Shell-and-tube heat exchanger
By incorporating a flow equalization plate, buffer, and flow diversion structure into the shell-and-shell heat exchanger, the problem of heat exchange tube wear caused by excessively high flow velocity of the heat exchange medium at the inlet is solved, achieving uniform distribution of the medium and improved heat exchange efficiency.
Patent Information
- Application Number
- CN202520231448.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2035-02-13
AI Technical Summary
In shell-and-shell heat exchangers, the heat exchange medium has a high flow velocity at the inlet, resulting in a large impact force that can easily cause wear and breakage of the heat exchange tubes.
A flow equalization plate is installed between the water inlet and the heat exchange tubes. The flow equalization plate has multiple water outlets, buffer and diversion sections to reduce the medium flow rate and distribute it evenly, preventing direct impact on the heat exchange tubes.
It effectively reduces the flow rate of the heat exchange medium, prevents damage to the heat exchange tubes, and improves the durability and heat exchange efficiency of the equipment.
Smart Images
Figure CN223580734U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of refrigeration system, in particular to a shell type heat exchanger. BACKGROUND
[0002] The shell type heat exchanger usually includes a shell, a heat exchange pipe penetrating the shell and a water inlet pipe and a water outlet pipe communicating with the chamber inside the shell, the heat exchange medium enters the chamber from the water inlet pipe, exchanges heat with the refrigerant in the heat exchange pipe, and the heat exchanged heat exchange medium flows out of the chamber from the water outlet pipe. However, the flow rate of the heat exchange medium is high when it just enters the chamber from the water inlet pipe, and the impact force is large, so the impact and vibration amplitude of the heat exchange pipe near the water inlet are relatively large, and problems such as wear and tear and rupture are prone to occur. SUMMARY
[0003] In view of the above technical problems, the utility model provides a shell type heat exchanger.
[0004] A shell type heat exchanger, comprising: a shell, a chamber is constructed in the shell, a water inlet and a water outlet are respectively arranged at two ends of the shell, and the water inlet and the water outlet are communicated with the chamber; a heat exchange pipe penetrating the shell and extending along the axial direction of the shell; a flow uniformizing plate connected with the shell and located between the heat exchange pipe and the water inlet, the extension direction of the axis of the pipe opening of the water inlet is the flow path of the heat exchange medium, the flow uniformizing plate extends into the flow path, a plurality of water passing openings are arranged on the flow uniformizing plate, the heat exchange medium can flow to the water outlet through the water passing openings, and the flow area of each water passing opening is the same. In this way, the heat exchange medium enters the chamber from the water inlet, contacts the heat exchange pipe penetrating the chamber, exchanges heat with the refrigerant in the heat exchange pipe, completes the heat exchange action, and the heat exchange medium flows out of the chamber from the water outlet, and the new heat exchange medium enters from the water inlet, and reciprocating circulation is realized. The flow uniformizing plate is located between the water inlet and the heat exchange pipe and extends into the flow path of the heat exchange medium, so that the heat exchange medium with high flow rate entering from the water inlet will impact on the flow uniformizing plate, the flow uniformizing plate can stop the heat exchange medium from directly impacting on the heat exchange pipe, offset the impact force, and reduce the flow rate. The plurality of water passing openings on the flow uniformizing plate can allow part of the heat exchange medium to pass through, and since the flow area of each water passing opening is the same, the flow amount of the heat exchange medium flowing through each water passing opening tends to be consistent, so the flow uniformizing plate can complete the liquid uniformizing action of the heat exchange medium, prevent the heat exchange medium from flowing too fast and impacting too large to cause the heat exchange pipe to be damaged.
[0005] In one of the embodiments, the flow uniformizing plate comprises a buffer section and a flow guiding section, the buffer section is located between the water inlet and the heat exchange pipe, and the flow guiding section is connected to the side surface of the buffer section.
[0006] In one of the embodiments, the buffer section is connected with the flow guide section on both sides in the width direction, and a plurality of water passing openings are arranged on the buffer section and the flow guide section.
[0007] In one of the embodiments, the water passing opening is arranged as a rectangular slot structure.
[0008] In one of the embodiments, the buffer section is recessed towards the direction away from the water inlet, the flow guide section extends towards the direction away from the buffer section and is bent in a circular arc shape towards the direction away from the water inlet.
[0009] In one of the embodiments, the circular arc radius of the flow guide section is r, the shell is arranged as a cylindrical structure, and the inner diameter of the shell is R, and 0.7R≤r≤0.8R is satisfied.
[0010] In one of the embodiments, along the axial direction of the water inlet, the height of the flow guide section is H, and 0.6r≤H≤0.95r is satisfied.
[0011] In one of the embodiments, the diameter of the water inlet is D, and the width of the buffer section is L, and D≤L is satisfied.
[0012] In one of the embodiments, the water passing opening is arranged along the axial direction of the shell, and a plurality of the water passing openings are arranged uniformly along the length direction of the flow uniformizing plate, and the water passing openings and the heat exchange pipes are arranged alternately along the axial direction of the water inlet.
[0013] In one of the embodiments, the adjacent water passing openings are arranged in parallel, the heat exchange pipes are a plurality of and arranged in parallel, and the interval distance between the adjacent heat exchange pipes is the same as the interval distance between the water passing openings.
[0014] Compared with the prior art, the utility model discloses a flow uniformizing plate arranged between the heat exchange pipes of the water inlet, so that the heat exchange medium with high flow rate entering from the water inlet can impact on the flow uniformizing plate, the flow uniformizing plate can stop the heat exchange medium from directly impacting on the heat exchange pipe, offset the impact force, reduce the flow rate, and guide the flow direction, thereby completing the liquid uniformizing action on the heat exchange medium, preventing the heat exchange pipe from being damaged due to the too fast flow rate and too large impact of the heat exchange medium. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a structure perspective view of one of the embodiments of the shell type heat exchanger provided by the utility model;
[0016] Figure 2 It is another angle structure perspective view of one of the embodiments of the shell type heat exchanger provided by the utility model;
[0017] Figure 3 A perspective view of the current sharing plate provided by the utility model is shown in the figure.
[0018] Figure 4 A plan view of the current sharing plate provided by the utility model is shown in the figure.
[0019] Figure 5 A side view of the current sharing plate provided by the utility model is shown in the figure.
[0020] The meaning of each symbol in the figure is as follows:
[0021] 100, shell heat exchanger; 10, shell; 11, chamber; 12, water inlet; 13, water outlet; 14, water inlet pipe; 15, water outlet pipe; 20, current sharing plate; 21, buffer section; 22, drainage section; 23, water inlet; 30, heat exchange pipe. DETAILED DESCRIPTION
[0022] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below in conjunction with the drawings. In the following description, a large number of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the spirit of the present application, therefore the present application is not limited by the specific embodiments disclosed below.
[0023] It should be noted that when an organization is referred to as "fixed to" or "provided to" another organization, it can be directly on another organization or there can be a central organization. When an organization is considered to be "connected" to another organization, it can be directly connected to another organization or there can be a central organization. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the specification of the present application are only for the purpose of illustration, and do not indicate the only implementation.
[0024] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise specifically limited.
[0025] In the present application, unless specifically defined and limited otherwise, the first feature is "on", "under", "above" and "over" the second feature can be the first feature directly and the second feature contact, or the first feature and the second feature indirectly through the intermediate medium contact. Moreover, the first feature is "on", "above" and "over" the second feature can be the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature is "under", "below" and "under" the second feature can be the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is less than the second feature in horizontal height.
[0026] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more related listed items.
[0027] The utility model provides a kind of shell heat exchanger 100, flow equalizing plate 20 is arranged between water inlet 12 and heat exchange pipe 30, stop higher flow rate heat exchange medium entering from water inlet 12, so that heat exchange medium more evenly enters the chamber 11 in shell 10.
[0028] Please refer to Figures 1-2 , shell heat exchanger 100 includes shell 10, heat exchange pipe 30 and flow equalizing plate 20, chamber 11 is structured in shell 10, the both ends of shell 10 are provided with water inlet 12 and water outlet 13 respectively, water inlet 12 and water outlet 13 are communicated with chamber 11;Heat exchange pipe 30 is arranged in shell 10, and extends along the axial direction of shell 10;Flow equalizing plate 20 is connected with shell 10, and is located between heat exchange pipe 30 and water inlet 12, the extension direction of the axis of the pipe of water inlet 12 is the flow path of heat exchange medium, flow equalizing plate 20 extends to flow path, a plurality of water passageways 23 are formed in flow equalizing plate 20, heat exchange medium can flow to water outlet 13 by water passageway 23, the flow area of each water passageway 23 is same.
[0029] Thus, the heat exchange medium enters the chamber 11 from the water inlet 12, contacts the heat exchange pipe 30 arranged in the chamber 11, exchanges heat with the refrigerant in the heat exchange pipe 30, completes the heat exchange action, and the heat exchange medium after heat exchange flows out of the chamber 11 from the water outlet 13, and new heat exchange medium enters from the water inlet 12 again, and reciprocating circulation. The flow distribution plate 20 is located between the water inlet 12 and the heat exchange pipe 30 and extends into the flow path of the heat exchange medium, so that the heat exchange medium with high flow rate entering from the water inlet 12 will impact on the flow distribution plate 20, the flow distribution plate 20 can stop the heat exchange medium from directly impacting on the heat exchange pipe 30, offset the impact force, and reduce the flow rate. The plurality of water passing openings 23 on the flow distribution plate 20 can allow part of the heat exchange medium to pass through, and since the flow passage areas of the water passing openings 23 are the same, the flow passage amounts of the heat exchange medium flowing through the water passing openings 23 tend to be consistent, thereby completing the liquid distribution action on the heat exchange medium, preventing the heat exchange pipe 30 from being damaged due to too fast flow rate and too large impact of the heat exchange medium.
[0030] Specifically, in the present embodiment, the heat exchange medium is cooling water.
[0031] Exemplarily, the water passing opening 23 is provided in a rectangular slot structure to improve the stopping effect of the flow distribution plate 20 on the heat exchange medium. The rectangular opening can throttle the heat exchange medium, further improving the flow distribution effect.
[0032] The shell 10 is connected with a water inlet pipe 14 and a water outlet pipe 15. The water inlet pipe 14 is connected to the outer wall of the shell 10 and communicates with the water inlet 12, and the water outlet pipe 15 is also connected to the outer wall of the shell 10 and communicates with the water outlet 13. The heat exchange medium enters the chamber 11 through the water inlet pipe 14 and the water inlet 12, and then flows out of the chamber 11 through the water outlet 13 and the water outlet pipe 15.
[0033] Further, referring to Figures 3-5 , the flow distribution plate 20 includes a buffer section 21 and a flow guiding section 22. The buffer section 21 is located between the water inlet 12 and the heat exchange pipe 30, and the flow guiding section 22 is connected to the side surface of the buffer section 21. Thus, the buffer section 21 is specially used for stopping the heat exchange medium with large initial velocity entering from the water inlet 12. After the heat exchange medium impacts on the buffer section 21, it will naturally escape to the surroundings, and the flow guiding section 22 can guide the flow direction of the heat exchange medium, reduce the turbulence of the heat exchange medium, and improve the uniformity of the heat exchange medium inside the chamber 11.
[0034] Specifically, the two sides of the buffer section 21 in the width direction are both connected with the flow guiding section 22, and a plurality of water passing openings 23 are arranged on the buffer section 21 and the flow guiding section 22. Thus, the two sides of the buffer section 21 are both provided with the flow guiding section 22, that is, the heat exchange medium can flow to both sides uniformly from the two sides of the buffer section 21, and can flow to the heat exchange pipe 30 through the water passing openings 23 on the buffer section 21 and the flow guiding section 22.
[0035] Of course, if there is a working requirement, for example, the heat exchange tubes 30 on one side of the shell 10 are more than the other side, then the buffer section 21 can also be provided with a drainage section 22 on one side only, guiding more heat exchange medium to the side of the heat exchange tubes 30, thereby improving the corresponding heat exchange efficiency.
[0036] Preferably, the buffer section 21 is recessed towards the direction away from the water inlet 12. In this way, the space for the heat exchange medium to buffer into the chamber 11 can be increased, thereby reducing the impact force borne by the flow uniformizing plate 20, so that the durability of the flow uniformizing plate 20 is improved. Moreover, compared with the flat plate structure of the flow uniformizing plate 20, the arc-shaped flow uniformizing plate 20 can also bear a larger load.
[0037] Understandably, in other embodiments, according to the working requirement, the buffer section 21 can also be convex towards the direction of the water inlet 12, thereby enhancing its ability to disperse the water flow (heat exchange medium), so that the heat exchange medium is more likely to flow to both sides.
[0038] Further, the drainage section 22 extends towards the direction away from the buffer section 21, and is bent in a circular arc shape towards the direction away from the water inlet 12. In this way, the circular arc structure has a more smooth guiding effect on the heat exchange medium, which can further reduce the turbulence of the heat exchange medium, so that the heat exchange medium in the chamber 11 is more uniform.
[0039] Still further, the circular arc radius of the drainage section 22 is r, the shell 10 is provided in a cylindrical structure, and the inner diameter of the shell 10 is R, satisfying 0.7R≤r≤0.8R. In this way, the circular arc radius of the drainage section 22 approaches the inner wall of the shell 10, which not only ensures that the distance between the drainage section 22 and the inner wall of the shell 10 can have a smooth guiding effect, but also prevents the gap between the drainage section 22 and the inner wall of the shell 10 from being too small, so that the heat exchange medium cannot flow smoothly, causing turbulence.
[0040] Exemplarily, the inner diameter of the shell 10 is set to 0.73R, 0.75R or 0.79R, etc., without being limited to the two end point values mentioned above.
[0041] At the same time, along the axial direction of the water inlet 12, the height of the drainage section 22 is H, satisfying 0.6r≤H≤0.95r. In this way, the occupied space of the drainage section 22 in the chamber 11 is reasonably set, so that it can achieve sufficient guiding effect while not occupying too much space and interfering with the flow of the heat exchange medium.
[0042] Exemplarily, the height H of the drainage section 22 is set to 0.7r, 0.88r or 0.9r, etc., without being limited to the two end point values mentioned above.
[0043] The buffer section 21 has a length direction along the axial direction of the shell 10 and a width direction perpendicular to the length direction; the diameter of the water inlet 12 is D, and the width of the buffer section 21 is L, and D≤L is satisfied. In this way, it can be ensured that the heat exchange medium with a relatively fast flow rate entering from the water inlet 12 will all be washed on the buffer section 21, ensuring the stopping effect of the buffer section 21 on the water flow.
[0044] The water passing hole 23 is opened along the axial direction of the shell 10 and along the length direction of the flow uniformizing plate 20, a plurality of water passing holes 23 are uniformly arranged in intervals, and along the axial direction of the water inlet 12, the water passing holes 23 and the heat exchange pipes 30 are staggered. In this way, the cooling water passing through the water passing hole 23 can contact and exchange heat with at least two heat exchange pipes 30, thereby improving the heat exchange efficiency. At the same time, it can also avoid that the heat exchange medium with a relatively fast flow rate passing through the water passing hole 23 and not being stopped directly washes on the heat exchange pipe 30, causing the heat exchange pipe 30 to vibrate.
[0045] Staggered arrangement means that along the axial direction of the water inlet 12, the projection of the water passing hole 23 in this direction and the projection of the heat exchange pipe 30 in this direction do not coincide, but are staggered and do not overlap.
[0046] It needs to be explained that in the embodiment, since the two flow guide sections 22 are connected to the two sides of the buffer section 21, and the flow guide section 22 and the buffer section 21 jointly constitute the flow uniformizing plate 20, the length direction of the flow uniformizing plate 20 refers to the direction from one flow guide section 22 to the other flow guide section 22 through the buffer section 21. For the flow uniformizing plate 20, this direction is its length direction, and for the buffer section 21, the axial direction of the shell 10 is its length direction. That is to say, in the embodiment, the length direction of the buffer section 21 is the width direction of the flow uniformizing plate 20.
[0047] Preferably, adjacent water passing holes 23 are arranged in parallel, the heat exchange pipes 30 are a plurality of and arranged in parallel, and the interval distance between adjacent heat exchange pipes 30 is the same as the interval distance between water passing holes 23. Therefore, along the axial direction of the water inlet 12, each heat exchange pipe 30 is staggered with a water passing hole 23 to maximize the heat exchange efficiency.
[0048] Compared with the prior art, the utility model discloses a flow uniformizing plate 20 arranged between the heat exchange pipes 30 of the water inlet 12, so that the heat exchange medium with a relatively high flow rate entering from the water inlet 12 will impact on the flow uniformizing plate 20, the flow uniformizing plate 20 can stop the heat exchange medium from directly impacting on the heat exchange pipe 30, offset the impact force, and reduce the flow rate, and guide the flow direction, thereby completing the liquid uniformizing action on the heat exchange medium, preventing the heat exchange medium from being too fast and impacting too large to cause the heat exchange pipe 30 to be damaged.
[0049] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, as long as the combination of the technical features does not exist in contradiction, it shall be considered as within the scope of the present disclosure.
[0050] The above-described embodiments only express several implementation manners of the present application, the description is relatively specific and detailed, but it shall not be understood as a limitation on the scope of the present application patent. It should be pointed out that, for ordinary skilled in the art, under the premise of not departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent shall be subject to the appended claims.
Claims
1. A shell-and-shell heat exchanger, characterized in that, include: The shell (10) has a chamber (11) inside. The two ends of the shell (10) are respectively provided with a water inlet (12) and a water outlet (13), and the water inlet (12) and the water outlet (13) are connected to the chamber (11). A heat exchange tube (30) is inserted through the housing (10) and extends along the axial direction of the housing (10); A flow equalization plate (20) is connected to the shell (10) and located between the heat exchange tube (30) and the inlet (12). The extension direction of the axis of the inlet (12) is the flow path of the heat exchange medium. The flow equalization plate (20) extends into the flow path. Multiple water passages (23) are provided on the flow equalization plate (20). The heat exchange medium can flow to the outlet (13) through the water passages (23). The flow area of each water passage (23) is the same.
2. The shell-and-shell heat exchanger according to claim 1, characterized in that, The flow equalization plate (20) includes a buffer section (21) and a flow guiding section (22). The buffer section (21) is located between the water inlet (12) and the heat exchange tube (30), and the flow guiding section (22) is connected to the side of the buffer section (21).
3. The shell-and-shell heat exchanger according to claim 2, characterized in that, The buffer section (21) is connected to the flow diversion section (22) on both sides in the width direction, and the buffer section (21) and the flow diversion section (22) are provided with a plurality of water inlets (23).
4. The shell-and-shell heat exchanger according to claim 3, characterized in that, The water inlet (23) is configured as a rectangular slotted structure.
5. The shell-and-shell heat exchanger according to claim 2, characterized in that, The buffer section (21) is recessed in the direction away from the inlet (12), and the drainage section (22) extends in the direction away from the buffer section (21) and bends in an arc shape in the direction away from the inlet (12).
6. The shell-and-shell heat exchanger according to claim 5, characterized in that, The radius of the arc of the drainage section (22) is r, the shell (10) is set as a cylindrical structure, and the inner diameter of the shell (10) is R, satisfying 0.7R≤r≤0.8R.
7. The shell-and-shell heat exchanger according to claim 6, characterized in that, Along the axial direction of the inlet (12), the height of the diversion section (22) is H, where H satisfies: 0.6r ≤ H ≤ 0.95r.
8. The shell-and-shell heat exchanger according to any one of claims 2-7, characterized in that, The diameter of the inlet (12) is D, and the width of the buffer section (21) is L, satisfying: D≤L.
9. The shell-and-shell heat exchanger according to claim 1, characterized in that, The water inlet (23) is opened along the axial direction of the shell (10), and a plurality of water inlets (23) are evenly spaced along the length direction of the flow equalization plate (20), and the water inlets (23) and the heat exchange tube (30) are staggered along the axial direction of the water inlet (12).
10. The shell-and-shell heat exchanger according to claim 9, characterized in that, The adjacent water inlets (23) are arranged in parallel, and the heat exchange tubes (30) are multiple and arranged in parallel. The interval between adjacent heat exchange tubes (30) is the same as the interval between the water inlets (23).