Air compressor heat storage and shutdown prevention waste heat recovery system

Abstract

The air compressor heat storage and shutdown prevention waste heat recovery system is a technical method to solve the problem of discontinuous operation of the air compressor, which leads to the difficulty of waste heat recovery. It includes waste heat recovery of multiple air compressors used together, and auxiliary dehumidification of compressed air to achieve waste heat recovery of air-cooled, liquid-cooled air compressors and compressed gas tanks. The recovered waste heat is used to prepare hot water for production and life, and winter heating water, reducing the possibility of air compressor shutdown, and ensuring the normal operation of the heat pump unit when the air compressor stops running. The system consists of an air-cooled air compressor room, a liquid-cooled air compressor unit, a cooling tower, a compressed air tank, a water source heat pump, a heat storage water exchange tank group, a valve group, a water collection and distribution node, a process controller, and a heat exchanger. Each air compressor needs to set the working pressure independently. The water source heat pump and the air source heat pump prepare high temperature, which is collected through the water collection and distribution. The high-pressure air taken by the air compressor is collected into the compressed air tank through the air collecting pipe for production.

Description

Technical Field

[0001] The invention belongs to the field of waste heat recovery and relates to waste heat regulation and recovery of air compressors and compressed gas tanks for air cooling and liquid cooling. Background Art

[0002] Air compressor is a common equipment in industrial production, with a wide range of uses. It is often used as a power source, such as: pneumatic tools, object delivery, door and window opening and closing, material mixing, painting, etc. The air compressor is electrically driven during operation, and a large amount of heat is generated during the operation of the air compressor. The equipment needs to be cooled by fans, liquid circulation, etc. to ensure the normal operation of the equipment. The emission of these heat is a serious waste of energy. In order to ensure production safety, large industrial enterprises will use air compressors with various forms of heat dissipation. At the same time, they also need to filter and dehumidify the compressed air for production. Limited by the production process requirements, the operation of the air compressor is also intermittent and discontinuous. When the pressure of the pressure tank reaches the pressure value, the equipment will shut down. Such intermittent waste heat cannot be used for heating. Summary of the invention

[0003] The present invention aims at recovering waste heat from discontinuous operation of air compressors and combined use of multiple air compressors, and at the same time performs auxiliary dehumidification on compressed air to achieve waste heat recovery from air-cooled and liquid-cooled air compressors and compressed gas tanks. The recovered waste heat is used to prepare hot water for production and life, and heating water in winter, thereby reducing the possibility of air compressor shutdown and ensuring that the heat pump unit maintains normal operation when the air compressor stops operating.

[0004] The present invention is implemented as follows: the system mainly consists of an air-cooled air compressor room (the room includes: an air-cooled air compressor unit, an air source heat pump, and a ventilation duct), a liquid-cooled air compressor unit, a cooling tower, a compressed air tank (the compressed air tank includes: a tank cavity, a cooling pipe, an antifreeze liquid cavity, a drain valve, a water collecting box, an air pipe, and an antifreeze liquid pressure gauge), a water source heat pump, a heat storage and heat exchange water tank group (the heat storage and heat exchange water tank group is composed of multiple groups of water tanks with heat exchange coils inside, and the inlet and outlet water on both sides of each water tank are provided with valves, and a remote water intake guide plate), a valve group, a water collecting and distributing node, a process controller, and a heat exchanger (used for oil cooling or non-aqueous liquid isolation heat exchange); each air-cooled air compressor and each liquid-cooled air compressor needs to set an independent working pressure, and the high temperature prepared by the water source heat pump and the air source heat pump is collected through the water collecting and distributing node, and the high-pressure air taken by the air-cooled air compressor and the liquid-cooled air compressor is collected into the compressed air tank through the gas pipeline.

[0005] There are at least two heat storage and heat exchange water tank groups, each group independently stores heat and exchanges heat. The supply and return water at both ends of the water tank are equipped with valve groups. The liquid-cooled air compressor stores heat for the water in the water tank one by one. When a water tank stores heat to 40℃, the valve group on the liquid-cooled air compressor side of the water tank is closed, and the second water tank valve group is opened to continue storing heat to avoid excessive water temperature in the water tank affecting the waste heat recovery of the air compressor. The heat storage and heat exchange water tank can avoid the air compressor stopping when the compressed air tank is full of pressure, causing the heat pump unit to stop working.

[0006] The heat storage and heat exchange water tank group and the water source heat pump unit absorb the heat in the water tanks one by one. When the temperature of the first water tank drops to 5°C, the valve group on the water source heat pump side of the water tank is closed, and the second water tank is opened to extract heat to avoid the water temperature in the water tank being too low, which affects the heating energy efficiency of the heat pump unit.

[0007] In the air-cooled air compressor room, most of the ventilation ducts are closed in winter to preserve heat, and the air source heat pump is used to recover the heat released by the air-cooled air compressor. When the indoor temperature exceeds 40℃ in winter, the ventilation ducts are opened appropriately to quickly cool down. When the indoor temperature is below 35℃, most of the ventilation ducts are closed to maintain the indoor temperature. In summer, all ventilation ducts are opened to cool down by natural temperature.

[0008] The compressed air tank is a double-layer tank with an antifreeze chamber as the outer layer. A cooling pipe is installed inside the antifreeze chamber and antifreeze is injected at the same time. A pressure gauge is also provided to observe the antifreeze pressure. The water source heat pump absorbs the air temperature in the compressed air tank and reduces its temperature to 7°C, making it close to the condensation point. While recycling the compressed air, the operating load of the heat pump is reduced. The condensation point of compressed air is 2°C-5°C, and the temperature is absorbed to 7°C, reducing the operating load of the compressed air dehumidifier. When the temperature in the gas tank is lower than 7°C, the valve group of the compressed air tank is cut off to avoid a decrease in the operating efficiency of the water source heat pump.

[0009] Every two air-cooled air compressors and liquid-cooled air compressors form a group, and the working pressures of the first group of air-cooled air compressors and liquid-cooled air compressors are set at 0.5MPa-0.6MPa, the second group of air-cooled air compressors and liquid-cooled air compressors are set at 0.6MPa-0.7MPa, and the third group of air-cooled air compressors and liquid-cooled air compressors are set at 0.7MPa-0.9MPa. The air compressors can work step by step and operate continuously according to the pressure in the compressed air tank, avoiding shutdown due to full air in the compressed air tank, and ensuring stable operation of the waste heat recovery equipment.

[0010] When the process controller monitors that a high-gas-consuming process is about to be carried out, it will send a signal to the air-cooled air compressor and the liquid-cooled air compressor in advance to release the pressure limit and operate at full load. Before the high-gas-consuming process is completed, the pressure limit of the air-cooled air compressor and the liquid-cooled air compressor is restored in advance to prevent the air compressor from running at full load and filling up the compressed air tank, causing the air compressor to shut down.

[0011] The antifreeze in the antifreeze chamber of the compressed air tank is at normal pressure, so the water pressure is lower than the pressure of the compressed air in the compressed air tank to avoid leakage. When the tank body ruptures, the compressed air will ensure that the antifreeze will not flow into the tank chamber.

[0012] The heat source of the water source heat pump is the cooling circulating fluid of the heat storage and heat exchange water tank group and the compressed air tank heated by the liquid-cooled air compressor. The waste heat is recovered as source water supply after being collected through the water collection node. The cooled source return water is sent back to the compressed air tank and the heat storage and heat exchange water tank group respectively through the water distribution node. The high-temperature supply water and the hot water prepared by the air source heat pump are collected through the water collection node for heating. The return water after heating returns to the air source heat pump and the water source heat pump respectively through the water distribution node to be heated again to complete the cycle.

[0013] When a high gas consumption process begins, the water source heat pump recovery temperature is increased at the same time. When the waste heat is too large, the operating power of the air source heat pump is reduced and the ventilation duct is opened to naturally dissipate heat for the air-cooled air compressor.

[0014] The beneficial effects of the present invention are:

[0015] 1. By adjusting the working pressure of air-cooled air compressors and liquid-cooled air compressors under different conditions, the possibility of air compressor shutdown can be reduced.

[0016] 2. By monitoring the production process, we can effectively avoid the situation of insufficient air pressure and air volume. At the same time, when the high-gas-consuming process stops, we can restore the air compressor pressure control in advance and extend the air compressor operation time as a second means to prevent the air compressor from stopping.

[0017] 3. To prevent the air compressor from shutting down, multiple sets of hot water storage tanks are set up to ensure stable operation of the system when the air compressor is shut down. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is an example of the structure of the present invention Figure 1 .

[0019] Figure 2 This is an example of the structure of the present invention Figure 2 .

[0020] As shown in: 1. Air-cooled air compressor room (1-1. Exterior wall of the room, 1-2. Ventilation duct, 1-3. Air-cooled air compressor 1, 1-4. Air-cooled air compressor 2, 1-5. Air-cooled air compressor 3, 1-6. Air source heat pump), 2. Liquid-cooled air compressor unit (2-1. Liquid-cooled air compressor 1, 2-2. Liquid-cooled air compressor 2, 2-3. Liquid-cooled air compressor 3), 3. Cooling tower, 4. Compressed air tank (4-1. Tank cavity, 4-2. Cooling pipe, 4-3. Antifreeze cavity, 4-4. Drain valve 1, 4-5. Water collection box, 4-6. Drain valve 2, 4-7. Air pipe, 4-8. Antifreeze pressure gauge), 5. Water source heat pump, 6. Heat storage water exchange tank unit (6-1. Water tank valve group 1, 6-2. Water tank valve group 2, 6-3 Water tank valve group 3, 6-4 Water tank valve group 4, 6-5. Water storage chamber, 6-6. Heat exchange coil, 6-7. Remote water intake guide plate) 7. Pump 1, 8. Pump 2, 9. Valve group 1, 10. Valve group 2, 11. Valve group 3, 12. Gas collecting pipe, 13. Water collecting node 1, 14. Water distribution node 1, 15. Water collecting node 2, 16. Water distribution node 2, 17. Process controller, 18. Source return water, 19. Source water supply, 20. Hot water supply 1, 21. Hot water return water 1, 22. Hot water supply 2, 23. Hot water return water 2, 24. Pump 3, 25. Heat exchanger, 26. Pump 4. DETAILED DESCRIPTION

[0021] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] Embodiment 1.

[0023] like Figure 1 As shown:

[0024] A ventilation duct (1-2) is arranged on the outer wall (1-1) of the air-cooled compressor room (1) for adjusting the room temperature and air intake. Air-cooled compressor 1 (1-3) with a working pressure of 0.5MPa-0.6MPa, air-cooled compressor 2 (1-4) with a working pressure of 0.6MPa-0.7MPa, and air-cooled compressor 3 (1-5) with a working pressure of 0.7MPa-0.9MPa are arranged inside. An air source heat pump (1-6) is used for indirectly recovering waste heat from the air-cooled compressor unit.

[0025] The liquid-cooled air compressor unit (2) comprises a liquid-cooled air compressor (2-1) with a working pressure of 0.5MPa-0.6MPa, a liquid-cooled air compressor 2 (2-2) with a working pressure of 0.6MPa-0.7MPa, and a liquid-cooled air compressor 3 (2-3) with a working pressure of 0.7MPa-0.9MPa. The cooling tower (3) is used to dissipate heat for the liquid-cooled air compressor unit (2) in summer.

[0026] The heat storage water exchange water tank group (6) is used to recover the waste heat of the liquid-cooled air compressor group (2). The waste heat is injected into the heat exchange coil (6-6), and the water in the water storage chamber (6-5) is heated through the coil. After the water in the water storage chamber (6-5) is heated, it is transported to the water source heat pump (5) through the flow channel formed by the remote water intake guide plate (6-7) through the pump 1 (7). When the waste heat temperature of the liquid-cooled air compressor is too high, the water tank is switched to store heat by switching the water tank valve group 1 (6-1) and the water tank valve group 2 (6-2).

[0027] The heat source of the water source heat pump (5) is the cooling circulating fluid of the heat storage and heat exchange water tank group (6) and the compressed air tank (4), which is circulated by a pump (7), collected by a water collection node 1 (13), and the residual heat is recovered as the source supply water (19). The source return water (18) after cooling is sent back to the compressed air tank (4) and the heat storage and heat exchange water tank group (6) through a water distribution node 1 (14). The hot water supply water 1 (20) prepared by the water source heat pump (5) and the hot water supply water 2 (22) prepared by the air source heat pump (1-6) are circulated by a pump 2 (8), collected by a water collection node 2 (15), and used for heating. The return water after heating is respectively returned to the air source heat pump (1-6) and the water source heat pump (5) through a water distribution node 2 (16). The hot water return water 2 (23) and the hot water return water 1 (21) are heated again to complete the cycle.

[0028] When the temperature of the first water tank of the heat storage and heat exchange water tank group (6) is too low, the water tank is switched by switching the water tank valve group 3 (6-3) and the water tank valve group 4 (6-4), thereby utilizing the water storage chamber (6-5) with a higher temperature.

[0029] The compressed air tank (4) is used to store compressed air produced by the air-cooled air compressor unit and the liquid-cooled air compressor unit (2), and the compressed air is collected through an air collecting pipe (12). The outer shell of the compressed air tank (4) is double-layered to form an antifreeze liquid cavity (4-3), into which antifreeze liquid is injected. A cooling pipe (4-2) is arranged inside the antifreeze liquid cavity (4-3), and an antifreeze liquid pressure gauge (4-8) is provided for the antifreeze liquid cavity (4-3). A drain valve 1 (4-4), a water collecting box (4-5), and a drain valve 2 (4-6) are provided at the bottom of the tank cavity (4-1). When draining water, the drain valve 1 (4-4) is first opened to allow the water in the tank cavity (4-1) to flow into the water collecting box (4-5). After the water collecting box (4-5) has collected all the water in the tank, the drain valve 1 (4-4) is closed, and the drain valve 2 (4-6) is opened to discharge the water in the compressed air tank (4).

[0030] Valve group 1 (9) is used to control the flow of the air source heat pump (1-6). When the water source heat pump (5) recovers sufficient waste heat, the air source heat pump (1-6) is reduced. Valve group 2 (10) is used to close the cooling tower (3) in winter to allow the coolant to circulate to the water source heat pump (5). Valve group 3 (11) is used to adjust the waste heat recovery temperature of the compressed air tank (4).

[0031] Embodiment 2.

[0032] like Figure 2 As shown:

[0033] A ventilation duct (1-2) is arranged on the outer wall (1-1) of the air-cooled compressor room (1) for adjusting the room temperature and air intake. Air-cooled compressor 1 (1-3) with a working pressure of 0.5MPa-0.6MPa, air-cooled compressor 2 (1-4) with a working pressure of 0.6MPa-0.7MPa, and air-cooled compressor 3 (1-5) with a working pressure of 0.7MPa-0.9MPa are arranged inside. An air source heat pump (1-6) is used for indirectly recovering waste heat from the air-cooled compressor unit.

[0034] The liquid-cooled air compressor unit (2) comprises a liquid-cooled air compressor (2-1) with a working pressure of 0.5MPa-0.6MPa, a liquid-cooled air compressor 2 (2-2) with a working pressure of 0.6MPa-0.7MPa, and a liquid-cooled air compressor 3 (2-3) with a working pressure of 0.7MPa-0.9MPa. The cooling tower (3) is used to dissipate heat for the liquid-cooled air compressor unit (2) in summer.

[0035] The compressed air tank (4) is used to store compressed air produced by the air-cooled air compressor unit and the liquid-cooled air compressor unit (2), and the compressed air is collected through an air collecting pipe (12). The outer shell of the compressed air tank (4) is double-layered to form an antifreeze liquid cavity (4-3), into which antifreeze liquid is injected. A cooling pipe (4-2) is arranged inside the antifreeze liquid cavity (4-3), and an antifreeze liquid pressure gauge (4-8) is provided for the antifreeze liquid cavity (4-3). A drain valve 1 (4-4), a water collecting box (4-5), and a drain valve 2 (4-6) are provided at the bottom of the tank cavity (4-1). When draining water, the drain valve 1 (4-4) is first opened to allow the water in the tank cavity (4-1) to flow into the water collecting box (4-5). After the water collecting box (4-5) has collected all the water in the tank, the drain valve 1 (4-4) is closed, and the drain valve 2 (4-6) is opened to discharge the water in the compressed air tank (4).

[0036] The heat exchanger (25) is used to isolate the oil or other cooling medium of the liquid-cooled air compressor unit (2), and the medium is circulated by a pump (7). The liquid cooling at the other end of the heat exchanger is circulated by a pump 4 (26), and the heat is stored in the heat storage water exchange tank unit (6).

[0037] The heat storage water exchange water tank group (6) is used to recover the waste heat exchanged by the heat exchanger (25) from the liquid-cooled air compressor group (2). The waste heat is injected into the heat exchange coil (6-6), and the water in the water storage chamber (6-5) is heated through the coil. After the water in the water storage chamber (6-5) is heated, it is transported to the water source heat pump (5) through the flow channel formed by the remote water intake guide plate (6-7) through the pump 1 (7). When the waste heat temperature of the liquid-cooled air compressor is too high, the water tank is switched to store heat by switching the water tank valve group 1 (6-1) and the water tank valve group 2 (6-2).

[0038] The heat source of the water source heat pump (5) is the cooling circulating fluid of the heat storage and heat exchange water tank group (6) and the compressed air tank (4), which is circulated by a pump (7), collected by a water collection node 1 (13), and the residual heat is recovered as the source supply water (19). The source return water (18) after cooling is sent back to the compressed air tank (4) and the heat storage and heat exchange water tank group (6) through a water distribution node 1 (14). The hot water supply water 1 (20) prepared by the water source heat pump (5) and the hot water supply water 2 (22) prepared by the air source heat pump (1-6) are circulated by a pump 2 (8), collected by a water collection node 2 (15), and used for heating. The return water after heating is respectively returned to the air source heat pump (1-6) and the water source heat pump (5) through a water distribution node 2 (16). The hot water return water 2 (23) and the hot water return water 1 (21) are heated again to complete the cycle.

[0039] When the temperature of the first water tank of the heat storage and heat exchange water tank group (6) is too low, the water tank is switched by switching the water tank valve group 3 (6-3) and the water tank valve group 4 (6-4), thereby utilizing the water storage chamber (6-5) with a higher temperature.

[0040] Valve group 1 (9) is used to control the flow of the air source heat pump (1-6). When the water source heat pump (5) recovers sufficient waste heat, the air source heat pump (1-6) is reduced. Valve group 2 (10) is used to close the cooling tower (3) in winter to allow the coolant to circulate to the water source heat pump (5). Valve group 3 (11) is used to adjust the waste heat recovery temperature of the compressed air tank (4).

[0041] The present invention is not limited to this embodiment, and any equivalent concepts or changes within the technical scope disclosed by the present invention are included in the protection scope of the present invention.

Claims

1. The air compressor heat storage and shutdown prevention waste heat recovery system is characterized by: The invention comprises an air-cooled compressor room (1), a liquid-cooled compressor unit (2), a cooling tower (3), a compressed air tank (4), a water source heat pump (5), a heat storage and heat exchange water tank group (6), a valve group, a water collecting and distributing node, a process controller (17), and a heat exchanger (25); the air-cooled compressor room (1) and the liquid-cooled compressor unit (2) are connected in parallel and are connected to the compressed air tank (4); the liquid-cooled compressor unit (2) is connected to the heat exchanger (25) or the cooling tower (3) through the valve group 2 (10); the heat exchanger (25) is connected to the Heat storage and heat exchange water tank group (6); the compressed air tank (4) is connected to the process controller (17); the compressed air tank (4) is connected to the water source heat pump (5) through the valve group 3 (11) and the heat storage and heat exchange water tank group (6); each air-cooled air compressor and liquid-cooled air compressor need to set the working pressure independently; the high temperature generated by the water source heat pump (5) and the air source heat pump (1-6) is collected through the water collecting and distributing node; the high pressure air taken by the air-cooled air compressor and the liquid-cooled air compressor is collected into the compressed air tank (4) through the air collecting pipe (12); The air-cooled compressor room includes: a plurality of ventilation ducts (1-2) are arranged on the outer wall (1-1) of the room; the equipment in the room includes an air-cooled compressor 1 (1-3), an air-cooled compressor 2 (1-4), an air-cooled compressor 3 (1-5), and an air source heat pump (1-6); the technology requires the use of more than three air-cooled compressor units and more than three liquid-cooled compressor units for coupled waste heat regulation and utilization; The compressed air tank (4) at least comprises: a tank cavity (4-1) wherein a cooling pipe (4-2) is coiled in an antifreeze liquid cavity (4-3); an antifreeze liquid pressure gauge (4-8) is arranged at the top of the antifreeze liquid cavity (4-3); a drain valve 1 (4-4) is arranged at the bottom of the compressed air tank (4); the bottom of the drain valve 1 (4-4) is connected to a water collecting box (4-5); a drain valve 2 (4-6) is arranged at the bottom of the water collecting box; and an air delivery pipe (4-7) is arranged at the top of the compressed air tank (4); The antifreeze pressure gauge (4-8) is used to observe the antifreeze pressure. The water source heat pump (5) absorbs the air temperature in the compressed air tank (4) to reduce its temperature to 7°C, making it close to the condensation point. The compressed air is recovered and the operating load of the water source heat pump (5) is reduced. The condensation point of compressed air is 2°C-5°C. The temperature is absorbed to 7°C, which reduces the operating load of the compressed air dehumidifier. When the temperature in the air tank is lower than 7°C, the valve group 3 (11) of the compressed air tank (4) is cut off to avoid a reduction in the operating efficiency of the water source heat pump (5); The heat storage and heat exchange water tank group (6) is composed of a plurality of water tank groups. A heat exchange coil (6-6) is arranged in the water storage chamber (6-5) in the water tank. Water taken by the water source heat pump (5) is taken through a remote water intake guide plate (6-7), thereby ensuring that the water taken by the water storage chamber (6-5) in the water tank is fully heat exchanged, thereby preventing low-temperature water from directly entering the water source heat pump (5).

2. According to claim 1, the air compressor heat storage and shutdown prevention waste heat recovery system is characterized by: There need to be more than two heat storage and heat exchange water tank groups (6), each group stores heat independently, and water tank valve groups are provided at both ends of the heat storage and heat exchange water tanks. The liquid-cooled air compressors store heat for the water in the water tanks one by one. When a water tank stores heat to 40°C, the water tank valve group 1 (6-1) on the liquid-cooled air compressor side of the water tank is closed, and the second water tank valve group 2 (6-2) is opened to continue storing heat, so as to avoid the water temperature in the water tank being too high to affect the waste heat recovery of the liquid-cooled air compressor. The heat storage and heat exchange water tanks are used to avoid the air compressor stopping when the compressed air tank (4) is full of pressure, causing the heat pump unit to stop working; The water source heat pump (5) absorbs the heat in the heat storage and heat exchange water tank group (6) one by one. When the temperature of the first water tank drops to 5°C, the water tank valve group 3 (6-3) on the water source heat pump (5) side of the water tank is closed, and the second water tank valve group 4 (6-4) is opened to extract heat to avoid the water temperature in the water tank being too low, which affects the heating energy efficiency ratio of the heat pump unit.

3. The air compressor heat storage and shutdown prevention waste heat recovery system according to claim 1 is characterized by: Two air-cooled air compressors and two liquid-cooled air compressors form a group, and the working pressures of the first group of air-cooled air compressors and liquid-cooled air compressors are set to 0.5MPa-0.6MPa, the second group of air-cooled air compressors and liquid-cooled air compressors are set to 0.6MPa-0.7MPa, and the third group of air-cooled air compressors and liquid-cooled air compressors are set to 0.7MPa-0.9MPa, so that the air compressors can work step by step according to the pressure in the compressed air tank (4) and operate continuously, avoiding shutdown due to full air in the compressed air tank (4), and ensuring stable operation of the waste heat recovery equipment; When monitoring that a high-gas-consuming process is about to be carried out, the process controller (17) sends a signal to the air-cooled air compressor and the liquid-cooled air compressor in advance to release the pressure limit and carry out full-load operation. Before the high-gas-consuming process ends, the pressure limit of the air-cooled air compressor and the liquid-cooled air compressor is restored in advance to avoid the air compressor running at full load and filling up the compressed air tank (4), causing the air compressor to shut down, and the water source heat pump (5) to have no heat available, affecting the preparation of hot water.

4. The air compressor heat storage and shutdown prevention waste heat recovery system according to claim 1 is characterized in that: When a high gas consumption process starts, the recovery temperature of the water source heat pump (5) is increased at the same time. When the residual heat is too large, the operating power of the air source heat pump (1-6) is reduced and the ventilation duct (1-2) is opened to naturally dissipate heat for the air-cooled air compressor.

5. The air compressor heat storage and shutdown prevention waste heat recovery system according to claim 1 is characterized in that: The heat source of the water source heat pump (5) is the heat storage water exchange tank group (6) that exchanges heat with the cooling circulating fluid of the compressed air tank. The waste heat is collected through the water collection node 1 (13) and recovered as source water supply. The source return water after cooling is sent back to the compressed air tank (4) and the heat storage water exchange tank group (6) through the water distribution node 1 (14). The high-temperature supply water and the hot water prepared by the air source heat pump (1-6) are collected through the water collection node 2 (15) for heating. The return water after heating is returned to the air source heat pump (1-6) and the water source heat pump (5) through the water distribution node 2 (16) to be heated again, completing the cycle.

6. The air compressor heat storage and shutdown prevention waste heat recovery system according to claim 1 is characterized by: The antifreeze in the antifreeze chamber (4-3) of the compressed air tank (4) is at normal pressure, so the water pressure is lower than the pressure of the compressed air in the compressed air tank (4), thereby avoiding leakage problems. When the tank body is ruptured, the compressed air will ensure that the antifreeze does not flow into the tank chamber (4-1).

7. The air compressor heat storage and shutdown prevention waste heat recovery system according to claim 1 is characterized by: In winter, most ventilation ducts are closed to preserve heat, and the air source heat pump (1-6) is used to recover the heat released by the air-cooling compressor. When the indoor temperature in winter exceeds 40°C, the ventilation ducts (1-2) are opened appropriately to quickly cool down. When the indoor temperature is below 35°C, most ventilation ducts are closed to maintain the indoor temperature. In summer, all ventilation ducts (1-2) are opened to cool down by natural temperature.

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