Nuclear power plant steam turbine carrier ring support

Abstract

The utility model discloses a nuclear power plant steam turbine holding ring support which comprises an inner supporting frame and an outer supporting frame, the inner supporting frame is arranged inside the outer supporting frame, the inner supporting frame comprises an inner supporting frame body and a supporting assembly for holding a holding ring, and the supporting assembly is fixedly connected with the inner supporting frame body; the outer supporting frame comprises an outer supporting frame body and a locking assembly detachably connected with the holding ring, and the locking assembly is connected with the outer supporting frame body. Through cooperation of the outer supporting frame and the inner supporting frame, the holding ring is directly placed on the nuclear power plant steam turbine holding ring support after being lifted out of a steam turbine, for example, a supporting assembly and / or a locking assembly, the holding ring is stored in an upright mode, the holding ring can be prevented from turning over and high-risk operation can be avoided, and site occupation and overhaul time during overhaul are saved.

Description

Technical Field

[0001] This utility model relates to the field of nuclear power plant turbine maintenance technology, and in particular to a nuclear power plant turbine retaining ring support. Background Technology

[0002] The low-pressure cylinder retainer ring is a key component of the steam turbine, forming the turbine's flow passage along with the turbine rotor. High-temperature steam flows through it, driving the turbine to generate electricity. The low-pressure cylinder retainer ring is relatively heavy (approximately 8 tons), large in size (approximately 5.3 meters in diameter), and has an irregular external shape. It consists of an upper and lower retainer ring that interlock to form a circular outer ring. When removing the retainer ring for maintenance, its semi-circular shape prevents it from being stored upright after removal from the turbine. It must be rotated 90° and laid flat on the ground, occupying a significant area and affecting the placement of other equipment during maintenance. These operations require the simultaneous operation of both crane hooks, one raising and the other lowering, demanding a high degree of coordination. Even slight mishaps can easily lead to the retainer ring tipping over, posing a significant industrial safety risk. Meanwhile, the aforementioned hoisting work occupied the main crane for an extended period, affecting the use of the crane by other work during the nuclear power plant's overhaul and prolonging the overhaul period. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a turbine retaining ring support for nuclear power plants.

[0004] The technical solution adopted by this utility model to solve its technical problem is: a turbine ring support for a nuclear power plant, including an inner support frame and an outer support frame, wherein the inner support frame is disposed inside the outer support frame;

[0005] The inner support frame includes an inner support frame body and a support assembly for placing the holding ring, and the support assembly is fixedly connected to the inner support frame body;

[0006] The outer support frame includes an outer support frame body and a locking assembly detachably connected to the retaining ring, the locking assembly being connected to the outer support frame body.

[0007] In some embodiments, the locking assembly includes a plurality of locking members that are detachably locked to the body of the retaining ring, each of the locking members being connected to the body of the outer support frame;

[0008] The support assembly includes four inner pillars that abut against the protrusions of the holding ring. Each inner pillar is fixedly connected to the main body of the inner support frame. The four inner pillars are symmetrically distributed on opposite sides of the width direction of the inner support frame, and the heights of the two inner pillars on the same side are different from those of the two inner pillars on the other side.

[0009] In some embodiments, the locking assembly includes a plurality of locking members that are detachably locked to the body of the retaining ring, each of the locking members being connected to the body of the outer support frame;

[0010] The support assembly includes a support platform for the bottom of the holding ring to abut against and two inner pillars for the protrusions of the holding ring to abut against. The support platform is fixedly connected to the main body of the inner support frame, and each inner pillar is fixedly connected to the main body of the inner support frame. The support platform and the two inner pillars are distributed on opposite sides of the width direction of the inner support frame, and the heights of the support platform and the two inner pillars are different.

[0011] In some embodiments, the locking assembly includes a plurality of locking members detachably lockable to the body of the retaining ring and at least two outer pillars for connecting to the lugs of the retaining ring, each of the locking members being connected to the body of the outer support frame; the two outer pillars are arranged opposite to each other, and each outer pillar is respectively connected to the body of the outer support frame;

[0012] The support assembly includes at least two inner pillars that abut against the protrusions of the retaining ring, each inner pillar being fixedly connected to the main body of the inner support frame.

[0013] In some embodiments, the outer support frame body includes at least four columns and several outer crossbeams, with the at least four columns symmetrically distributed on opposite sides of the width direction of the outer support frame body, and the inner support frame disposed between the at least four columns;

[0014] Each of the outer crossbeams is connected to at least two columns, and / or each of the outer crossbeams is connected to both a column and an outer support column;

[0015] The locking element is connected to the column.

[0016] In some embodiments, the outer support frame body further includes a plurality of auxiliary supports, each of which is located on the outside of the column and is connected to the column and / or the outer crossbeam to form a triangular support structure.

[0017] In some embodiments, the auxiliary support is rotatably connected to the column and / or the outer crossbeam.

[0018] In some embodiments, each of the columns is provided with a screw hole, and the locking member is screwed to the body of the retaining ring through the screw hole.

[0019] In some embodiments, the inner support frame body includes a plurality of bottom beams, a plurality of inner cross beams and a plurality of diagonal braces, and two inner support columns are connected to at least one of the bottom beams and / or the support platform is connected to at least one of the bottom beams; each inner cross beam is connected to two inner support columns respectively, and each diagonal brace is connected to the bottom beam and to the inner support column or the inner cross beam.

[0020] In some embodiments, the outer support frame body includes two bases, at least four columns and several outer crossbeams, with the at least four columns symmetrically distributed on opposite sides of the width direction of the outer support frame body;

[0021] Each of the outer crossbeams is connected to at least two columns, and / or each of the outer crossbeams is connected to both a column and the foundation.

[0022] In some embodiments, the inner support frame further includes a plurality of first positioning members, which are respectively connected to the inner support frame body and extend out of the inner support frame body;

[0023] The outer support frame also includes a plurality of second positioning elements, which are connected to the main body of the outer support frame and are positioned toward the inner support frame.

[0024] The first positioning component is positioned by docking with the second positioning component.

[0025] In some embodiments, the outer support frame body further includes a protective layer disposed on the inner side of the outer support frame body.

[0026] By implementing this utility model, the following beneficial effects can be achieved:

[0027] This utility model discloses a turbine ring holder for nuclear power plants. The turbine ring holder includes an inner support frame and an outer support frame. The inner support frame is disposed inside the outer support frame and includes a main body and a support assembly for placing the ring. The support assembly is fixedly connected to the main body. The outer support frame includes a main body and a locking assembly detachably connected to the ring. The locking assembly is connected to the main body. Through the cooperation of the outer and inner support frames, the ring can be directly placed on the turbine ring holder after being lifted from the turbine, for example, on the support assembly and / or the locking assembly. The ring remains upright, avoiding high-risk operations involving turning the ring over and saving space and time during major overhauls. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0029] Figure 1This is a schematic diagram of the structure of the turbine bearing ring support for a nuclear power plant according to Embodiment 1 of this utility model;

[0030] Figure 2 yes Figure 1 A front view of the outer support frame in the middle;

[0031] Figure 3 yes Figure 1 Side view of the outer support frame;

[0032] Figure 4 yes Figure 1 Top view of the outer support frame;

[0033] Figure 5 yes Figure 1 A front view of the inner support frame;

[0034] Figure 6 yes Figure 1 Side view of the inner support frame;

[0035] Figure 7 yes Figure 1 Top view of the internal support frame;

[0036] Figure 8 This is a schematic diagram showing the installation position of the support platform in Embodiment 2;

[0037] Figure 9 This is a schematic diagram showing the location of the external support column in Embodiment 3. Detailed Implementation

[0038] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0040] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0041] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or a chemical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] Example 1:

[0043] This utility model refers to the lower half of the turbine retaining ring, which has a semi-circular structure with the split surface facing upwards. The retaining ring includes a retaining ring body, four lugs, and four protrusions. The four lugs are located at different positions at the same height on the outside of the retaining ring body, close to the split surface, while the four protrusions are located at different positions at different heights on the lower part of the retaining ring body, away from the split surface.

[0044] Figure 1 This is a schematic diagram of the structure of the turbine bearing ring support for a nuclear power plant according to Embodiment 1 of this utility model. See also... Figure 1This utility model discloses a turbine holding ring support for a nuclear power plant, used to hold the turbine holding rings. The turbine holding ring support includes an outer support frame 200 and an inner support frame 100, with the inner support frame 100 disposed inside the outer support frame 200. The outer support frame 200 has an internal accommodating space for accommodating the inner support frame 100 and part of the holding rings. The inner support frame 100 can be directly placed inside the outer support frame 200 during use without needing to be fixed to it; the relative positions of the inner support frame 100 and the outer support frame 200 can be adjusted according to the requirements of the holding ring structure. Alternatively, to avoid adjusting the relative positions of the inner support frame 100 and the outer support frame 200 before each use, a positioning structure corresponding to the outer support frame 200 is provided at the bottom of the inner support frame 100 for quick positioning. For example, the inner support frame 100 also includes several first positioning elements 3, which are respectively connected to the inner support frame body 1 and extend outside the inner support frame body 1. The outer support frame 200 also includes several second positioning elements 6, which are connected to the outer support frame body 4 and oriented towards the inner support frame 100. The first positioning element 3 and the second positioning element 6 are positioned by mating. Specifically, the first positioning element 3 can be a connecting plate, and the second positioning element 6 can be a positioning protrusion, such as a bolt, to achieve the positioning and fixing of the inner support frame 100 and the outer support frame 200. Alternatively, the inner support frame 100 and the outer support frame 200 can be designed as a non-removable structure. For illustrative purposes, Figure 1 The inner support frame size of 100 is not the actual size.

[0045] The inner support frame 100 includes an inner support frame body 1 and a support assembly 2 for placing the holding ring, the support assembly 2 being fixedly connected to the inner support frame body 1. The outer support frame 200 includes an outer support frame body 4 and a locking assembly detachably connected to the holding ring, the locking assembly being connected to the outer support frame body 4. The support assembly 2 is used to bear the overall weight of the holding ring and to maintain the stable placement of the holding ring, i.e., to restrict the longitudinal movement of the holding ring. The locking assembly can be connected to the main body of the holding ring to restrict the lateral movement of the holding ring. The locking assembly can be a rope, chain, rod, or other similar structure.

[0046] Figures 2 to 4 They are Figure 1 The front, side, and top views of the outer support frame are shown. See also... Figures 2 to 4 The locking assembly includes several locking elements 51 that are detachably locked to the main body of the retaining ring, and each locking element 51 is connected to the outer support frame main body 4.

[0047] In some embodiments, the outer support frame body 4 includes at least four uprights 41 and a plurality of outer crossbeams 42. The at least four uprights 41 are symmetrically distributed on opposite sides of the width direction of the outer support frame body 4, and the inner support frame 100 is disposed between the at least four uprights 41. A locking member 51 is connected to the uprights 41. Each upright 41 has a through hole 45 and is connected to the main body of the retaining ring via the locking member 51 for limiting its position. For example, each upright 41 has a screw hole, and the locking member 51 is screwed to the main body of the retaining ring through the screw hole, which can prevent the retaining ring from moving laterally. Each outer crossbeam 42 is connected to at least two uprights 41. The at least four uprights 41 are parallel to each other, and multiple outer crossbeams 42 may exist, such as four, six, or eight. Each outer crossbeam 42 is fixedly connected to two adjacent uprights 41 to form a stable foundation frame.

[0048] In some embodiments, the top view of at least four columns 41 and several outer beams 42 is a trapezoidal structure, with an internal accommodating space for accommodating the inner support frame 100 and part of the holding ring. The trapezoidal shape can adapt to the external structure of the holding ring and avoid the structure of the holding ring portion.

[0049] In some embodiments, the outer support frame body 4 further includes several auxiliary supports 43, each auxiliary support 43 being located on the outer side of the column 41 and connected to the column 41 and / or the outer crossbeam 42 to form a triangular support structure. The auxiliary supports 43 are used to enhance overall stability and prevent overturning. In this invention, the outer side of the column 41 refers to the side of the column 41 that is away from the inner support frame 100 in the width direction of the outer support frame body 4. Understandably, the auxiliary support 43 can be a leg, with one end connected to the column 41 or the outer crossbeam 42 and the other end supported on the ground. Alternatively, the auxiliary support 43 can be a triangular structural component or a triangular plate, sharing two or more connection points with the column 41 and / or the outer crossbeam 42. For example, one side of the auxiliary support 43 can be connected to the column 41 alone, connected to multiple outer crossbeams 42, or connected to both the column 41 and the outer crossbeam 42 respectively, etc., with various connection methods as long as the supporting function is satisfied.

[0050] In some embodiments, the auxiliary support 43 is rotatably connected to the column 41 and / or the outer crossbeam 42. This can save the overall floor space of the turbine holding ring support in nuclear power plants. When not in use, the auxiliary support 43 can be folded up and unfolded when needed. Referring to the connection methods of the auxiliary support 43 described above, the auxiliary support 43 can be rotatably connected to the column 41, rotatably connected to the outer crossbeam 42, or rotatably connected to both the column 41 and the outer crossbeam 42, which will not be elaborated here. There are many ways to achieve this rotatable connection, such as hinge connection, linkage connection, etc. Furthermore, to achieve the corresponding connection, corresponding connection structures can be provided on the auxiliary support 43, the column 41, and the outer crossbeam 42; these are all existing technologies and will not be elaborated here.

[0051] In some embodiments, the outer support frame body 4 further includes a protective layer 52, which is disposed on the inner side of the outer support frame body 4. The protective layer 52 can prevent damage to the outer support frame body 4 due to collisions caused by unstable center of gravity during hoisting. The inner side of the outer support frame body 4 refers to the side of the outer support frame body 4 facing the inner support frame 100. The protective layer 52 can be made of relatively soft materials such as soft aluminum plate, rubber block, or cloth block, and is fixed to the outer crossbeam 42 or column 41 by adhesive, fasteners, or binding ropes. The protective layer 52 is not shown in the figure.

[0052] Figures 5 to 7 They are Figure 1 The front, side, and top views of the internal support frame are shown. See also... Figures 5 to 7 The support assembly 2 includes four inner pillars 21 that abut against the protrusions of the holding ring. Each inner pillar 21 is fixedly connected to the inner support frame body 1. The four inner pillars 21 are symmetrically distributed on opposite sides of the inner support frame 100 in the width direction, and the heights of the two inner pillars 21 on the same side are different from those of the two inner pillars 21 on the other side. The four inner pillars 21 are used to support the overall weight of the holding ring, and the four inner pillars 21 correspond to the positions of the four protrusions of the holding ring, with each protrusion located on the top of an inner pillar 21. The top of the inner pillar 21 can be flat.

[0053] In some embodiments, the inner support frame body 1 includes several bottom beams 11, several inner cross beams 12, and several diagonal braces 13. Each inner support column 21 is connected to at least one bottom beam 11, and each inner cross beam 12 is connected to two inner support columns 21 respectively. Each diagonal brace 13 is connected to a bottom beam 11 and to either an inner support column 21 or an inner cross beam 12. The bottom beams 11, inner cross beams 12, and diagonal braces 13 work together to support the inner support column 21, maintaining its stability. There are various connection methods for the bottom beams 11, inner cross beams 12, and diagonal braces 13, and the appropriate number of bottom beams 11, inner cross beams 12, and diagonal braces 13 can be selected according to the different connection methods. For example, there can be four bottom beams 11, forming a square. There can also be four inner cross beams 12, forming a square together with the inner support columns 21. There can also be four diagonal braces 13, each diagonal brace 13 connecting one bottom beam 11 and one inner support column 41, or each diagonal brace 13 connecting one bottom beam 11 and one inner cross beam 12. Generally, the diagonal brace 13 forms a triangular support structure with the bottom beam 11 and the inner column 41, and the diagonal brace 13 forms a triangular support structure with the bottom beam 11 and the inner crossbeam 12, respectively, to enhance stability.

[0054] When the holding ring needs to be placed, it can be lifted out of the turbine by a crane and placed directly on the corresponding position of the nuclear power plant turbine holding ring bracket of this utility model. Each protrusion is placed on the top of an inner support column 21, and then the holding ring body is locked to the outer support frame body 4 by a locking structure, such as a rope, chain, or rod.

[0055] Example 2:

[0056] Embodiment 2 of this utility model discloses a turbine holding ring support for a nuclear power plant, used to hold the turbine holding ring. The turbine holding ring support includes an outer support frame 200 and an inner support frame 100, with the inner support frame 100 located inside the outer support frame 200. The outer support frame 200 has an internal accommodating space for accommodating the inner support frame 100 and part of the holding ring. The inner support frame 100 can be directly placed inside the outer support frame 200 during use without needing to be fixed to it; the relative positions of the inner support frame 100 and the outer support frame 200 can be adjusted according to the requirements of the holding ring structure. Alternatively, to avoid adjusting the relative positions of the inner support frame 100 and the outer support frame 200 before each use, corresponding positioning structures can be provided at the bottom of the inner support frame 100 and the outer support frame 200 for quick positioning. The inner support frame 100 and the outer support frame 200 can also be connected together via a connecting plate. Alternatively, the inner support frame 100 and the outer support frame 200 can be designed as a non-removable structure.

[0057] The inner support frame 100 includes an inner support frame body 1 and a support assembly 2 for placing the holding ring, the support assembly 2 being fixedly connected to the inner support frame body 1. The outer support frame 200 includes an outer support frame body 4 and a locking assembly detachably connected to the holding ring, the locking assembly being connected to the outer support frame body 4. The support assembly 2 is used to bear the overall weight of the holding ring and to maintain the stable placement of the holding ring, i.e., to restrict the longitudinal movement of the holding ring. The locking assembly can be connected to the main body of the holding ring to restrict the lateral movement of the holding ring.

[0058] Figure 8 This is a schematic diagram showing the location of the support platform. For example... Figure 8 As shown, this embodiment differs from Embodiment 1 in that the support component 2 in this embodiment includes a support platform where the bottom of the supporting ring abuts, and two inner support columns 21 where the protrusions of the supporting ring abut. The support platform is fixedly connected to the inner support frame body 1, and each inner support column 21 is fixedly connected to the inner support frame body 1. The support platform and the two inner support columns 21 are distributed on opposite sides of the width direction of the inner support frame 100, and the heights of the support platform and the two inner support columns 21 are different. The top surface of the support platform and the top of the inner support column 21 are both planar. The specific structural diagram of the support platform is not shown in detail, but... Figure 8 The diagram shows the installation location of the support platform, with A representing the location where the support platform is set.

[0059] In some embodiments, the inner support frame body 1 includes a plurality of bottom beams 11, a plurality of inner cross beams 12, and a plurality of diagonal braces 13. At least one bottom beam 11 is connected to each of the two inner pillars 21, and the support platform is connected to at least one bottom beam 11. Each inner cross beam 12 is connected to two inner pillars 21 respectively, and each diagonal brace 13 is connected to the bottom beam 11 and to either the inner pillar 21 or the inner cross beam 12. The bottom beams 11, inner cross beams 12, and diagonal braces 13 work together to support the inner pillar 21, maintaining its stability. There are various connection methods for the bottom beams 11, inner cross beams 12, and diagonal braces 13, and the appropriate number of bottom beams 11, inner cross beams 12, and diagonal braces 13 can be selected according to the different connection methods. For example, there can be four bottom beams 11, forming a square or trapezoid. There can be four inner cross beams 12, which, together with the inner pillars 21 and the support platform, form a trapezoid. The diagonal braces 13 can also be four in number, each connecting a base beam 11 and an inner column 41, or each connecting a base beam 11 and an inner crossbeam 12, or each connecting a base beam 11 and a support platform. Generally, triangular support structures are formed between the diagonal braces 13 and the base beam 11 and the inner column 41, between the diagonal braces 13 and the base beam 11 and the inner crossbeam 12, and between the diagonal braces 13 and the base beam 11 and the support platform to enhance stability.

[0060] When the holding ring needs to be placed, it can be lifted out of the turbine by a crane and placed directly on the corresponding position of the nuclear power plant turbine holding ring bracket of this utility model. The two protrusions are placed on the top of the two inner pillars 21, and the lower bottom of the holding ring body abuts against the support platform. Then, the holding ring body is locked to the outer support frame body 4 by a locking structure, such as rope, chain, rod, etc.

[0061] The other structures in this embodiment are exactly the same as those in Embodiment 1, and will not be described again here.

[0062] Example 3:

[0063] Embodiment 2 of this utility model discloses a turbine holding ring support for a nuclear power plant, used to hold the turbine holding ring. The turbine holding ring support includes an outer support frame 200 and an inner support frame 100, with the inner support frame 100 located inside the outer support frame 200. The outer support frame 200 has an internal accommodating space for accommodating the inner support frame 100 and part of the holding ring. The inner support frame 100 can be directly placed inside the outer support frame 200 during use without needing to be fixed to it; the relative positions of the inner support frame 100 and the outer support frame 200 can be adjusted according to the requirements of the holding ring structure. Alternatively, to avoid adjusting the relative positions of the inner support frame 100 and the outer support frame 200 before each use, corresponding positioning structures can be provided at the bottom of the inner support frame 100 and the outer support frame 200 for quick positioning. The inner support frame 100 and the outer support frame 200 can also be connected together via a connecting plate. Alternatively, the inner support frame 100 and the outer support frame 200 can be designed as a non-removable structure.

[0064] The inner support frame 100 includes an inner support frame body 1 and a support assembly 2 for placing the holding ring, the support assembly 2 being fixedly connected to the inner support frame body 1. The outer support frame 200 includes an outer support frame body 4 and a locking assembly detachably connected to the holding ring, the locking assembly being connected to the outer support frame body 4. The support assembly 2 is used to bear the overall weight of the holding ring and to maintain the stable placement of the holding ring, i.e., to restrict the longitudinal movement of the holding ring. The locking assembly can be connected to the main body of the holding ring to restrict the lateral movement of the holding ring.

[0065] Figure 9 This is a schematic diagram showing the location of the external support pillars. For example... Figure 9 As shown, this embodiment differs from Embodiment 1 in that the support assembly 2 includes at least two inner support columns 21 that abut against the protrusions of the holding rings, each inner support column 21 being fixedly connected to the inner support frame body 1. The locking assembly includes several locking members 51 that are detachably locked to the body of the holding rings and at least two outer support columns connected to the lugs of the holding rings. Each locking member 51 is connected to the outer support frame body 4, and two outer support columns are arranged opposite to each other, each outer support column being connected to the outer support frame body 4. The outer support columns are detachable; after removing the outer support columns, it is completely identical to Embodiment 1. The specific structural details of the outer support columns are not shown in the diagram. Figure 9 The diagram shows the installation location of the external support column, with B representing the location where the external support column is installed.

[0066] At least two outer supports are detachably connected to the lugs of the holding ring, and at least two inner supports 21 are detachably connected to the lower protrusion of the holding ring for load-bearing. A locking member 51 is connected to the main body of the holding ring for limiting its position. The outer support frame body 4 provides support for the at least two outer supports, and the inner support frame body 1 provides support for the at least two inner supports 21. The at least two outer supports and the at least two inner supports 21 bear the overall weight of the holding ring and maintain its stable placement, i.e., restricting longitudinal movement. The outer support frame body 4 can be connected to the main body of the holding ring to restrict lateral movement.

[0067] Understandably, to ensure more stable placement of the holding ring, in this embodiment, there are four inner pillars 21. These four inner pillars 21 are symmetrically distributed on opposite sides of the inner support frame 100 in the width direction, and the heights of the two inner pillars 21 on one side are different from those of the two inner pillars 21 on the other side. Each of the four inner pillars 21 corresponds to one of the four protrusions of the holding ring, with each protrusion positioned on top of an inner pillar 21. Similarly, there are four outer pillars, symmetrically distributed on opposite sides of the outer support frame 200 in the length direction. These four outer pillars correspond to the four lugs of the holding ring, with each lug positioned on top of an outer pillar. The tops of both the inner and outer pillars can be planar.

[0068] When it is necessary to place the holding ring, the holding ring can be lifted out of the steam turbine by a crane and placed directly on the corresponding position of the nuclear power plant steam turbine holding ring bracket of this utility model. Each protrusion is placed on the top of an inner support column 21, and each lug is placed on the top of an outer support column. Then, the holding ring body and the outer support frame body 4 can be locked by locking components, such as ropes, chains, rods, etc.

[0069] In some embodiments, the outer support frame body 4 includes at least four uprights 41 and a plurality of outer crossbeams 42. The at least four uprights 41 are symmetrically distributed on opposite sides of the outer support frame body 4 in the width direction, and the inner support frame 100 is placed between the at least four uprights 41. Each upright 41 is provided with a through hole 45 and is connected to the main body of the holding ring by a fastener for limiting its position. For example, the connection to the holding ring body is achieved by bolts, which can prevent the holding ring from moving laterally.

[0070] Each outer crossbeam 42 is connected to at least two uprights 41, and / or each outer crossbeam 42 is connected to both an upright 41 and an outer support column. At least four uprights 41 are parallel to each other, and multiple outer crossbeams 42 may exist, such as four, six, or eight. Each outer crossbeam 42 is fixedly connected to two adjacent uprights 41, forming a stable framework for the foundation. Specifically, multiple outer crossbeams 42 may exist, such as two, four, or six. Each outer crossbeam 42 is either detachably or non-detachably fixedly connected to an upright 41 and an adjacent outer support column. Each outer support column is fixedly connected to an upright 41 via an outer crossbeam 42, which can be either detachable or non-detachable, thus securing the outer support column to the outer support frame body 4. For example, every two outer support columns are connected by two outer crossbeams 42, which are parallel to each other and perpendicular to the outer support columns.

[0071] In some embodiments, the top view of at least four columns 41, a plurality of outer beams 42, and at least two outer supports is a trapezoidal structure, with an internal accommodating space for accommodating the inner support frame 100 and part of the holding ring. The trapezoidal shape can adapt to the external structure of the holding ring and avoid the structure of the holding ring portion.

[0072] Understandably, the other structures of the turbine bearing support in nuclear power plants are exactly the same as in Embodiment 1, and will not be described in detail here.

[0073] Example 4:

[0074] See Figures 2 to 4 Embodiment 4 of this utility model discloses a turbine holding ring support for a nuclear power plant, used to hold the turbine holding ring. The turbine holding ring support includes an outer support frame 200 for accommodating the holding ring. The outer support frame 200 includes an outer support frame body 4 and a locking assembly detachably connected to the holding ring. The locking assembly is connected to the outer support frame body 4. The locking assembly can be connected to the main body of the holding ring to restrict the lateral movement of the holding ring.

[0075] The outer support frame body 4 includes two bases 44, at least four columns 41, and several outer crossbeams 42. The at least four columns 41 are symmetrically distributed on opposite sides of the outer support frame body 4 in the width direction. Each outer crossbeam 42 is connected to at least two columns 41, and / or, each outer crossbeam 42 is connected to both a column 41 and a base 44. The bases 44 are used to bear the overall weight of the holding ring and to maintain the stable placement of the holding ring, i.e., to restrict the longitudinal movement of the holding ring. The upper support surface of the base 44 can be a plane.

[0076] The difference between this embodiment and Embodiment 1 is that this embodiment does not require the inner support frame 100, which can be used to place the upper half of the holding ring. The upper half of the holding ring is semi-circular, with its split surface facing down when it is lifted out of the turbine. In this embodiment, the nuclear power plant turbine holding ring bracket only requires the outer support frame 200 and two flat support platforms 44. After the upper half of the holding ring is lifted out of the turbine, it is inserted vertically downward into the outer support frame 200. The split surface of the upper half of the holding ring rests on the support surface of the platform 44, thus placing it stably. Then, the upper half of the holding ring is locked to the outer support frame body 4 by locking components, such as ropes, chains, rods, etc.

[0077] Understandably, the other structures of the outer support frame 200 in this embodiment are the same as those in Embodiment 1, and will not be described in detail here.

[0078] By implementing this utility model, the following beneficial effects can be achieved:

[0079] The turbine ring holder of this utility model, through the cooperation of the outer support frame 200 and the inner support frame 100, allows the ring holder to be directly placed on the turbine ring holder after being lifted out of the turbine, such as on the support component 2 and / or the locking component. The ring holder is kept upright, which can avoid the risk of the ring holder turning over and save space and time during major overhauls.

[0080] 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, without departing from the concept of the present utility model, the above embodiments or technical features can be freely combined, and several modifications and improvements can be made. These all fall within the protection scope of the present utility model, that is, the embodiments described "in some embodiments" can be freely combined with any of the embodiments above and below. 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 turbine bearing ring support for a nuclear power plant, characterized in that, It includes an inner support frame (100) and an outer support frame (200), wherein the inner support frame (100) is disposed inside the outer support frame (200); The inner support frame (100) includes an inner support frame body (1) and a support assembly (2) for placing the holding ring, the support assembly (2) being fixedly connected to the inner support frame body (1); The outer support frame (200) includes an outer support frame body (4) and a locking assembly detachably connected to the holding ring, the locking assembly being connected to the outer support frame body (4).

2. The turbine bearing ring support for nuclear power plants according to claim 1, characterized in that, The locking assembly includes a plurality of locking elements (51) that are detachably locked to the main body of the retaining ring, and each locking element (51) is connected to the main body (4) of the outer support frame; The support assembly (2) includes four inner pillars (21) that abut against the protrusions of the holding ring. Each inner pillar (21) is fixedly connected to the inner support frame body (1). The four inner pillars (21) are symmetrically distributed on opposite sides of the width direction of the inner support frame (100), and the heights of the two inner pillars (21) on the same side are different from those of the two inner pillars (21) on the other side.

3. The turbine bearing ring support for nuclear power plants according to claim 1, characterized in that, The locking assembly includes a plurality of locking elements (51) that are detachably locked to the main body of the retaining ring, and each locking element (51) is connected to the main body (4) of the outer support frame; The support assembly (2) includes a support platform for the bottom of the holding ring to abut against and two inner pillars (21) for the protrusions of the holding ring to abut against. The support platform is fixedly connected to the inner support frame body (1), and each inner pillar (21) is fixedly connected to the inner support frame body (1). The support platform and the two inner pillars (21) are distributed on opposite sides of the width direction of the inner support frame (100), and the heights of the support platform and the two inner pillars (21) are different.

4. The turbine bearing ring support for nuclear power plants according to claim 1, characterized in that, The locking assembly includes several locking members (51) that are detachably locked to the main body of the holding ring and at least two outer pillars for connecting to the lugs of the holding ring. Each locking member (51) is connected to the main body (4) of the outer support frame. The two outer pillars are arranged opposite to each other, and each outer pillar is connected to the main body (4) of the outer support frame respectively. The support assembly (2) includes at least two inner pillars (21) for the protrusions of the retaining ring to abut against, each inner pillar (21) being fixedly connected to the inner support frame body (1).

5. The turbine bearing ring support for nuclear power plants according to claim 4, characterized in that, The outer support frame body (4) includes at least four columns (41) and several outer beams (42). The at least four columns (41) are symmetrically distributed on opposite sides of the width direction of the outer support frame body (4). The inner support frame (100) is arranged between the at least four columns (41). Each of the outer crossbeams (42) is connected to at least two columns (41), and / or each of the outer crossbeams (42) is connected to both the column (41) and the outer support. The locking member (51) is connected to the column (41).

6. The turbine bearing ring support for nuclear power plants according to claim 5, characterized in that, The outer support frame body (4) also includes several auxiliary supports (43), each of which is located on the outside of the column (41) and is connected to the column (41) and / or the outer crossbeam (42) to form a triangular support structure.

7. The turbine bearing ring support for nuclear power plants according to claim 6, characterized in that, The auxiliary support (43) is rotatably connected to the column (41) and / or the outer beam (42).

8. The turbine bearing ring support for nuclear power plants according to claim 5, characterized in that, Each of the columns (41) is provided with a screw hole, and the locking member (51) is screwed to the main body of the retaining ring through the screw hole.

9. The turbine bearing ring support for nuclear power plants according to claim 3, characterized in that, The main body (1) of the inner support frame includes several bottom beams (11), several inner cross beams (12) and several diagonal braces (13). Two inner support columns (21) are connected to at least one of the bottom beams (11) and / or the support platform is connected to at least one of the bottom beams (11). Each inner cross beam (12) is connected to two inner support columns (21) respectively, and each diagonal brace (13) is connected to the bottom beam (11) and to the inner support column (21) or the inner cross beam (12).

10. The turbine bearing ring support for nuclear power plants according to claim 1, characterized in that, The outer support frame body (4) includes two bases (44), at least four columns (41) and several outer beams (42), with at least four columns (41) symmetrically distributed on opposite sides of the width direction of the outer support frame body (4); Each of the outer crossbeams (42) is connected to at least two columns (41), and / or each of the outer crossbeams (42) is connected to both the column (41) and the pedestal (44).

11. The turbine bearing ring support for nuclear power plants according to any one of claims 2 to 4, characterized in that, The inner support frame (100) further includes a plurality of first positioning elements (3), which are respectively connected to the inner support frame body (1) and extend out of the inner support frame body (1); The outer support frame (200) also includes a plurality of second positioning elements (6), which are connected to the outer support frame body (4) and are positioned toward the inner support frame (100); The first positioning element (3) is docked and positioned with the second positioning element (6).

12. The turbine bearing ring support for nuclear power plants according to any one of claims 1 to 4, characterized in that, The outer support frame body (4) also includes a protective layer (52), which is located on the inner side of the outer support frame body (4).

Images