Flash lamp pulse and heat gun heat convection integrated thermal excitation device

Abstract

The utility model provides a flash lamp pulse and hot air gun heat convection integrated thermal excitation device which comprises an outer layer structure and an inner layer structure, the outer layer structure comprises an outer layer cover assembly and a plurality of vent hoods communicated with the outer layer cover assembly through connecting pipes, the outer layer cover assembly comprises an outer layer cover, and the outer layer cover assembly comprises a plurality of vent hoods communicated with the vent hoods through connecting pipes. The ventilation hoods are evenly arranged on the side face of the outer layer hood in the circumferential direction of the outer layer hood, the inner layer structure comprises an inner layer hood located in the outer layer hood, and multiple sets of air outlet assemblies evenly distributed in the circumferential direction are formed in the circumferential side faces of the outer layer hood and the inner layer hood and correspond to the ventilation hoods; compared with the prior art, the infrared thermal wave nondestructive testing device has the following beneficial effects that the infrared thermal wave nondestructive testing device not only can linearly adjust the thermal convection quantity, but also can adjust the heating area density so as to meet different detection requirements, is suitable for two types of thermal excitation sources, is particularly suitable for infrared thermal wave nondestructive testing of medium and large sample pieces, is better in sealing property, and is convenient to operate. And the surface of the sample piece is uniformly heated.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal excitation devices, in particular to a flash lamp pulse and hot air gun thermal convection integrated thermal excitation device. Background Art

[0002] In the field of nondestructive testing, pulse thermography, as an infrared thermal wave nondestructive testing method, has developed relatively maturely. During the testing process, the thermal pulse signal should be applied by a thermal excitation source, irradiated on the test surface of the test object, and heated. The heating time is generally 2ms. After heating, the test object cools naturally. In this process, the heat energy will be transferred to the inside of the test object. During this period, the temperature field distribution on the surface of the test object is collected by an infrared thermal imager. Since the thermal conductivity of the defect is different from that of the material of the test object, the temperature of the defect area is different from that of the normal area. According to the information collected by the thermal imager, the size and depth of the defect are calculated by computer. However, in the actual testing in the field of nondestructive testing, there is no integrated thermal excitation device of flash pulse and hot air gun thermal convection, and the existing thermal excitation device is not well sealed, and the surface of the sample is heated unevenly, which is not conducive to improving the accuracy of the test results, and cannot meet various testing needs. Utility Model Content

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a flash lamp pulse and hot air gun thermal convection integrated thermal actuation device to solve the problem in the prior art that there is no flash lamp pulse and hot air gun thermal convection integrated thermal actuation device during actual detection.

[0004] In order to achieve the above purpose and other related purposes, the utility model provides the following technical solutions:

[0005] A thermal excitation device integrating flash lamp pulse and hot air gun thermal convection, comprising an outer structure and an inner structure, wherein the outer structure comprises an outer cover assembly and a plurality of ventilation covers connected to the outer cover assembly via a connecting pipe, the outer cover assembly comprises an outer cover, a plurality of ventilation covers are evenly arranged on the side of the outer cover along the circumference of the outer cover, the inner structure comprises an inner cover located inside the outer cover, a plurality of groups of circumferentially evenly distributed air outlet assemblies are provided on the circumferential sides of the outer cover and the inner cover corresponding to the ventilation covers, and a plurality of circumferentially evenly distributed mounting hole assemblies for mounting the flash lamp are provided on the top of the inner cover.

[0006] In one embodiment of the utility model, the outer cover assembly also includes a neck piece installed on the top of the outer cover and integrally formed with the outer cover, and a plurality of first through holes evenly distributed along the circumferential direction are opened on the circumferential side surface of the neck piece, and the ventilation cover is connected to the first through holes through a connecting pipe.

[0007] In one embodiment of the utility model, the outer structure also includes a top cover installed on the top of the neck piece, and a second through hole for the hot air gun to pass through is opened at the center position of the top cover. The top cover in this technical solution can be used to support the hot air gun when using the hot air gun, thereby improving the detection efficiency and thermal insulation performance.

[0008] In one embodiment of the utility model, the inner layer structure also includes a barrier cover, which is installed in the neck part and located between the top cover and the top of the inner cover, a third through hole for the wire to pass through is opened at the center position of the barrier cover, a first welding handle is installed at the top of the barrier cover, and the interior of the barrier cover is hollow. In this technical solution, the barrier cover can block heat convection from passing vertically downward through the gap at the top of the inner cover when using a hot air gun; when using a flash light, it can accommodate electronic control components.

[0009] In one embodiment of the utility model, a guide rail is installed on the inner bottom side of the outer cover, and a plurality of balls in contact with the inner cover are slidably connected in the guide rail. A fourth through hole for installing an infrared thermal imager camera is opened at the center position of the top of the inner cover, and a second welding handle is installed on the top of the inner cover. The guide rail and the balls in this technical solution are used to support the inner cover, and when using a hot air gun, the friction force is reduced by rolling friction, thereby facilitating the circular rotation of the inner cover.

[0010] In one embodiment of the utility model, the shapes of the outer cover and the inner cover are both cone-like, each group of the air outlet assemblies includes multiple air outlets, the lengths of the multiple air outlets gradually increase along the busbar direction of the outer cover and the inner cover, and each group of the mounting hole assemblies includes multiple mounting holes.

[0011] As described above, the utility model is a thermal excitation device integrating flash lamp pulse and hot air gun thermal convection, which has the following beneficial effects: the utility model has two operating modes, namely, a mode in which a flash lamp is used as a thermal excitation source and a mode in which a hot air gun is used as a thermal excitation source, and the utility model adjusts the air outlet on the outer cover and the air outlet on the inner cover from separation to overlap, thereby not only linearly adjusting the thermal convection amount, but also adjusting the heated area density to meet different detection needs. Therefore, the utility model is suitable for two major types of thermal excitation sources, namely, flash lamp pulse and hot air gun thermal convection, and is particularly suitable for infrared thermal wave nondestructive testing of medium and large samples. It not only has good sealing performance, but also makes the surface of the sample heated evenly, which is beneficial to improve the accuracy of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a frontal perspective schematic diagram of a flash lamp pulse and hot air gun thermal convection integrated thermal actuation device disclosed in an embodiment of the utility model;

[0013] Figure 2 It is a top-down perspective schematic diagram of a flash lamp pulse and hot air gun thermal convection integrated thermal actuation device disclosed in an embodiment of the utility model;

[0014] Figure 3 The figure shows a frontal stereoscopic schematic diagram of a flash lamp pulse and hot air gun thermal convection integrated thermal actuation device disclosed in an embodiment of the utility model without a top cover;

[0015] Figure 4 It is a top-down perspective schematic diagram of the inner cover in the flash lamp pulse and hot air gun thermal convection integrated thermal actuation device disclosed in the embodiment of the utility model;

[0016] Figure 5 Shown is a three-dimensional schematic diagram of a ventilation hood in a flash lamp pulse and hot air gun thermal convection integrated thermal actuation device disclosed in an embodiment of the utility model;

[0017] Figure 6 It shows a three-dimensional schematic diagram of a top cover (upper) and a barrier cover (lower) in a flash lamp pulse and hot air gun thermal convection integrated thermal actuation device disclosed in an embodiment of the utility model;

[0018] Figure 7 Shown is a three-dimensional schematic diagram of guide rails and balls in a flash lamp pulse and hot air gun thermal convection integrated thermal actuation device disclosed in an embodiment of the utility model.

[0019] Component number description

[0020] 1. Outer structure; 101. Outer cover assembly; 1011. Outer cover; 1012. Neck piece; 102. Connecting pipe; 103. Ventilation cover; 104. Top cover; 2. Second through hole; 3. Inner structure; 301. Inner cover; 302. Interlayer cover; 4. Air outlet assembly; 401. Air outlet; 5. First through hole; 6. Third through hole; 7. First welding handle; 8. Mounting hole assembly; 801. Mounting hole; 9. Second welding handle; 10. Fourth through hole; 11. Guide rail; 12. Ball bearing. DETAILED DESCRIPTION

[0021] The following specific embodiments illustrate the implementation of the present invention, and those familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0022] See also Figures 1 to 7The utility model provides a flash lamp pulse and hot air gun thermal convection integrated thermal excitation device, including an outer layer structure 1 and an inner layer structure 3, the outer layer structure 1 includes an outer layer cover assembly 101 and a plurality of ventilation covers 103 connected to the outer layer cover assembly 101 through a connecting pipe 102, the outer layer cover assembly 101 includes an outer layer cover 1011, and a plurality of ventilation covers 103 are evenly arranged on the side of the outer layer cover 1011 along the circumference of the outer layer cover 1011, the outer layer cover assembly 101 also includes a neck piece 1012 installed at the top of the outer layer cover 1011 and integrally formed with the outer layer cover 1011, a plurality of first through holes 5 evenly distributed along the circumference and with a diameter of 1 cm are opened on the circumferential side of the neck piece 1012, the ventilation covers 103 are connected to the first through holes 5 through the connecting pipe 102 The outer layer structure 1 is connected with the hole 5, wherein the outer cover 1011 serves as the outer shell part of the thermal excitation device, and its sealing performance can improve the accuracy of detection. The ventilation cover 103 can improve the thermal insulation and airtightness of the device when using a hot air gun. The connecting pipe 102 can evenly transport heat convection when using a hot air gun. In this embodiment, the number of the ventilation cover 103 and the connecting pipe 102 are both 6. The outer layer structure 1 also includes a top cover 104 installed on the top of the neck part 1012. A second through hole 2 for the hot air gun mouth to pass through is opened at the center position of the top cover 104, wherein the top cover 104 is used to support the hot air gun when using the hot air gun, which can improve the detection efficiency and thermal insulation performance, and the inner circle diameter of the top cover 104 is 10 cm, which is slightly larger than the diameter of the hot air gun mouth.

[0023] exist Figure 4 and Figure 7In the embodiment, the inner structure 3 includes an inner cover 301 located in the outer cover 1011, wherein after the assembly is completed, the bottom of the inner cover 301 is not in the same horizontal plane as the bottom of the outer cover 1011, and a guide rail 11 is installed on the inner bottom side of the outer cover 1011, and a plurality of balls 12 in contact with the inner cover 301 are slidably connected in the guide rail 11, wherein the guide rail 11 and the balls 12 are used to support the inner cover 301, and when using a hot air gun, the friction force is reduced by rolling friction, so as to facilitate the circumferential rotation of the inner cover 301, and the top of the inner cover 301 is provided with a plurality of groups of mounting hole assemblies 8 evenly distributed along the circumference and used for mounting the flash lamp, and each group of mounting hole assemblies 8 includes a plurality of mounting holes 801, and the top center position of the inner cover 301 is provided with a plurality of mounting hole assemblies 8 evenly distributed along the circumferential direction ... A fourth through hole 10 with a diameter of 2 cm is used to install an infrared thermal imager camera, and a second welding handle 9 is installed on the top of the inner cover 301, wherein the mounting hole assemblies 8 are 8 groups, and each group of mounting hole assemblies 8 includes 2 mounting holes 801. When using a hot air gun, the second welding handle 9 above the inner cover 301 is rotated in a circular direction, and the air outlet 401 between the inner cover 301 and the outer cover 1011 changes from separation to overlap, thereby linearly adjusting the heat convection amount; when using a flash lamp, the inner cover 301 is rotated to separate it from the air outlet 401 of the outer cover 1011, and different numbers of flash lamps are evenly installed in the mounting holes 801 at the top of the inner cover 301 to adjust the density of the heated area to meet different detection requirements.

[0024] exist Figure 3 , Figure 4 and Figure 6 In the embodiment, a plurality of groups of air outlet assemblies 4 are uniformly distributed along the circumferential direction on the circumferential side surfaces of the outer cover 1011 and the inner cover 301 corresponding to the ventilation cover 103. The shapes of the outer cover 1011 and the inner cover 301 are both similar to cones. Each group of air outlet assemblies 4 includes a plurality of air outlets 401. The lengths of the plurality of air outlets 401 gradually increase along the busbar direction of the outer cover 1011 and the inner cover 301. There are 6 groups of air outlet assemblies 4, and each group of air outlet assemblies 4 includes 6 air outlets 401. The inner structure 3 also includes a partition cover 302, which is installed in the neck member 1012 and located on the top cover. 104 and the top of the inner cover 301, a third through hole 6 with a diameter of 2 cm for the wire to pass through is opened at the center of the interlayer cover 302, a first welding handle 7 is installed on the top of the interlayer cover 302, and the interior of the interlayer cover 302 is hollow, wherein, when using a hot air gun, the interlayer cover 302 can block the heat convection from passing vertically downward through the gap at the top of the inner cover 301; when using a flashlight, the interlayer cover 302 can accommodate the electronic control components, and the wire is connected to the power supply end of the infrared detector through the central through hole, and it can be taken out and put back through the first welding handle 7 above the interlayer cover 302.

[0025] Specifically, the integrated device has two operation modes, namely, a mode using a flash lamp as a thermal excitation source and a mode using a hot air gun as a thermal excitation source. When the flash lamp pulse mode is used, firstly, the top cover 104 and the interlayer cover 302 are taken out from the outer cover 1011, and then the second welding handle 9 on the top of the inner cover 301 is moved until the 6 groups of air outlets 401 on the side of the inner cover 301 are completely separated from the air outlets 401 on the side of the outer cover 1011, and then the electronic control components are installed (connect the interface wires, and evenly install the flash lamps in the mounting holes 801 at the top of the inner cover 301, 4 flash lamps are installed for medium-sized samples, and 8 flash lamps are installed for large samples), and finally, the interlayer cover 302 and the top cover 104 are installed back to their original positions through the wires. The charging and discharging of the flash lamp can be controlled by a computer, and the energy of the flash lamp exposure can be controlled. When the energy is released, the infrared thermal imager camera starts to work, collects the thermal sequence diagram of the surface of the heated object, and finally diagnoses the internal defects of the object.

[0026] When using the hot air gun convection mode, if the heat flux of the heat convection needs to be adjusted, the top cover 104 and the interlayer cover 302 should be taken out from the outer cover 1011, first, the second welding handle 9 on the top of the inner cover 301 is moved to make the inner cover 301 and the air outlet 401 on the side of the outer cover 1011 interact, then all the flashlight wires are stored under the interlayer cover (except the second welding handle 9 and its wires), and the top cover 104 is installed back to its original position, and then the hot air gun muzzle is placed vertically through the center of the top cover 104, the time of applying heat convection is controlled by timing, and the size of the heat flux is controlled by the degree of overlap between the inner cover 301 and the air outlet 401 on the side of the outer cover 1011. After the heating is completed, the infrared thermal imager is controlled by a computer to collect the thermal sequence diagram, and finally the defects inside the sample are diagnosed, thereby completing the non-destructive testing of the test object, wherein the number and distribution density of the flashlights can be flexibly adjusted, and the heat flux of the hot air gun can be flexibly adjusted to meet a variety of testing needs.

[0027] The utility model has two operation modes, namely, a mode using a flash lamp as a thermal excitation source and a mode using a hot air gun as a thermal excitation source. The utility model adjusts the air outlet 401 on the outer cover 1011 and the air outlet 401 on the inner cover 301 from separation to overlap, so as to not only linearly adjust the heat convection amount, but also adjust the density of the heated area to meet different detection needs. Therefore, the utility model is suitable for two major types of thermal excitation sources, namely, flash lamp pulse and hot air gun thermal convection, and is particularly suitable for infrared thermal wave nondestructive testing of medium and large samples. It not only has good sealing performance, but also makes the surface of the sample heated evenly, which is beneficial to improving the accuracy of the detection results. In addition, the utility model is not only simple in structure and easy to install, but also has a large detection area, less materials and low cost.

[0028] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. All equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A flash lamp pulse and hot air gun thermal convection integrated thermal actuation device, comprising an outer layer structure (1) and an inner layer structure (3), characterized in that: The outer layer structure (1) comprises an outer layer cover assembly (101) and a plurality of ventilation covers (103) connected to the outer layer cover assembly (101) via a connecting pipe (102); the outer layer cover assembly (101) comprises an outer layer cover (1011); the plurality of ventilation covers (103) are evenly arranged on the side of the outer layer cover (1011) along the circumference of the outer layer cover (1011); the inner layer structure (3) comprises an inner layer cover (301) located inside the outer layer cover (1011); the outer layer cover (1011) and the inner layer cover (301) are provided with a plurality of groups of air outlet assemblies (4) evenly distributed along the circumference on the circumferential side surfaces corresponding to the ventilation covers (103); the top end of the inner layer cover (301) is provided with a plurality of groups of mounting hole assemblies (8) evenly distributed along the circumference and used for mounting a flash lamp.

2. The flash lamp pulse and hot air gun thermal convection integrated thermal actuation device according to claim 1, characterized in that: The outer cover assembly (101) further comprises a neck member (1012) mounted on the top of the outer cover (1011) and formed integrally with the outer cover (1011); a plurality of first through holes (5) evenly distributed along the circumferential direction are provided on the circumferential side surface of the neck member (1012); and the ventilation cover (103) is connected to the first through holes (5) via a connecting pipe (102).

3. The flash lamp pulse and hot air gun thermal convection integrated thermal actuation device according to claim 2, characterized in that: The outer layer structure (1) further comprises a top cover (104) mounted on the top end of the neck member (1012), and a second through hole (2) for the hot air gun to pass through is provided at the center of the top cover (104).

4. The flash lamp pulse and hot air gun thermal convection integrated thermal actuation device according to claim 2, characterized in that: The inner layer structure (3) further comprises an interlayer cover (302), which is installed in the neck member (1012) and is located between the top cover (104) and the top of the inner layer cover (301); a third through hole (6) for a wire to pass through is provided at the center of the interlayer cover (302); a first welding handle (7) is installed at the top of the interlayer cover (302); and the interior of the interlayer cover (302) is hollow.

5. The flash lamp pulse and hot air gun thermal convection integrated thermal actuation device according to claim 1, characterized in that: A guide rail (11) is installed on the inner bottom side of the outer cover (1011), and a plurality of balls (12) in contact with the inner cover (301) are slidably connected inside the guide rail (11). A fourth through hole (10) for installing an infrared thermal imager camera is opened at the center position of the top end of the inner cover (301), and a second welding handle (9) is installed at the top end of the inner cover (301).

6. The flash lamp pulse and hot air gun thermal convection integrated thermal actuation device according to claim 1, characterized in that: The shapes of the outer cover (1011) and the inner cover (301) are both similar to cones. Each group of the air outlet assemblies (4) includes a plurality of air outlets (401). The lengths of the plurality of air outlets (401) gradually increase along the busbar direction of the outer cover (1011) and the inner cover (301). Each group of the mounting hole assemblies (8) includes a plurality of mounting holes (801).

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