RU2750405C1 - Flow control valve - Google Patents

Abstract

FIELD: flow parameters regulating devices.

SUBSTANCE: flow control valve refers to devices for regulating the parameters of the flow of working media and can be used in equipment for the gas, oil, chemical, power, metallurgical and coal industries. The flow control valve contains housing with a regulating element having inlet and outlet pipes with through holes and movable and stationary regulating teeth, made of a streamlined shape, ending in a wedge and located along the outer part of the flow. The regulator passage is symmetrical in cross-section in the form of a multi-beam star with the possibility of narrowing towards the center in the process of shutting off the flow. On the lateral sides of the fixed teeth, inserts are made in the form of seals, consisting of two symmetrical angular profiled chevrons with a round steel spring inserted between them.

EFFECT: invention provides reliable sealing of the gap between the sides of the regulating teeth, which leads to a decrease in losses due to the sealing of the regulator valve.

1 cl, 7 dwg

Description

The invention relates to a device for regulating the parameters of flows of working media and can be used in equipment for the gas, oil, chemical, energy, metallurgical and coal industries.

Known "Flow control valve", see patent RU No. 2 681 726 C1, IPC F16K 5/12, priority from 05/03/2018, publ. 12.03.2019. This flow control valve comprises a body with a regulating element having inlet and outlet pipes with bores and regulating teeth that are streamlined and end in a wedge. In this case, the control zone in the cross section has the shape of a multi-beam star.

The disadvantage of this valve is that sufficient sealing of the gap between the lateral sides of the movable and fixed teeth is not ensured. This leads to losses in the flow of the fluid.

For the prototype, the "Flow control valve" described in patent RU No. 2 682 468 C2, IPC F16K 3/03 was selected; F16K 31/54, priority from 18.08.2017, publ. 02/18/2019. The valve contains an actuator, a housing with a regulating element having inlet and outlet pipes with through holes and movable and stationary regulating teeth located along the outer part of the flow, all teeth are streamlined and end with a wedge, the regulator passage is symmetrical in cross section in the form of a multi-beam star with the possibility of narrowing towards the center in the process of blocking the flow.

The disadvantage of this valve, like the previous one, is that sufficient sealing of the gap between the lateral sides of the movable and fixed teeth is not ensured. This leads to losses in the flow of the fluid.

The object of the present invention is to provide a flow control valve that provides reliable sealing of the gap between the sides of the movable and fixed teeth, which ensures the sealing of the valve of the regulator.

The technical result is that in the proposed flow control valve containing a body with a regulating element having inlet and outlet pipes with through holes and movable and stationary regulating teeth, streamlined, ending in a wedge and located on the outer part of the flow, and the passage of the regulator is made symmetric in cross-section in the form of a multi-beam star with the possibility of narrowing towards the center during the flow blocking process, inserts in the form of seals are made on the lateral sides of the fixed teeth, consisting of two symmetrical angular profiled chevrons with a round steel spring inserted between them.

This design of the flow control valve ensures reliable sealing of the gap between the lateral sides of the control teeth, which leads to a decrease in losses due to the sealing of the valve of the regulator.

FIG. 1 of the accompanying drawings shows a general view of a flow control valve with teeth in an open position, plan view;

in fig. 2 - the same, with the teeth in the closed position, plan view;

in fig. 3 - inserts are shown;

in fig. 4 - teeth of the flow control valve in the open position;

in fig. 5 - section a-a in Fig. four;

in fig. 6 - teeth of the flow control valve in the closed position;

in fig. 7 - section b-b in Fig. 6.

The flow control valve contains a housing 1, an inlet 2 and an outlet 3, fixed adjusting teeth 4, on the sides of which angular profiled chevrons 5 with a round steel spring 6 are installed between them, movable adjusting teeth 7.

The flow control valve works as follows.

Under the action of the rotational force, the movable control teeth 7 move along the legs of the fixed control teeth 4 that are symmetrical to them, moving towards the center and overlapping the throttling zone. In this case, under the influence of the spring 6, the angular profiled chevrons 5 are pressed against the side surfaces of the movable teeth 7.

This design of the flow control valve ensures that energy losses are reduced by ensuring reliable sealing of the gap between the lateral sides of the control teeth.

Claims (1)

A flow control valve comprising a body with a regulating element having inlet and outlet pipes with through holes and movable and stationary regulating teeth, streamlined and ending in a wedge, while the regulating teeth are located along the outer part of the flow, and the regulator passage is symmetrical in cross section in the form of a multi-beam star with the possibility of narrowing towards the center during the flow blocking process, characterized in that the inserts in the form of seals are made on the lateral sides of the fixed teeth, consisting of two symmetrical angular profiled chevrons with a circular steel spring inserted between them.

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