Production technology of longitudinal single welding line all-welded ball valve
An all-welded ball valve and manufacturing process technology, applied in valve devices, cocks including cut-off devices, engine components, etc., to avoid leakage hazards and improve safety performance.
Active Publication Date: 2015-08-05
SUZHOU GAS EQUIP & VALVES MFG
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Problems solved by technology
[0004] The purpose of the present invention is to solve the above-mentioned problems existing in the prior art, to provide a manufacturing process of a longitudinal single-seam full-welded ball valve, and to solve the problem of ensuring the welding quality and structural strength of the ball valve
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[0013] The purpose and advantages of the present invention will be shown in detail through the following preferred embodiments in conjunction with the non-limiting description of the accompanying drawings. implementations, all fall within the scope of protection of the present invention.
[0014] Such as figure 1 Shown is a sectional view of the overall structure of the longitudinal single-seam full-welded ball valve of the present invention. It can be seen from the figure that the ball valve is composed of a valve stem 6, a valve seat 3, a positioning shaft 4, a ball 2, a valve stem seat 5 and two symmetrically split valve bodies 1, and the valve stem seat 5 is welded to the spliced and welded valve body The top, positioning shaft 4 is welded to the bottom of the welded valve body, and the ball 2 is assembled in the valve seat 3 and assembled into the combined valve body. The ball is axially positioned by the positioning shaft and the stem seat and moves with the stem dri...
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The invention discloses a production technology of a longitudinal single welding line all-welded ball valve. The longitudinal single welding line all-welded ball valve is composed of a valve rod, a valve seat, a positioning shaft, a ball body, a valve rod seat and two symmetrical and separate valve bodies, wherein the valve rod seat is welded on the tops of the two jogged and welded valve bodies, and the positioning shaft is welded at the bottoms of the two jogged and welded valve bodies. The production technology of the longitudinal single welding line all-welded ball valve is characterized by firstly assembling the ball body, the valve seat and the valve body together, positioning the ball body in a center position of the ball valve through a positioning pin, completing center joint welding in a connection portion of the two valve bodies, performing nondestructive inspection on the center joint, and then trepanning the valve bodies corresponding to the valve rod seat and the positioning shaft, assembling the valve rod, the valve rod seat and the positioning shaft after competing trepanning, and competing welding among the valve rod seat and the valve, the positioning shaft and the valve bodies. By adopting the production technology of the longitudinal single welding line all-welded ball valve, continuous welding is used on each strip welding line, and therefore weld defects caused by intersection weld are avoided, and safety performance of the ball body is improved.
Description
technical field [0001] The invention relates to a ball valve, in particular to a manufacturing process of a fully welded ball valve with a longitudinal single seam, and belongs to the field of processing technology transformation. Background technique [0002] The longitudinal single weld is farthest from the valve seat, avoiding the influence of valve body welding heat on the valve seat, and the stress is much lower than that of the double weld structure. Eliminates all potential leakage hazards and has the best safety performance. [0003] Such as figure 1 As shown, since the longitudinal single weld seam is in the longitudinal center of the ball valve, and the valve stem, stem seat, and positioning shaft are also at this position, the general method is to assemble the left and right valve bodies first, and process the valve stem on a boring machine. Seat hole, positioning shaft hole, then assemble the valve stem, valve stem seat, positioning shaft, first weld the valve ...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B23P15/00F16K5/06
CPCB23P15/001F16K5/06
Inventor 孔新明徐利民周欣华张红军
Owner SUZHOU GAS EQUIP & VALVES MFG