CN106523821A - Anti-freezing rotating joint for connection of flexible pipeline for liquefied natural gas (LNG) delivery - Google Patents
Anti-freezing rotating joint for connection of flexible pipeline for liquefied natural gas (LNG) delivery Download PDFInfo
- Publication number
- CN106523821A CN106523821A CN201710038470.0A CN201710038470A CN106523821A CN 106523821 A CN106523821 A CN 106523821A CN 201710038470 A CN201710038470 A CN 201710038470A CN 106523821 A CN106523821 A CN 106523821A
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- China
- Prior art keywords
- rotary body
- cylindrical
- center
- ring raceway
- machined
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Classifications
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- 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
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention discloses an anti-freezing rotating joint for connection of a flexible pipeline for liquefied natural gas (LNG) delivery. The joint comprises an inner rotating body and an outer rotating body; both the inner rotating body and the outer rotating body adopt cylindrical boss structures; a cylindrical groove I and an inner rotating body connecting hole communicating with the cylindrical groove I are machined in the center of a bulge cylinder of the inner rotating body; a cylindrical groove II is machined in a bulge cylinder of the outer rotating body; a cylindrical bulge is arranged in the center of the cylindrical groove II; an outer rotating body connecting hole is machined in the center of the cylindrical bulge; the bulge cylinder in the center of the inner rotating body is axially embedded in a circular groove formed by the bulge cylinder in the center of the outer rotating body and the cylindrical bulge; the cylindrical bulge is axially embedded in the cylindrical groove I in the bulge cylinder of the inner rotating body; after circular rails oppositely preset on the outer wall of the bulge cylinder in the center of the inner rotating body and the inner wall of the bulge cylinder in the center of the outer rotating body are matched, rolling bodies are embedded and assembled in a rolling manner; the outer wall of the cylindrical bulge is sealed through rotating sealing rings; and one end of the cylindrical bulge is sealed through a dust-proof sealing ring.
Description
Technical field
The present invention relates to the transportation art of ultralow temperature medium, is more particularly to applied to the ultralow temperature such as liquid oxygen, liquid nitrogen, LNG Jie
The LNG conveying flexible duct connection freezing resistant rotating joints of the conveying equipment of matter.
Background technology
At present, the conveying of ultralow temperature medium and load and unload usually using metal hose or rigidity hard tube add the combination of movable joint head come
Realize.As the medium for being conveyed is less than minus 160 degree, in course of conveying, pipeline outer wall can freeze or frosting, in warehousing and transportation facilities
Or during tank body interface generation feasible displacements, the movable joint head of pipeline often produces damage so that leaking.
The content of the invention
The present invention is directed to above-mentioned technical problem, proposes that a kind of inside and outside rotary body carries vacuum chamber, is connected with vacuum pipe
Afterwards, common ring-like vacuum belt is formed, prevent ultralow temperature in pipeline from pipe is made with the outer room temperature generation convection current of deferent, radiation, conduction of heat
In road, liquid gasification, pipeline outer wall freeze, leak, and connect so as to the LNG that ensure that conveying equipment safe operation conveys flexible duct
Take over control jelly swivel joint.
To reach object above, it is achieved through the following technical solutions：
A kind of LNG conveyings flexible duct connection freezing resistant rotating joint, including：
Inner rotary body and outer rotary body；
Inner rotary body and outer rotary body are cylinder boss structure；
Wherein, the protrusion its center at inner rotary body center is machined with cylindrical grooves I, and arranges inside inner rotary body
There is inner rotary body vacuum chamber；
Inner rotary body axial outer end face is machined with the inner rotary body connecting hole connected with cylindrical grooves I, and with its inside
Inner rotary body vacuum chamber connection inner rotary body vacuum hole；
The prominent cylinder at outer rotary body center is machined with cylindrical grooves II, and cylindrical grooves II be provided centrally with
The cylindrical bump that cylindrical grooves center is collinear；
Cylindrical bump center is machined with the outer rotary body connecting hole connected with outer rotary body outer wall；
Cylindrical bump is internally provided with outer rotary body vacuum chamber；
Outer rotary body axial outer end face is machined with the outer rotation connected with the outer rotary body vacuum chamber inside cylindrical bump
Body vacuum hole；
Wherein, the protrusion cylinder axis at inner rotary body center are to the prominent cylinder inwall and circle for being embedded in outer rotary body center
In the annular groove that columnar projections outer wall is formed, i.e., cylindrical bump is axially embedded in the circle of the protrusion cylinder at inner rotary body center simultaneously
In cylindrical recesses I；
The protrusion cylindrical body outer wall at inner rotary body center is machined with outer ring raceway；
The prominent cylinder inwall at outer rotary body center is machined with inner ring raceway；
Wherein, outer ring raceway is arranged for radial direction para-position with inner ring raceway, and outer ring raceway collectively constitutes rail with inner ring raceway
Rolling element is equipped with road；
Wherein, between I inwall of cylindrical bump outer wall and cylindrical grooves, radial clearance is sealed by rotary seal circle, circle
Dust-proof seal ring is provided between I axial bottom end face of columnar projections axial forward end and cylindrical grooves.
Further, the outer ring raceway of the protrusion cylindrical body outer wall at inner rotary body center is more than twice, in outer rotary body
The inner ring raceway quantity of the prominent cylinder of the heart is identical with outer ring raceway quantity；
Wherein, every one outer ring raceway and inner ring raceway are para-position setting, and each outer ring raceway for assembling conjunction and interior
Rolling element is provided with loop orbit.
Further, rotary seal circle is more than 2, and per be both provided between two neighboring rotary seal circle one every
From ring, shading ring plays the role of positioning in the middle of the axially arranged rotary seal circle of twice.
Using the present invention of above-mentioned technical proposal, inner rotary body and outer rotary body are axially embedded assembling, by default
Outer ring raceway coordinates the (quantity and axle of the roller track that outer ring raceway is cooperatively formed with inner ring raceway with the para-position of inner ring raceway
To the distribution of position, selected according to the length for axially engaging of inner rotary body and outer rotary body.), and load rolling element realization
Ensure rotary body and outer rotary body opposed rotatable while axial limiting, axial rigging position is realized further through dust-proof seal ring
Sealing, realize the sealing of radial direction rigging position further through the assembling of rotary seal circle and corresponding shading ring.
To sum up, inside and outside rotary body has vacuum chamber, after with the connection of upstream and downstream vacuum pipe passes through inner rotary body vacuum hole
Evacuation after docking with outer rotary body vacuum hole, forms overall ring-shaped vacuum chamber, prevents pipeline and rotation in course of conveying
Tieing icing frosting, so the present invention solves over ultralow temperature medium in course of conveying, active joint produces frosting and knot
Ice leads to not the phenomenons such as proper motion, leakage, operation heaviness.The full-time flexibility in ultralow temperature medium delivery pipe road is realized finally even
Connect, movable safe operation freely, and in cryogenic media course of conveying, produce the cold wasting of resources damaged and cause.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of description, and in order to allow the present invention above and other objects, features and advantages can
Become apparent, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, describe in detail as follows.
Description of the drawings
Totally 5 width accompanying drawing of the invention, wherein：
Fig. 1 is the integrally-built explosive view of the present invention.
Fig. 2 is the inner rotary body structural representation of the present invention.
D-D cross-sectional views of the Fig. 3 for Fig. 2.
Fig. 4 is the outer rotation body structure schematic diagram of the present invention.
E-E cross-sectional views of the Fig. 5 for Fig. 4.
In figure：1st, inner rotary body, 1.1, inner rotary body connecting hole, 1.2, outer ring raceway, 1.3, inner rotary body vacuum hole, 2,
Outer rotary body, 2.1, cylindrical bump, 2.2, outer rotary body connecting hole, 2.3, inner ring raceway, 2.4, outer rotary body vacuum hole, 3,
Rolling element, 4, rotary seal circle, 5, dust-proof seal ring, 6, shading ring, A, cylindrical grooves I, B, cylindrical grooves II, C, ring
Groove, D, inner rotary body vacuum chamber, E, outer rotary body vacuum chamber.
Specific embodiment
As shown in Figure 1, Figure 2, a kind of LNG conveyings flexible duct connection freezing resistant rotating joint shown in Fig. 3, Fig. 4 and Fig. 5, including：
Inner rotary body 1 and outer rotary body 2；
Inner rotary body 1 and outer rotary body 2 are cylinder boss structure；
Wherein, the protrusion its center at 1 center of inner rotary body is machined with I A of cylindrical grooves, and inside inner rotary body 1
It is provided with inner rotary body vacuum chamber D；
1 axial outer end face of inner rotary body be machined with the inner rotary body connecting hole 1.1 that connects with I A of cylindrical grooves and and its
The inner rotary body vacuum hole 1.3 of internal inner rotary body vacuum chamber D connections；
The prominent cylinder at 2 center of outer rotary body is machined with II B of cylindrical grooves, and II B of cylindrical grooves is centrally disposed
There is the cylindrical bump 2.1 collinear with cylindrical grooves center；
2.1 center of cylindrical bump is machined with the outer rotary body connecting hole 2.2 connected with 2 outer wall of outer rotary body；
Cylindrical bump 2.1 is internally provided with outer rotary body vacuum chamber E；
2 axial outer end face of outer rotary body is machined with connect with the outer rotary body vacuum chamber E inside cylindrical bump 2.1 outer
Rotary body vacuum hole 2.4；
Wherein, prominent cylinder inwall from the protrusion cylinder axis at 1 center of inner rotary body to embedded 2 center of outer rotary body and
In the annular groove C that 2.1 outer wall of cylindrical bump is formed, i.e., cylindrical bump 2.1 is axially embedded in the protrusion at 1 center of inner rotary body simultaneously
In I A of cylindrical grooves of cylinder；
The protrusion cylindrical body outer wall at 1 center of inner rotary body is machined with outer ring raceway 1.2；
The prominent cylinder inwall at 2 center of outer rotary body is machined with inner ring raceway 2.3；
Wherein, outer ring raceway 1.2 is arranged for radial direction para-position with inner ring raceway 2.3, and outer ring raceway 1.2 and inner ring raceway
2.3 collectively constitute；
Wherein, between I A inwalls of 2.1 outer wall of cylindrical bump and cylindrical grooves, radial clearance is close by rotary seal circle 4
Envelope, is provided with dust-proof seal ring 5 between 2.1 axial forward end of cylindrical bump and I A of cylindrical grooves axial directions bottom end face.
Further, 1 center of inner rotary body protrusion cylindrical body outer wall outer ring raceway 1.2 be twice more than, outer rotation
2.3 quantity of inner ring raceway of the prominent cylinder at 2 center of body is identical with 1.2 quantity of outer ring raceway；
Wherein, every one outer ring raceway 1.2 is para-position setting, and each outer shroud rail for assembling conjunction with inner ring raceway 2.3
Rolling element 3 is provided with road 1.2 and inner ring raceway 2.3；
Further, rotary seal circle 4 is more than 2, and is both provided with one between every two neighboring rotary seal circle 4
Shading ring 6, shading ring 6 play the role of positioning in the middle of the axially arranged rotary seal circle 4 of twice.
Wherein, inner rotary body vacuum chamber D and outer rotary body vacuum chamber E are preferable over integral type annular closure cavity, or
Consider to select ring-like spacer formula cavity for inner rotary body and outer rotary body intensity.
Using the present invention of above-mentioned technical proposal, inner rotary body 1 and outer rotary body 2 are axially embedded assembling, by default
Outer ring raceway 1.2 coordinate (the rolling rail that outer ring raceway 1.2 is cooperatively formed with inner ring raceway 2.3 with the para-position of inner ring raceway 2.3
The distribution of the quantity and axial location in road, selects according to the length for axially engaging of inner rotary body 1 and outer rotary body 2.),
And loading rolling element 3 is realized ensureing rotary body 1 and 2 opposed rotatable of outer rotary body while axial limiting, further through dust-proof close
The sealing of axial rigging position is realized in seal 5, is realized radially further through the assembling of rotary seal circle 4 and corresponding shading ring 6
The sealing of rigging position, while the assembling quantity and position according to rotary seal circle 4 and shading ring 6 determines to form multi-sealed
Chamber.
The above, is only presently preferred embodiments of the present invention, not makees any pro forma restriction to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to the present invention, any to be familiar with this professional technology people
Member in the range of without departing from technical solution of the present invention, when using the technology contents of the disclosure above make it is a little change or be modified to
The Equivalent embodiments of equivalent variations, as long as being the content without departing from technical solution of the present invention, according to the technical spirit pair of the present invention
Any simple modification made for any of the above embodiments, equivalent variations and modification, still fall within the range of technical solution of the present invention.
Claims (3)
1. a kind of LNG conveyings flexible duct connects freezing resistant rotating joint, it is characterised in that include：
Inner rotary body (1) and outer rotary body (2)；
The inner rotary body (1) and outer rotary body (2) are cylinder boss structure；
Wherein, the protrusion its center at inner rotary body (1) center is machined with cylindrical grooves I (A), and inner rotary body (1)
Portion is provided with inner rotary body vacuum chamber (D)；
Inner rotary body (1) the axial outer end face is machined with the inner rotary body connecting hole (1.1) connected with cylindrical grooves I (A)
And the inner rotary body vacuum hole (1.3) that the inner rotary body vacuum chamber (D) internal with which is connected；
The prominent cylinder at outer rotary body (2) center is machined with cylindrical grooves II (B), and cylindrical grooves II (B)
The heart is provided with the cylindrical bump (2.1) collinear with cylindrical grooves center；
Cylindrical bump (2.1) center is machined with the outer rotary body connecting hole (2.2) connected with outer rotary body (2) outer wall；
The cylindrical bump (2.1) is internally provided with outer rotary body vacuum chamber (E)；
Outer rotary body (2) the axial outer end face is machined with the outer rotary body vacuum chamber (E) internal with cylindrical bump (2.1) even
Logical outer rotary body vacuum hole (2.4)；Wherein, the protrusion cylinder axis at inner rotary body (1) center are in embedded outer rotary body (2)
In the annular groove (C) that the prominent cylinder inwall of the heart is formed with cylindrical bump (2.1) outer wall, i.e., while cylindrical bump (2.1)
Axially in the cylindrical grooves I (A) of the protrusion cylinder at embedded inner rotary body (1) center；
The protrusion cylindrical body outer wall at inner rotary body (1) center is machined with outer ring raceway (1.2)；
The prominent cylinder inwall at outer rotary body (2) center is machined with inner ring raceway (2.3)；
Wherein, outer ring raceway (1.2) is arranged for radial direction para-position with inner ring raceway (2.3), and outer ring raceway (1.2) and inner ring raceway
(2.3) collectively constitute in track and be equipped with rolling element (3)；
Wherein, between cylindrical bump (2.1) outer wall and cylindrical grooves I (A) inwall, radial clearance passes through rotary seal circle (4)
Sealing, is provided with dust-proof seal ring between cylindrical bump (2.1) axial forward end and cylindrical grooves I (A) axial direction bottom end face
(5)。
2. a kind of LNG conveyings flexible duct according to claim 1 connects freezing resistant rotating joint, it is characterised in that：
Inner rotary body (1) center protrusion cylindrical body outer wall outer ring raceway (1.2) for twice more than, outer rotary body (2) center
Prominent cylinder inner ring raceway (2.3) quantity it is identical with outer ring raceway (1.2) quantity；
Wherein, every one outer ring raceway (1.2) is para-position setting, and each outer shroud rail for assembling conjunction with inner ring raceway (2.3)
Rolling element (3) is provided with road (1.2) and inner ring raceway (2.3).
3. a kind of LNG conveyings flexible duct according to claim 1 and 2 connects freezing resistant rotating joint, it is characterised in that：
The rotary seal circle (4) is more than 2, and an isolation is both provided between every two neighboring rotary seal circle (4)
Ring (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710038470.0A CN106523821A (en) | 2017-01-16 | 2017-01-16 | Anti-freezing rotating joint for connection of flexible pipeline for liquefied natural gas (LNG) delivery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710038470.0A CN106523821A (en) | 2017-01-16 | 2017-01-16 | Anti-freezing rotating joint for connection of flexible pipeline for liquefied natural gas (LNG) delivery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106523821A true CN106523821A (en) | 2017-03-22 |
Family
ID=58335798
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710038470.0A Pending CN106523821A (en) | 2017-01-16 | 2017-01-16 | Anti-freezing rotating joint for connection of flexible pipeline for liquefied natural gas (LNG) delivery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106523821A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005942A (en) * | 2019-04-30 | 2019-07-12 | 鞍山市昱虎流体设备有限公司 | Anti-freezing low temperature fluid handling arm |
| CN111692443A (en) * | 2020-07-03 | 2020-09-22 | 大连华锐重工集团股份有限公司 | Insulating rotary joint for connecting cryogenic fluid conveying pipelines |
| CN112944998A (en) * | 2021-03-18 | 2021-06-11 | 中国船舶工业集团公司第七0八研究所 | Mobius type heat exchanger pipeline mouth structure |
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|---|---|---|---|---|
| JPS5397625A (en) * | 1977-02-07 | 1978-08-26 | Fmc Corp | Device for sealing rotatable joint |
| FR2520843A1 (en) * | 1982-02-03 | 1983-08-05 | Fmc Europe | Thermal insulation for rotatable coaxial tubes - protects rotational elements from fluid in tubes over wide temperature range |
| CN202501132U (en) * | 2012-03-02 | 2012-10-24 | 江苏德威机械设备有限公司 | Low-temperature rotary joint used for fluid delivery |
| CN203099163U (en) * | 2013-02-04 | 2013-07-31 | 连云港远洋流体装卸设备有限公司 | Rotating joint for ultralow temperature |
| CN103629459A (en) * | 2013-12-16 | 2014-03-12 | 羊宸机械（上海）有限公司 | Axially sealed vacuum insulation ultralow-temperature rotating joint |
| CN206398229U (en) * | 2017-01-16 | 2017-08-11 | 大连中工策控科技有限公司 | A kind of LNG conveyings flexible duct connection freezing resistant rotating joint |
-
2017
- 2017-01-16 CN CN201710038470.0A patent/CN106523821A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5397625A (en) * | 1977-02-07 | 1978-08-26 | Fmc Corp | Device for sealing rotatable joint |
| FR2520843A1 (en) * | 1982-02-03 | 1983-08-05 | Fmc Europe | Thermal insulation for rotatable coaxial tubes - protects rotational elements from fluid in tubes over wide temperature range |
| CN202501132U (en) * | 2012-03-02 | 2012-10-24 | 江苏德威机械设备有限公司 | Low-temperature rotary joint used for fluid delivery |
| CN203099163U (en) * | 2013-02-04 | 2013-07-31 | 连云港远洋流体装卸设备有限公司 | Rotating joint for ultralow temperature |
| CN103629459A (en) * | 2013-12-16 | 2014-03-12 | 羊宸机械（上海）有限公司 | Axially sealed vacuum insulation ultralow-temperature rotating joint |
| CN206398229U (en) * | 2017-01-16 | 2017-08-11 | 大连中工策控科技有限公司 | A kind of LNG conveyings flexible duct connection freezing resistant rotating joint |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005942A (en) * | 2019-04-30 | 2019-07-12 | 鞍山市昱虎流体设备有限公司 | Anti-freezing low temperature fluid handling arm |
| CN110005942B (en) * | 2019-04-30 | 2023-12-22 | 鞍山市昱虎流体设备有限公司 | Anti-freezing low-temperature fluid loading and unloading arm |
| CN111692443A (en) * | 2020-07-03 | 2020-09-22 | 大连华锐重工集团股份有限公司 | Insulating rotary joint for connecting cryogenic fluid conveying pipelines |
| CN111692443B (en) * | 2020-07-03 | 2023-07-25 | 大连华锐重工集团股份有限公司 | Insulating rotary joint for connecting low-temperature fluid conveying pipeline |
| CN112944998A (en) * | 2021-03-18 | 2021-06-11 | 中国船舶工业集团公司第七0八研究所 | Mobius type heat exchanger pipeline mouth structure |
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170322 |
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| RJ01 | Rejection of invention patent application after publication |