Nuclear power plant maintenance pipeline vertical hoisting fixing device

Abstract

The utility model relates to a nuclear power plant maintenance pipeline vertical hoisting fixing device which comprises a pipe sleeve, a locking piece and a hoisting piece, and the pipe sleeve is provided with a first end and a second end which are arranged in the axial direction of the pipe sleeve in a deviating mode; the pipe sleeve is provided with a limiting cavity, and the first end is provided with an avoiding hole communicating with the limiting cavity. The second end is provided with a mounting ring hole for accommodating the end part of the pipeline; the mounting ring hole is arranged around the axis of the pipe sleeve; the locking piece is arranged on the peripheral wall of the pipe sleeve in a penetrating manner and is inserted into the mounting ring hole; the locking piece is used for abutting against the outer wall surface of the pipeline in the mounting ring hole so as to clamp the pipeline; the hoisting piece is rotationally arranged in the limiting cavity; the hoisting piece is axially limited in the limiting cavity; one end of the lifting piece extends out of the first end from the avoiding hole so as to be used for being connected with external lifting equipment. The pipeline can be conveniently lifted to the vertical state, operation is easy, safety risks are reduced, working time is shortened, and working efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of nuclear power plant maintenance technology, and in particular to a vertical lifting and fixing device for maintenance pipelines in nuclear power plants. Background Technology

[0002] Piping is a significant part of the maintenance and equipment installation work at nuclear power plants. This includes vertical pipe installation in GB corridor fire protection renovations, piping for seawater pump rooms (SEC system), piping for the nuclear island air conditioning system (DEG system), long-distance transmission of domestic water for nuclear power plants, and numerous water, oil, and gas supply routes. Most pipes are made of metal, are large and heavy, and often require cranes for lifting during construction. Piping installation methods vary depending on the scenario; in most cases, pipes are installed horizontally, such as for indoor water and gas connections, while sometimes vertical installation is necessary, such as connections between high-rise buildings and underground structures.

[0003] Pipeline lifting is a high-risk task that demands a high level of skill from operators. Workers must possess extensive experience in securing the pipe to the hook and continuously monitor the pipe's condition during the lifting process to ensure timely connection. Currently, there are two methods for securing the pipe to the hook: horizontal installation and vertical installation.

[0004] In related technologies, the lifting method used for vertical installations involves passing a long cable through the middle of the pipe, connecting the ends, and then lifting it into place using the cable. This method requires external force to keep the pipe vertical and stable during installation, and then the cable is slowly untied for vertical connection. This method carries safety risks and is inefficient. Utility Model Content

[0005] This application provides a vertical lifting and fixing device for maintenance pipelines in nuclear power plants to reduce safety risks, shorten operation time, and improve work efficiency.

[0006] This application provides a vertical lifting and fixing device for maintenance pipelines in nuclear power plants, including:

[0007] A sleeve has a first end and a second end that are disposed opposite to each other along the axial direction of the sleeve; the sleeve is provided with a limiting cavity, and the first end is provided with a clearance hole communicating with the limiting cavity; the second end is provided with a mounting ring hole for accommodating the end of a pipe; the mounting ring hole is arranged around the axis of the sleeve.

[0008] A locking element is inserted through the peripheral wall of the sleeve and into the mounting ring hole; the locking element is used to abut against the outer wall surface of the pipe inside the mounting ring hole to clamp the pipe.

[0009] The lifting component is rotatably disposed within the limiting cavity; the lifting component is axially limited within the limiting cavity; one end of the lifting component extends from the clearance hole to the outside of the first end for connecting to external lifting equipment.

[0010] Furthermore, the lifting component includes:

[0011] The limiting part is rotatably disposed within the limiting cavity, and the wall of the limiting cavity axially limits the limiting part.

[0012] A lifting part is connected to the end of the limiting part near the first end; the lifting part extends out of the clearance hole to the outside of the first end, and the lifting part is provided with a lifting hole; the lifting hole is used to connect external lifting equipment.

[0013] Furthermore, the sleeve is cylindrical; the radial section of the limiting cavity is a circular hole; the axis of the mounting ring hole, the axis of the limiting cavity, and the axis of the sleeve coincide; the lifting part extends along the axial direction of the limiting cavity, and the center of the lifting hole is located on the axis of the limiting cavity.

[0014] Furthermore, the limiting cavity extends through the second end along the axial direction of the sleeve; the diameter of the limiting cavity gradually decreases from the second end to the first end; the peripheral wall shape of the limiting part is adapted to the hole wall shape of the limiting cavity.

[0015] Furthermore, it also includes rollers, and the peripheral wall of the limiting part is provided with an assembly ring groove. The rollers are disposed in the assembly ring groove so as to be rotatably sleeved on the limiting part.

[0016] Furthermore, there are multiple assembly ring grooves, which are spaced apart along the axial direction of the limiting portion; each assembly ring groove contains one roller.

[0017] Furthermore, it also includes a ball bearing, which is rotatably disposed between the roller and the groove wall of the assembly ring groove, and the ball bearing abuts against the end of the roller facing the second end.

[0018] Furthermore, the groove wall of the assembly ring groove and / or the roller are provided with rolling grooves, and the ball is rotatably disposed in the rolling grooves.

[0019] Furthermore, the peripheral wall of the sleeve is provided with a plurality of threaded holes along the circumferential direction, and the plurality of threaded holes are symmetrically distributed about the axis of the sleeve.

[0020] The locking member is provided with an external thread, the locking member passes through the threaded hole, and is threadedly connected to the sleeve through the external thread.

[0021] Furthermore, the depth direction of the mounting ring hole is parallel to the axial direction of the sleeve; the peripheral wall of the sleeve is provided with at least two threaded holes spaced apart along the depth direction of the mounting ring hole.

[0022] The technical solution provided in this application has the following advantages compared with the prior art:

[0023] In the technical solution of this application, the mounting ring hole is used to accommodate the end of the pipe to be vertically lifted. The mounting ring hole provides an installation position and a positioning position for the pipe, so as to realize the quick positioning and assembly of the pipe end and the pipe sleeve. Then, the pipe and the pipe sleeve are locked and fixed by a locking device, so that the pipe can be firmly connected to the pipe sleeve during the lifting process. After the locking device is completed, an external lifting device is connected to the lifting device. The external lifting device applies a force to the lifting device, and the lifting device transmits the force to the pipe sleeve, and then to the pipe, so as to lift one end of the pipe. The force-bearing point of the lifting device is located on one side of the first end, and the mounting ring hole is located at the second end. The first end and the second end are respectively the two ends of the pipe sleeve along its axial direction. In this way, the pipe can be easily lifted to a vertical position, the operation is simple, the safety risks are reduced, the working time is reduced, and the work efficiency is improved. Meanwhile, the limiting cavity plays an axial limiting role for the lifting component, preventing it from detaching from the pipe sleeve and improving the stability and safety of the lifting process. The lifting component rotates within the limiting cavity. After vertical lifting is completed, when the pipe needs to be threaded, the pipe is stably connected to the pipe sleeve due to the rotating connection between the lifting component and the pipe sleeve. The pipe can be easily rotated, making pipe connection simple, easy to achieve, and highly efficient. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0027] Figure 1 This is a cross-sectional schematic diagram of a vertical lifting and fixing device for maintenance pipelines in a nuclear power plant, provided as an embodiment of this application.

[0028] Explanation of reference numerals in the attached figures:

[0029] Sleeve 1, first end 1A, second end 1B, limiting cavity 11, clearance hole 12, mounting ring hole 13.

[0030] Locking component 2, screw 21, bolt head 22,

[0031] Lifting component 3, limiting part 31, assembly ring groove 311, roller 312, ball 313, lifting part 32, lifting hole 321. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0034] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0035] To address the problems of excessive tools, low efficiency, and safety risks in existing technologies for lifting pipelines during nuclear power plant maintenance, this application provides a vertical lifting and fixing device for nuclear power plant maintenance pipelines. This device avoids the use of ropes and pipe tying, reduces the number of tools used, increases fixing strength, provides safety assurance for operators, reduces operation time, and improves work efficiency.

[0036] Figure 1 This application provides a vertical lifting and fixing device for nuclear power plant maintenance pipelines, which is used in the vertical lifting operation of pipelines during the installation of maintenance equipment in nuclear power plants.

[0037] In the technical solution of this application embodiment, the vertical lifting and fixing device for maintenance pipelines in nuclear power plants includes a pipe sleeve 1, a locking member 2, and a lifting member 3. The pipe sleeve 1 has a first end 1A and a second end 1B that are arranged opposite to each other along the axial direction of the pipe sleeve 1. The pipe sleeve 1 is provided with a limiting cavity 11, and the first end 1A is provided with a clearance hole 12 communicating with the limiting cavity 11. The second end 1B is provided with a mounting ring hole 13 for accommodating the end of the pipeline. The mounting ring hole 13 is arranged around the axis of the pipe sleeve 1. The locking member 2 passes through the peripheral wall of the pipe sleeve 1 and is inserted into the mounting ring hole 13. The locking member 2 is used to abut against the outer wall surface of the pipeline in the mounting ring hole 13 to clamp the pipeline. The lifting member 3 is rotatably disposed in the limiting cavity 11. The lifting member 3 is axially limited in the limiting cavity 11. One end of the lifting member 3 extends from the clearance hole 12 to the outside of the first end 1A for connecting external lifting equipment.

[0038] Understandably, the mounting annular hole 13 is used to accommodate the end of the pipe to be vertically lifted. The mounting annular hole 13 provides an installation and positioning position for the pipe, enabling rapid positioning and assembly of the pipe end with the sleeve 1. The pipe is then locked and fixed to the sleeve 1 by the locking member 2, ensuring a secure connection between the pipe and the sleeve 1 during lifting. After locking the pipe with the locking member 2, an external lifting device is connected to the lifting member 3. The external lifting device applies force to the lifting member 3, which transmits the force to the sleeve 1, and then to the pipe, lifting one end of the pipe. The force-bearing point of the lifting member 3 is located on one side of the first end 1A, and the mounting annular hole 13 is located at the second end 1B. The first end 1A and the second end 1B are the two ends of the sleeve 1 along its axial direction, respectively. This allows for convenient lifting of the pipe to a vertical position, simplifying operation, reducing safety risks, shortening working time, and improving work efficiency. Meanwhile, the limiting cavity 11 plays an axial limiting role for the lifting component 3, preventing the lifting component 3 from detaching from the pipe sleeve 1 and improving the stability and safety of the lifting process. The lifting component 3 is rotatably located in the limiting cavity 11. After the vertical lifting is completed, when the pipeline needs to be threaded, the lifting component 3 is rotatably connected to the pipe sleeve 1, and the pipeline is stably connected to the pipe sleeve 1. The pipeline can be easily rotated, and the pipeline connection is simple, easy to achieve, and highly efficient.

[0039] In this embodiment, the locking member 2 is provided with an external thread. The locking member 2 passes through the threaded hole and is threadedly connected to the pipe sleeve 1 through the external thread. The threaded connection enables the locking member 2 to lock and unlock the pipe, which is convenient to operate and has a high degree of tightness.

[0040] In some embodiments, the locking member 2 is a bolt, which includes a bolt head 22 and a screw 21. The screw 21 is connected to the bolt head 22 and has an external thread. The outer wall of the sleeve 1 has a threaded hole, and the wall of the threaded hole has an internal thread. The threaded hole extends radially along the sleeve 1 to communicate with the mounting ring hole 13.

[0041] It should be noted that, to facilitate pipe insertion into the mounting ring hole 13, the radial width of the mounting ring hole 13 can be designed to be slightly larger than the pipe wall thickness. After inserting the pipe into the mounting ring hole 13, the bolt head 22 is turned to rotate the screw 21, causing the end of the screw 21 adjacent to the bolt head 22 to tightly abut against the outer wall of the pipe, thus fixing the pipe's position. After the pipe lifting operation and other work are completed, the locking element 2 can be loosened to unlock the pipe from the sleeve 1, allowing the vertical lifting and fixing device for the nuclear power plant maintenance pipe to be separated from the pipe.

[0042] In this embodiment, to improve the strength of the sleeve 1, the sleeve 1 can be made of steel. Steel refers to a metallic material composed of iron, carbon, and other alloying elements. The main component of steel is iron. Compared with cast iron, steel has advantages such as light weight, high strength, good toughness, low cost, and strong plasticity.

[0043] In this embodiment, to improve the strength of the lifting component 3, the lifting component 3 can also be made of steel.

[0044] like Figure 1 As shown, in this embodiment, the lifting member 3 includes a limiting part 31 and a lifting part 32. The limiting part 31 is rotatably disposed within the limiting cavity 11, ensuring the rotatable connection between the lifting member 3 and the pipe sleeve 1. This ensures that when subsequent pipe threading is performed, the pipe can be threadedly connected by rotating the pipe while it is held vertically by an external lifting device. This method offers high safety, simple operation, and quick and efficient connection. The wall of the limiting cavity 11 axially limits the limiting part 31, ensuring a stable connection between the lifting member 3 and the pipe sleeve 1, preventing separation of the lifting member 3 and the pipe sleeve 1, and reducing safety risks. The lifting part 32 is connected to the end of the limiting part 31 near the first end 1A. The lifting part 32 extends beyond the first end 1A from the clearance hole 12 and has a lifting hole 321 for connecting external lifting equipment. Thus, by providing a lifting hole 321 in the lifting part 32, it is possible to facilitate the connection and operation between external lifting equipment and the lifting part 32, and the connection stability is high.

[0045] In this embodiment, the lifting component 3 is manufactured using an integral molding process, which can form a structure including an integrally connected limiting part 31 and a lifting part 32 during the manufacturing process.

[0046] In the technical solution of this embodiment, the sleeve 1 is cylindrical; the radial section of the limiting cavity 11 is a circular hole, which can ensure that the sleeve 1 and the limiting part 31 rotate relative to each other, and that no offset occurs during the rotation, thus ensuring the stability and safety of lifting and subsequent operation of the pipeline.

[0047] In the technical solution of this embodiment, reference is made to Figure 1 The axes of the mounting ring hole 13, the limiting cavity 11, and the sleeve 1 are aligned; the lifting part 32 extends along the axis of the limiting cavity 11, and the center of the lifting hole 321 is located on the axis of the limiting cavity 11. Thus, when the pipe is lifted vertically, the direction of the force exerted by the external lifting equipment on the lifting part 32 coincides with the axis of the pipe, ensuring the accuracy and stability of vertical pipe lifting.

[0048] like Figure 1 As shown, in this embodiment, the limiting cavity 11 extends through the second end 1B along the axial direction of the sleeve 1; the diameter of the limiting cavity 11 gradually decreases from the second end 1B to the first end 1A; the shape of the peripheral wall of the limiting part 31 matches the shape of the hole wall of the limiting cavity 11. This design facilitates the quick assembly and separation of the lifting member 3 and the sleeve 1, improving efficiency. During assembly, the lifting member 3 is inserted into the limiting cavity 11 from the first end 1A, and the lifting part 32 protrudes from the clearance hole 12. The gradually narrowing diameter of the limiting cavity 11 provides axial limiting for the limiting part 31, preventing it from disengaging from the clearance hole 12. When it is necessary to replace the sleeve 1 with a mounting ring hole 13 of a different size, the lifting member 3 can be withdrawn from the first end 1A, thus separating the lifting member 3 from the sleeve 1. Among them, the pipe sleeve 1 with different sizes of mounting ring holes 13 can adapt to the needs of pipes with different diameters and wall thicknesses, expanding the applicability of the vertical lifting and fixing device for maintenance pipes in this nuclear power plant.

[0049] like Figure 1 As shown, in the technical solution of this embodiment, a roller 312 is also included, and the peripheral wall of the limiting part 31 is provided with an assembly ring groove 311; the roller 312 is disposed in the assembly ring groove 311 and is rotatably sleeved on the limiting part 31.

[0050] It is understandable that the mounting ring groove 311 can provide an installation position for the ball 313, and the roller 312 can reduce the friction between the limiting part 31 and the cavity wall of the limiting cavity 11.

[0051] refer to Figure 1 In this embodiment, the roller 312 is generally conical in shape.

[0052] In some embodiments, the roller 312 may be a bearing structure, comprising an inner ring and an outer ring, both of which are conical in shape. A ball is provided between the inner and outer rings, with the inner ring fitted onto the limiting portion 31 and the outer ring abutting against the cavity wall of the limiting cavity 11.

[0053] like Figure 1 As shown, in this embodiment, there are multiple assembly ring grooves 311, which are spaced apart along the axial direction of the limiting part 31; each assembly ring groove 311 contains a roller 312. This further reduces the friction between the limiting part 31 and the sleeve 1.

[0054] refer to Figure 1 In this embodiment, there are two assembly ring grooves 311.

[0055] In other embodiments, the assembly ring groove 311 may be designed as one, three, or four, etc., and there is no limitation here.

[0056] like Figure 1 As shown, the technical solution of this embodiment also includes a ball bearing 313, which is rotatably disposed between the roller 312 and the groove wall of the assembly ring groove 311, and the ball bearing 313 abuts against the end of the roller 312 facing the second end 1B.

[0057] Understandably, the ball 313 is installed on the side of the roller 312 near the second end 1B, in order to reduce the friction between the roller 312 and the mounting ring groove 311 when the roller 312 is under force.

[0058] In the technical solution of this embodiment, the groove wall of the assembly ring groove 311 is provided with a rolling groove (not shown in the figure), and the ball 313 is rolled in the rolling groove. It can be understood that the rolling groove provides an installation position for the ball 313 to achieve quick assembly, and the rolling groove also limits the ball 313 to prevent the ball 313 from falling off.

[0059] In another embodiment, the roller 312 is provided with a rolling groove, and the ball 313 is rotatably disposed in the rolling groove. For example, rolling grooves can be provided on the side of the inner ring facing the second end 1B and the side of the outer ring facing the second end 1B respectively, and the ball 313 is disposed in the rolling groove respectively.

[0060] In another embodiment, the groove wall of the assembly ring groove 311 and the roller 312 are respectively provided with rolling grooves, and the ball 313 is rolled within the rolling groove. The rolling grooves provided on the groove wall of the assembly ring groove 311 correspond to the rolling grooves provided on the side of the ball 313 facing the second end 1B. For example, when rolling grooves are provided on the side of the inner ring facing the second end 1B and the side of the outer ring facing the second end 1B respectively, the groove wall of the assembly ring groove 311 is provided with two rolling grooves arranged at intervals.

[0061] refer to Figure 1 In the technical solution of this embodiment, the peripheral wall of the sleeve is provided with multiple threaded holes along the circumferential direction, and the multiple threaded holes are symmetrically distributed with the axis of the sleeve as the axis of symmetry; in this way, it can be symmetrically locked in multiple places along the circumference of the pipe, which can improve the locking strength of the locking member 2 to the pipe and improve the connection stability between the pipe and the sleeve 1.

[0062] refer to Figure 1 In this embodiment, the depth direction of the mounting ring hole 13 is parallel to the axial direction of the sleeve; the peripheral wall of the sleeve is provided with at least two threaded holes spaced apart along the depth direction of the mounting ring hole 13. This allows for multiple locking points along the axial direction of the pipe, increasing the locking strength of the locking member 2 on the pipe and improving the connection stability between the pipe and the sleeve 1.

[0063] The following describes the usage of the vertical lifting and fixing device for nuclear power plant maintenance pipelines in this embodiment, with reference to the accompanying drawings:

[0064] Assembly: First, add an appropriate amount of lubricating oil to the assembly ring groove 311, and install the rollers 312 and balls 313 into the assembly ring groove 311; Second, insert the assembled lifting component 3 into the limiting cavity 11 from the second end 1B of the sleeve 1, with the clearance hole 12 of the first end 1A of the lifting part 32 of the lifting component 3 protruding. The vertical lifting and fixing device for nuclear power plant maintenance pipelines in this embodiment is now assembled.

[0065] All components were inspected and found to be normal. The hook of the external lifting equipment was connected to the lifting hole 321 of the vertical lifting and fixing device for the maintenance pipeline of the nuclear power plant. First, all the multiple locking pieces 2 symmetrically installed on the outer wall of the pipe sleeve 1 were loosened, and each locking piece 2 was retracted into the threaded hole. Then, the end of the pipe to be lifted was inserted into the mounting ring hole 13. After the pipe was inserted, all the multiple locking pieces 2 were tightened. At this point, the pipe to be lifted and the pipe sleeve 1 were completely locked and fixed by the multiple locking pieces 2.

[0066] When the external lifting equipment is activated, the lifting unit 32 will move along with the lifting component 3 as a whole, until the roller 312 contacts the inner conical surface of the sleeve 1 (the cavity wall of the limiting cavity 11). The external lifting equipment continues to provide power, and the lifting unit 32 will bear the force along with the lifting component 3, the sleeve 1, and the pipeline. At this time, the lifting unit 32 is positioned on the entire axis, so the entire pipeline is completely vertical. If the pipeline needs to be threaded, it can be completed simply by adjusting it to the appropriate height using the external lifting equipment and then rotating the pipeline. Due to the presence of the roller 312 and the ball bearing 313, the pipeline can be rotated arbitrarily.

[0067] After use, simply loosen all the locking parts 2 to complete the entire operation.

[0068] After use, lubricating oil can be added to the moving parts (such as assembly ring groove, rolling groove, limiting cavity 11, threaded hole, etc.) of the vertical lifting and fixing device for maintenance pipelines in this nuclear power plant to prevent corrosion. Store it for later use and check its integrity before each use.

[0069] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0070] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0072] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0073] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0074] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0075] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0076] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A nuclear power plant maintenance pipe vertical lifting fixing device, characterized in that, include: The sleeve (1) has a first end (1A) and a second end (1B) disposed opposite to each other along the axial direction of the sleeve (1); the sleeve (1) is provided with a limiting cavity (11), and the first end (1A) is provided with a clearance hole (12) communicating with the limiting cavity (11); the second end (1B) is provided with a mounting ring hole (13) for accommodating the end of the pipe; the mounting ring hole (13) is arranged around the axis of the sleeve (1); A locking member (2) is inserted through the peripheral wall of the sleeve (1) and into the mounting ring hole (13); the locking member (2) is used to abut against the outer wall of the pipe in the mounting ring hole (13) to clamp the pipe. The lifting component (3) is rotatably disposed within the limiting cavity (11); the lifting component (3) is axially limited within the limiting cavity (11); one end of the lifting component (3) extends from the clearance hole (12) to the outside of the first end (1A) for connecting to external lifting equipment.

2. The nuclear power plant maintenance pipe vertical lift fixation device according to claim 1, characterized in that, The lifting component (3) includes: The limiting part (31) is rotatably disposed in the limiting cavity (11), and the hole wall of the limiting cavity (11) axially limits the limiting part (31); The lifting part (32) is connected to the end of the limiting part (31) near the first end (1A); the lifting part (32) extends out of the clearance hole (12) beyond the first end (1A), and the lifting part (32) is provided with a lifting hole (321); the lifting hole (321) is used to connect external lifting equipment.

3. The nuclear power plant maintenance pipe vertical lift fixation device according to claim 2, characterized in that, The sleeve (1) is cylindrical; the radial section of the limiting cavity (11) is a circular hole; the axis of the mounting ring hole (13), the axis of the limiting cavity (11) and the axis of the sleeve (1) coincide; the lifting part (32) extends along the axis of the limiting cavity (11), and the center of the lifting hole (321) is located on the axis of the limiting cavity (11).

4. The vertical lifting and fixing device for nuclear power plant maintenance pipelines according to claim 2, characterized in that, The limiting cavity (11) extends through the second end (1B) along the axial direction of the sleeve (1); the diameter of the limiting cavity (11) gradually decreases from the second end (1B) to the first end (1A); the peripheral wall shape of the limiting part (31) is adapted to the hole wall shape of the limiting cavity (11).

5. The nuclear power plant maintenance pipe vertical lift fixture of claim 2, wherein, It also includes rollers (312), and the peripheral wall of the limiting part (31) is provided with an assembly ring groove (311); the rollers (312) are disposed in the assembly ring groove (311) and are rotatably sleeved on the limiting part (31).

6. The nuclear power plant maintenance pipe vertical lift fixture of claim 5, wherein, The number of the assembly ring grooves (311) is multiple, and the multiple assembly ring grooves (311) are arranged at intervals along the axial direction of the limiting part (31); each assembly ring groove (311) is provided with a roller (312).

7. The nuclear power plant maintenance pipe vertical lift fixture of claim 5, wherein, It also includes a ball (313) that is rotatably disposed between the roller (312) and the groove wall of the assembly ring groove (311), and the ball (313) abuts against the end of the roller (312) facing the second end (1B).

8. The nuclear power plant maintenance pipe vertical lift fixture of claim 7, wherein, The groove wall of the assembly ring groove (311) and / or the roller (312) are provided with rolling grooves, and the ball (313) is rolled in the rolling groove.

9. The nuclear power plant maintenance pipe vertical lift fixation device according to any one of claims 1 to 8, characterized in that, The sleeve (1) has a plurality of threaded holes along its circumferential direction on its peripheral wall, and the plurality of threaded holes are symmetrically distributed about the axis of the sleeve (1). The locking member (2) is provided with an external thread. The locking member (2) passes through the threaded hole and is threadedly connected to the sleeve (1) through the external thread.

10. The nuclear power plant maintenance pipe vertical lift fixture of claim 9, wherein, The depth direction of the mounting ring hole (13) is parallel to the axial direction of the sleeve (1); the peripheral wall of the sleeve (1) is provided with at least two threaded holes spaced apart along the depth direction of the mounting ring hole (13).

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