Cavitation-resistant and energy-saving modification method of water turbine
An energy-saving transformation and anti-cavitation technology, which is applied to mechanical equipment, hydroelectric power generation, engine components, etc., can solve the problem of high cost of shutdown and maintenance, and achieve the effects of improving efficiency, high strength and toughness, and preventing corrosion
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[0122] The invention provides a water turbine anti-cavitation energy-saving transformation method, which includes the following steps:
[0123] Step 1: Do sandblasting treatment on the entire runner and blades, which requires Sa2.5 level;
[0124] Step 2: Use titanium-containing stainless steel inlay repair method or scrape coating nail-planting polyurethane elastomer method to repair the cavitation pits of the turbine runner, blade and draft tube lining;
[0125] The titanium-containing stainless steel inserting method in this step includes the following steps:
[0126] a. Clean the large cavitation pits that have been sandblasted;
[0127] b. Take a piece of paper and stick it on the cavitation pit, and draw the outline of the cavitation pit with a pen;
[0128] c. Make 321 titanium stainless steel spare parts according to the pattern drawn on the paper, the size of the spare parts should be smaller than the pattern to facilitate installation;
[0129] d. Use tapping method or tight fix...
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