CN206221302U - A kind of supercritical carbon dioxide pump - Google Patents
A kind of supercritical carbon dioxide pump Download PDFInfo
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- CN206221302U CN206221302U CN201621026199.6U CN201621026199U CN206221302U CN 206221302 U CN206221302 U CN 206221302U CN 201621026199 U CN201621026199 U CN 201621026199U CN 206221302 U CN206221302 U CN 206221302U
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- magnet rotor
- bearing
- pump
- carbon dioxide
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Abstract
The utility model discloses a kind of supercritical carbon dioxide pump, outer magnet rotor is driven to rotate by drive device, by the way that the heteropole of magnetic material is attracting, homopolar-repulsion effect between outer magnet rotor and interior magnet rotor, transmit the moment of torsion of pumped (conveying) medium, i.e. outer magnet rotor transmits torque to interior magnet rotor by magnetic couple, interior magnet rotor is rotated by pump shaft impeller, impeller is done work in medium, realizes the conveying of medium.Due to being separation sleeve between outer magnet rotor and interior magnet rotor, separation sleeve isolates interior magnet rotor and outer magnet rotor, also completely medium and interior magnet rotor be isolated from the outside by, separation sleeve is fixedly connected with chuck, between the two without relative motion, junction is provided with sealing gasket, realize static seal between pump and medium, thus pump does not have leakage and exists substantially, the unsafe factor in supercritical carbon dioxide or similar high-pressure medium course of conveying is effectively reduced, bearing capacity and anti-cavitation ability in supercritical fluid is conveyed is improve.
Description
Technical field
The utility model is related to supercritical fluid media conveying technology field, more particularly to a kind of supercritical carbon dioxide
Pump.
Background technology
Supercritical fluid has the diffusivity of similar gas and the solvability of liquid, while have low-viscosity concurrently, low surface
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 change with temperature, pressure and polarity.
In the supercritical state, property can change carbon dioxide, and its density is bordering on liquid, and viscosity is bordering on gas, expand
Scattered coefficient is 100 times of liquid, thus with surprising solvability.Many kinds of substance is can dissolve with it, is then extracted therein
Active ingredient, is with a wide range of applications.Supercritical carbon dioxide is to study one of widest fluid at present, because it has
There is critical condition easily to reach, chemical property torpescence, colorless and odorless is nontoxic, security is good, cheap, purity is high, easy
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
It is good, and the pump for being used for supercritical carbon dioxide conveying will also play an important role in supercritical carbon dioxide application.
Supercritical fluid is typically obtained under high pressure, thus in course of conveying, and it is higher that pump bears pressure, because it is pressed
Power reason, pump consequence when leaking is very serious, thus the magnetic force driving pump without axle envelope is particularly suited for supercritical fluid
Conveying.Magnetic force driving pump is generally used sliding bearing and is lubricated using pumped (conveying) medium, because the logical liquid of Supercritical Fluids
Body difference, medium poor lubricity, it is therefore desirable to which 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, a kind of supercritical carbon dioxide pump how is provided, to improve the bearing capacity in supercritical fluid is conveyed
It is current those skilled in the art technical problem urgently to be resolved hurrily with anti-cavitation ability.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of supercritical carbon dioxide pump, super in conveying to improve
Bearing capacity, bearing self-lubricating performance and strength problem and anti-cavitation ability in critical fluids.
In order to achieve the above object, the utility model provides following technical scheme：
A kind of supercritical carbon dioxide pump, including pump head, base and drive device, wherein, the pump head and the driving
Device direct connection, and both are each attached on the base, the pump head includes that the pump housing, impeller, bearing assembly, magnetic drive component and branch
Frame, the bearing assembly includes pump shaft, bearing and chuck, and the magnetic drives component includes interior magnet rotor, outer magnet rotor and separation sleeve,
The pump housing is fixed on the bracket by the chuck, and the support is fixed on the base, and the pump shaft passes through institute
State bearing to be arranged on the chuck, the separation sleeve is connected with the chuck static seal, the interior magnet rotor is arranged on described
One end of pump shaft and it is built in the separation sleeve, the outer magnet rotor is connected with the drive shaft of the drive device and is enclosed within institute
The outside of separation sleeve is stated, drives the interior magnet rotor to rotate when the outer magnet rotor is rotated, the impeller is arranged on the pump
The other end of axle.
Preferably, above-mentioned bearing includes outer ring and inner ring, wherein, the inner ring is fixed on the pump shaft, the outer ring
It is fixed on the chuck, the outer ring is graphite material, the inner ring is hard alloy material.
Preferably, above-mentioned bearing is two sets, respectively first set bearing and second set of bearing, wherein, the first set axle
Hold the lateral edges for being arranged on the pump shaft and the chuck junction, second set of bearing be arranged on the pump shaft with it is described
Another lateral edges of chuck junction.
Preferably, above-mentioned supercritical carbon dioxide pump also includes preceding attic base, rear attic base, interstage sleeve, the first thrusting plate and the
Two thrusting plates, second set of bearing is than the first set bearing near the separation sleeve, and second set of bearing is interior with described
The rear attic base and the interstage sleeve are disposed between magnet rotor, are provided between the rear attic base and second set of bearing
Second thrusting plate, is provided with the preceding attic base between the impeller and the first set bearing, the preceding attic base with it is described
First thrusting plate is provided between first set bearing.
Preferably, above-mentioned support is connected with the drive device by ring flange.
Preferably, above-mentioned drive device is motor.
Preferably, line support centered on above-mentioned drive device.
Preferably, the sealing means between above-mentioned separation sleeve and the chuck, between the chuck and the pump housing are quiet
Sealing, gasket seal is provided with both sealings.
The supercritical carbon dioxide pump that the utility model is provided, including pump head, base and drive device, wherein, the pump
Head and the drive device direct connection, and both are each attached on the base, the pump head include the pump housing, impeller, bearing assembly,
Magnetic drives component and support, and the bearing assembly includes pump shaft, bearing and chuck, and the magnetic drives component includes interior magnet rotor, outer magnetic
Rotor and separation sleeve, the pump housing are fixed on the bracket by the chuck, and the support is fixed on the base, institute
State pump shaft to be arranged on the chuck by the bearing, the separation sleeve is connected with the chuck static seal, the interior magnetic turns
Son is arranged on one end of the pump shaft and is built in the separation sleeve, the drive shaft of the outer magnet rotor and the drive device
The outside of the separation sleeve is connected and be enclosed within, drives the interior magnet rotor to rotate when the outer magnet rotor is rotated, the impeller
It is arranged on the other end of the pump shaft.
When using, drive device drives outer magnet rotor rotation, by magnetic material between outer magnet rotor and interior magnet rotor
Heteropole is attracting, homopolar-repulsion effect, transmits the moment of torsion of pumped (conveying) medium, i.e., outer magnet rotor is transmitted torque to by magnetic couple
Interior magnet rotor, drives interior magnet rotor to rotate when outer magnet rotor is rotated, and interior magnet rotor is rotated by pump shaft impeller, makes impeller
Do work in medium, realize the conveying of medium.Due to being separation sleeve between outer magnet rotor and interior magnet rotor, separation sleeve is by interior magnet rotor
With the isolation of outer magnet rotor, also completely medium and interior magnet rotor be isolated from the outside by, separation sleeve is fixedly connected with chuck, both it
Between there is no relative motion, junction is provided with sealing gasket, realizes static seal between pump and medium, and its structure is safe and reliable, thus pump
Substantially leakage is not had to exist, be effectively reduced in supercritical carbon dioxide or similar high-pressure medium course of conveying it is dangerous because
Element, improves pump security reliability in the process of running, improves the bearing capacity in supercritical fluid is conveyed and anti-cavitation
Ability.
Brief description of the drawings
In order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or the accompanying drawing to be used needed for description of the prior art is briefly described, it should be apparent that, drawings in the following description are these
Some embodiments of utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to these accompanying drawings.
The structural representation of the supercritical carbon dioxide pump that Fig. 1 is provided for the utility model embodiment；
The structural representation of the pump housing of the supercritical carbon dioxide pump that Fig. 2 is provided for the utility model embodiment.
In figure 1 above -2：
The 1- pump housings, 2- sealing rings, 3- impeller nuts, 4- impellers, attic base before 5-, the thrusting plates of 6- first, 7- chucks, outside 8-
Circle, 9- pump shafts, 10- inner rings, attic base after 11-, 12- interstage sleeves, magnet rotor in 13-, 14- separation sleeves, the outer magnet rotors of 15-, 16- branch
Frame, 17- motors, 18- bases.
Specific embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, is clearly and completely described, it is clear that retouched to the technical scheme in the utility model embodiment
The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of the utility model protection.
Refer to the structural representation of the supercritical carbon dioxide pump that Fig. 1 and Fig. 2, Fig. 1 are provided for the utility model embodiment
Figure；The structural representation of the pump housing of the supercritical carbon dioxide pump that Fig. 2 is provided for the utility model embodiment.
The supercritical carbon dioxide pump that the utility model embodiment is provided, including pump head, base 18 and drive device, its
In, pump head and drive device direct connection, and both are each attached on base 18, pump head includes the pump housing 1, impeller 4, bearing assembly, magnetic
Component and support 16 are driven, bearing assembly includes pump shaft 9, bearing and chuck 7, and magnetic drives component includes interior magnet rotor 13, outer magnet rotor
15 and separation sleeve 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 passes through bearing
Be arranged on chuck 7, separation sleeve 14 is connected with the static seal of chuck 7, interior magnet rotor 13 be arranged on one end of pump shaft 9 and be built in every
In set 14, outer magnet rotor 15 is connected with the drive shaft of drive device and is enclosed within the outside of separation sleeve 14, when 15 turns of outer magnet rotor
Magnet rotor 13 is rotated in being driven when dynamic, and impeller 4 is fixed on the other end of pump shaft 9 by impeller nut 3, is set on the top of impeller 4
Sealing ring 2 is put to be sealed.
When using, drive device drives outer magnet rotor 15 to rotate, and drive device is motor 17, and outer magnet rotor 15 turns with interior magnetic
By the way that the heteropole of magnetic material is attracting, homopolar-repulsion effect between son 13, the moment of torsion of pumped (conveying) medium, i.e., outer magnet rotor 15 are transmitted
Interior magnet rotor 13 is transmitted torque to by magnetic couple, drives interior magnet rotor 13 to rotate when outer magnet rotor 15 is rotated, interior magnetic
Rotor 13 is rotated by the impeller 4 of pump shaft 9, impeller 4 is done work in medium, realizes the conveying of medium.Due to outer magnet rotor 15
It is separation sleeve 14 between interior magnet rotor 13, separation sleeve 14 isolates interior magnet rotor 13 and outer magnet rotor 15, also completely medium
It is isolated from the outside separation sleeve 14 is fixedly connected with chuck 7, between the two no relative motion, junction with interior magnet rotor 13
Sealing gasket is provided with, static seal between pump and medium is realized, its structure is safe and reliable, thus pump does not have leakage presence substantially, can
The unsafe factor in supercritical carbon dioxide or similar high-pressure medium course of conveying is effectively reduced, pump is improved in the process of running
Security reliability, improve convey supercritical fluid in bearing capacity and anti-cavitation ability.
In addition, the flow passage components inside the pump housing 1 use the stainless steel of high intensity and use larger thickness, with higher
Bearing capacity.Can ensure the pump operation safe and reliable when supercritical carbon dioxide is conveyed by measures.The pump housing 1 has been assembled
Cheng Houyu motors 17 are installed on base 18 jointly, then overall to be fixed on installation foundation using foundation bolt, if necessary may be used
It is in the milk.Critical component is using high-strength stainless steel material and is thickeied for the pump housing 1, chuck 7 and separation sleeve 14 etc., uses
To bear the high pressure that supercritical carbon dioxide has.The connected mode of the pump housing 1 itself each parts is direct connection, is saved in assembling
The process of centering is gone, assembly and disassembly is more convenient, made easy to maintenance quick.
The supercritical carbon dioxide pump that the utility model embodiment is provided is a kind of for supercritical carbon dioxide or similar
The horizontal magnetic force driven centrifugal pump of high-pressure medium conveying, the magnetic force driving pump ensure that supercritical carbon dioxide in course of conveying
In do not reveal and occur without cavitation, and sufficiently high pressure can be born, sliding bearing being capable of long-time continuous stable work, it is ensured that
The safe and reliable operation during supercritical carbon dioxide is conveyed of pump.
In order to further optimize such scheme, bearing includes outer ring 8 and inner ring 10, 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
Using intensity Hardmetal materials higher, outer ring 8 uses the splendid graphite material of greasy property to the inner ring 10 of dynamic bearing, 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 default hole of chuck 7 realizes lubrication in ring gap inside and outside sliding bearing.
The supercritical carbon dioxide pump that the utility model embodiment is provided technically has advantages below and feature：
1st, the type of the selected pump housing 1 is centrifugal pump, simple and reliable for structure, is safeguarded easy to use；
2nd, the material of bearing used is the graphite of intensity hard alloy higher and excellent lubricating properties, is hardly damaged and has
There is preferable greasy property, it is safe and reliable to operation；
3rd, key components and parts are using high intensity material and have larger thickness, and pressure-bearing grade is high, in conveying high-pressure medium
Accomplish safe and reliable.
In order to further optimize such scheme, bearing is two sets, respectively first set bearing and second set of bearing, wherein,
First set bearing is arranged on a lateral edges of pump shaft 9 and the junction of chuck 7, and second set of bearing is arranged on pump shaft 9 and is connected with chuck 7
Another lateral edges at place.
In order to further optimize such scheme, above-mentioned supercritical carbon dioxide pump also include preceding attic base 5, rear attic base 11,
Interstage sleeve 12, the first thrusting plate 6 and the second thrusting plate, second set of bearing is than first set bearing near separation sleeve 14, second set of bearing
Rear attic base 11 and interstage sleeve 12 are disposed between interior magnet rotor 13, second is provided between rear attic base 11 and second set of bearing
Thrusting plate, is provided with preceding attic base 5 between impeller 4 and first set bearing, first is provided between preceding attic base 5 and first set bearing and is pushed away
Power piece 6, the first thrusting plate 6 and the second thrusting plate use hard alloy material, and intensity is also ensure that simultaneously in guarantee greasy property,
It is hardly damaged, it is reliable.
In order to further optimize such scheme, support 16 is connected with drive device by ring flange, specifically, chuck 7
Periphery is connected with the pump housing 1 and support 16, and chuck 7 is provided with the step surface being engaged with the pump housing 1 and support 16, one end of chuck 7 with
Support 16 is fixedly connected, and one end is fixedly connected with the pump housing 1, and the other end of support 16 is connected with motor 17 by ring flange.
In order to further optimize such scheme, line support centered on drive device, with stable and reliable operation ground advantage.
In order to further optimize such scheme, it is provided between separation sleeve 14 and chuck 7, between chuck 7 and the pump housing 1 close
Sealing means between packing, i.e. 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.When the pump housing works, there is no relative motion between separation sleeve 14 and chuck 7, between chuck 7 and the pump housing 1
There is no relative motion, each junction can be linked together using static seal mode, relative to dynamic sealing, static seal it is close
More preferably, service life is longer, and reliability is higher, and the performance of anti-leak is stronger, can further reduce overcritical dioxy for sealing property
Change the unsafe factor in carbon or similar high-pressure medium course of conveying, improve pump security reliability in the process of running, pass through
Replace dynamic sealing with static seal between above-mentioned each part of the pump housing, be allowed to that there is preferable leak-proof energy, so can be with
The maintenance frequency is effectively reduced, maintenance cost is reduced.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality
Type.Various modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can in other embodiments be realized in the case where spirit or scope of the present utility model are not departed from.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (8)
1. a kind of supercritical carbon dioxide pump, it is characterised in that including pump head, base and drive device, wherein, the pump head and
The drive device direct connection, and both are each attached on the base,
The pump head include the pump housing, impeller, bearing assembly, magnetic drive component and support, the bearing assembly include pump shaft, bearing and
Chuck, the magnetic drives component includes interior magnet rotor, outer magnet rotor and separation sleeve,
The pump housing is fixed on the bracket by the chuck, and the support is fixed on the base, and the pump shaft leads to
Cross the bearing to be arranged on the chuck, the separation sleeve is connected with the chuck static seal, the interior magnet rotor is arranged on
One end of the pump shaft and it is built in the separation sleeve, the outer magnet rotor is connected and covers with the drive shaft of the drive device
In the outside of the separation sleeve, the interior magnet rotor is driven to rotate when the outer magnet rotor is rotated, the impeller is arranged on institute
State the other end of pump shaft.
2. supercritical carbon dioxide pump according to claim 1, it is characterised in that the bearing includes outer ring and inner ring,
Wherein, the inner ring is fixed on the pump shaft, and the outer ring is fixed on the chuck, and the outer ring is graphite material, institute
Inner ring is stated for hard alloy material.
3. supercritical carbon dioxide pump according to claim 2, it is characterised in that the bearing is two sets, respectively the
A set of bearing and second set of bearing, wherein, the first set bearing is arranged on the side of the pump shaft and the chuck junction
Edge, second set of bearing is arranged on another lateral edges of the pump shaft and the chuck junction.
4. supercritical carbon dioxide pump according to claim 3, it is characterised in that also including preceding attic base, rear attic base, gear
Set, the first thrusting plate and the second thrusting plate,
Second set of bearing is close to the separation sleeve than the first set bearing,
The rear attic base and the interstage sleeve, the rear attic base are disposed between second set of bearing and the interior magnet rotor
Second thrusting plate is provided between second set of bearing,
Be provided with the preceding attic base between the impeller and the first set bearing, the preceding attic base and the first set bearing it
Between be provided with first thrusting plate.
5. supercritical carbon dioxide pump according to claim 1, it is characterised in that the support is logical with the drive device
Cross ring flange connection.
6. supercritical carbon dioxide pump according to claim 1, it is characterised in that the drive device is motor.
7. supercritical carbon dioxide pump according to claim 6, it is characterised in that line branch centered on the drive device
Support.
8. supercritical carbon dioxide pump according to claim 1, it is characterised in that the separation sleeve and the chuck it
Between, sealing means between the chuck and the pump housing be static seal, be provided with gasket seal at both sealings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621026199.6U CN206221302U (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 |
|---|---|---|---|
| CN201621026199.6U CN206221302U (en) | 2016-08-31 | 2016-08-31 | A kind of supercritical carbon dioxide pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206221302U true CN206221302U (en) | 2017-06-06 |
Family
ID=58782703
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621026199.6U Active CN206221302U (en) | 2016-08-31 | 2016-08-31 | A kind of supercritical carbon dioxide pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206221302U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246565A (en) * | 2016-08-31 | 2016-12-21 | 兰州海兰德泵业有限公司 | A kind of supercritical carbon dioxide pump |
| CN110274028A (en) * | 2019-05-20 | 2019-09-24 | 清华大学 | A kind of magnetic coupling transmission device for sealing magnetic fluid |
-
2016
- 2016-08-31 CN CN201621026199.6U patent/CN206221302U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106246565A (en) * | 2016-08-31 | 2016-12-21 | 兰州海兰德泵业有限公司 | A kind of supercritical carbon dioxide pump |
| CN110274028A (en) * | 2019-05-20 | 2019-09-24 | 清华大学 | A kind of magnetic coupling transmission device for sealing magnetic fluid |
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