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氨是目前最广泛应用的中温制冷剂,在特殊凿井行业冻结工程中被大量使用,属有毒类介质,使用氨制冷系统时要特别注意防护。制冷系统的安全运转除了依靠过硬的安装质量外,必备的安全装置也是必不可少的。在制冷系统中须安装足够的氨压力表、安全阀、液面计、温度计等,有效且足够的安全装置能够准确监视系统运行状况,以便及时察觉制冷系统有无异常,
Ammonia is the most widely used medium temperature refrigerant, which is widely used in the freezing engineering of special sinking industry. It belongs to the toxic medium and should pay special attention to the protection when using the ammonia refrigeration system. The safe operation of the refrigeration system in addition to relying on excellent installation quality, the necessary safety devices are also essential. In the refrigeration system to be installed enough ammonia pressure gauge, safety valve, liquid level meter, thermometer, etc., effective and adequate safety devices can accurately monitor the system operating conditions, in order to detect the presence of abnormal refrigeration system,