CN201644244U - Dry gas seal of centrifugal machine - Google Patents
Dry gas seal of centrifugal machine Download PDFInfo
- Publication number
- CN201644244U CN201644244U CN2010201060878U CN201020106087U CN201644244U CN 201644244 U CN201644244 U CN 201644244U CN 2010201060878 U CN2010201060878 U CN 2010201060878U CN 201020106087 U CN201020106087 U CN 201020106087U CN 201644244 U CN201644244 U CN 201644244U
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- dry gas
- ring
- moving ring
- rotating ring
- gas seal
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Abstract
The utility model discloses dry gas seal of a centrifugal machine, relating to dry gas seal, in particular to dry gas seal of the centrifugal machine, which comprises a moving ring and static rings, wherein the static rings are symmetrically arranged on two sides of the moving ring. The dry gas seal of the centrifugal machine mainly comprises a moving ring, two spring seats and two static rings; the moving ring is sleeved on a shaft; the inner wall of the moving ring is connected with the outer wall of a shaft sleeve; the inner wall part on the end face of the atmospheric side of the moving ring is abutted against the shaft sleeve; the first static ring and the first spring seat are sequentially sleeved on the moving ring towards the atmospheric direction; and the second static ring and the second spring seat are sequentially arranged on the moving ring towards the medium side direction. When being applied to the centrifugal machine in which a machine unit has large shaft diameter with phi 220mm, the rotor vibration is large and process materials contain large amount of dust, the utility model ensures that the overhaul period of the machine unit is prolonged to 2-3 years from the original three months and provides the guarantee for normal production of the device.
Description
Technical field:
The utility model relates to dry gas seals, is specifically related to rotating ring of a kind of employing, and stationary ring is symmetricly set in the centrifuge dry gas seals of rotating ring both sides.
Background technology:
The general employing of the unit sealing mechanical seal of existing centrifuge, oil leakage quantity is very big, if the unit diameter of axle big (φ 220mm), rotor oscillation is very big, and process stream contains a large amount of dust, then is difficult to guarantee seal request especially, and have only 2～3 months sealing life usually.
The utility model content:
The utility model is intended to solve the problems referred to above of existing centrifuge dry gas seals, provides a kind of employing a rotating ring, and stationary ring is symmetricly set in the centrifuge dry gas seals of rotating ring both sides.
For reaching above-mentioned purpose, the utility model adopts following scheme: a kind of centrifuge dry gas seals, described centrifuge dry gas seals mainly comprise a rotating ring and two spring bases and two stationary rings; Described moving ring sleeve is located at axle, and the inwall of rotating ring is connected with the outer wall of axle sleeve, the inside part of rotating ring atmospheric side end face and axle sleeve butt; Rotating ring is arranged with first stationary ring and first spring base successively to the atmospheric side direction; Rotating ring is arranged with second stationary ring and second spring base successively to the side medium direction.
According to the centrifuge dry gas seals that the utility model provides, also be respectively equipped with first throw-out collar and second throw-out collar between described first spring base and first stationary ring and between second spring base and second stationary ring.
According to the centrifuge dry gas seals that the utility model provides, also be respectively equipped with spring between described first spring base and first throw-out collar and between second spring base and second throw-out collar.
According to the centrifuge dry gas seals that the utility model provides, be respectively equipped with the opposite helicla flute of the hand of spiral on the described rotating ring end faces of both sides.
The beneficial effects of the utility model are:
1, media end adopts the clean hexanes flushing, has isolated dust and has entered sealing area.Cushion gas adopts inert gas (nitrogen), and pressure is higher than processing medium; Prevent that dangerous processing medium from leaking, and nitrogen enters processing medium, can not exert an influence the processing performance of medium.
2, because the centrifugal compressor diameter of axle and vibration are very big, adopt non-rotating floating ring structure, avoided large-diameter, the floating ring floatability can be poor under the good condition of starting building.Simultaneously, utilize finite element analysis (FEA) model and computational fluid dynamics (CFD) to carry out the flute profile design, by advanced person's engineering calculation instrument (ANSYS) simulation sealing working condition, repeatedly to sealing ring flute profile design improvement to the flute profile of rotating ring.Finally designed and met large-diameter, the sealing ring flute profile of the good condition of starting building.Make it to produce and stablize air film with certain rigidity.
3, the selection of dynamic and static ring material.Because the diameter of axle is very big, require higher relatively to sealing friction pair.Rotating ring adopts performance high-quality pressureless sintering carborundum, and stationary ring adopts the Imported High-performance heavy duty to soak the antimony graphite annulus.For the sealing property that seals high-quality provides guarantee.
In sum, the utility model is being applied to the unit diameter of axle big (φ 220mm), and rotor oscillation is very big, and process stream is when containing the centrifuge of a large amount of dust, make the unit maintenance phase extend to 2～3 years, for the ordinary production of installing provides guarantee by original 3 months.Simultaneously, for the dry gas seals product at large-diameter, big vibration, the road that contained application extension on the dust equipment.
Description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2, Fig. 3 are respectively the both ends of the surface structural representations of rotating ring;
Among the figure: 1, centrifuge cavity, 2, axle, 3, axle sleeve, 4, first spring base, 5, first throw-out collar, 6, first stationary ring, 7, rotating ring, 8, second stationary ring, 9, second throw-out collar, 10, second spring base.
