Ultraviolet flaw detection lamp

Abstract

The utility model provides a kind of ultraviolet flaw detection lamp, including substrate;Several LED light sources are evenly installed on the substrate, the substrate is installed in aluminium alloy shell, the aluminium alloy shell is closed using optical filter at the end of LED light source irradiation direction, fan is installed on the other end of aluminium alloy shell, the fan and LED light source are connected with control circuit respectively through fan transformer and LED light source transformer, control circuit is connected with power plug through lead wire.The utility model can install the LED light source of enough light intensity, make ultraviolet irradiance meet the requirement of flaw detection, and by temperature control, the temperature of LED light source is controlled, reduces its light decay speed.

Description

Technical Field

[0001] This utility model relates to an ultraviolet flaw detection lamp. Background Technology

[0002] As an important component in the transmission structure, bearings require flaw detection after a certain period of use. The inspection method is usually magnetic particle testing. Most of the ultraviolet lamps used in existing flaw detection have insufficient light intensity, which makes it impossible to detect small defects. Especially when magnetic particle testing adopts intelligent recognition methods, ultraviolet lamps need to provide higher ultraviolet irradiance to facilitate the acquisition of clearer magnetic trace images by industrial cameras. The ultraviolet irradiance requirement is greater than 5000μW / cm2. LED arrays with high light intensity have the problem of poor heat dissipation, which leads to accelerated light decay. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an ultraviolet flaw detection lamp.

[0004] This utility model is achieved through the following technical solution.

[0005] This utility model provides an ultraviolet flaw detection lamp, including a substrate; a plurality of LED light sources are uniformly mounted on the substrate, the substrate is installed in an aluminum alloy shell, one end of the aluminum alloy shell in the direction of LED light source illumination is sealed with a filter, and a fan is installed on the other end of the aluminum alloy shell. The fan and LED light sources are respectively connected to a control circuit through a fan transformer and an LED light source transformer, and the control circuit is connected to a power plug through leads.

[0006] The substrate is an arc plate, and the LED light source is installed on the concave surface of the substrate.

[0007] The fan is a negative pressure fan.

[0008] The control circuit includes an LED constant current drive module and a fan speed controller. The LED constant current drive module and the fan speed controller are connected to the LED light source and the fan, respectively. The LED constant current drive module is connected to a timer. The fan speed controller is connected to a temperature sensing speed controller. The temperature sensing speed controller is connected to a temperature sensor. The fan speed controller and the temperature sensing speed controller are connected in parallel to a power switch. The power switch and the timer are both connected to a power plug.

[0009] The temperature sensor is installed inside an aluminum alloy housing.

[0010] The beneficial effects of this utility model are: it can install an LED light source with sufficient light intensity so that the ultraviolet irradiance meets the requirements for flaw detection, and through temperature control, the temperature of the LED light source can be controlled, thereby reducing its light decay rate. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a schematic diagram of the control circuit principle of this utility model;

[0013] In the diagram: 1-substrate, 2-LED light source, 3-fan, 4-aluminum alloy housing, 5-filter, 6-fan transformer, 7-LED light source transformer, 8-control circuit, 9-power plug, 10-temperature sensor, 11-LED constant current drive module, 12-fan speed controller, 13-temperature sensing speed controller, 14-timer, 15-power switch. Detailed Implementation

[0014] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0015] An ultraviolet (UV) flaw detection lamp includes a substrate 1. A plurality of LED light sources 2 are uniformly mounted on the substrate 1. The substrate 1 is housed within an aluminum alloy casing 4. One end of the aluminum alloy casing 4 in the direction of LED light source 2 illumination is sealed with a filter 5. The UV light emitted by the LED light sources 2 is filtered out by the filter 5, removing most of the visible light, while allowing UV-A UV light to pass through. A fan 3 is mounted on the other end of the aluminum alloy casing 4. The fan 3 and the LED light sources 2 are connected to a control circuit 8 via a fan transformer 6 and an LED light source transformer 7, respectively. The control circuit 8 is connected to a power plug 9 via leads.

[0016] Preferably, the LED light source 2 provides ultraviolet light of (365nm±20nm); more than 10 LED light sources 2 are installed on the substrate (1), and each selected LED light source 2 provides an ultraviolet irradiance of not less than 800μW / cm2 at 100mm and has a service life of not less than 20,000 hours.

[0017] Preferably, the substrate 1 is an arc plate, the LED light source 2 is installed on the concave surface of the substrate 1, the diameter of the substrate (1) is 100-200mm, the material is a composite copper-aluminum composite material, which has good heat dissipation performance; the concave surface of the substrate (1) is made of anodized aluminum, which has good reflectivity to light.

[0018] Preferably, fan 3 uses a dual ball bearing fan, which has strong airflow and low noise. The aluminum alloy housing 4 is made of high-strength aluminum alloy material, and the side wall is provided with a Φ2mm heat dissipation hole array; fan 3 is installed on the top of the aluminum alloy housing 4, which, together with the copper base plate, achieves forced convection heat dissipation.

[0019] Preferably, the control circuit 8 includes an LED constant current drive module 11 and a fan speed controller 12. The LED constant current drive module 11 and the fan speed controller 12 are connected to the LED light source 2 and the fan 3, respectively. The LED constant current drive module 11 is connected to a timer 14, and the fan speed controller 12 is connected to a temperature-sensing speed controller 13. The temperature-sensing speed controller 13 is connected to a temperature sensor 10. The fan speed controller 12 and the temperature-sensing speed controller 13 are connected in parallel to a power switch 15. Both the power switch 15 and the timer 14 are connected to a power plug. The transformer 7 for the LED beads can achieve constant current output, ensuring the stability of the LED light source output.

[0020] Preferably, the LED light source is controlled by a timer to avoid lifespan degradation caused by prolonged operation.

[0021] The temperature sensor 10 is installed inside the aluminum alloy housing 4 to detect the temperature of the LED light source in real time and automatically adjust the speed of the fan 3 according to the temperature, such as 30% speed at 40℃ and 100% speed at 60℃.

Claims

1. An ultraviolet flaw detector lamp, comprising a substrate (1), characterized in that: A plurality of LED light sources (2) are uniformly mounted on the substrate (1). The substrate (1) is installed inside an aluminum alloy shell (4). The aluminum alloy shell (4) is sealed at one end in the direction of the LED light source (2) with a filter (5). A fan (3) is installed on the other end of the aluminum alloy shell (4). The fan (3) and the LED light source (2) are connected to the control circuit (8) through a fan transformer (6) and an LED light source transformer (7), respectively. The control circuit (8) is connected to the power plug (9) through a lead wire.

2. The ultraviolet flaw detection lamp as described in claim 1, characterized in that: The substrate (1) is an arc plate, and the LED light source (2) is installed on the concave surface of the substrate (1).

3. The ultraviolet flaw detection lamp as described in claim 1, characterized in that: The fan (3) is a negative pressure fan.

4. The ultraviolet flaw detection lamp as described in claim 1, characterized in that: The control circuit (8) includes an LED constant current drive module (11) and a fan speed controller (12). The LED constant current drive module (11) and the fan speed controller (12) are connected to the LED light source (2) and the fan (3) respectively. The LED constant current drive module (11) is connected to a timer (14). The fan speed controller (12) is connected to a temperature sensing speed controller (13). The temperature sensing speed controller (13) is connected to a temperature sensor (10). The fan speed controller (12) and the temperature sensing speed controller (13) are connected in parallel to a power switch (15). The power switch (15) and the timer (14) are both connected to a power plug.

5. The ultraviolet flaw detection lamp as described in claim 4, characterized in that: The temperature sensor (10) is installed inside the aluminum alloy housing (4).

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