CN106451996A - Liquid-state metal electromagnetic pump for space nuclear environment - Google Patents
Liquid-state metal electromagnetic pump for space nuclear environment Download PDFInfo
- Publication number
- CN106451996A CN106451996A CN201610937565.1A CN201610937565A CN106451996A CN 106451996 A CN106451996 A CN 106451996A CN 201610937565 A CN201610937565 A CN 201610937565A CN 106451996 A CN106451996 A CN 106451996A
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- assembly
- electromagnetic pump
- liquid metal
- electromagnetic
- space
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K44/00—Machines in which the dynamo-electric interaction between a plasma or flow of conductive liquid or of fluid-borne conductive or magnetic particles and a coil system or magnetic field converts energy of mass flow into electrical energy or vice versa
- H02K44/02—Electrodynamic pumps
- H02K44/04—Conduction pumps
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to a liquid-state metal electromagnetic pump. Aiming at solving the problem that an existing electromagnetic pump cannot meet application requirements of a space nuclear power supply system, the invention provides a liquid-state metal electromagnetic pump for a space nuclear environment. The electromagnetic pump is composed of a pump groove assembly, an electromagnetic excitation structure assembly, a gas sealing shell assembly and a power transmission assembly. According to the liquid-state metal electromagnetic pump, an iron core structure has relatively good magnetism conducting efficiency and the weight and volume of the electromagnetic pump are easy to reduce; an annular flow channel of liquid-state metal can effectively improve the working efficiency of the electromagnetic pump; the electromagnetic pump is compact and firm in structure and can bear vibration and impacts from a launching phase to an orbit injection phase of a spacecraft; the gas sealing shell assembly and inert gas can provide effective protection for an electromagnetic excitation structure so that the service life is extremely prolonged and the reliability is extremely improved; and the electromagnetic pump adopts a relatively reasonable design structure so that the control of temperature distribution is facilitated and the electromagnetic pump can stably work for a long period in a vacuum environment.
Description
Technical field
The present invention relates to a kind of liquid metal electromagnetic pump, more particularly to a kind of space nuclear environment liquid metal electromagnetic pump.
Background technology
The development of survey of deep space spacecraft in the urgent need to high-power, long-life, round-the-clock spatial overlay, at present,
Only changed using thermion and the space nuclear power system of Stirling cycle could meet above-mentioned workload demand.
Space nuclear power system produces heat by nuclear energy, using electromagnetic pump, liquid metal coolant is drawn feeding nuclear reactor
Reactor core is by heat derives.Under normal conditions, it is to save launch load, space nuclear power system is only capable of equipping an electromagnetic pump.
But as electromagnetic pump is the nucleus equipment of space nuclear power system, equivalent to its heart, therefore once there is unexpected failure, will
Cause system integrally to be scrapped in advance, cause the failure of space mission.
At present, two countries of the United States, Russia are maintained the leading position in the research and development of space nuclear power system.But due to space nuclear power system
System is with height technique sensitive, and therefore having no open source information for its focus technology can for reference, especially for as core
For the electromagnetic pump of heart equipment, there is no in the world can be for reference design.And for China, due to space nuclear power
The research and development of system are started late, do not have at present yet maturation design can be for reference.
Used as conveying equipment, electromagnetic pump has a certain degree of application in industrial circle, but if being applied in its space flight
On device, then need to meet the particular/special requirement of various harshnesses, therefore ordinary electromagnetic pump cannot be competent at all.First, electromagnetic pump is in boat
Its device is launched to be needed to bear huge vibration and impact to the stage of entering the orbit and should not be damaged；Second, after entering the orbit, electromagnetic pump
Also need to be run under vacuum, high temperature and strong radiation environment steadily in the long term；3rd, meeting liquid metal coolant transporting
While requiring, in addition it is also necessary to reduce the weight and volume of electromagnetic pump as far as possible, and improve reliability.Therefore, to realize electricity
Application of the magnetic pumping in space nuclear power system, it is necessary to develop a kind of applicable electromagnetic pump.
Content of the invention
For solving the problems, such as that existing electromagnetic pump is difficult to meet space nuclear power system application requirement, space and strong irradiation is realized
The electromagnetic pump conveying of liquid metal coolant under environment, the invention provides a kind of space nuclear environment liquid metal electromagnetic pump.
The space nuclear environment liquid metal electromagnetic pump includes pump ditch assembly, electromagnetic activation structure assembly, outside air seal
Housing assy and power transmission assembly；
The pump ditch assembly includes central magnetic conductor, pressure-bearing outer tube；Central authorities' magnetic conductor includes waterpower shell and central authorities
Conducting magnet core, the profile of the waterpower shell is torpedo, and central authorities' conducting magnet core is by some equivalently-sized strip iron cores
Constitute, each strip iron core is in the radially radial uniform arrangement of central magnetic conductor；Central authorities' magnetic conductor is located at pressure-bearing outer tube
Inside, the waterpower shell of central magnetic conductor is fixedly connected between pipe internal surface by some fixtures and pressure-bearing outward, central magnetic conduction
The annular channel of liquid metal is formed between body and pressure-bearing outer tube；Pressure-bearing outer tube two ends waterpower respectively with central magnetic conductor
Case nose and tail end corresponding position adopt the tapering type design of internal diameter, be also fixedly connected with the outer tube outer surface of pressure-bearing front mounting disc and
Mounting disc afterwards；
The electromagnetic activation structure assembly be located at the pressure-bearing outside pipe, electromagnetic activation structure assembly and pressure-bearing outer tube it
Between be provided with thermal shield and fixing silk screen；The electromagnetic activation structure assembly is made up of some equivalently-sized longitudinal windings, respectively
The diametrically radial uniform arrangement of longitudinal winding；The iron core two ends of each longitudinal winding of the electromagnetic activation structure assembly are respectively
It is fixedly connected with front mounting disc and rear mounting disc；
The air seal cage assembly is located at outside electromagnetic activation structure assembly, by procapsid, interlude, back casing structure
Become, inside air seal cage assembly, be filled with noble gases；
The power transmission assembly is by the distribution structure being arranged in air seal cage assembly, through air seal shell
The sealed electrical connector of assembly shell and externally fed cable are constituted.
Central authorities' magnetic conductor can also include central fix bar, and central authorities' fix bar is located in waterpower enclosure
Centre, its surface has draw-in groove, and two ends are provided with packing ring and nut；By waterpower shell, the draw-in groove of central fix bar, packing ring and nut
Position-limiting action by each strip iron core be limited in determination position；Buffering is provided between central authorities' fix bar and waterpower case nose
Spring, the buffer spring is in compressive state under normal conditions.Obtain can each strip iron core using this kind of fixed mechanism preferable
Fixed effect, and improve the anti-vibration of central magnetic conductor, impact property further.
On the tail end contraction flow region outer surface of the waterpower shell, some keepers can also be set, these keepers are in normality
Under can contact with the outer pipe internal surface of pressure-bearing.By arranging keeper in waterpower shell tail end, when pump ditch assembly is because of electromagnetic pump
Change working and make temperature occur large change when, waterpower shell tail end can be freely moved forward and backward with respect to pressure-bearing outer tube,
And relatively stable position is maintained under the position-limiting action of keeper, it is ensured that the structure of pump ditch assembly and suffered stress are steady
Fixed, be conducive to improving the reliability of electromagnetic pump further.
It is preferred that the thermal shield and fixing silk screen are respectively adopted inorganic heatshield material and no magnetic metal gauze.This
The purpose of bright employing thermal shield is outwards conducted for suppression pump ditch heat, and preferred structure herein combines inorganic heatshield material
Excellent high-temperature stability, and the advantages of contact area led by the brief biography of no magnetic metal gauze, improve heat shielding effect further
Really.
In gap between the coil of each longitudinal winding of the electromagnetic activation structure assembly and iron core dispersed filler have inorganic absolutely
Edge pad is preferred, is conducive to the coil abrasion for avoiding prolonged stronger mechanical vibration from bringing.
The iron core of each longitudinal winding of the electromagnetic activation structure assembly is preferred using pectination iron core, using the ferrum of the configuration
Core can improve magnetic conduction effect further, and then improve pump ditch utilization ratio.
