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Construction site processing technique of large-size integral cylindrical value

A processing technology and a barrel valve technology, which is applied in the field of large-scale integral barrel valve site processing technology, can solve the problems of the large barrel valve being unable to meet the transportation requirements, difficult to manufacture, assembling wrong teeth, etc., so as to save equipment procurement costs, reduce costs, and simplify The effect of craftsmanship

Inactive Publication Date: 2012-08-15
HARBIN ELECTRIC MASCH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Large cylinder valves currently adopt a split structure, which is mainly because the overall large cylinder valve cannot meet the transportation requirements
Cylinder valves are ring-shaped components. During the manufacturing process, split-flap cylinder valves need to be assembled, disassembled, positioned, and assembled accurately. During the processing process, it is easy to have wrong teeth and out-of-tolerance assembly due to deformation of the workpiece after processing, which brings difficulties in manufacturing.
The integral cylinder valve does not have the above problems, especially the process is simple, but it also brings corresponding manufacturing problems, that is, the construction site needs to solve the transportation problem, and the construction site needs to solve the processing equipment and adopt necessary technology and methods

Method used

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  • Construction site processing technique of large-size integral cylindrical value
  • Construction site processing technique of large-size integral cylindrical value
  • Construction site processing technique of large-size integral cylindrical value

Examples

Experimental program
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Embodiment Construction

[0024] (1) After the two valves that have been roughly machined in the factory are welded into an integral cylinder valve at the construction site, the overall weld seam flaw detection and annealing are carried out, and machining is carried out after passing the test;

[0025] (2) Install the machine tool platform for barrel valve processing on the rotary table, and install the barrel valve processing column and rear counterweight device on the platform;

[0026] (3) Lift eight supporting piers, and place adjustable shims to support the cylinder valve. After the cylinder valve is pre-welded with the pressure plate and adjusted, the workpiece is tightened with the jacking wire on the bracket, and fixed with the pressure assembly;

[0027] (4) Rough turning and finishing turning for cylinder valves: the processing parts are: upper plane, inner and outer circles, upper sealing surface, and partial lower sealing surface;

[0028] (5) Install the support mold for processing the bar...

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Abstract

The invention discloses a construction site processing technique of a large-size cylindrical value of a water turbine. The technique method finishes the processing of the parts of the cylindrical valve under construction site conditions through special construction site processing equipment and instruments. The technique comprises the steps of: fixing the workpiece, and rotationally processing the inner circle and plane of the cylindrical valve through the equipment; rotating the workpiece on a chuck work table, fixing the excircle and plane of the workpiece through the equipment, and developing a universal tool set instrument to realize integral construction site processing of the cylindrical valve; and processing the shafts and radial holes on the parts of the cylindrical valve and the local surface of the cylindrical valve by mounting a milling head on the excircle processing equipment. The technique disclosed by the invention has the advantages of novel and unique processing technique, simple and reasonable technique, controllable processing quality, high precision and the capability of improving the production efficiency.

Description

technical field [0001] The invention discloses a large integral cylinder valve construction site processing technology. Background technique [0002] The hydraulic turbine cylinder valve is mainly used to seal the water for maintenance of the unit and temporarily seal and cut off the water flow. Large cylinder valves currently adopt a split structure, which is mainly because the overall large cylinder valve cannot meet the transportation requirements. Cylinder valves are ring-shaped components. During the manufacturing process, split valve cylinder valves need to be assembled, disassembled, positioned, and assembled accurately. During the processing process, it is easy to have wrong assembly teeth and out-of-tolerance dimensions due to deformation of the workpiece during processing, which brings difficulties in manufacturing. The integral barrel valve does not have the above problems, especially the process is simple, but it also brings corresponding manufacturing problems,...

Claims

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Application Information

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IPC IPC(8): B23P15/00
Inventor 黄海玉孙树勋
Owner HARBIN ELECTRIC MASCH CO LTD
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