Graphite heat exchanger

Abstract

The graphite heat exchanger is characterized in that a shell is cylindrical, two ends of the shell are open, a first feeding pipe and a first discharging pipe are arranged on the shell, a heat exchange pipe assembly comprises mounting plates arranged at intervals and a plurality of heat exchange pipes arranged on the mounting plates, two ends of each heat exchange pipe are arranged on the outer sides of the mounting plates, and the first feeding pipe and the second discharging pipe are arranged on the outer sides of the mounting plates. A plurality of heat exchange grooves are formed in the side wall of each heat exchange pipe, the first sealing shell is arranged at one end of the shell and connected with the shell in a sealed mode, a second feeding pipe and a second discharging pipe are arranged on the upper side and the lower side of the first sealing shell respectively, a sealing plate is arranged in the first sealing shell, and one end of the sealing plate is connected with a mounting plate of the sealing plate. The sealing plate divides the inner space of the first sealing shell into a feeding cavity and a discharging cavity, and the second sealing shell is arranged at the other end of the shell. According to the graphite heat exchanger, the heat exchange grooves are formed in the side walls of the heat exchange pipes, the heat exchange area of the heat exchange pipes is increased, the heat exchange efficiency can be improved, meanwhile, the overall size of the graphite heat exchanger is not increased, and the applicability of the graphite heat exchanger is greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger technology, and more specifically, relates to a graphite heat exchanger. Background Technology

[0002] In the production of chemical products such as trichlorotoluene and chlorinated paraffin, the heating or cooling of corrosive materials is often involved. During the heat exchange process, graphite heat exchangers are widely used as key equipment due to their excellent corrosion resistance.

[0003] However, due to the structural limitations of shell-and-tube graphite heat exchangers, their heat exchange efficiency is affected by the length of the heat exchange tubes and the temperature of the heat exchange medium. However, if the temperature difference between the heat exchange medium and the material to be exchanged is too large, it will damage the internal components of the heat exchanger. Therefore, in order to improve the heat exchange efficiency, the length of the heat exchange tubes is often increased, which will increase the volume of the heat exchanger and make installation inconvenient. Utility Model Content

[0004] The purpose of this invention is to provide a graphite heat exchanger to improve heat exchange efficiency.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A graphite heat exchanger is provided, comprising a shell, a heat exchange tube assembly, a first sealing shell, and a second sealing shell. The shell is cylindrical, with openings at both ends. A first feed pipe and a first discharge pipe are provided on the shell. The first feed pipe is located at the top of the shell near the front end, and the first discharge pipe is located at the bottom of the shell near the rear end. The heat exchange tube assembly includes spaced-apart mounting plates and multiple heat exchange tubes mounted on the mounting plates. Both ends of each heat exchange tube are located on the outer side of the mounting plates. Multiple heat exchange grooves are provided on the sidewalls of each heat exchange tube, extending circumferentially along the heat exchange tube. The tubes are evenly arranged circumferentially. The mounting plates are respectively disposed on the inner wall of the shell, and the mounting plates are sealed to the inner wall of the shell. The first sealing shell is disposed at one end of the shell and is sealed to the shell. The upper and lower sides of the first sealing shell are respectively provided with the second feed pipe and the second discharge pipe. The first sealing shell is provided with a sealing plate. One end of the sealing plate is connected to one of the mounting plates. The sealing plate divides the internal space of the first sealing shell into a feed chamber and a discharge chamber. The feed chamber and the discharge chamber are connected to the heat exchange tubes on the corresponding sides. The second sealing shell is disposed at the other end of the shell and is sealed to the shell. The second sealing shell is provided with a rotating cavity, and the rotating cavity is connected to each of the heat exchange tubes.

[0006] In one possible implementation, multiple guide plates are provided between the mounting plates. Each guide plate has interconnected arc-shaped sidewalls and planar sidewalls. The arc-shaped sidewalls of the guide plates are connected to the inner wall of the housing. The planar sidewalls of the guide plates and the inner wall of the housing are spaced apart to form liquid-passing gaps. The liquid-passing gaps are arranged alternately vertically.

