Anti-vibration gas-liquid heat exchanger

Abstract

The invention provides an anti-vibration gas-liquid heat exchanger which comprises a gas pipe box, a liquid inlet pipe box, a liquid outlet pipe box and a lower shell, the gas pipe box is provided with a gas inlet and a gas outlet, the gas outlet is connected with the lower shell, the lower shell is provided with an exhaust port, the liquid inlet pipe box is arranged on one side of the gas pipe box, the liquid outlet pipe box is arranged on the other side of the gas pipe box, and at least one heat exchange partition plate row is arranged in the gas pipe box. One end of the heat exchange partition plate row is connected with a first pipe plate of the liquid inlet pipe box, the other end of the heat exchange partition plate row is connected with a second pipe plate of the liquid outlet pipe box, the gas pipe box is internally divided into at least two pipe distribution cavities, a plurality of heat exchange pipes are arranged in the pipe distribution cavities and communicated with the liquid inlet pipe box and the liquid outlet pipe box respectively, and the heat exchange partition plate row is provided with a liquid medium flow channel. The liquid medium flow channel is respectively communicated with the liquid inlet pipe box and the liquid outlet pipe box; by arranging the heat exchange partition plate columns with the liquid medium flow channels, acoustic resonance in the gas-liquid heat exchanger is avoided, the heat exchange area / volume ratio of the whole heat exchanger is increased, and the cost of the heat exchanger is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchange equipment, and particularly to a vibration-proof gas-liquid heat exchanger. Background Art

[0002] At present, gas-liquid heat exchangers have been widely used in the industrial field. However, under certain specific operating conditions, acoustic resonance often occurs in gas-liquid heat exchangers, generating vibration noise. At the same time, components such as heat exchange tubes inside the heat exchanger will vibrate, seriously affecting the use safety of related equipment when it is severe.

[0003] Existing research has found that this acoustic resonance phenomenon often exists in three ways: 1. Resonance caused by the coupling between the Karman vortex frequency and the acoustic standing wave frequency in the gas chamber of the heat exchanger tube box; 2. Vibration caused by the coupling between the Karman vortex frequency and the natural frequency of the heat exchange tubes; 3. Vibration caused by the simultaneous coupling of the Karman vortex frequency, the heat exchanger tube box, and the structural mechanical vibration. In order to avoid the vibration generated during the application of gas-liquid heat exchangers, existing technologies often set additional partitions inside the heat exchanger. However, the setting of such partitions often occupies a certain medium flow space, not only increasing the difficulty of arranging and assembling related components inside the heat exchanger, but also, due to the heat exchange space occupied by the partitions themselves and the partitioning effect of the partitions, undoubtedly increasing the volume of the entire heat exchanger on the premise of meeting the target heat exchange effect, resulting in high equipment costs and a small heat transfer area per unit volume, and to a certain extent, reducing the heat transfer efficiency. This makes it difficult for existing gas-liquid heat exchangers to simultaneously take into account vibration prevention, structural compactness, and improvement of heat transfer efficiency. Summary of the Invention

[0004] In view of this, the present invention aims to propose a vibration-proof gas-liquid heat exchanger to solve the problem that existing gas-liquid heat exchangers are difficult to simultaneously take into account vibration prevention, structural compactness, and improvement of heat transfer efficiency.

[0005] To achieve the above object, the technical solution of the present invention is realized as follows:

[0006] A vibration-proof gas-liquid heat exchanger includes a gas header, a liquid inlet header, a liquid outlet header, and a lower shell. The gas header has an air inlet and an air outlet, and the air outlet is connected to the lower shell. The lower shell has an exhaust port. The liquid inlet header is arranged on one side of the gas header, and the liquid outlet header is arranged on the other side. At least one set of heat exchange baffle rows is arranged in the gas header. One end of the heat exchange baffle row is connected to the first tube sheet of the liquid inlet header, and the other end is connected to the second tube sheet of the liquid outlet header, dividing the inside of the gas header into at least two tube arrangement chambers. A plurality of heat exchange tubes are arranged in the tube arrangement chambers, and the heat exchange tubes are respectively communicated with the liquid inlet header and the liquid outlet header. The heat exchange baffle row has a liquid medium flow channel, and the liquid medium flow channel is respectively communicated with the liquid inlet header and the liquid outlet header.

[0007] Furthermore, a drain pipe is provided on the lower shell.

