Maoming Gravity Petrochemical has obtained patents for multi-entry jacketed tube connectors and heat exchangers

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According to information from the Intellectual Property Office as of April 3, 2025, **Maoming Gravity Petrochemical Equipment Co., Ltd. has obtained a patent titled “A multi-entry jacketed pipe connector and heat exchanger incorporating it”, with the approval announcement number CN 222703869 U; the application was filed in January 2024. The patent abstract indicates that this utility model relates to the field of petrochemical equipment technology, and specifically to a multi-entry jacketed tube connector as well as a heat exchanger equipped with such a connector. It includes a lower central tube and an inlet outer tube; a lower annular channel with a sealed bottom is formed between the lower central tube and the inlet outer tube. The side wall of the inlet outer tube is provided with medium introduction pipes, which comprise a main introduction pipe and a secondary introduction pipe, the inner wall of the main introduction pipe being in partial tangential contact with the inner wall of the inlet outer tube. The bidirectional medium introduction pipes allow for the introduction of one primary medium and one auxiliary medium; these two mediums enter the jacket in opposite directions, thereby enhancing each other’s spiral flow pattern. As they flow in the same direction, the two mediums mix rapidly. Moreover, it is possible for the auxiliary medium to adjust the primary process medium to the optimal jacket medium required by the central tube, thereby improving the stability of the jacketed heat exchanger and maintaining the stability of the main process medium flow. The lower central tube is equipped with swirl vanes that guide the medium inside it in a spiral pattern, thereby creating a counter-rotating swirl between the medium inside the tube and the medium in the jacket, and enhancing the heat exchange between them. According to Tianyancha, Maoming Gravity Petrochemical Equipment Co., Ltd. was established in 1995 and is located in Maoming City; it is a company that specializes in the manufacturing of specialized equipment. The registered capital of the enterprise is 152.020748 million RMB, while the paid-in capital is 48.501796 million RMB. According to the big data analysis provided by Tianyancha, Maoming Gravity Petrochemical Equipment Co., Ltd. has participated in 339 bidding projects. In terms of property-related information, it has 3 trademark records and 425 patent records; additionally, the company holds 108 administrative licenses.