RU157064U1 - DEVICE FOR REPAIR WORKS ON THE UNDERWATER OF HYDROTECHNICAL OBJECTS - Google Patents

Abstract

A device for carrying out repair work on the underwater parts of hydraulic structures, containing a sectioned housing connected to the object being repaired through sealing elements, the housing is made with the formation of a closed chamber with side walls, a bottom and a technological platform in which a profile hole, side and upper fastening holding elements are made , power jacks, ballast compartments and a water pumping pipeline, the lower end of which is located at the bottom of a closed chamber, characterized in that it contains inclined rods pivotally fastened with lower ends on the housing, and the upper ends of these rods are connected through the upper fastening holding elements with the hydrotechnical object being repaired, a guard rail made over the technological platforms, a vertical gangway installed at the edge of the profile hole, while the power jacks, located on both sides of the housing, are connected through lateral fastening holding elements with the hydraulic object under repair.

Description

The utility model relates to the construction and repair of hydraulic structures and can be used to perform various works on sea piers, overpasses, oil and gas rigs and other objects with flat surfaces in contact with sea water, with the aim of cleaning and protecting them from corrosion and fouling.

A device is known for repairing underwater parts of hydraulic structures (RF patent No. 2079600, IPC E02B 1/00, publ. 05.20.1997), including a working chamber in the form of a waterproof prefabricated sectional frame with a supporting working platform and mounting racks to the upper structure of the structure, a device for water drainage from the working chamber and buoyancy, while the prefabricated sectional frame is formed from the opening halves made in plan of semicircles equipped with spacers pivotally attached on one side to the semicircles for filling the gap between the piles with complete sealing of the joints between them and the sections of the frame, and the frame is divided into compartments in height, and the working chamber is equipped with a removable sealing collar in the form of piles located below the platform, an air supply device made in the form of an ejector and installed in the lower compartment, and the working platform is made of stainless steel for water drainage into the lower compartment of the working chamber to the ejector.

The closest in technical essence to the proposed technical solution is a known device for performing work on the underwater parts of hydraulic structures (RF patent No. 2136813, IPC E02B 1/00, publ. 09/10/1999), including open from above and from the front side and formed by side walls , the back wall and the bottom of the frame with ballast compartments and a sealing circuit, fasteners for attaching the frame to the hydraulic structure and installation for pumping water from the frame, the device is equipped with buoyancy of the frame by air compartments located in the side walls of the frame, and the ballast compartments are located in the bottom of the frame and in its side walls, static position fixers are installed in the upper part of the frame, and the water pumping unit is located directly in the frame.

A disadvantage of the known devices is the lack of reliability and safety during the repair work and limited operational capabilities due to the lack of technical means to quickly carry out readjustment and carry out work on objects with different geometric parameters.

The technical result, which consists in increasing reliability and safety, expanding operational capabilities, as well as improving ease of use, in a device for carrying out repair work on the underwater parts of hydraulic structures containing a sectioned housing connected to the object being repaired through sealing elements, the housing is formed a closed chamber with side walls, a bottom and a technological platform in which a profile hole is made, side and upper mounting rods The measuring elements, power jacks, ballast compartments and a water pumping pipe, the lower end of which is located at the bottom of the closed chamber, is achieved by the fact that the device contains inclined rods pivotally mounted with the lower ends on the housing, and the upper ends of these rods are connected through the upper fastening holding elements with a hydrotechnical facility under repair, a railing made over technological platforms, a vertical gangway installed at the edge of the profile hole, while jacks located on both sides of the housing are connected through lateral fastening holding elements with the hydraulic object under repair.

The essence of the utility model is illustrated by drawings, where:

- in FIG. 1 shows a view of the device from the side of its attachment to the flat surface of the repaired object;

- in FIG. 2 shows a top view of the device;

- in FIG. 3 shows a side view of the device.

The device (Fig. 1 - Fig 3), consists of a housing 1, in the upper part of which is mounted a guard rail 2 for the safe operation of staff. On the flat surface of the repaired object 3, two upper fastening retaining elements 4 are welded, which serve to fix the inclined rods 5, hold the device in a predetermined position and counteract the buoyancy force and two side fastening holding elements 6 for fixing the hydraulic jacks 7 on the flat surface of the object 3 (Fig. 2).

Hydrojacks 7 with a pump (not shown in the drawings) are mounted on both sides of the housing 1 to press the device to the surface of the object 3 (Fig. 2). In the upper part of the housing (Fig. H), a technological platform 8 is mounted, having a profile hole 9 with a hatch (not shown) and a ladder 10 for access for maintenance personnel to the inside of the device. In the lower part, the device has a bottom 11 with a pit (not shown in the drawings) for completely draining the internal chamber of the device, which is carried out through pipeline 12 by pumping sea water from the pit from the internal cavity of the device. The casing is sealed from the external water environment by rubber sealing elements 13, laid along the entire perimeter of the device casing adjacent to the flat surface of the object 3.

The device according to the first embodiment works as follows.

The device shown in FIG. 1 - Fig 3, is delivered to the place of its installation by simple freight transport.

The device operates as follows.

The device shown in FIG. 1 - Fig 3, is manufactured and assembled according to the design documentation and then delivered to the place of its installation.

The device with the help of a crane and installers is mounted at the place of its operation 1.5-2 meters lower and higher than the waterline.

On the surface of the object 3, two upper fastening holding elements 4 are welded onto which the ends of the rods 5 are fixed, and two lateral fastening holding elements 6 for fixing the hydraulic jacks 7 on the flat surface of the object 3. Using the hydraulic jacks, the device is pressed by the installers to the surface of the object 3. Then from the inside the space formed by the flat surface of the object 3 and the inner surface of the device, water is pumped out by a hydraulic pump (not shown) connected to the pipeline 12. A check is made sealing and drying is carried interior surfaces. After that, personnel descends along the technological ladder 10, which checks the device for complete sealing, and then performs cleaning, applying anti-corrosion and ice-protective coatings inside the device to the surface of the object 3.

After completion of repair work, the device is dismantled and transported to the storage place.

Using the proposed device allows you to apply to restore the surfaces of objects of a variable waterline, operated in sea water, in open and closed waters of the sea.

The device allows for the regulation of buoyancy by filling the ballast compartments, as well as the volume and depth of the internal dry working space up to 3 meters above and below the waterline.

The device is manufactured in the factory and is easy to assemble at the location of the object.

The presence of protective hatches allows to increase the degree of safety during work in the conditions of changing weather conditions when the water surface of the water area is rough.

The device passed industrial tests and showed high reliability in operation.

Claims (1)

A device for carrying out repair work on the underwater parts of hydraulic structures, containing a sectioned housing connected to the object being repaired through sealing elements, the housing is made with the formation of a closed chamber with side walls, a bottom and a technological platform in which a profile hole, side and upper fastening holding elements are made , power jacks, ballast compartments and a water pumping pipeline, the lower end of which is located at the bottom of a closed chamber, characterized in that it contains inclined rods pivotally fastened with lower ends on the housing, and the upper ends of these rods are connected through the upper fastening holding elements with the hydrotechnical object being repaired, a guard rail made over the technological platforms, a vertical gangway installed at the edge of the profile hole, while the power jacks, located on both sides of the housing, are connected through lateral fastening holding elements with the hydraulic object under repair.

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