Supporting and adjusting frame for large vertical pump of nuclear power plant

Abstract

This utility model discloses a support and adjustment frame for a large vertical pump in a nuclear power plant, including a base plate, a top plate, and a support assembly. The support assembly connects the base plate and the top plate. The top plate supports the pump cover of the large vertical pump in the nuclear power plant. The top plate has a first adjustment hole. The upper surface of the top plate also has an adjustment block with a second adjustment hole. The frame also includes a first adjustment member and a second adjustment member. The first adjustment member passes through the first adjustment hole and abuts against the bottom surface of the portion of the pump cover located on the top plate to adjust the levelness of the pump cover. The second adjustment member passes through the second adjustment hole and abuts against the side surface of the portion of the pump cover located on the top plate to adjust the concentricity of the pump cover. Using this support and adjustment frame for a large vertical pump in a nuclear power plant, the levelness and concentricity of the pump cover can be precisely adjusted using the first and second adjustment members without the use of a crane, solving the problem of cumbersome adjustments. Furthermore, personnel do not need to stand under the lifting components, eliminating industrial safety risks.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power technology, and in particular to a large vertical pump support adjustment frame for nuclear power plants. Background Technology

[0002] The total weight of the pumpable components of a circulating water pump at a certain nuclear power plant is 21 tons, with a diameter of 3200mm. After a specified operating period, the equipment needs to be completely disassembled for inspection. During disassembly, the pumpable components will be hoisted as a whole to ground level in the pump house. Figure 1 As shown, by manually adding multiple wedge-shaped wooden blocks 300 to the pump cover 100 and impeller bracket 200, four wedge-shaped wooden blocks 300 can be set up. The position of the wedge-shaped wooden blocks 300 can be adjusted to adjust the level and concentricity of the pump cover 100. This scheme has the following disadvantages: (1) When adjusting, the pump cover 100 needs to be lifted by a crane. The pump is 5 meters high and weighs 21 tons. The operation of installing special lifting tools and lifting the pump cover 100 is extremely cumbersome, which is not only time-consuming and laborious, but also has low adjustment accuracy; (2) When adjusting, the wedge-shaped wooden blocks 300 need to be moved manually by the staff. The staff stand under the lifting heavy object, which poses an industrial safety risk. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a large vertical pump support adjustment frame for nuclear power plants.

[0004] The technical solution adopted by this utility model to solve its technical problem is: to construct a large vertical pump support adjustment frame for nuclear power plants, including a base plate, a top plate and several support components. The base plate and the top plate are arranged parallel to each other and spaced apart. The several support components connect the base plate and the top plate, and the several support components are arranged spaced apart along the circumferential direction of the top plate. Adjacent support components form a pedestrian passage.

[0005] The top plate has a ring-shaped structure and is used to support the pump cover of a large vertical pump in a nuclear power plant. The top plate has a plurality of first adjustment holes penetrating its upper and lower surfaces, and the plurality of first adjustment holes are spaced apart along the circumference of the top plate. The upper surface of the top plate is also provided with a plurality of adjustment blocks, the plurality of adjustment blocks are spaced apart along the circumference of the top plate, and each adjustment block is provided with a second adjustment hole, the second adjustment hole being oriented toward the axis of the top plate. The support adjustment frame for the large vertical pump in the nuclear power plant also includes a plurality of first adjustment members and a plurality of second adjustment members. The first adjustment members are used to pass through the first adjustment holes to abut against the bottom surface of the portion of the pump cover located on the top plate, so as to adjust the levelness of the pump cover. The second adjustment members are used to pass through the second adjustment holes to abut against the side surface of the portion of the pump cover located on the top plate, so as to adjust the concentricity of the pump cover.

[0006] In some embodiments, each of the support components includes two support plates, the lower end of which is connected to the base plate and the upper end of which is connected to the top plate.

[0007] In some embodiments, the support plate has a mounting plate at its bottom, and the mounting plate is detachably connected to the base plate.

