CN202867001U - Distributed cooling, heating and power combined supply system for small-sized combustion gas turbines - Google Patents
Distributed cooling, heating and power combined supply system for small-sized combustion gas turbines Download PDFInfo
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- CN202867001U CN202867001U CN2012204616108U CN201220461610U CN202867001U CN 202867001 U CN202867001 U CN 202867001U CN 2012204616108 U CN2012204616108 U CN 2012204616108U CN 201220461610 U CN201220461610 U CN 201220461610U CN 202867001 U CN202867001 U CN 202867001U
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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- 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
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- 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]
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Abstract
The utility model discloses a distributed cooling, heating and power combined supply system for small-sized combustion gas turbines, and the system comprises a small-sized combustion gas turbine, a waste heat boiler and a lithium bromide unit, wherein the lithium bromide unit is used for providing cooling capacity for users, the small-sized combustion gas turbine comprises a turbine and a combustion chamber, air and gas are mixed and combusted in the combustion chamber, a mixture of produced steam and gas enters the turbine to act, and flue gas subjected to acting is conveyed to the waste heat boiler, water fed into the waste heat boiler from the water inlet of the waste heat boiler is heated so as to produce superheated steam, the system also comprises a second baffle valve, the superheated steam produced by the waste heat boiler is conveyed to the input port of the second baffle valve, the output port of the second baffle valve is communicated with the combustion chamber of the small-sized combustion gas turbine, and another output port of the second baffle valve is communicated with the lithium bromide unit. The distributed cooling, heating and power combined supply system for small-sized combustion gas turbines disclosed by the utility model can flexibly control the heat-to-electric ratio; and the system is high in economical efficiency and equipment availability.
Description
Technical field
The utility model relates to cooling heating and power generation system, particularly a kind of small size gas turbine distributed triple-generation system.
Background technique
Supply of cooling, heating and electrical powers (Combined Cooling Heating and Power, CCHP) is on a kind of basis that is based upon energy cascade utilization concept, integrates the multiple-supplying supply system of refrigeration, heat supply (heating and supplying hot water) and power generation process.
The small size gas turbine supply of cooling, heating and electrical powers is a kind of form of multiple-supplying supply system, small size gas turbine is core apparatus, the acting take rock gas, biogas, gasoline, diesel oil and alkanes gas etc. as fuel combustion, its high-temperature smoke discharging drives lithium-bromide absorption-type refrigerating machine and exhaust heat boiler etc., is used for heat supply, refrigeration and the life water etc. of making a living.The load capacity of small size gas turbine adopts axial-flow compressor and axial turbine between 1000～20000kW, the refrigerating mode of blade is identical with big-and-middle-sized unit.Because technology maturation, the small size gas turbine price is relatively low, and generating efficiency is compared also very nearly the same with big-and-middle-sized unit.
The small size gas turbine supply of cooling, heating and electrical powers directly is applied to lithium-bromide absorption-type refrigerating machine with tail gas, so that refrigeration and heat supply to be provided.Lithium-bromide absorption-type refrigerating machine is a kind of take steam, hot water, fuel oil, combustion gas and various waste heat as thermal source, take water as refrigeration agent, take lithium-bromide solution as absorbing agent, produces the energy-saving type chiller plant of cold warm water.
Chinese patent 200310123331.6 discloses a kind of Multifunctional distributed cold-thermoelectric cogeneration system, and its two embodiment as shown in Figure 1 and Figure 2.
Among Fig. 1, Multifunctional distributed cold-thermoelectric cogeneration system is by gas turbine 1, residual heat type double-effect lithium bromide absorption type unit 2, heat exchanger 3, absorbed moisture removing device 4, cold accumulator 6, compression type unit 5, compression heat pump 7 forms, wherein, fuel enters the turbine acting generating of gas turbine 1, and gas turbine drives double-effect lithium bromide absorption type unit 2 freezes or heats, waste heat is through exchanger 3, be used for driving absorbed moisture removing device 4, its gas turbine 1 is connected in double-effect lithium bromide absorption type unit 2, and double-effect lithium bromide absorption type unit 2 is connected in heat exchanger 3, heat exchanger 3 is connected in absorbed moisture removing device 4, and compression type unit 5 is connected in cold accumulator 6.
