CN201891842U - Mechanical seal device of metal corrugated pipe - Google Patents
Mechanical seal device of metal corrugated pipe Download PDFInfo
- Publication number
- CN201891842U CN201891842U CN2010206213808U CN201020621380U CN201891842U CN 201891842 U CN201891842 U CN 201891842U CN 2010206213808 U CN2010206213808 U CN 2010206213808U CN 201020621380 U CN201020621380 U CN 201020621380U CN 201891842 U CN201891842 U CN 201891842U
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- ring
- bellows
- corrugated pipe
- mechanical seal
- stationary
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Abstract
The utility model relates to a mechanical seal device of a metal corrugated pipe, which comprises a corrugated pipe, a support ring, a rotary ring, a sealing ring, a stationary ring, a stationary O-shaped sealing ring and a movable O-shaped sealing ring, wherein two ends of the corrugated pipe are respectively connected with the support ring and the rotary ring into a whole, the sealing ring is embedded inside the support ring, and the sealing ring is closely connected with the stationary ring. The technical problems in the background technology that the elastic force of the corrugated pipe is difficult to control, the sealing performance of the corrugated pipe is poor and the service life of the corrugated pipe is short can be solved. The mechanical seal device of the metal corrugated pipe has large elasticity, high carrying pressure, good compensation performance, a long service life and a low cost and saves materials.
Description
Technical field
The utility model relates to a kind of mechanical seal device, relates in particular to a kind of mechanical seal device of metal bellows.
Background technique
The metal bellows mechanical seal device is widely used in the rotating equipment of industries such as oil, chemical industry, electric power.
The sealing effect of metal bellows mechanical seal device depends primarily on two sealing surfaces of bellows and the elastic force of bellows.The elastic force of bellows makes two sealing surfaces can keep just right applying all the time, and bellows elastic force is excessive too small, all can bring adverse consequences.Elastic force is too small, poor sealing performance, and the material leakage rate is big; Elastic force is excessive, and then sealing surface weares and teares easily, has shortened the working life of bellows.
Summary of the invention
The purpose of this utility model is to provide a kind of mechanical seal device of metal bellows, and the elastic force that solves bellows in the background technique is difficult to grasp, and the sylphon seal poor performance, makes short technical problem of life-span.
A kind of mechanical seal device of metal bellows, comprise bellows, seat rings, rotating ring, seal ring, stationary ring, quiet O-ring seals and moving O-ring seals, the two ends distribution of described bellows and seat rings and rotating ring link into an integrated entity, be inlaid with seal ring in the described seat rings, described seal ring closely links to each other with stationary ring, to realize sealing.
Above-mentioned bellows is formed by several corrugated plate assembly weldings, and each corrugated plate is made up of four different circular arcs and an edge angle, and described edge angle is 45 °.After bellows is stressed, produce F power, the vector of root a tree name power be decomposed into F1 and F2, and the effect of power F1 has the trend that corrugated plate is evened up, and its reaction force mainly is an elastic force; F2 is an axial force, nose balance power when on the whole it mainly embodies work from bellows.The inventor is by a large amount of theoretical researches and evidence: the elastic force that guarantee bellows is suitable, then between F1 and the F2 suitable ratio must be arranged, and this ratio changes with corrugated plate circular arc size.Bellows is as elastic element, be in stressed working state for a long time, the fatigue strength that ordinary circumstance is welded to foreign round can descend greatly, and adopt edge angle just can overcome this problem for 45 °, reason is corrugated plate when stressed, because 45 degree corrugated plate produces deform in same pace, butt welded seam does not produce fatigue stress, therefore weld seam can not crack, and improves working life greatly.
Above-mentioned bellows is the AM350 bellows, and rotating ring is the stainless steel rotating ring, and ring seat 5 is the stainless steel ring seat, and seal ring is a graphite-seal ring, and stationary ring is silicon oxide carbide stationary ring or cemented carbide stationary ring.
The utlity model has that elasticity is big, bearing pressure is high, compensation performance is good, the life-span is long, save material (can reduce corrugated plate quantity), cost is low.
