CN208097434U - A kind of falling film evaporator distributor - Google Patents
A kind of falling film evaporator distributor Download PDFInfo
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- CN208097434U CN208097434U CN201820265989.2U CN201820265989U CN208097434U CN 208097434 U CN208097434 U CN 208097434U CN 201820265989 U CN201820265989 U CN 201820265989U CN 208097434 U CN208097434 U CN 208097434U
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- film evaporator
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Abstract
The utility model relates to a kind of falling film evaporator distributors,Belong to falling film evaporator technical field,Including feed pipe,Primary distributor,Second level distributor and dispensing head,The feed pipe is mounted on top of the tank,The primary distributor includes level-one distributing barrel and support frame,The second level distributor includes second level distributing barrel and lug,Several second level distribution holes are arranged in second level distributing barrel bottom,The level-one distributing barrel is mounted on second level distributing barrel bottom surface by support frame,Distribution grid is arranged in level-one distributing barrel bottom,Several level-one distribution holes are uniformly arranged on the distribution grid,The area summation of the level-one distribution hole is greater than twice of feed pipe orifice area,Pass through setting level-one distributing barrel and second level distributing barrel,Liquid is distributed step by step,Make liquid distribution more evenly,By the relative area that level-one distribution hole and feed pipe nozzle is arranged,The liquid for entering tank body from feed pipe is set more uniformly to pass through primary distributor,Prevent the phenomenon that being unevenly distributed.
Description
Technical field
The utility model relates to a kind of falling film evaporator distributors, belong to falling film evaporator technical field.
Background technique
Falling film evaporation is that feed liquid is added from falling film evaporator heating room upper tube box, through liquid distribution and film formation device,
It is even to be assigned in each heat exchanger tube, under gravity and vacuum induced and airflow function, flows from above to below, flow at uniformly membranaceous
Cheng Zhong is heated by shell side heat medium and is vaporized, and the steam and liquid phase of generation enter evaporator separating chamber jointly, and vapour-liquid is through abundant point
From steam enters condenser condensation (single-action operation) or enters lower 1st effective evaporator as heat medium, to realize that multiple-effect is grasped
Make, liquid phase is then discharged by separation chamber, and the workflow of vertical falling-film evaporator is：Feed liquid enters liquid distributor from top, material
Liquid distributor is uniformly distributed in feed liquid in every heating tube, and makes it in membranaceous along inside pipe wall flow down, liquid film by
From tube wall be passed to heat and carburation by evaporation, wherein liquid distributor is the critical component of falling film evaporator, falling film evaporator
Intensity of heat exchange and production capacity are substantially dependent on the uniformity coefficient that feed liquid is distributed along heat exchanger tube, and so-called be uniformly distributed is not only
Refer to that liquid will be uniformly distributed in every a pipe, to be also distributed along whole even tube walls of every root canal, and in entire pipe
Length on keep its uniformity, when feed liquid cannot equably moisten all heating inside pipe walls, lack liquid or few liquid surface can
It can be because being evaporated due to fouling, the flowing of liquid film is blocked in turn again to make the heat transfer condition of adjacent domain further dislike in fouling surface
Change.
A kind of entitled Type of Falling-film Evaporator Liquid Distributor's is disclosed in the prior art.Application No. is
2015108266258 patent, including heating tube, tube sheet, distribution plate, end socket and feed pipe are inserted with drainage tube in heating tube, draw
The lower part of flow tube is at horn-like, and drainage tube is coaxial with heating tube, and the outer wall of drainage tube and the inner wall of heating tube have gap, draw
The support plate and tube sheet of flow tube have gap, and feed liquid enters drainage tube from overflow after disk hole flows to tube sheet is distributed, solves existing skill
The problem of feed liquid is unevenly distributed in art, but there is also some problems are to be solved simultaneously：Feed pipe is after container top entrance
If nozzle is concordant with container inner wall, liquid will lead to along container inner wall toward flowing down, influence distributor is uniformly distributed effect；It is public
It has opened that feed liquid enters overflow after dispersion impeller by feed pipe and sieve pore of being tried to get to the heart of a matter flows out, has been evenly distributed on tube sheet, but tries to get to the heart of a matter sieve
If the relative area ratio of hole and feed pipe is improper, it is easy to the liquid of dispersion impeller overflow be caused to be more than sieve pore outflow of trying to get to the heart of a matter
Liquid causes to be unevenly distributed, influences distributed effect；Application documents are also disclosed by making between existing between support plate and tube sheet
Gap, ensure that above tube sheet will not material hydrops phenomenon after formation operation, but if deposited between support plate and tube sheet
In gap, liquid is easy to cause to enter heating tube along gap, rather than by entering heating tube at the top of drainage tube, reduce drainage tube
Drainage effect, cannot uniformly flow to heating tube inner wall so as to cause the liquid in drainage tube, reduce equally distributed effect.
Utility model content
The utility model makes liquid distribution in view of the deficienciess of the prior art, provide a kind of falling film evaporator distributor
More evenly, convenient for timely cleaning device after the completion of operation, avoiding device internal incrustation influences next distributed effect.
The technical solution that the utility model solves above-mentioned technical problem is as follows：A kind of falling film evaporator distributor, including into
Expects pipe, primary distributor, second level distributor and dispensing head, the feed pipe are mounted on top of the tank, the primary distributor packet
Level-one distributing barrel and support frame are included, the second level distributor includes second level distributing barrel and lug, and second level distributing barrel bottom is set
Several second level distribution holes are set, the level-one distributing barrel is mounted on second level distributing barrel bottom surface by support frame, a fraction
Distribution grid is arranged in cloth cylinder bottom, is uniformly arranged several level-one distribution holes, the area of the level-one distribution hole on the distribution grid
Summation is greater than twice of feed pipe orifice area.
The utility model has the beneficial effects that：By setting level-one distributing barrel and second level distributing barrel, liquid is carried out step by step
Distribution, makes liquid distribution more evenly, by the way that the relative area of level-one distribution hole and feed pipe nozzle is arranged, makes to enter from feed pipe
The liquid of tank body more uniformly passes through primary distributor, prevents the phenomenon that being unevenly distributed.
Based on the above technical solution, the utility model can also do following improvement.
Further, lug is arranged in second level distributing barrel bottom, and support plate, the second level distributing barrel is arranged in inner tank wall
Lug be removably mounted in support plate by screw.
Beneficial effect using above-mentioned further scheme is, by setting screw connection for second level distributing barrel, to make second level
Distributing barrel is removably connect with tank body, and primary distributor easy to clean and second level distributor and inner tank wall prevent for a long time
Distributed effect is influenced using the retardance liquid flowing of device internal incrustation is caused.
Further, the dispensing head includes drainage tube and ring flat-plate, and the ring flat-plate and drainage tube are welded to connect, under the ring flat-plate
Plane is smooth and vertical with drainage tube, and the ring flat-plate is arranged in tube sheet upper surface, and the drainage tube protrudes into the heat exchanger tube on tube sheet
In.
Beneficial effect using above-mentioned further scheme is, guarantees drainage tube and heat exchanger tube alignment, drainage tube installation and
Convenient disassembly is quick, cleaning easy to disassemble.
Further, the side edge of the level-one distributing barrel is less than the depth of side wall along zigzag, the depth of sawtooth is set as.
Beneficial effect using above-mentioned further scheme is, by setting zigzag for level-one distributing barrel side wall, to make one
Liquid in grade distributing barrel can be more uniformly along level-one distributing barrel side wall overflow.
Further, vertical projection of the second level distribution hole on tube sheet is evenly distributed in around heat exchange nozzle.
Beneficial effect using above-mentioned further scheme is to prevent the liquid flowed out from second level distributing barrel from flowing directly into heat exchange
It can not form a film along tube wall in pipe, while be distributed more evenly across the liquid flowed out from second level distributing barrel around heat exchange nozzle.
Further, horn mouth, interior diameter of the bell-mouthed maximum gauge than heat exchanger tube is arranged in the drainage tube lower end
It is small.
Beneficial effect using above-mentioned further scheme is easier to when making the liquid flowed into drainage tube along drainage tube drippage
Fall in heat transfer tube wall film forming.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model；
Fig. 2 is level-one distribution hole schematic diagram；
Fig. 3 is second level distribution hole schematic diagram；
Fig. 4 is schematic enlarged-scale view at A in figure.
1. feed pipe in figure, 2. tank bodies, 3. level-one distributing barrels, 4. second level distributing barrels, 5. screws, 6. heat exchanger tubes, 7. drainages
Pipe, 8. ring flat-plates, 9. tube sheets, 21. support plates, 31. distribution grids, 32. support frames, 33. level-one distribution holes, 41. second level distribution holes,
42. lug, 71. horn mouths.
Specific embodiment
The principles of the present invention and feature are described below in conjunction with attached drawing, example is served only for explaining that this is practical
It is novel, it is not intended to limit the scope of the utility model.
Embodiment 1
A kind of falling film evaporator distributor, including feed pipe 1, primary distributor, second level distributor and dispensing head, it is described into
Expects pipe 1 is mounted on 2 top of tank body, and the primary distributor includes level-one distributing barrel 3 and support frame 32, the second level distributor packet
Second level distributing barrel 4 and lug 42 are included, several second level distribution holes 41, the level-one distribution is arranged in 4 bottom of second level distributing barrel
Cylinder 3 is mounted on 4 bottom surface of second level distributing barrel by support frame 32,3 bottom of the level-one distributing barrel setting distribution grid 31, and described point
Several level-one distribution holes 33 are uniformly arranged on fabric swatch 31, the area summation of the level-one distribution hole 33 is greater than 1 nozzle of feed pipe
Twice of area is distributed liquid step by step, keeps liquid distribution more equal by setting level-one distributing barrel 3 and second level distributing barrel 4
It is even, by the way that the relative area of level-one distribution hole 33 and 1 nozzle of feed pipe is arranged, keep the liquid for entering tank body from feed pipe 1 more equal
Evenly by primary distributor, prevent the phenomenon that being unevenly distributed, lug 42, tank is arranged in 4 bottom of second level distributing barrel
Support plate 21 is set on 2 inner wall of body, and the lug 42 of the second level distributing barrel 4 is removably mounted on support plate 21 by screw 5
On, it is connected by setting screw 5 for second level distributing barrel 4, connect second level distributing barrel 4 removably with tank body 2, it is easy to clean
Primary distributor and second level distributor and 2 inner wall of tank body prevent use for a long time from causing the retardance liquid flowing of device internal incrustation
And influence distributed effect；The dispensing head includes drainage tube 7 and ring flat-plate 8, and the ring flat-plate 8 is welded to connect with drainage tube 7, the ring
8 lower plane of plate is smooth and vertical with drainage tube 7, and the ring flat-plate 8 is arranged in 9 upper surface of tube sheet, and the drainage tube 7 protrudes on tube sheet
Heat exchanger tube 6 in, guarantee drainage tube 7 and 6 alignment of heat exchanger tube, drainage tube 7 mount and dismount it is convenient and efficient, it is easy to disassemble clear
It washes；The side edge of the level-one distributing barrel 3 is less than the depth of side wall along zigzag, the depth of sawtooth is set as, by by level-one
3 side wall of distributing barrel is set as zigzag, and the liquid in level-one distributing barrel 3 is allow to overflow more uniformly along 3 side wall of level-one distributing barrel
Stream；The second level distribution hole 41 is evenly distributed in around 6 mouthfuls of heat exchanger tube in the vertical projection on tube sheet 9, is prevented from second level
The liquid that distributing barrel 4 flows out is flowed directly into heat exchanger tube 6 and can not be formed a film along tube wall, while making the liquid flowed out from second level distributing barrel 4
Body is distributed more evenly across around 6 mouthfuls of heat exchanger tube；Horn mouth 71, the maximum of the horn mouth 71 is arranged in 7 lower end of drainage tube
Diameter is smaller than the interior diameter of heat exchanger tube 6, and the liquid flowed into drainage tube 7 is made to be easier to fall in heat exchanger tube 6 when dripping along drainage tube 7
Wall film forming.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (6)
1. a kind of falling film evaporator distributor, it is characterised in that：Including feed pipe, primary distributor, second level distributor and distribution
Head, the feed pipe are mounted on top of the tank, and the primary distributor includes level-one distributing barrel and support frame, the second level distribution
Device includes second level distributing barrel and lug, several second level distribution holes, the level-one distributing barrel is arranged in second level distributing barrel bottom
It is mounted on second level distributing barrel bottom surface by support frame, level-one distributing barrel bottom setting distribution grid, on the distribution grid
Even several level-one distribution holes of setting, the area summation of the level-one distribution hole are greater than twice of feed pipe orifice area.
2. a kind of falling film evaporator distributor according to claim 1, it is characterised in that：Second level distributing barrel bottom is set
Lug is set, support plate is set in inner tank wall, the lug of the second level distributing barrel is removably mounted on support plate by screw
On.
3. a kind of falling film evaporator distributor according to claim 1, it is characterised in that：The dispensing head includes drainage tube
And ring flat-plate, the ring flat-plate and drainage tube are welded to connect, the ring flat-plate lower plane is smooth and vertical with drainage tube, the ring flat-plate setting
In tube sheet upper surface, the drainage tube is protruded into the heat exchanger tube on tube sheet.
4. a kind of falling film evaporator distributor according to claim 1, it is characterised in that：The side wall of the level-one distributing barrel
Edge is set as zigzag, and the depth of sawtooth is less than the depth of side wall.
5. a kind of falling film evaporator distributor according to claim 1, it is characterised in that：The second level distribution hole is in tube sheet
On vertical projection be evenly distributed in heat exchange nozzle around.
6. a kind of falling film evaporator distributor according to claim 3, it is characterised in that：Loudspeaker is arranged in the drainage tube lower end
Mouth, the bell-mouthed maximum gauge are smaller than the interior diameter of heat exchanger tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820265989.2U CN208097434U (en) | 2018-02-23 | 2018-02-23 | A kind of falling film evaporator distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820265989.2U CN208097434U (en) | 2018-02-23 | 2018-02-23 | A kind of falling film evaporator distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208097434U true CN208097434U (en) | 2018-11-16 |
Family
ID=64124628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820265989.2U Active CN208097434U (en) | 2018-02-23 | 2018-02-23 | A kind of falling film evaporator distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208097434U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110152333A (en) * | 2019-05-31 | 2019-08-23 | 天津科技大学 | Ultrasonic type elevating membrane integration evaporation concentration device |
| CN111701261A (en) * | 2020-06-22 | 2020-09-25 | 天津科技大学 | Gas and liquid guiding and distributing device of falling film evaporator |
| CN112516616A (en) * | 2019-09-19 | 2021-03-19 | 中国石油化工股份有限公司 | Crystallization device and method for purifying ethylene carbonate |
| CN112516615A (en) * | 2019-09-19 | 2021-03-19 | 中国石油化工股份有限公司 | Device and method for crystallization purification |
-
2018
- 2018-02-23 CN CN201820265989.2U patent/CN208097434U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110152333A (en) * | 2019-05-31 | 2019-08-23 | 天津科技大学 | Ultrasonic type elevating membrane integration evaporation concentration device |
| CN112516616A (en) * | 2019-09-19 | 2021-03-19 | 中国石油化工股份有限公司 | Crystallization device and method for purifying ethylene carbonate |
| CN112516615A (en) * | 2019-09-19 | 2021-03-19 | 中国石油化工股份有限公司 | Device and method for crystallization purification |
| CN111701261A (en) * | 2020-06-22 | 2020-09-25 | 天津科技大学 | Gas and liquid guiding and distributing device of falling film evaporator |
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