CN202914938U - Motive seal swivel joint for entrucking low-temperature liquefied natural gas (LNG) - Google Patents
Motive seal swivel joint for entrucking low-temperature liquefied natural gas (LNG) Download PDFInfo
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- CN202914938U CN202914938U CN 201220609257 CN201220609257U CN202914938U CN 202914938 U CN202914938 U CN 202914938U CN 201220609257 CN201220609257 CN 201220609257 CN 201220609257 U CN201220609257 U CN 201220609257U CN 202914938 U CN202914938 U CN 202914938U
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Abstract
The utility model discloses a motive seal swivel joint for entrucking low-temperature liquefied natural gas (LNG) which is not prone to leakage, and comprises a left flange and a right flange, wherein the left flange is connected with an inner ring to form a left rotating member, the right flange is connected with an outer ring to form a right rotating member, and the left rotating member and the right rotating member can be relatively rotated. A driving sealing ring is arranged between driving sealing ring grooves arranged at the right side of the inner ring and the left end face of the right flange; and a seam allowance for stopping the slide of the driving sealing ring is arranged on the driving sealing ring groove arranged on the right flange left end face. The seam allowance is added at the driving sealing ring groove to be a semi-open groove so as to prevent that the leaked LNG can push the driving sealing ring to a runner after expansion, thereby avoiding the failure of sealing. The motive seal swivel joint for entrucking the low-temperature LNG has good sealing performance.
Description
Technical field
The utility model relates to a kind of low temperature LNG entrucking dynamic-sealing rotary joint, mainly as used oil filling riser, the required swivel joint of using of oil-feeding arm in the petrochemical industry fluid assembly and disassembly process.
Background technique
The low temperature oil filling riser is the domestic industrial products that just developed in recent years, is mainly used in the loading and unloading of petrochemical industry cryogen.Its technological core parts are swivel joint, the main product on the domestic market as shown in Figure 1, its main structure consists of left flange, right flange, inner ring, outer ring and Sealing.Good sealing and the operating characteristics that is determining swivel joint of the rationality of rotary joint structure and design size.The groove that existing swivel joint is installed the primary seal circle is open, the primary seal circle is after using leakage, liquid LNG (LNG Liquefied natural gas) enters between the primary and secondary seal ring, LNG expands under the normal temperature state getting back to, then expansive force makes the primary seal circle to the runner internal strain, will produce larger splash when using for the second time and leak.
The model utility content
Technical problem to be solved in the utility model is: the low temperature LNG entrucking dynamic-sealing rotary joint that a kind of difficult leakage is provided.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of low temperature LNG entrucking dynamic-sealing rotary joint, comprise left flange, right flange, left flange connects inner ring and forms the anticlockwise parts, right flange connects the outer ring and forms the right rotation parts, the anticlockwise parts can rotate relatively with the right rotation parts, between the realizing active sealing circle groove that inner ring right side and right flange left side arrange the realizing active sealing circle is installed, the realizing active sealing circle groove that right flange left side arranges has be used to the seam that stops that the realizing active sealing circle slides.
Between the left side o-ring groove that described left flange right side and inner ring left side arrange the left side seal ring is installed; Between the right side o-ring groove that right flange left side and right side, outer ring arrange the right side seal ring is installed.
Between the main static sealing ring groove that described inner ring left side and left flange right side arrange main static sealing ring is installed, between the secondary seal circle groove that right flange left side and inner ring right side arrange the secondary seal circle is installed.
Described left flange and inner ring are linked into the anticlockwise parts with screw, and right flange and outer ring are linked into the right rotation parts with screw.
The beneficial effects of the utility model are: the utility model has increased a seam at realizing active sealing circle groove place, becomes a semi open model groove, prevents from after the LNG that leaks expands the realizing active sealing circle being shifted onto in the runner, thereby makes seal failure.The utility model sealability is better.
Description of drawings
Fig. 1 is the structural representation of prior art;
Fig. 2 is structural representation of the present utility model.
Among the figure: 1, right flange, 2, the realizing active sealing circle, 4, the secondary seal circle, 5, the outer ring, 7, inner ring, 8, the left side seal ring, 10, left flange, 13, main static sealing ring, 16, the right side seal ring.
Embodiment
Below in conjunction with accompanying drawing, describe specific embodiments of the present utility model in detail.
As shown in Figure 2, low temperature LNG described in the utility model entrucking dynamic-sealing rotary joint, comprise left flange 10, right flange 1, left flange 10 is linked into the anticlockwise parts with inner ring 7 usefulness screws, right flange 1 is linked into the right rotation parts with outer ring 5 usefulness screws, and the anticlockwise parts can rotate relatively with the right rotation parts.
Between the realizing active sealing circle groove that inner ring 7 right sides and right flange 1 left side arrange realizing active sealing circle 2 is installed, the realizing active sealing circle groove that right flange 1 left side arranges has be used to the seam that stops that realizing active sealing circle 2 slides.
The place has increased a seam at realizing active sealing circle groove, becomes a semi open model groove, prevents from after the LNG that leaks expands realizing active sealing circle 2 being shifted onto in the runner, thereby makes seal failure.
Between the left side o-ring groove that left flange 10 right sides and inner ring 7 left sides arrange left side seal ring 8 is installed, between the right side o-ring groove that right flange 1 left side and 5 right sides, outer ring arrange right side seal ring 16 is installed, between the main static sealing ring groove that inner ring 7 left sides and left flange 10 right sides arrange main static sealing ring 13 is installed, between the secondary seal circle groove that right flange 1 left side and inner ring 7 right sides arrange secondary seal circle 4 is installed.The utility model sealability is better.
Claims (3)
1. low temperature LNG entrucking dynamic-sealing rotary joint, comprise left flange (10), right flange (1), left flange (10) connects inner ring (7) and forms the anticlockwise parts, right flange (1) connects outer ring (5) and forms the right rotation parts, the anticlockwise parts can rotate relatively with the right rotation parts, it is characterized in that: between the realizing active sealing circle groove that described inner ring (7) right side and right flange (1) left side arrange realizing active sealing circle (2) is installed, the realizing active sealing circle groove that right flange (1) left side arranges has be used to the seam that stops that realizing active sealing circle (2) slides.
2. low temperature LNG according to claim 1 entrucking dynamic-sealing rotary joint is characterized in that: between the left side o-ring groove that described left flange (10) right side and inner ring (7) left side arrange left side seal ring (8) is installed; Between the right side o-ring groove that right flange (1) left side and right side, outer ring (5) arrange right side seal ring (16) is installed; Between the main static sealing ring groove that inner ring (7) left side and left flange (10) right side arrange main static sealing ring (13) is installed, between the secondary seal circle groove that right flange (1) left side and inner ring (7) right side arrange secondary seal circle (4) is installed.
3. low temperature LNG according to claim 1 entrucking dynamic-sealing rotary joint, it is characterized in that: described left flange (10) is linked into the anticlockwise parts with inner ring (7) with screw, and right flange (1) is linked into the right rotation parts with outer ring (5) with screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220609257 CN202914938U (en) | 2012-11-19 | 2012-11-19 | Motive seal swivel joint for entrucking low-temperature liquefied natural gas (LNG) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220609257 CN202914938U (en) | 2012-11-19 | 2012-11-19 | Motive seal swivel joint for entrucking low-temperature liquefied natural gas (LNG) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202914938U true CN202914938U (en) | 2013-05-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220609257 Expired - Lifetime CN202914938U (en) | 2012-11-19 | 2012-11-19 | Motive seal swivel joint for entrucking low-temperature liquefied natural gas (LNG) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202914938U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927390A (en) * | 2012-11-19 | 2013-02-13 | 江苏长隆石化装备有限公司 | Motive seal swivel joint for entrucking low-temperature LNG (liquefied natural gas) |
| CN103307440A (en) * | 2013-06-21 | 2013-09-18 | 连云港市拓普科技发展有限公司 | Special rotating joint for ultra-low-temperature fluid loading and unloading arm |
-
2012
- 2012-11-19 CN CN 201220609257 patent/CN202914938U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927390A (en) * | 2012-11-19 | 2013-02-13 | 江苏长隆石化装备有限公司 | Motive seal swivel joint for entrucking low-temperature LNG (liquefied natural gas) |
| CN103307440A (en) * | 2013-06-21 | 2013-09-18 | 连云港市拓普科技发展有限公司 | Special rotating joint for ultra-low-temperature fluid loading and unloading arm |
| CN103307440B (en) * | 2013-06-21 | 2015-07-15 | 连云港市拓普科技发展有限公司 | Special rotating joint for ultra-low-temperature fluid loading and unloading arm |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130501 |
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| CX01 | Expiry of patent term |