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Large length-width ratio hollow-out type fixing guide vane

A technology for fixing guide vanes and water turbines, which is applied in the fields of hydropower generation, mechanical equipment, engine components, etc., can solve the problems of increasing manufacturing and installation costs, high costs, and heavy weight of the fixed guide vanes by integral casting, and achieves reduction of difficulty, weight, and cost. The effect of reducing material cost

Inactive Publication Date: 2015-04-22
HARBIN ELECTRIC MASCH CO LTD
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  • Claims
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AI Technical Summary

Problems solved by technology

For the fixed guide vane of the seat ring of a large water turbine, the integrally cast fixed guide vane can certainly ensure sufficient rigidity and strength, but the integrally cast fixed guide vane has a large weight and high cost, and needs to be processed after casting. Manufacturing, transportation and site installation costs are reduced

Method used

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  • Large length-width ratio hollow-out type fixing guide vane

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Embodiment Construction

[0014] Such as figure 1 As shown, the present invention provides a novel large-length-width-ratio hollow fixed guide vane with simple and reasonable structure, good rigidity, high strength, material saving, and easy manufacture. Compared with the hollow fixed guide vane, it includes an upper petal body 2, a lower petal body 1 and several ribs 3, and is characterized in that: a rib 3 is arranged between the upper petal body 2 and the lower petal body 1, and the rib plate 3 and the lower petal body Body 1 is welded and connected by fillet weld 5, and the fillet of fillet weld 5 is not less than one-third of the thickness of the thinnest base metal. Rib 3 and upper petal body 2 are welded and connected by plug weld 4, and plug weld 4 The number of columns is the same as the number of ribs 3, and the number of plug welds 4 in each column is not less than 2 / m. The upper petal body 2 and the lower petal body 1 are connected by groove weld 6, and the groove weld 6 The depth of the u...

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Abstract

The invention provides a novel large length-width ratio hollow-out type fixing guide vane with the simple and reasonable structure, the good rigidity and the high strength. The large length-width ratio hollow-out type fixing guide vane is characterized in that ribbed plates are arranged between an upper vane body and a lower vane body. The ribbed plates are in welded connection with the lower vane body through fillet welds. The ribbed plates are in welded connection with the upper vane body through plug welds. The upper vane body is in welded connection with the lower vane body through groove welds. According to the large length-width ratio hollow-out type fixing guide vane, raw material is greatly saved, the manufacturing cost is lowered, and meanwhile the needed rigidity and strength for fixing the guide vane is guaranteed. After welding, by means of the polishing, a transition fillet is obtained, the manufacturing period is shortened, the manufacturing cost is lowered, the material is saved and the manufacture is simple.

Description

technical field [0001] The invention belongs to the field of design and manufacture of large water turbines, in particular to a novel seat ring fixed guide vane. Background technique [0002] The fixed guide vane is an important component of the seat ring, which not only plays an important supporting role, but also has a certain flow guiding effect, so it needs sufficient rigidity and strength. For the fixed guide vane of the seat ring of a large water turbine, the integrally cast fixed guide vane can certainly ensure sufficient rigidity and strength, but the integrally cast fixed guide vane has a large weight and high cost, and needs to be processed after casting. Manufacturing, transportation and site installation costs are covered. Contents of the invention [0003] The invention provides a novel large aspect ratio hollow fixed guide vane with simple and reasonable structure, good rigidity, high strength, material saving and easy manufacture. The technical solution of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03B3/18
CPCF03B3/18F05B2240/121Y02E10/20
Inventor 吕胜海张兴宇乔宏来邱希亮阎海滨
Owner HARBIN ELECTRIC MASCH CO LTD
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