A shell and tube heat exchanger with multiple heat exchange tube bundles

Abstract

The utility model discloses a shell and tube heat exchanger with a plurality of heat exchange tube bundles, comprising an outer tube and a heat exchange tube; the outer tube is hollow, the heat exchange tube is arranged in the hollow outer tube, the outer tube and the heat exchange tube are spirally coiled, a refrigerant channel is formed between the heat exchange tube and the outer tube, the refrigerant channel is used to introduce the refrigerant, the heat exchange tube is provided with a coolant channel, the coolant channel is used to circulate the coolant, the outer tube is provided with a tube sheet, the heat exchange tube is connected to the tube sheet, tube sleeves are provided at both ends of the outer tube, the tube sleeves are used to seal the outer tube, a plurality of heat exchange tubes are provided, the heat exchange area is increased by the plurality of heat exchange tubes, the structure is simple and compact, the refrigerant circulates in the refrigerant channel, the coolant circulates in the coolant channel, the outer tube and the heat exchange tube are spirally coiled to increase the circulation distance of the refrigerant and the refrigerant, and a plurality of heat exchange tubes are provided in the outer tube to increase the heat exchange area between the refrigerant and the refrigerant, thereby increasing the heat exchange effect.

Description

Technical Field

[0001] The utility model belongs to the technical field of shell and tube heat exchangers, and in particular relates to a shell and tube heat exchanger with a plurality of heat exchange tube bundles. Background Art

[0002] Shell and tube heat exchangers are widely used in refrigeration and air conditioning, petrochemical, pharmaceutical, food and other industries due to their strong anti-freeze, anti-fouling and anti-corrosion capabilities. They are used as condensers, evaporators, etc. in water-cooled hot and cold water fan units, air-cooled cold and water heat pump units, water source or ground source heat pump units, heat recovery machines and other related equipment.

[0003] The existing shell and tube heat exchanger includes an outer tube and a heat exchange tube, and the heat exchange tube is arranged in the inner tube. Usually, the heat exchange tube in the heat exchanger is a single heat exchange tube. When the refrigerant and the coolant flow, the heat exchange area of ​​the single heat exchange tube is limited, resulting in poor heat exchange effect and affecting use. Utility Model Content

[0004] The utility model aims to solve the above-mentioned technical problems existing in the prior art and provides a shell-and-tube heat exchanger with a plurality of heat exchange tube bundles, which has a simple and compact structure and a novel and reasonable design. The refrigerant circulates in the refrigerant channel and the coolant flows in the coolant channel. The outer tube and the heat exchange tube are spirally coiled to increase the circulation distance of the refrigerant and the refrigerant. At the same time, a plurality of heat exchange tubes are arranged in the outer tube. The heat exchange area between the refrigerant and the refrigerant is increased by the plurality of heat exchange tubes, thereby increasing the heat exchange effect.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A shell and tube heat exchanger with multiple heat exchange tube bundles, comprising

[0007] Outer tube; the outer tube is hollow;

[0008] A heat exchange tube, wherein the heat exchange tube is arranged in the hollow outer tube;

[0009] The characteristics are as follows: the outer tube and the heat exchange tube are spirally coiled, a refrigerant channel is formed between the heat exchange tube and the outer tube, the refrigerant channel is used to introduce the refrigerant, the heat exchange tube is provided with a refrigerant channel, the refrigerant channel is used for the circulation of the refrigerant, a tube sheet is provided in the outer tube, the heat exchange tube is connected to the tube sheet, pipe sleeves are provided at both ends of the outer tube, the pipe sleeves are used to close the outer tube, a plurality of heat exchange tubes are provided, and the heat exchange area is increased by a plurality of heat exchange tubes.

[0010] The structure is simple and compact, the design is novel and reasonable, the refrigerant circulates in the refrigerant channel, and the coolant circulates in the coolant channel. The outer tube and the heat exchange tube are spirally coiled to increase the circulation distance of the refrigerant and the refrigerant. At the same time, multiple heat exchange tubes are arranged in the outer tube. The heat exchange area between the refrigerant and the refrigerant is increased by multiple heat exchange tubes, thereby increasing the heat exchange effect.

[0011] Furthermore, a refrigerant inlet is provided at one end of the outer tube, which is connected to the refrigerant channel. A refrigerant outlet is provided at the other end of the outer tube, which is connected to the refrigerant channel. The refrigerant flows from the refrigerant inlet into the refrigerant channel and flows out from the refrigerant outlet.

[0012] Furthermore, the pipe sleeve at one end of the outer tube is provided with a refrigerant inlet, which is connected to the refrigerant channel. The pipe sleeve at the other end of the outer tube is provided with a refrigerant outlet, which is connected to the refrigerant channel. The refrigerant flows into the heat exchange tube through the refrigerant inlet and flows out from the refrigerant outlet.

[0013] Furthermore, the number of heat exchange tubes is 5-30.

[0014] Furthermore, the diameter of the heat exchange tube is 5-9.52 mm, and the wall thickness of the heat exchange tube is 0.2-0.8 mm.

[0015] Furthermore, the heat exchange tube is made of stainless steel or copper.

[0016] Furthermore, the tube sheet is provided with a mounting hole, and the heat exchange tube is installed in the mounting hole.

[0017] Furthermore, the heat exchange tube is fixed in the installation hole by welding or gluing.

[0018] Furthermore, a liquid storage space is formed between the tube sheet and the tube sleeve, and the liquid storage space is connected with the coolant channel of the heat exchange tube through the mounting hole.

[0019] Furthermore, an arc-shaped guide surface is provided on one side of the pipe sleeve.

[0020] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0021] In the utility model, the outer tube and the heat exchange tube are spirally coiled, and a refrigerant channel is formed between the heat exchange tube and the outer tube. The refrigerant channel is used to pass the refrigerant. The heat exchange tube is provided with a coolant channel, and the coolant channel is used for the circulation of the coolant. A tube sheet is provided in the outer tube, and the heat exchange tube is connected to the tube sheet. Both ends of the outer tube are provided with pipe sleeves, and the pipe sleeves are used to close the outer tube. A plurality of heat exchange tubes are provided, and the heat exchange area is increased by the plurality of heat exchange tubes. The structure is simple and compact, and the design is novel and reasonable. The refrigerant circulates in the refrigerant channel, and the coolant circulates in the coolant channel. By designing the outer tube and the heat exchange tube to be spirally coiled, the circulation distance of the refrigerant and the refrigerant is increased. At the same time, a plurality of heat exchange tubes are provided in the outer tube, and the heat exchange area between the refrigerant and the refrigerant is increased by the plurality of heat exchange tubes, thereby increasing the heat exchange effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The utility model is further described below in conjunction with the accompanying drawings:

[0023] Figure 1It is a structural schematic diagram of a shell-and-tube heat exchanger with multiple heat exchange tube bundles of the utility model;

[0024] Figure 2 For this utility model Figure 1 Right view of;

[0025] Figure 3 For this utility model Figure 2 Cross-sectional view of CC;

[0026] Figure 4 For this utility model Figure 1 A partial enlarged view of the middle A;

[0027] Figure 5 For this utility model Figure 3 A partial enlarged view of point B in the middle.

[0028] In the figure: 1-outer tube; 2-heat exchange tube; 3-refrigerant channel; 4-coolant channel; 5-tube plate; 6-tube sleeve; 7-refrigerant inlet; 8-refrigerant outlet; 9-refrigerant inlet; 10-refrigerant outlet; 11-installation hole; 12-liquid storage space; 13-arc guide surface. DETAILED DESCRIPTION

[0029] like Figures 1 to 5 As shown, a shell and tube heat exchanger of a multi-heat exchange tube bundle combination of the utility model comprises an outer tube 1, a heat exchange tube 2, a tube sheet 5 and a tube sleeve 6. The outer tube 1 is hollow, and the heat exchange tube 2 is arranged in the hollow outer tube 1. The outer tube 1 and the heat exchange tube 2 are spirally coiled. A refrigerant channel 3 is formed between the heat exchange tube 2 and the outer tube 1, and the refrigerant flows in the refrigerant channel 3. The heat exchange tube 2 is provided with a coolant channel 4, and the refrigerant flows in the refrigerant channel. Water is preferably used as the refrigerant. The tube sheet 5 is arranged in the outer tube 1 and is located at both ends of the outer tube 1 and is in interference fit with the end of the outer tube 1. The two ends of the heat exchange tube 2 are connected to the tube sheet 5. The tube sleeve 6 is sleeved on the tube sheet 5 and is in interference fit with the tube sheet 5. The outer tube 1 is closed by the tube sleeve 6, thereby closing the refrigerant channel 3. A plurality of heat exchange tubes 2 are provided, and the heat exchange area is increased by a plurality of heat exchange tubes 2.

[0030] The structure is simple and compact, the design is novel and reasonable, the refrigerant circulates in the refrigerant channel 3, and the coolant circulates in the coolant channel 4. The outer tube 1 and the heat exchange tube 2 are spirally coiled to increase the circulation distance of the refrigerant and the refrigerant. At the same time, a plurality of heat exchange tubes 2 are provided in the outer tube 1. The heat exchange area between the refrigerant and the refrigerant is increased by the plurality of heat exchange tubes 2, thereby increasing the heat exchange effect.

[0031] A refrigerant inlet 7 is provided at one end of the outer tube 1, and a refrigerant outlet 10 is provided at a pipe sleeve 6 near the end of the refrigerant inlet 7. The refrigerant inlet 7 is connected to the refrigerant channel 3, and the refrigerant outlet 10 is connected to the refrigerant channel 4. A refrigerant outlet 8 is provided at the other end of the outer tube 1, and a refrigerant inlet 9 is provided at the pipe sleeve 6 near the end of the refrigerant outlet 8. The refrigerant outlet 8 is connected to the refrigerant channel 3, and the refrigerant inlet 9 is connected to the refrigerant channel 4. The refrigerant flows from the refrigerant inlet 7 into the refrigerant channel 3 between the outer tube 1 and the heat exchange tube 2, and the refrigerant flows into the heat exchange tube 2 through the refrigerant inlet 9, thereby realizing heat transfer. After the heat exchange is completed, the refrigerant flows out from the refrigerant outlet 8, and the refrigerant flows out from the refrigerant outlet 10.

[0032] The number of the heat exchange tubes 2 in the utility model can be 5-30. In the present embodiment, 20 heat exchange tubes are selected. The specific number can be set according to actual use requirements.

[0033] In this embodiment, the diameter of the heat exchange tube 2 is 5-9.52 mm, and the wall thickness of the heat exchange tube 2 is 0.2-0.8 mm. The heat exchange tube 2 can be made of stainless steel or copper. The heat exchange tube 2 made of stainless steel is corrosion-resistant and has high tube body strength. It is not easy to break and rust. The heat exchange tube 2 made of copper has high compressive strength and good ductility and plasticity, so that the heat exchange tube 2 can have a longer service life.

[0034] The tube sheet 5 is provided with a mounting hole 11, which is a through hole. The heat exchange tube 2 is inserted into the mounting hole 11 and fixed in the mounting hole 11. The number of the mounting holes 11 is the same as the number of the heat exchange tubes 2. The end of each heat exchange tube 2 is correspondingly inserted into the mounting hole 11. At the same time, the heat exchange tube 2 is fixed in the mounting hole 11 by welding or gluing, preferably by welding, so that it is firmly fixed.

[0035] A liquid storage space 12 is formed between the tube sheet 5 and the tube sleeve 6. The liquid storage space 12 is connected to the refrigerant channel 4 of the heat exchange tube 2 through the mounting hole 11. When the refrigerant is introduced through the refrigerant inlet 9, it first enters the liquid storage space 12, and then the refrigerant is diverted through the mounting hole 11 and enters each heat exchange tube 2. After completing the heat transfer, the refrigerant flows out of the refrigerant channel 4, enters the liquid storage space 12 at one end of the refrigerant outlet 10, and then flows out from the refrigerant outlet 10.

