CN208089615U - A kind of novel dry gas sealing structure - Google Patents
A kind of novel dry gas sealing structure Download PDFInfo
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- CN208089615U CN208089615U CN201820480722.5U CN201820480722U CN208089615U CN 208089615 U CN208089615 U CN 208089615U CN 201820480722 U CN201820480722 U CN 201820480722U CN 208089615 U CN208089615 U CN 208089615U
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- stationary
- spring
- dry gas
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Abstract
The utility model is related to sealing device fields, a kind of novel dry gas sealing structure can be used for chemical industry or oil, the fields such as petrochemical industry and metallurgy large size running device, rotating speed is more than 20000rpm, dry gas seals rotary part linear velocity is more than the dynamic equipment of 130m/s, including primary seal system, auxiliary seal system and single unit system, the primary seal system is arranged in auxiliary seal system left end, the single unit system is arranged in primary seal system left end, primary seal system connects bolt 8 by a two level stationary seat with the stationary seat of auxiliary seal system and is attached, form the whole stationary seat of dry gas seals, dry gas seals blanket gas system is by drive bolt, gas entrance is isolated, blanket gas entrance, blanket gas exports and primary seal gas entrance composition, form air film, ensure dynamic and static ring gas lubrication, meet normal operation.
Description
Technical field
The utility model is related to sealing device field, especially a kind of novel dry gas sealing structure.
Background technology
Dry gas seals are a kind of gas lubrication non-contact mechanical seals.The flatness at rotating ring and stationary ring coating surface
It is very high with finish, there is a series of dynamic pressure groove on rotating ring coating surface.With rotation, gas is inwardly pumped into dynamic pressure groove
Root, the slotless area other than root are known as seals dam.Seals dam increases air film pressure to gas stream movable property life prevention, inhibiting effect
Power.Pressure between coating surface makes stationary ring surface be detached from rotating ring, keeps the gap of a very little, generally 2~3 microns of left sides
It is right.At home in unit, because of the selection of material, the variation of rotatable parts phase at high speed, general dry gas seals are applied to
Rotating speed is less than 20000rpm, and dry gas seals rotary part linear velocity is less than the dynamic equipment of 130m/s.Torque knot is transmitted by change
Configuration formula, can effectively avoid dry gas seals, phase changes at high speed, causes dynamic and static ring to contact, dry grinds, finally
Damage equipment.
Utility model content
The technical problems to be solved in the utility model is：In order to avoid phase changes dry gas seals at high speed,
Causing dynamic and static ring to contact, dry grind, finally damages equipment, the utility model provides a kind of novel dry gas sealing structure,
In carrying out torque transmission from dry gas seals both sides, it is ensured that dry gas seals can avoid phase hair under high speed when normal operation
Changing causes dynamic and static ring to be in direct contact, and can meet normal operation.
In order to install the accuracy of dry gas seals position, the utility model provides a kind of novel dry gas sealing structure, carbon
One end of ring sealing is equipped with positioning plate, and the two realizes detachable connection by screw, and the positioning plate is in sealing after installation is complete
It removes.
For the fiting effect of each component of dry gas seals, the utility model provides a kind of novel dry gas sealing structure, moves
Trundle is equipped between ring seat and sealing shroud, between level-one stationary ring and level-one spring base, between two level stationary ring and two-level spring seat
It is equipped with level-one stationary ring stop pin, is all provided between the end face of level-one rotating ring and the end face and rotating seat that seal inner room, two level rotating ring
There is level-one moving ring assembly, back-shaped circle is equipped between the inner wall and sealing shroud of level-one rotating ring.
In order to further increase the degree and stability of seal face air film, it is airtight that the utility model provides a kind of novel dry
The end face of seal structure, level-one rotating ring and two level rotating ring both sides is equipped with " scholar " font fluid dynamic pressure groove.Level-one rotating ring and two level are dynamic
Ring is all made of silicon carbide, and level-one stationary ring and two level stationary ring are all made of leaching antimony heavy duty graphite, and level-one moving ring assembly and back-shaped circle are adopted
With spring-actuated overcoating high molecular material.
Technical solution adopted by the utility model to solve its technical problems is：A kind of novel dry gas sealing structure, including
Primary seal system, auxiliary seal system and single unit system, the primary seal system is arranged on the left of auxiliary seal system, described whole
Body device is arranged on the left of primary seal system；
The single unit system includes that the pump housing, pump housing connection bolt, connection bolt and impeller, the pump housing connect mounted on the pump housing
Above connecting bolt, the pump housing connection bolt is mounted on above connection bolt, and the connection bolt is mounted on above impeller, described
Impeller is fixedly connected by the connecting pin across mounting hole with sealing shroud；
The primary seal system includes level-one moving ring assembly, level-one rotating ring, level-one stationary ring, level-one stationary ring stop pin, level-one
Throw-out collar, level-one spring, back-shaped circle, sealing shroud, trundle, expansion joint, mounting hole, primary seal gas entrance, a two level stationary seat connect
Connecting bolt, connecting pin and level-one spring base, the right side and level-one rotating ring left side of the level-one moving ring assembly are fixedly connected, and described one
There is fine crack among grade rotating ring and level-one stationary ring, is fixedly connected on the left of the right side of the level-one stationary ring and level-one throw-out collar, the level-one
The vertical of stationary ring stop pin is fixed on above level-one stationary ring, and the right side of the level-one throw-out collar is fixed with one end of level-one spring to be connected
It connects, the level-one spring other end is mounted on the left of level-one spring base, and the back-shaped circle is mounted below level-one rotating ring, the biography
Dynamic pin embedding sealing set lower section, the expansion joint are mounted on the right side of trundle, and the primary seal gas entrance is vertically installed at level-one
Above stationary ring stop pin；
The auxiliary seal system includes two level moving ring assembly, two level rotating ring, two level stationary ring, two level stationary ring stop pin, two
Grade throw-out collar, two-level spring, labyrinth seal, rotating seat, carbon gland, carbocyclic ring, three-level spring, pressing sleeve, drive bolt, positioning pin,
Axis, isolation gas entrance, blanket gas entrance, blanket gas outlet, two-level spring seat and positioning plate, the right side of the two level moving ring assembly
Be fixedly connected on the left of two level rotating ring, have fine crack among the two level rotating ring and two level stationary ring, the right side of the two level stationary ring and
It is fixedly connected on the left of two level throw-out collar, the two level stationary ring stop pin is fixed on vertically above two level stationary ring, the two level throw-out collar
Right side is fixedly connected with one end of two-level spring, and the two-level spring other end is mounted on the left of two-level spring seat, the broach
It is fixedly connected on the left of sealing and two level stationary ring stop pin, the rotating seat is fixedly connected with two level moving ring assembly, the carbocyclic ring pressure
Lid is fixedly connected with three-level spring one end, and the carbocyclic ring is fixedly connected with the three-level spring other end, the positioning pin insertion axis
Right side, the isolation gas entrance are vertically installed above carbocyclic ring, and the blanket gas entrance is vertically installed above two level throw-out collar, institute
Blanket gas outlet is stated to be vertically installed above labyrinth seal；
The primary seal system connects bolt by a two level stationary seat with the stationary seat of auxiliary seal system and is attached,
Form the whole stationary seat of dry gas seals；
A kind of novel dry gas sealing structure positioning is positioned using sealing shroud and expansion joint with axis, and the dry gas seals are right
Side is positioned using positioning pin；
The sealing shroud is mounted below overall structure, is sealed to overall structure；
The pressing sleeve is attached with sealing shroud by drive bolt.
Specifically, the sealing shroud has screw thread with drive bolt interface.
Specifically, a diameter of 5mm of the mounting hole.
