CN104819166B - A kind of device and method reducing supercharger air compressor oil leak - Google Patents
A kind of device and method reducing supercharger air compressor oil leak Download PDFInfo
- Publication number
- CN104819166B CN104819166B CN201510234780.0A CN201510234780A CN104819166B CN 104819166 B CN104819166 B CN 104819166B CN 201510234780 A CN201510234780 A CN 201510234780A CN 104819166 B CN104819166 B CN 104819166B
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- China
- Prior art keywords
- compressor
- impeller
- size
- protruding portion
- disk
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Classifications
-
- 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
- F04D29/08—Sealings
- F04D29/16—Sealings between pressure and suction sides
- F04D29/161—Sealings between pressure and suction sides especially adapted for elastic fluid pumps
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2250/00—Geometry
- F05D2250/50—Inlet or outlet
- F05D2250/52—Outlet
Abstract
The present invention relates to a kind of device and methods reducing supercharger air compressor oil leak, the device includes the compressor main body being mainly made of impeller, compressor volute and compressor back of the body disk, it is characterized in that, in impeller outlet position, the upper surface of the compressor back of the body disk protrudes outward, and the size of protruding portion has continuous and different degrees of variation, so that compressor back of the body disk and impeller occur in impeller outlet position it is different degrees of overlapping, to make compressor carry on the back the air-flow that disk blocks impeller outlet to some extent.The device can reduce the influence to compressor efficiency while reducing compressor oil leak.
Description
Technical field
The present invention relates to booster manufacturing technology field, more particularly to a kind of device reducing supercharger air compressor oil leak and
Method.
Background technology
Supercharger air compressor oil leak refers to that the lubricating oil that TC bearings use passes through the back of the body disk of compressor impeller, leakage
It is exported to compressor impeller, engine inlets is then leaked by blower outlet.This oil leak works in low in compressor
It is easy to happen under pressure ratio, big flow.By diesel engine refitted at natural gas engine, due to compressor working speed decline, pressure
Mechanism of qi pressure ratio also declines, it may occur that oil leakage phenomenon.
In the prior art, commonly the method for reduction oil leak is：Allow impeller outlet and compressor volute or intermediate
There is a small amount of overlapping.Its operation principle is as follows：Due to overlapping, the fraction of compressor impeller outlet is collided with shell, in phase
Place's stagnation is touched, airflow kinetic energy is converted into pressure energy, and the place's pressure rise that makes to collide passes through leaf to reduce lubricating oil from bottom to top
Wheel back of the body disk reaches compressor impeller outlet.The major defect of oil leak is reduced using method of superposition is：High speed of the air-flow in overlapping
Collision and stagnation produce loss, to cause the decline of compressor efficiency.
Invention content
The purpose of the present invention is to provide a kind of device and method reducing supercharger air compressor oil leak, the device and methods
While reducing compressor oil leak, the influence to compressor efficiency can be reduced.
To achieve the above object, the technical scheme is that：A kind of device reducing supercharger air compressor oil leak, including
The compressor main body being mainly made of impeller, compressor volute and compressor back of the body disk, in impeller outlet position, the compressor back of the body
The upper surface of disk protrudes outward, and the size of protruding portion has continuous and different degrees of variation, so that the compressor
Back of the body disk and impeller occurs different degrees of overlapping in impeller outlet position, and impeller is blocked to some extent to make compressor carry on the back disk
The air-flow of outlet.
Further, in impeller outlet maximum pressure point, the size of the protruding portion is zero, i.e. compressor back of the body disk and impeller
Lap be zero, at impeller outlet pressure minimum, the size of the protruding portion is maximum, i.e. the weight of the compressor back of the body disk and impeller
Folded amount is maximum, and as impeller outlet pressure circumferentially continuous becomes smaller or larger, the size of the protruding portion correspondingly increases
Or reduce.
