CN110095503B - Use method of infrared nondestructive inspection device for modified asphalt pavement - Google Patents
Use method of infrared nondestructive inspection device for modified asphalt pavement Download PDFInfo
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- CN110095503B CN110095503B CN201910394692.5A CN201910394692A CN110095503B CN 110095503 B CN110095503 B CN 110095503B CN 201910394692 A CN201910394692 A CN 201910394692A CN 110095503 B CN110095503 B CN 110095503B
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/72—Investigating presence of flaws
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Abstract
The invention discloses a use method of an infrared nondestructive inspection device for a modified asphalt pavement, and particularly discloses a use method of an infrared nondestructive inspection integrated dual-purpose device for a modified asphalt pavement, which comprises the following steps: closing the shielding door, and selecting electromagnetic excitation heating or microwave excitation heating according to the material properties; closing the excitation device, stopping heating, controlling the excitation plate to move towards two sides, and opening the shielding door; the infrared camera is started to shoot the heating unit, the conversion of electromagnetic excitation and microwave excitation is realized by rotating the excitation plate around the rotating shaft, different excitation heating modes can be selected according to different modified asphalt pavements, and microwave excitation can be selected when modified materials such as soft magnetic particles, magnetite powder, activated carbon, carbon nano tubes and graphene are added to the modified asphalt pavements; when modified asphalt pavement is added with modified materials such as metal, carbon and the like, electromagnetic excitation is adopted. The heating mode is flexible, one method has two purposes, and the application range is wide.
Description
Technical Field
The invention belongs to the technical field of infrared nondestructive inspection of pavements, and particularly relates to a using method of an infrared nondestructive inspection device for a modified asphalt pavement.
Background
The development of traffic is an important guarantee of national economy, the basis of the traffic is roads, material transportation and personnel trip can not be carried out without the roads, and the quality of road engineering must be ensured in order to ensure the development of the traffic. Therefore, means for inspecting the surface and the interior of the road surface material to be inspected, i.e., a nondestructive inspection technique, without damaging the road surface or the raw material, is of great significance to the construction and maintenance of the road. While there are now a number of non-destructive detection means, for example: ground penetrating radar, drop weight deflectometer, ultrasonic flaw detection, magnetic particle flaw detection, etc., but a fast, low-cost, large-scale nondestructive flaw detection technology is still needed. The infrared nondestructive testing has the advantages, the infrared nondestructive testing is a new technology in nondestructive testing methods, and the testing result is displayed in an infrared thermography mode and is very visual. However, infrared flaw detection has some fatal weaknesses, the technical scheme is realized by using heat, the requirement on temperature is high, a high-efficiency heating method is urgently needed, and the problems that different materials need different heating modes, the materials are damaged by heating for too long time and the like exist, the actual flaw detection effect is influenced, and the application of infrared nondestructive flaw detection cannot be popularized.
Disclosure of Invention
The invention aims to provide a using method of an infrared nondestructive flaw detection device for a modified asphalt pavement, and aims to solve the problems that the requirement on temperature in the existing infrared nondestructive flaw detection is high, a high-efficiency heating method is urgently needed, different materials need different heating modes, the materials are damaged by heating for too long time, the actual flaw detection effect is influenced, and the like.
In order to achieve the purpose, the invention provides the following technical scheme: the use method of the infrared nondestructive inspection device for the modified asphalt pavement is characterized by comprising the following steps of:
s1: dividing the road surface into ground heating unit blocks 17 before working, wherein the area of the heating units is the same as that of the exciting plate 13;
s2: judging the properties of the modified materials added into the modified asphalt pavement, and selecting electromagnetic excitation heating or microwave excitation heating, wherein if the modified asphalt pavement additives are modified materials such as soft magnetic particles, magnetite powder, activated carbon, carbon nanotubes, graphene and the like, a microwave excitation mode is selected, and if the modified asphalt pavement additives are modified materials such as metals, carbon and the like, an electromagnetic excitation mode is selected;
s3: when the modified asphalt pavement additive is a modified material such as soft magnetic particles, magnetite powder, activated carbon, carbon nanotubes, graphene and the like, the telescopic rod 6 is shortened to pull the soft magnetic plate 7 into the inner mounting box 801 of the casing 8, the outer side wall plate 802 with low magnetic permeability and high electric conductivity serves as a shielding material, the excitation plate 13 rotates around the electric rotating shaft 12 until the metal mounting plate 13B faces downwards, the metal mounting plate 13B faces are made of a metal material with low magnetic permeability and high electric conductivity, the microwave electron tube 15 starts to work, and the metal casing 8 with low magnetic permeability and high electric conductivity and the metal mounting plate 13B faces of the excitation plate 13 reflect microwaves to heat the pavement by microwaves;
s4: when modified materials such as metal and carbon are added to the modified asphalt pavement, an excitation device needs to be converted from a microwave excitation mode into an electromagnetic excitation mode, an excitation device 4 needs to be converted from microwave excitation into electromagnetic excitation, at the moment, the telescopic rod 6 is extended to push the soft magnetic plate 7 out of the inner mounting box body 801, the soft magnetic plate 7 serves as a magnetic conductive material, the excitation plate 13 rotates 180 degrees around the electric rotating shaft 12 until the soft magnetic material mounting plate 13A of the excitation plate 13 faces downwards, the soft magnetic material mounting plate 13A is made of a soft magnetic material, the lifting rod 11 drives the excitation plate 13 to descend into a space surrounded by the soft magnetic plate 7, the electromagnetic coil 14 starts to work, the soft magnetic plate 7 and the soft magnetic material mounting plate 13A of the excitation plate 13 gather magnetic induction lines, and the pavement is heated;
s5: closing the excitation device 4, after the excitation device 4 stops working, driving the excitation plates 13 to rotate from a horizontal state to a vertical state by the electric rotating shaft 12, driving the rollers 9 to rotate by the driving motor 10, enabling the rollers 9 to move inside the roller mounting grooves 16, connecting the two excitation plates 13 with the rollers 9 through the lifting rods 11 and the driving motor 10, respectively moving to two sides along the roller mounting grooves 16 under the traction of the rollers 9, and opening the shielding door 2;
s6: the infrared camera 5 is operated to perform infrared camera shooting on the corresponding ground heating unit block 17, and the damage condition of the modified asphalt pavement is analyzed according to the content shot by the infrared camera 5.
Preferably, four side walls 3 are arranged, and the four side walls 3 and the shield door 2 form a bottomless box type closed structure.
Preferably, the excitation plate 13 includes a soft magnetic mounting plate 13A and a metal mounting plate 13B, the soft magnetic mounting plate 13A is fixedly mounted with uniformly distributed electromagnetic coils 14, and the metal mounting plate 13B is embedded with uniformly distributed microwave tubes 15.
Preferably, the shield door 2 is made of a flip-type metal with low magnetic permeability and high electric conductivity, and the metal mounting plate 13B is made of a metal with low magnetic permeability and high electric conductivity.
Preferably, the roller mounting groove 16, the roller 9, the driving motor 10, the lifting rod 11 and the electric rotating shaft 12 are made of metal materials with low magnetic permeability and high electric conductivity.
Preferably, the housing 8 and the telescopic rod 6 are both made of metal materials with low magnetic permeability and high electric conductivity.
Preferably, the soft magnetic plate 7 is a rectangular parallelepiped plate made of a magnetic conductive material.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention adopts the method that the exciting plate rotates around the rotating shaft to realize the conversion of electromagnetic excitation and microwave excitation, and can select different excitation heating modes according to different modified asphalt pavements, for example, when modified materials such as metal, carbon and the like are added into the modified asphalt pavements, the electromagnetic excitation can be selected; when the modified asphalt pavement is added with modified materials such as soft magnetic particles, magnetite powder, activated carbon, carbon nano tubes, graphene and the like, microwave excitation can be selected. The heating mode is flexible, one method is dual-purpose, the application range is wide, and the method is not only suitable for nondestructive testing of modified asphalt pavements, but also can be used for infrared nondestructive testing of other materials.
2. The invention adopts a method of controlling the soft magnetic plate to lift by the telescopic rod to realize the conversion of the shielding material when the excitation plate works in different excitation modes; when the excitation device is in electromagnetic excitation, the soft magnetic plate descends to serve as a magnetic conductive material, and the soft magnetic plate can realize the collection of an electromagnetic field; when the excitation device is excited by microwaves, the soft magnetic plate rises, the metal shell with low magnetic permeability and high electric conductivity serves as a shielding material, and the metal shell with low magnetic permeability and high electric conductivity can realize the reflection of the microwaves; the shielding method has two purposes, and the excitation heating efficiency is greatly improved.
3. The invention adopts a method that the distance between an excitation plate and a heating unit is controlled by a lifting rod; when the excitation device is in electromagnetic excitation, the excitation plate is far away from the heating unit; when the excitation device is excited by microwave, the excitation plate is close to the heating unit; the distance between the excitation plate and the heating unit is determined according to the types of the modified substances and the content of the modified substances in different modified asphalts, so that the heating efficiency is greatly improved, and the road surface is prevented from being damaged at high temperature due to the fact that the heating distance is too close.
Drawings
FIG. 1 is a diagram of the operating state of the apparatus;
FIG. 2 is a schematic diagram of the apparatus configuration;
FIG. 3 is a schematic view of the roller mounting groove structure of the device;
FIG. 4 is a schematic illustration of an excitation plate structure;
FIG. 5 is a schematic diagram of a soft magnetic mounting plate;
fig. 6 is a schematic view of a metal mounting plate structure.
In the figure: 1-control unit and power supply, 2-screen door, 3-side wall, 4-excitation device, 5-infrared camera, 6-telescopic rod, 7-soft magnetic plate, 8-shell, 801-inner installation box body, 802-outer side wall plate, 9-roller, 10-driving motor, 11-lifting rod, 12-electric rotating shaft, 13-excitation plate, 13A-soft magnetic material installation plate, 13B-metal installation plate, 14-electromagnetic coil, 15-microwave electronic tube, 16-roller installation groove and 17-ground heating unit block.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides the following technical solutions: the use method of the infrared nondestructive inspection device for the modified asphalt pavement is characterized by comprising the following steps of:
s1: dividing the road surface into ground heating unit blocks 17 before working, wherein the area of the heating units is the same as that of the exciting plate 13;
s2: judging the properties of the modified materials added into the modified asphalt pavement, and selecting electromagnetic excitation heating or microwave excitation heating, wherein if the modified asphalt pavement additives are modified materials such as soft magnetic particles, magnetite powder, activated carbon, carbon nanotubes, graphene and the like, a microwave excitation mode is selected, and if the modified asphalt pavement additives are modified materials such as metals, carbon and the like, an electromagnetic excitation mode is selected;
s3: when the modified asphalt pavement additive is a modified material such as soft magnetic particles, magnetite powder, activated carbon, carbon nanotubes, graphene and the like, the telescopic rod 6 is shortened to pull the soft magnetic plate 7 into the inner mounting box 801 of the casing 8, the outer side wall plate 802 with low magnetic permeability and high electric conductivity serves as a shielding material, the excitation plate 13 rotates around the electric rotating shaft 12 until the metal mounting plate 13B faces downwards, the metal mounting plate 13B faces are made of a metal material with low magnetic permeability and high electric conductivity, the microwave electron tube 15 starts to work, and the metal casing 8 with low magnetic permeability and high electric conductivity and the metal mounting plate 13B faces of the excitation plate 13 reflect microwaves to heat the pavement by microwaves;
s4: when modified materials such as metal and carbon are added to the modified asphalt pavement, an excitation device needs to be converted from a microwave excitation mode into an electromagnetic excitation mode, an excitation device 4 needs to be converted from microwave excitation into electromagnetic excitation, at the moment, the telescopic rod 6 is extended to push the soft magnetic plate 7 out of the inner mounting box body 801, the soft magnetic plate 7 serves as a magnetic conductive material, the excitation plate 13 rotates 180 degrees around the electric rotating shaft 12 until the soft magnetic material mounting plate 13A of the excitation plate 13 faces downwards, the soft magnetic material mounting plate 13A is made of a soft magnetic material, the lifting rod 11 drives the excitation plate 13 to descend into a space surrounded by the soft magnetic plate 7, the electromagnetic coil 14 starts to work, the soft magnetic plate 7 and the soft magnetic material mounting plate 13A of the excitation plate 13 gather magnetic induction lines, and the pavement is heated;
s5: closing the excitation device 4, after the excitation device 4 stops working, driving the excitation plates 13 to rotate from a horizontal state to a vertical state by the electric rotating shaft 12, driving the rollers 9 to rotate by the driving motor 10, enabling the rollers 9 to move inside the roller mounting grooves 16, connecting the two excitation plates 13 with the rollers 9 through the lifting rods 11 and the driving motor 10, respectively moving to two sides along the roller mounting grooves 16 under the traction of the rollers 9, and opening the shielding door 2;
s6: the infrared camera 5 is operated to perform infrared camera shooting on the corresponding ground heating unit block 17, and the damage condition of the modified asphalt pavement is analyzed according to the content shot by the infrared camera 5.
The number of the side walls 3 is four, and the four side walls 3 and the shielding door 2 form a bottomless box type closed structure.
The excitation plate 13 comprises a soft magnetic material mounting plate 13A and a metal mounting plate 13B, an electromagnetic coil 14 is fixedly mounted on the soft magnetic material mounting plate 13A, and microwave electronic tubes 15 are uniformly distributed on the metal mounting plate 13B in an embedded mode.
The shield door 2 is made of flip-type metal with low magnetic permeability and high electric conductivity, and the metal mounting plate 13B is made of metal with low magnetic permeability and high electric conductivity.
The roller mounting groove 16, the roller 9, the driving motor 10, the lifting rod 11 and the electric rotating shaft 12 are all made of metal materials with low magnetic permeability and high electric conductivity.
The shell 8 and the telescopic rod 6 are both made of metal materials with low magnetic permeability and high electric conductivity.
The soft magnetic plate 7 is a rectangular plate made of a magnetic conductive material.
The use method of the infrared nondestructive inspection device for the modified asphalt pavement comprises a control unit, a power supply 1, a shielding door 2, a side wall 3 and an excitation device 4, and is characterized in that: the four side walls 3 and the shielding door 2 form a bottomless box type closed structure, the top end of the bottomless box type closed structure is rotatably connected with the shielding door 2 through a hinge, the excitation device 4 is positioned at the inner side of the bottomless box type closed structure, the excitation device 4 comprises a roller mounting groove 16, a roller 9 and a driving motor 10, the microwave oven comprises a lifting rod 11, an electric rotating shaft 12 and an excitation plate 13, wherein a driving motor 10 is fixedly installed at the top end of the lifting rod 11, a rotating shaft of the driving motor 10 is fixedly connected with a central shaft of a roller 9, the electric rotating shaft 12 is fixedly connected with the bottom end of the lifting rod 11, the excitation plate 13 is arranged on the outer side of the electric rotating shaft 12, the excitation plate 13 comprises a soft magnetic material installation plate 13A and a metal installation plate 13B, an electromagnetic coil 14 is fixedly installed on the soft magnetic material installation plate 13A, and microwave electronic tubes 15 are uniformly distributed on the metal installation plate 13B in an embedded mode.
The number of the roller mounting grooves 16 is two, and the two roller mounting grooves 16 are respectively mounted on two sides inside the bottomless box type closed structure.
The inner sides of the roller mounting grooves 16 are slidably connected with four rollers 9, the rollers 9 are provided with four, and the four rollers 9 are divided into two groups which are uniformly distributed in the inner sides of the two roller mounting grooves 16.
The side wall 3 is composed of a telescopic rod 6, a soft magnetic plate 7 and a housing 8.
The housing 8 includes an outer side wall plate 802 and an inner mounting box 801.
The inner side upper part of the outer side wall plate 802 is fixedly provided with an inner mounting box body 801, the top end of the inner side of the inner mounting box body 801 is provided with an expansion link 6, and the bottom end of the expansion link 6 is fixedly provided with a soft magnetic plate 7.
The soft magnetic plate 7 is slidably connected to the bottom end slide groove of the inner mounting case 801.
The working principle and the using process of the invention are as follows: when the invention is used, the ground heating unit blocks 17 are divided on the road surface before working, wherein the area of the heating unit is the same as that of the exciting plate 13, and when the invention is used, the shielding door 2 is closed along the arrow direction shown in the figure, and then the exciting device 4 starts to work; if the modified asphalt pavement additive is a modified material such as soft magnetic particles, magnetite powder, activated carbon, carbon nano tubes, graphene and the like, microwave excitation is adopted; the telescopic rod 6 is shortened to draw the soft magnetic plate 7 into the inner mounting box body 801 of the shell 8, the outer side wall plate 802 with low magnetic permeability and high electric conductivity serves as a shielding material, the exciting plate 13 rotates around the electric rotating shaft 12 until the metal mounting plate 13B faces downwards, the metal mounting plate 13B faces are made of metal materials with low magnetic permeability and high electric conductivity, the microwave electronic tube 15 starts to work, the metal shell 8 with low magnetic permeability and high electric conductivity and the metal mounting plate 13B faces of the exciting plate 13 reflect microwaves, and heating efficiency is improved. When the modified asphalt pavement additive is a modified material such as metal, carbon and the like, the excitation device 4 needs to be converted from microwave excitation into electromagnetic excitation, at the moment, the telescopic rod 6 is extended to push the soft magnetic plate 7 out of the inner mounting box body 801, the soft magnetic plate 7 serves as a magnetic conductive material, the excitation plate 13 rotates 180 degrees around the electric rotating shaft 12 until the soft magnetic material mounting plate 13A of the excitation plate 13 faces downwards, the soft magnetic material mounting plate 13A is made of a soft magnetic material, the lifting rod 11 drives the excitation plate 13 to descend into a space surrounded by the soft magnetic plate 7, the electromagnetic coil 14 starts to work, and the soft magnetic plate 7 and the soft magnetic material mounting plate 13A of the excitation plate 13 gather magnetic induction lines, so that the heating efficiency is improved.
After the excitation device 4 stops working, the electric rotating shaft 12 drives the excitation plates 13 to rotate from a horizontal state to a vertical state, the driving motor 10 drives the roller 9 to rotate, the roller 9 moves inside the roller mounting groove 16, and the two excitation plates 13 are connected with the roller 9 through the lifting rod 11 and the driving motor 10 and move to two sides along the roller mounting groove 16 under the traction of the roller 9; at the moment, the shielding door 2 is opened, the infrared camera 5 works to perform infrared shooting on the corresponding ground heating unit block 17, and the damage condition of the modified asphalt pavement is analyzed according to the content shot by the infrared camera 5.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The use method of the infrared nondestructive inspection device for the modified asphalt pavement is characterized by comprising the following steps of:
s1: dividing the road surface into ground heating unit blocks (17) before working, wherein the area of the heating units is the same as that of the excitation plate (13);
s2: selecting electromagnetic excitation heating or microwave excitation heating according to the properties of a modified material added to the modified asphalt pavement, wherein a microwave excitation mode is selected if the modified asphalt pavement additive is soft magnetic particles, magnetite powder, activated carbon, carbon nanotubes and graphene, and an electromagnetic excitation mode is selected if the modified asphalt pavement additive is metal;
s3: when the modified asphalt pavement additives are soft magnetic particles, magnetite powder, activated carbon, carbon nanotubes and graphene, the telescopic rod (6) is shortened to draw the soft magnetic plate (7) into the inner mounting box body (801) of the shell (8), the outer side wall plate (802) with low magnetic permeability and high electric conductivity serves as a shielding material, the excitation plate (13) rotates around the electric rotating shaft (12) until the metal mounting plate (13B) faces downwards, the excitation plate (13) comprises a soft magnetic material mounting plate (13A) and a metal mounting plate (13B), the metal mounting plate (13B) faces are made of metal materials with low magnetic permeability and high electric conductivity, uniformly distributed microwave electronic tubes (15) are embedded on the metal mounting plate (13B), the microwave electronic tubes (15) start to work, the metal shell (8) with low magnetic permeability and high electric conductivity and the metal mounting plate (13B) faces of the excitation plate (13) reflect microwaves, carrying out microwave heating on the pavement;
s4: when the asphalt pavement additive metal is modified, an excitation device needs to be converted from a microwave excitation mode into an electromagnetic excitation mode, an excitation device (4) needs to be converted from microwave excitation into electromagnetic excitation, at the moment, a telescopic rod (6) extends to push a soft magnetic plate (7) out of an inner mounting box body (801), the soft magnetic plate (7) serves as a magnetic conductive material, an excitation plate (13) rotates 180 degrees around an electric rotating shaft (12) until a soft magnetic material mounting plate (13A) of the excitation plate (13) faces downwards, the soft magnetic material mounting plate (13A) is made of a soft magnetic material, uniformly distributed electromagnetic coils (14) are fixedly mounted on the soft magnetic material mounting plate (13A), a lifting rod (11) drives the excitation plate (13) to descend into a space surrounded by the soft magnetic plate (7), the electromagnetic coils (14) start to work, and the soft magnetic material mounting plates (13A) of the soft magnetic plate (7) and the excitation plate (13) gather magnetic induction lines, heating the pavement;
s5: closing the excitation device (4), after the excitation device (4) stops working, driving the excitation plates (13) to rotate to a vertical state from a horizontal state by the aid of the electric rotating shaft (12), driving the rollers (9) to rotate by the aid of the driving motor (10), moving the rollers (9) in the roller mounting grooves (16), connecting the two excitation plates (13) with the rollers (9) through the lifting rods (11) and the driving motor (10), respectively moving the two excitation plates to two sides along the roller mounting grooves (16) under the traction of the rollers (9), and opening the shielding door (2);
s6: the infrared camera (5) works to perform infrared camera shooting on the corresponding ground heating unit block, and the damage condition of the modified asphalt pavement is analyzed according to the content shot by the infrared camera (5).
2. The use method of the infrared nondestructive inspection device for the modified asphalt pavement according to claim 1, characterized in that: the outer shell (8) comprises an outer side wall plate (802) and an inner installation box body (801), the side walls (3) are composed of telescopic rods (6), soft magnetic plates (7) and the outer shell (8), the number of the side walls (3) is four, and the side walls (3) and the shield door (2) form a bottomless box type closed structure.
3. The use method of the infrared nondestructive inspection device for the modified asphalt pavement according to claim 1, characterized in that: the shielding door (2) is made of flip type materials and is made of metal with low magnetic permeability and high electric conductivity, and the metal mounting plate (13B) is made of metal with low magnetic permeability and high electric conductivity.
4. The use method of the infrared nondestructive inspection device for the modified asphalt pavement according to claim 1, characterized in that: the roller mounting groove (16), the roller (9), the driving motor (10), the lifting rod (11) and the electric rotating shaft (12) are all made of metal materials with low magnetic permeability and high electric conductivity.
5. The use method of the infrared nondestructive inspection device for the modified asphalt pavement according to claim 1, characterized in that: the shell (8) and the telescopic rod (6) are made of metal materials with low magnetic permeability and high electric conductivity.
6. The use method of the infrared nondestructive inspection device for the modified asphalt pavement according to claim 1, characterized in that: the soft magnetic plate (7) is a cuboid plate made of a magnetic conductive material.
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|---|---|
| CN110095503A (en) | 2019-08-06 |
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