The specific embodiment:
Below in conjunction with Figure of description this embodiment is further specified:
As shown in Figure 1, the utility model mainly comprises a rotating ring 7 and two spring bases and two stationary rings; Rotating ring 7 is sheathed on axle 2, and the inwall of rotating ring 7 is connected with the outer wall of axle sleeve 3, the inside part of rotating ring 7 atmospheric side end faces and axle sleeve 3 butts; Rotating ring 7 is arranged with first stationary ring 6 and first spring base 4 successively to the atmospheric side direction; Rotating ring 7 is arranged with second stationary ring 8 and second spring base 10 successively to the side medium direction.
Also be respectively equipped with first throw-out collar 5 and second throw-out collar 9 between first spring base 4 and first stationary ring 6 and between second spring base 10 and second stationary ring 8.
Also be respectively equipped with spring between first spring base 4 and first throw-out collar 5 and between second spring base 10 and second throw-out collar 9.
Centrifuge cavity 1 is provided with sealer passage and irrigation channel, the sealer passage interior side opening be positioned at rotating ring 7 outsides, be positioned at should the dry gas seals media end for side opening in the irrigation channel.Media end adopts the clean hexanes flushing, has isolated dust and has entered sealing area.Cushion gas adopts inert nitrogen gas, and pressure is higher than processing medium.
As shown in Figure 2, be respectively equipped with the opposite helicla flute of the hand of spiral on rotating ring 7 end faces of both sides.
Rotating ring 7 adopts performance high-quality pressureless sintering carborundum, and two stationary rings adopt the Imported High-performance heavy duty to soak the antimony graphite annulus.
Claims (4)
1. centrifuge dry gas seals, it is characterized in that: described centrifuge dry gas seals mainly comprises a rotating ring (7) and two spring bases and two stationary rings; Described rotating ring (7) is sheathed on axle (2), and the inwall of rotating ring (7) is connected with the outer wall of axle sleeve (3), the inside part of rotating ring (7) atmospheric side end face and axle sleeve (3) butt; Rotating ring (7) is arranged with first stationary ring (6) and first spring base (4) successively to the atmospheric side direction; Rotating ring (7) is arranged with second stationary ring (8) and second spring base (10) successively to the side medium direction.
2. centrifuge dry gas seals according to claim 1 is characterized in that: also be respectively equipped with first throw-out collar (5) and second throw-out collar (9) between described first spring base (4) and first stationary ring (6) and between second spring base (10) and second stationary ring (8).
3. centrifuge dry gas seals according to claim 2 is characterized in that: also be respectively equipped with spring between described first spring base (4) and first throw-out collar (5) and between second spring base (10) and second throw-out collar (9).
4. centrifuge dry gas seals according to claim 1 is characterized in that: be respectively equipped with the opposite helicla flute of the hand of spiral on described rotating ring (7) end faces of both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201060878U CN201644244U (en) | 2010-02-02 | 2010-02-02 | Dry gas seal of centrifugal machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201060878U CN201644244U (en) | 2010-02-02 | 2010-02-02 | Dry gas seal of centrifugal machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201644244U true CN201644244U (en) | 2010-11-24 |
Family
ID=43109440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201060878U Expired - Fee Related CN201644244U (en) | 2010-02-02 | 2010-02-02 | Dry gas seal of centrifugal machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201644244U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106402395A (en) * | 2016-06-28 | 2017-02-15 | 四川大学 | Dry gas seal structure suitable for vibration detection |
| CN106574512A (en) * | 2014-05-30 | 2017-04-19 | 诺沃皮尼奥内股份有限公司 | Sealing device for turbomachines |
| CN108591476A (en) * | 2018-04-23 | 2018-09-28 | 西安交通大学 | A kind of dry gas sealing device suitable for overcritical working medium |
| CN108679231A (en) * | 2018-07-27 | 2018-10-19 | 中国大唐集团科学技术研究院有限公司华中分公司 | Turbo-generator Set hydrogen seal device and encapsulating method |
| CN109382222A (en) * | 2018-11-14 | 2019-02-26 | 浙江轻机实业有限公司 | The method of adjustment of disk centrifuge raising liquid-phase outlet pressure |
-
2010
- 2010-02-02 CN CN2010201060878U patent/CN201644244U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106574512A (en) * | 2014-05-30 | 2017-04-19 | 诺沃皮尼奥内股份有限公司 | Sealing device for turbomachines |
| US10400787B2 (en) | 2014-05-30 | 2019-09-03 | Nuovo Pignone Srl | Sealing device for turbomachines |
| CN106402395A (en) * | 2016-06-28 | 2017-02-15 | 四川大学 | Dry gas seal structure suitable for vibration detection |
| CN108591476A (en) * | 2018-04-23 | 2018-09-28 | 西安交通大学 | A kind of dry gas sealing device suitable for overcritical working medium |
| CN108591476B (en) * | 2018-04-23 | 2019-08-23 | 西安交通大学 | A kind of dry gas sealing device suitable for overcritical working medium |
| CN108679231A (en) * | 2018-07-27 | 2018-10-19 | 中国大唐集团科学技术研究院有限公司华中分公司 | Turbo-generator Set hydrogen seal device and encapsulating method |
| CN109382222A (en) * | 2018-11-14 | 2019-02-26 | 浙江轻机实业有限公司 | The method of adjustment of disk centrifuge raising liquid-phase outlet pressure |
| CN109382222B (en) * | 2018-11-14 | 2023-11-24 | 浙江轻机实业有限公司 | Adjusting method for improving liquid phase outlet pressure of disc separator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101124 Termination date: 20150202 |
|
| EXPY | Termination of patent right or utility model |