An intelligent adjustable plate heat exchanger and its method

Abstract

The present invention discloses an intelligent adjustable plate heat exchanger and its method, belonging to the technical field of heat exchangers, which includes a heat exchanger main body, a control valve, an electric control valve, a controller, a detection module, a protection mechanism and an adsorption type filtering mechanism; a cold side water inlet pipe, a cold side water outlet pipe, a hot side water inlet pipe and a hot side water outlet pipe are fixedly installed on the heat exchanger main body; the controller is arranged on the side of the heat exchanger main body; the detection module includes a pressure sensor, a temperature sensor and a flow sensor; control valves, pressure sensors and temperature sensors are fixedly installed on the cold side water inlet pipe, the cold side water outlet pipe, the hot side water inlet pipe and the hot side water outlet pipe; flow sensors are fixedly installed on the cold side water outlet pipe and the hot side water inlet pipe; an electric control valve is fixedly installed on the cold side water outlet pipe; the protection mechanism is installed on the heat exchange plate and the cold side water inlet pipe, and the adsorption type filtering mechanism is installed on the hot side water inlet pipe. Through the above method, the automatic adjustment of the water volume of the cold side water of the heat exchanger is realized.

Description

Technical Field

[0001] The present invention relates to the technical field of heat exchangers, and particularly to an intelligent adjustable plate heat exchanger and a method thereof. Background Technique

[0002] The basic structure of a plate heat exchanger consists of plate heat exchanger plates, plate heat exchanger gaskets, fixed pressing plates, movable pressing plates, clamping bolts, upper guide rods, lower guide rods, rear columns, etc. During operation, multiple corrugated thin plates are arranged at a certain interval, sealed around by gaskets, and overlapped and pressed by a frame and a pressing screw. Therefore, there are distribution pipes and collecting pipes for fluid flow around the gaskets, and these gaskets can just separate the cold and hot fluids, flow in the flow channels on both sides, and then perform heat exchange through the plates.

[0003] For example, Chinese Patent with the publication number CN109737781B discloses a plate heat exchanger with adjustable multi-partition heat exchange area. When this plate heat exchanger is in use, it can automatically select working plates according to the heat exchange flow demand and adjust the heat exchange area put into heat exchange.

[0004] However, the way this plate heat exchanger improves the heat exchange efficiency is to change the total number of heat exchange plates put into heat exchange according to different flows. Therefore, there are heat exchange plates that are not put into heat exchange, resulting in the situation that some heat exchange plates are idle; this affects the overall heat exchange efficiency of the plate heat exchanger.

[0005] Based on this, the present invention designs an intelligent adjustable plate heat exchanger and a method thereof to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned drawbacks of the prior art, the present invention provides an intelligent adjustable plate heat exchanger and a method thereof.

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0008] An intelligent adjustable plate heat exchanger includes a heat exchanger main body, a control valve, an electric control valve, a controller, a detection module, a protection mechanism, and an adsorption type filtering mechanism;

[0009] A plurality of heat exchange plates are evenly arranged at equal intervals on the heat exchanger main body; a cold side inlet pipe, a cold side outlet pipe, a hot side inlet pipe, and a hot side outlet pipe are fixedly installed on the heat exchanger main body; the controller is arranged on the side of the heat exchanger main body;

[0010] The detection module includes a pressure sensor, a temperature sensor, and a flow sensor; control valves, pressure sensors, and temperature sensors are fixedly installed on the cold-side inlet pipe, cold-side outlet pipe, hot-side inlet pipe, and hot-side outlet pipe; flow sensors are fixedly installed on both the cold-side outlet pipe and the hot-side inlet pipe; an electric control valve is fixedly installed on the cold-side outlet pipe; the controller is electrically connected to the pressure sensor, temperature sensor, flow sensor, and electric control valve;

[0011] The protection mechanism is installed on the heat exchange plate and the cold-side inlet pipe, and the adsorption filtration mechanism is installed on the hot-side inlet pipe.

[0012] Furthermore, the controller has two states: automatic adjustment and manual adjustment. When the controller is in the automatic adjustment state, the controller controls the electric control valve; when the controller is in the manual adjustment state, the controller does not issue commands to the electric control valve.

[0013] Furthermore, the protection mechanism includes a seal monitoring module and a buffer module. The seal monitoring module is arranged on the side of the heat exchange plate, and the buffer module is installed on the cold-side inlet pipe.

