CN203518328U - Compressed gas distribution type energy system using rare gas as working media - Google Patents
Compressed gas distribution type energy system using rare gas as working media Download PDFInfo
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- CN203518328U CN203518328U CN201320530346.3U CN201320530346U CN203518328U CN 203518328 U CN203518328 U CN 203518328U CN 201320530346 U CN201320530346 U CN 201320530346U CN 203518328 U CN203518328 U CN 203518328U
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Abstract
The utility model discloses a compressed gas distribution type energy system using rare gas as working media. The compressed gas distribution type energy system mainly aims to meet the heat capacity and cooling capacity requirement of users, the heat capacity and the cooling capacity are supplied by means of process heat produced by compressed gas and low-temperature cooling capacity caused by gas expansion, and meanwhile definite electricity is output in an auxiliary mode. The compressed gas distribution type energy system uses the rare gas as the working media, by means of state changes of gaseous state-supercritical state-gaseous state of the rare gas, design difficulty of the compressed gas distribution type energy system is effectively reduced, and energy-saving system cost is reduced, and operation safety and stability of the system are guaranteed. Meanwhile, system progressional changes are achieved by switching valves, and the cool and heat electricity output quantity of the system is controlled so that balance of supply and demand of the heat capacity and the cooling capacity can be achieved. According to the system, wind energy, solar energy and other renewable energy sources are used in a combined mode, other pollutants are not produced in an operation process, and better energy-saving and environment-friendly benefits are achieved.
Description
Technical field
The utility model relates to energy storage technology and distributing-supplying-energy technology field, specifically, is a kind ofly to take compressed air energy storage technology as basis, utilizes realizing and take heat supply, cold as main across critical characteristic of rare gas, and power supply is auxiliary distributed energy resource system.
Background technology
Electric, hot, cold is to maintain human social development and three kinds of progressive important form of energy.Generally speaking, electric energy is the most crucial energy of human society, is also the form of energy that supply is the most sufficient simultaneously, and electric energy not only can directly be supplied user, can also utilize other devices to be converted into heat energy or cold energy.And along with human living standard's raising, the mankind raise to the requirement of life comfort level, therefore the demand of hot and cold is sharply increased.Although electric energy can be converted into heat energy or cold energy, the reduction of the energy grade that this process causes has caused the serious waste of the energy.Therefore, pay the utmost attention to and meet user's heat energy and the important goal that cold energy demand is following distributing-supplying-energy system using energy source.
Compressed air energy storage technology is that grow up in five sixties of last century a kind of be take gas turbine technology as basic energy storage technologies, by some scholars, is excavated out it for the potentiality in distributed energy supply field at present.Main method is that air is compressed, and utilizes fossil fuel heated compressed air to complete the generating of doing work of expanding, and the air that turbine outlet temperature is higher (400-600K) freezes respectively and heat supply.Which has effectively been utilized the used heat of turbine outlet air, has reduced the waste of energy, has improved the whole efficiency of system.But it has also inevitably caused problem of environmental pollution to the utilization of fossil fuel.Therefore, how to reduce or avoid energy-storage system to realize to the utilization of fossil energy the important directions that supply of cooling, heating and electrical powers is also energy storage technology future development.
In traditional compressed air energy storage technology, meeting production process heat when compressor compresses air, but this part heat is generally all cooled, water is taken away and is slatterned; If pressure is higher, the air that temperature is lower expands, and not only can obtain certain electric weight output, and decompressor outlet air temperature is lower simultaneously, can be used in theory refrigeration.Therefore there is the possibility of not utilizing fossil fuel and realizing supply of cooling, heating and electrical powers in compressed air energy storage technology.But, for medium for compressed air energy storage technology---air, its convenient sources, reserves are sufficient, and have certain compressibility, but because its density is less, critical pressure, temperature are higher, in the time need to being compressed to elevated pressures, can cause complicated and difficultization of the design of turbomachinery, and not reach the storage volume needing under supercriticality also larger, therefore cause energy-storage system difficult design, cost higher.Simultaneously due to inside air complicated components, easily there is liquefaction and component separation case when carrying out swell refrigeration under low-temperature condition, affect the security of operation of system, this is to take air to carry out the subject matter that the compressed-air energy-storage system of supply of cooling, heating and electrical powers faces as storage medium.Therefore, if energy storage technology can be larger with density, and the pure gas of easily realizing supercriticality is working medium, just can avoid the generation of the problems referred to above.
The inert gas that the rare gas of take is representative is that a kind of working medium that meets above-mentioned requirements is selected.Rare gas general using air separation technology is separated from air as accessory substance, equal colourless, tasteless, the odorless of rare gas under normal temperature and normal pressure, and chemical property is nearly all inertia, its critical parameters are as shown in table 1.Can find out, the critical pressure of rare gas is less, when being compressed to 60atm and temperature and being environment temperature, rare gas can be changed into supercriticality, its density also than the compressed air under same state large tens times to hundred times, have the double grading of gas and liquid simultaneously concurrently, there is better mobility and transmission characteristic.Consider the above-mentioned outstanding physics and chemistry characteristic of rare gas, when take compressed air energy storage technology as basis, take any one rare gas during as storage medium, not only can utilize the high density characteristic of rare gas to reduce as the design difficulty of the system core parts such as turbomachinery, heat exchanger, air accumulator, reduce the storage size of energy-storage system, greatly reduce R&D costs and the maintenance cost of system, security and operability that the air liquefaction that still can avoid Cryogenic air to expand causing and component separation problem further strengthen system.
Table 1 inert gas critical parameters
| Inert gas | Critical pressure/kPa | Critical-temperature/K | Density/(kg/m 3) |
| Helium | 227.5 | 5.2014 | 69.64 |
| Neon | 2654 | 44.40 | 483 |
| Argon gas | 4898 | 150.86 | 535.7 |
| Krypton | 5502 | 209.4 | 908 |
| Xenon | 5840 | 289.74 | 1100 |
To sum up, native system is for the problems referred to above, realizes and take compressed air energy storage technology as basis, utilizes realizing and take heat supply, cold as main across critical characteristic of rare gas, and power supply is auxiliary distributed energy resource system.
Summary of the invention
The utility model relates to a kind of Compressed Gas distributed energy resource system that any one rare gas is storage medium of take, utilize respectively compression process and the expansion process of rare gas to complete heat storage and cold storage, and export certain electric weight, solve user to hot, cold, electric demand, simultaneity factor does not need to use fossil fuel, does not produce the pollution gas such as greenhouse gases and sulfide, nitride.
The utility model is that the technical scheme that its technical problem of solution is taked is:
The Compressed Gas distributed energy resource system that the rare gas of take is storage medium, comprising: rare gas feeding unit, rare gas compressed energy-storage unit, rare gas expand and releases energy unit, heat-carrying agent closed circuit, it is characterized in that,
Described rare gas feeding unit comprises normal pressure rare gas memory;
Described rare gas compressed energy-storage unit comprises low-pressure stage compressor, medium pressure grade compressor, hiigh pressure stage compressor and gases at high pressure air accumulator, wherein,
--the air inlet of described low-pressure stage compressor is communicated with the gas outlet of described normal pressure rare gas memory by pipeline, the gases at high pressure that described low-pressure stage compressor produces are through the hot fluid rear flank of low-pressure stage cooler, a part passes into described gases at high pressure air accumulator through the gas piping with compression end low-pressure stage switch valve, and another part is through passing into the air inlet of described medium pressure grade compressor with the gas piping of open/quick-closing valve of compression end low-pressure stage speed;
--the gases at high pressure that described medium pressure grade compressor produces pass the hot fluid rear flank of medium pressure grade cooler, a part passes into described gases at high pressure air accumulator through the gas piping with compression end medium pressure grade switch valve, and another part is through passing into the air inlet of described hiigh pressure stage compressor with the gas piping of open/quick-closing valve of compression end medium pressure grade speed;
--the gases at high pressure that described hiigh pressure stage compressor produces pass the hot fluid rear flank of hiigh pressure stage cooler, through the gas piping with compression end hiigh pressure stage switch valve, pass into described gases at high pressure air accumulator;
Described rare gas expands and releases and can comprise hiigh pressure stage decompressor, medium pressure grade decompressor and low-pressure stage decompressor in unit, wherein,
--the gases at high pressure that described gases at high pressure air accumulator stores, a part passes into hiigh pressure stage heat exchanger cold fluid rear flank through being provided with the gas piping of expanding end hiigh pressure stage switch valve passes into described hiigh pressure stage decompressor, and another part passes into described hiigh pressure stage decompressor through being provided with the gas piping of open/quick-closing valve of expanding end hiigh pressure stage speed;
--the gas after described hiigh pressure stage decompressor expands, a part passes into cold storage tank through the gas piping with expanding end medium pressure grade switch valve, the cold fluid rear flank that another part passes into medium pressure grade heat exchanger through the gas piping with open/quick-closing valve of expanding end medium pressure grade speed enters described medium pressure grade decompressor
--the gas after described medium pressure grade decompressor expands, a part passes into cold storage tank through the gas piping with expanding end low-pressure stage switch valve, the cold fluid rear flank that another part passes into low-pressure stage heat exchanger through the gas piping with open/quick-closing valve of expanding end low-pressure stage speed enters described low-pressure stage decompressor
--gas after described low-pressure stage decompressor expands flows into normal pressure rare gas memory after by cold storage tank;
Described heat-carrying agent closed circuit comprises heat-carrying agent charging-tank, heat storage can, the cold fluid rear flank that heat-carrying agent in described heat-carrying agent charging-tank passes into respectively low-pressure stage cooler, medium pressure grade cooler, hiigh pressure stage cooler by the road enters described heat storage can, and the hot fluid rear flank that the heat-carrying agent in described heat storage can passes into respectively hiigh pressure stage heat exchanger, medium pressure grade heat exchanger, low-pressure stage heat exchanger by the road enters described heat-carrying agent charging-tank.
Further, described heat-carrying agent charging-tank divides heat-carrying agent by a common low temperature heat-carrying agent supply line cold flow side of delivering to low-pressure stage cooler, medium pressure grade cooler, hiigh pressure stage cooler, on the supply line between described low-pressure stage cooler and medium pressure grade cooler, be provided with medium pressure grade cooler switch valve, on the supply line between described medium pressure grade cooler and hiigh pressure stage cooler, be provided with hiigh pressure stage cooler switch valve.
Further, described heat storage can is sent heat-carrying agent to hiigh pressure stage heat exchanger by a common high temperature heat-carrying agent supply line, medium pressure grade heat exchanger, the hot-fluid side of low-pressure stage heat exchanger, on described supply line, be serially connected with hiigh pressure stage heat exchanger switch valve, medium pressure grade heat exchanger switch valve, low-pressure stage heat exchanger switch valve, wherein, described hiigh pressure stage heat exchanger switch valve is arranged on the supply line between described heat storage can and hiigh pressure stage heat exchanger, described medium pressure grade heat exchanger switch valve is arranged on the supply line between described hiigh pressure stage heat exchanger and medium pressure grade heat exchanger, described low-pressure stage heat exchanger switch valve is arranged on the supply line between described medium pressure grade heat exchanger and low-pressure stage heat exchanger.
Further, described heat storage can is in order to supplying heat with hot cell, described with hot cell comprise the hot user that connects successively by pipeline, with hot junction heat-carrying agent charging-tank, use hot junction switch valve, wherein, hot user and with being provided with the hot heat exchanger components of using through described heat storage can part with pipe line between the switch valve of hot junction.
Further, describedly with hot cell, also comprise and use hot junction control system, the heat of using in order to control and regulation with the aperture of hot junction switch valve and hot user.
Further, the pipeline at the hot fluid side outlet place of described low-pressure stage cooler is provided with compression end low-pressure stage check-valves.
Further, the pipeline at the hot fluid side outlet place of described medium pressure grade cooler is provided with compression end medium pressure grade check-valves.
Further, the pipeline at the hot fluid side outlet place of described hiigh pressure stage cooler is provided with compression end hiigh pressure stage check-valves.
Further, the pipeline at the air inlet place of described gases at high pressure air accumulator is provided with safety valve.
Further, the pipeline at place, the gas outlet of described gases at high pressure air accumulator is provided with expanding end hiigh pressure stage check-valves.
Further, the pipeline at place, the gas outlet of described hiigh pressure stage decompressor is provided with expanding end medium pressure grade check-valves.
Further, the pipeline at place, the gas outlet of described medium pressure grade decompressor is provided with expanding end low-pressure stage check-valves.
Further, the gas piping between described cold storage tank and rare gas memory is provided with pressure-reducing valve, and/or filter, and/or drier.
Further, described low-pressure stage compressor, medium pressure grade compressor, hiigh pressure stage compressor are respectively by low-pressure stage motor, medium pressure grade motor, hiigh pressure stage Motor Drive.
Further, described hiigh pressure stage decompressor, medium pressure grade decompressor, low-pressure stage decompressor drive respectively hiigh pressure stage generator, medium pressure grade generator, low-pressure stage generator.
Further, described rare gas memory and the rare gas gas piping of releasing between can unit that expands is provided with cold storage tank, and described cold storage tank is in order to supplying cold with cold unit.
Further, the cold unit of described use comprises use cold junction refrigerating medium charging-tank, use cold junction switch valve, the colod-application family connecting successively by pipeline, wherein, with the cold pipeline of use between cold junction switch valve and colod-application family, be provided with the cold heat exchanger components of using through described cold storage tank part.
Further, the cold unit of described use also comprises uses cold junction control system, the cold of using in order to control and regulation with the aperture of cold junction switch valve and colod-application family.
A kind of possible specific operation process of the present utility model is:
The atmospheric pressure state rare gas of storing in normal pressure rare gas memory, enters low-pressure stage compressor and compresses, and low-pressure stage compressor is driven by low-pressure stage motor, and the electric energy of motor can be from regenerative resources such as wind energies.Rare gas is after the compression of low-pressure stage compressor, and pressure raises, and temperature raises, and enters low-pressure stage cooler and carries out exchange heat, reduces temperature, and the medium that heat-carrying agent charging-tank provides simultaneously enters in low-pressure stage heat exchanger collects heat, is stored in heat storage can.
If heat can meet use in heat storage can, compression end low-pressure stage switch valve is opened, open/quick-closing valve of compression end low-pressure stage speed is closed, and rare gas enters gases at high pressure air accumulator by compression end low-pressure stage check-valves, compression end low-pressure stage switch valve, safety valve successively; If caloric requirement continues to supplement in heat storage can, compression end low-pressure stage switch valve cuts out, open/quick-closing valve of compression end low-pressure stage speed is opened, rare gas enters medium pressure grade compressor by compression end low-pressure stage check-valves, open/quick-closing valve of compression end low-pressure stage speed successively, and medium pressure grade compressor is driven by medium pressure grade motor.Medium pressure grade blower outlet rare gas enters medium pressure grade heat exchanger and completes exchange heat, and temperature reduces, and medium pressure grade heat exchanger switch valve is opened simultaneously, and the medium that heat-carrying agent charging-tank provides enters in medium pressure grade heat exchanger and collects heat, and is stored in heat storage can.
If heat can meet use in heat storage can, compression end medium pressure grade switch valve is opened, open/quick-closing valve of compression end medium pressure grade speed is closed, and rare gas enters gases at high pressure air accumulator by compression end medium pressure grade check-valves, compression end medium pressure grade switch valve, safety valve successively; If caloric requirement continues to supplement in heat storage can, compression end medium pressure grade switch valve cuts out, open/quick-closing valve of compression end medium pressure grade speed is opened, rare gas enters hiigh pressure stage compressor by compression end medium pressure grade check-valves, open/quick-closing valve of compression end medium pressure grade speed successively, and hiigh pressure stage compressor is driven by hiigh pressure stage motor.Hiigh pressure stage blower outlet rare gas enters hiigh pressure stage heat exchanger and completes exchange heat, and temperature reduces, and hiigh pressure stage heat exchanger switch valve is opened simultaneously, and the medium that heat-carrying agent charging-tank provides enters in hiigh pressure stage heat exchanger and collects heat, and is stored in heat storage can.
After the compression of hiigh pressure stage compressor, compression end hiigh pressure stage switch valve is opened, and rare gas is entered gases at high pressure air accumulator and stored by compression end hiigh pressure stage check-valves, compression end hiigh pressure stage switch valve, safety valve successively.So far, offer pressure energy that the electric energy conversion of system is rare gas and the heat energy in heat storage can.
When hot user needs heat, by hot junction control system, carry out workload demand regulation and control, with hot junction switch valve, open, with hot junction heat-carrying agent charging-tank, provide heat-carrying agent, via sending into hot user after heat storage can absorption heat, complete heat supply, the medium after cooling returns with hot junction heat-carrying agent charging-tank.
Externally doing work and producing the cold stage, system can be according to user side to the storing heat value in the selective recovery heat storage can of the demand of cold and electric weight.
When electric weight demand is less or other modes obtain electric power supply is sufficient, hiigh pressure stage heat exchanger switch valve cuts out, expanding end hiigh pressure stage switch valve cuts out, open/quick-closing valve of expanding end hiigh pressure stage speed is opened, the rare gas that gases at high pressure air accumulator discharges enters hiigh pressure stage decompressor by expanding end hiigh pressure stage check-valves, open/quick-closing valve of expanding end hiigh pressure stage speed successively, promote hiigh pressure stage decompressor and externally do work, hiigh pressure stage decompressor drives hiigh pressure stage generator externally to generate electricity by rotating shaft.
If hiigh pressure stage decompressor Outlet Gas Temperature is enough low, open/quick-closing valve of expanding end medium pressure grade speed is closed, expanding end medium pressure grade switch valve is opened, and hiigh pressure stage decompressor exit gas enters cold storage tank by expanding end medium pressure grade check-valves, expanding end medium pressure grade switch valve successively; If hiigh pressure stage decompressor Outlet Gas Temperature is low not, open/quick-closing valve of expanding end medium pressure grade speed is opened, expanding end medium pressure grade switch valve cuts out, hiigh pressure stage decompressor exit gas enters medium pressure grade decompressor by expanding end medium pressure grade check-valves, open/quick-closing valve of expanding end medium pressure grade speed, medium pressure grade heat exchanger successively, promote medium pressure grade decompressor and externally do work, medium pressure grade decompressor drives medium pressure grade generator externally to generate electricity by rotating shaft.
If medium pressure grade decompressor Outlet Gas Temperature is enough low, open/quick-closing valve of expanding end low-pressure stage speed is closed, expanding end low-pressure stage switch valve is opened, and medium pressure grade decompressor exit gas enters cold storage tank by expanding end low-pressure stage check-valves, expanding end low-pressure stage switch valve successively; If medium pressure grade decompressor Outlet Gas Temperature is low not, open/quick-closing valve of expanding end low-pressure stage speed is opened, expanding end low-pressure stage switch valve cuts out, medium pressure grade decompressor exit gas enters low-pressure stage decompressor by expanding end low-pressure stage check-valves, open/quick-closing valve of expanding end low-pressure stage speed, low-pressure stage heat exchanger successively, promote low-pressure stage decompressor and externally do work, low-pressure stage decompressor drives low-pressure stage generator externally to generate electricity by rotating shaft.Low-pressure stage decompressor exit gas will enter cold storage tank cooling, then through pressure-reducing valve, filter, drier, turn back to normal pressure rare gas memory successively.
When colod-application family needs cold, by cold junction control system, carry out workload demand regulation and control, with cold junction switch valve, open, with cold junction refrigerating medium charging-tank, provide refrigerating medium, via sending into colod-application family after cold storage tank absorption cold, complete cold supply, the medium after intensification returns with cold junction refrigerating medium charging-tank.
When electric weight demand is bigger than normal, refrigeration requirement is less and other modes obtain electric power supply is not enough, hiigh pressure stage heat exchanger switch valve is opened, expanding end hiigh pressure stage switch valve is opened, open/quick-closing valve of expanding end hiigh pressure stage speed is closed, the rare gas that gases at high pressure air accumulator discharges enters hiigh pressure stage heat exchanger by expanding end hiigh pressure stage check-valves, expanding end hiigh pressure stage switch valve successively and completes intensification, the heat-carrying agent of heat storage can supply enters hiigh pressure stage heat exchanger by hiigh pressure stage heat exchanger switch valve and completes the exchange heat with rare gas, returns to subsequently heat-carrying agent charging-tank.Rare gas after intensification enters hiigh pressure stage decompressor, promotes hiigh pressure stage decompressor and externally does work, and hiigh pressure stage decompressor drives hiigh pressure stage generator externally to generate electricity by rotating shaft.
If do not need, continue to supplement supply of electric power, open/quick-closing valve of expanding end medium pressure grade speed is closed, expanding end medium pressure grade switch valve is opened, and hiigh pressure stage decompressor exit gas enters cold storage tank by expanding end medium pressure grade check-valves, expanding end medium pressure grade switch valve successively and completes cold and store; If desired continue to supplement supply of electric power, open/quick-closing valve of expanding end medium pressure grade speed is opened, expanding end medium pressure grade switch valve cuts out, hiigh pressure stage decompressor exit gas is entered medium pressure grade heat exchanger and is completed intensification by expanding end medium pressure grade check-valves, open/quick-closing valve of expanding end medium pressure grade speed successively, now medium pressure grade heat exchanger switch valve is opened, the heat-carrying agent of heat storage can supply enters medium pressure grade heat exchanger after by hiigh pressure stage heat exchanger switch valve, medium pressure grade heat exchanger switch valve and completes the exchange heat with rare gas, returns to subsequently heat-carrying agent charging-tank.Rare gas after intensification enters medium pressure grade decompressor, promotes medium pressure grade decompressor and externally does work, and medium pressure grade decompressor drives medium pressure grade generator externally to generate electricity by rotating shaft.
If do not need, continue to supplement supply of electric power, open/quick-closing valve of expanding end low-pressure stage speed is closed, expanding end low-pressure stage switch valve is opened, and medium pressure grade decompressor exit gas enters cold storage tank by expanding end low-pressure stage check-valves, expanding end low-pressure stage switch valve successively and completes cold and store, if desired continue to supplement supply of electric power, open/quick-closing valve of expanding end low-pressure stage speed is opened, expanding end low-pressure stage switch valve cuts out, medium pressure grade decompressor exit gas is successively by expanding end low-pressure stage check-valves, open/quick-closing valve of expanding end low-pressure stage speed enters low-pressure stage heat exchanger and completes intensification, now low-pressure stage heat exchanger switch valve is opened, the heat-carrying agent of heat storage can supply is by hiigh pressure stage heat exchanger switch valve, medium pressure grade heat exchanger switch valve, after low-pressure stage heat exchanger switch valve, enter low-pressure stage heat exchanger and complete the exchange heat with rare gas, return to subsequently heat-carrying agent charging-tank.Rare gas after intensification enters low-pressure stage decompressor, promotes low-pressure stage decompressor and externally does work, and low-pressure stage decompressor drives low-pressure stage generator externally to generate electricity by rotating shaft.Low-pressure stage decompressor exit gas is after cold storage tank cooling, then process pressure-reducing valve, filter, drier turn back to normal pressure rare gas memory successively.
To sum up, at thermal energy storage process, this system can utilize switch valve and the open/quick-closing valve of speed before every grade of compressor air inlet machine to control the progression compressing, to control the final pressure of gas and the memory space of heat, the calorie value of storage can be distributed to hot user and return to gases at high pressure according to hot user's demand is selective; In exoergic process, this system can be according to user the demand to electric weight and cold, utilize switch valve before every grade of decompressor air inlet and open/quick-closing valve of speed to control to expand and the progression of heat again, complete the supply of cold and electric weight.Consider the convenience that is obtained supply of electric power by other modes, exoergic process can reduce the return of heat to gases at high pressure in thermal storage device, and system is supplied as master with cold, and supply of electric power is auxiliary, and which also can guarantee hot user's the heat of using.
Advantage of the present utility model and beneficial effect are:
1, the utility model is usingd rare gas and is replaced air as the storage medium of energy storage technology, utilize the feature of the low critical pressure of rare gas, low critical-temperature, in energy storage to releasing the change procedure that can the stage complete the gaseous state-supercriticality-gaseous state of rare gas, with respect to take the energy-storage system that air is medium, the storage volume of the rare gas under supercriticality is less, reduced system cost, and pure gas be working medium can assurance system stability and the security of operation.
2, the utility model be take the working media of rare gas as Compressed Gas energy-storage system, by the higher feature of its density, compare the problems such as the energy-storage system complicated integral structure, difficult design, the cost that adopt compression and expansion air to cause are higher, the rare gas of take can obviously reduce system core parts as the design difficulty of turbomachinery, heat exchanger, air accumulator as working media, reduction system scale, and then greatly reduce system cost.
3, the utility model can change the supply of hot and cold according to the demand control system method of operation of hot, electric, cold demand, especially hot and cold, reduces the not generation of match condition between hot and cold amount supply and demand, avoids the waste of energy; Also can user, to energy requirement, hour complete the storage of hot and cold, realize the instant supply of cold-peace heat in future time.
4, the utility model electric power of can having more than needed is energy source, also can wind energy etc. the regenerative resource power source that is system, and can solar energy be system supplymentary heat supply, guarantee the heat, electricity of system, cold supply.Whole system does not produce the material of any contaminated environment in running engineering, and Ke Yu steam power plant combines use, also can be used for isolated island, independent building or community, is genuine environmental protection, energy conserving system.
Accompanying drawing explanation
Fig. 1 is of the present utility model take the Compressed Gas distributed energy resource system schematic diagram that rare gas is working medium.
The specific embodiment
For making object, technical scheme and the advantage of this energy-storage system clearer, referring to the accompanying drawing embodiment that develops simultaneously, the utility model is further described.
As shown in Figure 1, of the present utility modelly take the Compressed Gas distributed energy resource system that rare gas is working medium, by normal pressure rare gas memory 1, low-pressure stage compressor 2, medium pressure grade compressor 3, hiigh pressure stage compressor 4, low-pressure stage motor 5, medium pressure grade motor 6, hiigh pressure stage motor 7, low-pressure stage cooler 8, medium pressure grade cooler 9, hiigh pressure stage cooler 10, compression end low-pressure stage check-valves 11, compression end medium pressure grade check-valves 12, compression end hiigh pressure stage check-valves 13, compression end low-pressure stage switch valve 14, compression end medium pressure grade switch valve 15, compression end hiigh pressure stage switch valve 16, open/quick-closing valve of compression end low-pressure stage speed 17, open/quick-closing valve of compression end medium pressure grade speed 18, medium pressure grade cooler switch valve 19, hiigh pressure stage cooler switch valve 20, safety valve 21, gases at high pressure air accumulator 22, heat-carrying agent charging-tank 23, heat storage can 24, by hot junction control system 25, with hot junction heat-carrying agent charging-tank 26, with hot junction switch valve 27, hot user 28, expanding end hiigh pressure stage check-valves 29, expanding end medium pressure grade check-valves 30, expanding end low-pressure stage check-valves 31, expanding end hiigh pressure stage switch valve 32, expanding end medium pressure grade switch valve 33, expanding end low-pressure stage switch valve 34, open/quick-closing valve of expanding end hiigh pressure stage speed 35, open/quick-closing valve of expanding end medium pressure grade speed 36, open/quick-closing valve of expanding end low-pressure stage speed 37, hiigh pressure stage heat exchanger 38, medium pressure grade heat exchanger 39, low-pressure stage heat exchanger 40, hiigh pressure stage decompressor 41, medium pressure grade decompressor 42, low-pressure stage decompressor 43, hiigh pressure stage generator 44, medium pressure grade generator 45, low-pressure stage generator 46, hiigh pressure stage heat exchanger switch valve 47, medium pressure grade heat exchanger switch valve 48, low-pressure stage heat exchanger switch valve 49, cold storage tank 50, by cold junction control system 51, with cold junction switch valve 52, with cold junction refrigerating medium charging-tank 53, colod-application family 54, pressure-reducing valve 55, filter 56, drier 57 compositions such as grade, specific operation process is:
In normal pressure rare gas memory 1, the atmospheric pressure state rare gas of storage, enters low-pressure stage compressor 2 and compresses, and low-pressure stage compressor 2 is driven by low-pressure stage motor 5, and the electric energy of motor 5 can be from regenerative resources such as wind energies.Rare gas is after 2 compressions of low-pressure stage compressor, and pressure raises, and temperature raises, enter low-pressure stage cooler 8 and carry out exchange heat, reduce temperature, the medium that heat-carrying agent charging-tank 23 provides simultaneously enters in low-pressure stage heat exchanger 8 collects heat, is stored in heat storage can 24.
If heat can meet use in heat storage can 24, compression end low-pressure stage switch valve 14 is opened, open/quick-closing valve of compression end low-pressure stage speed 17 is closed, and rare gas enters gases at high pressure air accumulator 22 by compression end low-pressure stage check-valves 11, compression end low-pressure stage switch valve 14, safety valve 21 successively; If caloric requirement continues to supplement in heat storage can 24, compression end low-pressure stage switch valve 14 cuts out, open/quick-closing valve of compression end low-pressure stage speed 17 is opened, rare gas enters medium pressure grade compressor 3 by compression end low-pressure stage check-valves 11, open/quick-closing valve of compression end low-pressure stage speed 17 successively, and medium pressure grade compressor 3 is driven by medium pressure grade motor 6.Medium pressure grade compressor 3 outlet rare gas enter medium pressure grade heat exchanger 9 and complete exchange heat, temperature reduces, medium pressure grade heat exchanger switch valve 19 is opened simultaneously, and the medium that heat-carrying agent charging-tank 23 provides enters in medium pressure grade heat exchanger 9 and collects heat, and is stored in heat storage can 24.
If heat can meet use in heat storage can 24, compression end medium pressure grade switch valve 15 is opened, open/quick-closing valve of compression end medium pressure grade speed 18 is closed, and rare gas enters gases at high pressure air accumulator 22 by compression end medium pressure grade check-valves 12, compression end medium pressure grade switch valve 15, safety valve 21 successively; If caloric requirement continues to supplement in heat storage can 24, compression end medium pressure grade switch valve 15 cuts out, open/quick-closing valve of compression end medium pressure grade speed 18 is opened, rare gas enters hiigh pressure stage compressor 4 by compression end medium pressure grade check-valves 12, open/quick-closing valve of compression end medium pressure grade speed 18 successively, and hiigh pressure stage compressor 4 is driven by hiigh pressure stage motor 7.Hiigh pressure stage compressor 4 outlet rare gas enter hiigh pressure stage heat exchanger 10 and complete exchange heat, temperature reduces, hiigh pressure stage heat exchanger switch valve 20 is opened simultaneously, and the medium that heat-carrying agent charging-tank 23 provides enters in hiigh pressure stage heat exchanger 10 and collects heat, and is stored in heat storage can 24.
After 4 compressions of hiigh pressure stage compressor, compression end hiigh pressure stage switch valve 16 is opened, and rare gas is entered gases at high pressure air accumulator 22 and stored by compression end hiigh pressure stage check-valves 13, compression end hiigh pressure stage switch valve 16, safety valve 21 successively.So far, offer pressure energy that the electric energy conversion of system is rare gas and the heat energy in heat storage can 24.
When hot user 28 needs heat, by hot junction control system 25, carry out workload demand regulation and control, with hot junction switch valve 27, open, with hot junction heat-carrying agent charging-tank 26, provide heat-carrying agent, via sending into hot user 28 after heat storage can 24 absorption heats, complete heat supply, the medium after cooling returns with hot junction heat-carrying agent charging-tank 26.
Externally doing work and producing the cold stage, system can be according to user side to the storing heat value in the selective recovery heat storage can 24 of the demand of cold and electric weight.
When electric weight demand is less or other modes obtain electric power supply is sufficient, hiigh pressure stage heat exchanger switch valve 47 cuts out, expanding end hiigh pressure stage switch valve 32 cuts out, open/quick-closing valve of expanding end hiigh pressure stage speed 35 is opened, the rare gas that gases at high pressure air accumulator 22 discharges enters hiigh pressure stage decompressor 41 by expanding end hiigh pressure stage check-valves 29, open/quick-closing valve of expanding end hiigh pressure stage speed 35 successively, promote externally acting of hiigh pressure stage decompressor 41, hiigh pressure stage decompressor 41 drives hiigh pressure stage generator 44 externally to generate electricity by rotating shaft.
If hiigh pressure stage decompressor 41 Outlet Gas Temperatures are enough low, open/quick-closing valve of expanding end medium pressure grade speed 36 is closed, expanding end medium pressure grade switch valve 33 is opened, and hiigh pressure stage decompressor 41 exit gas enter cold storage tank 50 by expanding end medium pressure grade check-valves 30, expanding end medium pressure grade switch valve 33 successively; If hiigh pressure stage decompressor 41 Outlet Gas Temperatures are low not, open/quick-closing valve of expanding end medium pressure grade speed 36 is opened, expanding end medium pressure grade switch valve 33 cuts out, hiigh pressure stage decompressor 41 exit gas enter medium pressure grade decompressor 42 by expanding end medium pressure grade check-valves 30, open/quick-closing valve of expanding end medium pressure grade speed 36, medium pressure grade heat exchanger 39 successively, promote externally acting of medium pressure grade decompressor 42, medium pressure grade decompressor 42 drives medium pressure grade generator 45 externally to generate electricity by rotating shaft.
If medium pressure grade decompressor 42 Outlet Gas Temperatures are enough low, open/quick-closing valve of expanding end low-pressure stage speed 37 is closed, expanding end low-pressure stage switch valve 34 is opened, and medium pressure grade decompressor 42 exit gas enter cold storage tank 50 by expanding end low-pressure stage check-valves 31, expanding end low-pressure stage switch valve 34 successively; If medium pressure grade decompressor 42 Outlet Gas Temperatures are low not, open/quick-closing valve of expanding end low-pressure stage speed 37 is opened, expanding end low-pressure stage switch valve 34 cuts out, medium pressure grade decompressor 42 exit gas enter low-pressure stage decompressor 43 by expanding end low-pressure stage check-valves 31, open/quick-closing valve of expanding end low-pressure stage speed 37, low-pressure stage heat exchanger 40 successively, promote externally acting of low-pressure stage decompressor 46, low-pressure stage decompressor 43 drives low-pressure stage generator 46 externally to generate electricity by rotating shaft.Low-pressure stage decompressor 43 exit gas will enter cold storage tank 50 coolings, then through pressure-reducing valve 55, filter 56, drier 57, turn back to normal pressure rare gas memory 1 successively.
When colod-application family 54 needs cold, by cold junction control system 51, carry out workload demand regulation and control, with cold junction switch valve 52, open, with cold junction refrigerating medium charging-tank 53, provide refrigerating medium, via sending into colod-application family 54 after cold storage tank 50 absorption colds, complete cold supply, the medium after intensification returns with cold junction refrigerating medium charging-tank 53.
When electric weight demand bigger than normal, when refrigeration requirement is less and other modes obtain electric power supply is not enough, hiigh pressure stage heat exchanger switch valve 47 is opened, expanding end hiigh pressure stage switch valve 32 is opened, open/quick-closing valve of expanding end hiigh pressure stage speed 35 is closed, the rare gas that gases at high pressure air accumulator 22 discharges is successively by expanding end hiigh pressure stage check-valves 29, expanding end hiigh pressure stage switch valve 32 enters hiigh pressure stage heat exchanger 38 and completes intensification, the heat-carrying agent of heat storage can 24 supply enters hiigh pressure stage heat exchanger 38 by hiigh pressure stage heat exchanger switch valve 47 and completes the exchange heat with rare gas, return to subsequently heat-carrying agent charging-tank 23.Rare gas after intensification enters hiigh pressure stage decompressor 41, promotes externally acting of hiigh pressure stage decompressor 41, and hiigh pressure stage decompressor 41 drives hiigh pressure stage generator 44 externally to generate electricity by rotating shaft.
If do not need, continue to supplement supply of electric power, open/quick-closing valve of expanding end medium pressure grade speed 36 is closed, expanding end medium pressure grade switch valve 33 is opened, and hiigh pressure stage decompressor 41 exit gas enter cold storage tank 50 by expanding end medium pressure grade check-valves 30, expanding end medium pressure grade switch valve 33 successively and complete cold and store, if desired continue to supplement supply of electric power, open/quick-closing valve of expanding end medium pressure grade speed 36 is opened, expanding end medium pressure grade switch valve 33 cuts out, hiigh pressure stage decompressor 41 exit gas are successively by expanding end medium pressure grade check-valves 30, open/quick-closing valve of expanding end medium pressure grade speed 36 enters medium pressure grade heat exchanger 39 and completes intensification, now medium pressure grade heat exchanger switch valve 48 is opened, the heat-carrying agent of heat storage can 24 supplies is by hiigh pressure stage heat exchanger switch valve 47, after medium pressure grade heat exchanger switch valve 48, enter medium pressure grade heat exchanger 39 and complete the exchange heat with rare gas, return to subsequently heat-carrying agent charging-tank 23.Rare gas after intensification enters medium pressure grade decompressor 42, promotes externally acting of medium pressure grade decompressor 42, and medium pressure grade decompressor 42 drives medium pressure grade generator 45 externally to generate electricity by rotating shaft.
If do not need, continue to supplement supply of electric power, open/quick-closing valve of expanding end low-pressure stage speed 37 is closed, expanding end low-pressure stage switch valve 34 is opened, and medium pressure grade decompressor 42 exit gas enter cold storage tank 50 by expanding end low-pressure stage check-valves 31, expanding end low-pressure stage switch valve 34 successively and complete cold and store, if desired continue to supplement supply of electric power, open/quick-closing valve of expanding end low-pressure stage speed 37 is opened, expanding end low-pressure stage switch valve 34 cuts out, medium pressure grade decompressor 42 exit gas are successively by expanding end low-pressure stage check-valves 31, open/quick-closing valve of expanding end low-pressure stage speed 37 enters low-pressure stage heat exchanger 40 and completes intensification, now low-pressure stage heat exchanger switch valve 49 is opened, the heat-carrying agent of heat storage can 24 supplies is by hiigh pressure stage heat exchanger switch valve 47, medium pressure grade heat exchanger switch valve 48, after low-pressure stage heat exchanger switch valve 49, enter low-pressure stage heat exchanger 40 and complete the exchange heat with rare gas, return to subsequently heat-carrying agent charging-tank 23.Rare gas after intensification enters low-pressure stage decompressor 43, promotes externally acting of low-pressure stage decompressor 43, and low-pressure stage decompressor 43 drives low-pressure stage generator 46 externally to generate electricity by rotating shaft.Low-pressure stage decompressor 43 exit gas are after cold storage tank 50 coolings, then process pressure-reducing valve 55, filter 56, drier 57 turn back to normal pressure rare gas memory 1 successively.
To sum up, at thermal energy storage process, this system can utilize switch valve and the open/quick-closing valve of speed before every grade of compressor air inlet machine to control the progression compressing, to control the final pressure of gas and the memory space of heat, the calorie value of storage can be distributed to hot user and return to gases at high pressure according to hot user's demand is selective; In exoergic process, this system can be according to user the demand to electric weight and cold, utilize switch valve before every grade of decompressor air inlet and open/quick-closing valve of speed to control to expand and the progression of heat again, complete the supply of cold and electric weight.Consider the convenience that is obtained supply of electric power by other modes, exoergic process can reduce the return of heat to gases at high pressure in thermal storage device, and system is supplied as master with cold, and supply of electric power is auxiliary, and which also can guarantee hot user's the heat of using.
The foregoing is only 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., within all should being included in scope of the present utility model.
Claims (10)
1. the Compressed Gas distributed energy resource system that the rare gas of take is working medium, comprising: rare gas feeding unit, rare gas compressed energy-storage unit, rare gas expand and releases energy unit, heat-carrying agent closed circuit, it is characterized in that,
Described rare gas feeding unit comprises normal pressure rare gas memory (1);
Described rare gas compressed energy-storage unit comprises low-pressure stage compressor (2), medium pressure grade compressor (3), hiigh pressure stage compressor (4) and gases at high pressure air accumulator (22), wherein,
--the air inlet of described low-pressure stage compressor (2) is communicated with the gas outlet of described normal pressure rare gas memory (1) by pipeline, the gases at high pressure that described low-pressure stage compressor (2) produces are through the hot fluid rear flank of low-pressure stage cooler (8), a part passes into described gases at high pressure air accumulator (22) through the gas piping with compression end low-pressure stage switch valve (14), another part is through passing into the air inlet of described medium pressure grade compressor (3) with the gas piping of open/quick-closing valve of compression end low-pressure stage speed (17)
--the gases at high pressure that described medium pressure grade compressor (3) produces pass the hot fluid rear flank of medium pressure grade cooler (9), a part passes into described gases at high pressure air accumulator (22) through the gas piping with compression end medium pressure grade switch valve (15), another part is through passing into the air inlet of described hiigh pressure stage compressor (4) with the gas piping of open/quick-closing valve of compression end medium pressure grade speed (18)
--the gases at high pressure that described hiigh pressure stage compressor (4) produces pass the hot fluid rear flank of hiigh pressure stage cooler (10), through the gas piping with compression end hiigh pressure stage switch valve (16), pass into described gases at high pressure air accumulator (22);
Described rare gas expands and releases and can comprise hiigh pressure stage decompressor (41), medium pressure grade decompressor (42) and low-pressure stage decompressor (43) in unit, wherein,
--the gases at high pressure that described gases at high pressure air accumulator (22) stores, a part passes into hiigh pressure stage heat exchanger (38) cold fluid rear flank through being provided with the gas piping of expanding end hiigh pressure stage switch valve (32) passes into described hiigh pressure stage decompressor (41), another part passes into described hiigh pressure stage decompressor (41) through being provided with the gas piping of open/quick-closing valve of expanding end hiigh pressure stage speed (35)
--the gas after described hiigh pressure stage decompressor (41) expands, a part passes into cold storage tank (50) through the gas piping with expanding end medium pressure grade switch valve (33), the cold fluid rear flank that another part passes into medium pressure grade heat exchanger (39) through the gas piping with open/quick-closing valve of expanding end medium pressure grade speed (36) enters described medium pressure grade decompressor (42)
--the gas after described medium pressure grade decompressor (42) expands, a part passes into cold storage tank (50) through the gas piping with expanding end low-pressure stage switch valve (34), the cold fluid rear flank that another part passes into low-pressure stage heat exchanger (40) through the gas piping with open/quick-closing valve of expanding end low-pressure stage speed (37) enters described low-pressure stage decompressor (43)
--the gas after described low-pressure stage decompressor (43) expands is by flowing into normal pressure rare gas memory (1) after cold storage tank (50);
Described heat-carrying agent closed circuit comprises heat-carrying agent charging-tank (23), heat storage can (24), the cold fluid rear flank that heat-carrying agent in described heat-carrying agent charging-tank (23) passes into respectively low-pressure stage cooler (8), medium pressure grade cooler (9), hiigh pressure stage cooler (10) by the road enters described heat storage can (24), and the hot fluid rear flank that the heat-carrying agent in described heat storage can (24) passes into respectively hiigh pressure stage heat exchanger (38), medium pressure grade heat exchanger (39), low-pressure stage heat exchanger (40) by the road enters described heat-carrying agent charging-tank (23).
2. according to claim 1ly take the Compressed Gas distributed energy resource system that rare gas is working medium, it is characterized in that, described heat-carrying agent charging-tank (23) is divided heat-carrying agent to deliver to low-pressure stage cooler (8) by a common low temperature heat-carrying agent supply line, medium pressure grade cooler (9), the cold flow side of hiigh pressure stage cooler (10), the supply line being positioned between described low-pressure stage cooler (8) and medium pressure grade cooler (9) is provided with medium pressure grade cooler switch valve (19), the supply line being positioned between described medium pressure grade cooler (9) and hiigh pressure stage cooler (10) is provided with hiigh pressure stage cooler switch valve (20).
3. according to claim 2ly take the Compressed Gas distributed energy resource system that rare gas is working medium, it is characterized in that, described heat storage can (24) is sent heat-carrying agent to hiigh pressure stage heat exchanger (38) by a common high temperature heat-carrying agent supply line, medium pressure grade heat exchanger (39), the hot-fluid side of low-pressure stage heat exchanger (40), on described supply line, be serially connected with hiigh pressure stage heat exchanger switch valve (47), medium pressure grade heat exchanger switch valve (48), low-pressure stage heat exchanger switch valve (49), wherein, described hiigh pressure stage heat exchanger switch valve (47) is arranged on the supply line between described heat storage can (24) and hiigh pressure stage heat exchanger (38), described medium pressure grade heat exchanger switch valve (48) is arranged on the supply line between described hiigh pressure stage heat exchanger (38) and medium pressure grade heat exchanger (39), described low-pressure stage heat exchanger switch valve (49) is arranged on the supply line between described medium pressure grade heat exchanger (39) and low-pressure stage heat exchanger (40).
4. according to claim 2ly take the Compressed Gas distributed energy resource system that rare gas is working medium, it is characterized in that, the pipeline at the hot fluid side outlet place of described low-pressure stage cooler (8) is provided with compression end low-pressure stage check-valves (11).
5. according to claim 2ly take the Compressed Gas distributed energy resource system that rare gas is working medium, it is characterized in that, the pipeline at the hot fluid side outlet place of described medium pressure grade cooler (9) is provided with compression end medium pressure grade check-valves (12).
6. according to claim 2ly take the Compressed Gas distributed energy resource system that rare gas is working medium, it is characterized in that, the pipeline at the hot fluid side outlet place of described hiigh pressure stage cooler (10) is provided with compression end hiigh pressure stage check-valves (13).
7. according to claim 1ly take the Compressed Gas distributed energy resource system that rare gas is working medium, it is characterized in that, the pipeline at the air inlet place of described gases at high pressure air accumulator (22) is provided with safety valve (21).
8. according to claim 1ly take the Compressed Gas distributed energy resource system that rare gas is working medium, it is characterized in that, the pipeline at the place, gas outlet of described hiigh pressure stage decompressor (41) is provided with expanding end medium pressure grade check-valves (30).
9. according to claim 1ly take the Compressed Gas distributed energy resource system that rare gas is working medium, it is characterized in that, the pipeline at the place, gas outlet of described medium pressure grade decompressor (42) is provided with expanding end low-pressure stage check-valves (31).
10. according to claim 1ly take the Compressed Gas distributed energy resource system that rare gas is working medium, it is characterized in that, gas piping between described cold storage tank (50) and rare gas memory (1) is provided with pressure-reducing valve (55), and/or filter (56), and/or drier (57).
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437885A (en) * | 2016-11-29 | 2017-02-22 | 中国科学院理化技术研究所 | Compressed air energy storage system |
| CN108386235A (en) * | 2018-04-18 | 2018-08-10 | 贵州电网有限责任公司 | A kind of compressed-air energy storage accumulation of heat heat regenerative system |
| CN110446839A (en) * | 2017-03-29 | 2019-11-12 | 株式会社神户制钢所 | Compressed-air energy storage power generator |
| CN112901460A (en) * | 2021-02-01 | 2021-06-04 | 国网江苏省电力有限公司镇江供电分公司 | Compressed air energy storage system of degree of depth energy supply |
-
2013
- 2013-08-28 CN CN201320530346.3U patent/CN203518328U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437885A (en) * | 2016-11-29 | 2017-02-22 | 中国科学院理化技术研究所 | Compressed air energy storage system |
| CN106437885B (en) * | 2016-11-29 | 2018-04-17 | 中国科学院理化技术研究所 | Compressed air energy storage system |
| CN110446839A (en) * | 2017-03-29 | 2019-11-12 | 株式会社神户制钢所 | Compressed-air energy storage power generator |
| CN108386235A (en) * | 2018-04-18 | 2018-08-10 | 贵州电网有限责任公司 | A kind of compressed-air energy storage accumulation of heat heat regenerative system |
| CN112901460A (en) * | 2021-02-01 | 2021-06-04 | 国网江苏省电力有限公司镇江供电分公司 | Compressed air energy storage system of degree of depth energy supply |
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