Fatigue damage evaluation device for nuclear turbine blade

Abstract

The invention belongs to the technical field of mechanical equipment fatigue damage assessment, and particularly relates to a nuclear turbine blade fatigue damage assessment device which comprises a supporting base and a first supporting rod, a vibration measuring device is arranged on one side of the upper portion of the supporting base, and one side of the interior of the vibration measuring device is connected with a transmission wire; a second supporting rod is bonded to the corner position of one side of the outer surface of the first supporting rod, a rotating shaft is rotationally connected to the tail end of one side of the outer surface of the second supporting rod through a support, and the fixed plates on the two sides are gathered and attached to the middle by rotating adjusting bolts screwed on the two sides of the interior of a fixed block; the fixing plates on the two sides can be well attached to one side of the outer surface of the blade, a plurality of balls are connected into the fixing plates in a rolling mode, the fixing plates are prevented from affecting rotating operation of the blade through the balls, and meanwhile after a worker holds the vibration measuring device by hand and conducts certain debugging, the other tail end of the transmission wire can be connected with the other end of the transmission wire. And clamping and fixing with the wire port are carried out.

Description

Technical field [0001] The present invention belongs to the technical field of fatigue damage assessment of mechanical equipment, and more particularly to the fatigue damage assessment device of nuclear power turbine blades. Background technique [0002] The steam turbine is one of the most important devices in the nuclear power plant. The steam turbine engine is also known as a steam turbine engine, and the high-temperature high pressure steam passes through the fixed nozzle into the accelerated airflow, so that the blade is contained. The rotor rotates, and doing work outside. Steam turbine is the main equipment of the modern fire power plant, also in the metallurgical industry, chemical industry, and ship power units. [0003] Steam turbine blades are important components of steam turbines. The staff needs to perform timed fatigue damage assessment of the blades, avoiding the leaves in the process of operation, brought a lot of trouble to the maintenance, and a large extent de...

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Problems solved by technology

[0003] The steam turbine blade is an important part of the steam turbine. The staff need to carry out regular fatigue damage assessment on the blade to avoid the breakage of the blade during operation, which brings a lot of trouble to the maintenance and greatly delays the operation of the steam turbine. The efficiency of the work, the staff will evaluate the fatigue damage of the steam turbine blades from many aspects. It is a common evaluation method to evaluate the amplitude of the blades during operation. By measuring the amplitude of the blades during operation, Judging whether the vibration flat rate of the blade is within the qualified range, inferring the degree of fatigue damage of the blade, but the existing vibration measuring instrument has a relatively simple external structure, and cannot be well fixed on the running blade for measurement

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