[0008] Furthermore, along the gas flow direction, a flow guiding plate, a water collecting plate, and a water guiding plate are sequentially arranged from top to bottom inside the lower shell, and the lower edge of the water collecting plate is directly above the water guiding plate.

[0009] Furthermore, a capillary layer is provided on the surface of the water collecting plate.

[0010] Furthermore, the heat exchange partition plate column includes a plurality of heat exchange plates stacked sequentially from top to bottom. For any one heat exchange plate, a liquid medium flow channel is provided inside the plate body of the heat exchange plate, and manifolds communicating with the liquid medium flow channel are provided at both ends of the plate body. The manifold at one end of the plate body is connected to the liquid inlet header, and the manifold at the other end of the plate body is connected to the liquid outlet header.

[0011] Furthermore, for any one heat exchange plate, the heat exchange plate has a first side wall and a second side wall. The heat exchange plate is arranged in the vertical direction, and the direction from the first side wall to the second side wall is parallel to and coplanar with the vertical direction.

[0012] Furthermore, for any two adjacent heat exchange plates, the second side wall of the upper heat exchange plate faces the first side wall of the lower heat exchange plate.

[0013] Furthermore, an air inlet part is provided at the upper end of the gas header. One end of the air inlet part is provided with an air inlet, and the other end is connected to the gas header. A flow guiding member is provided inside the air inlet part.

[0014] Furthermore, a liquid inlet pipe is provided at one end of the liquid inlet header, and the other end is connected to the side wall of the gas header; a liquid outlet pipe is provided at one end of the liquid outlet header, and the other end is connected to the side wall of the gas header.

[0015] Furthermore, an anti - impact cone is provided inside the liquid inlet header, and the conical surface of the anti - impact cone faces the liquid inlet pipe.

[0016] Compared with the prior art, the anti - vibration gas - liquid heat exchanger of the present invention has the following advantages:

[0017] A gas-liquid heat exchanger with anti-vibration function according to the present invention divides the entire gas flow space in the gas tube box into at least two chambers by arranging a heat exchange partition column with liquid medium flow channels inside the gas-liquid heat exchanger. On one hand, the acoustic standing wave frequency in each chamber will change. In particular, the spatial volume of each chamber is different, and even the chamber shape can be different, which can disrupt the coupling with the Karman vortex frequency during the heat exchange process and effectively avoid the occurrence of acoustic resonance in the gas-liquid heat exchanger. On the other hand, the heat exchange partition column not only provides the functions of separating space and reducing vibration, but also can be used as a heat exchange component. The liquid medium can flow into the liquid medium flow channels of the heat exchange partition column and exchange heat with the gas in the gas tube box, improving the layout compactness of the heat exchange components in the gas-liquid heat exchanger, increasing the heat exchange area / volume ratio of the entire heat exchanger, being beneficial to reducing the cost of the heat exchanger, and also being beneficial to improving the heat exchange efficiency of the gas-liquid heat exchanger to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 is a schematic structural diagram of a gas-liquid heat exchanger with anti-vibration function according to an embodiment of the present invention (schematic in the first medium flow direction);

[0020] Figure 2 is in the embodiment of the present invention Figure 1 is a cross-sectional view taken along the line A-A (schematic corresponding to the second medium flow direction);

[0021] Figure 3 is in the embodiment of the present invention Figure 1 is a partial enlarged view at B;

[0022] Figure 4 is a schematic structural diagram of the heat exchange plate according to an embodiment of the present invention;

[0023] Figure 5 is in the embodiment of the present invention Figure 4 is a cross-sectional view taken along the line C-C;

[0024] Figure 6 is another schematic structural diagram of a gas-liquid heat exchanger with anti-vibration function according to an embodiment of the present invention (schematic in the first medium flow direction).

[0025] Description of the reference numerals:

[0026] 1. Gas tube box; 11. Inlet part; 12. Inlet port; 13. Flow guide member; 14. Outlet port; 2. Heat exchange tube; 3. Heat exchange plate; 31. Plate body; 32. Confluence pipe; 33. Liquid medium flow channel; 34. First side wall; 35. Second side wall; 4. Liquid inlet tube box; 41. Liquid inlet tube; 42. Impact prevention cone; 5. Liquid outlet tube box; 51. Liquid outlet tube; 6. First tube sheet; 7. Second tube sheet; 8. Support plate; 9. Lower shell; 91. Flow guide plate; 92. Water collection plate; 93. Water guide plate; 94. Drain pipe; 95. Exhaust port. Detailed implementation mode

[0027] The following will use the terms that those skilled in the art usually use to convey the essence of their work to other technicians in the art to describe the inventive concept of the present disclosure. However, these inventive concepts can be embodied in many different forms and should not be considered limited to the embodiments described herein.

[0028] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The directional terms in this application, such as "upper and lower", are based on the coordinates in the appendix Figure 1 in the appendix.

[0029] The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0030] Embodiment 1

[0031] In the prior art, acoustic resonance often occurs in gas-liquid heat exchangers, generating vibration noise. At the same time, components such as heat exchange tubes will shake inside the heat exchanger, seriously affecting the use safety of related equipment. In order to avoid the vibration generated during the application of gas-liquid heat exchangers, the prior art often sets additional partitions inside the heat exchanger. However, the setting of such partitions often occupies a certain medium flow space, not only increasing the difficulty of arranging and assembling related components inside the heat exchanger, but also due to the fact that the partitions themselves occupy a certain heat exchange space and the partitioning effect of the partitions, on the premise of meeting the target heat exchange effect, it will undoubtedly increase the volume of the entire heat exchanger, resulting in high equipment costs and a small heat exchange area per unit volume, and to a certain extent, the heat exchange efficiency is low. This makes it difficult for existing gas-liquid heat exchangers to simultaneously take into account the problems of anti-vibration, structural compactness, and improvement of heat exchange efficiency.

[0032] In order to solve the problem that it is difficult for gas-liquid heat exchangers in the prior art to simultaneously take into account anti-vibration, structural compactness, and improvement of heat exchange efficiency, this embodiment proposes an anti-vibration gas-liquid heat exchanger, as shown in the appendix Figure 1-5As shown in the figure, the gas-liquid heat exchanger includes a gas header 1, a liquid inlet header 4, and a liquid outlet header 5. An air inlet 12 is provided at the upper end of the gas header 1, and an air outlet 14 is provided at the lower end of the gas header 1. The liquid inlet header 4 is provided on one side of the gas header 1, and the liquid outlet header 5 is provided on the other side. At least one set of heat exchange baffle columns is provided in the gas header 1. One end of the heat exchange baffle column is connected to the first tube sheet 6 of the liquid inlet header 4, and the other end is connected to the second tube sheet 7 of the liquid outlet header 5, dividing the inside of the gas header 1 into at least two tube-layout chambers. A plurality of heat exchange tubes 2 are provided in the tube-layout chambers, and the heat exchange tubes 2 are respectively communicated with the liquid inlet header 4 and the liquid outlet header 5. The heat exchange baffle column has a liquid medium flow channel 33, and the liquid medium flow channel 33 is respectively communicated with the liquid inlet header 4 and the liquid outlet header 5.

[0033] Therefore, in this application, by providing a heat exchange baffle column with a liquid medium flow channel 33 in the gas-liquid heat exchanger, on the one hand, the entire gas flow space in the gas header 1 is divided into at least two chambers, and the acoustic standing wave frequency in each chamber will change. In particular, the spatial volume sizes between each chamber are different, and even the chamber shapes can be different, which can destroy the coupling with the Karman vortex frequency during the heat exchange process and effectively avoid the occurrence of acoustic resonance in the gas-liquid heat exchanger; on the other hand, the heat exchange baffle column not only provides the functions of separating space and reducing vibration, but also can serve as a heat exchange component. The liquid medium can flow into the liquid medium flow channel 33 of the heat exchange baffle column and exchange heat with the gas in the gas header 1 (which can be regarded as the shell side), improving the layout compactness of the heat exchange components in the gas-liquid heat exchanger, increasing the heat exchange area / volume ratio of the entire heat exchanger, being beneficial to reducing the cost of the heat exchanger, and also being beneficial to improving the heat exchange efficiency of the gas-liquid heat exchanger to a certain extent.

[0034] Among them, the heat exchange baffle column includes a plurality of heat exchange plates 3 stacked in sequence from top to bottom. For any one heat exchange plate 3, a liquid medium flow channel 33 is provided in the plate body 31 of the heat exchange plate 3. Confluence pipes 32 communicated with the liquid medium flow channel 33 are provided at both ends of the plate body 31. The confluence pipe 32 at one end of the plate body 31 is connected to the liquid inlet header 4, and the confluence pipe 32 at the other end of the plate body 31 is connected to the liquid outlet header 5, enabling the liquid medium of the gas-liquid heat exchanger to flow into the heat exchange plate 3 and exchange heat with the gas medium while providing the functions of separating space and reducing vibration.

[0035] For any heat exchange plate 3, the heat exchange plate 3 has a first side wall 34 and a second side wall 35. The heat exchange plate 3 is arranged in the vertical direction, and the direction from the first side wall 34 to the second side wall 35 is parallel to and coplanar with the vertical direction. Specifically, for any two adjacent heat exchange plates 3, the second side wall 35 of the upper heat exchange plate 3 faces the first side wall 34 of the lower heat exchange plate 3, and they can be in contact or not in contact. Thus, in the heat exchange partition column, the heat exchange plates 3 are stacked in the direction from the first side wall 34 to the second side wall 35 (which can be regarded as the width direction). On the one hand, it enables the heat exchange surfaces of the plate bodies 31 to easily contact the gas medium, which is beneficial to improving the heat exchange efficiency between gas and liquid. On the other hand, along the flowing direction of the gas medium from top to bottom, relatively fewer heat exchange plates 3 can be set to stack the required heat exchange partition column, leaving more space for the large-scale arrangement of the heat exchange tubes 2.

[0036] An air inlet part 11 is arranged at the upper end of the gas header 1. One end of the air inlet part 11 is provided with an air inlet 12, and the other end is connected to the gas header 1. A flow guiding member 13 is arranged in the air inlet part 11, so that the gas medium can flow into the gas header 1 more evenly, avoiding the situation of "large air flow in the middle area of the gas header 1 and small air flow in the edge area", and it is also beneficial to relatively uniform heat exchange in each heat exchange area of the gas-liquid heat exchanger.

[0037] One end of the liquid inlet header 4 is provided with a liquid inlet pipe 41, and the other end is connected to the side wall of the gas header 1; one end of the liquid outlet header 5 is provided with a liquid outlet pipe 51, and the other end is connected to the side wall of the gas header 1, so that the gas can flow into each heat exchange tube 2 and each heat exchange plate 3 from the liquid inlet header 4, and after gas-liquid heat exchange, it flows into the liquid outlet header 5. An anti-impact cone 42 is arranged in the liquid inlet header 4, and the conical surface of the anti-impact cone 42 faces the liquid inlet pipe 41. Thus, the liquid flowing into the liquid inlet header 4 from the liquid inlet pipe 41, under the action of the anti-impact cone 42, on the one hand, decelerates the liquid flow rate to avoid the liquid impacting the heat exchange components at high speed, and on the other hand, guides and diverts the liquid flow direction, so that the liquid can flow into each heat exchange tube 2 and each heat exchange plate 3 in a relatively dispersed and uniform manner.

[0038] A first tube sheet 6 is arranged on the side of the liquid inlet header 4 close to the gas header 1, and a second tube sheet 7 is arranged on the side of the liquid outlet header 5 close to the gas header 1. The first tube sheet 6 and the second tube sheet 7 fix the heat exchange tubes 2 and the heat exchange plates 3. It should be noted that for the heat exchange plate 3, the first tube sheet 6 and the second tube sheet 7 are used to connect the manifold pipes 32 at the ends of the heat exchange plate 3. A support plate 8 is arranged in the gas header 1, and the support plate 8 can support the heat exchange tubes 2 and the heat exchange plates 3.

[0039] Embodiment 2

[0040] As shown in the appendix Figure 6 As shown, based on all the contents of Embodiment 1, the gas-liquid heat exchanger of this embodiment further includes a lower shell 9. The outlet 14 of the gas header 1 is connected to the lower shell 9. The lower shell 9 is provided with a drain pipe 94 and an exhaust port 95. After gas heat exchange, the gas enters the lower shell 9 from the gas header 1, and the gas flows out through the exhaust port 95 to downstream equipment. The condensed water that may precipitate in the gas is discharged through the drain pipe 94.

[0041] Along the gas flow direction, a baffle plate 91, a water collecting plate 92, and a water guiding plate 93 are sequentially arranged in the lower shell 9 from top to bottom. The surface of the water collecting plate 92 is provided with a capillary layer for adsorbing and collecting the condensed water carried in the gas. The lower edge of the water collecting plate 92 is located directly above the water guiding plate 93. The water guiding plate 93 is used to receive the water dripping from the water collecting plate 92 and drain it to the drain pipe 94 for external discharge.

[0042] In the top-to-bottom direction, the cross-sectional area of the lower shell 9 gradually decreases, so that the lower shell 9 gradually tapers from top to bottom, which is convenient for gas confluence and is also beneficial to reducing the occupied space volume of the entire gas-liquid heat exchanger. The drain pipe 94 is arranged on the side wall of the lower shell 9, and the lower edge of the water guiding plate 93 is flush with the lower edge of the inlet of the drain pipe 94, so that all the condensed water can be discharged through the drain pipe 94.

[0043] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vibration-proof gas-liquid heat exchanger, characterized in that, the gas-liquid heat exchanger includes a gas header (1), a liquid inlet header (4), a liquid outlet header (5), and a lower shell (9). The gas header (1) has an air inlet (12) and an air outlet (14). The air outlet (14) is connected to the lower shell (9). The lower shell (9) has an exhaust port (95). The liquid inlet header (4) is arranged on one side of the gas header (1), and the liquid outlet header (5) is arranged on the other side. At least one group of heat exchange baffle columns is arranged in the gas header (1). One end of the heat exchange baffle column is connected to the first tube sheet (6) of the liquid inlet header (4), and the other end is connected to the second tube sheet (7) of the liquid outlet header (5), dividing the inside of the gas header (1) into at least two tube arrangement chambers. A plurality of heat exchange tubes (2) are arranged in the tube arrangement chambers. The heat exchange tubes (2) are respectively communicated with the liquid inlet header (4) and the liquid outlet header (5). The heat exchange baffle column has a liquid medium flow channel (33), and the liquid medium flow channel (33) is respectively communicated with the liquid inlet header (4) and the liquid outlet header (5).

2. The vibration-proof gas-liquid heat exchanger according to claim 1, characterized in that, a drain pipe (94) is arranged on the lower shell (9).

3. The vibration-proof gas-liquid heat exchanger according to claim 1, characterized in that, along the gas flow direction, a flow guide plate (91), a water collecting plate (92), and a water guiding plate (93) are sequentially arranged from top to bottom inside the lower shell (9). The lower edge of the water collecting plate (92) is located directly above the water guiding plate (93).

4. The vibration-proof gas-liquid heat exchanger according to claim 3, characterized in that, a capillary layer is arranged on the surface of the water collecting plate (92).

5. The vibration-proof gas-liquid heat exchanger according to claim 1, characterized in that, the heat exchange baffle column includes a plurality of heat exchange plates (3) stacked sequentially from top to bottom. For any one heat exchange plate (3), a liquid medium flow channel (33) is arranged inside the plate body (31) of the heat exchange plate (3). Confluence pipes (32) communicated with the liquid medium flow channel (33) are arranged at both ends of the plate body (31). The confluence pipe (32) at one end of the plate body (31) is connected to the liquid inlet header (4), and the confluence pipe (32) at the other end of the plate body (31) is connected to the liquid outlet header (5).

6. The vibration-proof gas-liquid heat exchanger according to claim 5, characterized in that, for any one heat exchange plate (3), the heat exchange plate (3) has a first side wall (34) and a second side wall (35). The heat exchange plate (3) is arranged vertically, and the direction from the first side wall (34) to the second side wall (35) is parallel to and coplanar with the vertical direction.

7. The vibration-proof gas-liquid heat exchanger according to claim 6, characterized in that, for any two adjacent heat exchange plates (3), the second side wall (35) of the heat exchange plate (3) located above is directly opposite to the first side wall (34) of the heat exchange plate (3) located below.

8. The vibration-proof gas-liquid heat exchanger according to claim 1, characterized in that, An air inlet part (11) is arranged at the upper end of the gas header tank (1). One end of the air inlet part (11) is provided with an air inlet (12), and the other end is connected to the gas header tank (1). A flow guide member (13) is arranged in the air inlet part (11).

9. A vibration-proof gas-liquid heat exchanger according to claim 1, characterized in that One end of the liquid inlet header tank (4) is provided with a liquid inlet pipe (41), and the other end is connected to the side wall of the gas header tank (1); one end of the liquid outlet header tank (5) is provided with a liquid outlet pipe (51), and the other end is connected to the side wall of the gas header tank (1).

10. A vibration-proof gas-liquid heat exchanger according to claim 1, characterized in that An anti-impulse cone (42) is arranged in the liquid inlet header tank (4), and the conical surface of the anti-impulse cone (42) faces the liquid inlet pipe (41).

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