CN104405982B - LNG fills arm swivel joint - Google Patents
LNG fills arm swivel joint Download PDFInfo
- Publication number
- CN104405982B CN104405982B CN201410720012.1A CN201410720012A CN104405982B CN 104405982 B CN104405982 B CN 104405982B CN 201410720012 A CN201410720012 A CN 201410720012A CN 104405982 B CN104405982 B CN 104405982B
- Authority
- CN
- China
- Prior art keywords
- ring
- outer ring
- outside circle
- swivel joint
- right outer
- 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.)
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Links
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
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
Abstract
The invention discloses a kind of LNG and fill arm swivel joint.It includes that a ball bearing, the two ends of described ball bearing fix a left end flange and a right-hand member flange respectively；Described ball bearing includes inner ring, left outside circle and right outer ring, for being crisscross arranged between the steel ball raceway between steel ball raceway and described inner ring and described right outer ring between described inner ring and described left outside circle；It is provided with neck bush in described inner ring.Compared with traditional swivel joint, the neck bush in LNG of the present invention filling arm swivel joint can float left and right, adds the compensation rate to o-ring groove width；And outer ring is divided into left outside circle and right outer ring, it is provided with between left outside circle and right outer ring and spacing annular groove is installed, it is ensured that the alignment of left and right raceway；Left outside circle, steel ball raceway between right outer ring and inner ring mutually stagger, and add swivel joint and bear the ability of moment of flexure.
Description
Technical field
The present invention relates to the parts of a kind of cryogen conveying equipment, be specifically related to a kind of LNG filling arm rotation and connect
Head.
Background technology
Fluid assembly and disassembly arm is divided into land fluid assembly and disassembly arm and ship fluid handling arm two kinds, realize the most quickly with
Docked by note equipment, and after docking, loading arm freely can be drifted about with by note equipment in certain scope, it is desirable to
Loading arm has the free degree of multiple directions, and swivel joint is exactly the critical component realizing this function, and is rotating
During have good sealing, be possible to prevent the leakage of the cryogens such as LNG.The structure of swivel joint designs it
Performance has conclusive effect, and the raceway between existing swivel joint inner ring and outer ring uses and designs side by side, bears
The ability of moment of flexure is poor, and dismounting inconvenience, and therefore a kind of compact conformation of design, bears moment of flexure ability strong, it is easy to dismounting
Swivel joint seem particularly necessary.
Summary of the invention
It is an object of the invention to provide a kind of LNG and fill arm swivel joint, solve inner ring in existing swivel joint
And the raceway between outer ring uses and designs side by side, and the ability bearing moment of flexure is poor, and the defect of dismounting inconvenience.
LNG provided by the present invention fills arm swivel joint, including a ball bearing, the two of described ball bearing
End fixes a left end flange and a right-hand member flange respectively；
Described ball bearing includes inner ring, left outside circle and right outer ring, the steel ball rolling between described inner ring and described left outside circle
For being crisscross arranged between steel ball raceway between road and described inner ring and described right outer ring；
It is provided with neck bush in described inner ring.
In described swivel joint, between described left outside circle and described right outer ring, it is provided with limited ring groove, to ensure left steel ball
Raceway (the steel ball raceway between left outside circle and inner ring) and right steel ball raceway (the steel ball raceway between right outer ring and inner ring)
Alignment.
In described swivel joint, it is equipped with dynamic close between described neck bush and described left end flange and described right-hand member flange
Seal, owing to being provided with less fit-up gap in described neck bush, inside is common to the nitrogen of lubrication, so left and right is floated
Dynamic, to ensure that dynamic seal ring circumference bears consistent thrust.
In described swivel joint, between described left outside circle and described right outer ring, it is provided with static sealing ring.
In described swivel joint, between described left outside circle and described left end flange, it is provided with dynamic seal ring and dust ring, institute
State dynamic seal ring to prevent from helium leak, described dust ring from the particulate matters such as dust can be avoided in adverse circumstances to enter rotating
Inside joint, damage sealing ring.
In described swivel joint, between described right outer ring and described right-hand member flange, it is provided with static sealing ring.
Compared with traditional swivel joint, the neck bush in LNG of the present invention filling arm swivel joint can float left and right,
Add the compensation rate to o-ring groove width；And outer ring is divided into left outside circle and right outer ring, left outside circle and right outer ring
Between be provided with spacing annular groove be installed, it is ensured that the alignment of left and right raceway；Left outside circle, between right outer ring and inner ring
Steel ball raceway mutually stagger, add swivel joint and bear the ability of moment of flexure.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of LNG of the present invention filling arm swivel joint.
In figure, each mark is as follows:
1 inner ring, 2 right outer rings, 3 left outside circles, 4 neck bush, 5 static sealing ring I, 6 static sealing ring II, 7 prevent
Konisphere, 8 left end flanges, 9 right-hand member flanges, 10 dynamic seal ring I, 11 dynamic seal ring II, 12 screws, 13 springs
Packing ring, 14 steel balls, 15 limited ring grooves.
Detailed description of the invention
The present invention will be further described below in conjunction with the accompanying drawings, but the invention is not limited in following example.
As it is shown in figure 1, fill the profile of arm swivel joint for LNG of the present invention, it includes a ball bearing,
The two ends of this ball bearing fix a left end flange 8 and a right-hand member flange 9 respectively, and are carried out even by screw 12
Connect fixing, and between screw 12 and left end flange 8 and right-hand member flange 9, be equipped with spring washer 13.In the present invention
Ball bearing include steel ball raceway between inner ring 1, left outside circle 3 and right outer ring 2, and inner ring 1 and left outside circle 3 (by
Steel ball 14 forms) between steel ball raceway (being made up of steel ball) between inner ring 1 and right outer ring 2 for being crisscross arranged, increase
Add swivel joint and bear the ability of moment of flexure.Static sealing ring II6, left outside circle 3 it is provided with between left outside circle 3 and right outer ring 2
And being provided with dynamic seal ring I10 and dust ring 7 between left end flange 8, dynamic seal ring I10 can prevent helium leak, dust-proof
Circle 7 can avoid in adverse circumstances the particulate matters such as dust to enter inside swivel joint, damages sealing ring；Right outer ring 2 with
Static sealing ring I5 it is provided with between right-hand member flange 9.Limited ring groove 15 it is provided with to protect between left outside circle 3 and right outer ring 2
Demonstrate,prove left steel ball raceway (the steel ball raceway between left outside circle 3 and inner ring 1) and right steel ball raceway (right outer ring 2 and inner ring
Steel ball raceway between 1) alignment.Neck bush 4 it is provided with, this neck bush 4 and left end flange 8 in inner ring 2
And be equipped with dynamic seal ring I10 between right-hand member flange 9, and this neck bush 4 can float left and right.
LNG of the present invention filling arm swivel joint is prone to dismounting, and the ability bearing moment of flexure is more preferable.
When using LNG of the present invention to fill arm swivel joint,
With medium, the inner ring of swivel joint of the present invention is flowed into end be connected, neck bush and dynamic seal ring are installed；To rotate
The outer ring of joint is connected with medium outflow end.Should be noted during installation that nitrogen interface is alignd with blow valve port, nitrogen is purged
Pipeline is installed after putting in place.
Claims (1)
1. a LNG fills arm swivel joint, it is characterised in that: it includes that a ball bearing, the two ends of described ball bearing fix a left end flange and a right-hand member flange respectively；
Described ball bearing includes inner ring, left outside circle and right outer ring, for being crisscross arranged between the steel ball raceway between steel ball raceway and described inner ring and described right outer ring between described inner ring and described left outside circle；
It is provided with limited ring groove between described left outside circle and described right outer ring；
It is provided with neck bush in described inner ring；
It is equipped with dynamic seal ring between described neck bush and described left end flange and described right-hand member flange；
It is provided with static sealing ring between described left outside circle and described right outer ring；
It is provided with dynamic seal ring and dust ring between described left outside circle and described left end flange；
It is provided with static sealing ring between described right outer ring and described right-hand member flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410720012.1A CN104405982B (en) | 2014-12-01 | 2014-12-01 | LNG fills arm swivel joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410720012.1A CN104405982B (en) | 2014-12-01 | 2014-12-01 | LNG fills arm swivel joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104405982A CN104405982A (en) | 2015-03-11 |
| CN104405982B true CN104405982B (en) | 2016-09-07 |
Family
ID=52643632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410720012.1A Active CN104405982B (en) | 2014-12-01 | 2014-12-01 | LNG fills arm swivel joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104405982B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110541986A (en) * | 2019-09-24 | 2019-12-06 | 大连华锐重工集团股份有限公司 | Rotary joint for large LNG unloading arm |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7245040U (en) * | 1972-12-08 | 1974-03-14 | Acousa Saxon Sa | Combined axial-radial bearing |
| US4221408A (en) * | 1978-05-24 | 1980-09-09 | Fmc Corporation | Pipe swivel joint with optional static seal |
| CN1150836A (en) * | 1994-06-15 | 1997-05-28 | Fmc有限公司 | Step bearing race swivel joint assembly |
| CN2867046Y (en) * | 2005-11-29 | 2007-02-07 | 西北工业大学 | High temperature resisting rotary sealed joint |
| FR2958357A1 (en) * | 2010-04-06 | 2011-10-07 | Snr Roulements Sa | METHOD FOR ASSEMBLING A BEARING BEARING, BEARING BEARING SO ASSEMBLED AND ASSEMBLING A VEHICLE WHEEL BY MEANS OF SUCH BEARING. |
| CN204300574U (en) * | 2014-12-01 | 2015-04-29 | 中海石油气电集团有限责任公司 | A kind of LNG filling arm swivel joint |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6595555B2 (en) * | 2001-09-13 | 2003-07-22 | Fmc Technologies, Inc. | Coiled tubing swivel with stepped bearing races |
| US8783733B2 (en) * | 2011-01-24 | 2014-07-22 | Delaware Capital Formation, Inc. | Fluid handling swivel joints and fluid conveyance equipment incorporating the same |
-
2014
- 2014-12-01 CN CN201410720012.1A patent/CN104405982B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE7245040U (en) * | 1972-12-08 | 1974-03-14 | Acousa Saxon Sa | Combined axial-radial bearing |
| US4221408A (en) * | 1978-05-24 | 1980-09-09 | Fmc Corporation | Pipe swivel joint with optional static seal |
| CN1150836A (en) * | 1994-06-15 | 1997-05-28 | Fmc有限公司 | Step bearing race swivel joint assembly |
| CN2867046Y (en) * | 2005-11-29 | 2007-02-07 | 西北工业大学 | High temperature resisting rotary sealed joint |
| FR2958357A1 (en) * | 2010-04-06 | 2011-10-07 | Snr Roulements Sa | METHOD FOR ASSEMBLING A BEARING BEARING, BEARING BEARING SO ASSEMBLED AND ASSEMBLING A VEHICLE WHEEL BY MEANS OF SUCH BEARING. |
| CN204300574U (en) * | 2014-12-01 | 2015-04-29 | 中海石油气电集团有限责任公司 | A kind of LNG filling arm swivel joint |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104405982A (en) | 2015-03-11 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |