Quality inspection system for coal preparation plant

Abstract

The utility model relates to the technical field of coal quality detection, and discloses a coal preparation plant quality inspection system which comprises a sampling module used for taking out coal samples, a sample conveying module used for conveying the coal samples in the quality inspection process, a quality inspection module used for detecting the quality of the coal samples, a video monitoring system used for monitoring the quality inspection process and a control system. The control system is in communication connection with the sampling module, the sample sending module, the quality inspection module and the video monitoring system; the sampling module comprises an environment detection module, a belt speed detection unit, a coal density detection unit and a mechanical arm sampling unit. According to the utility model, the environment detection module is matched with the video monitoring system, and the belt speed detection unit, the coal density detection unit and the mechanical arm sampling unit are arranged in places with complex coal conveying environments to form a multiple calibration mechanism, so that the sampling progress is accelerated, and the quality inspection precision is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal quality detection technical field, concretely relates to a coal preparation plant quality inspection system. BACKGROUND

[0002] Coal accounts for more than 50% in the energy consumption in our country, and its quality directly influences the operation efficiency of core industries such as power generation and metallurgy, and coal quality indexes (such as sulfur content and ash content) are key parameters for clean utilization of coal. The existing coal quality inspection system basically relies on multiple sensors to monitor the coal condition and utilizes a coal quality analyzer to sample and analyze the coal quality. Although the cost is not high, the method is relatively mechanical and single. Since dust, humidity, vibration and electromagnetic interference seriously affect the performance of the sensor, the sampling accuracy is affected, so the stability of the quality inspection system is poor, and the accuracy is easily affected. UTILITY MODEL CONTENT

[0003] The utility model aims at overcoming the deficiencies in the prior art, providing a coal preparation plant quality inspection system, by setting up an environment detection module in cooperation with a video monitoring system, a belt speed detection unit, a coal density detection unit and a mechanical arm sampling unit are arranged at a place with complex coal transportation environment to form a multiple calibration mechanism, the sampling progress is improved, and the quality inspection accuracy is improved.

[0004] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a coal preparation plant quality inspection system, comprising a sampling module for taking out coal samples, a sample feeding module for transmitting coal samples in the quality inspection process, a quality inspection module for detecting the quality of coal samples, a video monitoring system for monitoring the quality inspection process, and a control system; the control system is in communication connection with the sampling module, the sample feeding module, the quality inspection module and the video monitoring system.

[0005] The sampling module comprises an environment detection module, a belt speed detection unit, a coal density detection unit and a mechanical arm sampling unit.

[0006] Further, it further comprises an auxiliary sample weighing module for collecting and weighing coal samples from the sampling module, an auditing module for auditing the output results of the quality inspection system, and a data reporting terminal; the data reporting terminal, the auxiliary sample weighing module and the auditing module are in communication connection with the control system.

[0007] Further, the sampling module is located at the front end of the sample feeding module, the auxiliary sample weighing module has at least one group located at the front end of the sample feeding module, and the auditing module is located at the rear end of the sample feeding module.

[0008] Further, the environment detection module comprises a dust detector, a humidity detector, a vibration detection device and an electromagnetic interference detection device.

[0009] Further, the control system comprises a subsystem connected with the sampling module, and the subsystem is arranged close to the sampling module.

[0010] Further, the subsystem further comprises a past data storage unit for storing past coal transportation environment data of the coal mine.

[0011] The beneficial effects of the utility model are: through the setting of the environment detection module cooperates the video monitoring system, sets and enables the belt speed detection unit, the coal density detection unit and the mechanical arm sampling unit in the complex coal transportation environment and forms the multiple calibration mechanism, and then according to past data comparison judgment, when the complex environment can influence the sensor efficiency and influence the video monitoring effect, the sampling interval is controlled according to the belt speed and the coal density, the environmental influence is reduced, the sampling precision is improved, and the quality inspection precision is improved;The sampling interval is changed for several times at the same belt speed and coal density, and the quality inspection module data of different sampling intervals are compared. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a coal preparation plant quality inspection system structure schematic diagram;

[0013] Figure 2 It is a sampling module structure schematic diagram. DETAILED DESCRIPTION

[0014] The technical solutions in the embodiments of the utility model will be described clearly and completely below in combination with the drawings and specific embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0015] The direction terms mentioned in the utility model, such as ''up'', ''down'', ''front'', ''back'', ''left'', ''right'', ''inside'', ''outside'', ''side'', ''top'' and ''bottom'', are only the orientation of the drawings, and the direction terms are used to explain and understand the utility model, not to limit the utility model.

