第142章 提速方案预定,轴承的为难,国产机床,先发育一波
笔趣阁(biquge2345.com)更新快,无弹窗!
这次会议总共持续了两天。会议结束后,林言都还没有和其他大佬们怎么打招呼,就被黑吉辽三省的大佬簇拥着往火车站方向走。
其他省的代表还想凑上来打招呼乃至耍小心思,可惜主任和奶奶并肩而行并把林言送上车站,让这些大佬们无从下手。
即使这样,在临近火车即将出发时,还是有人远远扯着嗓子喊“小林同志,欢迎你来咱们x省做客,到时候我一定会好好招待你”之类的话,弄得东三省的大佬们齐齐探出脑袋并狠狠瞪着他们,场面要多护犊有多护犊。
列车从首都进入东三省的领地后,林言并没有回黑省哈市老家过年,而是直接在辽省地界下车,并且联系上赵司长以及铁道部的专家们,一起协商着运力方面技术升级的事宜。
运力问题实在是迫在眉睫,不仅东三省的货运量跟不上,还影响全国各省的经济发展以及物资调配,实在是刻不容缓。
不过这技术升级不仅中国头疼,就连全世界各国都头疼,尤其是苏联那边的运输问题更加严重,所以这件事很难一蹴而就便全盘解决,只能步步为营。
行政方面的工作,林言和那些铁道部的研究员们讨论完毕后,交由赵司长他们统筹,至于技术方面升级的问题,林言则在研究室内和大佬们各种探讨。
研究室内,除了林言之前见过的翟旭外,还有其他后世耳熟能详的大佬们,如石老、应老、程老等,他们要么是奠基人并且是副部长级别,要么就是院士级别的大佬,翟旭在他们面前都得各种虚心请教,不敢有丝毫怠慢。
但他们在见到林言后,并没有摆出丝毫长者前辈架子,相当和蔼慈祥地和林言各种寒暄招呼,足足客气了好几分钟,这才和林言进入正题。
随后,这些大佬们和林言就在草稿纸上各种涂涂改改,甚至还唇枪舌战地激烈讨论,整个屋子都闹闹哄哄,毫无之前那和睦氛围:
“现在空车跑40,满载不到30。问题不在走行部,在锅炉供汽跟不上。”
石老皱眉道:“解放型的锅炉烟管布置是日本人留下的底子,大小烟管配比不合理,燃烧率上不去。我建议改烟管布置,增加小烟管数量,同时加装自动焚火装置,提高锅炉供汽率。”
“你这什么鬼建议?”
“别忘了增加小烟管数量的同时,烟气阻力也会增大,到时候造成的阻力损失你算了吗?”
应老毫不客气地反唇相讥,同时拿起铅笔在草稿纸上刷刷计算,套公式拿数据说话:“现在大烟管直径130毫米,小烟管直径65毫米。假设小烟管数量增加20%,那么烟气流通面积减少约15%。按伯努利方程,压差与速度平方成正比。Δp=ξ·ρv05/2。速度增加18%,压差增加39%,通风阻力加39%,到时候咱们这个通风系统能顶得住?”
林言听着他们俩的建议,没有着急下定论,而是拿着铅笔在应老刚才的算式下接着涂涂改改,并说出自己的想法:
“那应老,如果咱们再把烟箱也配套改的话,是不是就可以解决这个问题呢?”
说着,林言就在草纸上画了一个简图,随后看着凑过来的应老和石老,简要解释:
“喷气口缩径,同时像我之前提过的那样加锥形套筒,提高阀气喷射速度。”
“之前改用锥形套筒的时候我就和翟工计算过,假定蒸汽流量不变,速度与截面积成反比,v60/v69=A69/A60=0.0707/0.0380≈1.86。”
“原喷气速度约88米每秒,改进后约149米每秒。烟箱负压来源于喷口抽力,与速度平方成正比。原本烟箱负压大约一百毫米水柱。速度从80提升到150,速度平方之比为15005/8005=22500/6400≈3.52。假设效率系数不变,改进后负压大约是100×3.52×0.44,约155毫米水柱。”
听到林言的话,翟旭也立刻凑过来,并且点点头:“确实,烟管阻力虽然增加39%,但经过小林这样弄的话,抽力增加足足55%,抽力增量大于阻力增量,通风还是没问题。”
听到翟旭的话,石老满意点头的同时,看着林言的目光充满赞赏和惋惜。只恨自己麾下没有一个学生能有林言这般有灵性,甚至连一半灵性的都未曾见到,否则他哪需要担心以后的衣钵传承?
应老却依旧不放心,又写了几个算式并询问:“就算通风能顶住,燃烧效率呢?这样的出气情况,到时候咱们的煤量能顶住吗?”
听到这,翟旭连连点头:“放心吧应老,之前小林都弄过,在出气超过50%之后,燃烧效率不仅没有下跌,而且从原来70%涨至85%,不知道节煤多少呢。”
“啥,85%?”
听到翟旭这话,应老差点就吹胡子瞪眼,语气里带着浓浓的怀疑:“苏联那边最好的炉子燃烧效率
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