RU2744115C1 - Valve (versions) - Google Patents

Abstract

FIELD: valve industry.SUBSTANCE: invention relates to valve industry, specifically to valves intended for multiple actuation. In the disclosed valve consisting of a housing with an internal groove, a housing seat, inlet and outlet branch pipes, as well as a gate, a seal, a cartridge and a filter element, an elastic element is installed in the inner groove, a clamping element and a bushing with a seat and a hole, at that on the external and internal diameters of the bushing with the seat the sealing elements are made, and in the cage the internal channel is made. Inner groove is communicated via inlet with inlet branch pipe. Channel in the cage is made so that when the cage is in contact with the bushing with the saddle, the inlet and outlet branch pipes are communicated via the gap between the seal and the casing seat and the cage inner channel. Filter element is installed in inner channel made in cartridge. Elastic element is made in form of wave spring.EFFECT: invention provides damped closing of the gate and reduces clogging of its sealing surfaces with foreign particles, allows reducing leakage through the gate seal, increasing its service life.8 cl, 6 dwg

Description

The invention relates to the valve industry, in particular to valves designed to perform multiple operations. The invention provides damped closure of the shutter and reduces the clogging of its sealing surfaces by foreign particles. EFFECT: use of the invention makes it possible to reduce the leakage through the seal of the valve, to increase its service life, and also to reduce the water hammer in the supply lines after the valve is closed. The invention can be used in mechanical engineering, for example, in rocketry, including when operating under conditions of high working pressures and cryogenic temperatures.

Known is a sealing joint with an elastic edge (patent RU 2467231, class F16J 15/04, F16K 1/14) containing a rigid spherical locking body with a bellows element, a seat and a restraining ring.

The disadvantages of this sealing joint with an elastic edge are the impossibility of using the shutter on the saddle under shock landing conditions when performing multiple actuations and some manufacturing complexity.

Known pneumatic valve gate (patent RU 2459128 cl. F16K 1/36, F16K 1/46, F16K 25/00) containing a body, body seat, valve, seal, movable seal, elastic elements and stop.

The disadvantages of this design of the pneumatic valve gate are the impossibility of using it in cryogenic temperatures and the possibility of clogging the gate seal when performing multiple valve actuations.

Known valve shutter (patent RU 2143625 class F16K 1/36) containing a housing with a seat, a piston with a locking lug, a sleeve with a flange, a channel. The disadvantage of this design of the valve closure is the impossibility of its use in conditions of cryogenic temperatures.

Known normally closed solenoid valve (US patent 8678341 B2 cl. F16K 31/02, F16K 31/12), containing a housing, an electromagnet, an armature, a shutter, a spring, a piston and a damper chamber. The disadvantage of the solenoid valve is the possibility of clogging the shutter when performing multiple valve actuations.

The closest to the invention is a valve design containing a body with inlet and outlet nozzles, a body seat, a gate, a seal, a cage, cage ribs, an outer casing, a casing visor, a filter element (patent RU 2615609, class F16K 25/02).

The disadvantages of this valve are the complexity of the design, caused, among other things, by the need to ensure a small clearance between the body seat and the outer shell, as well as the absence of a damped fit of the gate on the body seat.

The objective of the proposed invention is to simplify the design of the valve, increase the service life of the valve gate due to its dampened closure, as well as reduce the clogging of the sealing surfaces of the gate by foreign particles.

The task is solved in the following way.

In a known valve, consisting of a body with an internal bore, a body seat, inlet and outlet pipes, as well as a shutter, a seal, a cage and a filter element according to the invention, an elastic element, a compression element and a bushing with a seat and a hole are installed in the internal groove. the outer and inner diameters of the sleeve with the seat are made of sealing elements, and the inner channel is made in the cage. The internal bore communicates with the inlet pipe through a hole. The channel in the cage is designed in such a way that, when the cage contacts the sleeve with the seat, the inlet and outlet nozzles are communicated through the gap between the seal and the body seat and the inner channel of the cage. A filter element is installed in the inner channel made in the cage. The elastic element is made in the form of a wave spring.

The second version of the valve solves the problem by the fact that in the known valve, consisting of a body with an internal groove, a body seat, inlet and outlet nozzles, as well as a shutter, a seal, a cage and a filter element according to the invention, a protrusion is made at the end of the cage; an elastic element, a clamping element and a sleeve with a seat and a hole, while sealing elements are made on the outer and inner diameters of the sleeve with a seat.

When the protrusion made in the cage contacts the sleeve with the saddle, the communication of the inlet and outlet nozzles is carried out through an internal groove and a hole. A filter element is installed at the end of the sleeve with the seat at the place where the hole is made. The elastic element is made in the form of a wave spring.

The proposed valve according to the first embodiment is shown in Fig. 1-3, according to the second embodiment in FIG. 4-6, where:

1 - case;

2 - internal groove;

3 - cavity from the side of the inlet pipe;

4 - hole;

5 - body saddle;

6 - shutter;

7 - seal;

8 - clip;

9 - filter element;

10 - bushing with a saddle;

11 - sealing elements;

12 - clamping element;

13 - elastic element;

14 - inner channel;

15 - ledge;

A - bushing saddle.

The valve consists of a body 1 with an internal groove 2, a cavity on the side of the inlet nozzle 3, a hole 4 and a seat of the body 5, as well as a gate 6, a seal 7, a yoke 8, a filter element 9, a sleeve with a seat 10, sealing elements 11, a clamping element 12, an elastic element 13, an inner channel 14 (FIGS. 1-3) and a protrusion 15 (FIGS. 4-6).

The valve shown in FIG. 1-3 works as follows. In the initial position, the valve is open (Fig. 1) the flow rate of the component from the inlet nozzle 3 enters the outlet nozzle of the body 1 passing between the seat of the body 5 and the cage 8. When the command to close the valve is given, the shutter 6 first moves until the cage 8 lands on the seat A, the sleeve with the seat 10 (Fig. 2), as a result, between the seat of the body 5 and the seal 7, the component that has passed through the "L-shaped" channel 14 between the ribs of the cage 8, previously cleaned through the filter element 9, moves. This reduces the likelihood of foreign particles getting under the seal 7 at the time of the valve 6 landing on the body seat 5, while, due to the directional movement of the working medium flow, cleaning the seal 7 and the body seat 5 from foreign particles, the ingress of which on the sealing surfaces is possible when the valve is open.

Further movement of the valve 6 until the seal 7 lands on the seat of the body 5 (Fig. 3) occurs together with the sleeve with the seat 10. This reduces the speed of movement of the valve 6, dampening its fit on the seat of the body 5, since to move the sleeve with the seat 10 in the inner groove 2, it is necessary to displace the working fluid from this groove through hole 4 and deformation of the elastic element 13. Damped movement of the shutter 6 at the end of the working stroke allows to reduce the dynamic loads on the sealing surfaces of the shutter 6, as well as to reduce the water hammer in the supply lines.

After the start of the movement, the sleeve with the seat 10 stops contacting the clamping element 12. When the valve is opened under the action of the force from the elastic element 13, it moves back to contact with the end face of the clamping element 12.

The valve shown in FIG. 4-6 operates in a similar construction to the valve shown in FIG. 1-3, while after the landing of the projection 15 on the saddle A of the holder 8 between the seat of the body 5 and the seal 7, the component, previously cleaned with the help of the filter element 9, is displaced from the inner groove 2 through the hole 4.

Claims (8)

1. A valve containing a body with an internal groove, a body seat, inlet and outlet nozzles, as well as a shutter, a seal, a cage and a filter element, characterized in that an elastic element, a clamping element and a bushing with a seat and a hole are installed in the internal groove. In this case, sealing elements are made on the outer and inner diameters of the sleeve with the seat, and an inner channel is made in the cage. 2. A valve containing a body with an internal groove, a body seat, inlet and outlet nozzles, as well as a shutter, a seal, a cage and a filter element, characterized in that a protrusion is made at the end of the cage, an elastic element, a clamping element and a bushing are installed in the internal groove with a seat and a hole, while sealing elements are made on the outer and inner diameters of the sleeve with the seat. 3. The valve according to claim 1, characterized in that the inner groove communicates with the inlet pipe through the hole. 4. The valve according to claim. 1, characterized in that the channel in the cage is made in such a way that when the cage contacts the sleeve with the seat, the inlet and outlet nozzles are communicated through the gap between the seal and the housing seat and the inner channel of the cage. 5. The valve according to claim. 1, characterized in that a filter element is installed in the inner channel made in the cage. 6. The valve according to claim 2, characterized in that when the protrusion made in the cage contacts the sleeve with the seat, the inlet and outlet nozzles are communicated through an internal groove and a hole. 7. The valve according to claim 2, characterized in that a filter element is installed at the end of the sleeve with the seat at the place where the hole is made. 8. Valves according to PP. 1 and 2, characterized in that the elastic element is made in the form of a wave spring.

Images