CN219282742U - Nuclear power plant pipeline bracket - Google Patents

Abstract

The utility model relates to the technical field of vibration isolation devices, and discloses a nuclear power plant pipeline bracket. The nuclear power plant pipeline support comprises a pipeline fixing frame, a damper and a vibration isolation frame, wherein the pipeline fixing frame is used for fixing a pipeline, the vibration isolation frame is supported on the ground, the pipeline fixing frame is supported at the upper end of the vibration isolation frame and is elastically connected with the upper end of the vibration isolation frame, the damper is supported on the ground and is arranged at intervals with the vibration isolation frame, and the pipeline fixing frame is in butt joint with the upper end of the damper. The nuclear power plant pipeline bracket can bear dead weight, thermal expansion and mechanical load and weaken the propagation of vibration energy.

Description

Nuclear power plant pipeline bracket

Technical Field

The utility model relates to the technical field of vibration isolation devices, in particular to a nuclear power plant pipeline bracket.

Background

The pipelines in the nuclear power station are quite complex, the size of the pipelines is large, the load is large, the temperature and the pressure of the conveyed fluid are high, the flow rate is high, and in order to ensure the integrity and the usability of the pipelines under special working conditions such as earthquake or accident, the pipelines are usually fixed by adopting rigid supports. When high-speed fluid passes through the pipeline (such as a steam pipeline) rapidly, the pipeline vibration is sometimes caused by the reasons of flow-induced vibration, turbulence and the like, and the pipeline vibration is transmitted to surrounding floor slabs or walls through the rigid support, so that the stability of a factory building structure is influenced, noise in a building is possibly generated to influence the normal office environment of people, or the safe and stable operation of vibration sensitive equipment in the building is influenced. Long-time pipeline vibration also can cause pipeline fatigue damage, reduces the service life of a pipeline bracket, reduces the overall stability of the system, and has potential safety risks. In industry, a method of increasing rigidity constraint of a pipeline and a fixed surface is generally adopted to restrain vibration of the pipeline, but the method cannot eliminate or isolate transmission of vibration energy, and can still transmit the energy of the vibration of the pipeline to surrounding buildings such as floors and walls. In addition, vibration isolation frames are adopted to isolate vibration, and the damping characteristics of materials such as rubber, springs and the like are utilized to isolate vibration, but a single damping material cannot meet the vibration isolation requirement of a high-temperature pipeline, and also cannot meet the special requirements of a high-temperature pipeline and a radiation environment of a nuclear power plant on the mode selection and arrangement of damper vibration isolation components.

Disclosure of Invention

Based on the above, the utility model aims to provide a nuclear power plant pipeline bracket which can bear dead weight, thermal expansion and mechanical load and can weaken the transmission of vibration energy.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a nuclear power plant pipe rack comprising:

the pipeline fixing frame is used for fixing the pipeline;

the vibration isolation frame is supported on the ground, and the pipeline fixing frame is supported at the upper end of the vibration isolation frame and is elastically connected with the upper end of the vibration isolation frame;

and the damper is supported on the ground and is arranged at intervals with the vibration isolation frame, and the pipeline fixing frame is abutted with the upper end of the damper.

As the preferred scheme of nuclear power plant pipeline support, the vibration isolation frame includes base and vibration isolation piece, the lower extreme of base support in ground, the vibration isolation piece sets up the upper end of base with between the pipeline mount, the vibration isolation piece can atress shrink.

As a preferable scheme of the nuclear power plant pipeline bracket, the vibration isolation piece is made of metal rubber.

As the preferred scheme of nuclear power plant pipeline support, the vibration isolation frame still includes vibration isolation piece bottom plate, vibration isolation piece bottom plate detachable connection be in the roof of base, and with the interval between the roof of base is adjustable, vibration isolation piece sets up vibration isolation piece bottom plate with between the pipeline mount.

As the preferred scheme of nuclear power plant pipeline support, the vibration isolation frame still includes the regulating part, the regulating part adjustable and detachable connect in vibration isolation piece bottom plate with the pipeline mount, the regulating part can be adjusted the vibration isolation piece bottom plate with the interval between the pipeline mount.

As the preferred scheme of nuclear power plant pipeline support, offer first connecting hole on the pipeline mount, offered the second connecting hole on the vibration isolation spare bottom plate, the bolt can pass first connecting hole with behind the second connecting hole with first nut threaded connection.

As the preferred scheme of nuclear power plant pipeline support, the third connecting hole has been seted up to the roof of base, the vibration isolation piece bottom plate has been seted up the fourth connecting hole, the screw rod can pass the third connecting hole with fourth connecting hole to with at least four second nut threaded connection, at least two second nut butt in the both sides of the roof of base, at least two second nut butt in the both sides of vibration isolation piece bottom plate.

As the preferred scheme of nuclear power plant's pipeline support, the pipeline mount includes support and pipeline clamp, the leg joint be in the attenuator with the upper end of vibration isolation frame, the pipeline clamp sets up on the support, pipeline clamp can the joint in the pipeline.

As the preferred scheme of nuclear power plant pipeline support, the support includes fixed plate, support piece and strengthening rib, the fixed plate is connected the attenuator with the upper end of vibration isolation frame, support piece sets up on the fixed plate, the pipeline clamp support in support piece, the strengthening rib is connected support piece with between the fixed plate.

As a preferable scheme of the nuclear power plant pipeline bracket, the damper is a hydraulic damper.

The beneficial effects of the utility model are as follows:

the utility model provides a nuclear power plant pipeline bracket, which comprises a pipeline fixing frame, a damper and a vibration isolation frame, wherein the pipeline fixing frame is connected with a pipeline through the pipeline fixing frame, and the vibration isolation frame supports the pipeline fixing frame; meanwhile, when fluid in the pipeline vibrates or vibration disturbance occurs, the damper forms a rigid support on the pipeline, so that the use stability and safety of the pipeline are guaranteed, and when the vibration isolation frame fails, the damper can effectively prevent the pipeline from dislocation. The nuclear power plant pipeline bracket can bear dead weight, thermal expansion and mechanical load and weaken the propagation of vibration energy, so that the influence of pipeline vibration on surrounding environment, personnel life and vibration sensitive equipment is reduced, the use safety and reliability of the pipeline are improved, and the service life of the pipeline is prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following description will briefly explain the drawings needed in the description of the embodiments of the present utility model, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the contents of the embodiments of the present utility model and these drawings without inventive effort for those skilled in the art.

FIG. 1 is a schematic view of a nuclear power plant pipeline bracket according to an embodiment of the present utility model;

FIG. 2 is a side view of a pipe holder provided by an embodiment of the present utility model;

fig. 3 is a top view of a pipe fixing frame according to an embodiment of the present utility model.

In the figure:

1. a pipe fixing frame; 11. a bracket; 111. a fixing plate; 112. a support; 113. reinforcing ribs; 12. a pipe clamp; 121. a first clip structure; 122. a second clip structure; 10. a first connection hole;

2. a vibration isolation frame; 21. a base; 22. vibration isolation members; 23. a vibration isolation member bottom plate; 24. an adjusting member; 25. a screw; 26. a second nut;

3. a damper; 4. a backing plate.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present utility model are shown in the drawings.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

As shown in fig. 1 to 3, the present embodiment provides a nuclear power plant pipe support, which includes a pipe fixing frame 1, a damper 3 and a vibration isolation frame 2, the pipe fixing frame 1 is used for fixing a pipe, the vibration isolation frame 2 is supported on the ground, the pipe fixing frame 1 is supported at the upper end of the vibration isolation frame 2 and is elastically connected with the upper end of the vibration isolation frame 2, the damper 3 is supported on the ground and is arranged at intervals with the vibration isolation frame 2, and the pipe fixing frame 1 is abutted with the upper end of the damper 3. The vibration isolation frame 2 is connected with the pipeline through the pipeline fixing frame 1 and supports the pipeline fixing frame 1, when the pipeline is not subjected to larger impact force, the damper 3 does not form rigid support on the pipeline due to the working characteristic of the damper 3, so that the vibration isolation frame 2 can be used for bearing dead weight and mechanical load, and when the pipeline is subjected to thermal expansion or vibration, the vibration isolation frame 2 can also be used for blocking the transmission of vibration, so that the vibration is prevented from being transmitted to a wall or a floor, the stability of a factory building structure is improved, and the noise is reduced; meanwhile, when fluid in the pipeline vibrates or a vibration shock disturbance occurs, the damper 3 forms a rigid support on the pipeline, so that the use stability and safety of the pipeline are ensured, and when the vibration isolation frame 2 fails, the damper 3 can effectively prevent the pipeline from dislocation. The nuclear power plant pipeline bracket can bear dead weight, thermal expansion and mechanical load and weaken the propagation of vibration energy, so that the influence of pipeline vibration on surrounding environment, personnel life and vibration sensitive equipment is reduced, the use safety and reliability of the pipeline are improved, and the service life of the pipeline is prolonged.