Further, it is starting point that circumferential angle is zero with the volute tongue end of compressor volute, and takes circumferential angular direction and impeller
Rotation direction is consistent, then in the starting point, the size of the protruding portion is zero, the size of the protruding portion with circumferential angle increasing
Accordingly increase greatly, when circumferential angle reaches the setting value between 325 ~ 335 °, the size of the protruding portion reaches maximum, so
The size of the protruding portion accordingly reduces with the reduction at circumferential angle afterwards, until returning to starting point, the size of the protruding portion subtracts
Small is zero.
Further, the setting value is 330 °, i.e., when circumferential angle is 330 °, the size of the protruding portion reaches most
Greatly.
Further, the upper surface of the compressor back of the body disk and front end face have a chamfering, with by changing the chamfering
Size change the size of the protruding portion.
Further, when the chamfering and compressor carry on the back the upper surface institute angulation maximum of disk, the compressor back of the body disk with
The lap of impeller is zero, when the upper surface institute angulation that the chamfering and compressor carry on the back disk is zero, the compressor back of the body disk with
The lap of impeller is maximum.
Further, the upper surface institute angulation of the chamfering and compressor back of the body diskαNo more than 15 °；The compressor carries on the back disk
High ratio is between 5% to 15% with the Maximum overlap amount of impeller and the leaf of impeller outlet.
Further, the inward-facing retraction certain distance in the lower end of the compressor volute, to carry on the back disk in the compressor
After upper surface protrudes outward, the width of the gas channel formed between the compressor volute and compressor back of the body disk remains unchanged.
The present invention has also correspondingly provided a kind of method reducing supercharger air compressor oil leak, for mainly by impeller, pressure
The compressor main body of mechanism of qi spiral case and compressor back of the body disk composition makes the upper surface of the compressor back of the body disk in impeller outlet position
Protrude outward so that compressor carry on the back disk and impeller occur in impeller outlet position it is different degrees of overlapping；In impeller outlet pressure
Maximum is the position of oil leak minimum, and it is zero to make the size of protruding portion, i.e. the lap of compressor back of the body disk and impeller is zero, in impeller
Outlet pressure minimum, that is, maximum the position of oil leak makes the size maximum of protruding portion, the i.e. lap of compressor back of the body disk and impeller most
Greatly, to allow compressor back of the body disk not block the air-flow of impeller outlet in the position of oil leak minimum.
Further, it is starting point that circumferential angle is zero with the volute tongue end of compressor volute, and takes circumferential angular direction and impeller
Rotation direction is consistent, and then in the starting point, it is zero to make the size of protruding portion, and makes the size of protruding portion with the increasing at circumferential angle
Accordingly increase greatly, when circumferential angle reaches the setting value between 325 ~ 335 °, so that the size of protruding portion is reached maximum, and make
The size of protruding portion accordingly reduces with the reduction at circumferential angle, until returning to starting point, the size of the protruding portion is reduced to zero.
The beneficial effects of the invention are as follows the even property of circumferential asymmetry using oil leak, and in impeller outlet position, disk is carried on the back in compressor
Upper surface setting size there is the protruding portion of the even variation of circumferential asymmetry, make the compressor back of the body disk and impeller in impeller outlet position
It sets and the even overlapping of circumferential asymmetry occurs, the big position overlapping of oil leak is big, and the small position overlapping of oil leak is small or is not overlapped, to subtract
While few compressor oil leak, the influence to compressor efficiency is reduced, there is very strong practicability and wide application prospect.
Description of the drawings
Fig. 1 is the structural schematic diagram of typical booster in the prior art.
Fig. 2 is the maximum structural schematic diagram of protruding portion size of compressor back of the body disk in the embodiment of the present invention.
Fig. 3 is the structural schematic diagram that the protruding portion size of compressor back of the body disk in the embodiment of the present invention is zero.
Fig. 4 is the schematic diagram that compressor impeller muzzle velocity is circumferentially distributed in the embodiment of the present invention.
In figure, 1- impellers, 2- compressor volutes, 3- compressors back of the body disk, the protruding portion of 4- compressors back of the body disk, the 5- compressors back of the body
The upper surface of disk, 6- compressors carry on the back disk front end face, 7- compressors carry on the back disk on chamfering, the lower face of 8- compressor volutes, 9-
Turbine shroud, 10- bearing chambers, 11- turbine wheel assemblies, 12- thrust location rings, 13- thrust bearings, 14- bush(ing) bearings.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is described in further details.
The present invention reduces the device of supercharger air compressor oil leak, as shown in Figure 2,3, including mainly by impeller 1, compressor snail
The compressor main body that shell 2 and compressor back of the body disk 3 form, in impeller outlet position, the upper surface of compressor back of the body disk 3 protrudes outward,
And the size of protruding portion 4 has continuous and different degrees of variation, so that compressor back of the body disk 3 and impeller 1 are in impeller outlet
Different degrees of overlapping occurs for position, to make compressor back of the body disk 3 block the air-flow of impeller outlet to some extent.
The distribution of compressor impeller outlet pressure circumferentially changes.In order to realize that the small position overlapping of oil leak is small or does not weigh
Folded, the big position overlapping of oil leak is big, is zero in the size of impeller outlet maximum pressure point, protruding portion 4, i.e., compressor back of the body disk 3 with
The lap of impeller 1 is zero, and at impeller outlet pressure minimum, the size of protruding portion 4 is maximum, i.e. compressor back of the body disk 3 and impeller 1
Lap it is maximum, and as impeller outlet pressure circumferentially continuous becomes smaller or larger, the size of protruding portion 4 correspondingly increases
Or reduce.
According to the pressure distribution situation that compressor impeller exports, the volute tongue end with compressor volute is that circumferential angle is zero
Point, and take circumferential angular direction consistent with wheel rotation direction, then in starting point, the size of protruding portion 4 is zero, the ruler of protruding portion 4
The very little increase with circumferential angle and accordingly increase, when circumferential angle reaches the setting value between 325 ~ 335 °, the size of protruding portion 4
Reach maximum, then the size of protruding portion 4 accordingly reduces with the reduction at circumferential angle, until returning to starting point, the ruler of protruding portion 4
It is very little to be reduced to zero.In the present embodiment, above-mentioned setting value is 330 °, i.e., when circumferential angle is 330 °, the size of protruding portion 4 reaches
It is maximum.Fig. 4 shows compressor impeller muzzle velocity（It is corresponding with pressure）Circumferentially distributed one embodiment.Speed is in volute tongue
Maximum, i.e. pressure highest below volute tongue below, then circumferentially angular direction continuously decreases pressure, until arriving volute tongue top
Pressure reaches minimum.
In order to realize the change to 4 size of protruding portion, carries on the back the upper surface 5 of disk 3 in compressor and the processing of front end face 6 is fallen
Angle 7, to change the size of protruding portion 4 by changing the size of chamfering 7.When chamfering 7 and compressor carry on the back 5 institute of upper surface of disk
When angulation maximum, it is zero that compressor, which carries on the back disk 3 and the lap of impeller 1, when the angulation of upper surface 5 of chamfering 7 and compressor back of the body disk
When being zero, compressor carries on the back disk 3 and the lap of impeller 1 is maximum.In the present embodiment, the upper surface 5 of chamfering 7 and compressor back of the body disk
Institute's angulationαNo more than 15 °.Compressor back of the body disk 3 ratio high with the Maximum overlap amount of impeller 1 and the leaf of impeller outlet is arrived 5%
Between 15%.
In order to ensure that the air-flow of impeller outlet can also smoothly circulate, the lower face 8 of compressor volute inwardly retract setting away from
From after the upper surface 5 to carry on the back disk in compressor protrudes outward, the air-flow formed between compressor volute 2 and compressor back of the body disk 3 is logical
The width in road remains unchanged.
The present invention also provides methods corresponding with above-mentioned apparatus, i.e., for mainly by impeller, compressor volute and calming the anger
Machine carries on the back the compressor main body of disk composition, in impeller outlet position, so that the upper surface of the compressor back of the body disk is protruded outward, so that pressure
Mechanism of qi carry on the back disk and impeller occur in impeller outlet position it is different degrees of overlapping；Minimum in impeller outlet pressure maximum, that is, oil leak
Position, it is zero to make the size of protruding portion, i.e. the lap of compressor back of the body disk and impeller is zero, is leaked in impeller outlet pressure minimum
The maximum position of oil keeps the size of protruding portion maximum, i.e. the lap of compressor back of the body disk and impeller is maximum, to make compressor carry on the back
Disk can not block the air-flow of impeller outlet in the position of oil leak minimum.
In the preferred embodiment, it is starting point that circumferential angle is zero with the volute tongue end of compressor volute, and takes week
Consistent with wheel rotation direction to angular direction, then in the starting point, it is zero to make the size of protruding portion, and makes the ruler of protruding portion
The very little increase with circumferential angle and accordingly increase, when circumferential angle reaches 330 °, the size of protruding portion is made to reach maximum, and make protrusion
The size in portion accordingly reduces with the reduction at circumferential angle, until returning to starting point, the size of the protruding portion is reduced to zero.
The above are preferred embodiments of the present invention, all any changes made according to the technical solution of the present invention, and generated function is made
When with range without departing from technical solution of the present invention, all belong to the scope of protection of the present invention.
Claims (7)
1. a kind of device reducing supercharger air compressor oil leak, including disk group is mainly carried on the back by impeller, compressor volute and compressor
At compressor main body, which is characterized in that in impeller outlet position, the upper surface of the compressor back of the body disk protrudes outward, and prominent
The size for going out portion has continuous and different degrees of variation, so that compressor back of the body disk and impeller are in impeller outlet position
Different degrees of overlapping occurs, to make compressor back of the body disk block the air-flow of impeller outlet to some extent；
Be zero in the size of impeller outlet maximum pressure point, the protruding portion, i.e. the lap of compressor back of the body disk and impeller is zero,
At impeller outlet pressure minimum, the size of the protruding portion is maximum, i.e. the lap of compressor back of the body disk and impeller is maximum, and with
It impeller outlet pressure circumferentially continuous to become smaller or larger, the size of the protruding portion correspondingly increases or reduces；To calm the anger
The volute tongue end of machine spiral case is the starting point that circumferential angle is zero, and takes circumferential angular direction consistent with wheel rotation direction, then at described
At point, the size of the protruding portion is zero, and the size of the protruding portion accordingly increases with the increase at circumferential angle, is reached at circumferential angle
When a setting value between to 325 ~ 335 °, the size of the protruding portion reaches maximum, and then the size of the protruding portion is with week
Accordingly reduce to the reduction at angle, until returning to starting point, the size of the protruding portion is reduced to zero.
2. a kind of device reducing supercharger air compressor oil leak according to claim 1, which is characterized in that the setting value
It it is 330 °, i.e., when circumferential angle is 330 °, the size of the protruding portion reaches maximum.
3. a kind of device reducing supercharger air compressor oil leak according to claim 1 or 2, which is characterized in that the pressure
Mechanism of qi, which carries on the back the upper surface of disk and front end face, has a chamfering, to change the ruler of the protruding portion by changing the size of the chamfering
Very little size.
4. a kind of device reducing supercharger air compressor oil leak according to claim 3, which is characterized in that when the chamfering
When carrying on the back the upper surface institute angulation maximum of disk with compressor, the lap of the compressor back of the body disk and impeller is zero, when the chamfering
When upper surface institute angulation with compressor back of the body disk is zero, the lap of the compressor back of the body disk and impeller is maximum.
5. it is according to claim 4 it is a kind of reduce supercharger air compressor oil leak device, which is characterized in that the chamfering with
Compressor carries on the back the upper surface institute angulation of diskαNo more than 15 °；The Maximum overlap amount and impeller outlet of the compressor back of the body disk and impeller
The high ratio of leaf between 5% to 15%.
6. a kind of device reducing supercharger air compressor oil leak according to claim 1, which is characterized in that the compressor
The inward-facing retraction certain distance in lower end of spiral case, after the upper surface to carry on the back disk in the compressor protrudes outward, the compressor
The width of the gas channel formed between spiral case and compressor back of the body disk remains unchanged.
7. a kind of method reducing supercharger air compressor oil leak, which is characterized in that for mainly by impeller, compressor volute and pressure
Mechanism of qi carries on the back the compressor main body of disk composition, in impeller outlet position, the upper surface of the compressor back of the body disk is made to protrude outward, so that
Compressor carry on the back disk and impeller occur in impeller outlet position it is different degrees of overlapping；It is minimum in impeller outlet pressure maximum, that is, oil leak
Position, it is zero to make the size of protruding portion, i.e., compressor back of the body disk and the lap of impeller are zero, are in impeller outlet pressure minimum
The maximum position of oil leak keeps the size of protruding portion maximum, i.e. the lap of compressor back of the body disk and impeller is maximum, to make compressor
Back of the body disk can not block the air-flow of impeller outlet in the position of oil leak minimum；
Volute tongue end with compressor volute is the starting point that circumferential angle is zero, and takes circumferential angular direction consistent with wheel rotation direction,
Then in the starting point, it is zero to make the size of protruding portion, and the size of protruding portion is made accordingly to increase with the increase at circumferential angle,
When circumferential angle reaches the setting value between 325 ~ 335 °, the size of protruding portion is set to reach maximum, and make the size of protruding portion
Accordingly reduce with the reduction at circumferential angle, until returning to starting point, the size of the protruding portion is reduced to zero.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510234780.0A CN104819166B (en) | 2015-05-11 | 2015-05-11 | A kind of device and method reducing supercharger air compressor oil leak |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510234780.0A CN104819166B (en) | 2015-05-11 | 2015-05-11 | A kind of device and method reducing supercharger air compressor oil leak |
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| Publication Number | Publication Date |
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| CN104819166A CN104819166A (en) | 2015-08-05 |
| CN104819166B true CN104819166B (en) | 2018-09-18 |
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| CN201510234780.0A Active CN104819166B (en) | 2015-05-11 | 2015-05-11 | A kind of device and method reducing supercharger air compressor oil leak |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP3712441B1 (en) * | 2017-11-16 | 2023-07-12 | Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | Centrifugal compressor and turbo charger equipped with said centrifugal compressor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204755385U (en) * | 2015-05-11 | 2015-11-11 | 山东赛马力发电设备有限公司 | Reduce device of booster compressor oil leak |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56113097A (en) * | 1980-02-08 | 1981-09-05 | Hitachi Ltd | Diffuser for centrifugal hydraulic machine |
| JPS62188598U (en) * | 1986-05-23 | 1987-12-01 | ||
| JPH10176699A (en) * | 1996-12-18 | 1998-06-30 | Ishikawajima Harima Heavy Ind Co Ltd | Centrifugal compressor |
| EP1778982B1 (en) * | 2004-08-19 | 2018-10-10 | Honeywell International Inc. | Compressor wheel housing |
| JP5905315B2 (en) * | 2012-03-29 | 2016-04-20 | 三菱重工業株式会社 | Centrifugal compressor |
| WO2015019901A1 (en) * | 2013-08-06 | 2015-02-12 | 株式会社Ihi | Centrifugal compressor and supercharger |
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2015
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204755385U (en) * | 2015-05-11 | 2015-11-11 | 山东赛马力发电设备有限公司 | Reduce device of booster compressor oil leak |
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Denomination of invention: A device and method for reducing oil leakage of supercharger compressor Effective date of registration: 20221202 Granted publication date: 20180918 Pledgee: China Construction Bank Co.,Ltd. Weifang High tech Sub branch Pledgor: SHANDONG SUPERMALY GENERATING EQUIPMENT CO.,LTD. Registration number: Y2022980024610 |
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