SU781388A1 - Apparatus for control of multisection displacement-type hydrotransporting plant - Google Patents

Description

   . .

The invention relates to discrete automatic control devices for transport installations.

A device for pumping corrosive and abrasive liquids is known, comprising a control unit that can be used for sensors depending on the position of the surface of the section. La separating and working fluid controls the transfer of fluids G. Yu

However, this device does not automatically control the operation of the installation and control of the cycle and restore the operation of operations. . | 5

The closest technical solution to the proposed is a device for controlling a multisection hydraulic transport installation, containing 20 sensors of the upper and lower levels of the separation fluid installed on the U-shaped pipeline of each section, a three-way valve installed on each U-shaped pipeline and connected 25 to the pressure THAT drain lines, a three-way valve control unit, three memory elements, zero inputs of which are connected to the sensor outputs. , three-way valve position, CALL

the first and second memory elements pass through the first OR element to one of the inputs of the control unit of a three-way valve, another input of which is connected to the output of the third memory element, repair valves, actuators of which are connected to magnetic actuators, magnetic position sensors. valves, actuators for opening and closing repair hatches with sensors for controlling the opening and closing associated with the flushing unit of the corresponding section, the inputs of which are connected to the first and second control outputs of the control unit The npoNtiBKH node, the open and close outputs of the repair valves of the control unit of the washing unit are connected to the corresponding magnetic actuators, and the information inputs are connected to the outputs of the position sensors of the repair valves and the sensors to close the hatches 2. . ,

A disadvantage of this device is. the fact that this device also does not provide automatic control of the plant’s operability and control of the plant’s recovery operation,

The purpose of the invention is to improve the accuracy and improve the operating characteristics of the device.

This goal is achieved due to the fact that in the device for controlling a multi-section displacement hydrotransport installation in each section there are Two-time switch, second and third elements OR, fourth, fifth and sixth elements. and blocking relays, with single inputs of the first and fourth, Gr-memory elements through the closing contact of the blocking relay of this section and opening contact: the blocking relay of the previous section is connected to the output of the sensor of the lower level of the separation fluid of the previous section, and the fourth input of the fourth element -pam is connected to the output of the sensor of the lower level of the separation fluid of this section through the second element OR - to the single inputs of the third and memory cells and through the second opener posloyuyuschoy act blocking relay sections - with single inputs of the first and fourth memory elements subsequent sections vtroy input of the second OR gate coupled to the first output ec time switch associated with the output of the fourth memory element; zero input. That memory element is connected to the output of the upper level of the separation fluid of this section, connected through the third OR element to the unit input of the second memory element; the second input of the third element OR is connected via the second time relay with the output of the fifth electric memory and a single input. The sixth element, memory; whose output is connected to the control winding of the tripping relay of this section, the closing contacts of which are connected: between one another, with the OUTPUTS of the second

and the sixth elements of 1 m te are connected. with the command inputs of the control unit node prbmyvky. The disconnecting output of which is connected to the zero input of the sixth memory element. It is additionally borne out by the fact that the control unit is equipped with a washing unit soitoite from; three keys, a time relay, a memory element, three gate elements and four And elements, whose inputs are connected to information inputs of the control unit. y; evil washing, co-. Mandatory inputs. Which through a series-connected first key and a gate element are connected to the outputs of closing the repair valves of this block, the output of the first element I is connected to the first control output of this block through the second key, and the output of the second element I is connected to the second key and a time relay - with a single input of the memory element,

781388

the output of which is connected to the second control output of this block, the output of the third element I is connected to the first input of the third key and through the second gate element to the zero input of the terminal, the second input of the third key is connected to the output of the fourth element I, the output of the third key is connected with the output of closing the repair valves of this unit, the output of the Third gate element associated with the output of the fourth element I is connected to the output of the block of control of the Manage Node unit that is blocking the blocking output.

Figures 1 and 2 illustrate the principle: the diagrams of one section of the device: the control of a multi-section hydrotransport unit,

In each section of the integrated section of the installation on the Y-shaped pipeline 1, which is a vertical curved pipe filled with a separating liquid, sensors for monitoring the upper 2 and lower 3 levels of the separation liquid are installed, in each section on the U-shaped pipeline 1 installed three-way. crane 4f associated with pressure 5 and. drain lines with working fluid (water) pumped by pump 7 (common to all sections), the L-shaped plug of the three-way valve 4 is controlled by the control unit 8 of the three-way valve having outlets 9 and 10 and mechanical output 11, the Control unit 8 made, for example, of electromagnetic relays 12 and 13, the contacts of which control electromagnets by hydraulic distributors 1.4 connected to a hydraulic cylinder 15,

. - -, - - - - On the other branch of the U-shaped pipeline 1, check valves 16 and 17 are installed, through which it is connected to the inlet 18 and the outlet 19 slurry line. On the same branch of U-pipe pipe line 1, repair valves 20, 21 and 22 are installed with actuators 23, 24 and 25 controlling magnetic starters 26, -27 and 28, as well as, for example, hydraulic cylinders. mechanisms 29, 30 and 31 for closing and opening repair hatches. Right

- there is a flushing unit 32 and a control unit 33, a flushing unit with information inputs 34-45, inputs 46 and 47 with closing ports 48 and opening 49 repair valves with command outputs 50 and 51 to control the washing unit 32. and output that disables blocking output 52, Information inputs 34 -45 connectors, respectively (not shown in the drawing), with the sensor outputs of the repair valves 53-58 and sensors 59-64 to control the closing of the service hatches. The positions of the head are blocked and the suction of the three-way valve 4 is controlled by position sensors 65, 66 and 67, respectively, the outputs of which are connected to the zero inputs of the first 68, second 69 and third memory elements. The output of the first 68 and second 69 memory elements is via the first element OR 71 with the input 10 of the control unit 8, while the output of the second memory element 69 is connected to the input 46 of the block 33. The output of the third memory element 70 is connected to the input 9 of the control unit 8 The single input of the second memory element 69 is connected to the output of the second element OR 72. The sensor 3 output of the control of the lower level of the separating liquid of the section shower heads is connected via an open contact of the electromagnetic blocking relay 73 to the single input of the first memory element 68 with a single enter the fourth memory element 74, the zero input of which is connected to the sensor 3 monitoring the lower level of the separation fluid of this section and to the input of the third element OR 75, as well as through the opening contact of the blocking relay 73 and even through the opening contact of the subsequent section relay single inputs of the first and fourth relays of the subsequent section. The closing contacts of the relay 73 are closed together. The output of the fourth memory element 74 through the first time relay 76 is connected to the input of the element OR 75, the output of which is connected to the single input of the third memory element 70 and the single input of the fifth memory element 77 "Zero input .. (FIFTH memory element 11 is connected through the second time relay 78 with the single input of the sixth memory element 79 and the input of the OR module 72. The zero output of the sixth memory element 77 is connected to the disconnection by blocking by the output 52 of the control unit 33, and the output of the same memory element is connected to the coil cutting relay 73 and an input 47 of the control unit 33. The flushing unit 32 can be performed, for example, on two electromagnetic relays 80 and 81, which control the electromagnetic hydraulic distributors 82, control actuators for opening and closing hatches (hydraulic cylinders) and simultaneously the actuator 83 of the valves 84, which opens the water supply (1 of the water monitor 85. The position is monitored by sensors gj. And 87., control 33 of the washing unit 32 consists of three keys 88.89 and 90, time relay 91, memory element 92, three gate elements 93, 94, 95 and ale ntov And 96-99. The command inputs 46, 47 of the control unit Lenin 39 are connected through the first key 88 in series and the gate element 93 to the output of closing 48 repair valves of the same block. Information inputs 37, 38 and 39 are connected to the input of the first element AND 96, the output of which through the second key 89 is connected to the first control input 50 of this unit. Information inputs 40, 41, and 42 are connected to the inputs of the second element 97, the output of which is connected to the second key 89 and via time relay 91 to the single input of the memory element 92, and the output of the latter connected to the second control output of this unit. Information inputs 43, 44 and 45 are connected to the input of the third element 98, the output of which is connected to the first input of the third key 90 and through the second gate element 94 is connected to the zero input of memory 92. Information inputs 34, 35 and 36 are connected to the inputs of the fourth element And 99, the output of which is connected to the second input of the call 90 and through the third gating element 95 to unlock the output of the control unit 52, the output of the key 90 is connected to the exit of the 49 repair wipes, CxeNffii of all sections are similar. The kykdan section is connected to the previous and next, and the last to the first. Three or more sections can be operated in a displacing installation on one pulpovod to ensure uniform pulp feed into the pulpwater. The device provides rhythmic control of the section, each of which operates similarly to a cylindrical pump with a liquid piston. The device works in a discrete mode (all signals, in the same number and sensor sigals, are discrete, such as yes-no) as follows. P n: the elementary memory 68 is operating at the rays, i.e., the signal from the previous section (from the 3 x low control sensor) will stop at position i and send the command OR 71 to input 10 of the control unit with the 8 three-way valve, the plug is in the suction position, which is fixed by the position sensor 67. The left branch of the U-shaped pipeline 1 is connected to the drainage highway bis supplying the slurry pipe 18 through the check valve 16 to the right, the branch of the U-shaped slurry pipe 1 sucks the pulp. This continues until level. Thus, the U-shaped pipeline with a separating liquid and sensor 1 "W 3 control of the EYEZHV is allocated to the function of the delay element in the inverse line from the controlled object si, the signal of the 3 Control the lower element turns on the first element of the memory 68 of the subsequent section and Scheob Schno through the element OR 75 turns on the third aleMbyte of the memory 70 into the state, the OE cat of the control unit 8 drives the input of the 8th control unit 8 of the main crane, the last btai plug vyts head position, Thu position sensor 65 is fixed. The left branch of the U-shaped pipeline is equipped with a pressure line 5, as a result of which the right branch of the n-o6pia3Horo pipeline 1 through the non-return valve 17 rtyiibna is forced out into the outlet slurry line 19, the displacement stops at the achievement of the construction, and the ramping pipe is 19 and sensor 2 Upper level. The signal of this sensor through the element OR 72 is fed to the second e-memory center 69 and sets it to state 1, the output signal of the memory element 69 through the ele- ment. cop or 71 is fed to the input. 10 control unit 8 three-way valve. The stopper of the latter becomes. -... sch the position is blocked, which is fixed by the position sensor 66, the crirkatft from the sensors 65-67 of the position of the STAINBE1 memory elements 68-70 to state 6. The section, which completes the loop of the mouth, remains in standby mode up to 6: her signal from the previous section. To ensure the co-rhythm of operation of the C sensor; 3 controls of the lower levels of the previous one come to the fourth memory element. 74 and puts it. The signal from the exit to the state of the memory element 74 starts the first time relay 76. If the upper level 2 coutrol sensor 2 of this section does not work ahead of time I (i.e., the element 74 is activated in O), then the relay time 76 through the element OR 75 outputs the tertiary memory element 70, but puts the section in the extrusion mode. One of them calls Sygyay to the unit, the input of the memory element 77 and puts Sigyal with: exit it to the state and the memory element 77 starts the second time relay 78. If within. At the same time, sensor 2 of the upper level control does not work, (e, e, element pg No 1 77 will return To par O), te Sygyal from the output of time relay 78 will go through the element OR 72 to the second memory element 69, leading to the closure of the three-way valve to the closed position, the memory element 79 is simultaneously inserted, the relay 73 is turned on and, having relayed its contacts, disconnects the control circuit of the sections from the installation control cycle, t, e, the signal from the previous section immediately will go to the next, simultaneously receive signals to the input 47 of the control unit 39 by flushing the sections, and after completing the turn of the cork of the three-way valve 4 to the blocked state (i.e., by returning the memory element 69 to the state O), the signal at the input 46 of the control unit 39 of the closed section gives permission to issue short-term signal at the output of 48 overlap valves. This signal transmitted to the starters 26-28 leads to the closing of the valves 20, 21 and 22. This is recorded by sensors 56, 57 and 58, the signals from which, through information inputs 37, 38 and 39, go to the first element 96 and through the key 89 to output 50, the signal from the output 50 through the relay 81 of the washing unit 32 turns on the actuators 29, 30 and 31 open lyKbv and opens the valve 84 of the pumping hydraulic monitors 85,. The signals of sensors 59, 60 and 61, fixed opening of the hatches through information inputs 40, 41 and 42, go to the second element and 97, and from the output terminal to time relay 91. After the time has expired, a signal is sent to the memory element 5Г2, which puts it is in: the stop, the signal from the output of this memory element through the output 51 and the relay 80 of the washing unit 32 closes the lock 84, and with the help of mechanisms 29, 30 and 31 - hatches. The closure of the hatches is fixed by sensors 52, 63 and 64, Sigals of these sensors through the information inputs 43, 44 and 45 under the third element I 9B, and from its output to the key 90 and output 49 blrka1 control 32, This signal through the starters 26 ,, 27 and 28 opens the head & 20, 21 and 22, the short-term signal from the output of the third element 98 and 98 through the gate element 94 is fed to the zero input of the memory element 92 and sets it to its original, zero position. The opening of the valves 20, 21 and 22 is controlled by sensors 53 54 and 55, the signals of which are connected to the fourth element and 99 through information inputs 34, 35 and 36 of control 3i. The short-term response from the output of this element (via gate element 95) is applied to the interlocking lock the output 52 and further to the zero stroke of the sixth element 79, puts it at the HILE state. This leads

to disable the relay 73 and connect the section in the cycle of the installation.

Restoration of the unit section operation without stopping the operation of the device avoids production downtime.

Claims (1)

Invention Formula 1, A device for controlling a multiple-section hydrotransport installation containing the U-shaped pipeline installed on each sensor section of the upper and lower levels of the separation fluid, a three-way valve installed on each U-shaped pipeline and connected to the pressure and discharge lines, a three-way control unit a crane, three memory elements, zero inputs of which are connected to the outputs of the position sensors of a three-way crane, the outputs of the first and second memory elements through the First element LI is connected to one of the inputs of the control unit of a three-way valve, the other input of which is connected to the output of the third memory element, repair valves, the drives of which are connected to the magnetic actuators, the position sensors of the valves / actuators for opening and closing the repair hatches with the opening control sensors and the closures associated with the washing unit of the respective section, the inputs of which are connected to the first and second control outputs of the control unit of the washing unit. Outputs Open the repair repair zaky | Zhek unit control flushing unit. They are connected with the corresponding magnetic starters, and informational. entrances - with outputs of sensors for positioning repair valves and sensors for monitoring and closing repair hatches, characterized in that, in order to improve the accuracy and improve the performance of the device, two time relays are installed in each section, the second and third elements OR, the fourth, the fifth and Hexes memory elements and a blocking relay; Single inputs of the first and fourth memory elements are interlocked; the blocking contact of the blocking relay of this section and the closing contact of the blocking relay of the previous section are connected to the output of the sensor of the lower level of separation fluid of the previous section, and the zero input of the fourth memory is connected to the output of the sensor of the lower level of separation fluid data of the section; Eree second element OR - with single inputs of the third and fifth elements the memory and through the second signaling contact of the blocking relay of the subsequent section — with the single inputs of the first and fourth memory elements of the subsequent section; the second input of the second OR element is connected to the output of the first 5th time relay associated with the output of the fourth memory element; the zero input of the fifth memory element is associated with the output of the sensor of the upper level of the separation fluid of this 0 sections connected through the third element OR to the single input of the second memory element; The second input of the third element OR is connected via the second time relay to the output of the fifth memory element and the single input of the sixth memory element, the output of which is connected to the control winding of the tripping relay of this section, the closure contacts of which are connected between each other, the outputs of the second and sixth memory elements are connected to the command inputs of the control unit of the npoNBbiBKHj node whose shutdown output is connected to the zero input of the sixth memory element, 52, The device according to claim 1, stating that the control unit of the node consists of three keys, timestamp, memory element, three gate elements and four elements AND, inputs connected to the information inputs of the control unit of the washing unit, the command inputs of which through the first key and the strobe element connected in series are connected to the openings of the repair valves of this block, the output of the first, And element is connected via the second key to the first control output of this block, and the second Element And it is connected to the second key and through a time relay to the single input of the memory element, the output of which is connected to the second control output of this unit, the output of the third element: that And is connected to the first input of the third 5th key and through the second gateway ; 5 lambart - to the zero input of the memory element, the second input of the third key is connected to the output of the fourth element; that AND, the output of the third key is connected 0% 1 inlet to close the repair valves of the Dayrrr block, the output of the third gate of the element connected with the outlet; the fourth element, And, is connected to the blocking output of the control unit of the washing unit. Sources of information taken into account in the examination 1, Patent of France 2023735, l Class, G-04 B 1/00, 1970, 2, Japan Patent 47-32345, cl. 83/5 / Y 221,3,1967 (prototype). Dividing fluid v .cVLi ten j5rn chtp  75 74 fia after zukktsuyu section With the previous FIG. one A i Q Hci S 75 78 Ha 47 04 -SLF ABOUT .f "W, l L.