CN202926661U - Centrifugal compressor - Google Patents
Centrifugal compressor Download PDFInfo
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- CN202926661U CN202926661U CN 201220619100 CN201220619100U CN202926661U CN 202926661 U CN202926661 U CN 202926661U CN 201220619100 CN201220619100 CN 201220619100 CN 201220619100 U CN201220619100 U CN 201220619100U CN 202926661 U CN202926661 U CN 202926661U
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- impeller
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- centrifugal compressor
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- bearing
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Abstract
The utility model discloses a centrifugal compressor which comprises a stator and a rotor, wherein the centrifugal compressor is of a four-section and four-stage type; and all impellers on the rotor are ternary flow impellers respectively. According to the centrifugal compressor disclosed by the utility model, the pneumatic performance can be improved and the polytropic efficiency of the single impeller is increased.
Description
Technical field
The utility model relates to a kind of centrifugal compressor.
Background technique
Centrifugal compressor is comprised of rotor, stator and bearing etc.The parts such as impeller are enclosed within and form rotor on main shaft, and rotor bearing is driven and High Rotation Speed by power engine on bearing.Stator comprises the parts such as casing, dividing plate, sealing and volute casing.Form the fixed elements such as Diffuser, bend and return channel between dividing plate.Only have the centrifugal compressor of an impeller to be called single-stage radial compressor, what two above impellers were arranged is called multistage centrifugal compressor (seeing coloured picture).Level is comprised of the passages such as Diffuser of impeller and back thereof.Impeller is that the impeller of the crucial section centrifugal compressor of centrifugal compressor has two kinds of enclosed and semi-open types.Double shrouded wheel is comprised of blade, wheel cap and wheel disc, and half-opened impeller does not have wheel cap.When the impeller High Rotation Speed, due to the interaction of power between blade and gas, be mainly the effect of centrifugal force, gas flows to impeller outer edge from impeller center suction along Ye Dao (passage between blade).Impeller is to the gas work done, and gas obtains energy, and pressure and speed improve.Then, gas flow is through passages such as Diffusers, Speed Reduction, and pressure further improves, and namely kinetic energy changes pressure energy into.Enter volute casing by the Diffuser effluent air and transfer out, perhaps enter next stage continuation compression through bend and return channel.In whole compression process, the specific volume of gas reduces, and temperature increases.After temperature increased, pressurized gas need to consume more energy.In order to save power, multistage centrifugal compressor is cooling in the middle of pressure ratio adopts often greater than 3.By the middle cooling level group section of being called that separates.Gas enters interstage cooler by the preceding paragraph, enters next section continuation compression after cooling reduction temperature again.Interstage cooler generally adopts water-cooled.But the polytropic efficiency of existing aeroperformance and single impeller is lower.
Summary of the invention
The purpose of this utility model is to provide a kind of centrifugal compressor that improves aeroperformance and single impeller polytropic efficiency.
For achieving the above object, the utility model adopts following technological scheme: a kind of centrifugal compressor, comprise stator and rotor, and centrifugal compressor is four sections level Four formulas, described epitrochanterian all impellers are the three-dimensional flow impeller.
Rotor comprises the level Four impeller that arranges on main shaft and main shaft, and the suction port of described one-level impeller is axially open, and suction tude and the outlet pipe of secondary, three grades and level Four impeller are that vertical major is to downward-extension.
Main shaft between one-level impeller and sencond stage impeller is provided with spring bearing and thrust bearing and covers in spring bearing and the spring bearing case in the thrust bearing outside, the bearing housing that also is provided with spring bearing and covers in this spring bearing on the main shaft of level Four impeller rear side, described spring bearing are tilting-pad bearing.
The one-level impeller is that bolt is connected with main shaft, and secondary, three grades and level Four impeller are hot jacket and are loaded on main shaft.
The weldment of all impellers for being welded into by superior alloy steel.
