CN108716469A - A kind of micro- hot centrifugal pump of leakage of high speed suitable for ultralow temperature - Google Patents
A kind of micro- hot centrifugal pump of leakage of high speed suitable for ultralow temperature Download PDFInfo
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- CN108716469A CN108716469A CN201810657335.9A CN201810657335A CN108716469A CN 108716469 A CN108716469 A CN 108716469A CN 201810657335 A CN201810657335 A CN 201810657335A CN 108716469 A CN108716469 A CN 108716469A
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- motor
- pump
- leakage
- micro
- high speed
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- 239000007788 liquid Substances 0.000 claims abstract description 92
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 239000001257 hydrogen Substances 0.000 claims description 47
- 229910052739 hydrogen Inorganic materials 0.000 claims description 47
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 44
- 238000009413 insulation Methods 0.000 claims description 39
- 239000003822 epoxy resin Substances 0.000 claims description 6
- 229920000647 polyepoxide Polymers 0.000 claims description 6
- 150000002431 hydrogen Chemical class 0.000 claims description 3
- 238000012546 transfer Methods 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001172 regenerating effect Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000033772 system development Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/06—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
- F04D29/007—Details, component parts, or accessories especially adapted for liquid pumps
-
- 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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
-
- 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
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
- F04D29/5893—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps heat insulation or conduction
Abstract
The invention discloses a kind of micro- hot centrifugal pumps of leakage of high speed suitable for ultralow temperature, are related to low temperature pump technical field, it is intended to solve the problems, such as that heat loss causes efficiency of transmission to reduce when low temperature environment work, its key points of the technical solution are that：A kind of micro- hot centrifugal pump of leakage of high speed suitable for ultralow temperature, including motor and it is connected to the pump housing of motor output end, the pump housing includes the adiabatic mechanism being immersed in cryogenic liquid, the pump liquid component for being connected to adiabatic mechanism end, and the supporting mechanism being supported for the output shaft to adiabatic mechanism and motor is provided in the pump housing.A kind of micro- hot centrifugal pump of leakage of high speed suitable for ultralow temperature of the present invention, has excellent heat insulating performance, the high advantage of transfer efficiency.
Description
Technical field
The present invention relates to centrifugation pump technical fields, more specifically, it relates to a kind of micro- leakage of high speed suitable for ultralow temperature
Hot centrifugal pump.
Background technology
Hydrogen Energy is as a kind of clean regenerative resource.Have many advantages, such as that abundance, fuel value are big, safety is good, quilt
Referred to as " following green energy resource ".And the fossil energies such as coal, oil, natural gas is non-renewable, it inevitably will be
It in the future sometime can be exhausted.Thus, from the point of view of the sustainable development of energy requirement, Hydrogen Energy and other regenerative resources are replaced
It is a kind of certainty of energy resource system development for non-renewable energy resources such as fossil energies.
When liquid hydrogen factory farther out from user when, truck, machine can be placed on liquid hydrogen in the special low temperature thermal insulation groove tank
It is transported on vehicle, ship or aircraft.This is a kind of can to meet larger defeated hydrogen amount again than fortune hydrogen methods faster, economic.?
Which kind of no matter, using mode in transportational process, it is required to be caused to flow to drive liquid hydrogen movement to provide power source.Drive liquid hydrogen
There are two types of method, one is pressurization schemes, i.e., using adding high pressure gas or heating liquid hydrogen is allowed to evaporate and generates driving force, low temperature
Liquid machine pump driving liquid hydrogen.The type of pump has very much, but centrifugal pump, diaphragm pump, bellowspump are found in previous research
It is suitable for cryogenic system with several pumps such as piston pump.
Centrifugal pump in the prior art is since the defect in structure causes the lost problem of cold serious, to influence liquid hydrogen
Transfer efficiency.
Therefore need to propose a kind of new scheme to solve the problems, such as this.
Invention content
In view of the deficiencies of the prior art, the present invention intends to provide a kind of micro- leakage of the high speed suitable for ultralow temperature
Hot centrifugal pump has the advantages that transfer efficiency is high.
The present invention above-mentioned technical purpose technical scheme is that：A kind of height suitable for ultralow temperature
The micro- hot centrifugal pump of leakage of speed, including motor and the pump housing for being connected to motor output end, the pump housing include being immersed in cryogenic liquid
Interior adiabatic mechanism, the pump liquid component for being connected to adiabatic mechanism end, be provided in the pump housing for adiabatic mechanism and
The supporting mechanism that the output shaft of motor is supported.
By using above-mentioned technical proposal, when work, pump liquid component and adiabatic mechanism are immersed in cryogenic liquid, and are pumped
Liquid component is located at lowermost end and carries out pump liquid, and adiabatic mechanism is between motor and pump liquid component, in this way when pump liquid component operation
When, cold can be reduced and be passed up to motor and the external world, to effectively reduce cold consumption；It can be carried by supporting mechanism
The stability of high structure to improve the critical speed of motor output shaft, and then improves pump liquid efficiency.
The present invention is further arranged to：It is described thermal insulation mechanism include be connected to electric machine casing and cylindrical extension,
It is connected to motor output shaft and extending shaft in the extension, is sheathed on adiabatic group outside extending shaft and in extension
Part.
By using above-mentioned technical proposal, by the way that extension and extending shaft is arranged, so that pump liquid component and motor
The distance between extend, extend the transmission distance of cold, to reduce cold conduction scatter and disappear, by heat-insulation assembly further every
Exhausted liquid hydrogen and the conduction of external cold.
The present invention is further arranged to：The heat-insulation assembly includes several thermal insulation boards for being sheathed on extending shaft, several described
Thermal insulation board stacks setting, and the thermal insulation board is made of epoxy resin.
By using above-mentioned technical proposal, epoxy resin heat-insulating property is relatively good, and has various informative, solidification side
Just the advantages that, shrinkage is low, good mechanical properties, several thermal insulation boards stacked can further reduce cold and conduct upwards.
The present invention is further arranged to：The thermal insulation board lower surface is provided with reflecting layer, and the reflecting layer is in downwardly projecting
Cambered surface setting.
By using above-mentioned technical proposal, reflecting layer is arranged in downwardly projecting cambered surface, so the upward spoke of cold of lower section
It when being incident upon the reflecting layer of cambered surface, can be reflected down by reflecting layer, to hinder cold to conduct upwards.
The present invention is further arranged to：Every piece of thermal insulation board lower surface opens up that there are two central angle vertical angles each other
Arc groove, the corresponding central angle of each arc groove is 90 °, and the arc groove of adjacent insulation plate is staggered.
By using above-mentioned technical proposal, accordingly even when thering is a small amount of liquid hydrogen to be flowed up along gap, when liquid hydrogen flows to phase
When between two adjacent thermal insulation boards, a small amount of liquid hydrogen can be stored in independently arranged arc groove, to avoid liquid hydrogen shape in gap
At convection current, and the resistance of liquid hydrogen flowing can be increased, slow down liquid hydrogen flowing velocity.
The present invention is further arranged to：Extending shaft is in hollow setting, and the extending shaft lateral wall offers several grooves.
By using above-mentioned technical proposal, extending shaft is in hollow setting, can further decrease the heat conduction of extending shaft in this way
Rate offers several grooves to reduce the heat transfer of extending shaft on the lateral wall of extending shaft, in this way liquid hydrogen along gap to
When upper flowing, when flowing to groove, liquid hydrogen flows into groove and forms vortex, right to change the original flow direction of liquid hydrogen
The action that flows up of liquid hydrogen forms resistance, and liquid hydrogen is further prevented to flow up to form convection current, reduces heat conduction.
The present invention is further arranged to：The pump liquid component includes being connected to extend shaft end and the impeller in the pump housing
Component, the pump housing offer the inlet entered for liquid hydrogen close to the end face of impeller assembly, and the pump housing is located at impeller assembly
Side wall close to impeller assembly offers the liquid outlet sent out for liquid hydrogen.
By using above-mentioned technical proposal, motor drives extending shaft rotation, to which impeller component rotates, impeller assembly
When rotation, liquid hydrogen can be sucked by inlet, sent out by liquid outlet, to realize the transmission of liquid hydrogen.
The present invention is further arranged to：The impeller assembly includes being bolted to connection to deviate from motor one in extending shaft
The rotating seat at end, the blade for being fixedly connected on rotating seat.
By using above-mentioned technical proposal, when installing blade, it is only necessary to rotating seat are fixed on extending shaft by bolt
End, blade can be fixedly connected on rotating seat by welding, install more convenient succinct.
The present invention is further arranged to：The supporting mechanism includes the first bearing for being set to back end cover for motor, is set to
The second bearing of motor front end cover is set to 3rd bearing of the pump housing close to impeller one end, and the main shaft both ends of motor are worn respectively
It is arranged in 3rd bearing in the end of first bearing and second bearing, the extending shaft, between the extending shaft and pump housing inner wall
There are gaps.
Due to increasing extending shaft on the output shaft of motor, when the motor is energized, extending shaft is flexible axle, by using
Above-mentioned technical proposal, when electric motor starting, the main shaft of motor realizes support by first bearing and second bearing, the bottom end of extending shaft by
3rd bearing realizes support, is realized to the excessively fixed of electric machine main shaft and extending shaft by first bearing, second bearing and 3rd bearing
Bit architecture, but since the main shaft surface of extending shaft and motor is handled by precision, and there are gap around extending shaft, because
This crossing positioning and can be allowed to herein, and the stability due to improving rotation, to improve extension critical speed of shaft,
And then improve pump liquid efficiency.
The present invention is further arranged to：The output shaft end of motor is offered with female mounting hole, the extension
Shaft end is threadedly coupled by the way that external screw thread is arranged with the output shaft of motor, and the output shaft direction of rotation of hand of spiral and motor
On the contrary.
By using above-mentioned technical proposal, when motor drives extending shaft rotation, due to the output shaft of hand of spiral and motor
Direction of rotation is on the contrary, can be by screw thread in gradually locking trend, to realize self-locking work(between extending shaft and motor output shaft
It can so that the connection of extending shaft and motor output shaft is more secured.
In conclusion the invention has the advantages that：
One：Pump liquid component and adiabatic mechanism are immersed in cryogenic liquid, and pump liquid component is located at lowermost end and carries out pump liquid,
Adiabatic mechanism is between motor and pump liquid component, in this way when pump liquid component operation, can reduce cold and be passed up to electricity
Machine and the external world, to effectively reduce cold consumption；The stability that structure can be improved by supporting mechanism, to improve motor
Critical speed of shaft is exported, and then improves pump liquid efficiency；
Secondly：By the way that extension and extending shaft is arranged, so that the distance between pump liquid component and motor extend, extend cold
The transmission distance of amount, the conduction to reduce cold are scattered and disappeared, and liquid hydrogen is further completely cut off by heat-insulation assembly and external cold passes
It leads.
Description of the drawings
Fig. 1 is the sectional view of the present invention；
Fig. 2 is the sectional view of the pump housing, is mainly used for showing the internal structure of the pump housing；
Fig. 3 is the structural schematic diagram of thermal insulation board；
Fig. 4 is the sectional view of thermal insulation board, is mainly used for showing the structure in reflecting layer；
Fig. 5 is the sectional view of extending shaft, is mainly used for showing the detailed construction of extending shaft.
In figure：1, motor；2, the pump housing；3, adiabatic mechanism；4, pump liquid component；5, extension；6, extending shaft；7, adiabatic group
Part；8, thermal insulation board；9, reflecting layer；10, arc groove；11, groove；12, impeller assembly；13, inlet；14, liquid outlet；15,
One plate body；16, the second plate body；17, supporting mechanism；18, first bearing；19, second bearing；20,3rd bearing；21, rotating seat；
22, blade；23, mounting hole.
Specific implementation mode
With reference to the accompanying drawings and examples, the present invention will be described in detail.
The micro- hot centrifugal pump of leakage of a kind of high speed suitable for ultralow temperature, as shown in Figure 1, consolidating including motor 1 and by flange
Surely it is connected to the pump housing 2 of 1 output end of motor, the pump housing 2 includes adiabatic mechanism 3 for being immersed in cryogenic liquid and is connected to
The pump liquid component 4 of 3 end of adiabatic mechanism is provided in the pump housing 2 and is propped up for the output shaft to adiabatic mechanism 3 and motor 1
The supporting mechanism 17 of support；When work, pump liquid component 4 and adiabatic mechanism 3 are immersed in cryogenic liquid, and pump liquid component 4 is located at
Lowermost end simultaneously carries out pump liquid, and adiabatic mechanism 3 is between motor 1 and pump liquid component 4, can be in this way when pump liquid component 4 works
It reduces cold and is passed up to motor 1 and the external world, to effectively reduce cold consumption；Knot can be improved by supporting mechanism 17
The stability of structure exports critical speed of shaft to improve motor 1, and then improves pump liquid efficiency.
As depicted in figs. 1 and 2, adiabatic mechanism 3 includes by flanged joint in the extension 5 of 1 shell of motor, extension 5
Further include being connected to 1 output shaft of motor and extending shaft 6 in the extension 5, being set in extension in hollow cylindric setting
6 outside of axis and the heat-insulation assembly 7 in extension 5；By the way that extension 5 and extending shaft 6 is arranged, so that pump liquid component
The distance between 4 and motor 1 extend, and extend the transmission distance of cold, and the conduction to reduce cold is scattered and disappeared, and heat-insulation assembly is passed through
7 further isolation liquid hydrogen and the conduction of external cold.
As shown in Figure 1 and Figure 5, the output shaft end of motor 1 is offered with female mounting hole 23,6 end of extending shaft
Portion is threadedly coupled by the way that external screw thread is arranged with the output shaft of motor 1, and the output shaft direction of rotation phase of hand of spiral and motor 1
Instead；When motor 1 drives extending shaft 6 to rotate in this way, since the output shaft direction of rotation of hand of spiral and motor 1 is on the contrary, extending shaft 6
It can be by screw thread in gradually locking trend, to realize self-locking function between 1 output shaft of motor so that extending shaft 6 and electricity
The connection of 1 output shaft of machine is more secured.
In addition to this, extending shaft 6 is made of nonmetallic materials, such as polyamide or polyformaldehyde material may be used, also
Epoxy resin may be used, such material has preferable thermal insulation, can preferably reduce cold and conduct upwards.
As shown in Figures 2 and 3, heat-insulation assembly 7 is arranged including several and is set in the thermal insulation board 8 of extending shaft 6 in a ring,
And several about 8 thermal insulation boards stack, and thermal insulation board 8 is made of epoxy resin, and epoxy resin heat-insulating property is relatively good, and has
Have the advantages that various informative, solidification is convenient, shrinkage is low, good mechanical properties, several thermal insulation boards 8 stacked can be further
Cold is reduced to conduct upwards.
As shown in figure 4, since heat loss includes conduct radiation, by being coated with reflecting layer in the lower surface of thermal insulation board 8
9, reflecting layer 9 is arranged in downwardly projecting cambered surface, when the cold of lower section in this way is radiated to the reflecting layer 9 of cambered surface upwards, Ke Yiyou
Reflecting layer 9 is reflected down, to hinder cold to conduct upwards.
As shown in Figure 2, Figure 3 and Figure 4, since thermal insulation board 8 is set on extending shaft 6, when installing thermal insulation board 8, heat-insulated
Inevitably there are gaps between plate 8 and extending shaft 6, and pump liquid component 4 can not ensure that liquid hydrogen is not revealed completely,
Therefore it has a small amount of liquid hydrogen to enter in gap and flow up by pump liquid component 4, be formed in order to avoid liquid hydrogen flows up
Convective heat transfer, opens up that there are two the arc groove 10 of central angle vertical angles each other, each arcs every piece of 8 lower surface of thermal insulation board
10 corresponding central angle of slot is 90 °, and when installing thermal insulation board 8, the arc groove 10 of adjacent insulation plate 8 is staggered；Accordingly even when
There is a small amount of liquid hydrogen to be flowed up along gap, when liquid hydrogen flows between two adjacent thermal insulation boards 8, a small amount of liquid hydrogen can be stored in solely
It erects in the arc groove 10 set, to avoid liquid hydrogen from forming convection current in gap, and the resistance of liquid hydrogen flowing can be increased, subtracted
Slow liquid hydrogen flowing velocity.
As shown in figure 3, thermal insulation board 8 includes the first plate body 15 and the second plate body 16, the first plate body 15 and the second plate body 16 are spelled
The thermal insulation board 8 to form annular is connect, and is bolted to connection between the first plate body 15 and the second plate body 16；In this way will be every
When hot plate 8 is installed on extending shaft 6, thermal insulation board 8 need not be inserted in from the end of extending shaft 6, it is only necessary to by the first plate body 15
Spliced with the second plate body 16, and is bolted, it is easy for installation, it is easy to operate.
As shown in figure 5, extending shaft 6 is in hollow setting, the thermal conductivity of extending shaft 6 can be further decreased in this way, to drop
The heat transfer of low extending shaft 6 offers several grooves 11 on the lateral wall of extending shaft 6, in this way in liquid hydrogen along gap to upstream
When dynamic, when flowing at groove 11, liquid hydrogen flows into groove 11 and forms vortex, right to change the original flow direction of liquid hydrogen
The action that flows up of liquid hydrogen forms resistance, and liquid hydrogen is further prevented to flow up to form convection current, reduces heat conduction.
