German amr hydraulik seals, amr hydraulik models, amr hydraulik prices

amr hydraulik seals can be divided into two main categories: static seals and dynamic seals. Static seals mainly include gasket seals, sealant seals, and direct contact seals. Based on working pressure, static seals can be further divided into medium-to-low pressure static seals and high-pressure static seals. Medium-to-low pressure static seals commonly use gasket seals made of softer materials with wider widths, while high-pressure static seals use metal gaskets made of harder materials with very narrow contact widths. Dynamic seals can be divided into two basic types: rotary seals and reciprocating seals. Others are classified based on whether the seal contacts the components moving relative to it, and can be divided into contact seals and non-contact seals; based on the seal and contact position, they can be divided into circumferential seals and face seals, with face seals also known as mechanical seals. Centrifugal seals and spiral seals in dynamic sealing achieve sealing by imparting energy to the medium during machine operation, hence they are sometimes referred to as hydrodynamic seals.

amr hydraulik seal principles

A mechanical seal is a shaft sealing device that prevents leakage by maintaining contact between one or more pairs of faces perpendicular to the axis, which slide relative to each other under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism, supplemented by auxiliary seals. A typical mechanical seal structure consists of a stationary ring (static ring), a rotating ring (dynamic ring), an elastic element spring seat, set screws, a rotating ring auxiliary O-ring, and a stationary ring auxiliary O-ring. Anti-rotation pins are fixed to the gland to prevent the stationary ring from rotating. The rotating ring and stationary ring may also be referred to as compensation rings or non-compensation rings, depending on whether they have axial compensation capability.

amr hydraulik seal system composition

1) Seal chamber: In the past, seal chambers housing mechanical seals were stuffing boxes designed for soft packing seals. They are unsuitable for housing mechanical seals, not only because the dimensions are too small and the clearances too narrow, but also because the simple cylindrical shape is inappropriate. Standards for enlarged mechanical seal chambers have been established abroad. Additionally, companies such as Durametallic in the US and the Fluid Engineering Study Group in the UK are researching rational mechanical seal chamber designs. Their shapes should not only facilitate fluid flow and heat dissipation but also help remove solid particles, creating a favorable environment for the seal. 2) Volatile emission control system: In the past, attention was focused only on eliminating visible fluid leaks, neglecting the control of invisible volatile emissions, which leads to environmental pollution and poses risks to equipment and personnel. Organizations abroad, such as the Sealing Technology Committee of the Society of Tribologists and Lubrication Engineers (STLE) in the US, have established guidelines for controlling volatile emissions in rotating machinery, compressors, and screw systems with mechanical seals, including SP-30 (1994), SP-32 (1990), and SP-33 (1991). SP-30 is implemented in three stages. It clearly defines barrier fluids and buffer fluids, clarifying erroneous and confusing concepts. A barrier fluid is introduced between dual seals to completely block process fluid from leaking into the surrounding environment. The pressure of the barrier fluid is always higher than the pressure of the sealed process fluid. A buffer fluid is used between dual seals as a lubricant or buffer, and its pressure is always lower than the pressure of the sealed process fluid. 3) Auxiliary system integration: Mechanical seal auxiliary systems require integration of cooling, heating, and flushing systems. Pump circulation needs optimization, and issues such as condition monitoring systems are being studied and resolved. The API-682 standard specifies the integration of auxiliary systems. 4) Gas barrier seal system: In the past, liquid-barrier-liquid or liquid-barrier-gas configurations were common in barrier seal systems. To simplify bulky barrier liquid systems, barrier gases are now used to barrier liquids or gases. Spiral groove gas seals with barrier gas, floating bushings with barrier gas, etc., can be used in gas barrier seal systems to barrier gases and liquids.

amr hydraulik seal installation technical requirements

Mechanical seals are high-precision mechanical components, and their correct installation and operation significantly impact service life. We generally follow the standards specified by the Ministry of Petrochemical Industry. The technical requirements for the pump and the mating parts of the mechanical seal are as follows: 1) Shaft runout: Maximum not greater than 0.05 mm; 2) Rotor wobble: Not greater than 0.06 mm near the shaft sleeve at the dynamic ring seal location; 3) Axial shaft movement must not exceed ±0.5 mm; if a shaft sleeve is present, it must not be loose; 4) Coupling alignment error: For gear couplings, not greater than 0.08–0.10 mm (P2008C); for elastic couplings, not greater than 0.05–0.06 mm; (common practice for face runout<0.05, radial runout<0.10) 5) Concentricity tolerance of the gland (static ring seat) sealing spigot relative to the shaft centerline is 0.05 mm; perpendicularity tolerance of the surface contacting the gasket relative to the centerline is 0.03–0.05 mm. If these requirements are not met, the seal chamber must be machined; 6) The ends of the shaft sleeve where the dynamic ring seal is installed, and the ends of the gland (or housing) where the static ring seal is installed, should be chamfered and smoothed. 7) Exercise care when installing or removing mechanical seals. Do not use hammers or flat chisels to avoid damaging seal components. If scale prevents removal, clean thoroughly before disassembly. 8) If mechanical seals are used on both ends of the pump, coordinate during assembly and disassembly to avoid neglecting one side while attending to the other. 9) For mechanical seals that have been in operation, if gland loosening causes seal movement, the stationary and rotating ring components must be replaced. Do not simply retighten and continue use, as loosening alters the original operating trajectory of the friction pair, easily compromising the sealing integrity of the contact surfaces.

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