CN213301467U - Fluorescent brightness detector for fluorescent penetrating fluid by direct method - Google Patents
Fluorescent brightness detector for fluorescent penetrating fluid by direct method Download PDFInfo
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- CN213301467U CN213301467U CN202022544105.7U CN202022544105U CN213301467U CN 213301467 U CN213301467 U CN 213301467U CN 202022544105 U CN202022544105 U CN 202022544105U CN 213301467 U CN213301467 U CN 213301467U
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- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The utility model discloses a fluorescence intensity detection device for fluorescent penetrant by direct method, which comprises an ultraviolet light source (1), a sample holder (2) and a photoelectric detector (3); the surface of the sample holder (2) is provided with a flat-bottom groove (21), the irradiation direction of the ultraviolet light source (1) is inclined to the bottom surface of the flat-bottom groove (21), and the photoelectric detector (3) is arranged in the direction vertical to the bottom surface of the flat-bottom groove (21). The utility model discloses can carry out fluorescence luminance to direct to the fluorescence penetrant and detect, detect simple process, the accuracy that detects is high.
Description
Technical Field
The utility model relates to a fluorescence brightness detection, concretely relates to direct method fluorescence penetrant fluorescence brightness detection device.
Background
The fluorescent penetrant is applied to the surface of a test piece, so that the fluorescent penetrant permeates into the micro defects of the surface of the test piece, the fluorescent penetrant on the surface of the test piece is removed by using a remover, the fluorescent penetrant in the micro defects is then caused to permeate back to the surface of the test piece by using a developer, and the fluorescence emitted by the fluorescent penetrant at the defects is detected by using a black light lamp so as to detect the opening defects on the surface of the test piece. The fluorescence brightness of the fluorescent penetrant has an important influence on the display and detection of the opening defect on the surface of the test piece, and the fluorescence brightness of the fluorescent penetrant needs to be detected in order to ensure the detection effect of the fluorescent penetrant.
The fluorescence brightness detection method of the fluorescent penetrant commonly used at present is generally carried out by an indirect measurement method. The specific detection process comprises diluting fluorescent penetrating fluid by 25 times with acetone or alcohol, soaking filter paper in the diluted fluorescent penetrating fluid, and air drying. The filter paper was irradiated with ultraviolet rays, and the fluorescence intensity of the filter paper was measured, and the fluorescence intensity of the fluorescent penetrant was estimated from the fluorescence intensity of the filter paper.
The existing fluorescent brightness detection method of the fluorescent penetrating fluid needs to dilute by using volatile and flammable liquid acetone or alcohol and detect by using filter paper, and has the disadvantages of more operation steps, complex operation and long detection time. In addition, acetone and alcohol are flammable liquids, which are dangerous to store and use and not beneficial to mobile detection. The diluted fluorescent penetrant and the used filter paper both form a certain waste and increase the burden of the environment.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a direct method fluorescence penetrant fluorescence luminance detection device is provided, it is convenient, accurate to detect, and the detection cost is also lower.
In order to solve the technical problem, the utility model provides a fluorescence brightness detection device for fluorescent penetrant by direct method, which comprises an ultraviolet light source, a sample holder and a photoelectric detector; the surface of the sample holder is provided with a flat-bottom groove, the irradiation direction of the ultraviolet light source is inclined to the bottom surface of the flat-bottom groove, and the photoelectric detector is arranged in the direction vertical to the bottom surface of the flat-bottom groove.
Preferably, the fluorescence brightness detection device for direct method fluorescent penetrant of the present invention further includes an ultraviolet detector, and the setting direction of the ultraviolet detector and the irradiation direction of the ultraviolet light source are symmetrical with respect to the setting direction of the photoelectric detector. In the preferable technical scheme, ultraviolet rays emitted by the ultraviolet light source can be emitted along the setting direction of the ultraviolet detector after being reflected by the liquid level of the fluorescent penetrating fluid, the irradiation intensity of the ultraviolet rays detected by the ultraviolet detector is larger, and the detection sensitivity is also higher.
Further preferably, the fluorescence brightness detection device for direct method fluorescent penetrant of the present invention further includes a third converging lens, the third converging lens is disposed in the detection direction of the ultraviolet detector, the ultraviolet detector and between the sample holders. In the preferred technical scheme, the third converging lens can converge the ultraviolet rays reflected by the liquid level of the fluorescent penetrating fluid to the ultraviolet detector, so that the detection sensitivity of the ultraviolet detector is improved.
Preferably, an ultraviolet filter is further disposed in the arrangement direction of the photodetector. Through the preferred technical scheme, light received by the photoelectric detector must pass through the ultraviolet filter, so that a small amount of ultraviolet rays mixed in fluorescence can be filtered while the fluorescence emitted by the fluorescent penetrating fluid can enter the photoelectric detector through the ultraviolet filter, and the interference of the ultraviolet rays on a fluorescence brightness detection result is avoided.
Preferably, the fluorescence brightness detection device for direct method fluorescent penetrant of the present invention further includes a first converging lens, the first converging lens is disposed on the ultraviolet irradiation light path emitted by the ultraviolet light source, the ultraviolet light source and between the sample holders. Through the preferable technical scheme, ultraviolet rays emitted by the ultraviolet light source can be converged at the fluorescent penetrating fluid, the irradiation intensity of the ultraviolet rays irradiated into the fluorescent penetrating fluid is improved under the condition that the ultraviolet light sources with the same power are used, and the fluorescence brightness excited by the fluorescent penetrating fluid is improved.
As a preferred scheme, the utility model discloses a direct method fluorescent penetrant fluorescence luminance detection device still includes the second and assembles lens, the second assembles lens setting and is in photoelectric detector's below, photoelectric detector with between the sample frame. In the preferred technical scheme, the second converging lens can converge the fluorescence emitted by the fluorescent penetrating fluid to the photoelectric detector, so that the detection sensitivity of the photoelectric detector is improved.
Preferably, the ultraviolet light source is an ultraviolet LED. In the preferred technical scheme, the wavelength of the ultraviolet rays emitted by the ultraviolet LED is constant, the stability of the irradiation intensity is high, and the irradiation intensity of the emitted ultraviolet rays can be conveniently adjusted.
Through the technical scheme, the utility model discloses a direct method fluorescence penetrant fluorescence luminance detection device can directly detect fluorescence penetrant, has left out and has diluted, use filter paper to soak and dry the process fluorescence penetrant among the traditional detection method, has simplified the detection procedure for detection speed. And inflammable alcohol or acetone is not required, so that waste caused by dilution of the fluorescent penetrating fluid and filter paper is reduced, and the environmental burden is reduced. The fluorescent penetrant is directly irradiated by ultraviolet rays, so that the influence of the container wall on incident ultraviolet rays is avoided, and the ultraviolet irradiation intensity for exciting the fluorescent penetrant to emit fluorescence is more determined. Meanwhile, the brightness detection can be directly carried out on the fluorescence generated by the fluorescent penetrating fluid, so that the influence of the container wall on the brightness of the fluorescence is avoided, and the accuracy of the detection result is improved. The utility model discloses a direct method fluorescence penetrant fluorescence luminance detection device can directly detect fluorescence penetrant, and the detection cost is lower, and the accuracy that detects is higher, and it is also more convenient to detect. The dependence on reagents and instruments in the detection process is reduced, and the detection and use under a mobile scene are facilitated.
Drawings
FIG. 1 is a schematic flow chart of the detection method of the fluorescence brightness detection device for fluorescent penetrant by direct method according to the present invention;
FIG. 2 is a schematic diagram of an embodiment of the fluorescence brightness detection device for fluorescent penetrant by direct method according to the present invention.
Description of the reference numerals
1 ultraviolet light source 2 sample holder
21 flat bottom groove 3 photoelectric detector
4 ultraviolet detector 5 ultraviolet filter
61 first converging lens 62 second converging lens
63 third converging lens
Detailed Description
In the present invention, unless otherwise specified, the positional or orientational relationships indicated by the terms "upper" and "lower" are based on the positional or orientational relationships shown in the drawings.
In the present description, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit indication of the number of technical features indicated, and therefore, the features defined as "first", "second", "third" may explicitly or implicitly include one or more of the features described.
The following detailed description of the embodiments of the present invention is provided in conjunction with the accompanying drawings, and it should be understood that the embodiments described herein are merely for purposes of illustration and explanation, and the scope of the present invention is not limited to the following embodiments.
As shown in fig. 1, an embodiment of the detection method adopted by the device for detecting fluorescence brightness of fluorescent penetrant by direct method of the present invention includes the following steps:
s10: the fluorescent penetrant liquid is formed into a liquid layer with a set thickness. The brightness of the fluorescence emitted from the fluorescent penetrant liquid after being irradiated by ultraviolet rays, that is, the intensity of the fluorescence measured in the visible light region, is determined by the formula (1):
If＝φI0(1-e-KCX) (1)
in the formula IfIs the fluorescence brightness;
I0the ultraviolet radiation intensity of the fluorescent penetrant liquid;
c is the effective concentration of the fluorescent dye in the fluorescent penetrant liquid;
k is the extinction coefficient of the fluorescent dye;
x is the thickness of the liquid layer of the fluorescent penetrant;
phi is the amount of visible light produced by the dye system.
It can be seen that, in addition to the self-characteristics of the fluorescent penetrant, the liquid layer thickness of the fluorescent penetrant has a direct influence on the brightness of the fluorescence generated after ultraviolet irradiation, and by controlling the thickness of the fluorescent penetrant layer to a set thickness, the comparison of the brightness of the fluorescence after ultraviolet irradiation of different types and concentrations of fluorescent penetrant is facilitated, and the standardization of the fluorescent brightness of the fluorescent penetrant is facilitated. The formation of a layer of fluorescent permeate of a set thickness can be achieved by placing a quantity of fluorescent permeate in a container or other liquid-capable appliance having a bottom area.
S20: the fluorescent penetrant liquid is directly irradiated with ultraviolet rays. Compare in and soak the fluorescent penetrant with traditional use filter paper, use the detection method of ultraviolet irradiation after drying, the utility model discloses a detection method of ultraviolet ray direct irradiation fluorescent penetrant. The traditional filter paper detection method has the defects that the operation process is complicated, and more reagents and appliances are used in the detection process, the discharging degree of the fluorescent penetrant on the filter paper is influenced by the specific operation of an operator due to different water absorptions of different filter papers, and the distribution of fluorescent substances on the filter paper after the diluted fluorescent penetrant is dried is uneven, so that the accuracy of the detection result is influenced. Meanwhile, the diluted fluorescent penetrant and the filter paper after detection both cause waste and burden to the environment. The fluorescent penetrant is directly irradiated by ultraviolet rays, and the fluorescent penetrant is directly excited to emit fluorescence, so that intermediate steps are reduced, the detection steps can be simplified, and the influence of the intermediate steps on the detection result can be reduced. The fluorescent penetrant is not processed in the detection process, and the detected fluorescent penetrant can still be used continuously, so that the waste of the fluorescent penetrant is avoided. The fluorescent penetrant is irradiated with ultraviolet light, and the liquid is usually contained in a transparent container (e.g., cuvette) and the fluorescent penetrant is irradiated from the side of the container. However, in this method, the ultraviolet rays firstly penetrate through the wall of the container, but the ultraviolet rays are weak in permeability, and the ultraviolet irradiation intensity is attenuated when the ultraviolet rays penetrate through the wall of the container; the inner and outer surfaces of the container wall will also reflect ultraviolet radiation to some extent, causing attenuation of the intensity of the ultraviolet radiation. Therefore, the intensity of the ultraviolet radiation to which the fluorescent penetrant is subjected is affected by the degree of attenuation of the ultraviolet radiation by the container walls. The shapes, thicknesses and textures of the walls of different fluorescent penetrant-containing containers are difficult to keep consistent, and the attenuation degree of ultraviolet rays passing through the walls of the containers is difficult to keep consistent, so that the accuracy of detection results is influenced. The fluorescent penetrant liquid is directly irradiated by ultraviolet rays, the attenuation of the ultraviolet rays is small, and the consistency of the irradiation intensity of the ultraviolet rays on the fluorescent penetrant liquid and the irradiation intensity of the ultraviolet rays emitted by the ultraviolet ray emitting device is high, so that the irradiation intensity of the ultraviolet rays on the fluorescent penetrant liquid is more accurate, and the accuracy of a detection result is higher.
S30: and detecting the brightness of the fluorescence emitted by the fluorescent penetrating fluid. The detection of the fluorescence brightness emitted by the fluorescence penetrating fluid is also directly carried out aiming at the liquid level of the fluorescence penetrating fluid, so that the loss of the fluorescence brightness caused by the wall part of the container containing the fluorescence penetrating fluid can be avoided, and the accuracy of the detection result is improved. The brightness of the fluorescence emitted from the fluorescent penetrant liquid is detected by a photoelectric conversion device. The photoelectric conversion device can convert light rays with different brightness into different output currents, and the brightness of fluorescence emitted by the fluorescent penetrating fluid can be known by detecting the magnitude of the output currents. The fluorescence brightness value of the fluorescent penetrant can be obtained by processing the current signal of the photoelectric conversion device, or indirectly by comparing with a standard fluorescent penetrant.
In some embodiments of the detection method of the present invention, in step S10, a liquid layer of fluorescent penetrant with a certain thickness is formed by placing a flat-bottomed groove with a large area and a shallow depth on a specific sample holder and adding a certain amount of fluorescent penetrant into the flat-bottomed groove. By controlling the amount of fluorescent penetrant added to the flat-bottomed grooves, the thickness of the fluorescent penetrant in the flat-bottomed grooves can be controlled to a set thickness. The fluorescent penetrant liquid is added into the flat-bottom groove, a fluorescent penetrant liquid layer with uniform thickness and convenient ultraviolet irradiation can be formed, a detection environment with high comparability can be formed, and fluorescence emitted by the fluorescent penetrant liquid can be detected conveniently.
In some embodiments of the detection method of the present invention, in step S20, the fluorescent penetrant is irradiated with ultraviolet light with a set wavelength and a set irradiation intensity. The wavelength of the ultraviolet light used for the fluorescence inspection is usually in the range of 330-390nm, and in the present embodiment, the set wavelength of the ultraviolet light used is 365 nm. As can be seen from the formula (1), the brightness of the fluorescence emitted by the fluorescent penetrant liquid is in direct proportion to the irradiation intensity of the ultraviolet rays received by the fluorescent penetrant liquid, and the ultraviolet rays with set irradiation intensity are used for irradiating the fluorescent penetrant liquid, so that the standardization of the fluorescence brightness obtained by detecting different fluorescent penetrant liquids can be realized, and the direct comparison of the fluorescence brightness of different fluorescent penetrant liquids is facilitated. In this example, the irradiation intensity of ultraviolet rays was set to 3000 microwatts per square centimeter. Of course, the fluorescent penetrant liquid may be irradiated with other ultraviolet rays with different irradiation intensities (generally, 3000 microwatts per square centimeter or more), and the standard fluorescence brightness of the fluorescent penetrant liquid can be converted by knowing the irradiation intensity of the ultraviolet rays.
As a specific embodiment of the detection method of the present invention, the ultraviolet rays are irradiated to the fluorescent penetrant liquid along a direction inclined to the liquid surface of the fluorescent penetrant liquid. The inclined direction means that the included angle between the irradiation direction and the liquid level of the fluorescent penetrant is less than 90 degrees, so that the direct irradiation of ultraviolet rays and the direct detection of the fluorescence brightness can be carried out on the liquid level of the fluorescent penetrant arranged in a small range, and the mutual interference between irradiation and detection devices is prevented. On the other hand, in order to allow more ultraviolet rays to enter the inside of the fluorescent penetrant liquid to excite the fluorescent substance therein to emit light, the angle between the irradiation direction of the ultraviolet rays and the liquid level of the fluorescent penetrant liquid is not too small, and generally, the angle may be set to be between 40 ° and 70 °, and is preferably set to be 45 °.
As a specific embodiment of the detection method of the present invention, when the ultraviolet light irradiates the liquid level of the fluorescent penetrant, the liquid level reflects the ultraviolet light, and a portion of the ultraviolet light is reflected by the liquid level and then is reflected back to the upper portion of the liquid level along a certain direction. A detection device can be arranged in the reflection direction to detect the irradiation intensity of the ultraviolet rays reflected by the liquid level of the fluorescent penetrant liquid. And the irradiation intensity of the ultraviolet rays reflected when the ultraviolet rays irradiate on the liquid level of the fluorescent penetrant liquid depends on the irradiation intensity of the irradiating ultraviolet rays and the included angle between the irradiating ultraviolet rays and the liquid level of the fluorescent penetrant liquid, so that the irradiation intensity of the irradiating ultraviolet rays can be obtained through the detected irradiation intensity of the reflecting ultraviolet rays when the included angle between the irradiating ultraviolet rays and the liquid level of the fluorescent penetrant liquid is fixed. In addition, the irradiation intensity of the irradiated ultraviolet rays can be adjusted according to the irradiation intensity of the reflected ultraviolet rays, so that the irradiated ultraviolet rays are controlled at a certain irradiation intensity, and the irradiation intensity of the irradiated ultraviolet rays is kept constant.
In some embodiments of the detection method of the present invention, in step S30, the brightness of the fluorescence emitted by the fluorescent penetrant liquid is detected in a direction perpendicular to the liquid level of the fluorescent penetrant liquid. The brightness of the fluorescence emitted by the fluorescent penetrant liquid in the direction perpendicular to the liquid level of the fluorescent penetrant liquid represents the brightness of the fluorescence generated by the fluorescent substance in the set thickness direction, and the detection is directly carried out on the fluorescent penetrant liquid without being influenced by the container wall, so that the detection precision is higher. An ultraviolet filter can be arranged on the detection path to filter ultraviolet rays mixed in the fluorescence, so that the influence of the ultraviolet rays on the fluorescence brightness detection result can be reduced.
An embodiment of the fluorescence brightness detecting device for direct method fluorescent penetrant of the present invention, as shown in fig. 2, includes an ultraviolet light source 1, a sample holder 2 and a photodetector 3. The sample holder 2 may be made of quartz glass in the shape of a rectangular parallelepiped, and the surface of the sample holder 2 is provided with a flat-bottomed groove 21. The flat-bottom groove 21 is a short cylindrical recess arranged on the surface of the sample holder 2, the bottom surface of the flat-bottom groove 21 is flat and parallel to the surface of the sample holder 2 where the flat-bottom groove 21 is arranged, the depth of the flat-bottom groove is small, and the area of the bottom surface is relatively large. The bottom surface of the flat bottom groove 21 may be circular, square or rectangular in shape, or may be other suitable shapes. The flat bottom grooves 21 are used for containing samples of fluorescent penetrant for detection, and the flat bottom surface can ensure that the fluorescent penetrant forms liquid layers with the same thickness at different parts of the flat bottom grooves 21. The ultraviolet light source 1 is arranged such that the irradiation direction of ultraviolet rays is inclined to the bottom surface of the flat-bottomed groove 21. In general, the sample holder 2 is arranged such that the bottom surface of the flat-bottomed recess 21 is parallel to a horizontal plane, and the irradiation direction of the ultraviolet rays emitted from the ultraviolet light source 1 is inclined to the horizontal plane, that is, to the surface of the fluorescent penetrant. Any emission light source capable of stably emitting ultraviolet rays, such as a long-wave ultraviolet lamp, an ultraviolet metal halide lamp, or an ultraviolet LED, may be used as the ultraviolet light source 1. The first condensing lens 61 may be further disposed on the ultraviolet irradiation path, and the first condensing lens 61 may condense the ultraviolet rays emitted from the ultraviolet light source 1 to concentrate the ultraviolet rays on the region where the fluorescent penetrant liquid is located. Although the first converging lens light 61 also causes a certain amount of ultraviolet attenuation, it is a part of the detection device, and it will not be replaced in different detection processes, and will not cause the change of the degree of ultraviolet attenuation, and thus will not have adverse effect on the detection result. The photodetector 3 is disposed in a direction perpendicular to the bottom surface of the flat-bottomed groove 21. When the bottom surface of the flat-bottom groove 21 is parallel to the horizontal plane, the detection direction of the photoelectric detector 3 can be perpendicular to the liquid level of the fluorescent penetrant, so that the fluorescence emitted by the fluorescent penetrant can be directly detected. The photoelectric detector 3 can be a photoelectric tube sensitive to the fluorescence emitted by the fluorescent penetrant, usually yellow-green light, or the like. A second converging lens 62 may also be disposed in the detection direction of the photodetector 3 to converge the fluorescence emitted by the fluorescent penetrating fluid to the detection head of the photodetector 3, so as to improve the detection sensitivity of the photodetector 3. The arrangement form of the ultraviolet light source 1 and the photoelectric detector 3 can also increase the distance between the ultraviolet light source 1 and the photoelectric detector 3, and prevent the interference between the ultraviolet light source 1 and the photoelectric detector 3 and other devices on the light path.
In some embodiments of the direct method fluorescence penetrating fluid fluorescence brightness detection apparatus of the present invention, as shown in fig. 2, an ultraviolet detector 4 is further disposed in the reflection direction of the reflected light generated by the ultraviolet light emitted from the ultraviolet light source 1 irradiating the sample holder 2. Because the setting direction of the photoelectric detector 3 is perpendicular to the bottom surface of the flat-bottom groove 21, when ultraviolet rays emitted by the ultraviolet light source 1 irradiate the bottom surface of the flat-bottom groove 21 or the liquid level of fluorescent penetrant parallel to the bottom surface of the flat-bottom groove 21, the ultraviolet rays emitted by the ultraviolet light source 1 form incident light rays, the detection direction line of the photoelectric detector 3 forms a normal line of an ultraviolet reflection surface, the ultraviolet detector 4 is arranged on a light path of the ultraviolet reflection light rays, and at the moment, the setting direction of the ultraviolet detector 4 and the irradiation direction of the ultraviolet light source 1 are symmetrical about the setting direction of the photoelectric detector 3. A third converging lens 63 may be further disposed in the setting direction of the ultraviolet detector 4, that is, the reflection direction of the ultraviolet rays, so as to converge the reflected ultraviolet rays to the detection head region of the ultraviolet detector 4, thereby improving the detection sensitivity of the ultraviolet detector 4. The ultraviolet detector 4 may use a photoelectric conversion device sensitive to ultraviolet rays, such as an ultraviolet photodiode.
As a specific implementation method of the direct method fluorescence penetrating fluid fluorescence brightness detection apparatus of the present invention, as shown in fig. 2, an ultraviolet filter 5 is further disposed in the detection direction of the photodetector 3. The ultraviolet filter 5 can filter a small amount of ultraviolet rays mixed in the fluorescent light emitted by the fluorescent penetrating fluid, and prevent the ultraviolet rays from irradiating the photoelectric detector 3 and influencing the detection result of the photoelectric detector 3. Similarly, when setting up ultraviolet filter 5, ultraviolet filter 5 also belongs to the utility model discloses a detection device's intrinsic device can not change when carrying out the detection of difference, and the little attenuation of the fluorescence light that it caused also can not form the influence to the testing result.
In some embodiments of the direct method fluorescence penetrant fluorescence brightness detection apparatus of the present invention, the ultraviolet light source 1 is selected from ultraviolet LEDs. The wavelength distribution range of ultraviolet rays emitted by the ultraviolet LED is smaller, and the irradiation intensity of the ultraviolet rays emitted by the ultraviolet LED is only influenced by the electrifying current, so that the ultraviolet rays with high irradiation intensity stability can be formed, and the accuracy of the detection result is improved. In addition, the ultraviolet LED current control can conveniently control the ultraviolet irradiation intensity and meet the detection requirement.
Through the technical scheme, the utility model discloses the direct method fluorescence penetrant fluorescence luminance detection method who adopts uses the ultraviolet ray directly to shine the fluorescence penetrant of settlement thickness, directly carries out fluorescence luminance to the liquid level of fluorescence penetrant and detects, has avoided the container wall to the influence of ultraviolet irradiation intensity and fluorescence luminance on the one hand, has improved fluorescence luminance detection's accuracy, and on the other hand has reduced the testing procedure, has not only improved detection speed, has reduced the dependence of testing process to the reagent and the utensil that use moreover, has reduced the waste, has alleviateed the environmental burden. The utility model discloses an among the preferred embodiment, can obtain the irradiation intensity who shines ultraviolet ray to the detection of ultraviolet ray reflection light to can adjust the irradiation intensity who shines ultraviolet ray in view of the above, improve the stability of shining ultraviolet irradiation intensity. The ultraviolet rays in the fluorescence are filtered during detection, so that the influence of the ultraviolet rays on the fluorescence brightness detection result can be avoided, and the detection accuracy is improved. The utility model discloses a direct method fluorescence penetrant fluorescence luminance detection device, the testing process is more simple and convenient, and the detection cost is lower, and it is also higher to detect the precision, also more is favorable to removing the detection. Ultraviolet LED produces ultraviolet ray, and the wavelength of ultraviolet ray is more single, stable, and the stability of ultraviolet irradiation intensity is also higher to can conveniently adjust ultraviolet irradiation intensity, improve the suitability of device.
In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "a specific implementation," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present disclosure, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. In the technical idea scope of the present invention, it can be right to the technical solution of the present invention perform multiple simple modifications, including each technical feature combined in any other suitable manner, these simple modifications and combinations should be regarded as the disclosed content of the present invention, and all belong to the protection scope of the present invention.
Claims (7)
1. A fluorescence brightness detection device for fluorescent penetrant by a direct method is characterized by comprising an ultraviolet light source (1), a sample holder (2) and a photoelectric detector (3); the surface of the sample holder (2) is provided with a flat-bottom groove (21), the irradiation direction of the ultraviolet light source (1) is inclined to the bottom surface of the flat-bottom groove (21), and the photoelectric detector (3) is arranged in the direction vertical to the bottom surface of the flat-bottom groove (21).
2. The direct method fluorescent penetrant fluorescence luminance detection apparatus according to claim 1, further comprising an ultraviolet detector (4), wherein a detection direction of the ultraviolet detector (4) and an irradiation direction of the ultraviolet light source (1) are symmetrical with respect to an arrangement direction of the photodetector (3).
3. The direct method fluorescent penetrant fluorescent luminance detection apparatus according to claim 2, further comprising a third converging lens (63), wherein the third converging lens (63) is disposed in a detection direction of the ultraviolet detector (4), and the ultraviolet detector (4) is disposed between the sample holder (2).
4. The direct method fluorescent penetrant fluorescence luminance detection apparatus according to claim 1, wherein an ultraviolet filter (5) is further disposed in the arrangement direction of the photodetector (3).
5. The direct method fluorescent penetrant fluorescence luminance detecting apparatus according to claim 1, further comprising a first converging lens (61), wherein the first converging lens (61) is disposed on an irradiation light path of ultraviolet rays emitted by the ultraviolet light source (1), and the ultraviolet light source (1) and the sample holder (2) are arranged therebetween.
6. The direct method fluorescent penetrant fluorescent luminance detection apparatus of claim 1, further comprising a second converging lens (62), wherein the second converging lens (62) is disposed below the photodetector (3), between the photodetector (3) and the sample holder (2).
7. The direct method fluorescent permeate fluorescence brightness detection apparatus according to any one of claims 1-6, wherein the ultraviolet light source (1) is an ultraviolet LED.
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| CN202022544105.7U CN213301467U (en) | 2020-11-05 | 2020-11-05 | Fluorescent brightness detector for fluorescent penetrating fluid by direct method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112229508A (en) * | 2020-11-05 | 2021-01-15 | 江苏德意高航空智能装备股份有限公司 | Fluorescence brightness detection method and device for fluorescent penetrating fluid by direct method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112229508A (en) * | 2020-11-05 | 2021-01-15 | 江苏德意高航空智能装备股份有限公司 | Fluorescence brightness detection method and device for fluorescent penetrating fluid by direct method |
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