SU701861A1 - Apparatus for protecting circulation systems of a vessel against overgrowing - Google Patents

Description

(54) DEVICE OF PROTECTION AGAINST THE GROWING OF SHIP CIRCULATION SYSTEMS

The invention relates to shipbuilding, in part, to anti-fouling devices for ship circulation systems.

A device for protection against fouling of ship circulation systems is known, comprising an insulating insert in a pipeline and two electrodes connected to a current source and attached to an insulating insert 1

In the known device, only the anode is in the electrolyte, which creates large leakage currents and can lead to electrocorrosion of the adjacent sections of the circulation system. In addition, in the early device, the issue with the supply of current to the electrodes, t, k, f, the entrance of the water to the place of the supply of current causes the destruction of t approx. Parts and this reduces the effectiveness of antifouling.

The purpose of the invention is to increase the effectiveness of anti-fouling.

For this purpose, the electrodes are made in the form of flat plates installed at the same distance from each other and parallel to each other in the flow part of the pipeline, and

the plates of one of the electrodes are smaller in size along the axis of the pipeline than the plates of the other.

In addition, at the ends of the short plates in the same plane with them additional plates are installed, connected to the anti-burner with respect to the short plates to the pole of the current source, and all

0 electrodes are made of copper,

Fig, 1 shows a longitudinal section of the device; FIG. 2, section A-A in FIG. 1, FIG. 3, section B — B FIG. 1,

five

The proposed device consists of a body 1 with flanges 2, a body 1, a room: an insulating insert 3, in which electrodes 4 and 5 are installed,

0

Electrodes 4 and 5 are made in the form of flat parallel plates. Electrode plates 4 have a smaller size in the longitudinal direction fno of the pipeline axis) than etd-5 plates of Troda-5 and, - :: are symmetrically located between them, At the ends of electrode 4, additional plates 6 of electrode 5 are installed, which are also insulated Box 3.

0

The electrodes 4, 5 and 6 are located in the flow chamber 7,

The subspecies current to the device is made by studs 8 made of VT1-0 alloy, to which a cable 9 connected to a current source (not shown in the drawing) is connected, the cavity 10 is filled with a damping fluid and communicates with the cylinder 11 and the piston 12, the cylinder 11 is equipped with a protective cover 13 with holes.

; The device works as follows. ; On the electrodes. 4, 5 and 6 supply the direct current. Under the action of current, dissolution of the electrode occurs, which is connected to the positive field of the current source and the release of copper ions.

Calcium and magnesium precipitates as a result of alkalizing the medium. When the cathode is covered with sediments of a certain thickness, polarity changes on the electrodes. The former copper layer dissolves, resulting in precipitation drops from the electrode and pumped water is removed from the protected system. The surface of the electrodes is constantly updated. The parameters of the device are stable.

The current is applied by studs 8 of alloy VT1-0, the potential for breakdown of which is greater than 8 volts, while the voltage on the device does not exceed 3 volts. When sea water gets to the studs 8, their anodic dissolution does not occur.

When the device is immersed to a depth, it undergoes pressure on both sides and in order to equalize the pressure in the cavity 10 on both sides a piston 12 is pressed, which, moving in the cylinder 11f, transfers the ambient pressure to the damping fluid.

The fabrication of both copper electrodes makes it possible to apply current reversal. When reversing, the former cathode becomes an anode and drops the cathode deposit.

The design of the electrodes eliminates leakage currents that cause unproductive current losses.

and strong electro-corrosion of nearby metal surfaces.

The reduction of leakage currents is achieved by the fact that both electrodes are in the electrolyte and they are located in such a way that the current between them is localized by the volume of the set of electrode plates. Further localization of the currents between the electrodes is achieved by introducing additional side electrodes.

The implementation of current supply by parts of materials having significant anodic polarizability ensures high reliability of current supply

This invention can be used in all sectors of the national economy to protect against fouling sidetom using the sea in

Claims (1)

Invention Formula 1, Antifouling protection of ship circulation systems, containing an insulating insert in the pipeline and two electrodes connected to the current source and attached to the insulation insert, so that it is so that, in order to increase the efficiency of anti-fouling protection, the electrodes are made in the form of flat plates installed at the same distance from each other and parallel to each other in the flow part of the pipeline , and the plates of one of the electrodes are smaller in size along the pipeline axis; than the plates of another 2, the device according to claim 1, about 1 tl, which is that the ends of the short plates in one plane with them have additional plates connected to the pole of the current source opposite to the short plates. 3 The device according to claim 1, about tl and that with the fact that all the electrodes are made of copper. Sources of information taken into account in the examination 1 „USSR Author's Certificate No. 317721, cl. C 23 f 13/00, 1970, mr / 7 Fig2 Puz.D