Pipeline Testing Equipment for Long Term Pressure and Temperature Cycle Testing on Plastic Pipeline Systems with PLC Control

CHW Series Hot and Cold Water Circulation Testing Machine

This specialized testing system evaluates the performance of plastic pipeline systems and fittings according to strict standard specifications. The equipment applies predefined internal pressure to pipeline specimens while subjecting them to alternating cold and hot temperature cycles over a predetermined testing duration. After completing the required test cycles, the system verifies whether the tested pipes and fittings exhibit leakage or rupture defects.

System Components: The apparatus consists of four core functional components: cold water exchange execution module, hot water exchange execution module, specimen testing chamber, and industrial chiller. It features elegant appearance design, modular structural architecture, cutting-edge control technology, stable operation performance, reliable quality, and intuitive user-friendly operation.

• Patented Open Structural Design: High-temperature and high-pressure water circulates only within test specimens and dedicated connecting pipelines. The equipment uses an atmospheric-pressure container design with all other circulation pipelines operating under normal atmospheric pressure. Core components including valve bodies and sensors function under normal pressure conditions, ensuring long-term reliable operation. This innovative design has been granted an official technical patent.
• Full Closed-Loop Control Architecture: The apparatus uses an imported fully digital control system that delivers closed-loop precise regulation of internal pressure for the entire test pipeline system. The control system automatically adjusts the main circulation pump and control valves based on real-time parameters including liquid temperature, running duration, and pipeline flow rate to maintain constant internal pressure. This design completely eliminates water hammer risk during rapid alternating switching between hot and cold water flows, with overall performance exceeding national standard requirements.
• Intelligent Cycle Switching Mechanism: The control system automatically adjusts operation status based on real-time monitoring data including inlet and outlet water temperatures, liquid levels of cold and hot water tanks, and cold-hot mode switching duration. It intelligently operates return valves to ensure proper water flow management, with temperature fluctuation between tanks strictly controlled below 3°C, achieving extremely low energy consumption during long-term operation.
• Low-Noise Operation Optimization: The test pipeline is fitted with a proprietary water flow controller that significantly reduces operation noise caused by high-speed water flow erosion.
• High-Efficiency Refrigeration System: The system uses imported industrial chillers as the low-temperature cold source, applying water-to-water cooling technology to boost refrigeration efficiency and ensure optimal compressor operation. This design improves overall cooling efficiency and significantly extends industrial chiller service life.