An online monitoring device for transformer oil based on ultrasonic soundprint

Abstract

The invention discloses an online transformer oil monitoring device based on ultrasonic soundprint, comprising three parts: a main unit part, a probe part and a transmission line part. The probe part is composed of a linear track with a sealing structure and a movable probe structure installed in the linear track, and the sealing structure is composed of a combination of independent sealing modules at multiple points. A pressure-bearing part with a ball is arranged on the sealing structure, and an outer push rod is arranged on the movable probe structure, a driving gear is arranged on the movable probe structure, and a guide rack is arranged on the linear track. A connecting wire fixing clamp structure with switching point clamping is arranged on the movable probe structure, and the connecting part between the connecting wire and the movable probe structure is protected by the connecting wire fixing clamp structure. In the invention, multi-point monitoring of transformer oil is performed by a movable single probe structure, so as to achieve the effect of single probe covering monitoring.

Description

Technical Field

[0001] The invention relates to the technical field of transformers, and in particular to an online transformer oil monitoring device based on ultrasonic soundprint. Background Art

[0002] Usually, the detection of transformer oil is mainly completed through manual sampling and regular laboratory analysis, which is time-consuming and laborious, and has many interference factors. It needs to be equipped with a variety of detection instruments. At the same time, it is impossible to detect the potential defects of transformer oil and transformer in time, and the equipment is subject to sudden risks. In addition, the aging characteristic indicators and diagnostic methods of transformer oil-paper insulation are single, the degree of polymerization requires power outage testing, furfural is greatly affected by the environment, and it cannot sensitively capture early aging symptoms. There is a lack of solid insulation online monitoring technology, and the aging status assessment system is missing. Therefore, using voiceprints for real-time transformer oil status monitoring has become a more advantageous monitoring method. It uses ultrasonic voiceprint technology to analyze the relationship between transformer oil ultrasonic voiceprint characteristics and transformer status parameters, and studies the correlation mechanism between oil characteristic parameters and ultrasonic voiceprint information during rapid dynamic changes in the transformer. Online monitoring of transformer oil is more conducive to timely discovery of hidden dangers and replacement of transformer oil.

[0003] However, in order to achieve a comprehensive monitoring effect, current ultrasonic voiceprint monitoring devices usually require the installation of multi-point probes, which results in higher hardware equipment costs and higher requirements for real-time computing software performance, which is not conducive to promotion. Summary of the invention

[0004] The purpose of the present invention is to provide an online transformer oil monitoring device based on ultrasonic soundprint, so as to achieve the purpose of low-cost online monitoring of covered transformer oil and solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: an online transformer oil monitoring device based on ultrasonic soundprint, comprising a host part, a probe part and a transmission line part, wherein the host and the probe are connected through a transmission line, the host part adopts a box structure, the monitoring host is installed through the host box, and a normally closed protective cover is provided on the host box, and a communication module and an alarm module are provided in the monitoring host;

[0006] The transmission line part includes a connecting line connected to the monitoring host and a reel, and the reel is provided with a winding shaft, and the winding shaft is connected to a vortex spring, and the connecting line is automatically retracted and released through the winding shaft;

[0007] The probe part is composed of a linear track with a sealing structure and a movable probe structure installed in the linear track, and the sealing structure is composed of a combination of independent sealing modules at multiple points, and the movable probe structure is connected to the connecting line, a pressure-bearing part with a ball is provided on the sealing structure, and an external push rod is provided on the movable probe structure, and the independent sealing modules in the sealing structure are opened one by one by the external push rod, a driving gear is provided on the movable probe structure, and a guide rack is provided on the linear track, and the movable probe structure is driven to move along the linear track by the rotation of the driving gear on the guide rack, and a connecting line fixing clamp structure with a switching point clamp is provided on the movable probe structure, and the connecting part between the connecting line and the movable probe structure is protected by the connecting line fixing clamp structure.

[0008] Preferably, the main box is mounted on a mounting base, and the mounting base is mounted on a transformer, a waterproof ring is provided on the protective cover to be connected to a waterproof groove on the main box, and a lock is provided on the protective cover.

[0009] Preferably, the winding reel adopts a disc structure and is installed in the center of the winding reel so as to rotate around a reel. The winding reel is installed on one side of the main box through a bracket, and a cable cavity is provided in the winding reel. Through holes are provided on both sides of the winding reel for connecting wires to enter and exit. The spiral spring is installed on the top of the winding reel, and the center of the spiral spring is connected to the winding reel.

[0010] Preferably, a sealing rubber pad is provided at the bottom of the linear track, and the linear track is sealed and installed in the linear groove on the transformer oil tank through the sealing rubber pad. The sealing structure is arranged on the top surface of the linear track, and the sealing structure is composed of independent sealing modules arranged in a linear manner, and adjacent independent sealing modules are in close contact and connection.

[0011] Preferably, the independent sealing module includes a closing plate slidably mounted on a linear track, and a sealing ring is provided on the closing plate, an end block is fixedly connected to the closing plate, and a closing spring is fixedly connected to the end block.

[0012] Preferably, the independent sealing module includes two symmetrically arranged closing plates, and the sealing ring is arranged at the position where the closing plates contact each other, the end block is connected to the tail of the closing plate, the closing spring is connected between the end block and the linear track, the pressure-bearing part is installed on the top surface of the closing plate, and the pressure-bearing part adopts a broken line rod with raised ends, and the ball is installed on the pressure-bearing part through a spherical pair arrangement.

[0013] Preferably, the movable probe structure includes a movable seat slidably installed in a linear track, and a connector is provided on the movable seat for installing a connecting line, a transceiver probe is fixedly connected to the bottom of the movable seat for transmitting and receiving ultrasonic waves, and the outer push rod is an arc rod.

[0014] Preferably, the connecting wire fixing clamp structure includes a limit seat fixedly connected to the movable probe structure, and the limit seat is provided with a wire threading groove, and a rotating shaft is rotatably installed on the limit seat, a wire clamp and a polygonal end are fixedly connected to the rotating shaft, and a sliding sleeve is slidably installed on the polygonal end, a downward pressure spring and a positioning rod are connected to the sliding sleeve, and a positioning sleeve is provided on the limit seat.

[0015] Preferably, at least six wire clamps are arranged in a ring shape, and protective pads are provided at the ends of the wire clamps. The number of the positioning rods is the same as that of the wire clamps, and the downward pressure spring is connected between the sliding sleeve and the multilateral end.

[0016] A hanging ring is provided on the connecting line, and a counterweight is installed on the hanging ring through a hanging rope, and the counterweight is slidably installed on a guide seat, the guide seat is connected to the connecting line fixing clamp structure, and the hanging ring is located between the connecting line fixing clamp structure and the movable probe structure.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The monitoring host and the movable probe structure of the present invention are connected through a connecting wire, so that the ultrasonic voiceprint data is transmitted to the monitoring host. In order to avoid the exposed length of the connecting wire being too long and being hung on the transformer, a winding reel is used to organize and recycle the connecting wire. The elastic force of the spiral spring acts on the winding shaft, which can drive the winding shaft to rotate and collect the connecting wire in the winding reel. When the connecting wire is subjected to force, it can also be pulled out.

[0019] 2. In the present invention, multi-point monitoring of transformer oil is performed through a movable single-probe structure to achieve the effect of single-probe covering monitoring. The movable probe structure is guided and installed through a linear track. The linear track is directly installed in the linear groove of the transformer. The movable probe structure can be extended into the oil tank of the transformer. At the same time, in order to avoid the direct contact of the transformer oil with the external air environment caused by the existence of the slide groove, the present invention also has a sealing structure on the linear track. The sealing structure is composed of multiple independent sealing modules. The movable probe structure moves to open the independent sealing module, and only one independent sealing module is fully opened at a time, which makes room for detection while ensuring the sealing of other positions.

[0020] 3. The movable probe structure of the present invention can pull the connecting line when it moves in a straight line. Considering that using a connector to directly pull the connecting line may easily cause damage and breakage to the connection position between the two, the present invention uses a connecting line fixing clamp structure as a pulling point. When the movable seat moves, the connecting line is pulled by the wire clamp, which will only damage the surface of the connecting line. At the same time, the damage can be reduced by a protective pad, and the clamping point of the wire clamp can be changed to avoid damage to the connecting line caused by long-term clamping. The pulled connecting line is affected by the counterweight block and is pulled down along the direction of the guide seat, thereby bending, ensuring that the connecting line can move smoothly to change the clamping point. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the first overall schematic diagram of the structure of the present invention.

