Water source mode waste heat recovery steam generator

Abstract

The invention discloses a water source mode waste heat recovery steam generator, which relates to the technical field of waste heat recovery and heat supply, and comprises a cold water tank, a hot water tank, a barrel body wound with an electromagnetic heating pipe on the periphery, a steam distribution pocket, a heat pump heat exchange unit and a controller, the heat pump heat exchange unit is connected with a cold water tank, a hot water tank and an electromagnetic heating pipe, and a cooling circulating water channel is formed by the cold water tank, the electromagnetic heating pipe and a heat absorption water fluorine heat exchanger on the evaporation side of the heat pump heat exchange unit, so that the heat generated when the electromagnetic heating pipe heats the barrel body is absorbed, and the cooling effect that the electromagnetic heating pipe serves as an electromagnetic heating element is achieved. Water supplemented to the hot water tank from the cold water tank is heated for the first time, and energy recovery and efficient heating are achieved; water in the hot water tank is supplied into the barrel body and is subjected to electromagnetic heating through the electromagnetic heating pipe, the water entering the barrel body is subjected to secondary heating, efficient heating is achieved, the energy efficiency of the whole device is improved, and the problems that existing waste heat recovery and heat supply equipment is high in comprehensive energy efficiency and cost are solved.

Description

Technical Field

[0001] The invention relates to the technical field of waste heat recovery and heating, and in particular to a water source mode waste heat recovery steam generator. Background Art

[0002] By combining waste heat recovery technology with steam generator technology, it is used as an innovative solution in modern heating systems and is mainly used in the industrial field, especially in improving energy efficiency and enhancing environmental protection efforts. With the increase of energy shortages and environmental pressures, this heating technology has received widespread attention in the heating industry, and the technical content and technical threshold are also gradually increasing.

[0003] Current status of technology development: (1) The purpose of waste heat recovery is to recover waste heat from industrial production and convert it into useful energy, thereby reducing energy waste and improving energy efficiency. Waste heat sources usually come from waste gas, waste water or waste heat fluid in industrial production. These heat sources are usually at a high temperature and can be recovered through equipment such as heat exchangers and heat pumps.

[0004] Waste gas heat recovery: Recover the heat in the flue gas through the waste gas heat exchanger to reduce emissions and improve energy utilization efficiency.

[0005] Hot water / steam waste heat recovery: The heat from the wastewater generated in the process is recovered through a high-efficiency heat exchanger, and the recovered energy is used again to heat water or generate steam.

[0006] (2) A steam generator is a device that heats water to high temperature and high pressure to generate steam. It is widely used in power generation, chemical industry, metallurgy, food, aquaculture and other industries. Steam is not only used as a power source, but also can be used for heat exchange, heating and other purposes.

[0007] Conventional steam generator: uses fuel (such as coal, natural gas, oil) as a heat source to heat water to generate steam.

[0008] Waste heat steam generator: uses waste heat from industrial processes (such as high-temperature exhaust gas, waste water, etc.) as a heat source to generate steam through heat exchange, thereby improving energy utilization.

[0009] (3) Waste heat recovery and steam generation, which is mainly reflected in the recovery of heat from industrial waste gas and wastewater to generate steam, thereby achieving resource reuse.

[0010] With the increasingly stringent requirements for energy conservation and environmental protection, the combination of waste heat recovery and steam generators has been continuously developing in technology, mainly in terms of improving thermal efficiency, utilizing low-temperature waste heat, and integrating comprehensive energy management systems. Although the combination of waste heat recovery and steam generation has great potential, in actual applications, the existing equipment combining waste heat recovery and steam (heating) still faces some challenges: high equipment investment cost, high equipment technical requirements, waste heat recovery efficiency needs to be improved, the energy consumption used for steam generation needs to be reduced (energy saving), and maintenance and operation costs are high. Especially for applications involving small users such as aquaculture and heating, it is necessary to further improve the waste heat recovery efficiency, the energy efficiency of steam generation, and reduce the cost of equipment acquisition in order to more widely promote the technology and equipment of waste heat recovery and steam generation (heating).

[0011] In summary, it is found that the prior art has at least the following problems:

[0012] The existing waste heat recovery and heating equipment has the problems of low comprehensive energy efficiency of waste heat recovery and heating and high equipment cost. Summary of the invention

[0013] The purpose of the present invention is to provide a water source mode waste heat recovery steam generator to solve the problems of low comprehensive energy efficiency of waste heat recovery and heating and high equipment cost in existing waste heat recovery and heating equipment.

[0014] The various technical effects that can be produced by the preferred technical solutions among the various technical solutions provided by the present invention are described in detail below.

[0015] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0016] The present invention provides a water source mode waste heat recovery steam generator, comprising a cold water tank and a hot water tank, the cold water tank is connected to an external water source and automatically replenishes water, the hot water tank is connected to the cold water tank or the external water source and automatically replenishes water; and a barrel body, the water inlet of the barrel body is connected to the water supply port of the hot water tank through a water inlet valve and a water supply pump; the top of the barrel body is connected to a steam drum; and a heat pump heat exchanger unit, the heat pump heat exchanger unit comprises a compressor, a hot water fluorine heat exchanger for discharging water, and a hot water fluorine heat exchanger for absorbing water, the evaporation side of the compressor is connected to the hot water fluorine heat exchanger for absorbing water, the hot water fluorine heat exchanger is connected to the hot water fluorine heat exchanger through a throttle valve, and the heat exchange side of the compressor is connected to the hot water fluorine heat exchanger for discharging water; an electromagnetic heating pipe is wound outside the barrel body; the water outlet side of the cold water tank is connected to the water inlet of the hot water fluorine heat exchanger for absorbing water, the water outlet of the hot water fluorine heat exchanger is connected to the water inlet end of the electromagnetic heating pipe, and the water outlet of the electromagnetic heating pipe The end is connected with the water inlet side of the cold water tank; the water inlet and outlet of the hot water fluorine heat exchanger are both connected with the hot water tank; and a controller, the controller is electrically connected to the heat pump heat exchanger unit and the electromagnetic heating tube respectively, and is used to control the heat pump heat exchanger unit to heat the water in the hot water tank and control the power supply of the electromagnetic heating tube to heat the water in the barrel body into water vapor by electromagnetic heating; the electromagnetic heating tube, the cold water tank and the hot water fluorine heat exchanger constitute a cooling circulation water channel, which recovers the heat generated when the electromagnetic heating tube is powered on and stores it in the cold water tank; the heat of the water in the cold water tank is transported to the hot water fluorine heat exchanger through the heat pump heat exchanger unit and the hot water fluorine heat exchanger, and the heat is transported to the hot water tank through the hot water fluorine heat exchanger; the heat pump heat exchanger unit is used to heat the water entering the barrel body for the first time; the electromagnetic heating tube is used to heat the water entering the barrel body for the second time.

[0017] In one of the embodiments, the water inlet side of the cold water tank is connected to an external water source, and a float device is installed in the cold water tank, and the water replenishment action at the water inlet side is controlled by the float device; the water inlet of the hot water tank is connected to the cold water tank or an external water source, and a float device is installed in the hot water tank, and the water replenishment action at the water inlet is controlled by the float device.

[0018] In one of the embodiments, thermometers are installed on both the hot water tank and the cold water tank, and the thermometers are electrically connected to the controller; the hot water tank is provided with a maintenance drain valve; the cold water tank is provided with a thermostatic drain valve; the controller controls the drainage of the thermostatic drain valve by obtaining the water temperature data of the cold water tank, so as to prevent the temperature of the electromagnetic heating tube from being too high and the temperature of the heat pump heat exchanger unit from being too low.

[0019] In one of the embodiments, a high temperature resistant insulation layer is provided between the barrel body and the wound electromagnetic heating tube; and the electromagnetic heating tube is covered with a high temperature resistant insulation sleeve.

[0020] In one of the embodiments, a water level and water thermometer is disposed outside the barrel body, and the water level and water thermometer is electrically connected to the controller to transmit the water temperature and water level information inside the barrel body to the controller.

[0021] In one of the embodiments, a drain valve is installed outside the barrel body, and the drain valve is connected to the barrel body through a drain pipe.

[0022] In one of the embodiments, a steam inlet and a steam outlet are provided on the steam drum, and the steam inlet is connected to the top of the barrel body; a pressure gauge and a safety valve are also installed on the steam drum.

[0023] In one embodiment, a first water outlet is provided on the water outlet side of the cold water tank, and the first water outlet is connected to the water inlet of the hot water fluorine heat exchanger through a water pipe; a second water outlet is also provided on the water outlet side of the cold water tank, and a circulating pump is installed at the second water outlet, and the circulating pump is connected in parallel with the water outlet of the hot water fluorine heat exchanger and the water inlet end of the electromagnetic heating tube through a water pipe.

[0024] In one embodiment, the water channel and the refrigerant channel are both provided in the water-discharging water-fluorine heat exchanger and the water-absorbing water-fluorine heat exchanger; the refrigerant outlet of the compressor is connected to the refrigerant channel inlet of the water-discharging water-fluorine heat exchanger, the refrigerant channel outlet of the water-discharging water-fluorine heat exchanger is connected to the throttle valve, the throttle valve is connected to the refrigerant channel inlet of the water-absorbing water-fluorine heat exchanger, and the refrigerant channel outlet of the water-absorbing water-fluorine heat exchanger is connected to the refrigerant inlet of the compressor; the water inlet of the water channel of the water-discharging water-fluorine heat exchanger is connected to the water outlet of the hot water tank through a water pump, and the water outlet of the water channel of the water-discharging water-fluorine heat exchanger is connected to the water inlet of the hot water tank; the water inlet of the water channel of the water-absorbing water-fluorine heat exchanger is connected to the first water outlet, and the water outlet of the water channel of the water-absorbing water-fluorine heat exchanger is connected in parallel with the water outlet of the circulating pump and the water inlet end of the electromagnetic heating tube.

[0025] In one embodiment, a water cooling unit is installed in the controller, and the water cooling unit is provided with a water inlet heat absorption channel and a water outlet heat release channel; the water inlet heat absorption channel is connected in parallel with the water outlet of the water channel of the water absorption water fluorine heat exchanger, the water outlet of the circulation pump, and the water pipe connected to the water inlet end of the electromagnetic heating tube; the water outlet heat release channel is connected in parallel with the water pipe connected to the water outlet end of the electromagnetic heating tube and the water inlet side of the cold water tank.

