Electromagnetic high-precision asphalt viscosity tester and testing method

Abstract

This invention belongs to the field of asphalt material performance index testing, solving the problems of sample segregation and low testing accuracy caused by traditional testing methods. It provides an electromagnetic high-precision asphalt viscosity tester and testing method. The test isolation chamber contains an electromagnetic guide rail assembly for mounting a test capsule. The test capsule includes a sample container, a metal ball, and a capsule electromagnetic guide rail. The sample container is filled with a sample. The capsule electromagnetic guide rail is mounted on the sample container along its axial direction. The metal ball is placed inside the sample container and positioned at the capsule electromagnetic guide rail, which is in contact with the electromagnetic guide rail assembly. A radar array is located below the test capsule. A main control box is connected to one side of the test isolation chamber and contains a central control unit, an electromagnetic guide rail control module, a radar array control module, a cooling system area, and a magnetic shielding box area. This invention can solve the sample segregation problem caused by traditional testing methods, control the temperature within a relatively fine range, and achieve high testing accuracy.

Description

Technical Field

[0001] This invention belongs to the field of asphalt material performance index testing, specifically relating to an electromagnetic high-precision asphalt viscosity tester and testing method. Background Technology

[0002] Viscosity is an important physical property of viscoelastic materials, and its applications are not limited to medicine, food, chemical industry, and civil engineering. For asphalt materials in road engineering, viscosity is a very important evaluation indicator.

[0003] Rubber-modified asphalt suffers from poor compatibility and homogeneity, which can amplify errors in experimental data. To more accurately obtain the viscosity value of rubber-modified asphalt, patent number CN 206710250U transforms the asphalt from a static to a flowing form, solving the segregation problem. While an asphalt inlet is located at the top of a fixed, insulated container and an outlet at the bottom, allowing for real-time monitoring of key asphalt parameters, the thin pipes make cleaning extremely difficult.

[0004] While traditional Brinell viscometers are simple to use, each measurement takes a long time, leading to segregation of some less stable samples and consequently inaccurate viscosity readings. Furthermore, for accuracy and comparability, Brinell viscometers can only compare viscosities under the same rotor and rotational speed. Measuring the viscosity of the same sample at different temperatures using the same rotor and rotational speed may result in significant errors at certain temperatures, causing torque to be too high or too low, which is detrimental to data acquisition. Summary of the Invention

[0005] In order to solve at least one of the above-mentioned technical problems in the prior art, the present invention provides an electromagnetic high-precision asphalt viscosity tester and a testing method.

[0006] This invention is achieved using the following technical solution: an electromagnetic high-precision asphalt viscosity tester, comprising a testing isolation box, a testing capsule, and a main control box. The testing isolation box contains an electromagnetic guide rail assembly for mounting the testing capsule. The testing capsule includes a sample-holding cylinder, a metal ball, and a capsule electromagnetic guide rail. The sample-holding cylinder is filled with a sample. The capsule electromagnetic guide rail is mounted on the sample-holding cylinder along its axial direction. The metal ball is placed inside the sample-holding cylinder and located at the capsule electromagnetic guide rail. The capsule electromagnetic guide rail is in contact with the electromagnetic guide rail assembly. A radar group is arranged below the testing capsule. The main control box is connected to one side of the testing isolation box and contains a central control host, an electromagnetic guide rail control module, a radar group control module, a cooling system area, and a magnetic shielding box area.

[0007] Preferably, the electromagnetic rail assembly includes an isolation box electromagnetic rail, a fixed bracket, and a telescopic locking block. The isolation box electromagnetic rail is fixed along the length of the inner cavity of the test isolation box. The fixed bracket is located directly below both sides of the isolation box electromagnetic rail and one end is fixed to the bottom of the inner cavity of the test isolation box. The telescopic locking block is located above the isolation box electromagnetic rail and one end is fixed to the side wall of the inner cavity of the test isolation box. The test capsule is clamped inside the electromagnetic rail assembly. The isolation box electromagnetic rail is a bidirectional rail, and the magnitude and direction of the current on the isolation box electromagnetic rail are controlled by the central control host. Both ends of the isolation box electromagnetic rail have cooling devices for heat dissipation.

[0008] Preferably, the test isolation box is provided with a first interface, a second interface and a third interface for connecting the main control box and the test capsule, wherein the first interface serves as a heating and temperature sensing cable interface, and the second and third interfaces serve as the inlet and outlet of coolant, respectively.

[0009] Preferably, one end of the sample-holding cylinder of the test capsule is open for filling with test material, the open end is sealed by a removable capsule cap, and the other end is closed and is provided with a fourth interface, a fifth interface and a sixth interface respectively connected to the first interface, the second interface and the third interface, wherein the fourth interface serves as a heating and temperature-sensing cable interface, and the fifth interface and the sixth interface serve as the inlet and outlet of coolant respectively.

[0010] The shell of the sample container has a double-layer sandwich structure. The contact part between the radar probe of the radar group and the sample container is a single-layer structure. The sandwich of the sample container contains a heating wire and a cooling pipe. A temperature sensor is installed at the end of the sample container near the main control box.

[0011] The capsule electromagnetic rail includes an external electromagnetic rail and an internal electromagnetic rail. The external electromagnetic rail is arranged along both sides of the capsule's longitudinal direction. The internal electromagnetic rail is located inside the test capsule and covers the external electromagnetic rail. The inner and outer sides of the external electromagnetic rail are respectively attached to the internal electromagnetic rail and the isolation box electromagnetic rail.

[0012] Preferably, the metal ball includes a metal armature and a heat-insulating outer shell. The metal armature includes a horseshoe-shaped armature in the middle and wear-resistant metal connected to both sides of the horseshoe-shaped armature. The heat-insulating outer shell wraps around the outside of the horseshoe-shaped armature, and the end of the wear-resistant metal protrudes from the heat-insulating outer shell and abuts against the built-in electromagnetic rail. The center of the metal ball is on the central axis of the test capsule.

[0013] Preferably, the radar group is located directly below the electromagnetic rail of the isolation box and one end is fixed to the bottom of the inner cavity of the test isolation box. The radar group is arranged along the axial direction of the test capsule and has a liftable structure.

[0014] The electromagnetic rail of the isolation box includes an inner conductive fixed rail, a middle thermally conductive insulating layer, and an outer metal fixed bracket. Both ends of the electromagnetic rail of the isolation box have cooling devices for heat dissipation.

[0015] Preferably, the test isolation box has multiple pairs of DC electromagnetic adsorption points between the box body and the box cover, and the remaining parts are made of magnetically insulating material. The main control box has a touch screen display on the top of the central control host. The test isolation box and the main control box are cooled by liquid cooling through the cooling system area. The magnetic shielding box area is provided with a shielding interlayer to shield the electromagnetic rail assembly and the components in the radar group that require magnetic shielding.

[0016] This invention also provides a method for high-precision electromagnetic asphalt viscosity testing, comprising the following steps:

[0017] S1: Place the metal ball on the capsule electromagnetic rail inside the sample container, add the sample into the sample container, and tighten the capsule cap;

[0018] S2: Connect the fourth, fifth, and sixth interfaces on the test capsule to the main control box, and clamp the test capsule inside the electromagnetic rail assembly;

[0019] S3: Isolation chamber for closed-loop testing. Experimental parameters, including test temperature, are input into the central control unit. Cleaning temperature The measurement begins, the radar array rises to the preset position, and the radar probe comes into contact with the test capsule;

[0020] S4: After waiting for the preset time, output the test data; open the test isolation box, take out the test capsule, open the capsule cap to pour out the sample, and wipe the inside of the test capsule and the metal ball clean.

[0021] Preferably, in step S1, if a 3D flow rate map needs to be output, a small amount of aluminum powder needs to be added to the sample container for flow rate tracking.

[0022] In step S2, to avoid insufficient sample leading to air inside the test capsule or sample expansion due to temperature rise affecting the test results, the sample is added at a temperature higher than the test temperature. The amount of sample added is higher than the opening of the sample container;

[0023] In step S4, the coolant in the interlayer of the test capsule is emptied by a circulation pump installed in the test capsule, and the temperature of the test capsule is then controlled at the cleaning temperature. ;

[0024] In step S4, the output experimental data includes the velocity of the metal ball. The viscosity of the sample, the current of the equivalent electromagnetic rail, the combination of the capsule electromagnetic rail and the isolation box electromagnetic rail as the equivalent electromagnetic rail, and the output of 3D flow velocity map when a 3D flow velocity map is required.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] This invention solves the sample segregation problem caused by traditional testing methods, achieving the goal of monitoring sample viscosity parameters from multiple angles throughout the entire process. The main control box enables fully automated testing, simplifying operation. Temperature control within the testing chamber includes both heating and cooling components; the chamber isolates the inside from the outside, maintaining a stable internal environment. The temperature control system, working in conjunction with the stable internal environment, allows for precise temperature control within a narrow range. Simultaneously, the temperature control system ensures the overall machine operates at a safe temperature, guaranteeing machine safety. The constantly moving metal balls continuously agitate the sample, significantly reducing segregation. After the test, the temperature inside the testing capsule can be automatically set, greatly facilitating capsule cleaning.

[0027] The radar array can perform multiple measurements simultaneously, acquiring a larger amount of information and providing high-precision, fast, and comprehensive results. After adding aluminum powder, a three-dimensional spatial model can be built based on the data, providing users with animations and tables showing the dynamics of the metal spheres and the sample's state. The machine requires periodic no-load runs for self-checks to ensure consistently high-precision operation. The machine matches measurement data with data from the calibration library, and will prompt for replacement of problematic components if errors are found or a faulty part is detected. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0030] Figure 2 yes Figure 1 Left view of the middle structure;

[0031] Figure 3 yes Figure 1 Top view of the structure;

[0032] Figure 4 yes Figure 1 Right view of the middle structure;

[0033] Figure 5 This is a schematic diagram of a longitudinal section of the test capsule of the present invention;

[0034] Figure 6 This is a schematic cross-sectional view of the test capsule of the present invention;

[0035] Figure 7 This is a top view of the metal sphere of the present invention;

[0036] Figure 8 This is a cross-sectional schematic diagram of the electromagnetic guide rail of the isolation box of the present invention;

[0037] Figure 9 This is a schematic diagram of the main control box of the present invention.

[0038] In the diagram: 1-Test isolation box; 1.1-First interface; 1.2-Second interface; 1.3-Third interface; 2-Test capsule; 2.1-Sample container; 2.11-Fourth interface; 2.12-Fifth interface; 2.13-Sixth interface; 2.2-Metal ball; 2.21-Horseshoe-shaped armature; 2.22-Wear-resistant metal; 2.23-Insulating and heat-insulating outer shell; 2.3-Capsule electromagnetic rail; 2.31-External electromagnetic rail; 2.32-Internal electromagnetic rail; 2.4-Capsule cover; 2.41- 1. Scratch lock; 2.42-Scratch lock slot; 2.5-Temperature sensor; 3-Main control box; 3.1-Central control host; 3.11-Touchscreen display; 3.2-Electromagnetic rail control module; 3.3-Radar group control module; 3.4-Cooling system area; 3.5-Magnetic shielding box area; 4-Electromagnetic rail assembly; 4.1-Isolation box electromagnetic rail; 4.11-Conductive fixed rail; 4.12-Thermal conductive insulation layer; 4.13-Metal fixed bracket; 4.2-Fixed bracket; 4.3-Telescopic block; 5-Radar group. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should fall within the scope of the technical content disclosed in the present invention. It should be noted that in this specification, relational terms such as "first" and "second" are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0041] This invention provides an embodiment:

[0042] like Figures 1 to 9 As shown, an electromagnetic high-precision asphalt viscosity tester includes a testing isolation box 1, a testing capsule 2, and a main control box 3. The testing isolation box 1 contains an electromagnetic guide rail assembly 4 for mounting the testing capsule 2. The testing capsule 2 includes a sample container 2.1, a metal ball 2.2, and a capsule electromagnetic guide rail 2.3. The sample container 2.1 is filled with a sample. The capsule electromagnetic guide rail 2.3 is mounted on the sample container 2.1 along its axial direction. The metal ball 2.2 is placed inside the sample container 2.1 and located at the capsule electromagnetic guide rail 2.3. The capsule electromagnetic guide rail 2.3 is in contact with the electromagnetic guide rail assembly 4. A radar group 5 is arranged below the testing capsule 2. The main control box 3 is connected to one side of the testing isolation box 1. The main control box 3 contains a central control host 3.1, an electromagnetic guide rail control module 3.2, a radar group control module 3.3, a cooling system area 3.4, and a magnetic shielding box area 3.5.

[0043] In this embodiment, multiple pairs of DC electromagnetic adsorption points are provided between the body and the lid of the test isolation box 1. The remaining parts are made of magnetically insulating material, which can block the magnetic field inside the box and isolate the temperature transfer between the inside and outside, providing a constant temperature environment for the test so that the central control host 3.1 can control the temperature of the test capsule 2. The test isolation box 1 is provided with a first interface 1.1, a second interface 1.2, and a third interface 1.3 for connecting the main control box 3 and the test capsule 2. The first interface 1.1 serves as a heating and temperature sensing cable interface, and the second and third interfaces serve as the inlet and outlet of the coolant, respectively. The cooling system area 3.4 is connected to the second and third interfaces 1.2 and 1.3. The cooling system can be connected to external pipes for cooling by a higher-level cooling system.

[0044] One end of the sample container 2.1 of the test capsule 2 is open for filling with test material. The open end is sealed by a removable capsule cap 2.4. The other end is closed and is provided with a fourth interface 2.11, a fifth interface 2.12 and a sixth interface 2.13 that are respectively connected to the first interface 1.1, the second interface 1.2 and the third interface 1.3. The fourth interface 2.11 serves as a heating and temperature sensing cable interface, and the fifth interface 2.12 and the sixth interface 2.13 serve as the inlet and outlet of the coolant, respectively.

[0045] The shell of the sample container 2.1 has a double-layer sandwich structure. The contact part between the radar probe of the radar group 5 and the sample container 2.1 is a single-layer structure. The sandwich structure of the sample container 2.1 contains a heating wire and a cooling pipe. The heating wire is connected to the fourth interface 2.11, and the cooling pipe is connected to the fifth interface 2.12 and the sixth interface 2.13. A temperature sensor 2.5 is installed at one end of the sample container 2.1 near the main control box 3 for real-time detection of the temperature inside the test capsule 2.

[0046] The capsule electromagnetic rail 2.3 includes an external electromagnetic rail 2.31 and an internal electromagnetic rail 2.32. The external electromagnetic rail 2.31 is arranged along both sides of the capsule's longitudinal direction. The internal electromagnetic rail 2.32 is located inside the test capsule 2 and covers the external electromagnetic rail 2.31. The internal electromagnetic rail 2.32 and the isolation box electromagnetic rail 4.1 are respectively attached to the inner and outer sides of the external electromagnetic rail 2.31. The internal electromagnetic rail 2.32 is a replaceable electromagnetic rail. When it is worn out after use, the component can be directly replaced to ensure the detection accuracy. The metal ball 2.2 can also be replaced with a different specification.

[0047] The metal ball 2.2 includes a metal armature and a heat-insulating shell 2.23. The metal armature includes a horseshoe-shaped armature 2.21 in the middle and wear-resistant metal 2.22 connected to both sides of the horseshoe-shaped armature 2.21. The heat-insulating shell 2.23 wraps around the outside of the horseshoe-shaped armature 2.21. The end of the wear-resistant metal 2.22 protrudes from the heat-insulating shell 2.23 and abuts against the built-in electromagnetic rail 2.32. The center of the metal ball 2.2 is on the central axis of the test capsule 2.

[0048] The main control unit 3.1 of the main control box 3 is equipped with a touch display 3.11. The test isolation box 1 and the main control box 3 are cooled by liquid cooling through the cooling system area 3.4. The magnetic shielding box area 3.5 is equipped with a shielding interlayer to shield the electromagnetic rail assembly 4 and the components in the radar group 5 that require magnetic shielding, including capacitors, energy storage devices, rail bidirectional switches and other devices. Each part is separated by the shielding interlayer.

[0049] The electromagnetic rail assembly 4 includes an isolation box electromagnetic rail 4.1, a fixed bracket 4.2, and a telescopic block 4.3. The isolation box electromagnetic rail 4.1 is fixed along the length of the inner cavity of the test isolation box 1. The fixed bracket 4.2 is located directly below both sides of the isolation box electromagnetic rail 4.1 and one end is fixed to the bottom of the inner cavity of the test isolation box 1. The telescopic block 4.3 is located above the isolation box electromagnetic rail 4.1 and one end is fixed to the side wall of the inner cavity of the test isolation box 1. The test capsule 2 is clamped in the electromagnetic rail assembly 4. The isolation box electromagnetic rail 4.1 is a bidirectional rail, and the magnitude and direction of the current on the isolation box electromagnetic rail 4.1 are controlled by the central control host 3.1. The two ends of the isolation box electromagnetic rail 4.1 have cooling devices for heat dissipation. The telescopic block 4.3 has a built-in spring and can be manually retracted backward.

[0050] The electromagnetic rail 4.1 of the isolation box includes an inner conductive fixed rail 4.11, a middle thermally conductive insulating layer 4.12, and an outer metal fixed bracket 4.13. The electromagnetic rail 4.1 of the isolation box has cooling devices at both ends for heat dissipation. The electromagnetic rail 4.1 of the isolation box is made of a thermally conductive material, and the cooling device cools it down to ensure its good working condition.

[0051] The radar group 5 is located directly below the electromagnetic rail 4.1 of the isolation box and is fixed at the bottom of the inner cavity of the test isolation box 1. The radar group 5 is arranged along the axis of the test capsule 2. The radar group 5 can be raised, lowered and bent to make it fit the test capsule 2 completely.

[0052] A high-precision electromagnetic method for testing asphalt viscosity includes the following steps:

[0053] S1: Place the metal ball 2.2 on the capsule electromagnetic rail 2.3 inside the sample container 2.1, add the sample into the sample container 2.1, and tighten the capsule cap 2.4;

[0054] S2: Connect the fourth interface 2.11, the fifth interface 2.12 and the sixth interface 2.13 on the test capsule 2 to the main control box 3, and clamp the test capsule 2 in the electromagnetic rail assembly 4;

[0055] S3: Isolation chamber 1 for closure test. Input experimental parameters, including test temperature, into the central control unit 3.1. Cleaning temperature The measurement begins, and radar group 5 is raised to the preset position so that the radar probe of radar group 5 comes into contact with the test capsule 2;

[0056] S4: After waiting for the preset time, output the test data; open the test isolation box 1, take out the test capsule 2, open the capsule cover 2.4 to pour out the sample, and wipe the inside of the test capsule 2 and the metal ball 2.2 clean.

[0057] Before the power-on test, a precision calibration test should be performed. The specific operation and principle are as follows: Place the metal ball 2.2 on the capsule electromagnetic rail 2.3 inside the sample container 2.1, and seal the test capsule 2; connect the fourth interface 2.11, fifth interface 2.12, and sixth interface 2.13 on the test capsule 2 to the main control box 3, and clamp the test capsule 2 tightly inside the electromagnetic rail assembly 4. The test capsule 2 should be in seamless contact with the isolation box electromagnetic rail 4.1 from all sides. Close the test isolation box 1, and record the current test material parameters, including the electromagnetic rail parameters and the distance the metal ball has moved. and the mass of the metal ball Once the parameters are entered into the system, the system automatically saves them, eliminating the need for repeated input in subsequent experiments. Clicking on "Precision Calibration" will initiate automatic operation, detecting the motion trajectory and attitude of the metal ball 2.2, and matching the current magnitude with various losses, etc.

[0058] Electromagnetic thrust on metal ball 2.2 for:

[0059]

[0060] In the formula, Electromagnetic thrust, The current is the equivalent electromagnetic rail. For inductance gradient;

[0061] Among them, inductance gradient The calculation formula is:

[0062]

[0063] In the formula, This is the equivalent electromagnetic rail height. The equivalent electromagnetic rail thickness; since the capsule electromagnetic rail 2.3 and the isolation box electromagnetic rail 4.1 are closely fitted, have the same height, and are made of the same material, this combination can be regarded as an equivalent electromagnetic rail. Specifically, the equivalent electromagnetic rail height is the height of the capsule electromagnetic rail 2.3 or the isolation box electromagnetic rail 4.1, and the equivalent electromagnetic rail thickness is the sum of the thicknesses of the capsule electromagnetic rail 2.3 and the isolation box electromagnetic rail 4.1. The value varies and The value of can be obtained by looking up a table.

[0064] The sliding friction resistance experienced by the small metal ball 2.2 The calculation formula is:

[0065]

[0066] In the formula, The coefficient of friction, The initial pressure between the metal ball and the built-in electromagnetic rail. The parameter is the Poisson's ratio of the material. It is the initial parameter measured by the manufacturer at the time of delivery, and the parameter change curve / formula is provided. It can be selected through preset models or input into a self-built parameter program.

[0067] The force acting on the metal ball The calculation formula is:

[0068]

[0069]

[0070] In the formula, This represents the distance the metal ball moves, a constant value that is related to the size of the test capsule. Let the mass of the metal ball be... The velocity of the metal ball. All losses, including frictional heat.

[0071] Radar group 5 measures the current speed, and the central control unit 3.1 records the current magnitude. Using the preset dimensions of each component, the force acting on the metal ball is determined using the formula described above. and Calculate by changing different speeds. Numerical value. (The rest of the text appears to be a list of numbers and symbols, possibly related to a numerical value or a specific Compared with the system's built-in calibration parameters, each machine is calibrated by the manufacturer before leaving the factory, and the system has built-in parameters that should be present during normal operation. The numerical values ​​can be matched with current-velocity, from which the remaining lifespan of the parts can be inferred. During machine operation, the system constantly performs self-checks, inspecting for broken contacts in the wiring and the posture of the metal ball during movement. The system compares the values ​​with preset parameters; if within the error range, it operates normally; otherwise, it outputs the error reason. The machine has a maximum power output, the power level of which is matched to the viscosity measurement range.

[0072] In step S1, if a 3D flow rate map needs to be output, a small amount of aluminum powder needs to be added to the sample container 2.1 for flow rate tracking.

[0073] In step S2, to avoid insufficient sample leading to air inside the test capsule 2 or temperature rise causing sample expansion and affecting the test results, the temperature of the added sample is higher than the test temperature. The amount of sample added is higher than the opening of the sample container 2.1;

[0074] In step S5, the coolant in the jacket of the test capsule 2 is drained by a circulation pump installed in the test capsule 2, and then the temperature of the test capsule 2 is controlled at the cleaning temperature. ;

[0075] In step S5, the output experimental data includes the velocity of the metal ball. The viscosity of the sample, the magnitude of the current of the equivalent electromagnetic rail, the combination of the capsule electromagnetic rail 2.3 and the isolation box electromagnetic rail 4.1 as the equivalent electromagnetic rail, and the output of 3D flow velocity map when a 3D flow velocity map is required.

[0076] The central control unit 3.1 continuously records and adjusts the current, controlling the speed of the metal ball 2.2 to 2 cm / s within a very short time. The force acting on the metal ball during uniform motion is calculated using the aforementioned formula. The center position and attitude of the metal ball 2.2 during its motion are monitored by radar group 5. The metal ball 2.2 should not exhibit any changes in attitude, such as swaying left and right or flipping forward and backward. The system has a built-in allowable range for changes in the position and attitude of the metal ball 2.2, and the data detected by radar group 5 is compared with the system's built-in data for self-checking.

[0077] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. An electromagnetic high precision asphalt viscosity tester, characterized in that: The utility model provides a kind of test capsule and test isolation box, which comprises test isolation box (1), test capsule (2) and main control box (3), test isolation box (1) is built-in for installing test capsule (2) electromagnetic rail assembly (4) in, test capsule (2) includes sample cylinder (2.1), metal ball (2.2) and capsule electromagnetic rail (2.3), sample cylinder (2.1) is filled with sample, capsule electromagnetic rail (2.3) is installed on sample cylinder (2.1) along sample cylinder (2.1) axial, metal ball (2.2) is placed in sample cylinder (2.1) and is located at capsule electromagnetic rail (2.3), capsule electromagnetic rail (2.3) is contacted with electromagnetic rail assembly (4), and radar group (5) is arranged below test capsule (2);Main control box (3) is connected on one side of test isolation box (1), and main control box (3) is built-in with central control host (3.1), electromagnetic rail control module (3.2), radar group control module (3.3), cooling system area (3.4) and magnetic shield box area (3.5).

2. The electromagnetic high-precision asphalt viscosity tester according to claim 1, characterized in that: The electromagnetic rail assembly (4) includes isolation box electromagnetic rail (4.1), fixed bracket (4.2) and telescopic clamping block (4.3), the isolation box electromagnetic rail (4.1) is fixed along the length direction of the inner cavity of the test isolation box (1), the fixed bracket (4.2) is located directly below the both sides of the isolation box electromagnetic rail (4.1) and is fixed at one end in the inner cavity bottom of the test isolation box (1), the telescopic clamping block (4.3) is located above the isolation box electromagnetic rail (4.1) and is fixed at one end in the inner cavity side wall of the test isolation box (1), the test capsule (2) is clamped in the electromagnetic rail assembly (4); The isolation box electromagnetic rail (4.1) is a bidirectional track, and the current size and direction on the isolation box electromagnetic rail (4.1) are controlled by the central control host (3.1); The both ends of the isolation box electromagnetic rail (4.1) have cooling devices for heat dissipation.

3. The electromagnetic high-precision asphalt viscosity tester according to claim 2, characterized in that: The test isolation box (1) is provided with a first interface (1.1), a second interface (1.2) and a third interface (1.3) for connecting the main control box (3) and the test capsule (2), wherein the first interface (1.1) is a heating and temperature sensing cable interface, and the second interface (1.2) and the third interface (1.3) are respectively the inlet and outlet of the cooling liquid.

4. The electromagnetic high-precision asphalt viscosity tester according to claim 3, characterized in that: One end of the sample cylinder (2.1) of the test capsule (2) is open for filling test materials, and the open end is sealed by a detachable capsule cover (2.4). The other end is closed and provided with a fourth interface (2.11), a fifth interface (2.12) and a sixth interface (2.13) connected with the first interface (1.1), the second interface (1.2) and the third interface (1.3) respectively, wherein the fourth interface (2.11) is a heating and temperature sensing cable interface, and the fifth interface (2.12) and the sixth interface (2.13) are respectively the inlet and outlet of the cooling liquid. The shell of the sample container (2.1) is a double-layer sandwich structure, wherein the contact part of the radar probe of the radar group (5) with the sample container (2.1) is a single-layer structure, the sandwich of the sample container (2.1) has a heat-conducting wire for heating and a pipeline for cooling, and the end of the sample container (2.1) close to the main control box (3) is provided with a temperature sensor (2.5); The capsule electromagnetic guide rail (2.3) includes an external electromagnetic guide rail (2.31) and an internal electromagnetic guide rail (2.32), the external electromagnetic guide rail (2.31) is arranged along the longitudinal sides of the capsule, the internal electromagnetic guide rail (2.32) is located on the inner side of the test capsule (2) and covers the external electromagnetic guide rail (2.31), and the inner and outer sides of the external electromagnetic guide rail (2.31) are respectively attached to the internal electromagnetic guide rail (2.32) and the electromagnetic guide rail (4.1) of the isolation box.

5. The electromagnetic high-precision asphalt viscosity tester according to claim 4, characterized in that: The metal ball (2.2) includes a metal armature and a heat-insulating and insulating shell (2.23), the metal armature includes a horseshoe-shaped armature (2.21) in the middle and wear-resistant metal (2.22) connected on both sides of the horseshoe-shaped armature (2.21), the heat-insulating and insulating shell (2.23) is wrapped on the outside of the horseshoe-shaped armature (2.21), and the end of the wear-resistant metal (2.22) is exposed from the heat-insulating and insulating shell (2.23) and abuts against the internal electromagnetic guide rail (2.32); the center of the metal ball (2.2) is on the central axis of the test capsule (2).

6. The electromagnetic high-precision asphalt viscosity tester according to claim 4, characterized in that: The radar group (5) is located directly below the electromagnetic guide rail (4.1) of the isolation box and is fixed at one end in the inner cavity of the test isolation box (1), the radar group (5) is arranged along the axial direction of the test capsule (2), and the radar group (5) is a liftable structure; The electromagnetic guide rail (4.1) of the isolation box includes an inner conductive fixed rail (4.11), a middle heat-conducting insulating layer (4.12) and an outer metal fixed support (4.13), and the two ends of the electromagnetic guide rail (4.1) of the isolation box have cooling devices for heat dissipation.

7. The electromagnetic high-precision asphalt viscosity tester according to claim 4, characterized in that: Pairs of direct-current electromagnetic adsorption points are arranged between the box body and the box cover of the test isolation box (1), the remaining parts are made of magnetic shielding and insulating materials, a touchable display (3.11) is arranged on the upper end of the central control host (3.1) of the main control box (3), the test isolation box (1) and the main control box (3) are cooled by the cooling system area (3.4), and a shielding sandwich is arranged in the magnetic shielding box area (3.5) and used for shielding the components that need to be magnetically shielded in the electromagnetic guide rail assembly (4) and the radar group (5).

8. An electromagnetic high-precision asphalt viscosity testing method based on the electromagnetic high-precision asphalt viscosity tester according to any one of claims 4 to 7, characterized in that: The method comprises the following steps, S1: placing the metal ball (2.2) on the capsule electromagnetic guide rail (2.3) in the sample container (2.1), adding a sample into the sample container (2.1), and tightening the capsule cover (2.4); S2: connecting the fourth interface (2.11), the fifth interface (2.12) and the sixth interface (2.13) on the test capsule (2) with the main control box (3), and clamping the test capsule (2) in the electromagnetic guide rail assembly (4). S3: Close the test isolation box (1), input the experimental parameters in the central control host (3.1), including the test temperature , the cleaning temperature , start the measurement, the radar group (5) rises to the preset position, and the radar probe is in abutment with the test capsule (2); S4: After waiting for a preset time, output the test data; open the test isolation box (1), take out the test capsule (2), open the capsule cover (2.4) to pour out the sample, and wipe clean the inside of the test capsule (2) and the metal balls (2.2).

9. The electromagnetic high-precision asphalt viscosity test method according to claim 8, characterized in that: In step S1, if it is necessary to output a 3d flow rate graph, a small amount of aluminum powder is added in the sample container (2.1) for flow rate tracking; In step S2, to avoid the influence of air in the capsule (2) or the expansion of the sample due to temperature rise caused by insufficient sample, the temperature of the added sample is higher than the test temperature , and the amount of the added sample is higher than the position of the cylinder opening of the sample cylinder (2.1). In step S4, the coolant in the test capsule (2) is emptied by means of a circulating pump provided in the test capsule (2), and the temperature of the test capsule (2) is controlled at the cleaning temperature ; In step S4, the output test data includes the metal ball movement speed , the viscosity of the sample, the current size of the equivalent electromagnetic guide rail, the combination of the capsule electromagnetic guide rail (2.3) and the isolation box electromagnetic guide rail (4.1) as an equivalent electromagnetic guide rail, and the 3D flow velocity diagram when a 3D flow velocity diagram is needed.

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