CS201344B1 - Automatic draw-away system control circuitry - Google Patents

Description

The invention relates to automatic exhaust control of devices which utilize incineration devices in which the power input can be controlled, for example in the production of expanded perlite. During the start-up cycle, the exhaust part of the device is ventilated up to the start of the burner and the start-up to the desired temperature value, and it is necessary to automatically control the exhaust so that during this cycle during the burner start-up cycle, for example in the heat treatment of bulk solids, in particular in the production of expanded perlite, or in the production of steam, water heating, etc.

So far, no automatic tension control is utilized, for example, for an expanded perlite production line that automatically controls the thrust ratios at the start and burner start. During the start-up cycle after the burner is lit, its output increases to a certain level, and when it reaches its start, it begins to decrease and stabilizes at the desired power.

For this reason, it is necessary to ensure a sufficient flue gas evacuation during the start-up cycle, otherwise the burner flame goes out, which makes it impossible to fully automate the devices, such as the expanded perlite line.

These drawbacks are eliminated by the wiring for automatic defrosting of devices according to the invention. Circuit for automatic control of the off-take of equipment, for example on the line for the production of expanded perlite, in which they are automatically controlled by means of combinations

201 344

201 344 of timing and auxiliary relays, outlet contacts of diffuser and servo actuators and conical switch positioning of the switches, according to the invention, winding for opening of the first servo actuator connected has filled the contact of third auxiliary relay in aero and for closing the first servo drive, the cut-in contact of the second auxiliary relay in the terminal 11 and the expansion contact of the second actuator switch 8a of the first servo drive to the latter alternating voltage is applied. According to the invention, the winding for the opening of the second actuator is connected to the third auxiliary relay contact, to which the second winding contact of the second regulator is connected in parallel and the contact of the first auxiliary switch of the second auxiliary switch is closed. the third auxiliary relay in series with the first exhaust contact of the exhaust regulator and the second contact of the second actuator of the second actuator to the alternating voltage, and the second auxiliary relay lead is connected to fill the contact of the first auxiliary relay and fill the time relay contact to alternating voltage. According to the invention, the coil of the third auxiliary relay is connected through a full contact of the first after the monthly relay and expanded the contact of the timing relay to the polished alternating voltage. According to the invention, the coil of the first auxiliary relay is connected to its own burner automatics parallel to the flame igniter, and the timing relay socket is connected to an apparent voltage that has filled the contact of the first auxiliary relay.

The use of this circuit according to the invention increases the safety of the prol and reduces the specific energy consumption.

The accompanying drawing is a circuit diagram of the invention. The device comprises a cha sového relay Bj ₀ which means pomoonýoh relay Β _(Bg, B ^, regulator exhaust M ₁ and aervopohonov SP ₁ and SP ₂ controls the position klaplek. Extreme positions of the first flap defining a second konoové switches KP0 ₂ KPZg. Krajné the positions of the panels are indicated by the indicators H ₂ , H ₃ , H ₄ , H _{5. The} KoS is connected alternately to the control device and the switches PR ^ and PRg are in the position for automatic control, then the first auxiliary relay B ^ At the same time, the pilot light Hp lights up to indicate the ignition of the flame.They filled the contact of the first auxiliary relay B ^ and opened the contact of the timing relay Β ^ θ to switch on the third auxiliary relay B ^, which filled it with the contact! the actuators SP ₁ and SP ₂ and they start to open the flaps after the set time on the time relay B ₁₀ , which is The length of the burner start loop is applied to the coil of the second auxiliary relay B ₂ while the contact of the second auxiliary relay B _{2 is} opened and the current to the third auxiliary relay B B is cut off. Through the contact of the second auxiliary relay B, it is fed into the winding of the first actuator SP _{1 for} closing the first flap. This flap is brought to the prong position, which is set by the limit switch KPZ ^. By opening the contact of the auxiliary relay B ^ and the first filling the contact of the exhaust regulator M ₁ or by the second filling contact Y _{2 of} the exhaust regulator, the position of the second flap is controlled by automatic controls. For example, in the production of expanded perlite, exhaustion is thereby automatically controlled during the start of the burner cycle. The switches PR ₁ and PR ^ allow to open and close the SP ^ and SP ₂ actuators manually in one position using buttons A ^, A ^ ₂ , A ₂₁ , A ₂₂ and in the second position enable the actuators SP ^ and SP _{2 to be} controlled automatically .

Claims (1)

OBJECT OF THE INVENTION Wiring for automatic recovery of equipment, for example, on an expanded perlite production line, in which ea automatics control via a combination of timing and auxiliary relays, outlet contacts of the exhaust regulator and e-drives and terminal position limit switches, (SP ^) is connected to the closing contact of the third auxiliary relay in series with the NC contact of the first switch (KPC ^) of the first electric actuator (SP ^) on the alternating voltage and the winding for closing the first actuator (SP ^) the auxiliary relay ( ^B 2) ⁱⁿ series with the NC contact of the second limit switch (KPZ ^) of the first eervo drive (SP ^) to the same alternating voltage, and the winding for the second e-drive opener (SP ₂ ) B ^ /, to which the second make contact reg of the exhaust switch (M ^) and in the series oez the NC contact of the first switch (KPO ₂ ) of the second electric actuator (SPg) on the alternating current and winding for closing the second actuator (SPg) with the first closing contact of the second limit switch (KPZ ₂ ) of the second actuator (SP ₂ ) to the same alternating voltage, the coil of the second auxiliary relay (Bg) being connected via the NO contact of the first auxiliary relay (B ^) and θ / to alternating voltage and the coil of the third auxiliary relay (B ^) is connected via the make contact of the first auxiliary relay (B ^) and the break contact of the timing relay (B.jq) to the same alternating voltage, the coil of the first auxiliary relay / B ^ / is connected to own burner automatics parallel to signal (H ^) of ignited flame and time relay coil (B ^ q) is connected to alternating voltages via make contact auxiliary relay / B ^ /.