A tubular heat exchanger

Abstract

This utility model relates to auxiliary equipment for dairy and beverage plants, specifically a tubular heat exchanger, comprising: a shell and multiple inner tubes placed inside the shell. The two ends of the shell are a material inlet and a material outlet, respectively. A medium inlet is provided at the bottom of the shell near the material outlet, and a medium outlet is provided at the bottom of the shell near the material inlet. The medium outlet and the medium inlet are respectively connected to the material inlet and the material outlet. Tube sheets are provided at both ends inside the shell and welded to the inner wall of the shell. A baffle is provided at the center of the shell to reduce cleaning dead zones and greatly improve heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to production auxiliary equipment for dairy and beverage plants, specifically to a hygienic tubular heat exchanger with high heat exchange efficiency. Background Technology

[0002] Dairy factories frequently use heat exchangers to heat products during production. Tubular heat exchangers are a common type of heat exchange equipment widely used in dairy plants. However, due to their unique internal tube structure, tubular heat exchangers may not be thoroughly cleaned. Furthermore, traditional tubular heat exchangers have low heat exchange efficiency, resulting in significant energy waste. Utility Model Content

[0003] The purpose of this utility model is to provide a tubular heat exchanger to solve the above-mentioned problems.

[0004] This utility model achieves the above objectives through the following technical solutions:

[0005] A tubular heat exchanger includes: a shell and a plurality of inner tubes disposed within the shell, wherein the two ends of the shell are a material inlet and a material outlet, respectively; a medium inlet is provided at one end of the bottom of the shell near the material outlet; a medium outlet is provided at the other end of the bottom of the shell near the material inlet; the medium outlet and the medium inlet are respectively connected to the material inlet and the material outlet; tube sheets are disposed at both ends inside the shell and welded to the inner wall of the shell; and a baffle is disposed at the center of the interior of the shell.

[0006] The tube sheet has multiple fixing holes for the inner tube to pass through and be fixed.

[0007] The inner tubes are all seamless stainless steel SS316L tubes with an inner diameter between 12-19mm, and can withstand high temperature and high pressure.

[0008] The shell is made of stainless steel SS316L and has a cylindrical structure, which can accommodate more inner tubes and save space.

[0009] Both the material inlet and outlet are designed for hygiene, using stainless steel concentric reducers welded to the shell of the tubular heat exchanger. The inner diameter is larger on the side closer to the shell and smaller on the side farther from the shell. The material inlet and outlet are connected using hygienic clamp assemblies, which can withstand high temperatures and pressures.

[0010] The media inlet and outlet are hygienic and connected to the media inlet and outlet using hygienic clamp assemblies, capable of withstanding high temperature and high pressure. The media inlet and outlet are designed with cross-flow, meaning the media enters from the material outlet and returns from the material inlet, greatly improving heat exchange efficiency.

[0011] The baffle plate is located in the center of the shell of the tubular heat exchanger. It not only improves heat transfer efficiency but also supports the inner tubes. To reduce cleaning dead zones, the baffle plate is designed in an arc shape.

[0012] All material inlets and outlets are equipped with sealing rings. All sealing rings are hygienic, resistant to high temperature and high pressure, and meet FDA certification requirements.

[0013] Compared with the prior art, this utility model provides a tubular heat exchanger with the following advantages:

[0014] 1. The inlet and outlet of the medium and the inlet and outlet of the material adopt a cross-flow design, that is, the medium enters from the material outlet and returns from the material inlet, which greatly improves the heat exchange efficiency.

[0015] 2. The material enters the tubular heat exchanger through the material inlet. Through the relatively small inner heat exchange tubes, uniform and efficient heat exchange between the material and the medium is achieved, improving heat exchange efficiency and the utilization rate of the medium's energy. After heat exchange, the material exits the tubular heat exchanger through the material outlet, completing the entire heat exchange process.

[0016] 3. The baffle is located in the center of the shell of the tubular heat exchanger. The baffle not only improves the heat transfer effect but also supports the inner tubes. To reduce cleaning dead zones, the baffle is designed in an arc shape. Attached Figure Description

[0017] Figure 1 This is an overall drawing of the tubular heat exchanger of this utility model. Detailed Implementation

[0018] The present invention will be further described below with reference to the accompanying drawings.

[0019] like Figure 1 As shown, a tubular heat exchanger includes an inner tube 1, a shell 2, a material inlet 3, a material outlet 4, a medium inlet 5, a medium outlet 6, a tube sheet 7, and a baffle plate 8. The sanitary tubular heat exchanger includes the inner tube 1, the shell 2, a material inlet 3 installed at one end of the shell 2, a material outlet 4 installed at the other end of the shell 2, a medium inlet 5 located at the bottom of the shell 2, and a medium outlet located at the bottom of the other end of the tubular heat exchanger. The medium outlet is connected to the material inlet, and the medium inlet is connected to the material outlet. Tube sheets are installed at both ends inside the shell to fix the inner tube of the tubular heat exchanger. Both the material inlet and outlet are equipped with sanitary sealing rings. A baffle plate is installed in the middle of the tubular heat exchanger to improve heat exchange efficiency and support the inner tube.

[0020] In the above structure, during practical application, the material enters the tubular heat exchanger through material inlet 3 and passes through the smaller heat exchange inner tube 1, achieving uniform and efficient heat exchange between the material and the medium, improving heat exchange efficiency and the utilization rate of medium energy. After heat exchange, the material exits the tubular heat exchanger through material outlet 4, completing the entire heat exchange process. The medium flows through medium inlet 5 near the material outlet into the shell 2 of the tubular heat exchanger, and after heat exchange with the material, exits through medium outlet 6 near the side of material inlet 3. Tube sheets 7 are installed on both sides of the tubular heat exchanger to fix all the inner tubes. Baffles 8 are located in the center of the shell 2 of the tubular heat exchanger, which not only improves the heat transfer effect but also supports the inner tubes 1. Through the above structure, all heat exchange is completed.

[0021] The inner tubes are all seamless SS316L stainless steel tubes with an inner diameter between 12-19mm, capable of withstanding high temperature and pressure. The outer shell is also made of SS316L stainless steel, with a cylindrical structure to accommodate more inner tubes and save space. Both material inlets and outlets feature a hygienic design, using concentric stainless steel reducers welded to the shell of the tube heat exchanger. The inner diameter is larger on the side closer to the shell and smaller on the side further away. Hygienic clamp assemblies are used to connect the material inlets and outlets, ensuring high temperature and pressure resistance. Both medium inlets and outlets feature a hygienic design, with openings the same size as the medium inlets and outlets, and are connected using hygienic clamp assemblies, also ensuring high temperature and pressure resistance. The medium inlets and outlets are designed with cross-flow, meaning the medium enters from the material outlet and returns from the material inlet, significantly improving heat exchange efficiency. The tube sheet has evenly distributed fixing holes for securing the inner tubes; the number of fixing holes on the tube sheet is the same as the number of inner tubes in the tube heat exchanger. The tube sheet is circular and smoothly welded to the inner wall of the tubular heat exchanger shell along its outer edge. The baffles are positioned centrally inside the shell, improving heat transfer and supporting the inner tubes. To minimize cleaning dead zones, the baffles are designed in an arc shape. All seals in the tubular heat exchanger are hygienic, resistant to high temperature and pressure, and meet FDA certification requirements.

[0022] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A tube heat exchanger comprising: The shell (2) and multiple inner tubes (1) placed inside the shell (2) are characterized in that: the two ends of the shell (2) are material inlet (3) and material outlet (4) respectively; a medium inlet (5) is provided at the bottom of the shell (2) near the material outlet (4); a medium outlet (6) is provided at the bottom of the shell (2) near the material inlet (3); the medium outlet (6) is connected to the material inlet (3); the medium inlet (5) is connected to the material outlet (4); tube sheets (7) are provided at both ends inside the shell (2); the tube sheets (7) are welded to the inner wall of the shell (2); and a baffle plate (8) is provided at the center inside the shell (2). The tube sheet (7) has multiple fixing holes for the inner tube (1) to pass through and be fixed.

2. The tubular heat exchanger of claim 1, wherein: The inner tube (1) is a seamless stainless steel SS316L tube with an inner diameter between 12-19mm.

3. The tubular heat exchanger of claim 1, wherein: The shell (2) is made of stainless steel SS316L and has a cylindrical structure.

4. The tubular heat exchanger of claim 1, wherein: The material inlet (3) and material outlet (4) are welded to the housing (2) using stainless steel concentric reducers. The inner diameter is larger on the side closer to the housing (2) and smaller on the side farther from the housing (2). The housing (2) is connected to the material inlet (3) and material outlet (4) using clamp assemblies.

5. The tubular heat exchanger of claim 1, wherein: The housing (2) is connected to the medium inlet (5) and the medium outlet (6) by a clamp assembly; the inlet and outlet of the medium and the inlet and outlet of the material adopt a cross-flow design, that is, the medium enters from the material outlet (4) and returns from the material inlet (3).

6. The tubular heat exchanger of claim 1, wherein: The baffle (8) is bow-shaped.

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