SU985631A1 - Device for regulating operating mode of a group of water heating boilers - Google Patents

Description

(54) DEVICE FOR REGULATING THE OPERATION MODE OF THE BOILER HEATING GROUP

 The invention relates to a power system and can be used in thermal circuits of CHP and large heating boilers.

A device is known for controlling the operation mode of a group of boilers equipped with supply and discharge pipelines for network water, supply and discharge lines for recirculation, containing control valves installed in the supply and discharge lines, and temperature sensors. In this device, temperature sensors are installed in the recirculation collector | l.

A disadvantage of the known device is the low degree of sensitivity.

The purpose of the invention is to increase reliability.

The goal is achieved by the fact that the device for controlling the operation mode of a group of boilers equipped with supply and discharge pipelines of the network water, recirculation water supply and drain lines, containing control valves installed in the supply and drain lines, and temperature sensors, contains sensors water flow installed in the highway x

The recirculation water supply is connected to control valves installed in the respective recirculation water removal lines, and the temperature sensors are installed in the supply lines and connected to control valves installed in the respective recirculation water lines.

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The drawing shows the electrical circuit of the proposed device.

The device includes boilers 1 connected to the collector 15 of the supply water 2, collectors 3 recirculation with pumps 4 connected to them, recirculation water supply main 5 with a flow meter 6 and a temperature regulator 7, discharge pipe 8 with a measuring device 9 and Topcw 10 flow control.

On the pipelines connecting the boilers 1 to the collectors 2 of the mains supply, the heat is made bypass with the pressure regulator 11 (temperature

The device works as follows.

Net water with temperature-fcogp

30 comes from the consumer and with the temperature tnp is fed back to the consumer. In order to maintain the required temperature in front of the boiler (the required heating output of the boiler, water with temperature t is output temperature from the boiler supplied from recirculation pumps),

The regulation of the required water flow is made by the controller 7 according to the water temperature in front of each boiler. The amount of water supplied is measured by instrument b, which sets the flow rate of water withdrawn from this boiler through regulator 10 to recirculation pump 4.

Maintaining the set temperature of the water supplied to the heating system is accomplished by bypassing the bypass lines with the controllers 11, which operate either according to the given temperature in the heating network or according to the specified pressure drop across the boiler.

The proposed device makes it possible to increase the reliability of regulating the operation mode of a group of concurrently operating hot water boilers.

Claims (1)

Apparatus of the Invention for controlling the operation mode of a group of water-heating boilers equipped with supply and discharge pipelines for network water, recirculation water supply and drain lines, containing control valves installed in the supply and drain lines, and temperature sensors, characterized in that in order to increase reliability, it additionally contains water flow sensors installed in the recirculation water lines and connected to control valves installed in the corresponding ma recirculation water drainage ports, and temperature sensors installed in the supply lines and connected to control valves installed in the respective recirculation water supply lines. Sources of information taken into account in the examination 1. Buznikov. E.F. and others. Production and heating boilers. M., Energie, 1974, pp.35-45.