SU1348790A1 - Device for regulating flow consumption ratios - Google Patents

Abstract

The invention relates to flow ratio controllers and can be used to control the ratio of the flow rates of evaporating substances in multicomponent mixtures in technological processes in various industries. The purpose of the invention is a twist point (3 a 9 i (L

Description

P ogulirg) wai ;: t O -i iosheit1 flow rates of a multicomponent mixture by reducing the effect of the temperature difference between the fluxes, the medium, and ent, 1F; oror with: eteny. , For this, the device,; a re elimination ratio of flow rates, contains a mixer consisting of input 2 and output 2b of cases separated by a different 3 and: electr. 1 of a heat-resistant material on which pc1 is displaced by TCP-transform. 4-6. Cases 2a, 26 are divided into channels with the help of fissile 7, ka: -71a pair of channels have communication) (; tenka-plasti7 y 3 with corresponding.s-ts:: bunch, 1 / 1I - then; ; ms1transfer.1. yuvatel. The number of pairs of the channel (. in and thermal conversions) should correspond to the number of co-; piento mixtures. plates ;, 7 stands of t. 2 b on distribution (I-2) d,

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Isoor; e; -; e attitude Л1Г-: to -regulators coo j Hi | ; flow flow rate and the same r. ri b - Mülsonano to regulate with; 1 but 1in flow rates of ipx1x F ei: j, ev: i FJ g mpog o komponent mixtures n I t XHOJ Ci 1 And {ya processors pa3jnf4Hb x) r1 effects G rum: frequency

Target and acquisition 11 - Increase point fsoc. D u.11i ;;; ovpni sootnOn e.1IY expenses P1; OK (in a multicomponent component of s, mesi.

On the blackboard there is an analogous circuit of 1 smy device (on the example of the implementation of the device for three k for the first time).

Arrangements for regulation,: 1-1-1 I corresponding I, the flow rate contains mixes; 1, consisting of an input 2a and an output 26 corguses separated by a plate 3 of electrically insulating heat-resistant material on which thermal converters are placed 4-6. Cases 2a, 26 are divided into channels with the help of p; 1 separator plates 7, with the vapor pair 1; the canals have a common wall plate 3 with the corresponding thermocoupler (: g; rlz: vatel. equivalent hydraulic diameter so that an inlet chamber 8 is formed in the inlet housing 2a from the inlet 9 side and outlet chamber 10 from the outlet 11 side. On the other hand, the corresponding channels of the housings 2a, 2b are connected by means of pipelines 12 will perform Mechanisms 13–15 and bubblers 16–18 of the necessary evaporating substances. The device also contains a power source 19, flow regulators 20–22, and a voltage divider 23. Each, the first flow regulator consists of a paddle 24, a meter 25, setting points 26 and comparator 27. The invention improves the accuracy of the control panel of the ratio of the flows of the evaporated weight: 1 in a multicomponent mixture and multiplies the output of the finished product., 1 sludge.

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In this case, must match the number of components of the mixture. The plates 7 are spaced from the wall of the housing 2a i2b on the Russ. o (l-2) d, (where d is equivalent to tape; hydraulic diameter) so that inlet housing 2a forms an inlet chamber 8 on the inlet side 9 and outlet chamber 10 on the outlet side 11. With a different on the sides, the corresponding channels of the housings 2a, 26 are connected with the help of pipelines 12, on which the corresponding actuators are installed: mechanisms 13–15 and the corresponding bubblers 16–18 with the necessary evaporated substances. The device also contains a power source 19, flow controllers 20-22 and a voltage divider 23, each flow control consists of an amplifier 24, a meter 25, a setting device 26 and a comparator 27. The device operates as follows.

Power supply 19 is turned on. Thermal converters 4-6 are heated. In the inlet 9, a PS carrier is fed, from chamber 8 it is distributed to the channels, it passes from one ..

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6

side thermal converters 4 -b and causes greater cooling of the first part (along the flow) thermal converters,; -af; as the second part of the gas is suitable for:. e heated. Next, the flow of carrier gas through pipelines 12 and control valves 13-15 enters the bubblers 16-18, where it captures evaporated substances and enters adjacent channels, passes from the other side of thermal converters 4-6 and causes their cooling. Flows in adjacent channels pass counter

Therefore, thermocouples are cooled by 15 cuts, the first thermoconverter.

on the magnitude of the temperature, determined by the difference in the flow rate of gas-ns. the body and carrier gas with an evaporating substance, i.e. vapor flow rate (mass flow rate, since the difference is determined by the mass transfer of gas). The temperature difference between thermal converters causes a proportional change in their resistance. The electric MOS1, as measured, for example, by both parts of the thermal converter 5 and divider 23, emits an electrical signal proportional to the difference in the resistance of the thermal converter parts 5, i.e. mass consumption of the vaporized substance of the main component of the mixture. This signal is amplified by the amplifier 24, measured by the meter 25 and fed to one of the inputs of the comparator 27, to another input of which an electrical signal is sent from the unit 26 to the flow rate of the main component of the mixture. The output of comparator 27 controls the operation of the control valve 14 so that the signal from amplifier 24 is equal to the reference signal from setpoint 26 by changing the flow rate of the carrier gas passing through the valve, i.e., the flow rate of the main component of the mixture is equal to the set value. Thermocouples 4 and 6 separate the signals proportional to the flow rates of the vaporized substance of other components, which are compared with the difference signal of the main component thermocouple, are measured and maintained using regulators 20 and 22 similarly to maintaining the flow rate of the main component. From the common chamber 10, through the nozzle 11, the mixture with a given ratio of the costs of the evaporated substance in the carrier gas enters the process unit.

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The invention makes it possible to improve the accuracy of controlling the ratio of the VALUES of the evaporated substance in a multicomponent mixture by eliminating the influence of the temperature difference between the streams, the medium and the enthalpy factors of mixing.

Claims (1)

Invention Formula Device for regulating the ratio of flow rates, containing a mixer with inlet and outlet 25 Installed on a plate from an electrically insulating thermos of the Yuki material. The extreme terminals of which are connected to the corresponding terminals of the power supply and voltage divider, the middle terminal of which is connected to the first input of the first flow regulator connected to the corresponding flux invader of the flow, the second input the first the regulator is connected to the middle terminal of the thermoconverter, and the output is connected to the main input of the first 11s 11x1 of the decisive mechanism installed on the first pipeline 30 smegitel, characterized by Then, in order to improve the accuracy of controlling the ratio of flow rates of a multicomponent mixture, to the Wadens N-1 device of thermal converters 2g of users identical to the first thermoconverter, N-1 flow controllers and N-1 of the respective flow setting units, flow controllers are connected 40 with the second input of the first controller, the second inputs with the average output of the corresponding thermal converter, the extreme terminals of which are connected to the corresponding outputs of the power source, and the outputs of each flow regulator are connected to the control inputs of the corresponding actuators connected to the respective pipelines connected what 50 cut the corresponding bubblers with a mixer, which consists of the input and output bodies, divided by an electrical insulating heat-resistant plate with mounted on it gg thermocouples, in this case, each body is divided by the corresponding separation plates into N channels for gas, according to the number of components, the separation plates with a length of not less than 513487906 In this case, the lOdso input and output housing is located parallel to the corresponding distance from the walls with the entrance and the main channel of the output housing and The outlet pipes at a distance have a common wall of electro (l-2) d with it, where d is the equivalent padrav-insulating heat-resistant material diameter, and inside the mixer there is a corresponding gas channel in the inlet source thermocouple.