RU2720060C2 - Hatch-cock - Google Patents

Abstract

FIELD: transport of substances.

SUBSTANCE: invention relates to pipeline transport. Hatch-cock contains body 1, branch pipes 2 for connection with pipeline branches, process branch pipe 3 with blind cover 4, locking element 5, stock 6, seal 7 of locking element and seal 8 of rod. Locking element 5 is installed in housing with possibility of rotation from rod 6 and fixation in working positions. Rod is connected with hand wheel 9. Branch pipes are equipped with movable couplings 10. Each coupling is connected to housing by mechanism of axial movement 11. Locking element 5 consists of tube 12 equipped with a plug, and through pipe 13. Locking element is fixed on rod with possibility of connection with couplings 10 of pipes 12, 13 with branch pipes 2, 3. Seals 7 of locking element are installed in movable joints "sleeve-pipe" and "coupling-pipe of locking element". Hatch-cock is used as a hatch, multi-way and pass-through valve suitable for places of branching of the pipeline and instead of access hatch and devices of overlapping installed on branches of the pipeline.

EFFECT: proposed hatch-cock.

3 cl, 11 dwg

Description

The invention relates to pipeline transport and can be used to load technological means into the pipeline, overlap, pass and change the flow direction of the transported medium.

Known hatch of the pipeline (see patent for the invention RU 2321793, F16L 45/00, F16L 55/18, published 04/10/2008) with a rotary cover mounted on an axis fixed parallel to the pipeline. The hinged manhole cover is made in the form of a pipeline section consisting of two movable pipes mounted telescopically in one another. Pipes are equipped with a seal and flanges for fastening to the pipeline. The cover is placed between the flanges of the pipeline, which are provided with bosses and connected by traverses fixed in the bosses parallel to the pipeline. Between the flanges of the lid and the pipeline, a swivel bracket with a blind and ring discs is installed to block and pass the flow of the transported medium.

The manhole provides loading technological means into the pipeline, shutting off and passing the flow of the transported medium.

However, the hatch-manhole has inherent disadvantages:

- the centers of mass of the manhole cover and bracket with a blind and annular discs are removed from the axis of rotation, which creates a moment from gravity that makes them difficult to turn, and requires lifting means to control the device on large pipelines;

- the manhole is not suitable for shutting off the pipeline at overpressure in the pipeline;

- the manhole is not suitable for loading technological means and changing the flow direction of the transported medium at the branching points of the pipeline.

As a prototype, a three-way ball valve has been adopted (see patent for utility model RU 152994, F16 K 5/06, G01F 25/00, published 06/27/2015), comprising a body, pipes for connecting to the pipeline, a technological pipe with a blank cover , locking element, stem and seals. The locking element is mounted in the housing with the possibility of rotation from the rod and fixation in working positions. The stem is connected with a manual or mechanized drive. The locking element is made in the form of a ball plug with a blind hole for loading the control ball piston and its transfer to one of the nozzles.

In a three-way spherical crane, the centers of mass of the locking element and the rod are located essentially on the axis of rotation, which facilitates rotation and eliminates the use of lifting means to control the device on pipelines of large diameter. The three-way ball valve is designed to load a control ball piston into the pipeline, and is not suitable for passing and changing the flow direction of the transported medium.

The problem solved by the invention is the creation of a universal device - a hatch-crane with the functions of a technological hatch, a multi-way and straight-through crane, suitable for branching points of the pipeline and its application instead of hatchways and shutoff devices installed on the branches of the pipeline.

The technical result from the use of the invention is to reduce the cost of construction and operation of the pipeline.

1st execution of the hatch crane.

The hatch-crane contains a housing, nozzles for connection to a pipeline, a technological nozzle with a blind cover, a locking element, a rod and seals. The locking element is mounted in the housing with the possibility of rotation from the rod and fixation in working positions. The stem is connected with a manual or mechanized drive.

To solve this problem, the following is provided:

- the locking element is made of at least two pipes for shutting off and passing the flow of the transported medium;

- nozzles are equipped with movable couplings;

- the locking element is fixed on the rod with the possibility of connection by movable couplings of the pipes of the locking element with nozzles;

- each movable coupling is connected to the housing by an axial movement mechanism;

- seals are installed in the movable joints "coupling-pipe" and "coupling-pipe of the locking element".

The locking element from the pipes ensures the operation of the proposed device in the modes of the technological hatch, multi-pass and feed-through crane.

Movable couplings and mechanisms of their axial movement provide fixation and sealing of the locking element pipes.

The mechanisms of axial movement of the couplings reduce the complexity of servicing the hatch.

2nd execution of the hatch crane.

The hatch-crane can be made with a sealed case in which the movable body-to-clutch and body-stem connections are equipped with seals. The hatch-crane of this design provides overlapping and transmission of the flow of the transported medium at excess pressure in the branches of the pipeline.

3rd execution of the hatch crane.

The hatch-crane can be made with a locking element, in which at least one pipe is equipped with a plug. The hatch-crane of this design provides shutoff of the flow of the transported medium through the driving branch of the pipeline.

The most universal and preferred design of the hatch-crane contains the signs of all three versions.

In FIG. 1 is a perspective view of a preferred hatch structure. In FIG. 2 shows a section AA in FIG. 1 for a four-way sunroof, FIG. 3 is a section AA in FIG. 1. for a four-way hatch in the state of rotation of the locking element. In FIG. 4-9 shows the application of a four-way hatch in various positions of the shut-off element. In FIG. 10 shows a section AA in FIG. 1 for a walk-through hatch in the mode of shutting off the flow of the transported medium and loading the technological means, in FIG. 11 is a section AA in FIG. 1 for a walk-through hatch in the mode of transmission of the flow of the technological environment and technological means.

The hatch-crane contains a housing 1, nozzles 2 for connection with the branches of the pipeline, a technological nozzle 3 with a blind cover 4, a locking element 5, a rod 6, a seal 7 of the locking element and a seal 8 of the rod. The locking element 5 is installed in the housing with the possibility of rotation from the rod 6 and fixation in operating positions. The stem is connected to the hand wheel 9.

The nozzles are equipped with movable couplings 10. Each coupling is connected to the housing by an axial movement mechanism 11.

The locking element 5 consists of a pipe 12 equipped with a plug, and a passage pipe 13.

 The locking element is mounted on the rod with the possibility of connection by couplings 10 of pipes 12, 13 with pipes 2, 3.

Clutches and axial movement mechanisms provide connection and disconnection of pipes 12, 13 with nozzles 2, 3. Seals 7 of the locking element are installed in the movable joints "coupling-pipe" and "coupling-pipe of the locking element". The flanges of the nozzles 2 are pulled together with the flanges of the inlet branch 14 and the receiving branches 15, 16 with bracket bolts 17. The flange of the technological nozzle 3 is pulled together with the cover 4 with a bracket bolt 17. The axial movement mechanism 11 is made of at least two screw-nut gears, in which screws 18 are rotatably fixed in the housing, and the nuts are made in the form of threaded holes in the coupling 10. Technological means 19 in FIG. 4-11 are shown conditionally.

In FIG. 2, a four-way hatch-crane is shown with a locking element in the position of supplying the transported medium from the supply branch 14 to the receiving branch 15 and overlapping the receiving branch 16 of the pipeline.

Four-way hatch-crane operates as follows.

To rotate the locking element 5 to the desired position by rotating the screws 18, the movable couplings 10 are displaced until the pipes 12, 13 and the pipes 2, 3 are disconnected, see FIG. 3.

The rotation of the steering wheel 9 turn the locking element 5 with pipes 12, 13 in one of the following positions:

- the supply of the transported medium from the supply branch 14 to the receiving branch 15 and the overlap of the receiving branch 16 of the pipeline, see Fig. 4;

- the supply of the transported medium from the supply branch 14 to the receiving branch 16 and the overlap of the receiving branch 15 of the pipeline, see Fig. 5;

- overlapping the supply branch 14 of the pipeline, see Fig. 6;

- loading the technological means into the receiving branch 15 through the technological branch pipe 3 with the cover 4 open and the blocked supply branch 14 of the pipeline, see FIG. 7;

- loading the technological means into the receiving branch 16 through the technological branch pipe 3 with the cover 4 open and the blocked supply branch 14 of the pipeline, see FIG. 8;

- loading technological means into the supply branch 14 of the pipeline from the receiving branch, for example, 16, when another receiving branch, for example, 15 is blocked, see FIG. 9.

After turning the locking element 5 to the desired position by rotating the screws 18, the movable couplings 10 are displaced until the pipes 12, 13 of the locking element are sealed with the nozzles 2, 3.

Passage hatch, see fig. 10, contains a locking element, in which the walls of the passage pipe 13, are used as a plug for pipes 12. The passage hatch-crane operates as follows.

To rotate the locking element 5 to the desired position by rotating the screws 18, the movable couplings 10 are displaced until the pipes 12, 13 and the pipes 2, 3 are disconnected, see FIG. 3.

The rotation of the steering wheel 9 turn the locking element 5 in one of the following positions:

- overlapping the pipeline with blind pipes 12, see FIG. 10.

- transmission of the working fluid flow through the pipe 13, see FIG. eleven.

After turning the locking element 5 to the desired position by rotating the screws 18, the movable couplings 10 are displaced until the pipes 12, 13 are sealed with the pipes 2, 3.

The loading of the technological means 19 is carried out in the position of the locking element - blocking the pipeline with blind pipes 12, see FIG. 10. The bracket closure 17 is bred on the flange and cover 4 of the process pipe 3, the cover 4 is opened and the process tool 19 is introduced into the passage pipe 12 of the locking element. The pipes 12, 13 are disconnected from the pipes 2, 3 by moving the couplings 10 and the axial movement mechanism 11, as described above. The locking element is turned to the position - transmission of the working medium flow through the pipe 13, see FIG. 11. The pipes 12, 13 are connected to the pipes 2, 3 by moving the couplings 10 and the axial movement mechanism 11, as described above.

After completion of technological work, the technological tool is removed from the pipeline by the reverse sequence of these actions.

The production of the proposed device is implemented in a metalworking plant. Industrial applicability of the hatch crane is confirmed by bench tests.

Claims (3)

1. A hatch-crane comprising a housing, nozzles for connection to a pipeline, a technological nozzle with a blind cover, a locking element, a rod and seals; the locking element is mounted in the housing with the possibility of rotation from the rod and fixing in working positions, the rod is connected with a manual or mechanized drive, characterized in that the locking element is made of at least two pipes for shutting off and passing the flow of the transported medium, the nozzles are equipped with movable couplings, the locking element is fixed on the rod with the possibility of connection by the movable couplings of the pipes of the locking element to the nozzles, each movable coupling is connected to the housing by an axial movement mechanism, sealing lips Credited in movable joints "clutch-tube" and "tube-sleeve locking element." 2. A sunroof according to claim 1, characterized in that it is made with a sealed housing, in which the movable body-to-sleeve and body-stem connections are equipped with seals. 3. The hatch crane according to claim 1, characterized in that it is made with a locking element, in which at least one pipe is equipped with a plug.

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