CN205349530U - Gas turbine generating system - Google Patents
Gas turbine generating system Download PDFInfo
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- CN205349530U CN205349530U CN201620075211.6U CN201620075211U CN205349530U CN 205349530 U CN205349530 U CN 205349530U CN 201620075211 U CN201620075211 U CN 201620075211U CN 205349530 U CN205349530 U CN 205349530U
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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
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Abstract
本实用新型实施例公开了一种燃气轮机发电系统，其包括多级空气压缩系统、太阳能相变蓄热系、空气液化系统和燃气轮机发电装置。其中，多级空气压缩系统用于利用电站低谷(低价)电能，将空气经过多级压缩达到常温高压状态；太阳能相变蓄热系用于利用太阳能集热装置和相变蓄热材料收集太阳能和压缩机产生的压缩热，以提高发电阶段空气燃烧前的温度，提高系统效率；空气液化系统用于将高压空气液化，以减小空气存储体积，提高系统能量密度；燃气轮机发电装置用于利用液态空气燃烧发电。
The embodiment of the utility model discloses a gas turbine power generation system, which comprises a multi-stage air compression system, a solar phase change heat storage system, an air liquefaction system and a gas turbine power generation device. Among them, the multi-stage air compression system is used to use the power station's low-valence (low-cost) electric energy to compress the air to a normal temperature and high pressure state through multi-stage compression; the solar phase change heat storage system is used to collect solar energy by using solar heat collectors and phase change heat storage materials and the compression heat generated by the compressor to increase the temperature of the air before combustion in the power generation stage and improve system efficiency; the air liquefaction system is used to liquefy high-pressure air to reduce the volume of air storage and increase the energy density of the system; the gas turbine power generation device is used to utilize Combustion of liquid air to generate electricity.
Description
Technical field
This utility model relates to technical field of power systems, particularly relates to a kind of gas turbine generating system.
Background technology
At present, China's supply of electric power is mainly based on coal fired power generation.Along with China's expanding economy, the demand of electric power is increasing, the process of coal fired power generation creates the harmful substances such as substantial amounts of flue dust, sulfur dioxide, nitrogen oxides, causes the serious environmental problems such as acid rain, haze.Various circles of society, all seeking more environmental protection, efficient generation technology, to break away from depending on unduly coal resources, alleviate coal fired power generation pollution on the environment.
Gas turbine is that the heat discharged during fuel combustion is changed into the dynamic power machine of useful work using gas as working medium.Gas turbine power generation technology is that gas turbine utilizes the high pressure-temperature combustion gas that pressure-air and fuel mixed combustion produce to do work in combustion gas turbine, promotes blade to rotate, thus drive electrical generators generating.Mainly use natural gas as fuel due to gas turbine, with coal facies ratio, natural gas is the energy of a kind of cleaning, and energy transformation ratio is higher and pollutant emission is relatively low.Combustion of natural gas is nearly free from sulfur dioxide and particulate matter, and CO2 emissions also only have 1/3rd of coal.Therefore, gas turbine power generation technology has good market prospect and huge environmental benefit.
Owing to gas turbine power generation needs pressure-air combustion-supporting to produce the combustion gas of High Temperature High Pressure, therefore gas turbine generating set is often equipped with air compressor for obtaining pressure-air.The 60% of the generated energy of conventional gas turbine generating set is used for driving air compressor machine compression air.Therefore, provide stable source of high-pressure air can save the air compressor in gas turbine structure for Gas Turbine Generating Units, save compressed-air actuated wasted work in gas turbine, be greatly improved gas turbine output and generating efficiency.
Compressed air energy storage technology is a kind of novel energy storing technology.Its ultimate principle is: in the low power consumption phase, utilizes unnecessary electric energy driving electric machine and compressor air compression to be stored, and in peak of power consumption, is stored in the pressure-air in air storage chamber and enters expander acting, and drive electrical generators generates electricity.Unnecessary electric energy can be stored with the form compressing air internal energy by application of air energy storage technology when low power consumption, electric energy discharging when peak of power consumption electric energy supplement deficiency, thus reaching the purpose of peak load shifting, improving economy of power plant.Frequency of supply and voltage can also be regulated simultaneously, manage the quality of power supply, it is ensured that the safety of operation of power networks and electric power quality, promote the utilization of regenerative resource such as wind-powered electricity generation and solar electrical energy generation.But, conventional compression air energy storage technology needs very big air storage chamber to carry out storing compressed air, is limited by geographic, and energy density is little, cause that gas turbine power generation is inefficient.Therefore, a kind of more excellent gas turbine generating system urgently occurs.
Utility model content
This utility model embodiment provides a kind of gas turbine generating system, to solve the inefficient problem of gas turbine power generation of the prior art.
In order to solve above-mentioned technical problem, this utility model embodiment discloses following technical scheme:
A kind of gas turbine generating system, including multi-stage air compressor system, solar energy phase transition heat accumulation system, air liquefaction system and gas turbine generating set；
Described multi-stage air compressor system includes: first order air compressor, first order interstage cooler, second level air compressor, second level interstage cooler, third level air compressor, third level interstage cooler, fourth stage air compressor, fourth stage interstage cooler, wherein, the outlet of first order air compressor is connected with the hot-side inlet of first order interstage cooler, the hot junction outlet of first order interstage cooler is connected with the entrance of second level air compressor, the outlet of second level air compressor is connected with the hot-side inlet of second level interstage cooler, the hot junction outlet of second level interstage cooler is connected with the entrance of third level air compressor, the outlet of third level air compressor is connected with the hot-side inlet of third level interstage cooler, the hot junction outlet of third level interstage cooler is connected with the entrance of fourth stage air compressor, the outlet of fourth stage air compressor is connected with the hot-side inlet of fourth stage interstage cooler；
Described solar energy phase transition heat accumulation system includes: solar thermal collector, phase change heat accumulator and heat conduction oil groove, wherein, the outlet of heat conduction oil groove respectively with solar thermal collector entrance, the cold-side inlet of first order interstage cooler, the cold-side inlet of second level interstage cooler, the cold-side inlet of third level interstage cooler, the cold-side inlet of fourth stage interstage cooler is connected with the entrance of phase change heat accumulator, the outlet of solar thermal collector is connected with the entrance of phase change heat accumulator, the cold side outlet of first order interstage cooler, the cold side outlet of second level interstage cooler, the cold side outlet of third level interstage cooler is all connected with the entrance of phase change heat accumulator with the cold side outlet of fourth stage interstage cooler, first outlet of phase change heat accumulator is connected with the entrance of heat conduction oil groove；
Described air liquefaction system includes: main heat exchanger, choke valve, cryogenic liquid storage tank and cold insulated cabinet, wherein, main heat exchanger, choke valve and cryogenic liquid storage tank are respectively positioned in cold insulated cabinet, the hot-side inlet of main heat exchanger exports with the hot junction of fourth stage interstage cooler and is connected, the hot junction outlet of main heat exchanger is connected with the entrance of choke valve, the outlet of choke valve is connected with the entrance of cryogenic liquid storage tank, the outlet at bottom of cryogenic liquid storage tank is connected with the cold-side inlet of main heat exchanger, the top exit emptying of cryogenic liquid storage tank；
Described gas turbine generating set includes: regenerator, combustor, combustion gas turbine, electromotor, wherein, the cold-side inlet of regenerator is connected with the cold side outlet of main heat exchanger, the hot-side inlet of regenerator is connected with the second outlet of phase change heat accumulator, the hot junction outlet of regenerator is connected with the entrance of heat conduction oil groove, the cold side outlet of regenerator is connected with the entrance of combustor, and the outlet of combustor is connected with the entrance of combustion gas turbine, and combustion gas turbine is connected with generator shaft.
Preferably, described solar thermal collector adopts flat-plate solar heat collector.
Preferably, being filled with phase change heat storage material in described phase change heat accumulator, described phase change heat storage material is molten salts high-temperature phase change heat accumulation material, and the phase transition temperature interval of described phase change heat storage material solid-liquid is between 350K-700K.
Preferably, described main heat exchanger is wound tube heat exchanger or plate type heat exchanger.
Preferably, described cryogenic liquid storage tank is pressure vessel, and operating pressure is more than 10MPa.
From above technical scheme, a kind of gas turbine generating system that this utility model embodiment provides has the advantage that
1, the energy storage stage, solar energy heat collector is used to collect solar energy, adopt the heat of compression produced by high-temperature phase change heat accumulation material recovery compressor compresses air simultaneously, jointly heat conduction oil, thus increasing the heat being transferred to phase change heat storage material, improve phase change heat storage material temperature, power generating stage is made to increase through the conduction oil temperature of phase change heat accumulator heat exchange, indirectly improve the working heat load of regenerator, the pressure-air temperature of regenerator cold side outlet rises, reach the effect of preheated burning room air, improve the combustibility of gas turbine, improve gas turbine proficiency；
2, cryogenics is combined by this utility model with traditional air compress technique, by the air adiabatic cooling that throttling expansion will be under critical pressure state, and progressively liquefy, to improve energy storage density, reduce the storage volume of air, liquid air energy storage technology is applied to Gas Turbine Generating Units simultaneously, has both kept that gas turbine power generation power is changeable, flexibility and reliability, free of contamination advantage, make again Gas Turbine Generating Units have peak-frequency regulation concurrently, improve the function of the quality of power supply.
3, air compressor is adopted the configuration of the pressure ratio compressions such as level Four.Owing in overall pressure tatio one timing, compression situation is more big closer to adiabatic compression wasted work, and more little closer to isotherm compression wasted work, therefore, when there being interstage cooling, the more many total wasted works of compressor progression are more little, and efficiency is more high.Air compressor is adopted the configuration of the pressure ratio compressions such as level Four by this utility model, had both decreased compressor wasted work, and had avoided again compressor arrangement excessively complicated, and had reduced compressor cost, makes compressor assembly performance close to optimum.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, for those of ordinary skills, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The structural representation of a kind of gas turbine generating system that Fig. 1 provides for this utility model embodiment；
A kind of gas turbine electrical generation process schematic flow sheet that Fig. 2 provides for this utility model embodiment；
Symbol table in Fig. 1-Fig. 2 is shown as: 1-first order air compressor, 2-first order interstage cooler, 3-second level air compressor, 4-second level interstage cooler, 5-third level air compressor, 6-third level interstage cooler, 7-fourth stage air compressor, 8-fourth stage interstage cooler, 9-solar thermal collector, 10-phase change heat accumulator, 11-heat conduction oil groove, 12-main heat exchanger, 13-choke valve, 14-cryogenic liquid storage tank, 15-cold insulated cabinet, 16-regenerator, 17-combustor, 18-combustion gas turbine, 19-electromotor.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the technical scheme in this utility model, below in conjunction with the accompanying drawing in this utility model embodiment, technical scheme in this utility model embodiment is clearly and completely described, obviously, described embodiment is only a part of embodiment of this utility model, rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, all should belong to the scope of this utility model protection.
The structural representation of a kind of gas turbine generating system that Fig. 1 provides for this utility model embodiment, as it is shown in figure 1, a kind of gas turbine generating system that this utility model embodiment provides includes multi-stage air compressor system I, solar energy phase transition heat accumulation system II, air liquefaction system III and gas turbine generating set IV；
Multi-stage air compressor system includes: first order air compressor 1, first order interstage cooler 2, second level air compressor 3, second level interstage cooler 4, third level air compressor 5, third level interstage cooler 6, fourth stage air compressor 7, fourth stage interstage cooler 8, wherein, the outlet of first order air compressor 1 is connected with the hot-side inlet of first order interstage cooler 2, the hot junction outlet of first order interstage cooler 2 is connected with the entrance of second level air compressor 3, the outlet of second level air compressor 3 is connected with the hot-side inlet of second level interstage cooler 4, the hot junction outlet of second level interstage cooler 4 is connected with the entrance of third level air compressor 5, the outlet of third level air compressor 5 is connected with the hot-side inlet of third level interstage cooler 6, the hot junction outlet of third level interstage cooler 6 is connected with the entrance of fourth stage air compressor 7, the outlet of fourth stage air compressor 7 is connected with the hot-side inlet of fourth stage interstage cooler 8；
Solar energy phase transition heat accumulation system includes: solar thermal collector 9, phase change heat accumulator 10 and heat conduction oil groove 11, wherein, the outlet of heat conduction oil groove 11 respectively with solar thermal collector 9 entrance, the cold-side inlet of first order interstage cooler 2, the cold-side inlet of second level interstage cooler 4, the cold-side inlet of third level interstage cooler 6, the cold-side inlet of fourth stage interstage cooler 8 is connected with the entrance of phase change heat accumulator 10, the outlet of solar thermal collector 9 is connected with the entrance of phase change heat accumulator 10, the cold side outlet of first order interstage cooler 2, the cold side outlet of second level interstage cooler 4, the cold side outlet of third level interstage cooler 6 is all connected with the entrance of phase change heat accumulator 10 with the cold side outlet of fourth stage interstage cooler 8, first outlet of phase change heat accumulator 10 is connected with the entrance of heat conduction oil groove 11；
Air liquefaction system includes: main heat exchanger 12, choke valve 13, cryogenic liquid storage tank 14 and cold insulated cabinet 15, wherein, main heat exchanger 12, choke valve 13 and cryogenic liquid storage tank 14 are respectively positioned in cold insulated cabinet 15, the hot-side inlet of main heat exchanger 12 exports with the hot junction of fourth stage interstage cooler 8 and is connected, the hot junction outlet of main heat exchanger 12 is connected with the entrance of choke valve 13, the outlet of choke valve 13 is connected with the entrance of cryogenic liquid storage tank 14, the outlet at bottom of cryogenic liquid storage tank 14 is connected with the cold-side inlet of main heat exchanger 12, the top exit emptying of cryogenic liquid storage tank 14；
Gas turbine generating set includes: regenerator 16, combustor 17, combustion gas turbine 18, electromotor 19, wherein, the cold-side inlet of regenerator 16 is connected with the cold side outlet of main heat exchanger 12, the hot-side inlet of regenerator 16 is connected with the second outlet of phase change heat accumulator 10, the hot junction outlet of regenerator 16 is connected with the entrance of heat conduction oil groove 11, the cold side outlet of regenerator 16 is connected with the entrance of combustor 17, the outlet of combustor 17 is connected with the entrance of combustion gas turbine 18, and combustion gas turbine 18 is connected with electromotor 19 axle.
In an advantageous embodiment, the solar thermal collector 9 that this utility model embodiment provides adopts flat-plate solar heat collector, flat-plate solar heat collector to have good load performance, and the thermal efficiency is higher, safe and reliable.
In an advantageous embodiment, being filled with phase change heat storage material in the phase change heat accumulator 10 that this utility model embodiment provides, phase change heat storage material is molten salts high-temperature phase change heat accumulation material, and this phase change heat storage material solid-liquid phase change temperature range is between 550K-700K.The operation principle of phase change heat storage material is: phase change heat storage material is heat fusing near melting temperature, freeze, after conduction oil of the present utility model enters phase change heat accumulator 10 after the heating, temperature is approximately between 550K-700K, and the fusing point of molten salts is between 550K～700K, therefore select molten salts high-temperature phase change heat accumulation material.
In an advantageous embodiment, the main heat exchanger 12 that this utility model embodiment provides is wound tube heat exchanger or plate type heat exchanger.Cryogenic liquid storage tank 14 is pressure vessel, and operating pressure is more than 10MPa.
From above technical scheme, a kind of gas turbine generating system that this utility model embodiment provides includes multi-stage air compressor system, solar energy phase transition heat accumulation system, air liquefaction system and gas turbine generating set.Wherein, multi-stage air compressor system is used for utilizing power station low ebb (at a low price) electric energy, and through multi-stage compression, air is reached normal temperature high voltage state；The solar energy phase transition heat accumulation system heat of compression for utilizing solar energy heat collector and phase change heat storage material to collect solar energy and compressor produces, to improve the temperature before power generating stage air burning, improves system effectiveness；Air liquefaction system is for liquefying pressure-air, to reduce air storage volume, improves system energy densities；Gas turbine generating set is used for utilizing liquid air combustion power generation.
On the basis of said system embodiment, this utility model also provides for a kind of gas turbine electrical generation process, and the following drawings is described in detail.
A kind of gas turbine electrical generation process schematic flow sheet that Fig. 2 provides for this utility model embodiment, as in figure 2 it is shown, a kind of gas turbine electrical generation process that this utility model embodiment provides comprises the steps:
Step S100: compression air and the recovery heat of compression, specifically includes: utilize power drives first order air compressor 1, second level air compressor 3, third level air compressor 5 and fourth stage air compressor 7；
After first order air compressor 1 compresses air, air themperature raises, first order interstage cooler 2 is entered by the hot-side inlet of first order interstage cooler 2, simultaneously close off the entrance that heat conduction oil groove 11 is connected with phase change heat accumulator 10, conduction oil is discharged from heat conduction oil groove 11 outlet, cold-side inlet entrance first order interstage cooler 2 through first order interstage cooler 2, in first order interstage cooler 2, conduction oil carries out heat exchange with compression air, compression air is cooled to close to room temperature, enter second level air compressor 3, conduction oil is discharged by the cold side outlet of first order interstage cooler 2 after heating up, entrance entrance phase change heat accumulator 10 through phase change heat accumulator 10；
After second level air compressor 3 compresses air, air themperature raises, the hot-side inlet of second level interstage cooler 4 enter second level interstage cooler 4；Conduction oil is exported discharge by heat conduction oil groove 11, cold-side inlet entrance second level interstage cooler 4 through second level interstage cooler 4, in second level interstage cooler 4, conduction oil carries out heat exchange with compression air, compression air is cooled to close to room temperature, entering third level air compressor 3, conduction oil is discharged by the cold side outlet of second level interstage cooler 4 after heating up, through the entrance entrance phase change heat accumulator 10 of phase change heat accumulator 10；
After third level air compressor 5 compresses air, air themperature raises, the hot-side inlet of third level interstage cooler 6 enter third level interstage cooler 6；Conduction oil is discharged by the outlet of heat conduction oil groove 11, cold-side inlet entrance third level interstage cooler 6 through third level interstage cooler 6, in third level interstage cooler 6, conduction oil carries out heat exchange with compression air, compression air is cooled to close to room temperature, entering fourth stage air compressor 7, conduction oil is discharged by the cold side outlet of third level interstage cooler 6 after heating up, and enters phase change heat accumulator 10 through phase change heat accumulator 10 entrance；
After fourth stage air compressor 7 compresses air, air themperature raises, the hot-side inlet of fourth stage interstage cooler 8 enter fourth stage interstage cooler 8；A part of conduction oil is discharged by the outlet of heat conduction oil groove 11, cold-side inlet entrance fourth stage interstage cooler 8 through fourth stage interstage cooler 8, in fourth stage interstage cooler 8, conduction oil carries out heat exchange with compression air, compression air is cooled to close to room temperature, conduction oil is discharged by fourth stage interstage cooler 8 cold side outlet after heating up, and enters phase change heat accumulator 10 through phase change heat accumulator 10 entrance；
Simultaneously, conduction oil is discharged from heat conduction oil groove 11 outlet, enter solar thermal collector 9, in solar thermal collector 9, conduction oil absorbs solar temperature rising, phase change heat accumulator 10 is entered after intensification, in phase change heat accumulator 10, respectively by first order interstage cooler 2, second level interstage cooler 4, third level interstage cooler 6, the conduction oil discharged in fourth stage interstage cooler 8 cold side outlet mixes with the conduction oil discharged in solar thermal collector 9, phase change heat storage material in heating phase change heat accumulator 10, make it melt, the first outlet of phase change heat accumulator 10 is discharged after conduction oil is cooled, enter heat conduction oil groove 11, first order interstage cooler 2 is respectively enterd again after heat conduction oil groove 11 is cooled to room temperature, second level interstage cooler 4, third level interstage cooler 6, fourth stage interstage cooler 8 and solar thermal collector 9, realize conduction oil and absorb the heat of compression, the circulation of heating phase change heat storage material；
Step S200: carry out air liquefaction, reduces air reservoir volume, specifically includes:
Compression air discharged by fourth stage interstage cooler 8, hot junction through main heat exchanger 12, enter choke valve 13, in choke valve 13, high-pressure air pressure reduces, temperature reduces, air enters cryogenic liquid storage tank 14, first close the top exit of cryogenic liquid storage tank 14, air is discharged through cryogenic liquid storage tank 14 outlet at bottom, cold-side inlet entrance main heat exchanger 12 through main heat exchanger 12, the pressure-air heat exchange flow through with main heat exchanger 12 hot junction in the cold end of main heat exchanger 12, utilize the pressure-air in cold cooling main heat exchanger 12 hot junction of throttle effect, then discharge through the cold side outlet of main heat exchanger 12, circulate with this；The pressure-air temperature that the hot junction of main heat exchanger 12 is flow through constantly reduces, until being cooled near condensing temperature, through choke valve 13 throttle rear section liquefaction, then the top exit of cryogenic liquid storage tank 14 is opened, with ensure through cryogenic liquid storage tank 14 outlet at bottom discharge for pure liquid air, throttling process proceeds, the pressure-air temperature that main heat exchanger 12 hot junction is flow through continues to reduce, until being cooled to below condensing temperature, liquid air all it is liquefied as after choke valve 13 throttles, form the hot junction pressure-air of main heat exchanger 12 and the stable heat transfer process of the cold end liquid air of main heat exchanger 12, after heat exchange, pressure-air temperature is down to below condensing temperature, after choke valve 13 throttles, it is liquefied as liquid air, flow into low temperature liquid storage tank 14, after entering back into cold end and the pressure-air heat exchange of main heat exchanger 12 hot junction of main heat exchanger 12, become cryogenic high pressure air, cryogenic high pressure air enters regenerator 16 through regenerator 16 cold-side inlet；
Step S300: the phase change heat storage material release heat of compression in phase change heat accumulator 10 adds hot-air, specifically includes:
Opening the outlet of the heat conduction oil groove 11 being connected with phase change heat accumulator 10, conduction oil is entered in phase change heat accumulator 10 by heat conduction oil groove 11, with the phase change heat storage material generation heat exchange in phase change heat accumulator 10；Phase change heat storage material cooled and solidified becomes solid-state, conduction oil is discharged by the second outlet of phase change heat accumulator 10 after heating up, regenerator 16 is entered through regenerator 16 hot-side inlet, the cryogenic high pressure air entered with regenerator 16 cold-side inlet in regenerator 16 carries out heat exchange, and cryogenic high pressure air is heated near room temperature, after conduction oil is cooled, through regenerator 16 hot junction, outlet is discharged, enter heat conduction oil groove 11, circulate successively, to realize absorption phase-change material accumulation of heat, to discharge the heat of compression adding the cyclic process of hot-air；
Step S400: electromotor 19 generates electricity, and specifically includes:
The pressure-air of regenerator 16 cold side outlet enters combustor 17, and with natural gas mixed combining combustion in combustor 17, gaseous product enters combustion gas turbine 18 and does work, and pushing generator 19 generates electricity.
As a kind of preferred implementation, in step S100, the pressure ratio of first order air compressor 1, second level air compressor 3, third level air compressor 5 and fourth stage air compressor 7 is equal, is 3～3.2；Fourth stage interstage cooler 8 exit air pressure is 7～10MPa, and temperature is room temperature.
As a kind of preferred implementation, in step S200, the pressure-air crushing that in choke valve 13, throttle effect causes is 1～2MPa.
As a kind of preferred implementation, in step S100, power supply is the one in power station trough-electricity, wind-powered electricity generation, solar electrical energy generation, biomass power generation or combination in any.
A kind of gas turbine electrical generation process that this utility model embodiment provides, in the conventional power plant electricity price stage at a low ebb, or when regenerative resource is rationed the power supply or the quality of power supply does not meet internet access request, utilize solar energy and liquid air energy storage technology that gas turbine generating system is carried out energy storage.It is particularly as follows: apply the one or more of which power supplys such as conventional power plant low ebb (electricity price) electricity, wind-powered electricity generation, solar electrical energy generation, biomass power generation, drive first order air compressor 1, second level air compressor 3, third level air compressor 5, fourth stage air compressor 7, compress air step by step, and when peak of power consumption, electric power accident, renewable energy power generation fluctuation, utilize this gas turbine generating system to carry out gas turbine high efficiency generating.
A kind of gas turbine electrical generation process that this utility model embodiment provides includes energy storage and two stages of generating.In the energy storage stage: utilize power station low ebb (at a low price) electricity multi-stage compression air, utilize inter cooler between compressor stage to collect the heat of compression simultaneously, be stored in low-temperature storage tank after pressure-air cooling liquid；Power generating stage: enter gas turbine and the mixed combustion generating of natural gas after the liquid air pressurization of storage, intensification.This utility model, based on liquid air energy storage technology, utilizes power station low ebb (at a low price) electricity to provide compression air, eliminates gas turbine for compressing the output work that air consumes, substantially increase the generating efficiency of gas turbine.Using solar phase transformation thermal storage system simultaneously, collects heat of compressor and solar energy heating working medium, further increases system effectiveness.
This utility model utilizes solar energy and liquid air energy storage technology to improve gas turbine power generation efficiency, in the energy storage stage, use solar thermal collector and high-temperature phase change heat accumulation material to collect the heat of compression and solar energy, reached the effect of preheated burning room air, improve gas turbine proficiency.Cryogenics is combined with traditional air compress technique simultaneously, by air adiabatic cooling and progressively liquefied by throttling expansion, raising energy storage density so that Gas Turbine Generating Units not only flexibility and reliability but also have peak-frequency regulation concurrently, improve the function of the quality of power supply.Air compressor is adopted the configuration of the pressure ratio compressions such as level Four simultaneously.Both decreased compressor wasted work, and avoided again compressor arrangement excessively complicated, reduce compressor cost, and made compressor assembly performance close to optimum.
It should be noted that, in this article, the such as relational terms of " first " and " second " or the like is used merely to separate an entity or operation with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include the process of a series of key element, method, article or equipment not only include those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this process, method, article or equipment.When there is no more restriction, statement " including ... " key element limited, it is not excluded that there is also other identical element in including the process of described key element, method, article or equipment.
The above is only detailed description of the invention of the present utility model, makes to skilled artisans appreciate that or realize this utility model.The multiple amendment of these embodiments be will be apparent to one skilled in the art, and generic principles defined herein when without departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (5)
1. a gas turbine generating system, it is characterised in that include multi-stage air compressor system (I), solar energy phase transition heat accumulation system (II), air liquefaction system (III) and gas turbine generating set (IV)；
Described multi-stage air compressor system (I) including: first order air compressor (1), first order interstage cooler (2), second level air compressor (3), second level interstage cooler (4), third level air compressor (5), third level interstage cooler (6), fourth stage air compressor (7), fourth stage interstage cooler (8), wherein, the outlet of first order air compressor (1) is connected with the hot-side inlet of first order interstage cooler (2), the hot junction outlet of first order interstage cooler (2) is connected with the entrance of second level air compressor (3), the outlet of second level air compressor (3) is connected with the hot-side inlet of second level interstage cooler (4), the hot junction outlet of second level interstage cooler (4) is connected with the entrance of third level air compressor (5), the outlet of third level air compressor (5) is connected with the hot-side inlet of third level interstage cooler (6), the hot junction outlet of third level interstage cooler (6) is connected with the entrance of fourth stage air compressor (7), the outlet of fourth stage air compressor (7) is connected with the hot-side inlet of fourth stage interstage cooler (8)；
Described solar energy phase transition heat accumulation system (II) including: solar thermal collector (9), phase change heat accumulator (10) and heat conduction oil groove (11), wherein, the outlet of heat conduction oil groove (11) respectively with solar thermal collector (9) entrance, the cold-side inlet of first order interstage cooler (2), the cold-side inlet of second level interstage cooler (4), the cold-side inlet of third level interstage cooler (6), the cold-side inlet of fourth stage interstage cooler (8) is connected with the entrance of phase change heat accumulator (10), the outlet of solar thermal collector (9) is connected with the entrance of phase change heat accumulator (10), the cold side outlet of first order interstage cooler (2), the cold side outlet of second level interstage cooler (4), the cold side outlet of third level interstage cooler (6) is all connected with the entrance of phase change heat accumulator (10) with the cold side outlet of fourth stage interstage cooler (8), first outlet of phase change heat accumulator (10) is connected with the entrance of heat conduction oil groove (11)；
Described air liquefaction system (III) including: main heat exchanger (12), choke valve (13), cryogenic liquid storage tank (14) and cold insulated cabinet (15), wherein, main heat exchanger (12), choke valve (13) and cryogenic liquid storage tank (14) are respectively positioned in cold insulated cabinet (15), the hot-side inlet of main heat exchanger (12) exports with the hot junction of fourth stage interstage cooler (8) and is connected, the hot junction outlet of main heat exchanger (12) is connected with the entrance of choke valve (13), the outlet of choke valve (13) is connected with the entrance of cryogenic liquid storage tank (14), the outlet at bottom of cryogenic liquid storage tank (14) is connected with the cold-side inlet of main heat exchanger (12), the top exit emptying of cryogenic liquid storage tank (14)；
Described gas turbine generating set (IV) including: regenerator (16), combustor (17), combustion gas turbine (18), electromotor (19), wherein, the cold-side inlet of regenerator (16) is connected with the cold side outlet of main heat exchanger (12), the hot-side inlet of regenerator (16) is connected with the second outlet of phase change heat accumulator (10), the hot junction outlet of regenerator (16) is connected with the entrance of heat conduction oil groove (11), the cold side outlet of regenerator (16) is connected with the entrance of combustor (17), the outlet of combustor (17) is connected with the entrance of combustion gas turbine (18), combustion gas turbine (18) is connected with electromotor (19) axle.
2. gas turbine generating system according to claim 1, it is characterised in that described solar thermal collector (9) adopts flat-plate solar heat collector.
3. gas turbine generating system according to claim 1, it is characterized in that, described phase change heat accumulator is filled with phase change heat storage material in (10), described phase change heat storage material is molten salts high-temperature phase change heat accumulation material, and the phase transition temperature interval of described phase change heat storage material solid-liquid is between 350K-700K.
4. gas turbine generating system according to claim 1, it is characterised in that described main heat exchanger (12) is wound tube heat exchanger or plate type heat exchanger.
5. gas turbine generating system according to claim 1, it is characterised in that described cryogenic liquid storage tank (14) is pressure vessel, operating pressure is more than 10MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620075211.6U CN205349530U (en) | 2016-01-26 | 2016-01-26 | Gas turbine generating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620075211.6U CN205349530U (en) | 2016-01-26 | 2016-01-26 | Gas turbine generating system |
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| CN205349530U true CN205349530U (en) | 2016-06-29 |
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| CN201620075211.6U Withdrawn - After Issue CN205349530U (en) | 2016-01-26 | 2016-01-26 | Gas turbine generating system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545486A (en) * | 2016-01-26 | 2016-05-04 | 云南电网有限责任公司电力科学研究院 | Power generating system and method of gas turbine |
| WO2018218617A1 (en) * | 2017-06-01 | 2018-12-06 | 中国科学院工程热物理研究所 | Staged cold energy storage type supercritical compressed air energy storage system and method |
| CN109539229A (en) * | 2018-12-21 | 2019-03-29 | 中冶南方都市环保工程技术股份有限公司 | A kind of waste incineration and generating electricity heat energy recycling system of air compressor |
-
2016
- 2016-01-26 CN CN201620075211.6U patent/CN205349530U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105545486A (en) * | 2016-01-26 | 2016-05-04 | 云南电网有限责任公司电力科学研究院 | Power generating system and method of gas turbine |
| WO2018218617A1 (en) * | 2017-06-01 | 2018-12-06 | 中国科学院工程热物理研究所 | Staged cold energy storage type supercritical compressed air energy storage system and method |
| US11892234B2 (en) | 2017-06-01 | 2024-02-06 | Institute Of Engineering Thermophysics, Chinese Academy Of Sciences | Staged cryogenic storage type supercritical compressed air energy storage system and method |
| CN109539229A (en) * | 2018-12-21 | 2019-03-29 | 中冶南方都市环保工程技术股份有限公司 | A kind of waste incineration and generating electricity heat energy recycling system of air compressor |
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