Heat exchange reinforcing tube and double-tube heat exchanger

Abstract

The utility model provides a heat exchange reinforcement tube and a double-tube heat exchanger, which are applied to the field of heat exchangers, and the key points of the technical scheme are as follows: the heat exchange reinforcement tube comprises a shell, and refrigerant tubes filled with refrigerants are distributed in the shell; the space in the shell is divided into a liquid inlet cavity and a liquid outlet cavity by the partition plate; the liquid inlet pipe b and the liquid outlet pipe b are fixed to the shell, the liquid inlet pipe b is communicated with the liquid inlet cavity, the liquid outlet pipe b is communicated with the liquid outlet cavity, and the size and the distance between the liquid inlet pipe b and the liquid outlet pipe b are the same as those between the liquid inlet pipe a and the liquid outlet pipe a; the first connecting pipe is communicated with the liquid inlet cavity and is used for being connected with a liquid inlet pipe a; the second connecting pipe is communicated with the liquid outlet cavity and is used for being connected with a liquid outlet pipe a; the heat exchanger has the technical effects that an original pipeline interface can be utilized on the basis of improving the heat exchange effect, and pipelines do not need to be rearranged.

Description

Technical Field

[0001] The utility model relates to the field of heat exchangers, in particular to a heat exchange reinforcement tube and a double-tube heat exchanger. Background Art

[0002] A heat exchanger is an energy-saving device that transfers heat between two or more fluids at different temperatures. It transfers heat from a fluid with a higher temperature to a fluid with a lower temperature, so that the fluid temperature reaches the specified index of the process to meet the needs of process conditions. It is also one of the main equipment for improving energy utilization.

[0003] like Figure 1 As shown, a shell and tube heat exchanger structure belonging to the prior art is provided with a liquid inlet pipe a8 and a liquid outlet pipe a9 on the outer shell. For more specific structure and function, refer to the shell and tube heat exchanger disclosed in the Chinese invention patent application with announcement number CN112484535A.

[0004] In actual use, the existing shell and tube heat exchanger may not be able to meet the heat exchange requirements with a single heat exchanger. The commonly used solution is to increase the length of the heat exchanger or connect two heat exchangers in series. However, no matter which method is adopted, the pipeline needs to be rearranged because the position of the interface is changed, which is very inconvenient to operate. Therefore, a device is needed that can improve the heat exchange effect and utilize the original pipeline interface, so that the pipeline does not need to be rearranged and replacement is convenient. Utility Model Content

[0005] On one hand, the utility model provides a heat exchange enhancement tube, which has the advantage of being able to utilize the original pipeline interface on the basis of improving the heat exchange effect without having to rearrange the pipeline.

[0006] Another aspect of the utility model provides a double-tube heat exchanger.

[0007] The first aspect of the utility model provides the following technical solution: a heat exchange reinforcement tube, assembled in a shell and tube heat exchanger, comprising:

[0008] A shell, wherein a refrigerant pipe containing a refrigerant is arranged inside the shell;

[0009] A partition plate, dividing the space inside the shell into a liquid inlet cavity and a liquid outlet cavity;

[0010] A liquid inlet pipe b and a liquid outlet pipe b fixed to the shell, the liquid inlet pipe b is communicated with the liquid inlet cavity, the liquid outlet pipe b is communicated with the liquid outlet cavity, and the size and spacing of the liquid inlet pipe b and the liquid outlet pipe b are the same as the size and spacing of the liquid inlet pipe a and the liquid outlet pipe a;

[0011] a first connecting pipe communicating with the liquid inlet cavity and used to be connected to the liquid inlet pipe a; and

[0012] A second connecting tube communicated with the liquid outlet cavity and used for connecting with the liquid outlet tube a.

[0013] Through the above technical scheme, when the existing shell and tube heat exchanger cannot meet the heat exchange demand, the shell and tube heat exchanger is removed from the pipeline, and then the first connecting pipe is connected to the liquid inlet pipe a, and the second connecting pipe is connected to the liquid outlet pipe a, and then the liquid inlet pipe b is installed at the original installation position of the liquid inlet pipe a, and the liquid outlet pipe b is installed at the original installation position of the liquid outlet pipe a. Before entering the original shell and tube heat exchanger, the liquid first enters the liquid inlet cavity and exchanges heat with the refrigerant pipe installed in the shell. After flowing out of the original shell and tube heat exchanger, it enters the liquid outlet cavity and exchanges heat with the refrigerant pipe again, thereby increasing the contact time between the liquid and the refrigerant pipe and enhancing the heat exchange effect. At the same time, there is no need to change the original pipeline, and the operation is convenient.

[0014] In one embodiment of the utility model, a liquid inlet partition is fixed in the liquid inlet cavity and located between the liquid inlet pipe b and the first connecting pipe, and one end of the liquid inlet partition close to the partition is set as an opening; and a liquid outlet partition is fixed in the liquid outlet cavity and located between the liquid outlet pipe b and the second connecting pipe, and one end of the liquid outlet partition close to the partition is set as an opening.

[0015] Through the above technical solution, the liquid entering the liquid inlet chamber from the liquid inlet pipe b can reach the first connecting pipe only after bypassing the liquid inlet partition. The liquid entering the liquid outlet chamber from the second connecting pipe can reach the liquid outlet pipe b only after bypassing the liquid outlet partition. The liquid inlet partition and the liquid outlet partition increase the path of the liquid through the shell, thereby extending the contact time between the liquid and the refrigerant pipe, further enhancing the heat exchange effect.

[0016] In one embodiment of the utility model, it also includes a refrigerant inlet pipe installed on the shell for supplying refrigerant to enter the refrigerant pipe and a refrigerant outlet pipe for supplying refrigerant to flow out of the refrigerant pipe.

[0017] The second aspect of the utility model provides the following solution: a double-tube heat exchanger, comprising the above-mentioned heat exchange enhancement tube and a shell and tube heat exchanger, wherein the liquid inlet pipe a is connected and fixed to the first connecting pipe, and the liquid outlet pipe a is connected and fixed to the second connecting pipe.

[0018] As described above, the heat exchange enhancement tube and double-tube heat exchanger of the utility model have the following beneficial effects:

[0019] When the existing shell and tube heat exchanger cannot meet the heat exchange demand, the shell and tube heat exchanger is removed from the pipeline, and then the first connecting pipe is connected to the liquid inlet pipe a, and the second connecting pipe is connected to the liquid outlet pipe a, and then the liquid inlet pipe b is installed at the original installation position of the liquid inlet pipe a, and the liquid outlet pipe b is installed at the original installation position of the liquid outlet pipe a. Before entering the original shell and tube heat exchanger, the liquid first enters the liquid inlet cavity and exchanges heat with the refrigerant pipe installed in the shell. After flowing out of the original shell and tube heat exchanger, it enters the liquid outlet cavity and exchanges heat with the refrigerant pipe again, thereby increasing the contact time between the liquid and the refrigerant pipe and enhancing the heat exchange effect. At the same time, there is no need to change the original pipeline, and the operation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of a shell and tube heat exchanger disclosed in the prior art.

[0021] Figure 2 Shown is a schematic structural diagram of a double-tube heat exchanger disclosed in an embodiment of the present utility model.

[0022] Component number description

[0023] 1. Shell; 2. Refrigerant pipe; 3. Partition plate; 4. Liquid inlet cavity; 5. Liquid outlet cavity; 6. Liquid inlet pipe b; 7. Liquid outlet pipe b; 8. Liquid inlet pipe a; 9. Liquid outlet pipe a; 10. First connecting pipe; 11. Second connecting pipe; 12. Liquid inlet partition; 13. Liquid outlet partition; 14. Refrigerant inlet pipe; 15. Refrigerant outlet pipe. DETAILED DESCRIPTION

[0024] The following specific embodiments illustrate the implementation of the present invention, and those familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0025] See also Figure 1 and Figure 2 The utility model provides a double-tube heat exchanger, comprising:

[0026] A shell and tube heat exchanger and a heat exchange enhancement tube. A liquid inlet pipe a8 and a liquid outlet pipe a9 are fixed on the outer shell of the shell and tube heat exchanger. For more specific structure and function, refer to the shell and tube heat exchanger disclosed in the Chinese invention patent application with announcement number CN112484535A; the heat exchange enhancement tube includes: a shell 1, a partition plate 3, a liquid inlet pipe b6, a liquid outlet pipe b7, a first connecting pipe 10 and a second connecting pipe 11.

[0027] See also Figure 2The shell 1 includes a circular tubular body and end covers fixed at both ends of the body by flanges. A refrigerant pipe 2 is arranged in the shell 1. A refrigerant inlet pipe 14 and a refrigerant outlet pipe 15 are welded and fixed on one end cover of the shell 1. The refrigerant inlet pipe 14 and the refrigerant outlet pipe 15 are connected to the refrigerant pipe 2, and refrigerant is supplied to the refrigerant pipe 2 through the refrigerant inlet pipe 14 and the refrigerant outlet pipe 15. The size of the shell 1 is the same as the outer shell size of the shell and tube heat exchanger, ensuring that the heat exchange enhancement tube can be installed in the original installation position of the shell and tube heat exchanger.

[0028] See also Figure 2 The partition plate 3 is sealed and fixed in the middle position of the main body of the shell 1, and separates the two sides of the shell 1 into a liquid inlet chamber 4 and a liquid outlet chamber 5.

[0029] See also Figure 2 The liquid inlet pipe b6 and the liquid outlet pipe b7 are welded and fixed on the main body of the shell 1, the liquid inlet pipe b6 is connected with the liquid inlet chamber 4, and the liquid outlet pipe b7 is connected with the liquid outlet chamber 5. The size and spacing of the liquid inlet pipe b6 and the liquid outlet pipe b7 are the same as the size and spacing of the liquid inlet pipe a8 and the liquid outlet pipe a9, so that the liquid inlet pipe b6 and the liquid outlet pipe b7 can be directly connected to the original pipeline, avoiding the need to re-lay out the pipeline and facilitating operation.

[0030] See also Figure 2 The first connecting pipe 10 and the second connecting pipe 11 are welded and fixed on the main body of the shell 1. The first connecting pipe 10 is connected to the liquid inlet chamber 4, and the second connecting pipe 11 is connected to the liquid outlet chamber 5. The first connecting pipe 10 is connected to the liquid inlet pipe a8 through a flange, and the second connecting pipe 11 is connected to the liquid outlet pipe a9 through a flange, thereby realizing the connection between the heat exchange enhancement tube and the shell and tube heat exchanger.

[0031] See also Figure 2 The heat exchange enhancement tube also includes: a liquid inlet partition 12 welded and fixed on the shell 1 and located in the liquid inlet cavity 4, located between the liquid inlet pipe b6 and the first connecting pipe 10, and the end of the liquid inlet partition 12 close to the partition plate 3 is set as an opening; and a liquid outlet partition 13 welded and fixed on the shell 1 and located in the liquid outlet cavity 5, located between the liquid outlet pipe b7 and the second connecting pipe 11, and the end of the liquid outlet partition 13 close to the partition plate 3 is set as an opening. The liquid entering the liquid inlet cavity 4 from the liquid inlet pipe b6 can reach the first connecting pipe 10 only after bypassing the liquid inlet partition 12, and the liquid entering the liquid outlet cavity 5 from the second connecting pipe 11 can reach the liquid outlet pipe b7 only after bypassing the liquid outlet partition 13. The liquid inlet partition 12 and the liquid outlet partition 13 increase the path of the liquid passing through the shell 1, thereby extending the contact time between the liquid and the refrigerant pipe 2, thereby enhancing the heat exchange effect.

[0032] When the existing shell and tube heat exchanger cannot meet the heat exchange demand, the utility model removes the shell and tube heat exchanger from the pipeline, then connects the first connecting pipe 10 to the liquid inlet pipe a8, connects the second connecting pipe 11 to the liquid outlet pipe a9, then installs the liquid inlet pipe b6 at the original installation position of the liquid inlet pipe a8, and installs the liquid outlet pipe b7 at the original installation position of the liquid outlet pipe a9. Before entering the original shell and tube heat exchanger, the liquid first enters the liquid inlet chamber 4 and exchanges heat with the refrigerant pipe 2 installed in the shell 1. After flowing out of the original shell and tube heat exchanger, the liquid enters the liquid outlet chamber 5 and exchanges heat with the refrigerant pipe 2 again, thereby increasing the contact time between the liquid and the refrigerant pipe 2 and enhancing the heat exchange effect. At the same time, there is no need to change the original pipeline, and the operation is convenient.

[0033] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. All equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A heat exchange enhancement tube, characterized in that: Assembled in shell and tube heat exchanger, including: A shell (1), wherein a refrigerant pipe (2) containing a refrigerant is arranged inside the shell (1); A partition plate (3) for dividing the space inside the housing (1) into a liquid inlet chamber (4) and a liquid outlet chamber (5); a liquid inlet pipe b (6) and a liquid outlet pipe b (7) fixed to the housing (1), the liquid inlet pipe b (6) being in communication with the liquid inlet chamber (4), the liquid outlet pipe b (7) being in communication with the liquid outlet chamber (5), the size and spacing of the liquid inlet pipe b (6) and the liquid outlet pipe b (7) being the same as the size and spacing of the liquid inlet pipe a (8) and the liquid outlet pipe a (9); a first connecting pipe (10) communicating with the liquid inlet chamber (4) and used to be connected to the liquid inlet pipe a (8); and A second connecting tube (11) communicated with the liquid outlet chamber (5) and used for connecting with the liquid outlet tube a (9).

2. The heat exchange enhancement tube according to claim 1, characterized in that: Also includes: a liquid inlet partition (12) fixed in the liquid inlet cavity (4) and located between the liquid inlet pipe b (6) and the first connecting pipe (10), wherein one end of the liquid inlet partition (12) close to the partition plate (3) is arranged to be an opening; and a liquid outlet partition (13) fixed in the liquid outlet cavity (5) and located between the liquid outlet pipe b (7) and the second connecting pipe (11), wherein one end of the liquid outlet partition (13) close to the partition plate (3) is arranged to be an opening.

3. The heat exchange enhancement tube according to claim 1, characterized in that: It also includes a refrigerant inlet pipe (14) installed on the shell (1) for supplying refrigerant to enter the refrigerant pipe (2), and a refrigerant outlet pipe (15) for supplying refrigerant to flow out of the refrigerant pipe (2).

4. A double-tube heat exchanger, characterized in that: The invention comprises a heat exchange enhancement tube and a shell and tube heat exchanger as claimed in any one of claims 1 to 3, wherein the liquid inlet pipe a (8) is connected and fixed to the first connecting pipe (10), and the liquid outlet pipe a (9) is connected and fixed to the second connecting pipe (11).

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