Electrical equipment fault rapid positioning device based on infrared thermal imaging

Abstract

This invention relates to the field of electrical equipment testing technology and discloses a rapid fault location device for electrical equipment based on infrared thermal imaging. It solves the problem of the inconvenience of adjusting the angle of the infrared lens to improve detection effectiveness. The device includes a housing, with a handle fixedly connected to the bottom of the housing. The handle and housing are integrally formed, and a rubber sleeve is fixedly fitted to the outer side of the handle. The housing is equipped with an adjustment mechanism and a protective mechanism. The adjustment mechanism includes a side plate located above the housing, with a rotating shaft fixedly connected to the bottom of the side plate. A receiving frame is fixedly connected to the bottom of the handle, and an inner plate is fixedly installed on the inner side of the receiving frame. The bottom end of the rotating shaft passes through the housing and is rotatably connected to the inner plate. A U-shaped plate is fixedly connected to the top of the side plate, and an inner shaft is rotatably connected to the inner side of the U-shaped plate. This invention facilitates the circumferential rotation of the support frame and the infrared lens, thereby facilitating the adjustment of the infrared lens angle to improve detection effectiveness.

Description

Technical Field

[0001] This invention belongs to the field of electrical equipment testing technology, specifically an electrical equipment fault rapid location device based on infrared thermal imaging. Background Technology

[0002] As power systems develop towards intelligence and large-scale operation, the stable operation of electrical equipment is directly related to power grid safety and production order. Early fault detection and rapid location have become core requirements for power operation and maintenance. Traditional electrical equipment fault detection relies on manual inspection, multimeter measurement, and megohmmeter insulation testing, which have problems such as low detection efficiency, high risk of contact detection, and difficulty in detecting hidden faults. Especially in high-voltage and large electrical equipment scenarios, traditional methods cannot capture early fault signals such as increased contact resistance and local insulation aging in time, which can easily lead to the expansion of faults and cause safety accidents such as shutdowns and fires. Against this background, infrared thermal imaging technology, with its advantages of non-contact, visualization, and rapid detection, has been widely used in the field of electrical equipment fault location and is gradually replacing traditional detection methods as the core means of operation and maintenance.

[0003] Currently, infrared thermal imaging fault location technology has formed a certain application system. Portable thermal imagers have become the mainstream equipment for on-site inspection due to their flexible mobility. However, the lens angles on them are mostly fixed, which not only reduces the detection efficiency and coverage, but also increases the operation and maintenance costs, and cannot meet the needs of modern power operation and maintenance for efficient, accurate and flexible detection. Summary of the Invention

[0004] In view of the above situation and to overcome the shortcomings of the prior art, the present invention provides a rapid fault location device for electrical equipment based on infrared thermal imaging, which effectively solves the problem that it is currently inconvenient to adjust the angle of the infrared lens to improve the detection effect.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a rapid fault location device for electrical equipment based on infrared thermal imaging, comprising a housing, a handle fixedly connected to the bottom of the housing, the handle being integrally formed with the housing, a rubber sleeve fixedly fitted to the outside of the handle, and an adjustment mechanism and a protective mechanism provided on the housing.

[0006] The adjustment mechanism includes a side plate located above the housing. A rotating shaft is fixedly connected to the bottom of the side plate. A receiving frame is fixedly connected to the bottom of the handle. An inner plate is fixedly installed inside the receiving frame. The bottom of the rotating shaft passes through the housing and is rotatably connected to the inner plate. A U-shaped plate is fixedly connected to the top of the side plate. An inner shaft is rotatably connected to the inner side of the U-shaped plate. A support frame is fixedly sleeved on the middle of the outer side of the inner shaft. A sealing box is fixedly installed on the outer side of the support frame. An infrared lens is fixedly installed on the sealing box.

[0007] Preferably, a small motor is fixedly installed on the inner side of the U-shaped plate, a drive shaft is fixedly connected to the small motor, a drive bevel gear is fixedly connected to the end of the drive shaft away from the small motor, and a driven bevel gear is fixedly installed on the outer side of the inner shaft, the driven bevel gear meshing with the drive bevel gear.

[0008] Preferably, the outer side of the inner plate is provided with a sliding groove, the inner side of the sliding groove is slidably connected to a sliding plate, the side of the sliding plate near the rotating shaft is fixedly connected to a toothed plate, and an external gear is fixedly installed on the outer side of the rotating shaft, the external gear meshing with the toothed plate.

[0009] Preferably, the outer side of the inner plate is provided with a lead screw, and a lead screw nut is threaded onto the outer side of the lead screw, and the slide plate is fixed to the outer side of the lead screw nut.

[0010] Preferably, the inner plate is symmetrically fixedly connected to side block 2 and side block 1 on its outer side. Side block 2 is rotatably connected to a support shaft on the side closer to side block 1. One end of the lead screw is fixedly connected to the end of the support shaft away from side block 2, and the other end of the lead screw is fixedly connected to a drive shaft. The end of the drive shaft away from the lead screw passes through side block 1 and is fixedly connected to a handwheel.

[0011] Preferably, the protective mechanism includes a protective cover located on the outside of the housing, a sealing ring fixedly connected to the bottom of the protective cover, positioning rods fixedly connected to both sides of the protective cover, two positioning cylinders symmetrically fixedly connected to the outside of the housing, the two positioning rods being inserted into the two positioning cylinders respectively, and two positioning holes symmetrically provided on the top of the housing, the outer diameter of the two positioning rods being equal to the inner diameter of the two positioning holes.

[0012] Preferably, an mounting plate is fixedly installed on the outer side of the housing, and two guide rods are symmetrically fixedly connected between the mounting plate and the housing. A guide plate is movably sleeved between the two guide rods. Two springs are symmetrically fixedly connected between the guide plate and the mounting plate. The two springs are respectively sleeved on the outer side of the two guide rods. A connecting shaft is rotatably connected to the top of the guide plate, and the end of the connecting shaft away from the guide plate is rotatably connected to the outer side of the protective cover.

[0013] Preferably, a battery compartment is provided on the side of the grip, and a cover plate is hinged to the inside of the battery compartment.

[0014] Preferably, the front of the housing is provided with an indicator light, a display screen and operation buttons from top to bottom.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. The present invention enables the support frame to rotate by starting a small motor, which facilitates changing the tilt angle of the infrared lens. Furthermore, rotating the handwheel enables the rotating shaft to rotate, which facilitates the circumferential rotation of the support frame and the infrared lens, thereby making it easier to adjust the angle of the infrared lens to improve the detection effect.

[0016] 2. This invention allows the two positioning rods to be inserted into the two positioning holes by moving and rotating the protective cover. This facilitates the sealing ring to fit against the housing under the action of the two springs, thus providing a sealed protection for the infrared lens and preventing the infrared lens from being exposed to the outside and accumulating dust when the entire device is not in use.

[0017] 3. This invention uses precise laser coaxial marking to quickly capture abnormal temperature rise signals at faulty parts of equipment without contact with electrical equipment, generate real-time visual thermal imaging images, and automatically identify high-temperature fault areas. This significantly reduces the labor intensity of manual inspections, improves fault diagnosis efficiency, effectively avoids the safety risks of traditional contact-based detection, and provides efficient and reliable technical support for power operation and maintenance. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0019] In the attached diagram: Figure 1 This is a schematic diagram of the structure of the rapid fault location device for electrical equipment based on infrared thermal imaging according to the present invention. Figure 2 This is a schematic diagram of the shell structure of the present invention; Figure 3 This is a schematic diagram of the adjustment mechanism structure of the present invention; Figure 4 This is a schematic diagram of the side disc structure of the present invention; Figure 5 This is a schematic diagram of the inner plate structure of the present invention; Figure 6 This is a schematic diagram of the protective mechanism structure of the present invention.

[0020] In the diagram: 1. Housing; 2. Adjustment mechanism; 201. Side plate; 202. Rotating shaft; 203. Receiving frame; 204. Inner plate; 205. Small motor; 206. Driving bevel gear; 207. U-shaped plate; 208. Driven bevel gear; 209. Support frame; 2010. Infrared lens; 2011. Sealing box; 2012. Inner shaft; 2013. Drive shaft; 2014. External gear; 2015. Gear plate; 2016. Slide groove; 2017. Side block one; 2018. Handwheel; 2019. Drive... 1. Moving shaft; 2020. Slide plate; 2021. Nut; 2022. Lead screw; 2023. Support shaft; 2024. Side block two; 3. Protective mechanism; 301. Protective cover; 302. Sealing ring; 303. Positioning rod; 304. Positioning cylinder; 305. Guide rod; 306. Guide plate; 307. Mounting plate; 308. Spring; 309. Connecting shaft; 4. Cover plate; 5. Handle; 6. Rubber sleeve; 7. Operation button; 8. Display screen; 9. Positioning hole; 10. Indicator light; 11. Battery compartment. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0022] Example 1, by Figures 1-6 The present invention relates to a rapid fault location device for electrical equipment based on infrared thermal imaging, comprising a housing 1, a handle 5 fixedly connected to the bottom of the housing 1, the handle 5 being integrally formed with the housing 1, and a rubber sleeve 6 fixedly fitted to the outside of the handle 5. By setting the handle 5 and the rubber sleeve 6, the entire device can be easily held and used. The housing 1 is provided with an adjustment mechanism 2 and a protective mechanism 3.

[0023] In Embodiment Two, based on Embodiment One, the adjusting mechanism 2 includes a side plate 201 located above the housing 1. A rotating shaft 202 is fixedly connected to the bottom of the side plate 201. A receiving frame 203 is fixedly connected to the bottom end of the handle 5. An inner plate 204 is fixedly installed on the inner side of the receiving frame 203. The bottom end of the rotating shaft 202 penetrates the housing 1 and is rotatably connected to the inner plate 204. A U-shaped plate 207 is fixedly connected to the top of the side plate 201. An inner shaft 2012 is rotatably connected to the inner side of the U-shaped plate 207. A support frame 209 is fixedly sleeved on the outer middle part. A sealing box 2011 is fixedly installed on the outer side of the support frame 209. An infrared lens 2010 is fixedly installed on the sealing box 2011. A small motor 205 is fixedly installed on the inner side of the U-shaped plate 207. A drive shaft 2013 is fixedly connected to the small motor 205. A drive bevel gear 206 is fixedly connected to the end of the drive shaft 2013 away from the small motor 205. A driven bevel gear 208 is fixedly installed on the outer side of the inner shaft 2012. The inner plate 204 has a groove 2016 on its outer side, which meshes with the drive bevel gear 206. A slide plate 2020 is slidably connected to the inner side of the groove 2016. A toothed plate 2015 is fixedly connected to the side of the slide plate 2020 near the rotating shaft 202. An external gear 2014 is fixedly installed on the outer side of the rotating shaft 202 and meshes with the toothed plate 2015. A lead screw 2022 is provided on the outer side of the inner plate 204. A nut 2021 is threaded onto the outer side of the lead screw 2022. The slide plate 2020 is fixed to the nut 2021. On the outer side of 021, the outer side of the inner plate 204 is symmetrically and fixedly connected to side block 2024 and side block 1 2017. The side of side block 2024 near side block 1 2017 is rotatably connected to a support shaft 2023. One end of the lead screw 2022 is fixedly connected to the end of the support shaft 2023 away from side block 2024, and the other end of the lead screw 2022 is fixedly connected to a drive shaft 2019. The end of the drive shaft 2019 away from the lead screw 2022 passes through side block 1 2017 and is fixedly connected to a handwheel 2018. When the small motor 205 is started, it drives the drive shaft 2013 to rotate, and drives the drive bevel gear 206 to rotate. Since the drive bevel gear 206 meshes with the driven bevel gear 208, it drives the inner shaft 2012 to rotate. At the same time, the support frame 209 rotates, thereby realizing the adjustment of the tilt angle of the infrared lens 2010. When the handwheel 2018 is rotated, the drive shaft 2019 is driven to rotate, which in turn drives the lead screw 2022 to rotate. Through the lead screw nut 2021, the slide plate 2020 slides along the slide groove 2016. At the same time, the toothed plate 2015 moves horizontally. Since the toothed plate 2015 meshes with the external gear 2014, it drives the rotating shaft 202 to rotate, realizing the circumferential rotation of the side plate 201 and the infrared lens 2010. Finally, the angle of the infrared lens 2010 is adjusted to improve the detection effect.

[0024] In embodiment three, based on embodiment one, the protective mechanism 3 includes a protective cover 301 located outside the housing 1. A sealing ring 302 is fixedly connected to the bottom of the protective cover 301. Positioning rods 303 are fixedly connected to both sides of the protective cover 301. Two positioning cylinders 304 are symmetrically fixedly connected to the outside of the housing 1. The two positioning rods 303 are respectively inserted into the two positioning cylinders 304. Two positioning holes 9 are symmetrically provided on the top of the housing 1. The outer diameter of the two positioning rods 303 is equal to the inner diameter of the two positioning holes 9. A mounting plate 307 is fixedly installed on the side. Two guide rods 305 are symmetrically fixedly connected between the mounting plate 307 and the housing 1. A guide plate 306 is movably sleeved between the two guide rods 305. Two springs 308 are symmetrically fixedly connected between the guide plate 306 and the mounting plate 307. The two springs 308 are respectively sleeved on the outside of the two guide rods 305. A connecting shaft 309 is rotatably connected to the top of the guide plate 306. The end of the connecting shaft 309 away from the guide plate 306 is rotatably connected to the outside of the protective cover 301. First, move the protective cover 301 upwards, and drive the guide plate 306 to slide upwards along the two guide rods 305 via the connecting shaft 309. At this time, both springs 308 are stretched, and both positioning rods 303 rise until they are removed from the two positioning cylinders 304 respectively. Then, rotate the protective cover 301 to directly above the infrared lens 2010, and push the protective cover 301 downwards so that the two positioning rods 303 are inserted into the two positioning holes 9 respectively. Then, release the protective cover 301, so that the protective cover 301 moves downwards under the elastic force of the two springs 308 until the sealing ring 302 is attached to the top of the housing 1, thereby achieving a sealed protection for the infrared lens 2010. Finally, this prevents the infrared lens 2010 from being exposed to the outside and accumulating dust when the entire device is not in use.

[0025] In Example 4, based on Example 1, a battery compartment 11 is provided on the side of the grip 5, and a cover plate 4 is hinged to the inside of the battery compartment 11. By setting the battery compartment 11 and the cover plate 4, the lithium battery can be installed and removed, making it convenient to replace and charge. The front of the housing 1 is provided with an indicator light 10, a display screen 8 and an operation button 7 from top to bottom. The housing 1 is provided with a laser locator arranged coaxially with the infrared lens 2010. The laser point coincides with the infrared detection area, accurately marking the measured point. The infrared lens 2010 has a built-in filter, and the sealed box 2011 has a detector that is in close contact with the infrared lens 2010. The housing 1 has a data processing unit inside, which includes a processor, FPGA and storage module soldered on the motherboard. When electrical equipment is in operation, if there are faults such as poor contact, insulation aging, overload, or short circuit, the faulty part will experience a localized abnormal temperature rise due to abnormal resistance and increased energy loss. The exposed infrared lens 2010 of the device captures the infrared signal radiated from the surface of the equipment. After filtering out ambient light through the built-in filter, the signal is transmitted to the detector. The detector converts the infrared radiation energy into an electrical signal and transmits it to the data processing unit. The data processing unit completes the signal analog-to-digital conversion and thermal imaging data calculation through the FPGA chip and processor. It generates a visual thermal imaging image based on the temperature corresponding to the strength of the infrared energy. At the same time, it automatically analyzes and judges whether there is a fault by combining the preset temperature threshold. If an abnormal temperature is detected, the fault location is accurately marked by the laser locator, and the abnormal area and temperature value are displayed on the display screen 8. Finally, non-contact, fast, and accurate location of electrical equipment faults is achieved.

Claims

1. A rapid fault location device for electrical equipment based on infrared thermal imaging, comprising a housing (1), characterized in that: The bottom of the housing (1) is fixedly connected to a handle (5). The handle (5) and the housing (1) are integrally molded. A rubber sleeve (6) is fixedly fitted on the outside of the handle (5). The housing (1) is provided with an adjustment mechanism (2) and a protective mechanism (3). The adjustment mechanism (2) includes a side plate (201) located above the housing (1). A rotating shaft (202) is fixedly connected to the bottom of the side plate (201). A receiving frame (203) is fixedly connected to the bottom of the handle (5). An inner plate (204) is fixedly installed on the inner side of the receiving frame (203). The bottom end of the rotating shaft (202) passes through the housing (1) and is rotatably connected to the inner plate (204). A U-shaped plate (207) is fixedly connected to the top of the side plate (201). An inner shaft (2012) is rotatably connected to the inner side of the U-shaped plate (207). A support frame (209) is fixedly sleeved on the middle of the outer side of the inner shaft (2012). A sealing box (2011) is fixedly installed on the outer side of the support frame (209). An infrared lens (2010) is fixedly installed on the sealing box (2011).

2. The rapid fault location device for electrical equipment based on infrared thermal imaging according to claim 1, characterized in that: A small motor (205) is fixedly installed on the inner side of the U-shaped plate (207). A drive shaft (2013) is fixedly connected to the small motor (205). A drive bevel gear (206) is fixedly connected to the end of the drive shaft (2013) away from the small motor (205). A driven bevel gear (208) is fixedly installed on the outer side of the inner shaft (2012). The driven bevel gear (208) meshes with the drive bevel gear (206).

3. The rapid fault location device for electrical equipment based on infrared thermal imaging according to claim 1, characterized in that: The inner plate (204) has a sliding groove (2016) on its outer side. A sliding plate (2020) is slidably connected to the inner side of the sliding groove (2016). A toothed plate (2015) is fixedly connected to the side of the sliding plate (2020) near the rotating shaft (202). An external gear (2014) is fixedly installed on the outer side of the rotating shaft (202). The external gear (2014) meshes with the toothed plate (2015).

4. The rapid fault location device for electrical equipment based on infrared thermal imaging according to claim 1, characterized in that: The inner plate (204) is provided with a lead screw (2022) on the outside, and a nut (2021) is threaded onto the outside of the lead screw (2022). The slide plate (2020) is fixed to the outside of the nut (2021).

5. The rapid fault location device for electrical equipment based on infrared thermal imaging according to claim 1, characterized in that: The inner plate (204) is symmetrically fixedly connected to side block two (2024) and side block one (2017). Side block two (2024) is rotatably connected to a support shaft (2023) on the side closer to side block one (2017). One end of the lead screw (2022) is fixedly connected to the end of the support shaft (2023) away from side block two (2024), and the other end is fixedly connected to a drive shaft (2019). The end of the drive shaft (2019) away from the lead screw (2022) passes through side block one (2017) and is fixedly connected to a handwheel (2018).

6. The rapid fault location device for electrical equipment based on infrared thermal imaging according to claim 1, characterized in that: The protective mechanism (3) includes a protective cover (301) located outside the housing (1). A sealing ring (302) is fixedly connected to the bottom of the protective cover (301). Positioning rods (303) are fixedly connected to both sides of the protective cover (301). Two positioning cylinders (304) are symmetrically fixedly connected to the outside of the housing (1). The two positioning rods (303) are respectively inserted into the two positioning cylinders (304). Two positioning holes (9) are symmetrically provided on the top of the housing (1). The outer diameter of the two positioning rods (303) is equal to the inner diameter of the two positioning holes (9).

7. The rapid fault location device for electrical equipment based on infrared thermal imaging according to claim 1, characterized in that: An mounting plate (307) is fixedly installed on the outer side of the housing (1). Two guide rods (305) are symmetrically fixedly connected between the mounting plate (307) and the housing (1). A guide plate (306) is movably sleeved between the two guide rods (305). Two springs (308) are symmetrically fixedly connected between the guide plate (306) and the mounting plate (307). The two springs (308) are respectively sleeved on the outer side of the two guide rods (305). A connecting shaft (309) is rotatably connected to the top of the guide plate (306). The end of the connecting shaft (309) away from the guide plate (306) is rotatably connected to the outer side of the protective cover (301).

8. The rapid fault location device for electrical equipment based on infrared thermal imaging according to claim 1, characterized in that: The grip (5) has a battery compartment (11) on its side, and a cover plate (4) is hinged to the inside of the battery compartment (11).

9. The rapid fault location device for electrical equipment based on infrared thermal imaging according to claim 1, characterized in that: The front of the housing (1) is provided with an indicator light (10), a display screen (8) and operation buttons (7) from top to bottom.

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