Belt conveyor carrier roller abnormal condition detection system based on electromagnetic induction

Abstract

The utility model discloses a belt conveyor carrier roller abnormal condition detection system based on electromagnetic induction, and relates to the technical field of intelligent detection. The device comprises a light source emitting device, a sensing optical cable, an optical fiber sensing demodulator, a service terminal, a shell, an annular permanent magnet, a temperature sensor and a Hall magneto-dependent sensor. The sensing optical cable is arranged along the direction of the belt conveyor, an optical signal emitted by the light source emitting device flows through the optical cable, and the optical cable penetrates through the shell to collect data signals measured by the temperature sensor and the Hall magneto-dependent sensor, transmits the signals to the optical fiber sensing demodulator for primary processing of the signals, and finally transmits the signals to the service terminal for judgment. According to the utility model, the rotating speeds and temperatures of a plurality of carrier rollers can be accurately detected based on electromagnetic induction, and the accuracy of positioning the abnormal carrier rollers is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of electric power equipment, in particular to an abnormal condition detection system for rollers of a belt conveyor based on electromagnetic induction. Background Art

[0002] Rollers play a vital role in belt conveyors. They not only support the operation of the conveyor belt, but also undertake the role of transferring and supporting materials. However, roller failure is a common problem in the operation of belt conveyors. These failures include roller jamming, wear, loosening, breaking, and falling. Once they occur, they may cause the belt conveyor to stop running and affect production efficiency. However, there are many problems with the current traditional roller fault detection methods. First, due to the large number of rollers, manual inspections are often difficult to detect faults in a timely manner. In addition, the working environment of the belt conveyor is dusty and noisy, and the reliability and accuracy of visual or sound detection are greatly challenged. Secondly, although conventional sensor detection can solve this problem to a certain extent, due to the huge number of rollers, a large number of sensors are required for layout and maintenance, which is costly and difficult to maintain, and is not feasible for practical use.

[0003] Distributed optical fiber sensing technology is widely used in long-distance distributed information monitoring fields, such as pipelines, transportation, and construction industries, because it can achieve distributed real-time monitoring along the line through a single optical cable and can be positioned in space. Distributed optical fiber has many advantages such as anti-electromagnetic interference, easy bending, and small size. It can also perform real-time remote monitoring and positioning of rollers along the line, making it very suitable for roller monitoring.

[0004] Electromagnetic induction technology also has important applications in roller fault detection. Electromagnetic induction sensors can determine the operating status of rollers by detecting electromagnetic changes during the rotation of rollers. The advantage of this technology is that it can achieve non-contact detection, reducing direct interference to rollers. The high sensitivity and rapid response capability of electromagnetic induction sensors enable them to accurately capture roller fault signals. By combining distributed optical fiber sensing technology and electromagnetic induction technology, comprehensive and real-time monitoring of roller faults can be achieved to ensure the stable operation of the conveying system. Therefore, a belt conveyor roller abnormality detection system based on electromagnetic induction is proposed. Utility Model Content

[0005] The utility model aims to provide a belt conveyor roller abnormal condition detection system based on electromagnetic induction to solve the above-mentioned technical problems of low detection efficiency, easy mutual interference of detection signals, relatively complex signal processing process, and difficult to control positioning accuracy.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a belt conveyor roller abnormal condition detection system based on electromagnetic induction, comprising a light source emitting device, a sensing optical cable, an optical fiber sensing demodulator, a service terminal, a shell, an annular permanent magnet, a temperature sensor and a Hall magnetic sensitive sensor;

[0008] The light source emitting device and the optical fiber sensor demodulator are respectively installed at the transport starting point and end point of the belt conveyor;

[0009] The sensor optical cable is arranged along the belt conveying direction and is used for sending temperature signals;

[0010] The service terminal is used to receive and analyze the signal from the optical fiber sensor demodulator, and will issue an alarm when an abnormal signal is detected;

[0011] The annular permanent magnet is installed on the side end surface of the roller to generate a magnetic field;

[0012] A temperature sensor and a Hall magnetic sensor are placed outside the shell to sense the temperature change and magnetic field change of the roller side end surface;

[0013] The shell is installed on the roller bracket, and the position of the shell is adapted to the annular permanent magnet.

[0014] Furthermore, the sensing optical cables are arranged in bundles inside the shell; when the detected roller moves, the temperature changes, and the temperature sensor senses the temperature change on the side end face of the roller, and transmits the temperature signal through the shell to the sensing optical cable inside, and the sensing optical cable sends the signal to the optical fiber sensor demodulator.

[0015] Furthermore, when the detected roller moves, the rotation speed fluctuates within a certain range. The annular permanent magnet is installed on the side end face of the roller and rotates together with the roller. The magnetic field generated by the annular permanent magnet will also change accordingly. The Hall magnetic sensor senses the change in the magnetic field, thereby generating a changing induced current, and transmits the electrical signal through the shell to the internal sensing optical cable, and the sensing optical cable sends the signal to the optical fiber sensor demodulator.

