CN115654770A - Temperature regulation and control system for supplying heat by using waste heat of transformer - Google Patents
Temperature regulation and control system for supplying heat by using waste heat of transformer Download PDFInfo
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- CN115654770A CN115654770A CN202211313641.3A CN202211313641A CN115654770A CN 115654770 A CN115654770 A CN 115654770A CN 202211313641 A CN202211313641 A CN 202211313641A CN 115654770 A CN115654770 A CN 115654770A
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Abstract
The utility model provides a temperature regulation and control system that utilizes transformer waste heat to carry out heat supply, relates to a temperature regulation and control technique that utilizes transformer waste heat to carry out heat supply, in order to solve the problem that current transformer waste heat can't obtain effective utilization. The oil circulating pump is communicated with the transformer oil tank and the heat exchanger; the heat exchanger is communicated with the transformer oil tank; a radiator is arranged on the side of the transformer oil tank; the heat exchanger is communicated with the compressor and the condenser; the condenser is communicated with the heat exchanger through a throttle valve; the air pump is arranged in the room of the transformer substation building; the air pump is communicated with the condenser; the first temperature sensor, the second temperature sensor and the third temperature sensor are respectively connected with the controller; the controller and the radiator are controlled to be opened or closed; the adjusting signal output end of the controller is connected with the adjusting signal input end of the throttle valve. The beneficial effects are for having realized the effective utilization to transformer waste heat.
Description
Technical Field
The invention relates to a temperature regulation and control technology for supplying heat by using transformer waste heat.
Background
With the improvement of living standard and quality of life of people, the problems of environmental pollution and energy consumption are more and more concerned by people, and in a transformer substation, a main control room and a protection room have the requirements of heat supply area and heat supply temperature, which are called as heat supply requirements for short; in order to meet the heat supply requirement, more than 95% of the existing transformer substation buildings are heated by electric heaters; meanwhile, a plurality of transformers exist in the transformer substation, under the condition that the transformers work normally, the transformers can generate a large amount of heat, and the heat generated by the transformers is conducted to the outside air through a circulating system of the radiator and is not utilized; if the heat generated by the transformer is directly conducted to the transformer substation building, although certain electric energy can be saved, the heat generated by the transformer changes along with the change of the load, namely, the heat conducted to the transformer substation building is uncontrollable, so that the heat supply requirements of a main control room and a protection room cannot be met, and the normal and reliable operation of the transformer cannot be guaranteed due to the change of the heat dissipation environment, and the service life of the transformer is influenced.
Disclosure of Invention
The invention aims to solve the problem that the waste heat of the existing transformer cannot be effectively utilized, and provides a temperature regulation and control system for supplying heat by using the waste heat of the transformer.
The invention relates to a temperature regulation and control system for supplying heat by using transformer waste heat, which comprises a controller, a heat exchanger, a condenser, an oil circulating pump, a compressor, a throttle valve, an air pump, a first temperature sensor, a second temperature sensor and a third temperature sensor, wherein the controller is connected with the heat exchanger;
an oil inlet of the oil circulating pump is communicated with an oil outlet of a transformer oil tank; the oil outlet of the oil circulating pump is communicated with the oil inlet of the heat exchanger; the oil outlet of the heat exchanger is communicated with the oil inlet of the transformer oil tank; meanwhile, a radiator is arranged on the side of the transformer oil tank;
a heat pump working medium outlet of the heat exchanger is communicated with a heat pump working medium inlet of the compressor; a heat pump working medium outlet of the compressor is communicated with a heat pump working medium inlet of the condenser; a heat pump working medium outlet of the condenser is communicated with a heat pump working medium inlet of the heat exchanger through a throttle valve;
an air inlet of the air pump is arranged in a room of the transformer substation building; the air outlet of the air pump is communicated with the air inlet of the condenser; the air outlet of the condenser is arranged in the room of the transformer substation building;
the first temperature sensor is arranged at an oil outlet of the transformer oil tank, and a first temperature signal output end of the first temperature sensor is connected with a first temperature signal input end of the controller; the controller generates a closing signal according to the first temperature signal, and a closing signal output end of the controller is connected with a closing signal input end of the radiator;
the second temperature sensor is arranged at an oil inlet of the transformer oil tank, and a second temperature signal output end of the second temperature sensor is connected with a second temperature signal input end of the controller; the controller generates a starting signal according to the second temperature signal, and a starting signal output end of the controller is connected with a starting signal input end of the radiator;
the third temperature sensor is arranged indoors of the transformer substation building, and a third temperature signal output end of the third temperature sensor is connected with a third temperature signal input end of the controller; the controller generates an adjusting signal according to the third temperature signal, and an adjusting signal output end of the controller is connected with an adjusting signal input end of the throttle valve.
