Noise reduction buffer device of pumped storage unit

Abstract

The utility model provides a noise reduction and buffer device of a pumped storage unit, which comprises an air inlet mechanism, an air outlet mechanism and a noise reduction mechanism, the silencing mechanism is arranged between the air inlet mechanism and the unit shell, the silencing mechanism comprises an air inlet pipe and a silencing chamber, the air inlet pipe is communicated with the air inlet mechanism, the silencing chamber is communicated with the unit shell, the air inlet pipe extends into the silencing chamber, and the silencing chamber is communicated with the unit shell. A plurality of silencing holes are evenly distributed in the end, away from the air inlet mechanism, of the air inlet pipe, and a plurality of evenly-distributed protruding blocks are fixedly connected to the inner wall of the silencing chamber. The noise reduction and buffering device of the pumped storage unit is good in noise reduction effect, and the stability of the pumped storage unit can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pumped storage units, in particular to a noise reduction buffer device for pumped storage units. Background Art

[0002] The electromechanical equipment required for pumped-storage hydropower generation is generally large and heavy. In most cases, these large electromechanical devices are placed directly on the ground, with their bottoms often in direct contact with the ground, or with simple pads placed under the legs to prevent the machine tools from crushing and fracturing the ground.

[0003] The pumped storage unit in the prior art generates a lot of noise at the air inlet, and the pumped storage unit will shake during operation. The shaking equipment will also generate noise, causing noise pollution and affecting the normal work of the staff. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a noise reduction and buffering device for a pumped storage unit to solve the problem of high noise generated by the pumped storage unit in the prior art.

[0005] Based on the above objectives, the present invention provides a noise reduction and buffering device for a pumped storage unit, comprising:

[0006] An air intake mechanism, the air intake mechanism being arranged on one side of the unit casing;

[0007] A silencer mechanism is provided between the air intake mechanism and the unit housing, the silencer mechanism comprising an air intake pipe and a silencer chamber, the air intake pipe being in communication with the air intake mechanism, the silencer chamber being in communication with the unit housing, the air intake pipe extending into the silencer chamber, a plurality of silencer holes being evenly distributed on one end of the air intake pipe away from the air intake mechanism, and a plurality of evenly distributed protrusions being fixedly connected to an inner wall of the silencer chamber;

[0008] The buffer mechanism is arranged at the bottom of the unit casing.

[0009] Optionally, a connecting chamber is fixedly connected between the air intake mechanism and the unit casing, the silencer chamber is installed in the connecting chamber, the silencer chamber is provided with a first connecting hole connected to the connecting chamber, the connecting chamber is fixedly connected to the unit casing, and the connecting chamber is provided with a second connecting hole connected to the unit casing.

[0010] Optionally, the silencer chamber divides the connecting chamber into two cavities, a return chamber is formed between the side wall of the silencer chamber close to the air intake mechanism and the inner wall of the silencer chamber, and a discharge chamber is formed between the side wall of the silencer chamber close to the unit shell and the inner wall of the silencer chamber. The first connecting hole connects the silencer chamber and the return chamber, and the second connecting hole connects the unit shell and the discharge chamber. A connecting pipe runs through the silencer chamber, and the connecting pipe connects the discharge chamber and the return chamber.

[0011] Optionally, a mounting seat is provided below the unit housing, a mounting groove is provided on the upper surface of the mounting seat, and the bottom of the unit housing is located in the mounting groove;

[0012] The buffer mechanism includes a base plate and a buffer assembly. The base plate is arranged in the mounting groove. The upper surface of the base plate is fixedly connected to the bottom of the unit shell. The buffer assembly is connected to the lower surface of the base plate.

[0013] Optionally, a plurality of buffer cavities are opened downward at the bottom of the mounting groove, and a buffer assembly is provided in each buffer cavity. The buffer assembly includes a connecting rod and a buffer pad. The buffer pad is arranged at the bottom of the buffer cavity, and the top end of the connecting rod is fixedly connected to the lower surface of the base plate, and the bottom end thereof is connected to the buffer pad.

[0014] Optionally, the buffer assembly includes a spring and a sliding pad, the spring is sleeved on the outer surface of the connecting rod, the bottom end of the spring is fixedly connected to the sliding pad, the top end of the spring is fixedly connected to the top wall of the buffer cavity, the upper surface of the sliding pad is fixedly connected to the bottom end of the connecting rod, the lower surface of the sliding pad abuts against the buffer pad, the sliding pad compresses the buffer pad, and the spring is in a stretched state.

[0015] Optionally, a third connecting hole is provided between the buffer cavity and the mounting groove, the connecting rod passes through the third connecting hole, and a resistance-increasing protrusion is provided on the connecting rod, and the resistance-increasing protrusion moves and rubs against the hole wall of the third connecting hole.

[0016] Optionally, the resistance-increasing protrusion is made of elastic rubber material.

[0017] Optionally, the air intake mechanism includes a mounting shell and a fan, the mounting shell is fixedly connected to a side of the muffler mechanism away from the unit casing, the fan is fixedly installed in the mounting shell, and the air intake pipe is fixedly connected to the air outlet of the mounting shell.

[0018] Optionally, the convex surface of the protrusion is arc-shaped.

[0019] As can be seen from the above, the noise reduction and buffering device of a pumped storage unit provided by the present invention comprises an air intake mechanism and a silencer mechanism. During the air intake process of the air intake mechanism, air enters the air intake pipe, and the silencer holes on the air intake pipe can preliminarily eliminate the noise generated during the rapid movement of the airflow. After the air passes through the silencer holes and enters the interior of the silencer chamber, the inner wall of the silencer chamber forms an uneven plane due to the arrangement of the protrusions. When the sound waves reach the inner wall of the silencer chamber, they are scattered. The scattered sound waves intersect with each other, and the sound wave energy consumes each other to achieve the effect of noise reduction, thereby achieving the purpose of secondary noise reduction, and effectively reducing the noise generated by the friction of the rapid movement of the airflow during the air intake mechanism blowing in the air.

[0020] The utility model also provides a buffer mechanism, which is arranged at the bottom of the unit casing. The buffer mechanism can offset the impact force generated by the vibration of the unit casing, effectively absorb the vibration of the pumped storage unit, and thus reduce inertial vibration to avoid resonance, so that the pumped storage unit can absorb vibration while maintaining good support, thereby improving the stability of the pumped storage unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram showing the position of the air intake mechanism and the unit housing according to an embodiment of the present utility model;

[0023] Figure 2 A schematic diagram showing the structure of a silencing chamber according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram showing the structure of the return cavity and the discharge cavity according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic structural diagram showing a buffer mechanism according to an embodiment of the present invention.

[0026] Figure numerals: 1. air intake mechanism; 11. unit casing; 12. mounting shell; 13. fan; 2. silencer mechanism; 21. air intake pipe; 211. silencer hole; 22. silencer chamber; 221. protrusion; 222. first connecting hole; 223. return chamber; 224. discharge chamber; 225. connecting pipe; 3. buffer mechanism; 31. bottom plate; 32. buffer assembly; 321. connecting rod; 3211. resistance-increasing protrusion; 322. buffer pad; 323. spring; 324. sliding pad; 4. connecting chamber; 41. second connecting hole; 5. mounting seat; 51. mounting groove; 52. buffer chamber; 53. third connecting hole. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0028] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present invention should have the usual meanings understood by people with ordinary skills in the field to which the present disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0029] like Figure 1 and Figure 2 As shown, the utility model provides a noise reduction buffer device for a pumped storage unit, comprising:

[0030] The air intake mechanism 1 is provided on one side of the unit housing 11;

[0031] The silencer mechanism 2 is arranged between the air intake mechanism 1 and the unit housing 11. Figure 2 and Figure 3 As shown, the muffler mechanism 2 includes an air intake pipe 21 and a muffler chamber 22. The air intake pipe 21 is connected to the air intake mechanism 1, and the muffler chamber 22 is connected to the unit housing 11. The air intake pipe 21 extends into the muffler chamber 22. A plurality of muffler holes 211 are evenly distributed on one end of the air intake pipe 21 away from the air intake mechanism 1. A plurality of evenly distributed protrusions 221 are fixedly connected to the inner wall of the muffler chamber 22.

[0032] The buffer mechanism 3 is arranged at the bottom of the unit casing 11.

[0033] Specifically, during the intake process of the intake mechanism 1, air enters the intake pipe 21. The silencer holes 211 on the intake pipe 21 can initially eliminate the noise generated during the rapid movement of the airflow. After the air passes through the silencer holes 211 and is transferred to the interior of the silencer chamber 22, the inner wall of the silencer chamber 22 forms an uneven surface due to the setting of the protrusions 221. When the sound waves reach the inner wall of the silencer chamber 22, they are scattered. The scattered sound waves intersect with each other, and the sound wave energy consumes each other to achieve the effect of noise reduction, thereby achieving the purpose of secondary noise reduction, effectively reducing the noise generated by the rapid movement and friction of the airflow during the process of the air intake mechanism 1 blowing in the air. The buffer mechanism 3 is provided at the bottom of the unit housing 11. The buffer mechanism 3 can offset the impact force generated by the vibration of the unit housing 11, effectively absorb the vibration of the pumped storage unit, and thus reduce inertial vibration and avoid resonance, so that the pumped storage unit can absorb vibration while maintaining good support, thereby improving the stability of the pumped storage unit.

[0034] Further, such as Figure 2 and Figure 3 As shown, the air intake mechanism 1 is fixedly connected to the air intake pipe 21, and the end of the air intake pipe 21 away from the air intake mechanism 1 extends into the muffler chamber 22. The portion of the air intake pipe 21 on which the muffler holes 211 are evenly distributed is completely located in the muffler chamber 22. The convex surface of the protrusion 221 on the inner wall of the muffler chamber 22 can be arc-shaped, rectangular or triangular. In the present application, the convex surface of the protrusion 221 is preferably arc-shaped. The arc-shaped convex surface has a better effect of scattering sound waves, which is beneficial to noise reduction.

[0035] In some embodiments, as Figure 2 and Figure 3 As shown, a connecting chamber 4 is fixedly connected between the air intake mechanism 1 and the unit housing 11, and a muffler chamber 22 is installed in the connecting chamber 4. The muffler chamber 22 is provided with a first connecting hole 222 connected to the connecting chamber 4. The connecting chamber 4 is fixedly connected to the unit housing 11, and a second connecting hole 41 connected to the unit housing 11 is provided on the connecting chamber 4.

[0036] Specifically, the air intake pipe 21 is located within the connecting chamber 4 and communicates with the air intake mechanism 1. The end of the air intake pipe 21 away from the air intake mechanism 1 extends into the muffler chamber 22. The connecting chamber 4 is used to connect the air intake mechanism 1 and the unit housing 11 and is also used to install the muffler chamber 22. Air that has undergone secondary mufflement in the muffler chamber 22 enters the connecting chamber 4 from the muffler chamber 22 through the first connecting hole 222. The connecting chamber 4 can effectively reduce the air flow rate and turbulence during air flow, thereby effectively reducing the noise generated by the rapid movement of air.

[0037] In some embodiments, as Figure 2 and Figure 3As shown, the muffler chamber 22 divides the connecting chamber 4 into two cavities, and a return chamber 223 is formed between the side wall of the muffler chamber 22 close to the air intake mechanism 1 and the inner wall of the muffler chamber 22, and a discharge chamber 224 is formed between the side wall of the muffler chamber 22 close to the unit shell 11 and the inner wall of the muffler chamber 22. The first connecting hole 222 connects the muffler chamber 22 and the return chamber 223, and the second connecting hole 41 connects the unit shell 11 and the discharge chamber 224. A connecting pipe 225 runs through the muffler chamber 22, and the connecting pipe 225 connects the discharge chamber 224 and the return chamber 223.

[0038] Specifically, the top of the silencing chamber 22 is fixedly connected to the top inner wall of the connecting chamber 4, and the bottom of the silencing chamber 22 is fixedly connected to the bottom inner wall of the connecting chamber 4. The silencing chamber 22 divides the connecting chamber 4 into two left and right cavities: the cavity near the air intake mechanism 1 is the return chamber 223, and the cavity near the unit housing 11 is the discharge chamber 224. The design of the return chamber 223, the discharge chamber 224, and the connecting pipe 225 extends the air flow path, further reduces the air flow rate, and thus further reduces the noise generated by the rapid air flow.

[0039] In some embodiments, as Figure 2 and Figure 4 As shown, a mounting seat 5 is provided under the unit casing 11, and a mounting groove 51 is provided downward on the upper surface of the mounting seat 5, and the bottom of the unit casing 11 is located in the mounting groove 51; the buffer mechanism 3 includes a base plate 31 and a buffer assembly 32, the base plate 31 is provided in the mounting groove 51, the upper surface of the base plate 31 is fixedly connected to the bottom of the unit casing 11, and the buffer assembly 32 is connected to the lower surface of the base plate 31.

[0040] Specifically, the unit housing 11 abuts against the inner wall of the mounting groove 51. When the unit housing 11 shakes, the inner wall of the mounting groove 51 can limit the lateral displacement of the unit housing 11, thereby improving the stability of the unit housing 11. The side wall of the bottom plate 31 abuts against the inner wall of the mounting groove 51, and the mounting groove 51 can limit the lateral movement of the bottom plate 31, thereby improving the stability of the unit housing 11 located on the bottom plate 31. The buffer assembly 32 located under the bottom plate 31 can offset the impact force generated by the vibration of the unit housing 11, effectively absorbing the vibration of the pumped-storage unit, thereby reducing inertial vibration and avoiding resonance. This allows the pumped-storage unit to absorb vibration while maintaining good support, thereby improving the stability of the pumped-storage unit.

[0041] In some embodiments, as Figure 4 As shown, a plurality of buffer cavities 52 are opened downward at the bottom of the mounting groove 51, and a buffer assembly 32 is provided in each buffer cavity 52. ​​The buffer assembly 32 includes a connecting rod 321 and a buffer pad 322. The buffer pad 322 is provided at the bottom of the buffer cavity 52. ​​The top end of the connecting rod 321 is fixedly connected to the lower surface of the base plate 31, and the bottom end thereof is connected to the buffer pad 322.

[0042] Specifically, the vibration generated by the unit casing 11 is transmitted to the connecting rod 321 through the bottom plate 31. Due to the limitation of the mounting base 5, the generated vibration is transmitted downward, and then transmitted to the connecting rod 321 through the bottom plate 31, so that the connecting rod 321 moves downward, and the connecting rod 321 compresses the buffer pad 322. The buffer pad 322 effectively alleviates the vibration generated by the unit casing 11, thereby reducing the noise generated by the vibration of the unit casing 11 and improving the stability of the unit casing 11.

[0043] In some embodiments, as Figure 4 As shown, the buffer assembly 32 includes a spring 323 and a sliding pad 324. The spring 323 is sleeved on the outer surface of the connecting rod 321. The bottom end of the spring 323 is fixedly connected to the sliding pad 324. The top of the spring 323 is fixedly connected to the top wall of the buffer cavity 52. ​​The upper surface of the sliding pad 324 is fixedly connected to the bottom end of the connecting rod 321. The lower surface of the sliding pad 324 abuts against the buffer pad 322. The sliding pad 324 compresses the buffer pad 322, and the spring 323 is in a stretched state.

[0044] Specifically, the sliding pad 324 moves up and down within the buffer chamber 52, driven by the connecting rod 321. The vertical sidewalls of the sliding pad 324 abut against the inner wall of the buffer chamber 52, thereby increasing the contact area between the sliding pad 324 and the buffer pad 322. As the connecting rod 321 drives the sliding pad 324 downward, the sliding pad 324 stretches the spring 323 and compresses the buffer pad 322. The downward impact force generated by the vibration needs to overcome the elastic force of the buffer pad 322 and the spring 323. Therefore, the buffer pad 322 and the spring 323 can offset a portion of the downward impact force, effectively absorbing the vibration of the pumped-storage unit, thereby reducing inertial vibration and avoiding resonance, thereby reducing the noise generated by the vibration in the unit housing 11 and improving the stability of the unit housing 11.

[0045] In some embodiments, as Figure 4 As shown, a third connecting hole 53 is provided between the buffer cavity 52 and the mounting groove 51, and the connecting rod 321 passes through the third connecting hole 53. A resistance-increasing protrusion 3211 is provided on the connecting rod 321. The resistance-increasing protrusion 3211 moves and rubs against the hole wall of the third connecting hole 53. The resistance-increasing protrusion 3211 is made of elastic rubber material.

[0046] Specifically, the setting of the resistance-increasing protrusion 3211 can increase the friction with the inner wall of the mounting groove 51 during the downward movement of the connecting rod 321, further eliminating the impact force generated by the vibration, and thereby reducing the impact force generated by the vibration from being transmitted to the outside through the mounting seat 5, thereby further reducing the noise generated by the vibration of the unit housing 11 and further improving the stability of the unit housing 11.

[0047] In some embodiments, as Figure 2 and Figure 3As shown, the air intake mechanism 1 includes a mounting shell 12 and a fan 13. The mounting shell 12 is fixedly connected to the side of the silencer mechanism 2 away from the unit housing 11. The fan 13 is fixedly installed in the mounting shell 12, and the air intake pipe 21 is fixedly connected to the air outlet of the mounting shell 12.

[0048] Specifically, the air intake mechanism 1 is simple in design, easy to install, and has a large air output, which can meet the working requirements of the pumped storage unit.

[0049] The specific usage process of this application is as follows:

[0050] For example, the fan 13 is turned on, and air enters the air inlet pipe 21. The silencer holes 211 on the air inlet pipe 21 can preliminarily eliminate the noise generated during the rapid movement of the airflow. After the air passes through the silencer holes 211 and is transmitted to the inside of the silencer chamber 22, the uneven inner wall of the silencer chamber 22 scatters the sound waves. The scattered sound waves cross each other, and the sound wave energy consumes each other to achieve the effect of noise reduction, thereby realizing secondary noise reduction. The air in the silencer chamber 22 enters the return chamber 223 through the first connecting hole 222, and then enters the connecting pipe 225 from the return chamber 223, and enters the discharge chamber 224 from the connecting pipe 225, and finally enters the unit casing 11 from the discharge chamber 224 through the second connecting hole 41. The design of the return chamber 223, the discharge chamber 224 and the connecting pipe 225 extends the air flow path, further reduces the air flow rate, and thus further reduces the noise generated by the rapid flow of air.

[0051] The vibration generated by the unit casing 11 is transmitted to the connecting rod 321 through the base plate 31. Due to the limitation of the mounting seat 5, the generated vibration is transmitted downward and then transmitted to the connecting rod 321 through the base plate 31, causing the connecting rod 321 to move downward, and the connecting rod 321 drives the sliding pad 324 to move downward. During this process, the sliding pad 324 stretches the spring 323 and compresses the buffer pad 322. The downward impact force generated by the vibration needs to overcome the elastic force of the buffer pad 322 and the spring 323 themselves. Therefore, the buffer pad 322 and the spring 323 can offset part of the downward impact force, effectively absorb the vibration of the pumped storage unit, and thus reduce inertial jitter, avoid resonance, thereby reducing the noise generated by the vibration of the unit casing 11 and improving the stability of the unit casing 11.

[0052] The noise reduction and buffer device of the pumped storage unit in the utility model can achieve multi-stage noise reduction, effectively reduce the noise generated during the flow of air, and effectively absorb the vibration of the pumped storage unit, thereby reducing inertial vibration and avoiding resonance, thereby further reducing the noise generated by vibration of the unit casing 11 and improving the stability of the unit casing 11.

[0053] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present disclosure (including the claims) is limited to these examples. Within the scope of the present invention, the above embodiments or technical features in different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0054] The embodiments of the present invention are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A noise reduction buffer device for a pumped storage unit, characterized in that: include: An air intake mechanism (1), the air intake mechanism (1) being arranged on one side of the unit housing (11); A silencer mechanism (2), the silencer mechanism (2) being arranged between the air intake mechanism (1) and the unit housing (11), the silencer mechanism (2) comprising an air intake pipe (21) and a silencer chamber (22), the air intake pipe (21) being in communication with the air intake mechanism (1), the silencer chamber (22) being in communication with the unit housing (11), the air intake pipe (21) extending into the silencer chamber (22), a plurality of silencer holes (211) being evenly distributed on one end of the air intake pipe (21) away from the air intake mechanism (1), and a plurality of evenly distributed protrusions (221) being fixedly connected to the inner wall of the silencer chamber (22); A buffer mechanism (3) is provided at the bottom of the unit housing (11).

2. A noise reduction and buffering device for a pumped storage unit according to claim 1, characterized in that: A connecting chamber (4) is fixedly connected between the air intake mechanism (1) and the unit housing (11); the muffler chamber (22) is installed in the connecting chamber (4); the muffler chamber (22) is provided with a first communicating hole (222) communicating with the connecting chamber (4); the connecting chamber (4) is fixedly connected to the unit housing (11); and the connecting chamber (4) is provided with a second communicating hole (41) communicating with the unit housing (11).

3. A noise reduction and buffering device for a pumped storage unit according to claim 2, characterized in that: The muffler chamber (22) divides the connecting chamber (4) into two cavities. A return chamber (223) is formed between the side wall of the muffler chamber (22) close to the air intake mechanism (1) and the inner wall of the muffler chamber (22). A discharge chamber (224) is formed between the side wall of the muffler chamber (22) close to the unit housing (11) and the inner wall of the muffler chamber (22). The first connecting hole (222) connects the muffler chamber (22) and the return chamber (223). The second connecting hole (41) connects the unit housing (11) and the discharge chamber (224). A connecting pipe (225) runs through the muffler chamber (22). The connecting pipe (225) connects the discharge chamber (224) and the return chamber (223).

4. The noise reduction and buffering device of a pumped storage unit according to claim 1, characterized in that: A mounting seat (5) is provided below the unit housing (11), a mounting groove (51) is provided on the upper surface of the mounting seat (5) facing downward, and the bottom of the unit housing (11) is located in the mounting groove (51); The buffer mechanism (3) comprises a base plate (31) and a buffer assembly (32); the base plate (31) is arranged in a mounting groove (51); the upper surface of the base plate (31) is fixedly connected to the bottom of the unit housing (11); and the buffer assembly (32) is connected to the lower surface of the base plate (31).

5. A noise reduction and buffering device for a pumped storage unit according to claim 4, characterized in that: The bottom of the mounting groove (51) is provided with a plurality of buffer cavities (52) downwardly, and each buffer cavity (52) is provided with a buffer assembly (32), and the buffer assembly (32) includes a connecting rod (321) and a buffer pad (322), and the buffer pad (322) is provided at the bottom of the buffer cavity (52), and the top end of the connecting rod (321) is fixedly connected to the lower surface of the bottom plate (31), and the bottom end thereof is connected to the buffer pad (322).

6. A noise reduction and buffering device for a pumped storage unit according to claim 5, characterized in that: The buffer assembly (32) includes a spring (323) and a sliding pad (324), wherein the spring (323) is sleeved on the outer surface of the connecting rod (321), the bottom end of the spring (323) is fixedly connected to the sliding pad (324), the top end of the spring (323) is fixedly connected to the top wall of the buffer cavity (52), the upper surface of the sliding pad (324) is fixedly connected to the bottom end of the connecting rod (321), the lower surface of the sliding pad (324) is in contact with the buffer pad (322), the sliding pad (324) compresses the buffer pad (322), and the spring (323) is in a stretched state.

7. The noise reduction and buffering device of a pumped storage unit according to claim 6, characterized in that: A third communicating hole (53) is provided between the buffer cavity (52) and the mounting groove (51); the connecting rod (321) passes through the third communicating hole (53); a resistance-increasing protrusion (3211) is provided on the connecting rod (321); the resistance-increasing protrusion (3211) moves and rubs against the hole wall of the third communicating hole (53).

8. The noise reduction and buffering device of a pumped storage unit according to claim 7, characterized in that: The resistance-increasing protrusion (3211) is made of elastic rubber material.

9. The noise reduction and buffering device of a pumped storage unit according to claim 1, characterized in that: The air intake mechanism (1) comprises a mounting shell (12) and a fan (13); the mounting shell (12) is fixedly connected to a side of the muffler mechanism (2) away from the unit housing (11); the fan (13) is fixedly installed in the mounting shell (12); and the air intake pipe (21) is fixedly connected to the air outlet of the mounting shell (12).

10. The noise reduction and buffering device of a pumped storage unit according to claim 1, characterized in that: The convex surface of the convex block (221) is in an arc shape.

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