Improved heat exchange plate fixing structure for plate heat exchanger

Abstract

The utility model discloses an improved heat exchange plate fixing structure for a plate heat exchanger, which comprises a left clamping plate, a right clamping plate and a vertical plate, the left clamping plate and the right clamping plate are vertically arranged, more than two heat exchange plates are arranged between the left clamping plate and the right clamping plate, and an upper guide rod is fixedly arranged on the upper portion of the left clamping plate. A lower guide rod is fixedly arranged on the lower portion of the left clamping plate, the right end of the lower guide rod comprises a bent section, a notch is formed in the bottom of the right clamping plate, a limiting connecting piece is arranged between the left clamping plate and the right clamping plate, and an inverted-T-shaped clamping groove is formed in the top of each heat exchange plate. The utility model has the beneficial effects that: 1, the disassembly and assembly efficiency of the heat exchange plate is improved; 2, the space which needs to be reserved for inclination originally is optimized, and the space utilization rate is improved;

Description

Technical Field

[0001] This utility model relates to the field of machinery, and more particularly to plate heat exchangers, specifically an improved structure for fixing heat exchange plates in a plate heat exchanger. Background Technology

[0002] A plate heat exchanger is a highly efficient heat transfer device consisting of a series of corrugated heat exchange plates. These plates are arranged alternately to form two fluid channels, allowing heat exchange between two fluid streams without direct contact. Plate heat exchangers are characterized by high heat transfer efficiency, compact structure, small footprint, and ease of cleaning and maintenance. They are suitable for fluid heat exchange processes in many industrial fields, such as chemical engineering, food processing, refrigeration, and heating.

[0003] In existing technology, the upper and lower guide rods of plate heat exchangers are directly connected to the surrounding support structure, and their spacing cannot be adjusted. Therefore, this structure presents challenges when disassembling and assembling the heat exchange plates. Figure 1 As shown, the heat exchange plates need to be tilted at a certain angle, with the upper end of the heat exchange plates suspended on the upper guide rod, and the lower end aligned with the lower guide rod before being slowly pushed in. This method of disassembling and assembling heat exchange plates is inefficient and increases unnecessary friction between the lower guide rod and the heat exchange plates. In addition, when designing the length of the guide rod, an extra length needs to be reserved so that the heat exchange plates have enough space to be placed in an inclined state, but this length cannot be used to install the heat exchange plates. Utility Model Content

[0004] The purpose of this utility model is to provide an improved heat exchange plate fixing structure for plate heat exchangers. This improved heat exchange plate fixing structure for plate heat exchangers aims to solve the technical problems of low efficiency in heat exchange plate assembly and disassembly and easy friction during the assembly and disassembly process in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An improved plate fixing structure for a plate heat exchanger includes a vertically arranged left clamp, a right clamp, and a vertical plate. The left clamp, the right clamp, and the vertical plate are parallel to each other. The right clamp is located between the left clamp and the vertical plate. Two or more heat exchange plates are arranged between the left clamp and the right clamp. An upper guide rod is fixedly installed on the upper part of the left clamp. The upper guide rod extends from the left clamp to the right, passes through the right clamp, and extends to the left side of the vertical plate. The right end of the upper guide rod is fixedly connected to the left side of the vertical plate. The right clamp and the upper guide rod are configured as a sliding pair along the length of the upper guide rod. A lower guide rod is fixedly installed on the lower part of the left clamp. The left clamping plate passes through the right clamping plate to the right. The right end of the lower guide rod includes a bent section. The bent section bends downward at a right angle from the lower guide rod, then bends to the right parallel to the length of the lower guide rod and extends to the left side of the upright plate, where it is fixedly connected to the upright plate. The bottom of the right clamping plate has a notch, the height and width of which match the height and width of the bent section, respectively. A limiting connector is provided between the left and right clamping plates. The upper guide rod has an I-shaped cross-section. Each heat exchange plate has an inverted T-shaped slot at its top. The inverted T-shaped slot matches the cross-sectional shape of the upper guide rod. The heat exchange plate is suspended below the upper guide rod through the slot.

[0007] Furthermore, the number of limiting connectors is two or more, and each of the limiting connectors includes a limiting rod. The outer periphery of the left clamping plate is provided with two or more left limiting holes, and the outer periphery of the right clamping plate is provided with two or more right limiting holes. The two ends of each limiting rod pass through one of the left limiting holes and one of the right limiting holes, and the two ends of the limiting rod are provided with threads and nuts.

[0008] Furthermore, the lower guide rod has an inverted T-shaped cross-section, and the lower part of the heat exchange plate has a lower opening that mates with the lower guide rod.

[0009] Working principle:

[0010] After installation, the heat exchange plates have clamps on both the left and right sides for fixing, and guide rods on the top and bottom sides for fixing and guiding. There is a vertical plate on the right side of the heat exchange plates for fixing. This utility model changes the original straight connection between the right end of the lower guide rod and the vertical plate to a concave shape, thereby creating a larger space. The heat exchange plates can be directly inserted between the upper and lower guide rods in a vertically suspended manner, which improves the efficiency of heat exchange plate assembly and disassembly.

[0011] Compared with the prior art, the beneficial effects of this utility model are: 1. It improves the efficiency of heat exchange plate assembly and disassembly; 2. It optimizes the space that originally needed to be reserved for tilting, thus improving the space utilization rate. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the heat exchange plate disassembly and assembly method in the existing technology.

[0013] Figure 2 This is a schematic diagram of the heat exchange plate disassembly and assembly method in this utility model.

[0014] Figure 3 This is a schematic diagram of an improved plate fixing structure for a plate heat exchanger according to the present invention. Detailed Implementation

[0015] Example 1

[0016] Please see Figure 2 , Figure 3 This utility model provides a technical solution:

[0017] An improved plate fixing structure for a plate heat exchanger includes a vertically arranged left clamping plate 1, a right clamping plate 2, and a vertical plate 4. The left clamping plate 1, right clamping plate 2, and vertical plate 4 are parallel to each other. The right clamping plate 2 is located between the left clamping plate 1 and the vertical plate 4. Two or more heat exchange plates 3 are arranged between the left clamping plate 1 and the right clamping plate 2. An upper guide rod 5 is fixedly installed on the upper part of the left clamping plate 1. The upper guide rod 5 extends from the left clamping plate 1 to the right, passes through the right clamping plate 2, and extends to the left side of the vertical plate 4. The right end of the upper guide rod 5 is fixedly connected to the left side of the vertical plate 4. The right clamping plate 2 and the upper guide rod 5 are configured as a sliding pair along the length of the upper guide rod 5. A lower guide rod 6 is fixedly installed on the lower part of the left clamping plate 1. The lower guide rod 6 extends from the left clamping plate 1 to the right side of the vertical plate 4. Plate 1 passes through right clamping plate 2 to the right. The right end of the lower guide rod 6 includes a bent section 7. The bent section 7 bends downward at a right angle from the lower guide rod 6, then bends to the right parallel to the length direction of the lower guide rod 6 and extends to the left side of the upright plate 4, where it is fixedly connected to the upright plate 4. The bottom of the right clamping plate 2 is provided with a notch. The height and width of the notch match the height and width of the bent section 7, respectively. A limit connector is provided between the left clamping plate 1 and the right clamping plate 2. The cross-sectional shape of the upper guide rod 5 is I-shaped. Each heat exchange plate 3 has an inverted T-shaped slot at its top. The inverted T-shaped slot matches the cross-sectional shape of the upper guide rod 5. The heat exchange plate 3 is suspended on the lower side of the upper guide rod 5 through the slot.

[0018] Furthermore, the number of limiting connectors is two or more, and each limiting connector includes a limiting rod 8. The outer periphery of the left clamping plate 1 is provided with two or more left limiting holes 9, and the outer periphery of the right clamping plate 2 is provided with two or more right limiting holes 10. The two ends of any limiting rod 8 pass through a left limiting hole 9 and a right limiting hole 10 respectively, and the two ends of the limiting rod are provided with threads and nuts.

[0019] Furthermore, the lower guide rod 6 has an inverted T-shaped cross-section, and the lower part of the heat exchange plate 3 has a lower opening that mates with the lower guide rod 6.

[0020] Work process:

[0021] The limiting connector is used to fasten the left clamping plate 1 and the right clamping plate 2, while preventing the heat exchange plates 3 from falling off from the front and rear sides.

[0022] The right clamping plate 2 is connected to the left clamping plate 1 to clamp the heat exchange plate 3. Above the bent section 7, the upper part of the heat exchange plate 3 is connected to the upper guide rod 5 in a suspended manner, and then clamped on the right side by the right clamping plate 2. This allows for the maximum utilization of the guide rod length to install a larger number of heat exchange plates 3.

[0023] The bottom of the right clamping plate 2 is provided with an opening to avoid the space of the bending section 7, so as to avoid interference and conflict between the bottom of the right clamping plate 2 and the bending section 7 when there are many heat exchange plates 7 installed and the right clamping plate 2 is located above the bending section 7.

[0024] Taking the applicant's AC95 / PN16 model product as an example, without considering margin, using existing technology for the fixing structure, and using a 1500mm long guide rod, a 367mm long inclined space is required. The right clamping plate 2 is 55mm thick, the heat exchange plates 3 are 0.5mm thick, and the gaskets between the heat exchange plates 3 are 3.8mm thick. The calculated number of heat exchange plates that can be installed is as follows.

[0025] (1500-367-55) / (0.5+3.8)≈251 pieces.

[0026] With the fixing structure of this utility model, the 367mm pre-reserved slope is eliminated, and the number of plates that can be installed is (1500-55) / (0.5+3.8)≈336.

[0027] Similarly, assuming that the customer needs 200 heat exchange plates, the guide rod length required by the existing fixing structure is (0.5+3.8)X200+55+367=1282mm, rounded up to select a guide rod with a length of 1500mm. However, the guide rod length required by the fixing structure of this utility model is (0.5+3.8)X200+55=915mm, rounded up to select a guide rod with a length of 1200mm.

[0028] Compared with existing fixing structures, the fixing structure of this utility model can install more heat exchange plates using the same length of guide rod, thus improving efficiency; and can use shorter guide rods to reduce space occupancy when using the same number of heat exchange plates.

Claims

1. An improved plate fixing structure for a plate heat exchanger, characterized in that: The system includes a left clamping plate (1), a right clamping plate (2), and a vertical plate (4) that are set upright. The left clamping plate (1), the right clamping plate (2), and the vertical plate (4) are parallel to each other. The right clamping plate (2) is located between the left clamping plate (1) and the vertical plate (4). Two or more heat exchange plates (3) are arranged between the left clamping plate (1) and the right clamping plate (2). An upper guide rod (5) is fixedly arranged on the upper part of the left clamping plate (1). The upper guide rod (5) extends from the left clamping plate (1) to the right, passes through the right clamping plate (2), and extends to the left side of the vertical plate (4). The right end of the upper guide rod (5) is fixedly connected to the left side of the vertical plate (4). The right clamping plate (2) and the upper guide rod (5) are configured as a sliding pair along the length direction of the upper guide rod (5). A lower guide rod (6) is fixedly arranged on the lower part of the left clamping plate (1). Passing from the left clamping plate (1) to the right through the right clamping plate (2), the right end of the lower guide rod (6) includes a bent section (7). The bent section (7) bends downward at a right angle from the lower guide rod (6), then bends to the right parallel to the length direction of the lower guide rod (6) and extends to the left side of the upright plate (4) and is fixedly connected to the upright plate (4). The bottom of the right clamping plate (2) is provided with a notch. The height and width of the notch match the height and width of the bent section (7), respectively. A limit connector is provided between the left clamping plate (1) and the right clamping plate (2). The cross-sectional shape of the upper guide rod (5) is I-shaped. Each of the heat exchange plates (3) is provided with an inverted T-shaped slot at its top. The inverted T-shaped slot matches the cross-sectional shape of the upper guide rod (5). The heat exchange plates (3) are suspended on the lower side of the upper guide rod (5) through the slot.

2. The improved plate fixing structure for a plate heat exchanger according to claim 1, characterized in that: The number of limiting connectors is two or more, and each of the limiting connectors includes a limiting rod (8). The outer periphery of the left clamping plate (1) is provided with two or more left limiting holes (9), and the outer periphery of the right clamping plate (2) is provided with two or more right limiting holes (10). The two ends of each limiting rod (8) pass through one of the left limiting holes (9) and one of the right limiting holes (10), respectively. The two ends of the limiting rod (8) are provided with threads and nuts.

3. The improved plate fixing structure for a plate heat exchanger according to claim 1, characterized in that: The lower guide rod (6) has an inverted T-shaped cross section. The heat exchange plate (3) has a lower opening at its lower part, and the lower opening of the heat exchange plate (3) is engaged with the lower guide rod (6).

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