CN104819166A - Device and method for reducing oil leakage of supercharger compressor - Google Patents
Device and method for reducing oil leakage of supercharger compressor Download PDFInfo
- Publication number
- CN104819166A CN104819166A CN201510234780.0A CN201510234780A CN104819166A CN 104819166 A CN104819166 A CN 104819166A CN 201510234780 A CN201510234780 A CN 201510234780A CN 104819166 A CN104819166 A CN 104819166A
- Authority
- CN
- China
- Prior art keywords
- impeller
- gas compressor
- size
- body dish
- protuberance
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 241000237858 Gastropoda Species 0.000 claims description 9
- 230000003467 diminishing effect Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 59
- 239000000314 lubricant Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Supercharger (AREA)
Abstract
The invention relates to a device and method for reducing oil leakage of a supercharger compressor. The device comprises a compressor body mainly composed of an impeller, a compressor volute and a compressor back plate. The device is characterized in that at the outlet position of the impeller, the upper end face of the compressor back plate protrudes outwards, the size of the protruding part has continuous changes of different degrees, and therefore the compressor back plate and the impeller overlap to different degrees at the outlet position of the impeller, and the compressor back plate blocks gas flow the outlet of the impeller to different degrees. By means of the device, the influences on the efficiency of the compressor can be reduced while the oil leakage of the compressor is reduced.
Description
Technical field
The present invention relates to pressurized machine manufacturing technology field, particularly a kind of device and method reducing supercharger air compressor leakage of oil.
Background technique
Supercharger air compressor leakage of oil refers to the back of the body dish of lubricant oil by compressor impeller of TC bearings use, leaks into compressor impeller outlet, then leaks into engine inlets by blower outlet.This leakage of oil easily occurs under gas compressor works in low-pressure ratio, large discharge.The natural gas engine become by diesel engine refitted, because gas compressor working speed declines, compressor pressure ratio also declines, and oil leakage phenomenon may occur.
In the prior art, the method for conventional minimizing leakage of oil is: allow impeller outlet and compressor volute or intermediate have a small amount of overlapping.Its working principle is as follows: due to overlap, and fraction and the housing of compressor impeller outlet are collided, in place's stagnation of colliding, airflow kinetic energy is converted into pressure energy, make place's pressure rising of colliding, thus reduce lubricant oil from bottom to top, arrive compressor impeller outlet by impeller back of the body dish.Utilize method of superposition to reduce the major defect of leakage of oil to be: air-flow creates loss at the high velocity impact of overlapping and stagnation, thus causes the decline of compressor efficiency.
Summary of the invention
The object of the present invention is to provide a kind of device and method reducing supercharger air compressor leakage of oil, this device and method, while the leakage of oil of minimizing gas compressor, can reduce the impact on compressor efficiency.
For achieving the above object, technological scheme of the present invention is: a kind of device reducing supercharger air compressor leakage of oil, comprise the gas compressor main body primarily of impeller, compressor volute and gas compressor back of the body dish composition, in impeller outlet position, the upper-end surface of described gas compressor back of the body dish outwardly, and the size of protuberance has continuously and change in various degree, what to occur in various degree in impeller outlet position to make described gas compressor back of the body dish and impeller is overlapping, thus makes gas compressor back of the body dish block the air-flow of impeller outlet to some extent.
Further, at impeller outlet maximum pressure point, described protuberance is of a size of zero, namely the lap of gas compressor back of the body dish and impeller is zero, at the minimum place of impeller outlet pressure, the size of described protuberance is maximum, and namely the lap of gas compressor back of the body dish and impeller is maximum, and along with impeller outlet pressure diminishing continuously or becoming large circumferentially, the size of described protuberance correspondingly increases or reduces.
Further, with the snail tongue end of compressor volute for circumferential angle is the starting point of zero, and it is consistent with wheel rotation direction to get circumferential angular direction, then at described starting point place, described protuberance is of a size of zero, size corresponding increase with the increase at circumferential angle of described protuberance, when circumferential angle reaches the setting value between 325 ~ 335 °, the size of described protuberance reaches maximum, then size corresponding reduction with the reduction at circumferential angle of described protuberance, until get back to starting point place, the size of described protuberance is reduced to zero.
Further, described setting value is 330 °, and namely when circumferential angle is 330 °, the size of described protuberance reaches maximum.
Further, upper-end surface and the front-end face of described gas compressor back of the body dish have a chamfering, change the size of described protuberance with the size by changing described chamfering.
Further, when the upper-end surface institute angulation of described chamfering and gas compressor back of the body dish is maximum, the lap of described gas compressor back of the body dish and impeller is zero, and when the upper-end surface institute angulation of described chamfering and gas compressor back of the body dish is zero, the lap of described gas compressor back of the body dish and impeller is maximum.
Further, the upper-end surface institute angulation of described chamfering and gas compressor back of the body dish
αbe not more than 15 °; The Maximum overlap amount of described gas compressor back of the body dish and impeller and the high ratio of the leaf of impeller outlet are between 5% to 15%.
Further, inwardly retract certain distance in the lower end surface of described compressor volute, with the upper-end surface at described gas compressor back of the body dish outwardly after, the width of the air-flow path formed between described compressor volute and gas compressor back of the body dish remains unchanged.
The present invention also accordingly provides a kind of method reducing supercharger air compressor leakage of oil, for the gas compressor main body formed primarily of impeller, compressor volute and gas compressor back of the body dish, in impeller outlet position, outwardly, what to occur in various degree in impeller outlet position to make gas compressor back of the body dish and impeller is overlapping in the upper-end surface making described gas compressor back of the body dish; In the maximum position that namely leakage of oil is minimum of impeller outlet pressure, protuberance is made to be of a size of zero, namely the lap of gas compressor back of the body dish and impeller is zero, in the minimum position that namely leakage of oil is maximum of impeller outlet pressure, make the size of protuberance maximum, namely the lap of gas compressor back of the body dish and impeller is maximum, thus makes gas compressor back of the body dish can not block the air-flow of impeller outlet in the position that leakage of oil is minimum.
Further, with the snail tongue end of compressor volute for circumferential angle is the starting point of zero, and it is consistent with wheel rotation direction to get circumferential angular direction, then at described starting point place, protuberance is made to be of a size of zero, and make the corresponding increase with the increase at circumferential angle of the size of protuberance, when circumferential angle reaches the setting value between 325 ~ 335 °, the size of protuberance is made to reach maximum, and make the corresponding reduction with the reduction at circumferential angle of the size of protuberance, until get back to starting point place, the size of described protuberance is reduced to zero.
The invention has the beneficial effects as follows and utilize the even property of the circumferential asymmetry of leakage of oil, in impeller outlet position, in the upper-end surface of gas compressor back of the body dish, the protuberance that size has the even change of circumferential asymmetry is set, make gas compressor back of the body dish and impeller that even overlapping of circumferential asymmetry occur in impeller outlet position, the location overlap that leakage of oil is large is large, the little location overlap of leakage of oil is little or not overlapping, thus while the leakage of oil of minimizing gas compressor, reduce the impact on compressor efficiency, there is very strong practicability and wide application prospect.
Accompanying drawing explanation
Fig. 1 is the structural representation of typical pressurized machine in prior art.
Fig. 2 is the maximum structural representation of the protuberance size of gas compressor back of the body dish in the embodiment of the present invention.
Fig. 3 is the structural representation that the protuberance of gas compressor back of the body dish in the embodiment of the present invention is of a size of zero.
Fig. 4 is the schematic diagram that in the embodiment of the present invention, compressor impeller outlet velocity circumferentially distributes.
In figure, 1-impeller, 2-compressor volute, 3-gas compressor back of the body dish, the protuberance of 4-gas compressor back of the body dish, the upper-end surface of 5-gas compressor back of the body dish, the front-end face of 6-gas compressor back of the body dish, the chamfering on 7-gas compressor back of the body dish, the lower end surface of 8-compressor volute,, 9-turbine shroud, 10-bearing chamber, 11-turbine wheel assembly, 12-thrust location ring, 13-thrust-bearing, 14-radial sliding bearing.
Embodiment
Below in conjunction with drawings and the specific embodiments, the present invention is described in further detail.
The present invention reduces the device of supercharger air compressor leakage of oil, as shown in Figure 2,3, comprise the gas compressor main body primarily of impeller 1, compressor volute 2 and gas compressor back of the body dish 3 composition, in impeller outlet position, the upper-end surface of gas compressor back of the body dish 3 outwardly, and the size of protuberance 4 has continuously and change in various degree, what to occur in various degree in impeller outlet position to make gas compressor back of the body dish 3 and impeller 1 is overlapping, thus makes gas compressor back of the body dish 3 block the air-flow of impeller outlet to some extent.
The distribution of compressor impeller outlet pressure circumferentially changes.Little or not overlapping in order to realize the little location overlap of leakage of oil, the location overlap that leakage of oil is large is large, at impeller outlet maximum pressure point, protuberance 4 is of a size of zero, and namely gas compressor back of the body dish 3 is zero with the lap of impeller 1, at the minimum place of impeller outlet pressure, the size of protuberance 4 is maximum, namely gas compressor back of the body dish 3 is maximum with the lap of impeller 1, and along with impeller outlet pressure diminishing continuously or becoming greatly circumferentially, the size of protuberance 4 correspondingly increases or reduces.
According to the pressure distribution situation of compressor impeller outlet, with the snail tongue end of compressor volute for circumferential angle is the starting point of zero, and it is consistent with wheel rotation direction to get circumferential angular direction, then at starting point place, protuberance 4 is of a size of zero, size corresponding increase with the increase at circumferential angle of protuberance 4, when circumferential angle reaches the setting value between 325 ~ 335 °, the size of protuberance 4 reaches maximum, then size corresponding reduction with the reduction at circumferential angle of protuberance 4, until get back to starting point place, the size of protuberance 4 is reduced to zero.In the present embodiment, above-mentioned setting value is 330 °, and namely when circumferential angle is 330 °, the size of protuberance 4 reaches maximum.Fig. 4 shows the embodiment that compressor impeller outlet velocity (corresponding with pressure) circumferentially distributes.Speed is maximum sublingual of snail, and namely pressure is the highest below snail tongue, and then pressure circumferentially reduces angular direction gradually, until reach minimum to snail tongue upper pressure.
In order to realize the change to protuberance 4 size, at the upper-end surface 5 of gas compressor back of the body dish 3 and front-end face 6 chamfering 7, change the size of protuberance 4 with the size by changing chamfering 7.When chamfering 7 and 5, the upper-end surface angulation of gas compressor back of the body dish are maximum, gas compressor back of the body dish 3 is zero with the lap of impeller 1, and when chamfering 7 is zero with 5, the upper-end surface angulation of gas compressor back of the body dish, gas compressor back of the body dish 3 is maximum with the lap of impeller 1.In the present embodiment, 5, the upper-end surface angulation of chamfering 7 and gas compressor back of the body dish
αbe not more than 15 °.The Maximum overlap amount of gas compressor back of the body dish 3 and impeller 1 and the high ratio of the leaf of impeller outlet are between 5% to 15%.
In order to ensure that the air-flow of impeller outlet can also circulate smoothly, inwardly retract setpoint distance in the lower end surface 8 of compressor volute, with the upper-end surface 5 at gas compressor back of the body dish outwardly after, the width of air-flow path formed between compressor volute 2 and gas compressor back of the body dish 3 remains unchanged.
