The Development Of Mechanical Seals

Mechanical seal was first invented and patented in 1885 in The United Kingdom and began to be applied in 1900. In 1876, the first ammonia refrigerator appeared and the development of air separation technology, until 2020s, mechanical seal in the refrigerator device was not more applications. Therefore, the world's famous sealing companies such as Britain crane sealing company, Pacific company in Germany in 1923 was engaged in the production of mechanical seals, the United States dura sealing company in 1934 formally produced mechanical seals. A later-starter, Japan's Bira Company developed mechanical seals in 1950 and produced them in 1954.

Because of World War II and the development of the petrochemical industry, reducing leakage and saving energy became necessary. Therefore, the automobile manufacturing industry, pump manufacturing industry and petrochemical enterprises widely use mechanical seals.

Mechanical seals were popularized in the United States in 1945 and in Japan in 1955. Germany used mechanical seal research earlier, but because of the impact of the war, it was not reorganized until the post-war development, currently in the sealing theory research and leading position in the world.

China began to study, manufacture and use mechanical seals in the oil refining industry from the 1950s. Since 1958, mechanical seals have been used in most centrifugal oil pumps. In 1966, China prepared to build the first professional production of mechanical seal factory - tianjin mechanical seal factory (now with the British Crane seal company joint venture into Tianjin Crane seal Co., LTD.), and then established the Tianjin mechanical seal Research Institute. At present, the country has nearly 100 manufacturers of mechanical seals. The annual output of various types of mechanical seals is 100,000 sets, widely used in various industrial sectors.

Seal is involved in the edge of the multi-discipline science, to study and explore the same of seal theory research in China university of petroleum, the subject is not yet fully formed, the national seal 'not Beijing institute of chemical industry, tianjin university and other colleges and universities and the relevant departments investigate and study, as the dynamic thermal stress and mechanical seal friction pair ring end face cracking mechanism, PV value of mechanical seal, performance test of mechanical seal, influence of auxiliary system on seal life, etc.

Why mechanical seals can be so widely used, in addition to theoretical guidance, design improvement, more important is the results of military vibration material research and development.