气缸式蓄能器对压裂泵流体脉动的抑制作用  

Effect of Cylinder-type Accumulator on Flow Pulsation Suppression of Fracturing Pumps

作　　者：杨波[1,2,3] 缪雄辉 杨鑫 YANG Bo;MIAO Xiong-hui;YANG Xin(School of Construction Machinery, Chang’an University, Xi’an 710064, China;National Engineering Laboratory for Highway Maintenance Equipment, Chang’an University,Xi’an 710064, China;SANY Heavy Energy Machinery Co. Ltd., Beijing 102202, China)

机构地区：[1]长安大学工程机械学院,西安710064 [2]长安大学公路养护装备国家工程实验室,西安710064 [3]三一重型能源装备有限公司,北京102202

出　　处：《噪声与振动控制》2016年第5期175-179,共5页Noise and Vibration Control

基　　金："十二五"国家科技支撑计划项目(2015BAF07B08)

摘　　要：针对压裂泵流量脉动较大带来的问题,在分析压裂泵脉动产生机理及其特点的基础上,设计可用于高压大流量场合中的气缸式蓄能器,建立气缸式蓄能器回路数学模型,得到脉动流量的幅频特性,仿真研究脉动抑制特性的影响因素,并对压裂泵安装气缸式蓄能器前后的脉动流量进行对比分析,结果表明:气缸式蓄能器可用于高压大流量场合中,其脉动抑制特性随气缸预充气压力、气缸直径、蓄能器连接管长度的增加而减弱,随气缸行程、蓄能器连接管直径的增加而增强;气缸式蓄能器能显著抑制压裂泵流量脉动,可将机械式三缸压裂泵的流量脉动由23.07%降至2.42%,将液压驱动式三缸压裂泵的流量脉动由33.33%降至3.22%;研究结果为高压蓄能器的设计和使用提供了一种新的思路和方法。To solve the problems induced by the large flow pulsation of fracturing pumps, the cylinder- typeaccumulator suitable to high pressure and large flow is designed based on the pulsation mechanism and characteristics of thefracturing pumps. Mathematical model of the cylinder-type accumulator circuit is built and the frequency characteristic ofthe flow pulsation is obtained. Influence factors of pulse suppression ability are studied through the simulation and the flowpulsations of the fracturing pump with and without the cylinder-type accumulator are compared mutually. The results showthat the cylinder- type accumulator is suitable for high pressure and large flow applications. Its pulse suppression abilitydecreases with the increasing of the precharge pressure, the cylinder diameter and the length of the accumulator’sconnecting pipe, and increases with the increasing of the cylinder stroke and the diameter of the accumulator’s connectingpipe. The cylinder-type accumulator can significantly suppress the flow pulsation of the fracturing pump. With the help ofthe cylinder-type accumulator, the flow pulsation of a mechanical three-cylinder fracturing pump is reduced from 23.07 % to2.42 %, and the flow pulsation of a hydraulic three-cylinder fracturing pump is reduced from 33.33 % to 3.22 %. This studyprovides a new idea for the design and application of the accumulators in high pressure and large flow situations.

关 键 词：振动与波 蓄能器 气缸 压裂泵 脉动抑制 

分 类 号：TH137.81[机械工程—机械制造及自动化]