[0007] In one possible implementation, each of the heat exchange tubes is arranged to pass through the mounting plate and the guide plate, and the heat exchange tubes are sealed to the mounting plate or the guide plate.

[0008] In one possible implementation, the housing is provided with first flanges at both ends, a second flange is provided on the open end face of the first housing, and a third flange is provided on the open end face of the second housing, one of the first flanges being connected to the second flange, and the other of the first flanges being connected to the third flange.

[0009] In one possible implementation, the first flange has a sealing groove on its connecting end face, the sealing groove being annular, and the second flange has a sealing ring on its connecting end face, the width of the sealing groove being the same as the width of the sealing ring, the sealing ring being inserted into the sealing groove.

[0010] In one possible implementation, a diaphragm is provided in the sealing groove, and the bottom of the sealing groove, the two side walls of the sealing groove, and the diaphragm form a storage cavity. The storage cavity is provided with sealant. When the sealing ring is inserted, the diaphragm ruptures, and the sealant fills the space between the sealing ring and the side walls of the sealing groove.

[0011] In one possible implementation, the end of the sealing ring is provided with a membrane-breaking blade, and the diaphragm is made of a fragile material.

[0012] In one possible implementation, the first flange has a limiting groove on its connecting end face and a plurality of first connecting holes; the second flange has a limiting strip on its connecting end face and a plurality of second connecting holes, wherein the first connecting holes and the second connecting holes correspond one-to-one, and when the limiting strip is inserted into the limiting groove, the first connecting hole and the corresponding second connecting hole are connected.

[0013] In one possible implementation, the outer wall of the first flange is provided with a first thread, the outer wall of the second flange is provided with a second thread, and when the first flange and the second flange are connected, the first thread and the second thread are combined to form a third thread. The inner wall of the seal is provided with a fourth thread, which is adapted to the third thread. The seal is screwed onto the outer walls of the first flange and the second flange.

[0014] In one possible implementation, the second flange has the same structure as the third flange.

[0015] The beneficial effects of the graphite heat exchanger provided by this utility model are as follows: Compared with the prior art, this utility model increases the heat exchange area of ​​the heat exchange tube by setting heat exchange grooves on the side wall of the heat exchange tube, thereby improving the heat exchange efficiency without increasing the overall volume of the graphite heat exchanger, and greatly improving the applicability of the graphite heat exchanger. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 A schematic diagram of the working structure of the graphite heat exchanger provided in this embodiment of the utility model;

[0018] Figure 2 A longitudinal cross-sectional view of a graphite heat exchanger provided in an embodiment of this utility model;

[0019] Figure 3 for Figure 2 Enlarged view of part A;

[0020] Figure 4 A schematic diagram of the shell structure provided for an embodiment of this utility model;

[0021] Figure 5 for Figure 4 Enlarged view of part B;

[0022] Figure 6 A longitudinal cross-sectional view of the housing provided for an embodiment of this utility model;

[0023] Figure 7 for Figure 6 Enlarged view of part C.

[0024] The labels for the attached figures are as follows:

[0025] 1. Shell; 2. Heat exchange tube; 3. First sealing shell; 4. Second sealing shell; 5. Sealing element;

[0026] 101. First feed pipe; 102. First discharge pipe; 103. Baffle plate; 104. Liquid passage gap; 105. First flange; 106. Sealing groove; 107. Diaphragm; 108. Sealant; 109. Limiting groove; 110. First connecting hole;

[0027] 201. Heat exchanger tank; 202. Mounting plate;

[0028] 301. Second feed pipe; 302. Second discharge pipe; 303. Sealing plate; 304. Feed chamber; 305. Discharge chamber; 306. Second flange; 307. Sealing ring; 308. Diaphragm rupture knife; 309. Limiting strip; 310. Second connecting hole;

[0029] 401. Rotary cavity; 402. Third flange. Detailed Implementation

[0030] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0031] It should be further noted that the accompanying drawings and embodiments of this utility model mainly describe the concept of this utility model. Based on this concept, some specific forms and settings of connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, under the premise that those skilled in the art understand the concept of this utility model, they can implement the above-mentioned specific forms and settings in a well-known manner.

