Steam turbine sound insulation device for thermal power generation

Abstract

The steam turbine sound insulation device comprises a steam turbine body, a sound insulation cover is arranged on the outer side of the steam turbine body, and the bottom of the steam turbine body is connected with the inner wall of the bottom of the sound insulation cover through a plurality of shock insulation mechanisms which are evenly and orderly distributed. An air inlet noise reduction mechanism is arranged at the rear end of the sound insulation cover, and an exhaust noise reduction mechanism is arranged at the top end of the sound insulation cover; the sound insulation cover is sequentially composed of a perforated plate, a sound insulation felt, sound insulation cotton, a sound insulation plate and a metal plate from inside to outside. By starting the fan, external airflow enters the inner cavity of the first shell through the air inlet and enters the inner cavity of the sound insulation cover, air circulation is achieved in the sound insulation cover, the airflow carries heat generated when the steam turbine works and is discharged through the second shell and the air outlet, and therefore air cooling heat dissipation of the steam turbine is achieved. A good heat dissipation effect is achieved, and stable operation of the steam turbine is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of steam turbines in thermal power plants, in particular to a sound insulation device for steam turbines used for thermal power generation. Background Art

[0002] A steam turbine is an externally-combustion rotary machine that converts steam thermal energy into mechanical work. Steam from the boiler enters the turbine and passes through a series of annular nozzles and moving blades, converting the steam's thermal energy into mechanical energy that rotates the turbine rotor. The steam undergoes different energy conversion methods within the turbine, resulting in different operating principles.

[0003] Steam turbines generate vibrations and considerable noise during operation. Currently, noise reduction is achieved by isolating the engine room from the outside world. Therefore, a soundproofing device for steam turbines used in thermal power generation is designed to reduce noise transmission and significantly improve the working environment for surrounding personnel. Utility Model Content

[0004] The purpose of the utility model is to provide a sound insulation device for a steam turbine used for thermal power generation, so as to solve the technical problems raised in the background technology.

[0005] To achieve the above objectives, the specific technical solution of the present invention is as follows: A sound insulation device for a steam turbine for thermal power generation, comprising a steam turbine body, a sound insulation cover provided on the outside of the steam turbine body, and a bottom of the steam turbine body connected to the bottom inner wall of the sound insulation cover via a plurality of evenly and orderly distributed vibration isolation mechanisms, an air intake silencer provided at the rear end of the sound insulation cover, and an exhaust silencer provided at the top end of the sound insulation cover; wherein the sound insulation cover is composed of a porous plate, sound insulation felt, sound insulation cotton, a sound insulation board, and a metal plate in order from the inside to the outside; the air intake silencer mechanism includes a first shell, a plurality of air inlets distributed at equal intervals from top to bottom on one side of the first shell, a fan is installed in the inner cavity of the first shell, and a plurality of evenly spaced first sound insulation modules are provided in the interior of the first shell on one side of the fan; the exhaust silencer mechanism includes a second shell, a plurality of evenly spaced air outlets provided at both ends of the second shell, and a plurality of evenly spaced second sound insulation modules are provided in the inner cavity of the second shell.

[0006] Preferably, the seismic isolation mechanism includes a bottom plate and a top plate located above the bottom plate, the middle portion between the bottom plate and the top plate is connected via a damping rod, and the four corners of the bottom plate and the top plate are connected via springs.

[0007] Preferably, the rear end and the upper surface of the sound insulation cover are both provided with openings communicating with the first shell and the second shell.

[0008] Preferably, the first shell and the second shell are both frame structures with one side open.

[0009] Preferably, the long side of the first sound insulation module is distributed parallel to the wide side of the first shell.

[0010] Preferably, the long side of the second sound insulation module is parallel to the long side of the second shell, and the long side of the air outlet is parallel to the wide side of the second shell.

[0011] Preferably, the first sound insulation module is composed of glass fiber cotton, fireproof fiber cloth and galvanized porous plate in sequence, and the structure of the second sound insulation module is the same as that of the first sound insulation module.

[0012] The utility model provides a sound insulation device for a steam turbine used for thermal power generation, which has the following advantages:

[0013] 1. The utility model starts the fan so that the external airflow enters the inner cavity of the first shell through the air inlet and enters the inner cavity of the sound insulation cover, thereby realizing air circulation inside the sound insulation cover, and the airflow carries the heat generated by the steam turbine during operation and is discharged through the second shell and the air outlet, thereby realizing air cooling and heat dissipation of the steam turbine, having a good heat dissipation effect, and being conducive to the stable operation of the steam turbine. Through the cooperation between the glass fiber cotton, the fireproof fiber cloth and the galvanized porous plate, the air intake silencer mechanism and the exhaust silencer mechanism not only solve the heat dissipation problem of the equipment, but also have a good sound insulation and noise reduction effect, greatly improving the working environment quality of the surrounding staff.

[0014] 2. The utility model can muffle and block the noise inside the soundproof enclosure through the cooperation between the porous plate, sound insulation felt, sound insulation cotton, sound insulation board and metal plate. At the same time, it ensures the strength of the soundproof enclosure and extends the service life of the entire equipment.

[0015] 3. Through the cooperation between the bottom plate, top plate, damping rod and spring, the seismic isolation mechanism can buffer and reduce the vibration of the steam turbine during the operation of the steam turbine, thereby achieving the purpose of reducing the noise of the steam turbine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2This is a schematic diagram of the structure of the sound insulation cover in the utility model;

[0019] Figure 3 This is a schematic structural diagram of the seismic isolation mechanism of the present utility model;

[0020] Figure 4 This is a schematic structural diagram of the air intake silencer mechanism in the present utility model;

[0021] Figure 5 for Figure 4 Front view of

[0022] Figure 6 This is a schematic diagram of the structure of the exhaust silencer mechanism in the present utility model;

[0023] Figure 7 for Figure 6 Bottom view of .

[0024] Explanation of the marks in the figure: 1. Sound insulation cover; 2. Steam turbine body; 3. Vibration isolation mechanism; 4. Intake silencer mechanism; 5. Exhaust silencer mechanism; 6. Perforated plate; 7. Sound insulation felt; 8. Sound insulation cotton; 9. Sound insulation board; 10. Metal plate; 11. Bottom plate; 12. Top plate; 13. Damping rod; 14. Spring; 15. First shell; 16. Air inlet; 17. Fan; 18. First sound insulation module; 19. Second shell; 20. Air outlet; 21. Second sound insulation module. DETAILED DESCRIPTION

[0025] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and description are to be regarded as illustrative in nature and not restrictive.

[0026] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0028] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0029] The disclosure below provides many different embodiments or examples for implementing different structures of the embodiments of the present invention. In order to simplify the disclosure of the embodiments of the present invention, the components and settings of specific examples are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. In addition, the embodiments of the present invention may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0030] In order to better understand the purpose, structure and function of the present invention, the following is a further detailed description of a steam turbine sound insulation device for thermal power generation according to the present invention in conjunction with the accompanying drawings.

[0031] like Figure 1-7 As shown, the utility model is a sound insulation device for a steam turbine for thermal power generation, comprising a steam turbine body 2, a sound insulation cover 1 being provided on the outside of the steam turbine body 2, and the bottom of the steam turbine body 2 being connected to the bottom inner wall of the sound insulation cover 1 via a plurality of evenly and orderly distributed vibration isolation mechanisms 3, the vibration isolation mechanism 3 comprising a bottom plate 11 and a top plate 12 located above the bottom plate 11, the middle portion between the bottom plate 11 and the top plate 12 being connected via a damping rod 13, and the four corners of the bottom plate 11 and the top plate 12 being connected via springs 14. Through the cooperation between the bottom plate 11, the top plate 12, the damping rod 13 and the spring 14, the vibration isolation mechanism 3 can achieve buffering and vibration reduction of the steam turbine during operation, thereby achieving the purpose of reducing the noise of the steam turbine.

[0032] The rear end of the soundproof enclosure 1 is provided with an air intake silencer mechanism 4, and the top end of the soundproof enclosure 1 is provided with an exhaust silencer mechanism 5; wherein, the soundproof enclosure 1 is composed of a porous plate 6, a sound insulation felt 7, a sound insulation cotton 8, a sound insulation board 9 and a metal plate 10 from the inside to the outside. Through the cooperation between the porous plate 6, the sound insulation felt 7, the sound insulation cotton 8, the sound insulation board 9 and the metal plate 10, the noise in the soundproof enclosure 1 can be silenced and blocked, and at the same time, the strength of the soundproof enclosure 1 is ensured, and the service life of the entire equipment is extended; the air intake silencer mechanism The exhaust muffler mechanism 5 includes a first shell 15, one side of which is provided with a plurality of air inlets 16 distributed at equal intervals from top to bottom, and an inner cavity of the first shell 15 is provided with a fan 17. Inside the first shell 15, on one side of the fan 17, a plurality of first sound insulation modules 18 distributed at equal intervals are provided. The exhaust muffler mechanism 5 includes a second shell 19, both ends of the second shell 19 are provided with a plurality of air outlets 20 distributed at equal intervals, and an inner cavity of the second shell 19 is provided with a plurality of second sound insulation modules 21 distributed at equal intervals.

[0033] The rear end and upper surface of the soundproof enclosure 1 are both provided with openings communicating with the first shell 15 and the second shell 19. The first shell 15 and the second shell 19 are both frame structures with an opening on one side. By starting the fan 17, the external airflow enters the inner cavity of the first shell 15 through the air inlet 16 and enters the inner cavity of the soundproof enclosure 1, thereby realizing air circulation inside the soundproof enclosure 1. The airflow carries the heat generated by the steam turbine during operation and is discharged through the second shell 19 and the air outlet 20, thereby realizing air cooling and heat dissipation of the steam turbine, having a good heat dissipation effect, and being conducive to the stable operation of the steam turbine. The long side of the first sound insulation module 18 is parallel to the wide side of the first shell 15, the long side of the second sound insulation module 21 is parallel to the long side of the second shell 19, and the long side of the air outlet 20 is parallel to the wide side of the second shell 19. The first sound insulation module 18 is composed of glass fiber cotton, fireproof fiber cloth and galvanized porous plate in sequence, and the structure of the second sound insulation module 21 is the same as that of the first sound insulation module 18. Through the cooperation between glass fiber cotton, fireproof fiber cloth and galvanized porous plate, the air intake silencer mechanism 4 and the exhaust silencer mechanism 5 not only solve the heat dissipation problem of the equipment, but also have good sound insulation and noise reduction effects.

[0034] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A sound insulation device for a steam turbine used in thermal power generation, characterized in that: The invention comprises a steam turbine body (2), a soundproof cover (1) is provided on the outside of the steam turbine body (2), and the bottom of the steam turbine body (2) is connected to the bottom inner wall of the soundproof cover (1) through a plurality of vibration isolation mechanisms (3) distributed evenly and orderly, an air intake silencer mechanism (4) is provided at the rear end of the soundproof cover (1), and an exhaust silencer mechanism (5) is provided at the top end of the soundproof cover (1); wherein, The soundproof enclosure (1) is composed of a porous plate (6), a soundproof felt (7), soundproof cotton (8), a soundproof board (9) and a metal plate (10) in order from the inside to the outside; The air intake silencer mechanism (4) comprises a first shell (15), a plurality of air intakes (16) distributed at equal intervals are provided on one side of the first shell (15) from top to bottom, a fan (17) is installed in the inner cavity of the first shell (15), and a plurality of first sound insulation modules (18) distributed at equal intervals are provided inside the first shell (15) on one side of the fan (17); The exhaust silencer mechanism (5) comprises a second shell (19), both ends of the second shell (19) are provided with a plurality of air outlets (20) distributed at equal intervals, and the inner cavity of the second shell (19) is provided with a plurality of second sound insulation modules (21) distributed at equal intervals.

2. A sound insulation device for a steam turbine used for thermal power generation according to claim 1, characterized in that: The seismic isolation mechanism (3) comprises a bottom plate (11) and a top plate (12) located above the bottom plate (11); the middle portion between the bottom plate (11) and the top plate (12) is connected via a damping rod (13); and the four corners of the bottom plate (11) and the top plate (12) are connected via springs (14).

3. The sound insulation device for a steam turbine used for thermal power generation according to claim 1, characterized in that: The rear end and upper surface of the sound insulation cover (1) are both provided with openings communicating with the first shell (15) and the second shell (19).

4. The sound insulation device for a steam turbine used for thermal power generation according to claim 1, characterized in that: The first shell (15) and the second shell (19) are both frame structures with one side open.

5. The sound insulation device for a steam turbine used for thermal power generation according to claim 1, characterized in that: The long side of the first sound insulation module (18) is distributed parallel to the wide side of the first shell (15).

6. The sound insulation device for a steam turbine used for thermal power generation according to claim 1, characterized in that: The long side of the second sound insulation module (21) is parallel to the long side of the second shell (19), and the long side of the air outlet (20) is parallel to the wide side of the second shell (19).

7. The sound insulation device for a steam turbine used for thermal power generation according to claim 1, characterized in that: The first sound insulation module (18) is composed of glass fiber cotton, fireproof fiber cloth and galvanized porous plate in sequence, and the structure of the second sound insulation module (21) is the same as that of the first sound insulation module (18).

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