Heat exchange tube

Abstract

The utility model belongs to heat exchange technical field, especially relates to a kind of heat exchange tube, it includes tube body, tube sheet, tube bundle and pipe box, tube sheet and tube body are constituted and are used for containing heat exchange medium heat exchange cavity;Tube bundle is set in heat exchange cavity, and both ends of tube bundle are all through tube sheet and extend to the outside of heat exchange cavity, and tube bundle is used to make injection liquid flow through heat exchange cavity, so that injection liquid and heat exchange medium carry out heat exchange;Pipe box is set in the end of tube bundle, and have the shunt cavity with one end of tube bundle communication and the convergence cavity with other end communication.Penetrate tube sheet both ends of tube bundle, and pipe box is set in the end of tube bundle, to be able to make certain gap between pipe box and tube sheet, to be able to avoid the heat exchange medium in heat exchange cavity interior by the connecting part of tube bundle and pipe box enter the interior of pipe box, to avoid heat exchange medium and injection liquid between mixing, further to be able to avoid injection liquid appear pollution.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange technology, and in particular to a heat exchange tube. Background Technology

[0002] Traditional heat exchange tubes consist of a tube body, tube sheet, tube bundle, and tube box. The tube body and tube sheet form a heat exchange cavity to contain the heat exchange medium. The tube box is directly fixed to the side of the tube sheet away from the tube body. The tube bundle is placed inside the heat exchange cavity, and both ends are connected to the tube box so that the injection liquid can flow from one end of the tube bundle to the other end and exchange heat with the heat exchange medium in the heat exchange cavity.

[0003] However, the heat exchange medium inside the heat exchange chamber can easily enter the tube box from the connection between the tube bundle and the tube box, causing the heat exchange medium to mix with the injection solution, which in turn leads to contamination of the injection solution.

[0004] Therefore, the above problems urgently need to be solved. Utility Model Content

[0005] The purpose of this invention is to provide a heat exchange tube to prevent the heat exchange medium from entering the inside of the tube box, thereby avoiding contamination of the injection solution.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Heat exchange tubes, which include:

[0008] tube body;

[0009] The tube sheet, together with the tube body, forms a heat exchange cavity for containing the heat exchange medium;

[0010] A tube bundle is disposed in the heat exchange chamber, and both ends of the tube bundle penetrate the tube sheet and extend to the outside of the heat exchange chamber. The tube bundle is used to allow the injection liquid to flow through the heat exchange chamber so that the injection liquid can exchange heat with the heat exchange medium.

[0011] A tube box is disposed at the end of the tube bundle and has a shunt chamber communicating with one end of the tube bundle and a collecting chamber communicating with the other end.

[0012] Preferably, the heat exchange tube further includes a fixing part, which is disposed in the heat exchange cavity and is used to fix the tube bundle so that the tube bundle is kept in a preset posture.

[0013] Preferably, the tube bundle includes a plurality of delivery tubes;

[0014] The fixing part includes:

[0015] At least two tie rods, one end of which is connected to the tube sheet, and the length direction of the tie rods is arranged along the length direction of the tube body;

[0016] Multiple fixing plates are spaced apart on the pull rod. Each fixing plate is provided with a fixing hole for the conveying pipe to pass through. The fixing hole is adapted to the shape of the conveying pipe, and the multiple fixing holes are provided in a one-to-one correspondence with the multiple conveying pipes.

[0017] Preferably, any of the conveying pipes is divided into an inlet pipe communicating with the diversion chamber and an outlet pipe communicating with the collection chamber. The inlet pipe and the outlet pipe are symmetrical about the axis of the pipe body and are arranged in a U-shape.

[0018] Along the axial direction of the pipe body, the fixing plate is alternately arranged on the inlet pipe and the outlet pipe.

[0019] Preferably, any of the fixing plates passes through the axis along the radial direction of the pipe body and is used to fix part of the inlet pipe or the outlet pipe.

[0020] Preferably, the tube body has a medium inlet communicating with the heat exchange cavity at one end near the tube sheet, and a medium outlet communicating with the heat exchange cavity at the other end away from the tube sheet. The medium inlet, the heat exchange cavity, and the medium outlet can form a conveying channel for conveying the heat exchange medium.

[0021] Preferably, the tube sheet is provided with a first connection hole for the tube bundle to pass through, and the first connection hole is connected to the tube bundle by laser welding or brazing.

[0022] Preferably, the heat exchange tube further includes a first fastener for detachably securing the tube sheet to the tube body.

[0023] Preferably, the heat exchange tube further includes:

[0024] A connecting plate is fixedly disposed at the end of the tube bundle, and the connecting plate is provided with a second connecting hole for connecting the tube bundle and the tube box;

[0025] The second fastener is used to detachably mount the pipe box to the connecting plate.

[0026] Preferably, the tube bundle can be inserted into the second connecting hole, and the end of the tube bundle is flush with the end of the second connecting hole facing the tube box, and the second connecting hole and the tube bundle are connected by laser welding or brazing.

[0027] The beneficial effects of this utility model are:

[0028] The heat exchange tube of this invention has both ends of the tube bundle passing through the tube sheet, and the tube box is set at the end of the tube bundle. This allows for a certain gap between the tube box and the tube sheet, thereby preventing the heat exchange medium inside the heat exchange chamber from entering the tube box through the connection between the tube bundle and the tube box. This also prevents the heat exchange medium from mixing with the injection liquid, thus avoiding contamination of the injection liquid. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the heat exchange tube in an embodiment of this utility model;

[0030] Figure 2 yes Figure 1 Sectional view at point AA;

[0031] Figure 3 yes Figure 1 Sectional view at point BB.

[0032] In the picture:

[0033] 1. Pipe body; 11. Medium inlet; 12. Medium outlet;

[0034] 2. Tube sheet;

[0035] 3. Tube bundle; 31. Inlet pipe; 32. Outlet pipe;

[0036] 4. Tube box; 41. Diversion chamber; 42. Collection chamber; 43. Solution inlet; 44. Solution outlet;

[0037] 5. Fixing part; 51. Fixing plate; 52. Tie rod;

[0038] 6. Connecting plate. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0040] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0043] Please see Figure 1 This embodiment proposes a heat exchange tube, which includes a tube body 1, a tube sheet 2, a tube bundle 3, and a tube box 4. The tube sheet 2 and the tube body 1 form a heat exchange cavity for containing the heat exchange medium. The tube bundle 3 is disposed in the heat exchange cavity, and both ends of the tube bundle 3 penetrate the tube sheet 2 and extend to the outside of the heat exchange cavity. The tube bundle 3 is used to allow the injection liquid to flow through the heat exchange cavity so that the injection liquid and the heat exchange medium can exchange heat. The tube box 4 is disposed at the end of the tube bundle 3 and has a diversion cavity 41 communicating with one end of the tube bundle 3 and a collection cavity 42 communicating with the other end.

[0044] It is understood that the tube bundle 3 includes multiple delivery tubes; one end of each delivery tube can be connected to the diversion chamber 41, and the other end can be connected to the collection chamber 42. The external injection liquid is delivered to the interior of the diversion chamber 41 through the solution inlet 43, and then enters different delivery tubes to divide the injection liquid into multiple branches and deliver it to the heat exchange chamber. During the flow process, it can exchange heat with the heat exchange medium inside the heat exchange chamber. The heat exchange medium can be a cold medium or a hot medium in the prior art to meet the need to cool or heat the injection liquid. Then, under the action of the tube bundle 3, the injection liquid can be delivered to the collection chamber 42 so that the multiple branches can be re-combined into one, and then output through the solution outlet 44 connected to the collection chamber 42. In this design, the two ends of the tube bundle 3 pass through the tube sheet 2, and the tube box 4 is placed at the end of the tube bundle 3. This allows for a certain gap between the tube box 4 and the tube sheet 2, thereby preventing the heat exchange medium inside the heat exchange chamber from entering the tube box 4 through the connection between the tube bundle 3 and the tube box 4. This also prevents the heat exchange medium from mixing with the injection liquid, thus avoiding contamination of the injection liquid.

[0045] In this embodiment, the heat exchange tube also includes a fixing part 5, which is disposed inside the heat exchange chamber and is used to fix the tube bundle 3 so that the tube bundle 3 is held in a preset posture. It can be understood that under the action of the fixing part 5, multiple delivery tubes can be fixed, thereby avoiding collisions and wear between multiple delivery tubes during the heat exchange process, and also preventing leakage caused by loosening at the connection between the tube bundle 3 and the tube box 4, thus improving safety performance. Specifically, the fixing part 5 includes at least two tie rods 52 and multiple fixing plates 51. One end of the at least two tie rods 52 is connected to the tube sheet 2, and the length direction of the tie rods 52 is arranged along the length direction of the tube body 1; multiple fixing plates 51 are spaced apart from the tie rods 52, and each fixing plate 51 is provided with a fixing hole for the delivery tube to pass through. The fixing hole is adapted to the shape of the delivery tube, and the multiple fixing holes are arranged one-to-one with the multiple delivery tubes. It is understood that multiple fixing plates 51 can be fixed to the tie rods 52 by welding or other fixing methods to ensure that the position of the fixing plates 51 does not change. Preferably, there are three tie rods 52, which are arranged in a triangle to ensure the stability of the fixing part 5. Each fixing plate 51 is provided with a fixing hole corresponding to the conveying pipe. For the same conveying pipe, the fixing holes on each fixing plate 51 are arranged opposite to each other. Then, multiple conveying pipes are inserted into the corresponding fixing holes. Under the action of the fixing holes, the distance between two adjacent conveying pipes can be kept unchanged, thereby ensuring that the tube bundle 3 is maintained in the preset posture.

