Introduction

The QuickTrip trip block assembly is designed for use in gas or steam turbine shutdown systems for quick

and reliable dumping of the turbine’s trip oil header. This integrated trip block assembly is intended for

use on mechanical-drive or generator-drive gas or steam turbines that use low-pressure (up to 34.5 bar /

500 psi) hydraulic trip oil headers.

The QuickTrip’s fault tolerant design makes it ideal for critical gas or steam turbine applications, where

turbine up-time and availability are essential. The trip block assembly’s 2-out-of-3 voting design provides

users with a very high level of system reliability as well as compliance with industry standard API-670.

This trip block assembly is designed to allow turbine controls and/or turbine safety systems to quickly

dump (bleed off) hydraulic header pressure during emergency trip or normal trip conditions. When

applied in conjunction with Woodward’s ProTechTPS logic solver, the QuickTrip allows users to

independently test each trip leg to verify operation and trip time. API-670 5th edition requires that all

components except for the final element (trip valve) shall be routinely tested while the turbine is in

operation.

With the use of trip solenoids, which respond in less than 50 milliseconds, the QuickTrip is designed for

gas or steam turbine trip systems where it is imperative that the entire trip system shut the system trip

valve as quickly as possible.