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国产内燃机车上的电空阀,线圈烧损是普遍存在的电器惯性故障之一。各机务段多年来的运用实践表明,电空阀线圈的烧损情况十分严重。据统计,仅18台未加装保护的东风4型内燃机车,1983年共烧损四类电空间线圈39只。曾多次造成机破、临修,影响了机车的正常运用。众所周知,电空阀线圈烧损的主要原因是线圈引出线结构不良和绝缘薄弱,在峰值较高的系统操作过电压的冲击下,使绝缘击穿,形成匝间或层间短路,导致烧损。1981年开始,线圈烧损问题逐渐引起了有关部门的重视,并
Domestic air-powered diesel locomotive valve, coil burnout is one of the prevalence of electrical inertia failure. The various locomotive depots over the years the use of practice shows that the solenoid valve coil burning situation is very serious. According to statistics, only 18 units of DF-4 diesel locomotives with no protection were installed, and in 1983, a total of 39 burned four types of electric space coils. Has repeatedly caused the machine broken, temporary repair, affecting the normal operation of the locomotive. As is known to all, the main reason for the burn-in of the solenoid valve coil is that the structure of the coil lead wire is poor and the insulation is weak. Under the impact of the over-voltage operation of the system with a high peak, the insulation breakdown breaks down to form a turn-to-turn or interlayer short circuit. Beginning in 1981, the problem of coil burning gradually aroused the attention of relevant departments