CN201627606U - Steam sealing body device - Google Patents
Steam sealing body device Download PDFInfo
- Publication number
- CN201627606U CN201627606U CN2010201294550U CN201020129455U CN201627606U CN 201627606 U CN201627606 U CN 201627606U CN 2010201294550 U CN2010201294550 U CN 2010201294550U CN 201020129455 U CN201020129455 U CN 201020129455U CN 201627606 U CN201627606 U CN 201627606U
- Authority
- CN
- China
- Prior art keywords
- steam
- seal
- sealing
- sealing body
- spring
- 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)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model provides a steam sealing body device which relates to the technical field of a sealing device between a front steam seal and a front cylinder of a steam turbine generator. The steam sealing body device comprises the front cylinder and a front steam sealing body, a spring is arranged in the front steam sealing body, and a copper sealing sheet is arranged at the upper part of the spring. A rubber sealing ring which is arranged at the upper part of the copper sealing sheet is particularly fixed on the copper sealing sheet by a screw, and abuts against the front cylinder. With simple structure and good sealing effect, the steam sealing body device cannot be easily damaged.
Description
Technical field
The utility model relates to the seal arrangement between steam turbine generator front steam seal and the preceding cylinder.
Background technique
Steam tight effect before sealing between front steam seal and the preceding cylinder is mainly being born between cylinder and the front steam seal.Because of front steam seal will be mounted on the preceding cylinder, particularly the big vapour stopper of front steam seal branch will pass preceding cylinder, and the sealing between therefore preceding cylinder and the front steam seal just seems particularly important.Inconsistent because of the differential expansion of preceding cylinder and front steam seal, preceding cylinder temperature is higher, and this differential expansion is bigger, remedies this differential expansion so just need take appropriate measures.Traditional mode is that an elastic ring is set between packing housing and cylinder, and the resiliently deformable with elastic ring during work compensates this differential expansion.Labyrinth casing is fastened on the elastic ring.Because of elastic ring is whole the circle, before the rotor lifting, should earlier this elastic ring be hung on the rotor.The maintenance of elastic ring is changed very inconvenient, and the amount of deformation size of elastic ring need determine by the thermal expansion value between cylinder before calculating and the front steam seal, and is more loaded down with trivial details.
Summary of the invention
The purpose of this utility model is exactly in order to solve above-mentioned deficiency, and a kind of labyrinth casing device is provided, and this labyrinth casing apparatus structure is simple, and good sealing effect is not fragile.
For achieving the above object, the utility model by the following technical solutions; A kind of labyrinth casing device comprises preceding cylinder, front steam seal body, is provided with spring in the front steam seal body, spring top is provided with the copper diaphragm seal, copper diaphragm seal top is provided with rubber seal ring, and on the copper diaphragm seal, rubber seal ring abuts against on the preceding cylinder rubber seal ring by screw.
Because the labyrinth casing device comprises preceding cylinder, front steam seal body, be provided with spring in the front steam seal body, spring top is provided with the copper diaphragm seal, and copper diaphragm seal top is provided with rubber seal ring, on the copper diaphragm seal, rubber seal ring abuts against on the preceding cylinder rubber seal ring by screw.Therefore this labyrinth casing apparatus structure is simple, and good sealing effect is not fragile.
Description of drawings
Fig. 1 is the structure sectional view of the utility model labyrinth casing device.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described further, as shown in Figure 1, a kind of labyrinth casing device, cylinder 4, front steam seal body 3 before comprising, be provided with spring 2 in the front steam seal body 3, spring 2 tops are provided with copper diaphragm seal 5, and copper diaphragm seal 5 tops are provided with rubber seal ring 1, on copper diaphragm seal 5, rubber seal ring 1 abuts against on the preceding cylinder 4 rubber seal ring 1 by screw.On copper diaphragm seal 5, this means of fixation is more firm by screw for rubber seal ring 1.Diaphragm seal 5 withstands on the spring 2, pressure that can 2 pairs of rubber seal rings 1 of release spring.During operation, when the differential expansion of current cylinder 4 and front steam seal body 3 changes, because of spring 2 has certain pretightening force, just can servo-actuated seal ring 1 is pressed on preceding cylinder 4 inwalls, thereby realized the effect of servo-actuated sealing.
Claims (1)
1. labyrinth casing device, comprise preceding cylinder (4), front steam seal body (3), it is characterized in that: be provided with spring (2) in the front steam seal body (3), spring (2) top is provided with copper diaphragm seal (5), copper diaphragm seal (5) top is provided with rubber seal ring (1), on copper diaphragm seal (5), rubber seal ring (1) abuts against on the preceding cylinder (4) rubber seal ring (1) by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201294550U CN201627606U (en) | 2010-03-08 | 2010-03-08 | Steam sealing body device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201294550U CN201627606U (en) | 2010-03-08 | 2010-03-08 | Steam sealing body device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201627606U true CN201627606U (en) | 2010-11-10 |
Family
ID=43059000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201294550U Expired - Fee Related CN201627606U (en) | 2010-03-08 | 2010-03-08 | Steam sealing body device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201627606U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791021A (en) * | 2015-01-12 | 2015-07-22 | 沈阳工程学院 | Novel shaft end clearance-free vapor seal of supercritical turbine |
-
2010
- 2010-03-08 CN CN2010201294550U patent/CN201627606U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791021A (en) * | 2015-01-12 | 2015-07-22 | 沈阳工程学院 | Novel shaft end clearance-free vapor seal of supercritical turbine |
| CN104791021B (en) * | 2015-01-12 | 2017-10-10 | 沈阳工程学院 | Supercritical pressure turbine novel shaft end gapless packing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101110 Termination date: 20110308 |