CN110234863A - Re-generatively cooled system - Google Patents
Re-generatively cooled system Download PDFInfo
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- CN110234863A CN110234863A CN201880007916.6A CN201880007916A CN110234863A CN 110234863 A CN110234863 A CN 110234863A CN 201880007916 A CN201880007916 A CN 201880007916A CN 110234863 A CN110234863 A CN 110234863A
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- Prior art keywords
- gas
- chamber
- expander
- pipeline
- cooled system
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G1/00—Hot gas positive-displacement engine plants
- F02G1/02—Hot gas positive-displacement engine plants of open-cycle type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G1/00—Hot gas positive-displacement engine plants
- F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
- F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
- F02G1/053—Component parts or details
- F02G1/055—Heaters or coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02G—HOT GAS OR COMBUSTION-PRODUCT POSITIVE-DISPLACEMENT ENGINE PLANTS; USE OF WASTE HEAT OF COMBUSTION ENGINES; NOT OTHERWISE PROVIDED FOR
- F02G1/00—Hot gas positive-displacement engine plants
- F02G1/04—Hot gas positive-displacement engine plants of closed-cycle type
- F02G1/043—Hot gas positive-displacement engine plants of closed-cycle type the engine being operated by expansion and contraction of a mass of working gas which is heated and cooled in one of a plurality of constantly communicating expansible chambers, e.g. Stirling cycle type engines
- F02G1/053—Component parts or details
- F02G1/057—Regenerators
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
Re-generatively cooled system (100) is provided for regeneration Thermal Motor (1), and including cooling chamber (79), the cooling chamber surrounds gas expander (78), retain gas circulation space (80) between the chamber (79) and the expander (78), the working gas (81) being discharged from gas expander (78) recycles in the space (80) back to before regenerative heat exchanger (5), the working gas described in regenerative heat exchanger is cooled, most of heat of the gas (81) is reintroduced in the thermodynamic cycle of regeneration Thermal Motor (1).
Description
The present invention relates to a kind of re-generatively cooled system, the re-generatively cooled system especially constitutes transmitting-expansion and regeneration
The improvement of Thermal Motor, the transmitting-expansion and regeneration Thermal Motor are belong on 2 25th, 2015 of applicant special
Benefit application No.FR 15 51593 and Septembers in 2016 1st patent No. US 2016/0252048 announced for also belonging to applicant
The theme of A1.
The Bretton regeneration cycle implemented generally by means of centrifugal compressor and turbine is known.
According to this mode of embodiment, it is more aobvious than the efficiency of controlled-ignition engine that the circulation causes engine to provide
Write higher efficiency.The efficiency is suitable with the efficiency of quick diesel engine.However, it still ratio such as in Ship Propeling or
The very big low speed two-stroke diesel engine of discharge capacity found in static power generation it is small.
Other than very moderate overall efficiency, the centrifugal compressor and propeller for turboprop of Bretton regeneration cycle are used
Machine provides optimum efficiency in relatively narrow power and rotational velocity range.In addition, when their responses in algorithm for power modulation
Between be long.Due to these a variety of causes, their application field is restricted, and they are difficult to adapt to land transport, special
It is not car and truck.
Transmitting-the expansion and regeneration Thermal Motor for having proposed patent application No.FR 15 51593 lack to make up these
Point.The specific characteristic of the engine is no longer to be implemented to regenerate Brayton cycle by means of centrifugal compressor and turbine,
But implement to regenerate by means of Stirling engine or at least by the positive displacement expander formed around " expander cylinder "
Brayton cycle.
In the attached drawing of patent application No.FR 15 51593, it should be noted that each end of the expander cylinder
It is closed by expander cylinder head.In addition, the cylinder accommodates double-acting expansion device piston, to form the biography of two variable volumes
Pass-expansion chamber.The piston can shift in expander cylinder, dynamic to be transmitted to function via known connecting rod and crankshaft
Power output shaft.
The claimed advantage of theme as patent application No.FR 15 51593 first is that by heat turn
Successful efficiency is changed, the efficiency is more much higher than the efficiency of the substitution general internal combustion engine of any working principle, it means that identical
Work provides fuel consumption more lower than the conventional engine, and equally reduces the discharge of related carbon dioxide.
In order to realize these targets, as explicitly pointed out in patent application FR 15 51593, need to meet at least three
Part.
First is that positive displacement expander is actually made of single cylinder, this is not to be related to the prior art of this machine
Introduction.As an example, the patent US2003/228237 A1 on December 11st, 2003 includes compressor, regeneration heat exchange really
Device, heat source and expander, however expander not instead of cylinder, the inventor of the patent are so-called " cycloid ".
Second condition is the air inlet and exhaust metering valve of gas access and outlet by appropriate phase in expander cylinder
It adjusts, this causes pressure and the relational graph of volume as shown in the figure in patent application No.FR 15 51593.
Third condition is that the sealing device between piston and cylinder can operate at very high temperatures.
It should be noted that transmitting-expansion described in patent application No.FR 15 51593 and regeneration Thermal Motor are by mentioning
A kind of cushion segments of innovation meet the third condition out, and the cushion segments are by the inflatable and inflatable ring continuously perforated
It is formed, the ring is located in the annular groove designed in expander piston.The ring is together defined with the groove and is connected to
The pressure dispensed chambers of source of pressurised fluid.
This Xinmi City's seal apparatus not contacted directly with expander cylinder makes it possible that cylinder operates at high temperature,
And the air inlet closed in the cylinder head of the cylinder and exhaust metering valve make transmitting-expansion and regenerate the efficiency of Thermal Motor
Maximization is possibly realized.
Innovation sealing device based on cushion segments is intentionally placed in the claim for being subordinated to independent claims
In patent application No.FR 15 51593.It will be understood that the invention by proposing him in this way, inventor are not excluded for
Other sealing solutions that described section can be substituted, even if the latter is in the patent application by as transmitting-expansion and again
The key element of heat force engine proposes.
As fairly set out in patent application FR 15 51593, in order to start transmitting-expansion and regeneration heating power
The efficiency of machine is as high as possible, and the inner wall of expander cylinder needs to be increased to high temperature, so that the hot gas for introducing the cylinder is connecing
It will not cool down when touching these walls, or at least be cooled down as few as possible by these walls.This is at least suitable for the interior of expander cylinder
Wall, and the inner wall with the cylinder head of cylinder cooperation.
According to the engine thermodynamics principle that the Kano Sa Di (Sadi Carnot) is proposed, patent application FR 15 51593
It is proposed, transmitting-expansion and regenerate Thermal Motor efficiency with introduce expander cylinder gas temperature more Gao Ergeng high.
This is why patent application FR 15 51593 requires the cylinder head and biography of expander cylinder, expander cylinder
It passs-expands and regenerate the expander piston of Thermal Motor by the material of resistance to very high temperature (such as based on aluminium oxide, zircon or carbonization
The ceramics of silicon) it is made.
Hot part and thermal part or the engine modifications at a high temperature of transmitting-expansion and regeneration Thermal Motor
Patented subject matter.Therefore, Septembers in 2015 14th patent application No.FR 15 58585 for belonging to the applicant, institute can be quoted
It states patent application and is related to double acting and adaptive support expander cylinder, the cylinder can work at high temperature and be subjected to not
It is same as the thermal expansion of the thermal expansion of the gearbox attached by it.In same one side, it should also be noted that also belonging to the 2015 of applicant
On September 14, patent application No.FR 15 58593, the patent application are related to being made of prestressing force component and can be in temperature
The two-way ram of lower operation.
It note that the patent application No.FR 15 58585 just quoted and No.FR 15 58593 are proposed to set same
Unusual robust solution existing for standby middle processing hot parts and low temperature part.
Particularly, the construction proposed in the patent largely prevent heat moved to from hot part and they
The cold part of cooperation.Which ensure that the efficiency of transmitting-expansion and regeneration Thermal Motor improves.
On the other hand, there is no change for the improvement proposed in patent application No.FR 15 58585 and No.FR 15 58593
This fact, i.e., if the gas temperature for introducing the expander cylinder of the engine is such as 1300 degrees Celsius, the gas
The temperature of the inside wall of cylinder will be locally close to 1300 degrees Celsius, and wherein the mean temperature of these walls is close to such as 1000 degrees Celsius.
Therefore, the temperature of these gases directly determines composition transmitting-expansion and regenerates the expander gas of Thermal Motor
The temperature that the material of the hot part of cylinder must endure as.Therefore, indirectly, the temperature tolerance of these materials determines the engine
Maximum availability of efficient.
Moreover, it is noted that the material quantity for being able to bear very high-temperature discussed is relatively fewer, because they are also needed
The mechanical strength of raising to be provided at these identical temperature, while also there is corrosion resistance and inoxidizability.
The material is mainly ceramics, such as aluminium oxide, zircon, silicon carbide or silicon nitride.These materials are hard and difficult
With processing.Therefore, the selling price of fabricated part is opposite improves, and which hinders auto industrys to use patent application FR 15
Transmitting-expansion described in 51593 and regeneration Thermal Motor.In fact, since the industry is towards consumption market, institute
Very sensitive to manufacture selling price with it, manufacture selling price needs as low as possible.
Therefore, it is desirable that the expander cylinder inner wall of the engine maintains such as 700 degrees Celsius to 900 degrees Celsius
Maximum temperature.In fact, at these temperatures, production and processing cost are than ceramic low more common material, such as cast iron
Or stainless steel or refractory material, it can be used to manufacture expander cylinder.For cylinder head and they match accordingly with the cylinder
The collection chamber and pipeline of conjunction are also such.
However, on the one hand must be prevented from the expander cylinder for being permitted into transmitting-expansion and regeneration Thermal Motor
The temperature of hot gas reduces, and on the other hand must be allowed for the heat of these gases as dead loss by contacting with these gases
The relatively cold wall of cylinder escapes.In fact, the two movements can have significant decrease transmitting-expansion and regeneration Thermal Motor final
The detrimental consequences of efficiency.
Therefore, in the prior art, transmitting-expansion and regeneration very high in efficiency but that be costly and difficult to production are needed
Thermal Motor and based on same principle but using lower production costs but between the engine of material that efficiency is greatly reduced into
Row selection.Which constitute problems.
In order to solve this problem, in one particular embodiment, re-generatively cooled system of the invention allows:
It significantly reduces transmitting-expansion as 15 51593 theme of patent application FR and regenerates the swollen of Thermal Motor
The inner wall temperature of swollen device cylinder and its cylinder head allows to manufacture the cylinder and these using the material of lower selling price
Cylinder head, the without significantly degrading gross efficiency of the Thermal Motor；
In the case where no re-generatively cooled system according to the present invention so that the gas of higher temperature be able to enter it is high
The expander cylinder of expensive and complicated material (such as ceramic)；
The material for using low selling price is as transmitting-expansion of 15 51593 theme of patent application FR and regeneration
Thermal Motor offer higher final energy more possible than the same engine with costly and complicated material (such as ceramic)
Amount efficiency.
It should be understood that re-generatively cooled system according to the present invention is mainly for the conduct patent application FR 15 for belonging to applicant
Transmitting-expansion of 51593 theme and regeneration Thermal Motor.
However, the system can also be applied to any other engine with Bretton regeneration cycle without restriction
Expander, no matter the expander be centrifuge, positive displacement expander or any other type expander, and condition
It is the regenerator cooperation of itself and any given type.
Other features of the invention are in specification and the appurtenance for being depending directly or indirectly on independent claims
It is described in it is required that.
Re-generatively cooled system according to the present invention is designed to regeneration Thermal Motor, the regeneration Thermal Motor packet
At least one regenerative heat exchanger is included, the regenerative heat exchanger has high-pressure regeneration pipeline, and working gas is in high-pressure regeneration pipe
To preheat wherein, the working gas is compressed by compressor circulation in advance in road, while being gone out described in the pipeline
At mouthful, the gas is overheated before being introduced into the gas expander by heat source, the gas described in the gas expander
Expansion on power output shaft to do work, and then the gas is discharged in the exit of the gas expander and is introduced into institute
It states in the low pressure regeneration pipeline of regenerative heat exchanger, the gas in the pipeline by recycling its most of after-heat
It is released to the working gas recycled in the high-pressure regeneration pipeline, the system comprises:
At least one cooling chamber, fully or partially around the gas expander and/or heat source and/or by institute
The source of stating is connected to the hot gas admission line of the expander, while the chamber and/or another aspect are described swollen on the one hand
Retain gas circulation space between swollen device and/or the source and/or the pipeline；
At least one chamber inlet port is directly or indirectly connected to the outlet of the gas expander,
And the chamber inlet port can be passed through from the expander via some or all working gas of the outlet discharge
Into the gas circulation space；
At least one chamber outlet port is directly or indirectly connected to the low pressure regeneration pipeline, and described
Working gas can leave the gas circulation space by the chamber outlet port before being introduced into the low pressure pipeline.
Re-generatively cooled system according to the present invention includes chamber inlet port, and the chamber inlet port passes through chamber ingress
Pipeline is connected to the outlet of gas expander, and the effective cross section of the chamber ingress pipeline is by flow control valve regulation.
Re-generatively cooled system according to the present invention includes chamber outlet port, and the chamber outlet port passes through chamber outlet
Pipeline is connected to low pressure regeneration pipeline, and the effective cross section of the chamber outlet pipeline is by flow control valve regulation.
Re-generatively cooled system according to the present invention includes the outlet of gas expander, and the outlet passes through chamber bypass duct
It is connected to low pressure regeneration pipeline.
Re-generatively cooled system according to the present invention includes by the effective transversal of the chamber bypass duct of flow control valve regulation
Face.
Re-generatively cooled system according to the present invention includes the outside of the cooling chamber coated with thermal insulation layer.
Below in relation to appended attached drawing and the description provided as non-limiting example will allow to more fully understand the present invention, its
Feature and its available advantage:
Fig. 1 is the schematic side elevation of re-generatively cooled system according to the present invention, and the re-generatively cooled system such as can be with
It is real in the transmitting-expansion for the theme as patent application No.FR 15 51593 for belonging to applicant and regeneration Thermal Motor
It applies, and according to a modification of the system, thus the outlet of the gas expander is connected to by chamber bypass duct
The low pressure regeneration pipeline, so that the effective cross section of the bypass duct and chamber outlet pipeline is by flow control valve regulation.
Specific embodiment:
Re-generatively cooled system 100, the various details of its component, its modification and its attachment is shown in FIG. 1.
As shown in Figure 1, re-generatively cooled system 100 is provided for regeneration Thermal Motor 1, regeneration Thermal Motor 1 is wrapped
Include at least one regenerative heat exchanger 5, the regenerative heat exchanger 5 has a high-pressure regeneration pipeline 6, working gas 81 high pressure again
It recycles, is heated in the pipeline, and previously compressed by compressor 2 in raw pipeline 6.
When leaving high-pressure regeneration pipeline 6, the gas 81 is overheated before being introduced into gas expander 78 by heat source 12,
Gas expansion is in gas expander 78 to generate function on power output shaft 17.
Then, working gas 81 is discharged from gas expander 78, and is introduced into the low pressure regeneration pipeline of regenerative heat exchanger 5
In 7, its a large amount of after-heat is released in high-pressure regeneration pipeline 6 by the gas 81 and recycling in the pipeline 7
The working gas 81 of circulation.
It in the context, is clearly shown in Fig. 1, re-generatively cooled system 100 according to the present invention includes at least
One cooling chamber 79, the cooling chamber 79 is fully or partially around gas expander 78 and/or heat source 12 and/or by institute
The hot gas admission line 19 that source 12 is connected to expander 78 is stated, while the chamber 79 and/or another aspect institute on the one hand
State between expander 78 and/or the source 12 and/or the pipeline 19 reservation gas circulation space 80, working gas 81 can be
It is recycled in the space 80.
It should be noted that cooling chamber 79 can be made of stainless steel plate draw or hydroforming, and it can pass through
It welds, be threadedly coupled or rivet and realized in multiple parts assembled with one another, hereafter the chamber can be directly or indirectly attached
The component 78,12,19 surrounded to it.
It further includes at least one chamber inlet port 82 that Fig. 1, which shows re-generatively cooled system 100 according to the present invention, described
Chamber inlet port 82 is directly or indirectly connected to gas expander outlet 78, and exports via described from the expander
Some or all working gas 81 of 78 discharges can enter gas circulation space 80 by the chamber inlet port 82.
Equally, in Fig. 1, it is noted that re-generatively cooled system 100 according to the present invention further includes that at least one chamber goes out
Mouthful port 83, the chamber outlet port 83 are directly or indirectly connected to low pressure regeneration pipeline 7, and working gas 81 can be with
Gas circulation space 80 is left by the chamber outlet port 83 before being introduced into the low pressure pipeline 7.
It should be noted that, it is preferable that cooling chamber 79 in a tightening way around gas expander 78 and/or heat source 12 and/or
Hot gas enters pipeline 19, allows working gas 81 only to enter gas circulation space 80 by chamber inlet port 82, i.e.,
Alloing gas 81, only transit chamber chamber outlet end mouth 83 leaves the space 80.
According to a modified embodiment of re-generatively cooled system 100 according to the present invention as shown in Figure 1, chamber ingress
Port 82 can be connected to the outlet of gas expander 78 by chamber ingress pipeline 84, chamber ingress pipeline 84 it is effective transversal
Face is adjusted by flow control valve 85, and the flow control valve 85 can prevent according to its position, allow or limit working gas 81
Circulation in the pipeline 84.
As another modification, again as shown in Figure 1, chamber outlet port 83 can be connected by chamber outlet conduit 86
It is adjusted to the effective cross section of low pressure regeneration pipeline 7, chamber outlet pipeline 86 by flow control valve 85, flow control valve 85 can
Circulation of the working gas 81 in the chamber outlet pipeline 86 is prevented, allows or limited according to its position.
Fig. 1 also shows another modification of re-generatively cooled system 100 according to the present invention, is gas expander 78
Outlet can be connected to low pressure regeneration pipeline 7 by chamber bypass duct 87, and the chamber bypass duct 87 allows swollen from gas
The working gas 81 of the outlet discharge of swollen device 78 directly flows to low pressure regeneration pipeline 7 from the outlet, and does not move through gas
The cyclic space 80.
According to the latter variant, the effective cross section of chamber bypass duct 87 can be optionally by flow control valve 85
It adjusts, flow control valve 85 can prevent according to its position, allow or limit working gas 81 in the bypass duct 87
Circulation.
In Fig. 1, it should be noted that advantageously, the outside of cooling chamber 79 can be coated with thermal insulation layer 88, and thermal insulation layer 88 can be with
It is formed by any heat-barrier material well known by persons skilled in the art, and other than cooling chamber 79, thermal insulation layer 88 can be with
Coating constitutes the various heat pipelines and element of regeneration Thermal Motor 1.
It should be noted that in this case, providing the thermal insulation layer 88 is that any regeneration heating power that is unfavorable for starts in order to prevent
The excessive heat losses of the efficiency of machine 1.
Function of the invention:
By considering Fig. 1, the function of re-generatively cooled system 100 according to the present invention will readily appreciate that.
In order to describe this function, we will be implemented using the example of re-generatively cooled system 100 according to the present invention herein
Scheme is (when the regenerative motor 1 of the application re-generatively cooled system is by belonging on 2 25th, the 2015 conduct patents of applicant
When applying for transmitting-expansion and the regeneration Thermal Motor composition of the theme of No.FR 15 51593).
From figure 1 it appears that regenerative motor 1 includes herein two-stage compressor 2, the compressor is especially by low pressure pressure
Contracting machine 35 forms, and the low pressure compressor 35 sucks working gas 81, the low pressure via compressor inlet duct 3 from atmosphere
The outlet of compressor 35 is connected to the entrance of high pressure compressor 36 via intermediate compressor cooler 37.
Fig. 1 is shown in the exit of high pressure compressor 36, and working gas 81 is discharged to including regenerative heat exchanger 5
In high-pressure regeneration pipeline 6, in this example, the regenerative heat exchanger is counterflow heat exchanger 41 known to itself.Here vacation is answered
If working gas 81 is discharged with 20 bars of pressure and 200 degrees Celsius of temperature from high pressure compressor 36.
By being recycled in high-pressure regeneration pipeline 6, heat that working gas 81 is recycled in adjacent low pressure regeneration pipeline 7
Working gas 81 is preheating to 650 degrees Celsius of temperature.
For the sake of simplicity, the efficiency that we will be considered to regenerative heat exchanger 5 is absolutely.This means that in low pressure regeneration
The working gas 81 recycled in pipeline 7 650 degrees Celsius at a temperature of enter low pressure regeneration pipeline 7, and go out via engine
Mouthful pipeline 33 be discharged into atmosphere before 200 degrees Celsius at a temperature of leave the pipeline 7, and in high-pressure regeneration pipeline 6
The working gas 81 of circulation 200 degrees Celsius at a temperature of enter high-pressure regeneration pipeline 6 and 650 degrees Celsius at a temperature of from
It opens.
When leaving high-pressure regeneration pipeline 6, the working gas 81 is then superheated to 1400 degrees Celsius by heat source 12, according to
The example embodiment, heat source 12 are made of fuel burner 38.
When leaving the burner 38, working gas 81 is directed into gas expander by hot gas admission line 19
78, gas expander 78 is actually transmitting-expansion and the expander cylinder 13 for regenerating Thermal Motor, the expander cylinder
13 be the theme of patent application No.FR 1551593.
It should be noted that hot gas admission line 19 is preferably made of the ceramics with heat-resisting quantity, until itself and expander
The lid interconnecting piece of cylinder 14, to cover one end or the other end of expander cylinder 13.Therefore, the temperature of the pipeline 19 is kept
It is approximately equal to 1400 degrees Celsius, so that the working gas 81 recycled in the pipeline 19 maintains its temperature in its whole process.
Therefore, double to utilize as shown in Figure 1, each end of expander cylinder 13 is covered by expander cylinder head 14
It acts on expander piston 15 and limits two transmitting-expansion chamber 16.It shall yet further be noted that each cylinder head has 24 He of air inlet metering valve
It is vented metering valve 31.
Due to re-generatively cooled system 100 according to the present invention, transmitting-expansion and regeneration Thermal Motor are hot, expansions
The cylinder head of device cylinder 13 and expander cylinder 14 is maintained close to 700 degrees Celsius of temperature.This makes it possible to than ceramics
More cheap and more common material (such as stainless steel or silicon ferrite cast iron) constructs the cylinder 13 and the cylinder head 14.
For double-acting expansion device piston 15, and re-generatively cooled system 100 according to the present invention is described non-limiting
Example, double-acting expansion device piston 15 are made of silicon nitride.The average operating temperature of the piston 15 is about 800 degrees Celsius.
It should be noted that the piston 15 is connected to power output shaft 17, the dress by mechanical driving device 19 in Fig. 1
19 are set especially to be made of the connecting rod 42 hinged with crank 43.
Therefore, pressure reaches 20 bars and temperature reaches 1400 degrees Celsius of working gas 81 and passes through corresponding air inlet metering valve
24 are introduced in one or the other transmitting-expansion chamber 16.
By the aperture stayed open by air inlet metering valve 24, the gas 81 start it is slightly cooling, especially with it
When the inner wall of the lid of the expander cylinder 14 passed through and the inner wall of transmitting-expansion chamber 16 contact, in order to double there
It acts on expander piston 15 to expand, gas 81 is introduced into transmitting-expansion chamber 16.As described above, the wall is by re-generatively cooled system
System 100 maintains 700 degrees Celsius.
At this point, we will assume working gas 81 pass through cover (wash) expander cylinder 14 lid inner wall and
The wall of transmitting-expansion chamber 16 and 100 degrees Celsius of average loss.Therefore, the temperature of working gas 81 is at it from hot gas air inlet
Pipeline 19 has declined during to transmitting-expansion chamber 16, is moved to 1300 degrees Celsius from 1400 degrees Celsius.
When the desired amount of working gas 81 is efficiently introduced into transmitting-expansion chamber by corresponding air inlet metering valve 24
When in 16, the latter is closed, and double-acting expansion device piston 15 expands the gas 81.In doing so, piston 15 is collected
The function generated by the gas 81, and the function is especially passed into power output shaft 17 via connecting rod 42 and crank 43.
Once working gas 81 is expanded by double-acting expansion device piston 15, the pressure of the gas 81 is had declined
About 1 bar of absolute pressure.The temperature of this gas 81 is also in this way, the temperature of this gas 81 becomes from 1300 degrees Celsius
550 degrees Celsius.
Double-acting expansion device piston 15 has arrived at its lower dead center, and exhaust metering valve 31 is opened, and the piston 15 will
The gas 81 is discharged in chamber ingress pipeline 84, and the gas 81 is directed to chamber ingress by the chamber ingress pipeline 84
Port 82.
Then, working gas 81 enters gas circulation space 80, and is directed into chamber outlet port via the space
83.In doing so, the gas 81 covers the hot outer wall of the cylinder head of expander cylinder 13 and expander cylinder 14.It is described outer
Wall is designed to be roughened and/or be scattered with geometrical pattern completely or partially, follows to contact in the gas 81 with these walls
Forced convertion is generated when ring, so that working gas 81 more or less walks heat from the cornice.
In addition, external shape and/or the expansion of the internal geometry and/or expander cylinder 13 of cooling chamber 79
The external shape of the cylinder head of device cylinder 14 can advantageously generate channel, and the channel forces all or a few thing gas
Body 81 prolong follow from chamber inlet port 82 via gas circulation space 80 to chamber outlet port 83 path or it is several at the same
Path.
It should be understood that the dual strategy in the forced convertion of working gas 81 and pressure path makes it possible to be initially selected for
Heat is output to the region of the gas 81 from the hot outer wall of the cylinder head of expander cylinder 13 and expander cylinder 14, secondly
It selects the region by the gas 81 inswept time sequencing and third and last selection is along the path of the gas 81
The intensity of forced convertion.
Under any circumstance, during advancing in cooling chamber 79 in working gas 81, the temperature of working gas 81 will be hot
Amount extracts the temperature of gas 81 from 550 degrees Celsius from the hot outer wall of the cylinder head of expander cylinder 13 and expander cylinder 14
Taper to 650 degrees Celsius of point.In doing so and it is combined into the forced convertion of the selection of working gas 81 and the plan in path
Slightly, gas makes the equalizing temperature of the temperature of expander cylinder 13 and the cylinder head of expander cylinder 14, and the temperature maintains
Near 700 degrees Celsius.
Working gas 81 has reached its 650 degrees Celsius of new temperature, and gas 81 reaches chamber outlet port 83, and via
Chamber outlet pipeline 86 returns to low pressure regeneration pipeline 7.
From the foregoing description it is appreciated that by being recycled in low pressure regeneration pipeline 7 and via engine export
Before pipeline 33 is discharged into atmosphere, its most of heat is released to by the working gas 81 being discharged from chamber outlet port 83
The working gas 81 recycled in adjacent high-pressure regeneration pipeline 6.
Finally, and due to re-generatively cooled system 100 according to the present invention, from expander cylinder 13 and expander cylinder 14
Cylinder head in extract for by they maintain about 700 degrees Celsius temperature heat will never as dead loss dissipate.
In fact, heat is reintroduced into regeneration 1 thermodynamic cycle of Thermal Motor, needed with replacement by fuel burner
The 38 a part of heats provided, to be sent to expander cylinder 13 in working gas 81 and be subsequently introduced into transmitting-expansion chamber
Before room 16, working gas 81 is made to reach 1400 degrees Celsius of temperature.
It should be noted that chamber bypass duct 87, chamber bypass duct 87 have flow control valve 85 in Fig. 1.In Fig. 1
It shall yet further be noted that chamber outlet pipeline 86 equally has flow control valve 85.The two valves 85 constitute according to the present invention raw and cold again
But the modified embodiment of system 100, and be provided for adjusting the cylinder head of expander cylinder 13 and expander cylinder 14
Temperature.
In fact, the flow control valve 85 of chamber bypass duct 87 blocks the bypass duct if the temperature is too high
87, while the flow control valve 85 of chamber outlet pipeline 86 opens the outlet conduit 86.This, which has, is forced through them accordingly
The working gas 81 that is discharged from transmitting-expansion chamber 16 of exhaust metering valve 31 mobile pass through gas circulation space 80 and return to
The effect of low pressure regeneration pipeline 7.
On the other hand, if the temperature of the cylinder head of expander cylinder 13 and expander cylinder 14 is too low, chamber bypass
The flow control valve 85 of pipeline 87 opens bypass duct 87, at the same the flow control valve 85 of chamber outlet pipeline 86 close it is described go out
Mouth pipeline 86.This has the working gas for preventing being discharged from transmitting-expansion chamber 16 by their corresponding exhaust metering valves 31
The 81 mobile effects that low pressure regeneration pipeline 7 is returned to by gas circulation space 80.Therefore, the gas 81 via chamber by
Road pipeline 87 is returned directly to the pipeline 7.
It should be understood that in practice, flow control valve 85 is seldom fully opened or is completely closed, and the valve 85 can be protected
It holds and slightly opens, to adjust the temperature of the cylinder head of expander cylinder 13 and expander cylinder 14, without sudden change in gas
The flow velocity of the working gas 81 recycled in body circulation space 80.
It should also be understood that the adjusting of the temperature needs control device, the control device is for example passed by least one temperature
Sensor and a microcontroller composition, themselves are known, and it enables control over any kind of servo motor,
So that each motor actuated flow control valve 85 is to open or close.
According to the specific embodiment of re-generatively cooled system 100 according to the present invention, flow control valve 85 can also pass through
Mechanical linkage links together, to share identical servo motor.In this case, the linkage guarantees when the
When one valve 85 is closed, the second valve is opened, and vice versa.
It can be readily derived conclusion from the description of front, especially when the conduct patent application for implementing to belong to applicant
When transmitting-expansion of the theme of No.FR 15 51593 and regeneration Thermal Motor, re-generatively cooled system 100 according to the present invention
Bring many advantages.
As first advantage, it is no longer necessary to manufacture expander cylinder 13 and expander by the ceramic material of such as silicon carbide
The cylinder head of cylinder 14.It is well known, in fact, that this material high production cost due to its hardness is big, it is difficult to be cut with conventional
It cuts or milling tool is processed.It, can cylinder iron or stainless steel replaces this pottery due to re-generatively cooled system 100 according to the present invention
Porcelain.This greatly reduces transmitting-expansion and regenerates the manufacture selling price of Thermal Motor, this be it is conclusive, especially pair
In this engine for being able to enter automobile market.
As second advantage, since the cylinder head of expander cylinder 13 and expander cylinder 14 is colder, it is therefore possible to
It is such as quartzy using the material with low-down thermal conductivity and big compressive strength, there is pair adaptively supported to manufacture
The hollow leg of expander cylinder is acted on, this is Septembers in 2015 14th patent application No.FR 15 for belonging to applicant
58585 theme.Quartzy complete with 700 degrees Celsius temperature in fact, although quartz and 1300 degrees Celsius of temperature are incompatible
It is complete compatible.It please remember, the double acting expander cylinder of making adaptively supported that has discussed is transmitting-expansion and regeneration heating power hair
One of key improvements of motivation.
As third advantage, since the cylinder head of expander cylinder 14 maintains 700 degrees Celsius, they can be used with
The compatible pre-existing silicon nitride valve of these temperature levels.For example, this valve is to be developed by NGK company, and be always
The theme of its low-cost industrial research is especially subsidized in the frame of the 5th Europe FP5-GROWTH plan entitled
Under the background of the G3RD-CT-2000-00248 project of " LIVALVES ".
Belong to as the 4th advantage in the case where the inner wall temperature of expander cylinder 13 maintains 700 degrees Celsius nearby
The cushion segments proposed in the patent application No.FR 15 51593 of the applicant can be lasting by having to these temperature levels
The superalloy of resistance is made, and is subjected to being apparently higher than the risk of 700 degrees Celsius of temperature without described section, especially works as biography
It passs-expands and regenerate when Thermal Motor stops and before its cooling.
Transmitting-expansion and again as the 5th advantage, applied to the theme as patent application No.FR 15 51593
Heat force engine, re-generatively cooled system 100 according to the present invention make it possible to limit around expander cylinder 13 and expander
The temperature exposure of the thermal insulation layer 88 of the cylinder head of cylinder 14.In fact, 79 one side of cooling chamber is inserted between these interlayers 88,
On the other hand it is inserted between the cylinder 13 and the cylinder head.Therefore, the selling price and durability of the interlayer 88 are very
Improved in big degree.
These advantages are obtained in the case where not damaging transmitting-expansion and regenerating the final energy efficiency of Thermal Motor
's.
On the contrary, re-generatively cooled system 100 according to the present invention makes according to the existing of patent application No.FR 15 51593
Relationship enables to constitute the temperature tolerance of the material of the cylinder head of expander cylinder 13 and expander cylinder 14 and another on the one hand
On the one hand it is decoupled between the temperature for the working gas 81 for leaving fuel burner 38.
To a certain extent, due to re-generatively cooled system 100 according to the present invention, it is contemplated that fuel combustion is left in raising
The temperature of the working gas 81 of device 38, to improve transmitting-expansion and to regenerate the final efficiency of Thermal Motor, and this will not
Damage forms the temperature stability of the main element of the engine.
It should be noted that in addition to transmitting-expansion of the theme as patent application No.FR 15 51593 and regeneration heating power start
Except machine, re-generatively cooled system 100 according to the present invention can be advantageously applied for its construction and temperature characterisitic and the system
100 any other compatible regeneration Thermal Motor 1.
Therefore, a possibility that re-generatively cooled system 100 according to the present invention, is not limited to the application just described, and also answers
Understand, the description of front is merely given as examples, and is never limited in the range of the invention, by replacing by any other etc.
The execution details of jljl description, will not evade the range of the invention.
Claims (6)
1. re-generatively cooled system (100) of the one kind designed for regeneration Thermal Motor (1), the regeneration Thermal Motor include
At least one regenerative heat exchanger (5), the regenerative heat exchanger have high-pressure regeneration pipeline (6), and working gas (81) is in institute
It states and is recycled in high-pressure regeneration pipeline to preheat wherein, the working gas is compressed by compressor (2) in advance, while in institute
The exit of pipeline (6) is stated, the gas (81) is overheated before being introduced into gas expander (78) by heat source (12), described
Gas expansion described in gas expander on power output shaft (17) to do work, and then the gas (81) is swollen in the gas
The exit of swollen device (78) is discharged and is introduced into the low pressure regeneration pipeline (7) of the regenerative heat exchanger (5), the gas
(81) its most of after-heat is released in the high-pressure regeneration pipeline (6) and the circulation in the pipeline (7)
Circulation the working gas (81), the system (100) be characterized in that comprising:
At least one cooling chamber (79), fully or partially around the gas expander (78) and/or heat source (12)
And/or the source (12) are connected to the hot gas admission line (19) of the expander (78), while the chamber on the one hand
Retain gas between room (79) and/or the another aspect expander (78) and/or the source (12) and/or the pipeline (19)
The cyclic space (80)；
At least one chamber inlet port (82), be directly or indirectly connected to the gas expander (78) it is described go out
Mouthful, and institute can be passed through from the expander (78) via some or all described working gas (81) of the outlet discharge
Chamber inlet port is stated into the gas circulation space (80)；
At least one chamber outlet port (83) is directly or indirectly connected to the low pressure regeneration pipeline (7), and institute
The gas can be left by the chamber outlet port before being introduced into the low pressure pipeline (7) by stating working gas (81)
The cyclic space (80).
2. re-generatively cooled system as described in claim 1, it is characterised in that the chamber inlet port (82) is entered by chamber
Mouth pipeline (84) is connected to the outlet of the gas expander (78), and the effective cross section of the chamber ingress pipeline is by flowing
Control valve (85) is adjusted.
3. re-generatively cooled system as described in claim 1, it is characterised in that the chamber outlet port (83) passes through the chamber
Room outlet conduit (86) is connected to the low pressure regeneration pipeline (7), and the effective cross section of the chamber outlet pipeline is by flow control
Valve (85) processed is adjusted.
4. re-generatively cooled system as described in claim 1, it is characterised in that the outlet of the gas expander (78) is logical
It crosses chamber bypass duct (87) and is connected to the low pressure regeneration pipeline (7).
5. re-generatively cooled system as claimed in claim 4, it is characterised in that the chamber bypass duct (87) it is effective transversal
Face is adjusted by flow control valve (85).
6. re-generatively cooled system as described in claim 1, it is characterised in that the cooling chamber (79) be externally coated with every
Thermosphere (88).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1751571A FR3063311B1 (en) | 2017-02-27 | 2017-02-27 | REGENERATIVE COOLING SYSTEM |
| FR1751571 | 2017-02-27 | ||
| PCT/FR2018/050335 WO2018154214A1 (en) | 2017-02-27 | 2018-02-12 | Regenerative cooling system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110234863A true CN110234863A (en) | 2019-09-13 |
| CN110234863B CN110234863B (en) | 2022-03-18 |
Family
ID=58501741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880007916.6A Active CN110234863B (en) | 2017-02-27 | 2018-02-12 | Regenerative cooling system |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP3585993B1 (en) |
| JP (1) | JP7065106B2 (en) |
| KR (1) | KR102525744B1 (en) |
| CN (1) | CN110234863B (en) |
| AU (1) | AU2018225327B2 (en) |
| CA (1) | CA3053015A1 (en) |
| ES (1) | ES2874807T3 (en) |
| FR (1) | FR3063311B1 (en) |
| WO (1) | WO2018154214A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3094416B1 (en) | 2019-03-29 | 2021-03-05 | Vianney Rabhi | ARTICULATED PLENUM |
| US11187184B2 (en) | 2019-03-29 | 2021-11-30 | Vianney Rabhi | Articulated plenum for transfer-expansion-regeneration combustion engine |
| US12000357B2 (en) | 2022-02-11 | 2024-06-04 | Vianney Rabhi | Reciprocating heat engine with hot cylinder head and cold cylinder |
| FR3132737A1 (en) | 2022-02-11 | 2023-08-18 | Vianney Rabhi | ALTERNATIVE THERMAL ENGINE |
| FR3132747B1 (en) | 2022-02-11 | 2024-01-05 | Vianney Rabhi | Double-acting multi-temperature piston |
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| CN104153910A (en) * | 2014-07-15 | 2014-11-19 | 合肥工业大学 | Opened circulating Stirling engine |
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| FR1551593A (en) | 1967-05-08 | 1968-12-27 | ||
| FR1558585A (en) | 1968-01-18 | 1969-02-28 | ||
| US3995431A (en) * | 1972-08-10 | 1976-12-07 | Schwartzman Everett H | Compound brayton-cycle engine |
| DE2518554A1 (en) * | 1975-04-25 | 1976-11-11 | Deutsche Forsch Luft Raumfahrt | Continuous combustion type IC engine - has heat exchanger, combustion chamber, reciprocating rotary piston compressor and/or expander |
| US7186101B2 (en) | 1998-07-31 | 2007-03-06 | The Texas A&M University System | Gerotor apparatus for a quasi-isothermal Brayton cycle Engine |
| JP2004084564A (en) * | 2002-08-27 | 2004-03-18 | Toyota Motor Corp | Exhaust heat recovering device |
| CN101484675B (en) * | 2006-05-02 | 2012-01-25 | 燃烧室能源系统有限公司 | Indirect-fired gas turbine power plant |
| CN103748323B (en) * | 2011-06-28 | 2016-06-29 | 布莱特能源存储科技有限责任公司 | The electromotor being with burner separately and the system and method being associated |
| FR3032234B1 (en) * | 2015-01-30 | 2020-01-17 | Vianney Rabhi | THERMAL MOTOR WITH TRANSFER-RELAXATION AND REGENERATION |
-
2017
- 2017-02-27 FR FR1751571A patent/FR3063311B1/en not_active Expired - Fee Related
-
2018
- 2018-02-12 AU AU2018225327A patent/AU2018225327B2/en active Active
- 2018-02-12 CN CN201880007916.6A patent/CN110234863B/en active Active
- 2018-02-12 CA CA3053015A patent/CA3053015A1/en active Pending
- 2018-02-12 JP JP2019542714A patent/JP7065106B2/en active Active
- 2018-02-12 KR KR1020197021690A patent/KR102525744B1/en active IP Right Grant
- 2018-02-12 ES ES18707106T patent/ES2874807T3/en active Active
- 2018-02-12 WO PCT/FR2018/050335 patent/WO2018154214A1/en active Application Filing
- 2018-02-12 EP EP18707106.3A patent/EP3585993B1/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101490366A (en) * | 2006-07-21 | 2009-07-22 | Mdi-汽车发展国际股份公司 | Ambient temperature thermal energy and constant pressure cryogenic engine |
| CN102308063A (en) * | 2008-12-12 | 2012-01-04 | 里卡多英国有限公司 | Split cycle reciprocating piston engine |
| CN101988445A (en) * | 2009-07-29 | 2011-03-23 | 万国引擎知识产权有限责任公司 | Adaptive EGR cooling system |
| CN102840026A (en) * | 2011-06-23 | 2012-12-26 | 湖南大学 | System for recycling waste heat energy of exhaust gas of internal combustion engine by using air circulation |
| CN104153910A (en) * | 2014-07-15 | 2014-11-19 | 合肥工业大学 | Opened circulating Stirling engine |
Also Published As
| Publication number | Publication date |
|---|---|
| FR3063311B1 (en) | 2019-07-19 |
| EP3585993A1 (en) | 2020-01-01 |
| JP7065106B2 (en) | 2022-05-11 |
| ES2874807T3 (en) | 2021-11-05 |
| CA3053015A1 (en) | 2018-08-30 |
| KR20190116275A (en) | 2019-10-14 |
| FR3063311A1 (en) | 2018-08-31 |
| AU2018225327A1 (en) | 2019-08-22 |
| KR102525744B1 (en) | 2023-04-25 |
| WO2018154214A1 (en) | 2018-08-30 |
| JP2020509282A (en) | 2020-03-26 |
| EP3585993B1 (en) | 2021-04-07 |
| CN110234863B (en) | 2022-03-18 |
| AU2018225327B2 (en) | 2024-01-04 |
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