[0008] In some embodiments, the base plate is provided with a plurality of first mounting holes, each mounting plate is provided with a plurality of second mounting holes, and the nuclear power plant large vertical pump support adjustment frame further includes a plurality of first fasteners, the plurality of first fasteners connecting the first mounting holes and the second mounting holes.

[0009] In some embodiments, a plurality of positioning plates are vertically provided on the lower surface of the top plate, and the plurality of positioning plates are spaced apart from the top plate in the circumferential direction. The upper end of the support plate is detachably connected to the positioning plates.

[0010] In some embodiments, each of the positioning plates is provided with a plurality of third mounting holes, and the upper end of the support plate is provided with a plurality of fourth mounting holes penetrating its inner and outer sides; the nuclear power plant large vertical pump support adjustment frame further includes a plurality of second fasteners, and the plurality of second fasteners connect the third mounting holes and the fourth mounting holes.

[0011] In some embodiments, each of the support components further includes two cross-arranged reinforcing plates, the two reinforcing plates connecting the two support plates.

[0012] In some embodiments, the top plate is annular, and the upper surface of the top plate near its axis is recessed downward to form an annular limiting groove, and the first adjusting hole and the adjusting block are disposed away from the limiting groove.

[0013] In some embodiments, the base plate has an annular structure.

[0014] In some embodiments, the inner cavity of the base plate is further provided with an interception and limiting structure;

[0015] The interception and limiting structure includes several tubes and several connecting blocks. The first end of each tube is connected to the inner wall of the base plate, and the second ends of adjacent tubes are connected and fixed by the connecting blocks.

[0016] The following are the beneficial effects of implementing this utility model: the application of this large vertical pump support adjustment frame for nuclear power plants allows for precise adjustment of the pump cover's level and concentricity using the first and second adjustment components without the need for a crane, solving the problem of cumbersome adjustment. At the same time, it eliminates the industrial safety risk by eliminating the need for personnel to stand under the lifting components. Attached Figure Description

[0017] 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:

[0018] Figure 1 This is a schematic diagram of the placement and adjustment of a large vertical pump based on related technologies;

[0019] Figure 2 This is a schematic diagram of the structure of a large vertical pump support adjustment frame for nuclear power plants in some embodiments of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of a large vertical pump support adjustment frame for nuclear power plants in some embodiments of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of a large vertical pump support adjustment frame for nuclear power plants in some embodiments of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of a large vertical pump support adjustment frame for nuclear power plants in some embodiments of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of a large vertical pump support adjustment frame for nuclear power plants in some embodiments of this utility model;

[0024] Figure 7 This is a schematic diagram of the structure of a large vertical pump support adjustment frame for nuclear power plants in some embodiments of this utility model;

[0025] Figures 8 to 12 This is a schematic diagram of the processing specifications of a large vertical pump support adjustment frame for nuclear power plants in some embodiments of this utility model. Detailed Implementation

[0026] 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.

[0027] 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.

[0028] 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.

[0029] See Figures 2 to 7 This utility model discloses a large vertical pump support adjustment frame for nuclear power plants, which includes a base plate 10, a top plate 20 and a plurality of support components 30. The base plate 10 and the top plate 20 are arranged parallel to each other and spaced apart. The plurality of support components 30 connect the base plate 10 and the top plate 20 and are spaced apart along the circumferential direction of the top plate 20. Adjacent support components 30 form a pedestrian passage 30a.

[0030] The top plate 20 has a ring structure and is used to support the pump cover 100 of the large vertical pump of the nuclear power plant. The impeller bracket of the large vertical pump of the nuclear power plant can be placed in the inner cavity of the support adjustment frame of the large vertical pump of the nuclear power plant. The top plate 20 is provided with a plurality of first adjustment holes 21 penetrating its upper and lower surfaces, and the plurality of first adjustment holes 21 are spaced apart along the circumferential direction of the top plate 20; the upper surface of the top plate 20 is also provided with a plurality of adjustment blocks 22, the plurality of adjustment blocks 22 are spaced apart along the circumferential direction of the top plate 20, and each adjustment block 22 is provided with a second adjustment hole 221, the second adjustment hole 221 being oriented toward the axis of the top plate 20. The large vertical pump support adjustment frame of the nuclear power plant also includes a plurality of first adjustment members 40 and a plurality of second adjustment members 50. The first adjustment members 40 are used to pass through the first adjustment holes 21 to abut against the bottom surface of the portion of the pump cover 100 located on the top plate 20 to adjust the levelness of the pump cover 100; the second adjustment members 50 are used to pass through the second adjustment holes 221 to abut against the side surface of the portion of the pump cover 100 located on the top plate 20 to adjust the concentricity of the pump cover 100.

[0031] See Figures 2 to 7 In some embodiments, the top plate 20 is annular, and the upper surface of the top plate 20 is recessed at one end near its axis to form an annular limiting groove 24. The first adjusting hole 21 and the adjusting block 22 are arranged to avoid the limiting groove 24.

[0032] See Figures 2 to 7 In some embodiments, there may be eight first adjusting holes 21 and eight first adjusting members 40. The first adjusting members 40 include, but are not limited to, adjusting set screws. Preferably, the first adjusting members 40 may be M24*60 bolts. Of course, the number and position of the first adjusting holes 21 can be selected according to actual needs, and no specific limitation is made here.

[0033] See Figures 2 to 7 In some embodiments, the second adjusting member 50 includes, but is not limited to, adjusting set screws. Preferably, the second adjusting member 50 may be an M24*60 bolt.

[0034] See Figures 2 to 7 In some embodiments, the top plate 20 may be a steel plate with an outer diameter of 3272 mm, an inner diameter of 2820 mm, and a thickness of 60 mm.

[0035] See Figures 2 to 7In some embodiments, each support assembly 30 may include two support plates 31, the lower end of which is connected to the base plate 10; the upper end of which is connected to the top plate 20. The lower end of the support plate 31 may be welded to the base plate 10, and the upper end of which is welded to the top plate 20. Alternatively, the lower end of the support plate 31 may be detachably connected to the base plate 10, and the upper end of which is detachably connected to the top plate 20.

[0036] See Figures 2 to 7 In some embodiments, the bottom of the support plate 31 is provided with a mounting plate 32, which is detachably connected to the base plate 10. The mounting plate 32 can be a rectangular plate or an arc-shaped plate, and the cross-sectional dimension of the mounting plate 32 is larger than the cross-sectional dimension of the support plate 31.

[0037] See Figures 2 to 7 In some embodiments, the base plate 10 is provided with a plurality of first mounting holes 11, and each mounting plate 32 is provided with a plurality of second mounting holes 321. The second mounting holes 321 are arranged to avoid the support plate 31. The large vertical pump support adjustment frame for nuclear power plants also includes a plurality of first fasteners 60, which connect the first mounting holes 11 and the second mounting holes 321. The first mounting holes 11 and the second mounting holes 321 can be threaded holes, and the first fasteners 60 can be, but are not limited to, fastening bolts or fastening screws. The number of corresponding first mounting holes 11 and second mounting holes 321 can be multiple, for example, four, so that the mounting plate 32 and the base plate 10 can be positioned and fixed, improving assembly accuracy.

[0038] See Figures 2 to 7 In some embodiments, the lower surface of the top plate 20 is provided with a plurality of positioning plates 23. The positioning plates 23 can be square plates or rectangular plates. The plurality of positioning plates 23 are spaced apart from the top plate 20 in the circumferential direction. The upper end of the support plate 31 is detachably connected to the positioning plates 23.

