CN201650839U - Dry-gas seal of cracked gas compressor - Google Patents
Dry-gas seal of cracked gas compressor Download PDFInfo
- Publication number
- CN201650839U CN201650839U CN2010201061387U CN201020106138U CN201650839U CN 201650839 U CN201650839 U CN 201650839U CN 2010201061387 U CN2010201061387 U CN 2010201061387U CN 201020106138 U CN201020106138 U CN 201020106138U CN 201650839 U CN201650839 U CN 201650839U
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- gas seal
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Abstract
The utility model relates to a dry-gas seal, particularly to a dry-gas seal of a cracked gas compressor. The dry-gas seal of the cracked gas compressor comprises a front dry-gas seal set and a rear dry-gas seal set, which are connected in series; and intermediate comb teeth arranged between the front and rear dry-gas seal sets. The front dry-gas seal set bears most of the pressure of the technical process and adopts the applied ethylene gas as sealing medium; and the rear dry-gas seal set bears a small part of the pressure and adopts the nitrogen gas as sealing medium. The utility model has the benefits that the sealing end surfaces are out of contact and the friction pair is in clearance friction with small frictional force, and therefore the service life of the dry-gas seal is prolonged and the power consumption is reduced; the series-type dry-gas seal is adopted to improve the safety and allow the combustible and explosive media together with the buffer gas to be delivered to the torch for burning up, without leakage to the external air; other gases incompatible to the technical process are not allowed to ensure the processing performance of the final product; the applied ethylene gas as sealing medium takes the anti-coking function; and the wedged-ring driving mode is adopted to improve the reliability of the driving operation.
Description
Technical field
The utility model relates to dry gas seals, is specifically related to a kind ofly one in front and one in back be composed in series by two cover dry gas seals, is provided with the Cracked Gas Compressor Dry Gas Seal of labyrinth seal between the dry gas seals of front and back.
Background technique
Charge gas compressor is one of ethylene unit " core three machines ", is the tap of whole ethylene unit, and can it stablize, and operation reliably is the ordinary production of the whole ethylene unit of influence directly.Floating-ring seal is adopted in charge gas compressor sealing usually, reduces the heat that is sealed in the high speed operation to be produced; Sealing liquid pressure is higher than pressure medium, guarantees that processing medium can not leak to environment.
Advantage: the contactless wearing and tearing of floating-ring seal, have high pressure resistant falling and the characteristics of high speed restrictions, can guarantee that compressor seal has long working life.
Shortcoming: sealing is higher to the required precision that machine adds part, leakage rate is bigger, sealing oil control system complexity, need special-purpose sealing oil pump and sealing oil pressure control system, strict to the pressure control of sealing oil, in case technological fluctuation takes place, be easy to cause a large amount of sealing oil toward the compressor casing internal leakage, greatly influence the compressor operation performance, cause destruction, even cause the compressor parking maintenance technology.
The model utility content
The purpose of this utility model is to address the above problem, and a kind of Cracked Gas Compressor Dry Gas Seal is provided, and this tandem dry gas seals one in front and one in back is composed in series broach in the middle of being provided with between the dry gas seals of front and back by two cover dry gas seals.Most pressure of technology are born in preceding sealing, and sealing medium is for drawing ethylene gas outward; Very little pressure is born in the back sealing, and sealing medium is a nitrogen.
For reaching above-mentioned purpose, the utility model adopts following scheme: a kind of Cracked Gas Compressor Dry Gas Seal, it mainly is the axle sleeve that rotates by with rotating shaft, reach the tandem dry gas sealing structure that one-level end face seal and secondary end face seal one in front and one in back connect to form, be provided with labyrinth seal between described first order end face seal and the second level end face seal.
