Pneumatic control valves use compressed air as the power source, a cylinder as the actuator, and drive the valve with the help of valve positioners, converters and other accessories to achieve on-off or proportional regulation. They accept control signals from industrial automation control systems to complete the regulation of various process parameters such as flow, pressure and tempera

On May 21st, in the centralized control room of the refining area of Lanzhou Petrochemical, the internal line operators of the 5 million tons/year atmospheric and vacuum distillation unit were carefully comparing the quality inspection and analysis results. By swiping the mouse at the control points on the screen, they adjusted the external release volume of the atmospheric line a

If you do not carefully check the usage condition and performance specifications of the wafer-type electric butterfly valve before installation, the wafer-type electric butterfly valve may have the following common faults: the valve cannot be reversed or the reversing action is slow, gas leakage, and the electromagnetic pilot valve is faulty, etc. (1) The inability or slow reversing act

As of April 21st, the Port Intelligence application large model of Dagang Oilfield has been online for three months, with an average daily call volume of over 10,000 times, covering more than 80% of the main business units. The Hongzhi Application large Model is an independently developed project of Dagang Oilfield. It deeply integrates the three major model technologies of Qianw

On April 8th, the "Four-All" pipeline welding inspection robot technology equipment system independently developed by our country was put into large-scale application, significantly improving the construction efficiency. This marks a leap from "segmented manual welding" to "all-terrain automatic welding" in the construction of long-distance pipelines in our country. The "Four-Al

Electric butterfly valve has the advantages and uses Electric butterfly valve is a very common pipeline flow regulation device, widely used, involved in many fields, such as the regulation of water flow in the reservoir dam of hydraulic power plant, industrial fluid flow regulation in the factory, etc., the following take you to understand the characteristics and advantages of electric

On March 24, the technical achievements of the "Key technologies and Applications for the detection and evaluation of high-risk devices in Oil and gas fields" led by Southwest Oil and Gas Field Company reached the international advanced level after expert appraisal, filling the gap in relevant domestic technologies. In view of the problems in the safety management of high-risk eq

Steam trap in the steam heating system plays a role in preventing steam drainage, choose the right trap, can make the steam heating equipment to achieve the highest efficiency. In order to achieve the best results, it is necessary to have a comprehensive understanding of the working performance and characteristics of various types of traps. There are many varieties of traps, each with d

In February, the daily production of coalbed methane in Qinshui coalbed methane field of Huabei Oilfield continued to maintain a high operating state of more than 7.2 million cubic meters. After the annual output of CBM reached 2.6 billion cubic meters in 2024, equivalent to 2.07 million tons of crude oil equivalent, and the first medium-shallow CBM field with an annual output of

The 21st Tianjin Industry Expo (CIEX) will be held at the National Convention and Exhibition Center (Tianjin) from March 6 to 9. It serves the whole industrial chain of industrial manufacturing, and has professional exhibition areas such as machine tools, robots, automation, new energy, electronic manufacturing, and intelligent pumps and valves, providing a one-stop exhibition platform for prom

In the fluid piping system, the valve is the control element, its main role is to isolate the equipment and piping system, regulate the flow rate, prevent backflow, regulate and discharge pressure. Because it is very important to choose the most suitable valve for the pipeline system, it is important to understand the characteristics of the valve and the steps and basis for select

1. Valve stem corrosion and protection Main causes of valve stem corrosion: The corrosion damage of the valve body is mainly caused by the corrosive medium, and the valve stem corrosion problem is mainly the packing. Not only the corrosive medium causes corrosion damage to the valve stem, but also the steam and water can make the valve stem and the packing contact spot. In part

At 13:00 today, with the issuance of gas production instructions, the production valve of Nanpu No. 1 gas storage well of Jidong Oilfield Branch of petrochina Co., LTD., located in Tangshan Sea of Bohai Sea, opened, and natural gas smoothly entered the production device along the process pipeline and was transported to the Beijing-Tianjin-Hebei region, which marked the official op

At 15:58 on November 12, with the opening of the last valve room No. 2 of Qinggao Line (Qing1 gas collection Station to Gaoshawo), natural gas in Ningqing block of Yumen Oilfield was smoothly injected into Qinggao Line pipeline, marking the era of "pipeline natural gas transmission" in Yumen Oilfield. Previously, Yumen oil field natural gas production is small, can not be directl

Fixed shaft ball valve is commonly used on natural gas pipelines, and its general inspection method is: turn the valve to the fully open or fully closed position, and check whether there is leakage through the discharge of the valve body drain nozzle. If it can be drained clean, it proves that the seal is good. If there is always pressure discharge, the valve can be considered to be leak