WO2015053656A1

WO2015053656A1 - Ball valve

Info

Publication number: WO2015053656A1
Application number: PCT/RU2014/000065
Authority: WO
Inventors: Павел Эдуардович МЕЛЬНИКОВ
Original assignee: Павел Эдуардович МЕЛЬНИКОВ
Priority date: 2013-10-09
Filing date: 2014-01-27
Publication date: 2015-04-16
Also published as: EA201301098A1; UA106933U

Abstract

The invention relates to heating and water supply systems. Provided with an annular groove which extends along a shoulder and lies on the axis of a second connecting pipe, a valve housing is provided with a straight passage having a round cross-section and an internal shoulder, and with two connecting pipes, the axes of which together form a right angle. A blind plug is sealingly secured, by means of a detachable connection, in the second connecting pipe and has, on its inner face, a seat and an annular groove. In the annular grooves there are installed annular seals, which mate with the outside surface of a closure element. The spherical closure element, provided with a channel, is mated with the end of a rod to enable rotation such that one opening of the through channel is kept open into the passage on one side of the shoulder and the opening into the passage on the other side of the shoulder is closed off by the continuous outer surface of the closure member. The invention makes it possible to broaden the range of available pipe closure means by means of a compact and easily manufacturable design for a ball valve which is suitable for functioning with fluid under pressure in pipes and permits repairs without needing to be disconnected from the pipe.

Description

Ball valve Application area

The invention relates to heating systems and water supply of buildings and structures, and specifically to a ball valve used as shutoff valves installed in a pipeline of a cold or hot water supply network, a gas network, including a compressed air network for industrial purposes, in a pipeline or another technological function and transporting liquid or gas. A ball valve in accordance with the invention can be implemented as an independent product of pipe fittings, or be an integral part of a combined product of pipe fittings, for example, a valve with a filter, a valve with a filter and a pressure reducer, a manifold with a valve and the like. Prior art

Known ball valve comprising a housing with a straight round channel and a cross section in the cross section, the axis of which is orthogonal to the axis of the direct channel, a ball locking element with a through direct channel, a rod fixed with a seal to rotate in the housing pipe, a plug made with a through hole and mounted threaded with a seal in the housing in the continuation of its through hole of the direct channel of the housing (CN 202884091 U, IPC F16K 5/06, 04/17/2013).

The direct channel of the housing from the side opposite to the location of the plug is made with a threaded section for connecting a ball valve to the pipeline. A similar section has a plug on the other side of the ball valve. In the housing, in the cavity of the direct channel, a groove is made and a similar groove is made in the tube. O-rings are located in the grooves, between which the ball locking element is clamped when screwing the plug into the housing, which is located by the axis of the through direct channel along the axis of the direct channel of the housing. The end of the stem extending into the housing is paired with ball locking element for its rotation, which provides overlap of the direct channel of the housing when the location of the ball locking element with the axis of the through direct channel at a right angle to the axis of the direct channel of the housing. A handle in the form of a lever is fixed at the end of the stem protruding from the outside of the housing from the nozzle, which allows the stem to be rotated around its axis, and accordingly, the ball locking element, opening or closing the ball valve.

This design of a ball valve has found wide application in water supply and water heating systems, due to the high reliability of the valve, which virtually eliminates leakage and provides reliable channel shutdown.

The disadvantages of this popular design include the fact that for repair it is necessary to disconnect the valve from the pipeline, after which it is possible to remove the plug, remove the ball locking element and change the ring gaskets associated with it. In addition, a lever-mounted handle in the form of a lever rotates in a plane parallel to the axis of the housing, which, when several ball valves of the same design are installed in parallel, can create inconvenience for turning such a handle.

Known ball valve containing a housing, a ball locking element with a direct channel, a rod for turning this element, as well as a plug (CN 101 196244 A, IPC F16K 5/06, 2008).

The body of this known ball valve is made with sockets located on opposite sides on the same axis, with the ability to connect the ball valve to the pipeline, as well as two inclined holes located axially in the same plane passing through the axis of the nests mentioned above. One inclined hole continues in the housing and communicates at an angle with the cavity of one of the sockets, while the second socket communicates with an angular channel with this hole opening to it from the side. The second inclined hole continues until it intersects with the first inclined hole. The plug is installed with a seal in the second inclined hole and has a socket communicating with the end located inside the housing made in the cork side channel communicating with the angular channel. The first inclined hole is made with an inner step, on which the sealing ring rests; on the ring there is a ball locking element, which is pressed through the second sealing ring by a stopper.

The locking element is located in a direct channel along the axis of the socket end located inside the housing, and on the other hand, along the axis of the first inclined hole (where it is installed together with the plug), thus communicating with the first socket in the housing. This position corresponds to an open ball valve. The end of the rod inside the housing is interfaced with a ball locking element for turning it with a handle in the form of a lever mounted on the rod at the end outside of the housing. The rotation of the ball locking element 90 degrees corresponds to the overlap of the ball valve.

In this known solution, it is possible to replace the O-rings of the ball locking element without disconnecting the body of the ball valve from the pipeline. To do this, it is enough to disconnect the plug, remove it, and then the ball locking element and O-rings to replace with new ones. The housing in this solution is not compact because it has a rather complicated system of openings and is designed to work with a fluid medium under a pressure exceeding the pressure of domestic water supply and water heating networks.

SUMMARY OF THE INVENTION

The technical result consists in expanding the arsenal of means of shutoff valves of pipelines with a compact and technological design of a ball valve suitable for working in domestic water supply and water heating systems, that is, acceptable for working with fluid in pipelines under pressure corresponding to the pressure in such systems, a design that allows to repair a ball valve without disconnecting the product from the pipeline line, design, where the control rod rotates around an axis located at an angle to the axis of the pipeline line.

This technical result is achieved by a ball valve, which contains:

- a housing with a straight round channel in cross section with an internal protrusion and with two communicating cavities with a direct channel nozzles, the axes of which form a right angle between themselves;

- ball locking element with a through channel;

- a rod mounted with a seal rotatably in the first pipe of the housing;

- a blind plug fixed with a seal with a detachable connection in the second pipe and having a socket on the inner end of the cavity along the axis of the cavity of the second pipe, as well as an annular groove located along the edge of the inlet of the socket.

An annular groove is made in the housing, passing along the protrusion in the direct channel of the housing and lying together with the annular groove in the plug on the axis of the cavity of the second nozzle, and in the annular groove of the housing and in the annular groove of the plug, ring seals are conjugated to the outer surface of the ball locking element installed in the housing and associated with the rod end passing into the housing for rotation with the possibility of keeping the location of one hole of the through channel open in the direct channel of the housing from one side to the inside of the protrusion and overlapping of the hole in the straight channel of the housing with a part of the continuous outer surface of the ball locking element on the other side of the inner protrusion or opening the second hole of the through channel in this part of the direct channel of the housing when the ball locking element is rotated.

In the best embodiment of the invention, the axis of the nozzles lie in the same plane with the axis of the direct channel of the housing and are inclined to it at an angle of 45 degrees each.

Also in the best embodiment of the invention, the inner protrusion of the direct channel of the housing lies in the perpendicular axis direct channel of the plane passing through the point of intersection of the axes of the nozzles.

The through channel of the ball locking element may be in the form of a right angle, the sides of which correspond to the axes of the holes of this channel.

The ball valve may include a handle in the form of a lever mounted on a rod end protruding from the housing for rotation.

The second pipe may be made with a portion of the internal thread, through which a blind plug is fixed in it with a portion of the external thread. The implementation of the invention

The possibility of implementing a technical solution is confirmed by a specific example of a ball valve as an independent product of pipeline valves, a longitudinal section of which is presented in figure 1.

The ball valve comprises a housing 1, a ball locking element 2, a stem 3, and a blind plug 4.

In the housing 1 a straight round channel 5 is made in cross section with an internal protrusion 6 and two communicating cavities with a direct channel, nozzles 7, 8, the axes of which form a right angle between themselves. Ball locking element 2 is made with a through channel 9.

The rod 3 is fixed with a seal by a ring 10, pressed by a plug 11, with the possibility of rotation in the first pipe 7 of the housing 1.

The blind plug 4 is detachably attached to the external thread portion 12 and is secured to the internal thread portion in the second nozzle 8 with sealing rings 13, 14. The blind plug 4 has a socket 15 on the inner end of the cavity (hole) of the second nozzle 8, as well as an annular groove 16 located along the edge of the inlet of socket 15.

In the housing 1, a similar annular groove 17 is made, passing along the protrusion 6 in the direct channel 5 of the housing 1 and lying together with the annular groove 16 in the plug 4 on the axis of the cavity of the second pipe 8. The annular grooves 16, 17 are in the form of a right angle, that is, each formed by a cylindrical surface and an annular flat surface mating at right angles.

In the annular groove 17 of the housing 1 and in the annular groove 16 of the plug 4, annular seals 18 are mounted, conjugated with the outer surface 19 of the ball locking element. 2 installed in the housing 1 and mating with the end 20 of the rod 3 extending into the housing 1 with the possibility of maintaining the location of one hole 21 of the through channel 9 open in the direct channel 5 of the housing 1 on one side 22 of the inner protrusion 6 and overlapping the hole 23 in the direct channel 5 of the housing 1 by the part of the continuous outer surface 19 of the ball locking element 2 on the other side 24 of the inner protrusion 6 or the opening of the second hole 25 of the through channel 9 into this part (i.e. the other side 24 of the inner protrusion 6) of the direct channel 5 of the housing 1 p and turning the ball valve element 2.

The axis of the nozzles 7, 8 lie in the same plane with the axis of the direct channel 5 of the housing 1 and are inclined to it at an angle of 45 degrees (angular) each. Perhaps the location of the nozzles 7, 8 axes at different angles while maintaining the condition that between these axes form a right angle. The inner protrusion 6 of the direct channel 5 of the housing 1 lies in the plane perpendicular to the axis of the straight channel 5 passing through the intersection point of the axes of the nozzles 7, 8, but this condition may not always be satisfied depending on the angles of the axes of the nozzles 7, 8. The through channel 9 of the ball locking element 2 has the shape of a right angle, the sides of which correspond to the axes of the holes 21, 25 of this channel 9 (inlet holes 21, 25 into the channel 9). The holes 21, 25 may not be round, and the channel may not have the shape of an angle, but another, for example, the shape of an arc. A handle 27 in the form of a lever is fixed on the end 26 of the rod 3 protruding from the housing 1. Such a handle 27 may not be present when operating the ball valve using a removable key. Instead of a handle 27 in the form of a lever, a device of a different design can be used, for example, a round handle for turning the rod 3. The example embodiment of the invention is not exhaustive. Other embodiments of the invention are possible, corresponding to the scope of patent claims. In particular, as noted above, a ball valve may not be an independent product of pipe fittings, as shown in an example embodiment of the invention, but be combined with a filter valve, a valve with a filter and a pressure reducer, a manifold with a valve and the like, combined .

All parts of the ball valve, made in accordance with the present invention, are made by known technologies from materials known for use in structures of this purpose.

Claims

Claim

1. Ball valve containing

a case with a straight round channel in the cross section with an internal protrusion and with two communicating cavities with a direct channel nozzles, the axes of which form a right angle to each other,

ball locking element with a through channel,

a rod fixed with a seal rotatably in the first pipe of the housing,

a blind plug fixed with a seal with a detachable connection in the second nozzle and having a socket on the inner end of the cavity along the axis of the cavity of the second nozzle, as well as an annular groove located along the edge of the inlet of the socket,

while in the housing an annular groove is made, passing along the protrusion in the direct channel of the housing and lying with the annular groove in the tube on the axis of the cavity of the second pipe,

and in the annular groove of the housing and in the annular groove of the tube, ring seals are installed that are conjugated to the outer surface of the ball locking element installed in the housing and mated with the rod end passing into the housing for rotation, with the possibility of keeping the location of one hole of the through channel open in the direct channel of the housing with one side of the inner protrusion and overlapping the holes in the straight channel of the housing with a part of the continuous outer surface of the ball locking element on the other side of the inner protrusion or opening a channel through the second opening in this part of the forward channel body when turning the ball valve element.

2. The crane according to claim 1, characterized in that the axis of the nozzles lie in the same plane with the axis of the direct channel of the housing and are inclined to it at an angle of 45 degrees each.

3. The crane according to claim 2, characterized in that the inner protrusion of the direct channel of the housing lies in the perpendicular axis of the direct channel of the plane passing through the point of intersection of the axes of the pipes.

4. The valve according to any one of paragraphs 1 to 3, characterized in that the through channel of the ball locking element has the shape of a right angle, the sides of which correspond to the axes of the openings of this channel.

5. The crane according to claim 4, characterized in that it contains a handle in the form of a lever, mounted on the end of the stem protruding from the housing for rotation.

6. The crane according to claim 5, characterized in that the second pipe is made with a portion of the internal thread, on which a blind plug is fixed in it with a portion of the external thread.