CN106640219A - Novel multifunctional modular sealing system for turbine expansion unit - Google Patents
Novel multifunctional modular sealing system for turbine expansion unit Download PDFInfo
- Publication number
- CN106640219A CN106640219A CN201710019340.2A CN201710019340A CN106640219A CN 106640219 A CN106640219 A CN 106640219A CN 201710019340 A CN201710019340 A CN 201710019340A CN 106640219 A CN106640219 A CN 106640219A
- Authority
- CN
- China
- Prior art keywords
- rotor shaft
- seal
- shaft extension
- expansion unit
- turbine expansion
- 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.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/003—Preventing or minimising internal leakage of working-fluid, e.g. between stages by packing rings; Mechanical seals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/02—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D11/00—Preventing or minimising internal leakage of working-fluid, e.g. between stages
- F01D11/02—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type
- F01D11/04—Preventing or minimising internal leakage of working-fluid, e.g. between stages by non-contact sealings, e.g. of labyrinth type using sealing fluid, e.g. steam
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
The invention relates to a novel multifunctional modular sealing system for a turbine expansion unit. The system comprises a rotor shaft, a bearing, a housing, an impeller, a first labyrinth annular seal tooth and a second labyrinth annular seal tooth, wherein the rotor shaft is rotatably supported on the bearing through a rotor shaft extension, the impeller is connected to the end portion of the rotor shaft extension through a locking bolt, and the connection part of the impeller and the rotor shaft extension is in auxiliary sealing through the first labyrinth annular seal tooth and the second labyrinth annular seal tooth successively. The system is characterized in that the housing sleeves the rotor shaft extension, a sealing cavity is formed in the housing, and a sealing module for hermetically isolating the shaft end of the rotor shaft is mounted in the sealing cavity. The multi-functionalization of a turbine expansion machine is realized and the sealing effect is improved. The system is simple in structure and convenient to mount, the manufacturing and maintenance costs are lowered, and the quality is ensured; the system is suitable for applications in various mediums and different working conditions; the aerodynamic performance of the rotor of the expansion machine is kept and maintained, and the efficiency of the equipment and the system is improved; the leakage amount of the medium is integrally reduced, the environment is kept clean, and the service life is long.
Description
Technical field
The invention belongs to turbo-expander technical field, and in particular to a kind of Turbine expansion unit Multifunction modularization
Sealing system.
Background technology
Turbine expansion unit is the energy regeneratings such as used heat waste vapour, differential pressure type energy regenerating is recycled, natural gas liquefaction is gasified
Energy utilization and combustion gas alliance residual heat integrative are using visual plant when generating electricity.As countries in the world make full use of to the energy
Increasingly pay attention to, the requirement of high efficiency, rationalization, densification to energy regenerating generating equipment etc. also more and more higher.
At present, Turbine expansion unit driving cycle system more employs organic Rankine bottoming cycle（Abbreviation ORC）Mode,
According to the difference of Cooling and Heat Source parameter, some use pentafluoropropanes（R245fa）Used as cycle fluid, what is had then uses other working medium
Such as propane, iso-butane, HFC-134a（R-134a）Deng, but all of application is both needed to consider the air-tightness of holding system, reduces
Design and manufacture cost and operating cost, and the problem of clean environment is kept, therefore the requirement to sealing structure is very high.But mesh
Front such device still suffers from following several shortcomings：1. overall structure is more complicated, while control system need to be separately configured, price compares
It is expensive；2. device need to consume a part of cycle fluid as blanket gas, and its leakage rate is larger；3. the adjustment of device and maintenance compared with
Greatly, and part consumptive material needs timing to change；4. sealed chamber volume is larger longer, and the gas of expansion machine rotor is directly affected sometimes
Dynamic design and performance.
In view of above-mentioned prior art, it is necessary to which the sealing structure of existing Turbine expansion unit is reasonably improved.For
This, the applicant has made actively and effectively to explore, and technical scheme described below is defined finally.
The content of the invention
It is an object of the invention to provide a kind of Turbine expansion unit Multifunction modularization sealing system, contributes to mould
Block sealing structure uses raising its feature and sealing, and simple and reasonable, low leakage, is applicable to different working medium
And gas.
The purpose of the present invention is such to what is reached, a kind of Turbine expansion unit Multifunction modularization sealing system,
Including armature spindle, bearing, shell, impeller and the first labyrinth ring packing teeth and the second labyrinth ring packing teeth, described turns
Sub- axle is rotatably supported on bearing by rotor shaft extension, and the end of the rotor shaft extension is fixedly connected with leaf by clamping screw
Wheel, described impeller is passing sequentially through the first labyrinth ring packing teeth and the second labyrinth ring packing with the junction of rotor shaft extension
Tooth carries out auxiliary seal, it is characterised in that：Described shell is set in armature spindle and stretches and positioned at bearing and the second labyrinth annular
Between sealing tooth, the inside of the shell has an annular seal space, and one is provided with described annular seal space for the axle to armature spindle
The seal modules for having held seal isolation to act on.
In a specific embodiment of the present invention, described seal modules include multiple graphite-seal rings and switching method
Orchid, multiple graphite-seal rings are sequentially arranged in rotor shaft extension and between the two structure coordinates for sealing, and the graphite-seal ring passes through
Adapter flange is fixed with described cage connection.
In another specific embodiment of the present invention, the quantity of described graphite-seal ring is four.
In another specific embodiment of the present invention, the quantity of described graphite-seal ring is six.
In another specific embodiment of the present invention, described seal modules are a seal ring of dry gas, and described is dry
Airtight seal ring is arranged in rotor shaft extension and between the two structure coordinates for sealing, and the seal ring of dry gas directly connects with described shell
Connect fixation.
The present invention's and then in a specific embodiment, there is an oil scraper ring in described rotor shaft extension.
The present invention has the advantage that using after said structure：Firstly, since adopting in the rotor shaft extension of armature spindle
Twice labyrinth ring packing teeth as auxiliary seal along with one it is can changing and really serve as seal isolation effect
Seal modules carry out shaft end seal, thus user can need to change different seal modules in time according to different（The sealed mould
Block can be four graphite grazing ring structures or six graphite grazing ring structures or a dry gas seals ring structure）, realize
The multifunction of flat decompressor simultaneously improves sealing effectiveness；Secondly, overall structure is simple, using modularized design, reduces system
Make and maintenance cost, facilitate installation, and can guarantee that quality；3rd, it is adaptable to various different working medium, the application of different operating modes；
4th, small volume is lightweight, keeps and improve the aeroperformance of expansion machine rotor, improves the efficiency of equipment and system；The
Five, the leakage of working medium is reduced on the whole, operating cost is reduced, keep clean environment；6th, long service life.
Description of the drawings
Fig. 1 is the structure diagram of one embodiment of the invention.
Fig. 2 is the structural representation that seal modules of the present invention are four graphite-seal rings.
Fig. 3 is the structural representation that seal modules of the present invention are six graphite-seal rings.
Fig. 4 is the structural representation that seal modules of the present invention are a seal ring of dry gas.
In figure：1. armature spindle, 11. rotor shaft extensions, 111. oil scraper rings；2. bearing；3. shell, 31. annular seal spaces；4. locking screw
Bolt；5. impeller；6. the first labyrinth ring packing teeth；7. the second labyrinth ring packing teeth；8. seal modules, 81. graphite-seal rings,
82. adapter flanges, 83. seal ring of dry gas.
Specific embodiment
Applicant will elaborate by way of example below, but the description to embodiment is not to this
The restriction of bright technical scheme, any only pro forma rather than substantial equivalent transformation according to done by present inventive concept
It is regarded as technical scheme category.
Refer to Fig. 1 and combine Fig. 2, Fig. 3 and Fig. 4, the present invention relates to a kind of flat expansion unit Multifunction modularization
Sealing system, including armature spindle 1, bearing 2, shell 3, the labyrinth ring packing teeth 6 of impeller 5 and first and the second labyrinth annular be close
Envelope tooth 7, described armature spindle 1 is rotatably supported on bearing 2 by rotor shaft extension 11, and the end of the rotor shaft extension 11 passes through
Clamping screw 4 is fixedly connected with impeller 5, and described impeller 5 is passing sequentially through the first labyrinth ring with the junction of rotor shaft extension 11
The shape sealing labyrinth ring packing teeth 7 of tooth 6 and second carries out auxiliary seal, and described shell 3 is set in rotor shaft extension 11 and position
Between the labyrinth ring packing teeth 7 of bearing 2 and second, the inside of the shell 3 has an annular seal space 31, in described annular seal space 31
One is inside provided with for playing the seal modules 8 that seal isolation is acted on to the shaft end of armature spindle 1.
