CN206942818U - The axle turbomachinery integrated with casing - Google Patents
The axle turbomachinery integrated with casing Download PDFInfo
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- CN206942818U CN206942818U CN201720825370.8U CN201720825370U CN206942818U CN 206942818 U CN206942818 U CN 206942818U CN 201720825370 U CN201720825370 U CN 201720825370U CN 206942818 U CN206942818 U CN 206942818U
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- impeller
- turbomachinery
- casing
- axle
- side structure
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Abstract
The utility model discloses a kind of axle turbomachinery integrated with casing, including：Casing；Impeller casing side structure, is arranged at the side of casing, and its length is more than the length of casing；Impeller wheel backside configuration, it is integral type with impeller casing side structure；And main shaft, the lower end of impeller wheel backside configuration is arranged at, is connected with impeller wheel backside configuration, supports impeller wheel backside configuration.The disclosure in axle by by impeller casing side structure and main shaft being made of one structure, realizing intake and exhaust so that diameter of axle size is no longer limited by impeller size, efficiently solve fluidal texture design and rotor dynamics design between contradiction；And the disclosure is a kind of unitized design, available for various turbomachineries, is with a wide range of applications, meet design specification, processing technology and assembling are easily achieved.
Description
Technical field
The disclosure belongs to fluid machinery, energy source and power equipment and electricity generation system field, and it is integrated with casing to be related to a kind of axle
Turbomachinery.
Background technology
Turbomachinery is broadly divided into two kinds of axial-flow type and radial-flow type (centrifugal or radial inflow).In axial-flow machines, stream
Body flows vertically；In radial-flow type machinery, fluid is mainly along Radial Flow.A kind of diagonal flow type machinery, the stream of fluid also be present
Dynamic direction between it is above-mentioned between the two.The working medium of turbomachinery can be gas, liquid or overcritical working medium, including steam, combustion
Gas, air and other gases or mixed gas, Ru Shui, oil or other liquid.
In recent years, overcritical working medium turbomachinery turns into Research Emphasis, and overcritical working medium density is big, operating pressure is high, is
Performance optimum working efficiency according to channel theory, it is necessary to optimize to blade wheel structure and rotating speed etc. design, and fluidal texture
The result of design often requires that impeller has the diameter of very little and very high rotating speed, corresponding to this, the size of axle, supporting structure
Design can be restricted.On the other hand, the dynamics of rotor-support-foundation system and diameter of axle size and support stiffness are closely related, elongated
Critical speed of shaft and intensity are all very low, it is impossible to meet that transmission requires.Specifically, the turbomachinery of supercritical fluid typically has
There is less impeller diameter, higher rotating speed, especially low discharge radial turbine, impeller outer diameter only has tens of milliseconds, and turns
Speed reaches more than tens thousand of rpms.The drive shaft of turbomachinery of the prior art is coupled or is made of one with wheel hub, diameter of axle chi
It is very little to be less than or equal to profile ID, cause the diameter of axle meticulous, strength and stiffness deficiency, rotational characteristic can not meet to require, thereby result in
Conflict between the fluidal texture design of turbomachinery and the dynamical structure design of rotor-support-foundation system and give, it is necessary to open one's minds
Solve.
Utility model content
(1) technical problems to be solved
Present disclose provides a kind of axle turbomachinery integrated with casing, at least partly to solve skill set forth above
Art problem.
(2) technical scheme
According to an aspect of this disclosure, there is provided a kind of axle turbomachinery integrated with casing, including：Casing 600；
Impeller casing side structure 110, is arranged at the side of casing 600, and its length is more than the length of casing 600；Impeller wheel backside configuration
120, it is integral type with impeller casing side structure 110；And main shaft 700, the lower end of impeller wheel backside configuration 120 is arranged at, with
Impeller wheel backside configuration 120 is connected, supporting impeller wheel backside configuration 120.
In some embodiments of the present disclosure, the axle turbomachinery integrated with casing also includes：Clutch shaft bearing 210, if
The left end of impeller casing side structure 110 is placed in, supporting impeller casing side structure 110 exceedes the prolongation of casing 600；And the
Two bearings 220, the lower end of main shaft 700 is arranged at, for supporting spindle 700.
In some embodiments of the present disclosure, the axle turbomachinery integrated with casing also includes：Admission line 500, it is
Static structures, it is connected with casing 600；Blade passage 800, it is arranged at impeller casing side structure 110 and impeller wheel backside configuration
Space between 120, blade passage 800 are connected with the inlet end of admission line 500；And sealing structure 300, it is arranged at air inlet
Between pipeline 500 and impeller casing side structure 110, gas is prevented to leak.
In some embodiments of the present disclosure, the axle turbomachinery integrated with casing also includes：Impeller end cap 400, if
It is placed in wheel nose.
