Fluorine path liquid inlet and outlet pipe structure of shell and tube heat exchanger

Abstract

The utility model discloses a shell-and-tube heat exchanger fluorine path liquid inlet and outlet pipe structure which comprises a connecting plate and a connecting pipe, one end of the connecting pipe is connected with a connector, the other end of the connector is connected with a refrigerating system, and the other end of the connecting pipe is connected with the connecting plate and integrally welded with the connecting plate. The risk of loosening or leakage caused by vibration or external force is reduced, and long-term stable operation of the fluorine path liquid inlet and outlet pipe and the effect of a refrigerating system are ensured.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically to a structure for the inlet and outlet liquid pipes of a shell-and-tube heat exchanger for refrigerant. Background Technology

[0002] Shell-and-tube heat exchangers, also known as tube-and-tube heat exchangers, are important equipment widely used in chemical production. Shell-and-tube heat exchangers have dedicated pipes for the inlet and outlet of Freon or other fluorinated refrigerants. These pipes are usually connected to one or both ends of the heat exchange tubes to achieve refrigerant circulation and heat exchange. In the existing technology, the inlet and outlet pipes have insufficient connection strength, which can easily lead to loosening or leakage under vibration or external force. Utility Model Content

[0003] This invention provides a structure for the inlet and outlet liquid pipes of the refrigerant circuit in a shell-and-tube heat exchanger, which solves the above-mentioned problems.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A shell-and-tube heat exchanger refrigerant inlet and outlet pipe structure, including

[0006] Connecting plates;

[0007] Connecting pipe;

[0008] Its features include: one end of the connecting pipe is connected to a connector, the other end of the connector is connected to the refrigeration system, and the other end of the connecting pipe is connected to a connecting plate and welded together. The welded connection greatly improves the overall stability of the structure, reduces the risk of loosening or leakage due to vibration or external force, and ensures the long-term stable operation of the refrigerant inlet and outlet pipes and the effect of the refrigeration system.

[0009] Furthermore, a connecting sleeve is fitted onto the connecting pipe, and a connecting hole is opened on the connecting plate. The connecting sleeve is inserted into the connecting hole and welded to the connecting plate. The insertion design of the connecting sleeve and the connecting hole provides a preliminary fixing effect, while the subsequent welding further strengthens the connection strength between the connecting pipe and the connecting plate. This double fixing ensures that it remains stable under the action of external force, and at the same time, effectively prevents refrigerant leakage, which is crucial for maintaining the refrigeration efficiency and performance of the shell and tube heat exchanger.

[0010] Furthermore, a limiting hole is provided on the connector, and the connecting tube is inserted into the limiting hole and welded together. Through the insertion method, the connecting tube can be firmly fixed in the limiting hole. The setting of the limiting hole provides a precise installation position for the connecting tube, and the connection is further reinforced by welding after insertion, thereby achieving high-precision positioning and fixation.

[0011] Furthermore, the connector is equipped with a snap-fit ​​part, which is inserted into the connecting pipe. The snap-fit ​​part serves as a positioning feature for the installation position of the connector and the connecting pipe, while also making the installation of the connector simpler and faster.

[0012] Furthermore, the connecting pipe is provided with a limiting part, and the connecting sleeve is provided with a mating part. The limiting part and the mating part cooperate with each other. Through the cooperation of the limiting part and the mating part, a stable connection is formed between the connecting pipe and the connecting sleeve. At the same time, the tight connection between the two effectively prevents the refrigerant from leaking from the connection point during the transmission process.

[0013] Furthermore, the connecting plates can adopt end plate structures or tube plate structures, making the inlet and outlet liquid pipe structures suitable for different connecting plates, which can be selected according to the actual situation, thereby improving applicability.

[0014] Furthermore, the joint is made of copper, which has excellent corrosion resistance and can maintain its performance and stability even in humid or corrosive environments. Copper is easy to process and plastically deform, and copper joints can be customized in shape and size to meet various complex application requirements.

[0015] Furthermore, the connecting pipe is made of stainless steel, which is corrosion-resistant, has high strength and toughness, and can withstand greater pressure and tension. At the same time, stainless steel is more abundant and less expensive than copper.

[0016] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0017] This utility model discloses a refrigerant inlet and outlet pipe structure for a shell-and-tube heat exchanger. One end of the connecting pipe is connected to a connector, and the other end of the connector is connected to the refrigeration system. The other end of the connecting pipe is connected to a connecting plate and welded together. The welded connection greatly improves the overall stability of the structure, reduces the risk of loosening or leakage due to vibration or external force, and ensures the long-term stable operation of the refrigerant inlet and outlet pipes and the effectiveness of the refrigeration system. Attached Figure Description

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

[0019] Figure 1 This is a plan view of the refrigerant inlet and outlet pipe structure of a shell-and-tube heat exchanger according to the present invention.

