Modularized line scanning thermal excitation device

Abstract

The utility model relates to a modularized line scanning thermal excitation device, and belongs to the technical field of nondestructive testing. The problems that the excitation effect of a traditional lamp tube type infrared excitation source is not concentrated, the adaptability of combination of multiple excitation sources is poor, and the replaceability of a lamp tube is poor are solved. Comprising a shell, a cooling fan, a reflecting plate and an infrared lamp source, the cooling fan is arranged on the rear side of the shell, the reflecting plate and the infrared lamp source are arranged on the front side of the shell, and the infrared lamp source is located on the front side of the reflecting plate. According to the utility model, the structure of the reflecting cover is improved, and the switching between different widths and the power of the lamp tube is realized through modular design, so that the adaptability of multi-method scanning nondestructive testing of a large-size structure is facilitated; according to the utility model, the long-time working stability of the device is ensured by cooling the back surface of the reflecting plate.

Description

Technical Field

[0001] The utility model relates to a thermal excitation device, belonging to the technical field of nondestructive testing. Background Art

[0002] Infrared nondestructive testing technology refers to the technology that uses the principle that substances emit infrared light when thermally excited and that materials with internal defects have different infrared characteristics compared to the defect-free state. Without damaging or affecting the service performance of the object to be detected, it can detect whether there are defects or non-uniformities in the object to be detected and give information such as the size, location, nature, and quantity of the defects. Currently, there are various means to heat the object to be measured, such as optoelectronic heating, eddy current heating, laser ultrasonic heating, etc. Optoelectronic heating, that is, the heating method using elements with high photothermal conversion efficiency such as halogen lamps, has the advantages of high reliability, stable thermal excitation, and low cost.

[0003] Detection equipment using halogen lamps as the heating means has been widely used in the material defect detection work of various industries. However, in the field of infrared scanning, due to the poor heat concentration of the lamp tube type excitation source, it has a great limitation on the scanning effect. For example, traditional infrared nondestructive testing uses LEDs or halogen lamps as the excitation source, conducts infrared excitation to the material surface, and uses the difference in thermal conductivity caused by different internal structures of the material to extract and identify defect features. For example: the publication number is CN219245419U, and the invention creation name is a small modular halogen lamp heating unit. Although its technical solution has achieved a good cost-effectiveness ratio in terms of lightweight and modularity, there are certain defects in the excitation quality, excitation width adjustment, and increase or decrease of excitation power. During the scanning process, the surface temperature change of the scanned area of the excited area is collected by an infrared camera, saved and sorted out, and the complete scanning result of the large-size structural member is finally obtained through image reconstruction. When the excitation effect of the excitation source is not concentrated, the heat in the defect area is not concentrated, and the defect feature signal is not significant; in addition, when it is necessary to adjust the thermal excitation spot width and excitation power for different types of structures, although the two modular excitation structures can expand the excitation area by means of multiple groups in series, the problem of low reflection efficiency of the reflector of these two excitation units itself has not been solved.

[0004] Therefore, there is an urgent need to propose a modular line-scanning thermal excitation device to solve the above technical problems. Summary of the Utility Model

[0005] To solve the problems of the traditional lamp - type infrared excitation source with non - concentrated excitation effect, poor adaptability in the combined use of multiple excitation sources, and poor lamp replaceability, a modular line - scanning thermal excitation device is provided. A brief overview of the present utility model is given below to provide a basic understanding of certain aspects of the present utility model. It should be understood that this overview is not an exhaustive overview of the present utility model. It is not intended to identify the key or important parts of the present utility model, nor is it intended to limit the scope of the present utility model.

[0006] The technical solution of the present utility model:

[0007] A modular line - scanning thermal excitation device includes a housing, a cooling fan, a reflector, and an infrared light source. The cooling fan is arranged at the rear side of the housing, the reflector and the infrared light source are arranged at the front side of the housing, and the infrared light source is located in front of the reflector.

[0008] Preferably: The infrared light source is a 26 - cm short - wave infrared light source.

[0009] Preferably: The number of reflectors is two. The two reflectors are symmetrically arranged. The front side of the reflector is parabolic, and the rear side of the reflector is linear. The infrared light source is located between the two reflectors.

[0010] Preferably: It further includes a reflector mounting base. The reflector mounting base is connected to the middle of the housing by bolts. One end of the reflector is bolt - connected to the housing, and the other end of the reflector is bolt - connected to the reflector mounting base.

[0011] Preferably: It further includes a cooling - fan fixing part and a long bolt. A rear ventilation opening is processed on the rear side wall of the housing. A cooling fan is arranged at the corresponding position of the rear ventilation opening. The long bolt sequentially passes through the through - hole on the rear side wall of the housing, the mounting hole of the cooling fan, and the mounting hole or threaded hole of the cooling - fan fixing part and is thread - connected with a nut to fix the cooling fan.

[0012] Preferably: The reflector mounting base is processed with a middle ventilation opening, and the front ventilation openings are respectively processed on the upper and lower side walls of the housing. The front ventilation openings are located between the two connection parts of the reflector mounting base, the reflector, and the housing. The front ventilation opening, the middle ventilation opening, and the rear ventilation opening are sequentially connected to form a heat - dissipation air duct.

[0013] Preferably: It further includes a turntable, a rotating shaft, and a nut fitting. Nut fittings are fixedly arranged on the left and right sides of the housing. The two sides of the U - shaped turntable are respectively arranged corresponding to the left and right sides of the housing. A gasket is arranged between the U - shaped turntable and the housing. The rotating shaft sequentially passes through the through - hole of the U - shaped turntable, the through - hole of the housing and is thread - connected with the nut fitting.

[0014] Preferably, it further includes a light source bracket and a light source fixing member. The width of the mounting base of the reflector is greater than the width of the reflector. The light source brackets are located on the left and right sides of the reflector. The left and right sides of the mounting base of the reflector are respectively installed with light source brackets through bolts. The light source fixing member is connected to the light source bracket through bolts, and both ends of the infrared light source are clamped between the light source fixing member and the light source bracket through bolts.

[0015] Preferably, it further includes a tightening bolt. A threaded through hole is machined on the side surface of the light source fixing member, and the tightening bolt passes through the threaded through hole to cooperate with the end of the infrared light source.

[0016] Preferably, avoidance holes are machined at positions corresponding to the tightening bolts on the left and right sides of the housing.

[0017] The utility model has the following beneficial effects:

[0018] By improving the structure of the reflector, the utility model realizes the switching of different widths and lamp tube powers through modular design, facilitating the adaptability of large-size structures for multi-method scanning non-destructive testing;

[0019] By cooling the back surface of the reflector, the utility model ensures the stability of the device during long-term operation;

[0020] The structure of the utility model is ingenious, facilitating production, installation and cost control. Description of the Drawings

[0021] Figure 1 is a perspective view of a modular line-scanning thermal excitation device;

[0022] Figure 2 is an exploded view of a modular line-scanning thermal excitation device;

[0023] Figure 3 is a rear view of a modular line-scanning thermal excitation device;

[0024] Figure 4 is Figure 2 the enlarged view at A in ;

[0025] Figure 5 is Figure 3 the sectional view taken along B-B in ;

[0026] Figure 6 is Figure 2 the enlarged view at C in ;

[0027] Figure 7 is a schematic diagram of the reflector structure;

[0028] Figure 8 is a connection diagram of a modular line-scanning thermal excitation device.

[0029] In the figure: 1 - outer shell, 2 - cooling fan, 3 - cooling fan fixing part, 4 - reflector mounting base, 5 - reflector, 6 - infrared light source, 7 - light source bracket, 8 - light source fixing part, 9 - long bolt, 10 - tightening bolt, 11 - rotating frame, 12 - rotating shaft, 13 - nut fitting, 14 - avoidance hole, 15 - front vent, 16 - rear vent, 41 - middle vent, 81 - threaded through hole. Detailed implementation mode

[0030] To make the purpose, technical solution and advantages of the present utility model clearer, the present utility model will be described below through specific embodiments shown in the drawings. However, it should be understood that these descriptions are exemplary and not intended to limit the scope of the present utility model. In addition, in the following description, the descriptions of well-known structures and technologies are omitted to avoid unnecessarily confusing the concept of the present utility model.

[0031] Detailed implementation mode one: In combination with Figures 1-6 To illustrate this implementation mode, a modular line-scanning thermal excitation device of this implementation mode includes an outer shell 1, a cooling fan 2, a reflector 5 and an infrared light source 6. The cooling fan 2 is arranged at the rear side of the outer shell 1, and the reflector 5 and the infrared light source 6 are arranged at the front side of the outer shell 1. The infrared light source 6 is located in front of the reflector 5;

[0032] The infrared light source 6 is a 26 cm short-wave infrared light source; use the light source fixing part 8 to wrap both ends of the 26 cm short-wave infrared light source 6 and install it on the light source bracket 7 with an internal hexagonal bolt. Adjust the bolt and nut kits on both sides to fix the 26 cm short-wave infrared light source 6, that is, rotate the tightening bolt 10 to tighten the end of the infrared light source 6 to complete the installation;

[0033] The number of reflectors 5 is two. The two inclined reflectors 5 are symmetrically arranged. The front side of the reflector 5 is parabolic, and the rear side (back side) of the reflector 5 is linear. The infrared light source 6 is located between the two reflectors 5; around the 26 cm halogen lamp tube x 2 / 80 parabolic wing-type modular reflector design, a focused thermal excitation design (focused light spot) with a width of 105 mm is generated in front of the infrared light source 6, and the excitation effect is concentrated; a splicable modular design, multiple detection modules can be used in combination; the lamp tube can be designed by adjusting the base to be stacked, and multiple excitation sources have high adaptability when used in combination; as Figure 7 shown, by adjusting the parabolic parameters in the wing-shaped reflector, the focused thermal excitation width in front of the infrared light source 6 can be adjusted. The x 2 / 80 parabolic wing-type modular reflector design mentioned in the present utility model is used for strip-shaped focused excitation with a width of 105 mm and unlimited distance. Adjust the parabolic parameter to x 2At 65 °C, a strip-shaped focused excitation with a width of 30 mm is obtained at a distance of 285 mm in front of the infrared lamp source 6; therefore, by replacing the appropriate wing-shaped reflector, the required excitation distance and excitation width can be obtained, effectively reducing the cost of the excitation source;

[0034] It also includes a reflector mounting base 4. The reflector mounting base 4 is bolted to the middle of the housing 1. One end of the reflector 5 is bolted to the housing 1, and the other end of the reflector 5 is bolted to the reflector mounting base 4. The included angle between the reflector 5 and the reflector mounting base 4 is between 30° and 45°;

[0035] It also includes a radiator fan fixing part 3 and a long bolt 9 (hexagon socket head bolt). A rear ventilation opening 16 is machined on the rear side wall of the housing 1. A radiator fan 2 is arranged at the corresponding position of the rear ventilation opening 16. The long bolt 9 sequentially passes through the through hole on the rear side wall of the housing 1, the mounting hole of the radiator fan 2, and the mounting hole or threaded hole of the radiator fan fixing part 3 and is threadedly connected with a nut to fix the radiator fan 2; the radiator fan 2 is installed on the device housing 1 through the radiator fan fixing part 3 by using a hexagon socket head bolt;

[0036] A middle ventilation opening 41 is machined on the reflector mounting base 4. Front ventilation openings 15 are respectively machined on the upper and lower side walls of the housing 1. The front ventilation openings 15 are located between the two connecting parts of the reflector mounting base 4, the reflector 5 and the housing 1. The front ventilation openings 15, the middle ventilation opening 41, and the rear ventilation opening 16 are sequentially connected to form a heat dissipation air duct; by cooling the back of the reflector, the stability of the device during long-term operation is ensured;

[0037] It also includes a turntable 11, a rotating shaft 12, and a nut fitting 13. Nut fittings 13 are fixedly arranged on the left and right sides of the housing 1. The two sides of the U-shaped turntable 11 are respectively arranged corresponding to the left and right sides of the housing 1. A gasket is arranged between the U-shaped turntable 11 and the housing 1. The rotating shaft 12 sequentially passes through the through hole of the U-shaped turntable 11, the through hole of the housing 1, and is threadedly connected with the nut fitting 13; it can be used to adjust the angle; as Figure 8 shown, disassemble the U-shaped turntable 11, use simple sheet metal parts to open M8 threaded through holes at both ends, and use the rotating shaft 12 to parallelly connect multiple lamp units. After adjusting the angle to connect the excitation areas of the two units, the excitation width can be increased. This solution is mainly used when the required excitation width > 105 mm;

[0038] It also includes a light source bracket 7 and a light source fixing member 8. The width of the reflector mounting base 4 is greater than the width of the reflector 5. The light source brackets 7 are located on the left and right sides of the reflector 5. The left and right sides of the reflector mounting base 4 are respectively installed with light source brackets 7 through bolts. The light source fixing member 8 is connected to the light source bracket 7 through bolts, and both ends of the infrared light source 6 are clamped between the light source fixing member 8 and the light source bracket 7 through bolts. The reflector 5 and the light source bracket 7 are installed on the reflector mounting base 4 using hexagon socket head cap screws. The infrared light source 6 is convenient to replace. By improving the reflector structure, the present utility model realizes the switching of different widths and lamp tube powers through modular design, which is convenient for the adaptability of large-size structure multi-method scanning non-destructive testing;

[0039] It also includes a tightening bolt 10. A threaded through hole 81 is machined on the side of the light source fixing member 8. The tightening bolt 10 is threadedly connected to the threaded through hole 81. The tightening bolt 10 passes through the threaded through hole 81 and mates with the left or right end of the infrared light source 6; it is suitable for fixing various models and sizes;

[0040] Avoidance holes 14 are machined at the positions corresponding to the tightening bolts 10 on the left and right sides of the housing 1, which is convenient for installation, adjustment and disassembly.

[0041] It should be noted that in the above embodiments, as long as the technical solutions are not contradictory, they can be arranged and combined. Those skilled in the art can exhaust all possibilities according to the mathematical knowledge of permutation and combination. Therefore, the present utility model will no longer describe the technical solutions after permutation and combination one by one, but it should be understood that the technical solutions after permutation and combination have been disclosed by the present utility model.

[0042] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A modular line scanning thermal actuation device, characterized in that: The invention comprises a housing (1), a heat dissipation fan (2), a reflective plate (5) and an infrared light source (6); the heat dissipation fan (2) is arranged on the rear side of the housing (1); the reflective plate (5) and the infrared light source (6) are arranged on the front side of the housing (1); and the infrared light source (6) is located on the front side of the reflective plate (5).

2. A modular line scanning thermal actuation device according to claim 1, characterized in that: The infrared light source (6) is a 26 cm short-wave infrared light source.

3. A modular line scanning thermal actuation device according to claim 2, characterized in that: There are two reflective plates (5), the two reflective plates (5) are symmetrically arranged, the front sides of the reflective plates (5) are parabolic, and the infrared light source (6) is located between the two reflective plates (5).

4. A modular line scanning thermal actuation device according to claim 3, characterized in that: It also comprises a reflector mounting base (4), which is connected to the middle of the housing (1), one end of the reflector (5) is connected to the housing (1), and the other end of the reflector (5) is bolted to the reflector mounting base (4).

5. A modular line scanning thermal actuation device according to claim 4, characterized in that: It also includes a heat dissipation fan fixing member (3) and a long bolt (9); a rear vent (16) is processed on the rear side wall of the housing (1); a heat dissipation fan (2) is arranged at a position corresponding to the rear vent (16); and the long bolt (9) passes through the through hole on the rear side wall of the housing (1), the mounting hole of the heat dissipation fan (2), and the mounting hole of the heat dissipation fan fixing member (3) in sequence.

6. A modular line scanning thermal actuation device according to claim 5, characterized in that: The reflector mounting base (4) is provided with a middle vent (41), and the upper and lower side walls of the housing (1) are respectively provided with front vents (15); the front vent (15), the middle vent (41), and the rear vent (16) are connected in sequence to form a heat dissipation duct.

7. A modular line scanning thermal actuation device according to claim 1, characterized in that: The invention also comprises a rotating frame (11), a rotating shaft (12) and a nut fitting (13), wherein the nut fitting (13) is fixedly arranged on the left and right sides of the outer shell (1), and the two sides of the U-shaped rotating frame (11) are respectively arranged corresponding to the left and right sides of the outer shell (1), and the rotating shaft (12) passes through the through hole of the U-shaped rotating frame (11) and the through hole of the outer shell (1) in sequence and is threadedly connected with the nut fitting (13).

8. The modular line scanning thermal actuation device according to claim 1, characterized in that: It also comprises a light source bracket (7) and a light source fixing member (8), wherein the light source bracket (7) is respectively installed on the left and right sides of the reflector mounting base (4), and the light source fixing member (8) is connected to the light source bracket (7), so that the two ends of the infrared light source (6) are clamped between the light source fixing member (8) and the light source bracket (7).

9. A modular line scanning thermal actuation device according to claim 8, characterized in that: It also includes a tightening bolt (10). A threaded through hole (81) is machined on the side of the light source fixing member (8). The tightening bolt (10) passes through the threaded through hole (81) to establish a fit with the end of the infrared light source (6).

10. A modular line scanning thermal actuation device according to claim 9, characterized in that: Avoidance holes (14) are processed at positions on the left and right sides of the housing (1) corresponding to the tightening bolts (10).

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