Stainless steel special-shaped pipe for nuclear power engineering
Through the butt ring, elastic ring and cement layer injection design of stainless steel special-shaped pipes, the problems of leakage easily and poor structural stability of traditional pipeline connections under high pressure and high temperatures are solved, efficient sealing and simplified maintenance are achieved, and the safety and reliability of nuclear power plants are improved. sex.
Patent Information
- Application Number
- CN202421261441.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2034-06-04
AI Technical Summary
Traditional nuclear power engineering pipeline connections are prone to leakage under high pressure or high temperature conditions, have poor structural stability, difficult maintenance, and low material use efficiency, which affects the safety and reliability of nuclear power plants.
It adopts stainless steel special-shaped pipes, through the close cooperation between the butt ring and the docking pipe, the elastic ring design, cement layer injection and protective layer, providing an efficient seal, structural stability and easy maintenance design.
It achieves efficient sealing, enhances structural stability, reduces leakage risks, simplifies maintenance processes, reduces material usage and manufacturing costs, and improves the safety and reliability of nuclear power plants.
Smart Images
Figure CN222334763U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of nuclear power engineering, in particular to a stainless steel special-shaped pipe for nuclear power engineering. Background Art
[0002] In nuclear power projects, piping systems play a vital role in transporting coolants, control systems and other important substances. However, traditional piping connection technologies have some problems, including insufficient sealing, poor structural stability, difficult maintenance and inefficient material use.
[0003] Traditional pipeline connections usually use threaded connections or welding, which are prone to leakage under high pressure or high temperature conditions, threatening the safe operation of nuclear power plants. In addition, the structural design of the pipeline system is not stable enough and is easily deformed or damaged by external environmental influences or internal pressure changes, affecting the long-term reliability and safety of the pipeline. In terms of maintenance, traditional pipeline systems require a lot of manpower and time for repair, because it is difficult to easily access the inside of the pipeline for maintenance operations, which increases maintenance costs and system downtime, affecting the normal operation of nuclear power plants. In addition, the design of traditional pipeline systems may have unnecessary material waste, resulting in increased manufacturing costs and environmental burdens, which is not conducive to resource conservation and environmental protection.
[0004] Therefore, in order to solve these problems, it is necessary to propose a new type of stainless steel special-shaped tube for nuclear power engineering. Utility Model Content
[0005] The utility model mainly solves the above technical problems and provides a stainless steel special-shaped pipe for nuclear power engineering.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a stainless steel special-shaped tube for nuclear power engineering, comprising two stainless steel tubes butted against each other, the adjacent ends of the two stainless steel tubes are respectively provided with sealing components for butting against each other, the sealing components are respectively located at the butt rings and butt tubes on the two stainless steel tubes, an elastic ring with elasticity is installed at the center of the inside of the butt tube, a movable plate is arranged on the outermost side of the butt tube, a connecting hole is penetrated through the outside of the elastic ring, a sealing plug is plugged on the connecting hole, a cement layer is injected into the inside of the butt tube from the opening of the movable plate, the cement layer is filled on both sides of the elastic ring, and a circle of protective structure is arranged on the outer cylinder of the stainless steel tube.
[0007] Preferably, a clamping plate is installed at one end of the docking ring inserted into the docking tube, and the clamping plates are distributed in a ring-shaped manner with equal intervals on the docking ring.
[0008] Preferably, the connecting hole is a circular hole, and the sealing plug is a T-shaped structure.
[0009] Preferably, the protective structure layer includes a semicircular protective layer and twenty-four protective layers are arranged on the outer cylinder of the stainless steel tube.
[0010] Preferably, a reserved cavity is provided through the interior of each of the protective layers.
[0011] Preferably, the movable plate includes a sealing baffle located on the outside of the butt-joint tube, and the sealing baffle is movably connected to the outer surface of the butt-joint tube via a hinge.
[0012] Beneficial Effects
[0013] The utility model provides a stainless steel special-shaped pipe for nuclear power engineering, which has the following beneficial effects:
[0014] (1) This stainless steel special-shaped tube for nuclear power engineering provides efficient and stable sealing performance through the close fit between the butt ring and the butt tube and the design of the elastic ring, effectively preventing leakage under high pressure or high temperature environment, and ensuring the safe operation of the nuclear power plant.
[0015] (2) This stainless steel special-shaped pipe for nuclear power engineering uses a cement layer injection system to enhance the stability of the structure and further enhance the sealing effect after curing, thereby improving the long-term reliability of the connection.
[0016] (3) The special-shaped stainless steel tube for nuclear power engineering provides physical protection on the outer cylinder of the stainless steel tube through the design of the protective layer, thereby reducing damage to the tube body during transportation or installation and extending the service life.
[0017] (4) This stainless steel special-shaped tube for nuclear power engineering is designed with easy-to-operate movable plates and sealing baffles, so that the inside of the tube can be easily accessed for maintenance or further sealing when necessary, thereby improving the efficiency of maintenance work and reducing system downtime.
[0018] (5) The design of the reserved cavity of the internal protective layer of this stainless steel special-shaped tube for nuclear power engineering reduces the structural weight, reduces the material usage and manufacturing cost, simplifies the structural design and maintenance process, reduces the need for maintenance and replacement, and enhances environmental sustainability. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.
[0020] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.
[0021] Figure 1 This is a schematic diagram of a half-section state of a stainless steel special-shaped pipe being butted together according to the utility model;
[0022] Figure 2 This is a cross-sectional schematic diagram of the connection of the stainless steel special-shaped pipe of the utility model;
[0023] Figure 3 This is a side view of the stainless steel special-shaped tube of the utility model;
[0024] Figure 4 It is a three-dimensional schematic diagram of the stainless steel special-shaped tube of the utility model.
[0025] Legend:
[0026] 1. Stainless steel pipe; 2. Protective layer; 201. Reserved cavity; 3. Docking ring; 301. Snap-in plate; 4. Docking tube; 5. Elastic ring; 501. Connecting hole; 502. Sealing plug; 6. Cement layer; 8. Sealing baffle. DETAILED DESCRIPTION
[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0028] Embodiment: A stainless steel special-shaped tube for nuclear power engineering, such as Figure 1 - Figure 4As shown, it includes two stainless steel pipes 1 butted against each other, and the adjacent ends of the two stainless steel pipes 1 are respectively provided with sealing components for butt connection, and the sealing components are respectively located at the butt rings 3 and butt tubes 4 on the two stainless steel pipes 1, and an elastic ring 5 with elasticity is installed at the center of the inside of the butt tube 4, and a movable plate is arranged on the outermost side of the butt tube 4, and the movable plate includes a sealing baffle 8 located on the outside of the butt tube 4, and the sealing baffle 8 is movably connected to the outer surface of the butt tube 4 through a hinge, and a connecting hole 501 is opened through the outside of the elastic ring 5, and a sealing plug 502 is plugged on the connecting hole 501, and a cement layer 6 is injected into the inside of the butt tube 4 from the opening of the movable plate, and the cement layer 6 is filled on both sides of the elastic ring 5, and a circle of protective structure layer is arranged on the outer cylinder of the stainless steel pipe 1.
[0029] Furthermore, a clamping plate 301 is installed at one end of the docking ring 3 inserted into the docking tube 4, and the clamping plates 301 are distributed in a circular shape with equal intervals on the docking ring 3. By providing a circle of clamping plates 301 distributed with intervals on the docking ring 3, the cement layer 6 injected into the elastic ring 5 can be easily flowed into both sides of the docking ring 3 for solidification.
[0030] Furthermore, the connecting hole 501 is a circular hole, and the sealing plug 502 is a T-shaped structure. By opening the connecting hole 501 on the elastic ring 5, the cement layer 6 can be injected into the two ends of the inside of the butt joint 4 along the connecting hole 501. When the cement layer 6 injected into the inner side of the butt joint 4 solidifies, the sealing plug 502 can be inserted into the connecting hole 501 to seal it, and the cement layer 6 is injected into the elastic ring 5 and the outer side of the inside and outside of the butt joint 4 again. The cement layer 6 forms a ring structure on both sides of the butt joint 4. The elastic ring 5 is located between the ring structures formed by the two groups of cement layers 6 for isolation, and then the movable plate at the outer opening of the butt joint 4 is sealed.
[0031] Furthermore, the protective structure layer includes a semicircular protective layer 2 and twenty-four protective layers 2 are arranged on the outer cylinder of the stainless steel pipe 1. By forming a circle of semicircular protective layer 2 on the outer cylinder of the stainless steel pipe 1, when the stainless steel pipe 1 is transported and docked, a comprehensive protective effect is exerted on the outer cylinder of the stainless steel pipe 1.
[0032] Furthermore, each of the protective layers 2 is provided with a reserved cavity 201. By providing the reserved cavity 201 along the length direction on the inner side of the protective structure layer, the relative mass of the protective structure layer is reduced and transportation is facilitated.
[0033] The working principle of the utility model is as follows: when two groups of stainless steel pipes 1 are connected by a sealing assembly for docking, the docking rings 3 on the two stainless steel pipes 1 are docked with the docking tubes 4, and the docking rings 3 are inserted into the circular grooves of the docking tubes 4. At this time, the movable door on the outer side of the docking tubes 4 is opened, and then the sealing plug 502 on the elastic ring 5 inside the docking tubes 4 and inserted into the connecting hole 501 is pulled out, and the cement layer 6 is poured into the inner ring of the docking tube 4 separated by the elastic ring 5, and then the sealing plug 502 is inserted into the connecting hole 501 to separate the inner ring of the docking tube 4, and then the cement layer 6 is continued to be injected from the opening of the movable door to pour the inner outer ring of the docking tube 4, and then the movable door on the outer side of the docking tube 4 is closed. At this time, inner and outer layers of cement layers 6 are formed inside the docking tubes 4 in the docking connection of the two groups of stainless steel pipes 1, and there is also an elastic ring 5 with elasticity and good sealing performance in the middle to separate them, so as to form a multi-layer sealing effect at the connection between the stainless steel pipes 1 and the stainless steel pipes 1.
[0034] The main structural components and their effects in this technical solution
[0035] Docking ring 3 and docking tube 4:
[0036] The two parts form a precise butt joint to ensure a stable connection between the stainless steel pipes. The insertion of the butt joint ring 3 and the cooperation of the butt joint pipe 4 form a sealed environment to effectively prevent fluid leakage.
[0037] Elastic ring 5:
[0038] Installed inside the butt joint 4, the elastic ring 5 allows the cement layer 6 to be injected through the connection hole 501 inside it, and achieves sealing after injection through the sealing plug 502. This structure not only provides a physical barrier to prevent leakage, but also, due to its elasticity, can absorb and compensate for any minor deformation caused by thermal expansion or other mechanical stress.
[0039] Cement layer 6: The cement layer injected into both sides of the elastic ring 5 enhances the stability of the overall structure and further strengthens the sealing effect after curing. The presence of the cement layer ensures that the connection remains sealed and stable even under high pressure or high temperature environment.
[0040] Protective structure layer (protective layer 2):
[0041] The semicircular shape is evenly distributed on the outer cylinder of the stainless steel pipe 1, providing physical protection and reducing damage to the pipe body during transportation or installation. In addition, the internal reserved cavity 201 of each protective layer reduces the overall weight and facilitates transportation and installation.
[0042] Thermal and mechanical stress relief:
[0043] The elastic ring 5 is not only designed for sealing, but also can buffer the small displacement or deformation of the connection part caused by temperature change or mechanical pressure, and protect the structure from long-term stress damage.
[0044] Ease of installation and maintenance:
[0045] The design of the movable plate and the sealing baffle 8 allows easy access to the interior of the butt joint 4 for maintenance or further sealing when necessary. This design simplifies possible maintenance work and reduces system downtime.
[0046] Environmental protection and economic benefits:
[0047] The design of the reserved cavity 201 not only reduces the weight of the structure, but also may reduce the amount of material used and the manufacturing cost. In addition, the simplified structural design and maintenance process reduce the need for overall maintenance and replacement, and extend the service life.
[0048] The stainless steel special-shaped pipe in this technical solution provides an efficient and stable sealing performance through its unique structural design, such as the close fit between the butt ring and the butt pipe, the elastic seal of the elastic ring and its cement injection system. At the same time, the design of the protective layer increases the mechanical protection and service life of the pipeline. These design details not only optimize the functional performance, but also improve the flexibility of operation and environmental sustainability.
[0049] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A stainless steel special-shaped tube for nuclear power engineering, comprising two stainless steel tubes (1) butted against each other, characterized in that: The adjacent ends of the two stainless steel pipes (1) are respectively provided with sealing components for butt connection. The sealing components are respectively located at the butt connection rings (3) and the butt connection pipes (4) on the two stainless steel pipes (1). An elastic ring (5) with elasticity is installed at the center of the butt connection pipe (4). A movable plate is arranged at the outermost side of the butt connection pipe (4). A connecting hole (501) is penetrated through the outer side of the elastic ring (5). A sealing plug (502) is plugged on the connecting hole (501). A cement layer (6) is injected into the butt connection pipe (4) from the opening of the movable plate. The cement layer (6) is filled on both sides of the elastic ring (5). A protective structural layer is arranged on the outer cylinder of the stainless steel pipe (1).
2. The stainless steel special-shaped tube for nuclear power engineering according to claim 1, characterized in that: A clamping plate (301) is installed at one end of the docking ring (3) inserted into the docking tube (4), and the clamping plates (301) are distributed in a ring-shaped manner at equal intervals on the docking ring (3).
3. The stainless steel special-shaped tube for nuclear power engineering according to claim 1, characterized in that: The connecting hole (501) is a circular hole, and the sealing plug (502) is a T-shaped structure.
4. The stainless steel special-shaped tube for nuclear power engineering according to claim 1, characterized in that: The protective structure layer comprises a semicircular protective layer (2), and twenty-four protective layers (2) are arranged on the outer cylinder of the stainless steel pipe (1).
5. The stainless steel special-shaped tube for nuclear power engineering according to claim 4, characterized in that: A reserved cavity (201) is provided through the interior of each protective layer (2).
6. The stainless steel special-shaped tube for nuclear power engineering according to claim 1, characterized in that: The movable plate comprises a sealing baffle (8) located on the outside of the butt-joint pipe (4); the sealing baffle (8) is movably connected to the outer surface of the butt-joint pipe (4) via a hinge.