Process steam flow control apparatus

Abstract

The invention relates to a process steam flow control apparatus, comprising a steam dividing cylinder and a plurality of process steam supply units communicated respectively with the steam dividing cylinder; each process steam supply unit comprises a steam supply pipeline communicated with the steam dividing cylinder, first and second pneumatic valves arranged in parallel on the steam supply pipeline, and a time-control switch control box electrically connected respectively to the first and second pneumatic valve, the tail end of the steam supply pipeline is provided with a heat exchanger, and process steam in the steam dividing cylinder is delivered to the heat exchangers after flow is adjusted through the process steam supply units. Compared with the prior art, the process steam flow control apparatus has the advantages that the two pneumatic valves connected in parallel and having different diameters are provided, openings of the two pneumatic valves are intelligently controlled through the time-control switch control box according to actual process needs, and required heat is provided for process water; adjusting precision is high, adjusting flexibility is good, the apparatus has long service life and good stability and reliability.

Description

technical field [0001] The invention belongs to the technical field of process steam adjustment, and relates to a process steam flow control device. Background technique [0002] The heating process of the existing process water mostly adopts the process steam heat exchange method. The process steam exchanges heat with the process water in the heat exchanger, and the heat is transferred to the process water, so that the temperature of the process water becomes process hot water. The steam supply pipeline of process steam is often equipped with multiple identical pneumatic valves in parallel to adjust the flow rate of process steam for heat exchange with process water. When the demand for steam is small, only one pneumatic valve is activated; As the amount of steam increases, multiple pneumatic valves are opened one by one to provide more steam for process water. Due to various unstable factors often appear in the production process, the heat demand of process water often fl...

AI Technical Summary

Problems solved by technology

Due to various unstable factors often appear in the production process, the heat demand of process water often fluctuates, and the corresponding process steam flow rate will also change continuously, resulting in frequent opening and closing of some pneumatic valves, which has serious disadvantages to the life of pneumatic valves influences

In addition, when the amount of steam required is too small, the original pneumatic valve cannot accurately regulate the small flow of steam, resulting in the temperature of the process hot water being unable to meet the production needs

Images