CN117639367A

CN117639367A - Noise reduction type excitation generator set

Info

Publication number: CN117639367A
Application number: CN202311666906.2A
Authority: CN
Inventors: 许萍萍; 濮玉平; 戴于祥; 朱从旺
Original assignee: Yangzhou Deneweke Power Supply Co ltd
Current assignee: Yangzhou Deneweke Power Supply Co ltd
Priority date: 2023-12-07
Filing date: 2023-12-07
Publication date: 2024-03-01

Abstract

The invention relates to the field of excitation generator set equipment, in particular to a noise reduction excitation generator set. The noise reduction type excitation generator set comprises a base and an excitation generator set main body arranged on the base; the vibration isolation base is arranged at the bottom of the base, sliding grooves are symmetrically formed in two sides of the vibration isolation base, split sealing covers are arranged on the sliding grooves, and ventilation pipes are embedded at the ends, away from each other, of the two split sealing covers; the silencing mechanism is used for eliminating noise and is embedded in the ventilating pipe, the silencing mechanism comprises connecting pieces, a plurality of connecting pieces are detached and installed in a plurality of clamping grooves formed in the inner side wall of the ventilating pipe, and one ends, away from the ventilating pipe, of the connecting pieces are connected with silencing sleeves together; the suspension plate is arranged at the top of the inner cavity of the sealing cover, and a plurality of sound-electricity conversion mechanisms are embedded on the suspension plate at equal intervals. The noise-reduction excitation generator set provided by the invention has the advantages of comprehensive noise elimination and recyclable noise.

Description

Noise reduction type excitation generator set

Technical Field

The invention relates to the field of excitation generator set equipment, in particular to a noise reduction excitation generator set.

Background

The generator set is complete mechanical equipment for converting other forms of energy into electric energy, and consists of a power system, a control system, a silencing system, a damping system and an exhaust system. The principle is that the temperature is rapidly increased when the volume of the diesel engine generator set is reduced, and the ignition point of diesel oil is reached. The diesel oil is ignited, the mixed gas burns vigorously, the volume expands rapidly, and the piston is pushed to move downwards, which is called as work. The cylinders sequentially apply work according to a certain sequence, and thrust acting on the piston is changed into force for pushing the crankshaft to rotate through the connecting rod, so that the crankshaft is driven to rotate. The exciting generator makes the generator rotor form a rotating magnetic field according to the electromagnetic induction principle, then the generator rotor is driven by a power machine through the electromagnetic induction principle, the generator outputs induced electromotive force, and current is generated through a closed load loop. The types of the generator sets are a diesel generator set, a gas generator set, a gasoline generator set and the like.

However, when the existing excitation generator set is used for generating power by utilizing the power machine, relatively large noise can be generated, and the noise of the generator set directly affects the health, work and life of people. Along with the gradual improvement of the environmental requirements of people, according to the working principle of a diesel generator set, the noise generation is very complex, and the reasons and parts of the noise generation are divided into exhaust noise, mechanical noise, combustion noise, cooling fans, exhaust noise, air inlet noise and generator noise, and aiming at the noise generated by the generator set, the prior art mainly adopts a complicated soundproof house which is difficult to move along with the generator set to carry out soundproof and noise elimination on the whole generator set, but the noise elimination is very limited because the power machine does work and needs air inlet and exhaust.

Therefore, it is necessary to provide a new noise reduction type excitation generator set to solve the above technical problems.

Disclosure of Invention

In order to solve the technical problems, the invention provides the noise reduction type excitation generator set with comprehensive noise elimination and recyclable noise.

The noise reduction type excitation generator set provided by the invention comprises: the excitation generator comprises a base and an excitation generator set main body arranged on the base;

the vibration isolation base is arranged at the bottom of the base, sliding grooves are symmetrically formed in two sides of the vibration isolation base, split sealing covers are arranged on the sliding grooves, and ventilation pipes are embedded at the ends, away from each other, of the two split sealing covers;

the silencing mechanism is used for eliminating noise and is embedded in the ventilating pipe, the silencing mechanism comprises connecting pieces, a plurality of connecting pieces are detached and installed in a plurality of clamping grooves formed in the inner side wall of the ventilating pipe, one ends of the connecting pieces, deviating from the ventilating pipe, are jointly connected with silencing sleeves, one ends of the silencing sleeves are provided with air deflectors, a plurality of air guide holes are uniformly formed in the air deflectors, the air deflectors are communicated with the other ends of the silencing sleeves, a plurality of silencing elbows are sleeved at the same end of each silencing sleeve, and punching silencing pipes are sleeved at the same ends of the silencing elbows and comprise the silencing elbows;

the suspension plate is arranged at the top of the inner cavity of the sealing cover, and a plurality of sound-electricity conversion mechanisms are embedded on the suspension plate at equal intervals.

Preferably, the connecting piece includes outer cutting, outer cutting peg graft with in the draw-in groove, and outer stationary blade is installed to outer cutting's one end, outer stationary blade passes through the screw and can dismantle with the one end of ventilation pipe and be connected, and a plurality of connecting spring is evenly installed to outer cutting one end that deviates from the draw-in groove, a plurality of connecting spring deviates from outer cutting one end be connected with the interpolation strip of pegging graft with the amortization sleeve jointly, interior stationary blade is installed to the one end of interior cutting, interior stationary blade passes through the screw and can dismantle with the one end of amortization sleeve and be connected.

Preferably, the outer side wall of the silencing sleeve is uniformly provided with a plurality of T-shaped grooves, and the T-shaped grooves are in plug-in fit with the inner inserting strips.

Preferably, a silencing grid is arranged between the air deflector and the silencing elbow in the ventilation pipe, and sound absorbing cotton is filled in a gap between the inner side wall of the ventilation pipe and the outer side wall of the silencing sleeve.

Preferably, a plurality of punching silencing plates are arranged on one side, located on the ventilating pipe, of each sealing cover, and sound absorption layers are arranged on the inner side walls of the two sealing covers.

Preferably, the sound absorbing layer is a flame retardant perforated sound absorbing panel.

Preferably, the acoustic rotating mechanism comprises a resonance ball and a supporting seat, a resonance cavity is arranged in the resonance ball, a sound collecting cover communicated with the resonance cavity is embedded at the bottom end of the resonance ball, a resonance tube is embedded at the top end of the resonance ball, the resonance tube is fixedly connected with a suspension plate, a sealing diaphragm is installed in an inner cavity of the resonance tube communicated with the resonance cavity, a connecting rod is installed at the top end of the sealing diaphragm, a connecting seat is welded at one end of the connecting rod, which is away from the sealing diaphragm, a transmission rod is hinged to the connecting seat, the supporting seat is installed on the suspension plate and is located at one side of the resonance tube, a transmission disc is installed on the supporting seat in a rotating mode through a bearing, a micro generator is installed on one side of the transmission disc, a connecting column is installed at one end edge of the transmission disc, which faces away from the connecting seat, a transmission shaft is installed at the other end of the transmission disc, and the transmission shaft is coaxially and fixedly connected with a driving shaft of the micro generator through a coupling.

Preferably, the transmission shaft and the transmission disc are coaxially arranged.

Preferably, the T-shaped limit grooves are formed in the ends, close to each other, of the two split sealing covers, and a limit mechanism for locking the two sealing covers is mounted at the top end of one sealing cover and is in plug-in fit with the T-shaped limit grooves.

Preferably, the stop gear includes the guide arm, two the guide arm symmetry install in the upper surface of sealed cowling, and the top of two guide arms is fixed mounting has the backup pad jointly, electric telescopic handle is installed to the bottom of backup pad, electric telescopic handle's flexible end is towards the below to fixed mounting has the limiting plate, the I-shaped piece is installed at the both ends of limiting plate, I-shaped piece and T type spacing groove grafting cooperation, and the limiting plate offer with two guide arm sliding fit's slide hole.

Compared with the related art, the noise reduction type excitation generator set provided by the invention has the following beneficial effects:

1. the invention provides a noise reduction type excitation generator set, which is characterized in that a sealing cover is arranged on a vibration isolation base in a split way, a silencing mechanism is arranged on the sealing cover, and the silencing mechanism can comprehensively eliminate noise of air inlet and air outlet of the generator set by utilizing the cooperation of a connecting piece, an outer cutting, an outer fixing piece, a connecting spring, an inner cutting, an inner fixing piece, a silencing sleeve, an air deflector, a silencing grid, sound absorbing cotton, a silencing elbow and a punched silencing pipe, so that noise interference of the generator set is reduced;

2. the seal cover is internally provided with a punching noise reduction plate and a sound absorption layer for further noise reduction;

3. through setting up sound commentaries on classics electric mechanism in the sealed cowling, sound commentaries on classics electric mechanism utilizes resonance spheroid, collection sound cowling, resonance tube, sealing diaphragm, connecting rod, connecting seat, transfer line, supporting seat, driving disk, spliced pole, transmission shaft, microgenerator and the cooperation in resonance chamber, can make full use of the noise of whole generator frame to convert the electricity generation to fully retrieve the noise, convert into the electric energy.

Drawings

FIG. 1 is a schematic diagram of a noise reduction excitation generator set according to a preferred embodiment of the present invention;

fig. 2 is a schematic structural diagram of another view angle of the noise reduction excitation generator set provided by the invention;

fig. 3 is a schematic structural diagram of the inside of the noise reduction excitation generator set provided by the invention;

FIG. 4 is a schematic view of a structure of a vent pipe with a silencing mechanism according to the present invention;

FIG. 5 is a schematic view of an explosive structure of the vent pipe provided with a silencing mechanism according to the present invention;

FIG. 6 is a schematic diagram of a structure of an acoustic power conversion mechanism according to the present invention;

FIG. 7 is an enlarged view of a portion of A shown in FIG. 1;

fig. 8 is a partial enlarged view of B shown in fig. 5.

Reference numerals in the drawings: 1. a base; 2. an excitation generator set main body; 3. a shock isolation base; 301. a chute; 4. a sealing cover; 41. a ventilation pipe; 42. punching a sound deadening plate; 43. a sound absorbing layer; 401. a T-shaped limit groove; 402. a clamping groove; 5. a silencing mechanism; 51. a connecting piece; 511. an outer cutting; 512. an outer fixing piece; 513. a connecting spring; 514. inserting strips; 515. an inner fixing piece; 52. a sound damping sleeve; 53. an air deflector; 54. a sound-deadening grille; 55. sound absorbing cotton; 56. silencing elbow; 57. punching a silencing pipe; 501. an air guide hole; 502. a T-shaped groove; 6. a suspension plate; 7. an acoustic-to-electric mechanism; 71. resonance sphere; 72. a sound collecting cover; 73. a resonance tube; 74. a sealing membrane; 75. a connecting rod; 751. a connecting seat; 76. a transmission rod; 77. a support base; 78. a drive plate; 781. a connecting column; 782. a transmission shaft; 79. a micro-generator; 701. a resonance chamber; 8. a limiting mechanism; 81. a guide rod; 82. a support plate; 83. an electric telescopic rod; 84. a limiting plate; 85. i-shaped blocks.

Detailed Description

The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.

Specific implementations of the invention are described in detail below in connection with specific embodiments.

Referring to fig. 1 to 8, a noise reduction excitation generator set provided by an embodiment of the present invention includes: the excitation generator comprises a base 1, an excitation generator set main body 2, a vibration isolation base 3, a sealing cover 4, a silencing mechanism 5, a suspension plate 6 and an acoustic rotation mechanism 7.

A base 1, an excitation generator set main body 2 mounted on the base 1,

the vibration isolation base 3 is arranged at the bottom of the base 1, sliding grooves 301 are symmetrically formed in two sides of the vibration isolation base 3, split sealing covers 4 are arranged on the sliding grooves 301, and ventilation pipes 41 are embedded at the ends, away from each other, of the two split sealing covers 4;

the silencing mechanism 5 is used for eliminating noise, the silencing mechanism 5 is embedded in the ventilation pipe 41, the silencing mechanism 5 comprises connecting pieces 51, a plurality of connecting pieces 51 are detachably arranged in a plurality of clamping grooves 402 formed in the inner side wall of the ventilation pipe 41, one ends of the connecting pieces 51, which are away from the ventilation pipe 41, are jointly connected with a silencing sleeve 52, one ends of the silencing sleeve 52 are provided with air deflectors 53, a plurality of air guide holes 501 are uniformly formed in the air deflectors 53, the air deflectors 53 are communicated with the other ends of the silencing sleeve 52, a plurality of silencing elbows 56 are communicated with one another, a punching silencing pipe 57 is sleeved at the same end of the silencing sleeve 52, and the punching silencing pipe 57 comprises a plurality of silencing elbows 56;

the suspension plate 6 is arranged at the top of the inner cavity of the sealing cover 4, and a plurality of sound-electricity conversion mechanisms 7 are embedded on the suspension plate 6 at equal intervals.

It should be noted that: when the excitation generator set main body 2 works, the split sealing cover 4 is closed, the whole excitation generator set main body 2 is closed, the hood is covered, when the engine such as a diesel engine is started by oil inlet, the noise of the air inlet and the exhaust is eliminated through the noise elimination mechanism 5 when the air inlet and the exhaust are exhausted, air enters the noise elimination sleeve 52 from the air guide holes 501 of the air guide plate 53 when the engine is in air inlet, then is subjected to noise elimination through the noise elimination elbow 56, so that the air entering the sealing cover 4 is subjected to noise elimination, the noise elimination elbow 56 is further wrapped by the punching noise elimination pipe 57, the noise is further eliminated, so that the overall noise elimination is performed, the exhaust is exhausted from the air guide plate 53 when the engine is exhausted, the noise elimination is performed on the exhaust part, the air inlet noise and the exhaust noise are solved, the mechanical noise, the combustion noise, the cooling fan, the exhaust noise and the generator noise in the sealing cover 4 are absorbed by the punching noise elimination plate 42 and the sound absorption layer 43, then the noise is subjected to power generation by the sound conversion mechanism 7, the noise is fully utilized, and the noise is further utilized to generate power, and the noise is further utilized to realize power generation, and the noise pollution noise is further, the noise is reasonably utilized, and the energy is saved, and the energy is further utilized.

In the embodiment of the present invention, referring to fig. 1, 4, 5 and 8, the connecting piece 51 includes an external insertion strip 511, the external insertion strip 511 is inserted into the clamping groove 402, one end of the external insertion strip 511 is provided with an external fixing piece 512, the external fixing piece 512 is detachably connected with one end of the ventilation pipe 41 through a screw, one end of the external insertion strip 511, which is away from the clamping groove 402, is uniformly provided with a plurality of connecting springs 513, one end of the plurality of connecting springs 513, which is away from the external insertion strip 511, is commonly connected with an interpolation strip 514 inserted into the silencing sleeve 52, one end of the interpolation strip 514 is provided with an internal fixing piece 515, and the internal fixing piece 515 is detachably connected with one end of the silencing sleeve 52 through a screw;

a plurality of T-shaped grooves 502 are uniformly formed in the outer side wall of the silencing sleeve 52, and the T-shaped grooves 502 are in plug-in fit with the inner inserting strips 514.

It should be noted that: the silencing sleeve 52 is connected with the ventilating pipe 41 through the plurality of connecting pieces 51, the connecting pieces 51 are inserted into the clamping groove 402 of the ventilating pipe 41 through the external inserting strips 511 when connected, the internal inserting strips 514 are inserted into the T-shaped groove 502 formed in the silencing sleeve 52, the external inserting strips 511 and the internal inserting strips 514 are connected through the connecting springs 513, so that soft connection is formed, and mechanical vibration of the silencing sleeve 52 caused by wind and gas can be reduced when the wind and gas enter the silencing sleeve 52 or exhaust gas passes through the silencing sleeve 52, and mechanical noise is generated.

In the embodiment of the present invention, referring to fig. 1, 4 and 5, a silencing grille 54 is disposed between an air deflector 53 and a silencing elbow 56 in the ventilation pipe 41, and a gap between an inner side wall of the ventilation pipe 41 and an outer side wall of the silencing sleeve 52 is filled with sound absorbing cotton 55;

it should be noted that: when the noise reduction sleeve 52 is used for noise reduction, noise reduction is further performed by the noise reduction grille 54 and the sound absorbing cotton 55.

In the embodiment of the present invention, referring to fig. 1, 2 and 7, a plurality of punching noise-reducing plates 42 are installed on one side of the ventilation pipe 41 in the two sealing covers 4, and a sound absorbing layer 43 is provided on the inner side walls of the two sealing covers 4;

it should be noted that: in this way, when the noise is removed from the intake air and the exhaust air, the noise of the whole unit is removed from the mechanical noise, the combustion noise, the cooling fan, the exhaust air noise and the generator noise in the interior by using the punching noise-reducing plates 42 and the sound-absorbing layer 43 of the sealing cover 4.

Whereas in the present embodiment: the sound absorbing layer 43 is a flame retardant perforated sound absorbing panel.

In the embodiment of the present invention, referring to fig. 1, 3 and 6, the electric rotating mechanism 7 comprises a resonance sphere 71 and a supporting seat 77, a resonance cavity 701 is arranged in the resonance sphere 71, a sound collecting cover 72 communicated with the resonance cavity 701 is embedded at the bottom end of the resonance sphere 71, a resonance tube 73 is embedded at the top end of the resonance sphere 71, the resonance tube 73 is fixedly connected with a suspension plate 6, a sealing diaphragm 74 is installed in an inner cavity where the resonance tube 73 is communicated with the resonance cavity 701, a connecting rod 75 is installed at the top end of the sealing diaphragm 74, a connecting seat 751 is welded at one end of the connecting rod 75, a transmission rod 76 is hinged on the connecting seat 751, the supporting seat 77 is installed on the suspension plate 6 and is located at one side of the resonance tube 73, a transmission disc 78 is rotatably installed on the supporting seat 77 through a bearing, a micro-generator 79 is installed at one side of the transmission disc 78, a connecting column 781 is hinged with one end of the transmission rod 76 facing the edge of the transmission rod 78, a transmission shaft 782 is fixedly connected with a coaxial coupling of the micro-generator 782 through the bearing;

the drive shaft 782 is coaxially disposed with the drive disk 78.

It should be noted that: when the acoustic-to-electric mechanism 7 is used, noise in the acoustic-to-electric mechanism is collected into the resonance cavity 701 of the resonance sphere 71 through the sound collecting cover 72, then gas vibrates in the resonance tube 73 to form an air spring to impact the sealing diaphragm 74, thereby driving the connecting rod 75 to move up and down along with the audio vibration of the noise, when moving, the connecting rod 75 drives the driving disc 78 to rotate on the supporting seat 77 through the driving rod 76, and when rotating, the driving disc 78 drives the driving shaft of the micro-generator 79 to rotate through the driving shaft 782, so that the micro-generator 79 is driven to start power generation, and the electric energy generated by a plurality of acoustic-to-electric mechanisms 7 is collected together by utilizing the rectifier in the prior art, and then is led out to be stored or run, so that the noise of the unit is reasonably utilized, and the whole noise elimination is more energy-saving and environment-friendly.

In the embodiment of the present invention, referring to fig. 1, 2 and 7, two opposite sealing covers 4 are provided with T-shaped limiting grooves 401 at the ends close to each other, wherein a limiting mechanism 8 for locking the two sealing covers 4 is mounted at the top end of one sealing cover 4, and the limiting mechanism 8 is in plug-in fit with the T-shaped limiting grooves 401;

the limiting mechanism 8 comprises guide rods 81, the two guide rods 81 are symmetrically arranged on the upper surface of the sealing cover 4, a supporting plate 82 is fixedly arranged at the top ends of the two guide rods 81, an electric telescopic rod 83 is arranged at the bottom of the supporting plate 82, the telescopic end of the electric telescopic rod 83 faces downwards, a limiting plate 84 is fixedly arranged, I-shaped blocks 85 are arranged at two ends of the limiting plate 84, the I-shaped blocks 85 are in plug-in fit with T-shaped limiting grooves 401, and sliding holes in sliding fit with the two guide rods 81 are formed in the limiting plate 84.

It should be noted that: when the split sealing cover 4 is pulled to slide in the sliding groove 301 to be closed, and the whole excitation generator set main body 2 is closed, sealed and isolated, the electric telescopic rod 83 is controlled to drive the limiting plate 84 to move along the guide rod 81, so that the I-shaped blocks 85 on two sides are driven to be inserted into the T-shaped limiting grooves 401 formed in the split sealing cover 4, the split sealing cover 4 is tightly closed together, and when the split sealing cover is opened, only the electric telescopic rod 83 is controlled to be contracted.

