A plate heat exchanger

Abstract

The utility model relates to a plate heat exchanger, including fixed plate, heat exchange sheet, movable plate, support assembly, clamping bolt, angle hole and ground foot, through having set up the edge distance adjusting structure, personnel according to different medium exchange required, through the adjustment of the inclination angle of the inclined arm, control the pull -apart distance between the carrier plate, and heat exchange sheet can therefore along the direction displacement of upper guide rod with the displacement of carrier plate, personnel can therefore control the pull -apart distance between heat exchange sheet, make the distance between convenient dismounting structure and upper guide rod minimization, make the maximum of the restraint force that heat exchange sheet received, thereby simple and convenient the dismounting of heat exchange sheet, improve the installation and the adjustment efficiency of heat exchange sheet.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically a plate heat exchanger. Background Technology

[0002] Heat exchange refers to the transfer of heat between two fluids, which is a unit operation in the heat transfer process. A heat exchanger is a container used to transfer heat between fluids at different temperatures. A plate heat exchanger consists of multiple sets of stamped corrugated thin plates, gaskets, frames and clamping bolts. The alternating plates form independent flow channels to achieve efficient heat exchange between hot and cold media.

[0003] Existing plate heat exchangers are mostly optimized by strengthening the bending strength of the heat exchange plates to reduce the risk of deformation and cracking of the mounting components. For example, Chinese utility model patent application number CN202421641656.7 discloses a plate heat exchanger, which includes: a core assembly with multiple sequentially connected sub-cores; a shell assembly with a receiving portion for placing the core assembly; and a mounting component with a groove for mounting the shell assembly. The structure of the mounting component is contoured relative to the shell assembly. The mounting component also has multiple mounting holes. Compared with the plate-like structure of the substrate in the prior art, the bending strength of the edge of this mounting component is effectively enhanced, thereby reducing the risk of deformation and cracking of the mounting component. In addition, the contoured design of this mounting component with the shell assembly optimizes the contour around the mounting holes, thereby effectively reducing the weight of the mounting component and improving the structural consistency of the heat exchanger.

[0004] While the aforementioned plate heat exchanger has certain advantages in enhancing the bending strength of the heat exchange plates and reducing the risk of deformation and cracking of the mounting components, it still has some drawbacks: during the installation of the heat exchange plates, since multiple heat exchange plates need to be installed, the support frame has a uniform height, and the heat exchange plates have different specifications, if the height difference between the heat exchange plate and the support frame is large, loosening and tilting may occur during installation. If the height of the heat exchange plate is close to the height of the support frame, installation will be difficult, making the installation of the heat exchange plates cumbersome and inconvenient for personnel to frequently maintain and replace the heat exchange plates. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] To solve the above-mentioned technical problems, this utility model provides a plate heat exchanger.

[0007] (II) Technical Solution

[0008] Based on this, the present invention provides the following technical solution: a plate heat exchanger, comprising a fixed plate, heat exchange plates, a movable plate, a support assembly, clamping bolts, corner holes, and anchor bolts. The corner holes are integrally formed with the fixed plate and are connected through it. The heat exchange plates are installed between the fixed plate and the movable plate. The upper and lower ends of the movable plate are slidably connected to the upper and lower ends of the support assembly, respectively. The clamping bolts pass through the sides of the fixed plate and the movable plate and are bolted together. The anchor bolts are installed at the bottom of the fixed plate.

[0009] Preferably, the support assembly includes a rear support plate, an upper guide rod, a height adjustment structure, and a convenient disassembly and assembly structure. The rear end of the upper guide rod is welded to the upper end of the rear support plate, the rear end of the height adjustment structure is welded to the lower end of the rear support plate, the convenient disassembly and assembly structure is slidably fitted above the height adjustment structure, the convenient disassembly and assembly structure is in contact with the lower end of the heat exchange plate, the upper guide rod is in contact with the upper end of the heat exchange plate, and the upper guide rod and the height adjustment structure are slidably fitted with the upper and lower ends of the movable plate, respectively.

[0010] Preferably, the height adjustment structure includes a roller, a base plate, a serrated plate, a gear, a dual-axis motor, and a lower guide rod. The roller is rotatably connected to the upper part of the base plate via a rotating shaft. The upper end of the serrated plate is fixedly connected to the lower end face of the base plate. The gear is arranged in front of and behind the serrated plate and meshes with it. The gear is connected to the output end of the dual-axis motor. The dual-axis motor is installed in the lower guide rod. The base plate is movable above the lower guide rod.

[0011] Preferably, the convenient assembly and disassembly structure includes a carrier plate, a side distance adjustment structure, and a connecting groove. The connecting groove is an integral structure with the carrier plate and is located on its side. The side end of the side distance adjustment structure is inserted into the connecting groove to engage with the carrier plate.

[0012] Preferably, the edge adjustment structure includes a tilting arm, a plug-in block, a rotating column, a push-pull handle, and a limiting block. The front end of the push-pull handle is fixedly connected to the end of the rotating column. The push-pull handle passes through the interior of the tilting arm and is interference-fitted. The end of the plug-in block is embedded and fixedly connected to the front end of the rotating column. The limiting block and the plug-in block are an integrated structure and are disposed on the outer periphery of the plug-in block.

[0013] Preferably, the end of the lower guide rod is welded to the lower end of the rear support plate, the roller is rotatably connected to the lower middle position inside the easy-to-assemble and disassemble structure via a rotating shaft, the base plate is connected to the lower part of the easy-to-assemble and disassemble structure via the roller, and two serrated plates and two gears are provided. The serrated plates can be raised and lowered under the meshing of the gears, so that the base plate drives the easy-to-assemble and disassemble structure to be raised and lowered, allowing the easy-to-assemble and disassemble structure to be adapted to heat exchange plates of more heights.

[0014] Preferably, the bottom of the carrier plate is slidably connected to the base plate via rollers, and the upper surface of the carrier plate is arc-shaped, which facilitates the placement of the heat exchange plates and provides bottom support.

[0015] Preferably, the tilting arm gap is located on the side of the carrier plate, the rotating column penetrates into the interior of the connecting groove and is interference-fitted, and the plug-in block is movably engaged with the connecting groove by a limiting block.

[0016] Preferably, the diameter of the rotating column is greater than the width of the push-pull handle passing through the interior of the inclined arm. When the push-pull handle is pushed or pulled, the rotating column will cause the plug block to be pulled away from the connecting groove by a certain distance. The rotating column is not completely separated from the connecting groove and is in an interference fit with the connecting groove. The diameter of the plug block is smaller than the diameter of the rotating column. The structure of the plug block and the limiting block allows the plug block to be engaged into the connecting groove after being pushed by the push-pull handle and the rotating column, and it will not change direction.

[0017] Preferably, the heat exchange plates can be made of SUS304, SUS316L, 254SMO, titanium, nickel, or Hastelloy, and the heat exchange plates are designed with a corrugated surface (such as herringbone or spherical) to increase turbulence. The heat transfer coefficient is 3-5 times higher than that of shell and tube type. The corrugated structure breaks the laminar boundary layer of the fluid, and the heat transfer efficiency is 40%-60% higher than that of plain plate. The sealing gaskets that match the heat exchange plates can be made of NBR, EPDM, food-grade gaskets, fluororubber, or silicone rubber.

[0018] Preferably, the clamping bolts are made of galvanized carbon steel or stainless steel.

[0019] Preferably, the upper guide rod is made of galvanized carbon steel or stainless steel.

[0020] Preferably, the hot and cold fluids can achieve a near temperature difference of 1℃-3℃, which is suitable for high-energy-efficiency scenarios such as waste heat recovery.

[0021] (III) Beneficial Effects

[0022] Compared with the prior art, this utility model provides a plate heat exchanger with the following advantages:

[0023] 1. This type of plate heat exchanger, before performing alternating heat exchange operations, features a convenient disassembly and assembly structure. By pushing the convenient disassembly and assembly structure upwards through the base plate, the distance between the carrier plate and the upper guide rod is gradually reduced, thereby strengthening and tightening the upper and lower ends of the heat exchange plates to prevent the heat exchange plates from becoming loose and tilting.

[0024] 2. This type of plate heat exchanger, by setting up a side distance adjustment structure, allows personnel to control the separation distance between the carrier plates by adjusting the tilt angle of the tilting arm according to different media exchange requirements. As a result, the heat exchange plates can move along the direction of the upper guide rod as the carrier plates move, thus allowing personnel to control the separation distance between the heat exchange plates. This minimizes the distance between the easy-to-disassemble structure and the upper guide rod, and maximizes the restraining force on the heat exchange plates, thereby simplifying and facilitating the disassembly and assembly of the heat exchange plates and improving the installation and adjustment efficiency of the heat exchange plates. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the support component of this utility model;

[0027] Figure 3 This is a schematic diagram of the height adjustment structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the convenient assembly and disassembly structure of this utility model;

[0029] Figure 5 This is a schematic diagram of the connecting groove of this utility model;

[0030] Figure 6 This is a schematic diagram of the edge distance adjustment structure of this utility model.

[0031] In the diagram: Fixed plate-1, heat exchange plate-2, movable plate-3, support assembly-4, clamping bolt-5, corner hole-6, foot-mounted anchor-7, rear support plate-41, upper guide rod-42, height adjustment structure-43, convenient disassembly and assembly structure-44, rolling wheel-q1, base plate-q2, serrated plate-q3, gear-q4, dual-axis motor-q5, lower guide rod-q6, carrier plate-a1, edge distance adjustment structure-a2, connecting groove-a3, tilting arm-a21, plug-in block-a22, rotating column-a23, push-pull handle-a24, limit block-a25. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] Please see Figure 1-2A plate heat exchanger includes a fixed plate 1, heat exchange plates 2, a movable plate 3, a support assembly 4, clamping bolts 5, corner holes 6, and foot anchors 7. The corner holes 6 are integral with the fixed plate 1 and are through-holes. The heat exchange plates 2 are installed between the fixed plate 1 and the movable plate 3. The upper and lower ends of the movable plate 3 are slidably connected to the upper and lower ends of the support assembly 4, respectively. The clamping bolts 5 pass through the sides of the fixed plate 1 and the movable plate 3 and are bolted together. The foot anchors 7 are bolted to the bottom of the fixed plate 1. The support assembly 4 includes a rear support plate 41, an upper guide rod 42, a height adjustment structure 43, and a convenient disassembly and assembly structure 44. The rear end of the upper guide rod 42 is welded to the upper end of the rear support plate 41. The rear end of the height adjustment structure 43 is welded to the lower end of the rear support plate 41. The convenient disassembly and assembly structure 44 is slidably fitted above the height adjustment structure 43. The convenient disassembly and assembly structure 44 is connected to the heat exchange plates 2. The lower end of the upper guide rod 42 is in contact with the upper end of the heat exchange plate 2. The upper guide rod 42 and the height adjustment structure 43 are slidably engaged with the upper and lower ends of the movable plate 3 respectively. The heat exchange plate 2 can be made of SUS304, SUS316L, 254SMO, titanium, nickel, or Hastelloy. The heat exchange plate 2 is designed with a corrugated surface (such as herringbone or spherical) to increase turbulence. The heat transfer coefficient is 3-5 times higher than that of shell and tube type. The corrugated structure destroys the laminar boundary layer of the fluid, and the heat transfer efficiency is 40%-60% higher than that of plain plate. The sealing gasket matched with the heat exchange plate 2 can be made of NBR, EPDM, food-grade gasket, fluororubber, or silicone rubber. The clamping bolt 5 is made of galvanized carbon steel or stainless steel. The upper guide rod 42 is made of galvanized carbon steel or stainless steel. The hot and cold fluids can achieve a close temperature difference of 1℃-3℃, which is suitable for high-efficiency scenarios such as waste heat recovery.

[0034] Please see Figure 3-5A plate heat exchanger includes a height adjustment structure 43 comprising a roller q1, a base plate q2, a serrated plate q3, a gear q4, a dual-shaft motor q5, and a lower guide rod q6. The roller q1 is rotatably connected to the base plate q2 at a position slightly above the middle of the base plate q2 via a rotating shaft. The upper end of the serrated plate q3 is fixedly connected to the lower end face of the base plate q2. The gear q4 is arranged in a front-to-back manner with the serrated plate q3 and meshes with it. The gear q4 is connected to the output end of the dual-shaft motor q5, which is installed in the lower guide rod q6. The base plate q2 is movable above the lower guide rod q6. A convenient disassembly and assembly structure 44 includes a carrier plate a1, a side distance adjustment structure a2, and a connecting groove a3. The connecting groove a3 is an integral structure with the carrier plate a1 and is located on its side. The side end of the side distance adjustment structure a2 is connected by a through-hole... The lower guide rod q6 is welded to the lower end of the rear support plate 41 through the connecting groove a3. The roller q1 is rotatably connected to the lower part of the easy-to-assemble structure 44 through the rotating shaft. The bottom plate q2 is connected to the lower part of the easy-to-assemble structure 44 through the roller q1. There are two serrated plates q3 and two gears q4. The serrated plates q3 can be raised and lowered under the meshing of the gears q4, so that the bottom plate q2 drives the easy-to-assemble structure 44 to be raised and lowered, so that the easy-to-assemble structure 44 can be adapted to heat exchange plates 2 of greater height. The bottom of the carrier plate a1 is slidably connected to the bottom plate q2 through the roller q1. The upper surface of the carrier plate a1 is arc-shaped, which facilitates the placement of the heat exchange plates 2 and the bottom support.

[0035] Please see Figure 6 A plate heat exchanger includes a side-distance adjustment structure a2 comprising an inclined arm a21, a plug-in block a22, a rotating column a23, a push-pull handle a24, and a limiting block a25. The front end of the push-pull handle a24 is fixedly connected to the end of the rotating column a23. The push-pull handle a24 passes through the interior of the inclined arm a21 and is interference-fitted. The end of the plug-in block a22 is embedded in the front end of the rotating column a23. The limiting block a25 is an integral structure with the plug-in block a22 and is located on the outer periphery of the plug-in block a22. The inclined arm a21 is positioned beside the carrier plate a1. The rotating column a23 passes through the interior of the connecting groove a3 and is interference-fitted. The plug-in block a21... 2. The limiting block a25 is engaged with the connecting groove a3. The diameter of the rotating column a23 is greater than the width of the push-pull handle a24 passing through the inside of the tilting arm a21. When the push-pull handle a24 is pushed or pulled, the rotating column a23 will drive the plug block a22 to be pulled away from the connecting groove a3 by a certain distance. The rotating column a23 is not completely separated from the connecting groove a3 and is in an interference fit with the connecting groove a3. The diameter of the plug block a22 is smaller than the diameter of the rotating column a23. The structure of the plug block a22 and the limiting block a25 allows the plug block a22 to be engaged into the connecting groove a3 after being pushed by the push-pull handle a24 and the rotating column a23, and there will be no change in direction.

[0036] In summary, before the plate heat exchanger undergoes alternating heat exchange operations, personnel first assemble the device, select suitable heat exchange plates 2, and, based on the height specifications of the heat exchange plates 2, slightly adjust the position of the easy-to-disassemble structure 44 so that the height between the easy-to-disassemble structure 44 and the upper guide rod 42 is greater than the height of the heat exchange plates 2. This facilitates the placement of the heat exchange plates 2 onto the support assembly 4. By setting up the easy-to-disassemble structure 44, the lower end of the heat exchange plates 2 rests on the carrier plate a1, and the upper end of the heat exchange plates 2 contacts the upper guide rod 42. After placing a sufficient number of heat exchange plates 2, the dual-shaft motor q5 is started, driving the gear q4 to rotate, causing the gear... The serrated plate q3, which meshes with wheel q4, moves upward. The base plate q2 pushes the easy-to-disassemble structure 44 upward, gradually reducing the distance between the carrier plate a1 and the upper guide rod 42. This strengthens the upper and lower ends of the heat exchange plate 2, preventing it from loosening and tilting. With the edge distance adjustment structure a2, personnel can adjust the tilt angle of the tilting arm a21 according to different media exchange requirements, controlling the separation distance between the carrier plates a1. Pulling the push-pull handle a24 outward causes the insertion block a22 to be pulled a certain distance from the inside of the connecting groove a3, while the rotating column a23 does not completely detach from the connecting groove a3 and remains interference-fitted with it. The rotation mechanism assists in tilting the tilting arm a21. After the tilting angle of the tilting arm a21 is adjusted, the operator presses the push-pull handle a24, causing the plug block a22 to engage with the connecting groove a3. The limiting block a25 engages with the anti-offset groove in the connecting groove a3, preventing the auxiliary rotating column a23 from changing direction. This fixes the tilting angle of the tilting arm a21. The carrier plate a1 can move on the base plate q2 with the help of the roller q1. Therefore, the heat exchange plates 2 can move along the direction of the upper guide rod 42 as the carrier plate a1 moves. The operator can then control the separation distance between the heat exchange plates 2. After the separation distance of the heat exchange plates 2 is adjusted, the operator... Re-engage the clamping bolt 5 to minimize the distance between the easy-to-disassemble structure 44 and the upper guide rod 42, maximizing the restraining force on the heat exchange plate 2. This simplifies and facilitates the disassembly and assembly of the heat exchange plate 2, improving the installation and adjustment efficiency of the heat exchange plate 2. Then, the personnel pass the clamping bolt 5 through the side ends of the movable plate 3 and the fixed plate 1. The heat exchange plate 2 is pressed by the movable plate 3 through the clamping bolt 5, strengthening the restraint of the heat exchange plate 2 and facilitating subsequent flexible adjustment of the heat exchange area. The hot and cold media enter from the corner holes 6 respectively, and flow alternately through the parallel flow channels formed by adjacent heat exchange plates 2, completing the heat transfer through countercurrent or cocurrent flow.

[0037] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0038] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art. The power supply is also common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and circuit connection will not be explained in detail.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A plate heat exchanger, characterized in that: The assembly includes a fixed plate (1), heat exchange plates (2), a movable plate (3), a support assembly (4), clamping bolts (5), corner holes (6), and foot anchors (7). The corner holes (6) are integrated with the fixed plate (1) and are connected through it. The heat exchange plates (2) are installed between the fixed plate (1) and the movable plate (3). The upper and lower ends of the movable plate (3) are slidably connected to the upper and lower ends of the support assembly (4), respectively. The clamping bolts (5) pass through the sides of the fixed plate (1) and the movable plate (3) and are bolted together. The foot anchors (7) are bolted to the bottom of the fixed plate (1). The support assembly (4) includes a rear support plate (41), an upper guide rod (42), a height adjustment structure (43), and a convenient disassembly and assembly structure (44). The rear end of the upper guide rod (42) is welded to the upper end of the rear support plate (41), and the rear end of the height adjustment structure (43) is welded to the lower end of the rear support plate (41). The convenient disassembly and assembly structure (44) is slidably fitted above the height adjustment structure (43). The convenient disassembly and assembly structure (44) is in contact with the lower end of the heat exchange plate (2), and the upper guide rod (42) is in contact with the upper end of the heat exchange plate (2). The upper guide rod (42) and the height adjustment structure (43) are slidably fitted with the upper and lower ends of the movable plate (3), respectively.

2. A plate heat exchanger according to claim 1, characterized in that: The height adjustment structure (43) includes a roller (q1), a base plate (q2), a serrated plate (q3), a gear (q4), a dual-axis motor (q5), and a lower guide rod (q6). The roller (q1) is rotatably connected to the upper part of the center of the base plate (q2) via a rotating shaft. The upper end of the serrated plate (q3) is fixedly connected to the lower end face of the base plate (q2). The gear (q4) is arranged in front and behind the serrated plate (q3) and meshes with it. The gear (q4) is connected to the output end of the dual-axis motor (q5). The dual-axis motor (q5) is installed in the lower guide rod (q6). The base plate (q2) is movable above the lower guide rod (q6).

3. A plate heat exchanger according to claim 1, characterized in that: The convenient disassembly and assembly structure (44) includes a carrier plate (a1), a side distance adjustment structure (a2), and a connecting groove (a3). The connecting groove (a3) ​​is an integral structure with the carrier plate (a1) and is located on its side. The side end of the side distance adjustment structure (a2) is inserted into the carrier plate (a1) through the connecting groove (a3).

4. A plate heat exchanger according to claim 3, characterized in that: The edge adjustment structure (a2) includes an inclined arm (a21), a plug-in block (a22), a rotating column (a23), a push-pull handle (a24), and a limiting block (a25). The front end of the push-pull handle (a24) is fixedly connected to the end of the rotating column (a23). The push-pull handle (a24) passes through the interior of the inclined arm (a21) and is interference-fitted. The end of the plug-in block (a22) is embedded and fixedly connected to the front end of the rotating column (a23). The limiting block (a25) and the plug-in block (a22) are an integrated structure and are located on the outer periphery of the plug-in block (a22).

5. A plate heat exchanger according to claim 2, characterized in that: The end of the lower guide rod (q6) is welded to the lower end of the rear support plate (41). The roller (q1) is rotatably connected to the lower part of the middle of the easy-to-assemble structure (44) through a rotating shaft. The bottom plate (q2) is connected to the lower part of the easy-to-assemble structure (44) through the roller (q1).

6. A plate heat exchanger according to claim 3, characterized in that: The bottom of the carrier plate (a1) is slidably connected to the base plate (q2) via a roller (q1), and the upper surface of the carrier plate (a1) is arc-shaped.

7. A plate heat exchanger according to claim 4, characterized in that: The tilting arm (a21) is positioned on the side of the carrier plate (a1), the rotating column (a23) penetrates into the interior of the connecting groove (a3) ​​and is interference-fitted, and the plug-in block (a22) is movably engaged with the connecting groove (a3) ​​through the limiting block (a25).

8. A plate heat exchanger according to claim 4, characterized in that: The diameter of the rotating post (a23) is greater than the width of the push-pull handle (a24) passing through the interior of the tilting arm (a21), and the diameter of the plug block (a22) is smaller than the diameter of the rotating post (a23).

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