Titanium tube heat exchanger capable of increasing heat exchange area

Abstract

The titanium tube heat exchanger capable of increasing the heat exchange area comprises end plates symmetrically arranged at the two ends, titanium heat exchange tubes are evenly distributed between the end plates, and outer shells for sealing the titanium heat exchange tubes are arranged on the side edges of the end plates. The titanium heat exchange tubes are obliquely arranged upwards in the flowing direction of fluid in the titanium heat exchange tubes, the guide plates are arranged in an inner cavity of the outer shell at intervals in the length direction of the outer shell, and the adjacent guide plates are arranged in a staggered mode in the radial direction and partially overlapped in the radial direction. The titanium heat exchange tubes are obliquely arranged, so that the flowing rate of the first fluid in the titanium heat exchange tubes can be slowed down, the retention time of the first fluid in the titanium heat exchange tubes is prolonged, heat exchange between the first fluid and the second fluid on the outer side of the tube body is improved, and the heat exchange efficiency of the heat exchanger is improved on the basis that the flow of the first fluid is not increased. And the arranged flow guide plate can also slow down the flow rate of the second fluid, the heat exchange time of the second fluid and the first fluid is prolonged, and therefore the heat exchange efficiency is further improved.

Description

Technical Field

[0001] The present application relates to the technical field of titanium tube heat exchangers, and in particular to a titanium tube heat exchanger with an increased heat exchange area. Background Art

[0002] The current conventional titanium tube heat exchanger structure is as shown in the attached manual. Figure 1 As shown, it includes end plates symmetrically arranged at both ends, titanium heat exchange tubes are evenly distributed between the end plates, and an outer shell that seals the titanium heat exchange tubes is arranged on the side of the end plates, and end covers are also arranged on the outside of the end plates on both sides, and the end covers on both sides are respectively provided with a first fluid inlet and a first fluid outlet, and a second fluid inlet and a second fluid outlet are respectively arranged on the top and bottom of the outer shell in opposite directions. The working principle of the heat exchanger is:

[0003] The first fluid is introduced from the first fluid inlet and flows into multiple titanium heat exchange tubes until it flows out from the first fluid outlet. During this circulation process, the second fluid is introduced from the second fluid inlet into the inner cavity space between the outer wall of the titanium heat exchange tube and the outer shell, contacts the outer wall surface of the titanium heat exchange tube, and then flows out from the second fluid outlet, realizing heat exchange between two fluids of different temperatures through the wall of the titanium heat exchange tube.

[0004] At present, the normal straight tube structure of titanium heat exchange tubes causes the flow speed of the first fluid flowing inside to be too fast, which makes its contact time with the tube wall of the titanium heat exchange tube short, and then the heat exchange efficiency with the second fluid outside the tube wall is low. Therefore, it is necessary to increase the inner diameter of the tube body and the flow rate of the fluid to improve the heat exchange efficiency. The increase in the tube diameter will reduce the number of titanium heat exchange tubes in the heat exchanger, and only the fluid in contact with the side wall of the tube body can effectively achieve heat transfer with the second fluid outside the tube body. The first fluid flowing in the middle position of the tube body (close to the axis) cannot effectively achieve heat transfer, so the heat exchange efficiency cannot be significantly improved. Increasing the fluid flow rate requires more fluid flow, which increases the difficulty of fluid heat exchange. Summary of the invention

[0005] In response to the above-mentioned problems, the present application aims to provide a titanium tube heat exchanger with an increased heat exchange area, which can increase the residence time of the first fluid and the second fluid in the titanium heat exchange tube to increase the heat exchange time of the two fluids, thereby improving the heat exchange efficiency of the heat exchanger without increasing the flow rate of the first fluid.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted in the present application is as follows: a titanium tube heat exchanger with an increased heat exchange area, the heat exchanger comprising end plates symmetrically arranged at both ends, titanium heat exchange tubes evenly distributed between the end plates, and an outer shell that seals the titanium heat exchange tubes is arranged on the side of the end plate, characterized in that: the titanium heat exchange tube has a first setting structure for slowing down the flow rate of the fluid therein.

[0007] Preferably, the first setting structure is to set the titanium heat exchange tube upwardly tilted along the flow direction of the fluid inside the tube.

[0008] Preferably, a second setting structure for slowing down the fluid flow rate between the outer wall of the titanium heat exchange tube and the inner cavity of the outer shell is also provided in the outer shell.

[0009] Preferably, the second arrangement structure is guide plates arranged in the inner cavity of the outer shell at intervals along the length direction thereof, and adjacent guide plates are staggered in the radial direction and partially overlap in the radial direction.

[0010] Preferably, each guide plate is provided with an adjustment hole for adjusting the fluid flow.

[0011] The beneficial effect of the present application is that the first setting structure designed in the present application can slow down the flow rate of the first fluid in the titanium heat exchange tube, increase the residence time of the first fluid in the titanium heat exchange tube, so as to improve the heat exchange between it and the second fluid outside the tube body, thereby improving the heat exchange efficiency of the heat exchanger without increasing the flow rate of the first fluid.

[0012] The second setting structure can also slow down the flow rate of the second fluid, increase the heat exchange time with the first fluid, and further improve the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the current structure diagram of the titanium tube heat exchanger.

[0014] Figure 2 This is the structural diagram of the titanium tube heat exchanger for this application.

[0015] Figure 3 For this application Figure 2 Enlarged view of the structure at point A in the middle.

[0016] Figure 4 A guide plate and a second fluid flow diagram are provided for this application.

[0017] Figure 5 For this application Figure 4 Sectional structural diagram along the B axis.

[0018] Figure 6 This is a diagram showing the adjustment holes provided on the guide plate of the present application.

[0019] Figure 7 This is a diagram illustrating the second fluid flow direction of the present application.

[0020] In the figure: 13-end cover; a1-first fluid inlet; a2-first fluid outlet; b1-second fluid inlet; b2-second fluid outlet. DETAILED DESCRIPTION

[0021] In order to enable ordinary technicians in the field to better understand the technical solution of the present application, the technical solution of the present application is further described below in conjunction with the accompanying drawings and embodiments.

[0022] See attached Figures 1 to 7 A titanium tube heat exchanger with increased heat exchange area is shown, the heat exchanger 1 includes end plates 11 symmetrically arranged at both ends, titanium heat exchange tubes 2 are evenly distributed between the end plates 11, and an outer shell 12 is arranged on the side of the end plates 11 to seal the titanium heat exchange tubes 2, and end covers are also arranged on the outside of the end plates 11 on both sides, and the end covers on both sides are respectively provided with a first fluid inlet and a first fluid outlet, and a second fluid inlet and a second fluid outlet are respectively arranged on the top and bottom of the outer shell in opposite directions.

[0023] In order to improve the heat exchange efficiency of the heat exchanger of rated capacity, the titanium heat exchange tube 2 described in the present application has a first setting structure for slowing down the circulation rate of the fluid therein, which can slow down the flow rate of the first fluid in the titanium heat exchange tube 2 and increase the residence time of the first fluid in the titanium heat exchange tube 2 to improve the heat exchange between it and the second fluid outside the tube body, thereby improving the heat exchange efficiency of the heat exchanger without increasing the flow rate of the first fluid.

[0024] Specifically, Figure 2-3 As shown, the first arrangement structure is to arrange the titanium heat exchange tube 2 in an upward tilted manner in the direction of the fluid flowing therein. Figure 3 The middle dotted line is a horizontal line, and each titanium heat exchange tube 2 is set at an angle to the horizontal line. When the first fluid enters the titanium heat exchange tube 2 from the first fluid inlet on the left, the titanium heat exchange tube 2 is inclined, which forms a resistance to the fluid flowing obliquely upward, and automatically slows down the flow rate of the first fluid in the titanium heat exchange tube 2, increases the heat exchange time with the second fluid on the outside of the tube wall, improves the heat exchange efficiency, and solves the problem of insufficient heat exchange efficiency caused by the first fluid flowing too fast in the horizontal titanium heat exchange tube 2.

[0025] In order to slow down the flow rate of the second fluid and increase the heat exchange time with the first fluid, a second setting structure is also provided in the outer shell 12 to slow down the fluid flow rate between the outer wall of the titanium heat exchange tube 2 and the inner cavity of the outer shell 12. The second setting structure can also slow down the flow rate of the second fluid and increase the heat exchange time with the first fluid, thereby further improving the heat exchange efficiency.

[0026] Preferably, Figure 2 As shown, the present application sets the second fluid inlet at the bottom of the outer shell near the first fluid outlet, and sets the second fluid outlet at the top of the outer shell near the first fluid inlet. The second fluid flows from bottom to top, increasing its flow resistance, thereby increasing the heat exchange time with the first fluid and increasing the heat exchange efficiency.

[0027] Specifically, Figure 4-5 As shown in the figure, the second arrangement structure is a guide plate 3 arranged in the inner cavity of the outer shell 12 at intervals along the length direction, and adjacent guide plates 3 are staggered in the radial direction, and adjacent guide plates 3 partially overlap in the radial direction. This structure allows the second fluid entering from the second fluid inlet to flow between the outer shell and the titanium heat exchange tube 2 at a speed of 1 / 400 rpm. Figure 4 The flow in the direction of the middle curved line s slows down the straight-line flow rate of the second fluid, thereby increasing the heat exchange time and heat exchange efficiency with the first fluid.

[0028] Preferably, the titanium heat exchange tube 2 is passed through the guide plate 3, so that the guide plate 3 supports the titanium heat exchange tube 2, improves the strength of the connection between the tube body and the end plate, and improves the service life of the heat exchanger.

[0029] like Figure 4 As shown, during the flow of the second fluid along the S-shaped curve, the second fluid will stay at the position shown in FIG. Figure 4 At the position shown in a, the second fluid at this position cannot achieve continuous heat exchange and circulation. Therefore, in order to solve this problem, Figure 6 As shown, each of the guide plates 3 is provided with an adjusting hole 3a for adjusting the fluid flow rate, and the hole size is set according to the flow rate of the second fluid so that the second fluid can be simultaneously Figure 7 The flow of the arrows arranged side by side in the figure avoids the problem of the second fluid accumulating and staying in the outer shell and affecting the heat exchange efficiency.

[0030] The principle of the present application is: during heat exchange, the first fluid enters the titanium heat exchange tube 2 from the first fluid inlet on the left, and is discharged from the first fluid outlet along the inclined structure of the titanium heat exchange tube 2; at the same time, the second fluid is introduced from the second fluid inlet, and flows between the outer shell and the outer wall of the titanium heat exchange tube to the second fluid outlet. During the flow process, the guide plate 3 is used to increase the path length of the second fluid, thereby increasing the heat exchange time with the first fluid and improving the heat exchange efficiency.

[0031] The above shows and describes the basic principles, main features and advantages of the present application. Without departing from the spirit and scope of the present application, the present application may have various changes and improvements, which fall within the scope of the present application to be protected.

Claims

1. A titanium tube heat exchanger with increased heat exchange area, the heat exchanger (1) comprising end plates (11) symmetrically arranged at both ends, titanium heat exchange tubes (2) evenly distributed between the end plates (11), and an outer shell (12) enclosing the titanium heat exchange tubes (2) is arranged on the side of the end plates (11), characterized in that: The titanium heat exchange tube (2) has a first setting structure for slowing down the flow rate of the fluid therein.

2. The titanium tube heat exchanger according to claim 1, characterized in that: The first arrangement structure is to arrange the titanium heat exchange tube (2) so as to be tilted upwards in the direction of flow of the fluid inside the tube.

3. The titanium tube heat exchanger according to claim 2, characterized in that: A second setting structure is also provided in the outer shell (12) to slow down the flow rate of the fluid between the outer wall of the titanium heat exchange tube (2) and the inner cavity of the outer shell (12).

4. The titanium tube heat exchanger according to claim 3, characterized in that: The second arrangement structure comprises guide plates (3) arranged in the inner cavity of the outer shell (12) at intervals along the length direction thereof, wherein adjacent guide plates (3) are arranged staggered in the radial direction, and adjacent guide plates (3) partially overlap in the radial direction.

5. The titanium tube heat exchanger according to claim 4, characterized in that: Each of the guide plates (3) is provided with an adjustment hole (3a) for adjusting the fluid flow rate.

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