In the light of the problems of the air balance system of model lcj1250 chain drive pumping unit , it is proposed to change the air balance with counterweight balance , and three criteria for the modification is put forward : ( 1 ) ensuring the reliability of the unit with smooth operation , low noise and long life ; ( 2 ) cutting down the production cost and using less component parts as possible ; ( 3 ) carrying out modification without such main technical parameters as stroke , pumping speed and maximum polished rod load 針對lcj1250氣平衡式鏈條抽油機(jī)存在氣平衡故障率高和現(xiàn)場維修困難等問題,提出將氣平衡改造成工作可靠的重力平衡的方案,并確定了改造的三個原則:一是保證整機(jī)的可靠性,使抽油機(jī)運轉(zhuǎn)平穩(wěn),振動噪音小,壽命長;二是力求降低生產(chǎn)成本,減少零部件制造,盡可能選用原來的通用件,舍去平衡缸和空氣包等氣平衡附件,在原往返架主體上懸掛一個配重箱;三是力求不改變沖程、沖次及最大懸點載荷等主要技術(shù)參數(shù)。
Abstract : in the light of the problems of the air balance system of model lcj1250 chain drive pumping unit , it is proposed to change the air balance with counterweight balance , and three criteria for the modification is put forward : ( 1 ) ensuring the reliability of the unit with smooth operation , low noise and long life ; ( 2 ) cutting down the production cost and using less component parts as possible ; ( 3 ) carrying out modification without such main technical parameters as stroke , pumping speed and maximum polished rod load 文摘:針對lcj1250氣平衡式鏈條抽油機(jī)存在氣平衡故障率高和現(xiàn)場維修困難等問題,提出將氣平衡改造成工作可靠的重力平衡的方案,并確定了改造的三個原則:一是保證整機(jī)的可靠性,使抽油機(jī)運轉(zhuǎn)平穩(wěn),振動噪音小,壽命長;二是力求降低生產(chǎn)成本,減少零部件制造,盡可能選用原來的通用件,舍去平衡缸和空氣包等氣平衡附件,在原往返架主體上懸掛一個配重箱;三是力求不改變沖程、沖次及最大懸點載荷等主要技術(shù)參數(shù)。