HTR-10高温气冷堆一回路电气贯穿件——清华大学核能技术设计研究院
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设备焊接短管Equipment Welding Short Pipe
承压管Pressure Pipe
可伐件Kovar Piece 陶瓷件Ceramic Piece 导体Conductor
结构——气体泄漏率监测 Structure – Monitoring of Gas Leakage Rate
leakage rate through changes in helium pressure. ρ Pa m3 / s (considering the influence of
工作电压Operating Voltage，V
额定电流Rated Current，A 气体泄漏率 Pa· m3/s Leakage
380AC
400
200AC/48DC
3.5 <1×10-4 20
rate， <1×10-4 1
芯数Number of Cores
密封方式Sealing Method
陶瓷组件封焊Closure welding by using ceramic components
承压管能承受外压——一回路侧的压力；测量泄漏率而充气时的内
压。 Pressure pipe can withstand the external pressure - side pressure
of one circuit; internal pressure while in aeration to measure
引言 Foreword
高温气冷堆的转动设备采用覆盖式结构，避免了复杂的穿轴动密封 问题，增加了一回路边界电气贯穿件的难度; The HTR adopts rotation devices of overlay structure to avoid the complex seal problem, which increases the difficulty of primary circuit EPA. 电气贯穿件要求能随时监测气体泄漏率。 EPA is required to monitor the gas leakage rate at all times.
4 <1×10-4 24
Leakage <1×10-4 7
芯数Number of Cores
密封方式Sealing Method
陶瓷组件封焊Closure 陶瓷组件封焊Closure welding by using the welding by using the ceramic ceramic components components
测泄管末端装压力表和充气阀；
Install pressure gauge and inflation valve on the end of measured vent tube
密闭腔体内充稍低于工作压力的氦气，氦气压力的变化可得出气体泄漏率ρ, Pa•m3/s（考虑温度的影 响）。 Fill helium gas into the closed cavity to be slightly lower than the working pressure, ang get the gas
结构——压力边界 Structure - Pressure Boundary
电气贯穿件的承压管上有一个突缘，安装时突缘焊接在设备焊接短 管上； A flange is on the pressure tube of EPA, and is to be welded into welding equipment short pipe
型式试验实验内容 Type test; 型式试验方法 Test method; 产品试验 Product test
5 结论 Conclusion
引言 Foreword
电气贯穿件是防止反应堆的放射性气体向环境泄漏而采取的必要 而有效的方法之一； EPA is one of the necessary and effective methods to contain any radiation; 电气贯穿件既提供了电气性能的贯穿，又保持了边界的完整和防 止泄漏； EPA does not only provide electrical feedt源自文库rough, but also maintain the integrity of the pressure boundery and prevent leakage; 安全壳的电气贯穿件可看成核电站安全防护的最后屏障； EPA on the containment shell is regarded as the last protection of the nuclear power plant safety;
结构示意图Structure Schematic Diagram
结构——电气贯穿 Structure – Electrical Penetration
要求导体电阻小，用无氧铜制造； Require small resistance of the conductor, using oxygen-free copper for manufacture
HTR-10电气贯穿件技术特点 HTR-10 EPA Technical Features 技术参数Technical Index（1）
型号 Type 低压动力型Low-voltage power type 用处Application 主氦风机电机Main helium blower motor 工 作 温 度 Operating Temperature ， 100~150 ℃ 工作压力Operating Pressure， 3.0 Mpa 设计压力Design Pressure，MPa 3.5 仪表控制型Instrument control type 主氦风机仪表控制Main helium blower motor instrument control 100~150 3.0 3.5
电气贯穿件内外电缆接线：大电流用接线鼻子，小电流用插接。 Internal and External cable connection of EPA: use butt splices for high current, and use plug in connector for low current
HTR-10 高温气冷堆一回路电气贯穿件 Primary circuit EPA of HTR-10
清华大学核能技术设计研究院 INET, Tsinghua University 周惠忠 Professor ZHOU Huizhong 15th January, 2013
内容 Content
0 引言 Foreword 1 电气贯穿件的功能 Functions of EPA 2 HTR-10电气贯穿件技术特点 Technical Features of HTR-10 EPA
两套带密封结构的端板与承压管间组成密闭腔体； A closed cavity formed between two sets of end plates of sealing structure and pressure pipe. 在密闭腔体上焊出一根测泄管； Weld out a measured vent tube from a closed cavity
导体间，导体与外壳间要绝缘； Insulation between conductors, and between conductor and containment.
导体与端板的绝缘，密封是电气贯穿件的“技术核心”； Insulation between the conductor and the end plates; and sealing is the the “ Technical Core“ of EPA
HTR-10电气贯穿件技术特点 HTR-10 EPA Technical Features
使用环境 Application Environment 一侧是高温高压高辐射的纯氦气；另一侧是高温空气； One side is pure helium with high temperature, high radiation and pressure, while the other side is high temperature air 密封介质为氦气； The sealant is helium 介质压力为3MPa； The media pressure is 3MPa. 结构紧凑：压力壳钢制，壳薄；贯穿件短、直径较小。 Compact structure: the containment is made of steel, with thin shell; and the EPA is short with small diameter.
使用环境 Environmental Conditions; 技术参数 Technical Parameters
3 结构 Structure
总体结构 overall structure; 密封结构 sealing structure; 气体泄漏监测 leakage detection
4 试验 Test
电气贯穿件的功能 Functions of EPA
压力边界内、外侧间的电气连通； Electrical connection between the inside and outside of the pressure boundary 满足电流、电压、电阻阻抗及屏蔽等电气要求； Meet the electrical requirements of the current, voltage, resistance impedance and shield 各路导体之间及导体对地的绝缘； Insulation between the conductors and between the conductor and ground 压力边界的承压能力； Pressure resistance of the pressure boundary 气体泄漏率的限制； Gas leak rate limit 不加其它装置即能经常地监测气体泄漏率； Be able to regularly monitor the gas leakage rate without adding other devices. 对事故的应对。 Respond to accident.
钢管聚砜旋 锻 密封Sealed by steel pipe the polysulfone swaging
HTR-10电气贯穿件技术特点 HTR-10 EPA Technical Features 技术参数Technical Index（2）
型号 Type 用处Application 低压动力型Low-voltage 仪表控制型Instrumental Control Type power model 燃料球传动Fuel balls 控制棒、吸收球 传 动 Transmission transmission control rods and absorbtion balls Operating 100~150 100~150 3.0 3.5 3.0 3.5 of
leakage rate
钢管聚砜旋锻密封结构 Sealing Structure of Steel Tube Swaging Polysulfone
陶瓷组件封焊密封结构
Seal welded sealing Structure of Ceramic Components
陶瓷贯穿件的焊接安装 Welding Installation of Ceramic Penetration
工 作 温 度 Temperature，℃ 工作压力Operating Pressure ，Mpa 设计压力Design Pressure， Mpa 工作电压Operating Voltage ，V 额定电流Rated Current，A 气体泄漏率Gas Rate，Pa· m3/s
380AC
10
380AC/48DC
承压管Pressure Pipe
可伐件Kovar Piece 陶瓷件Ceramic Piece 导体Conductor
结构——气体泄漏率监测 Structure – Monitoring of Gas Leakage Rate
leakage rate through changes in helium pressure. ρ Pa m3 / s (considering the influence of
工作电压Operating Voltage，V
额定电流Rated Current，A 气体泄漏率 Pa· m3/s Leakage
380AC
400
200AC/48DC
3.5 <1×10-4 20
rate， <1×10-4 1
芯数Number of Cores
密封方式Sealing Method
陶瓷组件封焊Closure welding by using ceramic components
承压管能承受外压——一回路侧的压力；测量泄漏率而充气时的内
压。 Pressure pipe can withstand the external pressure - side pressure
of one circuit; internal pressure while in aeration to measure
引言 Foreword
高温气冷堆的转动设备采用覆盖式结构，避免了复杂的穿轴动密封 问题，增加了一回路边界电气贯穿件的难度; The HTR adopts rotation devices of overlay structure to avoid the complex seal problem, which increases the difficulty of primary circuit EPA. 电气贯穿件要求能随时监测气体泄漏率。 EPA is required to monitor the gas leakage rate at all times.
4 <1×10-4 24
Leakage <1×10-4 7
芯数Number of Cores
密封方式Sealing Method
陶瓷组件封焊Closure 陶瓷组件封焊Closure welding by using the welding by using the ceramic ceramic components components
测泄管末端装压力表和充气阀；
Install pressure gauge and inflation valve on the end of measured vent tube
密闭腔体内充稍低于工作压力的氦气，氦气压力的变化可得出气体泄漏率ρ, Pa•m3/s（考虑温度的影 响）。 Fill helium gas into the closed cavity to be slightly lower than the working pressure, ang get the gas
结构——压力边界 Structure - Pressure Boundary
电气贯穿件的承压管上有一个突缘，安装时突缘焊接在设备焊接短 管上； A flange is on the pressure tube of EPA, and is to be welded into welding equipment short pipe
型式试验实验内容 Type test; 型式试验方法 Test method; 产品试验 Product test
5 结论 Conclusion
引言 Foreword
电气贯穿件是防止反应堆的放射性气体向环境泄漏而采取的必要 而有效的方法之一； EPA is one of the necessary and effective methods to contain any radiation; 电气贯穿件既提供了电气性能的贯穿，又保持了边界的完整和防 止泄漏； EPA does not only provide electrical feedt源自文库rough, but also maintain the integrity of the pressure boundery and prevent leakage; 安全壳的电气贯穿件可看成核电站安全防护的最后屏障； EPA on the containment shell is regarded as the last protection of the nuclear power plant safety;
结构示意图Structure Schematic Diagram
结构——电气贯穿 Structure – Electrical Penetration
要求导体电阻小，用无氧铜制造； Require small resistance of the conductor, using oxygen-free copper for manufacture
HTR-10电气贯穿件技术特点 HTR-10 EPA Technical Features 技术参数Technical Index（1）
型号 Type 低压动力型Low-voltage power type 用处Application 主氦风机电机Main helium blower motor 工 作 温 度 Operating Temperature ， 100~150 ℃ 工作压力Operating Pressure， 3.0 Mpa 设计压力Design Pressure，MPa 3.5 仪表控制型Instrument control type 主氦风机仪表控制Main helium blower motor instrument control 100~150 3.0 3.5
电气贯穿件内外电缆接线：大电流用接线鼻子，小电流用插接。 Internal and External cable connection of EPA: use butt splices for high current, and use plug in connector for low current
HTR-10 高温气冷堆一回路电气贯穿件 Primary circuit EPA of HTR-10
清华大学核能技术设计研究院 INET, Tsinghua University 周惠忠 Professor ZHOU Huizhong 15th January, 2013
内容 Content
0 引言 Foreword 1 电气贯穿件的功能 Functions of EPA 2 HTR-10电气贯穿件技术特点 Technical Features of HTR-10 EPA
两套带密封结构的端板与承压管间组成密闭腔体； A closed cavity formed between two sets of end plates of sealing structure and pressure pipe. 在密闭腔体上焊出一根测泄管； Weld out a measured vent tube from a closed cavity
导体间，导体与外壳间要绝缘； Insulation between conductors, and between conductor and containment.
导体与端板的绝缘，密封是电气贯穿件的“技术核心”； Insulation between the conductor and the end plates; and sealing is the the “ Technical Core“ of EPA
HTR-10电气贯穿件技术特点 HTR-10 EPA Technical Features
使用环境 Application Environment 一侧是高温高压高辐射的纯氦气；另一侧是高温空气； One side is pure helium with high temperature, high radiation and pressure, while the other side is high temperature air 密封介质为氦气； The sealant is helium 介质压力为3MPa； The media pressure is 3MPa. 结构紧凑：压力壳钢制，壳薄；贯穿件短、直径较小。 Compact structure: the containment is made of steel, with thin shell; and the EPA is short with small diameter.
使用环境 Environmental Conditions; 技术参数 Technical Parameters
3 结构 Structure
总体结构 overall structure; 密封结构 sealing structure; 气体泄漏监测 leakage detection
4 试验 Test
电气贯穿件的功能 Functions of EPA
压力边界内、外侧间的电气连通； Electrical connection between the inside and outside of the pressure boundary 满足电流、电压、电阻阻抗及屏蔽等电气要求； Meet the electrical requirements of the current, voltage, resistance impedance and shield 各路导体之间及导体对地的绝缘； Insulation between the conductors and between the conductor and ground 压力边界的承压能力； Pressure resistance of the pressure boundary 气体泄漏率的限制； Gas leak rate limit 不加其它装置即能经常地监测气体泄漏率； Be able to regularly monitor the gas leakage rate without adding other devices. 对事故的应对。 Respond to accident.
钢管聚砜旋 锻 密封Sealed by steel pipe the polysulfone swaging
HTR-10电气贯穿件技术特点 HTR-10 EPA Technical Features 技术参数Technical Index（2）
型号 Type 用处Application 低压动力型Low-voltage 仪表控制型Instrumental Control Type power model 燃料球传动Fuel balls 控制棒、吸收球 传 动 Transmission transmission control rods and absorbtion balls Operating 100~150 100~150 3.0 3.5 3.0 3.5 of
leakage rate
钢管聚砜旋锻密封结构 Sealing Structure of Steel Tube Swaging Polysulfone
陶瓷组件封焊密封结构
Seal welded sealing Structure of Ceramic Components
陶瓷贯穿件的焊接安装 Welding Installation of Ceramic Penetration
工 作 温 度 Temperature，℃ 工作压力Operating Pressure ，Mpa 设计压力Design Pressure， Mpa 工作电压Operating Voltage ，V 额定电流Rated Current，A 气体泄漏率Gas Rate，Pa· m3/s
380AC
10
380AC/48DC