What are the main functions of the mechanical seal support system in API682 standard?

What are the main functions of the mechanical seal support system in API682 standard?

Before discussing practice, let's take a look at the functionality of the sealing system. The system is designed with specific machine seals and a set of process conditions. Generally speaking, the system supplies steam or liquid to the machine seal to adjust the sealing working environment and protect rotating equipment from damage.

This system has four basic functions:

Runhua protruding surface

Manipulate the pressure and temperature in the sealing chamber and sealing components

Seals for cleaning pollution and/or residue accumulation

Prevent leakage of system process fluids into the air

Reduce hidden leakage points

In all API682 Fourth Edition, various recommended standards are proposed to reduce the total number of connections in sealed terminal software. The system does not recommend using screw systems, whether selecting welded pipes or jacketed pipes. In nitrogen oxide pumping applications, each connection is referred to as a hidden leak point and potential reliability risk. Leakage of sealing terminal software near the pump may result in asset loss, increased shutdown time, environmental issues, and safety risks.

In the past, many sealed terminal software used nominal pipes for construction. By using tube bends and standardized use of tube adapters, the total number of connections can be reduced. Generally speaking, only the seal and sealing system need to be connected. Due to the quenching of the sleeve, bending the sleeve will harden the metal, thereby increasing the strength at the bend. Innovative connection methods, such as flange adapters and extended external thread connectors. Further avoiding the requirement for multiple joints and reducing the total number of connections between the sealing components and screw ports on the sealing tank. When analyzing the MRO costs of pumps, seals, and terminal software, the application of card sleeves will bring further financial benefits. During the maintenance operation, the "pipeline" around the pump needs to be rebuilt, and the application sleeve does not require high cost on-site welding, which can be quickly installed and reduce shutdown time.