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                                        水壓試驗機試驗方法

                                        2013-03-05 0

                                        水壓試驗機試驗方法:

                                        1.試壓:

                                        水壓試驗機試驗時,并調節好電子稱(使之處于零位)。根據不同的壓力啟動低壓泵或高壓泵,系統開始增壓。通過比例調壓閥可以調節驅動氣源的壓力大小,從而調節輸出壓力大小和升壓速率。當被測氣瓶達到設定壓力值時,壓力傳感器發出信號,關閉驅動氣源開關切斷氣源,關閉氣控閥,增壓泵停止工作,進入保壓狀態。當達到保壓時間時,控制系統發出信號,再次啟動增壓泵進行增壓。對水壓爆破試驗機試壓的狀況下,當測試氣瓶破裂時,系統發出信號,關閉驅動氣源的開關切斷氣源,高壓泵停止工作。

                                        2.泄壓:

                                        壓力不斷增加,直至壓力容器爆破或在試驗過程中強行按“停止”按鈕,PC發出指令,PLC做出相關動作:調節電氣比例閥,使其輸出驅動氣壓為零。高壓泵由于沒有氣源,而停止工作,不再產生動力,同時打開卸壓閥13,系統壓力卸掉直至壓力為零,系統才能夠再次啟動。


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