Series disc ring type heat exchanger

Abstract

The utility model provides a series disc ring type heat exchanger which comprises a first tube box, a second tube box, a third tube box, a fourth tube box and a fifth tube box, and the first tube box, the second tube box, the third tube box, the fourth tube box and the fifth tube box are sequentially arranged on the first tube box and are communicated. A plurality of longitudinally-distributed heat exchange tubes are arranged in the second tube box and the fourth tube box, a shell pass gas inlet and a shell pass gas outlet are formed in the two sides of the second tube box and the two sides of the fourth tube box respectively, a tube pass gas inlet tube is arranged on one side of the first tube box, and a tube pass gas outlet tube is arranged on one side of the fifth tube box. The two independent disc ring type heat exchangers are connected in series to form one heat exchanger by sharing the tube box, so that the equipment manufacturing cost is reduced, the field utilization rate is improved, the retention time of fluid in a pipeline is shortened, the pressure loss is reduced, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchangers, and in particular relates to a series-connected disc-ring heat exchanger. Background Art

[0002] Heat exchanger is one of the important equipment in smelting flue gas acid production and sulfuric acid production system in chemical industry. It is mainly used for heat exchange between cold and hot fluids or hot and hot fluids to ensure that the fluid reaches the design temperature before entering the conversion. Compared with the circular segment type, hollow ring shell and tube type and other heat exchangers, the disc ring type heat exchanger is widely used in smelting flue gas acid production and sulfuric acid production system in chemical industry due to its high heat exchange efficiency and low equipment pressure loss.

[0003] In the existing smelting flue gas acid production and sulfuric acid production systems in the chemical industry, the process configuration generally uses multiple independent heat exchangers. Due to limited space, there are many problems with the pipeline configuration, which leads to increased pressure loss of the equipment. The shell-side inlet and outlet of the heat exchanger are mostly circular hole structures, which easily lead to uneven distribution of fluid in the pipe box, thereby affecting the heat exchange efficiency of the heat exchanger. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a series-connected disc-ring heat exchanger, which is used to solve the technical problems raised by the above background technology.

[0005] The utility model provides the following technical solution: a series disc-ring heat exchanger, comprising a first pipe box and a second pipe box, a third pipe box, a fourth pipe box and a fifth pipe box which are sequentially arranged on the first pipe box, the first pipe box, the second pipe box, the third pipe box, the fourth pipe box and the fifth pipe box are connected to each other, a plurality of longitudinally distributed heat exchange pipes are arranged inside the second pipe box and the fourth pipe box, shell-side air inlets and shell-side air outlets are respectively arranged on both sides of the second pipe box and the fourth pipe box, a tube-side gas inlet pipe is arranged on one side of the first pipe box, and a tube-side gas outlet pipe is arranged on one side of the fifth pipe box.

[0006] Compared with the prior art, the beneficial effects of the present application are as follows: in the present application, the first pipe box, the second pipe box, and the third pipe box constitute a lower disc ring heat exchanger, and the third pipe box, the fourth pipe box, and the fifth pipe box constitute an upper disc ring heat exchanger. The third pipe box serves as a common pipe box for the upper / lower disc ring heat exchangers, that is, two independent disc ring heat exchangers are connected in series into one by means of a common pipe box, thereby reducing equipment manufacturing costs and improving site utilization. At the same time, the upper / lower disc ring heat exchangers share a pipe box, so that the tube-side fluid of the lower disc ring heat exchanger can directly enter the pipe box of the upper disc ring heat exchanger, thereby reducing the residence time of the fluid in the pipeline, reducing pressure loss, and improving heat exchange efficiency.

[0007] Preferably, baffles are provided inside the second pipe box and the fourth pipe box.

[0008] Preferably, an upper tube sheet and a lower tube sheet are provided inside the second tube box and the fourth tube box, and the upper tube sheet and the lower tube sheet are respectively arranged above and below the heat exchange tubes.

[0009] Preferably, a support plate is provided between the heat exchange tubes.

[0010] Preferably, the shell-side air inlet and the shell-side air outlet have the same structure, and both the shell-side air inlet and the shell-side air outlet include a round hole pipe, a convenient circle and an oblong hole pipe, the round hole pipe is connected to the oblong hole pipe through the convenient circle, and the oblong hole pipe is connected to the second pipe box and the fourth pipe box.

[0011] Preferably, a gas distribution plate is provided at the connection positions of the second pipe box and the fourth pipe box with the shell-side gas inlet and the shell-side gas outlet respectively, and the gas distribution plate is provided with a plurality of evenly distributed through holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0013] Figure 1 A structural diagram of a series disc-ring heat exchanger provided in an embodiment of the utility model;

[0014] Figure 2 This is a structural diagram of the shell-side air inlet and shell-side air outlet provided in an embodiment of the utility model.

[0015] Description of reference numerals:

[0016] First pipe box 1 Second pipe box 2 The third pipe box 3 Fourth pipe box 4 Fifth pipe box 5 Heat exchange tube 6 Baffles 7 Support plate 8 Lower tube plate 9 Upper tube plate 10 Tube gas inlet pipe 11 Tube gas outlet pipe 12 Shell side air inlet 13 Shell side outlet 14 Long round hole pipe 15 Convenient Circle 16 Round hole pipe 17 Gas distribution plate 18

[0017] The embodiments of the utility model will be further described below in conjunction with the accompanying drawings. DETAILED DESCRIPTION

[0018] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0019] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0020] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present utility model, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0021] In the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present invention can be understood according to specific circumstances.

[0022] In the embodiment of the present utility model, Figure 1 As shown, a series disc-ring heat exchanger comprises a first pipe box 1 and a second pipe box 2, a third pipe box 3, a fourth pipe box 4 and a fifth pipe box 5 which are sequentially arranged on the first pipe box 1, the first pipe box 1, the second pipe box 2, the third pipe box 3, the fourth pipe box 4 and the fifth pipe box 5 are connected and arranged, a plurality of longitudinally distributed heat exchange pipes 6 are arranged inside the second pipe box 2 and the fourth pipe box 4, a shell-side air inlet 13 and a shell-side air outlet 14 are respectively arranged on both sides of the second pipe box 2 and the fourth pipe box 4, a tube-side gas inlet pipe 11 is arranged on one side of the first pipe box 1, and a tube-side gas outlet pipe 12 is arranged on one side of the fifth pipe box 5;

[0023] Specifically, the second pipe box 2 is consistent with the fourth pipe box 4 in structure, and the first pipe box 1, the second pipe box 2, the third pipe box 3, the fourth pipe box 4 and the fifth pipe box 5 are arranged in sequence from bottom to top, wherein the first pipe box 1, the second pipe box 2, the third pipe box 3 constitute a lower disc ring heat exchanger, the third pipe box 3, the fourth pipe box 4, and the fifth pipe box 5 constitute an upper disc ring heat exchanger, and the third pipe box 3 is a common pipe box between the lower disc ring heat exchanger and the upper disc ring heat exchanger, wherein, in the lower disc ring heat exchanger, the first pipe box 1 is the lower pipe box, the second pipe box 2 is the third pipe box 3, the fourth pipe box 4, and the fifth pipe box 5 constitute an upper disc ring heat exchanger, and the third pipe box 3 is a common pipe box between the lower disc ring heat exchanger and the upper disc ring heat exchanger. Box 2 is a middle tube box, and the third tube box 3 is an upper tube box. In the upper disc ring heat exchanger, the third tube box 3 is a lower tube box, the fourth tube box 4 is a middle tube box, and the fifth tube box 5 is an upper tube box. Therefore, in the present invention, two independent disc ring heat exchangers are connected in series into one, which reduces the equipment manufacturing cost and improves the site utilization rate. At the same time, the upper disc ring heat exchanger and the lower disc ring heat exchanger share the third tube box 3, so that the tube-side fluid of the lower disc ring heat exchanger can directly enter the tube box of the upper disc ring heat exchanger, which reduces the residence time of the fluid in the pipeline, reduces the pressure loss, and improves the heat exchange efficiency;

[0024] At the same time, in actual use, the fluid enters the lower disc ring heat exchanger from the tube-side gas inlet pipe 11, and then passes through the upper disc ring heat exchanger and is finally output from the tube-side gas outlet pipe 12. In this process, the gas enters the second pipe box 2 and the fourth pipe box 4 from the shell-side air inlet 13, and is finally output from the shell-side air outlet 14 to realize the heat exchange process.

[0025] In this embodiment, baffles 7 are provided inside the second pipe box 2 and the fourth pipe box 4;

[0026] Specifically, the baffles 7 are used to limit the position of the heat exchange tubes 6, change the flow direction of the shell-side gas and extend the flow time of the shell-side gas, thereby improving the heat exchange efficiency. At the same time, the number of baffles 7 changes with the length of the heat exchange tubes 6.

[0027] In this embodiment, an upper tube sheet 10 and a lower tube sheet 9 are provided inside the second tube box 2 and the fourth tube box 4. The upper tube sheet 10 and the lower tube sheet 9 are respectively provided above and below the heat exchange tube 6.

[0028] Specifically, the upper tube plate 10 and the lower tube plate 9 are respectively arranged above and below the heat exchange tube 6 to fix the heat exchange tube 6 and limit the upper and lower positions of the heat exchange tube 6 .

[0029] In this embodiment, a support plate 8 is provided between the heat exchange tubes 6;

[0030] Specifically, the support plate 8 is used to limit the positions between the heat exchange tubes 6 to prevent the heat exchange tubes 6 from becoming loose.

[0031] Meanwhile, it should be noted that the upper disc-ring heat exchanger and the lower disc-ring heat exchanger are configured in the same manner as the independent disc-ring heat exchangers in the prior art, and will not be described in detail herein.

[0032] like Figure 2 As shown, in this embodiment, the shell-side air inlet 13 and the shell-side air outlet 14 have the same structure, and both the shell-side air inlet 13 and the shell-side air outlet 14 include a round hole pipe 17, a convenient circle 16 and an oblong hole pipe 15, and the round hole pipe 17 is connected to the oblong hole pipe 15 through the convenient circle 16, and the oblong hole pipe 15 is connected to the second pipe box 2 and the fourth pipe box 4;

[0033] Specifically, when the gas passes through the round hole pipe 17, the convenient circle 16 and the oblong hole pipe 15, the fluid flow cross-section increases, which effectively reduces the fluid flow rate, can slow down the impact of the fluid on the heat exchange tube, and achieves the purpose of reducing the pressure loss of the equipment.

[0034] In this embodiment, a gas distribution plate 18 is provided at the connection positions of the second pipe box 2 and the fourth pipe box 4 with the shell-side gas inlet 13 and the shell-side gas outlet 14, respectively, and the gas distribution plate 18 is provided with a plurality of evenly distributed through holes;

[0035] Specifically, a gas distribution plate is provided at the connection position between the second pipe box 2 and the shell-side air inlet 13 and the shell-side air outlet 14, and a gas distribution plate 18 is also provided at the connection position between the fourth pipe box 4 and the shell-side air inlet 13 and the shell-side air outlet 14. The porous structure of the gas distribution plate 18 can ensure that the gas is more evenly distributed in the pipe box of the heat exchanger, thereby improving the heat exchange efficiency.

[0036] In summary, in the above-mentioned embodiment of the utility model, the series-connected disc-ring heat exchanger, in this application, the first pipe box 1, the second pipe box 2, and the third pipe box 3 constitute the lower disc-ring heat exchanger, and the third pipe box 3, the fourth pipe box 4, and the fifth pipe box 5 constitute the upper disc-ring heat exchanger. The third pipe box 3 is used as a common pipe box for the upper / lower disc-ring heat exchangers, that is, two independent disc-ring heat exchangers are connected in series into one by a common pipe box, which reduces the equipment manufacturing cost and improves the site utilization rate. At the same time, the upper / lower disc The annular heat exchangers share a pipe box, so that the tube-side fluid of the lower disc-annular heat exchanger can directly enter the pipe box of the upper disc-annular heat exchanger, reducing the residence time of the fluid in the pipeline, reducing pressure loss, and improving heat exchange efficiency. At the same time, the shell-side air inlet 13 and the shell-side air outlet 14 adopt an oblong hole convenient circular structure. When the gas enters the pipe box through the shell-side air inlet 13, the flow rate is reduced, which slows down the impact of the fluid on the heat exchange tube, reduces pressure loss, and makes the fluid more evenly distributed in the pipe box, thereby improving heat exchange efficiency.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A series disc-ring heat exchanger, characterized in that: The invention comprises a first pipe box and a second pipe box, a third pipe box, a fourth pipe box and a fifth pipe box which are arranged on the first pipe box in sequence. The first pipe box, the second pipe box, the third pipe box, the fourth pipe box and the fifth pipe box are connected to each other. A plurality of longitudinally distributed heat exchange pipes are arranged inside the second pipe box and the fourth pipe box. Shell-side air inlets and shell-side air outlets are respectively arranged on both sides of the second pipe box and the fourth pipe box. A tube-side gas inlet pipe is arranged on one side of the first pipe box, and a tube-side gas outlet pipe is arranged on one side of the fifth pipe box.

2. The series disk-ring heat exchanger according to claim 1, characterized in that: Baffles are provided inside the second pipe box and the fourth pipe box.

3. The series disk-ring heat exchanger according to claim 1, characterized in that: An upper tube sheet and a lower tube sheet are provided inside the second tube box and the fourth tube box, and the upper tube sheet and the lower tube sheet are respectively arranged above and below the heat exchange tubes.

4. The series disk-ring heat exchanger according to any one of claims 1 to 3, characterized in that: Support plates are arranged between the heat exchange tubes.

5. The series disk-ring heat exchanger according to claim 1, characterized in that: The shell-side air inlet and the shell-side air outlet have the same structure, and both the shell-side air inlet and the shell-side air outlet include a round hole pipe, a convenient circle and an oblong hole pipe. The round hole pipe is connected to the oblong hole pipe through the convenient circle, and the oblong hole pipe is connected to the second pipe box and the fourth pipe box.

6. The series disk-ring heat exchanger according to claim 1, characterized in that: Gas distribution plates are provided at the connection positions of the second pipe box and the fourth pipe box with the shell-side gas inlet and the shell-side gas outlet respectively, and the gas distribution plates are provided with a plurality of evenly distributed through holes.

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