Safety standpipe for the protection of distant-heating systems against dynamic pressure loads

摘要

The invention relates to a safety standpipe for the protection of distant-heating systems against dynamic pressure loads and is usable in all hydraulic networks in which, for example owing to pump failure, dynamic pressure changes occur in the hydraulic system, which lead to inadmissible pressure increases. The aim of the invention consists in proposing a solution, complying with safety regulations, for damping dynamic hydraulic processes which is simple in design and has a high degree of reliability and low technical outlay. The object of the invention is to propose a safety standpipe which, even before the maximum pressure limit is reached, allows defined feeding of the heating medium, operates without feeding to the environment and has a characteristic which is different in the pressure drop than in the pressure rise. According to the invention, the object is achieved in that the standpipe is interrupted and water can escape into a vessel surrounding the standpipe at the points of interruption.