CN105797410B - A kind of multichannel extratubal falling film liquid distributor and heat-exchange apparatus - Google Patents
A kind of multichannel extratubal falling film liquid distributor and heat-exchange apparatus Download PDFInfo
- Publication number
- CN105797410B CN105797410B CN201610232554.3A CN201610232554A CN105797410B CN 105797410 B CN105797410 B CN 105797410B CN 201610232554 A CN201610232554 A CN 201610232554A CN 105797410 B CN105797410 B CN 105797410B
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- liquid
- film
- drain
- tooth
- multichannel
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/22—Evaporating by bringing a thin layer of the liquid into contact with a heated surface
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
Abstract
The invention provides a kind of multichannel extratubal falling film liquid distributor and heat-exchange apparatus, multichannel extratubal falling film liquid distributor has convex shoulder, liquid can be even into each spout hole, and the drain tooth through each spout hole forms liquid film in each falling liquid film pipe outer wall, convex shoulder serves the effect to liquid liquid separation so that liquid can be evenly distributed to each film supplying tube；Convex shoulder is connected with drain tooth, and drain tooth plays a part of uniform liquid separation to each film supplying tube, and liquid reaches falling liquid film pipe outer wall along drain tooth, and uniform and stable liquid film is formed in falling liquid film pipe outer wall along liquid main flow road；The liquid distributor also has settlement action concurrently, and dregs can discharge along liquid main flow road in liquid, prevents that dregs block fluid passage in liquid.
Description
Technical field
The present invention relates to technical field of heat exchange, more particularly to a kind of multichannel extratubal falling film liquid distributor and heat exchange to set
It is standby.
Background technology
Falling liquid film technology is widely used in inhaling because it has the advantages that mass transfer force is big, heat transfer coefficient is high and energy consumption is small
The operations such as receipts, evaporation, cooling, vacuum distillation.And can falling liquid film technology play its advantage in above-mentioned field and largely take
It is certainly whether uniform and stable in cloth liquid.The effect of liquid distributor is exactly that can be formed after passing liquid through liquid distributor in falling liquid film tube wall
Uniform liquid film, and it continuously can excessively be arrived to whole falling liquid film tube wall.Whether the structure of liquid distributor is reasonable, directly influences
The distribution situation of liquid film, and then have influence on falling-film tower heat transfer, the efficiency of mass transfer.
More typical falling liquid film liquid distributor mainly includes following several types in the prior art：
1st, overflow type distributor：It common are zigzag overfall weir type overflow distributor, tangential direction drilling hole type overflow point
Cloth device and shaped grooved overflow distributor, such liquid distributor machining accuracy, installation accuracy require high, and passage is blocked up compared with little Yi by soil
Plug, it is impossible to realize that liquid is evenly distributed to the function of all film supplying tubes；
2nd, plug-type distributor：It common are plough groove type plug distributor, cone type plug distributor, thin-tube type plug point
Cloth device and hollow ball plug distributor, such liquid distributor are the gaps formed between plug and tube wall using pipe top
Make liquid film forming, greatly, easily blocking, installation and repairing are inconvenient for the flow resistance of plug-type distributor, it is impossible to realize liquid average mark
It is fitted on the function of all film supplying tubes；
3rd, porous template distributor：Such liquid distributor installs the foraminate distribution grid of polylith band, liquid warp above tube sheet
To cross baffle plate and distribution grid effect is finally evenly distributed to the purpose that tube wall surrounding reaches cloth liquid, this kind of structure of distributor is simple, but
It is that sheet metal consumption is more, later maintenance has difficulties.
The content of the invention
(1) technical problems to be solved
In order to solve above mentioned problem existing for prior art, the invention provides a kind of multichannel extratubal falling film liquid distributor and
Heat-exchange apparatus.
