RU65599U1 - LATCH - Google Patents

Abstract

The valve can be used as a locking device on pipelines transporting oil or industrial water, as well as for blocking the channels of wellhead fittings for fountain, pumping and injection wells in industrial oil production. The technical task is to increase the manufacturability of production, increase the wear resistance of the valve, reducing the effort on the drive mechanism. The valve comprises a housing consisting of two interconnected half-bodies 1, 2, between which an intermediate ring 3 is fixed, in the cavity of which a disk gate 4 with a sector cut, provided with sealing elements, and a ring gear 5 made in view of the sector of the ring with internal engagement and interacting with the drive shaft 7, the sliding bearing 6. The sliding bearing can be installed in a groove made in the intermediate ring or in the gate and in the gear nets or in the grooves made in the intermediate ring, in the gate and in the ring gear. The sliding bearing can be made in the form of a cut ring made of tape material, for example, from a fluoroplastic tape.

Description

The utility model relates to the field of petroleum and chemical engineering and can be used as a locking device on pipelines transporting oil or industrial water, as well as for blocking the channels of wellhead fittings for fountain, pump and injection wells in industrial oil production.

Known gate valve according to patent US 5284320, consisting of two half-bodies connected by a union nut. The connected half-bodies form a cavity in which the gate and the ring gear are placed. To facilitate rotation of the gate and ring gear, a sleeve is used. The gate is made in the form of a semicircle, the drive mechanism and the ring gear have a complex shape that allows you to change the position of the gate between the extreme points. The disadvantage of the valve is the complexity of the design and low-tech manufacturing of half-hulls, an asymmetrical drive mechanism and a ring gear.

Known gate valve according to patent RU 2286499, selected as a prototype, comprising a housing consisting of two interconnected half-bodies, between which an intermediate ring is fixed, in the cavity of which a sliding gate and a gear ring connected to the drive shaft. When the drive shaft rotates, the ring gear moves within the clearance. At the same time, the radial component of the force acting on the drive shaft side presses the ring gear to the intermediate ring. Then, the movement of the ring gear occurs together with the gate, the force from the ring gear also pushes the gate from the center and presses it against the intermediate ring. Uneven wear of the inner surface of the intermediate ring occurs. To prevent this, it is necessary to increase the hardness of the intermediate ring, for example, to produce heat treatment. In addition, due to an increase in the friction force, the force on the drive mechanism increases.

The technical problem to which the utility model is directed is to increase the manufacturability of manufacture, increase the wear resistance of the valve, and reduce the effort on the drive mechanism.

The technical result is achieved in a valve containing a housing consisting of two interconnected half-bodies, between which an intermediate ring is fixed, in the cavity of which a slide is arranged in the form of a disk with a sector cut, equipped with sealing elements, and a ring gear made in the form of a sector of the ring with internal gearing and interacting with the drive shaft, a sliding bearing. The sliding bearing can be installed in a groove made in the intermediate ring or in the gate and in the gear ring or in the grooves made in the intermediate ring, in the gate and in the ring gear. The sliding bearing can be made in the form of a cut ring made of tape material, for example, from a fluoroplastic tape.

The valve is shown in the figures:

figure 1 - valve assembly;

figure 2 - gate, ring gear, plain bearing;

Fig.3-5 - embodiments of a plain bearing.

Between the half-shells 1 and 2 (FIG. 1), an intermediate ring 3 is installed in the cavity of which a slide 4 is placed, made in the form of a disk with a sector cut-out 11, with ledges 12 made in it (FIG. 2), a gear ring 5, a sliding bearing 6. The gear ring 5 is made in the form of a sector of the ring with internal gearing and interacts with the drive shaft 7 through the counter gear 10, coaxial with the drive shaft, and is installed with a gap (not shown), which allows replacement during assembly.

The gate 4 on both sides is equipped with sealing elements 13 (figure 2), made, for example, of fluoroplastic, covering the working area of the interaction of the gate with the flow, installed in the groove recesses. The interaction of the gate 4 with the valve body 1, 2 occurs on the surfaces of the sealing elements 13.

The sliding bearing 6 can be made in the form of a continuous ring or in the form of a cut ring made of tape material, for example, from a fluoroplastic tape across the width of the intermediate ring 3 (figure 3). In addition, the sliding bearing 5 can be installed in a groove 8 made in the intermediate ring 3 (figure 4) or in the gate 4 and in the gear ring 5 (not shown) or in the grooves 8, 9 made in the intermediate ring in the gate and in the ring gear (Fig. 5; in the figures of Figs. 4, 5, the ring gear with the groove 9 made therein is not shown).

The valve operates as follows.

When the counter gear 10 rotates, the ring gear 5 moves within the gap, then the ring gear 5 interacts with the corresponding ledge 12 in the gate 4. The further movement of the ring gear 5 occurs together with the gate 4 between the extreme positions of the counter gear 10 in the sector cutout 11 of the gate.

The implementation of the ring gear 5 in the form of a separate part, not connected with the gate 4, and based on the sliding bearing 6 increases the manufacturability of the manufacture of the intermediate ring 3, the gate and the ring gear. The ring gear 5 self-aligns relative to the counter gear 10 on the drive shaft 7, which reduces gear wear.

The use of a sliding bearing 6 eliminates the heat treatment of the intermediate ring 3 to increase its hardness, and also eliminates the need to install the gate 4 on the axis of rotation, as in the prototype, since the self-centering of the gate and the ring gear 5 in the cavity of the intermediate ring 3. These factors also increase the manufacturability of the valve.

Thanks to the use of a sliding bearing 6, as well as the sealing elements 13, the force on the drive shaft 7 is reduced, which increases its service life.

Claims (9)

1. A valve comprising a housing consisting of two interconnected semi-bodies, between which an intermediate ring is fixed, in the cavity of which a slide gate and a gear ring interacting with a drive shaft are arranged, a sliding bearing. 2. The valve according to claim 1, characterized in that the sliding bearing is installed in a groove made in the intermediate ring. 3. The valve according to claim 1, characterized in that the sliding bearing is installed in a groove made in the gate and in the ring gear. 4. The valve according to claim 1, characterized in that the sliding bearing is installed in grooves made in the intermediate ring, in the gate and in the ring gear. 5. The valve according to claim 1, characterized in that the ring gear is made in the form of a sector of the ring with internal gearing. 6. The valve according to claim 1, characterized in that the gate is made in the form of a disk with a sector cut. 7. The valve according to claim 1, characterized in that the gate is equipped with sealing elements. 8. The valve according to claim 1, characterized in that the sliding bearing is made in the form of a cut ring. 9. The valve according to claim 1, characterized in that the sliding bearing is made of fluoroplastic.