CN2229636Y - Energy-saving device for engine-driven air-conditioning power generation system - Google Patents

Abstract

An energy saving system device mainly comprises: the heat recovery device of the sound-deadening box is characterized in that an engine, a compressor linked with the engine and connected with a cold air system and a generator are arranged in the sound-deadening box, and an air flow is guided into the box through an air inlet pipe to absorb heat in the box and then is introduced into a heat exchanger to heat a water flow; a refrigerant condensation heat recovery device for recovering the heat released by the refrigerant after compression and condensation by the compressor and heating the water flow; an engine water jacket heat recovery device absorbs heat of an engine cylinder body through an engine water jacket by utilizing heat medium circulation; and an engine flue gas waste heat recovery device and recovering waste heat of engine exhaust.

Description

Energy-saving device for engine-driven air-conditioning power generation system

The utility model relates to an energy saving system device.

The air-conditioning system of a known building generally uses public electricity to supply power to the motor and then drives the compressor to circulate the condensate in the circulating air-conditioning system. The motor is powered by electricity and then drives the compressor to convert electrical energy into mechanical energy. There is an energy conversion loss during the process. , and the emergency power supply system of a building, when the public power is interrupted, the self-provided diesel engine generator starts to generate electricity and then drives the air-conditioning system mainly based on the compressor. The generated heat is not recycled, resulting in a waste of energy.

The purpose of the utility model is to innovate an energy-saving system device, which aims to directly link the engine with the compressor to reduce unnecessary energy conversion losses, and recycle the heat generated by the engine, flue gas, and condensation to effectively save energy.

The technical solution to achieve the above purpose is to design a heat recovery device for the silencer box, and put the compressor and generator connected to the heavy oil, diesel oil, gasoline or gas engine and an air-conditioning refrigeration system linked with it into the silencer box. The sound-absorbing box is made of sound-absorbing wall material. There is an air intake pipe at the bottom and an air suction pipe above. The heated hot water is sent to a hot water storage tank for standby; a refrigerant condensation heat recovery device includes a refrigerant heat exchanger system, and a cold water flow absorbs the condensation heat released from the compressor to compress the refrigerant and then flows into the hot water storage tank The tank is reserved; in the heat exchanger, the heat of the heated heat medium is absorbed by a cold water flow, and the cold water flow is pumped through a cold water tank; an engine flue gas waste heat recovery device includes a primary flue gas heat exchanger, The flue gas from the engine exhaust pipe is introduced into the primary heat exchanger to exchange heat with the cold water pumped from the cold water tank; the flue gas enters the primary exchanger to exchange heat with the preheated water flow from the water jacket heat exchanger Exchange heat with the heated water flow from the primary flue gas heat exchanger, heat and vaporize the water flow into high-pressure steam, and the exhaust gas is washed and dusted by the silencer pipe and water scrubber before being discharged; the heated water steam of the secondary heat exchanger Drive to drive one of its linked generators to generate electricity for power consumption; and an auxiliary generator is coupled with an electromagnetic clutch to drive it to generate electricity for parallel output for excessive power consumption.

The utility model has the advantage that the engine directly drives the air-conditioning compressor, which can reduce the energy conversion loss of electrical energy and mechanical energy, and absorb the waste heat in the silencer box, the water jacket heat in the engine cylinder block, and the flue gas, or supply hot water; Or supply some electrical appliances for power generation, which can save public power, so it can greatly save energy, and has innovative practicability.

Accompanying drawing is the utility model flow chart. Below in conjunction with accompanying drawing for further explanation:

With reference to this figure, it can be known that this creation mainly includes: a silencer box recovery heat recovery device (3) with an engine (1) and a compressor (21) connected with a refrigeration or air-conditioning system (2) linked with it and an auxiliary The generator (9) is placed in a silencer box (30), an air-conditioning system refrigerant condensation heat recovery device (22); an engine water jacket heat recovery device (4), an engine flue gas waste heat recovery device (5, 6), and a steam turbine (7) and generator (8).

The muffler box heat recovery device (3) mainly contains a muffler box (30) made of a sound-absorbing wall material, and an original engine (1) is built into it, and it can be selected from a diesel engine, a heavy oil engine, a gasoline engine or a gas engine and the same as the original engine. The air-conditioning system (2) compressor (21) of engine linkage and an auxiliary generator (9) also comprise an air extraction pipe (31) stretching into the top in the case (30), an air extraction machine (32), and an air exhauster (32). Speaker heat exchanger (33) and a hot water storage tank (34). The bottom of the box (30) and the bottom of the compressor and the original motor are all with shock absorbers (301) such as gas heat or spring pads to absorb the vibration force in the mechanical operation, so as to reduce its noise pollution. There is an air intake pipe (302) at the bottom of the muffler box, to cooperate with the operation of the exhaust pipe (31) to introduce an appropriate amount of cold air flow to take away the heat generated around it when the machine is running. The hot water storage tank (34) can be made up of multiple storage tanks connected in series, and contains an inlet flow (341), which is pumped out by a pump (342), and a flow flows through a branch pipe (343) and enters the shell of the silencer box heat exchanger (33) end, in order to absorb the heat extracted from the exhaust pipe (31). After the shell end is heated, the water flows into the heat storage tank (34) to store or output hot water through the pipe (345), or to provide preheated water for boiler feed water.

The main shaft (1a) coupling (1b) of the engine (1) is connected to the transmission shaft (210) of the compressor (21) of the cooling system (2). The air-conditioning system (2) includes: the compressor (21), the refrigerant condensing heat exchanger (22), which passes the compressed refrigerant liquid through the input pipe (211) into the shell end of the exchanger and the pump (342) from the pipe end. The pump introduces the water flow at the pipe end of the exchanger through another branch pipe (344) for heat exchange, and the water flow through the absorption heat of condensation flows back to the hot water storage tank (34) by the pipe end output pipe (222) for standby. After the refrigerant liquid flows into the condenser (23), it is expanded by the expansion valve (24) and evaporated by the evaporator (25) to absorb the heat of evaporation to reduce the temperature of a water stream such as ice water for air conditioning or other refrigeration applications. The vaporized refrigerant returns to the compressor (21) through the pipe (251), and is compressed for another compression cycle.

The engine water jacket heat recovery device (4) comprises: a water jacket heat exchanger (40), a heat medium supplement tank (41) and a cold water supply tank (46). The shell end coupling output pipe (42) of the water jacket heat exchanger (40) passes through a three-way valve (412), and the water jacket water inlet pipe (43) is pumped (11) by the water jacket (12) to serve as the heat medium. The water flow is pumped into the water jacket to take away the heat on the engine cylinder wall or body through the water outlet pipe (44) and pump it back into the shell of the exchanger (40). Water fills in the water inlet pipe (43). The supplementary tank (41) then supplements the water source by the water inlet pipe (410). Generally, the outlet water temperature of the water jacket is as high as 90°C. The hot water is absorbed by the cold water at the pipe end of the exchanger (40), and the cold water is pumped (462) from the cold water tank (46) into the exchanger through the cold water pipe (463). (40) After the pipe end is heated, it is output to the shell end of the secondary heat exchanger (6) of the engine flue gas waste heat recovery device by the pipe end outlet pipe (45).

The combustion air source of the engine (1) is filtered by the air cleaner (14), introduced into the engine and mixed with fuel for combustion, and the exhaust gas is discharged from the flue gas exhaust pipe (13), the temperature can be as high as 480°C, and the waste heat of the flue gas The tube ends of the primary heat exchanger (5) of the recovery device exchange heat with the cold water pumped in from the shell end through the tube (464), and the hot water is output from the tube (52) and the water from the exchanger (40) outlet tube (45). The hot water flows into the shell end of the secondary heat exchanger (6), and then absorbs the waste heat of the flue gas partially removed by the primary exchanger (5). At this time, most of the water in the shell end output pipe (61) is vaporized into high-pressure water The steam is introduced into the steam turbine (7) to drive the main shaft of the turbine (71) to generate electricity for the load end (81) with the linkage generator (8). The generator (8) can be started by the starter motor (82). The condensed water of the turbine (7) is introduced into the cold water tank (46) by the outlet pipe (72) for recycling. The electricity sent by the generator (8) can also be used for local power supply inside the building such as lighting, instrument control or other electricity consumption to save energy.

At the same time, when the auxiliary generator (9) needs too much electricity, the main shaft (2a) at the other end of the engine (1) is coupled to the electromagnetic clutch (2b) and the generator (9) is coupled to the generator (9) to make it run to generate electricity and output it to the load end (91) via the electromagnetic Contact three switches are used in parallel with (81) load terminal line for use.

The flue gas of the primary exchanger (5) passes through the primary heat exchange and then enters the pipe end of the secondary exchanger (6) through the pipe (51) and is absorbed by the water flow at the shell end. (62) Enter the washing tower (63); after the water flow (631) is sprayed by the nozzle (632), the dust, carbon powder or some gases such as NO, CO, SO and other harmful gases are washed away from the lower drain pipe (633) Collect and process, and the purified waste gas is discharged from the upper chimney (634). Relevant washing tower purification treatment is aimed at eliminating air pollution, but is a known technology, not belonging to the scope of this invention.

The heat exchanger used in the utility model is not limited to the shell-and-tube type, and other heat exchangers such as casing heat exchangers, screw-plate heat exchangers or other types of heat exchangers can be used.

The engine (1) can adopt a low-pollution or non-pollution engine in accordance with the regulations of the environmental protection unit to meet national standards or regulations on pollution management.

Claims (2)

1. An energy-saving system device, characterized in that: there is a heat recovery device for sound-absorbing sound box, and the selected heavy oil, or diesel oil, or gasoline, or a gas engine and a compressor coupled with an air-conditioning refrigeration system are placed in the same In the muffler box, the muffler box is made of sound-absorbing wall material. There is an air intake pipe at the bottom and an air exhaust pipe at the top. After the flow absorbs heat, it becomes hot water and transports it to a hot water storage tank; in a refrigerant condensation heat recovery device including a refrigerant heat exchanger, a cold water flow absorbs the condensation heat released from the compressed refrigerant liquid and then flows into the hot water storage tank; In the exchanger, the heat of the heated heat medium is absorbed by a cold water flow, and the cold water flow is pumped through a cold water tank; an engine flue gas waste heat recovery device includes a primary flue gas heat exchanger, and the engine The flue gas from the exhaust pipe is introduced into the primary heat exchanger to exchange heat with the preheated water flow from the water jacket heat exchanger and the heated water flow from the primary heat exchanger, and the water flow is heated and vaporized into high-pressure steam, and the exhaust gas is silenced The tube and the water scrubber are washed and dust-removed, and then the hot water steam from the secondary heat exchanger is used to drive a steam turbine to drive a generator linked with it to generate electricity. A coupled electromagnetic clutch is coupled to the generator to generate electricity and output electricity. 2. The energy-saving system device according to claim 1, characterized in that the water jacket heat exchanger (40) includes a heat medium supplement tank (41) for supplementing the heat medium water flow loss in the heat exchanger.

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