[0020] Figure 2 This is a partial cross-sectional view of Example 1;

[0021] Figure 3 This is a partial cross-sectional view of Example 3;

[0022] Figure 4 This is a partial cross-sectional view of Example 2;

[0023] Figure 5 This is a partial sectional view of the tube sheet structure in Example 4;

[0024] Figure 6 This is a partial sectional view of the end plate structure in Example 4;

[0025] Figure 7 This is a full sectional view of the connector in this utility model;

[0026] Figure 8 This is a full sectional view of another connector in this utility model.

[0027] Figure 9 for Figure 6 A magnified view of a portion of point A in the middle.

[0028] In the picture,

[0029] 10-Connecting plate; 11-Connecting pipe; 12-Joint; 13-Connecting sleeve; 14-Limiting hole; 15-Flow channel; 16-Limiting surface; 17-Snap-fit ​​part; 18-Matching part; 19-Limiting part; 20-Connecting hole; 21-Cover; 22-Tube sheet; 23-End cover plate. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0032] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0033] like Figures 1 to 9As shown, this utility model discloses a refrigerant inlet and outlet pipe structure for a shell-and-tube heat exchanger. Its main function is to connect the other end of the connecting pipe 11 to the connecting plate 10 and weld them together. The welding connection greatly improves the overall stability of the structure, reduces the risk of loosening or leakage due to vibration or external force, and ensures the long-term stable operation of the refrigerant inlet and outlet pipes and the effect of the refrigeration system.

[0034] Example 1

[0035] This utility model discloses a refrigerant inlet and outlet pipe structure for a shell-and-tube heat exchanger, comprising a connecting pipe 11 and a connecting plate 10. The connecting plate 10 is provided with inlet and outlet ports. Specifically, there are two connecting pipes 11, one connecting to the inlet port and the other to the outlet port (hereinafter the same). The connecting plate 10 adopts a tube sheet structure, which includes a tube sheet 22 and a cover 21, with the tube sheet 22 and the cover 21 welded together. The connecting pipe 11 can be made of stainless steel, which has high strength and toughness, can withstand greater pressure and tension, and has a lower cost. The connecting pipe 11 contains a refrigerant supply... The medium channel for medium flow has a connector 12 connected to one end of the connecting pipe 11. The connector 12 is provided with a limiting hole 14 and a flow channel 15. The flow channel 15 communicates with the medium channel. The diameter of the limiting hole 14 is larger than the diameter of the flow channel 15. A limiting surface 16 is formed between the limiting hole 14 and the flow channel 15. When the connecting pipe 11 is inserted into the limiting hole 14, the end face of the connecting pipe 11 abuts against the limiting surface 16. The sealing effect at the connection between the connector 12 and the connecting pipe 11 is improved by welding. The other end of the connector 12 is connected to the refrigeration system.

[0036] The other end of the connecting pipe 11 is connected to the cover 21. The cover 21 is provided with a connecting hole 20. The connecting pipe 11 is inserted into the connecting hole 20 and the cover 21 and the connecting pipe 11 are connected by welding to realize the connection between the two and improve the connection strength between the two.

[0037] Example 2

[0038] This utility model discloses a refrigerant inlet / outlet pipe structure for a shell-and-tube heat exchanger, comprising a connecting pipe 11 and a connecting plate 10. The connecting plate 10 adopts a tube sheet structure, which includes a tube sheet 22 and a cover 21. The tube sheet 22 and the cover 21 are welded together. The connecting pipe 11 can be made of stainless steel, which has high strength and toughness, can withstand greater pressure and tension, and has a lower cost. The connecting pipe 11 has a medium channel for medium flow. One end of the connecting pipe 11 is connected to a connector 12, which has a snap-fit ​​part 17 and a flow channel 15. The flow channel 15 communicates with the medium channel. The snap-fit ​​part 17 has a limiting surface 16. When the snap-fit ​​part 17 is inserted into the connecting pipe 11, the end face of the connecting pipe 11 abuts against the limiting surface 16. By welding the connecting connector 12 to the connecting pipe 11, the sealing effect at the connection is improved. The other end of the connector 12 is connected to the refrigeration system.

[0039] The other end of the connecting pipe 11 is connected to the cover 21. The cover 21 is provided with a connecting hole 20. The connecting pipe 11 is inserted into the connecting hole 20 and the cover 21 and the connecting pipe 11 are connected by welding to realize the connection between the two and improve the connection strength between the two.

[0040] Example 3

[0041] This utility model discloses a refrigerant inlet / outlet pipe structure for a shell-and-tube heat exchanger, comprising a connecting pipe 11 and a connecting plate 10. The connecting plate 10 adopts a tube sheet structure, which includes a tube sheet 22 and a cover 21. The tube sheet 22 and the cover 21 are welded together. The connecting pipe 11 can be made of stainless steel, which has high strength and toughness, can withstand greater pressure and tension, and has a lower cost. The connecting pipe 11 has a medium channel for medium flow. One end of the connecting pipe 11 is connected to a connector 12, which has a limiting hole 14 and a flow channel 15. The flow channel 15 communicates with the medium channel. The diameter of the limiting hole 14 is larger than the diameter of the flow channel 15, and a limiting surface 16 is formed between the limiting hole 14 and the flow channel 15. When the connecting pipe 11 is inserted into the limiting hole 14, the end face of the connecting pipe 11 abuts against the limiting surface 16. By welding the connecting connector 12 to the connecting pipe 11, the sealing effect at the connection is improved. The other end of the connector 12 is connected to the refrigeration system.

[0042] A connecting sleeve 13 is fitted onto the other end of the connecting pipe 11. The connecting sleeve 13 can be made of carbon steel or other metal materials. Alternatively, the connecting sleeve 13 can adopt other connector structures with the same effect in the prior art. The connecting sleeve 13 is provided with a mating part 18, and the connecting pipe 11 is provided with a limiting part 19. The limiting part 19 and the mating part 18 cooperate to achieve the connection between the two, and the two are fixed by welding. The cover 21 is provided with a connecting hole 20. After the connecting sleeve 13 and the connecting pipe 11 are connected, the connecting sleeve 13 and the connecting hole 20 cooperate. The connecting sleeve 13 is provided with a positioning part, which is snapped into the connecting hole 20. The cover 21 and the connecting sleeve 13 are connected by welding to achieve the connection between the two.

[0043] Example 4

[0044] This utility model discloses a refrigerant inlet / outlet pipe structure for a shell-and-tube heat exchanger, comprising a connecting pipe 11 and a connecting plate 10. The connecting plate 10 adopts a tube sheet structure or an end plate structure. The tube sheet structure includes a tube sheet 22 and a cover 21, which are welded together. The end plate structure includes an end cover plate 23. The connecting pipe 11 can be made of stainless steel, which has high strength and toughness, can withstand greater pressure and tension, and has a lower cost. The connecting pipe 11 has a medium channel for medium flow. One end of the connecting pipe 11 is connected to a connector 12, which has a snap-fit ​​part 17 and a flow channel 15. The flow channel 15 communicates with the medium channel. The snap-fit ​​part 17 has a limiting surface 16. When the snap-fit ​​part 17 is inserted into the connecting pipe 11, the end face of the connecting pipe 11 abuts against the limiting surface 16. By welding the connecting connector 12 to the connecting pipe 11, the sealing effect at the connection is improved. The other end of the connector 12 is connected to the refrigeration system.

[0045] A connecting sleeve 13 is fitted onto the other end of the connecting pipe 11. The connecting sleeve 13 can be made of carbon steel or other metal materials. Alternatively, the connecting sleeve 13 can adopt other connector structures with the same effect in the prior art. The connecting sleeve 13 is provided with a mating part 18, and the connecting pipe 11 is provided with a limiting part 19. The limiting part 19 and the mating part 18 cooperate to achieve the connection between the two, and the two are fixed by welding. The cover 21 or the end cover plate 23 is provided with a connecting hole 20. After the connecting sleeve 13 is connected to the connecting pipe 11, the connecting sleeve 13 cooperates with the connecting hole 20. The connecting sleeve 13 is provided with a positioning part, which is snapped into the connecting hole 20. The connection between the two is achieved by welding the end cover plate 23 and the connecting sleeve 13, or by welding the cover 21 and the connecting sleeve 13.

[0046] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to solve essentially the same technical problems and achieve essentially the same technical effects are all covered within the protection scope of this utility model.

Claims

1. A refrigerant inlet and outlet pipe structure for a shell-and-tube heat exchanger, comprising: Connecting plates; Connecting pipe; Its features are: One end of the connecting pipe is connected to a connector, the other end of the connector is connected to the refrigeration system, and the other end of the connecting pipe is connected to the connecting plate and welded together.

2. The refrigerant inlet and outlet pipe structure of a shell-and-tube heat exchanger according to claim 1, characterized in that: A connecting sleeve is fitted onto the connecting pipe, and a connecting hole is provided on the connecting plate. The connecting sleeve is inserted into the connecting hole and welded to the connecting plate.

3. The refrigerant inlet and outlet pipe structure of a shell-and-tube heat exchanger according to claim 1, characterized in that: The connector has a limiting hole, and the connecting pipe is inserted into the limiting hole and welded together.

4. The refrigerant inlet and outlet pipe structure of a shell-and-tube heat exchanger according to claim 1, characterized in that: The connector is provided with a snap-fit ​​part, which is inserted into the connecting pipe.

5. The refrigerant inlet and outlet pipe structure of a shell-and-tube heat exchanger according to claim 1, characterized in that: The connecting pipe is provided with a limiting part, and the connecting sleeve is provided with a mating part, and the limiting part and the mating part cooperate with each other.

6. The refrigerant inlet and outlet pipe structure of a shell-and-tube heat exchanger according to claim 1, characterized in that: The connecting plate can be an end plate structure or a tube plate structure.

7. The refrigerant inlet and outlet pipe structure of a shell-and-tube heat exchanger according to claim 1, characterized in that: The connector is made of copper.

8. The refrigerant inlet and outlet pipe structure of a shell-and-tube heat exchanger according to claim 1, characterized in that: The connecting pipe is made of stainless steel.

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