Q：What is a steam sub-cylinder?

A：
The sub-cylinder is the main supporting equipment of the boiler. It is used to distribute the steam generated during the operation of the steam boiler to various pipelines. The sub-cylinder is a pressure-bearing equipment and is a pressure vessel. The main function of the sub-cylinder is to distribute steam, so there are multiple valve seats on the sub-cylinder connected to the boiler main steam valve and steam distribution valve, so that the steam in the sub-cylinder can be distributed to various needs.

The main pressure components of the branch cylinder are: distribution steam valve seat, main steam valve seat, safety valve seat, drain valve seat, pressure gauge seat, and temperature gauge seat;
The boiler is divided into cylinder head, shell and flange materials: Q235-A/B, 20g, 16MnR;
The working pressure of the boiler cylinders is 1-2.5MPa;
Boiler cylinder operating temperature: 0~400°C
Working medium: steam, hot and cold water.

Steam cylinder features:
(1) Standardized production. Regardless of the size of the cylinder product, its circumferential seams adopt automatic welding technology, making the product beautiful, safe and reliable.
(2) Complete varieties and wide application range. The working pressure can reach up to 16Mpa.
(3) Each sub-cylinder is manufactured, inspected and accepted in accordance with national standards. When the sub-cylinder leaves the factory, it will be inspected by the local Quality and Technical Supervision Bureau after passing the factory inspection. Cylinder inspection certificate drawings, etc.

Steam sub-cylinder technical requirements:
When the medium is steam, it should be designed in accordance with the “Pressure Vessel Regulations” and the cylinder diameter, material and thickness should be determined. The general principle is: the cylinder diameter should be 2-2.5 times the diameter of the largest connecting pipe. Generally, it can be based on the fluid flow rate in the cylinder. It is confirmed that the material is 10-20# seamless pipe, Q235B, 20g, 16MnR plate rolling, and the number of pipes is determined by the engineering design. When the medium is steam, it should be designed in accordance with the “Pressure Vessel Regulations” and the cylinder diameter, material and thickness should be determined. The general principle is: the cylinder diameter should be 2-2.5 times the diameter of the largest connecting pipe. Generally, it can be based on the fluid flow rate in the cylinder. It is confirmed that the material is 10-20# seamless pipe, Q235B, 20g.16MnR plate rolling, and the number of pipes is determined by the engineering design.