A transformer

Abstract

The invention discloses a transformer, which belongs to the technical field of transformers and is used to solve the problem that the insulating oil, after aging and deterioration, produces sludge and sediment, which easily clogs the heat dissipation oil pipe; it comprises a closing component, a dust pushing component and a sampling detection component; the piston is pulled upward inside the sampling tube by an electric push rod, and the insulating oil inside the transformer box will flow into the sampling tube at this time, and the insulating oil in the sampling tube can be detected by making the detector work at this time to obtain the insulating oil sediment content evaluation value, if the sediment content evaluation value is greater than the preset sediment content cleaning evaluation value, the closing component and the dust pushing component work to clean the sediment in the insulating oil, which can prevent the sediment in the insulating oil from clogging the heat dissipation oil pipe, and when the closing component is finished working, the insulating oil inside the transformer box is divided into upper and lower layers by the oil blocking plate, and the servo electric cylinder continues to output, and the dust pushing component is driven to work at this time.

Description

Technical Field

[0001] The invention belongs to the technical field of transformers, and in particular relates to a transformer. Background Art

[0002] Transformer is one of the indispensable main equipments in power plants and substations. According to the cooling method, it can be roughly divided into dry-type transformer, oil-immersed transformer and fluoride transformer. Oil-immersed transformer is mainly composed of iron core, winding, oil tank, oil pillow, insulating bushing, tap changer and gas relay. The winding of oil-immersed transformer is immersed in the insulating oil in the oil tank, and the insulating oil plays a cooling and insulating effect. The cooling method of oil-immersed transformer is to input the high-temperature insulating oil in the transformer box through the heat dissipation oil pipe to the heat dissipation component for heat dissipation, and then input the cooled insulating oil back into the transformer box to cool the internal transformer components. However, the transformer is prone to the following problems when cooling:

[0003] The insulating oil inside the transformer will inevitably age or deteriorate due to long-term work. After aging and deterioration, it is easy to produce sludge and other sediments. If it is not cleaned, it is easy to block the heat dissipation oil pipe, resulting in low heat dissipation efficiency of the transformer or even failure to dissipate heat. This situation will greatly affect the safe operation of the transformer. For this reason, we propose a transformer. Summary of the invention

[0004] The object of the present invention is to provide a transformer to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a transformer, comprising a transformer box, a heat dissipation oil pipe is provided on the side of the transformer box, a support plate is provided inside the transformer box, a transformer group is provided on the upper surface of the support plate, a closing component is provided below the support plate, a dust pushing component is provided at the inner bottom wall of the transformer box, a sampling detection component is provided on the side of the transformer box, and the sampling detection component includes a detector;

[0006] The detector is equipped with a detection module inside, which detects the aging and deterioration degree of the insulating oil, and obtains the insulating oil aging evaluation value and the insulating oil quality evaluation value. The sediment content evaluation value is obtained by comprehensive analysis of the insulating oil aging evaluation value and the insulating oil quality evaluation value.

[0007] By comparing the sediment content evaluation value with the preset sediment content cleaning evaluation value, if the sediment content evaluation value is greater than the preset sediment content cleaning evaluation value, the closing component and the dust pushing component are started to work.

[0008] Preferably, the closing component includes a connecting plate, the liquid inlet of the heat dissipation oil pipe is located between the connecting plate and the support plate, an oil-blocking inclined plate is provided inside the connecting plate, and the upper surface of the oil-blocking inclined plate is an inverted triangle, an oil-blocking plate is provided below the oil-blocking inclined plate, a side slide plate is provided on the side of the oil-blocking plate, a sliding groove is provided inside the connecting plate, and the oil-blocking plate slides in the sliding groove inside the connecting plate through the side slide plate, and connecting grooves are provided inside the oil-blocking inclined plate and the oil-blocking plate.

[0009] Preferably, a movable plate is slidably connected to the inside of the side slide, a sliding rod is provided between the movable plate and the inner wall of the side slide, and the movable plate and the sliding rod are slidably connected, a spring is provided between the movable plate and the inner wall of the side slide, and the sliding rod is located in the middle of the spring, and a servo electric cylinder is provided between the movable plate and the inner wall of the side slide.

[0010] Preferably, the dust pushing assembly includes a sloped bottom plate, and the upper surface of the sloped bottom plate is in the shape of an inverted triangle. A vacuum oil filter is provided at the bottom of the transformer box, and an oil guide pipe is provided between the liquid outlet of the vacuum oil filter and the transformer box.

[0011] Preferably, a sliding rail is provided on the upper surface of the inclined bottom plate, and a dust pushing block is slidably connected to the sliding rail. A second limiting groove is provided on the side wall of the transformer box, and a moving block is slidably connected inside the second limiting groove. A first limiting groove is provided inside the moving plate, and the moving block is slidably connected to the first limiting groove, and a hinged rod is provided between the moving block and the dust pushing block.

[0012] Preferably, the sampling detection assembly includes a sampling tube, and the liquid inlet of the sampling tube is connected to the transformer box, the interior of the sampling tube is slidably connected with a piston, the upper end of the piston is provided with an electric push rod, the side of the sampling tube is provided with a detector, and the side of the transformer box is provided with an automatic medicine replenisher.

[0013] Preferably, the detection process of the insulating oil aging evaluation value is:

[0014] The detector extracts the oil sample from the sampling tube and marks it as a dielectric loss detection oil sample, detects the dielectric loss detection oil sample, obtains the dielectric loss value of the dielectric loss detection oil sample, and obtains the dielectric loss difference ZC by subtracting the dielectric loss value of the dielectric loss detection oil sample from the dielectric loss value of the new insulating oil;

[0015] Extract the gas content of CO and CO2 in the oil sample of the sampling tube and mark it as the specific gas content. Subtract the specific gas content from the initial specific gas content of the transformer oil to obtain the specific gas content difference QZ;

[0016] Determine the acidity of the oil sample in the sampling tube to obtain the acid value of the oil sample, and obtain the acid deviation value SC of the oil sample by subtracting the acid value of the oil sample from the preset standard acid value;

[0017] By photographing the oil sample in the sampling tube, extracting the oil color of the oil sample in the sampling tube, presetting multiple groups of oil color comparison templates, and comparing the oil color of the oil sample in the sampling tube with the preset multiple groups of oil color comparison templates to obtain a matching preset oil color comparison template, extracting the RGB value corresponding to the matching preset oil color comparison template and marking it as the oil sample oil color value YS;

[0018] Using the formula: , and obtain the insulating oil aging evaluation value LHZ, where a1, a2, a3, and a4 are preset insulating oil aging evaluation value weight coefficients.

[0019] Preferably, the detection process of the insulating oil quality evaluation value is:

[0020] The detector extracts the oil sample from the sampling tube and marks the breakdown detection oil sample, uses the breakdown voltage tester to detect the breakdown detection oil sample, gradually increases the voltage at a preset rate until the oil sample breaks down, records the voltage value when the oil sample breaks down, and marks it as the breakdown voltage, compares the breakdown voltage with the standard breakdown voltage of the new insulating oil, and subtracts the standard breakdown voltage of the new insulating oil from the breakdown voltage to obtain the breakdown voltage deviation value CD, and detects the water content in the oil sample and subtracts it from the preset standard water content to obtain the oil sample water content deviation value HC;

[0021] Using the formula: , and obtain the insulating oil quality evaluation value YZ, where b1 and b2 are the preset coefficients of the insulating oil quality evaluation value.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) In this transformer, the piston is pulled upward inside the sampling tube by an electric push rod. At this time, the insulating oil inside the transformer box will flow into the sampling tube. At this time, the insulating oil in the sampling tube can be detected by operating the detector to obtain an insulating oil sediment content evaluation value. If the sediment content evaluation value is greater than a preset sediment content cleaning evaluation value, the closing component and the dust pushing component will work to clean the sediment in the insulating oil, thereby preventing the sediment in the insulating oil from clogging the heat dissipation oil pipe.

[0024] (2) In this transformer, when the side sliding plate is in contact with the inner wall of the sliding groove, the insulating oil inside the transformer box is divided into two layers, the insulating oil in the lower layer of the oil blocking plate, can be filtered by starting the vacuum oil filter. The vacuum oil filter can filter the moisture, sediment and sludge in the insulating oil. The filtered insulating oil will return to the interior of the transformer box through the oil guide pipe. On the one hand, the content of sediment in the insulating oil is reduced, the oil quality is improved, and on the other hand, the probability of blockage of the heat dissipation oil pipe is reduced.

[0025] (3) In this transformer, when the side slide plate is in contact with the inner wall of the sliding groove, the sliding part of the moving block and the first limit groove is located at the downward inclined part of the first limit groove. At this time, the servo electric cylinder continues to output, and the moving plate will squeeze the spring, so that the moving plate slides in the side slide plate. When the moving plate moves, the moving block will move vertically downward under the limiting action of the first limit groove and the second limit groove. When the moving block moves vertically downward, it will push the dust pushing block to move downward in the slide rail through the hinged rod. When the dust pushing block moves downward, it can push the sediment on the upper layer of the inclined bottom plate to the bottom of the inclined bottom plate, which can facilitate the vacuum oil filter to fully filter the sediment in the insulating oil. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0027] Figure 2 It is a schematic diagram of the profile measurement structure of the present invention;

[0028] Figure 3 It is a three-dimensional structural schematic diagram of the transformer group of the present invention;

[0029] Figure 4 It is a schematic diagram of the three-dimensional structure of the oil-blocking inclined plate of the present invention;

[0030] Figure 5 It is a schematic diagram of the exploded structure of the closing assembly of the present invention;

[0031] Figure 6 This is a process diagram of the oil-blocking inclined plate of the present invention from opening to closing;

[0032] Figure 7 It is a schematic diagram of the cross-sectional three-dimensional structure of the connecting plate of the present invention;

[0033] Figure 8 It is a schematic diagram of the three-dimensional structure of the dust pushing assembly of the present invention;

[0034] Fig. 9 It is a schematic diagram of the three-dimensional structure of the oil guide pipe of the present invention;

[0035] Fig.10 For the present invention Fig. 9 A magnified view of the structure at center A;

[0036] Fig.11 For the present invention Fig. 9 A magnified view of the structure at point B.

[0037] In the figure: 10, transformer box; 11, heat dissipation oil pipe; 12, support plate; 13, transformer group; 20, closing component; 21, connecting plate; 22, oil blocking inclined plate; 23, sliding groove; 24, oil blocking plate; 25, side slide plate; 26, moving plate; 27, first limit groove; 28, slide bar; 29, spring; 210, servo cylinder; 30, dust pushing component; 31, inclined bottom plate; 32, slide rail; 33, dust pushing block; 34, moving block; 35, hinged rod; 36, vacuum oil filter; 37, oil guide pipe; 38, second limit groove; 40, sampling detection component; 41, sampling tube; 42, piston; 43, electric push rod; 44, detector; 50, automatic medicine replenisher. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example 1: Please refer to Figure 1-Figure 11 The present invention provides a transformer, including a transformer box 10, a heat dissipation oil pipe 11 is provided on the side of the transformer box 10, and the heat dissipation oil pipe 11 is a part of the transformer heat dissipation component, wherein a plurality of heat sinks are distributed on the circumferential surface of the heat dissipation oil pipe 11, and a support plate 12 is provided inside the transformer box 10, wherein the support plate 12 is provided with a plurality of groups inside the transformer box 10, and is fixed to the transformer box 10 by bolts, wherein a plurality of through grooves are provided inside the upper surface of the support plate 12, which can prevent the sediment in the insulating oil from accumulating on the upper surface of the support plate 12 to a certain extent, and a transformer group 13 is provided on the upper surface of the support plate 12.

[0040] It should be noted that the transformer placed inside the transformer box 10 can be supported and fixed by multiple groups of support plates 12, and the two are fixed by bolts. At the same time, insulating oil is stored inside the transformer box 10, and the insulating oil completely covers the transformer group 13. When the transformer group 13 is dissipating heat, the insulating oil can be reciprocated through the heat dissipation oil pipe 11 by an oil pump. The insulating oil in the heat dissipation oil pipe 11 will be dissipated through the heat sink and the fan. The cooled insulating oil will flow into the transformer box 10 again, and then the transformer group 13 will be dissipated again.

[0041] A closing assembly 20 is provided below the support plate 12, and the closing assembly 20 includes a connecting plate 21. The liquid inlet of the heat dissipation oil pipe 11 is located between the connecting plate 21 and the support plate 12, wherein the connecting plate 21 is fixed to the inner wall of the transformer box 10 by bolts, an oil blocking inclined plate 22 is provided inside the connecting plate 21, and the upper surface of the oil blocking inclined plate 22 is an inverted triangle, an oil blocking plate 24 is provided below the oil blocking inclined plate 22, and a side slide plate 25 is provided on the side of the oil blocking plate 24, a sliding groove 23 is provided inside the connecting plate 21, and the oil blocking plate 24 is provided in the side slide plate 25. The connecting plate 21 slides in the sliding groove 23 inside, and the oil-blocking inclined plate 22 and the oil-blocking plate 24 are both provided with connecting grooves. Under normal circumstances, the connecting grooves of the two are just aligned one by one. The inside of the side slide plate 25 is slidingly connected with a movable plate 26, and a sliding rod 28 is provided between the movable plate 26 and the inner side wall of the side slide plate 25, and the movable plate 26 is slidingly connected to the sliding rod 28. A spring 29 is provided between the movable plate 26 and the inner side wall of the side slide plate 25, and the sliding rod 28 is located in the middle of the spring 29. A servo electric cylinder 210 is provided between the movable plate 26 and the inner side wall of the side slide plate 25.

[0042] It should be noted that the sludge and other sediments produced by aging and deterioration of transformer oil will fall to the bottom of the transformer box 10 through the oil-blocking inclined plate 22 and the through grooves inside the oil-blocking plate 24. The upper surface of the oil-blocking inclined plate 22 is in an inverted triangle, which also facilitates the sediment and sludge to sink to the bottom of the transformer box 10 through the oil-blocking inclined plate 22. When the sediment and sludge content at the bottom of the transformer box 10 increases and is about to affect the connectivity of the heat dissipation oil pipe 11, the servo electric cylinder 210 can be output to push the moving plate 26. At this time, the spring 29 is not compressed. Therefore, when the moving plate 26 moves, it will drive the moving plate 26 and the side slide plate 25 to move in the sliding groove 23. When the side slide plate 25 moves, the oil-blocking plate 24 blocks the connecting groove in the oil-blocking inclined plate 22. When the oil-blocking plate 24 completely blocks the connecting groove in the oil-blocking inclined plate 22, the side sliding plate 25 just abuts against the inner wall of the sliding groove 23. At the same time, when the oil-blocking plate 24 completely blocks the connecting groove in the oil-blocking inclined plate 22, the insulating oil inside the transformer box 10 is just divided into two layers, the upper and lower layers, by the oil-blocking plate 24. The sediment and sludge in the insulating oil are all in the lower layer of the oil-blocking plate 24. This method can prevent the sediment and sludge from being sucked in together at the liquid inlet of the heat dissipation oil pipe 11 between the connecting plate 21 and the supporting plate 12 when the insulating oil is dissipated, causing blockage of the heat dissipation oil pipe 11, thereby affecting the heat dissipation of the transformer group 13, resulting in excessive temperature of the transformer group 13, affecting normal operation.

[0043] A dust pushing assembly 30 is provided at the inner bottom wall of the transformer box 10, and the dust pushing assembly 30 includes a sloped bottom plate 31, wherein the upper surface of the inner bottom wall of the transformer box 10 is the sloped bottom plate 31, wherein the upper surface of the sloped bottom plate 31 is in the shape of an inverted triangle, and a vacuum oil filter 36 is provided at the bottom of the transformer box 10, wherein the liquid inlet of the vacuum oil filter 36 is connected to the sloped bottom plate 31, and an oil guide pipe 37 is provided between the liquid outlet of the vacuum oil filter 36 and the transformer box 10, wherein the oil guide pipe 37 is provided between the oil outlet of the vacuum oil filter 36 and the transformer box 10, and ... The part connected with the transformer box 10 is above the oil-blocking inclined plate 22. A slide rail 32 is provided on the upper surface of the inclined bottom plate 31. A dust pushing block 33 is slidably connected to the slide rail 32. A second limiting groove 38 is provided on the side wall of the transformer box 10. A moving block 34 is slidably connected inside the second limiting groove 38. A first limiting groove 27 is provided inside the moving plate 26. The moving block 34 is slidably connected to the first limiting groove 27. A hinge rod 35 is provided between the moving block 34 and the dust pushing block 33.

[0044] It should be noted that when the side slide plate 25 is in contact with the inner wall of the sliding groove 23, so that the insulating oil inside the transformer box 10 is divided into two layers, the upper and lower layers, by the oil blocking plate 24, the insulating oil in the lower layer of the oil blocking plate 24 can be filtered by starting the vacuum oil filter 36. The vacuum oil filter 36 can filter the water, sediment and sludge in the insulating oil, and the filtered insulating oil will return to the inside of the transformer box 10 through the oil guide pipe 37;

[0045] When the side slide 25 is just in contact with the inner wall of the sliding groove 23, the sliding part of the moving block 34 and the first limiting groove 27 is just located at the downward inclined part of the first limiting groove 27. At this time, the servo electric cylinder 210 continues to output, and the moving plate 26 will squeeze the spring 29, so that the moving plate 26 slides in the side slide 25. When the moving plate 26 moves, the moving block 34 will move vertically downward under the limiting action of the first limiting groove 27 and the second limiting groove 38. When the moving block 34 moves vertically downward, it will push the dust pushing block 33 to move downward in the slide rail 32 through the hinge rod 35. When the dust pushing block 33 moves downward, the sediment on the upper layer of the inclined bottom plate 31 can be pushed to the bottom of the inclined bottom plate 31, which can facilitate the vacuum oil filter 36 to fully filter the sediment in the insulating oil.

[0046] A sampling detection component 40 is provided on the side of the transformer box 10, and the sampling detection component 40 includes a sampling tube 41, and the liquid inlet of the sampling tube 41 is connected to the transformer box 10, a piston 42 is slidably connected inside the sampling tube 41, an electric push rod 43 is provided on the upper end of the piston 42, a detector 44 is provided on the side of the sampling tube 41, and an automatic medicine replenisher 50 is provided on the side of the transformer box 10.

[0047] It should be noted that the insulating oil inside the transformer box 10 can be extracted and tested regularly through the sampling and detection component 40, that is, the piston 42 is pulled upward inside the sampling tube 41 by the electric push rod 43. At this time, the insulating oil inside the transformer box 10 will flow into the sampling tube 41. At this time, the insulating oil in the sampling tube 41 can be tested by operating the detector 44. The degree of aging and deterioration can be estimated through the data of the detection of the insulating oil in the sampling tube 41, and then the content of the sediment inside the transformer oil can be estimated. At the same time, according to the detection data, the corresponding reagent can be supplemented through the automatic reagent replenisher 50. On the one hand, it can slow down the continued generation of sediment in the insulating oil and avoid clogging the heat dissipation oil pipe 11. On the other hand, it can also improve the quality of the insulating oil and make the transformer group 13 work stably.

[0048] Embodiment 2: A detection module is provided inside the detector 44, and the aging and deterioration degree of the insulating oil is detected by the detection module to obtain the insulating oil aging evaluation value and the insulating oil quality evaluation value. The sediment content evaluation value is obtained by comprehensively analyzing the insulating oil aging evaluation value and the insulating oil quality evaluation value. The specific process is as follows:

[0049] Determine the acidity of the oil sample in the sampling tube 41 to obtain the acid value of the oil sample, and obtain the acid deviation value SC of the oil sample by subtracting the acid value of the oil sample from the preset standard acid value. At the same time, detect the water content in the oil sample and subtract it from the preset standard water content to obtain the water content deviation value HC of the oil sample;

[0050] The detector 44 extracts the oil sample from the sampling tube 41 and marks it as a dielectric loss detection oil sample, performs dielectric loss detection on the dielectric loss detection oil sample, obtains a dielectric loss value of the dielectric loss detection oil sample, and obtains a dielectric loss difference ZC by subtracting the dielectric loss value of the dielectric loss detection oil sample from the dielectric loss value of the new insulating oil;

[0051] The gas content of CO and CO2 in the oil sample of the sampling tube 41 is extracted and marked as the specific gas content. The specific gas content is subtracted from the initial specific gas content of the transformer oil to obtain the specific gas content difference QZ, wherein the larger the specific gas content difference is, the deeper the degree of thermal decomposition or oxidation of the insulating oil is;

[0052] The detector 44 extracts the oil sample from the sampling tube 41 and marks the breakdown detection oil sample, and uses a breakdown voltage tester to test the breakdown detection oil sample, gradually increases the voltage at a preset rate until the oil sample breaks down, records the voltage value when the oil sample breaks down, and marks it as the breakdown voltage, compares the breakdown voltage with the standard breakdown voltage of the new insulating oil, and makes a difference between the standard breakdown voltage of the new insulating oil and the breakdown voltage to obtain a breakdown voltage deviation value CD, wherein the larger the breakdown voltage deviation value is, the closer the oil quality is to deterioration, or even deterioration;

[0053] By photographing the oil sample in the sampling tube 41, extracting the oil color of the oil sample in the sampling tube 41, presetting multiple groups of oil color comparison templates, and comparing the oil color of the oil sample in the sampling tube 41 with the preset multiple groups of oil color comparison templates to obtain a matching preset oil color comparison template, extracting the RGB value corresponding to the matching preset oil color comparison template and marking it as the oil sample oil color value YS;

[0054] Using the formula: , and obtain the insulating oil aging evaluation value LHZ; where a1, a2, a3, and a4 are preset insulating oil aging evaluation value weight coefficients;

[0055] Using the formula: , obtain the insulating oil quality evaluation value YZ, where b1 and b2 are the preset coefficients of the insulating oil quality evaluation value;

[0056] By substituting the oil aging evaluation value LHZ and the insulating oil quality evaluation value YZ into the preset formula: , and obtain the sediment content evaluation value CDW, wherein t1 and t2 are preset sediment content weight factors. By comparing the sediment content evaluation value CDW with the preset sediment cleaning content evaluation value, if the sediment content evaluation value CDW is greater than the preset sediment content cleaning evaluation value, the closing component 20 and the dust pushing component 30 are started to work, and the sediment inside the transformer box 10 is filtered. At the same time, according to the addition data of the antioxidant, detergent, and pour point depressant corresponding to the historical sediment content evaluation value, a mapping relationship between the sediment content evaluation value CDW and the antioxidant, detergent, and pour point depressant is established, and the content of the antioxidant, detergent, and pour point depressant that should be added is found according to the sediment content evaluation value CDW, and the corresponding reagents are added through the automatic reagent replenisher 50 to improve the oil quality of the insulating oil.

[0057] The working principle and use process of the present invention: when the device is used, the insulating oil inside the transformer box 10 can be extracted and tested by the sampling detection component 40 at regular intervals, that is, the piston 42 is pulled upward inside the sampling tube 41 by the electric push rod 43, and the insulating oil inside the transformer box 10 will flow into the sampling tube 41. The detector 44 is provided with a detection module inside, and the aging and deterioration degree of the insulating oil are detected by the detection module to obtain the insulating oil aging evaluation value and the insulating oil quality evaluation value. The sediment content evaluation value is obtained by comprehensively analyzing the insulating oil aging evaluation value and the insulating oil quality evaluation value. The sediment content evaluation value CDW is compared with the preset sediment cleaning content evaluation value. If the sediment content evaluation value CDW is greater than the preset sediment content cleaning evaluation value, the closing component 20 and the dust pushing component 30 are started to work;

[0058] When the closing component 20 is working, the servo electric cylinder 210 outputs and pushes the moving plate 26. At this time, the spring 29 is not compressed. Therefore, when the moving plate 26 moves, it will drive the moving plate 26 and the side slide plate 25 to move together in the sliding groove 23. When the side slide plate 25 moves, the oil blocking plate 24 will block the connecting groove in the oil blocking inclined plate 22. When the oil blocking plate 24 completely blocks the connecting groove in the oil blocking inclined plate 22, the side slide plate 25 just abuts against the inner side wall of the sliding groove 23. At the same time, when the oil blocking plate 24 completely blocks the connecting groove in the oil blocking inclined plate 22, the insulating oil inside the transformer box 10 is just divided into two layers, the upper and lower layers, by the oil blocking plate 24, wherein the sediment and sludge in the insulating oil are all in the lower layer of the oil blocking plate 24.

[0059] Then, the insulating oil under the oil blocking plate 24 is filtered by starting the vacuum oil filter 36. The vacuum oil filter 36 can filter the water, sediment and sludge in the insulating oil. The filtered insulating oil will pass through the oil guide pipe 37 and return to the inside of the transformer box 10.

[0060] The dust pushing assembly 30 works in the following way: when the side slide plate 25 is in contact with the inner wall of the sliding groove 23, the sliding part of the moving block 34 and the first limiting groove 27 is located at the downwardly inclined part of the first limiting groove 27. At this time, the servo electric cylinder 210 continues to output, and the moving plate 26 squeezes the spring 29, so that the moving plate 26 slides in the side slide plate 25. When the moving plate 26 moves, the moving block 34 moves vertically downward under the limiting action of the first limiting groove 27 and the second limiting groove 38. When the moving block 34 moves vertically downward, it pushes the dust pushing block 33 to move downward in the slide rail 32 through the hinge rod 35. When the dust pushing block 33 moves downward, the sediment on the upper layer of the inclined bottom plate 31 can be pushed to the bottom of the inclined bottom plate 31, which can facilitate the vacuum oil filter 36 to fully filter the sediment in the insulating oil.

[0061] After filtering the sediment, a mapping relationship between the sediment content evaluation value CDW and the antioxidant, detergent and pour point depressant is established based on the addition data of the antioxidant, detergent and pour point depressant corresponding to the historical sediment content evaluation value. The content of the antioxidant, detergent and pour point depressant that should be added is found out based on the sediment content evaluation value CDW, and the corresponding chemicals are added through the automatic chemical replenisher 50 to improve the oil quality of the insulating oil.

[0062] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A transformer, comprising a transformer box (10), wherein a heat dissipation oil pipe (11) is provided on a side of the transformer box (10), Features: A support plate (12) is provided inside the transformer box (10), a transformer group (13) is provided on the upper surface of the support plate (12), a closing component (20) is provided below the support plate (12), a dust pushing component (30) is provided at the inner bottom wall of the transformer box (10), and a sampling detection component (40) is provided on the side of the transformer box (10), and the sampling detection component (40) includes a detector (44); The detector (44) is provided with a detection module inside, and the detection module detects the aging and deterioration degree of the insulating oil to obtain an insulating oil aging evaluation value and an insulating oil quality evaluation value, and obtains a sediment content evaluation value by comprehensively analyzing the insulating oil aging evaluation value and the insulating oil quality evaluation value; By comparing the sediment content evaluation value with the preset sediment content cleaning evaluation value, if the sediment content evaluation value is greater than the preset sediment content cleaning evaluation value, the closing component (20) and the dust pushing component (30) are started to work; The closing component (20) comprises a connecting plate (21), the liquid inlet of the heat dissipation oil pipe (11) is located between the connecting plate (21) and the supporting plate (12), an oil blocking inclined plate (22) is provided inside the connecting plate (21), and the upper surface of the oil blocking inclined plate (22) is in the shape of an inverted triangle, an oil blocking plate (24) is provided below the oil blocking inclined plate (22), a side slide plate (25) is provided on the side of the oil blocking plate (24), a sliding groove (23) is provided inside the connecting plate (21), and the oil blocking plate (24) slides in the sliding groove (23) inside the connecting plate (21) through the side slide plate (25), and the oil blocking inclined plate (22) and the oil blocking plate (24) are both provided with a connecting groove inside. A moving plate (26) is slidably connected inside the side slide plate (25), a sliding rod (28) is provided between the moving plate (26) and the inner side wall of the side slide plate (25), and the moving plate (26) and the sliding rod (28) are slidably connected, a spring (29) is provided between the moving plate (26) and the inner side wall of the side slide plate (25), and the sliding rod (28) is located in the middle of the spring (29), and a servo electric cylinder (210) is provided between the moving plate (26) and the inner side wall of the side slide plate (25); The dust pushing assembly (30) comprises a sloped bottom plate (31), and the upper surface of the sloped bottom plate (31) is in the shape of an inverted triangle. A vacuum oil filter (36) is provided at the bottom of the transformer box (10), and an oil guide pipe (37) is provided between the liquid outlet of the vacuum oil filter (36) and the transformer box (10); The upper surface of the inclined bottom plate (31) is provided with a slide rail (32), and the slide rail (32) is slidably connected to a dust pushing block (33). The side wall of the transformer box (10) is provided with a second limiting groove (38), and the interior of the second limiting groove (38) is slidably connected to a moving block (34). The interior of the moving plate (26) is provided with a first limiting groove (27), and the moving block (34) is slidably connected to the first limiting groove (27), and a hinged rod (35) is provided between the moving block (34) and the dust pushing block (33).

2. A transformer according to claim 1, Features: The sampling detection assembly (40) comprises a sampling tube (41), wherein a liquid inlet of the sampling tube (41) is connected to a transformer box (10), a piston (42) is slidably connected inside the sampling tube (41), an electric push rod (43) is provided at the upper end of the piston (42), a detector (44) is provided on the side of the sampling tube (41), and an automatic medicine replenisher (50) is provided on the side of the transformer box (10).

3. A transformer according to claim 1, Features: The detection process of the insulating oil aging evaluation value is as follows: The detector (44) extracts the oil sample from the sampling tube (41) and marks it as a dielectric loss detection oil sample, performs a dielectric loss detection on the dielectric loss detection oil sample to obtain a dielectric loss value of the dielectric loss detection oil sample, and obtains a dielectric loss difference ZC by subtracting the dielectric loss value of the dielectric loss detection oil sample from the dielectric loss value of the new insulating oil; Extracting the gas content of CO and CO2 in the oil sample of the sampling tube (41) and marking it as a specific gas content, and obtaining a specific gas content difference QZ by subtracting the specific gas content from the initial specific gas content of the transformer oil; Determine the acidity of the oil sample in the sampling tube (41) to obtain the acid value of the oil sample, and obtain the acid deviation value SC of the oil sample by subtracting the acid value of the oil sample from a preset standard acid value; The oil sample in the sampling tube (41) is photographed to extract the oil color of the oil sample in the sampling tube (41), multiple groups of oil color comparison templates are preset, the oil color of the oil sample in the sampling tube (41) is compared with the multiple groups of preset oil color comparison templates to obtain a matching preset oil color comparison template, and the RGB value corresponding to the matching preset oil color comparison template is extracted and marked as the oil sample oil color value YS; The insulating oil aging evaluation value LHZ is obtained using the formula: LHZ=ZC×a1+QZ×a2+SC×a3+YS×a4, where a1, a2, a3, and a4 are preset insulating oil aging evaluation value weight coefficients.

4. A transformer according to claim 1, Features: The detection process of the insulating oil quality evaluation value is as follows: The detector (44) extracts the oil sample from the sampling tube (41) and marks the breakdown detection oil sample, uses a breakdown voltage tester to detect the breakdown detection oil sample, gradually increases the voltage at a preset rate until the oil sample breaks down, records the voltage value when the oil sample breaks down and marks it as the breakdown voltage, compares the breakdown voltage with the standard breakdown voltage of the new insulating oil, subtracts the standard breakdown voltage of the new insulating oil from the breakdown voltage to obtain a breakdown voltage deviation value CD, and detects the water content in the oil sample and subtracts it from the preset standard water content to obtain an oil sample water content deviation value HC; The insulating oil quality evaluation value YZ is obtained using the formula: YZ=HC×b1+CD×b2, where b1 and b2 are preset coefficients of the insulating oil quality evaluation value.

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