Double-layer damping dynamic vibration absorber based on condensate pump

Abstract

The utility model belongs to the technical field of dynamic vibration absorbers, and particularly relates to a double-layer damping dynamic vibration absorber based on a condensate pump, which comprises a water pump assembly and a damping vibration absorption assembly, the water pump assembly comprises a water pump body and a water pump end cover, the water pump end cover is arranged on the water pump body, and the damping vibration absorption assembly is arranged on the water pump body. The damping vibration absorption assembly is arranged on the water pump end cover, the damping vibration absorption assembly comprises a base, a damping vibration attenuation mechanism and a balance weight part, the base is detachably arranged on the water pump end cover, the damping vibration attenuation mechanism is arranged on the base, and the balance weight part is arranged on the damping vibration attenuation mechanism. Therefore, interface stress concentration caused by a traditional embedding process is avoided through the layered and stacked double-layer damping structure, local stress is effectively dispersed through coupling connection of the balance weight piece and the upper damping vibration attenuation component, broadband vibration suppression of the condensate pump is achieved, and meanwhile structural reliability and installation convenience are improved.

Description

Technical Field

[0001] This utility model relates to the technical field of dynamic vibration absorbers, and in particular to a double-layer damping dynamic vibration absorber based on a condensate pump. Background Technology

[0002] Condensate pumps are indispensable key equipment in industrial systems, and their stable operation is crucial to the entire production process. However, in actual operation, condensate pumps often face a complex vibration problem caused by water flow impact, impeller vibration, and motor start-up and shutdown. These problems not only affect the pump's working efficiency but may also damage the equipment itself and its surrounding structures.

[0003] Traditional vibration absorbers typically employ an integral embedded structure. This design often makes it difficult to perfectly match the mounting interface of the condensate pump flange end cover, resulting in installation difficulties or poor vibration reduction effect.

[0004] Single-layer damping structures cannot effectively dissipate broadband vibration energy, especially in the 20-150Hz frequency range, resulting in poor vibration reduction performance.

[0005] If an embedded design with upper and lower layer mass blocks is used, the stress concentration problem between layers may lead to insufficient life of the vibration absorber.

[0006] Chinese patent CN202628930U discloses a variable frequency condensate pump dynamic vibration absorber. Its features include a vibration absorber comprising a cantilever beam and an energy-absorbing block. The energy-absorbing block is located on one side of the free end of the cantilever beam, and the other end of the cantilever beam is fixedly connected to a connecting block. A support frame is connected to the connecting block, and the support frame is connected to the motor body or its frame. There are an even number of vibration absorbers, arranged in groups of two, with each group of two absorbers symmetrically distributed on both sides of the connecting block, facing opposite directions with their center lines aligned. The cantilever beam surface is covered with a constraint layer and a damping layer. During operation, the connecting block, cantilever beam, and energy-absorbing block work together to significantly absorb vibration energy at a specific vibration frequency, reducing the vibration amplitude and ensuring the unit operates in a safe vibration mode. However, this device only absorbs vibration energy through a single structure of the cantilever beam and energy-absorbing block, lacking a layered damping mechanism. It cannot achieve broadband vibration suppression, and the damping layer is a fixed design, making it impossible to dynamically adjust the damping characteristics according to vibration intensity or frequency. Therefore, those skilled in the art urgently need to solve these technical problems. Utility Model Content

[0007] This invention addresses the shortcomings of existing technologies, which rely solely on a single structure of cantilever beams and energy-absorbing blocks to absorb vibration energy. This lack of a layered damping mechanism prevents the suppression of broadband vibrations, and the damping layer is a fixed design that cannot dynamically adjust damping characteristics based on vibration intensity or frequency.

[0008] Therefore, the purpose of this utility model is to propose a double-layer damping dynamic vibration absorber based on a condensate pump. By using a layered stacked double-layer damping structure, the interface stress concentration caused by the traditional embedding process is avoided. The counterweight and the upper damping vibration reduction component are coupled together to effectively disperse local stress, realize broadband vibration suppression of the condensate pump, and improve structural reliability and installation convenience.

[0009] To achieve the above objectives, this utility model proposes a double-layer damped dynamic vibration absorber based on a condensate pump, comprising a pump assembly and a damping vibration absorption assembly. The pump assembly includes a pump body and a pump end cap, wherein the pump end cap is disposed on the pump body. The damping vibration absorption assembly is disposed on the pump end cap and includes a base, a damping damping mechanism, and a counterweight. The base is disposed on the pump end cap; the damping damping mechanism is disposed on the base; and the counterweight is disposed on the damping damping mechanism.

[0010] This utility model discloses a double-layer damped dynamic vibration absorber based on a condensate pump. By using a layered stacked double-layer damping structure, it avoids the interface stress concentration caused by traditional embedding processes. Through the coupling connection between the counterweight and the upper damping vibration reduction component, it effectively disperses local stress, realizes broadband vibration suppression of the condensate pump, and improves structural reliability and installation convenience.

[0011] Furthermore, the damping vibration reduction mechanism includes a lower damping vibration reduction component, an isolation component, and an upper damping vibration reduction component, wherein the lower damping vibration reduction component is disposed on the base; the isolation component is disposed on the lower damping vibration reduction component; the upper damping vibration reduction component is disposed on the isolation component, and the counterweight is disposed on the upper damping vibration reduction component.

[0012] Furthermore, the lower layer damping and vibration reduction components are either separate or integral structures. The upper and lower layer damping and vibration reduction components are arranged in a ring array or as a whole, and each group of the upper and lower layer damping and vibration reduction components is an arc-shaped integral damping elastic unit or a single damping elastic unit.

[0013] Furthermore, the pump end cover, the base, and the counterweight are respectively provided with corresponding bolt holes, and the pump end cover, the base, and the counterweight are connected by bolts that match the bolt holes.

[0014] Furthermore, the counterweight component includes a base plate, counterweight blocks, and a top plate, wherein the base plate is disposed on the upper damping and vibration reduction component; the counterweight blocks are in multiple sets, and the multiple sets of counterweight blocks are stacked on the base plate respectively; the top plate is disposed on the counterweight blocks.

[0015] Furthermore, the base plate and the upper damping and vibration reduction component are dynamically coupled together.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1. This utility model utilizes a layered stacked double-layer damping structure. The lower layer damping and vibration reduction components work synergistically with the upper layer damping and vibration reduction components. The lower layer absorbs low-frequency vibration energy, while the upper layer suppresses high-frequency resonance. Combined with the isolation component to coordinate the phase difference, it effectively covers a wide frequency band of vibration suppression, thus solving the technical defect of traditional single-layer damping structures that cannot dissipate wide frequency vibration energy.

[0018] 2. This utility model uses a dynamic coupling connection design between the counterweight and the upper damping and vibration reduction components. For example, the base plate adopts a corrugated or radial groove structure, combined with a modular installation method with bolt holes, to disperse local stress and adapt to different condensate pump flange end cover interfaces. This avoids the installation difficulties and insufficient structural life caused by interface stress concentration in traditional embedded vibration absorbers.

[0019] 3. This utility model achieves rapid assembly and maintenance through a detachable bolt connection structure of the base, damping and vibration reduction mechanism and counterweight. At the same time, it utilizes a split-type damping elastic unit ring array layout to further enhance the adaptability of the vibration absorber to the direction of composite vibration, and significantly improve the operational stability and structural reliability of the condensate pump. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the installation of this utility model;

[0023] Figure 3 This is an exploded view of the damping vibration absorption component structure of this utility model.

[0024] As shown in the figure: 10. Water pump assembly; 101. Water pump body; 102. Water pump end cover; 20. Damping vibration absorption assembly; 201. Base; 202. Damping vibration reduction mechanism; 2021. Lower damping vibration reduction component; 2022. Isolation component; 2023. Upper damping vibration reduction component; 203. Counterweight; 2031. Base plate; 2032. Counterweight block; 2033. Top plate. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0026] The following describes an embodiment of the present invention, a double-layer damped dynamic vibration absorber based on a condensate pump, with reference to the accompanying drawings.

[0027] like Figure 2-3 As shown, the dual-layer damped dynamic vibration absorber based on the condensate pump in this embodiment of the present invention includes a pump assembly 10 and a damping vibration absorption assembly 20.

[0028] The water pump assembly 10 includes a water pump body 101 and a water pump end cover 102.

[0029] The pump end cover 102 is mounted on the pump body 101, and the damping and vibration absorption assembly 20 is mounted on the pump end cover 102.

[0030] The damping vibration absorption assembly 20 includes a base 201, a damping vibration reduction mechanism 202, and a counterweight 203.

[0031] The base 201 is detachably mounted on the pump end cover 102, the damping and vibration reduction mechanism 202 is mounted on the base 201, and the counterweight 203 is mounted on the damping and vibration reduction mechanism 202.

[0032] It should be noted that the damping vibration absorption component 20 described in this embodiment is connected to the water pump end cover 102 via the base 201, and the base 201 and the water pump end cover 102 are made of the same material. The damping vibration reduction mechanism 202 effectively suppresses the wide-frequency vibration of the condensate pump and is suitable for its humid and high-load operating conditions. The counterweight 203 works in conjunction with the damping vibration reduction mechanism 202 to solve the problem of interlayer stress concentration.

[0033] In one embodiment of this utility model, such as Figure 3 As shown, the damping and vibration reduction mechanism 202 includes a lower damping and vibration reduction component 2021, an isolation component 2022, and an upper damping and vibration reduction component 2023.

[0034] The lower damping vibration reduction component 2021 is mounted on the base 201, the isolation component 2022 is mounted on the lower damping vibration reduction component 2021, the upper damping vibration reduction component 2023 is mounted on the isolation component 2022, and the counterweight 203 is mounted on the upper damping vibration reduction component 2023.

[0035] It should be noted that the lower damping vibration reduction component 2021 is made of either hydrogenated nitrile rubber or fluororubber.

[0036] Furthermore, the lower damping and vibration reduction component 2021 can also use materials such as metal spring pads, TPE, rubber, and metal-rubber to achieve elastic deformation within a certain deformation range. The specific materials used are limited according to the location and environment in which the water pump body 101 is used.

[0037] The isolation component 2022 is a metal partition or a composite material layer.

[0038] The materials of the upper damping vibration reduction component 2023 and the lower damping vibration reduction component 2021 are set according to the processing requirements of the water pump body 101.

[0039] In one embodiment of this utility model, such as Figure 3 As shown, there are four groups of lower damping vibration reduction components 2021, arranged in a circular array, and each group of lower damping vibration reduction components 2021 is an arc-shaped damping vibration reduction unit.

[0040] It should be noted that the lower damping vibration damping component 2021 and the upper damping vibration damping component 2023 are aligned vertically during installation. The layered, stacked double-layer damping structure avoids the interface stress concentration caused by traditional embedding processes. The lower damping vibration damping component 2021 absorbs low-frequency vibrations, while the upper damping vibration damping component 2023 suppresses high-frequency resonance. The isolation component 2022 coordinates the phase difference between the lower and upper damping vibration damping components 2021 and 2023. The isolation component 2022 can be configured as a single layer or multiple layers, with the specific number determined according to the condensate pump model.

[0041] Furthermore, the lower damping vibration reduction component 2021 and the upper damping vibration reduction component 2023 can be an integrated structure or a split structure. The split structure is set as an arc-shaped damping unit or a rectangle or square, etc. The specific shape is set according to the actual installation requirements, and the number of splits is set according to the size of the water pump body 101 and the water pump end cover 102.

[0042] In one embodiment of this utility model, such as Figure 3 As shown, the pump end cover 102, the base 201 and the counterweight 203 are respectively provided with corresponding bolt holes, and the pump end cover 102, the base 201 and the counterweight 203 are connected by bolts that match the bolt holes.

[0043] It should be noted that corresponding bolt holes are provided on the pump end cover 102, the base 201, and the counterweight 203, respectively. The pump end cover 102, the base 201, and the counterweight 203 are connected and fixed by bolts that match the bolt holes. The number of bolt holes is set according to the model of the pump assembly 10 and the design requirements to ensure good stability of the overall installation.

[0044] In one embodiment of this utility model, such as Figure 3 As shown, the counterweight 203 includes a base plate 2031, a counterweight block 2032, and a top plate 2033.

[0045] The base plate 2031 is mounted on the upper damping and vibration reduction component 2023, the counterweight 2032 consists of multiple sets, and the multiple sets of counterweight 2032 are stacked on the base plate 2031 respectively, and the top plate 2033 is mounted on the counterweight 2032.

[0046] It should be noted that the outer diameter and area of ​​the base plate 2031 are larger than the area of ​​the base plate 2031. Therefore, the base plate 2031 is pressed onto the upper damping and vibration reduction component 2023, effectively ensuring the stability of the upper damping and vibration reduction component 2023. The number of counterweights 2032 is set according to the condensate pump model. The top plate 2033 is pressed onto the counterweights 2032 and connected to the external structure through the top plate 2033, resulting in good overall tightness.

[0047] In one embodiment of this utility model, such as Figure 3 As shown, the lower surface of the base plate 2031 is a non-planar end face, and the base plate 2031 and the upper damping and vibration reduction component 2023 are dynamically coupled.

[0048] It should be noted that the lower surface of the base plate 2031 adopts a non-planar end face or a planar end face. If the non-planar end face adopts one of the following structures: corrugated, grid, or radial groove, the base plate 2031 and the upper damping and vibration reduction component 2023 are dynamically coupled to disperse local stress.

[0049] Specifically, the installation and practical application steps of the double-layer damping dynamic vibration absorber for the condensate pump are as follows: Based on the pump end cover 102 on the pump body 101, the base 201 is connected to the pump end cover 102 via bolts. Then, the lower damping vibration damping component 2021, the isolation component 2022, and the upper damping vibration damping component 2023 are sequentially installed on the base 201. The lower damping vibration damping component 2021 absorbs low-frequency vibrations, the upper damping vibration damping component 2023 suppresses high-frequency resonance, and the isolation component 2022 coordinates the phase difference between the lower damping vibration damping component 2021 and the upper damping vibration damping component 2023. The lower surface of the base plate 2031 is coupled to the upper damping vibration damping component 2023, effectively dispersing local stress.

[0050] In summary, the dual-layer damping dynamic vibration absorber based on the condensate pump of this utility model avoids the interface stress concentration caused by the traditional embedding process through the layered stacked dual-layer damping structure, and effectively disperses local stress through the coupling connection of the counterweight and the upper damping vibration reduction component, thereby achieving broadband vibration suppression of the condensate pump, while improving structural reliability and installation convenience.

[0051] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A double-layer damped dynamic vibration absorber based on a condensate pump, characterized in that, Includes a water pump assembly (10) and a damping vibration absorption assembly (20), wherein, The water pump assembly (10) includes a water pump body (101) and a water pump end cover (102), wherein, The pump end cap (102) is installed on the pump body (101); The damping vibration absorption assembly (20) is installed on the water pump end cover (102). The damping vibration absorption assembly (20) includes a base (201), a damping vibration reduction mechanism (202), and a counterweight (203). The base (201) is detachably mounted on the water pump end cover (102); The damping and vibration reduction mechanism (202) is mounted on the base (201); The counterweight (203) is mounted on the damping and vibration reduction mechanism (202).

2. The double-layer damped dynamic vibration absorber based on a condensate pump according to claim 1, characterized in that, The damping and vibration reduction mechanism (202) includes a lower damping and vibration reduction component (2021), an isolation component (2022), and an upper damping and vibration reduction component (2023), wherein, The lower damping and vibration reduction component (2021) is mounted on the base (201); The isolation component (2022) is disposed on the lower damping and vibration reduction component (2021); The upper damping vibration reduction component (2023) is disposed on the isolation component (2022), and the counterweight (203) is disposed on the upper damping vibration reduction component (2023).

3. The double-layer damped dynamic vibration absorber based on a condensate pump according to claim 2, characterized in that, The lower damping vibration reduction component (2021) consists of four groups, which are arranged in a ring array or as a whole. Each group of the lower damping vibration reduction component (2021) is an arc-shaped integral damping elastic unit or a single damping elastic unit.

4. The double-layer damped dynamic vibration absorber based on a condensate pump according to claim 1, characterized in that, The pump end cap (102), the base (201) and the counterweight (203) are respectively provided with corresponding bolt holes, and the pump end cap (102), the base (201) and the counterweight (203) are connected by bolts that match the bolt holes.

5. The double-layer damped dynamic vibration absorber based on a condensate pump according to claim 2, characterized in that, The counterweight (203) includes a base plate (2031), a counterweight block (2032), and a top plate (2033), wherein, The base plate (2031) is mounted on the upper damping and vibration reduction component (2023); The counterweight (2032) is in multiple sets, and the multiple sets of counterweight (2032) are stacked on the base plate (2031); The top plate (2033) is mounted on the counterweight (2032).

6. The double-layer damped dynamic vibration absorber based on a condensate pump according to claim 5, characterized in that, The base plate (2031) and the upper damping and vibration reduction component (2023) are dynamically coupled together.

Images