CN107035675A - The small-sized cryogenic liquid Pump Characteristic Test System of vacuum insulation protection - Google Patents

The small-sized cryogenic liquid Pump Characteristic Test System of vacuum insulation protection Download PDF

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Publication number
CN107035675A
CN107035675A CN201710353946.XA CN201710353946A CN107035675A CN 107035675 A CN107035675 A CN 107035675A CN 201710353946 A CN201710353946 A CN 201710353946A CN 107035675 A CN107035675 A CN 107035675A
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China
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cryogenic liquid
liquid pump
tested
flange plate
pump
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CN107035675B (en
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黄永华
林晖
蔡爱峰
王如竹
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Shanghai Jiaotong University
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Shanghai Jiaotong University
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B51/00Testing machines, pumps, or pumping installations

Abstract

The invention discloses a kind of small-sized cryogenic liquid Pump Characteristic Test System of vacuum insulation protection, including flange plate, vacuum (-tight) housing, tested cryogenic liquid pump, vavuum pump, liquid nitrogen storage tank, open Dewar bottle, inlet ductwork and export pipeline, pressure sensor, temperature sensor.Tested cryogenic liquid pump suspension is installed on flange plate, and in vacuum chamber, the import and export pipeline crossing cabin on flange plate respectively.Pressure sensor is arranged to connect with the import and export pipeline after crossing cabin on flange plate by capillary;Temperature sensor is inserted into the import and export pipeline in vacuum cavity;Flowmeter is provided with the export pipeline positioned at vacuum chamber.The small-sized cryogenic liquid pump lift Performance Test System of the present invention possesses the parameter such as low drain heat, pressure, the temperature that can be imported and exported to small-sized cryogenic liquid pump and measured, the installation requirement of the polytype pump housings such as crossing cabin formula cryogenic pump, in-line arrangement cryogenic pump is met simultaneously, is dismounted, is changed convenient advantage.

Description

The small-sized cryogenic liquid Pump Characteristic Test System of vacuum insulation protection
Technical field
Surveyed the present invention relates to the small-sized cryogenic liquid pump performance in cryogenic technique field, more particularly to a kind of protection of vacuum insulation Test system.
Background technology
In cryogen course of conveying or thermodynamic cycle, cryogenic liquid pump is a core drive equipment, its work( Can drive cryogenic liquid to flow or be pressurized for cryogenic liquid by inputting mechanical work.Cryogenic liquid pump is in space flight, space division, energy The various fields that the industries such as source, chemical industry are related to cryogenic engineering are widely used.Cryogenic liquid pump is before formal come into operation, it is necessary to Its hydraulic performance is tested, it is ensured that it is issued to design performance index in worst cold case, and with enough securities and Reliability.Because cryogenic liquid has the characteristics such as temperature is low, latent heat is small, easy vaporization, the test condition to cryogenic liquid pump is proposed High request.For the microminiature cryogenic liquid pump of space flight in orbit, itself sufficiently small heat production and low drain Heat is the essence requirement of such cryogenic liquid pump product, and this also requires that corresponding Performance Test System has high adiabatic, low drain Hot property.In addition, such Performance Test System needs to meet the polytype pump housings such as in-line arrangement cryogenic pump, crossing cabin formula cryogenic pump Installation requirement, should possess dismounting, change the characteristics of facilitating.
Retrieval by prior art finds that the Performance Test System of small-sized cryogenic liquid pump of the prior art has leakage Heat is larger, not easy to remove with changing tested pump testing or the unrealized temperature imported and exported to cryogenic liquid pump, the measurement of pressure, no The problems such as specific performance parameter of tested pump can be obtained.For example:
Authorization Notice No. CN103758744B patent discloses a kind of low temperature Test-bed for pump, including memory block, race way, Test section and vent gas treatment area, test section set tested pump testing, and memory block passes through pipeline connection to race way, race way connection quilt Pump is tested, test loop is formed.The working medium reusable edible of the system, but the system is not thermally shielded place to pipeline and the pump housing Reason, inner cryogenic liquid is easily vaporized, and the performance impact to cryogenic liquid pump is larger.The other system is not imported and exported to cryogenic pump The parameter such as pressure, temperature measure, it is impossible to obtain the specific performance parameter of tested pump.
Authorization Notice No. CN105020150B patent discloses a kind of low-temperature centrifugal pump test system, including supercharging gas Bottle, open Dewar, supercharging cavity, heat exchange pipe dish and throttling pore, pressurized gas cylinder are connected to supercharging cavity, are pressurized the entrance of cavity Be linked in sequence heat exchange coil, throttling pore, and the gateway of tested low-temperature centrifugal pump is respectively connecting to throttling pore and booster cavity Body, forms test loop.The cavitation that the system can substantially eliminate low-temperature centrifugation pump intake by improving inlet pressure influences, pipe Road is located under low-temperature liquid level, it is to avoid the vaporization of cryogen, but the system middle pump body is located among cryogenic liquid, leakage heat It is larger, and be inconvenient to dismantle with changing tested pump testing, the measurement for temperature, pressure is not considered yet.
Authorization Notice No. CN104110368A patent discloses a kind of high-pressure liquid nitrogen pumping unit test device, including successively Test cell, damping unit unit and adjustment unit that connected liquid nitrogen container, liquid nitrogen pump, check valve and pressure sensor is constituted. The system realizes the conversion that fluid pressure loading is loaded to gas pressure, can measure the parameters such as pressure, flow, but can not survey The import and export temperature rise of liquid nitrogen pump is measured, the insulation to the pump housing is not considered yet, leakage heat is larger and can not measure.
Therefore those skilled in the art are directed to developing a kind of small-sized cryogenic liquid pump of the vacuum insulation protection of low drain heat Lift Performance Test System, can measure to parameters such as pressure, the temperature of the import and export of small-sized cryogenic liquid pump, meet simultaneously The installation requirement of the polytype pump housings such as in-line arrangement cryogenic pump, crossing cabin formula cryogenic pump, possesses dismounting, changes the characteristics of facilitating.
The content of the invention
In view of the defect of prior art, the technical problems to be solved by the invention are to provide a kind of simple in construction, easy Operation, the cryogenic liquid pump test system of safe and reliable low drain heat, can realize the steady operation under low-temperature working environment, use In the properties test to cryogenic liquid pump, while suitable for the test to a variety of different types of cryogenic liquid pumps.
To achieve the above object, the invention provides a kind of small-sized cryogenic liquid pump lift performance survey of vacuum insulation protection Test system, including flange plate, vacuum (-tight) housing, tested cryogenic liquid pump, vavuum pump, liquid nitrogen storage tank, open Dewar bottle, inlet ductwork With export pipeline, pressure sensor, temperature sensor, wherein,
The flange plate is tightly connected with the vacuum (-tight) housing and collectively forms vacuum chamber, and the flange plate is provided with and taken out Vacuum interface, the interface that vacuumizes is connected with the vavuum pump;
The tested cryogenic liquid pump suspension is installed on the flange plate, and in the vacuum chamber, it is described enter Mouthful pipeline and the export pipeline crossing cabin on the flange plate respectively, one end of the inlet ductwork connects the liquid nitrogen storage Tank, the other end connects the tested cryogenic liquid pump by flexible transition tube, and the liquid nitrogen storage tank is used to be the tested low temperature Liquid pump provides low-temperature test fluid;One end of the export pipeline connects the tested cryogenic liquid by flexible transition tube Pump, the other end connects the open Dewar bottle, and the open Dewar bottle receives the cryogenic liquid of tested cryogenic pump outflow;It is described enter Mouth pipeline includes inlet tube, and the export pipeline includes outlet, and the inlet ductwork and export pipeline are by cryogenic delivery pipe Composition;The liquid nitrogen storage tank and the open Dewar bottle are respectively positioned on the outside of the vacuum chamber;
The pressure sensor is arranged to be tested with described after crossing cabin on the flange plate via capillary pressure guiding pipe The inlet ductwork of cryogenic liquid pump is connected with the export pipeline;The temperature sensor is inserted by the way of cutting ferrule installation Enter into the inlet ductwork and the export pipeline of the tested cryogenic liquid pump in vacuum cavity;Positioned at institute The export pipeline for stating vacuum chamber is provided with flowmeter, and quality meter is provided with below the open Dewar bottle.
