CN201176893Y - Supercharger structure of compressor - Google Patents
Supercharger structure of compressor Download PDFInfo
- Publication number
- CN201176893Y CN201176893Y CNU2008200052595U CN200820005259U CN201176893Y CN 201176893 Y CN201176893 Y CN 201176893Y CN U2008200052595 U CNU2008200052595 U CN U2008200052595U CN 200820005259 U CN200820005259 U CN 200820005259U CN 201176893 Y CN201176893 Y CN 201176893Y
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- China
- Prior art keywords
- compressor
- guide sleeve
- air guide
- compressor impeller
- air
- Prior art date
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- Expired - Fee Related
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- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The utility model discloses a supercharger structure for an air compressor, comprising a shell, wherein a compressor impeller and an air guide sleeve are arranged in the shell; one side of the shell is connected with a turbine casing; a turbine wheel impeller linked with a turbine is arranged in the turbine casing; the turbine wheel impeller is connected with the compressor impeller; the air guide sleeve is positioned outside the compressor impeller; and a junction part of the air guide sleeve and the middle part of the compressor impeller is provided with a return tank. The supercharger structure for the air compressor has the advantages of low cost and wide applicability, can effectively solve the surging problem of a supercharged natural gas engine, and can be widely applied to both various types of natural gas engines and the industry for manufacturing various types of diesel engines.
Description
Technical field
The utility model relates to a kind of supercharger structure of gas compressor, relates in particular to a kind of natural gas engine special supercharger.
Background technique
At present, the most of charge inter cooling technology that adopts of domestic high-power natural gas engine, its fuel control mode adopts single-point discharge, pre-mixed charge more.The advantage of this technology is air and fuel mix is even, cylinder uniformity is good, row's temperature is low, discharging is low.But adopt the pre-mixed charge mode, rock gas accounts for 7%～10% of mixed gas total volume, and the natural gas engine valve overlap is little simultaneously, causes the natural gas engine charging efficiency to be lower than diesel engine, and air mass flow is restricted, and power reduces.For increasing engine power density, generally adopt big pressure ratio pressurized machine, to increase air input of engine by air, improve engine power.Natural gas engine pressurized machine operating conditions is compared with diesel engine, under the identical situation of pressure ratio, air mass flow is corresponding wants little by 10%, causes the pressurized machine operating point near surge line, make motor occur turbocharger surge, engine power decline, badly damaged pressurized machine and motor easily.
Summary of the invention
Technical problem to be solved in the utility model is the defective that overcomes prior art, provide a kind of simple in structure, cost is low, wide adaptability, can eliminate the supercharger structure of the gas compressor of natural gas engine turbocharger surge phenomenon.
For solving the problems of the technologies described above, the utility model provides a kind of supercharger structure of gas compressor, comprise housing, in described housing, be provided with compressor impeller and air guide sleeve, side at described housing is connected with turbine case, in described turbine case, be provided with turbine wheel with the turbine interlock, described turbine wheel and described compressor impeller link, described air guide sleeve is positioned at the outside of described compressor impeller, offers back flash at described air guide sleeve and connecting part, described compressor impeller middle part.
Described back flash is communicated with the front end of described impeller and described air guide sleeve, will reflux a part before the gas compressor wind scooper, changes the flow direction of air at blade surface.In the same supercharger pressure of maintenance, strengthen the air mass flow of gas compressor indirectly, the supercharger air compressor operation curve is moved to right, make supercharger air compressor roadability curve avoid surge line, thereby effectively avoid the natural gas engine turbocharger surge.
Below described housing, also be provided with exhaust gas by-pass valve.
Owing to adopt above-mentioned technological scheme, the utlity model has following beneficial effect:
1, simple in structure;
2, cost is low;
3, wide adaptability;
4, eliminate natural gas engine turbocharger surge phenomenon, improve engine performance.
Description of drawings
Fig. 1 is the sectional view of the supercharger structure of the utility model gas compressor.
Mark the following drawings mark thereon in conjunction with the accompanying drawings:
The 1-housing; The 2-back flash; The 3-compressor impeller; The 4-air guide sleeve; The 5-exhaust gas by-pass valve; The 6-turbine case; The 7-turbine wheel.
Embodiment
Further specify embodiment of the present utility model below in conjunction with accompanying drawing.
As shown in Figure 1, the supercharger structure of the utility model gas compressor, comprise housing 1, in housing 1, be provided with compressor impeller 3 and air guide sleeve 4, side at housing 1 is connected with turbine case 6, is provided with the turbine wheel 7 that links with turbine in turbine case 6, and turbine wheel 7 links with compressor impeller 3, air guide sleeve 4 is positioned at the outside of compressor impeller 3, is provided with exhaust gas by-pass valve 5 below housing 1.Offer the suitable back flash of width 2 at air guide sleeve 4 with connecting part, compressor impeller 3 middle part.
Why centrifugal-flow compressor can produce surge, and the underlying cause is actual air flow less than design discharge, cause that air-flow separates in compressor impeller 3 due to.The utility model has designed the pressurized machine that a kind of gas compressor has back flash, drive back flash at supercharger air compressor air guide sleeve 4 with compressor impeller 3 junction points, make and reflux a part of through this back flash 2 through the air after compressor impeller 3 compressions, strengthen the pressurized machine air mass flow indirectly, the supercharger air compressor operation curve is moved to right, avoid surge line, thereby effectively avoid the natural gas engine turbocharger surge.
It should be noted that: above embodiment is only unrestricted in order to explanation the utility model, the utility model also is not limited in above-mentioned giving an example, all do not break away from the technological scheme and the improvement thereof of spirit and scope of the present utility model, and it all should be encompassed in the claim scope of the present utility model.
Claims (3)
1, a kind of supercharger structure of gas compressor, comprise housing, in described housing, be provided with compressor impeller and air guide sleeve, side at described housing is connected with turbine case, in described turbine case, be provided with turbine wheel with the turbine interlock, described turbine wheel and described compressor impeller link, and described air guide sleeve is positioned at the outside of described compressor impeller, it is characterized in that: offer back flash at described air guide sleeve and connecting part, described compressor impeller middle part.
2, the supercharger structure of gas compressor according to claim 1 is characterized in that: described back flash is communicated with the front end of described compressor impeller and described air guide sleeve.
3, the supercharger structure of gas compressor according to claim 1 and 2 is characterized in that: also be provided with exhaust gas by-pass valve below described housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200052595U CN201176893Y (en) | 2008-04-11 | 2008-04-11 | Supercharger structure of compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200052595U CN201176893Y (en) | 2008-04-11 | 2008-04-11 | Supercharger structure of compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201176893Y true CN201176893Y (en) | 2009-01-07 |
Family
ID=40216912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200052595U Expired - Fee Related CN201176893Y (en) | 2008-04-11 | 2008-04-11 | Supercharger structure of compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201176893Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103161766A (en) * | 2013-03-04 | 2013-06-19 | 优华劳斯汽车系统（上海）有限公司 | Air compressor of supercharged engine |
| CN103398095A (en) * | 2013-07-02 | 2013-11-20 | 广西玉柴机器股份有限公司 | Thrust bearing and engine supercharger having the same |
| CN104395582A (en) * | 2012-07-26 | 2015-03-04 | 博格华纳公司 | Compressor cover with circumferential groove |
| CN104895806A (en) * | 2015-04-22 | 2015-09-09 | 上海理工大学 | Centripetal type compressor |
| CN111577446A (en) * | 2020-06-08 | 2020-08-25 | 常州环能涡轮动力股份有限公司 | Turbocharger |
| CN112343715A (en) * | 2020-09-22 | 2021-02-09 | 沪东中华造船(集团)有限公司 | Air pressurization system for natural gas burning tower of LNG ship |
-
2008
- 2008-04-11 CN CNU2008200052595U patent/CN201176893Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104395582A (en) * | 2012-07-26 | 2015-03-04 | 博格华纳公司 | Compressor cover with circumferential groove |
| CN104395582B (en) * | 2012-07-26 | 2017-08-11 | 博格华纳公司 | Compressor cover piece with circumferential groove |
| US9982685B2 (en) | 2012-07-26 | 2018-05-29 | Borgwarner Inc. | Compressor cover with circumferential groove |
| CN103161766A (en) * | 2013-03-04 | 2013-06-19 | 优华劳斯汽车系统（上海）有限公司 | Air compressor of supercharged engine |
| CN103398095A (en) * | 2013-07-02 | 2013-11-20 | 广西玉柴机器股份有限公司 | Thrust bearing and engine supercharger having the same |
| CN104895806A (en) * | 2015-04-22 | 2015-09-09 | 上海理工大学 | Centripetal type compressor |
| CN111577446A (en) * | 2020-06-08 | 2020-08-25 | 常州环能涡轮动力股份有限公司 | Turbocharger |
| CN112343715A (en) * | 2020-09-22 | 2021-02-09 | 沪东中华造船(集团)有限公司 | Air pressurization system for natural gas burning tower of LNG ship |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090107 Termination date: 20130411 |