Further, the level-one rotating ring and the end face of two level rotating ring both sides are equipped with " scholar " font fluid dynamic pressure groove.
Specifically, the level-one rotating ring is in two level rotating ring on same axis, at the level-one stationary ring and two level stationary ring
In on same axis.
Further, the axis is hollow cylinder.
The utility model, which provides, provides a kind of novel dry gas sealing structure, is to carry out torque biography from dry gas seals both sides
It passs, it is ensured that under high speed when normal operation, avoidable phase changes and dynamic and static ring is caused to be in direct contact dry gas seals, can
Meet normal operation.
The utility model, which provides, provides a kind of novel dry gas sealing structure, and one end of carbon ring seal is equipped with positioning plate, and two
Person realizes that detachable connection, the positioning plate are removed in sealing after installation is complete by screw.
The utility model, which provides, provides a kind of novel dry gas sealing structure, and transmission is equipped between rotating seat and sealing shroud
Pin, between level-one stationary ring and level-one spring base, is equipped with level-one stationary ring stop pin, level-one between two level stationary ring and two-level spring seat
It is equipped with level-one moving ring assembly between the end face of rotating ring and the end face and rotating seat that seal inner room, two level rotating ring, level-one rotating ring
Back-shaped circle is equipped between inner wall and sealing shroud.
The utility model, which provides, provides a kind of novel dry gas sealing structure, the end face of level-one rotating ring and two level rotating ring both sides
It is equipped with " scholar " font fluid dynamic pressure groove.Level-one rotating ring and two level rotating ring are all made of silicon carbide, and level-one stationary ring and two level stationary ring are equal
Using leaching antimony heavy duty graphite, level-one moving ring assembly and back-shaped circle are all made of spring-actuated overcoating high molecular material.
Description of the drawings
With reference to the accompanying drawings and examples to the utility model into two step explanations.
Fig. 1 is a kind of novel dry gas sealing structure schematic diagram of the utility model；
Fig. 2 is a kind of primary seal system structure diagram of novel dry gas sealing structure of the utility model；
Fig. 3 is a kind of auxiliary seal system structure diagram of novel dry gas sealing structure of the utility model.
In figure：1. primary seal system；2. auxiliary seal system；3. the pump housing；4. the pump housing connects bolt；5. connecting bolt；6.
Impeller；11. level-one moving ring assembly；12. level-one rotating ring；13. level-one stationary ring；14. level-one stationary ring stop pin；15. level-one throw-out collar；
16. level-one spring；17. back-shaped circle；18. sealing shroud；19. trundle；110. expansion joint；111. mounting hole；112. primary seal gas
Entrance；113. a two level stationary seat connects bolt；114. connecting pin；115. level-one spring base；21. two level moving ring assembly；22. two
Grade rotating ring；23. two level stationary ring；24. two level stationary ring stop pin；25. two level throw-out collar；26. two-level spring；27. labyrinth seal；28.
Rotating seat；29. carbon gland；210. carbocyclic ring；211. three-level springs；212. pressing sleeve；213. drive bolt；214. positioning pin；
215. axis；216. isolation gas entrances；217. blanket gas entrances；218. blanket gas export；219. two-level spring seats；220. positioning
Plate.
Specific implementation mode
The utility model is described in further detail presently in connection with attached drawing.These attached drawings are simplified schematic diagram,
Only illustrate the basic structure of the utility model in a schematic way, therefore it only shows composition related with the utility model.
As shown in Figure 1, a kind of novel dry gas sealing structure, including primary seal system 1, auxiliary seal system 2 and whole dress
It sets, the setting of primary seal system 1 is in 2 left side of auxiliary seal system, and single unit system setting is in 1 left side of primary seal system, single unit system
Including the pump housing 3, pump housing connection bolt 4, connection bolt 5 and impeller 6, the pump housing 3 is mounted on 4 top of pump housing connection bolt, and the pump housing connects
Connecting bolt 4 is mounted on 5 top of connection bolt, and connection bolt 5 is mounted on 6 top of impeller, and impeller 6 passes through across mounting hole 111
Connecting pin 114 is fixedly connected with sealing shroud 18；Primary seal system 1 includes level-one moving ring assembly 11, level-one rotating ring 12, level-one stationary ring
13, level-one stationary ring stop pin 14, level-one throw-out collar 15, level-one spring 16, back-shaped circle 17, sealing shroud 18, trundle 19, expansion joint
110, mounting hole 111, primary seal gas entrance 112, two level stationary seat connection bolt 113, connecting pin 114 and level-one spring base
115, the right side of level-one moving ring assembly 11 is fixedly connected with 12 left side of level-one rotating ring, is had among level-one rotating ring 12 and level-one stationary ring 13
The right side of fine crack, level-one stationary ring 13 is fixedly connected with 15 left side of level-one throw-out collar, and the vertical of level-one stationary ring stop pin 14 is fixed on one
13 top of grade stationary ring, the right side of level-one throw-out collar 15 are fixedly connected with one end of level-one spring 16, the installation of 16 other end of level-one spring
In 115 left side of level-one spring base, back-shaped circle 17 is mounted on 12 lower section of level-one rotating ring, and 19 embedding sealing of trundle set, 18 lower section is swollen
Swollen section 110 is mounted on 19 right side of trundle, and primary seal gas entrance 112 is vertically installed at 14 top of level-one stationary ring stop pin；Auxiliary
Sealing system 2 includes two level moving ring assembly 21, two level rotating ring 22, two level stationary ring 23, two level stationary ring stop pin 24, two level throw-out collar
25, two-level spring 26, labyrinth seal 27, rotating seat 28, carbon gland 29, carbocyclic ring 210, three-level spring 211, pressing sleeve 212, transmission
Bolt 213, positioning pin 214, axis 215, isolation gas entrance 216, blanket gas entrance 217, blanket gas outlet 218, two-level spring seat
219 and positioning plate 220, the right side and 22 left side of two level rotating ring of two level moving ring assembly 21 are fixedly connected, two level rotating ring 22 and two level
There are fine crack, the right side of two level stationary ring 23 to be fixedly connected with 25 left side of two level throw-out collar among stationary ring 23, two level stationary ring stop pin 24 is perpendicular
Straight to be fixed on 23 top of two level stationary ring, the right side of two level throw-out collar 25 is fixedly connected with one end of two-level spring 26, two-level spring 26
The other end is mounted on 219 left side of two-level spring seat, and labyrinth seal 27 is fixedly connected with 24 left side of two level stationary ring stop pin, rotating seat
28 are fixedly connected with two level moving ring assembly 21, and carbon gland 29 is fixedly connected with 211 one end of three-level spring, carbocyclic ring 210 and three-level
211 other end of spring is fixedly connected, and positioning pin 214 is embedded in the right side of axis 215, and isolation gas entrance 216 is vertically installed at carbocyclic ring 210
Top, blanket gas entrance 217 are vertically installed at 25 top of two level throw-out collar, and blanket gas outlet 218 is vertically installed at labyrinth seal 27
Top；Primary seal system 1 connects bolt 113 by a two level stationary seat with the stationary seat of auxiliary seal system 2 and is attached, shape
At the whole stationary seat of dry gas seals；A kind of novel dry gas sealing structure positioning is using sealing shroud 18 and expansion joint 110 and axis 215
Positioning, dry gas seals right side are positioned using positioning pin 214；Sealing shroud 18 is mounted below overall structure, to overall structure
It seals；Pressing sleeve 212 is attached with sealing shroud 18 by drive bolt 213.
Preferably, sealing shroud 18 has screw thread with 213 interface of drive bolt.
Preferably, 111 a diameter of 5mm of mounting hole.
Wherein level-one rotating ring 12 and the end face of 22 both sides of two level rotating ring is equipped with " scholar " font fluid dynamic pressure groove.
The wherein described level-one rotating ring 12 is in two level rotating ring 22 on same axis, at level-one stationary ring 13 and two level stationary ring 23
In on same axis.
Preferably, axis 215 is hollow cylinder.
When work, primary seal system 1 connects bolt 113 with the stationary seat of auxiliary seal system 2 by a two level stationary seat
It is attached, forms the whole stationary seat of dry gas seals；Dry gas seals blanket gas system is by drive bolt 213, isolation gas entrance
216, blanket gas entrance 217, blanket gas outlet 218 and primary seal gas entrance 112 form, and form air film, ensure dynamic and static ring gas
Lubrication meets normal operation, and positioning processes expansion joint 110 using sealing shroud, positions with axis 215, is adopted on the right side of dry gas seals
It is positioned with positioning pin 214, and torque is carried out by positioning pin 214 and passes to pressing sleeve 212, pressing sleeve 212 is logical with sealing shroud 18
It crosses drive bolt 213 and is attached and transmits torque, at the same time, the end face of sealing shroud is radially square in the dry gas seals other side
To processing bolt hole, impeller 6 carries out accessory processing bolt hole with sealing shroud 18, carries out torque by connecting pin 114 therebetween
It transmits, to make whole set steady, quick, Effec-tive Function.
It is enlightenment, through the above description, related work people with the above-mentioned desirable embodiment according to the utility model
Member can carry out various changes and amendments in the range of without departing from this item utility model technological thought completely.This item is real
It is not limited to the contents of the specification with novel technical scope, it is necessary to which its technology is determined according to right
Property range.
Claims (6)
1. a kind of novel dry gas sealing structure, including primary seal system (1), auxiliary seal system (2) and single unit system, the master
On the left of auxiliary seal system (2), the single unit system setting is special on the left of primary seal system (1) for sealing system (1) setting
Sign is:
The single unit system includes the pump housing (3), pump housing connection bolt (4), connection bolt (5) and impeller (6), the pump housing (3)
Above pump housing connection bolt (4), the pump housing connection bolt (4) is mounted on above connection bolt (5), the connection spiral shell
Bolt (5) is mounted on above impeller (6), and the impeller (6) is by passing through the connecting pin (114) and sealing shroud of mounting hole (111)
(18) it is fixedly connected；
The primary seal system (1) includes level-one moving ring assembly (11), level-one rotating ring (12), level-one stationary ring (13), level-one stationary ring
Stop pin (14), level-one throw-out collar (15), level-one spring (16), back-shaped circle (17), sealing shroud (18), trundle (19), expansion joint
(110), mounting hole (111), primary seal gas entrance (112), two level stationary seat connection bolt (113), connecting pin (114) and one
Grade spring base (115), the right side of the level-one moving ring assembly (11) and level-one rotating ring (12) left side are fixedly connected, and the level-one is dynamic
There are fine crack, the right side of the level-one stationary ring (13) to connect with fixed on the left of level-one throw-out collar (15) among ring (12) and level-one stationary ring (13)
It connects, the vertical of the level-one stationary ring stop pin (14) is fixed on above level-one stationary ring (13), the right side of the level-one throw-out collar (15)
It being fixedly connected with one end of level-one spring (16), level-one spring (16) other end is mounted on the left of level-one spring base (115),
The back-shaped circle (17) is mounted below level-one rotating ring (12), described swollen below trundle (19) the embedding sealing set (18)
Swollen section (110) is mounted on the right side of trundle (19), and the primary seal gas entrance (112) is vertically installed at level-one stationary ring stop pin
(14) top；
The auxiliary seal system (2) includes that two level moving ring assembly (21), two level rotating ring (22), two level stationary ring (23), two level are quiet
