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1.发明授权Leak detection method for gas, steam or the like based, in part, on the measurement of wind direction and velocity 失效基于部分地测量风向和速度的气体，蒸汽等的泄漏检测方法
公开(公告)号：US5390530A
公开(公告)日：1995-02-21
申请号：US131611
申请日：1993-10-05
摘要： A leak detection system for gas, steam or the like in a plant yard includes a plurality of sampling modules and wind direction and velocity indicators both arranged around apparatus or equipment in the plant yard. Samples of the atmosphere around the apparatus or equipment are drawn through the sampling modules, and the concentration of a substance leaked into the atmosphere is detected by a sensor module. At the same time, the direction and velocity of wind in the plant yard are determined. Leakage of gas, steam or the like in the plant yard can be detected based on the concentrations and wind direction and velocity. Methods for the determination of the direction and/or velocity of wind, wind direction and velocity indicators, and anemoscopes are also described.
摘要翻译： 用于厂房内的气体，蒸汽等的泄漏检测系统包括多个采样模块和风向和速度指示器，两者均布置在厂房内的设备或设备周围。 设备或设备周围的气氛样品通过取样模块抽出，泄漏到大气中的物质的浓度由传感器模块检测。 同时，确定了厂房风向的方向和速度。 可以根据浓度，风向和速度来检测厂房内气体，蒸汽等的泄漏情况。 还描述了确定风向，风向和速度指示器以及风向器的方向和/或速度的方法。
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2.发明授权Leak detection system for gas, steam or the like that involves multi-point sampling 失效用于气体，蒸汽等的泄漏检测系统涉及多点采样
公开(公告)号：US5297421A
公开(公告)日：1994-03-29
申请号：US845185
申请日：1992-03-03
摘要： A leak detection system for gas, steam or the like in a plant yard includes a plurality of sampling modules and wind direction and velocity indicators both arranged around apparatus or equipment in the plant yard. Samples of the atmosphere around the apparatus or equipment are drawn through the sampling modules, and the concentration of a substance leaked into the atmosphere is detected by a sensor module. At the same time, the direction and velocity of wind in the plant yard are determined. Leakage of gas, steam or the like in the plant yard can be detected based on the concentrations and wind direction and velocity. Methods for the determination of the direction and/or velocity of wind, wind direction and velocity indicators, and anemoscopes are also described.
摘要翻译： 用于厂房内的气体，蒸汽等的泄漏检测系统包括多个采样模块和风向和速度指示器，两者均布置在厂房内的设备或设备周围。 设备或设备周围的气氛样品通过取样模块抽出，泄漏到大气中的物质的浓度由传感器模块检测。 同时，确定了厂房风向的方向和速度。 可以根据浓度，风向和速度来检测厂房内气体，蒸汽等的泄漏情况。 还描述了确定风向，风向和速度指示器以及风向器的方向和/或速度的方法。
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公开(公告)号：US4797265A
公开(公告)日：1989-01-10
申请号：US25159
申请日：1987-03-12
申请人： Tadashi Inoue , Akira Ohkoba , Kunio Sakashita , Akira Utsunomiya , Takeki Shinozaki , Minoru Ieda
发明人： Tadashi Inoue , Akira Ohkoba , Kunio Sakashita , Akira Utsunomiya , Takeki Shinozaki , Minoru Ieda
IPC分类号： C01B25/226 , C01B25/228 , C01B25/229 , C01F11/46 , C04B11/26 , C01B25/16 , C01F1/00
CPC分类号： C01F11/46 , C01B25/2295 , C04B11/26
摘要： A process for the production of highly concentrated phosphoric acid, comprises improvements in digesting phosphate rock with a mixed acid consisting essentially of sulfuric acid and phosphoric acid to obtain a slurry comprising phosphoric acid and hemihydrate (CaSO.sub.4.1/2H.sub.2 O), then filtering the slurry, taking out highly concentrated phosphoric acid as product acid and subsequently hydrating the hemihydrate to obtain gypsum (dihydrate: CaSO.sub.4.2H.sub.2 O).
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