CN201851171U - Sealing device used between front steam seal and high pressure cylinder of steam turbine - Google Patents
Sealing device used between front steam seal and high pressure cylinder of steam turbine Download PDFInfo
- Publication number
- CN201851171U CN201851171U CN201020608012XU CN201020608012U CN201851171U CN 201851171 U CN201851171 U CN 201851171U CN 201020608012X U CN201020608012X U CN 201020608012XU CN 201020608012 U CN201020608012 U CN 201020608012U CN 201851171 U CN201851171 U CN 201851171U
- Authority
- CN
- China
- Prior art keywords
- seal
- pressure cylinder
- steam
- steam turbine
- ring
- 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 - Lifetime
Links
- 238000007789 sealing Methods 0.000 title abstract description 17
- 230000000694 effects Effects 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 210000000080 chela (arthropods) Anatomy 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Landscapes
- Gasket Seals (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model relates to a sealing device used between a front steam seal and a high pressure cylinder of a steam turbine, which has a simple structure, is convenient to install, solves problems of installation and overhaul when a sealing ring and an entire elastic ring are used for sealing under the support of a spring, saves cost and improves sealing effect between the front steam seal and the high pressure cylinder of the steam turbine. The sealing device comprises an annular sealing groove which is formed on a front steam seal body of the steam turbine, wherein the sealing ring is arranged in the sealing groove and is matched with the high pressure cylinder.
Description
Technical field
The utility model relates to a kind of seal arrangement, the seal arrangement that adopts between especially a kind of steam turbine front steam seal and the high-pressure cylinder.
Background technique
The seal arrangement that adopts between at present general steam turbine front steam seal and the high-pressure cylinder is a kind of front steam seal of follow-up-type and the seal arrangement between the high-pressure cylinder.It comprises high-pressure cylinder and front steam seal body with matching, and the seal arrangement of the follow-up-type between high-pressure cylinder and front steam seal is installed in the front steam seal body by seal ring and spring with matching and reaches seal action, and processed complex is installed, and has increased to become half.And traditional whole circle elastic ring sealing, labyrinth casing is fastened on the elastic ring, and the elastic ring of whole circle should hang on the rotor before the rotor lifting in advance, and this has brought very big trouble for the installation maintenance of elastic ring.
The model utility content
The utility model is for overcoming above-mentioned the deficiencies in the prior art, the seal arrangement that adopts between a kind of steam turbine front steam seal and the high-pressure cylinder is provided, it is simple in structure, easy for installation, avoided supporting seal ring seal and the existing problem of overhauling has been installed when elastic ring seals with whole the circle with spring, save cost, improved the sealing effect between steam turbine front steam seal and the high-pressure cylinder.
The purpose of this utility model is to adopt following technical proposals to realize:
The seal arrangement that adopts between a kind of steam turbine front steam seal and the high-pressure cylinder, it comprises the annular seal groove that is arranged on the steam turbine front steam seal body, and seal ring is installed in the seal groove, seal ring cooperates with high-pressure cylinder.
Described steam turbine front steam seal body is divided into upper and lower two halves, and each partly is equipped with seal groove; Described seal ring also is divided into upper and lower two halves, and upper and lower two halves seal ring is installed in respectively in the described upper and lower seal groove.
Be provided with the magnitude of interference of 0.10-0.15mm between described upper and lower two halves seal ring.
It between described seal ring and high-pressure cylinder interference fit.
Seal arrangement of the present utility model is installed on the steam turbine front steam seal body, and steam turbine front steam seal body is provided with annular seal groove, and seal ring is installed in the seal groove.
Whole sealing device comprises up and down two halves seal ring and steam turbine front steam seal body with matching two halves up and down, and seal ring is installed in the annular seal groove on the steam turbine front steam seal body.It reaches sealing effect by being installed in seal ring in the steam turbine front steam seal body seal groove and the interference fit between the high-pressure cylinder.
The seal arrangement that adopts between this steam turbine front steam seal and the high-pressure cylinder comprises seal ring and front steam seal body.Seal ring is installed in the whole circle seal groove of front steam seal body
What the utility model adopted is that interior seal ring of steam turbine front steam seal body seal groove and the interference fit between the high-pressure cylinder reach sealing effect.Two halves up and down are cut into along horizontal flange in the whole circle processing of seal ring back, and with the molybdenum filament cutting of diameter 0.3, when assembling in high-pressure cylinder, pincers are built second split, the magnitude of interference of 0.10-0.15mm between second split in the assurance.
The beneficial effects of the utility model are: simple in structure, easy for installation, avoided supporting seal ring seal and the existing problem of overhauling has been installed when elastic ring seals with whole the circle with spring, save cost, improved the sealing effect between steam turbine front steam seal and the high-pressure cylinder.
Description of drawings
Fig. 1 is the utility model structural representation;
1. seal rings wherein, 2. seal groove, 3. front steam seal body, 4 high-pressure cylinders.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
Among Fig. 1, the utility model is that front steam seal body 3 is installed on the high-pressure cylinder 4, and seal ring 1 is installed between the seal groove 2 on high-pressure cylinder 4 and the front steam seal body 3.Front steam seal body 3 minutes is upper and lower half, first and second all have seal groove 2, respectively install, second seal ring 1.Seal ring 1 is cut into upper and lower two halves for whole circle processing back along horizontal flange, molybdenum filament cutting with diameter 0.3, when in high-pressure cylinder 4, assembling, pincers are built second split, guarantee the magnitude of interference of 0.10-0.15mm between upper and lower half split, be pressed on the inwall of high-pressure cylinder 4 by the sealing surface of this magnitude of interference with seal ring 1.During operation, when the differential expansion of high-pressure cylinder 4 and front steam seal body 3 changes, seal ring 1 compensates this differential expansion because of the resiliently deformable that the magnitude of interference that compresses 0.10-0.15mm produces, and this device utilizes this principle to improve sealing effect between steam turbine front steam seal and the high-pressure cylinder just.This device effect is very desirable in actual applications.
Claims (4)
1. the seal arrangement that adopts between steam turbine front steam seal and the high-pressure cylinder is characterized in that it comprises the annular seal groove that is arranged on the steam turbine front steam seal body, and seal ring is installed in the seal groove, and seal ring cooperates with high-pressure cylinder.
2. the seal arrangement that adopts between steam turbine front steam seal as claimed in claim 1 and the high-pressure cylinder is characterized in that, described steam turbine front steam seal body is divided into upper and lower two halves, and each partly is equipped with seal groove; Described seal ring also is divided into upper and lower two halves, and upper and lower two halves seal ring is installed in respectively in the described upper and lower seal groove.
3. the seal arrangement that adopts between steam turbine front steam seal as claimed in claim 2 and the high-pressure cylinder is characterized in that, is provided with the magnitude of interference of 0.10-0.15mm between described upper and lower two halves seal ring.
4. the seal arrangement that adopts between steam turbine front steam seal as claimed in claim 1 and the high-pressure cylinder is characterized in that, is interference fit between described seal ring and high-pressure cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020608012XU CN201851171U (en) | 2010-11-16 | 2010-11-16 | Sealing device used between front steam seal and high pressure cylinder of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020608012XU CN201851171U (en) | 2010-11-16 | 2010-11-16 | Sealing device used between front steam seal and high pressure cylinder of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201851171U true CN201851171U (en) | 2011-06-01 |
Family
ID=44093570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020608012XU Expired - Lifetime CN201851171U (en) | 2010-11-16 | 2010-11-16 | Sealing device used between front steam seal and high pressure cylinder of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201851171U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230397A (en) * | 2011-07-09 | 2011-11-02 | 潍坊雷诺特动力设备有限公司 | Steam sealing system for steam power device |
-
2010
- 2010-11-16 CN CN201020608012XU patent/CN201851171U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102230397A (en) * | 2011-07-09 | 2011-11-02 | 潍坊雷诺特动力设备有限公司 | Steam sealing system for steam power device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110601 |