CN2802091Y - Adjustable gland sealing ring - Google Patents
Adjustable gland sealing ring Download PDFInfo
- Publication number
- CN2802091Y CN2802091Y CN 200520020737 CN200520020737U CN2802091Y CN 2802091 Y CN2802091 Y CN 2802091Y CN 200520020737 CN200520020737 CN 200520020737 CN 200520020737 U CN200520020737 U CN 200520020737U CN 2802091 Y CN2802091 Y CN 2802091Y
- Authority
- CN
- China
- Prior art keywords
- seal ring
- gland sealing
- adjusting device
- steam seal
- adjustable
- 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
Images
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
The utility model discloses an adjustable gland sealing ring of a steam turbine, which effectively improves the tightness of a vacuum system of a steam turbine, improves the work efficiency of a unit, saves the resource, and also eliminates the potential safety hazard caused by gas leakage or air leakage. The utility model is an annular gland sealing ring which is composed of a plurality of gland sealing units. The adjustable gland sealing ring of a steam turbine is characterized in that the gland sealing units are composed of gland sealing blocks 2, a plurality of carriers 3, adjustable devices 4, the number of which is double times of the number of the carriers, a spring piece 7 and a bolt 6 which is used for fixing the spring piece. The gland sealing blocks 2 are inlaid in dovetail grooves of the carriers 3, the adjustable devices 4 are fixed outside the carriers 3 to form carrier assemblies which are orderly arranged to form an annular gland sealing ring, and the gland sealing ring is arranged between a gland sealing body 5 and a steam turbine spindle 1.
Description
Technical field:
The utility model relates to the water-tight equipment on the steam turbine.
Technical background:
During the steam turbine running, the rotor high-speed rotation, and stationary parts such as cylinder, dividing plate maintain static, and for avoiding bumping mill between rotor and stator, leave suitable gap between them, this gap just can be directed at Lou vapour or gas leakage.The main shaft of steam turbine passes the cylinder place, have at high, middle pressure two ends steam in the cylinder to external leakage, this leakage is referred to as leakage vapour, causes lubricated Water in oil.And have air to the cylinder internal leakage at the low pressure (LP) cylinder two ends, and reducing the degree of vacuum of vacuum system, this leakage is referred to as gas leakage, not only can reduce the efficient of unit, also can influence the safe operation of unit.
What modern power station steam turbine adopted all is labyrinth gland, be also referred to as labyrinth gland, structural type commonly used has: comb teeth shape, fourth shape and vertical tree-like, no matter the sort of structural type, the radial clearance on gland sealing gear internal surface and rotating shaft surface all is 0.75m ± 0.05mm, and this gap is a fixed value.This gap becomes the central core of circulation of leaking vapour or gas leakage, directly influences Economy, has also wasted a large amount of resources simultaneously.
Summary of the invention
The utility model purpose is the adjustable steam seal ring that discloses a kind of steam turbine, and it has improved the leakproofness of turbine vacuum system effectively, has improved the working efficiency of unit, has saved resource, and has also eliminated owing to leaking the potential safety hazard that vapour or gas leakage cause.
It is an annular steam seal ring of being made up of even number packing unit for the utility model, it is characterized in that: described packing unit is by gland blocks 2, and several carriers 3 are double in the adjusting device 4 of carrier, and the screw 6 of spring sheet 7 and stationary spring is formed; Gland blocks 2 is embedded in the dovetail groove of carrier 3, and adjusting device 4 is fixed on carrier 3 outsides, forms the vehicle group component, and this assembly parts is arranged in order the steam seal ring of forming annular, and steam seal ring is installed between labyrinth casing 5 and the turbine spindle 1; Adjusting device 4 is inlaid in the T-slot 5-1 of labyrinth casing 5, and solid to turbine spindle 1 direction top by spring sheet 6; Adjusting device 4 internal surface 4-2 are stuck on the horizontal boss outer surface in labyrinth casing 5T shape groove 5-1 both sides, install spacer 8 additional; Gap between gland blocks 2 internal surface 2-1 and the turbine spindle 1 boss outer surface 1-1 is 0.05mm～0.075mm.Interstice coverage is between 0～2.5mm between the internal surface 2-1 of gland blocks 2 and the turbine spindle 1 boss outer surface 1-1.
Described adjusting device 4, it comprises positioning plate 4-1, adjusts pad 8, fastening screw trip bolt 9; Adjust pad 8 and be installed in the middle of positioning plate 4-1 and the carrier 3 outer surface breach 3-2, fastening by screw 9.
