UA5484U - Globe valve - Google Patents

Abstract

A globe valve has a metal housing and a branch pipe, in the channels of those there is installed a rotary spherical plug pressed with tightening rings and connected to the rod with handle to turn the plug. In the upper part of the housing there are provided a gasket chamber and opening for the support, and the plug is made with thin walls and configuration of its inner spherical surfaces goes from sphere, in radius, to ledges with right angle with respect to the axis of the plug.

Description

The useful model belongs to pipeline fittings, in particular, to ball valves, which can be used in pipelines transporting gas, air, oil, water and steam from a temperature of minus 307C to

The well-known ball valve according to the European patent Me0506 285, cl. E16K5Ю6, publ. 30.09.1992 contains a metal body with a channel for the passage of the fluid medium, in which a rotary closure element in the form of a body of rotation is fixed, which is supported by two support seals.

The locking element has a through-hole for the passage of the medium, while on the outer surface of the locking element there is a recess in which the element is movably fixed, by means of which, in turn, the locking element is connected to the rod drive for the transmission of torque.

The disadvantage of the known design is the unreliability of the removable connection of the locking element with the rod by means of an element located in the recess, the groove of which includes the end of the rod with additional teeth, key and slots.

The well-known ball crane according to the certificate of the Russian Federation for the utility model Me21632, class E16K5O4,

E16КБОб, publ. 27.01.2002 contains a cylindrical body, coaxially located in it sealing rings made of electrically insulating material, between which is placed a locking member in the form of a ball with a central hole, which is supplied by a rod, which is installed in the hole of the body and has a handle for turning.

Sealing rings are made with cantilever protrusions, and each cantilever protrusion along the length has a curvilinear profile that repeats the spherical shape of the covered surface of the ball.

The inner surface of one end of the housing has a threaded section, and the other is made in the form of a part of a cone with the apex in the direction of the nearest end, while an electrical insulating coating is applied to the conical surface.

The disadvantage of the known faucet is the lack of tightness during operation and a reduced service life, because the spherical shape on the cantilever protrusions of the sealing rings leads to wear of the closing body and to the destruction of the sealing rings.

The well-known ball crane according to the certificate of the Russian Federation for the utility model Me32850, kl. E16KUO6, publ. 27.09.2003 contains a metal body and a nozzle, in the channels of which a rotating spherical plug is installed, to which, in turn, the sealing and protective rings of the body are pressed.

A rod is connected to the plug and has a handle for turning through the pressure sleeve of the faucet.

Sealing rings are made of "Graflex" material.

Rubber rings are installed under the sealing rings from "Graflex", which determine the operation of the faucet up to a temperature of 5070.

We accept this design of the crane as a prototype.

The disadvantages of the prototype are as follows: - the complexity of the faucet design, because the pressure sleeve is installed between the body and the nozzle, which increases the dimensions of the faucet, - insufficient tightness of the faucet due to damage to the plug material, because when the faucet is opened, a gap is formed through which the flow of the working medium passes from at a high speed, creating cavitation, which destroys the sealing rings, at the same time, the tap is depressurized and its service life is sharply reduced.

The useful model is based on the task of improving the design of cast iron ball valves from the known state of the art by changing the configuration of the internal spherical surfaces of the plug, which ensures tightness and increases the service life of the valve by 1.5-1.8 times.

The solution to the given problem is provided by a ball valve, which contains a metal body and a nozzle, in the channels of which a rotating spherical plug is installed, which is pressed by sealing rings and connected to a rod that has a handle for turning, due to the fact that the upper part of the body is made of stuffing boxes the chamber and the hole for the stop, and the plug is thin-walled and the configuration of its internal spherical surfaces passes from the sphere

B along the radius B into ledges that have a right angle E with respect to the axis of the plug.

A union nut is installed in the packing chamber, through which the stem passes. To improve control of the crane, the stop is installed vertically to the body and the handle has a limit when turning in the 90" sector.

For the rigidity of the faucet structure, horizontally located stiffening ribs are made on the outer surfaces of the body and nozzle, which have a height of up to 11 mm and are rounded on the radius Vi, which makes it possible to use a thin-walled design of the body and nozzle.

To connect the housing and the nozzle together, they have facing flanges with mating holes, and the trunk flange of the housing has holes for connection to the pipeline (not shown).

To reduce the material capacity, the plug has a wall thickness of 3 mm and is made of corrosion-resistant material.

Stiffening ribs are made on the inner surface of the cork for rigidity of the cork structure.

To create full contact between the plug and the rod, a rectangular groove is made in the upper part of the plug, and in the same part of the plug, a local thickening of the material is made to the height of the entry of the rod into the groove.

The technical result that is achieved when using a useful model: - a ball shut-off gland flange valve was created, the body and nozzle of which are made of cast iron and have thin walls and stiffening ribs, and the spherical plug is made of thin-walled corrosion-resistant material with internal stiffening ribs, i.e. a faucet made strong and reliable during operation, - increased service life of the faucet - sealing fluoroplastic rings in the body are practically indestructible, because there is no pressure drop when the faucet is opened, i.e., on the inner surfaces of the stopper, right-angled ledges reduce the flow rate of the working medium , equalizing the pressure, which reduces cavitation at the moment of slot opening during tap control, - Increased contact of the plug connection with the stem, because the upper part of the plug has a rectangular groove and a local thickening of the material B, which ensures the strength of the connection and prevents crumpling due to the margin of safety, i.e then a thin-walled construction of a cork in the form of a strong box was created, which facilitates the control of the crane.

The claimed ball valve is explained by the following description and drawings, where:

Fig. 1, Fig. 2 - a model of a cast-iron ball valve, for example, for the ZOmm passage,

Fig. 3, Fig. 4 - ball valve in cross section,

Fig. 5, Fig. 6 - spherical plug made of corrosion-resistant material,

Fig. 7 - view A of Fig. 1, the body from the side of the main flange,

Fig. 8 - housing with a handle (handle) from the side of the main flange,

Fig. 9 - a cast-iron faucet body with a gland chamber and a hole for a stop,

Fig. 10 - removal | according to Fig. 9,

Fig. 11 - drawing II according to Fig. 9,

Fig. 12 - a stiffening rib of the body and a nozzle.

According to a useful model, the ball valve contains a cast iron body 1 and a nozzle 2, in the channels C and 4 of which a rotating spherical plug 5 is installed, which is pressed in the body 1 by sealing fluoroplastic rings 6 and connected to a stem 7, in the upper part of which a handle is installed 8 (handle) for turning (see Fig. 1,

Fig. 2, Fig. 3, Fig. 4).

Channels C and 4 in housing 1 and nozzle 2 serve for the input and output of the flow of the working medium. A nut 9 is installed on the handle 8.

On the outer surfaces of the body 1 and the nozzle 2, stiffening ribs 10 are made, which are located horizontally and have a height of up to 11 mm and rounding on the radius No (see Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 12).

Body 1 and pipe 2, which are made with thin walls and stiffening ribs 10, have facing flanges 11 and 12 with connected holes 13 for tightening them together using bolts 14 with nuts 15 (see Fig.

Fig. 1, Fig. 2, Fig. 3, Fig. 4).

The main flange 16 of the housing 1 has holes 17 for connection with the pipeline (not shown) (see Fig.

Fig. 3, Fig. 4, Fig. 7, Fig. 8).

In the upper part of the housing 1 of the crane, a stuffing chamber 18 and a hole 19 for installing a metal stop 20 are made nearby (see Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 9).

The stop 20 is installed vertically to the body 1 and limits the rotation of the handle 8 in the 90" sector (see Fig. 1, Fig. 2).

In the gland chamber 18, a rod 7 and sealing rings 21 are installed, which are held using a union nut 22 installed in the gland chamber 18 (see Fig. 3, Fig. 4, Fig. 9).

The rod 7 passes through the union nut 22 (see Fig. 1, Fig. 2, Fig. 3, Fig. 4).

Rings 21 are made of sealing material BR-1, which has elastic properties, high wear resistance and heat resistance (see application materials Me2003098642, date of submission 09/22/2003 in "Ukrpatent").

To ensure the tightness of the faucet, a fluoroplastic sealing ring is installed between the housing 71 and the nozzle 2, which has a cross section in the form of a one-sided wedge 23 with a surface at an angle of 15", located in the bore of the housing 1 (see Fig. 3, Fig. 4, Fig. 9 , Fig. 11 and patent of Ukraine Me47230, class E16915M12,

E169U15M10, publ. 04/15/2004).

To create a labyrinth seal with sealing rings 6 under the spherical plug 5, combs 24 at an angle of 30" are made in the body 1 and nozzle 2 of the faucet (see Fig. 3, Fig. 4, Fig. 9, Fig. 10 and Ukrainian patent Me47900, class

Е16КБОб, Е16КБ20, publ. 17.05.2004).

Spherical plug 5 is made of thin-walled corrosion-resistant material, for example, brass or stainless steel and has a wall thickness of 3-4 mm (see Fig. 3, Fig. 4, Fig. 5, Fig. b).

The configuration of the internal spherical surfaces of the plug 5 passes from the sphere B along the radius A to the ledges 25, which have a right angle a with respect to the axis of the plug (see Fig. 5, Fig. b).

Stiffness ribs 26 are made on the inner surface of the plug 5, which create the strength of the plug.

In the upper part of the plug 5, a rectangular groove 27 is made for a full contact connection with the rod 7, while the plug in the same part has a local thickening B of the material at the height of the entry of the rod 7 into the groove 27.

To save the faucet in warehouses or for transportation, the channels C and 4 of the body 1 and the nozzle 2 are closed with plugs 28, which excludes the ingress of dirt (see Fig. 4).

During the operation of the faucet, at the initial moment of opening the faucet, by turning the spherical plug 5 counterclockwise, a slit gap is formed in the housing 1, through which the flow of the working medium enters the through hole 29 of the plug 5 (see Fig. 5, Fig. b).

The ledges 25 in the plug 5 equalize the pressure force by reducing the flow rate of the working medium, which is extinguished, which reduces cavitation.

The flow of the working medium leaves the channel 4 of the nozzle 2 at a lower speed, and the fluoroplastic sealing rings 6 in the housing 1 are not subject to destruction and last longer, that is, the service life of the sealing rings 6 increases by 30905.

The declared utility model of the ball valve has high ergonomics and a longer service life compared to existing designs of ball valves and compared to cast iron valves, it has the same construction length, but its service life exceeds three times and completely replaces cast iron valves according to the parameters of the purpose .

Ball valves are economical in operation, because they do not require large costs for repairs. I - h ok 7 SHY mskezhtnh ka is E "

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Claims (11)

1. A ball valve, which contains a metal body and a nozzle, in the channels of which a rotating spherical plug is installed, which is pressed by sealing rings and connected to a rod that has a handle for turning the plug, which is distinguished by the fact that in the upper part of the body, a stuffing box is made and a hole for a stop, and the plug is made thin-walled and the configuration of its internal spherical surfaces goes from a sphere along the radius to ledges that have a right angle to the axis of the plug. 2. A faucet according to claim 1, which differs in that a union nut is installed in the gland chamber through which the stem passes. 3. Faucet according to claim 1, which is distinguished by the fact that the stop is installed vertically to the body and the handle has restrictions when turning in the 90" sector. 4. Faucet according to claim 1, which differs in that the outer surfaces of the body and the nozzle are made of horizontally located stiffening ribs. 5. Faucet according to claim 4, which is characterized by the fact that the ribs have a height of up to 11 mm and are rounded on the radius. b. Faucet according to claim 1, which is characterized in that the body and nozzle have opposing flanges with mating openings for connection. 7. The faucet according to claim 1, which is characterized by the fact that the main body flange has holes for connection with the pipeline. 8. Faucet according to claim 1, which differs in that the plug has a wall thickness of 3-4 mm and is made of corrosion-resistant material. 9. Faucet according to claim 8, which differs in that the inner surface of the plug has stiffening ribs. 10. Faucet according to claim 8, which is characterized by the fact that a rectangular groove is made in the upper part of the stopper for connection with the stem. 11. Faucet according to claims 8, 10, which differs in that the material is thickened in the upper part of the plug to the height of the entry of the rod into the groove.