CN206376901U - The novel and multifunctional modularization sealing system of Turbine expansion unit - Google Patents
The novel and multifunctional modularization sealing system of Turbine expansion unit Download PDFInfo
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- CN206376901U CN206376901U CN201720030864.7U CN201720030864U CN206376901U CN 206376901 U CN206376901 U CN 206376901U CN 201720030864 U CN201720030864 U CN 201720030864U CN 206376901 U CN206376901 U CN 206376901U
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- shaft extension
- rotor shaft
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- expansion unit
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- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Abstract
A kind of novel and multifunctional modularization sealing system of Turbine expansion unit, including armature spindle, bearing, shell, impeller and first, second labyrinth ring packing teeth, armature spindle is rotatably supported on bearing by rotor shaft extension, the end of rotor shaft extension is connected with impeller by clamping screw, impeller passes sequentially through first, second labyrinth ring packing teeth in the junction with rotor shaft extension and carries out auxiliary seal, feature：Shell is set in armature spindle and stretched, and the inside of the shell has an annular seal space, and the seal modules for being used to play the shaft end of armature spindle seal isolation are provided with annular seal space.Realize the multifunction of turbo-expander and improve sealing effectiveness；It is simple in construction, manufacture and maintenance cost are reduced, it is convenient to install, it is ensured that quality；Suitable for the application of a variety of different working medium, different operating modes；The aeroperformance of expansion machine rotor is kept and improved, the efficiency of equipment and system is improved；The leakage of working medium is reduced on the whole, keeps clean environment；Long lifespan.
Description
Technical field
The utility model belongs to turbo-expander technical field, and in particular to a kind of novel and multifunctional mould of Turbine expansion unit
Block 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 utilize visual plant when generating electricity.As countries in the world make full use of to the energy
Increasingly pay attention to, the also more and more higher of the requirement to high efficiency, rationalization, the densification of energy regenerating generating equipment etc..
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）As cycle fluid, what is had then uses other working medium
Such as propane, iso-butane, HFC-134a（R-134a）Deng, but all applications are both needed to consider the air-tightness of holding system, reduction
Design and manufacture cost and operating cost, and the problem of holding clean environment, therefore the requirement to sealing structure is very high.But mesh
Preceding 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, 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, 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 to existing Turbine expansion unit is reasonably improved.For
This, the applicant has made actively and effectively to explore, and technical scheme described below is formd finally.
The content of the invention
The purpose of this utility model is to provide a kind of Turbine expansion unit novel and multifunctional modularization sealing system, helped
Raising its feature and sealing is used in modularization sealing structure, and simple and reasonable, low leakage, is applicable to difference
Working medium and gas.
The purpose of this utility model is such to what is reached, a kind of novel and multifunctional modularization sealing system of Turbine expansion unit
System, including armature spindle, bearing, shell, impeller and the first labyrinth ring packing teeth and the second labyrinth ring packing teeth, it is described
Armature spindle is rotatably supported on bearing by rotor shaft extension, and the end of the rotor shaft extension is fixedly connected with by clamping screw
Impeller, described impeller passes sequentially through the first labyrinth ring packing teeth in the junction with rotor shaft extension and the second labyrinth annular is close
Seal tooth and carry out auxiliary seal, it is characterised in that：Described shell is set in armature spindle and stretches and be located at bearing and the second labyrinth ring
Between shape sealing tooth, the inside of the shell has an annular seal space, and one is provided with described annular seal space is used for armature spindle
Play the seal modules of seal isolation in shaft end.
In a specific embodiment of the present utility model, described seal modules include multiple graphite-seal rings and turned
Acting flange, multiple graphite-seal rings are sequentially arranged in rotor shaft extension and structure coordinates for sealing between the two, the graphite-seal ring
Fixed by adapter flange with described cage connection.
In another specific embodiment of the present utility model, the quantity of described graphite-seal ring is four.
In another specific embodiment of the present utility model, the quantity of described graphite-seal ring is six.
In another specific embodiment of the present utility model, described seal modules are a seal ring of dry gas, described
Seal ring of dry gas be arranged in rotor shaft extension and structure coordinates for sealing between the two, the seal ring of dry gas directly with it is described outer
Shell is connected.
In an of the present utility model and then specific embodiment, there is an oil scraper ring in described rotor shaft extension.
The utility model is used after said structure, is had the advantage that：Firstly, since in the rotor shaft extension of armature spindle
Twice labyrinth ring packing teeth is employed as auxiliary seal along with one can changing and real seal isolation of serving as is made
Seal modules carry out shaft end seal, thus user can change different seal modules in time according to the need for difference（This is close
It can be four graphite grazing ring structures or six graphite grazing ring structures or a dry gas seals ring structure to seal module）, realize
The multifunction of turbo-expander simultaneously improves sealing effectiveness；Secondly, overall structure is simple, using modularized design, reduction
Manufacture and maintenance cost, facilitate installation, and can guarantee that quality；3rd, it is adaptable to a variety of different working medium, different operating mode should
With；4th, small volume is lightweight, keeps and improve the aeroperformance of expansion machine rotor, improves the effect of equipment and system
Rate；5th, the leakage of working medium is reduced on the whole, operating cost is reduced, and keeps clean environment；6th, service life is long.
