CN112963622A - High-damping vibration reduction and isolation support for nuclear power pipeline - Google Patents
High-damping vibration reduction and isolation support for nuclear power pipeline Download PDFInfo
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- CN112963622A CN112963622A CN202110196666.9A CN202110196666A CN112963622A CN 112963622 A CN112963622 A CN 112963622A CN 202110196666 A CN202110196666 A CN 202110196666A CN 112963622 A CN112963622 A CN 112963622A
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- guide rod
- metal guide
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/02—Energy absorbers; Noise absorbers
- F16L55/033—Noise absorbers
- F16L55/035—Noise absorbers in the form of specially adapted hangers or supports
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Supports For Pipes And Cables (AREA)
- Vibration Prevention Devices (AREA)
Abstract
The invention discloses a high-damping vibration reduction and isolation support for a nuclear power pipeline, which solves the technical problem that the vibration reduction capability of the conventional nuclear power pipeline support is insufficient and needs to be further improved. The damping support comprises a pipe support and a damping support, wherein the damping support comprises a first metal guide rod, a guide pipe, a lever structure and a damping module, the guide pipe is arranged between a fixing panel and an installation panel, the damping module is further arranged between the fixing panel and the installation panel, one end of the first metal guide rod is connected with the pipe support, the other end of the first metal guide rod is positioned in the guide pipe and is in sliding connection with the guide pipe, and the lever structure is hinged with the first metal guide rod, the fixing panel and the damping module. The invention has the advantages of good supporting and vibration damping performance, effective protection of the nuclear power pipeline and the like.
Description
Technical Field
The invention relates to the technical field of nuclear power pipeline supporting, in particular to a high-damping vibration reduction and isolation support for a nuclear power pipeline.
Background
The nuclear power pipeline system is one of important engineering structures widely applied in modern nuclear power devices and is an important propagation path of vibration noise. In general, vibration noise of the nuclear power pipeline mainly originates from vibration of the excitation device and flow of fluid inside the pipeline, and is transmitted to the foundation through the pipeline support. The nuclear power pipeline has higher requirements on vibration reduction due to the particularity of transporting materials, if the vibration reduction is insufficient, the bracket and the pipeline are possibly damaged, so that the safety problems such as leakage and the like are caused, and the problem of vibration noise of the pipeline is more prominent along with the improvement of the requirements of modern people on life and working environment.
However, the existing nuclear power pipeline has insufficient damping capacity due to lack of damping, and further improvement is needed.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the conventional nuclear power pipeline bracket lacks damping, so that the damping capacity is insufficient.
The invention is realized by the following technical scheme:
the utility model provides a high damping nuclear power pipeline subtracts vibration isolation support, includes conduit saddle and damping support, the damping support includes first metal guide arm, stand pipe, lever structure and damping module, the stand pipe sets up between mounting panel and installation panel, still install damping module between mounting panel and the installation panel, the one end of first metal guide arm is connected the conduit saddle, the first metal guide arm other end is located in the stand pipe and with stand pipe sliding connection, lever structure lead to with first metal guide arm fixing panel with damping module is articulated.
According to the invention, the lever structure is arranged, so that the load borne by the pipe bracket is transferred to the damping module through the lever structure, and the damping module is used for damping, thereby improving the damping performance of the whole damping support.
According to the high-damping nuclear power pipeline vibration reduction and isolation support, the number of the lever structures and the number of the damping modules are preferably multiple, the lever structures are distributed around the first metal guide rod, and the plurality of the lever structures are hinged with the plurality of the damping modules.
The plurality of lever structures can distribute the load on the pipe bracket on the plurality of damping modules, and a better vibration damping effect is achieved.
Furthermore, the lever structures are uniformly distributed around the first metal guide rod, so that the load borne by the pipe bracket can be uniformly distributed in different damping modules for vibration decomposition and consumption, and the vibration damping performance of the whole vibration damping support is better improved.
The invention preferably discloses a high-damping nuclear power pipeline vibration reduction and isolation support, wherein the lever structure comprises a first connecting rod, a second connecting rod and a third connecting rod, one ends of the first connecting rod and the second connecting rod are hinged with a damping module, the other ends of the second connecting rod and the third connecting rod are hinged with a fixed panel, and the other ends of the third connecting rod and the first connecting rod are hinged with a first metal guide rod.
The invention preferably discloses a high-damping vibration reduction and isolation support for a nuclear power pipeline, wherein one ends of a first connecting rod and a second connecting rod are hinged to a first hinged point together with a damping module, the other ends of the second connecting rod and a third connecting rod are hinged to a second hinged point together with a fixed panel, the other ends of the third connecting rod and the first connecting rod are hinged to a third hinged point together with a first metal guide rod, a plurality of first hinged points are symmetrically distributed along the first metal guide rod, and a plurality of second hinged points are axially symmetrically distributed along the first metal guide rod.
The high-damping nuclear power pipeline vibration reduction and isolation support is preferably selected, and the length of the second connecting rod is larger than that of the third connecting rod.
The damping module comprises a sealing shell, a second metal guide rod and a hollow tube, wherein the hollow tube is arranged at one end of the sealing shell, one end of the second metal guide rod penetrates through the fixing panel and is hinged with the lever structure, the other end of the second metal guide rod is positioned in the hollow tube and is in sliding connection with the hollow tube, a sliding block is fixedly connected onto the second metal guide rod, the second metal guide rod is hinged with the lever structure, a vibration reduction block is arranged in the sealing shell, the vibration reduction block surrounds the sliding block, and the hollow tube is connected with the mounting panel.
The invention preferably discloses a high-damping vibration reduction and isolation support for a nuclear power pipeline, wherein the vibration reduction block is a metal rubber block.
Aiming at the whole vibration damping support structure, the metal damping rubber can repeatedly generate the friction between the silk screens under the condition of large displacement deformation so as to generate larger damping, most of the vibration of the nuclear power pipeline is micro-amplitude vibration, so that the generated micro-amplitude vibration needs to be amplified to generate enough displacement so as to increase the damping of the support structure and improve the vibration damping performance of the support, in the structure, the micro-amplitude vibration transmitted to the first metal guide rod by the pipeline through the pipe bracket is amplified through the lever structure, since the lever has a smaller arm length from the first metal guide bar hinge to the fixed panel hinge panel than from the second metal guide bar hinge to the fixed panel hinge, the vibrations transmitted to the second metal guide of the damping module are thus amplified in equal proportion to the arm length ratio, and then make metal rubber produce great displacement to further through increasing damping consumption, improved the damping performance of whole support.
The invention preferably discloses a high-damping vibration reduction and isolation support for a nuclear power pipeline.
Furthermore, a non-return gasket is arranged at the contact part of the adjusting bolt and the sealing shell.
The invention preferably discloses a high-damping nuclear power pipeline vibration reduction and isolation support, wherein the vibration reduction block comprises an upper vibration reduction block and a lower vibration reduction block which are arranged in opposite directions, a through hole is formed in the axial center of the vibration reduction block, the middle parts of opposite sides of the upper vibration reduction block and the lower vibration reduction block are respectively provided with an inner concave part, and the inner concave parts accommodate the sliding blocks.
Furthermore, the upper vibration reduction block and the lower vibration reduction block are symmetrically arranged along the center line of the height direction of the sliding block.
The invention preferably discloses a high-damping vibration reduction and isolation support for a nuclear power pipeline, wherein the size of the vibration reduction block is larger than that of an inner cavity of the shell.
For each damping module, the size of the metal rubber block in the vertical direction is slightly larger than the inner space of the sealing shell, so that the metal rubber can generate a certain amount of compression after the assembly is finished, a certain preload is generated, and the support can effectively bear the pipeline under the condition that the preload exists; meanwhile, under the condition that a certain preload exists, the characteristics of the metal rubber material can be better exerted, such as larger damping and energy loss, and the vibration isolation of the bracket has a positive effect.
Meanwhile, the contact surfaces of the upper shell and the lower shell are fully sealed, and the metal rubber material can be isolated from the support mounting environment after being fastened, because the metal rubber material is austenitic stainless steel, is transformed into martensite by phase transformation in the machining process, is easy to be rapidly oxidized and corroded in the corrosion environment of the nuclear power device to lose functions, and the sealing structure of the shell can relieve the failure of the metal rubber material to a certain extent. The precompression amount of the metal rubber can be adjusted by adjusting the tightness degree of the bolt, and according to the nonlinear characteristic of the metal rubber structure, the seal shell generates larger compression amount to the metal rubber block when the adjusting bolt is screwed down so as to increase the rigidity of the metal rubber block; on the contrary, when the adjusting bolt is loosened, the compression of the metal rubber block by the sealing shell is reduced, and further the rigidity of the metal rubber block is reduced. Because the support load and the adjusting bolt torque have a definite relation, the support load can be adjusted to the size required by field pipeline installation by changing the adjusting bolt torque, and then the non-return gasket is fixed, so that the situation that the position of the adjusting bolt moves to influence the rigidity of the damping module under working loads such as vibration and the like is prevented.
