SU370523A1 - ALL-UNION ^ fT I'rrtrT -. ^,. , *,., T ^^ "- ~ - '"' ^^ - ^ KAYAAvtory & [b?! 1 ivIVAA and A.A. Narcov in the refining and petrochemistry - Google Patents

Description

I

This invention relates to an automatic chromathographic analyzer of quality and may find a variety of iB chemical, petrochemical and other industries.

It is intended to form, at predetermined, predetermined times, the times of required duration for controlling the operation of the chromatograph.

A well-known coma of a chromatographic device containing a primitive mechanism, a command assignment unit made in the form of a disk having on the side of the side there are slotted tracks for installing command assignment pins, a command unit formed of two photoelectric piezoelectric transducers, a stepper distributor and a block of regulatory bodies, has a lack of accuracy in the implementation of the Time Program and (Not reliably reliable in operation.

In the proposed device, an increase in the accuracy of operation is achieved by the fact that two perforated groups of pins are installed in concentric disk tracks, one of which serves to set the time points for the commands, and the other to set the points c) turn off the health commands, and each of the specified pin type through separate nodes, the formation of command pulses is connected to the corresponding contactless distributor.

FIG. 1 is a schematic diagram of the proposed device; FIG. 2- cyclogram of his work.

The device contains, i, the drive mechanism I, the unit II of the task of the comaldes, the unit III of the formation of co, man1D pulses, the distributors IV and V; block VI of the executive bodies.

The drive mechanism I consists of: an electric motor /, a gearbox 2 equipped with a unit for stepwise changing the cycle time, and a driving pulley 3 mounted on the output shaft of the gearbox 2. And having the ability to move along the axis of the shaft. Using the gear 2 roughly set the cycle of operation of the chromatograph.

The node And sets the commands in the form of a disk 4, the lower side surface of which contacts the pulley 3. When the position of the pulley 3 changes on the axis of the output shaft of the gearbox 2, the gear ratio of the pair of pulley 3 changes to disk 4, which is a friction variator designed to smoothly change the cycle time. With the help of the variator, the uHKvi devices are precisely tuned. On the upper lateral surface of the disk there are two tracks 5 and 6, made in a lot of concentric

Circles: on track 5, pins 7 are placed for setting switching points, and on track 6, pins 8 for setting command off points. Pins 7 and S can be mouth “turned into one; fight to the point of their path. Using these pins, set the duration of the commands and their sequence within the cycle of operation of the chromatograph. The node III form | WORLDWIDE, mand consists of two photoelectric converters 9 and 10, which are installed in such a way that when the disk 4 rotates, pins 7 and S intersect the light fluxes of the corresponding converters 9 n 10 n while forming; ts: coma “Bottom pulses. Photoelectric preamplifiers 9 and 10 are connected respectively to T1ven, but to the inputs of distributors IV and V. These distributors consist of binary counters 11 and 12 assembled on contactless triggers with counting inputs. The outputs of the counter 11 are connected to the inputs of the decoder 13, and the outputs of the counter 12 to the inputs of the decoder 14. The outputs of the decoders are connected to the inputs of the block VI and additional organs. Block VI of the insulators consists of assembly diagrams 15 and executive relays 16. The outputs of the decoder 13 directly or through circuits 15 are connected to the connecting line of the switching relay 16, and the outputs of the decoder 14 directly or through the collecting circuit 15 to switching lines of the operating relay 16. Through the circuits 15, those and relay relays 16 are connected, which, during the cycle of operation of the chromatograph, must be switched on several times, and each assembly 15 must have so many inputs connected to the corresponding the outputs of the decoder 13 or 14, how many times during the cycle you need to turn off and turn off the executive relay 16 connected to the data outputs of the sham collect. The device works in a sweet way. In advance, in accordance with the total cycle time of the chromatograph, adjust the speed of rotation of the software disk 4 so that the full cycle of the disk corresponds to one cycle of the chromatograph. The speed of the disk 4 is patched by switching on the corresponding speed of the gearbox 2 (“roughly”) and shifting the drive pulley 3 (“exactly). Further, in accordance with the time program of the chromatograph on track 5, the studs 7 are installed for switching on, and the track 6 - the pins 8 for shutting down commands. The distance between the pins installed on the same track is proportional to the time between on or off commands, and the distance between the pins arranged on adjacent tracks and connected to one executive relay 16 is proportional to the duration of the command. In the initial state, the program disk 4 is set to zero zero, and there are no signals at the outputs of the decoders 13 and 14. When the device is turned on, the disk will rotate, and the pins 7 and 5 one after another at specified intervals of time will cross the light fluxes of the converters 9 and 10. The generated pulses go to binary counters, 11 to 12, and from their outputs to the decoders 13 and 14 At the outputs of these decoders, signals controlling the executive relays 16 will be sequentially generated. At time L, the first pin 7 mounted on track 5 will cross the light flux of the photoelectric converter 9 and the pulse generated at its output. foot on the distributor IV. At the first output of the distributor, according to the VITS signal, which will turn on the first executive relay 16. At time 2, the second pin 7 will cross the light flux of the converter 9, the second output will go to the distributor IV, resulting in a signal to the distributor IV output and turn on its second exit. The first pickup circuit 15 will receive a crawl signal to the second execution relay 16. In the time slot t, the first pin 8, installed on track 6, crosses the light converter 10 n similarly on the first output of the distributor V The second circuit. 15 of the collection will turn off the second “snatch relay 16. At time 4, on the third output of the distributor IV, a signal is turned on that will simultaneously turn on two executive relays 16 connected to this output of the distributor. At time 4, the first executive relay 16 is turned off, etc. Depending on the position of the 7 and 8 pins on the nporpaMiMHOM disk and the order of connecting the executive relays 16 to the outputs of the IV and V 1 distributors, control commands are generated at the device output. After the disk makes a full turn, the device is ready for the next cycle. The subject of the invention is Co: Ma, a single device of a chromatograph containing, with a water mechanism, a KO | Mand command unit, made in the form of a disk, having concentric tracks on the side for mounting pins, a command pulse generation unit, and distributors. a block of actuators, characterized in that, in order to improve the accuracy of the device, two separate groups of pins are installed in concentric disk tracks, one of which is used to set the command activation times, and

the other is to set the time points for switching off the commands, and each of the specified pin groups is connected to the corresponding boocant distributor via separate command pulse generation nodes.

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