A transformer maintenance testing apparatus

Abstract

The utility model provides a kind of transformer maintenance detection equipment, including sealing disc, measuring rod and clamping mechanism.Use, by the sealing disc cover is established in oil tank pipe orifice top, then through drive assembly drive multiple sets of clamping claw folding rotation, multiple sets of clamping claw folding rotation can be clamped oil tank pipe orifice, to fix sealing disc on oil tank pipe orifice, and make sealing disc and oil tank pipe orifice coaxial, fixed sealing disc is convenient, and it is convenient to clamp different size oil tank pipe orifice, then the measuring rod passes through through-hole and inserts into oil tank can make measuring rod keep vertical state and detect oil level, improve the accuracy of oil level detection, and the setting of sealing disc effectively reduces the gap between measuring rod and oil tank pipe orifice, to effectively avoid that foreign matter enters oil tank.

Description

Technical Field

[0001] This utility model relates to the field of power facility maintenance and testing technology, specifically to a transformer maintenance and testing device. Background Technology

[0002] In power infrastructure, transformers are key equipment connecting the core links of power generation, transmission, distribution, and consumption, serving as both "energy converters" and "voltage regulators" for power transmission. At the generation end, they boost the low-voltage electricity output from generators to ultra-high voltage, significantly reducing long-distance transmission losses and supporting inter-regional power dispatch. After transmission, through multi-stage voltage reduction to meet requirements, the voltage is lowered from the substation's high voltage to the distribution room's 220V / 380V, satisfying both residential and industrial power needs. Simultaneously, some isolation transformers can block fault conduction and stabilize voltage, directly determining power transmission efficiency, power supply security, and economy, making them an indispensable core support for modern large-scale power supply systems.

[0003] Currently, when detecting transformer oil levels, most methods involve directly inserting a measuring rod into the oil tank. However, during the testing process, it's difficult to keep the measuring rod vertical; tilting the rod can lead to inaccurate oil level readings. Furthermore, the large gap between the measuring rod and the tank inlet allows external impurities to enter the tank. Therefore, to address these technical problems, a transformer maintenance and testing device is proposed. Utility Model Content

[0004] In view of the shortcomings of the existing technology, this utility model proposes a transformer repair and testing device, which facilitates the positioning of the measuring rod, improves the accuracy of oil level detection, and effectively prevents external impurities from entering the oil tank.

[0005] A transformer repair and testing device, comprising:

[0006] The sealing plate has a mounting post coaxially arranged at its top end, and the top end of the mounting post has a through hole that penetrates the mounting post and the sealing plate along its axial direction;

[0007] The measuring rod is slidably inserted into the through hole; and

[0008] The clamping mechanism includes clamping claws and a drive assembly. Multiple sets of clamping claws are evenly hinged around the periphery of the sealing disc. The drive assembly connects the mounting post and the multiple sets of clamping claws. The drive assembly can drive the lower parts of the multiple sets of clamping claws to close or open outward toward the axis of the sealing disc.

[0009] The beneficial effects of the above-mentioned transformer repair and testing equipment are as follows:

[0010] In use, the sealing plate is placed on top of the oil tank opening, and then the drive assembly drives multiple sets of clamping claws to close and rotate. The closing and rotation of the multiple sets of clamping claws can clamp the oil tank opening, thereby fixing the sealing plate on the oil tank opening and making the sealing plate coaxial with the oil tank opening. Fixing the sealing plate is convenient and it is easy to clamp oil tank openings of different sizes. Then, the measuring rod is inserted into the oil tank through the through hole, and the measuring rod is kept in a vertical position to detect the oil level, which improves the accuracy of oil level detection. In addition, the setting of the sealing plate effectively reduces the gap between the measuring rod and the oil tank opening, thereby effectively preventing external impurities from entering the oil tank.

[0011] In one embodiment, a rubber pad is provided at the bottom of the sealing plate.

[0012] In one embodiment, the top of the rubber pad is provided with a plurality of sets of locking pins evenly distributed along its circumference, and the bottom of the sealing disc is provided with a plurality of sets of locking holes evenly distributed along its circumference, wherein the plurality of locking pins can be locked in the plurality of locking holes.

[0013] In one embodiment, the outer peripheral wall of the measuring rod is sealed to the inner peripheral wall of the through hole.

[0014] In one embodiment, the drive assembly includes a threaded sleeve, a connecting ring, and a connecting rod; the mounting post has an external thread on its circumference, the threaded sleeve is threaded onto the external thread, the threaded sleeve has a fixed ring groove coaxially formed on its circumference, the connecting ring is rotatably disposed coaxially within the fixed ring groove, and multiple sets of the connecting rods are hinged circumferentially to the connecting ring, with one end of each set of the connecting rods being hinged to the upper part of multiple sets of clamping claws.

[0015] In one embodiment, a piston chamber is provided in the lower part of the measuring rod, and a piston is slidably disposed in the piston chamber. A push-pull rod is provided at the top of the piston, one end of which extends out of the top of the measuring rod and is provided with a push-pull ring. Multiple sets of liquid inlet holes communicating with the bottom end of the piston chamber are evenly provided on the lower periphery of the measuring rod.

[0016] In one embodiment, the mounting post is threadedly connected to a fixed knob that abuts against the periphery of the measuring rod.

[0017] In one embodiment, a filter screen covering multiple sets of liquid inlet holes is fitted around the lower periphery of the measuring rod.

[0018] In one embodiment, a clearance groove is provided on the lower periphery of the measuring rod, and the filter screen is fitted inside the clearance groove, with its outer periphery flush with the outer periphery of the measuring rod.

[0019] In one embodiment, the filter sleeve is made of an elastic material and has a notch. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1 A three-dimensional structural diagram of a transformer repair and testing equipment provided in an embodiment of this utility model;

[0022] Figure 2 for Figure 1 An exploded view of a transformer repair and testing equipment is shown below.

[0023] Figure 3 for Figure 1 The image shown is an exploded view of a measuring rod cut open in a transformer repair and testing device.

[0024] Figure 4 for Figure 3 An enlarged schematic diagram of region A in the middle.

[0025] Figure label:

[0026] 10. Sealing plate; 101. Mounting post; 1011. External thread; 102. Rubber pad; 1021. Locking pin; 103. Fixing knob;

[0027] 20. Measuring rod; 201. Piston chamber; 202. Piston; 203. Push-pull rod; 2031. Push-pull ring; 204. Liquid inlet; 205. Filter screen sleeve; 2051. Notch; 206. Relief ring groove;

[0028] 30. Clamping claw; 301. Threaded sleeve; 3011. Fixing ring groove; 302. Connecting ring; 303. Connecting rod. Detailed Implementation

[0029] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention.

[0030] Please see Figure 1One embodiment of a transformer repair and testing device includes a sealing plate 10, a measuring rod 20, and a clamping mechanism. Specifically, a mounting post 101 is coaxially disposed at the top of the sealing plate 10, and a through hole is formed at the top of the mounting post 101 along its axial direction, penetrating both the mounting post 101 and the sealing plate 10. The measuring rod 20 slides through the through hole. The clamping mechanism includes clamping claws 30 and a drive assembly. Multiple sets of clamping claws 30 are uniformly hinged along the circumference of the sealing plate 10. The drive assembly connects the mounting post 101 and the multiple sets of clamping claws 30, and can drive the lower parts of the multiple sets of clamping claws 30 to close or open outward toward the axis of the sealing plate 10.

[0031] In the above embodiments, during use, the sealing plate 10 is placed on the top of the oil tank opening (not shown in the figure), and then the drive assembly drives multiple sets of clamping claws 30 to close and rotate. The multiple sets of clamping claws 30 can clamp the oil tank opening, thereby fixing the sealing plate 10 on the oil tank opening and making the sealing plate 10 coaxial with the oil tank opening. Fixing the sealing plate 10 is convenient and it is easy to clamp oil tank openings of different sizes. Then, the measuring rod 20 is inserted into the oil tank through the through hole, so that the measuring rod 20 can be kept in a vertical state to detect the oil level, improving the accuracy of oil level detection. In addition, the setting of the sealing plate 10 effectively reduces the gap between the measuring rod 20 and the oil tank opening, thereby effectively preventing external impurities from entering the oil tank.

[0032] Please refer to the following: Figure 2 Specifically, the drive assembly includes a threaded sleeve 301, a connecting ring 302, and a connecting rod 303; the mounting post 101 is provided with an external thread 1011 on its circumference, the threaded sleeve 301 is threadedly connected to the external thread 1011, the threaded sleeve 301 is coaxially provided with a fixing ring groove 3011 on its circumference, the connecting ring 302 is coaxially rotatably disposed in the fixing ring groove 3011, and multiple sets of connecting rods 303 are hinged to the circumference of the connecting ring 302, and one end of each set of connecting rods 303 is respectively hinged to the upper part of multiple sets of clamping claws 30.

[0033] The threaded sleeve 301 can be driven to move by rotating it to engage with the external thread 1011. The movement of the threaded sleeve 301 drives the connecting ring 302 to move. The movement of the connecting ring 302 can drive the multiple sets of clamping claws 30 to close and rotate through the multiple sets of connecting rods 303. Conversely, by rotating the threaded sleeve 301 in the opposite direction, the connecting ring 302 can be driven to move in the opposite direction. The movement of the connecting ring 302 in the opposite direction can drive the multiple sets of clamping claws 30 to open and rotate through the multiple sets of connecting rods 303. It is convenient to drive the multiple sets of clamping claws 30 to close or open and rotate.

[0034] Please see Figure 1In one embodiment, a rubber pad 102 is provided at the bottom of the sealing plate 10. By providing the rubber pad 102, when the sealing plate 10 is placed on the top of the oil tank pipe opening, pressing the sealing plate 10 can cause the rubber pad 102 to undergo elastic deformation, thereby facilitating the sealing of the gap between the sealing plate 10 and the top of the oil tank pipe opening, and further preventing external impurities from entering the oil tank.

[0035] Please refer to the following: Figure 2 Furthermore, the top of the rubber pad 102 is evenly provided with multiple sets of locking pins 1021 along its circumference, and the bottom of the sealing plate 10 is evenly provided with multiple sets of locking holes along its circumference. The multiple sets of locking pins 1021 can be locked into the multiple sets of locking holes. The rubber pad 102 and the sealing plate 10 are connected by a snap-fit ​​connection, which makes it convenient to install and remove the rubber pad 102, and also facilitates the individual replacement of the rubber pad 102, reducing replacement costs.

[0036] Please see Figure 1 and Figure 2 In one embodiment, the outer peripheral wall of the measuring rod 20 is sealed to the inner peripheral wall of the through hole. This prevents external impurities from entering the oil tank through the through hole.

[0037] Please see Figure 1 , Figure 3 and Figure 4 In one embodiment, a piston chamber 201 is provided in the lower part of the measuring rod 20, and a piston 202 is slidably disposed in the piston chamber 201. A push-pull rod 203 is provided at the top of the piston 202. One end of the push-pull rod 203 extends out of the top of the measuring rod 20 and is provided with a push-pull ring 2031. Multiple sets of liquid inlet holes 204 communicating with the bottom end of the piston chamber 201 are evenly provided along the circumference of the lower part of the measuring rod 20.

[0038] In the above embodiment, by moving the push-pull rod 203 upward to drive the piston 202 upward, oil can be drawn into the piston chamber 201 through the liquid inlet 204, which facilitates the sampling of oil in the oil tank and improves the practicality of the device. Furthermore, by setting the push-pull ring 2031, it is convenient to move the push-pull rod 203.

[0039] Please refer to the following: Figure 2 Furthermore, the mounting post 101 is threaded around its periphery with a fixing knob 103 that abuts against the periphery of the measuring rod 20. By setting the fixing knob 103, it is easy to fix the measuring rod 20 to the mounting post 101, thereby facilitating the collection of oil samples at different depths by adjusting and fixing the depth of the measuring rod 20 inserted into the oil.

[0040] Please see Figure 3 and Figure 4 In one embodiment, a filter screen sleeve 205 covering multiple sets of liquid inlet holes 204 is fitted around the lower periphery of the measuring rod 20. By setting the filter screen sleeve 205, impurities in the oil tank can be prevented from clogging the liquid inlet holes 204.

[0041] Furthermore, a clearance groove 206 is provided on the lower circumference of the measuring rod 20, and the filter screen sleeve 205 is fitted inside the clearance groove 206, with its outer circumference flush with the outer circumference of the measuring rod 20. This facilitates the sliding of the measuring rod 20 within the through hole and prevents the filter screen sleeve 205 from contacting the end of the through hole.

[0042] Furthermore, the filter sleeve 205 is made of elastic material and has a notch 2051. This facilitates the installation of the filter sleeve 205 in or removal from the relief ring groove 206, making it convenient to replace the filter sleeve 205.

[0043] The specific implementation method of the above-mentioned transformer repair and testing equipment is as follows:

[0044] In use, by placing the sealing plate 10 on top of the oil tank opening and pressing it down, the rubber gasket 102 undergoes elastic deformation to seal the gap between the sealing plate 10 and the top of the oil tank opening. Then, by rotating the threaded sleeve 301 and engaging the external thread 1011, the threaded sleeve 301 drives the connecting ring 302 to move. The movement of the connecting ring 302 drives multiple sets of clamping claws 30 to close and rotate through multiple sets of connecting rods 303. The closing and rotation of the multiple sets of clamping claws 30 can clamp the oil tank opening, thereby fixing the sealing plate 10 on the oil tank opening and making the sealing plate 10 coaxial with the oil tank opening. Fixing the sealing plate 10 is convenient and it is easy to clamp oil tank openings of different sizes. The setting of the sealing plate 10 effectively reduces the gap between the measuring rod 20 and the oil tank opening, thereby effectively preventing external impurities from entering the oil tank. Finally, by inserting the measuring rod 20 through the through hole into the oil tank, the measuring rod 20 can be kept in a vertical position to detect the oil level, improving the accuracy of oil level detection.

[0045] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model.

Claims

1. A transformer repair and testing device, characterized in that, include: The sealing plate (10) has a mounting post (101) coaxially arranged at its top end. The top end of the mounting post (101) has a through hole that penetrates the mounting post (101) and the sealing plate (10) along its axial direction. The measuring rod (20) is slidably inserted into the through hole; and The clamping mechanism includes clamping claws (30) and a drive assembly. Multiple sets of clamping claws (30) are evenly hinged around the periphery of the sealing disc (10). The drive assembly connects the mounting post (101) and the multiple sets of clamping claws (30). The drive assembly can drive the lower parts of the multiple sets of clamping claws (30) to close or open towards the axis of the sealing disc (10).

2. The transformer repair and testing equipment according to claim 1, characterized in that, A rubber pad (102) is provided at the bottom of the sealing plate (10).

3. The transformer repair and testing equipment according to claim 2, characterized in that, The top of the rubber pad (102) is uniformly provided with multiple sets of locking pins (1021) along its circumference, and the bottom of the sealing plate (10) is uniformly provided with multiple sets of locking holes along its circumference. The multiple sets of locking pins (1021) can be locked in the multiple sets of locking holes.

4. The transformer repair and testing equipment according to claim 1, characterized in that, The outer peripheral wall of the measuring rod (20) is sealed and fitted to the inner peripheral wall of the through hole.

5. The transformer repair and testing equipment according to claim 1, characterized in that, The drive assembly includes a threaded sleeve (301), a connecting ring (302), and a connecting rod (303); the mounting post (101) is provided with an external thread (1011) on its periphery, the threaded sleeve (301) is threaded onto the external thread (1011), the threaded sleeve (301) is coaxially provided with a fixing ring groove (3011) on its periphery, the connecting ring (302) is coaxially rotatably disposed in the fixing ring groove (3011), and multiple sets of the connecting rods (303) are hinged to the periphery of the connecting ring (302) along its circumferential direction, and one end of the multiple sets of the connecting rods (303) is respectively hinged to the upper part of the multiple sets of clamping claws (30).

6. The transformer repair and testing equipment according to claim 1, characterized in that, The measuring rod (20) has a piston chamber (201) in its lower part. A piston (202) is slidably disposed in the piston chamber (201). A push-pull rod (203) is disposed at the top of the piston (202). One end of the push-pull rod (203) extends out of the top of the measuring rod (20) and is provided with a push-pull ring (2031). Multiple sets of liquid inlet holes (204) communicating with the bottom end of the piston chamber (201) are evenly disposed on the lower periphery of the measuring rod (20).

7. The transformer repair and testing equipment according to claim 6, characterized in that, The mounting post (101) has a threaded connection on its periphery to a fixed knob (103) that can abut against the periphery of the measuring rod (20).

8. A transformer repair and testing equipment according to claim 6, characterized in that, The measuring rod (20) is fitted with a filter screen (205) covering multiple sets of liquid inlet holes (204) on its lower periphery.

9. A transformer repair and testing equipment according to claim 8, characterized in that, The measuring rod (20) has a relief groove (206) on its lower circumference. The filter screen sleeve (205) is fitted inside the relief groove (206) and its outer circumference is flush with the outer circumference of the measuring rod (20).

10. A transformer repair and testing equipment according to claim 9, characterized in that, The filter screen sleeve (205) is made of elastic material and has a notch (2051).

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