CN115435235B - 双腔式的地下恒温阶梯储气系统及其工作方法 - Google Patents
双腔式的地下恒温阶梯储气系统及其工作方法 Download PDFInfo
- Publication number
- CN115435235B CN115435235B CN202210956956.3A CN202210956956A CN115435235B CN 115435235 B CN115435235 B CN 115435235B CN 202210956956 A CN202210956956 A CN 202210956956A CN 115435235 B CN115435235 B CN 115435235B
- Authority
- CN
- China
- Prior art keywords
- storage cavity
- air
- pressure
- gas storage
- self
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
- F17C1/02—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge involving reinforcing arrangements
- F17C1/08—Integral reinforcements, e.g. ribs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
- F17C1/12—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for thermal insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
- F17C13/025—Special adaptations of indicating, measuring, or monitoring equipment having the pressure as the parameter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
- F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/01—Shape
- F17C2201/0128—Shape spherical or elliptical
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/01—Reinforcing or suspension means
- F17C2203/011—Reinforcing means
- F17C2203/012—Reinforcing means on or in the wall, e.g. ribs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0612—Wall structures
- F17C2203/0626—Multiple walls
- F17C2203/0629—Two walls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/068—Special properties of materials for vessel walls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/01—Mounting arrangements
- F17C2205/0123—Mounting arrangements characterised by number of vessels
- F17C2205/013—Two or more vessels
- F17C2205/0134—Two or more vessels characterised by the presence of fluid connection between vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0323—Valves
- F17C2205/0332—Safety valves or pressure relief valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
- F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
- F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
- F17C2205/0338—Pressure regulators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/03—Mixtures
- F17C2221/031—Air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
- F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
- F17C2225/0107—Single phase
- F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/03—Heat exchange with the fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/03—Heat exchange with the fluid
- F17C2227/0367—Localisation of heat exchange
- F17C2227/0369—Localisation of heat exchange in or on a vessel
- F17C2227/0376—Localisation of heat exchange in or on a vessel in wall contact
- F17C2227/0381—Localisation of heat exchange in or on a vessel in wall contact integrated in the wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
- F17C2227/04—Methods for emptying or filling
- F17C2227/043—Methods for emptying or filling by pressure cascade
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/04—Indicating or measuring of parameters as input values
- F17C2250/0404—Parameters indicated or measured
- F17C2250/043—Pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
- F17C2250/06—Controlling or regulating of parameters as output values
- F17C2250/0605—Parameters
- F17C2250/0626—Pressure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2265/00—Effects achieved by gas storage or gas handling
- F17C2265/07—Generating electrical power as side effect
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
本发明涉及一种双腔式的地下恒温阶梯储气系统及其工作方法。适用于压缩空气和储能技术领域。本发明所采用的技术方案是:一种双腔式的地下恒温阶梯储气系统,其特征在于,包括:充放气管,其上装有压力阀;第一储气腔,连通所述充放气管,该储气腔腔体上设有相变材料和能在相变材料和腔体内储气腔之间导热的导热结构;第二储气腔,与所述第一储气腔之间经自力式压力调节阀I、自力式压差调节阀Ⅱ和自力式压差调节阀Ⅲ连通,其中自力式压力调节阀I能在第一储气腔内空气压力的降低达到设定的中压值时使第二储气腔至第一储气腔导通;所述自力式压差调节阀Ⅱ、Ⅲ能在第一储气腔内的压力达到设定的高压值时,使第一储气腔至第二储气腔导通。
Description
技术领域
本发明涉及一种双腔式的地下恒温阶梯储气系统及其工作方法。适用于压缩空气和储能技术领域。
背景技术
地下储气库是大规模压缩空气储能电站的核心部件,其在运行中的温度状态对于储气库密封层材料性能及耐久性起决定性作用。目前国内压缩空气储能电站通常利用谷电进行压缩空气,并在用电高峰期进行发电。因此在谷电的几个小时内,要完成超过10万立方米体积空气的压缩。
由于国内外压气储能电站地下储气库均采用单一的充放气主管布置方案,大流量的压缩空气通过充放气主管不断进入储气洞穴后,短时间会导致储气库内的空气密度急剧增加,温度急剧升高。同时储气库内的压缩空气温度分布还会呈现出显著不均匀分布特性。在储气库放气发电的工况下,储气库内压缩空气膨胀吸热,又导致储气库内压缩空气温度的急剧降低,如果不加以控制,压缩空气甚至会出现负温状态。对于储气容积达到1万立方米或10万立方米级别的地下储气库压缩空气温度的控制难点在于采用常规布置换热管方式具有换热系统规模大、造价高和换热效率低,温控效果差。
为了便于选址,近来部分压缩空气储能电站采用新建地下储气库的方案。而温度分布不均匀性、压缩空气温度过高或出现负温对新开挖硬岩洞穴储气库的密封结构的开裂特性和耐久性产生严重的影响,可能造成密封层泄露,甚至引起密封层失效,同时大大缩短了密封层的检修周期,影响工程的正常运行,并大大增加运行成本。
发明内容
本发明要解决的技术问题是:针对上述存在的问题,提供一种双腔式的地下恒温阶梯储气系统及其工作方法。
本发明所采用的技术方案是:一种双腔式的地下恒温阶梯储气系统,其特征在于,包括:
充放气管,其上装有压力阀;
第一储气腔,连通所述充放气管,该储气腔腔体上设有相变材料和能在相变材料和腔体内储气腔之间导热的导热结构;
第二储气腔,与所述第一储气腔之间经自力式压力调节阀I、自力式压差调节阀Ⅱ和自力式压差调节阀Ⅲ连通,其中自力式压力调节阀I能在第一储气腔内空气压力的降低达到设定的中压值时使第二储气腔至第一储气腔导通;所述自力式压差调节阀Ⅱ、Ⅲ能在第一储气腔内的压力达到设定的高压值时,即第一储气腔和第二储气腔的压力差达到设定值时,使第一储气腔至第二储气腔导通。
所述第一储气腔腔体内壁采用高压钢衬,高压钢衬内层填充有所述相变材料,高压钢衬内表面装有所述导热结构,导热结构一端伸出高压钢衬内表面,另一端与相变材料相连。
所述导热结构采用碳材料肋片。
所述碳材料肋片在所述高压钢衬内表面形成能增加壁面处空气扰动的突起。
所述第二储气腔具有球状腔体,第二储气腔的腔体外固定半球状壳体,第二储气腔腔体外壁与半球状壳体内壁之间形成所述第一储气腔。
所述自力式压力调节阀I具有多个,分别对应不同大小的中压值,能在所述第一储气腔内空气压力降低过程中依次打开,从而逐渐增大从所述第二储气腔到第一储气腔的空气流量。
所述自力式压差调节阀Ⅱ和自力式压差调节阀Ⅲ的数量根据压力和流量的需求确定。
一种所述双腔式的地下恒温阶梯储气系统的工作方法,其特征在于:
阶梯储气工作状态过程:
压缩空气储能电站将空气压缩并通过充放气管流入第一储气腔,第一储气腔内气压升高,第一储气腔内高压空气与第一储气腔内壁面因摩擦产生的热量经导热结构传递给相变材料,相变材料吸热熔化,避免第一储气腔内温度过高;
在储气的初始状态时,第二储气腔内的压力时固定值。当第一储气腔内的压力达到设定的高压值时,即第一储气腔和第二储气腔的压力差达到设定值时,自力式压差调节阀II、III自动打开,第一储气腔内的高压空气经自力式压差调节阀II、III缓慢地流入第二储气腔;
吸热排气工作状态过程:
第一储气腔内的高压空气首先通过充放气管流出,该第一储气腔内当空气膨胀,温度降低时,相变材料凝固放热并通过导热结构将热量传递给第一储气腔内空气;
随着第一储气腔内空气压力的降低达到设定的中压值时,自力式压力调节阀I自动打开,第二储气腔内的空气经自力式压力调节阀I流入第一储气腔内,在第一储气腔内进一步吸收相变材料凝固放出的热量,并通过充放气管流出。
本发明的有益效果是:本发明通过在第一储气腔腔体上设置相变材料,利用相变材料吸收压缩热,并在膨胀时进行补热,实现余热回收利用,提高能源利用率。
本发明在利用高强度高导热碳材料肋片在相变材料和第一储气腔内空气之间导热,不仅增加空气扰动,使自然对流的空气由层流变温湍流,而且强化空气和相变材料之间的传热,提高传热效率。
本发明利用自力式压差调节阀II、III和第二储气腔缓慢地存储高压空气,使空气温度在第二储气腔内分布均匀。自力式压力调节阀无需外加能源,具有动作灵敏,密封性好,压力设定点波动力小等优点,既方便使用又节约了能源。
本发明通过设置多个对应不同大小预定中压值的自力式压力调节阀I,该多个自力式压力调节阀I能在所述第一储气腔内空气压力降低过程中依次打开,从而逐渐增大从第二储气腔到第一储气腔的空气流量,进而控制发电过程中,空气不断流出时,空气的流量恒定,保证发电的稳定性。
附图说明
图1为实施例的剖面结构示意图。
图2为实施例的俯视图。
1、充放气管;2、压力阀;3、第一储气腔;4、第二储气腔;5、高压钢衬;6、相变材料;7、碳材料肋片;8、中压钢衬;9、自力式压力调节阀I;10、自力式压差调节阀II;11、自力式压差调节阀III。
具体实施方式
本实施例为一种双腔式的地下恒温阶梯储气系统,包括充放气管和储气结构,其中储气结构具有球形的腔体,球形腔体上端固定半球状壳体,球形腔体内为第二储气腔,球形腔体外壁与半球状壳体内壁之间形成第一储气腔;充放气管上装有压力阀并连通储气结构的第一储气腔。
本例中在第二储气腔内壁安装中压钢衬,中压钢衬上对第一储气腔安装有自力式压力调节阀I、自力式压差调节阀II和自力式压差调节阀III,第一储气腔和第二储气腔之间能经自力式压力调节阀I、自力式压差调节阀II和自力式压差调节阀III连通。
本例中第一储气腔的腔体内壁安装高压钢衬,高压钢衬内层填充有相变材料,高压钢衬内表面装有若干能在相变材料和第一储气腔内空气之间导热的导热结构。
本实施例中导热结构采用碳材料肋片,碳材料肋片在高压钢衬内表面形成能增加壁面处空气扰动的突起,使第一储气腔内自然对流状态下的空气由层流变为湍流,从而增强壁面处的对流换热系数。碳材料肋片不仅具有高导热系数还有更大的接触面积,可以进一步增强高压钢衬内壁与空气之间的导热。
本例中自力式压力调节阀I具有多个,分别对应不同大小的中压值,能在第一储气腔内空气压力降低过程中依次打开,从而逐渐增大从所述第二储气腔到第一储气腔的空气流量。
如自力式压力调节阀I具有三个,分别为自力式压力调节阀I-A、I-B和I-C,自力式压力调节阀I-A、I-B和I-C的出口压力分别对应设定为中压值A、B和C,其中中压值A>中压值B>中压值C。当第一储气腔内空气压力降低到设定的中压值A时,自力式压力调节阀I-A自动打开;当第一储气腔内空气压力降低到设定的中压值B时,自力式压力调节阀I-B再自动打开;当第一储气腔内空气压力降低到设定的中压值C时,自力式压力调节阀I-C再自动打开,以此逐渐增大从第二储气腔流入第一储气腔的空气流量,从而控制发电过程中,空气不断流出时,空气的流量在设定的工况范围内,保证发电的稳定性。
当第一储气腔内的压力降低到设定的压力最低值时,此时出口空气的流量无法满足外部膨胀发电机组的空气流量要求。此时关闭压力阀,吸热排气工作过程结束。
本实施例的工作原理如下:
A、阶梯储气工作状态过程:
在用电低谷期,压缩空气储能电站将空气压缩,打开压力阀,常温高压的空气通过充放气管流入第一储气腔。此时,第一储气腔中的空气在短时间内由常压升高到高压状态,高压空气与高压钢衬的内壁面因摩擦产生大量的热量,碳材料肋片将热量传递给相变材料。相变材料初始状态下是固态,在接收碳材料肋片和高压钢衬传递的热量后吸热熔化,以维持高压钢衬和碳材料肋片处于相变温度范围内,避免高压钢衬和碳材料肋片温度过高,延长其使用安全性和寿命。
在短时间内储气完成时,关闭压力阀。当第一储气腔内的压力达到设定的高压值时,即第一储气腔和第二储气腔的压力差达到设定值时,自力式压差调节阀II和自力式压差调节阀III会自动打开,第一储气腔内的高压空气缓慢地流入第二储气腔。因为此时空气流速缓慢,因此此时空气在第二储气腔内与中压钢衬不会发生剧烈摩擦,空气温度维持恒定。此时,自力式压力调节阀I因为安装方向相反,处于关闭状态。
B、吸热排气工作状态过程:
在用电高峰期,打开压力阀。第一储气腔内的高压空气首先通过充放气管流出,流入压缩空气储能电站进行膨胀发电。当第一储气腔内空气膨胀,温度降低时,相变材料凝固放热,通过碳材料肋片将热量传递给空气,空气吸热从而维持相变温度。
随着第一储气腔内空气压力的降低,达到设定的中压值时,自力式压力调节阀I自动打开,第二储气腔内的空气流入第一储气腔内,在第一储气腔内进一步吸收相变材料凝固放出的热量,维持在相变温度,并通过充放气管流出。此时,自力式压力调节阀II和自力式压力调节阀III因为安装方向相反,处于关闭状态。当第一储气腔内的压力降低到设定的压力最低值时,此时出口空气的流量无法满足外部膨胀发电机组的空气流量要求。此时关闭压力阀,吸热排气工作过程结束。
上述实施例仅为本发明的较佳实施例,但本发明的实施方式并不受上述实施例的限制,其他任何在本发明的精神和原则之内,所作的修改、替代、组合、简化、改进等,都包含在本发明的保护范围之内。
Claims (7)
1.一种双腔式的地下恒温阶梯储气系统,其特征在于,包括:
充放气管,其上装有压力阀;
第一储气腔,连通所述充放气管,该储气腔腔体上设有相变材料和能在相变材料和腔体内储气腔之间导热的导热结构;
第二储气腔,与所述第一储气腔之间经自力式压力调节阀I、自力式压差调节阀Ⅱ和自力式压差调节阀Ⅲ连通,其中自力式压力调节阀I能在第一储气腔内空气压力的降低达到设定的中压值时使第二储气腔至第一储气腔导通;所述自力式压差调节阀Ⅱ、Ⅲ能在第一储气腔内的压力达到设定的高压值时,即第一储气腔和第二储气腔的压力差达到设定值时,使第一储气腔至第二储气腔导通;
所述自力式压力调节阀I具有多个,分别对应不同大小的中压值,能在所述第一储气腔内空气压力降低过程中依次打开,从而逐渐增大从所述第二储气腔到第一储气腔的空气流量。
2.根据权利要求1所述的双腔式的地下恒温阶梯储气系统,其特征在于:所述第一储气腔腔体内壁采用高压钢衬,高压钢衬内层填充有所述相变材料,高压钢衬内表面装有所述导热结构,导热结构一端伸出高压钢衬内表面,另一端与相变材料相连。
3.根据权利要求2所述的双腔式的地下恒温阶梯储气系统,其特征在于:所述导热结构采用碳材料肋片。
4.根据权利要求3所述的双腔式的地下恒温阶梯储气系统,其特征在于:所述碳材料肋片在所述高压钢衬内表面形成能增加壁面处空气扰动的突起。
5.根据权利要求1所述的双腔式的地下恒温阶梯储气系统,其特征在于:所述第二储气腔具有球状腔体,第二储气腔的腔体外固定半球状壳体,第二储气腔腔体外壁与半球状壳体内壁之间形成所述第一储气腔。
6.根据权利要求1所述的双腔式的地下恒温阶梯储气系统,其特征在于:所述自力式压差调节阀Ⅱ和自力式压差调节阀Ⅲ的数量根据压力和流量的需求确定。
7.一种权利要求1~6任意一项所述双腔式的地下恒温阶梯储气系统的工作方法,其特征在于:
阶梯储气工作状态过程:
压缩空气储能电站将空气压缩并通过充放气管流入第一储气腔,第一储气腔内气压升高,第一储气腔内高压空气与第一储气腔内壁面因摩擦产生的热量经导热结构传递给相变材料,相变材料吸热熔化,避免第一储气腔内温度过高;
在储气的初始状态时,第二储气腔内的压力时固定值;
当第一储气腔内的压力达到设定的高压值时,即第一储气腔和第二储气腔的压力差达到设定值时,自力式压差调节阀II、III自动打开,第一储气腔内的高压空气经自力式压差调节阀II、III缓慢地流入第二储气腔;
吸热排气工作状态过程:
第一储气腔内的高压空气首先通过充放气管流出,该第一储气腔内当空气膨胀,温度降低时,相变材料凝固放热并通过导热结构将热量传递给第一储气腔内空气;
随着第一储气腔内空气压力的降低达到设定的中压值时,自力式压力调节阀I自动打开,第二储气腔内的空气经自力式压力调节阀I流入第一储气腔内,在第一储气腔内进一步吸收相变材料凝固放出的热量,并通过充放气管流出;当第一储气腔内的压力降低到设定的压力最低值时,此时出口空气的流量无法满足出口空气流量要求;此时关闭压力阀,吸热排气工作过程结束。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210956956.3A CN115435235B (zh) | 2022-08-10 | 2022-08-10 | 双腔式的地下恒温阶梯储气系统及其工作方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202210956956.3A CN115435235B (zh) | 2022-08-10 | 2022-08-10 | 双腔式的地下恒温阶梯储气系统及其工作方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN115435235A CN115435235A (zh) | 2022-12-06 |
CN115435235B true CN115435235B (zh) | 2023-10-03 |
Family
ID=84242732
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202210956956.3A Active CN115435235B (zh) | 2022-08-10 | 2022-08-10 | 双腔式的地下恒温阶梯储气系统及其工作方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN115435235B (zh) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0622698U (ja) * | 1992-08-27 | 1994-03-25 | 株式会社神戸製鋼所 | 液体ヘリウム貯槽の内圧保持装置 |
CN111706414A (zh) * | 2020-06-09 | 2020-09-25 | 西安交通大学 | 利用可凝气体相变的准等压放电等温压缩储能系统与方法 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8353684B2 (en) * | 2009-02-05 | 2013-01-15 | Grant Peacock | Phase change compressor |
US9611868B2 (en) * | 2010-04-09 | 2017-04-04 | Shipstone Corporation | System and method for energy storage and retrieval |
CA3099437A1 (en) * | 2018-05-17 | 2019-11-21 | Hydrostor Inc. | A hydrostatically compensated compressed gas energy storage system |
-
2022
- 2022-08-10 CN CN202210956956.3A patent/CN115435235B/zh active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0622698U (ja) * | 1992-08-27 | 1994-03-25 | 株式会社神戸製鋼所 | 液体ヘリウム貯槽の内圧保持装置 |
CN111706414A (zh) * | 2020-06-09 | 2020-09-25 | 西安交通大学 | 利用可凝气体相变的准等压放电等温压缩储能系统与方法 |
Also Published As
Publication number | Publication date |
---|---|
CN115435235A (zh) | 2022-12-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN107461603B (zh) | 储气储热一体的干热岩再热压缩空气储能系统 | |
WO2021143349A1 (zh) | 一种重力压缩空气储能系统及其工作方法 | |
CN112065634B (zh) | 一种基于废弃矿井的地下抽水蓄能复合压缩空气储能系统及方法 | |
CN112065635B (zh) | 一种基于废弃矿井的地下恒压压缩空气复合抽水储能系统及方法 | |
Wang et al. | Thermal energy storage for solar energy utilization: Fundamentals and applications | |
CN108895017A (zh) | 一种多级恒压压缩空气储能装置 | |
CN108518894B (zh) | 储能式地埋管换热系统 | |
CN115435235B (zh) | 双腔式的地下恒温阶梯储气系统及其工作方法 | |
US20210364172A1 (en) | Cold storage system and method of operating a multi-packed bed cold storage system | |
CN106679478A (zh) | 一种基于复合相变储热材料层的高效储热换热装置 | |
CN111502893B (zh) | 一种利用高密度介质维持压力恒定的发电系统 | |
CN212003288U (zh) | 一种基于高密度介质维持压力恒定的发电系统 | |
CN111535886B (zh) | 一种多能联合的压力恒定的发电系统 | |
CN115034438A (zh) | 压缩空气储能电站主机参数与人工储气库容积匹配优化方法 | |
Mozayeni | Development of a combined pumped hydro and compressed air energy storage system | |
CN211011906U (zh) | 一种电蓄热式热风炉 | |
CN110884821B (zh) | 一种具有蓄热温控功能的地下储气库 | |
Hyrzyński et al. | Thermodynamic analysis of the compressed air energy storage system coupled with the underground thermal energy storage | |
CN114016986A (zh) | 一种压气储能与增强型地热开采耦合系统 | |
CN108917415B (zh) | 间断式热源热水储热综合利用系统 | |
CN209637802U (zh) | 用于煤矿采空区的防灭火系统 | |
Chen et al. | Performance study of salt cavern air storage based non-supplementary fired compressed air energy storage system | |
CN110887392A (zh) | 以超临界二氧化碳为循环工质的熔盐电蓄热发电系统 | |
CN114993086A (zh) | 一种分层式堆积床储能系统 | |
CN212690123U (zh) | 一种多能联合发电系统 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |