CN108678917A - A kind of liquid temperature differential electricity generation system using screw-rod air compressor, expanding machine - Google Patents
A kind of liquid temperature differential electricity generation system using screw-rod air compressor, expanding machine Download PDFInfo
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- CN108678917A CN108678917A CN201810393238.3A CN201810393238A CN108678917A CN 108678917 A CN108678917 A CN 108678917A CN 201810393238 A CN201810393238 A CN 201810393238A CN 108678917 A CN108678917 A CN 108678917A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C1/00—Rotary-piston machines or engines
- F01C1/08—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing
- F01C1/12—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type
- F01C1/14—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F01C1/16—Rotary-piston machines or engines of intermeshing engagement type, i.e. with engagement of co- operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G7/00—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for
- F03G7/06—Mechanical-power-producing mechanisms, not otherwise provided for or using energy sources not otherwise provided for using expansion or contraction of bodies due to heating, cooling, moistening, drying or the like
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Power Engineering (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a kind of liquid temperature differential electricity generation systems using screw-rod air compressor, expanding machine for belonging to thermoelectric generation field, including high pressure buffer gas tank, screw type expansion machine, the first knockout drum, the first transport mechanism, low-pressure gas surge tank, screw-rod air compressor, the second knockout drum and the second transport mechanism that sequence is connected；The outlet for storing the first liquid tank of the first temperature range liquid is connected with the liquid inlet of screw type expansion machine and high pressure buffer gas tank respectively；The liquid outlet of first knockout drum is connected by the first generator with the first liquid tank；The outlet for storing the second liquid tank of the first temperature range liquid is connected with the liquid inlet of screw-rod air compressor and low-pressure gas surge tank；The liquid outlet of second knockout drum is connected by the second generator with second liquid tank；The present invention is generated electricity on the basis of realizing Carnot cycle using the energy discarded, while reducing the wastes and pollution of resource.
Description
Technical field
The invention belongs to thermoelectric generation field more particularly to a kind of utilizing screw-rod air compressor, the liquid of expanding machine
Thermo-electric generation system.
Background technology
In industrial circle and sphere of life, there is the largely liquid containing waste heat and waste heat, these heats because taste,
Quality is not high, and the feasibility utilized is relatively low, wherein the overwhelming majority is discarded, has both caused the waste of resource, is also produced to environment
Pollution is given birth to.
In terms of natural resources, China's geothermal energy resources very abundant, still, except a small number of high temperature thermal water resources are for generating electricity
Outside, remaining is mainly used for building and heating, hot spring health care, breeding and planting, and a large amount of geothermal energy resources lack direct heat demand, thus
Idle waste；For solar energy thermal-power-generating, generating efficiency is not high, and it is urgently to be resolved hurrily for how efficiently utilizing solar energy
Problem.
In view of the waste problem of industrial waste heat resource and geothermal energy resources, how these heat sources efficiently use as existing
There is urgent problem to be solved in technology, while in order to make full use of solar energy resources and realize stable electric generation, thus proposes a kind of
Novel liquid temperature differential generation technology is necessary.
Invention content
In order to solve the problems, such as to be mentioned in background technology, screw-rod air compressor, expanding machine are utilized the invention discloses a kind of
Liquid temperature differential electricity generation system, which is characterized in that including：Screw type expansion machine, screw-rod air compressor, high pressure buffer gas tank,
Low-pressure gas surge tank, the first liquid tank, second liquid tank, the first transport mechanism, the second transport mechanism, the first gas-liquid separation
Tank, the second knockout drum, the first heat-exchanger rig, the second heat-exchanger rig, heating device, radiator, the first motor, second
Motor, the first generator, the second generator and main shaft generating equipment；Wherein screw type expansion machine be equipped with the first inlet,
First air inlet, first row gas port, the first female rotor and the first male rotor；Screw-rod air compressor is equipped with the second inlet, the
Two air inlets, second exhaust port, the second female rotor and the second male rotor；
The entrance of the gas vent of high pressure buffer gas tank, the first air inlet, first row gas port, the first knockout drum,
The gas vent of first knockout drum, the first transport mechanism, the gas access of low-pressure gas surge tank, low-pressure gas surge tank
Gas vent, the second air inlet, second exhaust port, the entrance of the second knockout drum, the second knockout drum gas go out
Mouth, the second transport mechanism are connected with the gas access of high pressure buffer gas tank sequence；
The liquid and high pressure gas of the first temperature range are stored in high pressure buffer gas tank；
The liquid and low-pressure gas of second temperature range are stored in low-pressure gas surge tank；
The liquid of the first temperature range is stored in first liquid tank, the outlet of the first liquid tank passes through the first motor point
It is not connected with the liquid inlet of the first inlet and high pressure buffer gas tank；The liquid outlet of first knockout drum passes through first
Generator is connected with the entrance of the first liquid tank；
The liquid of second temperature range is stored in second liquid tank, the outlet of second liquid tank passes through the second motor point
It is not connected with the liquid inlet of the second inlet and low-pressure gas surge tank；The liquid outlet of second knockout drum passes through second
Generator is connected with the entrance of second liquid tank；
The main shaft of main shaft generating equipment, the first male rotor and the second male rotor are coaxial.
