CN108425859B - Multistage compression structure of magnetic suspension high-power high-speed centrifugal machine - Google Patents
Multistage compression structure of magnetic suspension high-power high-speed centrifugal machine Download PDFInfo
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- CN108425859B CN108425859B CN201810082801.5A CN201810082801A CN108425859B CN 108425859 B CN108425859 B CN 108425859B CN 201810082801 A CN201810082801 A CN 201810082801A CN 108425859 B CN108425859 B CN 108425859B
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- stage impeller
- speed
- assembly
- compression
- spiral case
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Classifications
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/06—Units comprising pumps and their driving means the pump being electrically driven
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- 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
- F04D29/05—Shafts or bearings, or assemblies thereof, specially adapted for elastic fluid pumps
- F04D29/056—Bearings
- F04D29/058—Bearings magnetic; electromagnetic
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a multistage compression structure of a magnetic suspension high-power high-speed centrifugal machine, which comprises the following components: the high-speed motor spindle is arranged on the motor in a penetrating way, the sealing assembly A and the sealing assembly B are respectively sleeved at two ends of the high-speed motor spindle, the first-stage impeller volute compression assembly and the second-stage impeller volute compression assembly are respectively arranged on the outer sides of the sealing assembly A and the sealing assembly B, the high-speed magnetic suspension bearing assembly A and the high-speed magnetic suspension bearing assembly B are sleeved on the high-speed motor spindle, the high-speed high-power motor is high in bearing linear speed and high in rotating speed due to high power, and the bearing problems such as lubricating oil sealing and the like are solved, and the problems of the motor, the bearing, the centrifugal machine and the multistage compression structure are solved.
Description
Technical Field
The invention relates to the field of compressors, in particular to a multistage compression structure of a magnetic suspension high-power high-speed centrifugal machine.
Background
The compressor is a driven fluid machine for lifting low-pressure gas into high-pressure gas, and the traditional centrifugal high-power 300-80000KW and 5000-30000rpm multistage compressor has a structural mode that a motor is accelerated by a speed increaser to reach the required rotating speed of the centrifugal compressor. Completely through a mechanical acceleration mode. Because the speed increaser is mechanically driven and lubricates part, part of power is lost, the loss power is usually 2% -4%, and the speed increaser is a structure of a motor speed increaser and a centrifugal machine, and the speed increaser has the characteristics of complex structure, large volume, large weight and the like. The centrifugal machine of the high-speed motor for comprehensive calculation is increased by about 3% compared with the centrifugal machine which is increased by a speed increaser. The second mode turbine drags the centrifugal machine to rotate, and the work efficiency of the industrial power generation 300MW turbine is approximately 47%. The power efficiency of the power generation turbine of the industrial dragging turbine is about 43 percent, and is 3 to 5 percent lower than that of the industrial power generation turbine, because the power generation turbine unit is a high-power turbine unit and is a multi-stage turbine, the residual speed kinetic energy of other stages of the multi-stage turbine can be utilized by the next stage, the internal efficiency of the power generation high-power turbine is improved, if the power generation high-power turbine is driven by a motor, the power conversion mechanical efficiency is removed by 98 percent, and the power conversion electric energy dragging motor of the comprehensive calculation power generation turbine is improved by about 3 percent compared with that of the industrial dragging turbine.
Disclosure of Invention
The invention aims to: the invention aims to solve the defects of the prior art, provides a multistage compression structure of a magnetic suspension high-power high-speed centrifugal machine, solves the bearing problems of high linear speed, high rotating speed, lubricating oil sealing and the like of a high-rotating speed and high-power motor due to high rotating speed and high power, and simultaneously solves the problems of the motor, the bearing, the centrifugal machine and the multistage compression structure and solves the rotor dynamics problem.
The technical scheme is as follows: in order to achieve the above object, the present invention provides a multistage compression structure of a magnetic levitation high-power high-speed centrifuge, comprising: base and install the motor on the base, it still includes: the high-speed motor spindle is sleeved with a high-speed magnetic suspension bearing assembly A and a high-speed magnetic suspension bearing assembly B, a three-stage impeller volute compression assembly and a five-stage impeller volute compression assembly close to the high-speed magnetic suspension bearing assembly A are sequentially sleeved on the high-speed motor spindle, and a four-stage impeller volute compression assembly and a six-stage impeller volute compression assembly close to the high-speed magnetic suspension bearing assembly B are sequentially sleeved on the high-speed motor spindle. The center distance of the two bearings is reduced through the middle of the two spiral cases, the motor and the main separator simultaneously use the high-speed magnetic suspension bearings at the two ends, one set of centrifugal machine is avoided, the motor enables one set of bearing, the cost is reduced, meanwhile, the rigid connection structure can be designed, the middle links are reduced, the rigidity of the rotor is greatly improved, the first-order second-order critical rotating speed of the rotor is improved, the stability, the reliability and the efficiency of the high-speed rotor are improved, and the effects of energy conservation and emission reduction are achieved.
As a further preferred aspect of the present invention, the high-speed magnetic bearing assembly a and the high-speed magnetic bearing assembly B, which are fitted over the main shaft of the high-speed motor, are respectively abutted against one side of the seal assembly a and the seal assembly B.
As a further preferable mode of the invention, the high-speed motor main shaft is a magnetic suspension bearing, and the problem that lubricating oil enters a centrifugal unit can not be caused without oil lubrication because of a magnetic suspension bearing structure.
As a further preference of the invention, the spiral case on the five-stage impeller spiral case compression assembly and the six-stage impeller spiral case compression assembly are respectively fixedly connected with the flanges at the two ends of the motor shell, thereby ensuring the dimensional stability and the use safety.
As a further preferred aspect of the present invention, the high-speed magnetic bearing assembly a is fixed to the magnetic bearing housing a by means of assembly, and the high-speed magnetic bearing assembly B is fixed to the magnetic bearing housing B by means of assembly.
As a further preferred mode of the invention, two ends of the three-stage impeller volute compression assembly are respectively connected with the magnetic suspension bearing seat A and the five-stage impeller volute compression assembly, and two ends of the four-stage impeller volute compression assembly are respectively connected with the magnetic suspension bearing seat B and the six-stage impeller volute compression assembly.
As a further preferable mode of the invention, the scroll casing arranged on the three-stage impeller scroll casing compression assembly and the scroll casing arranged on the five-stage impeller scroll casing compression assembly are installed and fixed through bolts, and the scroll casing arranged on the four-stage impeller scroll casing compression assembly and the scroll casing arranged on the six-stage impeller scroll casing compression assembly are installed and fixed through bolts.
As a further preferred mode of the invention, the first-stage impeller volute compression assembly and the high-speed magnetic suspension bearing assembly A are fixed together in a threaded connection mode.
As a further preferable mode of the invention, the two-stage impeller volute compression assembly and the high magnetic suspension bearing seat B are fixed together in a threaded connection mode.
The beneficial effects are that: the multistage compression structure of the magnetic suspension high-power high-speed centrifugal machine is characterized in that a magnetic suspension bearing is added through a motor, a high-speed motor main shaft is used, so that a centrifugal impeller and a motor stator are directly driven, a speed increaser is not arranged, the bearing is of a magnetic suspension bearing structure, a lubricating system is not arranged, the speed increaser and the lubricating power loss are reduced by 3%, meanwhile, the efficiency of an electric motor driven by an industrial steam turbine through conversion of electric energy is improved by about 3%, the multistage compression structure works according to 300kw-80000kw, namely power is saved by 15-2400 DEG per hour, each day works according to 20 hours, namely power is saved by 180-48000 DEG per day, the power is saved by 6.4-1728 ten thousand DEG per year, if the multistage compression structure is used according to 1 yuan per degree of industrial power, the use cost is greatly reduced, and the energy saving and emission reduction effects are achieved.
Drawings
Fig. 1 is a schematic diagram of the operation of the present invention.
Detailed Description
The invention is further elucidated below in conjunction with the drawings.
As shown in the attached drawings, the multistage compression structure of the magnetic suspension high-power high-speed centrifugal machine comprises the following components: the device comprises a first-stage impeller volute compression assembly 1, sealing assemblies A2 at two ends, a high-speed magnetic suspension bearing assembly A3, a third-stage impeller volute compression assembly 4, a fifth-stage impeller volute compression assembly 5, a motor 6, a base 7, a sixth-stage impeller volute compression assembly 8, a fourth-stage impeller volute compression assembly 9, a high-speed magnetic suspension bearing assembly B10, a sealing assembly B11, a second-stage impeller volute compression assembly 12 and a high-speed motor spindle 13.
The outer sides of the sealing component A2 and the sealing component B11 are respectively provided with a first-stage impeller volute compression component 1 and a second-stage impeller volute compression component 12, a high-speed magnetic suspension bearing component A3 and a high-speed magnetic suspension bearing component B10 are sleeved on a high-speed motor main shaft 13, a three-stage impeller volute compression component 4 and a five-stage impeller volute compression component 5 are closely adjacent to the high-speed magnetic suspension bearing component A3, impellers 16 respectively arranged on the three-stage impeller volute compression component 4 and the five-stage impeller volute compression component 5 are sequentially sleeved on the high-speed motor main shaft 13, and impellers 16 respectively arranged on a four-stage impeller volute compression component 9 and a six-stage impeller volute compression component 8 closely adjacent to the high-speed magnetic suspension bearing component B10 are sequentially sleeved on the high-speed motor main shaft 13.
