Device for the automated preparation grinding parties
(57) Abstract:The device contains a number of dosed components of n identical channels dosing. Each channel contains dosing consistently United smoothing filter with a variable smoothing factor and weighing sensor and actuator flow control. The entrance of the actuator is connected to the first output of the corresponding channel common to all the channels multichannel regulatory controller. Cathode channel includes a unit current flow component and unit total quantity of component in the mixture connected with their outputs to the corresponding inputs multichannel regulatory controller. The device also includes in each channel smoothing filter with a variable smoothing factor, which is connected to its signal input with the output of the weighing sensor current consumption, its output with the input of the corresponding channel multichannel regulatory controller, and its managing input with the second output of the corresponding channel multichannel regulatory controller. Increases the accuracy of the device at high ranges perekriti is worn to the milling industry and can be used for automated preparation of grinding grain batches.A device batching grinding grain batches in the milling industry (butkovsky C. A., Marco A. I., Melnikov, E. M., Technology thermoablative industries, M: integraf service, 1999, S. 242) containing the weighing sensor flow of grain moved along the lever sensor counterweight to set the value of consumption and the associated pneumoperitoneum acting on the valve regulating the flow of grain to the inlet of the device, which ensures a consistent flow of grain to the specified value.The disadvantage of this device is the low accuracy of the given cost ratio is due to the fact that blocking the work of the group of dispensers in violation of the specified operation mode of one of them manually.Closest to the present invention is a device for adjusting the ratio of components of the mixture by author. St. USSR 1124264 from 07.12.82, IPC G 05 D 11/13 containing the dosed quantity of components n channels dosing, each of which contains serially connected unit of consumption and a dispenser connected to the first output through the element match to the Executive of the relay, contains cadumitrescu" and normally open contact of the actuating relay, connected to a second output to the second input of the dispenser your channel, and inputs of each adder are connected respectively with the second outputs of the dispensers and the outputs of inverters other channels of dosing, and the inputs of the inverters are connected to the outputs of the respective flow control devices. This device provides automatic coordination of all channels dosing, and ensures the accuracy of the cost ratio in transient conditions due to the introduced elements of type "dead zone" in the channels stabilize the ratio of components. However, in milling each of the identical dosing device may be configured to substantially different magnitudes of costs depending on specified percentages. The range specified costs can be up to 10 times higher. The accuracy of the dosage of each component will be the lower, the smaller the value of the assigned flow component.The drawback of this device in such applications, the characteristic of the formation process of the grinding parties in the milling industry, is the low accuracy of the result Prochaska characteristics of the device, increases its static error.The problem to which this invention is directed is the provision of the required grade flour by increasing the accuracy of maintaining a certain percentage of grain components generated in grinding parties.The technical result is to increase the accuracy of the device at high ranges overlap of expenditure components in each of its constituent channels dosing.The technical result is achieved in that the device for automated preparation grinding parties contains a number of dosed components n channels dosing, each of which has connected in series smoothing filter with a variable smoothing factor and weighing sensor, actuator flow control, an input connected to the first output of the corresponding channel common to all the channels multichannel regulatory controller, the output of the smoothing filter connected to the first input of the corresponding channel multichannel regulatory controller, and the control input of the smoothing filter is connected with the second output Southsea flow component and unit total quantity, the outputs are connected to second and third inputs of the corresponding channel multichannel regulatory controller.The drawing shows a block diagram of the proposed device.The device contains a number of components n of channels dosing, each of which has connected in series smoothing filter 1 and weighing the flow sensor 2, the actuator flow control 3, an input connected to the first output of the corresponding channel common to all the channels multichannel regulatory controller 4, the output of the smoothing filter 1 is connected to the signal input of the corresponding channel multichannel regulatory controller 4, and the control input of the smoothing filter 1 is connected with the second output of the corresponding channel multichannel regulatory controller 4, wherein each channel includes a unit current consumption 5 and unit total expenditure 6, the outputs are connected to second and third inputs of the corresponding channel multichannel regulatory controller 4.The device operates as follows. Unit 5 channel dispensing component with the maximum percentage of Referencing-5 consumption of other components are installed in position, corresponding to the required percentage in the mixture relative to the preset flow rate of the component with the maximum percentage. Referencing-units 6 total expenditure components are installed in the position computed based on the desired amount of cooking of the mixture and the percentage content of each component. The device turns on. The signals from the sensors 2 expenditure components passing through the smoothing filters 1 arrive at the signal inputs of the controller 4. The controller 4 to the mismatch between the signals coming from the setting device 5 and the smoothing filters 1, controls the Executive bodies 3 in such a way as to reduce to zero the value of the error for each channel. Due to the fact that the relative error of measurement of the current flow is inversely proportional to the difference between its value and the upper limit of the measurement weight sensor, the accuracy of the measurement of the cost of components will be different. The closer a stabilized flow rate value to the beginning of the scale weighing sensor 2, the smaller is the relative measurement accuracy of its current value. To reduce the impact of the deterioration of the measurement accuracy on the accuracy of the overall the filters 1 depending on the set by the setting device 5 costs of components for each of the channels dosing. The value of the smoothing coefficient is set higher, the closer is set to the current values of consumption of this component to the beginning of the scale corresponding weighing sensor. This is done by issuing the controller 4 with its corresponding output to the control input of filter 1 signal that changes the coefficient of the smoothing filter based on the value set by the setting device 5 the value of the current consumption on the law of inverse proportion. As a result, the accuracy of the measurement and stabilization of the average of the smoothed values of the flow component, and hence its total amount in the mixture increases. Thus, the introduction of the device, a smoothing filter with variable inversely proportional to the value of the expenditure components by smoothing coefficients allows to increase the accuracy of the device for the preparation of grinding parties. Device for the automated preparation grinding parties, containing the amount of the dosed components of n identical channels dosing, each of which contains a weighing sensor and actuator flow rate, the inlet of which is connected with the corresponding PE the chick of the current flow component and unit total quantity of component in the mixture, United by their outputs to the corresponding inputs multichannel regulatory controller, characterized in that the device further comprises for each channel smoothing filter with a variable smoothing factor, which is connected to its signal input with the output of the weighing sensor current consumption, its output with the input of the corresponding channel multichannel regulatory controller, and its managing input with the second output of the corresponding channel multichannel regulatory controller.
FIELD: means of automation of production processes, applicable for metering of floatation reagents at concentrating mills at concentration of non-ferrous metal ores.
SUBSTANCE: the device has N channels of metering, each provided with an electromagnetic weigher and an amplifier, discrete signal input/output unit connected to a microprocessor device having a program providing formation of control signals shifted in time, connected to the respective inputs of each weigher channel. The device has two series-connected power sources, a current transmitter is connected at the output of one of them, it is connected to each metering channel, and the common potential of the power sources is connected to each metering channel. Each metering channel has a square signal shaper, two keys, maximum signal detector on semiconductor diodes, as well as a forcing signal transmitter and a reagent flow sensor. Since the forcing signal actuates in succession the weighers of the electromagnets in the metering channels, the presence of the forcing current in the current transmitter makes it possible to monitor the serviceability of the line of communication with the weigher by means of the input\output unit, and the forcing voltage transmitter in each channel makes it possible to selectively connect the outputs of the reagent flow sensors to the input\output unit and thus to monitor the weigher serviceability, and the program of the microprocessor device produces a base of data of functional failures of the metering channels, and takes stock of reagents of each channel with the use of the information of the data bases of failures of the metering channels.
EFFECT: enhanced accuracy of metering.
FIELD: instrument making.
SUBSTANCE: main and auxiliary materials are added at speeds of transition process flows or stabilised condition depending on value of control signal. Actual speeds of flows monitor command speeds of flow. Device provides for dynamic control over instant and integral error for specified range of control.
EFFECT: expansion of functional capabilities.
16 cl, 10 dwg
SUBSTANCE: method comprises the following steps: (a) feeding a stream containing carbon and an oxygen-containing stream into a reactor in given ratio O/C, (b) at least partial oxidation of the stream containing carbon in a gasification reactor to form a gaseous stream of a product containing at least synthetic gas, CO2 and CH4, (c) determining content of CO2 in the stream of product obtained at step (b), (d) comparing content of CO2 determined at step (c) with predetermined content of CO2 as a result of which the value of the difference between content determined at step (c) and the predetermined content can be obtained, (e) controlling the ratio O/C at step (a) based on the difference value obtained at step (d), where 'O' denotes mass flow of molecular oxygen O2, which is present in the oxygen-containing stream, and 'C' denotes mass flow of material containing carbon, except any optional carrier gas or water.
EFFECT: high accuracy of controlling quality of the product.
9 cl, 1 dwg, 1 tbl
SUBSTANCE: method uses a biased mass flow imbalance value obtained by comparing the sum of incoming mass flow measurement values with the sum of outgoing mass flow measurement values and adding a bias component to obtain the biased mass flow imbalance value. The flow of at least one of the incoming and outgoing streams (12, 14, 16, 18) is adjusted to move the biased mass flow imbalance value towards zero. In addition, pressure measurement (PC) is carried out in the connection and the obtained data are used to adjust the bias component in response to a change in the pressure measurement (PC) relative to a pressure set point (PSP), to reduce the change in said pressure measurement (PC) relative to the pressure set point (PSP).
EFFECT: high accuracy of control.
16 cl, 3 dwg
FIELD: machine building.
SUBSTANCE: device comprises two transferred components (k1, k2) with two accumulation vessels (1a, 1b) for every component (k1, k2), two flow control circuits (2a, 2b) for accumulation vessels (1a, 1b); one first pipeline (9a) wherein fed are fluid components (P); second pipeline (9b) for feed of carbon dioxide gas, and mixer (1c) for drinks to be dispensed. Note here that first pipeline (9a) feeds fluid (P) mixed with carbon dioxide into mixer (1c). Note also that accumulation vessels (1a, 1b) and mixer (1c) are composed of pressure vessel and intercommunicated by, at least, one pipeline (1) to equalise pressure between accumulation vessels (1a, 1b) and mixer (1c).
EFFECT: stable control of proportioning and dispensing.
18 cl, 1 dwg
FIELD: process engineering.
SUBSTANCE: set of inventions relates to control over batching and mixing system. System comprises first pump to feed first component to mixer and second pump to feed second component to mixer. Piston stroke of every pump can be reversed from direction of suction and displacement to component displacement direction and visa versa. Motion detector connected with controller is connected with every pump. Said controller is programmed to initiation of pump stroke direction reversing after determination of that component volume that stays in the pump insufficient for setting of preset metered ratio. Said controller is programmed to continuous feed of first component to the mixer and intermittent feed of second component to the mixer to conduct cycles of batched feed of second component to the mixer.
EFFECT: improved batching and mixing performances, higher homogeneity of the mix.
9 cl, 4 dwg
SUBSTANCE: gas odorising system comprises a main 1 and a control 2 container with an odorant, a feeding device 3, a control unit 8 connected to a power supply 10, said control unit being connected to a flow meter 6 of a main gas pipeline 13. According to the solution, the feeding device is a working chamber 14 in which there are at least three high-voltage electrodes 15, 16, 19 with controlled spacing, one of which 19 is earthed and the others are connected to the control unit, an inlet valve 11 connected to the main container, an outlet valve 12 connected to the main gas pipeline. The odorising system also includes, connected to the control unit, a pressure sensor 4 inside the working chamber and a pressure sensor in the main gas pipeline before the flow meter in the gas flow direction.
EFFECT: faster dosage adjustment and therefore accuracy of maintaining concentration of odorant in natural gas while reducing odorant consumption and improving safety.
5 cl, 3 dwg