CN1773205A - Falling-film rolling reinforced pipe column evaporating heat exchanger - Google Patents
Falling-film rolling reinforced pipe column evaporating heat exchanger Download PDFInfo
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- CN1773205A CN1773205A CN 200510110201 CN200510110201A CN1773205A CN 1773205 A CN1773205 A CN 1773205A CN 200510110201 CN200510110201 CN 200510110201 CN 200510110201 A CN200510110201 A CN 200510110201A CN 1773205 A CN1773205 A CN 1773205A
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- heat exchanger
- heat exchange
- finish rolling
- tube bank
- evaporating heat
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Abstract
The present invention relates to a falling film type stitch-reinforced tube bundle evaporation heat exchanger. It is characterized by that it adopts stitch-reinforced tube bundle to raise evaporation heat exchange efficiency. The evaporation heat-exchanger mainly is composed of high-level liquid-supplying tank, condenser, stitch-reinforced tube bundle arranged in the heat exchanged tank body and liquid storage tank. Said invention also provides the concrete structure of the tube bundle and stitch-reinforced tube, also provides the connection mode of all the above-mentioned components.
Description
Technical field
The present invention relates to a kind of heat exchanger, relate in particular to a kind of falling-film rolling reinforced pipe column evaporating heat exchanger.This evaporating heat exchanger adopts the finish rolling hardening pipe, can improve evaporation and heat-exchange efficient effectively.
Background technology
The consumption that how to reduce energy and resource is key subjects in production and application project field always.In the heat-exchanging process process of a lot of thermal technologies and chemical industry, a kind of effective ways that cut down the consumption of energy are exactly in the middle of the carrying out of process, reduce the driving temperature difference of system's operation.
A kind of heat-exchange apparatus the most frequently used in the industry is exactly an evaporating heat exchanger, and the heat exchange efficiency that how to improve evaporating heat exchanger then is the important problem that the designer studies always.At present, the evaporating heat exchanger of using in the industry mainly contains two big classes, and a class is full liquid type evaporating heat exchanger, and another kind of is the film-lowering type evaporating heat exchanger.In sea water desalting equipment, solar absorption cooler, chemical industry equipment, this heat exchanger of two types all is in daily use.
Full liquid type evaporating heat exchanger is mainly used in the situation of high heat, the high degree of superheat.Its citation form is exactly that horizontal tube bundle all is placed in the saturated liquid.The advantage of full liquid type evaporating heat exchanger is that it is simple in structure.Yet in order to make generating surface can produce boiling heat transfer, the needed temperature difference of this type heat exchanger is bigger.In the middle of sea water desalting equipment that utilizes low-quality heat and heat exchanger, because wall surface temperature and heat flow are all very low, and the tube pitch of full liquid type evaporating heat exchanger is bigger, so tube surface generally can not produce boiling, heat exchange efficiency is very low.
The evaporating heat exchanger of the another kind of type relative with full liquid type evaporating heat exchanger is the film-lowering type evaporating heat exchanger.The film-lowering type evaporating heat exchanger mainly is used in some heat transmission equipments that utilize low-quality heat.The primary structure of film-lowering type evaporating heat exchanger comprises high-order liquid supply box, condenser, tube bank, heat exchange casing, liquid reserve tank and six parts of the circulatory system.During work, liquid enters liquid reserve tank from the tube bank of flowing through of high-order liquid supply box after its surface heat exchanging, and then flows into high-order liquid supply box through the circulatory system and recycle.The characteristics of the type heat exchanger are: under the situation about having a narrow range of temperature that little, tube wall of working medium flow outside pipe and working medium are asked, its coefficient of heat transfer is but very big; And the influence of the variation heat exchanging coefficient of working medium flow and thermic load is very little, the operating condition quite stable.But, in the middle of the film-lowering type evaporating heat exchanger, can between tube bank, flow in order to guarantee fluid, the spacing between the tube and tube must be enough big, and this just makes whole heat exchanger volume increase.
Summary of the invention
The objective of the invention is to provides a kind of falling-film rolling reinforced pipe column evaporating heat exchanger of new structure at above the deficiencies in the prior art.The evaporating heat exchanger of this novel finish rolling hardening tube bank is compared with original film-lowering type evaporating heat exchanger, and heat exchange property improves greatly, thereby can be so that the design volume of heat exchanger reduces greatly.
For realizing such purpose, the present invention adopts a kind of special finish rolling hardening to restrain to improve evaporation and heat-exchange efficient.The film-lowering type evaporating heat exchanger mainly is made up of high-order liquid supply box, condenser, liquid reserve tank, heat exchange casing and the finish rolling hardening tube bank that is arranged in the heat exchange box house.High-order liquid supply box connects the heat exchange casing from top, condenser is arranged on the top of heat exchange casing, and the bottom of liquid reserve tank is provided with liquid outlet.Enter liquid reserve tank after the finish rolling hardening tube bank surface heat exchanging of liquid working substance in the heat exchange casing.The finish rolling hardening pipe that adopts during architectural feature of the present invention mainly is to restrain.This finish rolling hardening pipe adopts common machined into to form, and the external diameter of pipe is 18mm, and internal diameter is 12mm, after the roll extrusion, forms cone tank one by one at whole tube surface, and cone tank bottom surface internal diameter is 0.4mm, and external diameter is 0.7mm, the groove depth 0.6mm of cone tank.
During operation, hot fluid is from finish rolling hardening tube bank intermediate flow mistake, and cold fluid flows through from finish rolling hardening tube bank surface.According to boiling enhanced heat-transfer mechanism, this special finish rolling hardening pipe is adopted in tube bank, in the areola one by one of finish rolling hardening tube-surface, produce boiling heat transfer and two kinds of enhanced heat exchanges of gas-liquid two-phase flow disturbance easily, even (the heat flow density scope is about 10 under low wall temperature, low heat flow density condition
3～10
5KW/m
2Between) also can produce boiling heat transfer phenomena, thus enhanced heat exchange performance greatly.Experiment shows that this new-type finish rolling hardening tube bank film-lowering type evaporating heat exchanger can both effectively increase evaporation and heat-exchange efficient for water and these two kinds of working medium of freon, and its heat exchange efficiency improves 1～2 times than common evaporating heat exchanger.
Evaporating heat exchanger volume of the present invention is little, and the processing and fabricating of finish rolling hardening pipe is simple.Compare with original evaporating heat exchanger, do not increase processing cost basically.Also strong boiling phenomenon can take place, thereby make heat exchange property improve greatly under the condition of the low temperature difference.
Description of drawings
Fig. 1 is the structural representation of film-lowering type evaporating heat exchanger of the present invention.
Among Fig. 1,1 is inlet, and 2 is high-order liquid supply box, and 3 is condenser, and 4 are the finish rolling hardening tube bank, and 5 are the heat exchange casing, and 6 is liquid reserve tank, and 7 is liquid outlet.
Fig. 2 is the schematic diagram of finish rolling hardening tube-surface structure among the present invention.
Among Fig. 2, a is the distribution photo of finish rolling hardening tube-surface cone tank, and b is the profile of finish rolling hardening pipe, has provided caliber size, and c is the partial enlarged drawing of finish rolling hardening pipe cone tank physical dimension.
The specific embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is further described.
Evaporating heat exchanger structure of the present invention as shown in Figure 1, mainly by high-order liquid supply box 2, condenser 3, liquid reserve tank 6, heat exchange casing 5 and the finish rolling hardening tube bank 4 that is arranged in heat exchange casing 5 inside are formed, high-order liquid supply box 2 is communicated with heat exchange casing 5 from the top of heat exchange casing 5, condenser 3 is arranged on the top of heat exchange casing 5, and the bottom of liquid reserve tank 6 is provided with liquid outlet 7.
The finish rolling hardening tube bank 4 that architectural feature in the evaporating heat exchanger of the present invention mainly is to be adopted, Fig. 2 has provided the structure chart of finish rolling hardening pipe.Shown in Fig. 2 b, the external diameter of this finish rolling hardening pipe is 18mm, and internal diameter is 12mm, adopts common machined into, forms cone tank one by one at whole tube surface.After the roll extrusion, the cone tank of formation is shown in Fig. 2 c, and cone tank bottom surface internal diameter is 0.4mm, and external diameter is 0.7mm, the groove depth 0.6mm of cone tank.The distribution photo of finish rolling hardening tube-surface cone tank is shown in Fig. 2 a, and 7 cone tanks evenly distribute in the spacing of about 5mm.
In an embodiment of the present invention, the external diameter of all pipes is 18mm in the finish rolling hardening tube bank 4.In heat flow density is 10
3KW/m
2In, the heat exchanger of this embodiment is than common film-lowering type evaporating heat exchanger, and the coefficient of heat transfer can increase by 1～2 times.
Claims (1)
1, a kind of falling-film rolling reinforced pipe column evaporating heat exchanger, by high-order liquid supply box (2), condenser (3), liquid reserve tank (6), heat exchange casing (5) and be arranged in the inner tube bank (4) of heat exchange casing (5) and form, high-order liquid supply box (2) is communicated with heat exchange casing (5) from the top of heat exchange casing (5), condenser (3) is arranged on the top of heat exchange casing (5), the bottom of liquid reserve tank (6) is provided with liquid outlet (7), it is characterized in that described tube bank (4) is finish rolling hardening tube bank (4), the external diameter of the pipe that adopts is 18mm in the finish rolling hardening tube bank (4), internal diameter is 12mm, form cone tank one by one at whole tube surface through rolling and processing, cone tank bottom surface internal diameter is 0.4mm, external diameter is 0.7mm, the groove depth 0.6mm of cone tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101102018A CN100350209C (en) | 2005-11-10 | 2005-11-10 | Falling-film rolling reinforced pipe column evaporating heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101102018A CN100350209C (en) | 2005-11-10 | 2005-11-10 | Falling-film rolling reinforced pipe column evaporating heat exchanger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1773205A true CN1773205A (en) | 2006-05-17 |
| CN100350209C CN100350209C (en) | 2007-11-21 |
Family
ID=36760283
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101102018A Expired - Fee Related CN100350209C (en) | 2005-11-10 | 2005-11-10 | Falling-film rolling reinforced pipe column evaporating heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100350209C (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4857144A (en) * | 1988-09-02 | 1989-08-15 | Hanover Research Corporation | Apparatus for improved top feed distribution for falling film evaporator |
| FI19991797A (en) * | 1999-06-21 | 2000-12-21 | Keeran Corp Nv | A support stand for a heat exchanger and a vaporizer intended to be mounted on the same |
| SE517739E (en) * | 2000-11-22 | 2009-03-03 | Metso Power Ab | Process in the manufacture of liquids, for example, black liquor from cellulose boiling, containing solids and solutes |
| DE10135716A1 (en) * | 2001-07-21 | 2003-02-06 | Basf Ag | Falling film evaporator system for distillative mixture separation of e.g. vitamin E acetate from high- and low-boiling substances, comprises one or more heat exchangers integrated directly into evaporator vapor chamber |
-
2005
- 2005-11-10 CN CNB2005101102018A patent/CN100350209C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN100350209C (en) | 2007-11-21 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071121 Termination date: 20101110 |