CN111456823B - Low-temperature cold source expansion power generation device - Google Patents
Low-temperature cold source expansion power generation device Download PDFInfo
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- CN111456823B CN111456823B CN202010423991.XA CN202010423991A CN111456823B CN 111456823 B CN111456823 B CN 111456823B CN 202010423991 A CN202010423991 A CN 202010423991A CN 111456823 B CN111456823 B CN 111456823B
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- temperature cold
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
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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
- F01C1/02—Rotary-piston machines or engines of arcuate-engagement type, i.e. with circular translatory movement of co-operating members, each member having the same number of teeth or tooth-equivalents
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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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C13/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
- F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a low-temperature cold source expansion power generation device which comprises an air preheating evaporator, an air suction automatic regulating valve, an air passage filter, an expander, a generator, a silencer, an oil separator, an oil collecting bag, an air source oil heater, an oil strainer, an oil pump, an oil fine filter, a low-temperature cold source condenser, a liquid reservoir, a liquid passage filter and a liquid pump, wherein the outlet of the air preheating evaporator, the air suction automatic regulating valve, the air passage filter, a first inlet of the expander, the outlet of the expander, the silencer, the oil separator, the oil collecting bag, the air source oil heater, the oil strainer, the oil pump, the oil fine filter and a second inlet of the expander are sequentially connected; the expansion machine is connected with the generator through a coupler; the gas outlet of the oil separator, the low-temperature cold source condenser, the liquid reservoir, the liquid path filter, the liquid pump and the inlet of the air preheating evaporator are sequentially connected. The low-temperature cold source expansion power generation device can utilize various low-temperature cold sources to generate electric energy, and is more energy-saving and environment-friendly.
Description
Technical Field
The invention relates to a low-temperature cold source expansion power generation device.
Background
In the existing low-grade waste heat power generation technology, an Organic Rankine Cycle (ORC) is most effective, and a mode of utilizing solar heat energy, various industrial waste heat, geothermal heat, ocean temperature difference and the like is generally adopted, so that certain requirements are required for waste heat utilization of the heat energy, the ORC cycle is realized by driving a high-pressure side through a high-temperature heat source, and the power generation efficiency of the ORC cycle can be generally met only at more than 90 ℃. The invention mainly aims at the cold source utilization of LNG low-temperature natural gas to realize the recovery of the low-temperature cold source.
Natural gas is a combustible gas naturally produced in a gas field and is mainly composed of methane. LNG is condensed into a liquid by cooling gaseous natural gas to-162 ℃ at atmospheric pressure. The storage and transportation space can be greatly saved after the natural gas is liquefied, and the natural gas is transported by a special ship or an oil tank truck and needs to be regasified when in use.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a low-temperature cold source expansion power generation device which drives an organic Rankine cycle from a low-temperature cold source, can utilize various low-temperature cold sources to generate electric energy, and has the advantages of higher system pressure ratio, higher power generation efficiency, energy conservation and environmental protection.
The technical scheme for achieving the purpose is as follows: the utility model provides a low temperature cold source expansion power generation facility, includes air preheating evaporimeter, automatic regulating valve, gas circuit filter, expander, generator, muffler, oil separator, collection oil pocket, air source oil heater, oily strainer, oil pump, oily smart filter, low temperature cold source condenser, reservoir, liquid way filter and liquid pump of breathing in, wherein:
The outlet of the air preheating evaporator, the air suction automatic regulating valve, the air passage filter, the first inlet of the expander, the outlet of the expander, the silencer, the oil separator, the oil collecting bag, the air source oil heater, the oil coarse filter, the oil pump, the oil fine filter and the second inlet of the expander are sequentially connected;
the expansion machine is connected with the generator through a coupler;
The gas outlet of the oil separator, the low-temperature cold source condenser, the liquid reservoir, the liquid path filter, the liquid pump and the inlet of the air preheating evaporator are sequentially connected;
the connection part of the outlet of the air preheating evaporator and the air suction automatic regulating valve is connected with the connection part of the outlet of the expander and the silencer through a bypass pipeline;
The bypass pipeline is provided with a bypass automatic regulating valve;
the inlet of the low-temperature cold source condenser is provided with a low-temperature cold source inlet pipeline, and the low-temperature cold source inlet pipeline is provided with a low-temperature cold source regulating valve.
The low-temperature cold source expansion power generation device is characterized in that the expansion machine adopts a turbine type expansion machine, a screw type expansion machine or a vortex type expansion machine.
The low-temperature cold source expansion power generation device is characterized in that the air preheating evaporator and the air source oil heater respectively adopt fin tube type heat exchangers;
The low-temperature cold source expansion power generation device is characterized in that the oil separator is a collision separator, a centrifugal separator or a filter screen separator.
According to the low-temperature cold source expansion power generation device, the oil collecting bag is located at the bottom of the oil separator.
According to the low-temperature cold source expansion power generation device, the liquid path filter is located at the bottom of the liquid storage device.
According to the low-temperature cold source expansion power generation device, the organic Rankine cycle is driven from the low-temperature cold source, the cold energy of the low-temperature cold source is recovered by adopting the low-temperature cold source condenser, the power generation efficiency and the system reliability are improved, various low-temperature cold sources can be utilized to generate electric energy, the system pressure ratio is higher, the power generation efficiency is higher, and the energy conservation and the environment friendliness are realized.
Drawings
Fig. 1 is a schematic structural diagram of a low-temperature cold source expansion power generation device of the invention.
Detailed Description
In order to enable those skilled in the art to better understand the technical scheme of the present invention, the following detailed description is provided with reference to the accompanying drawings:
Referring to fig. 1, a low-temperature cold source expansion power generation device according to a preferred embodiment of the present invention includes an air preheating evaporator 14, an air suction automatic regulating valve 19, an air path filter 20, an expander 1, a generator 2, a muffler 4, an oil separator 5, a oil collecting bag 6, an air source oil heater 18, an oil strainer 7, an oil pump 8, an oil fine filter 9, a low-temperature cold source condenser 10, a liquid reservoir 11, a liquid path filter 12 and a liquid pump 13.
The outlet of the air preheating evaporator 14, the air suction automatic regulating valve 19, the air passage filter 20, the first inlet of the expander 1, the outlet of the expander 1, the muffler 4, the oil separator 5, the oil collecting bag 6, the air source oil heater 18, the oil strainer 7, the oil pump 8, the olein filter 9 and the second inlet of the expander 1 are sequentially connected.
The expander 1 is connected with the generator 2 through a coupling 3; the gas outlet of the oil separator 5, the low-temperature cold source condenser 10, the liquid reservoir 11, the liquid path filter 12, the liquid pump 13 and the inlet of the air preheating evaporator 14 are sequentially connected; the connection a of the outlet of the air preheating evaporator 14 and the suction automatic regulating valve 19 is connected with the connection b of the outlet of the expander 1 and the silencer 4 through a bypass pipe 21; the bypass pipe 21 is provided with a bypass automatic regulating valve 17.
The inlet of the low-temperature cold source condenser 10 is provided with a low-temperature cold source inlet pipeline 15, and the low-temperature cold source inlet pipeline 15 is provided with a low-temperature cold source regulating valve 16.
The oil collection bag 6 is located at the bottom of the oil separator 5, and the liquid passage filter 12 is located at the bottom of the reservoir 11.
The expander 1 is a turbine, screw or scroll expander. The air preheating evaporator 14 and the air source oil heater 18 respectively adopt fin-tube heat exchangers; the oil separator 5 is a collision separator, a centrifugal separator, or a filter screen separator.
When the low-temperature cold source expansion power generation device is used, organic working medium gas enters the expander 1 through the air suction automatic regulating valve 19 and the air passage filter 20 to be expanded, the expander 1 rotates to drive the generator 2 to generate power through the coupling 3, the expanded organic working medium gas enters the oil separator 5 through the silencer 4, most of oil in the gas working medium is separated in the oil separator 5, the separated oil is stored in the oil collecting bag 6 and is pumped back to the expander 1 by the oil pump 8, and the oil coarse filter 7 and the oil fine filter 9 are respectively arranged at the upstream and the downstream of the oil pump 8. The gas working medium from the oil separator 5 enters the low-temperature cold source condenser 10 to be condensed into supercooled liquid and then enters the liquid storage 11, the liquid working medium is pumped to the air preheating evaporator 14 by the liquid pump 13 through the liquid path filter 12, and the liquid working medium is sucked into the expander 1 after being heated by the air preheating evaporator 14, so that one cycle is completed. The bypass automatic regulating valve 17 is used for regulating the pressure difference before and after the expander 1 during starting. When the expansion generator is in operation, the air-oil heater 18 turns on the fan for using air to heat the oil in the oil-collecting bag 6. The low-temperature cold source regulating valve 16 regulates the cold source flow in the low-temperature cold source inlet pipeline 15 by opening the valve so as to ensure the pressure in the low-temperature cold source condenser 10. The organic Rankine cycle is driven by the low-temperature cold source, the cold energy of the low-temperature cold source is recovered by adopting the low-temperature cold source condenser, the power generation efficiency and the system reliability are improved,
In summary, the low-temperature cold source expansion power generation device can utilize various low-temperature cold sources to generate electric energy, has higher system pressure ratio, higher power generation efficiency, and is more energy-saving and environment-friendly.
It will be appreciated by persons skilled in the art that the above embodiments are provided for illustration only and not for limitation of the invention, and that variations and modifications of the above described embodiments are intended to fall within the scope of the claims of the invention as long as they fall within the true spirit of the invention.
Claims (6)
1. The utility model provides a low temperature cold source expansion power generation facility, its characterized in that includes air preheating evaporator, automatic regulating valve that breathes in, gas circuit filter, expander, generator, muffler, oil separator, collection oil pocket, air source oil heater, oily strainer, oil pump, oily smart filter, low temperature cold source condenser, reservoir, liquid way filter and liquid pump, wherein:
The outlet of the air preheating evaporator, the air suction automatic regulating valve, the air passage filter, the first inlet of the expander, the outlet of the expander, the silencer, the oil separator, the oil collecting bag, the air source oil heater, the oil coarse filter, the oil pump, the oil fine filter and the second inlet of the expander are sequentially connected;
the expansion machine is connected with the generator through a coupler;
The gas outlet of the oil separator, the low-temperature cold source condenser, the liquid reservoir, the liquid path filter, the liquid pump and the inlet of the air preheating evaporator are sequentially connected;
the connection part of the outlet of the air preheating evaporator and the air suction automatic regulating valve is connected with the connection part of the outlet of the expander and the silencer through a bypass pipeline;
The bypass pipeline is provided with a bypass automatic regulating valve;
the inlet of the low-temperature cold source condenser is provided with a low-temperature cold source inlet pipeline, and the low-temperature cold source inlet pipeline is provided with a low-temperature cold source regulating valve.
2. The cryogenic cold source expansion power generation device of claim 1, wherein the expander is a turbine, screw or scroll expander.
3. The low-temperature cold source expansion power generation device according to claim 1, wherein the air preheating evaporator and the air source oil heater respectively adopt fin-tube heat exchangers.
4. The cryogenic cold source expansion power generation device of claim 1, wherein the oil separator is a collision separator, a centrifugal separator, or a filter screen separator.
5. The cryogenic cold source expansion power generation device of claim 1, wherein the oil collection pocket is located at the bottom of the oil separator.
6. The cryogenic cold source expansion power generation device of claim 1, wherein the liquid path filter is located at the bottom of the liquid reservoir.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010423991.XA CN111456823B (en) | 2020-05-19 | 2020-05-19 | Low-temperature cold source expansion power generation device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010423991.XA CN111456823B (en) | 2020-05-19 | 2020-05-19 | Low-temperature cold source expansion power generation device |
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| CN111456823A CN111456823A (en) | 2020-07-28 |
| CN111456823B true CN111456823B (en) | 2024-08-27 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN212406840U (en) * | 2020-05-19 | 2021-01-26 | 宝莲华新能源技术（上海）股份有限公司 | Low-temperature cold source expansion power generation device |
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| CN1139182A (en) * | 1995-06-23 | 1997-01-01 | 霍占满 | Power producing method and equipment using low-temp energy source |
| CN109826684B (en) * | 2019-01-03 | 2022-05-10 | 上海海事大学 | Low-pressure organic Rankine cycle power generation system capable of efficiently utilizing low-temperature cold energy |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN212406840U (en) * | 2020-05-19 | 2021-01-26 | 宝莲华新能源技术（上海）股份有限公司 | Low-temperature cold source expansion power generation device |
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