CN106285803A - Natural gas overbottom pressure cold energy cogeneration unit - Google Patents
Natural gas overbottom pressure cold energy cogeneration unit Download PDFInfo
- Publication number
- CN106285803A CN106285803A CN201610838869.2A CN201610838869A CN106285803A CN 106285803 A CN106285803 A CN 106285803A CN 201610838869 A CN201610838869 A CN 201610838869A CN 106285803 A CN106285803 A CN 106285803A
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- China
- Prior art keywords
- pressure
- natural gas
- cold energy
- low
- cogeneration unit
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/18—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids characterised by adaptation for specific use
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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
-
- 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
-
- 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
- F01K7/00—Steam engine plants characterised by the use of specific types of engine; Plants or engines characterised by their use of special steam systems, cycles or processes; Control means specially adapted for such systems, cycles or processes; Use of withdrawn or exhaust steam for feed-water heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M1/00—Frames or casings of engines, machines or apparatus; Frames serving as machinery beds
- F16M1/04—Frames or casings of engines, machines or apparatus; Frames serving as machinery beds for rotary engines or similar machines
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a kind of natural gas overbottom pressure cold energy cogeneration unit, utilize twin-screw expander as power output part, utilize heat exchange of heat pipe as cold energy recovery part, utilize the natural gas overbottom pressure cold energy combined generating system that pressure-bearing tank seals.Present system can utilize the overbottom pressure energy and cold energy generation that natural gas produces in blood pressure lowering temperature-fall period, improves efficiency of energy utilization.Simultaneously by using pressure-bearing tank overall package, reliably solve system leak problem, make natural gas completely cut off with outside air, eliminate the fire explosion hidden danger that combustible gas leakage causes.Secondly, pressure-bearing tank is used to seal the requirement of the bearing capacity that can reduce opposite heat tube heat exchanger, oil eliminator, and pipeline.Secondly, utilize pressure-bearing tank can play certain Noise Reduction simultaneously, reduce noise pollution.As seen from Figure 2, pressure-bearing potting dress is used to make system appearance more succinct.
Description
Technical field
The present invention relates to a kind of electricity generation system, utilize natural gas top pressure power generation and natural air cooling more particularly, to one
Can electricity generation system.
Background technology
The environmental pollution that energy shortage and energy-consuming cause has become restriction global economy and has increased the weight with social progress
Want obstacle.With the high speed development of national economy, China has become second-biggest-in-the-world energy-consuming state, and energy-consuming is caused
What problem of environmental pollution was the most serious has influence on daily life, so natural gas is as the energy of a kind of relative clean,
Increasingly being paid attention to by the Chinese government, at present, natural gas is widely applied to generating, motor vehicle fuel, industrial chemicals, civilian combustion
The fields such as material, and its consumption is with the speed increment of annual 5%-10%, along with the implementation of China " coal changes combustion " policy, this
Speed also can be accelerated.
Natural gas is Room-temperature low-pressure in the state of user side, so natural gas will be through decompression before being transported to user
Operation, the most the most frequently used is just by expenditure and pressure, and while decompression, owing to natural gas expands, temperature occurs significantly
Decline, produce more high-grade cold energy, due to the restriction of conveyance conduit, the also factor such as the demand of user side, need low
Temperature heated by natural gas is to of a relatively high temperature, so in the processing procedure of this natural gas, two parts energy has been lost, first
Point being the pressure energy of natural gas, the overbottom pressure energy being namely described below, Part II is the heat energy that heated natural gas consumes.
Summary of the invention
In order to solve the problems of the prior art, the present invention provides a kind of natural gas overbottom pressure cold energy cogeneration unit, solves
The problem of energy loss in the processing procedure of natural gas in prior art of determining.
The technical scheme is that a kind of natural gas overbottom pressure cold energy cogeneration unit, high-pressure natural gas is at twin screw
Expansion work in top pressure power generation decompressor, becomes the state of low-temp low-pressure, and the decompressor of twin screw top pressure power generation simultaneously is expansion work
Being changed into mechanical power drives top pressure power generation magneto to rotate, and exports electric energy, and low-pressure low-temperature natural gas enters heat pipe heat exchanging
Device, with cryogenic gaseous working medium heat exchange, low-temp low-pressure natural gas is heated to low normal pressure and temperature state, is delivered to user, simultaneously low temperature
The organic generating working medium of gaseous state is condensed into low-pressure liquid, through working medium pump supercharging, with the state of high-pressure liquid enter vaporizer with
Thermal source heat exchange, becomes high-pressure gaseous working medium, enters the acting of twin screw cold energy generation expander, becomes low-pressure gaseous working medium,
Completing an organic Rankine bottoming cycle, the decompressor of twin screw cold energy generation simultaneously is changed into mechanical power expansion work, drives cold energy to send out
Electricity magneto rotates, and exports electric energy.
The shell of described generating set uses pressure-bearing jar structure to ensure the sealing of whole system.Described pressure-bearing tank end
Mouth all uses flange-interface.Vertical oil-gas separator, the end cap on vertical oil-gas separator top it is provided with in described pressure-bearing tank
It is arranged on pressure-bearing tank.
It is provided with baffle plate in described heat exchange of heat pipe.
Described working medium pump uses rustless steel centrifugal multistage pump multiple centrifugal pump.
The invention has the beneficial effects as follows: the natural gas overbottom pressure cold energy cogeneration unit of the present invention utilizes twin-screw expander
As power output part, utilizing heat exchange of heat pipe as cold energy recovery part, the natural gas overbottom pressure utilizing pressure-bearing tank to seal is cold
Can combined generating system, it is possible to utilize overbottom pressure energy and cold energy generation, the raising energy that natural gas produces in blood pressure lowering temperature-fall period
Utilization ratio.Simultaneously by using pressure-bearing tank overall package, reliably solve system leak problem, make natural gas empty with the external world
Air bound is exhausted, eliminates the fire explosion hidden danger that combustible gas leakage causes.Secondly, use the sealing of pressure-bearing tank can reduce opposite heat tube to change
The requirement of the bearing capacity of hot device, oil eliminator, and pipeline.Secondly, utilize pressure-bearing tank can play certain noise reduction simultaneously
Effect, reduces noise pollution.As seen from Figure 2, pressure-bearing potting dress is used to make system appearance more succinct.
Accompanying drawing explanation
Fig. 1 is natural gas overbottom pressure cold energy combined generating system flow chart of the present invention；
Fig. 2 is natural gas overbottom pressure cold energy cogeneration unit outline drawing；
Fig. 3 is the cut-away view of natural gas overbottom pressure cold energy combined generating system；
Wherein: 1 twin screw top pressure power generation decompressor；2 top pressure power generation magnetoes；3 heat exchange of heat pipes；4 working medium pumps；
5 twin screw cold energy generation decompressors；6 cold energy generation magnetoes；7 vaporizers；8 gear pumps；9 oil eliminators；10 pressure-bearings
Tank；11. gas outlets；12. high-pressure gaseous organic working medium imports；13. liquid organic working medium outlets；14. anti-riot binding posts；
15. Imported gas；16. oil point filter element replacing holes.
Detailed description of the invention
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
In original natural gas blood pressure lowering heating process, high-pressure natural gas (0.8-1.3Mpa) is depressurized to low pressure by choke valve
State (0.2MPa), temperature drops to low temperature (-45 DEG C) from higher temperature (15 DEG C) simultaneously, is then passed through firing equipment, temperature
It is promoted to higher temperature (more than 10 DEG C).
Overbottom pressure in the high-pressure natural gas processing procedure of present invention 0.8-1.3Mpa can implement generating with cold energy, it is achieved energy
The cascade utilization in source, improves the situation of energy waste in original natural gas processing operation.Natural gas overbottom pressure cold energy cogeneration
System flow chart, as it is shown in figure 1, high-pressure natural gas expansion work in twin screw top pressure power generation decompressor 1, becomes low-temp low-pressure
State, 1 expansion work of the decompressor of twin screw top pressure power generation simultaneously be changed into mechanical power drive top pressure power generation magneto 2
Rotating, export electric energy, low-pressure low-temperature natural gas enters heat exchange of heat pipe 3, with cryogenic gaseous working medium heat exchange, low-temp low-pressure natural gas
Being heated to low normal pressure and temperature state, be delivered to user, the organic generating working medium of cryogenic gaseous is condensed into low-pressure liquid simultaneously, passes through
Working medium pump 4 supercharging, enters vaporizer 7 and thermal source heat exchange with the state of high-pressure liquid, becomes high-pressure gaseous working medium, enter twin screw
Cold energy generation decompressor 5 expansion work, becomes low-pressure gaseous working medium, completes organic Rankine bottoming cycle, simultaneously a twin screw cold energy
Generating 5 expansion works of decompressor are changed into mechanical power, drive cold energy generation magneto 6 to rotate, export electric energy.
The outline drawing of the natural gas overbottom pressure cold energy cogeneration unit that the present invention relates to is as in figure 2 it is shown, this patent uses
Pressure-bearing tank 10 structure ensures the sealing of whole system, in case at rotatable parts axle envelope, the natural gas of leakage enters ring in system
Border, initiation fire or blast.Pressure-bearing tank 10 also acts as the effect of noise reduction simultaneously.Tank body port all uses flange-interface, can compare
Easier realize sealing.Meanwhile, natural gas flows in pressure-bearing tank, washes away tank inner part, reaches the effect of cooling.This is specially
Profit uses heat exchange of heat pipe 3 to be used as cold energy absorption piece, adds baffle plate, natural gas is varied multiple times in heat in heat exchange of heat pipe
The flow direction of heat exchange of heat pipe 3, increases the flow process of natural gas.The present invention uses vertical oil-gas separator 9, in the system that this patent is mentioned
In, during the filter element more changed oil point, only need the end cap on vertical oil-gas separator 9 top on general tank body, it is convenient to change.This patent
The cut-away view of the natural gas overbottom pressure cold energy combined generating system related to is as shown in Figure 3.Working medium pump 4 use rustless steel multistage from
Heart pump.
As a example by 50kW unit in the series generator group that the present invention is covered, when the parameter of natural gas is 1.3Mpa
(gauge pressure), 15 DEG C, 5.8m3During/min, 50kW can be produced per hour ● the electric energy of h, through the natural gas state of this system
Become 0.2Mpa (gauge pressure), more than 10 DEG C.All processes will not destroy the requirement of original production process, reduces disappearing of high-grade energy
Consumption, reduces environmental pollution and thermal pollution, has reached the target of energy-saving and emission-reduction.
The foregoing is only presently preferred embodiments of the present invention, protection scope of the present invention is not limited to above-mentioned case study on implementation,
All impartial changes done according to scope of the present invention patent and modification, all should belong to the covering scope of the present invention, and the application is wanted
The protection domain asked is as shown in the application claims.
Claims (6)
1. a natural gas overbottom pressure cold energy cogeneration unit, it is characterised in that high-pressure natural gas is swollen in twin screw top pressure power generation
Expansion work in swollen machine, becomes the state of low-temp low-pressure, and the decompressor of twin screw top pressure power generation simultaneously is changed into machinery expansion work
Merit drives top pressure power generation magneto to rotate, and exports electric energy, and low-pressure low-temperature natural gas enters heat exchange of heat pipe, with low wet
State working medium heat exchange, low-temp low-pressure natural gas is heated to low normal pressure and temperature state, is delivered to user, the organic generating of cryogenic gaseous simultaneously
Working medium is condensed into low-pressure liquid, through working medium pump supercharging, enters vaporizer and thermal source heat exchange with the state of high-pressure liquid, becomes
High-pressure gaseous working medium, enter twin screw cold energy generation expander acting, become low-pressure gaseous working medium, complete one organic bright
Agreeing circulation, the decompressor of twin screw cold energy generation simultaneously is changed into mechanical power expansion work, drives cold energy generation magneto
Rotate, export electric energy.
Natural gas overbottom pressure cold energy cogeneration unit the most according to claim 1, it is characterised in that outside described generating set
Shell uses pressure-bearing jar structure to ensure the sealing of whole system.
Natural gas overbottom pressure cold energy cogeneration unit the most according to claim 2, it is characterised in that described pressure-bearing tank end
Mouth all uses flange-interface.
Natural gas overbottom pressure cold energy cogeneration unit the most according to claim 2, it is characterised in that in described pressure-bearing tank
Being provided with vertical oil-gas separator, the end cap on vertical oil-gas separator top is arranged on pressure-bearing tank.
Natural gas overbottom pressure cold energy cogeneration unit the most according to claim 1, it is characterised in that in described heat exchange of heat pipe
It is provided with baffle plate.
Natural gas overbottom pressure cold energy cogeneration unit the most according to claim 1, it is characterised in that described working medium pump uses not
Rust steel centrifugal multistage pump multiple centrifugal pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610838869.2A CN106285803A (en) | 2016-09-20 | 2016-09-20 | Natural gas overbottom pressure cold energy cogeneration unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610838869.2A CN106285803A (en) | 2016-09-20 | 2016-09-20 | Natural gas overbottom pressure cold energy cogeneration unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106285803A true CN106285803A (en) | 2017-01-04 |
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ID=57712159
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610838869.2A Pending CN106285803A (en) | 2016-09-20 | 2016-09-20 | Natural gas overbottom pressure cold energy cogeneration unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106285803A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108894837A (en) * | 2018-05-16 | 2018-11-27 | 广州莱仑特种装备有限公司 | A kind of latent liquid type noise reduction and heat riser for pressure energy of natural gas power generator |
| CN109709911A (en) * | 2018-12-11 | 2019-05-03 | 上海电力学院 | A kind of fired power generating unit cycle fluid leakage On-line Measuring Method and measuring system |
| CN111485965A (en) * | 2019-01-25 | 2020-08-04 | 碧海舟（北京）节能环保装备有限公司 | L NG cold energy recovery power generation method and device based on carbon dioxide working medium |
Citations (6)
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| US4320303A (en) * | 1979-10-11 | 1982-03-16 | Osaka Gas Company, Ltd. | System for generation of electricity by utilization of heat exchange between liquefied natural gas and intermediate heat medium |
| US20050274126A1 (en) * | 2004-06-15 | 2005-12-15 | Baudat Ned P | Apparatus and methods for converting a cryogenic fluid into gas |
| CN102116215A (en) * | 2010-12-29 | 2011-07-06 | 上海新奥能源科技有限公司 | Self-electricity consumption reduction combined cooling heat and power system |
| CN102401590A (en) * | 2011-11-21 | 2012-04-04 | 昆明理工大学 | Power generation system for waste heat of medium and low temperature flue gas with heat pipe heat exchanger organic medium Rankine cycle |
| CN104018901A (en) * | 2014-06-12 | 2014-09-03 | 中节能工业节能有限公司 | Natural gas, pressure energy and cold energy combined power generation system |
| CN205382965U (en) * | 2015-12-28 | 2016-07-13 | 西安陕鼓动力股份有限公司 | Utilize organic rankine cycle practitioner ordinary in skill to verify and send out electric machine cooling's device |
-
2016
- 2016-09-20 CN CN201610838869.2A patent/CN106285803A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4320303A (en) * | 1979-10-11 | 1982-03-16 | Osaka Gas Company, Ltd. | System for generation of electricity by utilization of heat exchange between liquefied natural gas and intermediate heat medium |
| US20050274126A1 (en) * | 2004-06-15 | 2005-12-15 | Baudat Ned P | Apparatus and methods for converting a cryogenic fluid into gas |
| CN102116215A (en) * | 2010-12-29 | 2011-07-06 | 上海新奥能源科技有限公司 | Self-electricity consumption reduction combined cooling heat and power system |
| CN102401590A (en) * | 2011-11-21 | 2012-04-04 | 昆明理工大学 | Power generation system for waste heat of medium and low temperature flue gas with heat pipe heat exchanger organic medium Rankine cycle |
| CN104018901A (en) * | 2014-06-12 | 2014-09-03 | 中节能工业节能有限公司 | Natural gas, pressure energy and cold energy combined power generation system |
| CN205382965U (en) * | 2015-12-28 | 2016-07-13 | 西安陕鼓动力股份有限公司 | Utilize organic rankine cycle practitioner ordinary in skill to verify and send out electric machine cooling's device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108894837A (en) * | 2018-05-16 | 2018-11-27 | 广州莱仑特种装备有限公司 | A kind of latent liquid type noise reduction and heat riser for pressure energy of natural gas power generator |
| CN109709911A (en) * | 2018-12-11 | 2019-05-03 | 上海电力学院 | A kind of fired power generating unit cycle fluid leakage On-line Measuring Method and measuring system |
| CN109709911B (en) * | 2018-12-11 | 2021-06-22 | 上海电力学院 | On-line measuring method and system for leakage of circulating working medium of thermal power generating unit |
| CN111485965A (en) * | 2019-01-25 | 2020-08-04 | 碧海舟（北京）节能环保装备有限公司 | L NG cold energy recovery power generation method and device based on carbon dioxide working medium |
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| PB01 | Publication | ||
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Application publication date: 20170104 |