CN204380291U - A kind of falling film evaporator cone hat type liquid distributing board - Google Patents
A kind of falling film evaporator cone hat type liquid distributing board Download PDFInfo
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- CN204380291U CN204380291U CN201520020297.8U CN201520020297U CN204380291U CN 204380291 U CN204380291 U CN 204380291U CN 201520020297 U CN201520020297 U CN 201520020297U CN 204380291 U CN204380291 U CN 204380291U
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- liquid
- gear pipe
- cap
- film evaporator
- falling film
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Abstract
The utility model discloses a kind of falling film evaporator cone hat type liquid distributing board, solve the falling film evaporator distribution grid stability in use of prior art and the problem of distributing homogeneity difference, it distribution hole comprising distribution grid body and be located on distribution grid body, the liquid that is subject to also comprised in hollow cone structure bores cap, described distribution hole is made up of the path section be connected and large footpath section from top to bottom, intermediate incline is provided with between the section of described path Duan Yu great footpath, this intermediate incline forms water conservancy diversion inclined-plane, the upper end open of path section is set to flaring structure, and the outside of flaring structure is provided with gear pipe, described gear pipe lower end is fixedly connected with distribution grid body, gear pipe top with bore cap by liquid and be fixedly connected with, and gear pipe and bore between cap be provided with gap by liquid, this gap forms overfall.It is simple that the utility model has structure, the beneficial effects such as stability in use, distributing homogeneity and film-formation result are good.
Description
Technical field
The utility model relates to a kind of liquid distribution device, especially relates to a kind of falling film evaporator cone hat type liquid distributing board.
Background technology
In existing falling film evaporator, feed liquid adds from top, after distribution apparatus (being generally distribution grid) distribution in uniform distribution to heating clamber in heat exchanger tube in, under the effect of gravity and air-flow, flow from top to bottom along heat exchanger tube inwall in evenly membranaceous, in flow process, heat vaporized by shell side heat medium, the separation chamber that the steam produced and liquid phase enter evaporimeter jointly carries out vapor-liquid separation, thus realizes multiple-effect operation.
Distribution grid is the vitals of falling film evaporator, but existing distribution grid often there will be phenomenon pockety, causes film-formation result in heat exchanger tube poor, even occurs " dry wall " phenomenon, thus affect evaporation effect time serious.
Such as, Authorization Notice No.: CN201368685Y, authorized announcement date on December 23rd, 2009, name is called: disclose a kind of distribution grid in the Chinese patent of falling film evaporator, this distribution grid is fixed on upper perforated plate, distribution grid has spray hole, and around every root heat exchanger tube, uniform spray hole 3n or 4n is individual, and n is 1 ~ 6.Its weak point is, this distribution grid be on spray hole (i.e. distribution hole) be still conventional circular port, feed liquid easily forms liquid film under capillary effect in spray hole, the resistance that feed liquid is passed through can be increased, and make by the reduction of feed volume of spray hole unstable, cause stability in use and distributing homogeneity poor.
Utility model content
The utility model is the problem in order to the falling film evaporator distribution grid stability in use and distributing homogeneity difference solving prior art, provide a kind of structure simple, the falling film evaporator cone hat type liquid distributing board that stability in use, distributing homogeneity and film-formation result are good.
To achieve these goals, the utility model is by the following technical solutions:
A kind of falling film evaporator cone hat type liquid distributing board, the distribution hole comprising distribution grid body and be located on distribution grid body, the liquid that is subject to also comprised in hollow cone structure bores cap, described distribution hole is made up of the path section be connected and large footpath section from top to bottom, intermediate incline is provided with between the section of described path Duan Yu great footpath, this intermediate incline forms water conservancy diversion inclined-plane, the upper end open of path section is set to flaring structure, and the outside of flaring structure is provided with gear pipe, described gear pipe lower end is fixedly connected with distribution grid body, gear pipe top with bore cap by liquid and be fixedly connected with, and gear pipe and bore between cap be provided with gap by liquid, this gap forms overfall.The speed that can slow down feed liquid by liquid cone cap in the utility model, feed liquid also can be avoided directly to enter film forming in heat exchanger tube by distribution hole, cause the decrease speed that to flow inside heat exchanger tube very fast, thus cause film-formation result and the poor problem of uniformity, after feed liquid in the utility model is accumulated in the space between gear pipe, distribution hole is entered by overflow through overfall, effectively can avoid the generation of liquid film, and make the reduction of feed volume entering distribution hole keep stable and consistent, stability in use and distributing homogeneity good, in addition, distribution hole in the utility model is made up of the path section be connected and large footpath section from top to bottom, when feed liquid enters bigger diameter end from path section, pressure reduces, the surface tension of material liquid can be made to discharge, greatly improve the distributing homogeneity of material liquid.
As preferably, the top of described gear pipe lateral surface is circumferentially fixed with some connection straps in interval, connection strap upper end with bore cap by liquid and be fixedly connected with, form overfall by the gap between liquid cone cap, connection strap and gear pipe.
As preferably, the internal diameter of described gear pipe and the bigger diameter end diameter of flaring structure suitable.
As preferably, describedly coaxially to arrange with distribution hole by liquid cone cap, gear pipe.
As preferably, the length of described distribution hole small diameter Duan Yu great footpath section is than being 1:2 ~ 2.5.
Therefore, the utility model has following beneficial effect:
(1) liquid that is subject to had in hollow cone structure bores cap, the speed of feed liquid can be slowed down by liquid cone cap, feed liquid also can be avoided directly to enter film forming in heat exchanger tube by distribution hole, cause the decrease speed that to flow inside heat exchanger tube very fast, thus cause film-formation result and the poor problem of uniformity;
(2) after feed liquid is accumulated in the space between gear pipe, enters distribution hole through overfall by overflow, effectively can avoid the generation of liquid film, and the reduction of feed volume making to enter distribution hole keeps stable and consistent, stability in use and distributing homogeneity good;
(3) distribution hole is made up of the path section be connected and large footpath section from top to bottom, and when feed liquid enters bigger diameter end from path section, pressure reduces, and the surface tension of material liquid can be made to discharge, and greatly improves the distributing homogeneity of material liquid.
Accompanying drawing explanation
Fig. 1 is a kind of sectional view of the present utility model.
In figure: distribution grid body 1, by liquid cone cap 2, path section 3, large footpath section 4, flaring structure 5, gear pipe 6, water conservancy diversion inclined-plane 7, overfall 8, connection strap 9.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
A kind of falling film evaporator cone hat type liquid distributing board as shown in Figure 1, comprise distribution grid body 1, be located at distribution hole on distribution grid body and in hollow cone structure by liquid cone cap 2, distribution hole is made up of the path section 3 be connected and large footpath section 4 from top to bottom, the length of path Duan Yu great footpath section is than being 1:2.5, and be provided with intermediate incline between the section of path Duan Yu great footpath, this intermediate incline forms water conservancy diversion inclined-plane 7, the upper end open of path section is set to flaring structure 5, the outside of flaring structure is provided with gear pipe 6, the bigger diameter end diameter of the gear internal diameter of pipe and flaring structure is suitable, gear pipe lower end is fixedly connected with distribution grid body, the top of gear pipe lateral surface is circumferentially fixed with three connection straps 9 in interval, connection strap upper end with bore cap by liquid and be fixedly connected with, by liquid cone cap, connection strap and the gap kept off between pipe form overfall 8, by liquid cone cap, gear pipe is coaxially arranged with distribution hole.
Running of the present utility model is: when feed liquid adds fashionable from falling film evaporator top, feed liquid can drop on by liquid cone cap on and along by liquid cone cap surface slowly drop down onto distribution grid body surface, and be accumulated between gear pipe gradually, feed liquid between gear pipe builds up to (when namely feed liquid height reaches overfall height) to a certain degree, feed liquid enters distribution hole through overfall by overflow, the generation of liquid film effectively can not only be avoided by overflow, and make the reduction of feed volume entering distribution hole keep stable and consistent, when the feed liquid entering distribution hole enters bigger diameter end from path section, pressure reduces, the surface tension of material liquid can be made to discharge, greatly improve the distributing homogeneity of material liquid, inwall finally along large footpath section carries out heat exchange in the even membranaceous heat exchanger tube that enters.
The above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, every above embodiment is done according to technical spirit of the present utility model any simple modification, equivalent variations and modification, all belong in the scope of technical solutions of the utility model.
Claims (5)
1. a falling film evaporator cone hat type liquid distributing board, the distribution hole comprising distribution grid body (1) and be located on distribution grid body, be characterised in that, the liquid that is subject to also comprised in hollow cone structure bores cap (2), described distribution hole is made up of the path section (3) be connected and large footpath section (4) from top to bottom, intermediate incline is provided with between the section of described path Duan Yu great footpath, this intermediate incline forms water conservancy diversion inclined-plane (7), the upper end open of path section is set to flaring structure (5), and the outside of flaring structure is provided with gear pipe (6), described gear pipe lower end is fixedly connected with distribution grid body, gear pipe top with bore cap by liquid and be fixedly connected with, and gear pipe and bore between cap be provided with gap by liquid, this gap forms overfall (8).
2. a kind of falling film evaporator cone hat type liquid distributing board according to claim 1, it is characterized in that, the top of described gear pipe lateral surface is circumferentially fixed with some connection straps (9) in interval, connection strap upper end with bore cap by liquid and be fixedly connected with, form overfall by the gap between liquid cone cap, connection strap and gear pipe.
3. a kind of falling film evaporator cone hat type liquid distributing board according to claim 1, is characterized in that, the internal diameter of described gear pipe and the bigger diameter end diameter of flaring structure suitable.
4. a kind of falling film evaporator according to claim 1 bores hat type liquid distributing board, it is characterized in that, described liquid cone cap, gear pipe and the distribution hole of being subject to coaxially is arranged.
5. a kind of falling film evaporator cone hat type liquid distributing board according to claim 1, is characterized in that, the length of described distribution hole small diameter Duan Yu great footpath section is than being 1:2 ~ 2.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520020297.8U CN204380291U (en) | 2015-01-13 | 2015-01-13 | A kind of falling film evaporator cone hat type liquid distributing board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520020297.8U CN204380291U (en) | 2015-01-13 | 2015-01-13 | A kind of falling film evaporator cone hat type liquid distributing board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204380291U true CN204380291U (en) | 2015-06-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520020297.8U Expired - Fee Related CN204380291U (en) | 2015-01-13 | 2015-01-13 | A kind of falling film evaporator cone hat type liquid distributing board |
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| CN (1) | CN204380291U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583127A (en) * | 2017-02-14 | 2017-04-26 | 中国中元国际工程有限公司 | Spraying liquid arrangement sprayer assembly for cold and heat accumulation 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 |
-
2015
- 2015-01-13 CN CN201520020297.8U patent/CN204380291U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583127A (en) * | 2017-02-14 | 2017-04-26 | 中国中元国际工程有限公司 | Spraying liquid arrangement sprayer assembly for cold and heat accumulation 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 |
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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 |
Granted publication date: 20150610 Termination date: 20170113 |
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| CF01 | Termination of patent right due to non-payment of annual fee |