How should measuring instruments be installed on the main pipes of public utility systems?
Thread Content
How should measuring instruments be installed on the main pipes of utility systems (such as auxiliary systems for circulating water, steam, nitrogen, etc.) after they enter the plant area? Are temperature, pressure, and flow rate set at the inlet of the steam pipeline network, while pressure and flow rate are set for the other pipelines? Are there any relevant regulatory requirements that can be referred to?
When installing measuring instruments on the main pipes of a utility system, instruments are generally selected based on the specific requirements and functional specifications of the system. For steam systems, temperature, pressure, and flow meters are usually installed at the inlet of the piping network. This is because the quality and efficiency of steam depend to a large extent on these parameters. Temperature and pressure instruments can help monitor and control the condition of steam, ensuring the safe and efficient operation of the system ； Flow meters can help calculate the steam consumption of the entire system. For other systems such as circulating water and nitrogen, pressure and flow meters are usually installed. Pressure instruments are used to monitor the operating pressure in a system, preventing equipment damage or unstable operation caused by pressures that are too low or too high ； Flow meters are used to monitor and control the flow rate of fluids, ensuring the proper operation of the system. As for the corresponding regulatory requirements, one can usually refer to various ** or industry standards, such as GB (** standards), ISO (international standards), etc. For example, the ISO 5167 standard provides guidance on methods and techniques for flow measurement, while API (American Petroleum Institute) standards offer numerous specifications regarding pipes and valves. Furthermore, specific companies or projects may also have their own standards and procedures that need to be followed. It is recommended to consult relevant industry standards or professionals to ensure that the measuring instruments are set up accurately and appropriately. .
For the rest, it is unclear. For instrument air, in accordance with HG/T 20510-2014 Design Code for Instrument Air Supply, sections 4.3.1/4.3.2 state that a pressure device should be installed in the instrument air supply network (an alarm should be triggered when the pressure is low); an online dew point meter may also be used