SU1341461A1 - Device for controlling heat consumption for heating - Google Patents

Abstract

This invention relates to district heating. The purpose of the invention is to improve the control accuracy and reduce the size of the control unit. For this, weather sensors are installed. The converter of the I control unit is designed as a group of analog-to-digital inverters (ADC) 9 and digital-to-analog converters (DL) 10. Moreover, ADC 9 is connected by its inputs to sensors 6,7,8 meteorological conditions and to the output of heat meter 2, and output to the input of the computing unit 3. Ts. AP 10 is connected to the input to the output of the computing unit and the output to the input of the regulator 5 of the executive mechanism. If the calculated t-ry differs from a given signal from block 3, it is converted into a DAC K) electrically, which is fed to the input of controller 5, after which the actuator changes the degree of opening of the regulator, the flow rate of the coolant and heat for heating the building, but inside the building will not be installed preset t-ra. When the flow rate of the coolant reaches its maximum value, comp. The unit through the DAC 10 turns off the controller 5. Thus, a maximum consideration of the factors influencing the object of control and the system configuration is achieved, the physical model of the object is replaced with a mathematical one. 1 il. S (L in gpeplazegb fiecmHoa Oggopit / na mcmeffa with 4 N O5 g:

Description

The invention relates to decentralized ten supply and can be used in systems for controlling heat consumption for heating.

The purpose of the invention is to demonstrate the accuracy of regulation and reduce the size of the control unit.

The drawing shows a diagram of a device for controlling the heat consumption for heating.

The device contains a control unit 1 connected to a heat meter 2 and includes a converter and a computing unit. 3 with block 4 tasks, controller 5, weather sensors: sensor 6 is the outside air temperature sensor 7, wind direction and speed sensor 7 and solar radiation intensity sensor 8 . The converter of the control unit 1 is designed as a group of an apalo-digital converter (ADC) 9 and a digital-analog converter (DAC) 10, the first one being connected by inputs to sensors 6–8 meteorological conditions and to the output of heat meter 1, and output to the input the computational unit 3, and the second - the input with the output of the computational unit 3 and the output - to the input of the regulator 5. The latter is connected via an actuator AND to the regulator 12. The ADC 9 is connected to one of its inputs by one of its inputs to the flow meter 13. Heat meter 2 includes an induction flow meter 14 for determining heating flow rate for heating, two sensors 15 and 16 for measuring coolant temperature in the supply pipe 17 and return line 18, respectively, and unit 19 for calculating the instantaneous heat flow and for accounting for the amount of heat released for heating . Unit 4 of the task performs the task of the temperature inside the heated buildings, the dynamic characteristics of the buildings and the maximum value of the flow of coolant.

The device works as follows.

The signals from sensors 6-8, characterizing the meteorological conditions, from the meter 13 of the coolant flow and from the heat meter 2 arrive in the ADC 9 of the control unit 1, where they are converted into a digital code, and then into the computing unit, 1 de, the average temperature inside the heated buildings is calculated and comparison with the value set by the block 4 tasks.

Make up, 11 K. K. Kharitonov

Editor A. OgarTehred I. VeresKorrektor .L. .Zimokosov

Order 4424/44 Circulation 659 Subscription

1 NIIPI State Committee for Inventions and Openings:

1 13035, Moscow, F - 35, Raushsk nab., 4/5 Pr production of a polygraphic enterprise, i-. Uzhgorod ,.h. Project, 4

If the calculated temperature differs from the given signal from the computing unit 3, it is converted into an DAC 10 into an electric one, which is fed to the input of the controller 5, after which the latter through the actuator 11 changes the opening of the regulator 12. The change in the opening of the regulator 12 causes change in heat carrier flow and heat for heating of the heater until the set temperature is established inside the building.

When the expenditure of the carrier fluid reaches its maximum value, which is set; 1 in block 4 tasks, the computational

5 block 3 through the DAC 10 open; controller 5 comes from the actuator 1 1 and. directly affecting the isp; n1 mechanism, 1 1, gives the command to close the regulator 12 until the flow rate is less than the maximum

by the amount laid down in block 4 of tasks, after which the ispolitelny mechanism 11 is again connected to the regulating authority 12.

Adjustment accuracy

This is achieved as a result of maximally taking into account the factors influencing the object of regulation and the adjustment of the system setting as compared with the use of the model of an adjustable object with accumulating liquid.

0 Reducing the dimensions of the control unit is done by replacing the physical model of the object with the mathematical one.

Claims (1)

Invention Formula 35 45 A device for controlling the heat consumption for heating, contains a control unit connected to a heat meter and includes an inverter, a computing unit with a task unit and a controller 40, characterized in that, in order to improve the control accuracy and skill)) additionally contains weather sensors, and the transducer of the co1 trol unit; - not as analog-digital group | 1x digital and analogue transducers, the first one being connected by its inputs to weather sensors and the heat meter output, and the output to the input unit of the calculating block, and the second input .--- to the output of the optical unit and output to control input.