CN219990967U

CN219990967U - Turnover device for large vertical pump of nuclear power plant

Info

Publication number: CN219990967U
Application number: CN202321619027.XU
Authority: CN
Inventors: 易凡; 廖开鑫; 范康乾; 吴炯; 周吉东
Original assignee: Guangxi Fangchenggang Nuclear Power Co Ltd
Current assignee: Guangxi Fangchenggang Nuclear Power Co Ltd
Priority date: 2023-06-25
Filing date: 2023-06-25
Publication date: 2023-11-10
Anticipated expiration: 2033-06-25

Abstract

The utility model discloses a turnover device for a large vertical pump of a nuclear power plant, which comprises a foot fixing assembly, a supporting frame and a turnover cylinder used for connecting the vertical pump; the turnover cylinder is rotatably connected to the supporting frame; the supporting frame is fixedly connected with the foot fixing component; the foot fixing component is fixedly connected to the external structure; the turnover cylinder comprises a cylinder body connected to one end of the vertical pump, a bottom plate arranged on one side of the cylinder body for supporting a bottom flow guiding device of the vertical pump, a bottom through hole arranged on the bottom plate for allowing a bell mouth of the vertical pump to pass through, and a jackscrew assembly for limiting radial movement of the vertical pump; the bottom through hole is matched with the horn mouth of the vertical pump in size _； The jackscrew assembly is in threaded connection with the cylinder body.The turnover device needs to be matched with hoisting equipment to turn the vertical pump from a vertical state to a horizontal state and from the horizontal state to the vertical state. The turnover device has the advantages of simple structure and use method, can save the maintenance period and ensure the safety of personnel and equipment.

Description

Turnover device for large vertical pump of nuclear power plant

Technical Field

The utility model relates to the technical field of large-scale equipment overturning of nuclear power plants, in particular to an overturning device for a large-scale vertical pump of a nuclear power plant.

Background

During the overhaul period of the nuclear power plant, large-scale equipment needs to be overturned and hoisted, and the large-scale equipment is large in size and weight generally, and the traditional method is complex in overturning and high in risk coefficient. Especially, the overturning and hoisting of large vertical pumps such as a condensate pump, a low-pressure drain pump and the like is a lifting high-risk operation, and the heavy loss is brought to the nuclear power plant due to the tension of the overhaul period, such as personnel and equipment injury in the whole-inspection hoisting process.

At present, large-scale equipment such as large-scale vertical pump is hoisted by means of hoisting equipment, the vertical pump is slowly turned horizontally or vertically, workers are required to support and cooperate during the process, scratch risks and personnel injury risks exist, and efficiency is low.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a turnover device for a large vertical pump of a nuclear power plant.

The technical scheme adopted for solving the technical problems is as follows: a turnover device for a large vertical pump of a nuclear power plant comprises a foot fixing component, a supporting frame and a turnover cylinder for connecting the vertical pump;

the turnover cylinder is rotatably connected to the supporting frame; the supporting frame is fixedly connected with the foot fixing assembly; the foot fixing component is fixedly connected to the external structure;

the turnover cylinder comprises a cylinder body connected to one end of the vertical pump, a bottom plate arranged on one side of the cylinder body for supporting a bottom flow guiding device of the vertical pump, a bottom through hole arranged on the bottom plate for allowing a bell mouth of the vertical pump to pass through, and a limiting deviceA jack screw assembly radially moved by the vertical pump; the bottom through hole is matched with the horn mouth of the vertical pump in size _； The jackscrew assembly is in threaded connection with the cylinder body.

Preferably, in the turning device for a large vertical pump of a nuclear power plant according to the present utility model, the jackscrew assembly includes at least 4 groups of jackscrews, and the 4 groups of jackscrews are disposed at intervals along the cylinder, and are opposite to each other.

