Plate heat exchanger and heat exchange system

Abstract

The plate heat exchanger and the heat exchange system are applied to the technical field of plate heat exchangers, the plate heat exchanger comprises a bottom plate, a heat exchanger body, a heat exchange assembly and a controller are arranged at the top of the bottom plate, the heat exchanger body is arranged on one side of the heat exchange assembly, and the heat exchange assembly is connected with the heat exchanger body and used for conducting heat exchange on media; the heat exchange assembly comprises a hot inlet pipe, a hot outlet pipe, a cold inlet pipe and a cold outlet pipe, the hot inlet pipe and the hot outlet pipe are connected to the upper portion of the heat exchanger, and the cold inlet pipe and the cold outlet pipe are connected to the lower portion of the heat exchanger; a circulation assembly is arranged in the middle of the heat exchange assembly and comprises a central ball, a first connecting pipe and a second connecting pipe, the first connecting pipe is connected between the hot inlet pipe and the cold inlet pipe, and the second connecting pipe is connected between the hot outlet pipe and the cold outlet pipe. And the heat exchange efficiency can be ensured during maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of plate heat exchangers, and in particular to a plate heat exchanger and a heat exchange system. Background Art

[0002] At present, the plate heat exchanger in the existing technology is a heat exchange equipment composed of a series of stacked metal sheets with a certain corrugated shape. It has the advantages of high heat transfer efficiency, light weight, small space occupation, compact structure, and easy repair and maintenance. It is widely used in petrochemical, aerospace, refrigeration and heating and other industries.

[0003] When the working fluid of the heat exchanger is in a two-phase state, due to the complexity and uncertainty of the two-phase flow, fluid leakage may occur, resulting in shutdown for maintenance and affecting industrial progress.

[0004] In order to prevent the leakage of heat exchanger fluid from affecting the heat exchange efficiency and industrial progress, a plate heat exchanger and a heat exchange system are provided, which can promptly alarm when the heat exchanger fluid leaks and ensure the heat exchange efficiency during maintenance. Summary of the Invention

[0005] The object of the present invention is to provide a plate heat exchanger and a heat exchange system to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a plate heat exchanger and a heat exchange system, comprising a base plate, a heat exchanger, a heat exchange component and a controller are arranged on the top of the base plate, the heat exchanger is arranged on one side of the heat exchange component, and the heat exchange component is connected to the heat exchanger for exchanging heat with the medium;

[0007] The heat exchange assembly includes a hot inlet pipe, a hot outlet pipe, a cold inlet pipe and a cold outlet pipe, wherein:

[0008] The hot inlet pipe and the hot outlet pipe are connected to the upper part of the heat exchanger respectively, and the cold inlet pipe and the cold outlet pipe are connected to the lower part of the heat exchanger respectively;

[0009] A circulation component is provided in the middle of the heat exchange component, and the circulation component includes a central ball, a connecting pipe 1 and a connecting pipe 2, wherein the connecting pipe 1 is connected between the hot inlet pipe and the cold inlet pipe, and the connecting pipe 2 is connected between the hot outlet pipe and the cold outlet pipe, and the connecting pipe 1 is connected to a valve 3 and a valve 5, wherein the valve 5 is located above the valve 3, and the connecting pipe 2 is connected to a valve 4 and a valve 6, wherein the valve 6 is located above the valve 4;

[0010] A first motor is fixed on one side of the central ball, and the central ball is hollow. The internal middle bearing of the central ball is connected to a connecting shaft. The output end of the first motor is fixedly connected to the connecting shaft. A connecting ball is fixed to the outside of the connecting shaft. Connecting plates are fixed on both sides of the connecting ball. An arc-shaped baffle is fixed on one side of each group of connecting plates. Two groups of connecting holes 1 are opened on the arc-shaped baffle close to the connecting tube 1, and two groups of connecting holes 2 are opened on the arc-shaped baffle close to the connecting tube 2. The first motor is electrically connected to the controller.

[0011] According to the above technical solution, central tube one is connected between the central ball and connecting tube one, central tube two is connected between the central ball and connecting tube two, central hole one and central hole two are respectively provided inside the central tube one, and central hole three and central hole four are respectively provided between the central tubes two.

[0012] According to the above technical solution, the hot inlet pipe and the hot outlet pipe are both connected to pressure gauge 1 and valve 1, and the cold inlet pipe and the cold outlet pipe are both connected to pressure gauge 2 and valve 2. Pressure gauge 1 and pressure gauge 2 are both electrically connected to the controller.

[0013] According to the above technical solution, the output heads of the hot outlet pipe and the cold outlet pipe are both connected to switch valves, the hot outlet pipe and the cold outlet pipe are connected to transmission pipes, the transmission pipes are connected to three-way valves, one end of the three-way valve is connected to a storage box, and the switch valve and the three-way valve are electrically connected to the controller.

[0014] According to the above technical solution, the heat exchanger includes several partitions, and compartment one and compartment two are formed between the several partitions. The hot inlet pipe, hot outlet pipe, cold inlet pipe and cold outlet pipe all extend into the partitions and pass through the several partitions, wherein the hot inlet pipe and hot outlet pipe both pass through compartment one, and the cold inlet pipe and cold outlet pipe both pass through compartment two.

[0015] According to the above technical solution, the pressure gauge 1 and the pressure gauge 2 are close to the side of the heat exchanger, and the circulation component is away from the side of the heat exchanger;

[0016] A time recording module is set in the controller.

[0017] According to the above technical solution, temperature sensor 1 is provided inside the hot inlet pipe and the hot outlet pipe, and temperature sensor 2 is provided inside the cold inlet pipe and the cold outlet pipe. Temperature sensor 1 and temperature sensor 2 are electrically connected to the controller.

[0018] According to the above technical solution, the heat exchange system includes the following method:

[0019] Method 1: When the cold medium and the hot medium enter the heat exchanger, the pressure gauge 2 on the cold inlet pipe detects the pressure in real time and transmits it to the controller. At the same time, the pressure gauge 1 on the hot inlet pipe detects the pressure of the inlet pipe in real time and transmits it to the controller, marked as When the heat exchanged medium flows out through the hot outlet pipe and the cold outlet pipe respectively, the outlet pressures detected by pressure gauge 1 on the hot outlet pipe and pressure gauge 2 on the cold outlet pipe are transmitted to the controller and marked as ;

[0020] Method 2: Set the normal pressure of the cold medium and hot medium after heat exchange in the controller to , when the pressure of the cold medium and the hot medium after heat exchange are not consistent with the set When the pressure of one medium is equal to the pressure of the other medium, it indicates that there is leakage between compartment 1 and compartment 2, indicating that there is a problem in the heat exchanger. At this time, the signal is transmitted to the staff to suspend the operation of the heat exchanger. When the pressure of only one of the mediums is equal to the pressure of the other medium, it indicates that there is leakage between compartment 1 and compartment 2, indicating that there is a problem in the heat exchanger. If they are not equal, it means that there is leakage in the gap of the medium during transmission, and the extent of the leakage needs to be further determined.

[0021] According to the above technical solution, the second method includes the following steps:

[0022] When there is a leak in one of the groups of media, staff are required to repair it. During the repair process, in order to ensure the heat exchange efficiency at all times, the non-leaking media is controlled to be diverted to ensure that the media pressure of the hot outlet pipe and the cold outlet pipe is consistent.

[0023] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the present invention connects connecting pipe 2 with connecting pipe 1 by providing a circulation component, so that the heat medium in the hot inlet pipe enters connecting pipe 2 through the central ball. At the same time, valve 6 is closed and valve 3 is opened, so that the diverted heat medium flows through connecting pipe 2 to the cold outlet pipe, thereby synchronously reducing the medium pressure of the hot outlet pipe, and the controller monitors the pressure value on the hot outlet pipe in real time until it is consistent with the pressure value on the cold outlet pipe, thereby avoiding the flow rate change of the cold medium and the hot medium due to hydraulic influence when repairing the heat exchanger, thereby affecting the heat exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a side schematic diagram of the overall structure of the present invention;

[0027] Figure 3 This invention Figure 2 A local enlarged schematic diagram of area A;

[0028] Figure 4 This is a cross-sectional view of the circulation component of the present invention Figure 1 ;

[0029] Figure 5 This is a cross-sectional view of the circulation component of the present invention Figure 2 ;

[0030] Figure 6 is a schematic diagram of a heat exchanger of the present invention;

[0031] Figure 7 Schematic diagram of the fluid state of the heat exchanger of the present invention;

