CN205533080U - Dry -gas seal of cracked gas compressor - Google Patents
Dry -gas seal of cracked gas compressor Download PDFInfo
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- CN205533080U CN205533080U CN201620083143.8U CN201620083143U CN205533080U CN 205533080 U CN205533080 U CN 205533080U CN 201620083143 U CN201620083143 U CN 201620083143U CN 205533080 U CN205533080 U CN 205533080U
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- ring
- seal
- spring base
- rotating ring
- rotating
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Abstract
The utility model relates to a by the sealed dry -gas seal of cracked gas compressor who constitutes of two sets of dry gas, establish axle sleeve, one -level sealing mechanism and the second grade sealing mechanism outside the pivot including the cover, one -level sealing mechanism includes first rotating ring, two quiet rings and two spring holders, first rotating ring cover is established outside the axle sleeve, is equipped with the seal groove on the terminal surface of first rotating ring both sides respectively, and first rotating ring is close to the medium side and is equipped with the first spring holder of first quiet ring sum in proper order, is equipped with elastic element between the first spring holder of first quiet ring sum, the opposite side of first rotating ring is equipped with the quiet ring sum second spring holder of second in proper order, is equipped with elastic element between the quiet ring sum second spring holder of second, it is sealed to be equipped with the broach between one -level leakage hole and the cushion gas entry. Through adopting two -stage sealing mechanism to one -level sealing mechanism adopts a rotating ring and two quiet ring settings, when simplifying the structure, has improved sealed stability and the leakproofness of charge gas compressor, has reduced and has let out leakage quantity.
Description
Technical field
The utility model relates to dry gas seals technical field, is specifically related to a kind of be made up of two set dry gas seals
Cracked Gas Compressor Dry Gas Seal.
Background technology
Charge gas compressor is the first process of transferring raw material in ethylene process, is the crucial machine of whole technique
Group, it limits device single line maximum capacity.Charge gas compressor seals and generally uses floating-ring seal, reduces
It is sealed in high-speed cruising produced heat；Sealing liquid pressure is higher than pressure medium, it is ensured that processing medium will not
Leak to environment.Often less stable in seal process, poorly sealed close, once generating process fluctuation,
Seal Oil leakage rate is big, has a strong impact on cracking gas composition, even can cause coke heavy in unit, greatly
Have impact on unit long-period stable operation.
Utility model content
The purpose of this utility model is that providing a kind of is applicable to cracking gas by what two-stage dry gas seals was composed in series
The dry gas seals of compressor, and the Double End that sealing one rotating ring of employing of previous stage and two stationary rings form
Dry gas seals.Poor in dry gas seals upward stability for solving existing charge gas compressor, poorly sealed etc. ask
Topic.
In order to achieve the above object, the utility model employing technical scheme is: Cracked Gas Compressor Dry Gas Seal,
Including the axle sleeve being set in outside rotating shaft, primary seal mechanism and secondary seal mechanism, described primary seal mechanism
Place is provided with blanket gas entrance, is provided with cushion gas entrance at secondary seal mechanism, primary seal mechanism and two grades close
Being provided with one-level between sealing mechanism and reveal mouth, secondary seal mechanism is provided with two grades of leakage holes, institute near air side
Stating primary seal mechanism and include the first rotating ring, two stationary rings and two spring bases, described first moving ring sleeve is located at
Outside axle sleeve, the end face of the first rotating ring both sides being respectively equipped with some seal grooves, described seal groove is uniformly distributed
On end face；First rotating ring is sequentially provided with the first stationary ring and the first spring base near side medium, the first stationary ring and
It is provided with flexible member between first spring base；The opposite side of the first rotating ring is sequentially provided with the second stationary ring and the second bullet
Spring abutment, is provided with flexible member between the second stationary ring and the second spring base；Described one-level leakage hole and cushion gas enter
Labyrinth seal it is provided with between Kou.
Cracked Gas Compressor Dry Gas Seal as above, further illustrates as, described secondary seal mechanism
Including rotating seat, the second rotating ring, the 3rd stationary ring and the 3rd spring base, described rotating seat is set in outside axle sleeve,
One end of rotating seat abuts with the first rotating ring, is provided with the second rotating ring in the other end, and the second rotating ring is near air
Side is sequentially provided with the 3rd stationary ring and the 3rd spring base, is provided with elastic unit between the 3rd stationary ring and the 3rd spring base
Part.
Cracked Gas Compressor Dry Gas Seal as above, further illustrate into, described flexible member is ring
Shape elastic ring.
Cracked Gas Compressor Dry Gas Seal as above, further illustrate into, described flexible member is bullet
Spring and throw-out collar.
Cracked Gas Compressor Dry Gas Seal as above, further illustrate into, described one-level reveals mouth outlet
Place is provided with relief valve.
Cracked Gas Compressor Dry Gas Seal as above, further illustrate into, described first stationary ring and first
Between spring base, between the second stationary ring and the second spring base, set respectively between the 3rd stationary ring and the 3rd spring base
There is collar.
Cracked Gas Compressor Dry Gas Seal as above, further illustrate into, described seal groove includes footpath
To air supply trough and be positioned at two helicla flutes of air supply trough side, described spiral fluted direction of rotation and rotating shaft
Direction of rotation is suitable.
The beneficial effects of the utility model are: by using two-stage sealing mechanism, and primary seal mechanism adopts
Arrange with a rotating ring and two stationary rings, while simplifying structure, improve the steady of charge gas compressor sealing
Qualitative and sealing, decreases leakage rate.Go out to be provided with pressure-reducing valve at the first leakage hole, make the discharge of gas more
Add safety.Seal groove at the first rotating ring two ends includes air supply trough radially and is positioned at the spiral of air supply trough side
Groove, such design, sealing surface stress can be made to be more uniformly distributed rationally.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the first rotating ring one seal face seal groove structure schematic diagram.
In figure: 1, rotating shaft；2, axle sleeve；3, primary seal mechanism；30, blanket gas entrance；31, first
Rotating ring；32, the first stationary ring；33, the second stationary ring；34, the first spring base；35, the second spring base；4、
Secondary seal mechanism；40, cushion gas entrance；41, rotating seat；42, the second rotating ring；43, the 3rd stationary ring；
44, the 3rd spring base；5, one-level reveals mouth；6, two grades of leakage holes；7, flexible member；8, comb is close
Envelope；9, relief valve；10, collar；11, seal groove；110, air supply trough；111, helicla flute.
Detailed description of the invention
Below in conjunction with the accompanying drawings the utility model embodiment is done further details of elaboration.
As it is shown in figure 1, a kind of Cracked Gas Compressor Dry Gas Seal that the present embodiment provides, including being set in rotating shaft
Axle sleeve 2, primary seal mechanism 3 and secondary seal mechanism 4 outside 1, is provided with sealing at described primary seal mechanism 3
Gas entrance 30, is provided with cushion gas entrance 40, primary seal mechanism 3 and secondary seal machine at secondary seal mechanism 4
Being provided with one-level between structure 4 and reveal mouth 5, described one-level is revealed mouth 5 exit and is provided with pressure-reducing valve 9, is subtracted by design
Pressure valve 9, makes gas discharge safer.Secondary seal mechanism 4 is provided with two grades of leakage holes 6 near air side,
The left side of rotating shaft 1 be side medium, right side be atmospheric side.
Described primary seal mechanism 3 includes the first rotating ring 32,33 and two spring bases 34,35 of 31, two stationary rings,
Described first rotating ring 31 is set in outside axle sleeve 2, and the first rotating ring 31 rotates with axle sleeve 2.First rotating ring 31 liang
Being respectively equipped with some seal grooves 11 on the end face of side, described seal groove 11 is evenly distributed on end face.Such as Fig. 2
Shown in, described seal groove 11 includes air supply trough radially 110 and is positioned at two helicla flutes of air supply trough 110 side
111, the direction of rotation of described helicla flute 111 is suitable with the direction of rotation of rotating shaft 1, thus realizes end face seal,
Seal groove 11 uses such design, makes seal face be more uniformly stressed.First rotating ring 31 is near side medium
It is sequentially provided with the first stationary ring 32 and the first spring base 34, between the first stationary ring 32 and the first spring base 34, is provided with bullet
Property element 7, described flexible member 7 can be annular resilient collar, it is also possible to for spring and throw-out collar, when for bullet
When spring and throw-out collar, one end of spring is connected with the first stationary seat 34, the other end is connected with throw-out collar, throw-out collar away from
End face and first stationary ring 32 of spring abut, and flexible member 7 described below is same principle.First rotating ring
The opposite side of 31 is sequentially provided with the second stationary ring 33 and the second spring base 35, the second stationary ring 33 and the second spring base 35
Between be provided with flexible member 7；It is provided with labyrinth seal 8 between described one-level leakage hole 5 and cushion gas entrance 40.
Described secondary seal mechanism 4 includes rotating seat the 41, second rotating ring the 42, the 3rd stationary ring 43 and the 3rd spring
Seat 44, described rotating seat 41 is set in outside axle sleeve 2, and one end of rotating seat 41 abuts with the first rotating ring 31, another
Being provided with the second rotating ring 42 in end, the second rotating ring 42 is sequentially provided with the 3rd stationary ring 43 and the 3rd near the side of air
Spring base 44, is provided with flexible member 7 between the 3rd stationary ring 43 and the 3rd spring base 44.The utility model is by adopting
Use two-stage sealing mechanism, and primary seal mechanism uses a rotating ring and two stationary rings to arrange, and simplifies structure
While, improve stability and sealing that charge gas compressor seals, decrease leakage rate.
Between the first stationary ring 32 and the first spring base 34, between the second stationary ring 33 and the second spring base 35,
It is respectively equipped with collar 10 between three stationary rings 43 and the 3rd spring base 44.
The utility model is not limited to examples detailed above, in claims limited range of the present utility model
In, various deformation that those skilled in the art can make without creative work or amendment are all by this patent
Protection.
Claims (7)
1. Cracked Gas Compressor Dry Gas Seal, including being set in the outer axle sleeve (2) of rotating shaft (1), primary seal machine
Structure (3) and secondary seal mechanism (4), described primary seal mechanism (3) place is provided with blanket gas entrance (30),
Secondary seal mechanism (4) place is provided with cushion gas entrance (40), primary seal mechanism (3) and secondary seal machine
Being provided with one-level between structure (4) and reveal mouth (5), secondary seal mechanism (4) is provided with two grades near air side
Leakage hole (6), it is characterised in that: described primary seal mechanism (3) include the first rotating ring (31), two
Stationary ring (32,33) and two spring bases (34,35), described first rotating ring (31) is set in axle sleeve (1)
Outward, the end face of the first rotating ring (31) both sides is respectively equipped with some seal grooves (11), described seal groove (11)
Being evenly distributed on end face, the first rotating ring (31) is sequentially provided with the first stationary ring (32) and the near side medium
One spring base (34), is provided with flexible member (7) between the first stationary ring (32) and the first spring base (34)；
The opposite side of the first rotating ring (31) is sequentially provided with the second stationary ring (33) and the second spring base (35), and second is quiet
Flexible member (7) it is provided with between ring (33) and the second spring base (35)；Described one-level leakage hole (5) and
Labyrinth seal (8) it is provided with between cushion gas entrance (40).
Cracked Gas Compressor Dry Gas Seal the most according to claim 1, it is characterised in that: described two grades are close
Sealing mechanism (4) includes rotating seat (41), the second rotating ring (42), the 3rd stationary ring (43) and the 3rd spring base
(44), described rotating seat (41) is set in axle sleeve (2) outward, and one end of rotating seat (41) is moved with first
Ring (31) abuts, and is provided with the second rotating ring (42) in the other end, and the second rotating ring (42) is near the side of air
It is sequentially provided with the 3rd stationary ring (43) and the 3rd spring base (44), the 3rd stationary ring (43) and the 3rd spring base (44)
Between be provided with flexible member (7).
Cracked Gas Compressor Dry Gas Seal the most according to claim 1 and 2, it is characterised in that: described bullet
Property element (7) is annular resilient collar.
Cracked Gas Compressor Dry Gas Seal the most according to claim 1 and 2, it is characterised in that: described bullet
Property element (7) is spring and throw-out collar.
Cracked Gas Compressor Dry Gas Seal the most according to claim 1, it is characterised in that: described one-level is revealed
Mouth (5) exit is provided with relief valve (9).
Cracked Gas Compressor Dry Gas Seal the most according to claim 1, it is characterised in that: described first stationary ring
Between (32) and the first spring base (34), between the second stationary ring (33) and the second spring base (35),
It is respectively equipped with collar (10) between 3rd stationary ring (43) and the 3rd spring base (44).
Cracked Gas Compressor Dry Gas Seal the most according to claim 1, it is characterised in that: described seal groove
(11) include air supply trough (110) radially and be positioned at two helicla flutes (111) of air supply trough (110) side,
The direction of rotation of described helicla flute (111) is suitable with the direction of rotation of rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620083143.8U CN205533080U (en) | 2016-01-27 | 2016-01-27 | Dry -gas seal of cracked gas compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620083143.8U CN205533080U (en) | 2016-01-27 | 2016-01-27 | Dry -gas seal of cracked gas compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205533080U true CN205533080U (en) | 2016-08-31 |
Family
ID=56771468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620083143.8U Active CN205533080U (en) | 2016-01-27 | 2016-01-27 | Dry -gas seal of cracked gas compressor |
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| Country | Link |
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| CN (1) | CN205533080U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838559A (en) * | 2019-03-05 | 2019-06-04 | 浙江工业大学 | A kind of static pressure dry gas seals stationary ring of band radial direction relief valve |
| CN110440001A (en) * | 2019-08-29 | 2019-11-12 | 浙江工业大学 | A kind of stationary ring replaceable mechanically-sealing apparatus |
| CN111188653A (en) * | 2020-03-06 | 2020-05-22 | 上海好米密封科技有限公司 | Gas lubrication dynamic pressure sealing device for miniature high-speed turboexpander |
| CN114483606A (en) * | 2020-11-11 | 2022-05-13 | 中国石油化工股份有限公司 | Centrifugal compressor |
-
2016
- 2016-01-27 CN CN201620083143.8U patent/CN205533080U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109838559A (en) * | 2019-03-05 | 2019-06-04 | 浙江工业大学 | A kind of static pressure dry gas seals stationary ring of band radial direction relief valve |
| CN109838559B (en) * | 2019-03-05 | 2024-03-29 | 浙江工业大学 | Static pressure dry gas sealing static ring with radial pressure release valve |
| CN110440001A (en) * | 2019-08-29 | 2019-11-12 | 浙江工业大学 | A kind of stationary ring replaceable mechanically-sealing apparatus |
| CN111188653A (en) * | 2020-03-06 | 2020-05-22 | 上海好米密封科技有限公司 | Gas lubrication dynamic pressure sealing device for miniature high-speed turboexpander |
| 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 |
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