CN106439332A - Rotating pipe joint - Google Patents
Rotating pipe joint Download PDFInfo
- Publication number
- CN106439332A CN106439332A CN201611192409.3A CN201611192409A CN106439332A CN 106439332 A CN106439332 A CN 106439332A CN 201611192409 A CN201611192409 A CN 201611192409A CN 106439332 A CN106439332 A CN 106439332A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- external thread
- inner sleeve
- thread sleeve
- joint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/005—Branching pipes; Joining pipes to walls adjustable and comprising a hollow threaded part in an opening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/08—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe
- F16L41/14—Joining pipes to walls or pipes, the joined pipe axis being perpendicular to the plane of the wall or to the axis of another pipe by screwing an intermediate part against the inside or outside of the wall
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention discloses a rotating pipe joint which comprises a joint casing, an inner sleeve and an outer thread sleeve. The joint casing is provided with a mounting hole and a side channel, the inner sleeve is sleeved inside the mounting hole and communicated with the side channel, the tail end of the inner sleeve is provided with a position blocking part, the head end of the inner sleeve extends into the mounting hole and fixedly connected with the joint casing, and an inner flow channel is arranged in the inner sleeve. The outer thread sleeve sleeves the inner sleeve and is in clearance fit with the inner sleeve. The axial length of the outer thread sleeve is smaller than the axial length from the position blocking part to the lower edge of the joint casing. The outer thread sleeve comprises an outer thread part and a twisting part movably sleeving the outer thread sleeve. After the rotating pipe joint is assembled well, one end of the outer thread sleeve abuts against the position blocking part, and the other end of the outer thread sleeve and the joint casing are at intervals. When the rotating pipe joint vibrates, the vibration of the pipe joint mainly presses the twisting part and has a small influence on the outer thread sleeve. Due to the fact that the inner sleeve is in clearance fit with the outer thread sleeve, the inner sleeve can evenly deform in a gap, and the possibility of breakage caused by stress concentration is greatly reduced.
Description
Technical field
The present invention relates to piecing devices field, especially, it is related to a kind of swivel joint.
Background technology
The pipe joint being arranged on casing surface mainly adopts 90 ° of L-type pipe joints or T-shaped pipe joint, and structure is shown in Fig. 1, and pipe connects
Head building block：Cushion rubber 1, nut 2, joint 3.Nut 2 is screwed on joint 3, and cushion rubber 1 is arranged in the aprons slot of nut 2 lower section,
Turning nut 2 makes joint 3 enter in casing, tightens nut 2 to regulation moment after adjusting pipe joint direction.Nut 2 is by regulation
After moment is tightened, casing upper surface and nut 2, nut thread and joint screw thread, casing inner hole thread and joint screw thread are mutual
Fit tightly under active force, frictional force fixing nut 2 and joint 3 that faying face produces.
But there is following two problem in this kind of joint：When pipeline vibration causes pipe joint vibration, pipe can be made for a long time
Joint 3 is susceptible to rupture.And when pipeline vibration causes pipe joint to rotate, pipe joint drives nut rotation by frictional force,
Nut loosening can be led to for a long time, lead to seal failure and pipe joint solid failure even to deflect.
Content of the invention
The invention provides a kind of swivel joint, to solve the technology that existing pipe joint is easily broken off because of pipeline vibration
Problem.
The technical solution used in the present invention is as follows：
A kind of swivel joint, swivel joint includes joint housing, inner sleeve and external thread sleeve.
Joint housing is provided with installing hole and wing passage, and inner sleeve is set in installation in the hole and is connected with wing passage, inner sleeve
Tail end is provided with the steric hindrance portion for carrying external thread sleeve, and head end stretches in installing hole and affixed with joint housing, is provided with inner sleeve
Inner flow passage with wing passage conducting.
External thread sleeve is set on inner sleeve and is coordinated with inner sleeve ligament.The axial length of external thread sleeve is less than steric hindrance portion to connecing
The axial length of casing lower edge.External thread sleeve includes being adapted to the external thread part of inner hole thread of casing and is movably set in external thread sleeve
Upper it is used for turning external thread sleeve and turns portion with casing is fastenedly connected.
Further, in the hole is installed and is provided with female thread, inner sleeve is provided with corresponding external screw thread.
Further, the head end caliber of inner sleeve reduces, and the aperture of the installing hole of joint housing upper wall accordingly reduces.Inner sleeve
The head end of pipe and joint housing are welded and fixed.
Further, steric hindrance portion is the boss of the tail end being arranged on inner sleeve.
Further, external thread sleeve is provided with sealing gasket in the portion of turning at least side.
Further, the end face turning portion is provided with the seal groove for accommodating sealing gasket.
Further, sealing gasket is copper sealing gasket or rubber gasket.
Further, the portion of turning is the nut sleeve being set in external thread sleeve outer wall, and nut sleeve is coordinated for gap with external thread sleeve.
Further, nut sleeve is hex nut set, and the endoporus of hex nut set is hexagon, and external thread sleeve corresponds to nut
The region of set is hexahedron.
The invention has the advantages that：Above-mentioned swivel joint, external thread sleeve is set on inner sleeve, turns portion
Enter in casing, pass through steric hindrance portion drive inner sleeve and the joint housing that is fastenedly connected with inner sleeve simultaneously to casing direction simultaneously
Motion, after swivel housing and inner sleeve adjust joint direction, continues to turn portion and tightens to external thread sleeve.Assemble
Afterwards, the axial length of external thread sleeve is less than steric hindrance portion to the axial length of joint housing lower edge.Therefore external thread sleeve one end and steric hindrance portion
Offset, the other end and joint housing interval setting.When pipeline vibration causes swivel joint vibration, the vibration of swivel joint
Mainly compressing turns portion, and the impact to external thread sleeve is less.Simultaneously because inner sleeve is coordinated for gap with external thread sleeve, inner sleeve
Homogeneous deformation can occur in gap, stress concentration is greatly reduced and leads to the probability rupturing.
In addition to objects, features and advantages described above, the present invention also has other objects, features and advantages.
Below with reference to figure, the present invention is further detailed explanation.
Brief description
The accompanying drawing constituting the part of the application is used for providing a further understanding of the present invention, the schematic reality of the present invention
Apply example and its illustrate, for explaining the present invention, not constituting inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the pipe joint schematic diagram of prior art；
Fig. 2 is the full generalized section of swivel joint of the preferred embodiment of the present invention；
Fig. 3 is the swivel joint semi-section schematic diagram of the preferred embodiment of the present invention；
Fig. 4 is the swivel joint scheme of installation of the preferred embodiment of the present invention.
Description of reference numerals：100th, joint housing；200th, inner sleeve；300th, external thread sleeve；400th, casing；
110th, wing passage；
210th, steric hindrance portion；220th, inner flow passage；
310th, external thread part；320th, turn portion；330th, sealing gasket.
Specific embodiment
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the present invention can be defined by the claims
Implement with the multitude of different ways covering.
With reference to Fig. 2～4, the preferred embodiments of the present invention provide a kind of swivel joint, and swivel joint includes joint
Housing 100, inner sleeve 200 and external thread sleeve 300.Joint housing 100 is provided with installing hole and wing passage 110, and inner sleeve 200 is set in
In the hole is installed and connects with wing passage 110, inner sleeve 200 tail end is provided with the steric hindrance portion 210 for carrying external thread sleeve 300, head end
Stretch in installing hole and affixed with joint housing 100, in inner sleeve 200, be provided with the inner flow passage 220 with wing passage 110 conducting.Outward
Swivel nut 300 is set on inner sleeve 200 and is coordinated with inner sleeve 200 gap.The axial length of external thread sleeve 300 is less than steric hindrance portion
The axial length of 210 to joint housing 100 lower edge.External thread sleeve 300 includes being adapted to the external thread part of the inner hole thread of casing 400
310 and be movably set on external thread sleeve 300 to be used for turning external thread sleeve 300 and turn portion 320 with casing 400 is fastenedly connected.
Wherein, inner sleeve 200 is hollow body, and its head end seals, and tail end opening forms inner flow passage 220.Inner sleeve 200
The sidewall opening of inner sleeve 200 can be made to turn on the wing passage 110 of joint housing 100 by rotation.Wing passage 110 can be by pipe
Connected nut and pipeline connect.The portion 320 that turns of external thread sleeve 300 can be to be movably set in be easy to turn external thread sleeve on external thread sleeve 300
300 nut sleeve.Turning portion 320 can be along the axially-movable of external thread sleeve 300.
