WO2013174162A1 - 超高压电热储能装置 - Google Patents

超高压电热储能装置 Download PDF

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Publication number
WO2013174162A1
WO2013174162A1 PCT/CN2013/071521 CN2013071521W WO2013174162A1 WO 2013174162 A1 WO2013174162 A1 WO 2013174162A1 CN 2013071521 W CN2013071521 W CN 2013071521W WO 2013174162 A1 WO2013174162 A1 WO 2013174162A1
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Prior art keywords
energy storage
split
ultra
heat energy
high voltage
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PCT/CN2013/071521
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English (en)
French (fr)
Inventor
朱建新
Original Assignee
沈阳世杰电器有限公司
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Application filed by 沈阳世杰电器有限公司 filed Critical 沈阳世杰电器有限公司
Priority to EP13794592.9A priority Critical patent/EP2878897B1/en
Priority to PL13794592T priority patent/PL2878897T3/pl
Priority to NO13794592A priority patent/NO2878897T3/no
Priority to DK13794592.9T priority patent/DK2878897T3/da
Publication of WO2013174162A1 publication Critical patent/WO2013174162A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
    • F24H7/002—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release using electrical energy supply
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
    • F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
    • F24H7/0208—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using electrical energy supply
    • F24H7/0216—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using electrical energy supply the transfer fluid being air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
    • F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
    • F24H7/04—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid
    • F24H7/0408—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid using electrical energy supply
    • F24H7/0416—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid with forced circulation of the transfer fluid using electrical energy supply the transfer fluid being air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F28D20/0056—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00 using solid heat storage material
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D2220/00—Components of central heating installations excluding heat sources
    • F24D2220/10—Heat storage materials, e.g. phase change materials or static water enclosed in a space
    • 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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/14—Thermal energy storage

