CN112461013A - Step-by-step condensation efficient anti-scaling evaporative condenser - Google Patents
Step-by-step condensation efficient anti-scaling evaporative condenser Download PDFInfo
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- CN112461013A CN112461013A CN202011290131.XA CN202011290131A CN112461013A CN 112461013 A CN112461013 A CN 112461013A CN 202011290131 A CN202011290131 A CN 202011290131A CN 112461013 A CN112461013 A CN 112461013A
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- condenser
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- stage condenser
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B7/00—Combinations of two or more condensers, e.g. provision of reserve condenser
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28B—STEAM OR VAPOUR CONDENSERS
- F28B9/00—Auxiliary systems, arrangements, or devices
- F28B9/04—Auxiliary systems, arrangements, or devices for feeding, collecting, and storing cooling water or other cooling liquid
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a step-by-step condensation efficient anti-scaling evaporative condenser, which is characterized in that a first-stage condenser, a second-stage condenser and a third-stage condenser are arranged in a box body, the front end and the rear end of each stage of condenser are respectively connected with an inlet end collecting pipe and an outlet end collecting pipe, and the front-stage outlet end collecting pipe is connected with the rear-stage inlet end collecting pipe through a connecting pipe. Middle flowing back has been implemented at the preceding one-level condenser end, has realized the condensation step by step to in having introduced the latter one-level condenser gas of preceding one-level condenser exhaust, be favorable to the flow of the interior fluid of condenser, reduced the flow resistance, strengthened the heat transfer effect. The super-hydrophobic high-heat-conductivity coating is coated on the inner surface or the inner surface of the gas medium flow channel plate of the condenser, so that the conversion from film-shaped condensation to bead-shaped condensation is accelerated, the condensation speed is increased, the condensation effect is enhanced, and the hydrophobic anti-corrosion coating is coated on the outer surface of the plate and the outer surface of the pipe, so that the surface of the condenser is covered, and the formation of scale is prevented.
Description
Technical Field
The invention relates to a step-by-step condensation efficient anti-scaling evaporative condenser, and belongs to the field of efficient heat exchange energy-saving equipment.
Background
At present, gaseous condensation and condensation heat transfer mainly has two forms: one is film condensation; the other is bead (drop) condensation. Bead condensation, the condensation coefficient of which is more than 10 times of that of film condensation. In general, the condensation of gaseous medium on the surface is membrane-shaped condensation, and the liquid membrane on the condensation surface becomes the maximum thermal resistance in the condensation process; the gaseous medium is mixed with the liquid in the condensation process, the flow resistance of the liquid medium influences the condensation speed of the gaseous medium, and the medium can flow backwards under severe conditions; the evaporative condenser water and air are open, and the temperature rise of water temperature is easy to scale on the metal surface and corrode the metal surface in severe cases.
The existing evaporative condenser does not solve the technical problems, and the working efficiency of the evaporative condenser is reduced or the condenser can not work normally due to membranous condensation, increased vapor-liquid mixing resistance and scaling or corrosion on the metal surface.
Disclosure of Invention
The invention provides a step-by-step condensation efficient anti-scaling evaporative condenser which is high in condensate discharging speed, high in condensation efficiency and long in service life.
In order to achieve the purpose, the invention adopts the following technical scheme.
The method comprises the following steps: a step-by-step liquid discharge efficient anti-scaling evaporative condenser comprises a first-stage condenser, a second-stage condenser and a third-stage condenser, wherein each stage of condenser is provided with an inlet end collecting pipe and an outlet end collecting pipe which are arranged in an up-and-down arrangement mode; the front stage leading-out end collecting pipe is connected with the rear stage inlet end collecting pipe through a connecting pipe, gas discharged by the front stage condenser is introduced into the next stage condenser, and the condensate is communicated with the liquid leading-out pipe through a liquid seal.
The specific technical scheme is as follows: the utility model provides a condensation is high-efficient prevents scale deposit evaporative condenser step by step which characterized in that: the condenser is used for condensing gaseous media into liquid media and comprises a primary condenser (4), a secondary condenser (3) or a tertiary condenser (2), wherein the lower end of the condenser is provided with an air inlet (8), and the upper end of the condenser is provided with an axial flow fan (18); the front end of the first-stage condenser (4) is connected with an inlet end header pipe (13), the first-stage condenser (4) and the second-stage condenser (3) as well as the second-stage condenser (3) and the third-stage condenser (2) are connected by connecting pipes (12) and are used for introducing gas exhausted by the front-stage condenser into the rear-stage condenser; and the liquid of the first-stage condenser (4), the second-stage condenser (3) and the third-stage condenser (2) is respectively communicated with a liquid lead-out pipe (10) through a liquid seal (9), so that the liquid condensed by the condensers can be discharged quickly.
The water pump is connected with the water collecting tank, and the spray pipe is arranged above the condenser in the box body; and a filler positioned between the axial flow fan and the spray pipe is also arranged in the box body.
Or, the condenser also comprises an auxiliary condenser, a leading-out end header of the last stage condenser is connected with a liquid storage device, and the liquid storage device is connected with the auxiliary condenser through an air outlet pipe and a liquid return pipe.
The inner channel or the inner channel of each stage of condenser plate is coated with a super-hydrophobic coating with a contact angle of more than 150 degrees, and the outer channel or the outer channel of each stage of condenser plate is coated with a hydrophobic coating with a contact angle of 90-120 degrees.
Compared with the prior art, the technical scheme adopted by the invention has the following beneficial effects by way of example and not limitation:
(1) the step-by-step liquid drainage system is adopted, gas discharged by the front-stage condenser is introduced into the rear-stage condenser, so that the flow of fluid in the heat exchange pipeline is facilitated, the discharge of a liquid film in the heat exchange pipeline is accelerated, the flow resistance of a medium is reduced, and the condensation heat exchange effect is enhanced; (2) the super-hydrophobic coating with a contact angle of more than 150 degrees is coated on the channel in the plate or the tube, so that the film-shaped condensation is converted into bead-shaped condensation, and the condensation speed is improved; (3) the hydrophobic coating with a contact angle of 90-120 degrees is coated outside the plate or outside the pipe and has a thermal conductivity of 30W/(m)2K) and nano inorganic materials with strong corrosion resistance, wherein the coating can cover the whole heat exchange surface, can prevent the formation of scale and even shortens the contact time of a corrosive medium and the heat exchange surface.
Drawings
FIG. 1 is a schematic diagram of the structure and operation of the present invention;
FIG. 2 is a connection diagram of progressive drain pipes;
FIG. 3 is a schematic of coating addition;
description of the reference numerals
1 box body, 2 three-stage condenser, 3 second-stage condenser, 4 first-stage condenser, 5 water pipe, 6 water pump, 7 water collecting tank, 8 air inlet, 9 liquid seal, 10 liquid outlet pipe, 11 liquid reservoir, 12 connecting pipe, 13 first-stage outlet end collecting pipe, 13 ' first-stage inlet end collecting pipe, 14 second-stage outlet end collecting pipe, 14 ' second-stage inlet end collecting pipe, 15 third-stage outlet end collecting pipe, 15 ' third-stage inlet end collecting pipe, 16 spray pipe, 17 filler, 18 axial flow fan, 19 liquid return pipe, 20 air outlet pipe, 21 auxiliary condenser, 22 super-hydrophobic high heat-conducting coating, 23 hydrophobic coating
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
It should be noted that the embodiments of the present invention have better practicability, and are not intended to limit the present invention in any form. The technical features or combinations of technical features described in the embodiments of the present invention should not be considered as being isolated, and they may be combined with each other to achieve a better technical effect.
The drawings of the present invention are in simplified form and are not to scale, but rather are provided for convenience and clarity in describing the embodiments of the present invention and are not intended to limit the scope of the embodiments of the present invention. Any modification of the structure, change of the ratio or adjustment of the size of the structure should fall within the scope of the present disclosure without affecting the effect and the purpose of the present disclosure. And the same numbers appearing in the various drawings of the invention represent the same features or elements and may be used in different embodiments.
As shown in figure 1, the invention provides a stepwise condensation efficient anti-scaling evaporative condenser, which comprises a primary condenser 4, a secondary condenser 3 and a tertiary condenser 2, wherein the lower end of the condenser is provided with an air inlet 8, and the upper end of the condenser is provided with an axial flow fan 18; the front end of the first-stage condenser 4 is connected with an inlet end header 13, the first-stage condenser 4 is connected with a second-stage condenser 3, and the second-stage condenser 3 is connected with a third-stage condenser 2 through a connecting pipe 12 and used for introducing gas discharged by the first-stage condenser into a next-stage condenser; and the liquid of the first-stage condenser 4, the second-stage condenser 3 and the third-stage condenser 2 is respectively communicated with a liquid lead-out pipe 10 through a liquid seal 9, so that the liquid condensed by the condensers can be discharged quickly.
The condenser also comprises a water collecting tank 7 positioned below the box body 1, a water pump 6 connected with the water collecting tank 7 and a spray pipe 16 arranged above the condenser in the box body 1; the box body 1 is also internally provided with a filler 17 positioned between the axial flow fan 18 and the spray pipe 16.
As shown in fig. 2, the outlet header of the last stage condenser can also be directly connected to the accumulator 11, in which case an auxiliary condenser 21 is required, and the accumulator 11 is provided with an outlet pipe 20 and a return pipe 19 which are connected to the auxiliary condenser 21, respectively. The gas in the accumulator flows back to the accumulator 11 after being liquefied by the auxiliary condenser 21.
As shown in fig. 3, a superhydrophobic coating having a contact angle exceeding 150 ° is coated in the condenser plate or in the condensing medium flow channel inside the tube.
The contact angle between condenser plates or between the condenser tubes is 120 DEG, and the thermal conductivity coefficient is 30W/(m)2K) hydrophobic coating of nano inorganic material with strong corrosion resistance.
The condenser in the box body 1 of the invention can be three stages as shown in figure 1, or more than three stages, and the front-back connection relationship of adjacent stages is the same as that of the adjacent stages.
Compared with the prior art, the technical scheme adopted by the invention has the following beneficial effects by way of example and not limitation:
(1) the invention discloses a step-by-step condensation efficient anti-scaling evaporative condenser, which is characterized in that a first-stage condenser, a second-stage condenser and a third-stage condenser are arranged in a box body, the front end and the rear end of each stage of condenser are respectively connected with an inlet end collecting pipe and an outlet end collecting pipe, and the front-stage outlet end collecting pipe is connected with the rear-stage inlet end collecting pipe through a connecting pipe. Middle flowing back has been implemented at the preceding one-level condenser end, has realized the condensation step by step to in having introduced the latter one-level condenser gas of preceding one-level condenser exhaust, be favorable to the flow of the interior fluid of condenser, reduced the flow resistance, strengthened the heat transfer effect. That is, a step-by-step liquid discharge system is adopted, gas discharged by a front-stage condenser is introduced into a rear-stage condenser, so that the flow of fluid in a heat exchange pipeline is facilitated, the discharge of a liquid film in the heat exchange pipeline is accelerated, the flow resistance of a medium is reduced, and the condensation heat exchange effect is enhanced;
(2) the super-hydrophobic high-heat-conductivity coating is coated on the inner surface or the inner surface of the gas medium flow channel plate of the condenser, so that the conversion from film-shaped condensation to bead-shaped condensation is accelerated, the condensation speed is increased, the condensation effect is enhanced, and the hydrophobic anti-corrosion coating is coated on the outer surface of the plate and the outer surface of the pipe, so that the surface of the condenser is covered, and the formation of scale is prevented. That is, the super-hydrophobic coating with a contact angle of more than 150 degrees is coated on the channel in the plate or the tube, so that the film-shaped condensation is converted into bead-shaped condensation, and the condensation speed is improved;
(3) the hydrophobic coating with a contact angle of 120 degrees is coated outside the plate or outside the tube and has a thermal conductivity of 30W/(m)2K) and nano inorganic materials with strong corrosion resistance, wherein the coating can cover the whole heat exchange surface, can prevent the formation of scale and even shortens the contact time of a corrosive medium and the heat exchange surface.
The above-mentioned is the highly effective anti-scaling evaporative condenser with step-by-step condensation of the present invention, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a condensation is high-efficient prevents scale deposit evaporative condenser step by step which characterized in that: the condenser is used for condensing gaseous media into liquid media and comprises a primary condenser (4), a secondary condenser (3) or a tertiary condenser (2), wherein the lower end of the condenser is provided with an air inlet (8), and the upper end of the condenser is provided with an axial flow fan (18);
the front end of the first-stage condenser (4) is connected with an inlet end header pipe (13), the first-stage condenser (4) and the second-stage condenser (3) as well as the second-stage condenser (3) and the third-stage condenser (2) are connected by connecting pipes (12) and are used for introducing gas exhausted by the front-stage condenser into the rear-stage condenser;
and the liquid of the first-stage condenser (4), the second-stage condenser (3) and the third-stage condenser (2) is respectively communicated with a liquid lead-out pipe (10) through a liquid seal (9), so that the liquid condensed by the condensers can be discharged quickly.
2. The progressive condensation high efficiency anti-scaling evaporative condenser system of claim 1, wherein: the condenser also comprises a water collecting tank (7) positioned below the box body (1), a water pump (6) connected with the water collecting tank (7) and a spray pipe (16) arranged above the condenser in the box body (1); and a filler (17) positioned between the axial flow fan (18) and the spray pipe (16) is also arranged in the box body (1).
3. The progressive condensation high efficiency anti-scaling evaporative condenser system of claim 1 or 2, wherein: the first-stage condenser (4), the second-stage condenser (3) and the third-stage condenser (2) are plate type, tubular type or elliptical type.
4. The fractional condensation high efficiency anti-scaling evaporative condenser system of claim 1 or 2, wherein: the gas medium passes through the plate inner channel or the tube inner channel, and the spraying water and the air pass through the plate or the tube inner channel.
5. The progressive condensation high efficiency anti-scaling evaporative condenser system of claim 1 or 2, wherein: the inner surface of the gaseous medium channel is coated with a super-hydrophobic high-heat-conductivity coating (22), and the outer surface of the plate and the outer surface of the pipe are coated with a hydrophobic coating (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011290131.XA CN112461013A (en) | 2020-11-17 | 2020-11-17 | Step-by-step condensation efficient anti-scaling evaporative condenser |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011290131.XA CN112461013A (en) | 2020-11-17 | 2020-11-17 | Step-by-step condensation efficient anti-scaling evaporative condenser |
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| CN112461013A true CN112461013A (en) | 2021-03-09 |
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| CN202011290131.XA Pending CN112461013A (en) | 2020-11-17 | 2020-11-17 | Step-by-step condensation efficient anti-scaling evaporative condenser |
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Citations (10)
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| US4601933A (en) * | 1983-10-19 | 1986-07-22 | Yoshiro Nakamura | Heat transfer promoters and method of using the same |
| CN201852506U (en) * | 2010-10-25 | 2011-06-01 | 卜艳 | Heat exchange tube and device for reinforcing heat transfer of tube pass fluid |
| CN102257345A (en) * | 2008-12-19 | 2011-11-23 | 西门子公司 | Condenser tube having increased hydrophobicity, production method and use thereof |
| CN104132557A (en) * | 2014-07-30 | 2014-11-05 | 烟台珈群高效节能设备有限公司 | Intermediate liquid discharge type efficient condensation system |
| CN203964693U (en) * | 2014-07-30 | 2014-11-26 | 烟台珈群高效节能设备有限公司 | High-efficiency condensation device |
| CN203964695U (en) * | 2014-07-30 | 2014-11-26 | 烟台珈群高效节能设备有限公司 | Middle discharge opeing formula condensing unit |
| CN104748603A (en) * | 2015-03-23 | 2015-07-01 | 徐翔 | Method for improving heat exchange effect of heat exchanger with steam as heat source |
| CN108571913A (en) * | 2017-03-07 | 2018-09-25 | 中国科学院工程热物理研究所 | A kind of super-hydrophobic condensing surface and preparation method thereof |
| CN208887442U (en) * | 2018-07-16 | 2019-05-21 | 连云港佑丰电力设备有限公司 | A kind of heat exchange tube of condenser with super-hydrophobic coat |
| CN111895685A (en) * | 2020-08-18 | 2020-11-06 | 同济大学 | Heat exchange tube and dry evaporator |
-
2020
- 2020-11-17 CN CN202011290131.XA patent/CN112461013A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4601933A (en) * | 1983-10-19 | 1986-07-22 | Yoshiro Nakamura | Heat transfer promoters and method of using the same |
| CN102257345A (en) * | 2008-12-19 | 2011-11-23 | 西门子公司 | Condenser tube having increased hydrophobicity, production method and use thereof |
| CN201852506U (en) * | 2010-10-25 | 2011-06-01 | 卜艳 | Heat exchange tube and device for reinforcing heat transfer of tube pass fluid |
| CN104132557A (en) * | 2014-07-30 | 2014-11-05 | 烟台珈群高效节能设备有限公司 | Intermediate liquid discharge type efficient condensation system |
| CN203964693U (en) * | 2014-07-30 | 2014-11-26 | 烟台珈群高效节能设备有限公司 | High-efficiency condensation device |
| CN203964695U (en) * | 2014-07-30 | 2014-11-26 | 烟台珈群高效节能设备有限公司 | Middle discharge opeing formula condensing unit |
| CN104748603A (en) * | 2015-03-23 | 2015-07-01 | 徐翔 | Method for improving heat exchange effect of heat exchanger with steam as heat source |
| CN108571913A (en) * | 2017-03-07 | 2018-09-25 | 中国科学院工程热物理研究所 | A kind of super-hydrophobic condensing surface and preparation method thereof |
| CN208887442U (en) * | 2018-07-16 | 2019-05-21 | 连云港佑丰电力设备有限公司 | A kind of heat exchange tube of condenser with super-hydrophobic coat |
| CN111895685A (en) * | 2020-08-18 | 2020-11-06 | 同济大学 | Heat exchange tube and dry evaporator |
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