CN113685273A

CN113685273A - Sound insulation device of gas turbine

Info

Publication number: CN113685273A
Application number: CN202111089422.7A
Authority: CN
Inventors: 陈华; 代辉; 邓超
Original assignee: Sichuan Cuntian Machinery Manufacturing Co ltd
Current assignee: Sichuan Cuntian Machinery Manufacturing Co ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2021-11-23
Anticipated expiration: 2041-09-16
Also published as: CN113685273B

Abstract

The invention discloses a sound insulation device of a gas turbine, which comprises a sound insulation cover body, wherein the sound insulation cover body is of a frame structure formed by overlapping a plurality of cross beams and vertical beams which are arranged in a crossed manner, and a plurality of silencing plates are embedded on the periphery and the top surface of the frame structure to form a cavity; the silencing plate comprises a supporting plate, a silencing layer and a porous plate from outside to inside in sequence, wherein the silencing layer is clamped between the supporting plate and the porous plate, the supporting plate is connected with the porous plate, and the porous plate faces the inner side of the cavity; the gas turbine main engine is arranged in the sound-proof housing. The sound insulation device of the gas turbine adopts a frame structure, is embedded with the silencing plate, is convenient to install, and has high structural strength, good sound insulation effect and wide application range.

Description

Sound insulation device of gas turbine

Technical Field

The invention relates to the technical field of gas turbines, in particular to a sound insulation device of a gas turbine.

Background

The gas turbine is an internal combustion type power machine which takes continuously flowing gas as a working medium to drive an impeller to rotate at a high speed and converts the energy of fuel into useful work, and is a rotary impeller type heat engine. Gas turbines are increasingly used as high efficiency internal combustion engines. However, the noise of the gas turbine is very loud during working, and the noise not only affects the physical and mental health of workers, but also interferes with the testing of some instruments, so that the large power equipment such as the gas turbine and the like often needs to be subjected to sound insulation treatment.

The existing sound insulation device has a plurality of defects, for example, the sound insulation device is not highly universal due to the matching design with an air inlet channel and an air inlet of a gas turbine; only part of the wall body of the sound insulation device is made of sound attenuation plates, so that the sound attenuation effect is poor; the air in the cavity of the sound insulation device flows insufficiently, so that the inside of the cavity is in a high-temperature state for a long time, and workers are inconvenient to enter a detection working state.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides the sound insulation device of the gas turbine, which has the advantages of strong universality, good sound insulation and noise reduction effects and good ventilation.

In order to achieve the technical purpose, the invention adopts the technical scheme that:

a sound insulation device of a gas turbine comprises a sound insulation cover body, wherein the sound insulation cover body is of a frame structure formed by overlapping a plurality of cross beams and vertical beams which are arranged in a crossed mode, and a plurality of silencing plates are embedded on the periphery and the top surface of the frame structure to form a cavity; the silencing plate comprises a supporting plate, a silencing layer and a porous plate from outside to inside in sequence, wherein the silencing layer is clamped between the supporting plate and the porous plate, the supporting plate is connected with the porous plate, and the porous plate faces the inner side of the cavity; the gas turbine main engine is arranged in the sound-proof housing.

Furthermore, the sound-proof shield body is distributed along the axial direction of the gas turbine, a first end face, a first side wall, a second side wall and a first top wall which are positioned on one side of an air inlet of the gas turbine are air inlet walls, and a shaft hole of the gas turbine is formed in the middle of the first end face and used for a shaft of the gas turbine to penetrate through; the side wall III, the side wall IV, the end face II and the top wall II of the sound-proof shield body, which are positioned on one side of an exhaust port of the gas turbine, are exhaust walls, and the middle position of the end face II is provided with a hole II matched with the profile of the gas turbine; the gas turbine engine gas.

Furthermore, an indoor air inlet I is arranged at the left upper position of the first end face, and an indoor air inlet II is arranged at the upper position of the second side wall; an exhaust pipeline connecting port is formed in the position, close to the partition wall, of the top wall and is used for being connected with an exhaust pipeline.

Furthermore, an indoor air inlet III is formed below the position, close to the partition wall, of the side wall III, and an indoor air inlet IV is formed below the position, close to the partition wall, of the side wall IV; and at least one fan connecting port is arranged on the second top wall close to the baffle wall and is used for connecting a fan.

Furthermore, 2 fan connectors are arranged on the second top wall close to the partition wall in parallel along the axial direction of the gas turbine.

Preferably, the first indoor air inlet and the second indoor air inlet are provided with louver type noise reduction sheets.

Preferably, silencers are respectively arranged at the third indoor air inlet and the fourth indoor air inlet.

Further, the first top wall and the second top wall are conical, the radial middle position of the first top wall and the radial middle position of the second top wall are highest, and the two sides of the first top wall and the two sides of the second top wall incline downwards by 2-8 degrees.

Furthermore, at least one access door is arranged below each of the air inlet wall and the exhaust wall.

Furthermore, the cross beam and the vertical beam are of steel structures, adopt H-shaped steel and are fixedly connected with each other through a flange group and a bolt.

Compared with the prior art, the invention has the beneficial effects that:

1) the sound insulation device of the gas turbine adopts a frame structure, is embedded with the silencing plate, is convenient to install, and has high structural strength, good sound insulation effect and wide application range.

2) According to the sound insulation device of the gas turbine, the cavity in the sound insulation cover body is divided into two parts by arranging the partition walls, and the air flow channels are respectively designed, so that the air flow is promoted, the high-temperature gas in the sound insulation cover body can be rapidly discharged, and the working environment temperature of the gas turbine is reduced.

3) According to the sound insulation device of the gas turbine, the silencing sheets/silencers are arranged at the air inlet of the indoor air, so that the wind noise generated by air flow is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 is a schematic perspective view of an embodiment of the present invention;

FIG. 2 is a partial structural view of a second viewing angle according to an embodiment of the present invention;

FIG. 3 is a schematic view of a part of the structure of an air inlet wall in the embodiment of the present invention;

FIG. 4 is a schematic view of a part of the exhaust wall according to the embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a sound damping sheet according to an embodiment of the present invention;

reference numerals: 10-beam, 20-vertical beam, 30-oblique beam, 100-silencing plate, 101-support plate, 102-silencing layer, 103-porous plate, 11-end face I, 12-side wall I, 13-side wall II, 14-top wall I, 21-side wall III, 22-side wall IV, 23-end face II, 24-top wall II, 31-baffle wall, 41-indoor air inlet I, 42-indoor air inlet II, 43-exhaust pipeline connector, 44-indoor air inlet III, 45-indoor air inlet IV, 46-fan connector, 47-silencing sheet, 48-silencer and 51-access door.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

A noise insulation device of a gas turbine comprises a noise insulation cover body, wherein the noise insulation cover body is of a frame structure formed by overlapping a plurality of cross beams 10 and vertical beams 20 which are arranged in a cross mode, and is appropriately assisted with an oblique beam 30, and a plurality of silencing plates 100 are embedded on the periphery and the top surface of the frame structure to form a cavity; the cross beam 10, the vertical beam 20 and the oblique beam 30 are of steel structures, adopt H-shaped steel and are fixedly connected with each other through flange groups and bolts; the sound attenuation plate 00 sequentially comprises a supporting plate 101, a sound attenuation layer 102 and a porous plate 103 from outside to inside, the sound attenuation layer 102 is clamped between the supporting plate 101 and the porous plate 103, the supporting plate 101 is connected with the porous plate 103, the sound attenuation layer 102 is rock wool, and the porous plate 103 faces the inner side of the cavity; the gas turbine host computer is arranged in the sound-proof housing, gas turbine during operation, noise gets into the amortization panel from the aperture of porous plate inside, is filled the rock wool absorption wherein to the noise decibel is reduced.

Specifically, the sound-proof shield body is arranged along the axial direction of the gas turbine, an end face I11, a side wall I12, a side wall II 13 and a top wall I14 which are positioned on one side of an air inlet of the gas turbine are air inlet walls, and a gas turbine shaft hole is formed in the middle of the end face I11 and used for a gas turbine shaft to pass through; the side wall III 21, the side wall IV 22, the end face II 23 and the top wall II 24 of the soundproof shade body, which are positioned on one side of the exhaust port of the gas turbine, are exhaust walls, and the middle position of the end face II 23 is provided with a hole II matched with the profile of the gas turbine; still include and separate the wall 31, separate wall 31 and radially lay along the gas turbine, be located the inside middle part position of cavity, separate wall 31 middle part position and offer the through-hole of gas turbine profile adaptation, separate wall 31 will the cavity divide into two cavitys of combustion chamber and exhaust chamber, corresponds gas turbine's combustion chamber and exhaust chamber respectively.

An indoor air inlet I41 is arranged at the left upper position of the end face I11, and an indoor air inlet II 42 is arranged at the upper position of the side wall II 13; an exhaust pipeline connecting port 43 is formed in the position, close to the partition wall 31, of the first top wall 14 and used for being connected with an exhaust pipeline, fresh air enters the combustion cavity from the first end face 11 close to the combustion cavity and is exhausted from the exhaust pipeline on the first top wall 14 far away from the first end face 11, the first air inlet and the second air inlet are arranged diagonally to the exhaust pipeline, indoor air flowing is facilitated, the ventilation effect is enhanced, and high-temperature gas in the combustion chamber is discharged.

An indoor air inlet III 44 is arranged below the position, close to the partition wall 31, of the side wall III 21, and an indoor air inlet IV 45 is arranged below the position, close to the partition wall 31, of the side wall IV 22; at least one fan connecting port 46 is arranged on the second top wall 24 close to the baffle wall 31, preferably, 2 fan connecting ports are arranged in parallel along the axial direction of the gas turbine and are used for connecting fans, and the fans forcibly discharge high-temperature gas in the exhaust chamber; fresh air enters the exhaust chamber from the indoor air inlets III and IV close to the ground, high-temperature gas is forcibly exhausted through the top wall fan, and the indoor air inlets III and IV and the fan port are close to the high-temperature source of the gas turbine, so that the high-temperature gas in the exhaust chamber can be exhausted quickly, and the working environment temperature of the gas turbine is reduced.

Further, louver type noise reduction plates 47 are arranged at the first indoor air inlet 41 and the second indoor air inlet 42, silencers 48 are arranged at the third indoor air inlet 44 and the fourth indoor air inlet 45 respectively, indoor air in the combustion chamber and the exhaust chamber flows rapidly to generate wind noise, and the noise reduction plates 47 and the silencers 48 are helpful for reducing the wind noise generated by the flowing indoor air.

The first top wall 14 and the second top wall 24 are conical, the radial middle position of the gas turbine is the highest, and the two sides of the gas turbine are inclined downwards by 2-8 degrees and are matched with the rain-proof shed.

At least one access door 51 is arranged below the air inlet wall and the exhaust wall respectively, so that workers can conveniently go in and out for installation, overhaul, cleaning and the like.

The air inlet wall is further provided with an equipment interface, a cable interface and the like, the exhaust wall is further provided with an electric connection box maintenance door, an equipment interface, a cable interface and the like, an electric control line box is correspondingly arranged in the electric connection box maintenance door and is close to the gas turbine, and the cable interface is arranged on the partition wall.

The present invention is capable of other embodiments, and various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a gas turbine's noise insulation, includes the sound-proof housing body, its characterized in that: the soundproof shade body is of a frame structure formed by a plurality of cross beams (10) and vertical beams (20), and a plurality of silencing plates (100) are embedded around and on the top surface of the frame structure to form a cavity; the silencing plate (00) sequentially comprises a supporting plate (101), a silencing layer (102) and a porous plate (103) from outside to inside, the silencing layer (102) is clamped between the supporting plate (101) and the porous plate (103), the supporting plate (101) is connected with the porous plate (103), and the porous plate (103) faces the inner side of the cavity; the gas turbine main engine is arranged in the sound-proof housing.

2. A gas turbine engine sound insulation according to claim 1, wherein: the soundproof cover body is arranged along the axial direction of the gas turbine, a first end face (11), a first side wall (12), a second side wall (13) and a first top wall (14) which are positioned on one side of an air inlet of the gas turbine are air inlet walls, and a gas turbine shaft hole is formed in the middle of the first end face (11) and used for a gas turbine shaft to pass through; the side wall III (21), the side wall IV (22), the end face II (23) and the top wall II (24) of the soundproof shade body, which are positioned on one side of the exhaust port of the gas turbine, are exhaust walls, and the middle position of the end face II (23) is provided with a hole II matched with the profile of the gas turbine; still include and separate wall (31), it lays along the radial of combustion engine turbine to separate wall (31), is located the inside middle part position of cavity, separate wall (31) middle part position and offer the through-hole of gas turbine profile adaptation, separate wall (31) will the cavity divide into two cavities of combustion chamber and exhaust chamber, corresponds gas turbine's combustion chamber and exhaust chamber respectively.

3. A gas turbine engine sound insulator according to claim 2, wherein: an indoor air inlet I (41) is arranged at the left upper position of the end surface I (11), and an indoor air inlet II (42) is arranged at the upper position of the side wall II (13); an exhaust pipeline connecting port (43) is formed in the position, close to the partition wall (31), of the first top wall (14) and used for being connected with an exhaust pipeline.

4. A gas turbine engine sound insulator according to claim 2, wherein: an indoor air inlet III (44) is arranged below the position, close to the partition wall (31), of the side wall III (21), and an indoor air inlet IV (45) is arranged below the position, close to the partition wall (31), of the side wall IV (23); and at least one fan connecting port (46) is arranged on the second top wall (24) close to the partition wall (31) and is used for connecting a fan.

5. The sound insulating device for a gas turbine according to claim 4, wherein: and (2) fan connecting ports (46) are arranged in parallel on the second top wall (24) close to the partition wall (31) along the axial direction of the gas turbine.

6. A gas turbine engine sound insulator according to claim 3, wherein: shutter type noise reduction sheets (47) are arranged at the first indoor air inlet (41) and the second indoor air inlet (42).

7. The sound insulating device for a gas turbine according to claim 4, wherein: and silencers (48) are respectively arranged at the indoor air inlet three (44) and the indoor air inlet four (45).

8. A gas turbine engine sound insulator according to claim 2, wherein: the first top wall (14) and the second top wall (24) are conical, the radial middle position of the first top wall and the radial middle position of the second top wall are highest, and the two sides of the first top wall and the two sides of the second top wall incline downwards by 2-8 degrees.

9. A gas turbine engine sound insulator according to claim 2, wherein: at least one access door (51) is arranged below each of the air inlet wall and the exhaust wall.

10. A gas turbine engine sound insulation according to claim 1, wherein: the cross beam (10), the vertical beam (20) and the oblique beam (30) are of steel structures, adopt H-shaped steel and are fixedly connected with each other through flange groups and bolts.