CN208254004U - A kind of liquid nitrogen circulating cooling vortex tube high-efficiency refrigerating system - Google Patents
A kind of liquid nitrogen circulating cooling vortex tube high-efficiency refrigerating system Download PDFInfo
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- CN208254004U CN208254004U CN201820515099.2U CN201820515099U CN208254004U CN 208254004 U CN208254004 U CN 208254004U CN 201820515099 U CN201820515099 U CN 201820515099U CN 208254004 U CN208254004 U CN 208254004U
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Abstract
The utility model discloses a kind of liquid nitrogen circulating cooling vortex tube high-efficiency refrigerating systems, it solves the problems, such as swirl control refrigeration technique, and there are rate of heat dissipation and refrigerating efficiency are low, it uses liquid nitrogen circulation to cool down vortex tube heat pipe, realization effectively improves the rate of heat dissipation of vortex tube and the purpose of refrigerating efficiency, its technical solution are as follows: including vortex pipe refrigeration system and liquid nitrogen cooling system, the vortex pipe refrigeration system includes the air inlet sleeve with nozzle, air inlet sleeve one end socket cold end pipe is simultaneously sealed by seal sleeve, other end socket end tube is simultaneously sealed by gasket seal, cold end pipe, air inlet sleeve and end tube form minor air cell；The end tube is equipped with rectifier far from one end inside of air inlet sleeve；The liquid nitrogen refrigerating system includes the spiral liquid nitrogen cooling pipe being wound in outside end tube, and spiral liquid nitrogen cooling pipe circulation conveying liquid nitrogen cools down end tube.
Description
Technical field
The utility model relates to vortex tube refrigeration technical fields, efficient more particularly to a kind of liquid nitrogen circulating cooling vortex tube
Refrigeration system.
Background technique
Vortex tube is a kind of simple energy separation device of structure, by nozzle, minor air cell, cold end pipe, end tube and gas
Five core compositions of body control valve.It is vortexed separation principle using energy, compressed gas is passed through by when work by admission line
Nozzle of vortex tube, unexpected increase and pressure difference due to space, after gas expansion acceleration along a tangential direction with high speed
Into minor air cell, air-flow forms high speed in minor air cell and is vortexed, due to the pressure difference between gas control valve and cold end pore plate,
Central area in vortex tube forms reflux gas, is separated into the unequal two parts air-flow of total temperature after vortex transformation.
Wherein, the forced vortex reflux airflow temperature in centre reduces to form low-temperature airflow and be excluded by cold end pipe side, and
Free vortex gas flow temperature in outer layer position increases to form thermal current, adjusts and is discharged through gas control valve from end tube.Room temperature
Compressed air forms cold and hot two strands of air-flows by the energy vortex separation of vortex tube and is discharged respectively from vortex tube two sides, and here it is institutes
" eddy current effect " of meaning or " blue gram effect ".
Zhang Chuntang etc. devises a kind of vortex tube refrigerator, the main whirlpool that vortex generator is connected by one end with cold end pipe
Flow-generator is formed with the auxiliary vortex generator two parts for being socketed in the main vortex generator other end, is then connected with end tube
It connects.The gas cyclone into main vortex generator is set to be enhanced and be changed cyclone angle by increasing auxiliary vortex generator,
Increase the pressure difference of hot and cold air inside vortex tube to enhance energy separation efficiency, reaches enhancing cooling effect and improve coefficient of refrigerating performance
Target.
Liu state of Qingdao Technological University great waves etc. devise a kind of superonic flow nozzzle vortex tube refrigeration and nano-fluid micro lubricating
Feed system is coupled, the cryogenic gas generation device of the system uses superonic flow nozzzle, by improving nozzle of vortex tube outlet speed
Degree, by nozzle of vortex tube runner set different streamline line styles improve gas at nozzle of vortex tube voorticity, to vortex
Pipe heat pipe improves the energy separation degree of vortex tube using measures such as enhanced heat exchanges, reaches the mesh for effectively improving refrigerating efficiency
's.
The Yuan Songmei etc. of BJ University of Aeronautics & Astronautics devises a kind of retractable archimedes type line vortex tube nozzle, spray
Mouth includes air intake, nozzle exterior runner, runner baffle, nozzle flow channel, nozzle vortex room and outer surrounding baffle, and nozzle flow channel uses
The design of contraction type Archimedes's molded line, and use double-layer channel and design.Both rotation speed of the air in minor air cell can have been increased
Degree, to promote the heat exchange efficiency of ectonexine gas in minor air cell, and can be to avoid using the flow of single air intake compressed air
The case where being unevenly distributed at each nozzle flow channel with pressure is finally reached the purpose for improving refrigerating efficiency.
Horse weight virtue of Beijing University of Technology etc. devises a kind of nozzle of vortex tube, and the runner of nozzle uses geometrical axis pair
Claim, the pneumatic upper central axis along nozzle flow channel by the design method of equal ma grads so that air-flow along air-flow axial velocity for etc.
Mach gradient increases, and gas flow loss reduces；Before nozzle air inlet runner and nozzle flow channel in the same plane, along middle line etc.
Gas flow rate design, i.e. speed on the normal plane of holding air inlet runner center line are consistent with vortex tube inlet velocity.On the one hand
The cryogenic temperature effect of vortex tube can be improved, while cold flow when vortex tube reaches maximum cryogenic temperature effect can be improved
Rate, to improve the specific refrigerating effect and coefficient of refrigerating performance of vortex tube.
Harbin Engineering University's Song Fu member etc. devises a kind of novel vortex tube refrigerating device, including vortex house, heat
End pipe, thermal valve, packet chamber seat and packet chamber lid, packet chamber lid cover on packet chamber seat, and vortex house includes minor air cell and gland, minor air cell
Quantity be no less than three, vortex house, which is mounted on, in packet chamber seat and to be vortexed one end of house and is connected with packet chamber lid, hot end
Pipe is mounted in packet chamber lid, and thermal valve is mounted on one end of end tube.It can satisfy the practical needs to cold end flow and temperature, knot
Structure size is smaller, improves refrigeration flow to a certain extent.
To sum up, in existing swirl control refrigeration technique, simple, easy maintenance, failure rate be low with its structure for vortex tube, nothing
The advantages such as electric energy, mechanical energy and chemical energy are needed to be used widely, however it is always vortex tube research field that refrigerating efficiency is low
Problem, while the heat dissipation of heat pipe internal heating air is difficult also has certain restriction to the energy separation effect of vortex tube, therefore how
Designing a kind of vortex pipe refrigeration system that can be effectively improved rate of heat dissipation and effectively improve refrigerating efficiency is those skilled in the art
Primary study content.
Utility model content
In order to overcome the above-mentioned deficiencies of the prior art, it is efficient to provide a kind of liquid nitrogen circulating cooling vortex tube for the utility model
Refrigeration system uses liquid nitrogen circulation to cool down vortex tube heat pipe, realizes the rate of heat dissipation and refrigeration for effectively improving vortex tube
The purpose of efficiency；
Further, the utility model adopts the following technical solutions:
A kind of liquid nitrogen circulating cooling vortex tube high-efficiency refrigerating system, including vortex pipe refrigeration system and liquid nitrogen cooling system,
The vortex pipe refrigeration system includes the air inlet sleeve with nozzle, and air inlet sleeve one end socket cold end pipe is simultaneously close by seal sleeve
Envelope, other end socket end tube are simultaneously sealed by gasket seal, and cold end pipe, air inlet sleeve and end tube form minor air cell；The heat
End pipe is equipped with rectifier far from one end inside of air inlet sleeve；
The liquid nitrogen refrigerating system includes the spiral liquid nitrogen cooling pipe being wound in outside end tube, spiral liquid nitrogen cooling tube
Road circulation conveying liquid nitrogen cools down end tube.
Further, the cold end pipe includes cold end pipe disk, and runner protrusion, cold end Guan Yuan is arranged in cold end pipe disk one end
Cold side conduits are arranged in the disk other end.
Further, a plurality of arced flow path slot is arranged around center in the runner protrusion.
Further, the shape of the arced flow path slot can be double Archimedes's variable diameter helical line style types, Archimedes-
Any one in parabola line style, Archimedes-circular arc line style.
Further, the channel of the setting of cold end pipe disc centre the connection cold side conduits and runner protrusion.
Further, the cold side conduits include sequentially connected first straight pipe, diffuser and the second straight pipe, described
First straight pipe is connect with cold end pipe disk；The first inside diameter of straight pipe section size is described less than the second inside diameter of straight pipe section size
The internal diameter of diffuser with the first straight pipe junction to the second straight pipe junction gradual change by increasing.
Further, the end tube includes end tube disk, and end tube disk one end is connect with hot side conduit；The heat
The channel that setting is connected to hot side conduit in the middle part of end pipe disk；The hot side conduit includes that the taper connecting with end tube disk expands
Section is opened, cone expansion section is connect with cylinder straight pipe；The cone expansion section internal diameter by with end tube disk junction extremely
Increase with the junction gradual change of cylinder straight pipe.
Further, the end tube and the docking setting of cold end pipe, it is convex that the nozzle of air inlet sleeve is set to cold end pipe runner
At rising.
Further, the nozzle is the tangential nozzle of double diameter-changeable or involute reducing nozzle.
Further, the tangential nozzle of the double diameter-changeable includes two with the centrosymmetric nozzle body of air inlet sleeve, nozzle body
With the tangent connection of air inlet sleeve, the internal diameter of nozzle body with air inlet sleeve connecting pin to suspension end gradual change by increasing.
Further, the involute reducing nozzle includes the nozzle body connecting with air inlet sleeve, and the shape of nozzle body is
Involute, nozzle body internal diameter with air inlet sleeve connecting pin to suspension end gradual change by increasing.
Further, the gasotron includes cylindrical sleeves, and cylindrical sleeves are sheathed on inside end tube, the cylinder
Multiple equally distributed straightener(stator) blades are arranged in sleeve lining.
Further, the gap between the straightener(stator) blade being oppositely arranged be gradually decrease to it is minimum be then gradually increased to
It is maximum；The gap between straightener(stator) blade being oppositely arranged is consistently greater than 0.
It is then gradually increased alternatively, the gap between the straightener(stator) blade being oppositely arranged is gradually decrease to 0 to maximum.
Further, hot end regulating valve, the hot end regulating valve packet is arranged far from one end of air inlet sleeve in the end tube
The gas control valve valve body being sheathed on outside end tube is included, gas control valve spool is arranged in gas control valve body wall.
Further, the liquid nitrogen refrigerating system further includes liquid nitrogen circulating pump, and liquid nitrogen circulating pump passes through vortex tube inlet tube
Road is connected to spiral liquid nitrogen cooling pipe one end, and the spiral liquid nitrogen cooling pipe other end transports reflux line and liquid nitrogen by liquid nitrogen
Slot connection, liquid nitrogen tank are connected to by liquid nitrogen circulating pump output channel with liquid nitrogen circulating pump.
Compared with prior art, the utility model has the beneficial effects that
The new type nozzle structure of the utility model Curve guide impeller can reduce the gas congestion of nozzle entrance to reduce energy
Amount loss, while playing the role of improving compressed gas speed, help to improve energy separation efficiency.The utility model improvement is set
The vortex tube flow channel shape for counting not synteny can be improved the indoor eddy current effect of vortex, be conducive to the energy of cold and hot two strands of gas
Separation.The hot end regulating valve of the utility model Curve guide impeller can also effectively improve vortex energy separation effect, and cold end is effectively reduced
The temperature of pipe gas.
The utility model design application gasotron can taking human as prevention be vortexed, for formed central core reflux airflow
Axial movement create condition, additionally it is possible to increase the gradient between backset bed, be conducive to energy transmission, can be in not shadow
The length for reducing end tube while ringing refrigeration effect, reduces the volume of vortex tube.Meanwhile using expanding taper and cylinder
The heat pipe separation cell structure that formula combines can effectively improve the refrigerating efficiency of vortex tube.
The liquid nitrogen circulating cooling system of the utility model can efficiently reduce the temperature of vortex tube end tube in time, thus
Heat can be taken away in time, increase the cold and hot energy separation of vortex tube effect, while liquid nitrogen can be continuously circulated to vortex
Pipe carries out cooling down, no pollution to the environment.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 is liquid nitrogen circulating cooling vortex tube high-efficiency refrigerating system axonometric drawing；
Fig. 2 is vortex pipe refrigeration system explosive view；Fig. 3 is vortex pipe refrigeration system top view；Fig. 4 is vortex tube refrigeration system
System cross-sectional view；
Fig. 5 is liquid nitrogen cooling system axonometric drawing；
Fig. 6 is that liquid nitrogen tank and rubber stopper assemble axonometric drawing；Fig. 7 is liquid nitrogen tank and rubber stopper sectional arrangement drawing；Fig. 8 is Fig. 7
Middle sectional view along A-A；
Fig. 9 is 1 axonometric drawing of air inlet sleeve embodiment；Figure 10 is 1 top view of vortex tube air inlet sleeve embodiment；Figure 11 is figure
Sectional view along A-A in 10；
Figure 12 is 2 axonometric drawing of air inlet sleeve embodiment；Figure 13 is 2 top view of vortex tube air inlet sleeve embodiment, Tu14Wei
Sectional view along A-A in Figure 13；
Figure 15 is end tube axonometric drawing；Figure 16 is end tube top view, and Figure 17 is sectional view along A-A in Figure 16；
Figure 18 is 1 axonometric drawing of gasotron embodiment；Figure 19 is 1 top view of gasotron embodiment, and Figure 20 is figure
Sectional view along A-A in 19；
Figure 21 is 2 axonometric drawing of gasotron embodiment；Figure 22 is 2 top view of gasotron embodiment, and Figure 23 is figure
Sectional view along A-A in 22；
Figure 24 is 1 axonometric drawing of end tube regulating valve embodiment；Figure 25 is 1 cross-sectional view of end tube regulating valve embodiment, Figure 26
For sectional view along A-A in Figure 25；
Figure 27 is 2 axonometric drawing of end tube regulating valve embodiment；Figure 28 is 2 cross-sectional view of end tube regulating valve embodiment, Figure 29
For sectional view along A-A in Figure 28；
Figure 30 is cold end pipe main view；Figure 31 is cold end pipe top view；Figure 32 is sectional view along A-A in Figure 31；
Figure 33 is seal sleeve axonometric drawing；Figure 34 is seal sleeve top view；
Figure 35 is 1 main view of cold end pipe runner groove shape embodiment；
Figure 36 is 2 main view of cold end pipe runner groove shape embodiment；
Figure 37 is 3 main view of cold end pipe runner groove shape embodiment；
In figure, 1- vortex pipe refrigeration system, 2- liquid nitrogen circulating pump, 3- liquid nitrogen tank, 4- liquid nitrogen transport pipeline.101- vortex
Pipe air inlet sleeve, the first gasket seal of 102-, the second gasket seal of 103-, 104- end tube, 105- liquid nitrogen pipes outer sleeve,
106- gasotron, 107- gas control valve valve body, 108- gas control valve spool, 109- spiral liquid nitrogen cooling pipe,
110- third gasket seal 111- cold end pipe, 112- seal sleeve, 113- gasket, 201- liquid nitrogen circulating pump, 202- liquid nitrogen tank,
203- reflux sealing rubber plug, 204- liquid nitrogen transport reflux line, 205- exit seal rubber stopper, the output of 206- liquid nitrogen circulating pump
Pipeline, 207- vortex tube input duct, 10101 air inlet sleeves, 10102- involute reducing nozzle, 10401- end tube disk,
10402- cone expansion section, 10403- cylinder straight pipe, 10601- cylindrical sleeves, 10602- straightener(stator) blade, 11101- runner are convex
Rise, 11102- flow path groove, 11103- cold end pipe disk, the first straight pipe of 11104-, 11105- diffuser, 11106- second it is straight
Pipeline section.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
As background technique is introduced, there are rate of heat dissipation and refrigerating efficiency are low for swirl control refrigeration technique in the prior art
Under problem, in order to solve technical problem as above, present applicant proposes a kind of liquid nitrogen circulating cooling vortex tube highly effective refrigeration systems
System.
The liquid nitrogen circulating cooling vortex tube high-efficiency refrigerating system of the utility model includes that vortex pipe refrigeration system and liquid nitrogen are cold
But system two large divisions.Fig. 1 is liquid nitrogen circulating cooling vortex tube high-efficiency refrigerating system axonometric drawing, as shown in Fig. 1, liquid nitrogen circulation
Cooling vortex tube high-efficiency refrigerating system is by vortex pipe refrigeration system 1, liquid nitrogen circulating pump 2, liquid nitrogen tank 3, and liquid nitrogen transport pipeline 4 four
It is grouped as.
Fig. 2 is vortex guard system explosive view, as shown in Figure 2, in each component planogram.Fig. 3 bows for vortex pipe refrigeration system
View.
As shown in figure 4, vortex pipe refrigeration system is by vortex tube air inlet sleeve 101, the first gasket seal 102, the second sealing
Gasket 103, end tube 104, liquid nitrogen pipes outer sleeve 105, gasotron 106, gas control valve valve body 107, gas control
Valve core 108, third gasket seal 110, cold end pipe 111, seal sleeve 112, gasket 113 form.Vortex tube air inlet sleeve will
The end tube and cold end pipe for being located at its left and right connect, three be connected part formation cavity formed minor air cell.Into
Air-casing cylinder is provided with seal sleeve close to one end of cold end pipe, plays sealing and positioning action.Cold end pipe is from seal sleeve
Between bore portion be pierced by.Cold end pipe port accesses cryogenic gas of the external pipe by cold end discharge and introduces working region.End tube
It is pierced by from the end throughhole portions of air inlet sleeve, gasotron is put into heat pipe end regions, end tube by the end of end tube
Regulating valve includes gas control valve spool and gas control valve valve body two parts, and gas control valve valve body passes through screw thread and end tube
It is connected.
It is as follows to be vortexed guard system assemble sequence: firstly, the first gasket seal 102 is installed to vortex tube air inlet sleeve 101
It is interior and be tightly attached to right side inner face, gasotron 106 is installed to 104 right part region of end tube, end tube 104 is whole
It is penetrated from 101 left end of vortex tube air inlet sleeve and is close to end face with the first gasket seal 102, by spiral liquid nitrogen cooling pipe
109 are inserted in end tube 104 from 104 right end of end tube and are close to its left side, and liquid nitrogen pipes outer sleeve 105 is inserted in spiral liquid
Nitrogen cooling pipe 109 is simultaneously close to 104 left side of end tube, and gas control valve valve body 107 is tight by spiral with end tube 104
It is fixed, gas control valve spool 108 is installed on gas control valve valve body 107 by being threadedly engaged, by third gasket seal
110 are packed into wherein on the left of vortex tube air inlet sleeve 101 and are close to 104 left side of end tube, by cold end pipe 111 from vortex tube
It is packed on the left of air inlet sleeve 101 wherein and is close to 110 left side of third gasket seal, gasket 113 is inserted in seal sleeve 112
In and be close to its right side, be then installed to whirlpool by seal sleeve 112 integrally through cold end pipe 111 and by being threadedly engaged
In flow tube air inlet sleeve 101.
Fig. 5 is liquid nitrogen cooling system axonometric drawing.As shown in figure 5, liquid nitrogen cooling system is by liquid nitrogen circulating pump 201, liquid nitrogen tank
202, spiral liquid nitrogen cooling pipe 109, flow back sealing rubber plug 203, and liquid nitrogen transports reflux line 204, exit seal rubber stopper
205, liquid nitrogen circulating pump output channel 206, vortex tube input duct 207 forms.Spiral liquid nitrogen cooling pipe 109 is socketed in hot end
Outside pipe 104, liquid nitrogen pipes outer sleeve 105 is socketed in outside spiral liquid nitrogen cooling pipe 109, liquid nitrogen circulating pump output channel 206
(can use metal hose pipeline) one end is protruded into liquid nitrogen tank 202 by exit seal rubber stopper 205, one end and liquid nitrogen circulation
Pump 201 is connected, the vortex tube input duct 207 (can use metal hose pipeline) and spiral drawn from liquid nitrogen circulating pump 201
The liquid feeding end of liquid nitrogen cooling pipe 109 connects.Another section of liquid nitrogen transports reflux line 204 (can use metal hose pipeline)
One end is connected with the outlet end of spiral liquid nitrogen cooling pipe 109, and the other end and liquid nitrogen tank 202 pass through reflux sealing rubber plug
203 are connected.
Liquid nitrogen cooling system assemble sequence is as follows: firstly, liquid nitrogen circulating pump output channel 206 is passed through exit seal rubber
Plug 205 is connected with liquid nitrogen tank 202, by 206 other end of liquid nitrogen circulating pump output channel and 201 liquid nitrogen input terminal of liquid nitrogen circulating pump
It is connected, vortex tube input duct 207 is connected with 201 liquid nitrogen output end of liquid nitrogen circulating pump, completes cooling drop from vortex tube
The liquid nitrogen of temperature effect transports reflux line 204 by liquid nitrogen and flows back to liquid nitrogen tank 202, and liquid nitrogen transport reflux line 204 passes through reflux
Sealing rubber plug 203 is connected with liquid nitrogen tank 202.Liquid nitrogen tank shell is mostly aluminium alloy or stainless steel making, and inside groove is generally
The aluminium alloy of corrosion resistance.Liquid nitrogen transport pipeline outer surface is cased with heat-insulating material multilayer heat seal polythene material shell to realize liquid
The adiabatic heat-insulation of nitrogen transportational process.
Fig. 6 is that liquid nitrogen tank and rubber stopper assemble axonometric drawing.Fig. 7 is liquid nitrogen tank and rubber stopper assembling plan view, Fig. 8 Fig. 7
Middle sectional view along A-A.As shown, 202 upper surface of liquid nitrogen tank is driveed, there are two holes, and liquid nitrogen circulating pump output channel 206 is by going out
Mouthful sealing rubber plug 205 is connected with 202 left end hole of liquid nitrogen tank, passes through liquid nitrogen from the cool liquid nitrogen of effect of vortex tube completion
Transport reflux line 204 flows back to liquid nitrogen tank 202, and liquid nitrogen transports reflux line 204 and passes through reflux sealing rubber plug 203 and liquid nitrogen tank
202 right end holes are connected.
Fig. 9 is 1 axonometric drawing of vortex tube air inlet sleeve embodiment, and Figure 10 is 1 top view of vortex tube air inlet sleeve embodiment,
Figure 11 is sectional view along A-A in Figure 10.As shown in figure 11, vortex tube air inlet sleeve is by air inlet sleeve 10101 and involute variable diameter
Nozzle 10102 forms.Involute reducing nozzle includes the nozzle body connecting with air inlet sleeve, and the shape of nozzle body is involute
Shape, nozzle body one end are connect with air inlet sleeve, and other end suspension, suspension end is connect with air compressor, so that normal temperature compressed sky
Gas introduces vortex tube；Nozzle body internal diameter with air inlet sleeve connecting pin to suspension end gradual change by increasing.Conventional spout is letter
Monotype single injector, including ordinary rectangular nozzle and Archimedes spiral nozzle, inducer are to enter one from a straight tube
Prismatic circular ring path, subsequently into nozzle, since flow area is in the connecting portion of straight tube and prismatic circular ring path
Caliber shape has suddenly change after changing suddenly, will cause separation and the vortex of air-flow, and gas energy can be made to generate damage
It loses.On the one hand the involute reducing nozzle of the present embodiment can make from the compressed gas that nozzle flows into before entering minor air cell
Just vortex flow form is formed, while the tapering type nozzle of variable diameter can make compressed gas in the reality that takes a step forward for entering minor air cell
Now accelerate, facilitates the cold and hot energy separation effect of gas.The gas congestion of nozzle entrance is reduced, eddy current effect is improved.
Figure 12 is 2 axonometric drawing of vortex tube air inlet sleeve embodiment, and Figure 13 is 2 top view of vortex tube air inlet sleeve embodiment,
Figure 14 is sectional view along A-A in Figure 13.Its component part is identical as vortex tube air inlet sleeve embodiment 1, and only bleed type is
The tangential nozzle of double diameter-changeable.The tangential nozzle of double diameter-changeable includes two with the centrosymmetric nozzle body of air inlet sleeve, nozzle body and air inlet
The tangent connection of sleeve, nozzle body one end are connect with air inlet sleeve, and other end suspension, suspension end is connect with air compressor, nozzle
The internal diameter of body with air inlet sleeve connecting pin to suspension end gradual change by increasing.The tangential nozzle of the double diameter-changeable of the present embodiment is on the one hand
It can reduce the energy loss that the compressed gas flowed into from nozzle is generated when entering minor air cell by gas congestion, while variable diameter
Tapering type nozzle it is also possible that compressed gas enter minor air cell before further realize gas accelerate, help to improve vortex
The vortex energy separation effect of pipe.Wherein, nozzle flow channel should be processed by shot blasting, be reduced because of high speed and high pressure gas and runner side
Boundary's friction generates excessive energy loss.
Figure 15 be end tube separation chamber axonometric drawing, Figure 16 be end tube separation chamber top view, Figure 17 be Figure 16 in A-A to
Cross-sectional view.Its component part includes 10403. end tube of end tube disk 10401, cone expansion section 10402 and cylinder straight pipe
The structure that separation chamber is combined using expanding taper and column type, can greatly reduce the length of end tube, reduce vortex
The volume of pipe.The expansion angle θ of 10402 part of cone expansion section is more suitable between 2-4 °.Wherein, in end tube separation chamber
Surface should be processed by shot blasting, reduced and generated excessive energy loss because of the friction of high speed and high pressure gas and inner surface.Heat
End pipe material should select the biggish metal material of thermal coefficient to increase end tube and the external world and carry out heat exchange to improve heat dissipation effect
Rate and then raising energy separation effect.
Figure 18, Figure 19, Figure 20 be respectively 1 axonometric drawing of gasotron embodiment, in top view and Figure 19 A-A to section view
Figure.Gasotron includes that cylindrical sleeves 10601 and straightener(stator) blade 10601 form.Between between the straightener(stator) blade being oppositely arranged
Gap is gradually decrease to minimum be then gradually increased to maximum；The gap between straightener(stator) blade being oppositely arranged is consistently greater than 0.Due to
To cadion-acceleration, air-flow is moved forward to end tube direction along the periphery of pipeline, and the vortex being rotationally advancing reaches hot end adjusting
It has no longer been rotated before valve, the position that air-flow no longer rotates is called stagnation point.Gasotron is added near stagnation point, it can
Taking human as prevention vortex, for formed central core reflux airflow axial movement create condition, additionally it is possible to increase backset bed it
Between gradient, be conducive to energy transmission, the length of end tube can be reduced while not influencing refrigeration effect, reduced
The volume of vortex tube.The utility model devises two kinds of variform gasotrons of straightener(stator) blade from geometry principle
Vortex prevention is carried out to the stagnation point that air-flow no longer rotates, to reduce the length of end tube while not influencing refrigeration effect
With the volume of vortex tube.
Figure 21, Figure 22, Figure 23 be respectively 2 axonometric drawing of gasotron embodiment, in top view and Figure 22 A-A to section view
Figure.Its component part is identical as gasotron embodiment 1, and only straightener(stator) blade shape is different.The straightener(stator) blade being oppositely arranged
Between gap be gradually decrease to 0 and be then gradually increased to maximum.
Figure 24 is 1 axonometric drawing of end tube regulating valve embodiment, and Figure 25 is 1 left view of end tube regulating valve embodiment, Figure 26
For sectional view along A-A in Figure 25.End tube regulating valve includes gas control valve valve body 107 and gas control valve spool 108.This reality
Applying an end tube regulating valve is the globe valve being horizontally mounted, for short vortex tube, with the globe valve gas energy being horizontally mounted point
From better effect.
Figure 27 is 2 axonometric drawing of end tube regulating valve embodiment, and Figure 28 is 2 top view of end tube regulating valve embodiment, Figure 29
For sectional view along A-A in Figure 28.Its component part is identical as end tube regulating valve embodiment 1, only gas control valve shape and
Direction setting is different.The present embodiment end tube regulating valve is the globe valve being horizontally mounted, for short vortex tube, traditional level
The cone valve adjustment of installation is rotated by 90 °, i.e., is applied more preferably than globe valve refrigeration effect in short vortex tube using vertical taper valve.
Figure 30 is cold end pipe main view, and Figure 31 is cold end pipe top view, and Figure 32 is sectional view along A-A in Figure 31.It is formed
Part includes runner protrusion 11101, flow path groove 11102, cold end pipe disk 11103, the first straight pipe 11104, diffuser
11105, the second straight pipe 11106.Wherein, flow path groove should be processed by shot blasting, be reduced because of high speed and high pressure gas and runner side
Boundary's friction generates excessive energy loss.Cold end tube material should select the lesser metal material of thermal coefficient to reduce in pipeline
Interior cryogenic gas and the external world are exchanged heat so that gas temperature rises.According to boundary layer flow separation theorem, fluid is along expansion
The retarded motion of Zhang Liudao can be such that pressure streamwise increases, and here it is so-called reverse pressure gradient flows.Fluid is inverse
When flowing under to barometric gradient, miniature vortex tube performance study makes to be close to wall surface since the retardance of fluid viscosity and wall surface influences
The fluid velocity originally just slowly flowed declines rapidly, until being zero, pressure is lower than downstream again, therefore forces downstream fluid
Reflux is generated, fluid is pushed away wall surface with incoming flow collision and is formed boundary layer separation by reflux.By shape after boundary layer separation generation
At vortex area.Due to be vortexed loss kinetic energy thus produce trailing vortex resistance, greatly increase flow losses.Therefore, it is flowed to reduce
Dynamic loss, it is necessary to the angle of flare of diffuser pipe be limited, the expansion angle θ of 11105 part of diffuser is between 6-15 °
More it is suitable for.
Figure 33 is seal sleeve axonometric drawing, and Figure 34 is seal sleeve top view.Seal sleeve by cold end pipe and vortex tube into
It is sealed between air-casing cylinder.
Figure 35 is 1 main view of cold end pipe runner groove shape embodiment.Generally believe that compressed gas enters after nozzle at present
It is Archimedes spiral type being vortexed indoor motion profile, but studies leading for the Archimedes spiral type runner for reacting traditional
The problem of effect is general, and there is gas congestions in minor air cell is flowed, and gas velocity fails to be effectively improved, and is based on
More than, the utility model is designed not changing compressed gas on the basis of being vortexed indoor Archimedes spiral motion profile
Several novel minor air cell's inner flow passage shapes are to realize good water conservancy diversion and gas speedup effect.The present embodiment is with 4 runners
Example, as shown, 4 runners are uniformly arranged in runner protrusion along middle part.The present embodiment cold end pipe runner groove shape is double A Ji
Mead variable diameter helical line style.The double Archimedes's variable diameter helical line styles of the present embodiment are identical by first last radius and the center of circle is two identical
Archimedes spiral composition, the radius changing rate and helical angle of two curves are different, so when compressed gas enters double A Ji
After Mead variable diameter helical line style flow path groove, due to runner caliber be it is tapering type, so gas gas while being threadingly advanced
Body speed is also becoming larger, and helps to improve the vortex energy separation effect of vortex tube.Final gas is close in flow path groove end
Enter minor air cell's realization vortex energy separation like tangential spray from runner mouth.
Archimedes spiral equation:
ρ=a+b θ (1)
Its parametric equation is converted by polar equation:
X=ρ (θ) cos θ=(a+b θ) cos θ； (2)
Y=ρ (θ) sin θ=(a+b θ) sin θ (3)
Figure 36 is 2 main view of cold end pipe runner groove shape embodiment.The present embodiment by taking 6 runners as an example, component part with
Cold end pipe runner groove shape embodiment 1 is identical, only flow channel shape and number difference.The present embodiment cold end pipe runner groove shape is
Archimedes-parabola line style.In the present embodiment, parabola is interior side runner and Archimedes spiral is outer side runner.Equally
Runner caliber be it is tapering type, gas gas velocity while being threadingly advanced also is becoming larger, parabolical vertex with it is interior
Round edge circle intersection in side makees the through-flow face of the cross-section runner of normal and outside Archimedes spiral composition on parabolical vertex
Product reaches minimum, and gas velocity reaches maximum, finally sprays from vortex tube runner mouth into minor air cell and realizes vortex energy point
From.
Parabolic standard equation: y2=2p (x-p/2) (4)
Parabola polar equation:
Wherein, p be focus F (p/2,0) F arrive directrix distance, θ be parabola on point P (x, y) and focus F (p/2,
0) angle between connected straight line and positive direction of the x-axis.
Figure 37 is 3 main view of cold end pipe runner groove shape embodiment.The present embodiment by taking 4 runners as an example, component part with
Cold end pipe runner groove shape embodiment 1,2 is identical, only flow channel shape and number difference.The present embodiment cold end pipe runner groove shape
For Archimedes-circular arc line style.Circular curve is interior side runner in the present embodiment and Archimedes spiral is outer side runner.Compression
Gas realizes that vortex accelerates in flow path groove, finally sprays from vortex tube runner mouth and enters minor air cell's realization vortex energy point
From.
This programme specific work process is as follows:
The liquid nitrogen circulating cooling vortex tube high-efficiency refrigerating system of the utility model includes that vortex pipe refrigeration system and liquid nitrogen are cold
But system two large divisions.When using the liquid nitrogen circulating cooling vortex tube high-efficiency refrigerating system, liquid nitrogen circulating pump is first turned on, is made
Liquid nitrogen cooling system is in running order, precools to the end tube of vortex pipe refrigeration system.Then opening and vortex tube
The outside air compressor that refrigeration system nozzle is connected, by opposite after the cooling, filtering, desiccation of air compressor
Pure compressed gas enters vortex pipe refrigeration system by vortex pipe refrigeration system nozzle and carries out the separation of gas energy heat, warp
Cryogenic gas after crossing vortex tube energy separation is discharged from vortex tube cold end pipe, the extension tube attached then accessed by cold end pipe port
Road cryogenic gas introduces machining area and realizes the effect of cooling.
Vortex pipe refrigeration system working principle:
Vortex pipe refrigeration system is a kind of simple energy separation device of structure, by nozzle, minor air cell, cold end pipe, hot end
Five core compositions of pipe and gas control valve.It is vortexed separation principle using energy, by compressed gas by air inlet when work
Pipeline is passed through nozzle of vortex tube, unexpected increase and pressure difference due to space, with high speed edge after gas expansion acceleration
Tangential direction enters minor air cell, and air-flow forms high speed in minor air cell and is vortexed, due between gas control valve and cold end pore plate
Pressure difference, the central area in vortex tube will form reflux gas.Due to the boundary angular speed very little of outer gas stream, but it is close
Central area air-flow angular speed is very big.The angular speed of all air-flows is finally set to tend to be equal under the action of inertia force.Therefore, gas
During flowing to end tube direction, internal layer air velocity gradually decreases stream and outer gas flow speed is then gradually increased, from
From the perspective of energy transfer, energy is transmitted to outer gas flow from internal layer air-flow, and internal layer flow expansion work done reduces to temperature, and
The temperature of outer gas flow then increases.At the same time, outer gas flow heat also transmit by inner layer air-flow center, but slower than the transmitting of function
Very much, the kinetic energy of internal layer air-flow supply outer gas flow is enough to compensate due to the generated hot-fluid that rubs and conduct heat.So internal layer gas
Stream temperature gradually decreases and the kinetic energy of outer gas flow acquisition is more than the heat that it loses, these kinetic energy are in end tube due to friction
It is eventually converted into interior energy, increases the temperature of outer gas flow.Finally, compressed gas is separated into total temperature not phase after vortex transformation
Deng cold and hot two parts air-flow.Wherein, the forced vortex reflux airflow temperature in centre reduce to be formed low-temperature airflow and by
Cold end pipe side excludes, and the free vortex gas flow temperature in outer layer position increases to form thermal current, from end tube through gas
Control valve adjusts discharge.Normal temperature compressed air forms cold and hot two strands of air-flows from vortex tube two by the energy vortex separation of vortex tube
Side is discharged respectively, and here it is so-called " eddy current effects " or " blue gram effect ".
In existing swirl control refrigeration technique, simple, easy maintenance, failure rate are low with its structure for vortex tube, are not necessarily to electricity
The advantages such as energy, mechanical energy and chemical energy are used widely, however the problem of the low always vortex tube research field of refrigerating efficiency,
The heat dissipation of heat pipe internal heating air is difficult simultaneously, also has certain restriction to the energy separation effect of vortex tube, therefore how to design
A kind of vortex pipe refrigeration system that can be effectively improved rate of heat dissipation and effectively improve refrigerating efficiency is the emphasis of those skilled in the art
Research contents.
In view of the above-mentioned problems, to solve the bottleneck of existing swirl control refrigeration technique, the utility model provides a kind of liquid nitrogen
Circulating cooling vortex tube high-efficiency refrigerating system.The utility model innovates structure based on the refrigeration principle of vortex tube, right
Nozzle form, minor air cell's flow channel shape, hot end regulating valve structure and separation chamber shape have carried out improving setting, and increase devises
Rectifier, meanwhile, vortex tube heat pipe is cooled down using liquid nitrogen circulation, realizes the rate of heat dissipation and refrigeration for effectively improving vortex tube
The purpose of efficiency.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (10)
1. a kind of liquid nitrogen circulating cooling vortex tube high-efficiency refrigerating system, characterized in that cold including vortex pipe refrigeration system and liquid nitrogen
But system, the vortex pipe refrigeration system include the air inlet sleeve with nozzle, and air inlet sleeve one end is socketed cold end pipe and by close
Sleeve seal is sealed, other end socket end tube is simultaneously sealed by gasket seal, and cold end pipe, air inlet sleeve and end tube form vortex
Room；The end tube is equipped with rectifier far from one end inside of air inlet sleeve；
The liquid nitrogen cooling system includes the spiral liquid nitrogen cooling pipe being wound in outside end tube, and spiral liquid nitrogen cooling pipe follows
Ring conveying liquid nitrogen cools down end tube.
2. refrigeration system as described in claim 1, characterized in that the cold end pipe includes cold end pipe disk, cold end pipe disk
Runner protrusion is arranged in one end, and cold side conduits are arranged in the cold end pipe disk other end；A plurality of arc is arranged around center in the runner protrusion
Shape flow path groove；The end tube and the docking setting of cold end pipe, the nozzle of air inlet sleeve are set to cold end pipe runner high spot；
The shape of the arced flow path slot can for double Archimedes's variable diameter helical line style types, Archimedes-parabola line style, Ah
Any one in base Mead-circular arc line style.
3. refrigeration system as claimed in claim 2, characterized in that cold end pipe disc centre setting connection cold side conduits and
The channel of runner protrusion；The cold side conduits include sequentially connected first straight pipe, diffuser and the second straight pipe, and described
One straight pipe is connect with cold end pipe disk；The first inside diameter of straight pipe section size is less than the second inside diameter of straight pipe section size, the expansion
Press the internal diameter of section by increasing with the first straight pipe junction to the second straight pipe junction gradual change.
4. refrigeration system as described in claim 1, characterized in that the end tube includes end tube disk, end tube disk
One end is connect with hot side conduit；The channel that setting is connected to hot side conduit in the middle part of the end tube disk；The hot side conduit packet
The cone expansion section connecting with end tube disk is included, cone expansion section is connect with cylinder straight pipe；The cone expansion section internal diameter
Size with end tube disk junction to the junction gradual change of cylinder straight pipe by increasing.
5. refrigeration system as described in claim 1, characterized in that the nozzle is the tangential nozzle of double diameter-changeable or involute variable diameter
Nozzle.
6. refrigeration system as claimed in claim 5, characterized in that the tangential nozzle of double diameter-changeable includes two with air inlet sleeve
Centrosymmetric nozzle body, nozzle body and the tangent connection of air inlet sleeve, the internal diameter of nozzle body by with air inlet sleeve connecting pin
Increase to suspension end gradual change；The involute reducing nozzle includes the nozzle body connecting with air inlet sleeve, and the shape of nozzle body is
Involute, nozzle body internal diameter with air inlet sleeve connecting pin to suspension end gradual change by increasing.
7. refrigeration system as described in claim 1, characterized in that the rectifier includes cylindrical sleeves, and cylindrical sleeves are arranged
Inside end tube, multiple equally distributed straightener(stator) blades are arranged in the cylindrical sleeves inner wall.
8. refrigeration system as claimed in claim 7, characterized in that the gap between the straightener(stator) blade being oppositely arranged is gradually
It is decreased to minimum be then gradually increased to maximum；The gap between straightener(stator) blade being oppositely arranged is consistently greater than 0；
It is then gradually increased alternatively, the gap between the straightener(stator) blade being oppositely arranged is gradually decrease to 0 to maximum.
9. refrigeration system as described in claim 1, characterized in that hot end is arranged far from one end of air inlet sleeve in the end tube
Regulating valve, the hot end regulating valve include the gas control valve valve body being sheathed on outside end tube, gas control valve body wall
Gas control valve spool is set.
10. refrigeration system as described in claim 1, characterized in that the liquid nitrogen cooling system further includes liquid nitrogen circulating pump, liquid
Nitrogen cycle pump is connected to by vortex tube input duct with spiral liquid nitrogen cooling pipe one end, and the spiral liquid nitrogen cooling pipe other end is logical
It crosses liquid nitrogen transport reflux line to be connected to liquid nitrogen tank, liquid nitrogen tank is connected to by liquid nitrogen circulating pump output channel with liquid nitrogen circulating pump.
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| CN201820515099.2U CN208254004U (en) | 2018-04-11 | 2018-04-11 | A kind of liquid nitrogen circulating cooling vortex tube high-efficiency refrigerating system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114145138A (en) * | 2021-12-07 | 2022-03-08 | 徐州优盛农业科技发展有限公司 | Crop seed short-term storage device based on lan ke huxley effect |
| CN117101997A (en) * | 2023-09-06 | 2023-11-24 | 苏州子高科技有限公司 | Drying device for coating equipment |
-
2018
- 2018-04-11 CN CN201820515099.2U patent/CN208254004U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114145138A (en) * | 2021-12-07 | 2022-03-08 | 徐州优盛农业科技发展有限公司 | Crop seed short-term storage device based on lan ke huxley effect |
| CN114145138B (en) * | 2021-12-07 | 2022-11-08 | 徐州优盛农业科技发展有限公司 | Crop seed short-term storage device based on langke huxley effect |
| CN117101997A (en) * | 2023-09-06 | 2023-11-24 | 苏州子高科技有限公司 | Drying device for coating equipment |
| CN117101997B (en) * | 2023-09-06 | 2024-02-06 | 苏州子高科技有限公司 | Drying device for coating equipment |
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