In some embodiments of the present disclosure, the axle turbomachinery integrated with casing be active turbomachinery or from
Dynamic formula turbomachinery.
In some embodiments of the present disclosure, active turbomachinery includes：Steam turbine, expanding machine, turbine；Slave mode is saturating
Flat machinery includes：Compressor, pump.
In some embodiments of the present disclosure, the axle turbomachinery integrated with casing is the turbine that runner is arranged symmetrically
Tool or mover be leaning closely against with driven machine together with the turbomachinery arranged.
In some embodiments of the present disclosure, mover be leaning closely against with driven machine together with the turbomachinery arranged include：
Compressor-expander is back-to-back, compressor-turbine is back-to-back.
In some embodiments of the present disclosure, impeller casing side structure 110 is split-type structural, and the split-type structural includes
Two parts, a part are used as impeller casing, and described two parts are processed as axle, then connect shape by another part respectively
Into impeller casing side structure 110.
In some embodiments of the present disclosure, the part as impeller casing and the part as axle in the following ways in
One or more be attached：Welding, pin, buckle teeth or bolt.
(3) beneficial effect
It can be seen from the above technical proposal that the turbomachinery that the axle of disclosure offer is integrated with casing, has following
Beneficial effect：
By casing side and main shaft being made of one structure, intake and exhaust are realized in axle, so that diameter of axle size is no longer by leaf
The limitation of size is taken turns, efficiently solves the contradiction between fluidal texture design and rotor dynamics design；And the disclosure is a kind of
Unitized design, available for various turbomachineries, it is with a wide range of applications, meets design specification, processing technology and dress
With being easily achieved.
Brief description of the drawings
Fig. 1 is the structural representation according to the embodiment of the present disclosure axle turbomachinery integrated with casing.
Fig. 2 is that rotor-support-foundation system is pressed using the enclosed impeller centrifugation of common two fulcrum types support pattern arrangement in the prior art
Contracting machine.
Fig. 3 is the enclosed impeller centrifugal compressor that rotor-support-foundation system uses cantilevered arrangement in the prior art.
【Symbol description】
110- impeller casing side structures；120- impeller wheel backside configurations；
210- clutch shaft bearings；220- second bearings；
300- sealing structures；400- impeller end caps；
500- admission lines；600- casings；
700- main shafts；800- blade passages.
Embodiment
The axle turbomachinery integrated with casing that the disclosure provides is by casing side and main shaft being made of one structure, in axle
Intake and exhaust are inside realized, so that diameter of axle size is no longer limited by impeller size, efficiently solve fluidal texture design and rotor
Contradiction between dynamics Design.
For the purpose, technical scheme and advantage of the disclosure are more clearly understood, below in conjunction with specific embodiment, and reference
Accompanying drawing, the disclosure is further described.
Present disclose provides a kind of axle turbomachinery integrated with casing.Fig. 1 is according to embodiment of the present disclosure axle and machine
The structural representation of the turbomachinery of casket integration, as shown in figure 1, the turbomachinery that disclosure axle is integrated with casing, including：
Casing 600；Impeller casing side structure 110, is arranged at the side of casing 600, and its length is more than the length of casing 600；First axle
210 are held, is arranged at the left end of impeller casing side structure 110, supporting impeller casing side structure 110 exceedes the extension of casing 600
Point；Impeller wheel backside configuration 120, it is integral type with impeller casing side structure 110；Main shaft 700, it is arranged at impeller wheel backside configuration
120 lower end, it is connected with impeller wheel backside configuration 120, supporting impeller wheel backside configuration 120；Second bearing 220, is arranged at
The lower end of main shaft 700, for supporting spindle 700；Impeller end cap 400, is arranged at wheel nose；Admission line 500, it is static knot
Structure, it is connected with casing 600；Blade passage 800, it is arranged between impeller casing side structure 110 and impeller wheel backside configuration 120
Space, blade passage 800 is connected with the inlet end of admission line 500；And sealing structure 300, it is arranged at admission line 500
Between impeller casing side structure 110, gas is prevented to leak.
The each several part of the turbomachinery integrated with casing to disclosure axle is specifically introduced below.
The turbomachinery is enclosed impeller centrifugal compressor in the present embodiment, and its blade passage 800 is a kind of closed
Structure, i.e. impeller wheel backside configuration 120 and impeller casing side structure 110 are integral type；
Turbine casket side structure 110 outwards extends in the present embodiment, and prolongation supports by clutch shaft bearing 201, so that
Impeller casing side structure 110 uses as axle.
Main shaft 700 is arranged at impeller back, positioned at the lower end of impeller wheel backside configuration 120, with impeller wheel backside configuration 120
It is connected, is supported by second bearing 220.
