CN103742416A - Waste heat recovery system of water injection screw air compressor - Google Patents

Waste heat recovery system of water injection screw air compressor Download PDF

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Publication number
CN103742416A
CN103742416A CN201410039408.XA CN201410039408A CN103742416A CN 103742416 A CN103742416 A CN 103742416A CN 201410039408 A CN201410039408 A CN 201410039408A CN 103742416 A CN103742416 A CN 103742416A
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oil
water
temperature
air compressor
pipe
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CN201410039408.XA
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CN103742416B (en
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陈万东
王刚
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Shanghai Rui Chen environmental protection Polytron Technologies Inc
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SHANGHAI RICHEN ENVIRONMENTAL TECHNOLOGY Co Ltd
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Abstract

The invention provides a waste heat recovery system of a water injection screw air compressor. The waste heat recovery system comprises a heat exchanger, an oil temperature control system, a constant temperature water supply system, an oil cooler which is connected with the oil temperature control system and a cooling water control system which is connected with the oil cooler, wherein the oil temperature control system and the constant temperature water supply system are connected with the heat exchanger; the oil temperature control system comprises an oil temperature sensor, a three-way control valve and an oil temperature control device which is connected with the oil temperature sensor and the three-way control valve. Compared with the prior art, the waste heat recovery system of the water injection screw air compressor can monitor the temperature of lubricating oil and circulating water by a sensor technology in real time, and can also control and adjust strictly. The damage to a compressor machine which is caused by too high oil temperature is avoided, the electricity consumption of a water pump is reduced, high efficiency and stability for the operation of the equipment are ensured, and the purpose of energy saving is achieved.

Description

Water-cooled oil injected screw waste heat recovery system of air compressor
Technical field
The present invention relates to air compressor technology, relate in particular to a kind of water-cooled oil injected screw waste heat recovery system of air compressor.
Background technique
Exhaust end base of oil injection threaded bolt formula air compressor has become the main flow of world today air compressor development, and it can be widely used in mining, machine-building, building, weaving, petrochemical industry and other needs the place of pressurized gas.Existing exhaust end base of oil injection threaded bolt air compressor system mainly comprises air compressor, deaerator and oil cooler, during operation, circulation cooling lubrication oil in air compressor enters in oil cooler after deaerator, by oil cooler, carrying out cooling rear recirculation is back in air compressor, in the whole service process of exhaust end base of oil injection threaded bolt air compressor, about 90% input electric energy conversion is for heat energy, wherein surpassing 70% heat energy is recycled cutting oil and directly brings in oil cooler, by being dissipated with cooling medium heat exchange in oil cooler, in this process, a large amount of heat energy fails to be used effectively, caused and wasted, discontented podomere energy requirement.
Summary of the invention
Technical problem solved by the invention is to provide a kind of water-cooled oil injected screw waste heat recovery system of air compressor, the heat that its energy high efficiente callback compressor operation produces, simultaneously, temperature when the strict controlled circulation lubricant oil of energy is back to air compressor, avoid handpiece of air compressor impaired, also the efficiency that has improved operation, has reached energy-conservation object.
For solving the problems of the technologies described above, the present invention adopts following technological scheme: a kind of water-cooled oil injected screw waste heat recovery system of air compressor, the oil temperature control system that comprise a heat exchanger, connects described heat exchanger with constant temperature water system, be connected the oil cooler of described oil temperature control system and the cooling water control system being connected with this oil cooler; Described oil temperature control system comprises oil temperature sensor, three-way control valve, the oil-temperature control device being connected with modulating valve with described oil temperature sensor; The temperature of the lubricant oil that described oil temperature sensor Real-Time Monitoring automatic heat-exchanger is discharged, and temperature data is fed back to described oil-temperature control device, described oil-temperature control device regulates and controls described three-way control valve according to this temperature data.
As the further improvement of the technical program, described heat exchanger is a heat exchanger, and its both sides are connected with respectively transport pipe and conduit pipe, and described heat exchanger is provided with filler opening and the oil outlet that is positioned at a side and water intake and the water outlet that is positioned at opposite side; On described transport pipe and conduit pipe, be equipped with valve; Described transport pipe comprises the oil inlet pipe that connects filler opening and the oil outlet tube that connects oil outlet, and described conduit pipe comprises and connects the intake pipe of water intake and the outlet pipe of connection water outlet.
As the further improvement of the technical program, described three-way control valve is electric three-way ratio adjusting valve, and it has two input ports and an output port; In described two input ports, an input port accesses described oil outlet tube, and another input port is connected on described oil inlet pipe by pipeline.
As the further improvement of the technical program, described constant temperature water system comprises cooling-water temperature sensor, recycle pump and water temperature control device; Described cooling-water temperature sensor is installed on described outlet pipe, and described recycle pump is installed on described intake pipe; On pipeline between described recycle pump and heat exchanger water intake, also access a branch line, the other end of this branch line is connected on described outlet pipe.
Further improvement as the technical program, the temperature of the water that described cooling-water temperature sensor Real-Time Monitoring automatic heat-exchanger is discharged, and temperature data is fed back to described water temperature control device, described water temperature control device regulates the working state of controlling described recycle pump according to this temperature data.
Compared with prior art, the present invention can be to lubricant oil and circulating water by sensor technology temperature Real-Time Monitoring, and carry out strict control and adjust, avoided oil temperature too high and damage air compressor, simultaneously, also reduce the power consumption of water pump, ensured the efficient and stability of equipment operation, also reached energy-conservation object.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of water-cooled oil injected screw waste heat recovery system of air compressor of the present invention.
Embodiment
Refer to shown in Fig. 1, the invention provides a kind of water-cooled oil injected screw waste heat recovery system of air compressor 100, it is connected with a water-cooled oil injected screw air compressor 200, and described water-cooled oil injected screw air compressor 200 is also connected with a gas-oil separating cylinder 300.The oil temperature control system 20 that described residual neat recovering system 100 comprises a heat exchanger 10, connect described heat exchanger 10 with constant temperature water system 30, be connected the oil cooler 40 of described oil temperature control system 20 and the cooling water control system 50 being connected with this oil cooler 40.
Described heat exchanger 10 is a heat exchanger, and its both sides are connected with respectively transport pipe and conduit pipe, are equipped with valve 11 on described transport pipe and conduit pipe.Described heat exchanger is one oil-water plate type heat exchanger, and it is provided with filler opening 12 and the oil outlet 13 that is positioned at a side and water intake 14 and the water outlet 15 that is positioned at opposite side.Described transport pipe comprises the oil inlet pipe 18 that connects filler opening 12 and the oil outlet tube 19 that connects oil outlet 13, and described conduit pipe comprises and connects the intake pipe 16 of water intake 14 and the outlet pipe 17 of connection water outlet 15.
Described oil temperature control system 20 comprises oil temperature sensor 21, three-way control valve 22, connect control described oil temperature sensor 21 and modulating valve 22 oil-temperature control device 23(for example: PLC control cabinet).Described modulating valve 22 is preferably electric three-way ratio adjusting valve, it is interflow formula structure, there is two input ports and an output port, in described two input ports, an input port accesses described oil outlet tube 19, another input port is connected on described oil inlet pipe 18 by pipeline, and described output port is connected to a described oil cooler 40 by pipeline.Owing to being the high temperature grease that comes from air compressor 200 in described oil inlet pipe 18, it in described oil outlet tube 19, is the cooled subzero oil of process heat exchanger heat exchange.The temperature data of oil temperature sensor 21 described in described oil-temperature control device 23 Real-time Obtainings, and regulate described modulating valve 22 according to this temperature data, by regulating the open degree of the port of described modulating valve 22, realize the temperature of lubricant oil is controlled, make the temperature of lubricant oil reach setting value, thereby prevent from because of excess Temperature, causing when lubricant oil is back to air compressor 200 the head coking of air compressor 200, avoided air compressor 200 impaired.
Described constant temperature water system 30 for example comprises cooling-water temperature sensor 31, recycle pump 32 and water temperature control device 33(: PLC control cabinet).Described cooling-water temperature sensor 31 is installed on described outlet pipe 17, for monitoring the temperature of the circulating water of discharging from heat exchanger.Described recycle pump 32 is installed on described intake pipe 16, for circulating water is delivered in heat exchanger.On pipeline between described recycle pump 32 and heat exchanger water intake 14, also access a branch line 34, the other end of this branch line 34 is connected on described outlet pipe 17.Described outlet pipe 17 interior conveyings be high-temperature water, described intake pipe 16 interior conveyings be low temperature water.Described water temperature control device 33 is connected with recycle pump 32 with described cooling-water temperature sensor 31, and can carry out the working state of controlled circulation pump 32 according to the temperature data of cooling-water temperature sensor 31, makes supply water temperature reach setting value, ensures and can stablize heat-obtaining with hot junction.
One end of described oil cooler 40 is connected with the output port of three-way control valve 22 in described oil temperature control system 20 by pipeline, for the lubricant oil from heat exchanger is introduced in oil cooler 40, and by pipeline, lubricant oil is back in air compressor 200 after supercooling.The other end of described oil cooler 40 accesses recirculated cooling water by pipeline, and described pipeline comprises water pipe 41 and waste pipe 42.
Described cooling water control system 50 comprises the circulating water pump 51 that is positioned on described oil cooler 40 water pipes 41, be for example positioned at cooling-water temperature sensor 52 on oil cooler 40 waste pipes 42 and cooling water control device 53(: PLC control cabinet).Described cooling water control device 53 is by the temperature of the circulating water in the real-time sensing waste pipe 42 of cooling-water temperature sensor 52, and according to this temperature data, carry out the work of circulating water pump 51 described in regulating and controlling, thereby further adjust return water temperature and reach setting value, so can reduce circulating water pump 51 operation frequencies, reduce power consumption.
During operation, high temperature grease in described air compressor 200 arrives in gas-oil separating cylinder 300 by pipeline, after Oil-gas Separation is processed, via oil inlet pipe 18, enter and in heat exchanger, carry out heat exchange, heat is passed to hot junction by circulating water, simultaneously, lubricant oil is discharged heat exchanger through oil outlet tube 19, and after oil temperature control system 20, enter in oil cooler 40, by this oil cooler 40, carry out heat exchange for the second time, make lubricant oil be cooled to rational temperature, then be back in air compressor 200 from oil cooler 40 by pipeline, complete once circulation.Described oil temperature control system 20 utilizes sensor technology to carry out regulating valve, thereby oil temperature is strictly controlled, and makes the lubricating oil temperature that refluxes suitable, has avoided excess Temperature and damages the situation of air compressor 200 heads.Meanwhile, utilize described constant temperature water system 30, and combined sensor technology, the temperature of circulating water is strictly controlled, reduced the operation frequency of water pump, reached energy-conservation object.
In sum, system architecture of the present invention is simple, compact, and floor space is little, and heat recovery efficiency is high, can reach 60%-70%, be applicable to various different brands respective model exhaust end base of oil injection threaded bolt air compressors 200, simultaneously, it is simple to operate, and temperature Real-Time Monitoring that can be to lubricant oil and circulating water by sensor technology, and carry out strict control and adjust, the power consumption of water pump reduced, efficient and the stability that has ensured equipment operation, has also reached energy-conservation object.
The above; it is only most preferred embodiment of the present invention; not the present invention is done to any pro forma restriction; any those of ordinary skill in the art; do not departing from technical solution of the present invention scope situation; utilize the method content of above-mentioned announcement to make many possible changes and modification to technical solution of the present invention, all belong to the scope of claims protection.

