test conditions

-Pressure range: Pulse 0.1-1.2MPa; Static pressure/explosion 0-10MPa

-Medium and temperature: clear water/deionized water; Controllable at room temperature of 25 ± 2 ℃ or high temperature of 40-90 ℃

-Pulse parameters: frequency 6-45 times/min (commonly 0.5-2Hz); Boost/buck rate ≤ 0.05MPa/s.

-Pressure holding and frequency: pressure holding 0-9999s; cycle frequency 100000-100000 times

-Control and accuracy: PLC+industrial computer; Pressure accuracy ± 0.5% FS; real-time curve and data storage.

Core testing content

1. Voltage withstand pulse life test

-Pressure cycle: 0.1MPa → 0.8MPa → 0.1MPa, cycle ≥ 500 times (standard) or 100000 times

-Testing items: no leakage, no deformation, no cracks; Flow attenuation ≤ 15%; Sealed without failure

-Applicable: complete machine, filter bottle, RO membrane shell, pressure tank, connector/pipeline

2. Static pressure withstand test

-Step by step pressurization: Starting from 0.1MPa, maintain pressure for 10 minutes at each step until reaching the rated pressure

-Test item: no leakage under pressure; Pressure drop ≤ allowable value; No abnormalities found in the interface/weld seam

3. Blasting pressure test

-Continuous pressure increase: rate of 0.5MPa/s until rupture, record the burst pressure and rupture location

-Qualified threshold: filter bottle ≥ 3.5MPa; Whole machine/membrane shell ≥ 2.4MPa

4. Water hammer impact test

-Simulate water hammer: 1.05MPa peak, high-frequency pulse, assess instantaneous impact resistance.

-Test items: No bursting, no detachment, and no leakage in sealing.

5. Temperature coupling durability test

-High temperature pulse: 40-90 ℃ hot water+pressure cycle, simulating long-term high-temperature aging.

-Freeze thaw cycle: alternate from -20 ℃ to room temperature, test low-temperature crack resistance

6. Sealing and leakage detection

-Pressure holding leak detection: Focus on detecting leaks at interfaces, end caps, welds, and sealing rings.

-Pressure drop method: pressure drop after holding pressure ≤ specified value

Applicable samples and execution standards

-Applicable: complete water purifier, filter bottle/cartridge, RO membrane shell, pressure water storage tank, inner tank, connector/pipeline.

-Standards: GB/T 30307-2013, GB/T 30306-2013, QB/T 4144-2010, NSF/ANSI 42/58.