CN100458242C - Structure for preventing water coming into turbine fuel and fuel leakaging - Google Patents
Structure for preventing water coming into turbine fuel and fuel leakaging Download PDFInfo
- Publication number
- CN100458242C CN100458242C CNB2006100214805A CN200610021480A CN100458242C CN 100458242 C CN100458242 C CN 100458242C CN B2006100214805 A CNB2006100214805 A CN B2006100214805A CN 200610021480 A CN200610021480 A CN 200610021480A CN 100458242 C CN100458242 C CN 100458242C
- Authority
- CN
- China
- Prior art keywords
- oil
- fan
- steam turbine
- oil catch
- fuel
- 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.)
- Active
Links
Images
Landscapes
- Turbine Rotor Nozzle Sealing (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
In the invention, a miniature pressurized fan is added at the position of the original rotor boss or the slot in the oil baffle of a turbine, a fan and a compressor, or the miniature pressurized fan adopts a shrink fit on the oil scraper ring. The fan can produce two airflows, an airflow flows on the side of the cylinder to stop the steam leaked from the shaft end from being sucked into the bearing box and the other airflow flows to the bearing box in order to prevent the turbine oil from leaking outwards and water from entering into the turbine oil.
Description
Technical field
The present invention relates to the improvement of turbine rotor bearing case oil catch place structure, a kind of specifically structure that prevents in the steam turbine oil water inlet and the leakage of oil of bearing box of steam turbine oil catch.
Background technique
Intaking in the steam turbine oil, is one of recurrent oil system fault of power plant: water inlet may make turbo-engine lube emulsification in the oil, causes the quality of oil to reduce the safe operation of serious harm steam turbine.Mainly show as: make the cover oxidation of adjusting security department, corrosion cause bite, cause fluctuation of load and hypervelocity easily; Oil quality deterioration can not form oil film, cause vibration and tile kilning accident easily, causes the hydrogen cooled generator hydrogen humidity to exceed standard.At present, general steam turbine oil catch place structural type, structure as shown in Figure 1.In order to prevent in the bearing housing lubricant oil, generally in the middle of two sections oil sealings, adopt and on rotor, install boss additional or groove comes to keep in oil-break and the bearing housing little negative pressure to be lubricated oil seal along the outside seepage of rotor.Because the oil sealing gap is along with the quiet mill that bumps in when operation might increase, bearing housing oil catch and steam turbine axle head are more approaching in addition, it is in service because the labyrinth clearance is excessive, or shaft end gland seal is when sending steam pressure higher, steam in the cylinder just goes out along the axle leak sealing, shaft end gland seal leakage vapour just is inhaled in the bearing housing of negative pressure like this, causes in the oil and intakes.
The place's leakage of oil of steam turbine oil catch also is a most common failure, and leakage of oil causes fire, befouling environment easily.
Summary of the invention
The objective of the invention is to overcome the above-mentioned deficiency of prior art, design a kind of more efficiently structure that prevents in the steam turbine oil water inlet and the leakage of oil of bearing box of steam turbine oil catch.
The objective of the invention is to realize in such a manner: adopt the principle design of similar centrifugal blower to go out structure of the present invention.Comprise epitrochanterian bearing housing, bearing, oil catch and oil catch chamber, cylinder, labyrinth casing, packing, and steam turbine oil catch rotor boss or groove, promptly install a miniature force(d) (draft) fan additional at rotor boss or groove place, the oil catch chamber is connected with one or several can guarantee the suction tude that the oil catch chamber of miniature force(d) (draft) fan outside equates with atmospheric pressure.
The described length that can avoid the suction tude of gland leak-off will exceed the maximum outside diameter of labyrinth casing at least.
Useful good effect of the present invention is: owing to install original rotor boss or groove place additional a miniature force(d) (draft) fan in the steam turbine oil catch, on the one hand can oil-break, utilize the rotor rotation on the other hand, in the chamber of oil catch, form a micro positive pressure chamber automatically, fan produces two strands of air-flows, wherein one air-flow is to the cylinder side flow, stop the suction of axle head leak-off steam, another strand air-flow flows to bearing housing, can prevent that steam turbine oil is to external leakage, like this, the steam that the steam turbine axle head leaks just can't pass through the malleation chamber and be inhaled in the bearing housing, prevent the effect of intaking in the steam turbine oil, also prevent leaking of steam turbine oil simultaneously, thereby reached purpose of the present invention.
Description of drawings
Fig. 1 is an existing steam turbine oil catch place structural representation.
Fig. 2 is a directly processing structure schematic representation on rotor of micro fan of the present invention (9).
Fig. 3 is that micro fan of the present invention (9) processing is gone up employing interference and rotor cooperating structure schematic representation at flinger ring (11).
Fig. 4 is micro fan of the present invention (a 9) schematic representation.
Code name implication among the figure: 1 bearing housing, 2 bearings, 3 oil catches, 4 labyrinth casings, 5 cylinders, 6 packings, 7 rotors, 8 oil catch chambers; 9 micro fans, 10 suction tude, 11 flinger rings
Embodiment
With reference to Fig. 1-Fig. 4, the present invention includes epitrochanterian bearing housing 1, bearing 2, oil catch 3 and oil catch chamber 8, cylinder 5, labyrinth casing 4, packing 6, and steam turbine oil catch 3 rotors, 7 boss or groove are promptly directly processed a miniature force(d) (draft) fan 9 at rotor boss or groove place.Or miniature force(d) (draft) fan 9 is adopting at flinger ring place on the rotor 7 or directly miniature force(d) (draft) fan 9 of processing on rotor 7 of interference fit on the flinger ring 11.Oil catch chamber 8 is connected with one or several can guarantee the suction tude 10 that the oil catch chamber of miniature force(d) (draft) fan outside equates with atmospheric pressure.The oil catch 3 of these two kinds of structures is changed accordingly for adapting to this variation needs, be exactly to need to connect a suction tude 10 at oil catch chamber 8, the oil catch chamber pressure that guarantees micro fan 9 outsides equates with atmospheric pressure, the length of suction tude 10 will be avoided packing 6 leakage vapour simultaneously, the length of suction tude 10 will exceed the maximum outside diameter of labyrinth casing 4 at least, leak vapour to avoid packing 6, prevent that the air that enters oil catch chamber 8 from containing too much moisture.Because turbine rotor 7 rotating speeds are higher, therefore only need to be implemented in oil catch chamber 8 and to produce a micro positive pressure at rotor 7 flinger rings 11 places processing micro fan 9 as shown in Figure 4.
Claims (2)
1. structure that prevents in the steam turbine oil water inlet and leakage of oil, comprise epitrochanterian bearing housing, bearing, oil catch and oil catch chamber, cylinder, labyrinth casing, packing, and steam turbine oil catch rotor boss or groove, it is characterized in that: install a miniature force(d) (draft) fan additional at rotor boss or groove place, the oil catch chamber is connected with one or several can guarantee the suction tude that the oil catch chamber of miniature force(d) (draft) fan outside equates with atmospheric pressure.
2. the structure that prevents in the steam turbine oil water inlet and leakage of oil as claimed in claim 1, it is characterized in that: the length that can avoid the suction tude of gland leak-off will exceed the maximum outside diameter of labyrinth casing at least.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100214805A CN100458242C (en) | 2006-07-27 | 2006-07-27 | Structure for preventing water coming into turbine fuel and fuel leakaging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100214805A CN100458242C (en) | 2006-07-27 | 2006-07-27 | Structure for preventing water coming into turbine fuel and fuel leakaging |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1888484A CN1888484A (en) | 2007-01-03 |
| CN100458242C true CN100458242C (en) | 2009-02-04 |
Family
ID=37577771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100214805A Active CN100458242C (en) | 2006-07-27 | 2006-07-27 | Structure for preventing water coming into turbine fuel and fuel leakaging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100458242C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094845B (en) * | 2011-03-07 | 2013-01-16 | 江苏金通灵流体机械科技股份有限公司 | Shaft seal device of air compressor |
| CN102983675B (en) * | 2012-11-30 | 2015-06-03 | 南阳防爆集团股份有限公司 | Ventilating method and device of motor bearing |
| CN109780217B (en) * | 2019-03-28 | 2024-01-23 | 重庆华能水电设备制造有限公司 | Gap type oil mist preventing sealing cover with air guide structure |
| CN110307041B (en) * | 2019-06-24 | 2024-03-26 | 中信重工机械股份有限公司 | Steam sealing device at end part of steam turbine based on centrifugal compression principle |
| CN112833189B (en) * | 2020-12-30 | 2022-05-10 | 东方电气集团东方汽轮机有限公司 | Shaft end sealing structure of steam turbine water supply pump |
| CN112879106B (en) * | 2021-01-25 | 2022-07-22 | 青岛理工大学 | Steam seal system of steam power device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5611546A (en) * | 1994-05-17 | 1997-03-18 | Siemens Aktiengesellschaft | Labyrinth seal having a pressure inducing fan means |
| JPH10274341A (en) * | 1997-03-31 | 1998-10-13 | Mitsubishi Heavy Ind Ltd | Bearing |
| JPH11344128A (en) * | 1994-04-18 | 1999-12-14 | Kawasaki Steel Corp | Arrangement for bearing-shield and method for use of the same |
| CN2477833Y (en) * | 2001-05-30 | 2002-02-20 | 石占山 | Extraction check device for turbo-set |
| CN2604528Y (en) * | 2003-01-22 | 2004-02-25 | 毛智乾 | Air-tight sealing oil baffle |
| CN2639528Y (en) * | 2003-07-21 | 2004-09-08 | 东方汽轮机厂 | Bearing box oil seal of steam turbine generator |
-
2006
- 2006-07-27 CN CNB2006100214805A patent/CN100458242C/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11344128A (en) * | 1994-04-18 | 1999-12-14 | Kawasaki Steel Corp | Arrangement for bearing-shield and method for use of the same |
| US5611546A (en) * | 1994-05-17 | 1997-03-18 | Siemens Aktiengesellschaft | Labyrinth seal having a pressure inducing fan means |
| JPH10274341A (en) * | 1997-03-31 | 1998-10-13 | Mitsubishi Heavy Ind Ltd | Bearing |
| CN2477833Y (en) * | 2001-05-30 | 2002-02-20 | 石占山 | Extraction check device for turbo-set |
| CN2604528Y (en) * | 2003-01-22 | 2004-02-25 | 毛智乾 | Air-tight sealing oil baffle |
| CN2639528Y (en) * | 2003-07-21 | 2004-09-08 | 东方汽轮机厂 | Bearing box oil seal of steam turbine generator |
Non-Patent Citations (2)
| Title |
|---|
| 气密封油挡在NGZ84.6/83.5/06型汽轮机上的应用. 肖茂东.汽轮机技术，第45卷第5期. 2003 |
| 气密封油挡在NGZ84.6/83.5/06型汽轮机上的应用. 肖茂东.汽轮机技术，第45卷第5期. 2003 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1888484A (en) | 2007-01-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101156008B (en) | Shaft sealing and vacuum pump with the shaft sealing | |
| CN100458242C (en) | Structure for preventing water coming into turbine fuel and fuel leakaging | |
| US8256575B2 (en) | Methods and systems for sealing rotating machines | |
| JPS61121740A (en) | High speed generator for gas turbine | |
| US20100192571A1 (en) | Turbocharger Having a Turbocharger Housing | |
| JP2004116514A (en) | Turbo supercharger | |
| CN103206271B (en) | Turbine shaft seal arrangement | |
| EP3445951B1 (en) | Turbocharger heat shield | |
| CN202832795U (en) | Sealing device and gas turbine with the same | |
| WO2017082166A1 (en) | Bearing structure and supercharger | |
| US20160097293A1 (en) | Compressor seal assembly for a turbocharger | |
| CA2593260C (en) | Bearing housing seal system for centrifugal pumps | |
| US20120100017A1 (en) | Centrifugal compressor unit | |
| JP2011256828A (en) | Oilless screw compressor | |
| CN213393538U (en) | Oil-proof and dust-proof backflow sealing device | |
| CN104018933B (en) | For sealing the midfeather of the back cavity of radial compressor | |
| JP2005163641A (en) | Turbocharger | |
| JP2015504137A (en) | Turbo molecular pump | |
| CN202561055U (en) | Bearing seal device applied to wind power generation unit main shaft system | |
| EP2650485B1 (en) | Shaft sealing system for steam turbines | |
| JP5197116B2 (en) | Screw fluid machine | |
| CN101258330A (en) | Turbocharger with bearing housing having an aerodynamically enhanced compressor wheel pocket geometry | |
| KR200479994Y1 (en) | Cooling arrangement for an axial fan | |
| JP2019167956A (en) | Turbo compressor | |
| JP5398420B2 (en) | Supercharger, diesel engine equipped with the same, and ship equipped with the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |