CN204186426U - A kind of isothermal expansion power system - Google Patents
A kind of isothermal expansion power system Download PDFInfo
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- CN204186426U CN204186426U CN201420625838.5U CN201420625838U CN204186426U CN 204186426 U CN204186426 U CN 204186426U CN 201420625838 U CN201420625838 U CN 201420625838U CN 204186426 U CN204186426 U CN 204186426U
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- pressurized gas
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- 239000007788 liquid Substances 0.000 claims abstract description 67
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 239000007789 gas Substances 0.000 claims description 67
- 239000002918 waste heat Substances 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 5
- 239000000446 fuel Substances 0.000 claims description 5
- 239000002440 industrial waste Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 11
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 6
- 239000007921 spray Substances 0.000 description 5
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 239000006260 foam Substances 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 description 2
- 230000003416 augmentation Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 210000000416 exudates and transudate Anatomy 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000000889 atomisation Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model relates to a kind of isothermal expansion power system, comprises piston, cylinder, connecting rod, pressurized gas working medium storage tank, heat medium storage tank and heat exchanger; Liquid in heat medium storage tank is heated by external heat source; Pressurized gas and liquid is stored in pressurized gas working medium storage tank, when system works, pressurized gas enter cylinder from high pressure storage tank, liquid pump work enters pressurized gas working medium storage tank by the liquid absorbed in flow container, makes the pressure that pressurized gas working medium storage tank remains constant; Pressurized gas enter the acting of air cylinder driven piston, and meanwhile, the high temperature heating medium from heat medium storage tank enters cylinder with vaporific or foam-like, realizes Quasi-isothermal expansion process, thus improve the leaving momentum of unit working medium.
Description
Technical field
The utility model relates to a kind of isothermal expansion power system, and the system of being specially comprises an isothermal expansion machine, flow container, a high pressure storage tank and a water pump; Liquid in flow container is heated by external heat source; Store high-pressure air and liquid in high pressure storage tank, when system works, high-pressure air enter isothermal expansion machine from high pressure storage tank, liquid pump work enters high pressure storage tank by the liquid absorbed in flow container, makes the pressure that high pressure storage tank remains constant; High-pressure air enters decompressor and drives decompressor acting, and meanwhile, the high-temp liquid from flow container enters expander cylinder with vaporific or foam-like, realizes Quasi-isothermal expansion process, thus improves the leaving momentum of unit working medium.
Background technique
Along with the development of technology and people are to the concern of environment, researcher has carried out the research of various low-carbon (LC) power system, make its more low-carbon environment-friendly, better utilize extraneous waste heat and larger output to compare merit.Isothermal expansion machine can obtain larger output work and the system effectiveness of Geng Gao, day by day attract attention, research field tentatively relates to the fields such as isothermal diesel engine, isothermal compression air energy storage systems and piston compressor, for improve unit working medium go out merit amount and efficiency of energy utilization provides new scheme.The key realizing isothermal expansion is the augmentation of heat transfer of inflation process.Facts have proved, adopt the mode of water or air heating expanding gas outward at cylinder wall, effect is very not obvious, thus cause actual expansion process close to adiabatic expansion, not only reduce the system effectiveness of decompressor, and easily cause exhaust port frosting, affect the normal operation of machine.And the method for operation of the multistage expansion of industrial normal employing, inter-stage heating, then inevitably can cause that system architecture is complicated, cost increases and the problem such as additional power consumption increase.
In addition, there is a large amount of waste heats in the every field such as industry, comprises engine fuel waste heat, industrial waste heat, solar energy heating etc., if can realize the utilization to these heats, can improve the temperature of isothermal expansion machine further, and merit is compared in the output increasing system.
In common application, adopt constant volume gas holder, along with compressed-air actuated consumption, the pressure in gas holder reduces, and will affect the working condition of decompressor, by introducing hydraulic system, decompressor being worked under a constant, can make the work of system high efficiency.
Therefore, propose isothermal expansion system in herein, the constant pressure air feeding of decompressor and nearly isothermal expansion can be realized, thus increase the output work of unit working medium.
Model utility content
For overcoming the shortcoming and defect of prior art, the utility model discloses the utility model and relate to a kind of power system utilizing hydraulic pressure to realize isothermal expansion, the heat medium in heat medium storage tank is wherein heated by external heat source; Pressurized gas and liquid is stored in high pressure storage tank, when system works, pressurized gas enter cylinder from pressurized gas working medium storage tank, liquid pump work enters pressurized gas working medium storage tank by the liquid absorbed in heat medium storage tank, makes the pressure that pressurized gas working medium storage tank remains constant; Pressurized gas enter the acting of air cylinder driven piston, and meanwhile, the high-temp liquid from heat medium storage tank enters cylinder with vaporific or foam-like, realizes Quasi-isothermal expansion process, thus improve the leaving momentum of unit working medium.
For realizing above-mentioned technical purpose, the technological scheme that the utility model adopts is: a kind of isothermal expansion power system, comprises piston, cylinder, connecting rod, pressurized gas working medium storage tank, heat medium storage tank and heat exchanger, it is characterized in that,
--described cylinder head is equipped with suction valve and annular ejector, and described suction valve is communicated with pressurized gas working medium storage tank, and described annular ejector is communicated with heat medium storage tank;
--on the sidewall of the described cylinder of the lower position near described piston, be provided with exhaust port, outer wall around described cylinder forms one and closes exhaust buffer cavity, described exhaust buffer cavity is communicated with cylinder by the exhaust port on cylinder sidewall, liquid port is provided with in the bottom of described exhaust buffer cavity or on the sidewall of bottom, described liquid port is positioned at below described exhaust port in the height direction, be provided with gas outlet at the top of described exhaust buffer cavity or on the sidewall at top, described gas outlet is positioned at above described exhaust port in the height direction;
--be arranged on the liquid outlet I of described heat medium tank bottom by the hot-fluid side of liquid line through described heat exchanger and the inlet communication of described annular ejector;
--be arranged on the pressurized gas outlet at described pressurized gas working medium storage tank top by the cold flow side of gas piping through described heat exchanger and the inlet communication of described suction valve.
Preferably, the liquid line between described liquid outlet I and heat exchanger is provided with liquid pump I.
Preferably, external heat pipeline established by described heat medium storage tank, and described external heat pipeline one end is communicated with the bottom of described heat medium storage tank, and the other end is communicated with the top of described heat medium storage tank, and described external heat pipeline is provided with heating source.Further, described heating source is the solar heat of the waste heat of engine fuel, industrial waste heat or collection.
Preferably, described liquid port and a liquid of the described exhaust buffer cavity tank that confluxes is communicated with.Further, the conflux outlet of tank of described liquid is communicated with the liquid-inlet of described pressurized gas working medium storage tank with the fluid connection hole of described heat medium storage tank through threeway parts.
Further, the pipeline between the liquid-inlet of described threeway parts and described pressurized gas working medium storage tank is provided with liquid pump II.
Further, be interconnected by a liquid line being provided with pressure-limit valve bottom described heat medium tank bottom and pressurized gas working medium storage tank.
Preferably, described suction valve is arranged on the central position of cylinder head, and described annular ejector is arranged on around described suction valve.
Preferably, the top surface of described piston is plane or has a downward gradient.
Preferably, the top of described piston is provided with the push rod that can trigger INO or closedown.
Isothermal expansion power system of the present utility model, is equipped with suction valve and annular ejector in cylinder head, is used for from the heat medium atomization of heat medium storage tank or foamed inject cylinder.When piston moves near top dead center, suction valve is opened by the push rod be connected with piston, and pressurized gas enter cylinder immediately, and after mixing with vaporific or foam-like heat medium, driven plunger is done work; Meanwhile, vaporific or foam-like heat medium constantly gathers at piston face.When piston moves to lower, the exhaust port on cylinder wall is opened, and the heat medium that the gas after expansion and piston face gather enters buffer cavity automatically by the exhaust port of cylinder wall; Piston stroking upward subsequently, gas remaining in compression cylinder, until suction valve is opened, starts next circulation.In buffer cavity, heat medium is separated with gas working medium, and heat medium is discharged by liquid port; Gas working medium is discharged by the gas outlet on the upside of buffer cavity.Heat medium enters liquid and to conflux tank, and is back to wet tank or is imported in pressurized gas working medium storage tank by pump.Heat medium in heat medium storage tank is heated by heating source, this part heat medium storage tank is forced into certain pressure by liquid pump, enter heat exchanger preheating from the pressurized gas in pressurized gas working medium storage tank, then sprayed in cylinder by the sparger of cylinder head.Wherein the energy of heating source is from the heat of the solar energy of the waste heat of engine fuel, industrial waste heat or collection, what store in pressurized gas working medium storage tank is pressurized gas working medium, the i.e. air inlet source of decompressor and highly pressurised liquid, this part liquid is the heat medium of liquid after liquid pump pressurization in decompressor exudate and a part of normal heating medium reservoirs, and by pumping into a certain amount of heat medium in pressurized gas working medium storage tank, to maintain the gas pressure of pressurized gas working medium storage tank inside constant.Liquid in heat medium storage tank storage tank is the source of the heat medium sprayed in cylinder, and before spraying into cylinder, first this part liquid pressurizeed by liquid pump, then first in heat exchanger with pressurized gas heat exchange, eventually spray into cylinder.When the pressure in pressurized gas working medium storage tank is higher than setting pressure, liquid is wherein back in normal heating medium reservoirs by a pressure-limit valve.It should be noted that, if heat medium sprays in cylinder with the form of foam, then add a kind of special additive in heat medium, as propylene glycol, low boiling alkane or fluorocarbons etc.
Compared with the existing technology, isothermal expansion power system of the present utility model has significant effect: (1) is passed through directly to the vaporific or foam-like heat medium in a large number of spray in expander cylinder, make gas augmentation of heat transfer in inflation process, because liquid heating medium has larger specific heat capacity, when its be vaporific or foam-like time there is larger heat exchange area, inflation process can be made to depart from adiabatic process significantly, obtain " Quasi-isothermal expansion " process close to isothermal, thus realize isothermal release can, improve unit working medium output work and its working efficiency of decompressor of the same type, compressed-air energy-storage system can be applied to, Organic Rankine Cycle, supercritical CO
2the power take-off of the various system such as power cycle, waste heat recycling system, (2) compared with traditional multi-stage positive displacement decompressor, isothermal expansion system of the present utility model can realize UTILIZATION OF VESIDUAL HEAT IN, constant pressure air feeding and nearly isothermal expansion, thus considerably improve unit working medium output work, isothermal efficiency, reduce the size of FU power, cost and additional power consumption, finally reach higher system effectiveness, the power equipment for Development of Novel provides new feasible program.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
For making the purpose of this utility model, technological scheme and advantage clearly understand, to develop simultaneously embodiment referring to accompanying drawing, the utility model is further described.
Fig. 1 is the structural representation of isothermal expansion power system of the present utility model.This system comprises piston 5, cylinder 3, connecting rod, pressurized gas working medium storage tank 22, heat medium storage tank 21 and heat exchanger 24, piston 5 is slidably mounted in cylinder 3, connecting rod comprises connecting rod 12 and crank 13, connecting rod 12 one end is connected with piston 5, the other end is connected with crank 13, suction valve 2 and annular ejector 4 are equipped with in cylinder 3 top, the suction port 1 of suction valve 2 is communicated with pressurized gas working medium storage tank 22, annular ejector 4 is communicated with heat medium storage tank 21, in order to the heat medium after heating is atomized or forms foam and inject in cylinder 3 with certain mass flow rate, the sidewall of the cylinder 3 of the lower position near piston 5 is provided with exhaust port 8, outer wall around cylinder 3 forms one and closes exhaust buffer cavity 9, exhaust buffer cavity 9 is communicated with cylinder 3 by the exhaust port 8 on cylinder 3 sidewall, be vented the bottom of buffer cavity 9 or be provided with liquid port 10 on the sidewall of bottom, liquid port 10 is positioned at below exhaust port 8 in the height direction, be vented the top of buffer cavity 9 or be provided with gas outlet 11 on the sidewall at top, gas outlet 11 is positioned at above exhaust port 8 in the height direction, be arranged on liquid outlet I bottom heat medium storage tank 21 by the hot-fluid side of liquid line through heat exchanger 24 and the inlet communication of annular ejector 4, be arranged on the pressurized gas outlet at pressurized gas working medium storage tank 22 top by the cold flow side of gas piping through heat exchanger 24 and the inlet communication of suction valve 2.
When piston 5 moves near top dead center, suction valve 2 is opened by the push rod 7 be connected with piston 5, and pressurized gas enter cylinder 3 immediately, and after mixing with vaporific or foam-like heat medium, driven plunger 5 is done work; Meanwhile, vaporific or foam-like heat medium constantly gathers on piston 5 surface.When piston 5 moves to lower, the exhaust port 8 on cylinder wall is opened, and the liquid that the gas after expansion and piston face gather enters buffer cavity 9 automatically by the exhaust port 8 of cylinder wall; Up with back piston 5, gas remaining in compression cylinder, until suction valve 2 is opened, starts next circulation.In buffer cavity 9, liquid working substance is separated with gas working medium, and liquid working substance is discharged by liquid port 10; Gas working medium is discharged by the exhaust port 11 on the upside of buffer cavity 9.Heat medium enters liquid and to conflux tank 14, and is back to heat medium storage tank 21 or is imported in pressurized gas working medium storage tank 22 by pump 19.Liquid in heat medium storage tank 21 is heated by heating source 18, the storage of this part heat medium is forced into certain pressure by liquid pump 20, enter heat exchanger 24 preheating from the pressurized gas in pressurized gas working medium storage tank 22, then sprayed in cylinder 3 by the sparger 4 of cylinder head.Wherein the energy of heating source 18 is from the heat of the solar energy of the waste heat of engine fuel, industrial waste heat or collection, what store in pressurized gas working medium storage tank 22 is pressurized gas, the i.e. air inlet source of decompressor and highly pressurised liquid, this part heat medium is the liquid of liquid after liquid pump 19 pressurizes in decompressor exudate and a part of normal heating medium reservoirs 21, and by pumping into a certain amount of liquid in pressurized gas working medium storage tank 22, to maintain the gas pressure of tank inside constant.Liquid in heat medium storage tank 21 is the source of the heat medium sprayed in cylinder, and before spraying into cylinder, first this part heat medium is pressurizeed by liquid pump 20, then first in heat exchanger 24 with pressurized gas heat exchange, eventually spray into cylinder 3.When the pressure in pressurized gas working medium storage tank 22 is higher than setting pressure, heat medium is wherein back in atmospheric storage tank 21 by a pressure-limit valve 23.It should be noted that, if heat medium sprays in cylinder with the form of foam, then add a kind of special additive in heat medium, as propylene glycol, low boiling alkane or fluorocarbons etc.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within scope of the present utility model.
Claims (10)
1. an isothermal expansion power system, comprises piston, cylinder, connecting rod, pressurized gas working medium storage tank, heat medium storage tank and heat exchanger, it is characterized in that:
--described cylinder head is equipped with suction valve and annular ejector, and described suction valve is communicated with pressurized gas working medium storage tank, and described annular ejector is communicated with heat medium storage tank;
--on the sidewall of the described cylinder of the lower position near described piston, be provided with exhaust port, outer wall around described cylinder forms one and closes exhaust buffer cavity, described exhaust buffer cavity is communicated with cylinder by the exhaust port on cylinder sidewall, liquid port is provided with in the bottom of described exhaust buffer cavity or on the sidewall of bottom, described liquid port is positioned at below described exhaust port in the height direction, be provided with gas outlet at the top of described exhaust buffer cavity or on the sidewall at top, described gas outlet is positioned at above described exhaust port in the height direction;
--be arranged on the liquid outlet I of described heat medium tank bottom by the hot-fluid side of liquid line through described heat exchanger and the inlet communication of described annular ejector;
--be arranged on the pressurized gas outlet at described pressurized gas working medium storage tank top by the cold flow side of gas piping through described heat exchanger and the inlet communication of described suction valve.
2. power system according to claim 1, is characterized in that, the liquid line between described liquid outlet I and heat exchanger is provided with liquid pump I.
3. power system according to claim 1, it is characterized in that, external heat pipeline established by described heat medium storage tank, described external heat pipeline one end is communicated with the bottom of described heat medium storage tank, the other end is communicated with the top of described heat medium storage tank, and described external heat pipeline is provided with heating source.
4. power system according to claim 3, is characterized in that, described heating source is the solar heat of the waste heat of engine fuel, industrial waste heat or collection.
5. power system according to claim 1, is characterized in that, described liquid port and the liquid of the described exhaust buffer cavity tank that confluxes is communicated with.
6. power system according to claim 5, is characterized in that, the conflux outlet of tank of described liquid is communicated with the liquid-inlet of described pressurized gas working medium storage tank with the fluid connection hole of described heat medium storage tank through threeway parts.
7. power system according to claim 6, is characterized in that, the pipeline between the liquid-inlet of described threeway parts and described pressurized gas working medium storage tank is provided with liquid pump II.
8. power system according to claim 7, is characterized in that, is interconnected bottom described heat medium tank bottom and pressurized gas working medium storage tank by a liquid line being provided with pressure-limit valve.
9. power system according to claim 1, is characterized in that, described suction valve is arranged on the central position of cylinder head, and described annular ejector is arranged on around described suction valve.
10. power system according to claim 1, is characterized in that, the top surface of described piston is plane or has a downward gradient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420625838.5U CN204186426U (en) | 2014-10-27 | 2014-10-27 | A kind of isothermal expansion power system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420625838.5U CN204186426U (en) | 2014-10-27 | 2014-10-27 | A kind of isothermal expansion power system |
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| CN204186426U true CN204186426U (en) | 2015-03-04 |
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| CN201420625838.5U Active CN204186426U (en) | 2014-10-27 | 2014-10-27 | A kind of isothermal expansion power system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190117 Address after: 100185 No. 301-63, No. 3, Building A 1, Eastern District of Qinghe Jiayuan, Haidian District, Beijing Patentee after: ZHONGCHU GUONENG (BEIJING) TECHNOLOGY Co.,Ltd. Address before: 100190 North four Ring West Road, Haidian District, Beijing, A202 Patentee before: Institute of Engineering Thermophysics, Chinese Academy of Sciences |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231020 Address after: No. 603, Floor 6, Building 2, Yard 2, Yongjie South Road, Haidian District, Beijing 100094 Patentee after: Huake Super Energy (Beijing) Energy Technology Co.,Ltd. Address before: 100185 No. 301-63, No. 3, Building A 1, Eastern District of Qinghe Jiayuan, Haidian District, Beijing Patentee before: ZHONGCHU GUONENG (BEIJING) TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |