CN219275732U - Nuclear main pump thrust bearing assembly and disassembly tools - Google Patents
Nuclear main pump thrust bearing assembly and disassembly tools Download PDFInfo
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- CN219275732U CN219275732U CN202223444356.3U CN202223444356U CN219275732U CN 219275732 U CN219275732 U CN 219275732U CN 202223444356 U CN202223444356 U CN 202223444356U CN 219275732 U CN219275732 U CN 219275732U
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- thrust bearing
- leveling
- main pump
- bearing
- support
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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Abstract
The utility model provides a nuclear main pump thrust bearing dismounting tool, which comprises: the top of the bottom plate is provided with a leveling component; the leveling assembly comprises a leveling platform which is fixedly arranged on the upper surface of the bottom plate; the leveling pieces are uniformly arranged along the circumferential direction of the leveling platform and penetrate through the leveling platform, and are used for adjusting the levelness of the leveling platform; a swivel bearing disposed above the leveling platform; a plurality of different sized supports, each of said supports being disposed on a respective one of the slew bearings for providing a supporting force for a matched sized thrust bearing component; and thrust is applied to the support piece, and the thrust bearing component and the slewing bearing are respectively driven to rotate by friction force, so that the thrust bearing component realizes position centering. The device has the advantages of convenient structure assembly, wide applicability and light weight.
Description
Technical Field
The utility model belongs to the field of nuclear main pump installation, and particularly relates to a nuclear main pump thrust bearing dismounting tool.
Background
The wet winding motor reactor coolant pump is a third generation shaft-seal-free nuclear main pump, and the thrust bearing is positioned at the lowest end of the pressure-bearing boundary inner core package. The design of the nuclear main pump of the wet winding motor can realize the disassembly and assembly of the thrust bearing on the premise of not disassembling the core package. The thrust bearing mounting includes 3 parts: the thrust bearing bracket, the thrust bearing disk and the thrust bearing chamber are all different in size and height. Because the thrust bearing belongs to a key functional component of the nuclear main pump, the installation accuracy requirement is high, and the centering surface of the Hertz tooth needs to be carefully protected in the installation process; the thrust bearing chamber and the thrust bearing bracket belong to pressure-bearing boundaries, and the sealing surfaces are required to be protected in the disassembly and assembly process, so that the leakage of the pressure-bearing boundaries is avoided. It is therefore desirable to design and manufacture a tool for accomplishing the removal of the thrust bearing from the lower end.
Disclosure of Invention
The utility model aims to provide a nuclear main pump thrust bearing dismounting tool which has the advantages of convenience in structure assembly, wide applicability and light weight.
In order to achieve the above object, the present utility model provides a nuclear main pump thrust bearing dismounting tool, wherein the thrust bearing comprises a plurality of thrust bearing components, respectively: a thrust bearing chamber, a thrust bearing bracket and a thrust bearing disk; the dismounting tool comprises: the top of the bottom plate is provided with a leveling component; the leveling assembly comprises a leveling platform which is fixedly arranged on the upper surface of the bottom plate; the leveling pieces are uniformly arranged along the circumferential direction of the leveling platform and penetrate through the leveling platform, and are used for adjusting the levelness of the leveling platform; a swivel bearing disposed above the leveling platform; a plurality of different sized supports, each of said supports being disposed on a respective one of the slew bearings for providing a supporting force for a matched sized thrust bearing component; and thrust is applied to the supporting piece to drive the thrust bearing component and the slewing bearing to rotate respectively, so that the thrust bearing component realizes position centering.
Preferably, a first spigot is formed on the upper surface of the leveling platform, and a first slewing bearing is arranged in the first spigot; adopting a first support ring as the support; the first support ring is arranged on the first slewing bearing and used for supporting the thrust bearing chamber, and the first support ring drives the thrust bearing chamber to rotate under the action of the first slewing bearing to complete disassembly and assembly.
Preferably, the bottom surface of the first support ring is provided with a second spigot matched with the first slewing bearing; the first slewing bearing comprises an upper seat ring and a lower seat ring, and balls are arranged between the upper seat ring and the lower seat ring, so that the upper seat ring and the lower seat ring can rotate relatively; the lower race nest of the first slewing bearing is arranged in the first spigot, the upper race nest is arranged in the second spigot, the lower race and the first spigot are kept relatively static, and the upper race and the second spigot are kept relatively static.
Preferably, a first supporting frame is adopted as the supporting piece; the first support frame is arranged on the first support ring and used for supporting the thrust bearing bracket, and the first support frame drives the thrust bearing bracket to rotate to complete disassembly and assembly under the action of the first slewing bearing.
Preferably, the first supporting frame includes: the chassis is provided with a third spigot matched with the diameter of the first support ring at the center, and the first support frame is connected with the first support ring through the third spigot; the connecting rods are uniformly arranged at intervals along the circumferential direction of the chassis; and the top disc is arranged at the top end of the connecting rod, and the upper surface of the top disc is contacted with the lower surface of the thrust bearing bracket.
Preferably, a second support frame and a second support ring are used as the support member; the second support frame is arranged on the upper surface of the leveling platform, the second support frame is connected with the second support ring through a second slewing bearing, the second support ring is used for supporting the thrust bearing disc, and the second support ring drives the thrust bearing disc to rotate under the action of the second slewing bearing to complete disassembly and assembly.
Preferably, a fifth spigot is arranged on the bottom surface of the second support ring and is used for fixing the second slewing bearing; the second slewing bearing has the same structure as the first slewing bearing.
Preferably, the second supporting frame includes: the first annular disc and the second annular disc are arranged in parallel; the coiled plate is arranged between the first annular disc and the second annular disc, and the bottom and the top of the coiled plate are respectively connected with the first annular disc and the second annular disc; and the first annular disc is provided with a connecting hole, and a second connecting piece penetrates through the connecting hole to fix the second support frame on the leveling platform.
Preferably, a plurality of reinforcing ribs are vertically arranged at the joint of the first annular disc and the coiled plate along the circumferential direction of the first annular disc so as to enhance the supporting strength of the second supporting frame; the upper surface of the second ring disc is provided with a fourth spigot for fixing the second slewing bearing; a plurality of second windows are formed in the circumferential side wall of the coiled plate, and bolt dismounting positions are provided for mounting and dismounting processes.
Preferably, a plurality of leveling screws which are uniformly arranged along the circumferential direction of the leveling platform are adopted as the leveling pieces; and (3) penetrating the leveling screws into the leveling platform and screwing the leveling screws into the bottom plate, and adjusting the levelness of the leveling platform by adjusting the screwing depth of each leveling screw in the bottom plate.
In summary, compared with the prior art, the disassembly and assembly tool for the nuclear main pump thrust bearing provided by the utility model has the following beneficial effects: (1) The utility model is detachable and assembled, the same bottom plate is used, and the disassembly and assembly of the thrust bearing brackets, the thrust bearing discs and the thrust bearing chambers with different heights and different requirements can be realized by arranging different supporting pieces; (2) The first support frame and the second support frame are respectively provided with the first window and the second window, so that the bolts are convenient to assemble and disassemble, and the weight of the device is reduced; (3) The leveling assembly is arranged, so that the dismounting tool can be vertically adjusted to ensure that the levelness of the support piece meets the dismounting requirement; (4) According to the utility model, the rotary bearing is arranged, so that the Hertz tooth and the bolt hole can be easily and manually rotated in the disassembly and assembly process.
Drawings
FIG. 1 is a schematic diagram of a nuclear main pump thrust bearing assembly and disassembly tool of the present utility model;
FIG. 2 is a schematic view of the thrust bearing chamber assembly and disassembly tool of the nuclear main pump thrust bearing assembly and disassembly tool of the present utility model;
FIG. 3 is a schematic view of the thrust bearing bracket assembly and disassembly tool of the nuclear main pump thrust bearing assembly and disassembly tool of the present utility model;
FIG. 4 is a schematic diagram of a thrust bearing disk assembly and disassembly tool of the nuclear main pump thrust bearing assembly and disassembly tool of the present utility model;
FIG. 5 is a schematic view of the first support frame of the nuclear main pump thrust bearing assembly and disassembly tool according to the present utility model;
FIG. 6 is a schematic view of a second support frame in the nuclear main pump thrust bearing assembly and disassembly tool of the present utility model;
FIG. 7 is a schematic illustration of the installation of a thrust bearing bracket using the nuclear main pump thrust bearing assembly and disassembly tool of the present utility model;
FIG. 8 is a schematic illustration of the installation of a thrust bearing disk using the nuclear main pump thrust bearing assembly and disassembly tool of the present utility model;
FIG. 9 is a schematic view of the installation of a thrust bearing chamber using the nuclear main pump thrust bearing assembly and disassembly tool of the present utility model.
Detailed Description
The technical scheme, constructional features, achieved objects and effects of the embodiments of the present utility model will be described in detail below with reference to fig. 1 to 9 in the embodiments of the present utility model.
It should be noted that, the drawings are in very simplified form and all use non-precise proportions, which are only used for the purpose of conveniently and clearly assisting in describing the embodiments of the present utility model, and are not intended to limit the implementation conditions of the present utility model, so that the present utility model has no technical significance, and any modification of structure, change of proportion or adjustment of size, without affecting the efficacy and achievement of the present utility model, should still fall within the scope covered by the technical content disclosed by the present utility model.
It is noted that in the present utility model, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
The utility model provides a nuclear main pump thrust bearing dismounting tool which is used for dismounting or mounting various parts of a thrust bearing. The thrust bearing includes 3 thrust bearing parts, is thrust bearing bracket, thrust bearing dish and thrust bearing room respectively, the size and the height of 3 parts are all different, as shown in fig. 1, and this nuclear main pump thrust bearing assembly and disassembly tools includes: a bottom plate 1, the top of which is provided with a leveling component; the leveling assembly comprises a leveling platform 21 which is fixedly arranged on the upper surface of the bottom plate 1; the leveling pieces 22 are uniformly arranged along the circumferential direction of the leveling platform 21 and penetrate through the leveling platform 21, and are used for adjusting the levelness of the leveling platform 21; a slewing bearing disposed above the leveling platform 21; a plurality of different sized supports, each of said supports being disposed on a respective one of the slew bearings for providing a supporting force for a matched sized thrust bearing component; and thrust is applied to the support piece, and the thrust bearing component and the slewing bearing are respectively driven to rotate by friction force, so that the thrust bearing component realizes position centering.
In this embodiment, as shown in fig. 1, 3 leveling screws uniformly arranged along the circumferential direction of the leveling platform 21 are used as the leveling pieces 22; after penetrating the leveling platform 21, leveling screws are screwed into the bottom plate 1, and the levelness of the leveling platform 21 is adjusted by adjusting the screwing depth of 3 leveling screws in the bottom plate 1. After the leveling platform 21 is adjusted in levelness, the leveling platform 21 and the base plate 1 are fixedly connected by the first connecting member 23 (in this embodiment, bolts are used as the first connecting members 23).
As shown in fig. 2 and 9, fig. 2 is a schematic view of a dismounting tool for mounting a thrust bearing chamber 400 according to the present utility model, in which a first support ring 4 is used as the support member; the upper surface of the leveling platform 21 is provided with a first spigot, and a first slewing bearing 31 is arranged in the first spigot; the first support ring 4 is arranged on the first slewing bearing 31 for supporting a thrust bearing chamber 400; the bottom surface of the first support ring 4 is provided with a second spigot matched with the first slewing bearing 31; the first rotary bearing 31 comprises an upper race and a lower race, and balls are arranged between the upper race and the lower race to enable the upper race and the lower race to rotate relatively; the lower race nest of the first slewing bearing 31 is disposed in the first spigot, the upper race nest is disposed in the second spigot, and the lower race and the first spigot remain relatively stationary, and the upper race and the second spigot remain relatively stationary. Wherein the upper surface of the first support ring 4 is used as a contact surface with the thrust bearing chamber 400, and the diameter of the upper surface is matched with the size of the contact surface at the bottom of the thrust bearing chamber 400.
Specifically, as shown in fig. 9, when the dismounting tool for mounting the thrust bearing chamber 400 provided in this embodiment is used to mount the thrust bearing chamber, firstly, the leveling platform 21 is adjusted to be parallel to the mounting plane by the adjusting member 22, then the thrust bearing chamber 400 and the dismounting tool are mounted on the main pump lifting device, at this time, the thrust bearing chamber 400 is placed on the first support ring 4, the thrust bearing chamber 400 and the dismounting tool are lifted by the main pump lifting device, the top of the thrust bearing chamber 400 is aligned with the mounting plane, the first support ring 4 is gently rotated, and under the condition that the bottom plate 1 is kept stationary due to static friction between the thrust bearing chamber 400 and the first support ring 4 and rolling of the balls in the first slewing bearing 31, that is, under the condition that the lower race of the first slewing bearing 31 is kept stationary, the rotation of the first support ring 4 can drive the upper race of the first slewing bearing 31 to rotate, and simultaneously drive the thrust bearing chamber 400 to rotate, so as to realize precise centering of the thrust bearing chamber 400 and the thrust bracket 200 in the circumferential direction. Then, thrust bearing bolts and nut washers are installed to fixedly connect the thrust bearing chamber 400 with the thrust bearing bracket 200. Lowering the main pump lifting device and withdrawing the disassembly and assembly tool, the installation of the thrust bearing chamber 400 is completed.
Similarly, when the dismounting tool for mounting the thrust bearing chamber is used for dismounting the thrust bearing chamber 400, firstly, the dismounting tool is mounted on the main pump lifting device, the main pump lifting device is lifted, the upper surface of the first support ring 4 in the dismounting tool is contacted with the lower surface of the thrust bearing chamber 400, the thrust bearing bolt and the nut gasket are removed from the thrust bearing chamber 400, the first support ring 4 is gently rotated, the thrust bearing chamber 400 is rotated and then misplaced with the thrust bearing bracket 200, the main pump lifting device is further lowered, the dismounting tool is driven to descend, and the thrust bearing chamber 400 supported by the first support ring 4 is separated from the thrust bearing bracket 200, so that the dismounting of the thrust bearing chamber 400 is completed.
Further, as shown in fig. 3 and 7, fig. 3 is a schematic view of an assembling and disassembling tool for assembling a thrust bearing bracket 200 according to the present utility model, in this embodiment, a first supporting frame 5 is used as the supporting member; the first support frame 5 is arranged on the first support ring 4. Specifically, as shown in fig. 5, the first supporting frame 5 includes: the chassis 51 is provided with a third spigot 54 at the center thereof, which is matched with the diameter of the first support ring 4, and the first support frame 5 is connected with the first support ring 4 through the third spigot 54, namely, the top of the first support ring 4 is embedded in the third spigot of the first support frame 5, and the first support ring 4 and the third spigot are kept relatively static, so that the first support frame 5 rotates to drive the first support ring 4 to rotate, and then drives the first slewing bearing 31 to rotate, and simultaneously, the first support frame 5 is effectively prevented from tilting; a plurality of connection rods 52 provided at regular intervals along the circumferential direction of the chassis 51 (6 connection rods 52 are provided in the present embodiment); a top plate 53 provided at the top end of the connecting rod 52 for supporting the thrust bearing bracket 200. Wherein the diameter of the top disk 53 matches the diameter of the thrust bearing bracket 200.
Specifically, as shown in fig. 7, when the dismounting tool for mounting the thrust bearing bracket 200 provided in this embodiment is used to mount the thrust bearing bracket 200, only the thrust bearing bracket 200 needs to be placed on the first support frame 5, the remaining steps are substantially the same as those of mounting the thrust bearing chamber 400, after the main pump lifting device lifts the top of the thrust bearing bracket 200 to be aligned with the mounting plane, by rotating the first support frame 5, under the condition that the base plate 1 remains stationary, that is, under the condition that the lower race of the first slewing bearing 31 remains stationary, due to static friction between the first support frame 5 and the thrust bearing bracket 200 and rolling of balls in the first slewing bearing 31, the rotation of the first support frame 5 can drive the thrust bearing bracket 200 and the first supporting ring 4 to rotate, and then drive the first slewing bearing 31 connected with the first supporting ring 4 to rotate, so as to realize the centering of the thrust bearing bracket 200 and the motor casing 100 in the circumferential direction. The thrust bearing bracket 200 is then fixedly coupled to the motor case 100 by tightening the coupling bolts of the thrust bearing bracket 200 to the motor case 100 through the first windows formed between the adjacent coupling rods 52.
Similarly, when the dismounting tool for mounting the thrust bearing bracket 200 provided in this embodiment is used for dismounting the thrust bearing bracket 200, firstly, the dismounting tool is mounted on the main pump lifting device, the main pump lifting device is lifted, the upper surface of the first support frame 5 in the dismounting tool is contacted with the lower surface of the thrust bearing bracket 200, the connecting bolt is removed from the thrust bearing bracket 200, the first support frame 5 is gently rotated, the thrust bearing bracket 200 is misplaced with the motor casing 100 after being rotated, the height of the main pump lifting device is further reduced, the dismounting tool is driven to descend, the thrust bearing bracket 200 borne by the first support frame 5 is separated from the motor casing 100, and the dismounting of the thrust bearing bracket 200 is completed.
Further, as shown in fig. 4 and 8, fig. 4 is a schematic view of an assembling and disassembling tool for assembling a thrust bearing disc 300 according to the present utility model, in which a second support 6 and a second support ring 7 are used as the support members; the second supporting frame 6 is arranged on the upper surface of the leveling platform 21; a second slewing bearing 32 is arranged at the top of the second supporting frame 6; the second support ring 7 is provided on top of the second slewing bearing 32 for supporting the thrust bearing plate 300.
Specifically, as shown in fig. 6, the second supporting frame 6 includes: a first annular disk 61 and a second annular disk 63 disposed in parallel; and a rolled sheet 62 disposed between the first and second annular disks 61 and 63, and having bottom and top portions connected to the first and second annular disks 61 and 63, respectively. The first ring plate 61 is provided with a connecting hole, and the second supporting frame 6 is fixed on the leveling platform 21 by adopting a second connecting piece 65 to pass through the connecting hole. In order to improve the stability of the second support frame 6, a plurality of reinforcing ribs 64 are vertically disposed along the circumferential direction of the first annular disc 61 at the connection of the first annular disc 61 and the rolled plate 62 to enhance the support strength of the second support frame 6. The upper surface of the second ring disc 63 is provided with a fourth spigot for fixing the second slewing bearing 32. The bottom surface of the second support ring 7 is provided with a fifth spigot for fixing the second slewing bearing 32. The second rotary bearing 32 has the same structure and working principle as the first rotary bearing 31, i.e. the second rotary bearing 32 also comprises an upper race and a lower race with balls arranged between them. And as such the second slew bearing 32 is connected to and held relatively stationary with the second support ring 7 by an upper race and is connected to and held relatively stationary with the second ring disk 63 by a lower race.
Further, a plurality of second windows are provided on the circumferential side wall of the rolled plate 62 to provide a bolt dismounting position in the mounting and dismounting process. The upper surface of the second support ring 7 serves as a contact surface with the thrust bearing disc 300, and its diameter matches the size of the contact surface at the bottom of the thrust bearing disc 300.
Also, as shown in fig. 8, when the dismounting tool for mounting the thrust bearing plate 300 provided in this embodiment is used to mount the thrust bearing plate 300, first, the leveling platform 21 is adjusted to be parallel to the mounting plane by the adjusting member 22, and then the thrust bearing plate 300 and the dismounting tool are mounted to the main pump lifting device, at this time, the thrust bearing plate 300 is placed on the second support ring 7, the thrust bearing plate 300 and the dismounting tool are lifted by the main pump lifting device and the top of the thrust bearing plate 300 is aligned with the mounting plane, the second support ring 7 is gently rotated, and the rotation of the second support frame 6 and the lower race of the second rotary bearing 32 can drive the upper race of the second rotary bearing 32 to rotate while driving the thrust bearing plate 300 to rotate due to the static friction between the thrust bearing plate 300 and the second support ring 7 and the rolling of balls in the second rotary bearing 32, so that the thrust bearing plate 300 is precisely aligned with the hercynth teeth of the motor shaft. And then the connecting stud and super nut of the thrust bearing disc 300 and the motor shaft are screwed through a second window on the second support frame 6, and the thrust bearing disc 300 is fixedly connected with the motor shaft. Lowering the main pump lifting device and withdrawing the assembly and disassembly tools, the installation of thrust bearing plate 300 is completed.
Further, when the dismounting tool for mounting the thrust bearing plate 300 provided in this embodiment is used for dismounting the thrust bearing plate 300, firstly, the dismounting tool is mounted on the main pump lifting device, the main pump lifting device is lifted, the upper surface of the second support ring 7 in the dismounting tool is contacted with the lower surface of the thrust bearing plate 300, the connecting stud and the super nut are removed from the thrust bearing plate 300, the second support ring 7 is gently rotated, the thrust bearing plate 300 is rotated and then misplaced with the motor shaft, the main pump lifting device is further lowered, the dismounting tool is driven to descend, and the thrust bearing plate 300 supported by the second support ring 7 is separated from the motor shaft, so that the dismounting of the thrust bearing plate 300 is completed.
In summary, compared with the prior art, the nuclear main pump thrust bearing dismounting tool provided by the utility model has the advantages of convenience in structure assembly, wide applicability, light weight and the like.
While the present utility model has been described in detail through the foregoing description of the preferred embodiment, it should be understood that the foregoing description is not to be considered as limiting the utility model. Many modifications and substitutions of the present utility model will become apparent to those of ordinary skill in the art upon reading the foregoing. Accordingly, the scope of the utility model should be limited only by the attached claims.
Claims (10)
1. The utility model provides a nuclear main pump thrust bearing assembly and disassembly tools, wherein, thrust bearing contains a plurality of thrust bearing parts, does respectively: thrust bearing chamber (400), thrust bearing bracket (200) and thrust bearing disk (300), characterized in that the assembly and disassembly tool comprises:
a bottom plate (1) with a leveling component arranged at the top;
the leveling assembly comprises a leveling platform (21) which is fixedly arranged on the upper surface of the bottom plate (1); the leveling pieces (22) are uniformly arranged along the circumferential direction of the leveling platform (21) and penetrate through the leveling platform (21) to adjust the levelness of the leveling platform (21);
a swivel bearing disposed above the leveling platform (21);
a plurality of different sized supports, each of said supports being disposed on a respective one of the slew bearings for providing a supporting force for a matched sized thrust bearing component; and thrust is applied to the supporting piece to drive the thrust bearing component and the slewing bearing to rotate respectively, so that the thrust bearing component realizes position centering.
2. The nuclear main pump thrust bearing dismounting tool as claimed in claim 1, wherein a first spigot is formed on the upper surface of the leveling platform (21), and a first slewing bearing (31) is installed in the first spigot; -using a first support ring (4) as the support; the first support ring (4) is arranged on the first slewing bearing (31) and used for supporting the thrust bearing chamber (400), and the first support ring (4) drives the thrust bearing chamber (400) to rotate under the action of the first slewing bearing (31) to complete disassembly and assembly.
3. The nuclear main pump thrust bearing assembly and disassembly tool according to claim 2, wherein the bottom surface of the first support ring (4) is provided with a second spigot matched with the first slewing bearing (31); the first slewing bearing (31) comprises an upper seat ring and a lower seat ring, and balls are arranged between the upper seat ring and the lower seat ring, so that the upper seat ring and the lower seat ring can rotate relatively; the lower race nest of first slewing bearing (31) sets up in first tang, and the upper race nest sets up in the second tang, and lower race and first tang keep relatively static, and upper race and second tang keep relatively static.
4. A nuclear main pump thrust bearing assembly and disassembly tool as claimed in claim 3, characterized in that a first support frame (5) is used as the support; the first support frame (5) is arranged on the first support ring (4) and is used for supporting the thrust bearing bracket (200), and the first support frame (5) drives the thrust bearing bracket (200) to rotate under the action of the first slewing bearing (31) to complete disassembly and assembly.
5. The nuclear main pump thrust bearing assembly and disassembly tool of claim 4, wherein the first support frame (5) comprises:
the chassis (51) is provided with a third spigot (54) which is matched with the diameter of the first support ring (4) at the center, and the first support frame (5) is connected with the first support ring (4) through the third spigot (54);
a plurality of connecting rods (52) which are uniformly spaced apart in the circumferential direction of the chassis (51);
and a top plate (53) provided at the top end of the connecting rod (52), the upper surface of which is in contact with the lower surface of the thrust bearing bracket (200).
6. The nuclear main pump thrust bearing assembly and disassembly tool according to claim 2, wherein a second support bracket (6) and a second support ring (7) are adopted as the support; the second support frame (6) is arranged on the upper surface of the leveling platform (21), the second support frame (6) is connected with the second support ring (7) through a second slewing bearing (32), the second support ring (7) is used for supporting the thrust bearing disc (300), and the second support ring (7) drives the thrust bearing disc (300) to rotate under the action of the second slewing bearing (32) to complete disassembly and assembly.
7. The nuclear main pump thrust bearing dismounting tool as claimed in claim 6, wherein a fifth spigot is arranged on the bottom surface of the second support ring (7) for fixing the second slewing bearing (32); the second slewing bearing (32) has the same structure as the first slewing bearing (31).
8. The nuclear main pump thrust bearing assembly and disassembly tool of claim 7, wherein the second support bracket (6) comprises:
a first annular disk (61) and a second annular disk (63) arranged in parallel;
a rolling plate (62) which is arranged between the first annular disk (61) and the second annular disk (63), and the bottom and the top are respectively connected with the first annular disk (61) and the second annular disk (63);
the first annular disc (61) is provided with a connecting hole, and a second connecting piece (65) penetrates through the connecting hole to fix the second support frame (6) on the leveling platform (21).
9. The assembling and disassembling tool for the thrust bearing of the nuclear main pump according to claim 8, wherein a plurality of reinforcing ribs (64) are vertically arranged at the joint of the first annular disc (61) and the rolling plate (62) along the circumferential direction of the first annular disc (61) so as to enhance the supporting strength of the second supporting frame (6);
a fourth spigot is arranged on the upper surface of the second annular disc (63) and is used for fixing the second slewing bearing (32);
a plurality of second windows are formed in the circumferential side wall of the coiled plate (62), and bolt dismounting positions are provided for mounting and dismounting processes.
10. The nuclear main pump thrust bearing dismounting tool as claimed in claim 1, wherein a plurality of leveling screws uniformly arranged along the circumferential direction of the leveling platform (21) are adopted as the leveling pieces (22); after penetrating the leveling platform (21), the leveling screws are screwed into the bottom plate (1), and the levelness of the leveling platform (21) is adjusted by adjusting the screwing depth of each leveling screw in the bottom plate (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223444356.3U CN219275732U (en) | 2022-12-22 | 2022-12-22 | Nuclear main pump thrust bearing assembly and disassembly tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223444356.3U CN219275732U (en) | 2022-12-22 | 2022-12-22 | Nuclear main pump thrust bearing assembly and disassembly tools |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219275732U true CN219275732U (en) | 2023-06-30 |
Family
ID=86913665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223444356.3U Active CN219275732U (en) | 2022-12-22 | 2022-12-22 | Nuclear main pump thrust bearing assembly and disassembly tools |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219275732U (en) |
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2022
- 2022-12-22 CN CN202223444356.3U patent/CN219275732U/en active Active
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