Present invention also offers the method corresponding to said apparatus, namely for the gas compressor main body formed primarily of impeller, compressor volute and gas compressor back of the body dish, in impeller outlet position, outwardly, what to occur in various degree in impeller outlet position to make gas compressor back of the body dish and impeller is overlapping in the upper-end surface making described gas compressor back of the body dish; In the maximum position that namely leakage of oil is minimum of impeller outlet pressure, protuberance is made to be of a size of zero, namely the lap of gas compressor back of the body dish and impeller is zero, in the minimum position that namely leakage of oil is maximum of impeller outlet pressure, make the size of protuberance maximum, namely the lap of gas compressor back of the body dish and impeller is maximum, thus makes gas compressor back of the body dish can not block the air-flow of impeller outlet in the position that leakage of oil is minimum.
In the preferred embodiment, with the snail tongue end of compressor volute for circumferential angle is the starting point of zero, and it is consistent with wheel rotation direction to get circumferential angular direction, then at described starting point place, makes protuberance be of a size of zero, and make the corresponding increase with the increase at circumferential angle of the size of protuberance, when circumferential angle reaches 330 °, make the size of protuberance reach maximum, and make the corresponding reduction with the reduction at circumferential angle of the size of protuberance, until get back to starting point place, the size of described protuberance is reduced to zero.
Be more than preferred embodiment of the present invention, all changes done according to technical solution of the present invention, when the function produced does not exceed the scope of technical solution of the present invention, all belong to protection scope of the present invention.
Claims (10)
1. one kind is reduced the device of supercharger air compressor leakage of oil, comprise the gas compressor main body primarily of impeller, compressor volute and gas compressor back of the body dish composition, it is characterized in that, in impeller outlet position, the upper-end surface of described gas compressor back of the body dish outwardly, and the size of protuberance has continuously and change in various degree, what to occur in various degree in impeller outlet position to make described gas compressor back of the body dish and impeller is overlapping, thus makes gas compressor back of the body dish block the air-flow of impeller outlet to some extent.
2. a kind of device reducing supercharger air compressor leakage of oil according to claim 1, it is characterized in that, at impeller outlet maximum pressure point, described protuberance is of a size of zero, and namely the lap of gas compressor back of the body dish and impeller is zero, at the minimum place of impeller outlet pressure, the size of described protuberance is maximum, namely the lap of gas compressor back of the body dish and impeller is maximum, and along with impeller outlet pressure diminishing continuously or becoming large circumferentially, the size of described protuberance correspondingly increases or reduces.
3. a kind of device reducing supercharger air compressor leakage of oil according to claim 2, it is characterized in that, with the snail tongue end of compressor volute for circumferential angle is the starting point of zero, and it is consistent with wheel rotation direction to get circumferential angular direction, then at described starting point place, described protuberance is of a size of zero, size corresponding increase with the increase at circumferential angle of described protuberance, when circumferential angle reaches the setting value between 325 ~ 335 °, the size of described protuberance reaches maximum, then size corresponding reduction with the reduction at circumferential angle of described protuberance, until get back to starting point place, the size of described protuberance is reduced to zero.
4. a kind of device reducing supercharger air compressor leakage of oil according to claim 3, is characterized in that, described setting value is 330 °, and namely when circumferential angle is 330 °, the size of described protuberance reaches maximum.
5. a kind of device reducing supercharger air compressor leakage of oil according to claim 2,3 or 4, it is characterized in that, upper-end surface and the front-end face of described gas compressor back of the body dish have a chamfering, change the size of described protuberance with the size by changing described chamfering.
6. a kind of device reducing supercharger air compressor leakage of oil according to claim 5, it is characterized in that, when the upper-end surface institute angulation of described chamfering and gas compressor back of the body dish is maximum, the lap of described gas compressor back of the body dish and impeller is zero, when the upper-end surface institute angulation of described chamfering and gas compressor back of the body dish is zero, the lap of described gas compressor back of the body dish and impeller is maximum.
7. a kind of device reducing supercharger air compressor leakage of oil according to claim 6, is characterized in that, the upper-end surface institute angulation of described chamfering and gas compressor back of the body dish
αbe not more than 15 °; The Maximum overlap amount of described gas compressor back of the body dish and impeller and the high ratio of the leaf of impeller outlet are between 5% to 15%.
8. a kind of device reducing supercharger air compressor leakage of oil according to claim 1, it is characterized in that, inwardly retract certain distance in the lower end surface of described compressor volute, with the upper-end surface at described gas compressor back of the body dish outwardly after, the width of the air-flow path formed between described compressor volute and gas compressor back of the body dish remains unchanged.
9. one kind is reduced the method for supercharger air compressor leakage of oil, it is characterized in that, for the gas compressor main body formed primarily of impeller, compressor volute and gas compressor back of the body dish, in impeller outlet position, outwardly, what to occur in various degree in impeller outlet position to make gas compressor back of the body dish and impeller is overlapping in the upper-end surface making described gas compressor back of the body dish; In the maximum position that namely leakage of oil is minimum of impeller outlet pressure, protuberance is made to be of a size of zero, namely the lap of gas compressor back of the body dish and impeller is zero, in the minimum position that namely leakage of oil is maximum of impeller outlet pressure, make the size of protuberance maximum, namely the lap of gas compressor back of the body dish and impeller is maximum, thus makes gas compressor back of the body dish can not block the air-flow of impeller outlet in the position that leakage of oil is minimum.
10. a kind of method reducing supercharger air compressor leakage of oil according to claim 9, it is characterized in that, with the snail tongue end of compressor volute for circumferential angle is the starting point of zero, and it is consistent with wheel rotation direction to get circumferential angular direction, then at described starting point place, protuberance is made to be of a size of zero, and make the corresponding increase with the increase at circumferential angle of the size of protuberance, when circumferential angle reaches the setting value between 325 ~ 335 °, the size of protuberance is made to reach maximum, and make the corresponding reduction with the reduction at circumferential angle of the size of protuberance, until get back to starting point place, the size of described protuberance 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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
|---|---|
| CN104819166A true CN104819166A (en) | 2015-08-05 |
| CN104819166B 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3712441A4 (en) * | 2017-11-16 | 2021-06-23 | Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | CENTRIFUGAL COMPRESSOR AND TURBOCHARGER EQUIPPED WITH THE CENTRIFUGAL COMPRESSOR |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4421457A (en) * | 1980-02-08 | 1983-12-20 | Hitachi, Ltd. | Diffuser of centrifugal fluid 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 |
| CN101057079A (en) * | 2004-08-19 | 2007-10-17 | 霍尼韦尔国际公司 | Compressor housing |
| JP2013204550A (en) * | 2012-03-29 | 2013-10-07 | Mitsubishi Heavy Ind Ltd | Centrifugal compressor |
| WO2015019901A1 (en) * | 2013-08-06 | 2015-02-12 | 株式会社Ihi | Centrifugal compressor and supercharger |
| 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 |
-
2015
- 2015-05-11 CN CN201510234780.0A patent/CN104819166B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4421457A (en) * | 1980-02-08 | 1983-12-20 | Hitachi, Ltd. | Diffuser of centrifugal fluid 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 |
| CN101057079A (en) * | 2004-08-19 | 2007-10-17 | 霍尼韦尔国际公司 | Compressor housing |
| JP2013204550A (en) * | 2012-03-29 | 2013-10-07 | Mitsubishi Heavy Ind Ltd | Centrifugal compressor |
| WO2015019901A1 (en) * | 2013-08-06 | 2015-02-12 | 株式会社Ihi | Centrifugal compressor and supercharger |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3712441A4 (en) * | 2017-11-16 | 2021-06-23 | Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | CENTRIFUGAL COMPRESSOR AND TURBOCHARGER EQUIPPED WITH THE CENTRIFUGAL COMPRESSOR |
| US11092165B2 (en) | 2017-11-16 | 2021-08-17 | Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. | Centrifugal compressor and turbocharger including the same |
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| Publication number | Publication date |
|---|---|
| CN104819166B (en) | 2018-09-18 |
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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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