CN221092402U - Monitoring system for running state of belt conveyor - Google Patents
Monitoring system for running state of belt conveyor Download PDFInfo
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- CN221092402U CN221092402U CN202322575081.5U CN202322575081U CN221092402U CN 221092402 U CN221092402 U CN 221092402U CN 202322575081 U CN202322575081 U CN 202322575081U CN 221092402 U CN221092402 U CN 221092402U
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- vibration measuring
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- Control Of Conveyors (AREA)
Abstract
The utility model relates to a monitoring system for the running state of a belt conveyor, which comprises a distributed vibration measuring optical fiber, a monitoring host, a PLC main control module and a server, wherein the monitoring host is used for acquiring monitoring signals of the distributed vibration measuring optical fiber, and generating alarm signals by the monitoring host and sending the alarm signals to the PLC main control module; the monitoring host sends a monitoring signal to the server; a dome-shaped shield is arranged above the belt conveyor carrier roller group, and distributed vibration measuring optical fibers are paved along the top end of the inner side of the shield; the top end of the inner side of the shield is also provided with an optical fiber fixing frame, and the distributed vibration measuring optical fiber is coiled in the optical fiber fixing frame.
Description
Technical Field
The utility model relates to the technical field of monitoring of the running state of a belt conveyor, in particular to a monitoring system of the running state of the belt conveyor.
Background
When the belt conveyor conveys continuous materials in a long distance, the efficiency is high, the cost is low, the energy consumption can be reduced, and the device is universal equipment for conveying bulk cargo in factories. The conveying path of the belt conveyor is composed of a large number of carrier roller groups and a frame, a large amount of manpower is required to be occupied for daily inspection, the running state of the belt conveyor along the carrier roller groups is judged mainly by means of sound during daily inspection, and the sound of severe whistle and collision is generated especially under the conditions that the carrier rollers are damaged or accumulated materials are jammed due to bearings, sliding friction occurs between the belt and the frame and the like.
With the rapid development of the optical fiber detection technology, under the basic support of Raman scattering, OTDR technology principle, rayleigh scattering, phase sensitive optical time domain reflection principle and the like, the application technology of temperature measurement and vibration measurement is also gradually mature, and the optical fiber has great improvement of the accurate positioning capability of environment monitoring and abnormal signals and the stability of a monitoring system. In the optical fiber monitoring system in the prior art, optical fibers are mostly directly arranged on a carrier roller frame or paved on the ground surfaces at two sides of a carrier roller, and although abnormal sounds of a belt conveyor can be monitored, the sounds are too divergent and not concentrated enough, and when a serious accident occurs to the carrier roller, the optical fiber system is easily damaged, so that the cost is increased.
Disclosure of utility model
The utility model aims to solve the problems that the laying position of the optical fiber monitoring system is unfavorable for sound concentration and is extremely easy to damage, thereby providing the optical fiber monitoring system capable of concentrating fault sounds and reducing damage.
The utility model solves the problems, and adopts the following technical scheme:
The monitoring system for the running state of the belt conveyor comprises a distributed vibration measuring optical fiber, a monitoring host, a PLC main control module and a server, wherein the monitoring host is used for acquiring monitoring signals of the distributed vibration measuring optical fiber, and generating alarm signals by the monitoring host and sending the alarm signals to the PLC main control module; the monitoring host sends a monitoring signal to the server; a dome-shaped shield is arranged above the belt conveyor carrier roller group, and distributed vibration measuring optical fibers are paved along the top end of the inner side of the shield; the top end of the inner side of the shield is also provided with an optical fiber fixing frame, and the distributed vibration measuring optical fiber is coiled in the optical fiber fixing frame.
Compared with the prior art, the utility model adopting the technical scheme has the outstanding characteristics that:
The monitoring signal is sent to the server through the distributed vibration measuring optical fiber, so that an external system monitors the state of the belt conveyor; generating an alarm signal through the monitoring signal and sending the alarm signal to the PLC main control module so as to remind an operator in time when a fault occurs; the optical fiber is fixed at the top end of the dome-shaped shield, when sound appears, the sound is concentrated to the top end of the shield through the reflection of the shield, the sound is more concentrated, so that the optical fiber arranged at the top end of the shield can monitor abnormal sound, and alarm is given as soon as possible; the optical fiber is arranged at the top end of the shield, so that external damage factors of the optical fiber can be reduced; the optical fiber fixing frame winds part of optical fibers, and when the shield is replaced or added, the optical fibers in the optical fiber fixing frame can be stretched for use.
Preferably, the utility model further adopts the technical scheme that:
the guard shield is formed by splicing and fixing a plurality of dome-shaped guard shield pieces, an edge screw hole is formed in the joint of every two guard shields, an optical fiber fixing piece is fixed at the position of the edge screw hole, a fixing buckle is arranged on the optical fiber fixing piece, and the distributed vibration measuring optical fiber penetrates through the fixing buckle to be fixed with the optical fiber fixing piece.
The optical fiber fixing piece is fixed at the position of the edge screw hole, so that the optical fiber fixing piece is easy to disassemble and assemble; the optical fiber is fixed at the top end of the shield through the fixing buckle, which is equivalent to being hoisted at the top end of the shield so as to be convenient to detach.
The optical fiber fixing frame comprises a cross concave plate, wherein the cross concave plate is fixed on the protective cover through bolts, through holes are formed in the edges of two sides of the vertical plate of the cross concave plate, and distributed vibration measuring optical fibers are coiled in the middle of the cross concave plate and extend to two sides through the through holes.
The cross-shaped intaglio plate provides a fixing space for coiled optical fibers, and meanwhile, the optical fibers can extend to two sides through the through holes, so that the fixing and material cost of the sealing box are reduced, and the disassembly and assembly are convenient.
The database and the PLC main control module are also connected with belt conveyor remote supervision equipment.
The belt conveyor remote supervision equipment is used for receiving data transmission of the database and the PLC main control module, is convenient for remotely supervising the belt conveyor, and can be shut down in time when faults occur.
The monitoring host is provided with a signal feature library, the database sends monitoring signals to the belt conveyor remote monitoring equipment for feature labeling, and the labeled feature information is returned to the signal feature library.
The signal feature library is used for storing feature information so as to compare the signal feature library with the stored feature information when the monitoring host monitors the abnormal signal next time and quickly acquire the reason of the abnormal condition.
Drawings
FIG. 1 is a schematic diagram of signal transmission according to an embodiment of the present utility model;
FIG. 2 is a schematic diagram of sound aggregation in accordance with an embodiment of the present utility model;
FIG. 3 is a schematic diagram of an embodiment of the present utility model;
FIG. 4 is a bottom view of an embodiment of a fiber optic mount of the present utility model;
FIG. 5 is a block diagram of an optical fiber holder according to an embodiment of the present utility model;
FIG. 6 is a bottom view of an optical fiber holder according to an embodiment of the present utility model;
in the figure: 1. a shield; 2. a distributed vibration measuring optical fiber; 3. edge screw holes; 4. an optical fiber fixing frame; 5. an optical fiber fixing member; 51. a screw head; 52. a flange nut is arranged at the outer side; 53. a flange nut is arranged on the inner side; 54. a threaded portion of the screw; 55. an optical cable fixing buckle; 56. loosening the nut with a nonmetallic insert; 57. an optical cable buckle supporting rod with a nut; 59. the screw has no threaded portion.
Detailed Description
The utility model is further described below in connection with the following examples which are provided for the purpose of better understanding of the present utility model and are, therefore, not to be construed as limiting the scope of the utility model.
Referring to fig. 1-6, the embodiment discloses a monitoring system for the running state of a belt conveyor, which comprises a distributed vibration measuring optical fiber 2, a monitoring host, a PLC main control module and a server, wherein the monitoring host is used for acquiring a monitoring signal of the distributed vibration measuring optical fiber 2, and generating an alarm signal by the monitoring host and sending the alarm signal to the PLC main control module; the monitoring host sends a monitoring signal to the server; a dome-shaped shield 1 is arranged above the belt conveyor carrier roller group, and distributed vibration measuring optical fibers 2 are paved along the top end of the inner side of the shield 1; the top end of the inner side of the shield 1 is also provided with an optical fiber fixing frame 4, and the distributed vibration measuring optical fiber 2 is coiled in the optical fiber fixing frame 4.
The monitoring signal is sent to the server by arranging the distributed vibration measuring optical fiber 2 so that an external system monitors the state of the belt conveyor; generating an alarm signal through the monitoring signal and sending the alarm signal to the PLC main control module so as to remind an operator in time when a fault occurs; the distributed vibration measuring optical fiber 2 is fixed at the top end of the dome-shaped shield 1, when sound appears, the sound is concentrated to the top end of the shield 1 through the reflection of the shield 1, and the sound is more concentrated, so that the distributed vibration measuring optical fiber 2 arranged at the top end of the shield 1 monitors abnormal sound, and the alarm is given as soon as possible; the distributed vibration measuring optical fiber 2 is arranged at the top end of the shield 1, so that external damage factors of the distributed vibration measuring optical fiber 2 can be reduced; the optical fiber fixing frame 4 is wound with part of the distributed vibration measuring optical fiber 2, and when the shield 1 is replaced or the shield 1 is added, the distributed vibration measuring optical fiber 2 in the optical fiber fixing frame 4 can be stretched for use.
In this embodiment, the shield 1 is formed by splicing and fixing a plurality of dome-shaped shield 1 sheets, an edge screw hole 3 is provided at the joint of each two shields 1, an optical fiber fixing piece 5 is fixed at the position of the edge screw hole 3, a fixing buckle 55 is provided on the optical fiber fixing piece 5, and the distributed vibration measuring optical fiber 2 passes through the fixing buckle 55 and is fixed with the optical fiber fixing piece 5.
In the embodiment, the shield 1 is in a circular arch shape, and specifically, the shield 1 above the belt conveyor is in an elliptical arc surface; in the figure, the point A is the fixed position of the distributed vibration measuring optical fiber 2, the point B, C is the end face position of the rotating shaft of the carrier roller, the points A and B are focuses corresponding to left oval cambered surfaces, the points A and C are focuses corresponding to right oval cambered surfaces, according to oval characteristics, sound emitted by the focus of the end face B, C of the carrier roller shaft is converged to the position of the point A of the distributed vibration measuring optical fiber 2, and sound waves emitted by the end face B, C of the carrier roller shaft can reach the position of the distributed vibration measuring optical fiber A after being reflected by different positions of the shield 1, so that sound aggregation can be realized.
In this embodiment, an edge screw hole 3 is arranged at the top of a single side of each belt conveyor shield 1, and preferably, the edge screw hole 3 is a rectangular fixing screw hole for hanging and fixing the distributed vibration measuring optical fiber 2.
In this embodiment, a pair of threaded holes are formed in the shield 1, the optical fiber fixing frame 4 comprises a cross-shaped concave plate, the cross-shaped concave plate is protruded and fixed on the shield 1 through the threaded holes by using bolts, through holes are formed in the edges of two sides of the vertical plate of the cross-shaped concave plate, and the distributed vibration measuring optical fiber 2 is coiled in the middle of the cross-shaped concave plate and extends to two sides through the through holes. The cross intaglio provides the fixed space for coiled distributed vibration measuring optical fiber 2, and simultaneously, distributed vibration measuring optical fiber 2 can extend to both sides through the through hole, has reduced seal box fixation and material cost, is convenient for dismouting.
In the present embodiment, the bolts of the optical fiber fixing frame 4 and the optical fiber fixing member 5 are provided as shown in the drawing, including a screw head 51, a screw unthreaded portion 59, an outer flanged nut 52, a screw threaded portion 54, which are all arranged outside the belt conveyor housing 1, an inner flanged nut 53, a screw threaded portion 54, a threaded optical fiber clasp stay 57, and a non-metallic insert loosening nut 56, which are all arranged inside the belt conveyor housing 1. Wherein, the fixing buckle 55 can be set as an opening snap ring buckle, resembling a key ring; the distributed vibration measuring optical fiber 2 can also be fixed by using a closed round buckle and a weather-resistant ribbon.
In this embodiment, when the shroud 1 needs to be opened to maintain equipment such as a carrier roller, only two wrenches are required, 1 fixing screw head 51 and 1 unscrewing outer flanged nut 52, and the belt conveyor shroud 1 is moved to one side, so that the fixing bolts can be separated from the shroud 1. The optical fiber fixing frame 4 is also assembled and disassembled in the same way.
In the embodiment, the distributed vibration measuring optical fiber 2 is directly connected to a monitoring host, and the monitoring system host collects, processes, analyzes and stores monitoring signals in real time, and a signal feature library is arranged in the monitoring host; the monitoring host is connected with the PLC main control module through OPC communication, the PLC main control module is the belt conveyor main control PLC equipment, and the monitoring host outputs alarm signals and running state self-checking results to the PLC according to the signal feature library; the monitoring signals with time and length identifications are uploaded to the server in real time through the Ethernet connected with the server, wherein the vibration monitoring signals can be restored to audio signals by the server for playing. The server is provided with a software platform and can display curves of time variation of each point position or line monitoring signal according to the point position and time selection instruction. Wherein the response frequency of the monitoring host needs to be 5-10000hz, and the sensitivity is not lower than 5n epsilon; the vibration detection optical cable along the line of the belt conveyor is a single-mode optical cable, and the thermoplastic low-smoke halogen-free high-temperature-resistant flame-retardant material with high mechanical property, waterproof property and corrosion resistance is used as an armoured sheath.
In the embodiment, a temperature-measuring distributed vibration measuring optical fiber 2 is wound on a driving station part of a medium-distance belt conveyor and a long-distance belt conveyor (more than 100 meters) in a conventional surface bonding mode, and the temperature and the vibration amplitude of the system are monitored. The distributed vibration measuring optical fiber 2 is arranged at the position 10 meters from the driving station and is used for monitoring abnormal sounds generated by the belt conveyor due to damage or friction with the belt along the carrier roller and the frame structure, and the abnormal sounds are transmitted to the distributed vibration measuring optical fiber 2 to be judged as abnormal vibrations.
In this embodiment, the monitoring host continuously monitors and records vibration signals during operation of the belt conveyor, and performs signal processing in conventional manners such as wavelet denoising and singularity detection. When an abnormal vibration point is detected, counting belt conveyor vibration signals of a region with the point being located at 100 meters, and if the similar continuous abnormal point length exceeds 5 meters and is lower than 25% of the total statistical data, determining that abnormal vibration occurs in the region;
In the embodiment, the position and the duration of the abnormal vibration measured by the host are monitored, and only abnormal vibration signals with the vibration area continuously exceeding 5 meters and the duration exceeding 10 minutes are screened, so that the abnormal vibration signals are judged to be abnormal vibration identification signals; when abnormal vibration identification signals appear, in an initial data accumulation stage, personnel of belt conveyor remote supervision equipment judge the reasons of the abnormal vibration through video monitoring equipment or field investigation, and the reasons and the identification signals are stored in a system host in a pairing mode to form an identification signal feature library. When the abnormal vibration identification signal stored in the feature library occurs, the monitoring host directly provides the position and the reason of the abnormal vibration according to the features of the abnormal vibration identification signal, and alarms to the belt conveyor remote monitoring equipment through the PLC main control module, and the remote monitoring personnel can restore the site sound through the software platform of the database.
In this embodiment, abnormal vibration alarm signals along the belt conveyor and belt conveyor operation signal linkage logic are set in the PLC master control module: after the continuous operation time of the belt conveyor exceeds 5 minutes, the PLC main control module starts to receive abnormal vibration alarm signals along the belt conveyor.
In this embodiment, the method for arranging the vibration measuring optical fibers 2 along the line of the belt conveyor is as follows: the distributed vibration measuring optical fiber 2 is connected with a monitoring host or enters a detection area of the next belt conveyor after bypassing an accessory structure of the belt conveyor with smaller vibration, and the areas with larger vibration such as a driving station, a discharging hopper and the like are avoided; each shield 1 is provided with 1 optical fiber fixing member 5; an optical fiber fixing frame 4 is arranged at intervals of 20 meters along the optical fiber, 5 meters of distributed vibration measuring optical fibers 2 are coiled in the optical fiber fixing frame, and the distributed vibration measuring optical fibers 2 coiled in the box are tightly attached to the optical fiber frame; when the belt conveyor shield 1 in the area near the optical fiber fixing frame needs to be disassembled, the distributed vibration measuring optical fiber 2 in the box is released so as to prevent the distributed vibration measuring optical fiber 2 from being damaged. The distributed vibration measuring optical fibers 2 stored in the optical fiber fixing frame are all sprayed with special colors to be used as the distinction between the distributed vibration measuring optical fibers and the optical fibers outside the frame, so that the relative positions of the distributed vibration measuring optical fibers 2 and the belt conveyor can be conveniently determined and restored after the release.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the scope of the claims, but rather to cover all equivalent modifications within the scope of the present utility model as defined by the appended claims.
Claims (5)
1. Belt feeder running state's monitoring system, including distributed vibration measuring optic fibre, monitoring host computer, PLC main control module and server, its characterized in that: the monitoring host is used for acquiring monitoring signals of the distributed vibration measuring optical fiber, generating alarm signals by the monitoring host, and sending the alarm signals to the PLC main control module; the monitoring host sends a monitoring signal to the server; a dome-shaped shield is arranged above the belt conveyor carrier roller group, and distributed vibration measuring optical fibers are paved along the top end of the inner side of the shield; the top end of the inner side of the shield is also provided with an optical fiber fixing frame, and the distributed vibration measuring optical fiber is coiled in the optical fiber fixing frame.
2. The belt conveyor operating condition monitoring system of claim 1, wherein: the guard shield is formed by splicing and fixing a plurality of dome-shaped guard shield pieces, an edge screw hole is formed in the joint of every two guard shields, an optical fiber fixing piece is fixed at the position of the edge screw hole, a fixing buckle is arranged on the optical fiber fixing piece, and the distributed vibration measuring optical fiber penetrates through the fixing buckle to be fixed with the optical fiber fixing piece.
3. The belt conveyor operating condition monitoring system of claim 1, wherein: the optical fiber fixing frame comprises a cross concave plate, wherein the cross concave plate is fixed on the protective cover through bolts, through holes are formed in the edges of two sides of the vertical plate of the cross concave plate, and distributed vibration measuring optical fibers are coiled in the middle of the cross concave plate and extend to two sides through the through holes.
4. The belt conveyor operating condition monitoring system of claim 1, wherein: the database and the PLC main control module are also connected with belt conveyor remote supervision equipment.
5. The belt conveyor operating condition monitoring system of claim 4, wherein: the monitoring host is provided with a signal feature library, the database sends monitoring signals to the belt conveyor remote monitoring equipment for feature labeling, and the labeled feature information is returned to the signal feature library.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322575081.5U CN221092402U (en) | 2023-09-22 | 2023-09-22 | Monitoring system for running state of belt conveyor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322575081.5U CN221092402U (en) | 2023-09-22 | 2023-09-22 | Monitoring system for running state of belt conveyor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221092402U true CN221092402U (en) | 2024-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322575081.5U Active CN221092402U (en) | 2023-09-22 | 2023-09-22 | Monitoring system for running state of belt conveyor |
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| Country | Link |
|---|---|
| CN (1) | CN221092402U (en) |
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2023
- 2023-09-22 CN CN202322575081.5U patent/CN221092402U/en active Active
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