CN102893033B - Centrifugal compressor - Google Patents
Centrifugal compressor Download PDFInfo
- Publication number
- CN102893033B CN102893033B CN201180024259.4A CN201180024259A CN102893033B CN 102893033 B CN102893033 B CN 102893033B CN 201180024259 A CN201180024259 A CN 201180024259A CN 102893033 B CN102893033 B CN 102893033B
- Authority
- CN
- China
- Prior art keywords
- axle
- centrifugal compressor
- screw portion
- housing
- impeller
- 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.)
- Expired - Fee Related
Links
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
- F04D29/083—Sealings 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
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
- F04D17/12—Multi-stage pumps
- F04D17/122—Multi-stage pumps the individual rotor discs being, one for each stage, on a common shaft and axially spaced, e.g. conventional centrifugal multi- stage compressors
-
- 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
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a centrifugal compressor (CO) for compressing a fluid (F), comprising: a housing (C) comprising a partial joint plane (SP) extending parallel to or along a machine axis (AX), a shaft (SH) extending along the machine axis (AX) and having a first shaft end (SE1) and a second shaft end (SE2), at least one impeller (IM) mounted on the shaft (SH), a collector helix (CC) disposed downstream of the at least one impeller (IM) and collecting the compressed fluid (F) prior to outflow into a downstream machine module, wherein the collector helix (CC) is disposed at the first shaft end (SE1), and a drive (D) disposed on the first shaft end (SE1), wherein an axial intake is provided on the shaft (SH) at the second shaft end (SE2) at an overhang stage (ST) of the centrifugal compressor (CO). In order to improve the centrifugal compressor defined above, such that the production effort is reduced and no great pressure losses are produced in the collector helix, the collector helix (CC) is formed seamlessly in the circumferential direction and is flange mounted on the housing (C) of the centrifugal compressor (CO).
Description
Technical field
The present invention relates to a kind of centrifugal compressor with the axle extended along machine axis, wherein, driver is arranged on the side in gathering screw portion, the fluid compressed was collected in described gathering screw portion before compressed fluid flows out in follow-up machine module in the downstream of at least one impeller, described driver is arranged on the axle head of drawing from the housing of centrifugal compressor, wherein, on the opposite axle head of axle, be provided with the axial suction device in the overhanging level of centrifugal compressor.
Background technique
This kind of compressor compresses large volume stream (such as 600000m especially for the pressure of such as 8bar
3per hour).In this case, described axial suction device tool has the following advantages, that is, it is king-sized for sucking surface construction, and the maximum diameter of impeller suitably keeps simultaneously, to such an extent as to machine can drive at higher rotational speeds, and the material of rotary component can not transship.Described machine is particularly preferred for gas compression.
In so-called gathering screw portion, collect the process-liquid compressed after the impeller, and make it flow into follow-up machine module, such as, in cooling unit.The normally a kind of doughnut implemented in the mode of spiral slightly in such gathering screw portion, the cross section of described doughnut in a circumferential direction with go out to flow more and more near-earth and in rotational direction expand in follow-up unit, because increase in the same way through the volume flow of collection cavity.The described geometrical construction expended owing to the following fact, that is, produces the disadvantageous flow profile of high pressure loss, is also harmful to especially efficiency due to the density of the raising of described fluid in collection cavity.In traditional compressor, gathering screw portion has the joining portion of level as housing, described joining portion produces disadvantageous discontinuities in the flow profile in gathering screw portion, the reprocessing that described discontinuities causes the pressure loss or needs to expend, described reprocessing must with the time compact, individual mode implements on the element constructed usually used as foundry goods.
The known centrifugal compressor with entrance for compressed fluid from document DE 38 35 341 A1 and US 2 578 617 A, described centrifugal compressor has housing, described housing has the composition plane being parallel to machine axis extension and the axle extended along described machine axis, described centrifugal compressor has at least one impeller and gathering screw portion, described gathering screw portion is arranged on the downstream of at least one impeller, and before going out to flow to follow-up machine module, collect compressed fluid, wherein, gathering screw portion is arranged on the first axle head.In addition, disclosed in described document, device comprises driver, and described driver is arranged on the first axle head, wherein, the second axle head is provided with the axial suction device of centrifugal compressor.
Summary of the invention
Therefore, the object of the invention is to improve the centrifugal compressor starting to limit, make to reduce manufacture on the one hand and expend, and in gathering screw portion, do not produce the high pressure loss on the other hand.
Propose according to the present invention, spire to be configured to integral piece in a circumferential direction, and flange-type is connected on the housing of centrifugal compressor.
The integral piece in gathering screw portion there is following advantage, namely, usually the spire being configured to foundry goods is not formed in by the discontinuities that joining portion produces in flow profile, described discontinuities due to flowing interference cause that the less desirable pressure loss or needs expend, individual reprocessing.
In addition, the integral piece of spire there is following advantage, that is, due to the high pressure of the fluid of outflow, the distortion of spire is farthest carried out in rotationally symmetrical fashion, and as traditional structure, due to the separation in joining portion, serious distortion can not occur.Particularly can not open joining portion owing to going out flowing pressure, and also there is not the flange usually constructed circularly in gathering screw portion or the ovalization of connection diameter.
A favourable improvement project of the present invention proposes, and spire is configured to the load-bearing member of the bearing supporting described axle.Therefore achieve structure compact especially on the one hand, and the tolerance chain on the other hand between the impeller of described axle and the inner face of the opposite of housing is short especially.
In addition advantageously, gathering screw cage structure is the load-bearing member of the shaft seal on the side of such as lower shaft end, this axle head is provided with the driver of described centrifugal compressor, and described axle is drawn from the housing of centrifugal compressor.Particularly with by spire be configured to loading ability of bearing part in combination, draw the tolerance chain short especially between the bearing structure of axle and the face of the opposite with described axle of Sealing, to such an extent as to can realize seal clearance little especially, or described Sealing has slackness low especially.
Gathering screw portion meets destination and is configured to component close the housing of centrifugal compressor on side, similar lid.The quantity of component correspondingly reduces.
Direction illustrates axially, radial, circumferencial direction is always about machine axis.
Accompanying drawing explanation
Describe the present invention by means of special embodiment in detail with reference to accompanying drawing below, wherein, except described embodiment, professional workforce especially draws and implements other possibility of the present invention from the combination in any of the feature limited at relevant dependent claims.Accompanying drawing illustrates:
Fig. 1 illustrates the elevational schematic through compressor according to the present invention.
Embodiment
Fig. 1 illustrates the elevational schematic through compressor CO according to the present invention.The impeller IM that the main constituent element of compressor is housing C, carrying only illustrates one of them and the driver D that the axle SH of overhanging level ST, flange-type are connected to the gathering screw portion CC on housing C and rotate described axle SH.
Axle SH extends along machine axis AX, and described machine axis is the rotation axis of driver D simultaneously.Process-liquid F is axially sucked by compressor CO, and enter overhanging level ST, described process-liquid is compressed by means of impeller IM further in downstream, and enter in last level LST, to be collected in gathering screw portion CC subsequently, to enter in follow-up machine module.Axle SH is bearing in two radial bearings BE1, BE2.Axle SH has the first axle head SE1 and the second axle head SE2, and wherein, the first axle head SE1 is driven by driver D, and the second axle head SE2 carries overhanging level ST.Axle head SE1, SE2 are interpreted as the region extended along the direction towards axle center from the corresponding end of axle of axle in the present invention, and wherein, in term of the present invention, about 1/3rd of total axial length is correspondingly called axle head.In the region of the first axle head SE1, except the connection of the transmitting torque with driver D, be also provided with gathering screw portion CC, the second radial bearing BE2 and shaft seal SHS.Housing CC has joining portion in the extension part of machine axis AX, and gathering screw portion CC in the extension part of machine axis or the extension part being parallel to described machine axis be integral piece, and to be connected on housing C by means of the first fixed element flange-type.Meanwhile, gathering screw portion CC is the load-bearing member of the second radial bearing BE2 and shaft seal SHS.The integral piece form of implementation tool being configured to foundry goods in gathering screw portion has the following advantages, that is, it does not have the discontinuities caused by joining portion in addition in a circumferential direction, and described discontinuities can cause flow losses.Second radial bearing BE2 and shaft seal SHS is fixed on the tolerance chain short as far as possible gathering screw portion CC caused between radial bearing and shaft seal SHS, to such an extent as to such as necessary for the thermal expansion radial clearance in shaft seal SHS of axle SH can be minimum.Particularly preferred efficiency can be obtained by this way.
Claims (2)
1., for the centrifugal compressor (CO) of compressed fluid (F), have:
-housing (C), described housing has the composition plane (SP) being parallel to or extending along machine axis (AX);
-the axle (SH) that extends along described machine axis (AX), described axle has the first axle head (SE1) and the second axle head (SE2);
-at least one impeller (IM), at least one impeller described is arranged on described axle (SH);
-gathering screw portion (CC), described gathering screw portion is arranged on the downstream of at least one impeller (IM), and before compressed fluid flows out in follow-up machine module, collect the fluid (F) compressed, wherein, described gathering screw portion (CC) is arranged on described first axle head (SE1);
-driver (D), described driver is arranged on described first axle head (SE1),
-wherein, described second axle head (SE2) of described axle (SH) is provided with the suction device of the axis at overhanging level (ST) place at described centrifugal compressor (CO), it is characterized in that, described gathering screw portion (CC) is integral piece ground structure in a circumferential direction, and flange-type is connected on the described housing (C) of described centrifugal compressor (CO).
