Turbine bolt placing support

Abstract

The utility model belongs to the technical field of steam turbine overhaul, and discloses a steam turbine bolt placing support which comprises a supporting assembly, a placing piece and a plurality of hanging pieces, and the supporting assembly comprises at least two layers of supporting frames arranged at intervals in the vertical direction; the placing piece is arranged on the supporting frame and comprises a plurality of containing grooves with upward openings, and the containing grooves are formed at intervals and extend in the horizontal direction; the hanging piece is arranged on the supporting frame and provided with a hanging part. When the steam turbine is overhauled, the bolts can be horizontally and orderly placed in the containing groove, the bolts are prevented from being stacked together to rub with one another and being contaminated by impurities, parts cannot be damaged, and then the overhaul period of the steam turbine cannot be affected; meanwhile, the hanging part can be used for hanging an eyebolt and a shackle, so that the cleanliness of a maintenance site is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine maintenance, in particular to a steam turbine bolt placement bracket. Background Art

[0002] Nuclear power steam turbines have low pressure, temperature and other parameters and high rated power, which makes the size of related parts of steam turbines much larger than that of general steam turbines. Therefore, the appearance and weight of cylinder bolts are gradually increasing, the processing accuracy requirements are getting higher and higher, and the number of assemblies is also increasing. Taking the coupling bolts of steam turbines as an example, there are 20 bolts for the high and low wheels and 130 wheel bolts between the three low-pressure cylinders. Every time the steam turbine is disassembled, the wheels on both sides need to be unfastened, and at least 52 wheel bolts need to be placed. At the same time, the bearings, partitions, coupling guards, steam inlet guide rings, long bolts, bearing box guards, etc. need to be hoisted during disassembly. At this time, various tools such as lifting eye bolts and shackles will be used.

[0003] During the installation and maintenance process, the wheel bolts, eye bolts and shackles are randomly stacked on the rubber. On the one hand, it will cause certain safety hazards to the movement of personnel and fail to meet the requirements of safety, health and environmental protection. On the other hand, it is easy to cause equipment to collide with each other or be contaminated by related impurities, resulting in equipment damage and affecting the overhaul period.

[0004] Therefore, in order to solve the above problems, the utility model proposes a steam turbine bolt placement bracket. Utility Model Content

[0005] The utility model aims to provide a steam turbine bolt placement bracket to solve the problem that tools such as wheel bolts, eye bolts and shackles are randomly placed during the steam turbine maintenance process.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A steam turbine bolt placement bracket, comprising:

[0008] A support assembly, comprising at least two layers of support frames spaced apart in a vertical direction;

[0009] A placement member is arranged on the support frame, and the placement member includes a plurality of accommodating grooves which are arranged at intervals and open upwards, and the accommodating grooves extend in a horizontal direction;

[0010] A plurality of hanging parts are arranged on the support frame, and the hanging parts have hanging parts.

[0011] The above-mentioned turbine bolt placement bracket, wherein the plurality of accommodating grooves are distributed into at least two rows, the accommodating grooves in each row are arranged at intervals along a first direction, and at least part of the accommodating grooves are arranged in a colinear manner along a second direction, and the first direction is perpendicular to the second direction.

[0012] The above-mentioned turbine bolt placement bracket, wherein the placement member includes a plurality of placement plates, the plurality of placement plates are arranged at intervals, and each of the placement plates is provided with one or more of the accommodating grooves.

[0013] The above-mentioned turbine bolt placement bracket, wherein the groove shape of the accommodating groove is arc-shaped, U-shaped or V-shaped.

[0014] The above-mentioned steam turbine bolt placement bracket, wherein the hanging member extends in a straight line, the bottom end of the hanging member is fixedly connected to the support frame, and the top end of the hanging member is located obliquely above the support frame to form the hanging part.

[0015] The above-mentioned turbine bolt placement bracket, wherein the support frame extends in the horizontal direction, and the inclination angle of the hanging member relative to the support frame is 30-60 degrees.

[0016] The above-mentioned turbine bolt placement bracket, wherein the support assembly also includes two side support members, the two side support members are arranged at an interval, one end of the support frame is connected to one of the side support members, and the other end of the support frame is connected to the other side support member.

[0017] The above-mentioned turbine bolt placement bracket, wherein the support assembly also includes a top connecting member, one end of the top connecting member is connected to the top end of one of the side supporting members, and the other end of the top connecting member is connected to the top end of another of the side supporting members.

[0018] The above-mentioned turbine bolt placement bracket, wherein the support frame includes a frame and a reinforcement, the frame encloses a accommodating space, the reinforcement is arranged in the accommodating space, one end of the reinforcement is connected to the first position of the frame, and the other end of the reinforcement is connected to the second position of the frame.

[0019] The above-mentioned steam turbine bolt placement bracket, wherein a buffer layer is arranged on the inner wall of the accommodating groove.

[0020] Beneficial effects of the utility model:

[0021] The utility model provides a steam turbine bolt placement bracket, and the support assembly plays a supporting role. The support assembly includes at least two layers of support frames arranged at intervals in the vertical direction, so as to make full use of the space in the vertical direction; a placement member is arranged on the support frame, and the placement member includes a plurality of accommodating grooves arranged at intervals and opening upward, and the accommodating grooves extend in the horizontal direction, so that the bolts required for the maintenance of the steam turbine can be placed horizontally and orderly, so as to avoid the bolts being stacked together, rubbing against each other and being contaminated by impurities, so that the parts will not be damaged, and thus the maintenance cycle of the steam turbine will not be affected; the hanging member has a hanging part, and the hanging part can hang tools such as eye bolts and shackles, so as to improve the space utilization rate of the bolt placement bracket and the cleanliness of the construction site. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a steam turbine bolt placement bracket provided by an embodiment of the utility model;

[0023] Figure 2 yes Figure 1 A magnified image of point A;

[0024] Figure 3 yes Figure 1 Enlarged view of point B.

[0025] In the figure:

[0026] 1. Support assembly; 11. Support frame; 12. Side support member; 13. Top connecting member; 111. Frame; 112. Reinforcement member; 2. Placement member; 21. Placement plate; 22. Receiving groove; 3. Hanging member. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, it can be a mechanical connection or an electrical connection, it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the description of the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0031] Nuclear power steam turbines have low pressure, temperature and other parameters and high rated power, which makes the size of related parts of steam turbines much larger than that of general steam turbines. Therefore, the appearance and weight of cylinder bolts are gradually increasing, the processing accuracy requirements are getting higher and higher, and the number of assemblies is also increasing. Taking the coupling bolts of steam turbines as an example, there are 20 bolts for the high and low wheels and 130 wheel bolts between the three low-pressure cylinders. Every time the steam turbine is disassembled, the wheels on both sides need to be unfastened, and at least 52 wheel bolts need to be placed. At the same time, the bearings, partitions, coupling guards, steam inlet guide rings, long bolts, bearing box guards, etc. need to be hoisted during disassembly. At this time, various tools such as lifting eye bolts and shackles will be used.

[0032] During the maintenance of the steam turbine, in order to avoid the friction between the wheel bolts, eye bolts and shackles and other tools stacked together and contaminated with impurities, to ensure the smooth progress of the steam turbine maintenance work, such as Figures 1 to 3 As shown, the utility model provides a steam turbine bolt placement bracket, which is used for horizontally and orderly placing bolts and hanging tools such as eyebolts and shackles.

[0033] See also Figure 1 The steam turbine bolt placement bracket includes a support assembly 1, a placement member 2 and a plurality of hanging members 3. The support assembly 1 plays a supporting role, and the support assembly 1 includes at least two layers of support frames 11 arranged at intervals in the vertical direction, which improves the space utilization in the vertical direction; the placement member 2 is used to place the bolts to avoid mutual wear when the bolts are stacked; the hanging member 3 is used to hang tools such as eyebolts and shackles, which is convenient for maintenance personnel to disassemble and assemble the steam turbine and improve the efficiency of steam turbine maintenance.

[0034] The support frame 11 can be provided with two layers, three layers or more than three layers. The support frame 11 can be used to place bolts, eyebolts and shackles. Optionally, the support frame 11 is arranged in the horizontal direction to ensure the support stability. From bottom to top, the area of ​​each layer of the support frame 11 gradually decreases, so that the structure is stable and avoids tipping. The shape of the support frame 11 can be a rectangle, specifically a rounded rectangle, and the edge transition of the rounded rectangle is smooth, which can effectively prevent the maintenance personnel from being stabbed during the maintenance of the steam turbine.

[0035] The support frame 11 may be a plate-like structure or a frame structure. Exemplarily, the support frame 11 includes a frame 111 and a reinforcement member 112. The frame 111 encloses a receiving space. The reinforcement member 112 is disposed in the receiving space. One end of the reinforcement member 112 is connected to a first position of the frame 111, and the other end of the reinforcement member 112 is connected to a second position of the frame 111. The reinforcement member 112 strengthens the frame 111, increases the structural strength, and can improve the bearing capacity of the frame 111.

[0036] In order to fix each layer of support frames 11, adjacent support frames 11 may be connected by a set of connecting members, or all support frames 11 may share a set of connecting members. In this embodiment, the support assembly 1 further includes two side support members 12, which are arranged at intervals, one end of the support frame 11 is connected to one side support member 12, and the other end of the support frame 11 is connected to the other side support member 12. This connection method requires fewer components and can simplify the structure.

[0037] The bottom support frame 11 can be located at the bottom of the side support member 12. When the turbine bolt placement bracket is placed on the ground, the bottom support frame 11 is in contact with the ground, increasing the contact area. The bottom support frame 11 can also be located above the bottom of the side support member 12. When the turbine bolt placement bracket is placed on the ground, the bottom of the side support member 12 is in contact with the ground, and the bottom support frame 11 is located above the ground, and a hanging member 3 can be set.

[0038] In order to further improve the stability, the two side support members 12 can be connected by setting a connecting piece, which can be that the tops of the two side support members 12 are fixedly connected by the connecting piece, or the middle positions of the two side support members 12 are fixedly connected by the connecting piece. In this embodiment, the support assembly 1 also includes a top connecting piece 13, one end of the top connecting piece 13 is connected to the top of one side support member 12, and the other end of the top connecting piece 13 is connected to the top of the other side support member 12. During the maintenance of the steam turbine, the top connecting piece 13 can be tied with a sling to facilitate the transfer of the steam turbine bolt placement bracket.

[0039] The side support member 12 may be a triangular frame structure or a quadrilateral frame structure. For example, the side support member 12 is a triangular frame structure, which has higher stability. The top connection member 13 may be a circular channel steel or a square channel steel. For example, the top connection member 13 is a circular hollow channel steel, which can reduce the mass, facilitate the transfer of the turbine bolt placement bracket, and prevent the staff from being stabbed.

[0040] like Figure 1 and Figure 2 As shown, the placement member 2 is used to place bolts, and the placement member 2 is arranged on the support frame 11. In this embodiment, the placement member 2 is arranged on the bottom support frame 11, and the bottom support frame 11 is in contact with the ground, so that the maintenance personnel can easily take and place the bolts during the maintenance of the steam turbine. Of course, the placement member 2 can also be arranged on other support frames 11. In this embodiment, the hanging member 3 is located on the support frame 11 above the placement member 2.

[0041] The placement member 2 includes a plurality of accommodating grooves 22 which are arranged at intervals and open upward, and the accommodating grooves 22 extend in a horizontal direction. The accommodating grooves 22 can horizontally and orderly accommodate the bolts required during the turbine maintenance process, preventing the bolts from being randomly stacked together, rubbing against each other, and being contaminated by impurities, thereby avoiding damage to components and not affecting the turbine maintenance period.

[0042] In order to provide the receiving groove 22, the placement member 2 may be in the shape of a plate, and the receiving groove 22 may be provided on the placement member 2. In this embodiment, the placement member 2 includes a plurality of placement plates 21, and the plurality of placement plates 21 are arranged at intervals, and each placement plate 21 is provided with one or more receiving grooves 22. During the maintenance of the steam turbine, if the receiving groove 22 is accidentally damaged, the placement plate 21 with the receiving groove 22 may be replaced to reduce the maintenance cost.

[0043] The accommodating grooves 22 are distributed in one row or multiple rows, and the accommodating grooves 22 in each row are arranged at intervals along a first direction. Figure 1 As shown by X in the figure. Multiple rows of accommodating grooves 22 can improve the space utilization of the steam turbine bolt placement bracket and place more bolts.

[0044] In principle, each receiving groove 22 accommodates a bolt, but the bolts are of different types and sizes. Some bolts can be placed stably in the receiving groove 22, but some bolts are longer and longer than the length of the receiving groove 22, so the bolts are prone to tilt, affecting the work of maintenance personnel. In order to solve this problem, multiple receiving grooves 22 are distributed in at least two rows, and at least some of the receiving grooves 22 are arranged in a collinear manner along the second direction. The second direction is as follows: Figure 1 As shown by Y in the figure, the first direction is perpendicular to the second direction. For bolts with a relatively long length, they can be overlapped in two co-linear receiving grooves 22 to provide them with multi-section support to maintain balance.

[0045] The groove shape of the receiving groove 22 can be arc-shaped, U-shaped or V-shaped to increase the contact area between the receiving groove 22 and the bolt, provide a more uniform supporting force for the bolt, and ensure that the bolt can be stably placed in the receiving groove 22.

[0046] Furthermore, in order to prevent the bolt and the receiving groove 22 from wearing each other, a buffer layer is provided on the inner wall of the receiving groove 22, which can ensure flexible contact between the bolt and the receiving groove 22 and reduce wear. Specifically, the material of the buffer layer can be rubber, rubber or polyurethane (PU), which is easy to obtain and easy to process, and can be well attached to the inner wall of the receiving groove 22.

[0047] When dismantling the steam turbine, it is necessary to hoist the bearing, partition, coupling shield, air intake guide pipe, bearing box shield, etc., and various tools such as eyebolts and shackles are used. These tools are difficult to place in the accommodating groove 22, so the support frame 11 is provided with a hanging member 3, such as Figure 1 and Figure 3 As shown, the hanging member 3 has a hanging portion for hanging tools such as eyebolts and shackles, which is convenient for maintenance workers to use. Various tools are stored on the hanging member 3, which improves the cleanliness of the maintenance site.

[0048] The hanging member 3 can extend in a straight line or in a curve. In this embodiment, the hanging member 3 extends in a straight line, the bottom end of the hanging member 3 is fixedly connected to the support frame 11, and the top end of the hanging member 3 is located obliquely above the support frame 11 to form a hanging portion. This is convenient for installation and can make the eyebolts and shackles on the hanging member 3 more stable. In other embodiments, the hanging member 3 extends along a curve to form a hanging portion, and the top end of the hanging member 3 is fixedly connected to the support frame 11.

[0049] The hanging member 3 can be a cylindrical short steel or a square short steel, which is convenient for material acquisition. For example, the hanging member 3 is a cylindrical short steel with a simple structure and convenient processing. It can effectively hang tools such as eyebolts and shackles, which is convenient for maintenance workers to take and place tools such as eyebolts and shackles during the maintenance of the steam turbine, thereby improving the maintenance efficiency of the steam turbine. The support frame 11 extends in the horizontal direction, and the inclination angle of the hanging member 3 relative to the support frame 11 is 30-60 degrees, such as 30 degrees, 35 degrees, 40 degrees, 45 degrees, 50 degrees, 55 degrees or 60 degrees. At this angle, maintenance personnel can more conveniently take and place tools such as eyebolts and shackles.

[0050] The surfaces of the support assembly 1, the placement piece 2 and the hanging piece 3 are all coated with an anti-rust layer, which can isolate the surfaces of the support assembly 1, the placement piece 2 and the hanging piece 3 from contact with the outside world, reduce corrosion and extend the service life. The anti-rust layer can be an anti-rust paint or an electroplating layer. In this embodiment, the anti-rust layer is an anti-rust paint, which can be conveniently sprayed on the surfaces of the support assembly 1, the placement piece 2 and the hanging piece 3 to prevent corrosion and rust.

[0051] The steam turbine bolt placement bracket is designed for storing bolts, eyebolts, shackles, etc. when overhauling steam turbine units. It can effectively protect various equipment, avoid collision damage or contamination of corresponding impurities, which will affect installation and use. It is safe, beautiful, and saves space.

[0052] During the dismantling process of the steam turbine, firstly, a sling is tied to the top connection piece 13, and the steam turbine bolt placement bracket is placed on site with the help of a crane. Secondly, the tools such as shackles and eyebolts that are needed are placed on the hanging piece 3 of the steam turbine bolt placement bracket. The maintenance personnel can conveniently take and place the above tools to dismantle the steam turbine. When the steam turbine is dismantled to the relevant step and the bolts are lifted out, they are placed in one or two receiving grooves 22 of the steam turbine bolt placement bracket according to the length of the bolts.

[0053] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A steam turbine bolt placement bracket, characterized in that: include: A support assembly (1) comprises at least two layers of support frames (11) arranged at intervals in a vertical direction; A placement member (2) is arranged on the support frame (11), the placement member (2) comprises a plurality of accommodating grooves (22) which are arranged at intervals and open upward, and the accommodating grooves (22) extend in a horizontal direction; A plurality of hanging parts (3) are arranged on the support frame (11), and the hanging parts (3) have hanging parts.

2. The steam turbine bolt placement bracket according to claim 1, characterized in that: The plurality of accommodating grooves (22) are distributed in at least two rows, the accommodating grooves (22) in each row are arranged at intervals along a first direction, and at least some of the accommodating grooves (22) are arranged in a collinear manner along a second direction, and the first direction is perpendicular to the second direction.

3. The steam turbine bolt placement bracket according to claim 1, characterized in that: The placement member (2) comprises a plurality of placement plates (21), the plurality of placement plates (21) are arranged at intervals, and each of the placement plates (21) is provided with one or more accommodating grooves (22).

4. The steam turbine bolt placement bracket according to claim 1, characterized in that: The groove shape of the accommodating groove (22) is arc-shaped, U-shaped or V-shaped.

5. The steam turbine bolt placement bracket according to claim 1, characterized in that: The hanging member (3) extends in a straight line, the bottom end of the hanging member (3) is fixedly connected to the support frame (11), and the top end of the hanging member (3) is located obliquely above the support frame (11) to form the hanging portion.

6. The steam turbine bolt placement bracket according to claim 5, characterized in that: The support frame (11) extends in a horizontal direction, and the hanging member (3) has an inclination angle of 30-60 degrees relative to the support frame (11).

7. The steam turbine bolt placement bracket according to claim 1, characterized in that: The support assembly (1) further comprises two side support members (12), the two side support members (12) being arranged at an interval, one end of the support frame (11) being connected to one side support member (12), and the other end of the support frame (11) being connected to the other side support member (12).

8. The steam turbine bolt placement bracket according to claim 7, characterized in that: The support assembly (1) further comprises a top connecting member (13), one end of the top connecting member (13) being connected to the top end of one of the side supporting members (12), and the other end of the top connecting member (13) being connected to the top end of another of the side supporting members (12).

9. The steam turbine bolt placement bracket according to claim 1, characterized in that: The support frame (11) comprises a frame (111) and a reinforcement member (112); the frame (111) encloses a receiving space; the reinforcement member (112) is arranged in the receiving space; one end of the reinforcement member (112) is connected to a first position of the frame (111); and the other end of the reinforcement member (112) is connected to a second position of the frame (111).

10. The steam turbine bolt placement bracket according to any one of claims 1 to 9, characterized in that: A buffer layer is provided on the inner wall of the accommodating groove (22).

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