As depicted in figs. 1 and 2, pump liquid component 4 includes being connected to 6 end of extending shaft and the impeller assembly in the pump housing 2
12, the pump housing 2 offers the inlet 13 entered for liquid hydrogen close to the end face of impeller assembly 12, and the pump housing 2 is located at close to impeller assembly
12 side wall offers the liquid outlet 14 sent out for liquid hydrogen；Motor 1 drives extending shaft 6 to rotate, to 12 turns of impeller component
It is dynamic, when impeller assembly 12 rotates, liquid hydrogen can be sucked by inlet 13, sent out by liquid outlet 14, to realize the biography of liquid hydrogen
It send.
As shown in Fig. 2, impeller assembly 12 includes being bolted to connection the rotation for deviating from 1 one end of motor in extending shaft 6
Seat 21, the blade 22 for being fixedly connected on rotating seat 21；When installing blade 22, it is only necessary to be fixed on rotating seat 21 by bolt
The end of extending shaft 6, blade 22 can be by welding fixedly connected on rotating seat 21, be installed more convenient succinct.
As shown in Figure 1, due to increasing extending shaft 6 on the output shaft of motor 1, when motor 1 starts, extending shaft 6 is
Flexible axle can so that structure is more stable, to improve extending shaft 6 to improve rotational stability by supporting mechanism 17
Critical speed, supporting mechanism 17 include the first bearing 18 for being set to 1 rear end cap of motor, are set to the second of 1 drive end bearing bracket of motor
Bearing 19 is set to 3rd bearing 20 of the pump housing 2 close to 12 one end of impeller assembly, and the main shaft both ends of motor 1 are arranged in respectively
The end of one bearing 18 and second bearing 19, extending shaft 6 is arranged in 3rd bearing 20；When motor 1 starts, the main shaft of motor 1 by
First bearing 18 and second bearing 19 realize support, and the bottom end of extending shaft 6 is realized by 3rd bearing 20 to be supported, and first bearing is passed through
18, second bearing 19 and 3rd bearing 20 realize the location structure excessively to 1 main shaft of motor and extending shaft 6, but due to extending shaft 6
And the main shaft surface of motor 1 is handled by precision, and there are gaps around extending shaft 6, therefore positioning of crossing herein can be with
It is allowed to, and the stability due to improving rotation, to improve the critical speed of extending shaft 6, and then improves pump liquid efficiency.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation
Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art
Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of hot centrifugal pump of the micro- leakage of high speed suitable for ultralow temperature, including motor (1) and it is connected to motor (1) output end
The pump housing (2), it is characterised in that：The pump housing (2) includes the adiabatic mechanism (3) being immersed in cryogenic liquid, is connected to adiabatic engines
The pump liquid component (4) of structure (3) end, the pump housing (2) is interior to be provided with for the output to adiabatic mechanism (3) and motor (1)
The supporting mechanism (17) that axis is supported.
2. the micro- hot centrifugal pump of leakage of a kind of high speed suitable for ultralow temperature according to claim 1, it is characterised in that：It is described exhausted
Heat engine structure (3) includes being connected to motor (1) shell and cylindrical extension (5), being connected to motor (1) output shaft and be located at
Extending shaft (6) in extension (5) is sheathed on that extending shaft (6) is external and heat-insulation assembly (7) in extension (5).
3. the micro- hot centrifugal pump of leakage of a kind of high speed suitable for ultralow temperature according to claim 2, it is characterised in that：It is described exhausted
Hot component (7) includes several thermal insulation boards (8) for being sheathed on extending shaft (6), and several thermal insulation boards (8) stack setting, it is described every
Hot plate (8) is made of epoxy resin.
4. the micro- hot centrifugal pump of leakage of a kind of high speed suitable for ultralow temperature according to claim 3, it is characterised in that：It is described every
Hot plate (8) lower surface is provided with reflecting layer (9), and the reflecting layer (9) is arranged in downwardly projecting cambered surface.
5. the micro- hot centrifugal pump of leakage of a kind of high speed suitable for ultralow temperature according to claim 4, it is characterised in that：Every piece institute
It states thermal insulation board (8) lower surface to open up there are two the arc groove (10) of central angle vertical angles each other, each arc groove (10) is corresponding
Central angle be 90 °, the arc groove (10) of adjacent insulation plate (8) is staggered.
6. the micro- hot centrifugal pump of leakage of a kind of high speed suitable for ultralow temperature according to claim 4, it is characterised in that：Extending shaft
(6) in hollow setting, extending shaft (6) lateral wall offers several grooves (11).
