SU1388664A2 - Device for checking fuel supply - Google Patents

Abstract

The invention relates to devices for monitoring the quality of the mode of heat supply in residential, public buildings and other objects and is intended to automatically send signals to the control room in the event of a variation in the temperature of the heat transfer medium in installations operating according to the temperature schedule. The aim of the invention is to improve the accuracy of the device. The goal is achieved by the fact that a device containing an outdoor temperature sensor 1, a heat carrier temperature sensor 2, an air sensor 3, for example, a slope of the temperature graph, a pointer 4, for example, a parallel displacement of the temperature graph, measuring unit 5, amplifier 6, block 7 separation of signals, for example, Low heat, Lots of heat, block 8 of formation of warning and accident signals, for example, Lot of heat, indicator 10 of warning i (L

Description

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Alarms, such as Low heat, alarm indicator 11, for example Low heat, warning indicator 12, for example Lots of heat, alarm indicator 13, for example Lots of heat, limit setting block 14, sensor 15 for outdoor air temperature, converter 16 resistance - voltage, switch 17 and temperature setpoint adjuster 18 At outdoor temperatures equal to or higher

The invention relates to laa control devices for the quality of the mode of heat supply in residential, public buildings and other objects and is intended for automatic signaling to the control room in case of a temperature deviation of the heat transfer medium in installations operating according to the temperature schedule, and is an improvement of the device based on Nomu aut,, sv. No

The aim of the invention is to increase the accuracy of the device.

The drawing shows a block diagram of the device.

The device comprises an outdoor temperature sensor 1 a heat carrier temperature sensor 2, a setting device 3, for example, a slope of the temperature schedule, a setting device 4, for example, a parallel displacement of the temperature schedule, a measuring unit 5, an amplifier 6, for example a phase-sensitive, a signal separation unit 7, for example Low heat and Lots of heat, block 8 of formation of warning and alarm signals, for example, Low heat, block of 9 formation of warning and alarm signal, for example, a lot of heat indicator 10 warn noy igna tion of such little heat, the indicator 11 alarm, e.g. Little heat warning indicator 12, for example a lot of heat, the LED alarm 13, for example,

break point of the temperature graph, the transducer 16 resists - the voltage of the outdoor temperature sensor 15 triggers and sends a signal to the input of the switch 17, which disconnects the outdoor temperature sensor 1 from the measuring unit 5 and connects to it a temperature level setpoint 18, equal to the resistance of the outdoor temperature sensor 1 at the break point. 1 il.

A lot of heat, limit setting unit 14, additional outdoor temperature sensor 15, resistance-voltage converter 16, switch 17 and temperature level adjuster 18, drawn from, for example, a reference resistor.

The device works as follows.

The measuring unit 5 is adjusted using the setpoint adjuster 3 of the slope of the temperature graph and the setpoint 4 of parallel transfer of the temperature plot to the desired mode of heat supply. The deviation of the temperature of the coolant from a given temperature graph is accompanied by the appearance in the diagonal of the bridge of the measuring unit 5 an imbalance signal that is fed to the phase-sensitive amplifier 6 and then to the unit 7 of the separation of signals Low heat and High heat. Depending on the phase of the signal entering the signal separation unit 7, the corresponding generation unit 8 or 9 - warning and alarm signals will turn on the corresponding indicator 10 (11) Low heat or 12 (13) Lots of heat at the control room.

When the external air temperature is equal to or higher than the temperature of the break point of the temperature graph, the transducer 16 of the outdoor air temperature sensor 15 operates and sends a signal to the switch input

17, which disconnects the outside air temperature sensor 1 from the measuring unit 5 and connects to it a temperature level adjuster 18 which has an electrical resistance equal to the resistance. Of the outdoor air temperature sensor (for example, copper resistance thermometer) at the break point of the temperature graph , and thus provides control over the initial z astk (shelf) temperature schedule.

With a slight deviation of the current value of the coolant temperature, which is monitored by sensor 2, the coolant temperature from a predetermined temperature graph at the control room, a warning signal is triggered, and if the deviation is greater, an alarm is triggered. The size of the zone. Preventive and alarm signaling Little heat and Much heat when the temperature of the coolant deviates from the temperature graph is set using a block, 14 set limit values.

Claims (1)

Invention Formula A device for controlling heat supply according to aut. No. 877253, characterized in that, in order to increase accuracy, an additional outdoor temperature sensor, a temperature level setting unit, a resistance-voltage converter and a switch are inserted into the communication gap of an outdoor temperature sensor with the corresponding input of the measuring unit by the first input and output, the switch is turned on, the output of the additional sensor is the outdoor air temperature through the resistance-voltage converter connected to the second input switch, the temperature level sensor output is connected to the third input of the switch.