Underwater connecting flange for petroleum pipelines

Abstract

The invention relates to the field of petroleum flange manufacture, in particular to an underwater connecting flange for petroleum pipelines. The underwater connecting flange comprises an upper flange base, a washer and a lower flange base, wherein the upper flange base comprises exhaust holes, conical water stop pieces, an upper magnet ring and a lower magnet ring, and the exhaust holes are formed in the upper flange base; the conical water stop pieces are mounted in the exhaust holes; the upper magnet ring is connected with a bottom plate of the upper flange base; the lower magnet ring is connected with the lower flange base; the washer is positioned between the upper flange base and the lower flange base, the washer is connected with the upper magnet ring and the lower magnet ring, and the washer is made from an elastic rubber material; and bolt holes are formed in both the upper flange base and the lower flange base. Through the design of the conical water stop pieces, an unidirectional draining function can be realized in the work process of the underwater petroleum pipelines, and the underwater mounting of the petroleum pipelines is facilitated; and at the same time, water impurities can be discharged out of the pipelines in the actual use process of the pipelines, and petroleum exploiting work is facilitated.

Description

technical field [0001] The invention relates to the field of petroleum flange manufacturing, in particular to an underwater connecting flange of petroleum pipelines. Background technique [0002] Nowadays, with the continuous development of human civilization, the continuous innovation of industrial level, and the continuous improvement of oil extraction technology, the longest problem encountered in the process of oil extraction is the transmission problem encountered in the process of oil extraction. In the prior art, pipelines are usually used for oil extraction. It can be seen that the requirements for oil transmission pipelines are relatively high in the process of oil extraction, and the selection of connectors for oil transmission pipelines is also important during the transmission process. Pipeline connectors usually use flanges for connection. In the existing oil pipeline connection flanges, it is usually aimed at the connection between two pipelines. For the connec...

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Problems solved by technology

[0002] Nowadays, with the continuous development of human civilization, the continuous innovation of industrial level, and the continuous improvement of oil extraction technology, the longest problem encountered in the process of oil extraction is the transmission problem encountered in the process of oil extraction. In the prior art, pipelines are usually used for oil extraction. It can be seen that the requirements for oil transmission pipelines are relatively high in the process of oil extraction, and the selection of connectors for oil transmission pipelines is also important during the transmission process. Pipeline connectors usually use flanges for connection. In the existing oil pipeline connection flanges, it is usually aimed at the connection between two pipelines. For the connection environment, it is generally in the normal atmosphere. In the process of offshore oil exploitation, usually Oil pipelines need to be connected underwater, and the pipelines connected underwater usually need to be placed underwater before use. Therefore, there will be a drainage process, and the pipeline itself generally does not have a drainage function. Therefore, people urgently need An underwater connecting flange of an oil pipeline, which can realize the one-way drainage function of the underwater oil pipeline in the working project through the design of the conical water retaining piece, which is convenient for the underwater installation of the oil pipeline, and at the same time, it can be used in the practical process of the pipeline On the one hand, water impurities can be removed from the pipeline, which is beneficial to oil extraction.

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