Composite diaphragm group of fan shaft coupling and preparation method thereof

Abstract

The invention provides a composite membrane set of a fan coupler and a preparation method of the composite membrane set. The composite membrane set comprises titanium alloy membrane sets and composite rubber membranes, and the composite rubber membranes are stacked on the two sides of the titanium alloy membrane sets at intervals. The titanium alloy membrane sets comprise a plurality of titanium alloy sub-membranes. Each titanium alloy sub-membrane comprises, by mass, 1.5%-2.6% of aluminum, 0.8%-1.4% of iron, 0.2%-0.32% of silicon, 0.3%-0.45% of vanadium, 0.01%-0.06% of carbon, 0.4%-0.6% of copper, 0.3%-0.5% of tin, 0.05%-0.12% of scandium, 0.05%-0.12% of molybdenum, 0.03%-0.16% of cobalt, nitrogen smaller than 0.01% and the balance titanium and inevitable impurity elements.

Description

technical field [0001] The invention relates to a diaphragm group of a shaft coupling, in particular to a multi-layer composite diaphragm group suitable for a coupling of a wind power generator and a preparation method thereof. Background technique [0002] The special flexible coupling for the high-speed shaft of the wind turbine is used in the high-altitude engine room on land or at sea (about 75m above the ground or sea surface), and is used to connect the high-speed shaft of the wind power gearbox and the main shaft of the generator to transmit motion and torque. Preparation errors, installation errors, deformation after loading, and temperature changes cause axial, radial, and angular offsets, which cause the two axes connected by the coupling to produce different degrees of relative displacement. If the relative displacement is serious, it will Additional loads and even severe vibrations are caused on the input shaft, output shaft, bearings and couplings. The vibratio...

AI Technical Summary

Problems solved by technology

The reason is that the single sub-diaphragm cannot effectively disperse the stress, and the carrying capacity of the diaphragm is ignored while pursuing the compensation capacity, or the compensation capacity of the diaphragm is ignored while pursuing the carrying capacity. Due to the limitations of structure and material, some sub-diaphragms are difficult to balance their compensation ability and bearing capacity

[0004] In terms of materials, the diaphragms used at this stage can be roughly divided into: 1. Cold-rolled stainless steel sheets or aluminum diaphragms, stacked into one or more groups, connected between the driving shaft and the driven shaft through connecting bolts, although The strength is high, but the toughness is not good, and the metal diaphragm is affected by the ambient temperature, humidity and cavitation, and it changes slowly under the working condition, the performance decreases, and fatigue fracture occurs under the action of alternating load; 2. Rubber material, For example, the diaphragm made of nitrile rubber has good corrosion resistance and weather resistance, but the existing diaphragm made of nitrile rubber is very easy to age, fatigue and break in the environment of large pressure changes and reciprocating vibration. Moreover, the diaphragm made of pure rubber material is difficult to meet the comprehensive requirements of temperature resistance, pressure resistance and fatigue resistance.

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