Tubular belt conveyor anti-explosion tube detection method

Abstract

The invention discloses an anti-explosion tube detection method for a tubular belt conveyor, which relates to the technical field of tubular belt conveyors and comprises the following steps: collecting empty belt information and belt material information of a conveying belt through a laser scanner; calculating the scanning area of each point; an error adjustment value is set, and strip information is calculated; the radius r is calculated through the strip information; 2 < r > is compared with the inner diameter D of the tubular belt conveyor, if 2 < r > is larger than D and larger than a set protection value, it is indicated that the tubular belt conveyor is extremely prone to pipe explosion accidents, and shutdown treatment is conducted immediately; if 2r is larger than D but smaller than a set protection value, an alarm is given to prompt key attention; and if 2r is less than D, continuously operating without processing. According to the invention, the conveying material information of the tubular belt conveyor can be collected in real time, whether the tubular belt conveyor has a tube explosion phenomenon is analyzed and judged, and maintenance personnel are reminded to track and process in time.

Description

Technical Field

[0001] The invention relates to the technical field of tubular belt conveyors, in particular to a method for detecting explosion-proof pipes of tubular belt conveyors. Background Art

[0002] At present, belt conveyors are widely used in the fields of electricity, steel, coal, water conservancy, chemical industry, metallurgy, building materials, etc. Among the belt conveyor series, tubular belt conveyors have been more widely used in various industries due to their advantages of closed transportation, flexible layout, and environmental protection.

[0003] A tubular belt conveyor is a belt conveyor that uses rollers to roll the conveyor belt into a circular tube with overlapping edges for conveying. Normally, the material filling rate of a tubular belt conveyor is required not to exceed 75% of the tube diameter. However, if there are large pieces of material or the instantaneous material volume is too large, the filling rate may exceed the standard, making it difficult to overlap the edges of the conveyor belt, which can easily lead to a pipe burst. A pipe burst in a tubular belt conveyor will cause deformation of the frame, damage to the rollers and the conveyor belt, and even cause the conveyor belt to break and other malignant accidents, posing a serious hidden danger to the safe, efficient and reliable operation of the equipment.

[0004] Most existing judgment methods use mechanical switch sensors installed close to the tubular conveyor belt. When the conveyor belt bursts, the conveyor belt touches the mechanical switch to activate the switch, and at the same time, the signal is transmitted to the control system for identification and judgment. However, this method has problems such as mechanical switches being easily damaged, signals being easily interfered, poor reliability, and high installation precision requirements.

[0005] Therefore, developing a non-contact judgment method to monitor the conveyed material information in real time and determine whether a tubular belt conveyor has burst can effectively avoid the problems existing in the contact method. It has important practical significance for reducing the number of accidents, extending the service life of equipment, improving system operation efficiency, and reducing enterprise operation and maintenance costs. Summary of the invention

[0006] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a method for detecting explosion-proof pipes of tubular belt conveyors, which collects the conveying material information of the tubular belt conveyors in real time, analyzes and determines whether the tubular belt conveyors have pipe explosions, and reminds maintenance personnel to track and handle them in time.

[0007] The object of the present invention is achieved through the following technical scheme: a method for detecting explosion-proof pipes of tubular belt conveyors, the detection method comprising the following steps:

[0008] S1. Set the laser scanner scanning information.

[0009] S2. Collect the empty belt information of the tubular belt conveyor through a laser scanner.

[0010] S3. Collect the belt material information of the tubular belt conveyor through a laser scanner.

[0011] S4. The laser scanner calculates the scanning area of ​​each point.

[0012] S5. Set the error adjustment value, and calculate the tape information by subtracting the scanning area of ​​each point from the empty tape information and then subtracting the error adjustment value.

[0013] S6. Calculate the radius r through the material information.

[0014] S7. Compare 2r with the inner diameter D of the tubular belt conveyor. If 2r>D and is greater than the set protection value, it means that the tubular belt conveyor is very prone to pipe bursting and should be shut down immediately for processing. If 2r>D but is less than the set protection value, an alarm will be issued to prompt special attention. If 2r<D, the conveyor will continue to run without any processing.

[0015] In step S1, the scanning accuracy and scanning angle of the laser scanner are set.

[0016] In step S4, the laser scanner calculates the scanning area of ​​each point according to the scanning accuracy and scanning angle, and uses S1, S2, ..., S N express.

[0017] In step S5, the error adjustment value S is set. W , empty tape information is defined as S, and material tape information is defined as S 物 , calculate S 物 =S-S1-S2-…-S N -S W .

[0018] In step S6, the formula S 物 =πr 2 Calculate the radius r.

[0019] In the step S2, the empty tape data collected by the laser scanner is subjected to noise reduction processing, and in the step S3, the material tape data collected by the laser scanner is subjected to noise reduction processing to improve data quality, reduce errors, and enhance accuracy. The redundancy of the data after noise reduction is reduced, and it is easier to perform efficient data compression, which can reduce the demand for storage space and transmission bandwidth while ensuring data quality.

[0020] The laser scanner is arranged above the conveyor belt.

[0021] The laser scanner communicates signals with the main control center. Alarms are installed beside the conveyor belt and in the main control center. The alarm beside the conveyor belt reminds on-site personnel to check in time, and the alarm in the main control center reminds the operating personnel to pay special attention.

[0022] The beneficial effects of the present invention are:

[0023] 1. The present invention collects the conveying material information of the tubular belt conveyor in real time, analyzes and determines whether the tubular belt conveyor has a pipe burst phenomenon, and reminds maintenance personnel to track and handle it in time.

[0024] 2. The present invention completely replaces manual inspections, avoids the drawbacks of personnel operations, improves system operation efficiency, extends equipment service life, and reduces enterprise operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of empty tape collection of the present invention;

[0026] Figure 2 It is a schematic diagram of strip material collection of the present invention;

[0027] Figure 3 It is a schematic diagram of the conveyor belt being rolled into a tube;

[0028] Figure 4 It is a flow chart of the present invention. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] In one embodiment of the present application:

[0032] like Figures 1 to 4 As shown, a method for detecting explosion-proof pipes of tubular belt conveyors comprises the following steps:

[0033] S1. Set the scanning accuracy and scanning angle of the laser scanner, and place the laser scanner just above the conveyor belt in the unfolded section.

[0034] S2. Collect the empty belt information of the tubular belt conveyor through a laser scanner, the empty belt information is defined as S, and perform noise reduction processing on the empty belt data collected by the laser scanner.

[0035] S3. Collect the belt material information of the tubular belt conveyor through the laser scanner. The belt material information is defined as S 物 , and perform noise reduction on the strip data collected by the laser scanner.

[0036] S4, laser scanner calculates the scanning area of ​​each point according to the scanning accuracy and scanning angle, and uses S1, S2, ..., S N express.

[0037] S5. Set the error adjustment value S W , calculate the tape information S by subtracting the scan area of ​​each point from the empty tape information and then subtracting the error adjustment value 物 =S-S1-S2-…-S N -S W .

[0038] S6, through formula S 物 =πr 2 Calculate the radius r and take π as 3.14.

[0039] S7. The laser scanner communicates with the main control center through signals. Alarms are installed beside the conveyor belt and in the main control center. 2r is compared with the inner diameter D of the tubular belt conveyor. If 2r>D and is greater than the set protection value (the set protection value is a value set according to the needs of the staff), it means that the tubular belt conveyor is very prone to pipe burst accidents and the machine should be shut down immediately for processing; if 2r>D but less than the set protection value, the alarm will sound an alarm to remind people to pay special attention; if 2r<D, it will continue to run without any processing.

[0040] Since the tubular belt conveyor is a slightly curved conveyor belt that is slowly rolled into a tubular conveyor belt, Figure 3 As shown, in order to prevent the conveyor belt from bursting after being rolled into a tube, it is necessary to detect the radius and arc length of the conveyor belt before rolling in advance, and due to the weight of the conveyor belt itself, the middle part of the conveyor belt will sag and bend due to gravity, so it cannot be laid flat. The cross-section of the conveyor belt is concave, and this shape can also hold more materials. The laser scanner is used to calculate the area of ​​the conveyor belt after loading materials, and it is inferred whether the conveyor belt loaded with materials will burst after being rolled into a tube, thereby reducing or even avoiding the occurrence of burst accidents, replacing manual inspections, avoiding the disadvantages of personnel operations, improving system operation efficiency, extending equipment service life, and reducing enterprise operation and maintenance costs.

[0041] The above is only an embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art shall not deviate from the spirit and scope of the present invention, and shall be within the scope of protection of the claims attached to the present invention.

Claims

1. A method for detecting explosion-proof pipes of tubular belt conveyors, characterized in that: The following steps are involved: S1. Setting the laser scanner scanning information; S2, collecting empty belt information of the conveyor belt of the tubular belt conveyor through a laser scanner; S3, collecting material information of the conveyor belt of the tubular belt conveyor through a laser scanner; S4, the laser scanner calculates the scanning area of ​​each point; S5. Set the error adjustment value, and calculate the tape information by subtracting the scanning area of ​​each point from the empty tape information and then subtracting the error adjustment value; S6. Calculate the radius r through the material information; S7. Compare 2r with the inner diameter D of the tubular belt conveyor. If 2r>D and is greater than the set protection value, it means that the tubular belt conveyor is very prone to pipe bursting and should be shut down immediately for processing. If 2r>D but is less than the set protection value, an alarm will be issued to prompt special attention. If 2r<D, the conveyor will continue to run without any processing.

2. A method for detecting explosion-proof pipes of tubular belt conveyors according to claim 1, characterized in that: In step S1, the scanning accuracy and scanning angle of the laser scanner are set.

3. A method for detecting explosion-proof pipes of tubular belt conveyors according to claim 2, characterized in that: In step S4, the laser scanner calculates the scanning area of ​​each point according to the scanning accuracy and scanning angle, and uses S1, S2, ..., S N express.

4. A method for detecting explosion-proof pipes of tubular belt conveyors according to claim 3, characterized in that: In step S5, the error adjustment value S is set. W , empty tape information is defined as S, and material tape information is defined as S 物 , calculate S 物 =S-S1-S2-…-S N -S W .

5. A method for detecting explosion-proof pipes of tubular belt conveyors according to claim 4, characterized in that: In step S6, the formula S 物 =πr 2 Calculate the radius r.

6. A method for detecting explosion-proof pipes of tubular belt conveyors according to claim 1, characterized in that: In the step S2, noise reduction processing is performed on the empty band data collected by the laser scanner.

7. A method for detecting explosion-proof pipes of tubular belt conveyors according to claim 1, characterized in that: In the step S3, noise reduction processing is performed on the strip data collected by the laser scanner.

8. A method for detecting explosion-proof pipes of tubular belt conveyors according to claim 1, characterized in that: The laser scanner is arranged above the conveyor belt.

9. A method for detecting explosion-proof pipes of tubular belt conveyors according to claim 1, characterized in that: An alarm is arranged beside the conveyor belt.

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