RU175971U1 - DEVICE FOR OVERLAPPING A PIPELINE BEND - Google Patents

Abstract

The utility model relates to devices for blocking pipe fittings intended for replacement and removal of flanged and welded gate valves at bends, as well as eliminating unauthorized taps without emptying the pipeline. A device for blocking a pipe outlet includes a means for introducing a blocking head, including a manual drive, a hollow cylindrical body with an attached flange, a pin with a rod installed inside it, at the end of which a blocking head is mounted, which includes a clamp, a sealant, a wedge, at least at least four crackers covered by a rubber ring, a head housing, a threaded sleeve screwed onto the clamp, and a sliding washer mounted between the body and the threaded sleeve. The clamp is made all-metal, and the threaded sleeve is provided with a locking ring, eliminating the axial movement of the housing relative to the threaded sleeve. The technical result is to increase the reliability of the overlapping head and reduce the complexity of its manufacture. 4 s.p. f-ly, 3 ill.

Description

The utility model relates to devices for blocking pipe connections when replacing and removing flanged and welded gate valves at bends, as well as eliminating unauthorized taps without emptying the pipeline.

The prior art device for blocking the pipe branch, which can be used to perform repair work on the valves of the branches without emptying the main pipeline. The device comprises a housing and a pin, between which a cylindrical pair is sealed by a cuff. To communicate the pins of rotational and translational movements, there is a flywheel with locking screws. In the threaded hole of the flywheel there is a central rod with a hex head, the left end of which is connected to the stop by a left-hand thread. A seal ring, cone, brake crackers fitted with an elastic cord are mounted on the stop. The right ends of the crackers are placed in the grooves of the clip. The clamp is based on a threaded sleeve kinematically connected to the quill via a key. Between the stop and the clamp there is a spiral compression spring. Due to the force of the spring, the clamp takes its extreme position, presses on the shoulder of the threaded sleeve, introducing the last landing belt into the pin boring (RU10828 U1, publ. 16.08.1999, IPC: F16L 55/10).

The disadvantage of this device is the possibility of a malfunction of the device due to incomplete entry of the landing belt into the pinhole boring due to insufficient spring force.

The prior art also knows a device, such as "Packer", for overlapping and eliminating plungers, which includes two main nodes, namely, a replaceable overlapping head and a device for introducing the head, the joint use of which allows the cable to be sealed with the possibility of its elimination. The overlapping head contains a clamp fixed on the threaded axis, a sealant, a movable wedge-shaped stop, a spring installed in the clamp cavity, crackers and an upper cup seated on the clamp axis through a sleeve fixed with a nut on the clamp axis. The device for introducing the head includes a cylindrical body, at the base of which a flange is installed. In the cavity of the housing with the possibility of rotation by means of a manual drive, a hollow pin is installed with a central rod installed inside it, at the end of which a blocking head is attached (RU 125671 U1, publ. 03/10/2013, IPC: F16L 55/136, F16L 55/18).

The main disadvantage of the device, such as "Packer", for overlapping and eliminating plungers is the lack of reliability of removing the overlapping head, due to frequent malfunctions in operation due to failure of the spring, which unlocks the crackers of the head.

In addition, the use of a clamp, consisting of two parts, reduces the reliability of the device and the manufacturability of its manufacture.

The device according to the patent for utility model RU 125671 U1 in terms of the set of technical features and the achieved technical result is closest to the proposed device and is taken as a prototype.

The technical problem to which the claimed utility model is directed is the modernization of the device for blocking the pipe branch by improving the design of the blocking head.

The technical result achieved by the implementation of the utility model is to increase the reliability of the overlapping head and reduce the complexity of its manufacture.

The claimed technical result is achieved due to the fact that the device for blocking the pipe outlet includes means for introducing the head of the overlap, including a manual drive, a hollow cylindrical body with an attached flange, a pin with a rod installed inside it, at the end of which a head is closed, including a clamp, a sealant, a wedge, at least four crackers covered by a rubber ring, a head housing, a threaded sleeve screwed onto the clamp, and a sliding washer mounted between the case and the threaded sleeve, while the clamp is made of all-metal, and the threaded sleeve is equipped with a locking ring, excluding axial movement of the housing relative to the threaded sleeve.

In addition, in the particular case of the implementation of the utility model, the clamp is made of steel amenable to hardening hardening;

In addition, in the particular case of the implementation of the utility model, the circlip is made with an allowable axial load of 11.7 to 39 kN.

In addition, in the particular case of the implementation of the utility model, the threaded sleeve has an outer diameter of 22 to 40 mm, a diameter of internal thread from M16 to M30 and a length of 40 to 63 mm.

In addition, in the particular case of the implementation of the utility model, the sliding washer is made of bronze.

A utility model is explained with reference to the drawings below.

In FIG. 1 shows a blocking head inserted into a pipe branch (sectional view); in FIG. 2 shows an overlapping head in an isometric view (collapsible), FIG. 3 shows means for introducing an overlapping head.

In the figures indicated:

1 - clip;

2 - sealant;

3 - wedge;

4 - rubber ring;

5 - cracker;

6 - body head overlapping;

7 - threaded sleeve;

8 - sliding washer;

9 - a lock ring;

10 - pipe branch pipe;

11 - overlapping head;

12 - means for introducing a head overlapping;

13 - housing means for entering the head of the overlapping;

14 - pinol;

15 - the helm of the housing means for entering the head of the overlapping;

16 - steering wheel pintles;

17 - a stock;

18 - rod handle;

19 - flange;

20 - manometer;

21 - ball valve;

22 - threaded nut;

The overlapping head (Fig. 1, 2) consists of an all-metal clamp 1, on which a seal 2 is made, made of oil-resistant rubber, and pressed by a wedge 3. The wedge 3 transfers force to the crackers 5, which are located in the figured cut-outs of the head covering body 6 and having one degree of freedom. Crackers 5 are covered by a rubber ring 4, so that they are kept from falling out. A threaded sleeve 7 is screwed onto the clamp 1 through the housing 6 of the head overlapping, which is fixed by the locking ring 9. A sliding washer 8 made of bronze is installed between the housing of the head 6 and the threaded sleeve 7.

The retaining ring 9 and the flange of the threaded sleeve 7 exclude axial movement of the head housing 6 relative to the threaded sleeve 7 and provide the possibility of transmitting force to the head housing 6 that overlays the threaded sleeve 7 during rotation.

The clamp 1 is made all-metal, which increases the reliability of the design and manufacturability. The clamp 1 is made of steel, amenable to hardening hardening followed by heat treatment, which provides an increase in the rate of temporary tensile strength σ _in .

As the retaining ring 9, a spring thrust flat outer ring with an allowable axial load of 11.7 to 39 kN is used, which allows you to apply more torque to the threaded sleeve 7.

To install the snap ring 9 in the threaded sleeve, a groove is made, while the threaded sleeve has an external diameter of 22 to 40 mm, the diameter of the internal thread is from M16 to M30, and the length is from 40 to 63 mm.

The tool 12 for entering the head of the overlapping (Fig. 3) is known from patent No. RU 125671 U1, publ. 03/10/2013 and is not the subject of this utility model. The means 12 for introducing the overlapping head comprises a hollow body 13 to which a flange 19 is fastened on one side and a threaded nut 22 on the other. A pin 14 is located inside the body 13 with a pin 16 mounted on it. Inside the pin 14 passes the rod 17, on which the handle is fixed 18. The threaded end of the rod 17 is designed to hold the overlapping head 11 in the pin 14.

The steering wheel 15 together with the threaded nut 22 with the head 11, the steering wheel 16 with a pinole and the handle 18 of the rod comprise a manual drive that feeds, disconnects and removes the head 11 from the branch pipe 10. The flange 19 has a radial through threaded hole to which is connected via a tee ( in Fig. 3 is not indicated) a manometer 20 and a ball valve 21 for monitoring the tightness of the overlap of the branch pipe 10.

The operation of the device to block the pipe outlet.

The overlapping head 11 is fed into the overlap area of the pipe branch pipe 10 by means of the head input 12 by turning the steering wheel 15 counterclockwise, while the pin 14 with the rod 17 and the blocking head 11 enters the zone of the pipe branch pipe 10 overlap. The pipe branch pipe 10 overlap the overlapping head 11 is rotated counterclockwise by the steering wheel 16 of the pin, which transmits rotation through the pin 14 of the threaded sleeve 7 having a left-hand thread inserted into it with its hexagonal part. Fixation of the clip 1 from rotation during overlapping is carried out by the rod 17, the threaded end of which is screwed into the clip 1 of the overlapping head 11 and has a right-hand thread. The impact on the rod 17 is carried out by the handle 18.

When the threaded sleeve 7 is rotated, it is screwed onto the all-metal clip 1 and through the body 6 of the overlapping head transfers force to the crackers 5, which, moving along the conical surface of the wedge 3, diverge in the radial direction until they stop against the walls of the nozzle 10. After the emphasis of the crackers 5 on the walls of the nozzle branch 10 of the pipeline, the axial compression force is transmitted to the sealant 2, which is compressed from two sides. The outer diameter of the sealant 2 during axial compression increases, blocking the gap between the blocking head 11 and the branch pipe 10, which ensures sealing of the pipe. The tightness of the overlap of the branch pipe 10 is controlled by a pressure gauge 20 after depressurization between the flange 19 and the overlapping head 11 using a ball valve 21.

Removing the head occurs by rotating the pin 14 clockwise, which transmits rotation to the nut of the threaded 22, which drives the head housing 6 of the overlapping head, the compression force acting on the sealant 2 is reduced and it takes its original shape. Then, with the help of the locking ring 9, the threaded sleeve 7 lifts the clamp 1 behind it, in the figured cut-outs of which crackers are installed 5. Under the action of the elastic forces of the rubber ring 4, the crackers 5 are removed from the walls of the branch pipe 10, releasing the overlapping head 11. Rigid connection of the threaded sleeve 7 with the housing 6 of the head of the overlapping by means of the locking ring 9 and the sliding washer 8 provides for the forced unlocking of crackers, which increases the reliability of removing the overlapping head of the device to block the pipe outlet.

Claims (5)

1. A device for shutting off a pipe outlet, comprising means for introducing a blocking head, including a manual drive, a hollow cylindrical body with an attached flange, a pin with a rod mounted inside it, at the end of which a blocking head is mounted, including a clamp, a sealant, a wedge at least four crackers covered by a rubber ring, a head housing, a threaded sleeve screwed onto the clamp, and a sliding washer installed between the body and the threaded sleeve, characterized in that m-metal is formed, and the threaded sleeve is provided with a lock ring precluding axial movement of the housing relative to the threaded sleeve. 2. The device according to p. 1, characterized in that the clamp is made of steel, amenable to hardening. 3. The device according to p. 1, characterized in that the circlip is made with an allowable axial load of 11.7 to 39 kN. 4. The device according to p. 1, characterized in that the threaded sleeve made with a groove for the retaining ring has an outer diameter of 22 to 40 mm, a diameter of internal thread from M16 to M30 and a length of 40 to 63 mm. 5. The device according to claim 1, characterized in that the sliding washer is made of bronze.

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