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The temperature of liquid slag wool manufacturing conventional control


The same) and the amplifier A. As sent to the thermostat temperature measurement input of TR, which is charged with the amount of the primary temperature control system feedback loop. F The temperature of liquid slag population TE2 thermocouple measurements, and then by measuring the bridge and amplifier A2 interference measurement is sent as a major regulator FR feedforward input, which is the temperature control system of feed-forward loop. Diversion tank electrode DC voltage is modulated by the phase shift and pulse thyristor rectifier circuit u constitutions of the supply of the implementing agencies. u-phase AC power by the current transformer TA and DC rectifier Uz is indirectly reflected by the electrode current, is to the current regulator m into the input, which is the temperature control system and current Vice-controlled variables and feedback form circuit. Figure 1 shows, this is a diversion tank temperature of liquid flux f for the population of feedforward and diversion tank and the flow channel electrode current I exit temperature of liquid slag composition C cascade and feedforward - feedback temperature control system . Object properties and the regulator 2 regulatory laws in order to facilitate analysis of the box drawn in Figure 1, Figure 2. ● ring 2 pit temperature control system block diagram of Xiamen column written by the heat balance equation diversion slots available objects in Figure 2 Gs regulation channel characteristics and interference channel in Gm):, GxCs ~ = n) GT One (2) Equation (1): K-channel amplification factor regulating the object, K a (where is the specific heat of liquid flux, q are the operating point for the fluid flow, a working point current,[link widoczny dla zalogowanych], R the equivalent resistance for the liquid slag); where (2); r is the object of pure lag time to adjust the channel, which determines the liquid residue in the residence time in the diversion tank; T. Time constant for the object transfer channels,[link widoczny dla zalogowanych], TI = ct where the liquid slag with the flow channel of the total heat capacity). Vice object properties Gs, can be approximated as: G1 (s ≈ K2 (3) the regulation of the primary regulator TR laws Gccs, the relatively large G in T, so in addition to considering the role and quickly than the reverse integral action to eliminate steady-state error , but also take into account the differential effect of lead, that is: Gc \Differential time. Vice regulator m the regulation of law Gcm, the Vice-9 '\(s) = (1) (5) feed-forward regulation of law FR regulator Gs, should use the dynamic feed-forward, namely: Gc3fs) eleven ~ a ecs) a K a (6) uT (S-type (6) : K | A. 3 normal control temperature to achieve the above discussion of the project. can be realized in engineering routine control of the temperature regulator main and operational amplifiers can be used, the use of resistors,[link widoczny dla zalogowanych], capacitors together to obtain the proper parameters of the regulator. the main regulator parameters: Kp1 a T. One RoC0 + R1CI-RoCoRC1 a deputy controller parameters Lai tK-2 R1C worthy of discussion is a feed-forward regulator,[link widoczny dla zalogowanych], it is a pure delay of the amplified link. Since e ~ is not a pure delay A rational expressions, it can not be achieved directly by Analog Devices, only instead of rational expressions with a similar e one. We use a similar formula for e---- a (1 + ri) nn This shows that one can use n-order inertia to approximate the delay link. When r is small, take n-1; when n is large, then take the link n-3 parameters: a R, Cn so that conventional temperature control system shown in Figure 3 Figure 3. pit temperature control system of conventional thermal power plant using liquid residue on the technical aspects of production of mineral wool made diversion tank temperature control system. However,[link widoczny dla zalogowanych], the flow channel itself, the different design of control system design of large, have seriously treatment. reference to the text ■ 1 剂 Shuter, Albert. Branch continuous production of slag wool with stains the relationship t the problem of surplus analysis of its control i6i. weed sound use of coal ash Zeng 4 1993 2 Li dip. Rock wool production line Village Main Drive Control Analysis and improvement of building smoked. Shandong Building Materials Institute, 1993 3 (Che Jing first of more lecturers) 19 ships a 07-2O Received ,1998-09-15 Xuzhou City received revised developed to produce with coal ash, waste rock re-sintering bricks 83.39 recently. Xuzhou coal gangue development and production of fly ash brick by experts. The product contains gangue 36.74, 46.65 ash, slag The total content of 83.39; the average compressive strength of each brick 15.3MPai lighter than the solid brick 5O0g; its thermal conductivity is 0.374W/mR, is 34.4 clay solid bricks. The products meet GB5010 - 93 standard to learn t. (sash shaking City brick office) * 10 *
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