CN201635774U - Following gland casing device - Google Patents
Following gland casing device Download PDFInfo
- Publication number
- CN201635774U CN201635774U CN2010201498755U CN201020149875U CN201635774U CN 201635774 U CN201635774 U CN 201635774U CN 2010201498755 U CN2010201498755 U CN 2010201498755U CN 201020149875 U CN201020149875 U CN 201020149875U CN 201635774 U CN201635774 U CN 201635774U
- Authority
- CN
- China
- Prior art keywords
- spring
- casing device
- seal
- cylinder
- gland casing
- 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 Devices (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model provides a following gland casing device, relating to the technical field of a sealing device between a front gland casing and a front gas cylinder of a steam turbine generator. The following gland casing device comprises a front cylinder and a front gland casing, wherein the front gland casing is internally provided with a spring; the upper part of the spring is provided with an aluminium sealing sheet; and the upper part of the aluminium sealing sheet is provided with a rubber sealing ring that tightly pushes against the front cylinder. The following bland casing device has simple structure and good sealing effect and is not easy to damage.
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 of follow-up-type is provided, and the labyrinth casing apparatus structure of this follow-up-type 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 of follow-up-type comprises preceding cylinder, front steam seal body, is provided with spring in the front steam seal body, and spring top is provided with the aluminum diaphragm seal, and aluminum diaphragm seal top is provided with rubber seal ring, and rubber seal ring abuts against on the preceding cylinder.
Because the labyrinth casing device of this follow-up-type comprises preceding cylinder, front steam seal body, is provided with spring in the front steam seal body, spring top is provided with the aluminum diaphragm seal, and aluminum diaphragm seal top is provided with rubber seal ring, and rubber seal ring abuts against on the preceding cylinder.Therefore the labyrinth casing apparatus structure of this follow-up-type is simple, and good sealing effect is not fragile.
Description of drawings
Fig. 1 is the structure sectional view of the labyrinth casing device of the utility model follow-up-type.
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 of follow-up-type, 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 aluminum diaphragm seal 5, and aluminum diaphragm seal 5 tops are provided with rubber seal ring 1, and rubber seal ring 1 abuts against on the preceding cylinder 4.Aluminum 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. the labyrinth casing device of a follow-up-type, 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 aluminum diaphragm seal (5), aluminum diaphragm seal (5) top is provided with rubber seal ring (1), and rubber seal ring (1) abuts against on the preceding cylinder (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201498755U CN201635774U (en) | 2010-03-20 | 2010-03-20 | Following gland casing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201498755U CN201635774U (en) | 2010-03-20 | 2010-03-20 | Following gland casing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201635774U true CN201635774U (en) | 2010-11-17 |
Family
ID=43080263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201498755U Expired - Fee Related CN201635774U (en) | 2010-03-20 | 2010-03-20 | Following gland casing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201635774U (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
- 2010-03-20 CN CN2010201498755U patent/CN201635774U/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: 20101117 Termination date: 20110320 |