CN212226332U - Insulating rotary joint for connecting cryogenic fluid conveying pipelines - Google Patents
Insulating rotary joint for connecting cryogenic fluid conveying pipelines Download PDFInfo
- Publication number
- CN212226332U CN212226332U CN202021278679.8U CN202021278679U CN212226332U CN 212226332 U CN212226332 U CN 212226332U CN 202021278679 U CN202021278679 U CN 202021278679U CN 212226332 U CN212226332 U CN 212226332U
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- Prior art keywords
- ring
- outer ring
- insulating
- flange
- rotary joint
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Abstract
The utility model provides a cryogenic fluid pipeline connects and uses insulating rotary joint. The utility model discloses an inner circle, outer lane and outer lane flange, the outside of inner circle is rotated with the inboard of outer lane and is connected, outer lane and outer lane flange fixed connection are connected the two connecting piece and the two side of contacting and are equipped with first insulation mechanism, the internal diameter of outer lane flange matches with the internal diameter of inner circle, and the two department of linking to each other is equipped with second insulation mechanism and sealing mechanism, the outer lane flange links to each other with LNG's main line, the inner circle links to each other with other pipelines of treating the transport. The utility model discloses an add insulating ring and sealing washer to and add insulation support to the high strength bolt and can realize the insulation of rotary joint itself, stray current between the effective separation ship bank.
Description
Technical Field
The utility model relates to a cryogenic fluid field of carrying especially relates to the cryogenic fluid pipeline in LNG loading and unloading arm connects with insulating rotary joint.
Background
In recent years, the proportion of LNG in the global natural gas supply in China has increased rapidly, and more low-temperature discharge arms are in butt joint with marine pipelines at many ports and docks for fluid discharge. The rotary joint is used as an indispensable component of the low-temperature discharging arm, and plays a vital role in ensuring the normal work of the whole machine and reducing the influence of the discharging arm on the ship body and the sea waves.
Stray current may cause explosion of conveyed combustible gas and liquid to cause threat to personal safety, and a rotary joint with good sealing performance is disclosed in 'a special rotary joint for an ultralow-temperature fluid loading and unloading arm' with the publication number of CN 105546330A, but the rotary joint does not have an insulation function. Therefore, a rotary joint with good insulation and capable of blocking stray current between ships and the shore in the LNG low-temperature liquid conveying process is urgently needed to be designed.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned technical problems, an insulated rotary joint for connecting a cryogenic fluid transfer conduit is provided. The utility model discloses a technical means as follows:
the utility model provides a cryogenic fluid pipeline connects uses insulating rotary joint, includes inner circle, outer lane and outer lane flange, the outside of inner circle rotates with the inboard of outer lane to be connected, outer lane and outer lane flange fixed connection, the connecting piece of connecting the two and the two side of contacting are equipped with first insulation mechanism, the internal diameter of outer lane flange matches with the internal diameter of inner circle, and the department of connecting the two is equipped with second insulation mechanism and sealing mechanism, the outer lane flange links to each other with the main pipeline of LNG, the inner circle links to each other with other pipelines of treating the transport.
Further, the connecting piece includes the bolt, evenly distributed a plurality of through-holes as the screw on the flange face of outer lane flange, the upper end of outer lane is equipped with the blind hole that matches its quantity and correspond its position, first insulation mechanism including cup joint at the outside insulation support of bolt and set up at the bolt head with the insulating washer between the outer lane flange.
Further, at least one steel washer is arranged between the bolt head and the insulating gasket.
Furthermore, the outer side of the inner ring is connected with the outer ring through two rows of balls and an eccentric clamping raceway wrapping the balls.
Further, the rotary connecting mechanism is provided with a ball plug for mounting and dismounting a ball, the ball plug is detachably mounted on the outer ring through a bolt, and an O-shaped sealing ring is arranged between the ball plug and the outer ring.