First external thread sleeve 300 is enclosed within inner sleeve 200, then inner sleeve 200 is loaded in the installing hole of joint housing 100,
Head end is connected affixed integral, the steric hindrance portion 210 picking-up external thread sleeve 300 of tail end with joint housing 100.Then turn portion
320 enter in casing 400, and external thread sleeve 300 is in casing 400 endoporus to bottom offset.In the presence of resistance part 210 in place, external thread sleeve
300 enter casing 400 endoporus with inner sleeve 200, until contacting with the portion that turns 320 with joint housing 100.Outer spiral shell wouldn't be tightened
Set 300.After adjusting the direction of swivel joint, anchor tip direction.Then tighten external thread sleeve 300 and arrive regulation moment values.
Applicant through further investigation find prior art joint because pipeline vibration is easily broken off the reason be：Existing pipe
Joint is directly threaded into casing bore section and is fitted tightly with casing it is impossible to deform, and causes joint to send out from casing surface location
Raw flexural deformation, leads to stress concentration, pipe joint can be made for a long time to rupture from there.
And after the swivel joint of the application assembles, because the axial length of external thread sleeve 300 is less than steric hindrance portion 210 to connecing
The axial length of casing 100 lower edge.Therefore external thread sleeve 300 one end and steric hindrance portion 210 offset, the other end and joint housing 100
Interval setting is not in contact with it.When pipeline vibration causes swivel joint vibration, what joint housing 100 was directly oppressed is to turn
Portion 320, and turning portion 320 is to be movably set on external thread sleeve 300, thus the impact to external thread sleeve 300 for the vibration is less.Simultaneously by
Coordinate for gap with external thread sleeve 300 in inner sleeve 200, inner sleeve 200 can occur homogeneous deformation in gap, stress is greatly reduced
Concentrate and lead to the probability rupturing.
The invention has the advantages that：Above-mentioned swivel joint, external thread sleeve 300 is set on inner sleeve 200, turns
Turn portion 320 and enter in casing 400, inner sleeve 200 is driven by steric hindrance portion 210 simultaneously and be fastenedly connected with inner sleeve 200
Joint housing 100 is moved to casing 400 direction simultaneously, after swivel housing 100 and inner sleeve 200 adjust joint direction,
Continue to turn portion 320 and tighten to external thread sleeve 300.After assembling, the axial length of external thread sleeve 300 be less than steric hindrance portion 210 to
The axial length of joint housing 100 lower edge.Therefore external thread sleeve 300 one end and steric hindrance portion 210 offset, the other end and joint housing
100 interval settings.When pipeline vibration causes swivel joint vibration, the vibration of swivel joint is mainly compressing and turns portion
320, and the impact to external thread sleeve 300 is less.Simultaneously because inner sleeve 200 is coordinated for gap with external thread sleeve 300, inner sleeve 200
Homogeneous deformation can occur in gap, stress concentration is greatly reduced and leads to the probability rupturing.
Alternatively, with reference to Fig. 2 and 4, in the hole is installed and is provided with female thread, inner sleeve 200 is provided with corresponding external screw thread.This design
Can make inner sleeve 200 and joint housing 100 is installed more convenient, tightness is higher, better tightness simultaneously.
Alternatively, with reference to Fig. 2, the head end caliber of inner sleeve 200 reduces, the aperture of the installing hole of joint housing 100 upper wall
Accordingly reduce.The head end of inner sleeve 200 is welded and fixed with joint housing 100.The head end caliber of inner sleeve 200 is little, can stretch into and connect
The installing hole of casing 100 upper wall.The caliber at other positions big it is impossible to enter the installing hole of joint housing 100 upper wall in, thus
The effect of positioning can be played.The head end of inner sleeve 200 is welded and fixed with joint housing 100, and fixed effect is more preferable, inner sleeve 200
Will not produce relative rotation and joint housing 100 between, in the face of stability when swivel joint vibration and rotation is more preferable.
Alternatively, with reference to Fig. 2, steric hindrance portion 210 is the boss of the tail end being arranged on inner sleeve 200.Boss structure is simple, can
It is integrally formed with inner sleeve 200, and good stability.
Alternatively, with reference to Fig. 2, external thread sleeve 300 is provided with sealing gasket 330 in the portion that turns 320 at least side.External thread sleeve 300 to
One sealing gasket 330 is set less.Sealing gasket 330 can be using conventional sealing gasket 330.Shake when pipeline vibration is rotated pipe joint
When dynamic, sealing gasket 330 provides elastic force and damping damping so that external thread sleeve 300 and inner sleeve 200 stress are less, more difficult broken
Bad.
