High-voltage signboard weather resistance accelerated aging test device

Abstract

The invention discloses a high-voltage signboard weatherability accelerated aging test device, and belongs to the technical field of high-voltage signboard tests, the high-voltage signboard weatherability accelerated aging test device comprises a test box, one side in the test box is provided with a test cavity, and the high-voltage signboard weatherability accelerated aging test device also comprises a xenon lamp unit installed at the center position in the test cavity. In the invention, an external air supply device can be conveyed into the air conveying cavity through the pipeline, the mounting sleeve, the sliding sealing ring and the middle cavity, and then is conveyed into the spiral channel through a plurality of air inlets, the spiral channel can force disordered and turbulent gas entering the circular sleeve to flow along a preset path, and an air curtain is formed on the surface of the xenon lamp unit; under the rotating action of the connecting sleeve and the circular sleeve, a dynamic air curtain barrier rotating around the xenon lamp unit can be formed, and the rotating air curtain can more effectively clean a static air layer on the surface of a lamp tube and water drops possibly attached to the surface of the lamp tube.

Description

Technical Field

[0001] This invention belongs to the field of high-voltage sign testing technology, and in particular relates to a high-voltage sign weathering accelerated aging test device. Background Technology

[0002] High-voltage signs, also known as power safety warning signs, are conspicuous signs specifically designed and installed in dangerous areas such as high-voltage electrical equipment, transmission lines, and substation facilities. Their core function is to convey danger information, serve as warnings and reminders, prevent accidents, and ensure the safety of personnel and the stable operation of the power grid. However, high-voltage signs are almost entirely exposed to harsh outdoor environments for extended periods, often subjected to sunlight, rain, high and low temperature cycles, and wind and sand erosion. If the quality of the signs is substandard, their performance will be affected by long-term natural environmental factors. Therefore, it is necessary to use equipment to test and experiment on their weather resistance and aging performance.

[0003] When the existing high-pressure sign weathering aging test equipment is first used, that is, when it starts from low temperature or when continuous testing is carried out after spraying, water droplets may adhere to the outer surface of the test lamp tube. This will cause optical distortion of the test lamp tube, destroy the spectral uniformity, and thus lead to a significant decrease in the effective light energy that finally reaches the sample surface, thereby affecting the test accuracy of the equipment. Therefore, it needs to be improved. Summary of the Invention

[0004] The purpose of this invention is to address the problem that in existing technologies, when first used, i.e., when starting from a low temperature or when conducting continuous testing after spraying, water droplets may adhere to the outer surface of the test lamp tube. This can cause optical distortion of the test lamp tube, disrupt spectral uniformity, and lead to a significant decrease in the effective light energy reaching the sample surface, thus affecting the test accuracy of the device. Therefore, this invention proposes a high-pressure sign weathering accelerated aging test device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A high-pressure sign weathering accelerated aging test device includes a test chamber, wherein a test cavity is formed on one side of the test chamber, and further includes: The xenon lamp unit is installed in the center of the test chamber; The rotating frame and driving mechanism include a connecting sleeve and a rotating sleeve, both of which rotate around the outer periphery of the xenon lamp unit, for mounting an external high-voltage sign and driving it to rotate around the xenon lamp unit as the center; The anti-condensation component, installed at the bottom of the connecting sleeve, is used to convert the direct current gas into a spiral gas that acts on the outer surface of the xenon lamp unit. The flow channel adjustment component is installed inside the anti-condensation component and is used to adjust the channels inside the anti-condensation component accordingly. The air outlet adjustment component is installed inside the anti-condensation component and is used to adjust the airflow of the anti-condensation component. The air regulating unit is installed inside the rotating sleeve and is used to regulate the direction of gas flow into the test chamber.

[0006] As a further description of the above technical solution: The anti-condensation component includes: A circular sleeve, the top of which is fixedly connected to the bottom of the rotating sleeve, and an air delivery chamber is provided on the top side inside the circular sleeve; Multiple air inlets are arranged in a circular array on the top side inside the circular sleeve, and all of the air inlets are connected to the air delivery cavity; Multiple spiral channels are arranged in a circular array inside the circular sleeve, and the spiral channels are connected to the air inlet; Multiple air outlets are arranged in a circular array inside the circular sleeve, and the air outlets are connected to the spiral channel. The bottom of the air outlets is set in a cone shape.

[0007] As a further description of the above technical solution: The flow channel adjustment component includes: Two second liquid bladders are arranged in a circumferential array inside the circular sleeve, and the top of the second liquid bladders is fixedly connected to the inner wall of the circular sleeve. One side of the second liquid bladder is connected to a liquid outlet pipe, and a switch valve is provided on the liquid outlet pipe. The first annular plate is slidably connected inside the circular sleeve; Two second springs are arranged in a circumferential array inside the circular sleeve, and the two sides of the second springs are fixedly connected to the first annular plate and the inner wall of the circular sleeve, respectively. The second springs are located on the side away from the second liquid bladder. Multiple sector-shaped blocks are arranged in a circular array on the outer periphery of the first annular plate, and connecting blocks are fixedly connected to the bottom of the sector-shaped blocks; The spiral block is slidably connected inside the circular sleeve, and the spiral block is located inside the spiral channel; The trigger unit is installed at the bottom of the rotating sleeve and is used to adjust the position of the spiral block relative to the spiral channel. The rotating sleeve has multiple rectangular through holes arranged in a circular array on the top side inside. The rotating sleeve is rotatably connected to the inside of the test chamber.

[0008] As a further description of the above technical solution: The triggering unit includes: Two first springs are fixedly connected to the inner wall of the rotating sleeve on one side, and a circular through hole is opened on one side of the rotating sleeve. The sliding plate is fixedly connected to two first springs on one side, and the sliding plate is slidably connected inside the rotating sleeve; The first liquid bladder is installed between the two first springs, and its two sides are fixedly connected to the sliding plate and the inner wall of the rotating sleeve, respectively. The first liquid bladder is connected to the second liquid bladder through an infusion tube. A one-way valve is provided on the infusion tube, and a one-way inlet tube is connected to one side of the first liquid bladder. The abutment is fixed at one end to one side of the sliding plate, and the other end of the abutment extends into the interior of the rotating sleeve. The abutment is slidably connected inside the circular through hole. The annular block is located on the outer periphery of the rotating sleeve, and the outer periphery of the annular block is fixedly connected to the inner wall of the test chamber. The protrusion is fixed to the inner circumference of the annular block and is used by the annular block to drive the protrusion to rotate and trigger the compression of the pusher.

[0009] As a further description of the above technical solution: The rotating frame and driving mechanism also include: Multiple connecting frames are arranged in a circular array on the outer periphery of the connecting sleeve and the rotating sleeve, and the two sides of the connecting frames are fixedly connected to the outer walls of the connecting sleeve and the rotating sleeve, respectively. Two card holders are fitted onto the outer periphery of the connecting frame; The hollow sleeve is fixedly connected at the bottom to the top of the connecting sleeve, and the middle cavity inside the hollow sleeve is connected to the air supply cavity. The mounting sleeve rotates on the outer periphery of the hollow sleeve, and the interior of the mounting sleeve is connected to the intermediate cavity through a sliding sealing ring.

[0010] As a further description of the above technical solution: The rotating frame and driving mechanism also include: The first bevel gear is sleeved on the outer circumference of the hollow sleeve; The second bevel gear is meshed with the outer circumference of the first bevel gear, and a rotating shaft is fixedly connected inside the second bevel gear; The drive motor has one end of its output shaft fixedly connected to the rotating shaft, and the drive motor is fixedly connected inside the test chamber by a support frame.

[0011] As a further description of the above technical solution: The air outlet adjustment component includes: A conical block is fixed inside a circular sleeve and is located inside an air outlet. The conical block has a cavity inside. A connecting cylinder is installed inside the conical block, and a first airbag is fixedly connected to one side of the connecting cylinder. The first airbag is connected to an external auxiliary air supply device through a pipe and an outer sealing ring. A circular plate is slidably connected inside the connecting cylinder, and one side of the circular plate is fixedly connected to the outer wall of the first airbag. The guide rod is slidably connected inside the connecting cylinder, with one end of the guide rod fixedly connected to the circular plate and the other end of the guide rod extending to the outside of the connecting cylinder; A trapezoidal block is fixedly connected to one end of the guide rod, and the trapezoidal block is slidably connected inside the conical block. The trapezoidal block matches the conical surface of the air outlet. The third spring is sleeved on the outer periphery of the guide rod, and its two sides are fixedly connected to the circular plate and the inner wall of the connecting cylinder, respectively.

[0012] As a further description of the above technical solution: The air conditioning unit includes: The second annular plate is slidably connected inside the rotating sleeve. Both sides of the bottom of the second annular plate are connected to screws. The screws are threaded inside the rotating sleeve, and the bottom of the screws extends to the outer periphery of the rotating sleeve and is fixedly connected to a handle. Multiple racks are arranged in a circular array on the outer periphery of the second annular plate; Multiple gears are arranged in a circular array on the outer periphery of the second annular plate, and the gears mesh with the rack; Multiple connecting shafts are arranged in a circular array on the outer periphery of the second annular plate, and the connecting shafts are fixed inside the gear.

[0013] As a further description of the above technical solution: The air conditioning unit also includes: Multiple adjusting plates are arranged in a circular pattern inside the rectangular through hole, and the adjusting plates are installed on the outer periphery of the connecting shaft; Multiple expansion plates are arranged in a circle between adjustment plates. Each adjustment plate has an internal cavity. The expansion plates are slidably connected inside the adjustment plates. The expansion plates are configured as flexible components.

