On December 6, 2023, with the commissioning of the last section of the Hangzhou Natural Gas Utilization Project into a ring and a network, the construction of a 35-kilometer pipeline from Suoqianmen Station to Jiangdongmen Station, the high-pressure gas pipeline around Hangzhou has formed a closed loop, and the pattern of "multi-point gas connection and annular gas supply" has been fully realized.
2024 target key projects
As the last two valve chambers in the construction of the project, the valve chamber of the red fifteenth line and the valve chamber of Xiao Shao Road are also the key projects of the target in 2024.
Recently, the valve chamber of the red fifteenth line and the valve chamber of Xiaoshao Road have entered the final stage of the project, and the leaders at all levels of the gas group attach great importance to it, and the professional departments have gone to the site for many times to carry out strict inspection and audit work to provide support for the safety and security of the cutover operation.
October 10
At 11:12, the high-pressure pipeline began to depressurize
At 14:13, the discharge is completed and the nitrogen replacement begins
△ Nitrogen replacement vaporizer pipeline connection work
Due to the large diameter of the high-pressure pipe from Jiangdongmen Station to Suoqianmen Station and the high operating pressure, the difficulty of this replacement work has been greatly increased.
October 11
At 05:49, after a night of hard work, the two gate station teams worked together to carry out a series of operations such as depressurization, release, replacement, and testing of the high-pressure pipeline according to the established plan, successfully completed the nitrogen replacement, and handed over the baton to the construction unit for cutover.
△ The pressure reduction is completed, and the medium pressure external air supply source switch valve at the front door station
October 12
At 08:50, the pressurization operation of the high-pressure pipeline from Jiangdongmen Station to Suoqianmen Station was completed, and the valve chamber of the Red 15th Line and Xiaoshao Road were officially put into operation.
Red fifteen line valve chamber and
The valve chamber of Xiao Shao Road was successfully put into operation
It is a high-pressure gas pipeline in Hangzhou
Safe operation provides more reliable guarantee
Future, Gas Group
It will continue to be adhered to
The principle of "high pressure is no small matter".
Safeguard the stable operation of city gas