Gas anti-whipping structure

Abstract

The application provides a gas anti-throwing structure, which comprises a pressure container and a limiting part. The limiting part is installed on a fixed base and is formed with a containing cavity containing the pressure container; the top end of the limiting part is provided with an opening communicating with the containing cavity. The pressure container is arranged in the containing cavity at a position corresponding to the opening. A high-energy pipeline passes through the opening and impacts on the pressure container. The gas in the pressure container is released due to the impact of the high-energy pipeline, so as to form a reverse force pushing the high-energy pipeline from the bottom end to the top end of the limiting part. Moreover, the reverse force pushing the high-energy pipeline is equal to the impact force of the pipeline. When the high-energy pipeline is thrown, the impact force is applied to the pressure container through the opening. The gas in the pressure container is released, and the pressure of the released gas can offset the impact force of the high-energy pipeline, thereby improving the use safety of the gas anti-throwing structure.

Description

Technical Field

[0001] The present invention relates to the technical field of protective devices for high-energy pipelines, and in particular to a gas anti-whiplash structure. Background Art

[0002] Nuclear power plants, conventional power plants, and chemical plants often use numerous pipelines to transport high-pressure, high-velocity fluids. Although these pipelines are designed to withstand high pressures, they can rupture suddenly for various reasons. These high-energy pipeline ruptures can cause the leakage of high-energy fluids, which exert significant lateral forces on the pipelines. Under the action of these forces, the ruptured pipeline acquires high lateral velocities, often causing it to rotate at high speed around a localized deformation zone, a phenomenon known as pipe whipping. Pipe networks in power plants are typically not completely isolated from one another, so a ruptured, whipping pipe could easily strike other pipelines, instruments, or the main building structure, damaging these devices and components. This can exacerbate the severity of the accident and even trigger a chain reaction, leading to the release of radioactive materials and a nuclear safety incident.

[0003] To prevent pipeline whiplash and jet impact, which could damage adjacent equipment and structures, existing power plant design phases incorporate measures such as physical isolation or the addition of anti-swing limiters to mitigate the consequences of high-energy pipeline failure. Based on a hypothetical mechanical model of a high-energy pipeline breach, calculation methods for jet force, jet kinetic energy, and characteristic length are available. Furthermore, the direction and force of the whiplash after a ruptured high-energy pipeline can be calculated.

[0004] In existing technologies, protective measures for high-energy pipeline rupture include installing anti-swing limiters and anti-swing brackets. Most of the above two parts are made of steel products. The potential energy stored in the elastic deformation part of the steel will cause the pipeline to rebound, resulting in a secondary impact and aggravating the severity of the accident. Summary of the Invention

[0005] In view of this, the present invention aims to propose a gas anti-swing structure to balance and offset the impact force of the high-energy pipeline, so that the high-energy pipeline does not rebound secondary while offsetting the impact force, thereby effectively improving safety.

[0006] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0007] A gas anti-swing structure includes a pressure vessel and a limiting part.

[0008] The limiting portion is installed on a fixed base and forms a receiving cavity for receiving the pressure vessel;

[0009] The top end of the limiting portion has an opening communicating with the accommodating cavity;

[0010] The pressure container is arranged in the accommodating cavity at a position corresponding to the opening, the high-energy pipeline impacts on the pressure container through the opening, and the gas in the pressure container is released due to the impact of the high-energy pipeline to form a counteracting force pushing the high-energy pipeline from the bottom end to the top end of the limiting part;

[0011] The counteracting force pushing the high-energy pipeline is equal to the impact force of the pipeline.

[0012] Further, the outlet end of the pressure container is provided with a trigger part, the trigger part is triggered due to the impact of the high-energy pipeline to release the gas in the pressure container.

[0013] Further, the trigger part comprises a trigger block fixedly arranged at the bottom end of the limiting part and a bursting disc arranged at the outlet end of the pressure container.

[0014] Further, an elastic supporting part supporting the pressure container is arranged between the bottom end of the limiting part and the pressure container.

[0015] Further, the top end of the limiting part is further provided with a limiting channel, the limiting channel penetrates the opening in the radial direction;

[0016] The high-energy pipeline is limited in the limiting channel.

[0017] Further, the opening position of the limiting part is further provided with an accommodating part, the limiting channel penetrates the accommodating part and the opening, and the accommodating part is divided into two oppositely arranged arc-shaped plates by the limiting channel.

[0018] Further, the top end of the pressure container is provided with a receiving part receiving the high-energy pipeline.

[0019] Further, the receiving part is configured as an upwardly curved bending plate.

[0020] Further, a plurality of the pressure containers are arranged at the lower end of the bending plate.

[0021] Further, the pressure container is specifically a CO2 pressure tank.

[0022] Compared with the prior art, the application has the following advantages:

[0023] The gas anti-impact structure disclosed by the application, by arranging the pressure container and the limiting part, when the high-energy pipeline impacts on the pressure container, the outlet of the pressure container is released due to the impact to form a counteracting force of the gas pressure in the accommodating cavity to offset the impact force of the high-energy pipeline, the impact force of the gas can avoid hard collision, thereby improving the use safety of the gas anti-impact structure.

[0024] The present invention sets a trigger part at the outlet of the pressure vessel. The trigger part has a trigger block and a bursting disc, so that the bursting disc ruptures after the pressure vessel is impacted, thereby releasing the gas in the pressure vessel to form a reaction force that offsets the high-energy pipeline.

[0025] The present invention provides a containment portion, which is divided into two curved plates by a limiting channel. The openings of the two curved plates are arranged opposite each other to contain the high-energy pipe when it bounces up, thereby limiting the high-energy pipe from bouncing down within the space enclosed by the two curved plates and the limiting channel. This effectively prevents the high-energy pipe from rebounding and causing a secondary rebound, improving safety in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0027] Figure 1 This is a schematic structural diagram of the gas anti-swing structure according to the first embodiment of the present invention;

[0028] Figure 2 This is a schematic structural diagram of the curved plate in the gas anti-swing structure according to the first embodiment of the present invention;

[0029] Figure 3 This is a structural diagram of the limiting portion and the containing portion according to the first embodiment of the present invention;

[0030] Figure 4 This is a schematic structural diagram of a gas anti-swing structure according to a second embodiment of the present invention;

[0031] Figure 5 Schematic diagram of the structure of the bent plate of the second embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1. Limiting portion; 101. Accommodating cavity; 102. Opening; 103. Limiting channel;

[0034] 2. Pressure vessel; 3. High-energy pipeline; 4. Trigger block; 5. Bursting disc; 6. Elastic support part; 7. Enclosing part; 8. Bend plate; 801. Air flow groove. DETAILED DESCRIPTION

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0036] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," and "back" and other terms indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] Furthermore, in the description of the present invention, unless otherwise expressly defined, the terms "mounted," "connected," "connect," and "connector" should be interpreted broadly. For example, these terms may refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will appreciate the specific meanings of these terms in the present invention based on the specific circumstances.

[0038] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0039] Example 1

[0040] This embodiment relates to a gas anti-swing structure, which includes a pressure vessel 2 and a limiting portion 1. The limiting portion 1 is mounted on a fixed foundation and defines a chamber 101 for accommodating the pressure vessel 2. The limiting portion 1 has an opening 102 at its top end that communicates with the chamber 101.

[0041] The pressure vessel 2 is positioned within the accommodating chamber 101 at a position corresponding to the opening 102. The high-energy pipe 3 passes through the opening 102 and impacts the pressure vessel 2. The gas within the pressure vessel 2 is released by the impact of the high-energy pipe 3, generating a reverse force that pushes the high-energy pipe 3 from the bottom end to the top end of the limiting portion 1. Furthermore, the reverse force pushing the high-energy pipe 3 is equal to the impact force on the pipe.

[0042] The gas anti-swing structure of this embodiment is provided with a limiter 1 and a pressure vessel 2. When the high-energy pipe 3 is whipped, the high-energy pipe 3 passes through the opening 102 and applies an impact force to the pressure vessel 2, causing the gas in the pressure vessel 2 to be released and expanded. The released gas passes through the accommodating cavity 101 and acts upward on the pressure vessel 2 and the high-energy pipe 3. The ejection force of the ejected medium in the ruptured high-energy pipe 3 forms an impact force on the high-energy pipe 3. The released gas pressure can offset the impact force of the high-energy pipe 3, thereby preventing the high-energy pipe 3 from rebounding, effectively avoiding the secondary collision phenomenon in the prior art, and improving the safety of the gas anti-swing structure.

[0043] It should be noted that the gas pressure within the pressure vessel 2 of this embodiment is set based on the ejection force of the ejection medium within the aforementioned high-energy pipeline 3. As mentioned above, the reverse force pushing the high-energy pipeline 3 is equal to the impact force of the pipeline. Moreover, the ejection force of the ejection medium from the high-energy pipeline 3 will continue for a period of time, causing the high-energy pipeline 3 to continuously impact. During this period, the gas released from the pressure vessel 2 will continue to act on the high-energy pipeline 3 until the ejection of the ejection medium is completed and the gas within the pressure vessel 2 is also released, causing the high-energy pipeline 3 to bounce off in a small area and not to escape from the limiting portion 1.

[0044] Based on the above design concept, an exemplary structure of the gas anti-swing structure of this embodiment is as follows Figure 1 As shown, the pressure vessel 2 in the gas anti-swing structure of this embodiment is specifically a CO2 pressure tank. This absorbs heat when it collides with the high-energy pipeline 3, reducing frictional heat energy from the impact. Of course, the pressure vessel 2 can also be filled with other gases with cooling effects or a mixture of different gas components.

[0045] As described above, the other anti-swing mechanism of this embodiment includes a stopper 1, which is specifically constructed as a cylindrical structure. The accommodating cavity 101 formed within the stopper 1 has a certain clearance from the outer shape of the CO2 pressure tank, which facilitates the flow of CO2 within the pressure tank. The opening 102 above the stopper 1 is a circular through-hole that communicates with the accommodating cavity 101 below. When the CO2 gas within the pressure vessel 2 is released by impact, it can flow out of the circular through-hole, thereby offsetting the swing force on the high-energy pipeline 3.

[0046] In addition, the outlet end of the pressure vessel 2 of this embodiment is provided with a trigger portion, which is triggered by the impact of the high-energy pipe 3 to release the gas in the pressure vessel 2. Specifically, as a preferred embodiment, the trigger portion of this embodiment includes a trigger block 4 fixed to the bottom end of the limiter 1 and a bursting disc 5 provided at the outlet end of the pressure vessel 2. Figure 1 As shown, the trigger block 4 of this embodiment is a frustum structure, wherein the larger frustum is fixedly connected to the fixed base, and the smaller frustum faces the outlet end of the pressure vessel 2 .

[0047] like Figure 1 As shown, the limiting portion 1 of this embodiment is specifically a cover, the accommodating cavity 101 is provided on a fixed foundation, and the corresponding trigger block 4 is also connected to the fixed foundation. Of course, in other embodiments, a bottom plate can be provided at the bottom end of the limiting portion 1, so that the limiting portion 1 and the pressure vessel 2 become an integral whole and are then mounted on the fixed foundation.

[0048] In addition, in other embodiments, the triggering portion can also be a push-type pressure relief valve provided at the outlet end of the pressure vessel 2, and its specific structure can refer to the prior art. The push-type pressure relief valve can also have a pressure relief effect on the gas in the pressure vessel 2.

[0049] Still Figure 1 As shown, the outlet end of the pressure vessel 2 of this embodiment is equipped with a bursting disc 5. The specific structure of this bursting disc 5 is similar to that of bursting discs 5 installed in conventional containers. It explodes at a specified pressure, thereby relieving the pressure in the pressure vessel 2. When the whipping force of the high-energy pipeline 3 acts on the pressure vessel 2, the pressure vessel 2 is squeezed downward, and the trigger block 4 destroys the bursting disc 5, thereby relieving the pressure in the pressure vessel 2.

[0050] In addition, in order to support the pressure vessel 2, an elastic support portion 6 for supporting the pressure vessel 2 is provided between the bottom end of the limiting portion 1 and the pressure vessel 2 in this embodiment. Figure 1 and Figure 2 As shown, the elastic support portion 6 of this embodiment is specifically an elastic compression spring disposed between the pressure vessel 2 and the fixed foundation. One end of the elastic compression spring is fixed to the pressure vessel 2. When the gas anti-swinging structure is not subjected to the swinging force of the high-energy pipeline 3, the elastic compression spring is in a compressed state, providing support for the pressure vessel 2 and positioning the pressure vessel 2 close to the opening 102 of the limiting portion 1. This supports the formation of a gas flow space between the pressure vessel 2 and the fixed foundation, thereby facilitating the flow of gas within the pressure vessel 2 after degassing, as described below.

[0051] When the impact force of the high-energy pipeline 3 acts on the pressure vessel 2, the pressure vessel 2 further compresses the compression spring. When the bursting disc 5 explodes, the gas in the pressure vessel 2 is released. The upward impact force of the gas and the reaction force of the compression spring jointly push the pressure vessel 2 toward the direction close to the high-energy pipeline 3. The joint reaction force of the gas and the pressure vessel 2 buffers and offsets the impact force of the high-energy pipeline 3.

[0052] In addition, in order to facilitate the broken high-energy pipe 3 to be kept above the limiting part 1, a limiting channel 103 is further provided at the top of the limiting part 1 in this embodiment. The limiting channel 103 radially penetrates the upper opening 102; the high-energy pipe 3 is confined within the limiting channel 103. As a specific embodiment, Figure 1 As shown, the limiting channel 103 of this embodiment is formed as an arc cavity penetrating the limiting portion 1. The arc cavity has an arc surface with an upward opening 102 formed at the top of the limiting portion 1. The arc surface receives the broken high-energy pipe 3, allowing the high-energy pipe 3 to bounce or roll within the range of the arc surface, thereby preventing the high-energy pipe 3 from escaping the limiting portion 1. The curvature of the arc surface can be set according to the degree of bounce of the high-energy pipe 3.

[0053] It should be noted that in this embodiment, to improve the use effect, when not impacted by the high-energy pipe 3, the top of the pressure vessel 2 of this embodiment is higher than the arc bottom of the limiting channel 103. Of course, in other embodiments, the top of the pressure vessel 2 can also be made lower than the arc bottom of the limiting channel 103. When the high-energy pipe 3 is impacted, its end can penetrate deeply through the opening 102 and enter the accommodating cavity 101, thereby impacting the pressure vessel 2.

[0054] In order to further limit the position of the high-energy pipeline 3, the position of the opening 102 of the limiting portion 1 of this embodiment is further provided with an enclosing portion 7, and a limiting channel 103 passes through the enclosing portion 7 and the opening 102. The enclosing portion 7 is divided into two oppositely arranged arc-shaped plates by the limiting channel 103. As a specific implementation of this embodiment, Figure 2 and Figure 3 As shown, the containing portion 7 provided in the opening 102 of the limiting portion 1 is specifically a spherical ring, and its upper portion extends upward and protrudes from the upper surface of the limiting portion 1. In addition, the lower portion of the limiting channel 103 extends into the accommodating cavity 101 to near the top of the pressure vessel 2.

[0055] In this embodiment, the containing portion 7 and the limiting portion 1 are integrally formed. Of course, in other embodiments, the arc-shaped plate can be made separately and fixedly connected to the limiting portion 1 by bolts.

[0056] In terms of specific structure, Figure 2 and Figure 3 As shown, the containment portion 7 of this embodiment is divided into two curved plates by a limiting channel 103. The openings 102 of the two curved plates are arranged opposite each other to contain the high-energy pipe 3 when it bounces up, limiting its ability to fall within the space enclosed by the two curved plates and the limiting channel 103. This effectively prevents the high-energy pipe 3 from rebounding and causing a secondary rebound, improving safety. To accommodate the limiting channel 103, the outer shape of the pressure vessel 2 can be manufactured to conform to the aforementioned curved plates.

[0057] The gas anti-swing structure of this embodiment disposes a pressure vessel 2 within the accommodating cavity 101 of the limiting portion 1. When the high-energy pipe 3 ruptures and swings, the high-energy pipe 3 passes through the opening 102 of the limiting portion 1 and exerts its impact force on the pressure vessel 2. The pressure vessel 2 then releases gas, generating a force from the bottom end to the top end of the limiting portion 1, which offsets the impact force on the high-energy pipe 3. This prevents the high-energy pipe 3 from rebounding, ensuring the safety of the gas anti-swing structure.

[0058] Example 2

[0059] This embodiment relates to a gas anti-swing structure, in which the pressure vessel 2 of the gas anti-swing structure is provided with a receiving portion for receiving the high-energy pipeline 3 at the top, and the receiving portion is provided in the accommodating cavity 101. As a specific implementation of this embodiment, Figure 4 As shown, in this embodiment, a receiving portion is provided so that the impact force of the high-energy pipeline 3 is transferred to the pressure vessel 2 through the receiving portion, thereby providing certain protection for the pressure vessel 2.

[0060] Furthermore, the receiving portion of this embodiment is constructed as an upwardly curved plate 8, and the arc bottom of the curved plate 8 is arranged corresponding to the center of the opening 102. Figure 4 As shown, the bent plate 8 of this embodiment is specifically made of steel or stainless steel. In this embodiment, the bent plate 8 is fixed to the pressure vessel 2 below it. It is constructed as a plate-like structure with an arcuate spherical surface. When the high-energy pipe 3 is swung, it impacts the bent plate 8 through the opening 102 of the stopper 1. Because the bottom of the curved plate 8 is located at the center of the opening 102, the force of the downward-impacting high-energy pipe 3 is applied at the bottom of the curved plate 8, causing the upward-bending bent plate 8 to bend, thereby forming a buffer and protecting the pressure vessel 2 below.

[0061] In addition, in this embodiment, a plurality of pressure vessels 2 are spaced apart and arranged at the lower end of the bent plate 8. In terms of specific structure, Figure 4 As shown, this embodiment is provided with three pressure vessels 2, spaced apart at the center and both ends of the bent plate 8. With this arrangement, when the high-energy pipeline 3 exerts a whipping force on the bent plate 8, the bent plate 8 as a whole moves downward, triggering the triggering parts of the three pressure vessels 2. The gas in the three pressure vessels 2 is released, pushing the bent plate 8 upward, causing the bent plate 8 to act in the opposite direction on the high-energy pipeline 3.

[0062] In addition, the pressure vessels 2 at both ends of the bent plate 8 have an upward pulling force due to the bending of the bent plate 8. This pulling force causes the pressure vessels 2 on both sides to release gas later than the pressure vessel 2 in the middle, so as to form a continuous effect of continuous injection on the high-energy pipeline 3. The pressure of the gas in different pressure vessels 2 can be adaptively adjusted according to the impact force of the high-energy pipeline 3 in different injection stages, thereby achieving an effect of adjustable offsetting force, so as to further stabilize the high-energy pipeline 3 and improve the use effect.

[0063] In addition, in order to facilitate the released gas in the pressure vessel 2 to act on the high energy pipeline 3, as shown in FIG. Figure 5 As shown, the bent plate 8 of this embodiment is provided with a penetrating air flow groove 801 , through which part of the gas can quickly act on the high-energy pipeline 3 to form a buffering effect on the impact of the high-energy pipeline 3 .

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A gas anti-swing structure, characterized by: It comprises a pressure container (2) and a limiting portion (1), The limiting portion (1) is installed on a fixed foundation and forms a receiving cavity (101) for receiving the pressure container (2); The top end of the limiting portion (1) has an opening (102) communicating with the accommodating cavity (101); The pressure container (2) is arranged at a position corresponding to the opening (102) in the accommodating cavity (101); the high-energy pipe (3) passes through the opening (102) and impacts the pressure container (2); and the gas in the pressure container (2) is released due to the impact of the high-energy pipe (3), thereby forming a reverse force that pushes the high-energy pipe (3) from the bottom end of the limiting portion (1) to the top end; The reverse force of pushing the high-energy pipeline (3) is equal to the impact force of the pipeline; The outlet end of the pressure vessel (2) is provided with a trigger portion, which is triggered by the impact of the high-energy pipeline (3) to release the gas in the pressure vessel (2), and the trigger portion includes a trigger block (4) fixed on the fixed base and a bursting disc (5) provided at the outlet end of the pressure vessel (2).

2. The gas anti-swing structure according to claim 1, characterized in that: An elastic support portion (6) for supporting the pressure container (2) is provided between the bottom end of the limiting portion (1) and the pressure container (2).

3. The gas anti-swing structure according to claim 1, characterized in that: A limiting channel (103) is further provided at the top end of the limiting portion (1), and the limiting channel (103) radially penetrates the opening (102); The high-energy pipeline (3) is confined within the limiting channel (103).

4. The gas anti-swing structure according to claim 3, characterized in that: An accommodating portion (7) is further provided at the opening (102) of the limiting portion (1), the limiting channel (103) passes through the accommodating portion (7) and the opening (102), and the accommodating portion (7) is divided into two arc-shaped plates arranged opposite to each other by the limiting channel (103).

5. The gas anti-swing structure according to any one of claims 1 to 4, characterized in that: The top end of the pressure container (2) is provided with a receiving portion for receiving the high-energy pipeline (3), and the receiving portion is arranged in the accommodating cavity (101).

6. The gas anti-swing structure according to claim 5, characterized in that: The receiving portion is constructed as a bent plate (8) that bends upward, and the arc bottom of the bent plate (8) is arranged corresponding to the center of the opening (102).

7. The gas anti-swing structure according to claim 6, characterized in that: A plurality of the pressure containers (2) are arranged at intervals at the lower end of the bent plate (8).

8. The gas anti-swing structure according to claim 1, characterized in that: The pressure container (2) is a CO2 pressure tank.

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