CN206513411U - Space backheat organic Rankine bottoming cycle complementary energy recovery system - Google Patents
Space backheat organic Rankine bottoming cycle complementary energy recovery system Download PDFInfo
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- CN206513411U CN206513411U CN201720219160.4U CN201720219160U CN206513411U CN 206513411 U CN206513411 U CN 206513411U CN 201720219160 U CN201720219160 U CN 201720219160U CN 206513411 U CN206513411 U CN 206513411U
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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 utility model is related to a kind of space backheat organic Rankine bottoming cycle complementary energy recovery system, is mainly made up of variable expansion than hot merit conversion subsystem, space backheat subsystem and control unit；The system introduce variable expansion than vane rotary expanders, the expansion ratio of vane rotary expanders is adjusted by expansion ratio regulator, the HTHP organic working medium under variable working condition state is set can fully to be expanded in vane rotary expanders, Maximum Power Output；The recovery to weary gas heat energy is realized by introducing space heat exchanger, the weary gas of vane rotary expanders discharge and the cold working medium of process the condenser abundant contact heat-exchanging in the regenerator of space, weary out of breath dodge is condensed and liquefied, and weary gas heat energy is at utmost reclaimed so as to realize；System architecture described in the utility model is simple, can largely lift the organic efficiency of Vehicular internal combustion engine complementary energy.
Description
Technical field
The utility model belongs to Vehicular internal combustion engine exhaust energy recovery technology field, and in particular to a kind of space backheat of exploitation
Organic Rankine bottoming cycle complementary energy recovery system.
Background technology
As fossil energy is constantly consumed, energy crisis is on the rise, and domestic and foreign scholars have been started with energy-efficient, low
For the purpose of pollution, using waste heat recovery recycling as the research boom of approach.The Vehicular internal combustion engine thermal efficiency is relatively low, wherein most heat
Amount is exhaled by modes such as vehicle exhaust, cooling water of internal combustion engine.And it is directed to the recycling of Vehicular internal combustion engine waste heat from tail gas
Research for energy-saving and emission-reduction, this worldwide great demand is significant.
Organic Rankine bottoming cycle is with its simple in construction, safe, technology maturation and for the low product such as Vehicular internal combustion engine tail gas
The advantages of matter energy recovery efficiency is higher turns into the primary study object of energy-saving field.
The HTHP discharged in traditional organic Rankine bottoming cycle from evaporator crosses hot working fluid can not be in expanding machine fully
Expansion, causes also there is substantial amounts of heat energy from the weary gas of organic working medium that expanding machine is discharged, the utilization to weary gas heat energy is more at this stage
The modes such as reheat vapor cycle, extraction cycle are embodied in, but these modes are all, using heat exchanger as main heat exchange mode, to reclaim weary gas heat
Can be less efficient.
The content of the invention
The purpose of this utility model is to provide a kind of space backheat organic Rankine bottoming cycle complementary energy recovery system, and the system is introduced
Variable expansion than vane rotary expanders, by expansion ratio regulator adjust vane rotary expanders expansion ratio make change
HTHP organic working medium under work condition state can fully expand in vane rotary expanders, Maximum Power Output；
The recovery to weary gas heat energy is realized by introducing space heat exchanger, weary gas and pass through condensation that vane rotary expanders are discharged
The cold working medium of device abundant contact heat-exchanging in the regenerator of space, weary out of breath dodge condenses and liquefied, so as to realize to weary gas heat energy most
Big degree is reclaimed；System architecture described in the utility model is simple, can largely lift the recovery of Vehicular internal combustion engine complementary energy
Efficiency.
The utility model is by control unit 28, variable expansion than hot merit conversion subsystem I, II group of space backheat subsystem
Into；Wherein, control unit 28 is connected with variable expansion than hot merit conversion subsystem I, space backheat subsystem II respectively；It is variable swollen
The swollen variable frequency pump 1 than in hot merit conversion subsystem I respectively with the pressure-regulating valve 13 in space backheat subsystem II, space backheat
Device 19 and working medium tank Outlet check valves 27 are connected；Variable expansion than the vane rotary expanders 8 in hot merit conversion subsystem I with
The weary gas blowout emitter 22 of space regenerator in space backheat subsystem II is connected.
Variable expansion is than hot merit conversion subsystem I by variable frequency pump 1, evaporator working medium flow control valve 2, temperature pressure sensing
Device I 3, evaporator 4, temperature and pressure transmitter II 5, vane rotary expanders working medium flow control valve 6, temperature and pressure transmitter
III 7, vane rotary expanders 8, expansion ratio regulator 9, the exhaust pipe of engine 10, combination sensor I 11, combination sensor II
12 compositions；Wherein, variable frequency pump 1, evaporator working medium flow control valve 2, evaporator 4, vane rotary expanders working medium flow control
Valve 6 processed, vane rotary expanders 8 are connected in series；The port of export of the exhaust pipe of engine 10 is connected with the gas inlet port of evaporator 4；
Expansion ratio regulator 9 is connected with vane rotary expanders 8；Temperature and pressure transmitter I 3, temperature and pressure transmitter II 5 are put respectively
In the working medium entrances end of evaporator 4 and the port of export；Temperature and pressure transmitter III 7 is placed in the working medium entrances end of vane rotary expanders 8；
Combination sensor I 11, combination sensor II 12 are respectively placed in the gas inlet port of evaporator 4 and the port of export；The arrival end of variable frequency pump 1
It is connected, becomes with the port of export of working medium tank Outlet check valves 27 and the port of export of space regenerator 19 in space backheat subsystem II respectively
The port of export of frequency pump 1 is connected with the arrival end of pressure-regulating valve 13 in space backheat subsystem II；Vane rotary expanders 8 are exported
End is connected with the weary arrival end of gas blowout emitter 22 of the space regenerator in space backheat subsystem II；Variable expansion is than heat to power output
System I is connected with control unit 28.
Space backheat subsystem II is passed by pressure-regulating valve 13, condenser 14, temperature and pressure transmitter IV 15, temperature, pressure
The cold working medium flow control valve 17 of sensor V 16, space regenerator, the cold working medium injector 18 of space regenerator, space regenerator 19,
The weary gas blowout emitter 22 of space regenerator liquid level sensor 20, temperature and pressure transmitter VI 21, space regenerator, temperature pressure sensing
Device VII 23, temperature and pressure transmitter VIII 24, working medium tank inflow control valve 25, working medium tank 26, working medium tank Outlet check valves 27
Composition；Wherein, the arrival end of pressure-regulating valve 13 connects with variable expansion than the port of export of variable frequency pump 1 in hot merit conversion subsystem I
Connect, the port of export of pressure-regulating valve 13 is connected with the working medium entrances end of condenser 14；The sender property outlet end of condenser 14 is divided into two-way, respectively
It is connected with the arrival end of working medium tank inflow control valve 25 and the cold arrival end of working medium flow control valve 17 of space regenerator；Working medium tank
Inflow control valve 25, working medium tank 26, working medium tank Outlet check valves 27 are connected in series；The port of export of working medium tank Outlet check valves 27
It is connected with variable expansion than the arrival end of variable frequency pump 1 in hot merit conversion subsystem I；The cold working medium flow control valve of space regenerator
17 ports of export are connected with the cold arrival end of working medium injector 18 of space regenerator；The cold port of export of working medium injector 18 of space regenerator and
The regenerator weary port of export of gas blowout emitter 22 in space is connected with space regenerator 19；The port of export of space regenerator 19 and variable expansion ratio
The arrival end of variable frequency pump 1 connection in heat to power output subsystem I；The weary arrival end of gas blowout emitter 22 of space regenerator and variable expansion ratio
The port of export of vane rotary expanders 8 connection in heat to power output subsystem I；Temperature and pressure transmitter IV 15 is placed in condenser 14
On；Temperature and pressure transmitter V 16 is placed in the cold arrival end of working medium flow control valve 17 of space regenerator；Space regenerator liquid level is passed
Sensor 20 and temperature and pressure transmitter VI 21 are placed on space regenerator 19；Temperature and pressure transmitter VII 23 is placed in space regenerator
The weary arrival end of gas blowout emitter 22；Temperature and pressure transmitter VIII 24 is placed in the port of export of space regenerator 19；Space backheat subsystem II
It is connected with control unit 28.
Principle of the present utility model is：The tail gas and organic working medium of engine emission are exchanged heat in evaporator, make to have
The superheated vapor of machine working medium formation HTHP, by adjusting the flow of organic working medium, to ensure that evaporator remains higher
Heat exchange efficiency, now superheated vapor be maintained at the optimal thermal source state needed for vane rotary expanders；The mistake of HTHP
Heat steam, which enters in vane rotary expanders, promotes blade acting, and vane rotary expanders are adjusted by expansion ratio regulator
Expansion ratio so that the superheated vapor under different operating mode can fully expand in vane rotary expanders, output is most
It is high-power；By the setting pressure for adjusting pressure-regulating valve, it is ensured that the supply to cold working medium in the regenerator of space；Space regenerator
Weary gas in weary gas blowout emitter penetrating space regenerator sprays into cold in the regenerator of space with the cold working medium injector of space regenerator
The abundant contact heat-exchanging of residual liquid working medium in working medium and space regenerator, weary out of breath dodge condenses and liquefied, and completes to weary gas heat
It can farthest reclaim, realize the high-effect of organic Rankine bottoming cycle；The organic work of high-temperature liquid state in the regenerator of space after backheat
Matter is used for variable expansion than hot merit conversion subsystem through variable frequency pump rear portion, and a part is used for space backheat subsystem, realizes
Circulation.
The course of work of the present utility model is：Control unit 28 measures the tail gas of evaporator 4 according to combination sensor II 12 and gone out
The temperature of mouth end tail gas, the temperature of the sender property outlet end working medium of evaporator 4 is determined by folder point temperature, according to combination sensor I 11, group
Close sensor II 12 and measure temperature, pressure and flow that the tail gas of evaporator 4 imports and exports tail gas, can with reference to the heat exchange efficiency of evaporator 4
To draw the heat exchange amount of organic working medium and motor exhaust in evaporator 4, evaporator 4 is measured by temperature and pressure transmitter I 3
Working medium entrances end Temperature of Working and pressure, temperature and pressure transmitter II 5 measure the sender property outlet end power pressure of evaporator 4, evaporation
The sender property outlet end Temperature of Working of device 4 is calculated by folder point temperature, it can thus be concluded that the working medium of evaporator 4 imports and exports the specific enthalpy of organic working medium
Difference, so that the working medium flow in 4 heat exchange efficiency highest of evaporator is drawn, by adjusting evaporator working medium flow control valve 3
Aperture changes the working medium flow passed through in evaporator 4, evaporator is remained at higher heat exchange efficiency, realizes to exhaust gas heat
Amount is farthest reclaimed.During start operating performance, motor exhaust temperature is relatively low, and variable frequency pump 1 extracts a small amount of work out from working medium tank 26
Matter is imported in evaporator 4, with the rise of motor exhaust temperature, the rotating speed of variable frequency pump 1 is altered in steps to increase working medium flow,
The normal work of organic Rankine bottoming cycle under steady working condition is done step-by-step.
The temperature and mass flow of the known arrival end superheated vapor of vane rotary expanders 8, control unit 28 is according to temperature
Degree pressure sensor III 7 measures the pressure of superheated vapor, by adjusting opening for vane rotary expanders working medium flow control valve 6
Degree makes organic working medium be maintained at constant pressure, to stablize the mapping of organic working medium.By the temperature of superheated vapor, pressure, matter
Flow is measured, the rotating speed for adjusting vane rotary expanders 8 according to nominal data is adapted the state of itself and superheated vapor, leads to
The expansion ratio that expansion ratio regulator 9 adjusts vane rotary expanders 8 is crossed, makes superheated vapor in vane rotary expanders 8
It can fully expand, make vane rotary expanders 8 being capable of Maximum Power Output under different conditions superheated vapor.
The setting pressure of pressure-regulating valve 13 is adjusted by control unit 28, it is set in pressure and organic Rankine bottoming cycle
Operating pressure be adapted, it is ensured that the supply of cold to space regenerator working medium, if being more than space by the cold working medium amount of condenser 14
The amount of cold working medium needed for regenerator 19, then unnecessary cold working medium pass through working medium tank inflow control valve 25 and enter working medium tank 26.
Weary gas after rotated vane type expanding machine 8 does work sprays into space regenerator by the weary gas blowout emitter 22 of space regenerator
19, control unit 28 measures cold working medium state according to temperature and pressure transmitter V 16, temperature and pressure transmitter VI 21 and space is returned
State in hot device, determines the amount of cold working medium needed for space regenerator 19, by the cold working medium injector 18 of space regenerator by cold work
Matter sprays into space regenerator 19, makes weary gas and cold working medium abundant contact heat-exchanging in space regenerator 19, weary sudden strain of a muscle out of breath condense and
Liquefaction, realizes the recovery to weary gas heat energy.Measured according to space regenerator liquid level sensor 20 in space regenerator 19 after backheat
The liquid level of organic working medium, by adjusting the setting pressure of pressure-regulating valve 13, changes the working medium flow in backheat loop, makes space
Liquid refrigerant in regenerator 19 remains at the organic work of high-temperature liquid state after backheat in reasonable liquid level, space regenerator 19
Matter is used for variable expansion than hot merit conversion subsystem I through the rear portion of variable frequency pump 1, and a part is used for space backheat subsystem II,
Realize circulation.
When engine is shut down, the end worked with organic Rankine bottoming cycle, the organic working medium in loop is passed through by variable frequency pump 1
Condenser 14, working medium tank inflow control valve 25 are imported in working medium tank 26.
The beneficial effects of the utility model are：Adjusted according to the heat exchange amount of motor exhaust and organic working medium in evaporator
Working medium flow, makes evaporator remain at higher heat exchange efficiency, it is ensured that discharge HTHP from evaporator sender property outlet end
Cross hot working fluid, now superheated vapor keep vane rotary expanders needed for optimal thermal source state.It is variable swollen by introducing
The vane rotary expanders of swollen ratio, can pass through expansion ratio according to the state of vane rotary expanders inlet superheat steam
Adjuster adjusts the expansion ratio of vane rotary expanders, and making the superheated vapor of different conditions can expand in orbiting vane
Fully expanded in machine, make vane rotary expanders Maximum Power Output.Space regenerator is introduced to realize to weary gas heat energy
Reclaim, the emitted dose of cold working medium in the regenerator of space sprayed into according to the Determines of the state in the regenerator of space and cold working medium,
Weary gas and returned by the cold working medium of condenser by the weary gas blowout emitter of space regenerator and space that vane rotary expanders are discharged
The hot cold working medium injector of device is sprayed into the regenerator of space, weary gas and the abundant contact heat-exchanging of cold working medium, and weary out of breath dodge condenses and liquefied,
So as to realize the recovery to weary gas heat energy, being introduced into space regenerator can solve that sky can not be realized in vane rotary expanders
Between the problem of condense, and can preferably reclaim by space regenerator the heat energy of weary gas.By adjusting pressure-regulating valve
Set pressure to adapt to the operating pressure of organic Rankine bottoming cycle, to ensure the supply to the cold working medium of space regenerator and keep backheat
Working medium liquid level is in reasonable liquid level afterwards.
Brief description of the drawings
Fig. 1 is the structural representation of space backheat organic Rankine bottoming cycle complementary energy recovery system；
Wherein：Variable expansion is than hot merit conversion subsystem I, space backheat subsystem II, variable frequency pump 1, evaporator working medium stream
Control valve 2, temperature and pressure transmitter I 3, evaporator 4, temperature and pressure transmitter II 5, vane rotary expanders working medium flow
Control valve 6, temperature and pressure transmitter III 7, vane rotary expanders 8, expansion ratio regulator 9, the exhaust pipe of engine 10, combination
Sensor I 11, combination sensor II 12, pressure-regulating valve 13, condenser 14, temperature and pressure transmitter IV 15, temperature, pressure are passed
The cold working medium flow control valve 17 of sensor V 16, space regenerator, the cold working medium injector 18 of space regenerator, space regenerator 19,
The weary gas blowout emitter 22 of space regenerator liquid level sensor 20, temperature and pressure transmitter VI 21, space regenerator, temperature pressure sensing
Device VII 23, temperature pressure sensing VIII 24, working medium tank inflow control valve 25, working medium tank 26, the and of working medium tank Outlet check valves 27
Control unit 28.
Embodiment
Technical solutions of the utility model are further elaborated below in conjunction with accompanying drawing 1：The utility model is single by control
Member 28, variable expansion are constituted than hot merit conversion subsystem I, space backheat subsystem II；Wherein, control unit 28 respectively with it is variable
Expansion ratio heat to power output subsystem I, space backheat subsystem II are connected；Variable expansion is than the frequency conversion in hot merit conversion subsystem I
Pump 1 connects with the pressure-regulating valve 13 in space backheat subsystem II, space regenerator 19 and working medium tank Outlet check valves 27 respectively
Connect；Variable expansion is returned than the space in the vane rotary expanders 8 in hot merit conversion subsystem I and space backheat subsystem II
The hot weary gas blowout emitter 22 of device is connected.
Variable expansion is than hot merit conversion subsystem I by variable frequency pump 1, evaporator working medium flow control valve 2, temperature pressure sensing
Device I 3, evaporator 4, temperature and pressure transmitter II 5, vane rotary expanders working medium flow control valve 6, temperature and pressure transmitter
III 7, vane rotary expanders 8, expansion ratio regulator 9, the exhaust pipe of engine 10, combination sensor I 11, combination sensor II
12 compositions；Wherein, variable frequency pump 1, evaporator working medium flow control valve 2, evaporator 4, vane rotary expanders working medium flow control
Valve 6 processed, vane rotary expanders 8 are connected in series；The port of export of the exhaust pipe of engine 10 is connected with the gas inlet port of evaporator 4；
Expansion ratio regulator (9) is connected with vane rotary expanders (8)；II 5 points of temperature and pressure transmitter I 3, temperature and pressure transmitter
The working medium entrances end of evaporator 4 and the port of export are not placed in；Temperature and pressure transmitter III 7 is placed in the working medium of vane rotary expanders 8 and entered
Mouth end；Combination sensor I 11, combination sensor II 12 are respectively placed in the gas inlet port of evaporator 4 and the port of export；Variable frequency pump 1 enters
Mouth end connects with the port of export of working medium tank Outlet check valves 27 in space backheat subsystem II and the port of export of space regenerator 19 respectively
Connect, the port of export of variable frequency pump 1 is connected with the arrival end of pressure-regulating valve 13 in space backheat subsystem II；Vane rotary expanders
8 ports of export are connected with the weary gas blowout emitter arrival end of the space regenerator in space backheat subsystem II；Variable expansion turns than hot merit
Subsystem I is changed to be connected with control unit 28.
Space backheat subsystem II is passed by pressure-regulating valve 13, condenser 14, temperature and pressure transmitter IV 15, temperature, pressure
The cold working medium flow control valve 17 of sensor V 16, space regenerator, the cold working medium injector 18 of space regenerator, space regenerator 19,
The weary gas blowout emitter 22 of space regenerator liquid level sensor 20, temperature and pressure transmitter VI 21, space regenerator, temperature pressure sensing
Device VII 23, temperature and pressure transmitter VIII 24, working medium tank inflow control valve 25, working medium tank 26, working medium tank Outlet check valves 27
Composition；Wherein, the arrival end of pressure-regulating valve 13 connects with variable expansion than the port of export of variable frequency pump 1 in hot merit conversion subsystem I
Connect, the port of export of pressure-regulating valve 13 is connected with the working medium entrances end of condenser 14；The sender property outlet end of condenser 14 is divided into two-way, respectively
It is connected with the arrival end of working medium tank inflow control valve 25 and the cold arrival end of working medium flow control valve 17 of space regenerator；Working medium tank
Inflow control valve 25, working medium tank 26, working medium tank Outlet check valves 27 are connected in series；The port of export of working medium tank Outlet check valves 27
It is connected with variable expansion than the arrival end of variable frequency pump 1 in hot merit conversion subsystem I；The cold working medium flow control valve of space regenerator
17 ports of export are connected with the cold arrival end of working medium injector 18 of space regenerator；The cold port of export of working medium injector 18 of space regenerator and
The regenerator weary port of export of gas blowout emitter 22 in space is connected with space regenerator 19；The port of export of space regenerator 19 and variable expansion ratio
The arrival end of variable frequency pump 1 connection in heat to power output subsystem I；The weary arrival end of gas blowout emitter 22 of space regenerator and variable expansion ratio
The port of export of vane rotary expanders 8 connection in heat to power output subsystem I；Temperature and pressure transmitter IV 15 is placed in condenser 14
On；Temperature and pressure transmitter V 16 is placed in the cold arrival end of working medium flow control valve 17 of space regenerator；Space regenerator liquid level is passed
Sensor 20 and temperature and pressure transmitter VI 21 are placed on space regenerator 19；Temperature and pressure transmitter VII 23 is placed in space regenerator
The weary arrival end of gas blowout emitter 22；Temperature and pressure transmitter VIII 24 is placed in the port of export of space regenerator 19；Space backheat subsystem II
It is connected with control unit 28.
The specific works mode of system is as follows：
First, the control of evaporator organic working medium flow：Control unit 28 measures the tail of evaporator 4 according to combination sensor II 12
The temperature of gas port of export tail gas, the temperature of the sender property outlet end working medium of evaporator 4 is determined by folder point temperature, according to combination sensor I
11st, combination sensor II 12 measures temperature, pressure and the flow that the tail gas of evaporator 4 imports and exports tail gas, exchanges heat and imitates with reference to evaporator 4
Rate can draw the heat exchange amount of organic working medium and motor exhaust in evaporator 4, and evaporation is measured by temperature and pressure transmitter I 3
The working medium entrances end Temperature of Working of device 4 and pressure, temperature and pressure transmitter II 5 measure the sender property outlet end power pressure of evaporator 4, steam
Hair device 4 sender property outlet end Temperature of Working is calculated by folder point temperature, it can thus be concluded that the working medium of evaporator 4 imports and exports the ratio of organic working medium
Enthalpy difference, so that the working medium flow in 4 heat exchange efficiency highest of evaporator is drawn, by adjusting evaporator working medium flow control valve 3
Aperture change the working medium flow passed through in evaporator 4, evaporator is remained at higher heat exchange efficiency, realize to tail gas
Heat is farthest reclaimed.During start operating performance, motor exhaust temperature is relatively low, and variable frequency pump 1 is extracted out on a small quantity from working medium tank 26
Working medium is imported in evaporator 4, with the rise of motor exhaust temperature, the rotating speed of variable frequency pump 1 is altered in steps to increase working medium stream
Amount, is done step-by-step the normal work of organic Rankine bottoming cycle under steady working condition.
2nd, the expansion ratio control of vane rotary expanders：The known arrival end superheated vapor of vane rotary expanders 8
Temperature and mass flow, control unit 28 measure the pressure of superheated vapor according to temperature and pressure transmitter III 7, are rotated by adjusting
The aperture of vane type expanding machine working medium flow control valve 6 makes organic working medium be maintained at constant pressure, to stablize the wink of organic working medium
State property energy.By the temperature of superheated vapor, pressure, mass flow, the rotating speed of vane rotary expanders 8 is adjusted according to nominal data
The state of itself and superheated vapor is adapted, the expansion ratio of vane rotary expanders 8 is adjusted by expansion ratio regulator 9, is made
Superheated vapor can fully expand in vane rotary expanders 8, vane rotary expanders 8 is overheated in different conditions and steams
Being capable of Maximum Power Output under gas.
3rd, the control of pressure-reducing valve：The setting pressure of pressure-regulating valve 13 is adjusted by control unit 28, it is set pressure
It is adapted with the operating pressure in organic Rankine bottoming cycle, it is ensured that working medium supply cold to space regenerator, if by condenser 14
Cold working medium amount is more than the amount of cold working medium needed for space regenerator 19, then unnecessary cold working medium passes through working medium tank inflow control valve
25 enter working medium tank 26.
4th, space backheat：Weary gas after rotated vane type expanding machine 8 does work is sprayed by the weary gas blowout emitter 22 of space regenerator
Enter space regenerator 19, control unit 28 measures cold working medium according to temperature and pressure transmitter V 16, temperature and pressure transmitter VI 21
State in state and space regenerator, determines the amount of cold working medium needed for space regenerator 19, is sprayed by the cold working medium of space regenerator
Cold working medium is sprayed into space regenerator 19 by emitter 18, makes weary gas and cold working medium abundant contact heat-exchanging in space regenerator 19, weary
It is out of breath to dodge condensation and liquefy, realize the recovery to weary gas heat energy.Space backheat is measured according to space regenerator liquid level sensor 20
In device 19 after backheat organic working medium liquid level, by adjusting the setting pressure of pressure-regulating valve 13, change the work in backheat loop
Mass flow amount, makes the liquid refrigerant in space regenerator 19 remain at the height in reasonable liquid level, space regenerator 19 after backheat
Warm liquid organic working medium is used for variable expansion than hot merit conversion subsystem I through the rear portion of variable frequency pump 1, and a part is returned for space
Thermal sub-system II, realizes circulation.
5th, engine is shut down：When engine is shut down, the end worked with organic Rankine bottoming cycle is organic in loop
Working medium is returned in working medium tank 26 by the condensed device 14 of variable frequency pump 1, working medium tank inflow control valve 25.
In the utility model changing for organic working medium and the low-quality energy is realized using heat exchanger (evaporator 4, condenser 14)
Heat and organic working medium cooling, by this principle in actual applications shell-and-tube heat exchanger, plate type heat exchanger, tube-sheet heat exchanger and
This kind of function can be achieved in double pipe heat exchanger etc.；The superheated vapor of the utility model high temperature high pressure expands in expanding machine to be done
Work(, by this principle, turbine type expanding machine, piston-type expanding machine can realize this kind of function in actual applications；The utility model
The middle organic working medium relatively low by the use of boiling point can just be heated to be overheat as cycle fluid, in lower pressure, lower temperature and steam
Gas, by this principle mark in actual applications the relatively low working medium of boiling point under condition (such as R245fa, R123, R143a, R152a, R141b and
R245ca etc.) this kind of function can be achieved；Utilization space regenerator is realized that hot and cold working medium is fully contacted and changed in the utility model
Heat, the closed container for meeting use condition in actual applications by this principle can realize this kind of function.
Claims (3)
1. a kind of space backheat organic Rankine bottoming cycle complementary energy recovery system, it is characterised in that：It is main by control unit (28), it is variable
Expansion ratio heat to power output subsystem (I), space backheat subsystem (II) composition；Wherein, control unit (28) respectively with it is variable swollen
It is swollen to be connected than hot merit conversion subsystem (I), space backheat subsystem (II)；Variable expansion is than in hot merit conversion subsystem (I)
Variable frequency pump (1) goes out with the pressure-regulating valve (13) in space backheat subsystem (II), space regenerator (19) and working medium tank respectively
Mouth check valve (27) connection；Variable expansion is than the vane rotary expanders (8) in hot merit conversion subsystem (I) and space backheat
Weary gas blowout emitter (22) connection of space regenerator in subsystem (II).
2. space backheat organic Rankine bottoming cycle complementary energy recovery system according to claim 1, it is characterised in that variable expansion
Than hot merit conversion subsystem (I) by variable frequency pump (1), evaporator working medium flow control valve (2), temperature and pressure transmitter I (3), steaming
Send out device (4), temperature and pressure transmitter II (5), vane rotary expanders working medium flow control valve (6), temperature and pressure transmitter
III (7), vane rotary expanders (8), expansion ratio regulator (9), the exhaust pipe of engine (10), combination sensor I (11), group
Close sensor II (12) composition；Wherein, variable frequency pump (1), evaporator working medium flow control valve (2), evaporator (4), rotating vane
Formula expanding machine working medium flow control valve (6), vane rotary expanders (8) are connected in series；The exhaust pipe of engine (10) port of export
It is connected with evaporator (4) gas inlet port；Expansion ratio regulator (9) is connected with vane rotary expanders (8)；Temperature, pressure is passed
Sensor I (3), temperature and pressure transmitter II (5) are respectively placed in evaporator (4) working medium entrances end and the port of export；Temperature pressure sensing
Device III (7) is placed in vane rotary expanders (8) working medium entrances end；Combination sensor I (11), combination sensor II (12) are respectively
It is placed in evaporator (4) gas inlet port and the port of export；Variable frequency pump (1) arrival end respectively with the work in space backheat subsystem (II)
Matter tank Outlet check valves (27) port of export and the connection of space regenerator (19) port of export, variable frequency pump (1) port of export and space backheat
Pressure-regulating valve (13) arrival end connection in subsystem (II)；Vane rotary expanders (8) port of export and space backheat
Weary gas blowout emitter (22) the arrival end connection of space regenerator in system (II)；Variable expansion than hot merit conversion subsystem (I) with
Control unit (28) is connected.
3. space backheat organic Rankine bottoming cycle complementary energy recovery system according to claim 1, it is characterised in that space backheat
Subsystem (II) is by pressure-regulating valve (13), condenser (14), temperature and pressure transmitter IV (15), temperature and pressure transmitter V
(16), the cold working medium flow control valve (17) of space regenerator, the cold working medium injector (18) of space regenerator, space regenerator
(19), the weary gas blowout emitter (22) of space regenerator liquid level sensor (20), temperature and pressure transmitter VI (21), space regenerator,
Temperature and pressure transmitter VII (23), temperature and pressure transmitter VIII (24), working medium tank inflow control valve (25), working medium tank
(26), working medium tank Outlet check valves (27) are constituted；Wherein, pressure-regulating valve (13) arrival end and variable expansion are more sub than heat to power output
Variable frequency pump (1) port of export connection in system (I), pressure-regulating valve (13) port of export connects with condenser (14) working medium entrances end
Connect；Condenser (14) sender property outlet end is divided into two-way, is returned respectively with working medium tank inflow control valve (25) arrival end and space
Hot cold working medium flow control valve (17) the arrival end connection of device；Working medium tank inflow control valve (25), working medium tank (26), working medium tank
Outlet check valves (27) are connected in series；Working medium tank Outlet check valves (27) port of export is with variable expansion than hot merit conversion subsystem
(I) variable frequency pump (1) arrival end connection in；Cold working medium flow control valve (17) port of export of space regenerator and space regenerator are cold
Working medium injector (18) arrival end is connected；Cold working medium injector (18) port of export of space regenerator and the weary gas jet of space regenerator
Device (22) port of export is connected with space regenerator (19)；Regenerator (19) port of export in space is with variable expansion than heat to power output subsystem
Variable frequency pump (1) arrival end connection in system (I)；Regenerator weary gas blowout emitter (22) arrival end in space turns with variable expansion than hot merit
Vane rotary expanders (8) port of export connection changed in subsystem (I)；Temperature and pressure transmitter IV (15) is placed in condenser
(14) on；Temperature and pressure transmitter V (16) is placed in cold working medium flow control valve (17) arrival end of space regenerator；Space backheat
Device liquid level sensor (20) and temperature and pressure transmitter VI (21) are placed on space regenerator (19)；Temperature and pressure transmitter VII
(23) it is placed in weary gas blowout emitter (22) arrival end of space regenerator；Temperature and pressure transmitter VIII (24) is placed in space regenerator (19)
The port of export；Space backheat subsystem (II) is connected with control unit (28).
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107060923A (en) * | 2017-03-07 | 2017-08-18 | 吉林大学 | Space backheat organic Rankine bottoming cycle complementary energy recovery system and control strategy |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107060923A (en) * | 2017-03-07 | 2017-08-18 | 吉林大学 | Space backheat organic Rankine bottoming cycle complementary energy recovery system and control strategy |
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