CN212322136U

CN212322136U - Old district heating installation hot water inlet control regulating circuit

Info

Publication number: CN212322136U
Application number: CN202021669485.0U
Authority: CN
Inventors: 周天沛
Original assignee: Xuzhou College of Industrial Technology
Current assignee: Xuzhou College of Industrial Technology
Priority date: 2020-08-12
Filing date: 2020-08-12
Publication date: 2021-01-08
Anticipated expiration: 2030-08-12

Abstract

A control and regulation circuit for hot water inflow of old residential district heating, when the hot water temperature of a heating pipeline reaches a set value, the resistance value of a thermistor Rt1 tightly attached to the heating pipeline is reduced, 8-pin time-base integrated circuit IC3 starts timing control, an AC contactor KM1 is electrified and closed, a normally open contact KM1-1 of the AC contactor KM1 is closed, a water pump motor M1 works, after a period of time delay, 3-pin output low level of the 8-pin time-base integrated circuit IC3, a triode BG1 is cut off, a relay J1 is de-electrified, the normally open contact J1-1 of the relay J1 is disconnected, the AC contactor KM1 is de-electrified, the normally open contact KM1-1 of the AC contactor KM1 is disconnected, the water pump motor M1 stops working until the hot water temperature of the heating pipeline is lower than the set value and then higher than the set value, the water pump motor 1 can work again, the heating, is particularly suitable for the tail end of a heating pipe network of an old community.

Description

Old district heating installation hot water inlet control regulating circuit

Technical Field

The utility model relates to an adjusting circuit specifically is an old district heating installation hot water control regulating circuit that intakes, belongs to heating hot water and adjusts technical field.

Background

In winter in northern China, a central heating mode is generally adopted. However, uneven heating can occur in the heating pipe network of the old community, particularly at the tail end of the pipe network, hot water circulation is slow, and the temperature of some users at home is only 10-12 ℃, so that some users spend money but cannot enjoy the indoor high-temperature environment, and the system is very uncomfortable.

Disclosure of Invention

Problem to above-mentioned prior art exists, the utility model provides an old district heating installation hot water control regulating circuit that intakes can carry out the hot water circulation through the water pump when heating pipe's hot water temperature reaches the setting value, improves the heating effect.

In order to achieve the purpose, the utility model provides a hot-water inlet control and regulation circuit for old residential area, which comprises a resistor R1, electrolytic capacitors C1-C3, a capacitor C4, a diode D1, a voltage stabilizing diode DW1, a triode BG1, a relay J1, a normally open contact J1-1 of a relay J1, a water pump motor M1, potentiometers RP 1-RP 2, a thermistor Rt1, a button SB1, a transformer B1, a rectifier stack UR1, a three-terminal voltage stabilizing integrated circuit IC1, an operational amplifier IC1, an 8-pin time base integrated circuit IC1, an alternating current contactor KM1, a normally open contact KM1-1 of the alternating current contactor KM1, a thermal relay FR1, a normally closed contact FR1-1 of the thermal relay FR1, fuses FU 1-FU 1, and a power switch SA,

u alternating current passes through a power switch SA, a fuse FU1 and a normally open main contact KM1-1 of an alternating current contactor KM1 and then is connected with one end of a thermal relay FR1, V alternating current passes through the power switch SA, the fuse FU2 and a normally open main contact KM1-1 of the alternating current contactor KM1 and then is connected with one end of a thermal relay FR1, W alternating current passes through the power switch SA, the fuse FU3 and a normally open main contact KM1-1 of the alternating current contactor KM1 and then is connected with one end of a thermal relay FR1, the other ends of the thermal relays FR1 are connected with a water pump motor M1, one end of an input port of a transformer B1 is connected between the power switch SA and the fuse FU3 on the W alternating current, and a neutral wire, a normally open contact J1-1 of the relay J1, an alternating current contactor KM1 and a normally closed contact FR1-1 of a thermal relay FR1 are connected in series and then connected to two ends of an input port of a transformer B1 in parallel; the two ends of the output port of the transformer B1 are respectively connected with a pin 1 and a pin 2 of a rectifier stack UR1, a pin 3 of the rectifier stack UR1 is respectively connected with the anode of an electrolytic capacitor C1 and a pin 1 of a three-terminal voltage-stabilizing integrated circuit IC1, a pin 3 of the three-terminal voltage-stabilizing integrated circuit IC1 is respectively connected with the anode of an electrolytic capacitor C2, one end of a resistor R1, a first fixed end of a potentiometer RP1, a sliding end of a potentiometer RP1, an 8 pin of an operational amplifier IC2, a first fixed end of a potentiometer RP2, a sliding end of a potentiometer RP2, an 8 pin of an 8-pin time-base integrated circuit IC3, a pin 4 of an 8-pin time-base integrated circuit IC3, the cathode of a diode D1 and one end of a relay J1, a pin 3 of the operational amplifier IC2 is respectively connected with the other end of a resistor R1 and one end of a thermistor Rt1, a pin 2 of the operational amplifier IC2 is respectively connected with the second fixed end of a potentiometer RP1 and the cathode of a DW, a pin DW 7 of, A pin 2 of the 8-pin time base integrated circuit IC3, a pin 6 of the 8-pin time base integrated circuit IC3 are respectively connected with the second fixed end of the potentiometer RP2, a pin 7 of the 8-pin time base integrated circuit IC3 and the anode of the electrolytic capacitor C3, a pin 5 of the 8-pin time base integrated circuit IC3 is connected with one end of the capacitor C4, a pin 3 of the 8-pin time base integrated circuit IC3 is connected with the base of the transistor BG1, the collector of the transistor BG1 is respectively connected with the anode of the diode D1 and the other end of the relay J1, a pin 4 of the rectifier stack UR1, the cathode of the electrolytic capacitor C1, a pin 2 of the three-terminal voltage regulator integrated circuit IC1, the cathode of the electrolytic capacitor C2, the other end of the thermistor 1, the anode of the voltage regulator diode DW1, a pin 4 of the operational amplifier IC2, the other end of the button SB1, the cathode of the electrolytic capacitor C3, a pin 1 of the 8-pin time base integrated circuit IC3, the other end of.

As a further improvement of the utility model, the model of the three-terminal voltage-stabilizing integrated circuit IC1 is 7805; the model of the operational amplifier IC2 is LM 358; the model number of the 8-pin time base integrated circuit IC3 is NE 555.

As a further improvement of the utility model, the triode BG1 is an NPN tube type with a model of 3DG 12.

As a further improvement of the present invention, the diode D1 has a model number IN 4007.

As a further improvement of the utility model, the AC contactor KM1 is JC0-10 in model number; the model number of the thermal relay FR1 is JR 0-10.

As a further improvement of the utility model, the relay J1 is a DC relay with model number JRX-20F.

Compared with the prior art, the utility model comprises a resistor R1, electrolytic capacitors C1-C1, a capacitor C1, a diode D1, a voltage stabilizing diode DW1, a triode BG1, a relay J1, a normally open contact J1-1 of the relay J1, a motor M1, potentiometers RP 1-RP 1, a thermistor Rt1, a button SB1, a transformer B1, a rectifier stack UR1, a three-terminal voltage stabilizing integrated circuit IC1, an operational amplifier IC1, an 8-pin time-base integrated circuit IC1, an alternating current contactor KM1, a normally open main contact KM1-1 of the alternating current contactor KM1, a thermal relay FR1, a normally closed contact FR1-1 of the thermal relay FR1, fuses FU 1-1, a power switch SA, when the hot water temperature of a heating pipeline reaches a set value, the resistance value of the normally open resistor Rt1 tightly attached to the heating pipeline is reduced, the 8-pin time-base integrated circuit is started, the alternating current contactor FU1 is started, the AC 1-KM 1 is closed, the AC switch is closed contact, water pump motor M1 work, after a period of time delay, 8 foot time base integrated circuit IC 3's 3 foot output low level, triode BG1 ends, relay J1 loses the electricity, relay J1's normally open contact J1-1 disconnection, ac contactor KM1 loses the electricity, ac contactor KM 1's normally open contact KM1-1 disconnection, water pump motor M1 stop work, until heating pipe's hot water temperature is less than the setting value, then is higher than the setting value again, water pump motor 1 can work once more, the utility model discloses can carry out hot water circulation through the water pump when heating pipe's hot water temperature reaches the setting value, improve the heating effect, the end of the heating pipe network of especially adapted old district.

Drawings

Fig. 1 is a schematic circuit diagram of the present invention.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1, a control and regulation circuit for hot water inflow of old community comprises a resistor R1, electrolytic capacitors C1-C3, a capacitor C4, a diode D1, a zener diode DW1, a triode BG1, a relay J1, a normally open contact J1-1 of the relay J1, a water pump motor M1, potentiometers RP 1-RP 2, a thermistor Rt1, a button SB1, a transformer B1, a rectifier stack UR1, a three-terminal voltage-stabilizing integrated circuit IC1, an operational amplifier IC2, an 8-pin time-base integrated circuit IC3, an alternating current contactor KM1, a normally open main contact KM1-1 of an alternating current contactor KM1, a thermal relay FR1, a normally closed contact FR1-1 of a thermal relay FR1, three-terminal fuses FU 1-FU 3, a power switch SA, wherein the model number of the voltage-stabilizing integrated circuit IC1 is 7805; the model of the operational amplifier IC2 is LM 358; the model of the 8-pin time base integrated circuit IC3 is NE 555; the triode BG1 is an NPN tube type with the model number of 3DG 12; the model of the diode D1 is IN 4007; the model of the alternating current contactor KM1 is JC 0-10; the model of the thermal relay FR1 is JR 0-10; the relay J1 is a direct current relay with model number JRX-20F.

The resistance values of these elements in fig. 1 are well known and can be adjusted as required by those skilled in the art.

The working principle of the utility model is as follows: as shown in fig. 1, when the hot water temperature of the heating pipeline does not reach the set requirement, the resistance value of the thermistor Rt1 tightly attached to the heating pipeline is large, the voltage of pin 3 of the operational amplifier IC2 is larger than the voltage of pin 2, and pin 1 of the operational amplifier IC2 outputs high level; when the hot water temperature of the heating pipeline reaches a set value, the resistance value of a thermistor Rt1 tightly attached to the heating pipeline is reduced, the voltage of a pin 3 of an operational amplifier IC2 is less than the voltage of a pin 2, a pin 1 of the operational amplifier IC2 outputs a low level, a pin 2 of an 8-pin time base integrated circuit IC3 receives a negative pulse, a pin 3 of an 8-pin time base integrated circuit IC3 outputs a high level, a triode BG1 is switched on, a relay J1 is electrified and attracted, a normally open contact J1-1 of a relay J1 is closed, an alternating current contactor KM1 is electrified and attracted, a normally open contact KM1-1 of an alternating current contactor KM1 is closed, a water pump motor M1 works to pump hot water to a radiator for hot water circulation, after a period of time delay, a pin 3 of an 8-pin time base integrated circuit IC3 outputs a low level, a triode BG1 is cut off, a relay J1 is de-electrified, a normally open contact J1-1 of a relay J, the normally open contact KM1-1 of the alternating current contactor KM1 is disconnected, the water pump motor M1 stops working until the hot water temperature of a heating pipeline is lower than a set value and then higher than the set value, and the water pump motor 1 can not work again; or after the water pump motor M1 stops working, the hot water temperature of the heating pipeline is still high, the button SB1 can be pressed, which is equivalent to giving a negative pulse to the 2 pin of the 8-pin time base integrated circuit IC3, the water pump motor M1 can work again, the adjusting potentiometer RP1 can adjust the set value of the hot water temperature of the heating pipeline, and the adjusting potentiometer RP2 can adjust the working time of the water pump motor 1.

Claims

1. A heating hot water inlet control and regulation circuit for old communities is characterized by comprising a resistor R1, electrolytic capacitors C1-C3, a capacitor C4, a diode D1, a voltage stabilizing diode DW1, a triode BG1, a relay J1, a normally open contact J1-1 of the relay J1, a water pump motor M1, potentiometers RP 1-RP 2, a thermistor Rt1, a button SB1, a transformer B1, a rectifier stack UR1, a three-terminal voltage stabilizing integrated circuit IC1, an operational amplifier IC2, an 8-pin time base integrated circuit IC3, an alternating current contactor KM1, a normally open main contact KM1-1 of an alternating current contactor KM1, a thermal relay FR1, a normally closed contact FR1-1 of a thermal relay FR1, fuses FU 1-FU 3 and a power switch SA,

2. The old community heating hot water inlet control and regulation circuit of claim 1, wherein the three-terminal voltage-stabilizing integrated circuit IC1 is 7805; the model of the operational amplifier IC2 is LM 358; the model number of the 8-pin time base integrated circuit IC3 is NE 555.

3. The heating water inflow control and regulation circuit of an old community according to claim 1, wherein the transistor BG1 is an NPN transistor with a model number of 3DG 12.

4. The control circuit of claim 1, wherein the diode D1 is of type IN 4007.

5. The control and regulation circuit for heating water hot water inflow of old cells according to claim 1, wherein the type of the alternating current contactor KM1 is JC 0-10; the model number of the thermal relay FR1 is JR 0-10.

6. The control and regulation circuit of claim 1, wherein the relay J1 is a DC relay of JRX-20F.