[0026] The beneficial effects of the present invention are as follows:

[0027] The present invention designs a water source mode waste heat recovery steam generator, which has the remarkable effects of improving comprehensive energy efficiency, reducing equipment operation costs, improving system reliability and intelligence, and wide applicability.

[0028] (1) Multi-stage heating to improve thermal energy utilization

[0029] The heat pump heat exchanger absorbs the energy of the water in the cold water tank and transfers the heat to the water in the hot water tank, heating the water in the hot water tank for the first time, that is, heating the water entering the barrel for the first time. The high-efficiency heat pump heat exchanger is used to upgrade the low-grade thermal energy to high-grade thermal energy. Then, the electromagnetic heating tube is used to heat the water entering the barrel for the second time, and the water is quickly converted into steam. This hierarchical heating method avoids the energy efficiency loss of heating with a single device and realizes more efficient thermal energy utilization. In addition, the energy efficiency of the heat pump heat exchanger and the electromagnetic heating method of the electromagnetic heating tube are much higher than the traditional fuel or resistance heating energy efficiency, which further improves the energy efficiency of heating and reduces energy consumption.

[0030] Among them, heat recovery is achieved through the cooling circulating water channel. When the electromagnetic heating tube heats the water in the barrel, it will generate heat as a conductor and generate heat loss. The barrel wall of the barrel will also naturally dissipate heat and generate a certain amount of heat loss. Heat exchange is achieved by passing water from the cold water tank into the electromagnetic heating tube of the hollow electromagnetic heating device. The water in the cold water tank recovers the heat generated by the barrel wall and the electromagnetic heating tube of the barrel, and at the same time realizes the necessary cooling of the electromagnetic heating tube, and stores the collected heat in the cold water tank. Subsequently, the heat is transported to the hot water tank through the heat pump heat exchanger unit. Through this heat recovery and transfer process, heat waste is greatly reduced and the overall thermal efficiency of the entire system is improved.

[0031] (2) Reduce energy consumption

[0032] Heat pump technology has efficient energy conversion performance and can significantly reduce electricity or fuel consumption compared to traditional heating methods. At the same time, heat recovery and recycling further reduce the demand for additional heating energy during the heating process. The system adopts an integrated design, which closely combines functional modules such as cold water tanks, hot water tanks, heat pump heat exchange units, and electromagnetic heating tubes to form a machine, which not only improves the compactness of system operation, but also reduces installation and maintenance costs.

[0033] (3) Intelligent adjustment of controller

[0034] The controller can monitor and adjust the operating status of the heat pump heat exchanger unit and electromagnetic heating tube in real time, realize precise heating control, ensure the water heating process is efficient and stable, and avoid waste of electricity and heat energy, or equipment loss due to overheating or overcooling.

[0035] The cold water tank and hot water tank are equipped with automatic water replenishment function, ensuring that the water volume of the waste heat recovery steam generator in water source mode is stable during continuous operation, so that the thermal cycle and steam production of the waste heat recovery steam generator in water source mode are stable, reducing the frequency of manual intervention and improving the stability and operation efficiency of the equipment.

[0036] (5) Multi-module collaborative design. Based on the traditional waste heat recovery and steam generator, the present invention innovatively introduces the combination of heat pump technology, electromagnetic heating and circulating water channels, realizes the optimization and integration of thermal energy utilization, and further improves the energy efficiency of the combination of heat pump technology and electromagnetic heating.

[0037] (6) Dual heating strategy: Through the combined design of heat pump and electromagnetic heating, the characteristics and advantages of different equipment are utilized to combine the high-efficiency and low-power loss (low-cost, heat energy recovery) and low-temperature heating heat pump heat exchanger technology with the high-efficiency and high-temperature heating electromagnetic heating tube technology, as well as the circulating water channel for energy recovery and cooling of the battery heating tube. The hierarchical heating mode is adopted to greatly improve the efficiency of converting water into steam.

[0038] In summary, the water source mode waste heat recovery steam generator provided by the present invention not only effectively solves the problems of low comprehensive energy efficiency and high equipment cost of existing waste heat recovery and heating, but also achieves the goals of high efficiency energy saving, cost optimization and environmental friendliness (heat energy recovery), and has significant technical advantages and broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 2 is a schematic structural diagram of a water source mode waste heat recovery steam generator according to a first embodiment of the present invention;

[0041] Figure 2 It is a schematic structural diagram of a water source mode waste heat recovery steam generator according to the second embodiment of the present invention.

[0042] The reference numerals are as follows:

[0043] 1. Cold water tank; 11. Thermostatic drain valve; 12. Water inlet side; 13. Water outlet side; 131. First water outlet; 132. Second water outlet; 133. Circulation pump;

[0044] 2. Hot water tank; 21. Repair drain valve;

[0045] 3. Barrel; 31. Water inlet valve; 32. Water supply pump; 33. Steam drum; 331. Steam inlet; 332. Steam outlet; 333. Pressure gauge; 334. Safety valve; 335. Steam collecting pipe; 34. Electromagnetic heating pipe; 341. Water inlet end; 342. Water outlet end; 35. Drain valve;

[0046] 4. Heat pump heat exchange unit; 41. Compressor; 42. Discharging hot water fluorine heat exchanger; 43. Absorbing hot water fluorine heat exchanger; 44. Throttle valve;

[0047] 5. Controller; 51. Drive module;

[0048] 61. Float device; 62. Thermometer; 63. Water level and temperature gauge;

[0049] 7. Water cooling unit; 71. Water inlet heat absorption channel; 72. Water outlet heat release channel; 73. Heat recovery module. DETAILED DESCRIPTION

[0050] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0051] In a specific embodiment, a water source mode waste heat recovery steam generator is provided, including a cold water tank, a hot water tank, a barrel body with an electromagnetic heating tube wrapped around the outer circumference, a steam drum, a heat pump heat exchanger unit and a controller; the heat pump heat exchanger unit is connected to the cold water tank, the hot water tank, the electromagnetic heating tube, and a cooling circulation water channel formed by the cold water tank, the electromagnetic heating tube and the water-absorbing water fluorine heat exchanger on the evaporation side of the heat pump heat exchanger unit, so as to absorb the heat generated by the electromagnetic heating tube when heating the barrel body, and realize the cooling effect of the electromagnetic heating tube as an electromagnetic heating element, and perform the first heating on the water replenished from the cold water tank to the hot water tank, so as to realize energy recovery and efficient heating; the water in the hot water tank is supplied to the barrel body for electromagnetic heating by the electromagnetic heating tube, and the water entering the barrel body is heated for the second time, so as to realize efficient heating, and the energy management and utilization design of energy recovery and graded heating are used to further improve the energy efficiency of the entire device, and effectively solve the problems of low comprehensive energy efficiency and high equipment cost of waste heat recovery and heating equipment in existing waste heat recovery and heating equipment.

[0052] In addition, all the contents of the configurations shown in the following embodiments are not necessarily limited to the solutions of the inventions described in the claims.

[0053] The first implementation of a water source mode waste heat recovery steam generator is as follows Figure 1As shown, it includes a cold water tank 1 and a hot water tank 2, wherein the cold water tank 1 is connected to an external water source and automatically replenishes water, and the hot water tank 2 is connected to the cold water tank 1 or an external water source and automatically replenishes water; and a barrel 3, wherein the water inlet of the barrel 3 is connected to the water supply port of the hot water tank 2 through a water inlet valve 31 and a water supply pump 32; the top of the barrel 3 is connected to a steam drum 33; and a heat pump heat exchanger unit 4, wherein the heat pump heat exchanger unit 4 includes a compressor 41, a hot water fluorine heat exchanger 42 for discharging water, and a hot water fluorine heat exchanger 43 for absorbing water, wherein the compressor 41 The evaporation side is connected to the hot water fluorine heat exchanger 43, the hot water fluorine heat exchanger 43 is connected to the hot water fluorine heat exchanger 42 through a throttle valve 44, and the heat exchange side of the compressor 41 is connected to the hot water fluorine heat exchanger 42; an electromagnetic heating tube 34 is wound around the barrel 3; the water outlet side 13 of the cold water tank 1 is connected to the water inlet of the hot water fluorine heat exchanger 43, the water outlet of the hot water fluorine heat exchanger 43 is connected to the water inlet end 341 of the electromagnetic heating tube 34, and the water outlet end 34 2 is connected to the water inlet side 12 of the cold water tank 1; the water inlet and the water outlet of the hot water fluorine heat exchanger 42 are both connected to the hot water tank 2; and a controller 5, the controller 5 is electrically connected to the heat pump heat exchange unit 4 and the electromagnetic heating tube 34 respectively, and is used to control the heat pump heat exchange unit 4 to heat the water in the hot water tank 2, and control the power supply of the electromagnetic heating tube 34 to heat the water in the barrel 3 into water vapor in an electromagnetic heating manner; the electromagnetic heating tube 34, the cold water tank 1 and the hot water fluorine heat exchanger 4 3 constitutes a cooling circulation water channel, recovers the heat generated when the electromagnetic heating tube 34 is powered on, and stores it in the cold water tank 1; the heat of the water in the cold water tank 1 is transferred to the hot water fluorine heat exchanger 42 through the heat pump heat exchanger unit 4 and the hot water fluorine heat exchanger 43, and the heat is transferred to the hot water tank 2 through the hot water fluorine heat exchanger 42; the heat pump heat exchanger unit 4 is used for heating the water entering the barrel 3 for the first time; the electromagnetic heating tube 34 is used for heating the water entering the barrel 3 for the second time. The present invention has the remarkable effects of improving comprehensive energy efficiency, reducing equipment operation costs, improving system reliability and intelligence, and wide applicability by designing a water source mode waste heat recovery steam generator.

[0054] As for the steam drum 33 and the barrel 3 , a steam inlet 331 and a steam outlet 332 are provided on the steam drum 33 , and the steam inlet 331 is connected to the top of the barrel 3 ; a pressure gauge 333 and a safety valve 334 are also installed on the steam drum 33 .

[0055] Specifically, the steam outlet 332 of the steam sub-drum 33 is connected to a gas collecting pipe 335 .

[0056] Among them, the water source mode waste heat recovery steam generator increases the number of barrels, electromagnetic heating tubes, and water inlet valves to multiple according to the steam demand provided by the gas collecting pipe 335, and its water inlet path: the water pipes of multiple water inlet valves are connected in parallel to the water supply pump, and the steam outlets 332 of multiple steam drums 33 are connected in parallel to the gas collecting pipe 335 for steam outlet.

[0057] When in use, the steam outlet 332 is connected to the gas collecting pipe through a pipeline and connected to the heating system of the production line to increase the water vapor for heating; the pressure gauge 333 and the safety valve 334 are electrically connected to the controller 5, and the pressure gauge 333 feeds back the pressure data to the controller 5. When the controller 5 determines that the pressure is too high, it controls the safety valve 334 to exhaust. At the same time, when the water level in the barrel 3 is too high, it controls the drain valve 35 to drain water.

[0058] The water source mode waste heat recovery steam generator has the remarkable effects of improving comprehensive energy efficiency, reducing equipment operation costs, improving system reliability and intelligence, and wide applicability, through: (1) multi-stage heating to improve thermal energy utilization; the heat pump heat exchanger unit 4 absorbs the energy of the water in the cold water tank 1, transfers the heat to the water in the hot water tank 2, and heats the water in the hot water tank 2 for the first time, that is, the water entering the barrel 3 for the first time, and uses the high-efficiency heat pump heat exchanger unit 4 to upgrade low-grade thermal energy to high-grade thermal energy. Then, the electromagnetic heating tube 34 is used to heat the water entering the barrel 3 for the second time by electromagnetic heating, and the water is quickly converted into steam. This hierarchical heating method avoids the energy efficiency loss of heating with a single device and realizes more efficient thermal energy utilization; in addition, the energy efficiency of the heat pump heat exchanger unit 4 and the electromagnetic heating method of the electromagnetic heating tube 34 are much higher than the traditional fuel or resistance heating energy efficiency, further improving the energy efficiency of heating and reducing energy consumption.

[0059] Among them, heat recovery is achieved through the cooling circulating water channel. Since the electromagnetic heating tube 34 itself will generate heat as a conductor when heating the water in the barrel body 3, and the barrel wall of the barrel body 3 will also naturally dissipate heat and generate a certain amount of heat loss, the water of the cold water tank 1 is passed into the electromagnetic heating tube 34 of the hollow electromagnetic heating device to achieve heat exchange. The water in the cold water tank 1 recovers the heat generated by the barrel wall of the barrel body 3 and the electromagnetic heating tube 34, and at the same time realizes the necessary cooling of the electromagnetic heating tube 34, and stores the collected heat in the cold water tank 1. Subsequently, the heat is transported to the hot water tank 2 through the heat pump heat exchanger unit 4. Through this heat recovery and transfer process, heat waste is greatly reduced and the overall thermal efficiency of the entire system is improved.

[0060] (2) Reduce energy consumption; heat pump technology has efficient energy conversion performance and can significantly reduce electricity or fuel consumption compared to traditional heating methods. At the same time, heat recovery and recycling further reduce the demand for additional heating energy during the heating process. The system adopts an integrated design, which closely combines functional modules such as the cold water tank 1, the hot water tank 2, the heat pump heat exchange unit 4, and the electromagnetic heating tube 34 to form a machine, which not only improves the compactness of the system operation, but also reduces the installation and maintenance costs.

[0061] (3) Intelligent regulation of the controller 5; the controller 5 can monitor and adjust the operating status of the heat pump heat exchange unit 4 and the electromagnetic heating tube 34 in real time, realize precise heating control, ensure that the water heating process is efficient and stable, and avoid waste of electricity and heat energy or equipment loss caused by overheating or overcooling.

[0062] The cold water tank 1 and the hot water tank 2 have an automatic water replenishment function to ensure that the water volume of the waste heat recovery steam generator in the water source mode remains stable during continuous operation, so that the thermal cycle and steam production of the waste heat recovery steam generator in the water source mode are stable, the frequency of manual intervention is reduced, and the stability and operation efficiency of the equipment are improved.

[0063] (5) Multi-module collaborative design. Based on the traditional waste heat recovery and steam generator, the present invention innovatively introduces the combination of heat pump technology, electromagnetic heating and circulating water channels, realizes the optimization and integration of thermal energy utilization, and further improves the energy efficiency of the combination of heat pump technology and electromagnetic heating.

[0064] (6) Dual heating strategy, through the combined design of heat pump and electromagnetic heating, taking advantage of the characteristics of different equipment, combines the high-efficiency and low-power loss (low-cost, heat recovery), low-temperature heating heat pump heat exchanger 4 technology with the high-efficiency, high-temperature heating electromagnetic heating tube 34 technology, as well as the circulating water channel for energy recovery and cooling of the battery heating tube, and adopts a graded heating mode to greatly improve the efficiency of converting water into steam.

[0065] In summary, the water source mode waste heat recovery steam generator provided by the present invention not only effectively solves the problems of low comprehensive energy efficiency and high equipment cost of existing waste heat recovery and heating, but also achieves the goals of high efficiency energy saving, cost optimization and environmental friendliness (heat energy recovery), and has significant technical advantages and broad application prospects.

[0066] With the above technical solution, the following steps can be followed:

[0067] S1: The controller 5 controls the float device 61 of the cold water tank 1 to replenish water. When the water level in the cold water tank 1 reaches a certain level, the float device 61 automatically stops replenishing water.

[0068] S2: The controller 5 controls the float device 61 of the hot water tank 2 to replenish water. When the water level in the hot water tank 2 reaches a certain level, the float device 61 automatically stops replenishing water.

[0069] S3: The controller 5 controls the water supply pump 32 to extract water from the hot water tank 2 to supply water to the barrel 3, opens the water inlet valve 31, and the water temperature and water level meter measures the water level in the barrel and returns the water level data to the controller 5. When the water level in the barrel reaches the set position, the controller 5 controls the water supply pump 32 to stop;

[0070] S4: The controller 5 controls the electromagnetic heating tube 34 to start, and electromagnetically heats the water in the barrel in a manner of electromagnetic heating, and the electromagnetic heating tube 34 is at full power; at the same time, the circulation pump 133 is started;

[0071] S5: 5 minutes after the circulation pump 133 is started, the controller 5 measures the water temperature between 10-35°C through the thermometer 62 of the cold water tank 1, and the heat pump heat exchanger unit 4 reaches the thermal efficiency start condition, and the heat pump heat exchanger unit 4 starts;

[0072] S6: When the water in the hot water tank 2 is heated by the heat pump heat exchanger 4, the controller 5 measures the water temperature through the thermometer 62 of the hot water tank 2 to be above 50°C, and the heat pump heat exchanger 4 reduces the heat exchange power and operates at 50%-60% power;

[0073] S7: After the steam drum 33 is stably discharging steam, the controller 5 controls the heating power of the electromagnetic heating tube 34 to be reduced and operates at 60-70% of the power;

[0074] S8: When the water temperature of the cold water tank 1 is lower than 10 degrees, the controller 5 controls the thermostatic drain valve 11 to drain water; when the water temperature of the cold water tank 1 is higher than 35 degrees, the controller 5 controls the thermostatic drain valve 11 to drain water;

[0075] S9: When the controller 5 detects that the air pressure in the barrel body 3 increases and the water level in the barrel body 3 is too high, the controller 5 controls the drain valve 35 to drain water;

[0076] S10: The controller 5 detects that the water temperature in the barrel body 3 is too high, controls the electromagnetic heating tube 34 to stop heating, controls the circulating pump 133 to increase the water outlet pressure, and controls the heat pump heat exchanger unit 4 to operate at full power; after the water temperature in the barrel body 3 reaches the predetermined temperature, the electromagnetic heating tube 34 restores 30% of the heating power, controls the circulating pump 133 to restore the normal water outlet pressure, and the heat pump heat exchanger unit 4 operates at the predetermined power to cool the electromagnetic heating tube 34.

[0077] As one optional implementation,

[0078] Regarding the water inlet structure and the water inlet control structure of the cold water tank 1 and the hot water tank 2, this embodiment is as follows: Figure 1As shown, the water inlet side 12 of the cold water tank 1 is connected to an external water source, and a float device 61 is installed in the cold water tank 1, and the water replenishment action of the water inlet side 12 is controlled by the float device 61; the water inlet of the hot water tank 2 is connected to the cold water tank 1 or an external water source, and a float device 61 is installed in the hot water tank 2, and the water replenishment action of the water inlet is controlled by the float device 61.

[0079] Regarding the water inlet and outlet control structure of the cold water tank 1 and the hot water tank 2, this embodiment is as follows: Figure 1 As shown, the hot water tank 2 and the cold water tank 1 are both equipped with a thermometer 62, and the thermometer 62 is electrically connected to the controller 5; the hot water tank 2 is provided with a maintenance drain valve 21; the cold water tank 1 is provided with a temperature-adjusting drain valve 11; the controller 5 controls the temperature-adjusting drain valve 11 to drain water by obtaining the water temperature data of the cold water tank 1, so as to prevent the temperature of the electromagnetic heating tube 34 from being too high and the temperature of the heat pump heat exchange unit 4 from being too low.

[0080] When the water temperature in the cold water tank 1 is lower than 10 degrees, the controller 5 controls the thermostatic drain valve 11 to drain water; when the water temperature in the cold water tank 1 is higher than 35 degrees, the controller 5 controls the thermostatic drain valve 11 to drain water.

[0081] Regarding the specific assembly structure of the electromagnetic heating tube 34 and the barrel 3, this embodiment Figure 1 As shown, a high temperature resistant insulating layer is provided between the barrel body 3 and the wound electromagnetic heating tube 34; and the electromagnetic heating tube 34 is covered with a high temperature resistant insulating sleeve.

[0082] Regarding the water temperature and water level control structure of the barrel 3, this embodiment Figure 1 As shown, a water level and water temperature meter 63 is disposed outside the barrel body 3 , and the water level and water temperature meter 63 is electrically connected to the controller 5 to transmit the water temperature and water level information in the barrel body 3 to the controller 5 .

[0083] A drain valve 35 is installed outside the barrel body 3 , and the drain valve 35 is connected to the barrel body 3 through a drain pipe.

[0084] Regarding the specific heat recovery structure of the water outlet side 13 of the cold water tank 1, the water absorbing water fluorine heat exchanger 43, and the electromagnetic heating tube 34, this embodiment is as follows: Figure 1 As shown, the water outlet side 13 of the cold water tank 1 is provided with a first water outlet 131, and the first water outlet 131 is connected to the water inlet of the hot water fluorine heat exchanger 43 through a water pipe; the water outlet side 13 of the cold water tank 1 is also provided with a second water outlet 132, and the second water outlet 132 is installed with a circulating pump 133, and the circulating pump 133 is connected in parallel with the water outlet of the hot water fluorine heat exchanger 43 and the water inlet end 341 of the electromagnetic heating tube 34 through a water pipe.

[0085] Regarding the specific heat exchange structure of the compressor 41, the hot water fluorine heat exchanger 42, the hot water fluorine heat exchanger 43, the electromagnetic heating tube 34, the cold water tank 1 and the hot water tank 2, this embodiment is as follows: Figure 1 As shown, the water channel and the refrigerant channel are provided in the hot water fluorine heat exchanger 42 and the hot water fluorine heat exchanger 43; the refrigerant outlet of the compressor 41 is connected to the refrigerant channel inlet of the hot water fluorine heat exchanger 42, the refrigerant channel outlet of the hot water fluorine heat exchanger 42 is connected to the throttle valve 44, the throttle valve 44 is connected to the refrigerant channel inlet of the hot water fluorine heat exchanger 43, and the refrigerant channel outlet of the hot water fluorine heat exchanger 43 is connected to the refrigerant channel outlet of the compressor 41. Refrigerant inlet; the water inlet of the water channel of the hot water fluorine heat exchanger 42 is connected to the water outlet of the hot water tank 2 through a water pump, and the water outlet of the water channel of the hot water fluorine heat exchanger 42 is connected to the water inlet of the hot water tank 2; the water inlet of the water channel of the hot water fluorine heat exchanger 43 is connected to the first water outlet 131, and the water outlet of the water channel of the hot water fluorine heat exchanger 43 is connected in parallel with the water outlet of the circulating pump 133 and the water inlet end 341 of the electromagnetic heating tube 34.

[0086] The second embodiment of the water source mode waste heat recovery steam generator is as follows Figure 2 As shown, the difference between this embodiment and the first embodiment is that a water cooling unit 7 is installed in the controller 5, and the water cooling unit 7 is provided with a water inlet heat absorption channel 71 and a water outlet heat release channel 72; the water inlet heat absorption channel 71 is connected in parallel with the water outlet of the water channel of the water absorption water fluorine heat exchanger 43, the water outlet of the circulation pump 133, and the water pipe connected to the water inlet end 341 of the electromagnetic heating tube 34; the water outlet heat release channel 72 is connected in parallel with the water outlet end 342 of the electromagnetic heating tube 34 and the water pipe connected to the water inlet side 12 of the cold water tank 1.

[0087] When in use, the controller 5 is provided with a plurality of drive modules 51, and the water cooling unit 7 is provided with a plurality of heat recovery modules 73. Each drive module 51 is provided with a heat recovery module 73. The water inlets of the plurality of heat recovery modules 73 are connected in parallel to the water inlet heat absorption channel 71, and the water outlets of the plurality of heat recovery modules 73 are connected in parallel to the water outlet heat release channel 72.

[0088] When in use, the controller 5 will also generate a lot of heat when controlling the operation of the entire device, and it also needs to be cooled and dissipated. A water cooling unit 7 is installed in the controller 5, and its water inlet heat absorption channel 71 and water outlet heat release channel 72 are connected in parallel to the cooling circulation water channel composed of the heat pump heat exchanger unit 4, the cold water tank 1 and the electromagnetic heating tube 34, so that the heat pump heat exchanger unit 4 can also recover the heat of the controller, realizing the water cooling function of the controller 5, and at the same time collecting more heat, further improving the energy efficiency of the waste heat recovery steam generator in the water source mode.

[0089] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described.

Claims

1. A water source mode waste heat recovery steam generator, characterized in that: It includes a cold water tank and a hot water tank, wherein the cold water tank is connected to an external water source and automatically replenishes water, and the hot water tank is connected to the cold water tank or an external water source and automatically replenishes water; and a barrel body, wherein the water inlet of the barrel body is connected with the water supply inlet of the hot water tank through a water inlet valve and a water supply pump; the top of the barrel body is connected with a steam drum; and a heat pump heat exchange unit, the heat pump heat exchange unit comprising a compressor, a hot water fluorine heat exchanger for discharging water, and a hot water fluorine heat exchanger for absorbing water, the evaporation side of the compressor is connected to the hot water fluorine heat exchanger for absorbing water, the hot water fluorine heat exchanger for absorbing water is connected to the hot water fluorine heat exchanger for discharging water through a throttle valve, and the heat exchange side of the compressor is connected to the hot water fluorine heat exchanger for discharging water; An electromagnetic heating tube is wound around the barrel body; The water outlet side of the cold water tank is communicated with the water inlet of the hot water fluorine heat exchanger, the water outlet of the hot water fluorine heat exchanger is communicated with the water inlet end of the electromagnetic heating tube, and the water outlet end of the electromagnetic heating tube is communicated with the water inlet side of the cold water tank; The water inlet and the water outlet of the hot water fluorine heat exchanger are both connected to the hot water tank; and a controller, the controller being electrically connected to the heat pump heat exchange unit and the electromagnetic heating tube, respectively, for controlling the heat pump heat exchange unit to heat the water in the hot water tank, and controlling the energization of the electromagnetic heating tube to heat the water in the barrel into water vapor in an electromagnetic heating manner; The electromagnetic heating tube, the cold water tank and the water-absorbing fluorine heat exchanger form a cooling circulation water channel, which recovers the heat generated when the electromagnetic heating tube is powered on and stores it in the cold water tank; the heat of the water in the cold water tank is transferred to the water-discharging fluorine heat exchanger through the heat pump heat exchanger unit and the water-absorbing fluorine heat exchanger, and the heat is transferred to the hot water tank through the water-discharging fluorine heat exchanger; the heat pump heat exchanger unit is used to heat the water entering the barrel body for the first time; The electromagnetic heating tube is used for heating the water entering the barrel body for the second time.

2. The water source mode waste heat recovery steam generator according to claim 1, characterized in that: The water inlet side of the cold water tank is connected to an external water source, and a float device is installed in the cold water tank, and the water replenishment action on the water inlet side is controlled by the float device; The water inlet of the hot water tank is connected to the cold water tank or an external water source. A float device is installed in the hot water tank, and the water replenishment action of the water inlet is controlled by the float device.

3. The water source mode waste heat recovery steam generator according to claim 2, characterized in that: The hot water tank and the cold water tank are both equipped with a thermometer, and the thermometer is electrically connected to the controller; the hot water tank is provided with a maintenance drain valve; the cold water tank is provided with a temperature-adjusting drain valve; The controller controls the water discharge of the thermostatic drain valve by obtaining the water temperature data of the cold water tank, so as to prevent the temperature of the electromagnetic heating tube from being too high and the temperature of the heat pump heat exchange unit from being too low.

4. The water source mode waste heat recovery steam generator according to claim 1, characterized in that: A high temperature resistant insulating layer is arranged between the barrel body and the wound electromagnetic heating tube; and a high temperature resistant insulating sleeve is arranged on the outer sleeve of the electromagnetic heating tube.

5. The water source mode waste heat recovery steam generator according to claim 1, characterized in that: A water level and water temperature meter is arranged outside the barrel body, and the water level and water temperature meter is electrically connected to the controller to transmit the water temperature and water level information inside the barrel body to the controller.

6. The water source mode waste heat recovery steam generator according to claim 5, characterized in that: A drain valve is installed outside the barrel body, and the drain valve is connected with the barrel body through a drain pipe.

7. The water source mode waste heat recovery steam generator according to claim 6, characterized in that: The steam drum is provided with a steam inlet and a steam outlet, and the steam inlet is connected to the top of the barrel; A pressure gauge and a safety valve are also installed on the steam drum.

8. The water source mode waste heat recovery steam generator according to claim 1, characterized in that: The water outlet side of the cold water tank is provided with a first water outlet, and the first water outlet is connected to the water inlet of the hot water fluorine heat exchanger through a water pipe; The water outlet side of the cold water tank is also provided with a second water outlet, and the second water outlet is installed with a circulation pump, and the circulation pump is connected in parallel with the water outlet of the water-absorbing water-fluorine heat exchanger and the water inlet end of the electromagnetic heating tube through a water pipe.

9. The water source mode waste heat recovery steam generator according to claim 2, characterized in that: The hot water fluorine heat exchanger and the hot water fluorine heat exchanger are both provided with a water channel and a refrigerant channel; The refrigerant outlet of the compressor is connected to the refrigerant channel inlet of the hot water fluorine heat exchanger, the refrigerant channel outlet of the hot water fluorine heat exchanger is connected to the throttle valve, the throttle valve is connected to the refrigerant channel inlet of the hot water fluorine heat exchanger, and the refrigerant channel outlet of the hot water fluorine heat exchanger is connected to the refrigerant inlet of the compressor; The water inlet of the water channel of the hot water fluorine heat exchanger is connected to the water outlet of the hot water tank through a water pump, and the water outlet of the water channel of the hot water fluorine heat exchanger is connected to the water inlet of the hot water tank; The water inlet of the water channel of the hot water fluorine heat exchanger is connected to the first water outlet, and the water outlet of the water channel of the hot water fluorine heat exchanger is connected in parallel with the water outlet of the circulation pump and the water inlet end of the electromagnetic heating tube.

10. The water source mode waste heat recovery steam generator according to claim 9, characterized in that: A water cooling unit is installed in the controller, and the water cooling unit is provided with a water inlet heat absorption channel and a water outlet heat release channel; The water inlet heat absorption channel is connected in parallel with the water outlet of the water channel of the water absorption water fluorine heat exchanger, the water outlet of the circulation pump, and the water pipe connected to the water inlet end of the electromagnetic heating tube; The water outlet heat release channel is connected in parallel with a water pipe communicating with the water outlet end of the electromagnetic heating tube and the water inlet side of the cold water tank.

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