CN102350182A - Highly efficient dehumidification steam-water separator - Google Patents
Highly efficient dehumidification steam-water separator Download PDFInfo
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- CN102350182A CN102350182A CN2011102014325A CN201110201432A CN102350182A CN 102350182 A CN102350182 A CN 102350182A CN 2011102014325 A CN2011102014325 A CN 2011102014325A CN 201110201432 A CN201110201432 A CN 201110201432A CN 102350182 A CN102350182 A CN 102350182A
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Abstract
The invention relates to a highly efficient dehumidification steam-water separator. The steam-water separator which has a main structure corrugated plate is characterized in that: the upwind dehumidification surface of the corrugated plate part is provided with a composite micro-nano structure, the composite micro-nano structure treats a hydrophobic material as a substrate, and a hydrophilic material is distributed on the hydrophobic substrate at intervals. The steam-water separator which utilizes a combined effect of characteristics of the hydrophilic surface and characteristics of the hydrophobic surface allows a liquid phase to be adsorbed from a steam-liquid mixed fluid through the hydrophilicity of the hydrophilic surface and makes the adsorbed liquid fast slide from the hydrophobic surface and not be film-formed through utilizing the unwetability of the hydrophobic surface. The steam-water separator which has a simple structure can be widely applied to a steam-water separator of a nuclear power steam turbine and a steam-water separator of a large scale air conditioner allows the steam-water separation efficiency of each unit length to be greatly improved without changing the original structure of a mechanism, so needs of the safe and highly efficient production of a large scale steam-water separator are satisfied.
Description
Technical field
The present invention relates to a kind of efficient dehumidifying steam-water separator, belong to steam turbine technology.
Background technology
In nuclear power station, heat power station, the caused water erosion problem of moist steam can not be ignored in the steam turbine.Particularly on the position of steam turbine last stage, can cause blade erosion, unit efficiency reduces.Utilization at present steam turbine dehumidifying technology comparatively widely is before the steam that low pressure (LP) cylinder comes out gets into reheater; Utilize water separator; The moisture that contains in the bigger steam of humidity that high pressure cylinder is come out separates; Its main version mainly contains: the woven wire formula; Corrugated plate dst, centrifugal flap type etc.
For the principle of multilayer corrugated plate isolating construction, be when cyclic steam gets between the corrugated plating, make steam flow rate reduce (being generally (3-5) m/s) and make carbonated drink separation.
The principle of centrifugal structure is that a large amount of moisture steam get into steam-water separator, therein with the centrifugal inclined motion that dips down; The moisture content of carrying secretly is separated owing to speed reduces; The separated liquid drain valve of flowing through is discharged, and the steam of dry cleansing is discharged from separator outlet.
The principle of wire mesh structure is to utilize steam through the multiple layer metal silk screen ingress filter of carrying secretly to be reached steam-water separation effect.
The dehumidifying of above method can both reach outlet mass dryness fraction about 98%, but because the unit length dehumidification rate is lower, causes the carbonated drink separating component excessive long, makes steam get into and produces a large amount of flow losses in the steam-water separator, makes part energy be wasted.
Summary of the invention
Problem to be solved by this invention provides a kind of efficient dehumidifying steam-water separator.This steam-water separator adopts traditional corrugated plating to arrange, but has changed the principle of conventional wave card copper or the carbonated drink separation of steel surface, adopts hydrophilic and hydrophobic composite micro-nano rice functional structure.
The technical scheme that the present invention adopts is:
A kind of efficient dehumidifying steam-water separator, primary structure is a corrugated plating, on the surface of dehumidifying down with the wind of corrugated plating parts, arranges composite micro-nano rice structure, and said composite micro-nano rice structure is substrate with the hydrophobic material, and the water wetted material compartment of terrain is distributed on the hydrophobic substrate.
In the above-mentioned micro nano structure, when contacting with water, the contact angle of hydrophobic material is (CA) >=95 °, and roll angle (SA) is 2 °～10 °, and the contact angle of water wetted material is 20 °～90 ° for (CA).
Described water wetted material is distributed on the hydrophobic substrate evenly and at intervals, and effect generally can be better.In the practical operation, in order to take into account effect and operability, spacing can be 1 ~ 3mm.
This invention utilizes the strong wetting characteristics of water wetted material and the compound synergy of nonwetting property of hydrophobic material, utilizes water wetted material from the vapour-liquid fluid-mixing, the drop of separation and polymerization liquid phase.When droplet congregating arrives a certain size, the character of hydrophobic surface makes drop be slipped to fast in the water storage tank, makes water-wetted surface from fluid-mixing, separate once more.
The present invention says the preparation of the composite micro-nano rice structure that is applied to the steam-water separator corrugated plating that relates to, and includes but are not limited to following method:
1. inlaying process
On hydrophobic surface, use mechanical means to be pressed into wherein water wetted material is equally spaced.
2. two go on foot the plasma chemistry methods
On the silicon chip of polishing, produce super-hydrophobic substrate earlier.Be sprayed on the polished silicon slice with the toluene solution of photoresist spinner (2000rpm), then in vacuum environment 90 the polybutadiene of 8% (w/v)
oC annealing one hour is got rid of the solute of embedding, at last at CF
4The gaseous environment ionic medium was handled one hour, promptly can obtain the advancing angle receding angle and be respectively 154
oWith 152
oSuper-hydrophobic substrate.Before the deposit hydrophilic layer, in super-hydrophobic substrate, cover the thick copper coin of 0.1mm of one deck machine drilling processing, tighten with bolt.Vapour deposition last layer hydrophilic substance is gone up on the surface more afterwards, at last filter screen is removed, the high efficiency that promptly can the obtain close and distant water spacer surface of catchmenting
3. self-assembling technique successively
At first on polished silicon slice, make a kind of polyelectrolyte multilayer film hydrophobic surface, its forward-reverse contact angle is respectively 172
oWith 169
oWith fixed pattern with 1% FITC-PAH injection of solution to the surface.Treat after the surface solution evaporation, use washed with de-ionized water.
Apparatus of the present invention are utilized the high collecting action of water wetted material for drop; And the easy disengaging property of hydrophobic material water; Both compound actions have reduced that the residual grade of liquid film is unfavorable for the vapor-liquid separation factor on the corrugated plating, have improved the dehumidification rate of corrugated plating on the unit are.This invention significantly improves dehumidification rate under the prerequisite that does not change existing corrugated plating steam-water separator structure.This steam-water separator corrugated plating effect on moisture extraction based on bionical composite micro-nano rice structure is excellent; Do not change existing steam turbine steam-water separator apparatus structure; Can be applied in the nuclear steam turbine unit widely, ultra (surpassing) critical Steam Turbine of heat power station, central air-conditioning etc. need in the device of vapor-liquid separation.
Description of drawings
The composite micro-nano rice body structure surface of Fig. 1 embodiment 1 preparation;
The local Electronic Speculum figure of the composite micro-nano rice body structure surface water wetted material of Fig. 2 embodiment 1 preparation.
The specific embodiment
Following embodiment only is the present invention is described and never limits the present invention.
Embodiment 1
Get the sheet copper style, specification 3cm * 3cm immersed it in wax under molten condition 2-3 minute.Taking-up is cleaned with ethanol after treating the nature cooling, and dries up with nitrogen; This moment, surface contact angle was 100 °, was spacing with 2mm, and (glass is water wetted material to inlay the glass microballoon that diameter is 0.15mm; Its contact angle is 25 °), use the water-bath of 50 degree to heat then 1-3 minute in the bottom.Serve as the experiment reference object with polish back smooth copper surface (70 ° of contact angles) and smooth wax surface (contact angle is at 95 °～100 °) simultaneously, carry out the carbonated drink separating experiment at the jet pipe that utilizes droplet generator and fan to form.Jet pipe bore 25mm, drop formation speed 0.05ml/s, diameter are about 10 μ m, blow to experiment surface to be measured with the speed of 1.5m/s.Test the alignment of centre of surface to be measured and jet pipe central horizontal, and be 45 °, and be placed on the connection high-precision electronic balance with the vertical angle that facings the wind.Behind 90min carbonated drink separating experiment, smooth copper surface is collected water 0.977g altogether, and water 2.662g is collected on smooth wax surface altogether, and water 3.23g is collected on close and distant water composite nano materials surface altogether.
Embodiment 2
Get the sheet copper style equally, specification 3cm * 3cm immersed it in wax under molten condition 2-3 minute.Taking-up is cleaned with ethanol after treating the nature cooling, and dries up with nitrogen; This moment, surface contact angle was 100 °, was spacing with 3mm, and (glass is water wetted material to inlay the glass microballoon that diameter is 0.15mm; Its contact angle is 25 °), use the water-bath of 50 degree to heat then 1-3 minute in the bottom.Serve as the experiment reference object with polish back smooth copper surface (70 ° of contact angles) and smooth wax surface (contact angle is at 95 °～100 °) simultaneously, carry out the carbonated drink separating experiment at the jet pipe that utilizes droplet generator and fan to form.Jet pipe bore 25mm, drop formation speed 0.05ml/s, diameter are about 10 μ m, blow to experiment surface to be measured with the speed of 3.5m/s.Test the alignment of centre of surface to be measured and jet pipe central horizontal, and be 45 °, and be placed on the connection high-precision electronic balance with the vertical angle that facings the wind.Behind 90min carbonated drink separating experiment, smooth copper surface is collected water 2.317g altogether, and water 3.769g is collected on smooth wax surface altogether, and water 5.131g is collected on close and distant water composite nano materials surface altogether.
Shown by above two experiment cases: in smooth copper surface, fine droplet is constantly growth on the copper surface, and then pools moisture film; On smooth wax surface, fine droplet forms the tiny globule, does not form moisture film, is not easy landing but drop is too for a short time; On close and distant water composite micro-nano rice surface, drop enlarges rapidly in the position of inlaying the hydrophilic glass pearl, and just reaches behind the certain size immediately landing from the surface.This explanation is on composite micro-nano rice surface, because the effect that carbonated drink is separated can be significantly strengthened in acting in conjunction hydrophilic and hydrophobic surface properties.
Claims (5)
1. efficient dehumidifying steam-water separator; Primary structure is a corrugated plating, it is characterized in that, on the surface of dehumidifying down with the wind of corrugated plating parts, arranges composite micro-nano rice structure; Said composite micro-nano rice structure is substrate with the hydrophobic material, and the water wetted material compartment of terrain is distributed on the hydrophobic substrate.
2. efficient dehumidifying steam-water separator according to claim 1 is characterized in that, when contacting with water, the contact angle of hydrophobic material is >=95 °, and roll angle is 2 °～10 °, and the contact angle of water wetted material is for being 20 °～90 °.
3. efficient dehumidifying steam-water separator according to claim 1 and 2 is characterized in that described water wetted material is distributed on the hydrophobic substrate evenly and at intervals.
4. efficient dehumidifying steam-water separator according to claim 1 and 2 is characterized in that the spacing of water wetted material is 1 ~ 3mm.
5. efficient dehumidifying steam-water separator according to claim 1 and 2 is characterized in that, said composite micro-nano rice structure is through the inlaying process preparation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110201432.5A CN102350182B (en) | 2011-07-19 | 2011-07-19 | Highly efficient dehumidification steam-water separator |
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| CN201110201432.5A CN102350182B (en) | 2011-07-19 | 2011-07-19 | Highly efficient dehumidification steam-water separator |
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| CN102350182A true CN102350182A (en) | 2012-02-15 |
| CN102350182B CN102350182B (en) | 2014-02-26 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973021A (en) * | 2016-05-25 | 2016-09-28 | 华北电力大学 | Water collecting device with gradient hydrophilic and hydrophobic performance and application thereof |
| CN106246248A (en) * | 2016-09-28 | 2016-12-21 | 中国船舶重工集团公司第七0四研究所 | Dehumidification structure in steam turbine ripple |
| CN112135679A (en) * | 2018-02-15 | 2020-12-25 | 唐纳森公司 | Filter element construction |
| US11806650B2 (en) | 2016-08-16 | 2023-11-07 | Donaldson Company, Inc. | Hydrocarbon fluid-water separation |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439235A (en) * | 2007-11-22 | 2009-05-27 | 东京毅力科创株式会社 | Gas-liquid separating device |
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2011
- 2011-07-19 CN CN201110201432.5A patent/CN102350182B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101439235A (en) * | 2007-11-22 | 2009-05-27 | 东京毅力科创株式会社 | Gas-liquid separating device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105973021A (en) * | 2016-05-25 | 2016-09-28 | 华北电力大学 | Water collecting device with gradient hydrophilic and hydrophobic performance and application thereof |
| CN105973021B (en) * | 2016-05-25 | 2017-12-29 | 华北电力大学 | A kind of water collector and application with gradient hydrophilicity and hydrophobicity |
| US11806650B2 (en) | 2016-08-16 | 2023-11-07 | Donaldson Company, Inc. | Hydrocarbon fluid-water separation |
| CN106246248A (en) * | 2016-09-28 | 2016-12-21 | 中国船舶重工集团公司第七0四研究所 | Dehumidification structure in steam turbine ripple |
| CN112135679A (en) * | 2018-02-15 | 2020-12-25 | 唐纳森公司 | Filter element construction |
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| CN102350182B (en) | 2014-02-26 |
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