Acoustics-based partial discharge positioning imaging device

Abstract

The utility model relates to the technical field of positioning imaging devices, and discloses a partial discharge positioning imaging device based on acoustics, which comprises an imaging device shell, and a high-speed data acquisition module is mounted on the inner wall of the right side of the imaging device shell; the sensor array is arranged on the left side of the high-speed data acquisition module, a metal sound wave medium is installed on the left side of the sensor array, a soft plastic sound wave medium is installed on the left side of the metal sound wave medium, and a ceramic sound wave medium is installed on the left side of the soft plastic sound wave medium; the additionally-arranged first adjusting driver can finally drive the mounting plate to move towards the left side to be close to the discharging position, and the second adjusting driver can finally drive the ceramic sound wave medium to move transversely, so that the ceramic sound wave medium can be closer to the discharging position and can receive electric pulses at the discharging position more comprehensively; therefore, the positioning accuracy of the imaging device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning imaging devices, in particular to a local discharge positioning imaging device based on acoustics. Background Art

[0002] The partial discharge location imaging device is a device specially used to detect and locate partial discharge phenomena in high-voltage electrical equipment. Through imaging technology, it can accurately and quickly find the points where partial discharge occurs in the equipment, helping electrical maintenance personnel to timely investigate and deal with it, ensuring the normal operation of electrical equipment.

[0003] Common local discharge positioning imaging devices generally use acoustic principles to receive and analyze the sound wave signals generated by local discharge to intuitively display the discharge points in the form of images. The acoustic sensor array can receive the sound wave signals generated inside the electrical equipment. These sound waves will propagate through the medium to the sensor array. The sensor array converts the sound wave signals into electrical signals, which are recorded and processed by a high-speed data acquisition system and finally converted into visible light images. However, when the discharge positioning of the equipment is performed, the positioning processing is mainly based on the changes in the frequency of the local discharge pulses. The distance between the positioning imaging device and the discharge point will also affect the positioning accuracy. When the distance between the positioning imaging device and the discharge point is far, the electric pulses at the discharge point will be delayed and attenuated, resulting in inaccurate positioning of the positioning imaging device. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the shortcomings of the prior art, the utility model provides a local discharge positioning imaging device based on acoustics to solve the problem raised in the above background technology that when the distance between the positioning imaging device and the discharge point is far, the electric pulse at the discharge point will be delayed and attenuated, resulting in inaccurate positioning of the positioning imaging device.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a local discharge positioning imaging device based on acoustics, comprising:

[0008] An imaging device housing, wherein a high-speed data acquisition module is installed on the right inner wall of the imaging device housing;

[0009] A sensor array is arranged on the left side of the high-speed data acquisition module, a metal acoustic wave medium is installed on the left side of the sensor array, a soft plastic acoustic wave medium is installed on the left side of the metal acoustic wave medium, and a ceramic acoustic wave medium is installed on the left side of the soft plastic acoustic wave medium;

[0010] An installation chamber is arranged at the lower part of the imaging device housing, wherein a first adjustment driving machine is installed in the inner cavity of the installation chamber, a first lead screw is coaxially installed on the rotor of the first adjustment driving machine, and an adjustment rod is screwed on the surface of the first lead screw;

[0011] A mounting plate is arranged at the left end of the adjusting rod, a second adjusting driving machine is installed on the upper surface of the mounting plate, a second screw is coaxially mounted on the rotor of the second adjusting driving machine, an adjusting block is screwed on the surface of the second screw, a mounting frame is installed on the left side of the adjusting block, an adjusting motor is installed on the surface of the mounting frame, and the adjusting motor is arranged on the left side of the ceramic acoustic wave medium.

[0012] Preferably, a connection block is installed at the bottom of the ceramic acoustic wave medium, and the rotor of the adjustment motor is connected to the surface of the connection block, so that the adjustment motor can adjust the inclination angle of the ceramic acoustic wave medium.

[0013] Preferably, mounting edges are installed on both sides of the upper surface of the adjustment block, and the connecting block is installed on the inner wall surface of the mounting edge through a bearing, thereby connecting the connecting block to the surface of the adjustment block, so that the adjustment block can drive the ceramic acoustic wave medium to move.

[0014] Preferably, a mounting block is installed on the surface of the adjusting rod, a mounting groove is provided on the right inner wall of the mounting chamber, and the mounting block is embedded in the inner cavity of the mounting groove, so that the adjusting rod can move linearly.

[0015] Preferably, a limiting frame is installed on the left side of the mounting plate, the limiting frame is L-shaped, a limiting groove is provided on the left inner wall of the mounting chamber, and the limiting frame is inserted into the inner cavity of the limiting groove, so that the mounting plate can move stably.

[0016] Preferably, a moving block is installed at the bottom of the adjusting block, a moving groove is opened on the upper surface of the mounting plate, the moving block is embedded in the inner cavity of the moving groove, and the moving block and the moving groove enable the adjusting block to move linearly.

[0017] Beneficial Effects

[0018] Compared with the prior art, the utility model provides a local discharge positioning imaging device based on acoustics, which has the following beneficial effects:

[0019] The acoustic-based local discharge positioning imaging device can transmit the medium used for sound wave transmission to the sensor array through ceramic sound wave medium, soft plastic sound wave medium and metal sound wave medium. The added first adjustment drive motor can drive the first lead screw to rotate, thereby driving the mounting plate to move to the left side close to the discharge location. The second adjustment drive motor can drive the second lead screw to rotate, thereby driving the adjustment block to move, that is, driving the ceramic sound wave medium to move laterally, so that the ceramic sound wave medium can be closer to the discharge location. The inclination angle of the ceramic sound wave medium can be adjusted by the adjustment motor, so that the ceramic sound wave medium can receive the electric pulse at the discharge location more comprehensively, reducing the attenuation of the electric pulse, thereby improving the positioning accuracy of the imaging device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0022] Figure 3 It is a cross-sectional structural schematic diagram of the installation chamber of the utility model;

[0023] Figure 4 This is a schematic diagram of the installation structure of the adjustment plate of the utility model;

[0024] Figure 5 This is a schematic diagram of the internal structure of the utility model;

[0025] Figure 6 This is a schematic diagram of the installation structure of the adjustment rod of the utility model;

[0026] Figure 7 This is a schematic diagram of the installation structure of the regulating motor of the utility model.

[0027] In the figure: 1. Imaging device housing; 2. High-speed data acquisition module; 3. Sensor array; 4. Metal acoustic wave medium; 5. Soft plastic acoustic wave medium; 6. Ceramic acoustic wave medium; 7. Mounting chamber; 8. First adjustment driver; 9. First lead screw; 10. Adjustment rod; 11. Mounting plate; 12. Second adjustment driver; 13. Second lead screw; 14. Adjustment block; 15. Mounting frame; 16. Adjustment motor; 17. Connecting block; 18. Mounting edge; 19. Mounting block; 20. Mounting slot; 21. Limiting frame; 22. Limiting slot; 23. Moving block; 24. Moving slot. DETAILED DESCRIPTION

[0028] 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.

[0029] The utility model provides a technical solution, a local discharge positioning imaging device based on acoustics, please refer to Figure 1 , including an imaging device housing 1, see Figure 2 , a high-speed data acquisition module 2 is installed on the right inner wall of the imaging device housing 1;

[0030] The sensor array 3 is arranged on the left side of the high-speed data acquisition module 2. Figure 5 , a metal acoustic wave medium 4 is installed on the left side of the sensor array 3, a soft plastic acoustic wave medium 5 is installed on the left side of the metal acoustic wave medium 4, and a ceramic acoustic wave medium 6 is installed on the left side of the soft plastic acoustic wave medium 5;

[0031] See also Figure 2 , the mounting chamber 7 is arranged at the lower part of the imaging device housing 1, see Figure 3 The first adjusting drive machine 8 is installed in the inner cavity of the installation chamber 7, see Figure 6 The rotor of the first adjustment driving machine 8 is coaxially mounted with a first lead screw 9, and an adjustment rod 10 is screwed onto the surface of the first lead screw 9;

[0032] See also Figure 3 , the mounting plate 11 is arranged at the left end of the adjusting rod 10, see Figure 1 The upper surface of the mounting plate 11 is mounted with a second adjusting driving machine 12, the rotor of the second adjusting driving machine 12 is coaxially mounted with a second lead screw 13, and the surface of the second lead screw 13 is screwed with an adjusting block 14, see Figure 7A mounting frame 15 is installed on the left side of the adjustment block 14, and an adjustment motor 16 is installed on the surface of the mounting frame 15. The adjustment motor 16 is arranged on the left side of the ceramic acoustic wave medium 6. The medium used for acoustic wave transmission can be transmitted to the sensor array 3 through the ceramic acoustic wave medium 6, the soft plastic acoustic wave medium 5 and the metal acoustic wave medium 4. The sensor array 3 converts the acoustic wave signal into an electrical signal, and records and processes it through the high-speed data acquisition module 2, and converts it into a visible light image. The first adjustment drive machine 8 can drive the first lead screw 9 to rotate, thereby driving the mounting plate 11 to move to the left side close to the discharge position. The second adjustment drive machine 12 can drive the second lead screw 13 to rotate, thereby driving the adjustment block 14 to move, that is, driving the ceramic acoustic wave medium 6 to move horizontally, so that the ceramic acoustic wave medium 6 can be closer to the discharge position, and the inclination angle of the ceramic acoustic wave medium 6 can be adjusted by the adjustment motor 16, so that the ceramic acoustic wave medium 6 can receive the electrical pulse at the discharge position more comprehensively, reducing the attenuation of the electrical pulse, thereby improving the positioning accuracy of the imaging device.

[0033] A connection block 17 is installed at the bottom of the ceramic acoustic wave medium 6 , and a rotor of the adjustment motor 16 is connected to the surface of the connection block 17 , so that the adjustment motor 16 can adjust the tilt angle of the ceramic acoustic wave medium 6 .

[0034] Mounting edges 18 are installed on both sides of the upper surface of the adjustment block 14, and the connecting block 17 is installed on the inner wall surface of the mounting edge 18 through a bearing, thereby connecting the connecting block 17 to the surface of the adjustment block 14, so that the adjustment block 14 can drive the ceramic acoustic wave medium 6 to move.

[0035] See also Figure 3 A mounting block 19 is installed on the surface of the adjusting rod 10, and a mounting groove 20 is opened on the right inner wall of the mounting chamber 7. The mounting block 19 is embedded in the inner cavity of the mounting groove 20, so that the adjusting rod 10 can move linearly.

[0036] A limit frame 21 is installed on the left side of the mounting plate 11. The limit frame 21 is L-shaped. A limit groove 22 is provided on the left inner wall of the mounting chamber 7. The limit frame 21 is inserted into the inner cavity of the limit groove 22, so that the mounting plate 11 can move stably.

[0037] See also Figure 4 A moving block 23 is installed at the bottom of the adjusting block 14, and a moving groove 24 is opened on the upper surface of the mounting plate 11. The moving block 23 is embedded in the inner cavity of the moving groove 24. The moving block 23 and the moving groove 24 enable the adjusting block 14 to move linearly.

[0038] The device firstly transmits the medium used for sound wave transmission to the sensor array 3 through the ceramic sound wave medium 6, the soft plastic sound wave medium 5 and the metal sound wave medium 4. The sensor array 3 converts the sound wave signal into an electrical signal, and records and processes it through the high-speed data acquisition module 2, and converts it into a visible light image. Then, starting the first adjustment driver 8 can drive the first lead screw 9 to rotate, thereby driving the mounting plate 11 to move to the left side close to the discharge position. The second adjustment driver 12 can drive the second lead screw 13 to rotate, thereby driving the adjustment block 14 to move, that is, driving the ceramic sound wave medium 6 to move horizontally, so that the ceramic sound wave medium 6 can be closer to the discharge position. Finally, the adjustment motor 16 can be connected to the surface of the ceramic sound wave medium 6 through the connecting block 17. Starting the adjustment motor 16 can adjust the inclination angle of the ceramic sound wave medium 6, so that the ceramic sound wave medium 6 can receive the electric pulse at the discharge position more comprehensively, reducing the attenuation of the electric pulse, thereby improving the positioning accuracy of the imaging device.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] 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 local discharge positioning imaging device based on acoustics, characterized in that: include: An imaging device housing (1), wherein a high-speed data acquisition module (2) is installed on the right inner wall of the imaging device housing (1); A sensor array (3) is arranged on the left side of the high-speed data acquisition module (2); a metal acoustic wave medium (4) is installed on the left side of the sensor array (3); a soft plastic acoustic wave medium (5) is installed on the left side of the metal acoustic wave medium (4); and a ceramic acoustic wave medium (6) is installed on the left side of the soft plastic acoustic wave medium (5); An installation chamber (7) is arranged at the lower part of the imaging device housing (1), a first adjustment drive motor (8) is installed in the inner cavity of the installation chamber (7), a first lead screw (9) is coaxially installed on the rotor of the first adjustment drive motor (8), and an adjustment rod (10) is screwed on the surface of the first lead screw (9); A mounting plate (11) is arranged at the left end of the adjusting rod (10); a second adjusting driving machine (12) is mounted on the upper surface of the mounting plate (11); a second lead screw (13) is coaxially mounted on the rotor of the second adjusting driving machine (12); an adjusting block (14) is screwed onto the surface of the second lead screw (13); a mounting frame (15) is mounted on the left side of the adjusting block (14); an adjusting motor (16) is mounted on the surface of the mounting frame (15); and the adjusting motor (16) is arranged on the left side of the ceramic acoustic wave medium (6).

2. The acoustic-based local discharge positioning imaging device according to claim 1, characterized in that: A connecting block (17) is installed at the bottom of the ceramic acoustic wave medium (6), and the rotor of the regulating motor (16) is connected to the surface of the connecting block (17).

3. The acoustic-based local discharge positioning imaging device according to claim 2, characterized in that: Mounting edges (18) are installed on both sides of the upper surface of the adjustment block (14), and the connection block (17) is installed on the inner wall surface of the mounting edge (18) through a bearing.

4. The acoustic-based local discharge positioning imaging device according to claim 1, characterized in that: A mounting block (19) is installed on the surface of the adjusting rod (10), a mounting groove (20) is provided on the right inner wall of the mounting chamber (7), and the mounting block (19) is embedded in the inner cavity of the mounting groove (20).

5. The acoustic-based local discharge positioning imaging device according to claim 1, characterized in that: A limiting frame (21) is installed on the left side of the installation plate (11), and the limiting frame (21) is designed to be L-shaped. A limiting groove (22) is provided on the left inner wall of the installation chamber (7), and the limiting frame (21) is inserted into the inner cavity of the limiting groove (22).

6. The acoustic-based local discharge positioning imaging device according to claim 1, characterized in that: A moving block (23) is installed at the bottom of the adjusting block (14), a moving groove (24) is opened on the upper surface of the mounting plate (11), and the moving block (23) is embedded in the inner cavity of the moving groove (24).

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