Specifically, as shown in fig. 1, the nuclear power plant pipe support further includes a backing plate 4, the backing plate 4 being located on the ground, and the lower end of the damper 3 being disposed on the backing plate 4. Through setting up backing plate 4 increase attenuator 3 and the area of contact on ground, improve the stability of attenuator 3, attenuator 3 support pipe fixing frame 1, and attenuator 3 slows down the impact force promptly, avoids the pipeline dislocation when vibration isolation frame 2 became invalid. Preferably, the damper 3 is a hydraulic damper, and when a load is applied to the damping system, hydraulic oil therein flows in the two cylinders through small holes in the piston, and part of kinetic energy is absorbed and converted into heat, so that impact fluid vibration and seismic disturbance can be effectively controlled. Because hydraulic dampers are a relatively mature prior art, they are not described in detail herein.

Preferably, two dampers 3 are provided, and the two dampers 3 are respectively located at two sides of the vibration isolation frame 2, namely, two ends of the pipeline fixing frame 1 can respectively abut against one damper 3, so that the vibration damping effect is further improved. Of course, in other embodiments, the number of dampers 3 may be set according to actual requirements, for example, dampers 3 are provided with four, six, etc., specifically according to actual requirements.

Further, as shown in fig. 1, the vibration isolation frame 2 includes a base 21 and a vibration isolation member 22, the lower end of the base 21 is supported on the ground, the vibration isolation member 22 is disposed between the upper end of the base 21 and the pipe fixing frame 1, and the vibration isolation member 22 is capable of being contracted by force. Support vibration isolation piece 22 through base 21 to support pipeline mount 1 through vibration isolation piece 22, make the pipeline take place thermal expansion or when vibrating, vibration isolation frame 2 atress shrink reduces the transmission of vibration, guarantees the stability of pipeline, also can avoid vibration transmission to influence factory building structural stability or produce noise and influence personnel's work life.

Preferably, the vibration isolation member 22 is made of metal rubber, which has the advantages of high damping, high load, adaptation to high and low temperature environments, difficult aging, no creep and the like, has better high temperature resistance, corrosion resistance and radiation resistance, and can be used in nuclear power plants for a long time compared with the traditional vibration isolation materials such as rubber, high polymer materials and the like. The metal rubber has good rigidity characteristics, so that the vibration isolation frame 2 can bear thermal expansion, mechanical load and the like of pipelines and equipment of a nuclear power station, and meanwhile, the large damping characteristics of the metal rubber can isolate the vibration of the pipelines and the equipment and prevent the vibration of the pipelines and the equipment from being transmitted to a wall or a floor slab.

Specifically, the vibration isolation frame 2 further includes a vibration isolation member bottom plate 23, the vibration isolation member bottom plate 23 is detachably connected to the top plate of the base 21, and the distance between the vibration isolation member bottom plate 23 and the top plate of the base 21 is adjustable, and the vibration isolation member 22 is disposed between the vibration isolation member bottom plate 23 and the pipe fixing frame 1. By adjusting the distance between the vibration isolation piece bottom plate 23 and the base 21, the vibration isolation frame 2 can adjust the supporting force of the vibration isolation piece 22 on the pipeline fixing frame 1 according to the factors such as the height or the weight of the pipeline, so as to achieve the effect of counteracting the dead load of the pipeline and equipment.

Illustratively, the top plate of the base 21 is provided with a third connecting hole, the bottom plate 23 of the vibration isolator is provided with a fourth connecting hole, the screw 25 can pass through the third connecting hole and the fourth connecting hole and is in threaded connection with at least four second nuts 26, at least two second nuts are abutted to two sides of the top plate of the base 21, and at least two second nuts are abutted to two sides of the bottom plate 23 of the vibration isolator. Through adjusting the position of the second nut 26 on the screw rod 25, the distance between the top plate of the base 21 and the bottom plate 23 of the vibration isolation member can be adjusted, and the vibration isolation member has the advantages of simple structure, convenient operation and low cost. Of course, in other embodiments, the adjustment of the spacing of the top plate of the base 21 and the isolator bottom plate 23 may be accomplished by other structures, such as by connecting telescoping rods between the top plate of the base 21 and the isolator bottom plate 23.

More specifically, the vibration isolation mount 2 further includes an adjusting member 24, the adjusting member 24 being adjustably and detachably connected to the vibration isolation mount base plate 23 and the pipe fixing mount 1, the adjusting member 24 being capable of adjusting the spacing between the vibration isolation mount base plate 23 and the pipe fixing mount 1. Before the nuclear power plant pipeline bracket is installed, the adjusting piece 24 can be adjusted according to the dead weight of the pipeline and equipment, so that the distance between the vibration isolation piece bottom plate 23 and the pipeline fixing frame 1 is a preset distance, namely, the vibration isolation piece 22 between the vibration isolation piece bottom plate 23 and the pipeline fixing frame 1 is stressed and contracted to a preset degree, the dead weight of the pipeline and equipment is simulated, then the nuclear power plant pipeline bracket is installed on the pipeline, the adjusting piece 24 is detached again, so that no fixed connection structure exists between the vibration isolation piece bottom plate 23 and the pipeline fixing frame 1, namely, the compression load born by the vibration isolation piece 22 counteracts the dead weight of the pipeline and equipment, and at the moment, the vibration isolation frame 2 bears the dead weight of the pipeline and equipment. For example, first, the dead load of the piping and equipment is calculated by software, assuming that the dead load is 10kN, the vibration isolation frame 2 is loaded by the adjusting member 24 to compress the vibration isolation member 22, the applied load is 10kN of the dead load, and the compression amount is caught by the adjusting member 24. After the vibration isolation frame 2 and the pipe fixing frame 1 are installed on the pipe and the equipment, the adjusting piece 24 is detached, the compressive load counteracts the self-weight load of the pipe and the equipment, and the vibration isolation frame 2 supports and bears the self-weight load of the pipe and the equipment. And then the system enters a normal operation condition, the pipeline and equipment generate thermal expansion and mechanical load, at the moment, the vibration isolation piece 22 can continuously compress or release the compression amount, the load of the vibration isolation piece 22 reaches new balance, and the vibration isolation frame 2 bears the load under the normal operation condition. When the pipeline and the equipment vibrate, vibration waves are transmitted to the vibration isolation piece 22 through the pipeline fixing frame 1, and the material characteristics of the vibration isolation piece 22 can well isolate vibration, so that the vibration waves cannot be transmitted to the base of the vibration isolation support 11, and the vibration isolation function is realized. When an earthquake occurs, the pipeline and the equipment are greatly displaced, the damper 3 forms a rigid support for the pipeline fixing frame 1, and the pipeline and the equipment are not damaged under the earthquake load.

Illustratively, the adjusting member 24 includes a bolt and a first nut, the pipe fixing frame 1 is provided with a first connecting hole 10, the vibration isolation member bottom plate 23 is provided with a second connecting hole, and the bolt can pass through the first connecting hole 10 and the second connecting hole and then be in threaded connection with the first nut. The connection and the interval adjustment of the pipeline fixing frame 1 and the vibration isolation piece bottom plate 23 are realized through the threaded matching of the bolts and the first nuts, so that the structure is simple, the operation is convenient, the assembly time of the pipeline bracket of the nuclear power plant is saved, and the assembly efficiency is improved. Of course, in other embodiments, the vibration isolator bottom plate 23 and the pipe holder 1 may be connected by other structures, such as by snap springs and bayonet arrangements.

Still further, as shown in fig. 2 and 3, the pipe fixing frame 1 includes a bracket 11 and a pipe clamp 12, the bracket 11 is connected to the upper ends of the damper 3 and the vibration isolation frame 2, the pipe clamp 12 is provided on the bracket 11, and the pipe clamp 12 can be clamped to a pipe. The support 11 provides supporting and installing functions for the pipeline clamp 12, and the pipeline clamp 12 is matched with the pipeline in a clamping mode, so that the assembly efficiency can be improved, and the assembly time can be saved. Illustratively, the pipe clamp 12 includes a first clamp structure 121 and a second clamp structure 122, the first clamp structure 121 being disposed on the support 11, the second clamp structure 122 being detachably connected to the first clamp structure 121 and forming an annular clamp structure with the first clamp structure 121. Optionally, the first clamp structure 121 and the second clamp structure 122 are both semicircular, when the nuclear power plant pipeline bracket is installed, the first clamp structure 121 is attached to the wall surface of the pipeline, the second clamp structure 122 is attached to the pipeline and then is connected and fixed with the first clamp structure 121, and the second clamp structure 122 is tightly held with the annular clamp structure formed by the first clamp structure 121.

Specifically, the bracket 11 includes a fixing plate 111, a supporting member 112, and a reinforcing rib 113, the fixing plate 111 is connected to the upper ends of the damper 3 and the vibration isolation frame 2, the supporting member 112 is disposed on the fixing plate 111, the pipe clamp 12 is supported to the supporting member 112, and the reinforcing rib 113 is connected between the supporting member 112 and the fixing plate 111. The fixing plate 111 is provided so as to be connected to the vibration isolator bottom plate 23 and the damper 3, and more specifically, the first connection hole 10 is opened on the fixing plate 111. The arrangement of the reinforcing ribs 113 can effectively improve the structural strength and stability of the bracket 11, thereby improving the service stability of the nuclear power plant pipeline bracket. Illustratively, the support 112 includes two support side plates vertically connected to the fixing plate 111, and the pipe clip 12 is disposed at upper ends of the two support side plates, and at least one reinforcing rib 113 is obliquely connected between an upper end of each support side plate and the fixing plate 111. Preferably, three reinforcing ribs 113 are obliquely connected between each supporting side plate and the fixing plate 111, and the three reinforcing ribs 113 are uniformly arranged at intervals along the length direction of the supporting side plate, so that the bearing capacity of the bracket 11 is improved.

Note that the above is only a preferred embodiment of the present utility model and the technical principle applied. It will be understood by those skilled in the art that the present utility model is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the utility model. Therefore, while the utility model has been described in connection with the above embodiments, the utility model is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the utility model, which is set forth in the following claims.

Claims (10)

1. The nuclear power plant pipeline support, its characterized in that includes:

the pipeline fixing frame (1) is used for fixing a pipeline;

the vibration isolation frame (2) is supported on the ground, and the pipeline fixing frame (1) is supported at the upper end of the vibration isolation frame (2) and is elastically connected with the upper end of the vibration isolation frame (2);

and the damper (3) is supported on the ground and is arranged at intervals with the vibration isolation frame (2), and the pipeline fixing frame (1) is abutted with the upper end of the damper (3).

2. The nuclear power plant pipeline bracket according to claim 1, wherein the vibration isolation frame (2) comprises a base (21) and a vibration isolation member (22), the lower end of the base (21) is supported on the ground, the vibration isolation member (22) is arranged between the upper end of the base (21) and the pipeline bracket (1), and the vibration isolation member (22) can be stressed and contracted.

3. The nuclear power plant pipe bracket according to claim 2, characterized in that the vibration isolator (22) is metal rubber.

4. The nuclear power plant pipeline bracket according to claim 2, wherein the vibration isolation frame (2) further comprises a vibration isolation piece bottom plate (23), the vibration isolation piece bottom plate (23) is detachably connected to the top plate of the base (21) and has an adjustable distance from the top plate of the base (21), and the vibration isolation piece (22) is arranged between the vibration isolation piece bottom plate (23) and the pipeline fixing frame (1).

5. The nuclear power plant pipe bracket according to claim 4, wherein the vibration isolation frame (2) further comprises an adjusting member (24), the adjusting member (24) is adjustably and detachably connected to the vibration isolation base plate (23) and the pipe fixing frame (1), and the adjusting member (24) is capable of adjusting a distance between the vibration isolation base plate (23) and the pipe fixing frame (1).

6. The nuclear power plant pipeline bracket according to claim 5, wherein the pipeline fixing frame (1) is provided with a first connecting hole (10), the vibration isolation piece bottom plate (23) is provided with a second connecting hole, and a bolt can pass through the first connecting hole (10) and the second connecting hole and then be in threaded connection with a first nut.

7. The nuclear power plant pipeline bracket according to claim 4, wherein a third connecting hole is formed in a top plate of the base (21), a fourth connecting hole is formed in the vibration isolator bottom plate (23), a screw (25) can pass through the third connecting hole and the fourth connecting hole and is in threaded connection with at least four second nuts (26), at least two second nuts are abutted to two sides of the top plate of the base (21), and at least two second nuts are abutted to two sides of the vibration isolator bottom plate (23).

8. The nuclear power plant pipeline bracket according to any one of claims 1 to 7, wherein the pipeline fixing bracket (1) comprises a bracket (11) and a pipeline clamp (12), the bracket (11) is connected to the upper ends of the damper (3) and the vibration isolation bracket (2), the pipeline clamp (12) is arranged on the bracket (11), and the pipeline clamp (12) can be clamped to the pipeline.

9. The nuclear power plant pipeline bracket according to claim 8, wherein the bracket (11) comprises a fixing plate (111), a supporting member (112) and a reinforcing rib (113), the fixing plate (111) is connected to the upper ends of the damper (3) and the vibration isolation frame (2), the supporting member (112) is arranged on the fixing plate (111), the pipeline clamp (12) is supported by the supporting member (112), and the reinforcing rib (113) is connected between the supporting member (112) and the fixing plate (111).

10. A nuclear power plant pipe support according to any one of claims 1-7, characterized in that the damper (3) is a hydraulic damper.

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