Below by the turbomachinery integrated with casing of the axle in the present embodiment and the knot of turbomachinery of the prior art
Structure is contrasted, and so as to improvement of the prominent disclosure in structure, and illustrates beneficial effect caused by the improvement in the structure.
Fig. 2 is that rotor-support-foundation system is pressed using the enclosed impeller centrifugation of common two fulcrum types support pattern arrangement in the prior art
Contracting machine.As shown in Fig. 2 the enclosed impeller centrifugal compressor arranged using common two fulcrum types support pattern, including：Casing
600；Impeller casing side structure 110, is arranged at the side of casing 600, and its length is less than the length of casing 600；Admission line
500, it is static structures, is connected with casing 600；Impeller wheel backside configuration 120, is connected with main shaft 700；Main shaft 700, set
In the lower end of impeller wheel backside configuration 120, it is connected with impeller wheel backside configuration 120, supporting impeller wheel backside configuration 120；The
Two bearings 220, it is arranged at the right side of main shaft 700, supporting spindle 700；Blade passage 800, be arranged at impeller casing side structure 110 with
Space between impeller wheel backside configuration 120；And sealing structure 300, it is arranged between main shaft and casing, prevents gas from letting out
Leakage.
The rotor-support-foundation system of the enclosed impeller centrifugal compressor uses the arrangement of common two fulcrum type supporting, due to master
The external diameter of axle 700 is smaller than the hub diameter (profile ID) of impeller, therefore the most thin position of main shaft 701 turns into weak ring
Section, strength and stiffness are too low, and rotational characteristic can not meet to require.
And the disclosure breaches the limitation of hub diameter (profile ID), outside axle by substituting interior axle using casing side as axle
Footpath can overstriking as needed, rigidity and intensity substantially increases, and critical speed greatly improves, and solves pneumatic structure design and turns
Contradiction between subdynamics structure design.
Fig. 3 is the enclosed impeller centrifugal compressor that rotor-support-foundation system uses cantilevered arrangement in the prior art.Such as Fig. 3
It is shown, the enclosed impeller centrifugal compressor of cantilevered arrangement, including：Casing 600；Impeller casing side structure 110, set
In the side of casing 600, its length is less than the length of casing 600；Main shaft 700, it is connected under impeller wheel backside configuration 120
End, supporting impeller wheel backside configuration 120；Second bearing 220, for supporting spindle 700；And blade passage 800, it is arranged at leaf
Take turns the space between casing side structure 110 and impeller wheel backside configuration 120.
The main shaft of the enclosed impeller centrifugal compressor of the cantilevered arrangement is only at impeller back, although the diameter of axle can be with
Appropriate overstriking, but the vibration characteristics of cantilever structure is not so good as two fulcrum types, especially when impeller is heavier, vibration characteristics becomes
Difference, it is unfavorable for the design of turbomachinery.
And cantilever-designed is successfully changed to by the disclosure in the case where material change does not occur for blade wheel structure and runner
Two fulcrum types design, and the arrangement of supporting structure and the selection of bearing type is more facilitated, and the rigidity increase of rotor-support-foundation system, rotate
The scope increase of characteristic regulation, is more beneficial for overall construction design.
It should be noted that embodiment illustrated in fig. 1 is simply with slave mode turbomachinery, exemplified by such as compressor, pump, to axle
Be illustrated with casing integrated design, similarly, the disclosure can be equally used for active turbomachinery include steam turbine,
Expanding machine, turbine etc., at this moment, axle are identical with Fig. 1 structure with casing integrated design, and simply working medium flow direction in axle on the contrary, enter
Gas becomes to be vented in axle；In addition, the disclosure is equally applicable to the turbomachinery that runner is arranged symmetrically, or for mover with it is driven
Machine is leaning closely against arrangement together, as compressor-expander is back-to-back, compressor-turbine back-to-back etc., at this moment both ends
Casing side can make axle-casing integral structure, can be effectively improved the dynamics of rotor.
Supplementary notes are additionally needed, the casing side of the disclosure can also make split-type structural, i.e., as turbine
The part of casket and part as axle process respectively, then using the part as impeller casing and the part as axle using welding
Or the mode such as pin, buckle teeth, bolt connects.
In summary, present disclose provides the axle turbomachinery integrated with casing, casing side is made of one with main shaft
Change structure, intake and exhaust are realized in axle, so that diameter of axle size is no longer limited by impeller size, efficiently solve fluidal texture
Contradiction between design and rotor dynamics design；And the disclosure is a kind of unitized design, available for various turbomachineries,
It is with a wide range of applications, meets design specification, processing technology and assembling is easily achieved.
Similarly, it will be appreciated that in order to simplify the disclosure and help to understand one or more of each open aspect,
Above in the description to the exemplary embodiment of the disclosure, each feature of the disclosure is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the method for the disclosure should be construed to reflect following intention：I.e. required guarantor
The disclosure of shield requires features more more than the feature being expressly recited in each claim.More precisely, such as right
As claim reflects, open aspect is all features less than single embodiment disclosed above.Therefore, it then follows tool
Thus claims of body embodiment are expressly incorporated in the embodiment, wherein the conduct of each claim in itself
The separate embodiments of the disclosure.
It should also be noted that, the direction term mentioned in embodiment, for example, " on ", " under ", "front", "rear", " left side ",
" right side " etc., only it is the direction of refer to the attached drawing, is not used for limiting the protection domain of the disclosure.
The disclosure is limited it should be noted that above-described embodiment illustrates rather than to the disclosure, and ability
Field technique personnel can design alternative embodiment without departing from the scope of the appended claims.In the claims,
Any reference symbol between bracket should not be configured to limitations on claims.Word " comprising " does not exclude the presence of not
Element or step listed in the claims.Word "a" or "an" before element does not exclude the presence of multiple such
Element.
Particular embodiments described above, the purpose, technical scheme and beneficial effect of the disclosure are carried out further in detail
Describe in detail bright, should be understood that the specific embodiment that the foregoing is only the disclosure, be not limited to the disclosure, it is all
Within the spirit and principle of the disclosure, any modification, equivalent substitution and improvements done etc., the guarantor of the disclosure should be included in
Within the scope of shield.
Claims (10)
1. a kind of axle turbomachinery integrated with casing, including：
Casing (600)；
Impeller casing side structure (110), is arranged at the side of casing (600), and its length is more than the length of casing (600)；
Impeller wheel backside configuration (120), it is integral type with impeller casing side structure (110)；And
Main shaft (700), the lower end of impeller wheel backside configuration (120) is arranged at, be connected with impeller wheel backside configuration (120), propped up
Hold impeller wheel backside configuration (120).
2. turbomachinery according to claim 1, in addition to：
Clutch shaft bearing (210), is arranged at the left end of impeller casing side structure (110), and supporting impeller casing side structure (110) exceedes
The prolongation of casing (600)；And
Second bearing (220), the lower end of main shaft (700) is arranged at, for supporting spindle (700).
3. turbomachinery according to claim 2, in addition to：
Admission line (500), it is static structures, is connected with casing (600)；
Blade passage (800), the space being arranged between impeller casing side structure (110) and impeller wheel backside configuration (120), leaf
Piece runner (800) is connected with the inlet end of admission line (500)；And
Sealing structure (300), it is arranged between admission line (500) and impeller casing side structure (110), prevents gas from leaking.
4. turbomachinery according to claim 3, in addition to：
Impeller end cap (400), is arranged at wheel nose.
5. turbomachinery according to claim 1, the turbomachinery is active turbomachinery or slave mode turbine
Machinery.
6. turbomachinery according to claim 5, wherein,
The active turbomachinery includes：Steam turbine, expanding machine, turbine；
The slave mode turbomachinery includes：Compressor, pump.
7. turbomachinery according to claim 1, the turbomachinery is the turbomachinery or master that runner is arranged symmetrically
Motivation be leaning closely against with driven machine together with the turbomachinery arranged.
8. turbomachinery according to claim 7, wherein, the mover be leaning closely against with driven machine together with arrange it is saturating
Flat machinery includes：Compressor-expander is back-to-back, compressor-turbine is back-to-back.
9. according to the turbomachinery described in any one of claim 1 to 8, wherein, the impeller casing side structure (110) is split
Formula structure, the split-type structural include two parts, and a part is used as impeller casing, and another part is as axle, by described two parts
Process respectively, then connect to form impeller casing side structure (110).
10. turbomachinery according to claim 9, wherein, the part as impeller casing and the part as axle
One or more in the following ways are attached：Welding, pin, buckle teeth or bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720825370.8U CN206942818U (en) | 2017-07-07 | 2017-07-07 | The axle turbomachinery integrated with casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720825370.8U CN206942818U (en) | 2017-07-07 | 2017-07-07 | The axle turbomachinery integrated with casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206942818U true CN206942818U (en) | 2018-01-30 |
Family
ID=61369200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720825370.8U Active CN206942818U (en) | 2017-07-07 | 2017-07-07 | The axle turbomachinery integrated with casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206942818U (en) |
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2017
- 2017-07-07 CN CN201720825370.8U patent/CN206942818U/en active Active
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20181228 Address after: 053000 North New District of Hengshui Development Zone, Hebei Province, West Side of Zhenhua New Road Patentee after: Hengshui Keheng Power Equipment Co., Ltd. Address before: 100190 North Fourth Ring Road, Haidian District, Beijing, 11 Patentee before: Institute of Engineering Thermophysics, Chinese Academy of Sciences |