Steel cable supporting anti-impact device applicable to high-energy pipeline of nuclear power plant

Abstract

The steel cable supporting anti-impact device is used for supporting the high-energy pipeline, the steel cable supporting anti-impact device comprises an anchoring point, a steel cable and at least one fixed pulley, the anchoring point is used for fixedly arranging the fixed pulley, one end of the steel cable is fixed, and the other end of the steel cable is fixed after bypassing the fixed pulley and the high-energy pipeline; and the high-energy pipeline and the fixed pulley form a pulley block. According to the steel cable supporting anti-impact device suitable for the high-energy pipeline of the nuclear power plant, through the design of the pulley structure, the multiple functions of supporting, vibration reduction, shock isolation and impact prevention are integrated, the performance and anti-throwing function performance parameters of various types of supports are effectively improved, and meanwhile the steel cable supporting anti-impact device has the advantages of being flexible in design, good in change adaptability, convenient to standard, serialize and modularize, high in practicability and the like. The anti-throwing device has the advantages of being simple in structure, convenient to install, overhaul and replace and the like, can overcome the defects and disadvantages of an existing anti-throwing scheme, and provides an optimized scheme for high-energy pipe system supporting and disaster protection design in miniaturization and integration of a nuclear power plant.

Description

Technical Field

[0001] The present application relates to the technical field of safety of high-energy pipelines in nuclear power plants, and more specifically, to a steel cable support anti-impact device suitable for high-energy pipelines in nuclear power plants. Background Art

[0002] There are a large number of high-energy pipelines in nuclear power plants. High-energy pipelines work under high temperature and high pressure conditions for a long time. The static and dynamic loads on the high-energy pipelines are large. If the pipelines are ruptured, the impact load generated is very large. Under the action of the impact load, there will be impacts such as pipeline swinging and flying objects, which will have serious impacts and consequences.

[0003] In the design of high-energy pipelines in nuclear power plants, it is usually necessary to set up barriers (anti-throw walls, anti-throw parts, etc.) to limit the impact of high-energy pipeline ruptures. These barriers are usually only used to protect high-energy pipeline ruptures, but cannot be used to support dynamic and static loads in operating conditions and vibration reduction and seismic isolation in accident conditions (such as earthquakes). They are also large in size, have high installation requirements, and poor versatility.

[0004] Therefore, there is an urgent need to invent a universal device suitable for high-energy pipelines in nuclear power plants with supporting, vibration reduction, seismic isolation and impact protection functions. Summary of the invention

[0005] The technical problem to be solved by the present application is to provide a steel cable support and anti-impact device suitable for high-energy pipelines in nuclear power plants, which integrates multiple functions of support, vibration reduction, seismic isolation and anti-impact.

[0006] The technical solution adopted by the embodiment of the first aspect of the present application to solve its technical problem is: constructing a steel cable supported anti-impact device suitable for a high-energy pipeline in a nuclear power plant, which is used to support the high-energy pipeline. The steel cable supported anti-impact device includes an anchor point, a steel cable and at least one fixed pulley. The anchor point is used to fix the fixed pulley. One end of the steel cable is fixed, and the other end of the steel cable is fixed after passing through the fixed pulley and the high-energy pipeline, so that the high-energy pipeline acts as a movable pulley and forms a pulley group with the fixed pulley.

[0007] In some embodiments of the first aspect of the present application, a plurality of fixed pulleys are provided, and the plurality of fixed pulleys are respectively provided on both sides of the high-energy pipeline.

[0008] In some embodiments of the first aspect of the present application, a first fixed pulley supporter is provided on one side of the high-energy pipeline, and a second fixed pulley supporter is provided on the other side of the high-energy pipeline, and the fixed pulleys are respectively provided on the first fixed pulley supporter and the second fixed pulley supporter.

[0009] In some embodiments of the first aspect of the present application, a length of the steel cable between the fixed pulley and the high-energy pipeline is 3 to 300 times the outer diameter of the high-energy pipeline.

[0010] In some embodiments of the first aspect of the present application, the angle between the steel cables extending from the high-energy pipeline to the fixed pulleys on both sides is α, and the value of α is 10 degrees to 80 degrees.

[0011] In some embodiments of the first aspect of the present application, a spring is provided at at least one end of the steel cable, and the steel cable is connected to the anchor point via the spring for fixation.

[0012] In some embodiments of the first aspect of the present application, the spring is a constant force spring.

[0013] In some embodiments of the first aspect of the present application, a damper is provided at at least one end of the steel cable, and the steel cable is connected to the anchor point via the damper for fixation.

[0014] In some embodiments of the first aspect of the present application, a sheath is provided on the high-energy pipeline, and the steel cable is wound on the sheath.

[0015] In some embodiments of the first aspect of the present application, the steel cable is braided from multiple steel wire ropes and a composite material.

[0016] The implementation of this application has at least the following beneficial effects: the steel cable supported anti-impact device suitable for high-energy pipelines in nuclear power plants provided by this application, through the design of the pulley structure, integrates multiple functions of support, vibration reduction, seismic isolation and impact protection, effectively improves the performance of various types of supports and the performance parameters of the anti-throwing function, and at the same time has the advantages of flexible design, good adaptability to changes, easy standardization, serialization and modularization, easy installation, maintenance and replacement, etc., which can overcome the shortcomings and disadvantages of the current anti-throwing scheme and provide an optimization scheme for the piping support and disaster protection design in the miniaturization and integration of nuclear power plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present application will be further described below with reference to the accompanying drawings and embodiments, in which:

[0018] Figure 1 Schematic diagram of the cable-supported anti-shock device applicable to the high-energy pipeline of a nuclear power plant provided for this application;

[0019] Figure 2 A schematic diagram of the structure of the first embodiment provided in this application;

[0020] Figure 3 for Figure 2 A left side view of the cable supported anti-shock device shown;

[0021] Figure 4 A schematic diagram of the structure of the second embodiment and the third embodiment provided in this application;

[0022] Figure 5 The invention is an anti-throwing structure for protecting high-energy pipelines in the prior art.

[0023] Description of Figure Numbers:

[0024] High-energy pipeline 100, sheath 110, steel cable 200, fixed pulley 300, first fixed pulley supporter 310, second fixed pulley supporter 320, anchor point 400, spring 500, damper 600, anti-throwing floor slab 700, anti-throwing wall 800. DETAILED DESCRIPTION

[0025] In order to have a clearer understanding of the technical features, purposes and effects of the present application, the specific implementation methods of the present application are now described in detail with reference to the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0026] In the description of the present application, it should be understood that the terms "longitudinal", "lateral", "up", "down", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings or the orientations or positional relationships in which the products of the present application are usually placed when used. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

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

[0029] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] Reference Figure 5 In the prior art, the high-energy pipeline 100 is protected. Generally, an anti-slinging floor slab 700 is arranged near the potential rupture position of the high-energy pipeline 100, such as the elbow, and an anti-slinging wall 800 is arranged in the direction of the high-energy pipeline 100 after the rupture. The anti-slinging floor slab 700 and the anti-slinging wall 800 are both concrete structures. A perforation is arranged in the middle of the anti-slinging floor slab 700. Under normal working conditions, the high-energy pipeline 100 passes through the middle of the perforation. At the same time, there is a gap between the anti-slinging wall 800 and the high-energy pipeline 100, ensuring that the high-energy pipeline 100 does not contact the anti-slinging floor slab 700 and the anti-slinging wall 800, and does not interfere with each other. Under the working condition of the high-energy pipeline 100 rupture, the movement of the ruptured pipeline is limited by the direct collision between the high-energy pipeline 100 and the anti-slinging floor slab 700 and the anti-slinging wall 800, so as to realize the anti-slinging function. In addition, as an improvement, the prior art also has a method of adding a rigid steel structure to the anti-throwing floor 700 and the anti-throwing wall 800 to improve the rigidity of the anti-throwing structure and further limit the movement of the ruptured pipeline to achieve an anti-impact design. However, the above schemes are only applicable to the case where the high-energy pipeline 100 is close to the concrete structure, and after the collision, it is easy to generate a large dynamic load at other positions of the high-energy pipeline 100, and to generate secondary projectiles near the collision. Moreover, the structural scheme of the prior art can only protect the high-energy pipeline 100 under the condition of rupture, but cannot support the high-energy pipeline 100 under normal conditions, and has a single function.

[0031] The following is combined with Figure 1 To Attachment Figure 4The provided embodiments further illustrate the steel cable supported anti-shock device applicable to the high-energy pipeline of a nuclear power plant proposed in the present application.

[0032] Reference Figure 1 The embodiment of the present application provides a cable-supported anti-shock device applicable to a high-energy pipeline of a nuclear power plant, which is used to support the high-energy pipeline 100 and can play a shock-absorbing and protective role when the high-energy pipeline 100 is in an abnormal working condition. Specifically, the cable-supported anti-shock device includes an anchor point 400, a cable 200 and at least one fixed pulley 300. The anchor point 400 is used to fix the fixed pulley 300. One end of the cable 200 is fixed, and the other end of the cable 200 is fixed after passing through the fixed pulley 300 and the high-energy pipeline 100, and the high-energy pipeline 100 is used as a movable pulley to form a pulley group with the fixed pulley 300, so as to realize the distributed support of the high-energy pipeline 100. The cable-supported anti-shock device of the present application uses the high performance, high reliability and high plastic strengthening performance of the cable 200 and the load transmission characteristics of the movable pulley, and efficiently utilizes the mechanical properties of the components to provide the high-energy pipeline 100 with support, vibration reduction, seismic isolation and shock-proof functions at the same time. In addition, in the present application, there are at least two connection schemes between the end of the steel cable 200 and the anchor point 400. One is directly connected through the steel cable 200, and the other is connected through a combination of springs 500 and / or dampers 600 according to functional requirements.

[0033] like Figure 2 As shown, in the first embodiment of the present application, a first fixed pulley supporter 310 is provided on one side of the high-energy pipeline 100, and a second fixed pulley supporter 320 is provided on the other side of the high-energy pipeline 100. A plurality of fixed pulleys 300 are provided, and the fixed pulleys 300 are respectively provided on the first fixed pulley supporter 310 and the second fixed pulley supporter 320. The steel cable 200 is respectively passed around the fixed pulley 300 and the high-energy pipeline 100. Specifically, one end of the steel cable 200 is fixed on the second fixed pulley supporter 320, and the other end of the steel cable 200 is wound between the high-energy pipeline 100, the fixed pulley 300 on the first fixed pulley supporter 310, and the fixed pulley 300 on the second fixed pulley supporter 320, as shown in FIG. Figure 2 As shown, the steel cable 200 passes around the high-energy pipeline 100 three times and is finally fixed on the first fixed pulley support 310. In this embodiment, the end of the steel cable 200 is directly connected to the anchor point 400, and no buffer device is used. The high damping characteristics of the steel cable 200 are used to suppress the vibration of the high-energy pipeline 100 system under operating conditions. The distributed support characteristics of the steel cable 200 are used to achieve seismic isolation of the high-energy pipeline 100. The yield flow and plastic strengthening material characteristics of the steel cable 200 are used to absorb the impact energy when the high-energy pipeline 100 ruptures and control the displacement. Further, as Figure 3As shown, the length of the steel cable 200 between the fixed pulley 300 and the high-energy pipeline 100 is 3 to 300 times the outer diameter of the high-energy pipeline 100, and the angle between the steel cables 200 extending from the high-energy pipeline 100 to the fixed pulleys 300 on both sides is α, and the size of α is 10 degrees to 80 degrees.

[0034] like Figure 4 As shown, in Figure 4 In the second embodiment provided on the left, a spring 500 may be provided at one end of the steel cable 200. The spring 500 is a constant force spring. The steel cable 200 is connected to the anchor point 400 for fixing by the constant force spring. The other end of the steel cable 200 is fixed after passing through the fixed pulley 300 and the high energy pipeline 100 for multiple times, so that the high energy pipeline 100 serves as a movable pulley and forms a pulley block with the fixed pulley 300. Figure 4 In the third embodiment provided on the right, a damper 600 may be provided at one end of the steel cable 200. The damper 600 is a hydraulic damper. The steel cable 200 is connected to the anchor point 400 for fixing through the damper 600. The other end of the steel cable 200 is fixed after passing through the fixed pulley 300 and the high-energy pipeline 100 for multiple times, so that the high-energy pipeline 100 serves as a movable pulley and forms a pulley block with the fixed pulley 300. Figure 4 In the two provided embodiments, the end of the steel cable 200 is connected to the anchor point 400 through a spring 500 or a damper 600. In the non-high-energy pipeline 100 rupture condition, the steel cable 200 is used to transfer the load to the spring 500 and the damper 600 to achieve the buffering and shock-resistant functions. The combination of the steel cable 200, the fixed pulley 300 and the movable pulley (high-energy pipeline 100) amplifies the performance of the spring 500 and the damper 600, so that it can absorb more load and have a higher bearing capacity. In the high-energy pipeline 100 rupture condition, the yield flow and plastic strengthening material properties of the steel cable 200 are used to absorb the impact energy when the high-energy pipeline 100 ruptures and control the displacement.

[0035] Furthermore, a sheath 110 is provided on the high-energy pipeline 100 , and the steel cable 200 is wound on the sheath 110 . The sheath 110 can protect the high-energy pipeline 100 and prevent the steel cable 200 from damaging the high-energy pipeline 100 , and can also improve the convenience of moving the steel cable 200 .

[0036] Furthermore, the fixed pulley 300 disposed on the first fixed pulley supporter 310 and the second fixed pulley supporter 320 adopts a structure mode of upper and lower splicing, so that the installation of the fixed pulley 300 is more convenient.

[0037] Furthermore, in the present application, the steel cable 200 is braided from multiple strands of steel wire ropes and composite materials and has high damping. By properly selecting the steel cable (steel wire material, diameter, number of strands, braiding method, etc.), its vibration reduction and seismic isolation performance is improved.

[0038] The cable-supported anti-shock device of the present application can conveniently adjust the distance between the anchor point 400 and the high-energy pipeline 100 by adjusting the cable 200 during installation, and has wider spatial adaptability; and the cable-supported anti-shock device of the present application can be installed not only on straight pipes (such as Figure 2 As shown), it can also be installed on elbows / elbows (such as Figure 4 As shown), it provides an anti-throwing function for the ruptures on both sides of the elbow / bend; when the spring 500 and the damper 600 are provided on the steel cable support anti-impact device, the connection position of the spring 500 and the damper 600 with the anchor point 400 can be converted to a position that is more convenient for installation and operation and maintenance through the steel cable 200. In addition, the steel cable support anti-impact device of the present application can produce a large plastic deformation of the steel cable 200 when the displacement of the high-energy pipeline 100 at the rupture position is very small, reducing the load on other positions of the high-energy pipeline 100 outside the rupture position, and effectively controlling the load on the civil engineering structure through the distributed anchor points 400 and the large plastic deformation of the steel cable 200.

[0039] The cable-supported anti-impact device suitable for high-energy pipelines in nuclear power plants provided in the present application integrates multiple functions of support, vibration reduction, seismic isolation and anti-impact through the design of a pulley structure, effectively improving the performance of various types of supports and the performance parameters of the anti-throwing function. At the same time, it has the advantages of flexible design, good adaptability to changes, convenience for standardization, serialization and modularization, convenience for installation, maintenance and replacement, etc. It can overcome the shortcomings and disadvantages of the current anti-throwing scheme and provide an optimized scheme for the piping support and disaster protection design in the miniaturization and integration of nuclear power plants.

[0040] The above embodiments only express the specific implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the present application. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the present application, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the present application. Therefore, all equivalent changes and modifications made to the scope of the claims of the present application should belong to the scope covered by the claims of the present application.

Claims

1. A cable support anti-impact device suitable for a high-energy pipeline in a nuclear power plant, used for supporting the high-energy pipeline (100), characterized in that: The steel cable supported anti-impact device comprises an anchor point (400), a steel cable (200) and at least one fixed pulley (300); the anchor point (400) is used to fix the fixed pulley (300); one end of the steel cable (200) is fixed; the other end of the steel cable (200) is passed around the fixed pulley (300) and the high-energy pipeline (100) and then fixed, so that the high-energy pipeline (100) serves as a movable pulley and forms a pulley block with the fixed pulley (300).

2. The cable support anti-shock device suitable for high-energy pipelines in nuclear power plants according to claim 1 is characterized in that: A plurality of the fixed pulleys (300) are provided, and the plurality of the fixed pulleys (300) are respectively provided on both sides of the high-energy pipeline (100).

3. The cable support anti-shock device applicable to high-energy pipelines in nuclear power plants according to claim 2 is characterized in that: A first fixed pulley supporter (310) is provided on one side of the high-energy pipeline (100), and a second fixed pulley supporter (320) is provided on the other side of the high-energy pipeline (100), and the fixed pulley (300) is respectively provided on the first fixed pulley supporter (310) and the second fixed pulley supporter (320).

4. The cable support anti-shock device applicable to high-energy pipelines in nuclear power plants according to claim 3 is characterized in that: The length of the steel cable (200) between the fixed pulley (300) and the high-energy pipeline (100) is 3 to 300 times the outer diameter of the high-energy pipeline (100).

5. The cable support anti-shock device for high-energy pipelines in nuclear power plants according to any one of claims 2 to 4, characterized in that: The included angle between the steel cables (200) extending from the high-energy pipeline (100) to the fixed pulleys (300) on both sides is α, and the value of α is 10 degrees to 80 degrees.

6. The cable support anti-shock device applicable to high-energy pipelines in nuclear power plants according to claim 1, characterized in that: At least one end of the steel cable (200) is provided with a spring (500), and the steel cable (200) is connected to the anchor point (400) through the spring (500) for fixation.

7. The cable support anti-shock device suitable for high-energy pipelines in nuclear power plants according to claim 6, characterized in that: The spring (500) is a constant force spring.

8. The cable support anti-shock device applicable to high-energy pipelines in nuclear power plants according to claim 1, characterized in that: At least one end of the steel cable (200) is provided with a damper (600), and the steel cable (200) is connected to the anchor point (400) through the damper (600) for fixation.

9. The cable support anti-shock device applicable to high-energy pipelines in nuclear power plants according to claim 1, characterized in that: The high-energy pipeline (100) is provided with a sheath (110), and the steel cable (200) is wound on the sheath (110).

10. The cable support anti-shock device applicable to high-energy pipelines in nuclear power plants according to claim 1, characterized in that: The steel cable (200) is formed by braiding a plurality of steel wire ropes and a composite material.

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