[0014] As a further description of the above technical solution: An environmental control unit, installed on one side of the top of the test chamber, is used to regulate the temperature and humidity inside the test chamber; The spray unit is installed at the center of the test chamber and is rotatably connected inside the rotating sleeve. Spray pipes are connected to both sides of the top of the spray unit. The bottom of the spray unit is connected to the liquid supply unit through a water supply pipe. A liquid extraction unit is provided at the top of the spray unit and is connected to an external liquid extraction pump.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, through the anti-condensation component, the external air supply device delivers air to the air delivery chamber through pipes, mounting sleeves, sliding sealing rings, and intermediate chambers. Then, it delivers air to the spiral channel through multiple air inlets. The spiral channel forces the disordered, turbulent gas entering the circular sleeve to flow along a preset path and form an air curtain on the surface of the xenon lamp unit. The path of the gas flow in the spiral channel becomes longer, and due to centrifugal force, combined with the rotation of the connecting sleeve and the circular sleeve, a dynamic air curtain barrier is formed around the xenon lamp unit. The rotating air curtain can more effectively sweep away the static air layer and water droplets that may be attached to the lamp tube surface, thereby improving the anti-condensation and cleaning effect of the device. 2. In this invention, the flow channel adjustment component and the air outlet adjustment component, under the action of the second spring, initially keep the spiral channel in a narrow state. The external auxiliary air supply device delivers gas to the first airbag through the outer sealing ring and pipe, causing the guide rod to move the trapezoidal block towards the air outlet, thereby reducing the air outlet diameter. Combined with the narrow spiral channel, when the device starts working, under the premise of a relatively stable total air flow, not only will more gas be directly ejected from the air outlet, but the high-speed airflow from the air outlet nozzle will also have a stronger impact force. Combined with the rotation of the circular sleeve, this creates a high-speed, high-intensity rotating air curtain on the surface of the xenon lamp unit. It can more effectively tear and blow away large water droplets adhering to the surface of the xenon lamp unit, thereby preventing external factors from affecting the test accuracy of the xenon lamp unit. As time and the cumulative effect of the rotating sleeve increase, the flow resistance inside the spiral channel will gradually decrease, and the spacious spiral channel can guide and homogenize the airflow very well. After the gas is fully rectified, it will form a very stable, uniform and circumferentially consistent rotating air curtain, which can provide continuous and stable protection for the surface of the xenon lamp unit. This device can optimize the performance of the air curtain in real time according to the actual working conditions, and flexibly switch between the powerful water droplet removal mode and the stable protection mode, so that the device can achieve better anti-condensation effect and higher energy efficiency. 3. In this invention, the cooling airflow is guided evenly across the entire sample rack surface by the adjustable plate and the expansion plate through the set air conditioning unit. The operator manually operates the handle and drives the screw to rotate, so that the second annular plate drives the gear, connecting shaft and adjustable plate to rotate through the rack and pinion, so as to adjust the use angle of the adjustable plate and the expansion plate, so that it is evenly sprayed onto the sample surface of different thicknesses. This provides a consistent and controllable convective heat transfer environment for high-pressure sign samples of different thicknesses, further improving the applicability of the device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the overall three-dimensional structure of the rotating frame, drive mechanism, and environmental adjustment unit in this invention; Figure 3 This is a schematic diagram of the overall three-dimensional structure of the rotating frame and driving mechanism in this invention; Figure 4 In this invention Figure 3 A magnified schematic diagram of the structure at point A; Figure 5 This is a schematic diagram of the overall three-dimensional structure of the rotating frame, driving mechanism, and spraying unit in this invention from another perspective. Figure 6 This is a schematic diagram of the overall three-dimensional structure of the rotating frame and driving mechanism in this invention from another perspective; Figure 7 In this invention Figure 6 A magnified schematic diagram of the structure at point B; Figure 8 In this invention Figure 6 A magnified schematic diagram of the structure at point C; Figure 9 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 10 In this invention Figure 9 A magnified schematic diagram of the structure at point D; Figure 11 This is a schematic diagram of the overall three-dimensional structure of the anti-condensation component in this invention; Figure 12 This is a schematic diagram of the internal three-dimensional structure of the anti-condensation component in this invention; Figure 13 This is a schematic diagram of the overall three-dimensional structure of the flow channel adjustment component and the air outlet adjustment component in this invention; Figure 14 This is a partial three-dimensional structural diagram of the air outlet adjustment component in this invention.

[0017] Legend: 1. Test chamber; 2. Xenon lamp unit; 3. Rotating frame and drive mechanism; 301. Connecting sleeve; 302. Connecting frame; 303. Clamp; 304. Rotating sleeve; 305. Hollow sleeve; 306. First bevel gear; 307. Second bevel gear; 308. Rotating shaft; 309. Drive motor; 4. Environmental control unit; 5. Spray unit; 6. Anti-condensation component; 601. Circular sleeve; 602. Air supply chamber; 603. Air inlet; 604. Spiral channel; 605. Air outlet; 7. Flow channel adjustment component; 701. First spring; 702. Sliding plate; 703. First liquid... 704. Airbag; 705. Abutment; 706. Annular block; 707. Protrusion; 708. Second liquid bag; 709. First annular plate; 710. Second spring; 711. Fan-shaped block; 712. Connecting block; 713. Spiral block; 8. Air outlet adjustment assembly; 801. Conical block; 802. Connecting cylinder; 803. First airbag; 804. Circular plate; 805. Third spring; 806. Guide rod; 807. Trapezoidal block; 9. Air conditioning unit; 901. Second annular plate; 902. Rack; 903. Gear; 904. Connecting shaft; 905. Adjusting plate; 906. Expansion plate. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-14 This invention provides a technical solution: a high-pressure sign weathering accelerated aging test device, comprising a test chamber 1, with a test cavity opened on one side inside the test chamber 1, and further comprising: Xenon lamp unit 2 is installed in the center of the test chamber; The rotating frame and drive mechanism 3 includes a connecting sleeve 301 and a rotating sleeve 304. Both the connecting sleeve 301 and the rotating sleeve 304 rotate on the outer periphery of the xenon lamp unit 2, and are used to install external high-voltage signs and drive them to rotate around the xenon lamp unit 2. The anti-condensation component 6 is installed at the bottom of the connecting sleeve 301 and is used to convert the direct current gas into a spiral and act on the outer surface of the xenon lamp unit 2. The flow channel adjustment component 7 is installed inside the anti-condensation component 6 and is used to adjust the flow channel inside the anti-condensation component 6 accordingly. The air outlet adjustment component 8 is installed inside the anti-condensation component 6 and is used to adjust the airflow of the anti-condensation component 6. The air regulating unit 9 is installed inside the rotating sleeve 304 and is used to regulate the direction of gas flow into the test chamber; Anti-condensation component 6 includes: The top of the circular sleeve 601 is fixedly connected to the bottom of the rotating sleeve 301, and an air delivery cavity 602 is provided on the top side inside the circular sleeve 601. Multiple air inlets 603 are arranged in a circumferential array on the top side inside the circular sleeve 601, and all multiple air inlets 603 are connected to the air delivery cavity 602. Multiple spiral channels 604 are arranged in a circular array inside the circular sleeve 601, and the spiral channels 604 are connected to the air inlet 603. Multiple air outlets 605 are arranged in a circular array inside the circular sleeve 601, and the air outlets 605 are connected to the spiral channel 604. The bottom of the air outlets 605 is set as a cone. The rotating frame and drive mechanism 3 also include: Multiple connecting frames 302 are arranged in a circular array on the outer periphery of the connecting sleeve 301 and the rotating sleeve 304, and the two sides of the connecting frame 302 are fixedly connected to the outer walls of the connecting sleeve 301 and the rotating sleeve 304, respectively. Two card holders 303 are fitted onto the outer periphery of the connecting frame 302; The hollow sleeve 305 is fixedly connected at the bottom to the top of the connecting sleeve 301, and the middle cavity inside the hollow sleeve 305 is connected to the air supply cavity 602. The mounting sleeve rotates on the outer periphery of the hollow sleeve 305, and the interior of the mounting sleeve is connected to the intermediate cavity through a sliding sealing ring; The first bevel gear 306 is sleeved on the outer periphery of the hollow sleeve 305; The second bevel gear 307 is meshed with the outer periphery of the first bevel gear 306, and a rotating shaft 308 is fixedly connected inside the second bevel gear 307. The drive motor 309 has one end of its output shaft fixedly connected to the rotating shaft 308, and the drive motor 309 is fixedly connected inside the test chamber 1 through a support frame.

[0020] Detailed Implementation: First, place the device in a suitable location and fix the external high-voltage sign using an external clamp. Then, the external high-voltage sign is secured to the bracket 303 using an integrated external clamp, thus fixing the external high-voltage sign to the connecting frame 302. Simultaneously, the xenon lamp unit 2 and drive motor 309 are activated. The xenon lamp unit 2 performs a weather resistance test on the high-voltage sign. The drive motor 309 drives the rotating shaft 308 and the second bevel gear 307 to rotate. Utilizing the linkage effect between the second bevel gear 307 and the first bevel gear 306, power is transmitted to the first bevel gear 306, causing it to drive the hollow sleeve 305, connecting sleeve 301, connecting frame 302, bracket 303, rotating sleeve 304, and high-voltage sign to rotate. This ensures the high-voltage sign sample surface receives uniform light irradiance and temperature from the xenon lamp unit 2, simulating a real outdoor environment and ensuring the comparability and reproducibility of the test results. An external gas supply device will supply gas through a pipeline. Gas is delivered into the mounting sleeve, then through a sliding sealing ring and an intermediate cavity into the air supply chamber 602, and then through multiple air inlets 603 into the spiral channel 604. The spiral channel 604 forces the disordered, turbulent gas entering the circular sleeve 601 to flow along a preset spiral path, forming an air curtain on the surface of the xenon lamp unit 2. The gas flows along a longer path in the spiral channel 604, and due to centrifugal force, combined with the rotation of the connecting sleeve 301 and the circular sleeve 601, a dynamic air curtain barrier is formed around the xenon lamp unit 2. This rotating air curtain can more effectively sweep away the static air layer and any water droplets that may be attached to the lamp tube surface, thereby improving the device's anti-condensation and cleaning effect. The external gas supply device can select heated gas according to actual needs. The control system, humidification system, sensor system, and circuit system involved in this device are all known and disclosed technologies known to those skilled in the art, and therefore are not described in detail in this application.

[0021] The flow channel adjustment component 7 includes: Two second liquid bladders 707 are arranged in a circumferential array inside the circular sleeve 601, and the top of the second liquid bladder 707 is fixedly connected to the inner wall of the circular sleeve 601. A liquid outlet pipe is connected to one side of the second liquid bladder 707, and a switch valve is provided on the liquid outlet pipe. The first annular plate 708 is slidably connected inside the circular sleeve 601; Two second springs 709 are arranged in a circumferential array inside the circular sleeve 601, and the two sides of the second springs 709 are fixedly connected to the first annular plate 708 and the inner wall of the circular sleeve 601, respectively. The second springs 709 are located on the side away from the second liquid bladder 707. Multiple sector blocks 710 are arranged in a circular array on the outer periphery of the first annular plate 708, and a connecting block 711 is fixedly connected to the bottom of the sector blocks 710; The spiral block 712 is slidably connected inside the circular sleeve 601, and the spiral block 712 is located inside the spiral channel 604; The triggering unit is installed at the bottom of the rotating sleeve 304 and is used to adjust the position of the spiral block 712 relative to the spiral channel 604. Multiple rectangular through holes are distributed in a circumferential array on the top side inside the rotating sleeve 304. The rotating sleeve 304 is rotatably connected to the inside of the test chamber 1. The triggering unit includes: Two first springs 701 are fixedly connected to the inner wall of the rotating sleeve 304 on one side, and a circular through hole is opened on one side of the rotating sleeve 304. The sliding plate 702 is fixedly connected to two first springs 701 on one side, and the sliding plate 702 is slidably connected inside the rotating sleeve 304. The first liquid bladder 703 is installed between the two first springs 701, and the two sides of the first liquid bladder 703 are fixedly connected to the sliding plate 702 and the inner wall of the rotating sleeve 304 respectively. The first liquid bladder 703 is connected to the second liquid bladder 707 through the infusion tube. A one-way valve is provided on the infusion tube, and a one-way inlet tube is connected to one side of the first liquid bladder 703. The abutment 704 is fixed at one end to one side of the sliding plate 702, and the other end of the abutment 704 extends into the interior of the rotating sleeve 304. The abutment 704 is slidably connected inside the circular through hole. The annular block 705 is located on the outer periphery of the rotating sleeve 304, and the outer periphery of the annular block 705 is fixedly connected to the inner wall of the test chamber 1. The protrusion 706 is fixed to the inner circumference of the annular block 705 and is used by the annular block 705 to drive the protrusion 706 to rotate and trigger the compression of the pusher 704. The air outlet adjustment component 8 includes: A conical block 801 is fixed inside the circular sleeve 601, and the conical block 801 is located inside the air outlet 605. A cavity is opened inside the conical block 801. The connecting cylinder 802 is installed inside the conical block 801, and a first airbag 803 is fixedly connected to one side inside the connecting cylinder 802. The first airbag 803 is connected to an external auxiliary air supply device through a pipe and an outer sealing ring. A circular plate 804 is slidably connected inside the connecting cylinder 802, and one side of the circular plate 804 is fixedly connected to the outer wall of the first airbag 803. The guide rod 806 is slidably connected inside the connecting cylinder 802, and one end of the guide rod 806 is fixedly connected to the circular plate 804, while the other end of the guide rod 806 extends to the outside of the connecting cylinder 802. Trapezoidal block 807 is fixedly connected to one end of guide rod 806, and slidably connected inside conical block 801. Trapezoidal block 807 matches the conical surface of air outlet 605. The third spring 805 is sleeved on the outer periphery of the guide rod 806, and the two sides of the third spring 805 are fixedly connected to the inner wall of the circular plate 804 and the connecting cylinder 802, respectively.

[0022] Detailed Implementation: Under the action of the second spring 709, the first annular plate 708 drives the fan-shaped block 710, connecting block 711, and spiral block 712 to move downwards, so that the spiral channel 604 is initially in a narrow state. The external auxiliary air supply device delivers gas to the inside of the first airbag 803 through the outer sealing ring and pipe, causing the first airbag 803 to expand and drive the circular plate 804, the third spring 805, and the guide rod 806 to compress, so that the guide rod 806 drives the trapezoidal block 807 to move towards the air outlet 605, thereby reducing the air outlet 605. The small air outlet diameter, combined with the narrow spiral channel 604, ensures that when the device starts up from a low temperature, under the premise of a relatively stable total gas flow, not only will more gas be ejected directly from the air outlet 605, but the high-speed airflow from the nozzle of the air outlet 605 will also have a stronger impact force. Combined with the rotation of the circular sleeve 601, this creates a high-speed, high-intensity rotating air curtain on the surface of the xenon lamp unit 2, which can more effectively tear apart and disperse large water droplets adhering to the surface of the xenon lamp unit 2, thereby preventing external factors from affecting the experimental accuracy of the xenon lamp unit 2. As the rotating sleeve 304 rotates... The movement causes the first spring 701, sliding plate 702, first liquid bladder 703, and abutment 704 to rotate around the axis of the annular block 705. As the rotating sleeve 304 rotates one revolution, under the action of the protrusion 706, the abutment 704 causes the sliding plate 702 to compress the first liquid bladder 703 and the first spring 701. This forces the liquid inside the first liquid bladder 703 to be transported through the infusion tube to the second liquid bladder 707, causing the second liquid bladder 707 to expand and causing the first annular plate 708, sector block 710, connecting block 711, and spiral block 712 to move slightly upwards. As time and the rotating sleeve 304 accumulate, the flow resistance inside the spiral channel 604 gradually decreases. The spacious spiral channel 604 can effectively guide and homogenize the airflow, so that after the gas is fully rectified, it will form a very stable, uniform, and circumferentially consistent rotating air curtain, which can provide continuous and stable protection for the surface of the xenon lamp unit 2. This device can optimize the performance of the air curtain in real time according to the actual working conditions, and flexibly switch between the powerful water removal mode and the energy-saving stable protection mode, thereby achieving better anti-condensation effect, higher energy efficiency, and longer component life.

[0023] Air conditioning unit 9 includes: The second annular plate 901 is slidably connected inside the rotating sleeve 304. Both sides of the bottom of the second annular plate 901 are connected to screws. The screws are threaded inside the rotating sleeve 304, and the bottom of the screws extends to the outer periphery of the rotating sleeve and is fixedly connected to a handle. Multiple racks 902 are arranged in a circular array on the outer periphery of the second annular plate 901; Multiple gears 903 are arranged in a circular array on the outer periphery of the second annular plate 901, and the gears 903 mesh with the rack 902; Multiple connecting shafts 904 are arranged in a circular array on the outer periphery of the second annular plate 901, and the connecting shafts 904 are fixed inside the gear 903; Multiple adjusting plates 905 are arranged in a circular pattern inside the rectangular through hole, and the adjusting plates 905 are installed on the outer periphery of the connecting shaft 904; Multiple expansion plates 906 are distributed in a circular pattern between adjustment plates 905. An inner cavity is opened inside the adjustment plate 905. The expansion plates 906 are slidably connected inside the adjustment plate 905. The expansion plates 906 are set as flexible parts. Environmental control unit 4 is installed on one side of the top of the test chamber and is used to regulate the temperature and humidity inside the test chamber; The spray unit 5 is installed at the center of the test chamber and is rotatably connected inside the rotating sleeve 304. Spray pipes are connected to both sides of the top of the spray unit 5. The bottom of the spray unit 5 is connected to the liquid supply unit through the water supply pipe. The top of the spray unit 5 is equipped with a liquid extraction unit, which is connected to an external liquid extraction pump.

[0024] Detailed Implementation: The cooling airflow is guided evenly across the entire sample holder surface by adjusting plate 905 and expanding plate 906. The operator manually operates the handle to drive the screw to rotate, adjusting the height of the second annular plate 901 and multiple racks 902. The racks 902 drive the gears 903, connecting shaft 904, and adjusting plate 905 to rotate. During the rotation of adjusting plate 905, expanding plate 906 is simultaneously extended to adjust the angle of use of adjusting plate 905 and expanding plate 906, ensuring that the airflow is evenly sprayed onto the sample surface of different thicknesses. This provides a consistent and controllable convective heat transfer environment for high-pressure sign samples of different thicknesses, further improving the applicability of the device. The expanding plate 906 can be selected as a mesh plate according to actual needs.

[0025] Working principle: When in use, first place the device in a suitable place and fix the external high-voltage sign with the external clamp. Then, the external high-voltage sign is fixed on the bracket 303 by the external clamp and the external high-voltage sign, so as to fix the external high-voltage sign on the connecting bracket 302. Then, the xenon lamp unit 2 and the drive motor 309 are started at the same time. The xenon lamp unit 2 will perform a weather resistance test on the high-voltage sign. The drive motor 309 drives the rotating shaft 308 and the second bevel gear 307 to rotate. Utilizing the linkage effect between the second bevel gear 307 and the first bevel gear 306, the power is transmitted to the first bevel gear 306, causing the first bevel gear 306 to drive the hollow sleeve 305, connecting sleeve 301, connecting frame 302, card holder 303, rotating sleeve 304 and high-pressure sign to rotate, so that the surface of the high-pressure sign sample receives uniform light irradiance and temperature from the xenon lamp unit 2. An external gas supply device delivers gas to the inside of the mounting sleeve through a pipe. The gas is then delivered to the air supply chamber 602 through a sliding sealing ring and an intermediate cavity. After that, it is delivered to the spiral channel 604 through multiple air inlets 603. The spiral channel 604 forces the disordered and turbulent gas entering the circular sleeve 601 to flow along a preset spiral path and form a rotating and dynamic air curtain barrier on the surface of the xenon lamp unit 2. Under the action of the second spring 709, the first annular plate 708 drives the fan-shaped block 710, the connecting block 711 and the spiral block 712 to move downward, so that the spiral channel 604 is initially in a narrow state. At this time, the external auxiliary air supply device delivers gas to the first airbag 803 through the outer sealing ring and the pipe, causing the first airbag 803 to expand and drive the circular plate 804, the third spring 805 and the guide rod 806 to squeeze. This causes the guide rod 806 to drive the trapezoidal block 807 to move towards the air outlet 605, so as to reduce the air outlet diameter of the air outlet 605. With the narrow spiral channel 604, when the device starts from a low temperature, under the premise that the total flow of the air source is relatively stable, more gas will be sprayed directly from the air outlet 605, which can more effectively tear and blow away the large water droplets attached to the surface of the xenon lamp unit 2. As the rotating sleeve 304 rotates, it drives the first spring 701, sliding plate 702, first liquid bladder 703, and abutment 704 to rotate around the axis of the annular block 705. When the rotating sleeve 304 rotates once, under the action of the protrusion 706, the abutment 704 drives the sliding plate 702 to squeeze the first liquid bladder 703 and the first spring 701, and the liquid inside the first liquid bladder 703 is transported to the inside of the second liquid bladder 707 through the infusion tube, causing the second liquid bladder 707 to expand and drive the first annular plate 708, fan-shaped block 710, connecting block 711, and spiral block 712 to move upward slightly. As time and the cumulative increase of the rotating sleeve 304, the flow resistance inside the spiral channel 604 will gradually decrease. The spacious spiral channel 604 can guide and homogenize the airflow very well, and can provide continuous and stable protection for the surface of the xenon lamp unit 2. The cooling airflow is guided evenly across the entire sample holder surface by adjusting plate 905 and expanding plate 906. The operator manually operates the handle to drive the screw to rotate, adjusting the height of the second annular plate 901 and multiple racks 902. The racks 902 drive the gears 903, connecting shaft 904 and adjusting plate 905 to rotate. During the rotation of adjusting plate 905, expanding plate 906 is simultaneously driven to adjust the angle of use of adjusting plate 905 and expanding plate 906, so that they can be evenly sprayed onto the sample surface of different thicknesses.

[0026] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-pressure signboard weathering accelerated aging test device, comprising a test chamber (1), wherein a test cavity is provided on one side of the test chamber (1), characterized in that, Also includes: The xenon lamp unit (2) is installed in the center of the test chamber; The rotating frame and driving mechanism (3) includes a connecting sleeve (301) and a rotating sleeve (304). The connecting sleeve (301) and the rotating sleeve (304) both rotate on the outer periphery of the xenon lamp unit (2) and are used to install external high-voltage signboards and drive them to rotate around the xenon lamp unit (2). The anti-condensation component (6) is installed at the bottom of the connecting sleeve (301) and is used to convert the direct current gas into a spiral and act on the outer surface of the xenon lamp unit (2); The flow channel adjustment component (7) is installed inside the anti-condensation component (6) and is used to adjust the flow channel inside the anti-condensation component (6). An air outlet adjustment component (8) is installed inside the anti-condensation component (6) and is used to adjust the air outlet volume of the anti-condensation component (6); The air regulating unit (9) is installed inside the rotating sleeve (304) and is used to regulate the direction of gas flow into the test chamber.

2. The accelerated aging test device for weather resistance of high-voltage signboards according to claim 1, characterized in that, The anti-condensation component (6) includes: The top of the circular sleeve (601) is fixedly connected to the bottom of the rotating sleeve (301), and an air supply cavity (602) is opened on the top side inside the circular sleeve (601). Multiple air inlets (603) are arranged in a circular array on the top side inside the circular sleeve (601), and all multiple air inlets (603) are connected to the air delivery cavity (602); Multiple spiral channels (604) are arranged in a circular array inside the circular sleeve (601), and the spiral channels (604) are connected to the air inlet (603); Multiple air outlets (605) are arranged in a circular array inside the circular sleeve (601), and the air outlets (605) are connected to the spiral channel (604). The bottom of the air outlets (605) is set as a cone.

3. The accelerated aging test device for weather resistance of high-voltage signboards according to claim 2, characterized in that, The flow channel adjustment assembly (7) includes: Two second liquid bladders (707) are arranged in a circumferential array inside the circular sleeve (601), and the top of the second liquid bladder (707) is fixedly connected to the inner wall of the circular sleeve (601). A liquid outlet pipe is connected to one side of the second liquid bladder (707), and a switch valve is provided on the liquid outlet pipe. The first annular plate (708) is slidably connected inside the circular sleeve (601); Two second springs (709) are arranged in a circumferential array inside the circular sleeve (601), and the two sides of the second springs (709) are fixedly connected to the first annular plate (708) and the inner wall of the circular sleeve (601) respectively. The second springs (709) are located on the side away from the second liquid bladder (707). Multiple sector blocks (710) are arranged in a circular array on the outer periphery of the first annular plate (708), and a connecting block (711) is fixedly connected to the bottom of the sector blocks (710). The spiral block (712) is slidably connected inside the circular sleeve (601), and the spiral block (712) is located inside the spiral channel (604); The trigger unit is installed at the bottom of the rotating sleeve (304) and is used to adjust the position of the spiral block (712) relative to the spiral channel (604). The rotating sleeve (304) has multiple rectangular through holes arranged in a circumferential array on the top side inside. The rotating sleeve (304) is rotatably connected to the inside of the test chamber (1).

4. The accelerated aging test device for weather resistance of high-voltage signboards according to claim 3, characterized in that, The triggering unit includes: Two first springs (701) are fixedly connected to the inner wall of the rotating sleeve (304) on one side, and a circular through hole is provided on one side of the rotating sleeve (304); The sliding plate (702) is fixedly connected to two first springs (701) on one side, and the sliding plate (702) is slidably connected inside the rotating sleeve (304); The first liquid bladder (703) is installed between two first springs (701), and the two sides of the first liquid bladder (703) are fixedly connected to the inner walls of the sliding plate (702) and the rotating sleeve (304) respectively. The first liquid bladder (703) is connected to the second liquid bladder (707) through the infusion tube. A one-way valve is provided on the infusion tube, and a one-way inlet tube is connected to one side of the first liquid bladder (703). The abutment (704) is fixed at one end to one side of the sliding plate (702), and the other end of the abutment (704) extends into the interior of the rotating sleeve (304). The abutment (704) is slidably connected inside the circular through hole. The annular block (705) is located on the outer periphery of the rotating sleeve (304), and the outer periphery of the annular block (705) is fixedly connected to the inner wall of the test chamber (1); The protrusion (706) is fixed to the inner circumference of the annular block (705) and is used by the annular block (705) to drive the protrusion (706) to rotate and trigger the compression of the pusher (704).

5. The accelerated aging test device for weather resistance of high-voltage signboards according to claim 2, characterized in that, The rotating frame and drive mechanism (3) also include: Multiple connecting brackets (302) are arranged in a circular array on the outer periphery of the connecting sleeve (301) and the rotating sleeve (304), and the two sides of the connecting brackets (302) are fixedly connected to the outer walls of the connecting sleeve (301) and the rotating sleeve (304), respectively. Two card holders (303) are fitted onto the outer periphery of the connecting frame (302); The hollow sleeve (305) is fixedly connected at the bottom to the top of the connecting sleeve (301), and the intermediate cavity inside the hollow sleeve (305) is connected to the air supply cavity (602); The mounting sleeve rotates on the outer periphery of the hollow sleeve (305), and the interior of the mounting sleeve is connected to the intermediate cavity through a sliding sealing ring.

6. The accelerated aging test device for weather resistance of high-voltage signboards according to claim 5, characterized in that, The rotating frame and drive mechanism (3) also include: The first bevel gear (306) is sleeved on the outer circumference of the hollow sleeve (305); The second bevel gear (307) is meshed with the outer periphery of the first bevel gear (306), and a rotating shaft (308) is fixedly connected inside the second bevel gear (307). The drive motor (309) has one end of its output shaft fixedly connected to the rotating shaft (308), and the drive motor (309) is fixedly connected inside the test chamber (1) through a support frame.

7. The accelerated aging test device for weather resistance of high-voltage signboards according to claim 2, characterized in that, The air outlet adjustment assembly (8) includes: A conical block (801) is fixed inside a circular sleeve (601), and the conical block (801) is located inside an air outlet (605). A cavity is provided inside the conical block (801). The connecting cylinder (802) is installed inside the conical block (801), and a first airbag (803) is fixedly connected to one side inside the connecting cylinder (802). The first airbag (803) is connected to an external auxiliary air supply device through a pipe and an outer sealing ring. A circular plate (804) is slidably connected inside the connecting cylinder (802), and one side of the circular plate (804) is fixedly connected to the outer wall of the first airbag (803); The guide rod (806) is slidably connected inside the connecting cylinder (802), and one end of the guide rod (806) is fixedly connected to the circular plate (804), while the other end of the guide rod (806) extends to the outside of the connecting cylinder (802); A trapezoidal block (807) is fixedly connected to one end of a guide rod (806), and the trapezoidal block (807) is slidably connected inside a conical block (801). The trapezoidal block (807) matches the conical surface of the air outlet (605). The third spring (805) is sleeved on the outer periphery of the guide rod (806), and the two sides of the third spring (805) are fixedly connected to the inner wall of the circular plate (804) and the connecting cylinder (802), respectively.

8. The accelerated aging test device for weather resistance of high-voltage signboards according to claim 1, characterized in that, The air conditioning unit (9) includes: The second annular plate (901) is slidably connected inside the rotating sleeve (304). Both sides of the bottom of the second annular plate (901) are connected to screws. The screws are threaded inside the rotating sleeve (304), and the bottom of the screws extends to the outer periphery of the rotating sleeve and is fixedly connected to a handle. Multiple racks (902) are arranged in a circumferential array on the outer periphery of the second annular plate (901); Multiple gears (903) are arranged in a circular array on the outer periphery of the second annular plate (901), and the gears (903) mesh with the rack (902); Multiple connecting shafts (904) are arranged in a circular array on the outer periphery of the second annular plate (901), and the connecting shafts (904) are fixed inside the gear (903).

9. The accelerated aging test device for weather resistance of high-voltage signboards according to claim 8, characterized in that, The air conditioning unit (9) also includes: Multiple adjusting plates (905) are arranged in a circular pattern inside the rectangular through hole, and the adjusting plates (905) are installed on the outer periphery of the connecting shaft (904); Multiple expansion plates (906) are distributed circumferentially between adjustment plates (905). The adjustment plates (905) have an inner cavity. The expansion plates (906) are slidably connected inside the adjustment plates (905). The expansion plates (906) are configured as flexible components.

10. The accelerated aging test device for weather resistance of high-voltage signboards according to claim 1, characterized in that, Also includes: An environmental control unit (4) is installed on one side of the top of the test chamber to regulate the temperature and humidity inside the test chamber; The spray unit (5) is installed at the center of the test chamber and is rotatably connected inside the rotating sleeve (304). Spray pipes are connected to both sides of the top of the spray unit (5). The bottom of the spray unit (5) is connected to the liquid supply unit through the water supply pipe. The top of the spray unit (5) is equipped with a liquid extraction unit, which is connected to an external liquid extraction pump.

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