Why is the flange form of orifice plate flowmeter necked butt weld type?

Project Overview

The reasons why the orifice plate flowmeter adopts the neck butt welding flange form mainly include the following points:

1. Enhance the strength and rigidity: the neck butt welding flange has the presence of its neck and The butt welding connection method with the pipeline has higher strength and rigidity than the flat welding flange, which allows it to withstand higher pressure and temperature conditions. It is suitable for orifice flow meters in industries such as steam, petroleum, chemical industry, etc. The industrial field faces high pressure, high temperature or application environments with large temperature differences and severe pressure fluctuations.

2. Reduce deformation: During welding, since the weld is far away from the joint surface of the flange, the neck design helps to reduce the impact of the welding heat-affected zone on the shape of the joint surface and prevent heat loss during the welding process. Deformation to ensure the flatness and sealing performance of the flange sealing surface, which is crucial to ensuring the accuracy and reliability of flowmeter measurement.

3. Stability and reliability: The overall structure of the neck butt welding flange is more stable and has no moving parts, which contributes to the stability and reliability of the flow meter under long-term use and reduces maintenance. requirements and potential leak risks.

4. Excellent sealing performance: The sealing surface of the neck butt welding flange has various forms, such as raised surface (RF), concave surface (FM), etc. The most suitable seal can be selected according to the medium characteristics and working conditions. form to ensure good sealing effect and prevent media leakage.

Therefore, due to the above advantages, the necked butt welding flange has become a commonly used connection method in the design of orifice flowmeter, ensuring that the flowmeter can still maintain good performance and long-term operation under harsh working conditions. life.