CN218782543U - Oil temperature control device of heat conduction oil boiler - Google Patents
Oil temperature control device of heat conduction oil boiler Download PDFInfo
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- CN218782543U CN218782543U CN202221941148.1U CN202221941148U CN218782543U CN 218782543 U CN218782543 U CN 218782543U CN 202221941148 U CN202221941148 U CN 202221941148U CN 218782543 U CN218782543 U CN 218782543U
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Abstract
The utility model discloses a conduction oil boiler oil temperature control device, including oil temperature detecting element and the control unit, oil temperature detecting element includes infrared temperature sensor, and infrared temperature sensor's detected signal sends into the control unit after filter regulating circuit and stable regulating circuit are handled in proper order, the utility model discloses utilize infrared temperature sensor to carry out direct measurement to the oil temperature, utilize the thermal radiation effect to realize the quick measurement to the oil temperature, the responsivity is high; the filter adjusting circuit utilizes the RC buffer circuit to perform input end stabilizing processing on the detection signal, avoids imbalance in the amplification of the detection signal by utilizing a phase compensation principle, and simultaneously adopts the operational amplifier AR2 to sample and amplify the output signal of the operational amplifier AR1, thereby avoiding the temperature drift influence in the amplification process of the detection signal and effectively improving the temperature detection precision; the utility model discloses the testing result is accurate effective, guarantees the steady operation of conduction oil boiler.
Description
Technical Field
The utility model relates to a boiler control technical field especially relates to a conduction oil boiler oil temperature control device.
Background
An organic heat carrier boiler, also called a heat conduction oil boiler, refers to a novel heat energy conversion device with heat conduction oil (also called heat medium and heat carrier) as a heat conduction working medium, and has the working characteristics of low pressure and high temperature. The existing heat conduction oil boiler adopts double-loop control of oil supply temperature and heat, so that the biomass boiler with larger delay and inertia can adapt to the requirement of load change by the change of fuel quantity, and the stable oil supply temperature is achieved. In the oil temperature acquisition process, the response of the received sensor probe to the variation of the temperature signal has hysteresis, and external interference factors can also cause the fluctuation of the acquired signal, so that the oil temperature detection has errors, and the oil temperature control device of the heat conduction oil boiler can not meet the requirement of industrial production stability.
So the utility model provides a new scheme to solve the problem.
SUMMERY OF THE UTILITY MODEL
To the above situation, in order to overcome the defects of the prior art, an object of the present invention is to provide a temperature control device for oil in a heat-conducting oil boiler.
The technical scheme for solving the problem is as follows: the utility model provides a conduction oil boiler oil temperature controlling means, includes oil temperature detecting element and the control unit, oil temperature detecting element includes infrared temperature sensor, infrared temperature sensor's detected signal sends into after filter regulating circuit and stable regulating circuit handle in proper order among the control unit, the control unit is including the frequency control ware that is used for adjusting the oil temperature.
Further, the filter adjusting circuit comprises an operational amplifier AR1, an inverting input end of the operational amplifier AR1 is connected with one end of a resistor R1 and a signal output end of the infrared temperature sensor through a resistor R2 and a capacitor C1 which are connected in parallel, the output end of the operational amplifier AR1 is connected with an output end of the operational amplifier AR1 through a resistor R3 and a capacitor C3 which are connected in parallel, the other end of the resistor R1 is grounded, an in-phase input end of the operational amplifier AR1 is grounded through a resistor R4, an output end of the operational amplifier AR1 is connected with an in-phase input end of the operational amplifier AR2 through a resistor R5, the inverting input end of the operational amplifier AR2 is connected with a cathode of a voltage stabilizing diode DZ1 and a drain electrode of an MOS tube Q1, an anode of the voltage stabilizing diode DZ1 is grounded, an output end of the operational amplifier AR2 is connected with a grid of the MOS tube Q1 and is grounded through a capacitor C4, and a source electrode of the MOS tube Q1 is connected with the inverting input end of the operational amplifier AR1 through an inductor L1 and the capacitor C2 which are connected in parallel.
Further, the stabilizing and regulating circuit comprises a triode VT1, an emitter of the triode VT1 is connected with an output end of the operational amplifier AR1 through a rheostat RP1 and is connected with a base of the triode VT1 and a cathode of the zener diode DZ1 through a resistor R6, an anode of the zener diode DZ2 is grounded, and a collector of the triode VT1 is connected with an oil temperature detection signal input end of the control unit and is grounded through a capacitor C5.
Through the technical scheme, the beneficial effects of the utility model are that:
1. the utility model utilizes the infrared temperature sensor to directly measure the oil temperature, utilizes the thermal radiation effect to realize the rapid measurement of the oil temperature, and has high responsiveness;
2. filter regulating circuit utilizes RC buffer circuit to carry out input stable processing to detected signal, utilizes the phase compensation principle to avoid detected signal to enlarge and appear the imbalance, adopts fortune to put output signal that ware AR1 was put to fortune that ware AR2 was put to the while and samples and enlargies, avoids the temperature drift influence of detected signal amplification in-process, effectively promotes the temperature and detects the precision.
Drawings
Fig. 1 is a schematic diagram of the filter adjusting circuit of the present invention.
Fig. 2 is a schematic diagram of the stabilization regulating circuit of the present invention.
Detailed Description
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which proceeds with reference to the accompanying drawings in which fig. 1 through 2 are shown. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
The utility model provides a conduction oil boiler oil temperature controlling means, includes oil temperature detecting element and the control unit, and oil temperature detecting element includes infrared temperature sensor, infrared temperature sensor's detected signal sends into after filter regulating circuit and stable regulating circuit handle in proper order among the control unit, the control unit is including the frequency control ware that is used for adjusting the oil temperature.
As shown in fig. 1, the filter adjusting circuit includes an operational amplifier AR1, an inverting input terminal of the operational amplifier AR1 is connected to one end of a resistor R1 and a signal output terminal of the infrared temperature sensor through a resistor R2 and a capacitor C1 which are connected in parallel, and is connected to an output terminal of the operational amplifier AR1 through a resistor R3 and a capacitor C3 which are connected in parallel, the other end of the resistor R1 is grounded, a non-inverting input terminal of the operational amplifier AR1 is grounded through a resistor R4, an output terminal of the operational amplifier AR1 is connected to a non-inverting input terminal of the operational amplifier AR2 through a resistor R5, a non-inverting input terminal of the operational amplifier AR2 is connected to a cathode of a zener diode DZ1 and a drain of a MOS transistor Q1, an anode of the zener diode DZ1 is grounded, an output terminal of the operational amplifier AR2 is connected to a gate of the MOS transistor Q1 and is grounded through a capacitor C4, and a source of the MOS transistor Q1 is connected to the inverting input terminal of the operational amplifier AR1 through an inductor L1 and a capacitor C2 which are connected in parallel.
As shown in fig. 2, the stability adjusting circuit includes a transistor VT1, an emitter of the transistor VT1 is connected to an output terminal of the operational amplifier AR1 through a varistor RP1, and is connected to a base of the transistor VT1 and a cathode of the zener diode DZ1 through a resistor R6, an anode of the zener diode DZ2 is grounded, and a collector of the transistor VT1 is connected to an oil temperature detection signal input terminal of the control unit and is grounded through a capacitor C5.
The utility model discloses when specifically using, infrared temperature sensor carries out the direct measurement to the oil temperature, utilizes the thermal radiation effect to realize the rapid survey to the oil temperature, and the responsiveness is high. In order to ensure the accuracy of infrared temperature detection, firstly, a filter regulating circuit is adopted to process an infrared temperature detection signal, wherein a resistor R2 and a capacitor C1 form an RC buffer circuit to carry out input end stabilizing processing on the detection signal, then the detection signal is sent into an operational amplifier AR1 to be amplified, and a capacitor C3 plays a role in phase compensation at a negative feedback end of the operational amplifier AR1, so that the detection signal is prevented from being amplified to generate imbalance. Meanwhile, the operational amplifier AR2 samples and amplifies the output signal of the operational amplifier AR1, the voltage stabilizing diode DZ1 forms a reference voltage at the inverting input end of the operational amplifier AR2, and the MOS tube Q1 is added at the output end of the operational amplifier AR2 to form follow-up amplification, so that the amplified output waveform of the sampling signal is improved. The output signal of MOS pipe Q1 sends into the inverting input end of fortune ware AR1 after the LC parallel resonance filtering that inductance L1 and electric capacity C2 formed to offset fortune and put the offset voltage, avoid the temperature drift influence of detection signal amplification in-process, effectively promote the temperature detection precision. The stabilization regulating circuit performs voltage stabilization processing on the output signal of the filtering regulating circuit by using the principle of the triode voltage stabilizer, and then the output signal is subjected to low-pass noise reduction by a capacitor C5 and then is sent into the control unit.
And after the MCU in the control unit analyzes and processes the detection signals, the real-time oil temperature is calculated, and the oil temperature is adjusted in real time through the frequency adjuster, so that the oil temperature detection value is always in a system set requirement range. The utility model discloses temperature detection response speed is fast, and the testing result is accurate effective, guarantees the steady operation of conduction oil boiler.
The above description is provided for further details of the present invention with reference to the specific embodiments, which should not be construed as limiting the present invention; to the utility model discloses affiliated and relevant technical field's technical personnel are based on the utility model discloses under the technical scheme thinking prerequisite, the extension of doing and the replacement of operating method, data all should fall within the utility model discloses within the protection scope.
Claims (3)
1. The utility model provides a conduction oil boiler oil temperature controlling means, includes oil temperature detecting element and the control unit, its characterized in that: the oil temperature detection unit comprises an infrared temperature sensor, detection signals of the infrared temperature sensor are sent into the control unit after being processed by the filtering adjusting circuit and the stabilizing adjusting circuit in sequence, and the control unit comprises a frequency regulator for regulating the oil temperature.
2. The oil temperature control device of the conduction oil boiler according to claim 1, characterized in that: the filter adjusting circuit comprises an operational amplifier AR1, wherein the inverting input end of the operational amplifier AR1 is connected with one end of a resistor R1 and a signal output end of the infrared temperature sensor through a resistor R2 and a capacitor C1 which are connected in parallel, the output end of the operational amplifier AR1 is connected with the other end of the resistor R1 through a resistor R3 and a capacitor C3 which are connected in parallel, the non-inverting input end of the operational amplifier AR1 is grounded through a resistor R4, the output end of the operational amplifier AR1 is connected with the non-inverting input end of the operational amplifier AR2 through a resistor R5, the inverting input end of the operational amplifier AR2 is connected with the cathode of a voltage stabilizing diode DZ1 and the drain electrode of an MOS (metal oxide semiconductor) tube Q1, the anode of the voltage stabilizing diode DZ1 is grounded, the output end of the operational amplifier AR2 is connected with the grid of the MOS tube Q1 and is grounded through a capacitor C4, and the source electrode of the MOS tube Q1 is connected with the inverting input end of the operational amplifier AR1 through an inductor L1 and the capacitor C2 which are connected in parallel.
3. The oil temperature control device for the conduction oil boiler according to claim 2, wherein: the stability adjusting circuit comprises a triode VT1, wherein an emitting electrode of the triode VT1 is connected with an output end of the operational amplifier AR1 through a rheostat RP1 and is connected with a base electrode of the triode VT1 and a cathode of a voltage stabilizing diode DZ1 through a resistor R6, an anode of the voltage stabilizing diode DZ2 is grounded, and a collector electrode of the triode VT1 is connected with an oil temperature detection signal input end of the control unit and is grounded through a capacitor C5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221941148.1U CN218782543U (en) | 2022-07-26 | 2022-07-26 | Oil temperature control device of heat conduction oil boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221941148.1U CN218782543U (en) | 2022-07-26 | 2022-07-26 | Oil temperature control device of heat conduction oil boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218782543U true CN218782543U (en) | 2023-03-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221941148.1U Active CN218782543U (en) | 2022-07-26 | 2022-07-26 | Oil temperature control device of heat conduction oil boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218782543U (en) |
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2022
- 2022-07-26 CN CN202221941148.1U patent/CN218782543U/en active Active
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