公开(公告)号：US09612173B2

公开(公告)日：2017-04-04

申请号：US14532456

申请日：2014-11-04

申请人： HITACHI, LTD.

发明人： Ryo Kuwana ,  Atsushi Fushimi ,  Daisuke Shinma ,  Hideki Hanami ,  Isao Hara

IPC分类号： G01L7/00 ,  G01L13/02 ,  G01L7/08 ,  G01L19/06

CPC分类号： G01L7/08 ,  G01L13/026 ,  G01L19/06

摘要： In a pressure and pressure difference transmitter that seals a sealing liquid for transmitting the pressure inside a pressure leading passage, the pressure and pressure difference transmitter forming a space between a diaphragm and a main body side wall surface, including the pressure leading passage connected to the main body side wall surface, and transmitting the pressure received by the diaphragm to a sensor through the sealing liquid sealed in the space and the pressure leading passage, a hydrogen occluding material for occluding hydrogen atoms of the sealing liquid is disposed at least in the sealing liquid, the main body side wall surface, or a part of a portion from the main body side wall surface to the sensor, with the hydrogen occluding material being formed with an uneven shape on the surface or being attached with a granular hydrogen occluding material.

公开(公告)号：US09939339B2

公开(公告)日：2018-04-10

申请号：US15075485

申请日：2016-03-21

申请人： HITACHI, LTD.

发明人： Ryo Kuwana ,  Daisuke Shinma ,  Atsushi Fushimi ,  Hideki Hanami ,  Isao Hara

IPC分类号： G01L13/02 ,  G01L7/08 ,  G01L19/06

CPC分类号： G01L7/08 ,  G01L13/025 ,  G01L19/0645

摘要： Provided is a pressure transmitter device including: a pressure receiving diaphragm in contact with a measuring fluid; a fill fluid, in contact with an opposite side of the pressure receiving diaphragm to the other side in contact with the measuring fluid, for transferring a pressure received by the pressure receiving diaphragm from the measuring fluid to a sensor disposed at a position apart from the pressure receiving diaphragm; a hydraulic path filled with the fill fluid and connecting the pressure receiving diaphragm and the sensor; and an output circuit for measuring and outputting an absolute pressure of the measuring fluid or a differential pressure between measuring fluids based on the pressure received by the sensor, where a hydrocarbon absorbing material for absorbing hydrocarbon and a hydrogen occlusion material for occluding hydrogen are provided inside the hydraulic path.

公开(公告)号：US20150228365A1

公开(公告)日：2015-08-13

申请号：US14619261

申请日：2015-02-11

申请人： Hitachi, Ltd.

发明人： Setsuo Arita ,  Ryo Kuwana ,  Atsushi Baba ,  Atsushi Fushimi ,  Daisuke Shinma ,  Hideki Hanami ,  Isao Hara ,  Takashi Ito

IPC分类号： G21D3/08 ,  G21C17/00

CPC分类号： G21D3/08 ,  G01L19/0627 ,  G21C17/00

摘要： The present invention provides instrumentation equipment for a nuclear power plant in which the formation of bubbles in an impulse line can be surely inhibited and thereby reliability and maintainability are improved for a long period of time. Instrumentation equipment for a nuclear power plant including: a tubular impulse line provided on a site to measure a fluid to be measured in a primary system of a nuclear power plant; a sealed liquid filled within the impulse line; a pressure-sensing diaphragm provided in a state of closing one opening of the impulse line to receive a pressure of the fluid to be measured; a pressure sensor provided on another opening of the impulse line in a state of being exposed to the sealed liquid; and a hydrogen storage material provided within the impulse line.

摘要翻译： 本发明提供了一种用于核动力装置的仪表设备，其中可以可靠地抑制脉冲管中的气泡的形成，从而长期地提高可靠性和可维护性。 一种用于核电站的仪表设备，包括：在现场测量在核电站的主系统中要测量的流体的管状脉冲线; 填充在脉冲管线内的密封液体; 压力感测隔膜，设置在关闭所述脉冲管路的一个开口以接收被测量流体的压力的状态; 在暴露于密封液体的状态下，设置在脉冲管路的另一个开口上的压力传感器; 以及设置在脉冲管线内的储氢材料。

公开(公告)号：US09140620B2

公开(公告)日：2015-09-22

申请号：US14024811

申请日：2013-09-12

申请人： HITACHI, LTD.

发明人： Ryo Kuwana ,  Atsushi Baba ,  Atsushi Fushimi ,  Daisuke Shinma ,  Hideki Hanami ,  Isao Hara ,  Takashi Ito

IPC分类号： G01L7/08 ,  G01L13/02 ,  G01L19/06

CPC分类号： G01L13/025 ,  G01L7/08 ,  G01L13/026 ,  G01L19/0636 ,  G01L19/0645

摘要： Hydrogen which has entered into a pressure/differential pressure transmitter from external or internally generated hydrogen and hydrocarbons are converted to air bubbles within pressure guide paths. As a result, the indicated value drifts and an accurate numerical value is not output. A pressure/differential pressure transmitter includes a space formed between a diaphragm and a main body side wall face, pressure guide paths connected to the main body side wall face, a sealed liquid sealed in the space and the pressure guide paths to transmit a pressure received by the diaphragm to a sensor, and a hydrogen absorption material provided at least in the sealed liquid, on the main body side wall face, or in a part of a path between the main body side wall face and the sensor to absorb hydrogen atoms in the sealed liquid.

摘要翻译： 从外部或内部产生的氢气和烃进入压力/差压变送器的氢气被转化为压力引导通道内的气泡。 结果，指示值漂移并且不输出精确的数值。 压力/压差变送器包括在隔膜和主体侧壁面之间形成的空间，连接到主体侧壁面的压力引导路径，密封在该空间中的密封液体和压力引导路径，以传递接收到的压力 通过隔膜到传感器，以及至少设置在密封液体中的主体侧壁面上或在主体侧壁面和传感器之间的路径的一部分中的吸氢材料，以吸收氢原子 密封液体。