SU796803A1 - Pressure regulator with temperature correction - Google Patents

Description

(54) DEVICE FOR REGULATING THE CORRELATION OF COMPONENTS OF SYNTHETIC RUBBER

one

The invention relates to devices for automatically controlling the ratio of components of synthetic rubber, for example, oil and latex, and can be used in the manufacture of oil-filled synthetic rubbers, for example, dynylfenylmethyl styrene rubber.

It is known a device for automatic control of the ratio of expenditures, comprising a component cost sensor, connected through a cost controller to a ratio controller, the latter being connected to a controller of one of the components with a switching relay.

A disadvantage of the known device is that it does not sufficiently maintain the predetermined ratio of components due to the lack of consideration of the concentrations of the components.

There is also known a method for automatically controlling the ratio of latex (polymerizate) and oil consumption, implemented using the device closest to the invention with the technical solution containing oil, latex and rubber concentration sensors in latex, connected respectively

the first and second inputs of the unit for calculating the predetermined oil flow, the output of which is connected to the chamber; setting the oil flow controller; 2

A disadvantage of this device is that the dosing accuracy is not high enough due to the nonlinearity in the characteristics of the elements making up the device.

The purpose of the invention is to improve the accuracy of the device.

The goal is achieved by the fact that the known device, containing sensors for the consumption of oil, latex and rubber concentration in latex, an oil consumption calculation unit, an oil consumption controller, the first input of which is connected to the unit

Claims (2)

5 calculating the oil consumption / output with an actuator installed on the oil supply line, is additionally equipped with linearization blocks, latex temperature sensor 0, rubber oil concentration unit, temperature correction calculator and perparameter and input through the rubber concentration correction unit connected to the output of the latex temperature sensor, the second input is connected to the output of the rubber concentration sensor in lat, and the output of the adder is connected to the first input of the calculator The second oil input is connected with the output of the oil concentration controller in rubber, and the third input is connected via the first linearization unit to the output of the latex flow sensor, the second input of the oil consumption regulator is connected via the second linearization unit to the output of the oil consumption sensor. On 4) the same function is shown on the device circuit. The device contains a sensor 1 latex flow rate sensor 2 oil consumption sensor 3 concentration of rubber in latex, sensor 4 latex temperature. blocks 5 and 6 of linearization of latex and oil consumption signals, respectively, adder 7, unit 8 for calculating oil consumption, regulator 9 for oil flow, actuator 10, unit 11 for calculating temperature corrected, sensor 12 for concentration of oil in rubber. The oil dosage device operates as follows. The linearization blocks 5 and 6 form signals that are proportional to the actual costs of latex and oil, respectively; where P is the output signals from blocks 5 and 6 of the RP correspondence are output signals from flow sensors 1 and 2, respectively. Block 11 generates a temperature correction signal that compensates for the determination of the rubber concentration measurement by changing the telesheath. pa.a ..- c, K (- OUTPUT signal from block P - output signal from block 4 a, b, c - constant coefficients. Block 7 is designed to determine the actual rubber concentration in latex, which is carried out by summing the measured concentration value rubber in latex sensor 3 and temperature correction from block 11: RC where P is the OUTPUT signal from block T, РЗ is the output signal from block 3. Block 8 generates a signal for setting the oil flow controller in accordance with the expression: p p -, - Pia where Pg is the output signal of block 8, С1: setpoint adjuster 12 of a given concentration and oil in rubber. The flow controller 9 generates a signal to the actuator 10. The controller is a typical P-controller with settings that ensure stable operation. In case of deviation from the nominal value of latex consumption or rubber concentration in latex, or latex temperature, or at the same time, the latex consumption, rubber concentration and latex temperature, the device changes the oil consumption, thereby stabilizing the oil content in rubber at a predetermined level. Claims An arrangement for adjusting the ratio of components of synthetic rubber, comprising oil, latex and rubber concentrations in latex sensors, an oil consumption calculator, the output of which is connected to the first input of the oil consumption regulator, which is connected to an output level installed on the supply line oils, characterized in that, in order to increase the accuracy of the device, it contains the first and second linearization units, the unit of oil concentration in rubber, as well as the follower but connected latex temperature sensor, temperature correction calculation unit and adder, the second input of which is connected to the output of a rubber concentration sensor in latex, and the output - to the first input of an oil consumption calculator, the second input of which is connected to the output of the oil concentration controller in rubber, and the third the input is to the first linearization unit, the input of which is connected to the output of the latex flow sensor, the second input of the oil flow regulator is connected to the output of the second linearization unit, the input of which is connected to the output of the sensor oil consumption. Sources of information taken into account during the examination 1. USSR author's certificate No. 297381, cl. q 05 D 11/00, 1973. 2. USSR author's certificate number 503218, cl. Q 05 O 11/04, 1977 (prototype).