[0032] Figure 8 It is a two-dimensional schematic diagram of the front of the heat exchanger of the present invention;

[0033] Figure 9 This is a schematic diagram of the flow component state of the present invention Figure 1 ;

[0034] Figure 10 This is a schematic diagram of the flow component state of the present invention Figure 2 ;

[0035] In the figure: 1, bottom plate; 2, heat exchanger; 3, controller; 4, hot inlet pipe; 5, hot outlet pipe; 6, pressure gauge 1; 7, cold outlet pipe; 8, pressure gauge 2; 9, cold inlet pipe; 10, connecting pipe 2; 11, connecting pipe 1; 12, central ball; 13, compartment 2; 14, central pipe 2; 15, first motor; 16, connecting ball; 17, connecting plate; 18, valve 6; 19, arc baffle; 20, connecting hole 1; 21, connecting Connecting hole two; 22. Central hole four; 23. Central hole one; 24. Central hole two; 25. Central tube one; 26. Cavity; 27. Connecting shaft; 28. Valve three; 29. Valve four; 30. Central hole three; 31. Valve one; 32. Valve two; 33. Partition; 34. Compartment one; 35. Temperature sensor one; 36. Temperature sensor two; 37. Valve five; 38. Transmission pipe; 39. Three-way valve; 40. Switch valve. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] See also Figure 1-10The present invention provides a technical solution: a plate heat exchanger and a heat exchange system, comprising a base plate 1, a heat exchanger 2, a heat exchange component and a controller 3 are arranged on the top of the base plate 1, the heat exchanger 2 is arranged on one side of the heat exchange component, and the heat exchange component is connected to the heat exchanger 2 for exchanging heat with the medium.

[0038] A circulation component is provided in the middle of the heat exchange component to control the medium between the heat exchange components.

[0039] The heat exchange assembly includes a hot inlet pipe 4, a hot outlet pipe 5, a cold inlet pipe 9 and a cold outlet pipe 7. The hot inlet pipe 4 and the hot outlet pipe 5 are respectively connected to the top of the heat exchanger 2, and the cold inlet pipe 9 and the cold outlet pipe 7 are respectively connected to the bottom of the heat exchanger 2;

[0040] The hot inlet pipe 4 and the hot outlet pipe 5 are both connected to a pressure gauge 6 and a valve 31, the cold inlet pipe 9 and the cold outlet pipe 7 are both connected to a pressure gauge 8 and a valve 32, the pressure gauge 6 and the pressure gauge 2 8 are both electrically connected to the controller 3, the hot inlet pipe 4 and the hot outlet pipe 5 are internally provided with a temperature sensor 35, the cold inlet pipe 9 and the cold outlet pipe 7 are internally provided with a temperature sensor 2 36, the temperature sensor 35 and the temperature sensor 2 36 are electrically connected to the controller 3.

[0041] The output heads of the hot outlet pipe 5 and the cold outlet pipe 7 are both connected to a switch valve 40, and the hot outlet pipe 5 and the cold outlet pipe 7 are connected to a transmission pipe 38, and the transmission pipe 38 is connected to a three-way valve 39. One end of the three-way valve 39 is connected to a storage box (not shown in the figure), and the switch valve 40 and the three-way valve 39 are electrically connected to the controller 3.

[0042] Connect the hot inlet pipe 4 to an external heat source, open the valve 1 31 on the hot inlet pipe 4 to allow the hot medium to enter the heat exchanger 2 through the hot inlet pipe 4, and the hot medium after heat exchange comes out from the hot outlet pipe 5, while the cold inlet pipe 9 is connected to the external cold medium source, open the valve 2 32, and allow the external cold medium to enter the heat exchanger 2, so that the cold medium takes away the heat in the hot medium, and the cold medium flows out through the hot outlet pipe 5, thereby completing the heat exchange.

[0043] The heat exchanger 2 includes several partitions 33, and compartment one 34 and compartment two 13 are formed between the partitions 33. The hot inlet pipe 4, hot outlet pipe 5, cold inlet pipe 9 and cold outlet pipe 7 all extend into the partitions 33 and pass through the partitions 33. Among them, the hot inlet pipe 4 and the hot outlet pipe 5 both pass through compartment one 34, and the cold inlet pipe 9 and the cold outlet pipe 7 both pass through compartment two 13. The hot medium enters compartment one 34, and the cold medium enters compartment two 13, and heat is transferred through the partitions 33 to enable the heat exchanger 2 to exchange heat.

