Symmetrical plate heat exchanger

Abstract

The utility model relates to the technical field of plate heat exchangers, in particular to a symmetrical plate heat exchanger which comprises a base and an auxiliary mechanism, a sealing groove is formed in the upper surface of the base, and the auxiliary mechanism is located at the bottom end of the sealing groove. The auxiliary mechanism comprises a sealing gasket, a spiral spring and a fixing bolt, the sealing gasket is fixedly installed at the bottom end of the interior of the sealing groove, and the size of the sealing gasket is matched with that of the sealing groove. The sealing washer, the spiral spring and the fixing bolt which are arranged in the sealing groove are matched with one another, when the pressure of fluid in the heat exchanger rises, the pressure acts on the sealing washer, so that the spiral spring at the bottom end of the sealing washer is compressed and deformed, and the elastic restoring force of the spiral spring can apply extra pressure to the sealing washer; therefore, the sealing tightening force between the sealing washer and the sealing groove and between the sealing washer and the plate is enhanced, the sealing effect is improved, the risk of fluid leakage is greatly reduced, and the stability of equipment operation is improved.

Description

Technical Field

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

[0002] Plate heat exchangers are high-efficiency heat exchangers composed of a series of corrugated metal plates stacked together. Thin rectangular channels are formed between the plates, allowing heat exchange to occur. Plate heat exchangers are ideal for liquid-liquid and liquid-vapor heat exchange, featuring high heat exchange efficiency, low heat loss, compact and lightweight structure, small footprint, wide application, and long service life. Under the same pressure loss conditions, their heat transfer coefficient is 3-5 times higher than that of tubular heat exchangers, their footprint is one-third that of tubular heat exchangers, and their heat recovery rate can reach over 90%. Currently, some heat exchangers suffer from uneven fluid distribution, leading to low heat dissipation efficiency in some areas and poor sealing performance causing fluid leakage.

[0003] As disclosed in the patent announcement CN212870858U, a symmetrical plate heat exchanger is described. This utility model relates to the field of heat exchanger technology. It includes a base plate with vertical plates fixedly installed on both sides of the top surface of the base plate. A fixed clamping plate is provided on the inner side of each vertical plate, with its bottom surface fixedly installed on the top surface of the base plate. A movable clamping plate is provided between the fixed clamping plate and the adjacent vertical plate. A screw hole is opened in the middle of one side of the movable clamping plate, and a through hole is opened in the middle of one side of the fixed clamping plate. This utility model has a reasonable structural design, is easy to use, shortens the transmission path of the heat exchange medium, improves the overall heat exchange efficiency of the heat exchanger, has a wider range of applications, and to a certain extent strengthens the restriction on the movable clamping plate, greatly preventing the movable clamping plate from sliding and thus loosening the heat exchange plates. The entire device is very easy to disassemble and install. However, while it solves the problem of convenient disassembly and installation, it does not effectively address issues such as low heat dissipation efficiency in some areas and fluid leakage due to poor sealing performance. Utility Model Content

[0004] The purpose of this invention is to provide a symmetrical plate heat exchanger to solve the problem mentioned in the background art of uneven fluid distribution in some heat exchangers, which leads to low heat dissipation efficiency in some areas and poor sealing performance resulting in fluid leakage.

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

[0006] A symmetrical plate heat exchanger includes a base and an auxiliary mechanism. A sealing groove is formed on the upper surface of the base, and the auxiliary mechanism is located at the bottom end of the sealing groove.

[0007] The auxiliary mechanism includes a sealing gasket, a helical spring, and a fixing bolt. A sealing gasket is fixedly installed at the bottom of the sealing groove, its size matching the sealing groove and fitting tightly against it. Helical springs are evenly fixed at the bottom of the sealing gasket, and fixing bolts are fixed at the bottom of each helical spring. A top plate is fixed at the top of each helical spring. The helical spring, under pressure, undergoes compression deformation, and its elastic restoring force applies additional pressure to the sealing gasket, thereby enhancing the sealing tightness between the gasket and the sealing groove and plate, improving the sealing effect, significantly reducing the risk of fluid leakage, and improving the stability of equipment operation.

[0008] Preferably, side plates are fixedly installed at both ends of the upper surface of the base, and crossbars are fixedly installed at the four corners of both ends of the side plates. The heat sink can be disassembled and installed by means of the crossbars at the four corners of the upper side plates.

[0009] Preferably, a flow divider plate is fixedly installed in the middle of the crossbar, and flow divider holes are evenly opened at both ends of the flow divider plate. By fixing the flow divider plate in the middle of the crossbar, the fluid entering the heat exchanger can be more evenly distributed to each heat exchange channel.

[0010] Preferably, a heat sink is fixedly connected to one end of the flow divider plate, and an inlet is opened at the other end of the heat sink away from the flow divider plate. The inlet is located at one end of the side plate, and fluid can easily enter through the inlet opened on one side of the heat sink plate.

[0011] Preferably, a second heat dissipation plate is fixedly connected to the other end of the flow divider plate, and an outlet is opened at the other end of the heat dissipation plate away from the flow divider plate. The outlet is located at the other end of the side plate. Heat dissipation plate one and heat dissipation plate two are fixedly connected to both ends of the heat exchange plate, thereby increasing the heat dissipation area and improving the heat dissipation effect.

[0012] Preferably, a pressure sensor is fixedly installed at the bottom of the inner part of the first heat sink and the second heat sink. The pressure sensor is electrically connected to an elastic element, which is mounted on a helical spring. The pressure sensor can detect the pressure change of the fluid inside the heat exchanger in real time, and the elastic element can react according to the signal transmitted by the pressure sensor, thereby reducing the risk of fluid leakage.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This symmetrical plate heat exchanger utilizes a combination of a sealing gasket, a helical spring, and fixing bolts within a sealing groove. When the internal fluid pressure increases, the pressure acts on the sealing gasket, causing the helical spring at the bottom of the gasket to compress and deform. The elastic restoring force of the helical spring applies additional pressure to the sealing gasket, thereby enhancing the sealing tightness between the sealing gasket and the sealing groove and plates. This improves the sealing effect, significantly reduces the risk of fluid leakage, and enhances the stability of equipment operation.

[0015] This symmetrical plate heat exchanger features a flow divider plate fixedly installed between the side plates at both ends of the upper surface of the base and in the middle of the crossbar. This facilitates a more even distribution of the fluid entering the heat exchanger into each heat exchange channel, avoiding localized low heat exchange efficiency caused by uneven fluid distribution, improving overall heat exchange efficiency, and enabling more thorough heat exchange between hot and cold fluids. This meets various heat exchange needs and enhances practicality. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a frontal cross-sectional view of the present invention.

[0018] Figure 3 This is a schematic cross-sectional view of the sealing groove of this utility model.

[0019] Figure 4 This is a schematic diagram of the overall structure of the diverter plate of this utility model.

[0020] In the diagram: 1. Base; 2. Auxiliary mechanism; 201. Sealing gasket; 202. Helical spring; 203. Fixing bolt; 204. Top plate; 3. Sealing groove; 4. Side plate; 5. Crossbar; 6. Diverter plate; 7. Diverter hole; 8. Heat sink one; 9. Inlet; 10. Heat sink two; 11. Outlet; 12. Pressure sensor; 13. Elastic element. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-4 As shown, this utility model provides a technical solution:

[0023] A symmetrical plate heat exchanger includes a base 1 and an auxiliary mechanism 2. A sealing groove 3 is provided on the upper surface of the base 1, and the auxiliary mechanism 2 is located at the bottom end of the sealing groove 3.

[0024] Auxiliary mechanism 2 includes a sealing gasket 201, a coil spring 202, and a fixing bolt 203. The sealing gasket 201 is fixedly installed at the bottom of the sealing groove 3. The size of the sealing gasket 201 is adapted to the sealing groove 3, and the sealing gasket 201 fits tightly against the sealing groove 3. The coil spring 202 is evenly fixed at the bottom of the sealing gasket 201, and the fixing bolt 203 is fixed at the bottom of the coil spring 202. The top plate 204 is fixed at the top of the coil spring 202. Due to the compression deformation of the coil spring 202 under pressure, the elastic restoring force of the coil spring 202 will apply additional pressure to the sealing gasket 201, thereby enhancing the sealing tightness between the sealing gasket 201 and the sealing groove 3 and the plate, improving the sealing effect, greatly reducing the risk of fluid leakage, and improving the stability of equipment operation.

[0025] In this embodiment, preferably, side plates 4 are fixedly installed at both ends of the upper surface of the base 1, and crossbars 5 are fixedly installed at the four corners of both ends of the side plates 4. The heat sink can be disassembled and installed by means of the crossbars 5 at the four corners of the upper part of the side plates 4.

[0026] In this embodiment, preferably, a flow divider 6 is fixedly installed in the middle of the crossbar 5, and flow divider holes 7 are evenly opened at both ends of the flow divider 6. By fixing the flow divider 6 in the middle of the crossbar 5, the fluid entering the heat exchanger can be more evenly distributed to each heat exchange channel.

[0027] In this embodiment, preferably, a heat sink 8 is fixedly connected to one end of the flow divider 6, and an inlet 9 is opened at the other end of the heat sink 8 away from the flow divider 6. The inlet 9 is located at one end of the side plate 4, and fluid can easily enter through the inlet 9 opened on one side of the heat sink 8.

[0028] In this embodiment, preferably, a heat dissipation plate 2 10 is fixedly connected to the other end of the diverter plate 6. The other end of the heat dissipation plate 2 10 away from the diverter plate 6 has an outlet 11. The outlet 11 is located at the other end of the side plate 4. Heat dissipation plate 1 8 and heat dissipation plate 2 10 are fixedly connected to both ends of the heat exchange plate, thereby increasing the heat dissipation area and improving the heat dissipation effect.

[0029] In this embodiment, preferably, a pressure sensor 12 is fixedly installed at the bottom of the inner side of the heat exchanger plate 11 and the heat exchanger plate 22. The pressure sensor 12 is electrically connected to an elastic element 13, which is installed on the helical spring 202. The pressure sensor 12 can sense the pressure change of the fluid inside the heat exchanger in real time, and the elastic element 13 can react according to the signal transmitted by the pressure sensor 12, thereby reducing the risk of fluid leakage.

[0030] In this embodiment, a symmetrical plate heat exchanger, through the interaction of the sealing gasket 201, the helical spring 202, and the fixing bolt 203 installed in the sealing groove 3, when the internal fluid pressure of the heat exchanger increases, the pressure acts on the sealing gasket 201, causing the helical spring 202 at the bottom of the sealing gasket 201 to compress and deform. The elastic restoring force of the helical spring 202 applies additional pressure to the sealing gasket 201, thereby enhancing the sealing tightness between the sealing gasket 201 and the sealing groove 3 and the plate, thus improving the sealing effect, greatly reducing the risk of fluid leakage, and improving the stability of equipment operation. By fixing the flow divider 6 between the side plates 4 at both ends of the upper surface of the base 1 and in the middle of the crossbar 5, the fluid entering the heat exchanger is more evenly distributed to each heat exchange channel, avoiding the low local heat exchange efficiency caused by uneven fluid distribution, improving the overall heat exchange efficiency, making the heat exchange between hot and cold fluids more sufficient, meeting various heat exchange needs, and improving practicality.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. Symmetric plate heat exchanger comprising a base (1) and an auxiliary mechanism (2), characterized in that: The upper surface of the base (1) is provided with a sealing groove (3), and the auxiliary mechanism (2) is located at the bottom end of the sealing groove (3). The auxiliary mechanism (2) comprises a sealing washer (201), a spiral spring (202) and a fixing bolt (203), the inner bottom end of the sealing groove (3) is fixedly provided with the sealing washer (201), the size of the sealing washer (201) is matched with the sealing groove (3), and the sealing washer (201) is tightly attached to the sealing groove (3), the bottom end of the sealing washer (201) is uniformly provided with the spiral spring (202), the bottom end of the spiral spring (202) is fixedly provided with the fixing bolt (203), and the top end of the spiral spring (202) is fixedly provided with a top plate (204).

2. A symmetrical plate heat exchanger according to claim 1, characterised in that The upper surface of the base (1) is provided with a sealing groove (3), and the auxiliary mechanism (2) is located at the bottom end of the sealing groove (3).

3. A symmetrical plate heat exchanger according to claim 2, characterised in that: The middle of the horizontal rod (5) is fixedly provided with a shunt plate (6), and the two ends of the shunt plate (6) are uniformly provided with shunt holes (7).

4. A symmetrical plate heat exchanger according to claim 3, characterised in that: One end of the shunt plate (6) is fixedly connected with a heat dissipation plate one (8), the other end of the heat dissipation plate one (8) away from the shunt plate (6) is provided with an inlet (9), and the inlet (9) is located at one end of the side plate (4).

5. A symmetrical plate heat exchanger according to claim 3, characterized in that The other end of the shunt plate (6) is fixedly connected with a heat dissipation plate two (10), the other end of the heat dissipation plate two (10) away from the shunt plate (6) is provided with an outlet (11), and the outlet (11) is located at the other end of the side plate (4).

6. A symmetrical plate heat exchanger according to claim 4, characterised in that: The inner bottom end of the heat dissipation plate one (8) and the heat dissipation plate two (10) is fixedly provided with a pressure sensor (12), the pressure sensor (12) is electrically connected with an elastic element (13), and the elastic element (13) is arranged on the spiral spring (202).

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