CN203447787U - Liquid distributor of falling film evaporation device - Google Patents
Liquid distributor of falling film evaporation device Download PDFInfo
- Publication number
- CN203447787U CN203447787U CN201320486930.3U CN201320486930U CN203447787U CN 203447787 U CN203447787 U CN 203447787U CN 201320486930 U CN201320486930 U CN 201320486930U CN 203447787 U CN203447787 U CN 203447787U
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- falling film
- liquid distributor
- film evaporation
- liquid
- cylindrical shell
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Abstract
The utility model relates to a liquid distributor of a falling film evaporation device. The liquid distributor contains a main body of the liquid distributor, which is connected with a heat exchange pipe of the falling film evaporation device, the main body of the liquid distributor is constituted by a cylinder, and a slit surrounding layer constituted by inclined rectangular slits is uniformly distributed along the circumferential direction of the cylinder. Compared with the prior art, since the slit surrounding layer constituted by the inclined rectangular slits is uniformly distributed along the circumferential direction of the cylinder, when material liquid enters into the cylinder of the liquid distributor through the inclined rectangular slits in the slit surrounding layer, as the slits are designed in an inclined manner, the material liquid can flow into the cylinder along an inclined surface of the inclined rectangular slits, form a rotational flow state in the cylinder and further flow into the heat exchange pipe of the falling film evaporation device. As the material liquid flows into the heat exchange pipe of the falling film evaporation device in the rotational flow state, the area by which the material liquid flows can be increased, a liquid film with uniform thickness is formed on the pipe wall, and the influence on an evaporation effect because part of a heat transfer surface on the pipe wall of the heat exchange pipe is not moisturized by the material liquid is further avoided.
Description
Technical field
The utility model relates to a kind of falling film evaporation equipment, particularly a kind of liquid distributor of falling film evaporation equipment.
Background technology
Falling film evaporator, as a kind of energy-efficient evaporation equipment, is widely used in the fields such as chemical industry, pharmacy and food.Material is in filming device flows into the heat exchanger tube of falling film evaporator, and material, under self gravitation effect, is membranaceous along the inside pipe wall of filming device and flows down, and flows into falling film evaporator and evaporate.
Liquid distributor cloth fluidity can quality, directly have influence on production capacity and the operating characteristics of falling film evaporator.Tradition overflow type liquid distributor, adopt liquid distributor wall perforate mode, feed liquid enters after heat exchanger tube through having the liquid distributor of square hole or circular hole, by heat exchanger tube, evaporated, because the traditional type of leaving over liquid distributor is inhomogeneous when feed liquid distributes, thereby cause heat exchanger tube on falling film evaporation equipment to cause the phenomenon of local cutout or " dry blowing ".Particularly, when reduction of feed volume is larger, feed liquid cannot flow into liquid distributor inside by square hole and the circular hole of liquid distributor, but directly from the upper end import of liquid distributor, flows in liquid distributor, causes evenly cloth liquid, reduces the performance of cloth liquid.
And although having solved feed liquid flows directly in liquid distributor from the import of liquid distributor upper end, there is the shortcoming that in evaporimeter upper cover, liquid level is uncontrollable, pressure drop is larger in the structure of setting up top cover in liquid distributor upper port.
Utility model content
The purpose of this utility model is to provide a kind of liquid distributor of falling film evaporation equipment, when avoiding feed liquid to enter heat exchanger tube, causes feed liquid phenomenon pockety in heat exchanger tube.
To achieve these goals, the utility model has designed a kind of liquid distributor of falling film evaporation equipment, comprise the liquid distributor main body being connected with falling film evaporation equipment heat exchanger tube, described liquid distributor main body consists of cylindrical shell, and described cylindrical shell is uniformly distributed circumferentially the line of rabbet joint that consists of the inclined rectangle line of rabbet joint around layer.
Embodiment of the present utility model compared with the existing technology, because cylindrical shell is uniformly distributed circumferentially the line of rabbet joint that consists of the inclined rectangle line of rabbet joint around layer, so when feed liquid enters in the cylindrical shell of liquid distributor around the inclined rectangle line of rabbet joint on layer by the line of rabbet joint, because the line of rabbet joint is inclined design, so feed liquid can be taken advantage of a situation and flow in cylindrical shell along the inclined plane of the inclined rectangle line of rabbet joint, the state that forms eddy flow in cylindrical shell flow in the heat exchanger tube of falling film evaporation equipment.The state that is into eddy flow due to feed liquid flow in the heat exchanger tube of falling film evaporation equipment, so can strengthen the area that feed liquid is flowed through, thereby while guaranteeing that feed liquid flows in heat exchanger tube, make to form on its tube wall the liquid film of uniform thickness, thereby avoided there is part heat-transfer area not by the effect of the moistening impact evaporation of feed liquid on the tube wall of heat exchanger tube.
In addition, the described line of rabbet joint is at least provided with two groups from the bottom to top around layer.Because the line of rabbet joint is provided with many groups around layer, thus when liquid measure hour, feed liquid can flow into inner barrel from the inclined rectangle line of rabbet joint of the cylindrical shell bottom, and declines along cylinder inboard wall eddy flow.When liquid measure is larger, because the line of rabbet joint of the bottom is limited around the flow of layer, thus cause part feed liquid around laminar flow, to enter inner barrel from the line of rabbet joint of last layer, and still protect along cylinder inboard wall eddy flow and decline.So by many group lines of rabbet joint being set around layer, can avoid feed liquid directly to flow in cylindrical shell from the upper end import of cylindrical shell, cause evenly cloth liquid, reduce the performance of cloth liquid.
And described every layer of line of rabbet joint is around at least including two inclined rectangle lines of rabbet joint in layer.Because every layer of line of rabbet joint is around having a plurality of inclined rectangle lines of rabbet joint in layer, so in the time of can further guaranteeing that feed liquid flows in cylindrical shell, be that eddy flow declines.
Further, the inside and outside footpath of described cylindrical shell, respectively measure-alike with the inside and outside footpath of described falling film evaporation equipment heat exchanger tube.Measure-alike due to the inside and outside footpath of cylindrical shell and the inside and outside footpath of falling film evaporation equipment heat exchanger tube, so when feed liquid flows into the heat exchanger tube of falling film evaporation equipment by cylindrical shell, can further guarantee continuity and ductility when feed liquid flows, better make the uniformity of thickness of liquid film controlled.
In addition, the liquid distributor of described falling film evaporation equipment, also comprises the cover plate being arranged in described cylindrical shell upper end open, the opening of cylindrical shell upper end described in described cover closure.Because the upper end open at cylindrical shell arranges cover plate, even when feed liquid has little time to flow in cylindrical shell from the inclined rectangle line of rabbet joint, can organize feed liquid to flow directly in liquid distributor from the import of liquid distributor upper end by cover plate.
Accompanying drawing explanation
Fig. 1 is the structural representation of liquid distributor of the falling film evaporation equipment of the utility model the first embodiment;
Fig. 2 is the front view of Fig. 1;
Fig. 3 is the side view of Fig. 1;
Fig. 4 is the liquid distributor of the utility model the firstth embodiment use schematic diagram in falling film evaporation equipment.
The specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, each embodiment of the present utility model is explained in detail.Yet, persons of ordinary skill in the art may appreciate that in each embodiment of the utility model, in order to make reader understand the application better, many ins and outs have been proposed.But, even without these ins and outs and the many variations based on following embodiment and modification, also can realize each claim of the application technical scheme required for protection.
The first embodiment of the present utility model relates to a kind of liquid distributor of falling film evaporation equipment, as shown in Figure 1 to Figure 3, comprise the liquid distributor main body being connected with falling film evaporation equipment heat exchanger tube, the liquid distributor main body of present embodiment consists of cylindrical shell 1, and cylindrical shell 1 is uniformly distributed circumferentially the line of rabbet joint that consists of the inclined rectangle line of rabbet joint 6 around layer.
In addition, as shown in Figure 4, in the present embodiment, falling film evaporation equipment comprises end socket 2, be arranged on one-level pre-distributor 3 and secondary pre-distributor 4 in end socket 2, also comprise for sealing the tube sheet 5 of public attention 2.In the present embodiment, feed liquid is to enter one-level pre-distributor 3 by end socket 2, then by one-level pre-distributor 3, enter secondary pre-distributor 4, and be deposited on tube sheet 5 by secondary pre-distributor 4, when the feed liquid on tube sheet 5 is deposited to certain water level, can from the inclined rectangle line of rabbet joint 6 of cylindrical shell 1, flow into the inside of cylindrical shells 1, finally flow in the heat exchanger tube of falling film evaporation equipment and evaporate.
In the present embodiment, because cylindrical shell 1 is uniformly distributed circumferentially the line of rabbet joint that consists of the inclined rectangle line of rabbet joint 6 around layer, so when feed liquid enters the cylindrical shell 1 of liquid distributor when interior by the line of rabbet joint around the inclined rectangle line of rabbet joint 6 on layer, because the line of rabbet joint is inclined design, so feed liquid can be taken advantage of a situation and flow in cylindrical shell 1 along the inclined plane of the inclined rectangle line of rabbet joint 6, at the state of the interior formation eddy flow of cylindrical shell 1, flow in the heat exchanger tube of falling film evaporation equipment.The state that is into eddy flow due to feed liquid flow in the heat exchanger tube of falling film evaporation equipment, so can strengthen the area that feed liquid is flowed through, thereby while guaranteeing that feed liquid flows in heat exchanger tube, make to form on its tube wall the liquid film of uniform thickness, thereby avoided there is part heat-transfer area not by the effect of the moistening impact evaporation of feed liquid on the tube wall of heat exchanger tube.
In addition, in the present embodiment, the line of rabbet joint is provided with three groups from the bottom to top around layer.Because the line of rabbet joint is provided with many groups around layer, thus when liquid measure hour, feed liquid can flow into cylindrical shell 1 inside from the inclined rectangle line of rabbet joint 6 of cylindrical shell 1 bottom, and declines along cylindrical shell 1 inwall eddy flow.And when liquid measure is larger, because the line of rabbet joint of the bottom is limited around the flow of layer, thus cause having part feed liquid around laminar flow, to enter cylindrical shell 1 inside from the line of rabbet joint of last layer, and still protect along cylinder inboard wall eddy flow and decline.So by many group lines of rabbet joint being set around layer, can avoid feed liquid directly to flow in cylindrical shell from the upper end import of cylindrical shell, cause evenly cloth liquid, reduce the performance of cloth liquid.
And in the present embodiment, every layer of line of rabbet joint is around having three inclined rectangle lines of rabbet joint 6 of bag in layer.Because every layer of line of rabbet joint is around having a plurality of inclined rectangle lines of rabbet joint in layer, so in the time of can further guaranteeing that feed liquid flows in cylindrical shell, be that eddy flow declines.
The second embodiment of the present utility model relates to a kind of liquid distributor of falling film evaporation equipment, the second embodiment is on the basis of the first embodiment, to have done further improvement, main improvement is: as shown in Figure 4, in the present embodiment, the inside and outside footpath of cylindrical shell 1, respectively measure-alike with the inside and outside footpath of falling film evaporation equipment heat exchanger tube.Measure-alike due to the inside and outside footpath of cylindrical shell 1 and the inside and outside footpath of falling film evaporation equipment heat exchanger tube, so when feed liquid flows into the heat exchanger tube of falling film evaporation equipment by cylindrical shell, can further guarantee continuity and ductility when feed liquid flows, better make the uniformity of thickness of liquid film controlled.
In addition, it is worth mentioning that the liquid distributor of the falling film evaporation equipment of present embodiment also comprises the cover plate being arranged in cylindrical shell 1 upper end open, by the opening of cover closure cylindrical shell upper end.Because the upper end open at cylindrical shell 1 arranges cover plate, even when feed liquid has little time to flow in cylindrical shells from the inclined rectangle line of rabbet joint 6, can stop feed liquid to flow directly in liquid distributor from the import of liquid distributor upper end by cover plate, inhomogeneous while preventing cloth liquid.
Persons of ordinary skill in the art may appreciate that the respective embodiments described above are to realize specific embodiment of the utility model, and in actual applications, can to it, do various changes in the form and details, and do not depart from spirit and scope of the present utility model.
Claims (5)
1. a liquid distributor for falling film evaporation equipment, comprises the liquid distributor main body being connected with falling film evaporation equipment heat exchanger tube, and described liquid distributor main body consists of cylindrical shell, it is characterized in that: described cylindrical shell is uniformly distributed circumferentially the line of rabbet joint that consists of the inclined rectangle line of rabbet joint around layer.
2. the liquid distributor of falling film evaporation equipment according to claim 1: the described line of rabbet joint is at least provided with two groups from the bottom to top around layer.
3. the liquid distributor of falling film evaporation equipment according to claim 1, is characterized in that: described every layer of line of rabbet joint is around at least including two inclined rectangle lines of rabbet joint in layer.
4. according to the liquid distributor described in any one in claims 1 to 3, it is characterized in that: the inside and outside footpath of described cylindrical shell, respectively measure-alike with the inside and outside footpath of described falling film evaporation equipment heat exchanger tube.
5. according to the liquid distributor described in any one in claims 1 to 3, it is characterized in that: the liquid distributor of described falling film evaporation equipment, also comprises the cover plate being arranged in described cylindrical shell upper end open, the opening of cylindrical shell upper end described in described cover closure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320486930.3U CN203447787U (en) | 2013-08-09 | 2013-08-09 | Liquid distributor of falling film evaporation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320486930.3U CN203447787U (en) | 2013-08-09 | 2013-08-09 | Liquid distributor of falling film evaporation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203447787U true CN203447787U (en) | 2014-02-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320486930.3U Expired - Fee Related CN203447787U (en) | 2013-08-09 | 2013-08-09 | Liquid distributor of falling film evaporation device |
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| CN (1) | CN203447787U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105797410A (en) * | 2016-04-14 | 2016-07-27 | 中国科学院工程热物理研究所 | Multi-channel outside-pipe falling film liquid distributor and heat exchange device |
| CN106267869A (en) * | 2015-05-13 | 2017-01-04 | 中国石油化工股份有限公司 | The falling film evaporator of lateral charging |
| 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 |
| CN112028156A (en) * | 2020-09-28 | 2020-12-04 | 江苏固环环境科技有限公司 | Overflow weir type distributor for thin-layer drying equipment |
| CN117695689A (en) * | 2024-02-06 | 2024-03-15 | 天津鲁华泓锦新材料科技有限公司 | Falling film evaporator |
| CN112028156B (en) * | 2020-09-28 | 2024-04-26 | 江苏固环环境科技有限公司 | Overflow weir type distributing device for thin layer drying equipment |
-
2013
- 2013-08-09 CN CN201320486930.3U patent/CN203447787U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106267869A (en) * | 2015-05-13 | 2017-01-04 | 中国石油化工股份有限公司 | The falling film evaporator of lateral charging |
| CN106267869B (en) * | 2015-05-13 | 2018-06-15 | 中国石油化工股份有限公司 | The falling film evaporator laterally fed |
| CN105797410A (en) * | 2016-04-14 | 2016-07-27 | 中国科学院工程热物理研究所 | Multi-channel outside-pipe falling film liquid distributor and heat exchange device |
| CN105797410B (en) * | 2016-04-14 | 2018-02-16 | 中国科学院工程热物理研究所 | A kind of multichannel extratubal falling film liquid distributor and heat-exchange apparatus |
| 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 |
| CN112028156A (en) * | 2020-09-28 | 2020-12-04 | 江苏固环环境科技有限公司 | Overflow weir type distributor for thin-layer drying equipment |
| CN112028156B (en) * | 2020-09-28 | 2024-04-26 | 江苏固环环境科技有限公司 | Overflow weir type distributing device for thin layer drying equipment |
| CN117695689A (en) * | 2024-02-06 | 2024-03-15 | 天津鲁华泓锦新材料科技有限公司 | Falling film evaporator |
| CN117695689B (en) * | 2024-02-06 | 2024-04-16 | 天津鲁华泓锦新材料科技有限公司 | Falling film evaporator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 |