Corrosion Fatigue Behavior of 6000 HP Fracture Pump of the Valve Body Under Different Plunger Stroke Times and Acid Fracture Fluid Environment

被引：0

作者：

Wang, Guorong ^{[1
,2
]}

Wen, Xinming ^{[1
,2
]}

Hu, Gang ^{[1
,2
]}

Wang, Mingcheng ^{[3
]}

机构：

[1] Southwest Petr Univ, Sch Mechatron Engn, Chengdu 610500, Peoples R China

[2] Southwest Petr Univ, Energy Equipment Res Inst, Chengdu 610500, Peoples R China

[3] Chengdu Lihang Technol Co Ltd, 100 Antai 3rd Rd, Chengdu 610041, Sichuan, Peoples R China

来源：

JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME | 2024年 / 146卷 / 02期

关键词：

valve body of fracture pump; corrosion fatigue life; modified Paris law; fatigue crack growth; loading frequency; CRACK-GROWTH; STEEL; PROPAGATION; SENSITIVITY; LOAD;

D O I：

10.1115/1.4064697

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

As a key equipment for oil and gas extraction, the fracture pump is prone to failure due to fatigue crack in the crossbore of valve body. First, under acid fracture fluid and different loading frequencies, the fatigue crack growth rate of 17-4PH stainless steel was obtained by test, and the test data were used the modified Paris law. Then it is applied to numerical simulations to research the fatigue crack growth behavior of the valve body. The results show that the higher the loading frequency in the fracture fluid, the lower the fatigue crack growth rate, which is consistent with the test results. The influence of the working pressure on the stress intensity factor of the crack front is greater than that of the plunger stroke times. The model accurately predicts the fatigue crack orientation and corrosion fatigue crack growth life of the valve body. Corrosion fatigue crack growth rate at different frequencies (not logarithmic scales)

引用

页数：11