CN110735987A

CN110735987A - Pipeline vibration absorber and air conditioning unit

Info

Publication number: CN110735987A
Application number: CN201911167607.8A
Authority: CN
Inventors: 范斌; 姜国璠; 陈乐辉
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-11-25
Filing date: 2019-11-25
Publication date: 2020-01-31

Abstract

The embodiment of the pipeline vibration absorber comprises a pipeline installation part and at least vibration absorption cantilever members, wherein an installation cavity matched with a pipeline is formed in the pipeline installation part, and at least vibration absorption cantilever members are symmetrically arranged outside the pipeline installation part.

Description

Pipeline vibration absorber and air conditioning unit

Technical Field

The invention relates to the technical field of pipelines, in particular to pipeline vibration absorbers and an air conditioning unit.

Background

In a refrigerant system of an air conditioning unit, for example, a pipeline is used for conveying refrigerants, and the pressure of the refrigerants in the pipeline can be changed continuously, so that the pipeline is vibrated, and the problems of noise and pipeline damage are caused.

The vibration frequency of different pipelines is different, so that it is troublesome to buy different pipeline vibration-absorbing elements according to the vibration frequency of the pipelines, which causes the inconvenience in using the pipeline vibration-absorbing elements.

Disclosure of Invention

The embodiment of the invention provides pipeline vibration absorbers and an air conditioning unit, and aims to solve the technical problem that a pipeline damping element in the prior art is poor in universality.

The embodiment of the application provides an pipeline vibration absorber, which comprises a pipeline mounting part and at least pairs of vibration-absorbing cantilever members, wherein a mounting cavity matched with a pipeline is formed in the pipeline mounting part, the pipeline mounting part is used for being mounted on the pipeline, the vibration-absorbing cantilever members are symmetrically mounted on the outer portion of the pipeline mounting part, each vibration-absorbing cantilever member comprises a cantilever part and a counterweight part, the cantilever parts are rotatably mounted on the pipeline mounting part, and the counterweight parts are mounted at the tail ends of the cantilever parts.

In embodiments, the pipe vibration absorber further includes a locking member mounted between the cantilever member and the pipe mount, the locking member for securing the cantilever member after rotation of the cantilever member.

In embodiments, the locking member includes a sliding support rotatably mounted to the duct mounting member, the sliding support having a slot defined therein, and a locking member movably mounted to the slot and coupled to the cantilevered member, the locking member being locked to the slot upon rotation of the cantilevered member.

In the embodiments, cantilever members have at least two locking members symmetrically disposed thereon.

In the embodiments, the duct mounting member is provided with a pivot shaft on which the cantilever member is rotatably mounted.

In embodiments, the duct mount is comprised of at least two duct mount segments.

In embodiments, two adjacent pipe mounting segments are connected by a connector.

In the embodiments, the shock absorbing cantilever members are four and the four shock absorbing cantilever members are mounted on the pipe mount in a cross-wise symmetry.

In embodiments, the mounting cavity is circular or polygonal.

The application also provides air conditioning units, including the pipeline, install foretell pipeline bump leveller on the pipeline.

The pipeline vibration absorber is based on the basic principle that when the structure vibrates, the pipeline vibration absorber is driven to vibrate, and the inertia force generated by the motion of the pipeline vibration absorber is reflected to the structure, so that the vibration of a main structure is effectively inhibited.

Drawings

The accompanying drawings, which form a part hereof , are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description, serve to explain the invention and not to limit the invention.

Fig. 1 is a schematic view of the overall structure of an embodiment of a pipe vibration absorber according to the present invention;

fig. 2 is an exploded schematic view of the pipe vibration absorber of fig. 1;

FIG. 3 is a schematic view of the pipe vibration absorber of FIG. 1 with the weight removed;

fig. 4 is a schematic structural view of the vibration absorbing cantilever member of the pipe vibration absorber of fig. 3 retracted;

fig. 5 is a structural schematic view of a pipe mounting part of the pipe vibration absorber of fig. 3.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further with reference to the following embodiments and accompanying drawings.

In order to solve the technical problem of poor universality of pipeline damping elements in the prior art, the technical scheme of the invention considers the actual situation that the length of a real pipeline is not , and the resonance frequency difference of the pipeline is very large due to installation environment and external excitation, so that mechanical adjustability design is carried out, the device can be correspondingly fixed-frequency adjusted according to actual resonance frequency points, and the actual requirement that a single device is suitable for different pipeline vibration characteristics is met.

Specifically, as shown in fig. 1, 2, 3 and 4, the pipe vibration absorber of the present invention includes a pipe mounting member 10 and at least pairs of vibration absorbing cantilever members 20, wherein a mounting cavity a adapted to a pipe is formed in the pipe mounting member 10, and at least pairs of vibration absorbing cantilever members 20 are symmetrically mounted on the outside of the pipe mounting member 10. the vibration absorbing cantilever members 20 include a cantilever part 21 and a weight part 22, wherein the cantilever part 21 is rotatably mounted on the pipe mounting member 10, and the weight part 22 is mounted on the distal end of the cantilever part 21.

The technical scheme of the invention is that the pipeline vibration absorber is basically based on the principle that when the structure vibrates, the pipeline vibration absorber is driven to vibrate, and the inertia force generated by the motion of the pipeline vibration absorber is reflected to the structure, so that the vibration of the main structure is effectively inhibited.

Specifically, the pipeline installation member 10 is used as a key supporting structure to be tightly attached and fixed with a target pipeline, the cantilever member 21 is used as a main elastic element to play a role in vibration transmission, and the counterweight member 22 is used as a vibration energy bearing structure.

Optionally, the pipeline vibration absorber adopts an adjustable all-metal structure design. The damping device can be efficiently used in various severe environments such as high humidity, high salt fog, high sand dust and the like, and the requirement of high reliability and damping is met.

Alternatively, the weight member 22 is mounted on the cantilever member 21 by post-bolting or welding.

As shown in fig. 2, 3 and 4, in the solution of the present embodiment, the pipe vibration reducer further includes a locking member 30, the locking member 30 is installed between the cantilever part 21 and the pipe installation part 10, after the rotation of the cantilever part 21 adjusts the vibration absorption frequency of the vibration absorption cantilever member 20, the locking member 30 fixes the cantilever part 21, optionally, in the solution of the present embodiment, the locking member 30 includes a sliding support frame 31 and a locking part 32, the sliding support frame 31 is rotatably installed on the pipe installation part 10, a sliding slot is opened on the sliding support frame 31, the locking part 32 is movably installed on the sliding slot and connected to the cantilever part 21, and the locking part 32 is locked on the sliding slot after the rotation of the cantilever part 21.

Optionally, the cantilever member 21 may swing in a range of 0 to 120 ° with respect to the pipe installation member 10, and the final swing position is determined by the target pipe resonance dominant frequency and the frequency fixing adjustment of the present invention. As shown in fig. 4, in a state where the cantilever member 21 and the pipe attachment member 10 are bonded, the fixed frequency value is high at this time; when the vibration reduction device extends outwards and rotates, the fixed frequency value is gradually reduced, an optimal vibration reduction frequency point is reached at a certain position, and the locking component 30 is fastened and installed to finally realize fixed frequency vibration reduction on a certain pipeline.

Preferably, the cantilevered members 21 are arcuate and conform closely to the outer surface of the pipe fitting 10.

As shown in fig. 2, at least two locking members 30 are symmetrically disposed on the boom parts 21 to enhance the locking effect on the boom parts 21.

Alternatively, as shown in fig. 2 and 5, the pipe installation member 10 is provided with a rotation shaft 12, and the cantilever member 21 is rotatably mounted on the rotation shaft 12. By mounting the cantilever member 21 on the rotary shaft 12, the cantilever member 21 can be rotated more stably.

As shown in fig. 5, in the solution of the present embodiment, the duct mounting member 10 is composed of four duct mounting segments 11. Optionally, two adjacent pipeline installation segments 11 are connected by a connector. As a key supporting structure, the pipeline mounting part 10 does not need to be welded or disassembled and assembled for a target pipeline, the pipeline mounting split block 11 is directly adopted to be jointly arranged and mounted, the pipeline mounting split block is connected with the pipeline mounting split block through a square boss and a concave fixing groove, a single part is responsible for the 90-degree area range of the pipeline, and finally fastening and mounting are carried out through hexagon socket head bolts. As a further alternative, duct mounting member 10 may also be comprised of at least two duct mounting segments 11. More preferably, the pipe fitting member 10 has a groove pattern formed on an inner wall thereof to increase contact friction with the pipeline, thereby realizing a rigid connection. In addition, the top of the pipeline installation splicing block 11 is provided with an installation hole for installing the sliding support frame 31 and the locking part 32, and only the socket head cap screws of the pipeline installation splicing block 11 need to be portable and disassembled in the disassembling and assembling process.

As shown in fig. 3, in the present embodiment, the number of the vibration absorbing cantilever members 20 is four, and four vibration absorbing cantilever members 20 are installed on the duct installation member 10 in a cross-symmetrical manner. As other alternative embodiments, the number of the shock-absorbing cantilever members 20 may be at least two, or six or eight. It should be noted that the vibration absorbing cantilever members 20 must be provided in an even number to achieve symmetrical installation in pairs to achieve the vibration absorbing effect.

Optionally, in the technical solution of this embodiment, the mounting cavity a is circular to adapt to a circular tube. As another optional real-time protection device, the mounting cavity a may also be polygonal or in other shapes to adapt to pipes in other shapes.

The pipeline vibration absorber has small limitation on installation conditions, can be matched with various matched pipelines, has small dependence on the surrounding environment, and is very suitable for pipeline resonance caused by various external excitations.

The pipeline vibration absorber of the embodiment is a rigidly connected surrounding radial cantilever type dynamic vibration absorber structure, completes the vibration reduction scheme of the adjustable dynamic vibration absorber aiming at pipeline resonance, and can effectively reduce the pipeline resonance caused by external excitation or internal flow excitation vibration at a fixed frequency.

The invention also provides air conditioning units, which comprise a pipeline, wherein the pipeline absorber is arranged on the pipeline, and the pipeline absorber can effectively absorb vibration of the pipeline and reduce the use noise of the air conditioning unit.

Compared with the traditional vibration reduction mode of pasting vibration reduction auxiliary materials on the pipeline and adding an installation support, the pipeline vibration absorber can carry out targeted mechanical adjustment according to the pipeline resonance frequency points caused by the basic excitation and the pipeline pulse excitation of the external installation environment of the pipeline under the condition of not externally damaging the pipeline, is suitable for the fixed-frequency vibration reduction of the pipelines with different vibration characteristics under different differences, and realizes the lossless installation of a pipeline system in narrow and small spaces of various pipelines. The technical problems of rigid installation and fixed-frequency vibration reduction of the conventional common circular tube vibration are solved.

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 to the embodiment of the present invention 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

The pipeline vibration absorber of the kind is characterized by comprising:

the pipeline mounting piece (10) is internally provided with a mounting cavity (a) matched with a pipeline, and the pipeline mounting piece (10) is used for being mounted on the pipeline;

at least pairs of shock absorbing cantilevered members (20) symmetrically mounted on the exterior of said duct mount (10), said shock absorbing cantilevered members (20) comprising:

a boom member (21) rotatably mounted on the pipe mount (10);

and a weight member (22) attached to a tip end of the cantilever member (21).
2. The pipe vibration absorber according to claim 1, wherein the pipe vibration absorber further comprises a locking member (30), the locking member (30) being mounted between the boom part (21) and the pipe mount (10), the locking member (30) being adapted to secure the boom part (21) after the boom part (21) is rotated.
3. The pipe vibration absorber according to claim 2 wherein said locking member (30) comprises:

the sliding support frame (31), the sliding support frame (31) is rotatably installed on the pipeline installation part (10), and a sliding groove is formed in the sliding support frame (31);

and a locking member (32) movably mounted on the chute and connected to the cantilever member (21), the locking member (32) being locked to the chute after the cantilever member (21) is rotated.
4. The pipe vibration absorber of claim 2 wherein of said boom sections (21) have at least two of said locking members (30) symmetrically disposed thereon.
5. The pipe vibration absorber according to claim 1 wherein said pipe mount (10) is provided with a shaft (12) and said cantilever member (21) is rotatably mounted on said shaft (12).
6. The pipe vibration absorber of claim 1 wherein said pipe mount (10) is comprised of at least two pipe mount segments (11).
7. The pipe vibration absorber of claim 6 wherein adjacent pipe mounting segments (11) are connected by a connecting member.
8. The pipe vibration absorber of claim 1 wherein said vibration absorbing cantilever members (20) are four, and four of said vibration absorbing cantilever members (20) are mounted on said pipe mount (10) in a cross-wise symmetry.
9. The pipe vibration absorber of claim 1 wherein the mounting chamber (a) is circular or polygonal.
An air conditioning assembly of the type 10, , comprising a duct, wherein the duct has mounted thereon a duct vibration absorber of the type as claimed in any one of claims 1 to 9.