Thermo-electric generation system further includes：Heating device, radiator, the first heat-exchanger rig and the second heat-exchanger rig；Wherein,
Heating device and the first liquid tank are connected with the side of the first heat-exchanger rig respectively, using in the first liquid tank of heating device pair
Liquid with the first temperature range is heated to keep the first temperature range；Radiator and second liquid tank are respectively with
The side of two heat-exchanger rigs is connected, and is dissipated to the liquid with second temperature range in second liquid tank using radiator
Heat is to keep second temperature range.
First temperature range is higher than second temperature range.
The low-pressure gas and liquid of screw type expansion machine discharge are stored in first knockout drum；Second gas
The high pressure gas and liquid of screw-rod air compressor discharge are stored in liquid knockout drum；First transport mechanism divides the first gas-liquid
It is migrated to low-pressure gas surge tank from the low-pressure gas in tank；Second transport mechanism is by the high pressure in the second knockout drum
Gas transfer is to high pressure gas surge tank.
First transport mechanism is expanding machine, and second transport mechanism is compressor.
First transport mechanism is the first gas piston cylinder, the first gas piston rod on the first gas piston cylinder and the
Three generators are connected；Second transport mechanism is the second gas piston cylinder, second gas piston of second gas on piston cylinder
Bar is connected with third motor.
The main shaft of first motor and second generator is coaxial, second motor and first power generation
The main shaft of machine is coaxial.
The main shaft of first motor and first generator is coaxial, and second motor is sent out with described second
The main shaft of motor is coaxial.
Beneficial effects of the present invention are：
1, this system efficiently uses the heat source discarded, can not only be generated electricity simultaneously using these energy, but also
The waste of resource can be reduced and reduce pollution；
2, this system using liquid temperature differential power generation system using the first liquid cell the first temperature range liquid and
The temperature difference of the liquid of the second temperature range in second liquid pond generates electricity, and can provide a kind of power generation system of sustainable power generation
System；
3, highest hot generating efficiency theoretically may be implemented on the basis of realizing Carnot cycle in this system.
Description of the drawings
Fig. 1 is a kind of system of liquid temperature differential electricity generation system embodiment 1 using screw-rod air compressor, expanding machine of the invention
Flow diagram；
Fig. 2 is the system flow schematic diagram of the embodiment of the present invention 2；
Fig. 3 is the system flow schematic diagram of the embodiment of the present invention 3；
Fig. 4 is the system flow schematic diagram of the embodiment of the present invention 4；
Fig. 5 is the system flow schematic diagram of the embodiment of the present invention 5；
Fig. 6 is the system connection diagram of the embodiment of the present invention 6；
In figure：1- screw type expansion machines, 2- screw-rod air compressors, 7- high pressure buffer gas tanks, 8- low-pressure gas surge tanks,
The first liquid tanks of 31-, 32- second liquid tanks, the first transport mechanisms of 41-, the second transport mechanisms of 42-, 41a- first driving means,
The second driving devices of 42a-, 41b- the first gas piston cylinders, 42b- the second gas piston cylinders, 41c- expanding machines, 42c- compressors,
The first knockout drums of 51-, the second knockout drums of 52-, the first inlets of 11-, the first air inlets of 12-, 13- first exhausts
Mouthful, the first female rotors of 14-, the first male rotors of 15-, the second inlets of 21-, the second air inlets of 22-, 23- second exhaust port, 24-
Second female rotor, the second male rotors of 25-, 112- piston brace rods, the first hydraulic piston engines of G1a-, the second hydraulic pistons of M2a-
Machine, the 8th valves of 2a4-, the second valves of 1a2-, 1a3- third valves, the 4th valves of 1a4-, the 5th valves of 2a1-, 2a2- the 6th
Valve, the 7th valves of 2a3-, the first valves of 1a1-, the first motor of M1-, the second motor of M2-, the first generators of G1-, G2-
Second generator, G3- third generators, G4- main shaft generating equipments, G5- generating equipments.
Specific implementation mode
Embodiment 1 as shown in Figure 1, including：Screw type expansion machine 1, screw-rod air compressor 2, high pressure buffer gas tank 7,
Low-pressure gas surge tank 8, the first liquid tank 31, second liquid tank 32, the first transport mechanism 41, the second transport mechanism 42, first
Knockout drum 51, the second knockout drum 52, the first heat-exchanger rig 61, the second heat-exchanger rig 62, heating device 91, heat dissipation dress
Set the 92, first motor M1, the second motor M2, the first generator G1, the second generator G2 and main shaft generating equipment G4；
Wherein it is cloudy to be equipped with the first inlet 11, the first air inlet 12, first row gas port 13, first for screw type expansion machine 1
Rotor 14 and the first male rotor 15；
Screw-rod air compressor 2 is equipped with the second inlet 21, the second air inlet 22, second exhaust port 23, the second female rotor
24 and second male rotor 25；
The liquid and high pressure gas of the first temperature range are stored in high pressure buffer gas tank 7；
The liquid and low-pressure gas of second temperature range are stored in low-pressure gas surge tank 8；
The liquid of the first temperature range is stored in first liquid tank 31, the outlet of the first liquid tank 31 is electronic by first
Machine M1 is connected with the liquid inlet of the first inlet 11 and high pressure buffer gas tank 7 respectively；The liquid of first knockout drum 51
Outlet is connected by the first generator G1 with the entrance of the first liquid tank 31；
The liquid of second temperature range is stored in second liquid tank 32, the outlet of second liquid tank 32 is electronic by second
Machine M2 is connected with the liquid inlet of the second inlet 21 and low-pressure gas surge tank 8 respectively；The liquid of second knockout drum 52
Outlet is connected by the second generator G2 with the entrance of second liquid tank 32；
The acting as migrating the low-pressure gas in the first knockout drum 51 to low-pressure gas of first transport mechanism 41 is delayed
Rush tank 8；
The acting as migrating the high pressure gas in the second knockout drum 52 to high pressure gas of second transport mechanism 42 is delayed
Rush tank 7；
The low-pressure gas and liquid of the discharge of screw type expansion machine 1 are stored in first knockout drum 51；
The high pressure gas and liquid of the discharge of screw-rod air compressor 2 are stored in second knockout drum 52；
Wherein, the first temperature range is higher than second temperature range, the gas vent of high pressure buffer gas tank 7, the first air inlet
The entrance of mouth 12, first row gas port 13, the first knockout drum 51, the gas vent of the first knockout drum 51, the first migration
Mechanism 41, the gas access of low-pressure gas surge tank 8, the gas vent of low-pressure gas surge tank 8, the second air inlet 22, second
Exhaust outlet 23, the entrance of the second knockout drum 52, the gas vent of the second knockout drum 52, the second transport mechanism 42 and height
Calm the anger body surge tank 7 gas access sequence be connected；
The main shaft of main shaft generating equipment G4, the first male rotor 15 and the second male rotor 25 are coaxial；
The present embodiment further includes：Heating device 91, radiator 92, the first heat-exchanger rig 61 and the second heat-exchanger rig 62；
Wherein, heating device 91 and the first liquid tank 31 are connected with the side of the first heat-exchanger rig 61 respectively, using heating device 91 and
First heat-exchanger rig 61 heats to keep the first temperature the liquid with the first temperature range in the first liquid tank 31
Range；Radiator 92 and second liquid tank 32 are connected with the side of the second radiator 62 respectively, using radiator 92 and
Second radiator 62 radiates to keep second temperature to the liquid with second temperature range in second liquid tank 32
Range.
The workflow of embodiment 1 is：
When original state, the liquid and high pressure gas of the first temperature range, the first liquid are stored in high pressure buffer gas tank 7
The liquid of the first temperature range, i.e. high-temp liquid are stored in body tank 31, low-pressure gas surge tank 8 stores second temperature range
Liquid and low-pressure gas, the liquid of second temperature range, i.e. cryogenic liquid are stored in second liquid tank 32.
After start-up operation, the high pressure gas in high pressure buffer gas tank 7 enters screw type expansion machine 1 through the first air inlet 12
Interior, the liquid that the first motor M1 migrates the first temperature range in the first liquid tank 31 enters screw through the first inlet 11
In expanding machine 1, high pressure gas expansion work in screw type expansion machine 1 pushes the rotation of the first male rotor 15, expansion work to terminate
After become low-pressure gas, enter the through first row gas port 13 together with the liquid of the first temperature range in screw type expansion machine 1
In one knockout drum 51, the liquid in the first knockout drum 51 enters the first liquid tank 31 after the first generator G1 power generations
Interior, the low-pressure gas in the first knockout drum 51 enters low-pressure gas surge tank 8 through the first transport mechanism 41, and low-pressure gas is slow
It rushes the low-pressure gas in tank 8 through the second air inlet 22 to enter in screw-rod air compressor 2, the second motor M2 migrates second liquid tank
The liquid of second temperature range in 32 enters through the second inlet 21 in screw-rod air compressor 2, the first male rotor 15 and second
Male rotor 25, which rotates, to be coaxially connected, and the rotation of the first male rotor 15 drives the rotation of the second male rotor 25, the second male rotor 25 to rotate pressure
Low-pressure gas in compression screw arbor formula air compressor machine 2, low-pressure gas are compressed into high pressure gas, high pressure gas and screw after compression
The liquid of second temperature range in air compressor machine 2 enters through second exhaust port 23 in the second knockout drum 52 together, the second gas
Liquid in liquid knockout drum 52 enters after the second generator G2 power generations in second liquid tank 32, in the second knockout drum 52
Gas enters high pressure buffer gas tank 7 through the second transport mechanism 42, meanwhile, the second male rotor 25 drives main shaft generating equipment G4 hairs
Electricity.
The present embodiment work on the way, first entered from the first liquid tank 31 in screw type expansion machine 1 need to be controlled
The amount of liquid of temperature range ensures that liquid temperature approximation in screw type expansion machine 1 is constant, and it is approximately isothermal expansion to make expansion；
Control enters the amount of liquid of the second temperature range in screw-rod air compressor 2 from second liquid tank 32, ensures liquid in screw rod
Temperature approximation is constant in formula air compressor machine 2, and it is approximately isotherm compression to make compression.
The present embodiment work on the way, the liquid of the first temperature range in the first liquid tank 31 passes through the first motor
M1 is input in high pressure buffer gas tank 7, to make the liquid in high pressure buffer gas tank 7 keep in the first temperature range；
Liquid in low-pressure gas surge tank 8 is handed over by the liquid of the second temperature range in the second motor M2 and second liquid tank 32
The liquid changed to make in low-pressure gas surge tank 8 keeps second temperature range.
Heating device 91 can be solar heat collector, this utilizes screw-rod air compressor, the liquid temperature differential hair of expanding machine
Electric system can be heated using the liquid of the first temperature range in the first liquid tank of solar energy pair 31 to keep the first temperature
Range, and electric energy is finally converted the solar into, solar heat collector can utilize Fresnel Lenses, sun light tracking device etc. poly-
Light device heats liquid in high-temperature pipe in heating device using slot type or dish-style light condensing technology, and is changed by first
Thermal 61 carries out concurrent heating to the liquid with the first temperature range, transmits heat to the liquid with the first temperature range, makes
The liquid with the first temperature range obtained in the first liquid cell keeps the first temperature range constant.
Heating device 91 can also be other heating devices, such as：Geothermal heating device or boiler etc..Geothermal heating device,
Or boiler can utilize the high temperature heat source such as industrial exhaust heat, geothermal energy of other forms, carry the heat sources such as hot water, the flue gas of waste heat.
Radiator can utilize air and water at low temperature these low-temperature heat sources, be radiated using air-cooled and water cooling equipment.
Embodiment 2 as shown in Figure 2 now only describes the part different from embodiment 1,
In the present embodiment, the first transport mechanism 41 in embodiment 1 is specially first driving means 41a, the first driving
The entrance of device 41a is connected with low-pressure gas surge tank 8 and with the first knockout drum 51 respectively, for migrating the first gas-liquid
Low-pressure gas in knockout drum 51 is to low-pressure gas surge tank 8.
In the present embodiment, the second transport mechanism 42 in embodiment 1 is specially the second driving device 42a, the second driving
The entrance of device 42a is connected with high pressure buffer gas tank 7 and with the second knockout drum 52 respectively, for migrating the second gas-liquid
High pressure gas in knockout drum 52 is to high pressure gas surge tank 7.
In the present embodiment, the first temperature range is 200 DEG C, and the first temperature range is 20 DEG C；When in screw type expansion machine 1
When expansion ratio between first row gas port 13 and the first air inlet 12 is 10 to 1, theoretical generating efficiency is 26.68%, actual power
Efficiency is about 20%.
In the present embodiment, gas, which is directly moved into surge tank and done etc., holds heating, cooling processing；Wherein, first driving means 41a
Low-pressure gas in first knockout drum 51 is migrated into low-pressure gas surge tank 8, while first temperature range is low
Body of calming the anger such as carries out at the appearances cooling in low-pressure gas surge tank 8, and temperature drops to the second temperature of liquid in low-pressure gas surge tank 8
Range；Second driving device 42a migrates the high pressure gas in the second knockout drum 52 into high pressure gas surge tank 7, together
When the second temperature range high pressure gas the appearances heating such as carry out in high pressure buffer gas tank 7, it is slow that temperature is raised to high pressure gas
Rush the first temperature range of liquid in tank 7.
In the present embodiment, transport mechanism can be proportioning valve, pass through the proportional valve control gas transfer speed, transport mechanism
May be check valve, the gas transfer in direct knockout drum to gas buffer tank.
Embodiment 3 as shown in Figure 3 now only describes the part different from embodiment 1,
In the present embodiment, the first transport mechanism 41 in embodiment 1 is specially the first gas piston cylinder 41b, the first gas
It is connected respectively with low-pressure gas surge tank 8 and with the first knockout drum 51 with the entrance of piston cylinder 41b, for storing from the
The low-pressure gas of one knockout drum 51 migration, the first gas piston cylinder 41b include the first gas piston rod and are used with the first gas
Piston rod connected third generator G3, third generator G3 for will migrate to the low-pressure gas in the first gas piston cylinder into
Row adiabatic expansion simultaneously generates electricity；
In the present embodiment, the second transport mechanism 42 in embodiment 1 is specially the second gas piston cylinder 42b, the second gas
It is connected respectively with high pressure buffer gas tank 7 and with the second knockout drum 52 with the entrance of piston cylinder 42b, for storing from the
The high pressure gas of two knockout drums 52 migration, the second gas piston cylinder 42b include the second gas piston rod and are used with the second gas
The connected third motor M3 of piston rod, third motor M3 is for driving the second gas piston rod movement with adiabatic compression high pressure
Gas.
In the present embodiment, the first temperature range is 200 DEG C, and the first temperature range is 20 DEG C, and theoretical generating efficiency is
38.05%, actual power efficiency is about 32%.
In the course of work of the present embodiment, gas moves into each gas piston cylinder, the first gas in piston cylinder 41b to low
Body of calming the anger carries out adiabatic expansion and generates electricity and reaches second temperature range to gas temperature, the second gas in piston cylinder 42b to high pressure
Gas carries out adiabatic compression to gas temperature and reaches the first temperature range, and cooperation isothermal of gas in screw type expansion machine 1 is swollen
Swollen, the isotherm compression with the gas in screw-rod air compressor 2, this four compression swelling processes constitute Carnot cycle, reach highest
Efficiency of heat engine.
Embodiment 4 as shown in Figure 4 now only describes the part different from embodiment 1,
In the present embodiment, the first transport mechanism 41 in embodiment 1 is specially expanding machine 41c, the discrepancy of expanding machine 41c
Mouth is connected with low-pressure gas surge tank 8 and with the first knockout drum 51 respectively, for using in the first knockout drum 51
Low-pressure gas adiabatic expansion generates electricity；The electric power output of expanding machine 41c is connected with power grid；
In the present embodiment, the second transport mechanism 42 in embodiment 1 is specially compressor 42c, the discrepancy of compressor 42c
Mouth is connected with high pressure buffer gas tank 7 and with the second knockout drum 52 respectively, for the high pressure in the second knockout drum 52
Gas carries out adiabatic compression.
In the present embodiment, the first temperature range is 200 DEG C, and the first temperature range is 20 DEG C, and theoretical generating efficiency is
38.05%, actual power efficiency is about 32%.
In the present embodiment, gas is moved into first in expanding machine or compressor, is carried out to low-pressure gas in expanding machine 41c exhausted
It thermally expands power generation to gas temperature and reaches second temperature range, adiabatic compression is carried out to gas to high pressure gas in compressor 42c
Temperature reaches the first temperature range, and the process that gas works in expanding machine and compressor is expanded with gas is closed in screw
The process of the isotherm compression of isothermal expansion and gas in screw-rod air compressor 2 in machine 1, this four expansion compressions is constituted
Carnot cycle reaches highest efficiency of heat engine.
Embodiment 5 as shown in Figure 5 now only describes the part different from embodiment 1,
In the present embodiment, the main shaft of the first motor M1 and the second generator G2 are coaxial, the second motor M2 and first
The main shaft of generator G1 is coaxial.
In the present embodiment, the first motor M1 is driven to rotate using the second generator G2, the first generator G1 drives
Second motor M2 rotation, it is possible to reduce because mechanical energy is converted into electric energy, electric energy is then converted to the loss in efficiency of mechanical energy；Mirror
The liquid pressure that liquid pressure difference in the second both sides generator G2 is less than the first both sides motor M1 is poor, and the first motor M1 is not
The mechanical energy of foot is realized by additional electrical energy through the first motor M1, is more than in view of the liquid pressure difference of the first both sides generator G1
The liquid pressure of second both sides motor M2 is poor, and the extra electric energy that G1 is sent out flows into power grid.
Actual power efficiency can be improved about 2% by the present embodiment in actual power.
Similarly, also can be coaxial by the main shaft of the first motor M1 and the first generator G1 in the present embodiment, and second is electronic
Machine M2 and the main shaft of the second generator G2 are coaxial.
Embodiment 6 as shown in FIG. 6 now only describes the part different from embodiment 5,
In the present embodiment, by two identical hydraulic piston engine (the first hydraulic piston engine G1a and the second hydraulic piston engines
M2a) respectively instead of main shaft in embodiment 5 coaxial the first motor M1 and the second generator G2,
The main shaft of the main shaft of first hydraulic piston engine G1a and the second hydraulic piston engine M2a are all piston brace rod 112, living
One end of plug connecting rod 112 is connected with generating equipment G5；The left end of first hydraulic piston engine G1a is equipped with the first valve 1a1 and the
The right end of three valve 1a3, the first hydraulic piston engine G1a is equipped with the second valve 1a2 and the 4th valve 1a4, the first valve 1a1 and the
Two valve 1a2 are connected after converging with the first knockout drum 51, and third valve 1a3 and the 4th valve 1a4 converge rear and the first liquid
Body tank 31 is connected；
The left end of second hydraulic piston engine M2a is equipped with the 5th valve 2a1 and the 7th valve 2a3, the second hydraulic piston engine M2a
Right end equipped with the 6th valve 2a2 and the 8th valve 2a4, the 5th valve 2a1 and the 6th valve 2a2 converge after with low-pressure gas delay
It rushes tank 8 with the second inlet 21 to be connected, the 7th valve 2a3 and the 8th valve 2a4 are connected after converging with second liquid tank 32；
Generating equipment G5 is linear motor or crank motor；
When in the present embodiment the first hydraulic piston engine G1a and when the second hydraulic piston engine M2a work, the first liquid tank 31
The liquid of the first interior temperature range enters through the first hydraulic piston engine G1a in screw type expansion machine 1, the second knockout drum 52
Interior liquid enters through the second hydraulic piston engine M2a in second liquid tank 32, when the generated output of the second generator G2 is more than the
When the power consumption of one motor M1, then generating equipment G5 is Generator Status；When the generated output of the second generator G2 is less than
When the power consumption of the first motor M1, then generator G5 is electric motor state；
The work period of piston brace rod 112 is in the present embodiment：
The preparation of piston brace rod 112 positioned at left end moves right, and opens third valve 1a3, the second valve at this time
1a2, the 5th valve 2a1 and the 8th valve 2a4 close the first valve 1a1, the 4th valve 1a4, the 6th valve 2a2 and the 7th valve
Door 2a3；
When piston brace rod 112 starts to move right, the liquid of first temperature range is through third in the first liquid tank 31
Valve 1a3 enters the left side of the first hydraulic piston engine G1a, the liquid warp of first the first temperature range of the right sides hydraulic piston engine G1a
Second valve 1a2 and the first inlet 11 enter in screw type expansion machine 1；Second temperature range in second knockout drum 52
Liquid enters the left side of the second hydraulic piston engine M2a through the 5th valve 2a1, and the liquid on the right side of the second hydraulic piston engine M2a is through the
Eight valve 2a4 enter in second liquid tank 32, until piston brace rod 112 moves to the rightmost side；
The preparation of piston brace rod 112 for being subsequently positioned at right end moves downward, and opens the first valve 1a1, the 4th valve at this time
Door 1a4, the 6th valve 2a2 and the 7th valve 2a3, close the second valve 1a2, third valve 1a3, the 5th valve 2a1 and the 8th
Valve 2a4；
When piston brace rod 112 starts to move downward, the liquid of first temperature range is through the 4th in the first liquid tank 31
Valve 1a4 enters the right side of the first hydraulic piston engine G1a, the liquid warp of first the first temperature range of the left sides hydraulic piston engine G1a
First valve 1a1 and the first inlet 11 enter in screw type expansion machine 1；Second temperature range in second knockout drum 52
Liquid enters the right side of the second hydraulic piston engine M2a through the 6th valve 2a2, and the liquid on the left of the second hydraulic piston engine M2a is through the
Seven valve 2a3 enter in second liquid tank 32, until piston brace rod 112 moves to the leftmost side；One cycle of operation finishes；
Piston brace rod 112 is moved with the above loop cycle, until complete power generation or electrokinetic process terminate.
Similarly, main shaft the second coaxial motor M2 and the first generator G1 is substituted for other two phase in the present embodiment
Same hydraulic piston engine, and the main shaft is connected with another generating equipment.
The coaxial connection scheme of another main shaft is in the present embodiment：
The main shaft of first motor M1 and the first generator G1 are coaxial and are substituted for two identical hydraulic piston engines, this two
A hydraulic piston engine is all connected with the first liquid tank 31 equipped with the first temperature range liquid.
The main shaft of second motor M2 and the second generator G2 are coaxially also substituted for two identical hydraulic piston engines, this two
A hydraulic piston engine is all connected with the second liquid tank 32 equipped with second temperature range liquid.
Claims (8)
1. a kind of liquid temperature differential electricity generation system using screw-rod air compressor, expanding machine, which is characterized in that including：Screw is swollen
Swollen machine (1), screw-rod air compressor (2), high pressure buffer gas tank (7), low-pressure gas surge tank (8), the first liquid tank (31),
Two liquid tanks (32), the first transport mechanism (41), the second transport mechanism (42), the first knockout drum (51), the second gas-liquid point
From tank (52), the first heat-exchanger rig (61), the second heat-exchanger rig (62), heating device (91), radiator (92), first electronic
Machine (M1), the second motor (M2), the first generator (G1), the second generator (G2) and main shaft generating equipment (G4)；Wherein spiral shell
Expander (1) is equipped with the first inlet (11), the first air inlet (12), first row gas port (13), the first female rotor
(14) and the first male rotor (15)；Screw-rod air compressor (2) is equipped with the second inlet (21), the second air inlet (22), second
Exhaust outlet (23), the second female rotor (24) and the second male rotor (25)；
Gas vent, the first air inlet (12), first row gas port (13), the first knockout drum of high pressure buffer gas tank (7)
(51) entrance, the gas vent of the first knockout drum (51), the first transport mechanism (41), low-pressure gas surge tank (8)
Gas access, the gas vent of low-pressure gas surge tank (8), the second air inlet (22), second exhaust port (23), the second gas-liquid point
Gas vent, the second transport mechanism (42) and the high pressure buffer gas tank of entrance, the second knockout drum (52) from tank (52)
(7) gas access sequence is connected；
The liquid and high pressure gas of the first temperature range are stored in high pressure buffer gas tank (7)；
The liquid and low-pressure gas of second temperature range are stored in low-pressure gas surge tank (8)；
The liquid of the first temperature range is stored in first liquid tank (31), the outlet of the first liquid tank (31) is electronic by first
Machine (M1) is connected with the liquid inlet of the first inlet (11) and high pressure buffer gas tank (7) respectively；First knockout drum
(51) liquid outlet is connected by the first generator (G1) with the entrance of the first liquid tank (31)；
The liquid of second temperature range is stored in second liquid tank (32), the outlet of second liquid tank (32) is electronic by second
Machine (M2) is connected with the liquid inlet of the second inlet (21) and low-pressure gas surge tank (8) respectively；Second knockout drum
(52) liquid outlet is connected by the second generator (G2) with the entrance of second liquid tank (32)；
Main shaft, the first male rotor (15) and the second male rotor (25) of main shaft generating equipment (G4) are coaxial.
2. a kind of liquid temperature differential electricity generation system using screw-rod air compressor, expanding machine according to claim 1, feature
It is, thermo-electric generation system further includes：Heating device (91), radiator (92), the first heat-exchanger rig (61) and the second heat exchange
Device (62)；Wherein, heating device (91) and the first liquid tank (31) are connected with the side of the first heat-exchanger rig (61) respectively, profit
The liquid with the first temperature range in the first liquid tank (31) is heated with heating device (91) to keep the first temperature
Spend range；Radiator (92) and second liquid tank (32) are connected with the side of the second heat-exchanger rig (62) respectively, utilize heat dissipation
Device (92) radiates to keep second temperature range to the liquid with second temperature range in second liquid tank (32).
3. a kind of liquid temperature differential electricity generation system using screw-rod air compressor, expanding machine according to claim 1, feature
It is, first temperature range is higher than second temperature range.
4. a kind of liquid temperature differential electricity generation system using screw-rod air compressor, expanding machine according to claim 1, feature
It is, the low-pressure gas and liquid of screw type expansion machine (1) discharge is stored in first knockout drum (51)；Described
The high pressure gas and liquid of screw-rod air compressor (2) discharge are stored in two knockout drums (52)；First transport mechanism
(41) low-pressure gas in the first knockout drum (51) is migrated to low-pressure gas surge tank (8)；Second transport mechanism
(42) high pressure gas in the second knockout drum (52) is migrated to high pressure gas surge tank (7).
5. a kind of liquid temperature differential electricity generation system using screw-rod air compressor, expanding machine according to claim 4, feature
It is, first transport mechanism (41) is expanding machine (41c), and second transport mechanism (42) is compressor (42c).
6. a kind of liquid temperature differential electricity generation system using screw-rod air compressor, expanding machine according to claim 4, feature
It is, first transport mechanism (41) is the first gas piston cylinder (41b), first gas of first gas on piston cylinder (41b)
It is connected with third generator (G3) with piston rod；Second transport mechanism (42) is the second gas piston cylinder (42b), the second gas
It is connected with third motor (M3) with the second gas piston rod on piston cylinder (42b).
7. a kind of liquid temperature differential electricity generation system using screw-rod air compressor, expanding machine according to claim 1, feature
It is, the main shaft of first motor (M1) and second generator (G2) is coaxial, second motor (M2) and institute
The main shaft for stating the first generator (G1) is coaxial.
8. a kind of liquid temperature differential electricity generation system using screw-rod air compressor, expanding machine according to claim 1, feature
Be, the main shaft of first motor (M1) and first generator (G1) is coaxial, and second motor (M2) with
The main shaft of second generator (G2) is coaxial.
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| CN115217525A (en) * | 2022-06-09 | 2022-10-21 | 国网浙江省电力有限公司宁波供电公司 | Hydrogen-electricity coupling system based on hydrogen isothermal compression and expansion and control method |
| CN115263455A (en) * | 2022-06-09 | 2022-11-01 | 国网浙江省电力有限公司宁波供电公司 | Hydrogen isothermal expansion and hydrogen fuel cell combined operation system and control method |
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| CN108678917B (en) | 2020-04-07 |
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