A heat exchanger with high heat exchange efficiency

Abstract

The present invention discloses a heat exchanger with high heat exchange efficiency, belonging to the technical field of liquid cooling, heating or vaporization equipment, comprising a tube shell and a heat exchange tube, the two ends of the tube shell are connected with an upper tube plate and a lower tube plate, the heat exchange tubes are arranged in parallel between the upper tube plate and the lower tube plate, the upper tube plate is connected with a tube box, a liquid diverter and a orifice plate distributor are arranged in the tube box from top to bottom, a distance is maintained between the liquid diverter and the tube box, and a liquid temporary storage cavity is formed, a diversion notch is provided on the top of the liquid diverter to divert the liquid in the liquid temporary storage cavity to the orifice plate distributor, and the liquid flowing into the orifice plate distributor flows to the upper tube plate, an overflow notch is provided at the end of the heat exchange tube, and the liquid in the upper tube plate flows into the heat exchange tube from the overflow notch. Through the overflow method, the liquid flows evenly on the tube wall of the heat exchange tube, the contact area with the heat exchange fluid is increased, so that the heat exchange fluid is evenly heated or cooled, the heat exchange efficiency is improved and the energy consumption is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of liquid cooling, heating or vaporizing equipment, and in particular to a heat exchanger with high heat exchange efficiency. Background Art

[0002] Heat exchangers are devices that transfer part of the heat of hot fluid to cold fluid, also known as heat exchangers. Heat exchangers play an important role in chemical, petroleum, power, food and many other industrial production. When used, the heat exchange effect and efficiency of the heat exchanger will directly affect the production capacity and energy consumption of production and processing.

[0003] However, in the existing heat exchanger, refrigerant or heat medium is poured into the heat exchange tube, and the refrigerant or heat medium flows in the center of the heat exchange tube. When the fluid that needs to exchange heat is passed in, heat is exchanged with the outer surface of the heat exchange tube. Since the fluidity of the refrigerant or heat medium on the tube wall is low, the heat exchange efficiency is low and the energy consumption is high. Summary of the invention

[0004] In order to overcome the defects of the prior art, the present invention provides a heat exchanger with high heat exchange efficiency, which makes the refrigerant or heat medium flow evenly on the tube wall of the heat exchange tube through overflow, thereby increasing the contact area with the heat exchange fluid, so that the heat exchange fluid is evenly heated or cooled, thereby improving the heat exchange efficiency and reducing energy consumption.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a heat exchanger with high heat exchange efficiency, including a tube shell and heat exchange tubes, characterized in that: both ends of the tube shell are connected with an upper tube plate and a lower tube plate, the heat exchange tubes are arranged in parallel between the upper tube plate and the lower tube plate, the upper tube plate is connected with a tube box, the inner cavity of the tube box is provided with a liquid diverter and a orifice plate distributor from top to bottom, the orifice plate distributor is respectively connected with the liquid diverter and the upper tube plate, a spacing is maintained between the liquid diverter and the tube box, and a liquid temporary storage cavity is formed, a diversion notch is provided on the top of the liquid diverter to divert the liquid in the liquid temporary storage cavity to the orifice plate distributor, and the liquid flowing into the orifice plate distributor flows to the upper tube plate, one end of the heat exchange tube connected to the upper tube plate protrudes from the upper tube plate, and an overflow notch is provided at its end, and the liquid in the upper tube plate flows into the heat exchange tube evenly from the overflow notch by overflow, thereby cooling or heating the fluid passing into the tube shell.

[0006] Preferably, both ends of the heat exchange tube are connected at the upper tube sheet and the lower tube sheet, the end connected to the upper tube sheet protrudes from the upper tube sheet, and the end connected to the lower tube sheet is fixed in the lower tube sheet, thereby achieving stable installation of the heat exchange tube.

[0007] Preferably, the tube box is provided with a feed port for introducing liquid into the liquid temporary storage cavity, and a lower cone is connected to the end of the lower tube plate away from the tube shell, the lower cone is connected to the heat exchange tube, and a discharge port is provided. The liquid enters from the feed port, passes through the liquid diverter, the orifice plate distributor, the upper tube plate and the heat exchange tube in sequence, and flows out from the discharge port.

[0008] Preferably, the liquid diverter is cylindrical and coaxial with the tube shell. The diverter notches at the top of the liquid diverter are evenly distributed around the circumference of the liquid diverter, and the diverter notches are toothed V-shaped notches with an angle of 60 degrees. The liquid diverter and the diverter notches are opened so that the liquid entering the liquid temporary storage cavity flows from the diverter notches into the wall of the liquid diverter, avoiding the direct injection of liquid into the tube box in the prior art, reducing energy consumption. At the same time, since the liquid diverter is cylindrical and the diverter notches are evenly distributed, the liquid can flow evenly into the liquid diverter, and then flow from the liquid diverter to the orifice distributor, the upper tube plate and the heat exchange tube, ensuring that the liquid flowing on the wall of the heat exchange tube is evenly distributed, and ensuring its heat exchange effect.

