论文部分内容阅读
针对ＬＣＪ１２５０ 气平衡式链条抽油机存在气平衡故障率高和现场维修困难等问题， 提出将气平衡改造成工作可靠的重力平衡的方案， 并确定了改造的三个原则： 一是保证整机的可靠性， 使抽油机运转平稳， 振动噪音小， 寿命长； 二是力求降低生产成本， 减少零部件制造， 尽可能选用原来的通用件， 舍去平衡缸和空气包等气平衡附件， 在原往返架主体上悬挂一个配重箱；三是力求不改变冲程、冲次及最大悬点载荷等主要技术参数。现场使用表明， 改造后的链条抽油机运转平稳可靠， 振动和噪音比原来大大减轻， 经济效益显著。
In view of the gas equilibrium LCL1250 chain pumping unit has the problem of high gas balance failure rate and on-site maintenance difficulties, the paper proposes a scheme of transforming the gas balance into a reliable working balance of gravity and confirms the three principles of reform: First, The reliability of the pumping unit smooth operation, vibration and noise, long life; second is to reduce production costs and reduce parts manufacturing, as far as possible the original selection of common parts, In the original return to the main body of a counterweight box; Third, strive to not change the stroke, stroke and the largest hanging point load and other major technical parameters. The field use shows that the modified chain pumping unit runs smoothly and reliably, the vibration and noise are greatly reduced compared with the original ones, and the economic benefits are remarkable.