SU1247604A1 - Stamp-welded gate valve for pipeline - Google Patents

Abstract

The invention relates to stop valves, in particular, to valves with a large passage diameter for medium pressures, welded almost entirely from standard sheet and cylindrical products of a given thickness. The invention allows to increase the rigidity of the valve body with minimum metal consumption and high processability under high-volume production conditions. The valve has a housing that is extruded from at least two identical parts, a clamp 2 and a shutter 3. The shape of the case, together with the clamp 2, is made up of at least two spherical shells communicating with each other. the body is formed by the intersection of a flat box 12 of a para-lepiped shape with two symmetric shells of the hemispheres facing each other with convex surfaces, and the bottom element is made in the form of a semiring 10 with the surface of the ball-body and is connected to the bottom end of the ball Ohm the middle part of the body. i (lu 1

Description

one

The invention relates to shut-off fittings, in particular, valves with a large diameter of the prood for medium pressures, welded almost completely from standard fox and cylindrical rolled products, with a thickness of THICKNESS.

The aim of the invention is to increase the stiffness of the valve body with a minimum of metal consumption and high processability in large-scale production conditions.

Figure 1 shows the valve assembly, the passage in the housing is blocked, a general view; figure 2 - valve from the main flange, a general view; on fig.Z - elements of the valve body in a perspective view; Fig. 4 shows a stamped member with symmetrical protuberances; Fig. 3 is a section A-A in Fig. 4, a stamped element with symmetrical extensions; Fig. 6 is a section B-B in Fig. 3, a stamped element with symmetrical convexes; 7 - valve housing without a middle flange assembly; Fig.8 is a variant of the design of the valve housing in the form of individual elements in a perspective view.

The valve of the stamp-welded contains a hollow body 1, the shape of which, together with the bowl-shaped crack 2, is made in the form of two spherical shells interconnected. The seal 2 is tightly connected to the housing 1 by means of middle flanges 3. B. In the inner cavity of the housing 1 there is a wedge-shaped die-welded gate 4, made in the form of two intersecting segmented bowls and connected to the spindle 3.

Fig. 1 shows a valve with a gate 4, which is located between the sealing surfaces of the inlet and outlet main pipes 6, i.e. the passage in the housing is 1. blocked. The other end of the spindle 5 is kinematically connected to the drive 7, which in turn is rigidly connected to the gate 2 of the housing 1 of the valve through the rack 8. The valve body 1 contains the middle part consisting of identical stamped parts 9, half ring 10 spherical surface and trunk pipes 6 with connecting flanges I. The shape of the middle part is made up of

476042

On parts 9, it represents the intersection of a flat box 12 of parallelepiped shape with two symmetric hemispherical shells 13 with radius R facing each other with convex surfaces (see Fig. 3). Protrusion formed by the transition of one hemisphere to another, attached to the body 1

to considerable stiffness. To add neither the body 1 of greater rigidity, the protrusion U as a component of the larger face of the box 12 of parallelepiped form, is radially radially R outwardly outward (see Fig. 6). The internal extension of the housing 1, which connects the spherical cavities on two opposite sides of the projections q, and on the other two sides, small faces of the flat box 12, is large enough to pass the bolt 4. The edges 5 of the parts 9 that are tied together are straightforward , and the lower and upper i edges

The 25 walls of the hemispheres are annular. The subsequent connection of the stamped parts 9 of the housing 1 is carried out by high-performance equipment for automatic welding, since the seams

30 14 welded joints from diametrically opposite sides of body 1 are straight, welds 13 with low curvature are almost straight, and the lines of intersection of the spherical part of body 1 and semiring 10 with trunk pipes .6 are annular, also convenient for mechanized and automated welding process.

40 Formed in conjunction with semiring 10, the spherical shell of the lower part of body 1 works well with high internal pressure in bodies with a large aisle, since

45 of the walls of the housing 1, an excessive pressure of the medium causes only a strain of stretching. Such a design of the valve body 1 with a small construction length formed after cutting

50 parts of a spherical shell (skirt) 16 with a segmented surface, subsequent installation in the holes of the nozzles 6 with connecting pieces 11 and welding them with the body I,

55 is not inferior in rigidity to cylindrical bodies. The curvature of the spherical surface of the half-ring 10 corresponds to the curvature of the spherical surface of the lower half (skirt) of the middle

parts of body 1, and the width of half ring 10 corresponds to the width of the middle part of body 1, enclosed between seams 17, made on curved intersection lines of trunk pipes 6 with the lower hemispherical shell (skirt) of the middle part of body 1. Half ring 10 is joined by welding the ends to the base the middle part. case 1 of the valve in the area of the joined edges S. Here, the seam 15 is located at a right angle to the weld seam 14 and divides it into two equal parts. Inside the housing 1, along the abutting straight line edges S of the stamped parts 9, are welded on each side along one rail 18 in the form of a six-faceted rod. The guide 18 provides in wedge valves the rolling motion of the wedge gate 4 along the vertical axis of the housing 1. In the housing 1 of the valve with the bolt 2 and the bar 8 in FIG. 8 (embodiment), the curve of the spherical surface of the semi-ring 10 corresponds to the curvature of the spherical surface of the bolt 2. Due to this, one stamp is required to stamp these elements. In addition, the cut off parts of the spherical shell 16 with segmented surfaces from the lower hemispherical shell of the middle part of the housing 1 are used as constituent elements of the shield 2, which contributes to the economical expenditure of the metal.

Claims (1)

1. A stamped valve for the pipeline, comprising a housing, a hole 2476044 from at least two. parts, a cover and a shutter mounted in the housing are about the same, so that, in order to increase rigidity, the shape of the housing in conjunction with the shank is made at least in the form of two communicating with each other spherical shells, the shape of the middle part of the body 10 is formed by the intersection of a flat box of parallelepiped shape with two symmetric shells of the hemispheres facing each other with convex surfaces, and the lower element is drawn in the form of a semiring with the surface of a spherical belt and connected. ends with the lower end of the middle part of the body. 2, Latch pop. 1, distinguished by the fact that the half ring is connected to the base of the body in the area of the joined edges. 3, Gate valve according to claims 1 and 2, characterized in that they are joined 25 between them, the edges of the middle part of the body are straight. 4, Gate valve according to Claims I and 2 of tons, so that the width of the half-ring corresponds to the width of the middle 30 of the body, which is enclosed between the intersection lines of the main branch pipes with the lower hemispherical shell. 35 5. Z.dvizhka on PP. 1, 2 and 4, characterized in that the curvature of the spherical surface of the half-ring corresponds to the curvature of the spherical surface of the cover and the curve of the upper and lower hemispheres c) of the body. J -eight FIG. FIG. 2 17 15 17 FIG. 7 B-6 8 fig, 6 FIG. five Editor A. Dolinich. Compiled by M. Koltsov Tehred I.Gaydosh Proofreader A.Zimokosov Order 4105/35 Circulation 880 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, st. Project, 4