Ring stop pin (24), two level throw-out collar (25), two-level spring (26), labyrinth seal (27), rotating seat (28), carbon gland (29),
Carbocyclic ring (210), three-level spring (211), pressing sleeve (212), drive bolt (213), positioning pin (214), axis (215), isolation gas enter
Mouth (216), blanket gas entrance (217), blanket gas outlet (218), two-level spring seat (219) and positioning plate (220), the two level
It is fixedly connected on the left of the right side of moving ring assembly (21) and two level rotating ring (22), in the two level rotating ring (22) and two level stationary ring (23)
Between have a fine crack, be fixedly connected on the left of the right side of the two level stationary ring (23) and two level throw-out collar (25), the two level stationary ring stop pin
(24) vertical to be fixed on above two level stationary ring (23), the right side and one end of two-level spring (26) of the two level throw-out collar (25) are fixed
Connection, two-level spring (26) other end are mounted on the left of two-level spring seat (219), and the labyrinth seal (27) and two level are quiet
It is fixedly connected on the left of ring stop pin (24), the rotating seat (28) is fixedly connected with two level moving ring assembly (21), the carbocyclic ring pressure
Lid (29) is fixedly connected with three-level spring (211) one end, and the carbocyclic ring (210) is fixedly connected with three-level spring (211) other end,
The right side of the embedded axis (215) of the positioning pin (214), the isolation gas entrance (216) are vertically installed above carbocyclic ring (210),
The blanket gas entrance (217) is vertically installed above two level throw-out collar (25), and the blanket gas outlet (218) is vertically installed at comb
Tooth seals above (27)；
The primary seal system (1) and the stationary seat of auxiliary seal system (2) by a two level stationary seat connect bolt (113) into
Row connection, forms the whole stationary seat of dry gas seals；
A kind of novel dry gas sealing structure positioning is positioned using sealing shroud (18) and expansion joint (110) with axis (215), described
It is positioned using positioning pin (214) on the right side of dry gas seals；
The sealing shroud (18) is mounted below overall structure, seals to overall structure；
The pressing sleeve (212) is attached with sealing shroud (18) by drive bolt (213).
2. a kind of novel dry gas sealing structure as described in claim 1, it is characterised in that：The sealing shroud (18) and transmission spiral shell
Bolt (213) interface has screw thread.
3. a kind of novel dry gas sealing structure as described in claim 1, it is characterised in that：The mounting hole (111) is a diameter of
5mm。
4. a kind of novel dry gas sealing structure as described in claim 1, it is characterised in that：The level-one rotating ring (12) and two level
The end face of rotating ring (22) both sides is equipped with " scholar " font fluid dynamic pressure groove.
5. a kind of novel dry gas sealing structure as described in claim 1, it is characterised in that：The level-one rotating ring (12) and two level
Rotating ring (22) is on same axis, and the level-one stationary ring (13) is in two level stationary ring (23) on same axis.
6. a kind of novel dry gas sealing structure as described in claim 1, it is characterised in that：The axis (215) is hollow cylinder
Body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820480722.5U CN208089615U (en) | 2018-04-04 | 2018-04-04 | A kind of novel dry gas sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820480722.5U CN208089615U (en) | 2018-04-04 | 2018-04-04 | A kind of novel dry gas sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208089615U true CN208089615U (en) | 2018-11-13 |
Family
ID=64058272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820480722.5U Active CN208089615U (en) | 2018-04-04 | 2018-04-04 | A kind of novel dry gas sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208089615U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117469370A (en) * | 2023-12-27 | 2024-01-30 | 中国核动力研究设计院 | Dry gas sealing device free of isolation gas |
-
2018
- 2018-04-04 CN CN201820480722.5U patent/CN208089615U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117469370A (en) * | 2023-12-27 | 2024-01-30 | 中国核动力研究设计院 | Dry gas sealing device free of isolation gas |
| CN117469370B (en) * | 2023-12-27 | 2024-03-08 | 中国核动力研究设计院 | Dry gas sealing device free of isolation gas |
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