Horizontal shell and tube heat exchanger

Abstract

The utility model provides a horizontal shell and tube heat exchanger which comprises a shell, a plurality of heat exchange tubes, baffle plates and connecting rods, the heat exchange tubes, the baffle plates and the connecting rods are arranged in the shell, and the shell is provided with a first medium inlet tube and a first medium outlet tube which are communicated into the shell; the multiple heat exchange pipes are fixed to the shell through the baffle plates, and at least parts of the two ends of each heat exchange pipe extend out of the shell. The baffle plate comprises a connecting end and a notch end, the connecting end abuts against the inner wall of the shell, and a gap for a first medium to flow is formed between the notch end and the inner wall of the shell; a first through hole penetrating through the baffle plate in the thickness direction of the baffle plate is formed in the baffle plate, and the baffle plate is arranged on the outer side of the connecting rod in a sleeving mode through the first through hole and can move in the axial direction of the connecting rod. According to the heat exchanger, through the movable arrangement of the baffle plates, the distance between the baffle plates can be adjusted, and the overall heat exchange efficiency of the heat exchanger is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger equipment technical field, concretely relates to a horizontal shell and tube heat exchanger. BACKGROUND

[0002] The tube shell heat exchanger, or the shell and tube heat exchanger, is the wall surface of the tube bundle enclosed in the shell as the heat transfer surface of the partition wall type heat exchanger.

[0003] In the prior art, the shell of the tube shell heat exchanger will be provided with a baffle (also called a flow baffle), and the baffle can guide the flow direction of the medium, so that the two media can be fully heat exchanged. For example, a shell and tube heat exchanger and a liquid equalizing method disclosed in Chinese patent CN117450694A, which specifically discloses "a plurality of baffles are arranged on the inner wall of the cylinder, one end of each baffle is mounted on the inner wall of the cylinder, the other end of the baffle is freely arranged, and a channel for the flow of the cold carrier is formed between the baffle and the inner wall of the cylinder. When used, two adjacent baffles: one end of one baffle is mounted on one side of the inner wall of the cylinder, and the other end of the other baffle is mounted on the other side of the inner wall of the cylinder, so that the position of the channel is staggered up and down, effectively extending the path of the cold carrier and widening the path of the cold carrier. The above structure realizes the guiding of the medium flow, but it can be known that the baffle of this connection mode is fixed with the cylinder, and the position of the baffle cannot be changed. Therefore, the distance between the baffles needs to be designed according to the length of the cylinder and other conditions at the beginning, and once the installation position is unreasonable, such as the distance between the baffles is too close or too far, the heat exchange effect will be affected.

[0004] Therefore, it is necessary to improve the structure of the shell and tube heat exchanger to solve the defects in the prior art. UTILITY MODEL CONTENTS

[0005] In view of the shortcomings of the prior art, the utility model provides a shell and tube heat exchanger with simple structure and better heat exchange effect.

[0006] To solve the above technical problems, the utility model discloses the technical scheme which is used: a horizontal shell and tube heat exchanger, including the casing and being located in the casing's multiple heat exchange pipes, baffle and connecting rod, be equipped with the first medium inlet pipe and the first medium outlet pipe that communicate to the casing on the casing, multiple The heat exchange pipe is fixed with the casing through the baffle, and the both ends of every heat exchange pipe at least have part and stretch out the casing arrangement, the baffle includes connecting end and notch end, the connecting end with the inner wall of the casing is opposite, and the gap that can supply the first medium flow is formed between the notch end and the inner wall of the casing, the first perforation that is along its thickness direction is opened in the baffle, and the baffle is set on the outside of the connecting rod through the first perforation and can move along the axial direction of the connecting rod.

[0007] Preferably, the connecting rod is a plurality of, and the locking member is arranged on each connecting rod, the locking member is located on both sides of the baffle, the locking member can lock or release the baffle, when the locking member locks the baffle, the baffle is fixed with the connecting rod, and when the locking member releases the baffle, the baffle can move on the connecting rod.

[0008] Preferably, the baffle has a plurality of, and the plurality of baffles are arranged at intervals, and the directions of the notch ends of the adjacent two baffles are opposite.

[0009] Preferably, the baffle is further provided with a second perforation, and the baffle is set on the outside of the heat exchange pipe through the second perforation; the number of the second perforation is greater than the number of the first perforation.

[0010] Preferably, the casing is further provided with a tube sheet, the tube sheet is blocked at both ends of the casing, and a closed heat exchange cavity is formed in the casing; a plurality of through holes are formed in the tube sheet, and the both ends of each heat exchange pipe can pass through the through holes and extend outwardly from the casing; the side of the tube sheet facing the heat exchange cavity is provided with a mounting groove, and the both ends of the connecting rod can be inserted into the mounting groove and fixed with the tube sheet.

[0011] Preferably, the side of the tube sheet away from the heat exchange cavity is connected with an end cover, a sealed confluence cavity is formed between the end cover and the tube sheet, and the heat exchange pipe is connected with the confluence cavity; the end cover is provided with a second medium inlet pipe and a second medium outlet pipe; the second medium inlet pipe and the second medium outlet pipe can be connected with the confluence cavity respectively.

[0012] Preferably, the inlet end of the second medium inlet pipe and the outlet end of the second medium outlet pipe are arranged at the same end of the casing.

[0013] Preferably, a temperature sensor is arranged on the second medium inlet pipe and the second medium outlet pipe respectively, and the temperature sensor extends into the second medium inlet pipe and the second medium outlet pipe.

[0014] Preferably, the heat exchange pipe is a finned copper pipe.

[0015] Preferably, the shell is further provided with a mounting foot, one end of the support frame is connected with the shell, and the other end extends outward relative to the shell; and a mounting hole is formed in the support foot and penetrates through the thickness direction of the support foot.

[0016] The horizontal shell-and-tube heat exchanger provided by the utility model has the following beneficial effects: on the one hand, the movable arrangement of the baffle plates can adjust the spacing between the baffle plates, thereby avoiding the influence of the spacing on the final heat exchange effect and improving the overall heat exchange efficiency of the heat exchanger; on the other hand, the conventional heat exchange copper pipe is replaced by the finned copper pipe, which can not only reduce the overall volume of the heat exchange pipe but also increase the contact area between the two different media, thereby further improving the heat exchange effect. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings. In the drawings similar reference numerals denote similar elements throughout the several views, and the drawings are not necessarily drawn to scale. The intention is to illustrate the principle of the present application.

[0018] Figure 1 Fig. 1 is a schematic view of the overall structure of the heat exchanger in the utility model;

[0019] Figure 2 Fig. 2 is an exploded view of the heat exchanger in the utility model;

[0020] Figure 3 Fig. 3 is a sectional view of the heat exchanger in the utility model;

[0021] Figure 4 Fig. 4 is a schematic view of the connection structure of the tube plate, the heat exchange pipe and the baffle plate in the utility model;

[0022] Figure 5 Fig. 5 is a schematic view of the connection structure of the tube plate, the connecting rod and the baffle plate in the utility model;

[0023] Figure 6 Fig. 6 is a schematic view of the first perspective structure of the baffle plate in the utility model;

[0024] Figure 7 Fig. 7 is a schematic view of the first perspective structure of the tube plate in the utility model;

[0025] In the figure: shell 1, heat exchange cavity 10, first medium inlet pipe 11, first medium outlet pipe 12, tube plate 13, through hole 130, mounting groove 131, end cover 14, second medium inlet pipe 140, second medium outlet pipe 141, confluence cavity 142, temperature sensor 15, supporting leg 16, heat exchange pipe 2, baffle 3, connecting end 30, notched end 31, first perforation 32, second perforation 33, connecting rod 4, locking piece 40. DETAILED DESCRIPTION

[0026] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings.

[0027] It should be noted that when an element is considered to be "connected" to another element, it can be directly connected to the other element and integrated as a whole, or there can be a middle element. The terms "mounting", "one end", "the other end" and the like used herein are only for the purpose of illustration.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this technology belongs. The terms used in the specification herein are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0029] Reference Figures 1-7 The present application provides a horizontal shell and tube heat exchanger, comprising a shell 1, and a plurality of heat exchange pipes 2, baffles 3 and connecting rods 4 arranged in the shell 1, the shell 1 is provided with a first medium inlet pipe 11 and a first medium outlet pipe 12 which communicate into the shell 1; the first medium inlet pipe 11 and the first medium outlet pipe 12 are mainly used for the flow of the first medium (such as coolant / heat medium) in the shell 1; the plurality of heat exchange pipes 2 are fixed with the shell 1 through the baffles 3, and at least part of both ends of each heat exchange pipe 2 extends out of the shell 1. In use, the first medium is input into the shell 1 through the first medium inlet pipe 11, and at the same time, the second medium (such as hot water / cold water) is input into the heat exchange pipe 2, based on the second law of thermodynamics: heat always spontaneously transfers from a high-temperature object to a low-temperature object. Therefore, when the high-temperature fluid flows through the heat exchange pipe 2, and the low-temperature fluid flows in the shell 1, heat is transferred from the high-temperature side to the low-temperature side, thereby realizing the transfer and utilization of heat.

[0030] Reference Figure 5 And 6 Further, the baffle 3 comprises a connecting end 30 and a notched end 31, the connecting end 30 abuts against the inner wall of the shell 1, and the notched end 31 has a gap between the inner wall of the shell 1 for the flow of the first medium; referring to Figure 6The connecting end 30 refers to one end of the arc-shaped outer edge of the baffle 3, which abuts against the inner wall of the shell 1. The notch end 31 refers to the end opposite to the arc-shaped outer edge. The connecting end 30 and the notch end 31 are oppositely arranged. The gap between the notch end 31 and the inner wall of the shell 1 allows the first medium (coolant / heat medium) to flow in the shell 1. The baffle 3 is provided with a first perforation 32 penetrating along the thickness direction of the baffle 3. The baffle 3 is sleeved on the outer side of the connecting rod 4 through the first perforation 32 and can move along the axial direction of the connecting rod 4. By adjusting the spacing of the baffle 3 on the connecting rod 4, the heat exchange effect of the heat exchanger can be better controlled.

[0031] In the prior art, the position of the baffle is usually fixed, which leads to the unadjustable distance between the baffles 3. If the distance between the baffles 3 is too small, the resistance of the medium in the flow process will increase, which leads to the insufficient heat exchange. If the distance between the baffles 3 is too large, the time of the medium staying in the shell will be reduced, which also leads to the insufficient heat exchange. In the embodiment, the baffle 3 is fixed on the shell 1 through the connecting rod 4. Although one end of the baffle 3 abuts against the shell 1, the baffle 3 is not completely fixed. The position of the baffle 3 on the connecting rod 4 can be adjusted, so as to adjust the spacing and improve the heat transfer coefficient between the two media in the shell 1 and the overall heat exchange efficiency of the heat exchanger.

[0032] Reference Figure 5 In the preferred embodiment, the connecting rod 4 is provided with a locking member 40 (such as a nut) on each connecting rod 4. The locking member 40 is located on the two sides of the baffle 3. The locking member 40 can lock or release the baffle 3. When the locking member 40 locks the baffle 3, the baffle 3 is fixed on the connecting rod 4. When the locking member 40 is in the locked state, the locking members 40 on the two sides of the baffle 3 form a clamping state to the baffle 3, so that the baffle 3 is fixed on the connecting rod 4 and is not easy to displace in the medium flow state. When the locking member 40 releases the baffle 3, the baffle 3 can move on the connecting rod 4. At this time, the spacing of the baffle 3 can be adjusted.

[0033] Reference Figures 2-5 In the preferred embodiment, the baffle 3 is provided with a plurality of baffles 3. The plurality of baffles 3 are arranged at intervals. The directions of the notch ends 31 of the adjacent two baffles 3 are opposite. When the first medium flows in the shell 1, the first medium is affected by the direction of the notch end 31 and flows in an S-shaped manner. Therefore, the flow speed of the first medium in the shell 1 is relatively slow. The medium and the medium can achieve sufficient heat exchange effect, which is beneficial to improve the heat exchange effect.

[0034] Reference Figures 4-6In the preferred embodiment, the baffle plate 3 is further provided with a second perforation 33, and the baffle plate 3 is sleeved on the outer side of the heat exchange pipe 2 through the second perforation 33; the number of the second perforation 33 is greater than the number of the first perforation 32; that is, the number of the heat exchange pipe 2 that can be installed on the same baffle plate 3 is greater than the number of the connecting rod 4, so as to ensure the heat exchange effect; and each heat exchange pipe 2 is spaced from each other, and the heat exchange pipe 2 and the connecting rod 4 are also spaced from each other, so that the medium can flow into the space when flowing in the shell 1, so as to completely realize the wrapping of the heat exchange pipe 2 in the flowing process, and better heat exchange can be achieved.

[0035] Reference Figure 3 and 7 In the preferred embodiment, the shell 1 is further provided with a tube plate 13, the tube plate 13 is blocked at both ends of the shell 1, and a closed heat exchange cavity 10 is formed in the shell 1, and the first medium inlet pipe 11 and the first medium outlet pipe 12 are respectively communicated with the heat exchange cavity 10; a plurality of through holes 130 are formed in the tube plate 13, and the two ends of each heat exchange pipe 2 can respectively pass through the through holes 130 and extend outwardly from the shell 1; the side of the tube plate 13 facing the heat exchange cavity 10 is provided with a mounting groove 131, and the two ends of the connecting rod 4 can be respectively inserted into the mounting groove 131 and fixed with the tube plate 13. In this embodiment, after the connecting rod 4 is inserted into the mounting groove 131 and fixed with the tube plate 13, it can be further fixed by welding. At the same time, the tube plate 13 and the shell 1 can also be fixed by welding sealing or the like.

[0036] Reference Figure 3 In the preferred embodiment, the side of the tube plate 13 away from the heat exchange cavity 10 is connected with an end cover 14, and a sealed flow collecting cavity 142 is formed between the end cover 14 and the tube plate 13. Similarly, the end cover 14 and the tube plate 13 can also be fixed by welding sealing. The heat exchange pipe 2 is communicated with the flow collecting cavity 142, that is, the part of the heat exchange pipe 2 extending out of the shell 1 can be communicated with the flow collecting cavity 142. The end cover 14 is provided with a second medium inlet pipe 140 and a second medium outlet pipe 141; the second medium inlet pipe 140 and the second medium outlet pipe 141 can be respectively communicated with the flow collecting cavity 142. That is, the flow collecting cavities 142 are located at both ends of the shell 1, one of the flow collecting cavities 142 is communicated with the second medium inlet pipe 140 as the inlet of the second medium, and the other flow collecting cavity 142 is communicated with the second medium outlet pipe 141 as the outlet of the second medium.

[0037] Reference Figures 1-3 In the preferred embodiment, the inlet end of the second medium inlet pipe 140 and the outlet end of the second medium outlet pipe 141 are spaced apart at the same end of the shell 1. For example, Figure 3As shown, the second medium inlet pipe 140 is connected to the end cover 14 at one end and extends towards the second medium outlet pipe 141 at the other end, so that the inlet end and the outlet end are located at the same end of the shell 1, which is convenient for the user to connect the interface at the same position during installation.

[0038] Reference Figures 2-3 In the preferred embodiment, the second medium inlet pipe 140 and the second medium outlet pipe 141 are respectively provided with a temperature sensor 15, and the temperature sensor 15 extends into the pipe of the second medium inlet pipe 140 and the second medium outlet pipe 141 at least partially. In this embodiment, the temperature sensor 15 is arranged near the inlet end of the second medium inlet pipe 140 and the outlet end of the second medium outlet pipe 141, and the temperature of the inlet end and the outlet end is detected respectively, which can be used for judgment.

[0039] In the preferred embodiment, the heat exchange pipe 2 is a finned copper pipe. Compared with the conventional light pipe copper pipe, the finned copper pipe can increase the heat exchange area and reduce the volume of the heat exchange pipe 2 while achieving the same heat exchange effect.

