CN204815721U - A divide tubular multilayer liquid distributor for falling liquid film heat exchanger - Google Patents
A divide tubular multilayer liquid distributor for falling liquid film heat exchanger Download PDFInfo
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- CN204815721U CN204815721U CN201520557734.XU CN201520557734U CN204815721U CN 204815721 U CN204815721 U CN 204815721U CN 201520557734 U CN201520557734 U CN 201520557734U CN 204815721 U CN204815721 U CN 204815721U
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Abstract
The utility model provides a divide tubular multilayer liquid distributor for falling liquid film heat exchanger, include the casing and set gradually extremely down at inside inlet pipe, branch liquid pipe, cofferdam, tertiary cloth liquid device and the membrane plug -in components of casing from last, the inlet pipe sets up the top at the casing for introduce the feed liquid, divide the liquid pipe to set up the end at the inlet pipe for feed liquid to coming from the inlet pipe is shunted, the fixed top that sets up at tertiary cloth liquid device in cofferdam for receive the feed liquid of the liquid pipe of evaluating oneself and disperse it, tertiary cloth liquid device is fixed on the bottom plate of casing bottom for evenly distributed is carried out to feed liquid to coming from the cofferdam, the membrane plug -in components are the cylindricality body, insert and establish in the bottom plate for the feed liquid that will come from tertiary cloth liquid device causes film forming in the heat exchange tube. The utility model provides the high equipartition nature of feed liquid has avoided appearing on the pipe wall of heat exchange tube the phenomenon that " plume ", scale deposit scarred, has improved the coefficient of heat transfer and the heat exchange efficiency of falling liquid film heat exchanger, has practiced thrift the energy, has more the practicality.
Description
Technical field
The utility model relates to a kind of multilayer liquid distributor, specifically a kind of tube-separating type multilayer liquid distributor for Falling film heat transfer device.
Background technology
Falling film heat transfer device is as a kind of energy-efficient evaporation equipment, be widely used in the single-action of the industries such as chemical industry, pharmacy and food or multiple-effect evaporation is concentrated and in waste treatment process, be particularly useful for the evaporation of heat sensitive material, Falling film heat transfer utensil has the features such as the higher thermal efficiency, less equipment volume, lower equipment cost.
Falling film evaporation is that feed liquid enters from the heating clamber upper tube box of Falling film heat transfer device, be evenly distributed in each heat exchanger tube through liquid distribution and film formation device, and flow from top to bottom in evenly membranaceous under gravity and vacuum induced and airflow function, heat vaporized by shell side heat medium in flow process, the steam produced enters the separation chamber of evaporimeter together with liquid phase, after being fully separated, steam enters condenser (single-action operation) or enters lower 1st effective evaporator to realize multiple-effect operation as heat medium, and liquid phase is then discharged by separation chamber.
Determine that the key of Falling film heat transfer device evaporation efficiency is the liquid distributor of Falling film heat transfer device, the quality of its performance directly has influence on production capacity and the operating characteristics of Falling film heat transfer device.Problem pockety is often there is in traditional overflow type liquid distributor when carrying out feed liquid distribution, thus cause heat exchanger tube inside to produce the phenomenon of local cutout or " plume ", heat sensitive material be there will be to the phenomenon of material deterioration sex change, the material higher for viscosity then can cause the phenomenon that in heat exchanger tube, local scaling scabs; When reduction of feed volume is excessive, feed liquid also can directly flow in heat exchanger tube from the upper end import of liquid distributor, and causing cannot even cloth liquid, the performance of reduction liquid distributor.
Utility model content
The purpose of this utility model is just to provide a kind of tube-separating type multilayer liquid distributor for Falling film heat transfer device, to solve the problem that liquid distribution is uneven and film forming is undesirable that existing liquid distributor exists.
The utility model is achieved in that
For the tube-separating type multilayer liquid distributor of Falling film heat transfer device, comprise housing and be successively set on the feed pipe of enclosure interior, separating tube, cofferdam, three grades of liquid distributors and film plug-in unit from top to bottom;
Described feed pipe is arranged on the top of described housing, for introducing feed liquid; Described separating tube is arranged on the end of described feed pipe, for shunting the feed liquid from described feed pipe; Described cofferdam is fixedly installed on the top of described three grades of liquid distributors by gusset, for receiving the feed liquid from described separating tube, and is disperseed; Described three grades of liquid distributors are fixed on the base plate of described housing bottom, for being uniformly distributed the feed liquid from cofferdam; Described film plug-in unit is cylinder, is plugged in the base plate of described housing bottom, for the feed liquid from described three grades of liquid distributors is caused film forming in heat exchanger tube.
Described three grades of liquid distributors comprise the liquid distribution plate, cloth lamina membranacea and the equal lamina membranacea that are successively set on from top to bottom below described cofferdam, described liquid distribution plate, cloth lamina membranacea and equal lamina membranacea, by the equally spaced base plate being fixed on described housing bottom of pull bar, distance sink tube and nut, the plate body of described liquid distribution plate, cloth lamina membranacea and equal lamina membranacea offer liquid distributing hole respectively.
The bottom of described feed pipe is welded with blind plate, and described blind plate offers through hole; The sidewall that the body of described separating tube is horizontally set on described feed pipe is communicated with the body of described feed pipe, the tube wall of described separating tube offers spray-hole.
Described cofferdam comprises circular disk body and along described disk body side along the back-up ring formed a circle, described disk body offers through hole, described back-up ring is provided with a circle overflow launder along spaced apart.
The body top of described film plug-in unit is cuboid, and bottom is cylinder, and described cylindrical internal diameter is less than the internal diameter of described heat exchanger tube.
The problem that the utility model is uneven for the liquid distribution existed in existing liquid distributor and film forming is undesirable, multistage cloth liquid and the mode being in charge of derivation is adopted to make feed liquid flow in each heat exchanger tube of Falling film heat transfer device in membranaceous equably, effectively improve the heat transfer coefficient of Falling film heat transfer device, avoid the generation of local dry-out.Feed liquid is first branched to several different direction by the separating tube in device, and the spray-hole of feed liquid on separating tube is sprayed onto in cofferdam, after the overflow launder dispersion on cofferdam, flow to three grades of liquid distributors from all directions; After entering three grades of liquid distributors, feed liquid first carries out elementary distributing comparatively uniformly through liquid distribution plate, substantially realizing all directions on bottom surface all has liquid to cover, and then distribute uniformly further through cloth lamina membranacea, make the liquid level of each position on bottom surface basically identical, carry out third time distribution finally by equal rete and be drained to respectively in connected heat exchanger tube by multiple film plug-in unit, making the tube wall of each heat exchanger tube all to be formed the uniform liquid film of thickness.
The utility model effectively raises the uniform property of feed liquid, " plume " appears in the tube wall avoiding heat exchanger tube, phenomenon that fouling scabs, and more effective heat transfer coefficient and the heat exchange efficiency that improve Falling film heat transfer device, has saved the energy; Simultaneously, taking the mode of multi-layer multi-stage cloth liquid that feed liquid is carried out repeated dispensing due to the utility model is uniformly distributed in each heat exchanger tube to make it, therefore require to decrease all to a certain extent to the processing of every one deck, assembling and installation accuracy, thus saved the cost of investment of equipment, there is higher practicality.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the body distributed architecture schematic diagram of separating tube.
Fig. 3 is the body cross-sectional structure schematic diagram of separating tube.
Fig. 4 is the structural representation in cofferdam.
In figure: 1, feed pipe, 2, separating tube, 2-1, spray-hole, 3, cofferdam, 3-1, disk body, 3-2, back-up ring, 3-3, overflow launder, 4, liquid distribution plate, 5, cloth lamina membranacea, 6, all lamina membranacea, 7, film plug-in unit, 8, pull bar, 9, distance sink tube, 10, nut, 11, gusset, 12, housing, 13, base plate.
Detailed description of the invention
As shown in Fig. 1 ~ 4, the utility model comprises housing 12 and is arranged on feed pipe 1, separating tube 2,3, three grades, the cofferdam part such as liquid distributor and film plug-in unit 7 of housing 12 inside.
Feed pipe 1 is arranged on the top of housing 12, for importing feed liquid, the bottom of feed pipe 1 is provided with separating tube 2, the tube wall that separating tube 2 is welded on feed pipe 1 communicates with feed pipe 1, the lower surface of feed pipe 1 is welded with the blind plate for sealing bottom feed pipe 1, blind plate evenly offers through hole, to prevent hydrops bottom feed pipe 1, also can ensure that the position immediately below feed pipe 1 also can be distributed to feed liquid simultaneously.Separating tube 2 is divided into six identical bodys, six bodys to be positioned in same level and to extend respectively to six different directions centered by feed pipe 1, folded by adjacent two bodys, central angle is 60 °, thus by feed liquid uniform divided flows to the six different direction from feed pipe 1; The latter half tube wall of each body all offers two row's spray-hole 2-1, the diameter of spray-hole 2-1 determines according to the characteristic such as viscosity, surface tension of material, each row's spray-hole 2-1 place straight line all with the axis being parallel of its place body, and the central angle that between two straight lines at two row spray-hole places on same body, folded circular arc is corresponding is 120 °, feed liquid sprays downwards equably through each spray-hole 2-1.Cofferdam 3 is fixed on above three grades of liquid distributors by gusset 11, and it is positioned at immediately below separating tube 2, and its diameter is slightly larger than separating tube 2 place diameter of a circle, and the feed liquid that can effectively prevent separating tube 2 from spraying downwards is splashed; Cofferdam 3 comprises circular disk body 3-1 and is arranged on edge, disk body 3-1 side and the back-up ring 3-2 fenced up by disk body 3-1, disk body 3-1 is evenly distributed with the through hole for preventing the inner hydrops in cofferdam 3, back-up ring 3-2 is provided with a circle overflow launder 3-3 along spaced apart, overflow launder 3-3 is uniformly distributed along back-up ring 3-2, thus makes feed liquid flow to three grades of liquid distributors from all directions equably through overflow launder 3-3.
Three grades of liquid distributors comprise the liquid distribution plate 4, cloth lamina membranacea 5 and the equal lamina membranacea 6 that are horizontally set on successively from top to bottom below cofferdam 3, three is by the equally spaced base plate 13 be fixed on bottom housing 12 of pull bar 8, distance sink tube 9 and nut 10, respectively cloth liquid, cloth film and equal membrane operations are carried out to the feed liquid flow down from cofferdam 3, make feed liquid repeated dispensing, thus reach the object of film forming, wherein all lamina membranacea 6 is set to two-layer, even to ensure the liquid holdup in each heat exchanger tube; The plate body of liquid distribution plate 4, cloth lamina membranacea 5 and equal lamina membranacea 6 all offers liquid distributing hole, the diameter of every layer of liquid distributing hole reduces gradually from top to bottom, quantity increases gradually, the quantity of liquid distributing hole and diameter are determined according to material properties, heat exchanger tube diameter, heat exchanger tube quantity and thickness of liquid film, and the adjacent liquid distributing hole of each layer is that equilateral triangle is uniformly distributed.Film plug-in unit 7 is cylinder, and its first half is cuboid, and the latter half is cylinder, and the internal diameter of column part is slightly less than the internal diameter of heat exchanger tube; Film plug-in unit 7 is vertically plugged in base plate 13, and its lower end is connected with heat exchanger tube, thus by feed liquid that equal lamina membranacea 6 stays with in the heat exchanger tube of membranaceous feeding Falling film heat transfer device.
The utility model significantly can improve the heat transfer coefficient of Falling film heat transfer device compared to the film-distributing device of routine, greatly save the energy, and its fabrication and installation is all very convenient.
Claims (5)
1.
a kind offor the tube-separating type multilayer liquid distributor of Falling film heat transfer device, it is characterized in that, comprise housing and be successively set on the feed pipe of enclosure interior, separating tube, cofferdam, three grades of liquid distributors and film plug-in unit from top to bottom;
Described feed pipe is arranged on the top of described housing, for introducing feed liquid; Described separating tube is arranged on the end of described feed pipe, for shunting the feed liquid from described feed pipe; Described cofferdam is fixedly installed on the top of described three grades of liquid distributors by gusset, for receiving the feed liquid from described separating tube, and is disperseed; Described three grades of liquid distributors are fixed on the base plate of described housing bottom, for being uniformly distributed the feed liquid from cofferdam; Described film plug-in unit is cylinder, is plugged in the base plate of described housing bottom, for the feed liquid from described three grades of liquid distributors is caused film forming in heat exchanger tube.
2. the tube-separating type multilayer liquid distributor for Falling film heat transfer device according to claim 1, it is characterized in that, described three grades of liquid distributors comprise the liquid distribution plate, cloth lamina membranacea and the equal lamina membranacea that are successively set on from top to bottom below described cofferdam, described liquid distribution plate, cloth lamina membranacea and equal lamina membranacea, by the equally spaced base plate being fixed on described housing bottom of pull bar, distance sink tube and nut, the plate body of described liquid distribution plate, cloth lamina membranacea and equal lamina membranacea offer liquid distributing hole respectively.
3. the tube-separating type multilayer liquid distributor for Falling film heat transfer device according to claim 1, it is characterized in that, the bottom of described feed pipe is welded with blind plate, and described blind plate offers through hole; The sidewall that the body of described separating tube is horizontally set on described feed pipe is communicated with the body of described feed pipe, the tube wall of described separating tube offers spray-hole.
4. the tube-separating type multilayer liquid distributor for Falling film heat transfer device according to claim 1, it is characterized in that, described cofferdam comprises circular disk body and along described disk body side along the back-up ring formed a circle, described disk body offers through hole, described back-up ring is provided with a circle overflow launder along spaced apart.
5. the tube-separating type multilayer liquid distributor for Falling film heat transfer device according to claim 1, is characterized in that, the body top of described film plug-in unit is cuboid, and bottom is cylinder, and described cylindrical internal diameter is less than the internal diameter of described heat exchanger tube.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520557734.XU CN204815721U (en) | 2015-07-29 | 2015-07-29 | A divide tubular multilayer liquid distributor for falling liquid film heat exchanger |
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| CN201520557734.XU CN204815721U (en) | 2015-07-29 | 2015-07-29 | A divide tubular multilayer liquid distributor for falling liquid film heat exchanger |
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| CN204815721U true CN204815721U (en) | 2015-12-02 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105396311A (en) * | 2015-12-14 | 2016-03-16 | 深圳市瑞升华科技股份有限公司 | Falling film evaporator |
| CN105854530A (en) * | 2016-06-19 | 2016-08-17 | 张罡 | Casting-type liquid distributor |
| CN107314574A (en) * | 2017-08-09 | 2017-11-03 | 大连理工大学 | Vertical layering cloth liquid two-fluid evaporator |
| CN107356017A (en) * | 2016-05-09 | 2017-11-17 | 浙江盾安人工环境股份有限公司 | Downward film evaporator liquid distributor |
| CN108654126A (en) * | 2018-06-26 | 2018-10-16 | 北京广厦环能科技股份有限公司 | A kind of material distributor and falling film evaporator |
| CN110292993A (en) * | 2019-06-04 | 2019-10-01 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of detachable media box framework and its assembly technology |
| CN110772820A (en) * | 2019-12-06 | 2020-02-11 | 东华工程科技股份有限公司 | Dimethyl oxalate falling film evaporator for synthesizing oxamide |
| CN117463752A (en) * | 2023-12-01 | 2024-01-30 | 轻工业杭州机电设计研究院有限公司 | High-value utilization cooking device for bulk organic wastes and application method thereof |
-
2015
- 2015-07-29 CN CN201520557734.XU patent/CN204815721U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105396311A (en) * | 2015-12-14 | 2016-03-16 | 深圳市瑞升华科技股份有限公司 | Falling film evaporator |
| CN105396311B (en) * | 2015-12-14 | 2017-05-31 | 深圳市瑞升华科技股份有限公司 | Falling film evaporator |
| CN107356017A (en) * | 2016-05-09 | 2017-11-17 | 浙江盾安人工环境股份有限公司 | Downward film evaporator liquid distributor |
| CN105854530A (en) * | 2016-06-19 | 2016-08-17 | 张罡 | Casting-type liquid distributor |
| CN107314574A (en) * | 2017-08-09 | 2017-11-03 | 大连理工大学 | Vertical layering cloth liquid two-fluid evaporator |
| CN107314574B (en) * | 2017-08-09 | 2023-03-24 | 大连理工大学 | Vertical layered liquid distribution double-fluid evaporator |
| CN108654126A (en) * | 2018-06-26 | 2018-10-16 | 北京广厦环能科技股份有限公司 | A kind of material distributor and falling film evaporator |
| CN110292993A (en) * | 2019-06-04 | 2019-10-01 | 甘肃酒钢集团宏兴钢铁股份有限公司 | A kind of detachable media box framework and its assembly technology |
| CN110772820A (en) * | 2019-12-06 | 2020-02-11 | 东华工程科技股份有限公司 | Dimethyl oxalate falling film evaporator for synthesizing oxamide |
| CN117463752A (en) * | 2023-12-01 | 2024-01-30 | 轻工业杭州机电设计研究院有限公司 | High-value utilization cooking device for bulk organic wastes and application method thereof |
| CN117463752B (en) * | 2023-12-01 | 2024-04-09 | 轻工业杭州机电设计研究院有限公司 | High-value utilization cooking device for bulk organic wastes and application method thereof |
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| C14 | Grant of patent or utility model | ||
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| CP03 | Change of name, title or address |
Address after: 050000 10-1201, Fangda Science Park, 266 Tianshan Street, high tech Zone, Shijiazhuang City, Hebei Province Patentee after: Shijiazhuang Dingwei Chemical Equipment Engineering Co.,Ltd. Address before: 050000 3rd floor, building 6, Fangda science and Technology Park, 266 Tianshan Street, high tech Zone, Shijiazhuang City, Hebei Province Patentee before: SHIJIAZHUANG DINGWEI CHEMICAL EQUIPMENT ENGINEERING Co.,Ltd. |
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| CP03 | Change of name, title or address |