Design And Research Of Attraction Characteristic Of The Intrinsically Safe Solenoid For 6 Way Hydraulic Valve

The energy level of the intrinsically safe solenoid was controlled.It was lower than the critical condition of the ignition of explosive gases no matter under normal or fault conditions.The sparks could not be produced and the temperature of the ignition of explosive gases could not be reached.So explosive-proof requirements were reached not by other means of shielding or blocking.The intrinsically safe solenoid for hydraulic valve was designed and researched.On the basis of the empirical formula,the key structure sizes of the solenoid were calculated.The structure of the solenoid was simulated by Ansoft software and compared with the experimental data.The intrinsically safe solenoid for hydraulic valve was designed with the resistance 220?,the rated stroke 2.3mm and rated suction 29 N at 20 degrees C.This paper completed the following research works:(1)According to the requirements of national standard GB3836.1 and GB3836.4,the intrinsically safe solenoid control circuit were designed and calculated.The parameters of each component were selected and calculated.The intrinsically safe solenoid for hydraulic valve was designed with the resistance 220?,the rated stroke 2.3mm and rated suction 29 N at 20 degrees C.According to design theory and empirical formula of the solenoid,the key structure sizes of the solenoid such as the armature diameter,the ampere turn,the coil resistance,the wire diameter and so on were calculated.(2)The designed structure of the solenoid was set up and simulated by Ansoft software.The key structural parameters of the solenoid were analyzed.The improvement of the structure parameters of the solenoid was finished,including the upper and lower side separated magnetic angle,the position of the isolation ring,the length of the armature,the weld length and so on.The static and dynamic suction characteristics of the improved solenoid were simulated.The results of the solenoid’s static and dynamic characteristics were obtained.(3)According to the results of the simulation analysis of the solenoid,the drawings of the experimental prototype of the intrinsically safe solenoid for hydraulic valve were designed.On the basis of the selections of the dimensional tolerance and parts of the materials,the development of the experimental prototype of the intrinsically safe solenoid for hydraulic valve was done.(4)Based on the test bench of solenoid,the tests of the static characteristics of the experimental prototype of the intrinsically safe solenoid were done,including the displacement-force tests of the solenoid under 24 V and 85% rated voltage.The comparative analysis was obtained by comparing the simulation results with the experimental results.The tests of the dynamic characteristics of the experimental prototype of the solenoid were done,including the dynamic tests of time-force and time-current.The comparative analysis was obtained by comparing the simulation results with the experimental results.