WOODWARD 1-9907-2108

الوصف

The WOODWARD 1-9907-2108 is a critical safety device: a QuickTrip Overspeed Protection System. This particular part number specifies a version of the QuickTrip designed for use in hazardous locations.

WOODWARD 1-9907-2108: QuickTrip Overspeed Protection System (Zone 2, Chemically Resistant)

The WOODWARD 1-9907-2108 is a highly specialized and independent safety system engineered to provide crucial overspeed protection for industrial prime movers such as steam turbines, gas turbines, and large engines. It acts as a last line of defense to prevent catastrophic equipment damage, injury, or loss of life by initiating a rapid shutdown when dangerously high speeds are detected.

Product Overview

This part number is part of Woodward’s QuickTrip series, which is renowned for its high safety integrity and robust design.

• Product Type: Overspeed Protection System / Safety Trip System
• Manufacturer: Woodward
• Part Number: 1-9907-2108
• Model Designation: QuickTrip
• Safety Integrity Level (SIL): This model is SIL-3 certified. This signifies a very high level of safety integrity, indicating a low probability of dangerous failure and suitability for the most critical safety functions in industrial processes.
• Environmental Rating: It’s specifically designed with chemically resistant seals and is certified for Zone 2 hazardous locations. This means it can safely operate in environments where flammable gases, vapors, or mists may occasionally be present, and it’s built to resist corrosive substances.
• Function: Continuously monitors the rotational speed of the prime mover. If the speed exceeds a predefined dangerous limit, the QuickTrip system rapidly issues a trip signal. This signal typically commands a solenoid valve to quickly vent hydraulic pressure, causing the prime mover’s fuel or steam valves to close immediately, thus initiating a safe shutdown.

Detailed Product Description

The Woodward 1-9907-2108 QuickTrip is engineered for maximum safety and reliability in the most demanding industrial environments. Key features and characteristics include:

• SIL-3 Certification: Achieving Safety Integrity Level 3 (SIL-3) means the system adheres to rigorous international safety standards (e.g., IEC 61508/61511). This level is typically mandated for applications where the potential consequences of an overspeed event are severe.
• Independent Operation: QuickTrip systems are designed to operate entirely independent of the primary control system (e.g., the main governor or DCS). This critical separation ensures that even if the primary control system malfunctions or fails, the overspeed protection remains fully active and capable of tripping the machine.
• Rapid Response: A hallmark of an effective overspeed protection system is its speed. The QuickTrip is designed to detect an overspeed condition and initiate a trip extremely quickly (often within milliseconds) to prevent the prime mover from reaching destructive speeds.
• Redundant Speed Inputs: To enhance reliability and prevent false trips or missed events, QuickTrip systems typically use multiple independent speed sensors (such as magnetic pickups) to monitor rotational speed. This allows for voting logic (e.g., 2-out-of-3) to increase confidence in the speed measurement.
• Robust and Chemically Resistant Design: The “chemically resistant seals” and Zone 2 hazardous location rating highlight its durable construction. It’s built to withstand challenging industrial conditions, including exposure to potentially corrosive chemicals and flammable atmospheres, common in power generation, oil & gas, and chemical processing plants.
• Self-Diagnostics and On-Line Testing: Modern safety systems like QuickTrip incorporate extensive self-diagnostic capabilities to continuously monitor their internal health. They also often support on-line testing of individual components without needing to shut down the prime mover, which helps maintain high availability and verify safety functions.
• Fault-Tolerant Design: The use of multiple internal components (often three solenoid valves in a 2-out-of-3 voting configuration) ensures that a single component failure will not lead to an unintended trip and allows for on-line repair, further enhancing system reliability.

Technical Specifications (for the 1-9907-2108 QuickTrip)

Typical Applications

The WOODWARD 1-9907-2108 QuickTrip Overspeed Protection System is indispensable in any industrial setting where high-speed rotating machinery presents a significant safety risk:

• Power Generation Plants: Crucial for protecting large steam and gas turbines in thermal, combined cycle, and nuclear power plants.
• Oil & Gas Industry: Employed on gas turbines driving compressors or generators in refineries, pipelines, and offshore platforms, where hazardous atmospheres are common.
• Chemical Processing: Protecting turbines and engines in chemical plants where corrosive or flammable materials are present.
• Marine Propulsion: Ensuring the safe operation of marine turbines and large engines.