SU1304049A1 - Device for indicating conditions of actcating mechanisms - Google Patents

Abstract

The invention relates to signaling devices and is intended to be used as a means of displaying information on mimics of the status of shut-off and control and similar actuators having control bodies of their final positions and controlled by three impulse effects of the Close, Open and Stop types, 1 the operation of which determines not only their continuous continuous movement from one end position to another, but also the need for a temporary stop in the intermediate zone and can be used in local and centralized control systems in the gas, chemical, energy and other industries. The aim of the invention is to simplify the device, which is achieved by introducing an additional element AND and changing the functional relationships between the elements of the device. 1 il. i (L oo about 4 O 4 CO

Description

The invention relates to signaling devices and is intended to be used as a means of displaying information on mnemonic diagrams of the state of shut-off and control and similar actuators having control bodies of their final positions and controlled by three impulse effects of the type Close, Open and Stop, modes of operation which determine not only their long and continuous movement from one end position to another, but also the need for a temporary stop in the intermediate position uu and may life used in local and centralized control systems, gas, chemical, energy and industrial fields drgih,

The purpose of the invention is to simplify the device.

The drawing shows a diagram of the device.

The device contains information tires 1 and 2 of the end positions, indicators 3-5 positions, elements OR 6-10, element OR NOT P, triggers 12 and 13, pulse generator 14, elements AND 15-17, bus Open 18 bus Close 19, Bus Stop 20, elements And 21-24 and trigger 25.

The device works as follows.

The initial state of the elements of the device depends on the initial position of the actuator, as well as on previously issued commands. If the Close command is given, then a single logical signal is formed at the forward output of the flip-flop 13, and vice versa, if the Open command is given, then a single logical string is formed at the forward output of the flip-flop 25. a logic signal when the actuator is not in one of the extreme positions. It is taken as the initial initial position at which the actuator is completely closed. In this case, a single logical signal is received via the information bus 1 of the final position to the input of the element OR 6, which causes the indicator of the 3 position to glow evenly.

Two other indicators 4 and 5 polo

marriages are not light ts, as according to

five

five

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The mapping bus 2 and the output of the element OR NOT 11 receive zero logic signals. When the Open command is issued via bus 18, trigger 12 switches to the inverse state, and trigger 25 goes to the forward state. At the same time, the Open command is issued to the actuator drive via control circuits.

If the actuator starts to execute this command, then as soon as a zero logic signal appears on the information bus 1, indicating that the actuator has moved away from its closed position, the position indicator 3 goes off, and the position indicators 4 and 5 are blinking since the inputs of elements AND 16 and 17 receive single logical signals from the element OR NOT 11. from the inverse output of trigger 12, from the direct output of trigger 25, as well as pulses from the generator 14 pulses.

The flashing lights of indicators 4 and 5 indicate a transition process (movement) of the actuator in the direction of its opening. As soon as the actuator 0 is fully opened, a single logic signal arrives on the information bus 2 and the indicators 4 and 5 switch to an even glow, indicating that the actuator is completely open. If, before the completion of the full opening of the actuator, a Stop command is issued on the bus 20, the actuator stops. In this case, the trigger 25, due to the presence of a single logical signal at the input of the element 22, switches from the direct to the inverse state, as a result of which the position indicator 5 goes out and the position indicator 4 lights with a steady light.

The half luminescence of the actuator mnemonic, in which the 4 position indicator shines evenly, qualitatively signals an intermediate semi-open static state of the actuator, which occurs when the actuator moves from the first (closed) to the second (open) end position,

In the case of the filing on bus 19 of the command Close trigger 12 from the inverse, it goes to the forward state.

five

0

five

0

five

as a result, the indicators 4 and 5 go out, and the first indicator 3 begins to glow with a blinking light, which indicates (moves the actuator towards the closing side.

If the actuator reaches its final closed position, the 3 position indicator switches to a steady glow, indicating the final closed state of the actuator. If during the movement of the actuator towards its closure and a stop command is sent again via the bus 20, the blinking of the indicator 3 stops, and the position indicator 5 lights up steadily.

Since when the Stop command is issued, the trigger 13, due to the presence of a single signal at the input of the element 21, switches from the direct to the inverse state, with the result that a single logical signal is present at all inputs of the AND 23 element.

Claims (1)

Invention Formula A device for signaling the state of the actuator, containing the first information bus of the end position, which is connected to the first input of the first element OR, the first input of the second element OR, and the first input of the OR element NOT whose output is connected to the first input of the first element AND, the first input of the second AND element and the first input of the third element AND, the output of which is connected to the second input of the first element OR, the output of which is connected to the first position indicator, the second information bus of the final It is connected to the second input of the OR-NOT element and the first input of the third OR element, the output of which is connected to the first input of the first trigger, the first output of which is connected to the second input of the third element AND, the Close bus, which is connected to the second input of the third OR element, Open bus, which is connected to the second input of the second OR element, the output of which is connected to the second fo 40494 The first input of the first trigger, the second output of which is connected to the second input of the first element AND, the output of which is connected to the first input of the fourth element OR, the output of which is connected to the second position indicator, a pulse generator, the output of which is connected to the third inputs of the first and third elements And, the second the trigger, the first output of which is connected to the fourth input of the third element AND, the output of the second element AND is connected to the first input of the fifth OR element, the output of which is connected to the third indicator of the 15 third trigger, the first output of which is connected to the first input of the fourth element I, the output of which is connected to the second input of the fifth the OR element, the fifth AND element, the first input of which is combined with the first input of the sixth AND element, a Stop bus, characterized in that, in order to simplify the device entered the seventh element And, the bus Close is connected to the first input of the second trigger, the second output of which is connected to the first input of the seventh element And, you the stroke of which is connected to the second input of the fourth element OR, the Open bus is connected to the first input of the third trigger, the first output of which is connected to the fourth input the first element And, the bus Stop is connected to the first input of the fifth element And, the output of which is connected to the second input of the second trigger, the second information bus of the final position is connected to the third inputs of the fourth and fifth OR elements, the second output of the first trigger is connected to the second inputs of the second and fourth elements AND and the second the input of the sixth element AND, the output of which is connected to the second input of the third trigger, the second output of which is connected to the third input of the second element AND, the first output of the first trigger connected to the second inputs of the fifth and seventh element AND, the output of the element OR is NOT connected to the third inputs the fourth and seventh elements And the output of the pulse generator owls connected to the fourth input of the fourth element I.