CN204420125U - A kind of boiler accessory machinery bearing housing inflatable seal device - Google Patents
A kind of boiler accessory machinery bearing housing inflatable seal device Download PDFInfo
- Publication number
- CN204420125U CN204420125U CN201420838368.0U CN201420838368U CN204420125U CN 204420125 U CN204420125 U CN 204420125U CN 201420838368 U CN201420838368 U CN 201420838368U CN 204420125 U CN204420125 U CN 204420125U
- Authority
- CN
- China
- Prior art keywords
- seal ring
- outer seal
- inlet hole
- air
- bearing housing
- 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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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The utility model discloses a kind of boiler accessory machinery bearing housing inflatable seal device, comprise cylinder body, gas supply part, below cylinder body, be fixed with outer seal ring, outer seal ring has inlet hole and air inlet duct; Inner seal ring and outer seal ring link together; The lower end of inner seal ring is inlaid with copper tooth diaphragm seal; Seal ring along the circumferential direction has multiple air-filled pore.Gas supply part is connected on the inlet hole of outer seal ring by pipeline.Inlet hole is positioned at the left side of outer seal ring; Air inlet duct is positioned at the inner side of inlet hole.Inner seal ring is positioned at below outer seal ring.The utility model is at seal ring top drilling, inflated in seal ring by external air source air feed, the size of this gas pressure can regulate, and within one week, defines " barrier shield " to stop that the oil smoke in case leaks outside like this under the effect of air-flow along rotor, its structure is simple, practical, good sealing effect.
Description
Technical field
The utility model relates to a kind of seal arrangement, particularly relates to a kind of boiler accessory machinery bearing housing inflatable seal device.
Background technique
The suction force of some boiler accessory machinery as induced draught fan produces due to epitrochanterian rotation blade in running is enough to the oil smoke in bearing housing to be drawn, and is accumulated into oil droplet, gets rid of and drain to outside under the effect of rotor centrifugal force.
Traditional encapsulating method: a kind of is the gap reducing seal ring and rotor, but the running orbit of rotor actual be elliptical shape, not with bearing and seal ring gear piece concentric; When opening, stopping process medium speed in critical speed of rotation time, rotor oscillation amplitude is maximum, the gear piece so the long axis direction of rotor elliptical orbit certainly will wear and tear, and makes gap become large; Another kind improves sealing configuration, increase sealing area; But under the effect of the blade suction force of High Rotation Speed, effectively can not solve oil in bearing housing to outward leakage.So a kind of new seal arrangement will be had thoroughly to solve the leakage problem of oil smoke in this kind of operating mode lower bearing housing.
Model utility content
In order to the deficiency in solving the problem, the utility model provides a kind of boiler accessory machinery bearing housing inflatable seal device.
For solving above technical problem, the technical solution adopted in the utility model is: a kind of boiler accessory machinery bearing housing inflatable seal device, comprises cylinder body, gas supply part, be fixed with outer seal ring below cylinder body, outer seal ring has inlet hole and air inlet duct; Inner seal ring and outer seal ring link together;
The lower end of inner seal ring is inlaid with copper tooth diaphragm seal; Seal ring along the circumferential direction has multiple air-filled pore.
Gas supply part is connected on the inlet hole of outer seal ring by pipeline.
Inlet hole is positioned at the left side of outer seal ring; Air inlet duct is positioned at the inner side of inlet hole.Inner seal ring is positioned at below outer seal ring.
The utility model is at seal ring top drilling, inflated in seal ring by external air source air feed, the size of this gas pressure can regulate, and within one week, defines " barrier shield " to stop that the oil smoke in case leaks outside like this under the effect of air-flow along rotor, its structure is simple, practical, good sealing effect.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of inner seal ring.
In figure: 1, cylinder body; 2, outer seal ring; 3, inner seal ring; 4, copper tooth diaphragm seal; 5, rotor; 6, gas supply part; 7, inlet hole; 8, air inlet duct; 9, air-filled pore.
