MUMBAI, India, June 22 -- Intellectual Property India has published a patent application (202631065531 A) filed by Vaibhav Grover on May 21, 2026, for Implementing Secondary Air Flow Purging Through Automation (power Plant).
Inventors include Pratap Nath; Nezamuddin Khan; Ranjan Singh; Rajeet Kumar Verma; Hari Deepu; Eshan Ahamed; and Niwas Choudhary.
The application for the patent was published on June 12, 2026, under issue no. 24/2026.
Abstract: The present invention relates to an automated purging system for impulse lines of secondary air flow transmitters utilized in the combustion control systems of thermal power plants. More particularly, the invention addresses the problem of particulate matter ingress into impulse lines, which causes measurement inaccuracies, increases maintenance frequency, and introduces occupational hazards during manual cleaning procedures. The system comprises: • At least one purge air supply line connected to the transmitter impulse line through a corrosion-resistant conduit, preferably a 12 mm brass pipe. • A solenoid-actuated valve configured to deliver compressed air at a predetermined pressure and duration sufficient to dislodge accumulated particulate matter without impairing the transmitter’s diaphragm or associated measurement apparatus. • A control interface integrated into the plant’s Distributed Control System (DCS), programmed with purge cycle logic that initiates purging operations at fixed intervals or upon detection of measurement anomalies indicative of line obstruction. • Safety interlocks configured to prevent purging during operational states in which purging could compromise process stability or safety. By automating the purging process, the invention eliminates the need for manual intervention, thereby reducing personnel exposure to high-temperature surfaces, airborne particulate hazards, and process-related risks. Implementation of the system has demonstrated a reduction in Risk Priority Number (RPN) from 4 to 2, improved measurement reliability, reduced unplanned outages, and increased overall equipment availability. The invention is designed for modular deployment and can be adapted for use in other industrial process environments where impulse line contamination presents a recurring operational challenge. The system may be retrofitted into existing plant configurations without significant modification to primary control architectures, providing a cost-effective, scalable, and replicable solution for safety enhancement and process optimization.
Disclaimer: Curated by HT Syndication.