[0032] When a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0033] The terms “length”, “width”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inner”, and “outer” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "multiple" means two or more, and "several" means one or more, unless otherwise explicitly specified.

[0035] The graphite heat exchanger provided by this utility model will now be described.

[0036] Please refer to the following: Figure 1 and Figure 2 , Figure 4 and Figure 5 The graphite heat exchanger includes a shell 1, a heat exchange tube assembly, a first sealing shell 3, and a second sealing shell 4. The shell 1 is cylindrical with openings at both ends. A first feed pipe 101 and a first discharge pipe 102 are provided on the shell 1. The first feed pipe 101 is located at the top of the shell 1 near the front end, and the first discharge pipe 102 is located at the bottom of the shell 1 near the rear end. The heat exchange tube assembly includes spaced-apart mounting plates 202 and multiple heat exchange tubes mounted on the mounting plates 202. Both ends of the heat exchange tubes are located on the outer sides of the mounting plates 202. Multiple heat exchange grooves 201 are provided on the sidewalls of each heat exchange tube, extending circumferentially along the heat exchange tube. The mounting plates 201... 02 is disposed on the inner wall of the shell 1, and the mounting plate 202 is sealed to the inner wall of the shell 1; the first sealing shell 3 is disposed at one end of the shell 1, and the first sealing shell 3 is sealed to the shell 1. The upper and lower sides of the first sealing shell 3 are respectively provided with the second feed pipe 301 and the second discharge pipe 302. The first sealing shell 3 is provided with a sealing plate 303. One end of the sealing plate 303 is connected to one of its mounting plates 202. The sealing plate 303 divides the internal space of the first sealing shell 3 into a feed chamber 304 and a discharge chamber 305. The feed chamber 304 and the discharge chamber 305 are connected to the heat exchange tubes on the corresponding sides; the second sealing shell 4 is disposed at the other end of the shell 1, and the second sealing shell 4 is sealed to the shell 1. The second sealing shell 4 is provided with a rotating chamber 401, and the rotating chamber 401 is connected to each heat exchange tube 2.

[0037] The beneficial effects of the graphite heat exchanger provided in this embodiment are as follows: Compared with the prior art, the graphite heat exchanger provided in this embodiment increases the heat exchange area of ​​the heat exchange tube by setting heat exchange grooves 201 on the side wall of the heat exchange tube 2, thereby improving the heat exchange efficiency without increasing the overall volume of the graphite heat exchanger, and greatly improving the applicability of the graphite heat exchanger.

[0038] like Figure 2 and Figure 6 As shown, multiple guide plates 103 are arranged between the mounting plates 202. Each guide plate 103 has interconnected arc-shaped and planar sidewalls. The arc-shaped sidewalls of the guide plates 103 are connected to the inner wall of the shell 1, while the planar sidewalls of the guide plates 103 and the inner wall of the shell 1 form liquid-passing gaps 104. These gaps 104 are arranged in an alternating vertical arrangement. The arrangement of the guide plates 103 increases the flow path of the material within the shell 1, thereby increasing the heat exchange time and ultimately improving the heat exchange efficiency of the graphite heat exchanger.

[0039] As a preferred technical solution, each heat exchange tube 2 is arranged passing through the mounting plate 202 and the guide plate 103, and the heat exchange tube 2 is sealed to the mounting plate 202 or the guide plate 103. Because a heat exchange groove 201 is provided on the side wall of the heat exchange tube 2, the sealed connection between the heat exchange tube 2 and the mounting plate 202 or the guide plate 103 prevents material inside the shell 1 from leaking from the heat exchange groove 201 to the outside of the mounting plate 202. This also ensures that the material can only flow through the various liquid passages, improving heat exchange efficiency.

[0040] like Figure 3 and Figure 4 As shown, the housing 1 has first flanges 105 at both ends, the first sealing shell 3 has a second flange 306 on its open end face, and the second sealing shell 4 has a third flange 402 on its open end face. One of the first flanges 105 is connected to the second flange 306, and the other first flange 105 is connected to the third flange 402. The arrangement of the first flanges 105, second flanges 306, and third flanges 402 facilitates the fixing of the first sealing shell 3 and the second sealing shell 4 onto the housing 1.

[0041] like Figure 3 , Figure 6 and Figure 7 As shown, a sealing groove 106 is provided on the connecting end face of the first flange 105. The sealing groove 106 is annular, and a sealing ring 307 is provided on the connecting end face of the second flange 306. The width of the sealing groove 106 is the same as the width of the sealing ring 307, and the sealing ring 307 is inserted into the sealing groove 106. The sealing groove 106 and the sealing ring 307 improve the sealing performance between the first flange 105 and the second flange 306, preventing material leakage.

[0042] Furthermore, a diaphragm 107 is provided within the sealing groove 106. The bottom of the sealing groove 106, the two side walls of the sealing groove 106, and the diaphragm 107 form a storage cavity. Sealant 108 is provided within the storage cavity. When the sealing ring 307 is fully inserted, the diaphragm 107 ruptures, and the sealant 108 fills the space between the sealing ring 307 and the side walls of the sealing groove 106. The sealant 108 improves the sealing performance between the sealing ring 307 and the sealing groove 106.

[0043] Preferably, the end of the sealing ring 307 is provided with a rupture blade 308, and the diaphragm 107 is made of a fragile material. The rupture blade 308 facilitates the sealing ring 307 to puncture the diaphragm 107, thereby facilitating the sealing member 5 to seal between the sealing ring 307 and the sealing groove 106.

[0044] In one possible implementation, the first flange 105 has a limiting groove 109 on its connecting end face and a plurality of first connecting holes 110 on its first flange 105; the second flange 306 has a limiting strip 309 on its connecting end face and a plurality of second connecting holes 310 on its second flange 306, with the first connecting holes 110 and the second connecting holes 310 corresponding one-to-one. When the limiting strip 309 is inserted into the limiting groove 109, the first connecting hole 110 is connected to the corresponding second connecting hole 310.

[0045] Furthermore, the outer wall of the first flange 105 is provided with a first thread, and the outer wall of the second flange 306 is provided with a second thread. When the first flange 105 and the second flange 306 are connected, the first thread and the second thread are combined to form a third thread. The inner wall of the sealing element 5 is provided with a fourth thread, which is compatible with the third thread. The sealing element 5 is screwed onto the outer walls of the first flange 105 and the second flange 306. The sealing element 5 further seals the first flange 105 and the second flange 306, preventing material leakage from the housing 1.

[0046] Finally, the second flange 306 has the same structure as the third flange 402, which makes the connection between the third flange 402 and the first flange 105 more airtight.

[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A graphite heat exchanger, characterized in that, include: The shell (1) is cylindrical, with openings at both ends. The shell (1) is provided with a first feed pipe (101) and a first discharge pipe (102). The first feed pipe (101) is located at the top of the shell (1) near the front end, and the first discharge pipe (102) is located at the bottom of the shell (1) near the rear end. The heat exchange tube assembly includes a spaced-apart mounting plate (202) and multiple heat exchange tubes disposed on the mounting plate (202). The two ends of the heat exchange tubes are disposed on the outer side of the mounting plate (202). Multiple heat exchange grooves (201) are provided on the side wall of each heat exchange tube. The heat exchange grooves (201) extend circumferentially along the heat exchange tube and are evenly arranged circumferentially along the heat exchange tube. The mounting plate (202) is disposed on the inner wall of the shell (1) and is sealed to the inner wall of the shell (1). The first sealing shell (3) is located at one end of the shell (1). The first sealing shell (3) is sealed to the shell (1). The upper and lower sides of the first sealing shell (3) are respectively provided with a second feed pipe (301) and a second discharge pipe (302). The first sealing shell (3) is provided with a sealing plate (303). One end of the sealing plate (303) is connected to one of the mounting plates (202). The sealing plate (303) divides the internal space of the first sealing shell (3) into a feed chamber (304) and a discharge chamber (305). The feed chamber (304) and the discharge chamber (305) are connected to the heat exchange tubes on the corresponding sides. The second sealing shell (4) is located at the other end of the shell (1). The second sealing shell (4) is sealed to the shell (1). The second sealing shell (4) is provided with a rotating cavity (401), which is connected to each of the heat exchange tubes (2).

