Aolong ZFY-4500 X-ray Oil Cooler

Overview

The Aolong ZFY-4500 X-ray Oil Cooler is a purpose-engineered thermal management system designed exclusively for high-duty-cycle X-ray radiographic inspection systems and industrial X-ray generators. It operates on a closed-loop forced-convection principle, circulating dielectric cooling oil through the X-ray tube housing and high-voltage generator to maintain stable thermal equilibrium during continuous or pulsed operation. Unlike generic industrial chillers, the ZFY-4500 integrates oil-specific flow dynamics, pressure-rated hydraulic architecture, and electromagnetic compatibility (EMC) shielding optimized for proximity to sensitive X-ray imaging electronics. Its 4000 W cooling capacity supports medium-power X-ray sources (e.g., 160–300 kV sealed-tube or open-tube systems), ensuring consistent focal spot stability, reduced thermal drift in detector calibration, and extended anode life—critical parameters in ASTM E94/E1742-compliant radiographic testing workflows.

Key Features

• High-reliability, oil-immersed centrifugal pump rated for continuous duty at 14 L/min flow with low pulsation (<±3% variation), minimizing cavitation risk in high-viscosity dielectric oils (e.g., Shell Diala, Nynas Nytro).
• Stainless steel fluid path (316 SS) and brazed-plate heat exchanger with copper-aluminum fin stack, delivering corrosion resistance against oxidation-prone transformer-grade insulating oils.
• Integrated pressure monitoring (0–60 bar range) with dual-stage safety cutoff: primary limit switch at 55 bar and secondary mechanical relief valve compliant with ISO 4413 hydraulic system safety standards.
• Low-noise acoustic design (58 dB(A) at 1 m) achieved via vibration-damped mounting, acoustically insulated compressor enclosure, and laminar-flow fan ducting—essential for laboratory and cleanroom-integrated NDT facilities.
• Wide ambient operating envelope (+5 °C to +35 °C) validated per IEC 60068-2 environmental test protocols; storage specification (−25 °C to +70 °C, oil-free) enables safe transport and seasonal depot storage without fluid degradation.

Sample Compatibility & Compliance

The ZFY-4500 is compatible with standard mineral-based and synthetic dielectric cooling oils used in industrial X-ray tubes (e.g., Shell Diala S4 ZX-I, Nynas Nytro Libra, and equivalent ASTM D3487 Type II formulations). It does not support water-glycol or non-dielectric coolants. All wetted components comply with RoHS Directive 2011/65/EU and meet UL 61010-1 requirements for electrical safety in measurement/control equipment. The unit is CE-marked for EMC (EN 61326-1) and low-voltage directive (2014/35/EU). While not certified to FDA 21 CFR Part 11, its analog control interface and mechanical interlocks support integration into GLP/GMP audit trails when deployed within validated NDT process lines per ISO 9712 and EN 473.

Software & Data Management

The ZFY-4500 employs a microcontroller-based analog control system with local LED status indicators (flow OK, temp OK, pressure OK, fault) and no embedded firmware or network interface. It generates no digital logs, timestamps, or exportable data—consistent with deterministic, safety-critical thermal subsystems in regulated NDT environments. For traceability, users may integrate external PT100 temperature sensors (0–100 °C range) and 4–20 mA pressure transmitters into facility SCADA or PLC networks (e.g., Siemens S7-1200, Allen-Bradley CompactLogix) using standard 0–10 V analog outputs provided at terminal block J1. No proprietary drivers or cloud connectivity are implemented.

Applications

• Thermal stabilization of cabinet-type and gantry-mounted X-ray radiography systems (e.g., for weld inspection per ASME BPVC Section V, aerospace castings per AMS 2630).
• Cooling support for portable and semi-portable X-ray units used in field pipeline girth weld assessment (API RP 1104 Annex B).
• Backup or redundancy cooling in dual-source X-ray setups where uninterrupted thermal management is required for QA/QC throughput compliance.
• Integration with computed radiography (CR) and digital radiography (DR) systems requiring stable tube output over >30-minute exposure sequences (e.g., thick-section composite inspection per ASTM E2737).

FAQ

Is the ZFY-4500 compatible with water-cooled X-ray tubes?
No. It is engineered exclusively for dielectric oil circulation systems. Water or glycol-water mixtures will damage internal seals and void warranty.
Does it include oil level monitoring or automatic top-up?
No. Oil volume must be manually verified and maintained per OEM X-ray tube specifications before commissioning.
Can it operate at altitudes above 2000 m?
Derating is required: cooling capacity decreases by ~3.5% per 1000 m elevation due to reduced air density affecting condenser efficiency.
What maintenance intervals are recommended?
Oil filter replacement every 6 months or 2000 operational hours; full oil change every 24 months or 8000 hours under continuous use.
Is remote start/stop signaling supported?
Yes—via dry-contact terminals (NO/NC) on J2 connector, compatible with standard X-ray generator interlock circuits per IEC 62495.