Further, the center position of the flange plate is provided with hole, and heavy provided with O-ring conduit and pretension screw thread Hole, is provided with rubber o-ring at the O-ring conduit, the flange plate by the rubber o-ring, clip with it is described true Sky cover forms sealing system.
Further, the tested cryogenic liquid pump is tested crossing cabin formula cryogenic liquid pump or tested in-line arrangement cryogenic liquid Pump.
Further, the flange plate passes through the connection on the rubber o-ring and the crossing cabin formula cryogenic liquid pump Flange is connected with the blind plate sealing for being hung with the in-line arrangement cryogenic liquid pump.
Further, 3 KF flange-interfaces are additionally provided with the flange plate, wherein, it is used separately as described vacuumize and connects Mouthful, the capillary pressure guiding pipe crossing cabin of the pressure sensor, the signal wire and motor power-supply wire crossing cabin of the temperature sensor Passage.
Further, the inlet ductwork and the export pipeline constitute Dewar tubular construction by inner tube and sleeve pipe, described The bottom of sleeve pipe is connected with the flange plate, the clearance space between said inner tube and described sleeve pipe and the vacuum chamber phase It is logical.
Further, the blind plate is connected by internal thread counterbore with fixed plate, collectively forms the tested in-line arrangement low The suspension holdfast of geothermal liquid pump, the tested in-line arrangement cryogenic liquid pump is suspended in the fixed plate.
Further, the fixed plate is hollow out fiberglass.
Further, the pressure sensor is difference gauge, in normal temperature atmospheric environment.
Further, including 2 flexible transition connecting tubes, wherein one one end of the flexible transition connecting tube with it is true The inlet tube in cavity is connected by cutting ferrule, and the other end is connected with the import of tested cryogenic liquid pump by VCR interfaces;Institute The outlet stated in another one end and vacuum chamber of flexible transition connecting tube is connected by cutting ferrule, and the other end is with being tested The outlet of cryogenic liquid pump is connected by VCR interfaces.
Further, the flexible transition connecting tube is thin-wall corrugated tube.Had using bellows compared to hard tube adjustable The advantage of section property and install convenient.
Further, it is enclosed with the inlet ductwork and the export pipeline positioned at the vacuum chamber many Layer heat-insulating material (MLI), further to reduce leakage heat on the basis of vacuum.
Further, rubber and plastic is coated in the inlet ductwork and the export pipeline outside the vacuum chamber Cotton.
The present invention has following beneficial technique effect:
1. the present invention realizes the high vacuum condition in vacuum chamber using vavuum pump, provided well to be tested cryogenic liquid pump Adiabatic environment;Flange plate is arranged to be not directly contacted with the pipeline of transporting low temperature liquid, reduces pipeline to flange plate Leakage heat;By wrapping up heat-insulating material respectively to the pipeline inside and outside vacuum chamber, so as to further reduce leakage heat;
2. the present invention can be entered by setting pressure and temperature sensing device in a test system to small-sized cryogenic liquid pump The parameters such as pressure, the temperature of outlet are measured, and realize and the properties of cryogenic liquid pump are tested;Simultaneously by the way that temperature is passed Sensor is inserted into the tested cryogenic liquid pump the import and export pipeline in vacuum cavity, and cryogenic flow meter is arranged in very In drain line in cavity so that the data of measurement are more accurate;
3. the present invention uses the inlet and outlet of the tested cryogenic liquid pump of flexible transition connecting tube connection so that test system With controllability and install convenient;
4. the present invention meets the installation requirement of the polytype pump housings such as in-line arrangement cryogenic pump, crossing cabin formula cryogenic pump simultaneously, Dismounting, replacing are convenient;
5. the present invention small-sized cryogenic liquid Pump Characteristic Test System it is simple in construction, it is easy operation, it is safe and reliable.
The technique effect of the design of the present invention, concrete structure and generation is described further below with reference to accompanying drawing, with It is fully understood from the purpose of the present invention, feature and effect.
Brief description of the drawings
Fig. 1 is the structural representation of the cryogenic liquid pump test system of a preferred embodiment of the present invention;
Fig. 2 is the sectional structure at the flange plate of the cryogenic liquid pump test system of a preferred embodiment of the present invention Schematic diagram;
Fig. 3 for a preferred embodiment of the present invention cryogenic liquid pump test system flange plate upper inlet pipeline or Export pipeline cross section structure diagram;
Fig. 4 is the partial structural diagram of the cryogenic liquid pump test system of another preferred embodiment of the present invention;
Reference:1:Motor, 2:Adpting flange, 3:Flange plate, 4:Vacuum (-tight) housing, 5:Inlet tube, 6:Outlet, 7:Hair Thin pressure guiding pipe, 8:KF flange-interfaces, 9:Handle, 10:Clip, 11:Sleeve, 12:Inlet ductwork, 13:Tested crossing cabin formula Low Temperature Liquid Body pump, 14:VCR interfaces, 15:Connector, 16:Export pipeline, 17:Flowmeter, 18:Temperature sensor, 19:Pressure sensor, 20:Valve, 21:Liquid nitrogen storage tank, 22:Open Dewar bottle, 23:For quality meter, 24:Vavuum pump, 25:Fixed plate, 26:Tested array Formula cryogenic liquid pump, 27:Flexible transition connecting tube, 28:Blind plate, 29:Sleeve pipe, 30:Inner tube, 31:O-ring conduit.
Embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention Premised on implemented, give detailed embodiment and specific operating process, but protection scope of the present invention is not limited to Following embodiments.
Embodiment 1
A kind of small-sized cryogenic liquid Pump Characteristic Test System as shown in Figure 1, including motor 1, flange plate 3, vacuum (-tight) housing 4th, crossing cabin formula cryogenic liquid pump 13, vavuum pump 24, liquid nitrogen storage tank 21, open Dewar bottle 22, inlet ductwork 12, export pipeline are tested 16th, flexible transition connecting tube 27 etc..
It is core carrier with flange plate 3, the tested suspension of crossing cabin formula cryogenic liquid pump 13 is installed on flange plate 3, method Blue cover plate 3 be provided with inlet ductwork 12 and export pipeline 16, inlet ductwork 12 and export pipeline 16 crossing cabin on flange plate 3, Inlet ductwork 12 includes inlet tube 5, and export pipeline 16 includes outlet 6, and inlet ductwork 12 and export pipeline 16 are defeated by low temperature Liquid pipe is constituted.3 KF flange-interfaces 8 and 2 handles 9 are additionally provided with flange plate 3, one of KF interfaces, which are used as vacuumizing, to be connect Mouthful, a KF interface is used for the crossing cabin of capillary pressure guiding pipe 7 of pressure sensor 19, and another KF interface is used for temperature sensor signal Line and motor power-supply wire crossing cabin.
Flange plate 3 is collectively formed on vacuum chamber, the flange plate by rubber o-ring and clip 10 with vacuum (-tight) housing 4 Provided with interface is vacuumized, the interface that vacuumizes is connected with the vavuum pump 24, and vavuum pump 24 realizes the high vacuum in vacuum chamber Condition, good adiabatic environment is provided for tested crossing cabin formula cryogenic liquid pump 13.Liquid nitrogen storage tank 21 is tested crossing cabin formula Low Temperature Liquid Body pump 13 provides low-temperature test fluid, and open Dewar bottle 22 is used for the cryogenic liquid for receiving tested cryogenic pump outflow.Inlet ductwork 12 are used to connect liquid nitrogen storage tank 21 and tested crossing cabin formula cryogenic liquid pump 13, and export pipeline 16 is used to connect tested crossing cabin formula low temperature Liquid pump 13 and open Dewar bottle 22.Pressure sensor 19 is difference gauge, in normal temperature atmospheric environment, through capillary pressure guiding pipe 7 Connected after crossing cabin with the inlet ductwork 12 of tested cryogenic liquid pump 13, export pipeline 16;Temperature sensor 18 is installed using cutting ferrule Mode is inserted into the import and export pipeline of the tested crossing cabin formula cryogenic liquid pump 13 in vacuum cavity;The cloth of temperature flow gauge 17 It is placed in the drain line in vacuum chamber;Quality meter 23 is arranged in the open lower section of Dewar bottle 22;Two flexible transition connecting tubes 27 One end is connected with the inlet tube 5 and outlet 6 in vacuum chamber with cutting ferrule respectively, and the other end enters with tested cryogenic liquid pump respectively Mouth, outlet are connected with VCR interfaces 14.
As shown in Fig. 2 the center of flange plate 3 is provided with perforate, and provided with O-ring conduit 31 and pretension screw-threaded counterbore, Tested crossing cabin formula cryogenic liquid pump 13 includes adpting flange 2 and sleeve 11, and flange plate 3 passes through rubber o-ring with adpting flange 2 It is tightly connected, adpting flange 2 is connected with sleeve 11, flange plate 3 is made up of close rubber o-ring and clip 10 and vacuum (-tight) housing 4 Envelope system.
As shown in figure 3, cryogenic liquid inlet tube 5 and outlet 6 constitute Dewar tubular construction, institute by inner tube 30 and sleeve pipe 29 State inner tube 30 not to be directly connected to flange plate 3, but in the top end face graded seal of sleeve pipe 29, the bottom of described sleeve pipe 29 with Flange plate 3 is connected, and the clearance space between inner tube 30 and sleeve pipe 29 is communicated with vacuum chamber.
After installing crossing cabin formula cryogenic liquid pump according to above-mentioned arrangement and connecting each pipeline and line, positioned at true Wrapped multiple heat-insulating material (MLI) in the inlet ductwork 12 and export pipeline 16 of cavity inside, to enter one on the basis of vacuum Step reduces leakage heat;Rubber and plastic cotton is coated in the inlet ductwork 12 and export pipeline 16 outside vacuum chamber, flange is completed afterwards Cover plate is tightly connected with vacuum (-tight) housing.
Before the start-up operation of crossing cabin formula cryogenic liquid pump, the air in the extraction vacuum cavity of vavuum pump 24 is first opened, is reached The adiabatic condition of cryogenic liquid pump is ensured to certain vacuum, then opens valve 20, it is logical from inlet tube 5 by liquid nitrogen storage tank 21 Enter the air in the cryogenic gas of certain pressure, excavationg pump and among pipeline, be passed through cryogenic liquid again afterwards and carry out precooling.Precooling Carry out after a period of time, liquid nitrogen is full of in pipeline, motor 1, the tested crossing cabin formula cryogenic liquid pump 13 of operating are at this moment opened again. After treating that pipeline heat exchange is stable after a while, from temperature sensor 18, pressure sensor 19, flowmeter 17 and quality meter Real time data is gathered on 23, the running situation and leakage enthusiasm condition of crossing cabin formula cryogenic liquid pump, and the pressure difference for passing through import and export is understood Calculate the lift of tested cryogenic liquid pump, by importing and exporting differential thermal calculation leakage heat, by flowmeter 17 and mass change obtain by Survey the flow of pump.
Embodiment 2
The present invention is applicable not only to the major axis cryogenic liquid pump that motor is placed in outside chamber, and crossing cabin formula as described in Example 1 is low Geothermal liquid pump, is also applied for in-line arrangement cryogenic liquid pump.As shown in figure 4, by the tested crossing cabin formula cryogenic liquid pump in embodiment 1 Disassembled from flange plate 3, blind plate 28 is arranged on flange plate 3, is tightly connected by rubber o-ring by blind flange The crossing cabin hole at the center of plate 3 is sealed.The mounting plate 25 on the bottom of flange plate 3, tested in-line arrangement cryogenic liquid pump 26 is pacified In fixed plate 25, flexible bellow 27 is connected to the turnover of tested in-line arrangement cryogenic liquid pump 26 using VCR interfaces 14 On mouth.The power line of tested in-line arrangement cryogenic liquid pump 26 and each sensor pressure guiding pipe or electric signal lead are logical in flange plate 3 Cross crossing cabin on KF flange-interfaces.Wrapped multiple heat-insulating material (MLI) on the pipeline positioned at vacuum chamber afterwards, positioned at true Rubber and plastic cotton is coated on pipeline outside cavity, finally flange plate 3 is installed on vacuum (-tight) housing 4 and completes to seal.Fixed plate 25 is adopted It is that multiple holes are equipped with tetrafluoro material, plate, tested in-line arrangement cryogenic liquid pump 26 can be reduced to the leakage in top normal temperature region Heat.Operation when emptying and precooling before cryogenic liquid pump work prepare and worked is consistent with embodiment 1.
Preferable embodiment of the invention described in detail above.It should be appreciated that one of ordinary skill in the art Just many modifications and variations can be made according to the design of the present invention without creative work.Therefore, all skills in the art Art personnel can be obtained by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea Technical scheme, all should be in the protection domain being defined in the patent claims.

Claims (10)

1. a kind of small-sized cryogenic liquid pump lift Performance Test System of vacuum insulation protection, it is characterised in that including blind flange Plate, vacuum (-tight) housing, tested cryogenic liquid pump, vavuum pump, liquid nitrogen storage tank, open Dewar bottle, inlet ductwork and export pipeline, pressure are passed Sensor, temperature sensor, wherein,
The flange plate is tightly connected with the vacuum (-tight) housing and collectively forms vacuum chamber, and the flange plate is provided with and vacuumized Interface, the interface that vacuumizes is connected with the vavuum pump;
The tested cryogenic liquid pump suspension is installed on the flange plate, and in the vacuum chamber, the inlet tube Road and the export pipeline crossing cabin on the flange plate respectively, one end of the inlet ductwork connect the liquid nitrogen storage tank, The other end connects the tested cryogenic liquid pump by flexible transition tube, and the liquid nitrogen storage tank is used to be the tested cryogenic liquid Pump provides low-temperature test fluid;One end of the export pipeline connects the tested cryogenic liquid pump by flexible transition tube, separately One end connects the open Dewar bottle, and the open Dewar bottle receives the cryogenic liquid of tested cryogenic pump outflow;The inlet tube Road includes inlet tube, and the export pipeline includes outlet, and the inlet ductwork and export pipeline are constituted by cryogenic delivery pipe; The liquid nitrogen storage tank and the open Dewar bottle are respectively positioned on the outside of the vacuum chamber;
The pressure sensor be arranged to via capillary pressure guiding pipe on the flange plate after crossing cabin with the tested low temperature The inlet ductwork of liquid pump is connected with the export pipeline;The temperature sensor is inserted into by the way of cutting ferrule installation In the inlet ductwork and the export pipeline of the tested cryogenic liquid pump in vacuum cavity;Positioned at described true The export pipeline of cavity inside is provided with flowmeter, and quality meter is provided with below the open Dewar bottle.
2. the small-sized cryogenic liquid pump lift Performance Test System of vacuum insulation protection according to claim 1, its feature It is, the center position of the flange plate is provided with hole, and provided with O-ring conduit and pretension screw-threaded counterbore, in the O-ring Rubber o-ring is provided with conduit, the flange plate passes through the rubber o-ring, clip and vacuum (-tight) housing formation seal System.
3. the small-sized cryogenic liquid pump lift Performance Test System of vacuum insulation protection according to claim 1 or 2, it is special Levy and be, the tested cryogenic liquid pump is tested crossing cabin formula cryogenic liquid pump or tested in-line arrangement cryogenic liquid pump.
4. the small-sized cryogenic liquid pump lift Performance Test System of vacuum insulation protection according to claim 3, its feature Be, the flange plate by the adpting flange on the rubber o-ring and the tested crossing cabin formula cryogenic liquid pump or with It is hung with the blind plate sealing connection of the tested in-line arrangement cryogenic liquid pump.
5. the small-sized cryogenic liquid pump lift Performance Test System of vacuum insulation protection according to claim 1, its feature Be, 3 KF flange-interfaces be additionally provided with the flange plate, wherein, be used separately as it is described vacuumize interface, the pressure is passed The capillary pressure guiding pipe crossing cabin of sensor, the signal wire and motor power-supply wire crossing cabin passage of the temperature sensor.
6. the small-sized cryogenic liquid pump lift Performance Test System of vacuum insulation protection according to claim 1, its feature Be, the inlet ductwork and the export pipeline constitute Dewar tubular construction by inner tube and sleeve pipe, the bottom of described sleeve pipe with The flange plate connection, the clearance space between said inner tube and described sleeve pipe is communicated with the vacuum chamber.
7. the small-sized cryogenic liquid pump lift Performance Test System of vacuum insulation protection according to claim 4, its feature It is, the blind plate is connected by internal thread counterbore with fixed plate, collectively forms the outstanding of the tested in-line arrangement cryogenic liquid pump Hanging bracket, the tested in-line arrangement cryogenic liquid pump is suspended in the fixed plate.
8. the small-sized cryogenic liquid pump lift Performance Test System of vacuum insulation protection according to claim 1, its feature It is, including 2 flexible transition connecting tubes, wherein described in one one end and vacuum chamber of the flexible transition connecting tube Inlet tube is connected by cutting ferrule, and the other end is connected with the import of tested cryogenic liquid pump by VCR interfaces;The flexible transition connects The outlet in another one end and vacuum chamber of adapter is connected by cutting ferrule, the other end and tested cryogenic liquid pump Outlet is connected by VCR interfaces.
9. the small-sized cryogenic liquid pump lift Performance Test System of the vacuum insulation protection according to claim 1 or 8, it is special Levy and be, the flexible transition connecting tube is thin-wall corrugated tube.
10. the small-sized cryogenic liquid pump lift Performance Test System of vacuum insulation protection according to claim 1, its feature It is, multilayer insulant is enclosed with the inlet ductwork and the export pipeline positioned at the vacuum chamber.
CN201710353946.XA 2017-05-18 2017-05-18 The small-sized cryogenic liquid Pump Characteristic Test System of vacuum insulation protection Active CN107035675B (en)

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CN108331745A (en) * 2018-03-30 2018-07-27 江苏大学 A kind of high-temperature pump pilot system and test method
CN108593054A (en) * 2018-03-21 2018-09-28 中国科学院理化技术研究所 A kind of scaling method and device of cryogenic flow meter
CN113137379A (en) * 2021-04-06 2021-07-20 上海交通大学 Small skid-mounted closed loop testing device for evaluating comprehensive performance of cryogenic pump
CN113281376A (en) * 2021-04-22 2021-08-20 浙江大学 Device and method for measuring deep low-temperature heat leakage rate of material

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CN105044142A (en) * 2015-05-08 2015-11-11 上海交通大学 Wide-temperature-zone controllable material thermophysical property measurement system
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CN103758744A (en) * 2014-02-24 2014-04-30 大连深蓝泵业有限公司 Novel cryogenic pump test stand
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Cited By (4)

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Publication number Priority date Publication date Assignee Title
CN108593054A (en) * 2018-03-21 2018-09-28 中国科学院理化技术研究所 A kind of scaling method and device of cryogenic flow meter
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CN113137379A (en) * 2021-04-06 2021-07-20 上海交通大学 Small skid-mounted closed loop testing device for evaluating comprehensive performance of cryogenic pump
CN113281376A (en) * 2021-04-22 2021-08-20 浙江大学 Device and method for measuring deep low-temperature heat leakage rate of material

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