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魔界狂想曲- 第一三六九章 蒸汽機模型機(二)-玄幻奇幻-萬花小說
当前位置:萬花小說>书库>玄幻奇幻>魔界狂想曲> 第一三六九章 蒸汽機模型機(二)

第一三六九章 蒸汽機模型機(二)

  有一個比較大的金屬塊,跟先前那塊恰好可以組裝到一起。


  在這個較大的金屬塊的左右兩側各開一個貫穿的洞。


  然後跟先前那個金屬塊裝到一起,上麵的金屬塊的洞眼恰好跟下麵的管道的兩端連通到一起。


  下麵這個金屬塊的底部比較大,可以包住上麵的金屬塊,然後用鐵樁子給鎖死。


  再接著鑄造一個彎曲的管子,它的一頭可以連接到鐵鍋內,另一頭分叉,有兩個洞,與方才那個兩個洞的金屬塊恰好可以裝到一起,並且它們的洞眼可以對正。


  一個金屬板夾在它們之間。


  金屬板有兩個洞,它可以被左右推動,推向前的時候,左邊的洞使得兩個金屬塊左邊的管道處於連通狀態,右邊的管道處於關閉狀態;拉向後的時候,兩個金屬塊左邊的管道處於關閉狀態,右邊的管道處於連通狀態。


  這個金屬板與上述兩個金屬塊都連接的非常緊密,中間幾乎沒有縫,漏氣現象會比較輕。


  這個金屬板通過另一個連杆裝置與右邊的輪子相連。


  先不忙著組裝,觀察一下金屬板與活塞的運動是否一致。活塞推到管道的左邊快到頭的時候,金屬板恰好把管道左邊的氣路打開,從而把活塞給推向右;活塞快到管道的最右邊的時候,金屬板恰好可以把右邊的氣路給打開,從而再把活塞推回左邊。


  金屬板的運動是受到約束的,所以會一直以直線的方式左右運動。


  接著就是安裝。


  這些巨大的金屬塊都是一個包著另一個,側麵開洞,用粗粗的鋼棍子把它們給固定到一起,非常結實,很難崩開。


  那個連接鍋爐與氣缸的管道在鑄造的時候遇到了一定的麻煩。


  馬林動用了自己的雕刻能力,在兩塊陶泥板上各自雕刻出管道的一半,就像是把管道從圓心處剖成左右兩半,接著再把兩塊陶泥板拚接到一起,管子也拚成了整體。接著向裏麵澆鐵水進行鑄造。


  造好後管子上存在很多多餘的部分。


  但是它很結實,通氣也很順暢。


  這個管道可以包住氣缸的中部方便從側麵打入鐵棍進行固定。


  管道的另一頭可以塞進鍋爐的出氣口,由進氣口給包住,同樣能夠從側麵打入鐵棍進行固定。


  鍋爐的上麵一塊可以把下麵一塊給包住,從側麵打入鐵棍固定。


  整個裝置最大的特點是非常的結實。


  都裝好之後他忍不住就開始進行實驗。


  給鐵鍋裝好水。


  下麵加木炭,開始燃燒。


  一開始氣缸沒有任何反應。


  氣缸連著的輪子隻有非常小的摩擦力。


  很容易被驅動,主要阻力是活塞與氣缸之間的摩擦力。


  幾分鍾後活塞開始往複運動。


  速度很慢。


  接著速度越來越快。


  再然後發出緩慢的咣當咣當的聲音。


  似乎動力很不足。


  馬林也不知道這是怎麽回事。


  他先不管,讓它一直運轉下去,想知道它的穩定性怎麽樣,會不會出現故障。


  它的動力非常的令他不開心。


  隻夠帶動風扇乘涼的。


  具體是哪裏出的問題,他並不清楚。


  他悶悶不樂的坐著觀看它。


  為了造這個蒸汽機模型,他花費了很多天,先後有不少人見過。


  它運轉起來後不久,便有人過來圍觀。


  雖然馬林對它非常的不滿意,觀眾們卻對它非常驚奇。


  “它能自己動啊。真是了不起。”


  ‘機靈鬼’湊上前來觀察它的連杆裝置。


  連杆就是兩個棍子以一個轉軸連接在一起,它的最大用處就是能夠把往複運動變成旋轉運動,或者反過來把旋轉運動變成往複運動。


  華夏國一些少數民族至今還在用手推磨,因為不想彎腰和走動,他們就會使用連杆裝置。用一根棍子推動另一個棍子,而前麵這個棍子以轉軸與磨盤的手柄相連。於是人一推一拉石磨就會轉一圈。


  用曲柄連杆推動輪子旋轉,這是瓦特的關鍵發明之一。


  他還有另一個重要發明,那就是給活塞兩個方向都連通氣路,通過對氣門的掌控,讓活塞往複運動,更加充分的利用了鍋爐的水蒸氣,減少空耗時間。


  如果這個鍋爐和蒸汽機裝在車子上,它的動力甚至無法驅動自己向前跑。


  至於怎麽進行改進,馬林準備再進行一番觀察。


  它很小。活塞的直徑隻有十幾厘米,這並不重要,關鍵是鍋爐也不夠大,能夠提供的熱力有限。


  如果把活塞和氣缸都給做的更大,是否能夠提高推力呢?


  他不清楚。


  這可能涉及到熱力學問題。


  對於同樣大小的鍋爐,可能氣缸做的更大之後,爆炸的危險會降低,設備的磨損也會降低。


  但是他遇到了一個難題,那就是活塞與氣缸之間存在縫隙,他無法把縫隙給縮小。


  他有個想法是,活塞的邊緣使用軟金屬,做得稍微大一些,強行塞進氣缸,多摩擦幾回,雙方就會產生非常小的縫隙。


  可是不精準可能有多種形式。氣缸的內壁在不同位置可能不一致,這個誤差不容易消除。


  據稱這個問題曾經把瓦特給為難的夠嗆。


  馬林知道自己可以用鏜床來加工氣缸的內壁。


  但是他的鏜床不標準,存在很大的誤差。它是他自製的。


  瓦特的鏜床,生產內徑一米五的氣缸時,活塞與內壁之間塞不進一枚硬幣。


  這種事可是了不得。


  他的鏜床怎麽也沒有這麽精密。他加工內徑二十厘米的氣缸時,活塞與氣缸的夾縫就會有一枚硬幣這麽大。


  把這個縫隙給變小具有重大意義。


  事實上,一根直線就把他給難倒了。


  他是生產不了那麽直的鋼尺,也打磨不了那麽平的鋼材台麵,想加工出標準的圓柱形鋼材也是太吃力。


  這種事就沒有什麽好法子麽?

  他知道,兩塊鋼板如果都很平,那麽它們便可以精密的貼合在一起,中間不出現夾縫。


  通過這一點可以逐漸對它們進行打磨,使之越來越平。


  如果邊緣合攏,他就看不到內部的合攏情況,這怎麽辦呢?


  對一塊鋼板塗顏料,不給另一塊鋼板塗顏料。


  然後把它們對接在一起。


  另一塊鋼板會染上顏色,但是中間一些部分會沒有顏色。


  這就說明,這個位置可能凹了,或者對麵的鋼材這個位置凹了。


  然後就需要進一步打磨。


  不斷的反複進行。


  問題是,這麽兩塊鋼板對到一起,長寬都是一點五米,它們的最大間隙不超過一枚硬幣的厚度。


  這個難度就高了。


  它就要求這種加工必須非常的標準。


  馬林對此不知道該說點啥。

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