The iron core of the strip iron core and each longitudinal winding of electromagnetic activation structure assembly is formed by stacking using stalloy
Iron core is preferred.
Employed in each longitudinal winding of the electromagnetic activation structure assembly, the wire rod of coil is preferably silver or nickel-clad copper, with
Obtain more excellent electric conductivity, high high-temp stability and machining property.
Each longitudinal winding top of the electromagnetic activation structure assembly and air seal cage assembly close contact be preferred,
It is beneficial to more preferable radiating.
The air seal cage assembly is tubular and cylinder closed at both ends, and the pressure-bearing outer tube two ends pass gas respectively
Two blind end of sealing shell assembly, and pressure-bearing is outer is tightly connected between tube outer surface and air seal cage assembly as preferred.
The material adopted by the pressure-bearing outer tube is preferably no magnetic austenitic stainless steel；The waterpower shell, fixture and
The material adopted by keeper is preferably no magnetic austenitic stainless steel；The material adopted by central authorities' fix bar, packing ring and nut
Material is preferably no magnetic austenitic stainless steel.In this space nuclear environment liquid metal electromagnetic pump, above-mentioned part is preferably adopted
No magnetic austenitic stainless steel has good liquid metal compatibility, machining property and welding characteristic concurrently.
The material adopted by the air seal cage assembly is preferably no magnetic austenitic stainless steel or titanium alloy.
The noble gases are preferably argon.
The space nuclear environment liquid metal electromagnetic pump of the present invention be a kind of based on the propulsion of Д Hubble traveling-wave field theoretical and
A Einstein and the electromagnetic pump of Л Si Qilaerte structure, the travelling-magnetic-field for being produced by its electromagnetic activation structure, make pump
Faradic current is produced in liquid metal in ditch, and the faradic current occurs electromagnetic action with magnetic field again so that the liquid in pump ditch
Metal inside produces pressure gradient, and then promotes liquid metal directed flow.
The present invention mainly has the beneficial effect that：First, it is special that central magnetic conductor and electromagnetic activation structure assembly are employed
Core structure, with preferable magnetic conduction efficiency, can meet require on the premise of cause core structure lightweight, be conducive to
Reduce the weight and volume of electromagnetic pump.Second, waterpower profile selected by central magnetic conductor and its formed between pressure-bearing outer tube
The annular channel of liquid metal be very beneficial for the flowing of liquid metal, the generation of vortex can be reduced to the full extent,
Suffered resistance during liquid metal flows is effectively reduced, so as to effectively improve the work efficiency of electromagnetic pump.3rd, the present invention's
Space nuclear environment liquid metal electromagnetic pump compact conformation, firm, can bear Spacecraft Launch to stage of entering the orbit vibration and
Impact, it is ensured that the reliability of follow-up operation.4th, employ air seal cage assembly and electromagnetic activation structure is accommodated, and in gas
Noble gases are filled with body sealing shell assembly to protect electromagnetic activation structure so that the electromagnetism under hot conditionss swashs
Encouraging structure can avoid the impact of fine vacuum without causing spillage of material faster, greatly improve electromagnetic activation structure
Life and reliability.5th, the space nuclear environment liquid metal electromagnetic pump of the present invention employs relatively reasonable design structure,
Be conducive to the control of Temperature Distribution so that the electromagnetic pump being capable of delivery temperature up to 525 DEG C of liquid for a long time in vacuum environment
Metal, and bear the ambient temperature more than 500 DEG C.Meanwhile, the electromagnetic pump can also reach 3 × 10 in radiation condition6Fast neutron/
cm2S, 2 × 106Thermal neutron/cm2S, 1 × 104Long-term stable operation under conditions of rad gamma-rays/h.
Description of the drawings
The space nuclear environment liquid metal electromagnetic pump structural representation of Fig. 1 present invention.
In Fig. 2 Fig. 1, A-A is to schematic cross-section.
The pump ditch assembly schematic diagram of the space nuclear environment liquid metal electromagnetic pump of Fig. 3 present invention.
Reference：1. pump ditch assembly, 2. electromagnetic activation structure assembly, 3. air seal cage assembly, 4. power transmission
Assembly, 5. central magnetic conductor, 6. pressure-bearing outer tube, 7. waterpower shell, 8. central conducting magnet core, 9. fixture, 10. before mounting disc,
Mounting disc after 11., 12. central fix bars, 13. packing rings, 14. nuts, 15. buffer springs, 16. sealed electrical connectors, outside 17.
Service cable.
Specific embodiment
With reference to specific embodiment, embodiments of the present invention are described further.
Embodiment
The space nuclear environment liquid metal electromagnetic pump of the present invention includes pump ditch assembly 1, electromagnetic activation structure assembly 2, gas
Body sealing shell assembly 3 and power transmission assembly 4.
The pump ditch assembly 1 includes central magnetic conductor 5, pressure-bearing outer tube 6；Central authorities' magnetic conductor 5 includes 7 He of waterpower shell
Central conducting magnet core 8, the profile of the waterpower shell 7 is torpedo, and central authorities' conducting magnet core 8 is by some equivalently-sized bars
Shape iron core is constituted, and each strip iron core is in the radially radial uniform arrangement of central magnetic conductor 5；Central authorities' magnetic conductor 5 is located at
Inside pressure-bearing outer tube 6, the waterpower shell 7 of central magnetic conductor 5 is by fixing between some fixtures 9 and 6 inner surface of pressure-bearing outer tube
Connection, forms the annular channel of liquid metal between central magnetic conductor 5 and pressure-bearing outer tube 6；6 two ends of pressure-bearing outer tube respectively with
7 front end of waterpower shell of central magnetic conductor 5 and tail end corresponding position adopt the tapering type design of internal diameter, on 6 outer surface of pressure-bearing outer tube also
Front mounting disc 10 and rear mounting disc 11 is fixedly connected with, connected mode can select bolt connection.
The electromagnetic activation structure assembly 2 is located at outside the pressure-bearing outer tube 6, outside electromagnetic activation structure assembly 2 and pressure-bearing
Be provided with thermal shield and fixing silk screen between pipe 6, the thermal shield and fixing silk screen be respectively adopted inorganic heatshield material and
No magnetic metal gauze；The electromagnetic activation structure assembly 2 is made up of some equivalently-sized longitudinal windings, and each longitudinal winding is in footpath
Radial uniform arrangement upwards；In gap between the coil of each longitudinal winding of the electromagnetic activation structure assembly 2 and iron core point
Dissipate and be filled with inorganic insulation pad；The iron core two ends of each longitudinal winding of the electromagnetic activation structure assembly 2 respectively with front mounting disc
10 are fixedly connected with rear mounting disc 11, and connected mode can also select bolt connection；The each longitudinal direction of the electromagnetic activation structure assembly 2
The iron core of winding can adopt pectination iron core, and the wire rod of adopted coil is silver；The air seal cage assembly 3 is swashed positioned at magnetic
Encourage outside structural assembly, be made up of procapsid, interlude, back casing, inside air seal cage assembly 3, be filled with noble gases.
Air seal cage assembly 3 in the present embodiment adopts following structure：Air seal cage assembly 3 is tubular and two end seal of cylinder
Close, 6 two ends of pressure-bearing outer tube pass 3 liang of blind ends of air seal cage assembly, and 6 outer surface of pressure-bearing outer tube and air seal respectively
It is tightly connected between cage assembly 3.
The power transmission assembly 4 is by the distribution structure being arranged in air seal cage assembly 3, through outside air seal
The sealed electrical connector 16 of 3 housing of housing assy and externally fed cable 17 are constituted.
Central authorities' magnetic conductor 5 can also include central fix bar 12, and central authorities' fix bar 12 is located in waterpower shell 7
Central authorities of portion, its surface has draw-in groove, and two ends are provided with packing ring 13 and nut 14；By waterpower shell 7, the card of central fix bar 12
Each strip iron core is limited in determination position by the position-limiting action of groove, packing ring 13 and nut 14；Central authorities' fix bar 12 and waterpower
Shell is provided with buffer spring 15 between 7 front end, and the buffer spring 15 is in compressive state under normal conditions.
The pressure-bearing outer tube 6, waterpower shell 7, fixture 9, keeper, central fix bar 12, packing ring 13, nut 14 and
The material adopted in the present embodiment by air seal cage assembly 3 is no magnetic austenitic stainless steel.The strip iron core with
And the iron core that the iron core of each longitudinal winding of electromagnetic activation structure assembly 2 is all formed by stacking using stalloy in the present embodiment.
Claims (16)
1. a kind of space nuclear environment liquid metal electromagnetic pump, it is characterised in that：The space nuclear environment liquid metal electromagnetic pump
Including pump ditch assembly, electromagnetic activation structure assembly, air seal cage assembly and power transmission assembly；
The pump ditch assembly includes central magnetic conductor, pressure-bearing outer tube；Central authorities' magnetic conductor includes waterpower shell and central magnetic conduction
Iron core, the profile of the waterpower shell is torpedo, and central authorities' conducting magnet core is made up of some equivalently-sized strip iron cores,
Each strip iron core is in the radially radial uniform arrangement of central magnetic conductor；Central authorities' magnetic conductor is located at pressure-bearing outer tube,
The waterpower shell of central magnetic conductor by being fixedly connected between the outer pipe internal surface of some fixtures and pressure-bearing, central magnetic conductor with hold
The annular channel of liquid metal is formed between pressure outer tube；The pressure-bearing outer tube two ends respectively with the waterpower shell of central magnetic conductor before
End and tail end corresponding position adopt the tapering type design of internal diameter, are also fixedly connected with front mounting disc and rear installation on the outer tube outer surface of pressure-bearing
Disk；
The electromagnetic activation structure assembly is located at the pressure-bearing outside pipe, sets between electromagnetic activation structure assembly and pressure-bearing outer tube
There are thermal shield and fixing silk screen；The electromagnetic activation structure assembly is made up of some equivalently-sized longitudinal windings, each longitudinal direction
Winding diametrically radial uniform arrangement；The iron core two ends of each longitudinal winding of the electromagnetic activation structure assembly respectively with front
Mounting disc is fixedly connected with rear mounting disc；
The air seal cage assembly is located at outside electromagnetic activation structure assembly, is made up of procapsid, interlude, back casing,
Noble gases are filled with inside air seal cage assembly；
The power transmission assembly is by the distribution structure being arranged in air seal cage assembly, through air seal cage assembly
The sealed electrical connector of housing and externally fed cable are constituted.
2. nuclear environment liquid metal electromagnetic pump in space as claimed in claim 1, it is characterised in that：Central authorities' magnetic conductor is also
Including central fix bar, central authorities' fix bar is located at waterpower enclosure central authorities, and its surface has draw-in groove, and two ends are provided with packing ring
And nut；By the position-limiting action of waterpower shell, the draw-in groove, packing ring and nut of central fix bar, each strip iron core is limited in really
Positioning is put；Buffer spring is provided between central authorities' fix bar and waterpower case nose, the buffer spring is under normal conditions in compression
State.
3. nuclear environment liquid metal electromagnetic pump in space as claimed in claim 1 or 2, it is characterised in that：The waterpower shell
Tail end contraction flow region outer surface on some keepers are set, these keepers can be connected with the outer pipe internal surface of pressure-bearing under normal conditions
Touch.
4. nuclear environment liquid metal electromagnetic pump in space as claimed in claim 1 or 2, it is characterised in that：The thermal shield
Inorganic heatshield material and no magnetic metal gauze are respectively adopted with fixing silk screen.
5. nuclear environment liquid metal electromagnetic pump in space as claimed in claim 1 or 2, it is characterised in that：The electromagnetic excitation
In gap between the coil of each longitudinal winding of structural assembly and iron core, dispersed filler has inorganic insulation spacer.
6. nuclear environment liquid metal electromagnetic pump in space as claimed in claim 1 or 2, it is characterised in that：The electromagnetic excitation
The iron core of each longitudinal winding of structural assembly adopts pectination iron core.
