An experimental device for high-speed friction heat detection of bulk particles

Abstract

The present invention relates to the technical field of detection mechanisms, specifically to an experimental device for detecting high-speed friction heat of bulk particles. The detection mechanism is arranged in an experimental bench and is located below the friction mechanism. A material barrel is fixed in the experimental bench. A bottom plate is provided in the material barrel to separate the interior of the material barrel into a storage space with a top opening and an exhaust space. The bottom plate is provided with multiple air holes. The exhaust space outlet is connected to an exhaust element. At least three temperature measuring elements are respectively arranged in the storage space near the opening end, in the storage space near the bottom plate, and in the exhaust space near the outlet. When the abrasive disc contacts the bulk particles in the storage space, friction heat is generated between the abrasive disc and the bulk particles through rotation. This solves the problem in the prior art that the high-speed flow of different bulk materials during loading, unloading, transportation, and storage at ports and the relative movement with operating equipment generate friction heat transfer patterns that are difficult to detect.

Description

Technical Field

[0001] The present invention relates to the technical field of detection mechanisms, and in particular to a high-speed friction heat detection experimental device for bulk particles. Background Art

[0002] Ports are hubs of water and land transportation. As places for loading, unloading, handling, storage and processing of goods, ports play the role of key nodes in the entire transportation chain. More than 85% of import and export goods need to pass through ports. In addition, the existing patent document with patent application number 202121340591.9 discloses a direct-unloading loader for bulk cargo, which can realize the transshipment of bulk cargo.

[0003] However, in the existing technology, with the continuous expansion of industrial production volume and speed, bulk cargo flows at high speed during loading, unloading, transportation and storage at the port, generating friction with the relative movement of the operating equipment and forming local high temperatures at the point of action. Frictional heat can easily lead to problems such as thermal decay, thermal cracks and material wear of the operating equipment. The transfer law of frictional heat generated by the relative movement of different bulk cargo materials and operating equipment is inconvenient to detect, which seriously restricts the safe and efficient operation of bulk cargo transportation at the port. Summary of the Invention

[0004] The purpose of the present invention is to overcome the above-mentioned technical deficiencies and provide a high-speed friction heat detection experimental device for bulk cargo particles, so as to solve the problem in the prior art that the transfer law of friction heat generated by the high-speed flow of different bulk cargo materials during loading, unloading, transportation and storage at the port and the relative movement with the operating equipment is inconvenient to detect.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] The present invention provides a bulk particle high-speed friction heat detection experimental device, comprising

[0007] Experimental bench;

[0008] The friction mechanism is movably arranged inside the experimental bench and includes an abrasive disc that can rotate around its own axis;

[0009] a loading mechanism, which is disposed in the experimental bench and connected to the friction mechanism, and is used to adjust the vertical downward pressure of the abrasive disc; and

[0010] The detection mechanism is arranged in the experimental bench and is located below the friction mechanism. It includes a material barrel, a temperature measuring component and an exhaust component. The material barrel is fixed in the experimental bench. A bottom plate is provided in the material barrel to divide the interior of the material barrel into a storage space with a top opening and an exhaust space. A plurality of air holes are provided on the bottom plate. The air outlet of the exhaust space is connected to the exhaust component. At least three temperature measuring components are respectively arranged in the storage space near the open end, in the storage space near the bottom plate and in the exhaust space near the air outlet. When the abrasive disc contacts the bulk particles in the storage space, friction heat is generated between the rotation of the abrasive disc and the bulk particles.

[0011] In some embodiments, the friction mechanism includes a support plate that is slidably arranged within the experimental bench, and a driving member fixedly connected to the support plate, the output end of the driving member is fixedly connected to the abrasive disc, and the driving member is used to drive the abrasive disc to rotate around its own central axis.

[0012] In some embodiments, slide rails are provided on opposite sides of the experimental bench along the height direction, and sliders matching the two slide rails are provided on opposite sides of the support plate.

[0013] In some embodiments, the driving member includes a bracket, a reduction motor, a coupling, a stepped shaft and a connecting plate. The bracket is fixed on the support plate, the reduction motor is fixedly connected to the bracket, the output end of the reduction motor is fixedly connected to one end of the stepped shaft via the coupling, the other end of the stepped shaft is fixedly connected to the connecting plate, and the connecting plate is fixedly connected to the abrasive plate.

[0014] In some embodiments, the two loading mechanisms are located on opposite sides of the driving member, and the two loading mechanisms have the same structure. The loading mechanism includes a roller, a connecting rope and a counterweight block that are rotatably arranged on the top of the experimental bench. One end of the connecting rope is connected to the counterweight block, and the connecting rope passes around the roller and the other end is connected to the support plate to adjust the vertical downward pressure of the abrasive disc by increasing or decreasing the mass of the counterweight block.

[0015] In some embodiments, three of the temperature measuring components are arranged at intervals in a plane of the accommodating space close to the opening end, in a plane of the accommodating space close to the bottom plate, and in a plane of the exhaust space close to the air outlet, and the interval between two adjacent temperature measuring components in the same plane is 120°.

[0016] In some embodiments, the plane where the tops of the bulk particles in the accommodating space are located is higher than a plane where the three temperature measuring components are located near the opening end of the accommodating space.

[0017] In some embodiments, the counterweight may be a weight.

[0018] In some embodiments, each of the temperature measuring components is a thermocouple thermometer.

[0019] In some embodiments, the inner wall of the material barrel is provided with a heat insulation layer.

[0020] Compared with the prior art, the present invention provides a high-speed friction heat detection experimental device for bulk particles, which is fixed in an experimental bench through a material barrel. The material barrel is provided with a bottom plate that divides the interior of the material barrel into a storage space with a top opening and an exhaust space. The bottom plate is provided with multiple air holes, and the air outlet of the exhaust space is connected to the exhaust component. At least three temperature measuring components are respectively arranged in the storage space near the opening end, in the storage space near the bottom plate, and in the exhaust space near the air outlet. When the abrasive disk contacts the bulk particles in the storage space, friction heat is generated between the rotation of the abrasive disk and the bulk particles. By converting the relative motion of the bulk and the operating equipment, the rotating abrasive disk is used to contact the stationary bulk particle sample to simulate the friction motion between the two. The contact pressure between the abrasive disk and the bulk particle sample is simulated and adjusted by the loading mechanism. The exhaust component exhausts air from the exhaust space to simulate the air convection in the gap between the bulk particle samples. The temperature measuring component records the temperature changes at different positions of the bulk particle sample to analyze the heat transfer law between different bulk particle samples. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic structural diagram of a high-speed friction heat detection experimental device for bulk particles provided by the present invention;

[0022] Figure 2 This is a front view of an experimental device for high-speed friction heat detection of bulk particles according to the present invention;

[0023] Figure 3 It is a structural schematic diagram of the friction mechanism and the loading mechanism of the present invention;

[0024] Figure 4 Schematic diagram of the internal structure of the material barrel of the present invention;

[0025] Figure 5 It is a top view of the material barrel of the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present 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 only used to explain the present invention and are not intended to limit the present invention.

[0027] See also Figures 1 to 5The present invention provides an experimental device for detecting high-speed frictional heat in bulk cargo particles. This device is primarily used to simulate the high-speed flow of various bulk cargoes during port loading, unloading, transportation, and storage, generating friction with operating equipment, and to detect the heat transfer patterns between different bulk cargo particle samples.

[0028] In this specific embodiment, a bulk particle high-speed friction heat detection experimental device includes an experimental bench 1, a friction mechanism 2, a loading mechanism 3 and a detection mechanism 4. The friction mechanism 2 is movably arranged inside the experimental bench 1, and includes an abrasive disc 20 that can rotate around its own axis; the loading mechanism 3 is arranged in the experimental bench 1 and is connected to the friction mechanism 2, and is used to adjust the vertical downward pressure of the abrasive disc 20; the detection mechanism 4 is arranged in the experimental bench 1 and is located below the friction mechanism 2, and includes a material barrel 41, a temperature measuring component 42 and an exhaust component 43. The material barrel 41 is fixed in the experimental bench 1, and the A bottom plate 410 is provided in the material barrel 41, which divides the interior of the material barrel 41 into a storage space 41a with a top opening and an exhaust space 41b. The bottom plate 410 is provided with multiple air holes, and the air outlet of the exhaust space 41b is connected to the exhaust component 43. At least three temperature measuring components 42 are respectively arranged in the storage space 41a near the open end, in the storage space 41a near the bottom plate 410 and in the exhaust space 41b near the air outlet. When the abrasive disc 20 contacts the bulk particles in the storage space 41a, friction heat is generated between the rotation of the abrasive disc 20 and the bulk particles.

[0029] During actual use, the bulk material sample is first loaded into the material barrel 41, and it is ensured that the height of the top surface of the bulk material sample is higher than the height of the plane of the temperature measuring component 42 near the open end in the accommodating space 41a. The bulk material sample in the material barrel 41 is compacted by the abrasive disc 20, and the pressure between the abrasive disc 20 and the bulk material sample in the material barrel 41 is adjusted by the loading mechanism 3. The rotation of the abrasive disc 20 and the contact surface with the bulk material sample generates friction heat. The exhaust component 43 exhausts the exhaust space 41b to simulate the air convection in the gap between the bulk particle samples. The three temperature measuring components 42 detect the temperature changes in different parts, thereby deducing the heat transfer law in each sample.

[0030] In this specific embodiment, the experimental bench 1 is not limited to a specific structure, as long as it can facilitate the installation of the friction mechanism 2, the loading mechanism 3 and the detection mechanism 4, and no further details are given here.

[0031] In this specific embodiment, the friction mechanism 2 includes a support plate 21 slidably arranged in the experimental bench 1, and a driving member 22 fixedly connected to the support plate 21, the output end of the driving member 22 is fixedly connected to the abrasive disc 20, and the driving member 22 is used to drive the abrasive disc 20 to rotate around its own central axis.

[0032] It should be noted that the driving member 22 is not limited to a specific structure, as long as it can drive the abrasive disc 20 to rotate around its own central axis, and no other limitations are made here.

[0033] Specifically, the driving member 22 includes a bracket 221, a reduction motor 222, a coupling 223, a stepped shaft 224 and a connecting plate 225. The bracket 221 is fixed on the support plate 21, and the reduction motor 222 is fixedly connected to the bracket 221. The output end of the reduction motor 222 is fixedly connected to one end of the stepped shaft 224 via the coupling 223, and the other end of the stepped shaft 224 is fixedly connected to the connecting plate 225, and the connecting plate 225 is fixedly connected to the abrasive disc 20.

[0034] Based on the above solution, the experimental bench 1 is provided with slide rails 10 on opposite sides along the height direction, and the support plate 21 is provided with sliders 210 on opposite sides of the two slide rails 10. The two sliders 210 cooperate with the two slide rails 10 to ensure the stability of the support plate 21 when sliding up and down.

[0035] In this specific embodiment, the two loading mechanisms 3 are respectively located on opposite sides of the driving member 22, and the two loading mechanisms 3 have the same structure. The loading mechanism 3 includes a roller 31 rotatably arranged on the top of the experimental bench 1, a connecting rope 32 and a counterweight 33. One end of the connecting rope 32 is connected to the counterweight 33, and the connecting rope 32 passes around the roller 31 and the other end is connected to the support plate 21 to adjust the vertical downward pressure of the abrasive disc 20 by increasing or decreasing the mass of the counterweight 33.

[0036] It should be noted that the counterweight block 33 can be a weight, and the vertical downward pressure of the abrasive disc 20 can be adjusted by increasing or decreasing the mass of the weight. That is, when the mass of the counterweight block 33 is smaller, the vertical downward pressure of the abrasive disc 20 is greater. Conversely, when the mass of the counterweight block 33 is larger, the vertical downward pressure of the abrasive disc 20 is smaller.

[0037] In this specific embodiment, two through holes are spaced apart on the support plate 21 , and the two connecting ropes 32 of the two loading mechanisms 3 are movably passed through the two through holes in the support plate 21 .

[0038] In one embodiment, three temperature measuring components 42 are arranged at intervals in a plane of the accommodating space 41a close to the opening end, in a plane of the accommodating space 41a close to the bottom plate 410, and in a plane of the exhaust space 41b close to the air outlet, and the interval between two adjacent temperature measuring components 42 in the same plane is 120°.

[0039] In this embodiment, each of the temperature measuring elements 42 is a thermocouple thermometer. By installing a total of nine temperature measuring elements 42 at three different heights, it is possible to detect the temperature of bulk material samples at different heights. Three temperature measuring elements 42 spaced apart in a plane near the air outlet can be used to detect changes in air temperature.

[0040] It should be noted that the plane where the tops of the bulk particles in the accommodating space 41 a are located is higher than the plane where the three temperature measuring components 42 are located near the open end of the accommodating space 41 a.

[0041] Specifically, when the abrasive disc 20 contacts the plane where the top surface of the bulk material sample is located, the driving member drives the abrasive disc 20 to rotate and generates frictional heat between the abrasive disc 20 and the top surface of the bulk material sample. The temperature measuring member 42 in a plane near the opening end of the accommodating space 41a can record the initial temperature of the frictional heat generated by the top surface of the bulk material sample.

[0042] In addition, by adjusting the speed of the reduction motor 222, the mass of the counterweight 33 and the suction rate of the suction member 43, the friction relative motion speed, contact pressure and air convection intensity between the bulk material sample and the abrasive disc 20 can be changed.

[0043] Furthermore, the temperatures of the end of the abrasive disc 20 that contacts the bulk material sample and the end that connects to the connecting disc 225 are measured using a thermocouple thermometer and a thermal camera, respectively.

[0044] On the basis of the above solution, a heat insulating layer is provided on the inner wall of the material barrel 41. The heat insulating layer can prevent heat from diffusing out of the material barrel 41, thereby ensuring the accuracy of temperature measurement.

[0045] Specifically, the friction between the abrasive disc 20 and the bulk material sample generates heat at the contact surface, causing the temperature of the abrasive disc 20 and the bulk material sample to rise. Due to the thermal insulation layer within the material barrel 41, the heat generated by the bulk material sample is transferred from the contact surface to the bulk material sample within the material barrel 41, forming a temperature gradient. By installing temperature measuring elements 42 at locations near the contact surface, at a corresponding location near the base plate 410, and at a corresponding location near the air outlet, the temperature changes at different locations of the bulk material sample are monitored, thereby deducing the heat transfer patterns within each sample.

[0046] The beneficial effects are:

[0047] Compared with the prior art, the present invention provides a high-speed friction heat detection experimental device for bulk particles, which is fixed in an experimental bench through a material barrel. The material barrel is provided with a bottom plate that divides the interior of the material barrel into a storage space with a top opening and an exhaust space. The bottom plate is provided with multiple air holes, and the air outlet of the exhaust space is connected to the exhaust component. At least three temperature measuring components are respectively arranged in the storage space near the opening end, in the storage space near the bottom plate, and in the exhaust space near the air outlet. When the abrasive disk contacts the bulk particles in the storage space, friction heat is generated between the rotation of the abrasive disk and the bulk particles. By converting the relative motion of the bulk and the operating equipment, the rotating abrasive disk is used to contact the stationary bulk particle sample to simulate the friction motion between the two. The contact pressure between the abrasive disk and the bulk particle sample is simulated by the loading mechanism. The exhaust component exhausts air from the exhaust space to simulate the air convection in the gap between the bulk particle samples. The temperature measuring component records the temperature changes at different positions of the bulk particle samples to analyze the heat transfer law between different bulk particle samples.

[0048] The specific embodiments of the present invention described above do not limit the scope of protection of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A bulk particle high-speed friction heat detection experimental device, characterized in that: include Experimental bench; The friction mechanism is movably arranged inside the experimental bench and includes an abrasive disc that can rotate around its own axis; A loading mechanism, which is arranged in the experimental bench and connected to the friction mechanism, and is used to adjust the vertical downward pressure of the abrasive disc; as well as A detection mechanism is arranged in the experimental bench and is located below the friction mechanism, and includes a material barrel, a temperature measuring component and an air extraction component. The material barrel is fixed in the experimental bench, and is provided with a bottom plate that divides the interior of the material barrel into a storage space with a top opening and an air extraction space. The bottom plate is provided with a plurality of air holes, and the air outlet of the air extraction space is connected to the air extraction component. At least three temperature measuring components are respectively arranged in the storage space near the open end, in the storage space near the bottom plate, and in the air extraction space near the air outlet. When the abrasive disc contacts the bulk particles in the storage space, friction heat is generated between the rotation of the abrasive disc and the bulk particles. The friction mechanism includes a support plate slidably arranged in the experimental bench, and a driving member fixedly connected to the support plate, wherein the output end of the driving member is fixedly connected to the abrasive disc, and the driving member is used to drive the abrasive disc to rotate around its own central axis; Slide rails are provided on opposite sides of the experimental bench along the height direction, and sliders are provided on opposite sides of the support plate to match the slide rails on both sides; The driving member includes a bracket, a reduction motor, a coupling, a stepped shaft and a connecting plate, wherein the bracket is fixedly mounted on the support plate, the reduction motor is fixedly connected to the bracket, the output end of the reduction motor is fixedly connected to one end of the stepped shaft via the coupling, the other end of the stepped shaft is fixedly connected to the connecting plate, and the connecting plate is fixedly connected to the abrasive disc; The two loading mechanisms are respectively located on opposite sides of the driving member and have the same structure. The loading mechanisms include a roller rotatably arranged on the top of the experimental bench, a connecting rope and a counterweight block, one end of the connecting rope is connected to the counterweight block, and the connecting rope passes around the roller and is connected to the support plate at the other end, so as to adjust the vertical downward pressure of the abrasive disc by increasing or decreasing the mass of the counterweight block; Three temperature measuring components are arranged at intervals in a plane of the accommodating space close to the opening end, in a plane of the accommodating space close to the bottom plate, and in a plane of the exhaust space close to the air outlet, and the interval between two adjacent temperature measuring components in the same plane is 120°.

2. The high-speed friction heat detection experimental device for bulk particles according to claim 1 is characterized in that: The plane where the tops of the bulk particles in the accommodating space are located is higher than a plane where the three temperature measuring components are located near the opening end of the accommodating space.

3. The high-speed friction heat detection experimental device for bulk particles according to claim 1 is characterized in that: The counterweight block can be a weight.

4. The high-speed friction heat detection experimental device for bulk particles according to claim 1 is characterized in that: Each of the temperature measuring components is a thermocouple thermometer.

5. The high-speed friction heat detection experimental device for bulk particles according to claim 1 is characterized in that: The inner wall of the material barrel is provided with a heat insulation layer.

Images