The working principle of the noise reduction type excitation generator set provided by the invention is as follows:

when the excitation generator set main body 2 works, the split sealing cover 4 is closed, the whole excitation generator set main body 2 is closed and covered, when the power machine such as a diesel engine is started by oil inlet, the noise of the air inlet and the air outlet is eliminated through the noise elimination mechanism 5 when the air inlet end and the air outlet end are in exhaust, air enters the noise elimination sleeve 52 from the air guide hole 501 of the air guide plate 53 during air inlet, then is subjected to noise elimination through the noise elimination elbow 56, so that the air entering the sealing cover 4 is subjected to noise elimination, so that the noise elimination is performed, the noise elimination elbow 56 is further wrapped by the punching noise elimination pipe 57, so that the overall noise elimination is performed, the exhaust is discharged from the air guide plate 53 during the exhaust, the noise elimination is performed at the exhaust position, so that the air inlet noise and the exhaust noise are solved, and the mechanical noise, the combustion noise, the cooling fan, the exhaust noise and the generator noise inside the sealing cover 4 are subjected to noise elimination, the punching noise-reducing plate 42 and the sound-absorbing layer 43 in the sealing cover 4 are utilized to absorb and reduce noise, then the sound-converting mechanism 7 is utilized to generate electricity by noise, when the sound-converting mechanism 7 is used, the noise in the interior is collected into the resonance cavity 701 of the resonance sphere 71 through the sound-collecting cover 72, then the air vibrates in the resonance tube 73 to form an air spring to impact the sealing diaphragm 74, so that the driving connecting rod 75 moves up and down along with the audio vibration of the noise, when the driving connecting rod 75 moves, the driving plate 78 is driven to rotate on the supporting seat 77 through the driving rod 76, when the driving plate 78 drives the driving shaft of the micro-generator 79 to rotate through the driving shaft 782, so as to drive the micro-generator 79 to start electricity generation, when the prior art rectifier is utilized, the electric energy generated by the sound-converting mechanism 7 is collected in a concentrated manner, and then the noise of the unit is reasonably utilized, so that the whole noise elimination is more energy-saving and environment-friendly.

The circuits and control involved in the present invention are all of the prior art, and are not described in detail herein.

The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present invention.

Claims

1. A noise-reducing excitation generator set, comprising:

the excitation generator comprises a base (1) and an excitation generator set main body (2) arranged on the base (1);

characterized by further comprising:

the vibration isolation base (3) is arranged at the bottom of the base (1), sliding grooves (301) are symmetrically formed in two sides of the vibration isolation base (3), split sealing covers (4) are arranged on the sliding grooves (301), and ventilation pipes (41) are embedded at one ends, away from each other, of the two split sealing covers (4);

the silencing mechanism (5) is used for eliminating noise, the silencing mechanism (5) is embedded in the ventilation pipe (41), the silencing mechanism (5) comprises a connecting piece (51), a plurality of connecting pieces (51) are detachably arranged in a plurality of clamping grooves (402) formed in the inner side wall of the ventilation pipe (41), one ends of the connecting pieces (51) deviating from the ventilation pipe (41) are jointly connected with a silencing sleeve (52), an air deflector (53) is arranged at one end of the silencing sleeve (52), a plurality of air guide holes (501) are uniformly formed in the air deflector (53), and the air deflector (53), a plurality of silencing elbows (56) are communicated with the other end of the silencing sleeve (52), a punched silencing pipe (57) is sleeved at the same end of the silencing sleeve (52), and the punched silencing pipe (57) comprises the silencing elbows (56).

The suspension plate (6) is arranged at the top of the inner cavity of the sealing cover (4), and a plurality of sound-electricity conversion mechanisms (7) are embedded on the suspension plate (6) at equal intervals.

2. The noise reduction excitation generator set according to claim 1, wherein the connecting piece (51) comprises an external inserting strip (511), the external inserting strip (511) is inserted into the clamping groove (402), an external fixing piece (512) is installed at one end of the external inserting strip (511), the external fixing piece (512) is detachably connected with one end of the ventilation pipe (41) through a screw, a plurality of connecting springs (513) are uniformly installed at one end of the external inserting strip (511) deviating from the clamping groove (402), an internal inserting strip (514) inserted into the silencing sleeve (52) is commonly connected at one end of the external inserting strip (511), an internal fixing piece (515) is installed at one end of the internal fixing piece (515), and one end of the internal fixing piece (515) is detachably connected with one end of the silencing sleeve (52) through a screw.

3. The noise reduction excitation generator set according to claim 2, wherein the outer side wall of the silencing sleeve (52) is uniformly provided with a plurality of T-shaped grooves (502), and the T-shaped grooves (502) are in plug-in fit with the inner insertion strips (514).

4. The noise-reducing excitation generator set according to claim 1, wherein a noise-reducing grille (54) is provided in the ventilation pipe (41) between the air deflector (53) and the noise-reducing elbow (56), and a gap between an inner side wall of the ventilation pipe (41) and an outer side wall of the noise-reducing sleeve (52) is filled with sound-absorbing cotton (55).

5. The noise-reducing excitation generator set according to claim 1, wherein a plurality of punched sound-deadening plates (42) are installed on one side of the ventilation pipe (41) in the two seal covers (4), and sound-absorbing layers (43) are provided on the inner side walls of the two seal covers (4).

6. The noise-reducing excitation generator set of claim 5, wherein the sound absorbing layer (43) is a flame-retardant perforated sound absorbing panel.

7. The noise reduction excitation generator set according to claim 1, wherein the acoustic-electric mechanism (7) comprises a resonance sphere (71) and a supporting seat (77), a resonance cavity (701) is arranged in the resonance sphere (71), a sound collecting cover (72) communicated with the resonance cavity (701) is embedded at the bottom end of the resonance sphere (71), a resonance tube (73) is embedded at the top end of the resonance sphere (71), the resonance tube (73) is fixedly connected with a suspension plate (6), a sealing diaphragm (74) is arranged in an inner cavity communicated with the resonance cavity (701) of the resonance tube (73), a connecting rod (75) is arranged at the top end of the sealing diaphragm (74), a connecting seat (751) is welded at one end of the connecting rod (75) deviating from the sealing diaphragm (74), a transmission rod (76) is hinged on the connecting seat (751), the supporting seat (77) is arranged on the suspension plate (6) and is positioned at one side of the resonance tube (73), a transmission disc (78) is rotatably arranged on the supporting seat (77) through a bearing, a sealing diaphragm (74) is arranged in an inner cavity communicated with the suspension plate (6), a connecting rod (78) is arranged at one side of the transmission disc (78) facing the transmission rod (781), the connecting post (781) is hinged with one end of the transmission rod (76) deviating from the connecting seat (751), the other end of the transmission disc (78) is provided with a transmission shaft (782), and the transmission shaft (782) is fixedly connected with a driving shaft of the micro generator (79) coaxially through a coupler.

8. The noise-reducing excitation generator set of claim 7, wherein the drive shaft (782) is arranged coaxially with a drive disc (78).

9. The noise reduction excitation generator set according to claim 1, wherein the two split sealing covers (4) are provided with T-shaped limiting grooves (401) at one end close to each other, and a limiting mechanism (8) for locking the two sealing covers (4) is mounted at the top end of one sealing cover (4), and the limiting mechanism (8) is in plug-in fit with the T-shaped limiting grooves (401).

10. The noise reduction type excitation generator set according to claim 9, wherein the limiting mechanism (8) comprises guide rods (81), the two guide rods (81) are symmetrically installed on the upper surface of the sealing cover (4), supporting plates (82) are fixedly installed on the top ends of the two guide rods (81) together, electric telescopic rods (83) are installed at the bottoms of the supporting plates (82), telescopic ends of the electric telescopic rods (83) face downwards, limiting plates (84) are fixedly installed, I-shaped blocks (85) are installed at two ends of the limiting plates (84), the I-shaped blocks (85) are in plug-in fit with T-shaped limiting grooves (401), and sliding holes in sliding fit with the two guide rods (81) are formed in the limiting plates (84).