CN2451815Y - Assembling bellows sealing ring - Google Patents
Assembling bellows sealing ring Download PDFInfo
- Publication number
- CN2451815Y CN2451815Y CN 00264245 CN00264245U CN2451815Y CN 2451815 Y CN2451815 Y CN 2451815Y CN 00264245 CN00264245 CN 00264245 CN 00264245 U CN00264245 U CN 00264245U CN 2451815 Y CN2451815 Y CN 2451815Y
- Authority
- CN
- China
- Prior art keywords
- soft ring
- ring
- basal body
- soft
- press piece
- 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
Links
Landscapes
- Sealing Devices (AREA)
Abstract
The utility model discloses an assembling bellows sealing ring which comprises a basal body, a soft ring and a press piece, wherein external screw threads are arranged on the external diameter of the basal body; the soft ring is arranged at the lower part of the basal body, the upper part of the soft ring is provided with a groove, and the lower part of the soft ring is provided with a dummy club; the press piece forms a circular ring shape, one end of the internal diameter of the press piece is provided with internal screw threads, the other end is provided with a lug boss, and the press piece is matched with the basal body and the soft ring; flexible graphite is filled in the groove of the upper part of the soft ring. The utility model solves the problem of high-temperature fatigue for the connection of the soft ring and austenitic stainless steel, and does not need high machining precision and complete high-temperature inlaying technology equipment and measure so as to reduce cost as well as simplify operation, and realizes the requirements of high temperature, high pressure and small volume for mechanical seal.
Description
The utility model relates to the Sealing in mechanical sealing technology field, particularly a kind of assembly type sylphon seal ring.
Bellows mechanical seal is widely used in fields such as oil, chemical industry, aviation, along with the continuous development of science and technology, mechanical seal is also proposed new requirement, and high pressure, high temperature, small volume have become developing direction.Ring employing rigidity interference mosaic structure before the sylphon seal in the prior art, the soft ring of this kind structure is inlayed with the heat that matrix (Austenitic Stainless Steel) assembling is recommended and is cooperated data only to be applicable to that true temperature is in the temperature below 260 ℃, when if the applying working condition temperature surpasses 260 ℃, because the linear expansion coefficient of Austenitic Stainless Steel and the linear expansion coefficient of soft ring (as graphite annulus) differ bigger, under the situation of the about ￠ 70 of pump shaft diameter, there has not been interference, cause loose or dislocation, and leak between soft ring and the matrix and can't solve, if the magnitude of interference under the normal temperature situation is strengthened, the mechanical strength of soft ring does not allow, if matrix adopting and the more approaching material of soft ring expansion coefficient have then strengthened cost of production.
The purpose of this utility model is a kind of assembly type sylphon seal ring that adopts thread connecting mode to substitute the interference mosaic structure that designs at the deficiency of above-mentioned technology existence, it has been avoided because the different linear expansion coefficients that different materials causes cause seal failure under the situation of temperature variation, can guarantee that temperature do not have the gap yet and leak simultaneously under 400 ℃ operating mode.
The purpose of this utility model is achieved in that
Assembly type sylphon seal ring, it comprises: an external diameter car has externally threaded matrix; One be located at matrix underpart, have a groove from the body, boss is arranged at the bottom soft ring; The casting die circular, that internal diameter one end car has internal thread, an end one boss to be arranged and cooperate with matrix, soft ring.In the soft ring upper grooves Expanded graphite is housed.
The utility model has solved the high temperature failure problem that graphite annulus is connected with Austenitic Stainless Steel, it need not complete process equipment, the means that higher processing precision and high temperature are inlayed, both reduce cost, simplified operation again, realized the requirement of mechanical seal high temperature, high pressure, small volume.
Below in conjunction with accompanying drawing the utility model is described in detail:
Accompanying drawing is a structural representation of the present utility model
Among the figure: the soft ring of 1-matrix 2-groove 3-casting die 4-
Consult accompanying drawing, the utility model is made up of matrix 1 (mostly being Austenitic Stainless Steel), soft ring 4, casting die 3, matrix 1 external diameter car has outside thread, soft ring 4 is located at matrix underpart, has a groove 2 from the body, boss is arranged at the bottom, and casting die 3 has internal thread, an end that one boss is arranged for circular, internal diameter one end car.During installation, put into Expanded graphite in the groove 2 with soft ring 4 tops earlier, matrix 1 is fitted together with soft ring 4, casting die 3 one ends and matrix 1 outside thread are tightened, the boss of the other end and soft ring 4 bottoms also closely cooperates when tightening, make the Expanded graphite distortion, solve the leakage between matrix 1 and the soft ring 4, finish installment work.
In the utility model, can not establish groove 2 on the soft ring 4, add one deck Expanded graphite pad, can realize same purpose at soft ring 4 upper surfaces.
Claims (2)
1, a kind of assembly type sylphon seal ring is characterized in that it comprises: an external diameter car has externally threaded matrix (1); One be located at matrix (1) bottom, have a groove (2) from the body, boss is arranged at the bottom soft ring (4); The casting die (3) circular, that internal diameter one end car has internal thread, an end one boss to be arranged and cooperate with matrix (1), soft ring (4).
2, seal ring according to claim 1 is characterized in that in described soft ring (4) upper grooves Expanded graphite being housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00264245 CN2451815Y (en) | 2000-12-07 | 2000-12-07 | Assembling bellows sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00264245 CN2451815Y (en) | 2000-12-07 | 2000-12-07 | Assembling bellows sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2451815Y true CN2451815Y (en) | 2001-10-03 |
Family
ID=33618994
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00264245 Expired - Fee Related CN2451815Y (en) | 2000-12-07 | 2000-12-07 | Assembling bellows sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2451815Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664048A (en) * | 2012-03-23 | 2012-09-12 | 宁波天生密封件有限公司 | Metal graphite o-shaped ring |
| CN104791488A (en) * | 2015-02-14 | 2015-07-22 | 江苏科奥流体科技有限公司 | Corrugated pipe mechanical sealing structure for petrochemical engineering |
-
2000
- 2000-12-07 CN CN 00264245 patent/CN2451815Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664048A (en) * | 2012-03-23 | 2012-09-12 | 宁波天生密封件有限公司 | Metal graphite o-shaped ring |
| CN102664048B (en) * | 2012-03-23 | 2015-02-18 | 宁波天生密封件有限公司 | Metal graphite o-shaped ring |
| CN104791488A (en) * | 2015-02-14 | 2015-07-22 | 江苏科奥流体科技有限公司 | Corrugated pipe mechanical sealing structure for petrochemical engineering |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |