CN106224246B - A kind of Vacuum cooling case small-sized low-temperature centrifugal pump of low drain heat - Google Patents
A kind of Vacuum cooling case small-sized low-temperature centrifugal pump of low drain heat Download PDFInfo
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- CN106224246B CN106224246B CN201610792221.6A CN201610792221A CN106224246B CN 106224246 B CN106224246 B CN 106224246B CN 201610792221 A CN201610792221 A CN 201610792221A CN 106224246 B CN106224246 B CN 106224246B
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D7/00—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04D7/02—Pumps adapted for handling specific fluids, e.g. by selection of specific materials for pumps or pump parts of centrifugal type
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/04—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
- F04D29/04—Shafts or bearings, or assemblies thereof
- F04D29/043—Shafts
- F04D29/044—Arrangements for joining or assembling 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
- F04D29/08—Sealings
- F04D29/10—Shaft sealings
- F04D29/106—Shaft sealings 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
- F04D29/40—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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/586—Cooling; Heating; Diminishing heat transfer specially adapted for liquid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The present invention relates to a kind of Vacuum cooling case small-sized low-temperature centrifugal pumps of low drain heat, comprising: motor (1)；Magnetic fluid dynamic sealing component (2): the shaft for the motor (1) that the connection of its moving axis is positioned above, shell connect the connecting flange (3) being disposed below；Connecting flange (3): for installation on vacuum cavity；Sleeve (4): being located in vacuum cavity, and upper end connects the shell of magnetic fluid dynamic sealing component (2), and lower end connects spiral case (5)；Spiral case (5): it is located in vacuum cavity；Transmission shaft (10): it is located in sleeve (4), and the upper end is pierced by the shaft of moving axis connection motor (1) of the sleeve (4) through magnetic fluid dynamic sealing component (2), lower end is pierced by the impeller (14) that sleeve (4) connection is arranged in spiral case (5)；Impeller (14): being that (5) fill vaned wheel disc in the spiral case.Compared with prior art, present system structure is simple, low manufacture cost, safe and reliable, can be effectively used for the occasions such as space flight and realizes that the low drain heat pump of cryogen is sent.
Description
Technical field
The present invention relates to a kind of centrifugal pumps, more particularly, to a kind of Vacuum cooling case small-sized low-temperature centrifugal pump of low drain heat, tool
It is to be related to low-temperature end component to be in the intracorporal low-temperature centrifugal pump of vacuum chamber that body, which is said,.
Background technique
In the transmission process of cryogenic fluid, cryogenic liquid pump is a core drive equipment, and function is by defeated
Enter mechanical work driving cryogenic liquid or is pressurized for cryogenic liquid.Currently, cryogenic pump is in aerospace, cryogenic engineering, energy
The industrial applications such as work are extensive.Wherein, cryogenic liquid pump is mainly used for the conveying of liquid hydrogen, liquid oxygen etc. in aerospace field and adds
Note.
The cryogenic pump of purposes such as it is applied to the charging liquid at low-temperature such as liquid nitrogen, liquid oxygen, liquefied natural gas currently on the market, fills
It is substantially all the feature for showing that volume is big, leakage heat is serious, or even does not take targeted pump head insulation；Applied to doctor
Miniaturization cryogenic liquid pump in department, institute and scientific experiment room is then typically all to be realized in the way of liquid itself gasification pressurization,
Common hand pinches leather bag/pedal or electrothermal, and the poor accuracy in terms of operating with pump discharge control more crucially can not
As process circulating pump.And in some special low-temperature working occasions, such as pressure of the cryogenic propellant long-term preservation of in-orbit storage tank
In power control loop process, cryogenic pump is not required nothing more than and realizes Loop Liquid circulation pumping in the case where consuming smaller power, and
And it requires to realize leakage heat small as far as possible.The Joule heat either pumped or the extraneous leakage heat imported by the low temperature pump housing, will all lead
The additional evaporation for causing liquid in storage tank, causes propellant to lose；And the vaporization that leakage is thermally-induced, it will be so that there is gas-liquid two in flowing
Phase, to be impacted to pipe resistance, system stability etc..
After searching and discovering the prior art:
The patent of Authorization Notice No. CN203214283U discloses a kind of liquid nitrogen pump, including Liquid absorption ball, vaporization chamber, outer tube,
Muffler is built in outer tube by inner tube, muffler, pump plug, sealing ring, outlet tube and liquid valve, the liquid nitrogen pump, gasification efficiency
It is higher, the pressure of output liquid nitrogen, the automatic drain pressure release in superpressure can be observed in real time.But the liquid nitrogen pump is using by close
Being pressurized in container certainly is closed, liquid is squeezed out to realize, is not a kind of mechanical pump on stricti jurise, is a kind of hand-pinch type
Manual liquid nitrogen pump, it is difficult to be applied to that the occasion of cryogenic liquid is continuously conveyed for a long time.
The patent of Authorization Notice No. CN201269199 discloses a kind of cryogenic liquid pump, which includes the pump housing and drive
Dynamic motor, the pump housing is externally provided with ice chest, interior to be equipped with thermal insulation material, and the pump housing and drive motor shaft connecting place are equipped with separate cavities, and at it
It opens up peep hole on side wall, inside observable separate cavities, judges motor steering and sealing element situation.Although the device is in the pump housing
It is provided with thermal insulation material outside, is equipped with separate cavities in the pump housing and drive motor shaft connecting place, reduces cryogenic liquid to a certain extent
The leakage heat of outwardly environment is pumped, but its thermal retardation form and pump body structure form determine it still and have biggish leakage heat.And it is exhausted
The difference of hot form also lead to pump structure, with material difference.
The patent of Authorization Notice No. CN202140263U discloses a kind of cryogenic liquid pump for conveying natural gas, ontology one
There are a liquid-inlet and a liquid outlet in side, and upper end is connected with a separator tube with cryogenic globe valve and safety valve.The device will
Cryogenic globe valve moves down, and increases the gas production of equipment, while improving the safety of equipment.But the geometry of the cryogenic liquid pump
Size and weight are huge, are mainly used for filling the mass liquid of tank car or storage tank etc., arranged not outside the pump housing using heat preservation
It applies, will appear the pump housing and external environment heat exchange at work acutely, phenomena such as pump housing surface generates frosting moisture condensation, can not apply
In the in-orbit occasion of spacecraft space.
It can be seen that published cryogenic liquid pump is unable to satisfy the in-orbit storage thermodynamics control of space flight cryogenic propellant at present
The application demands such as circulate in process processed.
Summary of the invention
Simple, leakage heat that it is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of structures
Measure it is small, safe and reliable, be easy to disassembling, assembling and replacing, the small-sized low-temperature centrifugal pump of motor-driven Vacuum cooling case low drain heat.
The purpose of the present invention can be achieved through the following technical solutions: a kind of Vacuum cooling case with the small-sized low temperature of low drain heat from
Heart pump characterized by comprising connecting flange, motor, magnetic fluid dynamic sealing component, impeller, spiral case, sleeve, transmission shaft, VCR
The parts such as feed liquor interface tube, VCR drain interface tube.
Include:
Motor: for providing the power of low-temperature centrifugal pump；
Magnetic fluid dynamic sealing component: being made of shell, moving axis and magnetic fluid, and shell is installed on connecting flange below
On, end shaft is separately connected the machine shaft being positioned above and the transmission shaft being disposed below, and magnetic fluid is encapsulated in shell
Gap between moving axis, to achieve the effect that sealing；
Connecting flange: it is located above vacuum cavity, for the installation of the pump housing, completes vacuum sealing jointly with vacuum cavity；
Connecting flange completes the vacuum sealing with vacuum cavity by O-ring and pretension bolt.
Sleeve: being located in vacuum cavity, and upper end connects the shell of magnetic fluid dynamic sealing component, and lower end connects spiral case, plays branch
Support and sealing function；
Spiral case: being located in vacuum cavity, plays guiding role to the flowing of fluid, reduces the energy loss in pump；
Transmission shaft: it is located in sleeve, length is longer, about 350mm, and the upper end is pierced by sleeve through magnetic fluid dynamic sealing component
Moving axis connection motor shaft, lower end is pierced by the impeller that sleeve connection is arranged in spiral case；
Impeller: being to fill vaned wheel disc in spiral case, for providing the static energy and dynamic pressure energy of cryogenic liquid.
The spiral case includes dismountable spiral case pedestal and spiral case cover board two parts, and the two fills indium silk by groove
Completion sealing is connected with tools for bolts ' pretension, spiral case is equipped with feed liquor honeycomb duct and drain honeycomb duct.
The epoxy resin material that the transmission shaft is about 0.2~0.4W/ (mK) using thermal coefficient, both ends point
Not Lian Jie top magnetic fluid dynamic sealing component moving axis and lower section impeller.
The sleeve realizes the effect of support and airtight isolation using stainless-steel thin-wall pipe structure, two
End is separately connected the shell of magnetic fluid dynamic sealing component and the spiral case pedestal of spiral case, coaxial with transmission shaft, and is contained in interior
Portion；Low temperature resistant miniature bearing there are two being set between transmission shaft and sleeve；Sleeve will go out micro- along transmission axis direction loss in spiral case
Cryogenic liquid or gas confinement are measured in sleeve volume, avoids leaking in vacuum cavity.
Feed liquor honeycomb duct on the spiral case is connected with drain honeycomb duct using VCR interface, and VCR feed liquor interface tube is formed
With VCR drain interface tube, advantageously ensures that the zero leakage of positive pressure in low temperature down tube, the outer high vacuum of pipe, be also beneficial to dismount.
Compared with prior art, the invention has the following advantages that
1, long axle construction is used in the present invention, that is, devises longer transmission shaft.It is long from the point of view of entire cryogenic liquid pump
Transmission shaft make low-temperature working end i.e. impeller spiral case region elongated at a distance from room temperature end i.e. connecting flange part, by Fourier
Thermally conductive law also just reduces low it is found that this greatly reduces cold end to the leakage heat at room temperature end via transmission shaft and its sleeve
Vaporization of the geothermal liquid inside cryogenic liquid pump of the present invention, also improves the working efficiency of cryogenic liquid pump.
2, the heat-insulated method of vacuum cavity is used in the present invention, and sleeve and long shaft portion are placed in vacuum cavity and worked as
In, it realizes the outer vacuum insulation protection of sleeve, guarantees that the bad phenomenons such as frosting moisture condensation will not occur for these part of the surfaces, it is low in pump
Geothermal liquid, which will not be vaporized largely, causes the working efficiency of pump to reduce.
3, it present invention uses magnetic fluid dynamic sealing component, had both realized and the rotation crossing cabin of motor is transferred to pump drive
Axis also ensures the good dynamic sealing of vacuum cavity；Mating sleeve structure, will be via the spiral case and transmission shaft of cryogenic liquid pump
Between gap loss go out liquid or gas confinement in sleeve volume, leak to it in vacuum cavity, so that low
Geothermal liquid pump is resolved in the dynamic sealing problem of room temperature end and low-temperature end.
4, many places of the present invention are connected with tools for bolts ' pretension using flanged joint, one be entire cryogenic liquid pump connection method
Orchid is easily installed, maintenance；The other is two parts of spiral case, maintenance, maintenance convenient for spiral case and impeller.Guaranteeing to seal
While effect, the installation, disassembly and replacement of all parts are facilitated.
5, major part of the present invention successively includes VCR feed liquor interface tube, feed liquor honeycomb duct, VCR from low-temperature end to indoor temperature end
Drain interface tube, drain honeycomb duct, impeller, spiral case, long transmission shaft, sleeve, bearing, magnetic fluid dynamic seal, connecting flange, electricity
Machine etc..Wherein motor, connecting flange and magnetic fluid dynamic sealing component are located at room temperature end, and connecting flange is for integrally pacifying centrifugal pump
Loaded on vacuum chamber, biography of the motor power to transmission shaft is realized while realizing airtight sexual isolation using magnet fluid sealing component
It passs；Into, drain interface tube, honeycomb duct, impeller, spiral case etc. be all located at low-temperature end, form energy Switching Core component, spiral case is divided into
Dismountable two parts are sealed by indium silk；Long transmission shaft and sleeve connection between room temperature end and low-temperature end, sleeve with
Transmission shaft is coaxial, and sleeve plays support and cold end seal.Low-temperature centrifugal pump is insulated by vacuum cavity, and leakage heat is derived only from biography
Moving axis and sleeve realize the requirement of ultralow leakage heat.Structure is simple, low manufacture cost, safe and reliable, can be effectively used for the fields such as space flight
It closes and realizes that the low drain heat pump of cryogen is sent.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of low-temperature centrifugal pump of the present invention；
Fig. 2 is the schematic cross-sectional view at connecting flange of the present invention；
Fig. 3 is the schematic cross-sectional view at impeller spiral case of the present invention.
Figure label: 1 is motor, and 2 be magnetic fluid dynamic seal, and 3 be connecting flange, and 4 be sleeve, 5 be spiral case, 6 be into
Liquid honeycomb duct 7 is VCR feed liquor interface tube, 8 is drain honeycomb duct, and 9 be VCR drain interface tube, and 10 be transmission shaft, and 11 be bearing,
12 be spiral case pedestal, and 13 be groove, and 14 be impeller, and 15 be spiral case cover board, and 16 be vacuum cavity.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment
As shown in Figure 1, Figure 2, Figure 3 shows: a kind of small-sized low-temperature centrifugal pump of low drain heat includes motor 1, magnetic fluid dynamic sealing component
2, connecting flange 3, sleeve 4, spiral case 5, transmission shaft 10, impeller 14, vacuum cavity 16 etc..Connecting flange 3 is located at vacuum cavity 16
The vacuum sealing with vacuum cavity 16 is completed by O-ring and pretension bolt with vacuum cavity 16 in top, and center aperture supplies
Transmission shaft and sleeve pass through.16 one end of vacuum cavity is circular head, and the other end is the cylinder of edge interior welding method orchid outstanding,
For completely cutting off workpiece and atmospheric environment at low temperature.
The top of magnetic fluid dynamic sealing component 2 is arranged in motor 1, for providing the power of low-temperature centrifugal pump；
Magnetic fluid dynamic sealing component 2 is made of shell, moving axis and magnetic fluid, and shell is by O-ring and is bolted completion
With the connection of connecting flange 3 below, end shaft is separately connected the shaft and below of the motor 1 that is positioned above
Transmission shaft 10, magnetic fluid is encapsulated in the gap between shell and moving axis, to achieve the effect that sealing.
Sleeve 4: being located in vacuum cavity, and upper end connects the shell of magnetic fluid dynamic sealing component 2, and lower end connects spiral case 5
Spiral case pedestal 12 plays support and sealing function；The sleeve 4 realizes support using stainless-steel thin-wall pipe structure
With the effect of airtight isolation；Sleeve 4 and transmission shaft 10 are coaxial, and transmission shaft 10 is included in inside sleeve 4；Transmission shaft 10 and sleeve
Low temperature resistant miniature bearing there are two being set between 4.
Transmission shaft 10: it is located in sleeve 4, and its upper and lower ends is pierced by sleeve 4 and is separately connected magnetic fluid dynamic sealing component 2
Moving axis and the impeller 14 being arranged in spiral case 5.The transmission shaft 10 is about 0.2~0.4W/ (m using thermal coefficient
K epoxy resin material).
Impeller 14: being 5 to fill vaned wheel disc in the spiral case, for providing static energy and the dynamic pressure of cryogenic liquid
Energy.Impeller 14 is connected by screw to be fixed on transmission shaft 10 with pin connection, is installed rear impeller bottom surface and is located at close to spiral case
In the plane of pedestal, the inner face of 14 surface of impeller and spiral case cover board 15 is also maintained in the range of 0.5~1mm, and this smaller
Gap helps avoid cryogenic liquid pump and the unfavorable phenomenon such as whirlpool occurs at work, influences the performance of cryogenic liquid pump.
Spiral case 5: being located in vacuum cavity, plays guiding role to the flowing of fluid, reduces the energy loss in pump；It is described
Spiral case 5 include 15 two parts of dismountable spiral case pedestal 12 and spiral case cover board, the two passes through groove filling indium silk and bolt
It is tightly connected completion sealing in advance, specifically: after installing impeller, the 13 filling indium silk on the groove of spiral case cover board 15, later
It is connected through a screw thread the sealing for completing spiral case cover board 15 and spiral case pedestal 12.It is additionally provided on spiral case as feed liquor honeycomb duct 6 and drain
Honeycomb duct 8, the two pass through connection VCR interface and form VCR feed liquor interface tube 7 and VCR drain interface tube 9, have not only facilitated connection, but also
With good low temperature seal performance.Transfer pipeline passes through outside preset inlet and outlet crossing cabin to vacuum cavity 16.
By taking liquid oxygen pumped as an example, cryogenic pump is inserted into vacuum tank/clack box tapping from its bottom, passes through connecting flange
3 are tightly connected with the flange on vacuum tank/clack box with O-ring.Then by the VCR feed liquor interface tube 7 of cryogenic pump and from liquid
Oxygen storage tank carrys out liquid pipe connection, and the drain interface tube 9 of cryogenic pump is connected to external high-pressure side liquid supply pipe；It is powered to cryogenic pump
And suitable motor revolving speed is adjusted, realize the circulation pumping of liquid oxygen.
The above description of the embodiments is intended to facilitate ordinary skill in the art to understand and use the invention.
Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein general
Principle is applied in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, ability
Field technique personnel announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be of the invention
Within protection scope.
Claims (5)
1. a kind of Vacuum cooling case small-sized low-temperature centrifugal pump of low drain heat characterized by comprising
Motor (1): for providing the power of low-temperature centrifugal pump；
Magnetic fluid dynamic sealing component (2): being made of shell, moving axis and magnetic fluid, and shell is installed on connecting flange (3) below
On, end shaft is separately connected motor (1) shaft being positioned above and the transmission shaft (10) that is disposed below；Magnetic fluid encapsulation
In gap between shell and moving axis, to achieve the effect that sealing；
Connecting flange (3): it is located above vacuum cavity, for the installation of the pump housing, completes vacuum sealing jointly with vacuum cavity；
Sleeve (4): being located in vacuum cavity, and upper end connects the shell of magnetic fluid dynamic sealing component (2), and lower end connects spiral case (5),
Play support and sealing function；
Spiral case (5): being located in vacuum cavity, plays guiding role to the flowing of fluid, reduces the energy loss in pump；
Transmission shaft (10): being located in sleeve (4), and the upper end is pierced by sleeve (4) and connects through the moving axis of magnetic fluid dynamic sealing component (2)
The shaft of motor (1) is connect, lower end is pierced by the impeller (14) that sleeve (4) connection is arranged in spiral case (5)；
Impeller (14): being that (5) fill vaned wheel disc in the spiral case, for providing static energy and the dynamic pressure of cryogenic liquid
Energy.
2. a kind of Vacuum cooling case according to claim 1 small-sized low-temperature centrifugal pump of low drain heat, which is characterized in that described
Spiral case (5) includes dismountable spiral case pedestal (12) and spiral case cover board (15) two parts, the two by groove fill indium silk and
Sealing is completed in tools for bolts ' pretension connection, and spiral case (5) is equipped with feed liquor honeycomb duct (6) and drain honeycomb duct (8).
3. a kind of Vacuum cooling case according to claim 1 small-sized low-temperature centrifugal pump of low drain heat, which is characterized in that described
Transmission shaft (10) is the epoxy resin material of 0.2~0.4W/ (mK) using thermal coefficient, and both ends are separately connected top
The impeller (14) of magnetic fluid dynamic sealing component (2) moving axis and lower section.
4. a kind of Vacuum cooling case according to claim 1 small-sized low-temperature centrifugal pump of low drain heat, which is characterized in that described
Sleeve (4) realizes the effect of support and airtight isolation using stainless-steel thin-wall pipe structure, and both ends are separately connected magnetic
The shell of fluid dynamic sealing component (2) and the spiral case pedestal (12) of spiral case (5), coaxially with transmission shaft (10), and are contained in
It is internal；Low temperature resistant miniature bearing there are two being set between transmission shaft (10) and sleeve (4).
5. a kind of Vacuum cooling case according to claim 2 small-sized low-temperature centrifugal pump of low drain heat, which is characterized in that described
Feed liquor honeycomb duct (6) on spiral case (5) connect with drain honeycomb duct (8) using VCR interface, formation VCR feed liquor interface tube (7) and
VCR drain interface tube (9) advantageously ensures that the zero leakage of positive pressure in low temperature down tube, the outer high vacuum of pipe, is also beneficial to dismount.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610792221.6A CN106224246B (en) | 2016-08-31 | 2016-08-31 | A kind of Vacuum cooling case small-sized low-temperature centrifugal pump of low drain heat |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610792221.6A CN106224246B (en) | 2016-08-31 | 2016-08-31 | A kind of Vacuum cooling case small-sized low-temperature centrifugal pump of low drain heat |
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| CN106224246A CN106224246A (en) | 2016-12-14 |
| CN106224246B true CN106224246B (en) | 2019-04-02 |
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| CN201610792221.6A Active CN106224246B (en) | 2016-08-31 | 2016-08-31 | A kind of Vacuum cooling case small-sized low-temperature centrifugal pump of low drain heat |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035675B (en) * | 2017-05-18 | 2019-03-12 | 上海交通大学 | The small-sized cryogenic liquid Pump Characteristic Test System of vacuum insulation protection |
| CN108799206A (en) * | 2018-06-25 | 2018-11-13 | 杭州新亚低温科技有限公司 | A kind of micro- leakage heat insulating construction of ultralow temperature express pump |
| CN108626133B (en) * | 2018-06-25 | 2024-03-19 | 杭州新亚低温科技有限公司 | Three-point supporting movable rotor high-temperature high-pressure centrifugal pump |
| CN108716469A (en) * | 2018-06-25 | 2018-10-30 | 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 |
| CN109973440B (en) * | 2019-04-12 | 2024-05-24 | 中集安瑞科工程科技有限公司 | Mounting structure of vertical cylinder bag pump |
| 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 |
| CN110906039B (en) * | 2019-11-14 | 2022-03-29 | 上海交通大学 | Adjustable low-temperature throttle valve device for vacuum cooling box |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5738694A (en) * | 1980-08-13 | 1982-03-03 | Mitsubishi Electric Corp | Liquefied gas pump |
| US6655930B2 (en) * | 2001-02-21 | 2003-12-02 | Nikkiso Co., Ltd. | Insulation means for a centrifugal pump |
| CN104564711A (en) * | 2015-01-19 | 2015-04-29 | 江苏省特种设备安全监督检验研究院无锡分院 | Submerged double-discharging magnetic driving pump for conveying liquefied natural gas |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011034840A2 (en) * | 2009-09-15 | 2011-03-24 | Lawrence Pumps, Inc. | Vertically rotatable shaft assembly with thermally insulated housing |
-
2016
- 2016-08-31 CN CN201610792221.6A patent/CN106224246B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5738694A (en) * | 1980-08-13 | 1982-03-03 | Mitsubishi Electric Corp | Liquefied gas pump |
| US6655930B2 (en) * | 2001-02-21 | 2003-12-02 | Nikkiso Co., Ltd. | Insulation means for a centrifugal pump |
| CN104564711A (en) * | 2015-01-19 | 2015-04-29 | 江苏省特种设备安全监督检验研究院无锡分院 | Submerged double-discharging magnetic driving pump for conveying liquefied natural gas |
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|---|---|
| CN106224246A (en) | 2016-12-14 |
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