[0022] Figure 2 It is a second overall schematic diagram of the structure of the present invention.

[0023] Figure 3 Schematic diagram of the guide rail structure of the present invention.

[0024] Figure 4 for Figure 3 A magnified schematic diagram of area A in the middle.

[0025] Figure 5 It is a schematic diagram of the mobile probe structure of the present invention.

[0026] Figure 6 It is a bottom schematic diagram of the guide rail structure of the present invention.

[0027] Figure 7 It is a partial schematic diagram of the probe connection structure of the present invention.

[0028] Figure 8 It is a schematic diagram of a closed module of the present invention.

[0029] Fig. 9 It is a schematic diagram of the connection line positioning structure of the present invention.

[0030] Fig.10 It is a schematic diagram of the positioning clip structure of the present invention.

[0031] Fig.11 It is a schematic diagram of the winding reel structure of the present invention.

[0032] Fig.12 Schematic diagram of the host structure of the present invention.

[0033] In the figure: main case 1, monitoring host 2, protective cover 3, mounting seat 4, connecting line 5, linear rail 6, sealing pad 7, movable seat 8, connector 9, sending and receiving probe 10, driving gear 11, guide rack 12, closing plate 13, sealing ring 14, end block 15, closing spring 16, pressure piece 17, ball 18, outer push rod 19, winding disk 20, winding shaft 21, volute spring 22, limit seat 23, wire threading groove 24, rotating shaft 25, wire clamp 26, pad 27, multilateral end 28, sliding sleeve 29, downward pressure spring 30, positioning rod 31, positioning sleeve 32, hanging ring 33, hanging rope 34, counterweight block 35, guide seat 36. DETAILED DESCRIPTION

[0034] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment. It should be noted that 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 making creative work are within the scope of protection of the present invention.

[0035] See also Figures 1 to 12 The present invention provides a technical solution: an online transformer oil monitoring device based on ultrasonic soundprint, comprising a host part, a probe part and a transmission line part. The host and the probe are connected through a transmission line. The host part adopts a box structure, and the monitoring host 2 is installed through a host box 1. A normally closed protective cover 3 is provided on the host box 1, and a communication module and an alarm module are provided in the monitoring host 2.

[0036] The transmission line part includes a connecting line 5 connected to the monitoring host 2 and a reel 20, and the reel 20 is provided with a winding shaft 21, and the winding shaft 21 is connected to a volute spring 22, and the connecting line 5 is automatically retracted and released through the winding shaft 21;

[0037] The probe part is composed of a linear rail 6 with a sealing structure and a movable probe structure installed in the linear rail 6, and the sealing structure is composed of a combination of independent sealing modules at multiple points, and the movable probe structure is connected to the connecting line 5, and a pressure-bearing part 17 with a ball 18 is provided on the sealing structure, and an external push rod 19 is provided on the movable probe structure, and the independent sealing modules in the sealing structure are opened one by one by the external push rod 19, a driving gear 11 is provided on the movable probe structure, and a guide rack 12 is provided on the linear rail 6, and the driving gear 11 is rotated on the guide rack 12 to drive the movable probe structure to move along the linear rail 6, and a connecting line fixing clamp structure with a switching point clamping is provided on the movable probe structure, and the connecting part of the connecting line 5 and the movable probe structure is protected by the connecting line fixing clamp structure.

[0038] The main box 1 is mounted on the mounting base 4, and the mounting base 4 is mounted on the transformer. A waterproof ring is provided on the protective cover 3 to be connected with the waterproof groove on the main box 1, and a lock is provided on the protective cover 3.

[0039] The monitoring device of the present invention processes ultrasonic data by a monitoring host 2, and the monitoring host 2 is installed on a host box 1. Under normal circumstances, the monitoring host 2 directly transmits the processed data to the cloud and the mobile terminal through a communication module for online monitoring. The protective cover 3 of the host box 1 can also be opened to perform direct observation through the monitoring host 2.

[0040] The winding drum 20 adopts a disc structure, and is rotatably installed around a winding shaft 21 at the center of the winding drum 20. The winding drum 20 is installed on one side of the main chassis 1 through a bracket, and a cable cavity is provided in the winding drum 20, and through holes are provided on both sides of the winding drum 20 for the connecting wire 5 to enter and exit. A spiral spring 22 is installed on the top of the winding drum 20, and the center of the spiral spring 22 is connected to the winding shaft 21.

[0041] The monitoring host 2 and the movable probe structure are connected via a connecting line 5, thereby transmitting the ultrasonic voiceprint data to the monitoring host 2. In order to avoid the exposed length of the connecting line 5 being too long and being hung on the transformer, the present invention adopts a winding reel 20 to organize and recycle the connecting line 5. The elastic force of the spiral spring 22 acts on the winding shaft 21, which can drive the winding shaft 21 to rotate and reel the connecting line 5 into the winding reel 20. When the connecting line 5 is subjected to force, it can also be pulled out.

[0042] A sealing rubber pad 7 is provided at the bottom of the linear track 6, and the linear track 6 is sealed and installed in the linear groove on the transformer oil tank through the sealing rubber pad 7. The sealing structure is arranged on the top surface of the linear track 6, and the sealing structure is composed of independent sealing modules arranged in a linear manner, and the adjacent independent sealing modules are in close contact and connection.

[0043] The present invention performs multi-point monitoring of transformer oil through a movable single probe structure to achieve a single probe covering monitoring effect. The movable probe structure is guided and installed through a linear track 6, and the linear track 6 is directly installed in the linear groove of the transformer. The movable probe structure can extend into the oil tank of the transformer.

[0044] The independent sealing module includes a closing plate 13 slidably mounted on the linear track 6 , and a sealing ring 14 is arranged on the closing plate 13 , an end block 15 is fixedly connected to the closing plate 13 , and a closing spring 16 is fixedly connected to the end block 15 .

[0045] The movable probe structure needs to move on the linear track 6, so a slide groove is provided on the linear track 6. In order to prevent the transformer oil from directly contacting the external air environment due to the presence of the slide groove, the present invention also provides a sealing structure on the linear track 6. The sealing structure is composed of multiple independent sealing modules. The movable probe structure moves to open the independent sealing module, and only one independent sealing module is fully opened at a time, thereby freeing up the detection space while ensuring the sealing of other positions.

[0046] The independent sealing module includes two symmetrically arranged closing plates 13, and the sealing ring 14 is arranged at the position where the closing plates 13 contact each other, the end block 15 is connected to the tail of the closing plate 13, the closing spring 16 is connected between the end block 15 and the linear track 6, and the pressure-bearing member 17 is installed on the top surface of the closing plate 13, and the pressure-bearing member 17 adopts a broken line rod with raised ends, and the ball 18 is installed on the pressure-bearing member 17 through a spherical pair arrangement.

[0047] Through the action of the closing spring 16, the closing plate 13 is driven to move inward, and the two closing plates 13 contact each other, and a sealing effect is achieved through the sealing ring 14. When the movable probe structure moves, the outer push rod 19 thereon can contact the pressure-bearing part 17, pushing the closing plate 13 outward, thereby making room for detection.

[0048] The movable probe structure includes a movable seat 8 slidably installed in a linear track 6, and a connector 9 is provided on the movable seat 8 for installing a connecting line 5. A transceiver probe 10 is fixedly connected to the bottom of the movable seat 8 for ultrasonic transmission and reception, and an outer push rod 19 is an arc rod.

[0049] The movable probe structure is based on the movable seat 8, and the driving gear 11 thereon is connected to the guide rack 12 to perform linear drive of the movable seat 8. The transceiver probe 10 at the bottom of the movable seat 8 completes the monitoring and transmits data through the connector 9 and the connecting line 5. The movable seat 8 can open the sealing structure on the linear track 6 through the external push rod 19.

[0050] The connecting wire fixing clamp structure includes a limit seat 23 fixedly connected to the movable probe structure, and the limit seat 23 is provided with a wire threading groove 24, and a rotating shaft 25 is rotatably installed on the limit seat 23, a wire clamp 26 and a polygonal end 28 are fixedly connected to the rotating shaft 25, and a sliding sleeve 29 is slidably installed on the polygonal end 28, a downward pressure spring 30 and a positioning rod 31 are connected to the sliding sleeve 29, and a positioning sleeve 32 is provided on the limit seat 23, at least six wire clamps 26 are arranged in a ring, and a protective pad 27 is provided at the end of the wire clamp 26, the number of positioning rods 31 is the same as that of the wire clamp 26, and the downward pressure spring 30 is connected between the sliding sleeve 29 and the polygonal end 28.

[0051] When the movable probe structure moves in a straight line, it can pull the connecting wire 5. The connecting wire 5 is restricted by the winding disk 20 and can always maintain a suitable length, effectively avoiding the hooking of the connecting wire. Considering that the use of the connector 9 to directly pull the connecting wire 5 is likely to cause damage and breakage at the connection position between the two, the present invention uses a connecting wire fixing clamp structure as a pulling point;

[0052] The sliding sleeve 29 is pressed down by the downward pressure spring 30, and the positioning rod 31 of the sliding sleeve 29 is connected to the positioning sleeve 32, so that the multilateral end 28 and the rotating shaft 25 can be fixed to prevent rotation. At this time, the wire clamping piece 26 is fixed, and the two wire clamping pieces 26 can be clamped on the connecting line 5 from both sides, and the limiting seat 23 is connected to the movable seat 8. When the movable seat 8 moves, the connecting line 5 is pulled by the wire clamping piece 26, which only damages the surface of the connecting line 5. At the same time, the damage can be reduced by the protective pad 27, and the clamping point of the wire clamping piece 26 can be changed. By lifting the sliding sleeve 29, the positioning rod 31 is disengaged from the positioning sleeve 32, and the wire clamping piece 26 is rotated by the sliding sleeve 29 to pull out a part of the connecting line 5 and then fix it, thereby changing the clamping point to avoid long-term clamping that will cause damage to the connecting line 5. The connecting line 5 has a certain excess length and is wound up by the winding reel 20.

[0053] A hanging ring 33 is provided on the connecting line 5, and a counterweight block 35 is installed on the hanging ring 33 through a hanging rope 34, and the counterweight block 35 is slidably installed on a guide seat 36, the guide seat 36 is connected to the connecting line fixing clamp structure, and the hanging ring 33 is located between the connecting line fixing clamp structure and the movable probe structure.

[0054] When the clamping point is changed, the pulled-out connecting wire 5 is acted upon by the counterweight 35 and is pulled down along the direction of the guide seat 36 , thereby generating a bend, thereby ensuring that the connecting wire 5 can move smoothly and change the clamping point.

[0055] When the present invention is in use: first, the monitoring device of the present invention processes ultrasonic data by the monitoring host 2, and the monitoring host 2 is installed on the main box 1. Under normal circumstances, the monitoring host 2 directly transmits the processed data to the cloud and the mobile terminal through the communication module for online monitoring. The protective cover 3 of the main box 1 can also be opened to directly observe through the monitoring host 2. The monitoring host 2 and the movable probe structure are connected through the connecting line 5, so that the ultrasonic soundprint data is transmitted to the monitoring host 2. In order to avoid the exposed length of the connecting line 5 being too long and hung on the transformer, the present invention adopts a winding reel 20 to organize and recycle the connecting line 5. The elastic force of the vortex spring 22 acts on the winding shaft 21, which can drive the winding shaft 21 to rotate, and the connecting line 5 is wound in the winding reel 20. When the connecting line 5 is stressed, it can also be pulled out. The present invention uses a movable single probe structure to perform multi-point monitoring of the transformer oil, so as to achieve the effect of single probe covering monitoring. The movable probe structure is guided and installed through a linear track 6. The linear track 6 is directly installed in the linear groove of the transformer. The movable probe structure can extend into the oil tank of the transformer. The movable probe structure needs to move on the linear track 6, so a slide groove is provided on the linear track 6. In order to avoid the existence of the slide groove causing the transformer oil to directly contact the external air environment, the present invention also provides a sealing structure on the linear track 6. The sealing structure is composed of a plurality of independent sealing modules. The movable probe structure moves to open the independent sealing module, and only one of them can be opened at a time. The independent sealing module is fully opened to make room for detection while ensuring the sealing of other positions. The closing plate 13 is driven to move inward through the action of the closing spring 16. The two closing plates 13 contact each other and achieve a sealing effect through the sealing ring 14. When the movable probe structure moves, the outer push rod 19 thereon can contact the pressure-bearing part 17 to push the closing plate 13 outward, thereby making room for detection. The movable probe structure is based on the movable seat 8. The driving gear 11 thereon is connected to the guide rack 12 to perform linear drive of the movable seat 8. The transceiver probe 10 at the bottom of the movable seat 8 completes the monitoring and transmits data through the connector 9 and the connecting line 5. The movable seat 8 can open the sealing structure on the linear track 6 through the outer push rod 19. When the needle structure moves in a straight line, it can pull the connecting line 5. The connecting line 5 is restricted by the winding disk 20 and can always maintain a suitable length, effectively avoiding the hooking of the connecting line. Considering that the use of the connector 9 to directly pull the connecting line 5 is likely to cause damage and breakage of the connection position between the two, the present invention adopts a connecting line fixing clamp structure as a pulling point, and presses the sliding sleeve 29 down by pressing the spring 30. The positioning rod 31 of the sliding sleeve 29 is connected to the positioning sleeve 32, and the multi-sided terminal 28 and the rotating shaft 25 can be fixed to prevent rotation. At this time, the wire clamping piece 26 is fixed, and the two wire clamping pieces 26 can be clamped on the connecting line 5 from both sides, and the limiting seat 23 is connected to the movable seat 8. When the movable seat 8 moves, the connecting line 5 is pulled by the wire clamping piece 26.Only the surface of the connecting line 5 will be damaged, and the damage can be reduced by the protective pad 27. The clamping point of the wire clamp 26 can be changed. By lifting the sliding sleeve 29, the positioning rod 31 is disengaged from the positioning sleeve 32. The wire clamp 26 is rotated by the sliding sleeve 29 to pull out a part of the connecting line 5 and then fix it, thereby changing the clamping point to avoid damage to the connecting line 5 caused by long-term clamping. The connecting line 5 has a certain excess length and is wound by the winding disk 20. When the clamping point is changed, the pulled connecting line 5 is affected by the counterweight block 35 and is pulled down along the direction of the guide seat 36, thereby bending, ensuring that the connecting line 5 can move smoothly to change the clamping point.

[0056] The above-mentioned embodiments are only preferred embodiments of the present invention, and cannot be used to limit the scope of protection of the present invention. Various changes made by ordinary technicians in this field based on the above-mentioned concepts without creative work all fall within the scope of protection of the present invention.

Claims

1. A transformer oil online monitoring device based on ultrasonic soundprint, comprising a host part, a probe part and a transmission line part, characterized in that: The host and the probe are connected via a transmission line, the host part adopts a box-type structure, the monitoring host (2) is installed via the host box (1), a normally closed protective cover (3) is provided on the host box (1), and a communication module and an alarm module are provided in the monitoring host (2); The transmission line portion comprises a connection line (5) connected to the monitoring host (2) and a reel (20), wherein the reel (20) is provided with a winding shaft (21), and a spiral spring (22) is connected to the winding shaft (21), and the connection line (5) is automatically retracted and released via the winding shaft (21); The probe part is composed of a linear track (6) with a sealing structure and a movable probe structure installed in the linear track (6), and the sealing structure is composed of a combination of independent sealing modules at multiple points, and the movable probe structure is connected to the connecting line (5), and a pressure-bearing part (17) with a ball (18) is provided on the sealing structure, and an external push rod (19) is provided on the movable probe structure, and the independent sealing modules in the sealing structure are opened one by one by the external push rod (19), and a driving gear (11) is provided on the movable probe structure, and a guide rack (12) is provided on the linear track (6), and the driving gear (11) is rotated on the guide rack (12) to drive the movable probe structure to move along the linear track (6), and a connecting line fixing clamp structure with a switching point clamping is provided on the movable probe structure, and the connecting part between the connecting line (5) and the movable probe structure is protected by the connecting line fixing clamp structure; The independent sealing module comprises a closing plate (13) slidably mounted on a linear track (6), and a sealing ring (14) is arranged on the closing plate (13), an end block (15) is fixedly connected to the closing plate (13), and a closing spring (16) is fixedly connected to the end block (15), the independent sealing module comprises two symmetrically arranged closing plates (13), and the sealing ring (14) is arranged at a position where the closing plates (13) contact each other, the end block (15) is connected to the tail of the closing plate (13), the closing spring (16) is connected between the end block (15) and the linear track (6), the pressure-bearing member (17) is mounted on the top surface of the closing plate (13), and the pressure-bearing member (17) adopts a broken line rod with two ends raised, and the ball (18) is arranged on the pressure-bearing member (17) through a spherical pair. The movable probe structure comprises a movable seat (8) slidably mounted in a linear track (6), and a connector (9) is provided on the movable seat (8) for installing a connecting line (5), a transceiver probe (10) is fixedly connected to the bottom of the movable seat (8) for transmitting and receiving ultrasonic waves, and the outer push rod (19) is an arc-shaped rod.

2. The transformer oil online monitoring device based on ultrasonic soundprint according to claim 1 is characterized in that: The main box (1) is mounted on the mounting seat (4), and the mounting seat (4) is mounted on the transformer; the protective cover (3) is provided with a waterproof ring connected to the waterproof groove on the main box (1), and the protective cover (3) is provided with a lock.

3. The transformer oil online monitoring device based on ultrasonic soundprint according to claim 1 is characterized in that: The winding reel (20) adopts a disc structure, and is rotatably mounted on the center of the winding reel (20) around a winding shaft (21). The winding reel (20) is mounted on one side of the main chassis (1) via a bracket, and a cable cavity is provided in the winding reel (20). Through holes are provided on both sides of the winding reel (20) for connecting wires (5) to enter and exit. The spiral spring (22) is mounted on the top of the winding reel (20), and the center of the spiral spring (22) is connected to the winding shaft (21).

4. The transformer oil online monitoring device based on ultrasonic soundprint according to claim 1 is characterized in that: A sealing rubber pad (7) is provided at the bottom of the linear track (6), and the linear track (6) is sealed and installed in a linear groove on the transformer oil tank via the sealing rubber pad (7); the sealing structure is provided on the top surface of the linear track (6), and the sealing structure is composed of independent sealing modules arranged in a linear manner, and adjacent independent sealing modules are in close contact and connection.

5. The transformer oil online monitoring device based on ultrasonic soundprint according to claim 1 is characterized in that: The connecting wire fixing clamp structure comprises a limit seat (23) fixedly connected to the movable probe structure, and the limit seat (23) is provided with a wire threading groove (24), and a rotating shaft (25) is rotatably mounted on the limit seat (23), a wire clamp (26) and a polygonal end (28) are fixedly connected to the rotating shaft (25), and a sliding sleeve (29) is slidably mounted on the polygonal end (28), a downward pressure spring (30) and a positioning rod (31) are connected to the sliding sleeve (29), and a positioning sleeve (32) is provided on the limit seat (23).

6. The transformer oil online monitoring device based on ultrasonic soundprint according to claim 5 is characterized in that: At least six wire clamping pieces (26) are arranged in a ring shape, and a protective pad (27) is arranged at the end of the wire clamping piece (26). The number of the positioning rods (31) is the same as that of the wire clamping piece (26), and the downward pressure spring (30) is connected between the sliding sleeve (29) and the multilateral end (28).

7. The transformer oil online monitoring device based on ultrasonic soundprint according to claim 1 is characterized in that: The connecting line (5) is provided with a hanging ring (33), and a counterweight (35) is installed on the hanging ring (33) via a hanging rope (34), and the counterweight (35) is slidably installed on a guide seat (36), the guide seat (36) is connected to the connecting line fixing clamp structure, and the hanging ring (33) is located between the connecting line fixing clamp structure and the movable probe structure.

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