Reversible type pumped storage unit thrust bearing supporting structure with bearing bush capable of inclining automatically

Abstract

A reversible type pumped storage unit thrust bearing supporting structure with a bearing bush capable of inclining automatically comprises a base, the base is fixed to a lower foundation, an adjusting supporting column is installed in the middle and fixed to the base in a penetrating mode, the upper portion of the adjusting supporting column is fixedly connected with an elastic oil tank, supporting iron is installed in the middle of the elastic oil tank, and a universal shaft supporting column is installed on the supporting iron. The supporting iron is matched with the cardan shaft supporting column through a spherical pair, a tray is installed on the top of the cardan shaft supporting column, a spring protection device is arranged between the supporting iron and the tray, the supporting iron and the tray are fixedly connected together, a thrust bearing bush is fixed above the tray, and a plurality of horizontal oil through holes are evenly distributed in the lower portion of the supporting iron and communicated with an elastic oil tank. The elastic oil tank is filled with turbine oil; the thrust bearing supporting structure solves the problems that in the prior art, a supporting structure is complex, inclination is not flexible, and the height cannot be adjusted, the height of the thrust bearing supporting structure is adjustable, inclination is flexible, adjustment is convenient and fast, and the thrust bearing supporting structure is exquisite in design, simple in structure, high in practicability and wide in application range.

Description

Technical Field

[0001] The utility model relates to the technical field of thrust bearing support, in particular to a reversible pumped storage unit thrust bearing support structure with automatically tiltable bearing bushings. Background Art

[0002] The pumped storage unit is mainly composed of two systems: the generator motor and the water pump turbine. The generator motor must be supported by the thrust bearing in the axial direction. The thrust bearing is a key component that bears the weight of the rotating part of the entire unit and the water thrust. It is mainly composed of a thrust head, a thrust pad and a supporting structure. The thrust head is a rotating part and the thrust pad is a fixed part. As the capacity and speed of the unit continue to increase, the bearing capacity requirements of the thrust bearing are also increasing. In order to ensure the formation and rapid cooling of the dynamic pressure oil film of the bearing, the thrust bearing pad of the pumped storage unit is a block structure. When the unit rotates, an oil film will be generated between the thrust head mirror plate surface and the thrust pad contact surface to lubricate the relative movement of the unit rotor and stator. The structure used to support the thrust pad is a very critical part of the thrust bearing. At present, the common supporting structures of the thrust bearing of the pumped storage unit mainly include four structures: elastic oil tank, elastic disk, elastic column and spring cluster. The elastic oil tank support structure has the advantages of low precision in adjusting the height and levelness of each bearing surface during installation and the elastic oil tank automatically balancing the uneven load during operation, so it is widely used. However, once the elastic oil tank support structure in the prior art is installed, it is impossible to make necessary adjustments to the height of the thrust bearing, and it is also impossible to tilt flexibly to quickly adapt to the reversible pumped storage unit that requires frequent bidirectional operation.

[0003] For example, CN215682013U discloses a vertical turbine generator thrust bearing support structure, including a base, a mounting frame fixedly installed on the top of the base, an elastic oil tank provided on the top of the mounting frame, a lifting mechanism installed between the elastic oil tank and the mounting frame, a support iron fixedly installed inside the elastic oil tank, a support plate provided on the top of the support iron, a universal shaft fixedly connected between the support iron and the support plate, and a protective component connected between the universal shaft and the support iron. In the utility model, the overall height can be adjusted by setting the mounting frame and the lifting mechanism, thereby adjusting the height of the bearing pad; however, the supporting structure is complex, which is not conducive to the portable disassembly and assembly during the construction phase of the pumped storage unit and the flexible adjustment during the operation and maintenance phase.

[0004] Therefore, there is an urgent need for a thrust bearing support structure that is height-adjustable, flexible in tilting, and convenient to adjust. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a reversible pumped storage unit thrust bearing support structure with automatically tiltable bearing bushings, so as to solve the problems of the prior art that the support structure is complex, the height cannot be adjusted, and the inability to tilt flexibly.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is: a reversible pumped storage unit thrust bearing support structure with automatically tilted bearing shells, including a base, which is fixed on the lower foundation, with an adjusting pillar installed in the middle, the adjusting pillar is installed on the base, and the upper part is connected and fixed with the elastic oil tank, a support iron is installed in the middle of the elastic oil tank, a universal shaft pillar is installed on the support iron, the support iron and the universal shaft pillar are matched through a spherical pair, a tray is installed on the top of the universal shaft pillar, a spring protection device is arranged between the support iron and the tray, the two are connected and fixed together, and a thrust bearing shell is fixed above the tray.

[0007] In a preferred solution, grooves are provided in the middle of the base, a first threaded hole is provided in the center of the groove, an external thread is provided at one end of the adjustment pillar, the adjustment pillar is embedded in the lower groove, and is connected and fixed to the base through threads.

[0008] In a preferred solution, the outer ring of the other end of the adjusting support is configured as a regular hexagon or a regular quadrilateral structure.

[0009] In a preferred solution, bolt holes are arranged around the outer circumference of the base groove, the base is fixed to the lower foundation by bolts, and the lower foundation is provided with adjustment support installation and adjustment holes.

[0010] In the preferred scheme, they are installed in groups for use, and a number of horizontal oil holes are evenly distributed on the lower part of the support irons, which are connected to the elastic oil tank. The elastic oil tank is filled with turbine oil, and the horizontal oil holes on the support irons of the supporting structures within the group are interconnected to maintain the pressure balance in all directions in the elastic oil tank. The elastic oil tanks of the supporting structures between the groups are interconnected to form a communicating vessel to maintain the pressure balance in the elastic oil tanks of each supporting structure.

[0011] In a preferred embodiment, a group of protrusions are provided on the top of the tray, and a group of slots are provided on the bottom of the thrust bearing. The protrusions on the top of the tray are assembled with the slots on the bottom of the thrust bearing to fix the tray and the thrust bearing together.

[0012] In the preferred embodiment, the elastic oil tank includes an oil tank seat, an elastic middle part is fixed on the top of the oil tank seat, the elastic middle part includes several layers of elastic ring parts, a boss is arranged at the bottom of the oil tank seat, the boss is clamped in the upper groove of the base, a top base is fixed on the top of the elastic middle part, the top base covers the top outer ring of the support iron and is rigidly fixed thereto.

[0013] In a preferred solution, the elastic ring portion of the elastic middle portion is configured as a single corrugated structure or a multi-corrugated structure.

[0014] In a preferred embodiment, a connecting hole is provided on the bottom boss of the oil tank seat. After the adjusting pillar is screwed into the first threaded hole of the base, the top end is inserted into the connecting hole on the bottom boss of the elastic oil tank, so that the adjusting pillar, the base and the elastic oil tank are connected and fixed together; if the connecting hole is a pin hole or a threaded hole, the top end of the adjusting pillar is correspondingly configured as a pin shaft or a screw rod to match it.

[0015] In the preferred solution, a groove is provided on the upper part of the oil tank seat, the support iron is arranged in an inverted conical step shape, the small end is placed in the groove on the upper part of the oil tank seat, and the upper large end is fixed to the top base of the elastic oil tank by welding.

[0016] In the preferred embodiment, a spherical concave surface is provided at the center of the top of the support iron, a universal shaft support with a spherical convex surface is installed in the spherical concave surface, and a plurality of spring protection devices are provided around the center of the top of the support iron. One end of the spring protection device is fixed to the top of the support iron, and the other end is fixed to the bottom of the tray. The support iron and the tray are connected and fixed together by a spherical pair and a spring protection device that cooperate with each other.

[0017] In a preferred solution, the spring protection device is a tension spring, one end of which is fixed to the top of the support iron, and the other end of which is fixed to the bottom of the tray, so that the two are connected and fixed together.

[0018] In a preferred solution, the tension spring is sheathed with a corrugated hose to protect the tension spring from being attached by external impurities such as dust and oil leakage and thus affecting normal operation.

[0019] In a preferred solution, a plurality of ring irons are fixed to the outer periphery of the middle part of the support iron, and the ring irons are sleeved in the elastic ring part of the elastic middle part of the elastic oil tank to support the support iron to remain upright.

[0020] In the preferred scheme, the thrust bearing is a fan-shaped plate structure, and the material is tungsten-metal bearing or plastic bearing. The tungsten-metal bearing includes a steel bearing blank and a tungsten-metal layer. The bearing blank is forged steel, and the tungsten-metal layer is welded on the upper bearing surface; the plastic bearing includes a plastic layer, a steel wire layer and a bearing blank. The plastic layer and the steel wire layer are pressed together to form a bearing surface composite layer, and then the bearing surface composite layer and the steel bearing blank are welded into one by brazing.

[0021] The utility model provides a reversible pumped storage unit thrust bearing support structure with automatically tiltable bearing bushings, which has the following beneficial effects:

[0022] 1. The utility model solves the problems of the prior art in that the supporting structure is complex, the tilt is inflexible, and the height cannot be adjusted. The height adjustment is convenient and the tilt is flexible.

[0023] 2. The setting of the adjusting pillar of the utility model realizes the adjustment of the overall height of the supporting structure during the installation and operation and maintenance stages, thereby achieving the purpose of adjusting the height of the bearing;

[0024] 3. The setting of the regular hexagonal or regular quadrilateral structure of the external adjusting pillar of the utility model facilitates the torque wrench and other auxiliary tools to rotate and measure the torque, thereby achieving accurate measurement and control;

[0025] 4. The support iron and the universal shaft support of the utility model are set as a spherical secondary structure. Through this spherical contact form, the thrust washer has the ability to self-adapt in all directions, which effectively ensures the full contact between the upper surface of the thrust washer and the lower surface of the mirror plate, and also effectively reduces the local heating caused by the insufficient contact between the thrust washer and the mirror plate, and even the "burnt washer" accident;

[0026] 5. The top surface of the support iron of the utility model is connected to the upper plane seam of the elastic oil tank by welding. The joint welding is firm, reliable in strength, high in tightness, maintenance-free and low in cost.

[0027] 6. The utility model sets multiple sets of spring protection devices between the support iron and the tray, which effectively prevents the tray from being unable to automatically reset due to blocking;

[0028] 7. The utility model is provided with multiple groups of horizontal oil holes at the bottom of the support iron, which ensures the oil pressure balance of the turbine oil in the group;

[0029] 8. The utility model sets oil pipe connections between the supporting structures to ensure the oil pressure balance of the turbine oil between the groups;

[0030] 9. The supporting structure of the utility model can select different numbers of supporting structures according to the unit capacity, speed and generator structure, which can meet the use of pumped storage units with different capacities and speeds, and has good scalability;

[0031] 10. The elastic oil tank oil passages between the supporting structures of the utility model are interconnected to form a communicating vessel, and the communicating vessel principle and the incompressibility of turbine oil are used to make the bearings bear force evenly;

[0032] 11. The utility model provides a plurality of protrusions and slot structures in pairs between the tray and the thrust bearing bush, which is convenient for positioning and installation;

[0033] 12. The setting of the elastic middle part of the elastic oil tank of the utility model not only provides effective buffering during the adjustment and tilting of the thrust bearing, but also provides space for the storage of turbine oil, thereby further improving the compactness and reliability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The utility model is further described below in conjunction with the accompanying drawings and implementation examples:

[0035] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0036] Figure 2This is a schematic structural diagram of an elastic oil tank in Embodiment 2 of the present utility model;

[0037] Figure 3 This is a schematic diagram of the arrangement of eight groups of support structures in Example 3 of the utility model;

[0038] Figure 4 This is a schematic diagram of the arrangement of sixteen groups of support structures of Example 3 of the utility model;

[0039] Figure 5 This is a schematic diagram of the assembly of the elastic oil tank and the base of Example 4 of the utility model;

[0040] Figure 6 This is a schematic structural diagram of an elastic oil tank in Embodiment 5 of the present utility model;

[0041] Figure 7 This is a schematic diagram of the structure of the base of Example 5 of the utility model;

[0042] Figure 8 This is a schematic diagram of the structure of the spring protection device of Example 6 of the utility model;

[0043] Fig. 9 It is a schematic diagram of the assembly of the tray and the thrust bearing of the utility model;

[0044] Fig.10 This is a schematic diagram of the elastic oil tank connection of the thrust bearing support structure of the utility model;

[0045] In the figure: adjusting support 1, base 2, elastic oil tank 3, support iron 4, tray 5, thrust bearing 6, first threaded hole 7, connecting hole 8, horizontal oil hole 9, universal shaft support 10, spring protection device 11, ring iron 12, tension spring 111, corrugated hose 112, oil tank seat 301, elastic middle part 302, top base 303. DETAILED DESCRIPTION

[0046] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments:

[0047] Embodiment 1:

[0048] like Figure 1 As shown, a reversible pumped storage unit thrust bearing support structure with automatically tiltable bearing shells comprises a base 2, which is fixed on a lower foundation, with an adjusting pillar 1 installed in the middle, the adjusting pillar 1 is fixed on the base 2, and the upper part is connected and fixed with an elastic oil tank 3, a supporting iron 4 is installed in the middle of the elastic oil tank 3, a universal shaft pillar 10 is installed on the supporting iron 4, the supporting iron 4 and the universal shaft pillar 10 are matched through a spherical pair, a tray 5 is installed on the top of the universal shaft pillar 10, a spring protection device 11 is provided between the supporting iron 4 and the tray 5, the two are connected and fixed together, and a thrust bearing shell 6 is fixed above the tray 5.

[0049] In this embodiment, the base 2 is provided with grooves in the middle, a first threaded hole 7 is provided in the center of the groove, an external thread is provided on the adjustment pillar 1, the adjustment pillar 1 is embedded in the lower groove, and is connected and fixed to the base 2 through threads.

[0050] Furthermore, the outer ring of the other end of the adjusting pillar 1 is configured as a regular hexagon or a regular quadrilateral structure.

[0051] Furthermore, bolt holes are arranged around the outer circumference of the groove of the base 2, and the base 2 is fixed to the lower foundation by bolts, and the lower foundation is provided with installation and adjustment holes for adjusting the adjustment pillars 1.

[0052] Furthermore, they are installed in groups for use, and a plurality of horizontal oil holes 9 are evenly distributed on the lower part of the support iron 4, the horizontal oil holes 9 are connected to the elastic oil tank 3, the elastic oil tank 3 is filled with turbine oil, the horizontal oil holes 9 on the support iron 4 of the supporting structure in the group are interconnected, so as to keep the pressure balance in all directions in the elastic oil tank 3, and the elastic oil tanks 3 of the supporting structures between the groups are interconnected to form a communicating vessel, so as to keep the pressure balance in the elastic oil tanks 3 of each supporting structure.

[0053] Further, such as Fig. 9 As shown, a group of protrusion structures are arranged on the top of the tray 5, and a group of slots are arranged on the bottom of the thrust bearing 6. The protrusion structures on the top of the tray 5 and the slots on the bottom of the thrust bearing 6 are assembled together to install and fix the tray 5 and the thrust bearing 6 together.

[0054] Furthermore, the elastic oil tank 3 includes an oil tank seat 301, an elastic middle part 302 is fixed on the top of the oil tank seat 301, the elastic middle part 302 includes several layers of elastic ring parts, a boss is provided at the bottom of the oil tank seat 301, the boss is clamped in the upper groove of the base 2, and a top base 303 is fixed on the top of the elastic middle part 302, and the top base 303 covers the top outer ring of the support iron 4 and is rigidly fixed thereto.

[0055] Furthermore, the elastic ring portion of the elastic middle portion 302 is configured as a single corrugated structure.

[0056] Furthermore, a connecting hole 8 is provided on the bottom boss of the oil tank seat 301. After the adjusting pillar 1 is screwed into the first threaded hole 7 of the base 2, the top end is inserted into the connecting hole 8 on the bottom boss of the elastic oil tank 3, so that the adjusting pillar 1, the base 2 and the elastic oil tank 3 are connected and fixed together; if the connecting hole 8 is a pin hole or a threaded hole, the top end of the adjusting pillar 1 is correspondingly configured as a pin shaft or a screw to match it.

[0057] Furthermore, a groove is provided on the upper portion of the oil tank seat 301, and the support iron 4 is provided in an inverted conical stepped shape, with the small end placed in the groove on the upper portion of the oil tank seat 301, and the upper large end is fixed to the top base 303 of the elastic oil tank 3 by welding.

[0058] Furthermore, a spherical concave surface is provided at the center of the top of the support iron 4, and a universal shaft support 10 with a spherical convex surface is installed in the spherical concave surface. A plurality of spring protection devices 11 are provided around the center of the top of the support iron 4. One end of the spring protection device 11 is fixed to the top of the support iron 4, and the other end is fixed to the bottom of the tray 5. The support iron 4 and the tray 5 are connected and fixed together by the spherical pair and the spring protection device 11 that cooperate with each other.

[0059] Furthermore, a plurality of ring irons 12 are fixed to the outer periphery of the middle part of the support iron 4. The ring irons 12 are sleeved in the elastic ring part of the elastic middle part 302 of the elastic oil tank 3 to support the support iron 4 to remain upright.

[0060] Furthermore, the spring protection device 11 is a tension spring 111, one end of the tension spring 111 is fixed to the top of the support iron 4, and the other end is fixed to the bottom of the tray 5, and the two are connected and fixed together.

[0061] Furthermore, the thrust bearing 6 is a fan-shaped plate structure, and the material is tungsten-metal bearing or plastic bearing. The tungsten-metal bearing includes a steel bearing blank and a tungsten-metal layer. The bearing blank is forged steel, and a tungsten-metal (Babbitt alloy) layer is welded on the upper bearing surface; the plastic bearing includes a plastic layer, a steel wire layer and a bearing blank. The plastic layer and the steel wire layer are pressed together to form a bearing surface composite layer, and then the bearing surface composite layer and the steel bearing blank are welded into one by brazing.

[0062] When in use, different numbers of thrust bearing support structures are selected according to the capacity, speed and structure of the reversible pumped storage unit, generally eight, twelve, sixteen, twenty, twenty-four. After determining the number of thrust bearing support structures, assemble each support structure separately. Position and punch a circle of bolt holes on the base 2. First, screw the adjustment support 1 onto the base 2, install the elastic oil tank 3 onto the base 2, install the ring iron 12 onto the support iron 4, and then assemble the support iron 4, the universal shaft support 10, the spring protection device 11, the tray 5, the thrust bearing 6 and other components in sequence, and debug each support structure until it is qualified. Fig.10 As shown, each supporting structure is connected by an oil pipe to form a communicating vessel, and the oil tank is filled with turbine oil, forming a closed system with equal oil pressure.

[0063] After the rotor of the unit is hoisted, it is necessary to adjust the load between the thrust bearings to be uniform before the unit is put into use. When the thrust bearing 6 needs to be adjusted in height, the support structure is driven to move up and down by rotating the adjustment pillar 1 of each support structure, and the load is redistributed by the oil in the elastic oil tank 3 until the load between the thrust bearings 6 is adjusted to be uniform; when the reversible pumped storage unit needs to switch between the water pump mode or the turbine mode, and when switching between different working conditions, the spherical pair contact between the support iron 4 and the universal shaft support 10 will automatically adjust the inclination direction of the bearing, and the load will be redistributed by the oil in the elastic oil tank 3, so as to achieve automatic balancing and basically uniform force between the bearings, and finally meet the operation requirements of the reversible pumped storage unit.

[0064] Embodiment 2:

[0065] In another preferred embodiment, based on the above embodiment 1, Figure 2 As shown, when the stress state and load uniformity do not meet the requirements, the number of corrugations of the elastic oil tank 3 tank wall can be selected according to the stress state and load uniformity requirements, and the single-corrugated elastic oil tank 3 can be replaced with a multi-corrugated elastic oil tank 3 to meet the thrust bearing load size and uniformity requirements. The remaining structures and their connection relationships and usage methods are the same as in Example 1.

[0066] Embodiment 3:

[0067] In another preferred embodiment, based on the above embodiment 1, Figure 3 , 4 As shown, when the unit capacity is large or the speed is high, the number of supporting structure components can be selected according to the needs of the unit capacity and speed, and evenly distributed along the circumference. Generally, groups of multiples of 4 are set, such as eight, twelve, sixteen, twenty, etc.

[0068] Embodiment 4:

[0069] In another preferred embodiment, based on the above embodiment 1, Figure 5 As shown, one or more positioning steps are correspondingly provided on the elastic oil tank 3 and the base 2 to enhance the limitation of the displacement of the elastic oil tank 3. The remaining structures and their connection relationships and the method of use are the same as those in Example 1.

[0070] Embodiment 5:

[0071] In another preferred embodiment, based on the above embodiment 1, Figure 6 , 7 As shown, the elastic oil tank 3 is provided with a plurality of positioning pins, and a plurality of pin holes are correspondingly provided on the base 2 to enhance the limitation of the displacement of the elastic oil tank 3. The remaining structures and their connection relationships and the method of use are the same as those in Example 1. In this embodiment, there is no restriction on the shape, size and number of the positioning pins and holes, and they can meet the use requirements.

[0072] Embodiment 6:

[0073] In another preferred embodiment, based on the above embodiment 1, Figure 8 As shown, the spring protection device 11 includes a tension spring 111, and a corrugated hose 112 is sleeved on the tension spring 111. The inner diameter of the corrugated hose 112 needs to be slightly larger than the outer diameter of the tension spring 111. The setting of the corrugated hose 112 is mainly used for relative sealing of the tension spring 111 to avoid oil leakage, dust and other impurities adhering to the tension spring 111, so as to ensure the normal operation of the tension spring 111. The remaining structures and their connection relationships, and the method of use are the same as those in Example 1. In this embodiment, the structural form and material of the corrugated hose 112 are not limited, and they can meet the use requirements.

[0074] The above embodiments 2 to 6 can also be used in combination to provide targeted functional enhancements.

[0075] In the preferred solution, grooves are provided in the upper and lower parts of the middle of the base 2, a first threaded hole 7 is provided in the center of the groove, an external thread is provided on the adjusting pillar 1, the adjusting pillar 1 is embedded in the lower groove, and is connected and fixed to the base 2 by threads; the above arrangement facilitates precise fine-tuning of the thrust bearing, and is convenient for adjustment, disassembly and maintenance.

[0076] In a preferred solution, the outer ring of the other end of the adjusting support 1 is set to a regular hexagon or a regular quadrilateral structure; the above arrangement makes it easy for on-site workers to adjust the thrust bearing 6, which is convenient and quick.

[0077] In the preferred solution, bolt holes are arranged around the outer circumference of the groove of the base 2, and the base 2 is fixed to the lower foundation by bolts, and the lower foundation is provided with adjustment pillar 1 installation and adjustment holes; the above arrangement facilitates on-site workers to adjust the thrust bearing 6 without disassembling the supporting structure.

[0078] In the preferred scheme, they are installed and used in groups, and a plurality of horizontal oil holes 9 are evenly distributed on the lower part of the support iron 4, and the horizontal oil holes 9 are connected to the elastic oil tank 3. The elastic oil tank 3 is filled with turbine oil, and the horizontal oil holes 9 on the support iron 4 of the supporting structure in the group are interconnected to keep the pressure balance in all directions in the elastic oil tank 3. The elastic oil tanks 3 of each supporting structure between the groups are interconnected to form a communicating vessel to keep the pressure balance in the elastic oil tanks 3 of each supporting structure; the above arrangement makes the entire elastic oil tank 3 form a closed communicating vessel, so that the thrust bearing 6 is adjusted synchronously; they are installed and used in groups, and the elastic oil tanks 3 of each supporting structure between the groups are interconnected to form a communicating vessel to keep the pressure balance in the elastic oil tanks 3 of each supporting structure.

[0079] In the preferred solution, a group of protrusion structures are provided on the top of the tray 5, and a group of grooves are relatively provided on the bottom of the thrust bearing 6. The protrusion structure on the top of the tray 5 and the groove at the bottom of the thrust bearing 6 are assembled together to install and fix the tray 5 and the thrust bearing 6 together; the above arrangement enables the thrust bearing 6 and the tray 5 to be effectively positioned and conveniently installed.

[0080] In the preferred solution, the elastic oil tank 3 includes an oil tank seat 301, an elastic middle part 302 is fixed on the top of the oil tank seat 301, the elastic middle part 302 includes several layers of elastic ring parts, a boss is arranged at the bottom of the oil tank seat 301, the boss is clamped in the upper groove of the base 2, a top base 303 is fixed on the top of the elastic middle part 302, the top base 303 covers the top outer ring of the support iron 4 and is rigidly fixed thereto; the above arrangement enables the function of the elastic oil tank 3 to be realized, has elasticity, seals oil storage, facilitates the installation and positioning of the elastic oil tank 3, and at the same time ensures the stability and reliability of the elastic oil tank 3.

[0081] In a preferred solution, the elastic ring portion of the elastic middle portion 302 is configured as a single corrugated structure; the above configuration ensures the elasticity of the elastic oil tank 3 and is suitable for low-speed and small-capacity units with a smaller inclination.

[0082] In the preferred scheme, a connecting hole 8 is provided on the bottom boss of the oil tank seat 301. After the adjusting pillar 1 is screwed into the first threaded hole 7 of the base 2, the top end is inserted into the connecting hole 8 on the bottom boss of the elastic oil tank 3, so that the adjusting pillar 1, the base 2 and the elastic oil tank 3 are connected and fixed together; the connecting hole 8 is a pin hole or a threaded hole, and the top end of the adjusting pillar 1 is correspondingly configured as a pin shaft or a screw to match it; the above configuration enables the adjusting pillar 1 to realize height adjustment of the thrust bearing 6, while improving the reliability and stability of the height adjustment of the thrust bearing 6.

[0083] In the preferred solution, a groove is provided on the upper part of the oil tank seat 301, and the support iron 4 is arranged in an inverted conical stepped shape, with the small end placed in the groove on the upper part of the oil tank seat 301, and the upper large end is fixed to the top base 303 of the elastic oil tank 3 by welding; the above arrangement ensures the sealing of the elastic oil tank 3 and can balance the pressure inside the oil tank.

[0084] In the preferred scheme, the thrust bearing 6 is a fan-shaped plate structure, and the material is tungsten-metal bearing or plastic bearing. The tungsten-metal bearing includes a steel bearing blank and a tungsten-metal layer. The bearing blank is forged steel, and a tungsten-metal (Babbitt alloy) layer is welded on the upper bearing surface; the plastic bearing includes a plastic layer, a steel wire layer and a bearing blank. The plastic layer and the steel wire layer are pressed together to form a bearing surface composite layer, and then the bearing surface composite layer and the steel bearing blank are welded into one. The above settings ensure the wear resistance of the contact surface of the thrust bearing 6 and the reliability of the bearing.

[0085] In the preferred embodiment, a spherical concave surface is provided at the center of the top of the support iron 4, and a universal shaft support 10 with a spherical convex surface is installed in the spherical concave surface. A plurality of spring protection devices 11 are provided around the center of the top of the support iron 4. One end of the spring protection device 11 is fixed to the top of the support iron 4, and the other end is fixed to the bottom of the tray 5. The support iron 4 and the tray 5 are connected and fixed together by a spherical pair and a spring protection device 11 that cooperate with each other. The above arrangement ensures the free reset of the thrust bearing 6 after tilting.

[0086] In the preferred solution, a plurality of ring irons 12 are fixed to the outer periphery of the middle part of the support iron 4, and the ring irons 12 are mounted in the elastic ring part of the elastic middle part 302 of the elastic oil tank 3 to support the support iron 4 to remain upright; the above arrangement increases the rigidity of the elastic oil tank 3 while reducing the oil filling amount of the elastic oil tank 3, thereby saving costs.

[0087] In the preferred embodiment, the spring protection device 11 is a tension spring 111, one end of the tension spring 111 is fixed to the top of the support iron 4, and the other end is fixed to the bottom of the tray 5, connecting and fixing the two together; the above arrangement ensures the free resetting of the thrust bearing 6 and prevents the tray 5 from being stuck during the resetting process.

[0088] In a preferred solution, a corrugated hose 112 is sleeved on the tension spring 111; the above arrangement ensures that the tension spring 111 is not affected by the adhesion of impurities such as oil leakage and dust and thus operates normally, while also increasing the aesthetics.

[0089] In summary, the utility model provides a reversible pumped storage unit support structure, which ensures that the height of the thrust bearing 6 is adjustable by arranging an adjustment support 1 with an external thread between a base 2 with an internal thread and an elastic oil tank 3 with a connecting hole, and is convenient for assembly, disassembly and maintenance; by arranging a support bolt 10 between the support iron 4 and the tray 5, the effective connection between the support iron 4 and the tray 5 is ensured, and the assembly, disassembly and maintenance are convenient; by arranging a ring iron 12 filler in the middle of the elastic oil tank 3, the rigidity of the elastic oil tank 3 is effectively increased while the oil filling amount of the elastic oil tank 3 is reduced; by arranging a plurality of horizontal oil holes 9 at the bottom of the support iron 4, the balance of oil pressure in the elastic oil tank 3 of each supporting structure is ensured; by arranging oil pipe connections between the supporting structures, the elastic oil tanks 3 of each supporting structure are interconnected to form a closed system with equal oil pressure; by arranging pins and pin holes in pairs between the base 2 and the elastic oil tank 3, the determined position of the base 2 and the elastic oil tank 3 is ensured; By arranging the protrusion and groove structure in pairs between the tray 5 and the thrust bearing 6, the effective connection between the tray 5 and the thrust bearing 6 is ensured, while assembling, disassembling and repairing are convenient; a spherical substructure is arranged between the support iron 4 and the universal shaft support 10, and an elastic middle part 302 is arranged between the oil tank seat 301 of the elastic oil tank 3 and the top base 303, so that the supporting structure can be tilted flexibly to meet the working requirements of the reversible pumped storage unit; the arrangement of the spring protection device 11 between the support iron 4 and the tray 5 allows the supporting structure to be freely reset while preventing the tray 5 from being stuck and affecting the normal operation of the reversible pumped storage unit; the utility model solves the problems of the thrust bearing supporting structure of the prior art, such as complex form, inconvenient height adjustment, and inflexible inclination adjustment. It has a simple structure, convenient manual height adjustment, automatic and flexible inclination, good practicality, is suitable for pumped storage units with small loads, has low cost, high practical application value, and has been widely promoted in the field of pumped storage units.

Claims

1. A reversible pumped storage unit thrust bearing support structure with automatically tiltable bearing bushing, characterized in that: The base (2) comprises a base, which is fixed on a lower foundation, and an adjusting support (1) is installed in the middle. The adjusting support (1) is fixed on the base (2), and the upper part is connected and fixed with an elastic oil tank (3). A support iron (4) is installed in the middle of the elastic oil tank (3), and a universal shaft support (10) is installed on the support iron (4). The support iron (4) and the universal shaft support (10) are matched through a spherical pair. A tray (5) is installed on the top of the universal shaft support (10). A spring protection device (11) is provided between the support iron (4) and the tray (5) to connect and fix the two together. A thrust bearing (6) is fixed on the top of the tray (5).

2. A reversible pumped storage unit thrust bearing support structure with automatically tiltable bearing bushing according to claim 1, characterized in that: The base (2) is provided with grooves at the top and bottom, and a first threaded hole (7) is provided at the center of the groove. An external thread is provided at one end of the adjustment pillar (1). The adjustment pillar (1) is embedded in the lower groove and is connected and fixed to the base (2) via threads.

3. A reversible pumped storage unit thrust bearing support structure with automatically tiltable bearing bushing according to claim 2, characterized in that: The outer ring of the other end of the adjusting support (1) is arranged in a regular hexagonal or regular quadrilateral structure.

4. A reversible pumped storage unit thrust bearing support structure with automatically tiltable bearing bushing according to claim 2, characterized in that: Bolt holes are arranged around the outer periphery of the groove of the base (2), and the base (2) is fixed to the lower foundation by bolts, and the lower foundation is provided with mounting and adjustment holes for adjusting the adjustment pillars (1).

5. A reversible pumped storage unit thrust bearing support structure with automatically tiltable bearing bushing according to claim 1, characterized in that: The support irons (4) are installed in groups for use. A plurality of horizontal oil holes (9) are evenly distributed on the lower part of the support iron (4). The horizontal oil holes (9) are connected to the elastic oil tank (3). The elastic oil tank (3) is filled with turbine oil. The horizontal oil holes (9) on the support irons (4) of the supporting structure in the group are connected to each other to maintain pressure balance in all directions in the elastic oil tank (3).

6. A reversible pumped storage unit thrust bearing support structure with automatically tiltable bearing bushing according to claim 1, characterized in that: A group of protruding structures are arranged on the top of the tray (5), and a group of slots are arranged on the bottom of the thrust bearing (6) in a corresponding manner. The protruding structures on the top of the tray (5) and the slots on the bottom of the thrust bearing (6) are assembled together, so that the tray (5) and the thrust bearing (6) are installed and fixed together.

7. A reversible pumped storage unit thrust bearing support structure with automatically tiltable bearing bushing according to claim 1, characterized in that: The elastic oil tank (3) comprises an oil tank seat (301), an elastic middle part (302) is fixed on the top of the oil tank seat (301), the elastic middle part (302) comprises a plurality of layers of elastic ring parts, a boss is arranged at the bottom of the oil tank seat (301), the boss is clamped in the upper groove of the base (2), a top base (303) is fixed on the top of the elastic middle part (302), and the top base (303) covers the top outer ring of the support iron (4) and is rigidly fixed thereto.

8. A reversible pumped storage unit thrust bearing support structure with automatically tiltable bearing bushing according to claim 7, characterized in that: The elastic ring portion of the elastic middle portion (302) is configured as a single corrugated structure or a multi-corrugated structure.

9. A reversible pumped storage unit thrust bearing support structure with automatically tiltable bearing bushing according to claim 7, characterized in that: The bottom boss of the oil tank seat (301) is provided with a connecting hole (8). After the adjusting pillar (1) is screwed into the first threaded hole (7) of the base (2), the top end is inserted into the connecting hole (8) on the bottom boss of the elastic oil tank (3), thereby connecting and fixing the adjusting pillar (1), the base (2) and the elastic oil tank (3) together. If the connecting hole (8) is a pin hole or a threaded hole, the top end of the adjusting pillar (1) is correspondingly provided with a pin shaft or a screw rod to match it.

10. A reversible pumped storage unit thrust bearing support structure with automatically tiltable bearing bushing according to claim 9, characterized in that: The oil tank seat (301) is provided with a groove at the top, the support iron (4) is provided in an inverted conical stepped shape, the small end of which is placed in the groove at the top of the oil tank seat (301), and the upper large end is fixed to the top base (303) of the elastic oil tank (3) by welding.

11. A reversible pumped storage unit thrust bearing support structure with automatically tiltable bearing bushing according to claim 10, characterized in that: A spherical concave surface is provided at the center of the top of the support iron (4), and a universal shaft support (10) with a spherical convex surface is installed in the spherical concave surface. A plurality of spring protection devices (11) are provided around the center of the top of the support iron (4). One end of the spring protection device (11) is fixed to the top of the support iron (4), and the other end is fixed to the bottom of the tray (5). The support iron (4) and the tray (5) are connected and fixed together by a spherical pair and the spring protection device (11) that cooperate with each other.

12. A reversible pumped storage unit thrust bearing support structure with automatically tiltable bearing bushing according to claim 11, characterized in that: A plurality of ring irons (12) are fixed to the outer periphery of the middle part of the support iron (4), and the ring irons (12) are sleeved in the elastic ring part of the elastic middle part (302) of the elastic oil tank (3) to support the support iron (4) to remain upright.

13. A reversible pumped storage unit thrust bearing support structure with automatically tiltable bearing bushing according to claim 11, characterized in that: The spring protection device (11) is a tension spring (111), one end of the tension spring (111) is fixed to the top of the support iron (4), and the other end is fixed to the bottom of the tray (5), and the two are connected and fixed together.

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