CN205164762U - Stable device that boils of microtubule - Google Patents
Stable device that boils of microtubule Download PDFInfo
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- CN205164762U CN205164762U CN201520977353.7U CN201520977353U CN205164762U CN 205164762 U CN205164762 U CN 205164762U CN 201520977353 U CN201520977353 U CN 201520977353U CN 205164762 U CN205164762 U CN 205164762U
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Abstract
The utility model discloses a stable device that boils of microtubule, the device is through being equipped with characteristic concave -convex structure at the microtubule inner wall, and characteristic concave -convex structure and fluid contact last the gassing in whole heating process, carry out the disturbance through the bubble that produces to liquid and stir, and the bumping is avoided in the accumulation of overheated liquid in the suppression heating fluid body, makes liquid be in stable boiling state, the device's microtubule inner wall is equipped with characteristic concave -convex structure, and the microtubule outer wall is equipped with the dot interlace and is equipped with the lower extreme interface with the winding in the heating wire between the dot interlace, microtubule bottom, and the lower extreme interface is equipped with the transition tubule. The utility model provides a stable device that boils of microtubule can go on under the ordinary pressure, and can not the bumping, and boiling process is reliable and stable.
Description
Technical field
The utility model relates to boiling device, is specifically related to a kind of microtubule stabilization boiling device.
Background technology
Along with analytical instrument is to miniaturized, fast-developing in linearize, automation and portability direction, the boiling device in laboratory is miniaturized, automation becomes key technology.Had multiple technologies scheme at present, but these technical schemes are most all inconsistent with the boiling condition in Routine Test Lab, make instrument data and laboratory data variant.
After boiling device miniaturization, what first will solve is exactly bumping phenomenon.Research finds, when liquid is fine quartz pipe (diameter≤2cm) in during ebuillition of heated, the liquid in pipe can the higher generation bumping of frequency, and liquid during bumping generation in pipe goes out along the strong eruption of tubule along with steam.Because the liquid of heating in test is usually containing various chemical reagent, the chemical reagent of this high temperature is abnormally dangerous, and the reliability as ebuillition of heated is not known where to begin especially.Now conventional is adopt heated sealed boiling, but because pressure in heating process is apparently higher than normal pressure, inconsistent with the heating condition in laboratory, the data recorded under data measured and laboratory normal pressure are variant.The method method of zeolite defervescence that what laboratory often adopted add is also inoperative in tubule.
Summary of the invention
In order to solve the problem, the utility model provides a kind of microtubule stabilization boiling device, is intended to realize the stable boiling process of the small volumes of liquids under normal pressure, prevents liquid bumping from spraying.
Above-mentioned purpose is achieved by the following technical solution:
A kind of microtubule stabilization boiling device, microtubule inwall is provided with feature concaveconvex structure, and microtubule outer wall is provided with dot interlace and is wrapped in the heating wire between dot interlace, is provided with lower end interface bottom microtubule, and lower end interface is provided with transition tubule.
Further, described feature concaveconvex structure is groove or depression.
Further, the groove width of described groove or the diameter of described depression are between 0.1 ~ 100 μm.
Further, described groove or depression are 1 ~ 1000/square centimeter in microtubule inwall distribution density.
Further, the internal diameter 0.5 ~ 3mm of described transition tubule.
Further, the internal diameter of described microtubule is 0.5 ~ 5cm.
When microtubule stabilization boiling device described in utilization carries out microtubule stabilization boiling, liquid enters microtubule from transition tubule, and the heating wire being wrapped in microtubule outer wall dot interlace heats microtubule; The feature concaveconvex structure of microtubule inwall and liquid comes into contact, carry out disturbance by the bubble produced to liquid and stir anti-bumping.
The beneficial effects of the utility model:
(1) the microtubule stabilization boiling device that provides of the utility model is by being provided with feature concaveconvex structure at microtubule inwall, feature concaveconvex structure and liquid comes into contact, contact portion always has precedence over other parts of liquid and produces bubble under the effect of feature structure, and continue to produce bubble in whole heating process, by the bubble produced, disturbance stirring is carried out to liquid, suppress the accumulation of superheated liquid in liquid, avoid bumping, make liquid all be in stable fluidized state in whole heating process.
(2) in the microtubule stabilization boiling device that the utility model provides, microtubule inwall is provided with feature concaveconvex structure, can continue to produce bubble in boiling process, prevents superheated liquid accumulation bumping; Outer wall is provided with dot interlace, is convenient to heating wire winding heating, homogeneous heating.
(3) the microtubule stabilization boiling device that the utility model provides can carry out at ambient pressure, and can not bumping, and boiling process is reliable and stable.
Accompanying drawing explanation
Fig. 1 is microtubule stabilization boiling device structural representation;
Fig. 2 is microtubule inboard wall groove structural representation;
Fig. 3 is microtubule inwall cave structure schematic diagram;
Fig. 4 is the microscope figure (amplifying 400 times) of microtubule inboard wall groove structure;
Fig. 5 is the microscope figure (amplifying 400 times) of microtubule inwall cave structure.
Wherein, 1, microtubule inwall; 2, microtubule outer wall; 3, dot interlace; 4, lower end interface; 5, transition tubule; 6, nut.
Detailed description of the invention
The technical solution of the utility model is described in detail below in conjunction with specific embodiment.
Figure 1 shows that a kind of microtubule stabilization boiling device that the utility model provides, microtubule inwall 1 is provided with feature concaveconvex structure, the heating wire that microtubule outer wall 2 is provided with dot interlace 3 and is wrapped between dot interlace 3, is provided with lower end interface 4 bottom microtubule, lower end interface 4 is provided with transition tubule 5.Described feature concaveconvex structure is groove or depression, as shown in Fig. 2 ~ 5.The groove width of described groove or the diameter of described depression are between 0.1 ~ 100 μm.Described groove or depression are 1 ~ 1000/square centimeter in microtubule inwall distribution density.Transition capillary inside diameter is between 0.5 ~ 3mm.Microtubule diameter 0.5 ~ 5cm.Microtubule can adopt quartz glass to make, corrosion resistance and good.The groove shown in Fig. 2 and Fig. 3 or depression comparison rule, in fact most cases is irregular, and effect of the present utility model and groove or depression whether rule onrelevant.
only sudden and violent principle of the present utility model:
According to basic characteristics more of the present utility model, do the following hypothesis: (1) microtubule caliber is thin, outer wall heating wire winding comparatively dense, can suppose that micro-liquid in pipe can both be heated fully, namely not because heating is insufficient occur that fluid temperature is uneven; (2) microtubule is perpendicular to horizontal plane; (3) micro-liquid in pipe is uniform liquid; (4) microtubule temperature almost identical (macroscopically show as identical, microcosmic upper part has small difference) is everywhere supposed.
The feature that feature concaveconvex structure need possess and function: the liquid in feature concaveconvex structure is not easy heat convection, more easily vaporize relative to the liquid of other parts and produce bubble, and be conducive to the growth of bubble, namely feature concaveconvex structure local heating is higher relative to other partially liq local heatings, heat flow density is larger.In order to realize these functions, require that feature uneven structure possesses following features: recess width or depression diameter are between 0.1 ~ 100 μm, and validity feature structure is 1 ~ 1000/square centimeter in microtubule inwall distribution density.The concrete structure of certain feature concaveconvex structure and liquid property (viscosity, specific heat capacity, vapourizing temperature and angle of wetting etc.) and mode of heating and intensity influence each other, and cooperatively interacting only have these three in real work in, it is sudden and violent effectively to stop.
The generation of bubble: start heating after being full of liquid bulk in (1) microtubule, just start due to reasons such as surface tension, part on-condensible gas is had in some feature concaveconvex structures, using these on-condensible gases as nucleate points, reach around in the liquid of boiling point and constantly have vaporizing liquid generation steam to be combined with nucleate points, promote that bubble is progressively grown in nucleate points, on the other hand owing to contacting with gas bottom depression, rate of heat transfer is lower than periphery, heat accumulation makes the high and periphery of temperature, thus promote that bubble expands further, bubble is grown in final nucleate points, and depart from feature depression and enter in liquid, (2) along with the generation of first bubble, because the on-condensible gas of surface tension in depression is all replaced by liquid, simultaneously owing to having isolated the liquid with top bottom part depression in the process of bubble growth, thus make the temperature opposing perimeter temperature bottom feature depression higher, form focus, after bubble parameters leaves, the liquid of bubble roof replaces bubble, these are close, reach boiling temperature or even overheated liquid directly contacts with focus, more easily vaporization produces nucleate points, the same then with (1) of Bubble Formation Process after nucleate points produce, (3) for the situation not having on-condensible gas in some feature concaveconvex structure, as the feature concaveconvex structure of groove-like, residual cleaning liquid etc. is had in the situation that aperture is larger etc. makes surface tension be not enough to support and feature concaveconvex structure, due to the liquid in feature concaveconvex structure relative to the liquid of other parts and the contact area of microtubule larger, therefore local heat flux density is produced larger, again because heat convection is less likely to occur the liquid bulk in feature concaveconvex structure, thus make the liquid thermal accumlation in feature concaveconvex structure, temperature raises, thus reach evaporation conditions prior to other parts of liquid and vaporize that (state before boiling can be assumed to be: macroscopically liquid entirety all reaches boiling temperature, microcosmic has small temperature contrast: in liquid column, create some superheated liquid groups, and superheated liquid group constantly changes under thermal convection current and heat exchange action---merge, division, grow up, reduce, liquid in feature concaveconvex structure has heat exchange and without thermal convection current, therefore the superheated liquid group of this part is relatively stable, and other portion temperature in temperature relative liquid are the highest, therefore this partially liq is vaporized at first and is produced minimum gas), produce a small amount of bog, simultaneously owing to having isolated bottom part depression in the process of bubble growth and overhead-liquid, thus make the temperature opposing perimeter temperature bottom feature depression higher, form focus, after bubble parameters leaves, the liquid of bubble roof replaces bubble, these are close, reach boiling temperature or even overheated liquid directly contacts with focus, more easily vaporization produces nucleate points, the same then with (2) of Bubble Formation Process after nucleate points produce.
The motion process of bubble is with only sudden and violent: the state when seething with excitement can be assumed to be: macroscopically liquid entirety all reaches boiling temperature, microcosmic has small temperature contrast: in liquid column, create some superheated liquid groups, and superheated liquid group constantly changes-merges, divides, grows up, reduces under thermal convection current and heat exchange action.When the excessive or superheated liquid group quantity that superheated liquid group grows up is too much, under small perturbation action, the all right violent vaporization of superheated liquid group produces a large amount of minute bubbles, minute bubbles Fast Growth expands (merging, further vaporization, expanded by heating etc.), final formation bumping, liquid enters condenser pipe and even sputters outside pipe under the effect of bumping.When the vaporizing liquid in feature concaveconvex structure produces bubble, although the liquid in liquid column has superheated liquid group, but quantity is insufficient, a large amount of minute bubbles can't be formed, at this moment move upward under the effect of buoyancy from the minute bubbles of the disengaging in feature concaveconvex structure, to the liquid around bubble by obviously perturbation action, thus make the superheated liquid group vaporization around bubble, discharge overheated heat, the gas that vaporization produces further promotes the growth of bubble, and when continuing heating and pressure reduces, bubble Fast Growth, because microtubule diameter is little, bubble can produce effective disturbance to the fluid column cross section of process very soon, thus eliminate superheated liquid through cross section, thus effectively suppress the accumulation of superheated liquid group in liquid column, the generation of effective suppression bumping, thus realize only sudden and violent.In heating process, continuous heating makes superheated liquid group continue to produce and grow up change, disinthibites so will constantly produce bubble, and wants inhibitory action to be greater than growth change, can ensure bumping not to occur in whole digestion process.Because the inhibitory action of bubble to fluid column upper end is greater than lower end, make the accumulation of lower end superheated liquid group stronger, relatively more easily produce bubble, so bubble point is also finally be stabilized in microtubule lower end, the accumulation that finally can effectively suppress the superheated liquid in whole liquid column to be rolled into a ball is grown up simultaneously.
the principle of porous surface augmentation of heat transfer and with difference of the present utility model
Porous surface augmentation of heat transfer is mainly used in strengthening the rate of heat transfer between heater and inside liquid to be heated.The general principle of porous surface augmentation of heat transfer: increase solid-liquid contact area, promotes convective heat transfer liquid near solid-liquid contact face, increases solid-liquid contact face heat transfer efficiency, is usually used in heating, field of radiating.
Similitude: be all that there is surface relief structure, and worked by this structure.
Difference: (1) target is different, and porous surface augmentation of heat transfer is to increase heat exchange efficiency, aperture can not be too small simultaneously, and to prevent bubble, and the topmost object of feature concaveconvex structure of the present utility model produces bubble, thus disturbance liquid avoids bumping; (2) structure is different, and the method, in order to increase heat exchange efficiency, increases surperficial heat convection, usually suppress the generation of bubble, therefore concaveconvex structure size is usually comparatively large, and in order to reduce surperficial heat convection in the utility model, promote the generation of bubble, therefore concaveconvex structure size is usually less; (3) principle is different, and the method is by concaveconvex structure, increases solid-liquid contact face, thus increases heat exchange efficiency, and the utility model is by concaveconvex structure, and first the liquid in concaveconvex structure vaporized generation bubble; (4) difference of material, the method generally adopts metal material, and generally adopts quartz in the utility model, and it is also variant that the difference of material determines concaveconvex structure processing method.
zeolite only sudden and violent principle and with difference of the present utility model
In laboratory is cleared up, usually adopt and add zeolite to suppress bumping, zeolite only sudden and violent general principle is, have much natural space in zeolite, and wherein have a lot of on-condensible gas, zeolite is in beaker bottom, in ebuillition of heated process, on-condensible gas expands in the form of bubbles out, enters in liquid, because zeolite is on heating surface, after zeolite is heated, temperature is also very high, liquid in space is also vaporized generation bubble, and bubble motion suppresses bumping, principle with the motion process of bubble in 1 with only sudden and violent.
Similitude: bubble motion produces disturbance, suppresses a large amount of liquid superheat, thus only sudden and violent.
Difference: (1) heating means are different, the method adopts bottom-heated, and zeolite is also sink to bottom, thus can work, and be heat on microtubule tube wall in the utility model, microtubule is vertically placed; (2) generation of bubble is different, and in the method, bubble has zeolite to produce, and in heater base, and is produce on microtubule tube wall in the utility model; (3) principle of bubble that produces of vaporizing liquid is different, and in the method, mainly superheated liquid enters in gap and vaporizes, and is that liquid enters in concaveconvex structure in the utility model, heat vaporized.Because zeolite sinks to bottom, can not the sudden and violent effect of start-stop in the utility model, because heating surface is tube wall instead of bottom in the utility model.
the processing method of feature concaveconvex structure in the utility model
(1) depression type feature structure.Direct employing quartz glass inside pipe wall frosting technology, forms a large amount of quartz sand at inner surface protruding, forms depression by projection.Certainly, the inwall that in this, way is worked it out, the depression ratio really worked is lower.When surface roughness is higher, effect is relatively better.
(2) fluted body feature structure.Adjustment heating voltage, makes heating wire micro-red, passes into cold water fast after milky white pipe is heated to high temperature in milky white pipe, making the tracheal wall near inwall break, forming fluted body feature structure by expanding with heat and contract with cold.Tracheal wall near inwall is fully broken, will ensure that there is violent difference variation milky white pipe inside.Repeat 2 ~ 5 times.
The effect of above-described embodiment is essentiality content of the present utility model is described, but does not limit protection domain of the present utility model with this.Those of ordinary skill in the art should be appreciated that and can modify to the technical solution of the utility model or equivalent replacement, and does not depart from essence and the protection domain of technical solutions of the utility model.
Claims (6)
1. a microtubule stabilization boiling device, is characterized in that: microtubule inwall is provided with feature concaveconvex structure, and microtubule outer wall is provided with dot interlace and is wrapped in the heating wire between dot interlace, is provided with lower end interface bottom microtubule, and lower end interface is provided with transition tubule.
2. microtubule stabilization boiling device according to claim 1, is characterized in that: described feature concaveconvex structure is groove or depression.
3. microtubule stabilization boiling device according to claim 2, is characterized in that: the groove width of described groove or the diameter of described depression are between 0.1 ~ 100 μm.
4. the microtubule stabilization boiling device according to Claims 2 or 3, is characterized in that: described groove or depression are 1 ~ 1000/square centimeter in microtubule inwall distribution density.
5. microtubule stabilization boiling device according to claim 1, is characterized in that: the internal diameter 0.5 ~ 3mm of described transition tubule.
6. microtubule stabilization boiling device according to claim 1, is characterized in that: the internal diameter of described microtubule is 0.5 ~ 5cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520977353.7U CN205164762U (en) | 2015-11-30 | 2015-11-30 | Stable device that boils of microtubule |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520977353.7U CN205164762U (en) | 2015-11-30 | 2015-11-30 | Stable device that boils of microtubule |
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| CN205164762U true CN205164762U (en) | 2016-04-20 |
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| CN201520977353.7U Withdrawn - After Issue CN205164762U (en) | 2015-11-30 | 2015-11-30 | Stable device that boils of microtubule |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105363504A (en) * | 2015-11-30 | 2016-03-02 | 江苏德林环保技术有限公司 | Microtube stabilizing ebullition method and device |
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- 2015-11-30 CN CN201520977353.7U patent/CN205164762U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105363504A (en) * | 2015-11-30 | 2016-03-02 | 江苏德林环保技术有限公司 | Microtube stabilizing ebullition method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160420 Effective date of abandoning: 20180109 |
|
| AV01 | Patent right actively abandoned |