The gas outlet of the first-stage impeller volute compression assembly 1 is connected with the gas inlet of the second-stage impeller volute compression assembly 12 through a pipeline, the gas outlet of the second-stage impeller volute compression assembly 12 is connected with the gas inlet of the third-stage impeller volute compression assembly 4 through a pipeline, the gas outlet of the third-stage impeller volute compression assembly 4 is connected with the gas inlet of the fourth-stage impeller volute compression assembly 9 through a pipeline, the gas outlet of the fourth-stage impeller volute compression assembly 9 is connected with the gas inlet of the fifth-stage impeller volute compression assembly 5 through a pipeline, the gas outlet of the fifth-stage impeller volute compression assembly 5 is connected with the gas inlet of the sixth-stage impeller volute compression assembly 8 through a pipeline, and the gas outlet of the sixth-stage impeller volute compression assembly 8 is connected with a six-stage cooler flange.
Examples
The high-speed motor spindle 13 is arranged on the motor 6 in a penetrating way, gas enters the impeller 16 from the leftmost side of the first-stage impeller volute compression assembly 1 to work so as to improve the flow speed of the gas, then the speed of the gas is reduced through the diffuser 14, the gas pressure is increased and then enters the volute 15 of the first-stage impeller volute compression assembly 1, the gas exits from the outlet of the volute 15 and is cooled through the cooler, then enters the second-stage impeller volute compression assembly 12 to be further compressed, and the steps are repeated, and the gas output from the gas outlet of the second-stage impeller volute compression assembly 12 is cooled through the cooler and then sequentially passes through the third-stage impeller volute compression assembly 4, the fourth-stage impeller volute compression assembly 9, the fifth-stage impeller volute compression assembly 5 and the sixth-stage impeller volute compression assembly 8 to finally obtain compressed gas medium.
The foregoing embodiments are merely illustrative of the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and to implement the same, not to limit the scope of the present invention. All changes and modifications that come within the meaning and range of equivalency of the invention are to be embraced within their scope.
Claims (7)
1. A multistage compression structure of a magnetic suspension high-power high-speed centrifuge comprises: base (7) and install motor (6) on base (7), its characterized in that: it also includes: a high-speed motor main shaft (13) penetrating through a motor (6), a sealing component A (2) and a sealing component B (11) respectively sleeved at two ends of the high-speed motor main shaft (13), a first-stage impeller volute compression component (1) and a second-stage impeller volute compression component (12) are respectively arranged at the outer sides of the sealing component A (2) and the sealing component B (11), a high-speed magnetic suspension bearing component A (3) and a high-speed magnetic suspension bearing component B (10) are sleeved on the high-speed motor main shaft (13) in a sleeved mode, and a three-stage impeller volute compression component (4) and a five-stage impeller volute compression component (5) close to the high-speed magnetic suspension bearing component A (3) are sequentially sleeved on the high-speed motor main shaft (13), and a four-stage impeller volute compression component (9) and a six-stage impeller volute compression component (8) close to the high-speed magnetic suspension bearing component B (10) are sequentially sleeved on the high-speed motor main shaft (13);
The high-speed magnetic suspension bearing assembly A (3) and the high-speed magnetic suspension bearing assembly B (10) sleeved on the high-speed motor main shaft (13) are respectively abutted against one side of the sealing assembly A (2) and one side of the sealing assembly B (11), and the high-speed motor main shaft (13) is a magnetic suspension bearing;
The gas outlet of the first-stage impeller spiral case compression assembly (1) is connected with the gas inlet of the second-stage impeller spiral case compression assembly (12) through a pipeline, the gas outlet of the second-stage impeller spiral case compression assembly (12) is connected with the gas inlet of the third-stage impeller spiral case compression assembly (4) through a pipeline, the gas outlet of the third-stage impeller spiral case compression assembly (4) is connected with the gas inlet of the fourth-stage impeller spiral case compression assembly (9) through a pipeline, the gas outlet of the fourth-stage impeller spiral case compression assembly (9) is connected with the gas inlet of the fifth-stage impeller spiral case compression assembly (5) through a pipeline, the gas outlet of the fifth-stage impeller spiral case compression assembly (5) is connected with the gas inlet of the sixth-stage impeller spiral case compression assembly (8) through a pipeline, and the gas outlet of the sixth-stage impeller spiral case compression assembly (8) is connected with a six-stage cooler flange.
2. The multi-stage compression structure of a magnetic levitation high-power high-speed centrifuge according to claim 1, wherein: the spiral case (15) on the five-stage impeller spiral case compression assembly (5) and the six-stage impeller spiral case compression assembly (8) are fixedly connected with flanges at two ends of the shell of the motor (6) respectively.