Alternatively, with reference to Fig. 2, the end face turning portion 320 is provided with the seal groove for accommodating sealing gasket 330.This design makes
Obtain sealing gasket 330 and turn the more preferable of portion 320 combination, sealing gasket 330 is not easy sideslip, thus better tightness.
Alternatively, sealing gasket 330 is copper sealing gasket or rubber gasket.The sealing effectiveness of this kind of sealing gasket 330 is more preferable.
Alternatively, with reference to Fig. 2, turning portion 320 is nut sleeve, nut sleeve and the external thread sleeve being set in external thread sleeve 300 outer wall
300 is gap cooperation.
The joint through further investigation discovery prior art for the applicant causes swivel joint to rotate when pipeline vibration, roll tube
Joint drives nut 2 to rotate by frictional force, can lead to nut loosening for a long time, lead to seal failure and swivel joint to be fixed
Lost efficacy and even deflected.
In the application, on the one hand, inner sleeve 200 is integrally formed with joint housing 100, between external thread sleeve 300 and inner sleeve 200
Gap coordinates, and external thread sleeve 300 only one end and steric hindrance portion 210 offset simultaneously, there is gap between the other end and joint housing 100.Cause
This only has steric hindrance portion 210 position actually between inner sleeve 200 and external thread sleeve 300 contacts.Therefore casing 400 inner hole thread pair
The coefficient of friction of external thread sleeve 300 is much larger than equal to inner sleeve 200 coefficient of friction to external thread sleeve 300.And ignoring external thread sleeve 300
In the case of gravity, casing 400 inner hole thread is equal to the pressure to external thread sleeve 300 for the inner sleeve 200 to the pressure of external thread sleeve 300
(), the former frictional force is much larger than the latter, therefore inner sleeve 200 rotates and external thread sleeve 300 will not be driven to rotate.Another aspect joint
Housing 100 rotates when driving nut sleeve to rotate, and generally vibration drives the rotation amplitude very little of joint housing 100, and nut sleeve with
Gap between external thread sleeve 300 can avoid nut sleeve to drive external thread sleeve 300 to rotate.It can be seen that pipeline vibration causes swivel joint to rotate
When, external thread sleeve 300 both will not drive its rotation because inner sleeve 200 rotates, and also will not drive its rotation because joint housing 100 rotates
Turn.Above design can avoid vibrating and drive external thread sleeve 300 to rotate it is ensured that the positioning of the whole each part of swivel joint and phase interaction
Firmly it is ensured that sealing was not lost efficacy.
Alternatively, with reference to Fig. 2～4, nut sleeve is hex nut set, and the endoporus of hex nut set is hexagon, outer spiral shell
The region of the corresponding nut sleeve of set 300 is hexahedron.The nut sleeve of this design is combined with external thread sleeve 300, turns conveniently.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (9)
1. a kind of swivel joint it is characterised in that described swivel joint include joint housing (100), inner sleeve (200) and
External thread sleeve (300)；
Described joint housing (100) is provided with installing hole and wing passage (110), and described inner sleeve (200) is set in described installing hole
Interior and connect with described wing passage (110), described inner sleeve (200) tail end is provided with the position for carrying described external thread sleeve (300)
Resistance part (210), head end stretches in described installing hole and affixed with described joint housing (100), is provided with described inner sleeve (200)
The inner flow passage (220) turning on described wing passage (110)；
Described external thread sleeve (300) is set in described inner sleeve (200) and above and with described inner sleeve (200) gap coordinates；Described outer
The axial length of swivel nut (300) is less than described steric hindrance portion (210) to the axial length of described joint housing (100) lower edge；Described
External thread sleeve (300) includes the external thread part (310) of inner hole thread of adaptation casing (400) and is movably set in described external thread sleeve
(300) it is used for turning described external thread sleeve (300) on and turn portion (320) with described casing (400) is fastenedly connected.
2. swivel joint according to claim 1 is it is characterised in that described installation in the hole is provided with female thread, described interior
Sleeve pipe (200) is provided with corresponding external screw thread.
3. swivel joint according to claim 1 is it is characterised in that the head end caliber of described inner sleeve (200) reduces,
The aperture of the installing hole of described joint housing (100) upper wall accordingly reduces；The head end of described inner sleeve (200) and described joint shell
Body (100) is welded and fixed.
