Combined heat exchanger

Abstract

The utility model discloses a combined heat exchanger, which relates to the technical field of heat exchanger equipment and comprises a heat exchanger body, a plurality of groups of heat exchange pipes are arranged in the heat exchanger body, air guide pipes are arranged in the plurality of groups of heat exchange pipes, and the other ends of a first connecting pipe and a second connecting pipe are fixedly connected with an air inlet pipe and an air outlet pipe respectively. The air inlet pipe and the air outlet pipe are fixed to the outer side of the heat exchanger body. According to the utility model, through the mutual matching between the air inlet pipe and the first connecting pipe, when liquid flows in the heat exchange pipe, air also flows in the air guide pipe, and the air is guided through the air inlet pipe, so that the air enters one end of the air guide pipe from the first connecting pipe and then is discharged from the other end in the air guide pipe, the second connecting pipe and the air outlet pipe; heat exchange is conducted through the gas-assisted heat exchange pipe, the heat transfer efficiency of the heat exchange pipe is improved, certain energy consumption is reduced through gas-assisted heat exchange, and the practicability of the whole combined heat exchanger is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchanger equipment, and particularly relates to a combined heat exchanger. Background Technique

[0002] A heat exchanger, also known as a heat exchanger, is a device widely used in industrial production. Its main function is to transfer heat between fluids at different temperatures to achieve process purposes such as heating, cooling, evaporation, or condensation. It is a device for realizing heat transfer and can transfer part of the heat of the hot fluid to the cold fluid.

[0003] The working principle of the heat exchanger is based on thermodynamic principles such as heat conduction, convection, and radiation. In a shell-and-tube heat exchanger, the hot medium where the heat source or heat load is located is transmitted through the pipes in the heat exchanger, and the heat is transferred to another cold medium flowing outside the pipes, thereby realizing the transfer of heat. By increasing the contact area and optimizing the fluid flow path, the heat exchanger can transfer heat more effectively.

[0004] However, some heat exchangers in the prior art only exchange heat through the flow of liquid, with low heat exchange efficiency, relying on a certain amount of water resources, which will cause a certain amount of water resource consumption and pollution. Content of the Utility Model

[0005] Based on this, the purpose of the present utility model is to provide a combined heat exchanger to solve the technical problems that some heat exchangers only exchange heat through the flow of liquid, with low heat exchange efficiency, relying on a certain amount of water resources, which will cause a certain amount of water resource consumption and pollution.

[0006] To achieve the above purpose, the present utility model provides the following technical solution: A combined heat exchanger includes a heat exchanger body. A plurality of heat exchange tubes are arranged inside the heat exchanger body. Air pipes are arranged inside each of the plurality of heat exchange tubes. One end of the heat exchanger body is fixedly connected with a first connection pipe and a second connection pipe. One end of the first connection pipe is fixedly connected with one end of the air pipe, and the other end of the second connection pipe is fixedly connected with the other end of the air pipe. The other ends of the first connection pipe and the second connection pipe are respectively fixedly connected with an air inlet pipe and an air outlet pipe. The air inlet pipe and the air outlet pipe are fixed on the outer side of the heat exchanger body.

[0007] By adopting the above technical solution, during use, through the mutual cooperation between the air inlet pipe and the first connection pipe, gas enters the air pipe. The air pipe is located inside the heat exchange tube. When the liquid flows inside the heat exchange tube, the gas also flows inside the air pipe. By guiding the gas through the air inlet pipe, the gas enters one end of the air pipe from the first connection pipe, and then is discharged from the other end inside the air pipe, through the second connection pipe and the air outlet pipe. The gas is used to assist the heat exchange tube in heat exchange, which is beneficial to improving the heat transfer efficiency of the heat exchange tube, and reducing a certain amount of energy consumption through gas-assisted heat exchange, thereby improving the practicability of the entire combined heat exchanger.

[0008] The present utility model is further configured such that all the heat exchange tubes are of U-shaped structure, the diameter of the air guide pipe is equal to the radius of the heat exchange tube, the air guide pipe is also of U-shaped structure and is located inside the heat exchange tube, and the air guide pipe is made of stainless steel material.

[0009] By adopting the above technical solution, when the air guide pipe and the heat exchange tube are both of U-shaped structure, it can enable the gas to better transfer heat to the liquid between the air guide pipe and the heat exchange tube during the flow in the air guide pipe. When the air guide pipe is made of stainless steel material, the service life of the air guide pipe can be extended.

[0010] The present utility model is further configured such that tube sheets are snap-connected to both ends inside the heat exchanger body, and the heat exchange tubes are snap-connected inside the tube sheets.

[0011] By adopting the above technical solution, the provided tube sheets can enable the heat exchange tubes to be stably arranged inside the heat exchanger body, preventing the tubes from loosening or being damaged due to fluid impact or vibration. In addition, the tube sheets also support other components such as the tube pass partition plates, ensuring the overall structural stability and reliability of the heat exchanger.

[0012] The present utility model is further configured such that a plurality of baffle plates are fixedly installed inside the heat exchanger body, the heat exchange tubes penetrate through the baffle plates, and a plurality of card slots for cooperating with the heat exchange tubes are provided inside the baffle plates.

[0013] By adopting the above technical solution, the mutual cooperation between the provided baffle plates and the card slots can play a role in supporting and limiting the heat exchange tubes, and can also make the fluid stay in the heat exchange tubes for a longer time, thereby increasing the opportunity of heat exchange.

[0014] The present utility model is further configured such that a liquid inlet pipe and a liquid discharge pipe are provided at both ends outside the heat exchanger body, the liquid inlet pipe is located at the pipe orifice of the heat exchange tube, and the liquid discharge pipe is located at the other end of the heat exchange tube.

[0015] By adopting the above technical solution, the mutual cooperation between the provided liquid inlet pipe and the liquid discharge pipe enables the entire heat exchanger body to normally carry out heat exchange work.

[0016] The present utility model is further configured such that a plurality of connecting flanges are provided outside the heat exchanger body, and a plurality of fixing bolts are provided on the connecting flanges.

[0017] By adopting the above technical solution, the mutual cooperation between the provided connecting flanges and the fixing bolts is beneficial to splicing the outer shell of the heat exchanger body, making the outer shell of the entire heat exchanger body have certain sealing performance and stability.

[0018] The utility model is further configured such that a support leg is fixedly connected to the bottom of the heat exchanger body, and an installation groove for the use of the intake pipe and the outlet pipe is provided on the outer side of the heat exchanger body.

[0019] By adopting the above technical solution, the provided support leg is beneficial to standing the entire heat exchanger body on the ground for use, and through the installation groove, the intake pipe and the outlet pipe can be flexibly connected to and disassembled from the heat exchanger body.

[0020] To sum up, the utility model mainly has the following beneficial effects:

[0021] Through the mutual cooperation between the intake pipe and the first connecting pipe of the utility model, gas enters the guide pipe. The guide pipe is located inside the heat exchange pipe. When liquid flows in the heat exchange pipe, gas also flows in the guide pipe. Through the intake pipe for gas guiding, the gas enters one end of the guide pipe from the first connecting pipe, and then is discharged from the other end inside the guide pipe, through the second connecting pipe and the outlet pipe. By using gas to assist the heat exchange pipe in heat exchange, it is beneficial to improve the heat transfer efficiency of the heat exchange pipe, and through gas-assisted heat exchange, a certain amount of energy consumption is reduced, improving the practicability of the entire combined heat exchanger;

[0022] When both the guide pipe and the heat exchange pipe provided by the utility model are of U-shaped structure, it can enable the gas to better transfer heat to the liquid between the guide pipe and the heat exchange pipe when flowing in the guide pipe. When the guide pipe is made of stainless steel material, the service life of the guide pipe can be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 is a schematic diagram of the internal structure of the utility model;

[0025] Figure 3 is a schematic diagram of the first perspective of the sectional structure of the utility model;

[0026] Figure 4 is a schematic diagram of the second perspective of the sectional structure of the utility model;

[0027] Figure 5 is of the utility model Figure 3 partial enlarged view of A in.

[0028] In the figure: 1, heat exchanger body; 2, liquid inlet pipe; 3, liquid discharge pipe; 4, support leg; 5, connecting flange; 6, intake pipe; 7, outlet pipe; 8, baffle plate; 9, heat exchange pipe; 10, tube sheet; 11, guide pipe; 12, installation groove; 13, first connecting pipe; 14, second connecting pipe; 15, clamping groove. DETAILED DESCRIPTION OF THE INVENTION

[0029] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model, and should not be construed as a limitation to the present utility model.

[0030] The embodiments of the present utility model will be described below according to its overall structure.

[0031] A combined heat exchanger, as Figures 1-5 shown, includes a heat exchanger body 1. A plurality of heat exchange tubes 9 are arranged inside the heat exchanger body 1. Air ducts 11 are arranged inside each of the plurality of heat exchange tubes 9. One end of the heat exchanger body 1 is fixedly connected with a first connecting pipe 13 and a second connecting pipe 14. One end of the first connecting pipe 13 is fixedly connected with one end of the air duct 11, and the other end of the second connecting pipe 14 is fixedly connected with the other end of the air duct 11. The other ends of the first connecting pipe 13 and the second connecting pipe 14 are respectively fixedly connected with an air inlet pipe 6 and an air outlet pipe 7. The air inlet pipe 6 and the air outlet pipe 7 are fixed to the outside of the heat exchanger body 1.

[0032] During use, through the mutual cooperation between the air inlet pipe 6 and the first connecting pipe 13, gas enters the air duct 11. The air duct 11 is located inside the heat exchange tube 9. When liquid flows in the heat exchange tube 9, gas also flows in the air duct 11. By guiding gas through the air inlet pipe 6, the gas enters one end of the air duct 11 from the first connecting pipe 13, and then is discharged from the other end inside the air duct 11, the second connecting pipe 14 and the air outlet pipe 7. By using gas to assist the heat exchange tube 9 in heat exchange, it is beneficial to improve the heat transfer efficiency of the heat exchange tube 9, and by using gas to assist in heat exchange, a certain amount of energy consumption is reduced, improving the practicality of the entire combined heat exchanger.

[0033] When the air duct 11 and the heat exchange tube 9 are both of U-shaped structure, it can enable the gas to better transfer heat to the liquid between the air duct 11 and the heat exchange tube 9 when flowing in the air duct 11. When the air duct 11 is made of stainless steel, the service life of the air duct 11 can be extended. In addition, the tube sheet 10 enables the heat exchange tubes 9 to be stably arranged inside the heat exchanger body 1, preventing the tubes from loosening or being damaged due to fluid impact or vibration. In addition, the tube sheet 10 also supports other components such as the tube-side partition plate, ensuring the overall structural stability and reliability of the heat exchanger.

[0034] In this embodiment, the mutual cooperation between the baffle plate 8 and the clamping groove 15 can play a role in supporting and limiting the heat exchange tubes 9, and can also make the residence time of the fluid in the heat exchange tubes 9 longer, thereby increasing the opportunity for heat exchange. Moreover, the mutual cooperation between the liquid inlet pipe 2 and the liquid discharge pipe 3 enables the entire heat exchanger body 1 to carry out heat exchange work normally. The mutual cooperation between the connecting flange 5 and the fixing bolts is conducive to splicing the outer shell of the heat exchanger body 1, making the outer shell of the entire heat exchanger body 1 have a certain degree of sealing and stability. Finally, the support legs 4 are beneficial to standing the entire heat exchanger body 1 on the ground for use, and through the installation groove 12, the air inlet pipe 6 and the air outlet pipe 7 can be flexibly connected to and disassembled from the heat exchanger body 1.

[0035] Although the embodiments of the present invention have been shown and described, this specific embodiment is only an interpretation of the present invention and is not a limitation thereof. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can make modifications, substitutions and variations without creative contributions to the embodiments as needed, but as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A combined heat exchanger, comprising a heat exchanger body (1), characterized in that: A plurality of groups of heat exchange tubes (9) are arranged in the heat exchanger body (1), and an air guide tube (11) is arranged in each of the plurality of groups of heat exchange tubes (9). A first connecting tube (13) and a second connecting tube (14) are fixedly connected at one end of the heat exchanger body (1), the first connecting tube (13) is fixedly connected to one end of the air guide tube (11), the second connecting tube (14) is fixedly connected to the other end of the air guide tube (11), and the other ends of the first connecting tube (13) and the second connecting tube (14) are respectively fixedly connected to an air inlet tube (6) and an air outlet tube (7), and the air inlet tube (6) and the air outlet tube (7) are fixed to the outside of the heat exchanger body (1).

2. A combined heat exchanger according to claim 1, characterized in that: The heat exchange tubes (9) are all of U-shaped structure; the diameter of the air guide tube (11) is equal to the radius of the heat exchange tube (9); the air guide tube (11) is also of U-shaped structure and is located inside the heat exchange tube (9); the air guide tube (11) is made of stainless steel.

3. A combined heat exchanger according to claim 1, characterized in that: Tube sheets (10) are snap-connected at both ends of the heat exchanger body (1), and the heat exchange tubes (9) are snap-connected in the tube sheets (10).

4. A combined heat exchanger according to claim 1, characterized in that: A plurality of groups of baffles (8) are fixedly installed in the heat exchanger body (1), the heat exchange tubes (9) pass through the baffles (8), and a plurality of groups of slots (15) for use with the heat exchange tubes (9) are provided in the baffles (8).

5. The combined heat exchanger according to claim 1, characterized in that: A liquid inlet pipe (2) and a liquid discharge pipe (3) are provided at both ends of the outer side of the heat exchanger body (1); the liquid inlet pipe (2) is located at the pipe mouth of the heat exchange tube (9), and the liquid discharge pipe (3) is located at the other end of the heat exchange tube (9).

6. A combined heat exchanger according to claim 1, characterized in that: A plurality of connection flanges (5) are arranged on the outside of the heat exchanger body (1), and a plurality of fixing bolts are arranged on the connection flanges (5).

7. A combined heat exchanger according to claim 1, characterized in that: The bottom of the heat exchanger body (1) is fixedly connected to a support leg (4), and the outside of the heat exchanger body (1) is provided with a mounting groove (12) for use with the air inlet pipe (6) and the air outlet pipe (7).

Images