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壓力表在使用中的問題

時間:2011/11/21閱讀:610
分享:
大家都知道,目前市場上的壓力表主要部件是由彈簧管、接頭、機芯組成。壓力表的焊接主要有4種:比如氬弧焊接、鉛鋅焊接、白銀焊接、特種焊接等等。壓力表的工作原理是通過彈簧管變形;扇型齒與中心齒輪工作(機芯)帶動指針在面版的刻度上顯示被測介質(zhì)的壓力。壓力表單簧管目前正常工作的頻率是10萬次;而在壓力表使用過程中會經(jīng)常出現(xiàn)以下幾個問題;例如:
⑴.壓力表指針在管道或者設備卸壓后不歸到零位;
⑵.另外壓力表扇型齒再工作一段時間會出現(xiàn)磨損現(xiàn)象;
⑶.加隔離片解決壓力表指針不回零位問題;
⑷.離片扇型齒加寬,解決壓力表接觸面,抗磨損以達到使用壽命延長的功能;
⑸.壓力表的指針因為被測介質(zhì)瞬間脈沖加大,將指針沖到止檔下面。
注:壓力表的心臟部件是壓力表的機芯,壓力表損壞是由于機芯損壞而導致儀表不能正常使用;已經(jīng)占80%以上。
通過在現(xiàn)有的儀表技術(shù)在壓力表機芯基礎上加限位釘隔,這樣解決了壓力表指針的跳檔問題。

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