CN111140341A - Segmented adjustable blade vaned diffuser structure - Google Patents
Segmented adjustable blade vaned diffuser structure Download PDFInfo
- Publication number
- CN111140341A CN111140341A CN201911330298.1A CN201911330298A CN111140341A CN 111140341 A CN111140341 A CN 111140341A CN 201911330298 A CN201911330298 A CN 201911330298A CN 111140341 A CN111140341 A CN 111140341A
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- CN
- China
- Prior art keywords
- guide vane
- vane
- adjustable
- diffuser
- bottom plate
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
- F02B37/12—Control of the pumps
- F02B37/22—Control of the pumps by varying cross-section of exhaust passages or air passages, e.g. by throttling turbine inlets or outlets or by varying effective number of guide conduits
- F02B37/225—Control of the pumps by varying cross-section of exhaust passages or air passages, e.g. by throttling turbine inlets or outlets or by varying effective number of guide conduits air passages
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
- F04D29/444—Bladed diffusers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/46—Fluid-guiding means, e.g. diffusers adjustable
- F04D29/462—Fluid-guiding means, e.g. diffusers adjustable especially adapted for elastic fluid pumps
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention provides a segmented adjustable blade vaned diffuser structure, which consists of an annular bottom plate and segmented guide blades arranged on the bottom plate. The guide vane is composed of a front part and a rear part, wherein the rear section is a fixed section, and the front section is an adjusting section capable of rotating the angle. The structure of the vaned diffuser changes the inlet angle of the vaned diffuser by adjusting the angle of the adjusting section of the guide vane, better adapts to the airflow direction at the outlet of the impeller of the compressor under different working conditions, reduces the flow loss of the airflow entering the vaned diffuser from the outlet of the impeller, effectively improves the flow field, optimizes the flow characteristic in the vaned diffuser, thereby improving the flow range of the centrifugal compressor and improving the efficiency of the compressor.
Description
Technical Field
The invention belongs to the technical field of exhaust gas turbocharging, and particularly relates to a segmented adjustable blade vaned diffuser structure.
Background
In the development of power-equipped technology, a turbocharger is increasingly gaining attention as a main means for improving the power performance of an engine. The boost pressure and efficiency of the compressor in the supercharger are the primary means of improving supercharger performance.
The air flow from the compressor impeller has high speed, and a part of kinetic energy can be subjected to speed reduction and diffusion in a subsequent diffuser to be converted into potential energy so as to further increase the pressure of the air flow. Diffuser devices are generally divided into vaneless diffusers and vaned diffusers. The vaneless diffuser has the characteristics of small diffusion degree, low efficiency, mild characteristic and wide flow range, so that the vaneless diffuser is widely applied to the automobile supercharger. Compared with a vaneless diffuser, the vaned diffuser is added with airflow guide vanes, and under the condition of the same radial size, higher diffusion degree, higher supercharging pressure and higher diffusion efficiency can be obtained.
However, the vane direction of the traditional vane diffuser is generally designed according to the efficient point matching of the compressor, so that the high efficiency of the flow guidance under all working conditions cannot be ensured, but flow loss is caused under some working conditions, so that the flow range of the vane diffuser is narrowed, and the vane diffuser becomes a reason that the vane diffuser is not as widely applied as a vane-free diffuser.
Therefore, there is a need to improve the applicability of the guide vanes of the vaned diffuser in all operating conditions, so that the vaned diffuser has good diffusion characteristics and a wider flow range in all operating conditions, and the supercharger can enjoy the advantages of high supercharging pressure and high efficiency of the vaned diffuser, thereby obtaining better supercharging performance.
Disclosure of Invention
In view of this, the present invention is directed to a segmented variable vane vaned diffuser structure to optimize the performance of the conventional vaned diffuser and improve the flow range and the full condition applicability thereof.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
a diffuser structure with blades and adjustable sectional blades comprises a diffuser body, wherein the diffuser body consists of an annular bottom plate and sectional guide blades uniformly distributed on the annular bottom plate; the segmented guide vane comprises a fixed section guide vane and an adjusting section guide vane, wherein the fixed section guide vane is fixed on the annular bottom plate and is arranged in front and back continuously, and the adjusting section guide vane is positioned on the annular bottom plate and is adjustable in angle.
Furthermore, the adjusting section guide vane is composed of a vane part and a connecting rod part, a pin groove is arranged at the bottom end of the connecting rod part, and the external adjusting mechanism enables the connecting rod part to rotate by acting on the pin groove so as to drive the adjusting section guide vane to adjust the angle.
Furthermore, the contact matching surface of the fixed section guide vane and the adjusting section guide vane is an arc surface.
Furthermore, the length D of the guide vane of the adjusting section is 1/3-2/3 of the whole length L of the sectional guide vane.
