Double-tube-plate heat exchanger

Abstract

The utility model belongs to the technical field of heat exchangers, and particularly relates to a double-tube-plate heat exchanger, which comprises a heat exchange tube mechanism, a tube plate mechanism, a partition plate and a tube box, the heat exchange tube mechanism comprises an outer-layer heat exchange tube and an inner-layer heat exchange tube, the outer-layer heat exchange tube and the inner-layer heat exchange tube respectively comprise a plurality of base tube parts and a plurality of turbulent flow tube parts, the base tube parts are communicated through the turbulent tube part, the inner diameter of the turbulent tube part is larger than that of the base tube part, the partition plate comprises a partition plate body and a partition plate protruding part, the partition plate body is fixedly connected with the partition plate protruding part, and the partition plate body is horizontal in the length direction; compared with the prior art, the heat exchanger has the advantages that the superficial areas of the outer-layer heat exchange tube and the inner-layer heat exchange tube are increased, the probability of turbulent flow formation is increased, heat exchange is facilitated, the turbulent flow tube portions of the outer-layer heat exchange tube and the turbulent flow tube portions of the inner-layer heat exchange tube are sequentially arranged in a staggered mode, and the heat exchange efficiency is improved. A water flow channel similar to a labyrinth is formed, and sufficient heat exchange can be achieved conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchangers, and specifically relates to a double-tube plate heat exchanger. Background Art

[0002] A double tube sheet heat exchanger is a heat exchange device. The double tube sheet heat exchanger includes a heat exchange tube mechanism, which is divided into a hot flow tube and a cold flow tube. Heat transfer is achieved through the fluid in the hot flow tube and the cold flow tube. Double tube sheet heat exchangers are widely used in chemical, petroleum, pharmaceutical, food and other fields. Double tube sheet heat exchangers have the characteristics of compact structure, high heat transfer efficiency, safe and reliable operation, etc., and play an important role in modern industrial production.

[0003] Existing double-tube sheet heat exchangers often increase the efficiency of heat exchange by increasing turbulence. Existing double-tube sheet heat exchangers often fix multiple baffles on the heat exchange tube mechanism to increase the degree of turbulence. However, when the baffles are subjected to a large impact, they are easy to fall off, and the heat exchange efficiency in the area where the baffles and the heat exchange tube mechanism are in contact is not high. Therefore, there is an urgent need for a double-tube sheet heat exchanger with good turbulence effect and high heat exchange efficiency. Utility Model Content

[0004] In view of the above problems, the utility model provides a double-tube sheet heat exchanger.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a double tube sheet heat exchanger, comprising a heat exchange tube mechanism, a tube sheet mechanism, a baffle and a tube box, wherein the tube box is in the shape of a long cylinder, wherein the heat exchange tube mechanism, the tube sheet mechanism and the baffle are all installed in the tube box cavity, wherein the heat exchange tube mechanism comprises an outer layer heat exchange tube and an inner layer heat exchange tube, wherein the outer layer heat exchange tube and the inner layer heat exchange tube both comprise a base tube portion and a turbulent tube portion, wherein the number of the base tube portions is multiple, wherein the multiple base tube portions are connected through the turbulent tube portion, and wherein the inner diameter of the turbulent tube portion is larger than the inner diameter of the base tube portion;

[0006] The tube sheet mechanism divides the tube box into chamber one and chamber two, and the outer layer heat exchange tube and the inner layer heat exchange tube are both connected to chamber one and chamber two;

[0007] The partition includes a partition body and a partition protrusion, the partition body and the partition protrusion are fixedly connected, and the length direction of the partition body is horizontal.

[0008] Preferably, the partition plate protrusion is an arched plate, and there are multiple partition plate protrusions.

[0009] Preferably, the inner diameter of the base tube portion of the outer layer heat exchange tube is greater than the inner diameter of the base tube portion of the inner layer heat exchange tube.

[0010] Preferably, the partition further comprises a partition insulation portion, the lower end of the partition insulation portion is fixedly connected to the partition body, and the upper end of the partition insulation portion is in contact with the tube sheet mechanism.

[0011] Preferably, the partition protrusion is provided with partition holes, and the number of the partition holes is plural.

[0012] Preferably, the partition further includes a partition guide portion, and the partition guide portion is installed on the partition body.

[0013] Preferably, the pipe box comprises a pipe box body and turbulence generating plates, and the number of the turbulence generating plates is multiple, and the multiple turbulence generating plates are all detachably connected to the inner wall of the pipe box body.

[0014] Preferably, the double tube sheet heat exchanger further comprises a shell side fluid inlet, a shell side fluid outlet, a tube side fluid inlet and a tube side fluid outlet, wherein the shell side fluid inlet, the shell side fluid outlet, the tube side fluid inlet and the tube side fluid outlet are all installed in a tube box, the shell side fluid inlet is located directly above the shell side fluid outlet, and the tube side fluid inlet is located directly above the tube side fluid outlet;

[0015] The shell-side fluid inlet and the shell-side fluid outlet are located in the second chamber, and the tube-side fluid inlet and the tube-side fluid outlet are located in the first chamber.

[0016] Compared with the prior art, the advantages and positive effects of the utility model are:

[0017] (1) The inner diameter of the turbulent tube section is larger than that of the base tube section, which increases the surface area of ​​the outer and inner heat exchange tubes and the probability of turbulence formation, which is more conducive to heat exchange. The turbulent tube section of the outer heat exchange tube and the turbulent tube section of the inner heat exchange tube appear alternately in sequence, forming a water flow channel similar to a maze, which facilitates sufficient heat exchange without the need for baffles.

[0018] (2) The baffle body and the baffle protrusion are fixedly connected. The fluid near the baffle body is far away from the inner heat exchange tube. The baffle protrusion plays a certain role in blocking the fluid near the baffle body, which facilitates the formation of turbulence and improves the degree of heat exchange.

[0019] (3) The raised part of the partition is an arched plate, which is higher in the middle and lower at both ends. Since the middle part is far away from the inner wall of the tube box, the turbulence degree is increased by increasing the height;

[0020] (4) The baffle plate has baffle holes on its raised portion, which increase the degree of turbulence;

[0021] (5) The baffle guide is installed at the end of the baffle body away from the tube sheet structure. The baffle guide guides the fluid near one end of the baffle body to move upward, forming turbulence and facilitating full mixing of fluids at different positions;

[0022] (6) Multiple turbulence generating plates are detachably connected to the inner wall of the tube box body, thereby increasing the degree of turbulence. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for describing the embodiment:

[0024] Figure 1 It is a cross-sectional view of a double tube sheet heat exchanger;

[0025] Figure 2 This is the front view of the double tube sheet heat exchanger;

[0026] Figure 3 This is the main view of the partition of the double tube sheet heat exchanger;

[0027] Figure 4 A three-dimensional view of the partition of a double tube sheet heat exchanger;

[0028] Figure 5 It is a schematic diagram of the outer heat exchange tube of the double tube sheet heat exchanger;

[0029] Figure 6 Schematic diagram of the inner heat exchange tubes of a double tube sheet heat exchanger.

[0030] Reference numerals:

[0031] 1—heat exchange tube structure, 11—outer heat exchange tube, 12—inner heat exchange tube, 13—base tube part, 14—turbulent tube part;

[0032] 2—Tube sheet mechanism;

[0033] 3—partition, 31—partition body, 32—partition protrusion, 33—partition insulation part, 34—partition guide part, 35—partition hole;

[0034] 4—pipe box, 41—pipe box body, 42—turbulence generating plate;

[0035] 5—shell side fluid inlet;

[0036] 6—shell side fluid outlet;

[0037] 7—Tube fluid inlet;

[0038] 8—Tube side fluid outlet. DETAILED DESCRIPTION

[0039] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0040] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0041] Example 1

[0042] Combine the following Figures 1 to 6 Specifically describe the double tube sheet heat exchanger, such as Figure 1 and Figure 2 As shown, a double tube sheet heat exchanger includes a heat exchange tube mechanism 1, a tube sheet mechanism 2, a partition 3 and a tube box 4. The tube box 4 is a long cylindrical shape. The heat exchange tube mechanism 1, the tube sheet mechanism 2 and the partition 3 are all installed in the cavity of the tube box 4. The heat exchange tube mechanism 1 includes an outer layer heat exchange tube 11 and an inner layer heat exchange tube 12. Figure 5 and Figure 6 As shown, the outer layer heat exchange tube 11 and the inner layer heat exchange tube 12 both include a base tube portion 13 and a turbulent tube portion 14 . There are multiple base tube portions 13 , and the multiple base tube portions 13 are connected through the turbulent tube portion 14 . The inner diameter of the turbulent tube portion 14 is larger than the inner diameter of the base tube portion 13 .

[0043] The tube sheet mechanism 2 divides the tube box 4 into chamber one and chamber two, and the outer layer heat exchange tube 11 and the inner layer heat exchange tube 12 are connected to chamber one and chamber two.

[0044] like Figure 3 and Figure 4 As shown, the partition 3 includes a partition body 31 and a partition protrusion 32. The partition body 31 and the partition protrusion 32 are fixedly connected, and the length direction of the partition body 31 is horizontal.

[0045] like Figure 4 As shown, the partition plate protrusion 32 is an arched plate, and there are multiple partition plate protrusions 32.

[0046] like Figure 1 As shown, the inner diameter of the base tube portion 13 of the outer layer heat exchange tube 11 is greater than the inner diameter of the base tube portion 13 of the inner layer heat exchange tube 12 .

[0047] like Figure 1 and Figure 3 As shown, the partition 3 also includes a partition insulation part 33, the lower end of the partition insulation part 33 is fixedly connected to the partition body 31, and the upper end of the partition insulation part 33 is in contact with the tube sheet mechanism 2.

[0048] like Figure 4 As shown, a plurality of partition holes 35 are provided on the partition protrusion 32 .

[0049] like Figure 3 As shown, the partition 3 further includes a partition guide portion 34 , and the partition guide portion 34 is installed at one end of the partition body 31 away from the tube sheet mechanism 2 .

[0050] like Figure 1 As shown, the pipe box 4 includes a pipe box body 41 and turbulence generating plates 42 . There are multiple turbulence generating plates 42 , and the multiple turbulence generating plates 42 are all detachably connected to the inner wall of the pipe box body 41 .

[0051] like Figure 1 As shown, the double tube sheet heat exchanger also includes a shell-side fluid inlet 5, a shell-side fluid outlet 6, a tube-side fluid inlet 7 and a tube-side fluid outlet 8. The shell-side fluid inlet 5, the shell-side fluid outlet 6, the tube-side fluid inlet 7 and the tube-side fluid outlet 8 are all installed in the tube box 4. The shell-side fluid inlet 5 is located directly above the shell-side fluid outlet 6, and the tube-side fluid inlet 7 is located directly above the tube-side fluid outlet 8. The shell-side fluid inlet 5 and the shell-side fluid outlet 6 are arranged on the same side of the tube sheet mechanism 2, and the tube-side fluid inlet 7 and the tube-side fluid outlet 8 are arranged on the other side of the tube sheet mechanism 2. The outer layer heat exchange tube 11 and the inner layer heat exchange tube 12 are both U-shaped, and both ends of the outer layer heat exchange tube 11 pass through the tube sheet mechanism 2, and both ends of the inner layer heat exchange tube 12 pass through the tube sheet mechanism 2.

[0052] The shell-side fluid inlet 5 and the shell-side fluid outlet 6 are located in the second chamber, and the tube-side fluid inlet 7 and the tube-side fluid outlet 8 are located in the first chamber.

[0053] The fluid flowing between the shell-side fluid inlet 5 and the shell-side fluid outlet 6 is called the shell-side fluid, and the fluid flowing between the tube-side fluid inlet 7 and the tube-side fluid outlet 8 is called the tube-side fluid.

[0054] Working principle of double tube sheet heat exchanger:

[0055] The shell-side fluid enters the tube box 4 from the shell-side fluid inlet 5 above the baffle body 31 and moves to the right, while the tube-side fluid above the baffle body 31 just flows to the left and then flows out from the tube-side fluid outlet 8, so that above the baffle body 31, the flow directions of the tube-side fluid and the shell fluid are opposite, achieving convection, thereby improving the heat exchange efficiency; similarly, the flow directions of the shell-side fluid and the tube-side fluid below the baffle body 31 are also opposite. Since the inner diameter of the turbulent tube portion 14 is larger than the inner diameter of the base tube portion 13, and the turbulent tube portion 14 of the outer heat exchange tube 11 and the turbulent tube portion 14 of the inner heat exchange tube 12 appear alternately in sequence, the surface area of ​​the outer heat exchange tube 11 and the inner heat exchange tube 12 is increased, the probability of turbulence formation is increased, and it is more conducive to heat exchange, forming a water flow channel similar to a maze, which is convenient for achieving sufficient heat exchange.

[0056] The above description is only a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes for application in other fields. However, any simple modification or equivalent change made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A double tube sheet heat exchanger, comprising a heat exchange tube mechanism (1), a tube sheet mechanism (2), a partition (3) and a tube box (4), wherein the tube box (4) is in the shape of a long cylinder, and the heat exchange tube mechanism (1), the tube sheet mechanism (2) and the partition (3) are all installed in the cavity of the tube box (4), characterized in that: The heat exchange tube structure (1) comprises an outer heat exchange tube (11) and an inner heat exchange tube (12), wherein the outer heat exchange tube (11) and the inner heat exchange tube (12) both comprise a base tube portion (13) and a turbulent tube portion (14), wherein the base tube portions (13) are multiple in number, the multiple base tube portions (13) are connected via the turbulent tube portion (14), and the inner diameter of the turbulent tube portion (14) is greater than the inner diameter of the base tube portion (13); The tube sheet mechanism (2) divides the tube box (4) into chamber one and chamber two, and the outer layer heat exchange tube (11) and the inner layer heat exchange tube (12) are both connected to chamber one and chamber two; The partition plate (3) comprises a partition plate body (31) and a partition plate protrusion (32); the partition plate body (31) and the partition plate protrusion (32) are fixedly connected; and the partition plate body (31) is horizontal in its length direction.

2. A double tube sheet heat exchanger according to claim 1, characterized in that: The partition plate protrusion (32) is an arched plate, and there are a plurality of the partition plate protrusions (32).

3. A double tube sheet heat exchanger according to claim 1, characterized in that: The inner diameter of the base tube portion (13) of the outer layer heat exchange tube (11) is greater than the inner diameter of the base tube portion (13) of the inner layer heat exchange tube (12).

4. A double tube sheet heat exchanger according to claim 1, characterized in that: The partition (3) further comprises a partition insulation portion (33), the lower end of the partition insulation portion (33) being fixedly connected to the partition body (31), and the upper end of the partition insulation portion (33) being in contact with the tube sheet mechanism (2).

5. A double tube sheet heat exchanger according to claim 1, characterized in that: The partition plate protrusion (32) is provided with a partition plate hole (35), and the partition plate holes (35) are multiple in number.

6. A double tube sheet heat exchanger according to claim 1, characterized in that: The partition (3) further comprises a partition guide portion (34), wherein the partition guide portion (34) is mounted on the partition body (31).

7. A double tube sheet heat exchanger according to claim 1, characterized in that: The pipe box (4) comprises a pipe box body (41) and turbulence generating plates (42), wherein the number of the turbulence generating plates (42) is multiple, and the multiple turbulence generating plates (42) are all detachably connected to the inner wall of the pipe box body (41).

8. The double tube sheet heat exchanger according to claim 1, characterized in that: The double tube sheet heat exchanger further comprises a shell-side fluid inlet (5), a shell-side fluid outlet (6), a tube-side fluid inlet (7) and a tube-side fluid outlet (8); the shell-side fluid inlet (5), the shell-side fluid outlet (6), the tube-side fluid inlet (7) and the tube-side fluid outlet (8) are all installed on the tube box (4); the shell-side fluid inlet (5) is located directly above the shell-side fluid outlet (6), and the tube-side fluid inlet (7) is located directly above the tube-side fluid outlet (8); The shell-side fluid inlet (5) and the shell-side fluid outlet (6) are located in chamber two, and the tube-side fluid inlet (7) and the tube-side fluid outlet (8) are located in chamber one.

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