Preferably, in the turning device for a large vertical pump of a nuclear power plant according to the present utility model, the turning cylinder further includes two connecting shafts, and the two connecting shafts are oppositely disposed at the outer side of the cylinder; the connecting shafts are respectively and rotatably connected with the supporting frames, and the overturning cylinder rotates around the shortest connecting line of the two connecting shafts.

Preferably, in the turning device for a large-scale vertical pump of a nuclear power plant according to the present utility model, the support frame includes a bottom frame and two supports; the two supporting pieces are oppositely arranged on the bottom frame, and the two connecting shafts are in one-to-one rotary connection with the two supporting pieces;

the bottom frame is fixedly connected with the foot fixing assembly.

Preferably, in the turning device for a large vertical pump of a nuclear power plant according to the present utility model, the turning device further includes a baffle plate for restricting axial movement of the vertical pump, and the baffle plate is detachably connected to an end of the cylinder.

Preferably, in the turning device for a large-scale vertical pump of a nuclear power plant according to the present utility model, the turning device further includes a positioning member for preventing the turning cylinder from rotating, and the positioning member is detachably connected to the support frame and the turning cylinder, respectively.

Preferably, in the turning device for a large vertical pump of a nuclear power plant according to the present utility model, the positioning member is a positioning bolt, and the positioning bolt is screwed with the support frame; when positioning is realized, the positioning bolt is also in threaded connection with the overturning cylinder.

Preferably, in the turnover device for a large vertical pump of a nuclear power plant according to the present utility model, the top screw assembly further comprises a plurality of buffer blocks, and the buffer blocks are disposed on an end portion of the top screw located inside the cylinder.

Preferably, in the turning device for a large-scale vertical pump of a nuclear power plant according to the present utility model, the turning device further comprises a protection pad connected to an inner sidewall of the cylinder to prevent damage of the vertical pump.

Preferably, in the turning device for a large-scale vertical pump of a nuclear power plant according to the present utility model, the turning cylinder further includes a handle welded to an outer sidewall of the cylinder.

By implementing the utility model, the following beneficial effects are achieved:

the turnover device for the large vertical pump of the nuclear power plant needs to be matched with hoisting equipment to turn the large vertical pump of the nuclear power plant from a vertical state to a horizontal state, and turn the large vertical pump of the nuclear power plant from the horizontal state to the vertical state and any angle between the horizontal and the vertical states. The turnover device has the advantages of simple structure and use method, can save the maintenance period and ensure the safety of personnel and equipment.

Drawings

The utility model will be further described with reference to the accompanying drawings and examples, in which:

FIG. 1 is a schematic diagram of a turning device for a large-scale vertical pump of a nuclear power plant according to an embodiment of the present utility model;

FIG. 2 is a side view of the turning device for the large vertical pump of the nuclear power plant of FIG. 1 according to the present utility model;

fig. 3 is a top view of the turning device for the large vertical pump of the nuclear power plant in fig. 1 according to the present utility model.

Detailed Description

For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with reference to the accompanying drawings.

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or chemically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

Referring to fig. 1 to 3, an embodiment of the present utility model discloses a turning device for a large vertical pump of a nuclear power plant, which is dedicated for turning of the large vertical pump, and mainly can achieve turning from a horizontal direction to a vertical direction and turning from a vertical direction to a horizontal direction, and can achieve turning of any angle between the horizontal direction and the vertical direction if there is a special need in practical situations. It can be understood that the utility model is specially used for turning over the large vertical pump, and the turning over device of the utility model can be equally applicable to turning over other vertical large equipment by matching with the simple structural change of other vertical large equipment, and the utility model belongs to the protection scope of the utility model.

The tilting device of the utility model comprises in some embodiments a foot fixing assembly 1, a support frame 2 and a tilting drum 3 for connection to a vertical pump. The turnover cylinder 3 is rotatably connected to the supporting frame 2, the supporting frame 2 is fixedly connected with the foot fixing assembly 1, and the foot fixing assembly 1 is fixedly connected to an external structure. The external structure refers to other flat top devices with larger gravity such as the ground, and the foot fixing assembly 1 is used for being connected with other flat top devices with larger gravity such as the ground, so as to position the whole overturning device and prevent the whole overturning. The supporting frame 2 is used for supporting the turnover cylinder 3 and enabling the turnover cylinder 3 to rotate. The rotating drum 3 can achieve a rotation range of 90 ° -180 °, i.e. vertical to horizontal or horizontal to vertical. Preferably, the foot fixing assembly 1 comprises an anchor expansion bolt, a foot mounting plate and a mounting column in some embodiments, and a mounting hole is formed at the bottom of the supporting frame 2 and detachably connected with the mounting column or welded and fixed. Generally, the number of the mounting holes is 4, the mounting holes are respectively arranged at four corners of the supporting frame 2, the number of the foot mounting plates and the mounting columns is also 4, and the foot mounting plates and the mounting columns are distributed right below the mounting holes. It will be appreciated that this embodiment is only an example, and in a practical situation, there are many ways of implementing the foot fixing assembly 1, and only the connection with the ground or other flat top device with large gravity and the support frame need be satisfied, and the present utility model is not limited to the structure of the foot fixing assembly 1.

As shown in fig. 1, the inversion barrel 3 in some embodiments includes a barrel 31 that is coupled to one end of the vertical pump, a bottom plate 32 that is provided on one side of the barrel 31 to support a bottom deflector of the vertical pump, a bottom through hole 33 provided in the bottom plate 32 through which a bell mouth of the vertical pump passes, and a jack screw assembly 34 that restricts radial movement of the vertical pump. The bottom through hole 33 is matched with the horn mouth of the vertical pump in size, so that the horn mouth can pass through conveniently. The jackscrew assembly 34 is in threaded connection with the cylinder 31, so that radial fixation of the turnover device and the vertical pump can be realized. Further, the plug assembly 34 in some embodiments includes at least 4 sets of plug 341,4 sets of plug 341 spaced along the barrel 31, opposite one another. Preferably, the position of any group of jackscrews 341 is defined as 0 ° of the cylinder 31, and the other three groups of jackscrews 341 are respectively arranged at 90 °, 180 ° and 270 ° of the cylinder 31. As shown in fig. 2 or 3, each group of jackscrews 341 includes at least two jackscrews 341, and the two jackscrews 341 are arranged along the axial direction of the cylinder 31. The cylinder 31 of the turnover cylinder 3 is correspondingly provided with a plurality of jackscrew 341 holes for the jackscrews 341 to be screwed.

Further, the top wire assembly 34 in some embodiments further comprises several buffer blocks 342, the buffer blocks 342 being provided on the end of the top wire 341 inside the cylinder 31 for preventing the top wire 341 from scratching the vertical pump. Preferably, one buffer block 342 is provided on one of the jackscrews 341, and the number of buffer blocks 342 is the same as the number of jackscrews 341. The buffer block 342 is made of a material having elasticity such as sponge or rubber.

As shown in fig. 1 or 3, the flipping cylinder 3 further includes two connecting shafts 35 in some embodiments, where the two connecting shafts 35 are oppositely disposed on the outer side of the cylinder 31; the connecting shafts 35 are rotatably connected with the support frame 2, respectively, and the overturning cylinder 3 rotates around the shortest connecting line of the two connecting shafts 35. The shortest connecting line of the two connecting shafts 35 refers to a connecting line between the two connecting shafts 35 perpendicular to the axial direction of the cylinder 31.

As shown in fig. 1, to support the turnover drum 3 and realize the rotation of the turnover drum 3, the support frame 2 in some embodiments includes a bottom frame 21 and two supporting members 22, the two supporting members 22 are oppositely disposed on the bottom frame 21, two connecting shafts 35 are rotatably connected with the two supporting members 22 one by one, and the bottom frame 21 is fixedly connected with the foot fixing assembly 1. It will be appreciated that the two supports 22 are rigidly connected to the bottom frame 21, the bottom frame 21 and the supports 22 having a certain weighing capacity and may be of a metallic material, such as steel, iron, an alloy or the like.

In order to prevent the vertical pump from sliding out of the turnover cylinder 3, the turnover device further comprises a baffle for limiting the axial movement of the vertical pump, the baffle is detachably connected with the end part of the cylinder body 31 and used for limiting the vertical pump after the vertical pump abuts against the bottom plate 32 of the turnover cylinder 3, and the part of the vertical pump which enters the turnover cylinder 3 is prevented from sliding out of the turnover cylinder 3, so that damage occurs and the subsequent turnover work is influenced. Wherein the baffles are not shown in the figures.

The tilting device in some embodiments further comprises a positioning member 4 for preventing the tilting cylinder 3 from rotating, the positioning member 4 being detachably connected to the support frame 2 and the tilting cylinder 3, respectively. Preferably, the positioning members 4 include two, one positioning member 4 is connected to one supporting member 22 and disposed opposite to each other, and detachably connected to the overturning cylinder 3, respectively. Two positioning holes for the positioning piece 4 to be screwed are correspondingly arranged on the cylinder body 31 of the turnover cylinder 3. It will be appreciated that the flip cylinder 3 comprises two states, a rotated state and a positioned state, only the positioned state requiring the use of the positioning member 4. The use conditions of the positioning piece 4 mainly comprise two types, wherein the first type is that before turning, the turning cylinder 3 needs to be positioned so that part of the vertical pump can smoothly enter the turning cylinder 3; the second is to position the turning cylinder 3 after turning over so that the vertical pump can smoothly move out of the turning cylinder 3. Wherein, the above-mentioned vertical pump's removal all adopts lifting device to carry out handling.

Further, the positioning piece 4 is a positioning bolt which is in threaded connection with the supporting frame 2; when the positioning is realized, the positioning bolt is also in threaded connection with the overturning cylinder 3. That is, in the case where the positioning of the rotating drum 3 is not required, that is, in the rotated state, the positioning bolts may be screwed to the support frame 2 or may be placed aside on the principle that the rotation of the rotating drum 3 is not hindered. When the positioning is needed, the positioning bolts need to be screwed with the supporting frame 2, penetrate through part of bolts of the supporting frame 2 and then are screwed with the overturning cylinder 3, the overturning cylinder 3 can enter a positioning state, and after the positioning is finished, the positioning bolts are screwed off the overturning cylinder 3 to restore the rotating state.

To protect the vertical pump from scratches, the turning device in some embodiments further comprises a protective pad attached to the inner sidewall of the cylinder 31 to prevent damage to the vertical pump. Preferably, the protective pad comprises two protective pads which are respectively arranged oppositely. Wherein the protective pad is not shown in the figures.

As shown in fig. 1, the flip cylinder 3 further includes a handle 5, and the handle 5 is welded to the outer side wall of the cylinder 31 for convenience of operation. When the turnover drum 3 is rotated, the operator can conveniently hold the turnover drum.

During the use of the turnover device, lifting and transporting are needed by matching with lifting equipment. For example, when the vertical pump needs to be turned vertically to horizontally, the vertical pump is slowly lowered into the turning cylinder 3 by using the lifting device, the bottom guide device of the vertical pump is contacted with the bottom plate 32 of the turning cylinder 3 and then stops to descend, the jackscrew assembly 34 is abutted against the bottom guide device to realize radial positioning, the baffle is connected with the cylinder 31 to limit the axial movement of the bottom guide device, after the positioning is completed, the positioning bolt is withdrawn, the turning device is used as a fulcrum, the lifting device is used as another fulcrum, the vertical pump is turned to the horizontal state from the vertical state by lifting and horizontally moving the lifting device, the positioning bolt is screwed in to position the turning cylinder 3, the turning cylinder is limited to rotate, the jackscrew assembly 34 on the turning cylinder is withdrawn, the baffle is disassembled, and the turning device is removed from the bottom guide device of the vertical pump, so that the turning work is completed. And similarly, when the vertical pump is turned from the horizontal state to the vertical state, the vertical pump is reversely operated according to the related process.

It is to be understood that the above examples only represent preferred embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model; it should be noted that, for a person skilled in the art, the above embodiments or technical features may be freely combined, and several variations and modifications may be made, without departing from the spirit of the utility model, which fall within the scope of the utility model, i.e. the embodiments described in "some embodiments" may be freely combined with any of the above and below embodiments; therefore, all changes and modifications that come within the meaning and range of equivalency of the claims are to be embraced within their scope.

Claims

1. The turnover device for the large vertical pump of the nuclear power plant is characterized by comprising a foot fixing assembly (1), a supporting frame (2) and a turnover cylinder (3) for connecting the vertical pump;

the overturning cylinder (3) is rotatably connected to the supporting frame (2); the supporting frame (2) is fixedly connected with the foot fixing assembly (1); the foot fixing component (1) is fixedly connected to an external structure;

the turnover cylinder (3) comprises a cylinder body (31) connected to one end of the vertical pump, a bottom plate (32) arranged on one side of the cylinder body (31) for supporting a bottom flow guiding device of the vertical pump, a bottom through hole (33) arranged on the bottom plate (32) for allowing a bell mouth of the vertical pump to pass through, and a jackscrew assembly (34) for limiting radial movement of the vertical pump; the bottom through hole (33) is matched with the horn mouth of the vertical pump in size _； The jackscrew assembly (34) is in threaded connection with the cylinder body (31).

2. The turning device for a large vertical pump of a nuclear power plant according to claim 1, wherein the jackscrew assembly (34) comprises at least 4 groups of jackscrews (341), the 4 groups of jackscrews (341) being arranged at intervals along the cylinder (31), two by two.

3. The turning device for a large vertical pump of a nuclear power plant according to claim 1, characterized in that the turning cylinder (3) further comprises two connecting shafts (35), the two connecting shafts (35) being oppositely arranged outside the cylinder (31); the connecting shafts (35) are respectively and rotatably connected with the supporting frame (2), and the overturning cylinder (3) rotates around the shortest connecting line of the two connecting shafts (35).

4. A turning device for a large vertical pump of a nuclear power plant according to claim 3, characterized in that the supporting frame (2) comprises a bottom frame (21) and two supports (22); the two supporting pieces (22) are oppositely arranged on the bottom frame (21), and the two connecting shafts (35) are in one-to-one rotary connection with the two supporting pieces (22);

the bottom frame (21) is fixedly connected with the foot fixing assembly (1).

5. The turning device for a large vertical pump of a nuclear power plant according to claim 1, characterized in that it further comprises a baffle for limiting the axial movement of the vertical pump, which baffle is detachably connected to the end of the cylinder (31).

6. The turning device for a large vertical pump of a nuclear power plant according to claim 1, characterized in that it further comprises a positioning member (4) for preventing the turning cylinder (3) from rotating, said positioning member (4) being detachably connected to the support frame (2) and the turning cylinder (3), respectively.

7. The turning device for a large vertical pump of a nuclear power plant according to claim 6, characterized in that the positioning element (4) is a positioning bolt which is screwed with the support frame (2); when positioning is realized, the positioning bolt is also in threaded connection with the overturning cylinder (3).

8. The turning device for a large vertical pump of a nuclear power plant according to claim 2, characterized in that the jackscrew assembly (34) further comprises several buffer blocks (342), the buffer blocks (342) being arranged on the end of the jackscrew (341) inside the cylinder (31).

9. The turning device for a large vertical pump of a nuclear power plant according to any one of claims 1 to 8, further comprising a protective pad attached to the inside wall of the cylinder (31) to prevent damage to the vertical pump.

10. The turning device for a large vertical pump of a nuclear power plant according to any one of claims 1 to 8, characterized in that the turning cylinder (3) further comprises a handle (5), the handle (5) being welded to the outer side wall of the cylinder (31).