Vibration and noise reduction device of pipeline pump

Abstract

The utility model discloses a vibration and noise reduction device of a pipeline pump, and relates to the field of pipeline pumps. The first vibration reduction damping structure and the second vibration reduction damping structure are detachably connected to an inlet and an outlet of the pipeline pump through connecting assemblies correspondingly. A plurality of axial cavities are formed in the end faces, close to the connecting end of the pipeline pump, of the first vibration reduction damping structure and the second vibration reduction damping structure in the circumferential direction, and the axis of each axial cavity is parallel to the axial direction of the pipeline pump. A plurality of radial cavities are formed in the circumferences of the cylindrical outer walls of the first vibration reduction damping structure and the second vibration reduction damping structure in the circumferential direction, and the axis of each radial cavity is perpendicular to the axial direction of the pipeline pump. The plurality of filling damping particles are respectively filled in the corresponding axial cavities and the radial cavities; and the plurality of cavity adjusting pieces are respectively mounted at the opening ends of the corresponding axial cavities and the radial cavities in an adjustable and sealed manner. According to the invention, the pump body or the foundation does not need to be changed, and vibration and noise reduction with higher efficiency can be realized.

Description

Technical Field

[0001] This application relates to the field of pipeline pump technology, and in particular to a vibration reduction and noise reduction device for pipeline pumps. Background Technology

[0002] As a key fluid transport device in industrial and civil fields, pipeline pumps have long faced the challenge of generating vibration and noise during operation. This vibration primarily stems from impeller mechanical imbalance, the interaction between the fluid and flow components, and inlet / outlet fluid pulsation, manifesting mainly as coupled axial and radial vibration.

[0003] Existing technologies, such as adding vibration isolators to the pump base or attaching damping materials to the casing, have significant limitations: while vibration isolators can partially isolate vibration transmission, their effect on suppressing vibrations of the pump body itself is limited; and damping materials are insufficient in dissipating the most harmful low-to-medium frequency vibrations, and their performance is easily affected by temperature. More fundamentally, both of these methods are "post-hoc remedies," failing to intercept vibration energy at its source, resulting in low energy dissipation efficiency. Furthermore, they typically require additional installation structures, which increases system complexity and modification costs. Utility Model Content

[0004] This application provides a vibration reduction and noise reduction device for a pipeline pump, which solves the problems mentioned in the background art.

[0005] This application provides a vibration reduction and noise reduction device for a pipeline pump, including a first vibration damping structure, a second vibration damping structure, multiple damping particles, and multiple cavity adjustment components. The first and second vibration damping structures are detachably connected to the inlet and outlet of the pipeline pump via connecting components. Both the first and second vibration damping structures have internal fluid channels connecting the pipeline pump to an external pipeline. On the end faces of the first and second vibration damping structures near the connection end of the pipeline pump, multiple axial cavities are circumferentially formed, with the axis of each axial cavity parallel to the axial direction of the pipeline pump. On the circumference of their cylindrical outer walls, multiple radial cavities are circumferentially formed, with the axis of each radial cavity perpendicular to the axial direction of the pipeline pump. Multiple damping particles are respectively filled into the axial and radial cavities. Multiple cavity adjustment components are installed in an adjustable and sealed manner at the opening ends of the corresponding axial and radial cavities.

[0006] In one possible implementation, the material of the filling damping particles is one of steel balls, tungsten alloy particles, or copper particles.

[0007] In one possible implementation, the cavity adjusting element is a screw, and the opening ends of both the axial cavity and the radial cavity are provided with threads that mate with the screw.

[0008] In one possible implementation, the first vibration damping structure, the second vibration damping structure, and the corresponding axial cavity and radial cavity are integrally formed.

[0009] In one possible implementation, the fluid channel of the first vibration damping structure is a tapered structure.

