Spherical strut structure of guide bearing of hydraulic generator

Abstract

The invention discloses a wheel generator guide bearing spherical surface supporting column structure which comprises a base, a water wheel, a rotating shaft and a plurality of supporting assemblies, the water wheel is arranged in the base and can rotate around the vertical direction relative to the base, one end of the rotating shaft is arranged in the base in a penetrating mode and connected with the water wheel, and the other end of the rotating shaft is connected with the supporting assemblies. The multiple supporting assemblies are arranged in the base and are arranged at intervals in the circumferential direction of the rotating shaft, each supporting assembly comprises a support, a first check block, a second check block, a bearing bush and a supporting plate, the supports are arranged on the supporting assemblies, the first check blocks and the second check blocks are arranged on the supports at intervals in the circumferential direction of the rotating shaft, and clamping grooves are defined by the first check blocks, the second check blocks and the supports; a groove is formed in the side, close to the support, of the bearing bush, and the supporting plate is located between the support and the bearing bush. The spherical strut structure of the guide bearing of the wheel generator has the advantages of simple structure, long service life and the like.

Description

Technical Field

[0001] This invention relates to the field of hydropower generation, specifically to a spherical support structure for a guide bearing of a hydro-generator. Background Technology

[0002] A hydroelectric generator is a power generation device that uses a hydroelectric turbine as a prime mover to efficiently convert water energy into electrical energy. Its working principle is as follows: when water flows through the turbine, the turbine converts the water energy into mechanical energy, manifested as the rotational motion of its shaft, through the kinetic and potential energy of the water flow. Subsequently, the turbine shaft is mechanically connected to the generator rotor, and through the principle of electromagnetic induction, the rotor's mechanical energy is further converted into electrical energy and output.

[0003] In related technologies, the bearings in hydro-generators have short service life and high failure rate. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of the present invention propose a spherical support structure for a hydro-generator guide bearing with a long service life and a low failure rate.

[0006] The spherical support structure of the guide bearing of the hydro-generator according to an embodiment of the present invention includes: a base and a water turbine, the water turbine being disposed within the base and rotatable relative to the base in a vertical direction; a rotating shaft, one end of which passes through the base and is connected to the water turbine, so that the water turbine drives the rotating shaft to rotate, and the other end of which passes outside the base and is adapted to be connected to a power generation device, so that the rotating shaft drives the power generation device to rotate to drive the power generation device to generate electricity; and a plurality of support components, all of which are disposed within the base and circumferentially spaced around the rotating shaft, each support component including a bracket. The bracket comprises a first stop block, a second stop block, a bearing bush, and a support plate. The bracket is mounted on the support assembly. The first stop block and the second stop block are circumferentially spaced on the bracket along the rotating shaft. The first stop block, the second stop block, and the bracket define a clamping groove. The bearing bush is disposed between the bracket and the rotating shaft, and a groove is provided on the side of the bearing bush adjacent to the bracket. The support plate is located between the bracket and the bearing bush. One side of the support plate passes through the clamping groove, and the other side of the support plate passes through the groove. The bearing bush abuts against the rotating shaft to support the rotating shaft.

[0007] The spherical support structure of the hydro-generator guide bearing of the present invention forms a groove by means of the first stop and the second stop to form a circumferential positioning of the support plate, which reduces the force borne by the bolts, reduces the risk of bolt breakage due to long-term uneven stress, improves the service life of the support components, and reduces the failure rate of the support components.

[0008] In some embodiments, the support assembly further includes a top plate and a drive member. The top plate is disposed at the upper end of the bracket and connected to the bracket. The drive member passes through the top plate and is connected to the support plate so that the drive member drives the support plate to move in the vertical direction.

[0009] In some embodiments, the support assembly further includes a connector, wherein the top plate and the bracket are spaced apart in the vertical direction and the top plate is connected to the bracket via the connector.

[0010] In some embodiments, there are multiple connectors, which are spaced apart along the width direction of the bracket and disposed between the top plate and the bracket. The upper and lower ends of the connectors are respectively connected to the top plate and the bracket.

[0011] In some embodiments, the drive component includes a bolt, a first nut, and a second nut. The bolt passes through the top plate and is connected to the support plate. Both the first nut and the second nut pass through the bolt, and the top plate is located between the first nut and the second nut, so that the bolt is mounted on the top plate via the first nut and the second nut.

[0012] In some embodiments, the groove and the clamping slot are arranged opposite each other at a radial distance along the axis of rotation in a projection plane orthogonal to the axial direction of the rotating shaft.

[0013] In some embodiments, the bearing bush is located within the clamping groove in a projection plane orthogonal to the radial direction of the axis of rotation.

[0014] In some embodiments, the width of the clamping groove is 1mm-2mm larger than the width of the support plate.

