CN205688055U - A kind of multi-functional temp controllable type liquid bridge maker - Google Patents
A kind of multi-functional temp controllable type liquid bridge maker Download PDFInfo
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- CN205688055U CN205688055U CN201620550486.0U CN201620550486U CN205688055U CN 205688055 U CN205688055 U CN 205688055U CN 201620550486 U CN201620550486 U CN 201620550486U CN 205688055 U CN205688055 U CN 205688055U
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- sleeve pipe
- bridge
- supplying gas
- bridge post
- post
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Abstract
A kind of multi-functional temp controllable type liquid bridge maker, is made up of support, liquid bridge generating means, attemperating unit and cooling water tank four part, and described liquid bridge generating means includes upper bridge post that vertical center line is located along the same line and lower bridge post, and observes sleeve pipe；Described upper bridge post and lower bridge post are respectively at upper bridge post installing hole and the lower bridge post installing hole right angle setting of support bottom of frame upper, and upper bridge post is by upper sleeve pipe and the upper dish welding assembly of uniformly supplying gas, and lower bridge post is by lower wall and lower sleeve pipe welding assembly of uniformly supplying gas；Described observation sleeve pipe coaxial package is in upper sleeve pipe and the lower bushing outer surface fitting tightly of uniformly supplying gas of uniformly supplying gas；It is provided with trip bolt on the support of described upper bridge post installing hole side；Described attemperating unit includes heating tank, heating rod, thermocouple, temperature controller, relay and power supply, and wherein heating tank is welded in the upper jacket exterior of uniformly supplying gas above support；Described cooling water tank is welded in lower jacket exterior of uniformly supplying gas.
Description
Technical field
This utility model belongs to fluid physics technical field, particularly relates to a kind of multi-functional temp controllable type liquid bridge raw
Grow up to be a useful person.
Background technology
Float-zone method is a kind of wide variety of method preparing crystalline material, for simulating crystal growth with floating zone method process
Physical model is referred to as liquid bridge.Theoretical research shows, around shear flow, the temperature difference and liquid bridge volume ratio are to affect liquid bridge interface shape
Principal element, but traditional liquid bridge generating means structure is complicated, function singleness, it is impossible to realize these three principal element simultaneously
Investigation function, therefore result of study is the most unilateral, and obtained data reliability is poor；Additionally, traditional liquid bridge is raw
Become the mode that directly liquid bridge heated of the commonly used Electric radiant Heating Film of device, easily cause liquid bridge and be heated uneven and heating process
Unstable so that in experimentation, liquid bridge temperature is frequently beated, and the data stability obtained is poor；Additionally, tradition liquid bridge is raw
The mode becoming device to produce the temperature difference is based purely on the heating of dish on liquid bridge, does not cool down liquid bridge lower wall, the most often
The temperature range obtained is less.
Chinese patent CN204849110U discloses shear flow formula liquid bridge maker around one, can be passed through various flows
Speed and the shear flow in direction, and can arbitrarily regulate liquid bridge volume ratio, more traditional liquid bridge maker has had bigger improvement, but should
Liquid bridge maker does not possess heating and refrigerating function, is only applicable under room temperature study shear flow and liquid pontic amasss comparison Ye Qiao circle
The impact of face shape, it is impossible to the thermocapillary convection phenomenon introducing the liquid bridge upper lower burrs temperature difference is studied.Shaking of thermocapillary convection
Swing feature and be the study hotspot of modern fluid mechanics by the permanent whole process flowing to turbulent transition.As long as in flow surface
There is the inhomogeneities of temperature, will Fluid Motion Driven By Moving；But it is when the temperature difference of flow surface is more than a marginal value, this
The thermocapillary convection that surface tension gradient drives can be changed into oscillatory flow by the steady motion of a fluid.Flowing feelings near this critical state
The emphasis that condition is studied the most instantly.This critical temperature difference state and by the permanent whole process flowing to oscillatory flow transition be tradition
Disclosed in liquid bridge maker and Chinese patent CN204849110U, liquid bridge maker is not provided that.
Therefore, need a kind of simple in construction, multiple functional multi-functional temp controllable type liquid bridge maker badly, can be passed through
May also provide on the basis of different in flow rate and the shear flow in direction and regulation liquid bridge volume ratio including critical temperature difference is big
The range-controllable temperature difference.
Summary of the invention
The problem existed for prior art, this utility model provides a kind of multi-functional temp controllable type liquid bridge maker,
Described liquid bridge maker diverse in function: sleeve pipe can provide around different in flow rate and direction to liquid bridge by the most uniformly supplying gas
Shear flow；By attemperating unit upper dish heated and cooling water tank carries out cooling and can realize upper and lower dish and produce lower wall
Controllable temperature difference on a large scale；Different volume ratios can be produced by the height of the upper bridge post of regulation.The technical solution of the utility model
For:
A kind of multi-functional temp controllable type liquid bridge maker, by support, liquid bridge generating means, attemperating unit and cooling water tank
Four parts compositions, described liquid bridge generating means includes upper bridge post that vertical center line is located along the same line and lower bridge post, and
Observe sleeve pipe；Described upper bridge post and lower bridge post are installed at the upper bridge post installing hole of frame upper and the lower bridge post of support bottom respectively
Hole right angle setting, upper bridge post is by upper sleeve pipe and the upper dish welding assembly of uniformly supplying gas, and lower bridge post is by lower wall and lower sleeve pipe of uniformly supplying gas
Welding assembly, upper sleeve pipe of uniformly supplying gas is equipped with gas with the junction of upper dish and the lower junction uniformly supplying gas sleeve pipe and lower wall
Hole；Described observation sleeve pipe coaxial package in upper sleeve pipe and the lower bushing outer surface fitting tightly of uniformly supplying gas of uniformly supplying gas, and
The internal diameter observing sleeve pipe is equal with the external diameter of upper uniformly supply gas sleeve pipe and lower sleeve pipe of uniformly supplying gas；Described upper bridge post installing hole side
It is provided with trip bolt on support, upper bridge post can be made to move up and down by the degree of tightness of regulation trip bolt thus change the body of liquid bridge
Long-pending ratio；Described attemperating unit includes heating tank, heating rod, thermocouple, temperature controller, relay and power supply, wherein heating tank
It is welded in the upper jacket exterior of uniformly supplying gas above support；Described cooling water tank is welded in lower jacket exterior of uniformly supplying gas.
In above-mentioned maker, the hole wall of described upper bridge post installing hole and lower bridge post installing hole applies heat insulating coat, is used for
When preventing work, attemperating unit is transferred to the heat of dish and cooling water tank is transferred to the cold of lower wall and scatters and disappears.
In above-mentioned maker, described upper bridge post and lower bridge post use the material that heat conductivility is good to make, preferably copper or copper
Alloy；When being passed through gas from the upper sleeve pipe of uniformly supplying gas of upper bridge post, gas enters from the top of upper sleeve pipe of uniformly supplying gas, through upper
The pore of sleeve pipe of uniformly supplying gas enters to be observed in sleeve pipe, more uniformly supplies gas under sleeve pipe from lower through the pore of lower sleeve pipe of uniformly supplying gas
Portion flows out, and vice versa.
In above-mentioned maker, described lower jacket exterior of uniformly supplying gas is welded with pallet, and pallet is positioned on cooling water tank
Side, for as the bottom support observing sleeve pipe.
In above-mentioned maker, described observation sleeve pipe is glass bushing, its length according to the lower plane of upper bridge post installing hole with
Vertical dimension between tray upper surface determines.
In above-mentioned maker, in described attemperating unit, connected mode during each component working is: heating rod respectively with power supply
It is connected to form heating circuit with relay, and heating rod is inserted heating tank；Temperature controller and relay are connected to form control
Loop, thermocouple is close to dish.
In above-mentioned maker, arranging dismountable heat insulating mattress bottom described heating tank, wherein the heating in heating tank is situated between
No. 50 silicone oil that matter selective volatilization is relatively low, glycerol, or ethylene glycol etc..
In above-mentioned maker, described cooling water tank is provided with medium inlet and media outlet, and bottom arranges dismountable heat insulation
Pad, the cooling medium selection cryogenic temperature in cooling water tank is at the medium of 0 ° of below C, such as ethanol and the mixed solution of water, chlorine
Change sodium solution or calcium chloride solution etc..
Compared with prior art, feature of the present utility model and providing the benefit that:
This utility model simple in construction, compared with traditional liquid bridge maker, can study around shear flow, the temperature difference simultaneously
With the impact on liquid bridge interface shape of the liquid bridge volume ratio these three factor, while saving experimental cost, simplify experimentation；And
And the realization of this utility model upper lower burrs temperature difference accurately can control according to requirement of experiment, and can provide and include that critical temperature difference exists
The interior temperature difference on a large scale, it is simple to research, by the permanent whole process flowing to oscillatory flow transition, considers each factor raw to crystal
The impact of growth process, the data that more existing liquid bridge maker is obtained are comprehensive, stable, reliable, grow research float-zone crystal
Journey is significant.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of multi-functional temp controllable type liquid bridge maker of the present utility model；
Fig. 2 is the structural representation of upper bridge post of the present utility model；Wherein (a) is the plane graph of upper bridge post, and (b) is upper bridge
The profile of post, (c) is the side view of upper bridge post；
Fig. 3 is the structural representation of lower bridge post of the present utility model；Wherein (a) is the plane graph of lower bridge post, and (b) is lower bridge
The profile of post, (c) is the side view of lower bridge post；
Fig. 4 is the structural representation of attemperating unit of the present utility model；
Wherein, 1-support, 2-trip bolt, 3-heat insulating mattress, 4-upper bridge post, bridge post under 5-, 6-observes sleeve pipe, and 7-heats
Groove, sleeve pipe that 8-uniformly supplies gas, the upper dish of 9-, 10-pore, sleeve pipe of uniformly supplying gas under 11-, 12-cooling water tank, 13-pallet, 14-
Lower wall, the medium inlet of 15-cooling water tank, the media outlet of 16-cooling water tank, 17-power supply, 18-relay, 19-temperature control
Device processed, 20-heating rod, 21-thermocouple.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is elaborated, but protection domain of the present utility model is not limited only to following
Embodiment.
A kind of multi-functional temp controllable type liquid bridge maker, its structure as it is shown in figure 1, by support 1, liquid bridge generating means,
Attemperating unit and cooling water tank 12 4 part composition, described liquid bridge generating means includes what vertical center line was located along the same line
Upper bridge post 4 and lower bridge post 5, and observe sleeve pipe 6；Described upper bridge post 4 and lower bridge post 5 are installed at the upper bridge post of frame upper respectively
Hole and the lower bridge post installing hole right angle setting of support bottom, upper bridge post 4 by upper sleeve pipe 8 and upper dish 9 welding assembly of uniformly supplying gas, under
Bridge post 5 by lower wall 14 and lower sleeve pipe 11 welding assembly of uniformly supplying gas, the junction of upper uniformly supply gas sleeve pipe 8 and upper dish 9 and under
Uniformly the supply gas junction of sleeve pipe 11 and lower wall 14 is equipped with pore 10, and the structure of upper bridge post and lower bridge post is respectively such as Fig. 2 and Fig. 3
Shown in；Described lower jacket exterior of uniformly supplying gas is welded with pallet 13, and pallet is positioned at above cooling water tank, for as observing
The bottom support of sleeve pipe；Described observation sleeve pipe 6 is glass bushing, a length of 8cm, and coaxial package is in upper sleeve pipe 8 He of uniformly supplying gas
The most uniformly supply gas sleeve pipe 11 outer surface fitting tightly, and observe the internal diameter of sleeve pipe 6 with upper uniformly supply gas sleeve pipe 8 and lower uniformly
The external diameter of sleeve pipe 11 of supplying gas is equal；It is provided with trip bolt 2, by regulation fastening spiral shell on the support of described upper bridge post installing hole side
The degree of tightness of nail 2 can make bridge post 4 move up and down thus change the volume ratio of liquid bridge；Described attemperating unit includes heating tank 7, heating
Rod 20, thermocouple 21, temperature controller 19, relay 18 and power supply 17, wherein heating tank 7 be welded in above support upper uniformly
Sleeve pipe 8 of supplying gas is outside, arranges dismountable heat insulating mattress 3 bottom heating tank, and the thermal medium that adds in heating tank is glycerol；Described cold
But water tank 12 is welded in lower sleeve pipe 11 outside of uniformly supplying gas, and cooling water tank 12 is provided with medium inlet 15 and media outlet 16, bottom
Arranging dismountable heat insulating mattress 3, the cooling medium in cooling water tank selects saturated nacl aqueous solution.
In above-mentioned maker, on the hole wall of described upper bridge post installing hole and lower bridge post installing hole apply composite aluminium-magnesium-silicate every
Hot coating, in time preventing work, attemperating unit is transferred to the heat of dish and cooling water tank is transferred to the cold of lower wall and dissipates
Lose.
In above-mentioned maker, upper dish 9 and the equal diameters of lower wall 14 in described upper bridge post 4 and lower bridge post 5, upper uniformly supply gas
The internal-and external diameter of sleeve pipe 8 and lower sleeve pipe 11 of uniformly supplying gas is equal, and upper sleeve pipe 8 and lower the interior of sleeve pipe 11 of uniformly supplying gas of uniformly supplying gas
Footpath is greater than the diameter of dish and lower wall；Upper bridge post and lower bridge post use the fine copper that heat conductivility is good to make.
In above-mentioned maker, in described attemperating unit, connected mode during each component working is as shown in Figure 4: heating rod 20 points
Not and power supply 17 and relay 18 are connected to form heating circuit, and heating rod 20 is inserted heating tank 7；Temperature controller 19 and continuing
Electrical equipment 18 is connected to form control loop, and thermocouple 21 is close to dish 9；Temperature controller has setting experimental temperature and display actual measurement
The function of temperature, when the observed temperature that thermocouple records is higher than the experimental temperature set, the relay in heating circuit then can
Disconnecting, heating rod stops heating；When the observed temperature recorded is less than the experimental temperature set, the relay in heating circuit is then
Can connect, heating rod continues heating；Therefore attemperating unit can make dish reach stable setting experimental temperature.
The process using the maker of the present embodiment to carry out testing is as follows: first the height of the upper bridge post of regulation is again with fastening spiral shell
Its position liquid bridge volume ratio required for obtaining fixed by nail, re-uses Miniature injection pump and experimental liquid injects upper dish exactly
And between lower wall, forming liquid bridge, static liquid bridge maintains interface shape by surface tension；Then will add thermal medium glycerol to inject
In heating tank, insert heating rod (noting allowing heating rod contact with the wall of heating tank), then thermocouple is fixed on upper dish
Place；At lower wall, also connect a thermocouple for monitoring lower wall temperature, cooling water tank injects saturated nacl aqueous solution (temperature
Degree is at-10 ° of C), install and observe sleeve pipe；Power-on and temperature controller, set experimental temperature by temperature controller, to adding
Medium heating in heat channel；Next being passed through gas from upper sleeve pipe of uniformly supplying gas, gas enters from the upper top uniformly supplying gas sleeve pipe
Enter, enter through the pore of upper sleeve pipe of uniformly supplying gas and observe in sleeve pipe, more uniformly supply gas from lower through the pore of lower sleeve pipe of uniformly supplying gas
The bottom of sleeve pipe is flowed out, and the flow velocity controlling gas forms the shearing gas of top-down different in flow rate at liquid bridge Free Surface
Stream, vice versa.
Utilize the multi-functional temp controllable type liquid bridge maker research air velocity of the present embodiment, airflow direction, the temperature difference big
Little and liquid pontic amasss the impact of comparison liquid bridge interface shape, can be implemented by following four specific experiment scheme:
In the case of experimental program one: airflow direction, temperature difference size and liquid bridge volume ratio are certain, convert different gas velocities
Degree, studies the air velocity impact on liquid bridge interface shape.Due in the observation sleeve pipe 6 of the liquid bridge maker of the present embodiment
Footpath and upper and lower dish diameter are all definite values, therefore just can change air velocity by controlling the flow of gas.Air velocity by with
Lower formula calculates:
[1]
In formula [1],UFor air velocity,QFor gas flow,DFor observing the internal diameter of sleeve pipe,dFor upper and lower dish diameter.
Experimental program two: in the case of air velocity, temperature difference size and liquid bridge volume ratio are certain, convert different gas
Flow path direction, studies the airflow direction impact on liquid bridge interface shape.The liquid bridge maker of the present embodiment can provide two kinds of air-flow sides
To: 1), air-flow inject from upper sleeve pipe 8 of uniformly supplying gas, i.e. airflow direction is consistent with gravity direction；2), air-flow is uniformly supplied gas from lower
Sleeve pipe 11 injects, i.e. airflow direction is contrary with gravity direction.
Experimental program three: in the case of air velocity, airflow direction and liquid bridge volume ratio are certain, convert the different temperature difference
Size, studies the impact on liquid bridge interface shape of the temperature difference size.Temperature extent can be set by regulation temperature controller 19.
Experimental program four: in the case of air velocity, airflow direction and temperature difference size are certain, convert different liquid pontics
Long-pending ratio, research liquid pontic amasss the impact of comparison liquid bridge interface shape.Between liquid bridge volume ratio is equal to the long-pending and upper and lower dish of liquid pontic
The ratio of cylindrical volume.Because the diameter of upper and lower dish is certain, so just can change upper and lower by the height of the upper bridge post 4 of regulation
Cylindrical volume between dish, meanwhile, changes liquid pontic the most accordingly and amasss.In regulation, bridge post 4 reaches the height of requirement of experiment, then profit
Its position is fixed with trip bolt 2.
Wherein, liquid pontic is long-pending is to shoot liquid bridge interface shape, further according to the number of liquid bridge interface shape by high-speed camera
Word image calculates, and its calculating formula is:
[2]
In formula [2],V 0 Amass for liquid pontic,hFor the vertical dimension between upper and lower dish,F(z)Number for liquid bridge interface shape
Word image function,zIntegration variable for liquid bridge interface shape.
Cylindrical volume between upper and lower dish is that the vertical dimension between the diameter by upper and lower dish and upper and lower dish determines,
Its calculating formula is:
[3]
In formula [3],V 1 For the cylindrical volume between upper and lower dish,hFor the vertical dimension between upper and lower dish,dFor upper and lower dish
Diameter.
Then the calculating formula of volume ratio is:
[4]
In formula [4], the diameter of upper and lower dishdFor definite value, can be recorded by slide gauge, the vertical dimension between upper and lower dishhIt is experimental variable, can get different by the height of the upper bridge post of regulationh。
In whole experimentation, the impact on liquid bridge interface shape of each variable, shoot liquid bridge by high-speed camera
The difformity at interface is further analyzed.
Claims (7)
1. a multi-functional temp controllable type liquid bridge maker, it is characterised in that by support, liquid bridge generating means, attemperating unit and
Cooling water tank four part forms, and described liquid bridge generating means includes upper bridge post and the Xia Qiao that vertical center line is located along the same line
Post, and observe sleeve pipe；Described upper bridge post and lower bridge post are respectively under the upper bridge post installing hole and support bottom of frame upper
Bridge post installing hole right angle setting, upper bridge post by upper sleeve pipe and the upper dish welding assembly of uniformly supplying gas, lower bridge post by lower wall and lower uniformly
Supply gas sleeve pipe welding assembly, upper sleeve pipe and the junction of upper dish and the lower sleeve pipe junction with lower wall of uniformly supplying gas of uniformly supplying gas
It is equipped with pore；Described observation sleeve pipe coaxial package is in upper sleeve pipe and the lower bushing outer surface closely pasting of uniformly supplying gas of uniformly supplying gas
Close, and the internal diameter observing sleeve pipe is equal with the external diameter of upper uniformly supply gas sleeve pipe and lower sleeve pipe of uniformly supplying gas；Described upper bridge post is pacified
It is provided with trip bolt on the support of dress side, hole, upper bridge post can be made to move up and down by the degree of tightness of regulation trip bolt thus change
The volume ratio of liquid bridge；Described attemperating unit includes heating tank, heating rod, thermocouple, temperature controller, relay and power supply, its
Middle heating tank is welded in the upper jacket exterior of uniformly supplying gas above support；Described cooling water tank is welded in lower uniformly supplying gas outside sleeve pipe
Portion.
A kind of multi-functional temp controllable type liquid bridge maker the most according to claim 1, it is characterised in that described upper bridge post
It is coated with attemperating unit when being applied to prevent work on the hole wall of installing hole and lower bridge post installing hole and is transferred to the heat of dish and cold
But water tank is transferred to the heat insulating coat that the cold of lower wall scatters and disappears.
A kind of multi-functional temp controllable type liquid bridge maker the most according to claim 1, it is characterised in that described lower uniformly
Jacket exterior of supplying gas is welded with pallet, and pallet is positioned at above cooling water tank.
A kind of multi-functional temp controllable type liquid bridge maker the most according to claim 3, it is characterised in that described observation set
Pipe is glass bushing, and its length determines according to the vertical dimension between lower plane and the tray upper surface of upper bridge post installing hole.
A kind of multi-functional temp controllable type liquid bridge maker the most according to claim 1, it is characterised in that described temperature control fills
In putting, connected mode during each component working is: heating rod is connected to form heating circuit respectively with power supply and relay, and will add
Hot pin inserts heating tank；Temperature controller and relay are connected to form control loop, and thermocouple is close to dish.
A kind of multi-functional temp controllable type liquid bridge maker the most according to claim 1, it is characterised in that described heating tank
Bottom arranges dismountable heat insulating mattress.
A kind of multi-functional temp controllable type liquid bridge maker the most according to claim 1, it is characterised in that described cooling water
Case is provided with medium inlet and media outlet, and bottom arranges dismountable heat insulating mattress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620550486.0U CN205688055U (en) | 2016-06-08 | 2016-06-08 | A kind of multi-functional temp controllable type liquid bridge maker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620550486.0U CN205688055U (en) | 2016-06-08 | 2016-06-08 | A kind of multi-functional temp controllable type liquid bridge maker |
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| Publication Number | Publication Date |
|---|---|
| CN205688055U true CN205688055U (en) | 2016-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620550486.0U Expired - Fee Related CN205688055U (en) | 2016-06-08 | 2016-06-08 | A kind of multi-functional temp controllable type liquid bridge maker |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105839174A (en) * | 2016-06-08 | 2016-08-10 | 东北大学 | Multifunctional temperature-controllable liquid bridge generator |
-
2016
- 2016-06-08 CN CN201620550486.0U patent/CN205688055U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105839174A (en) * | 2016-06-08 | 2016-08-10 | 东北大学 | Multifunctional temperature-controllable liquid bridge generator |
| CN105839174B (en) * | 2016-06-08 | 2018-05-29 | 东北大学 | A kind of multi-functional temp controllable type liquid bridge maker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161116 Termination date: 20180608 |