[0010] One or more technical solutions provided in the embodiments of this application have at least the following technical effects:

[0011] The vibration reduction and noise reduction device for pipeline pumps provided in this application includes a first vibration damping structure, a second vibration damping structure, multiple damping particles, and multiple cavity adjustment components. This application places the first and second vibration damping structures directly on the critical path of vibration transmission, allowing vibration energy to be transmitted to these structures almost immediately after generation and efficiently absorbed by the damping particles. Compared to external dampers that require multiple structural transmissions, the vibration energy in this application is efficiently intercepted and dissipated at the source, significantly improving efficiency. When the axial and radial vibrations generated by the pipeline pump are transmitted to this device, they respectively excite the damping particles in the axial and radial cavities to generate intense collisions, friction, and turbulence, thereby efficiently converting harmful mechanical energy into internal energy. By independently adjusting the screw-in depth of each cavity adjustment component, the effective volume and particle turbulence intensity of the corresponding axial and radial cavities can be precisely controlled, much like operating an "equalizer," achieving precise and adjustable directional suppression of axial and radial vibrations, providing unprecedented flexibility for solving complex multi-directional coupled vibration problems. Therefore, this application not only overcomes the shortcomings of traditional external vibration isolators having limited effectiveness and damping materials being insensitive to low and medium frequency vibrations, but also, with its unique design as part of the pipeline body, eliminates all additional installation structures and can achieve higher efficiency vibration reduction and noise reduction without any modifications to the pump body or foundation. It also has outstanding advantages such as simple structure, low modification cost and strong adaptability. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 A schematic diagram of the structure of the vibration reduction and noise reduction device for the pipeline pump provided in the embodiment of this application;

[0014] Figure 2 Schematic diagram of the first vibration damping structure provided in the embodiments of this application Figure 1 ;

[0015] Figure 3 Schematic diagram of the first vibration damping structure provided in the embodiments of this application Figure 2 ;

[0016] Figure 4 Schematic diagram of the second vibration damping structure provided in the embodiments of this application Figure 1 ;

[0017] Figure 5 Schematic diagram of the second vibration damping structure provided in the embodiments of this application Figure 2 .

[0018] Icons: 1-First vibration damping structure; 2-Second vibration damping structure; 3-Fluid channel; 4-Pipeline pump; 5-Axial cavity; 6-Radial cavity; 7-Cavity adjustment component. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0021] This application provides a vibration reduction and noise reduction device for a pipeline pump, such as... Figures 1 to 5As shown. The vibration reduction and noise reduction device for the pipeline pump includes a first vibration damping structure 1, a second vibration damping structure 2, multiple filled damping particles, and multiple cavity adjustment components 7. The first vibration damping structure 1 and the second vibration damping structure 2 are detachably connected to the inlet and outlet of the pipeline pump 4 via connecting components, respectively. Both the first vibration damping structure 1 and the second vibration damping structure 2 have internal fluid channels 3 that connect the pipeline pump 4 to the external pipeline. Figure 3 and Figure 5 As shown, the first vibration damping structure 1 and the second vibration damping structure 2 have multiple axial cavities 5 circumferentially formed on the end face near the connection end of the pipeline pump 4, and the axis of each axial cavity 5 is parallel to the axis of the pipeline pump 4. Figure 2 and Figure 4 As shown, the first vibration damping structure 1 and the second vibration damping structure 2 have multiple radial cavities 6 circumferentially formed on their cylindrical outer circumferences, with the axis of each radial cavity 6 perpendicular to the axial direction of the pipeline pump 4. Multiple damping particles are respectively filled into the axial cavity 5 and the radial cavity 6. Multiple cavity adjusting components 7 are installed in an adjustable and sealed manner at the opening ends of the corresponding axial cavity 5 and radial cavity 6.

[0022] Specifically, the first vibration damping structure 1 and the second vibration damping structure 2 of this application are directly integrated into the pipeline system. The first vibration damping structure 1 and the second vibration damping structure 2 are connected by the flanges and bolts inherent in the pipeline system, thereby eliminating all additional installation steps.

[0023] It should be noted that this application places the first vibration damping structure 1 and the second vibration damping structure 2 directly on the critical path of vibration transmission, so that the vibration energy is transmitted to the structure almost without attenuation after it is generated, and is efficiently absorbed by the filling damping particles. Compared with external dampers that need to be transmitted through multiple structures, the vibration energy of this application is efficiently intercepted and dissipated at the source, thereby significantly improving efficiency. When the axial and radial vibrations generated by the operation of the pipeline pump 4 are transmitted to the device, they respectively excite the filling damping particles in the axial cavity 5 and the radial cavity 6 to generate violent collisions, friction and turbulence, thereby efficiently converting harmful mechanical energy into internal energy. By independently adjusting the screw-in depth of each cavity adjustment component 7, the effective volume and particle turbulence intensity of the corresponding axial cavity 5 and radial cavity 6 can be precisely controlled, just like operating an "equalizer", to achieve precise and adjustable directional suppression of axial and radial vibrations, providing unprecedented flexibility for solving complex multi-directional coupled vibration problems. Therefore, this application not only overcomes the shortcomings of traditional external vibration isolators having limited effectiveness and damping materials being insensitive to low and medium frequency vibrations, but also, with its unique design as part of the pipeline body, eliminates all additional installation structures and can achieve higher efficiency vibration reduction and noise reduction without any modifications to the pump body or foundation. It also has outstanding advantages such as simple structure, low modification cost and strong adaptability.

[0024] In this embodiment, the material of the damping particles is one of steel balls, tungsten alloy particles, or copper particles.

[0025] In one embodiment of this application, the damping particles are preferably tungsten alloy particles with a particle size of 0.3 mm, and the filling rate is controlled at about 85% of the theoretical volume of the cavity. The tungsten alloy particles of this application have a larger mass per unit volume, which can generate stronger momentum exchange and impact energy under vibration excitation, thereby improving the energy dissipation efficiency of a single collision.

[0026] Furthermore, the damping particles used in this application can also be metal particles such as steel balls or copper particles.

[0027] This application boasts excellent maintainability and adaptability to various operating conditions. Its modular design allows users to easily replace the damping particles due to wear or experimental needs by simply unscrewing the screws.

[0028] In this embodiment, the cavity adjusting member 7 is a screw, and the opening ends of both the axial cavity 5 and the radial cavity 6 are provided with threads that mate with the screw.

[0029] Specifically, each axial cavity 5 and radial cavity 6 is equipped with an M5-sized countersunk head screw at its opening end to achieve sealing and adjustment functions; to ensure the sealing reliability of the device under long-term vibration environment, high-strength thread sealant is pre-applied to the threaded part of the screw.

[0030] In this embodiment, the first vibration damping structure 1, the second vibration damping structure 2, and the corresponding axial cavity 5 and radial cavity 6 are integrally formed.

[0031] In this embodiment of the application, the fluid channel 3 of the first vibration damping structure 1 is a tapered structure.

[0032] It should be noted that the tapered structure of this application can effectively guide and smooth the fluid flow, reduce hydraulic losses such as eddies and flow separation when the fluid passes through the first damping structure 1, thereby improving the inlet flow state.

[0033] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0034] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A vibration and noise reduction device for a ducted pump, characterized in that, The first damping structure (1), the second damping structure (2), a plurality of damping particles and a plurality of cavity adjusting members (7) are included. The first damping structure (1) and the second damping structure (2) are respectively detachably connected to the inlet and outlet of the pipeline pump (4) through a connecting assembly; the first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; 2. The vibration and noise reducing apparatus of a pipe pump according to claim 1, wherein The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; 3. The vibration and noise reducing apparatus of a pipe pump according to claim 1, wherein The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; 4. The vibration and noise reducing apparatus of a pipe pump according to claim 1, wherein The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; 5. The vibration and noise reducing apparatus of a pipe pump according to claim 1, wherein The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the pipeline pump (4) and the external pipeline; The first damping structure (1) and the second damping structure (2) are both internally provided with a fluid channel (3) penetrating through the

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