2. centrifugal compressor (CO) as claimed in claim 1, wherein, described gathering screw portion (CC) is configured to the load-bearing member of the radial bearing (BE2) supporting described axle (SH).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010020891.4 | 2010-05-18 | ||
| DE102010020891 | 2010-05-18 | ||
| PCT/EP2011/057660 WO2011144515A1 (en) | 2010-05-18 | 2011-05-12 | Centrifugal compressor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102893033A CN102893033A (en) | 2013-01-23 |
| CN102893033B true CN102893033B (en) | 2015-06-03 |
Family
ID=44312333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180024259.4A Expired - Fee Related CN102893033B (en) | 2010-05-18 | 2011-05-12 | Centrifugal compressor |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20130064659A1 (en) |
| EP (1) | EP2572108B1 (en) |
| CN (1) | CN102893033B (en) |
| WO (1) | WO2011144515A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI598709B (en) | 2011-12-06 | 2017-09-11 | 佳能股份有限公司 | Drum unit |
| US9689502B2 (en) | 2015-10-26 | 2017-06-27 | Rolls-Royce Corporation | Rotary exhaust valve system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2578617A (en) * | 1946-11-15 | 1951-12-11 | Worthington Pump & Mach Corp | Multistage centrifugal compressor |
| DE835341C (en) * | 1948-11-28 | 1952-03-31 | Diederich Storjohann | Saucepan handle |
| CN1195078A (en) * | 1997-03-19 | 1998-10-07 | 株式会社日立制作所 | Two-stage centrifugal compressor |
| EP1155222B1 (en) * | 1999-01-25 | 2007-03-21 | Elliott Turbomachinery Company, Inc. | Casing design for rotating machinery and method for manufacture thereof |
| EP2050968A1 (en) * | 2007-10-19 | 2009-04-22 | Siemens Aktiengesellschaft | Pressure container with a cover |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE503754C (en) * | 1928-04-11 | 1930-07-26 | Siemens Schuckertwerke Akt Ges | Centrifugal compressor with housing cooling |
| US2476191A (en) * | 1945-06-15 | 1949-07-12 | Westinghouse Electric Corp | Multistage, axial flow, gas compressor |
| CH676487A5 (en) * | 1988-10-19 | 1991-01-31 | Proizv Ob Nevsky Z Im V I | |
| US6345503B1 (en) * | 2000-09-21 | 2002-02-12 | Caterpillar Inc. | Multi-stage compressor in a turbocharger and method of configuring same |
| GB2400631B (en) * | 2003-04-16 | 2006-07-05 | Adrian Alexander Hubbard | Compound centrifugal and screw compressor |
| US8292576B2 (en) * | 2008-03-31 | 2012-10-23 | Honeywell International Inc. | Compressor scrolls for auxiliary power units |
| DE102008057472B4 (en) * | 2008-11-14 | 2011-07-14 | Atlas Copco Energas GmbH, 50999 | Multi-stage radial turbocompressor |
-
2011
- 2011-05-12 US US13/698,317 patent/US20130064659A1/en not_active Abandoned
- 2011-05-12 WO PCT/EP2011/057660 patent/WO2011144515A1/en active Application Filing
- 2011-05-12 CN CN201180024259.4A patent/CN102893033B/en not_active Expired - Fee Related
- 2011-05-12 EP EP11721272.0A patent/EP2572108B1/en not_active Not-in-force
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2578617A (en) * | 1946-11-15 | 1951-12-11 | Worthington Pump & Mach Corp | Multistage centrifugal compressor |
| DE835341C (en) * | 1948-11-28 | 1952-03-31 | Diederich Storjohann | Saucepan handle |
| CN1195078A (en) * | 1997-03-19 | 1998-10-07 | 株式会社日立制作所 | Two-stage centrifugal compressor |
| EP1155222B1 (en) * | 1999-01-25 | 2007-03-21 | Elliott Turbomachinery Company, Inc. | Casing design for rotating machinery and method for manufacture thereof |
| EP2050968A1 (en) * | 2007-10-19 | 2009-04-22 | Siemens Aktiengesellschaft | Pressure container with a cover |
Also Published As
| Publication number | Publication date |
|---|---|
| US20130064659A1 (en) | 2013-03-14 |
| CN102893033A (en) | 2013-01-23 |
| EP2572108B1 (en) | 2015-08-26 |
| EP2572108A1 (en) | 2013-03-27 |
| WO2011144515A1 (en) | 2011-11-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20190512 |