[0039] See Figures 2 to 7In some embodiments, each positioning plate 23 is provided with a plurality of third mounting holes 231, and the upper end of the support plate 31 is provided with a plurality of fourth mounting holes 311 penetrating its inner and outer sides; the large vertical pump support adjustment frame for nuclear power plants also includes a plurality of second fasteners 70, which connect the third mounting holes 231 and the fourth mounting holes 311. The number of the third mounting holes 231 and the fourth mounting holes 311 can be four, and the third mounting holes 231 and the fourth mounting holes 311 can be arranged in an array. The shape formed by the clockwise connection of the four third mounting holes 231 can be rectangular or square, so that after the third mounting holes 231 and the fourth mounting holes 311 are correspondingly connected, the support plate 31 and the positioning plate 23 can be positioned and fixed together, which can improve the assembly accuracy. The second fasteners 70 can be, but are not limited to, fastening bolts or fastening screws, which can be used with lock nuts and washers for locking.

[0040] In this embodiment, the base plate 10, the top plate 20, and the support component 30 are detachably assembled and fixed, and can be installed and fixed on site after the base plate 10, the top plate 20, and the support component 30 have been processed and prepared.

[0041] See Figures 2 to 7 In some embodiments, each support assembly 30 further includes two cross-arranged reinforcing plates 33, which connect the two support plates 31. The two reinforcing plates 33 are generally X-shaped and are welded to the upper and lower ends of the two support plates 31, respectively. The two reinforcing plates 33 can be welded together. The inclusion of the reinforcing plates 33 can improve the structural strength and stability of the entire support assembly 30.

[0042] In some embodiments, the support plate 31 may be made of 28# channel steel, and the reinforcing plate 33 may be made of 14# channel steel.

[0043] See Figures 2 to 7 In some embodiments, the base plate 10 has a ring-shaped structure. The base plate 10 can be made of steel plate with an outer diameter of 3272 mm, an inner diameter of 1500 mm, and a thickness of 60 mm. The inner cavity of the base plate 10 is also provided with an interception and limiting structure 80 to prevent the impeller support components from falling and directly hitting the ground.

[0044] See Figures 2 to 7 In some embodiments, the interception and limiting structure 80 includes a plurality of tubes 81 and a plurality of connecting blocks 82. The first ends of the plurality of tubes 81 are connected to the inner wall of the base plate 10, and the second ends of adjacent tubes 81 are connected and fixed by the connecting blocks 82. The tubes 81 can be round tubes, and the number of tubes 81 can be six, with the plurality of tubes 81 spaced apart.

[0045] In some embodiments, the large vertical pump support adjustment frame for nuclear power plants is applied as follows: the large vertical pump support adjustment frame for nuclear power plants is assembled, and then the pumpable components (e.g., impeller brackets) are hoisted into the large vertical pump support adjustment frame for nuclear power plants. The pump cover 100 is installed on the top plate 20. Then, the level of the pump cover 100 is adjusted using the first adjusting member 40, and the concentricity of the pump cover 100 is adjusted using the second adjusting member 50, so that other components connected to the pump cover 100 are also in a suitable level and concentricity. Then, the pumpable components are disassembled and assembled.

[0046] The application of this large vertical pump support adjustment frame for nuclear power plants effectively solves the problems of cumbersome operation, low adjustment accuracy, and industrial safety risks associated with the hoisting and wedge-shaped timber method used in related technologies. Using this large vertical pump support adjustment frame, the levelness and concentricity of the pump cover 100 can be precisely adjusted using the first adjustment component 40 and the second adjustment component 50 without the use of a crane. This solves the problem of cumbersome adjustment and eliminates the industrial safety risks by eliminating the need for personnel to stand under the hoisting components.

[0047] like Figures 8 to 12 The diagram shown is a schematic diagram of the processing specifications of a large vertical pump support adjustment frame for nuclear power plants in some embodiments of this utility model. Those skilled in the art can implement this utility model based on this schematic diagram, which will not be described in detail here.

[0048] 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 support adjustment frame for a large vertical pump of a nuclear power plant, characterized by, It includes a base plate (10), a top plate (20), and several support components (30). The base plate (10) and the top plate (20) are arranged parallel to each other and spaced apart. Several support components (30) connect the base plate (10) and the top plate (20), and the several support components (30) are arranged spaced apart along the circumferential direction of the top plate (20). Adjacent support components (30) form a pedestrian passage. The top plate (20) has an annular structure and is used to support the pump cover of a large vertical pump in a nuclear power plant. The top plate (20) has several first adjustment holes (21) penetrating its upper and lower surfaces, spaced apart along the circumference of the top plate (20). The upper surface of the top plate (20) also has several adjustment blocks (22), spaced apart along the circumference of the top plate (20), and each adjustment block (22) has a second adjustment hole (221). 221) The large vertical pump support adjustment frame of the nuclear power plant is arranged along the axis of the top plate (20). It also includes a number of first adjustment members (40) and a number of second adjustment members (50). The first adjustment member (40) is used to pass through the first adjustment hole (21) to abut against the bottom surface of the part of the pump cover located on the top plate (20) to adjust the level of the pump cover. The second adjustment member (50) is used to pass through the second adjustment hole (221) to abut against the side of the part of the pump cover located on the top plate (20) to adjust the concentricity of the pump cover.

2. The support alignment frame for large vertical pumps of nuclear power plants according to claim 1, characterized in that, Each of the support components (30) includes two support plates (31), the lower end of which is connected to the bottom plate (10); and the upper end of which is connected to the top plate (20).

3. The support alignment frame for large vertical pumps of nuclear power plants according to claim 2, characterized in that, The bottom of the support plate (31) is provided with an mounting plate (32), which is detachably connected to the base plate (10).

4. The support alignment frame for large vertical pumps of nuclear power plants according to claim 3, characterized in that, The base plate (10) is provided with a plurality of first mounting holes (11), and each mounting plate (32) is provided with a plurality of second mounting holes (321). The nuclear power plant large vertical pump support adjustment frame also includes a plurality of first fasteners (60), and the plurality of first fasteners (60) connect the first mounting holes (11) and the second mounting holes (321).

5. The support alignment frame for large vertical pumps of nuclear power plants according to claim 4, characterized in that, The lower surface of the top plate (20) is provided with a plurality of positioning plates (23), which are spaced apart from the top plate (20) in the circumferential direction. The upper end of the support plate (31) is detachably connected to the positioning plates (23).

6. The support alignment frame for large vertical pumps of nuclear power plants according to claim 5, characterized in that, Each of the positioning plates (23) is provided with a plurality of third mounting holes (231), and the upper end of the support plate (31) is provided with a plurality of fourth mounting holes (311) penetrating its inner and outer sides; the nuclear power plant large vertical pump support adjustment frame also includes a plurality of second fasteners (70), and the plurality of second fasteners (70) connect the third mounting holes (231) and the fourth mounting holes (311).

7. The support alignment frame for large vertical pumps in nuclear power plants according to claim 2, characterized in that, Each of the support components (30) further includes two cross-arranged reinforcing plates (33), which connect the two support plates (31).

8. The support alignment frame for large vertical pumps in nuclear power plants according to claim 1, characterized in that, The top plate (20) is annular, and the upper surface of the top plate (20) near its axis is recessed to form an annular limiting groove (24). The first adjusting hole (21) and the adjusting block (22) are arranged to avoid the limiting groove (24).

9. The support alignment frame for large vertical pumps in nuclear power plants according to claim 1, characterized in that, The base plate (10) has a ring-shaped structure.

10. The support alignment frame for large vertical pumps in nuclear power plants according to claim 1, characterized in that, The inner cavity of the base plate (10) is also provided with an interception and limiting structure (80); The interception and limiting structure (80) includes several tubes (81) and several connecting blocks (82). The first end of several tubes (81) is connected to the inner wall of the base plate (10), and the second ends of adjacent tubes (81) are connected and fixed through the connecting blocks (82).

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