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QBJ-3WZ type speed monitoring emergency trip protection device

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QBJ-3WZ type speed monitoring emergency trip protection device

Brand Name : OEM

Model Number : QBJ-3WZ

Place of Origin : China

MOQ : 1

Price : Negotiation

Packaging Details : New original box

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QBJ-3WZ Speed Monitoring Emergency Trip Protection Device
The QBJ-3WZ emergency shutdown protection device serves as a critical safety component for steam turbine units, providing comprehensive monitoring throughout operation. During normal conditions, it continuously monitors turbine speed. In overspeed scenarios, the secondary emergency shutdown striker activates via centrifugal force, initiating an immediate turbine shutdown. The system employs three QBJ-CS-1 type sensors: one for speed measurement and two dedicated to emergency shutdown functions.
Technical Specifications
Speed Measurement Range 300～9999 rpm
Speed Display Range 0～9999 rpm
Speed Measurement Accuracy 0.1%
Input Signal Vp-p=0.05～30V
Emergency Interruption Impactor Detection Speed n>2500 rpm
Emergency Interruption Detection Speed Accuracy n<±5 rpm
Overspeed 1 Alarm Speed 3300 rpm (user-configurable)
Overspeed 2 Alarm Speed 3240 rpm (user-configurable)
Alarm Node Output Capacity AC220V (3A)
Power Supply AC220V±10%/50Hz
Sampling Frequency 1/64 second incremental sampling
Instrument Installation Panel mounting, Mounting Hole Dimensions: 154mm * 78mm * 260mm (W*H*D)
Operating Environment - Instrument -25℃～45℃ (Relative Humidity ≤80%)
Operating Environment - Sensor -10℃～100℃ (Relative Humidity ≤90%)
Sensor Mounting Thread M16*1
Sensor Screw Length L60～200mm (customizable)
Primary Functions
  • Real-time display of current unit speed with emergency trip indication after striker deployment
  • Emergency stop functionality for immediate shutdown
  • Overspeed alarm system with configurable thresholds
  • Maximum turbine speed capture and recording
  • Block display function for operational status
  • Enhanced anti-interference capability for reliable operation
This protection device ensures operational safety and reliability for steam turbine systems through precise speed monitoring and rapid emergency response capabilities.

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QBJ-3WZ speed monitoring device

      

emergency trip protection sensor

      

rotational speed monitoring device

      
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