Nuclear power steam turbine generator set wheel pin storage rack

Abstract

The utility model discloses a storage rack for wheel pins of a nuclear power steam turbine generator set, which includes at least one frame, wherein the first side surface of each frame is provided with a plurality of first bearing parts for bearing wheel pin bolts from top to bottom, and each first bearing part is provided with a first protective pad; the second side surface of the frame is provided with a plurality of second bearing parts for bearing wheel pin bolts from top to bottom, and each second bearing part is provided with a second protective pad; and the frame is provided with support plates for storing wheel nuts and / or pin sleeves at intervals from top to bottom. The rack can make it very safe and convenient to put in and take out wheel pin bolts, and maintenance personnel can better inspect, detect flaws, trim, and remove rust on the wheel pin bolts. The protective pad can play a special protective role on the wheel pin bolts, avoiding a large number of thread repair work that should not occur due to collision between threads, and scratches on the wheel pin bolts caused by other causes, effectively saving the overhaul period.

Description

Technical Field

[0001] The utility model relates to the technical field of nuclear power, in particular to a storage rack for wheel pins of a nuclear power steam turbine generator set. Background Art

[0002] The steam turbine of a nuclear power plant contains one high-pressure cylinder and two low-pressure cylinders, among which the high-low pressure coupling, low-low pressure coupling, low-generation coupling, etc. are connected by flanges and rigidly connected by hydraulic super-tight coupling pins (or turbine wheel pins).

[0003] At present, due to the lack of special storage devices for wheel pins, the threads and pin surfaces of the wheel pins collide with each other, especially during the transportation and metal inspection (magnetic powder and hardness inspection) of the wheel pins, the collisions between the threads of the wheel pin bolts and the collisions and scratches on the surfaces of the wheel pins are very obvious, resulting in a large number of unnecessary thread and wheel pin surface repair work; at the same time, the storage area for the wheel pins after disassembly is too large, which is not conducive to standardized management on site and inconvenient for maintenance personnel to take. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a storage rack for wheel pins of a nuclear power steam turbine generator set.

[0005] The utility model solves the technical problem by adopting a technical solution: constructing a nuclear power steam turbine generator set wheel pin storage rack, comprising at least one rack body, wherein the rack body has a first side surface and a second side surface opposite to each other;

[0006] A first side surface of each of the frames is provided with a plurality of first bearing parts for bearing the wheel pin bolts from top to bottom, each of the first bearing parts is opened upward, and each of the first bearing parts is provided with a first protective pad;

[0007] The second side surface of the frame body is provided with a plurality of second bearing parts for bearing the wheel pin bolts from top to bottom, each of the second bearing parts is opened upward, and each of the second bearing parts is provided with a second protective pad;

[0008] Support plates for accommodating wheel nuts and / or pin sleeves are arranged in intervals from top to bottom in the frame body.

[0009] In some embodiments, the first bearing parts are distributed in a stepped manner from top to bottom;

[0010] The plurality of second bearing parts are distributed in a stepped manner from top to bottom.

[0011] In some embodiments, each of the first bearing portions includes at least two first sub-bearing portions, and the at least two first sub-bearing portions are arranged at intervals along a horizontal direction.

[0012] In some embodiments, each of the second bearing portions includes at least two second sub-bearing portions, and the at least two second sub-bearing portions are arranged at intervals along the horizontal direction.

[0013] In some embodiments, the first sub-bearing portion is arc-shaped;

[0014] The second sub-bearing portion is arc-shaped.

[0015] In some embodiments, a receiving space is formed on the support plate;

[0016] The frame has a third side surface and a fourth side surface that are opposite to each other; the third side surface and / or the fourth side surface is provided with an inlet and outlet, and the inlet and outlet are connected to the accommodating space.

[0017] In some embodiments, a protective member is provided on the support plate.

[0018] In some embodiments, the first protective pad and the second protective pad are both nylon pads.

[0019] In some embodiments, the frame is provided with hanging ears.

[0020] In some embodiments, the number of the frames is two, the two frames are arranged at intervals in the horizontal direction, and the two frames are connected and fixed by a connecting beam.

[0021] The implementation of the utility model has the following beneficial effects: it makes it very safe and convenient to put in and take out the wheel pin bolts, and maintenance personnel can better inspect, detect flaws, trim, and remove rust on the wheel pin bolts. The protective pad can play a special protective role on the wheel pin bolts, avoiding a large number of unnecessary thread repair work caused by collision between threads, and scratches on the wheel pin bolts caused by other reasons, effectively saving the overhaul period. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the utility model, the 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 certain embodiments of the utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0023] Figure 1 It is a structural schematic diagram of a storage rack for wheel pins of a nuclear power steam turbine generator set in some embodiments of the utility model;

[0024] Figure 2 yes Figure 1 A cross-sectional view of the wheel pin storage rack of a nuclear power steam turbine generator set along line AA;

[0025] Figure 3 It is a structural schematic diagram of a storage rack for wheel pins of a nuclear power steam turbine generator set in some embodiments of the utility model;

[0026] Figure 4 It is a structural schematic diagram of a wheel pin storage rack for a nuclear power steam turbine generator set in other embodiments of the utility model. DETAILED DESCRIPTION

[0027] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0028] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0029] In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details that hinder the description of the present invention.

[0030] See also Figures 1 to 3 The utility model shows a nuclear power steam turbine generator set wheel pin storage rack, which includes at least one frame 10, the frame 10 has a first side surface and a second side surface opposite to each other;

[0031] like Figure 1 As shown, the first side surface of each frame 10 is provided with a plurality of first bearing parts 20 for bearing the wheel pin bolts 100 from top to bottom along the height direction, each first bearing part 20 is opened upward, and each first bearing part 20 is provided with a first protective pad 30. The first bearing part 20 can be generally arc-shaped or semi-circular hook-shaped.

[0032] The second side surface of the frame 10 is provided with a plurality of second bearing parts 40 for bearing the wheel pin bolts 100 from top to bottom along the height direction, each second bearing part 40 is provided with an opening facing upward, and each second bearing part 40 is provided with a second protective pad 50. The second bearing part 40 may be substantially arc-shaped or semi-circular hook-shaped. The second bearing part 40 and the first bearing part 20 may be symmetrically arranged.

[0033] Support plates 60 for accommodating the wheel nuts and / or the pin sleeves 200 are arranged at intervals from top to bottom in the frame body 10 .

[0034] Furthermore, if Figure 1 As shown, a plurality of first bearing portions 20 are distributed in a stepped manner from top to bottom along the height direction. Figure 1 For example, from top to bottom along the height direction, the center of the first bearing part 20 gradually moves away from the axis of the frame 10. Understandably, the stepped arrangement can ensure that maintenance personnel can use both hands to carry the wheel pin bolts 100, avoiding the problem that maintenance personnel cannot easily access the wheel pins of the nuclear power steam turbine generator set from the wheel pin storage rack due to the excessive weight of the coupling wheel pins (each set of wheel pins weighs about 25KG). Further, the distance between two adjacent first bearing parts 20 in height can be 155mm.

[0035] Similarly, the second bearing portions 40 are distributed in a stepped manner from top to bottom. Figure 1 For example, from top to bottom along the height direction, the center of the second bearing portion 40 gradually moves away from the axis of the frame 10. Understandably, the stepped arrangement can ensure that maintenance personnel can use both hands to carry the wheel pin bolts 100, avoiding the problem that maintenance personnel cannot easily take the wheel pins of the nuclear power steam turbine generator set from the wheel pin storage rack due to the excessive weight of the coupling wheel pins (each set of wheel pins weighs about 25KG).

[0036] In some embodiments, the number of the first bearing parts 20 may be five or more, for example, five, six, seven, eight, or nine. Preferably, the number of the first bearing parts 20 may be seven.

[0037] Similarly, the number of the second bearing parts 40 is the same as the number of the first bearing parts 20. The number of the second bearing parts 40 can be five or more, for example, five, six, seven, eight, or nine. Preferably, the number of the first bearing parts 20 can be seven.

[0038] like Figure 1 As shown, in some embodiments, the first protection pad 30 and the second protection pad 50 are both nylon pads, and the first protection pad 30 can be fixed on the surface of the first bearing part 20 by glue, and the first protection pad 30 can be semi-circular, and its radius can be 35mm. Similarly, the second protection pad 50 can be fixed on the surface of the second bearing part 40 by glue, and the second protection pad 50 can be semi-circular, and its radius can be 35mm.

[0039] like Figure 3 As shown, in some embodiments, each first bearing portion 20 includes at least two first sub-bearing portions 21, and the at least two first sub-bearing portions 21 are arranged at intervals in the horizontal direction, so that there is an operating space between the two first sub-bearing portions 21, which is convenient for maintenance personnel to use both hands to carry the wheel pin bolt 100 through the operating space.

[0040] like Figure 3 As shown, in some embodiments, each second bearing portion 40 includes at least two second sub-bearing portions 41, and the at least two second sub-bearing portions 41 are arranged at intervals in the horizontal direction, so that there is an operating space between the two second sub-bearing portions 41, which is convenient for maintenance personnel to use both hands to carry the wheel pin bolt 100 through the operating space.

[0041] Understandably, the wheel pin bolts 100 are stored horizontally. Since the wheel pin bolts 100 are relatively large in size, the weight of a single wheel pin bolt 100 reaches about 25KG, and the wheel pin bolts 100 are designed as expansion-tightening type, and there are oil lines on the surface of the wheel pin bolts 100 and no scratches on the surface of the pin sleeve 200, cost protection is particularly important. The design structure of the wheel pin storage rack of the nuclear power steam turbine generator set avoids bumping against important sealing surfaces. At the same time, the horizontal placement method makes it convenient for maintenance personnel to use the wheel pin bolts 100 with both hands or two people to use them together, avoiding unnecessary bumping and industrial safety risks of taking the wheel pin bolts 100.

[0042] In some embodiments, the first sub-bearing portion 21 is arc-shaped. The second sub-bearing portion 41 is arc-shaped. The shape and size of the first sub-bearing portion 21 are compatible with the wheel pin bolt 100, and the shape and size of the second sub-bearing portion 41 are compatible with the wheel pin bolt 100.

[0043] like Figure 1 and Figure 2As shown, in some embodiments, a accommodating space is formed on the support plate 60, and the support plate 60 can be a cylindrical structure. The frame 10 has a third side and a fourth side relative to each other; the third side and / or the fourth side are provided with an inlet and outlet 11, and the inlet and outlet 11 are connected to the accommodating space to facilitate maintenance personnel to take and place the wheel nuts and / or pin sleeves 200.

[0044] In some embodiments, a protective member is provided on the support plate 60, and the protective member includes but is not limited to a rubber pad. The protective member can protect the pair of wheel nuts and / or pin sleeves 200 from damage and facilitate the maintenance needs of maintenance personnel.

[0045] In some embodiments, the frame 10 is provided with a lifting lug 12, and the lifting lug 12 may be provided at the top of the frame 10. The lifting lug 12 is provided to facilitate the overall lifting of the wheel pin storage rack of the nuclear power steam turbine generator set, and facilitate the placement at the maintenance site.

[0046] like Figure 1 and Figure 2 As shown, in some embodiments, a support rod 14 is further disposed in the frame 10, and a plurality of support plates 60 can be passed through the support rod 14. The support rod 14 can play a reinforcing role.

[0047] In some embodiments, the frame 10 may be formed by welding channel steel and / or square steel together, which is not specifically limited here. The frame 10 is roughly in the shape of a column, with a height of about 1110 mm, a width of about 380 mm at the top, and a height of about 800 mm at the bottom.

[0048] In some embodiments, the rack 10 may be provided with a storage mark. Specifically, each set of nuclear power steam turbine generator set wheel pins corresponds to a nuclear power steam turbine generator set wheel pin storage rack, and independent nuclear power steam turbine generator set wheel pins are marked on the nuclear power steam turbine generator set wheel pin storage rack to prevent mixing.

[0049] like Figure 4 As shown, in some embodiments, there are two frames 10, which are arranged at intervals in the horizontal direction, and the two frames 10 are connected and fixed by a connecting beam 13. Each frame 10 may be provided with a lifting lug 12.

[0050] In other embodiments, the number of the frames 10 may be more than two, such as three, four, etc., which is not specifically limited here.

[0051] In some embodiments, when there is one frame 10, a base may be provided at the bottom of the frame 10. When there are two or more frames 10, a base may be provided at the bottom of each frame 10, or all frames 10 may share one base.

[0052] In some embodiments, the frame 10 can be an integrated structure with the first bearing part 20 and the second bearing part 40. The frame 10, the first bearing part 20 and the second bearing part 40 can be made of metal materials, which include but are not limited to stainless steel, carbon steel or aluminum alloy, etc., and are not specifically limited here.

[0053] Understandably, the wheel pin storage rack for nuclear power steam turbine generator sets has the following technical effects: it makes it very safe and convenient to put and take the wheel pin bolts, and maintenance personnel can better inspect, detect flaws, trim, and remove rust on the wheel pin bolts. The protective pad can play a special protective role for the wheel pin bolts, avoiding a large number of unnecessary thread repairs caused by collisions between threads, as well as other scratches on the wheel pin bolts, effectively saving the overhaul period. It can be arranged in an orderly manner at the maintenance site, which is neat and beautiful, saving a lot of maintenance space and improving maintenance efficiency.

[0054] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should fall within the scope of the claims of the utility model.

Claims

1. A storage rack for wheel pins of nuclear power steam turbine generator sets, characterized in that: It comprises at least one frame (10), wherein the frame (10) has a first side surface and a second side surface opposite to each other; A first side surface of each of the frames (10) is provided with a plurality of first bearing parts (20) for bearing the wheel pin bolts (100) from top to bottom, each of the first bearing parts (20) is arranged with an opening facing upward, and each of the first bearing parts (20) is provided with a first protective pad (30); A plurality of second bearing parts (40) for bearing the wheel pin bolts (100) are provided on the second side surface of the frame body (10) from top to bottom, each of the second bearing parts (40) is opened upward, and each of the second bearing parts (40) is provided with a second protective pad (50); Support plates (60) for accommodating wheel nuts and / or pin sleeves are arranged at intervals from top to bottom in the frame body (10).

2. The nuclear power steam turbine generator set wheel pin storage rack according to claim 1, characterized in that: The first bearing parts (20) are distributed in a stepped manner from top to bottom; A plurality of the second bearing parts (40) are distributed in a stepped manner from top to bottom.

3. The nuclear power steam turbine generator set wheel pin storage rack according to claim 1, characterized in that: Each of the first bearing parts (20) comprises at least two first sub-bearing parts (21), and the at least two first sub-bearing parts (21) are arranged at intervals in the horizontal direction.

4. The nuclear power steam turbine generator set wheel pin storage rack according to claim 3, characterized in that: Each of the second bearing parts (40) comprises at least two second sub-bearing parts (41), and the at least two second sub-bearing parts (41) are arranged at intervals in the horizontal direction.

5. The nuclear power steam turbine generator set wheel pin storage rack according to claim 4, characterized in that: The first sub-bearing portion (21) is arc-shaped; The second sub-bearing portion (41) is arc-shaped.

6. The nuclear power steam turbine generator set wheel pin storage rack according to claim 1, characterized in that: A receiving space is formed on the support plate (60); The frame (10) has a third side surface and a fourth side surface that are opposite to each other; the third side surface and / or the fourth side surface is provided with an inlet and outlet (11), and the inlet and outlet (11) is connected to the accommodating space.

7. The nuclear power steam turbine generator set wheel pin storage rack according to claim 1, characterized in that: The support plate (60) is provided with a protective piece.

8. The nuclear power steam turbine generator set wheel pin storage rack according to claim 1, characterized in that: The first protection pad (30) and the second protection pad (50) are both nylon pads.

9. The nuclear power steam turbine generator set wheel pin storage rack according to claim 1, characterized in that: The frame (10) is provided with a lifting lug (12).

10. The nuclear power steam turbine generator set wheel pin storage rack according to any one of claims 1 to 9, characterized in that: The number of the frames (10) is two, the two frames (10) are arranged at intervals in the horizontal direction, and the two frames (10) are connected and fixed via a connecting beam (13).

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