RU2615609C1 - Valve (options) - Google Patents

Abstract

FIELD: machine engineering.

SUBSTANCE: valve comprises a housing with an inlet, outlet pipes and saddle, a valve with seal, with a holder, fixed with a pin, with an inside groove. In the gate along the inside groove and the outer surface, grooves and holes are made; in a holder on the outer surface of the grooves and ribs on the inner surface, grooves and openings are made, and on the holder, an outer shell is installed with a gap with a flexible tendril and visor with a cylindrical surface contacting with a minimum clearance with the outer surface of the body seat, while in the internal shutter groove, a filter element is installed, and the shutter openings and holders are communicated with the gap cavity between the holder and the outer shell. A valve option is also provided.

EFFECT: reduction of the seal shutter and the body seat clogging with foreign particles being in the component during valve opening and closing.

2 cl, 4 dwg

Description

The invention relates to valve engineering, and in particular to valves for starting and cutting off the working fluid, which reduces clogging of the seal of the shutter and seat of the housing by foreign particles located in the component when the valve opens and closes. It can be used in mechanical engineering, for example in rocket technology.

Known shut-off valve (Dobrovolsky MV Liquid rocket engines, publishing house "Engineering", 1968, p. 239, Fig. 6.12a), comprising a housing with inlet and outlet nozzles, a seat with a sealing gasket, a shutter.

The disadvantage of this shut-off valve is the ingress of foreign particles in the component onto the gasket at the valve seat where the valve closes, which, when the valve is repeatedly actuated, increases the leakage of the component through the valve.

Known shut-off valve with an electromagnetic actuator (Dobrovolsky MV Liquid rocket engines, publishing house "Engineering", 1968, p. 241, Fig. 6.14), containing inlet and outlet fittings, lower and upper valves, sealing girdle, rod.

A drawback of a shut-off valve with an electromagnetic actuator is the clogging of the sealing strip by foreign particles located in the control gas at the sealing place of the lower and upper valves, which leads to an increase in leakage of the control gas.

Known drain plug (Dobrovolsky MV Liquid rocket engines, publishing house "Engineering", 1968, p. 244, Fig. 6.19B), containing the body, valve plate, seat.

The disadvantage of the drain plug is the clogging of the seat by foreign particles located in the component at the place of the valve plate on the seat, which leads to increased leakage of the component.

Known valve (US patent No. 4844411 from 04/04/1989, IPC F16K 41/04) containing a housing, valve seat, locking disc, cover and stem.

The disadvantage of the valve is the ingress of foreign particles in the component between the valve seat and the locking disc at the time the valve closes, which leads to increased leakage of the component.

Known valve (RF patent No. 2489626 from 02.20.2012, IPC F16K 1/12, F16K 15/02 - prototype), comprising a housing with inlet and outlet nozzles, valve seat, valve with seal, with an internal groove.

The disadvantages of the valve, adopted as a prototype, include the tendency to clog the end surface of the seal with extraneous particles located in the component at the time of shutter landing on the seat.

The aim of the invention is to reduce the clogging of the end surfaces of the seal and the seat saddle with foreign particles located in the component at the time of opening and closing the valve and thereby increase the tightness of the valve at the shutter landing on the village village.

The problem is solved in that in the known valve comprising a housing with inlet and outlet nozzles and a seat, a shutter with a seal, with a clip secured by a pin, with an inner groove, according to the invention, grooves and openings are made in the shutter along the inner groove and outer surface, the cage on the outer surface is made of grooves and ribs, on the inner surface of the grooves and holes are made, the outer shell with a flexible antenna and a visor with a cylindrical surface is installed with a gap in contact it with minimum clearance with the outer surface of the housing seat, the internal bore of the shutter installed filter element, the groove and the shutter opening and cage communicated with a cavity clearance between the shell and the outer shell.

The second variant of the valve, the task is solved in that in the known valve comprising a housing with inlet and outlet nozzles and a seat, a shutter with a seal, with an internal groove, according to the invention, grooves, holes and ribs are made on the shutter along the internal groove and the outer surface an outer shell with a flexible antennae and a visor with a cylindrical surface in contact with a minimum gap with the outer surface of the seat seat is installed with a gap, while ltruyuschy member groove and the shutter opening communicated with the cavity clearance between the gate and the outer shell.

The proposed valve in the first embodiment is presented in figures 1 and 2 and in the second embodiment in figures 3 and 4, where:

1 - housing;

2 - a saddle of the body;

3 - the outer surface of the saddle body;

4 - shutter;

5 - consolidation;

6 - filter element;

7 - shutter grooves;

8 - shutter openings;

9 - outer shell;

10 - visor shell;

11 - a cylindrical surface of a peak;

12 - flexible truncated shell;

13 - ribs of the cage;

14 - clip grooves;

15 - clip hole;

16 - clip;

17 - a pin.

The valve comprises a housing 1, a seat of the housing 2, the outer surface of the seat of the housing 3, the shutter 4, a seal 5, a filter element 6 installed in the groove of the shutter, the grooves of the shutter 7, connected by the holes of the shutter 8, the outer shell 9 having a visor of the shell 10 and a cylindrical surface visor 11. On the outer shell 9 a flexible antennae of the shell 12 is made for locking the outer shell 9 relative to the shutter 4.

To press in the seal 5, a ferrule 16 is installed with grooves 14 and holes 15. To improve the centering of the outer shell 9, ribs 13 are made on the ferrule 13. The ferrule 16 is locked with a pin 17. According to the second version of the valve, the ribs 13 are made on the shutter 4.

The valve operates as follows. When the valve is opened, the shutter 4 together with the outer shell 9, the cylindrical surface of the visor 11, which contacts with the minimum clearance with the outer surface of the seat of the housing 3, moves from the seat of the housing 2, while under the influence of the pressure difference of the component on the shutter 4, the component passes through the filter element 6 , grooves and openings of the shutter 4 and the holder 16, falls into the cavity formed by the outer shell 9 and the holder 16.

For the valve according to the second embodiment, the component passes through the filter element 6, the grooves and openings of the shutter 4, and enters the cavity formed by the outer shell 9 and the shutter 4.

The filtered component, guided by the visor of the shell 10, falls on the ends of the saddles of the housing 2 and seals 5 and cleans them of foreign particles by the filtered component.

With further movement of the shutter 4 and the outer shell 9 from the saddle of the housing 2, the cylindrical surface of the visor 11 of the shell 9 loses contact with the outer surface of the saddle of the housing 3, the pressure drop of the component on the shutter decreases. The reduced component flow through the filter element 6, guided by the visor of the shell 10, washes the end face of the seal 10, preventing foreign particles from sticking to the end of the seal 5. This position of the shutter 4 is maintained throughout the entire operation of the LRE.

When you turn off the liquid propellant shutter 4 returns to its original position. The increasing pressure difference of the component, flowing through the gate through the filter element 6, cleans the end face of the seal 5 from foreign particles and before the valve closes completely, when the cylindrical surface of the visor 11 of the outer shell 9 comes into contact with the outer surface of the seat of the housing 3, clears the ends of the saddle of the housing 2 and seals 5 from foreign particles. Since the use of the valve is planned in rocketry, its parts are made of the following materials:

steel 07X16H6 - for housing 1, shutter 2, cage 16, pin 17;

steel 12X18H10T - for the outer shell 9,

ftoroplast-4 - for compaction 5,

rubber mixture IPR-1319 - for seal 5 (for the valve in the second embodiment).

Thus, the application of this invention allows to reduce the clogging of the end surfaces of the seal 5 and the seat of the housing 2 by foreign particles located in the component at the time of opening and closing the valve, and thereby increase the tightness of the valve at the seat of the seal 5 of the shutter 4 on the seat of the housing 2.

Claims (2)

1. The valve, comprising a housing with inlet and outlet nozzles and a seat, a shutter with a seal, with a clip secured by a pin, with an internal groove, characterized in that grooves and holes are made in the shutter along the inner groove and the outer surface, and the hollow on the outer surface grooves and ribs are made, grooves and holes are made on the inner surface, an outer shell with a flexible antenna and a visor with a cylindrical surface in contact with a minimum gap with the outer surface is installed with a gap the seat of the housing, while the filter element is installed in the inner groove of the shutter, the grooves and openings of the shutter and cage are in communication with the cavity of the gap between the cage and the outer shell. 2. A valve comprising a housing with inlet and outlet nozzles and a seat, a shutter with a seal, with an internal groove, characterized in that grooves, holes and ribs are made in the shutter along the inner groove and outer surface, and the outer shell with a gap is installed with a gap antennae and visor with a cylindrical surface in contact with a minimum gap with the outer surface of the seat of the housing, while the filter element is installed in the inner groove of the shutter, the grooves and openings of the shutter communicate with the cavity of the gap between the shutter and the outer shell.

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