[0016] Furthermore, the annular permanent magnet is assembled from six arc-shaped permanent magnets, and the annular permanent magnet is installed on the side end surface of the roller and rotates with the roller.

[0017] Furthermore, the shell includes an upper half and a lower half, the upper half is a metal structure; the lower half is a rubber structure.

[0018] Furthermore, the shell is installed corresponding to the roller support position of each group of rollers and corresponds to the position of the permanent magnet on the side end face of the roller. The annular permanent magnet and the shell are installed at the corresponding position by welding, bolting or snap connection, and the sensor optical cable is arranged in a bundle inside the shell.

[0019] Furthermore, the service terminal is arranged in a remote control room, and is used for receiving, processing and displaying the position information, amplitude information and frequency information of the temperature signal and the electrical signal.

[0020] The utility model has the following beneficial effects:

[0021] The utility model can detect the electromagnetic changes during the rotation of the roller through the electromagnetic induction sensor to determine its operating status. The advantage of this technology is that it can realize non-contact detection and reduce direct interference to the roller. The high sensitivity and rapid response capability of the electromagnetic induction sensor enable it to accurately capture roller fault signals.

[0022] The belt conveyor roller abnormal condition detection system based on electromagnetic induction in the utility model can determine the motion states of multiple rollers to be detected on the belt conveyor based on the detection light beam, effectively improving the efficiency of detecting the motion states of the rollers to be detected, and effectively improving the accuracy of positioning the rollers to be detected.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 This is a schematic diagram of the structure of the annular permanent magnet of the utility model;

[0026] Figure 2 This is a schematic diagram of the installation position of the annular permanent magnet of the utility model;

[0027] Figure 3 It is a schematic diagram of the shell structure of the utility model;

[0028] Figure 4 It is a cross-sectional schematic diagram of the installation position of the utility model;

[0029] Figure 5 It is a detailed schematic diagram of the installation position of the utility model.

[0030] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0031] 1. Roller; 2. Ring permanent magnet; 3. Lower half; 4. Upper half; 5. Hole for Hall magnetic sensor; 6. Hole for temperature sensor; 7. Optical cable laying groove; 8. Shell; 9. Roller bracket. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the present invention, it should be understood that the terms "upper", "middle", "outer", "inner" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limitations on the present invention.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] See also Figure 1-Figure 5 As shown, the utility model is a belt conveyor roller abnormal condition detection system based on electromagnetic induction, including a light source emitting device, a sensing optical cable, an optical fiber sensing demodulator, a service terminal, a housing 8, an annular permanent magnet 2, a temperature sensor and a Hall magnetic sensor;

[0036] The light source transmitting device and the optical fiber sensor demodulator are installed at the transport starting point and end point of the belt conveyor respectively;

[0037] The sensing optical cable is laid along the conveying direction of the belt and is used to send temperature signals;

[0038] The service terminal is used to receive and analyze the signal from the optical fiber sensor demodulator, and will issue an alarm when an abnormal signal is detected;

[0039] The annular permanent magnet 2 is installed on the side end surface of the roller 1 to generate a magnetic field;

[0040] A temperature sensor and a Hall magnetic sensor are placed outside the housing 8 to sense the temperature change and magnetic field change of the side end surface of the roller 1;

[0041] The shell 8 is installed on the roller support 9 , and the position of the shell 8 is adapted to the annular permanent magnet 2 .

[0042] The sensing optical cables are arranged in bundles inside the shell 8; when the roller to be detected moves, the temperature will change, and the temperature sensor senses the temperature change on the side end face of the roller 1, and transmits the temperature signal through the shell 8 to the internal sensing optical cable, and the sensing optical cable sends the signal to the optical fiber sensor demodulator.

[0043] When the roller to be detected moves, the rotation speed fluctuates within a certain range. The annular permanent magnet 2 is installed on the side end face of the roller 1 and rotates together with the roller 1. The magnetic field generated by the annular permanent magnet 2 will also change accordingly. The Hall magnetic sensor senses the change in the magnetic field, thereby generating a changing induced current, and transmits the electrical signal through the shell 8 to the internal sensor optical cable, which sends the signal to the optical fiber sensor demodulator.

[0044] The annular permanent magnet 2 is assembled from six arc-shaped permanent magnets. The annular permanent magnet 2 is installed on the side end surface of the roller 1 and rotates together with the roller 1.

[0045] The housing 8 comprises an upper half block 4 and a lower half block 3 , wherein the upper half block 4 is a metal structure and the lower half block 3 is a rubber structure.

[0046] The shell 8 is installed at the corresponding position of the roller bracket 9 of each group of rollers 1, and corresponds to the position of the annular permanent magnet 2 on the side end face of the roller 1. The annular permanent magnet 2 and the shell 8 are installed at the corresponding positions by welding, bolts or snap connections, and the sensor optical cables are arranged in bundles inside the shell 8.

[0047] The service terminal is set up in the remote control room and is used to receive, process and display the position information, amplitude information and frequency information of the temperature signal and the electrical signal.

[0048] It needs further explanation:

[0049] like Figure 1 As shown, the annular permanent magnet 2 is assembled from six arc-shaped permanent magnets, which are installed on the side end surface of the roller 1 and rotate together with the roller 1.

[0050] like Figure 2 As shown, the annular permanent magnet 2 is connected to the side end surface of the roller 1 to be detected by welding, bolts or snaps.

[0051] like Figure 3As shown, the upper half 4 of the housing 8 is a metal structure, which is easy to conduct heat and can quickly sense temperature changes, facilitating accurate measurement of the temperature sensor; the lower half 3 is a rubber structure, which has strong heat preservation ability, prevents heat loss, and ensures the accuracy of measurement. The upper half 4 is provided with a temperature sensor hole 6 and a Hall magnetic sensor hole 5, and the lower half 3 is provided with an optical cable laying groove 7. The sensing optical cables are arranged in bundles in the housing 8, which can increase the resolution of the distributed optical fiber sensor demodulator for the signal position.

[0052] like Figure 5 As shown, the temperature sensor and the Hall magnetic sensor are installed on the housing 8, the housing 8 is arranged along the running direction of the belt conveyor, the annular permanent magnet 2 is arranged on the side end face of the roller 1, the roller 1 and the annular permanent magnet 2 rotate at the same time, and the temperature sensor and the Hall magnetic sensor collect the signal and transmit it to the sensor optical cable, which is then transmitted to the service terminal. The service terminal receives the signal and monitors the running status of each roller to be detected in real time and determines the position and fault type of the faulty roller.

[0053] The temperature sensor is close to the side end surface of the roller 1 so that when the temperature of the roller to be detected changes when it rotates, the temperature sensor collects the temperature signal and transmits it to the sensing optical cable.

[0054] When the roller to be detected moves: the annular permanent magnet 2 is installed on the side end face of the roller 1. When the roller to be detected 1 rotates, it drives the annular permanent magnet 2 to rotate. The magnetic field generated is different due to the different rotation speeds. The Hall magnetic sensor senses the change in the strength of the magnetic field, forms an induced current and transmits it to the sensing optical cable.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. The belt conveyor roller abnormal condition detection system based on electromagnetic induction is characterized by: It includes a light source emitting device, a sensing optical cable, an optical fiber sensing demodulator, a service terminal, a shell, a ring-shaped permanent magnet, a temperature sensor and a Hall magnetic sensor; The light source emitting device and the optical fiber sensor demodulator are respectively installed at the transport starting point and end point of the belt conveyor; The sensor optical cable is arranged along the belt conveying direction and is used for sending temperature signals; The service terminal is used to receive and analyze the signal from the optical fiber sensor demodulator, and will issue an alarm when an abnormal signal is detected; The annular permanent magnet is installed on the side end surface of the roller to generate a magnetic field; A temperature sensor and a Hall magnetic sensor are placed outside the shell to sense the temperature change and magnetic field change of the roller side end surface; The shell is installed on the roller bracket, and the position of the shell is adapted to the annular permanent magnet.

2. The belt conveyor roller abnormal condition detection system based on electromagnetic induction according to claim 1 is characterized in that: The sensing optical cables are arranged in bundles inside the shell; when the roller to be detected moves, the temperature will change, and the temperature sensor will sense the temperature change on the side end face of the roller, and transmit the temperature signal through the shell to the sensing optical cable inside, and the sensing optical cable will send the signal to the optical fiber sensor demodulator.

3. The belt conveyor roller abnormal condition detection system based on electromagnetic induction according to claim 2 is characterized in that: When the roller to be detected moves, the rotation speed fluctuates within a certain range. The annular permanent magnet is installed on the side end face of the roller and rotates together with the roller. The magnetic field generated by the annular permanent magnet will also change accordingly. The Hall magnetic sensor senses the change in the magnetic field, thereby generating a changing induced current, and transmits the electrical signal through the shell to the internal sensing optical cable, and the sensing optical cable sends the signal to the optical fiber sensor demodulator.

4. The belt conveyor roller abnormal condition detection system based on electromagnetic induction according to claim 3 is characterized in that: The annular permanent magnet is assembled from six arc-shaped permanent magnets. The annular permanent magnet is installed on the side end surface of the roller and rotates with the roller.

5. The belt conveyor roller abnormal condition detection system based on electromagnetic induction according to claim 4 is characterized in that: The shell comprises an upper half and a lower half, wherein the upper half is a metal structure and the lower half is a rubber structure.

6. The belt conveyor roller abnormal condition detection system based on electromagnetic induction according to claim 5 is characterized in that: The shell is installed at the corresponding position of the roller support of each group of rollers and corresponds to the position of the permanent magnet on the side end face of the roller. The annular permanent magnet and the shell are installed at the corresponding position by welding, bolting or snap connection, and the sensor optical cable is arranged in a bundle around the shell.

7. The belt conveyor roller abnormal condition detection system based on electromagnetic induction according to claim 6 is characterized in that: The service terminal is arranged in the remote control room and is used for receiving, processing and displaying the position information, amplitude information and frequency information of the temperature signal and the electric signal.

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