[0044] The circulation component includes a central ball 12, connecting pipe one 11 and connecting pipe two 10, connecting pipe one 11 is connected between the hot inlet pipe 4 and the cold inlet pipe 9, connecting pipe two 10 is connected between the hot outlet pipe 5 and the cold outlet pipe 7, connecting pipe one 11 is connected with valve three 28 and valve five 37, wherein valve five 37 is located above valve three 28, connecting pipe two 10 is connected with valve four 29 and valve six 18, wherein valve six 18 is located above valve four 29, the hot inlet pipe 4 and the cold inlet pipe 9 can be connected through valve three 28 and valve five 37, and the hot outlet pipe 5 and the cold outlet pipe 7 can be connected through valve four 29 and valve six 18, and a cavity 26 is opened inside the central ball 12.

[0045] Valve three 28 and valve five 37 are one-way valves to prevent medium backflow.

[0046] It should be added that pressure gauge 1 6 and pressure gauge 2 8 are close to the side of the heat exchanger 2, and the flow component is away from the side of the heat exchanger 2 to avoid affecting the medium pressure on the hot outlet pipe 5 and the cold outlet pipe 7 when the flow component is working.

[0047] A central tube 25 is connected between the central ball 12 and the connecting tube 1 11 , and a central tube 2 14 is connected between the central ball 12 and the connecting tube 2 10 . A central hole 1 23 and a central hole 2 24 are respectively provided inside the central tube 1 25 , and a central hole 30 and a central hole 4 22 are respectively provided between the central tubes 2 14 .

[0048] A first motor 15 is fixed to one side of the central ball 12. The central ball 12 is hollow in shape. The internal intermediate bearing of the central ball 12 is connected to a connecting shaft 27. The output end of the first motor 15 is fixedly connected to the connecting shaft 27. A connecting ball 16 is fixed to the outside of the connecting shaft 27. Connecting plates 17 are fixed on both sides of the connecting ball 16. An arc-shaped baffle 19 is fixed to one side of each group of connecting plates 17. Two groups of connecting holes 1 20 are provided on the arc-shaped baffle 19 near the connecting tube 11, and two groups of connecting holes 2 21 are provided on the arc-shaped baffle 19 near the connecting tube 2 10. The first motor 15 is electrically connected to the controller 3.

[0049] Starting the first motor 15 drives the connecting shaft 27 to rotate, thereby driving the connecting ball 16 to rotate, and the connecting plates 17 on both sides of the connecting ball 16 rotate accordingly, so that the connecting hole 1 20 and the central hole 1 23 cooperate with the central hole 2 24, and at the same time control the connecting hole 2 21 to cooperate with the central hole 3 30 and the central hole 4 22, thereby connecting the connecting pipe 2 10 and the connecting pipe 1 11, which can improve the heat exchange quality of the heat exchanger.

[0050] Example 1:

[0051] In this embodiment, when the heat exchanger 2 is exchanging heat, it can be determined whether the heat exchanger 2 has leakage, and the heat exchange efficiency of the heat exchanger 2 can be ensured by switching the circulation components.

[0052] Specifically, during heat exchange, the hot inlet pipe 4 will transfer the hot medium to the compartment 1 34, and the cold medium will enter the compartment 2 13 through the cold inlet pipe 9, transfer heat through the partition 33, so that the temperatures of the cold and hot media are exchanged. The media after heat exchange flow out through the hot outlet pipe 5 and the cold outlet pipe 7 respectively. When the cold medium and the hot medium enter the heat exchanger 2, the pressure gauge 2 8 on the cold inlet pipe 9 detects the pressure in real time and transmits it to the controller 3. At the same time, the pressure gauge 1 6 on the hot inlet pipe 4 detects the pressure of the inlet pipe in real time and transmits it to the controller 3, marked as When the heat exchanged medium flows out through the hot outlet pipe 5 and the cold outlet pipe 7 respectively, the outlet pressures are detected by the pressure gauge 1 6 on the hot outlet pipe 5 and the pressure gauge 2 8 on the cold outlet pipe 7 and transmitted to the controller 3, marked as .

[0053] In controller 3, the normal pressure of the cold medium and the hot medium after heat exchange is set to , when the pressure of the cold medium and the hot medium after heat exchange are not consistent with the set When the pressure of only one of the medium groups is equal to the set pressure, it indicates that there is leakage between compartment 1 34 and compartment 2 13, indicating that there is a problem in the heat exchanger 2. At this time, the signal is transmitted to the staff to suspend the operation of the heat exchanger 2. If they are not equal, it means that there is leakage in the gap of the medium during transmission, and the extent of the leakage needs to be further determined:

[0054] Specifically, a time recording module is set in the controller 3, and the time is set to t. Within the time t, it is judged whether the pressure of the transmitted medium changes. If the monitored pressure is constant, it means that the medium leakage is stable. If the monitored pressure gradually decreases, it means that the medium leakage is more serious.

[0055] When there is leakage in one of the groups of media, staff are required to repair it. During the repair process, in order to ensure the heat exchange efficiency at all times, the non-leaked medium is controlled to be diverted to ensure that the medium pressures of the hot outlet pipe 5 and the cold outlet pipe 7 are consistent: for example, when the pressure of the cold medium in the cold outlet pipe 7 becomes smaller, the valve 5 37 on the connecting pipe 1 1 is controlled to be opened, and the valve 3 28 is continuously closed. Then the first motor 15 is controlled to start, driving the connecting plate 17 to rotate, so that the connecting hole 1 20 is connected to the central hole 2 24, and the connecting hole 21 is connected to the central hole 3 30 (as shown in FIG. Figure 9As shown), the connecting pipe 2 10 is connected to the connecting pipe 1 11, so that the heat medium in the heat inlet pipe 4 enters the connecting pipe 2 10 through the central ball 12. At the same time, the valve 6 18 is closed and the valve 3 28 is opened, so that the diverted heat medium flows into the cold outlet pipe 7 through the connecting pipe 2 10, thereby simultaneously reducing the medium pressure of the hot outlet pipe 5. The controller 3 monitors the pressure value on the hot outlet pipe 5 in real time until it is consistent with the pressure value on the cold outlet pipe 7, thereby avoiding changes in the flow rate of the cold medium and the hot medium due to the hydraulic influence when the heat exchanger 2 is repaired, thereby affecting the heat exchange efficiency.

[0056] It should be added that when the state of medium leakage is more serious, the first motor 15 is started to control the connection plate 17 to rotate at a larger angle, so that the arc-shaped baffles 19 on both sides no longer block the central hole 1 23 and the central hole 2 24, and no longer block the central hole 4 22 and the central hole 3 30 (such as Figure 10 As shown), the amount of outflowing medium is controlled, and the pressure value of the hot outlet pipe 5 can be adjusted to be consistent with that of the cold outlet pipe 7 as soon as possible when the medium leakage is serious, thereby further ensuring the heat exchange efficiency.

[0057] Example 2:

[0058] In this embodiment, based on the first embodiment, it is necessary to further ensure the temperatures of the cold medium and the hot medium after heat exchange.

[0059] Specifically, the temperature sensor 35 in the heat inlet pipe 4 detects the temperature of the heat medium entering the heat exchanger 2 and transmits it to the controller 3 and records it as The temperature sensor 35 in the heat outlet pipe 5 detects the temperature of the medium in the heat exchanger 2 and transmits it to the controller 3, which is recorded as .

[0060] The temperature sensor 36 in the cold inlet pipe 9 detects the temperature of the cold medium entering the heat exchanger 2 and transmits it to the controller 3 and records it as The temperature sensor 36 in the cold outlet pipe 7 detects the temperature of the cold medium in the heat exchanger 2 and transmits it to the controller 3 and records it as .

[0061] Compare the temperature of the heat medium after heat transfer. Since the normal temperature of the heat medium in the heat outlet pipe 5 is set in the controller 3, ,when When , it means that the temperature of the heat medium after heat exchange in heat exchanger 2 is still high. When , it indicates that the temperature of the heat medium after heat exchange in heat exchanger 2 is within the normal range.

[0062] Compare the temperature of the cold medium after heat exchange, and set the normal temperature of the cold medium in the cold outlet pipe 7 in the controller 3 to ,when When , it means that the temperature of the cold medium after heat exchange in heat exchanger 2 is low, which means that the cold medium absorbs less heat. When , it means that the temperature of the cold medium after heat exchange in heat exchanger 2 is within the normal range and absorbs more heat.

[0063] Furthermore, in the case of leakage of one group of media, for example, the case where the pressure of the cold medium in the cold outlet pipe 7 decreases as exemplified in the first embodiment, although the circulation component is adjusted to keep the pressure on the cold outlet pipe 7 and the hot outlet pipe 5 synchronized, the medium temperatures of the hot outlet pipe 5 and the cold outlet pipe 7 will be unbalanced before the pressure synchronization is achieved. Therefore, during the use of the circulation component, when it is detected in real time that the temperature of the hot medium in the heat exchanger 2 is too high and the temperature of the cold medium in the heat exchanger 2 is too low, a signal is transmitted to the switch valve 40 to control the heat exchanger 2. The switch valves 40 on the outlet pipe 5 and the cold outlet pipe 7 are closed, and the three-way valve 39 is opened, so that the media in the hot outlet pipe 5 and the cold outlet pipe 7 are transmitted to the storage box through the transmission pipe 38. At this time, the circulation component is being adjusted until the pressures of the cold outlet pipe 7 and the hot outlet pipe 5 are synchronized and the medium temperatures are within the normal range. Then the three-way valve 39 is closed and the switch valve 40 is opened to continue outputting the heat-exchanged medium. However, when the pressures of the cold outlet pipe 7 and the hot outlet pipe 5 are synchronized, the medium temperature is still not within the normal range, indicating that the temperature difference between the cold and hot media is large and the heat exchanger 2 needs to be re-debugged.

[0064] During the use of the circulation component, if it is monitored in real time that the temperature of only one group of heat exchange media is not within the normal range, for example, the heat medium in the heat inlet pipe 4 is not within the normal range, only the switch valve 40 on the heat outlet pipe 5 is closed, and then the three-way valve 39 is opened, so that the heat medium after heat exchange is transmitted to the storage box through the transmission pipe 38, so as to avoid the temperature of the heat medium transmitted being unqualified, thereby affecting subsequent work.

[0065] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements that are inherent to such process, method, article, or apparatus.

[0066] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A plate heat exchanger comprising a bottom plate (1), characterized in that: A heat exchanger (2), a heat exchange component, and a controller (3) are provided on the top of the base plate (1); the heat exchanger (2) is provided on one side of the heat exchange component, and the heat exchange component is connected to the heat exchanger (2) for exchanging heat with the medium; The heat exchange assembly comprises a hot inlet pipe (4), a hot outlet pipe (5), a cold inlet pipe (9) and a cold outlet pipe (7), wherein: The hot inlet pipe (4) and the hot outlet pipe (5) are respectively connected to the upper part of the heat exchanger (2), and the cold inlet pipe (9) and the cold outlet pipe (7) are respectively connected to the lower part of the heat exchanger (2); A circulation component is provided in the middle of the heat exchange component, and the circulation component includes a central ball (12), a connecting pipe 1 (11) and a connecting pipe 2 (10), wherein the connecting pipe 1 (11) is connected between the hot inlet pipe (4) and the cold inlet pipe (9), and the connecting pipe 2 (10) is connected between the hot outlet pipe (5) and the cold outlet pipe (7), and the connecting pipe 1 (11) is connected to a valve 3 (28) and a valve 5 (37), wherein the valve 5 (37) is located above the valve 3 (28), and the connecting pipe 2 (10) is connected to a valve 4 (29) and a valve 6 (18), wherein the valve 6 (18) is located above the valve 4 (29); A first motor (15) is fixed on one side of the central ball (12). The central ball (12) is hollow. The internal intermediate bearing of the central ball (12) is connected to a connecting shaft (27). The output end of the first motor (15) is fixedly connected to the connecting shaft (27). A connecting ball (16) is fixed to the outside of the connecting shaft (27). Connecting plates (17) are fixed on both sides of the connecting ball (16). An arc-shaped baffle (19) is fixed on one side of each group of connecting plates (17). Two groups of connecting holes (1) (20) are provided on the arc-shaped baffle (19) close to the connecting pipe (11), and two groups of connecting holes (21) (21) are provided on the arc-shaped baffle (19) close to the connecting pipe (10). The first motor (15) is electrically connected to the controller (3).

2. A plate heat exchanger according to claim 1, characterized in that: A central tube 1 (25) is connected between the central ball (12) and the connecting tube 1 (11), and a central tube 2 (14) is connected between the central ball (12) and the connecting tube 2 (10). A central hole 1 (23) and a central hole 2 (24) are respectively provided inside the central tube 1 (25), and a central hole 3 (30) and a central hole 4 (22) are respectively provided between the central tube 2 (14).

3. The plate heat exchanger according to claim 2, characterized in that: The hot inlet pipe (4) and the hot outlet pipe (5) are both connected to a pressure gauge 1 (6) and a valve 1 (31), and the cold inlet pipe (9) and the cold outlet pipe (7) are both connected to a pressure gauge 2 (8) and a valve 2 (32). The pressure gauge 1 (6) and the pressure gauge 2 (8) are both electrically connected to the controller (3).

4. The plate heat exchanger according to claim 3, characterized in that: The output heads of the hot outlet pipe (5) and the cold outlet pipe (7) are both connected to a switch valve (40), the hot outlet pipe (5) and the cold outlet pipe (7) are connected to a transmission pipe (38), the transmission pipe (38) is connected to a three-way valve (39), one end of the three-way valve (39) is connected to a storage box, and the switch valve (40) and the three-way valve (39) are electrically connected to the controller (3).

5. The plate heat exchanger according to claim 4, characterized in that: The heat exchanger (2) includes a plurality of partitions (33), and a compartment one (34) and a compartment two (13) are formed between the plurality of partitions (33). The hot inlet pipe (4), the hot outlet pipe (5), the cold inlet pipe (9) and the cold outlet pipe (7) all extend into the partitions (33) and pass through the plurality of partitions (33), wherein the hot inlet pipe (4) and the hot outlet pipe (5) all pass through the compartment one (34), and the cold inlet pipe (9) and the cold outlet pipe (7) all pass through the compartment two (13).

6. The plate heat exchanger according to claim 5, characterized in that: The pressure gauge 1 (6) and the pressure gauge 2 (8) are located on a side close to the heat exchanger (2), and the flow assembly is located on a side away from the heat exchanger (2); A time recording module is set in the controller (3).

7. The plate heat exchanger according to claim 6, characterized in that: A temperature sensor 1 (35) is provided inside the hot inlet pipe (4) and the hot outlet pipe (5), and a temperature sensor 2 (36) is provided inside the cold inlet pipe (9) and the cold outlet pipe (7). The temperature sensor 1 (35) and the temperature sensor 2 (36) are electrically connected to the controller (3).

8. A heat exchange system for a plate heat exchanger, using the plate heat exchanger according to claim 7, the heat exchange system comprising the following method: Method 1: When the cold medium and the hot medium enter the heat exchanger (2), the pressure gauge 2 (8) on the cold inlet pipe (9) detects the pressure in real time and transmits it to the controller (3). At the same time, the pressure gauge 1 (6) on the hot inlet pipe (4) detects the pressure of the inlet pipe in real time and transmits it to the controller (3), marked as When the medium after heat exchange flows out through the hot outlet pipe (5) and the cold outlet pipe (7), the outlet pressures detected by the pressure gauge 1 (6) on the hot outlet pipe (5) and the pressure gauge 2 (8) on the cold outlet pipe (7) are transmitted to the controller (3), marked as ; Method 2: Set the normal pressure of the cold medium and the hot medium after heat exchange in the controller (3) to , when the pressure of the cold medium and the hot medium after heat exchange are not consistent with the set When the pressure of only one of the mediums is equal to the pressure of the unset medium, it indicates that there is leakage between compartment 1 (34) and compartment 2 (13), indicating that there is a problem in the heat exchanger (2). At this time, the signal is transmitted to the staff to suspend the operation of the heat exchanger (2). If they are not equal, it means that there is leakage in the interval of the medium during transmission, and the extent of the leakage needs to be further determined.

9. The heat exchange system of a plate heat exchanger according to claim 8, characterized in that: The second method comprises the following steps: When there is leakage in one group of media, staff are required to repair it. During the repair process, in order to ensure the heat exchange efficiency at all times, the non-leaking media is controlled to be diverted to ensure that the media pressures of the hot outlet pipe (5) and the cold outlet pipe (7) are consistent.

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