阅读说明：本技术 一种可产生蒸汽高温换热器 (High-temperature heat exchanger capable of generating steam ) 是由 何世辉 张建军 冯自平 于 2021-06-23 设计创作，主要内容包括：本发明公开了一种可产生蒸汽高温换热器,涉及高温加热换热技术,其包括：壳体、过热管组、主换热管组和蒸汽包,壳体一端设有分气腔和集液腔,所述分气腔安装有高温工质进气管；过热管组设置在所述壳体内部,且所述过热管组的入口端连接所述分气腔；主换热管组设置在所述壳体内部,且所述主换热管组的入口端连接所述过热管组的出口端,蒸汽包连通安装在所述壳体上部,所述壳体下部还设置有对应于所述蒸汽包的进水管,所述蒸汽包内设置有汽水分离隔板,本发明利用主换热管组紧密的布置和合适管径选择,具有换热效率高、热阻小,结构紧凑、体积小、易于拆洗和维护等优点。(The invention discloses a high-temperature heat exchanger capable of generating steam, relating to the high-temperature heating and heat exchanging technology, comprising: the steam-assisted heat exchanger comprises a shell, a superheating pipe set, a main heat exchange pipe set and a steam bag, wherein a gas distribution cavity and a liquid collection cavity are arranged at one end of the shell, and a high-temperature working medium inlet pipe is arranged in the gas distribution cavity; the overheating pipe set is arranged inside the shell, and the inlet end of the overheating pipe set is connected with the gas distribution cavity; the steam-water separation device comprises a shell, a main heat exchange tube set, a steam bag, a water inlet tube, a steam bag and a steam-water separation baffle plate, wherein the main heat exchange tube set is arranged in the shell, the inlet end of the main heat exchange tube set is connected with the outlet end of the superheating tube set, the steam bag is communicated and installed on the upper part of the shell, the lower part of the shell is also provided with the water inlet tube corresponding to the steam bag, and the steam bag is internally provided with the steam-water separation baffle plate.)

1. A high temperature heat exchanger capable of generating steam, comprising:

the device comprises a shell, a gas distribution cavity and a liquid collection cavity, wherein one end of the shell is provided with the gas distribution cavity and the liquid collection cavity, and the gas distribution cavity is provided with a high-temperature working medium inlet pipe;

the overheating pipe set is arranged inside the shell, and the inlet end of the overheating pipe set is connected with the gas distribution cavity;

the main heat exchange tube set is arranged inside the shell, the inlet end of the main heat exchange tube set is connected with the outlet end of the overheating tube set, and the outlet end of the main heat exchange tube set is connected with the liquid collecting cavity; the main heat exchange tube group is positioned below the overheating tube group; and the number of the first and second groups,

the steam bag is communicated and mounted on the upper portion of the shell, a water inlet pipe corresponding to the steam bag is further arranged on the lower portion of the shell, a steam-water separation partition plate is arranged in the steam bag, the steam bag is provided with a steam outlet, a steam-water separator is connected to an outlet in the top of the steam bag, an automatic drain valve is connected to the lower portion of the steam-water separator, an outlet end of the automatic drain valve is connected with a drain water return pipe, and an outlet of the drain water return pipe is connected to the middle lower portion of the shell; wherein the content of the first and second substances,

the heat exchanger includes:

a first circulation loop of the phase change working medium: the phase change working medium sequentially enters the gas distribution cavity, the overheating pipe set, the main heat exchange pipe set and the liquid collection cavity from the top;

second circulation loop of cooling water: a water inlet pipe, a shell inner cavity, the upper part of the shell inner cavity, a steam pocket, a steam-water separator, an automatic drain valve or a steam outlet.

2. The high-temperature heat exchanger capable of generating steam according to claim 1, wherein the cross section of the steam-water separation partition plate is in an inverted V shape, and the steam-water separation partition plate divides the steam pocket into an upper cavity and a lower cavity.

3. A high temperature heat exchanger capable of generating steam as recited in claim 1 wherein a tube set fixing bracket is provided on the outside of the lower and middle inner portions of said shell.

4. The high-temperature heat exchanger capable of generating steam according to claim 1, further comprising a liquid level controller, wherein the upper part and the lower part of the shell are respectively connected with the upper interface and the lower interface of the liquid level controller.

5. The high temperature heat exchanger capable of generating steam of claim 1, wherein the bottom of the liquid collection chamber is provided with a liquid pipe outlet.

6. The high-temperature heat exchanger capable of generating steam according to claim 1, wherein a high-temperature working medium inlet pipe is arranged at the top of the gas distribution chamber.

Technical Field

The invention relates to a high-temperature heating heat exchange technology, in particular to a high-temperature heat exchanger capable of generating steam, which can realize boiling heat transfer and direct recycling of vapor-liquid separation.

Background

In heating and heat exchange processes in the fields of food, pharmacy, chemical industry and the like, the heat exchangers which are widely applied at present are tube type heat exchangers and plate type heat exchangers. The heat exchanger has the advantages of simple structure, convenient processing, wide application in low-temperature heat exchange and the like, but also has the defects of low heat exchange efficiency, large volume, incapability of automatically separating steam from water during high-temperature steam generation, incapability of directly recycling the separated high-temperature water and the like during high-temperature boiling heat exchange, and in order to overcome the defects, people increase the research of the high-temperature heat exchanger capable of directly generating steam.

The existing shell and tube heat exchanger and plate heat exchanger can only be used for water heating and heat exchange at the temperature of less than 100 ℃, when the heat exchanger is applied to a process of directly heating steam generated at the temperature of more than 100 ℃, heating water can continuously generate evaporation phase change in the flowing process, a large amount of water vapor is generated, the water and the water vapor are mixed together to flow, and because the water vapor can not be discharged in time, more and more sac-shaped bubbles are condensed, the heat exchange area of the water and the pipe wall is reduced, when the superheated steam is directly generated, the steam and the water can be discharged at the same time, and the requirement of directly generating the steam can not be met. Accordingly, the prior art is in need of improvement and development.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides a high-temperature heat exchanger capable of generating steam so as to realize boiling heat transfer and direct recycling of water subjected to steam-liquid separation.

In order to achieve the purpose, the technical solution of the invention is as follows:

a high temperature heat exchanger capable of generating steam, comprising:

the device comprises a shell, a gas distribution cavity and a liquid collection cavity, wherein one end of the shell is provided with the gas distribution cavity and the liquid collection cavity, and the gas distribution cavity is provided with a high-temperature working medium inlet pipe;

the overheating pipe set is arranged inside the shell, and the inlet end of the overheating pipe set is connected with the gas distribution cavity;

the main heat exchange tube group is arranged in the shell, the inlet end of the main heat exchange tube group is connected with the outlet end of the superheating tube group, the outlet end of the main heat exchange tube group is connected with the liquid collecting cavity, the superheating tube group is positioned above the inner cavity of the shell, and the main heat exchange tube group is positioned below the superheating tube group; and the number of the first and second groups,

the steam bag is communicated and mounted on the upper portion of the shell, a water inlet pipe corresponding to the steam bag is further arranged on the lower portion of the shell, a steam-water separation partition plate is arranged in the steam bag, the steam bag is provided with a steam outlet, a steam-water separator is connected to an outlet in the top of the steam bag, an automatic drain valve is connected to the lower portion of the steam-water separator, an outlet end of the automatic drain valve is connected with a drain water return pipe, and an outlet of the drain water return pipe is connected to the middle lower portion of the shell; wherein the content of the first and second substances,

the heat exchanger includes:

a first circulation loop of the phase change working medium: the phase change working medium sequentially enters the gas distribution cavity, the overheating pipe set, the main heat exchange pipe set and the liquid collection cavity from the top;

second circulation loop of cooling water: a water inlet pipe, a shell inner cavity, the upper part of the shell inner cavity, a steam pocket, a steam-water separator, an automatic drain valve or a steam outlet.

The high-temperature heat exchanger capable of generating steam is characterized in that the cross section of the steam-water separation partition plate is in an inverted V shape, and the steam-water separation partition plate divides the steam packet into an upper cavity and a lower cavity.

The high-temperature heat exchanger capable of generating steam is characterized in that a pipe group fixing bracket is arranged on the middle, lower and inner outer sides of the shell.

The high-temperature heat exchanger capable of generating steam further comprises a liquid level controller, and the upper part and the lower part of the shell are respectively connected with the upper interface and the lower interface of the liquid level controller.

The high-temperature heat exchanger capable of generating steam is characterized in that a liquid pipe outlet is formed in the bottom of the liquid collecting cavity.

The high-temperature heat exchanger capable of generating steam is characterized in that a high-temperature working medium inlet pipe is arranged at the top of the gas distribution cavity.

Compared with the prior art, the invention has the beneficial effects that: 1. the compact arrangement and the proper pipe diameter selection of the main heat exchange pipe group are utilized, and the heat exchanger has the advantages of high heat exchange efficiency, small thermal resistance, compact structure, small volume, easy disassembly, washing, maintenance and the like;

2. the steam drum and the built-in steam-water separation and automatic drainage recycling are arranged, and the overheating pipe set is arranged at the top of the shell, so that the defects of the existing heat exchanger are overcome, the steam generated at the low-temperature water side can be quickly separated and led out, the bubble condensation is avoided, the influence of the saccular bubbles on heat transfer is reduced, and simultaneously, the boiling heat transfer and the steam-liquid separation are efficiently realized, so that the required saturated steam can be generated; the condensate generated by the condensation phase change of the high-temperature side high-heating working medium greatly reduces the on-way resistance, increases the circulation volume of the heating working medium, and is quickly and timely discharged, thereby greatly improving the heat exchange efficiency of the heating working medium.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a front view of a high temperature heat exchanger capable of generating steam in accordance with an embodiment of the present invention;

description of reference numerals: 11. a housing; 12. a superheating pipe set; 13. a steam pocket; 14. a steam-water separation baffle; 15. a steam-water separator; 16. a steam outlet; 17. an automatic drain valve; 18. a high-temperature working medium air inlet pipe; 19. a gas distribution cavity; 20. a liquid collection cavity; 21. a drainage water return pipe; 22. a liquid level controller; 23. a water inlet pipe; 24. a tube set fixing bracket; 25. a main heat exchange tube set; 26. and a liquid pipe outlet.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Example (b):

it should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

It will be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated in the drawings for convenience and simplicity of description only and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention.

In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. Furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1, fig. 1 is a front view of a high temperature heat exchanger capable of generating steam according to an embodiment of the present invention.

The invention provides a high-temperature heat exchanger capable of generating steam, which can realize boiling heat transfer and direct recycling of water subjected to steam-liquid separation.

A high temperature heat exchanger capable of generating steam, comprising: the device comprises a shell 11, a superheater tube group 12, a main heat exchange tube group 25 and a steam packet 13, wherein one end of the shell 11 is provided with a gas distribution cavity 19 and a liquid collection cavity 20, and the gas distribution cavity 19 is provided with a high-temperature working medium inlet pipe 18; the overheating pipe set 12 is arranged inside the shell 11, and the inlet end of the overheating pipe set 12 is connected with the gas distribution cavity 19; the main heat exchange tube group 25 is arranged inside the shell 11, the inlet end of the main heat exchange tube group 25 is connected with the outlet end of the superheating tube group 12, the outlet end of the main heat exchange tube group 25 is connected with the liquid collecting cavity 20, the superheating tube group 12 is positioned above the inner cavity of the shell 11, and the main heat exchange tube group 25 is positioned below the superheating tube group 12; and the steam pocket 13 is communicated with and installed on the upper part of the shell 11, the lower part of the shell 11 is also provided with a water inlet pipe 23 corresponding to the steam pocket 13, a steam-water separation partition plate 14 is arranged in the steam pocket 13, the steam pocket 13 is provided with a steam outlet 16, an outlet at the top of the steam pocket 13 is connected with a steam-water separator 15, the lower part of the steam-water separator 15 is connected with an automatic steam trap 17, the outlet end of the automatic steam trap 17 is connected with a drain water return pipe 21, and the outlet of the drain water return pipe 21 is connected to the middle lower part of the shell 11. The heat exchanger includes: a first circulation loop of the phase change working medium: the phase change working medium sequentially enters the gas distribution cavity 19, the superheater tube group 12, the main heat exchange tube group 25 and the liquid collection cavity 20 from the top; second circulation loop of cooling water: a water inlet pipe 23, an inner cavity of the shell 11, the upper part of the inner cavity of the shell 11, a steam pocket 13, a steam-water separator 15, an automatic drain valve 17 or a steam outlet 16. Namely: the high-temperature side is high-temperature heating phase-change working medium, and the flowing high-temperature gaseous working medium sequentially enters the air inlet pipe → the air distribution cavity 19 → the superheated pipe group 12 and the main heat exchange pipe group 25 → the liquid collection cavity 20 → the liquid pipe outlet 26 from the top; the low temperature side is formed by the low temperature water inlet pipe 23 → the inner cavity of the shell 11 → the upper part of the inner cavity of the shell 11 → the steam pocket 13 → the steam-water separator 15 → the automatic steam trap 17 or the steam outlet 16.

The invention utilizes the close arrangement and the proper pipe diameter selection of the main heat exchange pipe set 25, and has the advantages of high heat exchange efficiency, small thermal resistance, compact structure, small volume, easy disassembly, cleaning and maintenance, and the like. According to the invention, the steam drum 13 and the built-in steam-water separation and automatic drainage recycling are arranged, and the superheating pipe set 12 is arranged at the top of the shell 11, so that the defects of the existing heat exchanger are overcome, the steam generated at the low-temperature water side can be rapidly separated and led out, the bubble condensation is avoided, the influence of the saccular bubbles on heat transfer is reduced, and meanwhile, the boiling heat transfer and the steam-liquid separation are efficiently realized, so that the required saturated steam can be generated; the condensate generated by the condensation phase change of the high-temperature side high-heating working medium greatly reduces the on-way resistance, increases the circulation volume of the heating working medium, and is quickly and timely discharged, thereby greatly improving the heat exchange efficiency of the heating working medium.

As an alternative embodiment, in some embodiments, the cross section of the steam-water separating partition 14 has an inverted V shape, and the steam-water separating partition 14 divides the steam pocket 13 into an upper cavity and a lower cavity.

As an alternative embodiment, in some embodiments, the tube set fixing bracket 24 is disposed on the middle, lower, inner outer side of the housing 11.

As an optional implementation manner, in some embodiments, the device further includes a liquid level controller 22, and the upper portion and the lower portion of the housing 11 are respectively connected to upper and lower interfaces of the liquid level controller 22.

As an alternative embodiment, in some embodiments, the bottom of the liquid collection chamber 20 is provided with a liquid pipe outlet 26.

As an alternative embodiment, in some embodiments, the top of the gas distribution chamber 19 is provided with a high-temperature working medium inlet pipe 18.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention accordingly, and not to limit the protection scope of the present invention accordingly. All equivalent changes or modifications made in accordance with the spirit of the present disclosure are intended to be covered by the scope of the present disclosure.