The Cracked Gas Compressor Dry Gas Seal that provides according to the utility model, described one-level end face seal comprises one-level spring seat, one-level rotating ring and one-level stationary ring, and described secondary end face seal comprises rotating seat, secondary rotating ring, secondary stationary ring and the two-level spring seat that is arranged at the outside, axle sleeve stage casing; Described one-level spring seat and two-level spring seat sheathed successively with axle sleeve outside, described rotating seat is sheathed between one-level spring seat and the two-level spring seat; Described one-level rotating ring and one-level stationary ring are arranged between one-level spring seat and the rotating seat, and described secondary rotating ring and secondary stationary ring are arranged between rotating seat and the two-level spring seat; Described labyrinth seal is arranged at the inboard of one section of the rotating seat of one-level spring seat, cooperates with rotating seat.
According to the Cracked Gas Compressor Dry Gas Seal that the utility model provides, described Cracked Gas Compressor Dry Gas Seal also is provided with clamping sleeve in secondary end face seal one end of axle sleeve, and there is Yi Liba described clamping sleeve inboard, and upright dam is closely against secondary end face seal one end of axle sleeve.
According to the Cracked Gas Compressor Dry Gas Seal that the utility model provides, be provided with throw-out collar between described one-level stationary ring and the one-level spring seat, be provided with spring between aforementioned throw-out collar and the one-level spring seat.
According to the Cracked Gas Compressor Dry Gas Seal that the utility model provides, be provided with throw-out collar between described secondary stationary ring and the two-level spring seat, be provided with spring between aforementioned throw-out collar and the two-level spring seat.
According to the Cracked Gas Compressor Dry Gas Seal that the utility model provides, described one-level spring seat and two-level spring seat joint are provided with the fixedly screw of usefulness.
According to the Cracked Gas Compressor Dry Gas Seal that the utility model provides, described axle sleeve arranged outside is useful on the driving pin that drives rotating seat.
According to the Cracked Gas Compressor Dry Gas Seal that the utility model provides, the position of described one-level spring seat between one-level stationary ring and one-level labyrinth seal is provided with one-level and reveals mouth.
According to the Cracked Gas Compressor Dry Gas Seal that the utility model provides, the position of described two-level spring seat between secondary rotating ring and secondary stationary ring is provided with the cushion gas inlet.
According to the Cracked Gas Compressor Dry Gas Seal that the utility model provides, described one-level rotating ring and secondary rotating ring are set to the cambridge ring structure.
The beneficial effects of the utility model are:
1, seal face does not contact, and friction pair is in the gap friction, and frictional force is little, thereby the sealing long service life is low in energy consumption.
2, adopt the tandem dry gas seals, safety, inflammable and explosive medium can not leak in the air, burns and be discharged to torch with cushion gas; Simultaneously, other and the inconsistent gas of technology can not enter processing medium, can not influence the technology capability of product.
3, blanket gas draws ethylene gas outside adopting, and reaches the function of anti-coking.[cracking gas (processing medium) component complexity, and contain a large amount of unsaturated hydrocarbon.Cracking gas is compressed in the process, because gas temperature raises, unsaturated hydrocarbon produces coking phenomenon, so process gas is very dirty.For a long time, just because of the serious reason of cracking gas coking, charge gas compressor is the forbidden zone that dry gas seals is used always.] the outer ethylene gas that draws, through handling, have totally the characteristics that temperature is low.With it as blanket gas, make in the Seal cage major part be full of clean ethylene gas and temperature lower, prevent to seal the intracavity gas coking thereby reach, influence dry gas sealing property.
4, driving mode adopts the cambridge ring mode, has improved the reliability that drives.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is a rotating ring structural representation of the present utility model;
Among the figure: 1, axle, 2, the body cavity, 3, the body labyrinth seal, 4, the one-level spring seat, 501, one-level rotating ring, 502, one-level stationary ring, 6, the one-level labyrinth seal, 701, secondary rotating ring, 702, the secondary stationary ring, 8, the two-level spring seat, 9, secondary body labyrinth seal, 10, clamping sleeve, 11, isolate the gas inlet, 12, secondary is revealed mouthful, and 13, the cushion gas inlet, 14, rotating seat, 15, one-level is revealed mouthful, and 16, axle sleeve, 17, the blanket gas inlet.
Embodiment
Below in conjunction with Figure of description this mode of execution is further specified:
As shown in Figure 1, this Cracked Gas Compressor Dry Gas Seal, it mainly is the axle sleeve 16 that rotates by with rotating shaft 1, reach the tandem dry gas sealing structure that one-level end face seal and secondary end face seal one in front and one in back connect to form, be provided with labyrinth seal 6 between described first order end face seal and the second level end face seal.
Described one-level end face seal comprises one-level spring seat 4, one-level rotating ring 501 and one-level stationary ring 502, and described secondary end face seal comprises rotating seat 14, secondary rotating ring 701, secondary stationary ring 702 and the two-level spring seat 8 that is arranged at the outside, axle sleeve 16 stage casings; Described one-level spring seat 4 and two-level spring seat 8 sheathed successively with axle sleeve 16 outside, described rotating seat 14 is sheathed between one-level spring seat 4 and the two-level spring seat 8; Described one-level rotating ring 501 and one-level stationary ring 502 are arranged between one-level spring seat 4 and the rotating seat 14, and described secondary rotating ring 701 and secondary stationary ring 702 are arranged between rotating seat 14 and the two-level spring seat 8; Described labyrinth seal 6 is arranged at the inboard of 14 1 sections of the rotating seats of one-level spring seat 4, cooperates with rotating seat 14.
Described Cracked Gas Compressor Dry Gas Seal also is provided with clamping sleeve 10 in secondary end face seal one end of axle sleeve 16, and there is Yi Liba described clamping sleeve 10 inboards, and upright dam is closely against secondary end face seal one end of axle sleeve 16.
Be provided with throw-out collar between described one-level stationary ring 502 and the one-level spring seat 4, be provided with spring between aforementioned throw-out collar and the one-level spring seat 4.
Be provided with throw-out collar between described secondary stationary ring 702 and the two-level spring seat 8, be provided with spring between aforementioned throw-out collar and the two-level spring seat 8.
Described one-level spring seat 4 and two-level spring seat 8 joints are provided with the fixedly screw of usefulness.
Described axle sleeve 16 arranged outside are useful on the driving pin that drives rotating seat 14.
The position of described one-level spring seat between one-level stationary ring 502 and one-level labyrinth seal 6 is provided with one-level and reveals mouth 15.
The position of described two-level spring seat between secondary rotating ring 701 and secondary stationary ring 702 is provided with cushion gas inlet 11.
As shown in Figure 2, described one-level rotating ring 501 and secondary rotating ring 701 are set to the cambridge ring structure, and one-level rotating ring 501 and secondary rotating ring 701 adopt pressureless sintering SiC to make.
One-level end face seal one side of this Cracked Gas Compressor Dry Gas Seal has the original body labyrinth seal 3 of charge gas compressor, and being provided with of described one-level spring seat 4 inserted body labyrinth seal 3, prevented the stop pin that self rotates; Be provided with blanket gas inlet 17 between body labyrinth seal 3 and the one-level spring seat 4.Opposite side has the original secondary body of charge gas compressor labyrinth seal 9, and it cooperates the formation sealing with clamping sleeve 10, and it also is provided with isolates gas inlet 11 and secondary leakage mouth 12; The outside of Cracked Gas Compressor Dry Gas Seal is the original body cavity 2 of charge gas compressor, and it is provided with blanket gas inlet 17, one-level leakage seal gas inlet and reveals mouthfuls 15 and cushion gas 13 corresponding outlet or the inlets that enter the mouth.
Working principle:
1. blanket gas pressure is higher than medium gas, adds 1 effect of upper machine body labyrinth seal, guarantees that most of in the A cavity is blanket gas (clean ethylene gas)---play the anti-coking effect
2. cushion gas pressure is lower than blanket gas pressure, adds 6 effects of upper level labyrinth seal, makes the blanket gas (clean ethylene gas) and a large amount of cushion gas (nitrogen) that only contain small leakage in the B cavity.Be discharged to torch burning by one-level leakage hole 15.Only contain cushion gas (nitrogen) in the C chamber
3. by secondary seal, leak into a small amount of cushion gas of having only of D chamber (nitrogen), reveal mouthful 12 rows to atmosphere by secondary, nitrogen does not pollute atmosphere.
4. isolate gas and 9 effects of secondary body labyrinth seal, make lubricant oil can not enter sealing, technology capability is impacted.
Claims (10)
1. Cracked Gas Compressor Dry Gas Seal, it is characterized in that: described Cracked Gas Compressor Dry Gas Seal mainly is the axle sleeve (16) that rotates by with rotating shaft (1), reach the tandem dry gas sealing structure that one-level end face seal and secondary end face seal one in front and one in back connect to form, be provided with labyrinth seal (6) between described first order end face seal and the second level end face seal.
2. Cracked Gas Compressor Dry Gas Seal according to claim 1, it is characterized in that: described one-level end face seal comprises one-level spring seat (4), one-level rotating ring (501) and one-level stationary ring (502), and described secondary end face seal comprises rotating seat (14), secondary rotating ring (701), secondary stationary ring (702) and the two-level spring seat (8) that is arranged at the outside, axle sleeve (16) stage casing; Described one-level spring seat (4) and two-level spring seat (8) sheathed successively with axle sleeve (16) outside, described rotating seat (14) is sheathed between one-level spring seat (4) and the two-level spring seat (8); Described one-level rotating ring (501) and one-level stationary ring (502) are arranged between one-level spring seat (4) and the rotating seat (14), and described secondary rotating ring (701) and secondary stationary ring (702) are arranged between rotating seat (14) and the two-level spring seat (8); Described labyrinth seal (6) is arranged at the inboard of (14) one sections of the rotating seats of one-level spring seat (4), cooperates with rotating seat (14).
3. Cracked Gas Compressor Dry Gas Seal according to claim 1, it is characterized in that: described Cracked Gas Compressor Dry Gas Seal also is provided with clamping sleeve (10) in secondary end face seal one end of axle sleeve (16), there is Yi Liba described clamping sleeve (10) inboard, and upright dam is closely against secondary end face seal one end of axle sleeve (16).
4. Cracked Gas Compressor Dry Gas Seal according to claim 1 is characterized in that: be provided with throw-out collar between described one-level stationary ring (502) and the one-level spring seat (4), be provided with spring between aforementioned throw-out collar and the one-level spring seat (4).
5. Cracked Gas Compressor Dry Gas Seal according to claim 1 is characterized in that: be provided with throw-out collar between described secondary stationary ring (702) and the two-level spring seat (8), be provided with spring between aforementioned throw-out collar and the two-level spring seat (8).
6. Cracked Gas Compressor Dry Gas Seal according to claim 1 is characterized in that: described one-level spring seat (4) and two-level spring seat (8) joint are provided with the fixedly screw of usefulness.
7. Cracked Gas Compressor Dry Gas Seal according to claim 1 is characterized in that: described axle sleeve (16) arranged outside is useful on the driving pin that drives rotating seat (14).
8. Cracked Gas Compressor Dry Gas Seal according to claim 1 is characterized in that: the position of described one-level spring seat between one-level stationary ring (502) and one-level labyrinth seal (6) is provided with one-level and reveals mouthful (15).
9. Cracked Gas Compressor Dry Gas Seal according to claim 1 is characterized in that: the position of described two-level spring seat between secondary rotating ring (701) and secondary stationary ring (702) is provided with cushion gas inlet (11).
10. Cracked Gas Compressor Dry Gas Seal according to claim 1 is characterized in that: described one-level rotating ring (501) and secondary rotating ring (701) are set to the cambridge ring structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201061387U CN201650839U (en) | 2010-02-02 | 2010-02-02 | Dry-gas seal of cracked gas compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201061387U CN201650839U (en) | 2010-02-02 | 2010-02-02 | Dry-gas seal of cracked gas compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201650839U true CN201650839U (en) | 2010-11-24 |
Family
ID=43116074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201061387U Expired - Fee Related CN201650839U (en) | 2010-02-02 | 2010-02-02 | Dry-gas seal of cracked gas compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201650839U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564788A (en) * | 2015-01-12 | 2015-04-29 | 大连华阳密封股份有限公司 | Dry gas seal for back pressure prevention pump used in medium which contains suspended solids |
| CN104769227A (en) * | 2012-10-25 | 2015-07-08 | 西门子公司 | Process gas compressor/gas turbine section |
| CN105757253A (en) * | 2016-04-26 | 2016-07-13 | 成都通密封股份有限公司 | Dry gas seal of long-distance pipeline natural gas compressor unit |
| CN107237891A (en) * | 2017-08-08 | 2017-10-10 | 内蒙古鄂尔多斯联合化工有限公司 | A kind of equipment of natural gas compressor dry gas seals |
| JP2017531142A (en) * | 2014-09-29 | 2017-10-19 | ニュー ウェイ マシーン コンポーネンツ、インコーポレイテッド | Thrust bearing as seal |
| CN111043069A (en) * | 2019-12-18 | 2020-04-21 | 沈阳透平机械股份有限公司 | Dry gas sealing control system for centrifugal compressor |
| CN111765115A (en) * | 2020-06-03 | 2020-10-13 | 南京工程学院 | Fingertip type dry gas sealing device |
| CN114483606A (en) * | 2020-11-11 | 2022-05-13 | 中国石油化工股份有限公司 | Centrifugal compressor |
| CN114753890A (en) * | 2022-04-27 | 2022-07-15 | 重庆江增船舶重工有限公司 | Dry gas seal of supercritical carbon dioxide turbine and leakage monitoring method thereof |
-
2010
- 2010-02-02 CN CN2010201061387U patent/CN201650839U/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104769227A (en) * | 2012-10-25 | 2015-07-08 | 西门子公司 | Process gas compressor/gas turbine section |
| CN104769227B (en) * | 2012-10-25 | 2016-05-18 | 西门子公司 | Process gas compressor-gas turbine engine systems |
| US9915161B2 (en) | 2012-10-25 | 2018-03-13 | Siemens Aktiengesellschaft | Process gas compressor/gas turbine section |
| JP2017531142A (en) * | 2014-09-29 | 2017-10-19 | ニュー ウェイ マシーン コンポーネンツ、インコーポレイテッド | Thrust bearing as seal |
| CN104564788A (en) * | 2015-01-12 | 2015-04-29 | 大连华阳密封股份有限公司 | Dry gas seal for back pressure prevention pump used in medium which contains suspended solids |
| CN105757253A (en) * | 2016-04-26 | 2016-07-13 | 成都通密封股份有限公司 | Dry gas seal of long-distance pipeline natural gas compressor unit |
| CN107237891A (en) * | 2017-08-08 | 2017-10-10 | 内蒙古鄂尔多斯联合化工有限公司 | A kind of equipment of natural gas compressor dry gas seals |
| CN111043069A (en) * | 2019-12-18 | 2020-04-21 | 沈阳透平机械股份有限公司 | Dry gas sealing control system for centrifugal compressor |
| CN111765115A (en) * | 2020-06-03 | 2020-10-13 | 南京工程学院 | Fingertip type dry gas sealing device |
| CN111765115B (en) * | 2020-06-03 | 2021-08-10 | 南京工程学院 | Fingertip type dry gas sealing device |
| CN114483606A (en) * | 2020-11-11 | 2022-05-13 | 中国石油化工股份有限公司 | Centrifugal compressor |
| CN114483606B (en) * | 2020-11-11 | 2024-03-26 | 中国石油化工股份有限公司 | Centrifugal compressor |
| CN114753890A (en) * | 2022-04-27 | 2022-07-15 | 重庆江增船舶重工有限公司 | Dry gas seal of supercritical carbon dioxide turbine and leakage monitoring method thereof |
| CN114753890B (en) * | 2022-04-27 | 2023-10-24 | 重庆江增船舶重工有限公司 | Dry gas seal of supercritical carbon dioxide turbine and leakage monitoring method thereof |
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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 |