A smart pipeline conveying system and method for powdery materials and automatic monitoring.

Abstract

This invention discloses an intelligent pipeline conveying system for powdered materials and an automatic monitoring system, comprising a powder storage device, an automatic metering and conveying device, a feeding device, a double-layer pipeline conveying device, a pipeline driving device, a lubrication and cooling system, a detection system, and a powder silo. The double-layer pipeline conveying device includes an inner shell pipeline and an outer shell pipeline. Multiple spiral blades are arranged on the inner wall of the inner shell pipeline. The outer shell pipeline is shorter than the inner shell pipeline, and its end is rotatably connected to the outer wall of the inner shell pipeline via an annular rotary sealing structure. The pipeline driving device can drive the inner shell pipeline to rotate relative to the outer shell pipeline. The lubrication and cooling system includes a lubricating and cooling liquid, a liquid conveying pump, and a heat dissipation device. The detection system is arranged on one side of the double-layer pipeline conveying device. A corresponding conveying method is also disclosed. This system can be applied in scenarios where material particle size or moisture content is critical, offering good safety and ease of maintenance.

Description

Technical Field

[0001] This invention relates to the field of powder material conveying, specifically to an intelligent pipeline conveying device and method for powder material conveying and automatic monitoring. Background Technology

[0002] Traditional long-distance transportation of powdery materials typically relies on hydraulic pipelines. The conventional approach for hydraulic pipeline transportation is to prepare the powdery material into a slurry at the initial stage. This slurry must have a small particle size and a certain gradation, with an upper limit generally not exceeding 3mm. After the slurry has achieved a certain level of stability, it is then pressurized and transported by pumps to the terminal stage for dewatering. This technology consumes significant power during the initial crushing or grinding process, and the fine particles still require dewatering at the terminal stage to meet user needs. Existing technologies increase engineering investment and operating energy consumption, hindering energy conservation and carbon reduction. Furthermore, the necessary crushing and grinding to meet transportation requirements alters the physical state of the material, which is unsuitable for applications with strict particle size or moisture requirements, such as coking coal and power plant coal. Summary of the Invention

[0003] In view of the problems or defects in the prior art, the present invention aims to solve the problem that the traditional long-distance transportation of powdered materials cannot meet the application requirements in some scenarios where there are requirements for material particle size or strict moisture requirements.

[0004] The present invention provides the following solution: an intelligent pipeline conveying system for powdered materials and an automatic monitoring system, comprising: a powder storage device, an automatic metering and conveying device, a feeding device, a double-layer pipeline conveying device, a pipeline driving device, a lubrication and cooling system, a detection system, and a powder silo;

[0005] The automatic metering and conveying device is located below the powder storage device and conveys the powdered material to the inlet of the feeding device. The feeding device then feeds the powdered material into the inlet of the double-layer pipeline conveying device.

[0006] The double-layer pipe conveying device includes an inner shell pipe and an outer shell pipe. The inner shell pipe has multiple spiral blades spaced longitudinally along its inner wall. Multiple outwardly protruding ball grooves are fixedly installed on the outer wall of the inner shell pipe. Each ball groove has multiple through holes on both sides of its outer wall, and multiple balls are placed inside the groove. The outer shell pipe is fitted over the inner shell pipe and supported by the rolling balls. The outer shell pipe is shorter than the inner shell pipe, and its end is rotatably connected to the outer wall of the inner shell pipe via an annular rotary sealing structure. The pipe driving device is located on one side of the end of the inner shell pipe and can drive the inner shell pipe to rotate relative to the outer shell pipe.

[0007] The lubrication and cooling system includes a lubricating and cooling liquid, a liquid delivery pump, and a heat dissipation device; the lubricating and cooling liquid is arranged between the inner shell pipe and the outer shell pipe and is connected to the liquid delivery pump and the heat dissipation device through pipelines.

[0008] The detection system is arranged in parallel on one side of the double-layer pipeline conveying device;

[0009] The powder silo is located at the outlet of the inner shell pipe;

[0010] Furthermore, the powder storage device includes a funnel-shaped powder silo, a gate plate disposed at the bottom of the powder silo, and a vibrating feeder disposed at the outlet end of the powder storage device.

[0011] Furthermore, the automatic metering and conveying device is a metering belt scale.

[0012] Furthermore, the feeding device is a feeding funnel.

[0013] Furthermore, the pipe drive device includes a gear structure and a drive device fixed on the outer wall of the inner shell pipe.

[0014] Furthermore, the detection system includes a primary online monitoring system, a pipeline accompanying monitoring optical cable, and a secondary online monitoring system; the pipeline accompanying monitoring optical cable is arranged along one side of the double-layer pipeline conveying device and multiple sensors are arranged on it, with the primary online monitoring system and the pipeline accompanying monitoring optical cable located at both ends of the pipeline accompanying monitoring optical cable.

[0015] Furthermore, a conductive device is also provided on the outer wall of the inner shell pipe. One end of the conductive device that contacts the outer wall is a conductive metal roller. A conductive rod is provided at the central axis of the metal roller. The conductive rod is grounded to conduct the charge accumulated during the operation of the inner shell pipe to the ground.

[0016] Furthermore, a guide hopper is fixedly installed at the beginning of the inner shell pipe. The guide hopper is a hollow frustum-shaped structure with no spiral blades inside; its outer side is open, serving as an inlet for powdery materials.

[0017] Furthermore, the number N of the helical blades distributed longitudinally is determined by the following formula:

[0018]

[0019] Q: Required material conveying rate;

[0020] φ: Filling coefficient, which represents the degree of material filling in the pipeline. It is a dimensionless coefficient between 0 and 1, and its value is determined based on the operating experience of different materials.

[0021] W: Width of the helical blade;

[0022] Lbefore : Horizontal length of the helical blade;

[0023] D: Diameter of the inner shell pipe;

[0024] θ: Helix angle, the tangent of which indicates the degree of inclination of the helix;

[0025] ω: angular velocity of the helical blade;

[0026] N: The required number of spiral blades to ensure that the required conveying rate is achieved without exceeding the maximum power of the motor;

[0027] P max: Maximum power of the motor;

[0028] μ: The coefficient of friction between the material and the spiral blades, which is a dimensionless coefficient;

[0029] ρ: Density of the material;

[0030] g: acceleration due to gravity.

[0031] Furthermore, the number of the spiral blades is an even number, such as 4, 6, 8, etc., and they are evenly distributed along the longitudinal direction inside the pipe. The cross-sectional height h of the spiral blades is between 1 / 5 and 1 / 4 of the inner shell pipe R, and the cross-sectional width K of the spiral blades is 4 to 5 times the maximum particle size of the transported powdery material.

[0032] As another aspect of the present invention, a conveying method for an intelligent pipeline conveying powdery materials and an automatic monitoring system is also disclosed, comprising the following steps:

[0033] Step 1, Testing and Storage: After system installation, a no-load linkage test run is first performed. This process tests whether each system device is operating normally, especially the power unit. During the no-load operation, the operating torque and the online monitoring system's operating signals are tested to ensure they are normal. After the pipeline is operating normally, it is maintained in normal operating condition.

[0034] Step 2, Release Control: By operating the gate, the release of powdered material from the powder storage device is precisely controlled;

[0035] Step 3, feeding: Using the under-silo vibrating feeder, the released powdery material is evenly fed into the automatic metering and conveying device.

[0036] Step 4, Measurement: Use a belt scale to accurately measure the mass of the powdered material to ensure that the amount of material during the conveying process meets the predetermined requirements;

[0037] Step 5, conveying to the feed end: the metered powdered material is fed into the feed end of the double-layer pipeline conveying device through the feeding funnel;

[0038] Step Six, Pipe Rotation Drive: The inner shell pipe is driven to rotate relative to the outer shell pipe by a pipe driving device. The driving device includes a drive gear that meshes with a gear structure on the outer wall of the inner shell pipe, thereby realizing the rotation of the inner shell pipe;

[0039] Step 7, Material Conveying: During the rotation of the inner shell pipe, the powdery material is conveyed to the destination along the pipe by the spiral blades set on its inner wall;

[0040] Step 8, Lubrication and Cooling: During the transportation process, the rotating inner shell pipe is lubricated and cooled using a lubrication and cooling system to maintain the efficient operation of the system and prevent explosions or fires.

[0041] Step 9, Operational Status Monitoring: The operating status of the double-layer pipeline conveying device is continuously monitored through the detection system, including the online monitoring system and the pipeline accompanying monitoring optical cable, to ensure the stability and safety of the system. If the operation is abnormal or encounters external damage, the accompanying monitoring optical cable (10) of the dedicated pipeline will detect the signal and transmit it to the No. 1 online monitoring system or the No. 2 online monitoring system, so as to quickly locate and maintain it. During operation, the static charge generated by the inner shell pipeline during operation is conducted to the ground through the conductive device, including the metal roller and the grounded conductive rod, to prevent the accumulation of static electricity and ensure the safe operation of the system.

[0042] Step 10, Material Unloading: The powdered material delivered to the terminal station is unloaded through the powder silo.

[0043] The beneficial effects and features of this invention are:

[0044] (1) The intelligent pipeline conveying and automatic monitoring system for powdery materials of the present invention combines the advantages of traditional hydraulic pipelines and belt conveyors. It does not use water as a conveying medium, reducing water treatment costs and water waste, and also avoids the possibility of water pollution from the perspective of conveying technology; pipeline conveying can be laid underground, without occupying arable land, and the conveying process is continuous, closed, safe and efficient, and can be widely used in industries such as coal, metallurgy, construction, and mine environmental management.

[0045] (2) The intelligent pipeline conveying powdered materials and automatic monitoring system of the present invention effectively avoids the drawbacks of the initial crushing and grinding of traditional material hydraulic conveying, which increases energy consumption. It ensures stable, continuous, low-carbon, closed, green and environmentally friendly material conveying without changing the physical state of solid powdered materials. It can be applied in scenarios where there are requirements for material particle size or strict requirements for moisture content.

[0046] (3) The intelligent pipeline conveying powdered materials and automatic monitoring system of the present invention, by setting up a lubrication and cooling system and a conductive device, avoids the generation of a large amount of heat in the material during transportation and timely discharges the static charge generated during the friction process, which greatly reduces the risk of fire or explosion.

[0047] (4) The intelligent pipeline conveying powdered materials and automatic monitoring system of the present invention, through the intermittent design of multiple spiral blades, can realize modular individual repair or replacement when one of the spiral blades is damaged, thereby improving the efficiency of later maintenance. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the overall system structure of a preferred embodiment of the present invention;

[0049] Figure 2 This is a cross-sectional view of the double-layer pipeline conveying device according to a preferred embodiment of the present invention;

[0050] Figure 3 This is a three-dimensional structural diagram of the double-layer pipe conveying device according to a preferred embodiment of the present invention (part of the outer shell pipe is exposed);

[0051] Figure 4 This is a three-dimensional structural schematic diagram of a double-layer pipeline conveying device from another angle, according to a preferred embodiment of the present invention.

[0052] Figure 5 This is a three-dimensional structural schematic diagram of the conductive device according to a preferred embodiment of the present invention;

[0053] Figure 6 This is a three-dimensional structural diagram of the feed hopper according to a preferred embodiment of the present invention (only the end portion of the structure is shown);

[0054] The reference numerals in the diagram represent: 1-Powder silo, 2-Gate, 3-Vibrating feeder, 4-Metering belt scale, 5-Gear structure, 6-Drive device, 7-Inlet end, 8-Feeding funnel, 9-No. 1 online monitoring system, 10-Pipeline accompanying monitoring optical cable, 11-No. 2 online monitoring system B, 12-Powder silo, 13-Outer shell pipe, 14-Spiral blade, 15-Rolling steel ball, 16-Inner shell pipe, 17-Lubricating and cooling liquid, 18-Liquid transfer pump, 19-Heat dissipation device, 20-Ball groove, 201-Through hole, 21-Conductive device, 22-Rotary sealing structure, 23-Guide hopper. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of this invention clearer, the invention 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 merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0056] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0057] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0058] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used in relation to the direction shown in the accompanying drawings, or in relation to the vertical, perpendicular, or gravitational direction of the component itself; similarly, for ease of understanding and description, "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0059] Example 1:

[0060] Please refer to Figures 1-2 The embodiments of the present invention relate to an intelligent pipeline conveying powdered material and an automatic monitoring system, including: a powder storage device, an automatic metering and conveying device (e.g., a metering belt scale 4), a feeding device, a double-layer pipeline conveying device, a pipeline driving device, a lubrication and cooling system, a detection system, and a powder silo.

[0061] Specifically, the powder storage device includes a funnel-shaped powder silo 1, a gate 2 located at the bottom of the powder silo, and a vibrating feeder 3 located at the outlet end of the powder storage device 1; an automatic metering and conveying device is located below the powder storage device and conveys the powdered material to the inlet of the feeding device, which feeds the powdered material into the inlet end 7 of the double-layer pipeline conveying device; wherein, the feeding device can be designed as a feeding funnel 8.

[0062] Please refer to Figures 2-4 The aforementioned double-layer pipeline conveying device includes an inner shell pipeline 16 and an outer shell pipeline 13. During specific installation, various methods such as erection or burial can be selected. Multiple spiral blades 14 are arranged longitudinally on the inner wall of the inner shell pipeline 16. The arrangement of multiple spiral blades 14 at intervals facilitates the replacement and maintenance of individual spiral blades 14.

[0063] In some other embodiments, the spiral blades may be arranged without spacing, but rather connected to form a whole spiral surface, forming a conventional auger-like spiral structure.

[0064] Multiple outwardly protruding ball grooves 20 are fixedly provided on the outer wall of the inner shell pipe 16. Multiple through holes 201 are opened on the outer walls on both sides of each ball groove 17, and multiple balls 15 are arranged in the groove. The outer shell pipe 13 is sleeved on the outside of the inner shell pipe 16 and supported by the rolling balls 15. The length of the outer shell pipe 13 is shorter than the length of the inner shell pipe, and its end is rotatably connected to the outer wall of the inner shell pipe 16 through an annular rotary sealing structure 22. In some preferred embodiments, the rotary seal may include a slip ring made of polytetrafluoroethylene and a rubber O-ring that provides elasticity, which can seal a rotating or swinging motion structure. The pipe driving device is provided on one side of the end of the inner shell pipe 16, and the pipe driving device can drive the inner shell pipe 16 to rotate relative to the outer shell pipe 13.

[0065] The lubrication and cooling system includes a lubricating and cooling liquid 17, a liquid transfer pump 18, and a heat dissipation device 19. The lubricating and cooling liquid 17 is installed between the inner shell pipe and the outer shell pipe 13 and is connected to the liquid transfer pump 18 and the heat dissipation device 19 through the pipeline. The lubricating and cooling liquid 17 circulates in the pipeline and the heat dissipation device 19 removes the heat generated by the inner shell pipe 16 during operation in a timely manner, reducing the possibility of fire and ensuring operational safety.

[0066] The detection system is arranged in parallel on one side of the double-layer pipeline conveying device to automatically monitor and quickly locate the operating status of the double-layer pipeline conveying device or accidental external damage. Specifically, the detection system includes a first online monitoring system 9, a pipeline accompanying monitoring optical cable 10, and a second online monitoring system 11. The pipeline accompanying monitoring optical cable 10 is arranged along one side of the double-layer pipeline conveying device and multiple sensors are arranged on it. The first online monitoring system 9 and the pipeline accompanying monitoring optical cable 10 are located at both ends of the pipeline accompanying monitoring optical cable 10.

[0067] The powder silo 12 is located at the outlet of the inner shell pipe 16 and is used to receive the materials transported by the double-layer pipe conveying device through the screw conveyor.

[0068] The pipeline drive device includes a gear structure 5 fixed on the outer wall of the inner shell pipeline 16 and a drive device 6, such as an electric motor or diesel engine. The drive device is equipped with a drive gear that cooperates with the gear structure 5. It also includes a hydraulic coupling device, which can effectively protect the dedicated drive device during the process of stopping and restarting when the material is fully loaded.

[0069] In the above embodiments, the number N of spiral blades distributed longitudinally can be determined by the following formula:

[0070]

[0071] Q: Required material conveying rate;

[0072] φ: Filling coefficient, which represents the degree of material filling in the pipeline. It is a dimensionless coefficient between 0 and 1, and its value is determined based on the operating experience of different materials.

[0073] W: Width of the helical blade;

[0074] L before : Horizontal length of the helical blade;

[0075] D: Diameter of the inner shell pipe;

[0076] θ: Helix angle, the tangent of which indicates the degree of inclination of the helix;

[0077] ω: angular velocity of the helical blade;

[0078] N: The required number of spiral blades to ensure that the required conveying rate is achieved without exceeding the maximum power of the motor;

[0079] P max: Maximum power of the motor;

[0080] μ: The coefficient of friction between the material and the spiral blades, which is a dimensionless coefficient;

[0081] ρ: Density of the material;

[0082] g: acceleration due to gravity.

[0083] Based on actual operating experience, the number of spiral blades 14 can be an even number, such as 4, 6, 8, etc., and they are evenly distributed spirally along the longitudinal direction inside the pipe. The cross-sectional height h of the spiral blades 14 is between 1 / 5 and 1 / 4 of the inner shell pipe R, and the cross-sectional width K of the spiral blades 14 is 4 to 5 times the maximum particle size of the transported powdery material. Their cross-sectional parameters are as follows: Figure 2 As shown.

[0084] Example 2:

[0085] Please refer to Figure 5 As a preferred embodiment, in some other embodiments, unlike embodiment 1, a conductive device 21 is also provided on the outer wall of the inner shell pipe 16. One end of the conductive device that contacts the outer wall is a conductive metal roller 211. A conductive rod 212 is provided at the central shaft of the metal roller. The conductive rod 212 is grounded, so that the charge accumulated by the friction between the powder and the spiral blade during the operation of the inner shell pipe 16 is conducted to the ground, reducing the possibility of fire and explosion.

[0086] Example 3:

[0087] Please refer to Figure 6As a preferred embodiment, in some other embodiments, unlike embodiment 1, a guide hopper 23 is fixedly provided at the first end of the inner shell pipe 16. The guide hopper 23 is a hollow frustum structure that is inclined inward from left to right (the inclination facilitates the material to slide down to the inlet of the inner shell pipe 16). The guide hopper 23 does not have spiral blades inside, which reduces the possibility of interference between the feeding funnel and the spiral blades; its outer side is open, serving as the inlet for powdery materials.

[0088] Example 4:

[0089] As a preferred embodiment, in some other embodiments, unlike Embodiment 1, a dust collection hood can also be installed around the perimeter of the powder silo. The dust collection hood and the powder silo form a closed dust collection space to capture dust generated during material unloading or storage. The lower end of the dust collection hood is connected to a dust filtration device, which includes one or more high-efficiency filters and a dust collection container, for collecting and filtering dust within the dust collection space to ensure that dust is not emitted into the external environment.

[0090] Example 5:

[0091] As a preferred embodiment, in some other embodiments, unlike Embodiment 1, the wear of the spiral blades near the discharge port is more severe than that near the inlet due to the impact and sliding friction of the material on the blades. In some embodiments, a wear-resistant coating and wear-resistant welding rods can be added to the blade edges; the spiral blades can also be divided into a front section and a rear section, with the front section using a first type of spiral blade and the rear section using a second type of spiral blade. The first type of spiral blade has a smaller pitch and a larger tilt angle; the second type of spiral blade has a larger pitch and a smaller tilt angle. The second type of spiral blade is used to gently convey the material in the later stages of conveying, reducing material breakage and wear of the spiral blades near the discharge port.

[0092] As another aspect of the present invention, a conveying method for an intelligent pipeline conveying powdery materials and an automatic monitoring system is also provided, comprising the following steps:

[0093] Step 1, Testing and Storage: After system installation, a no-load linkage test run is first performed. This process tests whether each system device is operating normally, especially the power unit. During the no-load operation, the operating torque and the online monitoring system's operating signals are tested to ensure they are normal. After the pipeline is operating normally, it is maintained in normal operating condition.

[0094] Step 2, Release Control: By operating the gate 2, the release of powdered material from the powder storage device 1 is precisely controlled;

[0095] Step 3, feeding: Using the under-silo vibrating feeder 3, the released powdery material is evenly fed into the automatic metering and conveying device;

[0096] Step 4, Measurement: Use a measuring belt scale 4 to accurately measure the mass of the powdered material to ensure that the amount of material during the conveying process meets the predetermined requirements;

[0097] Step 5, conveying to the feed end: the metered powdered material is fed into the feed end 7 of the double-layer pipeline conveying device through the feed funnel 8;

[0098] Step 6, Pipe rotation drive: The inner shell pipe 16 is driven to rotate relative to the outer shell pipe 13 by the pipe drive device 6. The drive device includes a drive gear that meshes with the gear structure 5 on the outer wall of the inner shell pipe 16, thereby realizing the rotation of the inner shell pipe;

[0099] Step 7, Material conveying: During the rotation of the inner shell pipe 16, the powdered material is conveyed to the destination along the pipe by the spiral blades 14 set on its inner wall;

[0100] Step 8, Lubrication and Cooling: During the transportation process, the rotating inner shell pipe 16 is lubricated and cooled by the lubrication and cooling system to maintain the efficient operation of the system and prevent explosion or fire.

[0101] Step 9, Operational Status Monitoring: The operational status of the double-layer pipeline conveying device is continuously monitored through the detection system, including the online monitoring system and the pipeline accompanying monitoring optical cable, to ensure the stability and safety of the system. During operation, the static charge generated by the inner shell pipeline 16 during operation is conducted to the ground through the conductive device 21, including the metal roller 211 and the grounded conductive rod 212, to prevent static electricity accumulation and ensure the safe operation of the system.

[0102] During normal operation, after the pipeline runs normally under no-load conditions, materials are slowly added; after the materials are emptied, a planned shutdown is carried out.

[0103] In abnormal operating conditions, when the pipeline is under heavy load, continuous feeding should be stopped; the hydraulic coupling system should be used to ensure that the system is not overloaded, and after maintenance is completed and the material is emptied, a planned shutdown should be carried out.

[0104] Step 10, Material Unloading: The powdered material delivered to the terminal station is unloaded through the powder silo 12.

[0105] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An intelligent pipeline conveying system for powdery materials and an automatic monitoring system, characterized in that, include Powder storage device, automatic metering and conveying device, feeding device, double-layer pipeline conveying device, pipeline drive device, lubrication and cooling system, detection system and No. 2 powder silo (12). The automatic metering and conveying device is located below the powder storage device and conveys the powdered material to the inlet of the feeding device. The feeding device sends the powdered material into the inlet end (7) of the double-layer pipeline conveying device. The double-layer pipe conveying device includes an inner shell pipe (16) and an outer shell pipe (13); the inner shell pipe (16) has multiple spiral blades (14) arranged longitudinally on its inner wall; multiple outwardly protruding ball grooves (20) are fixedly arranged on the outer wall of the inner shell pipe (16), and multiple through holes (201) are opened on the outer walls on both sides of each ball groove (20) and multiple balls (15) are arranged in the groove; the outer shell pipe (13) is sleeved on the outside of the inner shell pipe (16) and supported by the rolling balls (15); the length of the outer shell pipe (13) is shorter than the length of the inner shell pipe, and its end is rotatably connected to the outer wall of the inner shell pipe (16) through an annular rotary sealing structure (22); the pipe driving device is arranged on one side of the end of the inner shell pipe (16), and the pipe driving device can drive the inner shell pipe (16) to rotate relative to the outer shell pipe (13); The lubrication and cooling system includes a lubricating and cooling liquid (17), a liquid transfer pump (18), and a heat dissipation device (19); the lubricating and cooling liquid (17) is arranged between the inner shell pipe and the outer shell pipe (13) and is connected to the liquid transfer pump (18) and the heat dissipation device (19) through the pipeline; The detection system is located on one side of the double-layer pipeline conveying device; The No. 2 powder silo (12) is located at the outlet of the inner shell pipe (16); The detection system includes a No. 1 online monitoring system (9), a pipeline accompanying monitoring optical cable (10), and a No. 2 online monitoring system (11). The pipeline accompanying monitoring optical cable (10) is arranged along one side of the double-layer pipeline conveying device and multiple sensors are arranged on it. The No. 1 online monitoring system (9) and the pipeline accompanying monitoring optical cable (10) are located at both ends of the pipeline accompanying monitoring optical cable (10). A conductive device (21) is also provided on the outer wall of the inner shell pipe (16). One end of the conductive device that contacts the outer wall is a conductive metal roller (211). A conductive rod (212) is provided at the central axis of the metal roller. The conductive rod (212) is grounded and conducts the charge accumulated in the inner shell pipe (16) during operation to the ground.

2. The intelligent pipeline conveying and automatic monitoring system for powdery materials according to claim 1, characterized in that, The powder storage device includes a funnel-shaped No. 1 powder silo (1), a gate (2) located at the bottom of the No. 1 powder silo (1), and a vibrating feeder (3) located at the outlet end of the No. 1 powder silo (1).

3. The intelligent pipeline conveying and automatic monitoring system for powdery materials according to claim 1, characterized in that, The automatic metering and conveying device is a metering belt scale (4).

4. The intelligent pipeline conveying and automatic monitoring system for powdery materials according to claim 1, characterized in that, The pipeline drive device includes a gear structure (5) fixed on the outer wall of the inner shell pipeline (16) and a drive device (6), and the drive device is provided with a drive gear that cooperates with the gear structure (5).

5. The intelligent pipeline conveying and automatic monitoring system for powdery materials according to claim 1, characterized in that, The inner shell pipe (16) is also fixedly provided with a guide hopper (23). The guide hopper (23) is a hollow frustum structure with no spiral blades inside; its outer side is open, serving as the inlet for powdery materials.

6. The intelligent pipeline conveying and automatic monitoring system for powdery materials according to claim 1, characterized in that, The number N of the longitudinally distributed helical blades is determined by the following formula: ， Q: Required material conveying rate; The filling factor represents the degree of material filling in the pipeline. It is a dimensionless coefficient between 0 and 1, and its value is determined based on the operating experience of different materials. W: Width of the helical blade, that is, the radial length of the helical blade after its helical surface is unfolded into an arc surface; L before : Horizontal length of the helical blade; D: Diameter of the inner shell pipe; θ: Helix angle, the tangent of which indicates the degree of inclination of the helix; ω: Angular velocity of the propeller blade; N: The required number of spiral blades to ensure that the required conveying rate is achieved without exceeding the maximum power of the motor; P max: Maximum power of the motor; μ: The coefficient of friction between the material and the helical blades, which is a dimensionless coefficient; ρ: Density of the material; g: acceleration due to gravity.

7. The intelligent pipeline conveying and automatic monitoring system for powdery materials according to claim 1, characterized in that, The number of the spiral blades (14) is an even number of 4, 6, 8... and they are evenly distributed along the longitudinal direction inside the pipe. The cross-sectional height h of the spiral blades (14) is between 1 / 5 and 1 / 4 of the inner shell pipe R, and the cross-sectional width K of the spiral blades (14) is 4 to 5 times the maximum particle size of the transported powdery material.

8. A conveying method for powdery materials via intelligent pipeline and an automatic monitoring system, characterized in that, Includes the following steps: Step 1, Testing and Storage: After the system is installed, a no-load linkage test run is first performed. This process tests whether each system device is operating normally, especially the power unit. During the no-load operation, the operating torque and the online monitoring system's operating signals are tested to ensure they are normal. After the pipeline is operating normally, it is kept in normal operating condition. The powdered material to be conveyed is placed in a powder storage device (1), which is funnel-shaped to ensure smooth flow of the material; Step 2, release control: By operating the gate (2), the release of powdered material from the powder storage device (1) is precisely controlled; Step 3, feeding: Using the under-silo vibrating feeder (3), the released powdery material is evenly fed into the automatic metering and conveying device; Step 4, Measurement: Use a measuring belt scale (4) to accurately measure the mass of the powdered material to ensure that the amount of material in the conveying process meets the predetermined requirements; Step 5, conveying to the feed end: the metered powdered material is fed into the feed end (7) of the double-layer pipeline conveying device through the feeding funnel (8); Step 6, pipe rotation drive: drive the inner shell pipe (16) to rotate relative to the outer shell pipe (13) by the pipe drive device (6); the drive device includes a drive gear that meshes with the gear structure (5) on the outer wall of the inner shell pipe (16), thereby realizing the rotation of the inner shell pipe; Step 7, material conveying: During the rotation of the inner shell pipe (16), the powdered material is conveyed to the destination along the pipe by the spiral blades (14) set on its inner wall; Step 8, Lubrication and Cooling: During the transport process, the rotating inner shell pipe (16) is lubricated and cooled using a lubrication and cooling system to maintain the efficient operation of the system and prevent explosion or fire; Step 9, Operational Status Monitoring: The operation status of the double-layer pipeline conveying device is continuously monitored through the detection system, including the online monitoring system and the pipeline accompanying monitoring optical cable, to ensure the stability and safety of the system. During operation, the static charge generated by the inner shell pipeline (16) during operation is conducted to the ground through the conductive device (21), including the metal roller (211) and the grounded conductive rod (212), to prevent static electricity accumulation and ensure the safe operation of the system. Step 10, material unloading: The powdered material delivered to the terminal station is unloaded through the No. 2 powder silo (12).

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