[0014] Furthermore, a double-layer seal structure is arranged between the heat exchange plates. The double-layer seal structure includes a first sealing rubber ring and a second sealing rubber ring; the first sealing rubber ring and the second sealing rubber ring are fixedly installed outside the circular grooves on the heat exchange plates.

[0015] Furthermore, the seal monitoring module includes a transparent observation plate. An annular confluence groove is formed between the first sealing rubber ring and the second sealing rubber ring, and an L-shaped confluence channel communicating with the annular confluence groove is formed on the side of the heat exchange plate; a transparent observation plate covering the L-shaped confluence channel is fixedly installed on the side of the heat exchange plate.

[0016] Furthermore, the buffer module includes a connecting pipe, a buffer barrel, a buffer airbag, an emptying pipe, and a spring damper. One end of the connecting pipe is fixedly connected to the cold-side inlet pipe, and the other end of the connecting pipe is fixedly connected to the buffer barrel; a buffer airbag is fixed inside the buffer barrel, and the buffer airbag communicates with the connecting pipe; a mounting plate is fixedly installed on the side of the buffer airbag away from the connecting pipe, and a plurality of spring dampers are fixedly installed between the mounting plate and the buffer barrel; the emptying pipe is fixedly installed on the upper side of the buffer barrel.

[0017] Furthermore, the adsorption filtration mechanism includes a filter box, an adsorption module, a cleaning module, and an adjustable seal structure. The filter box is fixedly installed on the hot-side inlet pipe, and an inlet channel, a water passing chamber, and a cleaning chamber are arranged inside the filter box; the inlet channel communicates with the hot-side inlet pipe; the water passing chamber is located in the middle of the inlet channel; the adsorption module is installed on the filter box, and the cleaning module is installed on the filter box and communicates with the cleaning chamber; adjustable seal structures are symmetrically installed on the filter box.

[0018] To better achieve the object of the present invention, the present invention also provides an adjustment method for an intelligent adjustable plate heat exchanger, including the following steps:

[0019] Step 1: When starting to run, select the state of the controller. If the manual state is selected, the next step is not carried out; if the automatic state is selected, the next step is carried out;

[0020] Step 2: The data measured by the pressure sensor, temperature sensor, and flow sensor are transmitted to the controller in real time; the controller makes a judgment based on the collected data to determine whether the end difference T12 - T10 of the heat exchanger is within 2°C - 8°C; if so, step 3 is executed, otherwise, return to step 1;

[0021] Step 3: Determine whether the water pressure drop P9 - P6 on the cold side of the heat exchanger is less than 0.05 mPa. If so, execute step 4; otherwise, return to step 1;

[0022] Step 4: Determine whether the temperature difference T10 - T7 between the inlet and outlet water temperatures on the cold side is less than 7°C. If so, adjust the opening of the electric control valve to reduce the flow rate of the electric control valve; if not, adjust the opening of the electric control valve to increase the flow rate of the electric control valve;

[0023] Step 5: After waiting for time X, return to step 1;

[0024] The readings of the pressure sensor and temperature sensor on the cold side outlet pipe are recorded as P6 and T7 in sequence;

[0025] The readings of the pressure sensor and temperature sensor on the cold side inlet pipe are recorded as P9 and T10 in sequence;

[0026] The reading of the temperature sensor on the hot side outlet pipe is recorded as P11 and T12.

[0027] Furthermore, the adjustment step size and frequency of the electric control valve mentioned in step 4 are as follows:

[0028] If 1°C < T10 - T7 ≤ 3°C, the opening of the electric control valve is adjusted to be reduced by 5%;

[0029] If 3°C < T10 - T7 ≤ 5°C, the opening of the electric control valve is adjusted to be reduced by 3%;

[0030] If 5°C < T10 - T7 ≤ 7°C, the opening of the electric control valve is adjusted to be reduced by 1%;

[0031] If 7°C < T10 - T7 ≤ 8°C, the opening of the electric control valve is adjusted to be increased by 5%;

[0032] If 8°C < T10 - T7 ≤ 10°C, the opening of the electric control valve is adjusted to be increased by 3%;

[0033] If T10 - T7 > 10°C, the opening of the electric control valve is adjusted to be increased by 1%;

[0034] The reading of the temperature sensor on the cold-side outlet water pipe is denoted as T7;

[0035] The reading of the temperature sensor on the cold-side inlet water pipe is denoted as T10.

[0036] Furthermore, the waiting time X mentioned in step five is set to one minute.

[0037] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The cold-side inlet water pipe is the cold-side inflow end, and the cold-side outlet water pipe is the cold-side outflow end; the hot-side inlet water pipe is the hot-side inflow end, and the hot-side outlet water pipe is the hot-side outflow end; during use, the cold-side water flows into the cold-side inlet water pipe through connection, and the hot-side water flows into the hot-side inlet water pipe through connection. Then, after the cold-side water and the hot-side water flow through the space between adjacent heat exchange plates for heat exchange, the cold-side water flows out through the cold-side outlet water pipe, and the hot-side water flows out through the hot-side outlet water pipe; during this process, the pressure, temperature, and flow rate of the cold-side water and the hot-side water are respectively recorded by the pressure sensor, temperature sensor, and flow sensor and transmitted to the controller in real time; the controller makes a judgment based on the collected data and adjusts the opening degree of the electric control valve according to the judgment result, thereby changing the hot-side water flow rate; realizing automatic adjustment of the water volume of the cold-side water in the heat exchanger, reducing the hot-side water consumption during low-load operation of the equipment, and reducing energy consumption;

[0038] 2. The sealing condition between the heat exchange plates is detected by the sealing monitoring module, and leakage between the heat exchange plates can be detected in time; the internal liquid is buffered by the buffer module, and when the control valve or the electric control valve is quickly closed, the damage to the heat exchanger caused by the water hammer effect is reduced. Brief Description of the Drawings

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings without creative efforts.

[0040] Figure 1 is a three-dimensional view of a plate heat exchanger capable of intelligent adjustment according to the present invention Figure 1 ;

[0041] Figure 2 is a front view of a plate heat exchanger capable of intelligent adjustment according to the present invention;

[0042] Figure 3 is a schematic diagram of the heat exchange structure of a plate heat exchanger capable of intelligent adjustment;

[0043] Figure 4It is the adjustment flow chart of the present invention;

[0044] Figure 5 It is the schematic structural diagram of the heat exchange plate;

[0045] Figure 6 It is the three-dimensional view of a plate heat exchanger with intelligent adjustment of the present invention Figure 2 ;

[0046] Figure 7 It is along Figure 2 The three-dimensional view after partially removing the structure along the A-A direction in;

[0047] Figure 8 It is Figure 7 The enlarged view at D in;

[0048] Figure 9 It is Figure 5 The enlarged view at C in;

[0049] Figure 10 It is along Figure 2 The three-dimensional view after partially removing the structure along the B-B direction in.

[0050] The reference numerals in the figure respectively represent:

[0051] 1. Heat exchanger main body; 11. Heat exchange plate; 12. Double-layer sealing structure; 121. First sealing rubber ring; 122. Second sealing rubber ring; 21. Cold-side water inlet pipe; 22. Cold-side water outlet pipe; 23. Hot-side water inlet pipe; 24. Hot-side water outlet pipe; 31. Control valve; 32. Electric control valve; 4. Controller; 5. Detection module; 51. Pressure sensor; 52. Temperature sensor; 53. Flow sensor; 6. Protection mechanism; 61. Seal monitoring module; 611. Annular confluence groove; 612. L-shaped confluence channel; 613. Transparent observation plate; 62. Buffer module; 621. Connecting pipe; 622. Buffer barrel; 623. Buffer airbag; 624. Vent pipe; 625. Spring damper; 7. Adsorption type filtering mechanism; 71. Filter box; 711. Water inlet channel; 712. Water passing chamber; 713. Cleaning chamber; 72. Adsorption module; 721. Rotating motor; 722. Installation shaft; 723. Rotating copper plate; 724. Water passing hole; 725. Electric heater; 73. Cleaning module; 731. Drain valve; 732. High-pressure nozzle; 74. Adjustable sealing structure; 741. Cylinder; 742. Moving frame; 743. Conforming sealing gasket. Specific embodiments

[0052] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only a part rather than all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0053] In the following description, "left", "right", "front", "rear", "upper", and "lower" mentioned are oriented in the perspective direction of the front view.

[0054] Embodiment 1: In some embodiments, please refer to Figures 1-5 of the accompanying drawings of the specification. A plate heat exchanger capable of intelligent adjustment includes a heat exchanger main body 1, a control valve 31, an electric control valve 32, a controller 4, a detection module 5, a protection mechanism 6, and an adsorption type filtering mechanism 7.

[0055] A plurality of heat exchange plates 11 are evenly arranged at equal intervals on the heat exchanger main body 1; a cold side inlet pipe 21, a cold side outlet pipe 22, a hot side inlet pipe 23, and a hot side outlet pipe 24 are fixedly installed on the heat exchanger main body 1; the controller 4 is arranged on the side of the heat exchanger main body 1.