[0040] Reference Figures 1-3 In the preferred embodiment, the shell 1 is also provided with a support leg 16, which is mainly used for mounting and fixing the heat exchanger. One end of the support leg 16 is connected to the shell 1, and the other end extends outward relative to the shell 1. The support leg 16 is provided with a mounting hole penetrating along the thickness direction thereof, and during installation, screws or other fasteners can be driven into the mounting hole to achieve the mounting and fixing of the heat exchanger body, which is also convenient for disassembly.

[0041] Although the embodiments of the present application have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above-mentioned embodiments within the scope of the present application.

Claims

1. A horizontal shell-and-tube heat exchanger, characterized by: The application relates to a heat exchange device, which comprises a shell, a plurality of heat exchange pipes, a baffle plate and a connecting rod arranged in the shell, a first medium inlet pipe and a first medium outlet pipe are arranged on the shell and communicated with the shell, the heat exchange pipes are fixed to the shell through the baffle plate, and at least part of the two ends of each heat exchange pipe extends out of the shell, the baffle plate comprises a connecting end and a notch end, the connecting end abuts against the inner wall of the shell, and a gap for the flow of a first medium is formed between the notch end and the inner wall of the shell, a first perforation is formed in the baffle plate and penetrates the thickness direction of the baffle plate, the baffle plate is sleeved on the outer side of the connecting rod through the first perforation, and the baffle plate can move along the axial direction of the connecting rod.

2. The horizontal shell-and-tube heat exchanger of claim 1, wherein The connecting rod is provided with a locking member, the locking member is arranged on the two sides of the baffle plate, the locking member can lock or release the baffle plate, the baffle plate is fixed to the connecting rod when the locking member locks the baffle plate, and the baffle plate can move on the connecting rod when the locking member releases the baffle plate.

3. The horizontal shell-and-tube heat exchanger of claim 1, wherein The baffle plate is provided with a plurality of baffle plates, the baffle plates are arranged at intervals, and the notch ends of the two adjacent baffle plates are oppositely directed.

4. The horizontal shell-and-tube heat exchanger of claim 1, wherein The baffle plate is further provided with a second perforation, the baffle plate is sleeved on the outer side of the heat exchange pipe through the second perforation, and the number of the second perforations is greater than that of the first perforations.

5. The horizontal shell-and-tube heat exchanger of claim 1, wherein, The shell is further provided with a tube plate, the tube plate is sealed at the two ends of the shell and forms a closed heat exchange cavity in the shell, a plurality of through holes are formed in the tube plate, the two ends of each heat exchange pipe can respectively pass through the through holes and extend out of the shell, and the tube plate is provided with a mounting groove on the side facing the heat exchange cavity, and the two ends of the connecting rod can be respectively inserted into the mounting groove and fixed to the tube plate.

6. The horizontal shell-and-tube heat exchanger of claim 5, wherein The side of the tube plate away from the heat exchange cavity is connected with an end cover, a sealed converging cavity is formed between the end cover and the tube plate, the heat exchange pipe is communicated with the converging cavity, the end cover is provided with a second medium inlet pipe and a second medium outlet pipe, and the second medium inlet pipe and the second medium outlet pipe are respectively communicated with the converging cavity.

7. The horizontal shell-and-tube heat exchanger of claim 6, wherein The inlet end of the second medium inlet pipe and the outlet end of the second medium outlet pipe are arranged at intervals on the same end of the shell.

8. The horizontal shell-and-tube heat exchanger of claim 6, wherein Temperature sensors are arranged on the second medium inlet pipe and the second medium outlet pipe, and at least part of the temperature sensors extends into the second medium inlet pipe and the second medium outlet pipe.

9. The horizontal shell-and-tube heat exchanger of claim 1, wherein, The heat exchange pipe is a finned copper pipe.

10. The horizontal shell-and-tube heat exchanger of claim 1, wherein The shell is further provided with a supporting leg, one end of the supporting leg is connected with the shell, and the other end of the supporting leg extends outwards relative to the shell, and a mounting hole is formed in the supporting leg and penetrates the thickness direction of the supporting leg.

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