WO2023237019A1 - 分层式重力块地下布置的重力压缩空气储能装置 - Google Patents

分层式重力块地下布置的重力压缩空气储能装置 Download PDF

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Publication number
WO2023237019A1
WO2023237019A1 PCT/CN2023/098968 CN2023098968W WO2023237019A1 WO 2023237019 A1 WO2023237019 A1 WO 2023237019A1 CN 2023098968 W CN2023098968 W CN 2023098968W WO 2023237019 A1 WO2023237019 A1 WO 2023237019A1
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WIPO (PCT)
Prior art keywords
gravity
pressure
bearing cylinder
wall
locking
Prior art date
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Ceased
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PCT/CN2023/098968
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English (en)
French (fr)
Inventor
文军
李阳
张步斌
赵瀚辰
姚明宇
杨成龙
姬海民
宋晓辉
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Xian Thermal Power Research Institute Co Ltd
Huaneng Group Technology Innovation Center Co Ltd
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Xian Thermal Power Research Institute Co Ltd
Huaneng Group Technology Innovation Center Co Ltd
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Application filed by Xian Thermal Power Research Institute Co Ltd, Huaneng Group Technology Innovation Center Co Ltd filed Critical Xian Thermal Power Research Institute Co Ltd
Publication of WO2023237019A1 publication Critical patent/WO2023237019A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
    • F03G3/00—Other motors, e.g. gravity or inertia motors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B41/00—Pumping installations or systems specially adapted for elastic fluids
    • F04B41/02—Pumping installations or systems specially adapted for elastic fluids having reservoirs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin

Definitions

  • the present disclosure relates to the technical field of electrical energy storage, and in particular to a gravity compressed air energy storage device arranged underground with layered gravity blocks.
  • Gravity compressed air energy storage is achieved by setting up a gravity block in the shaft.
  • the gravity block and the shaft are sealed and connected by a sealing film.
  • a sealed gas storage cavity is formed in the shaft below the gravity block for the storage of high-pressure gas.
  • the present disclosure proposes a gravity compressed air energy storage device arranged underground with layered gravity blocks, including:
  • a shaft with a multi-level locking platform provided on the inner wall of the shaft from bottom to top in the axial direction;
  • the pressure-bearing cylinder is movably plugged into the shaft, and the top outer wall of the pressure-bearing cylinder is provided with a limiting component, so that the pressure-bearing cylinder is supported by the limiting component when it is at the lowest limit.
  • the outer wall of the pressure-bearing cylinder and the inner wall of the shaft are sealingly connected through a sealing assembly;
  • Multi-stage gravity block groups are respectively arranged on the corresponding multi-stage locking platforms.
  • the gravity block groups located on the first-level locking platform are arranged on the top of the pressure-bearing tube to pass all
  • the pressure-bearing cylinder supports the gravity block group on the primary locking platform.
  • a bottom immersed tube is provided on the inner wall of the shaft below the primary locking platform, and the sealing assembly is connected between the inner wall of the bottom immersed tube and the outer wall of the pressure-bearing cylinder.
  • guide rails are provided on the inner wall of the shaft between each two adjacent levels of the locking platforms, and a first-level guide assembly that cooperates with the guide rails is provided on the gravity block group to pass through the guide rails. Limit the position of the gravity block group.
  • the locking platform is a locking ring pre-embedded in the inner wall of the shaft;
  • the limiting component is a support ring disposed on the outer wall of the top end of the pressure-bearing cylinder.
  • the outer diameter of the support ring is larger than the inner diameter of the locking ring of the primary locking platform.
  • the outer diameter of the support ring is smaller than the inner diameter of the locking ring of the first-level locking platform.
  • the inner diameter of the locking ring of the locking platform above the primary locking platform.
  • the outer wall of the support ring is provided with a secondary guide component that cooperates with the guide rail.
  • the gravity block group at each stage includes a plurality of identical gravity blocks, and the diameter of each gravity block is larger than the inner diameter of the locking ring of the supporting locking platform and smaller than the locking ring of the upper locking platform.
  • the inner diameter is such that when multiple gravity blocks are installed, they can pass through the upper locking platform and reach the supported locking platform.
  • the pressure-bearing cylinder is filled with a plurality of filling gravity blocks.
  • the inner wall of the pressure-bearing cylinder is provided with a plurality of positioning bars along the axial direction, and the side walls of the positioning bars are provided with positioning chute along the axial direction.
  • the side walls of the filling gravity block The wall is provided with a positioning slide block that cooperates with the positioning chute.
  • a plurality of support rings are provided on the inner wall of the pressure-bearing cylinder along the axial direction, and the plurality of support rings are coaxially arranged with the pressure-bearing cylinder.
  • the bottom of the pressure-bearing cylinder has a tapered structure.