2. The graphite heat exchanger as described in claim 1, characterized in that: Multiple guide plates (103) are provided between the mounting plates (202). The guide plates (103) have interconnected arc-shaped sidewalls and planar sidewalls. The arc-shaped sidewalls of the guide plates (103) are connected to the inner wall of the housing (1). The planar sidewalls of the guide plates (103) and the inner wall of the housing (1) are spaced apart to form liquid passage gaps (104). The liquid passage gaps (104) are arranged alternately up and down.

3. The graphite heat exchanger as described in claim 2, characterized in that: Each of the heat exchange tubes (2) is arranged through the mounting plate (202) and the guide plate (103), and the heat exchange tubes (2) are sealed to the mounting plate (202) or the guide plate (103).

4. The graphite heat exchanger as described in claim 3, characterized in that: The housing (1) has a first flange (105) at both ends, the first sealing shell (3) has a second flange (306) on the open end face, and the second sealing shell (4) has a third flange (402) on the open end face. One of the first flanges (105) is connected to the second flange (306), and the other of the first flanges (105) is connected to the third flange (402).

5. The graphite heat exchanger as described in claim 4, characterized in that: The first flange (105) has a sealing groove (106) on its connecting end face. The sealing groove (106) is annular. The second flange (306) has a sealing ring (307) on its connecting end face. The width of the sealing groove (106) is the same as the width of the sealing ring (307). The sealing ring (307) is inserted into the sealing groove (106).

6. The graphite heat exchanger as described in claim 5, characterized in that: The sealing groove (106) is provided with a diaphragm (107). The bottom of the sealing groove (106), the two side walls of the sealing groove (106) and the diaphragm (107) form a storage cavity. The storage cavity is provided with sealant (108). When the sealing ring (307) is inserted, the diaphragm (107) breaks and the sealant (108) fills the space between the sealing ring (307) and the side walls of the sealing groove (106).

7. The graphite heat exchanger as described in claim 6, characterized in that: The sealing ring (307) is provided with a membrane rupture knife (308) at its end, and the diaphragm (107) is made of a fragile material.

8. The graphite heat exchanger as described in claim 7, characterized in that: The first flange (105) has a limiting groove (109) on its connecting end face and a plurality of first connecting holes (110) on its first flange (105); the second flange (306) has a limiting strip (309) on its connecting end face and a plurality of second connecting holes (310) on its second flange (306). The first connecting holes (110) and the second connecting holes (310) correspond one-to-one. When the limiting strip (309) is inserted into the limiting groove (109), the first connecting hole (110) and the corresponding second connecting hole (310) are connected.

9. The graphite heat exchanger as described in claim 8, characterized in that: The outer wall of the first flange (105) is provided with a first thread, and the outer wall of the second flange (306) is provided with a second thread. When the first flange (105) and the second flange (306) are connected, the first thread and the second thread are combined to form a third thread. The inner wall of the sealing element (5) is provided with a fourth thread, which is adapted to the third thread. The sealing element (5) is screwed onto the outer walls of the first flange (105) and the second flange (306).

10. The graphite heat exchanger as described in claim 9, characterized in that: The second flange (306) has the same structure as the third flange (402).

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