CN213512633U - Noise reduction device for pipeline - Google Patents

Abstract

The utility model relates to the technical field of pipeline noise reduction, and provides a pipeline noise reduction device, which comprises a concrete base; a damping cushion layer is arranged at the top of the concrete base; the vibration damping cushion layer is provided with a pipeline bracket; the connecting device is arranged on two sides of the concrete base along the axial direction of the pipeline and connects the concrete base with the pipeline bracket; the connecting device comprises a first fixing plate, a first buffering and vibration damping pad, a first stud and a first nut, wherein the first fixing plate is vertically arranged and is fixedly connected with the pipeline bracket, the first buffering and vibration damping pad is arranged between the first fixing plate and the side surface of the concrete base, the first stud is fixed on the concrete base and sequentially penetrates through the first buffering and vibration damping pad and the first fixing plate, and the first nut is in threaded connection with the end part of the first stud. Through setting up damping cushion layer and first buffering damping pad for the vibration wave noise that the buffering was transmitted to the concrete base from the pipeline bracket with the absorption, and then prevent that the vibration wave noise in the compressor outlet pipeline from transmitting to the concrete base through the pipeline bracket and arouse the secondary noise radiation.

Description

Noise reduction device for pipeline

Technical Field

The utility model belongs to the technical field of the technique of making an uproar is fallen to the pipeline and specifically relates to a device of making an uproar falls in pipeline.

Background

When the compressor is started and the transient state changes, the air flow scouring in the outlet pipeline of the compressor can cause the vibration of the pipeline, so that larger vibration wave noise is generated on the outlet pipeline of the compressor, and the vibration wave noise can be transmitted to other devices through a pipeline bracket connected with the outlet pipeline of the compressor, thereby causing secondary noise radiation.

The traditional noise reduction mode is to connect a flexible rubber joint in series on a pipeline so as to reduce the transmission of vibration wave noise and prevent secondary noise radiation. However, the noise reduction method has the following disadvantages: 1. the pipe diameter that can the confession use of disturbing rubber joint is less, and to the disturbing rubber joint that can find the matching with it very difficult for large-scale compressor, this causes large-scale compressor to can not adopt the mode of the disturbing rubber joint of establishing ties on the pipeline to fall and makes an uproar. 2. The installation of the flexible rubber joints is complicated and requires periodic replacement, which results in high installation and maintenance costs.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a device of making an uproar falls in pipeline is provided, prevent that the vibration wave noise in the compressor outlet pipeline from transmitting to other devices and arousing the secondary noise radiation through the pipeline bracket.

The utility model provides a technical scheme that its technical problem adopted is: the pipeline noise reduction device comprises a concrete base; a damping cushion layer is arranged at the top of the concrete base; a pipeline bracket is arranged on the vibration damping cushion layer; the connecting device is arranged on two sides of the concrete base along the axial direction of the pipeline and connects the concrete base with the pipeline bracket;

the connecting device comprises a first fixing plate, a first buffering and vibration damping pad, a first stud and a first nut, wherein the first fixing plate is vertically arranged and is fixedly connected with the pipeline bracket, the first buffering and vibration damping pad is arranged between the first fixing plate and the side surface of the concrete base, the first stud is fixed on the concrete base and sequentially penetrates through the first buffering and vibration damping pad and the first fixing plate, and the first nut is in threaded connection with the end part of the first stud.

Furthermore, a first mounting hole is formed in the position, corresponding to the first stud, of the first fixing plate; a first buffering vibration damping sleeve is arranged in the first mounting hole; the first stud penetrates through the inner hole of the first buffer damping sleeve; a first isolation vibration damping pad sleeved on the first stud is arranged between the first fixing plate and the first nut.

Furthermore, connecting device still includes the first welt of setting between first buffering damping pad and concrete base side, be provided with the first through-hole that supplies first double-screw bolt to pass on the first welt, first double-screw bolt passes in the first through-hole from the first welt.

Furthermore, limiting devices positioned at two sides of the pipeline bracket are arranged at the top of the concrete base along a direction vertical to the axial direction of the pipeline;

the limiting device comprises a second fixing plate which is vertically arranged and fixed at the top of the concrete base, a second buffering vibration reduction plate arranged between the second fixing plate and the pipeline bracket, a second bolt which sequentially penetrates through the second buffering vibration reduction plate and the second fixing plate, and a second nut which is in threaded connection with the end part of the second bolt.

Furthermore, a second mounting hole is formed in the second fixing plate at a position corresponding to the second bolt; a second buffering vibration damping sleeve is arranged in the second mounting hole; the second bolt penetrates through an inner hole of the second buffer damping sleeve; and a second isolation damping pad sleeved on the second bolt is arranged between the second fixing plate and the second nut.

Furthermore, the limiting device also comprises an embedded plate which is horizontally arranged and embedded at the top of the concrete base; and the bottom of the second fixing plate is fixedly connected with the embedded plate.

Furthermore, an accommodating cavity for accommodating the head of the second bolt is arranged on the second buffering vibration damping plate at a position corresponding to the head of the second bolt.

Furthermore, the limiting device further comprises a third buffering vibration damping plate arranged between the second fixing plate and the second buffering vibration damping plate; and a second through hole for a second bolt to pass through is formed in the third buffering vibration reduction plate, and the second bolt passes through the second through hole of the third buffering vibration reduction plate.

The utility model has the advantages that: the pipeline noise reduction device of the embodiment of the utility model connects the pipeline bracket and the concrete base together through the connecting device, thereby reducing the vibration amplitude of the outlet pipeline of the compressor caused by the starting or transient state change of the compressor and further reducing the vibration wave noise in the outlet pipeline of the compressor; through the damping bed course that sets up at the concrete base top for the vibration wave noise that the pipeline bracket transmitted to the concrete base is followed in buffering and absorption, through the first buffering damping pad that sets up between first fixed plate and concrete base, for the vibration wave noise that the pipeline bracket transmitted to the concrete base through connecting device is passed through with the absorption to the buffering, and then prevents that the vibration wave noise in the compressor outlet pipeline from transmitting to the concrete base through the pipeline bracket and arouse secondary noise radiation. Compared with the prior art, the utility model discloses device of making an uproar falls in pipeline, applicable compressor outlet pipeline in arbitrary pipe diameter to the installation is simple, and it is convenient to maintain, and installation and maintenance cost are low.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below; it is obvious that the drawings in the following description are only some of the embodiments described in the present application, and that other drawings can be derived from these drawings by a person skilled in the art without inventive effort.

Fig. 1 is a schematic structural diagram of a noise reduction device for a pipeline according to an embodiment of the present invention;

FIG. 2 is a view taken from the direction A of FIG. 1;

fig. 3 is a schematic structural view of the pipe bracket of the embodiment of the present invention after being connected to the compressor outlet pipe;

FIG. 4 is an enlarged view of the connection device of FIG. 1;

FIG. 5 is a cross-sectional view B-B of FIG. 4;

FIG. 6 is an enlarged view of the stop device of FIG. 2;

fig. 7 is a cross-sectional view C-C of fig. 6.

The reference numbers in the figures are: 1-concrete foundation, 2-damping cushion, 3-pipeline bracket, 4-pipeline axial direction, 5-connecting device, 6-limiting device, 7-compressor outlet pipeline, 31-bottom plate, 32-supporting plate component, 51-first fixing plate, 52-first damping cushion, 53-first stud, 54-first nut, 55-first damping cushion sleeve, 56-first damping cushion isolation, 57-first lining plate, 58-first reinforcing plate, 61-second fixing plate, 62-second damping cushion, 63-second bolt, 64-second nut, 65-second damping cushion sleeve, 66-second damping cushion isolation, 67-embedded plate, 68-containing cavity, 69-third damping cushion, 70-second stiffener plate.

Detailed Description

In order to make the present invention better understood by those skilled in the art, the present invention will be further described with reference to the accompanying drawings and examples. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. In case of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other.

Fig. 1 and fig. 2 are schematic structural diagrams of a noise reduction device for a pipeline according to an embodiment of the present invention.

Referring to fig. 1 and 2, a pipeline noise reduction device provided in the embodiment of the present invention includes a concrete base 1; the top of the concrete base 1 is provided with a damping cushion layer 2; the damping cushion layer 2 is provided with a pipeline bracket 3; the pipeline connecting device is characterized by also comprising connecting devices 5 which are arranged on two sides of the concrete base 1 along the axial direction 4 of the pipeline and connect the concrete base 1 with the pipeline bracket 3;

the connecting device 5 comprises a first fixing plate 51 which is vertically arranged and is fixedly connected with the pipeline bracket 3, a first buffering vibration damping pad 52 which is arranged between the first fixing plate 51 and the side surface of the concrete base 1, a first stud 53 which is fixed on the concrete base 1 and sequentially penetrates through the first buffering vibration damping pad 52 and the first fixing plate 51, and a first nut 54 which is in threaded connection with the end part of the first stud 53.

The pipeline noise reduction device provided by the embodiment of the utility model firstly plays a supporting role for supporting the outlet pipeline 7 of the compressor; and secondly, a noise reduction function for reducing vibration wave noise generated in the compressor outlet duct 7 due to the start-up or transient state change of the compressor and preventing the vibration wave noise in the compressor outlet duct 7 from being transmitted to the concrete substructure 1 through the duct bracket 3 to cause secondary noise radiation.

Referring to fig. 1 and 2, the X direction and the Y direction are horizontal directions perpendicular to each other, and the Z direction is a vertical direction, where the X direction is a pipe axial direction 4. The utility model discloses device of making an uproar falls in pipeline, including concrete base 1, damping bed course 2, pipeline bracket 3 and connecting device 5.

The concrete base 1 is substantially cuboid and serves as a support for the pipe carrier 3 and the compressor outlet pipe 7 welded to the pipe carrier 3. The size of the concrete base 1 along the X direction is smaller than that of the pipeline bracket 3 along the X direction, so that two ends of the pipeline bracket 3 along the X direction are positioned outside the concrete base 1; the size of the concrete base 1 along the Y direction is larger than that of the pipeline bracket 3 along the Y direction, so that two ends of the pipeline bracket 3 along the Y direction are positioned right above the concrete base 1.

The pipe bracket 3 is formed by welding steel plates, has enough strength and rigidity, and is used for being welded at the bottom of the outer surface of the compressor outlet pipe 7 to support the compressor outlet pipe 7.

For example, the pipe bracket 3 includes a bottom plate 31 horizontally disposed, and a support plate assembly 32 welded on the bottom plate 31, where the support plate assembly 32 is composed of a plurality of vertical plates vertically disposed, and a projection of a top of the support plate assembly 32 on a reference plane perpendicular to the X direction is a downward-concave arc-shaped structure. When the compressor outlet pipe 7 is placed on the pipe bracket 3, any position on the top of the backup plate assembly 32 is in contact with the outer surface of the compressor outlet pipe 7.

The vibration reduction cushion layer 2 plays roles of supporting, isolating, buffering and reducing vibration, and has a better damping vibration isolation effect. The damping cushion layer 2 can be made of rubber, polyurethane, composite fiber and other materials with damping effect.

For example, the damping cushion layer 2 is a composite fiber damping cushion layer, which is made of chemical fibers such as polyester fibers and acrylic fibers through glue-free technology. The damping cushion layer 2 has better vibration isolation effect on low, medium and high frequency noises, and the surface density of the product is only 1000g/m²The vibration isolation device has light weight and convenient construction, can be cut into required sizes and used in a superposition mode to obtain vibration isolation effects of different degrees.

In this embodiment, the damping cushion layer 2 is disposed on the top of the concrete base 1, and the pipe bracket 3 is disposed on the damping cushion layer 2. Not only keep apart pipeline bracket 3 and concrete base 1 through damping bed course 2 like this, avoid pipeline bracket 3 direct and concrete base 1 contact, through damping bed course 2 buffering and absorption moreover from the vibration wave noise of pipeline bracket 3 downward transmission to prevent that the vibration wave noise in compressor outlet pipeline 7 from directly transmitting to concrete base 1 through pipeline bracket 3 and arouse the secondary noise radiation.

The damping cushion layer 2 can be directly placed on the top of the concrete base 1, the damping cushion layer 2 can be connected with the concrete base 1 through a connecting piece, the damping cushion layer 2 can be connected with the bottom plate 31 of the pipeline bracket 3 through a connecting piece, and specific limitation is not needed here.

The thickness of the damping cushion layer 2 is set according to the damping material and the diameter of the pipeline, so that the sufficient bearing capacity is ensured, and a better damping effect is ensured. Of course, the greater the nominal diameter DN of the compressor outlet duct 7, the thicker the thickness T of the damping shim 2. For example, taking the composite fiber damping cushion layer as an example, when DN is less than 150mm, T is more than or equal to 10mm and less than or equal to 20 mm; when DN is more than or equal to 150mm and less than 350mm, T is more than or equal to 15mm and less than or equal to 30 mm; when DN is more than or equal to 350mm and less than 500mm, T is more than or equal to 30mm and less than or equal to 50 mm; when DN is more than or equal to 500mm, T is more than or equal to 50 mm. The above are only a few arrangements between the nominal diameter of the compressor outlet duct 7 and the thickness of the damping shim 2, but not limited thereto.

The number of the connecting devices 5 is two, and the two connecting devices 5 are arranged on two sides of the concrete base 1 along the pipeline axial direction 4. Connect together pipeline bracket 3 and concrete base 1 through two connecting device 5, not only realized stable being connected between pipeline bracket 3 and the concrete base 1, to pipeline bracket 3X to spacing, can reduce the vibration range of compressor outlet pipeline 7 that arouses because compressor starts or transient state changes moreover, and then reduced the vibration wave noise in compressor outlet pipeline 7.

Fig. 4 and 5 are schematic structural views of a connection device in an embodiment of the present invention.

Referring to fig. 4 and 5, the connecting device 5 includes a first fixing plate 51, a first cushion pad 52, a first stud 53, and a first nut 54.

The first fixing plate 51 mainly plays a role in connection and limiting, and in order to ensure the strength of the first fixing plate 51, the first fixing plate 51 is made of a steel plate. The first fixing plate 51 is arranged perpendicular to the X direction, and the top of the first fixing plate 51 is welded to the bottom plate 31 of the pipe bracket 3. Preferably, a first reinforcing rib plate 58 is welded between the first fixing plate 51 and the bottom plate 31 of the pipeline bracket 3, so as to improve the strength and rigidity of the connection between the first fixing plate 51 and the bottom plate 31. Further, the top of the first reinforcing rib plate 58 is welded to the lower surface of the bottom plate 31 of the pipe bracket 3.

The first buffer vibration-damping pad 52 plays roles of isolation, buffering and vibration damping, and has a better damping vibration-isolating effect. The first cushion pad 52 may be made of materials with vibration damping effect, such as silica gel, rubber, felt, nylon, polyurethane, and composite fiber. For example, the first cushion pad 52 is a composite fiber cushion pad made of chemical fibers such as polyester fibers and acrylic fibers through a non-glue technique. The thickness of the first buffering and damping pad 52 is 3-10 mm, preferably 6 mm.

The first buffering vibration damping pad 52 is arranged between the first fixing plate 51 and the side surface of the concrete base 1, so that the first fixing plate 51 is isolated from the concrete base 1 through the first buffering vibration damping pad 52, the first fixing plate 51 is prevented from directly contacting the concrete base 1, and vibration wave noise transmitted from the pipeline bracket 3 to the concrete base 1 through the first fixing plate 51 can be buffered and absorbed through the first buffering vibration damping pad 52, so that the vibration wave noise in the compressor outlet pipeline 7 is prevented from being transmitted to the concrete base 1 through the first fixing plate 51 and causing secondary noise radiation.

The number of the first studs 53 in the connecting device 5 is at least one; one end of the first stud 53 is embedded in the concrete base 1, the other end of the first stud 53 sequentially penetrates through the first buffering vibration damping pad 52 and the first fixing plate 51 and then is in threaded connection with the first nut 54, and after the first nut 54 is screwed down, the pipeline bracket 3 is stably connected with the concrete base 1.

In this embodiment, referring to fig. 5, the number of the first studs 53 is two, two first nuts 54 are connected to each first stud 53 through threads, and after the two first nuts 54 are screwed down, self-locking is achieved through cooperation between the two first nuts 54.

Fig. 3 is a schematic structural diagram of the embodiment of the present invention after the pipe bracket 3 is connected to the compressor outlet pipe 7. Referring to fig. 3, the compressor outlet pipe 7 is seated on the top of the pipe bracket 3, and the top of the pipe bracket 3 is welded to the bottom of the outer surface of the compressor outlet pipe 7. The pipeline noise reduction device provided by the embodiment of the utility model connects the pipeline bracket 3 and the concrete base 1 together through the connecting device 5, so that the vibration amplitude of the compressor outlet pipeline 7 caused by the starting or transient state change of the compressor is reduced, and the vibration wave noise in the compressor outlet pipeline 7 is further reduced; through the damping bed course 2 that sets up at concrete foundation 1 top for the shock wave noise that the pipeline bracket 3 transmitted to concrete foundation 1 is buffered and absorbed, through the first buffering damping pad 52 that sets up between first fixed plate 51 and concrete foundation 1, for the shock wave noise that pipeline bracket 3 transmitted to concrete foundation 1 through connecting device 5 is buffered and absorbed, and then prevents that the shock wave noise in compressor outlet pipeline 7 from transmitting to concrete foundation 1 through pipeline bracket 3 and arouse secondary noise radiation. Compared with the prior art, the utility model discloses device of making an uproar falls in pipeline, applicable compressor outlet pipeline 7 in arbitrary pipe diameter to the installation is simple, and it is convenient to maintain, and installation and maintenance cost are low.

The first stud 53 and the first nut 54 mainly serve as a connection, and they are made of a metal material. In the above embodiment, the first stud 53 and the first nut 54 are in direct contact with the first fixing plate 51, so that a small part of vibration wave noise is transmitted to the concrete foundation 1 through the pipe bracket 3, the first fixing plate 51, the first nut 54, and the first stud 53 in sequence.

In order to avoid the above situation, as a preferred embodiment, with continued reference to fig. 4 and 5, a first mounting hole is provided on the first fixing plate 51 at a position corresponding to the first stud 53; a first buffer damping sleeve 55 is arranged in the first mounting hole; the first stud 53 passes through the inner hole of the first damping sleeve 55; a first isolation vibration damping pad 56 sleeved on the first stud 53 is arranged between the first fixing plate 51 and the first nut 54.

The first buffer vibration damping sleeve 55 and the first isolation vibration damping pad 56 have the functions of isolation, buffering and vibration damping, and have better damping vibration isolation effect. The first buffer damping sleeve 55 and the first isolation damping pad 56 can be made of materials with damping effect, such as silica gel, rubber, felt, nylon, polyurethane, composite fiber, and the like. For example, the first buffering vibration damping sleeve 55 is a silica gel sleeve, and the first isolating vibration damping pad 56 is a silica gel pad.

The utility model discloses device of making an uproar falls in pipeline, through setting up first buffering damping cover 55 and first isolation damping pad 56, so not only with first fixed plate 51 and first double-screw bolt 53, first nut 54 is kept apart, avoid first fixed plate 51 and first double-screw bolt 53, first nut 54 direct contact, and the first buffering damping cover 55 of accessible and first isolation damping pad 56 cushion and absorb the vibration wave noise of transmission from first fixed plate 51, avoid the vibration wave noise to pass through pipeline bracket 3 in proper order, first fixed plate 51, first nut 54, first double-screw bolt 53 transmits to concrete base 1.

With continued reference to fig. 4 and 5, the connecting device 5 further includes a first lining plate 57 disposed between the first cushion pad 52 and the side of the concrete foundation 1, a first through hole for the first stud 53 to pass through is disposed on the first lining plate 57, and the first stud 53 passes through the first through hole on the first lining plate 57. The first liner plate 57 is preferably a steel plate.

The utility model discloses device of making an uproar falls in pipeline, through set up first welt 57 between first buffering damping pad 52 and concrete base 1 side, be used for protecting first buffering damping pad 52 towards concrete base 1's surface, the pressure of dispersion concrete base 1 side to first buffering damping pad 52 has been solved because concrete base 1's side unevenness leads to the fact the great problem of local pressure to first buffering damping pad 52, improve the life of first buffering damping pad 52.

With continued reference to fig. 1 and 2, in the noise reduction device for a pipeline according to the embodiment of the present invention, the top of the concrete base 1 is provided with the limiting devices 6 located at two sides of the pipeline bracket 3 along the direction perpendicular to the axial direction 4 of the pipeline; stop device 6 includes vertical setting, and fixes the second fixed plate 61 at concrete base 1 top, sets up second buffering damping plate 62 between second fixed plate 61 and pipeline bracket 3, passes second buffering damping plate 62 and second fixed plate 61's second bolt 63, threaded connection is at the second nut 64 of second bolt 63 tip in proper order.

The number of the limiting devices 6 is two, and the two limiting devices 6 are arranged on two sides of the pipeline bracket 3 along the Y direction. The two limiting devices 6 limit the position of the pipeline bracket 3 in the Y direction, so that the pipeline bracket 3 is prevented from generating displacement in the Y direction, the vibration amplitude of the compressor outlet pipeline 7 caused by the starting or instantaneous state change of the compressor is reduced, and the vibration wave noise in the compressor outlet pipeline 7 is further reduced.

Fig. 6 and 7 are schematic structural views of the limiting device 6 in the embodiment of the present invention.

Referring to fig. 6 and 7, the position limiting device 6 includes a second fixing plate 61, a second damping plate 62, a second bolt 63, and a second nut 64.

The second fixing plate 61 mainly plays a role in connection and limiting, and the second fixing plate 61 is made of a steel plate for ensuring the strength of the second fixing plate 61. The second fixing plate 61 is perpendicular to the Y direction, and the bottom of the second fixing plate 61 is fixedly connected with the top of the concrete base 1.

The second buffering vibration attenuation plate 62 plays roles of isolation, buffering and vibration attenuation, and has a better damping vibration isolation effect. The second damping plate 62 may be made of a material having a damping effect, such as silica gel, rubber, felt, nylon, polyurethane, or composite fiber. For example, the second cushion damping plate 62 is a composite fiber cushion damping pad made of chemical fibers such as polyester fibers and acrylic fibers by a glue-free technique. The thickness of the second buffering vibration attenuation plate 62 is 3-10 mm, and preferably 6 mm.

The second damping plate 62 is disposed between the second fixing plate 61 and the pipe bracket 3, for example, the second damping plate 62 may be disposed between the second fixing plate 61 and the support plate assembly 32 of the pipe bracket 3, and the second damping plate 62 may also be disposed between the second fixing plate 61 and the bottom plate 31 of the pipe bracket 3. Thus, the second fixing plate 61 is isolated from the pipe bracket 3 by the second buffering vibration damping plate 62, the second fixing plate 61 is prevented from directly contacting the pipe bracket 3, and the vibration wave noise transmitted from the pipe bracket 3 to the second fixing plate 61 can be buffered and absorbed by the second buffering vibration damping plate 62, so that the vibration wave noise in the compressor outlet pipe 7 is prevented from being transmitted to the concrete base 1 through the second fixing plate 61 to cause secondary noise radiation.

The number of the second bolts 63 in the limiting device 6 is at least one; the second bolt 63 sequentially penetrates through the second damping plate 62 and the second fixing plate 61 and then is in threaded connection with the second nut 64, and after the second nut 64 is screwed down, the second damping plate 62 and the second fixing plate 61 are connected together.

In this embodiment, referring to fig. 7, the number of the second bolts 63 is two, each second bolt 63 is connected with two second nuts 64 through threads, and after the two second nuts 64 are screwed, self-locking is achieved through cooperation between the two second nuts 64.

The second bolt 63 and the second nut 64 mainly function as a connection, and they are made of a metal material. When the head of the second bolt 63 contacts the pipe bracket 3 due to the installation error, a small amount of vibration wave noise is transmitted to the concrete foundation 1 through the pipe bracket 3, the second bolt 63, the second nut 64, and the second fixing plate 61 in sequence.

In order to avoid the above situation, as a preferred embodiment, with continued reference to fig. 6 and 7, a second mounting hole is provided on the second fixing plate 61 at a position corresponding to the second bolt 63; a second buffer damping sleeve 65 is arranged in the second mounting hole; the second bolt 63 passes through the inner hole of the second buffer damping sleeve 65; a second isolation vibration damping pad 66 sleeved on the second bolt 63 is arranged between the second fixing plate 61 and the second nut 64.

The second buffer vibration damping sleeve 65 and the second isolation vibration damping pad 66 have the functions of isolation, buffering and vibration damping, and have better damping vibration isolation effect. The second buffer damping sleeve 65 and the second isolation damping pad 66 can be made of materials with damping effect, such as silica gel, rubber, felt, nylon, polyurethane, composite fiber and the like. For example, the second cushion damper sleeve 65 is a felt sleeve, and the second isolation damper pad 66 is a felt pad.

The utility model discloses device of making an uproar falls in pipeline, through setting up second buffering damping cover 65 and second isolation damping pad 66, so not only with second fixed plate 61 and second bolt 63, second nut 64 keeps apart, avoid second fixed plate 61 and second bolt 63, second nut 64 direct contact, but also accessible second buffering damping cover 65 keeps apart damping pad 66 with the second and cushions and absorb the vibration wave noise of transmission from second bolt 63, avoid the vibration wave noise to pass through pipeline bracket 3 in proper order, second bolt 63, second nut 64, second fixed plate 61 transmits to concrete base 1.

With continued reference to fig. 6 and 7, the limiting device 6 further comprises an embedded plate 67 which is horizontally arranged and embedded in the top of the concrete base 1; the bottom of the second fixing plate 61 is fixedly connected with the pre-buried plate 67.

The pre-buried plate 67 is a horizontally arranged steel plate which is pre-buried at the top of the concrete base 1 so as to realize stable connection with the concrete base 1. The bottom of the second fixing plate 61 is welded to the pre-buried plate 67. Preferably, a second reinforcing rib plate 70 is welded between the second fixing plate 61 and the pre-buried plate 67, so as to improve the strength and rigidity of the connection between the second fixing plate 61 and the pre-buried plate 67.

The second damping plate 62 is provided with a receiving cavity 68 for receiving the head of the second bolt 63 at a position corresponding to the head of the second bolt 63. After the second nut 64 is tightened, the head of the second bolt 63 is received in the receiving cavity 68 to prevent the head of the second bolt 63 from contacting the pipe bracket 3 due to an installation error.

The limiting device 6 further comprises a third damping plate 69 arranged between the second fixing plate 61 and the second damping plate 62; the third damping plate 69 is provided with a second through hole for the second bolt 63 to pass through, and the second bolt 63 passes through the second through hole of the third damping plate 69.

The third damping plate 69 plays a role in isolation, buffering and vibration reduction, and has a better damping and vibration isolation effect. The third damping plate 69 may be made of a material having a damping effect, such as silica gel, rubber, felt, nylon, polyurethane, or composite fiber. For example, the third cushion and vibration damping plate 69 is a composite fiber cushion and vibration damping pad made of chemical fibers such as polyester fibers and acrylic fibers by a glue-free technique. The thickness of the third damping plate 69 is 3 to 10mm, preferably 6 mm.

The utility model discloses device of making an uproar falls in pipeline through setting up third buffering damping plate 69, under third buffering damping plate 69 and second buffering damping plate 62 matched with effect, has further increased stop device 6's vibration isolation effect. Of course, the third damping plate 69 and the second damping plate 62 may be damping plates made of the same material, or damping plates made of different materials, and are not limited in particular.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The pipeline noise reduction device is characterized by comprising a concrete base (1); a damping cushion layer (2) is arranged at the top of the concrete base (1); a pipeline bracket (3) is arranged on the vibration damping cushion layer (2); the pipeline connecting device is characterized by also comprising connecting devices (5) which are arranged on two sides of the concrete base (1) along the axial direction (4) of the pipeline and are used for connecting the concrete base (1) with the pipeline bracket (3);

connecting device (5) including vertical setting, and with pipeline bracket (3) fixed connection's first fixed plate (51), set up first buffering damping pad (52) between first fixed plate (51) and concrete base (1) side, fix on concrete base (1), and pass first buffering damping pad (52) and first double-screw bolt (53) of first fixed plate (51) in proper order, threaded connection is at first nut (54) of first double-screw bolt (53) tip.

2. The pipe noise reduction device according to claim 1, wherein a first mounting hole is formed in the first fixing plate (51) at a position corresponding to the first stud (53); a first buffer damping sleeve (55) is arranged in the first mounting hole; the first stud (53) penetrates through the inner hole of the first buffer damping sleeve (55); a first isolation vibration damping pad (56) sleeved on the first stud (53) is arranged between the first fixing plate (51) and the first nut (54).

3. The pipe noise reduction device according to claim 1 or 2, wherein the connecting device (5) further comprises a first lining plate (57) arranged between the first damping pad (52) and the side surface of the concrete base (1), a first through hole for the first stud (53) to pass through is arranged on the first lining plate (57), and the first stud (53) passes through the first through hole on the first lining plate (57).

4. The pipe noise reduction device according to claim 1, wherein the top of the concrete base (1) is provided with limiting devices (6) on two sides of the pipe bracket (3) along a direction perpendicular to the axial direction (4) of the pipe;

stop device (6) including vertical setting, and fix second fixed plate (61) at concrete foundation (1) top, set up second buffering damping plate (62) between second fixed plate (61) and pipeline bracket (3), pass second buffering damping plate (62) and second bolt (63) of second fixed plate (61) in proper order, threaded connection is at second nut (64) of second bolt (63) tip.

5. The duct noise reduction device according to claim 4, wherein a second mounting hole is provided at a position corresponding to the second bolt (63) on the second fixing plate (61); a second buffer damping sleeve (65) is arranged in the second mounting hole; the second bolt (63) penetrates through an inner hole of the second buffer damping sleeve (65); and a second isolation damping pad (66) sleeved on the second bolt (63) is arranged between the second fixing plate (61) and the second nut (64).

6. The pipeline noise reduction device according to claim 4, wherein the limiting device (6) further comprises an embedded plate (67) which is horizontally arranged and embedded in the top of the concrete base (1); the bottom of the second fixing plate (61) is fixedly connected with the embedded plate (67).

7. A pipe noise reduction device according to claim 4, wherein a receiving cavity (68) for receiving the head of the second bolt (63) is provided at a position corresponding to the head of the second bolt (63) on the second damping plate (62).

8. The pipe noise reduction device according to claim 4, 5, 6 or 7, wherein the position limiting device (6) further comprises a third damping plate (69) disposed between the second fixing plate (61) and the second damping plate (62); and a second through hole for a second bolt (63) to pass through is formed in the third buffering vibration damping plate (69), and the second bolt (63) passes through the second through hole of the third buffering vibration damping plate (69).

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