CN110886689A - Heat storage and shutdown prevention waste heat recovery system of air compressor - Google Patents
Heat storage and shutdown prevention waste heat recovery system of air compressor Download PDFInfo
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- CN110886689A CN110886689A CN201911309055.XA CN201911309055A CN110886689A CN 110886689 A CN110886689 A CN 110886689A CN 201911309055 A CN201911309055 A CN 201911309055A CN 110886689 A CN110886689 A CN 110886689A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
- F04B39/066—Cooling by ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B41/00—Pumping installations or systems specially adapted for elastic fluids
- F04B41/06—Combinations of two or more pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/06—Heat pumps characterised by the source of low potential heat
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- General Engineering & Computer Science (AREA)
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Abstract
The technical method comprises the steps of recovering waste heat by jointly using multiple air compressors, simultaneously carrying out auxiliary dehumidification on compressed air, achieving the purpose of recovering the waste heat of the air-cooled air compressor, the liquid-cooled air compressor and the compressed air tank, using the recovered waste heat for preparing hot water for production and life and heating water in winter, reducing the possibility of stopping the operation of the air compressors, and ensuring that the normal operation of a heat pump unit is maintained when the air compressors stop operating.
Description
Technical Field
The invention belongs to the field of waste heat recovery, and relates to waste heat regulation and recovery of an air cooling and liquid cooling air compressor and a compressed air tank.
Background
The air compressor is a common device in industrial production, has wide application, and is commonly used as a power source such as: pneumatic tool, article conveying, door and window are opened and close, material stirring, spray paint etc. and the air compressor machine passes through the electric drive during operation, can produce a large amount of heats at the air compressor machine operation in-process, need cool off equipment through modes such as fan, liquid circulation, guarantee the normal operating of equipment, and the emission of these heats is the serious waste to the energy. In order to ensure production safety, large industrial enterprises can use air compressors with various heat dissipation forms, and meanwhile, compressed air for production needs to be filtered and dehumidified at low temperature, so that the production process requirements are met, the operation of the air compressors is discontinuous and does not operate continuously, when the pressure of a pressure tank reaches a pressure value, equipment is shut down, and discontinuous waste heat cannot be applied and used for supplying heat.
Disclosure of Invention
The invention aims at the discontinuous operation of the air compressors and the waste heat recovery of the combined use of a plurality of air compressors, and simultaneously carries out auxiliary dehumidification on the compressed air to achieve the waste heat recovery of the air-cooled and liquid-cooled air compressors and the compressed air tank, the recovered waste heat is used for preparing hot water for production and life and heating water in winter, the possibility of the stop operation of the air compressors is reduced, and the normal work of the heat pump unit is ensured to be maintained when the air compressors stop operating.
The system is realized by an air-cooled air compressor machine room (the machine room contains 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 contains a tank cavity, a cooling pipe, an antifreezing solution cavity, a drain valve, a water collecting box, a gas conveying pipe and an antifreezing solution pressure gauge), a water source heat pump, a heat storage and heat exchange water tank set (the heat storage and heat exchange water tank set consists of a plurality of sets of water tanks internally provided with heat exchange coil pipes, and water inlet and outlet on both sides of each water tank are provided with valves, a far-end water taking guide plate), a valve set, a water collecting and distributing node, a process controller and a heat exchanger (used; each air cooling air compressor and each liquid cooling air compressor need independently set up operating pressure, and the high temperature of water source heat pump and air source heat pump preparation is collected through water collecting and distributing node, and the high-pressure air that air cooling air compressor and liquid cooling air compressor prepared collects in the compressed air jar through the gas transmission pipeline.
The heat accumulation heat exchange water tank set is at least more than two sets of, the confession return water at every independent heat accumulation heat exchange water tank both ends of group all is equipped with valve group, the liquid cooling air compressor machine is the water heat accumulation in the water tank one by one, when a water tank heat accumulation to 40 ℃, close this water tank liquid cooling air compressor machine side valve group, open the second water tank and continue the heat accumulation, avoid the too high influence air compressor machine waste heat recovery of temperature in the water tank, avoid through heat accumulation heat exchange water tank that the compressor machine shuts down when compressed air jar pressure is sufficient, lead to heat pump set stop work.
The heat storage and heat exchange water tank set is characterized in that a water source heat pump unit absorbs heat in the water tanks one by one, when the temperature of a first water tank is reduced to 5 ℃, a valve set at the side of the water tank water source heat pump is closed, a second water tank is opened to extract heat, and the problem that the heating energy efficiency ratio of the heat pump unit is influenced due to the fact that the temperature of water in the water tank is too low is avoided.
The air cooling air compressor machine room seals most ventilation ducts in winter to store heat, utilizes the air source heat pump to recover the heat released by the air cooling air compressor, opens the ventilation ducts in a proper amount when the indoor temperature exceeds 40 ℃ in winter, quickly cools, closes most ventilation ducts when the indoor temperature is lower than 35 ℃, keeps the indoor temperature, opens all ventilation ducts in summer, and cools through natural temperature.
The compressed air tank is a double-layer tank body, the outer layer of the double-layer tank body is an antifreezing solution cavity, an antifreezing solution is simultaneously injected into the antifreezing solution cavity through a cooling pipe, a pressure gauge is arranged for observing the pressure of the antifreezing solution, the water source heat pump absorbs the temperature of air in the compressed air tank to reduce the temperature to 7 ℃ so as to enable the temperature to be close to a condensation point, the operation load of the heat pump is reduced while recovering compressed air, the condensation point of the compressed air is 2-5 ℃, the temperature is absorbed to 7 ℃, the operation load of a compressed air dehumidifier is reduced, and when the temperature in the air tank is lower than 7 ℃, a valve group of the compressed air tank is cut off.
Every two air-cooled air compressors and every two liquid-cooled air compressors are in one group, and a first group of air-cooled air compressors and a second group of liquid-cooled air compressors and a third group of liquid-cooled air compressors are respectively provided with working pressure of 0.5MPa-0.6MPa, 0.6MPa-0.7MPa and 0.7MPa-0.9MPa, so that the air compressors work step by step according to the pressure in the compressed air tank and continuously run, the shutdown caused by full air storage of the compressed air tank is avoided, and the stable operation of the waste heat recovery equipment is realized.
When monitoring that a high gas consumption process is to be carried out, the process controller transmits signals to the air cooling air compressor and the liquid cooling air compressor in advance, removes pressure limitation, carries out full-load operation, and restores the pressure limitation of the air cooling air compressor and the liquid cooling air compressor in advance before the high gas consumption process is finished, so that the phenomenon that the air compressor is stopped due to the fact that a compressed air tank is fully stored due to the full-load operation of the air compressor is avoided.
The heat source of the water source heat pump is cooling circulating liquid of a heat storage heat exchange water tank set and a compressed air tank which are heated by a liquid cooling air compressor, waste heat is recovered after the waste heat is collected through a water collection node and is used as source water supply, cooled source return water is respectively sent back to the compressed air tank and the heat storage heat exchange water tank set through a water distribution node, hot water prepared by high-temperature water supply and an air source heat pump is collected through the water collection node and is used for heat supply, return water after heat supply is respectively returned to the air source heat pump and the water source heat pump through the water distribution node to be heated.
When the high gas consumption process is started, the recovery temperature of the water source heat pump is increased, when the waste heat is too large, the operation power of the air source heat pump is reduced, the ventilation duct is opened, and the air cooling air compressor is naturally used for heat dissipation.
The invention has the beneficial effects that:
1. the possibility of stopping the air compressor is reduced by adjusting the working pressure of the air-cooled air compressor and the working pressure of the liquid-cooled air compressor under different conditions.
2. The condition that air pressure and air quantity are insufficient is effectively avoided by monitoring the production process, and meanwhile, when the high-air-consumption process is stopped, the pressure control of the air compressor is restored in advance, so that the running time of the air compressor is prolonged, and the air compressor is used as a second means for preventing the air compressor from stopping.
3. Prevent that the air compressor machine from shutting down and having set up multiunit heat accumulation water tank, when the air compressor machine shut down the operation, ensure the steady operation of system.
Drawings
FIG. 1 is a diagram of an example of the structure of the present invention in FIG. 1.
FIG. 2 is a diagram of an exemplary structure of the present invention in FIG. 2.
As shown therein: 1. an air cooling air compressor machine room (1-1. machine room outer wall, 1-2. ventilation duct, 1-3. air cooling air compressor 1, 1-4. air cooling air compressor 2, 1-5. air cooling air compressor 3, 1-6. air source heat pump), 2. liquid cooling air compressor set (2-1. liquid cooling air compressor 1, 2-2. liquid cooling air compressor 2, 2-3. liquid cooling 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 collecting box, 4-6. drain valve 2, 4-7. gas pipe, 4-8. antifreeze pressure gauge), 5. water source heat pump, 6. heat storage and heat exchange water tank set (6-1. water tank valve set 1, 6-2, 6-3, 6-4, 6-5, 6-6, heat exchange coil, 6-7, remote water intake guide plate) 7, pump 1, 8, pump 2, 9, 1, 10, 2, 11, 3, 12, gas collecting pipe, 13, water collecting node 1, 14, water distributing node 1, 15, water collecting node 2, 16, water distributing node 2, 17, process controller, 18, source backwater, 19, source water supply, 20, hot water supply 1, 21, hot water backwater 1, 22, hot water supply 2, 23, hot water backwater 2, 24, pump 3, 25, heat exchanger, 26, 4.
Detailed Description
The invention is further described below with reference to the figures and examples.
The first embodiment.
As shown in fig. 1:
the air-cooled air compressor machine room comprises an air-cooled air compressor machine room (1), and is characterized in that a ventilation channel (1-2) is arranged on the outer wall (1-1) of the machine room of the air-cooled air compressor machine room (1) and used for adjusting the temperature of the machine room and feeding air, the air-cooled air compressor machine (1-3) is arranged inside the machine room, the working pressure is 0.5-0.6 MPa, the air-cooled air compressor machine (2 (1-4) is used for working pressure of 0.6-0.7 MPa, the air-cooled air compressor machine (3-5) is used for working pressure of 0.7-0.9 MPa, and an.
The liquid cooling air compressor unit (2) comprises a liquid cooling air compressor (2-1), a working pressure of 0.5MPa-0.6MPa, a liquid cooling air compressor (2-2), a working pressure of 0.6MPa-0.7MPa, a liquid cooling air compressor (3) (2-3) and a working pressure of 0.7MPa-0.9 MPa. The cooling tower (3) is used for dissipating heat of the liquid cooling air compressor unit (2) in summer.
The heat storage and heat exchange water tank set (6) is used for recovering waste heat of the liquid cooling air compressor unit (2), the waste heat is heated up through injecting the heat exchange coil (6-6) into the water storage cavity (6-5) through the coil, a flow channel formed by the far-end water taking guide plate (6-7) after the water in the water storage cavity (6-5) is heated up is conveyed to a water source heat pump (5) through the pump 1(7), and when the temperature of the liquid cooling waste heat of the air compressor is too high, the water tank is switched to the water tank valve set 2(6-2) for heat storage through switching the water tank valve set 1 (6-1).
The heat source of the water source heat pump (5) is cooling circulating liquid of the heat storage heat exchange water tank set (6) and the compressed air tank (4), the pump (7) is used for circulating, waste heat is collected through the water collection nodes 1 and 13 and then recovered to be used as source water supply (19), and the cooled source return water (18) is respectively sent back to the compressed air tank (4) and the heat storage heat exchange water tank set (6) through the water distribution nodes 1 and 14). Hot water supply 1(20) prepared by the water source heat pump (5) and hot water supply 2(22) prepared by the air source heat pump (1-6) are collected through the water collection node 2(15) by utilizing the circulation of the pump 2(8) for supplying heat, return water after heat supply passes through the water distribution node 2(16), hot water return water 2(23) and hot water return water 1(21) respectively return to the air source heat pump (1-6) and the water source heat pump (5) for heating again, and the circulation is completed.
When the temperature of the first water tank of the heat storage and exchange water tank group (6) is too low, the water tanks are switched by switching the water tank valve group 3(6-3) and the water tank valve group 4(6-4), so that the water storage cavity (6-5) with higher temperature is utilized.
The compressed air tank (4) is used for storing compressed air produced by the air-cooled air compressor unit and the liquid-cooled air compressor unit (2) and collecting the compressed air through the gas collecting pipe (12), the shell of the compressed air tank (4) is double-layer to form an antifreezing solution cavity (4-3), antifreezing solution is injected into the cavity, the inner disk of the antifreezing solution cavity (4-3) is provided with the cooling pipe (4-2), an antifreezing solution pressure gauge (4-8) is arranged for the antifreezing solution cavity (4-3), the bottom of the tank cavity (4-1) is provided with the drain valve 1(4-4), the water collecting box (4-5) and the drain valve 2(4-6), the drain valve 1(4-4) is opened firstly during drainage to enable water in the tank cavity (4-1) to flow into the water collecting box (4-5), and the drain valve 1(4-4) is closed after the water in the tank is collected by the water collecting, the drain valve 2(4-6) is opened to drain the water in the compressed air tank (4).
The valve group 1(9) is used for controlling the flow of the air source heat pump (1-6), when the residual heat quantity recovered by the water source heat pump (5) is sufficient, the air source heat pump (1-6) is lowered, the valve group 2(10) is used for closing the cooling tower (3) in winter to enable cooling liquid to circulate to the water source heat pump (5), and the valve group 3(11) is used for adjusting the residual heat recovery temperature of the compressed air tank (4).
Example two.
As shown in fig. 2:
the air-cooled air compressor machine room comprises an air-cooled air compressor machine room (1), and is characterized in that a ventilation channel (1-2) is arranged on the outer wall (1-1) of the machine room of the air-cooled air compressor machine room (1) and used for adjusting the temperature of the machine room and feeding air, the air-cooled air compressor machine (1-3) is arranged inside the machine room, the working pressure is 0.5-0.6 MPa, the air-cooled air compressor machine (2 (1-4) is used for working pressure of 0.6-0.7 MPa, the air-cooled air compressor machine (3-5) is used for working pressure of 0.7-0.9 MPa, and an.
The liquid cooling air compressor unit (2) comprises a liquid cooling air compressor (2-1), a working pressure of 0.5MPa-0.6MPa, a liquid cooling air compressor (2-2), a working pressure of 0.6MPa-0.7MPa, a liquid cooling air compressor (3) (2-3) and a working pressure of 0.7MPa-0.9 MPa. The cooling tower (3) is used for dissipating heat of the liquid cooling air compressor unit (2) in summer.
The compressed air tank (4) is used for storing compressed air produced by the air-cooled air compressor unit and the liquid-cooled air compressor unit (2) and collecting the compressed air through the gas collecting pipe (12), the shell of the compressed air tank (4) is double-layer to form an antifreezing solution cavity (4-3), antifreezing solution is injected into the cavity, the inner disk of the antifreezing solution cavity (4-3) is provided with the cooling pipe (4-2), an antifreezing solution pressure gauge (4-8) is arranged for the antifreezing solution cavity (4-3), the bottom of the tank cavity (4-1) is provided with the drain valve 1(4-4), the water collecting box (4-5) and the drain valve 2(4-6), the drain valve 1(4-4) is opened firstly during drainage to enable water in the tank cavity (4-1) to flow into the water collecting box (4-5), and the drain valve 1(4-4) is closed after the water in the tank is collected by the water collecting, the drain valve 2(4-6) is opened to drain the water in the compressed air tank (4).
The heat exchanger (25) is used for isolating oil or other cooling media of the liquid cooling air compressor unit (2), the medium is circulated by the pump (7), liquid cooling at the other end of the heat exchanger is circulated by the pump (4), (26), and heat is stored to the heat storage and exchange water tank group (6).
The heat storage and heat exchange water tank set (6) is used for recovering waste heat exchanged by the heat exchanger (25) from the liquid cooling air compressor set (2), the waste heat is heated up through injecting the heat exchange coil (6-6) and water in the water storage cavity (6-5) through the coil, a flow channel formed by a far-end water taking guide plate (6-7) after the water in the water storage cavity (6-5) is heated up is conveyed to a water source heat pump (5) through a pump (1) (7), and when the temperature of the liquid cooling waste heat of the air compressor is too high, the water tank valve set (2 (6-2) is switched to the water tank for heat storage through the switching water tank valve set (1) (6-1).
The heat source of the water source heat pump (5) is cooling circulating liquid of the heat storage heat exchange water tank set (6) and the compressed air tank (4), the pump (7) is used for circulating, waste heat is collected through the water collection nodes 1 and 13 and then recovered to be used as source water supply (19), and the cooled source return water (18) is respectively sent back to the compressed air tank (4) and the heat storage heat exchange water tank set (6) through the water distribution nodes 1 and 14). Hot water supply 1(20) prepared by the water source heat pump (5) and hot water supply 2(22) prepared by the air source heat pump (1-6) are collected through the water collection node 2(15) by utilizing the circulation of the pump 2(8) for supplying heat, return water after heat supply passes through the water distribution node 2(16), hot water return water 2(23) and hot water return water 1(21) respectively return to the air source heat pump (1-6) and the water source heat pump (5) for heating again, and the circulation is completed.
When the temperature of the first water tank of the heat storage and exchange water tank group (6) is too low, the water tanks are switched by switching the water tank valve group 3(6-3) and the water tank valve group 4(6-4), so that the water storage cavity (6-5) with higher temperature is utilized.
The valve group 1(9) is used for controlling the flow of the air source heat pump (1-6), when the residual heat quantity recovered by the water source heat pump (5) is sufficient, the air source heat pump (1-6) is lowered, the valve group 2(10) is used for closing the cooling tower (3) in winter to enable cooling liquid to circulate to the water source heat pump (5), and the valve group 3(11) is used for adjusting the residual heat recovery temperature of the compressed air tank (4).
The present invention is not limited to the embodiment, and any equivalent idea or change within the technical scope of the present invention is to be regarded as the protection scope of the present invention.
Claims (7)
1. Air compressor machine heat accumulation prevents shutting down waste heat recovery system, its characterized in that:
the system comprises an air-cooled air compressor machine room (1), a liquid-cooled air compressor unit (2), a cooling tower (3), a compressed air tank (4), a water source heat pump (5), a heat storage and exchange water tank set (6), a valve bank, a water collecting and distributing node, a process controller (17) and a heat exchanger (25); working pressure is required to be independently set for each air-cooled air compressor and each liquid-cooled air compressor, high temperature prepared by the water source heat pump (5) and the air source heat pump (1-6) is collected through the water collecting and distributing node, and high-pressure air prepared by the air-cooled air compressors and the liquid-cooled air compressors is collected into the compressed air tank (4) through the air collecting pipe (12);
the air cooling air compressor machine room comprises a machine room outer wall (1-1) provided with a plurality of ventilation ducts (1-2), equipment in the machine room comprises 3 air cooling air compressors (1-3), (1-4), (1-5) and an air source heat pump (1-6), and the technology at least needs to use three or more air cooling air compressor units and three or more liquid cooling air compressor units to carry out coupling type waste heat regulation and utilization;
the compressed air tank (4) comprising at least: a tank cavity (4-1) and a cooling pipe (4-2) are coiled in an antifreezing solution cavity (4-3), the top of the antifreezing solution cavity (4-3) is provided with an antifreezing solution pressure gauge (4-8), the bottom of a compressed air tank (4) is provided with a drain valve 1(4-4), the bottom of the drain valve (4-4) is connected with a water collecting box (4-5), the bottom of the water collecting box is provided with a drain valve 2(4-6), and the top of the compressed air tank (4) is provided with a gas conveying pipe (4-7);
the anti-freezing solution pressure gauge (4-8) is used for observing the pressure of anti-freezing solution, the water source heat pump (5) absorbs the temperature of air in the compressed air tank (4) to reduce the temperature to 7 ℃ so that the temperature is close to a condensation point, the running load of the water source heat pump (5) is reduced while compressed air is recovered, the condensation point of the compressed air is 2-5 ℃, the temperature is absorbed to 7 ℃, the running load of a compressed air dehumidifier is reduced, and when the temperature in the air tank is lower than 7 ℃, a valve group 4(11) of the compressed air tank (4) is cut off to avoid the reduction of the running efficiency of the water source heat pump (5);
the heat storage and exchange water tank set (6) is formed by combining a plurality of water tanks, the water storage cavity (6-5) in the water tank is provided with the heat exchange coil (6-6), water taken by the water source heat pump (5) is taken by the remote water taking guide plate (6-7), and the water taken by the water storage cavity (6-5) in the water tank is ensured to be subjected to sufficient heat exchange, so that low-temperature water is prevented from directly entering the water source heat pump (5).
2. The air compressor heat storage shutdown prevention waste heat recovery system according to claim 1, characterized in that: the heat storage and exchange water tank set (6) comprises at least two groups, each group is used for independently storing heat, water supply and return water at two ends of the heat storage and exchange water tank are provided with water tank valve sets, the liquid-cooled air compressors are used for storing heat of water in the water tanks one by one, when one water tank is used for storing heat to 40 ℃, the side water tank valve set 1(6-1) of the liquid-cooled air compressor of the water tank is closed, the second water tank valve set 2(6-2) is opened for continuously storing heat, the problem that the waste heat recovery of the liquid-cooled air compressor is influenced due to overhigh water temperature in the water tank is avoided, and the heat storage and exchange water;
the water source heat pump (5) absorbs heat in the heat storage and exchange water tank set (6) one by one, when the temperature of the first water tank is reduced to 5 ℃, the water tank valve set 3(6-3) on the side of the water source heat pump of the water tank is closed, the second water tank valve set 4(6-4) is opened, heat is extracted, and the problem that the heating energy efficiency ratio of the heat pump set is influenced due to the fact that the water temperature in the water tank is too low is avoided.
3. The air compressor heat storage shutdown prevention waste heat recovery system according to claim 1, characterized in that: every two air-cooled air compressors and every two liquid-cooled air compressors are combined into a group, and a first group of air-cooled air compressors and a second group of liquid-cooled air compressors and a third group of liquid-cooled air compressors are respectively provided with working pressure of 0.5MPa-0.6MPa, 0.6MPa-0.7MPa and 0.7MPa-0.9MPa, so that the air compressors work step by step according to the pressure in the compressed air tank (4) to continuously run, the shutdown caused by the air full storage of the compressed air tank (4) is avoided, and the stable operation of the waste heat recovery equipment is realized;
when monitoring that a high-gas-consumption process is to be carried out, the process controller (17) transmits signals to the air-cooling air compressor and the liquid-cooling air compressor in advance, removes pressure limitation, carries out full-load operation, and recovers the pressure limitation of the air-cooling air compressor and the liquid-cooling air compressor in advance before the high-gas-consumption process is finished, so that the problem that the air compressor is stopped because the compressed air tank (4) is fully stored due to the full-load operation of the air compressor is avoided, and a water source heat pump (5) is not available with heat and influences the.
4. The air compressor heat storage shutdown prevention waste heat recovery system according to claim 1, characterized in that: when the high gas consumption process is started, the recovery temperature of the water source heat pump (4) is increased, when the waste heat is too large, the operation power of the air source heat pump (1-6) is reduced, the ventilation duct (1-2) is opened, and the heat is naturally dissipated by the air cooling air compressor.
5. The air compressor heat storage shutdown prevention waste heat recovery system according to claim 1, characterized in that: the heat source of the water source heat pump (5) is heat exchanged by the heat storage heat exchange water tank group (6) and cooling circulating liquid of a compressed air tank, the heat is collected by the water collection node 1(13) and then recovered as source water, cooled source return water is respectively sent back to the compressed air tank (4) and the heat storage heat exchange water tank group (6) through the water distribution node 1(14), hot water prepared by high-temperature water supply and the air source heat pump (1-6) is collected by the water collection node 2(15) and used for heat supply, and the return water after heat supply respectively returns to the air source heat pump (1-6) and the water source heat pump (5) through the water distribution node 2(16) and is heated again, so that circulation is completed.
6. The air compressor heat storage shutdown prevention waste heat recovery system according to claim 1, characterized in that: the anti-freezing liquid in the anti-freezing liquid cavity (4-3) of the compressed air tank (4) is in a normal pressure state, so that the water pressure is lower than the pressure of the compressed air in the compressed air tank (4), the leakage problem is avoided, and when the tank body is broken, the compressed air can ensure that the anti-freezing liquid cannot flow into the tank cavity (4-1).
7. The air compressor heat storage shutdown prevention waste heat recovery system according to claim 1, characterized in that: the air cooling air compressor machine room (1) is used for sealing most ventilation channels in winter to store heat, the heat released by the air cooling air compressor is recovered by using the air source heat pump (1-6), when the indoor temperature exceeds 40 ℃ in winter, the ventilation channels (1-2) are opened in a proper amount for rapid cooling, when the indoor temperature is lower than 35 ℃, most ventilation channels are closed to keep the indoor temperature, and all ventilation channels (1-2) are opened in summer to cool through natural temperature.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911309055.XA CN110886689A (en) | 2019-12-18 | 2019-12-18 | Heat storage and shutdown prevention waste heat recovery system of air compressor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911309055.XA CN110886689A (en) | 2019-12-18 | 2019-12-18 | Heat storage and shutdown prevention waste heat recovery system of air compressor |
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| CN110886689A true CN110886689A (en) | 2020-03-17 |
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| CN201911309055.XA Pending CN110886689A (en) | 2019-12-18 | 2019-12-18 | Heat storage and shutdown prevention waste heat recovery system of air compressor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111780202A (en) * | 2020-07-09 | 2020-10-16 | 扬州大学 | Energy storage heating system based on air compressor machine waste heat recovery |
| CN115182867A (en) * | 2022-06-28 | 2022-10-14 | 宁德厦钨新能源材料有限公司 | Water temperature balance control method and device for air compressor waste heat recovery |
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2019
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111780202A (en) * | 2020-07-09 | 2020-10-16 | 扬州大学 | Energy storage heating system based on air compressor machine waste heat recovery |
| CN115182867A (en) * | 2022-06-28 | 2022-10-14 | 宁德厦钨新能源材料有限公司 | Water temperature balance control method and device for air compressor waste heat recovery |
| CN115182867B (en) * | 2022-06-28 | 2023-10-27 | 宁德厦钨新能源材料有限公司 | Water temperature balance control method and device for waste heat recovery of air compressor |
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