The Research Of The Sealing Gasket In Axially Split Pump

Rubber gasket is widely used in the petrochemical industry, while in the pump industry, gasket plays a significant role in sealing, especially in the high-pressure, high temperature environment, therefore, the expectation on the sealing gasket is comparatively higher.In the current stage, all gaskets that we use are imported, and in the trend of localization, we are bound to face domestic substitutes because of the lower costs, which makes the localization of gasket one of the main work we need to do; also because of the big differences and uncertainties between domestic and imported gaskets, we are going to consider choosing one close long-term cooperating vendor to make a suitable replacement, which will be the option to localize the sealing gasket in the hydraulic test step firstly.Although China has a variety of non-asbestos fibers rubber gasket, but most of them are single fiber-reinforced rubber gasket, which have limits to a narrow temperature range, high manufacturing cost, anti-aging properties and poor creep relaxation problems. On the other hand, the imported sealing gasket is made by hybrid fiber to reinforce the rubber material, in which way it can get the advantages of a variety of fibers to get a better high temperature performance, adequate strength and toughness, high corrosion resistance as well. So the author considers using the hybrid fiber to do the research and prepare the local sealing gasket for replacement.In this article, we will use the domestic sealing gasket in hydraulic test of pumps which have advanced technology, so we will study the performance parameters of the imported gaskets and combined with the practice testing to prepare the suitable local gasket type whose parameters are close to the imported ones. Main research and verification processes are as below:First, study and analysis the imported gasket's performance and components used in the manufacturing process to determine the composition of its main components and what the major roles these components are playing.Second, study the effect of aramid fiber and glass fiber in rubber gasket material by mechanical performance tests, which were prepared by local.Then following is to prepare the hybrid fiber-reinforced rubber gasket by the main component of aramid fiber and glass fiber, and mechanical and resistance test are to be done to get the properties of this kind of gasket.Finally, carry out the actual pressure test with prepared samples to verify the sealing gasket's property and pressure distribution on the gasket's surface; integrated these verification process to ensure the local prepared gasket can be used to replace the imported sealing gasket in after-coming test processes, and achieve the purpose of gasket localization in end.