Quenching method and related device for magnesium oxide insulating material used in high-insulation cable

Abstract

The embodiments of the present application relate to the fields of magnesium oxide extraction and insulating material manufacturing, and provide a tempering method and related device for a magnesium oxide insulating material for high-insulation cables. The method includes: controlling a grinding device to perform initial grinding on fused magnesia to obtain an initial magnesium oxide particle group; controlling a pneumatic separation device to perform pneumatic separation on the initial magnesium oxide particle group to obtain a first magnesium oxide particle group; controlling a shaping device to perform precise shaping on the first magnesium oxide particle group to obtain a second magnesium oxide particle group with a higher sphericity; controlling the shaping device to mix the second magnesium oxide particle group with a particle group composed of alumina, silica, and zirconia to obtain a mixture; controlling a calcination device to calcine the mixture to remove impurities, and obtain a magnesium oxide insulating material for high-insulation cables, which can perform precise shaping on the ground magnesium oxide particles to obtain magnesium oxide particles with a higher sphericity, thereby improving the insulation performance of the subsequent magnesium oxide material.

Description

Technical Field

[0001] The present application relates to the fields of magnesium oxide extraction and insulating material manufacturing, and particularly relates to a tempering method and related device for a magnesium oxide insulating material for high-insulation cables. Background Art

[0002] Light-burned magnesium oxide is a very important basic magnesia raw material, and the existing demand for magnesium oxide is also increasing day by day. With the demand for magnesium oxide series products gradually changing from low quality to high quality, the performance requirements for magnesium oxide-based insulating materials are also getting higher and higher.

[0003] In the existing solutions, when manufacturing high-performance magnesium oxide products, it is usually directly to mix the ground magnesium oxide particles with other additives, and then perform operations such as calcination to form a magnesium oxide insulating material. However, since the magnesium oxide crystals (particles) are square, when they are broken, the broken magnesium oxide crystals usually have sharp edges and corners, etc., resulting in poor fluidity, thus reducing the performance of the manufactured magnesium oxide products. Summary of the Invention

[0004] The embodiments of the present application provide a tempering method and related device for a magnesium oxide insulating material for high-insulation cables, which can accurately shape the ground magnesium oxide particles to obtain magnesium oxide particles with higher sphericity, thereby improving the insulation performance of the subsequent manufactured magnesium oxide material.

[0005] The first aspect of the embodiments of the present application provides a tempering method for a magnesium oxide insulating material for high-insulation cables, and the method includes:

[0006] Controlling a grinding device to initially grind fused magnesia to obtain an initial magnesium oxide particle group;

[0007] Controlling an air separation device to perform air separation on the initial magnesium oxide particle group to obtain a first magnesium oxide particle group;

[0008] Controlling a shaping device to accurately shape the first magnesium oxide particle group to obtain a second magnesium oxide particle group with higher sphericity;

[0009] Controlling the shaping device to mix the second magnesium oxide particle group with a particle group composed of aluminum oxide particles, silicon oxide, and zirconium oxide to obtain a mixture;

[0010] Controlling a calcination device to calcine the mixture to remove impurities to obtain a magnesium oxide insulating material for high-insulation cables.

[0011] In this example, the electrofused magnesia is initially ground by controlling the grinding device to obtain an initial group of magnesia particles. The air separation device is controlled to perform air separation on the initial group of magnesia particles to obtain a first group of magnesia particles. The shaping device is controlled to perform precise shaping on the first group of magnesia particles to obtain a second group of magnesia particles with a higher sphericity. The shaping device is controlled to mix the second group of magnesia particles with a group of particles composed of alumina particles, silicon oxide, and zirconium oxide to obtain a mixture. The calcination device is controlled to calcine the mixture to remove impurities, thereby obtaining a magnesia insulating material for high-insulation cables. Therefore, by precisely shaping the ground magnesia particles, magnesia particles with a higher sphericity can be obtained, resulting in higher fluidity when the magnesia particles are mixed with the mixture, improving the mixing degree of the final obtained mixture, and thus enhancing the insulation performance of the subsequent produced magnesia material.

[0012] The second aspect of the embodiments of the present application provides a conditioning device for a magnesia insulating material for high-insulation cables. The device includes:

[0013] A grinding unit for controlling a grinding device to initially grind electrofused magnesia to obtain an initial group of magnesia particles;

[0014] An air separation unit for controlling an air separation device to perform air separation on the initial group of magnesia particles to obtain a first group of magnesia particles;

[0015] A shaping unit for controlling a shaping device to perform precise shaping on the first group of magnesia particles to obtain a second group of magnesia particles with a higher sphericity;

[0016] The shaping unit is used to control the shaping device to mix the second group of magnesia particles with a group of particles composed of alumina particles, silicon oxide, and zirconium oxide to obtain a mixture;

[0017] A calcination unit for controlling a calcination device to calcine the mixture to remove impurities and obtain a magnesia insulating material for high-insulation cables.

[0018] The third aspect of the embodiments of the present application provides a terminal, including a processor, an input device, an output device, and a memory. The processor, input device, output device, and memory are interconnected. Among them, the memory is used to store a computer program, and the computer program includes program instructions. The processor is configured to call the program instructions to execute the step instructions in the first aspect of the embodiments of the present application.

[0019] The fourth aspect of the embodiments of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, and the computer program causes a computer to execute some or all of the steps described in the first aspect of the embodiments of the present application.

[0020] The fifth aspect of the embodiments of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to execute some or all of the steps described in the first aspect of the embodiments of the present application. The computer program product can be a software installation package. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0022] Figure 1 FIG. is a schematic structural diagram of a conditioning system for magnesium oxide insulating material for high-insulation cables provided by an embodiment of the present application;

[0023] Figure 2 FIG. is a schematic structural diagram of a shaping device provided by an embodiment of the present application;

[0024] Figure 3 FIG. is a schematic flow chart of a conditioning method for magnesium oxide insulating material for high-insulation cables provided by an embodiment of the present application;

[0025] Figure 4 FIG. is a schematic diagram of a target diameter distribution diagram provided by an embodiment of the present application;

[0026] Figure 5 FIG. is a schematic structural diagram of a terminal provided by an embodiment of the present application;

[0027] Figure 6 FIG. is a schematic structural diagram of a conditioning device for magnesium oxide insulating material for high-insulation cables provided by an embodiment of the present application.

[0028] In the figure,

[0029] 1. Grinding device; 2. Air separation device; 3. Shaping device; 4. Calcining device;

[0030] 31. Control module; 32. Rotor; 33. First blade; 34. Second blade; 35. Material accommodating component;

[0031] 501, grinding unit; 502, air separation unit; 503, shaping unit; 504, calcination unit. Specific embodiments

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present application belong to the scope of protection of the present application.

[0033] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally further include steps or units not listed, or may optionally further include other steps or units inherent to these processes, methods, products or devices.

[0034] Referring to "embodiments" in the present application means that a specific feature, structure or characteristic described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described in the present application can be combined with other embodiments.

[0035] To better understand a tempering method for a magnesium oxide insulating material for a high-insulation cable provided in the embodiments of the present application, a brief introduction to the existing tempering method for a magnesium oxide insulating material for a high-insulation cable will be given below. Due to the wide application of magnesium oxide particles in the insulation scenario, for example, magnesium oxide particles are used as an insulating layer to wrap the cable for insulation. In the existing solution, when manufacturing a magnesium oxide insulating material, fused magnesia is usually ground to obtain magnesium oxide particles, and then these magnesium oxide particles are directly mixed with additives and then subjected to steps such as calcination to obtain a magnesium oxide insulating material. However, since magnesium oxide crystals (particles) are square, when they are broken, the broken magnesium oxide crystals usually have sharp corners, etc. Therefore, the fluidity of the magnesium oxide particles obtained by directly grinding fused magnesia is poor, which reduces the performance of the mixture obtained by mixing, and thus reduces the performance of the manufactured magnesium oxide product.

[0036] To solve the above technical problems, an embodiment of the present application provides a tempering method for magnesium oxide insulating material for high-insulation cables. By precisely shaping the ground magnesium oxide particles, magnesium oxide particles with higher sphericity can be obtained, resulting in higher fluidity when the magnesium oxide particles are mixed with the mixture, ultimately improving the mixing degree of the obtained mixture, and thus enhancing the insulation performance of the subsequent manufactured magnesium oxide material.

[0037] Please refer to Figure 1 , Figure 1 which is a schematic diagram of a tempering system for magnesium oxide insulating material for high-insulation cables provided by an embodiment of the present application. As Figure 1 shown, the tempering system for magnesium oxide insulating material for high-insulation cables includes a grinding device 1, a pneumatic separation device 2, a shaping device 3, and a calcining device 4. The output port of the grinding device 1 is connected to the input port of the pneumatic separation device 2, the output port of the pneumatic separation device 2 is connected to the input port of the shaping device 3, and the output port of the shaping device 3 is connected to the input port of the calcining device 4. The output port of the pneumatic separation device 2 and the input port of the shaping device 3 are hermetically connected through a pipeline, and the output port of the shaping device 3 and the input port of the calcining device 4 are hermetically connected through a pipeline. The grinding device 1 can be a ball mill device, etc. The diameter of the initial magnesium oxide particle group includes 0.0425 mm - 0.425 mm. Of course, there are also magnesium oxide particles larger than the maximum value of this diameter range and magnesium oxide particles smaller than the minimum value of this diameter range. At this time, it is necessary to perform pneumatic separation on the magnesium oxide particles to obtain a magnesium oxide particle group that meets the diameter requirements (the diameter requirement range can be 0.0425 mm - 0.425 mm). Since there are magnesium oxide particles that do not meet the sphericity and roundness requirements in the first magnesium oxide particle group obtained by ball milling and pneumatic separation of the ball mill device, it is necessary to perform shaping treatment on the magnesium oxide particle group to improve the sphericity and roundness of the magnesium oxide particles. Then, the first magnesium oxide particle group can be input into the shaping device 3 for shaping to obtain a second magnesium oxide particle group that meets the sphericity and roundness requirements. After shaping, a particle group composed of alumina, silica, and zirconia is added to the shaping device 3, and the rotation speed of the rotor of the shaping device 3 is controlled to stir and mix them to obtain a mixture. Finally, the mixture is input into the calcining device 4 for calcination to remove impurities, thereby obtaining the magnesium oxide insulating material for high-insulation cables. The particle group composed of alumina, silica, and zirconia added here can also include other mixtures, for example, aerosol (composed of silicon molecules), etc.

[0038] Therefore, by precisely shaping the ground magnesium oxide particles, magnesium oxide particles with higher sphericity can be obtained, resulting in higher fluidity when the magnesium oxide particles are mixed with the mixture, ultimately improving the mixing degree of the obtained mixture, and thus enhancing the insulation performance of the subsequent manufactured magnesium oxide material.

[0039] Please refer toFigure 2 , Figure 2 FIG. 3 is a schematic plan view of a shaping device 3 provided by an embodiment of the present application. As Figure 2 shown, the shaping device 3 includes a control module 31, a rotor 32, a first blade 33, a second blade 34, and a material accommodating member 35. Among them, the rotor 32 is disposed inside the material accommodating member 35. The rotor 32 is connected to the control module 31. The rotor 32 connecting member is connected to the first blade 33. The connection point of the rotor 32 connecting member and the first blade 33 can move relative to the rotor 32 axis of rotation (i.e., the connecting member can be controlled to extend to control the rotation radius of the tip of the first blade 33 away from the axis of rotation). The inner wall of the material accommodating member 35 is provided with a second blade 34. The length of the blade can be 1-2 cm. The single blades of the first blade 33 and the second blade 34 are arranged staggeredly. The control module 31 can control the rotation speed of the rotor 32 and the distance between the tips of the first blade 33 and the second blade 34. By controlling the rotation speed of the rotor 32 and the distance between the tips of the first blade 33 and the second blade 34, shaping with different shaping intensities can be achieved, so that the sphericity and roundness of the magnesium oxide particles in the second magnesium oxide particle population obtained by shaping can be controlled more precisely.

[0040] Please refer to Figure 3 , Figure 3 FIG. 4 is a schematic process flow diagram of tempering of magnesium oxide insulating material for high-insulation cables provided by an embodiment of the present application. As Figure 3 shown, this method is applied to a tempering system for magnesium oxide insulating material for high-insulation cables. The tempering system for magnesium oxide insulating material for high-insulation cables includes a grinding device 1, an air separation device, a shaping device 3, and a shaping device 4. The output port of the grinding device 1 is connected to the input port of the air separation device. The output port of the air separation device is connected to the input port of the shaping device 3. The output port of the shaping device 3 is connected to the input port of the shaping device 4. This method includes:

[0041] 301. Control the grinding device 1 to perform initial grinding on fused magnesia to obtain an initial magnesium oxide particle group.

[0042] Among them, the grinding device 1 can be a general ball mill, a flat mill, etc. It can grind fused magnesia to obtain an initial magnesium oxide particle group that has not been shaped (i.e., the initial magnesium oxide particle group).

[0043] 302. Control the air separation device to perform air separation on the initial magnesium oxide particle group to obtain a first magnesium oxide particle group.

[0044] The air separation device includes a wind power generation module, and the initial magnesium oxide particle group can be air-separated by controlling the wind power generation parameters of the wind power module. Specifically, the air separation device can be controlled with initial air separation control parameters to air-separate the first sample magnesium oxide particle group in the initial magnesium oxide particle group to obtain a second sample magnesium oxide particle group. When air-separating the initial magnesium oxide particle group, the initial magnesium oxide particle group is fed into the air separation device in batches for air separation. At this time, the magnesium oxide particle group that enters the air separation device in the first batch can be determined as the first sample magnesium oxide particle group. Using the air separation result (diameter distribution diagram) of the first sample magnesium oxide particle group to correct the initial air separation control parameters can improve the accuracy of subsequent air separation. For example, the parameter adjustment information can be determined by the difference value between the diameter distribution diagram of the second sample magnesium oxide particle group and the preset diameter distribution diagram, and the initial air separation parameters are adjusted using the parameter adjustment information to obtain the target air separation parameters, and the initial magnesium oxide particle group is air-separated using the target air separation parameters to obtain the first magnesium oxide particle group.

[0045] 303. Control the shaping device 3 to perform precise shaping on the first magnesium oxide particle group to obtain a second magnesium oxide particle group with a higher sphericity.

[0046] The method for performing precise shaping on the first magnesium oxide particle group can be as follows: The shape feature information of the magnesium oxide particles corresponding to k diameters at the center of the diameter distribution of the first magnesium oxide particle group can be extracted to obtain a shape feature information set. The shape feature information can include sphericity information and roundness information; then the group shaping strength is determined using the shape feature information set, and the shaping control parameters of the shaping device 3 are calculated based on the group shaping strength. Finally, the shaping device 3 is controlled using the shaping control parameters to perform precise shaping on the first magnesium oxide particle group to obtain a second magnesium oxide particle group with a higher sphericity. Among them, the shaping control parameters can include the rotation speed of the rotor, the distance between the first blade and the second blade, the initial velocity of the first magnesium oxide particle group when entering the shaping device 3, etc.

[0047] 304. Control the shaping device 3 to mix the second magnesium oxide particle group with the particle group composed of alumina, silica, and zirconia to obtain a mixture.

[0048] Among them, the particle group composed of alumina, silica, and zirconia is input into the shaping device 3, and stirring and mixing are performed through the shaping device 3 to obtain a mixture.

[0049] 305. Control the shaping device 4 to calcine the mixture to remove impurities to obtain a magnesium oxide insulating material for high-insulation cables.

[0050] Among them, the shaping device 4 can be controlled to heat the mixture to 300-350 degrees Celsius in a slow heating manner for a cumulative heating of 30-40 minutes; then control the shaping device 4 to cool the heated mixture by means of negative pressure cooling. After cooling, the magnesium oxide insulating material for high-insulation cables is obtained. By the slow heating method, moisture and other impurities in the mixture can be evaporated, and then the mixture is cooled by the negative pressure slow cooling method to ensure the stability during cooling and improve the performance of the finally obtained magnesium oxide insulating material for high-insulation cables.

[0051] In this example, by controlling the grinding device 1 to initially grind fused magnesia to obtain an initial group of magnesium oxide particles, controlling the air separation device to perform air separation on the initial group of magnesium oxide particles to obtain a first group of magnesium oxide particles, controlling the shaping device 3 to perform precise shaping on the first group of magnesium oxide particles to obtain a second group of magnesium oxide particles with a higher sphericity, controlling the shaping device 3 to mix the second group of magnesium oxide particles with a group of particles composed of aluminum oxide, silicon oxide, and zirconium oxide to obtain a mixture, and controlling the shaping device 4 to calcine the mixture to remove impurities to obtain the magnesium oxide insulating material for high-insulation cables. Therefore, by performing precise shaping on the ground magnesium oxide particles, magnesium oxide particles with a higher sphericity can be obtained, so that the fluidity of the magnesium oxide particles during mixing with the mixture is higher, the mixing degree of the finally obtained mixture is improved, and thus the insulation performance of the subsequently produced magnesium oxide material is improved.

[0052] In a possible implementation manner, a method for controlling an air separation device to perform air separation on the initial group of magnesium oxide particles to obtain a first group of magnesium oxide particles includes:

[0053] A1. Input the first sample group of magnesium oxide particles in the initial group of magnesium oxide particles into the air separation device, where the first sample group of magnesium oxide particles is the group of magnesium oxide particles that enter the air separation device in the first batch;

[0054] A2. Control the air separation device to perform air separation on the first sample group of magnesium oxide particles using the initial air separation parameters to obtain a second sample group of magnesium oxide particles;

[0055] A3. Construct a target diameter distribution map of the second sample group of magnesium oxide particles;

[0056] A4. If the difference value between the target diameter distribution map and the preset diameter distribution map is greater than the preset difference value threshold, determine parameter adjustment information according to the difference value;

[0057] A5. Adjust the initial air separation parameters using the parameter adjustment information to obtain target air separation parameters;

[0058] A6. Use the target air separation parameters to control the air separation device to perform air separation on the initial magnesium oxide particle group to obtain a first magnesium oxide particle group.

[0059] Among them, the initial air separation control parameters are set through empirical values or historical data. The initial air separation control parameters include the air generation parameters of the air force module. The air generation parameters include air flow velocity and air force direction. The air separation device adopts a flotation device. Specifically, it can be understood that air force is generated by the air force module, so that the magnesium oxide particles have movement in the vertical direction. The magnesium oxide particles are screened according to their volume size, air flow velocity, etc. to obtain magnesium oxide particles that meet the diameter requirements.

[0060] After obtaining the second sample magnesium oxide particle group, the diameters of the magnesium oxide particles in the second sample magnesium oxide particle group can be detected. For example, it can be detected by infrared scanning, or the second sample magnesium oxide particle group can be placed in a pneumatic transmission pipeline for pneumatic transmission, multiple images during pneumatic transmission are extracted, and then a three-dimensional model diagram of the second sample magnesium oxide particle group during pneumatic transmission is constructed based on the multiple images. Based on the three-dimensional model diagram, the diameter information of the magnesium oxide particles in the second sample magnesium oxide particle group is obtained, and finally a target diameter distribution diagram is constructed based on the diameter information.

[0061] Among them, the three-dimensional position information and three-dimensional shape of the second sample magnesium oxide particles can be extracted from multiple images to construct a three-dimensional model diagram. Among them, general position correction and three-dimensional shape construction methods can be used to obtain the three-dimensional position information and construct the three-dimensional shape of the second sample magnesium oxide particles.

[0062] The maximum end point distance of the magnesium oxide particles in the three-dimensional model diagram can be determined as the diameter of the magnesium oxide particles in the second sample magnesium oxide particle group, so as to obtain a first diameter set. Use this first diameter set to construct a target diameter distribution diagram.

[0063] The target diameter distribution diagram can be a circular diagram. The diameter value at the center of the circular diagram is 0, the radius of the sector is the target diameter, and the angle a of the sector is associated with the number of target diameters. The larger the number, the larger the angle. Specifically, it can be as Figure 4 shown.

[0064] The quantity difference value between the target diameter distribution and the preset diameter distribution diagram at each diameter can be obtained, and the weighted value of the quantity difference value is determined as the difference value between the target diameter distribution and the preset diameter distribution diagram. The preset difference value threshold is set through empirical values or historical data. The weighted value of the quantity difference value can be understood as that each diameter has its corresponding weight value, and the weight value operation is performed on the weight value and the quantity difference value to obtain the difference value between the target diameter distribution and the preset diameter distribution diagram.

[0065] This difference value can characterize the difference between the second sample of magnesium oxide particle group and the magnesium oxide particle group required in actuality. This difference is caused by different air separation parameters. Therefore, this difference can be used to generate parameter adjustment information to adjust the initial air separation parameters to obtain the target air separation parameters.

[0066] The method for determining the parameter adjustment information according to the difference value can be: determine the magnitude of the adjustment value in the parameter adjustment information according to the magnitude of the difference value. The larger the absolute value of the difference value, the larger the adjustment value; the smaller the absolute value of the difference value, the smaller the adjustment value. The adjustment value can be understood as the adjustment value of the air flow rate. The larger the adjustment value, the greater the adjustment intensity of the air flow rate; the smaller the adjustment value, the smaller the adjustment intensity of the air flow rate. The adjustment intensity can be understood as the larger the absolute value of the adjustment value, the greater the adjustment intensity; the smaller the absolute value, the smaller the adjustment intensity. When adjusting the air flow rate with the adjustment value, it can be a positive adjustment or a negative adjustment. A positive adjustment can be understood as increasing the air flow rate, and a negative adjustment can be understood as decreasing the air flow rate. The adjustment direction of the adjustment value is related to the positive or negative of the difference value. If the difference value is positive, it indicates that there are more diameters in the diameter distribution of the second sample of magnesium oxide particle group that are larger than the diameters in the preset diameter distribution diagram, and the adjustment direction is negative to reduce the air flow rate; if the difference value is negative, it indicates that there are more diameters in the diameter distribution of the second sample of magnesium oxide particle group that are smaller than the diameters in the preset diameter distribution diagram, and the adjustment direction is positive to increase the air flow rate to increase the number of large diameters. The relationship between the difference value and the parameter adjustment information can be a linear relationship or a non-linear relationship.

[0067] The sum of the parameter adjustment information and the initial risk parameters can be determined as the target air separation parameters. Finally, using the target air separation parameters to control the air separation device to perform air separation on the initial magnesium oxide particle group can improve the accuracy of obtaining the first magnesium oxide particle group.

[0068] In a possible implementation manner, a method for controlling the shaping device 3 to perform precise shaping processing on the first magnesium oxide particle group to obtain a second magnesium oxide particle group with a higher sphericity includes:

[0069] B1. Extract the external shape feature information of the magnesium oxide particles corresponding to k diameters at the center of the diameter distribution in the first magnesium oxide particle group to obtain a first external shape feature information set;

[0070] B2. Determine the group shaping intensity information according to the first external shape feature information set;

[0071] B3. Determine the shaping control parameters of the shaping device 3 according to the shaping intensity information;

[0072] B4. Use the shaping control parameters to control the shaping device 3 to perform precise shaping on the first magnesium oxide particle group, and obtain a second magnesium oxide particle group with a higher sphericity.

[0073] Among them, the center of the diameter distribution can be understood as the diameter corresponding to the largest number of diameters. For example, the diameter corresponding to the sector with the largest included angle in the target diameter distribution diagram can be determined as the center of the diameter distribution. The k diameters at the center of the diameter distribution can be understood as k / 2 diameters greater than the center of the diameter distribution and k / 2 - 1 diameters less than the center of the diameter distribution.

[0074] The shape feature information includes sphericity information and roundness information. The group shaping intensity information can be determined according to the first set of shape feature information. Specifically, the first set of shape feature information is clustered to obtain multiple shape types, and the shaping intensity of each type is determined according to the sphericity information and roundness information of each shape type. Finally, the shaping intensities of each type are fused to obtain the group shaping intensity information. Since the sphericity information and roundness information in the shape feature information can directly characterize the fluidity of magnesium oxide particles during mixing, the greater the sphericity value indicated by the sphericity information, the higher the fluidity, and the greater the roundness value indicated by the roundness information, the higher the fluidity.

[0075] The shaping control parameters of the shaping device 3 can be determined according to the method shown in the following formula based on the shaping intensity information:

[0076]

[0077] Among them, q is the shaping intensity information, α is the rotor speed, v is the velocity value of the magnesium oxide particles in the first magnesium oxide particle group when entering the shaping device 3, θ is the angle between the velocity of the magnesium oxide particles in the first magnesium oxide particle group when entering the shaping device 3 and the vertical direction, d is the distance between the tip of the first blade 33 and the tip of the second blade 34, and the covering area of the first blade 33 on the second blade 34. The first blade 33 and the opposite second blade 34 are arranged in a stacked manner, and their covering area will affect the shaping force. The optimal solutions of the rotor speed, the distance between the tip of the first blade 33 and the tip of the second blade 34, and the covering area of the first blade 33 on the second blade 34 that can enable the shaping device 3 to perform shaping with the minimum energy consumption can be obtained through the relationship shown in the above formula, and then the shaping control parameters can be obtained. The shaping control parameters can control the blades to meet the above distance and covering area, and control the rotation speed of the rotor 32 to be the above rotor speed.

[0078] The shaping control parameters can be used to control the shaping morphology of the corresponding components in the shaping device 3 to perform precise shaping on the first magnesium oxide particle group, and obtain a second magnesium oxide particle group with a higher sphericity.

[0079] In this example, the shaping intensity information can be determined according to the shape feature information of the magnesium oxide particles corresponding to k diameters in the central distribution of the first group of magnesium oxide particles. Then, the shaping control parameters can be determined according to the shaping intensity information. Finally, the shaping device 3 is controlled by the shaping control parameters to perform precise shaping on the first group of magnesium oxide particles, obtaining a second group of magnesium oxide particles with higher sphericity. Therefore, the shaping intensity can be determined according to the shape features of the magnesium oxide particles at the central distribution, ensuring that most magnesium oxide particles can be precisely shaped, while also taking into account the shaping of the remaining magnesium oxide particles, improving the accuracy during shaping and also enhancing the efficiency in determining the shaping intensity information.

[0080] In a possible implementation manner, a method for determining the group shaping intensity information according to the first set of shape feature information includes:

[0081] C1. Performing clustering processing on the first set of shape feature information to obtain m shape types;

[0082] C2. Obtaining the type sphericity information corresponding to the m shape types respectively, and obtaining the type roundness information corresponding to the m shape types respectively;

[0083] C3. Determining the shaping intensity information corresponding to each type according to the type sphericity information and type roundness information corresponding to the m shape types respectively, obtaining m type shaping intensity information;

[0084] C4. Performing fusion processing on the m type shaping intensity information to obtain the group shaping intensity information.

[0085] Among them, a general clustering method can be used to cluster the first set of shape feature information to obtain m shape types. Each shape type includes the shapes of one or more magnesium oxide particles.

[0086] The average value of the sphericity values indicated by the sphericity information in the shape information of the magnesium oxide particles included in the shape type can be determined as the sphericity value indicated by the type sphericity information corresponding to this type, and the average value of the roundness values indicated by the roundness information in the shape information of the magnesium oxide particles included in the shape type can be determined as the roundness value indicated by the type roundness information corresponding to this type.

[0087] It is possible to obtain the sphericity information and roundness information of the reference magnesium oxide particles corresponding to the shape type. The reference magnesium oxide particles can be understood as the usable magnesium oxide particles that are closest to the type sphericity information and type roundness information of the shape type. In this way, the situation of excessive shaping during shaping can be reduced. It is possible to obtain a first similarity between the type sphericity information and the sphericity information of the reference magnesium oxide particles, and obtain a second similarity between the type roundness information and the roundness information of the reference magnesium oxide particles; determine the sum of the first similarity and the second similarity as the target similarity, and use the target similarity to determine the shaping intensity information. The higher the similarity, the smaller the shaping intensity, and the lower the similarity, the greater the shaping intensity. The shaping intensity information can be a shaping intensity value. The larger the shaping intensity value, the greater the shaping intensity, and the smaller the shaping intensity value, the smaller the shaping intensity.

[0088] It is possible to extract the shaping intensity greater than the preset threshold among the shaping intensities of the m type shaping intensity information. The preset threshold can be the type shaping intensity information with the fifth largest type shaping intensity value among the m type shaping intensity information, that is, take the first five type shaping intensity information from high to low, and determine the average value of these five type shaping intensity information as the population shaping intensity information.

[0089] In this example, by determining the shaping intensity information from the type sphericity information and type roundness information of the m shape types, the population shaping intensity information is determined, which can improve the accuracy and efficiency when obtaining the population shaping intensity information.

[0090] Consistent with the above embodiments, please refer to Figure 5 , Figure 5 which is a schematic structural diagram of a terminal provided by an embodiment of the present application. As Figure 5 shown, it includes a processor, an input device, an output device, and a memory. The processor, input device, output device, and memory are interconnected. Among them, the memory is used to store a computer program, and the computer program includes program instructions. The processor is configured to call the program instructions, and the above program includes instructions for performing the following steps;

[0091] Control the grinding device 1 to perform initial grinding on the fused magnesia to obtain an initial group of magnesium oxide particles;

[0092] Control the air separation device to perform air separation on the initial group of magnesium oxide particles to obtain a first group of magnesium oxide particles;

[0093] Control the shaping device 3 to perform precise shaping on the first group of magnesium oxide particles to obtain a second group of magnesium oxide particles with higher sphericity;

[0094] Control the shaping device 3 to mix the particle group formed by mixing the second magnesium oxide particle group with alumina, silica, and zirconia to obtain a mixture;

[0095] Control the shaping device 4 to calcine the mixture to remove impurities, obtaining a magnesium oxide insulating material for high-insulation cables.

[0096] The above mainly introduces the solution of the embodiment of the present application from the perspective of the execution process on the method side. It can be understood that in order for the terminal to implement the above functions, it includes the corresponding hardware structure and / or software module for executing each function. Those skilled in the art should easily realize that, combining the units and algorithm steps of each example described in the embodiments provided in this article, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed in the way of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional technicians can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0097] The embodiment of the present application can divide the functions of the terminal according to the above method examples. For example, each function unit can be divided corresponding to each function, or two or more functions can be integrated into one processing unit. The above integrated unit can be implemented in the form of hardware or in the form of a software function unit. It should be noted that the division of units in the embodiment of the present application is illustrative, only a logical function division, and there may be other division methods in actual implementation.

[0098] Consistent with the above, please refer to Figure 6 , Figure 6 which is a schematic structural diagram of a conditioning device for a magnesium oxide insulating material for high-insulation cables provided by an embodiment of the present application. As Figure 6 shown, the device includes:

[0099] A grinding unit 501 for controlling the grinding device 1 to perform initial grinding on fused magnesia to obtain an initial magnesium oxide particle group;

[0100] An air separation unit 502 for controlling the air separation device to perform air separation on the initial magnesium oxide particle group to obtain a first magnesium oxide particle group;

[0101] A shaping unit 503 for controlling the shaping device 3 to perform precise shaping on the first magnesium oxide particle group to obtain a second magnesium oxide particle group with a higher sphericity;

[0102] The shaping unit 503 is configured to control the shaping device 3 to mix the second magnesium oxide particle group with the particle group formed by mixing alumina particles, silicon oxide, and zirconia to obtain a mixture;

[0103] The calcining unit 504 is configured to control the shaping device 4 to calcine the mixture to remove impurities, thereby obtaining the magnesium oxide insulating material for high-insulation cables.

[0104] In a possible implementation, the air separation unit 502 is specifically configured to:

[0105] Input the first sample magnesium oxide particle group in the initial magnesium oxide particle group into the air separation device, where the first sample magnesium oxide particle group is the magnesium oxide particle group that enters the air separation device in the first batch;

[0106] Control the air separation device to perform air separation on the first sample magnesium oxide particle group using the initial air separation parameters to obtain a second sample magnesium oxide particle group;

[0107] Construct the target diameter distribution diagram of the second sample magnesium oxide particle group;

[0108] If the difference value between the target diameter distribution diagram and the preset diameter distribution diagram is greater than the preset difference value threshold, determine the parameter adjustment information according to the difference value;

[0109] Adjust the initial air separation parameters using the parameter adjustment information to obtain the target air separation parameters;

[0110] Control the air separation device to perform air separation on the initial magnesium oxide particle group using the target air separation parameters to obtain the first magnesium oxide particle group.

[0111] In a possible implementation, in terms of controlling the shaping device 3 to perform precise shaping on the first magnesium oxide particle group to obtain a second magnesium oxide particle group with a higher sphericity, the shaping unit 503 is specifically configured to:

[0112] Extract the external shape feature information of the magnesium oxide particles corresponding to k diameters at the center of the diameter distribution in the first magnesium oxide particle group to obtain a first external shape feature information set;

[0113] Determine the group shaping intensity information according to the first external shape feature information set;

[0114] Determine the shaping control parameters of the shaping device 3 according to the shaping intensity information;

[0115] Control the shaping device 3 to perform precise shaping on the first magnesium oxide particle group using the shaping control parameters to obtain a second magnesium oxide particle group with a higher sphericity.

[0116] In a possible implementation, in terms of determining the group shaping intensity information according to the first set of shape feature information, the shaping unit 503 is specifically configured to:

[0117] Perform clustering processing on the first set of shape feature information to obtain m shape types;

[0118] Obtain the type sphericity information corresponding to the m shape types respectively, and obtain the type roundness information corresponding to the m shape types respectively;

[0119] Determine the shaping intensity information corresponding to each type according to the type sphericity information and type roundness information corresponding to the m shape types respectively, to obtain m type shaping intensity information;

[0120] Fuse the m type shaping intensity information to obtain the group shaping intensity information.

[0121] In a possible implementation, the calcining unit 504 is specifically configured to:

[0122] Control the shaping device 4 to heat the mixture to 300 - 350 degrees Celsius in a slow heating manner, and accumulate heating for 30 - 40 minutes;

[0123] Control the shaping device 4 to cool the heated mixture by means of negative pressure cooling, and after cooling, obtain the magnesium oxide insulating material for high - insulation cables.

[0124] The embodiment of the present application also provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program enables a computer to execute some or all of the steps of any one of the tempering methods of the magnesium oxide insulating material for high - insulation cables described in the above - mentioned method embodiments.

[0125] The embodiment of the present application also provides a computer program product, the computer program product includes a non - transitory computer - readable storage medium storing a computer program, and the computer program enables a computer to execute some or all of the steps of any one of the tempering methods of the magnesium oxide insulating material for high - insulation cables described in the above - mentioned method embodiments.

[0126] It should be noted that for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present application is not limited by the described action sequence, because according to the present application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present application.

[0127] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0128] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of the devices or units can be in electrical or other forms.

[0129] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0130] In addition, in each embodiment of the application, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated units can be implemented in the form of hardware or in the form of software program modules.

[0131] If the above integrated unit is implemented in the form of a software program module and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a memory and includes several instructions for causing a computer device (which can be a personal computer, a server or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment of the present application. And the aforementioned memory includes: various media such as USB flash drives, read-only memories (ROM), random access memories (RAM), mobile hard disks, magnetic disks or optical discs that can store program codes.

[0132] Those of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing relevant hardware through a program, and the program can be stored in a computer-readable memory, which may include: a flash drive, a read-only memory, a random access memory, a magnetic disk, or an optical disk, etc.

[0133] The above embodiments of the present application have been introduced in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method and its core idea of the present application; at the same time, for those of ordinary skill in the art, according to the idea of the present application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present application.

Claims

1. A tempering method for magnesium oxide insulating material used in high-insulation cables, characterized in that, The method includes: Controlling a grinding device to conduct initial grinding on fused magnesia to obtain an initial magnesium oxide particle group; Controlling an air separation device to conduct air separation on the initial magnesium oxide particle group to obtain a first magnesium oxide particle group; Controlling a shaping device to conduct precise shaping on the first magnesium oxide particle group to obtain a second magnesium oxide particle group with higher sphericity; Controlling the shaping device to mix the second magnesium oxide particle group with a particle group composed of alumina, silica, and zirconia to obtain a mixture; Controlling a calcining device to calcine the mixture to remove impurities and obtain a magnesium oxide insulating material for high-insulation cables; The controlling the shaping device to conduct precise shaping on the first magnesium oxide particle group to obtain a second magnesium oxide particle group with higher sphericity includes: Extracting the shape feature information of magnesium oxide particles corresponding to k diameters at the center of the diameter distribution in the first magnesium oxide particle group to obtain a first shape feature information set; Determining the group shaping intensity information according to the first shape feature information set; Determining the shaping control parameters of the shaping device according to the shaping intensity information; Using the shaping control parameters to control the shaping device to conduct precise shaping on the first magnesium oxide particle group to obtain a second magnesium oxide particle group with higher sphericity; The determining the group shaping intensity information according to the first shape feature information set includes: Conducting clustering processing on the first shape feature information set to obtain m shape types; Obtaining the type sphericity information corresponding to the m shape types respectively, and obtaining the type roundness information corresponding to the m shape types respectively; Determining the shaping intensity information corresponding to each type respectively according to the type sphericity information and type roundness information corresponding to the m shape types respectively to obtain m type shaping intensity information; Conducting fusion processing on the m type shaping intensity information to obtain the group shaping intensity information.

2. The tempering method of the magnesium oxide insulating material for high-insulation cables according to claim 1, characterized in that, The controlling the air separation device to conduct air separation on the initial magnesium oxide particle group to obtain a first magnesium oxide particle group includes: Inputting a first sample magnesium oxide particle group in the initial magnesium oxide particle group into the air separation device, where the first sample magnesium oxide particle group is the magnesium oxide particle group that enters the air separation device in the first batch; Using initial air separation parameters to control the air separation device to conduct air separation on the first sample magnesium oxide particle group to obtain a second sample magnesium oxide particle group; Constructing a target diameter distribution map of the second sample magnesium oxide particle group; If the difference value between the target diameter distribution map and a preset diameter distribution map is greater than a preset difference value threshold, determining parameter adjustment information according to the difference value; Adjusting the initial air separation parameters using the parameter adjustment information to obtain target air separation parameters; Using the target air separation parameters to control the air separation device to conduct air separation on the initial magnesium oxide particle group to obtain a first magnesium oxide particle group.

3. The tempering method of the magnesium oxide insulating material for high-insulation cables according to any one of claims 1-2, characterized in that, The controlling the calcining device to calcine the mixture to remove impurities and obtain a magnesium oxide insulating material for high-insulation cables includes: Controlling the calcining device to heat the mixture to 300 - 350 degrees Celsius in a slow heating manner and accumulate heating for 30 - 40 minutes; Control the calcination device to cool the heated mixture by means of negative pressure cooling. After cooling, the magnesium oxide insulating material for high-insulation cables is obtained.

4. A tempering device for magnesium oxide insulating material used in high-insulation cables, characterized in that, This device is applied to the conditioning system of the magnesium oxide insulating material for high-insulation cables. The conditioning system of the magnesium oxide insulating material for high-insulation cables includes a grinding device, a pneumatic separation device, a shaping device, and a calcination device. The output port of the grinding device is connected to the input port of the pneumatic separation device. The output port of the pneumatic separation device is connected to the input port of the shaping device. The output port of the shaping device is connected to the input port of the calcination device. The shaping device includes a control module, a rotor, a first blade, a second blade, and a material accommodating component. Among them, the rotor is arranged inside the material accommodating component, the rotor is connected to the control module, the rotor connecting piece is connected to the first blade, and the connection point between the rotor connecting piece and the first blade can move relative to the rotor shaft. The inner wall of the material accommodating component is provided with a second blade, and the single blades of the first blade and the second blade are arranged staggeredly. The device includes: A grinding unit for controlling the grinding device to perform initial grinding on fused magnesia to obtain an initial magnesium oxide particle group; A pneumatic separation unit for controlling the pneumatic separation device to perform pneumatic separation on the initial magnesium oxide particle group to obtain a first magnesium oxide particle group; A shaping unit for controlling the shaping device to perform precise shaping on the first magnesium oxide particle group to obtain a second magnesium oxide particle group with higher sphericity; The shaping unit for controlling the shaping device to mix the second magnesium oxide particle group with a particle group formed by mixing alumina particles, silicon oxide, and zirconium oxide to obtain a mixture; A calcination unit for controlling the calcination device to calcine the mixture to remove impurities to obtain the magnesium oxide insulating material for high-insulation cables; In terms of controlling the shaping device to perform precise shaping on the first magnesium oxide particle group to obtain a second magnesium oxide particle group with higher sphericity, the shaping unit specifically is used for: Extracting the shape feature information of the magnesium oxide particles corresponding to k diameters at the center of the diameter distribution in the first magnesium oxide particle group to obtain a first shape feature information set; Determining the group shaping strength information according to the first shape feature information set; Determining the shaping control parameters of the shaping device according to the shaping strength information; Using the shaping control parameters to control the shaping device to perform precise shaping on the first magnesium oxide particle group to obtain a second magnesium oxide particle group with higher sphericity; In terms of determining the group shaping strength information according to the first shape feature information set, the shaping unit specifically is used for: Performing clustering processing on the first shape feature information set to obtain m shape types; Obtaining the type sphericity information corresponding to the m shape types respectively, and obtaining the type roundness information corresponding to the m shape types respectively; Determining the shaping strength information corresponding to each type according to the type sphericity information and type roundness information corresponding to the m shape types respectively to obtain m type shaping strength information; Performing fusion processing on the m type shaping strength information to obtain the group shaping strength information.

5. The tempering device for the magnesium oxide insulating material used in the high-insulation cable according to claim 4, characterized in that, The pneumatic separation unit specifically is used for: Input the first sample of magnesium oxide particle groups in the initial magnesium oxide particle groups into an air separation device, where the first sample of magnesium oxide particle groups is the magnesium oxide particle groups that enter the air separation device in the first batch; Control the air separation device to perform air separation on the first sample of magnesium oxide particle groups using initial air separation parameters to obtain a second sample of magnesium oxide particle groups; Construct a target diameter distribution map of the second sample of magnesium oxide particle groups; If the difference value between the target diameter distribution map and a preset diameter distribution map is greater than a preset difference value threshold, determine parameter adjustment information based on the difference value; Adjust the initial air separation parameters using the parameter adjustment information to obtain target air separation parameters; Control the air separation device to perform air separation on the initial magnesium oxide particle groups using the target air separation parameters to obtain a first magnesium oxide particle group.

6. A terminal, characterized in that, It includes a processor, an input device, an output device, and a memory. The processor, input device, output device, and memory are interconnected. Among them, the memory is used to store a computer program, and the computer program includes program instructions. The processor is configured to call the program instructions to execute the tempering method of the magnesium oxide insulating material for high-insulation cables as described in any one of claims 1-3.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, and the computer program includes program instructions. When the program instructions are executed by a processor, the processor is caused to execute the tempering method of the magnesium oxide insulating material for high-insulation cables as described in any one of claims 1-3.

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