Furthermore, the adjustable angle α of the guide vane of the adjusting section ranges from-20 degrees to 20 degrees.
Compared with the traditional vaned diffuser, the segmented adjustable blade vaned diffuser structure changes the inlet angle of the diffuser blade along with the rotation of the adjusting segment guide blade so as to adapt to different-angle airflows flowing out of the outlet of the compressor impeller and reduce the flow loss, thereby ensuring that the diffuser is always in a high-efficiency working state and optimizing the full-working-condition performance of the vaned diffuser and the flow range of the centrifugal compressor.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is an exploded view of an embodiment of the present invention;
FIG. 2 is a schematic view of the vane size and vane rotation angle of the adjustment segment according to an embodiment of the present invention;
description of reference numerals:
1-adjusting section guide vanes; 2-fixed section guide vanes; 3-ring-shaped bottom plate.
Detailed Description
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
A diffuser structure with vanes and adjustable sectional blades is shown in figures 1 and 2 and comprises a diffuser body, wherein the diffuser body consists of an annular bottom plate 3 and sectional guide vanes uniformly distributed on the annular bottom plate;
the sectional guide vane comprises a fixed section guide vane 2 which is continuously arranged from front to back and fixed on the annular bottom plate 3 and an angle-adjustable guide vane which is positioned on the annular bottom plate 3.
The fixed section guide vane 2 is positioned at the rear section of the sectional guide vane, and the adjusting section guide vane 1 is positioned at the front section.
The adjusting section guide vane 1 consists of a vane part and a connecting rod part, and the connecting rod part is inserted into a hole on the annular bottom plate 3 and assembled to form the conventional shape of a sectional adjustable vane diffuser; the bottom end of the connecting rod part of the adjusting section guide vane 1 is provided with a pin groove 4, and the external adjusting mechanism enables the connecting rod part to rotate by acting on the pin groove so as to drive the adjusting section guide vane 1 to adjust the angle.
The core part of the prior VGT variable cross section turbocharging system is the guide vane with an adjustable vortex cross section, the angle of the whole vane can be adjusted, the adjusting structure belongs to the prior art, and the external adjusting mechanism of the scheme of the invention can be realized by selecting the prior art.
The length D of the adjusting section guide vane 1 is 1/3-2/3 of the whole length L of the sectional guide vane.
The adjustable angle α range of the adjusting section guide vane 1 is-20 degrees to 20 degrees.
The working principle of the invention is as follows:
when the supercharger compressor with the blade diffuser works, the rotation angle of the guide vane 1 at the adjusting section is enabled under the action of the external adjusting mechanism according to different angles of airflow flowing out of the outlet of the impeller of the compressor under different working conditions of the compressor, so that the inlet angle of the guide vane of the blade diffuser is always matched with the airflow angle at the outlet of the impeller of the compressor, the airflow entering the diffuser under all working conditions is in a low-loss state, the flow loss is reduced, the diffuser is ensured to be in a high-efficiency working state all the time, and the full-working-condition performance of the blade diffuser and the flow range of the centrifugal compressor.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. The utility model provides an adjustable blade of segmentation has a leaf diffuser structure, includes the diffuser body, its characterized in that: the diffuser body consists of an annular bottom plate (3) and sectional guide vanes uniformly arranged on the annular bottom plate;
the sectional guide vane comprises a fixed section guide vane (2) which is continuously arranged from front to back and fixed on the annular bottom plate (3) and an adjusting section guide vane (1) which is positioned on the annular bottom plate (3) and has an adjustable angle.
2. The segmented adjustable vane vaned diffuser structure of claim 1, wherein: the adjusting section guide vane (1) is composed of a vane part and a connecting rod part, and the connecting rod part is inserted into a hole on the annular bottom plate (3) to be assembled to form the conventional shape of the sectional adjustable vane diffuser with vanes; the bottom end of the connecting rod part of the adjusting section guide vane (1) is provided with a pin groove (4), and the external adjusting mechanism enables the connecting rod part to rotate by acting on the pin groove so as to drive the adjusting section guide vane (1) to adjust the angle.
3. The segmented adjustable vane vaned diffuser structure of claim 2, wherein: the contact matching surface of the fixed section guide vane (2) and the adjusting section guide vane (1) is an arc surface so as to ensure the sealing property of the joint of the front section and the rear section and the rotation flexibility of the adjusting section vane.
4. The segmented adjustable vane vaned diffuser structure of claim 2, wherein: the length D of the adjusting section guide vane (1) is 1/3-2/3 of the whole length L of the sectional guide vane.