Further, the outer lane is not isometric with the inner circle, and the part that the outer lane was stretched out to the inner circle includes the inner circle boss, inner circle boss upper surface cover is equipped with waterproof sealing ring, waterproof sealing ring's upper portion and outer lane lower surface laminating compress tightly, waterproof sealing ring is used for preventing outside aqueous vapor and dust entering raceway.
Furthermore, the sealing mechanism and the second insulating mechanism arranged between the outer ring flange and the inner ring comprise insulating rings, driving sealing rings, secondary sealing rings, insulating base plates and static sealing rings, grooves for sleeving the insulating rings and the secondary sealing rings are formed in the upper ends of the inner rings, the inner rings of the insulating rings are inserted into the grooves of the inner rings, the secondary sealing rings are sleeved on the outer sides of the inner rings, the upper portions of the secondary sealing rings are connected with the driving sealing rings, the driving sealing rings are sleeved in the groove holes formed in the lower surface of the outer ring flange, the lower portions of the driving sealing rings are connected with the inner rings and the upper surface of the insulating rings, holes are formed in the middle of the insulating base plates, the insulating base plates are sleeved on the outer sides of the secondary sealing rings, the upper surfaces of the.
Furthermore, the inner side of the inner ring is provided with a vacuum groove and adopts a split welding type structure.
The utility model has the advantages of it is following:
1. the adoption adds insulating ring and sealing washer to and add insulation support to the bolt that excels in and can realize the insulation of rotary joint itself, effectively separation stray current between the ship bank.
2. When fluid transmission is realized, the multi-layer sealing design of double dynamic sealing and static sealing and the design of waterproof sealing and vacuum groove split welding type structure reduce leakage rate and improve working safety.
3. The mixed use of the high-strength bolt, the steel washer and the insulating gasket ensures the reliability and insulation of bolt connection.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a schematic view of an insulated rotary joint for connecting cryogenic fluid transfer pipes according to the present invention;
FIG. 2 is an enlarged view of section I of FIG. 1.
In the figure: 1. the sealing structure comprises an outer ring flange, 2 parts of a driving sealing ring, 3 parts of an insulating ring, 4 parts of a secondary sealing ring, 5 parts of an insulating base plate, 6 parts of a static sealing ring, 7 parts of bolts, 8 parts of a steel gasket, 9 parts of an insulating gasket, 10 parts of an insulating sleeve, 11 parts of balls, 12 parts of an eccentric clamping raceway, 13 parts of an outer ring, 14 parts of a waterproof sealing ring, 15 parts of an inner ring, 16 parts of an O-shaped sealing ring and 17 parts of ball blockage.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 and 2, the embodiment of the utility model discloses insulating rotary joint is used in cryogenic fluid pipeline connection, including inner circle 15, outer lane 13 and outer lane flange 1, the outside of inner circle is rotated with the inboard of outer lane and is connected, outer lane and outer lane flange fixed connection, the connecting piece of connecting the two and the two side of contacting are equipped with first insulation mechanism, the internal diameter of outer lane flange matches with the internal diameter of inner circle, and the two junction is equipped with second insulation mechanism and sealing mechanism, the outer lane flange links to each other with the main line of LNG, the inner circle links to each other with other pipelines of waiting to carry.
The connecting piece includes bolt 7, evenly distributed a plurality of through-holes as the screw on the flange face of outer lane flange, the upper end of outer lane is equipped with the blind hole that matches its quantity and correspond its position, first insulation mechanism including cup joint at the outside insulation support 10 of bolt and set up at the bolt head with insulation gasket 9 between the outer lane flange.
At least one steel washer 8 is also included between the bolt head and the insulating washer.
The outer surface of the inner ring is provided with two raceway grooves, the inner surface of the outer ring is provided with two raceway grooves, and the outer ring is sleeved outside the inner ring, so that the raceway grooves on the inner ring and the outer ring form two circular raceways with certain gaps, and are respectively provided with an eccentric clamping raceway 12; the eccentric clamping roller path is internally provided with a ball 11.
The rotary connecting mechanism is provided with a ball plug 17 for mounting and dismounting balls, the ball plug is detachably mounted on the outer ring through bolts, and an O-shaped sealing ring 16 is arranged between the ball plug and the outer ring.
The outer lane is not isometric with the inner circle, and the part that the outer lane was long out to the inner circle includes the inner circle boss, inner circle boss upper surface cover is equipped with waterproof sealing ring 14, the upper portion and the laminating of outer lane lower surface of waterproof sealing ring compress tightly, waterproof sealing ring is used for preventing that outside vapor and dust from getting into the raceway.
The sealing mechanism and the second insulating mechanism arranged between the outer ring flange and the inner ring comprise insulating rings, driving sealing rings, secondary sealing rings, insulating base plates and static sealing rings, the upper end of the inner ring is provided with a groove for sleeving an insulating ring 3 and a secondary sealing ring 4, the inner ring of the insulating ring is inserted in the groove of the inner ring, the secondary sealing ring is sleeved on the outer side of the inner ring, the upper part of the active sealing ring is connected with an active sealing ring 2, the active sealing ring is sleeved in a slot hole arranged on the lower surface of the outer ring flange, the lower part of the insulating padding plate is connected with the inner ring and the upper surface of the insulating ring, the middle of the insulating padding plate 5 is provided with a hole and is sleeved outside the secondary sealing ring, the upper surface of the inner ring is attached with an outer ring flange and a static sealing ring, the lower surface of the inner ring is attached with an outer ring and an inner ring, through holes matched with the number of screw holes of the outer ring flange are also arranged in the circumferential direction of the inner ring, the bottom of the outer ring flange is provided with a groove for accommodating a static sealing ring 6, and the static sealing ring is used for realizing static sealing on the outer ring flange and the insulating base plate.
The inner side of the inner ring is provided with a vacuum groove and adopts a split welding type structure.
The utility model discloses concrete installation steps as follows: the outer ring flange 1 is fixed with the outer ring 13 through the bolt 7, and a steel washer 8, an insulating gasket 9, an insulating sleeve 10 and an insulating base plate 5 are sleeved between the outer ring flange 1 and the bolt 7, so that the insulation between the outer ring flange 1 and the bolt 7 and the insulation between the outer ring flange 1 and the outer ring 13 are realized.
And a driving sealing ring 2, an insulating ring 3, a secondary sealing ring 4 and an insulating base plate 5 are arranged between the outer ring flange 1 and the inner ring 15 from inside to outside, so that the outer ring flange 1 and the inner ring 15 are insulated.
The outer ring flange 1 is fixed relative to the outer ring 13 and connected with the inner ring 15 through double rows of balls 11 arranged on the eccentric clamping raceway 12 to realize relative rotation.
When the low-temperature fluid LNG flows into the outer ring flange 1 from the main pipeline and flows out to other pipelines through the inner ring 15, the inner ring 15 can rotate relative to the outer ring 13 and the outer ring flange 1 through the balls 11 to realize rotation around the axial direction when external force is applied. And through the insulation of outer lane flange 1 and bolt 7, outer lane 13 and inner circle 15, realize effectively separating stray current between the ship bank, guarantee safe, the reliable connection between LNG unloading arm pipe fitting.
The insulating pad 5 is not limited to one kind of insulating material, and may be formed by assembling insulating pads of different kinds of insulating materials.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (8)
1. The insulating rotary joint for the connection of the cryogenic fluid conveying pipelines is characterized by comprising an inner ring, an outer ring and an outer ring flange, wherein the outer side of the inner ring is rotatably connected with the inner side of the outer ring, the outer ring is fixedly connected with the outer ring flange, a first insulating mechanism is arranged on a contact side of a connecting piece for connecting the outer ring and the outer ring flange and the contact side of the outer ring and the outer ring, the inner diameter of the outer ring flange is matched with the inner diameter of the inner ring, a second insulating mechanism and a sealing mechanism are arranged at the joint of the outer ring and the outer ring flange, the outer ring flange is connected with a main.
