Reversible pumped storage unit thrust bearing supporting structure based on elastic oil tank

Abstract

A reversible type pumped storage unit thrust bearing supporting structure based on an elastic oil tank is installed and used in groups and 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 the elastic oil tank, and supporting iron is installed in the middle of the elastic oil tank. A spherical pair is arranged between the elastic oil tank and the supporting iron for matching, a tray is fixedly installed above the supporting iron through a connecting piece, a thrust bearing bush is fixed above the tray, a plurality of horizontal oil through holes are evenly distributed in the lower portion of the supporting iron and communicated with the elastic oil tank, and the elastic oil tank is filled with turbine oil. The horizontal oil through holes in the supporting iron of the supporting structure in the group are communicated with one another, so that the pressure in each direction in the elastic oil tank is kept balanced; 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, design is ingenious, the structure is simple, and practicability is high.

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 based on an elastic oil tank. 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, CN213684372U discloses a thrust bearing support structure for a vertical turbine generator, in which an elastic oil tank is combined with a support iron and a sleeve and fixed above a base, a support screw is installed on the sleeve, a tray is placed on the top of the support screw, and a thrust bearing bush is placed above the tray. The utility model makes it easier to adjust the load uniformity between the thrust bearing bushes, and the position of the thrust bearing bush is adjusted by adjusting the position of the support screw. The support screw supported by the spherical surface can make the overall tilt of the thrust bearing bush more flexible, which is more conducive to forming a wedge-shaped oil film, thereby ensuring the safety of the thrust bearing operation; however, the bush can only be tilted, and the height cannot be adjusted.

[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 based on an elastic oil tank, which solves 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 based on an elastic oil tank, which is installed and used in groups, including a base, which is fixed on the lower foundation, with an adjusting pillar installed in the middle, the adjusting pillar is installed and fixed on the base, and the upper part is connected and fixed to the elastic oil tank, a support iron is installed in the middle of the elastic oil tank, a spherical pair is arranged between the elastic oil tank and the support iron, a tray is installed and fixed above the support iron through a connecting piece, and a thrust bearing 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 a preferred solution, a spherical concave surface is arranged in the groove on the upper part of the oil tank seat, a spherical convex surface is arranged on the lower part of the support iron, and the oil tank seat and the support iron are connected and fixed together through a spherical pair.

[0017] In a preferred solution, a second threaded hole is provided on the upper portion of the support iron, and a support bolt is installed in the second threaded hole as a connecting piece to connect and fix the support iron and the tray together.

[0018] 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.

[0019] The utility model provides a reversible pumped storage unit thrust bearing support structure based on an elastic oil tank, which has the following beneficial effects:

[0020] 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.

[0021] 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;

[0022] 3. The utility model sets the support iron bottom and the elastic oil tank spherical pair, and the rotation operation satisfies the bearing inclination required for the frequent forward and reverse rotation and switching working conditions of the reversible pumped storage unit, thereby achieving the effect of quickly establishing a wedge-shaped oil film;

[0023] 4. 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;

[0024] 5. The elastic oil tank and the support iron of the utility model are set as a spherical auxiliary 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 "burned washer" accident;

[0025] 6. 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.

[0026] 7. The utility model is provided with multiple groups of horizontal oil holes at the bottom of the support iron to ensure the oil pressure balance of the turbine oil in the group;

[0027] 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;

[0028] 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;

[0029] 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;

[0030] 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;

[0031] 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

[0032] The utility model is further described below in conjunction with the accompanying drawings and implementation examples:

[0033] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;

[0034] Figure 2 This is a schematic structural diagram of an elastic oil tank in Embodiment 2 of the present utility model;

[0035] Figure 3 This is a schematic diagram of the arrangement of eight groups of support structures in Example 3 of the utility model;

[0036] Figure 4 This is a schematic diagram of the arrangement of sixteen groups of support structures of Example 3 of the utility model;

[0037] Figure 5 This is a schematic diagram of the structure of Embodiment 4 of the present utility model;

[0038] Figure 6 This is a schematic diagram of the assembly of the elastic oil tank and the base of Example 5 of the utility model;

[0039] Figure 7 This is a schematic structural diagram of an elastic oil tank according to Embodiment 6 of the present utility model;

[0040] Figure 8 This is a schematic diagram of the structure of the base of Example 6 of the utility model;

[0041] Fig. 9 It is a schematic diagram of the assembly of the tray and the thrust bearing of the utility model;

[0042] Fig.10 This is a schematic diagram of the elastic oil tank connection of the thrust bearing support structure of the utility model;

[0043] In the figure: adjusting pillar 1, base 2, elastic oil tank 3, support iron 4, tray 5, thrust bearing 6, first threaded hole 7, connecting hole 8, second threaded hole 9, pillar bolt 10, horizontal oil hole 11, ring iron 12, oil tank seat 301, elastic middle part 302, top base 303. DETAILED DESCRIPTION

[0044] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0045] Embodiment 1:

[0046] like Figure 1 As shown, a reversible pumped storage unit thrust bearing support structure based on an elastic oil tank is installed and used in groups, including a base 2, the base 2 is fixed on the lower foundation, an adjusting pillar 1 is installed in the middle, the adjusting pillar 1 is installed and fixed on the base 2, and the upper part is connected and fixed to the elastic oil tank 3, a support iron 4 is installed in the middle of the elastic oil tank 3, a spherical pair is arranged between the elastic oil tank 3 and the support iron 4, a tray 5 is installed and fixed above the support iron 4 through a connecting piece, and a thrust bearing 6 is fixed above the tray 5.

[0047] 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.

[0048] Furthermore, the outer ring of the other end of the adjusting pillar 1 is configured as a regular hexagon or a regular quadrilateral structure.

[0049] 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.

[0050] Furthermore, they are installed in groups for use, and a plurality of horizontal oil holes 11 are evenly distributed on the lower part of the support iron 4, the horizontal oil holes 11 are connected to the elastic oil tank 3, the elastic oil tank 3 is filled with turbine oil, the horizontal oil holes 11 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.

[0051] 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.

[0052] 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.

[0053] Furthermore, the elastic ring portion of the elastic middle portion 302 is configured as a single corrugated structure.

[0054] 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.

[0055] 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.

[0056] Furthermore, a spherical concave surface is arranged in the groove on the upper part of the oil tank seat 301, and a spherical convex surface is arranged on the lower part of the support iron 4. The oil tank seat 301 and the support iron 4 are connected and fixed together through a spherical pair.

[0057] Furthermore, a second threaded hole 9 is provided on the upper portion of the support iron 4 , and a support bolt 10 is installed in the second threaded hole 9 as a connecting piece to connect and fix the support iron 4 and the tray 5 together.

[0058] 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.

[0059] 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 respectively; locate and punch a circle of fixing 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, then assemble the support iron 4, support bolt 10, tray 5, thrust bearing 6 and other components in sequence, and debug each support structure until it is qualified; if 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.

[0060] 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 pillars 1 of each supporting 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 oil tank seat 301 of the elastic oil tank 3 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.

[0061] Embodiment 2:

[0062] 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.

[0063] Embodiment 3:

[0064] 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 four are set, such as eight, twelve, sixteen, twenty, etc.

[0065] Embodiment 4:

[0066] In another preferred embodiment, based on the above embodiment 1, Figure 5 As shown, a plurality of ring iron 12 filling pieces can be arranged inside the elastic oil tank 3 to reduce the oil filling amount of the elastic oil tank 3. The remaining structures and their connection relationships and usage methods are the same as those in Example 1.

[0067] Embodiment 5:

[0068] In another preferred embodiment, based on the above embodiment 1, Figure 6 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.

[0069] Embodiment 6:

[0070] In another preferred embodiment, based on the above embodiment 1, Figure 7 , 8 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.

[0071] The above embodiments 2 to 6 can also be used in combination to provide targeted functional enhancements.

[0072] 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.

[0073] 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.

[0074] 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.

[0075] In the preferred scheme, they are installed and used in groups, and a plurality of horizontal oil holes 11 are evenly distributed on the lower part of the support iron 4, and the horizontal oil holes 11 are connected to the elastic oil tank 3. The elastic oil tank 3 is filled with turbine oil, and the horizontal oil holes 11 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 of each supporting structure.

[0076] 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.

[0077] 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.

[0078] 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.

[0079] 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.

[0080] 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.

[0081] In the preferred solution, a spherical concave surface is provided in the upper groove of the oil tank seat 301, a spherical convex surface is provided at the lower part of the support iron 4, and the oil tank seat 301 and the support iron 4 are connected and fixed together by a spherical pair; the above arrangement realizes the inclination of the thrust bearing 6 and provides a guarantee for the flexible inclination of the thrust bearing 6.

[0082] In the preferred solution, a second threaded hole 9 is provided on the upper part of the support iron 4, and a support bolt 10 is installed in the second threaded hole 9 as a connecting piece to connect and fix the support iron 4 and the tray 5 together; the above arrangement saves raw materials and increases the interchangeability of the support bolt 10, which is convenient for maintenance.

[0083] 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.

[0084] 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 facilitates 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 11 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 an oil pipe connection between the elastic oil tanks 3 of each supporting structure, it is ensured that the supporting structures are interconnected to form a closed system with equal oil pressure; Pin shafts and pin holes are arranged in pairs between the elastic oil tank 3 to ensure the fixed position of the base 2 and the elastic oil tank 3; by arranging protrusions and groove structures 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 elastic oil tank 3 and the support iron 4, 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 utility model solves the problems of the thrust bearing supporting structure in the prior art, such as complex form, inconvenient height adjustment and inflexible inclination adjustment, and has a simple structure, convenient manual height adjustment and automatic flexible inclination, good practicality, strong bearing capacity, wide application range and 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 based on an elastic oil tank, installed and used in groups, 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 to an elastic oil tank (3). A support iron (4) is installed in the middle of the elastic oil tank (3). A spherical pair is provided between the elastic oil tank (3) and the support iron (4). A tray (5) is installed and fixed above the support iron (4) through a connecting piece, and a thrust bearing (6) is fixed above the tray (5).

2. According to claim 1, a reversible pumped storage unit thrust bearing support structure based on an elastic oil tank is 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. According to claim 2, a reversible pumped storage unit thrust bearing support structure based on an elastic oil tank is 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. According to claim 2, a reversible pumped storage unit thrust bearing support structure based on an elastic oil tank is 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. The reversible pumped storage unit thrust bearing support structure based on an elastic oil tank according to claim 1, characterized in that: A plurality of horizontal oil holes (11) are evenly distributed on the lower part of the support iron (4), the horizontal oil holes (11) are connected to the elastic oil tank (3), the elastic oil tank (3) is filled with turbine oil, and the horizontal oil holes (11) on the support iron (4) of the supporting structure in the group are connected to each other, so as to maintain the pressure balance in all directions in the elastic oil tank.

6. The reversible pumped storage unit thrust bearing support structure based on an elastic oil tank 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. The reversible pumped storage unit thrust bearing support structure based on an elastic oil tank 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. The reversible pumped storage unit thrust bearing support structure based on an elastic oil tank according to claim 7 is 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. The reversible pumped storage unit thrust bearing support structure based on an elastic oil tank 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. The reversible pumped storage unit thrust bearing support structure based on an elastic oil tank 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. The reversible pumped storage unit thrust bearing support structure based on an elastic oil tank according to claim 10, characterized in that: A spherical concave surface is arranged in the groove at the upper part of the oil tank seat (301), and a spherical convex surface is arranged at the lower part of the support iron (4). The oil tank seat (301) and the support iron (4) are connected and fixed together via a spherical pair.

12. A reversible pumped storage unit thrust bearing support structure based on an elastic oil tank according to claim 11, characterized in that: A second threaded hole (9) is provided on the upper portion of the support iron (4), and a support bolt (10) is installed in the second threaded hole (9) as a connecting member to connect and fix the support iron (4) and the tray (5) together.

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