Among Fig. 2, Multifunctional distributed cold-thermoelectric cogeneration system is by gas turbine 1, middle temperature exhaust heat boiler 9, low temperature exhaust heat boiler 10, steam type double-effect lithium bromide absorption type unit 11, absorbed moisture removing device 4, cold accumulator 6 and compression type unit 5, compression heat pump 7, heat-stored device 8 forms, wherein, fuel enters the turbine acting generating of gas turbine 1, and middle temperature exhaust heat boiler 9 drives steam type double-effect lithium bromide absorption type unit 11 and is used for freezing or heating.
But the traditional small size gas turbine distributed triple-generation system that comprises above-mentioned patent scheme, cooling and heating load is namely adjusted first in the general principle design of adopting " electricity determining by heat ", selects gas turbine according to cooling and heating load, generated energy is also just determined like this, and thermoelectric ratio can not free adjusting.When hot-cool demand changed, gas turbine need to move under variable working condition like this, but conventional gas turbine variable parameter operation is limited in scope, and guarantee that arbitrarily hot and cold, the electric output demand that satisfies under the variable working condition very on a large scale is difficult to accomplish.Particularly season in spring and autumn, when cooling and heating load is very little, gas turbine will be stopped transport substantially, cause resources idle.The not heat supply even gas turbine can only generate electricity is because conventional small-power gas turbine power generation efficient is low, so that whole small size gas turbine distributed triple-generation system is less economical.
The model utility content
The technical problems to be solved in the utility model provides a kind of small size gas turbine distributed triple-generation system, can be to thermoelectricity than flexibly regulation and control, and system has higher Economy and equipment availability.
For solving the problems of the technologies described above, small size gas turbine distributed triple-generation system of the present utility model, comprise small size gas turbine, exhaust heat boiler, the lithium bromide unit, the lithium bromide unit is used to the user that cold is provided, described small size gas turbine comprises turbine, the firing chamber, air and combustion gas mixing are burnt in the firing chamber, the mixture of the steam and gas of producing enters the turbine expansion acting, flue gas after the acting is sent to exhaust heat boiler, the water that heating exhaust heat boiler water intake passes into, produce superheated vapor, also comprise the second baffle valve, the superheated vapor that described exhaust heat boiler produces is sent to the inlet opening of described second baffle valve, and a delivery outlet of described second baffle valve leads to the firing chamber of described small size gas turbine, and another delivery outlet of described second baffle valve leads to described lithium bromide unit.
Described small size gas turbine distributed triple-generation system also comprises can the first flapper valve, flue gas after the acting is sent to the inlet opening of described the first flapper valve, one delivery outlet of described the first flapper valve leads to described exhaust heat boiler, and another delivery outlet of described the first flapper valve leads to gas exhaust duct.
Described small size gas turbine distributed triple-generation system can also comprise generator, and air and combustion gas mixing are burnt in the firing chamber, and the mixture of the steam and gas of production enters the turbine expansion acting, by described generator output electricity.
Described small size gas turbine distributed triple-generation system also comprises can grid-connection device, and the electricity of described generator output is sent into electrical network through described grid-connection device.
Described small size gas turbine can also comprise gas compressor, and described gas compressor is used for air compressing is pressed into the firing chamber.
Described small size gas turbine distributed triple-generation system can also comprise the temperature-adjustment pressure-adjustment device, another delivery outlet of described second baffle valve leads to described temperature-adjustment pressure-adjustment device, and described temperature-adjustment pressure-adjustment device carries out being sent to described lithium bromide unit behind the temperature-adjustment pressure-adjustment to superheated vapor.
Described small size gas turbine distributed triple-generation system can also comprise the 3rd flapper valve, described temperature-adjustment pressure-adjustment device carries out being sent to behind the temperature-adjustment pressure-adjustment inlet opening of described the 3rd flapper valve to superheated vapor, one delivery outlet of described the 3rd flapper valve leads to described lithium bromide unit, and another delivery outlet of described the 3rd flapper valve leads to hot duct.
Described small size gas turbine distributed triple-generation system can also comprise electric refrigerating machine, the first switch, and described electric refrigerating machine gets access to grid through the first switch, is used to the user that cold is provided.
Described small size gas turbine distributed triple-generation system can also comprise heat exchanger, exhaust heat boiler flue gas out is sent to the smoke inlet of described heat exchanger, described heat exchanger utilizes the waste heat in the flue gas that hot water is produced in the water heating that enters heat exchanger by the heat exchanger water intake, the hot water of producing is sent to domestic hot-water's pipeline through the heat exchanger water outlet, and heat exchanger smoke outlet flue gas out is sent to gas exhaust duct.
Described small size gas turbine distributed triple-generation system can also comprise the 4th flapper valve, described heat exchanger utilizes the waste heat in the flue gas that hot water is produced in the water heating that enters heat exchanger by the heat exchanger water intake, the hot water of producing is sent to the inlet opening of described the 4th flapper valve through the heat exchanger water outlet, one delivery outlet of the 4th flapper valve leads to the water intake of described exhaust heat boiler, and another delivery outlet of the 4th flapper valve leads to domestic hot-water's pipeline.
Described small size gas turbine distributed triple-generation system can also comprise the 5th flapper valve, condenser;
Heat exchanger smoke outlet flue gas out is sent to the inlet opening of described the 5th flapper valve, and a delivery outlet of described the 5th flapper valve leads to gas exhaust duct, and another delivery outlet of described the 5th flapper valve leads to the smoke inlet of described condenser;
Described condenser is used for the water vapor condensation to the flue gas that enters condenser by the condenser smoke inlet, produces recycle-water, and remaining flue gas is sent to gas exhaust duct through the smoke outlet of condenser.
Described small size gas turbine distributed triple-generation system can also comprise water tank, water processor;
Described water processor is sent into described water tank after being used for the recycle-water that the water outlet of direct-furnish water and condenser is sent into processed;
Described water tank is used for supplying water to described exhaust heat boiler, heat exchanger.
Described small size gas turbine distributed triple-generation system can also comprise cold motivation;
The water intake of described cold motivation communicates with described water tank, and the water outlet of described cold motivation communicates with the water inlet of described condenser, and described cold motivation is used for the water that cold motivation water inlet the is sent into supply condenser of lowering the temperature.
Described small size gas turbine distributed triple-generation system can also comprise second switch, the 6th flapper valve, gas fired boiler, the inlet opening of described the 6th flapper valve is through described second switch access combustion gas, one delivery outlet of described the 6th flapper valve leads to the fuel gas inlet of described exhaust heat boiler, and another delivery outlet of described the 6th flapper valve leads to the fuel gas inlet of described gas fired boiler;
Described gas fired boiler is used for gas-firing feedwater heating, produces steam and is transported to hot duct;
Described exhaust heat boiler also carries out afterburning by the rock gas that fuel gas inlet passes into, and the water that heating exhaust heat boiler water intake passes into produces superheated vapor
Small size gas turbine distributed triple-generation system of the present utility model, existing by small size gas turbine, exhaust heat boiler, on the basis of the conventional cogeneration cooling heating system that lithium bromide unit etc. form, introduce steam-recycling and condensate water recovery device, the superheated vapor that exhaust heat boiler is produced passes through regulating valve, a part is recycled into the firing chamber of small size gas turbine with the output power that increases small size gas turbine and the efficient that improves small size gas turbine, a part is defeated by the lithium bromide unit and refrigeration duty is provided or directly provides heat load to the user for the user, amount according to the re-injection of customer charge demand regulating valve control superheated vapor realizes the flexibly regulation and control of thermoelectric ratio, makes system have higher Economy and equipment availability.
Description of drawings
In order to be illustrated more clearly in the technical solution of the utility model, the below does simple the introduction to the accompanying drawing of the required use of the utility model, apparently, accompanying drawing in the following describes only is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is first embodiment's schematic representation of Chinese patent 200310123331.6;
Fig. 2 is second embodiment's schematic representation of Chinese patent 200310123331.6;
Fig. 3 is small size gas turbine distributed triple-generation system one mode of execution schematic representation of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the technological scheme in the utility model is carried out clear, complete description, obviously, described embodiment is a part of embodiment of the present utility model, rather than whole embodiments.Based on the embodiment in the utility model, all other embodiments that those of ordinary skills obtain under the prerequisite of not making creative work belong to the scope that the utility model is protected.
