SU115293A1 - Device for automatic regulation of the water supply of the ship’s boiler - Google Patents

Description

The known devices for automatic regulation of the supply of water to steam boilers containing a float installed in the water column and a photoelectric sensor to which a relay acting on the valve is connected through a silyerating lamp do not provide reliable operation under vessel conditions during short-term oscillations. water level caused by the ship’s heave.

The peculiarity of the proposed device for automatic regulation of the supply of water to a ship’s boiler is that, in order to prevent the relay acting on the valve from tripping, with short-term fluctuations of the water level caused by the vessel’s pumping, a parallel connected resistance and a capacitor creating a time delay.

FIG. Figure 1 shows schematically an anti-duster sensor for automatically regulating the supply of water to a ship’s boiler; in fig. 2 - the electrical circuit of the sensor (a) and the principal electrical circuit of the device (b).

The sensor includes a housing 1 of a water column with a through window and a float 2 inside the case, glass 3, photo cells 4, illuminators 5, nozzles 6 for connecting a water indicating instrument, and a nut 7.

The circuit diagram of the device includes: a sensor, an electronic unit and an actuator (not shown in the drawing). The electronic unit serves to amplify the sensor signals and control the actuator, as well as an alarm.

The electronic unit is assembled on the lamp 8, one half of which is powered by an average photocell. A relay 9 incorporated in its anode circuit controls the operation of the actuator.

The second half of the lamp 8 operates from two extreme photovoltaic cells connected in series with each other.

№ 115293

A relay 10 is connected to the anode circuit of the half-lamp, which controls the signaling system (lamps 11).

The filament current of the lighting and electronic tubes is stabilized. The anodic voltage is also stabilized by a stabilizer 12.

The actuator contains a bypass solenoid valve.

The device works as follows.

When the water level in the boiler is insufficient, the float 2 in the indicator column is lowered, changing the luminance of the middle photocell 4. The signal from the latter, passing through the left working half of the lamp S, affects the output relay 9, which will work. Normally closed contacts of this relay break the power supply circuit of the actuator electromagnet. An electromagnet releases measles associated with a bypass valve. The latter is closed and the water enters the boiler. At the same time, its level in the water-measuring column rises, and the float 2 blocks the luminous flux entering the photocell 4 by changing its photocurrent. The output relay 9 returns to its original position and, with its contacts, turns on an electromagnet that opens the reset valve. Water enters the warm box, mine the boiler. After a certain period of time, when the water level drops, the process repeats again.

In order to prevent the relay 9 from activating in case of short-term deviations of the level in the boiler under the influence of rolling, a stabilizing link in the form of chains 13 and 14 is included in the control grid circuit. Here too, the level regulator 15 - sensitivity potentiometer is installed.

To provide remote monitoring of the water level in the boiler, an indicator — milliammeter 15 — is turned on in the anode circuit of the operating floor of lamp 8. The level indicator is displayed on the control panel and in the engine room. In addition, it can be installed in the wheelhouse.

Subject invention

A device for automatically regulating the supply of water to a ship's boiler, containing a float installed in the water column and a photoelectric sensor to which a relay is applied through an amplifying lamp, acting on a valve, characterized in that, in order to prevent the relay from activating during short-term fluctuations in water the ship’s roll, the resistance grid and the capacitor are connected to the grid circuit of the amplifying lamp, creating a time delay.