RU199389U1 - Locking and regulating device - Google Patents

Abstract

A locking and regulating device is proposed, made in the form of a fastened body and a cover, between which a fixed flat insert and a shutter are installed inside. In this case, the body includes: a flat insert attached to the end inner part of the body, and a sleeve installed in the entire central part of the insert and a part of the body, and the flap is placed in guides attached to the body, and includes: a flat insert 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.

Description

The proposed utility model refers 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 control 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 the 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 preparation 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 gate regulating device, see RF patent No. 57409 dated 10.10.2006. This device has a housing with a bypass for the passage of a fluid, equipped with suitable means for mounting on the pipeline and guides in the form of plates made of material resistant to corrosion and / or abrasion, which are fixed in the housing practically at right angles to the geometric axis of the specified channel and have windows corresponding to this channel in shape and flow area, a vane plate made of material resistant to corrosion and / or abrasion wear, which is placed between the guide plates in a sliding fit, and a suitable drive for reciprocating the movement of the vane plate along the guide plates between the positions "closed "And" open ". In this case, the bypass channel of the body is lined with sleeves, which are at least partially made of material resistant to corrosion and / or abrasive wear, are tightly mounted inside the body, serve as stops for guide plates and are fixed against axial displacement by thrust threaded bushings, and the gate plate has in the upper part there is a window for the passage of the fluid.

The disadvantage of this device is the impossibility of working under conditions of high pressure drop.

The closest technical solution is a 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 plate-damper, 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 technical result is an increase in the service life of the device at a high throughput.

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, and a bushing is installed in the outlet channel of the body. In this case, the body includes: a flat insert attached to the end inner part of the body and a sleeve installed in the entire central part of the insert and a part of the body. The damper is located in guides attached to the body and includes: a flat insert attached to its end part and located on the side of the body insert, and a bushing installed in the entire central part of the flat insert of the damper and part of the damper. In this case, the bushings of the damper and the body form a single central passageway.

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

The cover is attached to the body with nuts and studs.

The drive that moves the damper is made in the form of a handle that moves the screw-rod and a damper attached to it. Where the stem screw contains a pointer showing the valve flow rate on the actuator scale.

In this case, the body sleeve and the damper sleeve can be made removable and have holes selected from any geometric shapes and their combinations.

The essence of the claimed technical solution is illustrated by the drawings of Figs. 1-4, where the following details are indicated by the positions in the figures.

The design of the device is shown in Fig. 1-4, where:

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

in fig. 2 shows a side view of the device (with the cover 20 removed);

in fig. 3 shows a sectional main view of the device in closed position;

in fig. 4 shows callout A - the main elements of the shutter in section.

The figures show:

1-building;

2-protective sleeve;

3-insert;

4-guide;

5-flap;

6-protective sleeve;

7-insert;

8-screw-stem;

9-sleeve;

10-eye bolt;

11-drive;

12-running nut;

13-thrust bearing;

14-handle;

15-sleeve;

16-pointer;

17-scale;

18-nut;

19-hairpin;

20-cover;

21-bolt;

22-nut;

23-ring rubber sealing;

24-ring protective;

25-screw.

The device consists of a control mechanism and a drive.

The regulating mechanism includes a body 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 a protective sleeve 6 and an insert 7. A rod screw 8 is installed in the groove of the valve 5.

The fixed vertical movement of the shutter 5 is provided by the guides 4 fixed to the end of the body by bolts 21.

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

To protect the bore holes from erosion and abrasive wear, a protective sleeve 6 made of an alloy with high hardness is installed in the gate 5 and liner 7, to protect the bore from erosion and abrasive wear, a protective sleeve 2 made of alloy is installed in the fixed liner 3 and the bore of the body 1 with high hardness.

On the side of the inlet of the working medium into the housing 1, a cover 20 is installed, which is attached to the housing by means of nuts 18 and pins 19.

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 hole of the housing 1 and is fastened with nuts 22.

The drive 11 is made in the form of a screw-rod 8 and a travel nut 12 with two thrust bearings 13. The reciprocating movement of the screw-rod 8 is carried out by rotating the handle 14, connected to the travel nut 12 through a sleeve 15.

The value of the throughput is determined by the position of the pointer 16 relative to the scale 17. The pointer 16 is fixedly fixed on the screw-rod 8 by the screw 25.

The device works as follows.

The principle of operation is to change the flow area of the device by changing the position of the control flap 5 with the protective sleeve 6 and the liner 7 relative to the fixed protective sleeve 2 and the liner 3.

The required value of the throughput is set by moving the pointer 16 to the corresponding mark on the scale 17.

Regulation of the flow rate of the working medium from the "CLOSED" position until the position "100"% Kv _y on the scale 17 is carried out by turning the knob 14 counterclockwise. The stem screw 8 moves upwardly the shutter 5 with the protective sleeve 6 and the insert 7 relative to the fixed protective sleeve 2 and the insert 3. As a result, the flow area in the protective sleeve 2 will increase, and the pointer 16 will move from the mark "CLOSED." to mark "100"% Kv _y on a scale of 17 (Fig. 1).

Regulation of the working medium flow from the "100"% Kv _y position to the "CLOSED" position on the scale 17 by rotating the handle 14 clockwise. The stem screw 8 moves downwardly the shutter 5 with the protective sleeve 6 and the liner 7 relative to the fixed protective sleeve 2 and the liner 3. As a result, the flow area in the protective sleeve 2 will decrease, and the pointer 16 will move from the mark "100"% Kv _y to the mark " CLOSE " on a scale of 17 (Fig. 2).

The novelty of the design lies in the fact that the proposed locking and regulating device is capable of performing the functions of regulating the flow (pressure) of the working medium and providing in the closed position VI class of metal-to-metal tightness according to GOST 9544-2015 for a certain period of operation, depending on the modes and not less IV class of tightness according to GOST 9544-2015 throughout the remaining service life.

A high class of tightness has been achieved due to lapping of the mating surfaces of the liners 3 and 7, made of VK8 hard alloy, as well as the inclusion in the design of replaceable protective sleeves 2 and 6, made of VK8 hard alloy, which, by means of sealing rubber rings 23 and protective rings 24, provide a high tightness class of the gate regulating elements.

Erosive and abrasive wear of surfaces B and C (Fig. 3) of expensive liners 3 and 7 is excluded, which functionally participate in maintaining the tightness of the device in the closed position, since The functions of regulating the flow of the working medium in the proposed design are assigned to replaceable protective sleeves 2 and 6, made of VK8 hard alloy, thereby ensuring a long service life of the device without violating the technical characteristics (tightness class and throughput characteristics).

In the proposed device, the regulating gate type, due to the full-bore design of the protective sleeves 2 and 6 (the inner diameter of the sleeves corresponds to the nominal diameter of the device), the maximum throughput characteristic of the working medium is achieved.

In the proposed device, it is possible to change the throughput characteristic at the request of customers of this type of product by changing the configuration of the bore in bushings 2 and 6 (oval hole, slotted hole, a number of cylindrical holes and other geometric shapes and their combinations) without replacing expensive carbide inserts 3 and 7.

The design of the proposed regulating device provides for the possibility of replacing quickly wearing parts of the rod seals 8 without dismantling the device from the pipeline, i.e. without shutting down the technological line and stopping the supply of the transported medium.

Claims (7)

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 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, characterized in that 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 located in guides attached to the body, and includes: a flat liner attached to its end part and located on the side of the liner housing, and a bushing installed in the entire central part of the flat liner of the shutter and part of the shutter, while the bushings of the shutter and the housing form a single central passage channel. 2. 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 inserts of the damper and the housing are made of a material with high hardness. 3. The device according to claim 1, characterized in that the cover is attached to the body by means of nuts and pins. 4. The device according to claim 1, characterized in that the drive that moves the shutter is made in the form of a handle that moves the screw-rod and a shutter attached to it. 5. The device according to claim 4, characterized in that the screw-stem contains an indicator showing the value of the valve throughput on the drive scale. 6. The device according to claim 1, characterized in that the body sleeve and the shutter sleeve are removable. 7. A device according to claim 6, characterized in that the body sleeve and the shutter sleeve have holes selected from any geometric shapes and combinations thereof.

Images