DOSING UNIT, PLANT FOR CONVEYING DENSE FLOW, AND METHOD FOR CONVEYING PULVERISED BULK MATERIAL

FIELD: power industry.SUBSTANCE: invention relates to power industry. A dosing unit includes dosing reservoir (DB) and at least one upstream gate (S) for smooth continuous dosed supply of pulverised bulk material of light-weight, polydisperse particles from device (B, SG) to several conveying pipes (FR1, FR2, FR3) to a user, which is located downstream; with that, both dosing reservoir (DB) and gate (S) have one unloading device (AE/DB, AE/S) and on each conveying pipe (FR1, FR2, FR3) there installed is a material flow measurement probe (FIC1, FIC2, FIC3), and the dosing unit has a pressure control to control pressure difference between dosing reservoir (DB) and the user. Unloading device (AE/DB) of dosing reservoir (DB) for each of conveying pipes (FR1, FR2, FR3) has its related and integral pulverised flow control (FI1, FI2, FI3); material flow measurement probe (FIC1, FIC2, FIC3) is connected to pulverised flow control (FI1, FI2, FI3) that is incorporated into the corresponding conveying pipe (FR1, FR2, FR3), and unloading device (AE/S) of gate (S) enters dosing reservoir (DB) through pulverised flow control (F14). The pressure control for the first regulation of pressure difference (PDC1-2) in gate (PIS1) and dosing reservoir (PI2) is connected at least to one pressure meter (PIS1) belonging to gate (S) and one pressure meter (PI2) installed on dosing reservoir (DB), for the second regulation of pressure difference (PDC3-R) in the dosing reservoir at unloading and in the user it is connected to pressure meter (PI3) belonging to unloading device (AE/DB) of dosing reservoir (DB), and pressure meter (PIR) that involves regulation of pressure difference between dosing reservoir (DB) and the user; the pressure control controls pressure in dosing reservoir (PI3) depending at least on the second regulation of pressure difference (PDC3-R), and the pressure control for the first control of pressure difference (PISA4-PIS1) between pressure in device (PISA4) and gate pressure (PIS1) is connected to pressure meter (PISA4) belonging to device (SG, B), and to pressure meter (PIS1) of gate (S), and controls gate pressure (PIS1) depending at least on one gate filling level (LIS/S) and the first regulation of pressure difference (PISA4-PIS1) bringing into action at least one exhaust unit (V) that can be connected to gate (S).EFFECT: invention allows providing continuous dosed supply of pulverised fuel.13 cl, 4 dwg Изобретение относится к области энергетики. Дозатор вкл