CN220290109U - Tunnel kiln temperature acquisition control device - Google Patents
Tunnel kiln temperature acquisition control device Download PDFInfo
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- CN220290109U CN220290109U CN202322185941.4U CN202322185941U CN220290109U CN 220290109 U CN220290109 U CN 220290109U CN 202322185941 U CN202322185941 U CN 202322185941U CN 220290109 U CN220290109 U CN 220290109U
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- 238000001514 detection method Methods 0.000 claims abstract description 22
- 239000003990 capacitor Substances 0.000 claims description 25
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 16
- 230000003321 amplification Effects 0.000 abstract description 15
- 238000003199 nucleic acid amplification method Methods 0.000 abstract description 15
- 239000000919 ceramic Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 5
- 238000001914 filtration Methods 0.000 abstract description 3
- 230000001276 controlling effect Effects 0.000 description 6
- 238000010304 firing Methods 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 210000001161 mammalian embryo Anatomy 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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- Control Of Temperature (AREA)
Abstract
The utility model discloses a tunnel kiln temperature acquisition control device, which comprises a temperature acquisition device, a fan frequency converter and a controller, wherein the temperature acquisition device comprises a thermocouple sensor for acquiring the temperature in a tunnel kiln, detection signals of the thermocouple sensor are sequentially processed by a bias amplifying and adjusting circuit and a phase adjusting filter circuit and then are sent into the controller, and the controller is connected with the fan frequency converter through a data serial port; according to the utility model, the bias amplification adjusting circuit and the phase adjustment filtering circuit are arranged to condition the temperature detection signal, so that the phenomenon of imbalance in the signal amplification processing process is effectively avoided, the stability and the accuracy of the temperature detection signal are greatly improved, the accurate and effective control process of the tunnel kiln temperature control system is ensured, and the roasting quality of the ceramic filter material is improved.
Description
Technical Field
The utility model relates to the technical field of tunnel kiln temperature control, in particular to a tunnel kiln temperature acquisition control device.
Background
The production process of the environment-friendly ceramic filter material comprises five steps of preparing raw material filter pressing sludge, stirring and proportioning, mixing the filter pressing sludge and clay, mechanically granulating, firing ceramic, cooling and sieving. In the process of firing ceramic, the ceramsite embryo is required to be sent into a tunnel kiln for preheating and drying, gradual heating is adopted for preheating and drying, the dried particle embryo is transferred into a high-temperature zone of the tunnel kiln, gradual heating is adopted, the operating frequency of a fan is correspondingly changed by controlling a fan frequency converter, and then the firing temperature in the tunnel kiln is regulated by controlling the air draft amount in the tunnel kiln, so that the whole firing process is automatically performed for temperature regulation and firing according to the set standard temperature. However, as the detection signal of the temperature sensor is easy to be out of control in the amplification treatment process, and the output of the temperature detection signal is unstable when the air pumping quantity of the fan is unstable, deviation is easy to occur in the temperature detection process, so that the precision of the tunnel kiln temperature control system cannot be ensured, and the roasting effect of the ceramic filter material is affected.
The present utility model provides a new solution to this problem.
Disclosure of Invention
Aiming at the situation, the utility model aims to overcome the defects of the prior art and provide a tunnel kiln temperature acquisition control device.
The technical scheme for solving the problems is as follows: the utility model provides a tunnel cave temperature acquisition controlling means, includes temperature collector, fan converter and controller, temperature collector is including the thermocouple sensor that is used for gathering the interior temperature of tunnel cave, thermocouple sensor's detected signal is sent into after offset amplification regulating circuit and phase place regulation filter circuit handle in proper order in the controller, the controller passes through the data serial ports connection the fan converter.
Preferably, the bias amplifying and adjusting circuit includes a resistor R1, one end of the resistor R1 is connected to the signal output end of the thermocouple sensor, the other end of the resistor R1 is connected to a resistor R2, one end of a capacitor C1 and an inverting input end of an operational amplifier AR1, the other end of the resistor R2 is connected to a +3.3v power supply, the other end of the capacitor C1 is grounded, the non-inverting input end of the operational amplifier AR1 is connected to the output end of the operational amplifier AR1 and one end of the capacitor C3 through a resistor R3 and is grounded through a resistor R4, the other end of the capacitor C3 is connected to a base electrode of a triode VT1, a collector electrode of the triode VT1 is connected to the inverting input end of the operational amplifier AR1 and one end of the capacitor C2 through a resistor R5, and the other end of the capacitor C2 is grounded.
Preferably, the phase adjusting filter circuit includes an operational amplifier AR2, an inverting input end of the operational amplifier AR2 is connected with an output end of the operational amplifier AR2, a cathode of a zener diode DZ1, a resistor R6 and one end of an inductor L1 through a parallel resistor R7, an anode of the zener diode DZ1 is grounded, the other end of the resistor R6 is connected with an emitter of a triode VT1, and the other end of the inductor L1 is connected with the controller and grounded through a capacitor C5.
Preferably, the controller is a PLC control module.
Through the technical scheme, the utility model has the beneficial effects that: according to the utility model, the bias amplification adjusting circuit and the phase adjustment filtering circuit are arranged to condition the temperature detection signal, so that the phenomenon of imbalance in the signal amplification processing process is effectively avoided, the stability and the accuracy of the temperature detection signal are greatly improved, the accurate and effective control process of the tunnel kiln temperature control system is ensured, and the roasting quality of the ceramic filter material is improved.
Drawings
Fig. 1 is a schematic circuit diagram of the present utility model.
Detailed Description
The foregoing and other features, aspects and advantages of the present utility model will become more apparent from the following detailed description of the embodiments, which proceeds with reference to the accompanying fig. 1. The following embodiments are described in detail with reference to the drawings.
Exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings.
The utility model provides a tunnel cave temperature acquisition controlling means, includes temperature collector, fan converter and controller, and temperature collector is including the thermocouple sensor that is used for gathering the interior temperature of tunnel cave, thermocouple sensor's detected signal is sent into after offset amplification regulating circuit and phase place regulation filter circuit handle in proper order in the controller, the controller passes through data serial ports connection the fan converter.
As shown in fig. 1, the bias amplifying and adjusting circuit includes a resistor R1, one end of the resistor R1 is connected to the signal output end of the thermocouple sensor, the other end of the resistor R1 is connected to a resistor R2, one end of a capacitor C1 and an inverting input end of an operational amplifier AR1, the other end of the resistor R2 is connected to a +3.3v power supply, the other end of the capacitor C1 is grounded, the non-inverting input end of the operational amplifier AR1 is connected to the output end of the operational amplifier AR1 and one end of the capacitor C3 through a resistor R3 and grounded through a resistor R4, the other end of the capacitor C3 is connected to a base of a triode VT1, a collector of the triode VT1 is connected to the inverting input end of the operational amplifier AR1 and one end of the capacitor C2 through a resistor R5, and the other end of the capacitor C2 is grounded.
In the working process of the bias amplification regulating circuit, a +3.3V power supply is utilized to apply bias current to a detection signal of a thermocouple sensor through a resistor R2, the linearity of the detection signal in the amplification process is ensured by utilizing current bias, the static working point of an operational amplifier AR1 is improved, the amplification precision of a temperature detection signal is improved, meanwhile, a filter network formed by a capacitor C2 and a capacitor C3 is added in the amplification process of the operational amplifier AR1, and a triode VT1 is used as a following amplifier for driving, so that the amplification efficiency is improved, external high-frequency clutter is filtered, and the accuracy of temperature detection signal processing is ensured;
the phase adjusting filter circuit carries out secondary amplification treatment on an output signal of the operational amplifier AR1, the phase adjusting filter circuit comprises an operational amplifier AR2, an inverting input end of the operational amplifier AR2 is connected with an output end of the operational amplifier AR2, a cathode of a voltage stabilizing diode DZ1, a resistor R6 and one end of an inductor L1 through a resistor R7 connected in parallel, an anode of the voltage stabilizing diode DZ1 is grounded, the other end of the resistor R6 is connected with an emitter of a triode VT1, and the other end of the inductor L1 is connected with the controller and is grounded through a capacitor C5. The operational amplifier AR2 serves as a secondary operational amplifier tube to amplify the detection signal, the resistor R7 and the capacitor C4 form resistance-capacitance feedback compensation in the amplifying process, the detection signal output waveform is improved well by utilizing the phase compensation principle, and therefore the problem of unstable temperature detection signal output is solved well; then, the output signal of the operational amplifier AR2 is subjected to amplitude stabilization treatment through a voltage stabilizing diode DZ1, so that the stability of the output of the temperature detection signal is further improved; finally, the detection signal is further and accurately filtered by an LC filter formed by the inductor L1 and the capacitor C5 and then is sent into the controller, and when the device is specifically set, the controller selects a PLC control module, the PLC control module is used for converting, analyzing and processing the detection signal, then calculating the real-time temperature in the tunnel kiln, controlling the parameter setting of the fan frequency converter according to the temperature detection value, and then controlling the air draft quantity of the fan to adjust the roasting temperature in the tunnel kiln, so that the ceramic firing process is always in the optimal temperature environment.
In summary, the offset amplification adjusting circuit and the phase adjustment filtering circuit are arranged to condition the temperature detection signals, so that the phenomenon of imbalance in the signal amplification processing process is effectively avoided, the stability and the accuracy of the temperature detection signals are greatly improved, the accuracy and the effectiveness of the control process of the tunnel kiln temperature control system are ensured, and the roasting quality of the ceramic filter materials is improved.
While the utility model has been described in connection with certain embodiments, it is not intended that the utility model be limited thereto; for those skilled in the art to which the present utility model pertains and the related art, on the premise of based on the technical scheme of the present utility model, the expansion, the operation method and the data replacement should all fall within the protection scope of the present utility model.
Claims (4)
1. The utility model provides a tunnel cave temperature acquisition controlling means, includes temperature acquisition ware, fan converter and controller, its characterized in that: the temperature collector comprises a thermocouple sensor for collecting the temperature in the tunnel kiln, detection signals of the thermocouple sensor are sequentially processed by the bias amplifying and adjusting circuit and the phase adjusting filter circuit and then are sent into the controller, and the controller is connected with the fan frequency converter through a data serial port.
2. The tunnel kiln temperature acquisition control device according to claim 1, wherein: the bias amplifying and adjusting circuit comprises a resistor R1, one end of the resistor R1 is connected with a signal output end of the thermocouple sensor, the other end of the resistor R1 is connected with a resistor R2, one end of a capacitor C1 and an inverting input end of an operational amplifier AR1, the other end of the resistor R2 is connected with a +3.3V power supply, the other end of the capacitor C1 is grounded, the non-inverting input end of the operational amplifier AR1 is connected with the output end of the operational amplifier AR1 and one end of the capacitor C3 through a resistor R3 and is grounded through a resistor R4, the other end of the capacitor C3 is connected with a base electrode of a triode VT1, a collector electrode of the triode VT1 is connected with the inverting input end of the operational amplifier AR1 and one end of the capacitor C2 through a resistor R5, and the other end of the capacitor C2 is grounded.
3. The tunnel kiln temperature acquisition control device according to claim 2, wherein: the phase adjusting filter circuit comprises an operational amplifier AR2, wherein an inverting input end of the operational amplifier AR2 is connected with an output end of the operational amplifier AR2, a cathode of a voltage stabilizing diode DZ1, a resistor R6 and one end of an inductor L1 through a resistor R7 connected in parallel, an anode of the voltage stabilizing diode DZ1 is grounded, the other end of the resistor R6 is connected with an emitter of a triode VT1, and the other end of the inductor L1 is connected with the controller and grounded through a capacitor C5.
4. A tunnel kiln temperature acquisition control device according to any one of claims 1 to 3, characterized in that: the controller selects a PLC control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322185941.4U CN220290109U (en) | 2023-08-14 | 2023-08-14 | Tunnel kiln temperature acquisition control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322185941.4U CN220290109U (en) | 2023-08-14 | 2023-08-14 | Tunnel kiln temperature acquisition control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220290109U true CN220290109U (en) | 2024-01-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322185941.4U Active CN220290109U (en) | 2023-08-14 | 2023-08-14 | Tunnel kiln temperature acquisition control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220290109U (en) |
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2023
- 2023-08-14 CN CN202322185941.4U patent/CN220290109U/en active Active
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