7. nuclear environment liquid metal electromagnetic pump in space as claimed in claim 1 or 2, it is characterised in that：The strip iron core
And the iron core that the iron core of each longitudinal winding of electromagnetic activation structure assembly is formed by stacking using stalloy.
8. nuclear environment liquid metal electromagnetic pump in space as claimed in claim 1 or 2, it is characterised in that：The electromagnetic excitation
Employed in each longitudinal winding of structural assembly, the wire rod of coil is silver or nickel-clad copper.
9. nuclear environment liquid metal electromagnetic pump in space as claimed in claim 1 or 2, it is characterised in that：The electromagnetic excitation
Each longitudinal winding top of structural assembly and air seal cage assembly close contact.
10. nuclear environment liquid metal electromagnetic pump in space as claimed in claim 1 or 2, it is characterised in that：The air seal
Cage assembly is tubular and cylinder closed at both ends, and the pressure-bearing outer tube two ends pass two closing of air seal cage assembly respectively
It is tightly connected between tube outer surface and air seal cage assembly outside end, and pressure-bearing.
11. nuclear environment liquid metal electromagnetic pumps in space as claimed in claim 1 or 2, it is characterised in that：The pressure-bearing outer tube
The material for being adopted is no magnetic austenitic stainless steel.
12. nuclear environment liquid metal electromagnetic pumps in space as claimed in claim 1 or 2, it is characterised in that：The waterpower shell
The material for being adopted with fixture is no magnetic austenitic stainless steel.
13. nuclear environment liquid metal electromagnetic pumps in space as claimed in claim 2, it is characterised in that：Central authorities' fix bar,
The material adopted by packing ring and nut is no magnetic austenitic stainless steel.
14. nuclear environment liquid metal electromagnetic pumps in space as claimed in claim 1 or 2, it is characterised in that：The air seal
The material adopted by cage assembly is no magnetic austenitic stainless steel or titanium alloy.
15. nuclear environment liquid metal electromagnetic pumps in space as claimed in claim 1 or 2, it is characterised in that：The noble gases
For argon.
16. nuclear environment liquid metal electromagnetic pumps in space as claimed in claim 3, it is characterised in that：The keeper is adopted
Material is no magnetic austenitic stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610937565.1A CN106451996B (en) | 2016-10-25 | 2016-10-25 | A kind of space nuclear environment liquid metal electromagnetic pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610937565.1A CN106451996B (en) | 2016-10-25 | 2016-10-25 | A kind of space nuclear environment liquid metal electromagnetic pump |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106451996A true CN106451996A (en) | 2017-02-22 |
| CN106451996B CN106451996B (en) | 2018-12-28 |
Family
ID=58178164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610937565.1A Active CN106451996B (en) | 2016-10-25 | 2016-10-25 | A kind of space nuclear environment liquid metal electromagnetic pump |
Country Status (1)
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| CN (1) | CN106451996B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111404354A (en) * | 2020-02-25 | 2020-07-10 | 浙富控股集团股份有限公司 | Electromagnetic pump structure |
| CN112803712A (en) * | 2021-01-29 | 2021-05-14 | 中国原子能科学研究院 | Liquid metal electromagnetic pump |
| CN113824291A (en) * | 2020-12-14 | 2021-12-21 | 陈文国 | Energy collector |
| CN114400862A (en) * | 2022-01-24 | 2022-04-26 | 中国原子能科学研究院 | Liquid metal electromagnetic pump |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111404354A (en) * | 2020-02-25 | 2020-07-10 | 浙富控股集团股份有限公司 | Electromagnetic pump structure |
| CN113824291A (en) * | 2020-12-14 | 2021-12-21 | 陈文国 | Energy collector |
| CN112803712A (en) * | 2021-01-29 | 2021-05-14 | 中国原子能科学研究院 | Liquid metal electromagnetic pump |
| CN112803712B (en) * | 2021-01-29 | 2022-07-01 | 中国原子能科学研究院 | Liquid metal electromagnetic pump |
| CN114400862A (en) * | 2022-01-24 | 2022-04-26 | 中国原子能科学研究院 | Liquid metal electromagnetic pump |
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|---|---|
| CN106451996B (en) | 2018-12-28 |
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