[0016] Embodiment:

[0017] As shown in Figure 1 A coal preparation plant quality inspection system for quality inspection of coal transported by a coal transportation system after coal mining, comprising a sampling module for taking coal samples from the transportation system, a sample feeding module for transporting coal samples in the quality inspection process, a quality inspection module for detecting the quality of the coal samples, a video monitoring system for monitoring the quality inspection process, and a control system for controlling and collecting all the above information;The control system is in communication connection with the sampling module, the sample feeding module, the quality inspection module and the video monitoring system;

[0018] The sampling module comprises an environment detection module, a belt speed detection unit, a coal density detection unit and a mechanical arm sampling unit.

[0019] It also includes an auxiliary sample weighing module for collecting and weighing coal samples from the sampling module, an audit module for auditing the output results of the quality inspection system, and a data reporting terminal; the data reporting terminal, the auxiliary sample weighing module and the audit module are in communication connection with the control system; the data reporting terminal can be a computer terminal or a mobile phone terminal, etc., and the audit module transmits information to the control system backup and displays the audit results on the data reporting terminal.

[0020] The sampling module is located at the front end of the sample feeding module, the auxiliary sample weighing module is at least one set located at the front end of the sample feeding module, and the audit module is located at the rear end of the sample feeding module.

[0021] The environmental detection module includes a dust detector, a humidity detection instrument, a vibration detection device, and an electromagnetic interference detection device; the dust detector is, for example, an OSEN-GF1000 dust concentration detector, a DH-FC1000 dust monitor, etc.; the humidity detection instrument is, for example, a German MuTec HUMY3000 online moisture meter, an ARS-SF10 halogen moisture rapid detector, etc.; the vibration detection device is, for example, a TCT-1 transportation vibration monitor, a Jiejie LORA temperature and vibration composite sensor, etc.; the electromagnetic interference detection device is, for example, an HZKC-3000 electromagnetic interference resistance test device, an EMI scanner (such as the OI-EAS series), etc.

[0022] The control system includes a subsystem connected with the sampling module, and the subsystem is arranged close to the sampling module; the subsystem realizes near control, prevents interference, and improves work efficiency.

[0023] The subsystem also includes a past data storage unit for storing past coal transportation environment data of the coal mine, judging whether to start the environmental detection module in advance according to the past data, and comparing the past data with the data measured by the environmental detection module.

[0024] By setting the environmental detection module in cooperation with the video monitoring system, a belt speed detection unit, a coal density detection unit, and a mechanical arm sampling unit are set and enabled in a complex coal transportation environment to form a multiple calibration mechanism, and then the past data are compared to determine whether the environment is complex and may affect the efficiency of the sensor and the effect of the video monitoring, and the sampling interval is controlled according to the belt speed and the coal density to reduce the environmental influence, improve the sampling precision, and improve the quality inspection precision; the sampling interval is changed multiple times at the same belt speed and coal density, and the data of the quality inspection module at different sampling intervals are compared.

[0025] The control system adopts a modular architecture design, and the core hub is composed of an existing industrial central control unit (CCU).

[0026] The sample delivery module adopts a closed-loop control architecture, and the core configuration uses existing high-precision servo-driven belt conveyors (power density ≥ 0.8 kW / m), integrated GNSS positioning modules (positioning accuracy ± 1 cm) and microwave density meters (measurement error < 0.5%), and realizes dynamic adjustment of the conveying capacity through a fuzzy PID algorithm (adjustment response time ≤ 500 ms).

[0027] The sample delivery module integrates existing sample particle size verification, sample mechanical stirring and conveying facilities, and uses intelligent robot-assisted conveying, which has the advantages of flexible positioning of each component. The auxiliary sample weighing system has been greatly improved in design compared to manual sample weighing, which can improve the sample weighing efficiency and shorten the time, and reduce the interference of human factors on sample weighing.

[0028] The video monitoring system is mainly set at key operation points with human operation to supervise the influence of human subjective factors on key detection links, and is also set at sample particle size compliance verification links and other factors that may affect detection. The existing multispectral imaging technology is used to construct an intelligent perception matrix, and the core is composed of an industrial-grade high-frame-rate CMOS sensor array (≥ 60 fps@4K) with adaptive exposure compensation algorithm to realize all-weather dynamic capture of coal flow.

[0029] The quality inspection module uses existing integrated InGaAs spectral imaging units (resolution 1280x1024) and ResNet-50 transfer learning models to realize multi-dimensional feature extraction of coal surface texture (GLCM features), color space (HSV histogram) and mineral composition (NIR spectrum), and combined with a cloud quality database (containing 1000+ coal type feature vectors) to realize coal quality classification under ASTM D388 standard, with a classification accuracy of ≥ 98.5%. In addition, the technical research and development of sample particle size verification and sample stirring system need to be uniformly developed and configured in the intelligent integrated coal quality detection centralized control system.

[0030] The auditing system is an upgrading innovation aiming at the drawbacks of manual auditing of detection data. The auditing system integrates a multi-source heterogeneous data fusion engine with an existing intelligent auditing terminal, internally embeds a face recognition module based on improved YOLOv5 and a GB / T standard dynamic rule base, combines a PostgreSQL time series database (storage period ≥ 10 years) and a Fabric block chain storage node to realize automatic checking (deviation threshold value is configurable), operation audit tracking (log granularity reaches μs level) and compliance report intelligent generation of detection data. Through statistical analysis of detection data accumulated for many years of a certain mine, a certain coal type and a certain detection item, a statistical model is established, a confidence interval meeting its own requirements in a certain period is determined to screen and distinguish the detection data of the day, and the abnormal reason of the abnormal data is analyzed, and the analysis result is fed back to the auditing personnel, so that the objectivity, standardization, accuracy and efficiency of the detection data are maximized, and the most favorable and reliable mathematical basis is provided for guiding mine production, washing and selecting parameter configuration, commodity coal sales pricing and coal type index decision-making.

[0031] The above is only used to illustrate the technical scheme of the utility model and is not limited, and other modifications or equivalent replacements of the technical scheme of the utility model made by those skilled in the art should be covered in the scope of the claims of the utility model.

Claims

1. A coal preparation plant quality inspection system, characterized in that: It includes a sampling module for taking coal samples, a sample delivery module for transmitting coal samples during the quality inspection process, a quality inspection module for detecting the quality of coal samples, a video monitoring system for monitoring the quality inspection process, and a control system; the control system is communicatively connected to the sampling module, the sample delivery module, the quality inspection module, and the video monitoring system. The sampling module includes an environmental monitoring module, a belt speed monitoring unit, a coal density monitoring unit, and a robotic arm sampling unit.

2. The coal preparation plant quality inspection system according to claim 1, characterized in that: It also includes an auxiliary weighing module for collecting and weighing coal samples from the sampling module, an auditing module for reviewing the output results of the quality inspection system, and a data reporting terminal; the data reporting terminal, the auxiliary weighing module, and the auditing module are all communicatively connected to the control system.

3. The coal preparation plant quality inspection system according to claim 2, characterized in that: The sampling module is located at the front end of the sample delivery module, at least one set of the auxiliary weighing modules is located at the front end of the sample delivery module, and the review module is located at the rear end of the sample delivery module.

4. The coal preparation plant quality inspection system according to claim 1, characterized in that: The environmental monitoring module includes a dust detector, a humidity detector, a vibration detector, and an electromagnetic interference detector.

5. A coal preparation plant quality inspection system according to claim 1, characterized in that: The control system includes a subsystem connected to the sampling module, the subsystem being positioned close to the sampling module.

6. A coal preparation plant quality inspection system according to claim 5, characterized in that: The subsystem also includes a historical data storage unit for storing historical coal transportation environmental data from the coal mine.

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