(2) technical scheme
The invention provides a kind of multichannel extratubal falling film liquid distributor, and it is arranged on the heat-exchange apparatus with film supplying tube
Interior, it includes a catch tray 2, and the catch tray 2 offers overflow hole array, and the overflow hole array includes N circle spout holes, often
Circle spout hole includes M spout hole 5；Along the surrounding of each spout hole, an annular is provided with a surface of the catch tray
Convex shoulder 1, the convex shoulder 1 gradually swells along the direction close to spout hole and is connected with drain mechanism；Into heat-exchange apparatus shell
Internal liquid, uniform and stable liquid film is formed in falling liquid film pipe outer wall through the catch tray, convex shoulder and drain mechanism, wherein 1≤
N、M≤100。
Preferably, the drain mechanism includes K drain tooth 3, and drain tooth is from the top of convex shoulder to opposite with convex shoulder protuberance
Direction tilt extension, the size that the bottom of drain tooth is surrounded matches with film supplying tube outer wall dimension, wherein, 8≤K≤20.
Preferably, the K drain tooth 3 is divided equally along convex shoulder and is distributed.
Preferably, the drain tooth 3 is extended with being tilted with axis in 20 °~30 ° of angle, between adjacent drain tooth 3
Angle is 30 °.
Preferably, the drain tooth 3 is triangle arc plate, the size and film supplying tube that the crown in drain bottom of the tooth portion is surrounded
Outer wall dimension matches.
Preferably, the drain tooth 3 is trapezoidal circular arc piece, outside the size and film supplying tube that the tooth side in drain bottom of the tooth portion is surrounded
Wall size matches.
Preferably, the convex shoulder 1, catch tray 2 and drain tooth 3 are integrated, and are process by stainless steel plate.
Preferably, the catch tray 2 is circular discs, and the spout hole 5 is circular port, and the convex shoulder 1 is cirque structure.
Present invention also offers a kind of heat-exchange apparatus, and it includes any of the above-described kind of multichannel extratubal falling film liquid distributor, its
In, the film supplying tube 4 of heat-exchange apparatus passes through the spout hole 5 of the multichannel extratubal falling film liquid distributor, falling liquid film pipe outer wall and drain
Bottom of the tooth end is brought into close contact, and catch tray edge and the welding of heat-exchange apparatus inner walls are tight, the backlash and falling liquid film of drain tooth
Liquid main flow road is formed between pipe outer wall.
Preferably, the heat-exchange apparatus is vertical type evaporator, vertical absorber or vertical generator.
(3) beneficial effect
It can be seen from the above technical proposal that a kind of multichannel extratubal falling film liquid distributor and the heat-exchange apparatus tool of the present invention
There is following beneficial effect：
(1) multichannel extratubal falling film liquid distributor has convex shoulder, and liquid can overflow even into each spout hole, and through each
The drain tooth of discharge orifice forms liquid film in each falling liquid film pipe outer wall, and convex shoulder serves the effect to liquid liquid separation so that liquid can
To be evenly distributed to each film supplying tube；
(2) convex shoulder is connected with drain tooth, and drain tooth plays a part of uniform liquid separation to each film supplying tube, and liquid is along drain tooth
Falling liquid film pipe outer wall is reached, and uniform and stable liquid film is formed in falling liquid film pipe outer wall along liquid main flow road；
(3) liquid distributor also has settlement action concurrently, and dregs can discharge along liquid main flow road in liquid, prevent dregs in liquid
Block fluid passage.
Brief description of the drawings
Fig. 1 is the side view schematic three dimensional views of the multichannel extratubal falling film liquid distributor of the embodiment of the present invention；
Fig. 2 is the vertical view schematic three dimensional views of the multichannel extratubal falling film liquid distributor of the embodiment of the present invention；
Fig. 3 is top view, side view and the cuing open along A-A directions of the multichannel extratubal falling film liquid distributor of the embodiment of the present invention
View；
Fig. 4 is another top view of the multichannel extratubal falling film liquid distributor of the embodiment of the present invention.
【Symbol description】
1- convex shoulders；2- catch trays；3- drain teeth；4- film supplying tubes；5- spout holes.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, below in conjunction with specific embodiment, and reference
Accompanying drawing, the present invention is described in more detail.
Referring to Fig. 1 to Fig. 4, first embodiment of the invention provides a kind of multichannel extratubal falling film liquid distributor, and it includes one
Catch tray 2, the catch tray 2 offer overflow hole array, and the overflow hole array includes N circle spout holes, and often enclosing spout hole includes M
Spout hole 5, wherein 1≤N, M≤100.In Fig. 1 into Fig. 3, the N and M take 1, and in Fig. 4, the N takes 2, and the M of first lap takes
1, the M of the second circle takes 6.
Preferably, the catch tray 2 is circular discs.
Along the surrounding of each spout hole, be provided with the convex shoulder 1 of an annular on a surface of catch tray, the convex shoulder 1 along by
Gradually swell in the direction of nearly spout hole.
Preferably, the convex shoulder 1 is coaxially disposed with spout hole 5 or axis misalignment certain distance is set；The chi of the convex shoulder
Very little to be matched with the size of spout hole, the size of convex shoulder internal diameter can be equal to, less than or greater than spout hole size；The spout hole 5
For circular port, the convex shoulder 1 is cirque structure.
K drain tooth 3 tilts extension from the top of convex shoulder to the direction opposite with convex shoulder protuberance, and the bottom of drain tooth is enclosed
Into size matched with film supplying tube outer wall dimension, wherein, 8≤K≤20.In Fig. 1 into Fig. 4, the K takes 12.
Preferably, K drain tooth 3, which can be divided equally, is distributed, can also uneven distribution；The drain tooth 3 to be in axis
20 °~30 ° of angle tilts extension；Angle between adjacent drain tooth 3 is 30 °；The drain tooth 3 is triangle arc plate,
The size that the crown in drain bottom of the tooth portion is surrounded matches with film supplying tube outer wall dimension；The drain tooth 3 is trapezoidal circular arc piece, drain
The size that the tooth side in bottom of the tooth portion is surrounded matches with film supplying tube outer wall dimension.
Preferably, the convex shoulder 1, catch tray 2 and drain tooth 3 are integrated, and are process by stainless steel plate.
The multichannel extratubal falling film liquid distributor of first embodiment of the invention, heat-exchange apparatus is installed on by its in the following manner：
The film supplying tube 4 of heat-exchange apparatus is passed through into corresponding spout hole 5, falling liquid film pipe outer wall is brought into close contact with drain bottom of the tooth end, catch tray
Edge and the welding of heat-exchange apparatus inner walls are tight, to ensure that liquid will not be by seepage herein, the backlash of drain tooth
Liquid main flow road is formed between falling liquid film pipe outer wall.When heat-exchange apparatus works, liquid enters in the housing of heat-exchange apparatus,
It is not to flow to falling liquid film pipe outer wall immediately, but is first gathered on catch tray, liquid level constantly rises on catch tray, when liquid level surpasses
When crossing the height of convex shoulder, liquid can be even into each spout hole, and the drain tooth through each spout hole is in each film supplying tube
Outer wall forms liquid film, and convex shoulder serves the effect to liquid liquid separation；Meanwhile liquid flows along drain tooth, drain tooth is to each drop
Membrane tube plays a part of uniform liquid separation, and liquid reaches falling liquid film pipe outer wall along drain tooth, and along liquid main flow road in falling liquid film pipe outer wall
Form uniform and stable liquid film；The liquid distributor also has settlement action concurrently, and dregs can discharge along liquid main flow road in liquid, prevent liquid
Dregs block fluid passage in body.
Second embodiment of the invention provides a kind of heat-exchange apparatus, and it is included outside the multi-channel tube of above-mentioned first embodiment
Falling liquid film liquid distributor, wherein, the film supplying tube 4 of heat-exchange apparatus passes through spout hole 5, and falling liquid film pipe outer wall is closely pasted with drain bottom of the tooth end
Close, catch tray edge and the welding of heat-exchange apparatus inner walls are tight, shape between the backlash and falling liquid film pipe outer wall of drain tooth
Into liquid main flow road.
Preferably, the heat-exchange apparatus is vertical type evaporator, vertical absorber or vertical generator.
So far, the present embodiment is described in detail combined accompanying drawing.According to above description, those skilled in the art
There should be clear understanding to the multichannel extratubal falling film liquid distributor of the present invention.
It should be noted that in accompanying drawing or specification text, the implementation that does not illustrate or describe is affiliated technology
Form known to a person of ordinary skill in the art, is not described in detail in field.In addition, above-mentioned definition to each element and not only limiting
Various concrete structures, shape or the mode mentioned in embodiment, those of ordinary skill in the art can be carried out simply more to it
Change or replace, such as：
(1) convex shoulder and drain tooth can also select other structures；
(2) direction term mentioned in embodiment, such as " on ", " under ", "front", "rear", "left", "right" etc., only it is ginseng
The direction of accompanying drawing is examined, is not used for limiting the scope of the invention；
(3) consideration that above-described embodiment can be based on design and reliability, the collocation that is mixed with each other uses or and other embodiment
Mix and match uses, i.e., the technical characteristic in different embodiments can freely form more embodiments.
In summary, a kind of multichannel extratubal falling film liquid distributor and heat-exchange apparatus of the invention, when heat-exchange apparatus work
When making, liquid enters in the housing of heat-exchange apparatus, is not to flow to falling liquid film pipe outer wall immediately, but is first gathered on catch tray,
Liquid level constantly rises on catch tray, and when liquid level exceedes the height of convex shoulder, liquid can be even into each spout hole, and passes through
The drain tooth of each spout hole forms liquid film in each falling liquid film pipe outer wall, and convex shoulder serves the effect to liquid liquid separation；Meanwhile
Liquid flows along drain tooth, and drain tooth plays a part of uniform liquid separation to each film supplying tube, and liquid reaches film supplying tube along drain tooth
Outer wall, and uniform and stable liquid film is formed in falling liquid film pipe outer wall along liquid main flow road；The liquid distributor also has settlement action, liquid concurrently
Middle dregs can discharge along liquid main flow road, prevent that dregs block fluid passage in liquid.
Particular embodiments described above, the purpose of the present invention, technical scheme and beneficial effect are carried out further in detail
Describe in detail it is bright, should be understood that the foregoing is only the present invention specific embodiment, be not intended to limit the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution and improvements done etc., it should be included in the guarantor of the present invention
Within the scope of shield.
Claims (10)
- A kind of 1. multichannel extratubal falling film liquid distributor, it is characterised in that it is arranged in the heat-exchange apparatus with film supplying tube, its Including a catch tray (2), the catch tray (2) offers overflow hole array, and the overflow hole array includes N circle spout holes, often Circle spout hole includes M spout hole (5)；Along the surrounding of each spout hole, an annular convex shoulder (1), the convex shoulder are provided with a surface of the catch tray (1) gradually swelled along the direction of close spout hole and be connected with drain mechanism；Liquid into heat-exchange apparatus housing, formed in falling liquid film pipe outer wall through the catch tray, convex shoulder and drain mechanism The liquid film of even stabilization, wherein 1≤N, M≤100.
- 2. multichannel extratubal falling film liquid distributor as claimed in claim 1, it is characterised in that the drain mechanism includes K and led Liquid tooth (3), drain tooth tilt extension from the top of convex shoulder to the direction opposite with convex shoulder protuberance, what the bottom of drain tooth was surrounded Size matches with film supplying tube outer wall dimension, wherein, 8≤K≤20.
- 3. multichannel extratubal falling film liquid distributor as claimed in claim 2, it is characterised in that the K drain tooth (3) is along convex shoulder Respectively it is distributed.
- 4. multichannel extratubal falling film liquid distributor as claimed in claim 2, it is characterised in that the drain tooth (3) with axis Tilt and extend in 20 °~30 ° of angles, the angle between adjacent drain tooth (3) is 30 °.
- 5. multichannel extratubal falling film liquid distributor as claimed in claim 2, it is characterised in that the drain tooth (3) is triangle Arc plate, the size that the crown in drain bottom of the tooth portion is surrounded match with film supplying tube outer wall dimension.
- 6. multichannel extratubal falling film liquid distributor as claimed in claim 2, it is characterised in that the drain tooth (3) is trapezoidal circle Arcs, the size that the tooth side in drain bottom of the tooth portion is surrounded match with film supplying tube outer wall dimension.
- 7. multichannel extratubal falling film liquid distributor as claimed in claim 2, it is characterised in that the convex shoulder (1), catch tray (2) It is integrated with drain tooth (3), is process by stainless steel plate.
- 8. multichannel extratubal falling film liquid distributor as claimed in claim 1, it is characterised in that the catch tray (2) is circular discs, The spout hole (5) is circular port, and the convex shoulder (1) is cirque structure.
- 9. a kind of heat-exchange apparatus, it is characterised in that it includes more logical described in any one of claim 1 to 8 claim Road extratubal falling film liquid distributor, wherein, the film supplying tube (4) of heat-exchange apparatus passes through the overflow of the multichannel extratubal falling film liquid distributor Hole (5), falling liquid film pipe outer wall are brought into close contact with drain bottom of the tooth end, and catch tray edge and the welding of heat-exchange apparatus inner walls are tight It is close, liquid main flow road is formed between the backlash and falling liquid film pipe outer wall of drain tooth.
- 10. heat-exchange apparatus as claimed in claim 9, it is characterised in that the heat-exchange apparatus is vertical type evaporator, vertical Absorber or vertical generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610232554.3A CN105797410B (en) | 2016-04-14 | 2016-04-14 | A kind of multichannel extratubal falling film liquid distributor and heat-exchange apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610232554.3A CN105797410B (en) | 2016-04-14 | 2016-04-14 | A kind of multichannel extratubal falling film liquid distributor and heat-exchange apparatus |
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| Publication Number | Publication Date |
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| CN105797410A CN105797410A (en) | 2016-07-27 |
| CN105797410B true CN105797410B (en) | 2018-02-16 |
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| CN201610232554.3A Active CN105797410B (en) | 2016-04-14 | 2016-04-14 | A kind of multichannel extratubal falling film liquid distributor and heat-exchange apparatus |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766390B (en) * | 2016-12-28 | 2022-11-25 | 广东欧科空调制冷有限公司 | Heat exchanger and air conditioner |
| CN107261536A (en) * | 2017-07-26 | 2017-10-20 | 江苏迈克化工机械有限公司 | A kind of liquid distribution trough of falling film evaporator |
| CN107442059B (en) * | 2017-08-08 | 2023-03-28 | 浙江理工大学 | Falling film melt polycondensation reactor |
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| CN202666436U (en) * | 2012-05-16 | 2013-01-16 | 江苏中圣高科技产业有限公司 | Liquid distributing device and falling-film evaporator provided with the same |
| CN203447787U (en) * | 2013-08-09 | 2014-02-26 | 上海森松新能源设备有限公司 | Liquid distributor of falling film evaporation device |
| CN203469505U (en) * | 2013-10-15 | 2014-03-12 | 重庆山巨化工机械有限公司 | Efficient liquid distributing device and falling film evaporator thereof |
| CN104043258A (en) * | 2014-06-25 | 2014-09-17 | 江苏中圣高科技产业有限公司 | Liquid distributor for evaporator |
| CN205495006U (en) * | 2016-04-14 | 2016-08-24 | 中国科学院工程热物理研究所 | Multichannel outside of tubes falling liquid film liquid distributor and indirect heating equipment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55162304A (en) * | 1979-06-06 | 1980-12-17 | Asahi Chem Ind Co Ltd | Liquid disperser used for vertical thin-film flowing-down type evaporator |
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2016
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202666436U (en) * | 2012-05-16 | 2013-01-16 | 江苏中圣高科技产业有限公司 | Liquid distributing device and falling-film evaporator provided with the same |
| CN203447787U (en) * | 2013-08-09 | 2014-02-26 | 上海森松新能源设备有限公司 | Liquid distributor of falling film evaporation device |
| CN203469505U (en) * | 2013-10-15 | 2014-03-12 | 重庆山巨化工机械有限公司 | Efficient liquid distributing device and falling film evaporator thereof |
| CN104043258A (en) * | 2014-06-25 | 2014-09-17 | 江苏中圣高科技产业有限公司 | Liquid distributor for evaporator |
| CN205495006U (en) * | 2016-04-14 | 2016-08-24 | 中国科学院工程热物理研究所 | Multichannel outside of tubes falling liquid film liquid distributor and indirect heating equipment |
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