An insulation product ageing test apparatus

Abstract

The application relates to the technical field of aging test, and particularly discloses an insulating product aging test device which comprises a saltwater tank, a test piece tool unit, an aging test unit, a turbulence bubble-removing unit and a push flow unit. Through vertical impact and circumferential rotation of the turbulence bubble-removing piece in the turbulence bubble-removing unit, micro pressure fluctuation and directional micro-scale vortex are formed around the insulator test piece, the bubble adhesion condition is destroyed, and the complex geometric surface is continuously scoured, so that bubble retention is completely eliminated, the test piece surface is uniformly contacted with the saltwater, and local aging blind area caused by bubble coverage is fundamentally avoided; the push flow unit cooperates with the arc-shaped test tank to form a continuously controllable saltwater dynamic circulation around the test piece in combination with the local fine flow field generated by the turbulence bubble-removing piece. The active turbulence not only strengthens the medium exchange, but also effectively simulates the fluid dynamic action caused by wind and rain in the real outdoor environment, so that the aging test is closer to the actual operation condition.

Description

Technical Field

[0001] This invention relates to the field of aging testing technology, and more specifically, to an aging testing apparatus for insulating products. Background Technology

[0002] In long-term aging tests of insulating products, it is usually necessary to carry out 1,000 to 5,000 hours of accelerated aging under electrical conditions to simulate their actual operating conditions in harsh outdoor environments. The core is to assess their resistance to electrical corrosion and the durability of their electrical insulation performance. Traditional test methods are relatively crude, such as directly placing the test sample on the ground to be rained on and applying high voltage. Although this method can apply electrical stress, it is difficult to accurately, stably and repeatedly simulate comprehensive environmental conditions such as salt spray and wet-dry cycles.

[0003] To improve the simulation and efficiency of tests, existing technologies have developed test devices that use a brine tank combined with an automated turning mechanism, allowing the test specimen to be periodically immersed in and removed from the brine. However, this approach has certain technical drawbacks in practice. Due to the complex umbrella-shaped structure of the test specimen, a large number of air bubbles easily adhere to and remain on its surface during the instant of immersion in brine and subsequent soaking. These air bubbles isolate the brine from the contact between the brine and the insulating material, creating localized blind spots in live-line tests. This severely distorts the electric field distribution and corrosion process, making it impossible for the test results to truly reflect the overall corrosion resistance of the product, thus reducing the accuracy and comparability of the test. Summary of the Invention

[0004] To overcome the above-mentioned technical problems, the present invention proposes an aging test device for insulation products.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] An aging test apparatus for insulation products, comprising:

[0007] brine tank;

[0008] The test piece fixture unit is located above the salt water tank and is used to install the insulator test pieces to be tested for aging.

[0009] An aging test unit, which is set in a brine tank, includes an arc-shaped test tank;

[0010] A turbulence-reducing and defoaming unit is disposed at the bottom of an arc-shaped test tank, including a sleeve communicating with the arc-shaped test tank, and a turbulence-reducing and defoaming component is movably disposed inside the sleeve;

[0011] The propulsion unit is located inside the brine tank and is connected to one side of the arc-shaped test tank.

[0012] As a further aspect of the present invention: the specimen tooling unit includes a flipping frame, and the flipping frame has several sets of tooling seats for installing insulator specimens evenly distributed circumferentially.

[0013] As a further aspect of the present invention: the specimen tooling unit further includes a bracket fixed above the brine tank, a rotating rod rotatably mounted on the bracket, a flipping frame fixedly sleeved on the rotating rod, and a flipping motor for driving the rotating rod is mounted on one side of the bracket.

[0014] As a further aspect of the present invention: the arc-shaped test tank is symmetrically provided with flow channels communicating with the inside of the brine tank on both sides, and a water supply tank is provided outside one side of the flow channel. The water supply tank is connected to the flow propulsion unit through a water pipe.

[0015] As a further aspect of the present invention: the turbulence defoaming component includes a cover cylinder movably embedded in the sleeve, the upper end of the cover cylinder is open, and several turbulence grooves are circumferentially opened on the side wall of the cover cylinder, and a flexible turbulence plate is provided between adjacent turbulence grooves.

[0016] As a further aspect of the present invention: an isolation chamber is provided below the brine tank, and a rotary drive and a lifting drive for driving the turbulence-removing and defoaming components are respectively provided in the isolation chamber.

[0017] As a further embodiment of the present invention: the rotary drive component includes a rotary motor fixedly installed in the isolation cavity, the output end of the rotary motor is connected to a rotating shaft, the turbulence debubbling component is fixed with a sleeve rod that is slidably sleeved outside the rotating shaft, the inner wall of the sleeve rod is provided with a plurality of axial limiting slide bars, and the outer circumferential surface of the rotating shaft is provided with a plurality of slide grooves that are slidably adapted to the axial limiting slide bars.

[0018] As a further aspect of the present invention: the lifting drive component includes a lifting cylinder fixedly installed in the isolation cavity, and a push-pull ring is installed at the extended end of the lifting cylinder, the push-pull ring being rotatably sleeved on the sleeve rod.

[0019] As a further embodiment of the present invention: the propulsion unit includes a water storage cylinder fixed in a brine tank, a piston disc slidably embedded in the water storage cylinder, the piston disc dividing the water storage cylinder into an inlet chamber and an outlet chamber, the outlet chamber being connected to a water pipe, an inlet hole communicating with the inlet chamber being opened at the end of the water storage cylinder away from the water pipe, and a connecting hole communicating with the inlet chamber and the outlet chamber being opened on the piston disc.

[0020] As a further aspect of the present invention: a flow-pushing cylinder is installed on the side of the water storage cylinder near the water inlet chamber, and a telescopic rod fixedly connected to the piston disc is provided at the extended end of the flow-pushing cylinder; a filter screen is provided at the opening of the connecting hole near the water inlet chamber; a first one-way valve plate is installed in the water inlet hole, and a second one-way valve plate is installed in the connecting hole.

[0021] The beneficial effects of this invention are:

[0022] This invention uses the vertical impact and circumferential rotation of the defoaming component in the defoaming unit to form micro-pressure fluctuations and directional micro-scale eddies around the insulator specimen, directly destroying the conditions for bubble adhesion and continuously scouring its complex geometric surface, thereby completely eliminating bubble retention and ensuring that the specimen surface is in complete and uniform contact with the salt water, fundamentally avoiding local aging blind spots caused by bubble coverage.

[0023] The flow-pushing unit works in conjunction with the arc-shaped test tank, and combined with the local fine flow field generated by the turbulence-debubbling device, a continuous and controllable dynamic circulation of brine is formed around the specimen. This active turbulence not only enhances the exchange of media, but also effectively simulates the fluid dynamics caused by wind and rain in the real outdoor environment, making the aging test closer to the actual operating conditions.

[0024] By eliminating bubble interference and optimizing the flow field distribution, the uniformity of the aging process in different areas of the same specimen and between different specimens is ensured. It is especially suitable for insulators with complex skirt structures, ensuring the consistency of salt spray penetration and corrosion processes, greatly improving the repeatability and comparability of test data, and providing a reliable basis for the durability evaluation of insulation materials and structures. Attached Figure Description

[0025] The invention will now be further described with reference to the accompanying drawings.

[0026] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0027] Figure 2 This is a three-dimensional schematic diagram from another perspective of the present invention;

[0028] Figure 3 This is a schematic diagram of the structure of the test piece tooling unit in this invention;

[0029] Figure 4 This is a schematic diagram of the internal structure of the brine tank in this invention;

[0030] Figure 5 This is a schematic diagram of the aging test unit and the turbulence defoaming unit in this invention;

[0031] Figure 6 This is a cross-sectional view of the turbulence defoaming unit in this invention;

[0032] Figure 7 This is a cross-sectional view of the jet propulsion unit in this invention;

[0033] Figure 8 This is a cross-sectional view of the propulsion unit in this invention from another perspective.

[0034] In the picture:

[0035] 100. Brine tank; 110. Isolation chamber;

[0036] 200. Specimen fixture unit; 210. Tilting frame; 220. Fixture base; 230. Support; 240. Rotating rod; 250. Tilting motor;

[0037] 300. Aging test unit; 310. Arc-shaped test tank; 320. Flow channel; 330. Water supply tank; 340. Water pipe;

[0038] 400. Turbulence and defoaming unit; 410. Sleeve; 420. Turbulence and defoaming component; 421. Cover; 422. Turbulence groove; 423. Flexible spoiler; 430. Rotary drive component; 431. Rotary motor; 432. Rotating shaft; 433. Sleeve rod; 434. Axial limiting slide bar; 440. Lifting drive component; 441. Lifting cylinder; 442. Push-pull ring;

[0039] 500, Flow propulsion unit; 510, Water storage tank; 511, Water inlet chamber; 512, Water outlet chamber; 513, Water inlet hole; 520, Piston disc; 521, Connecting hole; 530, Flow propulsion cylinder; 540, Telescopic rod; 550, Filter screen; 560, First one-way valve plate; 570, Second one-way valve plate;

[0040] 600. Insulator test specimen. Detailed Implementation

[0041] The subject matter described herein will now be discussed with reference to exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the subject matter described herein, and changes may be made to the function and arrangement of the elements discussed without departing from the scope of this specification. Various processes or components may be omitted, substituted, or added as needed in the examples. Furthermore, features described in some examples may be combined in other examples.

[0042] Please see Figure 1 and Figure 2 The present invention discloses an aging test device for insulating products, including a salt water tank 100, a specimen tooling unit 200, an aging test unit 300, a turbulence defoaming unit 400, and a flow propulsion unit 500.

[0043] Please see Figure 3 The test piece tooling unit 200 is disposed above the salt water tank 100 and is used to install the insulator test piece 600 to be tested for aging.

[0044] Please see Figure 4 and Figure 5The aging test unit 300 is disposed within the brine tank 100 and includes an arc-shaped test tank 310; the turbulence-removing and defoaming unit 400 is disposed at the bottom of the arc-shaped test tank 310 and includes a sleeve 410 communicating with the arc-shaped test tank 310, wherein a turbulence-removing and defoaming component 420 is movably disposed within the sleeve 410; the flow-pushing unit 500 is disposed within the brine tank 100 and communicates with one side of the arc-shaped test tank 310.

[0045] Specifically, several insulator test pieces 600 are installed and fixed on the test piece fixture unit 200. When one group of insulator test pieces 600 rotates into the arc-shaped test groove 310 and is immersed in the salt water in the arc-shaped test groove 310, the insulator test piece 600 is located in the center of the arc-shaped test groove 310 and is in a vertical position. Then, the turbulence-debubbling device 420 extends vertically upward from the sleeve 410. The turbulence-debubbling device 420 generates a vertical impact on the salt water around the insulator test piece 600. The micro-pressure fluctuation penetrates the complex geometric surface of the insulator test piece 600, destroying the contact angle between the bubbles and the surface of the insulator test piece 600, causing them to dissipate from the salt water. The air bubbles are transformed from a suspended state to a free state, allowing them to float and detach, ensuring that the insulator specimen 600 is completely submerged in the brine. Subsequently, the turbulence-removing defoamer 420 rotates circumferentially relative to the insulator specimen 600, thereby creating a turbulence effect on the brine around the insulator specimen 600 and generating directional micro-scale eddies. These eddies directly scour the complex surface of the insulator specimen 600, forming a continuous shear force that peels off the attached air bubbles and prevents them from re-attaching. At the same time, the turbulence-removing defoamer 420 generates a local fine flow field around the insulator specimen 600, promoting dynamic circulation of the brine and improving the consistency of the aging test results in different areas of the insulator specimen 600.

[0046] It should be noted that the present invention uses the vertical impact and circumferential rotation of the turbulence defoaming component 420 in the turbulence defoaming unit 400 to form micro-pressure fluctuations and directional micro-scale eddies around the insulator specimen 600, directly destroying the conditions for bubble adhesion and continuously scouring its complex geometric surface, thereby completely eliminating bubble retention and ensuring that the specimen surface is in complete and uniform contact with salt water, fundamentally avoiding local aging blind spots caused by bubble coverage;

[0047] The flow-driving unit 500 works in conjunction with the arc-shaped test tank 310, and combined with the local fine flow field generated by the turbulence-debubbling component 420, a continuous and controllable dynamic circulation of brine is formed around the specimen. This active turbulence not only enhances the exchange of media, but also effectively simulates the fluid dynamics caused by wind and rain in the real outdoor environment, making the aging test closer to the actual operating conditions.

[0048] By eliminating bubble interference and optimizing the flow field distribution, the uniformity of the aging process in different areas of the same specimen and between different specimens is ensured. It is especially suitable for insulators with complex skirt structures, ensuring the consistency of salt spray penetration and corrosion processes, greatly improving the repeatability and comparability of test data, and providing a reliable basis for the durability evaluation of insulation materials and structures.

[0049] In one embodiment, please refer to Figure 3 The test piece tooling unit 200 includes a flipping frame 210, and the flipping frame 210 has several sets of tooling seats 220 for installing insulator test pieces 600 evenly distributed in the circumferential direction.

[0050] Furthermore, the specimen tooling unit 200 also includes a bracket 230 fixed above the saline tank 100, a rotating rod 240 rotatably mounted on the bracket 230, a flipping frame 210 fixedly sleeved on the rotating rod 240, and a flipping motor 250 for driving the rotating rod 240 is mounted on one side of the bracket 230.

[0051] Specifically, insulator test pieces 600 are fixedly installed at the ends of corresponding fixture seats 220. The rotating rod 240 is driven to rotate by the flipping motor 250, which in turn drives the flipping frame 210 and fixture seats 220 to flip. This allows multiple sets of insulator test pieces 600 to be periodically flipped and immersed in salt water, and the insulator test pieces 600 to be energized for aging tests. In practical applications, four sets of fixture seats 220 are set on each set of flipping frame 210. The flipping frame 210 is rotated 90° every 15 seconds, so that each set of insulator test pieces 600 is periodically immersed in salt water for a period of time before being removed.

[0052] It is worth noting that by driving the rotating rod 240 through the flipping motor 250 to rotate the flipping frame 210 periodically, the insulator specimen 600 is regularly immersed in and removed from the salt water at a set rhythm (such as flipping 90° every 15 seconds), simulating the alternating working conditions of outdoor insulators being rained on and exposed to the sun. Compared with static immersion, this dynamic immersion mode can accelerate and realistically reflect the aging process of insulation materials under the action of humid and dry cycles, and improve the realism of the test environment simulation.

[0053] Furthermore, please refer to Figure 5 The arc-shaped test tank 310 has symmetrical flow channels 320 on both sides that communicate with the inside of the brine tank 100. A water supply tank 330 is provided outside one flow channel 320. The water supply tank 330 is connected to the push flow unit 500 through a water pipe 340.

[0054] Specifically, after the insulator specimen 600 is immersed in the salt water in the arc-shaped test tank 310, while the defoaming and turbulence-removing device 420 rotates circumferentially to remove bubbles, the salt water in the salt water tank 100 is periodically introduced into the water supply chamber 330 through the water pipe 340 by the flow-pushing unit 500. Then, the salt water enters the arc-shaped test tank 310 from the flow channel 320 on one side of the water supply chamber 330. After that, the water flow sweeps horizontally across the insulator specimen 600 and then flows back into the salt water tank 100 from the flow channel 320 on the opposite side. This process is repeated to achieve the periodic directional flow effect of the salt water in the arc-shaped test tank 310, promoting the full dynamic integration of the salt water with the complex surface of the insulator specimen 600.

[0055] It should be noted that the flow-pushing unit 500 periodically pumps brine into the water supply tank 330 through the water pipe 340. The water then flows horizontally through the arc-shaped test tank 310 via the flow channel 320 on one side, sweeps over the insulator specimen 600, and flows out from the flow channel 320 on the other side. This creates a stable horizontal scouring force around the specimen, effectively preventing brine stagnation and ensuring sufficient circulation and uniform composition of the brine in the test tank. This allows all surface areas of the insulator specimen 600 to come into contact with a newer, uniformly concentrated corrosive medium, greatly improving the uniformity of the aging reaction.

[0056] The horizontal flow and the local fine eddies generated by the turbulence debubbling component 420 form a multi-scale, multi-directional flow field synergy. The macroscopic horizontal flow is responsible for the overall medium renewal and scouring, while the microscopic eddies focus on the peeling off of bubbles on complex surfaces and the suppression of their re-attachment, thereby forming a dynamic, stable and bubble-free ideal liquid-solid contact interface on the complex geometric surface of the insulator specimen 600.

[0057] By adopting a periodic rather than continuous flow pattern, the intermittent and pulsating characteristics of fluid loads such as wind and rain in the natural environment are simulated. This dynamically changing fluid environment can more realistically reflect the stress conditions that insulators are subjected to in actual operation, and may induce aging mechanisms and failure modes that are closer to reality, making the results of accelerated aging tests more valuable for engineering reference.

[0058] In yet another embodiment, please refer to Figure 5 and Figure 6 The turbulence debubbling component 420 includes a cover 421 movably embedded in the sleeve 410. The upper end of the cover 421 is open, and several turbulence grooves 422 are circumferentially opened on the side wall of the cover 421. A flexible turbulence plate 423 is provided between adjacent turbulence grooves 422.

[0059] Specifically, when the cover 421 is pushed upward, the corresponding insulator specimen 600 passes through the upper opening of the cover 421 and enters the cover 421. The relative movement between the cover 421 and the insulator specimen 600 impacts the brine around the insulator specimen 600, thereby removing air bubbles attached to the surface of the insulator specimen 600. Subsequently, the cover 421 rotates circumferentially relative to the insulator specimen 600, and the brine around the insulator specimen 600 enters and exits the cover 421 through each turbulence groove 422. At the same time, the flexible turbulence plate 423 disturbs the brine around the insulator specimen 600, promoting the elimination of air bubbles and the uniform distribution of brine.

[0060] It should be noted that the upward ejection of the cover 421 forms a local cavity surrounding the insulator specimen 600. The vertical impact generated by its relative motion is constrained within the cavity, which can forcefully penetrate the complex surface of the specimen, directly disrupt the bubble adhesion balance, and quickly achieve macroscopic peeling of the initial bubbles.

[0061] When the cover 421 rotates circumferentially, the turbulence grooves 422 opened on its side wall form an orderly channel for the brine to flow in and out, guiding the fluid to form a regular lateral circulation; at the same time, the flexible turbulence plates 423 between adjacent turbulence grooves 422 produce flexible deformation and oscillation under the action of the fluid, generating a continuous, gentle and non-rigid disturbance to the brine around the insulator specimen 600 that fits the surface. The combination of rigid orderly flow guidance and flexible adaptive disturbance can avoid water flow blind spots and prevent excessive impact on fragile specimens or the flow field that has been formed.

[0062] The flexible baffle 423 can adapt to the irregular contour of the insulator test piece 600 skirt, ensuring that the disturbance can reach complex areas such as grooves and corners where air bubbles are easily trapped. Combined with the circumferential sweeping effect brought about by the rotation of the cover 421, a continuously renewed and highly uniform microscale turbulent layer can be formed on the test piece surface, effectively preventing the re-attachment of air bubbles after peeling, and ensuring that salt ions are in full contact with the test piece surface, thereby improving the uniformity and thoroughness of the aging reaction.

[0063] Further, please refer to Figure 5 Below the brine tank 100, there is an isolation chamber 110, and the isolation chamber 110 is respectively provided with a rotary drive 430 and a lifting drive 440 for driving the turbulence defoaming component 420.

[0064] Specifically, please refer to Figure 5 and Figure 6The rotary drive component 430 includes a rotary motor 431 fixedly installed in the isolation cavity 110. The output end of the rotary motor 431 is connected to a rotating shaft 432. The turbulence debubbling component 420 has a sleeve rod 433 fixedly slidably sleeved outside the rotating shaft 432. The inner wall of the sleeve rod 433 is provided with a plurality of axial limiting slide strips 434. The outer circumferential surface of the rotating shaft 432 is provided with a plurality of slide grooves that are slidably adapted to the axial limiting slide strips 434.

[0065] The lifting drive component 440 includes a lifting cylinder 441 fixedly installed in the isolation chamber 110. A push-pull ring 442 is installed at the extended end of the lifting cylinder 441, and the push-pull ring 442 is rotatably sleeved on the sleeve rod 433.

[0066] Among them, the rotating shaft 432 and the sleeve rod 433 can only slide relative to each other axially and cannot rotate relative to each other circumferentially; the push-pull ring 442 and the sleeve rod 433 can only rotate relative to each other circumferentially and cannot slide relative to each other axially; when a set of insulator test pieces 600 are flipped into the arc-shaped test groove 310, the lifting cylinder 441 drives the push-pull ring 442 to rise, thereby using the push-pull ring 442 to drive the sleeve rod 433 and the turbulence de-bubbling component 420 to move upward and push out as a whole, and the sleeve rod 433 and the rotating shaft 432 undergo axial relative displacement; then the rotary motor 431 drives the rotating shaft 432 to rotate, thereby driving the sleeve rod 433 and the turbulence de-bubbling component 420 to rotate as a whole.

[0067] It is worth noting that the cooperation between the axial limiting slide bar 434 and the slide groove ensures that the rotating shaft 432 and the sleeve rod 433 can slide freely in the axial direction, but the circumferential torque is fully transmitted. At the same time, the push-pull ring 442 and the sleeve rod 433 allow relative circumferential rotation, but the axial displacement is driven synchronously, so that the pure linear motion driven by the lifting cylinder 441 and the pure rotational motion driven by the rotary motor 431 can be independently superimposed on the turbulence debubbling component 420, and the two motions do not interfere with each other.

[0068] The rotary drive component 430 and the lifting drive component 440 are both installed in the isolation chamber 110 below the brine tank 100, which physically isolates them from the corrosive brine environment, fundamentally avoiding problems such as salt spray corrosion and crystallization-induced mechanical jamming and damage.

[0069] The independence and precision of the drive mechanism enable precise control of the ejection height, rotation speed, and operation cycle of the defoaming and turbulence-reducing component 420. This ensures that the defoaming and turbulence conditions experienced by each insulator specimen 600 during immersion are completely consistent, thereby guaranteeing highly repeatable and comparable test data.

[0070] In further embodiments, please refer to Figure 7 and Figure 8The propulsion unit 500 includes a water storage cylinder 510 fixed in the brine tank 100. A piston disc 520 is slidably embedded in the water storage cylinder 510. The piston disc 520 divides the water storage cylinder 510 into an inlet chamber 511 and an outlet chamber 512. The outlet chamber 512 is connected to a water pipe 340. An inlet hole 513 communicating with the inlet chamber 511 is opened at one end of the water storage cylinder 510 away from the water pipe 340. A connecting hole 521 communicating with the inlet chamber 511 and the outlet chamber 512 is opened on the piston disc 520.

[0071] Furthermore, a flow-pushing cylinder 530 is installed on the side of the water storage cylinder 510 near the water inlet chamber 511. The extended end of the flow-pushing cylinder 530 is provided with a telescopic rod 540 fixedly connected to the piston disc 520. A filter screen 550 is provided on the opening side of the connecting hole 521 near the water inlet chamber 511. A first one-way valve plate 560 is installed in the water inlet hole 513, and a second one-way valve plate 570 is installed in the connecting hole 521.

[0072] Specifically, when the push cylinder 530 pushes the piston disc 520 toward one end of the water pipe 340 via the telescopic rod 540, the first one-way valve 560 opens and the second one-way valve 570 closes, thereby enabling the brine in the brine tank 100 to be sucked into the inlet chamber 511 through the inlet hole 513, and at the same time, the brine in the outlet chamber 512 to be pushed into the arc-shaped test tank 310 through the water pipe 340.

[0073] When the thrust cylinder 530 pulls the piston disc 520 toward one end of the thrust cylinder 530 via the telescopic rod 540, the first one-way valve 560 closes and the second one-way valve 570 opens, thereby transferring the brine in the inlet chamber 511 to the outlet chamber 512 through the connecting hole 521. During the brine transfer process, the filter screen 550 can filter impurities in the brine in the inlet chamber 511, thereby improving the cleanliness of the brine entering the outlet chamber 512 and preventing impurities in the brine from interfering with the aging test of the insulator specimen 600 in the arc-shaped test tank 310. Through the reciprocating movement of the piston disc 520, the periodic thrust and purification of the brine can be carried out simultaneously.

[0074] It should be noted that by driving the piston disc 520 with the single reciprocating motion of the thrust cylinder 530, the three functions of drawing in fresh brine, pushing out the driving water flow, and filtering and purifying the medium can be completed simultaneously.

[0075] During the process of piston disc 520 being pulled back and brine being transferred from inlet chamber 511 to outlet chamber 512 through connecting hole 521, filter screen 550 will forcibly filter the brine flowing through it, effectively intercepting particulate impurities or precipitates that may be generated during the test, ensuring that the brine injected into arc-shaped test tank 310 is always clean, fundamentally avoiding impurities adhering to the surface of insulator specimen 600 and interfering with the electrochemical corrosion process or causing local arcs, thus ensuring a pure environment and accurate results for the aging test;

[0076] Through precise control of the flow-pushing cylinder 530, the reciprocating motion of the piston disc 520 can generate a periodic flow with highly stable flow rate and frequency. This pulsating flow not only effectively promotes the overall exchange and compositional uniformity of the brine in the arc-shaped test tank 310, but its controllable pulsation characteristics can also simulate fluid fluctuations in the real environment, enhancing the realism of the environmental simulation. Furthermore, the flow field parameters (pulsation amplitude and frequency) are adjustable, expanding the dimensions of experimental research.

[0077] The specific embodiments of the present invention have been described above. However, the present invention is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present invention, all of which are within the protection scope of the present invention.

Claims

1. An aging test device for insulating products, characterized in that, include: Brine tank (100); The test piece fixture unit (200) is located above the salt water tank (100) and is used to install the insulator test piece (600) to be tested for aging. An aging test unit (300) is set in a brine tank (100) and includes an arc-shaped test tank (310). A turbulence-removing and defoaming unit (400) is disposed at the bottom of an arc-shaped test tank (310) and includes a sleeve (410) communicating with the arc-shaped test tank (310). A turbulence-removing and defoaming component (420) is movably disposed inside the sleeve (410). A flow propulsion unit (500) is disposed in a brine tank (100) and connected to one side of an arc-shaped test tank (310); Below the brine tank (100) is an isolation chamber (110), and the isolation chamber (110) is respectively provided with a rotary drive (430) and a lifting drive (440) for driving the turbulence defoaming component (420). The rotary drive component (430) includes a rotary motor (431) fixedly installed in the isolation cavity (110). The output end of the rotary motor (431) is connected to a rotating shaft (432). The turbulence debubbling component (420) has a sleeve rod (433) fixedly slidably sleeved outside the rotating shaft (432). The inner wall of the sleeve rod (433) is provided with a plurality of axial limiting slide strips (434). The outer circumferential surface of the rotating shaft (432) is provided with a plurality of sliding grooves that are slidably adapted to the axial limiting slide strips (434). The lifting drive component (440) includes a lifting cylinder (441) fixedly installed in the isolation chamber (110). A push-pull ring (442) is installed at the extended end of the lifting cylinder (441), and the push-pull ring (442) is rotatably sleeved on the sleeve rod (433).

2. The aging test device for insulating products according to claim 1, characterized in that, The test piece tooling unit (200) includes a flipping frame (210), on which several sets of tooling seats (220) for installing insulator test pieces (600) are evenly distributed in the circumferential direction.

3. The aging test device for insulating products according to claim 2, characterized in that, The specimen tooling unit (200) also includes a bracket (230) fixed above the brine tank (100), a rotating rod (240) is rotatably mounted on the bracket (230), a flipping frame (210) is fixedly sleeved on the rotating rod (240), and a flipping motor (250) for driving the rotating rod (240) is installed on one side of the bracket (230).

4. The aging test device for insulating products according to claim 1, characterized in that, The arc-shaped test tank (310) has symmetrically opened flow channels (320) on both sides that communicate with the inside of the brine tank (100). A water supply tank (330) is set outside one flow channel (320), and the water supply tank (330) is connected to the flow propulsion unit (500) through a water pipe (340).

5. The aging test device for insulating products according to claim 1, characterized in that, The de-bubbling component (420) includes a cover (421) movably embedded in the sleeve (410), the upper end of the cover (421) is open, and several turbulence grooves (422) are circumferentially opened on the side wall of the cover (421), and a flexible turbulence plate (423) is provided between adjacent turbulence grooves (422).

6. The aging test apparatus for insulating products according to claim 4, characterized in that, The propulsion unit (500) includes a water storage cylinder (510) fixed in a brine tank (100). A piston disc (520) is slidably embedded in the water storage cylinder (510). The piston disc (520) divides the water storage cylinder (510) into an inlet chamber (511) and an outlet chamber (512). The outlet chamber (512) is connected to a water pipe (340). An inlet hole (513) connected to the inlet chamber (511) is opened at one end of the water storage cylinder (510) away from the water pipe (340). A connecting hole (521) connecting the inlet chamber (511) and the outlet chamber (512) is opened on the piston disc (520).

7. The aging test apparatus for insulating products according to claim 6, characterized in that, A flow-pushing cylinder (530) is installed on the side of the water storage cylinder (510) near the water inlet chamber (511). The extended end of the flow-pushing cylinder (530) is provided with a telescopic rod (540) that is fixedly connected to the piston disc (520). A filter screen (550) is provided on the side of the connecting hole (521) near the water inlet chamber (511). A first one-way valve plate (560) is installed in the water inlet hole (513), and a second one-way valve plate (570) is installed in the connecting hole (521).

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