Pipe spring hanger

Abstract

The application provides a pipeline spring support hanger, which comprises a force transmission structure, a pipe clamp, a clamp, a spring assembly and a fixing assembly. The upper end of the force transmission structure is provided with a first limiting disc and a second limiting disc. The lower end of the force transmission structure is designed as a spherical structure for being inserted into a spherical groove of the clamp. The pipe clamp is connected with the clamp. The fixing assembly comprises an outer shell and an internal fixing assembly. The outer shell is wrapped outside the internal fixing assembly and the spring assembly. The second limiting disc is clamped in the internal fixing assembly. The spring assembly comprises a main spring and a small spring assembly. The lower end of the small spring assembly is connected with the first limiting disc, and the upper end of the small spring assembly is connected with the inner wall of the upper end of the outer shell. The main spring is connected between the inner wall of the upper end and the inner wall of the lower end of the internal fixing assembly. The main spring is sleeved outside the small spring assembly. The application solves the technical problem that the existing pipeline spring support hanger performs poorly when responding to sudden large vibration, which may cause damage to the spring structure, by means of a multi-stage spring structure design.

Description

Technical Field

[0001] The present application belongs to the technical field of pipeline supports and hangers, and specifically relates to a pipeline spring support hanger. Background Art

[0002] Spring supports and hangers are widely used in nuclear power plant piping systems to absorb thermal expansion and contraction, as well as mechanical vibration, during operation, preventing structural damage due to stress concentration. Currently, commonly used spring supports and hangers have a simple structure, relying primarily on a single spring to absorb vibration. They perform poorly with sudden, large vibrations, potentially damaging the spring structure and posing a safety hazard to nuclear power plants. Summary of the Invention

[0003] In view of this, the present application provides a pipe spring support hanger, which effectively realizes vibration graded buffering through a multi-stage spring structure design and has a reliable structure, so as to solve the technical problem that the existing pipe spring support hanger mainly relies on a single spring to absorb vibration, resulting in poor performance when responding to sudden large vibrations, which may cause damage to the spring structure and thus cause safety hazards in nuclear power plants.

[0004] The present application provides a pipe spring hanger, comprising a force transmission structure, a pipe clamp, a clamp, a spring assembly, and a fixing assembly for securing the force transmission structure and the spring assembly. The upper end of the force transmission structure is provided with a first limit plate and a second limit plate, spaced parallel to each other and spaced a predetermined distance apart, from top to bottom. The lower end of the force transmission structure is designed as a spherical structure, which is inserted into a spherical groove of the clamp. The pipe clamp is connected to the clamp and is fixedly connected to the outer wall of the pipe. The fixing assembly includes an outer shell and an inner fixing assembly. The outer shell wraps around the outer sides of the inner fixing assembly and the spring assembly. The second limit plate is clamped within the inner fixing assembly. The spring assembly includes a main spring and a small spring assembly. The lower end of the small spring assembly is connected to the surface of the first limit plate facing away from the second limit plate, and the upper end of the small spring assembly is connected to the inner wall of the upper end of the outer shell. The main spring is connected between the inner wall of the upper end and the inner wall of the lower end of the inner fixing assembly. The main spring is sleeved around the outer side of the small spring assembly.

[0005] In a specific embodiment of the present application, the internal fixing assembly includes a lower fixing assembly, a middle fixing assembly, at least two screw rods and an upper fixing assembly. The upper and lower ends of the screw rod are provided with threads, and the screw rod is respectively installed with the upper fixing assembly and the middle fixing assembly through the threads at the upper and lower ends. The main spring is connected between the upper fixing assembly and the middle fixing assembly, and the middle fixing assembly is bolted to the lower fixing assembly to form a stable spring support structure. Each screw rod is provided with a first nut, a second nut, a third nut, a fourth nut and a fifth nut. The first nut and the second nut are spaced apart on the side of the upper fixing assembly away from the middle fixing assembly. The upper fixing assembly is located between the second nut and the third nut. The middle fixing assembly and the lower fixing assembly are both located between the fourth nut and the fifth nut. The outer shell is connected to the screw rod through the first nut and the second nut.

[0006] In a specific embodiment of the present application, the middle rod of the screw rod is a polished rod segment.

[0007] In a specific embodiment of the present application, the middle rod of the screw is smooth and cylindrical.

[0008] In a specific embodiment of the present application, the second limiting plate is connected to the lower fixing assembly, which is fixedly connected to the middle fixing assembly. The middle fixing assembly is provided with a tray structure for supporting the lower end of the main spring, and the upper fixing assembly is connected to the upper end of the main spring.

[0009] In one embodiment of the present application, the small spring assembly includes a plurality of evenly distributed small springs. The inner wall of the upper end of the housing is provided with a plurality of symmetrical first semicircular protrusions. A surface of the first limiting plate facing away from the second limiting plate is provided with a plurality of second semicircular protrusions corresponding to the plurality of first semicircular protrusions. The upper ends of the small springs are connected to the first semicircular protrusions, and the lower ends of the small springs are connected to the corresponding second semicircular protrusions.

[0010] In a specific embodiment of the present application, the number of the plurality of small springs is 4.

[0011] In a specific embodiment of the present application, the housing is a cylindrical protective structure.

[0012] In a specific embodiment of the present application, the first limiting plate and the second limiting plate are both circular plates.

[0013] In a specific embodiment of the present application, the clamp and the pipe clamp are fixedly connected to the outer wall of the pipe by bolts.

[0014] The beneficial effect of the technical solution of the present application is that: by setting a spring assembly including a main spring and a small spring assembly, the main spring is sleeved on the outside of the small spring assembly, and the force transmission structure and the fixed assembly are designed to cooperate with the spring assembly, so that the two-stage spring (main spring and small spring assembly) series structure can achieve graded vibration reduction, and the small spring assembly can absorb daily slight vibrations. When the vibration amplitude exceeds the deformation range of the small spring assembly, the main spring can replace the small spring assembly to resist abnormal or severe vibrations. By setting the main spring and the small spring assembly to work together, the pipeline spring support hanger can still provide reliable vibration absorption capacity under abnormal working conditions or severe pipeline vibration, avoiding the single spring from being broken and failing due to excessive force, and improving the emergency performance of the pipeline spring support hanger. In addition, by designing the lower end of the force transmission structure as a spherical structure and inserting the spherical structure into the spherical groove of the fixture, a ball hinge connection that can rotate in multiple directions can be formed, so that the spherical design at the lower end of the force transmission structure allows for multi-directional rotation, so that the spherical surface can slide and rotate freely when the pipeline vibrates, thereby absorbing vibrations in different directions to achieve effective vibration decomposition, offset part of the horizontal vibration, reduce local stress concentration in the pipeline or equipment, and facilitate the swing of the pipeline within a certain angle. In addition, the outer shell not only protects the spring assembly, but also ensures the stability of the spring working environment, and prevents external pollution and dust from interfering with the normal operation of the spring. In addition, the structural design of the pipeline spring support is simple and compact, suitable for pipelines of different specifications and various complex environmental requirements, and is particularly suitable for use in critical safety facilities such as nuclear power plants. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shown is a three-dimensional schematic diagram of a pipeline spring support and hanger provided in one embodiment of the present application.

[0016] Figure 2 Shown is a schematic diagram of the partial structure of a pipe spring support and hanger provided in one embodiment of the present application.

[0017] Figure 3 Shown is a structural schematic diagram of a force transmission structure in a pipeline spring support and hanger provided in one embodiment of the present application.

[0018] Figure 4 Shown is a schematic cross-sectional view of a pipe spring support and hanger provided in one embodiment of the present application.

[0019] Figure 5 Shown is an enlarged structural schematic diagram of a small spring assembly in a pipeline spring support and hanger provided in one embodiment of the present application.

[0020] In the figure, there are the first nut 1, the second nut 2, the third nut 3, the fourth nut 4, the fifth nut 5, the force transmission structure 6, the first limiting plate 6a, the second limiting plate 6b, the spherical structure 6c, the main spring 7, the small spring assembly 8, the pipe clamp 9, the clamp 10, the lower fixing assembly 11, the middle fixing assembly 12, the outer shell 13, the screw 14, and the upper fixing assembly 15. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0022] At least one embodiment of the present application provides a pipe spring support and hanger, which can be used to support and reduce vibration of pipes in nuclear power plants. Figures 1 to 5 The pipe spring hanger includes a force transmission structure 6, a pipe clamp 9, a clamp 10, a spring assembly, and a fixing assembly for securing the force transmission structure 6 and the spring assembly. The upper end of the force transmission structure 6 is provided with a first limit plate 6a and a second limit plate 6b, spaced a preset distance apart and parallel to each other, from top to bottom. The lower end of the force transmission structure 6 is designed as a spherical structure 6c, which is inserted into the spherical groove of the clamp 10. The pipe clamp 9 is connected to the clamp 10 and is fixedly connected to the outer wall of the pipe. The fixing assembly includes an outer shell 13 and an internal fixing assembly. The outer shell 13 wraps around the outer sides of the internal fixing assembly and the spring assembly. The spring assembly includes a main spring 7 and a small spring assembly 8. The lower end of the small spring assembly 8 is connected to the surface of the first limit plate 6a facing away from the second limit plate 6b, and the upper end of the small spring assembly 8 is connected to the inner wall of the upper end of the outer shell 13. The main spring 7 is connected between the upper inner wall and the lower inner wall of the internal fixing assembly. The main spring 7 is sleeved on the outer side of the small spring assembly 8. The second limiting plate 6b is clamped in the internal fixing assembly.

[0023] It should be noted that the force transmission structure 6 is the core force-bearing and force-transmitting component of the pipe spring support. The clamp 10 and pipe clamp 9 can be fixedly connected to the outer wall of the pipe via bolts. The outer contour of the orthographic projection of the first limiting plate 6a on the second limiting plate 6b lies within the outer contour of the second limiting plate 6b.

[0024] According to the technical solution provided in the embodiment of the present application, a spring assembly is provided including a main spring 7 and a small spring assembly 8, the main spring 7 is sleeved on the outside of the small spring assembly 8, and the force transmission structure 6 and the fixing assembly are designed to cooperate with the spring assembly, so that the two-stage spring (main spring 7 and small spring assembly 8) series structure can achieve graded vibration reduction. The small spring assembly 8 can absorb daily slight vibrations. When the vibration amplitude exceeds the deformation range of the small spring assembly 8, the main spring 7 can replace the small spring assembly 8 to resist abnormal or severe vibrations. By setting the main spring 7 and the small spring assembly 8 to work together, the pipeline spring support hanger can still provide reliable vibration absorption capacity under abnormal working conditions or when the pipeline vibrates violently, avoiding the single spring from being broken and failing due to excessive force, thereby improving the emergency performance of the pipeline spring support hanger. In addition, by designing the lower end of the force transmission structure 6 as a spherical structure 6c, and inserting the spherical structure 6c into the spherical groove of the clamp 10, a spherical hinge connection that can rotate in multiple directions can be formed, so that the spherical design at the lower end of the force transmission structure 6 allows for multi-directional rotation, so that the spherical surface can slide and rotate freely when the pipeline vibrates, thereby absorbing vibrations in different directions to achieve effective vibration decomposition, offset part of the horizontal vibration, reduce local stress concentration in the pipeline or equipment, and facilitate the swing of the pipeline within a certain angle. In addition, the shell 13 not only protects the spring assembly, but also ensures the stability of the spring working environment, and prevents external pollution and dust from interfering with the normal operation of the spring. In addition, the structural design of the pipeline spring support is simple and compact, suitable for pipelines of different specifications and various complex environmental requirements, and is particularly suitable for use in key safety facilities such as nuclear power plants.

[0025] In at least one embodiment of the present application, Figure 1 、 Figure 3 and Figure 4 The internal fixing assembly includes a lower fixing assembly 11, a middle fixing assembly 12, at least two screw rods 14 and an upper fixing assembly 15. The screw rod 14 is provided with threads at both ends, and the screw rod 14 is respectively installed with the upper fixing assembly 15 and the middle fixing assembly 12 through the threads at both ends. The main spring 7 is connected between the upper fixing assembly 15 and the middle fixing assembly 12, and the middle fixing assembly 12 is bolted to the lower fixing assembly 11 to form a stable spring support structure. Each screw rod 14 is provided with a first nut 1, a second nut 2, a third nut 3, a fourth nut 4 and a fifth nut 5. The first nut 1 and the second nut 2 are spaced apart on the side of the upper fixing assembly 15 away from the middle fixing assembly 12. The upper fixing assembly 15 is located between the second nut 2 and the third nut 3. The middle fixing assembly 12 and the lower fixing assembly 11 are both located between the fourth nut 4 and the fifth nut 5. The outer shell 13 is connected to the screw rod 14 through the first nut 1 and the second nut 2.

[0026] In the embodiment of the present application, by setting a design in which both ends of the screw 14 are threaded and the middle is a bare rod section, it is convenient to precisely adjust the compression range and the initial preload state of the spring assembly, and by the threaded ends of the screw 14 and the nut adjustment design, the upper and lower positions of the spring assembly, the spring working stroke and the initial spring preload can be quickly adjusted, and operation and maintenance are convenient. The small spring assembly 8 can be extended and retracted within a certain range. By adjusting the distance between the second nut 2 and the third nut 3, the deformation range of the small spring assembly 8 can be controlled to ensure that small vibrations can be absorbed in time. In addition, the outer shell 13 is connected to the screw 14 through the first nut 1 and the second nut 2, which is convenient for position adjustment and overall disassembly and maintenance, protecting the internal spring structure from interference from the external environment and ensuring the long-term reliability of the device. Furthermore, in the embodiment of the present application, the outer shell 13 and the force transmission structure 6 are designed to be a connection structure design that is easy to disassemble and maintain.

[0027] The intermediate rod of screw rod 14 can be configured based on actual needs and is not specifically limited in the present embodiment. For example, in at least one embodiment of the present invention, the intermediate rod of screw rod 14 is a polished rod segment. For another example, in at least one embodiment of the present invention, the middle rod of screw rod 14 is a smooth cylindrical shape. This provides screw rod 14 with excellent guidance and stability.

[0028] In at least one embodiment of the present application, the second limiting plate 6b is connected to the lower fixing assembly 11, which is in turn fixedly connected to the middle fixing assembly 12. A tray structure is provided on the middle fixing assembly 12, supporting the lower end of the main spring 7. The upper fixing assembly 15 is connected to the upper end of the main spring 7. Thus, the main spring 7 is positioned between the middle fixing assembly 12 and the upper fixing assembly 15. When pipeline vibration exceeds the operating range of the small spring assembly 8, the main spring 7 further absorbs vibration energy.

[0029] In at least one embodiment of the present application, the small spring assembly 8 includes a plurality of evenly distributed small springs. The upper inner wall of the housing 13 is provided with a plurality of symmetrical first semicircular protrusions. The surface of the first limiting plate 6a facing away from the second limiting plate 6b is provided with a plurality of second semicircular protrusions corresponding to the plurality of first semicircular protrusions. The upper ends of the small springs are connected to the first semicircular protrusions, and the lower ends of the small springs are connected to the corresponding second semicircular protrusions.

[0030] The number of the plurality of small springs can be set according to actual needs, for example, 2, 3, or more, and is not specifically limited in the embodiments of the present application. In at least one embodiment of the present application, the number of the plurality of small springs is 4. In this way, by evenly distributing the 4 small springs, uniform transmission of the spring force can be achieved.

[0031] In this embodiment, a first semicircular protrusion on the upper inner wall of the housing 13 is symmetrically positioned with a second semicircular protrusion on the first limiting plate 6a, thereby achieving secure positioning and uniform force distribution for the spring assembly. When the pipeline vibrates slightly, the multiple small springs first deform to absorb the vibration energy. When the vibration amplitude exceeds the deformation range of the small springs and the multiple small springs are fully compressed, the main spring 7 takes over, further absorbing the impact of the severe vibration. In this embodiment, the semicircular protrusions are tightly fitted and fixed to the spring assembly, effectively preventing the spring assembly from falling off or shifting, and enhancing the structural stability and safety.

[0032] In at least one embodiment of the present application, the housing 13 is a cylindrical protective structure.

[0033] In at least one embodiment of the present application, the first limiting plate 6a and the second limiting plate 6b are both circular plates.

[0034] In at least one embodiment of the present application, the clamp 10 and the pipe clamp 9 are fixedly connected to the outer wall of the pipe by bolts. Thus, when the pipe vibrates, the spherical groove in the clamp 10 cooperates with the spherical component at the lower end of the force transmission structure 6, achieving multi-directional rotation and dispersed transmission of vibration energy, effectively reducing local stress concentration.

[0035] Below, the working process of a pipe spring support and hanger provided in an embodiment of the present application is described in detail with examples in combination with specific embodiments.

[0036] When in use, the pipe clamp 9 is clamped and fixed to the outer wall of the pipe and fastened by bolt connection. The clamp 10 is rigidly connected to the pipe clamp 9. The clamp 10 has a spherical groove inside, and the spherical body at the lower end of the force transmission structure 6 is placed in the spherical groove to achieve a free rotation connection.

[0037] When the pipeline vibrates due to equipment operation, the vibration is first transmitted to the pipe clamp 9, then to the clamp 10, and further transmitted through the clamp 10 to the spherical structure 6c at the lower end of the force transmission structure 6. The spherical structure 6c forms a spherical joint with the spherical groove of the clamp 10, which allows multi-directional rotation. This allows for partial rotational decomposition of horizontal vibration, effectively reducing the horizontal vibration of the pipeline and avoiding excessive stress concentration.

[0038] The vertical vibration of the pipeline is transmitted upward through the force transmission structure 6. When the vibration is small, the force generated by the vibration will first be transmitted to the small spring assembly 8, which will deform and gradually buffer the vibration, thereby utilizing the small spring assembly 8 to first compress and deform to absorb the initial slight vibration.

[0039] When the vibration amplitude is large, the small spring assembly 8 is compressed to its maximum deformation, exceeding its allowable elastic deformation range and causing the spring to fail or break. At this point, the upper fixing assembly 15 begins to contact the third nut 3 (or the first limit plate 6a of the force transmission structure 6 contacts the upper fixing assembly 15), causing the excessive force to be transmitted downward through the force transmission structure 6 to the lower fixing assembly 11 and the middle fixing assembly 12, thereby causing the main spring 7 to compress and deform. The main spring 7 further compresses and deforms, absorbing even greater vibration energy and effectively ensuring safe and reliable support for the pipeline.

[0040] In summary, the pipe spring support and hanger has a graded vibration reduction function. It effectively absorbs and alleviates slight and severe vibrations through a multi-stage spring structure, ensuring the safe and stable operation of the equipment and adapting to the use requirements of the complex environment of nuclear power plants. In addition, the pipe spring support and hanger is characterized by a compact structure, easy installation, and simple maintenance. It realizes multi-stage absorption and effective control of vibrations, and can play a significant role in the nuclear power plant environment where pipeline vibration is severe, greatly improving the safe operation stability of nuclear power plant equipment and reducing maintenance frequency and risks. In addition, the series-type graded vibration reduction structure design of the main spring 7 and the small spring assembly 8 enables this support and hanger to not only effectively cope with daily slight pipeline vibrations, but also effectively prevent the pipeline from breaking or being damaged due to severe vibrations under abnormal working conditions or emergencies. Furthermore, the upper and lower threaded structures of the designed screw 14 cooperate with the nut to accurately adjust the initial height position of each component, set a reasonable preload force and spring working state, and adapt to different pipelines and vibration requirements.

[0041] It should be noted that the combination of the various technical features in the embodiments of the present application is not limited to the combination described in the embodiments of the present application or the combination described in the specific embodiments. All technical features described in the present application can be freely combined or combined in any way unless there is a contradiction between them.

[0042] As used in this application and the claims, unless the context clearly indicates otherwise, the words "a," "an," and / or "the" are not intended to refer to the singular but may include the plural. Generally speaking, the term "comprising" only indicates the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements.

[0043] The terms "first," "second," etc. are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features indicated. Thus, a feature specified as "first," "second," etc. may explicitly or implicitly include one or more of the features.

[0044] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A pipe spring support hanger, characterized in that: It includes a force transmission structure, a pipe clamp, a clamp, a spring assembly and a fixing assembly for fixing the force transmission structure and the spring assembly. The upper end of the force transmission structure is provided with a first limit plate and a second limit plate which are parallel and spaced by a preset distance from top to bottom. The lower end of the force transmission structure is designed as a spherical structure, which is inserted into the spherical groove of the clamp. The pipe clamp is connected to the clamp and is used to be fixedly connected to the outer wall of the pipe. The fixing assembly includes an outer shell and an internal fixing assembly, the outer shell wraps around the outer side of the internal fixing assembly and the spring assembly, the second limit plate is clamped in the internal fixing assembly, the internal fixing assembly includes a lower fixing assembly, a middle fixing assembly, at least two screws and an upper fixing assembly, the upper and lower ends of the screw are provided with threads, the screw is respectively installed with the upper and lower fixing assembly and the middle fixing assembly through the threads at the upper and lower ends, the main spring is connected between the upper fixing assembly and the middle fixing assembly, the middle fixing assembly is bolted to the lower fixing assembly to form a stable spring support structure, each screw is provided with a first nut, a second nut, a third nut, a fourth nut and a fifth nut, the first nut and the second nut are spaced apart on the side of the upper fixing assembly away from the middle fixing assembly, the upper fixing assembly is located between the second nut and the third nut, the middle fixing assembly and the lower fixing assembly are both located between the fourth nut and the fifth nut, the outer shell is connected to the screw through the first nut and the second nut, the second limit plate is connected to the lower fixing assembly, the lower fixing assembly is fixedly connected to the middle fixing assembly, a tray structure is provided on the middle fixing assembly, the tray structure is used to support the lower end of the main spring, and the upper fixing assembly is connected to the upper end of the main spring; The spring assembly includes a main spring and a small spring assembly. The lower end of the small spring assembly is connected to the surface of the first limit plate facing away from the second limit plate. The upper end of the small spring assembly is connected to the inner wall of the upper end of the outer shell. The main spring is connected between the inner wall of the upper end and the inner wall of the lower end of the internal fixing assembly. The main spring is sleeved on the outside of the small spring assembly.

2. A pipe spring support and hanger according to claim 1, characterized in that: The middle rod of the screw is the polished rod section.

3. The pipeline spring support and hanger according to claim 1, characterized in that: The middle rod of the screw is smooth and cylindrical.

4. A pipe spring support and hanger according to any one of claims 1 to 3, characterized in that: The small spring assembly includes multiple evenly distributed small springs, the inner wall of the upper end of the shell is provided with multiple symmetrical first semicircular protrusions, the surface of the first limiting plate facing away from the second limiting plate is provided with multiple second semicircular protrusions corresponding to the multiple first semicircular protrusions one by one, the upper end of the small spring is connected to the first semicircular protrusion, and the lower end of the small spring is connected to the corresponding second semicircular protrusion.

5. A pipe spring support and hanger according to claim 4, characterized in that: The number of the plurality of small springs is four.

6. A pipe spring support and hanger according to any one of claims 1 to 3, characterized in that: The outer shell is a cylindrical protective structure.

7. A pipe spring support and hanger according to any one of claims 1 to 3, characterized in that: The first limiting plate and the second limiting plate are both circular plates.

8. A pipe spring support and hanger according to any one of claims 1 to 3, characterized in that: The clamp and the pipe clamp are fixedly connected to the outer wall of the pipe by bolts.

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