A detachable plate heat exchanger

Abstract

The utility model provides a detachable plate heat exchanger, which relates to the technical field of heat exchangers, including a fixed pressing plate, a movable pressing plate and a heat exchange plate, wherein the heat exchange plate is arranged between the fixed pressing plate and the movable pressing plate, and the heat exchange plate is provided with a plurality of groups, the fixed pressing plate is provided with a fluid inlet and outlet, and the plurality of groups of the heat exchange plates are provided with through openings corresponding to the fluid inlet and outlet, and the edge of the heat exchange plate close to one side of the movable pressing plate and around the through opening are provided with sealing strips; the utility model adds a metal gasket, and by rearranging the order of the heat exchange plates, the sealing strip is directed toward the movable pressing plate, and the last heat exchange plate is replaced with a heat exchange plate with a standard open opening, on the one hand, the metal gasket can isolate the medium from contact with the movable pressing plate, and on the other hand, the last heat exchange plate will no longer be deformed under negative pressure operating conditions, thereby realizing normal operation of the heat exchanger under negative pressure conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a detachable plate heat exchanger. Background Art

[0002] The detachable plate heat exchanger is a heat exchanger with a simple structure, high cost performance and quick maintenance. Its basic structure is that a plurality of continuously arranged heat exchange plates with flow channel inlets and outlets and sealing strips are assembled into a whole to form a series of stable flow channels inside. The principle is that the fluid medium enters the internal plate flow channel of the heat exchanger alternately in different directions to achieve the purpose of heat exchange. It is suitable for heating, cooling and evaporation in many applications. Generally speaking, the detachable plate heat exchanger for heating, cooling and evaporation does not require separate structure and flow channel design, but the detachable plate heat exchanger for condensation needs separate structure and flow channel design;

[0003] The internal cavity of the detachable plate heat exchanger composed of heat exchange plates and rubber strips has its structural strength completely unaffected under conditions without phase change. However, under conditions with phase change, especially under condensation operation, after the gas is cooled and undergoes phase change and liquefies into liquid, a certain degree of negative pressure may occur in the internal cavity. The strength of the clamping plate of the conventionally designed detachable plate heat exchanger can meet normal positive pressure conditions. However, under negative pressure conditions, the clamping plate cannot provide effective strength support, which may cause the plate to deform and fail to operate normally. Therefore, the utility model proposes a detachable plate heat exchanger to solve the problems existing in the prior art. Summary of the invention

[0004] In view of the above problems, the utility model proposes a detachable plate heat exchanger. On the one hand, the metal gasket of the detachable plate heat exchanger can isolate the medium from contact with the movable pressure plate. On the other hand, under negative pressure operating conditions, the last heat exchange plate will no longer be deformed, thereby realizing normal operation of the heat exchanger under negative pressure conditions.

[0005] To achieve the purpose of the utility model, the utility model is implemented by the following technical solutions: a detachable plate heat exchanger, comprising a fixed pressing plate, a movable pressing plate and a heat exchange plate, the heat exchange plate is arranged between the fixed pressing plate and the movable pressing plate, and the heat exchange plate is provided with multiple groups, the fixed pressing plate is provided with a fluid inlet and outlet, and the multiple groups of the heat exchange plates are provided with through openings corresponding to the fluid inlet and outlet, the heat exchange plate is provided with a sealing strip at the edge of one side of the movable pressing plate and around the through opening, a metal gasket is provided on one side of the movable pressing plate, and the metal gasket corresponds to the through opening;

[0006] Both ends of the fixed pressing plate are provided with a first fastening through hole, and both ends of the movable pressing plate are provided with a second fastening through hole, and the first fastening through hole and the second fastening through hole are connected by a fastener.

[0007] A further improvement is that the fastener includes a screw rod and a nut, the screw rod is used to be inserted into the first fastening through hole and the second fastening through hole, nuts are threadedly installed on both sides of the screw rod, and the nuts on both sides are respectively used to clamp and fix the clamping plate and the movable clamping plate.

[0008] A further improvement is that an upper guide rod and a lower guide rod are respectively provided at the upper and lower ends of the fixed pressing plate close to the heat exchange plate, and a column is provided at one end of the upper guide rod and the lower guide rod.

[0009] A further improvement is that: a plug hole and a slot are respectively provided at the middle position of the upper and lower ends of the movable clamping plate, and a positioning groove is provided at the middle position of the upper and lower ends of the heat exchange plate. The upper guide rod passes through the positioning groove and the plug hole at the upper end, and the lower guide rod passes through the positioning groove and the slot at the lower end.

[0010] A further improvement is that first bolts are provided at the upper and lower ends of one side of the fixed clamping plate, second bolts are provided at the upper and lower ends of one side of the column, and both sides of the upper guide rod and the lower guide rod are fixed to the first bolt and the second bolt respectively.

[0011] A further improvement is that a first fixing plate is provided below the fixed pressing plate on the side away from the heat exchange plate, and the first fixing plate is fixed to the installation base surface by screws.

[0012] A further improvement is that a second fixing plate is provided below the side of the column away from the second bolt, and the second fixing plate is fixed to the installation base surface by screws.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model adds a metal gasket, rearranges the order of the heat exchange plates, directs the sealing strip toward the movable pressing plate, and replaces the last heat exchange plate with a heat exchange plate with a standard opening. On the one hand, the metal gasket can isolate the medium from contacting the movable pressing plate, and on the other hand, the last heat exchange plate will no longer be deformed under negative pressure operating conditions, thereby achieving normal operation of the heat exchanger under negative pressure conditions, with less failure rate and higher operating stability under negative pressure conditions.

[0015] 2. In the utility model, a screw rod is inserted between the first fastening through hole and the second fastening through hole of the fixed clamping plate and the movable clamping plate, and the nut thread on the screw rod is moved to clamp the fixed clamping plate and the movable clamping plate respectively, making installation and disassembly more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the disassembly of the utility model;

[0017] Figure 2 This is a schematic diagram of the movable pressing plate of the utility model;

[0018] Figure 3 It is the front view of the utility model.

[0019] Among them: 1. fixed pressing plate; 2. movable pressing plate; 3. heat exchange plate; 4. fluid inlet and outlet; 5. through port; 6. sealing strip; 7. metal gasket; 8. first fastening through hole; 9. second fastening through hole; 10. screw rod; 11. nut; 12. upper guide rod; 13. lower guide rod; 14. column; 15. jack; 16. slot; 17. positioning groove; 18. first bolt; 19. second bolt; 20. first fixing plate; 21. second fixing plate. DETAILED DESCRIPTION

[0020] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention. Embodiment 1

[0021] according to Figure 1 , 2 As shown in Figure 3, this embodiment proposes a detachable plate heat exchanger, including a fixed pressing plate 1, a movable pressing plate 2 and a heat exchange plate 3, wherein the heat exchange plate 3 is arranged between the fixed pressing plate 1 and the movable pressing plate 2, and the heat exchange plate 3 is provided with multiple groups, the fixed pressing plate 1 is provided with a fluid inlet and outlet 4, and the multiple groups of heat exchange plates 3 are provided with through openings 5 ​​corresponding to the fluid inlet and outlet 4, the heat exchange plate 3 is provided with a sealing strip 6 at the edge of one side of the movable pressing plate 2 and around the through opening 5, and a metal gasket 7 is provided on one side of the movable pressing plate 2, and the metal gasket 7 corresponds to the through opening 5;

[0022] Both ends of the fixed pressing plate 1 are provided with a first fastening through hole 8, and both ends of the movable pressing plate 2 are provided with a second fastening through hole 9, and the first fastening through hole 8 and the second fastening through hole 9 are connected by fasteners. When in use, a metal gasket 7 is added, and the order of the heat exchange plates 3 is rearranged, and the sealing strip 6 is directed toward the movable pressing plate 2, and the last heat exchange plate 3 is replaced with a heat exchange plate 3 with a standard opening 5. On the one hand, the metal gasket 7 can isolate the medium from contacting the movable pressing plate 2, and on the other hand, the last heat exchange plate 3 will no longer be deformed under negative pressure operating conditions, thereby realizing the normal operation of the (condensation-phase change) heat exchanger under negative pressure conditions, having a lower failure rate and higher operating stability under negative pressure conditions, and can effectively meet the condensation application of the detachable plate heat exchanger.

[0023] The fastener includes a screw rod 10 and a nut 11. The screw rod 10 is used to be inserted into the first fastening through hole 8 and the second fastening through hole 9. Nuts 11 are threadedly installed on both sides of the screw rod 10, and the nuts 11 on both sides are respectively used to clamp the fixed pressing plate 1 and the movable pressing plate 2. When in use, the screw rod 10 is inserted between the first fastening through hole 8 and the second fastening through hole 9 of the fixed pressing plate 1 and the movable pressing plate 2, and the nut 11 on the screw rod 10 is threadedly moved to clamp the fixed pressing plate 1 and the movable pressing plate 2, respectively, so that installation and disassembly are more convenient.

[0024] The upper and lower ends of the fixed pressing plate 1 close to the heat exchange plate 3 are respectively provided with an upper guide rod 12 and a lower guide rod 13, and a column is provided at one end of the upper guide rod 12 and the lower guide rod 13. The middle positions of the upper and lower ends of the movable pressing plate 2 are respectively provided with a plug hole 15 and a slot 16, and the middle positions of the upper and lower ends of the heat exchange plate 3 are provided with a positioning groove 17, the upper guide rod 12 passes through the positioning groove 17 and the plug hole 15 at the upper end, and the lower guide rod 13 passes through the positioning groove 17 and the slot 16 at the lower end. The upper and lower ends of one side of the fixed pressing plate 1 are both provided with a first bolt 18, and the upper and lower ends of one side of the column 14 are both provided with a second bolt 19, and the two sides of the upper guide rod 12 and the lower guide rod 13 are fixed with the first bolt 18 and the second bolt 19 respectively. When in use, the upper guide rod 12 and the lower guide rod 13 are installed on one side of the fixed clamping plate 1 through the first bolt 18, the upper guide rod 12 and the lower guide rod 13 pass through the positioning groove 17 and the plug hole 15 at the upper end, pass through the positioning groove 17 and the slot 16 at the lower end, and are fixed with the second bolt 19 on one side of the column 14, which can guide the movement of the movable clamping plate 2 and limit the heat exchange plate 3. Embodiment 2

[0025] according to Figure 1 , 2As shown in Figure 3, this embodiment proposes a detachable plate heat exchanger, including a fixed pressing plate 1, a movable pressing plate 2 and a heat exchange plate 3, wherein the heat exchange plate 3 is arranged between the fixed pressing plate 1 and the movable pressing plate 2, and the heat exchange plate 3 is provided with multiple groups, the fixed pressing plate 1 is provided with a fluid inlet and outlet 4, and the multiple groups of heat exchange plates 3 are provided with through openings 5 ​​corresponding to the fluid inlet and outlet 4, the heat exchange plate 3 is provided with a sealing strip 6 at the edge of one side of the movable pressing plate 2 and around the through opening 5, and a metal gasket 7 is provided on one side of the movable pressing plate 2, and the metal gasket 7 corresponds to the through opening 5;

[0026] Both ends of the fixed pressing plate 1 are provided with a first fastening through hole 8, and both ends of the movable pressing plate 2 are provided with a second fastening through hole 9, and the first fastening through hole 8 and the second fastening through hole 9 are connected by fasteners. When in use, a metal gasket 7 is added, and the order of the heat exchange plates 3 is rearranged, and the sealing strip 6 is directed toward the movable pressing plate 2, and the last heat exchange plate 3 is replaced with a heat exchange plate 3 with a standard opening 5. On the one hand, the metal gasket 7 can isolate the medium from contacting the movable pressing plate 2, and on the other hand, the last heat exchange plate 3 will no longer be deformed under negative pressure operating conditions, thereby realizing the normal operation of the (condensation-phase change) heat exchanger under negative pressure conditions, having a lower failure rate and higher operating stability under negative pressure conditions, and can effectively meet the condensation application of the detachable plate heat exchanger.

[0027] The fastener includes a screw rod 10 and a nut 11. The screw rod 10 is used to be inserted into the first fastening through hole 8 and the second fastening through hole 9. Nuts 11 are threadedly installed on both sides of the screw rod 10, and the nuts 11 on both sides are respectively used to clamp the fixed pressing plate 1 and the movable pressing plate 2. When in use, the screw rod 10 is inserted between the first fastening through hole 8 and the second fastening through hole 9 of the fixed pressing plate 1 and the movable pressing plate 2, and the nut 11 on the screw rod 10 is threadedly moved to clamp the fixed pressing plate 1 and the movable pressing plate 2, respectively, so that installation and disassembly are more convenient.

[0028] A first fixing plate 20 is provided below the fixed pressing plate 1 on the side away from the heat exchange plate 3, and the first fixing plate 20 is fixed to the mounting base by screws. A second fixing plate 21 is provided below the side of the column 14 away from the second bolt 19, and the second fixing plate 21 is fixed to the mounting base by screws. When in use, the fixed pressing plate 1 is fixed to the mounting base by the first fixing plate 20 with screws, and the column 14 is fixed to the mounting base by the second fixing plate 21 with screws, so as to improve the stability of the device.

[0029] The detachable plate heat exchanger is additionally provided with a metal gasket 7. When a conventionally designed detachable plate heat exchanger encounters a negative pressure condition during operation, the first to be unable to withstand the negative pressure and to deform and leak is the last heat exchange plate without a hole. The product rearranges the order of the heat exchange plates 3, directs the sealing strip 6 toward the movable pressing plate 2, and replaces the last heat exchange plate 3 with a heat exchange plate 3 with a standard opening 5. On the one hand, the metal gasket 7 can isolate the medium from contact with the movable pressing plate 2, and on the other hand, the last heat exchange plate 3 will no longer be deformed under negative pressure operation conditions, thereby achieving normal operation of the heat exchanger under negative pressure conditions (condensation-phase change). Under negative pressure conditions, it has a lower failure rate and higher operating stability, can effectively fill the market gap in the negative pressure design and operation of detachable plate heat exchangers, can effectively meet the condensation application of detachable plate heat exchangers, provide the market with more diverse product choices, and improve product competitiveness. At the same time, a screw rod 10 is inserted between the first fastening through hole 8 and the second fastening through hole 9 of the fixed clamping plate 1 and the movable clamping plate 2 of the product. The nut 11 on the screw rod 10 is threadedly moved to clamp the fixed clamping plate 1 and the movable clamping plate 2 respectively, making installation and disassembly more convenient.

[0030] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A detachable plate heat exchanger, comprising a fixed pressing plate (1), a movable pressing plate (2) and a heat exchange plate (3), characterized in that: The heat exchange plate (3) is arranged between the fixed pressing plate (1) and the movable pressing plate (2), and a plurality of groups of heat exchange plates (3) are provided. The fixed pressing plate (1) is provided with a fluid inlet and outlet (4), and the plurality of groups of heat exchange plates (3) are provided with openings (5) corresponding to the fluid inlet and outlet (4). The heat exchange plate (3) is provided with a sealing strip (6) at the edge of one side of the movable pressing plate (2) and around the opening (5), and a metal gasket (7) is provided on one side of the movable pressing plate (2), and the metal gasket (7) corresponds to the opening (5); Both ends of the fixed pressing plate (1) are provided with a first fastening through hole (8), and both ends of the movable pressing plate (2) are provided with a second fastening through hole (9), and the first fastening through hole (8) and the second fastening through hole (9) are connected by a fastener.

2. A detachable plate heat exchanger according to claim 1, characterized in that: The fastener comprises a screw rod (10) and a nut (11); the screw rod (10) is used to be inserted into a first fastening through hole (8) and a second fastening through hole (9); nuts (11) are threadedly mounted on both sides of the screw rod (10); and the nuts (11) on both sides are respectively used to clamp and fix the clamping plate (1) and the movable clamping plate (2).

3. A detachable plate heat exchanger according to claim 1, characterized in that: An upper guide rod (12) and a lower guide rod (13) are respectively provided at the upper and lower ends of the fixed pressing plate (1) on the side close to the heat exchange plate (3), and a column is provided at one end of the upper guide rod (12) and the lower guide rod (13).

4. A detachable plate heat exchanger according to claim 3, characterized in that: The movable pressing plate (2) is provided with a plug hole (15) and a slot (16) at the middle positions of the upper and lower ends, respectively; the heat exchange plate (3) is provided with a positioning groove (17) at the middle positions of the upper and lower ends, the upper guide rod (12) passes through the positioning groove (17) and the plug hole (15) at the upper end, and the lower guide rod (13) passes through the positioning groove (17) and the slot (16) at the lower end.

5. A detachable plate heat exchanger according to claim 4, characterized in that: The upper and lower ends of one side of the fixed clamping plate (1) are both provided with a first bolt (18), the upper and lower ends of one side of the column (14) are both provided with a second bolt (19), and both sides of the upper guide rod (12) and the lower guide rod (13) are respectively fixed to the first bolt (18) and the second bolt (19).

6. A detachable plate heat exchanger according to claim 5, characterized in that: A first fixing plate (20) is provided below the fixed pressing plate (1) on a side away from the heat exchange plate (3), and the first fixing plate (20) is fixed to the mounting base surface by means of screws.

7. A detachable plate heat exchanger according to claim 6, characterized in that: A second fixing plate (21) is provided below the column (14) on a side away from the second bolt (19), and the second fixing plate (21) is fixed to the installation base surface by means of screws.

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