SU710990A1 - Control device for charging raw materials into glass molding oven - Google Patents

Description

materials into a glass furnace containing a photodetector with a diaphragm, an illuminator, a beam of light at an angle to the surface of the glass mass, a loader kinematically associated with a performance engine, a trigger, an element of coincidence, a counter, a register of the memory, a quantization element and a level setter, the photoreceiver connected to one trigger input, the output of which is connected to one input of the matching element, the other input of which is connected to the quantization element, the output of the matching element is connected through a counter to the input of the register memory page, equipped with a scaling converter, regulator, setting device and an additional diaphragm photodetector, one of the scaling converter's outputs connected to the controller, another input connected to the memory register output, the output of the scaling converter connected to one controller input, the other input of which is connected with a level adjuster, the controller output is connected to a performance engine, and the other trigger input is connected to an additional photodetector.

The essence of the invention is explained by the scheme of the device for controlling the loading of raw materials into the glass melting furnace.

The device contains illuminator 1, photodetectors 2 and 3 with diaphragms 4 and 5, quantization element 6, unit 7, scaling converter 8, memory register 9, regulator Yu, level adjuster 11, glass melt surface 12, loader 13 with executive engine 1–4 , light source 15, engine 16 ,. the obturator 17 with the Archimedes spiral profile, the lens 18, the trigger 19, the coincidence element 20 and the counter 21.

The device works as follows. The luminous flux from the illuminator 1 using the light source 15 and the lens 18 is directed onto the surface of the glass melt 12. The shutter 17 rotated by the engine 16 evenly overlaps the image of the light source 15, forming a light-shadow border in the focal plane of the object 18. The light flux, reflected from the surface of the glass melt 12, forms in the plane of installation of the photodetectors 2 and 3 a uniformly moving image of the light-shadow border. At the same time, the diaphragms 4 and 5, by limiting the aperture of the photoreceivers 2 and 3, make it possible to accurately capture the moments of intersection of the photodetectors by the image of the cve-shade boundary. The signals of photodetectors 2 and 3, arising from the successive intersection of I.X by the light-shadow boundary, arrive at the inputs of the time interval measurement circuit 6. The signal of the photodetector crossed by the boundary first, for example, the photodetector 2 flips the trigger

19 in a single state in which a control pulse is generated at its output to one of the inputs of the coincidence element 20,

The signal of the photodetector 3 transfers the trigger 19 to the zero state. Thus, the duration of the control pulse at the input of the coincidence element

20 is equal to the monitored time interval between the signals of the photoreceivers 2 and 3, and the quantization scheme 7 transmits to the second input of the coincidence element 2O the quantum 1S 9 stabilized frequency pulses. Counter 21 performs a count of the number of pulses placed in the time interval between the signals of the photodetectors. The received digit code. With the output of the counter 21 enters the register 9, in the memory of which it is stored until the results of the next measurement are obtained.

A signal proportional to the time interval measured at € 1 at the output of register 9 is fed to one of the inputs of the scaling converter 8, to the second output of which from the setter 7 a signal is received that is proportional to the base distance between the photoreceivers 2 and 3. The converter 8 carries out the output signal of the circuit 6 1 measure time interval on. Base Setpoint 7 Signal The output of the mass-stabilizing converter 8 is directly proportional to the time interval between the signals of photodetectors 2 and 3 and inversely proportional to the distance between them.

Claims (2)

The signal proportional to the level of glass melt in the furnace from the input of the scaling converter 8 is fed to one of the inputs of the 1O controller, where it is compared with the signal of the level indicator 11. When the glass mass level in the new number corresponds to the specified value, the signals of the converter 8 and the setting device 11 are equal and the difference i.x is zero. If there is no imbalance at the input of the regulator Yu, its control signal does not change and the rotational speed of the executive motor 14 of the loader 13 remains constant. Accordingly, the consumption in the furnace of raw materials (mines and broken glass) does not change. When the level deviates from a predetermined value, for example, when it is lowered to the Nl level, the time interval between the signals of photodetectors 2 and 3 decreases. Accordingly, the output of converter 8 also decreases and becomes less than a predetermined amount proportional to the level deviation from the predetermined value. The controller 10 makes the difference between the measured and the set level values and, depending on the magnitude of the imbalance, changes the rotational speed of the engine 14, which with the help of the loader 13 changes the consumption of raw materials into the furnace until the imbalance is eliminated. When the reflecting surface is skewed, the reflected rays are displaced by a certain angle. Accordingly, the moments of intersection of photodetectors, the image of the light-shade boundary also shift in time by a certain amount. In this case, the interval between the signals of the photodetectors remains unchanged, since both signals are shifted in time by the same amount. The invariance of the monitored time interval from the skew of the reflecting surface of the glass mass mirror makes it possible to ensure high accuracy of measurement and stabilization of the level in the furnace. Apparatus of the Invention A device for controlling the loading of syphic materials into a glass melting furnace containing a photo irradiator with a diaphragm, an illuminator, a beam of light at an angle to the surface of the glass melt, a loader connected with an actuator, a trigger, an element of coincidence, a counter, a memory register, an element a quantizer and a level adjuster, the photodetector being connected to one trigger input, the output of which is connected to one input of a matching element, the other input of which is connected to an element of quanta Moreover, the output of the coincidence element is connected via a counter with a memory register input, characterized in that, in order to improve the accuracy of the furnace level stabilization, it is equipped with a scaling converter, regulator, setting device and an additional diaphragm photodetector, with one input of the scaling converter connected to control device, the other input is connected to the output of the memory register, the output of the scaling converter is connected to one controller input, the other input of which is connected to the level controller, the output of the controller The ra is connected to the actuator and the other trigger input is connected to an additional photodetector. Sources of information taken into account in the examination 1.Patent of Germany № 1.2О7.1ОЗ, cl. 42e 24, i960. 2. USSR author's certificate number 529995, cl. C OZ B 45/2. 1975 (prototype).