SU1251142A1 - Pneumatic checking and signalling device - Google Patents

Abstract

The invention relates to automation means, namely, control and alarm devices of a group of similar units. The device contains modules for controlling parameters and actuators, grouped by the number of units. The number of control modules in each group is equal to the number of parameters and actuators. In each group, a common alarm module is installed. When the parameter deviates from the specified value, a common sound and light signal is first generated, indicating the corresponding unit. To determine the reject parameter, an aggregate call signal is given. 2 hp ff, 3 ill. i heard 4 ;; tc

Description

The invention relates to automation means, namely, control and signaling devices, and is intended for use in centralized monitoring and control systems.

FIG. 1 shows a diagram of one group of control modules; in fig. 2 is a schematic of the device alarm circuits; in fig. 3 shows analyzer execution schemes.

The pneumatic control and signaling device contains control modules 1, grouped according to the number of controlled units. The number of control modules in a group corresponds to the number of monitored parameters of a single unit. Each control module (Fig. 1) includes analyzer 2 with the first 3, second 4 and third 5 inputs, the first memory node 6, consisting of a relay 7 and the OR element 8, the second memory node 9, consisting of a relay 10 and element OR 11, the first 12, the second 13, the third 14, the fourth 15 relays, the first 16, the second 17 and the third 18 pneumatic transducers.

The switching input 19 of the memory node is connected to the acknowledge button 20. The switching input 21 of the memory node 6 is connected to the output 22 of the second memory node 9, with the normally closed nozzle of the relay 13 and with the positive camera of the relay 12. The output 23 of the first memory node 6 is connected to the negative camera of the relay 12 and to the chambers of the pneumatic electric converters 17 and 18.

The switching input 24 of the second memory node 9 is connected to the channel 25 of the time setpoint, and the switching input 26 to the output of the analyzer 2 and to the normally closed nozzle of the relay 14 connected to the positive camera of the third relay 14 of the next module with its output.

The output of relay 13 is connected with the chamber of the pneumatic electric converter 16. The positive cameras of the relay 13 of all the control modules of the group are connected to the organ 27 of the call of the corresponding unit. The output of the pneumoelectric transducer 17 is connected to the normally open contact of the pneumoelectric transducer 16.

Normally closed contacts of converters 16 of all control modules of the group of the last unit (Fig. 2) are connected to the alarm test button 28. The outputs of pneumatic-electric transducers 16 of each group are connected to the normally closed contacts of pneumatic-electric transducers 16 of the same-name control modules belonging to the group of the previous aggregate. The transducer outputs 16 of all the control modules of the group of the first unit are connected to the signaling devices 29 deviations. The positive chambers of the third 14 and fourth 15 relays of the first control module are connected to the power channels, the output of the third relay 14 of the last control module is connected

with channel 30 for signaling the normal state of the unit.

Module 31 of the general signaling system in each group consists of a generator of 32 pivmatic pulses, the fourth 33, the fifth 34 and the sixth 35 pneumo-electric converters and the fifth relay 36. The minus camera of the relay 36 is connected to the output of the fourth relay 15 of the last control module of the group. Relay output 36 is connected to cameras

pneumo-electric converters 33 and 34 and with the generator 32 input, the output of which is connected to the chamber of pneumatic electric converter 35. The output of pneumatic electric converter 35 is connected to the normally closed contacts of the second pneumatic electric converters 17 of all control modules of the group and to the normally open contacts of the pneumatic electric converter 34 connected with its output channel 37 common light signaling malfunction.

The normally closed contact of the pneumoelectric transducer 34 is connected to the outputs of the first pneumoelectric transducers 18 of all control modules of the group. The output of the electric motor 33 is connected to the channel 38 of the general sound alarm.

The execution of the analyzer for monitoring the analog parameter is shown in FIG. Behind. It contains the first 39 and second 40 comparison elements, the negative cameras of which are connected respectively to inputs 3 and 5, and the positive ones to the outputs of the first 41 and second 42 repeaters with a shift connected to the input 4 of the analyzer. The outputs of the elements of comparison 39 and 40 are connected to the relay 43.

The diagram shown in FIG. For, realizes the following relation:

Flight 1 at Н + А П Н -Дг; РВЫХ О at Н -f д., Where П is the value of the parameter;

H - nominal value;

PIR - output signal; AI jAj - values of permissible deviations (upper and lower) parameter from the nominal. A variant of the analyzer for controlling actuators (IM) is shown in FIG. 26 It is designed as a relay 44, the nozzles and the input chamber of which are respectively connected to the inputs 3, 5 and 4 of the analyzer.

The diagram shown in FIG. 36, pea

lizhes logical function

1 - Lulre Lowe Xynp Xj,

where Y is the analyzer output signal;

Hulr signal setting the position of IM; - signals open and closed

provisions of IM.

Pneumatic alarm device operates as follows.

In analyzers 2 of all control modules 1, the parameters arriving at inputs 3 and 5 are compared with the setpoint signals arriving at inputs 4. When the values of the parameters correspond to the reference, the output signals of analyzers 2 are equal to "1. At the same time, at the outputs of the relay 14 of all control modules and, therefore, at the output of the relay 14 of the last control module of each unit in channel 30, a signal "1" appears, which indicates that all actuators of this unit occupy the specified positions and all analog parameters within specified limits.

This signal can be used in the control system to generate control actions, for example, as a command to set new control signals to the actuators.

If any parameter is rejected beyond the permissible limits, a signal "O" is generated at the output of the corresponding analyzer 2, which leads to the appearance of a signal "O at the output of the relay 14 of this and all subsequent modules 1 of the control of this unit, as well as in channel 30.

When a given parameter value changes, the initial process often lasts a considerable amount of time. This time, called the control time, is set individually for each parameter. A ' 1 control time elapsed signal is applied through time set channel 25.

As long as the transient process reaches the parameters of the new setpoint (the signal in the channel 25 of the time setting is equal to "O), the corresponding parameter deviation indicator 29 cannot be triggered, since it cannot work out the memory node 9 and the relay 13.

If the error of the signals lasts longer than the specified control time of the transient process, the channel 1 sends the signal "1. This leads to the operation of node 9 of the memory of the corresponding control module 1 and the appearance at the output of relay 12 of the signal “1. The output signal “1 relay 12 leads to the appearance of the signal“ O at the output of the relay 15 of this and all subsequent control modules, which in turn triggers the relay 36 of the general alarm module 31.

The signal "1 at the output of the relay 36 causes the switching on of the generator 32 pulses, as well as the appearance of the signal" I in channel 38 of the general sound alarm of malfunction through the converter 33 and the appearance of a pulsating signal in channel 37 of the common light signaling malfunction coming from the generator 32 through converters 33 and 34.

five

Thus, the operator first obtains general information about the occurrence of a fault on a given unit, and then can determine the specific parameter causing this condition. For this, the signal "1 call of the unit from the unit 27 of the call of the unit" is given, which causes the relay 13, converter 16 and the indicator 29 to flash with a blinking light through the controller 17 of the control module to which the deviated parameter is connected.

To remove the flashing light, a signal must be given from button 20, which will trigger the memory node 6 and switch the converter 17, simultaneously operate the relay 12 and 15, turn off the relay 36 and generator 32. The circuit will return to its original state when a signal appears "1 at the output of the analyzer 2.

When the signal "1 from button 28 is turned on" (for testing), all signaling devices 29 are turned on.

The analyzer for controlling the analog parameter (Fig. 3a) works as follows.

Channel 4 is given a signal of a given value of the H parameter, and through channels 3 and 5 a signal of the monitored parameter P.

The output of the repeater 41 generates a signal of the upper boundary value (H + AI), and at the output of the repeater 42 a signal of the lower boundary value (P-Dg) of the parameter. At the output of the comparison element 39, the signal "1 under the condition + D is generated. At the output of the element 40, the signal" 1 appears under the condition. At the output of the relay 43 and, therefore, at the output of the analyzer, the signal "1 is formed under the condition. The meter is located in a zone defined relative to the rating.

When the parameter value is greater than the upper limit value (+ Ai) or less than the lower limit value (R), the signal "O" is generated at the output of the relay 43.

When monitoring the state of two-position actuators (Fig. 3 b), the analyzer is sent via channel 4 by the position reference signal Hu p, and via channels 3 and 5, the signals from the limit switches of the open X and closed positions, respectively. At the output of the relay 44 and, therefore, analyzer 2, a signal Y is formed, the value of which is equal to "1 when the condition Y is fulfilled VHynp Xs, i.e. when the Hupr 1 control signal is applied to the MI, which specifies its open position, and it is really open, i.e. x 1, or when a Hupr O signal is applied to it specifying the closed position, and the MI is indeed closed, i.e. Xj 1. If these conditions are not met, i.e. in the wrong position of the actuator, on

0

five

0

five

0

five

five

the output of analyzer 2, a signal is generated "O.

Claims (3)

1. A pneumatic control and signaling device containing control modules, each of which includes an analyzer with first, second, third inputs, a non-shared memory node, connected by its on input with a handshake button, shutting off the input and output of the first memory node respectively, with the positive and negative cameras of the first relay, the first, second, and third pneumo-electric converters, and the output of the second pneumo-electric converter is connected to the normally open contact of the first inverter , and a common alarm module, made in the form of (pneumator puller;, the fourth, fifth and sixth pneumatic electropower generator, the input of the pneumatic pulse generator connected to the camera of the fourth pneumatic electric transducer, the output of which is connected to the pneumatic generator pulses connected to the camera of the sixth pneumoelectric converter, and the output of the fifth P1.; evmoelektroobravodatel connected to the common light signaling channel Reference, characterized in that, in order to expand the functional possibilities of providing control of a group of similar units, the control modules are combined into 1 unit by the number of units with the number of modules in each group equal to the number of monitored parameters on the unit, and each equipment is} mod.h what is the general cHriilization, and the outputs of the first pneumatic electric converters of the control modules of each group are connected to the normally closed contacts of the first pneumatic electric converters of the same name control modules of the gr The modules of the previous unit, the normally closed contacts of the first control unit of the control modules of the group of the last unit are connected to the alarm test button, the outputs of the first pneumatic-electric converters of the coptrol modules of the first unit are connected to the parameter deviation alarms, and in each control module the second memory node is additionally installed, the second one the third and fourth relays, with the input of the second memory node being connected to the time set channel, and the output connected to off the first input of the memory node and 1251142g normally closed sogyu second relay, the analyzer output is connected to the normally closed third relay nozzle, connected to the positive chamber of the third relay of the next group control module, and to the shutdown input of the second memory node, the output of the second relay is connected to the camera of the first pneumatic-electric converter, positive the camera - with the body of the call unit, the output of the first node memory 10 ti connected to cameras second n third pneumo-electric converters, the output of the first relay is connected to the negative camera of the fourth relay connected to the positive chamber of the fourth relay by its next JJ control module, the positive cameras of the third and fourth pe.ie of the first control module of the group are connected to the power supply channel, the output TpCTb o of the relay module Coptrol Connection i: sanajiOM. ih- otski HOpMajJbiioi O state of the unit,: - and 20 each module of the common signaling input of the fifth relay, the Km-ieria microclipper of the co-opa keni ena with the output.) The last relay of the last mode: 1I control- groups of 1nkogo unit, the output of the first p-lo is connected: ; , to the input of the generator emitter; 1 pulses,: П51khod luecToro ppe1-1MO le-yy:; transform, 1; associated with pormalis; , by the steep contacts of the second transducer electros; -) - all modules of all modules; optrol with a small open contact with a pneumatic electromotive transducer of a transformer, chamber; - which from (e-dipper with the output IIHTOJ O relay, and a normally closed contact with the outputs of the third pneumatic electrical transform; of all modules of control, the collectives of this a | -regata. 2. The device according to claim 1, characterized in that 35, in order to monitor ana; firstly, the analyzer contains D1; and the repeater with a shift, two elements of comparison to m) ex-membrane relay with spring; " Ipoy backwater, with the first and third inputs. 1 izato) and co-dnepi with minus chz che1, 1,: and eleuite compared, the second entrance apal: 1 of the drive through the first and second noBTOpiri-e p-; The co is connected to the plus cell of the comparison elements, the outputs of which are connected to the input cameras 1 and the relays, communicating with their 45 output with the output of the analyzer. 3. The device of claim 1, characterized in that, in order to control the actuators, the analyzer is made in the form of a three-membrane relay with a backpressure meter, normally closed and normal; open soy40 50 which soyo.a.yyeny respectively} about the top and the inputs of the analyzer, the camera is controlled with the input of the analyzer, and the output is connected with the output of the analyzer. normally closed sogyu second relay, the analyzer output is connected to the normally closed third relay nozzle, connected to the positive chamber of the third relay of the next group control module, and to the shutdown input of the second memory node, the output of the second relay is connected to the camera of the first pneumatic-electric converter, positive the camera is with the body of the call unit, the output of the first memory node ti connected to cameras second n third pneumo-electric converters, the output of the first relay is connected to the negative camera of the fourth relay connected to the positive chamber of the fourth relay by the next control module, the positive cameras of the third and fourth pe.ie of the first control module of the group are connected to the power supply channel, the output TpCTb o of the relay module of the Coptrol module connection i: sanajiOM. ih- otski HOpMajJbiioi O state of the unit,: - and 0 each module of the common signaling input of the fifth relay, the Km-ieria microclipper of the co-opdia ka-ieria with the output.) The last relay of the last mode: 1 I control-control of 1 unit, the output of the first p-lo is connected: ;  to the input of the generator eimpic; 1pulses,: П51khod luecToro ppe1-1MO le-yy:; define 5; 1 is associated with pormalis; , by the steep contacts of the second transducer electrically transformed ;-) - all modules of all modules; optrol with a small open contact with a single circuit of a pneumo-electric transducer, a chamber; which was connected to the outputs of a third electromotive transducer with the outputs of a third relay; of all modules of control, the collectives of this a | -regata. 2. The device according to claim 1, characterized in that 5, for the purpose of monitoring ana; firstly, the analyzer contains D1; and a repeater with a shift, two elements of comparison to m) ex-membrane relay with spring; " Ipoy backwater, with the first and third inputs. 1 izato) and co-dnepi with minus chz che1, 1,: and eleuite compared, the second entrance apal: 1 of the drive through the first and second noBTOpiri-e p-; The co is connected to the plus cell of the comparison elements, the outputs of which are connected to the input cells 1 and the relay, are communicated with their 5 output to the output of the analyzer. 3. The device of claim 1, characterized in that, in order to control the actuators, the analyzer is made in the form of a three-membrane relay with a backpressure meter, normally closed and normal; open soy0 0 which soyo.a.yyeny respectively} about the top and the inputs of the analyzer, the camera is controlled with the input of the analyzer, and the output is connected with the output of the analyzer. 37 Z8 srigL .76 -Yes