Corrugated pipe type efficient heat exchanger

Abstract

The utility model discloses a corrugated pipe type efficient heat exchanger which comprises connecting discs arranged in the two ends of a heat exchanger shell, mounting holes are formed in the two connecting discs, a corrugated heat exchange pipe is arranged in the heat exchanger shell, and the two ends of the corrugated heat exchange pipe extend into the mounting holes. The end socket covers are arranged on the two sides of the heat exchanger shell, one end of each end socket cover is provided with a hot fluid inlet, one end of each end socket cover is provided with a hot fluid outlet, a circulating water inlet is formed in the lower portion of one end of the heat exchanger shell, a circulating water outlet is formed in the upper portion of the other end of the heat exchanger shell, and the heat exchange pipes are corrugated heat exchange pipes. The internal circulation diameter of the corrugated heat exchange pipe is continuously changed, so that the flow speed of hot fluid is continuously changed, turbulent flow is formed, the heat exchange coefficient of the hot fluid side is increased, accumulation of fine impurities can be reduced through regular discharge through the low-point drain valve, and the use effect of the efficient heat exchanger is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of high-efficiency heat exchangers, in particular to a bellows-type high-efficiency heat exchanger. Background Art

[0002] Due to process requirements, it is a very common phenomenon for various fluids to exchange heat in chemical plants. Usually, the temperature of some hot fluids cannot be fully utilized and recovered by waste heat technology because they are low-grade heat. The commonly used method is to transfer this part of heat with circulating water. After the hot fluid exchanges heat with the circulating water, the heat is transferred to the circulating water, and then the circulating water temperature is lowered through evaporation in the circulating water cooling tower. Then, through the drive of the circulating water pump, the heat of the hot fluid can be continuously removed through repeated cycles to achieve the purpose of continuous operation of the device.

[0003] The Chinese patent publication number is CN218821779U, and the authorization announcement date is April 7, 2023. The high-efficiency heat exchanger belongs to the field of heat exchange technology, including a heat exchange cylinder and a spiral heat exchange tube arranged in the heat exchange cylinder. The outer walls of both sides of the heat exchange cylinder are provided with through holes, and the two through holes of the heat exchange cylinder are respectively fixed with two water inlet pipes and two drain pipes fixedly connected to the heat exchange tube. The inner walls of both sides of the heat exchange cylinder are rotatably connected with connecting pipes, and the outer walls of the two connecting pipes are fixedly connected with connecting rings. Two stirring boxes are symmetrically fixed between the two connecting rings. The stirring box is slidably connected with a sliding plate, and one side of the sliding plate is symmetrically fixed with two push columns sliding in the stirring box. The push column extends outside the stirring box, and the end face of the push column located outside the stirring box is fixedly connected with a scraper for cleaning the inner wall of the heat exchange cylinder. The high-efficiency heat exchanger can not only effectively improve the heat exchange efficiency, but also automatically and effectively clean the inner wall of the heat exchange cylinder.

[0004] The heat exchange tubes commonly used in existing high-efficiency heat exchangers are made of 20# steel, stainless steel, non-ferrous metals, etc., and the heat exchange tube type adopts straight tubes. During use, there are problems such as slow circulating water flow rate and some dirt deposition on the circulating water side due to obstruction of the heat exchanger baffle, which leads to a decrease in heat exchange effect year by year and cannot meet the use requirements. Utility Model Content

[0005] The purpose of the utility model is to provide a high-efficiency heat exchanger of the bellows type, so as to solve the problem that the heat exchange tube materials proposed in the above background technology are 20# steel, stainless steel, non-ferrous metals, etc., and the heat exchange tube type adopts straight tubes. During use, there is a problem that the circulating water side is blocked by the heat exchanger baffle, resulting in slow circulating water flow rate, some dirt deposition, and the heat exchange effect decreases year by year, which cannot meet the use requirements.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a high-efficiency heat exchanger of the bellows type, comprising a heat exchanger shell, and also comprising:

[0007] A connecting plate, which is arranged inside the two ends of the heat exchanger shell, two connecting plates are provided, and the two connecting plates are connected to the heat exchanger shell as a whole, and the two connecting plates are provided with mounting holes, and the inside of the heat exchanger shell is provided with corrugated heat exchange tubes, and at least sixteen corrugated heat exchange tubes are provided, and the corrugated heat exchange tubes are arranged equidistantly inside the heat exchanger shell, and both ends of the corrugated heat exchange tubes extend to the inside of the mounting hole, and the corrugated heat exchange tubes are plugged into the connecting plates;

[0008] A head cover is arranged on both sides of the heat exchanger shell. There are two head covers, and the head covers are connected to the heat exchanger shell by screws. A hot fluid inlet and a hot fluid outlet are respectively arranged at one end of the two head covers, and the hot fluid inlet and the hot fluid outlet are integrated with the head cover. A circulating water inlet is arranged below one end of the heat exchanger shell, and a circulating water outlet is arranged above the other end of the heat exchanger shell, and the circulating water outlet and the circulating water inlet are connected to the heat exchanger shell as a whole.

