Insulator thermal shock and temperature cycle test device

Abstract

The utility model provides an insulator thermal shock and temperature cycle test device which comprises a rack, and a drying oven, a cold water tank and a hot water tank are installed on the rack. A hanging basket is installed on the top of the rack through a moving module, and the moving module is used for driving the hanging basket to move to the drying oven or the cold water tank or the hot water tank. According to the utility model, the movable module drives the hanging basket equipped with a plurality of insulators to be tested to move to the drying oven, the cold water tank and the hot water tank respectively, so that a thermal shock test can be carried out in the drying oven and the cold water tank, and a temperature cycle test can also be carried out in the cold water tank and the hot water tank; the two tests do not need to be carried out separately on two sets of independent test equipment, so that the test efficiency is greatly improved.

Description

Technical Field

[0001] This utility model relates to the technical field of insulator testing equipment, and in particular to an insulator thermal shock and temperature cycling testing device. Background Technology

[0002] Insulators are generally made of glass or porcelain and are mainly used to fix conductors to poles and other objects, and to insulate the conductors from the poles. Insulators are one of the key components of high-voltage transmission lines, and their performance directly affects the operational safety of the entire transmission line.

[0003] There are numerous insulator manufacturers in China, and their product quality control systems vary, resulting in inconsistent insulator quality. Therefore, it is necessary to inspect the manufactured insulators to prevent operational accidents due to quality issues. In some regions, the temperature difference between day and night is significant. During the day, the surface temperature of the insulators is very high due to the sun's intense heat, while at night the temperature drops sharply. Under such conditions, insulators, especially tempered glass insulators, are prone to spontaneous explosion. To prevent such incidents, it is necessary to artificially simulate this environment to inspect the insulation.

[0004] Thermal shock testing and temperature cycling testing are commonly used test methods for insulator performance testing. However, when inspecting insulators, the thermal shock testing equipment and temperature cycling testing equipment are two independent sets of equipment, so the two tests need to be carried out separately, resulting in low testing efficiency. Utility Model Content

[0005] This invention proposes an insulator thermal shock and temperature cycling test device, which solves the problems of low test efficiency caused by the need to conduct insulator thermal shock and temperature cycling tests separately in the prior art.

[0006] The technical solution of this utility model is implemented as follows:

[0007] This utility model provides an insulator thermal shock and temperature cycling test device, including a frame on which an oven, a cold water tank and a hot water tank are installed; a basket is installed on the top of the frame via a moving module, which is used to drive the basket to move to the oven, the cold water tank or the hot water tank.

[0008] This invention uses a mobile module to drive a basket containing several insulators to be tested to move to an oven, a cold water tank, and a hot water tank respectively. This allows for thermal shock testing in the oven and cold water tank, as well as temperature cycling testing in the cold water tank and hot water tank. The two tests do not need to be carried out on two separate sets of testing equipment, which greatly improves the testing efficiency.

[0009] Specifically, the mobile module includes a horizontal moving mechanism and a lifting mechanism. The lifting mechanism is installed on the horizontal moving mechanism, and the basket is installed on the lifting mechanism. The lifting mechanism drives the basket to rise and fall, and the horizontal moving mechanism drives the lifting mechanism and the basket to move horizontally together, thereby driving the basket to move to the oven, cold water tank or hot water tank.

[0010] Specifically, the horizontal moving mechanism includes two horizontal slide rails arranged parallel to each other on the top of the frame, and a slide table is slidably mounted on the slide rails via a slider; a rack is provided on the frame along the length of the slide rails, and a first driving component is mounted on the slide table. The output shaft of the first driving component is equipped with a gear that meshes with the rack, and the slide table is driven to slide along the slide rails by the first driving component; the drying oven, cold water tank, and hot water tank are arranged along the length of the slide rails, and the gear is driven to rotate by the first driving component. The engagement of the gear and the rack causes the slide table to move linearly along the slide rails, thereby moving the position of the basket.

[0011] Furthermore, the lifting mechanism includes a second drive component, a transmission shaft, a steering gear, and a screw jack installed on the top surface of the slide table. The bottom of the screw of the screw jack is connected to the suspended basket. There are four screw jacks, which are respectively installed at the four corners of the slide table. The four screw jacks are connected to the second drive component through multiple steering gears and transmission shafts. Through the cooperation of the second drive component, the transmission shaft, and the steering gear, the four screw jacks are driven to operate synchronously, thereby driving the four screws to lift and lower synchronously, smoothly driving the suspended basket to lift and lower, and realizing the entry and exit of the suspended basket into the cold water tank and the hot water tank.

[0012] Specifically, the frame is equipped with a support, the oven is mounted on the support, the side of the oven has a door for the basket to enter and exit, and the top of the oven has a clearance groove along the length of the slide rail to allow the lead screw to pass through. The slide table is driven by a horizontal moving mechanism to move closer to the oven, directly moving the basket into the oven. The clearance groove on the top of the oven allows the lead screw to pass through.

[0013] Furthermore, the cabinet door is hinged to the oven, and an electrically controlled telescopic rod is installed on the bracket. The two ends of the electrically controlled telescopic rod are respectively hinged to the cabinet door and the bracket. The electrically controlled telescopic rod is used to drive the cabinet door to open and close. By driving the cabinet door to open and close through the electrically controlled telescopic rod, the automatic opening and closing of the cabinet door is realized.

[0014] Specifically, the frame is equipped with loading and unloading stations for placing the insulators to be tested into the basket or taking out the tested insulators from the basket, which facilitates the loading and unloading of the insulators.

[0015] Specifically, the cold water tank and the hot water tank are adjacent to each other, and the top surfaces of the cold water tank and the hot water tank are provided with tracks. A tank cover is slidably connected to the tracks, and the tank cover can be switched back and forth between the top surfaces of the cold water tank and the hot water tank by sliding the tank cover. On the one hand, when the hot water tank is not in use, the tank cover can be slid to the top of the hot water tank to reduce heat loss from the hot water tank and save energy. On the other hand, the tank cover can be switched back and forth between the top surfaces of the hot water tank and the cold water tank without taking up space or having to be removed, making it more convenient to use.

[0016] Furthermore, the cold water tank, hot water tank, or tank cover is provided with a third driving component, which is used to drive the tank cover to slide on the track. The third driving component drives the tank cover to switch back and forth between the top of the cold water tank and the hot water tank, which improves the automation level of the test device and reduces the intensity of manual labor. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of an insulator thermal shock and temperature cycling test device according to the present invention;

[0019] Figure 2 This is a front view of an insulator thermal shock and temperature cycling test device according to the present invention;

[0020] Figure 3 This is a top view of an insulator thermal shock and temperature cycling test device according to the present invention;

[0021] Figure 4 This is a schematic diagram of the lifting mechanism in an embodiment of the present utility model;

[0022] In the diagram: 1. Frame; 2. Oven; 3. Cold water tank; 4. Hot water tank; 5. Hanging basket; 6. Slide rail; 7. Slide table; 8. Rack; 9. First drive unit; 10. Second drive unit; 11. Drive shaft; 12. Steering gear; 13. Screw jack; 14. Screw; 15. Bracket; 16. Box door; 17. Clearance groove; 18. Electrically controlled telescopic rod; 19. Loading and unloading station; 20. Box cover. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Reference Figure 1 This utility model provides an insulator thermal shock and temperature cycling test device, including a frame 1 (the frame 1 can be a high-strength stainless steel welded frame), an oven 2, a cold water tank 3 and a hot water tank 4 are installed on the frame 1; a basket 5 is installed on the top of the frame 1 through a moving module, and the moving module is used to drive the basket 5 to move to the oven 2, the cold water tank 3 or the hot water tank 4.

[0025] This invention uses a mobile module to drive a basket 5 containing several insulators to be tested to move to an oven 2, a cold water tank 3, and a hot water tank 4 respectively. This allows for thermal shock testing in the oven 2 and the cold water tank 3, as well as temperature cycling testing in the cold water tank 3 and the hot water tank 4. The two tests do not need to be carried out on two separate sets of testing equipment, which greatly improves the testing efficiency.

[0026] Specifically, the moving module includes a horizontal moving mechanism and a lifting mechanism. The lifting mechanism is installed on the horizontal moving mechanism, and the basket 5 is installed on the lifting mechanism. The lifting mechanism drives the basket 5 to rise and fall, and the horizontal moving mechanism drives the lifting mechanism and the basket 5 to move horizontally together, thereby driving the basket 5 to move to the oven 2, the cold water tank 3, or the hot water tank 4.

[0027] Specifically, the horizontal moving mechanism includes two horizontal slide rails 6 arranged parallel to each other on the top of the frame 1. A slide table 7 is slidably mounted on the slide rails 6 via a slider. A rack 8 is provided on the frame 1 along the length of the slide rails 6. A first driving component 9 is mounted on the slide table 7. The output shaft of the first driving component 9 is equipped with a gear that meshes with the rack 8. The first driving component 9 drives the slide table 7 to slide along the slide rails 6. The drying oven 2, cold water tank 3, and hot water tank 4 are arranged along the length of the slide rails 6. The first driving component 9 drives the gear to rotate. Through the cooperation of the gear and the rack 8, the slide table 7 is linearly displaced along the slide rails 6, thereby moving the position of the basket 5.

[0028] Furthermore, the lifting mechanism includes a second drive component 10, a transmission shaft 11, a steering gear 12, and a screw jack 13 installed on the top surface of the slide table 7. The bottom of the screw jack 14 is connected to the suspended basket 5. There are four screw jacks 13, which are symmetrically installed at the four corners of the slide table 7. The four screw jacks 13 are connected to the second drive component 10 through multiple steering gears 12 and transmission shafts 11. Through the cooperation of the second drive component 10, transmission shafts 11, and steering gears 12, the four screw jacks 13 are driven to run synchronously, thereby driving the four screws 14 to lift synchronously, smoothly lifting the suspended basket 5, and realizing the entry and exit of the suspended basket 5 into the cold water tank 3 and the hot water tank 4.

[0029] In this embodiment, the lifting mechanism can directly adopt an existing screw lifting platform, such as the screw lifting platform with model number SJASJB.

[0030] In this embodiment, both the first driving component 9 and the second driving component 10 are combinations of motors and reducers. In specific implementation, other high-torque driving components may also be used.

[0031] Specifically, the frame 1 is provided with a support 15, the oven 2 is mounted on the support 15, the side of the oven 2 is provided with a door 16 for the basket 5 to enter and exit, and the top of the oven 2 is provided with a clearance groove 17 along the length of the slide rail 6 to allow the lead screw 14 to pass. The slide table 7 is driven to move in the direction close to the oven 2 by a horizontal moving mechanism, and the basket 5 is moved directly into the oven 2. The clearance groove 17 on the top of the oven 2 allows the lead screw 14 to pass through.

[0032] In this embodiment, the oven 2 has dimensions of 2m × 1.5m × 2m (the dimensions can be flexibly adjusted according to actual conditions). The inner wall adopts a double-layer stainless steel sandwich structure and is filled with ceramic fiber insulation cotton (100mm thick). The heating element is a nickel-chromium alloy electric heating tube. The door frame of the oven door 16 is embedded with a silicone sealing strip, and the clearance groove 17 is covered with a high-temperature resistant silicone baffle to prevent heat loss.

[0033] Cold water tank 3 has a volume of 2m³. 3 (Dimensions can be flexibly adjusted according to actual needs), with a built-in semiconductor cooling module (the hot end of the semiconductor cooling module is located outside the cold water tank 3, and the cold end is placed inside the cold water tank 3), and the water temperature control range is 0℃~25℃; the hot water tank 4 has a volume of 2m³. 3 (Dimensions can be adjusted flexibly according to actual conditions), built-in electric heating element, water temperature control range is 25℃~95℃. Both tanks are 304 stainless steel welded structure, covered with polyurethane foam insulation layer (thickness 50mm).

[0034] Furthermore, the door 16 is hinged to the oven 2, and an electrically controlled telescopic rod 18 is installed on the bracket 15. The two ends of the electrically controlled telescopic rod 18 are respectively hinged to the door 16 and the bracket 15. The electrically controlled telescopic rod 18 is used to drive the door 16 to open and close. The automatic opening and closing of the door 16 is realized by driving the door 16 to open and close through the electrically controlled telescopic rod 18.

[0035] Specifically, the frame 1 is provided with a loading and unloading station 19, which is used to put the insulator to be tested into the basket 5 or take out the tested insulator from the basket 5, so as to facilitate the loading and unloading of the insulator.

[0036] Specifically, the cold water tank 3 and the hot water tank 4 are adjacent to each other, and the top surfaces of the cold water tank 3 and the hot water tank 4 are provided with tracks. A tank cover 20 is slidably connected to the tracks. By sliding the tank cover 20, the tank cover 20 can be switched back and forth on the top surfaces of the cold water tank 3 and the hot water tank 4. On the one hand, when the hot water tank 4 is not in use, the tank cover 20 can be slid to the top of the hot water tank 4 to reduce heat loss from the hot water tank 4 and save energy. On the other hand, the tank cover 20 can be switched back and forth on the top surfaces of the hot water tank 4 and the cold water tank 3 without taking up space or having to be removed, making it more convenient to use.

[0037] Furthermore, a third driving component is provided on the cold water tank 3, hot water tank 4, or tank cover 20. The third driving component is used to drive the tank cover 20 to slide on the track. By driving the tank cover 20 to switch back and forth on the top of the cold water tank 3 and hot water tank 4, the automation level of the test device is improved and the intensity of manual labor is reduced. The third driving component can be driven by a servo motor or a telescopic cylinder.

[0038] In this embodiment, the test device is equipped with an external power supply and a PLC controller. The PLC controller is connected to the first drive component 9, the second drive component 10, the third drive component, the electrically controlled telescopic rod 18, the drying oven 2, the cold water tank 3, and the hot water tank 4, and is used to control the working status of each electrical component.

[0039] The experimental procedure for this utility model's experimental device is as follows:

[0040] Thermal shock test procedure: The mobile module drives the basket 5 to move to the loading / unloading station 19, places the insulator to be tested inside the basket 5, and controls the mobile module to drive the basket 5 to rise to the predetermined height. The electric telescopic rod 18 drives the oven 2 to open, and the mobile module drives the basket 5 to move inside the oven 2. The electric telescopic rod 18 then drives the oven 2 to close. After the insulator has been heated in the oven 2 for the set time, the electric telescopic rod 18 drives the oven 2 to open, and the mobile module drives the basket 5 to move above the cold water tank 3. At the same time, the electric telescopic rod 18 drives the oven 2 to close, and the mobile module drives the basket 5 to descend into the cold water tank 3. After the insulator has cooled in the cold water tank 3 for the set time, the mobile module drives the basket 5 to rise and move it out of the cold water tank 3, completing one thermal shock test cycle.

[0041] Temperature cycling test procedure: The movable module drives the basket 5 to move to the loading / unloading station 19, places the insulator to be tested inside the basket 5, and controls the movable module to drive the basket 5 to rise to a predetermined height. The movable module then drives the basket 5 to move above the hot water tank 4, and controls the third drive component to drive the box cover 20 to slide to the top of the cold water tank 3. The movable module then drives the basket 5 to descend into the hot water tank 4. After the insulator has been heated in the hot water tank 4 for a set time, the movable module drives the basket 5 to rise to a predetermined height again. The basket 5 is then moved above the cold water tank 3, and the third drive component drives the box cover 20 to slide to the top of the hot water tank 4. The movable module then drives the basket 5 to descend into the cold water tank 3. After the insulator has been cooled in the cold water tank 3 for a set time, the movable module drives the basket 5 to rise to a predetermined height. The above test process is repeated 3 times to complete one temperature cycling test cycle.

[0042] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for thermal shock and temperature cycle test of insulators, characterized in that, The utility model provides a kind of test device for insulator, including rack (1), oven (2), cold water tank (3) and hot water tank (4) are installed on the rack (1), the top of the rack (1) is installed with hanging basket (5) by moving module, the moving module is used to drive hanging basket (5) to move to oven (2), cold water tank (3) or hot water tank (4).

2. The thermal shock and temperature cycle test device for insulators according to claim 1, wherein The moving module includes a horizontal moving mechanism and a lifting mechanism, the lifting mechanism is installed on the horizontal moving mechanism, and the hanging basket (5) is installed on the lifting mechanism.

3. The thermal shock and temperature cycle test device for insulators according to claim 2, wherein The horizontal moving mechanism includes two horizontal rails (6) arranged in parallel on the top of the rack (1), a sliding table (7) is slidably installed on the rails (6) by a sliding block, a rack (8) is provided on the rack (1) along the length direction of the rails (6), a first driving component (9) is installed on the sliding table (7), and a gear is installed on the output shaft of the first driving component (9) to engage with the rack (8). The sliding table (7) is driven to slide along the rails (6) by the first driving component (9).

4. The apparatus for thermal shock and temperature cycle testing of an insulator according to claim 3, wherein The lifting mechanism includes a second driving component (10) installed on the top surface of the sliding table (7), a transmission shaft (11), a diverter (12), and four screw jacks (13), the bottom of a screw rod (14) of each screw jack (13) is connected with the hanging basket (5), and the four screw jacks (13) are installed at the four corners of the sliding table (7) respectively. The four screw jacks (13) are connected with the second driving component (10) through multiple diverters (12) and transmission shafts (11).

5. The apparatus for thermal shock and temperature cycle testing of an insulator according to claim 4, wherein A support (15) is provided in the rack (1), the oven (2) is installed on the support (15), a door (16) is provided on the side of the oven (2) for the hanging basket (5) to enter or exit, and an avoiding groove (17) is provided on the top of the oven (2) along the length direction of the rails (6) to avoid the screw rod (14).

6. The thermal shock and temperature cycle test apparatus for insulators as claimed in claim 5, wherein The door (16) is hinged to the oven (2), an electric control telescopic rod (18) is installed on the support (15), the two ends of the electric control telescopic rod (18) are hinged to the door (16) and the support (15) respectively, and the electric control telescopic rod (18) is used to drive the door (16) to open and close.

7. The thermal shock and temperature cycle test device for insulators according to claim 1, wherein An upper and lower material station (19) is provided on the rack (1) to put the insulator to be tested into the hanging basket (5) or take out the tested insulator from the hanging basket (5).

8. The thermal shock and temperature cycle test device for insulators according to claim 1, wherein The cold water tank (3) and the hot water tank (4) are adjacent, and tracks are provided on the top surfaces of the cold water tank (3) and the hot water tank (4), a tank cover (20) is slidably connected to the tracks, and the tank cover (20) is switched back and forth on the top surfaces of the cold water tank (3) and the hot water tank (4) by sliding the tank cover (20).

9. The apparatus for thermal shock and temperature cycle testing of an insulator according to claim 8, wherein A third driving component is provided on the cold water tank (3), the hot water tank (4), or the tank cover (20), and the third driving component is used to drive the tank cover (20) to slide on the tracks.

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