CN104564195A - Comprehensive waste heat utilization system of internal combustion engine - Google Patents
Comprehensive waste heat utilization system of internal combustion engine Download PDFInfo
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- CN104564195A CN104564195A CN201510036945.3A CN201510036945A CN104564195A CN 104564195 A CN104564195 A CN 104564195A CN 201510036945 A CN201510036945 A CN 201510036945A CN 104564195 A CN104564195 A CN 104564195A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The invention provides a comprehensive waste heat utilization system of an internal combustion engine. The system comprises an organic working medium pump, a first heat exchanger, a second heat exchanger, an expansion machine, a third heat exchanger, a generator, a water inlet pipe, a water outlet pipe, a cooling water pump, a first stop valve, a first cooling tower, a second stop valve, a heat exchange pipeline, a flue gas waste-heat heat exchanger, and a fluid circulating pipeline. Waste heat of cooling water of the internal combustion engine is used for preheating an organic working medium, then waste heat of flue gas emitted by the internal combustion engine is used for reheating the organic working medium, and the organic working medium is enabled to evaporate to overheating gaseous organic working medium under pressure for driving the expansion machine to act. Based on Rankine cycle of the organic working medium, waste heat of the cooling water and flue gas of the internal combustion engine is recovered with the same set of organic working medium Rankine cycle loop, waste heat energy of the internal combustion engine is recovered comprehensively, the waste heat of the internal combustion engine is used for power generation to the uttermost degree, and waste heat of surplus cooling water can be used for heating or refrigerating in factories.
Description
Technical field
The present invention relates to afterheat of IC engine and utilize field, particularly relate to a kind of afterheat of IC engine utilization system.
Background technique
Oil-electric engine group is widely used in engineering reality due to its Miniaturizable, lighting.But the actual power efficiency of oil-electric engine group is about 40%, a large amount of heat is had outwardly to scatter and disappear in the mode of fume emission and cooling water circulation.Because separate unit power of IC engine lower grade, present stage the waste heat of internal-combustion engine be used for heat supply or refrigeration.Also partial solution is had to be put together by the waste heat of multiple stage internal-combustion engine in order to generating.
Internal-combustion engine fume afterheat temperature is higher, if directly in order to a large amount of high-quality energy of heat supply or refrigeration losses, simultaneously in some occasions also without heat demand or cold demand.Generating can solve the Utilizing question of waste heat energy, but needs multiple stage afterheat of IC engine jointly to utilize could to solve the little problem of separate unit afterheat of IC engine amount.
Along with the development of energy-conserving and emission-cutting technology, there is the pattern proposing to adopt organic rankie cycle to generate electricity present stage to utilize separate unit afterheat of IC engine.Namely fume afterheat and cooling water heat all adopt independently a set of organic rankie cycle unit, to realize comprehensively recyling of waste heat energy.But cooling water heat temperature is lower, the organic rankie cycle unit operation Economy based on cooling water heat is poor, utilization how not yet in effect in engineering reality.
Summary of the invention
In view of Problems existing in background technique, the object of the present invention is to provide a kind of afterheat of IC engine utilization system, it can comprehensively recyle the waste heat energy of internal-combustion engine.
To achieve these goals, the invention provides a kind of afterheat of IC engine utilization system, it comprises: organic working medium pump, is communicated with outside organic working medium liquid container; First Heat Exchanger, is arranged on the downstream of organic working medium pump and is communicated with organic working medium pump; Second heat exchanger, is arranged on the downstream of First Heat Exchanger and is communicated with First Heat Exchanger; Decompressor, is arranged on the downstream of the second heat exchanger and is communicated with the second heat exchanger; 3rd heat exchanger, is arranged on the downstream of decompressor and is communicated with decompressor and is communicated with described organic working medium liquid container; Generator, connects decompressor and connects outside power supply or energy storage device; Intake pipe, is communicated in the water intake of internal-combustion engine; Outlet pipe, one end is communicated in the water outlet of internal-combustion engine, and water intake and water outlet are via the channel connection in internal-combustion engine; Cooling waterpump, one end is communicated with outlet pipe, is exported by the cooling water reclaiming combustion in IC engine liberated heat in internal-combustion engine and enters outlet pipe; First stop valve, has import and outlet, and inlet communication is in the other end of cooling waterpump; First cooling tower, is arranged on the downstream of the first stop valve and is communicated with the outlet of the first stop valve, and being communicated with the intake pipe of internal-combustion engine; Second stop valve, has import and outlet, inlet communication in stop valve import and be communicated in the described the other end of cooling waterpump; Heat exchanging pipe, one end be communicated in the outlet of the second stop valve and the other end be communicated in internal-combustion engine intake pipe and through First Heat Exchanger; Fume waste heat exchange device, controlled connection internal-combustion engine and inside contain fluid and have fluid inlet port and fluid discharge outlet, receive the flue gas of engine exhaust and the flue gas of the fluid of fume waste heat exchange device inside and reception carries out heat exchange, make the heat of described absorption of fluids flue gas, and make flue gas cool-down; Fume emission pipeline, is communicated with fume waste heat exchange