CN215804847U

CN215804847U - Air inlet wall structure of gas turbine sound-proof housing

Info

Publication number: CN215804847U
Application number: CN202122249979.4U
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: 2022-02-11
Anticipated expiration: 2031-09-16

Abstract

The utility model discloses an air inlet wall structure of a gas turbine sound-proof cover, wherein the air inlet wall is arranged along the axial direction of a gas turbine and comprises an end surface positioned on one side of an air inlet of the gas turbine, and the middle part of the end surface is provided with a gas turbine shaft hole for a gas turbine shaft to pass through; the sound-absorbing wall also comprises a side wall I, a side wall II and a top wall which are connected with the end surface, wherein the end surface, the side wall I, the side wall II and the top wall are made of sound-absorbing plates; the air inlet wall and the partition wall of the sound-proof cover are enclosed to form a cavity, and a combustion cavity of the gas turbine is arranged in the cavity. The air inlet wall structure of the sound-proof shield of the gas turbine and the partition wall of the sound-proof shield enclose a cavity, the combustion cavity of the gas turbine is arranged in the cavity, and the combustion cavity of the gas turbine is subjected to sound-proof treatment independently, so that the sound-proof effect is good.

Description

Air inlet wall structure of gas turbine sound-proof housing

Technical Field

The utility model relates to the technical field of gas turbines, in particular to an air inlet wall structure of a gas turbine sound-proof housing.

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.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model provides the air inlet wall structure of the gas turbine sound-proof housing, which has the advantages of strong universality, good sound-proof and noise-reduction effects and good ventilation.

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

the air inlet wall structure of the gas turbine sound-proof shield is distributed along the axial direction of a gas turbine and comprises an end face positioned on one side of an air inlet of the gas turbine, wherein the middle position of the end face is provided with a gas turbine shaft hole for a gas turbine shaft to pass through; the sound-absorbing wall also comprises a side wall I, a side wall II and a top wall which are connected with the end surface, wherein the end surface, the side wall I, the side wall II and the top wall are made of sound-absorbing plates; the air inlet wall and the partition wall of the sound-proof cover are enclosed to form a cavity, and a combustion cavity of the gas turbine is arranged in the cavity.

Furthermore, the air inlet wall structure is a frame structure formed by overlapping a plurality of cross beams and vertical beams which are arranged in a crossed manner, and the silencing plate is embedded in the frame structure; the silencing plate comprises a supporting plate, a silencing layer and a porous plate in sequence from outside to inside, 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.

Preferably, the sound-deadening layer is rock wool.

Furthermore, an indoor air inlet I is arranged at the left upper part of the end face, and an indoor air inlet II is arranged at the upper part of the side wall II, which is close to the end face; and an exhaust pipeline connecting port is formed in one side, far away from the end face, of the top wall and is used for connecting an exhaust pipeline.

Furthermore, shutter type noise reduction sheets are arranged at the first indoor air inlet and the second indoor air inlet.

Furthermore, at least one access door is respectively arranged below the end face of the air inlet wall and the second side wall.

Furthermore, the air inlet wall is also provided with an equipment interface and a cable interface.

Furthermore, the cross beams and the vertical beams are made of H-shaped steel and are fixedly connected with each other through flange groups and bolts.

Compared with the prior art, the utility model has the beneficial effects that:

1) the air inlet wall structure of the sound-proof shield of the gas turbine and the partition wall of the sound-proof shield enclose a cavity, the combustion cavity of the gas turbine is arranged in the cavity, and the combustion cavity of the gas turbine is subjected to sound-proof treatment independently, so that the sound-proof effect is good.

2) The air inlet wall structure of the sound-proof shield of the gas turbine adopts a steel frame structure, is embedded with the silencing plate, is convenient to install, is provided with the independent air flow channel, has good air flow effect, and is beneficial to reducing the working environment temperature of the gas turbine.

3) According to the air inlet wall structure of the gas turbine sound-proof cover, the silencing sheet is arranged at the air inlet of indoor air, so that the wind noise generated by indoor air flowing 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 diagram of an external view according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of the internal view partial structure of the embodiment of the present invention;

FIG. 4 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 surface, 12-side wall I, 13-side wall II, 14-top wall, 41-indoor air inlet I, 42-indoor air inlet II, 43-exhaust pipeline connector, 44-silencing sheet, 51-access door and 52-cable connector.

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.

The air inlet wall structure of the gas turbine sound-proof shield is distributed along the axial direction of a gas turbine and comprises an end surface 11 positioned on one side of an air inlet of the gas turbine, wherein a gas turbine shaft hole is formed in the middle of the end surface 11 and used for a gas turbine shaft to pass through; the sound-absorbing wall further comprises a first side wall 12, a second side wall 13 and a top wall 14 which are connected with the end face 11, wherein the end face 11, the first side wall 12, the second side wall 13 and the top wall 14 are made of sound-absorbing plates; the air inlet wall and the partition wall of the sound-proof cover are enclosed to form a cavity, and a combustion cavity of the gas turbine is arranged in the cavity.

