Bearing bush turning and shaft holding device for nuclear power turbine generator set

Abstract

The utility model discloses a nuclear power turbo -generator unit bearing bush turns over and holds the axle device, including frame, and the frame includes the frame body, and the inside of frame body is semicircle, and the both ends of frame body are equipped with the first connecting plate and the second connecting plate with bearing bush connection respectively, and the frame body is equipped with first rolling component and second rolling component interval, and first rolling component includes first mounting support and is equipped with first gyro wheel in first mounting support, and first gyro wheel at least partial protrudes in the inside of frame body, and second rolling component includes second mounting support and is equipped with second gyro wheel in second mounting support, and second gyro wheel at least partial protrudes in the inside of frame body, application this nuclear power turbo -generator unit bearing bush turns over and holds the axle device, in the process of turning over, this first gyro wheel and second gyro wheel and axle journal are rolling friction, can effectively avoid the risk of scratching axle journal, effectively reduce the turning force when turning over, can improve the efficiency and security of turning over work.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power technology, and in particular to a bearing flipping and bearing clamping device for nuclear power steam turbine generator sets. Background Technology

[0002] The nuclear power plant's turbine is an HN1000-6.43 single-shaft, three-cylinder, four-exhaust condensing half-speed nuclear power turbine, containing one high-pressure cylinder and two low-pressure cylinders. It is designed with four floor-mounted bearing housings. During each annual turbine generator inspection, bearing overhaul is of paramount importance. Because the nuclear power unit is a half-speed unit, the equipment structure is large, the rotor is heavy, and the supporting bearing dimensions are relatively large. Each full bearing overhaul inspection requires extremely high standards. To prevent damage to the inner surface of the bearing from impact during the bearing overhaul process, the manufacturer designed a bearing-holding device, which is installed on the upper bearing before the lower bearing is removed. This prevents the bearing from tilting and impacting due to incorrect rotation angle or excessive lifting height. However, the bearing-holding device supplied by the manufacturer is a solid structure with a large overall weight, requiring a crane for transportation, making the operation cumbersome. In addition, the contact point between the bearing clamp and the journal is a lead plate, which is fixed by four M6 countersunk screws. When flipping the bearing, there is sliding friction between the lead plate and the shaft, which increases the flipping force. At the same time, after long-term use, the lead plate is prone to thinning and the fixing bolt holes are prone to opening, causing the journal to rub against the fixing bolts. The fixing countersunk screws may come out and scratch the journal. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a bearing journal clamping device for nuclear power turbine generator sets, so as to solve the technical problem that the clamping device of the related technology causes damage to the journal.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a bearing bearing flipping and clamping device for a nuclear power turbine generator set is constructed, including a frame, the frame including a frame body, the inner side of the frame body being semi-circular, and a first connecting plate and a second connecting plate respectively provided at both ends of the frame body for connecting with the bearing; a first rolling assembly and a second rolling assembly are provided at intervals on the frame body; the first rolling assembly includes a first mounting bracket and a first roller provided on the first mounting bracket, the first roller at least partially protruding from the inner side of the frame body; the second rolling assembly includes a second mounting bracket and a second roller provided on the second mounting bracket, the second roller at least partially protruding from the inner side of the frame body.

[0005] In some embodiments, the frame further includes a plurality of first reinforcing ribs and a plurality of second reinforcing ribs;

[0006] The first reinforcing rib connects the first connecting plate to the frame, and the second reinforcing rib connects the second connecting plate to the frame.

[0007] In some embodiments, the frame includes a first side plate, a second side plate, and a plurality of fixing plates. The first side plate and the second side plate are arranged parallel to each other, and the plurality of fixing plates connect the first side plate and the second side plate. The first side plate and the second side plate define an installation space.

[0008] The first rolling component and the second rolling component are installed within the installation space.

[0009] In some embodiments, the fixing plate includes a first sub-fixing plate and a second sub-fixing plate; the first sub-fixing plate is disposed opposite to the first mounting bracket, and the second fixing plate is disposed opposite to the second mounting bracket;

[0010] The first rolling assembly includes a first adjusting member, which passes through the first sub-fixed plate and is connected to the first mounting bracket for adjusting the position of the first mounting bracket; the second rolling assembly includes a second adjusting member, which passes through the second sub-fixed plate and is connected to the second mounting bracket for adjusting the position of the second mounting bracket.

[0011] In some embodiments, the nuclear power turbine generator set bearing roll-over and bearing clamping device further includes at least one lifting lug connected to the frame.

[0012] In some embodiments, the lugs are detachably connected to the frame.

[0013] In some embodiments, the frame is a single, integral structure.

[0014] In some embodiments, the frame is a frame made of aluminum alloy.

[0015] In some embodiments, both the first roller and the second roller are made of copper.

[0016] In some embodiments, the portion of the frame located above the first connecting plate and the second connecting plate is provided with a support rod.

[0017] The present invention offers the following advantages: By employing this nuclear power turbine generator bearing flipping and clamping device, the first and second rollers engage in rolling friction with the journal during the flipping process, effectively avoiding the risk of scratching the journal and reducing the flipping force, thus improving the efficiency and safety of the flipping operation. Furthermore, compared to existing technologies using a solid structure, the frame structure effectively reduces the overall weight of the device, facilitating handling and lowering manufacturing costs. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the present utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort. In the drawings:

[0019] Figure 1 This is one of the structural schematic diagrams of the bearing flipping and bearing clamping device of the nuclear power turbine generator set in some embodiments of this utility model;

[0020] Figure 2 This is the second schematic diagram of the structure of the bearing flipping and bearing clamping device of the nuclear power turbine generator set in some embodiments of this utility model;

[0021] Figure 3 This is the third schematic diagram of the structure of the bearing flipping and bearing clamping device of the nuclear power turbine generator set in some embodiments of this utility model;

[0022] Figure 4 This is one of the dimensional schematic diagrams of the bearing flipping and bearing clamping device of a nuclear power turbine generator set in some embodiments of this utility model;

[0023] Figure 5 This is the second dimensional schematic diagram of the bearing flipping and bearing clamping device of the nuclear power turbine generator set in some embodiments of this utility model;

[0024] Figure 6 This is the third schematic diagram showing the dimensions of the bearing flipping and bearing clamping device for nuclear power turbine generator sets in some embodiments of this utility model. Detailed Implementation

[0025] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0026] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "first," "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "first," "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0027] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0028] See Figures 1 to 3 This utility model discloses a bearing bearing flipping and clamping device for a nuclear power turbine generator set, including a frame 10. The frame 10 includes a body 11 with a semi-circular inner side. A first connecting plate 12 and a second connecting plate 13, respectively connected to the bearing bearing 100, are provided at both ends of the body 11. A first rolling assembly 20 and a second rolling assembly 30 are spaced apart on the body 11. The first rolling assembly 20 includes a first mounting bracket 21 and a first roller 22 disposed on the first mounting bracket 21, with the first roller 22 at least partially protruding from the inner side of the body 11. The second rolling assembly 30 includes a second mounting bracket 31 and a second roller 32 disposed on the second mounting bracket 31, with the second roller 32 at least partially protruding from the inner side of the body 11. In this embodiment, the bearing bearing 100 can be the lower bearing of a nuclear power turbine generator set. Figure 2 and Figure 3 The winning number 200 is a tile pillow.

[0029] The application of this nuclear power turbine generator set bearing overturning and clamping device is as follows: When bearing overturning operations are required, the first connecting plate 12 and the second connecting plate 13 are connected to the bearing 100 via threaded connections. During the overturning process, the first roller 22 and the second roller 32 experience rolling friction with the journal, effectively avoiding the risk of scratching the journal and reducing the overturning force, thus improving the efficiency and safety of the overturning operation. Furthermore, compared to existing clamping devices with a solid structure, the nuclear power turbine generator set bearing overturning and clamping device of this embodiment uses a frame 10 structure, which effectively reduces the overall weight of the device, facilitates transportation, and lowers manufacturing costs.

[0030] like Figure 1 As shown, in some embodiments, the inner side of the frame 11 is semi-circular, the outer side (or upper side) of the frame 11 is arc-shaped, and the outer sides of both ends of the frame 11 are planar structures.

[0031] like Figure 2 and Figure 3 As shown, in some embodiments, both ends of the first connecting plate 12 and the second connecting plate 13 protrude beyond both ends of the frame 11 in the width direction, so that the first connecting plate 12 and the second connecting plate 13 have sufficient contact area. The first connecting plate 12 may be provided with a plurality of first connecting holes for bolts or screws to pass through and connect to the end face of the bearing 100. Similarly, the second connecting plate 13 may be provided with a plurality of second connecting holes for bolts or screws to pass through and connect to the end face of the bearing 100. Both the first connecting holes and the second connecting holes may be threaded holes.

[0032] In some embodiments, both the first connecting plate 12 and the second connecting plate 13 can be rectangular plates. Of course, the shape and size of the first connecting plate 12 and the second connecting plate 13 can be selected and set according to actual needs, and no specific limitation is made here.

[0033] In some embodiments, the frame 10 further includes a plurality of first reinforcing ribs 14 and a plurality of second reinforcing ribs 15; the first reinforcing ribs 14 connect the first connecting plate 12 and the frame 11, and the second reinforcing ribs 15 connect the second connecting plate 13 and the frame 11, thereby improving the overall structural strength of the frame 10. Understandably, compared to the existing solid-structure bearing clamping devices, the nuclear power turbine generator bearing clamping device of this embodiment uses the frame 10 structure, which can effectively reduce the overall weight of the device, facilitate handling, and reduce manufacturing costs.

[0034] In some embodiments, the frame 11 includes a first side plate 111, a second side plate 112, and a plurality of fixing plates 113. The first side plate 111 and the second side plate 112 are arranged parallel to each other, and the plurality of fixing plates 113 connect the first side plate 111 and the second side plate 112. The first side plate 111 and the second side plate 112 define an installation space. The first rolling assembly 20 and the second rolling assembly 30 are installed in the installation space. The first reinforcing rib 14 may be the side of the first connecting plate 12 and the first side plate 111 facing away from the second side plate 112, and the second reinforcing rib 15 may be the side of the second connecting plate 13 and the second side plate 112 facing away from the first side plate 111.

[0035] Combination Figures 1 to 3 As shown, in some embodiments, the fixing plate 113 includes a first sub-fixing plate 1131 and a second sub-fixing plate 1132; the first sub-fixing plate 1131 is disposed opposite to the first mounting bracket 21, and the second sub-fixing plate 1132 is disposed opposite to the second mounting bracket 31.

[0036] The first rolling assembly 20 includes a first adjusting member 23, which passes through the first sub-fixed plate 1131 and is connected to the first mounting bracket 21, for adjusting the position of the first mounting bracket 21 so that the first roller 22 remains in contact with the journal. The second rolling assembly 30 includes a second adjusting member 33, which passes through the second sub-fixed plate 1132 and is connected to the second mounting bracket 31, for adjusting the position of the second mounting bracket 31 so that the second roller 32 remains in contact with the journal. The first adjusting member 23 and the second adjusting member 33 may be, but are not limited to, set screws.

[0037] like Figure 4 As shown, in some embodiments, the first rolling component 20 forms an angle of 45° with the horizontal plane, the second rolling component 30 forms an angle of 45° with the horizontal plane, and the angle between the first rolling component 20 and the second rolling component 30 is 90°.

[0038] In some embodiments, both the first roller 22 and the second roller 32 are made of copper. Both the first mounting bracket 21 and the second mounting bracket 31 may be made of copper.

[0039] like Figure 2 As shown, in some embodiments, the nuclear power turbine generator set bearing buckling and bearing clamping device further includes at least one lifting lug 40 connected to the frame 11. The lifting lug 40 may be connected to the middle of the outer side of the frame 11.

[0040] In some embodiments, the lug 40 is detachably connected to the frame 11. For example, the lug 40 may be detachably connected to a fixing plate 113 on the frame 11, for example, by a threaded connection.

[0041] In some embodiments, the frame 10 is a single-piece structure.

[0042] In some embodiments, the frame 10 is made of aluminum alloy. The frame 10 adopts a frame structure and is made of lightweight aluminum alloy material, which can reduce the weight of the equipment as much as possible while ensuring the strength of the equipment. The weight of a single bearing flipping and bearing holding device for nuclear power turbine generator sets does not exceed 10KG, which can be carried by a single person without occupying the overhead crane resources.

[0043] like Figure 1 As shown, a support rod 50 is provided on the portion of the frame 11 above the first connecting plate 12 and the second connecting plate 13. The two ends of the support rod 50 extend beyond the width of the frame 11, and the support rod 50 can be used to assist workers in handling the frame. The support rod 50 can be integrally formed with the frame 11 or detachably connected; no specific limitation is made here. In some embodiments, the support rod 50 may not be provided.

[0044] like Figures 4 to 6 These are some dimensional settings for the bearing flipping and clamping device of the nuclear power turbine generator set. The bearing flipping and clamping device of the nuclear power turbine generator set of this application can be implemented based on these dimensional parameters, which will not be described in detail here.

[0045] The bearing flipping and bearing clamping device for nuclear power turbine generator sets greatly facilitates the bearing flipping and bearing removal work during the maintenance of nuclear power turbine generator set bearings, improves the work efficiency of maintenance personnel, and completes the bearing flipping work of nuclear power turbine generator set bearings more safely, with better quality and efficiency.

[0046] It is understood that the above embodiments only illustrate preferred embodiments of the present utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present utility model patent. It should be noted that for those skilled in the art, the above technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present utility model, all of which fall within the protection scope of the present utility model. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present utility model should fall within the coverage of the claims of the present utility model.

Claims

1. A bearing buckling and bearing clamping device for a nuclear power turbine generator set, characterized in that, The frame (10) includes a frame body (11), the inner side of the frame body (11) is semi-circular, and the two ends of the frame body (11) are respectively provided with a first connecting plate (12) and a second connecting plate (13) connected to the bearing bush; the frame body (11) is provided with a first rolling assembly (20) and a second rolling assembly (30) at intervals; the first rolling assembly (20) includes a first mounting bracket (21) and a first roller (22) provided on the first mounting bracket (21), the first roller (22) at least partially protruding from the inner side of the frame body (11); the second rolling assembly (30) includes a second mounting bracket (31) and a second roller (32) provided on the second mounting bracket (31), the second roller (32) at least partially protruding from the inner side of the frame body (11).

2. The bearing buckling and bearing clamping device for nuclear power turbine generator sets according to claim 1, characterized in that, The frame (10) also includes a plurality of first reinforcing ribs (14) and a plurality of second reinforcing ribs (15); The first reinforcing rib (14) connects the first connecting plate (12) to the frame (11), and the second reinforcing rib (15) connects the second connecting plate (13) to the frame (11).

3. The bearing buckling and bearing clamping device for nuclear power turbine generator sets according to claim 1, characterized in that, The frame (11) includes a first side plate (111), a second side plate (112), and a plurality of fixing plates (113). The first side plate (111) and the second side plate (112) are arranged parallel to each other. The plurality of fixing plates (113) connect the first side plate (111) and the second side plate (112). The first side plate (111) and the second side plate (112) define an installation space. The first rolling component (20) and the second rolling component (30) are installed in the installation space.

4. The bearing buckling and bearing clamping device for nuclear power turbine generator sets according to claim 3, characterized in that, The fixing plate (113) includes a first sub-fixing plate (1131) and a second sub-fixing plate (1132); the first sub-fixing plate (1131) is disposed opposite to the first mounting bracket (21), and the second sub-fixing plate (1132) is disposed opposite to the second mounting bracket (31); The first rolling assembly (20) includes a first adjusting member (23), which passes through the first sub-fixed plate (1131) and is connected to the first mounting bracket (21) for adjusting the position of the first mounting bracket (21); the second rolling assembly (30) includes a second adjusting member (33), which passes through the second sub-fixed plate (1132) and is connected to the second mounting bracket (31) for adjusting the position of the second mounting bracket (31).

5. The bearing buckling and bearing clamping device for nuclear power turbine generator sets according to claim 3, characterized in that, The nuclear power turbine generator set bearing tilting and bearing clamping device also includes at least one lifting lug (40) connected to the frame (11).

6. The bearing buckling and bearing clamping device for nuclear power turbine generator sets according to claim 5, characterized in that, The lug (40) is detachably connected to the frame (11).

7. The bearing buckling and bearing clamping device for nuclear power turbine generator sets according to claim 1, characterized in that, The frame (10) is an integral structure.

8. The bearing buckling and bearing clamping device for nuclear power turbine generator sets according to claim 1, characterized in that, The frame (10) is made of aluminum alloy.

9. The bearing buckling and bearing clamping device for nuclear power turbine generator sets according to claim 1, characterized in that, Both the first roller (22) and the second roller (32) are made of copper.

10. The bearing bearing flipping and clamping device for nuclear power turbine generator sets according to claim 1, characterized in that, The frame (11) above the first connecting plate (12) and the second connecting plate (13) is provided with a support rod (50).

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