Heat exchange plate, heat exchange plate pair, heat exchange plate bundle and heat exchanger
By setting up the cleaning port and the second medium flow tract port on the long side of the heat -changing plate, the problem of wide channel welding plate heat exchangers in high -solid and high -sticking applications in high -solid and adhesive. , A better cleaning effect and service life.
Patent Information
- Application Number
- CN202420856856.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-23
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-04-23
AI Technical Summary
In the application of high solid content and high viscosity media, the second medium runner is difficult to clean, which affects the operation and maintenance and service life of the heat exchanger.
Design a heat exchanger, its long side is equipped with a second -like protruding along the length direction, and the second protruding has a gap, including the cleaning port setting and the second medium flow tract port. These cleaning ports can be cleaned in areas other than the entrance and export of the second medium runner.
By setting the cleaning port, the overall cleaning of the second medium flow tract is realized, which improves the service life and maintenance convenience of the heat exchanger, and is suitable for high -solid and high -stick agency working conditions.
Smart Images
Figure CN222393423U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of heat exchange technology, and in particular to a heat exchange plate, a heat exchange plate pair, a heat exchange plate bundle and a heat exchanger. Background Art
[0002] Wide channel welded plate heat exchanger is a heat exchanger composed of a series of flat or corrugated plates welded together to form heat exchange plate pairs, which are stacked and welded in a certain order to form heat exchange plate bundles, and combined with the welding and assembly of frame components. A second medium flow channel is formed inside the heat exchange plate pairs, and a first medium flow channel is formed between the heat exchange plate pairs. The flow channels on both sides are alternately spaced to form hot and cold flow channels to achieve heat exchange between hot and cold media. Compared with gasket-type plate heat exchangers, wide channel welded plate heat exchangers have wider medium flow channels and larger welding point spacing on both sides, making them more suitable for applications in high solid content media conditions, such as in the fuel ethanol and alumina industries. In recent years, they have been gradually promoted and applied in large quantities.
[0003] For wide channel welded plate heat exchangers, the current product structures are all plate-side welding structures. For the heat exchange area, pressed circular sockets are usually used for plate-to-plate welding, or welding spacing columns are used to weld and fix the plates. Both methods cause evenly spaced welding point obstacles to exist in the second medium flow channel, and the inlet and outlet of the second medium flow channel are arranged on the diagonal side or the same long side of the heat exchange plate. For heat exchange situations where both sides of the heat exchange plate are high-solid media, especially high-solid and high-viscosity media, such as high-viscosity mash and mash heat exchange situations in the fuel ethanol industry, it will make the second medium flow channel difficult to clean, affecting the operation and maintenance of the heat exchanger and reducing the service life. Therefore, there is an urgent need for a heat exchange plate that is easy to clean and maintain. Utility Model Content
[0004] In view of this, the purpose of the present application is to propose a heat exchange plate, a heat exchange plate pair, a heat exchange plate bundle and a heat exchanger to solve the related problems mentioned in the background technology.
[0005] Based on the above purpose, the present application provides a heat exchange plate, including: a plate body, the short side of the plate body is provided with a first strip-shaped protrusion along the width direction, the long side of the plate body is provided with a second strip-shaped protrusion along the length direction, the first strip-shaped protrusion and the second strip-shaped protrusion are used for welding connection between heat exchange plates; the second strip-shaped protrusion is provided with a notch, the notch includes a cleaning port and a second medium flow channel port arranged at intervals, the second medium flow channel port is located at the end of the second strip-shaped protrusion; the edge of the second strip-shaped protrusion is provided with a folded edge, and the folded edge is used for welding connection between heat exchange plate pairs.
[0006] Furthermore, two to six cleaning ports are disposed on both long sides of the plate body, and the cleaning ports located on the same long side of the plate body are spaced apart from each other.
[0007] Further, on the same long side of the plate body, the spacing between the cleaning port and the second medium flow channel port is a first spacing, the spacing between two adjacent cleaning ports is a second spacing, and the first spacing is equal to the second spacing.
[0008] Furthermore, the height of the cleaning port is equal to the height of the second medium flow channel port, and the length of the cleaning port is equal to 0.5 times to 2 times the length of the second medium flow channel port.
[0009] Furthermore, an orthographic projection of the notch on one long side of the plate body on another long side of the plate body partially overlaps with the notch on the other long side.
[0010] In a second aspect of the present application, a heat exchange plate pair is provided, comprising two heat exchange plates as described in the first aspect above arranged opposite to each other, the first strip-shaped protrusions of the two heat exchange plates being welded and connected, and the second strip-shaped protrusions of the two heat exchange plates being welded and connected, to form a second medium flow channel between the two heat exchange plates.
[0011] In a third aspect of the present application, a heat exchange plate bundle is provided, comprising a plurality of stacked heat exchange plate pairs as described in the second aspect above, wherein the folded edges of two adjacent heat exchange plate pairs are welded to form a first medium flow channel between the two adjacent heat exchange plate pairs.
[0012] In a fourth aspect of the present application, a heat exchanger is provided, comprising a frame, wherein the heat exchange plate bundle as described in the third aspect is arranged in the frame.
[0013] Furthermore, a cleaning pipe box and a guide pipe box are provided in the frame. The guide pipe box is provided corresponding to the first strip protrusion and the second medium flow channel port, and the cleaning pipe box is provided corresponding to the cleaning port.
[0014] Furthermore, the cleaning pipe box comprises a square flange, and the square flange is detachably connected with a blind plate.
[0015] From the above, it can be seen that the heat exchange plate, heat exchange plate pair, heat exchange plate bundle and heat exchanger provided by the present application, the heat exchange plate comprises: a plate body, the short side of the plate body is provided with a first strip-shaped protrusion along the width direction, the long side of the plate body is provided with a second strip-shaped protrusion along the length direction, the first strip-shaped protrusion and the second strip-shaped protrusion are used for welding connection between the heat exchange plates; a notch is provided on the second strip-shaped protrusion, the notch comprises a cleaning port and a second medium flow channel port arranged at intervals, the second medium flow channel port is located at the end of the second strip-shaped protrusion, and by setting the cleaning port, the second medium flow channel can also be cleaned and maintained in the area other than the inlet and outlet, thereby improving the service life; a folded edge is provided on the edge of the second strip-shaped protrusion, and the folded edge is used for welding connection between the heat exchange plate pair; the heat exchange plate, heat exchange plate pair, heat exchange plate bundle and heat exchanger have simple structures, are easy to manufacture, are easy to clean, have a long service life and a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 This is a schematic diagram of the structure of a heat exchange plate in an embodiment of the present application;
[0018] Figure 2 for Figure 1 Schematic diagram of the cross-sectional structure along the AA direction;
[0019] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure along the BB direction;
[0020] Figure 4 This is a schematic diagram of a three-dimensional structure of a heat exchanger in an embodiment of the present application;
[0021] Figure 5 for Figure 4 Top view of the heat exchanger.
[0022] Figure numerals: 1, plate body; 2, first strip-shaped protrusion; 3, second strip-shaped protrusion; 3-1, folded edge; 4, notch; 4-1, cleaning port; 4-2, second medium flow channel port; 5, heat exchange plate bundle; 6, frame; 7, cleaning pipe box; 7-1, square flange; 7-2, blind plate; 8, guide pipe box. DETAILED DESCRIPTION
[0023] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.
[0024] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be understood by people with ordinary skills in the field to which the present disclosure belongs. "First", "second" and similar words used in the present disclosure do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0025] Wide channel welded plate heat exchanger is a heat exchanger composed of a series of flat or corrugated plates welded together to form heat exchange plate pairs, which are stacked and welded in a certain order to form heat exchange plate bundles, and combined with the welding and assembly of frame components. A second medium flow channel is formed inside the heat exchange plate pairs, and a first medium flow channel is formed between the heat exchange plate pairs. The flow channels on both sides are alternately spaced to form hot and cold flow channels to achieve heat exchange between hot and cold media. Compared with gasket-type plate heat exchangers, wide channel welded plate heat exchangers have wider medium flow channels and larger welding point spacing on both sides, making them more suitable for applications in high solid content media conditions, such as in the fuel ethanol and alumina industries. In recent years, they have been gradually promoted and applied in large quantities.
[0026] For wide channel welded plate heat exchangers, the current product structures are all plate-side welding structures. For the heat exchange area, pressed circular sockets are usually used for plate-to-plate welding, or welding distance columns are used to weld and fix the plates. Both methods cause evenly spaced welding point obstacles to exist in the second medium flow channel, and the inlet and outlet of the second medium flow channel are arranged on the diagonal side of the heat exchange plate or on the same long side. For heat exchange situations where both sides of the heat exchange plate are high-solid media, especially high-solid and high-viscosity media, such as high-viscosity mash and mash heat exchange situations in the fuel ethanol industry, it will make the second medium flow channel difficult to clean, and only a very short distance between the inlet and outlet can be cleaned. The operation and maintenance of the heat exchanger are affected, the service life is reduced, and the promotion and use of the product in such working conditions is restricted. Therefore, a heat exchange plate that is easy to clean and maintain is urgently needed.
[0027] Below, through specific embodiments and in combination with the attached Figures 1 to 5 The technical solution of this application is further described in detail.
[0028] In some embodiments of the present application, a heat exchange plate is provided, such as Figures 1 to 3 As shown, it includes: a plate body 1, the short side of the plate body 1 is provided with a first strip-shaped protrusion 2 along the width direction, the long side of the plate body 1 is provided with a second strip-shaped protrusion 3 along the length direction, the first strip-shaped protrusion 2 and the second strip-shaped protrusion 3 are used for welding connection between heat exchange plates; a notch 4 is provided on the second strip-shaped protrusion 3, the notch 4 includes a cleaning port 4-1 and a second medium flow channel port 4-2 arranged at intervals, and the second medium flow channel port 4-2 is located at the end of the second strip-shaped protrusion 3; the edge of the second strip-shaped protrusion 3 is provided with a folded edge 3-1, and the folded edge 3-1 is used for welding connection between heat exchange plate pairs.
[0029] like Figure 1 As shown, the L direction is the length direction of the plate body 1, and the W direction is the width direction of the plate body 1. The plate body 1 is rectangular in shape, and the material is, for example, stainless steel, which is not specifically limited, and is used for fluid heat exchange.
[0030] The short side of the plate body 1 is provided with a first strip-shaped protrusion 2 along the W direction, and the first strip-shaped protrusion 2 is a port of the first medium flow channel. The combination of the first strip-shaped protrusions 2 of the two heat exchange plates between adjacent heat exchange plate pairs can form a complete inlet and outlet of the first medium flow channel. The first medium is, for example, a fluid containing solid particles and fibrous impurities such as an alumina solution, and is not specifically limited.
[0031] The long side of the plate body 1 is provided with a second strip-shaped protrusion 3 along the L direction, and the end of the second strip-shaped protrusion 3 is provided with a second medium flow channel port 4-2. The second medium flow channel ports 4-2 of the two heat exchange plates can be combined to form a complete inlet and outlet of the second medium flow channel; the number of second medium flow channel ports 4-2 on one heat exchange plate is two, which are distributed along the diagonal of the first plate body 1 or are arranged on the same long side. The second medium is, for example, a fluid containing solid particles and fibrous impurities such as an aluminum oxide solution, and is not specifically limited.
[0032] The first strip-shaped protrusion 2 and the second strip-shaped protrusion 3 are used for welding connection between the heat exchange plates; Figure 2 and Figure 3 As shown, the edge of the second strip-shaped protrusion 3 is provided with a folded edge 3-1, and the folded edge 3-1 is used for welding connection between the heat exchange plate pairs.
[0033] like Figure 1As shown, a cleaning port 4-1 is also provided on the second strip-shaped protrusion 3, and the cleaning port 4-1 is spaced apart from the second medium flow channel port 4-2. The cleaning port 4-1 is used to clean the area outside the second medium flow channel port 4-2, thereby achieving overall cleaning of the second medium flow channel, ensuring efficient operation of the equipment, and preventing excessive resistance caused by blockage and local blockage, resulting in waste of operating energy, solving the problem of mechanical cleaning of wide channel welded plate heat exchangers in high solid content and high viscosity media applications, and improving the service life of the product.
[0034] The heat exchange plate has a simple structure, is easy to manufacture, is easy to clean, has a long service life, and has a wide range of applications.
[0035] In some embodiments, Figure 1 As shown, two to six cleaning ports 4 - 1 are disposed on each of the two long sides of the plate body 1 , and the cleaning ports 4 - 1 located on the same long side of the plate body 1 are spaced apart from each other.
[0036] By arranging the cleaning ports 4 - 1 on both sides of the plate body 1 , impurities in the plate body 1 flushed from the cleaning port 4 - 1 on one side can flow out from the cleaning port 4 - 1 on the opposite side, ensuring flushing and cleaning of a large area of the plate body 1 .
[0037] The number of cleaning ports 4-1 on one side is 2 to 6, for example 2, 3, 4, 5 or 6, without specific limitation, to avoid too many cleaning ports 4-1, which will increase the cost and reduce the strength of the plate body 1, and to avoid too few cleaning ports 4-1, which will cause cleaning inconvenience and fail to effectively clean the entire plate body 1.
[0038] In some embodiments, Figure 1 As shown, on the same long side of the plate body 1, the spacing between the cleaning port 4-1 and the second medium flow channel port 4-2 is a first spacing, the spacing between two adjacent cleaning ports 4-1 is a second spacing, and the first spacing is equal to the second spacing.
[0039] like Figure 1 As shown, D1 is the first spacing, D2 is the second spacing, and D1=D2 is set to ensure the structural stability and cleaning effect of the heat exchange plate.
[0040] In some embodiments, the height of the cleaning port 4 - 1 is equal to the height of the second medium flow channel port 4 - 2 , and the length of the cleaning port 4 - 1 is equal to 0.5 to 2 times the length of the second medium flow channel port 4 - 2 .
[0041] The height of the cleaning port 4-1 is equal to the height of the second medium flow channel port 4-2 to avoid blocking the cleaning and ensure the cleaning effect; the length of the cleaning port 4-1 is equal to 0.5-2 times the length of the second medium flow channel port 4-2, for example, 0.5, 1, 1.5 or 2 times, without specific limitation, to avoid the cleaning port 4-1 being too short, resulting in poor cleaning effect, and to avoid the cleaning port 4-1 being too long, reducing the strength of the plate body 1.
[0042] In some embodiments, Figure 1 As shown, the orthographic projection of the notch 4 on one long side of the plate body 1 on the other long side of the plate body 1 partially overlaps with the notch 4 on the other long side.
[0043] like Figure 1 As shown in the figure, α is the radiation angle of flushing and cleaning through the cleaning port 4-1. The smaller the radiation angle, the longer the flushing distance, the more unfavorable it is for cleaning. The radiation angle can be set to be greater than or equal to 45° to ensure the cleaning effect; the notch 4 includes a cleaning port 4-1 and a second medium flow channel port 4-2. By setting the notches 4 on both sides of the plate body 1 to partially overlap each other, it can ensure that the radiation angle is larger, thereby ensuring the cleaning effect.
[0044] In some embodiments of the present application, a heat exchange plate pair is provided, comprising two heat exchange plates as described in any of the above embodiments arranged opposite to each other, the first strip-shaped protrusions 2 of the two heat exchange plates are welded and connected, and the second strip-shaped protrusions 3 of the two heat exchange plates are welded and connected, so that a second medium flow channel is formed between the two heat exchange plates.
[0045] In some embodiments of the present application, a heat exchange plate bundle 5 is provided, comprising a plurality of stacked heat exchange plate pairs as described in any of the above embodiments, wherein the folded edges 3-1 of two adjacent heat exchange plate pairs are welded and connected to form a first medium flow channel between the two adjacent heat exchange plate pairs.
[0046] In some embodiments of the present application, a heat exchanger is provided, such as Figure 4 and Figure 5 As shown, it includes a frame 6, in which a heat exchange plate bundle 5 as described in any of the above embodiments is arranged.
[0047] The heat exchanger has a simple structure, is easy to clean, has a good heat exchange effect and a long service life.
[0048] In some embodiments, Figure 4 and Figure 5 As shown, a cleaning pipe box 7 and a guide pipe box 8 are provided in the frame 6. The guide pipe box 8 is provided corresponding to the first strip protrusion 2 and the second medium flow channel port 4-2, and the cleaning pipe box 7 is provided corresponding to the cleaning port 4-1.
[0049] The guide pipe box 8 is arranged in the frame 6 and can be welded to the heat exchange plate bundle 5. The shape is, for example, semi-cylindrical or rectangular. The guide pipe box 8 is connected to the flow channel port of the heat exchange plate bundle 5 to provide space for fluid flow distribution.
[0050] The cleaning pipe box 7 is arranged in the frame 6, corresponding to the cleaning port 4-1. Figure 4 As shown, the cleaning pipe box 7 includes a square flange 7-1, and the square flange 7-1 is connected to a detachable blind plate 7-2, so that the heat exchanger can be cleaned after the blind plate 7-2 is removed, and the heat exchanger can work normally after the blind plate 7-2 is installed. A baffle and a sealing strip can be set between the blind plate 7-2 and the heat exchange plate bundle 5 to prevent leakage.
[0051] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. In line with the concept of the present application, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present application as described above, which are not provided in detail for the sake of simplicity.
[0052] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims
1. A heat exchange plate, characterized in that: It comprises: a plate body, wherein the short side of the plate body is provided with a first strip-shaped protrusion along the width direction, and the long side of the plate body is provided with a second strip-shaped protrusion along the length direction, and the first strip-shaped protrusion and the second strip-shaped protrusion are used for welding connection between heat exchange plates; A notch is provided on the second strip-shaped protrusion, and the notch includes a cleaning port and a second medium flow channel port arranged at intervals, and the second medium flow channel port is located at the end of the second strip-shaped protrusion; a folded edge is provided on the edge of the second strip-shaped protrusion, and the folded edge is used for welding connection between the heat exchange plate pairs.
2. The heat exchange plate according to claim 1, characterized in that: Two to six cleaning ports are disposed on each of the two long sides of the plate body, and the cleaning ports located on the same long side of the plate body are spaced apart from each other.
3. The heat exchange plate according to claim 2, characterized in that: On the same long side of the plate body, the distance between the cleaning port and the second medium flow channel port is a first distance, the distance between two adjacent cleaning ports is a second distance, and the first distance is equal to the second distance.
4. The heat exchange plate according to claim 2, characterized in that: The height of the cleaning port is equal to the height of the second medium flow channel port, and the length of the cleaning port is equal to 0.5 times to 2 times the length of the second medium flow channel port.
5. The heat exchange plate according to claim 2, characterized in that: The orthographic projection of the notch of one long side of the plate body on the other long side of the plate body partially overlaps with the notch of the other long side.
6. A heat exchange plate pair, characterized in that: It comprises two heat exchange plates as claimed in any one of claims 1 to 5 arranged opposite to each other, the first strip-shaped protrusions of the two heat exchange plates are welded and connected, and the second strip-shaped protrusions of the two heat exchange plates are welded and connected, so as to form a second medium flow channel between the two heat exchange plates.
7. A heat exchange plate bundle, characterized in that: The heat exchange plate pairs as claimed in claim 6 are stacked together, wherein the folded edges of two adjacent heat exchange plate pairs are welded and connected to form a first medium flow channel between the two adjacent heat exchange plate pairs.
8. A heat exchanger, characterized in that: It comprises a frame, in which the heat exchange plate bundle as claimed in claim 7 is arranged.
9. The heat exchanger according to claim 8, characterized in that A cleaning pipe box and a flow guide pipe box are arranged in the frame. The flow guide pipe box is arranged corresponding to the first strip protrusion and the second medium flow channel port, and the cleaning pipe box is arranged corresponding to the cleaning port.
10. The heat exchanger according to claim 9, characterized in that The cleaning pipe box comprises a square flange, and a blind plate is detachably connected to the square flange.