Petroleum pipeline connecting device and using method thereof

Abstract

The invention discloses a petroleum pipeline connecting device and a using method thereof. A first pipe body and a second pipe body are arranged in a first shell; the inner side wall of the first pipebody is in threaded connection with a third pipe body, and the outer side wall, away from the first pipe body, of the third pipe body is in threaded connection with the inner side wall of the secondpipe body; and cone-shaped pipes are welded to two ends, located in the first pipe body and the second pipe body, of the third pipe body. Through cooperation of connecting pipes, second grooves and nuts, the tightness between the connecting pipes and the first shell and between the connecting pipes and the second shell is improved, and the airtightness and stability among the first pipe body, thesecond pipe body and the third pipe body are further improved. Through cooperation of the first shell, a second shell, rubber plates, protruding parts and third grooves, contact between internal factors of the soil environment and the pipeline joint is prevented, and the friction force between first circular plates, second circular plates and the third pipe body and the rubber plates is increased,so that the stability and airtightness of pipeline connection of the device are better.

Description

technical field [0001] The invention relates to the technical field of petroleum pipelines, in particular to a connection device and a use method of petroleum pipelines. Background technique [0002] Oil pipelines are used to transport oil to various places, and the connection between the main pipe and the branch pipe of the oil output pipeline is easily damaged and difficult to maintain. In order to solve the above problems, the main pipe and the branch pipe are connected by a pipe connecting device, which includes a buffer chamber, a branch pipe connecting pipe, and a main pipe connecting pipe. Since most of the oil field mining sites are located in deserts with harsh conditions, or on the sea, there are often strong winds or bad weather, which is harmful to the oil pipelines installed on the ground, especially the joints of the pipelines. Flange connections are used between the branch pipe connecting pipe and the branch pipe, and between the main pipe connecting pipe and...

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Problems solved by technology

[0003] China Publicly Authorized Invention: Pipeline Connection Structure (Publication No.: CN104776281A) discloses a pipeline connection structure, which realizes a fixed structure and good airtight pipeline connection. However, this connection structure only serves as a fastening connection between pipelines. It cannot protect the external environment. For example, most oil pipelines are buried underground, and the joints of the pipelines are eroded by the soil environment for a long time, such as extrusion of plant roots, insect pests, changes in soil pH, etc., which can easily cause pipelines Cracks and corrosion, which in turn lead to oil leakage. Simply increasing the thickness of the pipeline connection structure or increasing the number of layers of the pipe body will increase the weight of the connection. Under the action of gravity, the connection structure is still easy to break, so , propose a connection device and method of use for oil pipelines

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