CN210065642U - Coal charging amount monitoring device for tamping coke oven - Google Patents

Coal charging amount monitoring device for tamping coke oven Download PDF

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Publication number
CN210065642U
CN210065642U CN201920713621.2U CN201920713621U CN210065642U CN 210065642 U CN210065642 U CN 210065642U CN 201920713621 U CN201920713621 U CN 201920713621U CN 210065642 U CN210065642 U CN 210065642U
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circuit
coke oven
coal
tamping coke
monitoring device
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贾亮
叶建峰
崔玉龙
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Shanxi Haoye Heavy Machinery Co Ltd
Shanxi Xinhaoye Heavy Machinery Co Ltd
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Shanxi Haoye Heavy Machinery Co Ltd
Shanxi Xinhaoye Heavy Machinery Co Ltd
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Abstract

本实用新型涉及一种捣固焦炉装煤量监控装置,属于捣固焦炉技术领域,具体包括固定在托煤板上方的测量支架,所述测量支架上固定有多个测量探头,所述测量探头沿煤饼长度方向布置,所述测量探头与信号检测处理单元相连接,所述信号检测处理单元与捣固焦炉主控系统相连接,本实用新型结构简单,使用方便,能够实时检测煤饼长度,自动报警。

Figure 201920713621

The utility model relates to a monitoring device for the amount of coal charged in a tamping coke oven, which belongs to the technical field of tamping coke ovens, and specifically comprises a measuring bracket fixed above a coal supporting plate, and a plurality of measuring probes are fixed on the measuring bracket. The measuring probe is arranged along the length direction of the briquettes, and the measuring probe is connected with the signal detection and processing unit, and the signal detection and processing unit is connected with the main control system of the tamping coke oven. The utility model has a simple structure, is convenient to use, and can detect in real time. Briquette length, automatic alarm.

Figure 201920713621

Description

一种捣固焦炉装煤量监控装置A monitoring device for coal loading in a tamping coke oven

技术领域technical field

本实用新型涉及一种捣固焦炉装煤量监控装置,属于捣固焦炉技术领域。The utility model relates to a monitoring device for the amount of coal charged in a tamping coke oven, which belongs to the technical field of tamping coke ovens.

背景技术Background technique

目前,由于煤饼捣固过程中的人为影响因素较多,煤饼实际尺寸往往达不到标准尺寸,装煤量偏小,从而导致焦炉产量不达标。据统计,由于装煤操作工人为因素损失的年产量在3%左右,对于一座标准的年产量120万吨的5.5米捣固焦炉,损失产量价值约6000万元。At present, due to many human factors in the process of briquetting, the actual size of briquette often does not reach the standard size, and the coal loading is too small, resulting in substandard coke oven output. According to statistics, the annual output loss due to coal charging workers is about 3%. For a standard 5.5-meter tamping coke oven with an annual output of 1.2 million tons, the lost output value is about 60 million yuan.

实用新型内容Utility model content

为解决现有技术存在的技术问题,本实用新型提供了一种结构简单,使用方便,能够实时检测煤饼长度,自动报警的捣固焦炉装煤量监控装置。In order to solve the technical problems existing in the prior art, the utility model provides a monitoring device for the coal load of a tamping coke oven, which is simple in structure, convenient in use, can detect the length of coal cakes in real time, and automatically alarm.

为实现上述目的,本实用新型所采用的技术方案为一种捣固焦炉装煤量监控装置,其特征在于:包括固定在托煤板上方的测量支架,所述测量支架上固定有多个测量探头,所述测量探头沿煤饼长度方向布置,所述测量探头与信号检测处理单元相连接,所述信号检测处理单元与捣固焦炉主控系统相连接,所述信号检测处理单元包括驱动电路、模拟开关电路、C/V转换电路、整流与滤波电路、减法电路、放大滤波电路、模数转换电路及MCU处理器,所述驱动电路经模拟开关电路与测量探头的输入端相连接,所述测量探头的输出端经模拟开关电路与C/V转换电路的信号输入端相连接,所述C/V转换电路的信号输出端经整流与滤波电路与减法电路,所述减法电路的信号输出端与放大滤波电路的信号输入端相连接,所述放大滤波电路的信号输出端通过模数转换电路与MCU处理器,所述模拟开关电路的信号输入端与MCU处理器,MCU处理器通过无线模块与与捣固焦炉主控系统相连接。In order to achieve the above purpose, the technical solution adopted by the present utility model is a monitoring device for the amount of coal charged in a tamping coke oven, which is characterized in that it comprises a measuring bracket fixed on the top of the coal supporting plate, and a plurality of measuring brackets are fixed on the measuring bracket. A measuring probe, the measuring probe is arranged along the length direction of the briquettes, the measuring probe is connected with the signal detection and processing unit, the signal detection and processing unit is connected with the main control system of the tamping coke oven, and the signal detection and processing unit includes Drive circuit, analog switch circuit, C/V conversion circuit, rectifier and filter circuit, subtraction circuit, amplification filter circuit, analog-to-digital conversion circuit and MCU processor, the drive circuit is connected with the input end of the measuring probe through the analog switch circuit , the output end of the measuring probe is connected with the signal input end of the C/V conversion circuit through the analog switch circuit, the signal output end of the C/V conversion circuit is connected by the rectification and filter circuit and the subtraction circuit, the The signal output end is connected with the signal input end of the amplifying filter circuit, the signal output end of the amplifying filter circuit is connected to the MCU processor through the analog-to-digital conversion circuit, the signal input end of the analog switch circuit is connected to the MCU processor, and the MCU processor It is connected with the main control system of the tamping coke oven through a wireless module.

优选的,所述驱动电路包括有源振荡器和低通滤波电路,所述有源振荡器用于提供1MHz的交流信号,经过低通滤波电路滤波处理后,得到1MHz、1V的正弦电压。Preferably, the drive circuit includes an active oscillator and a low-pass filter circuit, the active oscillator is used to provide an AC signal of 1MHz, and after being filtered by the low-pass filter circuit, a sinusoidal voltage of 1MHz and 1V is obtained.

优选的,所述测量探头为激光传感器或红外传感器。Preferably, the measurement probe is a laser sensor or an infrared sensor.

优选的,所述捣固焦炉主控系统上还连接有报警器。Preferably, an alarm is also connected to the main control system of the tamping coke oven.

优选的,所述模拟开关电路采用ADG1212,其供电为±15V,二通道。Preferably, the analog switch circuit adopts ADG1212, whose power supply is ±15V, and has two channels.

与现有技术相比,本实用新型具有以下技术效果:本实用新型结构简单,使用方便,采用沿煤板长度安装多个测量探头,通过测量探头实时检测煤饼的长度,然后将煤饼长度信号传输给MCU处理器,MCU处理器将信号传输给捣固焦炉主控系统,进行报警及联锁控制。同时信号检测处理单元将测量探头的测量信号与初始状态信号相减得到传感器的敏感变化值,起到信号隔直效果,这样可以更有利于有用信号的放大等处理,得到更高的检测的灵敏度。Compared with the prior art, the utility model has the following technical effects: the utility model has the advantages of simple structure and convenient use. A plurality of measuring probes are installed along the length of the coal plate, and the length of the coal cake is detected in real time through the measuring probe, and then the length of the coal cake is measured. The signal is transmitted to the MCU processor, and the MCU processor transmits the signal to the main control system of the tamping coke oven for alarm and interlock control. At the same time, the signal detection and processing unit subtracts the measurement signal of the measurement probe from the initial state signal to obtain the sensitive change value of the sensor, which has the effect of signal DC isolation, which is more conducive to the amplification of useful signals and other processing, and obtains higher detection sensitivity .

附图说明Description of drawings

图1为本实用新型的结构示意图。Figure 1 is a schematic structural diagram of the utility model.

图2为本实用新型控制原理框图。FIG. 2 is a block diagram of the control principle of the utility model.

图3为本实用新型中C/V转换电路、整流滤波电路及减法电路的电路图。3 is a circuit diagram of a C/V conversion circuit, a rectification filter circuit and a subtraction circuit in the utility model.

具体实施方式Detailed ways

为了使本实用新型所要解决的技术问题、技术方案及有益效果更加清楚明白,以下结合附图及实施例,对本实用新型进行进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本实用新型,并不用于限定本实用新型。In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not intended to limit the present invention.

如图1至图3所示,一种捣固焦炉装煤量监控装置,包括固定在托煤板上方的测量支架1,测量支架1上固定有多个测量探头2,测量探头2沿煤饼长度方向布置,测量探头2与信号检测处理单元相连接,信号检测处理单元与捣固焦炉主控系统相连接,信号检测处理单元包括驱动电路、模拟开关电路、C/V转换电路、整流与滤波电路、减法电路、放大滤波电路、模数转换电路及MCU处理器,驱动电路经模拟开关电路与测量探头的输入端相连接,测量探头的输出端经模拟开关电路与C/V转换电路的信号输入端相连接,C/V转换电路的信号输出端经整流与滤波电路与减法电路,减法电路的信号输出端与放大滤波电路的信号输入端相连接,放大滤波电路的信号输出端通过模数转换电路与MCU处理器,模拟开关电路的信号输入端与MCU处理器,MCU处理器通过无线模块与与捣固焦炉主控系统相连接,捣固焦炉主控系统上还连接有报警器。As shown in Figures 1 to 3, a device for monitoring the amount of coal charged in a tamping coke oven includes a measuring bracket 1 fixed above the coal support plate, a plurality of measuring probes 2 are fixed on the measuring bracket 1, and the measuring probes 2 are along the coal. The cake is arranged in the length direction, the measuring probe 2 is connected with the signal detection and processing unit, the signal detection and processing unit is connected with the main control system of the tamping coke oven, and the signal detection and processing unit includes a drive circuit, an analog switch circuit, a C/V conversion circuit, a rectifier It is connected with the filter circuit, subtraction circuit, amplification filter circuit, analog-to-digital conversion circuit and MCU processor, and the drive circuit is connected with the input end of the measuring probe through the analog switch circuit, and the output end of the measuring probe is connected with the C/V conversion circuit through the analog switch circuit. The signal input end of the C/V conversion circuit is connected to the signal input end of the C/V conversion circuit, and the signal output end of the C/V conversion circuit is connected with the rectification and filtering circuit and the subtraction circuit. The analog-to-digital conversion circuit and the MCU processor, the signal input end of the analog switch circuit and the MCU processor, the MCU processor is connected with the tamping coke oven main control system through the wireless module, and the tamping coke oven main control system is also connected with a Alarm system.

本实用新型中测量探头为激光传感器或红外传感器,安装位置灵活,结合现场条件,沿煤饼长度方向可布置多个探头,数量越多,精度越高。C/V转换电路将传感器的敏感端接收的交流激励电流转换为交流电压信号,整流与滤波电路主要实现对交流电压信号整流为直流信号,通过二极管进行半波整流,得到正半周期的交流信号,然后经过二阶的正反馈有源滤波器得到直流信号;减法电路对直流信号的隔直,然后经放大滤波电路放大后,通过模数转换电路转换成数字信号传输给MCU处理器。MCU处理器将煤饼长度信号实时传输给捣固焦炉主控系统。当煤饼长度不达标报警时,捣固焦炉主控系统根据煤饼长度信号实时调整捣固机动作和给料机动作,直至煤饼满足要求。The measuring probe in the utility model is a laser sensor or an infrared sensor, the installation position is flexible, and combined with the site conditions, a plurality of probes can be arranged along the length direction of the briquettes, and the greater the number, the higher the precision. The C/V conversion circuit converts the AC excitation current received by the sensitive end of the sensor into an AC voltage signal. The rectifier and filter circuit mainly realizes the rectification of the AC voltage signal into a DC signal, and performs half-wave rectification through a diode to obtain a positive half-cycle AC signal. , and then the DC signal is obtained through the second-order positive feedback active filter; the DC signal is blocked by the subtraction circuit, and then amplified by the amplifying filter circuit, and then converted into a digital signal by the analog-to-digital conversion circuit and transmitted to the MCU processor. The MCU processor transmits the briquet length signal to the main control system of the tamping coke oven in real time. When the briquette length does not reach the standard and alarm, the main control system of the tamping coke oven adjusts the action of the tamping machine and the feeder in real time according to the length of the briquettes until the briquettes meet the requirements.

其中,驱动电路包括有源振荡器和低通滤波电路,有源振荡器用于提供1MHz的交流信号,经过低通滤波电路滤波处理后,得到1MHz、1V的正弦电压,提高敏感空间的场能。模拟开关电路采用ADG1212,其供电为±15V,二通道,其导通电容较小,为1pF,对后续电容传感器影响较小,通过控制通道切换可以满足不同的驱动与敏感电极分时复用工作。Among them, the drive circuit includes an active oscillator and a low-pass filter circuit. The active oscillator is used to provide an AC signal of 1MHz. After being filtered by the low-pass filter circuit, a sinusoidal voltage of 1MHz and 1V is obtained to improve the field energy of the sensitive space. . The analog switch circuit adopts ADG1212, its power supply is ±15V, two channels, and its on-capacitance is small, 1pF, which has little effect on the subsequent capacitive sensors, and can meet the time-division multiplexing work of different driving and sensitive electrodes by controlling the channel switching. .

以上所述仅为本实用新型的较佳实施例而已,并不用以限制本实用新型,凡在本实用新型的精神和原则之内所作的任何修改、等同替换和改进等,均应包在本实用新型范围内。The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention shall be included in the present invention. within the scope of the utility model.

Claims (5)

1. A tamping coke oven coal-charging amount monitoring device is characterized in that: the coal-tamping coke oven main control system comprises a measuring support fixed above a coal supporting plate, wherein a plurality of measuring probes are fixed on the measuring support and are arranged along the length direction of a coal cake, the measuring probes are connected with a signal detection processing unit, the signal detection processing unit is connected with a main control system of a tamping coke oven, the signal detection processing unit comprises a driving circuit, an analog switch circuit, a C/V conversion circuit, a rectifying and filtering circuit, a subtraction circuit, an amplifying and filtering circuit, an analog-to-digital conversion circuit and an MCU processor, the driving circuit is connected with the input end of the measuring probes through the analog switch circuit, the output end of the measuring probes is connected with the signal input end of the C/V conversion circuit through the analog switch circuit, the signal output end of the C/V conversion circuit is connected with the subtraction circuit through the rectifying and filtering circuit, and the signal output end of the subtraction circuit is connected with the signal input end of the amplifying and, the signal output end of the amplifying and filtering circuit is connected with the MCU processor through an analog-to-digital conversion circuit, the signal input end of the analog switch circuit is connected with the MCU processor, and the MCU processor is connected with the main control system of the tamping coke oven through a wireless module.
2. The apparatus of claim 1, wherein the coal charge monitoring device comprises: the driving circuit comprises an active oscillator and a low-pass filter circuit, wherein the active oscillator is used for providing 1MHz alternating current signals, and sinusoidal voltages of 1MHz and 1V are obtained after filtering processing of the low-pass filter circuit.
3. The apparatus of claim 1, wherein the coal charge monitoring device comprises: the measuring probe is a laser sensor or an infrared sensor.
4. The apparatus of claim 1, wherein the coal charge monitoring device comprises: and the main control system of the tamping coke oven is also connected with an alarm.
5. The apparatus of claim 1, wherein the coal charge monitoring device comprises: the analog switch circuit adopts ADG1212, and the power supply of the analog switch circuit is +/-15V and two channels.
CN201920713621.2U 2019-05-18 2019-05-18 Coal charging amount monitoring device for tamping coke oven Expired - Fee Related CN210065642U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111518575A (en) * 2020-05-22 2020-08-11 大连华锐重工焦炉车辆设备有限公司 Shaking feeder with operation fault detection function

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111518575A (en) * 2020-05-22 2020-08-11 大连华锐重工焦炉车辆设备有限公司 Shaking feeder with operation fault detection function
CN111518575B (en) * 2020-05-22 2023-07-28 大连华锐重工焦炉车辆设备有限公司 Shaking feeder with operation fault detection function

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Inventor after: Ye Jianfeng

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Granted publication date: 20200214