Further, the oil outlet of the transformer oil tank is arranged at the top end of the transformer oil tank, and the oil inlet of the transformer oil tank is arranged at the bottom end of the transformer oil tank.
Further, the controller comprises a radiator closing control circuit, a radiator opening control circuit and a throttle valve control circuit;
the radiator closing control circuit comprises a first threshold setting circuit and a first temperature comparison circuit;
the first threshold setting circuit is used for setting a first temperature threshold, and a first threshold voltage output end of the first threshold setting circuit is connected with a first threshold voltage input end of the first temperature comparison circuit; a first temperature signal output end of the first temperature sensor is connected with a first temperature signal input end of the first temperature comparison circuit; the first temperature comparison circuit converts an input first temperature signal into a first acquisition voltage, compares the first acquisition voltage with an input first threshold voltage, generates a closing signal if the first acquisition voltage is smaller than the first threshold voltage, and outputs the closing signal for closing the radiator;
the radiator opening control circuit comprises a second threshold setting circuit and a second temperature comparison circuit;
the second threshold setting circuit is used for setting a second temperature threshold, and a second threshold voltage output end of the second threshold setting circuit is connected with a second threshold voltage input end of the second temperature comparison circuit; a second temperature signal output end of the second temperature sensor is connected with a second temperature signal input end of the second temperature comparison circuit; the second temperature comparison circuit converts the input second temperature signal into a second acquisition voltage, compares the second acquisition voltage with the input second threshold voltage, generates a starting signal if the second acquisition voltage is greater than the second threshold voltage, and outputs the starting signal for starting the radiator;
the throttle valve control circuit comprises a third threshold value setting circuit, a fourth threshold value setting circuit, a third temperature comparison circuit and a fourth temperature comparison circuit;
the third threshold setting circuit is used for setting a third temperature threshold; the fourth threshold setting circuit is used for setting a fourth temperature threshold; a third threshold voltage output end of the third threshold setting circuit is connected with a third threshold voltage input end of the third temperature comparison circuit; a fourth threshold voltage output end of the fourth threshold setting circuit is connected with a fourth threshold voltage input end of the fourth temperature comparison circuit; a third temperature signal output end of the third temperature sensor is simultaneously connected with third temperature signal input ends of the third temperature comparison circuit and the fourth temperature comparison circuit; the third temperature comparison circuit converts an input third temperature signal into a third acquisition voltage, compares the third acquisition voltage with an input third threshold voltage, and generates a forward rotation signal if the third acquisition voltage is less than the third threshold voltage; and the forward rotation signal of the third temperature comparison circuit causes the throttle valve to rotate in the forward direction; the fourth temperature comparison circuit converts the input third temperature signal into a third acquisition voltage, compares the third acquisition voltage with an input fourth threshold voltage, and generates a reverse rotation signal if the third acquisition voltage is greater than the fourth threshold voltage; and the reverse rotation signal of the fourth temperature comparison circuit causes the throttle valve to rotate in reverse.
Further, the first threshold setting circuit comprises a slide rheostat R1 and a resistor R2;
the first temperature sensor comprises a resistor R3 and a resistor R4;
the first temperature comparison circuit and the third temperature comparison circuit have the same circuit structure; the first temperature comparison circuit comprises a first comparator T1, a capacitor C1, a resistor R5 and a resistor R6;
the fixed end of the sliding rheostat R1 is connected with the positive electrode output end of the power supply VSS, and the moving end of the sliding rheostat R1 is connected with one end of the resistor R2, one end of the resistor R5 and the non-inverting input end of the first comparator T1 at the same time; the other end of the resistor R2 is grounded;
one end of the resistor R3 is grounded, and the other end of the resistor R3 is simultaneously connected with one end of the resistor R4, one end of the capacitor C1 and the inverted input end of the first comparator T1; the other end of the resistor R4 is connected with the anode output end of a 3.3V power supply; one end of the capacitor C1 is grounded;
the other end of the resistor R5 is connected with the anode of the diode D1;
the positive terminal of the first comparator T1 is connected with the positive output end of the power supply VCC and one end of the resistor R6 at the same time; the negative terminal of the first comparator T1 is grounded; the output end of the positive terminal of the first comparator T1 is connected to the other end of the resistor R6 and the cathode of the diode D1, and the common end is the shutdown signal output end of the first temperature comparison circuit.
Further, the circuit structures of the second temperature comparison circuit and the fourth temperature comparison circuit are the same; the second temperature comparison circuit comprises a first comparator T2, a capacitor C2, a resistor R7 and a resistor R8;
one end of the resistor R7 is connected with the inverting input end of the second comparator T2, and the common end is a second threshold voltage input end of the second temperature comparison circuit;
one end of the capacitor C2 is connected to the non-inverting input terminal of the second comparator T2, and the common terminal is a second temperature signal input terminal of the second temperature comparison circuit; the other end of the capacitor C2 is grounded;
the other end of the resistor R7 is connected with the anode of the diode D2;
the positive terminal of the second comparator T2 is connected with the positive output end of the power supply VCC and one end of the resistor R8; the negative terminal of the second comparator T2 is grounded; the output end of the positive terminal of the second comparator T2 is connected to the other end of the resistor R8 and the cathode of the diode D2, and the common end is the on signal output end of the second temperature comparing circuit 3-4.
Furthermore, the models of the first temperature sensor, the second temperature sensor and the third temperature sensor are all PT100.
The invention has the beneficial effects that: the temperature of an inlet and an outlet of a transformer oil tank is acquired through a temperature sensor, so that the radiator is accurately controlled; meanwhile, under the coordination of mechanical energy generated by the compressor, the waste heat utilization heat exchanger and the condenser generated by the transformer are transferred to the indoor of a transformer substation building, so that the safe and efficient operation of the transformer is ensured, the heat supply requirements of a main control room and a protection room are met, and the effective utilization of the transformer waste heat is realized.
Drawings
Fig. 1 is a block diagram of a temperature control system for supplying heat by using residual heat of a transformer according to a first embodiment;
fig. 2 is a block diagram of a heat sink shutdown control circuit according to a third embodiment;
fig. 3 is a block diagram of a radiator turn-on control circuit according to a third embodiment;
FIG. 4 is a block diagram of a throttle control circuit according to a third embodiment;
FIG. 5 is a circuit diagram of a first temperature comparison circuit according to a fourth embodiment;
fig. 6 is a circuit diagram of a second temperature comparison circuit in the fifth embodiment.
Detailed Description
The first specific implementation way is as follows: the present embodiment is described with reference to fig. 1, and the temperature control system for supplying heat by using transformer waste heat according to the present embodiment includes a controller 3, a heat exchanger 4, a condenser 5, an oil circulation pump 6, a compressor 7, a throttle valve 8, an air pump 9, a first temperature sensor 10, a second temperature sensor 11, and a third temperature sensor 12;
an oil inlet of the oil circulating pump 6 is communicated with an oil outlet of an oil tank of the transformer 1; an oil outlet of the oil circulating pump 6 is communicated with an oil inlet of the heat exchanger 4; an oil outlet of the heat exchanger 4 is communicated with an oil inlet of an oil tank of the transformer 1; meanwhile, a radiator 2 is arranged on the oil tank side of the transformer 1;
a heat pump working medium outlet of the heat exchanger 4 is communicated with a heat pump working medium inlet of the compressor 7; a heat pump working medium outlet of the compressor 7 is communicated with a heat pump working medium inlet of the condenser 5; a heat pump working medium outlet of the condenser 5 is communicated with a heat pump working medium inlet of the heat exchanger 4 through a throttle valve 8;
the air inlet of the air pump 9 is arranged in the room of the substation building 13; the air outlet of the air pump 9 is communicated with the air inlet of the condenser 5; the air outlet of the condenser 5 is arranged in the room of the transformer substation building 13;
the first temperature sensor 10 is arranged at an oil outlet of an oil tank of the transformer 1, and a first temperature signal output end of the first temperature sensor 10 is connected with a first temperature signal input end of the controller 3; the controller 3 generates a closing signal according to the first temperature signal, and a closing signal output end of the controller 3 is connected with a closing signal input end of the radiator 2;
the second temperature sensor 11 is arranged at an oil inlet of an oil tank of the transformer 1, and a second temperature signal output end of the second temperature sensor 11 is connected with a second temperature signal input end of the controller 3; the controller 3 generates a starting signal according to the second temperature signal, and a starting signal output end of the controller 3 is connected with a starting signal input end of the radiator 2;
the third temperature sensor 12 is arranged in the room of the substation building 13, and a third temperature signal output end of the third temperature sensor 12 is connected with a third temperature signal input end of the controller 3; the controller 3 generates an adjustment signal as a function of the third temperature signal, and an adjustment signal output of the controller 3 is connected to an adjustment signal input of the throttle valve 8.
The second embodiment is as follows: in the present embodiment, the temperature control system for supplying heat by using the residual heat of the transformer is further defined, in the present embodiment, an oil outlet of the oil tank of the transformer 1 is disposed at the top end of the oil tank of the transformer 1, and an oil inlet of the oil tank of the transformer 1 is disposed at the bottom end of the oil tank of the transformer 1.
The third concrete implementation mode: the present embodiment is described with reference to fig. 2 to 4, and the present embodiment is further limited to the temperature regulation system for supplying heat by using transformer residual heat according to the first embodiment, in the present embodiment, the controller 3 includes a radiator closing control circuit, a radiator opening control circuit, and a throttle valve control circuit;
the radiator closing control circuit comprises a first threshold setting circuit 3-1 and a first temperature comparison circuit 3-2;
the first threshold setting circuit 3-1 is used for setting a first temperature threshold, and a first threshold voltage output end of the first threshold setting circuit 3-1 is connected with a first threshold voltage input end of the first temperature comparison circuit 3-2; a first temperature signal output end of the first temperature sensor 10 is connected with a first temperature signal input end of the first temperature comparison circuit 3-2; the first temperature comparison circuit 3-2 converts the input first temperature signal into a first acquisition voltage, compares the first acquisition voltage with the input first threshold voltage, and if the first acquisition voltage is smaller than the first threshold voltage, the first temperature comparison circuit 3-2 generates a turn-off signal, and the turn-off signal output by the first temperature comparison circuit 3-2 is used for turning off the radiator 2;
the radiator starting control circuit comprises a second threshold setting circuit 3-3 and a second temperature comparison circuit 3-4;
the second threshold setting circuit 3-3 is used for setting a second temperature threshold, and a second threshold voltage output end of the second threshold setting circuit 3-3 is connected with a second threshold voltage input end of the second temperature comparison circuit 3-4; a second temperature signal output end of the second temperature sensor 11 is connected with a second temperature signal input end of the second temperature comparison circuit 3-4; the second temperature comparison circuit 3-4 converts the input second temperature signal into a second acquisition voltage, compares the second acquisition voltage with the input second threshold voltage, and if the second acquisition voltage is greater than the second threshold voltage, the second temperature comparison circuit 3-4 generates a start signal, and the start signal output by the second temperature comparison circuit 3-4 is used for starting the radiator 2;