Description of drawings
Fig. 1 is the overall structure schematic representation of metal bellows mechanical seal;
Fig. 2 is the edge angle schematic representation of bellows.
The 1-rotating ring, 2-transmission screw, one of 3-O shape seal ring, 4-bellows, 5-seat rings, 6-seal ring, 7-stationary ring, two of 8-O shape seal ring.
Embodiment
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing:
Fig. 1 is the structure of metal bellows mechanical seal.O-ring seals, bellows, ring seat, seal ring, stationary ring, stationary ring O-ring seals by rotating ring, transmission screw, moving ring assembly constitute.Bellows 4 is the AM350 material, and rotating ring 1, ring seat 5 are stainless steel material, and seal ring 6 is a graphite material, and stationary ring 7 is SiC or cemented carbide.Seal ring 6 is embedded in the seat rings 5, and bellows 4 is integrally welded with seat rings 5 and rotating ring 1 respectively, and 3 and 8 is O-ring seals, relies on the elasticity of bellows between rotation graphite annulus 6 and the stationary ring 7, graphite annulus evenly is fitted on the plane of stationary ring 7 all the time, to realize sealing.The 2nd, screw, effect is to transmit the used power of rotation to give black box.
Fig. 2. be the edge angle schematic representation of bellows.R1, R2, R3, R4 represent the public sheet circular arc size code name of bellows respectively; R11, R22, R33, R44 represent the master slice circular arc size code name of bellows respectively; F represents the power (its reaction force mainly is an elastic force) that the stressed of bellows: F1 evens up corrugated plate, and F2 is an axial force.
Claims (3)
1. the mechanical seal device of a metal bellows, it is characterized in that: comprise bellows, seat rings, rotating ring, seal ring, stationary ring, quiet O-ring seals and moving O-ring seals, the two ends distribution of described bellows and seat rings and rotating ring link into an integrated entity, be inlaid with seal ring in the described seat rings, described seal ring closely links to each other with stationary ring.
2. the mechanical seal device of metal bellows according to claim 1, it is characterized in that: described bellows is formed by several corrugated plate assembly weldings, and each corrugated plate is made up of four different circular arcs and an edge angle, and described edge angle is 45 °.
3. the mechanical seal device of metal bellows according to claim 1 and 2, it is characterized in that: above-mentioned bellows is the AM350 bellows, and rotating ring is the stainless steel rotating ring, and ring seat 5 is the stainless steel ring seat, seal ring is a graphite-seal ring, and stationary ring is silicon oxide carbide stationary ring or cemented carbide stationary ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206213808U CN201891842U (en) | 2010-11-22 | 2010-11-22 | Mechanical seal device of metal corrugated pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206213808U CN201891842U (en) | 2010-11-22 | 2010-11-22 | Mechanical seal device of metal corrugated pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201891842U true CN201891842U (en) | 2011-07-06 |
Family
ID=44221319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206213808U Expired - Fee Related CN201891842U (en) | 2010-11-22 | 2010-11-22 | Mechanical seal device of metal corrugated pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201891842U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588682A (en) * | 2012-02-20 | 2012-07-18 | 刘明辉 | One-step formed weldless mechanically sealed metal corrugated pipe |
| CN105627007A (en) * | 2016-03-30 | 2016-06-01 | 中航光电科技股份有限公司 | Rotary connector and graphite sealing ring thereof |
-
2010
- 2010-11-22 CN CN2010206213808U patent/CN201891842U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588682A (en) * | 2012-02-20 | 2012-07-18 | 刘明辉 | One-step formed weldless mechanically sealed metal corrugated pipe |
| CN105627007A (en) * | 2016-03-30 | 2016-06-01 | 中航光电科技股份有限公司 | Rotary connector and graphite sealing ring thereof |
| CN105627007B (en) * | 2016-03-30 | 2018-01-16 | 中航光电科技股份有限公司 | A kind of rotary connector and its graphite-seal ring |
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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: 20110706 Termination date: 20161122 |