[0009] Preferably, support seats are provided below both ends of the heat exchanger shell, two support seats are provided, and the support seats are fixedly connected to the heat exchanger shell, a first sealing ring is provided between the head cover and the heat exchanger shell, a second sealing ring is provided inside the mounting hole, and the second sealing ring is connected to the connecting plate as a whole, the second sealing ring is provided on the outside of the corrugated heat exchange tube, and the second sealing ring is in contact with the corrugated heat exchange tube.

[0010] Preferably, the interior of the heat exchanger shell is provided with a baffle, at least four baffles are provided, and the baffles are fixedly connected to the heat exchanger shell, the baffles are staggered up and down inside the heat exchanger shell, the corrugated heat exchange tubes are connected with the baffles, and the corrugated heat exchange tubes are in contact with the baffles.

[0011] Preferably, an anti-collision plate is provided inside the heat exchanger shell, two anti-collision plates are provided, and the anti-collision plates are fixedly connected to the heat exchanger shell, and the two anti-collision plates are respectively provided below the circulating water outlet and above the circulating water inlet.

[0012] Preferably, a high-point exhaust valve is provided above one end of the heat exchanger shell, and the high-point exhaust valve is connected to the heat exchanger shell as a whole.

[0013] Preferably, a low-point shower valve is provided at the lower end of the heat exchanger shell, and the low-point shower valve is connected to the heat exchanger shell as a whole.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The utility model device is provided with a corrugated heat exchange tube and a baffle. The baffle makes the water flow back outside the corrugated heat exchange tube. The inner flow diameter of the corrugated heat exchange tube changes continuously, causing the flow velocity of the hot fluid to change continuously, forming turbulence, and improving the heat transfer coefficient on the hot fluid side.

[0016] The utility model device is provided with a high-point exhaust valve. Before the high-efficiency heat exchanger is started, after the circulating water supply is turned on, the high-point exhaust valve is opened to discharge the air in the space, so as to ensure that the circulating cooling water can fill the space outside the corrugated heat exchange tube in the entire heat exchanger shell, and avoid the formation of air resistance in the space outside the corrugated heat exchange tube, thereby preventing the circulating water from filling the entire space and affecting the heat exchange efficiency.

[0017] The utility model device is provided with a low-point shower valve, which can reduce the accumulation of fine impurities by regular discharge, thereby avoiding the accumulation of fine impurities in the circulating water outside the corrugated heat exchange tube;

[0018] The utility model device provides an anti-impact plate, which prevents the corrugated heat exchange tube from being directly impacted by a large amount of water, thereby preventing the heat exchange tube from vibrating and deforming, thereby protecting the corrugated heat exchange tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a cross-sectional view of the utility model;

[0021] Figure 3 For the utility model Figure 2 A partial enlarged view of area A;

[0022] Figure 4 This is a diagram showing the connection relationship between the connection plate of the utility model, the heat exchanger shell and the corrugated heat exchange tube;

[0023] Figure 5 This is a structural diagram of the connection between the baffle plate, the heat exchanger shell and the corrugated heat exchange tube of the utility model;

[0024] Figure 6 This is a structural diagram of the corrugated heat exchange tube of the utility model.

[0025] In the figure: 1. heat exchanger shell; 2. support seat; 3. head cover; 4. hot fluid inlet; 5. circulating water outlet; 6. high point exhaust valve; 7. hot fluid outlet; 8. circulating water inlet; 9. low point shower valve; 10. connecting plate; 11. corrugated heat exchange tube; 12. baffle; 13. anti-collision plate; 14. first sealing ring; 15. mounting hole; 16. second sealing ring. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] See also Figure 1-6 The utility model provides an embodiment: a bellows-type high-efficiency heat exchanger, including a heat exchanger shell 1, and also including:

[0028] A connecting plate 10 is arranged inside the two ends of the heat exchanger housing 1. Two connecting plates 10 are provided, and the two connecting plates 10 are connected to the heat exchanger housing 1 as a whole. The two connecting plates 10 are provided with mounting holes 15. The heat exchanger housing 1 is provided with corrugated heat exchange tubes 11. There are at least sixteen corrugated heat exchange tubes 11, and the corrugated heat exchange tubes 11 are arranged equidistantly inside the heat exchanger housing 1. Both ends of the corrugated heat exchange tubes 11 extend to the inside of the mounting holes 15, and the corrugated heat exchange tubes 11 are plugged into the connecting plates 10.

[0029] A head cover 3 is arranged on both sides of the heat exchanger shell 1. Two head covers 3 are provided, and the head covers 3 are connected to the heat exchanger shell 1 by screws. A hot fluid inlet 4 and a hot fluid outlet 7 are respectively provided at one end of the two head covers 3, and the hot fluid inlet 4 and the hot fluid outlet 7 are integrated with the head cover 3. A circulating water inlet 8 is provided below one end of the heat exchanger shell 1, and a circulating water outlet 5 is provided above the other end of the heat exchanger shell 1, and the circulating water outlet 5 and the circulating water inlet 8 are connected to the heat exchanger shell 1 as a whole.

[0030] During use: the hot fluid is injected from the hot fluid inlet 4, and the fluids enter into a number of corrugated heat exchange tubes 11 respectively, the hot fluid flows in the corrugated heat exchange tubes 11, and the water enters the interior of the heat exchanger shell 1 from the circulating water inlet 8. The water contacts the corrugated heat exchange tubes 11 filled with hot fluid. After the water and the hot fluid exchange heat through the corrugated heat exchange tubes 11, the temperature of the water is increased, and the heated water flows out from the circulating water outlet 5. The internal flow diameter of the corrugated heat exchange tubes 11 changes continuously, resulting in a continuous change in the flow rate of the hot fluid, forming turbulence, and improving the heat transfer coefficient on the hot fluid side. The hot fluid converges on the other side of the corrugated heat exchange tubes 11 and then flows out through the hot fluid outlet 7.

[0031] See also Figure 1 , Figure 2 and Figure 3A support seat 2 is provided below both ends of the heat exchanger shell 1. Two support seats 2 are provided, and the support seats 2 are fixedly connected to the heat exchanger shell 1. A first sealing ring 14 is provided between the head cover 3 and the heat exchanger shell 1. A second sealing ring 16 is provided inside the mounting hole 15, and the second sealing ring 16 is connected to the connecting plate 10 as a whole. The second sealing ring 16 is provided on the outside of the corrugated heat exchange tube 11, and the second sealing ring 16 is fitted with the corrugated heat exchange tube 11. The first sealing ring 14 ensures the sealing connection between the head cover 3 and the heat exchanger shell 1, and the second sealing ring 16 ensures the sealing connection between the corrugated heat exchange tube 11 and the connecting plate 10.

[0032] See also Figure 2 and Figure 5 A baffle 12 is arranged inside the heat exchanger shell 1. At least four baffles 12 are arranged and fixedly connected to the heat exchanger shell 1. The baffles 12 are arranged in an up-and-down manner inside the heat exchanger shell 1. The corrugated heat exchange tube 11 and the baffles 12 are arranged through each other and the corrugated heat exchange tube 11 and the baffles 12 are fitted together. The water body is turned back and flows outside the corrugated heat exchange tube 11 through the baffles 12, thereby increasing the heat exchange efficiency between the water body and the corrugated heat exchange tube 11.

[0033] See also Figure 2 and Figure 3 An anti-collision plate 13 is arranged inside the heat exchanger shell 1. Two anti-collision plates 13 are arranged and fixedly connected to the heat exchanger shell 1. The two anti-collision plates 13 are respectively arranged below the circulating water outlet 5 and above the circulating water inlet 8. The anti-collision plates 13 prevent the corrugated heat exchange tube 11 from being directly impacted by a large amount of water, which may cause the heat exchange tube to vibrate and deform, thereby protecting the corrugated heat exchange tube 11.

[0034] See also Figure 1 and Figure 2 A high-point exhaust valve 6 is provided above one end of the heat exchanger shell 1, and the high-point exhaust valve 6 is connected to the heat exchanger shell 1 as a whole. The high-point exhaust valve 6 is used to avoid air blockage in the space outside the corrugated heat exchange tube 11, thereby preventing the circulating water from filling the entire space and affecting the heat exchange efficiency. Before starting the high-efficiency heat exchanger, after the circulating water supply is opened, the high-point exhaust valve 6 is opened to discharge the air in the space to ensure that the circulating cooling water can fill the space outside the corrugated heat exchange tube 11 in the entire heat exchanger shell.

[0035] See also Figure 2 A low-point drain valve 9 is provided at the lower end of the heat exchanger shell 1, and the low-point drain valve 9 is connected to the heat exchanger shell 1 as a whole. The low-point drain valve 9 can reduce the accumulation of fine impurities through regular discharge, thereby avoiding the accumulation of fine impurities in the circulating water outside the corrugated heat exchange tube 11.

[0036] Working principle: inject hot fluid from the hot fluid inlet 4, and the fluid enters several corrugated heat exchange tubes 11 respectively. The hot fluid flows in the corrugated heat exchange tubes 11, and the water enters the interior of the heat exchanger shell 1 from the circulating water inlet 8. Open the high point exhaust valve 6 to discharge the air in the space to ensure that the circulating cooling water can fill the space outside the corrugated heat exchange tubes 11 in the entire heat exchanger shell. The water contacts the corrugated heat exchange tubes 11 filled with hot fluid. After the water and the hot fluid exchange heat through the corrugated heat exchange tubes 11, the temperature of the water is increased, and the heated water flows out from the circulating water outlet 5. The baffle 12 makes the water flow back outside the corrugated heat exchange tube 11. The internal flow diameter of the corrugated heat exchange tube 11 changes continuously, resulting in a continuous change in the flow rate of the hot fluid, forming turbulence, and improving the heat transfer coefficient on the hot fluid side. The hot fluid converges on the other side of the corrugated heat exchange tube 11 and then flows out through the hot fluid outlet 7; open the low point shower valve 9 to discharge regularly to reduce the accumulation of fine impurities.

[0037] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency heat exchanger of the bellows type, comprising a heat exchanger shell (1), characterized in that: Also includes: A connecting plate (10) is arranged inside the two ends of the heat exchanger shell (1), two connecting plates (10) are provided, and the two connecting plates (10) are connected to the heat exchanger shell (1) as a whole, and the two connecting plates (10) are provided with a mounting hole (15), and the heat exchanger shell (1) is provided with a corrugated heat exchange tube (11), and at least sixteen corrugated heat exchange tubes (11) are provided, and the corrugated heat exchange tubes (11) are arranged at equal distances inside the heat exchanger shell (1), and both ends of the corrugated heat exchange tube (11) extend to the inside of the mounting hole (15), and the corrugated heat exchange tube (11) is plugged into the connecting plate (10); A head cover (3) is arranged on both sides of the heat exchanger shell (1), two head covers (3) are provided, and the head covers (3) are connected to the heat exchanger shell (1) by screws, one end of the two head covers (3) is respectively provided with a hot fluid inlet (4) and a hot fluid outlet (7), and the hot fluid inlet (4) and the hot fluid outlet (7) are integrated with the head cover (3), a circulating water inlet (8) is provided below one end of the heat exchanger shell (1), and a circulating water outlet (5) is provided above the other end of the heat exchanger shell (1), and the circulating water outlet (5) and the circulating water inlet (8) are connected to the heat exchanger shell (1) as a whole.

2. The high-efficiency heat exchanger of the bellows type according to claim 1, characterized in that: Support seats (2) are provided below both ends of the heat exchanger shell (1), two support seats (2) are provided, and the support seats (2) are fixedly connected to the heat exchanger shell (1), a first sealing ring (14) is provided between the head cover (3) and the heat exchanger shell (1), a second sealing ring (16) is provided inside the mounting hole (15), and the second sealing ring (16) is connected to the connecting plate (10) as a whole, and the second sealing ring (16) is provided outside the corrugated heat exchange tube (11), and the second sealing ring (16) is in contact with the corrugated heat exchange tube (11).

3. The high-efficiency heat exchanger of the bellows type according to claim 1, characterized in that: A baffle (12) is arranged inside the heat exchanger shell (1), at least four baffles (12) are arranged, and the baffles (12) are fixedly connected to the heat exchanger shell (1), the baffles (12) are arranged in an up-and-down manner inside the heat exchanger shell (1), the corrugated heat exchange tube (11) and the baffles (12) are arranged to penetrate, and the corrugated heat exchange tube (11) and the baffles (12) are in contact with each other.

4. The high-efficiency heat exchanger of the bellows type according to claim 1, characterized in that: An anti-collision plate (13) is arranged inside the heat exchanger shell (1), two anti-collision plates (13) are arranged, and the anti-collision plates (13) are fixedly connected to the heat exchanger shell (1), and the two anti-collision plates (13) are respectively arranged below the circulating water outlet (5) and above the circulating water inlet (8).

5. The high-efficiency heat exchanger of the bellows type according to claim 1, characterized in that: A high-point exhaust valve (6) is provided above one end of the heat exchanger shell (1), and the high-point exhaust valve (6) is connected to the heat exchanger shell (1) as a whole.

6. The high-efficiency heat exchanger of the bellows type according to claim 1, characterized in that: A low-point shower valve (9) is provided at the lower end of the heat exchanger shell (1), and the low-point shower valve (9) is connected to the heat exchanger shell (1) as a whole.

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