Claims (5)

1. a water-cooled oil injected screw waste heat recovery system of air compressor, is characterized in that: the oil temperature control system that comprise a heat exchanger, connects described heat exchanger with constant temperature water system, be connected the oil cooler of described oil temperature control system and the cooling water control system being connected with this oil cooler; Described oil temperature control system comprises oil temperature sensor, three-way control valve, the oil-temperature control device being connected with modulating valve with described oil temperature sensor; The temperature of the lubricant oil that described oil temperature sensor Real-Time Monitoring automatic heat-exchanger is discharged, and temperature data is fed back to described oil-temperature control device, described oil-temperature control device regulates and controls described three-way control valve according to this temperature data.
2. water-cooled oil injected screw waste heat recovery system of air compressor according to claim 1, it is characterized in that: described heat exchanger is a heat exchanger, its both sides are connected with respectively transport pipe and conduit pipe, and described heat exchanger is provided with filler opening and the oil outlet that is positioned at a side and water intake and the water outlet that is positioned at opposite side; On described transport pipe and conduit pipe, be equipped with valve; Described transport pipe comprises the oil inlet pipe that connects filler opening and the oil outlet tube that connects oil outlet, and described conduit pipe comprises and connects the intake pipe of water intake and the outlet pipe of connection water outlet.
3. water-cooled oil injected screw waste heat recovery system of air compressor according to claim 2, is characterized in that: described three-way control valve is electric three-way ratio adjusting valve, and it has two input ports and an output port; In described two input ports, an input port accesses described oil outlet tube, and another input port is connected on described oil inlet pipe by pipeline.
4. water-cooled oil injected screw waste heat recovery system of air compressor according to claim 3, is characterized in that: described constant temperature water system comprises cooling-water temperature sensor, recycle pump and water temperature control device; Described cooling-water temperature sensor is installed on described outlet pipe, and described recycle pump is installed on described intake pipe; On pipeline between described recycle pump and heat exchanger water intake, also access a branch line, the other end of this branch line is connected on described outlet pipe.
5. water-cooled oil injected screw waste heat recovery system of air compressor according to claim 4, it is characterized in that: the temperature of the water that described cooling-water temperature sensor Real-Time Monitoring automatic heat-exchanger is discharged, and temperature data is fed back to described water temperature control device, described water temperature control device regulates the working state of controlling described recycle pump according to this temperature data.
CN201410039408.XA 2014-01-27 2014-01-27 Waste heat recovery Active CN103742416B (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104500401A (en) * 2014-12-18 2015-04-08 大同煤矿集团有限责任公司 Air-water two-path spraying and dust-falling system for preventing freezing by utilizing waste heat of air compressor
CN105444588A (en) * 2015-12-19 2016-03-30 黄华杰 Direct-heating waste heat recovery system of centrifugal type and oil-free screw type compressors
CN106286227A (en) * 2016-09-05 2017-01-04 广东志高暖通设备股份有限公司 A kind of compressor and oil temperature control method thereof and device
CN106704195A (en) * 2015-07-24 2017-05-24 池州汉诺威机电设备科技有限公司 Screw air compressor waste heat recovery device
EP3315780B1 (en) 2016-10-28 2018-12-26 ALMiG Kompressoren GmbH Oil-injected screw air compressor
CN113266571A (en) * 2021-05-10 2021-08-17 广东葆德科技有限公司 Compressor engine oil viscosity control system and control method
CN116816640A (en) * 2023-06-29 2023-09-29 广东立开机电设备工程有限公司 Waste heat recycling structure of air compressor

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CN201401311Y (en) * 2009-04-25 2010-02-10 赵德文 Waste heat recovery device of oil injection rotary air compressor
CN202301048U (en) * 2011-09-20 2012-07-04 林州市林丰铝电有限责任公司 Compressor circulation system
CN102691697A (en) * 2012-06-12 2012-09-26 西安飞机工业(集团)有限责任公司 Hydraulic oil cooling system
CN202579188U (en) * 2012-03-30 2012-12-05 东莞市雅迪勤压缩机制造有限公司 Oil-spraying screw air compressor capable of recovering excess heat

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US4271679A (en) * 1978-07-03 1981-06-09 Schaefer Otmar U Heating installation
US5906104A (en) * 1997-09-30 1999-05-25 Schwartz; Jay H. Combination air conditioning system and water heater
CN1671573A (en) * 2002-02-25 2005-09-21 奥特菲特能源公司 Waste heat solar energy system
CN201297253Y (en) * 2008-10-23 2009-08-26 上海英格索兰压缩机有限公司 Heat recovery system of water-cooled air compressor
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104500401A (en) * 2014-12-18 2015-04-08 大同煤矿集团有限责任公司 Air-water two-path spraying and dust-falling system for preventing freezing by utilizing waste heat of air compressor
CN106704195A (en) * 2015-07-24 2017-05-24 池州汉诺威机电设备科技有限公司 Screw air compressor waste heat recovery device
CN105444588A (en) * 2015-12-19 2016-03-30 黄华杰 Direct-heating waste heat recovery system of centrifugal type and oil-free screw type compressors
CN106286227A (en) * 2016-09-05 2017-01-04 广东志高暖通设备股份有限公司 A kind of compressor and oil temperature control method thereof and device
CN106286227B (en) * 2016-09-05 2018-06-26 广东志高暖通设备股份有限公司 A kind of compressor and its oil temperature control method and device
EP3315780B1 (en) 2016-10-28 2018-12-26 ALMiG Kompressoren GmbH Oil-injected screw air compressor
CN113266571A (en) * 2021-05-10 2021-08-17 广东葆德科技有限公司 Compressor engine oil viscosity control system and control method
CN116816640A (en) * 2023-06-29 2023-09-29 广东立开机电设备工程有限公司 Waste heat recycling structure of air compressor
CN116816640B (en) * 2023-06-29 2023-12-12 广东立开机电设备工程有限公司 Waste heat recycling structure of air compressor

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Address after: Building 201, Building A, 11, 128 Xiangyin Road, Yangpu District, Shanghai, 200127

Patentee after: Shanghai Rui Chen environmental protection Polytron Technologies Inc

Address before: Building 201, Building A, 11, 128 Xiangyin Road, Yangpu District, Shanghai, 200127

Patentee before: Shanghai Richen Environmental Technology Co., Ltd.