CN208122904U - A kind of compressed-air energy storage expander system - Google Patents
A kind of compressed-air energy storage expander system Download PDFInfo
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- CN208122904U CN208122904U CN201820548908.XU CN201820548908U CN208122904U CN 208122904 U CN208122904 U CN 208122904U CN 201820548908 U CN201820548908 U CN 201820548908U CN 208122904 U CN208122904 U CN 208122904U
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- expanding machine
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Abstract
The utility model discloses a kind of compressed-air energy storage expander systems,Including compressed air reservoir and heat exchanger,The compressed air reservoir outlet is connect with quick-closing valve,The quick-closing valve is connect with regulating valve and aeration valve respectively,The regulating valve and the aeration valve are separately connected the cold side import of heat exchanger,The cold side outlet port of the heat exchanger connects expander inlet,Axis connection is driven between the expanding machine,The expanding machine and generator drive gear axis connection of rightmost,The hot side import of the heat exchanger is connect with heat-accumulator tank,The hot side outlet of the heat exchanger is connect with cold-storage tank,The expanding machine quantity is more than or equal to two,Utilize the control characteristic of aeration valve,Change the parameter of compressed air before each expanding machine,Realize distributing rationally for compressed air expander system,Make the output power of system expanding machine not less than power needed for system,System real work efficiency is improved simultaneously by adjusting regulating valve and the aperture of aeration valve,Improve compressed-air energy storage electricity-electrotransformation efficiency.
Description
Technical field
The utility model relates to the compressions that compressed-air energy storage field more particularly to a kind of multiple expanding machines use aeration valve
Air energy storage systems.
Background technique
A kind of relatively advanced energy storage mode, is mainly characterized by low in electricity consumption in the current energy storage technology of compressed-air energy storage
Consume energy-storage capacity when paddy, when peak of power consumption is done work by expanding machine drives electrical power generators, has that energy storage scale is big, deposits
Store up the advantages that period is long, environmental pollution is small, it is considered to be one of most promising extensive power energy storage technology.
Energy can be preferably utilized using compressed-air energy-storage system, so that energy reasonable distribution, environmentally friendly, but by
Peak times of power consumption are typically in when expanding machine does work in the system, energy will not be supplemented to system, so that the ginseng of compressed air
Number changes greatly, and the best efficiency point of expanding machine is when system designs also it has been confirmed that cannot be with the Parameters variation of compressed air
And change, when for example pressure, temperature departure design value are larger for the parameter of compressed air, the efficiency of expanding machine will rapid decrease,
So that whole system operational efficiency reduces.
Therefore, big for Parameters variation in compressed-air energy storage operation, expanding machine cannot adapt to completely in the whole process
The problem of operating condition converts, it is necessary to reasonable solution is found, compressed-air energy storage electricity-photoelectric transformation efficiency can be just effectively improved,
Increase the practicability of compressed-air energy storage.
Utility model content
The technical problems to be solved in the utility model is：A kind of compressed-air energy storage expander system, in each expanding machine
Aeration valve is arranged in entrance, and to solve, compressed-air energy storage expander system efficiency under compared with low-pressure air parameter is relatively low to be asked
Topic.
The technical solution of the utility model is：A kind of compressed-air energy storage expander system, including compressed air reservoir
And heat exchanger, the compressed air reservoir outlet are connect with quick-closing valve, the quick-closing valve connects with regulating valve and aeration valve respectively
It connects, the regulating valve and the aeration valve are separately connected the cold side import of heat exchanger, and the cold side outlet port connection of the heat exchanger is swollen
Swollen machine entrance is driven axis connection, the expanding machine and generator drive gear axis connection of rightmost, the heat exchanger between the expanding machine
Hot side import connect with heat-accumulator tank, the hot side outlet of the heat exchanger is connect with cold-storage tank.
Preferably, the expanding machine quantity is more than or equal to two.
Preferably, the aeration valve be surge, pneumatically, manual or electro-hydraulic manipulation and control mode.
Preferably, the aeration valve is a kind of regulating valve, can run and keep in any opening degree.
The control method of compressed-air energy storage expander system, includes the following steps：
Step 1: power needed for system is Pc, it is that only constant related with system performance, power phase open regulating valve,
If output power Po >=Pc of all expanding machines, compressed air needed for all expanding machines is all provided by regulating valve, at this time
Aeration valve is all closed；
Step 2: the aperture of adjustment regulating valve, makes system actual efficiency reach system optimum efficiency η max, wherein η max
It is a constant related with system performance；
Step 3: power phase, when the pressure in compressed air reservoir gradually decreases, heat exchanger cold side outlet port pressure by
Gradually reduce, when regulating valve standard-sized sheet can not meet system service requirement, the output power Po < Pc of all expanding machines at this time, from the right side
To left aeration valve of successively opening up to output power Po >=Pc of all expanding machines, add so that air is partially compressed by heat exchanger
It after heat, does work into expanding machine, compressed air needed for all expanding machines is provided jointly by regulating valve and aeration valve；
Step 4: adjusting regulating valve and having opened the aperture of aeration valve, system actual efficiency is made to reach system optimum efficiency η
max。
The utility model has the beneficial effects that：The utility model makes compressed-air energy storage expander system overall flexibility
It improves, compressed-air energy storage acting flexible adjustment improves, and according to the needs of power generation, utilizes the control characteristic of aeration valve, changes
The parameter of compressed air before each expanding machine realizes distributing rationally for compressed air expander system, makes the output of system expanding machine
Power needed for power is not less than system, while system real work effect is improved by adjusting regulating valve and the aperture of aeration valve
Rate improves compressed-air energy storage electricity-electrotransformation efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of utility model device；
Fig. 2 is the structural schematic diagram of the utility model " embodiment 1 "；
Fig. 3 is the structural schematic diagram of the utility model " embodiment 2 "；
In figure：1, quick-closing valve, 2, regulating valve, 3, aeration valve, 4, cold side import, 5, cold side outlet port, 6, hot side import, 7, heat
Side outlet.
Specific embodiment
Utility model is described further in 1-3 and specific embodiment with reference to the accompanying drawing：
Embodiment 1：
With reference to Fig. 2, a kind of compressed-air energy storage expander system, including compressed air reservoir, two expanding machines and two
A heat exchanger, compressed air reservoir outlet are connect with quick-closing valve 1, the quick-closing valve 1 respectively with regulating valve 2 and aeration valve
3 connections, the regulating valve 2 and the aeration valve 3 are separately connected the cold side import 4 of heat exchanger, the cold side outlet port 5 of the heat exchanger
Expander inlet is connected, axis connection is driven between the expanding machine, the expanding machine and generator drive gear axis connection of rightmost are described
The hot side import 6 of heat exchanger is connect with heat-accumulator tank, and the hot side outlet 7 of the heat exchanger is connect with cold-storage tank.
Preferably, the aeration valve 3 be surge, pneumatically, manual or electro-hydraulic manipulation and control mode.
Preferably, the aeration valve 3 is a kind of regulating valve, can run and keep in any opening degree.
The control method of compressed-air energy storage expander system, includes the following steps：
Step 1: power needed for system is Pc, it is that only constant related with system performance, power phase open regulating valve
2, if output power Po >=Pc of all expanding machines, compressed air needed for all expanding machines all passes through regulating valve 2 and provides, this
When aeration valve 3 close；
Step 2: the aperture of adjustment regulating valve 2, makes system actual efficiency reach system optimum efficiency η max, wherein η max
It is that only constant related with system performance, system actual efficiency are calculated and be shown by other controller；
Step 3: power phase, when the pressure in compressed air reservoir gradually decreases, heat exchanger cold side outlet port pressure by
It gradually reduces, when 2 standard-sized sheet of regulating valve can not meet system service requirement, the output power Po < Pc of all expanding machines, is opened at this time
Aeration valve 3 is opened until output power Po >=Pc of all expanding machines enters so that air is partially compressed after heat exchanger heats
Expanding machine does work, and compressed air needed for all expanding machines is provided jointly by regulating valve 2 and aeration valve 3；
Step 4: adjusting regulating valve 2 and having opened the aperture of aeration valve 3, system actual efficiency is made to reach system optimum efficiency η
Max, system actual efficiency are calculated and be shown by other controller.
Embodiment 2：
With reference to Fig. 3, a kind of compressed-air energy storage expander system, including compressed air reservoir, four expanding machines and four
A heat exchanger, compressed air reservoir outlet are connect with quick-closing valve 1, the quick-closing valve 1 respectively with regulating valve 2 and aeration valve
3 connections, the regulating valve 2 and the aeration valve 3 are separately connected the cold side import 4 of heat exchanger, the cold side outlet port 5 of the heat exchanger
Expander inlet is connected, axis connection is driven between the expanding machine, the expanding machine and generator drive gear axis connection of rightmost are described
The hot side import 6 of heat exchanger is connect with heat-accumulator tank, and the hot side outlet 7 of the heat exchanger is connect with cold-storage tank.
Preferably, the aeration valve 3 be surge, pneumatically, manual or electro-hydraulic manipulation and control mode.
Preferably, the aeration valve 3 is a kind of regulating valve, can run and keep in any opening degree.
The control method of compressed-air energy storage expander system, includes the following steps：
Step 1: power needed for system is Pc, it is that only constant related with system performance, power phase open regulating valve
2, if output power Po >=Pc of all expanding machines, compressed air needed for all expanding machines all passes through regulating valve 2 and provides, this
Shi Suoyou aeration valve 3 is closed；
Step 2: the aperture of adjustment regulating valve 2, makes system actual efficiency reach system optimum efficiency η max, wherein η max
It is that only constant related with system performance, system actual efficiency are calculated and be shown by other controller；
Step 3: power phase, when the pressure in compressed air reservoir gradually decreases, heat exchanger cold side outlet port pressure by
It gradually reduces, when 2 standard-sized sheet of regulating valve can not meet system service requirement, the output power Po < Pc of all expanding machines, is opened at this time
Rightmost side aeration valve 3 is opened up to output power Po >=Pc of all expanding machines, is heated so that air is partially compressed by heat exchanger
Afterwards, it does work into expanding machine, compressed air needed for all expanding machines is provided jointly by regulating valve 2 and rightmost side aeration valve 3；
Step 3-1, if regulating valve 2 and 3 standard-sized sheet of rightmost side aeration valve can not meet system service requirement, own at this time
The output power Po < Pc of expanding machine, open second aeration valve 3 from right to left makes up to output power Po >=Pc of all expanding machines
Air must be partially compressed after heat exchanger heats, do work into expanding machine, compressed air needed for all expanding machines passes through tune
It saves valve 2 and two aeration valves 3 provides jointly from right to left；
If step 3-2, regulating valve 2 and when two 3 standard-sized sheets of aeration valve can not meet system service requirement from right to left, institute at this time
There is the output power Po < Pc of expanding machine, opens the last one aeration valve 3 up to output power Po >=Pc of all expanding machines, make
Air must be partially compressed after heat exchanger heats, do work into expanding machine, compressed air needed for all expanding machines passes through tune
It saves valve 2 and whole aeration valves 3 provides jointly；
Step 4: adjusting regulating valve 2 and having opened the aperture of aeration valve 3, system actual efficiency is made to reach system optimum efficiency η
Max, system actual efficiency are calculated and be shown by other controller.
Claims (4)
1. a kind of compressed-air energy storage expander system, including compressed air reservoir, it is characterised in that：It further include heat exchanger,
The compressed air reservoir outlet and quick-closing valve（1）Connection, the quick-closing valve（1）Respectively with regulating valve（2）And aeration valve（3）
Connection, the regulating valve（2）With the aeration valve（3）It is separately connected the cold side import of heat exchanger（4）, the cold side of the heat exchanger
Outlet（5）Expander inlet is connected, axis connection is driven between the expanding machine, the expanding machine and generator drive axle of rightmost connect
It connects, the hot side import of the heat exchanger（6）It is connect with heat-accumulator tank, the hot side outlet of the heat exchanger（7）It is connect with cold-storage tank.
2. a kind of compressed-air energy storage expander system according to claim 1, it is characterised in that：The expanding machine quantity
More than or equal to two.
3. a kind of compressed-air energy storage expander system according to claim 1, it is characterised in that：The aeration valve（3）
To surge, pneumatically, manual or electro-hydraulic manipulation and control mode.
4. a kind of compressed-air energy storage expander system according to claim 1, it is characterised in that：The aeration valve（3）
It is a kind of regulating valve, can runs and keep in any opening degree.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820548908.XU CN208122904U (en) | 2018-04-18 | 2018-04-18 | A kind of compressed-air energy storage expander system |
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| CN201820548908.XU CN208122904U (en) | 2018-04-18 | 2018-04-18 | A kind of compressed-air energy storage expander system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316982A (en) * | 2018-04-18 | 2018-07-24 | 贵州电网有限责任公司 | A kind of compressed-air energy storage expander system and its control method |
| CN115929424A (en) * | 2022-11-03 | 2023-04-07 | 中国能源建设集团江苏省电力设计院有限公司 | Novel air turbine distribution system of compressed air energy storage power station and operation method |
-
2018
- 2018-04-18 CN CN201820548908.XU patent/CN208122904U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108316982A (en) * | 2018-04-18 | 2018-07-24 | 贵州电网有限责任公司 | A kind of compressed-air energy storage expander system and its control method |
| CN108316982B (en) * | 2018-04-18 | 2023-11-24 | 贵州电网有限责任公司 | Compressed air energy storage expander system and control method thereof |
| CN115929424A (en) * | 2022-11-03 | 2023-04-07 | 中国能源建设集团江苏省电力设计院有限公司 | Novel air turbine distribution system of compressed air energy storage power station and operation method |
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