液壓裝置-外文資料翻譯-液壓系統(tǒng)(更新版)
【正文】 s back into the pump, and the whole volume has again to be pressed. A rotary pressor with prepression cannot be operated with hydraulic fluid. d. Provision for air or water cooling of the cylinder so that the temperature of the air in the pressor may be kept as near isothermal as possible, and the volume of air being delivered correspondingly increased. This is a feature not normally necessary on a hydraulic pump. e. Means for controlling gas leakages during pression either by piston rings on a reciprocating piston pressor, or fine clearances on the rotary types. f. Adequate inlet valve to prevent throttling of the ining air, with the consequent loss of volumetric efficiency. 。具有預(yù)壓縮裝置的旋轉(zhuǎn)壓縮機(jī)不可能輸送油流。相反，不僅將影響泵的輸出，而且影響可能產(chǎn)生的最高壓力。 b 要真正均勻而非脈沖式輸送。要么用特殊密封要么緊縮加工間隙。 這是因?yàn)樵陂g隙容積中被壓縮的任何氣體都將再次膨脹而不是 被排放掉。泵內(nèi)無(wú)預(yù)壓力，一旦輸氣閥口打開(kāi)，管線中氣體膨脹而回到泵內(nèi) ，泵內(nèi)全部流體不得不再次被
黨政相關(guān)相關(guān)推薦
鄂ICP備17016276號(hào)-1