CN219347385U - Electric control early warning device of aluminum bar heating furnace - Google Patents
Electric control early warning device of aluminum bar heating furnace Download PDFInfo
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- CN219347385U CN219347385U CN202320528999.1U CN202320528999U CN219347385U CN 219347385 U CN219347385 U CN 219347385U CN 202320528999 U CN202320528999 U CN 202320528999U CN 219347385 U CN219347385 U CN 219347385U
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- temperature sensor
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 34
- 238000010438 heat treatment Methods 0.000 title claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 47
- 230000009467 reduction Effects 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 9
- 230000008569 process Effects 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims abstract description 5
- 239000003990 capacitor Substances 0.000 claims description 16
- 239000004411 aluminium Substances 0.000 claims 2
- 230000005611 electricity Effects 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 230000004044 response Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
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- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model discloses an electric control early warning device of an aluminum bar heating furnace, which comprises a temperature sensor arranged in an inner cavity of an aluminum bar heating chamber, wherein the temperature sensor is electrically connected with an electric control early warning module, the electric control early warning module comprises a detection signal amplifying assembly, an analog-to-digital converter, a controller and an alarm, the detection signal amplifying assembly is used for carrying out amplitude enhancement processing on detection signals of the temperature sensor, and a noise reduction adjusting unit is added in the enhancement process to condition the detection signals; according to the utility model, the temperature of the inner cavity of the aluminum bar heating chamber is measured by selecting the infrared temperature measuring sensor, so that the rapid reaction change can be realized when the temperature of the aluminum bar heating chamber fluctuates, and the problem of high stagnation of temperature detection signals is effectively solved; the detection signal amplifying assembly is used for processing detection signals, so that temperature detection data are more accurate and effective, temperature control precision is obviously improved, and early warning effect is more reliable.
Description
Technical Field
The utility model relates to the technical field of aluminum bar heating equipment, in particular to an electric control early warning device of an aluminum bar heating furnace.
Background
In the aluminum profile production process, aluminum bars must be preheated by a heating furnace before entering an extruder for extrusion molding into aluminum profiles, the quality of temperature control in the heating furnace has a great relationship with aluminum profile molding, and currently, the aluminum bar heating furnace appearing in the market mainly heats air in a hearth by a burner, heats a plurality of aluminum bars side by hot air, and detects the temperature in the aluminum bar preheating chamber by a temperature sensor; in order to avoid dangerous situations such as explosion of the heating furnace caused by overhigh temperature in the aluminum bar preheating chamber, the utility model patent with the application number of 201420870890.7 discloses an aluminum bar heating furnace early warning component, wherein a temperature sensor is used for monitoring the temperature in the furnace, and abnormality is fed back to a temperature alarm, so that potential safety hazards are reduced. However, in the process of monitoring the furnace temperature, the temperature fluctuation in the preheating chamber is large, and the thermocouple sensor is easy to be interfered by environmental factors due to high time lag, so that the sensed temperature in the furnace is greatly different from the actual temperature, and a certain potential safety hazard exists.
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 an electric control early warning device of an aluminum rod heating furnace.
The technical scheme for solving the problems is as follows: the electric control early warning device comprises a temperature sensor arranged in an inner cavity of an aluminum bar heating chamber, wherein the temperature sensor is electrically connected with an electric control early warning module, the electric control early warning module comprises a detection signal amplifying assembly, an analog-to-digital converter, a controller and an alarm, the detection signal amplifying assembly is used for carrying out amplitude enhancement processing on detection signals of the temperature sensor, and a noise reduction adjusting unit is added in an enhancement process to condition the detection signals; the analog-to-digital converter is used for carrying out A/D conversion on the output signal of the detection signal amplifying component and sending the converted data signal to the controller, and the controller is used for controlling the alarm to work.
Further, the detection signal amplifying assembly comprises an operational amplifier AR1, the in-phase input end of the operational amplifier AR1 is connected with the emitter of a triode VT1 through a resistor R2, the collector of the triode VT1 is connected with the signal output end of the temperature sensor through a resistor R1 and is grounded through a capacitor C1, the inverting input end of the operational amplifier AR1 is connected with one end of a resistor R4 and one end of a capacitor C2, the output end of the operational amplifier AR1 is connected with the other end of the capacitor C2 and is connected with one end of a resistor R4 and one end of an R5 through a rheostat RP1 and the input end of an analog-to-digital converter, the other end of the resistor R4 is connected with the inverting input end of the operational amplifier AR1, the other end of the resistor R5 is grounded, and the noise reduction adjusting unit is arranged between the input end of the analog-to-digital converter and the base of the triode VT 1.
Further, the noise reduction adjusting unit includes an operational amplifier AR2, where an inverting input end of the operational amplifier AR2 is connected to an input end of the analog-to-digital converter through a parallel inductor L1 and a capacitor C3, and is grounded through a resistor R6, and an non-inverting input end of the operational amplifier AR2 is grounded, and an output end of the operational amplifier AR2 is connected to a base electrode of a triode VT1 through a resistor R3 and is grounded through a capacitor C4.
Furthermore, the temperature sensor is an infrared temperature sensor.
Through the technical scheme, the utility model has the beneficial effects that:
1. according to the utility model, the temperature of the inner cavity of the aluminum bar heating chamber is measured by selecting the infrared temperature measuring sensor, so that the temperature measuring device has good response speed, can quickly react and change when the temperature of the aluminum bar heating chamber fluctuates, and effectively solves the problem of high stagnation when the temperature detection signal is generated;
2. in order to further avoid the influence of external environment factors on temperature detection, detection signals are processed by adopting a detection signal amplifying assembly, so that temperature detection data are more accurate and effective, temperature control precision is also obviously improved, when the temperature in the aluminum bar preheating chamber is too high and dangerous, the controller immediately controls the alarm to work, and the working personnel is reminded to overhaul, so that the early warning effect is more reliable.
Drawings
Fig. 1 is a block diagram of a system control module of the present utility model.
Fig. 2 is a schematic circuit diagram of the detection signal amplifying assembly 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 figures 1-2. 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.
As shown in fig. 1, the electric control early warning device of the aluminum bar heating furnace comprises a temperature sensor arranged in an inner cavity of an aluminum bar heating chamber, wherein the temperature sensor is electrically connected with an electric control early warning module, the electric control early warning module comprises a detection signal amplifying assembly, an analog-to-digital converter, a controller and an alarm, the detection signal amplifying assembly is used for carrying out amplitude enhancement processing on detection signals of the temperature sensor, and a noise reduction adjusting unit is added in an enhancement process to condition the detection signals; the analog-to-digital converter is used for carrying out A/D conversion on the output signal of the detection signal amplifying component and sending the converted data signal to the controller, and the controller is used for controlling the alarm to work.
As shown in fig. 2, the detection signal amplifying assembly includes an operational amplifier AR1, the in-phase input end of the operational amplifier AR1 is connected to the emitter of a triode VT1 through a resistor R2, the collector of the triode VT1 is connected to the signal output end of the temperature sensor through a resistor R1 and is grounded through a capacitor C1, the inverting input end of the operational amplifier AR1 is connected to a resistor R4 and one end of the capacitor C2, the output end of the operational amplifier AR1 is connected to the other end of the capacitor C2 and is connected to one end of resistors R4 and R5 through a varistor RP1 and the input end of the analog-to-digital converter, the other end of the resistor R4 is connected to the inverting input end of the operational amplifier AR1, the other end of the resistor R5 is grounded, and the noise reduction adjusting unit is disposed between the input end of the analog-to-digital converter and the base of the triode VT 1.
The noise reduction adjusting unit comprises an operational amplifier AR2, wherein an inverting input end of the operational amplifier AR2 is connected with an input end of the analog-to-digital converter through a parallel inductor L1 and a capacitor C3, and is grounded through a resistor R6, a non-inverting input end of the operational amplifier AR2 is grounded, and an output end of the operational amplifier AR2 is connected with a base electrode of a triode VT1 through the resistor R3 and is grounded through a capacitor C4.
When the aluminum bar heating chamber temperature sensor is particularly used, the temperature sensor is an infrared temperature sensor, the temperature of the inner cavity of the aluminum bar heating chamber is measured by utilizing the infrared temperature measurement principle, the response speed is high, and the rapid response change can be realized when the temperature of the aluminum bar heating chamber fluctuates; in order to further avoid the influence of external environmental factors on temperature detection, a detection signal amplifying assembly is adopted to process detection signals, and the specific principle is as follows: the detection signal amplifying assembly firstly carries out preliminary noise reduction on the detection signal of the temperature sensor by adopting RC filtering, and then sends the detection signal into the operational amplifier AR1 to be amplified in phase by the triode VT1, wherein the triode VT1 plays a role of a regulating tube, the operational amplifier AR1 adds resistance-capacitance feedback compensation in the amplifying process, the amplifying precision of the temperature detection signal can be well improved by utilizing the closed loop feedback regulating principle, and the system error is eliminated;
meanwhile, in order to reduce external clutter interference, a noise reduction adjusting unit is added in the signal amplifying process, wherein an RLC notch network is formed by an inductor L1, a capacitor C3 and a resistor R6 and is used for filtering harmful noise in an amplified detection signal, the harmful noise is then sent into an operational amplifier AR2 for inverse amplification, and the amplified signal is fed back to a base electrode of a triode VT1, so that a base electrode conduction signal of the triode VT1 is improved, the triode VT1 has good noise reduction adjusting function on a temperature detection signal, and the invasion of an interference quantity is prevented from affecting the temperature detection precision;
the analog-to-digital converter is used for carrying out A/D conversion on the output signal of the detection signal amplifying assembly, and the converted digital quantity signal is sent into the controller for operation treatment, so that real-time temperature data of the inner cavity of the aluminum bar heating chamber are obtained; because the conditioning effect of the detection signal amplifying assembly on the temperature detection signal can well solve the problems of high stagnation and external interference influence when the temperature detection signal is generated, the temperature detection data are more accurate and effective, the temperature control precision is also obviously improved, and when the temperature in the aluminum bar preheating chamber is too high and dangerous, the controller immediately controls the alarm to work to remind workers to overhaul.
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 an automatically controlled early warning device of aluminium bar heating furnace, includes the temperature sensor who sets up in aluminium bar heating chamber inner chamber, temperature sensor and automatically controlled early warning module electricity federation, its characterized in that: the electric control early warning module comprises a detection signal amplifying assembly, an analog-to-digital converter, a controller and an alarm, wherein the detection signal amplifying assembly is used for carrying out amplitude enhancement processing on detection signals of the temperature sensor, and a noise reduction adjusting unit is added in the enhancement process to condition the detection signals; the analog-to-digital converter is used for carrying out A/D conversion on the output signal of the detection signal amplifying component and sending the converted data signal to the controller, and the controller is used for controlling the alarm to work.
2. The electric control early warning device of the aluminum bar heating furnace according to claim 1, wherein: the detection signal amplifying assembly comprises an operational amplifier AR1, wherein the in-phase input end of the operational amplifier AR1 is connected with the emitter of a triode VT1 through a resistor R2, the collector of the triode VT1 is connected with the signal output end of the temperature sensor through a resistor R1 and is grounded through a capacitor C1, the inverting input end of the operational amplifier AR1 is connected with a resistor R4 and one end of the capacitor C2, the output end of the operational amplifier AR1 is connected with the other end of the capacitor C2 and is connected with one end of the resistors R4 and R5 through a rheostat RP1 and the input end of the analog-to-digital converter, the other end of the resistor R4 is connected with the inverting input end of the operational amplifier AR1, the other end of the resistor R5 is grounded, and the noise reduction adjusting unit is arranged between the input end of the analog-to-digital converter and the base of the triode VT 1.
3. The electric control early warning device of the aluminum bar heating furnace according to claim 2, wherein: the noise reduction adjusting unit comprises an operational amplifier AR2, wherein an inverting input end of the operational amplifier AR2 is connected with an input end of the analog-to-digital converter through a parallel inductor L1 and a capacitor C3, and is grounded through a resistor R6, a non-inverting input end of the operational amplifier AR2 is grounded, and an output end of the operational amplifier AR2 is connected with a base electrode of a triode VT1 through a resistor R3 and is grounded through a capacitor C4.
4. The electric control early warning device of the aluminum bar heating furnace according to claim 3, wherein: the temperature sensor is an infrared temperature sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320528999.1U CN219347385U (en) | 2023-03-17 | 2023-03-17 | Electric control early warning device of aluminum bar heating furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320528999.1U CN219347385U (en) | 2023-03-17 | 2023-03-17 | Electric control early warning device of aluminum bar heating furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219347385U true CN219347385U (en) | 2023-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320528999.1U Active CN219347385U (en) | 2023-03-17 | 2023-03-17 | Electric control early warning device of aluminum bar heating furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219347385U (en) |
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2023
- 2023-03-17 CN CN202320528999.1U patent/CN219347385U/en active Active
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