CN106246565A - A kind of supercritical carbon dioxide pump - Google Patents
A kind of supercritical carbon dioxide pump Download PDFInfo
- Publication number
- CN106246565A CN106246565A CN201610797161.7A CN201610797161A CN106246565A CN 106246565 A CN106246565 A CN 106246565A CN 201610797161 A CN201610797161 A CN 201610797161A CN 106246565 A CN106246565 A CN 106246565A
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- China
- Prior art keywords
- pump
- magnet rotor
- bearing
- carbon dioxide
- chuck
- 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.)
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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
- 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
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of supercritical carbon dioxide pump, outer magnet rotor is driven to rotate by driving means,, the effect of homopolar-repulsion attracting by the heteropole of magnetic material between outer magnet rotor and interior magnet rotor, the moment of torsion of transmission pumped (conveying) medium, outer magnet rotor transmits torque to interior magnet rotor by magnetic couple, interior magnet rotor is rotated by pump shaft impeller, makes impeller do work in medium, it is achieved the conveying of medium.Owing to being separation sleeve between outer magnet rotor and interior magnet rotor, interior magnet rotor and outer magnet rotor are isolated by separation sleeve, the most completely medium and interior magnet rotor be isolated from the outside by, separation sleeve is fixing with chuck to be connected, there is no relative motion between the two, junction is provided with sealing gasket, realize static seal between pump and medium, thus pump is substantially without with the presence of leakage, effectively reduce the unsafe factor in supercritical carbon dioxide or similar high-pressure medium course of conveying, improve the bearing capacity in conveying supercritical fluid and anti-cavitation ability.
Description
Technical field
The present invention relates to supercritical fluid media conveying technology field, particularly relate to a kind of supercritical carbon dioxide pump.
Background technology
Supercritical fluid has the diffusibility of similar gas and the solvability of liquid, has low-viscosity, low surface concurrently simultaneously
The characteristic of tension force so that supercritical fluid can quickly penetrate into the material of micropore.Extraction rate when thus be accordingly used in extraction
Quicker and effective than liquid, especially solvability can with temperature, pressure and polarity and change.
In the supercritical state, character can change carbon dioxide, and its density is bordering on liquid, and viscosity is bordering on gas, expands
Scattered coefficient is 100 times of liquid, thus has surprising solvability.With its solubilized many kinds of substance, then extract therein
Effective ingredient, is with a wide range of applications.Supercritical carbon dioxide is to study one of widest fluid at present, because its tool
Have critical condition easily to reach, chemical property torpescence, colorless and odorless are nontoxic, safety good, low price, purity high, easily
The features such as acquisition.Thus, supercritical carbon dioxide becomes current most widely used supercritical fluid, is widely used in food
In the industries such as product industry, cosmetics industry, chemical industry and medical industries.Therefore supercritical carbon dioxide extraction method is worth seeing
Good, and the pump carried for supercritical carbon dioxide also will play an important role in supercritical carbon dioxide is applied.
Supercritical fluid is typically under high pressure to prepare, thus in course of conveying, it is higher that pump bears pressure, because its pressure
Power reason, pump consequence when there is leakage is very serious, thus the magnetic force driving pump of shaftless envelope is particularly suited for supercritical fluid
Conveying.Magnetic force driving pump generally uses sliding bearing and uses pumped (conveying) medium to be lubricated, because Supercritical Fluids leads to liquid
Body difference, medium poor lubricity, it is therefore desirable to sliding bearing has more preferable self-lubricating property and intensity.And surpass simultaneously and face
Boundary's fluid easily gasifies and causes pump cavitation, so pump needs preferable anti-cavitation performance.
Therefore, how to provide a kind of supercritical carbon dioxide pump, to improve the bearing capacity in conveying supercritical fluid
With anti-cavitation ability, it is current those skilled in the art technical problems urgently to be resolved hurrily.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of supercritical carbon dioxide pump, to improve at conveying supercritical
Bearing capacity, bearing self-lubricating performance and strength problem in fluid and anti-cavitation ability.
