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51. 发明授权

US5323430A Method and system for fine control of thermal power of a boiling water reactor with natural circulation 失效
标题翻译：具有自然循环的沸水反应堆热功率的精细控制方法和系统
公开(公告)号：US5323430A
公开(公告)日：1994-06-21
申请号：US2697
申请日：1993-01-11
申请人： Pieter K. Termaat , Katsuyuki Ara
发明人： Pieter K. Termaat , Katsuyuki Ara
IPC分类号： G21C17/035 , G21C17/00
CPC分类号： G21C17/035 , G21Y2002/204 , G21Y2004/40
摘要： A method and a system for fine control of the thermal power of a nuclear boiling water reactor (BWR) with natural circulation. The reactor vessel, in which the core of such a reactor is enclosed, embodies an in-vessel part of a water level gauge containing a water level sensor, such that together with the out-of-vessel part of the system, which is a signal conditioning and processing unit, the effective water level in the vessel can accurately be measured and adjusted either automatically or by hand. The in-vessel part of the system comprises a water level gauge, such as a vertical standpipe, in which the "steam-collapsed" or "effective" water level is accurately created. The effective water level is typically defined for a reactor vessel of a normally operating boiling water reactor (BWR), while partly containing liquid water, partly a mixture of steam and water, and partly just steam. A ternary-coding, hybrid digital/analog thermocouple sensor with stand-alone capability is enclosed in the water level gauge, providing ternary-coded (-1, 0, +1) as well as analog (amplitude) signaling, such that by using an appropriate signal conditioning and processing unit, the water level in the gauge, relative to a reference level, is uniquely and very accurately determined. By the beneficial use of the analog information on water level contained in the signal transition curves, in addition to the digital information of the sensor signals, continuous water level readings can be obtained over the whole of a designed water level measuring range, this being independent of reactor water temperature or pressure. This accurate continuous level-measuring system is not limited to use in boiling water reactors, nor to water as a level-forming liquid.
摘要翻译：具有自然循环的核沸水反应堆（BWR）的热力精细控制的方法和系统。将这种反应器的核心封闭在其中的反应堆容器包含含有水位传感器的水位计的容器内部分，使得与系统的不合格部分一起，其为信号调理和处理单元，可以精确地自动或手动测量和调整容器内的有效水位。系统的容器部分包括诸如垂直立管的水位计，其中精确地产生“蒸汽塌陷”或“有效”水位。通常为正常操作的沸水反应堆（BWR）的反应堆容器定义有效水位，而部分地包含液态水，部分是蒸汽和水的混合物，以及部分仅仅是蒸汽。具有独立功能的三进制编码，混合数字/模拟热电偶传感器封装在水位计中，提供三进制编码（-1,0，+1）以及模拟（振幅）信号，使得通过使用适当的信号调理和处理单元，量规中的水位相对于参考水平是唯一且非常准确地确定的。通过对信号转换曲线中包含的水位的模拟信息的有益使用，除了传感器信号的数字信息之外，可以在整个设计的水位测量范围内获得连续的水位读数，这是独立的的反应堆水温或压力。这种精确的连续液位测量系统不限于在沸水反应器中使用，也不限于用作水平形成液体的水。

52. 发明授权

US5211904A In-vessel water level monitor for boiling water reactors 失效
标题翻译：用于沸水反应堆的容器内水位监测器
公开(公告)号：US5211904A
公开(公告)日：1993-05-18
申请号：US624941
申请日：1990-12-10
申请人： Willem J. Oosterkamp
发明人： Willem J. Oosterkamp
IPC分类号： G01F23/22 , G21C17/035
CPC分类号： G21C17/035 , G01F23/22
摘要： Apparatus and method are described for providing a discrete readout of the collapsed water level within a boiling water reactor. An elongate gauge housing is mounted within the reactor vessel extending through the collapsed level from a steam environment into a boiling water environment. A serially coupled sequence of junction defining thermocouple element pairs are positioned within the gauge housing and are arranged with a heating assembly to generate an output signal which corresponds with the water level. Also located under the influence of the heating assembly are reference thermocouples, one providing a reference output corresponding with the instantaneous temperature of the boiling water environment and the other providing a reference output corresponding with the steam environment above the collapsed water level. The signals from the reference thermocouples and the serial coupled level determining thermocouple structures are then treated to define instantaneous water level.
摘要翻译：描述了用于提供沸水反应器内的塌陷水位的离散读出的装置和方法。细长的规格壳体安装在反应器容器内，从蒸汽环境延伸穿过塌陷水平进入沸水环境。连接限定热电偶元件对的顺序连接的顺序的位置定位在量规壳体内，并且与加热组件一起布置以产生对应于水位的输出信号。位于加热组件影响下的参考热电偶是一个参考热电偶，一个提供对应于沸水环境的瞬时温度的参考输出，另一个提供对应于塌陷水位以上的蒸汽环境的参考输出。然后对来自参考热电偶和串联耦合电平确定热电偶结构的信号进行处理以定义瞬时水位。

53. 发明授权

US5103674A Liquid level indicator for high pressure, hostile environment 失效
标题翻译：液位指示器用于高压，恶劣环境
公开(公告)号：US5103674A
公开(公告)日：1992-04-14
申请号：US629723
申请日：1990-12-17
申请人： John O. Outwater , Gordon F. Kohse , Michael J. Driscoll , Otto K. Harling
发明人： John O. Outwater , Gordon F. Kohse , Michael J. Driscoll , Otto K. Harling
IPC分类号： G01F23/72 , G01F23/76 , G21C17/035
CPC分类号： G21C17/035 , G01F23/72 , G01F23/76 , Y10S73/05
摘要： A method of measuring the level of a corrosive, high-pressure, high-temperature liquid in a closed container of a nuclear reactor, by providing a generally tubular structure connected to the closed container of the nuclear reactor so that the level of liquid in the tubular structure is indicative of the level of liquid in the closed container, providing a sealed buoyant float sized to move vertically up an down within the tubular structure, the float being formed of beryllium, detecting from outside the tubular structure the vertical position of said buoyant float, the position corresponding to the level of liquid in the closed container.
摘要翻译：一种通过提供连接到核反应堆的密闭容器的大致管状结构来测量核反应堆的密闭容器中的腐蚀性，高压，高温液体的水平的方法，管状结构表示密封容器中的液体水平，提供了一种密封的浮力浮子，其尺寸设计成在管状结构内垂直向上移动，浮子由铍形成，从管状结构的外部检测所述浮力的垂直位置浮动，对应于密闭容器中液体液位的位置。

54. 发明授权

US5024802A Method for steam generator water level measurement 失效
标题翻译：蒸汽发生器水位测量方法
公开(公告)号：US5024802A
公开(公告)日：1991-06-18
申请号：US600951
申请日：1990-10-22
申请人： Jagannathan S. Srinivasan
发明人： Jagannathan S. Srinivasan
IPC分类号： F22B37/38 , F22B37/46 , F22D5/30 , G01F23/14 , G21C17/035 , G21D3/08
CPC分类号： G01F23/14 , G21C17/035
摘要： A method is provided for determining and controlling steam water level in a steam generator of a nuclear plant, comprising calibrating the water level sensor in terms of velocity head and also adjusting the high level setpoint in terms of a velocity head bias. The water level differential pressure sensor is calibrated so that maximum water level is indicated as that level corresponding to the upper tap level less velocity head at maximum power plant power. The high level setpoint is calculated as corresponding to the riser level less a velocity head bias, the bias being calculated as maximum velocity head at maximum velocity minus riser head percentage of span times velocity head at maximum power.
摘要翻译：提供了一种用于确定和控制核电站蒸汽发生器中的蒸汽水位的方法，包括根据速度头校准水位传感器，并且还根据速度头偏置来调整高电平设定点。校准水位差压传感器，使得最大水位被指示为与最大发电厂功率下的上抽头级较低速度头相对应的水平。高电平设定值被计算为对应于提升板水平减去速度头偏置，偏差被计算为最大速度处的最大速度头减去最大功率时跨度乘以速度头的提升头百分比。

55. 发明授权

US4965041A Instrument for monitoring the cooling conditions in a light water reactor 失效
标题翻译：用于监测轻水反应堆中的冷却条件的仪器
公开(公告)号：US4965041A
公开(公告)日：1990-10-23
申请号：US132071
申请日：1987-12-11
申请人： Kurt Becker
发明人： Kurt Becker
IPC分类号： G01F23/24 , G21C17/035
CPC分类号： G01F23/247 , G21C17/035
摘要： The instrument for monitoring of the cooling conditions in the reactor core of a light water reactor includes a probe (2), which is introduced into the reactor vessel and comprises a casing (12) made from a low neutron absorbing and water-resistant material, a resistor (11) being hermetically enclosed in the casing (12). The resistor (11) is connected to power supply lines (5). The resistance of the resistor (11) is dependent on the temperature of the resistor. The instrument also includes sensing means providing an output signal, which is dependent on the resistance of the resistor (11), when current flows through the same.In a first mode of operation the monitor is used for detection of a reduction or loss of cooling capacity of the coolant surrounding the probe (2). A relatively high power is then supplied to the resistor, and the supplied power is adjusted to match the cooling capacity in such a way, that the heat, which is developed in the resistor as a result of the supplied power, is carried off by the coolant surrounding the probe (2). However, if the cooling capacity by any reason, for example in case of a loss of coolant accident, is reduced, the temperature in the resistor (11) will rise. Since the resistance of the resistor (11) is strongly dependent on the temperature, the resistance is changed and as a consequence the output signal derived from the sensing means is changed.

56. 发明授权

US4592230B1 失效
公开(公告)号：US4592230B1
公开(公告)日：1990-10-16
申请号：US51460083
申请日：1983-07-18
申请人： SCANDPOWER INC
发明人： JAMES P WARING , ROBERT D SMITH
IPC分类号： G01F23/22 , G21C17/035 , G01F23/00
CPC分类号： G01F23/22 , G21C17/035

57. 发明授权

US4449403A Guide tube inserted liquid level sensor 失效
标题翻译：导管插入液位传感器
公开(公告)号：US4449403A
公开(公告)日：1984-05-22
申请号：US278336
申请日：1981-06-29
申请人： Malcolm M. McQueen
发明人： Malcolm M. McQueen
IPC分类号： G01F1/68 , G01F23/24 , G21C17/035 , G01F23/22
CPC分类号： G01F23/247 , G01F1/68 , G01F23/246 , G01F23/248 , G21C17/035
摘要： This invention relates to a system for sensing the liquid level and coolant properties in a fluid containing vessel by insertion into the vessel of a plurality of matched spaced sensor probes comprising a first and second temperature sensor, the first sensor essentially measuring the media temperature, a heater, an arrangement for applying differential heat between the sensors, the heater and second sensors being thermally connected, all positioned to permit the sensing at the cooling quality of the media present, the heater located directly adjacent the second sensor and adjusted so that when the cooling quality of the normal fluid is sensed the heat generated by the heater and passing into the fluid is virtually completely dissipated and only a small finite differential temperature exists between the sensors and thereby indicates a sub-cooled liquid is present. When fluid is absent and vapor is present a higher and distinguishable differential temperature will exist and the value of the temperature differential is related to the absence of fluid and the cooling properties of the vapor phase that is present is being sensed. In the presence of saturated or boiling liquid there will be virtually no differential temperature and the small differential temperature present in sub-cooled liquid disappears as saturation is approached.
摘要翻译：本发明涉及一种用于通过将包含第一和第二温度传感器的多个匹配间隔的传感器探头插入容器中来检测含液体容器中的液位和冷却剂性质的系统，第一传感器基本上测量介质温度，加热器，用于在传感器之间施加差热的装置，加热器和第二传感器被热连接，全部定位成允许感测存在的介质的冷却质量，加热器直接邻近第二传感器并被调节，使得当检测到正常流体的冷却质量，由加热器产生的并且流入流体的热几乎完全消散，并且在传感器之间仅存在小的有限差分温度，从而表示存在低温液体。当流体不存在并且蒸气存在时，将存在较高且可区分的差温，并且温差的值与不存在流体相关，并且感测到存在的气相的冷却特性。在存在饱和或沸腾的液体的情况下，基本上不存在差温，并且当接近饱和时，过冷却液中存在的小差温度消失。

58. 发明授权

US3214974A Remote acoustical sensor 失效
标题翻译：远程声学传感器
公开(公告)号：US3214974A
公开(公告)日：1965-11-02
申请号：US33163463
申请日：1963-12-18
申请人： LAWRENCE ALTMAN , DONALD GERTZ
发明人： LAWRENCE ALTMAN , DONALD GERTZ
IPC分类号： G01F23/296 , G21C17/035
CPC分类号： G21C17/035 , G01F23/296 , Y10S367/908

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