4. swivel joint according to claim 1 is it is characterised in that described steric hindrance portion (210) is described interior for being arranged on
The boss of the tail end of sleeve pipe (200).
5. swivel joint according to claim 1 is it is characterised in that described external thread sleeve (300) turns portion described
(320) at least side is provided with sealing gasket (330).
6. swivel joint according to claim 5 it is characterised in that the described end face turning portion (320) be provided with for
Accommodate the seal groove of described sealing gasket (330).
7. swivel joint according to claim 5 is it is characterised in that described sealing gasket (330) is copper sealing gasket or rubber
Glue sealing gasket.
8. the swivel joint according to any one of claim 1～7 is it is characterised in that the described portion (320) that turns is set
It is located at the nut sleeve of described external thread sleeve (300) outer wall, described nut sleeve is coordinated for gap with described external thread sleeve (300).
9. swivel joint according to claim 8 is it is characterised in that described nut sleeve is hex nut set, and hexagonal
The endoporus of nut sleeve is hexagon, and the region of the corresponding described nut sleeve of described external thread sleeve (300) is hexahedron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611192409.3A CN106439332B (en) | 2016-12-21 | 2016-12-21 | Swivel joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611192409.3A CN106439332B (en) | 2016-12-21 | 2016-12-21 | Swivel joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106439332A true CN106439332A (en) | 2017-02-22 |
| CN106439332B CN106439332B (en) | 2018-11-09 |
Family
ID=58215387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611192409.3A Active CN106439332B (en) | 2016-12-21 | 2016-12-21 | Swivel joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106439332B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533854A (en) * | 2018-06-25 | 2018-09-14 | 海盐双赢管件制造有限公司 | A kind of damping pipe fitting |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5165731A (en) * | 1988-11-01 | 1992-11-24 | Smc Corporation | Pipe fitting having a multi-fittable thread |
| CN2670681Y (en) * | 2004-01-06 | 2005-01-12 | 中国石油天然气集团公司 | Direction-adjustable sealed joint |
| CN2755394Y (en) * | 2004-11-18 | 2006-02-01 | 马耀武 | High-pressure fluid pipe joint with micro-flow |
| US20130026743A1 (en) * | 2011-07-29 | 2013-01-31 | Amsafe, Inc. | Inflator connectors for inflatable personal restraints and associated systems and methods |
| CN205278626U (en) * | 2015-12-15 | 2016-06-01 | 上海创力集团股份有限公司 | Articulated joint is sealed to rotation type |
| CN105840928A (en) * | 2016-06-13 | 2016-08-10 | 河北亚大汽车塑料制品有限公司 | Directly-inserted type connector and integrated device |
| CN205689982U (en) * | 2016-06-12 | 2016-11-16 | 中国第一汽车股份有限公司 | A kind of union elbow assembly of 360 ° of adjustment direction |
-
2016
- 2016-12-21 CN CN201611192409.3A patent/CN106439332B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5165731A (en) * | 1988-11-01 | 1992-11-24 | Smc Corporation | Pipe fitting having a multi-fittable thread |
| CN2670681Y (en) * | 2004-01-06 | 2005-01-12 | 中国石油天然气集团公司 | Direction-adjustable sealed joint |
| CN2755394Y (en) * | 2004-11-18 | 2006-02-01 | 马耀武 | High-pressure fluid pipe joint with micro-flow |
| US20130026743A1 (en) * | 2011-07-29 | 2013-01-31 | Amsafe, Inc. | Inflator connectors for inflatable personal restraints and associated systems and methods |
| CN205278626U (en) * | 2015-12-15 | 2016-06-01 | 上海创力集团股份有限公司 | Articulated joint is sealed to rotation type |
| CN205689982U (en) * | 2016-06-12 | 2016-11-16 | 中国第一汽车股份有限公司 | A kind of union elbow assembly of 360 ° of adjustment direction |
| CN105840928A (en) * | 2016-06-13 | 2016-08-10 | 河北亚大汽车塑料制品有限公司 | Directly-inserted type connector and integrated device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533854A (en) * | 2018-06-25 | 2018-09-14 | 海盐双赢管件制造有限公司 | A kind of damping pipe fitting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106439332B (en) | 2018-11-09 |
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Address after: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee after: China Hangfa South Industrial Co. Ltd. Address before: 412002 Dong Jiaduan, Zhuzhou, Hunan Patentee before: China Southern Airlines Industry (Group) Co., Ltd. |
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