In order to achieve the above object, the present invention provides following technical scheme:
A kind of supercritical carbon dioxide pump, including pump head, base and driving means, wherein, described pump head and described driving
Device direct connection, and both of which is fixed on described base, described pump head include the pump housing, impeller, bearing assembly, magnetic drive assembly and
Frame, described bearing assembly includes that pump shaft, bearing and chuck, described magnetic drive assembly and include interior magnet rotor, outer magnet rotor and separation sleeve,
The described pump housing is fixing on the bracket by described chuck, and described support is fixed on described base, and described pump shaft passes through institute
Stating bearing to be arranged on described chuck, described separation sleeve is connected with described chuck static seal, and described interior magnet rotor is arranged on described
One end of pump shaft and being built in described separation sleeve, described outer magnet rotor is connected with the drive shaft of described driving means and is enclosed within institute
Stating the outside of separation sleeve, drive described interior magnet rotor to rotate when described outer magnet rotor rotates, described impeller is arranged on described pump
The other end of axle.
Preferably, above-mentioned bearing includes outer ring and inner ring, and wherein, described inner ring is fixed on described pump shaft, described outer ring
Being fixed on described chuck, described outer ring is graphite material, and described inner ring is hard alloy material.
Preferably, above-mentioned bearing is that two sets, respectively first set bearing and second overlap bearing, wherein, described first sleeve
Holding the lateral edges being arranged on described pump shaft with described chuck junction, described second set bearing is arranged on described pump shaft with described
The opposite side edge of chuck junction.
Preferably, above-mentioned supercritical carbon dioxide pump also includes front attic base, rear attic base, interstage sleeve, the first thrusting plate and
Two thrusting plates, described second set bearing is than described first set bearing near described separation sleeve, and described second set bearing is interior with described
It is disposed with described rear attic base and described interstage sleeve between magnet rotor, is provided with between described rear attic base and described second set bearing
Described second thrusting plate, is provided with described front attic base between described impeller and described first set bearing, described front attic base is with described
Described first thrusting plate it is provided with between first set bearing.
Preferably, above-mentioned support is connected by ring flange with described driving means.
Preferably, above-mentioned driving means is motor.
Preferably, centered by above-mentioned driving means, line supports.
Preferably, the sealing means between above-mentioned separation sleeve and described chuck, between described chuck and the described pump housing is quiet
Seal, at both sealings, be provided with gasket seal.
The present invention provide supercritical carbon dioxide pump, including pump head, base and driving means, wherein, described pump head and
Described driving means direct connection, and both of which is fixed on described base, described pump head includes that the pump housing, impeller, bearing assembly, magnetic drive
Assembly and support, described bearing assembly includes that pump shaft, bearing and chuck, described magnetic drive assembly and include interior magnet rotor, outer magnet rotor
And separation sleeve, the described pump housing is fixing on the bracket by described chuck, and described support is fixed on described base, described pump
Axle is arranged on described chuck by described bearing, and described separation sleeve is connected with described chuck static seal, and described interior magnet rotor sets
Putting in one end of described pump shaft and be built in described separation sleeve, described outer magnet rotor is connected with the drive shaft of described driving means
And it is enclosed within the outside of described separation sleeve, and drive described interior magnet rotor to rotate when described outer magnet rotor rotates, described impeller is arranged
The other end at described pump shaft.
During use, driving means drives outer magnet rotor to rotate, by magnetic material between outer magnet rotor and interior magnet rotor
Heteropole is attracting, the effect of homopolar-repulsion, and the moment of torsion of transmission pumped (conveying) medium, outer magnet rotor is transmitted torque to by magnetic couple
Interior magnet rotor, in driving when outer magnet rotor rotates, magnet rotor rotates, and interior magnet rotor is rotated by pump shaft impeller, makes impeller
Do work in medium, it is achieved the conveying of medium.Owing to being separation sleeve between outer magnet rotor and interior magnet rotor, separation sleeve is by interior magnet rotor
Isolating with outer magnet rotor, medium and interior magnet rotor are isolated from the outside is connected fixing to, separation sleeve and chuck the most completely, both it
Between do not have relative motion, junction to be provided with sealing gasket, it is achieved static seal between pump and medium, its structural safety is reliable, thus pump
Substantially without with the presence of leakage, be effectively reduced in supercritical carbon dioxide or similar high-pressure medium course of conveying dangerous because of
Element, improves pump security reliability in running, improves the bearing capacity in conveying supercritical fluid and anti-cavitation
Ability.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is the present invention
Some embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to
These accompanying drawings obtain other accompanying drawing.
The supercritical carbon dioxide pump structure schematic diagram that Fig. 1 provides for the embodiment of the present invention；
The structural representation of the pump housing of the supercritical carbon dioxide pump that Fig. 2 provides for the embodiment of the present invention.
In figure 1 above-2:
The 1-pump housing, 2-sealing ring, 3-impeller nut, 4-impeller, attic base before 5-, 6-the first thrusting plate, 7-chuck, outside 8-
Circle, 9-pump shaft, 10-inner ring, attic base after 11-, 12-interstage sleeve, magnet rotor in 13-, 14-separation sleeve, the outer magnet rotor of 15-, 16-props up
Frame, 17-motor, 18-base.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under not making creative work premise, broadly falls into the scope of protection of the invention.
Refer to the supercritical carbon dioxide pump structure schematic diagram that Fig. 1 and Fig. 2, Fig. 1 provide for the embodiment of the present invention；Figure
The structural representation of the pump housing of the 2 supercritical carbon dioxide pumps provided for the embodiment of the present invention.
The supercritical carbon dioxide pump that the embodiment of the present invention provides, including pump head, base 18 and driving means, wherein, pump
Head and driving means direct connection, and both of which is fixed on base 18, pump head includes that the pump housing 1, impeller 4, bearing assembly, magnetic drive assembly
With support 16, bearing assembly includes pump shaft 9, bearing and chuck 7, magnetic drive assembly include interior magnet rotor 13, outer magnet rotor 15 and every
From set 14, the pump housing 1 is fixed on support 16 by chuck 7, and support 16 is fixed on base 18, and pump shaft 9 is arranged on by bearing
On chuck 7, separation sleeve 14 is connected with chuck 7 static seal, and interior magnet rotor 13 is arranged on one end of pump shaft 9 and is built in separation sleeve 14
In, outer magnet rotor 15 is connected with the drive shaft of driving means and is enclosed within the outside of separation sleeve 14, drives when outer magnet rotor 15 rotates
In dynamic, magnet rotor 13 rotates, and impeller 4 is fixed on the other end of pump shaft 9 by impeller nut 3, arranges sealing on the top of impeller 4
Ring 2 seals.
During use, driving means drives outer magnet rotor 15 to rotate, and driving means is motor 17, and outer magnet rotor 15 turns with interior magnetic
, the effect of homopolar-repulsion attracting by the heteropole of magnetic material between son 13, the moment of torsion of transmission pumped (conveying) medium, outer magnet rotor 15
Transmitting torque to interior magnet rotor 13 by magnetic couple, in driving when outer magnet rotor 15 rotates, magnet rotor 13 rotates, interior magnetic
Rotor 13 is rotated by pump shaft 9 impeller 4, makes impeller 4 do work in medium, it is achieved the conveying of medium.Due to outer magnet rotor 15
And being separation sleeve 14 between interior magnet rotor 13, interior magnet rotor 13 and outer magnet rotor 15 are isolated, the most completely medium by separation sleeve 14
It is isolated from the outside with interior magnet rotor 13 and is connected fixing with chuck 7 for, separation sleeve 14, there is no relative motion, junction between the two
Being provided with sealing gasket, it is achieved static seal between pump and medium, its structural safety is reliable, thus pump is substantially without with the presence of leakage, can
Effectively reduce the unsafe factor in supercritical carbon dioxide or similar high-pressure medium course of conveying, improve pump in running
Security reliability, improve conveying supercritical fluid in bearing capacity and anti-cavitation ability.
It addition, the flow passage components within the pump housing 1 use the rustless steel of high intensity and use bigger thickness, have higher
Bearing capacity.The operation that pump is safe and reliable when carrying supercritical carbon dioxide can be ensured by measures.The pump housing 1 has assembled
Cheng Houyu motor 17 is installed on base 18 jointly, and then overall use foundation bolt is fixed on installation foundation, if desired may be used
It is in the milk.The critical components such as the pump housing 1, chuck 7 and separation sleeve 14 use high-strength stainless steel material and are thickeied, and use
To bear the high pressure that supercritical carbon dioxide is had.The connected mode of self each parts of the pump housing 1 is direct connection, saves in assembling
Having gone the process of centering, assembly and disassembly is more convenient, make easy to maintenance fast.
The supercritical carbon dioxide pump that the embodiment of the present invention provides is a kind of for supercritical carbon dioxide or similar high pressure
Medium conveying horizontal magnetic force driven centrifugal pump, this magnetic force driving pump ensure that supercritical carbon dioxide in course of conveying not
Revealing and occur without cavitation, and can bear sufficiently high pressure, sliding bearing can long-time continuous stable work, it is ensured that pump exists
Operation safe and reliable during conveying supercritical carbon dioxide.
In order to optimize such scheme further, bearing includes outer ring 8 and inner ring 10, and wherein, inner ring 10 is fixed on pump shaft 9
On, outer ring 8 is fixed on chuck 7, and outer ring 8 is graphite material, and inner ring 10 is hard alloy material.Bearing is sliding bearing, sliding
The inner ring 10 of dynamic bearing uses the Hardmetal materials that intensity is higher, outer ring 8 to use the graphite material that greasy property is splendid, thus
Sliding bearing has preferable intensity and greasy property simultaneously, solves bearing self-lubricating performance and strength problem.Sliding bearing
Lubricating system is self-lubricating, and a part of medium is entered by the hole that chuck 7 is preset and realizes lubrication in sliding bearing Internal and external cycle gap.
The supercritical carbon dioxide pump that the embodiment of the present invention provides has the following advantages and feature technically:
1, the type of the selected pump housing 1 is centrifugal pump, simple and reliable for structure, safeguards easy to use；
2, the material of bearing used is the hard alloy and the graphite of excellent lubricating properties that intensity is higher, is hardly damaged and has
There is preferable greasy property, safe and reliable to operation；
3, key components and parts uses high intensity material and has larger thickness, and pressure-bearing grade is high, when conveying high-pressure medium
Accomplish safe and reliable.
In order to optimize such scheme further, bearing is two sets, respectively first set bearing and second set bearing, wherein,
First set bearing is arranged on a lateral edges of pump shaft 9 and chuck 7 junction, and the second set bearing is arranged on pump shaft 9 and is connected with chuck 7
The opposite side edge at place.
In order to optimize such scheme further, above-mentioned supercritical carbon dioxide pump also include front attic base 5, rear attic base 11,
Interstage sleeve the 12, first thrusting plate 6 and the second thrusting plate, the second set bearing is than first set bearing near separation sleeve 14, and second overlaps bearing
And it is disposed with rear attic base 11 and interstage sleeve 12 between interior magnet rotor 13, between rear attic base 11 and the second set bearing, is provided with second
Thrusting plate, is provided with front attic base 5, is provided with first and pushes away between front attic base 5 and first set bearing between impeller 4 and first set bearing
Power sheet 6, the first thrusting plate 6 and the second thrusting plate use hard alloy material, are ensureing that greasy property also ensure that intensity simultaneously,
It is hardly damaged, reliable.
In order to optimize such scheme further, support 16 is connected by ring flange with driving means, concrete, chuck 7
Periphery is connected with the pump housing 1 and support 16, and chuck 7 is provided with the step surface matched with the pump housing 1 and support 16, one end of chuck 7 with
Support 16 is fixing to be connected, and one end is fixing with the pump housing 1 to be connected, and support 16 other end is connected by ring flange with motor 17.
In order to optimize such scheme further, centered by driving means, line supports, and has stable and reliable operation ground advantage.
In order to optimize such scheme further, between separation sleeve 14 and chuck 7, be provided with between chuck 7 and the pump housing 1 close
Packing, i.e. sealing means between separation sleeve 14 and chuck 7, between chuck 7 and the pump housing 1 are static seal, equal at both sealings
It is provided with gasket seal.During pump housing work, there is no relative motion between separation sleeve 14 and chuck 7, between chuck 7 and the pump housing 1 yet
Not having relative motion, each junction all can link together to use static seal mode, relative to movable sealing, and static seal close
Sealing property is more preferable, and service life is longer, and reliability is higher, and the performance of anti-leak is higher, can reduce supercritical dioxy further
Change the unsafe factor in carbon or similar high-pressure medium course of conveying, improve pump security reliability in running, pass through
All replace movable sealing with static seal between above-mentioned each parts of the pump housing, be allowed to that there is preferable anti-leak performance, the most permissible
Effectively reduce the maintenance frequency, reduce maintenance cost.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple amendment to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty phase one
The widest scope caused.
Claims (8)
1. a supercritical carbon dioxide pump, it is characterised in that include pump head, base and driving means, wherein, described pump head and
Described driving means direct connection, and both of which is fixed on described base,
Described pump head includes that the pump housing, impeller, bearing assembly, magnetic drive assembly and support, described bearing assembly include pump shaft, bearing and
Chuck, described magnetic drives assembly and includes interior magnet rotor, outer magnet rotor and separation sleeve,
The described pump housing is fixed on the bracket by described chuck, and described support is fixed on described base,
Described pump shaft is arranged on described chuck by described bearing, and described separation sleeve is connected with described chuck static seal, described
Interior magnet rotor is arranged on one end of described pump shaft and is built in described separation sleeve, described outer magnet rotor and described driving means
Drive shaft connects and is enclosed within the outside of described separation sleeve, drives described interior magnet rotor to rotate when described outer magnet rotor rotates, institute
State impeller and be arranged on the other end of described pump shaft.
Supercritical carbon dioxide pump the most according to claim 1, it is characterised in that described bearing includes outer ring and inner ring,
Wherein, described inner ring is fixed on described pump shaft, and described outer ring is fixed on described chuck, and described outer ring is graphite material, institute
Stating inner ring is hard alloy material.
Supercritical carbon dioxide pump the most according to claim 2, it is characterised in that described bearing is two sets, respectively
A set of bearing and the second set bearing, wherein, described first set bearing is arranged on the side of described pump shaft and described chuck junction
Edge, described second set bearing is arranged on the opposite side edge of described pump shaft and described chuck junction.
Supercritical carbon dioxide pump the most according to claim 3, it is characterised in that also include front attic base, rear attic base, gear
Set, the first thrusting plate and the second thrusting plate,
Described second overlaps bearing than described first set bearing near described separation sleeve,
It is disposed with described rear attic base and described interstage sleeve, described rear attic base between described second set bearing and described interior magnet rotor
And it is provided with described second thrusting plate between described second set bearing,
Be provided with described front attic base between described impeller and described first set bearing, described front attic base and described first set bearing it
Between be provided with described first thrusting plate.
Supercritical carbon dioxide pump the most according to claim 1, it is characterised in that described support leads to described driving means
Cross ring flange to connect.
Supercritical carbon dioxide pump the most according to claim 1, it is characterised in that described driving means is motor.
Supercritical carbon dioxide pump the most according to claim 6, it is characterised in that centered by described driving means, line props up
Support.
Supercritical carbon dioxide pump the most according to claim 1, it is characterised in that described separation sleeve and described chuck it
Between, sealing means between described chuck and the described pump housing be static seal, be provided with gasket seal at both sealings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610797161.7A CN106246565A (en) | 2016-08-31 | 2016-08-31 | A kind of supercritical carbon dioxide pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610797161.7A CN106246565A (en) | 2016-08-31 | 2016-08-31 | A kind of supercritical carbon dioxide pump |
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| Publication Number | Publication Date |
|---|---|
| CN106246565A true CN106246565A (en) | 2016-12-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610797161.7A Pending CN106246565A (en) | 2016-08-31 | 2016-08-31 | A kind of supercritical carbon dioxide pump |
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| CN (1) | CN106246565A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681446A (en) * | 2019-01-15 | 2019-04-26 | 中国石油大学(华东) | Supercritical CO2Solvent pressurizing cenrrifugal pump |
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| CN206221302U (en) * | 2016-08-31 | 2017-06-06 | 兰州海兰德泵业有限公司 | A kind of supercritical carbon dioxide pump |
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2016
- 2016-08-31 CN CN201610797161.7A patent/CN106246565A/en active Pending
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| US4304532A (en) * | 1979-12-17 | 1981-12-08 | Mccoy Lee A | Pump having magnetic drive |
| CN102562606A (en) * | 2012-02-08 | 2012-07-11 | 兰州海兰德泵业有限公司 | Magnetic drive pump for liquefied natural gas delivery |
| CN103573682A (en) * | 2012-07-31 | 2014-02-12 | 上海佰诺泵阀有限公司 | Magnetic drive pump with bearing block |
| CN203297106U (en) * | 2013-05-14 | 2013-11-20 | 绍兴蓝德磁力科技有限公司 | Magnetic transmission vertical type pipeline pump |
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| CN109681446A (en) * | 2019-01-15 | 2019-04-26 | 中国石油大学(华东) | Supercritical CO2Solvent pressurizing cenrrifugal pump |
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Application publication date: 20161221 |