摘要:
The invention relates to a sampling system (1) for taking a sample from the atmosphere in a reactor containment housing (2) with a sampling line (8), opening out in the reactor containment housing (2), connected to a vacuum system (12) and an analytical system (14), permitting the preparation of a sample suitable for the determination of a particularly reliable and precise measured value for the gas components of the containment atmosphere. According to the invention, the sampling line (8) is hence provided with an initial gas throttling device (30), connected to the atmosphere in the reactor containment housing (2). The sample can thus be transferred to the analytical system (14) from the reactor containment in the overheated condition.
摘要:
The invention relates to a device (1) for recombining hydrogen and oxygen in a gaseous mixture, especially for a nuclear plant. The gaseous mixture can be fed to a heating chamber (30) through a feed duct (4) into which a conveyor blower (6) is connected. The aim of the invention is to provide a particularly simple means of reliably reducing the hydrogen present in the gaseous mixture, even in different operating states. To this end, a control unit (80) associated with the conveyor blower (6) is provided to adjust the conveying capacity of the conveyor blower in accordance with the hydrogen content of the gaseous mixture.
摘要:
The invention relates to a recombiner element (4) comprising a plurality of catalyst elements (8) that are arranged in a common housing (6) and that trigger a recombination reaction with oxygen when hydrogen is carried along in a feed gas flow, the housing (6) surrounding the catalyst elements (8), which are arranged therein, in a funnel-type way in such a manner that the heat released by the recombination reaction supports the gas flow inside the housing (6) by a convection effect, which recombiner element safeguards a reliable removal of the hydrogen from the gas mixture with an especially high degree of operational safety even under comparatively extreme conditions or scenarios of said type. According to the invention, at least one of the catalyst elements (8) arranged inside the housing (6) has a predetermined ignition zone (20) in which a surface temperature of more than 560°C is produced in the convective operation at ambient conditions of approximately 1 bar and 100°C at a hydrogen concentration in the feed gas flow of more than 5% by volume.