SU49954A1 - Device for signaling the maximum and minimum level of liquid in the tank - Google Patents

Description

Devices are already known for signaling the maximum and minimum level of liquid in a tank, consisting of a float that controls, depending on the level of the liquid, the closing of one or another pair of switch contacts that changes the direction of the current in the signal circuit into which the signal device is connected.

The proposed device for signaling the maximum and minimum level of the liquid in the tank relates in its design to the discharge of the above known devices and has the peculiarity that an electromagnetic stopper is included in the signal circuit through the switch to prevent the installation associated with the direction switch current directional buttons to a position that does not correspond to the actual position of the level.

In FIG. 1 shows a schematic view of the proposed device; FIG. 2 - electric circuit of the device; FIG. 3 and 4-position ne, switch with signal buttons when supplying fluid to the tank when parsing liquid from the tank.

The proposed device (Fig. 1) consists of a contact mechanism mounted on a tank with a liquid, made in the form of a hermetic box 1 filled with oil, in which a contact roller is located predominantly of a controller type with scraping contacts, having an axis 2 with a rigidly mounted driver fork 3 s load- #, keeping it in a neutral position. The contact roller deviates to its extreme positions by the sleeves 5 and 6 on the cable, passed through the rollers 9 with the float 7 and the load 8.

The electrical circuit of the proposed device is composed of a contact mechanism mounted on a tank with a liquid, connected by a contact roller with a battery of batteries. The contacts 12, 13 of the contact mechanism are connected to two terminals, one of which 13 is grounded, and the second is connected to the line wire 20 connected to a signal receiver installed in a water-pumping room. The signal receiver consists of a bell 14 and an electromagnetic stopper 16 included in the signal circuit by means of a switch 15. When stopper 16 is turned on in the signal circuit, its core locks the switch 17, which turns on the battery 10 in series for increasing the battery or opposite it and having a ground 19. Switch 1 is equipped with two buttons labeled, swing and

„Full, showing the staff the position of the liquid in the tank at each moment.

At the neutral position of the powered plug 3, no current is obtained in the circuit; When the water level is in the tank, the highest or lowest floating plug becomes either one or the other extreme position, closing one or the other contacts B on the tank contact mechanism, therefore the current from the battery / 7 that is located on the tank contact mechanism is sent to the line and wire 20 to the receiver of the signals in the water pumping room, and then plus or minus the JO batteries at that receiver.

At the highest or lowest water level in the tank, the current from the local battery // is directed from the plus through the contact mechanism via line 20 or ground J8, depending on what the specified maximum water level and plug position 3 of the contact mechanism is.

For example, with a full tank, the vidka becomes one extreme and the contact mechanism closes the left pair of contacts, and then the battery 7 / tank current flows from the plus through the contact mechanism and is directed through line 20 to the pumping station to the signal device, where the call goes through switch 75 f4, a switch with two contacts 77 to the minus of a local battery W, from where it comes out of the plus through a switch with two buttons 77 to ground J9. On entering the grounding 79k of the contact mechanism, the current through the left side of the rotating contact roller returns to the minus of the local battery 77. This achieves that the local batteries reinforce each other by connecting in series, and the bell J4 is activated.

When the upper push button of the switch 75 is pressed, the bell is turned off, and the current coming from the line L is already directed through the stopper 75, the measles of which is drawn in, which makes it possible to push the button out of the switch with two buttons 77 with the inscription "swing" The signal button "full" is thrust into the device and instead of it. With this switching, we get the current from line 20, already directed towards the positive side of the local JO battery, when the signal device of the water-pumping room, therefore, the current stops and an electrical lock 77 begins to act, no longer allowing pressure on the signal button until the contact mechanism at the lowest water level in the tank, no current will flow through the wire 20 to the alarm device in the minus direction. In the case of loosening the battery d, the call will be weaker, and the electric shock meter will completely stop working, which makes it impossible to switch using the switch 77, 27. For this emergency, there is a special button that allows you to lift the stopper and make the switch - This button is closed special cap and sealed; breaking the seal, opening the cap and raising the bollard with the T button says that it is weak and requires immediate inspection and resumption of normal activity.

The subject matter of the invention.

A device for signaling the maximum and minimum liquid level in a tank using a float that controls, depending on the level of the liquid, the closing of one or another pair of contacts of a switch that changes the direction of the current in the signal circuit, characterized in that the electromagnetic circuit is switched on the signal circuit through switch 75 a stopper J6, which serves to prevent the installation of the direction buttons connected with the current direction switch to a position that does not correspond to reality. to the author's testimony of A. and F. G. Matrosov No. A. Rozhnovsky 49954