German hanno seals hanno models hanno prices

hanno seals can be divided into two main categories: static seals and dynamic seals. Static seals mainly include three types: gasket seals, sealant seals, and direct contact seals. According to working pressure, static seals can be further divided into medium-low pressure static seals and high-pressure static seals. Medium-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 as contact seals and non-contact seals based on whether the seal contacts the components moving relative to it; 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 seals achieve sealing by imparting energy to the medium during machine operation, hence they are sometimes called power seals.

hanno seal construction

The skeleton oil seal structure consists of three parts: the seal body, the reinforcing skeleton, and the self-tightening helical spring. The seal body is divided into the bottom, waist, lip edge, and sealing lip according to different parts. Typically, in its free state, the inner diameter of the skeleton oil seal is smaller than the shaft diameter, meaning it has a certain "interference fit." Therefore, after the oil seal is installed in the seal housing and on the shaft, the pressure from the seal lip edge and the contraction force of the self-tightening helical spring exert a certain radial clamping force on the shaft. After a period of operation, this pressure will rapidly decrease or even disappear, so the spring can compensate for the self-tightening force of the oil seal at any time.

hanno seal usage guide

1) When the gearbox lubricating oil volume is ≤7 liters, the addition amount per liter of lubricating oil is 20‐30ml; 2) When 7‐15 liters, the addition amount is 15‐20ml per liter of lubricating oil; 3) When >15 liters, the addition amount is 10ml per liter of lubricating oil; 4) Oil seals not in temporary use should be stored properly to prevent contamination with oil stains, dust, or exposure to sunlight. 5) When the shaft diameter wears into a "V" shaped groove, causing the contact pressure between the new oil seal lip and the shaft to drop and fail to seal oil, the displacement method can be used for compensation.

hanno seal maintenance

1) Control of shaft seal pressure: High shaft seal pressure can easily cause steam leakage from the shaft seal, leading to water ingress into the oil and deterioration of turbine oil quality. Excessively high shaft seal pressure will trigger the action of the equalizing box safety valve, wasting working fluid and damaging equipment. Too low shaft seal pressure may cause a drop in unit vacuum, allowing cold air to enter the shaft seal or even the cylinder, causing cooling of the shaft seal section or inside the cylinder, seriously threatening equipment safety. 2) Impact of abnormal shaft seal temperature on the unit: When the shaft seal temperature is too high, especially before unit startup, excessive heat will cause intense heating at the shaft end steam seal and rotor steam seal section, producing local stress concentration phenomena, thereby causing certain deformation. This may change the gap between the rotor and the cylinder, increase steam leakage from the shaft seal, increase differential expansion, and in severe cases, cause stationary-to-rotating part friction. When the shaft seal temperature is too low, the shaft end steam seal and rotor steam seal section will be cooled, similarly producing local stress concentration phenomena, changing the gap between the cylinder and the rotor, increasing steam leakage at the shaft end, and decreasing differential expansion. When the shaft seal temperature is too low, the shaft seal supply steam may carry water, causing water hammer in the shaft seal supply pipeline. In severe cases, this leads to water ingress into the turbine.

Weidou Intelligent Technology specializes in selling German hanno seals, hanno O-rings, hanno sealing strips, hanno pipe seals, hanno cable seals, hanno rubber seals, hanno mechanical seals, hanno gaskets, hanno oil seals, hanno shaft seals, hanno metal seals, hanno high-pressure seals, hanno spiral seals, hanno centrifugal seals, hanno sealing rings, hanno original imports from Germany. Welcome customers to inquire and order.