[0046] Each delivery pipe is divided into an inlet pipe 31 connected to the diversion chamber 41 and an outlet pipe 32 connected to the collection chamber 42. The inlet pipe 31 and the outlet pipe 32 are symmetrical about the axis of the pipe body 1 and are arranged in a U-shape. The U-shaped arrangement of the delivery pipe can extend the flow path of the injection liquid in the heat exchange chamber, thereby further improving the heat exchange effect.

[0047] In this embodiment, the tube body 1 has a medium inlet 11 communicating with the heat exchange chamber at one end near the tube sheet 2, and a medium outlet 12 communicating with the heat exchange chamber at the other end away from the tube sheet 2. The medium inlet 11, the heat exchange chamber, and the medium outlet 12 constitute a conveying channel for conveying the heat exchange medium. It is understood that the heat exchange medium can circulate within the conveying channel through the medium inlet 11 and the medium outlet 12, maintaining the heat exchange medium at a preset temperature, thereby further improving the heat exchange effect of the heat exchange tube. The flow power of the heat exchange medium can be provided by a drive pump located outside the heat exchange tube, which will not be elaborated here.

[0048] Furthermore, along the axial direction of the tube body 1, fixing plates 51 are alternately arranged on the inlet pipe 31 and the outlet pipe 32. It is understood that multiple fixing plates 51 are arranged along the axial direction of the tube body 1, with the fixing plates 51 in odd-numbered positions used to fix the inlet pipe 31, and the fixing plates 51 in even-numbered positions used to fix the outlet pipe 32. Of course, in some other feasible embodiments, the fixing plates 51 in odd-numbered positions can also be used to fix the outlet pipe 32, and the fixing plates 51 in even-numbered positions can be used to fix the inlet pipe 31. No specific limitation is made here. This arrangement can further improve the stability of the fixing part 5 and enhance the fixing effect on the tube bundle 3. Moreover, the arrangement of the fixing plates 51 allows the portion of the conveying channel inside the tube body 1 to be arranged in an "S" shape, thereby increasing the flow time of the heat exchange medium inside the tube body 1, and thus further improving the heat exchange effect of the heat exchange tube.

[0049] Specifically, along the radial direction of the pipe body 1, any fixing plate 51 passes through the axis and is used to fix part of the inlet pipe 31 or the outlet pipe 32. This arrangement allows the inlet pipe 31 and part of the outlet pipe 32, or the outlet pipe 32 and part of the inlet pipe 31, to be connected to the same fixing plate 51, thereby preventing relative movement between the inlet pipe 31 and the outlet pipe 32 during heat exchange, and further improving the stability of the multiple delivery pipes.

[0050] In this embodiment, the tube sheet 2 is provided with first connecting holes for the tube bundle 3 to pass through. The first connecting holes and the tube bundle 3 are connected by laser welding or brazing. It can be understood that the number of first connecting holes is the same as the number of inlet pipes 31 and outlet pipes 32, and the inlet pipes 31 and outlet pipes 32 respectively pass through the corresponding first connecting holes, and are then connected by laser welding and brazing. Under the action of the welding material, the gap between the first connecting hole and the delivery pipe can be sealed, thereby preventing the heat exchange medium from leaking from the first connecting hole and further improving the safety performance.

[0051] Furthermore, the heat exchange tube also includes a first fastener, which is used to detachably fix the tube sheet 2 to the tube body 1. This arrangement facilitates the removal of the tube bundle 3 from the heat exchange chamber for maintenance and cleaning of the interior of the tube body 1. Specifically, in this embodiment, the tube sheet 2 includes a base plate with a first connection hole and a baffle protruding from the base plate. The baffle is annular and can form a mounting groove with the base plate for conforming to one end of the tube body 1. The tube body 1 can be inserted into the mounting groove to further prevent leakage of the heat exchange medium from the connection between the tube sheet 2 and the tube body 1. After the tube body 1 is inserted into the mounting groove, the tube body 1 and the tube sheet 2 are connected by the first fastener. The first fastener is preferably a clamp or similar device found in the prior art, and no specific limitation is made here.

[0052] In this embodiment, the heat exchange tube further includes a connecting plate 6 and a second fastener. The connecting plate 6 is fixedly disposed at the end of the tube bundle 3, and the connecting plate 6 is provided with a second connecting hole for connecting the tube bundle 3 and the tube box 4. The second fastener is used to detachably mount the tube box 4 onto the connecting plate 6. It is understood that the connecting plate 6 and the second fastener enable a detachable connection between the tube box 4 and the tube bundle 3, facilitating maintenance and replacement of the tube box 4. The specific structure of the connecting plate 6 is consistent with the specific structure of the tube sheet 2, and will not be described in detail here. The second fastener is preferably a clamp or similar device found in the prior art, and is not specifically limited here.

[0053] Furthermore, the tube bundle 3 can be inserted into the second connecting hole, with the end of the tube bundle 3 flush with the end of the second connecting hole facing the tube box 4. This facilitates confirmation of the installation accuracy of the connecting plate 6, thereby further preventing leakage caused by installation errors between the connecting plate 6 and the tube bundle 3, and thus improving safety performance. In addition, the second connecting hole and the tube bundle 3 are connected by laser welding or brazing. It is understood that using laser welding or brazing, under the action of the solder, can seal the gap between the second connecting hole and the conveying pipe, thereby preventing leakage of the heat exchange medium from the second connecting hole and further improving safety performance.

[0054] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A heat exchange tube, characterized in that, include: tube body(1); The tube sheet (2) and the tube body (1) together form a heat exchange cavity for containing the heat exchange medium; A tube bundle (3) is disposed in the heat exchange chamber, and both ends of the tube bundle (3) penetrate the tube sheet (2) and extend to the outside of the heat exchange chamber. The tube bundle (3) is used to allow the injection liquid to flow through the heat exchange chamber so that the injection liquid can exchange heat with the heat exchange medium. The tube box (4) is disposed at the end of the tube bundle (3) and has a diversion cavity (41) communicating with one end of the tube bundle (3) and a collection cavity (42) communicating with the other end.

2. The heat exchange tube according to claim 1, characterized in that, The heat exchange tube also includes a fixing part (5), which is disposed in the heat exchange cavity and is used to fix the tube bundle (3) so that the tube bundle (3) is kept in a preset posture.

3. The heat exchange tube according to claim 2, characterized in that, The tube bundle (3) includes multiple delivery tubes; The fixing part (5) includes: At least two tie rods (52) are connected at one end to the tube sheet (2), and the length direction of the tie rods (52) is arranged along the length direction of the tube body (1); Multiple fixing plates (51) are spaced apart on the pull rod (52). Each fixing plate (51) is provided with a fixing hole for the conveying pipe to pass through. The fixing hole is adapted to the shape of the conveying pipe, and the multiple fixing holes are provided one-to-one with the multiple conveying pipes.

4. The heat exchange tube according to claim 3, characterized in that, Each of the aforementioned delivery pipes is divided into an inlet pipe (31) that communicates with the diversion chamber (41) and an outlet pipe (32) that communicates with the collection chamber (42). The inlet pipe (31) and the outlet pipe (32) are symmetrical about the axis of the pipe body (1) and are arranged in a U-shape. Along the axial direction of the pipe body (1), the fixing plate (51) is alternately arranged on the inlet pipe (31) and the outlet pipe (32).

5. The heat exchange tube according to claim 4, characterized in that, Along the radial direction of the tube body (1), any of the fixing plates (51) passes through the axis and is used to fix part of the inlet pipe (31) or the outlet pipe (32).

6. The heat exchange tube according to claim 1, characterized in that, The tube body (1) has a medium inlet (11) connected to the heat exchange cavity at one end near the tube sheet (2), and a medium outlet (12) connected to the heat exchange cavity at the other end away from the tube sheet (2). The medium inlet (11), the heat exchange cavity and the medium outlet (12) can form a conveying channel for conveying the heat exchange medium.

7. The heat exchange tube according to claim 1, characterized in that, The tube sheet (2) is provided with a first connecting hole for the tube bundle (3) to pass through, and the first connecting hole is connected to the tube bundle (3) by laser welding or brazing.

8. The heat exchange tube according to claim 1, characterized in that, The heat exchange tube also includes a first fastener for detachably fixing the tube sheet (2) to the tube body (1).

9. The heat exchange tube according to claim 1, characterized in that, The heat exchange tube also includes: A connecting plate (6) is fixedly disposed at the end of the tube bundle (3), and the connecting plate (6) is provided with a second connecting hole for connecting the tube bundle (3) and the tube box (4); The second fastener is used to detachably mount the pipe box (4) to the connecting plate (6).

10. The heat exchange tube according to claim 9, characterized in that, The tube bundle (3) can be inserted into the second connecting hole, and the end of the tube bundle (3) is flush with the end of the second connecting hole facing the tube box (4), and the second connecting hole and the tube bundle (3) are connected by laser welding or brazing.

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