HP Fill and Purge Assembly for BHEL Generators — Vens Hydroluft Manufacturing Capability

Overview

Vens Hydroluft Corporation, Chennai, India is a proven manufacturer of HP (High Pressure) Fill and Purge Assemblies for BHEL THDF and THRI series hydrogen-cooled generators. The HP Fill & Purge Assembly is the central gas management system controlling hydrogen filling, CO2 purging, and air scavenging sequences in generator cooling systems.

Technical Specifications

SS316L construction throughout. High-pressure flanged manifold fabrication. Precision filter housing machining. Sintered metal filter element production (10-25 micron). DN100-200 connections, PN16 pressure rating. API 614 compliant. BHEL specification TC9754251010.

Process Flow

Complete system from H2/CO2/Air supplies through inlet isolation valves, PRV (pressure relief valve), PCV (pressure control valve) pressure regulator, HP Safety Spool, outlet valves, distribution headers to BHEL THDF/THRI generator connection.

5-Step Purge/Fill Sequence

Step 1 - Air evacuation and CO2 fill. Step 2 - CO2 pressurization to operating pressure. Step 3 - CO2 hold and leak test. Step 4 - H2 displacement of CO2 (density monitoring). Step 5 - H2 fill to operating pressure (3-4 bar) with purity verification (>98% H2).

Vens Supply Scope

Complete HP Fill & Purge Assembly including all valves, regulators, safety spool, distribution headers, filter housings, sintered elements, pressure gauges, and instrument connections. Full instrument list included with each assembly.

Why Vens

Three core manufacturing competencies — high-pressure SS316L flanged manifold fabrication, precision filter housing machining, sintered metal filter element production. Made in India, globally compliant to API 614 and international power generation standards.