CN1851376A - Band-tube type heat exchanger - Google Patents
Band-tube type heat exchanger Download PDFInfo
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- CN1851376A CN1851376A CN 200610019145 CN200610019145A CN1851376A CN 1851376 A CN1851376 A CN 1851376A CN 200610019145 CN200610019145 CN 200610019145 CN 200610019145 A CN200610019145 A CN 200610019145A CN 1851376 A CN1851376 A CN 1851376A
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Abstract
The invention relates to a new type working medium gas liquid phase heat exchanger that the thick liquid film wound not form while taking condensation, and would supply thin liquid film while vaporizing. The water side has the similar structure as plate type, and has high coefficients of heat transfers. The invention has high heat exchanging efficiency, and could save water consumption. It could be used in kinds of water source heat pump.
Description
Technical field
The present invention is a working medium liquid-gas phase transition class heat exchanger category, is a kind of band-tube type heat exchanger of novelty.
Technical background
This heat exchanger is a heat transmission equipment of realizing efficient liquid-gas phase transition.Existing relevant heat exchanger mainly contains two big class, i.e. shell-tube types and board-like.When they were used for the liquid-gas phase transition heat exchange, the shell and tube exchanger volume was big, the coefficient of heat transfer is low, water consumption is big; The plate type heat exchanger internal volume is very little, can not store worker quality liquid, and water channel stops up easily, and when using as evaporimeter, cold-producing medium distributes inequality can cause steam production to reduce.The present invention program overcomes or has improved above shortcoming, and the littler and heat exchange efficiency of pressure loss is higher when making the working medium liquid-gas phase transition, and allows the big and amount of conserving water of the water temperature difference of turnover heat exchanger.
Summary of the invention
The present invention is on the basis of existing technology, constructs the phase inversion hot body that a kind of plate pipe unit is combined as characteristics.Wherein each strake pipe unit is welded with the wave crest butt joint and with framework by two identical heat transfer corrugated sheets, every batten pipe of this strake pipe unit forms two gutters at two corrugated sheet joints, except that gutter, many fine " V " shape parallel rack grooves are arranged on the plate pipe internal surface, groove is a platform shape, and tooth is a right angled triangle.Multiple row plate pipe unit is arranged in the equidistant mode of adjacent two train wave faces and is constituted plate pipe unit combination.Between each strake pipe unit, the water plate that waveform is perpendicular, be mesh point contact is arranged, two outsides then are main pressing plate, inner wall surface thereof the has corrugated consistent with the water plate.The combination of n strake pipe unit is fixed by main pressing plate, and inserts n-1 piece water plate, and this combination just constitutes band-tube type phase inversion hot body.When being used for working medium condensation or evaporative phase-change heat exchange, the plate pipe is exactly the phase transition tube of working medium.
When using as the evaporative phase-change pipe, two gutter places install imbibition core thin slice additional in every pipe, and length of a film is identical with pipe range, and width is to the edge of groove face.The gutter of pipe and imbibition core thin slice constitute the capillary pump passage of working medium, communicate with all groove face.
The duty of phase transition tube is divided into two kinds of situations: when the condensation duty, formed condensed fluid on the heat-exchange surface in pipe, under steam pressure and liquid gravity effect, flow to the domatic outer rim of tooth, because tooth bar is shorter, the vertical gutter that is communicated with is very unimpeded, the time that condensed fluid is detained in phase transition tube is very short, can not form thick liquid film on heat-exchange surface, thereby very little to the phase change efficiency influence of follow-up steam; In evaporation during duty, add the imbibition core at two gutters of pipe, because imbibition chip has significantly increased the surface tension face, the capillary channel that gutter and imbibition core are constituted has bigger capillary pump hoisting power.Under low pressure suction and the capillary effect of groove face, the liquid of capillary channel flows into groove face, forms the constantly working medium liquid film of evaporation, thereby steam production is increased.
In the phase inversion hot body, the multiple row phase transition tube constitutes the phase transformation nest of tubes, makes working medium multidiameter delay work in the good nest of tubes of these interconvertibilities, thereby has reduced the pressure loss of working medium.
The water side is owing to the equidistant structure of its water channel, and water flow velocity can both form when changing in a big way and be forced to turbulent flow and little hydraulic diameter vortex, guarantees to have higher heat transference efficiency.Simultaneously, because the structure of phase inversion hot body allows that the existing board-like spacing of water channel gap ratio is big, thereby to the corresponding reduction of requirements in water quality.
The strong water plate of phase transition tube and pressure-bearing is because the strong point is many, and is very little to the influence of phase inversion hot body inner flow passage spacing when the pressure reduction of working medium-water is big, thereby can guarantee the high withstand voltage needs of large tracts of land.
Based on the phase transition tube structure, because it is little that effective heat-exchange surface is influenced by liquid refrigerant, need not keep certain heat exchange amount by the temperature difference that improves heat-transfer surface both sides working medium-water, thereby the Inlet and outlet water temperature difference of phase inversion hot body can be bigger, by the coherent signal of system water consumption regulated and control.
The working medium entrance cavity lid that is connected on the phase inversion hot body on (or down) end face is a flaring cavity.When being installed in the upper end, make the condensed steam uniform distribution enter the phase transformation nest of tubes; When being installed in the lower end, making evaporating liquid be full of in the chamber and make liquid level surpass the inlet of phase transformation nest of tubes.
The structure that is connected cold excessively (heat) device on the phase inversion hot body other end is: many root multi-layers heat exchanger tube is installed in the chamber of a cuboid, and its cavity and phase transformation nest of tubes sender property outlet join.Heat exchanger tube working medium liquid (or vapour) body after the phase transformation that flows outward in the rectangular body cavity, and carry out heat exchange with the heat exchange in-pipe flow, thus reach required cold excessively (or overheated) of working medium circulation.
No matter the flow direction of working medium is condensation or evaporation, is always entered by working medium entrance cavity lid, through the phase inversion hot body, flows out from cold excessively (heat) device again.
After the parts assembling that the working medium passage is arranged is finished, insert the water plate and water route, outside parts are installed, be i.e. water hub cavity lid and diversion cavity lid.
The flow direction of water is: the inlet by water hub cavity lid enters, and passes through the heat exchanger tube of cold (heat) device, enters phase inversion hot body water channel by the diversion cavity lid again, flows out from the outlet of water hub cavity lid at last.
The combination of working medium entrance cavity lid, phase inversion hot body, cold excessively (heat) device and water hub cavity lid, diversion cavity lid just constitutes band-tube type heat exchanger.The reverse flow in heat exchanger of working medium and water, heat exchanger is uprightly installed.
Band-tube type heat exchanger because its superiority energy-conservation, water saving will be widely used in the water resource heat pump of all size, especially can obtain good benefit in the utilization of ground source heat energy under the condition that has recycling water as heat extraction source and thermal source.
Description of drawings
Be example now, the assembly structure of each parts of band-tube type heat exchange body Fig. 1 is described with 4 tube sheet unit.Phase-change heat-exchanger 1 is to be arranged in the equidistant mode in corrugated by the plate pipe unit, inserts the water plate between each unit, and the outside is main pressing plate 2, is formed by connecting by two pairs of screw rods 3.Phase inversion hot body upper and lower end face connects working medium entrance cavity lid 4 and cold excessively (heat) device 5, and front and back sides connects water hub cavity lid 6 and diversion cavity lid 7.
Among plate pipe unit Fig. 2, two corrugated sheets 1 dock and weld with framework 2, weld is an obtuse triangle groove 6, the corrugated sheet joint is a gutter 3, except that gutter, the parallel curved tooth groove 4 of " V " shape is arranged down on the corrugated sheet internal face, account for 2/3rds of internal face, the gutter place installs imbibition chip 5 additional when evaporation is used.
Water plate Fig. 3 is formed by connecting by the stiffener 2 on corrugated sheet 1 and two ripple limits.