  • Figure 1 is a schematic structural diagram of a gravity compressed air energy storage device arranged underground with layered gravity blocks proposed by an embodiment of the present disclosure
  • Figure 2 is a partial structural schematic diagram of Figure 1 of the present disclosure
  • Figure 3 is a schematic structural diagram of the sealing assembly of the present disclosure
  • the present disclosure aims to solve one of the technical problems in the related art, at least to a certain extent.
  • the purpose of the present disclosure is to propose a gravity compressed air energy storage device arranged underground with layered gravity blocks.
  • the multi-level locking platform can control multiple The multi-level gravity block group is supported, which is not only convenient for hoisting, but also reduces the force acting on the locking platform through the dispersed support of the multi-level locking platform and reduces the difficulty of construction.
  • Figure 1 is a schematic structural diagram of a gravity compressed air energy storage device arranged underground with layered gravity blocks proposed by an embodiment of the present disclosure.
  • a gravity compressed air energy storage device arranged underground with layered gravity blocks includes a shaft 1, a pressure-bearing cylinder 2 and a multi-stage gravity block group 3;
  • the inner wall of the shaft 1 is provided with a multi-level locking platform 4 from bottom to top in the axial direction. That is to say, the bottom of the shaft 1 is a first-level locking platform, and the adjacent one above the first-level locking platform is a second-level locking platform. Adjacent above the first-level locking platform is the third-level locking platform, and so on, up to the N-level locking platform.
  • the pressure-bearing cylinder 2 is movably plugged into the shaft 1, and a limiting component 21 is provided on the top outer wall of the pressure-bearing cylinder 2, so that When the pressure-bearing cylinder 2 is at its lowest position, it is supported on the first-level locking platform 41 at the bottom of the shaft 1 through the limit assembly 21.
  • the outer wall of the pressure-bearing cylinder 2 and the inner wall of the shaft 1 are sealed and connected through the sealing assembly 5, so that the pressure-bearing cylinder 2 is sealed with the inner wall of the shaft 1.
  • the pressure cylinder 2, the sealing component 5 and the shaft 1 are located in the space below the sealing component 5 to form a gas storage chamber 6.
  • the multi-level gravity block groups 3 are respectively arranged on the corresponding multi-level locking platforms 4. That is to say, each level of the locking platform 4 is provided with a corresponding gravity block group 3, and the first-level locking platform 41 is provided with a first-level gravity block. Group 31, the secondary locking platform 42 is provided with a secondary gravity block group 32, and so on, the top N-level locking platform is provided with an N-level gravity block group. In addition, due to the limit on the outer wall of the top of the pressure-bearing cylinder 2 The position assembly 21 is supported on the first-level locking platform 41.
  • the gravity block group 3 (that is, the first-level gravity block group 31) located on the first-level locking platform 41 is directly set on the top of the pressure-bearing cylinder 2, directly connected with the pressure-bearing cylinder. 2 are connected at the top to support the gravity block group 3 (that is, the first-level gravity block group 31) on the first-level locking platform 41 through the pressure-bearing tube 2, by setting the multi-level gravity block group 3 and the corresponding multi-level gravity block group 3
  • the multi-level locking platform 4 provides graded support to the multi-level gravity block group 3 through the multi-level locking platform 4, so that the multi-level gravity block group 3 will not concentrate all its power on one locking platform, which will cause damage to the air storage chamber 6 When there is no compressed air, the multi-stage gravity block group 3 can only be supported by a locking platform. When the required weight of the multi-stage gravity block group 3 is relatively large, the load-bearing capacity of one locking platform may not be enough, and a locking platform needs to be supported. The platform is locked and reinforced
  • the air storage chamber 6 is connected to the air compressor unit and the air expansion unit.
  • the excess electricity drives the air compressor unit through the motor to perform work on the gas.
  • the obtained compressed air is passed into the air storage chamber 6, and the pressure-bearing cylinder is driven by the compressed air pressure. 2 moves upward.
  • the pressure-bearing cylinder 2 moves upward, it drives the primary gravity block group 31 to move upward.
  • the primary gravity block group 31 moves upward to connect with the secondary gravity block group 32
  • the pressure in the air storage chamber 6 increases until The secondary gravity block group 32 is pushed up together and moved upward, and so on, to achieve energy storage.
  • the compressed air in the air storage chamber 6 is passed into the air expansion unit to perform work and is converted into electrical energy.
  • the multi-level gravity block group 3 moves downward.
  • the weight of the remaining multi-stage gravity block group is reduced, and the compressed air continues to do work outwards.
  • the remaining The gravity of the multi-stage gravity block is greater than the pressure of the compressed air, and the remaining multi-stage gravity blocks continue to move downward, and so on, until the pressure-bearing cylinder 2 moves downward to the limit assembly 21 supported on the first-level locking platform.
  • the graded gravity block group 31 is supported on the top of the pressure-bearing tube 2.
  • the inner wall of the shaft 1 is provided with a bottom immersed tube 11 below the primary locking platform 41 .
  • the sealing assembly 5 is connected between the inner wall of the bottom immersed tube 11 and the outer wall of the pressure-bearing cylinder 2 , and the pressure-bearing cylinder 2 is a steel plate.
  • the sealing performance can be improved and the installation of the sealing assembly 5 is facilitated.
  • the locking platform 4 is a locking ring pre-embedded in the inner wall of the shaft 1, and the limiting component 21 is a support ring provided on the outer wall of the top end of the pressure-bearing cylinder 2.
  • the outer diameter of the support ring is larger than the inner diameter of the locking ring of the primary locking platform 41. , smaller than the inner diameter of the locking ring of the locking platform above the primary locking platform 41, that is to say, the pressure-bearing cylinder 2 can pass through the locking platform above the primary locking platform 41, but cannot pass through the primary locking platform 41, through a
  • the level locking platform 41 performs support and limiting.
  • a plurality of guide rails distributed in the vertical direction are provided on the inner wall of the shaft 1 between each two adjacent levels of locking platforms 4.
  • Four guide rails can be provided, and each gravity block group 3 is provided with
  • the first-level guide assembly cooperates with the guide rail to limit the position of each gravity block group 3 through the guide rail, so that the center of gravity of the gravity block group 3 will not shift when the gravity block group 3 moves up and down.
  • the outer wall of the support ring is provided with a secondary guide component that cooperates with the guide rail.
  • the pressure-bearing cylinder 2 can be limited by the guide rail during the up and down movement, so that the center of gravity of the pressure-bearing cylinder 2 will not shift during the up and down movement, and the pressure-bearing cylinder 2 will not shift.
  • the center of the cylinder 2 and the center of gravity of each stage gravity block group 3 are both on the axis of the pressure-bearing cylinder 2, so that the pressure-bearing cylinder 2 and the multi-stage gravity block group 3 will not tilt during the up and down movement, and there will be no Due to the large force exerted on the guide rail due to tilt, the guide rail may be deformed or damaged.
  • both the primary guide assembly and the secondary guide assembly may be configured as needle roller cam guides that cooperate with the guide rails.
  • each gravity block group 3 includes a plurality of identical gravity blocks 8 .
  • Each gravity block 8 can be provided with a secondary guide assembly that cooperates with the guide rail.
  • the diameter of each gravity block 8 is larger than the supporting locking platform.
  • the inner diameter of the locking ring 4 is smaller than the inner diameter of the locking ring of the upper locking platform 4, so that when the multiple gravity blocks 8 are installed, they can pass through the upper locking platform 4 and reach the supported locking platform 4. That is to say, each level
  • the outer diameter of the gravity block 8 on the gravity block group 3 is smaller than the inner diameter of the locking ring on the locking platform above the locking platform 4 that supports the gravity block 8, so that the gravity block 8 can pass through multiple locks above during installation.
  • pressure-bearing cylinder 2 can have various structural arrangements.
  • the pressure-bearing cylinder 2 is filled with multiple filling gravity blocks 22, and the multiple filling gravity blocks 22 are stacked layer by layer in the pressure-bearing cylinder 2.
  • the weight of the pressure-bearing cylinder 2 can be reduced, making hoisting convenient, and a plurality of filling gravity blocks 22 can be filled into the pressure-bearing cylinder 2 after hoisting, so that while ensuring convenient hoisting, the space of the pressure-bearing cylinder can be reasonably utilized to increase the size of the pressure-bearing cylinder. 2.
  • the overall gravity increases the storage of compressed air.
  • the energy storage pressure in the air storage chamber 6 is about 10Mpa, and the gravity block is generally made of concrete, air leakage will occur under the action of high-pressure air.
  • the pressure cylinder 2 is wrapped around the multiple filling gravity blocks 22, which can improve air tightness and prevent leakage. gas, thus ensuring the sealing properties of the gas storage cavity 6, which can withstand higher pressure and improve the energy density of the system energy storage.
  • the inner wall of the pressure-bearing cylinder 2 is provided with a plurality of positioning bars 23 along the axial direction.
  • the side walls of the positioning bars 23 are provided with positioning chute along the axial direction.
  • the filling gravity block 22 is provided on the side wall of the gravity block 22 .
  • the pressure-bearing cylinder 2 has a cylindrical structure with a cavity inside, in order to improve the strength of the pressure-bearing cylinder 2, a plurality of support rings 24 are provided on the inner wall of the pressure-bearing cylinder 2 along the axial direction. The plurality of support rings 24 are connected with The pressure-bearing cylinder 2 is arranged coaxially, and the positioning bar 23 is arranged on the support ring 24.
  • the bottom of the pressure-bearing cylinder 2 has a tapered structure, so that the bottom of the pressure-bearing cylinder 2 is more evenly stressed in a high-pressure environment without deformation.
  • immersed tubes 12 are provided on the inner walls of the shaft 1 between two adjacent locking platforms 4, and the guide rails are fixed on the inner walls of the immersed tubes 12.
  • Each immersed tube 12 has an adjacent locking tube 12 above it.
  • the bottom of the platform 4 is connected to provide certain support to the locking platform 4.
  • the top of the bottom immersed tube 11 is connected to the bottom of the first-level locking platform 41 to provide certain support to the first-level locking platform 41.
  • the bottom immersed tube 11 The outer wall of the top end extends vertically outward to form a clamping ring 111.
  • a clamping platform 13 is provided on the inner wall of the shaft 1, and the clamping ring 111 is clamped on the clamping platform 13.
  • sealing assembly 5 can have various structures.
  • the sealing component 5 is a sealing film, and the sealing component 5 is a cylindrical structure.
  • the sealing component 5 includes a plurality of supporting ribs 51 , and the plurality of supporting ribs 51 surround the circumferential side of the cylindrical structure. Two adjacent ones are The support ribs 51 are connected by an elastic sealing film 52 to form a cylindrical structure surrounded by a plurality of support ribs 51 and the elastic sealing film 52.
  • the top of the sealing film is bent inward to form an inner ring and an outer ring. The top ends are connected, the bottom end of the inner ring is sealingly connected to the outer wall of the pressure-bearing tube 2, and the bottom end of the outer ring is connected to the inner wall of the shaft 1.
  • the longitudinal tensile strength of the sealing film can be improved and the gas can be stored.
  • the elastic area of the elastic sealing film 52 of the sealing film bulges toward the low-pressure side and fits the wall of the shaft 1 and the pressure-bearing cylinder 2 to provide reverse support and reduce the circumferential pulling force of the sealing film.
  • the pressure-bearing cylinder 2 moves to different heights, the different bending positions of the sealing film will cause the sealing film to extrusion and deform itself, which will reduce the service life of the sealing film. It is necessary to improve the performance of the sealing film material, which will increase the cost.
  • the arrangement of the sealing film between two adjacent support ribs 51 can provide a margin for inward deformation of the sealing film, reduce the internal stress of the sealing film caused by deformation, increase the service life of the sealing film, and reduce the cost of sealing film materials.
  • the outer diameter of the outer ring is the same as the inner diameter of the shaft 1, so that the support ribs 51 and the elastic sealing membrane 52 of the outer ring are connected to the inner wall of the shaft 1, and the support ribs 51 of the inner ring are connected to the outer wall of the pressure-bearing tube 2. Then, when the air storage chamber 4 is inflated, the elastic sealing film 52 bulges toward the low-pressure side under the action of pressure, so that the elastic sealing film 52 can also connect with the outer wall of the pressure-bearing cylinder 2 . At the same time, when the sealing film is bent to form the inner ring and the outer ring, wrinkles are formed on the circumferential side of the folded inner ring.
  • the folds squeeze each other, causing their own extrusion deformation and internal stress, which affects the service life of the sealing film.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)

Abstract

一种分层式重力块地下布置的重力压缩空气储能装置，包括竖井（1）、承压筒（2）和多级重力块组（3），竖井（1）内壁上沿轴向方向从下到上设置有多级锁定平台（4）；承压筒（2）活动插接在竖井（1）中，承压筒（2）的顶端外壁设置有限位组件（21），以使承压筒（2）在最低限位时通过限位组件（21）支撑在竖井（1）最底部的一级锁定平台（41）上，多级重力块组（3）分别设置在相应的多级锁定平台（4）上，位于一级锁定平台（41）上的重力块组（31）设置在承压筒（2）顶部，以通过承压筒（2）对一级锁定平台（41）上的重力块组（31）进行支撑。

Description

分层式重力块地下布置的重力压缩空气储能装置
相关申请的交叉引用
本申请基于申请号为202210642211.X、申请日为2022年06月08日的中国专利申请提出，并要求该中国专利申请的优先权，该中国专利申请的全部内容在此引入本申请作为参考。
技术领域
本公开涉及电能存储技术领域，尤其涉及一种分层式重力块地下布置的重力压缩空气储能装置。
背景技术
重力压缩空气储能是通过在竖井中设置重力块，重力块与竖井之间通过密封膜密封连接，位于重力块下方的竖井中形成密封的储气腔，用于高压气体的存储，通过将空气进行压缩后通入储气腔中将压缩空气的能量部分转化为重力块的重力势能进行存储，但是存储量较大时，需要较大重量的重力块，直接将重力块设置成一个整体的结构，重量太大，吊装不方便，并且由于储气腔中需要留有一定空间，向内部通入足够的压缩空气，因此需要对重力块进行支撑，当储气压力较大时，重力压块重量较大，高度达数百米，支撑平台施工难度大，且存在较大安全隐患。
发明内容
本公开提出了一种分层式重力块地下布置的重力压缩空气储能装置，包括：
竖井，所述竖井内壁上沿轴向方向从下到上设置有多级锁定平台；
承压筒，所述承压筒活动插接在所述竖井中，所述承压筒的顶端外壁设置有限位组件，以使所述承压筒在最低限位时通过所述限位组件支撑在所述竖井最底部的一级锁定平台上，所述承压筒的外壁与所述竖井的内壁之间通过密封组件密封连接；
多级重力块组，多级重力块组分别设置在相应的多级所述锁定平台上，位于所述一级锁定平台上的所述重力块组设置在所述承压筒顶部，以通过所述承压筒对所述一级锁定平台上的所述重力块组进行支撑。
在一些实施例中，所述竖井内壁位于所述一级锁定平台的下方设置有底部沉管，所述密封组件连接在所述底部沉管内壁与所述承压筒外壁之间。
在一些实施例中，每相邻两级所述锁定平台之间的竖井内壁上均设置有导轨，所述重力块组上设置有与所述导轨配合的一级导向组件，以通过所述导轨对所述重力块组进行限位。
在一些实施例中，所述锁定平台为预埋在所述竖井内壁的锁定圈；
所述限位组件为设置在所述承压筒顶端外壁上的支撑圈，所述支撑圈的外径大于所述一级锁定平台的锁定圈的内径，所述支撑圈的外径小于所述一级锁定平台上方的所述锁定平台的锁定圈的内径。
在一些实施例中，所述支撑圈的外壁设置有与所述导轨配合的二级导向组件。
在一些实施例中，每级所述重力块组包括多个相同的重力块，每个重力块的直径大于支撑的所述锁定平台的锁定圈的内径，小于上方的所述锁定平台的锁定圈的内径，以使多个所述重力块安装时能够穿过上方的所述锁定平台到达支撑的所述锁定平台上。
在一些实施例中，所述承压筒内部填充有多个填充重力块。
在一些实施例中，所述承压筒内壁设置有沿轴向方向的多个定位条，所述定位条的侧壁上设置有沿轴向方向的定位滑槽，所述填充重力块的侧壁上设置有与所述定位滑槽配合的定位滑块。
在一些实施例中，所述承压筒内壁上沿轴向方向设置有多个支撑环，多个所述支撑环与所述承压筒同轴心设置。
在一些实施例中，所述承压筒的底部为锥形结构。
本公开附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本公开的实践了解到。
附图说明
本公开上述的和/或附加的方面和优点从下面结合附图对实施例的描述中将变得明显和容易理解，其中：
图1是本公开一实施例提出的分层式重力块地下布置的重力压缩空气储能装置的结构示意图；
图2是本公开图1的局部结构示意图；
图3是本公开密封组件的结构示意图；
图中，1、竖井；11、底部沉管；111、卡圈；12、沉管；13、卡台；2、承压筒；21、限位组件；22、填充重力块；23、定位条；24、支撑环；3、重力块组；31、一级重力块组；32、二级重力块组；4、锁定平台；41、一级锁定平台；5、密封组件；51、支撑筋；52、弹性密封膜；6、储气腔；8、重力块。
具体实施方式
下面详细描述本公开的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本公开，而不能理解为对本公开的限制。相反，本公开的实施例包括落入所附加权利要求书的精神和内涵范围内的所有变化、修改和等同物。
本公开旨在至少在一定程度上解决相关技术中的技术问题之一。
为此，本公开的目的在于提出一种分层式重力块地下布置的重力压缩空气储能装置，通过设置多级重力块组，同时对应设置多级锁定平台，通过多级锁定平台分别对多级重力块组进行支撑，不仅吊装方便，并且通过多级锁定平台的分散支撑，可以减少作用于锁定平台上的作用力，降低施工难度。
图1是本公开一实施例提出的一种分层式重力块地下布置的重力压缩空气储能装置的结构示意图。
参见图1-3，一种分层式重力块地下布置的重力压缩空气储能装置，包括竖井1、承压筒2和多级重力块组3；
竖井1内壁上沿轴向方向从下到上设置有多级锁定平台4，也就是说，竖井1最底部的是一级锁定平台，一级锁定平台上方相邻的是二级锁定平台，二级锁定平台上方相邻的是三级锁定平台，以此类推，直到N级锁定平台，承压筒2活动插接在竖井1中，承压筒2的顶端外壁设置有限位组件21，以使承压筒2在最低限位时通过限位组件21支撑在竖井1最底部的一级锁定平台41上，承压筒2的外壁与竖井1的内壁之间通过密封组件5密封连接，使得承压筒2、密封组件5以及竖井1位于密封组件5的下方空间之间围成储气腔6，当承压筒2向下移动至限位组件21与一级锁定平台41相接时，此时承压筒2停止移动，承压筒2达到最低限位，此时，储气腔6中保留一定空间，能够保障向储气腔6中通入足量压缩空气时承压筒2能够启动向上移动。
多级重力块组3分别设置在相应的多级锁定平台4上，也就是说，每级锁定平台4上均对应设置有相应的重力块组3，一级锁定平台41上设置有一级重力块组31，二级锁定平台42上设置有二级重力块组32，以此类推，最顶端的N级锁定平台上设置有N级重力块组，另外，由于承压筒2顶部外壁上的限位组件21支撑在一级锁定平台41上，那么，位于一级锁定平台41上的重力块组3(也就是一级重力块组31)直接设置在承压筒2顶部，直接与承压筒2顶部相接，以通过承压筒2对一级锁定平台41上的重力块组3(也就是一级重力块组31)进行支撑，通过设置多级重力块组3以及与其相对应的多级锁定平台4，通过多级锁定平台4对多级重力块组3进行分级支撑，使得多级重力块组3不会将全部的力量集中在一个锁定平台上，会造成在储气腔6中没有通入压缩空气时，只能通过一个锁定平台对多级重力块组3进行支撑，当需要的多级重力块组3的重量较大时，一个锁定平台的承重能力可能不够，需要对一个锁定平台进行层层加固，提高施工难度。
详细来说，储气腔6连接空气压缩机组和空气膨胀机组，富余电力通过电动机带动空气压缩机组对气体做功，将得到的压缩空气通入储气腔6中，通过压缩空气压力带动承压筒2向上移动，承压筒2向上移动时带动一级重力块组31向上移动，一级重力块组31向上移动至与二级重力块组32相接时，储气腔6中压力增大直到将二级重力块组32一起向上顶起，向上移动，以此类推，实现能量的存储，在释能时，储气腔6中的压缩空气通入空气膨胀机组中进行做功，转化为电能，多级重力块组3向下移动，当竖井1最顶端的N级重力块组下方的一级重力块组31到N-1级重力块组穿过N级锁定平台后直到N级重力块组通过N级锁定平台限位支撑停止移动，此时剩余的多级重力块组的重量减小，压缩空气持续向外做功，直到压缩空气的压力与剩余多级重力块的重力平衡时，再向外做功，剩余多级重力块的重力大于压缩空气的压力，剩余多级重力块继续向下移动，直到N-1级重力块组被N-1级锁定平台相接，通过N-1级锁定平台限位支撑，此时余下的多级重力块组的重量减少，压缩空气持续向外做功，直到压缩空气的压力与余下的多级重力块的重力平衡时，再向外做功，余下的 多级重力块的重力大于压缩空气的压力，余下的多级重力块继续向下移动，以此类推，直到承压筒2向下移动至限位组件21支撑在一级锁定平台上时，一级重力块组31支撑在承压筒2顶部，通过逐级锁定，能够实现多级重力块组3的多级支撑，使得每级锁定平台承受的重量均较小，提高了锁定平台的使用寿命。
在一些实施例中，竖井1内壁位于一级锁定平台41的下方设置有底部沉管11，密封组件5连接在底部沉管11内壁与承压筒2外壁之间，并且承压筒2为钢板围成的圆筒状结构，由于底部沉管11的内壁以及承压筒2的外壁均为光滑面，在与密封组件5连接时，能够提高密封性能，便于密封组件5的安装。
另外，锁定平台4为预埋在竖井1内壁的锁定圈，限位组件21为设置在承压筒2顶端外壁上的支撑圈，支撑圈的外径大于一级锁定平台41的锁定圈的内径，小于一级锁定平台41上方的锁定平台的锁定圈的内径，也就是说，承压筒2能够穿过一级锁定平台41上方的锁定平台，而不能穿过一级锁定平台41，通过一级锁定平台41进行支撑限位。
需要说明的是，重力块组3在竖井1中安装放置的方式有多种。
作为一种可能的方式，每相邻两级锁定平台4之间的竖井1内壁上均设置有多个沿竖直方向分布的导轨，导轨可以设置4个，每级重力块组3上设置有与导轨配合的一级导向组件，以通过导轨对每级重力块组3进行限位，使得重力块组3上下移动过程中重心不会偏移。
另外，支撑圈的外壁设置有与导轨配合的二级导向组件，承压筒2上下移动过程中能够通过导轨进行限位，使得承压筒2在上下移动过程中重心不会偏移，承压筒2的中心和每级重力块组3的重心均在承压筒2的轴线上，使得承压筒2和多级重力块组3上下移动过程中不会出现倾斜的情况，也就不会由于倾斜造成对导轨施加较大作用力，使得导轨可能会变形或损坏。
优选地，一级导向组件和二级导向组件可以均设置为与导轨配合的滚针凸轮导向器。
在一些实施例中，每级重力块组3包括多个相同的重力块8，每个重力块8上可以设置与导轨配合的二级导向组件，每个重力块8的直径大于支撑的锁定平台4的锁定圈的内径，小于上方的锁定平台4的锁定圈的内径，以使多个重力块8安装时能够穿过上方的锁定平台4到达支撑的锁定平台4上，也就是说，每级重力块组3上重力块8的外径均比支撑该重力块8的锁定平添4上方的锁定平台上的锁定圈的内径要小，使得重力块8在安装时能够穿过上方的多个锁定圈到达支撑的锁定圈上时，由于支撑的锁定圈的内径小于该重力块8的外径，实现对该重力块8的限位作用。
需要详细说明的是，承压筒2的结构设置可以有多种。
作为一种可能的结构，承压筒2内部填充有多个填充重力块22，多个填充重力块22层层叠加堆叠在承压筒2中，通过将承压筒2设置成筒状结构，能够降低承压筒2的重量，使得吊装方便，并且在吊装后再向承压筒2中填充多个填充重力块22，使得在保障方便吊装的同时，又能够合理利用空间增大承压筒2整体的重力，提高压缩空气的储量，由于储气腔6中储能压力较大约为10Mpa，而重力块一般都是用混凝土制备，在高压空气作用下会出现漏气的情况，通过设置承压筒2包覆在多个填充重力块22外部，能够提高气密性，防止漏 气，进而保证储气腔6的密封特性，可以承受较高的压力，提升系统储能的能量密度。
在一些实施例中，承压筒2内壁设置有沿轴向方向的多个定位条23，定位条23的侧壁上设置有沿轴向方向的定位滑槽，填充重力块22的侧壁上设置有与定位滑槽配合的定位滑块，定位滑块能够沿定位滑槽上下移动，通过定位滑槽的限位作用，能够保障多个填充重力块22的重心都在承压筒2的轴线上，使得整个承压筒2上下移动过程中重心不会偏移。
另外，由于承压筒2为筒状结构，内部是空腔，为了提高承压筒2的强度，承压筒2内壁上沿轴向方向设置有多个支撑环24，多个支撑环24与承压筒2同轴心设置，定位条23设置在支撑环24上。
在一些实施例中，承压筒2的底部为锥形结构，使承压筒2底部在高压环境下受力更均匀，不产生变形。
另外，需要说明的是，位于相邻两个锁定平台4之间的竖井1内壁上均设置有沉管12，导轨固定在沉管12内壁上，每个沉管12均与其上方相邻的锁定平台4底部相接，可以对锁定平台4有一定支撑，底部沉管11顶端与一级锁定平台41的底部相接，用于对一级锁定平台41有一定的支撑，另外，底部沉管11的顶端外壁向外垂直延伸形成卡圈111，竖井1内壁上设置有卡台13，卡圈111卡接在卡台13上。
需要说明的是，密封组件5的结构可以有多种。
作为一种可能的结构，密封组件5为密封膜，密封组件5为筒状结构，密封组件5包括多个支撑筋51，多个支撑筋51围绕在筒状结构的周侧，两个相邻支撑筋51之间通过弹性密封膜52连接，以通过多个支撑筋51和弹性密封膜52围成筒状结构，密封膜顶端向内折弯形成内环和外环，内环和外环的顶端相连，内环的底端密封连接在承压筒2的外壁上，外环的底端连接在竖井1的内壁上，通过设置支撑筋51能够提高密封膜纵向的抗拉强度，并且储气室4内恒压充气时，密封膜的弹性密封膜52的弹性区域向低压侧鼓起，与竖井1壁面和承压筒2贴合，提供反向支撑力，降低密封膜环向拉力，另外，承压筒2运动至不同高度时，密封膜的弯折位置不同导致密封膜产生自身挤压形变，会降低密封膜的使用寿命，需要提高密封膜材料的性能，进而会增大成本，通过相邻两个支撑筋51之间密封膜的设置可以提供密封膜向内形变余量，降低形变产生的密封膜内部应力，提高密封膜使用寿命，降低密封膜材料成本。
进一步来说，外环的外径与竖井1的内径相同，以使外环的支撑筋51和弹性密封膜52与竖井1内壁相接，内环的支撑筋51与承压筒2的外壁相接，当储气室4中充气时，在压力作用下，弹性密封膜52向低压侧鼓起，进而使得弹性密封膜52也能够与承压筒2外壁相接。同时，在密封膜折弯形成内环和外环时，翻折后的内环周侧形成褶皱，褶皱之间相互挤压，会产生自身挤压形变，产生内部应力，影响密封膜的使用寿命，通过设置支撑筋51，通过支撑筋51的固定，使得弹性密封膜52褶皱凸起后，相邻两个褶皱凸起之间通过支撑筋51的间隔不会产生挤压和内部应力，从而降低密封膜材料成本。
需要说明的是，在本公开的描述中，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性。此外，在本公开的描述中，除非另有说明，“多个”的含 义是两个或两个以上。
流程图中或在此以其他方式描述的任何过程或方法描述可以被理解为，表示包括一个或更多个用于实现特定逻辑功能或过程的步骤的可执行指令的代码的模块、片段或部分，并且本公开的优选实施方式的范围包括另外的实现，其中可以不按所示出或讨论的顺序，包括根据所涉及的功能按基本同时的方式或按相反的顺序，来执行功能，这应被本公开的实施例所属技术领域的技术人员所理解。
在本说明书的描述中，参考术语“一个实施例”、“一些实施例”、“示例”、“具体示例”、或“一些示例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或者特点包含于本公开的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
尽管上面已经示出和描述了本公开的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本公开的限制，本领域的普通技术人员在本公开的范围内可以对上述实施例进行变化、修改、替换和变型。

Claims (10)

  1. 一种分层式重力块地下布置的重力压缩空气储能装置，包括：
    竖井，所述竖井内壁上沿轴向方向从下到上设置有多级锁定平台；
    承压筒，所述承压筒活动插接在所述竖井中，所述承压筒的顶端外壁设置有限位组件，以使所述承压筒在最低限位时通过所述限位组件支撑在所述竖井最底部的一级锁定平台上，所述承压筒的外壁与所述竖井的内壁之间通过密封组件密封连接；
    多级重力块组，多级重力块组分别设置在相应的多级所述锁定平台上，位于所述一级锁定平台上的所述重力块组设置在所述承压筒顶部，以通过所述承压筒对所述一级锁定平台上的所述重力块组进行支撑。
  2. 如权利要求1所述的分层式重力块地下布置的重力压缩空气储能装置，其中，所述竖井内壁位于所述一级锁定平台的下方设置有底部沉管，所述密封组件连接在所述底部沉管内壁与所述承压筒外壁之间。
  3. 如权利要求1所述的分层式重力块地下布置的重力压缩空气储能装置，其中，每相邻两级所述锁定平台之间的竖井内壁上均设置有导轨，所述重力块组上设置有与所述导轨配合的一级导向组件，以通过所述导轨对所述重力块组进行限位。
  4. 如权利要求3所述的分层式重力块地下布置的重力压缩空气储能装置，其中，所述锁定平台为预埋在所述竖井内壁的锁定圈；
    所述限位组件为设置在所述承压筒顶端外壁上的支撑圈，所述支撑圈的外径大于所述一级锁定平台的锁定圈的内径，所述支撑圈的外径小于所述一级锁定平台上方的所述锁定平台的锁定圈的内径。
  5. 如权利要求4所述的分层式重力块地下布置的重力压缩空气储能装置，其中，所述支撑圈的外壁设置有与所述导轨配合的二级导向组件。
  6. 如权利要求4所述的分层式重力块地下布置的重力压缩空气储能装置，其中，每级所述重力块组包括多个相同的重力块，每个重力块的直径大于支撑的所述锁定平台的锁定圈的内径，小于上方的所述锁定平台的锁定圈的内径，以使多个所述重力块安装时能够穿过上方的所述锁定平台到达支撑的所述锁定平台上。
  7. 如权利要求1所述的分层式重力块地下布置的重力压缩空气储能装置，其中，所述承压筒内部填充有多个填充重力块。
  8. 如权利要求7所述的分层式重力块地下布置的重力压缩空气储能装置，其中，所述承压筒内壁设置有沿轴向方向的多个定位条，所述定位条的侧壁上设置有沿轴向方向的定位滑槽，所述填充重力块的侧壁上设置有与所述定位滑槽配合的定位滑块。
  9. 如权利要求1所述的分层式重力块地下布置的重力压缩空气储能装置，其中，所述承压筒内壁上沿轴向方向设置有多个支撑环，多个所述支撑环与所述承压筒同轴心设置。
  10. 如权利要求1所述的分层式重力块地下布置的重力压缩空气储能装置，其中，所述承压筒的底部为锥形结构。
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