CN201925238U - High-efficiency closed small-flow module stage - Google Patents
High-efficiency closed small-flow module stage Download PDFInfo
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- CN201925238U CN201925238U CN 201120044908 CN201120044908U CN201925238U CN 201925238 U CN201925238 U CN 201925238U CN 201120044908 CN201120044908 CN 201120044908 CN 201120044908 U CN201120044908 U CN 201120044908U CN 201925238 U CN201925238 U CN 201925238U
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- impeller
- stage
- module stage
- vaneless diffuser
- unit
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Abstract
The utility model relates to gas compression equipment, in particular to a high-efficiency closed small-flow module stage, which is applied into a centrifugal compressor and positioned in the compressor. The high-efficiency closed small-flow module stage comprises an impeller, a vaneless diffuser, a bent channel and a backflow device, the impeller is positioned at an inlet of the module stage, the vaneless diffuser is disposed at an outlet of the impeller, the backflow device is positioned at an outlet of the module stage and communicated with the vaneless diffuser by the aid of the bent channel, and the impeller is a two-dimensional impeller. The impeller is convenient in processing, high in geometric line precision and favorable for guaranteeing performance of the stage. Both the radial size and the axial size of the module stage are smaller than those of a like module stage, and accordingly the high-efficiency closed small-flow module stage is favorable for reducing the radial size and the axial size of a unit and reducing manufacturing cost of a product. The high-efficiency closed small-flow module stage leads the structure of the unit to be compact so as to bring convenience for arrangement, improves stability of a rotor, further enhances running stability of the unit, can be used for a single-stage centrifugal compressor and a multi-stage centrifugal compressor, can effectively improve performance of the unit and reduces running cost of the unit.
Description
Technical field
The utility model relates to gas compressing equipment, specifically a kind of efficient enclosed small flux model level that is applied in the centrifugal compressor.
Background technique
In the exploitation of centrifugal compressor, design process, the design of its monotechnics model level is particularly crucial; A new product all will be designed the model level that matches.Before formally being applied to actual product, must the actual performance of model level be detected, promptly determine the actual performance of model level by test.And the both time-consuming great amount of manpower and material resources that spends again of test testing process.Owing to reasons such as reliability and cycle requests, the design method of centrifugal compressor mainly is to utilize the theory of similarity to carry out the modelling design on the engineering; Therefore, in fact the performance index of centrifugal compressor are decided by to lay in the performance of model level.Along with the development of materials science, craft science, computational fluid mechanics and computer hardware, make the efficient model level of development of new, raising centrifugal compressor unit performance, minimizing energy consumption become possibility.Restriction owing to aspect reasons such as technological means of grasping and development abilities in the past, the design efficiency of small flux model level is low, because of it generally is placed in the later stages of compressor, the height of its performance is fairly obvious to the complete machine Effect on Performance, cause compressor performance low, pay attention to operating cost day by day, consider under the condition of unit energy saving the user, make product with the product competition of external similar enterprise in be in absolute inferior position, therefore lose a lot of market shares.
The model utility content
In order to solve above-mentioned deficiency, the purpose of this utility model is to provide a kind of efficient enclosed small flux model level.
The purpose of this utility model is achieved through the following technical solutions:
The utility model is positioned at compressor, comprise impeller, vaneless diffuser, return channel and bend, impeller is positioned at the entry position of model level, is provided with vaneless diffuser in the outlet of impeller, return channel is positioned at the exit position of model level, is connected by bend between described vaneless diffuser and the return channel; Described impeller is the binary impeller.
Wherein: the blade outlet angle of described impeller is 18.3 °; Described vaneless diffuser is tapering type; The outlet diameter of described vaneless diffuser is 1.33 with the diameter of impeller ratio; The vane type line of described return channel is that two sections circular arcs and one section straight line constitute.
Advantage of the present utility model and good effect are:
1. impeller of the present utility model is the binary impeller, and this kind impeller is convenient to processing, and blade geometry molded lines precision height helps guaranteeing the level performance.
2. vaneless diffuser of the present utility model is tapering type, guaranteed air-flow within it portion effective expansion and reduced frictional loss, effectively raise a grade performance.
3. the ratio of vaneless diffuser outlet diameter of the present utility model and impeller diameter is 1.33, make the radial dimension of model level less than with the class model level, be applied on the centrifugal compressor after, the boundary dimension that helps dwindling product, reduce manufacture cost, be convenient to the layout of product.
4. return channel vane type line of the present utility model is that two sections circular arcs and one section straight line constitute, and effectively reduces its inner separation losses, and has further improved the uniformity of model level exit flow.
5. model level of the present utility model can be used for list, multistage centrifugal compressor, can effectively improve the performance of unit, reduces the operating cost of unit.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Wherein: 1 is impeller, and 2 is vaneless diffuser, and 3 is return channel, and 4 is bend, and 5 is the entry position, and 6 is the exit position.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, the utility model is positioned at compressor, comprise impeller 1, vaneless diffuser 2, return channel 3 and bend 4, impeller 1 is positioned at the entry position 5 of model level, outlet at impeller 1 is provided with vaneless diffuser 2, return channel 3 is positioned at the exit position 6 of model level, is connected by bend 4 between described vaneless diffuser 2 and the return channel 3; Described impeller 1 is the binary impeller.The blade outlet angle of impeller 1 is 18.3 °; Vaneless diffuser 2 is tapering type, and the outlet diameter of vaneless diffuser 2 is 1.33 with the diameter ratio of impeller 1; The vane type line of return channel 3 is that two sections circular arcs and one section straight line constitute.
Model level flow coefficient of the present utility model covers 0.0315～0.006, an energy coefficient 0.55, and polytropic efficiency is up to 82%.
Model level of the present utility model can be designed for the centrifugal compressor product of different parameters by modelling.
Claims (5)
1. efficient enclosed small flux model level, be positioned at compressor, it is characterized in that: comprise impeller (1), vaneless diffuser (2), return channel (3) and bend (4), impeller (1) is positioned at the entry position (5) of model level, outlet at impeller (1) is provided with vaneless diffuser (2), return channel (3) is positioned at the exit position (6) of model level, is connected by bend (4) between described vaneless diffuser (2) and the return channel (3); Described impeller (1) is the binary impeller.
2. by the described efficient enclosed small flux model level of claim 1, it is characterized in that: the blade outlet angle of described impeller (1) is 18.3 °.
3. by the described efficient enclosed small flux model level of claim 1, it is characterized in that: described vaneless diffuser (2) is for tapering type.
4. by the described efficient enclosed small flux model level of claim 1, it is characterized in that: the diameter ratio of the outlet diameter of described vaneless diffuser (2) and impeller (1) is 1.33.
5. by the described efficient enclosed small flux model level of claim 1, it is characterized in that: the vane type line of described return channel (3) is that two sections circular arcs and one section straight line constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120044908 CN201925238U (en) | 2011-02-23 | 2011-02-23 | High-efficiency closed small-flow module stage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120044908 CN201925238U (en) | 2011-02-23 | 2011-02-23 | High-efficiency closed small-flow module stage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201925238U true CN201925238U (en) | 2011-08-10 |
Family
ID=44429089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120044908 Expired - Lifetime CN201925238U (en) | 2011-02-23 | 2011-02-23 | High-efficiency closed small-flow module stage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201925238U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343725A (en) * | 2013-07-23 | 2015-02-11 | 沈阳透平机械股份有限公司 | MCL compressor model level and design method thereof |
| CN106870456A (en) * | 2015-12-14 | 2017-06-20 | 沈阳透平机械股份有限公司 | Method for designing based on the theoretical Centrifugal Compressor Bladess diffuser of energy gradient |
| CN106870447A (en) * | 2015-12-14 | 2017-06-20 | 沈阳鼓风机集团股份有限公司 | Pipeline compressor special purpose model level |
| CN106870403A (en) * | 2015-12-14 | 2017-06-20 | 沈阳透平机械股份有限公司 | Vapor compressor Stage |
-
2011
- 2011-02-23 CN CN 201120044908 patent/CN201925238U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104343725A (en) * | 2013-07-23 | 2015-02-11 | 沈阳透平机械股份有限公司 | MCL compressor model level and design method thereof |
| CN106870456A (en) * | 2015-12-14 | 2017-06-20 | 沈阳透平机械股份有限公司 | Method for designing based on the theoretical Centrifugal Compressor Bladess diffuser of energy gradient |
| CN106870447A (en) * | 2015-12-14 | 2017-06-20 | 沈阳鼓风机集团股份有限公司 | Pipeline compressor special purpose model level |
| CN106870403A (en) * | 2015-12-14 | 2017-06-20 | 沈阳透平机械股份有限公司 | Vapor compressor Stage |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: SBW Group Gear Compressor Co., Ltd. Assignor: Shenyang blower group, Limited by Share Ltd|Shenyang turbo machinery, Limited by Share Ltd Contract record no.: 2012210000035 Denomination of utility model: High-efficiency closed small-flow module stage Granted publication date: 20110810 License type: Exclusive License Record date: 20120305 |
|
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: SBW Group Gear Compressor Co., Ltd. Assignor: Shenyang blower group, Limited by Share Ltd|Shenyang turbo machinery, Limited by Share Ltd Contract record no.: 2012210000035 Date of cancellation: 20130929 |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: SBW Group Gear Compressor Co., Ltd. Assignor: Shenyang blower group, Limited by Share Ltd|Shenyang turbo machinery, Limited by Share Ltd Contract record no.: 2013210000126 Denomination of utility model: High-efficiency closed small-flow module stage Granted publication date: 20110810 License type: Exclusive License Record date: 20130929 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110810 |