RU2451855C2 - Multifunction pipe fitting assembly - Google Patents

Abstract

FIELD: mechanical engineering.

SUBSTANCE: multifunction pipe fitting assembly comprising a body with inlet and outlet fittings, a spindle-operated sluice, and one of the fittings has a cavity which incorporate a swing-check gate seat. The swing-check gate seat is fixed with a ring nut and supplied with an external slot with a groove towards a gasket field of the seat which comprises an arm axially connected with a plate.

EFFECT: production of the high-reliability multifunction pipe fitting assembly.

4 dwg

Description

The invention relates to mechanical engineering, namely to valve engineering, and can be used in process pipelines to control the medium.

Known multifunctional valve-gate unit, designed to work without readjustment in different modes of check, shut-off, shut-off and control valves (see patent RU 2238465 C2, F16K 1/20), consisting of a housing with outlet and inlet nozzles, the last of which is equipped a saddle interacting with the plate through a rocker mechanism associated with a bellows, on the base of which a spindle controlled by a flywheel acts from the inside.

The disadvantages of the known device include the low reliability of the unit, due to the fact that in case of failure of the sealing surface of either the plate or the seat, all the functions performed by the valve fail.

Also known is a multifunctional block of pipe fittings (see patent CN 201103707 Y, B01D 35/04, F16K 15/03), a prototype comprising a housing with different diameters of the inlet and outlet nozzles, the larger of which is mounted on a wall of the housing on a swivel bracket plate, interacting with sealing fields with response fields made in the housing, a cover with a spindle controlled by the flywheel located therein.

The disadvantages of this device include a low degree of maintainability, due to the fact that to replace a failed plate, it is necessary to replace the entire unit.

The technical problem solved by the invention is the creation of a multifunctional block of pipe fittings with a high degree of maintainability.

The problem is solved in that the multifunctional block of pipe fittings comprises a housing with inlet and outlet nozzles, a shutoff member controlled by the spindle, and a check valve is placed in one of the nozzles, and a groove is made in the inlet, outlet, or both nozzles, which has a backstop installed with a sealing element, and a backstop secured, for example, with an annular nut that interacts with the backstop seat provided with an annular groove with a groove made in a hundred the seat sealing field in which the bracket is mounted, connected by an axis to the plate.

Figure 1 shows a longitudinal section of a multifunctional block of pipe fittings; figure 2 - callout I in figure 1; figure 3 is a section along aa in figure 2; figure 4 is a variant of figure 1.

The multifunctional block of pipe fittings consists of a housing 1 with an inlet pipe 2 and an outlet pipe 3, a shutoff member 4 controlled by a spindle 5. In the groove 6 of the inlet pipe 2, a check valve is installed, consisting of a seat 7, with an outer annular groove 8 with a groove made in the side of the sealing field of the seat, in which the bracket 9 is connected, connected by the axis 10 to the plate 11. The seat 7 is fixed in the groove 6 of the outlet pipe 3 with a ring nut 12 and sealed with respect to the pipe by an elastic element 13. Multi-function cial unit pipeline valve operates as follows.

When the locking element 4 is raised (whether it is a wedge in a wedge gate valve, or a gate in a gate valve, or a ball plug in a ball wedge, etc.) and when the medium is conveyed along arrow B, the plate 11 opens by the energy of the conducted medium, turning on axis 19, passing the flow through the valve of the pipe fittings and the outlet pipe 3.

If the flow suddenly changes, for some reason, the plate 11 rotates on the axis 10 in the opposite direction until it contacts the seat 7 and blocks the reverse flow, thereby preventing damage to the entire previous technological system, including pump units.

After the shutter is activated, the shutter 4 is closed by means of the spindle 5, which ensures reliable closure of the process pipeline.

When you open the shutter 4, the unit is again ready for operation.

When the check valve is located in the bore of the outlet pipe, the multifunctionality of the block does not change.

Thus, due to the fact that the check valve is placed in the groove of the inlet pipe or outlet pipe, or shutoff valves, either a wedge or slide gate valve, or a ball or plug valve, or shut-off and control valves, and fixed with a ring nut, the degree of maintainability of the multi-function block is increased pipe fittings, due to the fact that in case of failure of the backstop by unscrewing only one part, the ring nut, you can replace the backstop with a working one, which undoubtedly creases the degree of maintainability multipurpose pipeline valve block.

Claims (1)

A multifunctional valve assembly comprising a housing with inlet and outlet nozzles, a spindle-controlled shut-off element, and a groove is made in one of the nozzles, in which a back-lock seat is located, characterized in that the back-lock seat is secured with an annular nut and provided with an external groove with a groove made in the direction of the sealing field of the saddle, in which the bracket is placed, connected by an axis to the plate.

Images