3. The multi-stage compression structure of a magnetic levitation high-power high-speed centrifuge according to claim 1, wherein: the high-speed magnetic suspension bearing assembly A (3) is fixed on the magnetic suspension bearing seat A (31), and the high-speed magnetic suspension bearing assembly B (10) is fixed on the magnetic suspension bearing seat B (101).
4. The multi-stage compression structure of a magnetic levitation high-power high-speed centrifuge according to claim 1, wherein: two ends of the three-stage impeller volute compression assembly (4) are respectively connected with the magnetic suspension bearing seat A (31) and the five-stage impeller volute compression assembly (5), and two ends of the four-stage impeller volute compression assembly (9) are respectively connected with the magnetic suspension bearing seat B (101) and the six-stage impeller volute compression assembly (8).
5. The multi-stage compression structure of a magnetic levitation high-power high-speed centrifuge according to claim 1, wherein: the spiral case (15) that is equipped with on tertiary impeller spiral case compression subassembly (4) and spiral case (15) that are equipped with on five-stage impeller spiral case compression subassembly (5) pass through the bolt installation and are fixed, spiral case (15) that are equipped with on four-stage impeller spiral case compression subassembly (9) and spiral case (15) that are equipped with on six-stage impeller spiral case compression subassembly (8) pass through the bolt installation and are fixed.
6. The multi-stage compression structure of a magnetic levitation high-power high-speed centrifuge according to claim 1, wherein: the first-stage impeller volute compression assembly (1) and the high-speed magnetic suspension bearing assembly A (3) are fixed together in a threaded connection mode.
7. The multi-stage compression structure of a magnetic levitation high-power high-speed centrifuge according to claim 1, wherein: the two-stage impeller volute compression assembly (12) and the magnetic suspension bearing seat B (101) are fixed together in a threaded connection mode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810082801.5A CN108425859B (en) | 2018-01-29 | 2018-01-29 | Multistage compression structure of magnetic suspension high-power high-speed centrifugal machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810082801.5A CN108425859B (en) | 2018-01-29 | 2018-01-29 | Multistage compression structure of magnetic suspension high-power high-speed centrifugal machine |
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| CN108425859A CN108425859A (en) | 2018-08-21 |
| CN108425859B true CN108425859B (en) | 2024-08-27 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109268282A (en) * | 2018-09-30 | 2019-01-25 | 武汉格瑞拓机械有限公司 | A kind of integral type centrifugal compressor |
| CN113669266A (en) * | 2021-07-27 | 2021-11-19 | 鑫磊压缩机股份有限公司 | An MCL type compressor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104421188A (en) * | 2013-08-26 | 2015-03-18 | 珠海格力电器股份有限公司 | Multistage centrifugal compressor and air conditioning unit |
| CN106574635A (en) * | 2014-08-13 | 2017-04-19 | 三菱重工业株式会社 | Centrifugal rotary machine |
| CN208203604U (en) * | 2018-01-29 | 2018-12-07 | 固耐重工（苏州）有限公司 | Magnetic suspension Large-power High-Speed centrifuge multi-stage compression structure |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0972292A (en) * | 1995-09-07 | 1997-03-18 | Toyo Eng Corp | Combined multi-stage centrifugal compressor equipped with two groups of impellers on the same axis |
| EP1069313B1 (en) * | 1999-07-16 | 2005-09-14 | Man Turbo Ag | Turbo compressor |
| JP5697243B2 (en) * | 2011-02-25 | 2015-04-08 | 三菱重工コンプレッサ株式会社 | Rotating shaft assembly and centrifugal compressor provided with the same |
| CN203035606U (en) * | 2012-12-28 | 2013-07-03 | 沈阳透平机械股份有限公司 | Impeller of MCO-type centrifugal compressor |
| US11421696B2 (en) * | 2014-12-31 | 2022-08-23 | Ingersoll-Rand Industrial U.S., Inc. | Multi-stage compressor with single electric direct drive motor |
| CN104976146B (en) * | 2015-06-19 | 2017-09-26 | 同济大学 | A kind of fuel battery engines directly drive air compressor with two-step supercharging |
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2018
- 2018-01-29 CN CN201810082801.5A patent/CN108425859B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104421188A (en) * | 2013-08-26 | 2015-03-18 | 珠海格力电器股份有限公司 | Multistage centrifugal compressor and air conditioning unit |
| CN106574635A (en) * | 2014-08-13 | 2017-04-19 | 三菱重工业株式会社 | Centrifugal rotary machine |
| CN208203604U (en) * | 2018-01-29 | 2018-12-07 | 固耐重工（苏州）有限公司 | Magnetic suspension Large-power High-Speed centrifuge multi-stage compression structure |
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| CN108425859A (en) | 2018-08-21 |
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