Power supply device, oil mist monitoring device and generator

Abstract

The utility model relates to a power supply device, an oil mist monitoring device and a generator. The power supply device comprises a mounting bracket, piezoelectric ceramics and a PVDF (Polyvinylidene Fluoride) piezoelectric film; the piezoelectric ceramic is arranged on the mounting bracket and is electrically connected with an electric device mounted on the mounting bracket; and the PVDF piezoelectric film is arranged on the mounting bracket and is electrically connected with the electric device. The piezoelectric ceramic and the PVDF piezoelectric film can convert energy of the surrounding environment into electric energy and supply power to the electric device through the piezoelectric performance of the piezoelectric ceramic and the PVDF piezoelectric film, independent lead wires or batteries are not needed to supply power to the electric device, the power supply steps are simplified, the piezoelectric ceramic and the PVDF piezoelectric film serve as two power supply units to supply power to the electric device, and the power supply efficiency is improved. In addition, the piezoelectric ceramic and the PVDF piezoelectric film can be mutually standby, so that the stability of the power supply device in use is ensured.

Description

Technical Field

[0001] The present disclosure relates to the field of generators, and in particular to a power supply device, an oil mist monitoring device and a generator. Background Art

[0002] Wind tunnels are the main installation location for hydropower station generators, and the thrust bearings in them need to be lubricated with lubricating oil to ensure the normal operation of the generators. However, the high-speed rotation of the turbines during operation will cause the lubricating oil in the thrust bearing oil tank to evaporate, throw off, and escape. These factors will work together to produce a large amount of oil mist, which will affect the performance and service life of the equipment, and will also harm human health and increase the cost of equipment operation and maintenance. Therefore, oil mist sensors are needed to monitor the oil mist in the wind tunnel, but due to the installation environment of the hydropower station generators, it is not convenient to use wires to power the oil mist sensors, and using batteries will lead to the need for frequent replacement and waste of resources. Utility Model Content

[0003] The purpose of the present disclosure is to provide a power supply device, an oil mist monitoring device and a generator to power an oil mist sensor, thereby at least partially solving the above technical problems.

[0004] In order to achieve the above-mentioned objectives, the first aspect of the present disclosure provides a power supply device, including: a mounting bracket; a piezoelectric ceramic for converting sound energy into electrical energy, the piezoelectric ceramic being arranged on the mounting bracket and electrically connected to an electrical device mounted on the mounting bracket to transmit the electrical energy to the electrical device; a PVDF piezoelectric film for converting wind energy and / or vibration energy into the electrical energy, the PVDF piezoelectric film being arranged on the mounting bracket and electrically connected to the electrical device to transmit the electrical energy to the electrical device.

[0005] Optionally, a groove is provided on the mounting bracket, and the piezoelectric ceramic is arranged in the groove.

[0006] Optionally, a reflection structure for reflecting sound is provided on the circumference of the groove.

[0007] Optionally, the reflective structure is constructed as a columnar structure perpendicular to the plane where the groove is located, and there are multiple reflective structures, and the multiple reflective structures are arranged at intervals along the outer peripheral side of the groove.

[0008] Optionally, one end of the PVDF piezoelectric film is connected to an edge of the mounting bracket, and the other end is extended to a side away from the mounting bracket.

[0009] Optionally, the mounting bracket includes a first side panel and a second side panel, the first side panel and the second side panel are vertically arranged to form an installation space, and the side of the first side panel and / or the second side panel close to the installation space is used to install the electrical device; the piezoelectric ceramic is arranged on the side of the first side panel or the second side panel away from the installation space, the PVDF piezoelectric film is arranged at the end of the first side panel away from the second side panel, or the PVDF piezoelectric film is arranged at the end of the second side panel away from the first side panel.

[0010] Optionally, the piezoelectric ceramic and the PVDF piezoelectric film are both arranged on the first side plate, and the second side plate is used for mounting the electrical device.

[0011] Optionally, the mounting bracket further includes a connecting portion, which is disposed on the second side plate; the connecting portion is configured as a connecting hole, and there are a plurality of connecting holes, which are spaced apart along the circumference of the second side plate.

[0012] A second aspect of the present disclosure provides an oil mist monitoring device, comprising an oil mist sensor and the above-mentioned power supply device, wherein the oil mist sensor is the electrical component.

[0013] A third aspect of the present disclosure provides a generator, comprising the above-mentioned oil mist monitoring device.

[0014] Through the above technical scheme, the piezoelectric ceramics and PVDF piezoelectric film of the power supply device of the present invention can convert the energy of the surrounding environment, such as sound energy and wind energy, into electrical energy and power the electrical devices through their own piezoelectric characteristics. There is no need to use separate leads or batteries to power the electrical devices, which simplifies the power supply steps. Piezoelectric ceramics and PVDF piezoelectric film are used as two power supply units to power the electrical devices, which can also fully utilize the energy in the environment while ensuring the power supply of the electrical devices, thereby improving the utilization rate of resources. In addition, the piezoelectric ceramics and PVDF piezoelectric film can serve as backup for each other. When one of them has a problem, the other can still power the electrical device, thereby ensuring the stability of the power supply device during use.

[0015] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0017] Figure 1 is a schematic diagram of the structure of a power supply device provided by an embodiment of the present disclosure from a first perspective;

[0018] Figure 2 It is a second perspective structural diagram of the power supply device provided in an embodiment of the present disclosure.

[0019] Description of Reference Numerals

[0020] 1-mounting bracket; 11-first side plate; 12-second side plate; 2-piezoelectric ceramic; 3-PVDF piezoelectric film; 4-groove; 5-reflection structure; 6-mounting space; 7-connecting part; 71-connecting hole; 8-oil mist sensor. DETAILED DESCRIPTION

[0021] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0022] In the present disclosure, unless otherwise specified, directional words such as "inside" and "outside" refer to "inside" and "outside" relative to the corresponding component's own outline. In addition, the terms "first", "second", etc. used in the present disclosure are to distinguish one element from another and do not have order and importance. In addition, in the following description, when referring to the drawings, unless otherwise explained, the same figure numbers in different drawings represent the same or similar elements. The above definitions are only used to explain and illustrate the present disclosure and should not be understood as limitations on the present disclosure. It should be noted that the piezoelectric ceramics involved in the present disclosure have piezoelectricity, that is, when the piezoelectric ceramics are deformed by directional pressure or tension, the surfaces on both sides perpendicular to the stress can carry equal amounts of opposite charges, thereby converting mechanical energy into electrical energy, such as the self-powered smart water meter based on piezoelectric ceramics described in publication number CN207817863U, which uses the impact of water flow to deform the piezoelectric ceramics and generate electrical energy, thereby powering the control circuit; PVDF (polyvinylidene fluoride) piezoelectric film can also have the same piezoelectricity as piezoelectric ceramics, that is, it can convert the mechanical energy that causes its deformation into electrical energy, such as the self-luminous shoes for night running described in publication number CN210492829U, in which a PVDF piezoelectric film is arranged at the load-bearing part of the insole, so that the PVDF piezoelectric film is deformed to generate electrical energy to power the LED lamp.

[0023] The power supply device in the exemplary embodiments of the present disclosure will be described below with reference to the accompanying drawings.

[0024] like Figure 1 and Figure 2As shown, in the first aspect of the present disclosure, a power supply device is provided, which includes a mounting bracket 1, a piezoelectric ceramic 2 and a PVDF piezoelectric film 3; wherein the piezoelectric ceramic 2 is used to convert sound energy into electrical energy, the piezoelectric ceramic 2 is arranged on the mounting bracket 1 and is electrically connected to the electrical device mounted on the mounting bracket 1 to transmit the electrical energy to the electrical device; the PVDF piezoelectric film 3 is used to convert wind energy and / or vibration energy into electrical energy, the PVDF piezoelectric film 3 is arranged on the mounting bracket 1 and is electrically connected to the electrical device to transmit the electrical energy to the electrical device. The generator in the wind tunnel will generate relatively large noise during operation, and the noise will act on the piezoelectric ceramic 2, thereby causing the piezoelectric ceramic 2 to deform and generate electrical energy to power the electrical devices; and the moving wind in the wind tunnel and / or the vibration of the frame on the generator can also cause the PVDF piezoelectric film 3 to vibrate and generate electrical energy, thereby powering the electrical devices. Based on this, the piezoelectric ceramic 2 and PVDF piezoelectric film 3 of the power supply device of the present invention can convert the energy of the surrounding environment into electrical energy and power the electrical devices through their own piezoelectric characteristics, without the need for separate leads or batteries to power the electrical devices, thereby simplifying the power supply steps, and using the piezoelectric ceramic 2 and PVDF piezoelectric film 3 as two power supply units to power the electrical devices, while ensuring the power supply of the electrical devices, fully utilizing the energy in the environment, thereby improving the utilization rate of resources. In addition, the piezoelectric ceramic 2 and PVDF piezoelectric film 3 can serve as backup for each other. When one of them has a problem, the other can still power the electrical devices, thereby ensuring the stability of the power supply device during use.

[0025] In addition, wire connection points may be provided on the piezoelectric ceramic 2 and the PVDF piezoelectric film 3 so that the piezoelectric ceramic 2 and the PVDF piezoelectric film 3 can be electrically connected to an electrical device through a wire, thereby charging the electrical device.

[0026] It should be noted that in order to prevent the material from breaking due to sound pressure resonance, the present invention adopts piezoelectric ceramics 2 with higher density and greater rigidity to power the electrical devices, wherein the density of the piezoelectric ceramics can be 7500kg / m2, the dielectric constant can be 3200, and the length, width and thickness can be 40mm×40mm×1mm; and since the moving wind in the wind tunnel and the vibration of the frame on the generator are relatively small, the present invention adopts PVDF piezoelectric film 3 with flexible material, low density and low impedance to power the electrical devices, wherein the density of the PVDF piezoelectric film 3 can be 1.78g / cm, the dielectric constant can be 12, and the length, width and thickness can be 70mm×50mm×0.1mm.

[0027] In some embodiments of the present disclosure, Figure 2As shown, a groove 4 is provided on the mounting bracket 1, and the piezoelectric ceramic 2 is provided in the groove 4. The groove 4 can not only provide certain protection for the piezoelectric ceramic 2, but also enable at least a part of the sound energy to act on the piezoelectric ceramic 2 through the groove 4, thereby facilitating the piezoelectric ceramic 2 to convert the sound energy into electrical energy.

[0028] An aluminum plate may be disposed on the groove 4 , and the piezoelectric ceramic 2 may be connected to the aluminum plate via insulating adhesive, thereby ensuring the stability of the piezoelectric ceramic 2 after being disposed in the groove 4 .

[0029] In order to ensure that the piezoelectric ceramic 2 can convert sufficient electrical energy, such as Figure 1 and Figure 2 As shown, a reflection structure 5 for reflecting sound is provided around the groove 4 of the present disclosure. The reflection structure 5 can reflect the sound energy around the groove 4 into the groove 4, so that more sound energy can act on the piezoelectric ceramic 2.

[0030] Specifically, the reflective structure 5 can be constructed as a columnar structure perpendicular to the plane where the groove 4 is located, and there are multiple reflective structures 5, and the multiple reflective structures 5 are arranged at intervals along the outer peripheral side of the groove 4. This can increase the reflection effect, so that a large amount of sound energy can act on the piezoelectric ceramic 2 in the groove 4 under the action of the reflective structure 5, thereby increasing the power supply of the piezoelectric ceramic 2. In addition, the columnar structure can be made of insulating rubber, which can reduce the weight of the reflective structure 5 to a certain extent, and prevent the mounting bracket 1 from breaking due to the excessive weight of the reflective structure 5.

[0031] The cross-sectional diameter of the columnar structure may be 10 mm, the height may be 15 mm, and the interval between the plurality of columnar structures may be 20 mm.

[0032] In some embodiments of the present disclosure, Figure 1 As shown, one end of the PVDF piezoelectric film 3 is connected to the edge of the mounting bracket 1, and the other end is extended to a side away from the mounting bracket 1. That is, one end of the PVDF piezoelectric film 3 is a fixed end, and the other end is a free end, so that the PVDF piezoelectric film 3 can be deformed more easily when subjected to wind energy or vibration energy, thereby generating electrical energy according to its own piezoelectric characteristics to power the electrical device.

[0033] In some embodiments, Figure 1 and Figure 2As shown, the mounting bracket 1 includes a first side plate 11 and a second side plate 12, the first side plate 11 and the second side plate 12 are vertically arranged to form an installation space 6, and the side of the first side plate 11 and / or the second side plate 12 close to the installation space 6 is used to install electrical components; the piezoelectric ceramic 2 is arranged on the side of the first side plate 11 or the second side plate 12 away from the installation space 6, and the PVDF piezoelectric film 3 is arranged on the end of the first side plate 11 away from the second side plate 12, or the PVDF piezoelectric film 3 is arranged on the end of the second side plate 12 away from the first side plate 11. That is, the first side plate 11 and the second side plate 12 form an L-shaped mounting bracket 1, and the installation space 6 is located on the inner side of the mounting bracket 1, so that the electrical components arranged in the installation space 6 can be protected by the first side plate 11 and the second side plate 12 to a certain extent, reducing or even avoiding the influence of the external environment on the use of the electrical components; the piezoelectric ceramic 2 is arranged on the side away from the installation space 6, which can also facilitate the transmission of external sound to the piezoelectric ceramic 2, reducing the influence of the mounting bracket 1 on the transmission of sound.

[0034] For example, the piezoelectric ceramic 2 and the PVDF piezoelectric film 3 can both be arranged on the first side plate 11, and the second side plate 12 is used to install electrical components. Specifically, the second side plate 12 provided with electrical components can also be used to connect with other components of the generator. Therefore, the piezoelectric ceramic 2 and the PVDF piezoelectric film 3 can be arranged on the first side plate 11 to prevent the two from affecting the installation of the mounting bracket 1. At this time, one end of the PVDF piezoelectric film 3 is connected to the side of the first side plate 11 away from the second side plate 12, and the other end can be extended in a winding direction parallel to the extension direction of the second side plate 12, so that the contact area between the PVDF piezoelectric film 3 and the outside world can be increased, so as to facilitate it to better absorb the energy from the outside world.

[0035] The length, width and height of the first side plate 11 may be a square thin plate of 100 mm×100 mm×10 mm, and the length, width and height of the groove 4 may be a square groove of 50 mm×50 mm×9.5 mm.

[0036] In order to facilitate the connection of the mounting bracket 1, as Figure 1 and Figure 2As shown, the mounting bracket 1 may further include a connecting portion 7, and the connecting portion 7 is arranged on the second side plate 12, that is, the piezoelectric ceramic 2 and the PVDF piezoelectric film 3 are on different side plates from the connecting portion 7, so that the piezoelectric ceramic 2 and the PVDF piezoelectric film 3 can be prevented from affecting the connection between the mounting bracket 1 and other components, wherein the connecting portion 7 can be constructed as a connecting hole 71, and there are multiple connecting holes 71, and the multiple connecting holes 71 are arranged at intervals along the circumference of the second side plate 12. The connection hole 71 can be connected to other components on the generator through fasteners. When the power supply device and electrical components need to be replaced or repaired, the power supply device can be removed by unscrewing the fasteners, so that the components on the power supply device can be replaced or repaired. The provision of multiple connection holes 71 can reduce the impact of the environment in the wind tunnel on the power supply device and ensure the stability of the power supply device after connection. In addition, since the multiple connection holes 71 are arranged at circumferential intervals along the second side plate 12, the middle part of the second side plate 12 close to the installation space 6 will have a larger space, which can be used to install electrical components. Similarly, the electrical components can also be connected to the second side plate 12 by fasteners such as screws or bolts. Of course, in order to ensure the stability of the electrical components after being connected to the power supply device, the electrical components can also be connected to the second side plate 12 by multiple fasteners.

[0037] It should be noted that the locations of the electrical components, the piezoelectric ceramics 2 and the PVDF piezoelectric film 3 can be adaptively adjusted according to the on-site conditions, as long as the piezoelectric ceramics 2 and the PVDF piezoelectric film 3 can absorb energy from the environment and supply power to the electrical components. This disclosure does not limit this.

[0038] The second aspect of the present disclosure provides an oil mist monitoring device, including an oil mist sensor 8 and the above-mentioned power supply device, wherein the oil mist sensor 8 is an electrical device. It should be noted that the oil mist monitoring device has all the beneficial effects of the power supply device, which will not be described in detail in the present disclosure.

[0039] The second aspect of the present disclosure provides a generator, comprising the above-mentioned oil mist monitoring device. It should be noted that the generator has all the beneficial effects of the oil mist monitoring device, which will not be described in detail in the present disclosure.

[0040] Specifically, the oil mist monitoring device can be installed on the lower frame of the generator, near the rotating shaft, between the sealing teeth and on the periphery of the stator, so as to comprehensively monitor the oil mist concentration in the wind tunnel and near the generator, thus ensuring the safe and stable operation of the generator.

[0041] In summary, the present disclosure exemplarily illustrates the use process of the power supply device and the oil mist monitoring device.

[0042] The mounting bracket 1 disclosed in the present invention can install the power supply device on the lower frame of the generator, near the rotating shaft, between the sealing teeth and on the periphery of the stator through the connecting holes 71 and fasteners. The oil mist sensor 8 is installed on the side of the second side plate 12 close to the mounting space 6 through fasteners such as bolts or screws. Under normal working conditions, the noise generated by the engine will be reflected to the piezoelectric ceramic 2 in the groove 4 through the reflection structure 5. The piezoelectric ceramic 2 will deform under the action of sound energy, thereby generating electrical energy to power the oil mist sensor 8, and the PVDF piezoelectric film 3 will also vibrate due to the movement of wind in the wind tunnel and / or the vibration of the frame on the generator, thereby generating electrical energy, and then powering the oil mist sensor 8. Based on this, the present invention The piezoelectric ceramics 2 and PVDF piezoelectric film 3 of the disclosed power supply device can convert the energy of the surrounding environment into electrical energy and power the oil mist sensor 8 through their own piezoelectric characteristics. There is no need to use separate leads or batteries to power the oil mist sensor 8, which simplifies the power supply steps. The piezoelectric ceramics 2 and PVDF piezoelectric film 3 are used as two power supply units to power electrical devices. While ensuring the power supply of the oil mist sensor 8, the energy in the environment can be fully utilized, thereby improving the utilization rate of resources. In addition, the piezoelectric ceramics 2 and PVDF piezoelectric film 3 can serve as backup for each other. When one of them has a problem, the other can still power the oil mist sensor 8, thereby ensuring the stability of the power supply device during use.

[0043] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0044] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0045] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A power supply device, characterized in that: include: Mounting bracket; A piezoelectric ceramic, used for converting acoustic energy into electrical energy, wherein the piezoelectric ceramic is disposed on the mounting bracket and is electrically connected to an electrical device mounted on the mounting bracket to transmit the electrical energy to the electrical device; The PVDF piezoelectric film is used to convert wind energy and / or vibration energy into the electrical energy. The PVDF piezoelectric film is arranged on the mounting bracket and is electrically connected to the electrical device to transmit the electrical energy to the electrical device.

2. The power supply device according to claim 1, characterized in that: The mounting bracket is provided with a groove, and the piezoelectric ceramic is arranged in the groove.

3. The power supply device according to claim 2, characterized in that: A reflection structure for reflecting sound is arranged on the peripheral side of the groove.

4. The power supply device according to claim 3, characterized in that: The reflective structure is constructed as a columnar structure perpendicular to the plane where the groove is located. There are multiple reflective structures, and the multiple reflective structures are arranged at intervals along the outer peripheral side of the groove.

5. The power supply device according to claim 1, characterized in that: One end of the PVDF piezoelectric film is connected to the edge of the mounting bracket, and the other end is extended to a side away from the mounting bracket.

6. The power supply device according to any one of claims 1 to 5, characterized in that: The mounting bracket includes a first side panel and a second side panel, the first side panel and the second side panel are vertically arranged to form a mounting space, and the side of the first side panel and / or the second side panel close to the mounting space is used to mount the electrical device; the piezoelectric ceramic is arranged on the side of the first side panel or the second side panel away from the mounting space, the PVDF piezoelectric film is arranged on the end of the first side panel away from the second side panel, or the PVDF piezoelectric film is arranged on the end of the second side panel away from the first side panel.

7. The power supply device according to claim 6, characterized in that: The piezoelectric ceramic and the PVDF piezoelectric film are both arranged on the first side plate, and the second side plate is used for mounting the electrical device.

8. The power supply device according to claim 7, characterized in that: The mounting bracket further includes a connecting portion, and the connecting portion is disposed on the second side plate; The connecting portion is configured as a connecting hole. There are a plurality of connecting holes, and the plurality of connecting holes are spaced apart along the circumference of the second side plate.

9. An oil mist monitoring device, characterized in that: It comprises an oil mist sensor and a power supply device according to any one of claims 1 to 8, wherein the oil mist sensor is the electrical component.

10. A generator, characterized in that: Including the oil mist monitoring device as described in claim 9.

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