CN204300574U - A kind of LNG filling arm swivel joint - Google Patents
A kind of LNG filling arm swivel joint Download PDFInfo
- Publication number
- CN204300574U CN204300574U CN201420743794.6U CN201420743794U CN204300574U CN 204300574 U CN204300574 U CN 204300574U CN 201420743794 U CN201420743794 U CN 201420743794U CN 204300574 U CN204300574 U CN 204300574U
- Authority
- CN
- China
- Prior art keywords
- outside circle
- swivel joint
- inner ring
- ring
- steel ball
- 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.)
- Withdrawn - After Issue
Links
Abstract
The utility model discloses a kind of LNG filling arm swivel joint.It comprises a ball bearing, and the two ends of described ball bearing fix a left end flange and a right-hand member flange respectively; Described ball bearing comprises inner ring, left outside circle and right outside circle, the steel ball raceway between described inner ring and described left outside circle and between the steel ball raceway between described inner ring and described right outside circle for being crisscross arranged; Neck bush is provided with in described inner ring.Compared with traditional swivel joint, the neck bush that the utility model LNG annotates in 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 outside circle, be provided with the annular groove of mounting limit between left outside circle and right outside circle, the alignment of left and right raceway can be ensured; Left outside circle, steel ball raceway between right outside circle and inner ring stagger mutually, add the ability that swivel joint bears moment of flexure.
Description
Technical field
The utility model relates to a kind of parts of cryogen conveying equipment, is specifically related to a kind of LNG filling arm swivel joint.
Background technology
Fluid assembly and disassembly arm is divided into land fluid assembly and disassembly arm and ship fluid handling arm two kinds, conveniently realize quickly and docking by note equipment, and loading arm freely can be drifted about in certain scope with by note equipment after docking, require that loading arm has the free degree of multiple directions, swivel joint is exactly the critical component realizing this function, and in rotation process, there is good sealing, the leakage of the cryogens such as LNG can be prevented.The structural design of swivel joint has conclusive effect to its performance, raceway between existing swivel joint inner ring and outer ring adopts and designs side by side, the ability of bearing moment of flexure is poor, and dismounting is inconvenient, therefore a kind of compact conformation is designed, bear moment of flexure ability strong, easy-disassembling-assembling swivel joint seems particularly necessary.
Utility model content
The purpose of this utility model is to provide a kind of LNG filling arm swivel joint, and the raceway solved in existing swivel joint between inner ring and outer ring adopts and designs side by side, and the ability of bearing moment of flexure is poor, and the defect of dismounting inconvenience.
LNG filling arm swivel joint provided by the utility model, comprise 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 comprises inner ring, left outside circle and right outside circle, the steel ball raceway between described inner ring and described left outside circle and between the steel ball raceway between described inner ring and described right outside circle for being crisscross arranged;
Neck bush is provided with in described inner ring.
In described swivel joint, limited ring groove is provided with, to ensure the alignment of 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 outside circle and inner ring) between described left outside circle and described right outside circle.
In described swivel joint, described neck bush and be equipped with dynamic seal ring between described left end flange and described right-hand member flange, owing to being provided with less fit-up gap in described neck bush, inside is common to the nitrogen of lubrication, so float in left and right, to ensure that dynamic seal ring circumference bears consistent thrust.
In described swivel joint, between described left outside circle and described right outside circle, be provided with static sealing ring.
In described swivel joint, dynamic seal ring and dust ring is provided with between described left outside circle and described left end flange, described dynamic seal ring can prevent helium leak, and described dust ring can to avoid in adverse circumstances the particles such as dust to enter swivel joint inside, damages sealing ring.
In described swivel joint, between described right outside circle and described right-hand member flange, be provided with static sealing ring.
Compared with traditional swivel joint, the neck bush that the utility model LNG annotates in 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 outside circle, be provided with the annular groove of mounting limit between left outside circle and right outside circle, the alignment of left and right raceway can be ensured; Left outside circle, steel ball raceway between right outside circle and inner ring stagger mutually, add the ability that swivel joint bears moment of flexure.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model LNG filling arm swivel joint.
In figure, each mark is as follows:
1 inner ring, 2 right outside circles, 3 left outside circles, 4 neck bush, 5 static sealing ring I, 6 static sealing ring II, 7 dust rings, 8 left end flanges, 9 right-hand member flanges, 10 dynamic seal ring I, 11 dynamic seal ring II, 12 screws, 13 spring washers, 14 steel balls, 15 limited ring grooves.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further, but the utility model is not limited to following examples.
As shown in Figure 1, for the profile of the utility model LNG filling arm swivel joint, it comprises 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 being connected and fixed by screw 12, and screw 12 and be equipped with spring washer 13 between left end flange 8 and right-hand member flange 9.Ball bearing in the utility model comprises inner ring 1, left outside circle 3 and right outside circle 2, and for being crisscross arranged between the steel ball raceway (being made up of steel ball) of the steel ball raceway (being made up of steel ball 14) between inner ring 1 and left outside circle 3 between inner ring 1 and right outside circle 2, add the ability that swivel joint bears moment of flexure.Static sealing ring II6 is provided with between left outside circle 3 and right outside circle 2, dynamic seal ring I10 and dust ring 7 is provided with between left outside circle 3 and left end flange 8, dynamic seal ring I10 can prevent helium leak, and dust ring 7 can to avoid in adverse circumstances the particles such as dust to enter swivel joint inside, damages sealing ring; Static sealing ring I5 is provided with between right outside circle 2 and right-hand member flange 9.Limited ring groove 15 is provided with to ensure the alignment of left steel ball raceway (the steel ball raceway between left outside circle 3 and inner ring 1) and right steel ball raceway (the steel ball raceway between right outside circle 2 and inner ring 1) between left outside circle 3 and right outside circle 2.In inner ring 2, be provided with neck bush 4, this neck bush 4 and be equipped with dynamic seal ring I10 between left end flange 8 and right-hand member flange 9, and this neck bush 4 can float left and right.
The utility model LNG filling arm swivel joint is easy to dismounting, and the ability of bearing moment of flexure is better.
When using the utility model LNG filling arm swivel joint,
The inner ring of the utility model swivel joint and medium are flowed into end be connected, neck bush and dynamic seal ring are installed; The outer ring of swivel joint is connected with medium outflow end.Should be noted during installation that nitrogen interface is alignd with blow valve port, after nitrogen purge line being in place.
Claims (6)
1. a LNG filling arm swivel joint, it is characterized in that: it comprises 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 comprises inner ring, left outside circle and right outside circle, the steel ball raceway between described inner ring and described left outside circle and between the steel ball raceway between described inner ring and described right outside circle for being crisscross arranged;
Neck bush is provided with in described inner ring.
2. swivel joint according to claim 1, is characterized in that: be provided with limited ring groove between described left outside circle and described right outside circle.
3. swivel joint according to claim 1 and 2, is characterized in that: described neck bush and be equipped with dynamic seal ring between described left end flange and described right-hand member flange.
4. swivel joint according to claim 3, is characterized in that: be provided with static sealing ring between described left outside circle and described right outside circle.
5. swivel joint according to claim 4, is characterized in that: be provided with dynamic seal ring and dust ring between described left outside circle and described left end flange.
6. swivel joint according to claim 5, is characterized in that: be provided with static sealing ring between described right outside circle and described right-hand member flange.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420743794.6U CN204300574U (en) | 2014-12-01 | 2014-12-01 | A kind of LNG filling arm swivel joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420743794.6U CN204300574U (en) | 2014-12-01 | 2014-12-01 | A kind of LNG filling arm swivel joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204300574U true CN204300574U (en) | 2015-04-29 |
Family
ID=53106115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420743794.6U Withdrawn - After Issue CN204300574U (en) | 2014-12-01 | 2014-12-01 | A kind of LNG filling arm swivel joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204300574U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405982A (en) * | 2014-12-01 | 2015-03-11 | 中海石油气电集团有限责任公司 | Rotary joint for LNG (Liquefied Natural Gas) filling arm |
| CN110206950A (en) * | 2019-06-28 | 2019-09-06 | 连云港市拓普科技发展有限公司 | LNG handling single-chamber type rotary joint |
-
2014
- 2014-12-01 CN CN201420743794.6U patent/CN204300574U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405982A (en) * | 2014-12-01 | 2015-03-11 | 中海石油气电集团有限责任公司 | Rotary joint for LNG (Liquefied Natural Gas) filling arm |
| CN104405982B (en) * | 2014-12-01 | 2016-09-07 | 中海石油气电集团有限责任公司 | LNG fills arm swivel joint |
| CN110206950A (en) * | 2019-06-28 | 2019-09-06 | 连云港市拓普科技发展有限公司 | LNG handling single-chamber type rotary joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150429 Effective date of abandoning: 20160907 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |