RU205090U1 - LYUK-LAZA FLANGE JOINT - Google Patents

Abstract

The yoke flange connection of the manhole with a diameter of over 1000 mm provides closing-opening of the split yoke without means of mechanization. The yoke flange connection of the manhole contains a neck flange 1, a pressure ring 2, a cover 3, an O-ring 4, a split yoke 5 and clamps 6 segments 7 split yoke. The neck flange is made with a cylindrical bore to fit the pressure ring 2, the cover 3 and the sealing ring 4. The pressure ring is made with the flange 8 and is seated on the cylindrical surface of the cover 3. An annular shoulder is made on the cover. O-ring 4 is installed between the annular shoulder of the cover and the pressure ring. The split yoke 5 is made with a trapezoidal groove for fit with interference on the outer conical surfaces of the neck flange 7 and the pressure ring flange 8. Segments 7 of the split yoke are fixed on the neck with the possibility of rotation and capture by the groove of the yoke of the neck flange 1 and the pressure ring flange 8. The swivel bracket 9 is installed in the posts 10 on the axis 11. The latch 6 of the split yoke segment is made in the form of an elastic U-shaped post enclosing the swivel bracket and limiting the angle of its rotation. The pivot bracket 9 is equipped with locking protrusions 12, which are placed with the possibility of input-output into the locking holes of the vertical walls of the retainer 6. After inserting the locking protrusions 12 into the locking holes of the retainer, the latter holds the bracket and the split yoke segment in a closed or open state. The segments 7 of the split yoke and the flange 8 of the pressure ring 2 are equipped with tension locks-latches 13. The swivel bracket can be made in the form of a curved elastic plate 14 or curved elastic rods 15. The technical result from the use of the utility model is to reduce the cost of manufacturing and operating the hatch manhole. 4 c.p. f-ly, 9 ill.

Description

The utility model relates to high-pressure technology and can be used to provide access to vessels, tanks and pipelines for technological purposes (cleaning, installation, repair, testing, etc.).

Known yoke flange connection (see. Connection of pipelines flanged from steel for air systems. OST 1 10078-71), containing flanges, an O-ring, a split yoke, a metal tape and a screw mechanism for tensioning the tape. The outer ends of the flanges are made in the form of coaxial conical surfaces directed by large bases to the inner ends. The split yoke is made with a trapezoidal groove for fit with an interference fit on the outer conical surfaces of the flanges. A gasket is installed between the flanges. The yoke segments are secured to the tape. The screw tensioning mechanism is installed on the belt with the possibility of bringing together and spreading its ends. The split yoke, strap and tensioning mechanism form a removable clamp.

A yoke flange connection is used in pipelines with a diameter of up to 150 mm and provides an easy opening and closing of a split yoke.

The known yoke flange connection is not suitable for large diameter flanges. With an increase in the diameter of the flanges, the mass of the removable clamp increases and mechanization is required for its installation and removal. The cost of manufacturing and maintaining a yoke flange connection increases.

As a prototype, a yoke flange connection of the hatch-hole was taken (See patent for the invention: LYUK-LAZ. RU 2 428 612, IPC F16J 13/16; F16J 13/10, published 09/10/2011). The yoke flange connection of the hatch-manhole contains a throat flange, a pressure ring, a cover, an O-ring, a split yoke and retainers of the yoke half rings. The throat flange is made with a cylindrical bore to fit the cover, O-ring and pressure ring. The pressure ring is made with a flange and is seated on the cylindrical surface of the cover. An annular shoulder is made on the cover. An O-ring is installed between the cover collar and the pressure ring. The split yoke is made with an internal groove of a rectangular section. The half rings of the split yoke are fixed on the neck with the possibility of rotation and capture by the inner groove of the neck flanges and the pressure ring. With a closed split yoke, an increase in the pressure of the working medium causes the cover, O-ring, pressure ring and split yoke to move away from the throat flange. The outer ends of the throat flange and the pressure ring are pressed against the walls of the inner groove of the yoke. The O-ring is deformed between the annular shoulder of the cover, the pressure ring and the cylindrical bore of the flange, which ensures reliable sealing of the hatch. The force of pressure of the medium on the cover is perceived by the pressure ring, the half rings of the split yoke and the neck flange.

The prototype is used in manholes with a diameter of up to 1000 mm and provides easy closing-opening of the yoke. With a further increase in the diameter of the hatch and flanges, the mass of the split yoke half rings increases. Means of mechanization are required for their closing-opening. The costs of manufacturing and maintenance of the yoke flange connection of the hatch-manhole are increasing. In addition, in the open state, the segments of the split yoke are not fixed and occupy indeterminate positions that impede the safe use of the hatch.

The problem solved by the utility model is the creation of a yoke flange connection of a hatch-manhole of large diameter (more than 1000 mm), which provides an easy closing-opening of the split yoke segments without mechanization.

The technical result from the use of the utility model is to reduce the cost of manufacturing and operating the hatchway.

The utility model can be implemented in several versions, used in various operating conditions of the hatchway.

1st execution.

The yoke flange connection of the hatch-manhole contains a throat flange, a pressure ring, a cover, an O-ring, a split yoke and retainers of the split yoke segments. The throat flange is made with a cylindrical bore to fit the cover, O-ring and pressure ring. The pressure ring is flanged and seated on the cylindrical surface of the cover. An annular shoulder is made on the cover. The O-ring is positioned between the cover collar and the pressure ring. The split yoke is made with an internal groove. The segments of the split yoke are fixed on the neck with the possibility of rotation and capture by the inner grooves of the neck flange and the pressure ring flange.

To solve this problem, each segment of the split yoke is fixed on a swivel bracket with the ability to move in the radial plane of the neck. The clamp of the yoke segment is made in the form of an elastic U-shaped rack, which embraces the swivel arm and limits the angle of its rotation. The swivel bracket is equipped with locking protrusions, which are placed with the possibility of input-output into the locking holes of the vertical walls of the retainer. After inserting the locking lugs into the locking holes of the retainer, the latter holds the bracket and the yoke segment in a closed or open state.

Fastening the segments of the split yoke on a swivel bracket, with the possibility of movement in the radial plane of the neck, allows you to make a split yoke with such a number of segments at which the efforts to move each segment do not exceed the physical capabilities of the operating personnel, and provides easy, without mechanization, closing-opening split yoke. (According to GOST R EN 1005-3-2010. "Safety of machines. Physical capabilities of a person. Part 3. Recommended limits of effort when working on machines": the effort on the wrist of one hand should not exceed 250 N). The locks exclude undefined positions of the segments that prevent the safe use of the hatch-hole.

Execution 1 provides a solution to the problem at the lowest manufacturing costs. Further improvement of the yoke flange connection is achieved in the following versions.

2nd execution.

Yoke flange connection of the hatch-manhole in the 1st version, characterized in that the yoke segments and the pressure ring flange are equipped with tension locks-latches for a tight fit of the yoke segments on the neck and pressure ring flanges.

Tension latches-latches provide uniform compression of the yoke segments to the throat and pressure ring flanges, thereby eliminating overloading of individual segments of the split yoke after they are closed and the pressure of the working medium is increased.

3rd execution.

Yoke flange connection of the hatch-manhole in one of the versions 1, 2, characterized in that the swivel bracket is made in the form of a curved elastic plate.

Swivel brackets in the form of a bent elastic plate compensate for temperature deformations and technological deviations in the dimensions, shape and relative position of the mating surfaces of the split yoke, neck flange and pressure ring flange. When the pressure force of the working medium is perceived by the segments of the split yoke, the bracket in the form of a curved elastic plate is deformed in the longitudinal direction, ensuring the segment's mobility and its tight fit on the throat and pressure ring flanges. The reliability of the yoke flange connection is increased. The version is intended for enterprises with low precision in the manufacture of products and operating conditions with a large temperature difference.

4th execution.

A yoke flange connection of the hatch-manhole in one of the versions 1, 2, characterized in that the swivel bracket is made in the form of at least one bent elastic rod.

Swivel brackets in the form of one or more elastic rods compensate for temperature deformations and technological deviations of dimensions, shape and mutual arrangement of the mating surfaces of the split yoke, neck flange and pressure ring flange. When the pressure force of the working medium is perceived by the segments of the split yoke, the bracket in the form of a curved elastic rod is deformed in the longitudinal and transverse directions, ensuring the mobility of the yoke segments and their tight fit on the neck and pressure ring flanges. The reliability of the yoke flange connection is increased.

The design compensates for technological deviations and operational deformations exceeding at least 2 mm and can be manufactured under operating conditions for finalizing finished products and for repair purposes.

5th execution.

Yoke flange connection of the hatch-manhole in one of the versions 1-4, characterized in that the segment of the split yoke is equipped with a socket for the mounting lever for transferring between the states of closing and opening.

The use of the mounting lever provides a convenient, non-laborious closing-opening of the split yoke segments without mechanization.

FIG. 1 shows a front view of a hatchway in version 2 with a split yoke in a closed state, FIG. 2 - view A in FIG. 1, FIG. 3 - section b-b in Fig. 1 for version 2; in fig. 4 - section b-b in fig. 3; in fig. 5 - section b-b in Fig. 1 for version 3; in fig. 6 - section G-G in Fig. five; in fig. 7 - section b-b in Fig. 1 for version 4; in fig. 8 - section D-D in Fig. 7, Fig. 9 - section b-B in Fig. 1 for version 2 with split yoke segment in open position.

The yoke flange connection of the hatch-manhole contains a neck flange 1, a pressure ring 2, a cover 3, an O-ring 4, a split yoke 5 and retainers 6 of the segments 7 of the split yoke. The neck flange is made with a cylindrical bore to fit the pressure ring 2, the cover 3 and the O-ring 4. The pressure ring is equipped with a flange 8 and is seated on the cylindrical surface of the cover 3. An annular shoulder is made on the cover. O-ring 4 is located between the annular shoulder of the cover and the pressure ring. The split yoke 5 is made with a trapezoidal groove for fit with interference on the outer conical surfaces of the neck flange 7 and the pressure ring flange 8. The segments 7 of the split yoke are fixed on the neck with the possibility of rotation and capture by the grooves of the neck flange 1 and the pressure ring flange 8.

To solve this problem, each segment of the yoke is fixed on a swivel bracket 9 with the possibility of movement in the radial plane of the neck. The swivel bracket 9 is installed in the posts 10 on the axis 11. The clamp 6 of the yoke segment is made in the form of an elastic U-shaped strut enclosing the swivel bracket and limiting the angle of its rotation. The pivot arm 9 is equipped with locking protrusions 12, which are placed with the possibility of input-output into the locking holes of the vertical walls of the retainer 6. After inserting the locking protrusions 12 into the locking holes of the retainer, the latter holds the bracket and the split yoke segment in a closed or open state.

Segments 7 of the split yoke and the flange 8 of the pressure ring 2 are equipped with tension locks-latches 13 for tight fit of the yoke segments on the throat and pressure ring flanges.

FIG. 5, 6 show a yoke flange connection of the hatch-manhole in version 3 with a swivel bracket in the form of a bent elastic plate 14.

FIG. 7, 8 show a yoke flange connection of the hatchway in version 4 with a swivel bracket in the form of a pair of bent elastic rods 15 forming a frame structure with a bushing 16 and a traverse 17 equipped with locking protrusions 12.

FIG. 9 shows a yoke flange connection of the hatchway, in which the split yoke segment is provided with a socket 18 for the mounting lever 19 for transferring the yoke between the closed and open states.

The yoke flange connection of the manhole is used as follows.

If it is necessary to open the hatch-manhole, the working medium is removed from the volume under it. Open the tension locks-latches 12. By means of the mounting lever 18, inserted into the socket 17, the segments 7 of the split yoke are taken to the opening state until the locking lugs 11 are fixed in the locking holes of the retainer 6. Then the cover 3 with the pressure ring 2 and the sealing ring 4 are removed from the bore neck flange 1.

After completion of work in the space under the hatch-manhole, the drag flange connection is brought into a closed state by the reverse sequence of the above actions.

The industrial applicability of the proposed utility model is confirmed by prototype tests. The production of the yoke flange connection of the hatch-manhole is realized in the conditions of a metalworking plant.

The proposed utility model reduces the cost of manufacturing and operating a large diameter hatchway.

Claims (5)

1. Yoke flange connection of the hatch, containing a throat flange, a pressure ring, a cover, an O-ring, a split yoke and retainers of the split yoke segments, the throat flange is made with a cylindrical bore for fitting the cover, O-ring and pressure ring, the pressure ring is equipped with a flange and seated on the cylindrical surface of the lid, an annular collar is made on the lid, the sealing ring is laid between the annular collar of the lid and the pressure ring, the split yoke is made with an inner groove, the segments of the split yoke are fixed on the neck with the possibility of turning and gripping by the inner grooves of the neck flange and the flange of the pressure ring, characterized in that each segment of the split yoke is fixed on a swivel bracket with the possibility of movement in the radial plane of the throat, the clamp of the yoke segment is made in the form of an elastic U-shaped rack, covering the swivel bracket and limiting the angle of its rotation, the swivel bracket about is equipped with locking projections, which are placed with the possibility of input-output into the locking holes of the vertical walls of the retainer, and when the locking projections are inserted into the locking holes of the retainer, the latter holds the bracket and the yoke segment in a closed or open state. 2. Yoke flange manhole connection according to claim 1, characterized in that the segments of the split yoke and the flange of the pressure ring are equipped with tension locks-latches for tight fit of the segments on the flanges of the neck and the pressure ring. 3. Yoke flange manhole connection according to claim 1 or 2, characterized in that the swivel bracket is made in the form of a curved elastic plate. 4. Yoke flange manhole connection according to claim 1 or 2, characterized in that the swivel bracket is made in the form of at least one curved elastic rod. 5. Yoke flange connection of the hatch-manhole according to one of paragraphs. 1-5, characterized in that the split yoke segment is provided with a socket for the mounting lever for transferring between the closed and open states.

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