Specifically, the air inlet wall structure is a frame structure formed by overlapping a plurality of cross beams 10 and vertical beams 20 which are arranged in a cross way, and is appropriately assisted with an oblique beam 30, and a plurality of silencing plates 100 are embedded in the frame structure; 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 100 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 combustion chamber is surrounded by the partition wall of the air inlet wall structure and the sound-proof housing, and when the gas turbine works, noise enters the silencing plate from the small hole of the porous plate and is absorbed by rock wool filled in the silencing plate, so that noise is reduced.

Furthermore, a first indoor air inlet 41 is arranged at the upper left position of the end surface 11, and a second indoor air inlet 42 is arranged at the upper position of the side wall 13 close to the end surface 11; the exhaust pipeline connecting port 43 is formed in one side, far away from the end face 11, of the top wall 14 and used for being connected with an exhaust pipeline, fresh air enters from the indoor air inlet I and the indoor air inlet II close to the end face 11 and is exhausted from the exhaust pipeline on the top wall 14 far away from the end face 11, the indoor air inlets I and II and the exhaust pipeline are arranged in opposite angles, flowing of indoor air is facilitated, the ventilation effect is enhanced, high-temperature gas in the combustion chamber is exhausted, and the working environment temperature of the gas turbine is reduced.

Further, the louver type noise reduction plates 44 are disposed at the first indoor air inlet 41 and the second indoor air inlet 42, air in the combustion chamber flows rapidly to generate wind noise, and the noise reduction plates 44 help to reduce the wind noise generated by the flow of the indoor air.

At least one access door 51 is arranged below the end face 11 and the second side wall 13 of the air inlet wall, so that workers can conveniently go in and out for installation, overhaul, cleaning and the like.

The air inlet wall is also provided with equipment interfaces, cable interfaces 52 and the like.

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 utility model.

Claims

1. The utility model provides an air inlet wall structure of gas turbine sound-proof housing which characterized in that: the gas inlet wall is arranged along the axial direction of the gas turbine and comprises an end face (11) positioned on one side of a gas inlet of the gas turbine, and a gas turbine shaft hole is formed in the middle of the end face (11) and is used for a gas turbine shaft to pass through; the sound-absorbing wall is characterized by further comprising a first side wall (12), a second side wall (13) and a top wall (14) which are connected with the end face (11), wherein the end face (11), the first side wall (12), the second side wall (13) and the top wall (14) are made of sound-absorbing plates (100); the air inlet wall and the partition wall of the sound-proof cover are enclosed to form a cavity, and a combustion cavity of the gas turbine is arranged in the cavity.

2. The gas turbine engine acoustic enclosure inlet wall structure of claim 1, wherein: the air inlet wall structure is a frame structure formed by overlapping a plurality of cross beams (10) and vertical beams (20) which are arranged in a crossed mode, and the silencing plate (100) is embedded in the frame structure; amortization panel (100) outside-in is backup pad (101), amortization layer (102), perforated plate (103) in proper order, amortization layer (102) clamp is between backup pad (101) and perforated plate (103), backup pad (101) are connected with perforated plate (103), perforated plate (103) are inboard towards the cavity.

3. The gas turbine engine acoustic enclosure inlet wall structure of claim 2, wherein: the sound attenuation layer (102) is rock wool.

4. The gas turbine engine acoustic enclosure inlet wall structure of claim 1, wherein: an indoor air inlet I (41) is arranged at the left upper part of the end face (11), and an indoor air inlet II (42) is arranged at the upper part of the side wall II (13) close to the end face (11); and an exhaust pipeline connecting port (43) is formed in one side, far away from the end face (11), of the top wall (14) and is used for connecting an exhaust pipeline.

5. The gas turbine engine acoustic enclosure inlet wall structure of claim 4, wherein: shutter type noise reduction sheets (44) are arranged at the first indoor air inlet (41) and the second indoor air inlet (42).

6. The gas turbine engine acoustic enclosure inlet wall structure of claim 1, wherein: at least one access door (51) is respectively arranged below the end surface (11) and the second side wall (13) of the air inlet wall.

7. The gas turbine engine acoustic enclosure inlet wall structure of claim 1, wherein: the air inlet wall is also provided with an equipment interface and a cable interface (52).

8. The gas turbine engine acoustic enclosure inlet wall structure of claim 2, wherein: the transverse beam (10) and the vertical beam (20) are made of H-shaped steel and are fixedly connected with each other through a flange group and a bolt.