High-power and high-energy-efficiency shell and tube condenser

Abstract

The utility model relates to a high-power high-energy-efficiency shell and tube condenser which comprises a condensation outer tube and heat exchange tubes, the heat exchange tubes are connected in the condensation outer tube in a penetrating mode, each heat exchange tube comprises a tube body and a plurality of fins, the fins are punched and connected on the tube body in a penetrating mode in a thermal expansion mode, and the thickness of the tube body is not larger than 1.5 times of the maximum thickness of the fins. A refrigerant inlet pipe is arranged on the upper portion of the middle position of the condensation outer pipe in a non-vertically-upward mode, an exhaust port is formed in the highest point of the middle position of the condensation outer pipe corresponding to the refrigerant inlet pipe in a vertically-upward mode, and the lowermost portion of the middle position of the condensation outer pipe corresponding to the refrigerant inlet pipe in a vertically-downward mode is connected out of a discharge cavity tank body. And the discharge cavity tank body is connected with a refrigerant outlet pipe in a non-vertical downward manner. The structure is simple and compact, and efficient heat exchange of large-flow refrigerants can be effectively considered.

Description

Technical Field

[0001] This utility model relates to a condenser, specifically a high-power, high-efficiency shell-and-tube condenser. Background Technology

[0002] Currently, the refrigeration units commonly equipped on ships use seawater to exchange heat with refrigerant through a condenser to achieve condensation. The heat exchange effect is limited by the equipment processing capabilities of the heat exchange tube toothing technology and the influence of the heat exchange tube wall thickness. The heat exchange effect is not as ideal as theoretical calculations suggest. At the same time, the refrigerant is usually connected to the top pipe and discharged from the bottom pipe. Due to the limitation of the single pipe connecting the condenser cavity directly to the outlet pipe, it cannot meet the demand for large-flow refrigerant supply when a large amount of refrigerant is connected. Therefore, it is no longer suitable for today's air conditioning and refrigeration industry. Summary of the Invention

[0003] This invention provides a high-power, high-efficiency shell-and-tube condenser with a simple and compact structure that can effectively balance high-flow-rate refrigerant and high-efficiency heat exchange.

[0004] The technical solution adopted by this utility model is: a high-power, high-efficiency shell-and-tube condenser, including an outer condenser tube and heat exchange tubes, with multiple heat exchange tubes inserted inside the outer condenser tube. The heat exchange tubes are characterized by: a tube body and multiple fins, the fins being stamped and thermally expanded to fit onto the tube body; the thickness of the tube body not exceeding 1.5 times the maximum thickness of the fins; a refrigerant inlet pipe is non-vertically upwardly positioned at the upper part of the middle position of the outer condenser tube; an exhaust port is vertically upwardly positioned at the highest point of the middle position of the outer condenser tube corresponding to the refrigerant inlet pipe; and a discharge chamber tank is vertically downwardly connected at the lowest part of the middle position of the outer condenser tube corresponding to the refrigerant inlet pipe; a refrigerant outlet pipe is non-vertically downwardly connected to the discharge chamber tank.

[0005] The fins are coated with a hydrophobic coating.

[0006] The condenser tube is welded to a tube sheet on one side. Multiple heat exchange tubes are expanded and inserted through the tube sheet. The tube sheet is then sealed with a sealing ring and bolted to lock the end cap. The end cap is connected to an inlet flange and an outlet flange, respectively. The inlet flange connects to one end of the multiple heat exchange tubes, and the outlet flange connects to the other end of the multiple heat exchange tubes. The inlet flange is connected to the flange end of the seawater inlet pipe via a sealing ring, and the outlet flange is connected to the flange end of the seawater outlet pipe via a sealing ring.

[0007] A safety valve is installed vertically upward at the highest point on one side of the condenser tube.

[0008] Two support seats are respectively provided on both sides of the discharge chamber tank of the condenser outer tube, and the lowest point of the support seat is lower than the discharge chamber tank.

[0009] The beneficial effects of this utility model are:

[0010] 1. Fins are expanded on the heat exchange tubes inside the condenser and coated with a hydrophobic coating. The refrigerant gas enters the outside and exchanges heat with the seawater inside the heat exchange tubes. It is not easy to form a gas film that hinders heat exchange, thus effectively improving the heat exchange effect and efficiency.

[0011] 2. The traditional straight-down refrigerant inlet structure is improved to a side-angled refrigerant inlet pipe connection. This increases the contact between the refrigerant and the heat exchange tubes, avoiding the reduced heat exchange efficiency caused by the traditional straight-down refrigerant inlet and outlet pipes. The pipe body is connected to the condenser outer pipe through the discharge chamber tank at the bottom. After the refrigerant is sent into the condenser outer pipe for heat exchange, it is buffered in the discharge chamber tank before being discharged through the refrigerant outlet pipe. This is suitable for large-flow refrigerant inlet and outlet, ensuring the heat exchange effect and efficiency of large-flow refrigerant. At the same time, the refrigerant outlet pipe is connected from the side of the discharge chamber tank, which can effectively solve the problems of low heat exchange efficiency and installation space of the lower pipe connection in the traditional direct downward connection. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 for Figure 1 The left view;

[0014] Figure 3 for Figure 1 AA view.

[0015] In the diagram: 1. Condenser outer tube; 2. Heat exchange tube; 3. Fin; 4. Tube sheet; 5. Inlet flange; 6. Outlet flange; 7. Refrigerant inlet pipe; 8. Discharge chamber tank; 9. Refrigerant outlet pipe; 10. Exhaust port; 11. Safety valve; 12. Support base; 13. End cap. Detailed Implementation

[0016] The following description, in conjunction with the accompanying drawings and embodiments, provides further details.

[0017] Figure 1-3 As shown: A high-power, high-efficiency shell-and-tube condenser includes an outer condenser tube 1, a heat exchange tube 2, fins 3, a tube sheet 4, an inlet flange 5, an outlet flange 6, a refrigerant inlet pipe 7, a discharge chamber tank 8, a refrigerant outlet pipe 9, an exhaust port 10, a safety valve 11, a support base 12, and an end cap 13.

[0018] Multiple heat exchange tubes 2 are inserted into the condenser outer tube 1. The heat exchange tubes 2 are made of multiple fins 3, which are stamped and thermally expanded to fit onto the tube body. The thickness of the tube body is no more than 1.5 times the maximum thickness of the fins. A refrigerant inlet pipe 7 is installed non-vertically upward at the upper part of the middle position of the condenser outer tube 1. An exhaust port 10 is installed vertically upward at the highest point of the middle position of the tube body corresponding to the refrigerant inlet pipe. A discharge chamber tank 8 is connected vertically downward at the lowest point of the middle position of the condenser outer tube corresponding to the refrigerant inlet pipe. A refrigerant outlet pipe 9 is connected non-vertically downward at the discharge chamber tank 8. Two support seats 12 are installed on both sides of the discharge chamber tank of the condenser outer tube 1, with the lowest point of the support seat lower than the discharge chamber tank.

[0019] A tube sheet 4 is welded to one side of the condenser tube 1. Multiple heat exchange tubes 2 are expanded and connected to the tube sheet 4. The tube sheet 4 is pressed with a sealing ring and bolted to lock the end cap 13. The end cap 13 is connected to the lower and upper parts of the water inlet flange 5 and the water outlet flange 6, respectively. The water inlet flange connects to one end of the multiple heat exchange tubes, and the water outlet flange connects to the other end of the multiple heat exchange tubes. The water inlet flange is connected to the flange end of the seawater inlet pipe through a sealing ring, and the water outlet flange is connected to the flange end of the seawater outlet pipe through a sealing ring.

[0020] In this embodiment, a safety valve 11 is installed vertically upward at the highest point on one side of the condenser outer pipe 1.

[0021] In this embodiment, the fins are coated with a hydrophobic coating.

[0022] In this embodiment, a refrigerant outlet pipe 9 is connected to the side of the discharge chamber tank 8.

[0023] In this embodiment, the other side of the tube can be a self-sealing end structure, or it can also be encapsulated with an end cap.

Claims

1. A high power and high energy efficiency shell and tube condenser comprising a condensing outer tube and heat exchange tubes, a plurality of heat exchange tubes are inserted into the condensing outer tube, characterized in that: The heat exchange pipe comprises a pipe body and a plurality of fins punched and expanded on the pipe body, the thickness of the pipe body is not greater than 1.5 times the maximum thickness of the fins, a refrigerant inlet pipe is arranged non-perpendicularly upward at an upper middle position of the condensing outer pipe, an exhaust port is arranged perpendicularly upward at the highest point of the middle position of the condensing outer pipe corresponding to the position of the refrigerant inlet pipe, and a discharge cavity tank body is connected perpendicularly downward at the lowest part of the middle position of the condensing outer pipe corresponding to the position of the refrigerant inlet pipe.

2. The high power, high efficiency shell and tube condenser of claim 1, wherein: The fins are coated with a hydrophobic coating.

3. The high power, high efficiency shell and tube condenser of claim 1, wherein: One side of the condensing outer pipe is welded with a pipe plate, a plurality of heat exchange pipes are expanded and connected to the pipe plate, an end cover is locked by a sealing ring and a bolt, the end cover is respectively connected with an inlet flange and an outlet flange, the inlet flange is connected with one end of the plurality of heat exchange pipes, the outlet flange is connected with the other end of the plurality of heat exchange pipes, the inlet flange is connected with a flange end of a seawater inlet pipe through a sealing ring, and the outlet flange is connected with a flange end of a seawater outlet pipe through a sealing ring.

4. The high power, high efficiency shell and tube condenser of claim 1, wherein: A safety valve is arranged perpendicularly upward at the highest point of one side of the condensing outer pipe.

5. The high power, high efficiency shell and tube condenser of claim 1, wherein: Two support seats are arranged respectively at both sides of the discharge cavity tank body of the condensing outer pipe, and the lowest point of the support seat is lower than the discharge cavity tank body.

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