Definitions

  • the invention relates to an ultra-high voltage electric heat energy storage device, in particular to a direct power supply from a 10-500 kV ultra-high voltage power grid, heating through a heating wire in a thermal energy storage body, and fully utilizing low valley electricity through an energy storage module and A device that abandons wind power for heat storage and supplies heat to heat users.
  • Background technique
  • the single-body thermal energy storage body consisting of an electric heating wire and a thermal storage module layered and mixed in a rectangular size was installed on the basis of three independent insulating bases.
  • the voltage difference between the electric heating wire arranged at the bottom of each single body heat storage body and the topmost electric heating wire is less than 6 kV; if the electric heating energy storage device with the working voltage greater than 20 kV adopts the above
  • the working voltage difference between the bottommost electric heating wire and the topmost electric heating wire arranged in the single body thermal energy storage body is greater than 10 kV, and the electric heating wire exposed to the hot convection air will Due to the increase of the temperature in the heat convection air or the increase of the temperature of the heat storage module, the insulation strength of the heat storage body is less than 10 kV, and even the thermal storage energy in the body is affected by the electric discharge between the layers of the electric heating wire. jobs. Therefore, it is necessary to design a new structure to reduce the terminal voltage of the thermal energy storage body of the voltage level above 20 kV, so that the high-voltage electric energy storage device can work safely and stably to meet the needs of users. Summary of the invention
  • the present invention is directed to the above-mentioned problems of the prior art, and provides a split body in which three (n+l) pieces of electric heating wire and a heat storage module are layered and mixed in a rectangular size, which are mounted on a separate insulating base.
  • An ultra-high-voltage electric heat storage device composed of a heat storage body.
  • Each phase is provided with (n+1) split heat energy storage bodies, and n split heat energy storage bodies are connected in series to form an AC power supply loop for each phase; each split heat storage body to ground insulation voltage satisfies the same voltage level electric heating The energy requirement of the energy storage device to the ground; the voltage difference between the two ends of the electric heating wire in each body is equal to the ultra-high voltage electric energy storage The 1/(n*) of the rated working voltage of the device eliminates the electric heating filament discharge phenomenon caused by the excessive voltage across the lead wire of the internal heating wire; 3 ⁇ split thermal energy storage body The sum of the electric powers is equal to the rated power of the ultra-high-voltage electric heat storage device; the (n+1)th split thermal energy storage body is a backup thermal energy storage body for easy maintenance.
  • An ultra-high-pressure electric heat energy storage device comprises a split energy storage body part, a heat exchanger part and an outer heat insulation layer part, wherein: the split heat energy storage body is composed of an isolation layer, a safety gap, a heat storage module, and an electric Heating wire, heat dissipation convection cavity, insulated air pipe, power supply bushing, return air duct, motor, power supply lead line end, power supply lead end, outer insulation layer; split electric heat storage body is ultra-high voltage electric heat storage A component of the device, which constitutes an ultra-high-voltage electric energy storage device, requires 3 ( ⁇ +1) split heat storage bodies, which are separated by an isolation layer, and the electric heating wire lead ends of the n-part heat storage energy bodies are connected end to end.
  • the heat storage module is a heat storage unit of the split heat storage body, and stores the heat energy of the electric heating wire, or supports the skeleton of the electric heating wire, and leaves a heat dissipation hole in each layer.
  • the split heat storage body can be designed into various geometric shapes that meet the needs, except for the isolation layer, the outer insulation layer, the fan, and the motor, which are installed on the basis of the insulation strength greater than the insulation requirement of the rated input working voltage of the high-voltage electric energy storage device. Above.
  • the spacer layer is composed of a metal material, a heat storage material or an insulating material which has a stable structure in an operating temperature range.
  • the heat exchanger is a shell-and-tube gas water exchanger, and the hot air released by the split heat storage body enters the heat exchanger under the driving of the fan to release heat energy to the water in the shell, and the heat exchanger can be according to user requirements.
  • the hot water, steam, and hot air are output, and the low-temperature air after the heat exchange is completed completes the hot air circuit circulation through the return air passage.
  • the thermal energy storage body in the ultra-high voltage electric energy storage device of the invention is divided into n pieces of split heat energy storage bodies in series, which solves the problem that the voltage of the end body of the single body heat storage body is too high.
  • Its flexible configuration is suitable for various voltage levels above 10 kV, and can be used as an ultra-high voltage electric energy storage device with a working voltage of 500 kV or more.
  • the electric heating wire installed in the split heat storage body is stably operated, and the ultra-high voltage electric heat energy storage device It can work under various voltage conditions.
  • FIG. 1 is a structural diagram of a split heat storage body of an ultra-high voltage electric energy storage device according to the present invention.
  • FIG. 2 is a schematic structural view of an embodiment of a split heat energy storage body of an ultra-high voltage electric energy storage device according to the present invention.
  • FIG. 3 is a wiring diagram of the heating wire of the split heat storage energy body of the ultra-high voltage electric heat storage energy storage device of the present invention. detailed description
  • the ultra-high-pressure electric energy storage device is composed of a split energy storage body part, a heat exchanger part and an outer heat insulation layer part, and the split heat energy storage body is separated by a layer 1, a safety gap 2, and heat storage.
  • Module 3 electric heating wire 4, heat dissipation convection chamber 5, fan 6, insulated network tube 7, power supply sleeve 8, return air duct 9, electric motor 10, power supply lead end 11, power supply lead end 12 and outer thermal insulation layer 13 composition.
  • the split electric heating energy storage body is a component of the ultra-high voltage electric heat energy storage device, and 3 ( n+1 ) split heat energy storage bodies are required to constitute the ultra-high voltage electric heat energy storage device, and an isolation layer is used therebetween. Isolation, the electric heating wire lead ends of the n split heat storage bodies are connected end to end to form a series structure, an outer thermal insulation layer 13, and an exchanger 14.
  • FIG. 3 it is the wiring diagram of the heating wire in the split heat storage body, where Al, A2, A3..
  • An is the schematic diagram of the A phase power input loop string connection line;
  • An+1 is the A phase backup split body Thermal energy storage component;
  • Bl, B2, B3 . . . Bn is a schematic diagram of the B phase power input loop string connection line;
  • Bn+1 is the B phase backup split heat energy storage component;
  • Cn+1 is the C-phase backup split heat storage body component.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Central Heating Systems (AREA)

Abstract

一种超高压电热储能装置，包括分体电热储能体部分、热交换器部分和外保温层部分。分体电热储能体部分由隔离层（1）、安全间隙（2）、蓄热模块（3）、电加热丝（4）、散热对流腔（5）、风扇（6）、绝缘网管（7）、电源套管（8）、回流风道（9）、电动机（10）、电源引线首端（11）、电源引线尾端（12）和外保温层（13）组成。分体电热储能体是超高压电热储能装置的一个部件，组成超高压电热储能装置需要3（n+1）个分体电热储能体，之间用隔离层（1）隔离，n个分体电热储能体内的电加热丝（4）引出端首尾连接组成串联结构。本装置中的电热储能体分3相供电，每相n个分体电热储能体串联，解决了独体电热储能体端电压过高的问题。

Description

超高压电热储能装置
本申请要求了 2012年 5月 22日提交的、 申请号为 201210159123.0、 发明名称为
"超高压电热储能装置"的中国专利申请的优先权， 其全部内容通过引用结合在本申 请中。 技术领域
本发明涉及一种超高压电热储能装置， 尤其涉及一种由 10-500千伏超高压电网直 接供电、 通过热储能体中的电热丝进行加热、 并通过储能模块充分利用低谷电及弃风 电进行蓄热、 为热能用户供热的装置。 背景技术
以往高压电热储能装置采用 10千伏电压等级供电时， 安装在独立的三个绝缘底 座基础之上的由电加热丝与蓄热模块按矩形尺寸分层混合排列构成的独体热储能体 每相交流供电回路一个， 按星形接线方法供电。 在工作状态， 排列在每个独体热储能 体内最底层的电加热丝与最顶层的电加热丝之间电压差小于 6千伏； 若工作电压大于 20千伏的电热储能装置采用上述结构安装热储能体时，排列在独体热储能体内最底层 电加热丝与最顶层电加热丝之间的工作电压差已大于 10千伏， 暴露在热对流空气中 的电加热丝会因热对流空气中的杂质或蓄热模块温度升高使热储能体绝缘耐受强度 低于 10千伏， 甚至出现热储能体内电加热丝层间放电现象影响高压电热储能装置的 正常工作。 因此， 需要设计一种新型结构降低 20千伏以上电压等级热储能体的端电 压， 使高压电热储能装置安全稳定地工作， 满足用户需求。 发明内容
本发明针对上述现有技术存在的问题而提供一种用 3(n+l)个安装在独立的绝缘底 座基础之上的由电加热丝与蓄热模块按矩形尺寸分层混合排列的分体热储能体构成 的超高压电热储能装置。 每相设 (n+1)个分体热储能体， n个分体热储能体串连构成每 相交流供电回路； 每个分体热储能体对地绝缘电压满足同电压等级电热储能装置对地 绝缘电压要求； 每个分体热储能体内电加热丝引出线两端电压差等于超高压电热储能 装置额定工作电压的 1/ (n* )， 消除了独体热储能体因内电加热丝引出线两端电压 过高而产生的电加热丝间放电现象； 3η个分体热储能体电功率之和等于该超高压电热 储能装置额定功率； 第 （η+1 ) 个分体热储能体为备份热储能体便于检修。
本发明的技术方案如下：
一种超高压电热储能装置，包括分体储能体部分、热交换器部分、外保温层部分， 其特征在于： 分体热储能体是由隔离层、 安全间隙、 蓄热模块、 电加热丝、 散热对流 腔、 绝缘风管、 电源套管、 回流风道、 电动机、 电源引出线首端、 电源引出线尾端、 外保温层组成； 分体电热储能体是超高压电热储能装置的一个部件， 组成超高压电热 储能装置需要 3 (η+1 )个分体热储能体， 之间用隔离层隔离， η个分体热储能体内的 电加热丝引出端首尾连接组成串连结构； 蓄热模块是分体热储能体的热存储单元， 将 电加热丝的热能存储起来， 还是支撑电加热丝的骨架， 在每层还留有散热孔。
所述的分体热储能体可以设计成各种满足需要的几何体， 除隔离层、 外保温层、 风扇、 电机外均安装在绝缘强度大于高压电热储能装置额定输入工作电压绝缘要求的 基础之上。
所述的隔离层由能在工作温度范围内有稳定结构的金属材料、 蓄热材料或绝缘材 料构成。
所述的热交换器是管壳式气水交换器， 分体热储能体释放的热空气在风扇的驱动 下进入热交换器向管壳内的水释放热能， 根据用户需求热交换器可输出热水、 蒸汽、 热空气， 完成热交换后的低温空气经回流风道完成热空气回路循环。
本发明的优点如下：
本发明超高压电热储能装置中的热储能体分成 η个分体热储能体串连， 解决了独 体热储能体端电压过高的问题。 其配置灵活， 适于 10千伏以上各种电压等级， 最高 可做 500千伏以上工作电压的超高压电热储能装置。 只要每个分体热储能体内电加热 丝引出线两端电压差小于热储能体的最小击穿电压， 使安装在分体热储能体内的电热 丝稳定工作， 超高压电热储能装置就可以在各种电压条件下工作。 附图说明
图 1为本发明超高压电热储能装置分体热储能体结构图。
图 2为本发明超高压电热储能装置分体热储能体实施例结构示意图。
图 3为本发明超高压电储热储能装置分体热储能体内加热丝的接线图。 具体实施方式
如图 1所示， 超高压电热储能装置是由分体储能体部分、 热交换器部分和外保温 层部分组成， 分体热储能体是由隔离层 1、 安全间隙 2、 蓄热模块 3、 电加热丝 4、 散 热对流腔 5、 风扇 6、 绝缘网管 7、 电源套管 8、 回流风道 9、 电动机 10、 电源引出线 首端 11、 电源引出线尾端 12和外保温层 13组成。
如图 2所示， 分体电热储能体是超高压电热储能装置的一个部件， 组成超高压电 热储能装置需要 3 ( n+1 )个分体热储能体， 之间用隔离层隔离， n个分体热储能体内 的电加热丝引出端首尾连接组成串连结构， 其外保温层 13， 交换器 14。
如图 3所示， 为分体热储能体内加热丝的接线图， 其中， Al、 A2、 A3.. . An为 A 相电源输入回路串连接线示意图； An+1 为 A相备份分体热储能体组件； Bl、 B2、 B3. ..Bn为 B相电源输入回路串连接线示意图； Bn+1为 B相备份分体热储能体组件； Cl、 C2、 C3... Cn为 C相电源输入回路串连接线示意图； Cn+1为 C相备份分体热储 能体组件。

Claims

权 利 要 求
1、 一种超高压电热储能装置， 包括分体储能体部分、 热交换器部分、 外保温层 部分， 其特征在于： 分体热储能体是由隔离层、 安全间隙、 蓄热模块、 电加热丝、 散 热对流腔、绝缘风管、 电源套管、 回流风道、 电动机、 电源引线首端、 电源引线尾端、 外保温层组成； 分体电热储能体是超高压电热储能装置的一个部件， 组成超高压电热 储能装置需要 3 (n+1 )个分体热储能体， 之间用隔离层隔离， n个分体热储能体内的 电加热丝引出端首尾连接组成串连结构； 蓄热模块是分体热储能体的热存储单元， 将 电加热丝的热能存储起来， 还是支撑电加热丝的骨架， 在每层还留有散热孔。
2、 根据权利要求 1 所述的一种超高压电热储能装置， 其特征在于： 所述的分体 热储能体设计成各种满足需要的几何体， 除隔离层、 外保温层、 风扇、 电机外均安装 在绝缘强度大于超高压电热储能装置额定输入工作电压绝缘要求的基础之上。
3、 根据权利要求 1 所述的一种超高压电热储能装置， 其特征在于： 所述的隔离 层由能在工作温度范围内有稳定结构的金属材料、 蓄热材料或绝缘材料构成。
4、 根据权利要求 1 所述的一种超高压电热储能装置， 其特征在于： 所述的热交 换器是管壳式气水交换器， 分体热储能体释放的热空气在风扇的驱动下进入热交换器 向管壳内的水释放热能， 根据用户需求热交换器可输出热水、 蒸汽、 热空气， 完成热 交换后的低温空气经回流风道完成热空气回路循环。
PCT/CN2013/071521 2012-05-22 2013-02-07 超高压电热储能装置 WO2013174162A1 (zh)

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DE102013107463A1 (de) * 2013-07-15 2015-01-15 Jan Holub Wärmespeicher zur Installation in einem Gebäude
CN103743098B (zh) * 2014-01-15 2016-04-13 朱建新 高效固体电蓄热锅炉
CN103808151B (zh) * 2014-02-25 2015-07-22 朱建新 高压电阻炉蓄热装置
CN103868235B (zh) * 2014-03-12 2017-05-10 沈阳恒晟热能设备有限公司 组合式油炉
CN104728900B (zh) * 2015-04-10 2017-11-14 朱建新 分布式高压电热力网蓄热系统
CN105806117B (zh) * 2016-04-22 2017-09-29 朱建新 一种固体电蓄热装置
CN107940758A (zh) * 2017-10-19 2018-04-20 河北建筑工程学院 一种空气分级加热控温的固体电蓄热锅炉装置
CN113865401B (zh) * 2021-11-23 2023-05-09 浙江大学 储热系统及储热方法

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CN102635944A (zh) 2012-08-15
CN102635944B (zh) 2014-09-17
DK2878897T3 (da) 2018-01-29
PL2878897T3 (pl) 2018-05-30
EP2878897A4 (en) 2016-04-27

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