Generator and power generation system and detection system

Abstract

The application discloses a generator, a power generation system and a detection system. The generator comprises a bearing, a mounting plate and a dielectric film. The bearing has an inner ring, an outer ring, rolling bodies and a retainer. The inner ring is rotatably sleeved in the outer ring and is spaced apart from the outer ring in the inner-outer direction. The retainer is rotatably arranged between the inner ring and the outer ring. The rolling bodies are rotatably arranged in the retainer and between the inner ring and the outer ring. The mounting plate is arranged between the inner ring and the outer ring and extends along the circumference of the outer ring. The dielectric film is arranged on the side of the mounting plate facing the bearing and is connected with the insulating plate. At least part of the dielectric film is spaced apart from the electrode plate in the axial direction of the outer ring. The dielectric film has an elastic force moving towards the retainer. The generator has the advantages of simple structure, low manufacturing cost and long service life.

Description

Technical Field

[0001] This invention relates to the field of power generation equipment, specifically to a generator, a power generation system, and a detection system. Background Technology

[0002] Rolling bearings are essential components in large rotating machinery and play a key role in the efficient operation, stability, and reliability of the system. Intelligent rolling bearings with integrated triboelectric generators are of great significance for the condition monitoring and operation and maintenance of mechanical equipment.

[0003] Among related technologies, bearing generators have high processing and manufacturing costs and low operating efficiency. Summary of the Invention

[0004] This utility model is based on the inventor's discovery and understanding of the following facts and problems:

[0005] In related technologies, bearing generators typically involve installing friction materials or vapor-deposited coatings on rotating parts, which significantly alters the original structure and can easily introduce unbalanced excitation, affecting the normal operation of the bearings and resulting in low generator efficiency and short service life.

[0006] The present invention aims to at least partially solve one of the technical problems in the related art.

[0007] Therefore, embodiments of the present invention propose a generator with a simple structure and long service life.

[0008] The embodiments of the present invention propose a low-cost and high-efficiency power generation system.

[0009] The embodiments of the present invention propose a detection system with high detection efficiency and low detection cost.

[0010] A generator according to an embodiment of the present invention includes: a bearing having an inner ring, an outer ring, rolling elements, and a cage; the inner ring being rotatably fitted inside the outer ring and spaced apart from the outer ring in an inward direction; the cage being rotatably disposed between the inner ring and the outer ring; the rolling elements being rotatably disposed within the cage and located between the inner ring and the outer ring; the bearing having a first side and a second side in an axial direction of the outer ring; and a mounting plate disposed on at least one of the first side and the second side; the mounting plate being disposed between the inner ring and the outer ring and extending circumferentially along the outer ring; the mounting plate including an insulating plate and an electrode plate connected in sequence; the electrode plates being radially spaced from the cage along the outer ring; and the outer ring and... The inner rings are spaced apart from the electrode plates in the inward and outward directions. A dielectric film is disposed on the side of the mounting plate facing the bearing and connected to the insulating plate. At least a portion of the dielectric film is axially spaced from the electrode plates in the outer ring. The dielectric film has an elastic force that allows it to move towards the cage. The dielectric film has a first position and a second position in the inward and outward directions. In the first position, at least a portion of the dielectric film abuts against the cage, so that at least a portion of the dielectric film approaches the electrode plates to generate electrostatic induction between the dielectric film and the electrode plates. In the second position, at least a portion of the dielectric film separates from the cage, so that the dielectric film moves away from the electrode plates under the action of the elastic force.

[0011] The generator of this invention is equipped with bearings, mounting plates, and dielectric films. Under the condition that the bearings are working normally and the structure is intact, the electrode plates and dielectric films are electrostatically induced to generate electricity. It has the advantages of low manufacturing cost, simple structure, and stable and adjustable electrical signals.

[0012] In some embodiments, there are multiple insulating plates and multiple electrode plates, which are spaced apart circumferentially along the outer ring, and adjacent electrode plates are electrically connected. At least one insulating plate is disposed between two adjacent electrode plates, and both ends of the dielectric film are respectively disposed on the insulating plate. The dielectric film and the electrode plates are axially spaced apart in the outer ring.

[0013] In some embodiments, the generator further includes a bearing sleeve and a fixing plate, the bearing sleeve being fitted onto the outer circumferential surface of the outer ring, the fixing plate being connected to the bearing sleeve by fasteners, and the dielectric film being located between the fixing plate and the bearing.

[0014] In some embodiments, the inner circumferential surface of the bearing sleeve is provided with a plurality of through holes that penetrate the bearing sleeve along the axial direction of the outer ring, and the plurality of through holes are spaced apart along the circumferential direction of the bearing sleeve so that the bearing can be installed in the bearing sleeve. The outer circumferential surface of the bearing sleeve is provided with a plurality of threaded holes that penetrate the bearing sleeve in the inward and outward directions so that the fastener abuts against the outer circumferential surface of the bearing through the threaded holes.

[0015] In some embodiments, the dielectric film includes a first segment, a second segment, and a third segment connected in sequence, the first segment and the third segment extending along the inner and outer sides and being mountable on an insulating plate by fasteners, the second segment being an arcuate plate protruding toward the retainer and the second segment and the electrode plate being spaced apart axially from each other on the outer ring.

[0016] In some embodiments, the cage includes a plurality of mounting portions and a plurality of connecting plates. The plurality of mounting portions are spaced apart circumferentially along the outer ring. The connecting plates are disposed between and connected to two adjacent mounting portions. Each mounting portion has a mounting cavity extending through it in the inward and outward directions. The rolling element is rotatably disposed within the mounting cavity. In a first position, the outer peripheral surface of the mounting portion abuts against at least a portion of the dielectric film. In a second position, the outer peripheral surface of the mounting portion and the connecting plates are spaced apart axially along the outer ring.

[0017] A power generation system according to an embodiment of the present invention includes: a power source; a first connecting shaft connected to the power source so that the power source drives the first connecting shaft to rotate; and a power generation assembly including a bearing housing and a generator, wherein the generator is any of the generators described in the above embodiments, the generator is disposed in the bearing housing, and the first connecting shaft is connected to either the inner ring or the outer ring of the bearing of the generator so that the first connecting shaft drives either the inner ring or the outer ring to rotate.

[0018] In some embodiments, there are multiple power generation components, which are arranged sequentially along the axial direction of the first connecting shaft, and one of the inner rings or the outer rings of the bearings of the multiple power generation components is connected to the first connecting shaft.

[0019] The detection device according to an embodiment of the present invention includes: a second connecting shaft, one end of which is adapted to be connected to the rotating device so that the rotating device drives the second connecting shaft to rotate; a generator, which is any of the generators described in the above embodiments, wherein the second connecting shaft is connected to either the inner ring or the outer ring of a bearing of the generator; and a detection component, which is electrically connected to the electrode plate of the generator so that the detection component detects the electrical signal generated by the generator to detect the operating state of the rotating device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the generator according to an embodiment of the present invention.

[0021] Figure 2 This is an exploded view of the generator according to an embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the mounting plate of the generator according to an embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the dielectric film structure of the generator according to an embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the structure of the generator cage according to an embodiment of the present invention.

[0025] Figure 6 This is a schematic diagram of the operation of the generator according to an embodiment of the present invention.

[0026] Generator 100;

[0027] Bearing 1; Inner ring 11; Outer ring 12; Cage 14; Mounting part 141; Mounting cavity 1411; Connecting plate 142; Mounting plate 2; Insulating plate 21; Electrode plate 22; Dielectric film 3; First section 31; Second section 32; Third section 33; Bearing sleeve 4; Through hole 41; Fixing plate 5; First plate 51; Second plate 52; Resistor 6; Rotation direction of cage 7; Current direction 8. Detailed Implementation

[0028] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0029] The generator according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0030] like Figure 1-6 As shown, the generator 100 according to an embodiment of the present invention includes a bearing 1, a mounting plate 2, and a dielectric film 3.

[0031] Bearing 1 has an inner ring 11, an outer ring 12, rolling elements, and a cage 14. The inner ring 11 is rotatably fitted inside the outer ring 12 and spaced apart from the outer ring 12 in the inward and outward directions. The cage 14 is rotatably disposed between the inner ring 11 and the outer ring 12. The rolling elements are rotatably disposed within the cage 14 and located between the inner ring 11 and the outer ring 12. Bearing 1 is positioned in the axial direction of the outer ring 12 (e.g., ...). Figure 1 It has a first side and a second side in the front-back direction (as shown). Specifically, as... Figure 1 As shown, bearing 1 is a rolling bearing. The inner ring 11 is fitted inside the outer ring 12 and the inner ring 11 and the outer ring 12 can rotate relative to each other. The cage 14 of bearing 1 is a wave-shaped cage 14 and is located between the inner ring 11 and the outer ring 12 of bearing 1. The rolling elements are installed in the cage 14. When one of the inner ring 11 and the outer ring 12 rotates, it will drive the rolling elements to roll between the inner ring 11 and the outer ring 12, thereby driving the cage 14 to rotate between the inner ring 11 and the outer ring 12. The front end face of bearing 1 is the first side, and the rear end face of bearing 1 is the second side.

[0032] Mounting plate 2 is disposed on at least one of the first and second sides. Mounting plate 2 is located between the inner ring 11 and the outer ring 12 and extends circumferentially along the outer ring 12. Mounting plate 2 includes an insulating plate 21 and an electrode plate 22 connected in sequence. The electrode plate 22 and the retainer 14 are radially spaced apart along the outer ring 12. The outer ring 12 and the inner ring 11 are respectively spaced apart from the electrode plate 22 in the inward and outward directions. Specifically, as shown... Figure 3 As shown, the mounting plate 2 is an annular plate. The mounting plate 2 can be set on the front end face of the bearing 1, or on the rear end face of the bearing 1, or on both the front end face and the rear end face of the bearing 1, depending on the actual situation. The mounting plate 2 includes an insulating plate 21 and an electrode plate 22 connected in sequence. The electrode plate 22 is located between the inner ring 11 and the outer ring 12 and does not contact either the inner ring 11 or the outer ring 12. The electrode plate 22 and the cage 14 are spaced apart in the front-back direction. The insulating plate 21 can be set according to the actual situation. For example, the insulating plate 21 can be snapped between the inner ring 11 and the outer ring 12.

[0033] A dielectric film 3 is disposed on the side of the mounting plate 2 facing the bearing 1 and connected to the insulating plate 21. At least a portion of the dielectric film 3 is axially spaced from the electrode plate 22 on the outer ring 12. The dielectric film 3 has an elastic force that allows it to move toward the retainer 14. The dielectric film 3 has a first position and a second position in the inward and outward directions. In the first position, at least a portion of the dielectric film 3 abuts against the retainer 14 so that at least a portion of the dielectric film 3 approaches the electrode plate 22 to generate electrostatic induction between the dielectric film 3 and the electrode plate 22. In the second position, at least a portion of the dielectric film 3 separates from the retainer 14 so that the dielectric film 3 moves away from the electrode plate 22 under the action of the elastic force. Specifically, as shown... Figure 1-5As shown, the dielectric film 3 is a polymer film material and is disposed between the mounting plate 2 and the retainer 14. A part of the dielectric film 3 is fixedly mounted on the insulating plate 21, and another part of the dielectric film 3 has an elastic force that moves towards the retainer 14 in the front-back direction. The retainer 14 is rotatable relative to the mounting plate 2. When the bearing 1 rotates, the retainer 14 will repeatedly squeeze the dielectric film 3 as the bearing 1 rotates, so that the dielectric film 3 moves between a first position and a second position in the inward and outward directions. In the first position, the retainer 14 squeezes the dielectric film 3, so that the dielectric film 3 and the electrode plate 22 generate current through electrostatic induction. In the second position, the dielectric film 3 separates from the electrode plate 22, and no electrical signal is generated at this time. When the dielectric film 3 separates from the retainer 14, the dielectric film 3 moves towards the retainer 14 under the action of the elastic force, so that the retainer 14 and the dielectric film 3 are squeezed.

[0034] The generator 100 of this embodiment of the invention is provided with a bearing 1, a mounting plate 2 and a dielectric film 3. Without making any changes to the structure of the bearing 1 and ensuring the normal operation of the bearing 1, the electrode plate 22 of the mounting plate 2 and the dielectric film 3 are electrostatically induced by the squeezing effect of the bearing 1 cage 14 on the dielectric film 3, thereby realizing the power generation function of the generator 100. This maintains the structural integrity of the bearing 1, has low processing and manufacturing costs, simple structure and stable and adjustable electrical signal.

[0035] In some embodiments, there are multiple insulating plates 21 and electrode plates 22. The multiple electrode plates 22 are spaced apart circumferentially along the outer ring 12, and adjacent electrode plates 22 are electrically connected. At least one insulating plate 21 is disposed between two adjacent electrode plates 22. The two ends of the dielectric film 3 are respectively disposed on the insulating plate 21, and the dielectric film and electrode plates 22 are axially spaced apart on the outer ring 12. Specifically, as shown... Figure 2-3 As shown, the mounting plate 2 can be an annular electrode plate 22, and the electrode plate 22 is provided with multiple mounting holes that penetrate the electrode plate 22. An electrode plate 22 is formed between two adjacent mounting holes. The multiple mounting holes are spaced apart along the circumference of the electrode plate 22. The insulating plate 21 can be installed in the mounting holes. The two ends of the dielectric film 3 can be installed on the insulating plates 21 on both sides of the electrode plate 22 by fasteners, so that the mounting plate 2 is set more reasonably.

[0036] In some embodiments, the generator 100 further includes a bearing sleeve 4 and a fixing plate 5. The bearing sleeve 4 is fitted onto the outer peripheral surface of the outer ring 12, and the fixing plate 5 is connected to the bearing sleeve 4 by fasteners. The dielectric film 3 is located between the fixing plate 5 and the bearing 1. Specifically, as Figure 1-2As shown, the bearing sleeve 4 is fitted onto the outer circumferential surface of the outer ring 12 and fixed to the outer ring 12. The fixing plate 5 includes a first plate 51 and a second plate 52. The first plate extends along the circumferential direction of the outer ring 12, and the second plate 52 extends along the inward and outward directions and is connected to the outer circumferential surface of the first plate 51. The mounting plate 2 is located between the first plate and the support frame and is fixed on the first plate 51. The second plate 52 can be fixed to the bearing sleeve 4 by fasteners, thereby not only providing a mounting base for the mounting plate 2, but also preventing the mounting plate 2 from rotating with the support frame.

[0037] In some embodiments, the inner circumferential surface of the bearing sleeve 4 is provided with a plurality of through holes 41 extending axially through the bearing sleeve 4 along the outer ring 12. The plurality of through holes 41 are spaced apart circumferentially around the bearing sleeve 4 so that the bearing 1 can be installed inside the bearing sleeve 4. The outer circumferential surface of the bearing sleeve 4 is provided with a plurality of threaded holes extending through the bearing sleeve 4 in the inward and outward directions so that fasteners abut against the outer circumferential surface of the bearing 1 through the threaded holes. Specifically, as shown... Figure 1-2 As shown, the inner circumferential surface of the bearing sleeve 4 is provided with a through hole 41 that runs through the bearing sleeve 4 in the front-to-back direction. The outer ring 12 of the bearing 1 is installed in the bearing sleeve 4 through multiple through holes 41, which also makes it convenient to remove the bearing 1 from the bearing sleeve 4. In addition, the threaded hole allows screws or bolts to pass through the threaded hole and abut against the outer circumferential surface of the bearing 1, so that the bearing 1 is fixed in the bearing sleeve 4 by fasteners.

[0038] In some embodiments, the dielectric film 3 includes a first segment 31, a second segment 32, and a third segment 33 connected in sequence. The first segment 31 and the third segment 33 extend inward and outward and can be mounted on the insulating plate 21 by fasteners. The second segment 32 is an arcuate film protruding toward the retainer 14, and the second segment 32 and the electrode plate 22 are spaced apart axially from each other on the outer ring 12. Specifically, as Figure 4 As shown, the second segment 32 is an arched arc shape. The first segment 31 is located at the left end of the second segment 32, and the second segment 32 is located at the right end of the second segment 32. The first segment 31 is located on the insulating plate 21 on the left side of the electrode plate 22 by fasteners, and the third segment 33 is located on the insulating plate 21 on the right side of the electrode plate 22 by fasteners. This makes the second segment 32 opposite to the electrode plate 22 and arched on the electrode plate 22. This makes the electrode plate 22 and the second segment 32 spaced apart in the front-back direction, making the dielectric film 3 more reasonably arranged.

[0039] In some embodiments, the cage 14 includes a plurality of mounting portions 141 and a plurality of connecting plates 142. The mounting portions 141 are spaced apart circumferentially along the outer ring 12. The connecting plates 142 are disposed between and connected to two adjacent mounting portions 141. Each mounting portion 141 has a mounting cavity 1411 extending through it in an inward or outward direction. A rolling element is rotatably disposed within the mounting cavity 1411. In a first position, the outer peripheral surface of the mounting portion 141 abuts against at least a portion of the dielectric film 3. In a second position, the outer peripheral surface of the mounting portion 141 and the connecting plates 142 are spaced apart axially along the outer ring 12. Specifically, as shown... Figure 5 As shown, the mounting part 141 is a circular plate, and the connecting plate 142 can be an arc-shaped plate extending circumferentially along the outer ring 12. The connecting plate 142 is disposed between the two mounting parts 141, and both ends of the connecting plate 142 are integrally formed with the two mounting parts 141 respectively. The rolling element can be rolled through the mounting cavity 1411 of the mounting part 141. The cage 14 is rotatably disposed between the outer ring 12 and the inner ring 11. When the outer ring 12 or the inner ring 11 rotates relative to each other, it can drive the rolling element to rotate in the mounting cavity 1411, thereby driving the cage 14 to rotate. During the rotation of the cage 14, the second section 32 of the dielectric film 3 will be repeatedly squeezed, thereby making the dielectric film 3 generate electricity.

[0040] In some embodiments, the generator 100 further includes a bracket (not shown in the figure), on which the bearing sleeve 4 is disposed. Specifically, the bracket can be fixed to the ground, and the bearing sleeve 4 can be fixed to the bracket, thereby providing a mounting base for the generator 100 through the bracket.

[0041] The power generation principle of the generator 100 in this embodiment of the invention is as follows:

[0042] Power generation principle: The dielectric film 3 is a high-molecular material with an arc-shaped film. During the rotation of the bearing 1, the cage 14 continuously and repeatedly presses against the dielectric film 3, causing the dielectric film 3 to repeatedly contact and rub against the electrode. During this process, according to the principle of electrostatic induction, the dielectric film 3 has a strong ability to gain electrons and is insulating, therefore a certain amount of negative charge always exists on its surface. Based on the above principle, the bearing 1 will be in the following four states during rotation:

[0043] State 1: The mounting part 141 of the retainer 14 begins to squeeze the second section 32 of the dielectric film 3, so that the second section 32 of the dielectric film 3 is in the first position, thereby causing a part of the second section 32 of the dielectric film 3 to begin to approach the electrode. Due to the electrostatic induction effect, positive charges are generated on the surface of the electrode plate 22, as shown in the figure, with two positive charges. At this time, current flows into the electrode.

[0044] State 2: The mounting part 141 of the retainer 14 completely squeezes the second section 32 of the dielectric film 3. The number of positive charges on the surface of the electrode plate 22 is equal to the number of negative charges on the surface of the second section 32 of the dielectric film 3. At this time, it is in electrostatic equilibrium and there is no current.

[0045] State 3: The mounting part 141 of the retainer 14 begins to separate from the second section 32 of the dielectric film 3. Due to the electrostatic induction effect, the positive charge on the surface of the electrode plate 22 is lost, and the current flows out.

[0046] State 4: The mounting part 141 of the retainer 14 is completely separated from the second section 32 of the dielectric film 3, and there is no positive charge or current on the surface of the electrode plate 22.

[0047] The power generation system according to an embodiment of the present invention includes a power source (not shown in the figure), a first connecting shaft (not shown in the figure), and a power generation component (not shown in the figure).

[0048] The first connecting shaft is connected to a power source so that the power source can drive the first connecting shaft to rotate. Specifically, one end of the first connecting shaft is connected to the power source, so that the power source can drive the first connecting shaft to rotate.

[0049] The power generation assembly includes a bearing housing and a generator 100. The generator 100 is any of the generators described in the above embodiments. The generator 100 is housed within the bearing housing. A first connecting shaft is connected to either the inner ring 11 or the outer ring 12 of the bearing 1 of the generator 100, so that the first connecting shaft drives either the inner ring 11 or the outer ring 12 to rotate. Specifically, the outer ring 12 of the bearing 1 can be installed within the bearing housing, and the other end of the first connecting shaft passes through the inner ring 11 of the bearing 1, causing the first connecting shaft to drive the inner ring 11 of the bearing 1 to rotate, thereby ensuring that the generator 100 can continuously generate electricity under the drive of the first connecting shaft.

[0050] The generator 100 of this invention has advantages such as stable power generation and stable and adjustable electrical signals.

[0051] It is worth noting that the embodiments of the present invention do not limit the power source, and it can be a kerosene engine, a diesel engine, etc.

[0052] In some embodiments, there are multiple power generation components, which are sequentially arranged along the axial direction of the first connecting shaft. Either the inner ring 11 or the outer ring 12 of the bearing 1 in each of the multiple power generation components is connected to the first connecting shaft. Specifically, to ensure power generation efficiency, there can be multiple power generation components. The generators 100 in the multiple power generation components are all mounted on the same first connecting shaft, and the dielectric films 3 in the multiple power generation components are spaced apart and opposite to each other along the axial direction of the first connecting shaft. The retainers 14 in the multiple power generation components are also spaced apart and opposite to each other along the axial direction of the first connecting shaft. This multiple power generation components improve the power generation efficiency of the power generation system and make the power generation system configuration more rational.

[0053] The detection device according to an embodiment of the present invention includes a second connecting shaft (not shown in the figure), a generator 100, and a detection component (not shown in the figure).

[0054] One end of the second connecting shaft is adapted to be connected to a rotating device so that the rotating device drives the second connecting shaft to rotate. Specifically, the second connecting shaft can be the first connecting shaft or the input shaft of the rotating device, so that the rotating device drives the second connecting shaft to rotate.

[0055] The generator 100 is any one of the generators described in the above embodiments. The second connecting shaft is connected to either the inner ring 11 or the outer ring 12 of the bearing 1 of the generator 100. The second connecting shaft can be connected to the generator 100 according to the actual situation. For example, the second connecting shaft can pass through the inner ring 11 of the bearing 1, or one end of the second connecting shaft has a groove, and the outer ring 12 of the bearing 1 passes through the groove, so that the second connecting shaft drives the inner ring 11 or the outer ring 12 of the bearing 1 to rotate.

[0056] The detection component is electrically connected to the electrode plate 22 of the generator 100 so that it can detect the electrical signal generated by the generator 100 to detect the operating status of the rotating equipment. As a result, the rotating equipment drives the bearing 1 of the generator 100 to rotate, causing the cage 14 of the bearing 1 to rotate. This causes the dielectric film 3 to undergo electrostatic induction with the electrode plate 22, generating an electrical signal that flows into the detection component. The detection component processes the extracted electrical signal to monitor the status of the rotating equipment.

[0057] The detection device of this invention has a simple structure, is easy to install, has low maintenance cost, and generates clear and obvious electrical signals, thus having the ability to solve the problem of fault detection in large rotating mechanical equipment.

[0058] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0059] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the horizontal height F of the first feature is higher than that of the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the horizontal height of the first feature is lower than that of the second feature.

[0062] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0063] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A generator, characterized in that, include: A bearing having an inner ring, an outer ring, rolling elements, and a cage, wherein the inner ring is rotatably fitted inside the outer ring and spaced apart from the outer ring in an inward and outward direction, the cage is rotatably disposed between the inner ring and the outer ring, the rolling elements are rotatably disposed inside the cage and located between the inner ring and the outer ring, and the bearing has a first side and a second side in the axial direction of the outer ring; The mounting plate is disposed on at least one of the first side and the second side, and is located between the inner ring and the outer ring and extends circumferentially along the outer ring. The mounting plate includes an insulating plate and an electrode plate connected in sequence. The electrode plate and the retainer are radially spaced apart along the outer ring, and the outer ring and the inner ring are spaced apart from the electrode plate in the inward and outward directions, respectively. A dielectric film is disposed on the side of the mounting plate facing the bearing and connected to the insulating plate. At least a portion of the dielectric film is axially spaced from the electrode plate on the outer ring. The dielectric film has an elastic force that allows it to move toward the cage. The dielectric film has a first position and a second position in the inward and outward directions. In the first position, at least a portion of the dielectric film abuts against the cage so that at least a portion of the dielectric film approaches the electrode plate to induce electrostatic induction between the dielectric film and the electrode plate. In the second position, at least a portion of the dielectric film separates from the cage so that the dielectric film moves away from the bearing under the action of the elastic force. The electrode plates, the insulating plate, and the electrode plates are all multiple, and the multiple electrode plates are spaced apart along the circumference of the outer ring. Adjacent electrode plates are electrically connected. At least one insulating plate is disposed between two adjacent electrode plates. The two ends of the dielectric film are respectively disposed on the insulating plate. The dielectric film and the electrode plates are spaced apart axially on the outer ring. The dielectric film includes a first segment, a second segment, and a third segment connected in sequence. The first segment and the third segment extend in the inward and outward directions and can be mounted on the insulating plate by fasteners. The second segment is an arc plate protruding toward the cage, and the second segment and the electrode plates are spaced apart axially on the outer ring.

2. The generator according to claim 1, characterized in that, It also includes a bearing sleeve and a fixing plate. The bearing sleeve is fitted onto the outer circumferential surface of the outer ring, and the fixing plate is connected to the bearing sleeve by fasteners. The dielectric film is located between the fixing plate and the bearing.

3. The generator according to claim 2, characterized in that, The inner circumferential surface of the bearing sleeve is provided with a plurality of through holes that penetrate the bearing sleeve along the axial direction of the outer ring. The plurality of through holes are spaced apart along the circumferential direction of the bearing sleeve so that the bearing can be installed in the bearing sleeve. The outer circumferential surface of the bearing sleeve is provided with a plurality of threaded holes that penetrate the bearing sleeve in the inward and outward directions so that the fasteners abut against the outer circumferential surface of the bearing through the threaded holes.

4. The generator according to claim 2, characterized in that, The cage includes multiple mounting portions and multiple connecting plates. The mounting portions are spaced apart circumferentially along the outer ring. The connecting plates are located between and connected to two adjacent mounting portions. Each mounting portion has a mounting cavity extending through it in the inward or outward direction. The rolling element is rotatably disposed within the mounting cavity. In the first position, the outer peripheral surface of the mounting portion abuts against at least a portion of the dielectric film. In the second position, the outer peripheral surface of the mounting portion and the connecting plates are spaced apart axially along the outer ring.

5. A power generation system, characterized in that, include, Power source; A first connecting shaft is connected to the power source so that the power source drives the first connecting shaft to rotate. A power generation assembly, comprising a bearing housing and a generator, wherein the generator is the generator described in any one of claims 1-4, the generator is disposed within the bearing housing, and a first connecting shaft is connected to either the inner ring or the outer ring of the bearing of the generator, so that the first connecting shaft drives either the inner ring or the outer ring to rotate.

6. The power generation system according to claim 5, characterized in that, There are multiple power generation components, which are arranged sequentially along the axial direction of the first connecting shaft. The inner ring or the outer ring of the bearing of each of the multiple power generation components is connected to the first connecting shaft.

7. A detection device, characterized in that, include, A second connecting shaft, one end of which is adapted to be connected to a rotating device so that the rotating device drives the second connecting shaft to rotate; A generator, wherein the generator is the generator described in any one of claims 1-4 above, and the second connecting shaft is connected to either the inner ring of the bearing of the generator or the outer ring of the bearing; A detection component is electrically connected to the electrode plates of the generator so that the detection component can detect the electrical signals generated by the generator to detect the operating status of the rotating equipment.

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