Fall the local amplification of the parallel curved tooth groove face of " V " shape as shown in Figure 4, and " V " clevis angle is 120 degree, and profile of tooth is a right angled triangle, bottom land wall thickness 0.30mm, the wide 0.38mm of bottom land, separation 0.55mm, average wall thickness 0.36mm.
The specific embodiment
One strake pipe unit is a basic module of forming the heat exchange body.It is made of with the stainless steel frame that plays the fixing seal effect through being processed into identical sinusoidal waveform plate two corrosion resistant stainless sheet steels that conduct heat.Corrugated sheet adopts low carbon stainless steel thin plate (grade of steel 00Cr17Ni14Mo2 etc.), thickness of slab 0.36mm (allow to change within the specific limits, following data together), the sinusoidal waveform plate that extrusion molding is the trough of belt face: wavelength 15mm, wave height 5mm is processed with down the parallel curved tooth groove of " V " shape on the interior corrugated, tooth is a right angled triangle, bottom land wall thickness 0.30mm, the wide 0.38mm of bottom land, separation 0.55mm, average wall thickness 0.36mm, " V " clevis angle is 120 degree, and the arc groove face accounts for 2/3 of corrugated.The wave crest line butt joint of two corrugated sheets, the arc groove face is relative, edges of boards and framework welded seal, a strake pipe of formation upper and lower opening.Every plate pipe pipe range 400mm, several 20 of every tubulation can and be managed the class serial component that number be processed into different heat exchange amount sizes by different pipe ranges.Plate inside pipe wall face forms two gutters in the contact position of two corrugated sheets, except that gutter then for falling " V " shape arc groove face.When using as the evaporative phase-change pipe, two gutter places install the imbibition core additional in each pipe, and available stainless steel thin slice is made.
The water plate is the pressure-containing member that constitutes water channel with the plate pipe, is processed into corrugated sheet with the thick aluminium sheet of the good hard of smooth surface bearing strength, and reinforces with stiffener on two ripple limits.Waveform is a sinusoidal, and wavelength is identical with the corrugated sheet of formation plate pipe with wave height, and thickness of slab is 5mm.The water plate inserts between each plate pipe unit, and forms, goes into aquaporin at the upper and lower of every block of water plate, and the width about passage between equidistant corrugated is that water plate thickness of slab adds twice wave height sum, highly is the twice of its width.Two outsides of plate pipe unit combination are main pressing plate, to constitute plate pipe outside water channel.
According to the size of required heat exchange amount, select several plate pipe unit assemblies of a certain class for use, arrange in the equidistant mode in corrugated, edge about these component frameworks is compressed (compressing place's encapsulation process) with a pair of main pressing plate by four screw rods.
Heat exchange body installed surface is up and down installed prefabricated cold excessively (heat) device and working medium entrance cavity lid respectively with the sealing of high pressure sealing bar, can carry out pressure test and leak detection to the working medium path after the water plate is supported in insertion.
Diversion cavity lid, delivery port side installation water hub cavity lid are installed in heat exchange body water inlet side at last and are sealed the detection of leaking again with sealing strip respectively.
Must guarantee during evaporator operation that medium level surpasses end entrance under the phase transition tube, the interior capillary pump of pipe is worked.
But regulation and control water flow velocity signal conveying end water temperature signal is gone into penstock or frequency modulation water pump with control.
Claims (8)
1. the phase inversion hot body of a band-tube type structure (Fig. 1 .1), it is characterized in that: constitute a strake pipe unit (Fig. 2) by two heat transfer corrugated sheets, multiple row plate pipe unit is arranged in the equidistant mode in corrugated, insert the artesian water plate (Fig. 3) that the corrugated is perpendicular, be netted contact between the unit, the outside is fixing with the interior corrugated main pressing plate consistent with the water plate (Fig. 1 .2), constitute water channel between water plate, main pressing plate and the plate pipe, leave out, go into aquaporin up and down.The plate pipe is the phase transition tube of working medium, and the heat exchange body is uprightly installed.
2. heat transfer corrugated sheet according to claim 1 (Fig. 2 .1) is characterized in that: many fine " V " shape parallel rack grooves (Fig. 2 .4) are arranged on the corrugated, and groove is a platform shape, and tooth is right angled triangle (Fig. 4), and alveolar surface accounts for 2/3rds of this corrugated.
3. a strake pipe unit according to claim 1, it is characterized in that: by two described heat transfer corrugated sheets of claim 2 with wave crest butt joint, groove face relatively, edges of boards and framework (Fig. 2 .2) constitute a strake pipe of upper and lower opening, the inherent joint formation of plate pipe gutter (Fig. 2 .3) combining limit groove 6 (Fig. 2 .6) welded seal.
4. according to claim 1 and 3 described plate pipes, it is characterized in that: the interior gutter place of all plate pipes installs imbibition core thin slice (Fig. 2 .5) additional when being used to evaporate work, and length of a film is identical with pipe range, and sheet is wide to the groove face edge.
5. water plate according to claim 1 (Fig. 3), it is characterized in that: be processed into corrugated sheet (Fig. 3 .1) with smooth surface, thicker light material that pressure-bearing is good, waveform, wavelength and wave height are consistent with the described heat transfer corrugated sheet of claim 2, and two ripple limits reinforce with stiffener (Fig. 3 .2).
6. phase inversion hot body according to claim 1 is characterized in that: (or down) end is connected with working medium entrance cavity lid (Fig. 1 .4) on the heat exchange body, and its structure is a flaring cavity.
7. phase inversion hot body according to claim 1 is characterized in that: following (or the on) end at the heat exchange body was connected with cold (heat) device (Fig. 1 .5), and its structure is that many root multi-layers heat exchanger tube is installed in the chamber of a cuboid.
8. phase inversion hot body according to claim 1 is characterized in that: regulate inflow with the outlet water temperature signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610019145 CN1851376A (en) | 2006-05-26 | 2006-05-26 | Band-tube type heat exchanger |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610019145 CN1851376A (en) | 2006-05-26 | 2006-05-26 | Band-tube type heat exchanger |
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| CN1851376A true CN1851376A (en) | 2006-10-25 |
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| CN 200610019145 Pending CN1851376A (en) | 2006-05-26 | 2006-05-26 | Band-tube type heat exchanger |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782273A (en) * | 2010-03-26 | 2010-07-21 | 华南理工大学 | Heat transfer enhanced heat pump phase-change heat storage device |
| CN103791741A (en) * | 2014-01-20 | 2014-05-14 | 同济大学 | Phase transition plate heat exchanger |
| CN105466251A (en) * | 2015-03-03 | 2016-04-06 | 何六珠 | Modular tube sheet heat exchanger and heat exchange method thereof |
| CN113883925A (en) * | 2021-10-18 | 2022-01-04 | 西安交通大学 | Uniform liquid film evaporation heat exchanger and method |
-
2006
- 2006-05-26 CN CN 200610019145 patent/CN1851376A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782273A (en) * | 2010-03-26 | 2010-07-21 | 华南理工大学 | Heat transfer enhanced heat pump phase-change heat storage device |
| CN103791741A (en) * | 2014-01-20 | 2014-05-14 | 同济大学 | Phase transition plate heat exchanger |
| CN103791741B (en) * | 2014-01-20 | 2016-08-17 | 同济大学 | A kind of phase transformation plate type heat exchanger |
| CN105466251A (en) * | 2015-03-03 | 2016-04-06 | 何六珠 | Modular tube sheet heat exchanger and heat exchange method thereof |
| CN113883925A (en) * | 2021-10-18 | 2022-01-04 | 西安交通大学 | Uniform liquid film evaporation heat exchanger and method |
| CN113883925B (en) * | 2021-10-18 | 2022-08-09 | 西安交通大学 | Uniform liquid film evaporation heat exchanger and method |
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