CN206785443U - A kind of high-pressure natural gas cogeneration distributed energy resource system - Google Patents
A kind of high-pressure natural gas cogeneration distributed energy resource system Download PDFInfo
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- CN206785443U CN206785443U CN201720525184.2U CN201720525184U CN206785443U CN 206785443 U CN206785443 U CN 206785443U CN 201720525184 U CN201720525184 U CN 201720525184U CN 206785443 U CN206785443 U CN 206785443U
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 170
- 239000003345 natural gas Substances 0.000 title claims abstract description 85
- 239000007789 gas Substances 0.000 claims abstract description 122
- 238000002485 combustion reaction Methods 0.000 claims abstract description 27
- 230000001105 regulatory effect Effects 0.000 claims abstract description 20
- 239000002826 coolant Substances 0.000 claims abstract description 11
- 239000000498 cooling water Substances 0.000 claims description 47
- 230000006835 compression Effects 0.000 claims description 23
- 238000007906 compression Methods 0.000 claims description 23
- 239000000779 smoke Substances 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 239000002918 waste heat Substances 0.000 claims description 18
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 14
- 238000007599 discharging Methods 0.000 claims description 14
- 239000003546 flue gas Substances 0.000 claims description 14
- 239000000567 combustion gas Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 235000019504 cigarettes Nutrition 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 239000000110 cooling liquid Substances 0.000 claims 2
- 239000003517 fume Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000006837 decompression Effects 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 18
- 239000000112 cooling gas Substances 0.000 description 6
- 230000009467 reduction Effects 0.000 description 4
- 238000005057 refrigeration Methods 0.000 description 4
- 238000010792 warming Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004320 controlled atmosphere Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
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- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model discloses a kind of high-pressure natural gas cogeneration distributed energy resource system, including alliance energy source station and metering voltage regulating station, alliance energy source station is connected on high-pressure natural gas gas pipeline with metering voltage regulating station by pneumatic cut-off valve, and alliance energy source station is with measuring that voltage regulating station is non-is connected in series；Alliance energy source station includes pressuring expansion unit and gas turbine group；Gas turbine group includes gas turbine blower, gas-turbine combustion chamber and turbine turbine, and gas turbine blower is connected with turbine turbine；Expansion unit is connected with gas turbine blower；The alliance energy source station is also including defeated unit outside generator unit, coolant feed unit and steam.By using high-pressure natural gas pressure difference energy, improve Combined cycle gas-steam turbine operating efficiency, particularly gas turbine power output, and can reaches the requirement of natural gas process decompression simultaneously, the high-pressure natural gas pressure energy of original waste is set to recycle, it is its easy to operate, small investment, reliable.
Description
Technical field
A kind of cogeneration energy source station is the utility model is related to, particularly a kind of high-pressure natural gas cogeneration distribution energy
Source system.
Background technology
The long distance delivery of natural gas is typically conveyed using 4~more than 7MPa pressure piping, and high-voltage tube gas transmission is entering
Before Distribution of Natural formula energy source station gas turbine inlet, it will usually gas pressure is reduced to by 2.5MPa or so by voltage regulating station,
Natural gas lift temperature after ensuring decompression by the way of external heat is also needed to simultaneously, to normal working temperature, to meet gas turbine to enter
Mouth fuel atmospheric pressure and temperature requirement, add energy input.
In addition, gas turbine unit air inlet cooling at present is mainly using compression-type refrigeration, absorption refrigeration, cold-storage
And the modes such as water cooling are directly contacted, not only add the expense such as additional investment and maintenance, in addition it is also necessary to consume certain energy.
The pressure reduction at natural gas pressure regulating station typically uses expenditure and pressure mode, from engineering thermal theory, the same day
When right gas possesses certain pressure and temperature, just possesses certain energy, i.e., the potential energy embodied by pressure and by temperature
The kinetic energy embodied, the two is collectively referred to as the interior energy of natural gas.When being adjusted with pressure reducer, this partial pressure differential energy does not have
Utilized well.
How to utilize this portion of natural gas pressure difference energy well, its difficulty be natural gas expansion pressure reduction along with
The temperature drop of the even upper Baidu of tens of degree, the too low inconvenience for causing to use of rear end natural gas temperature；Therefore research and develop it is a kind of both can be with
Gas-steam Combined Cycle operating efficiency is improved using natural gas pressure difference energy, avoids heating expansion from being depressured the day after tomorrow using and can
The new technological flow of the energy consumed during right gas is very necessary.
Utility model content
Goal of the invention of the present utility model is：For above-mentioned problem, there is provided one kind utilizes high-pressure natural gas pressure
Poor energy improves the technological process of cogeneration NG Distributed Energy System efficiency, by using natural gas pressure difference energy,
Gas-steam Combined Cycle operating efficiency is improved, while and can reaches the technological process of the requirement of natural gas process decompression, makes original
The pressure energy for having waste is recycled, its easy to operate, small investment, reliable, has wide applicability.
The technical solution adopted in the utility model is as follows：
High-pressure natural gas cogeneration distributed energy resource system of the present utility model, it includes alliance energy source station and metering is adjusted
Pressure station, alliance energy source station are connected on high-pressure gas conveyance conduit with metering voltage regulating station by pneumatic cut-off valve, the alliance energy
Stand and voltage regulating station is non-is connected in series for metering；The alliance energy source station includes expansion unit and gas turbine group；The gas turbine
Group includes gas turbine blower, gas-turbine combustion chamber and turbine turbine, gas turbine blower and the series connection of turbine turbine；Institute
Stating expansion unit includes expander end and expanding machine pressurized end, and expansion unit is connected with gas turbine blower；It is described
Source station is energized also including defeated unit outside generator unit, coolant feed unit and steam, generator unit is connected with turbine turbine, cold
But liquid feed unit is cooled down by cooling water cooler and cryogenic natural gas heat exchange after expansion, and defeated unit passes through waste heat pot outside steam
Stove is connected with turbine turbine exit flue, and turbine turbine smoke evacuation flue gas cryogenic natural gas after smoke discharging residual heat recover is to expansion enters
Row heating heel row goes out flue gas.
Due to using said structure, by setting alliance energy source station on natural gas high pressure conveyance conduit, by natural controlled atmosphere
The pressure difference energy and low temperature formed in the pressure reduction of pressure station is converted to gas turbine group compressor unit driving kinetic energy, gas turbine
The cold energy such as air inlet cooling and circulating cooling water cooling, the utilization rate of energy is improved, avoids the loss and waste of energy,
The operating efficiency of fuel gas-steam alliance circulation is ensure that, reasonably using system capacity, reduces use cost, and whole system
Structure of uniting and technique are simple, and operability is extremely strong.
High-pressure natural gas cogeneration distributed energy resource system of the present utility model, the expansion unit include expanding machine
Expanding end and expanding machine compression end, expander end pass through pneumatic cut-off valve two, flow control valve and high-pressure gas delivery pipe
Road connects, and gas turbine blower connects with expanding machine compression end, expander end gas outlet and air heat exchanger day
Right gas entrance connection.
Because using said structure, high-pressure natural gas is in expanding end expansion work, driving expanding machine compression end and combustion gas wheel
Machine compressor is rotated, and expanding machine compression end natural gas is pressurized, and improves the gas pressure after expansion work, while synchronous axial system
Gas turbine group compressor to enter gas turbine air be pressurized；It is follow-up by high-pressure natural gas expansion work
Action cell provides good action condition and reduces investment and energy consumption, while expanding machine compression end and gas turbine group compressor
As expansion unit expanding end backend load, it can be used as the decelerator of expansion unit, avoid expanding machine rotating speed is too high from causing
Driving failure.
High-pressure natural gas cogeneration distributed energy resource system of the present utility model, the air heat exchanger also with combustion gas wheel
Machine compressor connects；The generator unit, which is given out a contract for a project, includes combustion gas turbine turbine and generator, and generator is connected with combustion gas turbine turbine；
The gas turbine group, air heat exchanger and generator form generator unit pipeline.
Because using said structure, the low-temp low-pressure natural gas air inlet after being done work by gas turbine blower exchanges heat
Device, the air heat-exchange with that will enter gas turbine, air is cooled down, natural gas is warming up to certain temperature；It is empty after cooling
Gas enters the gas turbine blower being connected with expanding machine compression end, enters combustion gas through gas turbine blower boosting rear portion
Turbine combustion chamber and natural gas mixed combustion, while a part of cold air cools down air cooling gas turbine as gas turbine blades
Blade；High-temperature flue gas propelling gas turbine engine acting after burning, drives electrical power generators；High-pressure natural gas passes through expander
Acting drives gas turbine blower work, can cancel the startup motor for driving compressor, reduces equipment investment, is not required to consumption volume
Outer electric power.Unit is expanded simultaneously and drives gas turbine blower work, reduces gas turbine group consumption doing on compressor
Work(, power consumption is reduced, increase generated energy；Simultaneously because gas turbine group air inlet temperature reduces, gas turbine can be dramatically increased
Power output（Increase by 15% or so）, increase generated energy.
High-pressure natural gas cogeneration distributed energy resource system of the present utility model, the coolant feed unit include cold
But water-circulating pump and cooling water cooler, the cooling water inlet of the cooling water cooler are connected with cooling water circulation pump discharge,
The cooling water of circulation in cooling water circulating pump；The air inlet of the cooling water cooler and the gas outlet of air heat exchanger connect
Connect, low-temperature receiver is provided for cooling water cooler by the cryogenic natural gas after expanding；The gas outlet of the cooling water cooler is connected to
Natural gas is heated after smoke discharging residual heat recover heat exchanging；The expansion unit, air heat exchanger, cooling water circulating pump and cold
But water cooler forms coolant feed unit pipeline.
Due to use said structure and technique, the low-temp low-pressure natural gas after expansion work through cooling water cooler and cools down
What water-circulating pump pump came crosses hot cooling water heat exchange, by cooling water temperature, can be used for cooling and lubricating oil system etc.；The cooling system
Pipeline structure is simple, improves cooling effectiveness, has saved the equipment investment for reducing cooling water temperature, is not required to consume additional electric
Power, when summer, environment temperature was higher, cooling effect is more obvious.
High-pressure natural gas cogeneration distributed energy resource system of the present utility model, defeated unit includes waste heat outside the steam
Boiler and demineralized water feed pump；Waste heat boiler and the demineralized water feed pump, gas turbine group turbine turbine smoke evacuation outlet connection；
The gas turbine group turbine turbine exit flue, demineralized water feed pump, waste heat boiler form steam production and outer defeated unit pipes
Road.
Due to using said structure, into the combustion of natural gas of gas turbine group after caused high-temperature flue gas through waste heat pot
Stove, the demineralized water that demineralized water water pump pump comes is heated to be high-temperature steam, outer defeated user uses, high-temperature residual heat caused by flue gas is added
To utilize, the thermal efficiency of gas turbine group is improved.
High-pressure natural gas cogeneration distributed energy resource system of the present utility model, the gas turbine group turbine turbine cigarette
Gas is connected with smoke discharging residual heat recover in outlet, for heating low-temp low-pressure natural gas.
Because the high-temperature flue gas using said structure, discharge of gas turbine will be with air and cooling through smoke discharging residual heat recover
The still very low heated by natural gas of temperature boosts, subsequently into combustion to after certain temperature into expanding machine compression end after water heat exchange
Gas-turbine combustion chamber and air mixed combustion, the high-temperature flue gas after burning is through waste heat boiler, the softened water next by water pump pump is softened
It is heated to be high-temperature steam, outer defeated user uses；The high-temperature flue gas heated natural gas discharged using gas turbine, save metering pressure regulation
Afterwards required to the equipment investment of heated natural gas, it is not required to consume additional power.
High-pressure natural gas cogeneration distributed energy resource system of the present utility model, the alliance energy source station and pneumatic cut-out
Control valve is additionally provided between valve two；The control valve is connected with expander end, gas discharge of the control into expanding machine
With expanding machine rotating speed.
Because using said structure, the control valve can control the gas discharge and flow velocity into expanding machine, so as to control
Expanding machine rotating speed processed.
In summary, by adopting the above-described technical solution, the beneficial effects of the utility model are：
1st, high-pressure natural gas cogeneration distributed energy resource system of the present utility model, the connection of its system is simple, rationally follows
Ring simultaneously utilizes energy, the pressure energy of original waste is recycled, solve in the prior art natural gas in pressure reduction
In energy loss and waste for topic, improve the operating efficiency of Gas-steam Combined Cycle and the comprehensive utilization ratio of the energy；
2nd, using cold energy caused by high-pressure natural gas expansion work, cooling gas turbine group air inlet, combustion gas wheel is reduced
Unit air inlet temperature, gas turbine power output can be dramatically increased（Increase by 15% or so）, increase generated energy, save simultaneously
Equipment investment for inlet gas cooling.
3rd, the startup motor for driving combustion gas wheel compressor can be cancelled in the present system, reduce equipment investment, pass through high pressure
Natural gas expansion work drives compressor to rotate, it is not necessary to consumes additional power, reduces gas turbine group consumption in compressor
On acting, increase generated energy；
4th, using the cryogenic natural gas after the high-temperature flue gas heating expansion work of gas turbine discharge, save after measuring pressure regulation
Required to the equipment investment of heated natural gas, it is not required to consume additional power；
5th, low-temp low-pressure natural gas and cooling water exchange heat, and reduce cooling water temperature, improve cooling effectiveness, save for reducing
The equipment investment of cooling water temperature；
6th, its is easy to operate, and energy utilization rate is high, and use cost is low；
7th, system run all right is good, reliable and practical, has good social economic value, suitable for popularization and application.
Brief description of the drawings
Fig. 1 is cogeneration NG Distributed Energy System figure of the present utility model；
Marked in figure：1- alliance energy source stations, 101- expanders end, 102- air heat exchangers, the compression of 103- expanding machines
End, 104- gas turbine blowers, 105- gas-turbine combustion chambers, 106- turbine turbines, 107- generators, 108- cooling waters follow
Ring pump, 109- cooling water coolers, 110- demineralized water feed pumps, 111- waste heat boilers, 112- smoke discharging residual heat recovers, 113- gas
Dynamic stop valve three, 2- meterings voltage regulating station, 3- pneumatic cut-off valves one, 4- pneumatic cut-off valves two, 5- control valves.
Embodiment
Below in conjunction with the accompanying drawings, the utility model is described in detail.
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
Embodiment 1
As shown in figure 1, a kind of high-pressure natural gas cogeneration distributed energy resource system, it includes alliance energy source station 1 and meter
Voltage regulating station 2 is measured, alliance energy source station 1 is connected on high-pressure gas conveyance conduit with metering voltage regulating station 2 by pneumatic cut-off valve, alliance
Voltage regulating station 2 is non-is connected in series with metering for energy source station 1；Alliance energy source station 1 includes expansion unit and gas turbine group；Gas turbine group
Including gas turbine blower 104, gas-turbine combustion chamber 105 and turbine turbine 106；Wherein expand unit, gas turbine pressure
Mechanism of qi 104 and turbine turbine 106 are connected；Alliance energy source station 1 is also including defeated list outside generator unit, coolant feed unit and steam
Member；Generator unit and the turbine turbine 106 of gas turbine group connect, coolant feed unit by cooling water cooler 109 with
Air heat exchanger 102 is connected, and defeated unit is exported by waste heat boiler 111 and the smoke evacuation of gas turbine group turbine turbine 106 outside steam
Connection；Expansion unit includes expander end 101 and expanding machine compression end 103, and expander end 101 is by pneumatically cutting
Disconnected valve 24, flow control valve and the defeated pipeline of high-pressure gas connect, and gas turbine blower 104 connects with expanding machine compression end 103
Connect；Wherein high-pressure natural gas is after the expansion expansion work of unit expanding end 101, the compression heating of drive expansion unit compression end 103
Natural gas, improve expansion work after gas pressure.Expanding machine compression end 103 is with gas turbine blower 104 simultaneously
It is coaxially connected, drive gas turbine blower 104 to rotate using expanding machine；Expander end 101 is also connected with having time in outlet
Gas heat exchanger 102.Pneumatic cut-off valve includes pneumatic cut-off valve 1, pneumatic cut-off valve 24 and pneumatic cut-off valve 3 113；Pneumatically cut
Disconnected valve 1 is used to switch metering voltage regulating station 2 pipeline, and pneumatic cut-off valve 24 is used to switch the pipeline of alliance energy source station 1, pneumatic cut-out
Valve 3 113 is used to switch gas turbine group fuel gas air inlet pipeline；When expanding machine breaks down, the pneumatic of expander inlet is closed
Stop valve 24, expanding machine autostop, pneumatic cut-off valve 3 113 is closed, while open the inlet pneumatic cut-out of metering voltage regulating station 2
Valve 1, flow are transferred to metering voltage regulating station 2, and pressure regulation metering is carried out to natural gas and is sent into gas turbine group work by combustion after heating.
Control valve 5 is additionally provided between alliance energy source station 1 and pneumatic cut-off valve 24；Control valve 5 is connected with expander end 101, the control
Valve 5 processed is flow control valve, when expanding machine normal work, controls to adjust gas discharge and flow velocity into expanding machine, from
And control expanding machine rotating speed.
Air heat exchanger 102 is connected with expansion unit expanding end 101, low-temp low-pressure natural gas and air after expansion work
Heat exchange, air of the cooling into gas turbine group；
Generator unit, which is given out a contract for a project, includes gas turbine group combustion chamber 105, turbine turbine 106, generator 107, generator 107 with thoroughly
Flat turbine 106 connects；Gas turbine group, air heat exchanger 102 and generator 107 form generator unit pipeline.
Coolant feed unit includes cooling water circulating pump 108 and cooling water cooler 109, cooling water cooler 109
Cooling water inlet is connected with the outlet of cooling water circulating pump 108, and circulation crosses hot cooling water in coolant circulation pump 108；The cooling
The air inlet of water cooler 109 is connected with the gas outlet of air heat exchanger 102, is cooling by the cryogenic natural gas after expanding
Water cooler 109 provides low-temperature receiver；Air heat exchanger 102, cooling water circulating pump 108 and cooling water cooler 109 form coolant
Feed unit pipeline.
Defeated unit includes waste heat boiler 111 and demineralized water feed pump 110 outside steam；Waste heat boiler 111 and demineralized water feedwater
Pump 110, the smoke evacuation of gas turbine group turbine turbine 106 outlet connection；The exit flue of gas turbine group turbine turbine 106, remove
Salt solution feed pump 110, waste heat boiler 111 form steam production and outer defeated unit pipeline.
The flue outlet of waste heat boiler 111 is connected with smoke discharging residual heat recover 112, and cryogenic natural gas is heated, heating
Natural gas enters expansion unit compression end 103 afterwards, enters gas turbine group combustion chamber 105 and gas turbine after compressed end supercharging
The air mixing of group compressor 104 carries out work by combustion；The smoke discharging residual heat recover 112, expansion unit compression end 103,
Gas turbine group combustion chamber 105 forms gas turbine group gas supply unit pipeline.
Embodiment 2
Cogeneration NG Distributed Energy System based on embodiment 1, one kind utilize high-pressure natural gas transmission pipeline network
Pressure differential improves the new technology of cogeneration NG Distributed Energy System efficiency, and its technical process is as follows：
High pressure pipeline gas（20°C、4MPa）Disconnect through pneumatic cut-off valve 3 and metering voltage regulating station 2, controlled through control valve 5
Into the gas discharge and flow velocity at expander end 101, high-pressure natural gas expansion work in expander end 101,
Expander end 101 and expanding machine compression end 103 are promoted from low speed to high-speed rotation, and is driven and expanding machine compression end 103
Connected gas turbine blower 104 rotates at a high speed, and the gas pressure after expansion work is down to 0. 4MPa, and temperature is -20 °C
Left and right.Low-temp low-pressure natural gas air inlet heat exchanger 102 after acting, the air heat-exchange with gas turbine group will be entered,
Air is cooled to 5 DEG C or so, natural gas is warming up to -10 DEG C or so；Air enters and is connected with expanding machine compression end 103 after cooling
Gas turbine blower 104, through gas turbine blower 104 boost rear portion enter gas turbine combustion chamber 105 and day
Right gas mixed combustion, while a part of cold air cools down air cooling gas turbine blades as gas turbine blades；After burning
High-temperature flue gas promotes gas turbine group turbine turbine 106 to rotate acting, drives generator 107 to generate electricity.
The natural gas after the heat exchange of air heat exchanger 102（- 10 DEG C or so）, through cooling water cooler 109 and cooling water circulation
The cooling water that the pump of pump 108 comes（20 DEG C or so）Heat exchange, by cooling water temperature to 5 DEG C or so, for cooling and lubricating oil system etc..
Natural gas after the heat exchange of cooling water cooler 109 is warming up to 5 DEG C or so, through smoke discharging residual heat recover 112, utilizes
The high-temperature flue gas of gas turbine group discharge to 50 DEG C or so, boosts to heated by natural gas subsequently into expanding machine compression end 103
2.5MPa, finally enter gas-turbine combustion chamber 105 and air mixed combustion, the high-temperature flue gas after burning through waste heat boiler 111,
The demineralized water that the pump of demineralized water feed pump 110 comes is heated to be high-temperature steam, outer defeated user uses.
In above-mentioned flow, when expanding machine breaks down, closing expands the pneumatic cut-off valve two of the entrance of unit expanding end 101
4, close pneumatic cut-off valve 3 113, expanding machine autostop；Metering voltage regulating station inlet pneumatic stop valve 1, flow are opened simultaneously
Natural gas is transferred to heat after voltage regulating station pressure regulation and input gas turbine group work by combustion.
Low-temp low-pressure heated by natural gas temperature in above-mentioned flow after expansion work need to be according to air themperature and smoke discharging residual heat
Exhaust gas temperature determines after recovery, ensures that the natural gas temperature into combustion chamber meets unit requirement.
Using the low-temp low-pressure natural gas cooling gas turbine intake air after expansion work, when air themperature declines,
Unit density of the induced air can be made to increase, into the increase of the air quality of gas turbine group compressor and combustion chamber, intake air temperature is lower,
Gas Turbine Output is bigger, and power input to compressor is smaller, and generated output is higher.With other inlet air cooling modes（Compression-type refrigeration, suction
Receipts formula refrigeration, cold-storage directly contact water cooling etc.）Compare, save the equipment investment for cooling air, be not required to consume additional electric
Power.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (8)
- A kind of 1. high-pressure natural gas cogeneration distributed energy resource system, it is characterised in that：It includes alliance energy source station（1）And meter Measure voltage regulating station（2）, alliance energy source station（1）With measuring voltage regulating station（2）High-pressure gas delivery pipe is connected to by pneumatic cut-off valve On road, alliance energy source station（1）With measuring voltage regulating station（2）It is non-to be connected in series；The alliance energy source station（1）Including expansion unit and combustion Turbine unit；The gas turbine group includes gas turbine blower（104）, gas-turbine combustion chamber（105）With turbine turbine （106）, gas turbine blower（104）With turbine turbine（106）Series connection；The expansion unit includes expander end （101）With expanding machine pressurized end（103）, expand unit and gas turbine blower（104）Connection；The alliance energy source station（1） Also including defeated unit outside generator unit, coolant feed unit and steam, generator unit and turbine turbine（106）Connection, cooling Liquid feed unit passes through cooling water cooler（109）Cooled down with cryogenic natural gas heat exchange after expansion, defeated unit passes through remaining outside steam Heat boiler（111）With turbine turbine（106）Exit flue connects, turbine turbine（106）Flue gas discharge fume through smoke discharging residual heat recover （112）Heating heel row is carried out to cryogenic natural gas after expansion and goes out flue gas.
- 2. high-pressure natural gas cogeneration distributed energy resource system according to claim 1, it is characterised in that：The expansion Unit includes expander end（101）With expanding machine compression end（103）, expander end（101）By pneumatically cutting off Valve two（4）, flow control valve and high-pressure gas conveyance conduit connect, gas turbine blower（104）With expanding machine compression end （103）Connection, expander end（101）Gas outlet and air heat exchanger（102）Gas inlet connects.
- 3. high-pressure natural gas cogeneration distributed energy resource system according to claim 2, it is characterised in that：The air Heat exchanger（102）Also with gas turbine blower（104）Connection；The generator unit, which is given out a contract for a project, includes combustion gas turbine turbine（106）With Generator（107）, generator（107）With combustion gas turbine turbine（106）Connection；The gas turbine group, air heat exchanger（102） And generator（107）Form generator unit pipeline.
- 4. high-pressure natural gas cogeneration distributed energy resource system according to claim 1, it is characterised in that：The cooling Liquid feed unit includes cooling water circulating pump（108）And cooling water cooler（109）, the cooling water cooler（109）It is cold But water inlet and cooling water circulating pump（108）Outlet is connected, cooling water circulating pump（108）The cooling water of interior circulation；The cooling Water cooler（109）Air inlet and air heat exchanger（102）Gas outlet connection, be by the cryogenic natural gas after expanding Cooling water cooler（109）Low-temperature receiver is provided；The cooling water cooler（109）Gas outlet be connected to smoke discharging residual heat recover （112）Natural gas is heated after heat exchanging；The expansion unit, air heat exchanger（102）, cooling water circulating pump（108）With Cooling water cooler（109）Form coolant feed unit pipeline.
- 5. high-pressure natural gas cogeneration distributed energy resource system according to claim 1, it is characterised in that：The waste heat Boiler（111）Flue outlet and smoke discharging residual heat recover（112）Connection, is heated, natural gas after heating to cryogenic natural gas Into expansion unit compression end（103）, enter gas turbine group combustion chamber after compressed end supercharging（105）Work by combustion；It is described Smoke discharging residual heat recover（112）, expansion unit compression end（103）, gas turbine group combustion chamber（105）Form gas turbine group combustion Gas feeding unit pipeline.
- 6. high-pressure natural gas cogeneration distributed energy resource system according to claim 1, it is characterised in that：The steam Outer defeated unit includes waste heat boiler（111）With demineralized water feed pump（110）；The waste heat boiler（111）With demineralized water feed pump （110）, gas turbine group turbine turbine（106）Smoke evacuation outlet connection；The gas turbine group turbine turbine（106）Smoke evacuation cigarette Road, demineralized water feed pump（110）, waste heat boiler（111）Form steam production and outer defeated unit pipeline.
- 7. high-pressure natural gas cogeneration distributed energy resource system according to claim 1, it is characterised in that：The smoke evacuation Waste-heat recoverer（112）Cryogenic natural gas after expanding is reclaimed and heated for gas turbine smoke discharging residual heat.
- 8. high-pressure natural gas cogeneration distributed energy resource system according to claim 2, it is characterised in that：The alliance Energy source station（1）With pneumatic cut-off valve two（4）Between be additionally provided with control valve（5）；The control valve（5）With expander end （101）Connection, gas discharge and expanding machine rotating speed of the control into expanding machine.
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| CN108317011A (en) * | 2018-01-23 | 2018-07-24 | 深圳市燃气集团股份有限公司 | A kind of pressure energy of natural gas recovery system of integrated gas turbine |
| CN108332055A (en) * | 2018-02-11 | 2018-07-27 | 曹京良 | A kind of distribution point defeated station natural gas compression system |
| CN108518584A (en) * | 2018-03-14 | 2018-09-11 | 浙江大学宁波理工学院 | A kind of high-pressure natural gas pipe network pressure energy recycling system |
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