CN202266676U - Pump corrugated pipe dry gas seal device - Google Patents
Pump corrugated pipe dry gas seal device Download PDFInfo
- Publication number
- CN202266676U CN202266676U CN2011203831460U CN201120383146U CN202266676U CN 202266676 U CN202266676 U CN 202266676U CN 2011203831460 U CN2011203831460 U CN 2011203831460U CN 201120383146 U CN201120383146 U CN 201120383146U CN 202266676 U CN202266676 U CN 202266676U
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- CN
- China
- Prior art keywords
- ring
- bellows
- corrugated pipe
- stationary ring
- dry gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a pump corrugated pipe dry gas seal device. The device comprises a compensation structure and a non-compensation structure; the compensation structure consists of a welding corrugated pipe assembly, a foundation O-shaped ring (4), and a moving ring (5); the welding corrugated pipe assembly comprises a foundation (1), a corrugated pipe (2), and a ring seat (3); one end of the corrugated pipe (2) is welded with the foundation (1), and the other end of the corrugated pipe (2) is welded with the ring seat (3); the moving ring (5) is arranged in the ring seat (3) and the moving ring (5) and the welding corrugated pipe assembly form radial sealing through the O-shaped ring (4); the non-compensation structure comprises a static ring (6), and a static ring O-shaped ring (7); the static ring (6) and the static ring O-shaped ring (7) form radial sealing through a flange; and the static ring (6) is in tight fit with the moving ring (5) to form a friction pair. The utility model solves the technical problems of inconvenience in installation, and poor sealing property caused by easy loss of elasticity in the prior art.
Description
Technical field
The utility model relates to Sealing used for pump, relates in particular to pump and uses the bellows dry gas sealing device.
Background technique
Dry gas seals is a kind of means that realize sealing with sealing gland liquid or with sealing gland gas.At present, pump has been widely used in fields such as oil, chemical industry with dry gas seals, generally adopt spring as the elasticity original paper in the pump structure, and its shortcoming is that inconvenience is installed, and is prone to lose bullet, causes poor sealing performance.
The model utility content
The purpose of the utility model is to provide a kind of pump to use the bellows dry gas sealing device, and it has solved installs inconvenience in the background technique, be prone to lose bullet, causes the technical problem of poor sealing performance.
A kind of pump is adorned with the bellows dry gas seals: comprise collocation structure and non-collocation structure; Described collocation structure is made up of welded bellows assembly, pedestal O shape circle 4 and rotating ring 5; Said welded bellows assembly comprises pedestal 1, bellows 2, ring seat 3; Described bellows 2 one ends and pedestal 1 welding, the other end and 3 welding of ring seat; Said rotating ring 5 is installed in the ring seat 3, and forms radial seal with the welded bellows assembly through pedestal O shape circle 4; Said non-collocation structure comprises stationary ring 6 and stationary ring O shape circle 7, and said stationary ring 6 forms radial seal with stationary ring O shape circle 7 through flange, and said stationary ring 6 fits tightly with rotating ring 5, constitutes friction pair.The shape of said bellows is one and radially has the ripple that can gain in strength and the tubular elastomer that axial each wave soldering connects, and can be AM350 bellows, Ha Shi C bellows, because of chromium nickel 718 bellowss, titanium alloy corrugated pipe or alloy 20 bellowss.
Above-mentioned rotating ring 5 is the graphite rotating ring, and stationary ring 6 is silicon carbide stationary ring or cemented carbide stationary ring,
Above-mentioned stationary ring 6 end faces have 2～10 μ m shallow slots.When collocation structure rotates, produce hydrodynamic pressure, rotating ring 5 and stationary ring 6 are thrown off, form the air film about 3 μ m, realize sealing.
The beneficial effect of the utility model:
The utility model adopts bellows as the elasticity original paper, and it is even that its peripheral-elastic can reach circumference.Traditional is spring sealed, no matter number of springs what, be all that some is stressed, be not that end face is evenly stressed, promptly abrasive end face is formed the wave stretch compensation, influence the end face discontinuity equalization.So overcome the installation inconvenience that conventional springs type dry gas seals exists, spring loses the problem that plays poor sealing performance.
Description of drawings
Fig. 1 is that pump is with bellows dry gas sealing device longitudinal sectional drawing;
Fig. 2 is that pump is with bellows dry gas sealing device stationary ring end face flute profile figure.
