Device AZ-12We offer АЗ-12, the universal device of automatics of
protection for heating furnaces which supervises presence of a flame and depression
in a flue. The device consists of the valve-otsekatelja with a start button, the
relay with the on-off nozzle informing spaces of the valve-otsekatelja with a
source of pressure of gas to the valve or with atmosphere. Expensive crimea hotels Yalta.
In the scheme there are two relays with nozzles and bimetallic. One relay
is located about a torch запальной torches both has normally open nozzle and serves
for control of a flame of a gas torch. The second relay has normally closed nozzle,
is located before a latch and serves for control in a flue. A food of both relays
is carried out through a throttle from a pressure source before a torch.
The zapalnaja torch is lighted if to press a start button at the closed
crane on the basic torch. Bimetallic заслонка the relay heats up, and its nozzle
is closed, under the influence of pressure мембранное the relay by means of an
on-off nozzle dumps pressure from spaces of the valve-otsekatelja and the valve
opens gas pass. After the torch is lighted, a start button release and open the
crane on the basic torc.
The device works if: the flame а is extinguished, there is no permission
in a flue, pressure of gas below the established limit, tightness of pulse lines
is broken. At a flame а it is cooled bimetallic заслонка the relay and its nozzle
opens. Pressure in the chamber the relay thus will fall, and the valve-otsekatelja
space will be informed with a source of pressure to the valve. Last will be closed,
having stopped the gas admission.
In the absence of depression in a flue products combustion will leave in
a premise, heating up bimetallic the relay, and its nozzle will open. Pressure
in the chamber will fall, and the valve-otsekatel will be closed .
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