CN104879583B - Self-sealed low-temperature fluid visualization unit - Google Patents
Self-sealed low-temperature fluid visualization unit Download PDFInfo
- Publication number
- CN104879583B CN104879583B CN201510136432.XA CN201510136432A CN104879583B CN 104879583 B CN104879583 B CN 104879583B CN 201510136432 A CN201510136432 A CN 201510136432A CN 104879583 B CN104879583 B CN 104879583B
- Authority
- CN
- China
- Prior art keywords
- tube
- transparent
- drain pipe
- section
- feed tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
- F16L25/0072—Joints for pipes of dissimilar materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
Abstract
The invention discloses a self-sealed low-temperature fluid visualization unit comprising a liquid incoming tube, a transparent tube and a liquid outgoing tube connected in order. The liquid incoming tube and the liquid outgoing tube are inserted into the transparent tube and are in clearance fit with the transparent tube. The coefficient of thermal expansion of the transparent tube is higher than that of the liquid incoming tube and of the liquid outgoing tube. At low temperature, the transparent tube shrinks and tightly fits the liquid incoming tube and the liquid outgoing tube. The transparent tube is convenient to connect with other lines; under the action of low-temperature fluid, self-sealing is allowed; an insulation tube is arranged outside the transparent tube; a vacuum insulating layer is provided between the transparent tube and the insulation tube. The self-sealed low-temperature fluid visualization unit features low heat leakage, simple structure and the like and allows convenience for the observation and study of cavitation and the like of the low-temperature fluid.
Description
Technical field
The present invention relates to technical field of aerospace and refrigeration cryogenic engineering, particularly relate to a kind of self sealss
Cryogen visualization device.
Background technology
Be considered as the ideal fuels of rocket launching at aerospace field, liquid oxygen and liquid hydrogen, but its
In mechanical part during flowing, it is reduced to be near or below corresponding the satisfying of temperature due to pressure in some region
Vaporize, referred to as cavitation phenomenons with pressure.
Venturi tube has outlet pressure to be changed within the specific limits, the feature that fluid flow is almost unchanged,
Thus in high-thrust rocket system, for accurately controlling liquid hydrogen/oxygen flow.At Venturi tube
Throat, fluid produces cavitation phenomenons owing to static pressure is less than saturation pressure corresponding to temperature.Vapour with water
Erosion process is different, and the liquid/vapor density of cryogen is less than the liquid/vapor density ratio relative to water
About two orders of magnitude so that " heat effect " that latent heat of phase change causes can not be ignored.Therefore, cryogen
Cavitation characteristics there is more complicated mechanism so that be originally used for room temperature flow venturi flow rate calculation
Bernoulli Jacob (Bernoulli) equation calculate cryogen (such as liquid hydrogen/oxygen) venturi meter
Bigger error is produced during calculation.
Therefore, in order to reduce actual flow and the error of calculated flow rate in rocket engine flight course,
Have to be understood that the cavitation characteristics of cryogen in Venturi tube and the impact on flow thereof.It addition, low temperature stream
The existence of body cavitation phenomenons is not only relevant to the runnability of rocket engine and safety, is accompanied by
Such as the significantly negative effect such as noise, vibration and surface breakdown.Deep understanding to cryogenic liquid cavitation
The optimization being conducive to spacecraft propulsion system with Accurate Prediction designs.
The Chinese patent literature of Application No. 201110359836.7 discloses one and is applicable to water pump examination
Testing platform and carry out the cavitation pot of parallel water pump, this device focuses on the test of steam erosion, the most effectively
Insulation, be not suitable for cryogenic liquid cavitation test.
The Chinese patent literature of Application No. 201110041273.7 discloses a kind of research anti-vapour of coating
The experimental provision of erosion performance, in airtight casing, has drop and the high-speed rotary of High Temperature High Pressure character
The sample turned clashes into, and simulates cavitation of blade phenomenon.But this device is not related to the survey of cryogenic liquid cavitation
Examination.
The U.S. looks into low temperature bayonet joint (the Dissimilar metal that special industrial group (MVE) produces
Bayonet) transmission of cryogenic liquid can be carried out under the least leakage heat, and can disassemble easily,
But its conveying pertaining only to cryogenic liquid does not have the test of cryogen cavitation and the effect of observation.
Owing to cryogenic liquid (such as liquid nitrogen/liquid hydrogen) temperature is often below 120K, its corresponding cavitation is surveyed
Electricity testing device should have good insulated design, to avoid the Lou heat impact on cavitation, Normal Atmospheric Temperature Liquid (as
Water) cavitation test device the most can not meet the requirement of this respect；Meanwhile, cavitation experiment needs
Regularly change experimental part, especially cavitation parts, at cavitation nearby components to adiabatic requirement
Higher than other parts again, so needing to design a kind of low temperature being easy to disconnect and have good thermo-insulation properties
Fluid cavitation parts so that it is can be efficiently and quickly with other structure assemblies that low temperature test device is carried out
The observation of cryogen cavitation phenomenons and research.
Summary of the invention
The invention provides a kind of self sealss cryogen visualization device, it carries out cryogen experiment
Pipeline heat insulation with the external world, and this device can be with automatic-sealed after being connected with other pipelines.
The present invention solves the technical scheme of problem:
A kind of self sealss cryogen visualization device, including the feed tube being sequentially connected with, transparent tube and
Drain pipe, described feed tube and drain pipe are plugged in transparent tube and transparent tube matched in clearance respectively；Institute
The thermal coefficient of expansion stating transparent tube is more than feed tube and the thermal coefficient of expansion of drain pipe, described under low temperature
Bright pipe shrinks and closely cooperates with feed tube and drain pipe.
The principle of the present invention is, according to the difference of two kinds of different materials thermal coefficient of expansions at the same temperature
Different, tubing high for thermal coefficient of expansion is set in the low tubing of thermal coefficient of expansion peripheral, thermal coefficient of expansion
The tubing that high tubing shrinkage factor is little more than thermal coefficient of expansion, so when low temperature between two kinds of tubing
Gap eliminates, and can reach self-packing purpose.The self sealss cryogen visualization device of the present invention
Solve transparent tube and be connected the problems such as inconvenience, poor sealing with other pipelines.
The gap of described transparent tube and feed tube and drain pipe and transparent tube, feed tube and the material of drain pipe
Material is relevant, also relevant to the temperature of cryogen during experiment.But to raising sealing, gap is most
Measuring little, transparent tube is the biggest with feed tube and drain pipe difference on thermal coefficient of expansion.
As preferably, the material of described transparent tube is lucite, described feed tube and the material of drain pipe
Material is metal.
Described transparent tube can be the one in multiple cryogen visualized experiment pipe, as preferably,
Described transparent tube is transparent cavitating venturi, has cryogen can be made to produce cavitation in described transparent cavitating venturi
Tested media passage.Described medium channel is on same axis with feed tube and drain pipe.
On-the-spot for the ease of described visualization device is used for observing the cavitation of liquid nitrogen or liquid hydrogen, it is passed through
Can realize self sealss when liquid nitrogen or liquid hydrogen, as preferably, described low temperature refers to that temperature is 0～230K.
In order to increase the sealing between transparent tube and feed tube and drain pipe further, it is preferable that institute
State transparent tube and be all filled with stop-leak compound in the gap of feed tube and drain pipe.
For the ease of controlling feed tube and the insertion depth of drain pipe, as preferably, described feed tube and
The outer wall of drain pipe is provided with the spacing ring of the end abutment with transparent tube.Described spacing ring respectively with feed liquor
Pipe and drain pipe insert transparent tube part and form semi-surrounding structure, further enhancing feed tube and go out liquid
Pipe and the sealing of transparent tube.
In order to described transparent tube, feed tube and drain pipe are thermally shielded, it is preferable that described transparent tube,
The periphery of feed tube and drain pipe respectively by connector be fixed with the first instlated tubular, the second instlated tubular and
3rd instlated tubular, the two ends of each instlated tubular are equipped with flange.Self sealss low temperature under this technical scheme
Fluid visibility gasifying device is the most heat insulation good, it is often more important that easy accessibility, it is simple to change transparent tube.
As preferably, described second instlated tubular is lucite tube, saturating through the second instlated tubular observable
Cavitation in bright pipe or other phenomenons, therefore described glass tubing is called form.Lucite is easy to arrange
Flange.
Described feed tube and the second instlated tubular constitute a union joint, it is simple to be connected with other pipelines and
Fixing；Same, described drain pipe and the 3rd instlated tubular also constitute a union joint.
Between transparent tube and the first instlated tubular, between feed tube and the second instlated tubular, and drain pipe with
It is vacuum chamber between 3rd instlated tubular, can also interconnect mutually independently of one another between each vacuum chamber
Logical.The most preferably these vacuum chambers are connected as an entirety, it is simple to evacuation.
Fixed by connector between described feed tube and drain pipe and respective instlated tubular, to keep
State and maintain a certain distance between feed tube and drain pipe and respective instlated tubular.Transparent in order to reduce
Pipe, conduction of heat between feed tube and drain pipe and respective instlated tubular, the material of described connector is excellent
Elect fiberglass as, because the thermal conductivity of fiberglass is the lowest.
Not using connector to fix between described transparent tube and the second instlated tubular, described transparent tube is logical
Cross and be plugged on the feed tube at its two ends and drain pipe is fixed.This fixed form beneficially transparent tube, enter
Liquid pipe and the alignment of drain pipe, reduce the replacing of the difficulty of processing of device, beneficially transparent tube.
As preferably, described feed tube and drain pipe are respectively provided with towards away from the increase of transparent tube orient diameter
Extension diameter section, and be connected to first isometrical section of extension diameter section closing in end and be connected to extension diameter section flared end
Second isometrical section.
Described 3rd instlated tubular wherein one section be corrugated tube, its of first isometrical section of described drain pipe
In one section be corrugated tube.
As preferably, described feed tube and drain pipe have transfusion away from the equal Flange joint in one end of transparent tube
Managing, the end of described tube for transfusion stretches into second isometrical section, the outer wall of described tube for transfusion and second isometrical section
Closely cooperate.
As preferably, described tube for transfusion is the bimetallic tube including inner and outer tubes, between inner and outer tubes
For vacuum heat-insulating layer, the internal diameter of the internal diameter of described tube for transfusion and first isometrical section is equal.Described tube for transfusion
Internal layer and outer layer between be vacuum chamber, the most heat insulation.The internal diameter of described tube for transfusion and first isometrical
The internal diameter of section is equal is in order to avoid caliber change affects the observation of cavitation phenomenons in transparent tube.
The beneficial effects of the present invention is: transparent tube is easy to connect with other pipelines, and at low temperature stream
It is capable of self sealss under the variations in temperature that body guides；The periphery of transparent tube is provided with instlated tubular, transparent tube
And it is vacuum heat-insulating layer between instlated tubular, there is features such as leaking hot little, simple in construction, it is simple to low temperature stream
The observation of the phenomenons such as the cavitation of body and research.
Accompanying drawing explanation
Fig. 1 is the internal structure schematic diagram of the self sealss cryogen visualization device of the present invention.
Fig. 2 is the axonometric chart of the self sealss cryogen visualization device of the present invention.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described.The noun of locality of the present invention
"left", "right" is on the basis of accompanying drawing 1, " left " and " right ", and " first ", " second "
The use of " the 3rd " does not limit the present invention, only for the purposes of describing and distinguishing.
Heretofore described transparent tube can be in the pipeline of numerous observation and research cryogen
One, is described in detail below as a example by the transparent cavitating venturi of research cryogen cavitation phenomenons.
As it is shown in figure 1, a kind of self sealss cryogen visualization device, including the feed liquor being sequentially connected with
Pipe 1, transparent cavitating venturi 2 and drain pipe 3.The cryogens such as liquid nitrogen flow into transparent vapour from feed tube 1
Erosion pipe 2 is interior and cavitation phenomenons occurs, and finally flows out from drain pipe 3.
The middle part of transparent cavitating venturi 2 has tested media passage 21, and cryogen flows through medium channel
Cavitation is there is when 21.Transparent cavitating venturi 2 is lucite tube.
Feed tube 1 is divided into first isometrical section 11, extension diameter section 12 and second isometrical section 13.First is isometrical
The diameter of section 11 is less than second isometrical section 13.The diameter of extension diameter section 12 is along away from transparent cavitating venturi 2
Direction uniformly increase.Be plugged on for first isometrical section 11 transparent cavitating venturi 2 left end 22 and with thoroughly
Bright cavitating venturi 2 matched in clearance.Being additionally provided with spacing ring 14 on first isometrical section 11, spacing ring 14 is with saturating
The left side of bright cavitating venturi 2 abuts.
Drain pipe 3 is divided into first isometrical section 31, extension diameter section 32 and second isometrical section 33.First is isometrical
The diameter of section 31 is less than second isometrical section 33.The diameter of extension diameter section 32 is along away from transparent cavitating venturi 2
Direction uniformly increase.Be plugged on for first isometrical section 31 transparent cavitating venturi 2 right-hand member 23 and with thoroughly
Bright cavitating venturi 2 matched in clearance.Being additionally provided with spacing ring 34 on first isometrical section 31, spacing ring 34 is with saturating
The right side of bright cavitating venturi 2 abuts.
The material of transparent cavitating venturi 2 is lucite, and the material of feed tube 1 and drain pipe 3 is not
Rust steel, the thermal coefficient of expansion of transparent cavitating venturi 2 is more than feed tube 1 and drain pipe 3, reduces identical
During temperature, the amount of contraction of transparent cavitating venturi 2 is more than feed tube 1 and drain pipe 3.During room temperature (25 DEG C),
It is respectively provided with certain interval, it is simple to dismounting between transparent cavitating venturi 2 and feed tube 1 and drain pipe 3；Low
During temperature (such as-190 DEG C), transparent cavitating venturi 2 is closely wrapped in feed tube 1 and drain pipe 3
Outer wall.And when the temperature increases, transparent cavitating venturi 2 can separate with feed tube 1 and drain pipe 3 again.
The change of temperature recited above, from cryogen, is namely carrying out cryogen cavitation experiment
Time, adding cryogen, transparent cavitating venturi 2 realizes self sealss with feed tube 1 and drain pipe 3, when
After experiment terminates, transparent cavitating venturi 2 feed tube 1 and drain pipe 3 realize automatically unclamping.
Otherwise see-through cavitating venturi 2 is filled with stop-leak compound with the gap of feed tube 1 and drain pipe 3, permissible
Increase sealing further.Spacing ring 14 and spacing ring 34 also have increases the effect of sealing.
The insulation of cryogen cavitation experiment is extremely important.
The periphery of feed tube 1 is provided with the first instlated tubular 15, and feed tube 1 and the first instlated tubular 15 pass through
Connecting rod 16 connects, and is vacuum chamber 17 between feed tube 1 and the first instlated tubular 15.In like manner, transparent
The periphery of cavitating venturi 2 is provided with the second instlated tubular 24.The periphery of drain pipe 3 is provided with the 3rd instlated tubular 35,
Drain pipe 3 and the 3rd instlated tubular 35 are connected by connecting rod 36, drain pipe 3 and the 3rd instlated tubular 35
Between be vacuum chamber 37.The material of connecting rod 16 and connecting rod 36 is fiberglass, fiberglass heat conduction system
Number is little, can reduce the heat transfer of feed tube or drain pipe and instlated tubular.
A vacuum chamber 25 is had between transparent cavitating venturi 2 and the second instlated tubular 24, but transparent cavitating venturi 2
Not linking into an integrated entity with the second instlated tubular 24, transparent cavitating venturi 2 relies on feed tube 1 and goes out liquid
Pipe 3 is fixed.The purpose so arranged is, when changing transparent cavitating venturi 2, it is not necessary to by transparent cavitation
Pipe 2 is changed together with the second instlated tubular 24, can improve the convenience changing transparent cavitating venturi 2.
The two ends of first instlated tubular the 15, second instlated tubular 24 and the 3rd instlated tubular 35 are equipped with flange.
First instlated tubular the 15, second instlated tubular 24 and the 3rd instlated tubular 35 pass sequentially through Flange joint.Feed liquor
Pipe 1 and the first instlated tubular 15 constitute a union joint a, and drain pipe 3 and the 3rd instlated tubular 35 are also
Constitute a union joint b.The material of the second instlated tubular 24 is lucite, transparent cavitating venturi 2
Visualization element c is constituted with the second instlated tubular 24.When union joint a and union joint b and visualization element
After c connects, vacuum chamber 17, vacuum chamber 25 and vacuum chamber 37 are communicated as one.As in figure 2 it is shown,
First instlated tubular 15 is provided with the evacuation interface 18 connected with vacuum chamber 17, on the 3rd instlated tubular 35
It is provided with the vacuum feedthroughs joint 38 connected with vacuum chamber 37.
When cryogen flows through each pipeline, owing to temperature drastically reduces, the contraction of pipeline can be caused,
Primary concern is that the radial contraction of pipeline during self sealss discussed above, pipeline there is also along pipeline simultaneously
Axial contraction, pipeline sealing is impacted by the contraction axial in order to avoid pipeline, needs at pipe
Arranging one section in road can be with the corrugated tube of axial stretching.In order to avoid cavitation experiment is caused negative shadow
Ringing, corrugated tube should be arranged on the liquid outlet of transparent cavitating venturi 2, in the present embodiment, respectively first
Isometrical section 31 and the 3rd instlated tubular 35 are provided with corrugated tube 39.
As it is shown in figure 1, union joint a and union joint b connects respectively away from one end of visualization element c
There are tube for transfusion 4 and tube for transfusion 5.The outer wall of tube for transfusion 4 is provided with flange 41, and the end of tube for transfusion 4 is stretched
Enter in second isometrical section 13, and the end of tube for transfusion 4 has oblique with what the second extension diameter section 12 coordinated
Face 42, inclined-plane 42 is arranged with sealing ring (not shown), as tube for transfusion 4 and union joint a
During by Flange joint, sealing ring is compressed between inclined-plane 42 and the second extension diameter section 12 and reaches to seal
Purpose.For the ease of dismounting, between having between the outer wall of tube for transfusion 4 and second isometrical section 13 necessarily
Gap, but when tube for transfusion 4 stretches into the long enough of second isometrical section 13 so that leaked by this gap
The probability of heat is the least.Tube for transfusion 4 is double-decker, including inner and outer tubes, inner and outer tubes it
Between be vacuum heat-insulating layer, wherein the internal diameter of inner tube is equal with the internal diameter of tube for transfusion 1.Tube for transfusion 4 and defeated
Liquid pipe 5 has identical structure, so being no longer described the structure of tube for transfusion 5.
Transparent cavitating venturi 2, feed tube 1 and drain pipe 3 are in same level, and each pipeline
Dead in line.By the second instlated tubular 24 transparent cavitating venturi of observable 2 being made up of lucite
The cavitation phenomenons that middle fluid occurs.Owing to the periphery of transparent cavitating venturi 2 is vacuum chamber, extraneous temperature
Fluid cavitation in transparent cavitating venturi 2 will not be produced impact.When needing to change transparent cavitating venturi 2,
Have only to treat that unit temp recovers room temperature (or rising to uniform temperature, such as 0 DEG C), heat insulation by second
The bolt of the flange on the left of pipe 24 or right side unloads, from left side or the right side of the second instlated tubular 24
Transparent cavitating venturi 2 is extracted out and is replaced.
The self sealss cryogen visualization device of the present invention can from different liquid-supplying system (as liquid nitrogen,
Liquid oxygen, liquid helium etc.) couple, the scope of application is big, simple in construction.Simultaneously as self sealss are low
Do not install valve additional on the fluid circuit of temperature fluid visibility gasifying device, fluid can be avoided to flow through valve and produce
Cavitation on the impact of fluid cavitation in transparent cavitating venturi 2.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for
For those skilled in the art, the present invention can have various modifications and variations.All essences in the present invention
Within god and principle, any modification, equivalent substitution and improvement etc. made, should be included in the present invention
Protection domain within.
Claims (5)
1. a self sealss cryogen visualization device, including the feed tube being sequentially connected with, transparent
Pipe and drain pipe, it is characterised in that described feed tube and drain pipe are plugged in transparent tube and transparent tube
Matched in clearance；The thermal coefficient of expansion of described transparent tube is more than feed tube and the thermal coefficient of expansion of drain pipe,
Under low temperature, described transparent tube is shunk and closely cooperates with feed tube and drain pipe；
It is heat insulation that the periphery of described transparent tube, feed tube and drain pipe is fixed with first by connector respectively
Pipe, the second instlated tubular and the 3rd instlated tubular, the two ends of each instlated tubular are equipped with flange；
Described feed tube and drain pipe are respectively provided with the extension diameter section that court increases away from transparent tube orient diameter, with
And be connected to first isometrical section of extension diameter section closing in end and be connected to the second isometrical of extension diameter section flared end
Section；
Described 3rd instlated tubular wherein one section be corrugated tube, its of first isometrical section of described drain pipe
In one section be corrugated tube；
Described feed tube and drain pipe have tube for transfusion away from the equal Flange joint in one end of transparent tube, described defeated
The end of liquid pipe stretches into second isometrical section, and the outer wall of described tube for transfusion and second isometrical section closely cooperate；
Described tube for transfusion is the bimetallic tube including inner and outer tubes, is vacuum heat-insulation between inner and outer tubes
Layer, the internal diameter of the internal diameter of described tube for transfusion and first isometrical section is equal.
2. self sealss cryogen visualization device as claimed in claim 1, it is characterised in that
The material of described transparent tube is lucite, and the material of described feed tube and drain pipe is metal.
3. self sealss cryogen visualization device as claimed in claim 1, it is characterised in that
Described low temperature refers to that temperature is 0～230K.
4. self sealss cryogen visualization device as claimed in claim 1, it is characterised in that
Described transparent tube is all filled with stop-leak compound in the gap of feed tube and drain pipe.
5. self sealss cryogen visualization device as claimed in claim 1, it is characterised in that
The outer wall of described feed tube and drain pipe is provided with the spacing ring of the end abutment with transparent tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510136432.XA CN104879583B (en) | 2015-03-26 | 2015-03-26 | Self-sealed low-temperature fluid visualization unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510136432.XA CN104879583B (en) | 2015-03-26 | 2015-03-26 | Self-sealed low-temperature fluid visualization unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104879583A CN104879583A (en) | 2015-09-02 |
| CN104879583B true CN104879583B (en) | 2017-01-11 |
Family
ID=53947191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510136432.XA Expired - Fee Related CN104879583B (en) | 2015-03-26 | 2015-03-26 | Self-sealed low-temperature fluid visualization unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104879583B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105299439B (en) * | 2015-09-16 | 2018-06-19 | 浙江大学 | Detachable low-temperature flow shear stress form, device and container |
| CN106053015A (en) * | 2016-06-01 | 2016-10-26 | 北京理工大学 | Detachable cryogenic liquid cavitation flow observational test section |
| CN106567971A (en) * | 2016-11-04 | 2017-04-19 | 重庆兴宝兴玻璃制品有限公司 | High-temperature fluid observation device |
| CN112730505B (en) * | 2020-12-18 | 2022-05-17 | 上海交通大学 | Visual experiment chamber for throttling and quantitative measurement of cryogenic fluid |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3549780A (en) * | 1969-01-15 | 1970-12-22 | Simplex Wire & Cable Co | Contraction joint |
| NL6903512A (en) * | 1969-03-07 | 1970-09-09 | ||
| US5988225A (en) * | 1994-04-15 | 1999-11-23 | The Boeing Company | Superplastic tubular part |
| CN201651676U (en) * | 2010-01-06 | 2010-11-24 | 王炼 | Improved vacuum low-temperature heat insulation tube |
| CN202215193U (en) * | 2010-10-21 | 2012-05-09 | 河北宝石特种柔性胶化有限公司 | Water-swelling self-sealing type packer |
| CN203468548U (en) * | 2013-07-22 | 2014-03-12 | 德昌电机(深圳)有限公司 | Connecting pipe, and water dredging equipment and dishwasher using same |
-
2015
- 2015-03-26 CN CN201510136432.XA patent/CN104879583B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104879583A (en) | 2015-09-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104879583B (en) | Self-sealed low-temperature fluid visualization unit | |
| Al-Ansary et al. | Numerical study of conduction and convection heat losses from a half-insulated air-filled annulus of the receiver of a parabolic trough collector | |
| Wang et al. | Experimental investigation in the local heat transfer of supercritical carbon dioxide in the uniformly heated horizontal miniature tubes | |
| CN103728193A (en) | Visual minitype fluid cavitation testing device | |
| CN107035675B (en) | The small-sized cryogenic liquid Pump Characteristic Test System of vacuum insulation protection | |
| CN104913971A (en) | Hopkinson rod low-temperature experiment device | |
| Yoo et al. | Experimental study of propane condensation heat transfer and pressure drop in semicircular channel printed circuit heat exchanger | |
| Wang et al. | Experimental study on fast quenching of cryogenic LN2 flow through interior micro-fin tube | |
| CN106247065A (en) | A kind of compensate the structure of cryogenic piping temperature stress in vacuum chamber | |
| CN203337469U (en) | Cryostat for cryogenic pressure pipeline test | |
| Li et al. | Experimental investigation on pressure drop and friction factor of slush nitrogen turbulent flow in helically corrugated pipes | |
| CN104089180B (en) | A kind of new liquid gasification installation and method of work | |
| CN104089928B (en) | A kind of cryogen visualizing monitor device based on laser interferance method | |
| CN105299439A (en) | Detachable low-temperature fluid visualization window, device and container | |
| CN109655131A (en) | A kind of low-temperature (low temperature) vessel differential pressure type level gauge liquid phase pipeline experimental system visualizing | |
| Mao et al. | Investigation on the elimination of geyser in a cryogenic pipe by a recirculation method | |
| Ho et al. | Nozzle injection displacement mixing in a zero boil-off hydrogen storage tank | |
| CN204592716U (en) | A kind of vacuum tube structure | |
| CN112730505B (en) | Visual experiment chamber for throttling and quantitative measurement of cryogenic fluid | |
| CN203163582U (en) | Improved tube type heat exchanger tube box | |
| CN107489858A (en) | The hot On Tranofer Tube For Liquid Helium of low drain | |
| Zhang et al. | Experimental investigation of flow boiling heat transfer boundary of nitrogen in 1.2 mm vertical mini-channel | |
| CN203981584U (en) | A kind of cryogen visualizing monitor device based on laser interferance method | |
| CN110440076A (en) | A kind of small vacuum and low temperature multi-pass pipe and preparation method thereof | |
| Huang et al. | Design and test of vacuum system for 40 T hybrid magnet superconducting outsert of China |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170111 Termination date: 20180326 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |