CN210799519U

CN210799519U - Noise reducer for generator

Info

Publication number: CN210799519U
Application number: CN201921133843.3U
Authority: CN
Inventors: 翁晁丹
Original assignee: Zhejiang Furuite Power Technology Co ltd
Current assignee: Zhejiang Furuite Power Technology Co ltd
Priority date: 2019-07-18
Filing date: 2019-07-18
Publication date: 2020-06-19
Anticipated expiration: 2029-07-18

Abstract

The utility model provides a generator noise reducer belongs to noise reduction equipment technical field. The shell is provided with an air inlet and an air outlet at two ends respectively, a built-in partition plate which is connected with the inner wall of the shell in a sealing mode is arranged in the shell, an air inlet pipe and an air outlet pipe which are located in the shell are arranged on two sides of the built-in partition plate respectively, the air inlet pipe and the air outlet pipe are communicated with the air inlet and the air outlet respectively, an air inlet partition part and an air outlet partition part are arranged on the outer wall of the air inlet pipe and the outer wall of the air outlet pipe respectively, the air inlet partition part and the air outlet partition part are connected with the inner wall of the shell in a sealing mode respectively, at least one connecting pipe is arranged on the built-in partition plate in a penetrating mode, one end. The utility model discloses have the effect of noise reduction or making an uproar falls.

Description

Noise reducer for generator

Technical Field

The utility model provides a generator noise reducer belongs to noise reduction equipment technical field.

Background

It is known that aerodynamic noise of a rotating electric machine is inevitable, and it is related to the peripheral speed of the rotor surface, the surface form, the aerodynamic performance of the fan and the shape of the protruding parts. The highest value of the frequency spectrum of the aerodynamic noise of a general non-salient pole type rotor alternating current synchronous generator is in the range of 800-4000 Hz, and the highest value of the noise frequency spectrum of a salient pole type alternating current synchronous generator is usually in the range of 100-800 Hz. Whistling noise is one type of aerodynamic noise, primarily due to the fan rubbing against the air flow with equidistant blades, or the air flow being evenly divided by the rotor components, e.g. the radial air channels opposite the stator and rotor of the motor actually constitute an alarm. The whistle noise is increased as the gap between the rotating part and the fixed part is reduced. The clearance is increased, and the fan blades with unequal distances are an effective method for reducing whistling noise.

However, since the structure of the generator itself is modified so that the noise generated by the generator cannot be reduced to a level that does not generate noise pollution, it is necessary to collect the air having noise generated inside the generator by an auxiliary noise reduction device and reduce the noise of the generator to a level that does not generate noise pollution by using the noise reduction function of the noise reduction device. At present, the development of noise reduction equipment with excellent noise reduction effect, convenience for large-scale production and moderate cost is urgently needed to meet the requirements of various fields.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the above-mentioned problem, a ware of making an uproar falls in generator is provided.

In order to achieve the above purpose, the utility model adopts the following technical proposal:

the utility model provides a generator noise reducer, includes the shell, and this shell both ends are equipped with air inlet and gas outlet respectively, are equipped with a built-in baffle rather than inner wall sealing connection in the shell, and the both sides of built-in baffle are equipped with an intake pipe and outlet duct that are located the shell respectively, and intake pipe and outlet duct communicate air inlet and gas outlet respectively, and the outer wall of intake pipe and outlet duct is equipped with respectively admittedly to cut off the portion and gives vent to anger to cut off the portion, admit air to cut off the portion and give vent to anger to cut off the portion respectively with shell inner wall sealing connection, wear to be equipped with an at least connecting pipe on the built-in baffle, the one end of connecting pipe is located admittedly cuts off between portion and the built-in.

In the generator noise reducer, the air inlet pipe and the air outlet pipe are respectively provided with an air inlet shunting hole and an air outlet shunting hole, the air inlet pipe and the air outlet pipe are respectively communicated with the connecting pipe through the air inlet shunting hole and the air outlet shunting hole, and the connecting pipe is fixedly connected with the built-in partition plate in a sealing manner.

In the noise reducer for the generator, the air inlet shunting holes and the air outlet shunting holes are respectively air inlet shunting openings and air outlet shunting openings which are formed in the air inlet pipe and the air outlet pipe, and the connecting pipes are at least two and are uniformly arranged along the circumferential direction of the built-in partition plate at intervals.

In the above noise reducer for a generator, preferably, the air inlet shunt opening is located between one end of the connecting pipe and the internal partition plate, and the air outlet shunt opening is located between the other end of the connecting pipe and the internal partition plate.

In the noise reducer for the generator, two end parts of different connecting pipes are preferably flush with each other, the cross sections of the air inlet pipe and the air outlet pipe are the same in shape and size, the air inlet shunting opening is located at one end, close to the built-in partition plate, of the air inlet pipe, and the air outlet shunting opening is located at one end, close to the built-in partition plate, of the air outlet pipe.

In the above-mentioned noise reducer for a generator, preferably, one end of the connecting pipe extends from the built-in partition plate to the middle of the air inlet pipe in the direction of the air inlet partition part, and the other end of the connecting pipe extends from the built-in partition plate to the middle of the air outlet pipe in the direction of the air outlet partition part.

In the noise reducer of the generator, the axial leads of the air inlet pipe, the air outlet pipe and the built-in partition plate are overlapped, the axial lead of the connecting pipe is parallel to the axial lead of the built-in partition plate, and the outer wall of the connecting pipe is fixedly connected with the inner wall of the shell.

In the above noise reducer for a generator, preferably, the outer walls of the two ends of the connecting pipe are respectively provided with a connecting block fixedly connected with the inner wall of the housing.

In the above noise reducer for a generator, preferably, the air inlet partition part and the air outlet partition part are plate-shaped structures matched with the cross section of the housing, the air inlet partition part, the air outlet partition part and the built-in partition plate are parallel to each other, and the plane where the built-in partition plate is located is perpendicular to the axial lead of the housing.

In the above-mentioned noise reducer for a generator, preferably, the housing includes a cylindrical housing having an air inlet and an air outlet, the two ends of the housing are respectively provided with a front sealing plate and a rear sealing plate, the air inlet is located between the front sealing plate and the air inlet partition portion, the air outlet is located between the rear sealing plate and the air outlet partition portion, the two ends of the bottom of the housing are respectively provided with a mounting seat, and the air inlet and the air outlet are respectively connected with a flange tube and a flange tube.

Compared with the prior art, the utility model has the advantages of:

1. the utility model discloses a noise reducer passes through connecting pipe intercommunication intake pipe and outlet duct, can change the direction of operation by generator spun noise gas several times to prolong the stroke of its operation, make its operation by tending steadily rapidly, thereby reduce or eliminated the noise, the noise reduction is effectual.

2. The utility model discloses a noise reducer simple structure especially coincides or parallel arrangement at each part axial lead, and the production and processing of being convenient for can the large-scale production.

3. The utility model discloses a noise reducer does not need special expensive part, and low in production cost does benefit to the marketing and uses.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an exploded view of the present invention.

In the figure: the air inlet flange 1, the front sealing plate 2, the shell 3, the mounting seat 4, the air inlet partition part 5, the air inlet pipe 6, the connecting pipe 7, the built-in partition plate 8, the air outlet pipe 9, the air outlet flange 10, the air outlet partition part 11, the rear sealing plate 12, the shell 13, the connecting block 14, the air inlet A1, the air inlet pipe inlet A2, the connecting pipe inlet A3, the air inlet shunting notch A4, the connecting pipe inlet A5, the air outlet shunting notch A6, the connecting pipe outlet A7 and the air outlet A8.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

As shown in fig. 1 and 2, the generator noise reducer comprises a housing 13, two ends of which are respectively provided with an air inlet a1 and an air outlet A8, a built-in partition plate 8 which is connected with the inner wall of the housing 13 in a sealing manner is arranged in the housing 13, two sides of the built-in partition plate 8 are respectively provided with an air inlet pipe 6 and an air outlet pipe 9 which are positioned in the housing 13, the air inlet pipe 6 and the air outlet pipe 9 are respectively communicated with an air inlet a1 and an air outlet A8, the outer walls of the air inlet pipe 6 and the air outlet pipe 9 are respectively provided with an air inlet partition part 5 and an air outlet partition part 11, the air inlet partition part 5 and the air outlet partition part 11 are respectively connected with the inner wall of the housing 13 in a sealing manner, at least one connecting pipe 7 penetrates through the built-in partition plate 8, one end of the connecting pipe 7 is positioned between the air.

Therefore, the gas led out from the generator can be led into the noise reducer through the gas inlet A1, then enters the gas inlet pipe through the gas inlet pipe 6 communicated with the gas inlet A1, then enters the connecting pipe through the connecting pipe 7 communicated with the gas inlet pipe 6, then enters the gas outlet pipe 9 communicated with the connecting pipe 7, and finally is led out of the noise reducer through the gas outlet A8 communicated with the gas outlet pipe 9. When the gas passes through the generator noise reducer, the moving direction of the gas led out by the generator can be changed for a plurality of times, the running stroke of the gas is prolonged, and the gas led out by the generator and running rapidly gradually runs stably through the change of the running direction, so that the noise is greatly eliminated, and the noise reducing effect is achieved.

In order to better play the purpose of diversion and change the gas flow direction, the gas inlet pipe 6 and the gas outlet pipe 9 are respectively provided with a gas inlet diversion hole and a gas outlet diversion hole, the gas inlet pipe 6 and the gas outlet pipe 9 are respectively communicated with a connecting pipe 7 through the gas inlet diversion hole and the gas outlet diversion hole, and the connecting pipe 7 is fixedly connected with a built-in clapboard 8 in a sealing way.

The air inlet shunting hole and the air outlet shunting hole are respectively an air inlet shunting opening A4 and an air outlet shunting opening A6 which are arranged on the air inlet pipe 6 and the air outlet pipe 9, the air inlet shunting opening A4 and the air outlet shunting opening A6 can be one or more, and the air inlet shunting hole and the air outlet shunting hole can be properly adjusted according to the actual shunting effect.

In order to improve the noise reduction processing capacity, the connecting pipe 7 has at least two and along the even setting of the circumference interval of built-in baffle 8, and the connecting pipe is three in fig. 1 and 2, but this is the utility model discloses an example is not to the restriction of connecting pipe number, and the number of connecting pipe can be suitably adjusted according to demands such as processing capacity.

In order to change the gas moving direction to a large extent and prolong the gas return stroke as much as possible, preferably, the gas inlet flow dividing notch a4 should be located between one end of the connecting pipe 7 and the built-in partition plate 8, and the gas outlet flow dividing notch a6 should be located between the other end of the connecting pipe 7 and the built-in partition plate 8. More preferably, the inlet diversion slit a4 is located at one end of the inlet pipe 6 close to the built-in partition plate 8, and the outlet diversion slit a6 is located at one end of the outlet pipe 9 close to the built-in partition plate 8. One end of the connecting pipe 7 extends from the built-in partition plate 8 to the middle of the air inlet partition part 5 and extends through the middle of the air inlet pipe 6, and the other end of the connecting pipe 7 extends from the built-in partition plate 8 to the middle of the air outlet partition part 11 and extends through the middle of the air outlet pipe 9.

In order to facilitate the installation of the components of the noise damper, when the number of the connection pipes 7 is two or more, it is preferable that the two ends of the different connection pipes 7 are flush with each other; more preferably, the axial lines of the air inlet pipe 6, the air outlet pipe 9 and the built-in partition plate 8 are overlapped, and the axial line of the connecting pipe 7 is parallel to the axial line of the built-in partition plate 8. More preferably, the air inlet partition part 5, the air outlet partition part 11 and the built-in partition plate 8 are parallel to each other, and the plane where the built-in partition plate 8 is located is perpendicular to the axis of the shell 13.

