CN1667338A - Liquid filled compact tube bundle evaporating heat exchanger - Google Patents
Liquid filled compact tube bundle evaporating heat exchanger Download PDFInfo
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- CN1667338A CN1667338A CN 200510024942 CN200510024942A CN1667338A CN 1667338 A CN1667338 A CN 1667338A CN 200510024942 CN200510024942 CN 200510024942 CN 200510024942 A CN200510024942 A CN 200510024942A CN 1667338 A CN1667338 A CN 1667338A
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- liquid
- heat exchanger
- reserve tank
- liquid reserve
- evaporating heat
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Abstract
The invention relates to a full liquid compact restrain vaporizing heat exchanger that adopts a special restrain array structure to increase the efficiency of vaporization heat exchanging. It is made up of liquid feeding machine, liquid storing trunk, and tubes in liquid storing trunk. The liquid feeding machine connects to the top of the liquid storing trunk and the steam outlet is set at the top of the liquid storing trunk; liquid outlet is set at the bottom of the liquid storing trunk and the tubes in the liquid storing trunk are immerged in the liquid. Every next two tubes has 2mm clearance and the clearance between the vertical tubes is less than 2mm. The invention sharply increased the heat exchanging performance.
Description
Technical field
The present invention relates to a kind of liquid filled compact tube bundle evaporating heat exchanger, this evaporating heat exchanger can improve evaporation and heat-exchange efficient effectively by a kind of special tube bank arrangement architecture.
Background technology
The consumption that reduces energy and resource is key subjects in production and application project field.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 the film-lowering type evaporating heat exchanger, and another kind of is full liquid 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.
The primary structure of film-lowering type evaporating heat exchanger comprises fluid supplier, tube bank, liquid reserve tank and four parts of the circulatory system.During work, liquid enters liquid reserve tank from the fluid supplier tube bank of flowing through after its surface heat exchanging, and then flows into fluid supplier and recycle.The film-lowering type evaporating heat exchanger mainly is used in some heat transmission equipments that utilize low-quality heat.(Experimental study of a falling-film evaporative heat exchangercomposed of compact and high-efficiency horizontal tube banks; Liu Zhenhua, Zhang Tong; Thermal power engineering the 19th phase of March in 2004; P160～162.) characteristics of the type heat exchanger are: the working medium flow outside pipe is little, under the situation about having a narrow range of temperature between tube wall and working medium, and 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 this type heat exchanger needs the complicated liquid feed device of a cover, and, 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.
The evaporating heat exchanger of another type relative with the film-lowering type evaporating heat exchanger is full liquid type evaporating heat exchanger.Full liquid type evaporating heat exchanger is mainly used in the situation of high heat, the high degree of superheat.Its basic form is exactly that horizontal tube bundle all is placed in the saturated liquid.Compare with the film-lowering type evaporating heat exchanger, it is much simple that the structure of full liquid type evaporating heat exchanger is wanted.Yet, can produce boiling heat transfer in order to make generating surface, 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, the full liquid type evaporating heat exchanger that uses is because tube pitch is bigger at present, and tube surface can not produce boiling, so heat exchange efficiency is very low.If enhanced heat exchange makes it to produce nucleate boiling, general method is to use various special reinforcement tube banks.So, make that not only equipment cost increases considerably, and heat-transfer pipe is difficult to also clean.
Summary of the invention
The objective of the invention is to provides a kind of liquid filled compact tube bundle evaporating heat exchanger of new structure at above the deficiencies in the prior art, simple and compact for structure, can strong boiling phenomenon take place under the condition of the low temperature difference, improves heat exchange property.
For realizing such purpose, the present invention adopts a kind of special tube bank arrangement architecture to improve evaporation and heat-exchange efficient.Evaporating heat exchanger is mainly by fluid supplier, the pipe of laying in liquid reserve tank, the case is formed, and fluid supplier is communicated with liquid reserve tank from the top of liquid reserve tank, and steam (vapor) outlet is arranged on the top of liquid reserve tank, liquid outlet is arranged on the bottom of liquid reserve tank, and the pipe of the inner compact arrangement of liquid reserve tank is immersed in the liquid.Architectural feature of the present invention mainly is to restrain arrangement mode, and adjacent two tubulation bundles keep the optimal spacing of a 2mm, and simultaneously, each pipe between same row vertical tube bundle closely contacts, and perhaps keeps its spacing less than 2mm.
During operation, restrain whole being immersed in the cold fluid, hot fluid is from pipe intermediate flow mistake.According to boiling enhanced heat-transfer mechanism, pipe is arranged by this way, easily produce boiling heat transfer and two kinds of enhanced heat exchanges of gas-liquid two-phase flow disturbance in the narrow slit space in the pipe outside, full liquid type evaporating heat exchanger use general plain tube still can be at low wall temperature, hang down that (the heat flow density scope is about 10 under the heat flow density condition
3～10
5KW/m
2Between) produce boiling heat transfer phenomena, thus exchange capability of heat can have been strengthened greatly.According to experiment, this novel full liquid 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 liquid feed device of the present invention is simple, and compact conformation does not increase the equipment processing cost, and also strong boiling phenomenon can take place under the condition of the low temperature difference, thereby makes heat exchange property improve greatly.In addition, heat exchanger processing of the present invention is easy to make, and arrangement mode is simple, realizes easily, and is easy to clean.
Description of drawings
Fig. 1 is evaporating heat exchanger tube bank contact-type arrangement architecture schematic diagram of the present invention.
Fig. 2 restrains little spacing type arrangement architecture schematic diagram for evaporating heat exchanger of the present invention.
Among Fig. 1, Fig. 2,1 is steam (vapor) outlet, and 2 is fluid supplier, and 3 is fluid, and 4 is pipe, and 5 is liquid reserve tank, and 6 is liquid outlet.
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 and Figure 2, mainly by fluid supplier 2, the pipe of laying in liquid reserve tank 5, the case 4 is formed, fluid supplier 2 is communicated with liquid reserve tank 5 from the top of liquid reserve tank 5, steam (vapor) outlet 1 is arranged on the top of liquid reserve tank 5, liquid outlet 6 is arranged on the bottom of liquid reserve tank 5, and the pipe 4 of liquid reserve tank 5 inner compact arrangement is immersed in the liquid.
Architectural feature of the present invention mainly is to restrain arrangement mode, and each pipe between same row vertical tube bundle closely contacts, and as shown in Figure 1, each pipe way distance between perhaps same row vertical tube bundle is less than 2mm, as shown in Figure 2.Simultaneously, adjacent two tubulation bundles keep a very little optimum distance, the general desirable 2mm of spacing.
In an embodiment of the present invention, the external diameter of all pipes 4 is 18mm in the tube bank, and the pipe in the whole tube bank is arranged in the in-line arrangement mode.Up and down between the pipe closely contact or spacing less than 1～2mm, about distance between the tube bank be 2mm.The adjustment of distance can be adjusted by the both sides tube sheet between the pipe.Whole tube bank is immersed among the liquid.In heat flow density is 10
3KW/m
2In, the heat exchanger of this embodiment is than common full liquid type evaporating heat exchanger, and the coefficient of heat transfer can increase by 2 times.
Claims (1)
1, a kind of liquid filled compact tube bundle evaporating heat exchanger, by fluid supplier (2), the pipe of laying in liquid reserve tank (5), the case (4) is formed, it is characterized in that fluid supplier (2) is communicated with liquid reserve tank (5) from the top of liquid reserve tank (5), steam (vapor) outlet (1) is arranged on the top of liquid reserve tank (5), liquid outlet (6) is arranged on the bottom of liquid reserve tank (5), the pipe (4) of the inner compact arrangement of liquid reserve tank (5) is immersed in the liquid, each pipe (4) between same row vertical tube bundle closely contacts or keeps spacing less than 2mm, and adjacent two tubulation bundles distance is 2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510024942 CN1667338A (en) | 2005-04-07 | 2005-04-07 | Liquid filled compact tube bundle evaporating heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510024942 CN1667338A (en) | 2005-04-07 | 2005-04-07 | Liquid filled compact tube bundle evaporating heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1667338A true CN1667338A (en) | 2005-09-14 |
Family
ID=35038567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510024942 Pending CN1667338A (en) | 2005-04-07 | 2005-04-07 | Liquid filled compact tube bundle evaporating heat exchanger |
Country Status (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443852C (en) * | 2006-10-19 | 2008-12-17 | 上海交通大学 | Liquid-supplementing type low-temperature boiling heat exchanger with stable level indication |
| CN101281002B (en) * | 2008-01-08 | 2011-04-27 | 王全龄 | High-efficiency full solution type coupled heat exchanger |
| CN103517967A (en) * | 2011-07-14 | 2014-01-15 | 三菱重工业株式会社 | Gas cooler, gasification furnace, and integrated gasification combined cycle device for carbon-containing fuel |
-
2005
- 2005-04-07 CN CN 200510024942 patent/CN1667338A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100443852C (en) * | 2006-10-19 | 2008-12-17 | 上海交通大学 | Liquid-supplementing type low-temperature boiling heat exchanger with stable level indication |
| CN101281002B (en) * | 2008-01-08 | 2011-04-27 | 王全龄 | High-efficiency full solution type coupled heat exchanger |
| CN103517967A (en) * | 2011-07-14 | 2014-01-15 | 三菱重工业株式会社 | Gas cooler, gasification furnace, and integrated gasification combined cycle device for carbon-containing fuel |
| CN103517967B (en) * | 2011-07-14 | 2016-01-20 | 三菱日立电力系统株式会社 | Gas cooler, gasification furnace and carbonaceous fuel gasifying combined generating device |
| US9541289B2 (en) | 2011-07-14 | 2017-01-10 | Mitsubishi Hitachi Power Systems, Ltd. | Gas cooler, gasification furnace, and integrated gasification combined cycle for carbon-containing fuel |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |