SU819475A1 - Formed-welded gate for pipeline - Google Patents

Description

(54) .STRAIN / I1PASSWARE PLATE FOR PIPELINE

one

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 well-known wedge stamped and welded valve, the body of which is made of two symmetric and identical parts, each of which is made with a semicircular recess, facing convexity outward, located above the hole for the main pipe above it. The cover and body of the valve in the cross section are flat-oval 1.

The disadvantage of this design is the unsatisfactory rigidity of the body, which is due to the fact that its lower part is made of a wedge with flat side surfaces. As a result, the hull structure cannot be used for large passage diameters.

The aim of the invention is to create such a die-welded gate valve with a large passage diameter for medium pressures, the casing of which would have maximum rigidity with minimum

metal consumption and high manufacturability in the conditions of large-scale production.

The goal is achieved by the fact that in a well-known die-cut valve for a pipeline, there is a housing made of two parts, a lid, a bolt in the cavity of the body, the shape of the body in conjunction with the cover is made in the form of two communicating spherical shells, and the shape of the middle part the body is formed by the intersection of a flat box of parallelepedoid shape with two symmetric shells of hemispheres facing each other with convex surfaces, and the lower element is made in the form of a semi-ring with a surface of ovogo the belt ends and is connected to the lower end face of the middle part of the housing.

The semi-ring is connected to the base of the case in the area of joined edges. The edges of the middle part of the body, which are joined together, are made straight.

The width of the half-ring corresponds to the width of the middle part of the body, enclosed between the intersection lines of main

branch pipes with the lower hemispherical shell.

The curvature of the spherical surface of the half-ring corresponds to the curvature of the spherical surface of the cover and the upper and lower hemispheres of the middle part of the body.

FIG. 1 shows a general view of the valve assembly (with a local section), the passage in the housing is blocked; in fig. 2 - a general view of the valve from the main flange; in fig. 3 - elements of the valve body in perspective view; in fig. 4 — stamped element, with symmetrical protuberances; in fig. 5 shows section A-A in FIG. four; in fig. 6 is a section BB in FIG. five; in fig. 7 - valve housing without middle flange assembly; in fig. 8 is a variant of the construction of the valve body as individual elements in asconometry.

The stamped gate valve comprises a hollow body 1, the shape of which, in combination with the cup-shaped lid 2, is made in the form of two spherical cavities communicating with each other. The cover 2 is tightly connected to the housing 1 by means of middle flanges 3. In the internal cavity of the housing there is a wedge-shaped welded plug 4, made in the form of two intersecting segmental shaped thickets and connected to spindle 5.

FIG. Figure 1 shows a valve with a locking member, which is located between the sealing surfaces of the inlet and outlet main pipes, i.e., the passage in housing I is blocked. At the other end, the spindle 5 is kinematically connected to the actuator 6, which in turn is rigidly connected to the lid 2 of the valve body via the rack 7. The valve body contains a middle part consisting of identical stamped elements 8, a semi-ring 9 with a spherical surface and main pipes 10 s. connecting flanges 11. The shape of the middle part, made up of halves 8, is the intersection of a flat box of parallelepiped shape with two symmetric hemispherical shells with radius R facing the other vypukly.mi other surfaces (see. Fig. 5). The protrusion a, formed as a result of the transition of one hemisphere to another, gives body 1 considerable rigidity. To give the body greater rigidity, the protrusion, as a part of the larger face of the box of parallelepiped shape, is made along the radius R by convexity outwards (see Fig. 6). The internal cavity of the housing 1, the connecting spherical cavities on two opposite sides of the protrusions a, and on the other two sides with faces of a flat parallelepiped, is large enough to pass the bolt 4. The edges b of the elements 8 that are tied together are linear.

and the lower and upper g edges of the walls of the hemispheres are annular.

The subsequent connection of the stamped elements of the housing 1 by welding also makes it possible to use

high-performance equipment for automatic welding, since the seams 12 of the welded joints on the diametrically opposite sides of the body are straight, the seams 13 of the low-curvature welded joints are almost straight, and the lines of intersection of the spherical part of the body and the semi-ring 9 with trunk pipes 10 are annular . Formed in conjunction with the semi-ring 9 spherical sheath (skirt) 14 bottom

parts of the body 1. The spherical surface of the semi-ring 9 corresponds to the curvature of the spherical surface of the lower half (skirt) of the middle part of the body 1, and the width of the half-ring corresponds to the width of the middle part of the body enclosed between

 the seams 15, made on the curved lines of intersection of the main pipes with the lower hemispherical shell (skirt) 14 of the middle part of the body 1. Semi-ring 9 is joined by welding with ends with

 the base of the middle part of the valve body in the area of the joined edges 6. At the same time, the shields 12 are located at a right angle to the weld seam 13 and divide it into two equal parts. Inside housing 1 along abutting straight line edges b stamped

0 elements 8 are welded on each side along one rail 16 in the form of a tetrahedral rod. The guide 16 provides in the wedge gateways a predetermined translational motion of the wedge gate 4 along the vertical axis of the housing 1. In the valve body with the lid and stand in FIG. 8 (embodiment), the curvature of the spherical surface of the half-ring corresponds to the curvature of the spherical surface of the cover 2.

Claims (5)

1. A stamped valve for the pipeline, comprising a housing made, 5 of at least two identical parts, a cover and a shutter mounted in the housing, characterized in that, in order to increase rigidity, the shape of the housing together with the cover is made at least JQ measure, in the form of two spherical shells communicating with each other, with the shape of the middle part of the body formed by the intersection of a flat box of parallelepiped shape with two symmetric shells of hemispheres facing each other 5 with convex surfaces, and the lower element is made in the form of a semiring with the surface of the bow belt and is connected by ends with a lower end of the middle part of the body. 2. Valve no p. 1, characterized in that the half ring is connected to the base of the body in the area of the joined edges. 3. Shutter on paragraphs 1, 2, characterized in that the edges of the middle part of the body joined together are made straight. 4. Shutter on paragraphs 1, 2, characterized by the fact that the width of the semiring corresponds to the width of the middle part of the body enclosed between the intersection lines of the trunk 8 of the 5th branch pipes with the lower hemispherical shell. 5. Gate valve according to paragraphs. 1, 2, 4, characterized in that the curvature of the spherical surface of the semiring corresponds to the curvature of the spherical surface of the cover and the curvature of the upper and lower hemispheres of the middle part of the body. Sources of information taken into account during the examination 1. US Patent No. 2868495, cl. 251-86, 1965. 1 Fig: 2. I j Fig-Z B / J i5 7 B :::