Small size gas turbine distributed triple-generation system one mode of execution of the present utility model comprises small size gas turbine 1, exhaust heat boiler 2, lithium bromide unit 3, electric refrigerating machine 4, temperature-adjustment pressure-adjustment device 5, heat exchanger 6, cold motivation 7, condenser 8, gas fired boiler 9, water tank 10, water processor 11, grid-connection device 12, generator 34, the first flapper valve 13, second baffle valve 14, the 3rd flapper valve 15, the 4th flapper valve 16, the 5th flapper valve 17, the 6th flapper valve 18, the first switch 21, second switch 22 as shown in Figure 3;
The first flapper valve 13, second baffle valve 14, the 3rd flapper valve 15, the 4th flapper valve 16, the 5th flapper valve 17, the 6th flapper valve 18 comprise an inlet opening respectively, two delivery outlets;
Described lithium bromide unit 3 is used to the user that cold is provided;
Described electric refrigerating machine 4 gets access to grid through the first switch 21, is used to the user that cold is provided;
Described small size gas turbine 1 comprises turbine 31, gas compressor 32, firing chamber 33;
Described firing chamber 33 comprises fuel gas inlet, air inlet, steam injection entrance, described fuel gas inlet is used for the access combustion gas, described steam injection entrance is used for the superheated vapor that access exhaust heat boiler 2 produces, and described gas compressor 32 is used for the air inlet by the firing chamber behind the air compressing is pressed into firing chamber 33;
Air and combustion gas mixing are burnt in described firing chamber, in described firing chamber 33, the burning of air and combustion gas mixing is heated to temperature before the turbine with the superheated vapor of re-injection, the mixture of the steam and gas of producing enters turbine 31 expansion actings, by described generator 34 output electricity, the electricity of described generator 34 outputs is sent into electrical network through described grid-connection device 12 again, flue gas after the acting is sent to the inlet opening of described the first flapper valve 13, the first flapper valve 13 1 delivery outlets lead to described exhaust heat boiler, and another delivery outlet of the first flapper valve 13 leads to gas exhaust duct;
Described exhaust heat boiler 2 comprises a water intake, a smoke inlet, a smoke outlet, a fuel gas inlet, superheated vapor outlet; Flue gas after the acting that the smoke inlet of described exhaust heat boiler is sent into the first flapper valve 13 passes into exhaust heat boiler 2, and the water that heating exhaust heat boiler water intake passes into produces superheated vapor; The fuel gas inlet of described exhaust heat boiler 2 is used for rock gas is passed into exhaust heat boiler 2, carries out the water that afterburning heating exhaust heat boiler water intake passes into, and produces superheated vapor; The smoke outlet of described exhaust heat boiler 2 is used for exhaust heat boiler flue gas out is sent to the smoke inlet of heat exchanger 6; The superheated vapor outlet of described exhaust heat boiler 2 is used for the superheated vapor that exhaust heat boiler produces is sent to the inlet opening of second baffle valve 14, one delivery outlet of second baffle valve 14 leads to the firing chamber 33 of described small size gas turbine 1, and another delivery outlet of second baffle valve 14 leads to described temperature-adjustment pressure-adjustment device 5;
Described temperature-adjustment pressure-adjustment device 5, be used for superheated vapor is carried out being sent to behind the temperature-adjustment pressure-adjustment inlet opening of described the 3rd flapper valve 15, one delivery outlet of described the 3rd flapper valve 15 leads to described lithium bromide unit 3, and another delivery outlet of described the 3rd flapper valve 15 leads to hot duct;
Described heat exchanger 6, comprise a smoke inlet, a smoke outlet, a water intake, a water outlet, the heat exchanger smoke inlet passes into heat exchanger 6 with exhaust heat boiler flue gas out, described heat exchanger 6 utilizes the waste heat in the flue gas that hot water is produced in the water heating that enters heat exchanger 6 by the heat exchanger water intake, the hot water of producing is sent to the inlet opening of described the 4th flapper valve 16 through the heat exchanger water outlet, and the smoke outlet of described heat exchanger flue gas out is sent to the inlet opening of described the 5th flapper valve 17;
One delivery outlet of the 4th flapper valve 16 leads to the water intake of described exhaust heat boiler 2, and another delivery outlet of the 4th flapper valve 16 leads to domestic hot-water's pipeline;
One delivery outlet of the 5th flapper valve 17 communicates with gas exhaust duct, and another delivery outlet of the 5th flapper valve 17 communicates with the smoke inlet of described condenser 8;
Described condenser 8, comprise a smoke inlet, a smoke outlet, a water inlet, a water outlet, be used for the water vapor condensation to the flue gas that enters condenser by the condenser smoke inlet, produce recycle-water, recycle-water is sent to described water processor 11 through the condenser water outlet, and remaining flue gas is sent to gas exhaust duct through the smoke outlet of condenser;
Described water processor 11 is used for and will sends into water tank 10 after the processing such as the recycle-water that direct-furnish water and condenser water outlet are sent into deacidifies;
Described cold motivation 7, comprise a water intake, a water outlet, the water intake of described cold motivation 7 communicates with described water tank 10, the water outlet of described cold motivation 7 communicates with the water inlet of described condenser 8, described cold motivation 7 is used for the water that cold motivation water inlet is sent into is lowered the temperature, and supplies with condenser 8 by the water outlet of cold motivation 7 through the condenser water inlet;
Described water tank 10 is used for supplying water to described exhaust heat boiler 2, heat exchanger 6, cold motivation 7;
The inlet opening of described the 6th flapper valve 18 is through second switch 22 access combustion gas, and a delivery outlet of the 6th flapper valve 18 leads to the fuel gas inlet of described exhaust heat boiler 2, and another delivery outlet of the 6th flapper valve 18 leads to the fuel gas inlet of described gas fired boiler 11;
Described gas fired boiler 11 is used for gas-firing feedwater heating, produces steam and is transported to hot duct.
Small size gas turbine distributed triple-generation system of the present utility model, when small size gas turbine startup or boiler equipment troubleshooting, the first flapper valve 13 is closed, is opened to the delivery outlet of exhaust duct to the delivery outlet of exhaust heat boiler 2, air is after entering firing chamber 33 and combustion gas mixing burning after gas compressor 32 compressions, the flue gas of producing enters turbine 31 expansion actings, by generator 34 output electricity, be connected to the grid through grid-connection device 12, the flue gas after the acting enters atmosphere through gas exhaust duct again; System works is when the heat-electricity-cold combined supply pattern, the first flapper valve 13 is opened, air enters firing chamber 33 and combustion gas mixing burning after gas compressor 32 compressions, the superheated vapor of re-injection is heated to temperature before the turbine, the mixture of the steam and gas of producing enters turbine 33 expansion actings, flue gas after the acting enters exhaust heat boiler 2 heating exhaust heat boilers to the water generates superheated vapor, by regulating second baffle valve 14, control the superheated vapor amount of re-injection and the superheated vapor amount of heat supply, thereby realize thermoelectric than flexibly regulation and control.
Small size gas turbine distributed triple-generation system of the present utility model, existing by small size gas turbine, exhaust heat boiler, on the basis of the conventional cogeneration cooling heating system that lithium bromide unit etc. form, introduce steam-recycling and condensate water recovery device, the superheated vapor that exhaust heat boiler is produced passes through regulating valve, a part is recycled into the firing chamber of small size gas turbine with the output power that increases small size gas turbine and the efficient that improves small size gas turbine, a part is defeated by the lithium bromide unit and refrigeration duty is provided or directly provides heat load to the user for the user, amount according to the re-injection of customer charge demand regulating valve control superheated vapor realizes the flexibly regulation and control of thermoelectric ratio, makes system have higher Economy and equipment availability.
Small size gas turbine distributed triple-generation system of the present utility model, typical mode of operation is as follows:
1) summer refrigeration mode:
Second switch 22 is closed, the first flapper valve 13 is opened, is closed to the delivery outlet of exhaust duct to the delivery outlet of exhaust heat boiler, second baffle valve 14 is closed, is opened to the delivery outlet of lithium bromide unit 3 to the delivery outlet of firing chamber, air enters firing chamber 33 and combustion gas mixing burning after gas compressor 32 compressions, the flue gas of producing enters turbine 33 expansion actings, flue gas after the acting enters exhaust heat boiler 2, and the water after processing is heated into superheated vapor, supplies with lithium bromide unit 3 behind temperature-adjustment pressure-adjustment.When the useful steam demand of user, can regulate the 3rd flapper valve 15 to the aperture of the delivery outlet of hot duct, for the user provides steam.If refrigerating capacity is not enough, can open the first switch 21, with electric refrigerating machine 4 refrigeration.Exhaust heat boiler 2 flue gas out enters heat exchanger 6, produces the domestic hot-water, regulates the aperture of the 4th flapper valve 16, the output that can regulate the domestic hot-water.At this time vapour content does not seldom need to reclaim in the flue gas of heat exchanger 6 discharges, and the 5th flapper valve 17 is opened, closed to the delivery outlet of condenser 8 to the delivery outlet of gas exhaust duct, and flue gas directly enters atmosphere.
2) heat supply in winter pattern:
The first flapper valve 13 is opened to the delivery outlet of exhaust heat boiler 2, delivery outlet to exhaust duct is closed, second baffle valve 14 to the firing chamber 33 delivery outlet close, delivery outlet to lithium bromide unit 3 is opened, the 3rd flapper valve 15 is closed, is opened to the delivery outlet of hot duct to the delivery outlet of lithium bromide unit, air enters firing chamber 33 and combustion gas mixing burning after gas compressor 32 compressions, the flue gas of producing enters turbine 33 expansion actings, flue gas after the acting enters exhaust heat boiler 2, water after processing is heated into superheated vapor, behind temperature-adjustment pressure-adjustment, is used for heating.If heating quantity not sufficient, can open second switch 22 and the 6th flapper valve 18 to the delivery outlet of exhaust heat boiler, with the fuel gas supply exhaust heat boiler, produce superheated vapor by afterburning, be used for heating, also can open the 6th flapper valve 18 to the delivery outlet of gas fired boiler 9, with fuel gas supply gas fired boiler 9, produce steam, be used for heating.Exhaust heat boiler 2 flue gas out enters heat exchanger 6, produces the domestic hot-water, regulates the aperture of the 4th flapper valve 16, the output that can regulate the domestic hot-water.At this time vapour content does not seldom need to reclaim in the flue gas of heat exchanger 6 discharges, and the 5th flapper valve 17 is opened, closed to the delivery outlet of condenser 8 to the delivery outlet of gas exhaust duct, and flue gas directly enters atmosphere.
3) conditioning in Transition Season thermoelectricity/combined cooling and power pattern:
Spring, required heat load reduced, and autumn, required refrigeration duty reduced, and needed steam flow reduces, and can be recycled into unnecessary superheated vapor the firing chamber for increasing generating.The first flapper valve 13 is opened, is closed to the delivery outlet of exhaust duct to the delivery outlet of exhaust heat boiler 2, second baffle valve 14 free adjusting are to the delivery outlet aperture of firing chamber 33, the 3rd flapper valve 15 is done corresponding adjusting according to the cooling and heating load demand, during the heat load demand superheated vapor is supplied with for hot duct, during the refrigeration duty demand superheated vapor supplied with lithium bromide unit 3.Under this mode of operation, do not have the not enough situation of heating load and refrigerating capacity, second switch 22 and the 6th flapper valve 18 are all closed.Air enters firing chamber 33 and burns with combustion gas mixing after gas compressor 32 compressions, the flue gas of production enters turbine 33 expansion actings, and the flue gas after the acting enters exhaust heat boiler 2, and the water after processing is heated into superheated vapor, is used for heating behind temperature-adjustment pressure-adjustment/freeze.Exhaust heat boiler 2 flue gas out enters heat exchanger 6, produces the domestic hot-water, regulates the aperture of the 4th flapper valve 16, the output that can regulate the domestic hot-water.The amount that is recycled into firing chamber 33 according to superheated vapor judges whether that needs reclaim the water in the flue gas, if superheated vapor re-injection amount is less, at this time vapour content is seldom in heat exchanger 6 flue gas of discharging, do not need to reclaim, the 5th flapper valve 17 is opened to the delivery outlet of gas exhaust duct, delivery outlet to condenser 8 is closed, flue gas directly enters atmosphere, if superheated vapor re-injection amount is larger, the 5th flapper valve 17 is closed to the delivery outlet of gas exhaust duct, delivery outlet to condenser 8 is opened, condenser is condensed into recycle-water with the water vapor in the flue gas of heat exchanger 6 discharges, after deacidification, cycling and reutilization again.
4) the complete re-injection pattern of steam:
Without cooling and heating load demand or urgent need for electricity the time, all superheated vapors can be recycled into the firing chamber, improve generated energy.The first flapper valve 13 is opened to the delivery outlet of exhaust heat boiler 2, delivery outlet to exhaust duct is closed, second baffle valve 14 to the firing chamber 33 delivery outlet open, delivery outlet to lithium bromide unit 3 is closed, the 5th flapper valve 17 is closed to the delivery outlet of gas exhaust duct, delivery outlet to condenser 8 is opened, air enters firing chamber 33 and combustion gas mixing burning after gas compressor 32 compressions, the flue gas of producing enters turbine 33 expansion actings, flue gas after the acting enters exhaust heat boiler 2, water after processing is heated into superheated vapor, and superheated vapor is recycled into firing chamber 33 after filtering.Exhaust heat boiler 2 flue gas out enters heat exchanger 6, produces the domestic hot-water, regulates the aperture of the 4th flapper valve 16, and the output that can regulate the domestic hot-water if do not need the domestic hot-water, can be used as the feedwater of exhaust heat boiler.The vapour content in heat exchanger 6 flue gas out is a lot of under the operating mode in this, by the water that condenser 8 reclaims in heat exchanger 6 flue gas out, can open refrigerating machine 7 if ambient temperature is very high, will supply with condenser behind the water for cooling.After the recycle-water process deacidification that produces after the condensation, again recycling.
The above only is 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 modification of making, be equal to replacement, improvement etc., all should be included within the scope of the utility model protection.
Claims (9)
1. small size gas turbine distributed triple-generation system, comprise small size gas turbine, exhaust heat boiler, lithium bromide unit, the lithium bromide unit is used to the user that cold is provided, and described small size gas turbine comprises turbine, firing chamber, and air and combustion gas mixing are burnt in the firing chamber, the mixture of the steam and gas of producing enters the turbine expansion acting, flue gas after the acting is sent to exhaust heat boiler, and the water that heating exhaust heat boiler water intake passes into produces superheated vapor, it is characterized in that
The small size gas turbine distributed triple-generation system also comprises the second baffle valve, the superheated vapor that described exhaust heat boiler produces is sent to the inlet opening of described second baffle valve, one delivery outlet of described second baffle valve leads to the firing chamber of described small size gas turbine, and another delivery outlet of described second baffle valve leads to described lithium bromide unit.
2. small size gas turbine distributed triple-generation system according to claim 1, it is characterized in that, the small size gas turbine distributed triple-generation system also comprises the first flapper valve, flue gas after the acting is sent to the inlet opening of described the first flapper valve, one delivery outlet of described the first flapper valve leads to described exhaust heat boiler, and another delivery outlet of described the first flapper valve leads to gas exhaust duct.
3. small size gas turbine distributed triple-generation system according to claim 1 is characterized in that,
The small size gas turbine distributed triple-generation system also comprises generator, and air and combustion gas mixing are burnt in the firing chamber, and the mixture of the steam and gas of production enters the turbine expansion acting, by described generator output electricity;
The small size gas turbine distributed triple-generation system also comprises grid-connection device, and the electricity of described generator output is sent into electrical network through described grid-connection device.
4. small size gas turbine distributed triple-generation system according to claim 1 is characterized in that,
Described small size gas turbine also comprises gas compressor, and described gas compressor is used for air compressing is pressed into the firing chamber.
5. small size gas turbine distributed triple-generation system according to claim 1 is characterized in that,
The small size gas turbine distributed triple-generation system also comprises the temperature-adjustment pressure-adjustment device, another delivery outlet of described second baffle valve leads to described temperature-adjustment pressure-adjustment device, and described temperature-adjustment pressure-adjustment device carries out being sent to described lithium bromide unit behind the temperature-adjustment pressure-adjustment to superheated vapor;
The small size gas turbine distributed triple-generation system also comprises the 3rd flapper valve, described temperature-adjustment pressure-adjustment device carries out being sent to behind the temperature-adjustment pressure-adjustment inlet opening of described the 3rd flapper valve to superheated vapor, one delivery outlet of described the 3rd flapper valve leads to described lithium bromide unit, and another delivery outlet of described the 3rd flapper valve leads to hot duct.
6. small size gas turbine distributed triple-generation system according to claim 1 is characterized in that,
The small size gas turbine distributed triple-generation system also comprises electric refrigerating machine, the first switch, and described electric refrigerating machine gets access to grid through the first switch, is used to the user that cold is provided.
7. small size gas turbine distributed triple-generation system according to claim 1 is characterized in that,
The small size gas turbine distributed triple-generation system also comprises heat exchanger, exhaust heat boiler flue gas out is sent to the smoke inlet of described heat exchanger, described heat exchanger utilizes the waste heat in the flue gas that hot water is produced in the water heating that enters heat exchanger by the heat exchanger water intake, the hot water of producing is sent to domestic hot-water's pipeline through the heat exchanger water outlet, and heat exchanger smoke outlet flue gas out is sent to gas exhaust duct.
8. small size gas turbine distributed triple-generation system according to claim 7 is characterized in that,
The small size gas turbine distributed triple-generation system also comprises the 4th flapper valve, described heat exchanger utilizes the waste heat in the flue gas that hot water is produced in the water heating that enters heat exchanger by the heat exchanger water intake, the hot water of producing is sent to the inlet opening of described the 4th flapper valve through the heat exchanger water outlet, one delivery outlet of the 4th flapper valve leads to the water intake of described exhaust heat boiler, and another delivery outlet of the 4th flapper valve leads to domestic hot-water's pipeline;
The small size gas turbine distributed triple-generation system also comprises the 5th flapper valve, condenser;
Heat exchanger smoke outlet flue gas out is sent to the inlet opening of described the 5th flapper valve, and a delivery outlet of described the 5th flapper valve leads to gas exhaust duct, and another delivery outlet of described the 5th flapper valve leads to the smoke inlet of described condenser;
Described condenser is used for the water vapor condensation to the flue gas that enters condenser by the condenser smoke inlet, produces recycle-water, and remaining flue gas is sent to gas exhaust duct through the smoke outlet of condenser;
The small size gas turbine distributed triple-generation system also comprises water tank, water processor;
Described water processor is sent into described water tank after being used for the recycle-water that the water outlet of direct-furnish water and condenser is sent into processed;
Described water tank is used for supplying water to described exhaust heat boiler, heat exchanger;
The small size gas turbine distributed triple-generation system also comprises cold motivation;
The water intake of described cold motivation communicates with described water tank, and the water outlet of described cold motivation communicates with the water inlet of described condenser, and described cold motivation is used for the water that cold motivation water inlet the is sent into supply condenser of lowering the temperature.
9. small size gas turbine distributed triple-generation system according to claim 1 is characterized in that,
The small size gas turbine distributed triple-generation system also comprises second switch, the 6th flapper valve, gas fired boiler, the inlet opening of described the 6th flapper valve is through described second switch access combustion gas, one delivery outlet of described the 6th flapper valve leads to the fuel gas inlet of described exhaust heat boiler, and another delivery outlet of described the 6th flapper valve leads to the fuel gas inlet of described gas fired boiler;
Described gas fired boiler is used for gas-firing feedwater heating, produces steam and is transported to hot duct;
Described exhaust heat boiler also carries out afterburning by the rock gas that fuel gas inlet passes into, and the water that heating exhaust heat boiler water intake passes into produces superheated vapor.
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| CN2012204616108U CN202867001U (en) | 2012-09-11 | 2012-09-11 | Distributed cooling, heating and power combined supply system for small-sized combustion gas turbines |
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