Pipe isolation device

Abstract

The application provides a pipeline vibration isolation device, which comprises a penetrating member and a sleeve pipe sleeved outside the penetrating member, the sleeve pipe is arranged in a wall body, and an isolation cavity is arranged between the sleeve pipe and the penetrating member; the pipeline vibration isolation device further comprises a vibration isolation assembly which is sleeved outside the sleeve pipe and comprises a first vibration isolation plate and a second vibration isolation plate, the first vibration isolation plate and the second vibration isolation plate are arranged along the axial direction and the radial direction of the penetrating member respectively. The pipeline vibration isolation device has the sleeve pipe arranged outside the penetrating member, and the isolation cavity is arranged between the sleeve pipe and the penetrating member, so that the function of temperature insulation can be achieved; the first vibration isolation plate and the second vibration isolation plate arranged outside the sleeve pipe are arranged along the axial direction and the radial direction of the penetrating member, so that the vibration isolation requirement of the pipeline in multiple degrees of freedom directions can be met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipeline vibration isolation, and particularly relates to a pipeline vibration isolation device. BACKGROUND

[0002] When a nuclear power plant pipeline passes through a wall and is connected with the wall, a through piece is generally used. The through piece needs to bear the force and bending moment of the pipeline support point first, and needs to meet the pipeline support stiffness requirement. Secondly, the through piece design should meet the heat insulation and fire resistance requirements of the pipeline under normal operation or accident conditions according to its use environment.

[0003] At present, the pipeline through piece generally adopts steel and is anchored in the concrete wall. However, the vibration of the large pipeline of the nuclear power plant is generally transmitted to the main control room and other use scenarios through the wall at the pipeline support through piece, thereby causing noise in the use scenario and affecting the normal work of the use scenario.

[0004] At present, pipeline vibration isolation generally uses rubber pads, spring isolators and other vibration isolation elements for vibration isolation to reduce vibration transmission. However, in the actual application of nuclear power, for large pipeline vibration, the traditional seismic isolation devices such as rubber vibration isolation pads and spring isolators, air springs have the following technical problems:

[0005] 1. Weak stiffness and low bearing capacity, which cannot meet the stiffness and bearing capacity requirements of the large pipeline support point;

[0006] 2. Rubber vibration isolation pads are not resistant to high temperature, age quickly, and durability is difficult to meet the design requirements of nuclear power;

[0007] 3. The spring isolator has a small damping ratio, and the vibration isolation effect is poor in the high frequency region;

[0008] 4. It is generally only suitable for single-direction vibration isolation, and it is difficult to meet the multi-directional vibration isolation requirements of the nuclear power pipeline in the vertical, horizontal and rotational directions.

[0009] That is, the reason for the vibration of the large pipeline of the nuclear power plant is complex, and the frequency components are rich. The current commonly used vibration isolation method has poor vibration isolation effect in the high frequency region.

[0010] Based on this, the present application provides a pipeline vibration isolation device to solve the above technical problems. SUMMARY

[0011] The technical problem solved by the present application is to overcome the defects of poor nuclear power pipeline vibration isolation in the prior art, and to provide a pipeline vibration isolation device.

[0012] The present application solves the above technical problems by the following technical scheme:

[0013] The present application provides a pipeline vibration isolation device, characterized in that it comprises:

[0014] The through member and a sleeve pipe sleeved outside the through member are arranged in the wall, and an isolation cavity is formed between the sleeve pipe and the through member;

[0015] A vibration isolation assembly is arranged outside the sleeve pipe and includes a first vibration isolation plate and a second vibration isolation plate, the first vibration isolation plate and the second vibration isolation plate are arranged along the axial direction and the radial direction of the through member respectively.

[0016] According to an embodiment of the present application, a thermal insulation layer is sleeved outside the through member, and an outer end surface of the thermal insulation layer is spaced apart from an inner end surface of the sleeve pipe.

[0017] According to an embodiment of the present application, the first vibration isolation plate and the second vibration isolation plate are both arranged in the hole formed in the wall; or,

[0018] At least one of the first vibration isolation plate and the second vibration isolation plate is arranged outside the hole formed in the wall.

[0019] According to an embodiment of the present application, the first vibration isolation plate is arranged along the axial direction of the through member and includes a first plate body and a second plate body;

[0020] The second vibration isolation plate is arranged along the radial direction of the through member, and the first plate body and the second plate body are arranged on opposite sides of the second vibration isolation plate, and a partition plate is sleeved outside the second vibration isolation plate.

[0021] According to an embodiment of the present application, at least one shear nail is arranged inside the wall, one end of the shear nail is embedded in the wall, and the other end of the shear nail abuts against the partition plate.

[0022] According to an embodiment of the present application, the first plate body and the second plate body are further provided with a flange and a plurality of stiffening plates mounted outside the flange on the side away from each other;

[0023] The plurality of stiffening plates are arranged at intervals around the outer periphery of the flange.

[0024] According to an embodiment of the present application, a filling cavity is formed between the end of the first vibration isolation plate away from the sleeve pipe and the wall, and the filling cavity is filled with a flexible material.

[0025] According to an embodiment of the present application, the second vibration isolation plate includes a plurality of vibration isolation units, the plurality of vibration isolation units are uniformly and evenly arranged around the outer periphery of the sleeve pipe, and an installation gap is formed between adjacent vibration isolation units;

[0026] The installation gap is filled with a rotation blocking member.

[0027] According to an embodiment of the present application, the rotation blocking member includes a rotation blocking block and a sealing strip;

[0028] The anti-rotation block is connected to one end of the sleeve, and the sealing strip is sealed to the other end of the anti-rotation block.

[0029] According to one embodiment of the present application, the through member is integrally arranged with the sleeve.

[0030] The positive progress effect of the present application is that:

[0031] The pipeline vibration isolation device of the present application is provided with a sleeve outside the through member, and an isolation cavity is arranged between the sleeve and the through member, thereby playing a temperature insulation role. The first vibration isolation plate and the second vibration isolation plate are arranged along the axial direction and the radial direction of the through member outside the sleeve, which can meet the rigidity and carrying capacity requirements of large pipelines in multiple degrees of freedom directions of support points, and can also realize rigid vibration isolation of complex high-frequency vibration. BRIEF DESCRIPTION OF DRAWINGS

[0032] The above and other features, properties, and advantages of the present application will become more apparent through the following description with reference to the accompanying drawings and embodiments, in which:

[0033] Figure 1 is a sectional view of the pipeline vibration isolation device of the present application;

[0034] Figure 2 is a sectional view of one angle of Figure 1 ;

[0035] Figure 3 is a sectional view of another angle of Figure 1 ;

[0036] Figure 4 is an enlarged view of A in Figure 1 ;

[0037] Figure 5 is a structural schematic view of another embodiment of the present application;

[0038] Figure 6 is a structural schematic view of still another embodiment of the present application.

[0039] 1, through member; 11, thermal insulation layer; 2, sleeve; 21, isolation cavity; 3, wall body; 31, shear nail; 4, vibration isolation assembly; 41, first vibration isolation plate; 411, first plate body; 412, second plate body; 413, flange; 414, stiffened plate; 415, filling cavity; 42, second vibration isolation plate; 421, vibration isolation unit; 422, mounting gap; 423, anti-rotation member; 424, anti-rotation block; 425, sealing strip; 426, partition plate. DETAILED DESCRIPTION

[0040] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some examples or embodiments of the present application, and for those skilled in the art, the present application can also be applied to other similar scenarios without creative labor on the basis of the drawings. Unless the context clearly indicates otherwise or otherwise stated, the same reference numbers in the drawings represent the same structures or operations.

[0041] As shown in the present application and claims, unless the context clearly indicates otherwise or otherwise stated, the words "one", "a", "an", and / or "the" do not specifically indicate the singular, but can also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of the steps and elements explicitly identified, and these steps and elements do not constitute an exclusive list, and the method or device can also include other steps or elements.

[0042] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship are generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without the opposite indication, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component.

[0043] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0044] In addition, it should be noted that the use of the terms "first", "second" and the like is merely intended to differentiate between similar objects, and does not imply a special meaning unless otherwise stated. In addition, although the terms used in the present application are selected from the commonly used terms, some of the terms mentioned in the present application may be selected by the applicant according to his or her judgment, and the detailed meanings thereof are described in the relevant part of the description. In addition, the present application is required to be understood not only by the actual terms used, but also by the meaning implied by each term.

[0045] With reference to Figures 1 to 6 The present application provides a pipeline rigid vibration isolation device, comprising a through member 1 and a sleeve 2 sleeved outside the through member 1, the sleeve 2 is arranged in a wall 3, and the sleeve 2 and the through member 1 have an isolation cavity 21 therebetween.

[0046] It should be noted that the pipeline has a section at each of the opposite ends of the through member 1, the pipeline rigid vibration isolation device is used to pass through the wall 3, and is connected with the pipeline and plays a supporting and vibration isolation role.

[0047] Specifically, a hole is formed in the wall 3, and the sleeve 2 is arranged in the hole.

[0048] The part of the through member 1 inside the wall 3 is located inside the sleeve 2 and forms the isolation cavity 21 therebetween, the isolation cavity 21 can isolate the heat transfer path of the through member 1 to the wall 3, and plays a heat insulation role.

[0049] Further, one end of the sleeve 2 is located at least outside the wall 3, used to increase the heat transfer path of the pipeline to the through member 1, then to the sleeve 2 and finally to the wall 3, so as to avoid excessive heat transfer of the pipeline to the wall 3.

[0050] The pipeline rigid vibration isolation device further comprises a vibration isolation assembly 4, the vibration isolation assembly 4 is sleeved outside the sleeve 2 and comprises a first vibration isolation plate 41 and a second vibration isolation plate 42, the first vibration isolation plate 41 and the second vibration isolation plate 42 are arranged along the axial direction and the radial direction of the through member 1 respectively.

[0051] The first vibration isolation plate 41 and the second vibration isolation plate 42 are used to isolate the vibration of the sleeve 2 transferred to the wall 3, the vibration includes the vibration generated along the axial direction of the through member 1 and the vibration generated along the radial direction of the through member 1.

[0052] In one embodiment, a heat preservation layer 11 is sleeved outside the through member 1, and the outer end surface of the heat preservation layer 11 is arranged in a spaced manner with the inner end surface of the sleeve 2.

[0053] That is, the temperature transmission path of the pipeline to the wall 3 includes two paths, one of which is through the penetrating member 1 to the sleeve 2 and then to the wall 3, but the two ends of the sleeve 2 extend to the outside of the wall 3 at least, and communicate with the external space outside the penetrating member 1, so that the sleeve 2 can exchange heat with the outside world to reduce the temperature of the pipeline transmitted to the wall 3.

[0054] The other heat transmission path is that the penetrating member 1 transmits heat to the isolation cavity 21 and then to the wall 3 through the sleeve 2, the isolation cavity 21 is provided with a heat preservation layer 11, and the heat preservation layer 11 is sleeved outside the penetrating member 1, and the temperature of the pipeline to the penetrating member 1 is isolated in the isolation cavity 21 through the heat preservation layer 11, and will not be transmitted to the wall 3.

[0055] It should be noted that the penetrating member 1 can be a section of pipeline, or can be made of other materials, and the penetrating member 1 and the pipeline can be connected by welding, which is not limited here.

[0056] Referring to Figure 1 In one embodiment, the first vibration isolation plate 41 and the second vibration isolation plate 42 are both located in the hole provided in the wall 3.

[0057] That is, the hole provided in the wall 3 is further provided with a space for placing the first vibration isolation plate 41 and the second vibration isolation plate 42, and the wall 3 can form a clamping connection with the first vibration isolation plate 41 and the second vibration isolation plate 42 and improve the installation stability thereof.

[0058] Referring to Figure 5 In another embodiment, at least one of the first vibration isolation plate 41 and the second vibration isolation plate 42 is located outside the hole provided in the wall 3.

[0059] Placing the first vibration isolation plate 41 or the second vibration isolation plate 42 outside the hole of the wall 3 can also achieve the vibration isolation effect.

[0060] The above arrangements of the first vibration isolation plate 41 and the second vibration isolation plate 42 can all weaken the axial and radial vibrations between the penetrating member 1 and the wall 3.

[0061] Referring to Figures 1 to 3 In one embodiment, the first vibration isolation plate 41 is arranged along the axial direction of the penetrating member 1 and includes a first plate body 411 and a second plate body 412, and the second vibration isolation plate 42 is arranged along the radial direction of the penetrating member 1, and the first plate body 411 and the second plate body 412 are located on opposite sides of the second vibration isolation plate 42.

[0062] That is, the first vibration isolation plate 41 cooperates with the second vibration isolation plate 42 to satisfy the vibration isolation effect between the penetrating member 1 and the wall 3 in the axial and radial directions of the penetrating member 1.

[0063] It should be noted that the inner side of the wall 3 is also provided with at least one shear nail 31, one end of the shear nail 31 is embedded in the wall 3, and the other end abuts the partition plate 426.

[0064] Specifically, one end of the shear nail 31 is welded with the partition plate 426, so that the shear nail 31 is used to limit the outer end of the second vibration isolation plate 42 on the one hand, and can also be used to stop the rotation of the penetrating member 1 under the cooperation of the shear nail 31 and the partition plate 426.

[0065] The second vibration isolation plate 42 includes a plurality of vibration isolation units 421, which are uniformly spaced around the outer periphery of the sleeve 2 and form a mounting gap 422 between adjacent vibration isolation units 421, and the mounting gap 422 is filled with a rotation blocking member 423.

[0066] Specifically, the rotation blocking member 423 includes a rotation blocking block 424 and a sealing strip 425, one end of the rotation blocking block 424 is connected with the sleeve 2, and the sealing strip 425 is sealed at the other end of the rotation blocking block 424.

[0067] One end of the rotation blocking block 424 is welded with the sleeve 2, and the rotation blocking member 423 cooperates with the shear nail 31 to stop the rotation of the penetrating member 1.

[0068] Specifically, when the penetrating member 1 rotates, the rotating force is first transmitted to the rotation blocking block 424 through the sleeve 2, the rotation blocking block 424 rotates and presses against the second vibration isolation plate 42, and the second vibration isolation plate 42 is in a static state under the action of the shear nail 31, thereby limiting the rotation of the penetrating member 1.

[0069] Therefore, under the cooperation of the first vibration isolation plate 41, the second vibration isolation plate 42, the shear nail 31 and the rotation blocking member 423, the sleeve 2 and the wall 3 meet the vibration isolation requirements in multiple directions such as axial, radial and rotational directions along the penetrating member 1, and the vibration isolation device not only realizes the stiffness support function for the pipeline, but also meets the complex high-frequency multi-degree-of-freedom vibration isolation requirements.

[0070] It should be noted that the first vibration isolation plate 41 and the second vibration isolation plate 42 are both composite vibration isolation materials, the elastic modulus of the vibration isolation material is in a certain range and is smaller than the elastic modulus of reinforced concrete, and at the same time meets the minimum stiffness requirement of the pipeline support and the requirements of high temperature, fireproof and corrosion resistance in the pipeline anchoring point environment.

[0071] That is, the use of composite vibration isolation materials can overcome the defects of small stiffness and low bearing capacity of traditional spring vibration isolation, and the composite material adjusts itself according to the requirements, and provides different stiffness in different directions by using the anisotropy of composite.

[0072] The sealing strip 425 is provided to avoid the installation gap 422 being filled during concrete pouring, which causes unnecessary interference and affects the vibration isolation function of the vibration isolation device.

[0073] In one embodiment, the first plate body 411 and the second plate body 412 are further provided with a flange 413 and a plurality of stiffening plates 414 mounted outside the flange 413, and the plurality of stiffening plates 414 are arranged at intervals around the outer periphery of the flange 413.

[0074] The flange 413 is used to limit the positions of the first plate body 411, the second plate body 412 and the second vibration isolation plate 42, and the stiffening plates 414 are used to improve the rigidity of the flange 413 itself, thereby improving the limiting effect of the flange 413 on the first plate body 411, the second plate body 412 and the second vibration isolation plate 42.

[0075] With reference to Figure 4 Further, the first vibration isolation plate 41 and the wall body 3 form a filling cavity 415 at the end away from the sleeve 2, and the filling cavity 415 is filled with a flexible material.

[0076] The first vibration isolation plate 41 is not in direct contact with the wall body 3, so as to ensure that the force transmission path is clear and unnecessary interference is avoided, thereby affecting the vibration isolation effect of the vibration isolation assembly 4.

[0077] In one embodiment, the through-penetration piece 1 is integrally arranged with the sleeve 2.

[0078] The sleeve 2 and the through-penetration piece 1 are integrally arranged, which can reduce the processing procedures between the through-penetration piece 1 and the sleeve 2. In some other embodiments, the sleeve 2 and the through-penetration piece 1 can also be detachably mounted in a threaded or clamped manner, which is not limited herein.

[0079] With reference to Figure 6 In some other embodiments, the structures of the flange 413, the first vibration isolation plate 41 and the second vibration isolation plate 42 can be simplified, and it should be noted that the simplified vibration isolation device is also within the protection scope of the present application.

[0080] In summary, the pipeline rigid vibration isolation device provided by the present application has at least the following advantages:

[0081] I. The vibration isolation assembly 4 is made of different composite materials, which can effectively isolate the vibration transmission of a specific high-frequency band, and the vibration isolation assembly 4 has sufficient rigidity and bearing capacity, and can resist external loads.

[0082] II. The first vibration isolation plate 41, the second vibration isolation plate 42, the rotation blocking piece 423 and the shear pin 31 are used in cooperation, which can meet the vibration isolation requirements in multiple directions such as axial, radial and rotational directions along the through-penetration piece 1.

[0083] The foregoing description of the embodiments has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the application to the precise form disclosed. Many modifications and variations are possible in light of the above teaching. It is intended that the scope of the application be limited not with this detailed description, but rather by the claims appended hereto. Unless otherwise specifically defined herein, all terms are to be given their broadest possible interpretation including mod, and equivalents. In this regard, the terms "comprising," "including," "containing," "carrying," "having," "established," "provided," "incorporated" and the like can be used on occasion, merely to refer to the presence of sten or steps of an item, process, procedure, or the like, and can not specify an exhaustive or closed set of such items, processes, procedures or the like. Unless otherwise noted, the use of the terms "a" or "an" to describe an item, process, procedure, or the like, can be construed to cover both the singular and the plural, unless otherwise indicated by context. Unless otherwise indicated, the use of relational terms and / or adjectives, such as "by way of illustration," "by way of example," "example," "exemplary," "any," "about," "approximately," "roughly," "substantially equivalent," "substantially similar," "comprising," "including," "carrying," "having," "established," "provided," "incorporated," and the like, are generally intended to convey similarity of some inherent characteristic, and can or can not be based on exact conditions. Unless otherwise indicated, the use of relational terms and / or adjectives, such as "by way of illustration," "by way of example," "example," "exemplary," "any," "about," "approximately," "roughly," "substantially equivalent," "substantially similar," "comprising," "including," "carrying," "having," "established," "provided," "incorporated," and the like, are generally intended to convey similarity of some inherent characteristic, and can or can not be based on exact conditions.

[0084] Similarly, it is to be noticed that the term "comprising", used in the description, is not intended to exclude other features, steps or components. Thus, as used herein, the term "comprising" is used to indicate that the presence of the named features, steps or components is an option, not a requirement. In other words, the term "comprising" is used herein to mean that the compositions or methods include the recited elements, but not excluding others. It is also to be noted that the use of the singular includes the plural unless otherwise specifically stated.

[0085] While the application has been described with reference to the currently preferred embodiments, those skilled in the art will recognize that changes can be made within the scope of the application.

Claims

1. A pipe vibration isolation device, characterized in that, Pipelines used in nuclear power plants include: A penetrating element and a sleeve fitted over the penetrating element, the sleeve passing through the wall, and an isolation cavity between the sleeve and the penetrating element; A vibration isolation assembly is sleeved on the outside of the sleeve and includes a first vibration isolation plate and a second vibration isolation plate, wherein the first vibration isolation plate and the second vibration isolation plate are arranged along the axial and radial directions of the through member, respectively. The second vibration isolation plate includes multiple vibration isolation units, which are evenly spaced around the outer periphery of the sleeve and have an installation gap between adjacent vibration isolation units; The installation gap is filled with a rotation-resistant component; The resistive component includes a resistive block and a sealing strip; One end of the anti-rotation block is connected to the sleeve, and the sealing strip seals the other end of the anti-rotation block; The first vibration isolation plate is arranged along the axial direction of the through member and includes a first plate body and a second plate body; The second vibration isolation plate is arranged radially along the through member, and the first plate and the second plate are located on opposite sides of the second vibration isolation plate. The second vibration isolation plate is covered with a partition. At least one shear stud is provided on the inner side of the wall, with one end of the shear stud embedded in the wall and the other end abutting against the partition. When the penetrating member rotates, the rotational force is transmitted to the anti-rotation block through the sleeve. The anti-rotation block rotates and presses against the second vibration isolation plate. The second vibration isolation plate is stationary under the action of the shear nail, thereby restricting the rotation of the penetrating member. An insulation layer is provided on the outside of the through-piece, and the outer end face of the insulation layer is spaced apart from the inner end face of the sleeve.

2. The pipeline vibration isolation device according to claim 1, characterized in that, Both the first and second vibration isolation plates are located inside holes opened in the wall; or, At least one of the first vibration isolation plate and the second vibration isolation plate is located outside the hole opened in the wall.

3. The pipeline vibration isolation device according to claim 1, characterized in that, The first plate and the second plate are also provided with flanges and multiple stiffening plates installed on the outside of the flanges on the side opposite to each other; Multiple stiffening plates are spaced apart around the outer periphery of the flange.

4. The pipeline vibration isolation device according to claim 1, characterized in that, The first vibration isolation plate forms a filling cavity between the end opposite to the sleeve and the wall, and the filling cavity is filled with flexible material.

5. The pipeline vibration isolation device according to claim 1, characterized in that, The through-hole component is integrally formed with the sleeve.

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