CN104784949A - Special-shaped falling-film evaporation tube - Google Patents
Special-shaped falling-film evaporation tube Download PDFInfo
- Publication number
- CN104784949A CN104784949A CN201510153638.3A CN201510153638A CN104784949A CN 104784949 A CN104784949 A CN 104784949A CN 201510153638 A CN201510153638 A CN 201510153638A CN 104784949 A CN104784949 A CN 104784949A
- Authority
- CN
- China
- Prior art keywords
- special
- falling film
- film type
- shaped falling
- tube
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention aims to provide a special-shaped falling-film evaporation tube which comprises a flange, a feeding tube, a horizontal branch tube, a liquid distribution tube, a special-shaped falling-film evaporation tube, a diversion plate, liquid distribution teeth and an evaporator shell, wherein the flange is arranged at an inlet of the evaporate shell; one end of the feeding tube is connected with the flange, and the other end of the feeding tube is connected with the horizontal branch tube; the liquid distribution tube is arranged at the bottom of the horizontal branch tube; a spray hole is formed in the bottom of the liquid distribution tube; the special-shaped falling-film evaporation tube is arranged under the liquid distribution tube; the diversion plate is arranged at the top of the special-shaped falling-film evaporation tube; the liquid distribution teeth are arranged at the bottom of the special-shaped falling-film evaporation tube. The special-shaped falling-film evaporation tube has the characteristics of large heat exchanging area, uniform distribution of liquid films outside the tube, strong flow turbulence effect of steam in the tube, and good heat exchanging effect.
Description
Technical field
The invention belongs to vaporizer technology field, particularly relate to a kind of special-shaped falling film type evaporation pipe.
Background technology
Falling Film Evaporator of Horizontal Tube have heat transfer efficiency high, have a narrow range of temperature; Equipment is simple, and volume is little; After startup, do not need live steam; Power consumption is low, low cost and other advantages, is specially adapted to thermosensitive solution evaporation, is widely used in now the industries such as food, medicine, chemical industry, sewage disposal, desalinization.One of key equipment of Falling Film Evaporator of Horizontal Tube is falling film type evaporation pipe.At present, heat exchanger tube conventional in evaporation equipment is circular light pipe, but circular light pipe exists following shortcoming: one, the heat exchange efficiency of circular light pipe is low; Two, the skewness of the outer liquid film of pipe, easily produces dry spot at liquid film thin location, affects the life-span of heat exchanger tube; Three, in circular heat exchange tube during vapor flow, form laminar boundary layer or turbulent layer, along with vapor stream boundary layer is in the development of heat exchanger tube inwall, the thickness in boundary layer will increase, the corresponding coefficient of heat transfer will reduce, meanwhile, and the liquid formed after steam-condensation, the bottom in heat exchanger tube will be accumulated in, the heat exchange area of managing interior steam and the outer liquid film of pipe is reduced.
Summary of the invention
The defect that the present invention exists to overcome prior art, the object of this invention is to provide a kind of heat exchange area large, manages outer liquid film and be evenly distributed, and in pipe, the effect of steam flow-disturbing is strong, the special-shaped falling film type evaporation pipe of good effect of heat exchange.
The technology used in the present invention solution is a kind of special-shaped falling film type evaporation pipe, comprise flange, feed pipe, horizontal branch pipe, liquid distributor, special-shaped falling film evaporation pipe, deflector, cloth liquid tooth, evaporator shell, described flange is arranged on the porch of evaporator shell, described described feed pipe one end and Flange joint, the other end is connected with horizontal branch pipe; Be provided with liquid distributor bottom described horizontal branch pipe, bottom described liquid distributor, be provided with spray apertures; Described special-shaped falling film type evaporation pipe is arranged on below liquid distributor, and described special-shaped falling film type evaporation pipe top is provided with bottom deflector and is provided with cloth liquid tooth.
Described spray apertures is set in qually spaced on the center line bottom liquid distributor.
Described special-shaped falling film type evaporation pipe is made up of the circular arc of top and two different radiis of bottom and the plane that is connected two circular arcs.
The radius ratio of described top arc and bottom circular arc is 2:1.
Described top arc is rough surface with the outer surface essence grinding process of the plane being connected two circular arcs.
The inner surface of described special-shaped falling film type evaporation pipe is provided with screw thread.
Described deflector height is between 1cm ~ 2cm.
Described cloth liquid tooth, tooth depth is between 1cm ~ 2cm, and space width is 2cm.
Wherein: the length of horizontal branch pipe determines according to the arrangement width of falling film type evaporation pipe special-shaped in evaporimeter, the length of liquid distributor and number determine according to the length of falling film type evaporation pipe special-shaped in evaporimeter and number.When the solution gone out by spray apertures drip, special-shaped falling film type evaporation pipe top arc place is flowed uniformly to by deflector, uniform liquid film is formed and explosive evaporation of absorbing heat along rough surface, unevaporated solution converges to the circular arc place, bottom of special-shaped falling film type evaporation pipe, and under the effect of cloth liquid tooth, carry out a rectification, make solution form drop at each crown place to drip, evenly drip on the deflector of the special-shaped falling film type evaporation pipe pouring below; When steam is inner by special-shaped falling film type evaporation pipe, complete condensation exothermic process with the liquid film heat exchange outside pipe.
Compared with prior art, the beneficial effect that the present invention has is: liquid distributor docks with horizontal branch pipe Bu Shi center, prevents hydrops phenomenon in horizontal branch pipe; Abnormity falling film type evaporation pipe is designed to be inverted pyriform, is inverted pyriform and adds heat exchange area, avoid the region that dry spot may occur compared with pipe; Abnormity falling film type evaporation pipe installs deflector additional, ensure that uniform liquid flows to evaporation tube central upper portion line place, avoids liquid distribution uneven; Abnormity falling film type evaporation pipe installs cloth liquid tooth additional, plays rectified action, adds number and the uniformity of cloth liquid point simultaneously; Abnormity falling film type evaporation pipe tube outer surface carries out roughening process, adds vaporization nucleus calculation, enhances heat transfer effect; In abnormity falling film type evaporation pipe pipe, internal thread is set, destroys the formation in boundary layer, play flow-disturbing effect, strengthen in-tube condensation heat transfer effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is A-A profile in Fig. 1;
Fig. 3 is the top view of Fig. 1;
Fig. 4 is special-shaped falling film type evaporation pipe sectional view in Fig. 1;
Fig. 5 is the profile of B-B in Fig. 4.
1. flanges, 2. feed pipe, 3. horizontal branch pipe, 4. liquid distributor, 5. evaporator shell in figure, 6. special-shaped falling film type evaporation pipe, 7. deflector, 8. cloth liquid tooth, 9. spray apertures, 10. rough surface, 11. screw threads.
Detailed description of the invention
Embodiment 1:
As Figure 1-5: a kind of special-shaped falling film type evaporation pipe 6, comprise flange 1, feed pipe 2, horizontal branch pipe 3, liquid distributor 4, special-shaped falling film evaporation pipe, deflector 7, cloth liquid tooth 8, evaporator shell 5, described flange 1 is arranged on the porch of evaporator shell 5, described described feed pipe 2 one end is connected with flange 1, and the other end is connected with horizontal branch pipe 3; Liquid distributor 4 is provided with bottom described horizontal branch pipe 3, avoid the generation of hydrops phenomenon in liquid distributor 4, liquid distributor 4 and horizontal branch pipe 3 are not center weld, syndeton as shown in Figure 2, line place of liquid distributor 4 bottom centre has spray apertures 9, and the liquid accumulated in horizontal branch pipe 3 flows in liquid distributor 4, by spray apertures 9 drip on special-shaped falling film type evaporation pipe 6, avoid the generation of hydrops phenomenon in horizontal branch pipe 3, bottom described liquid distributor 4, be provided with spray apertures 9; Described spray apertures 9 is set in qually spaced on the center line bottom liquid distributor 4.Described special-shaped falling film type evaporation pipe 6 is arranged on below liquid distributor 4, and described special-shaped falling film type evaporation pipe 6 top is provided with bottom deflector 7 and is provided with cloth liquid tooth 8.Described deflector 7 is highly 1cm.Described cloth liquid tooth 8, tooth depth is 2cm, and space width is 2cm.What the setting of deflector 7 made to drip the dissolution homogeneity poured on special-shaped falling film type evaporation pipe 6 is distributed to circular arc place, evaporation tube top, abnormity circular arc bottom, falling film type evaporation pipe 6 bottom is welded with cloth liquid tooth 8, play rectified action, add number and the uniformity of cloth liquid point simultaneously.
Described special-shaped falling film type evaporation pipe 6 is made up of the circular arc of top and two different radiis of bottom and the plane that is connected two circular arcs.The radius ratio of described top arc and bottom circular arc is 2:1.The evaporation tube of this cross sectional shape, compared with common pipe, adds heat exchange area; From circular hollow section, the distribution of liquid film outside horizontal tube is: pipe top and bottom liquid film thickness thicker, at circular hollow section level place, liquid film is thinner, dry spot phenomenon is very easily produced when heat exchange amount is large, have impact on the life-span of heat exchanger tube, and level place, special-shaped falling film type evaporation pipe 6 cross section is inclined plane, liquid film is evenly distributed.
Described top arc is rough surface 10 with the outer surface essence grinding process of the plane being connected two circular arcs.When solution flows through top circular arc, because arc radius is large and the effect of rough surface 10, it is slower when thin film drainage velocity ratio flows through special-shaped falling film type evaporation pipe 6 bottom circular arc, and in pipe during vapor flow condensation heat release, condensate liquid accumulates in pipe bottom, pipe top heat transfer effect is best, and the design of this inverted pyriform and rough surface process, enhance heat transfer effect.Be equivalent to add vaporization nucleus calculation, liquid film is easier explosive evaporation on rough surface 10, also provide enhanced heat transfer effect simultaneously.
Abnormity falling film type evaporation pipe 6 as shown in Figure 1 arrangement mode is square, and in present evaporimeter, evaporation tube mostly is rounded projections arranged mode.The indirect steam that the outer liquid film evaporation of evaporation tube produces, when the device suctions such as vavuum pump are upwards flowed, can produce flow-disturbing to affect drop and be uniformly distributed, the special-shaped falling film type evaporation pipe 6 installing deflector 7 and cloth liquid tooth 8 additional adopts square arrangement mode, can reduce the impact of flow-disturbing.
The inner surface of described special-shaped falling film type evaporation pipe 6 is provided with screw thread 11.Time in steam flowing pipe, the formation in boundary layer can be destroyed, play flow-disturbing effect, strengthen in-tube condensation heat transfer effect.
More than show and describe general principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (8)
1. a special-shaped falling film type evaporation pipe, it is characterized in that: comprise flange, feed pipe, horizontal branch pipe, liquid distributor, special-shaped falling film evaporation pipe, deflector, cloth liquid tooth, evaporator shell, described flange is arranged on the porch of evaporator shell, described described feed pipe one end and Flange joint, the other end is connected with horizontal branch pipe; Be provided with liquid distributor bottom described horizontal branch pipe, bottom described liquid distributor, be provided with spray apertures; Described special-shaped falling film type evaporation pipe is arranged on below liquid distributor, and described special-shaped falling film type evaporation pipe top is provided with bottom deflector and is provided with cloth liquid tooth.
2. special-shaped falling film type evaporation pipe according to claim 1, is characterized in that: described spray apertures is set in qually spaced on the center line bottom liquid distributor.
3. special-shaped falling film type evaporation pipe according to claim 1, is characterized in that: described special-shaped falling film type evaporation pipe is made up of the circular arc of top and two different radiis of bottom and the plane that is connected two circular arcs.
4. special-shaped falling film type evaporation pipe according to claim 3, is characterized in that: the radius ratio of described top arc and bottom circular arc is 2:1.
5. special-shaped falling film type evaporation pipe according to claim 3, is characterized in that: described top arc is rough surface with the outer surface essence grinding process of the plane being connected two circular arcs.
6. special-shaped falling film type evaporation pipe according to claim 1, is characterized in that: the inner surface of described special-shaped falling film type evaporation pipe is provided with screw thread.
7. special-shaped falling film type evaporation pipe according to claim 1, is characterized in that: described deflector height is between 1cm ~ 2cm.
8. special-shaped falling film type evaporation pipe according to claim 1, is characterized in that: described cloth liquid tooth, and tooth depth is between 1cm ~ 2cm, and space width is 2cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510153638.3A CN104784949A (en) | 2015-04-02 | 2015-04-02 | Special-shaped falling-film evaporation tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510153638.3A CN104784949A (en) | 2015-04-02 | 2015-04-02 | Special-shaped falling-film evaporation tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104784949A true CN104784949A (en) | 2015-07-22 |
Family
ID=53550414
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510153638.3A Pending CN104784949A (en) | 2015-04-02 | 2015-04-02 | Special-shaped falling-film evaporation tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104784949A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108721926A (en) * | 2018-06-04 | 2018-11-02 | 东南大学 | A kind of Falling Film Evaporator of Horizontal Tube |
| CN109999522A (en) * | 2019-03-27 | 2019-07-12 | 合肥艾普拉斯环保科技有限公司 | A kind of cloth liquid structure of distillation equipment |
| CN113137786A (en) * | 2021-05-31 | 2021-07-20 | 西安建筑科技大学 | Membrane tube bank falling film evaporation tube bundle |
| CN114504931A (en) * | 2020-11-16 | 2022-05-17 | 中国石油化工股份有限公司 | Hydrogen sulfide absorption device and absorption method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02180601A (en) * | 1988-11-29 | 1990-07-13 | Technol Res Assoc Super Heat Pump Energ Accum Syst | Falling liquid film type evaporator |
| CN101274785A (en) * | 2007-03-27 | 2008-10-01 | 张建城 | Falling film evaporator with ring-shaped corrugated tube for seawater desalination |
| CN202237299U (en) * | 2011-09-06 | 2012-05-30 | 华南理工大学 | Sugar solution evaporator employing rotational flow sheet inserted sharp expansion and accelerated flow converging-diverging tube |
| CN102641601A (en) * | 2011-02-16 | 2012-08-22 | 俞天翔 | In-tube auto-cleaning antiscale falling-film evaporation device |
| CN203798227U (en) * | 2014-03-26 | 2014-08-27 | 广州市心德实业有限公司 | Heat exchanging tube and heat exchanging structure for horizontal-tube falling film evaporator |
| CN204543595U (en) * | 2015-04-02 | 2015-08-12 | 沈阳航空航天大学 | A kind of special-shaped falling film type evaporation pipe |
-
2015
- 2015-04-02 CN CN201510153638.3A patent/CN104784949A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02180601A (en) * | 1988-11-29 | 1990-07-13 | Technol Res Assoc Super Heat Pump Energ Accum Syst | Falling liquid film type evaporator |
| CN101274785A (en) * | 2007-03-27 | 2008-10-01 | 张建城 | Falling film evaporator with ring-shaped corrugated tube for seawater desalination |
| CN102641601A (en) * | 2011-02-16 | 2012-08-22 | 俞天翔 | In-tube auto-cleaning antiscale falling-film evaporation device |
| CN202237299U (en) * | 2011-09-06 | 2012-05-30 | 华南理工大学 | Sugar solution evaporator employing rotational flow sheet inserted sharp expansion and accelerated flow converging-diverging tube |
| CN203798227U (en) * | 2014-03-26 | 2014-08-27 | 广州市心德实业有限公司 | Heat exchanging tube and heat exchanging structure for horizontal-tube falling film evaporator |
| CN204543595U (en) * | 2015-04-02 | 2015-08-12 | 沈阳航空航天大学 | A kind of special-shaped falling film type evaporation pipe |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108721926A (en) * | 2018-06-04 | 2018-11-02 | 东南大学 | A kind of Falling Film Evaporator of Horizontal Tube |
| CN108721926B (en) * | 2018-06-04 | 2021-04-27 | 东南大学 | Horizontal pipe falling film evaporator |
| CN109999522A (en) * | 2019-03-27 | 2019-07-12 | 合肥艾普拉斯环保科技有限公司 | A kind of cloth liquid structure of distillation equipment |
| CN109999522B (en) * | 2019-03-27 | 2024-01-26 | 合肥艾普拉斯环保科技有限公司 | Liquid distribution structure of distillation equipment |
| CN114504931A (en) * | 2020-11-16 | 2022-05-17 | 中国石油化工股份有限公司 | Hydrogen sulfide absorption device and absorption method |
| CN114504931B (en) * | 2020-11-16 | 2023-06-13 | 中国石油化工股份有限公司 | Hydrogen sulfide absorbing device and absorbing method |
| CN113137786A (en) * | 2021-05-31 | 2021-07-20 | 西安建筑科技大学 | Membrane tube bank falling film evaporation tube bundle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204543595U (en) | A kind of special-shaped falling film type evaporation pipe | |
| CN104784949A (en) | Special-shaped falling-film evaporation tube | |
| CN205690935U (en) | Shell-and-tube heat exchanger based on segmental baffle | |
| CN102657948A (en) | Liquid distributor and vertical tube falling film evaporator comprising same | |
| CN202666436U (en) | Liquid distributing device and falling-film evaporator provided with the same | |
| CN203436838U (en) | Film distributor of vertical type falling-film evaporator | |
| CN102288060A (en) | Film falling evaporation heat exchange pipe with fins made from silk screen | |
| CN104236350A (en) | Vertical type evaporator | |
| CN104406334A (en) | Sprinkling falling film type evaporator and liquid level control method thereof | |
| CN100427870C (en) | Multi-phase flow unsaturated in-tube evaporation direct cooling device | |
| CN204723782U (en) | Little temperature difference shell journey becomes the no baffle plate high-efficiency energy-saving evaporator in space | |
| CN200941018Y (en) | Vertical internal tube unsaturated evaporation direct cooling device | |
| CN2922984Y (en) | Boiling-point feeding falling-film steaming liquid distributor | |
| CN202692733U (en) | Fin condensing pipe provided with liquid absorption core body | |
| CN102000438A (en) | Horizontal elliptical tube falling film evaporator/condenser | |
| CN204582582U (en) | A kind of shell side steam is containing the falling film evaporator of incoagulable gas | |
| CN207266813U (en) | A kind of vapor absorption tower and its water distribution disk | |
| CN205164163U (en) | Falling film evaporation ware for gas field water | |
| CN106267868A (en) | A kind of vertical tube falling vaporizer | |
| CN202582322U (en) | Falling film evaporation heat exchange tube provided with axial spiral slots on outer surface | |
| CN102636068B (en) | Asymmetric fin condenser pipe | |
| CN204219807U (en) | Falling film evaporator | |
| CN204380291U (en) | A kind of falling film evaporator cone hat type liquid distributing board | |
| CN201081579Y (en) | Column tube type scaling-free fluid heat exchanger | |
| CN210674258U (en) | Horizontal falling film liquid distributor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150722 |