Surface treatment heating, cooling and refrigerating waste heat recovery system and method

Abstract

The invention discloses a surface treatment heating, cooling and refrigerating waste heat recovery system and method, and relates to the field of waste heat recovery, and the system comprises a double-source high-temperature heat pump unit which is used for refrigerating a heat preservation and heat storage water tank and heating a heat supply water tank to a first set temperature when the temperature of the heat preservation and heat storage water tank and the temperature of a liquid tank are equal; when the temperature of the water in the heat preservation and heat storage water tank is smaller than a second set temperature, heat is taken from the cooling water tank to the heat supply water tank, and heat is taken from air to heat the water in the heat supply water tank when the waste heat of the cooling water tank is insufficient; the water source heat pump unit is used for absorbing heat in the cooling water tank and heat in the process tank and heating the heat supply water tank; the electric valves of the inlet pipeline and the outlet pipeline of the heat preservation and heat storage water tank are controlled to be closed, the electric valves of the inlet pipeline and the outlet pipeline of the cooling water tank are controlled to be opened, cooling water in the cooling water tank is pumped into the first shell-and-tube heat exchanger for circulating cooling, and energy conservation, emission reduction and consumption reduction are achieved.

Description

Technical Field

[0001] The present application relates to the field of waste heat recovery, and particularly to a surface treatment heating, cooling, and refrigeration waste heat recovery system and method. Background Art

[0002] In recent years, energy conservation and emission reduction have become issues that need to be emphasized in all fields of production and life. In a nickel-titanium alloy surface treatment workshop, when a chiller, a rectifier, chromium plating, and process tanks are cooled by cooling water, a large amount of heat is generated, and the large amount of heat generated cannot be recovered, resulting in waste of energy. Therefore, there is an urgent need for a surface treatment heating, cooling, refrigeration, and waste heat recovery system and method that can meet the heating, cooling, refrigeration, and heat recovery of the entire surface treatment workshop. Summary of the Invention

[0003] The purpose of the present application is to provide a surface treatment heating, cooling, and refrigeration waste heat recovery system and method, which can meet the heating, cooling, refrigeration, and heat recovery processes of the entire surface treatment workshop, and achieve energy conservation, emission reduction, and consumption reduction.

[0004] To achieve the above purpose, the present application provides the following solutions:

[0005] In a first aspect, the present application provides a surface treatment heating, cooling, and refrigeration waste heat recovery system, including:

[0006] A dual-source high-temperature heat pump unit, including a high-efficiency tank, a first shell-and-tube heat exchanger, an air-source evaporator, a first compressor, and a first gas separator, for: when the heat exchange between the heat preservation hot water tank and the liquid tank reaches the same temperature, refrigerating the heat preservation hot water tank, heating the hot water supply tank to a first set temperature, and supplying heat to the medium-temperature liquid tank; when the temperature of the water in the heat preservation hot water tank is less than a second set temperature, switching the heat pump to extract heat from the cooling water tank to the hot water supply tank. If the waste heat of the cooling water tank is insufficient, starting the fan to extract heat from the air to heat the water in the hot water supply tank;

[0007] A water-source heat pump unit, for: when using the cooling water in the cooling water tank to cool the process tank, absorbing the heat in the cooling water tank and the heat in the process tank, transporting it to the hot water supply tank, and heating the hot water supply tank to a first set temperature to achieve the cooling of the cooling water tank;

[0008] A system for the hot water variable-frequency water pump to input the production line, controlling the electric valves of the inlet pipe and the outlet pipe of the heat preservation hot water tank to be closed, and the electric valves of the inlet pipe and the outlet pipe of the cooling water tank to be opened, and pumping the cooling water in the cooling water tank into the first shell-and-tube heat exchanger for internal circulation cooling.

[0009] Optionally, the surface treatment heating, cooling and refrigeration waste heat recovery system includes a closed cooling tower module, which is used to: when the heat of the cooling water in the cooling water tank cannot be cooled by the water source heat pump unit, or the heat reaches a first set temperature, the heat in the cooling water tank is pumped into the cooling water tank by a water pump for cooling.

[0010] Optionally, the surface treatment heating, cooling and refrigeration waste heat recovery system further includes a refrigerator module, and the refrigerator in the refrigerator module adopts a water-cooled refrigerator unit; the water-cooled refrigerator unit includes a shell and tube heat exchanger, a condenser of the water-cooled refrigerator unit, a second shell and tube heat exchanger, a second compressor, a second gas separator and a four-way valve; the liquid outlet of the second compressor and the liquid inlet of the second gas separator are connected to the four-way valve through a pipeline; the shell and tube heat exchanger and the second shell and tube heat exchanger are connected to the four-way valve;

[0011] The condenser of the water-cooled refrigeration unit is cooled by circulating cooling water in the cooling water tank. The heat in the cooling water tank increases and the tap water takes away the heat through the second shell and tube heat exchanger. When the temperature of the cooling water in the cooling water tank is not less than the third set temperature, the cooling water starts the water source heat pump unit to achieve the purpose of cooling and recover heat to the hot water tank.

[0012] Optionally, the surface treatment heating, cooling and refrigeration waste heat recovery system also includes an electromagnetic energy module, which is used to: the water supply tank provides hot water to the electromagnetic steam generator furnace, and the electromagnetic steam generator heats the hot water into steam; steam is installed in the water supply tank, and in a rapid heating state, steam is used to directly heat the hot water in the water supply tank for heating.

[0013] Optionally, the steam is installed into the hot water tank using the muffler principle.

[0014] Optionally, the surface treatment heating, cooling and refrigeration waste heat recovery system also includes a pure water module, which is used to provide pure water to the hot water tank, the thermal insulation water storage tank, the chilled water tank and the cooling water tank.

[0015] Optionally, the first set temperature is 85°C.

[0016] Optionally, the second set temperature is 20°C.

[0017] Optionally, the third set temperature is 32°C.

[0018] In a second aspect, the present application provides a surface treatment heating, cooling and refrigeration waste heat recovery method, comprising:

[0019] When the insulated hot water storage tank and the liquid tank exchange heat to the same temperature, the insulated hot water storage tank is cooled, the hot water supply tank is heated to the first set temperature, and heat is supplied to the medium-temperature liquid tank; when the temperature of the water in the insulated hot water storage tank is lower than the second set temperature, the heat pump is switched to take heat from the cooling water tank to supply the hot water supply tank. If the residual heat in the cooling water tank is insufficient, the fan is started to take heat from the air to heat the water in the hot water supply tank;

[0020] When the cooling water in the cooling water tank is used to cool the process tank, the heat in the cooling water tank and the process tank is absorbed and transported to the hot water supply tank, and the hot water supply tank is heated to a first set temperature to achieve cooling of the cooling water tank;

[0021] The hot water variable frequency water pump inputs the system of the production line, controls the electric valves of the inlet pipe and outlet pipe of the thermal insulation hot water storage tank to close, and the electric valves of the inlet pipe and outlet pipe of the cooling water tank to open, and pumps the cooling water in the cooling water tank into the first shell and tube heat exchanger for circulation cooling.

[0022] According to the specific embodiments provided in this application, this application discloses the following technical effects:

[0023] The present application provides a surface treatment heating, cooling and refrigeration waste heat recovery system and method, when the insulated hot water storage tank and the liquid tank exchange heat to the same temperature, the insulated hot water storage tank is cooled and the hot water supply tank is heated to a first set temperature; when the temperature of the water in the insulated hot water storage tank is lower than the second set temperature, heat is taken from the cooling water tank to the hot water supply tank, and if the waste heat in the cooling water tank is insufficient, heat is taken from the air to heat the water in the hot water supply tank; a water source heat pump unit is used to: absorb the heat in the cooling water tank and the heat in the process tank to heat the hot water supply tank; control the electric valves of the inlet and outlet pipes of the insulated hot water storage tank to close, and the electric valves of the inlet and outlet pipes of the cooling water tank to open, and pump the cooling water in the cooling water tank into the first shell and tube heat exchanger for circulation cooling, thereby meeting the heating, cooling, freezing and heat recovery processes of the entire surface treatment plant, and achieving energy saving, emission reduction and consumption reduction. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a structural schematic diagram of a surface treatment heating, cooling and refrigeration waste heat recovery system provided in one embodiment of the present application.

[0026] Reference numerals:

[0027] Heat preservation hot water storage tank - 1, hot water supply tank - 2, closed cooling tower module - 3, cooling water tank - 4, pure water module - 5, electromagnetic energy module - 6, dual - source high - temperature heat pump unit - 7, water - cooled chiller - 8, first electric valve - 9 - 1, second electric valve - 9 - 2, third electric valve - 9 - 3, fourth electric valve - 9 - 4, fifth electric valve - 9 - 5, sixth electric valve - 9 - 6, seventh electric valve - 9 - 7, eighth electric valve - 9 - 8, first manual valve - 10 - 1, second manual valve - 10 - 2, third manual valve - 10 - 3, fourth manual valve - 10 - 4, fifth manual valve - 10 - 5, sixth manual valve - 10 - 6, seventh manual valve - 10 - 7, eighth manual valve - 10 - 8, ninth manual valve - 10 - 9, tenth manual valve - 10 - 10, eleventh manual valve - 10 - 11, twelfth manual valve - 10 - 12, thirteenth manual valve - 10 - 13, fourteenth manual valve - 10 - 14, fifteenth manual valve - 10 - 15, sixteenth manual valve - 10 - 16, seventeenth manual valve - 10 - 17, eighteenth manual valve - 10 - 18, nineteenth manual valve - 10 - 19, twentieth manual valve - 10 - 20, twenty - first manual valve - 10 - 21, twenty - second manual valve - 10 - 22, twenty - third manual valve - 10 - 23, twenty - fourth manual valve - 10 - 24, twenty - fifth manual valve - 10 - 25, twenty - sixth manual valve - 10 - 26, twenty - seventh manual valve - 10 - 27, twenty - eighth manual valve - 10 - 28, first water pump - 11 - 1, second water pump - 11 - 2, third water pump - 11 - 3, fourth water pump - 11 - 4, fifth water pump - 11 - 5, sixth water pump - 11 - 6, seventh water pump - 11 - 7, eighth water pump - 11 - 8, ninth water pump - 11 - 9, tenth water pump - 11 - 10, first check valve - 12 - 1, second check valve - 12 - 2, chilled water tank - 13, high - efficiency tank - 14, air - source evaporator - 15, first shell - and - tube heat exchanger - 16, first four - way valve - 17, first compressor - 18, first gas - liquid separator - 19, shell - and - tube heat exchanger - 20, second shell - and - tube heat exchanger - 21, second four - way valve - 22, second compressor - 23, second gas - liquid separator - 24, muffler - 25. Detailed implementation manners

[0028] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without making creative efforts shall fall within the protection scope of the present application.

[0029] To make the above objects, features, and advantages of the present application more obvious and understandable, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] In an exemplary embodiment, as Figure 1 shown, a surface treatment heating, cooling, refrigeration, and waste heat recovery system is provided, including a dual-source high-temperature heat pump unit 7, a water-cooled chiller unit 8, a waste heat recovery module, a closed cooling tower module 3, a chiller module, an electromagnetic energy module 6, and a pure water module 5.

[0031] The dual-source high-temperature heat pump unit 7 includes an efficient tank 14, a first shell-and-tube heat exchanger 16, an air-source evaporator 15, a first compressor 18, a first four-way valve 17, and a first gas separator 19, and is used for: when the temperature of the heat preservation hot water tank 1 is equal to the temperature of the liquid tank after heat exchange, refrigerating the heat preservation hot water tank 1, heating the hot water supply tank 2 to a first set temperature, and supplying heat to the medium-temperature liquid tank; when the temperature of the water in the heat preservation hot water tank 1 is less than the second set temperature, switching the heat pump to extract heat from the cooling water tank 4 to the hot water supply tank 2. If the waste heat of the cooling water tank 4 is insufficient, starting the fan to extract heat from the air to heat the water in the hot water supply tank 2. The second set temperature is 20°C.

[0032] The liquid outlet of the first compressor 18 and the liquid inlet of the first gas separator 19 are connected to the first four-way valve 17 through a pipeline. The liquid outlet of the first gas separator 19 is connected to the first compressor 18 through a pipeline. The efficient tank 14 and the first shell-and-tube heat exchanger 16 are connected to the first four-way valve 17. The efficient tank 14 is also connected to the air-source evaporator 15 through a pipeline. A first electronic expansion valve is provided on the pipeline connecting the efficient tank 14 and the air-source evaporator 15, and the first electronic expansion valve is used to control the flow rate in the pipeline connecting the efficient tank 14 and the air-source evaporator 15. The first shell-and-tube heat exchanger 16 is connected to the air-source evaporator 15 through a pipeline. On the two pipelines connecting the efficient tank 14 and the hot water supply tank 2, the two pipelines near the efficient tank 14 are respectively provided with an eighteenth manual valve 10-18 and a nineteenth manual valve 10-19, and the two pipelines near the hot water supply tank 2 are respectively provided with a fourth manual valve 10-4 and a twenty-sixth manual valve 10-26. The hot water in the hot water supply tank 2 is pumped out by a fifth water pump 11-5 and enters the efficient tank 14 through the fourth manual valve 10-4 and the nineteenth manual valve 10-19 in sequence. The dual-source high-temperature heat pump unit 7 recovers the waste heat of the cooling water tank 4 to the hot water supply tank 2 through a fifth electric valve 9-5 and a twenty-first manual valve 10-21 in sequence, and recovers the waste heat of the cooling water tank 4 to the hot water supply tank 2 through the eighteenth manual valve 10-18 and the twenty-sixth manual valve 10-26 to heat the water in the hot water supply tank 2. The dual-source high-temperature heat pump unit 7 refrigerates the heat preservation hot water tank 1 through a twentieth manual valve 10-20, a sixth electric valve 9-6, and an eighth electric valve 9-8 to recover heat storage or heat the waste heat of the liquid tank.

[0033] On the connecting pipe between the heat preservation hot water storage tank 1 and the cooling water tank 4, a 20th manual valve 10-20, an 8th electric valve 9-8 and a 6th electric valve 9-6 are provided, and the flow direction is as Figure 1 indicated by the arrow in

[0034] Description of the operation mode of the dual-source high-temperature heat pump unit 7:

[0035] 1. Preheating stage during work: First, when the temperature of the heat preservation hot water storage tank 1 and the liquid tank reaches the same temperature through heat exchange, switch to the heat pump to cool the heat preservation hot water storage tank 1, heat the hot water supply tank 2, and supply heat to the medium-temperature liquid tank.

[0036] When the temperature in the heat preservation hot water storage tank 1 drops to the second set temperature, switch the heat pump to take heat from the cooling water tank 4 to the hot water supply tank 2. If the waste heat of the cooling water tank 4 is insufficient, start the fan to take some heat from the air for supplement.

[0037] If the temperature of the hot water supply tank 2 has reached and the temperature of the cooling water tank 4 gradually rises, start the fan to let the fins dissipate heat for the cooling water tank 4.

[0038] 2. Waste heat recovery mode when getting off work: First, the liquid tank and the heat preservation hot water storage tank 1 perform circulating heat exchange. When the temperature difference between the liquid tank and the heat preservation hot water storage tank 1 is the same, switch to the heating mode. Then, the evaporator in the first shell-and-tube heat exchanger 16 of the dual-source high-temperature heat pump unit 7 refrigerates, and the condenser of the high-efficiency tank 14 heats the hot water supply tank 2. Stop the machine when the temperature of the liquid tank drops to 20°C.

[0039] 3. Preheating mode before work: The liquid tank and the heat preservation hot water storage tank 1 circulate to preheat the liquid tank until the temperature difference between the liquid tank and the heat preservation hot water storage tank 1 is the same, and then switch to the heating mode.

[0040] 4. In this application, the system heat pump mainly recovers the waste heat of the cooling water tank 4, and at the same time, it is necessary to ensure that heat energy is provided for the hot water supply tank 2. It is impossible for the cooling and heating amounts of the two systems to be balanced. Therefore, the air source is used to maintain the balance. Specifically, when the waste heat of the cooling water tank 4 is not enough to heat the temperature of the hot water supply tank 2 to the set temperature, the air source evaporator 15 recovers the air, converts the air into steam, and provides heat energy for the hot water supply tank 2.

[0041] The heat preservation hot water storage tank 1 is connected to the liquid tank through the low-temperature liquid tank heating coil pipe, so that the liquid tank circulates with the heat preservation hot water storage tank 1, making the temperatures of the liquid tank and the heat preservation hot water storage tank 1 the same. The water in the heat preservation hot water storage tank 1 reaches the liquid tank through a first low-temperature liquid tank heating coil pipe, and the water in the liquid tank reaches the heat preservation hot water storage tank 1 through a second low-temperature liquid tank heating coil pipe. The first low-temperature liquid tank heating coil pipe is successively provided with a first electric valve 9-1 and a control valve module. The control valve module includes a first connection route and a second connection route. The first connection route successively includes a first manual valve 10-1, a first water pump 11-2 and a first check valve 12-1. The second connection route successively includes a second manual valve 10-2, a second water pump 11-2 and a second check valve 12-2. A second electric valve 9-2 is arranged on the second low-temperature liquid tank heating coil pipe.

[0042] A fourth electric valve 9-4 is arranged on the connecting pipe of the first low-temperature liquid tank heating coil pipe connected to the hot water supply tank 2, and a third electric valve 9-3 is arranged on the connecting pipe of the second low-temperature liquid tank heating coil pipe connected to the hot water supply tank 2.

[0043] A seventh electric valve 9-7, a ninth water pump 11-9 and a twenty-first manual valve 10-21 are arranged on the connecting pipe from the heat preservation hot water storage tank 1 to the first shell and tube heat exchanger 16. A twentieth manual valve 10-20 and a sixth electric valve 9-6 are arranged on the connecting pipe from the first shell and tube heat exchanger 16 to the heat preservation hot water storage tank 1.

[0044] The cooling water in the hot water supply tank 2 is heated by the air energy to 85°C through circulation and stops when the temperature of the hot water supply tank 2 reaches the first set temperature. The control valve module of the hot water supply tank 2 pumps the hot water into the nickel-titanium alloy production line and stops when the hot water in each tank is heated to the process set temperature of the tank. The flow rates of the first water pump 11-2 and the second water pump 11-2 in the control valve module are different. Each tank pipeline is equipped with valves and electric valves. When the set temperature is reached, the water pump has a constant frequency and constant pressure of 0.3-0.4 mpa, and the pressure is variable frequency adjustable. The first set temperature is 85°C.

[0045] The water source heat pump unit is used for: when cooling the process tank with the cooling water in the cooling water tank 4, absorbing the heat in the cooling water tank 4 and the heat in the process tank, transporting it to the hot water supply tank 2, and heating the hot water supply tank 2 to the first set temperature to realize the cooling of the cooling water tank 4.

[0046] When the chiller, rectifier, chromium plating and process tank are cooled with cooling water, a large amount of heat will be generated. The heat in the cooling water tank 4 is pumped into the water source heat pump unit by the water pump for cooling. The heat absorbed by the water source heat pump is transferred to the hot water supply tank 2 to achieve the cooling of the cooling water tank 4 and realize the recycling of heat. The hot and cold exchange is repeated in a cycle.

[0047] The hot water variable frequency water pump inputs the system of the production line, controls the electric valves of the inlet pipe and outlet pipe of the thermal insulation water storage tank 1 to be closed, that is, the sixth electric valve 9-6 and the seventh electric valve 9-7 are closed, and the electric valves of the inlet pipe and outlet pipe of the cooling water tank 4 are opened, that is, the fifth electric valve 9-5 and the eighth electric valve 9-8 are closed, and the cooling water in the cooling water tank 4 is pumped into the first shell and tube heat exchanger 16 for circulation cooling.

[0048] The closed cooling tower module 3 is used to: when the heat of the cooling water in the cooling water tank 4 cannot be cooled by the water source heat pump unit, or the heat reaches the first set temperature, the heat in the cooling water tank 4 is pumped into the cooling water tank 4 by the water pump for cooling. The closed cooling tower module 3 includes a closed cooling tower water tank and a closed cooling tower coil.

[0049] When the heat of the cooling water in the cooling water tank 4 cannot be cooled by the water source heat pump unit, or the heat has met the 85°C requirement of the production line, the heat in the cooling water tank 4 is pumped into the closed cooling tower module 3 by the sixth water pump 11-6 for cooling.

[0050] The pipe connecting the cooling water tank 4 to the closed cooling tower module 3 is equipped with an eighth manual valve 10-8 and a sixth manual valve 10-6. The pipe connecting the closed cooling tower module 3 to the cooling water tank 4 is also equipped with a fifth manual valve 10-5 and a ninth manual valve 10-9. Tap water is pumped into the closed cooling tower module 3 via a third water pump 11-3 and a seventh manual valve 10-7. The third water pump 11-3 is a spray pump.

[0051] Winter room temperature requirements for the production line's cold water wash tank: Utilizing the heat from cooling water tank 4, a 20 m2 non-metallic heat exchanger is installed inside. Tap water is first heated to room temperature by the heat exchanger, absorbing the heat from cooling water tank 4. The water is then piped to the production line's wash tank replenishment system.

[0052] The freezer in the freezer module adopts a water-cooled freezer unit 8; the water-cooled freezer unit 8 includes a shell and tube heat exchanger 20, a second shell and tube heat exchanger 21, a second compressor 23, a second gas separator 24 and a second four-way valve 22; the liquid outlet of the second compressor 23 and the liquid inlet of the second gas separator 24 are connected to the second four-way valve 22 through a pipeline; the shell and tube heat exchanger 20 and the second shell and tube heat exchanger 21 are connected to the second four-way valve 22.

[0053] The condenser in the water-cooled refrigeration unit 8 is cooled by circulating cooling water in the cooling water tank 4. The heat in the cooling water tank 4 increases, and the tap water takes away the heat through the second shell and tube heat exchanger 21. When the temperature of the cooling water in the cooling water tank 4 is not less than the third set temperature, the cooling water starts the water source heat pump unit to achieve the purpose of cooling, and recovers heat to the hot water supply tank 2.

[0054] The eleventh manual valve 10-11 is opened, and the fourth water pump 11-4 pumps the cooling water in the cooling water tank 4 into the pipeline where the eleventh manual valve 10-11 is located to cool the water-cooled rectifier. The heat of the water-cooled rectifier is recovered to the cooling water tank 4 through the pipeline where the tenth manual valve 10-10 is located.

[0055] The chiller uses a water-cooled chiller unit 8. The condenser of the water-cooled chiller unit 8 is in the shell-and-tube heat exchanger 20. The condenser is cooled by circulating the cooling water in the cooling water tank 4. When the heat in the cooling water tank 4 increases and the tap water takes away the heat through the heat exchanger and the temperature ≥ the third set temperature, the cooling water starts the water source heat pump unit to achieve the purpose of cooling and recover the heat to the hot water supply tank 2. The freezing water tank 13 is prepared with 40% ethylene glycol + pure water, and the freezing water in the freezing water tank 13 is cooled to the fourth set temperature. Through one standby variable frequency water pump, the freezing water is pumped into each tank of the anodic oxidation line for cooling. Keep the pipeline pressure ≤ 0.3 - 0.4 Mpa variable frequency adjustable. The third set temperature is 32 °C, and the fourth set temperature is -12 °C.

[0056] A twenty-second manual valve 10-22 and a fourteenth manual valve 10-14 are provided on the connecting pipeline from the shell-and-tube heat exchanger 20 to the cooling water tank 4. A fifteenth manual valve 10-15, a seventh water pump 11-7 and a twenty-fourth manual valve 10-24 are provided from the cooling water tank 4 to the shell-and-tube heat exchanger 20.

[0057] A twenty-third manual valve 10-23 is provided on the connecting pipeline from the second shell-and-tube heat exchanger 21 to the freezing water tank 13. A tenth water pump 11-10 and a twenty-fifth manual valve 10-25 are provided on the connecting pipeline from the freezing water tank 13 to the second shell-and-tube heat exchanger 21.

[0058] The coolant in the freezing water tank 13 goes to cool the liquid tank through the pipeline where the eighth water pump 11-8 is located.

[0059] Waste heat recovery module: After work, the hot water variable frequency water pump inputs the production line system. The electric valves at the inlet and outlet pipelines of the hot water supply tank 2 are closed, and the electric valves at the inlet and outlet of the cooling water are opened. The cooling water is pumped into the first shell-and-tube heat exchanger 16 for internal circulation cooling. The heat in the tank is brought back to the cooling water tank 4, and the water source heat pump unit converts the heat of the cooling water into hot water at the first set temperature and enters the heat preservation hot water storage tank 1. When the heat in the heat preservation hot water storage tank reaches the first set temperature, the water source heat pump unit is closed. The heat in the tank drops to the process temperature of the next day's weather forecast temperature + 5 °C, achieving the effect of energy conservation and emission reduction, preventing the heat loss of the process tank. At the same time, it solves the acid mist corrosion of the nickel-titanium alloy production line and ensures the service life of the steel structure of the workshop.

[0060] The electromagnetic energy module 6 is used for: the hot water supply tank 2 supplies hot water to the inside of the electromagnetic steam generator furnace, and the electromagnetic steam generator heats the hot water into steam; the steam is installed in the hot water supply tank 2, and in the state of rapid temperature rise, the steam directly flushes the hot water in the hot water supply tank 2 for heating.

[0061] When the temperature of the hot water supply tank 2 is insufficient, heat is supplemented through the electromagnetic energy module 6. The electromagnetic energy module 6 obtains water through the connecting pipeline with the pure water module 5, heats the obtained water to get steam, and the steam output by the electromagnetic energy module 6 is transported to the hot water supply tank 2 through the connecting pipeline where the twenty-seventh manual valve 10-27 and the third manual valve 10-3 are located, and its steam temperature is 135-170 °C. The steam output by the electromagnetic energy module 6 is also used to heat the high-temperature liquid tank.

[0062] The hot water in the hot water supply tank 2 is used to supply hot water to the inside of the electromagnetic steam generator furnace, and is heated into steam through electromagnetic induction. The upper limit of the steam pressure is 0.7 MP, which is used for heating the tank body above 70 °C. At the same time, the steam is installed in the hot water supply tank 2 by using the principle of the muffler 25. In the state of rapid temperature rise, the steam can directly flush the hot water for heating. That is, a muffler 25 is provided in the hot water supply tank 2. Steam heating: The steam source provided by the electromagnetic energy module 6 heats the tank body of the production line above 70 °C.

[0063] The pure water module 5 is used to supply pure water to the hot water supply tank 2, the heat preservation hot water storage tank 1, the freezing water tank 13 and the cooling water tank 4.

[0064] The electromagnetic energy module 6, the hot water supply tank 2, the heat preservation hot water storage tank 1, the cooling water tank 4 and the pure water module 5 are on a connecting pipeline. On the connecting pipeline between the pure water module 5 and the hot water supply tank 2, a thirteenth manual valve 10-13 and a sixteenth manual valve 10-16 are provided. On the connecting pipeline between the pure water module 5 and the heat preservation hot water storage tank 1, a thirteenth manual valve 10-13 and a twelfth manual valve 10-12 are provided. On the connecting pipeline between the pure water module 5 and the electromagnetic energy module 6, a thirteenth manual valve 10-13 and a seventeenth manual valve 10-17 are provided. On the connecting pipeline between the pure water module 5 and the cooling water tank 4, a thirteenth manual valve 10-13 and a twenty-eighth manual valve 10-28 are provided.

[0065] The pure water module 5 utilizes the supply of tap water, extracts pure water through deionized water entering the reverse osmosis membrane, and supplies it to the hot water supply tank 2, the heat preservation hot water storage tank 1, the freezing water tank 13, and the cooling water tank 4, preventing the calcium and magnesium ions in the tap water and groundwater supplied to the cooling water at the production line location from being too high, which may cause pollution to the leakage of the heat exchanger in the process tank of the production line. Preventing pipeline fouling and equipment fouling, which brings difficulties in cleaning.

[0066] Through the above-mentioned modules, the heating, cooling, refrigeration, and heat recovery of the entire surface treatment workshop are satisfied, achieving energy conservation, emission reduction, and consumption reduction. Flow meters, intelligent water meters, pressure sensors, and an ERP+MES+automatic control system are adopted to realize the entire heating and recovery process.

[0067] Based on the same inventive concept, the embodiments of the present application also provide a surface treatment heating, cooling, refrigeration, and waste heat recovery method for implementing the surface treatment heating, cooling, refrigeration, and waste heat recovery system involved above. The solution for solving the problem provided by this method is similar to the solution recorded in the above system. Therefore, the specific limitations in one or more embodiments of the surface treatment heating, cooling, refrigeration, and waste heat recovery method provided below can refer to the limitations on the surface treatment heating, cooling, refrigeration, and waste heat recovery system in the above text, and will not be elaborated here.

[0068] In an exemplary embodiment, the present application provides a surface treatment heating, cooling, refrigeration, and waste heat recovery method, including:

[0069] When the temperature of the heat preservation hot water tank 1 and the liquid tank is equal after heat exchange, cool the heat preservation hot water tank 1, heat the hot water supply tank 2 to the first set temperature, and supply heat to the medium-temperature liquid tank; when the temperature of the water in the heat preservation hot water tank 1 is less than the second set temperature, switch the heat pump to extract heat from the cooling water tank 4 to the hot water supply tank 2. If the waste heat of the cooling water tank 4 is insufficient, start the fan to extract heat from the air and heat the water in the hot water supply tank 2.

[0070] When using the cooling water in the cooling water tank 4 to cool the process tank, absorb the heat in the cooling water tank 4 and the heat in the process tank, and transport it to the hot water supply tank 2 to heat the hot water supply tank 2 to the first set temperature to achieve the cooling of the cooling water tank 4.

[0071] For the system where the hot water variable-frequency water pump inputs the production line, control the electric valves of the inlet and outlet pipes of the heat preservation hot water tank 1 to close, and the electric valves of the inlet and outlet pipes of the cooling water tank 4 to open, and pump the cooling water in the cooling water tank 4 into the first shell-and-tube heat exchanger 16 for internal circulation cooling.

[0072] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combinations of these technical features do not conflict, they should all be considered as the scope recorded in this specification.

[0073] In this text, specific examples are used to elaborate on the principles and implementation manners of this application. The description of the above embodiments is only used to help understand the method and its core idea of this application. At the same time, for those of ordinary skill in the art, according to the idea of this application, there will be changes in the specific implementation manners and application scopes. In summary, the content of this specification should not be construed as a limitation to this application.

Claims

1. A surface treatment heating, cooling, refrigeration and waste heat recovery system, characterized in that, The surface treatment heating, cooling, refrigerating and waste heat recovery system includes: A dual-source high-temperature heat pump unit, including an efficient tank, a first shell-and-tube heat exchanger, an air-source evaporator, a first compressor and a first gas separator, which is used for: when the heat exchange between the heat preservation hot water tank and the liquid tank reaches the same temperature, refrigerating the heat preservation hot water tank, heating the hot water supply tank to the first set temperature, and heating the medium-temperature liquid tank; when the temperature of the water in the heat preservation hot water tank is less than the second set temperature, switching the heat pump to take heat from the cooling water tank to the hot water supply tank. If the waste heat of the cooling water tank is insufficient, starting the fan to take heat from the air to heat the water in the hot water supply tank; A water-source heat pump unit, which is used for: when using the cooling water in the cooling water tank to cool the process tank, absorbing the heat in the cooling water tank and the heat in the process tank, transporting it to the hot water supply tank, and heating the hot water supply tank to the first set temperature to achieve the cooling of the cooling water tank; A system in which a hot water variable-frequency water pump inputs the production line, controls the electric valves of the inlet pipe and the outlet pipe of the heat preservation hot water tank to be closed, and the electric valves of the inlet pipe and the outlet pipe of the cooling water tank to be opened, and pumps the cooling water in the cooling water tank into the first shell-and-tube heat exchanger for internal circulation cooling.

2. The surface treatment heating, cooling, refrigeration and waste heat recovery system according to claim 1, wherein The surface treatment heating, cooling, refrigerating and waste heat recovery system includes a closed cooling tower module, and the closed cooling tower module is used for: when the heat of the cooling water in the cooling water tank cannot be cooled by the water-source heat pump unit, or when the heat reaches the first set temperature, cooling the heat pumped into the cooling water tank by the water pump.

3. The surface treatment heating, cooling, refrigeration and waste heat recovery system according to claim 1, wherein The surface treatment heating, cooling, refrigerating and waste heat recovery system further includes a chiller module. The chiller in the chiller module adopts a water-cooled chiller unit; the water-cooled chiller unit includes a casing heat exchanger, a second shell-and-tube heat exchanger, a second compressor, a second gas separator and a four-way valve; the liquid outlet of the second compressor and the liquid inlet of the second gas separator are connected to the four-way valve through a pipeline; the casing heat exchanger and the second shell-and-tube heat exchanger are connected to the four-way valve; The condenser of the water-cooled chiller unit is cooled by the circulating cooling of the cooling water in the cooling water tank. When the heat in the cooling water tank increases, the tap water takes away the heat through the second shell-and-tube heat exchanger. When the temperature of the cooling water in the cooling water tank is not less than the third set temperature, the cooling water starts the water-source heat pump unit to achieve the purpose of cooling and recover the heat to the hot water supply tank.

4. The surface treatment heating, cooling, refrigeration and waste heat recovery system according to claim 1, characterized in that The surface treatment heating, cooling, refrigerating and waste heat recovery system further includes an electromagnetic energy module, and the electromagnetic energy module is used for: the hot water supply tank provides hot water for the electromagnetic steam generator furnace, and the electromagnetic steam generator heats the hot water into steam; the steam is installed in the hot water supply tank, and in the rapid heating state, the steam directly flushes the hot water in the hot water supply tank for heating.

5. The surface treatment heating, cooling, refrigeration and waste heat recovery system according to claim 4, characterized in that, The steam is installed in the hot water supply tank by using the principle of a muffler.

6. The surface treatment heating, cooling, refrigeration and waste heat recovery system according to claim 1, characterized in that The surface treatment heating, cooling, refrigerating and waste heat recovery system further includes a pure water module, and the pure water module is used to provide pure water for the hot water tank, the heat preservation hot water tank, the freezing water tank and the cooling water tank.

7. The surface treatment heating, cooling, refrigeration and waste heat recovery system according to claim 1, wherein, The first set temperature is 85°C.

8. The surface treatment heating, cooling, refrigeration and waste heat recovery system according to claim 1, characterized in that The second set temperature is 20°C.

9. The surface treatment heating, cooling, refrigeration and waste heat recovery system according to claim 3, wherein The third set temperature is 32°C.

10. A surface treatment heating, cooling, refrigeration and waste heat recovery method based on the surface treatment heating, cooling, refrigeration and waste heat recovery system according to any one of claims 1-9, the surface treatment heating, cooling, refrigeration and waste heat recovery method comprising: When the heat exchange between the heat preservation hot water tank and the liquid tank reaches the same temperature, refrigerate the heat preservation hot water tank, heat the hot water supply tank to the first set temperature, and supply heat to the medium-temperature liquid tank; when the temperature of the water in the heat preservation hot water tank is less than the second set temperature, switch the heat pump to extract heat from the cooling water tank to the hot water supply tank. If the waste heat in the cooling water tank is insufficient, start the fan to extract heat from the air to heat the water in the hot water supply tank; When using the cooling water in the cooling water tank to cool the process tank, absorb the heat in the cooling water tank and the heat in the process tank, and transport it to the hot water supply tank to heat the hot water supply tank to the first set temperature to achieve the cooling of the cooling water tank; The hot water variable frequency water pump is input into the system of the production line, the electric valves of the inlet pipe and the outlet pipe of the heat preservation hot water tank are controlled to be closed, and the electric valves of the inlet pipe and the outlet pipe of the cooling water tank are opened, and the cooling water in the cooling water tank is pumped into the first shell and tube heat exchanger for internal circulation cooling.

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