Description

SN2-TQZ Scraper Passage Indicator represents a crucial advancement in pipeline monitoring technology, providing reliable detection of pig movement through pipeline systems. As an essential tool for pipeline maintenance and operational efficiency, this intrusive bidirectional detector offers comprehensive monitoring capabilities that ensure complete visibility of pig location and movement. Particularly vital for industries where fluid transport integrity is paramount, the SN2-TQZ delivers the reliability and precision that modern pipeline operations demand.

1. Advanced Detection Features

Bidirectional Movement Detection

The SN2-TQZ excels in detecting pig movements in both upstream and downstream directions, providing complete pipeline surveillance without blind spots. This bidirectional capability ensures comprehensive monitoring coverage, allowing operators to track pig progress regardless of travel direction. The feature enhances maintenance procedure control and guarantees thorough cleaning or inspection processes throughout the pipeline network.

Versatile Installation Options

Engineered for installation flexibility, the SN2-TQZ connects via a standardized 2-inch flange system with two distinct configurations. The REUV variant accommodates ball valve mounting above the foundation, while the REDV version supports below-foundation valve placement under pressure. This design adaptability enables optimal positioning across diverse pipeline configurations and structural requirements, ensuring both functional effectiveness and maintenance accessibility.

Real-Time Monitoring Capability

The indicator provides immediate feedback upon pig detection, delivering real-time alerts that enable swift operational response. This instantaneous monitoring capability supports rapid decision-making, helping prevent potential issues and optimize pigging operations. The prompt availability of detection information maintains pipeline system integrity while reducing operational downtime and enhancing overall productivity.

2. Technical Specifications 

Multiple Display Configurations

• Type B: Features a mechanical indication flag that transitions from horizontal to vertical position upon pig passage

• Type C: Combines the visual flag indicator with SPDT or DPDT switch functionality that activates and remains engaged

• Type D: Incorporates digital time display with activation recording capability, plus SPDT/DPDT switch operation with automated reset timing

• Type CD: Hybrid solution merging Type C’s flag and switch features with Type D’s digital time display and reset functionality

Robust Construction Standards

The device features flange connections compliant with ANSI B 16.5 standards, with specific dimensional requirements from flange face to pipeline internal wall. The construction ensures reliable performance under varying pipeline conditions and pressures.

3. Installation & Maintenance Protocols

Precision Installation Process

Proper installation begins with compatible flange preparation and precise gasket placement to ensure accurate trigger alignment. The device insertion and screw-securing process maintains directional accuracy, while display components allow rotational adjustment for optimal viewing alignment. This systematic approach guarantees reliable detection performance and operational visibility.

Comprehensive Maintenance Requirements

Regular maintenance protocols include thorough seal inspections, with external seals replaceable on-site using standard components. Internal seals require manufacturer-level expertise for replacement, ensuring device integrity preservation. Safety procedures mandate complete pipeline depressurization before maintenance activities, with specialized tools including long bolts and appropriate spanners necessary for pressure-condition removal.

4. Operational Advantages

Enhanced Pipeline Management

The SN2-TQZ provides crucial data for pipeline integrity management, enabling precise tracking of maintenance activities and verification of pig passage. This information supports proactive maintenance scheduling and helps prevent operational disruptions through reliable monitoring.

Adaptable Performance

The combination of bidirectional detection, multiple display options, and flexible installation configurations ensures the indicator meets diverse operational requirements across various pipeline architectures and monitoring preferences.

Safety & Reliability

Built with robust materials and engineered for demanding pipeline environments, the SN2-TQZ maintains consistent performance while adhering to strict safety standards. The comprehensive maintenance protocols further ensure long-term reliability and operational safety.

Industry Applications

The SN2-TQZ Scraper Passage Indicator serves critical roles in oil and gas transmission pipelines, petrochemical processing facilities, water distribution systems, and industrial pipeline networks. Its robust design and reliable performance make it suitable for both upstream production and downstream distribution applications.

Technical Support & Service

Our technical team provides comprehensive support for installation planning, maintenance training, and operational optimization. Detailed documentation accompanies each unit, ensuring proper implementation and long-term performance reliability.