[0056] As Figure 2 shown, the detection module 5 includes a pressure sensor 51, a temperature sensor 52, and a flow sensor 53; control valves 31, pressure sensors 51, and temperature sensors 52 are fixedly installed on the cold side inlet pipe 21, the cold side outlet pipe 22, the hot side inlet pipe 23, and the hot side outlet pipe 24; flow sensors 53 are fixedly installed on the cold side outlet pipe 22 and the hot side inlet pipe 23; an electric control valve 32 is fixedly installed on the cold side outlet pipe 22; the controller 4 is electrically connected to the pressure sensor 51, the temperature sensor 52, the flow sensor 53, and the electric control valve 32.

[0057] The protection mechanism 6 is installed on the heat exchange plate 11 and the cold side inlet pipe 21, and the adsorption type filtering mechanism 7 is installed on the hot side inlet pipe 23.

[0058] The controller 4 has two states: automatic adjustment and manual adjustment. When the controller 4 is in the automatic adjustment state, the controller 4 controls the electric control valve 32; when the controller 4 is in the manual adjustment state, the controller 4 does not issue an instruction to the electric control valve 32.

[0059] The readings of the pressure sensor 51, the temperature sensor 52, and the flow sensor 53 on the hot side inlet pipe 23 are sequentially recorded as P3, T4, and F5.

[0060] The readings of the pressure sensor 51, temperature sensor 52, and flow sensor 53 on the cold-side outlet water pipe 22 are sequentially recorded as P6, T7, and F8;

[0061] The readings of the pressure sensor 51 and temperature sensor 52 on the cold-side inlet water pipe 21 are sequentially recorded as P9 and T10;

[0062] The readings of the pressure sensor 51 and temperature sensor 52 on the hot-side outlet water pipe 24 are sequentially recorded as P11 and T12.

[0063] As Figure 2 and Figure 5 shown, the protection mechanism 6 includes a seal monitoring module 61 and a buffer module 62. The seal monitoring module 61 is arranged on the side of the heat exchange plate 11, and the buffer module 62 is installed on the cold-side inlet water pipe 21.

[0064] In this embodiment, when the intelligent adjustable plate heat exchanger is working properly, the cold-side inlet water pipe 21 is the cold-side inflow end, and the cold-side outlet water pipe 22 is the cold-side outflow end; the hot-side inlet water pipe 23 is the hot-side inflow end, and the hot-side outlet water pipe 24 is the hot-side outflow end; during use, the cold-side water flows through the cold-side inlet water pipe 21 into the cold-side inlet water pipe 21, and the hot-side water flows through the hot-side inlet water pipe 23 into the hot-side inlet water pipe 23. Then, after the cold-side water and the hot-side water flow through the adjacent heat exchange plates 11 for heat exchange, the cold-side water flows out through the cold-side outlet water pipe 22, and the hot-side water flows out through the hot-side outlet water pipe 24; during this process, the pressure, temperature, and flow rate of the cold-side water and the hot-side water are respectively recorded by the pressure sensor 51, temperature sensor 52, and flow sensor 53;

[0065] where P3 is the measured water pressure in the hot-side inlet water pipe 23; T4 is the measured water temperature in the hot-side inlet water pipe 23; F5 is the measured flow rate in the hot-side inlet water pipe 23; P6 is the measured water pressure in the cold-side outlet water pipe 22; T7 is the measured water temperature in the cold-side outlet water pipe 22; F8 is the measured flow rate in the cold-side outlet water pipe 22; P9 is the measured water pressure in the cold-side inlet water pipe 21; T10 is the measured water temperature in the cold-side inlet water pipe 21; P11 is the measured water pressure in the hot-side outlet water pipe 24; T12 is the measured water temperature in the hot-side outlet water pipe 24; P3, T4, F5, P6, T7, F8, P9, T10, P11, and T12 are all transmitted to the controller 4 in real time; the controller 4 makes a judgment based on the collected data and adjusts the opening degree of the electric control valve 32 according to the judgment result, thereby changing the hot-side water flow rate; realizing the automatic adjustment of the cold-side water volume of the heat exchanger, reducing the hot-side water consumption during the low-load operation of the equipment, and reducing energy consumption.

[0066] During use, the sealing condition between the heat exchange plates 11 is detected by the sealing monitoring module 61, and leakage between the heat exchange plates 11 is detected in a timely manner; the internal liquid is buffered by the buffer module 62 to reduce the damage to the heat exchanger caused by the water hammer effect when the control valve 31 or the electric control valve 32 is quickly closed.

[0067] Embodiment 2: In some embodiments, as Figures 1-5 shown, as a preferred embodiment of the present invention, a method for adjusting an intelligent adjustable plate heat exchanger includes the following steps:

[0068] Step 1: When starting to run, select the state of the controller 4. If the manual state is selected, the next step is not performed; if the automatic state is selected, the next step is performed;

[0069] Step 2: The data measured by the pressure sensor 51, the temperature sensor 52, and the flow sensor 53 are transmitted to the controller 4 in real time; the controller 4 makes a judgment based on the collected data to determine whether the end difference T12 - T10 of the heat exchanger is within 2°C - 8°C; if so, step 3 is executed, otherwise, return to step 1;

[0070] Step 3: Whether the water pressure drop on the cold side of the heat exchanger is less than 0.05 mPa. If so, step 4 is executed, otherwise, return to step 1;

[0071] Step 4: Whether the temperature difference between the inlet and outlet water on the cold side is less than 7°C. If so, adjust the opening of the electric control valve 32 to make the flow rate of the electric control valve 32 smaller; if not, adjust the opening of the electric control valve 32 to make the flow rate of the electric control valve 32 larger;

[0072] Step 5: After waiting for time X, return to step 1.

[0073] The adjustment step size and frequency of adjusting the electric control valve 32 mentioned in step 4 are as follows:

[0074] If 1°C < T10 - T7 ≤ 3°C, the opening of the electric control valve 32 is adjusted to be 5% smaller;

[0075] If 3°C < T10 - T7 ≤ 5°C, the opening of the electric control valve 32 is adjusted to be 3% smaller;

[0076] If 5°C < T10 - T7 ≤ 7°C, the opening of the electric control valve 32 is adjusted to be 1% smaller;

[0077] If 7°C < T10 - T7 ≤ 8°C, the opening of the electric control valve 32 is adjusted to be 5% larger;

[0078] If 8°C < T10 - T7 ≤ 10°C, the opening of the electric control valve 32 is adjusted to be 3% larger;

[0079] If T10 - T7 > 10°C, the opening of the electric control valve 32 is adjusted to be 1% larger.

[0080] The waiting time X is set to one minute.

[0081] Embodiment 3: In some embodiments, as a preferred embodiment of the present invention, as Figure 5 , Figure 9 and Figure 10 shown, a double-layer sealing structure 12 is provided between the heat exchange plates 11. The double-layer sealing structure 12 includes a first sealing rubber ring 121 and a second sealing rubber ring 122; the first sealing rubber ring 121 and the second sealing rubber ring 122 are fixedly installed on the outer side of the circular groove on the heat exchange plate 11;

[0082] The seal monitoring module 61 includes a transparent observation plate 613. An annular confluence groove 611 is provided between the first sealing rubber ring 121 and the second sealing rubber ring 122. An L-shaped confluence channel 612 communicating with the annular confluence groove 611 is provided on the side of the heat exchange plate 11; a transparent observation plate 613 covering the L-shaped confluence channel 612 is fixedly installed on the side of the heat exchange plate 11;

[0083] The buffer module 62 includes a connecting pipe 621, a buffer barrel 622, a buffer airbag 623, an emptying pipe 624 and a spring damper 625. One end of the connecting pipe 621 is fixedly connected to the cold-side water inlet pipe 21, and the other end of the connecting pipe 621 is fixedly connected to the buffer barrel 622; a buffer airbag 623 is fixed in the buffer barrel 622, and the buffer airbag 623 communicates with the connecting pipe 621; a mounting plate is fixedly installed on the side of the buffer airbag 623 away from the connecting pipe 621, and a plurality of spring dampers 625 are fixedly installed between the mounting plate and the buffer barrel 622; the emptying pipe 624 is fixedly installed on the upper side of the buffer barrel 622.

[0084] As Figure 1 and Figures 6-8 shown, the adsorption filtration mechanism 7 includes a filtration box 71, an adsorption module 72, a cleaning module 73 and an adjustable sealing structure 74. The filtration box 71 is fixedly installed on the hot-side water inlet pipe 23. An inlet channel 711, a water passing chamber 712 and a cleaning chamber 713 are provided in the filtration box 71; the inlet channel 711 communicates with the hot-side water inlet pipe 23; the water passing chamber 712 is located in the middle of the inlet channel 711; the adsorption module 72 is installed on the filtration box 71, and the cleaning module 73 is installed on the filtration box 71 and communicates with the cleaning chamber 713; adjustable sealing structures 74 are symmetrically installed on the filtration box 71;

[0085] The adsorption module 72 includes a rotating motor 721, a mounting shaft 722, a rotating copper plate 723, a water hole 724 and an electric heater 725. The rotating motor 721 is fixedly mounted on the filter box 71, and the mounting shaft 722 is rotatably mounted in the middle of the filter box 71. The output end of the rotating motor 721 is fixedly connected to one end of the mounting shaft 722; the other end of the mounting shaft 722 passes through the filter box 71, and a cavity is provided inside the mounting shaft 722; the electric heater 725 is fixedly mounted on the filter box 71, and the heating resistance wire of the electric heater 725 is located in the cavity of the mounting shaft 722; the middle part of the mounting shaft 722 is located in the filter box 71 and a rotating copper plate 723 is fixedly mounted thereon; the rotating copper plate 723 is provided with water holes 724 in a circular array; the surface of the rotating copper plate 723 is provided with rough texture;

[0086] The cleaning module 73 includes a discharge valve 731 and a high-pressure nozzle 732. The discharge valve 731 connected to the cleaning chamber 713 is symmetrically fixedly installed on the lower side of the filter box 71; the high-pressure nozzle 732 is symmetrically fixedly installed on the filter box 71, and the high-pressure nozzle 732 is located in the cleaning chamber 713; the high-pressure nozzle 732 is connected to an external pump for conveying cleaning liquid;

[0087] The adjustable sealing structure 74 includes a cylinder 741, a movable frame 742 and a conformal sealing gasket 743; the cylinder 741 is fixedly mounted on the filter box 71, the movable frame 742 is located in the cleaning bin 713, and the movable frame 742 is fixedly connected to the output end of the cylinder 741; a conformal sealing gasket 743 conforming to the cross-sectional profile of the discharge valve 731 is fixedly mounted on the outer side of the movable frame 742.

[0088] In this embodiment, when the sealing monitoring module 61, the buffer module 62 and the adsorption filter mechanism 7 work normally, the liquid flow between the heat exchange plates 11 is blocked by the first sealing rubber ring 121 and the second sealing rubber ring 122. In normal use, there is no liquid between the first sealing rubber ring 121 and the second sealing rubber ring 122; if the first sealing rubber ring 121 and the second sealing rubber ring 122 leak, the liquid flows through the first sealing rubber ring 121 into the annular confluence groove 611, and then flows into the buffer barrel 622. The condition in the buffer barrel 622 can be observed through the buffer airbag 623 to determine whether there is liquid leakage in the corresponding heat exchange plate 11; when the flow is stable, the spring damper 625 supports the buffer airbag 623;

[0089] When the valve is closed, the liquid in the pipeline impacts reversely and flows through the connecting pipeline 621 into the buffer airbag 623, causing the buffer airbag 623 to expand and compress the spring damper 625; thereby absorbing the impact of the liquid; then the spring damper 625 slowly recovers; thereby absorbing energy and reducing the impact of the liquid on the heat exchanger; the hot-side liquid flows through the hot-side water inlet pipe 23 into the water inlet channel 711, and passes through one side of the rotating copper plate 723 in the water passing chamber 712 through the water inlet channel 711; at this time, the electric heater 725 heats the rotating copper plate 723, making the temperature of the rotating copper plate 723 slightly higher than the temperature of the liquid in the hot-side water inlet pipe 23; the scale in the liquid tends to accumulate on the surface and rough surface of the object with a higher temperature, so the scale in the hot-side water inlet pipe 23 tends to accumulate on the rotating copper plate 723; realizing the adsorption of scale; after using for a period of time, the cylinder 741 drives the moving frame 742 and the conforming gasket 743 to move, isolates the cleaning chamber 713 through the conforming gasket 743, then opens the discharge valve 731 to discharge the liquid in the cleaning chamber 713, sprays the cleaning liquid into the cleaning chamber 713 through the high-pressure nozzle 732, after the cleaning liquid soaks the rotating copper plate 723 for a period of time, the discharge valve 731 discharges the liquid in the cleaning chamber 713 again, and then blows and washes the rotating copper plate 723 through the high-pressure nozzle 732; after the cleaning is completed, the cylinder 741 drives the conforming gasket 743 to reset through the moving frame 742, the rotating motor 721 drives the rotating copper plate 723 to rotate, so that the other side of the rotating copper plate 723 rotates into the cleaning chamber 713, and the cleaned side of the rotating copper plate 723 rotates into the water passing chamber 712; the rotating copper plate 723 is cleaned again in the cleaning chamber 713; realizing the cleaning of the rotating copper plate 723 without stopping the machine, ensuring the cleaning efficiency, and reducing the scale in the liquid.

[0090] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An intelligently adjustable plate heat exchanger, comprising a heat exchanger main body (1), a control valve (31), an electric control valve (32), a controller (4), a detection module (5), a protection mechanism (6) and an adsorption type filtering mechanism (7), characterized in that: A plurality of heat exchange plates (11) are evenly arranged at equal intervals on the heat exchanger main body (1); a cold side water inlet pipe (21), a cold side water outlet pipe (22), a hot side water inlet pipe (23) and a hot side water outlet pipe (24) are fixedly installed on the heat exchanger main body (1); the controller (4) is arranged on the side of the heat exchanger main body (1); The detection module (5) includes a pressure sensor (51), a temperature sensor (52) and a flow sensor (53); control valves (31), pressure sensors (51) and temperature sensors (52) are fixedly installed on the cold side water inlet pipe (21), the cold side water outlet pipe (22), the hot side water inlet pipe (23) and the hot side water outlet pipe (24); flow sensors (53) are fixedly installed on the cold side water outlet pipe (22) and the hot side water inlet pipe (23); an electric control valve (32) is fixedly installed on the cold side water outlet pipe (22); the controller (4) is electrically connected to the pressure sensor (51), the temperature sensor (52), the flow sensor (53) and the electric control valve (32); The protection mechanism (6) is installed on the heat exchange plates (11) and the cold side water inlet pipe (21), and the adsorption type filtering mechanism (7) is installed on the hot side water inlet pipe (23); The protection mechanism (6) includes a seal monitoring module (61) and a buffer module (62), the seal monitoring module (61) is arranged on the side of the heat exchange plate (11), and the buffer module (62) is installed on the cold side water inlet pipe (21); A double-layer seal structure (12) is arranged between the heat exchange plates (11), and the double-layer seal structure (12) includes a first seal ring (121) and a second seal ring (122); the first seal ring (121) and the second seal ring (122) are fixedly installed on the outer side of the circular groove on the heat exchange plate (11); The seal monitoring module (61) includes a transparent observation plate (613), an annular confluence groove (611) is formed between the first seal ring (121) and the second seal ring (122), and an L-shaped confluence channel (612) communicating with the annular confluence groove (611) is formed on the side of the heat exchange plate (11); a transparent observation plate (613) covering the L-shaped confluence channel (612) is fixedly installed on the side of the heat exchange plate (11); The adsorption filtering mechanism (7) comprises a filter box (71), an adsorption module (72), a cleaning module (73) and an adjustable sealing structure (74); the filter box (71) is fixedly mounted on the hot side water inlet pipe (23); a water inlet channel (711), a water transfer chamber (712) and a cleaning chamber (713) are arranged in the filter box (71); the water inlet channel (711) is communicated with the hot side water inlet pipe (23); the water transfer chamber (712) is located in the middle of the water inlet channel (711); the adsorption module (72) is mounted on the filter box (71); the cleaning module (73) is mounted on the filter box (71) and is communicated with the cleaning chamber (713); the adjustable sealing structure (74) is symmetrically mounted on the filter box (71); The adsorption module (72) comprises a rotating motor (721), a mounting shaft (722), a rotating copper plate (723), water holes (724) and an electric heater (725); the rotating motor (721) is fixedly mounted on the filter box (71); the mounting shaft (722) is rotatably mounted in the middle of the filter box (71); the output end of the rotating motor (721) is fixedly connected to one end of the mounting shaft (722); the other end of the mounting shaft (722) passes through the filter box (71); a cavity is provided inside the mounting shaft (722); the electric heater (725) is fixedly mounted on the filter box (71); a heating resistance wire of the electric heater (725) is located in the cavity of the mounting shaft (722); a rotating copper plate (723) is fixedly mounted in the middle of the mounting shaft (722) in the filter box (71); water holes (724) are provided in a circular array on the rotating copper plate (723); and a rough texture is provided on the surface of the rotating copper plate (723); The cleaning module (73) comprises a discharge valve (731) and a high-pressure nozzle (732); the discharge valve (731) connected to the cleaning chamber (713) is symmetrically fixedly installed on the lower side of the filter box (71); the high-pressure nozzle (732) is symmetrically fixedly installed on the filter box (71), and the high-pressure nozzle (732) is located in the cleaning chamber (713); the high-pressure nozzle (732) is connected to an external pump for conveying cleaning liquid; The adjustable sealing structure (74) comprises a cylinder (741), a movable frame (742) and a conformable sealing gasket (743); the cylinder (741) is fixedly mounted on the filter box (71); the movable frame (742) is located in the cleaning bin (713); the movable frame (742) is fixedly connected to the output end of the cylinder (741); and a conformable sealing gasket (743) conforming to the cross-sectional profile of the discharge valve (731) is fixedly mounted on the outer side of the movable frame (742).

2. The intelligent adjustable plate heat exchanger according to claim 1, wherein The controller (4) is provided with two states: automatic adjustment and manual adjustment. When the controller (4) is in the automatic adjustment state, the controller (4) controls the electric control valve (32); when the controller (4) is in the manual adjustment state, the controller (4) does not issue any command to the electric control valve (32).

3. The intelligent adjustable plate heat exchanger according to claim 2, wherein The buffer module (62) includes a connecting pipe (621), a buffer barrel (622), a buffer airbag (623), an emptying pipe (624) and a spring damper (625). One end of the connecting pipe (621) is fixedly connected to the cold-side water inlet pipe (21), and the other end of the connecting pipe (621) is fixedly connected to the buffer barrel (622). A buffer airbag (623) is fixedly installed in the buffer barrel (622), and the buffer airbag (623) is communicated with the connecting pipe (621). A mounting plate is fixedly installed on the side of the buffer airbag (623) away from the connecting pipe (621), and a plurality of spring dampers (625) are fixedly installed between the mounting plate and the buffer barrel (622). The emptying pipe (624) is fixedly installed on the upper side of the buffer barrel (622).

4. An adjustment method, which utilizes the intelligent adjustable plate heat exchanger according to claim 2, characterized in that It includes the following steps: Step 1: When starting to run, select the state of the controller (4). If the manual state is selected, the next step is not carried out; if the automatic state is selected, the next step is carried out; Step 2: The data measured by the pressure sensor (51), the temperature sensor (52) and the flow sensor (53) are transmitted to the controller (4) in real time. The controller (4) makes a judgment based on the collected data to determine whether the end difference T12 - T10 of the heat exchanger is within 2°C - 8°C. If so, step 3 is executed; if not, return to step 1; Step 3: Determine whether the water pressure drop P9 - P6 on the cold side of the heat exchanger is less than 0.05 mPa. If so, execute step 4; if not, return to step 1; Step 4: Determine whether the temperature difference T10 - T7 between the inlet and outlet water on the cold side is less than 7°C. If so, adjust the opening of the electric control valve (32) to make the flow rate of the electric control valve (32) smaller; if not, adjust the opening of the electric control valve (32) to make the flow rate of the electric control valve (32) larger; Step 5: After waiting for a time X, return to step 1; The readings of the pressure sensor (51) and the temperature sensor (52) on the cold-side outlet pipe (22) are recorded as P6 and T7 in sequence; The readings of the pressure sensor (51) and the temperature sensor (52) on the cold-side inlet pipe (21) are recorded as P9 and T10 in sequence; The readings of the temperature sensor (52) on the hot-side outlet pipe (24) are recorded as P11 and T12.

5. The adjustment method according to claim 4, characterized in that, The adjustment step size and frequency of the electric control valve (32) mentioned in step 4 are as follows: If 1°C < T10 - T7 ≤ 3°C, the opening of the electric control valve (32) is adjusted to be 5% smaller; If 3°C < T10 - T7 ≤ 5°C, the opening of the electric control valve (32) is adjusted to be 3% smaller; If 5°C < T10 - T7 ≤ 7°C, the opening of the electric control valve (32) is adjusted to be 1% smaller; If 7°C < T10 - T7 ≤ 8°C, the opening of the electric control valve (32) is adjusted to be 5% larger; If 8°C < T10 - T7 ≤ 10°C, the opening of the electric control valve (32) is adjusted to be 3% larger; If T10 - T7 > 10°C, the opening of the electric control valve (32) is adjusted to be 1% larger; The reading of the temperature sensor (52) on the cold-side outlet pipe (22) is recorded as T7; The reading of the temperature sensor (52) on the cold-side inlet pipe (21) is recorded as T10.

6. The adjustment method according to claim 5, characterized in that The waiting time X mentioned in step 5 is set to one minute.

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