RU2758741C1 - Shutoff and control apparatus - Google Patents

Abstract

FIELD: engineering.

SUBSTANCE: invention relates to a shutoff and control apparatus. The apparatus is made in the form of the bonded body and cover with a central passage channel, wherein located between said body and cover inside are a fixed flat insert and a flap and a drive providing movement of the flap. The body therein includes: a flat liner attached to the end inner part of the body, and a sleeve installed in the entire central part of the insert and part of the body, and the flap is placed in guides attached to the body and includes: a flat insert attached to the end part thereof and located on the side of the rigid flat insert of the body, and a sleeve installed in the entire central part of the flat insert of the flap and part of the flap, and installed in the outlet channel of the body is a sleeve. The sleeve installed in the entire central part of the flat insert of the flap and part of the flap therein constitutes a control insert sleeve with a teardrop-shaped passage hole for the passage of a medium, and the fixed position of the passage hole of the control insert sleeve relative to the flap is provided by a pin.

EFFECT: reduction in the flow turbulence, erosion and noise.

4 cl, 6 dwg

Description

The proposed invention relates to shut-off and control devices and is intended for manual regulation of the flow (pressure) of the working medium by changing the flow area of the gate by changing the position of the damper, as well as shutting off the flow of the working medium in the pipeline.

The device can be used to regulate the flow of media, the properties of which meet the requirements of the technical characteristics of the device.

The device is installed on technological pipelines intended for transportation of a liquid or gaseous working medium, including combustible and flammable, used in the processes of petrochemistry and oil refining, production, transportation, storage and treatment of gas.

The device must be installed on the pipeline in accordance with the arrow indicating the direction of movement of the working medium.

Known control valve, see RF patent for utility model No. 194097. This valve is made in the form of a body consisting of two fastened halves, inside of which there are flat plates and a gate-damper plate, placed between the guide flat plates, and a drive that moves the damper. In this case, the flat plates are made in the form of a flange and a stationary insert and are placed in the main part of the body, which is closed by the body cover. Bushings are installed inside the casing cover, flange, damper, stationary liner and in the casing outlet channel. In this case, the sleeve of the housing cover is made with a smoothly decreasing cross-section of the hole passing into the hole of the sleeve of the flange, and the sleeve of the damper is made in the form of a cylindrical part with axial holes evenly spaced along the perimeter of the section.

The disadvantage of this device is the insufficient throughput of the valve due to the lack of a full-bore channel.

The closest source of information is utility model patent No. 199389. This patent describes a locking and regulating device made in the form of a fastened body and a cover with a central passage channel, between which a stationary flat liner and a damper are installed inside, and a drive that moves the damper, and a bushing is installed in the outlet channel of the body. In this case, the body includes: a flat liner attached to the end inner part of the body, and a bushing installed in the entire central part of the liner and part of the body, and the flap is placed in guides attached to the body, and includes: a flat liner attached to its end part and located on the side of the body liner, and a bushing installed in the entire central part of the flat liner of the damper and part of the damper.

The technical result is a decrease in flow turbulence, erosion, and noise.

The technical result is achieved by the fact that the locking and regulating device is made in the form of a fastened body and a cover with a central passage channel, between which a stationary flat insert and a damper are installed inside, and a drive that moves the damper. In this case, a stationary flat liner is installed in the body and attached to the end inner part of the body. The device also contains a bushing installed in the entire central part of the liner and part of the body, and the flap is placed in guides attached to the body, and includes: a flat liner attached to its end part and located on the side of a stationary flat liner of the body, and a bushing installed in the entire central part of the flat damper insert and part of the damper. A bushing is installed in the outlet channel of the housing. In addition, the sleeve installed in the entire central part of the flat liner of the damper and part of the damper is a control sleeve-liner that has a teardrop-shaped passage opening (in the form of two mating holes of larger and smaller sizes) for the medium passage, while the fixed position of the passage the holes of the adjusting sleeve-insert relative to the damper are provided with a pin.

The drop-shaped through hole should preferably be two mating holes: the upper one is triangular with an upper rounded corner, passing into the lower trapezoidal hole, with a rounded base of the trapezoid.

The bushings of the damper, body and body outlet, as well as the bushings of the damper and body, should preferably be made of a material with high hardness.

The cover and the actuator, which moves the damper, are attached to the body by means of nuts and studs.

The essence of the claimed technical solution is illustrated by drawings Fig. 1-6, where

in fig. 1 shows a main sectional view of the device in open position;

in fig. 2 shows a side view of the device (with the cover removed);

Fig. 3 shows a view of a control sleeve-insert with a teardrop-shaped through hole;

Fig. 4 shows two mating holes, teardrop-shaped holes: the upper one is triangular with an upper rounded corner, passing into the lower trapezoidal hole, with a rounded base of the trapezoid;

figure 5 shows a shutter;

Fig. 6 shows an enlarged part of the device in the part of the shutter, the regulating sleeve-insert, the sleeves and the pin.

The figures show:

1 - case;

2 - protective sleeve;

3 - insert;

4 - guide;

5 - damper;

6 - regulating sleeve-insert;

7 - damper insert;

8 - screw-rod;

9 - bushing;

10 - eye bolt;

11 - drive;

12 - pin.

The device consists of a control mechanism and a drive.

The regulating mechanism includes a housing 1, in which a fixed protective sleeve 2 with an insert 3 is installed. On the insert 3 between the guides 4 there is a regulating flap 5 with an adjusting insert sleeve 6 and an insert 7. In the groove of the valve 5 there is a screw-rod 8, which is a part a drive that moves the damper.

The fixed vertical movement of the shutter 5 is provided by the guides 4, fixed to the end of the body by bolts.

To protect the housing 1 and the mounting flange at the outlet of the device from erosion and abrasive wear, a bushing 9 made of an alloy with high hardness is located in it.

To protect the through holes from erosive and abrasive wear in the gate 5 and liner 7, there is a control liner 6 made of an alloy with high hardness, which has a drop-shaped through hole, which provides a special throughput characteristic of the working medium.

To protect the bore from erosion and abrasive wear, a protective sleeve 2 made of an alloy with high hardness is installed in the fixed insert 3 and in the bore of the housing 1.

For slinging during installation and dismantling on the pipeline, the device is equipped with eye bolts 10.

The drive 11 (Fig. 2) is installed in the side opening of the housing 1.

Device operation

The principle is to change the flow area of the device by changing the position of the regulating flap 5 with a fixed regulating sleeve-insert 6 and insert 7 installed in it relative to the fixed protective sleeve 2 and insert 3.

The design of the control sleeve 6 is shown in FIG. 3-4. The regulating sleeve-insert 6 has a cylindrical shape, has a through hole (tapering towards the outlet) of a drop-shaped shape for the passage of the medium. The cone K (Fig. 3) provides the direction of the flow of the medium through the drop-shaped orifice, excluding the turbulence of the flow, erosion, and increased noise. The fixed position of the bore of the regulating sleeve-insert 6 relative to the flap 5 is provided by the pin 12 (Fig. 6), which is installed in the groove P of the protective sleeve-liner 6 (Fig. 4) and the groove P2 of the flap 5 (Fig. 5), which ensures strictly vertical position of the drop-shaped bore of the protective liner 6.

Region B of the regulating sleeve-liner (Fig. 4) is a triangular hole (isosceles acute-angled triangle) with an upper rounded corner and corresponds to the stage of opening the flow section of the regulating sleeve-liner 6 by 70% and provides regulation of the flow rate of the working medium, and the throughput corresponds micro-flow rate (from 0 to 1.6 cubic meters per hour for liquid), which can only be provided with throttling-type control devices.

Region B of the regulating sleeve-insert (Fig. 4) is a trapezoidal opening with a rounded base of an isosceles trapezoid corresponds to the subsequent stage of opening the flow section of the protective sleeve-insert 6 from 70% to 100% and provides regulation of the flow rate of the working medium, and the throughput corresponds flow rate (from 1.6 cubic meters per hour to 28 cubic meters per hour for liquid), which corresponds to the flow characteristics of gate-type regulating devices.

The originality and novelty of the design lies in the fact that the proposed regulating slide device is capable of performing the functions of regulating the flow (pressure) of the working medium and providing in the closed position the VI class of tightness according to GOST 9544-2015 in the initial period of operation and not less than IV class of tightness according to GOST 9544- 2015 throughout the remaining service life.

Provides a micro-flow in the control range from 0 to 70%, which is necessary for supplying chemical reagents (for example, methanol) to the gas transport pipeline, preventing hydrate formation in the cold season.

Provides metered supply of the working medium remotely in a specific algorithm and specified quantities, by transmitting an electrical signal to an electric drive.

In the proposed device, the regulating gate type, due to the original design of the protective sleeve-insert 6, two functions are combined:

- the possibility of regulation in a micro-flow variant (from 0 to 1.6 cubic meters per hour for liquid), which corresponds to the regulation range of throttling devices and, if necessary, cutting off the flow of the working medium;

- the possibility of regulating the flow rate of the medium, the value of which corresponds to the normal control range (from 1.6 cubic meters per hour to 28 cubic meters per hour for liquid), corresponding to the control range of gate-type regulating devices.

In the proposed device, the regulating gate type, virtually eliminated the turbulence of the flow of the medium, erosion, increased noise due to the guide cone K in the through hole of the control sleeve-insert 6.

Claims (5)

1. A locking and regulating device, made in the form of a fastened body and a cover with a central passage channel, between which a fixed flat liner and a damper are installed inside, and a drive that moves the damper, while a stationary flat liner is installed in the housing and attached to the end inner part of the housing, the device also contains a bushing installed in the entire central part of the liner and part of the housing, and the flap is placed in guides attached to the housing, and includes: a flat liner attached to it of the end part and located on the side of the stationary flat liner of the body, and the bushing installed in the entire central part of the flat liner of the damper and part of the damper, and a bushing is installed in the outlet channel of the body, characterized in that the bushing is installed in the entire central part of the flat liner of the damper and part the damper is a control sleeve-insert, which has a teardrop-shaped through hole for the medium passage, while the fixed position of the through hole of the control sleeve-insert relative to the damper is provided by a pin. 2. The device according to claim 1, characterized in that the teardrop-shaped through hole is two holes: the upper one is triangular with an upper rounded corner, passing into the lower trapezoidal hole, with a rounded base of the trapezoid. 3. The device according to claim 1, characterized in that the bushings of the damper, the housing and the outlet channel of the housing, as well as the liners of the damper and the housing are made of a material with high hardness. 4. The device according to claim 1, characterized in that the cover and the actuator that moves the shutter are attached to the body by means of nuts and pins.

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