1-pedestal, 2-bellows, 3-encircle seat, 4-pedestal O shape circle, 5 rotating rings, 6-stationary ring, 7-stationary ring O shape circle
Embodiment
Describe the utility model embodiment in detail below in conjunction with accompanying drawing:
Referring to Fig. 1; A kind of pump is adorned with the bellows dry gas seals: comprise collocation structure and non-collocation structure; Described collocation structure is made up of welded bellows assembly, pedestal O shape circle 4 and rotating ring 5; Said welded bellows assembly comprises pedestal 1, bellows 2, ring seat 3, described bellows 2 one ends and pedestal 1 welding, the other end and 3 welding of ring seat; Said rotating ring 5 is installed in the ring seat 3, and forms radial seal with the welded bellows assembly through pedestal O shape circle 4; Said rotating ring 5 is the graphite rotating ring, and said non-collocation structure comprises stationary ring 6 and stationary ring O shape circle 7, and said stationary ring 6 forms radial seal with stationary ring O shape circle 7 through flange, and said stationary ring 6 fits tightly with rotating ring 5, constitutes friction pair.Stationary ring 6 is silicon carbide stationary ring or cemented carbide stationary ring.Stationary ring 6 end faces have 2～10 μ m shallow slots.When collocation structure rotates, produce hydrodynamic pressure, rotating ring 5 and stationary ring 6 are thrown off, form the air film about 3 μ m, realize sealing.The shape of said bellows is one and radially has the ripple that can gain in strength and the tubular elastomer that axial each wave soldering connects, and can make AM350 bellows, Ha Shi C bellows, because of chromium nickel 718 bellowss, titanium alloy corrugated pipe, alloy 20 bellowss.
Referring to Fig. 2, the end face of stationary ring 6 is carved with the dark flute profile of 2～10 μ m, when collocation structure rotates, produces hydrodynamic pressure, and rotating ring 5 and stationary ring 6 are thrown off, and forms the air film about 3 μ m, realizes sealing.
It is material that the rotating ring 5 of present embodiment adopts graphite, has the good advantage of self lubricity; Stationary ring 6 adopts SiC or cemented carbide, has that thermal conductivity is good, the high nonabradable characteristics of hardness.Wear resistance can prolong the working life of sealing.
Claims (4)
1. a pump is used the bellows dry gas sealing device: it is characterized in that; Comprise collocation structure and non-collocation structure; Described collocation structure is made up of welded bellows assembly, pedestal O shape circle (4) and rotating ring (5); Said welded bellows assembly comprises pedestal (1), bellows (2), ring seat (3), described bellows (2) one ends and pedestal (1) welding, the other end and ring seat (3) welding; Said rotating ring (5) is installed in the ring seat (3), and forms radial seal with the welded bellows assembly through pedestal O shape circle (4); Said non-collocation structure comprises stationary ring (6) and stationary ring O shape circle (7), and said stationary ring (6) forms radial seal with stationary ring O shape circle (7) through flange, and said stationary ring (6) and rotating ring (5) fit tightly, and constitute friction pair.
2. pump according to claim 1 is used the bellows dry gas sealing device, it is characterized in that, said rotating ring (5) is the graphite rotating ring, and stationary ring (6) is silicon carbide stationary ring or cemented carbide stationary ring.
3. pump according to claim 1 and 2 is used the bellows dry gas sealing device, it is characterized in that, said stationary ring (6) end face has 2～10 μ m shallow slots.
4. pump according to claim 3 is used the bellows dry gas sealing device, it is characterized in that, said bellows is AM350 bellows, Ha Shi C bellows, because of chromium nickel 718 bellowss, titanium alloy corrugated pipe or alloy 20 bellowss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203831460U CN202266676U (en) | 2011-10-10 | 2011-10-10 | Pump corrugated pipe dry gas seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203831460U CN202266676U (en) | 2011-10-10 | 2011-10-10 | Pump corrugated pipe dry gas seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202266676U true CN202266676U (en) | 2012-06-06 |
Family
ID=46157473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203831460U Expired - Fee Related CN202266676U (en) | 2011-10-10 | 2011-10-10 | Pump corrugated pipe dry gas seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202266676U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696518A (en) * | 2013-12-04 | 2015-06-10 | 丹东波纹管密封有限公司 | Simple welded metal-bellows mechanical seal |
| CN105090518A (en) * | 2015-09-14 | 2015-11-25 | 成都赛乐化新机电有限公司 | Corrugated pipe type dry gas seal device and seal method |
-
2011
- 2011-10-10 CN CN2011203831460U patent/CN202266676U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696518A (en) * | 2013-12-04 | 2015-06-10 | 丹东波纹管密封有限公司 | Simple welded metal-bellows mechanical seal |
| CN105090518A (en) * | 2015-09-14 | 2015-11-25 | 成都赛乐化新机电有限公司 | Corrugated pipe type dry gas seal device and seal method |
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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: 20120606 Termination date: 20161010 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |