How to select the solenoid valve in cold storage, installation and inspection

by:AIRWOLF     2020-06-19
How to select the solenoid valve in cold storage, installation and inspection time choose, should according to the size of the cold storage refrigeration equipment line, configuration and the same size of the electromagnetic valve size. Electromagnetic valve body material shall be compatible with pipeline center medium; Working voltage should be consistent with the power supply voltage. For different working place should adopt different models of electromagnetic kuo. Such as solenoid valves cannot be used for pipes in the cooling pipe road, because the water will have solid impurities, scale and easy to block a little balance hole on the diaphragm. Used for lubricating oil separator electromagnetic valve on return line, must have the anti-shock measures, so as to avoid compressor exhaust pressure fluctuations have an impact on auxiliary valve opening and closing. Used for the suction of the electromagnetic valve, because of its easy condensation, so be with dampproof coil or closed solenoid valve. The environment temperature is higher than ℃, should use heat coil, etc. Every work of electromagnetic coil current, voltage, frequency and power has certain limits, cannot use, so as not to burn out. In voltage drop, the coil suction also fell. Ac frequency is low, the suction increases, but the coil heat, easy to burn out. Electromagnetic valve assembly, coil part should be assembled properly according to instruction pattern, so as to avoid increasing reluctance. Due to the increase of magnetic resistance will not only reduce the electromagnetic suction, direction, and sometimes causes a suction influence valve action. Solenoid valve must be in the coil, and the vertical is installed in the pipeline, otherwise, will can't work normally because of iron core and failure. The medium inside the solenoid valve flow direction from the top of the valve core to here, so it must be installed according to indicate the direction of the arrow on the valve body, the arrow direction is the direction of the medium inside the pipeline flow. In order to check whether the electromagnetic valve work normally, can a light bulb in parallel on the road in electromagnetic valve power supply cord, to indicate the switch. Can also be used in electromagnetic valve power cord series a manual switch on the road, when using hand switch and cut off the circuit, such as electromagnetic valve can hear the sounds, the movement of valve core is indicated solenoid valve is normal. Solenoid valve work disorder occurs mainly in the coil burn, valve core remanence jam and core iron these three aspects, using the above method can examine and determine. For iron core remanence doesn't automatically when the power is down, can remove iron core, use the method of heating or break, eliminated.
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