[0009] Preferably, the orifice plate distributor is provided with flow diversion hole groups corresponding to the heat exchange tubes, and each flow diversion hole group is composed of 6 flow diversion holes evenly distributed around the center line of the heat exchange tube. The 6 flow diversion holes are distributed in a regular hexagonal shape directly above the heat exchange tube, so that the liquid flows evenly into the upper tube plate.

[0010] Preferably, there are four overflow notches, which are evenly distributed around the cylinder of the heat exchange tube, and the overflow notches are V-shaped notches with an angle of 90 degrees.

[0011] Furthermore, the vertices of the angles of the overflow notches are located on the same horizontal plane, the distances between the vertices of the angles and the upper tube sheet are consistent, and the opening directions of the overflow notches are consistent. This ensures that the overflow notches are designed in a consistent manner, thereby ensuring that the heat exchange tubes can all perform heat exchange functions, greatly improving heat exchange efficiency and reducing energy consumption.

[0012] Preferably, the tube shell is provided with fluid inlet and outlet pipe ports on one side close to the upper tube plate and the lower tube plate, and baffles are provided at the connection between the inlet and outlet pipe ports and the tube shell to prevent the heat exchange fluid from directly flushing to the heat exchange tube after entering the tube shell, causing the heat exchange tube to be locally overcooled or overheated, thereby affecting the heat exchange effect.

[0013] Preferably, a plurality of distance rods are arranged in the tube shell, the distance rods are parallel to the heat exchange tubes, a plurality of baffles are arranged on the distance rods and the heat exchange tubes, and every two adjacent baffles are staggered and vertically installed on the heat exchange tubes. Every two adjacent staggered baffles make the heat exchange fluid flow in a spiral around the heat exchange tubes, constantly changing the flow direction, greatly enhancing the disturbance, and thus enhancing the heat exchange effect.

[0014] Preferably, a quick-opening upper cover is provided at the top of the pipe box, and the quick-opening upper cover is hinged to the pipe box. The quick-opening upper cover is designed to facilitate quick maintenance and cleaning of debris remaining in the pipe box.

[0015] The beneficial effects of the present invention are: through overflow, the liquid flows evenly on the tube wall of the heat exchange tube, increasing the contact area with the heat exchange fluid, so that the heat exchange fluid is evenly heated or cooled, thereby improving heat exchange efficiency and reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the present invention;

[0017] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0018] Figure 3 It is a cross-sectional view of the connection between the upper tube plate and the heat exchange tube in an embodiment of the present invention;

[0019] Figure 4 Schematic diagram of the distribution of diverter holes on the heat exchange tube in an embodiment of the present invention.

[0020] In the figure, 1, tube shell, 2, heat exchange tube, 3, upper tube plate, 4, lower tube plate, 5, tube box, 6, liquid diverter, 7, orifice distributor, 8, liquid temporary storage chamber, 9, diverter notch, 10, overflow notch, 11, feed port, 12, lower cone, 13, discharge port, 14, diverter hole, 15, inlet and outlet pipe ports, 16, baffle, 17, distance rod, 18, baffle, 19, quick-opening upper cover. DETAILED DESCRIPTION

[0021] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0022] As attached Figure 1-4As shown, the present invention provides a heat exchanger with high heat exchange efficiency, including a tube shell 1 and a heat exchange tube 2, the two ends of the tube shell 1 are connected to an upper tube plate 3 and a lower tube plate 4, the heat exchange tubes 2 are arranged in parallel between the upper tube plate 3 and the lower tube plate 4, the upper tube plate 3 is connected to a tube box 5, the inner cavity of the tube box 5 is provided with a liquid diverter 6 and a perforated plate distributor 7 from top to bottom, the perforated plate distributor 7 is respectively connected to the liquid diverter 6 and the upper tube plate 3, a distance is maintained between the liquid diverter 6 and the tube box 5, and a A liquid temporary storage chamber 8 is provided at the top of the liquid diverter 6 with a diversion notch 9 for diverting the liquid in the liquid temporary storage chamber 8 to the orifice plate distributor 7. The liquid flowing into the orifice plate distributor 7 flows to the upper tube sheet 3. One end of the heat exchange tube 2 connected to the upper tube sheet 3 protrudes from the upper tube sheet 3, and an overflow notch 10 is provided at the end thereof. The liquid in the upper tube sheet 3 flows evenly into the heat exchange tube 2 from the overflow notch 10 by overflow, thereby cooling or heating the fluid passing into the tube shell 1.

[0023] By overflowing, the liquid flows evenly on the tube wall of the heat exchange tube 2, increasing the contact area with the heat exchange fluid, so that the heat exchange fluid is evenly heated or cooled, thereby improving heat exchange efficiency and reducing energy consumption.

[0024] As a preferred embodiment, both ends of the heat exchange tube 2 are connected at the upper tube sheet 3 and the lower tube sheet 4, the end connected to the upper tube sheet 3 protrudes from the upper tube sheet 3, and the end connected to the lower tube sheet 4 is fixed in the lower tube sheet 4, thereby achieving stable installation of the heat exchange tube 2.

[0025] As a preferred embodiment, the tube box 5 is provided with a feed port 11 for introducing liquid into the liquid temporary storage chamber 8, and the end of the lower tube plate 4 away from the tube shell 1 is connected to a lower cone 12, the lower cone 12 is connected to the heat exchange tube 2, and is provided with a discharge port 13. The liquid enters from the feed port 11, passes through the liquid diverter 6, the orifice plate distributor 7, the upper tube plate 3 and the heat exchange tube 2 in sequence, and flows out from the discharge port 13.

[0026] As a preferred embodiment, the liquid diverter 6 is cylindrical and coaxial with the tube shell 1. The diverter notches 9 provided at the top of the liquid diverter 6 are evenly distributed around the circumference of the liquid diverter 6, and the diverter notches 9 are toothed V-shaped notches with an angle of 60 degrees. Through the provided liquid diverter 6 and the diverter notches 9, the liquid entering the liquid temporary storage chamber 8 flows from the diverter notches 9 into the wall of the liquid diverter 6, avoiding the prior art of directly injecting liquid into the tube box 5, reducing energy consumption. At the same time, since the liquid diverter 6 is cylindrical and the diverter notches 9 are evenly distributed, the liquid can evenly flow into the liquid diverter 6, and then flow from the liquid diverter 6 to the orifice distributor 7, the upper tube sheet 3 and the heat exchange tube 2, ensuring that the liquid flowing on the tube wall of the heat exchange tube 2 is evenly distributed, thereby ensuring its heat exchange effect.

[0027] As a preferred embodiment, the orifice plate distributor 7 is provided with flow diversion hole groups corresponding to the heat exchange tubes 2, and each flow diversion hole group is composed of 6 flow diversion holes evenly distributed around the center line of the heat exchange tube 2. The 6 flow diversion holes 14 are distributed in a regular hexagonal shape directly above the heat exchange tube 2, so that the liquid flows evenly into the upper tube plate 3.

[0028] As a preferred embodiment, four overflow notches 10 are provided and are evenly distributed around the cylinder of the heat exchange tube 2 , and the overflow notches 10 are V-shaped notches with an angle of 90 degrees.

[0029] Furthermore, the vertices of the angles of the overflow notches 10 are located on the same horizontal plane, the distances between the vertices of the angles and the upper tube sheet 3 are consistent, and the opening directions of the overflow notches 10 are consistent. The overflow notches 10 are ensured to be designed in a consistent manner, thereby ensuring that the heat exchange tubes 2 can all play a heat exchange role, greatly improving the heat exchange efficiency and reducing energy consumption.

[0030] As a preferred embodiment, the tube shell 1 is provided with fluid inlet and outlet pipe ports 15 on one side close to the upper tube plate 3 and the lower tube plate 4, respectively, and baffles 16 are provided at the connection between the inlet and outlet pipe ports 15 and the tube shell 1 to prevent the heat exchange fluid from directly flushing to the heat exchange tube 2 after entering the tube shell 1, causing the heat exchange tube 2 to be partially overcooled or overheated, thereby affecting the heat exchange effect.

[0031] As a preferred embodiment, a plurality of distance rods 17 are provided in the tube shell 1, the distance rods 17 are parallel to the heat exchange tubes 2, a plurality of baffles 18 are provided on the distance rods 17 and the heat exchange tubes 2, and every two adjacent baffles 18 are staggered and vertically installed on the heat exchange tubes 2. Every two adjacent baffles 18 are staggered, so that the heat exchange fluid introduced flows in a spiral around the heat exchange tubes 2, constantly changing the flow direction, greatly enhancing the disturbance, and thus enhancing the heat exchange effect.

[0032] As a preferred embodiment, a quick-opening upper cover 19 is provided at the top of the pipe box 5, and the quick-opening upper cover 19 is hinged to the pipe box 5. The quick-opening upper cover 19 is designed to facilitate quick maintenance and cleaning of debris remaining in the pipe box 5.

[0033] In use, when the heat exchanger is working, the refrigerant or heat medium enters the liquid temporary storage chamber 8 from the feed port 11, flows evenly into the liquid diverter 6 through the diverter notch 9, the liquid flowing into the liquid diverter 6 flows into the orifice plate distributor 7, flows evenly into the upper tube plate 3 through the diverter hole 14 on the orifice plate distributor 7, and the liquid in the upper tube plate 3 flows evenly into the heat exchange tube 2 through the overflow notch 10 by overflow, flows along the tube wall of the heat exchange tube 2, and finally flows out from the discharge port 13. Under the action of the heat exchange tube 2, the baffle 18 and the refrigerant or heat medium, the heat exchange fluid with a different temperature from the liquid entering from the feed port 11 enters from the inlet and outlet pipe port 15 on one side of the tube shell 1, and heat exchange occurs on the outer surface of the heat exchange tube 2 in the tube shell 1, thereby cooling or heating the heat exchange fluid, and the cooled or heated heat exchange fluid flows out from the inlet and outlet pipe port 15 on the other side of the tube shell 1.

[0034] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions and variations of these embodiments are made without departing from the principles and spirit of the present invention, and still fall within the scope of protection of the present invention.

Claims

1. A heat exchanger with high heat exchange efficiency, comprising a tube shell (1) and a heat exchange tube (2), characterized in that: The two ends of the tube shell (1) are connected to an upper tube sheet (3) and a lower tube sheet (4); the heat exchange tubes (2) are arranged in parallel between the upper tube sheet (3) and the lower tube sheet (4); the upper tube sheet (3) is connected to a tube box (5); the inner cavity of the tube box (5) is provided with a liquid diverter (6) and a perforated plate distributor (7) from top to bottom; the perforated plate distributor (7) is respectively connected to the liquid diverter (6) and the upper tube sheet (3); a distance is maintained between the liquid diverter (6) and the tube box (5), and a liquid temporary storage cavity (8) is formed; the liquid A flow splitter (9) is provided at the top of the body flow splitter (6) to split the liquid in the liquid temporary storage chamber (8) to the orifice plate distributor (7). The liquid flowing into the orifice plate distributor (7) flows to the upper tube plate (3). One end of the heat exchange tube (2) connected to the upper tube plate (3) protrudes from the upper tube plate (3), and an overflow notch (10) is provided at the end thereof. The liquid in the upper tube plate (3) flows uniformly from the overflow notch (10) into the heat exchange tube (2) by overflow, thereby cooling or heating the fluid passing into the tube shell (1). The tube box (5) is provided with a feed port (11) for introducing liquid into the liquid temporary storage chamber (8); the lower tube plate (4) is connected to a lower cone (12) at one end away from the tube shell (1); the lower cone (12) is connected to the heat exchange tube (2) and is provided with a discharge port (13); the liquid enters through the feed port (11), passes through the liquid splitter (6), the orifice plate distributor (7), the upper tube plate (3) and the heat exchange tube (2) in sequence, and flows out from the discharge port (13); The liquid diverter (6) is cylindrical and coaxial with the tube shell (1). The diverter notches (9) provided at the top of the liquid diverter (6) are evenly distributed around the circumference of the liquid diverter (6). The diverter notches (9) are tooth-shaped V-shaped notches with an angle of 60 degrees. The overflow notches (10) are provided in four numbers and are evenly distributed around the cylinder of the heat exchange tube (2); the overflow notches (10) are V-shaped notches with an included angle of 90 degrees; the angle vertices of the overflow notches (10) are located on the same horizontal plane, the distances between the angle vertices and the upper tube plate (3) are consistent, and the opening directions of the overflow notches (10) are consistent; The two ends of the heat exchange tube (2) are connected to an upper tube plate (3) and a lower tube plate (4), the end connected to the upper tube plate (3) protrudes from the upper tube plate (3), and the end connected to the lower tube plate (4) is fixed inside the lower tube plate (4); The orifice plate distributor (7) is provided with flow diversion hole groups corresponding to the heat exchange tubes (2), each flow diversion hole group being composed of six flow diversion holes evenly distributed around the center line of the heat exchange tube (2); The tube shell (1) is provided with fluid inlet and outlet pipe openings (15) on one side close to the upper tube plate (3) and the lower tube plate (4), respectively, and baffles (16) are provided at the connection between the inlet and outlet pipe openings (15) and the tube shell (1); A plurality of distance rods (17) are arranged in the tube shell (1), the distance rods (17) and the heat exchange tube (2) are parallel to each other, a plurality of baffles (18) are arranged on the distance rods (17) and the heat exchange tube (2), and every two adjacent baffles (18) are staggered and vertically installed on the heat exchange tube (2).

2. A heat exchanger with high heat exchange efficiency according to claim 1, characterized in that: A quick-opening upper cover (19) is provided at the top of the pipe box (5), and the quick-opening upper cover (19) is hinged to the pipe box (5).

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