ball
Twice of diameter, the end of the female joint outlet is provided with chamfering.
In the above-mentioned technical solutions, the section of each interior track groove is semicircle with ball diameter identical for diameter, each
The cross-sectional curve of outer track groove is made up of the first different circular arc of diameter and the second circular arc, and the radius R1 of first circular arc is more than
The radius R2 of second circular arc is big, and the radius R2 of second circular arc is identical with the radius of ball, first circular arc and the second circle
Arc is the circular arc that central angle is right angle, and the tie point of first circular arc and the second circular arc is the summit of outer track groove, described
The center of circle on summit, the center of circle of the second circular arc and the first circular arc be respectively positioned on straight line and the second circular arc the center of circle corresponding
The inner side in the first circular arc center of circle.
In the above-mentioned technical solutions, differences of the radius R1 of the first circular arc than the radius R2 of the second circular arc is 0.5mm.
In the above-mentioned technical solutions, the section both sides of each outer track groove and interior track groove are respectively equipped with rounding.
In the above-mentioned technical solutions, the first annular groove, the female joint and public access are provided with the inside of the pin end inlet end
The butting section that head inlet end offsets is provided with the second annular groove corresponding with the first annular groove, and first annular groove and the second annular groove coordinate
Formed and sealing ring is provided with closure gasket groove, the closure gasket groove.
In the above-mentioned technical solutions, the female joint is used for madial wall, sealing ring madial wall that fluid passes through with pin end
It is respectively positioned in the same face of cylinder.
The utility model carries the movable elbow of multistage track groove, has the advantages that：1. table in male and female joint is made
Face is concordant, reduces the axial force produced because of fluid pressure；2. ring is set to bore between first and second raceway rings so that first
Two fewer than second and third raceway rings of the ball number of raceway rings, it is twice of ball diameter to make the axial distance between raceway rings,
Appropriate increase female joint external diameter, sets chamfering in end face in female joint, makes the load distribution of first, second and third track groove more equal
It is even；3. the contour line of track groove is improved, the track groove diameter of pin end is identical with ball diameter, female joint track groove is two sections straight
The different circular arc in footpath, had so both ensured the smooth assembling of ball, ball is contacted with the initial contact type of track groove for face,
Reduce contact stress；4. trickle rounding is set in raceway groove edge, improves the stress concentration phenomenon of raceway groove edge；5. change
Enter end face seal structure so that the wall thickness increase of public access cephalic par, so as to improve the resistance to erosion ability of public access cephalic par.
Brief description of the drawings
Fig. 1 is the general structure schematic diagram for the movable elbow that the utility model carries multistage track groove；
Fig. 2 is the structure enlarged diagram at A in Fig. 1；
Fig. 3 is the structure enlarged diagram at B in Fig. 2.
Embodiment
Below in conjunction with the accompanying drawings and embodiment is described in further detail to the utility model, but the embodiment should not be understood
For to limitation of the present utility model.
Referring to Fig. 1 to Fig. 2, the utility model carries the movable elbow of multistage track groove, includes the female joint 1 of mutual cooperation
With pin end 2, the mating surface in the female joint 1 with pin end 2 is sequentially provided with the first outer track groove, the second outer raceway vertically
Groove and the 3rd outer track groove, the lateral wall of pin end 2 are sequentially provided with track groove in corresponding first, raceway in second vertically
Track groove in track groove in groove and the 3rd, the first outer track groove and first, track groove, in the second outer track groove and second
Track groove coordinates in three outer track grooves and the 3rd forms the first raceway rings 31, the second raceway rings 32 and the 3rd raceway rings 33 respectively,
Ball 4 is filled up in first raceway rings 31, the second raceway rings 32 and the 3rd raceway rings 33, first raceway rings 31 are close to public
The madial wall of female joint 1 between the import of joint 2, the raceway rings 32 of the first raceway rings 31 and second is provided with outer cone anchor ring, described
The lateral wall of pin end 2 is provided with inner cone anchor ring with outer cone ring face corresponding position, and the inner cone anchor ring cooperatively forms ring cone with outer cone anchor ring
8.The lateral wall of female joint 1 and the second raceway rings 32 and the corresponding position of the 3rd raceway rings 33 are provided with ring set 9, first raceway rings
The 31 and axial distance L6 second between raceway rings 32, between the second raceway rings 32 and the 3rd raceway rings 33 is the diameter of ball 4
Twice, the end that the female joint 1 is exported is provided with chamfering 7.Ring cone 8 causes the number of ball 4 of the first raceway rings 31 than the second rolling
Road ring 32 is few two, and the axial distance 6 between adjacent track groove is twice of the diameter of ball 4, and ring set 9 increases female joint 1
Certain thickness, sets chamfering 7 in end in female joint 1, makes the load distribution of first, second and third raceway rings more uniform.
Referring to Fig. 3, the section of each interior track groove is semicircle with the diameter identical of ball 4 for diameter, each outer track groove
Cross-sectional curve be made up of the first different circular arc 12 of diameter and the second circular arc 10, the radius 15 of first circular arc 12 is more than the
The radiuses 13 of two circular arcs 10 is big, and the radius 13 of second circular arc 10 is identical with the radius of ball 4, first circular arc 12 and the
Two circular arcs 10 are the circular arc that central angle is right angle, and the tie point of the circular arc 10 of the first circular arc 12 and second is outer track groove
Summit, the summit, the center of circle of the circular arc 12 of the center of circle 17 and first of the second circular arc 10 are respectively positioned on straight line and the second circular arc
Inner side of 10 center of circle in the corresponding center of circle of first circular arc 12.The radius 13 of the circular arc of radius 15 to the second 10 of first circular arc 12
Difference 19 is 0.5mm.The fit-up gap of ball 4 was so both ensured, and ball 4 and the initial contact type of track groove is connect for face
Touch, reduce contact stress.The section both sides of each outer track groove and interior track groove are respectively equipped with rounding 18.Rounding 18 improves
The stress concentration phenomenon of raceway groove edge.
Referring to Fig. 2, the first annular groove 24 is provided with the inside of the inlet end of pin end 2, the female joint 1 is entered with pin end 2
The butting section that mouth end offsets is provided with and corresponding second annular groove 14 of the first annular groove 24, the annular groove 14 of the first annular groove 24 and second
Cooperatively form and sealing ring 5 is provided with closure gasket groove, the closure gasket groove.Sealing ring 5 causes the wall thickness increase of the end of pin end 2,
So as to improve the resistance to erosion ability of the end of pin end 2.The female joint 1 is used for madial wall, the sealing that fluid passes through with pin end 2
5 madial walls are enclosed to be respectively positioned in the same face of cylinder.So reduce the axial force produced because of fluid pressure.
Obviously, those skilled in the art can carry out various changes and modification without departing from this practicality to the utility model
New spirit and scope.So, if these modifications and variations of the present utility model belong to the utility model claim and
Within the scope of its equivalent technologies, then the utility model is also intended to comprising including these changes and modification.
The content not being described in detail in this specification belongs to prior art known to professional and technical personnel in the field.
Claims (7)
1. a kind of movable elbow with multistage track groove, includes female joint (1) and the pin end (2) of mutual cooperation, its feature
It is：The first outer track groove, the second outer raceway are sequentially provided with vertically with the mating surface of pin end (2) on the female joint (1)
Groove and the 3rd outer track groove, pin end (2) lateral wall are sequentially provided with track groove in corresponding first, rolled in second vertically
Track groove in track groove in road groove and the 3rd, the first outer track groove and first, track groove in the second outer track groove and second,
Track groove coordinates in 3rd outer track groove and the 3rd forms the first raceway rings (31), the second raceway rings (32) and the 3rd raceway respectively
Fill up ball (4) in ring (33), first raceway rings (31), the second raceway rings (32) and the 3rd raceway rings (33), described the
One raceway rings (31) are close to pin end (2) import, the female joint between first raceway rings (31) and the second raceway rings (32)
(1) madial wall is provided with outer cone anchor ring, and pin end (2) lateral wall is provided with inner cone anchor ring with outer cone ring face corresponding position, described interior
Conical ring face cooperatively forms ring cone (8) with outer cone anchor ring.
