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Water turbine runner chamber cylinder mould pressing method

A technology for runner chambers and water turbines, which is applied to mechanical equipment, engine components, machines/engines, etc. It can solve the problems of high splicing appearance quality requirements, difficulty in controlling deformation, and increased ring seams, and achieves the difficulty of shape correction and The time is shortened, the appearance quality is good, and the effect of reducing the ring seam

Inactive Publication Date: 2020-08-25
CHONGQING WATER TURBINE WORKS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The advantage of this method of multi-section cone-tube tailor welding is that the forming process of the cone-tube blank is simple and fast. However, this method has many circular seams, increases the consumption of welding materials, and is difficult to control deformation due to large welding volumes (especially for the control of deformation of the split-flap blank. important), and the problem that splicing requires higher appearance quality

Method used

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  • Water turbine runner chamber cylinder mould pressing method

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Embodiment 1

[0031] Embodiment 1: as figure 1 As shown, a method for molding the casing of a water turbine runner chamber, the method includes the following steps: 1) Installing the die; 2) Cutting the material; 3) Drawing a reference line; 4) Making a blank; 5) Inspection; 6) 7) Marking; 8) Inspection.

[0032] Wherein, in the step 1), the upper mold and the lower mold of the die-casting mold are installed on the press, and the installation steps are as follows: (1) first fix the fully fitted upper and lower molds firmly on the lower base; (2) then Push forward to align the upper base and fix it firmly; (3) Open the upper and lower molds, and align the two process backing plates in each direction; (4) Press the upper and lower molds, and press the two process backing plates until they are completely attached to the upper and lower molds; ( 5) Weld the process backing plate with the upper and lower molds respectively, and use flower welding.

[0033] Wherein, in the step 3), draw the pro...

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Abstract

The invention discloses a water turbine runner chamber cylinder mould pressing method. The water turbine runner chamber cylinder mould pressing method is characterized by comprising the following steps of firstly, mould arranging and pressing; secondly, discharging; thirdly, datum line marking out; fourthly, blank part manufacturing; fifthly, inspecting; sixthly, repair welding of defective portions and grinding; seventhly, marking; and eighthly, inspecting. The method has the advantages of being simple in process, convenient to operate and low in cost, the method is adopted for reducing circular seams, the welding amount is obviously reduced, welding materials are saved, after-welding deforming is small, the shape correcting and shaping difficulty and time can be greatly reduced, all positions of a machined cylinder are more uniform in thickness, and meanwhile, the appearance quality is better.

Description

technical field [0001] The invention relates to a casing of a runner chamber of a hydraulic turbine, in particular to a molding method for the casing of a runner chamber of a hydraulic turbine. Background technique [0002] At present, the runner chamber is the most important flow channel part of the turbine. It is a key component to restrict the water flow, increase the pressure in the flow channel, make the runner uniformly stressed, and improve the energy conversion rate of the unit. Its manufacturing quality is very important. The main structure of the runner chamber is composed of a cylinder, upper and lower flanges, ring ribs and vertical ribs. The inner cavity of the cylinder is a flow channel. Since the cylinder is a multi-curved surface structure, the blank making of the cylinder is particularly critical. The existing cylinder The manufacturing of multi-section cones is mostly realized by tailor welding; this method mainly includes the following steps: 1) The cyli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00
CPCB23P15/00F03B11/02
Inventor 周继东杨钢姚新舫刘亚军张华强
Owner CHONGQING WATER TURBINE WORKS