5. The segmented adjustable vane vaned diffuser structure of claim 2, wherein the adjustable angle α of the adjustable segmented guide vane (1) is in the range of-20 ° to 20 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911330298.1A CN111140341A (en) | 2019-12-20 | 2019-12-20 | Segmented adjustable blade vaned diffuser structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911330298.1A CN111140341A (en) | 2019-12-20 | 2019-12-20 | Segmented adjustable blade vaned diffuser structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111140341A true CN111140341A (en) | 2020-05-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911330298.1A Pending CN111140341A (en) | 2019-12-20 | 2019-12-20 | Segmented adjustable blade vaned diffuser structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111140341A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111664110A (en) * | 2020-05-25 | 2020-09-15 | 中科澳能(北京)节能技术有限公司 | Compressor inlet guide vane adjusting mechanism and control method thereof |
| CN116221147A (en) * | 2023-05-08 | 2023-06-06 | 远东双诚风机(江苏)有限公司 | Centrifugal fan capable of preventing gas backflow |
| CN116557320A (en) * | 2023-06-05 | 2023-08-08 | 远东双诚风机(江苏)有限公司 | Active silencing type high-speed centrifugal fan |
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|---|---|---|---|---|
| CN1975130A (en) * | 2005-11-29 | 2007-06-06 | 通用电气公司 | Turbofan gas turbine engine with variable fan outlet guide vanes |
| CN201301731Y (en) * | 2008-12-04 | 2009-09-02 | 重庆江增机械有限公司 | Turbo-charger with rotary nozzle ring |
| CN104895839A (en) * | 2015-04-22 | 2015-09-09 | 南京航空航天大学 | Axial-flow compressor stator blade system with adjustable first and second half of segments and working method thereof |
| WO2016120316A1 (en) * | 2015-01-28 | 2016-08-04 | Nuovo Pignone Tecnologie Srl | Device for controlling the flow in a turbomachine, turbomachine and method |
| CN107035722A (en) * | 2017-06-21 | 2017-08-11 | 大连依勒斯涡轮增压技术有限公司 | A kind of centrifugal compressor and its vane diffuser |
| CN107725482A (en) * | 2016-08-10 | 2018-02-23 | 上海电气燃气轮机有限公司 | Improve the sectional-regulated exit guide blade and its governor motion of compressor off design performance |
| CN109424428A (en) * | 2017-08-31 | 2019-03-05 | 通用汽车环球科技运作有限责任公司 | Utilize the turbocharger of variable camber turborotor system |
| CN109630469A (en) * | 2019-01-11 | 2019-04-16 | 中国科学院工程热物理研究所 | A kind of blade tandem diffuser and its control method |
-
2019
- 2019-12-20 CN CN201911330298.1A patent/CN111140341A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1975130A (en) * | 2005-11-29 | 2007-06-06 | 通用电气公司 | Turbofan gas turbine engine with variable fan outlet guide vanes |
| CN201301731Y (en) * | 2008-12-04 | 2009-09-02 | 重庆江增机械有限公司 | Turbo-charger with rotary nozzle ring |
| WO2016120316A1 (en) * | 2015-01-28 | 2016-08-04 | Nuovo Pignone Tecnologie Srl | Device for controlling the flow in a turbomachine, turbomachine and method |
| CN104895839A (en) * | 2015-04-22 | 2015-09-09 | 南京航空航天大学 | Axial-flow compressor stator blade system with adjustable first and second half of segments and working method thereof |
| CN107725482A (en) * | 2016-08-10 | 2018-02-23 | 上海电气燃气轮机有限公司 | Improve the sectional-regulated exit guide blade and its governor motion of compressor off design performance |
| CN107035722A (en) * | 2017-06-21 | 2017-08-11 | 大连依勒斯涡轮增压技术有限公司 | A kind of centrifugal compressor and its vane diffuser |
| CN109424428A (en) * | 2017-08-31 | 2019-03-05 | 通用汽车环球科技运作有限责任公司 | Utilize the turbocharger of variable camber turborotor system |
| CN109630469A (en) * | 2019-01-11 | 2019-04-16 | 中国科学院工程热物理研究所 | A kind of blade tandem diffuser and its control method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111664110A (en) * | 2020-05-25 | 2020-09-15 | 中科澳能(北京)节能技术有限公司 | Compressor inlet guide vane adjusting mechanism and control method thereof |
| CN111664110B (en) * | 2020-05-25 | 2021-09-07 | 中国科学院工程热物理研究所 | Compressor inlet guide vane adjusting mechanism and control method thereof |
| CN116221147A (en) * | 2023-05-08 | 2023-06-06 | 远东双诚风机(江苏)有限公司 | Centrifugal fan capable of preventing gas backflow |
| CN116557320A (en) * | 2023-06-05 | 2023-08-08 | 远东双诚风机(江苏)有限公司 | Active silencing type high-speed centrifugal fan |
| CN116557320B (en) * | 2023-06-05 | 2024-01-02 | 远东双诚风机(江苏)有限公司 | Active silencing type high-speed centrifugal fan |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200512 |
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| RJ01 | Rejection of invention patent application after publication |