1. Opening voltage test Clean air with nominal pressure is connected to the inlet of the electromagnetic pulse valve, and 85% of the nominal voltage and 0.03s of the width are input on the electromagnetic valve to check whether the electromagnetic pulse valve is open properly. 2. Close air pressure test. In the air inlet of the electromagnetic pulse valve, the clean air with 0.1 MPa air pressure is connected, and the electric signal of the closing valve is input to check whether the electromagnetic pulse valve is reliably closed. 3. Withstand voltage test The air inlet of the electromagnetic pulse valve is connected with clean air of 0.8 MPa and lasts 60 minutes. The leakage of the sealing parts on the electromagnetic pulse valve is checked. 4. Insulation resistance test (1) Measuring the insulation resistance of the electromagnetic coil to the outer shell under the specified environmental conditions by using a 500V megohmmeter with a measuring range of 0M~500M and a precision of 1st order. (2) Place the valve in the temperature and humidity regulating box, set the temperature at 35 degrees and the relative humidity at 85%. Apply 50 Hz and 250V sinusoidal AC voltage between the electromagnetic coil and the valve body for 1 minute to check whether there is breakdown. 5. Anti vibration test Fixed the valve on the vibration test bench, withstanding vibration frequency of 20 Hz, full amplitude of 2 mm and duration of 30 minutes, check whether the fasteners of each part of the valve are loosened or not, and whether the work is normal. 6, diaphragm life test Clean air with nominal pressure is connected to the inlet of the electromagnetic pulse valve. The nominal voltage with a width of 0.1 s and a spacing of 3 s is input on the electromagnetic valve, and the continuous or cumulative working times of the valve are recorded. Test classification: Editors 1, the products must be inspected by the provisions of the 2, 3, 4 and 9 requirements of the valves one by one before they leave the factory. 2. Sample 15% (not less than 10) of the products from the factory at random every quarter, and inspect them according to the 5 and 8 clauses of the technical requirements. type inspection In case of any of the following circumstances, type inspection shall be carried out: A) the first batch of products; B) changes in production processes and materials. C) valves produced in batches should be carried out every three years. D) the requirements of type inspection for national quality supervision structure.PULSE VALVE COIL Manufacturer
Post time: Nov-11-2018