Embodiment
As Figure 1-Figure 2, the utility model comprises cylinder body 1, outer seal ring 2, inner seal ring 3, copper tooth diaphragm seal 4, gas supply part 6, inlet hole 7, air inlet duct 8 and air-filled pore 9.
Be fixed with outer seal ring 2 below cylinder body 1, outer seal ring 2 have inlet hole 7 and air inlet duct 8; Inlet hole 7 is positioned at the left side of outer seal ring 2; The inner side of inlet hole 7 is air inlet duct 8.
Inner seal ring 3 and outer seal ring 2 link together, and inner seal ring 3 is positioned at below outer seal ring 2.The lower end of inner seal ring 3 is inlaid with copper tooth diaphragm seal 4, simultaneously inner seal ring 3 along the circumferential direction have multiple air-filled pore 9.
Gas supply part is made up of pipeline, compressed-air actuated compressor, stop valve, pressure gauge, safety valve; Gas supply part 6 is connected on the inlet hole 7 of outer seal ring 2 by pipeline, gas enters in the air-filled pore 9 of inner seal ring 3 by air inlet duct 8, such gas is just formed " barrier shield " of annular between copper tooth diaphragm seal 4 and rotor 5, stops that the oil smoke in bearing housing is revealed.Copper tooth diaphragm seal 4 also plays certain barrier effect simultaneously, and by the combination of above-mentioned each parts, the utility model serves good sealing effect.
Above-mentioned mode of execution is not to restriction of the present utility model; the utility model is also not limited in above-mentioned citing; the change that those skilled in the art make within the scope of the technical solution of the utility model, remodeling, interpolation or replacement, also all belong to protection domain of the present utility model.
Claims (4)
1. a boiler accessory machinery bearing housing inflatable seal device, comprises cylinder body, gas supply part, it is characterized in that: be fixed with outer seal ring (2) below described cylinder body (1), outer seal ring (2) has inlet hole (7) and air inlet duct (8); Described inner seal ring (3) and outer seal ring (2) link together;
The lower end of described inner seal ring (3) is inlaid with copper tooth diaphragm seal (4); Seal ring (3) along the circumferential direction has multiple air-filled pore (9).
2. boiler accessory machinery bearing housing inflatable seal device according to claim 1, is characterized in that: described gas supply part (6) is connected on the inlet hole (7) of outer seal ring (2) by pipeline.
3. boiler accessory machinery bearing housing inflatable seal device according to claim 2, is characterized in that: described inlet hole (7) is positioned at the left side of outer seal ring (2); Air inlet duct (8) is positioned at the inner side of inlet hole (7).
4. boiler accessory machinery bearing housing inflatable seal device according to claim 1, is characterized in that: described inner seal ring (3) is positioned at below outer seal ring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420838368.0U CN204420125U (en) | 2014-12-26 | 2014-12-26 | A kind of boiler accessory machinery bearing housing inflatable seal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420838368.0U CN204420125U (en) | 2014-12-26 | 2014-12-26 | A kind of boiler accessory machinery bearing housing inflatable seal device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204420125U true CN204420125U (en) | 2015-06-24 |
Family
ID=53470496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420838368.0U Expired - Fee Related CN204420125U (en) | 2014-12-26 | 2014-12-26 | A kind of boiler accessory machinery bearing housing inflatable seal device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204420125U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546903A (en) * | 2016-06-23 | 2018-01-05 | 中电电机股份有限公司 | A kind of high-speed electric expreess locomotive leak-proof arrangement |
-
2014
- 2014-12-26 CN CN201420838368.0U patent/CN204420125U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107546903A (en) * | 2016-06-23 | 2018-01-05 | 中电电机股份有限公司 | A kind of high-speed electric expreess locomotive leak-proof arrangement |
| CN107546903B (en) * | 2016-06-23 | 2019-08-27 | 中电电机股份有限公司 | A kind of high-speed motor leak-proof arrangement |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150624 Termination date: 20171226 |