阅读说明：本技术 一种管壳式喷雾冷却换热器 (Pipe shell type spray cooling heat exchanger ) 是由 周年勇 冯浩 郭艺星 刘文博 范婕 彭浩平 邓嵩 雷云 于 2021-05-21 设计创作，主要内容包括：本发明涉及换热器技术领域,尤其是涉及一种管壳式喷雾冷却换热器,包括第一进液管、第一出液管、分液总管和集液总管,所述第一进液管的输出口和分液总管的输入口相连通,所述第一出液管的输入口和集液总管的输出口相连通；所述分液总管上连通有若干分液支管,所述集液总管上连通有若干集液支管,所述分液支管插设在对应的集液支管内,所述分液支管的外周面上设置有喷雾机构,所述集液支管外侧均套设有壳程环管,相邻两个壳程环管之间通过连接管相连通,将管壳式换热器与喷雾冷却技术相结合,提高综合传热系数,采用喷雾冷却技术可以提高换热效率,且换热模块可串联多个,组合装配以适配不同的换热量需求。(The invention relates to the technical field of heat exchangers, in particular to a shell-and-tube spray cooling heat exchanger which comprises a first liquid inlet pipe, a first liquid outlet pipe, a liquid distribution main pipe and a liquid collection main pipe, wherein an output port of the first liquid inlet pipe is communicated with an input port of the liquid distribution main pipe, and an input port of the first liquid outlet pipe is communicated with an output port of the liquid collection main pipe; the device comprises a liquid distribution main pipe, a liquid collection main pipe and a shell side ring pipe, wherein the liquid distribution main pipe is communicated with a plurality of liquid distribution branch pipes, the liquid distribution branch pipes are inserted into the corresponding liquid collection branch pipes, a spraying mechanism is arranged on the outer peripheral surface of each liquid distribution branch pipe, the shell side ring pipes are sleeved on the outer sides of the liquid collection branch pipes, two adjacent shell side ring pipes are communicated through connecting pipes, a shell-and-tube heat exchanger is combined with a spraying cooling technology, the comprehensive heat transfer coefficient is improved, the heat exchange efficiency can be improved by adopting the spraying cooling technology, a plurality of heat exchange modules can be connected in series, and the heat exchange quantity requirements with different adaptations are combined.)

1. A shell-and-tube spray cooling heat exchanger is characterized by comprising a first liquid inlet pipe (1), a first liquid outlet pipe (2), a liquid distribution main pipe (3) and a liquid collection main pipe (4), wherein an output port of the first liquid inlet pipe (1) is communicated with an input port of the liquid distribution main pipe (3), and an input port of the first liquid outlet pipe (2) is communicated with an output port of the liquid collection main pipe (4);

the liquid distribution main pipe (3) is communicated with a plurality of liquid distribution branch pipes (31), the liquid collection main pipe (4) is communicated with a plurality of liquid collection branch pipes (41), the liquid distribution branch pipes (31) and the liquid collection branch pipes (41) are arranged in a one-to-one correspondence manner, the liquid distribution branch pipes (31) are inserted into the corresponding liquid collection branch pipes (41), a first heat exchange cavity (5) is formed between the liquid distribution branch pipes (31) and the liquid collection branch pipes (41), the outer peripheral surface of each liquid distribution branch pipe (31) is provided with a spraying mechanism (8), the outer sides of the liquid collection branch pipes (41) are respectively sleeved with a shell side ring pipe (6), a second heat exchange cavity (7) is formed between the shell side ring pipe (6) and the liquid collection branch pipes (41), two adjacent shell side ring pipes (6) are communicated with each other through a connecting pipe (9), and the shell side ring pipe (6) on the rightmost side is provided with a second liquid inlet pipe (10) communicated with the second heat exchange cavity, and a second liquid outlet pipe (11) communicated with the second heat exchange cavity is arranged on the last shell pass ring pipe (6).

2. A shell and tube spray cooled heat exchanger as claimed in claim 1, wherein: the inner circumferential surface of the liquid collecting branch pipe (41) is a heat exchange wall surface (411), a plurality of fins (412) are arranged on the heat exchange wall surface (411) at intervals, and a water drainage groove (413) extending along the axial direction of the liquid collecting branch pipe (41) is formed between every two adjacent fins (412).

3. A shell and tube spray cooled heat exchanger as claimed in claim 2, wherein: the fins (412) are serrated.

4. A shell and tube spray cooled heat exchanger as claimed in claim 1, wherein: the spraying mechanism (8) is a spraying hole or a nozzle with the spraying direction facing the inner circumferential surface of the liquid collecting branch pipe (41).

Technical Field

The invention relates to the technical field of heat exchangers, in particular to a shell-and-tube spray cooling heat exchanger.

Background

The shell-and-tube heat exchanger consists of a shell, a heat transfer tube bundle, a tube plate, a baffle plate, a tube box and other parts. The shell is cylindrical, a tube bundle is arranged in the shell, two ends of the tube bundle are fixed on the tube plate, and two kinds of cold and hot fluids for heat exchange flow in the tube and are called tube pass fluids; the other flows outside the tubes and is called shell-side fluid.