2. The insulated rotary joint for cryogenic fluid transfer pipeline connection according to claim 1, wherein the connecting member comprises bolts, a plurality of through holes serving as screw holes are uniformly distributed on the flange surface of the outer ring flange, the upper end of the outer ring is provided with blind holes matching the number of the through holes and corresponding to the positions of the blind holes, and the first insulating mechanism comprises an insulating sleeve sleeved outside the bolts and an insulating gasket arranged between the bolt heads and the outer ring flange.
3. The insulated rotary joint for cryogenic fluid transfer conduit connection of claim 2, further comprising at least one steel washer between the bolt head and the insulating washer.
4. The insulated rotary joint for connecting cryogenic fluid transfer pipelines of claim 1, wherein the outer side of the inner ring is connected with the outer ring through two rows of balls and an eccentric clamping raceway wrapping the balls.
5. The insulated rotary joint for cryogenic fluid transfer conduit connection according to claim 1 or 4, wherein the rotary connection mechanism is provided with a ball plug for ball mounting and dismounting, the ball plug is detachably mounted on the outer ring by a bolt, and an O-ring seal is provided between the ball plug and the outer ring.
6. The insulated rotary joint for connecting the cryogenic fluid conveying pipelines according to claim 1, wherein the outer ring and the inner ring are unequal in length, the part of the inner ring, which extends out of the outer ring, comprises an inner ring boss, a waterproof sealing ring is sleeved on the upper surface of the inner ring boss, the upper part of the waterproof sealing ring is tightly attached to the lower surface of the outer ring, and the waterproof sealing ring is used for preventing external moisture and dust from entering the raceway.
7. The insulated rotary joint for cryogenic fluid transfer conduit connection of claim 1, wherein the sealing mechanism disposed between the outer ring flange and the inner ring, the second insulating mechanism comprising an insulating ring, a driving seal ring, a secondary seal ring, an insulating shim plate, and a static seal ring, the upper end of the inner ring is provided with a groove for sleeving an insulating ring and a secondary sealing ring, the inner ring of the insulating ring is inserted in the groove of the inner ring, the secondary sealing ring is sleeved on the outer side of the inner ring, the upper part of the active sealing ring is connected with an active sealing ring which is sleeved in a slot hole arranged on the lower surface of the outer ring flange, the lower part of the insulating padding plate is connected with the inner ring and the upper surface of the insulating ring, the middle part of the insulating padding plate is provided with a hole and is sleeved outside the secondary sealing ring, the upper surface of the static sealing ring is attached to the outer ring flange and the static sealing ring, the lower surface of the static sealing ring is attached to the outer ring and the inner ring, and through holes matched with the number of the screw holes of the outer ring flange are formed in the circumferential direction of the static sealing ring.
8. The insulated rotary joint for connecting cryogenic fluid transfer pipelines of claim 1, wherein the inner side of the inner ring is provided with a vacuum groove and adopts a split welded structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021278679.8U CN212226332U (en) | 2020-07-03 | 2020-07-03 | Insulating rotary joint for connecting cryogenic fluid conveying pipelines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021278679.8U CN212226332U (en) | 2020-07-03 | 2020-07-03 | Insulating rotary joint for connecting cryogenic fluid conveying pipelines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212226332U true CN212226332U (en) | 2020-12-25 |
Family
ID=73910600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021278679.8U Withdrawn - After Issue CN212226332U (en) | 2020-07-03 | 2020-07-03 | Insulating rotary joint for connecting cryogenic fluid conveying pipelines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212226332U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2020
- 2020-07-03 CN CN202021278679.8U patent/CN212226332U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20201225 Effective date of abandoning: 20230725 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20201225 Effective date of abandoning: 20230725 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |