CN201621091U - High-pressure compressor dry gas seal - Google Patents
High-pressure compressor dry gas seal Download PDFInfo
- Publication number
- CN201621091U CN201621091U CN2010201259523U CN201020125952U CN201621091U CN 201621091 U CN201621091 U CN 201621091U CN 2010201259523 U CN2010201259523 U CN 2010201259523U CN 201020125952 U CN201020125952 U CN 201020125952U CN 201621091 U CN201621091 U CN 201621091U
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- ring
- seat
- spring
- rotating
- carbocyclic ring
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- Structures Of Non-Positive Displacement Pumps (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model relates to a high-pressure compressor dry gas seal. A shaft sleeve is sleeved on a rotary shaft, one end surface of the shaft sleeve is a U-shaped groove, a movable ring A is embedded in the U-shaped groove of the shaft sleeve, an annular movable ring base sleeve is sleeved on the shaft sleeve, one end of the annular movable ring base sleeve contacts with the end surface of the movable ring A while the other end forms an L-shaped structure, a static ring A, a push ring A, a spring A and a spring base A are sequentially disposed in a space formed by the movable ring A and the movable ring base sleeve, a compressing sleeve is sleeved outside the shaft sleeve, the outer wall at one end of the compressing sleeve forms the U-shaped groove with the L-shaped structure of the movable ring base sleeve, a movable ring B is embedded in the U-shaped groove, a static ring B, a push ring B, a spring B and a spring base B are sequentially arranged, comb teeth are sealed at connecting positions of the spring base A, the spring base B and a movable ring base, a carbon ring gland is fixed on a carbon ring base fixed on the spring base B, and a carbon retainer ring, a carbon ring and a carbon ring pull spring are disposed between the carbon ring gland and the carbon ring base. The high-pressure compressor dry gas seal can bear pressure of 17.2 MPa which is larger than pressure of 10.0 MPa born by domestic compressor dry gas seals.
Description
Technical field
The utility model relates to seal arrangement, is specifically related to a kind of high pressure compressor dry gas seals.
Background technique
Dry gas seals has that long service life, power consumpiton are little, processing medium is not without advantages such as leakages, has sealed up widely-usedly at present at the high speed centrifugation compressor shaft, but on the compressor of pressure greater than 10Mpa, the dry gas seals product is almost monopolized by offshore company.The high pressure dry gas seals product of offshore company in use, not only have problems such as import spare part length at delivery date, price height, and a cover is only arranged, sealing is in case the fault that meets accident, being prone to unit does not have the situation that seals spare part, will directly have influence on the safe operation of process units.
The model utility content
The purpose of this utility model provides and a kind ofly bears that pressure is big, the intensity of end face air film and the high high pressure compressor dry gas seals of stability, prolongs dry gas seals working life, strengthens the safety and the stability of its use, reduces purchase cost.
High pressure compressor dry gas seals described in the utility model is the axle sleeve that rotates by with rotating shaft, the tandem dry gas sealing structure that first order end face seal and second level end face seal connect to form, the labyrinth seal that is provided with between first order end face seal and the second level end face seal, the carbocyclic ring sealing that a side of second level end face seal is provided with constitutes;
Sleeve diameter and rotating shaft external diameter are complementary, and are enclosed within the rotating shaft, and an end and rotating shaft are fixing also can rotate with rotating shaft, and the other end end face is an outstanding and [shape groove vertical with the rotating shaft diameter;
First order end face seal is made of rotating ring A, stationary ring A, spring seat A, throw-out collar A, spring A and rotating seat; Rotating ring A is embedded in axle sleeve [in the shape groove, annular rotating seat internal diameter and axle sleeve external diameter are complementary, be enclosed within on the axle sleeve, one end contacts with rotating ring A end face, the other end constitute one " shape structure; stationary ring A, throw-out collar A, spring A and spring seat A are successively set in the space that rotating ring A and rotating ring cover for seat form, and spring seat A is fixed on the rotating seat;
Second level end face seal is by rotating ring B, stationary ring B, spring seat B, throw-out collar B, spring B and clamping sleeve constitute, clamping sleeve internal diameter and axle sleeve external diameter are complementary, be enclosed within axle sleeve outer and with the axle sleeve relative fixed, clamping sleeve one end outer wall and rotating ring cover for seat " the shape structure constitute [the shape groove; rotating ring B be embedded in [in the shape groove, be followed successively by stationary ring B, throw-out collar B, spring B and spring seat B, spring seat B is fixed on the spring seat A by attachment screw;
Labyrinth seal is arranged at spring seat A, spring seat B and rotating seat three's jointing place;
The carbocyclic ring sealing is made of carbon gland, carbocyclic ring back-up ring, carbocyclic ring seat, carbocyclic ring and carbocyclic ring extension spring; Carbon gland is fixed on the carbocyclic ring seat, and the carbocyclic ring seat is fixed on the spring seat B, and carbocyclic ring back-up ring, carbocyclic ring and carbocyclic ring extension spring are arranged between carbon gland and the carbocyclic ring seat;
Be provided with stop pin A and stop pin B in the carbocyclic ring sealing;
Spring seat B is provided with stop pin C near the position of throw-out collar B;
The adjacent position of stationary ring A of the outer wall of axle sleeve and first order end face seal is provided with driving pin;
Rotating ring A and rotating ring B end faces of both sides are provided with circular-arc " scholar " font fluid dynamic pressure groove in turning.
In sum, the tandem dry gas seals that the utility model mainly is made up of the first order and second level end face seal is provided with labyrinth seal between the first order and second level seal face, and sealing back, the second level is provided with the carbocyclic ring sealing.First order sealing can be born 17.2Mpa pressure, and second level sealing also can be born 17.2Mpa pressure as the backup seal of first order sealing.Other compressor dry gas seals that this sealing structure can bear the pressure ratio domestic production can be born pressure and are improved largely.The pressure that state's inner compressor dry gas seals can bear is all less than 10.0Mpa.Under high pressure the stability of dry gas seals end face air film is the key of high-pressure centrifugal compressor dry gas seals technology, and seal face adopts circular arc " scholar " word fluid dynamic pressure groove, has improved the intensity and the stability of end face air film greatly.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the both ends of the surface structural representation of rotating ring;
Among the figure: 1 rotating shaft, 2 axle sleeves, 3 rotating ring A, 4 spring A, 5 stationary ring A, 6 throw-out collar A, 7 spring B, 8 spring seat A, 9 rotating seats, 10 attachment screws, 11 labyrinth seals, 12 rotating ring B, 13 stationary ring B, 14 clamping sleeves, 15 throw-out collar B, 16 spring seat B, 17 carbon glands, 18 carbocyclic ring back-up rings, 19 carbocyclic ring seats, 20 carbocyclic rings, 21 carbocyclic ring extension springs, 22 stop pin A, 23 stop pin B, 24 stop pin C, 25 driving pins.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail:
High pressure compressor dry gas seals described in the utility model is the axle sleeve that rotates by with rotating shaft, the tandem dry gas sealing structure that first order end face seal and second level end face seal connect to form, the labyrinth seal that is provided with between first order end face seal and the second level end face seal, the carbocyclic ring sealing that a side of second level end face seal is provided with constitutes;
First order end face seal is made of rotating ring A3, stationary ring A5, spring seat A8, throw-out collar A6, spring A4 and rotating seat 9; Rotating ring A3 is embedded in the axle sleeve 2[shape groove, annular rotating seat 9 internal diameters and axle sleeve 2 external diameters are complementary, be enclosed within on the axle sleeve 2, one end contacts with rotating ring A3 end face, the other end be one " shape structure; stationary ring A5, throw-out collar A6, spring A4 and spring seat A8 are successively set in the space that rotating ring A3 and rotating seat 9 form, and spring seat A8 is fixed on the rotating seat;
Second level end face seal is by rotating ring B12, stationary ring B13, spring seat B16, throw-out collar B15, spring B 7 and clamping sleeve 14 constitute, clamping sleeve 14 internal diameters and axle sleeve 2 external diameters are complementary, be enclosed within axle sleeve 2 outer and with axle sleeve 2 relative fixed, clamping sleeve 14 1 end outer walls and rotating seat 9 " the shape structure constitute [the shape groove; rotating ring B be embedded in [in the shape groove, be followed successively by stationary ring B13, throw-out collar B15, spring B 7 and spring seat B16, spring seat B16 is fixed on the spring seat A8 by attachment screw 10;
The carbocyclic ring sealing is made of carbon gland 17, carbocyclic ring back-up ring 18, carbocyclic ring seat 19, carbocyclic ring 20 and carbocyclic ring extension spring 21; Carbon gland 17 is fixed on the carbocyclic ring seat 19, and carbocyclic ring seat 19 is fixed on the spring seat B16, and carbocyclic ring back-up ring 18, carbocyclic ring 20 and carbocyclic ring extension spring 21 are arranged between carbon gland 17 and the carbocyclic ring seat 19;
Be provided with stop pin A22 and stop pin B23 in the carbocyclic ring sealing;
Spring seat B16 is provided with stop pin C24 near the position of throw-out collar B15;
The adjacent position of stationary ring A5 of the outer wall of axle sleeve 2 and first order end face seal is provided with driving pin 25;
Rotating ring A3 and rotating ring B12 end faces of both sides are provided with circular-arc " scholar " font fluid dynamic pressure groove in turning.
High pressure dry gas seals material is selected: the intensity of friction pair material must satisfy high compressive load, and material is reliable, and reliable performance satisfies long-term operation.Under high pressure, high rotating speed, adopt pressureless sintering SiC to make rotating ring, adopt import to soak antimony heavy duty graphite and make stationary ring, in hypervelocity, overvoltage test, all can satisfy usage requirement.
Auxiliary seal ring is selected: under high pressure, auxiliary seal ring requires to have good sealing and reliability.Under the high pressure rapidly release be the test that must carry out, seal ring is prevented that the release explosion from having proposed requirements at the higher level.Auxiliary seal ring must be selected the special spring-actuated outer ring structure form of covering macromolecular material of import; The outer covering layer material selects to have enough hardness and intensity, the modification filled polytetrafluoroethylene material of good resisting temperature croop property.
Claims (1)
1. high pressure compressor dry gas seals, it is characterized in that: be the axle sleeve that rotates by with rotating shaft, the tandem dry gas sealing structure that first order end face seal and second level end face seal connect to form, the labyrinth seal that is provided with between first order end face seal and the second level end face seal, the carbocyclic ring sealing that a side of second level end face seal is provided with constitutes;
Sleeve diameter and rotating shaft external diameter are complementary, and are enclosed within the rotating shaft, and an end and rotating shaft are fixing also can rotate with rotating shaft, and the other end end face is an outstanding and [shape groove vertical with the rotating shaft diameter;
First order end face seal is made of rotating ring A, stationary ring A, spring seat A, throw-out collar A, spring A, spring seat A and rotating seat; Rotating ring A is embedded in axle sleeve [in the shape groove, annular rotating ring cover for seat internal diameter and axle sleeve external diameter are complementary, be enclosed within on the axle sleeve, one end contacts with rotating ring A end face, the other end constitute one " shape structure; stationary ring A, throw-out collar A, spring A and spring seat A are successively set in the space that rotating ring A and rotating ring cover for seat form, and spring seat A is fixed on the rotating seat;
Second level end face seal is by rotating ring B, stationary ring B, spring seat B, throw-out collar B, spring B and clamping sleeve constitute, clamping sleeve internal diameter and axle sleeve external diameter are complementary, be enclosed within axle sleeve outer and with the axle sleeve relative fixed, clamping sleeve one end outer wall and rotating ring cover for seat " the shape structure constitute [the shape groove; rotating ring B be embedded in [in the shape groove, be followed successively by stationary ring B, throw-out collar B, spring B and spring seat B, spring seat B is fixed on the spring seat A by attachment screw;
Labyrinth seal is arranged at spring seat A, spring seat B and rotating seat three's jointing place;
The carbocyclic ring sealing is made of carbon gland, carbocyclic ring back-up ring, carbocyclic ring seat, carbocyclic ring and carbocyclic ring extension spring; Carbon gland is fixed on the carbocyclic ring seat, and the carbocyclic ring seat is fixed on the spring seat B, and carbocyclic ring back-up ring, carbocyclic ring and carbocyclic ring extension spring are arranged between carbon gland and the carbocyclic ring seat;
Be provided with stop pin A and stop pin B in the carbocyclic ring sealing;
Spring seat B is provided with stop pin C near the position of throw-out collar B;
The adjacent position of stationary ring A of the outer wall of axle sleeve and first order end face seal is provided with driving pin;
Rotating ring A and rotating ring B end faces of both sides are provided with circular-arc " scholar " font fluid dynamic pressure groove in turning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201259523U CN201621091U (en) | 2010-03-05 | 2010-03-05 | High-pressure compressor dry gas seal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201259523U CN201621091U (en) | 2010-03-05 | 2010-03-05 | High-pressure compressor dry gas seal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201621091U true CN201621091U (en) | 2010-11-03 |
Family
ID=43024546
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201259523U Expired - Lifetime CN201621091U (en) | 2010-03-05 | 2010-03-05 | High-pressure compressor dry gas seal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201621091U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829183A (en) * | 2012-08-13 | 2012-12-19 | 陕西长岭电子科技有限责任公司 | Large-diameter high-pressure mechanical sealing device |
| 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 |
| CN106015571A (en) * | 2016-06-20 | 2016-10-12 | 昆明理工大学 | Mechanical seal ring with maple-leaf-like grooves |
-
2010
- 2010-03-05 CN CN2010201259523U patent/CN201621091U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829183A (en) * | 2012-08-13 | 2012-12-19 | 陕西长岭电子科技有限责任公司 | Large-diameter high-pressure mechanical sealing device |
| 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 |
| CN106015571A (en) * | 2016-06-20 | 2016-10-12 | 昆明理工大学 | Mechanical seal ring with maple-leaf-like grooves |
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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: 20101103 |
|
| CX01 | Expiry of patent term |