In general energy industry, the traditional shell-and-tube heat exchanger adopts a dividing wall type design, cold and hot fluid exchanges heat through a wall surface, and the convective heat transfer coefficients at two sides of the wall surface are smaller (usually 100-²) The heat exchanger has the advantages of large heat exchange area, low heat exchange efficiency, large volume, large metal material consumption and high manufacturing cost.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the problems of large volume, low heat exchange efficiency and high cost of a heat exchanger in the prior art, a shell-and-tube spray cooling heat exchanger is provided.

The technical scheme adopted by the invention for solving the technical problems is as follows: a shell-and-tube spray cooling heat exchanger comprises a first liquid inlet pipe, a first liquid outlet pipe, a liquid distribution main pipe and a liquid collection main pipe, wherein an output port of the first liquid inlet pipe is communicated with an input port of the liquid distribution main pipe, and an input port of the first liquid outlet pipe is communicated with an output port of the liquid collection main pipe;

the liquid distribution main pipe is communicated with a plurality of liquid distribution branch pipes, the liquid collection main pipe is communicated with a plurality of liquid collection branch pipes, the liquid distribution branch pipes and the liquid collection branch pipes are arranged in a one-to-one correspondence manner, the liquid distribution branch pipes are inserted into the corresponding liquid collection branch pipes, a first heat exchange cavity is formed between the liquid distribution branch pipes and the liquid collection branch pipes, the outer peripheral surfaces of the liquid distribution branch pipes are provided with spraying mechanisms, the outer sides of the liquid collection branch pipes are sleeved with shell side ring pipes, a second heat exchange cavity is formed between the shell side ring pipes and the liquid collection branch pipes, two adjacent shell side ring pipes are communicated through a connecting pipe, a second liquid inlet pipe communicated with the second heat exchange cavity is arranged on the shell side ring pipe on the rightmost side, a second liquid outlet pipe communicated with the second heat exchange cavity is arranged on the last shell side ring pipe, a shell-and tube type heat exchanger is combined with a spraying cooling technology, the comprehensive heat transfer coefficient is improved, and the spraying cooling technology can improve the heat exchange efficiency, a plurality of heat exchange modules can be connected in series and assembled to adapt to different heat exchange quantity requirements; the shell-and-tube spray cooling heat exchanger has small volume, can save metal materials, reduce the occupied space of the heat exchanger volume and reduce the manufacturing cost; the heat exchange modules can be produced in batch, and can be produced in an assembly mode according to the required heat exchange quantity, so that the production link cost is simplified.

In order to further improve the heat exchange efficiency, the heat exchanger further comprises a heat exchange wall surface which is the inner peripheral surface of the liquid collecting branch pipe, a plurality of fins are arranged on the heat exchange wall surface at intervals, a water drainage groove extending along the axial direction of the liquid collecting branch pipe is formed between every two adjacent fins, and the water drainage groove conducts flow to enable a liquid film to be thinned so as to reduce heat exchange resistance.

In order to further improve the crushing effect of the sprayed mist water drops, the fins are further saw-toothed.

In order to convey the first fluid to the spray cavity in a mist form, the spray mechanism is a spray hole or a spray nozzle with the spraying direction facing the inner peripheral surface of the liquid collecting branch pipe, two spray forming structures of a spray hole and the spray nozzle are provided, the production is flexible, the spray hole is convenient to process during production, and the spray forming effect of the spray nozzle is good.

The invention has the beneficial effects that: according to the invention, the shell-and-tube heat exchanger is combined with the spray cooling technology, so that the comprehensive heat transfer coefficient is improved, the spray cooling technology can be adopted to improve the heat exchange efficiency, a plurality of heat exchange modules can be connected in series, and the combination assembly is matched with different heat exchange quantity requirements; the shell-and-tube spray cooling heat exchanger has small volume, can save metal materials, reduce the occupied space of the heat exchanger volume and reduce the manufacturing cost; the heat exchange modules can be produced in batch, and can be produced in an assembly mode according to the required heat exchange quantity, so that the production link cost is simplified.

Drawings

The invention is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic front view of the preferred embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the preferred embodiment of the present invention;

FIG. 3 is a schematic cross-sectional view of the heat exchange zone of the present invention.

In the figure: 1. first feed liquor pipe, 2, first drain pipe, 3, divide liquid house steward, 31, divide liquid branch pipe, 4, collect liquid house steward, 41, collect liquid branch pipe, 411, heat transfer wall, 412, fin, 413, sluicing ditch groove, 5, first heat transfer chamber, 6, shell side ring pipe, 7, second heat transfer chamber, 8, spraying mechanism, 9, connecting pipe, 10, second feed liquor pipe, 11, second drain pipe.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

As shown in fig. 1, which is a schematic structural diagram of the present invention, a tube-shell spray cooling heat exchanger includes a first liquid inlet tube 1, a first liquid outlet tube 2, a liquid distribution manifold 3, and a liquid collection manifold 4, wherein an output port of the first liquid inlet tube 1 is communicated with an input port of the liquid distribution manifold 3, and an input port of the first liquid outlet tube 2 is communicated with an output port of the liquid collection manifold 4;

as shown in fig. 2, the liquid distribution header pipe 3 is communicated with a plurality of liquid distribution branch pipes 31, the liquid collection header pipe 4 is communicated with a plurality of liquid collection branch pipes 41, the liquid distribution branch pipes 31 and the liquid collection branch pipes 41 are arranged in a one-to-one correspondence manner, the liquid distribution branch pipes 31 are inserted into the corresponding liquid collection branch pipes 41, a first heat exchange cavity 5 is formed between the liquid distribution branch pipes 31 and the liquid collection branch pipes 41, the outer peripheral surface of the liquid distribution branch pipes 31 is provided with a spraying mechanism 8, the outer sides of the liquid collection branch pipes 41 are respectively sleeved with a shell side ring pipe 6, a second heat exchange cavity 7 is formed between the shell side ring pipe 6 and the liquid collection branch pipes 41, two adjacent shell side ring pipes 6 are communicated through a connecting pipe 9, the shell side ring pipe 6 on the rightmost side is provided with a second liquid inlet pipe 10 communicated with the second heat exchange cavity, the shell side ring pipe 6 on the last side is provided with a second liquid outlet pipe 11 communicated with the second heat exchange cavity, one end of the shell side ring pipe 6 is sealed to the liquid separating branch pipe 31, and the other end of the shell side ring pipe 6 is sealed to the liquid collecting branch pipe 41, so that the shell-and-tube heat exchanger is combined with the spray cooling technology, the comprehensive heat transfer coefficient is improved, the spray cooling technology can be adopted to improve the heat exchange efficiency, a plurality of heat exchange modules can be connected in series, and the heat exchange modules are assembled to adapt to different heat exchange quantity requirements; the shell-and-tube spray cooling heat exchanger has small volume, can save metal materials, reduce the occupied space of the heat exchanger volume and reduce the manufacturing cost; the heat exchange modules can be produced in batch, and can be produced in an assembly mode according to the required heat exchange quantity, so that the production link cost is simplified.

As shown in fig. 3, the inner peripheral surface of the liquid collecting branch pipe 41 is a heat exchange wall surface 411, a plurality of fins 412 are arranged on the heat exchange wall surface 411 at intervals, a drainage groove 413 extending along the axial direction of the liquid collecting branch pipe 41 is formed between two adjacent fins 412, the fins 412 are in a zigzag shape, and the drainage groove 413 guides the flow to thin the liquid film so as to reduce the heat exchange resistance.

The spraying mechanism 8 is a spraying hole or a nozzle with the spraying direction facing the inner peripheral surface of the liquid collecting branch pipe 41, two spraying forming structures of a spraying hole and the nozzle are provided, the production is flexible, the spraying hole is convenient to process during production, and the spraying effect formed by the nozzle is good.

When the shell side ring pipe 6 is one, the second liquid inlet pipe 10 and the second liquid outlet pipe 11 are respectively positioned at two ends and are spaced by 180 degrees; when the number of the shell-side ring pipes 6 is two or more, the second liquid inlet pipe 10 and the connecting pipe 9 are respectively located at two ends and spaced at 180 degrees, the two adjacent connecting pipes 9 are respectively located at two ends and spaced at 180 degrees, and the connecting pipe 9 and the second liquid outlet pipe 11 are respectively located at two ends and spaced at 180 degrees, so that the flow of the second fluid flowing through the second heat exchange cavity 7 is maximized, and the heat exchange efficiency is improved.

As shown in the combination of FIGS. 1 and 2, the hollow arrows indicate the flow direction of the first fluid, and the solid arrows indicate the flow of the second fluidThe direction is shown schematically, the first fluid sequentially passes through the first liquid inlet pipe 1, the liquid distribution header pipe 3 and the liquid distribution branch pipe 31, the first fluid in the liquid distribution branch pipe 31 is subjected to pressure and is changed into foggy small liquid drops moving at high speed through the spraying mechanism 8 to be sprayed into the annular first heat exchange cavity 5 and to impact the enhanced heat exchange wall surface 411, and the liquid film of the foggy liquid drops existing in the fins 412 is continuously broken and thinned to reduce heat exchange resistance, so that the convection heat exchange coefficient on the surface of the heat exchange wall surface 53 is as high as ten thousand W/m²The liquid drops contacting the heat exchange wall surface 411 flow into the header pipe 4 from the header branch pipe 41 along the axial water drainage grooves 413 among the fins 412 and finally flow out from the first liquid outlet pipe 2;

the second fluid flows into the second heat exchange cavity 7 from the second liquid inlet pipe 10, enters the next second heat exchange cavity 7 through the connecting pipe 8, and so on until the second fluid flows out from the second liquid outlet pipe 11;

in the flowing process, two kinds of cold and hot fluids, i.e., the first fluid and the second fluid, exchange heat through the enhanced heat exchange wall 411, the hot fluid is cooled, and the cold fluid is heated.

The shell-and-tube heat exchanger main body is formed by connecting different numbers of heat exchange modules in parallel through tube passes and in series through shell passes according to different heat exchange amounts.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.