[0036] An arc-shaped guide surface 13 is provided on one side of the pipe sleeve 6. The design of the arc-shaped guide surface 13 can guide the coolant when it flows out from the coolant outlet 10. At the same time, it can also reduce the impact of the coolant on the pipe sleeve 6 and increase the service life of the pipe sleeve 6.

[0037] In this embodiment, the heat exchange tube 2 can be a spiral tube, a smooth tube or an outer square tube. After the heat exchange tube 2 is fixed to the installation hole 11, the outer surface of the heat exchange tube 2 is sealed against the inner wall of the installation hole 11 to avoid forming a gap.

[0038] The above are only specific embodiments of the utility model, but the technical features of the utility model are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the utility model to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the utility model.

Claims

1. A shell and tube heat exchanger with multiple heat exchange tube bundles, comprising An outer tube; the outer tube is hollow; A heat exchange tube, wherein the heat exchange tube is arranged in the hollow outer tube; Features: The outer tube and the heat exchange tube are spirally coiled, and a refrigerant channel is formed between the heat exchange tube and the outer tube. The refrigerant channel is used to pass the refrigerant. The heat exchange tube is provided with a coolant channel, and the coolant channel is used for the circulation of the coolant. A tube sheet is provided in the outer tube, and the heat exchange tube is connected to the tube sheet. Both ends of the outer tube are provided with pipe sleeves, and the pipe sleeves are used to close the outer tube. There are multiple heat exchange tubes, and the heat exchange area is increased by the multiple heat exchange tubes.

2. The shell-and-tube heat exchanger with multiple heat exchange tube bundles according to claim 1, characterized in that: A refrigerant inlet is provided at one end of the outer tube, and the refrigerant inlet is connected to the refrigerant channel. A refrigerant outlet is provided at the other end of the outer tube, and the refrigerant outlet is connected to the refrigerant channel. The refrigerant flows into the refrigerant channel from the refrigerant inlet and flows out from the refrigerant outlet.

3. The shell-and-tube heat exchanger with multiple heat exchange tube bundles according to claim 1, characterized in that: The tube sleeve at one end of the outer tube is provided with a refrigerant inlet, and the refrigerant inlet is connected to the refrigerant channel. The tube sleeve at the other end of the outer tube is provided with a refrigerant outlet, and the refrigerant outlet is connected to the refrigerant channel. The refrigerant flows into the heat exchange tube through the refrigerant inlet and flows out from the refrigerant outlet.

4. The shell-and-tube heat exchanger with multiple heat exchange tube bundles according to claim 1, characterized in that: The number of the heat exchange tubes is 5-30.

5. The shell-and-tube heat exchanger with multiple heat exchange tube bundles according to claim 1, characterized in that: The diameter of the heat exchange tube is 5-9.52 mm, and the wall thickness of the heat exchange tube is 0.2-0.8 mm.

6. The shell-and-tube heat exchanger with multiple heat exchange tube bundles according to claim 1, characterized in that: The heat exchange tube is made of stainless steel or copper.

7. The shell-and-tube heat exchanger with multiple heat exchange tube bundles according to claim 1, characterized in that: The tube sheet is provided with a mounting hole, and the heat exchange tube is installed in the mounting hole.

8. The shell-and-tube heat exchanger with multiple heat exchange tube bundles according to claim 7, characterized in that: The heat exchange tube is fixed in the installation hole by welding or gluing.

9. The shell-and-tube heat exchanger with multiple heat exchange tube bundles according to claim 7, characterized in that: A liquid storage space is formed between the tube sheet and the tube sleeve, and the liquid storage space is communicated with the coolant channel of the heat exchange tube through the mounting hole.

10. The shell-and-tube heat exchanger with multiple heat exchange tube bundles according to claim 1, characterized in that: An arc-shaped guide surface is provided on one side of the pipe sleeve.

Images