Portable low-temperature internal expanding type blocking device for pipeline

Abstract

The invention provides a portable low-temperature internal expanding type blocking device for a pipeline. The device comprises a circular plate body, wherein an air exhausting valve is mounted in thecenter of the circular plate body; two symmetric mounting and dismounting handles which are structured the same are arranged on the outer side surface of the circular plate body and are positioned attwo sides of air feeding and air exhausting valves; a circular barrel body is arranged at the inner side of the circular plate body; tapes are correspondingly arranged on the outer wall surfaces of two ends of the circular barrel body. With the adoption of the device, pipe ports exceeding DN750 can be blocked and protected; pipeline ports can be effectively tightly blocked during marine transportprotection, general storage protection and coating painting of the pipeline; rainwater, sandy dust, welding slag, scrap iron, impurities, foreign matters and the like can be prevented from entering the pipeline to pollute the inner wall of the pipeline during transportation and construction; in addition, the pipeline is hard to fall off and lose during the prefabricating and transporting process;the device can be recycled; the blockage protection for the pipeline ports is improved; the device has the functions of being simple and reasonable in structure, economic, convenient to operate, firmand durable.

Description

technical field [0001] The invention relates to a pipeline installation and transportation blocking protection device, in particular to a low-temperature portable internal expansion type sealing device for pipelines. Background technique [0002] At present, for steel structure modular construction projects such as liquefied natural gas (LNG), especially some international projects, the construction is first completed in modules at the construction site, and then the modules are shipped to the destination for assembly. This places demands on marine protection. Different projects have different protection requirements. Sea transportation must be well preserved in order to effectively avoid the pollution of external impurities to the pipeline and the corrosion of the inner wall of the pipeline by humid air. [0003] China is located in East Asia. If there is an LNG project in the Arctic or Antarctic, the sea transportation will first pass through the tropics and then to the ...

AI Technical Summary

Problems solved by technology

Pipelines below 30 inches are conventional pipelines, and there are corresponding protection products on the market. Pipelines above 30 inches are mostly used for LNG transportation, and are rarely used at ordinary times. There are almost no corresponding pipeline blocking protection products. The conventional protection is to use rubber or canvas However, such materials are easy to fall off and be lost during storage protection and sea transportation, and cannot be recovered and recycled; at the same time, simple rope binding or iron wire binding cannot be tightly attached to the pipe wall In this way, not only the proper sealing and protection effect cannot be achieved, but also the inner wall of the process pipeline may be polluted, which will cause unimaginable difficulties and safety hazards to the subsequent pipeline cleaning construction, and waste manpower and material resources , and it is not easy to clean up, and there is also the risk of endangering the lives of workers during the construction of the restricted working space in the pipeline

Increase pipeline cleaning, protection and maintenance costs

Images