Pipe vibration absorber and air conditioning unit

Abstract

The present application provides a pipe vibration absorber and an air-conditioning unit. An embodiment of the pipe vibration absorber includes a pipe mounting part and at least one pair of vibration-absorbing cantilever components. A mounting cavity adapted to the pipe is formed in the pipe mounting part, and at least one pair of vibration-absorbing cantilever components are symmetrically mounted on the outside of the pipe mounting part. The vibration-absorbing cantilever component includes a cantilever component and a counterweight component. The cantilever component is rotatably mounted on the pipe mounting part, and the counterweight component is mounted at the end of the cantilever component. The technical solution of the present invention achieves fixed-frequency vibration reduction of the pipe within a narrow frequency band through a certain cantilever extension length, increases the universality of the pipe vibration absorber, and achieves effective reduction of pipe resonance caused by different external excitations or internal flow-induced vibrations, and ultimately achieves the effect of fixed-frequency vibration reduction of the pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of pipelines, and in particular to a pipeline vibration absorber and an air conditioning unit. Background Art

[0002] In the refrigerant system of an air-conditioning unit, for example, pipes are used to transport the refrigerant. Since the pressure of the refrigerant in the pipes changes constantly, the pipes will vibrate, causing noise and pipe damage.

[0003] When using the existing pipeline damping components, the pipeline damping components that match the pipeline vibration frequency can only be selected according to the pipeline vibration frequency. Different pipelines have different vibration frequencies. It is very troublesome to always purchase different pipeline damping components according to the pipeline vibration frequency, which makes the pipeline damping components inconvenient to use. Summary of the invention

[0004] The embodiments of the present invention provide a pipeline vibration absorber and an air conditioning unit to solve the technical problem of poor versatility of pipeline vibration-absorbing elements in the prior art.

[0005] An embodiment of the present application provides a pipe vibration absorber, comprising: a pipe mounting piece, in which a mounting cavity adapted to the pipe is formed, and the pipe mounting piece is used to be mounted on the pipe; at least one pair of vibration absorbing cantilever components, symmetrically mounted on the outside of the pipe mounting piece, and the vibration absorbing cantilever components include: a cantilever component, rotatably mounted on the pipe mounting piece; and a counterweight component, mounted at the end of the cantilever component.

[0006] In one embodiment, the pipeline vibration absorber further comprises a locking member, which is installed between the cantilever component and the pipeline mounting piece, and is used to fix the cantilever component after the cantilever component rotates.

[0007] In one embodiment, the locking component includes: a sliding support frame, which is rotatably mounted on the pipe mounting member and has a slide groove; a locking component, which is movably mounted on the slide groove and connected to the cantilever component, and the locking component is locked on the slide groove after the cantilever component rotates.

[0008] In one embodiment, at least two locking members are symmetrically arranged on one cantilever component.

[0009] In one embodiment, a rotating shaft is provided on the pipeline mounting member, and the cantilever component is rotatably mounted on the rotating shaft.

[0010] In one embodiment, the pipe mounting member is composed of at least two pipe mounting blocks.

[0011] In one embodiment, two adjacent pipeline installation blocks are connected via a connecting piece.

[0012] In one embodiment, there are four vibration absorbing cantilever components, and the four vibration absorbing cantilever components are installed on the pipe mounting member in a cross-symmetrical manner.

[0013] In one embodiment, the mounting cavity is circular or polygonal.

[0014] The present application also provides an air conditioning unit, comprising a pipeline, on which the above-mentioned pipeline vibration absorber is installed.

[0015] In the above embodiment, the pipe mounting part is installed on the pipe through the mounting cavity a, and the cantilever part rotates on the pipe mounting part, so that the vibration absorption frequency of the counterweight part and the cantilever part relative to the pipe mounting part can be adjusted, so as to be suitable for the vibration frequency of the pipe. The basic principle of the pipe vibration absorber is that when the structure vibrates, the pipe vibration absorber is driven to vibrate together, and the inertial force generated by the movement of the pipe vibration absorber reacts to the structure, thereby effectively suppressing the vibration of the main structure. The technical solution of the present invention achieves fixed-frequency vibration reduction of the pipe within a narrow frequency band through a certain cantilever extension length, increases the universality of the pipe vibration absorber, and effectively reduces the resonance of the pipe caused by different external excitations or internal flow-induced vibrations, and finally achieves the effect of fixed-frequency vibration reduction of the pipe. The pipe vibration absorber of the present invention has small restrictions on the installation conditions, can be matched with various matching pipes, has little dependence on the surrounding environment, and is very suitable for pipe resonance caused by various external excitations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 is a schematic diagram of the overall structure of an embodiment of a pipeline vibration absorber according to the present invention;

[0018] Figure 2 yes Figure 1 Schematic diagram of the exploded structure of the pipeline vibration absorber;

[0019] Figure 3 yes Figure 1 A schematic diagram of the structure of the pipeline vibration absorber without the counterweight component;

[0020] Figure 4 yes Figure 3 A schematic diagram of the structure of the pipeline vibration absorber with the vibration absorbing cantilever member retracted;

[0021] Figure 5 yes Figure 3 Schematic diagram of the structure of the pipe mounting parts of the pipe vibration absorber. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments and the accompanying drawings. Here, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0023] In order to solve the technical problem of poor versatility of pipeline shock-absorbing elements in the prior art, the technical solution of the present invention takes into account the reality that the resonance frequency of pipelines varies greatly due to different lengths of actual pipelines, installation environments and external excitations. For this purpose, a mechanical adjustability design is carried out, and the fixed frequency of the device of the present invention can be adjusted accordingly according to the actual resonance frequency, so as to achieve the actual needs of a single invention device being suitable for different pipeline vibration characteristics. The present invention provides a pipeline vibration absorber, which adopts an adjustable power pipeline vibration absorber design scheme to achieve vibration reduction of the pipeline at a key vibration frequency point, and integrates the pipeline vibration absorber into a rigidly connected radial cantilever power vibration absorber structure according to the principles of mechanically adjustable action frequency range, detachable structure, and applicability to circular pipelines. The use of a pipeline vibration absorber can meet most conditions of dense pipeline layout, enhance the universality of the pipeline vibration absorber, perform non-destructive supplementary installation on pipelines with abnormal vibration, and achieve targeted fixed-frequency vibration reduction effects.

[0024] Specifically, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an embodiment of the pipeline vibration absorber of the present invention comprises a pipeline mounting member 10 and at least one pair of vibration absorbing cantilever members 20, wherein a mounting cavity a adapted to the pipeline is formed in the pipeline mounting member 10, and at least one pair of vibration absorbing cantilever members 20 are symmetrically mounted on the outside of the pipeline mounting member 10. The vibration absorbing cantilever members 20 comprise a cantilever component 21 and a weight component 22, wherein the cantilever component 21 is rotatably mounted on the pipeline mounting member 10, and the weight component 22 is mounted at the end of the cantilever component 21.

[0025] By applying the technical solution of the present invention, the pipe mounting part 10 is installed on the pipe through the mounting cavity a, and the cantilever part 21 rotates on the pipe mounting part 10, so that the vibration absorption frequency of the counterweight part 22 and the cantilever part 21 relative to the pipe mounting part 10 can be adjusted, so as to be suitable for the vibration frequency of the pipe. The basic principle of the pipe vibration absorber is that when the structure vibrates, the pipe vibration absorber is driven to vibrate together, and the inertial force generated by the movement of the pipe vibration absorber reacts to the structure, thereby effectively suppressing the vibration of the main structure. The technical solution of the present invention achieves fixed-frequency vibration reduction of the pipe within a narrow frequency band through a certain cantilever extension length, increases the universality of the pipe vibration absorber, and effectively reduces the pipe resonance caused by different external excitations or internal flow-induced vibrations, and finally achieves the effect of fixed-frequency vibration reduction of the pipe. The pipe vibration absorber of the present invention has small restrictions on installation conditions, can be matched with various matching pipes, has little dependence on the surrounding environment, and is very suitable for pipe resonance caused by various external excitations.

[0026] Specifically, the pipe mounting part 10 is tightly fitted and fixed to the target pipe as a key supporting structure, the cantilever part 21 is the main elastic element, which plays a role in vibration transmission, and the counterweight part 22 is the vibration energy bearing structure. When the target pipe vibrates, the pipe mounting part 10 vibrates together, and is transmitted to the counterweight part 22 through the cantilever part 21. Conversely, the inertial force generated by the movement of the counterweight part 22 reacts on the structure, thereby effectively suppressing the vibration of the main structure. The rotation angle of the cantilever part 21 determines the overall stiffness of the device, and the fixed frequency of different pipes can be adjusted at different angles.

[0027] Optional, the pipeline vibration absorber adopts an adjustable all-metal structure design. It can be used efficiently in various harsh environments such as high humidity, high salt fog, high dust, etc., and achieves high reliability vibration reduction requirements.

[0028] Optionally, the counterweight component 22 is mounted on the cantilever component 21 by subsequent bolts or welding.

[0029] like Figure 2 , Figure 3 and Figure 4As shown, in the technical solution of this embodiment, the pipeline vibration absorber also includes a locking member 30, and the locking member 30 is installed between the cantilever component 21 and the pipeline mounting part 10. When the cantilever component 21 rotates to adjust the vibration absorption frequency of the vibration absorbing cantilever component 20, the locking member 30 fixes the cantilever component 21. Optionally, in the technical solution of this embodiment, the locking member 30 includes a sliding support frame 31 and a locking member 32, the sliding support frame 31 is rotatably mounted on the pipeline mounting part 10, a sliding groove is provided on the sliding support frame 31, and the locking member 32 is movably mounted on the sliding groove and connected to the cantilever component 21, and the locking member 32 is locked on the sliding groove after the cantilever component 21 rotates. In the technical solution of this embodiment, the sliding support frame 31 also constitutes a part of the cantilever component 21 for transmitting vibration. Optionally, the locking member 32 is a threaded knob that cooperates with the sliding groove on the sliding support frame 31 and the upper and lower reserved holes of the cantilever component 21 to achieve fastening installation. As another optional embodiment, the locking member 30 may also be a component that only plays a fixing role.

[0030] Optionally, the cantilever member 21 can swing relative to the pipeline mounting member 10 in the range of 0 to 120 degrees, and the final swing position is determined by the target pipeline resonant main frequency and the fixed frequency adjustment of the present invention. Figure 4 As shown, when the cantilever component 21 and the pipe mounting component 10 are in a fit state, the fixed frequency value is relatively high; when it extends outward and rotates, the fixed frequency value gradually decreases, and reaches the best vibration reduction frequency point at a certain position, and is fastened and installed by the locking member 30, and finally achieves fixed frequency vibration reduction of a certain pipeline.

[0031] Preferably, the cantilever component 21 is arc-shaped and can fit tightly with the outer surface of the pipe mounting component 10 .

[0032] like Figure 2 As shown, at least two locking members 30 are symmetrically arranged on one cantilever component 21 to enhance the locking effect of the cantilever component 21 .

[0033] Optional, such as Figure 2 and Figure 5 As shown, a rotating shaft 12 is provided on the pipe mounting member 10, and the cantilever component 21 is rotatably mounted on the rotating shaft 12. The cantilever component 21 is mounted by the rotating shaft 12, so that the cantilever component 21 can rotate more stably.

[0034] like Figure 5As shown, in the technical solution of this embodiment, the pipe mounting part 10 is composed of four pipe mounting blocks 11. Optionally, two adjacent pipe mounting blocks 11 are connected by a connector. As a key supporting structure, the pipe mounting part 10 does not need to be welded or disassembled for the target pipeline. The pipe mounting blocks 11 are directly arranged and installed in a joint manner. They are connected to each other through square bosses and concave fixing grooves. A single part is responsible for the 90° area of ​​the pipeline, and is finally fastened and installed by hexagon socket bolts. As other optional implementations, the pipe mounting part 10 can also be composed of at least two pipe mounting blocks 11. More preferably, groove patterns are formed on the inner wall of the pipe mounting part 10 to increase the contact friction with the pipeline and realize a rigid connection. In addition, a mounting hole is provided on the top of the pipe mounting block 11 for the installation of the sliding support frame 31 and the locking component 32. During the disassembly process, it is only necessary to carry out portable disassembly and assembly of the hexagon socket screws of the pipe mounting block 11.

[0035] like Figure 3 As shown, in the technical solution of this embodiment, there are four vibration absorbing cantilever members 20, and the four vibration absorbing cantilever members 20 are cross-symmetrically installed on the pipe mounting member 10. As other optional implementations, there may be at least two, six, or eight vibration absorbing cantilever members 20. It should be noted that the vibration absorbing cantilever members 20 must be an even number to achieve symmetrical installation in pairs, so as to achieve the vibration absorbing effect.

[0036] Optionally, in the technical solution of this embodiment, the installation cavity a is circular to adapt to a round pipe. As other optional real-time protection four, the installation cavity a can also be polygonal or other shapes to adapt to pipes of other shapes.

[0037] The pipeline vibration absorber of the present invention has little restriction on installation conditions, can be matched with various types of matching pipelines, has little dependence on the surrounding environment, and is very suitable for pipeline resonance caused by various external excitations.

[0038] The pipeline vibration absorber of this embodiment is a rigidly connected four-sided radial cantilever dynamic vibration absorber structure, which completes the vibration reduction scheme of the adjustable dynamic vibration absorber for pipeline resonance and can effectively reduce the pipeline resonance caused by external excitation or internal flow-induced vibration at a fixed frequency.

[0039] The present invention also provides an air-conditioning unit, which includes a pipeline, on which the above-mentioned pipeline vibration absorber is installed. The above-mentioned pipeline vibration absorber can effectively absorb vibration of the pipeline and reduce the operating noise of the air-conditioning unit.

[0040] Compared with the traditional vibration reduction method of applying vibration reduction auxiliary materials to pipelines and adding mounting brackets, the pipeline vibration absorber of the present invention can perform targeted mechanical adjustment according to the basic excitation of the external installation environment of the pipeline and the pipeline resonance frequency caused by the pipeline pulsation excitation without externally damaging the pipeline. It is suitable for fixed-frequency vibration reduction of pipelines with different vibration characteristics, and realizes the non-destructive installation of pipeline systems in narrow spaces of various pipelines. It solves the technical problems of rigid installation and fixed-frequency vibration reduction of the currently common circular pipe vibration.

[0041] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the embodiments of the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pipeline vibration absorber, characterized in that: include: A pipeline installation member (10), wherein a mounting cavity (a) adapted to the pipeline is formed in the pipeline installation member (10), and the pipeline installation member (10) is used to be installed on the pipeline; At least one pair of vibration absorbing cantilever components (20) are symmetrically mounted outside the pipeline mounting member (10), and the vibration absorbing cantilever components (20) include: A cantilever component (21) rotatably mounted on the pipeline mounting component (10); A counterweight component (22) is mounted on the end of the cantilever component (21); a rotating shaft (12) is provided on the pipe mounting member (10); and the cantilever component (21) is rotatably mounted on the rotating shaft (12); a locking member (30), the locking member (30) being installed between the cantilever member (21) and the pipe mounting member (10), the locking member (30) being used to fix the cantilever member (21) after the cantilever member (21) rotates; The locking member (30) comprises: A sliding support frame (31), the sliding support frame (31) is rotatably mounted on the pipeline mounting member (10), and a sliding groove is provided on the sliding support frame (31); A locking component (32) is movably mounted on the slide slot and connected to the cantilever component (21); the locking component (32) is locked on the slide slot after the cantilever component (21) rotates.

2. The pipeline vibration absorber according to claim 1, characterized in that: At least two locking components (30) are symmetrically arranged on one cantilever component (21).

3. The pipeline vibration absorber according to claim 1, characterized in that: The pipeline installation component (10) is composed of at least two pipeline installation blocks (11).

4. The pipeline vibration absorber according to claim 3, characterized in that: Two adjacent pipeline installation blocks (11) are connected via a connecting piece.

5. The pipeline vibration absorber according to claim 1, characterized in that: There are four vibration absorbing cantilever components (20), and the four vibration absorbing cantilever components (20) are mounted on the pipe mounting member (10) in a cross-symmetrical manner.

6. The pipeline vibration absorber according to claim 1, characterized in that: The installation cavity (a) is circular or polygonal.

7. An air conditioning unit, comprising a pipeline, characterized in that: The pipeline vibration absorber according to any one of claims 1 to 6 is installed on the pipeline.

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