The upper surface and the lower surface of the sealing shell simultaneously play a role in limiting and supporting, when extreme shock loads such as earthquakes occur, the support structure generates large displacement, the sliding block is rapidly clamped at the upper surface and the lower surface of the sealing shell, the support is made to be a rigid structure, further deformation of the pipeline is avoided, and the safety of the nuclear power pipeline is guaranteed.
According to the high-damping nuclear power pipeline vibration reduction and isolation support, the upper shell is provided with the extension portion, the extension portion is connected with the fixed panel through the mounting bolt, so that the connection between the damping module and the fixed panel is achieved, and the hollow pipe penetrates into the mounting panel.
Further, the bottom of the hollow pipe is provided with a screw rod, and the screw rod is in threaded connection with the installation panel.
The invention preferably discloses a high-damping vibration reduction and isolation support for a nuclear power pipeline.
According to the high-damping vibration reduction and isolation support for the nuclear power pipeline, a second through hole is formed in the top of the upper shell, and the first metal guide rod penetrates through the second through hole to be connected with the pipe bracket.
Each part of the sealing shell is of a hollow cylindrical structure, a second through hole is formed in the center of each part of the sealing shell, the upper vibration reduction block and the lower vibration reduction block are arranged in the upper shell and the lower shell respectively, the sealing shell is mounted and fastened through two pairs of adjusting bolts, certain sealing performance is achieved after the upper end and the lower end of the sealing shell are fastened, and the adjusting bolts are provided with check gaskets.
The high-damping nuclear power pipeline vibration reduction and isolation support is preferably a high-damping nuclear power pipeline vibration reduction and isolation support, the pipe bracket is of a semicircular structure, and the pipe bracket of the semicircular structure can wrap the pipeline, so that the gravity of the pipeline is completely transmitted to the pipeline support through the support pipe.
During specific installation, the installation sequence is as follows: the upper shell, the upper vibration damping block, the second metal guide rod, the lower vibration damping block and the lower shell are fastened through adjusting bolts, one end of the second metal guide rod is hinged to the lever structure, a sliding block is welded in the middle of the second metal guide rod, the other end of the second metal guide rod is arranged in the hollow pipe and is in sliding connection with the hollow pipe, and the first metal guide rod is prevented from obviously swinging radially.
The invention has the following advantages and beneficial effects:
1. according to the invention, the lever structure is matched with the damping module, so that the load borne by the pipe bracket is transferred to the damping module through the lever structure, and the damping module is used for damping, thereby improving the damping performance of the whole damping support.
2. According to the invention, the micro-amplitude vibration transmitted to the first metal guide rod by the pipeline through the pipe bracket is amplified through the lever structure, and the second connecting rod is longer than the first connecting rod, so that the vibration transmitted to the second metal guide rod of the damping module is amplified in equal proportion according to the arm length ratio, the metal rubber generates larger displacement, and the damping performance of the whole bracket is improved by further increasing the damping consumption;
3. the pipeline support is provided with the sealing shell, the vibration reduction block is arranged in the sealing shell, the first metal guide rod penetrates through the sealing shell and is connected with the hollow pipe in a sliding mode, the first metal guide rod is further provided with the sliding block, the sliding block is located in the concave portion of the vibration reduction block, therefore, load generated on a pipeline is transmitted to the first metal guide rod through the pipe support and is subjected to vibration reduction through the vibration reduction block, and the first metal guide rod can further reduce vibration through the sliding of the first metal guide rod in the hollow pipe in cooperation with the vibration reduction block.
4. The damping block of the invention adopts metal rubber, and under the condition of certain preload, the material property can obtain larger damping and energy loss, thus being beneficial to improving the damping performance of the pipeline bracket.
5. The invention can adjust the preloading and bearing capacity of the pipeline bracket by changing the compression amount of the metal rubber block by the sealing shell through the adjusting bolt, so that the pipeline bracket can meet various load requirements in the pipeline installation process.
6. The invention can achieve the effect of limiting and supporting through the upper surface and the lower surface of the shell, can play the role of rigid support when meeting a large load suddenly, and protects the safety of the nuclear power pipeline.
7. The invention has the characteristics of simple structure, convenient processing and the like, can conveniently carry out operations such as replacement, maintenance and the like, and can effectively meet the requirement of pipeline vibration isolation in a nuclear power environment.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the damping module of the present invention.
Reference numbers and corresponding part names in the drawings:
the structure comprises a pipe support 1, a pipe support 2, a first metal guide rod 3, a first connecting rod 4, a second connecting rod 5, a third connecting rod 6, a first hinge point 7, a second hinge point 8, a third hinge point 9, a guide pipe 10, a fixed panel 11, an installation panel 12, a sealed shell 13, a second metal guide rod 14, a sliding block 14, a hollow pipe 15, an adjusting bolt 16, a vibration damping block 17, an installation screw 18, an installation bolt 19 and an extension part 20.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
As shown in fig. 1 and 2, a high damping nuclear power pipeline vibration reduction and isolation support comprises a pipe bracket 1 and a vibration reduction support, wherein the vibration reduction support comprises a first metal guide rod 2, a guide pipe 9, a lever structure and a damping module, the guide pipe 9 is arranged between a fixing panel 10 and an installation panel 11, the damping module is further installed between the fixing panel 10 and the installation panel 11, one end of the first metal guide rod 2 is connected with the pipe bracket 1, the other end of the first metal guide rod 2 is located in the guide pipe 9 and is in sliding connection with the guide pipe 9, and the lever structure is communicated with the first metal guide rod 2, the fixing panel 10 and the damping module are hinged.
The lever structure comprises a first connecting rod 3, a second connecting rod 4 and a third connecting rod 5, wherein one ends of the first connecting rod 3 and the second connecting rod 4 are hinged to a first hinge point 6 together with a damping module, the other ends of the second connecting rod 4 and one end of the third connecting rod 5 are hinged to a second hinge point 7 together with a fixed panel 10, the other end of the third connecting rod 5 and the other end of the first connecting rod 3 are hinged to a third hinge point 8 together with a first metal guide rod 2, the first hinge points 6 are symmetrically distributed along the first metal guide rod 2, the second hinge points 7 are symmetrically distributed along the first metal guide rod 2, and the length of the second connecting rod 4 is greater than that of the third connecting rod 5.
The lever structure is two, corresponds damping module and also is two, and all follows first metal guide rod 2 symmetric distribution, and the load that bears like this on conduit saddle 1 can evenly distributed vibrate in the damping module of two differences and decompose the consumption to better improve the damping performance of whole damping support.
The damping module comprises a sealed shell 12, a second metal guide rod 13 and a hollow pipe 15, the sealed shell 12 comprises an upper shell and a lower shell, the upper shell and the lower shell are connected through an adjusting bolt 16, the hollow pipe 15 is arranged at one end of the lower shell, one end of the second metal guide rod 13 penetrates through the upper shell and the fixing panel 10 and is hinged to the lever structure, the other end of the second metal guide rod 13 is located in the hollow pipe 15 and is connected with the hollow pipe 15 in a sliding mode, a sliding block 14 is fixedly connected to the second metal guide rod 13, the second metal guide rod 13 is hinged to the lever structure, a damping block 17 is arranged in the sealed shell 12, the damping block 17 surrounds the sliding block 14, and the hollow pipe 15 is connected with the mounting panel 11.
The damping module is a metal damping rubber module.
Aiming at the whole vibration reduction bracket structure, the metal damping rubber can repeatedly generate the friction between the silk screens to generate larger damping under the condition of large displacement deformation, the vibration of the nuclear power pipeline is mostly micro-amplitude vibration, so the generated micro-amplitude vibration needs to be amplified to generate enough displacement to increase the damping of the bracket structure and improve the vibration reduction performance of the bracket, the micro-amplitude vibration of the pipeline transmitted to the first metal guide rod 2 through the pipe bracket 1 is amplified through a lever structure in the structure, because the arm length of the lever from the first metal guide rod 2 hinge to the fixed panel 10 hinge panel is smaller than the arm length from the second metal guide rod 13 hinge to the fixed panel 10 hinge, the vibration transmitted to the second metal guide rod 13 of the damping module is amplified in equal proportion of the arm length ratio, so the metal rubber generates larger displacement and further increases the damping consumption, the vibration damping performance of the whole bracket is improved.
The contact part of the adjusting bolt 16 and the sealing shell 12 is also provided with a check gasket.
The vibration reduction block 17 comprises an upper vibration reduction block 17 and a lower vibration reduction block 17 which are arranged in opposite directions, the upper vibration reduction block 17 and the lower vibration reduction block 17 are symmetrically arranged along the center line of the height direction of the sliding block 14, a through hole is formed in the axial center of the vibration reduction block 17, inner concave parts are arranged in the middle of one opposite side of the upper vibration reduction block 17 and the lower vibration reduction block 17, and the sliding block 14 is accommodated in the inner concave parts.
The vertical dimension of the vibration damping block 17 is larger than the inner cavity dimension of the shell.
For each damping module, the vertical dimension of the metal rubber block should be slightly larger than the inner space of the sealing shell 12, so that after the assembly is completed, the metal rubber can generate a certain amount of compression, further a certain preload is generated, and the bracket can effectively bear the pipeline under the condition that the preload exists; meanwhile, under the condition that a certain preload exists, the characteristics of the metal rubber material can be better exerted, such as larger damping and energy loss, and the vibration isolation of the bracket has a positive effect.
Meanwhile, the contact surfaces of the upper shell and the lower shell are fully sealed, and the metal rubber material can be isolated from the support mounting environment after being fastened, because the metal rubber material is austenitic stainless steel, is transformed into martensite by phase transformation in the machining process, is easy to be rapidly oxidized and corroded in the corrosion environment of the nuclear power device to lose functions, and the sealing structure of the shell can relieve the failure of the metal rubber material to a certain extent. The precompression amount of the metal rubber can be adjusted by adjusting the tightness degree of the bolt 16, and according to the nonlinear characteristic of the metal rubber structure, the seal shell 12 generates larger compression amount to the metal rubber block when the adjusting bolt 16 is screwed down so as to increase the rigidity of the metal rubber block; on the contrary, when the adjusting screw 16 is loosened, the compression of the metal rubber block by the seal housing 12 is reduced, which in turn reduces the rigidity of the metal rubber block. Because the support load and the moment of the adjusting bolt 16 have a definite relationship, the support load can be adjusted to the size required by field pipeline installation by changing the moment of the adjusting bolt 16, and then the check gasket is fixed, so that the situation that the position of the adjusting bolt 16 moves under working loads such as vibration and the like to influence the rigidity of the damping module is prevented.
The upper surface and the lower surface of the sealing shell 12 play a role of limiting and supporting, when extreme shock loads such as earthquakes occur, the support structure generates large displacement, the sliding block 14 is rapidly clamped at the upper surface and the lower surface of the sealing shell 12, the support is made to be a rigid structure, further deformation of a pipeline is avoided, and the safety of a nuclear power pipeline is guaranteed.
Go up the casing and be provided with extension 20, construction bolt 19 connects extension 20 with fixed panel 10 is connected to realize being connected of damping module and fixed panel 10, hollow tube 15 penetrates in the construction panel 11.
The bottom of the hollow pipe 15 is provided with a screw rod, and the screw rod is in threaded connection with the mounting panel 11.
The lateral wall of going up the casing is provided with the engaging lug, the lateral wall of casing is provided with down the engaging lug down, go up the engaging lug and pass through adjusting bolt 16 with lower engaging lug and connect.
The top of the upper shell is provided with a second through hole, and the first metal guide rod 2 penetrates through the second through hole to be connected with the pipe bracket 1.
Each part of the sealing shell 12 is of a hollow cylindrical structure, a second through hole is formed in the center of each part, the upper vibration reduction block 17 and the lower vibration reduction block 17 are arranged in the upper shell and the lower shell respectively, the sealing shell 12 is installed and fastened through two pairs of adjusting bolts 16, certain sealing performance is achieved after the upper end and the lower end of the sealing shell 12 are fastened, and the adjusting bolts 16 are provided with check gaskets.
The pipe bracket 1 is of a semicircular structure, and the pipe bracket 1 of the semicircular structure can wrap the pipeline, so that the gravity of the pipeline is completely transmitted to the pipeline bracket through the support pipe.
During specific installation, the installation sequence is as follows: the upper shell, the upper vibration damping block 17, the second metal guide rod 13, the lower vibration damping block 17 and the lower shell are fastened through an adjusting bolt 16, one end of the second metal guide rod 13 is hinged to the lever structure, the middle of the second metal guide rod is welded with the sliding block 14, the other end of the second metal guide rod is arranged in the hollow pipe 15 and is in sliding connection with the hollow pipe 15, the first metal guide rod 2 is prevented from obviously swinging in the radial direction, and finally the whole support structure penetrates through the mounting panel 11 through a mounting screw 18 and is fixed at the support mounting positions such as a factory building base.
Example 2
The present embodiment is different from embodiment 1 in that the number of the lever structures is at least 3, and correspondingly, the number of the damping modules is also 3.
In the present invention, the terms "upper", "lower", "height", and the like are used in the orientations shown in the drawings.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The high-damping vibration reduction and isolation support for the nuclear power pipeline is characterized by comprising a pipe bracket (1), a first metal guide rod (2), a guide pipe (9), a lever structure and a damping module, wherein the guide pipe (9) is arranged between a fixing panel (10) and an installation panel (11), the damping module is further arranged between the fixing panel (10) and the installation panel (11), one end of the first metal guide rod (2) is connected with the pipe bracket (1), the other end of the first metal guide rod (2) is positioned in the guide pipe (9) and is in sliding connection with the guide pipe (9), the lever structure is respectively hinged with the first metal guide rod (2), the fixing panel (10) and the damping module, the lever structure comprises a first connecting rod (3), a second connecting rod (4) and a third connecting rod (5), one ends of the first connecting rod (3) and the second connecting rod (4) are hinged with the damping module, the other end of the second connecting rod (4) and one end of the third connecting rod (5) are hinged to the fixing panel (10), and the other end of the third connecting rod (5) and the other end of the first connecting rod (3) are hinged to the first metal guide rod (2).
2. The high damping nuclear power pipeline vibration reducing and isolating bracket as claimed in claim 1, wherein the number of the lever structures and the damping modules is plural, the lever structures are distributed around the first metal guide rod (2), and the plural lever structures are hinged with the plural damping modules.
3. The high damping nuclear power pipeline vibration reducing and isolating support frame as claimed in claim 1 or 2, wherein the lever structure and the damping modules are evenly distributed around the first metal guide rod (2).
4. The high-damping nuclear power pipeline vibration reduction and isolation support is characterized in that one ends of the first connecting rod (3) and the second connecting rod (4) are hinged to a first hinge point (6) together with a damping module, the other ends of the second connecting rod (4) and the third connecting rod (5) are hinged to a second hinge point (7) together with a fixed panel (10), the other ends of the third connecting rod (5) and the first connecting rod (3) are hinged to a third hinge point (8) together with the first metal guide rod (2), the first hinge points (6) are symmetrically distributed along the first metal guide rod (2), and the second hinge points (7) are axially symmetrically distributed along the first metal guide rod (2).
5. The high damping nuclear power pipeline vibration reduction and isolation bracket according to claim 1, characterized in that the length of the second connecting rod (4) is greater than the length of the third connecting rod (5).
6. The vibration reducing and isolating support for the high-damping nuclear power pipeline according to claim 1 or 2, the damping module comprises a sealed shell (12), a second metal guide rod (13) and a hollow pipe (15), a hollow pipe (15) is arranged at one end of the sealed shell (12), one end of the second metal guide rod (13) penetrates through the fixed panel (10), the other end of the second metal guide rod (13) is positioned in the hollow pipe (15) and is connected with the hollow pipe (15) in a sliding way, a sliding block (14) is fixedly connected to the second metal guide rod (13), the second metal guide rod (13) is hinged with the lever structure, a vibration reduction block (17) is arranged in the sealed shell (12), the vibration reduction block (17) encloses the sliding block (14), and the hollow pipe (15) is connected with the installation panel (11).
7. The high-damping nuclear power pipeline vibration reduction and isolation support as claimed in claim 6, wherein the sealing shell (12) comprises an upper shell and a lower shell, and the upper shell and the lower shell are connected through adjusting bolts (16).
8. The high-damping nuclear power pipeline vibration reduction and isolation support as claimed in claim 6, wherein the vibration reduction block (17) comprises an upper vibration reduction block (17) and a lower vibration reduction block (17) which are arranged oppositely, a through hole is formed in the axial center of the vibration reduction block (17), the middle parts of the opposite sides of the upper vibration reduction block (17) and the lower vibration reduction block (17) are respectively provided with an inner concave part, and the inner concave parts accommodate the sliding blocks (14).
9. The high damping nuclear power pipeline vibration damping and isolating support as claimed in claim 6, wherein the vibration damping block (17) is a metal rubber block.
10. The high damping nuclear power pipeline vibration damping and isolating support as claimed in claim 6, wherein the size of the vibration damping block (17) is larger than the size of the inner cavity of the sealed shell (12).
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| CN202110196666.9A CN112963622B (en) | 2021-02-22 | 2021-02-22 | High-damping vibration reduction and isolation support for nuclear power pipeline |
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| CN202110196666.9A CN112963622B (en) | 2021-02-22 | 2021-02-22 | High-damping vibration reduction and isolation support for nuclear power pipeline |
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