In order to achieve better fixation of the connection pipe 7, it is preferable that the outer wall of the connection pipe 7 is fixedly connected with the inner wall of the housing 13. Meanwhile, for better fixing connection, the outer walls of the two ends of the connecting pipe 7 are respectively provided with a connecting block 14 fixedly connected with the inner wall of the housing 13.

For convenience of assembly processing, the cross sections of the air inlet pipe 6 and the air outlet pipe 9 are preferably the same in shape and size; the preferred air inlet partition 5 and air outlet partition 11 are designed into plate-shaped structures matched with the cross section of the shell 13; the preferred housing 13 is designed to include a cylindrical housing 3 having an air inlet a1 and an air outlet A8, the housing having a front sealing plate 2 and a rear sealing plate 12 at opposite ends thereof, the air inlet a1 being located between the front sealing plate 2 and the air inlet blocking portion 5, and the air outlet A8 being located between the rear sealing plate 12 and the air outlet blocking portion 11.

In order to facilitate the installation and fixation of the device, the bottom of the housing 3 is preferably provided with a mounting seat 4 at each end. Of course, the number and the installation position of the bases can be properly adjusted according to needs, and a plurality of installation bases can be added in the middle.

To facilitate the introduction and discharge of the gas, it is preferable that the inlet port a1 and the outlet port A8 of the housing 3 are connected to a

flange pipe

1 and 10, respectively.

Each part of the generator noise reducer can be processed by adopting a metal material or a rubber plastic material (especially engineering plastic), and can be selected according to the processability of the material and the strength requirement on airflow impact resistance. The welding between each part can be accomplished through the welding, also can realize through adding sealing element such as sealing washer.

The utility model discloses a theory of operation is: the air inlet A1 of the generator noise reducer is connected with the air outlet of the noise source generating equipment, noise gas enters a first shell cavity of the noise reducer, which is composed of a front sealing plate 2, a shell 3 and an air inlet partition part 5, enters an inner cavity of an air inlet pipe 6 through an air inlet pipe inlet A2, and then flows into a first shunting cavity which is composed of the shell 3, the air inlet partition part 5, a built-in partition plate 8 and the outer wall of the air inlet pipe 6 through an air inlet shunting notch A4 on the air inlet pipe 6, then enters a connecting pipe through a connecting pipe inlet A3, and is guided into a second shunting cavity which is composed of the shell 3, an air outlet partition part 11, the built-in partition plate 8 and the outer wall of the air outlet pipe 9 through an air outlet shunting notch A6 on the air outlet pipe 9, and then is guided into an inner cavity of the air outlet pipe 9 through an air outlet pipe outlet A7 of the air outlet pipe 9, wherein the air is guided into a second, And a second shell cavity formed by the shell 3 and the air outlet partition part 11, wherein the air is subjected to noise reduction treatment, and finally the noise-reduced air is discharged from the equipment through an air outlet A8 of the generator noise reducer.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims. If simply connect the noise reducer of the present invention in series or in parallel, or connect the components in the noise reducer housing of the present invention in series or in parallel, the simple combination of the present invention is not deviated from the spirit of the present invention, and the scope of the present invention is not exceeded by the scope of the appended claims.

Although terms such as the air inlet flange 1, the front sealing plate 2, the housing 3, the mounting seat 4, the air inlet partition 5, the air inlet pipe 6, the connecting pipe 7, the internal partition 8, the air outlet pipe 9, the air outlet flange 10, the air outlet partition 11, the rear sealing plate 12, the housing 13, the connecting block 14, the air inlet a1, the air inlet pipe inlet a2, the connecting pipe inlet A3, the air inlet flow dividing notch a4, the connecting pipe inlet a5, the air outlet flow dividing notch a6, the connecting pipe outlet a7 and the air outlet A8 are used more frequently, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention and should not be interpreted as imposing any additional limitations that are contrary to the spirit of the present invention.

Claims

1. A generator noise reducer comprises a shell (13), wherein an air inlet (A1) and an air outlet (A8) are respectively arranged at two ends of the shell (13), and the generator noise reducer is characterized in that a built-in partition plate (8) hermetically connected with the inner wall of the shell (13) is arranged in the shell (13), an air inlet pipe (6) and an air outlet pipe (9) which are positioned in the shell (13) are respectively arranged at two sides of the built-in partition plate (8), the air inlet pipe (6) and the air outlet pipe (9) are respectively communicated with the air inlet (A1) and the air outlet (A8), an air inlet partition part (5) and an air outlet partition part (11) are respectively arranged on the outer walls of the air inlet pipe (6) and the air outlet pipe (9), the air inlet partition part (5) and the air outlet partition part (11) are respectively hermetically connected with the inner wall of the shell (13), at least one connecting pipe (7) penetrates through the built-in partition plate (8), one end of the, the other end is positioned between the air outlet partition part (11) and the built-in clapboard (8), and the two ends of the connecting pipe (7) are respectively communicated with the air inlet pipe (6) and the air outlet pipe (9).

2. The generator noise reducer according to claim 1, wherein the inlet pipe (6) and the outlet pipe (9) are respectively provided with an inlet branch hole and an outlet branch hole, the inlet pipe (6) and the outlet pipe (9) are respectively communicated with the connecting pipe (7) through the inlet branch hole and the outlet branch hole, and the connecting pipe (7) is fixedly connected with the built-in partition plate (8) in a sealing manner.

3. The generator noise reducer according to claim 2, wherein the inlet and outlet branch holes are inlet branch openings (a4) and outlet branch openings (a6) formed in the inlet pipe (6) and the outlet pipe (9), respectively, and the at least two connecting pipes (7) are uniformly spaced along the circumferential direction of the internal partition plate (8).

4. Generator noise damper according to claim 3, characterised in that the inlet flow diversion slit (A4) is located between one of the ends of the connecting pipe (7) and the internal partition (8), and the outlet flow diversion slit (A6) is located between the other end of the connecting pipe (7) and the internal partition (8).

5. Generator noise reducer according to claim 4, characterised in that the two ends of the different connecting pipes (7) are flush with each other, the inlet pipe (6) and the outlet pipe (9) have the same cross-sectional shape and size, the inlet diversion slit (A4) is located at the end of the inlet pipe (6) close to the internal baffle (8), and the outlet diversion slit (A6) is located at the end of the outlet pipe (9) close to the internal baffle (8).

6. Generator noise damper according to claim 4, wherein one end of the connecting pipe (7) extends from the built-in partition (8) towards the inlet partition (5) over the middle of the inlet pipe (6), and the other end of the connecting pipe (7) extends from the built-in partition (8) towards the outlet partition (11) over the middle of the outlet pipe (9).

7. The generator noise reducer according to claim 1, wherein the axes of the air inlet pipe (6), the air outlet pipe (9) and the built-in partition plate (8) are coincident, the axis of the connecting pipe (7) is parallel to the axis of the built-in partition plate (8), and the outer wall of the connecting pipe (7) is fixedly connected with the inner wall of the shell (13).

8. Generator noise reducer according to claim 7, characterized in that the outer walls of the two ends of the connecting pipe (7) are respectively provided with a connecting block (14) fixedly connected with the inner wall of the housing (13).

9. The generator noise reducer according to claim 1, wherein the air inlet partition (5) and the air outlet partition (11) are plate-shaped structures matched with the cross section of the housing (13), the air inlet partition (5), the air outlet partition (11) and the built-in partition (8) are parallel to each other, and the plane of the built-in partition (8) is perpendicular to the axial line of the housing (13).

10. The generator noise reducer according to claim 1, wherein the housing (13) comprises a cylindrical housing (3) having an air inlet (a1) and an air outlet (A8), the housing has a front sealing plate (2) and a rear sealing plate (12) at its two ends, the air inlet (a1) is located between the front sealing plate (2) and the air inlet partition (5), the air outlet (A8) is located between the rear sealing plate (12) and the air outlet partition (11), the housing (3) has a mounting seat (4) at each of its two ends at its bottom, and the air inlet (a1) and the air outlet (A8) are connected to a flange pipe (1) and a flange pipe (10), respectively.