[0015] In some embodiments, a plurality of the support components are arranged at equal intervals along the circumference of the axis of rotation.

[0016] In some embodiments, the outer peripheral surface of the support component is coated with an anti-corrosion coating. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the spherical support structure of the guide bearing of the hydro-generator according to an embodiment of the present invention.

[0018] Figure 2This is a schematic diagram of the support assembly of the spherical support column structure of the hydro-generator guide bearing according to an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the installation of the support assembly of the spherical support column structure of the hydro-generator guide bearing according to an embodiment of the present invention.

[0020] Figure 4 This is a schematic diagram of the support structure of the spherical support column of the hydro-generator guide bearing according to an embodiment of the present invention.

[0021] Figure 5 This is a side view of the support structure of the spherical support column of the hydro-generator guide bearing according to an embodiment of the present invention.

[0022] 100. Spherical support structure for guide bearings of hydro-generators; 1. Base; 2. Rotating shaft; 3. Support assembly; 31. First stop block; 32. Second stop block; 33. Bearing bush; 34. Support plate; 35. Top plate; 36. Drive component; 361. Bolt; 362. First nut; 363. Second nut; 37. Connector; 38. Bracket. Detailed Implementation

[0023] 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.

[0024] The spherical support structure of the guide bearing of the hydro-generator according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0025] 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.

[0026] The following description, with reference to the accompanying drawings, describes a spherical support structure 100 for a hydro-generator guide bearing according to an embodiment of the present invention.

[0027] like Figures 1-5 As shown, the spherical support structure 100 of the hydro-generator guide bearing according to an embodiment of the present invention includes a base 1, a hydro-generator (not shown in the figure), a rotating shaft 2, and a plurality of support components 3.

[0028] The water turbine is housed within the base 1 and is rotatable relative to the base 1 in the vertical direction. Specifically, as shown... Figure 1As shown, the base 1 is generally cylindrical and has multiple openings. The water wheel is set inside the base 1 and can rotate in the vertical direction inside the base 1. When water with a certain kinetic energy flows in through the openings on the base 1, the impact force of the water flow acts on the blades of the water wheel, thereby driving the water wheel to rotate in the vertical direction, so that the energy of the water flow is converted into the mechanical energy of the water wheel.

[0029] One end of the rotating shaft 2 passes through the base 1 and is connected to the water turbine, so that the water turbine drives the rotating shaft 2 to rotate. The other end of the rotating shaft 2 passes out of the base 1 and is adapted to be connected to the power generation device, so that the rotating shaft 2 drives the power generation device to rotate and generate electricity. Specifically, as shown in the figure... Figure 1 As shown, the rotating shaft 2 is a vertical shaft extending in the up-down direction. The rotating shaft 2 is mounted on the base 1 through bearings, and the lower end of the rotating shaft 2 is connected to the water turbine. The upper end of the water turbine is connected to the power generation device. The water turbine drives the power generation device to generate electricity through the rotating shaft 2.

[0030] Multiple support components 3 are disposed within the base 1 and spaced circumferentially around the rotating shaft 2. Each support component 3 includes a bracket 38, a first stop 31, a second stop 32, a bearing shell 33, and a support plate 34. The bracket 38 is mounted on the base 1. The first stop 31 and the second stop 32 are spaced circumferentially on the bracket 38 along the rotating shaft 2. The first stop 31, the second stop 32, and the bracket 38 define a clamping groove. The bearing shell 33 is disposed between the bracket 38 and the rotating shaft 2, and a groove is provided on the side of the bearing shell 33 adjacent to the bracket 38. The support plate 34 is located between the bracket 38 and the bearing shell 33, with one side of the support plate 34 passing through the clamping groove and the other side passing through the groove. The bearing shell 33 abuts against the rotating shaft 2 to support it. Specifically, as shown... Figures 1-4 As shown, multiple support components 3 are arranged in the base 1 and spaced apart circumferentially along the shaft 2. The bracket 38 can be fixedly installed on the base 1 by screws or bolts. The first stop block 31 and the second stop block 32 are spaced apart on the base 1 in the left and right directions to form a clamping groove. The bearing bush 33 is arranged between the bracket 38 and the shaft 2, and the inner circumferential surface of the bearing bush 33 abuts against the shaft 2. The bearing bush 33 provides uniform and stable support force to the shaft 2, reducing the vibration and friction of the shaft 2 during high-speed rotation. The outer circumferential surface of the bearing bush 33 is provided with a groove. The support plate 34 is a vertical plate extending in the up and down direction. A part of the support plate 34 passes through the clamping groove, and the other part of the support plate 34 is located in the groove. The support plate 34 provides solid and stable support to the bearing bush 33, thereby ensuring that the bearing bush 33 can abut against the shaft 2 tightly and evenly, effectively dispersing the load generated by the shaft 2 during operation, greatly reducing the vibration and offset of the shaft 2, and ensuring the long-term stable and efficient operation of the hydro-generator.

[0031] According to the inventors' research, in related technologies, the bearing shell 33 is typically fixed to the bracket 38 using M820 bolts 361. When the generator is in operation, the M820 bolts 361 installed on the bearing shell 33 bear the circumferential force generated by the unit's rotation. Under the combined action of multiple factors such as electromagnetic imbalance force, mechanical imbalance force, and complex and variable operating conditions, the bolt 361 is subjected to unbalanced circumferential force for a long time. Over time, the bolt 361 is prone to fatigue damage and even fracture. This not only significantly shortens the service life of the M820 bolt 361 itself, but also further reduces the service life of the bearing shell 33, significantly increasing the equipment failure rate.

[0032] The spherical support structure 100 of the hydro-generator guide bearing of the present invention is provided with a support component 3. The support plate 34 is circumferentially positioned by forming a clamping groove through the first stop 31 and the second stop 32. Compared with related technologies, the force that originally acted directly on the bolt 361 is transferred to the first stop 31 and the second stop 32, which reduces the force borne by the bolt 361, reduces the risk of the bolt 361 breaking due to long-term uneven stress, improves the service life of the support component 3, and reduces the failure rate of the support component 3.

[0033] In some embodiments, the support assembly 3 further includes a top plate 35 and a driving member 36. The top plate 35 is disposed at the upper end of the bracket 38 and connected to the bracket 38. The driving member 36 passes through the top plate 35 and is connected to the support plate 34, so that the driving member 36 drives the support plate 34 to move in the vertical direction. Specifically, as Figure 1 and Figure 2 As shown, the top plate 35 is located at the upper end of the bracket 38 and is connected to the bracket 38. The driving member 36 passes through the top plate 35 and can move up and down on the top plate 35. The lower end of the driving member 36 is connected to the support plate 34, so that the driving member 36 drives the support plate 34 to move up and down, so that the support member is installed in the groove and the clamping groove.

[0034] In some embodiments, the support assembly 3 further includes a connector 37, wherein the top plate 35 and the bracket 38 are spaced apart in the vertical direction, and the top plate 35 is connected to the bracket 38 via the connector 37. Specifically, as Figures 1-5 As shown, the connecting rod of the connector 37 extends in the vertical direction. The upper end of the connector 37 is connected to the top plate 35, and the lower end of the connector 37 is connected to the bracket 38, so that the top plate 35 is located outside the base 1 through the connector 37, which prevents the support plate 34 from interfering with the top plate 35 when the support plate 34 is installed.

[0035] In some embodiments, there are multiple connectors 37, which are spaced apart along the width direction of the bracket 38 and disposed between the top plate 35 and the bracket 38. The upper and lower ends of the connectors 37 are connected to the top plate 35 and the bracket 38, respectively. Thus, the installation stability of the top plate 35 is improved by using multiple connectors 37.

[0036] In some embodiments, the drive member 36 includes a bolt 361, a first nut 362, and a second nut 363. The bolt 361 passes through the top plate 35 and is connected to the support plate 34. The first nut 362 and the second nut 363 both pass through the bolt 361, and the top plate 35 is located between the first nut 362 and the second nut 363, so that the bolt 361 is mounted on the top plate 35 through the first nut 362 and the second nut 363. Specifically, as Figure 2 As shown, the top plate 35 has a through hole that runs vertically through the top plate 35. The bolt 361 passes through the through hole and moves vertically within the through hole. The first nut 362 and the second nut 363 are both threaded onto the bolt 361 and are threaded into the bolt 361. The top plate 35 is located between the first bolt 361 and the second bolt 361 and clamps the top plate 35. The lower end of the bolt 361 is connected to the support plate 34. Thus, the support plate 34 is mounted on the bracket 38 by the bolt 361, the first nut 362 and the second nut 363. When it is necessary to install and remove the support plate 34, the first nut 362 and the second nut 363 are loosened, thereby driving the bolt 361 up and down to adjust the position of the support plate 34.

[0037] In some embodiments, in a projection plane orthogonal to the axial direction of the rotating shaft 2, the groove and the clamping groove are arranged opposite each other at a radial distance along the rotating shaft 2. Specifically, the groove and the clamping groove are arranged opposite each other at a distance in the inward and outward directions, which allows one side of the support plate 34 to be inserted into the clamping groove and the other side into the groove of the bearing bush 33, reducing the adjustment time and difficulty during installation, avoiding repeated adjustments due to inaccurate positioning, significantly improving installation efficiency, and reducing the installation and manufacturing cost of the spherical support structure 100 of the hydro-generator guide bearing.

[0038] In some embodiments, the bearing bush 33 is located within a groove in a radial projection plane orthogonal to the rotation axis 2. Specifically, the vertical dimension of the groove is larger than the vertical dimension of the bearing bush 33, allowing the support plate 34 to move vertically within the groove and into the recess, thereby making the support assembly 3 more rationally positioned.

[0039] In some embodiments, the width of the clamping groove is 1mm-2mm larger than the width of the support plate 34. Specifically, the difference between the width of the clamping groove and the width of the support plate 34 can be any one of 1mm, 1.4mm, 1.6mm, 1.8mm and 2mm, so that the support plate 34 is in clearance fit with the clamping groove, allowing the support plate 34 to move downward within the clamping groove.

[0040] In some embodiments, multiple support components 3 are arranged at equal intervals along the circumference of the shaft 2. Since the shaft 2 is subjected to forces from various directions, including its own weight, transmission torque, and forces generated by external working loads, arranging the support components 3 at equal intervals allows these loads to be evenly distributed across the support points, ensuring that the load borne by each support component 3 is relatively balanced, thereby improving the overall load-bearing capacity and stability of the shaft 2.

[0041] In some embodiments, the outer peripheral surface of the support component 3 is coated with an anti-corrosion coating. This anti-corrosion coating improves the service life of the support component 3.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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 that the first feature is at a higher horizontal level than 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 that the first feature is at a lower horizontal level than the second feature.

[0046] 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.

[0047] 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 spherical support structure for a guide bearing of a hydro-generator, characterized in that, include: A base and a waterwheel, wherein the waterwheel is disposed within the base and is rotatable relative to the base in the vertical direction; A rotating shaft, one end of which passes through the base and is connected to the water turbine so that the water turbine drives the rotating shaft to rotate, and the other end of which passes out of the base and is adapted to be connected to a power generation device so that the rotating shaft drives the power generation device to rotate to drive the power generation device to generate electricity; Multiple support components are disposed within the base and spaced circumferentially around the pivot. Each support component includes a bracket, a first stop, a second stop, a bearing, and a support plate. The bracket is disposed on the base. The first and second stops are spaced circumferentially on the bracket along the pivot. The first stop, the second stop, and the bracket define a clamping groove. The bearing is disposed between the bracket and the pivot, and a groove is provided on the side of the bearing adjacent to the bracket. The support plate is located between the bracket and the bearing, with one side of the support plate passing through the clamping groove and the other side of the support plate passing through the groove. The bearing abuts against the pivot to support the pivot.

2. The spherical support structure for the guide bearing of a hydro-generator according to claim 1, characterized in that, The support assembly also includes a top plate and a driving component. The top plate is located at the upper end of the bracket and connected to the bracket. The driving component passes through the top plate and is connected to the support plate so that the driving component drives the support plate to move in the vertical direction.

3. The spherical support structure for the guide bearing of a hydro-generator according to claim 2, characterized in that, The support assembly also includes a connector, wherein the top plate and the bracket are spaced apart in the vertical direction and the top plate is connected to the bracket through the connector.

4. The spherical support structure for the guide bearing of a hydro-generator according to claim 3, characterized in that, There are multiple connectors, which are spaced apart along the width direction of the bracket and located between the top plate and the bracket. The upper and lower ends of each connector are connected to the top plate and the bracket, respectively.

5. The spherical support structure for the guide bearing of a hydro-generator according to claim 2, characterized in that, The driving component includes a bolt, a first nut, and a second nut. The bolt passes through the top plate and is connected to the support plate. The first nut and the second nut both pass through the bolt, and the top plate is located between the first nut and the second nut, so that the bolt is mounted on the top plate through the first nut and the second nut.

6. The spherical support structure for the guide bearing of a hydro-generator according to claim 1, characterized in that, In a projection plane orthogonal to the axial direction of the rotating shaft, the groove and the clamping slot are arranged opposite each other at a radial distance along the rotating shaft.

7. The spherical support structure for the guide bearing of a hydro-generator according to claim 1, characterized in that, The bearing bush is located within the groove in a projection plane orthogonal to the radial direction of the rotating shaft.

8. The spherical support structure for the guide bearing of a hydro-generator according to claim 1, characterized in that, The width of the clamping groove is 1mm-2mm larger than the width of the support plate.

9. The spherical support structure for the guide bearing of a hydro-generator according to claim 1, characterized in that, The plurality of the support components are arranged at equal intervals along the circumference of the axis of rotation.

10. The spherical support structure for the guide bearing of a hydro-generator according to claim 1, characterized in that, The outer peripheral surface of the support component is coated with an anti-corrosion coating.

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