Uniform square thermal excitation device
By designing a uniform square thermal excitation device that includes a fixed bracket, heat sink, reflector and multiple diffraction lenses, the problem of non-uniformity of traditional thermal excitation sources in large-area material testing is solved, and temperature control and uniformity and accurate positioning of the excitation area are achieved, thus enhancing adaptability.
Patent Information
- Application Number
- CN202421945946.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-13
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2034-08-13
AI Technical Summary
In existing technologies, traditional thermal excitation sources exhibit uneven thermal excitation during large-area material testing, resulting in uneven defect feature signals and poor adaptability to smaller defects.
A uniform square thermal excitation device is adopted, including a fixed bracket, heat sink, reflector, multiple diffraction lenses and rectifier, combined with a cooling fan to improve the non-uniformity of thermal excitation, and the excitation source spot is modulated into a square by multiple diffraction lenses to ensure the uniformity and accurate positioning of the excitation area.
This technology enables the equipment surface temperature to be controlled below 50℃, improving the uniformity of thermal excitation and the accurate positioning capability of the excitation area, enhancing adaptability, and reducing energy loss.
Smart Images
Figure CN223808374U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to a uniform square thermal excitation device, belonging to the field of nondestructive testing. BACKGROUND
[0002] The infrared nondestructive testing technology refers to the principle that when a substance is subjected to thermal excitation, it will emit infrared light outward, and when there is a defect in the material, it has different infrared characteristics compared to the defect-free state. On the premise of not damaging or affecting the use performance of the detected object, whether there is a defect or unevenness in the detected object, and giving information such as defect size, location, nature and quantity.
[0003] At present, there are various means to heat the measured object, such as photoelectric heating, eddy current heating, laser ultrasonic heating, etc. Photoelectric heating, i.e. heating mode with high light-to-heat conversion efficiency elements such as halogen lamps, has the advantages of high reliability, stable thermal excitation and low cost, but the traditional thermal excitation source generates a Gaussian light source acting on the material surface with the characteristics of high central excitation efficiency and low peripheral excitation efficiency, which is easy to cause uneven defect characteristic signals when detecting large-area materials.
[0004] Therefore, it is urgent to propose a uniform square thermal excitation device to solve the above technical problems. SUMMARY
[0005] The purpose of the present application is to solve the problem of uneven excitation of large surfaces and poor adaptability to small defects formed by conventional technology. In the following, a brief summary of the present application is given to provide a basic understanding of some aspects of the present application. It should be understood that this summary is not an exhaustive summary of the present application. It is not intended to determine the key or important parts of the present application, nor to limit the scope of the present application.
[0006] The technical scheme of the present application:
[0007] A uniform square thermal excitation device, comprising a fixed support, a heat sink, an integrated reflector, a light source, a light source fixing piece, a lens holder, a multiple diffraction lens, a lens front cover plate and a square fairing, the fixed support and the heat sink are fixedly installed at the upper end of the integrated reflector, the lower end of the integrated reflector is connected in series with the lens holder, the multiple diffraction lens and the lens front cover plate, the light source is fixed on the light source fixing piece, the light source fixing piece is fixed on one side of the integrated reflector, and the fairing is fixedly connected with the integrated reflector and the lens holder.
[0008] Preferably, the multiple diffraction lens is composed of two diffraction lenses, and the two diffraction lenses are fixed at the upper and lower ends of the lens holder, respectively.
[0009] Preferably, the heat sink is a heat sink fan.
[0010] Preferably, the light source is a bulb type light source, and the light source and the detection surface are spaced apart by a distance of 1.5 m.
[0011] Preferably, the fairing is a square fairing.
[0012] The present application has the following beneficial effects:
[0013] The present application combines the reflector with the heat sink, and cooperates with the heat dissipation fan to realize that the surface temperature of the equipment is not greater than 50 DEG C when the excitation device works for a long time.
[0014] The present application uses multiple diffraction lenses to improve the problem of uneven thermal excitation of the Gaussian light source.
[0015] The present application uses a square fairing to modulate the light spot generated by the excitation source into a square, which is beneficial to the accurate positioning of the material surface excitation area in the data acquisition process. BRIEF DESCRIPTION OF DRAWINGS
[0016] Fig. 1 It is a structure diagram of a uniform square thermal excitation device.
[0017] Fig. 2 It is a heat dissipation mode diagram of an integrated reflector structure. DETAILED DESCRIPTION
[0018] In order to make the purpose, technical scheme and advantages of the present application more clear and obvious, the present application will be described below by specific embodiments shown in the drawings. However, it should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present application. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present application.
[0019] The fixed connection mentioned in the present application includes but is not limited to bolt connection, flange connection, rivet connection, adhesive connection and welding connection, and other conventional fixed connection methods, and when the specific connection method is not specified, it is assumed that at least one connection method can be found in the existing connection method to realize the function, and the person skilled in the art can select it according to the needs.
[0020] Specific implementation one: combination Figs. 1-2The embodiment is explained, a uniform square thermal excitation device of the embodiment, including fixed support 1, fin 2, integrated reflector 3, light source 4, light source fixing piece 5, lens holder 6, multiple diffraction lenses 7, lens front cover plate 8 and square fairing 9, fixed support 1, fin 2 are fixedly installed on the upper end of integrated reflector 3 by using internal hexagonal bolt, the lower end of integrated reflector 3 is connected in series with lens holder 6, multiple diffraction lenses 7 and lens front cover plate 8 by internal hexagonal bolt, light source 4 is fixed on light source fixing piece 5, light source fixing piece 5 is fixed on one side of integrated reflector 3, fairing 9 is fixedly connected with integrated reflector 3 and lens holder 6, and high-efficiency, uniform thermal excitation or illumination effect is realized.
[0021] Specific implementation method two: in combination Figs. 1-2 The embodiment is explained, a uniform square thermal excitation device of the embodiment, multiple diffraction lenses 7 are composed of two diffraction lenses, the two diffraction lenses are fixed at the upper and lower ends of lens holder 6, complex optical modulation and shaping effect can be realized, and various high-demand application scenarios are met.
[0022] Specific implementation method three: in combination Figs. 1-2 The embodiment is explained, a uniform square thermal excitation device of the embodiment, fin 2 is a cooling fan, the heat dissipation effect can be fully played, and the overall performance of the equipment is improved.
[0023] Specific implementation method four: in combination Figs. 1-2 The embodiment is explained, a uniform square thermal excitation device of the embodiment, light source 4 is a bulb type light source, the light source 4 and the detection surface are spaced apart by 1.5 m, so that the device can meet the requirements and maintain good performance in actual application.
[0024] Specific implementation method five: in combination Figs. 1-2 The embodiment is explained, a uniform square thermal excitation device of the embodiment, fairing 9 is a square fairing, the thermal excitation efficiency and uniformity are improved, and energy loss is also reduced.
[0025] It should be noted that, in the above embodiments, any non-conflicting technical solutions can be arranged and combined, and those skilled in the art can exhaust all possibilities according to the mathematical knowledge of arrangement and combination, so that the technical solutions after arrangement and combination are not explained one by one, but it should be understood that the technical solutions after arrangement and combination have been disclosed by the present application.
[0026] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Those skilled in the art can make various changes and modifications to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A uniform square thermal excitation device characterized by: The utility model relates to a kind of light source fixing device, including fixed support (1), fin (2), integrated reflector (3), light source (4), light source fixing piece (5), lens holder (6), multiple diffraction lens (7), lens front cover plate (8) and square fairing (9), fixed support (1), fin (2) are fixedly installed in the upper end of integrated reflector (3), integrated reflector (3) lower end is connected with lens holder (6), multiple diffraction lens (7) and lens front cover plate (8), light source (4) is fixed in light source fixing piece (5), light source fixing piece (5) is fixed in the side of integrated reflector (3), fairing (9) is fixedly connected with integrated reflector (3), lens holder (6).
2. A uniform square thermal excitation device as claimed in claim 1, characterized in that: The multiple diffraction lens (7) is composed of two diffraction lenses, and the two diffraction lenses are fixed at the upper and lower ends of the lens holder (6).
3. A uniform square thermal excitation device as claimed in claim 2, characterized in that: The fin (2) is a cooling fan.
4. A uniform square thermal excitation device as claimed in claim 1, characterized in that: The light source (4) is a bulb-type light source, and the light source (4) and the detection surface are spaced apart by a distance of 1.5 m.
5. A uniform square thermal excitation device as defined in claim 1, wherein The fairing (9) is a square fairing.