Further, described seal modules 8 include multiple graphite-seal rings 81 and adapter flange 82, multiple graphite grazings
Ring 81 is sequentially arranged in rotor shaft extension 11 and between the two structure coordinates for sealing, the small volume of the graphite-seal ring 81, therefore
Its adapter flange 82 for passing through to play a transition role is connected with described shell 3.When the quantity of described graphite-seal ring 81
For four when, be adapted in most of the cases to the application of general gas flow；When the quantity of described graphite-seal ring 81 is six
When, it is adapted in most of the cases to high request, the application of low gas leakage.
Further, described seal modules 8 are a seal ring of dry gas 83, and described seal ring of dry gas 83 is arranged on rotor
In shaft extension 11 and between the two structure coordinates for sealing, and the volume of the seal ring of dry gas 83 is larger, thus its can directly with it is described
Shell 3 is connected.The dry gas seals ring structure is adapted to high request, the application of low gas leakage.
Here it should be noted that：Described the first labyrinth ring packing teeth 6 and the second labyrinth ring packing teeth 7 is setting
As auxiliary seal when received shipment turns, can suitably reduce taking turns gas pressure in terms of the back of the body from impeller 5, described seal modules 8 exist
Real seal isolation effect is played during equipment operation.Generally because different types of sealing structure and size etc. differ greatly, because
This different types of axle envelope is generally both needed to shaft end（That is shaft extension）Change design, this influences whether the design such as leaf of pneumatic aspect
Wheel, flow control, runner, spiral case etc., workload is big, loaded down with trivial details, and parts species increases etc..The present invention is by armature spindle
Stretch the appropriate design of structure so as to can to the full extent meet the installation and application of multiple types sealing；Multiple types are sealed simultaneously
Carry out modular Optimal improvements so as to can be installed and used in relatively limited space；Select again plus transition adapter flange,
Seal different installation requirements to meet multiple types, make the big part such as decompressor spiral case be designed to standardize, reduce and set
Put, make, the cost of product and management etc..
Claims (6)
1. a kind of Turbine expansion unit Multifunction modularization sealing system, including armature spindle (1), bearing (2), shell (3),
Impeller (5) and the first labyrinth ring packing teeth (6) and the second labyrinth ring packing teeth (7), described armature spindle (1) is by turning
Sub- shaft extension (11) is rotatably supported on bearing (2), and the end of the rotor shaft extension (11) is fixedly connected by clamping screw (4)
There is impeller (5), described impeller (5) is passing sequentially through the first labyrinth ring packing teeth (6) with the junction of rotor shaft extension (11)
Auxiliary seal is carried out with the second labyrinth ring packing teeth (7), it is characterised in that：Described shell (3) is set in rotor shaft extension
(11) on and between bearing (2) and the second labyrinth ring packing teeth (7), the inside of the shell (3) has an annular seal space
(31) one, is provided with described annular seal space (31) for playing the sealed mould that seal isolation is acted on to the shaft end of armature spindle (1)
Block (8).
2. Turbine expansion unit Multifunction modularization sealing system according to claim 1, it is characterised in that described
Seal modules (8) including multiple graphite-seal rings (81) and adapter flange (82), multiple graphite-seal rings (81) are installed successively
In rotor shaft extension (11) and between the two structure coordinates for sealing, the graphite-seal ring (81) by adapter flange (82) with it is described
Shell (3) be connected.
3. Turbine expansion unit Multifunction modularization sealing system according to claim 2, it is characterised in that described
Graphite-seal ring (81) quantity be four.
4. Turbine expansion unit Multifunction modularization sealing system according to claim 2, it is characterised in that described
Graphite-seal ring (81) quantity be six.