device, receives the flue gas of the cooling that fume waste heat exchange device exports, and is discharged by the flue gas of cooling; Fluid circulating line, one end be communicated with the fluid discharge outlet of fume waste heat exchange device and the other end be communicated in fume waste heat exchange device fluid inlet port and through the second heat exchanger.Wherein: the passage in the water intake of the import of the water outlet of internal-combustion engine, outlet pipe, cooling waterpump, the first stop valve, the outlet of the first stop valve, the first cooling tower, intake pipe, internal-combustion engine and internal-combustion engine forms first loop of cooling water circulation, passage in the water intake of the import of the water outlet of internal-combustion engine, outlet pipe, cooling waterpump, the second stop valve, the outlet of the second stop valve, heat exchanging pipe, First Heat Exchanger, intake pipe, internal-combustion engine and internal-combustion engine forms second loop of cooling water circulation, organic working medium liquid container, organic working medium pump, First Heat Exchanger, the second heat exchanger, decompressor and the 3rd heat exchanger form organic working medium Rankine cycle circuit, fume waste heat exchange device, fluid circulating line and the second heat exchanger form fluid circulation loop, when the outlet of the import of the first stop valve and the first stop valve, first loop works of cooling water circulation, the cooling water flow reclaiming the heat of internal-combustion engine of discharging from the water outlet of internal-combustion engine is through outlet pipe, the import of the first stop valve, the outlet of the first stop valve, first cooling tower, intake pipe, passage in the water intake of internal-combustion engine and internal-combustion engine, to carry out cooling water recuperated cycle, wherein, first cooling tower receives the cooling water reclaiming combustion in IC engine liberated heat of cooling waterpump output and makes this cooling water carry out heat exchange with the extraneous air be passed in the first cooling tower, reclaim the cooling water heat release of combustion in IC engine liberated heat and lowered the temperature, when the outlet of the import of the second stop valve and the second stop valve, second loop of cooling water circulation, organic rankie cycle loop and fluid circulation loop work, the cooling water flow reclaiming the heat of internal-combustion engine of discharging from the water outlet of internal-combustion engine is through outlet pipe, the import of the second stop valve, the outlet of the second stop valve, heat exchanging pipe and enter First Heat Exchanger, liquid organic working medium in organic working medium liquid container exports by organic working medium pump, the liquid organic working medium that organic working medium pump exports enters First Heat Exchanger, the cooling water reclaiming the heat of internal-combustion engine and the liquid organic working medium that enter First Heat Exchanger carry out heat exchange, liquid organic working medium absorbs the heat of cooling water and pre-heating temperature elevation, and cooling water heat release and lowering the temperature, the cooling water of cooling is via heat exchanging pipe, intake pipe and enter the water intake of internal-combustion engine, the liquid organic working medium of pre-heating temperature elevation flows out into the second heat exchanger from First Heat Exchanger, the fluid of the heat of the absorption flue gas in fume waste heat exchange device enters the second heat exchanger via fluid discharge outlet and fluid circulating line, the fluid entering the heat of the absorption flue gas of the second heat exchanger carries out heat exchange with the liquid organic working medium of the pre-heating temperature elevation through entering the second heat exchanger, the heat of the liquid organic working medium absorption fluids of pre-heating temperature elevation is also evaporated to overheated gaseous state organic working medium with pressure, and fluid heat release cooling, the fluid of lowering the temperature enters in fume waste heat exchange device via the fluid inlet port of fluid circulating line and fume waste heat exchange device, overheated gaseous state organic working medium with pressure enters decompressor and drives decompressor to do work, decompressor does work and drives the electrical power generators be connected with decompressor, generator power supply externally or energy storage device provide sent electricity, weary gas after acting escapes and enter the 3rd heat exchanger from decompressor, at the 3rd heat exchanger, weary gas is cooled to liquid organic working medium by heat exchange, liquid organic working medium is recovered to organic working medium liquid container afterwards.
Beneficial effect of the present invention is as follows:
Afterheat of IC engine utilization system of the present invention adopts the waste heat of the cooling water of internal-combustion engine to preheat organic working medium, and then with the waste heat of the flue gas of engine exhaust, organic working medium is heated again, make organic working medium be evaporated to overheated gaseous state organic working medium with pressure and drive decompressor acting.The present invention is based on organic rankie cycle, and only adopt same set of organic rankie cycle loop to the waste heat of the waste heat and flue gas that reclaim the cooling water of internal-combustion engine, comprehensively recyle the waste heat energy of internal-combustion engine.
Afterheat of IC engine utilization system performance driving economy of the present invention is good, the waste heat of internal-combustion engine can be made to be used for generating to greatest extent, and the waste heat of cooling water more than needed in addition can also in order to plant area's heat supply or refrigeration, and, power generation system and heat supply or refrigeration system are independent of each other, can independent operating.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the embodiment according to afterheat of IC engine utilization system of the present invention;
Fig. 2 is the schematic diagram of another embodiment according to afterheat of IC engine utilization system of the present invention.
Wherein, description of reference numerals is as follows:
10 organic working medium pump 222 fluid discharge outlets
11 First Heat Exchanger 23 fume emission pipelines
12 second heat exchanger 24 fluid circulating lines
13 decompressor 25 coolant pumps
14 the 3rd heat exchanger 26 heat transferring medium pipelines
15 generator 27 second cooling towers
16 intake pipe 28 flues
17 outlet pipe 29A the 3rd stop valves
18 cooling waterpump 291A imports
19A first stop valve 292A exports
191A import 29B the 4th stop valve
192A exports 291B import
19B second stop valve 292B exports
191B import 30 organic Rankine bottoming cycle bypass circulation
192B exports 31 electric valves
20 first cooling tower 32 internal-combustion engines
21 heat exchanging pipe 321 water intakes
22 fume waste heat exchange device 322 water outlets
221 fluid inlet port 33 controllers
Embodiment
Describe in detail with reference to the accompanying drawings according to afterheat of IC engine utilization system of the present invention.
See figures.1.and.2, afterheat of IC engine utilization system according to the present invention comprises: organic working medium pump 10, is communicated with outside organic working medium liquid container (not shown); First Heat Exchanger 11, is arranged on the downstream of organic working medium pump 10 and is communicated with organic working medium pump 10; Second heat exchanger 12, is arranged on the downstream of First Heat Exchanger 11 and is communicated with First Heat Exchanger 11; Decompressor 13, is arranged on the downstream of the second heat exchanger 12 and is communicated with the second heat exchanger 12; 3rd heat exchanger 14, is arranged on the downstream of decompressor 13 and is communicated with decompressor 13 and is communicated with described organic working medium liquid container; Generator 15, connects (such as direct-connected) decompressor 13 and connects outside power supply or energy storage device (not shown); Intake pipe 16, is communicated in the water intake 321 of internal-combustion engine 32; Outlet pipe 17, one end is communicated in the water outlet 322 of internal-combustion engine 32, and water intake 321 and water outlet 322 are via the channel connection in internal-combustion engine 32; Cooling waterpump 18, one end be communicated with outlet pipe 17, by internal-combustion engine 32 reclaim internal-combustion engine 32 burn liberated heat cooling water export enter outlet pipe 17; First stop valve 19A, have import 191A and outlet 192A, import 191A is communicated in the other end of cooling waterpump 18; First cooling tower 20, is arranged on the downstream of the first stop valve 19A and is communicated with the outlet 192A of the first stop valve 19A, and being communicated with the intake pipe 16 of internal-combustion engine 32; Second stop valve 19B, has import 191B and outlet 192B, import 191B are communicated in the import 191A of stop valve 19A and are communicated in the described the other end of cooling waterpump 18; Heat exchanging pipe 21, one end be communicated in the outlet 192B of the second stop valve 19B and the other end be communicated in internal-combustion engine 32 intake pipe 16 and through First Heat Exchanger 11; Fume waste heat exchange device 22, controlled connection internal-combustion engine 32 and inside contain fluid and have fluid inlet port 221 and fluid discharge outlet 222, receive internal-combustion engine 32 discharge flue gas and the fluid of fume waste heat exchange device 22 inside and the flue gas of reception carry out heat exchange, make the heat of described absorption of fluids flue gas, and make flue gas cool-down; Fume emission pipeline 23, is communicated with fume waste heat exchange device 22, receives the flue gas of the cooling that fume waste heat exchange device 22 exports, and is discharged by the flue gas of cooling; Fluid circulating line 24, one end be communicated with the fluid discharge outlet 222 of fume waste heat exchange device 22 and the other end be communicated in fume waste heat exchange device 22 fluid inlet port 221 and through the second heat exchanger 12.Wherein: the passage in the water intake 321 of the import 191A of the water outlet 322 of internal-combustion engine 32, outlet pipe 17, cooling waterpump 18, first stop valve 19A, the outlet 192A of the first stop valve 19A, the first cooling tower 20, intake pipe 16, internal-combustion engine 32 and internal-combustion engine 32 forms first loop of cooling water circulation, passage in the water intake 321 of the import 191B of the water outlet 322 of internal-combustion engine 32, outlet pipe 17, cooling waterpump 18, second stop valve 19B, the outlet 192B of the second stop valve 19B, heat exchanging pipe 21, First Heat Exchanger 11, intake pipe 16, internal-combustion engine 32 and internal-combustion engine 32 forms second loop of cooling water circulation, organic working medium liquid container, organic working medium pump 10, First Heat Exchanger 11, second heat exchanger 12, decompressor 13 and the 3rd heat exchanger 14 form organic working medium Rankine cycle circuit, fume waste heat exchange device 22, fluid circulating line 24 and the second heat exchanger 12 form fluid circulation loop, when the import 191A of the first stop valve 19A is communicated with the outlet 192A of the first stop valve 19A, first loop works of cooling water circulation, the cooling water flow reclaiming the heat of internal-combustion engine 32 of discharging from the water outlet 322 of internal-combustion engine 32 is through outlet pipe 17, the import 191A of the first stop valve 19A, the outlet 192A of the first stop valve 19A, first cooling tower 20, intake pipe 16, passage in the water intake 321 of internal-combustion engine 32 and internal-combustion engine 32, to carry out cooling water recuperated cycle, wherein, the cooling water of what the first cooling tower 20 received that cooling waterpump 18 exports reclaim internal-combustion engine 32 burns liberated heat also makes this cooling water carry out heat exchange with the extraneous air be passed in the first cooling tower 20, reclaimed internal-combustion engine 32 burn liberated heat cooling water heat release and lower the temperature, when the import 191B of the second stop valve 19B is communicated with the outlet 192B of the second stop valve 19B, second loop of cooling water circulation, organic rankie cycle loop and fluid circulation loop work, the cooling water flow reclaiming the heat of internal-combustion engine 32 of discharging from the water outlet 322 of internal-combustion engine 32 is through outlet pipe 17, the import 191B of the second stop valve 19B, the outlet 192B of the second stop valve 19B, heat exchanging pipe 21 and enter First Heat Exchanger 11, liquid organic working medium in organic working medium liquid container exports by organic working medium pump 10, the liquid organic working medium that organic working medium pump 10 exports enters First Heat Exchanger 11, the cooling water reclaiming the heat of internal-combustion engine 32 and the liquid organic working medium that enter First Heat Exchanger 11 carry out heat exchange, liquid organic working medium absorbs the heat of cooling water and pre-heating temperature elevation, and cooling water heat release and lowering the temperature, the cooling water of cooling is via heat exchanging pipe 21, intake pipe 16 and enter the water intake 321 of internal-combustion engine 32, the liquid organic working medium of pre-heating temperature elevation flows out into the second heat exchanger 12 from First Heat Exchanger 11, the fluid of the heat of the absorption flue gas in fume waste heat exchange device 22 enters the second heat exchanger 12 via fluid discharge outlet 222 and fluid circulating line 24, the fluid entering the heat of the absorption flue gas of the second heat exchanger 12 carries out heat exchange with the liquid organic working medium of the pre-heating temperature elevation through entering the second heat exchanger 12, the heat of the liquid organic working medium absorption fluids of pre-heating temperature elevation is also evaporated to overheated gaseous state organic working medium with pressure, and fluid heat release cooling, the fluid of lowering the temperature enters in fume waste heat exchange device 22 via the fluid inlet port 221 of fluid circulating line 24 and fume waste heat exchange device 22, overheated gaseous state organic working medium with pressure enters decompressor 13 and drives decompressor 13 to do work, decompressor 13 does work and drives the generator 15 be connected with decompressor 13 to generate electricity, generator 15 power supply externally or energy storage device provide sent electricity, weary gas after acting escapes and enter the 3rd heat exchanger 14 from decompressor 13, at the 3rd heat exchanger 14, weary gas is cooled to liquid organic working medium by heat exchange, liquid organic working medium is recovered to organic working medium liquid container afterwards.
Afterheat of IC engine utilization system of the present invention adopts the waste heat of the cooling water of internal-combustion engine 32 to preheat organic working medium, and then with the fluid of fume waste heat exchange device 22, organic working medium is heated again, make organic working medium be evaporated to overheated gaseous state organic working medium with pressure and drive decompressor 13 to do work.The present invention is based on organic rankie cycle, and only adopt same set of organic rankie cycle loop to the waste heat of the waste heat and flue gas that reclaim the cooling water of internal-combustion engine, comprehensively recyle the waste heat energy of internal-combustion engine.
Afterheat of IC engine utilization system performance driving economy of the present invention is good, the waste heat of internal-combustion engine can be made to be used for greatest extent generating electricity, in addition the waste heat of the cooling water of (after namely meeting generating) more than needed can also in order to plant area's heat supply or refrigeration, and, power generation system and heat supply or refrigeration system are independent of each other, can independent operating.
In an embodiment of afterheat of IC engine utilization system according to the present invention, see figures.1.and.2, described afterheat of IC engine utilization system also comprises: controller 33, for controlling described afterheat of IC engine utilization system (can control corresponding parts for described different embodiment below particularly).
In an embodiment of afterheat of IC engine utilization system according to the present invention, controller 33 can be PLC (programmable logic controller (PLC), Programmable Logic Controller) or DCS (distributed control system, Distributed Control System).
In an embodiment of afterheat of IC engine utilization system according to the present invention, see figures.1.and.2, described afterheat of IC engine utilization system also can comprise: controller 33, communication connection cooling waterpump 18, first stop valve 19A, the second stop valve 19B, the first cooling tower 20, organic working medium pump 10, First Heat Exchanger 11, second heat exchanger 12, decompressor 13, the 3rd heat exchanger 14 and fume waste heat exchange device 22.
In an embodiment of afterheat of IC engine utilization system according to the present invention, the import 191A of the first stop valve 19A can be communicated with outlet 192B with the import 191B of the second stop valve 19B with outlet 192A simultaneously.Now, first loop of cooling water circulation and second loop of cooling water circulation work simultaneously, the valve opening of the first stop valve 19A and the second stop valve 19B can be regulated by controller 33 respectively, thus regulate the flow of the cooling water in first loop of cooling water circulation and second loop of cooling water circulation respectively.
In an embodiment of afterheat of IC engine utilization system according to the present invention, with reference to Fig. 1, described afterheat of IC engine utilization system also can comprise: coolant pump 25, is arranged on the downstream of the 3rd heat exchanger 14 and is communicated with the 3rd heat exchanger 14, and heat transferring medium pipeline 26, be communicated with the first cooling tower 20, the 3rd heat exchanger 14 and coolant pump 25, wherein, coolant pump 25, first cooling tower 20, heat transferring medium pipeline 26, the 3rd heat exchanger 14 form cooling water subcycle loop, when the import 191B of the second stop valve 19B is communicated with the outlet 192B of the second stop valve 19B, weary gas after acting escapes and enter the 3rd heat exchanger 14 from decompressor 13, and the cooling water of the first cooling tower 20 enters the 3rd heat exchanger 14 via heat transferring medium pipeline 26 under the driving of coolant pump 25, in the 3rd heat exchanger 14, cooling water and weary gas carry out heat exchange, cooling water absorbs the heat of weary gas and heats up, weary gas heat release and lowering the temperature, be cooled to liquid organic working medium, liquid organic working medium is recovered to organic working medium liquid container afterwards, the cooling water heated up enters the first cooling tower 20 via coolant pump 25, first cooling tower 20 makes the cooling water of the intensification entered in it carry out heat exchange with the extraneous air passed into, cooling water heat release is lowered the temperature.In one embodiment, with reference to Fig. 1, described afterheat of IC engine utilization system also can comprise: controller 33, communication connection cooling waterpump 18, first stop valve 19, second stop valve 19B, the first cooling tower 20, organic working medium pump 10, First Heat Exchanger 11, second heat exchanger 12, decompressor 13, the 3rd heat exchanger 14, fume waste heat exchange device 22 and coolant pump 25.
In an embodiment of afterheat of IC engine utilization system according to the present invention, with reference to Fig. 2, described afterheat of IC engine utilization system also can comprise: coolant pump 25, is arranged on the downstream of the 3rd heat exchanger 14 and is communicated with the 3rd heat exchanger 14, second cooling tower 27, is arranged on the downstream of coolant pump 25 and is communicated with coolant pump 25, and heat transferring medium pipeline 26, one end is communicated with the second cooling tower 27 and the other end is communicated with the 3rd heat exchanger 14, wherein, coolant pump 25, second cooling tower 27, heat transferring medium pipeline 26, the 3rd heat exchanger 14 form independently cooling water circulation loop, when the import 191B of the second stop valve 19B is communicated with the outlet 192B of the second stop valve 19B, weary gas after acting escapes and enter the 3rd heat exchanger 14 from decompressor 13, and the cooling water in the second cooling tower 27 enters the 3rd heat exchanger 14 via heat transferring medium pipeline 26 under the driving of coolant pump 25, in the 3rd heat exchanger 14, cooling water and weary gas carry out heat exchange, cooling water absorbs the heat of weary gas and heats up, weary gas heat release and lowering the temperature, be cooled to liquid organic working medium, liquid organic working medium is recovered to organic working medium liquid container afterwards, the cooling water heated up enters the second cooling tower 27 via coolant pump 25, second cooling tower 27 makes the cooling water of the intensification entered in it carry out heat exchange with the extraneous air passed into, cooling water heat release is lowered the temperature.In one embodiment, with reference to Fig. 2, described afterheat of IC engine utilization system also can comprise: controller 33, communication connection cooling waterpump 18, first stop valve 19A, the second stop valve 19B, the first cooling tower 20, organic working medium pump 10, First Heat Exchanger 11, second heat exchanger 12, decompressor 13, the 3rd heat exchanger 14, fume waste heat exchange device 22, coolant pump 25 and the second cooling tower 27.
In an embodiment of afterheat of IC engine utilization system according to the present invention, with reference to 1 and Fig. 2, described afterheat of IC engine utilization system also can comprise: flue 28, is communicated with between fume waste heat exchange device 22 and internal-combustion engine 32, exports for the flue gas discharged by internal-combustion engine 32; 3rd stop valve 29A, is arranged at flue 28, and have import 291A and outlet 292A, import 291A connection internal-combustion engine 32, outlet 292A is communicated with fume waste heat exchange device 22; 4th stop valve 29B, has import 291B and outlet 292B, import 291B are communicated with the import 291A of the 3rd stop valve 29A and are communicated with internal-combustion engine 32, and outlet 292B is communicated in ambient atmosphere; When the import 291A of the 3rd stop valve 29A is communicated with the outlet 292A of the 3rd stop valve 29A, the flue gas that internal-combustion engine 32 discharges inputs to fume waste heat exchange device 22, when the import 291B of the 4th stop valve 29B is communicated with the outlet 292B of the 4th stop valve 29B, the fume emission that internal-combustion engine 32 discharges enters in air.When fume waste heat exchange device 22 do not work or emergency case make the waste heat of internal-combustion engine do not need reclaim or partially recycled time, the import 291B of the 4th stop valve 29B exports 292B with first of the 4th stop valve 29B and is communicated with, can be directly emptying with the flow regulating flue gas to enter fume waste heat exchange device 22 by partial fume, guarantee normal work and the safety of internal-combustion engine and fume waste heat exchange device 22.In one embodiment, see figures.1.and.2, described afterheat of IC engine utilization system also comprises: controller 33, communication connection cooling waterpump 18, first stop valve 19A, the second stop valve 19B, the first cooling tower 20, organic working medium pump 10, First Heat Exchanger 11, second heat exchanger 12, decompressor 13, the 3rd heat exchanger 14, fume waste heat exchange device 22, the 3rd stop valve 29A and the 4th stop valve 29B.
In an embodiment of afterheat of IC engine utilization system according to the present invention, the import 291A of the 3rd stop valve 29A can be communicated with outlet 292B with the import 291B of the 4th stop valve 29B with outlet 292A simultaneously.Now, the partial fume that internal-combustion engine 32 discharges inputs to fume waste heat exchange device 22, another part fume emission that internal-combustion engine 32 discharges enters in air, the valve opening of the 3rd stop valve 29A and the 4th stop valve 29B can be regulated by controller 33 respectively, thus regulate the flow inputing to fume waste heat exchange device 22 and discharge the flue gas entered in air respectively.
In an embodiment of afterheat of IC engine utilization system according to the present invention, the fluid in fume waste heat exchange device 22 can be the one in water, conduction oil.
In an embodiment of afterheat of IC engine utilization system according to the present invention, with reference to 1 and Fig. 2, described afterheat of IC engine utilization system also can comprise: organic Rankine bottoming cycle bypass circulation 30, and one end is communicated in the upstream of decompressor 13 and the other end is communicated with in the downstream of decompressor 13 and the described the other end is communicated with the 3rd heat exchanger 14; And electric valve 31, be arranged at organic Rankine bottoming cycle bypass circulation 30, control the flow of organic Rankine bottoming cycle bypass circulation 30.The setting of organic Rankine bottoming cycle bypass circulation 30 and electric valve 31 can regulate the power stage of decompressor 13, thus controls the power stage of generator 15.Particularly, when the heat that organic working medium reclaims too much, generator 15 current do not need larger power stage or organic working medium parameter do not reach working state need idle running time, adjust valve opening by electric valve 31 and gaseous state organic working medium more than needed is carried out bypass by there being organic Rankine bottoming cycle bypass circulation 30, then direct cooling through the 3rd heat exchanger 14 is transported to organic working medium liquid container.In addition, when afterheat of IC engine utilization system of the present invention just starts, organic Rankine bottoming cycle bypass circulation 30 also plays pre-ringing, avoids decompressor 13 hydrops phenomenon and can extend the operating life of machine working medium Rankine cycle circuit.
Claims (10)
1. an afterheat of IC engine utilization system, is characterized in that, comprising:
Organic working medium pump (10), is communicated with outside organic working medium liquid container;
First Heat Exchanger (11), is arranged on the downstream of organic working medium pump (10) and is communicated with organic working medium pump (10);
Second heat exchanger (12), is arranged on the downstream of First Heat Exchanger (11) and is communicated with First Heat Exchanger (11);
Decompressor (13), is arranged on the downstream of the second heat exchanger (12) and is communicated with the second heat exchanger (12);
3rd heat exchanger (14), is arranged on the downstream of decompressor (13) and is communicated with decompressor (13) and is communicated with described organic working medium liquid container;
Generator (15), connects decompressor (13) and connects outside power supply or energy storage device;
Intake pipe (16), is communicated in the water intake (321) of internal-combustion engine (32);
Outlet pipe (17), one end is communicated in the water outlet (322) of internal-combustion engine (32), and water intake (321) and water outlet (322) are via the channel connection in internal-combustion engine (32);
Cooling waterpump (18), one end is communicated with outlet pipe (17), is exported by the cooling water of the internal-combustion engine of recovery (32) the burning liberated heat in internal-combustion engine (32) and enters outlet pipe (17);
First stop valve (19A), have import (191A) and outlet (192A), import (191A) is communicated in the other end of cooling waterpump (18);
First cooling tower (20), be arranged on the downstream of the first stop valve (19A) and be communicated with the outlet (192A) of the first stop valve (19A), and being communicated with the intake pipe (16) of internal-combustion engine (32);
Second stop valve (19B), have import (191B) and outlet (192B), import (191B) is communicated in the import (191A) of stop valve (19A) and is communicated in the described the other end of cooling waterpump (18);
Heat exchanging pipe (21), one end be communicated in the outlet (192B) of the second stop valve (19B) and the other end be communicated in internal-combustion engine (32) intake pipe (16) and through First Heat Exchanger (11);
Fume waste heat exchange device (22), controlled connection internal-combustion engine (32) and inside contain fluid and have fluid inlet port (221) and fluid discharge outlet (222), receive internal-combustion engine (32) flue gas that discharges and the flue gas of the inner fluid of fume waste heat exchange device (22) and reception carries out heat exchange, make the heat of described absorption of fluids flue gas, and make flue gas cool-down;
Fume emission pipeline (23), is communicated with fume waste heat exchange device (22), receives the flue gas of the cooling that fume waste heat exchange device (22) exports, and is discharged by the flue gas of cooling;
Fluid circulating line (24), one end be communicated with fume waste heat exchange device (22) fluid discharge outlet (222) and the other end be communicated in fume waste heat exchange device (22) fluid inlet port (221) and through the second heat exchanger (12);
Wherein:
Passage in the water intake (321) of the import (191A) of the water outlet (322) of internal-combustion engine (32), outlet pipe (17), cooling waterpump (18), the first stop valve (19A), the outlet (192A) of the first stop valve (19A), the first cooling tower (20), intake pipe (16), internal-combustion engine (32) and internal-combustion engine (32) forms first loop of cooling water circulation;
Passage in the water intake (321) of the import (191B) of the water outlet (322) of internal-combustion engine (32), outlet pipe (17), cooling waterpump (18), the second stop valve (19B), the outlet (192B) of the second stop valve (19B), heat exchanging pipe (21), First Heat Exchanger (11), intake pipe (16), internal-combustion engine (32) and internal-combustion engine (32) forms second loop of cooling water circulation;
Organic working medium liquid container, organic working medium pump (10), First Heat Exchanger (11), the second heat exchanger (12), decompressor (13) and the 3rd heat exchanger (14) form organic working medium Rankine cycle circuit;
Fume waste heat exchange device (22), fluid circulating line (24) and the second heat exchanger (12) form fluid circulation loop;
When import (191A) and first of first stop valve (19A) of the first stop valve (19A) export (192A) be communicated with time, first loop works of cooling water circulation, the cooling water flow of the heat of the internal-combustion engine of recovery (32) of discharging from the water outlet (322) of internal-combustion engine (32) is through outlet pipe (17), the import (191A) of the first stop valve (19A), the outlet (192A) of the first stop valve (19A), first cooling tower (20), intake pipe (16), passage in the water intake (321) of internal-combustion engine (32) and internal-combustion engine (32), to carry out cooling water recuperated cycle, wherein, first cooling tower (20) receives the cooling water of the internal-combustion engine of recovery (32) the burning liberated heat that cooling waterpump (18) exports and the air that this cooling water and the external world are passed in the first cooling tower (20) carries out heat exchange, reclaim the cooling water heat release of internal-combustion engine (32) burning liberated heat and lowered the temperature,
When the import (191B) of the second stop valve (19B) is communicated with the outlet (192B) of the second stop valve (19B), second loop of cooling water circulation, organic rankie cycle loop and fluid circulation loop work, the cooling water flow of the heat of the internal-combustion engine of recovery (32) of discharging from the water outlet (322) of internal-combustion engine (32) is through outlet pipe (17), the import (191B) of the second stop valve (19B), the outlet (192B) of the second stop valve (19B), heat exchanging pipe (21) and enter First Heat Exchanger (11), liquid organic working medium in organic working medium liquid container exports by organic working medium pump (10), the liquid organic working medium that organic working medium pump (10) exports enters First Heat Exchanger (11), the cooling water and the liquid organic working medium that enter the heat of the internal-combustion engine of recovery (32) of First Heat Exchanger (11) carry out heat exchange, liquid organic working medium absorbs the heat of cooling water and pre-heating temperature elevation, and cooling water heat release and lowering the temperature, the cooling water of cooling is via heat exchanging pipe (21), intake pipe (16) and enter the water intake (321) of internal-combustion engine (32), the liquid organic working medium of pre-heating temperature elevation flows out into the second heat exchanger (12) from First Heat Exchanger (11), the fluid of the heat of the absorption flue gas in fume waste heat exchange device (22) enters the second heat exchanger (12) via fluid discharge outlet (222) and fluid circulating line (24), the fluid entering the heat of the absorption flue gas of the second heat exchanger (12) carries out heat exchange with the liquid organic working medium of the pre-heating temperature elevation through entering the second heat exchanger (12), the heat of the liquid organic working medium absorption fluids of pre-heating temperature elevation is also evaporated to overheated gaseous state organic working medium with pressure, and fluid heat release cooling, the fluid of lowering the temperature enters in fume waste heat exchange device (22) via the fluid inlet port (221) of fluid circulating line (24) and fume waste heat exchange device (22), overheated gaseous state organic working medium with pressure enters decompressor (13) and drives decompressor (13) to do work, decompressor (13) does work and drives the generator (15) be connected with decompressor (13) to generate electricity, generator (15) power supply externally or energy storage device provide sent electricity, weary gas after acting escapes and enter the 3rd heat exchanger (14) from decompressor (13), at the 3rd heat exchanger (14), weary gas is cooled to liquid organic working medium by heat exchange, liquid organic working medium is recovered to organic working medium liquid container afterwards.
2. afterheat of IC engine utilization system according to claim 1, is characterized in that, described afterheat of IC engine utilization system also comprises:
Coolant pump (25), is arranged on the downstream of the 3rd heat exchanger (14) and is communicated with the 3rd heat exchanger (14); And
Heat transferring medium pipeline (26), is communicated with the first cooling tower (20), the 3rd heat exchanger (14) and coolant pump (25);
Wherein, coolant pump (25), the first cooling tower (20), heat transferring medium pipeline (26), the 3rd heat exchanger (14) form cooling water subcycle loop;
When the import (191B) of the second stop valve (19B) is communicated with the outlet (192B) of the second stop valve (19B), weary gas after acting escapes and enter the 3rd heat exchanger (14) from decompressor (13), and the cooling water of the first cooling tower (20) enters the 3rd heat exchanger (14) via heat transferring medium pipeline (26) under the driving of coolant pump (25), in the 3rd heat exchanger (14), cooling water and weary gas carry out heat exchange, cooling water absorbs the heat of weary gas and heats up, weary gas heat release and lowering the temperature, be cooled to liquid organic working medium, liquid organic working medium is recovered to organic working medium liquid container afterwards, the cooling water heated up enters the first cooling tower (20) via coolant pump (25), first cooling tower (20) makes the cooling water of the intensification entered in it carry out heat exchange with the extraneous air passed into, cooling water heat release is lowered the temperature.
3. afterheat of IC engine utilization system according to claim 1, is characterized in that, described afterheat of IC engine utilization system also comprises:
Coolant pump (25), is arranged on the downstream of the 3rd heat exchanger (14) and is communicated with the 3rd heat exchanger (14);
Second cooling tower (27), is arranged on the downstream of coolant pump (25) and is communicated with coolant pump (25); And
Heat transferring medium pipeline (26), one end is communicated with the second cooling tower (27) and the other end is communicated with the 3rd heat exchanger (14);
Wherein, coolant pump (25), the second cooling tower (27), heat transferring medium pipeline (26), the 3rd heat exchanger (14) form independently cooling water circulation loop;
When the import (191B) of the second stop valve (19B) is communicated with the outlet (192B) of the second stop valve (19B), weary gas after acting escapes and enter the 3rd heat exchanger (14) from decompressor (13), and the cooling water in the second cooling tower (27) enters the 3rd heat exchanger (14) via heat transferring medium pipeline (26) under the driving of coolant pump (25), in the 3rd heat exchanger (14), cooling water and weary gas carry out heat exchange, cooling water absorbs the heat of weary gas and heats up, weary gas heat release and lowering the temperature, be cooled to liquid organic working medium, liquid organic working medium is recovered to organic working medium liquid container afterwards, the cooling water heated up enters the second cooling tower (27) via coolant pump (25), second cooling tower (27) makes the cooling water of the intensification entered in it carry out heat exchange with the extraneous air passed into, cooling water heat release is lowered the temperature.
4. afterheat of IC engine utilization system according to claim 1, is characterized in that, described afterheat of IC engine utilization system also comprises:
Flue (28), is communicated with between fume waste heat exchange device (22) and internal-combustion engine (32), exports for the flue gas discharged by internal-combustion engine (32);
3rd stop valve (29A), be arranged at flue (28), there is import (291A) and outlet (292A), import (291A) is communicated with internal-combustion engine (32), and outlet (292A) is communicated with fume waste heat exchange device (22); And
4th stop valve (29B), there is import (291B) and outlet (292B), import (291B) is communicated with the import (291A) of the 3rd stop valve (29A) and is communicated with internal-combustion engine (32), and outlet (292B) is communicated in ambient atmosphere;
When the import (291A) of the 3rd stop valve (29A) is communicated with the outlet (292A) of the 3rd stop valve (29A), the flue gas that internal-combustion engine (32) discharges inputs to fume waste heat exchange device (22), when the import (291B) of the 4th stop valve (29B) is communicated with the outlet (293B) of the 4th stop valve (29B), the fume emission that internal-combustion engine (32) discharges enters in air.
5. afterheat of IC engine utilization system according to claim 1, is characterized in that, the fluid in fume waste heat exchange device (22) is the one in water, conduction oil.
6. afterheat of IC engine utilization system according to claim 1, is characterized in that, described afterheat of IC engine utilization system also comprises:
Organic Rankine bottoming cycle bypass circulation (30), one end is communicated in the upstream of decompressor (13) and the other end is communicated with in the downstream of decompressor (13) and the described the other end is communicated with the 3rd heat exchanger (14); And
Electric valve (31), is arranged at organic Rankine bottoming cycle bypass circulation (30), controls the flow of organic Rankine bottoming cycle bypass circulation (30).
7. afterheat of IC engine utilization system according to claim 1, is characterized in that, described afterheat of IC engine utilization system also comprises:
Controller (33), for controlling described afterheat of IC engine utilization system.
8. afterheat of IC engine utilization system according to claim 7, is characterized in that, controller (33) is PLC or DCS.
9. afterheat of IC engine utilization system according to claim 1, is characterized in that,
The import (191A) of the first stop valve (19A) is communicated with outlet (192B) with the import (191B) of the second stop valve (19B) with outlet (192A) simultaneously.
10. afterheat of IC engine utilization system according to claim 4, is characterized in that,
The import (291A) of the 3rd stop valve (29A) is communicated with outlet (292B) with the import (291B) of the 4th stop valve (29B) with outlet (292A) simultaneously.
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