A detachable composite vibration energy harvester for transformer oil tank

Abstract

The application discloses a detachable composite vibration energy collector for a transformer oil tank and relates to the field of transformers, which comprises an opening and closing assembly, a lifting assembly and a collecting assembly. The opening and closing assembly comprises a top cover, a protective shell, a rotating part, a movable wrench and an extension part. The lifting assembly comprises a transmission part, a reversing part and a lifting part. The collecting assembly comprises a shell, a support, a permanent magnet, a vibrator and a lifting part. The opening and closing assembly and the lifting assembly can quickly and conveniently detach the collecting assembly and protect the collecting assembly in a complex working environment, so that the collecting assembly can be used. The collecting assembly converts vibration energy into electric energy to supply power to a sensor, reduces the maintenance time and is green and environment-friendly.

Description

Technical Field

[0001] This invention relates to the field of transformers, and in particular to a detachable composite vibration energy harvester for transformer oil tanks. Background Technology

[0002] Power transformers are key components of the power grid, and their operational status directly impacts the grid's safe and stable operation. Therefore, transformer condition monitoring is essential. However, transformers operate in harsh environments, and traditional power supply methods for various sensors (wired power and battery power) are costly to maintain. During operation, transformers generate minute amplitude (μm-level) vibrations on their surfaces. The surface vibration energy of large and medium-sized oil-immersed transformers is mainly concentrated at 100Hz, 200Hz, and 300Hz, with 100Hz being the dominant frequency. Collecting the vibration energy from the transformer surface to power its monitoring equipment is an excellent solution—environmentally friendly and with lower maintenance costs.

[0003] Existing energy harvesters for this operating condition have low output power, typically at the microwatt level, which is insufficient to meet the power consumption requirements of many monitoring devices. In some studies, surface springs are used to achieve resonance in the oscillator, which is prone to fatigue and has a short lifespan. Furthermore, the transformer operates in a harsh environment, making it difficult to quickly disassemble and protect the harvester. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the prior art, the present invention is proposed.

[0006] Therefore, the technical problem to be solved by the present invention is to provide power to various detection sensors and protect the energy harvester in the harsh environment of transformer operation.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a detachable composite vibration energy harvester for transformer oil tanks, comprising an opening and closing assembly, wherein the opening and closing assembly slides in a slide groove via an adjustable wrench, driving a rotating component to rotate and a telescopic component to extend and retract; a lifting assembly, wherein the lifting assembly drives a commutator to rotate via a transmission rod connected to the rotating component, thereby raising and lowering the harvesting assembly for protection; the harvesting assembly generates an electromotive force by cutting magnetic field lines through high-frequency vibration of the transformer, thereby harvesting energy and powering the sensor.

[0008] As a preferred embodiment of the detachable composite vibration energy harvester for transformer tanks described in this invention, the top cover is provided with an annular groove, a through hole, a sliding groove and a limiting groove, the rotating part is disposed inside the annular groove, and the movable wrench is disposed inside the sliding groove.

[0009] As a preferred embodiment of the detachable composite vibration energy harvester for transformer tanks described in this invention, the rotating component includes a rotating rack, a rotating gear, and fixed columns. The rotating rack is disposed inside an annular groove, and six fixed columns are arranged in a ring inside the annular groove. The rotating gear is disposed on the fixed columns and meshes with the rotating rack. The movable wrench includes a T-shaped rod and a rotating shaft. The T-shaped rod can be folded and engaged inside a limiting groove via the rotating shaft.

[0010] As a preferred embodiment of the detachable composite vibration energy harvester for transformer tanks described in this invention, the telescopic component includes a telescopic groove, a telescopic toothed plate, and a fan-shaped plate. The telescopic toothed plate is snapped into the telescopic groove, and the side of the telescopic toothed plate with a rack meshes with a gear. The fan-shaped plate is set on the rack, and as the gear rotates, the fan-shaped plate can be merged into a complete circle to cover the top cover.

[0011] As a preferred embodiment of the detachable composite vibration energy harvester for transformer tanks described in this invention, the transmission component includes a transmission rod and a transmission gear, the reversing component includes a bevel gear, a linkage rod, and a fixing block, the rotating gear is connected to the transmission rod, the transmission rod drives the transmission gear to rotate, and drives the bevel gear to rotate.

[0012] In a preferred embodiment of the detachable composite vibration energy harvester for transformer tanks described in this invention, the lifting component includes a base, a support column, a through hole, a threaded column, and a shelf. A bevel gear engages with the threaded column to raise or lower the device. The shelf is mounted on one end of the threaded column and can pass through the through hole.

[0013] As a preferred embodiment of the detachable composite vibration energy harvester for transformer tanks described in this invention, the harvesting component includes a housing, a harvester top cover and a base, and mounting screws; the bracket includes a bottom vibrator bracket and a bottom vibrator support, and the bracket is installed inside the housing.

[0014] As a preferred embodiment of the detachable composite vibration energy harvester for transformer tanks described in this invention, the permanent magnet includes a top inner ring magnet, a top outer ring magnet, a bottom outer ring magnet, and a bottom inner ring magnet. The top inner ring magnet and the top outer ring magnet are embedded in the top cover of the harvester, and the bottom outer ring magnet and the bottom inner ring magnet are embedded in the base of the harvester.

[0015] As a preferred embodiment of the detachable composite vibration energy harvester for transformer tanks described in this invention, the vibrator includes a coil tray, an induction coil, a coil top cover, a spring plate, a piezoelectric plate, and a mass block. The induction coil is placed between the coil tray and the coil top cover, and the piezoelectric plate and the mass block are disposed on the spring plate.

[0016] As a preferred embodiment of the detachable composite vibration energy harvester for transformer tanks described in this invention, the supporting component includes a graphite bushing, a bottom spring of the oscillator, and a top spring of the oscillator, with the bottom spring and the top spring suspending and supporting the oscillator.

[0017] The beneficial effects of this invention are as follows: the transformer vibration energy is converted into electrical energy to power the sensor by the set acquisition component, and the acquisition component can be quickly disassembled, installed and protected by the set opening and closing component and lifting component, so as to ensure quick maintenance and that the operation is not affected by the external environment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0019] Figure 1 This is an overall top view of the first embodiment.

[0020] Figure 2 This is an interior top view of the first embodiment.

[0021] Figure 3 This is a side view of the opening and closing component in the first embodiment.

[0022] Figure 4 This is a top view of the opening and closing component in the first embodiment.

[0023] Figure 5 This is a right-side view of the lifting assembly in the second embodiment.

[0024] Figure 6 This is a left-side view of the lifting assembly in the second embodiment.

[0025] Figure 7 This is a top view of the acquisition component in the third embodiment.

[0026] Figure 8 This is an internal view of the acquisition component in the third embodiment.

[0027] Figure 9This is a cross-sectional view of the acquisition component in the third embodiment.

[0028] Figure 10 This refers to the direction of the magnetic field in the third embodiment. Detailed Implementation

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0032] Example 1

[0033] Reference Figures 1-4 This is the first embodiment of the present invention, which provides a detachable composite vibration energy harvester for transformer oil tanks, characterized in that it includes an opening and closing assembly 100.

[0034] The opening and closing assembly 100 includes a top cover 101, a protective shell 102, a rotating component 103, an adjustable wrench 104, and a telescopic component 105.

[0035] Specifically, the upper surface of the top cover 101 is provided with an annular groove 101a, a through hole 101b, a sliding groove 101c, and a limiting groove 101d; the rotating component 103 includes a rotating rack 103a, a rotating gear 103b, and a fixed post 103c; the adjustable wrench 104 includes a T-shaped rod 104a and a rotating shaft 104b; the telescopic component 105 includes a telescopic groove 105a, a telescopic toothed plate 105b, and a sector plate 105c.

[0036] The top cover 101 is mounted on the protective shell 102. An annular groove 101a is formed on the top cover 101, and a rotating rack 103a is installed in the annular groove 101a. A through hole 101b is formed in the center of the top cover 101. A fixing post 103c is located inside the annular groove 101a. The rotating gear 103a is mounted on the fixing post 103c and meshes with the rotating rack 103b, allowing them to make contact. An adjustable wrench 104 is installed in a sliding groove 101c on the top cover 101. One end of a T-shaped rod 104a is connected to the rotating rack, and a rotating shaft 104b is located in the middle section of the T-shaped rod 104a. The sliding of rod 104a on the slide groove 101c can drive the rotating rack 103a to rotate. The rotating shaft 104b on the adjustable wrench 104 can fold the T-shaped rod 104a and lock it into the limiting groove 101d on the top cover 101 for limiting. A telescopic rack 105b is provided next to the rotating gear 103b. The smooth end of the telescopic rack 105b can be placed on the telescopic groove 105a opened on the top cover 101. The toothed end of the telescopic rack 105b meshes with the rotating gear 103a. When the rotating gear 103a moves, it can drive the telescopic rack 105b to move in the telescopic groove 105a. The sector plate 105c is provided on the upper part of the telescopic rack 105a. As the telescopic rack 105a moves, it drives the sector plate 105c to move. The sector plate 105c can be combined into a circular plate to block the through hole 101b.

[0037] It should be noted that the rotating gear 103b, the fixed column 103c, the telescopic toothed plate 105b, and the sector plate 105c are all provided with 6 units evenly distributed along the circumference.

[0038] Example 2

[0039] Reference Figure 5 , Figure 6 This is the second embodiment of the present invention, which is based on the previous embodiment, and includes a lifting component 200.

[0040] The lifting assembly 200 includes a transmission component 201, a reversing component 202, and a lifting component 203.

[0041] Specifically, the transmission component 201 includes a transmission rod 201a and a transmission gear 201b. The reversing component 202 includes a bevel gear 202a, a linkage rod 202b, and a fixing block 202c. The lifting component 203 includes a base 203a, a support column 203b, a through hole 203c, a threaded rod 203d, and a shelf 203e.

[0042] One end of the transmission rod 201a is connected to the rotating gear 103b, and the transmission gear 201b is installed at the other end of the transmission rod 201a. The fixed block 202c is installed on the base 203a, and the linkage rod 202b is installed through the fixed block 202c. The two ends of the linkage rod 202b are respectively equipped with bevel gears 202a-1 and 202a-2. The bevel gear 202a-1 meshes with the transmission gear 201b. When the rotating gear 103b rotates, it drives the transmission gear 201b to rotate through the transmission rod 201a. The bevel gear 202a-1 meshes with the transmission gear 201b and rotates accordingly. Since both the bevel gears 202a-1 and 202a-2 are installed on the linkage rod 202b, they are synchronously transmitted.

[0043] The base 203a is located inside the protective shell 102 of the opening and closing assembly 100. Support columns 203b are installed at the four corners of the base 203a. A through hole 203c is opened at the center of the base 203a. A bevel gear 202a-3 is installed in the through hole 203c. The bevel gear 202a-3 meshes with the bevel gear 202a-2. A threaded rod 203d is installed at the center of the bevel gear 202a-3. The threaded rod 203d can move up and down in the through hole 203c through the transmission of the meshing bevel gears 202a-2 and 202a-3. A shelf 203e is provided at the top of the threaded rod 203d. The size of the shelf 203e is slightly smaller than that of the through hole 101b.

[0044] Example 3

[0045] Reference Figures 7-10 This is the third embodiment of the present invention, which is based on the previous embodiment and includes a data acquisition component 300.

[0046] The acquisition component 300 includes a housing 301, a bracket 302, a permanent magnet 303, a vibrator 304, and a support component 305.

[0047] Specifically, the outer casing 301 includes a collector top cover 301a, a collector base 301b, and mounting screws 301c; the bracket 302 includes a top vibrator bracket 302a and a bottom vibrator bracket 302b; the permanent magnet 303 includes a top inner ring magnet 303a, a top outer ring magnet 303b, a bottom outer ring magnet 303c, and a bottom inner ring magnet 303d; the vibrator 304 includes a coil tray 304a, an induction coil 304b, a coil top cover 304c, a spring sheet 304d, a piezoelectric sheet 304e, and a mass block 304f; the supporting component 305 includes a graphite bushing 305a, a bottom spring 305b, and a top spring 305c.

[0048] The top vibrator support 302a and the bottom vibrator support 302b are both fixedly connected to the top cover 301a and the base 301b of the collector respectively by screws. The top inner ring magnet 303a and the top outer ring magnet 303b are directly embedded in the top cover 301a of the collector, and the bottom outer ring magnet 303c and the bottom inner ring magnet 303d are directly embedded in the base 301b of the collector. The top cover 301a and the base 301b of the collector are connected together by mounting screws 301c.

[0049] The induction coil 304b is placed in the coil tray 304a and the coil top cover 304c. The piezoelectric sheet 304e and the mass block 304f are glued to the spring sheet 304d. The spring sheet 304d is fixedly connected to the coil tray 304a. The bottom spring 305b and the top spring 305c of the oscillator suspend and support the oscillator 304.

[0050] Specifically, the magnetization direction of the top inner ring magnet 303a and the top outer ring magnet 303b is downward, while the magnetization direction of the bottom outer ring magnet 303c and the bottom inner ring magnet 303d is upward.

[0051] It should be noted that small protrusions are provided on the top oscillator bracket 302a, the bottom oscillator bracket 302b, the coil tray 304a, and the coil top cover 304c to facilitate the installation of the bottom spring 305b and the top spring 305c of the oscillator.

[0052] Working principle: First, the T-shaped rod 104a set on the top cover 101 rotates on the slide groove 101c. When the T-shaped rod 104a rotates, the rotating rack 103a set inside the annular groove 101a and connected to the T-shaped rod 104a will rotate synchronously. At this time, the rotating gear 103b installed on the fixed column 103c will rotate because it meshes with the rotating rack 103a. The toothed end of the telescopic toothed plate 105b set inside the telescopic groove 105a on the side of the top cover 101 is in contact with the rotating gear 103a. As it rotates, it moves in the telescopic groove 105a. At this time, the fan-shaped plate 105c set on the telescopic toothed plate 105b will move to all sides to expose the through hole 101b.

[0053] Since the transmission gear 201b is synchronously driven by the transmission rod 201a and the rotating gear 103b on the annular groove 101a, the bevel gear 202a meshing with the transmission gear 201b will rotate, thereby raising the spiral rod 203d. The placement plate 203e set on the spiral rod 203d will be raised accordingly and can pass through the through hole 101b. The collection component 300 is installed on the placement plate 203e. The T-shaped rod 104a slides in the opposite direction, and the movement state is opposite to the previous section. The collection component 300 will descend into the protective shell 102. At this time, the T-shaped rod 104a is locked in the limiting groove 101d by the rotating shaft 104b to prevent loosening and instability of the sector plate 105c.

[0054] When the acquisition component 300 enters the protective shell 102, the transformer will generate high-frequency micro-vibrations during operation, mainly at a frequency of 100Hz. The acquisition component 300 sets the resonant frequency of the oscillator 304 to 100Hz by quantitatively designing the stiffness of the spring 305 and the mass of the oscillator 304. Under the 100Hz vibration excitation on the surface of the transformer tank, the oscillator 304 will resonate, amplifying the vibration displacement and driving the induction coil 304b to move up and down in the magnetic field, cutting the magnetic field lines and generating an induced electromotive force, converting vibration energy into electrical energy. By quantitatively designing the stiffness of the spring plate 304d and the mass of the mass block 304f, the vibration amplitude is amplified, causing the piezoelectric sheet to deform and generate an electromotive force on both sides, thus realizing the acquisition of vibration energy.

[0055] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A detachable composite vibration energy harvester for transformer oil tanks, characterized in that: include, The opening and closing assembly (100) includes a top cover (101), a protective shell (102) connected to the top cover (101), a rotating component (103) disposed on the end face of the top cover (101), a movable wrench (104) disposed on the rotating component (103), and a telescopic component (105) disposed on the upper part of the top cover (101). The lifting assembly (200) includes a transmission component (201), a reversing component (202) connected to the transmission component (201), and a lifting component (203) connected to the reversing component (202). The acquisition component (300) includes a housing (301), a bracket (302) disposed inside the housing, a permanent magnet (303) disposed on the inner end face of the housing (301), a vibrator (304) disposed on the bracket (302), and a support member (305) connected between the bracket (302) and the vibrator (304). The top end face of the top cover (101) is provided with an annular groove (101a), a through hole (101b), a sliding groove (101c) and a limiting groove (101d). The annular groove (101a) is provided on the surface of the top cover (101), the through hole (101b) is formed through one end of the top cover (101), and the sliding groove (101c) and the limiting groove (101d) are both provided on the side of the top cover (101). A rotating component (103) is provided inside the annular groove (101a). The rotating component (103) includes a rotating rack (103a), a rotating gear (103b), and a fixed column (103c). The rotating component (103) is coaxially arranged in the annular groove (101a). The rotating rack (103a) and the rotating gear (103b) mesh with each other. The rotating gear (103b) is sleeved on the fixed column (103c). The rack (103a) is connected to a movable wrench (104), which includes a T-shaped rod (104a) and a rotating shaft (104b). The movable wrench (104) is connected to the outer ring of the rotating rack (103a) and moves in the slide groove (101c). A telescopic component (105) is provided next to the gear (103b). The telescopic component (105) includes a telescopic groove (105a), a telescopic toothed plate (105b), and a sector plate (105c). The telescopic groove (105a) is located on the side of the top cover (101), and the telescopic toothed plate (105b) is located inside the telescopic groove (105a) and meshes with the rotating gear (103b).

2. The detachable composite vibration energy harvester for transformer tanks as described in claim 1, characterized in that: The transmission component (201) includes a transmission rod (201a) and a transmission gear (201b). The reversing component (202) includes a bevel gear (202a), a linkage rod (202b), and a fixed block (202c). A rotating gear (103b) and a transmission gear (201b) are respectively installed at both ends of the transmission rod (201a).

3. The detachable composite vibration energy harvester for transformer tanks as described in claim 2, characterized in that: The lifting component (203) includes a base (203a), a support column (203b), a through hole (203c), a threaded rod (203d), and a shelf (203e). The support column (203b) is installed at the bottom of the base (203a), the shelf (203e) is set at the top of the threaded rod (203d), and the threaded rod (203d) is provided with a through hole (203c).

4. A detachable composite vibration energy harvester for transformer tanks as described in claim 3, characterized in that: The housing (301) includes a collector top cover (301a), a collector base (301b), and mounting screws (301c). The bracket (302) includes a top vibrator bracket (302a) and a bottom vibrator bracket (302b). The bracket (302) is disposed inside the housing (301).

5. A detachable composite vibration energy harvester for transformer tanks as described in claim 4, characterized in that: The permanent magnet (303) includes a top inner ring magnet (303a), a top outer ring magnet (303b), a bottom outer ring magnet (303c), and a bottom inner ring magnet (303d). The permanent magnet (303) is mounted on a bracket (302). The oscillator (304) is mounted on the bracket (302) and includes a coil tray (304a), an induction coil (304b), a coil top cover (304c), a spring plate (304d), a piezoelectric plate (304e), and a mass block (304f).

6. A detachable composite vibration energy harvester for transformer tanks as described in claim 5, characterized in that: The lifting component (305) includes a graphite bushing (305a), a bottom spring (305b) of the oscillator, and a top spring (305c) of the oscillator. One end of the lifting component (305) is connected to the oscillator (304), and the other end is connected to the bracket (302).

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