Online detection device for oil level of transformer

Abstract

The utility model relates to the technical field of oil level detection, and particularly discloses a transformer oil level on-line detection device which comprises a machine body, and a detection rod is installed in the machine body. A filter cartridge is mounted on the outer side of the circumferential surface of the lower end of the detection rod, a chassis is fixedly mounted at the lower end of the filter cartridge, and a plurality of screws and meshing rods are rotationally mounted on the upper end surface of the chassis; sliding blocks are installed on the circumferential faces of the multiple screws in a sliding mode, double-end gears are installed on the circumferential faces of the multiple meshing rods in a sliding mode, and connecting rods are arranged between the sliding blocks and the adjacent double-end gears. The internal circumferential surface of the filter cartridge can be cleaned under the cooperation of a main gear, a screw rod, a meshing rod, a rotating ring, an inner cleaning brush and other structures, so that the internal surface of the filter cartridge cannot be blocked, and the condition that the filter cartridge device is blocked by impurities in oil can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of oil level detection, in particular to an online transformer oil level detection device. Background Art

[0002] A transformer oil level online detection device is an intelligent device used to monitor the transformer oil level in real time. This device can accurately measure the height of the transformer oil level, detect oil level abnormalities in a timely manner, and notify the operation and maintenance personnel through remote data transmission, thereby ensuring the safe and reliable operation of the power system.

[0003] The oil level detection devices currently on the market require the lower end of the detection device to be inserted into the interior of the transformer during use so that it can operate on devices such as capacitors. Since the lower end of the detection device needs to be immersed in oil for a long time, the oil can pass through the oil hole into the interior of the detection device to obtain the oil level.

[0004] However, the detection devices on the market do not have any protective measures at the lower end, resulting in the lower end of the detection device being immersed in oil for a long time, and impurities condensed into lumps inside the oil, which in turn cause the impurities to block the oil inlet of the detection device, thereby affecting the detection of the oil level. Therefore, a few oil level detection devices on the market have filtering devices installed at the lower end to prevent the entry of impurities. However, with the use of time, the impurities in the oil will be adsorbed on the inner and outer surfaces of the filtering device, thereby affecting the filtration of the filtering device and the entry of oil into the detection device, thereby affecting the height deviation of the detection device when detecting the oil level. Utility Model Content

[0005] The purpose of the utility model is to provide an online detection device for the oil level of a transformer, which can clean the inner circumferential surface of the filter cartridge with the cooperation of multiple structures such as a main gear, a screw, an engaging rod, a swivel, and an internal cleaning brush, so that the inner surface of the filter cartridge will not be blocked, thereby preventing impurities in the oil from clogging the filter cartridge device, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an online transformer oil level detection device, comprising a body, wherein a detection rod is installed inside the body;

[0007] A filter cartridge is installed on the outer side of the circumferential surface of the lower end of the detection rod, a chassis is fixedly installed on the lower end of the filter cartridge, and a plurality of screw rods and meshing rods are rotatably installed on the upper end surface of the chassis;

[0008] Slide blocks are slidably mounted on the circumferential surfaces of the plurality of screw rods, double-headed gears are slidably mounted on the circumferential surfaces of the plurality of meshing rods, and connecting rods are arranged between the slide blocks and adjacent double-headed gears;

[0009] A swivel is rotatably mounted on the outer sides of the slider and the double-headed gear, and a plurality of inner cleaning brushes are fixedly mounted on the outer circumferential surface of the swivel.

[0010] Preferably, an oil-proof servo motor is fixedly installed at the center of the chassis, a main gear is fixedly installed on the output shaft of the oil-proof servo motor, a first passive gear is fixedly installed on the circumferential surface of the screw rod located on the right side of the main gear, a second passive gear is fixedly installed on the circumferential surface of the meshing rod located in front of the main gear, and the main gear is meshed with the first passive gear and the second passive gear.

[0011] Preferably, an annular groove is provided on the inner circumferential surface of the rotating ring, annular tooth grooves are provided on the inner circumferential surface of the rotating ring at upper and lower positions of the annular groove, and the double-headed gear is meshed with the annular tooth groove.

[0012] Preferably, the middle portion of the double-headed gear is rotatably connected to the connecting rod, and the ends of the two sliding blocks that are away from each other are slidably installed inside the annular groove.

[0013] Preferably, a mounting plate is fixedly mounted on the circumferential surface of the detection rod at the upper end of the filter cartridge, two first slide grooves are provided on the upper end surface of the mounting plate, two gear grooves are provided on the upper end surface of the mounting plate located outside the first slide grooves, and tooth grooves are provided on the inner outer surfaces of the two gear grooves.

[0014] Preferably, a limited support slider is slidably installed inside the first slide groove, and a forward and reverse motor is fixedly installed on the end away from the upper end of the limited support slider. A first gear is rotatably installed inside the gear groove, and the upper end of the first gear is fixedly connected to the output shaft of the forward and reverse motor, and the lower end of the first gear is fixedly connected to an external cleaning brush.

[0015] Preferably, a through installation slot is provided from the upper end surface to the lower end surface of the installation plate, and two installation rods are fixedly installed on the upper end surface of the chassis. The upper ends of the two installation rods are slidably installed inside adjacent installation slots and the upper ends pass through the installation slots.

[0016] Preferably, an air outlet is provided on the upper circumferential surface of the detection rod, a flange is fixedly installed on the upper circumferential surface of the detection rod, a gasket is provided on the circumferential surface of the detection rod at the lower end surface of the flange, a detection box is fixedly installed on the upper end surface of the flange, a connecting line is fixedly installed on the circumferential surface of the detection box, two screw grooves are provided on the lower circumferential surface of the detection rod, and the slider and the screw are installed inside the screw grooves.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] 1. Compared with traditional devices on the market, the utility model can clean the inner circumferential surface of the filter cartridge with the cooperation of multiple structures such as the main gear, the screw, the meshing rod, the swivel, and the internal cleaning brush, so that the inner surface of the filter cartridge will not be blocked, thereby preventing impurities in the oil from clogging the filter cartridge device.

[0019] 2. With the cooperation of the installation slot, the installation rod and other structures, this device allows the user to disassemble and install the filter cartridge device at an excessive speed, thereby avoiding the situation where the internal part cannot be repaired during subsequent maintenance and repair of the device; and during use, with the cooperation of multiple structures such as the first gear and the external cleaning brush, the outer surface of the filter cartridge can be cleaned, thereby achieving double-layer cleaning of the inside and outside of the filter cartridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is an external view of the body of the utility model;

[0022] Figure 2 This is a structural diagram of the detection rod of the utility model;

[0023] Figure 3 It is a schematic diagram of the installation plate and the external cleaning brush of the utility model;

[0024] Figure 4 It is a schematic diagram of the filter cartridge of the utility model;

[0025] Figure 5 This is a schematic diagram of the main gear of the utility model;

[0026] Figure 6 It is a schematic diagram of the first passive gear and the second passive gear of the utility model;

[0027] Figure 7 It is a schematic diagram of the meshing rod and double-headed gear of the utility model;

[0028] Figure 8 It is a schematic diagram of the swivel and the inner cleaning brush of the utility model;

[0029] Description of reference numerals:

[0030] 1. Machine body; 2. Detection rod; 21. Gasket; 22. Flange; 23. Detection box; 24. Connecting wire; 25. Air outlet; 26. Screw groove;

[0031] 3. Mounting plate; 31. First slide slot; 32. Gear slot; 321. Tooth slot; 33. Mounting slot; 4. Position-limiting support slider; 41. Forward and reverse motor; 42. First gear; 45. External cleaning brush;

[0032] 6. chassis; 61. mounting rod; 62. filter cartridge; 7. oil-proof servo motor; 71. main gear; 8. first passive gear; 81. screw rod; 82. slider; 83. connecting rod; 9. second passive gear; 91. meshing rod; 92. double-headed gear; 10. swivel; 11. ring groove; 12. ring tooth groove; 13. internal cleaning brush. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] See also Figures 1 to 8 , the utility model provides a technical solution:

[0035] A transformer oil level online detection device comprises a body 1, wherein a detection rod 2 is installed inside the body 1; a filter cartridge 62 is installed on the outer side of the lower end circumferential surface of the detection rod 2, a chassis 6 is fixedly installed on the lower end of the filter cartridge 62, and a plurality of screw rods 81 and an engaging rod 91 are rotatably installed on the upper end surface of the chassis 6; a plurality of sliders 82 are slidably installed on the circumferential surfaces of the screw rods 81, a plurality of double-headed gears 92 are slidably installed on the circumferential surfaces of the engaging rods 91, a connecting rod 83 is provided between the slider 82 and the adjacent double-headed gear 92, a swivel 10 is rotatably installed on the outer side of the slider 82 and the double-headed gear 92, and a plurality of inner cleaning brushes 13 are fixedly installed on the outer circumferential surface of the swivel 10.

[0036] An oil-proof servo motor 7 is fixedly installed at the center of the chassis 6, and a main gear 71 is fixedly installed on the output shaft of the oil-proof servo motor 7. A first passive gear 8 is fixedly installed on the circumferential surface of the screw rod 81 located on the right side of the main gear 71, and a second passive gear 9 is fixedly installed on the circumferential surface of the meshing rod 91 located in front of the main gear 71. The main gear 71 is meshed with the first passive gear 8 and the second passive gear 9. An annular groove 11 is provided on the inner circumferential surface of the rotating ring 10, and annular tooth grooves 12 are provided on the inner circumferential surface of the rotating ring 10 at the upper and lower positions of the annular groove 11. The double-headed gear 92 is meshed with the annular tooth groove 12, and the middle part of the double-headed gear 92 is rotatably connected with the connecting rod 83, and the ends of the two sliders 82 that are away from each other are slidably installed inside the annular groove 11.

[0037] By adopting the above technical solution, when in use, driven by the flange 22, the detection rod 2 can be installed inside the body 1, and the flange 22 is installed on the upper surface of the body 1. After the detection rod 2 is installed inside the body 1, the oil inside the body 1 will pass through the filter cartridge 62 and enter the detection rod 2, so that under the detection of structures such as capacitors, the detection box 23 can obtain the oil level inside the body 1 in real time; then during use, impurities will gradually appear in the oil inside the body 1, and since the aperture on the circumferential surface of the filter cartridge 62 is very small, once impurities are stuck in the filter hole, it will affect the oil from entering the detection device over time. Therefore, the output shaft of the oil-proof servo motor 7 will rotate synchronously with the main gear 71, and the main gear 71 will drive the meshing first passive gear 8 and the second passive gear 9 to rotate, so that the slider 82 on the circumferential surface of the screw 81 can rotate with The ring 10 moves up and down, and because the slider 82 and the swivel 10 are in a sliding connection, when the meshing rod 91 drives the double-headed gear 92 to rotate, the double-headed gear 92 will drive the swivel 10 to rotate synchronously, so that the swivel 10 can maintain a rotating state during the up and down movement, thereby allowing the swivel 10 to carry the inner cleaning brush 13 on the outer circumferential surface to clean the inner surface of the filter cartridge 62, and during use, due to the restrictions of the slider 82 and the double-headed gear 92, the swivel 10 is prevented from falling off by itself, thereby ensuring the safety of cleaning; and in the process of detection by the detection rod 2, its detection box 23 will always retain the data, and then under the action of the connecting line 24, the data can be transmitted to a computer, a mobile phone or other data terminal in real time, so as to obtain the height of the oil level inside the body 1 in real time.

[0038] Specifically, Figures 1 to 8As shown, a mounting plate 3 is fixedly installed on the circumferential surface of the detection rod 2 at the upper end of the filter cylinder 62, and two first slide grooves 31 are provided on the upper end surface of the mounting plate 3, and two gear grooves 32 are provided on the upper end surface of the mounting plate 3 located on the outer side of the first slide groove 31, and tooth grooves 321 are provided on the inner outer sides of the two gear grooves 32, and a limited support slider 4 is slidably installed inside the first slide groove 31, and a forward and reverse motor 41 is fixedly installed on the end away from the upper end of the limited support slider 4, and a first gear 42 is rotatably installed inside the gear groove 32, and the upper end of the first gear 42 is fixedly connected to the output shaft of the forward and reverse motor 41, and the lower end of the first gear 42 is fixedly connected to an external cleaning brush 45.

[0039] A through installation slot 33 is provided from the upper end surface to the lower end surface of the installation plate 3, two installation rods 61 are fixedly installed on the upper end surface of the chassis 6, the upper ends of the two installation rods 61 are slidably installed in the interior of adjacent installation slots 33 and the upper ends pass through the installation slots 33, an air outlet 25 is provided on the upper circumferential surface of the detection rod 2, a flange 22 is fixedly installed on the upper circumferential surface of the detection rod 2, a gasket 21 is provided on the circumferential surface of the detection rod 2 at the lower end surface of the flange 22, a detection box 23 is fixedly installed on the upper end surface of the flange 22, a connecting line 24 is fixedly installed on the circumferential surface of the detection box 23, two screw grooves 26 are provided on the lower circumferential surface of the detection rod 2, and the slider 82 and the screw 81 are installed inside the screw groove 26.

[0040] By adopting the above technical solution, when in use, the tops of the two installation rods 61 on the upper end surface of the chassis 6 will pass through the installation slots 33 provided on the mounting plate 3, so that the filter cartridge 62 can be sleeved on the outer side surface of the lower end of the detection rod 2 to perform filtering operations, thereby blocking impurities in the oil and preventing impurities from affecting the detection. Under the combination of the installation slots 33 and the installation rods 61, quick plug-in can be achieved, so that the parts inside the filter cartridge 62 can be checked during the subsequent maintenance and inspection of the detection device, avoiding damage to the parts by using disassembly tools; secondly, since the filter cartridge 62 has an inner and outer double layer, in order to ensure the filtering performance of the outer side of the filter cartridge 62, during use, the output shaft of the forward and reverse motor 41 will drive the first gear 42 to rotate, and the first gear 4 2 is fixedly mounted with a cylinder at the center of the lower end surface, and an outer cleaning brush 45 is fixedly mounted at the lower end of the cylinder. Therefore, during use, when the first gear 42 moves along the gear groove 32, the outer cleaning brush 45 will rotate synchronously driven by the first gear 42, so that the outer surface of the filter cartridge 62 can be cleaned. Due to the influence of the forward and reverse motor 41, the outer cleaning brush 45 will continue to work back and forth, so as to ensure that the outer surface of the filter cartridge 62 is clean and the filter holes of the filter cartridge 62 can operate normally. In addition, during use, due to the limitation of the limit support slider 4, the forward and reverse motors 41 and the first gear 42 will not be separated from the tooth groove 321 inside the gear groove 32; thereby, the air permeability and practicality of the inner and outer double layers of the filter cartridge 62 are ensured.

[0041] Working principle: First, the filter cartridge 62 and the mounting plate 3 can be combined together under the action of the insertion rod 61, so that the filter cartridge 62 can perform filtering operations.

[0042] Secondly, under the action of the oil-proof servo motor 7, the first passive gear 8 and the second passive gear 9 are driven to rotate synchronously, so that the slider 82 can move the rotating ring 10 up and down, and under the action of the double-headed gear 92, the rotating ring 10 can rotate, thereby allowing the internal cleaning brush 13 to perform cleaning operations.

[0043] Then, driven by the forward and reverse motor 41 , the first gear 42 can rotate with the outer cleaning brush 45 , so that the outer cleaning brush 45 can clean the outer surface of the filter cartridge 62 , thereby achieving double-layer cleaning of the inner and outer layers of the filter cartridge 62 .

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A transformer oil level online detection device, comprising a body (1), characterized in that: A detection rod (2) is installed inside the machine body (1); A filter cartridge (62) is mounted on the outer side of the circumferential surface of the lower end of the detection rod (2); a bottom plate (6) is fixedly mounted on the lower end of the filter cartridge (62); and a plurality of screw rods (81) and meshing rods (91) are rotatably mounted on the upper end surface of the bottom plate (6); Slide blocks (82) are slidably mounted on the circumferential surfaces of the plurality of screw rods (81), double-headed gears (92) are slidably mounted on the circumferential surfaces of the plurality of meshing rods (91), and connecting rods (83) are provided between the slide blocks (82) and adjacent double-headed gears (92); A rotating ring (10) is rotatably mounted on the outer sides of the slider (82) and the double-headed gear (92), and a plurality of internal cleaning brushes (13) are fixedly mounted on the outer circumferential surface of the rotating ring (10).

2. A transformer oil level online detection device according to claim 1, characterized in that: An oil-proof servo motor (7) is fixedly mounted at the center of the chassis (6); a main gear (71) is fixedly mounted on the output shaft of the oil-proof servo motor (7); a first passive gear (8) is fixedly mounted on the circumferential surface of the screw rod (81) located on the right side of the main gear (71); a second passive gear (9) is fixedly mounted on the circumferential surface of the meshing rod (91) located in front of the main gear (71); and the main gear (71) meshes with the first passive gear (8) and the second passive gear (9).

3. The transformer oil level online detection device according to claim 1, characterized in that: An annular groove (11) is provided on the inner circumferential surface of the rotating ring (10), annular tooth grooves (12) are provided on the inner circumferential surface of the rotating ring (10) at upper and lower positions of the annular groove (11), and the double-headed gear (92) meshes with the annular tooth grooves (12).

4. The transformer oil level online detection device according to claim 1, characterized in that: The middle portion of the double-headed gear (92) is rotatably connected to the connecting rod (83), and the ends of the two sliders (82) that are away from each other are slidably mounted inside the annular groove (11).

5. The transformer oil level online detection device according to claim 1, characterized in that: A mounting plate (3) is fixedly mounted on the circumferential surface of the detection rod (2) at the upper end of the filter cartridge (62); the upper end surface of the mounting plate (3) is provided with two first slide grooves (31); the upper end surface of the mounting plate (3) is provided with two gear grooves (32) located outside the first slide grooves (31); and tooth grooves (321) are provided on the inner outer surfaces of the two gear grooves (32).

6. A transformer oil level online detection device according to claim 5, characterized in that: A limit support slider (4) is slidably mounted inside the first slide groove (31), a forward and reverse motor (41) is fixedly mounted on one end of the limit support slider (4) away from the upper end, a first gear (42) is rotatably mounted inside the gear groove (32), the upper end of the first gear (42) is fixedly connected to the output shaft of the forward and reverse motor (41), and the lower end of the first gear (42) is fixedly connected to an external cleaning brush (45).

7. The transformer oil level online detection device according to claim 6, characterized in that: A through-going installation slot (33) is provided from the upper end surface to the lower end surface of the installation plate (3); two installation rods (61) are fixedly mounted on the upper end surface of the chassis (6); the upper ends of the two installation rods (61) are slidably mounted inside adjacent installation slots (33) and the upper ends pass through the installation slots (33).

8. The transformer oil level online detection device according to claim 1, characterized in that: An air outlet (25) is provided on the upper circumferential surface of the detection rod (2); a flange (22) is fixedly mounted on the upper circumferential surface of the detection rod (2); a gasket (21) is provided on the circumferential surface of the detection rod (2) at the lower end surface of the flange (22); a detection box (23) is fixedly mounted on the upper end surface of the flange (22); a connecting line (24) is fixedly mounted on the circumferential surface of the detection box (23); two screw grooves (26) are provided on the lower circumferential surface of the detection rod (2); and the slider (82) and the screw (81) are slidably mounted inside the screw grooves (26).

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