5. Turbine expansion unit Multifunction modularization sealing system according to claim 1, it is characterised in that described
Seal modules (8) be a seal ring of dry gas (83), described seal ring of dry gas (83) is in rotor shaft extension (11) and two
Structure coordinates for sealing between person, and the seal ring of dry gas (83) is directly connected with described shell (3).
6. Turbine expansion unit Multifunction modularization sealing system according to claim 1, it is characterised in that described
Rotor shaft extension (11) on have an oil scraper ring (111).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710019340.2A CN106640219A (en) | 2017-01-11 | 2017-01-11 | Novel multifunctional modular sealing system for turbine expansion unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710019340.2A CN106640219A (en) | 2017-01-11 | 2017-01-11 | Novel multifunctional modular sealing system for turbine expansion unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106640219A true CN106640219A (en) | 2017-05-10 |
Family
ID=58842836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710019340.2A Pending CN106640219A (en) | 2017-01-11 | 2017-01-11 | Novel multifunctional modular sealing system for turbine expansion unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106640219A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111188653A (en) * | 2020-03-06 | 2020-05-22 | 上海好米密封科技有限公司 | Gas lubrication dynamic pressure sealing device for miniature high-speed turboexpander |
| CN111188653B (en) * | 2020-03-06 | 2024-07-05 | 上海优赛密封科技有限公司 | Gas lubrication dynamic pressure sealing device for miniature high-speed turbine expander |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11108201A (en) * | 1997-10-07 | 1999-04-20 | Mitsubishi Heavy Ind Ltd | Shaft-sealing device |
| US20020074730A1 (en) * | 2000-12-15 | 2002-06-20 | Mayer Robert Russell | Brush seal for a bearing cavity |
| CN104481620A (en) * | 2014-11-27 | 2015-04-01 | 华中科技大学 | Organic working medium radial inflow turbine power generation device |
| CN104482215A (en) * | 2014-11-12 | 2015-04-01 | 崔正军 | Shaft-end multiple seal of centrifugal compressor |
| CN204344172U (en) * | 2014-12-19 | 2015-05-20 | 青岛科技大学 | A kind of zero leakage organic working medium power engine |
| CN106089435A (en) * | 2016-07-28 | 2016-11-09 | 中国核动力研究设计院 | A kind of compressor system with supercritical carbon dioxide as working medium |
| CN206376901U (en) * | 2017-01-11 | 2017-08-04 | 联优机械(常熟)有限公司 | The novel and multifunctional modularization sealing system of Turbine expansion unit |
-
2017
- 2017-01-11 CN CN201710019340.2A patent/CN106640219A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11108201A (en) * | 1997-10-07 | 1999-04-20 | Mitsubishi Heavy Ind Ltd | Shaft-sealing device |
| US20020074730A1 (en) * | 2000-12-15 | 2002-06-20 | Mayer Robert Russell | Brush seal for a bearing cavity |
| CN104482215A (en) * | 2014-11-12 | 2015-04-01 | 崔正军 | Shaft-end multiple seal of centrifugal compressor |
| CN104481620A (en) * | 2014-11-27 | 2015-04-01 | 华中科技大学 | Organic working medium radial inflow turbine power generation device |
| CN204344172U (en) * | 2014-12-19 | 2015-05-20 | 青岛科技大学 | A kind of zero leakage organic working medium power engine |
| CN106089435A (en) * | 2016-07-28 | 2016-11-09 | 中国核动力研究设计院 | A kind of compressor system with supercritical carbon dioxide as working medium |
| CN206376901U (en) * | 2017-01-11 | 2017-08-04 | 联优机械(常熟)有限公司 | The novel and multifunctional modularization sealing system of Turbine expansion unit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111188653A (en) * | 2020-03-06 | 2020-05-22 | 上海好米密封科技有限公司 | Gas lubrication dynamic pressure sealing device for miniature high-speed turboexpander |
| CN111188653B (en) * | 2020-03-06 | 2024-07-05 | 上海优赛密封科技有限公司 | Gas lubrication dynamic pressure sealing device for miniature high-speed turbine expander |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170510 |