SU1283825A1 - Device for signalling condition of working mechanism - Google Patents

Abstract

The invention relates to the field of automation of technological processes, is intended for use as a means of displaying information on mimic diagrams in static and dynamic states of actuators, having control bodies cBoi-rx end positions and controlled by two discrete, long-lasting, potential effects of less, more, and can be used in local and centralized control and monitoring systems in the gas, chemical, energy and other industries in cases when the position of the actuator is not sufficiently quantitative to signal the position, but only an obvious qualitative characteristic of the state. The aim of the invention is to increase the informativeness of the device by signaling the intermediate static position depending on its previous direction of motion, which is achieved by introducing into the device an OR element, an AND element and a trigger. 1 il. W KD 00 00 00 tc SL1

Description

(21) 3918571 / 24-24

(22) 06/27/85

(46) 15.0Г.87.Bul, № 2

(71) Kiev Institute of Automatics na XXX congress of the CPSU

(72) E.I. Malakhovsky and A.K. Slavinsky

(53) 634.9 (088.8). .

(56) USSR Copyright Certificate No. 935994, cl. G 08 B 21/00, 980.

USSR author's certificate number 1126985, cl. G 08 B 21/00, 1983.

(54) DEVICE FOR SIGNALING THE STATE OF THE EXECUTIVE MECHANISM

(57) The invention relates to the field of automation of technological processes, intended for use as a means of displaying information on mimic diagrams in static and dynamic states of actuators, having cBoi-rx control bodies of end positions and controlled by two discrete, long-lasting, potential effects. The type is less, more, and can be used in local and centralized control and monitoring systems in the gas, chemical, and other industries. In these cases, when the position of the actuator is not sufficiently quantitative, it is only an obvious qualitative characteristic of the state. The aim of the invention is to increase the informativeness of the device by signaling the intermediate static position depending on its previous direction of motion, which is achieved by introducing into the device an OR element, an AND element and a trigger. 1 il.

W

KD

00 00

00

tc

SL1

11283825

The invention relates to the automation of technological processes intended for use as a means of displaying information on mnemonic diagrams of static and dynamic states of regulating actuators having control bodies of their final positions and controlled by two discrete, long-lasting, potential effects. more, and can be used in local and centralized: control and monitoring systems in the gas, chemical, energy and other fields This is the case when the position of the actuator is not quantitatively sufficient, but only in an inhomogeneous qualitative condition.

The aim of the invention is to increase the information content of the device.

The drawing shows a diagram of the proposed device.

The device contains a pulse generator 1, elements AND 2 and 3, elements OR 4 and 5, amplifiers 6 and 7., light). In the same initial state of the actuator, the final position of the actuator of the mechanism, the signal O, arrives at

5 input element R1PI 5 and the input element I.Sh-1-NOT 18, with the result that the indicator light 9 is turned off, the indicator light 16 is also turned off, because the element OR 21 is locked

 About all inputs are signals O, coming from the outputs of elements And 3 and 14 via the I1 bus of the final position of the actuator.

After-sending the control command

  the type is more on the control signal supply bus 13, which corresponds to the presence of signal 1 at the input of the OR-NOT 17 element and on. the inverted input 7 of the rigger 19; a control signal is sent to the actuator actuator along the control circuits and the latter starts to move to the side open i.e. in the direction of increasing its flow cross section. As soon as the tires 10 of the final position of the executive mecapism (Closed) show the signal O, the light indicator 8 turns on, which indicates the departure of the actuator 20

25

MA from its first final (closed) position, since the input of the element OR 4 from the output of the element AND 2 also receives a signal

At the same time, at the output ale indicators 8 and 9, tires 10 and 11 of the end positions of the actuator (respectively, Closed, Open), the control signal supply bus 12 for translating the actuator into the first end 35 ment And 3 appears: a pulsating position - (the signal is less type), the bus signal whose frequency is determined by - I3 of the control signal is applied to, the frequency of the generator is 1-shul-transfer of the actuator, this signal through the elements is the second end position (the signal is larger), the element 14, amplifier l 15, the light indicator 16, the elements OR NOT 17 and 185 trigger 19, the element AND 20 and the element OR 21.

The device works as follows.

In the initial state of performance

45

OR 5 and 21 enters the light indicators 9 and 16 5 that begin to shine with a blinking light, indicating the beginning of the transition process to open the actuator.

As soon as the actuator reaches its second end (open) position, on bus 11 the end position of the actuator, signal 1 is set, which translates the lights 9 and 1 b to an even glow.

The mechanism, for example, in the form of a stop-regulating or anti-surge device, 5 is in the closed state, i.e. in the first end position, at which the signal i arrives at the same time at the input of the ele-50 via the bus 10;

As soon as the actuator reaches its second end (open) position, on bus 11, the end position of the actuator results in a signal 1, which converts the lights 9 and 1 b to an even glow.

In the case when, during the transition process, the actuator from the first end breakage OR 4 and the input of the element OR-NOT 18.-55 to the second appears the result of this is an even dimming in its stopping between the indicator light 8 the first static position, the stop end position (the closing signal from the I3 feed bus

). In the same initial state of the actuator, over the bus 1 1 the final position of the actuator, the signal O arrives at

the input element R1PI 5 and the input element I.Sh-1-NOT 18, with the result that the indicator light 9 is turned off, the indicator light 16 is also turned off, because the element OR 21 is locked along

all inputs are signals O, coming from the outputs of elements 3 and 14 and through the bus I1 of the final position of the actuator.

After-sending the control command

The type is more on the control signal supply bus 13, which corresponds to. the presence of signal 1 at the input of the element OR NOT 17 and on. the inverted input 7 of the rigger 19, the control circuit receives a signal to the actuator drive and the latter begins to move in the direction of opening, i.e. in the direction of increasing its flow area. As soon as on bus 10 the final position of the executive mecapism (Closed) signal O is received, the light indicator 8 turns off, which indicates that the executive

MA from its first final (closed) position, since the input of the element OR 4 from the output of the element AND 2 also receives a signal

At the same time, the output of the AND 3 element appears: a pulsating signal, the frequency of which is determined by the frequency of the generator 1-shuls, This signal through the elements

35 ment And 3 appears: a pulsating signal, the frequency of which is determined by, the frequency of the generator 1 sh-shuls, This signal through the elements

but

45

50

OR 5 and 21 enters the light indicators 9 and 16 5 that begin to shine with a blinking light, indicating the beginning of the transition process to open the actuator.

As soon as the actuator reaches its second end (open) position, on bus 11, the end position of the actuator results in a signal 1, which converts the lights 9 and 1 b to an even glow.

In the case when during the transition process, the actuator mechanism is removed from the first final polarizer signal. In this case, at the output of the I1Sh-NOT 17 element, a signal appears, which enters one input of the AND 14 and 20 elements. At the other inputs of the same AND elements 14 and 20, there is also a signal l. On the third inputs of the same elements, both the 14 and 20 signals are equal to O and 1, respectively, since trigger 19, despite the removal of signal 1 from the control signal supply bus 13, retains its previous inverse state. Consequently, the indicator light 16 goes out and the indicator light 9 will be illuminated with a steady light, indicating that, when moving from the first end position (closed) to the second end position (open), the actuator stopped at the intermediate half-open static position.

When the actuator is in the second final (open) state and the control command of the smaller type is fed to the control signal supply bus 12 under the condition that the O signal on the bus 11 of the end position of the actuator appears, the indicator light is switched to blinking. 8, which is then brightened after the occurrence of signal 1 on the bus 10 of the final position of the actuator

If during the transition process of moving the actuator from the second (open) end position to the first (closed) end position, it is necessary to stop it, the control signal from the control signal supply bus 12 is removed. At the same time, at the output of the element OR-NOT 17, signal 1 appears, which is fed to one input of elements AND 14 and 20, on the other inputs of which signal 1 is also present. On the third inputs of elements AND 4 and 20, the signals will be equal} and О since the trigger 19 cqxpaunates its previous state. Consequently, the indicator light 9 will go out, and the indicator light 16 will be illuminated with a steady light, indicating that, moving from the second end position (open) to the first end position (closed), the actuator

 g fO J5 20

2838254

stopped in an intermediate semi-open static position.

Claims (1)

Invention Formula g fO J5 0 50 5 5 five 0 0 A device for signaling the state of the actuator, containing the first bus of the final position of the actuator, which is connected to the first (the input of the first OR-NOT element and the first input of the first element 1Ш-1, the output of which through the first amplifier is connected to the first light indicator, the second bus of the final position of the actuator, which is connected to the first input of the second ILG element and to the second input of the first element W 11-1-HE, the output of which is connected to the first input of the first element AND A pulse generator, the output of which is connected to the first &-; input of the second element And, and with the first input of the third element And whose signal is connected to the second input of the second element liJII-I, the output of which through the second amplifier is connected to the second light indicator The signal that is connected to the first input of the second element OR NOT and to the second input of the second element AND, whose output is connected to the second input of the first element I-fflH, is the second control signal supply bus, which is connected to the second input ohm of the third element And with the second input of the second D9M, element OR NOT, the output of which is connected to the second input of the first element I, the third amplifier,: the output of which is connected to the third 1 light indicator, which is: Now, in order to increase the information content of the device, the third element 1SPI, the fourth AND element and the trigger, the first control signal supply bus are connected to the first trigger input, the first output of which is entered into it; Connected to the third input of the first element I, the output of which is connected to the first input of the third element 1ShI, the output of which is connected to the input of the third amplifier, the second bus - supplying a control signal is connected to the second input of the trigger, the second output of which is connected to the first input of the fourth element And, the output of which is connected to the third input of the second element OR, the output of the first element OR is NOT connected to the second input of the fourth element AND, the output of the second element OR is NOT connected to the third input of the fourth element AND, output third ele2838256 And is connected to the second input of the third element OR, the second bus of the end position of the actuator is connected to the third input of the third element OR.