the throttle valve control circuit comprises a third threshold setting circuit 3-5, a fourth threshold setting circuit 3-6, a third temperature comparison circuit 3-7 and a fourth temperature comparison circuit 3-8;
the third threshold setting circuit 3-5 is used for setting a third temperature threshold; the fourth threshold setting circuit 3-6 is used for setting a fourth temperature threshold; a third threshold voltage output end of the third threshold setting circuit 3-5 is connected with a third threshold voltage input end of the third temperature comparison circuit 3-7; a fourth threshold voltage output end of the fourth threshold setting circuit 3-6 is connected with a fourth threshold voltage input end of the fourth temperature comparison circuit 3-8; a third temperature signal output end of the third temperature sensor 12 is simultaneously connected with third temperature signal input ends of the third temperature comparison circuits 3-7 and the fourth temperature comparison circuits 3-8; the third temperature comparison circuit 3-7 converts the input third temperature signal into a third acquisition voltage, compares the third acquisition voltage with the input third threshold voltage, and if the third acquisition voltage is smaller than the third threshold voltage, the third temperature comparison circuit 3-7 generates a forward rotation signal; and the forward rotation signal of the third temperature comparing circuit 3-7 causes the throttle valve to rotate in the forward direction; the fourth temperature comparison circuit 3-8 converts the input third temperature signal into a third acquisition voltage, compares the third acquisition voltage with an input fourth threshold voltage, and if the third acquisition voltage is greater than the fourth threshold voltage, the fourth temperature comparison circuit 3-8 generates a reverse rotation signal; and the reverse rotation signal of the fourth temperature comparison circuit 3-8 causes the throttle valve to rotate in reverse.
The fourth concrete implementation mode: the present embodiment is described with reference to fig. 5, and the present embodiment is further limited to the temperature regulation system for supplying heat by using transformer residual heat according to the first embodiment, in the present embodiment, the first threshold setting circuit 3-1 includes a sliding rheostat R1 and a resistor R2;
the first temperature sensor 10 includes a resistor R3 and a resistor R4;
the first temperature comparison circuit 3-2 and the third temperature comparison circuit 3-7 have the same circuit structure; the first temperature comparison circuit 3-2 comprises a first comparator T1, a capacitor C1, a resistor R5 and a resistor R6;
the fixed end of the slide rheostat R1 is connected with the positive output end of the power supply VSS, and the moving end of the slide rheostat R1 is simultaneously connected with one end of the resistor R2, one end of the resistor R5 and the non-inverting input end of the first comparator T1; the other end of the resistor R2 is grounded;
one end of the resistor R3 is grounded, and the other end of the resistor R3 is simultaneously connected with one end of the resistor R4, one end of the capacitor C1 and the inverted input end of the first comparator T1; the other end of the resistor R4 is connected with the anode output end of a 3.3V power supply; one end of the capacitor C1 is grounded;
the other end of the resistor R5 is connected with the anode of the diode D1;
the positive terminal of the first comparator T1 is connected with the positive output end of the power supply VCC and one end of the resistor R6 at the same time; the negative terminal of the first comparator T1 is grounded; the output end of the positive terminal of the first comparator T1 is connected to the other end of the resistor R6 and the cathode of the diode D1, and the common end is the turn-off signal output end of the first temperature comparing circuit 3-2.
In the present embodiment, the resistor R6 is a pull-up resistor; the capacitor C1 is a filter capacitor.
The fifth concrete implementation mode: the present embodiment is described with reference to fig. 6, and the present embodiment is further limited to the temperature control system for supplying heat by using transformer residual heat according to the first embodiment, in which the second temperature comparison circuit 3-4 and the fourth temperature comparison circuit 3-8 have the same circuit structure; and the second temperature comparison circuit 3-4 includes a first comparator T2, a capacitor C2, a resistor R7, and a resistor R8;
one end of the resistor R7 is connected to the inverting input terminal of the second comparator T2, and the common terminal is a second threshold voltage input terminal of the second temperature comparing circuit 3-4;
one end of the capacitor C2 is connected with the non-inverting input end of the second comparator T2, and the common end is a second temperature signal input end of the second temperature comparison circuit 3-4; the other end of the capacitor C2 is grounded;
the other end of the resistor R7 is connected with the anode of the diode D2;
the positive terminal of the second comparator T2 is connected with the positive output end of the power supply VCC and one end of the resistor R8 at the same time; the negative terminal of the second comparator T2 is grounded; the output end of the positive terminal of the second comparator T2 is connected to the other end of the resistor R8 and the cathode of the diode D2, and the common end is the on signal output end of the second temperature comparing circuit 3-4.
The sixth specific implementation mode is as follows: in this embodiment, the temperature control system for supplying heat by using the residual heat of the transformer according to the first embodiment is further limited, and in this embodiment, the types of the first temperature sensor 10, the second temperature sensor 11, and the third temperature sensor 12 are PT100.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (6)
1. A temperature regulation and control system for supplying heat by using transformer waste heat is characterized by comprising a controller (3), a heat exchanger (4), a condenser (5), an oil circulating pump (6), a compressor (7), a throttle valve (8), an air pump (9), a first temperature sensor (10), a second temperature sensor (11) and a third temperature sensor (12);
an oil inlet of the oil circulating pump (6) is communicated with an oil outlet of an oil tank of the transformer (1); an oil outlet of the oil circulating pump (6) is communicated with an oil inlet of the heat exchanger (4); an oil outlet of the heat exchanger (4) is communicated with an oil inlet of an oil tank of the transformer (1); meanwhile, a radiator (2) is arranged on the oil tank side of the transformer (1);
a heat pump working medium outlet of the heat exchanger (4) is communicated with a heat pump working medium inlet of the compressor (7); a heat pump working medium outlet of the compressor (7) is communicated with a heat pump working medium inlet of the condenser (5); a heat pump working medium outlet of the condenser (5) is communicated with a heat pump working medium inlet of the heat exchanger (4) through a throttle valve (8);
an air inlet of the air pump (9) is arranged in a room of a transformer substation building (13); the air outlet of the air pump (9) is communicated with the air inlet of the condenser (5); the air outlet of the condenser (5) is arranged in the room of the transformer substation building (13);
the first temperature sensor (10) is arranged at an oil outlet of an oil tank of the transformer (1), and a first temperature signal output end of the first temperature sensor (10) is connected with a first temperature signal input end of the controller (3); the controller (3) generates a closing signal according to the first temperature signal, and a closing signal output end of the controller (3) is connected with a closing signal input end of the radiator (2);
the second temperature sensor (11) is arranged at an oil inlet of an oil tank of the transformer (1), and a second temperature signal output end of the second temperature sensor (11) is connected with a second temperature signal input end of the controller (3); the controller (3) generates a starting signal according to the second temperature signal, and the starting signal output end of the controller (3) is connected with the starting signal input end of the radiator (2);
the third temperature sensor (12) is arranged indoors of the transformer substation building (13), and a third temperature signal output end of the third temperature sensor (12) is connected with a third temperature signal input end of the controller (3); the controller (3) generates an adjusting signal according to the third temperature signal, and an adjusting signal output end of the controller (3) is connected with an adjusting signal input end of the throttle valve (8).
2. The system for regulating and controlling the temperature by utilizing the residual heat of the transformer as claimed in claim 1, wherein the oil outlet of the oil tank of the transformer (1) is arranged at the top end of the oil tank of the transformer (1), and the oil inlet of the oil tank of the transformer (1) is arranged at the bottom end of the oil tank of the transformer (1).
3. The temperature regulation system for supplying heat by using the residual heat of the transformer as claimed in claim 1, wherein the controller (3) comprises a radiator closing control circuit, a radiator opening control circuit and a throttle valve control circuit;
the radiator closing control circuit comprises a first threshold setting circuit (3-1) and a first temperature comparison circuit (3-2);
the first threshold setting circuit (3-1) is used for setting a first temperature threshold, and a first threshold voltage output end of the first threshold setting circuit (3-1) is connected with a first threshold voltage input end of the first temperature comparison circuit (3-2); a first temperature signal output end of the first temperature sensor (10) is connected with a first temperature signal input end of the first temperature comparison circuit (3-2); the first temperature comparison circuit (3-2) converts an input first temperature signal into a first acquisition voltage, compares the first acquisition voltage with an input first threshold voltage, and if the first acquisition voltage is smaller than the first threshold voltage, the first temperature comparison circuit (3-2) generates a closing signal, and the closing signal output by the first temperature comparison circuit (3-2) is used for closing the radiator (2);
the radiator opening control circuit comprises a second threshold setting circuit (3-3) and a second temperature comparison circuit (3-4);
the second threshold setting circuit (3-3) is used for setting a second temperature threshold, and a second threshold voltage output end of the second threshold setting circuit (3-3) is connected with a second threshold voltage input end of the second temperature comparison circuit (3-4); a second temperature signal output end of the second temperature sensor (11) is connected with a second temperature signal input end of the second temperature comparison circuit (3-4); the second temperature comparison circuit (3-4) converts the input second temperature signal into a second acquisition voltage, compares the second acquisition voltage with the input second threshold voltage, and if the second acquisition voltage is greater than the second threshold voltage, the second temperature comparison circuit (3-4) generates a starting signal, and the starting signal output by the second temperature comparison circuit (3-4) is used for starting the radiator (2);
the throttle valve control circuit comprises a third threshold value setting circuit (3-5), a fourth threshold value setting circuit (3-6), a third temperature comparison circuit (3-7) and a fourth temperature comparison circuit (3-8);
the third threshold setting circuit (3-5) is used for setting a third temperature threshold; the fourth threshold setting circuit (3-6) is used for setting a fourth temperature threshold; a third threshold voltage output end of the third threshold setting circuit (3-5) is connected with a third threshold voltage input end of the third temperature comparison circuit (3-7); a fourth threshold voltage output end of the fourth threshold setting circuit (3-6) is connected with a fourth threshold voltage input end of the fourth temperature comparison circuit (3-8); a third temperature signal output end of the third temperature sensor (12) is simultaneously connected with third temperature signal input ends of a third temperature comparison circuit (3-7) and a fourth temperature comparison circuit (3-8); the third temperature comparison circuit (3-7) converts the input third temperature signal into a third acquisition voltage, compares the third acquisition voltage with the input third threshold voltage, and if the third acquisition voltage is smaller than the third threshold voltage, the third temperature comparison circuit (3-7) generates a forward rotation signal; and a forward rotation signal of the third temperature comparison circuit (3-7) causes the throttle valve to rotate forward; the fourth temperature comparison circuit (3-8) converts the input third temperature signal into a third acquisition voltage, compares the third acquisition voltage with an input fourth threshold voltage, and if the third acquisition voltage is greater than the fourth threshold voltage, the fourth temperature comparison circuit (3-8) generates a reverse rotation signal; and a reverse rotation signal of the fourth temperature comparison circuit (3-8) causes the throttle valve to rotate in reverse.
4. The temperature control system for supplying heat by using residual heat of the transformer as claimed in claim 3, wherein the first threshold setting circuit (3-1) comprises a slide rheostat R1 and a resistor R2;
the first temperature sensor (10) comprises a resistor R3 and a resistor R4;
the first temperature comparison circuit (3-2) and the third temperature comparison circuit (3-7) are identical in circuit structure; the first temperature comparison circuit (3-2) comprises a first comparator T1, a capacitor C1, a resistor R5 and a resistor R6;
the fixed end of the slide rheostat R1 is connected with the positive output end of the power supply VSS, and the moving end of the slide rheostat R1 is simultaneously connected with one end of the resistor R2, one end of the resistor R5 and the non-inverting input end of the first comparator T1; the other end of the resistor R2 is grounded;
one end of the resistor R3 is grounded, and the other end of the resistor R3 is simultaneously connected with one end of the resistor R4, one end of the capacitor C1 and the inverted input end of the first comparator T1; the other end of the resistor R4 is connected with the anode output end of a 3.3V power supply; one end of the capacitor C1 is grounded;
the other end of the resistor R5 is connected with the anode of the diode D1;
the positive terminal of the first comparator T1 is connected with the positive output end of the power supply VCC and one end of the resistor R6 at the same time; the negative terminal of the first comparator T1 is grounded; the output end of the positive terminal of the first comparator T1 is simultaneously connected with the other end of the resistor R6 and the cathode of the diode D1, and the common end is the closing signal output end of the first temperature comparison circuit (3-2).
5. The temperature control system for supplying heat by using the residual heat of the transformer as claimed in claim 3, wherein the second temperature comparison circuit (3-4) and the fourth temperature comparison circuit (3-8) have the same circuit structure; and the second temperature comparison circuit (3-4) comprises a first comparator T2, a capacitor C2, a resistor R7 and a resistor R8;
one end of the resistor R7 is connected with the inverting input end of the second comparator T2, and the common end is a second threshold voltage input end of the second temperature comparison circuit (3-4);
one end of the capacitor C2 is connected with the non-inverting input end of the second comparator T2, and the common end is a second temperature signal input end of the second temperature comparison circuit (3-4); the other end of the capacitor C2 is grounded;
the other end of the resistor R7 is connected with the anode of the diode D2;
the positive terminal of the second comparator T2 is connected with the positive output end of the power supply VCC and one end of the resistor R8 at the same time; the negative terminal of the second comparator T2 is grounded; the output end of the positive terminal of the second comparator T2 is simultaneously connected with the other end of the resistor R8 and the cathode of the diode D2, and the common end is the starting signal output end of the second temperature comparison circuit (3-4).
6. The temperature regulation system for supplying heat by using transformer waste heat according to claim 1, wherein the first temperature sensor (10), the second temperature sensor (11) and the third temperature sensor (12) are all PT100 in type.
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| CN202211313641.3A CN115654770B (en) | 2022-10-25 | 2022-10-25 | Temperature regulation and control system for heating by utilizing waste heat of transformer |
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| CN202211313641.3A CN115654770B (en) | 2022-10-25 | 2022-10-25 | Temperature regulation and control system for heating by utilizing waste heat of transformer |
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| CN115654770B CN115654770B (en) | 2023-09-08 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2109719A1 (en) * | 1991-06-29 | 1993-01-07 | Jin Min Choi | Hot Water Boiler System |
| CN201706614U (en) * | 2010-01-29 | 2011-01-12 | 东南大学 | Air-conditioning system utilizing power consumptive heat of substation transformer |
| CN106196712A (en) * | 2016-07-31 | 2016-12-07 | 浙江大学 | A kind of compression utilizing transformator waste heat absorbs composite refrigeration system and method |
| CN212644744U (en) * | 2020-07-17 | 2021-03-02 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Device for heating by using waste heat of transformer |
| CN113252962A (en) * | 2021-05-13 | 2021-08-13 | 国网黑龙江省电力有限公司电力科学研究院 | Wireless detection device for current of insulation sample under direct-current high voltage of converter transformer |
| CN113963896A (en) * | 2021-10-14 | 2022-01-21 | 国网天津市电力公司 | Transformer waste heat utilization device and method based on heat pipe |
-
2022
- 2022-10-25 CN CN202211313641.3A patent/CN115654770B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2109719A1 (en) * | 1991-06-29 | 1993-01-07 | Jin Min Choi | Hot Water Boiler System |
| CN201706614U (en) * | 2010-01-29 | 2011-01-12 | 东南大学 | Air-conditioning system utilizing power consumptive heat of substation transformer |
| CN106196712A (en) * | 2016-07-31 | 2016-12-07 | 浙江大学 | A kind of compression utilizing transformator waste heat absorbs composite refrigeration system and method |
| CN212644744U (en) * | 2020-07-17 | 2021-03-02 | 中国大唐集团科学技术研究院有限公司西北电力试验研究院 | Device for heating by using waste heat of transformer |
| CN113252962A (en) * | 2021-05-13 | 2021-08-13 | 国网黑龙江省电力有限公司电力科学研究院 | Wireless detection device for current of insulation sample under direct-current high voltage of converter transformer |
| CN113963896A (en) * | 2021-10-14 | 2022-01-21 | 国网天津市电力公司 | Transformer waste heat utilization device and method based on heat pipe |
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| CN115654770B (en) | 2023-09-08 |
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