2. the movable elbow according to claim 1 with multistage track groove, it is characterised in that：The female joint (1) is outside
Side wall and the second raceway rings (32) and the 3rd raceway rings (33) corresponding position are provided with ring set (9), first raceway rings (31) and the
Axial distance L (6) between two raceway rings (32), between the second raceway rings (32) and the 3rd raceway rings (33) is that ball (4) is straight
Twice of footpath, the end of female joint (1) outlet is provided with chamfering (7).
3. the movable elbow according to claim 1 or 2 with multistage track groove, it is characterised in that：Track groove in each
Section it is semicircle for diameter and ball (4) diameter identical, the cross-sectional curve of each outer track groove by diameter it is different first
Circular arc (12) and the second circular arc (10) composition, the radius R1 (15) of first circular arc (12) are more than the radius of the second circular arc (10)
Greatly, the radius R2 (13) of second circular arc (10) is identical with the radius of ball (4) by R2 (13), first circular arc (12) and
Two circular arcs (10) are the circular arc that central angle is right angle, and the tie point of first circular arc (12) and the second circular arc (10) is outer rolling
The summit of road groove, the center of circle on the summit, the center of circle (17) of the second circular arc (10) and the first circular arc (12) is respectively positioned on straight line
Inner side of the center of circle of upper and the second circular arc (10) in corresponding first circular arc (12) center of circle.
4. the movable elbow according to claim 3 with multistage track groove, it is characterised in that：The half of first circular arc (12)
Differences (19) of the footpath R1 (15) than the radius R2 (13) of the second circular arc (10) is 0.5mm.
5. the movable elbow according to claim 1 or 2 with multistage track groove, it is characterised in that：Each outer track groove
Rounding (18) is respectively equipped with the section both sides of interior track groove.
6. the movable elbow according to claim 1 or 2 with multistage track groove, it is characterised in that：The pin end (2)
The first annular groove (24) is provided with the inside of inlet end, the butting section that the female joint (1) offsets with pin end (2) inlet end is provided with
The second annular groove (14) corresponding with the first annular groove (24), first annular groove (24) cooperatively forms sealing ring with the second annular groove (14)
Sealing ring (5) is provided with groove, the closure gasket groove.
7. the movable elbow according to claim 6 with multistage track groove, it is characterised in that：The female joint (1) with
Pin end (2) is respectively positioned in the same face of cylinder for madial wall, sealing ring (5) madial wall that fluid passes through.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720119044.5U CN206513987U (en) | 2017-02-09 | 2017-02-09 | A kind of movable elbow with multistage track groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720119044.5U CN206513987U (en) | 2017-02-09 | 2017-02-09 | A kind of movable elbow with multistage track groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206513987U true CN206513987U (en) | 2017-09-22 |
Family
ID=59866306
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720119044.5U Expired - Fee Related CN206513987U (en) | 2017-02-09 | 2017-02-09 | A kind of movable elbow with multistage track groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206513987U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210310A (en) * | 2018-11-16 | 2019-01-15 | 江苏欧瑞德石油机械有限公司 | A kind of movable elbow rotational structure |
| CN109442124A (en) * | 2018-12-21 | 2019-03-08 | 中石化四机石油机械有限公司 | Movable elbow active section high intensity bearing structure |
| CN114658936A (en) * | 2022-04-14 | 2022-06-24 | 西安秦森科技有限公司 | High-pressure movable elbow based on four-point contact theory |
-
2017
- 2017-02-09 CN CN201720119044.5U patent/CN206513987U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109210310A (en) * | 2018-11-16 | 2019-01-15 | 江苏欧瑞德石油机械有限公司 | A kind of movable elbow rotational structure |
| CN109210310B (en) * | 2018-11-16 | 2020-06-05 | 江苏欧瑞德石油机械有限公司 | Movable elbow rotating structure |
| CN109442124A (en) * | 2018-12-21 | 2019-03-08 | 中石化四机石油机械有限公司 | Movable elbow active section high intensity bearing structure |
| CN109442124B (en) * | 2018-12-21 | 2024-01-09 | 中国石油化工集团有限公司 | High-strength pressure-bearing structure of movable elbow movable joint |
| CN114658936A (en) * | 2022-04-14 | 2022-06-24 | 西安秦森科技有限公司 | High-pressure movable elbow based on four-point contact theory |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170922 Termination date: 20180209 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |