RU37997U1 - FILTER WATER INTAKE FISH PROTECTION - Google Patents

Abstract

A fish-protecting water intake filter, the flat walls of the water intake chamber of which are formed by chevron shutters and equipped with fish drain flutes, characterized in that the receiving chamber has the shape of a rectangular box, one wall of which is the wall of the drilling platform caisson with the water intake pipe through which it is mounted inside the chamber, against which the water inlet is mounted deflector.

Description

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The proposed utility model relates to devices for protecting juvenile fish during water intake from natural reservoirs and is intended to supply technological water to drilling platforms during iodine oil production.

Fish protection filters are known, in which chevron shutters located along the cylinder generators are used as a filter element, which determines the volume of the receiving chamber (see, for example, P.A. Mikheev. Fish protection structures and devices. Roma, M., 2000, pp. 216-217 ) The drum formed by the filtering blinds has on the outer surface of the blade in the form of a multi-start Arymedian screw, which creates a hydrodynamic field during rotation of the drum, limiting the contact of juvenile fish with the louvered surface of the receiving chamber. The known filter is not technologically advanced in manufacture and the conditions for its use are limited.

Based on the aggregate of similar essential features, the filter closest to the one declared can be adopted according to the application for utility model No. 2003130450/20 (032651) Fish-protecting water intake filter with a decision to grant a patent dated 12.11.03.

The known filter is a trihedral w vertical prism, each face of which is made in the form of a flat cartridge of vertical chevron blinds. A fish tap flute is mounted along each cartridge in the form of a pipe equipped with many nozzles whose axes are oriented parallel to the plane of the cartridge across the blinds. In operation, flowing out of nozzles

flutes under pressure the flow creates a hydrodynamic curtain on n, remove the fish to the appropriate cassette,

Since the well-known fish protection filter is designed for installation on floating drilling platforms for exploratory drilling, it is unsuitable for installation on stationary platforms for underwater oil production.

The claimed utility model was tasked with developing a fish protection filter to supply process water to a stationary drilling platform for underwater oil production under conditions of significant wave and seismic loads.

The problem is solved by the fact that a water intake fish protection filter is proposed, the flat walls of the water reception chamber of which are formed by chevron shutters and equipped with fish-flutes.

New in the proposed filter is that the receiving chamber has the shape of a rectangular box, one wall of which is the wall of the casing of the drilling platform with a water intake pipe led out through it into the chamber, against which the deflector is mounted against the water inlet.

The technical result of the claimed device lies in its successful layout. Solution in relation to specific operating conditions while simplicity of design and manufacturability of its manufacture.

Figure 1 shows the front camera; on Fig, 2 is a view along aa figl (fragment); in Fig. 3 - view B of Fig. 1 (side view); Fig. 4 is a diagram of the installation of the device.

walls - frontal, two lateral vertical, upper and lower - made of chevron blinds 2 (figure 2). The sixth wall is the wall 3 lying at the bottom of the pond caisson oil drilling platform (figure 4). For fastening the receiving chamber to the caisson, hooks 4 and loops 5 are provided, respectively, in the upper and lower parts of the wall 3 of the caisson. Through the wall 3 of the caisson, a water intake pipe b was passed, against which there is a deflector 7 mounted inside the water intake chamber. The deflector serves to equalize the flow rates of water between the front and side walls of the box. In addition, a fixed deflector significantly increases the rigidity of the frame of the receiving chamber.

The front wall of the receiving chamber is divided in half by a fish tap flute 8, which is a vertical pipe equipped with many nozzles 9, the axes of which are oriented parallel to the wall across the blinds 2, The side, upper and lower walls of the receiver chamber are also equipped with fish tap flutes, structurally similar to those described.

The device operates as follows.

When installing the device on a drilling platform, it is hung on hooks 4 of the caisson wall and secured with bolts fired through loops 5. When the pumps begin to work (not shown in the drawings), the seawater is sucked into the receiving chamber along the arrows B. Thanks to the presence of the deflector, the filter's efficiency increases. At the same time, water flows flowing from the nozzles of 9 fish tap flutes create a hydrodynamic veil around the filter, preventing the juvenile fish from contacting the blinds No. 1 with the chamber walls. With the appropriate choice of the proportions of the box, all its walls can be unified (interchangeable) among themselves, which reduces the cost of manufacturing the device and; it makes its assembly.

Claims (1)

A fish-protecting water intake filter, the flat walls of the water intake chamber of which are formed by chevron shutters and equipped with fish drain flutes, characterized in that the receiving chamber has the shape of a rectangular box, one wall of which is the wall of the drilling platform caisson with the water intake pipe through which it is mounted inside the chamber, against which the water inlet is mounted deflector.