电、气双驱动型盘刹液压系统设计

目前石油钻机液压盘刹的动力系统均是通过电机带动液压泵产生压力。常规设计是配备两台泵组,互为备用,这种形式虽有双泵的冗余设计,但驱动的最终源头都是电力。并且一般在使用过程中,泵启动后就不能停止,系统需持续提供压力,如果停电或没电时系统将无法工作。因此将传统的双泵形式设计为主泵为电机泵、备用泵为气动泵的双驱动形式,保证了刹车设备在停电或没电的状态环境下仍能工作。同时提高泵压、增大蓄能器容量,采用减压阀实现高压储能低压使用,既能让主泵实现间歇性工作,又能克服气动泵流量较小的限制。气动泵的驱动压力小,不会产生漏电和操作上的危险。此设计既节省了电力,又起到节能减排的效果。

Hydraulic System Design of Disc Brake for Electric and Pneumatic Double Drive Type

At present, the power system of hydraulic disc brake of oil drilling machine is driven by electric motor to generate pressure of the hydraulic pump. Conventional design is equipped with two pumps, each other as a backup. Although this form has a re-dundant design of the pump, but ultimate source is driven by electricity. And generally in the use process, the pump can not stop after start, the system needs to continue to provide pressure. If the power outage or no electricity, system will not work. Therefore, the tradi-tional double pump form was changed into dual drive form that the main pump was the motor pump, the standby pump was the pneu-matic pump, to ensure that the brake device could still work under the conditions of power outage or no electricity. At the same time, the pump pressure was improved, the capacity of the accumulator was increased, pressure reducing valve was used to achieve high pressure energy storage, low pressure be used. Not only the main pump could work intermittently, but also the limitations of pneumatic pump flow could be overcome. Pneumatic pump drive pressure was small, the risks of leakage and operation would not be generated. This design not only saves the power, but also has the effect of energy saving and emission reduction.