J4 ›› 2010, Vol. 40 ›› Issue (6): 1415-1418.

Previous Articles     Next Articles

Buffering the Backward Impact of Piston of Liquid-Jet Hammer

ZHANG Yong-guang, PENG Jian-ming, LIU He, YIN Qi-Lei, FAN Li-ming   

  1. College of Construction Engineering / Laboratory of Technology for Drilling Under Complex Condition of Ministry of Land and Resources/ Key Laboratory of Geodetection Technology &|Instrumentation of Ministry of Education, Jilin University|Changchun 130026, China
  • Received:2010-04-20 Online:2010-11-26 Published:2010-11-26

Abstract:

The effect of rigidity of buffering spring on the flowing character of the liquid in the controlling passages of fluidic element and the backward impact velocity of the piston is studied by means of CFD dynamic analysis and is validated by experiments. The results show that exerting spring force axially on the piston has no effect on the switch of the main jet in the fluidic element, and buffering spring with proper rigidity can make the backward impact velocity decrease greatly, the backward impact velocity of the piston will reduce 52.88% when rigidity of spring enhances five times, which is helpful for reducing impact loads and keeping the parts made of tungsten carbide in the fluidic elements from breaking when the liquid-jet hammer works in well drilling.

Key words: piston, backward impact buffering, main jet switch, CFD dynamic analysis

CLC Number: 

  • P634.4
[1] Zhang Xinxin, Peng Jianming, Sun Mingze, Wu Dongyu. Study on the Sealing Characteristics Between the Piston and Cylinder in the High-Energy Liquid-Jet Hammer Based on CFD Method [J]. Journal of Jilin University(Earth Science Edition), 2017, 47(2): 534-541.
[2] Wang Fuping, Li Peng, Li Guolin, Peng Jianming. Stress Analysis of the Piston Rod Return in High-Energy Liquid-Jet Hammer Based on Ls-Dyna [J]. Journal of Jilin University(Earth Science Edition), 2016, 46(5): 1482-1489.
[3] LI Guo-lin, BANG Jian-ming, LIU He, ZHAO Zhi-qiang. Prediction and Verification of Critical Flow Velocity for Jet Nozzle of |Hammer Hydro [J]. J4, 2010, 40(1): 159-163.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] CHU Feng-you, SUN Guo-sheng,LI Xiao-min,MA Wei-lin, ZHAO Hong-qiao. The Growth Habit and Controlling Factors of the CobaltRich Crusts in Seamount of the Central Pacific[J]. J4, 2005, 35(03): 320 -0325 .
[2] ZHOU Li-ping, SHEN Xiang-dong, LI Xue-bin, BAI Zhong-qiang. Experiment Study of Mechanical Properties of Natual Pumice Powder Cement-Soil[J]. J4, 2009, 39(3): 492 -497 .
[3] HUANG Yu-long, WANG Pu-jun, SHAO Rui. Porosity and Permeability of Pyroclastic Rocks of the Yingcheng Formation in Songliao Basin[J]. J4, 2010, 40(2): 227 -236 .
[4] PAN Dian-qi,ZHANG Zu-pei,PAN Dian-cai,CHEN Yi-min,XU Rui. A Test Research on Longitudinal Wave Velocity of Artificial Frozen Clay Under Different Temperature and Moisture Conditions[J]. J4, 2006, 36(04): 588 -591 .
[5] FU Zhe，ZHOU Yun-xuan, LIU Dian-wei, LIU Wan-song. Design of the FeatureBased ObjectOriented Data Model and Implementation of Prototype System for a Virtual GIS[J]. J4, 2006, 36(04): 647 -652 .
[6] TENG Ji-wen, LIU Cai, HAN Li-guo, RUAN Xiao-min, YAN Ya-fen, ZHANG Yong-qian. The Dynamical Mechanism for Medium Rapture and Motion of Deep Matler on Wenchuan-Yingxiu MS8.0 Earthquarce,2008[J]. J4, 2009, 39(4): 559 -583 .
[7] LU Jin-cai, LI Yu-hong, WEI Xian-yang, WEI Jian-she. Research on the Depositional Environment and Resources Potential of the Oil Shale in the Chang7 Member,Triassic Yanchang Formation in the Ordos Basin[J]. J4, 2006, 36(6): 928 -0932 .
[8] HUANG Ji-guo,HUANG Guo-xin,NIE Guang-zheng,WEI Hai-juan,LV Ai-min,WANG Xue-song. Experimental Study on the Treatment of Landfill Leachate in a TwoPhase(UBF-UASB) Anaerobic System at Mid-Temperature[J]. J4, 2007, 37(1): 144 -0147 .
[9] SUN Cai-zhi, LIU Yu-lan, YANG Jun. Research on the Ecological and Sustainable Groundwater Table Regulation in the Lower Liaohe River Plain[J]. J4, 2007, 37(2): 249 -254 .
[10] SHU Ping, QU Yan-ming, WANG Guo-jun, DING Ri-xin, AI Xing-bo,JI Xue-yan, TANG Hua-feng, BIAN Wei-hua, WANG Pu-jun. Geological features of the volcanic reservoirs of the Songliao Basin and their geophysical detection[J]. J4, 2007, 37(4): 726 -0733 .
Copyright © Journal of Jilin University(Earth Science Edition), All Rights Reserved.
Tel: +86-431-88502374；13756165364　E-mail: xuebao1956@jlu.edu.cn
Powered by Beijing Magtech Co. Ltd