Centrifugal compressor described in the utility model, four impellers all adopt the three-dimensional flow impeller, and it has good aeroperformance, and the polytropic efficiency of single impeller reaches 87 ﹪, reaches advanced international level.Impeller is welded by superior alloy steel, and through quiet, dynamic balancing and overspeed test, has very high reliability and Security.The one-level impeller is connected with axle with bolt, and two, three, the level Four impeller is loaded on axle by hot jacket, all can not simply remove.Whole rotor is after assembling is completed, through strict dynamic balance calibration, to guarantee the stationarity of running.Centrifugal compressor described in the utility model has that condition range is wide, and efficient is high, and the complete machine isothermal efficiency reaches 74%, reaches advanced international level.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
by a kind of centrifugal compressor shown in Figure 1, comprise stator and rotor, stator comprises the spiral case group, dividing plate, and seal arrangement, described rotor is assemblied in spiral case group 1, centrifugal compressor is four sections level Four formulas, rotor comprises the level Four impeller 9 that arranges on the main shaft 2 of level and main shaft 2, be disposed with from front to back four impellers on main shaft 2: one-level impeller 14, sencond stage impeller 7, three grades of impellers 8 and level Four impeller 9, the corresponding every grade of impeller of spiral case group 1 is provided with volute casing respectively, be provided with respectively dividing plate between every grade of impeller and spiral case group 1, and the rear side of every grade of impeller is equipped with Diffuser.Described impeller is made of wheel cap, blade and wheel disc, and epitrochanterian all impellers---one-level impeller 14, sencond stage impeller 7, three grades of impellers 8 and level Four impeller 9 are the three-dimensional flow impeller, and all impellers are the weldment for being welded into by superior alloy steel all.9, the four sections compressions of level Four impeller altogether of the rotor of centrifugal compressor described in the utility model, every grade is one section, all passes through large nest plate interstage cooler after every grade of compression cooling.Large nest plate interstage cooler is prior art, Gu be not described in detail.
One-level impeller 14 is installed on main shaft 2 one ends, and the suction port 15 of one-level impeller 14 is axially open, and namely one-level impeller 14 is provided with the stator electric adjusting device for axial admission and its suction port 15 places, and one-level impeller 14 air outlets are positioned at main shaft 2 one skew backs and give vent to anger downwards.Secondary, three grades and level Four impeller 7,8,9 suction tude separately 12 and outlet pipe 13 all are positioned at the side of main shaft 2 and are vertical major 2 to downward-extension.
One-level impeller 14 is cantilever type, and for bolt is connected, secondary, three grades and level Four impeller 7,8,9 are hot jacket and are loaded on main shaft 2 one-level impeller 14 with main shaft 2.Main shaft 2 between one-level impeller 14 and sencond stage impeller 7 is provided with spring bearing 4 and thrust bearing 5 and spring bearing case 3, spring bearing case 3 covers in spring bearing 4 and thrust bearing 5 outsides, the bearing housing 10 that also is provided with spring bearing 11 on the main shaft 2 of level Four impeller 9 rear sides and covers in this spring bearing 11 outsides, described spring bearing 4,11 is tilting-pad bearing, tilting-pad bearing has five tilting pads, it is ZL CN201020171702.3 that tilting pad can adopt the patent No., and name is called the patented technology of " adjustable eccentric tilting pad ".
Between the main shaft 2 and spiral case group 1 at every grade of centrifugal compressor impeller inlet place, between main shaft 2 and wheel cap import and between main shaft 2 and wheel disc, the labyrinth-type excluder that aluminum alloy is made is housed all, lose to reduce because stream pressure does not wait the leakage that produces.Spring bearing case 3 two ends are provided with the axis hole for interspersed main shaft 2, and be respectively equipped with labyrinth-type excluder between the two ends of spring bearing case 3 axis hole and main shaft 2, bearing housing 10 two ends also are provided with the axis hole for interspersed main shaft 2, aluminum alloy labyrinth type oil seal apparatus also is housed respectively, to prevent spilling of lubricant oil between the two ends axis hole of bearing housing 10 and main shaft 2.Labyrinth sealing is prior art, therefore be not described in detail.Centrifugal compressor described in the utility model, its lubrication system can adopt the patent No. to be: ZL 200820238956.5, and name is called the patented technology of " finned tube exchanger inside compressor " as oil cooler; It has good cooling results, saves material, the advantage such as water saving.
Centrifugal compressor described in the utility model is the improvement of making on the basis of original centrifugal compressor, it is that single cylinder, single suction enter, dual-supporting, the isothermal centrifugal compressor of single shaft level Four, its characteristics are that impeller is divided into four sections, level Four, three times the centre is cooling, this compressor utilizes diaphragm type coupler to be connected by prime mover, after four impellers are all changed employing three-dimensional flow impeller, adopt external import software to carry out three-dimensional flow analysis to impeller, it has good aeroperformance, the polytropic efficiency of single impeller reaches 87 ﹪, reaches advanced international level.Impeller is welded by superior alloy steel, and through quiet, dynamic balancing and overspeed test, has very high reliability and Security.This type is that oxygen making amount is 20000Nm
3The raw air compressor of/h air separation plant also can be used for other non-corrosiveness gas of force feed in machine-building and metallurgical industry.
Claims (5)
1. a centrifugal compressor, comprise stator and rotor, and centrifugal compressor is four sections level Four formulas, it is characterized in that: described epitrochanterian all impellers are the three-dimensional flow impeller.
2. centrifugal compressor as claimed in claim 1, it is characterized in that: rotor comprises the level Four impeller that arranges on main shaft and main shaft, the suction port of described one-level impeller is axially open, and suction tude and the outlet pipe of secondary, three grades and level Four impeller are that vertical major is to downward-extension.
3. centrifugal compressor as claimed in claim 2, it is characterized in that: the main shaft between one-level impeller and sencond stage impeller is provided with spring bearing and thrust bearing and covers in spring bearing and the spring bearing case in the thrust bearing outside, the bearing housing that also is provided with spring bearing and covers in this spring bearing on the main shaft of level Four impeller rear side, described spring bearing are tilting-pad bearing.
4. centrifugal compressor as claimed in claim 3, it is characterized in that: the one-level impeller is that bolt is connected with main shaft, secondary, three grades and level Four impeller are hot jacket and are loaded on main shaft.
5. centrifugal compressor as claimed in claim 4, is characterized in that: the weldment of all impellers for being welded into by superior alloy steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220619100 CN202926661U (en) | 2012-11-21 | 2012-11-21 | Centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220619100 CN202926661U (en) | 2012-11-21 | 2012-11-21 | Centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202926661U true CN202926661U (en) | 2013-05-08 |
Family
ID=48216629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220619100 Expired - Fee Related CN202926661U (en) | 2012-11-21 | 2012-11-21 | Centrifugal compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202926661U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405652A (en) * | 2014-10-14 | 2015-03-11 | 中航黎明锦西化工机械(集团)有限责任公司 | Labyrinth-seal oil-jet-lubrication pressurization centrifugal chlorine compressor |
| CN104405651A (en) * | 2014-10-14 | 2015-03-11 | 中航黎明锦西化工机械(集团)有限责任公司 | Centrifugal chlorine gas compressor |
| CN105673525A (en) * | 2016-03-09 | 2016-06-15 | 葫芦岛广和成源透平机械制造有限公司 | Multistage centrifugal chlorine gas compressor |
| CN111120351A (en) * | 2019-12-18 | 2020-05-08 | 沈阳透平机械股份有限公司 | Single-shaft isothermal centrifugal air compressor |
-
2012
- 2012-11-21 CN CN 201220619100 patent/CN202926661U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104405652A (en) * | 2014-10-14 | 2015-03-11 | 中航黎明锦西化工机械(集团)有限责任公司 | Labyrinth-seal oil-jet-lubrication pressurization centrifugal chlorine compressor |
| CN104405651A (en) * | 2014-10-14 | 2015-03-11 | 中航黎明锦西化工机械(集团)有限责任公司 | Centrifugal chlorine gas compressor |
| CN105673525A (en) * | 2016-03-09 | 2016-06-15 | 葫芦岛广和成源透平机械制造有限公司 | Multistage centrifugal chlorine gas compressor |
| CN111120351A (en) * | 2019-12-18 | 2020-05-08 | 沈阳透平机械股份有限公司 | Single-shaft isothermal centrifugal air compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20151121 |
|
| EXPY | Termination of patent right or utility model |