Results 41 to 50 of about 421,671 (269)

Application test of energy-saving coating on crude oil pipeline heater

open access: yesYou-qi chuyun, 2020
The fuel energy consumption of heater accounts for a large proportion of the total energy consumption ofcrude oil pipeline transportation. Energy-saving coating can increase the tube blackness and wall reflectivity of the heaterwithout changing its ...
Entao HUANG   +7 more
doaj   +1 more source

The effect of final cooling temperature on the wax deposition of Daqing oil modified with additives

open access: yesYou-qi chuyun, 2020
In order to analyze the effect of final cooling temperature on the wax deposition laws of the crude oil modified with additives, keep the same temperature difference of oil wall and control different final cooling temperatures, static wax deposition ...
Dong ZHANG   +7 more
doaj   +1 more source

Drying law of natural gas pipeline with dry air method

open access: yesYou-qi chuyun, 2022
The study on drying rate of pipeline with dry air is the basis for establishing and solving the drying and purging model, as well as determining the optimal indexes of air drying. The existing drying rate model does not meet the actual working conditions.
GE Hua   +7 more
doaj   +1 more source

Development status and improvement strategy of in-line inspection technology and management

open access: yesYou-qi chuyun, 2020
Pipeline defects have always been the dominant factor leading to pipeline failure. Using in-line inspectiontechnology to inspect and identify various pipeline defects has become a widely acknowledged practice in Chinaand abroad.
Zhiping WU   +5 more
doaj   +1 more source

Stress concentration test and simulation of girth weld with misalignment based on wide plate tensile test

open access: yesYou-qi chuyun, 2021
The stress state is the key factor for the fitness-for-service assessment of girth weld, and the misalignment causes the discontinuity of girth-welded structure, which changes the stress state of girth weld.
Zhiwen LI   +7 more
doaj   +1 more source

Check and optimization of stress on nozzle of centrifugal compressor in China-Russia Eastern Gas Pipeline

open access: yesYou-qi chuyun, 2020
Centrifugal compressor system is known as the heart of a gas transmission station. To adapt to the design trend of compressor with large diameter, high pressure and high temperature difference, and to meet the requirement for smaller allowable stress on ...
Yan ZHOU   +6 more
doaj   +1 more source

Measurement methods and influence factors of coupon off-potential

open access: yesYou-qi chuyun, 2020
Coupon instant-disconnect method is an efficient way to evaluate the effectiveness of cathodic protection for buried pipelines. With the increasing measurement demand for pipeline off-potential in the daily management of pipeline cathodic protection, the
Jun ZHAO   +6 more
doaj   +1 more source

Application of LOPA analysis method in compressor stations of China-Russia Eastern Gas Pipeline and consideration

open access: yesYou-qi chuyun, 2021
In order to further promote the regional management mode of oil and gas pipelines, evaluate the adequacy of existing protection measures for the typical stations and enhance the risk control capability thereof, the safety integrity level(SIL) of the ...
Yu DIAO   +5 more
doaj   +1 more source

Construction of full life cycle integrity management system for oil and gas pipelines

open access: yesYou-qi chuyun, 2020
In order to strengthen the risk prevention and control of oil and gas pipelines, the integrity management concept is introduced into the Chinese pipeline industry.
Pengchao CHEN   +2 more
doaj   +1 more source

Shear behavior test of foamed concrete in Yangtze River shield tunnel of China-Russia Eastern Gas Pipeline Project

open access: yesYou-qi chuyun, 2022
Yangtze River shield tunnel is an important control project of China-Russia Eastern Gas Pipeline Project (Yongqing-Shanghai). The ultra-length tunnel (10.226 km) caused many engineering problems.
Shengwen ZHAN   +6 more
doaj   +1 more source

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