7. the micro- hot centrifugal pump of leakage of a kind of high speed suitable for ultralow temperature according to claim 1, it is characterised in that：The pump
Liquid component (4) includes the impeller assembly (12) for being connected to extending shaft (6) end and being located in the pump housing (2), and the pump housing (2) is close
The end face of impeller assembly (12) offers the inlet (13) entered for liquid hydrogen, and the pump housing (2) is located at impeller assembly (12) and leans on
The side wall of nearly impeller assembly (12) offers the liquid outlet (14) sent out for liquid hydrogen.
8. the micro- hot centrifugal pump of leakage of a kind of high speed suitable for ultralow temperature according to claim 7, it is characterised in that：The leaf
Wheel assembly (12) includes being bolted to connection deviate from the rotating seat (21) of motor (1) one end in extending shaft (6), be fixedly connected
Blade (22) in rotating seat (21).
9. the micro- hot centrifugal pump of leakage of a kind of high speed suitable for ultralow temperature according to claim 5, it is characterised in that：The branch
Support mechanism (17) includes being set to the first bearing (18) of motor (1) rear end cap, being set to the second bearing of motor (1) drive end bearing bracket
(19), it is set to 3rd bearing (20) of the pump housing (2) close to impeller one end, the main shaft both ends of motor (1) are arranged in first respectively
Bearing (18) and second bearing (19), the end of the extending shaft (6) are arranged in 3rd bearing (20), the extending shaft (6) with
There are gaps between the pump housing (2) inner wall.
10. the micro- hot centrifugal pump of leakage of a kind of high speed suitable for ultralow temperature according to claim 2, it is characterised in that：Motor
(1) output shaft end is offered with female mounting hole (23), extending shaft (6) end by be arranged external screw thread with
The output shaft of motor (1) is threadedly coupled, and hand of spiral is opposite with the output shaft direction of rotation of motor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810657335.9A CN108716469A (en) | 2018-06-25 | 2018-06-25 | A kind of micro- hot centrifugal pump of leakage of high speed suitable for ultralow temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810657335.9A CN108716469A (en) | 2018-06-25 | 2018-06-25 | A kind of micro- hot centrifugal pump of leakage of high speed suitable for ultralow temperature |
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| Publication Number | Publication Date |
|---|---|
| CN108716469A true CN108716469A (en) | 2018-10-30 |
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ID=63913194
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810657335.9A Pending CN108716469A (en) | 2018-06-25 | 2018-06-25 | A kind of micro- hot centrifugal pump of leakage of high speed suitable for ultralow temperature |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110017285A (en) * | 2019-04-17 | 2019-07-16 | 中国科学院高能物理研究所 | A kind of vertical low temperature liquid centrifugal pump |
| CN110940788A (en) * | 2019-11-29 | 2020-03-31 | 北京航天试验技术研究所 | Be used for liquid hydrogen space on-orbit management ground vacuum test adiabatic support frock system |
Citations (10)
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| CN208380888U (en) * | 2018-06-25 | 2019-01-15 | 杭州新亚低温科技有限公司 | A kind of micro- hot centrifugal pump of leakage of high speed suitable for ultralow temperature |
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| JPS5738694A (en) * | 1980-08-13 | 1982-03-03 | Mitsubishi Electric Corp | Liquefied gas pump |
| JPH06193598A (en) * | 1992-08-19 | 1994-07-12 | Japan Atom Energy Res Inst | Very low temperature rotary equipment |
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| JP2008184960A (en) * | 2007-01-29 | 2008-08-14 | Cap Co Ltd | Fan for blowing high temperature gas |
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| JP2011252442A (en) * | 2010-06-02 | 2011-12-15 | Ihi Corp | Very low temperature rotary machine |
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| CN106224246A (en) * | 2016-08-31 | 2016-12-14 | 上海交通大学 | A kind of Vacuum cooling case low drain small-sized low-temperature centrifugal pump of heat |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110017285A (en) * | 2019-04-17 | 2019-07-16 | 中国科学院高能物理研究所 | A kind of vertical low temperature liquid centrifugal pump |
| WO2020211434A1 (en) * | 2019-04-17 | 2020-10-22 | 中国科学院高能物理研究所 | Vertical cryogenic liquid centrifugal pump |
| AU2019440859B2 (en) * | 2019-04-17 | 2023-04-27 | Institute Of High Energy Physics, Chinese Academy Of Sciences | Vertical cryogenic liquid centrifugal pump |
| CN110940788A (en) * | 2019-11-29 | 2020-03-31 | 北京航天试验技术研究所 | Be used for liquid hydrogen space on-orbit management ground vacuum test adiabatic support frock system |
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