Brief description of the drawings
Fig. 1 is the structure diagram of the embodiment of the utility model one.
Fig. 2 is the structural representation that seal modules described in the utility model are four graphite-seal rings.
Fig. 3 is the structural representation that seal modules described in the utility model are six graphite-seal rings.
Fig. 4 is the structural representation that seal modules described in the utility model 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 flange, 83. seal ring of dry gas.
Embodiment
Applicant will elaborate by way of examples below, but the description to embodiment is not to this reality
It is any according to only formal rather than substantial made by the utility model design with the limitation of new technique scheme
Equivalent transformation is regarded as the technical solution of the utility model category.
Refer to Fig. 1 and combine Fig. 2, Fig. 3 and Fig. 4, the utility model is related to a kind of flat expansion novel and multifunctional mould of unit
Block 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 ring
Shape seals tooth 7, and described armature spindle 1 is rotatably supported on bearing 2 by rotor shaft extension 11, the end of the rotor shaft extension 11
Impeller 5 is fixedly connected with by clamping screw 4, described impeller 5 passes sequentially through the first fan in the junction with rotor shaft extension 11
The labyrinth ring packing teeth 7 of palace ring packing teeth 6 and second carries out auxiliary seal, and described shell 3 is set in rotor shaft extension 11
And 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 sealing
One seal modules 8 for being used to play the shaft end of armature spindle 1 seal isolation are installed in chamber 31.
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 structure coordinates for sealing between the two, the small volume of the graphite-seal ring 81, therefore
It is connected by the adapter flange 82 played a transition role with described shell 3.When the quantity of described graphite-seal ring 81
For four when, be adapted to application in most cases to general gas flow；When the quantity of described graphite-seal ring 81 is six
When, it is adapted to application in most cases to high request, 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
Structure coordinates for sealing in shaft extension 11 and between the two, 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 the application to high request, low gas leakage.
Herein it should be noted that：Described the first labyrinth ring packing teeth 6 and the second labyrinth ring packing teeth 7 is being set
As auxiliary seal when received shipment turns, can suitably reduce from impeller 5 take turns the back of the body in terms of gas pressure, 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 are big, cumbersome, and parts species increases etc..The utility model passes through to turning
The reasonable design of sub- shaft extension structure, multiple types can be met to the full extent and sealedly installs and applies；Simultaneously to multiple types
Sealing carries out modular Optimal improvements, can be installed and used in relatively limited space；Select again plus transition switching
Flange, different installation requirements are sealed to meet multiple types, make being designed to standardize for the big part such as expanding machine spiral case, reduction
Set, make, the cost of product and management etc..
Claims (6)
1. a kind of novel and multifunctional modularization sealing system of Turbine expansion unit, 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) passes sequentially through the first labyrinth ring packing teeth (6) in the junction with 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 positioned between bearing (2) and the second labyrinth ring packing teeth (7), the inside of the shell (3) has an annular seal space
(31), a sealed mould for being used to play the shaft end of armature spindle (1) seal isolation is installed in described annular seal space (31)
Block (8).
2. the novel and multifunctional modularization sealing system of Turbine expansion unit according to claim 1, it is characterised in that described
Seal modules (8) include multiple graphite-seal rings (81) and adapter flange (82), multiple graphite-seal rings (81) install successively
Structure coordinates for sealing in rotor shaft extension (11) and between the two, the graphite-seal ring (81) by adapter flange (82) with it is described
Shell (3) be connected.
3. the novel and multifunctional modularization sealing system of Turbine expansion unit according to claim 2, it is characterised in that described
Graphite-seal ring (81) quantity be four.
4. the novel and multifunctional modularization sealing system of Turbine expansion unit according to claim 2, it is characterised in that described
Graphite-seal ring (81) quantity be six.
5. the novel and multifunctional modularization sealing system of Turbine expansion unit 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 arranged 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. the novel and multifunctional modularization sealing system of Turbine expansion unit 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 |
|---|---|---|---|
| CN201720030864.7U CN206376901U (en) | 2017-01-11 | 2017-01-11 | The novel and multifunctional modularization sealing system of Turbine expansion unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720030864.7U CN206376901U (en) | 2017-01-11 | 2017-01-11 | The novel and multifunctional modularization sealing system of Turbine expansion unit |
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| CN206376901U true CN206376901U (en) | 2017-08-04 |
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| CN201720030864.7U Active CN206376901U (en) | 2017-01-11 | 2017-01-11 | The novel and multifunctional modularization sealing system of Turbine expansion unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640219A (en) * | 2017-01-11 | 2017-05-10 | 联优机械(常熟)有限公司 | Novel multifunctional modular sealing system for turbine expansion unit |
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2017
- 2017-01-11 CN CN201720030864.7U patent/CN206376901U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640219A (en) * | 2017-01-11 | 2017-05-10 | 联优机械(常熟)有限公司 | Novel multifunctional modular sealing system for turbine expansion unit |
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