Silencing module and hydraulic power station

Abstract

The utility model relates to the technical field of hydraulic power equipment, in particular to a silencing module and a hydraulic power station. Comprising a first communicating pipe, a first silencing assembly and a second silencing assembly; the first communicating pipe is used for being connected with an air outlet of an engine. The first silencing assembly is connected with the end, deviating from the gas outlet, of the first communicating pipe and is used for carrying out first silencing on the gas; and the second silencing assembly is arranged on one side of the first silencing assembly and communicates with the first silencing assembly through a second communicating pipe, and the second silencing assembly is used for conducting secondary silencing on the gas. By means of the structure, noise can be reduced more remarkably, interference of exhaust noise of an engine to work of operators is effectively reduced, meanwhile, noise pollution to the surrounding application environment is reduced, and comfort and environmental protection performance of the hydraulic power station in the using process are improved.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic power equipment technology, and in particular to a noise reduction module and a hydraulic power station. Background Technology

[0002] Hydraulic power units are mainly used to drive hydraulic tools such as hydraulic submersible pumps, hydraulic breakers, and hydraulic chainsaws in outdoor situations where there is no electricity.

[0003] When a hydraulic power station is in operation, the exhaust from the engine outlet generates significant noise. Existing hydraulic power stations lack corresponding noise reduction structures, resulting in severe noise interference with operators and noise pollution of the surrounding environment. Utility Model Content

[0004] The technical problem to be solved by this utility model embodiment is to provide a noise reduction module and a hydraulic power station to solve the problem that the existing hydraulic power station does not have a corresponding noise reduction structure, which leads to serious noise interference with the operator's work and noise pollution to the surrounding application environment.

[0005] This utility model discloses a noise reduction module, including: a first connecting pipe, a first noise reduction component, and a second noise reduction component; the first connecting pipe is used to connect to the exhaust port of an engine; the first noise reduction component is connected to the end of the first connecting pipe opposite to the exhaust port and is used to perform a first noise reduction on the gas; the second noise reduction component is disposed on one side of the first noise reduction component and is connected to the first noise reduction component through the second connecting pipe, and the second noise reduction component is used to perform a second noise reduction on the gas.

[0006] Optionally, the first silencing assembly includes a first inner tube and a first outer tube sequentially sleeved from the inside out, with the opposite ends of the first inner tube and the first outer tube sealed by a first annular mounting plate; a partition is also sleeved on the first inner tube, which divides the space between the first inner tube and the first outer tube into a first silencing cavity and a second silencing cavity; one end of the first inner tube is connected to the second connecting pipe, and the other end is closed, and a plurality of first vent holes and second vent holes are formed on the side wall of the first inner tube, with the first vent holes connected to the first silencing cavity and the second vent holes connected to the second silencing cavity; one end of the first connecting pipe is located on the side wall of the first outer tube and is connected to the first silencing cavity.

[0007] Optionally, the second silencing component includes: a second inner tube, a silencing tube, and a second outer tube arranged sequentially from the inside to the outside, with the opposite ends of the second inner tube and the second outer tube sealed by a second annular mounting plate; one end of the second inner tube is connected to the end of the second connecting tube away from the first inner tube, and the other end is connected to the external environment, and a plurality of third vent holes are formed on the side wall of the second inner tube; wherein, the silencing tube is made of silencing material.

[0008] Optionally, the second silencing component further includes a support tube, on which a plurality of fourth vent holes are formed. The support tube is located between the second inner tube and the silencing tube, and the support tube maintains a preset distance from the second inner tube. The silencing tube abuts against the support tube.

[0009] Optionally, the first silencing component and the second silencing component are arranged horizontally, and the first connecting pipe is located between the first silencing component and the second silencing component. An air inlet is formed on the side of the first outer pipe near the second silencing component, and the first connecting pipe is connected to the first outer pipe through the air inlet.

[0010] Optionally, the first connecting pipe includes a first bend, a straight pipe, and a second bend connected in sequence, the first bend being connected to the air outlet, and the second bend being connected to the air inlet.

[0011] Optionally, the end of the second inner tube that is opposite to the first connecting tube extends out of the second outer tube.

[0012] Optionally, the second connecting pipe is provided with a first connector for connecting the second connecting pipe to the housing of the hydraulic power station; the first annular mounting plate and the second annular mounting plate are provided with a second connector at the ends opposite to the second connecting pipe for connecting the first annular mounting plate and the second annular mounting plate to the housing of the hydraulic power station.

[0013] Optionally, the first vent and the second vent are evenly distributed on the first inner tube along the circumference of the first inner tube.

[0014] This utility model also discloses a hydraulic power station, including the above-mentioned noise reduction module.

[0015] Compared with the prior art, the beneficial effects of the silencing module and hydraulic power station provided by this utility model embodiment are as follows: The first connecting pipe is used to connect with the engine exhaust port. It is the primary channel for gas to enter the silencing module after being discharged from the engine. The first silencing component is connected to the end of the first connecting pipe away from the exhaust port, and is used to perform the first silencing of the gas, reducing the noise level of the gas. The second silencing component is located on one side of the first silencing component and is connected to the first silencing component through the second connecting pipe. Its function is to perform the second silencing of the gas after the first silencing, further reducing the noise level of the gas. The silencing module and hydraulic power station of this embodiment perform two silencing treatments on the gas discharged from the engine through the first silencing component and the second silencing component, which can significantly reduce noise, effectively reduce the interference of engine exhaust noise on the operator's work, and also reduce noise pollution to the surrounding application environment, improving the comfort and environmental friendliness of the hydraulic power station during use. Attached Figure Description

[0016] The technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0017] Figure 1 This is a schematic diagram of the overall structure of the noise reduction module provided in this embodiment of the utility model;

[0018] Figure 2 This is an exploded view of the noise reduction module provided in this embodiment of the utility model.

[0019] The labels for the attached figures are as follows:

[0020] 10. First connecting pipe; 110. First bend pipe; 120. Straight pipe; 130. Second bend pipe; 20. First silencer assembly; 210. First inner pipe; 2101. First vent hole; 2102. Second vent hole; 220. First outer pipe; 2201. Air inlet; 230. First annular mounting plate; 240. Partition plate; 30. Second silencer assembly; 310. Second inner pipe; 3101. Third vent hole; 320. Silencer pipe; 330. Second outer pipe; 340. Second annular mounting plate; 350. Support pipe; 3501. Fourth vent hole; 40. Second connecting pipe; 50. First connector; 510. Holding plate; 520. Connecting plate; 60. Second connector. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] This utility model embodiment provides a noise reduction module, such as Figure 1As shown, it includes a first connecting pipe 10, a first muffler assembly 20, and a second muffler assembly 30. The first connecting pipe 10 is used to connect to the engine's air outlet (not shown in the figure); the first muffler assembly 20 is connected to the end of the first connecting pipe 10 away from the air outlet and is used to perform the first muffler for the first time; the second muffler assembly 30 is located on one side of the first muffler assembly 20 and is connected to the first muffler assembly 20 through a second connecting pipe 40. The second muffler assembly 30 is used to perform the second muffler for the second time.

[0023] The first connecting pipe 10 connects to the engine exhaust port, serving as the primary channel for gas to enter the muffler module after exhaust from the engine. The first muffler component 20 is connected to the end of the first connecting pipe 10 opposite to the exhaust port, performing initial muffler treatment to reduce the gas noise level. The second muffler component 30 is located on one side of the first muffler component 20 and is connected to it via the second connecting pipe 40. Its function is to further muffle the gas after the initial muffler treatment, further reducing the gas noise level. In this embodiment, the muffler module and hydraulic power station perform two muffler treatments on the engine exhaust gas through the first muffler component 20 and the second muffler component 30, which can significantly reduce noise, effectively reduce the interference of engine exhaust noise on the operator's work, and also reduce noise pollution to the surrounding environment, improving the comfort and environmental friendliness of the hydraulic power station during use.

[0024] The engine outlet and the first connecting pipe 10 can be connected by threaded connection, flange connection or other means to ensure tight connection, prevent gas leakage and ensure the normal operation of the silencing process.

[0025] As a preferred embodiment, refer to Figure 1 and Figure 2 The first silencing component 20 includes a first inner tube 210 and a first outer tube 220 sequentially sleeved from the inside out. The opposite ends of the first inner tube 210 and the first outer tube 220 are closed by a first annular mounting plate 230. A partition 240 is also sleeved on the first inner tube 210, which divides the space between the first inner tube 210 and the first outer tube 220 into a first silencing cavity (not shown in the figure) and a second silencing cavity (not shown in the figure). One end of the first inner tube 210 is connected to the second connecting pipe 40, and the other end is closed. A plurality of first vent holes 2101 and second vent holes 2102 are formed on the side wall of the first inner tube 210. The first vent holes 2101 are connected to the first silencing cavity, and the second vent holes 2102 are connected to the second silencing cavity. One end of the first connecting pipe 10 is located on the side wall of the first outer tube 220 and is connected to the first silencing cavity.

[0026] In this embodiment, the space between the first inner tube 210 and the first outer tube 220 is divided into a first silencing chamber and a second silencing chamber by a partition 240. This is the core area for achieving the first silencing. In actual operation, when gas enters the first silencing chamber from the first connecting pipe 10, some gas enters the first inner tube 210 through the first vent 2101, while the other part of the gas flows in the first silencing chamber and interferes with, rubs, and collides with the chamber wall, consuming sound energy. At the same time, the gas entering the first inner tube 210 enters the second silencing chamber through the second vent 2102, and undergoes the same silencing process again. This multiple energy consumption process can more effectively reduce gas noise, improve the effect of the first silencing, and further enhance the silencing performance of the entire silencing module.

[0027] After the first silencing, the gas enters the second silencing assembly 30 through the connection between the first inner tube 210 and the second connecting tube 40 for a second silencing. The other end of the first inner tube 210 is sealed to prevent gas leakage from that end.

[0028] As a preferred embodiment, refer to Figure 1 and Figure 2 The second silencing component 30 includes a second inner tube 310, a silencing tube 320, and a second outer tube 330 arranged sequentially from the inside to the outside. The two opposite ends of the second inner tube 310 and the second outer tube 330 are sealed by a second annular mounting plate 340. One end of the second inner tube 310 is connected to the end of the second connecting pipe 40 away from the first inner tube 210, and the other end is connected to the external environment. A plurality of third vent holes 3101 are formed on the side wall of the second inner tube 310. The silencing tube 320 is made of silencing material.

[0029] The two ends of the second inner tube 310 and the second outer tube 330 are closed by the second annular mounting plate 340 to form a relatively independent silencing space. One end of the second inner tube 310 is connected to the end of the second connecting pipe 40 away from the first inner tube 210, which is the inlet for gas to enter the second silencing component 30 from the first silencing component 20. The other end is connected to the external environment and serves as the final outlet for the gas after two silencing treatments. Several third vent holes 3101 are formed on the side wall of the second inner tube 310. These third vent holes 3101 are channels for gas to flow inside the second silencing component 30. Gas enters the second inner tube 310 and reaches the silencing pipe 320 along the third vent holes 3101. The silencing pipe 320 is made of silencing material. The silencing material usually has a porous structure or special acoustic properties, which can absorb, reflect and scatter sound waves, thereby reducing the noise generated by gas flow. The silencing gas enters the second inner tube 310 along the third vent holes 3101 and is discharged into the external environment. The presence of the silencer pipe 320 in this embodiment enables the second silencer assembly 30 to further reduce sound energy when gas passes through, achieving a second silencer treatment of the gas. The silencer material in this embodiment can be asbestos.

[0030] Reference Figure 2 The third vent 3101 is distributed sequentially on the first, second and third sections along the length of the second inner tube 310. The third vent 3101 in the first and third sections is more densely distributed than the third vent 3101 in the second section. It is a channel for gas to flow inside the second silencer assembly 30. The third vent 3101 in the second section causes turbulence and can slow down the airflow speed so that the silencer tube can absorb noise more fully and improve the silencer effect.

[0031] As a preferred embodiment, refer to Figure 2 The second silencing component 30 also includes a support tube 350. Several fourth vent holes 3501 are formed on the side wall of the support tube 350. The support tube 350 is located between the second inner tube 310 and the silencing tube 320. The support tube 350 and the second inner tube 310 maintain a preset distance. The silencing tube 320 abuts against the support tube 350.

[0032] The support pipe 350 is located between the second inner pipe 310 and the silencer pipe 320, and maintains a predetermined distance from the second inner pipe 310. This arrangement provides space for gas flow between the second inner pipe 310 and the support pipe 350. The fourth vent 3501 ensures gas flow within the second silencer assembly 30. The silencer pipe 320 rests against the support pipe 350, providing reliable support and preventing deformation or displacement of the silencer pipe 320 under gas pressure and operational vibration. This ensures the stability of the second silencer assembly 30 structure, thereby guaranteeing the continuity and reliability of the silencing effect.

[0033] As a preferred embodiment, refer to Figure 1 and Figure 2 The first muffler assembly 20 and the second muffler assembly 30 are arranged horizontally, and the first connecting pipe 10 is located between the first muffler assembly 20 and the second muffler assembly 30. The first outer pipe 220 has an air inlet 2201 on the side near the second muffler assembly 30, and the first connecting pipe 10 is connected to the first outer pipe 220 through the air inlet 2201.

[0034] This embodiment describes the arrangement of the first muffler assembly 20 and the second muffler assembly 30, as well as the positional relationship of the first connecting pipe 10. The first muffler assembly 20 and the second muffler assembly 30 are arranged horizontally. This horizontal arrangement conforms to the general requirements of the internal spatial layout of the hydraulic power station, facilitating installation and arrangement within the hydraulic power station housing. An air inlet 2201 is formed on the side of the first outer pipe 220 near the second muffler assembly 30. The first connecting pipe 10 is connected to the first outer pipe 220 through this air inlet 2201. This arrangement allows gas discharged from the engine to smoothly enter the first muffler chamber of the first muffler assembly 20 through the first connecting pipe 10. After completing the first muffler, the gas smoothly enters the second muffler assembly 30 through the second connecting pipe 40 for a second muffler treatment, ensuring a reasonable flow path for the gas within the muffler module, thereby improving muffler efficiency and muffler effect.

[0035] As a preferred embodiment, refer to Figure 1 The first connecting pipe 10 includes a first bend 110, a straight pipe 120 and a second bend 130 connected in sequence. The first bend 110 is connected to the air outlet and the second bend 130 is connected to the air inlet 2201.

[0036] The first connecting pipe 10, with its structure consisting of a first bend 110, a straight pipe 120, and a second bend 130, offers significant advantages. Firstly, the bend design allows for easy adjustment of the connection angle, accommodating the installation requirements of the engine exhaust port and the first muffler assembly 20's air inlet 2201 at different positions and directions. This improves the versatility and adaptability of the muffler module, enabling it to be used with various types and structures of hydraulic power units. Secondly, the straight pipe 120 ensures the stability of the gas during transmission, guaranteeing that the gas enters the first muffler assembly 20 in a stable state, thus ensuring the smooth operation of the muffler process. Furthermore, this structural design facilitates the installation and disassembly of the first connecting pipe 10, reducing the difficulty of installation and maintenance and improving work efficiency.

[0037] As a preferred embodiment, refer to Figure 2 The second inner tube 310 extends out of the second outer tube 330 at the end opposite to the first connecting tube 10.

[0038] The prominent outlet end of the second inner tube 310 can generate a certain diffusion effect when the gas is discharged, further reducing the flow rate and noise intensity when the gas is discharged.

[0039] As a preferred embodiment, refer to Figure 1 and Figure 2 A first connector 50 is provided on the second connecting pipe 40 for connecting the second connecting pipe 40 to the housing of the hydraulic power station; a second connector 60 is provided on the end of the first annular mounting plate 230 and the second annular mounting plate 340 opposite to the second connecting pipe 40 for connecting the first annular mounting plate 230 and the second annular mounting plate 340 to the housing of the hydraulic power station.

[0040] Firstly, the various parts of the silencing module are firmly connected to the hydraulic power station housing via the first connector 50 and the second connector 60, ensuring the stability of the silencing module during the operation of the hydraulic power station and preventing the components from loosening or shifting due to vibration, shaking, or other factors, which could affect the silencing effect or even damage the silencing module. Secondly, this installation and fixing method also facilitates the installation, disassembly, and maintenance of the silencing module. When it is necessary to inspect or replace parts of the silencing module, workers can easily remove the silencing module from the hydraulic power station housing using the connectors, reducing maintenance costs and work difficulty, and improving the maintainability of the equipment.

[0041] In this embodiment, refer to Figure 2 The first connecting member 50 consists of a retaining plate 510 and a connecting plate 520. The retaining plate 510 is held on the outer circumferential surface of the second connecting pipe 40 to fix the second connecting pipe 40. The connecting plate 520 can be fixed to the housing of the hydraulic power station (not shown in the figure) by bolts or other fasteners. The second connecting member 60 is connected to the first annular mounting plate 230 and the second annular mounting plate 340 respectively, and is fixed to the housing of the hydraulic power station by bolts or other fasteners.

[0042] As a preferred embodiment, the first vent 2101 and the second vent 2102 are evenly distributed on the first inner tube 210 along the circumference of the first inner tube 210.

[0043] The uniform distribution of the first vent 2101 and the second vent along the circumference of the first inner tube 210 has significant beneficial effects. From the perspective of silencing principles, this allows gas to enter the first and second silencing chambers more evenly, improving the uniformity and overall effect of the first silencing. Furthermore, this uniform distribution design also facilitates the manufacturing and processing of the first silencing component 20, simplifying the production process and ensuring the stability and consistency of product quality.

[0044] This application also discloses a hydraulic power unit, including the noise reduction module in the foregoing embodiments. This hydraulic power unit has the same structure and beneficial effects as the noise reduction module in the foregoing embodiments. The structure and beneficial effects of the noise reduction module have been described in detail in the foregoing embodiments and will not be repeated here.

[0045] It should be understood that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Those skilled in the art can modify the technical solutions described in the above embodiments, or make equivalent substitutions for some of the technical features; and all such modifications and substitutions should fall within the protection scope of the appended claims of this utility model.

Claims

1. A noise reduction module, characterized in that, include: The first connecting pipe is used to connect to the engine's exhaust port; The first silencing component is connected to the end of the first connecting pipe opposite to the air outlet, and is used to perform the first silencing of the gas; The second silencing component is located on one side of the first silencing component and is connected to the first silencing component through a second connecting pipe. The second silencing component is used to perform a second silencing of the gas.

2. The noise reduction module according to claim 1, characterized in that, The first noise reduction assembly includes a first inner tube and a first outer tube that are sequentially sleeved from the inside to the outside, and the two opposite ends of the first inner tube and the first outer tube are closed by a first annular mounting plate. A partition is also fitted on the first inner tube, which divides the space between the first inner tube and the first outer tube into a first silencing cavity and a second silencing cavity. One end of the first inner tube is connected to the second connecting tube, and the other end is closed. The side wall of the first inner tube is formed with a plurality of first vent holes and second vent holes. The first vent holes are connected to the first silencing cavity, and the second vent holes are connected to the second silencing cavity. One end of the first connecting pipe is located on the side wall of the first outer pipe and communicates with the first silencing cavity.

3. The noise reduction module according to claim 2, characterized in that, The second silencing assembly includes: a second inner tube, a silencing tube, and a second outer tube arranged sequentially from the inside to the outside, with the opposite ends of the second inner tube and the second outer tube sealed by a second annular mounting plate; One end of the second inner tube is connected to the end of the second connecting tube away from the first inner tube, and the other end is connected to the external environment. Several third vent holes are formed on the side wall of the second inner tube. The silencer pipe is made of sound-absorbing material.

4. The noise reduction module according to claim 3, characterized in that, The second silencing component also includes a support tube, on which a plurality of fourth vent holes are formed. The support tube is located between the second inner tube and the silencing tube, and the support tube maintains a preset distance from the second inner tube. The silencing tube abuts against the support tube.

5. The noise reduction module according to claim 4, characterized in that, The first silencing component and the second silencing component are arranged horizontally, and the first connecting pipe is located between the first silencing component and the second silencing component. An air inlet is formed on the side of the first outer pipe near the second silencing component, and the first connecting pipe is connected to the first outer pipe through the air inlet.

6. The noise reduction module according to claim 5, characterized in that, The first connecting pipe includes a first bend, a straight pipe, and a second bend connected in sequence. The first bend is connected to the air outlet, and the second bend is connected to the air inlet.

7. The noise reduction module according to claim 3, characterized in that, The end of the second inner tube that is opposite to the first connecting tube extends out of the second outer tube.

8. The noise reduction module according to claim 6, characterized in that, The second connecting pipe is provided with a first connector for connecting the second connecting pipe to the housing of the hydraulic power station; The first annular mounting plate and the second annular mounting plate are provided with a second connector at the end opposite to the second connecting pipe, for connecting the first annular mounting plate and the second annular mounting plate to the housing of the hydraulic power station.

9. The noise reduction module according to claim 8, characterized in that, The first vent and the second vent are evenly distributed on the first inner tube along the circumference of the first inner tube.

10. A hydraulic power station, characterized in that, Includes the noise reduction module as described in any one of claims 1 to 9.

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