Described adjustable packing, when the turbine spindle 1 that is used for packing was the plane, gland blocks 2 internal surface 2-1 then were processed into labyrinth.
Described adjustable packing, when the T-slot 5-1 of labyrinth casing 5 is half "T"-shaped groove, both during " " shape, 4 of adjusting devices are one side-prominent.
Described gland blocks 2 width L must cover two or more turbine spindles 1 boss outer surface 1-1.
Gap between gland blocks 2 internal surface 2-1 and the turbine spindle 1 boss outer surface 1-1 is 0.05mm～0.075mm.Also can change spacer, reach the requirement gap according to customer requirements.Because gland blocks internal surface 2-1 and turbine spindle 1 boss outer surface 1-1 adjustable gaps, minimum value can be zero, thereby have eliminated leakage vapour or gas leak phenomenon.Solved the sealing difficult problem of steam turbine.
Description of drawings:
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the B enlarged view of Fig. 1;
Fig. 3 is the embodiment's 1 of Fig. 1 an A-A sectional view;
Fig. 4 is the embodiment's 2 of Fig. 1 an A-A sectional view.
Embodiment:
Embodiment is shown in Fig. 3,4, it forms the carrier combinations part by gland blocks 2, carrier 3, adjusting device 4, spring, its cross section is " soil " font, and six vehicle group components are arranged in order into belt steam seal ring, and this steam seal ring is arranged between labyrinth casing 5 and the turbine spindle 1.Adjusting device 4 is inlaid in the T-slot 5-1 of labyrinth casing 5, and solid to turbine spindle 1 direction top by spring sheet 6.Adjusting device 4 internal surface 4-1 are stuck on the horizontal boss outer surface in labyrinth casing 5T shape groove 5-1 both sides, install spacer 8 additional, guarantee that the gap between gland blocks 2 internal surface 2-1 and the turbine spindle 1 boss outer surface 1-1 is 0.05mm～0.075mm.Adjusting device comprises: positioning plate 4-1, adjust pad 8, screw 9.Carrier 3 outer surface both sides have breach 3-2, adjustment pad 8 in the adjusting device 4, be installed in the middle of the outer surface breach 3-2 and the positioning plate 4-1 in the adjusting device 4 of carrier 3, and fastening with screw 9, because positioning plate 4-1 bi-side 4-2 is subjected to the horizontal boss restriction in labyrinth casing 5T shape groove 5-1 both sides in the adjusting device 4.Gland blocks 2 internal surface 2-1 can not be withstood on the turbine spindle 1 boss outer surface 1-1, but leave the gap of 0.05～0.075mm.This gap can prevent that gas-turbine main shaft 1 from producing a large amount of heats because of friction and causing 1 temperature distortion of gas-turbine main shaft in operation process.The width L of gland blocks 2 must cover two or more turbine spindles 1 boss outer surface 1-1.The multiple-effect fruit is good more more for the quantity that covers.
Claims (5)
1. adjustable steam seal ring, it be is characterized in that by the annular steam seal ring that even number packing unit is formed: described packing unit is by gland blocks (2), several carriers (3), double adjusting device (4) in carrier, the screw (6) of spring sheet (7) and stationary spring is formed; Gland blocks (2) is embedded in the dovetail groove of carrier (3), and adjusting device (4) is fixed on carrier (3) outside, forms the vehicle group component, and this assembly parts is arranged in order the steam seal ring of forming annular, and steam seal ring is installed between labyrinth casing (5) and the turbine spindle (1); Adjusting device (4) is inlaid in the T-slot (5-1) of labyrinth casing (5), and solid to turbine spindle (1) direction top by spring sheet (6); Adjusting device (4) internal surface (4-2) is stuck on the horizontal boss outer surface in labyrinth casing (5) T-slot (5-1) both sides, installs spacer (8) additional; Gap between gland blocks (2) internal surface (2-1) and turbine spindle (1) the boss outer surface (1-1) is 0.05mm～0.075mm, and interstice coverage is between 0～2.5mm between the internal surface (2-1) of gland blocks (2) and turbine spindle (1) the boss outer surface (1-1).
2. adjustable steam seal ring according to claim 1.It is characterized in that: adjusting device (4), it comprises positioning plate (4-1), adjusts pad (8), fastening screw trip bolt (9); Adjust pad (8) and be installed in the middle of positioning plate (4-1) and carrier (3) the outer surface breach (3-2), fastening by screw (9).
3. adjustable steam seal ring according to claim 1 is characterized in that: when the turbine spindle that is used for packing (1) was the plane, gland blocks (2) internal surface (2-1) then was processed into labyrinth.
4. adjustable steam seal ring according to claim 1 is characterized in that: when the T-slot (5-1) of labyrinth casing (5) is half "T"-shaped groove, both during " " shape, adjusting device (4) then is one side-prominent.
5. adjustable steam seal ring according to claim 1 is characterized in that described gland blocks (2) width L must cover two or more turbine spindles (1) boss outer surfaces (1-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520020737 CN2802091Y (en) | 2005-04-29 | 2005-04-29 | Adjustable gland sealing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520020737 CN2802091Y (en) | 2005-04-29 | 2005-04-29 | Adjustable gland sealing ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2802091Y true CN2802091Y (en) | 2006-08-02 |
Family
ID=36846800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520020737 Expired - Fee Related CN2802091Y (en) | 2005-04-29 | 2005-04-29 | Adjustable gland sealing ring |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2802091Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102032349A (en) * | 2011-01-18 | 2011-04-27 | 孟金来 | Adjustable labyrinth sealing device |
| CN102587995A (en) * | 2011-01-17 | 2012-07-18 | 杭州中能汽轮动力有限公司 | Rotor of steam turbine for driving water feeding pump of boiler with power lower than 300MW (megawatt) and starting method of rotor |
| CN112524249A (en) * | 2020-12-17 | 2021-03-19 | 东方电气集团东方电机有限公司 | Oil groove sealing structure |
-
2005
- 2005-04-29 CN CN 200520020737 patent/CN2802091Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102587995A (en) * | 2011-01-17 | 2012-07-18 | 杭州中能汽轮动力有限公司 | Rotor of steam turbine for driving water feeding pump of boiler with power lower than 300MW (megawatt) and starting method of rotor |
| CN102032349A (en) * | 2011-01-18 | 2011-04-27 | 孟金来 | Adjustable labyrinth sealing device |
| CN102032349B (en) * | 2011-01-18 | 2012-07-25 | 孟金来 | Adjustable labyrinth sealing device |
| CN112524249A (en) * | 2020-12-17 | 2021-03-19 | 东方电气集团东方电机有限公司 | Oil groove sealing structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4979755A (en) | Flow dams in labyrinth seals to improve rotor stability | |
| EP1860356B1 (en) | Method and apparatus for variable clearance packing | |
| US9909440B2 (en) | Interlocking hole pattern seal | |
| ATE191964T1 (en) | TURBINE FOR ELASTIC FLOWS WITH A SEGMENTED SEALING RING | |
| US7484927B2 (en) | Steam turbine variable clearance packing | |
| GB2432639A (en) | Axially adjustable sealing ring | |
| CN2802091Y (en) | Adjustable gland sealing ring | |
| US20160290511A1 (en) | Shaft seal and method for producing same | |
| CN110439631B (en) | Labyrinth sealing structure capable of controlling active clearance | |
| CN204921991U (en) | Two lamella formula carbocycles are sealed | |
| CN111140618A (en) | Staggered sealing tooth type squeeze film damper | |
| CN114458764B (en) | Built-in multidirectional multi-lip sealing device | |
| CN202001136U (en) | Airtight oil seal structure for crankshaft of diesel engine | |
| CN204609955U (en) | A kind of Multi-tooth corrugated sheet elastic sealing device | |
| CN210178423U (en) | Self-sealing gland seal of steam turbine | |
| CN216112166U (en) | Combined labyrinth sealing device | |
| CN205244392U (en) | Quick -witted main shaft bearing seal structure of O -Sepa selection powder | |
| CN203796969U (en) | Labyrinth type shutdown seal device | |
| CN202612648U (en) | Zero-gravity dynamic pressure groove magnetic shaft sealing device | |
| CN209959545U (en) | Centrifugal vapor compressor combination formula seal structure of MVR | |
| CN204201098U (en) | A kind of unidirectional combination ring gear seal arrangement | |
| CN103603803B (en) | A kind of water vapor screw compressor shaft seal structure | |
| EP1790887A1 (en) | Apparatus and method for steam turbine variable clearance packing | |
| CN115163213B (en) | Rotary power generation equipment with isolation steam seal structure | |
| CN215761813U (en) | Novel sealing oil baffle system |
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: 20060802 |