Shenyang Institute of Sources Technology Development and Shenyang EMT Piping Technology Co., Ltd. are specialized manufacturers of products for corrosion monitoring and pipeline cleaning. Since our inception in 1993, we have been delivering pipeline equipment and associated services to pipeline industries, including petroleum, chemical processing, oil and gas, and water treatment. To ensure optimal performance and efficient resource utilization, we often deliver customized products to meet the unique requirements of each project.

The Non-intrusive Pig Signal Indicator by EMT is a cutting-edge device designed to enhance the efficiency and accuracy of pipeline monitoring. As a leading provider of pipeline inspection solutions, EMT has developed this state-of-the-art indicator to address the challenges faced in detecting and tracking pigs during oil, gas, water, and other transmission pipeline operations. With its advanced features and reliable performance, the Pig Signal Indicator revolutionizes the way pipeline inspections are conducted, ensuring seamless pig passage detection.

Classification of oil pipelines in pipeline cleaning has two categories: The first is the internal oil pipeline of the enterprise. For example, the gathering and transmission pipeline connecting the oil well with the metering station or the combined station in the oil field. Or pipelines inside refineries and oil depots. Its length is generally short, and it is not an independent business system. The other is a long-distance oil pipeline. For example, the pipeline transporting qualified crude oil from the oil field to the refinery or railway transfer station. Its pipe diameter is generally large, and there are various auxiliary projects. This kind of pipeline is an independent system. They have another name “trunk pipelines”. According to the type of medium transported, oil pipelines include crude oil pipelines and product oil pipelines. To ensure the service life of the pipeline, both of them need pipeline cleaning.

In the pipeline pigging operation, we usually install the Pipeline Pig Signaller on the incoming and outgoing pipelines of long-distance pipelines. Because after long-term use, after passing the ball indicator. This product will cause equipment corrosion and aging of the rubber sealing ring of the movement. This will lead to different degrees of oil and gas leakage. There are also failures such as indicator action failure. At present, our solution is to shut down the pipeline. Then the operator will release and empty the oil and gas in the pipeline. Then the maintenance personnel shall repair and replace the indicator movement.

Working principle The end of the extension sleeve is provided with a striker which can be triggered in both directions. It passes through the connecting pipe of DN50 and probes into the interior of the pipe near the pipe wall. When the pig passes, it will move the striker. It transmits the action to the instrument button through the connecting rod in the sealing shaft sleeve. Then it triggers the operation of the display instrument.