Vibration reduction and noise reduction housing of steam turbine
By designing a fully sealed turbine vibration-absorbing and silencer case, combined with buffering, air induced, cooling and exhaust components, the problem of limited noise reduction effect in the existing technology is solved, effective noise isolation and vibration reduction are achieved, and the Normal cooling and operation of the turbine.
Patent Information
- Application Number
- CN202420336820.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-23
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-02-23
AI Technical Summary
The noise reduction effect of existing turbine hoods is limited because the heat dissipation port destroys the sealing properties, resulting in noise and vibration that cannot be effectively isolated.
Design a fully sealed turbine vibration-absorbing and silence housing, adopting buffer components and air induced, cooling and exhaust components. Vibration is reduced through buffer pads, air induced fan is pumped and cooled through cooling pipes, and exhaust components return gas to reduce temperature. .
A fully sealed structure is realized, effectively blocking noise propagation, reducing vibration transmission, providing noise reduction and shock absorption effects, and at the same time, preventing the turbine from overheating through the cooling system to ensure normal operation.
Smart Images
Figure CN222501827U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of steam turbine covers, in particular to a vibration-damping and sound-absorbing cover of a steam turbine. Background Art
[0002] The turbine cover usually refers to the external protective structure of the turbine, which is mainly used to enclose and protect the key components inside the turbine. It also has the functions of reducing noise, providing structural support and aesthetics.
[0003] The noise reduction effect of the steam turbine cover in the prior art is limited, because the steam turbine cover is usually provided with heat dissipation ports, which are used to dissipate heat from the steam turbine. The existence of the heat dissipation ports destroys the sealing of the cover, which affects the sound insulation performance of the cover. Air and sound can enter or leave the cover through the heat dissipation ports, resulting in limited sound insulation effect.
[0004] Therefore, it is necessary to design a vibration-damping and sound-absorbing cover of a steam turbine to solve the above problems. Utility Model Content
[0005] The utility model aims to solve the shortcomings in the prior art and proposes a vibration-damping and sound-absorbing cover for a steam turbine.
[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0007] A vibration-damping and sound-absorbing cover of a steam turbine comprises a base, wherein the base is provided with a slot, a bottom plate is arranged on the slot, a cover is fixed on the bottom plate, a buffer component is arranged in the slot, and an air induction component, a cooling component and an exhaust component are arranged in the cover.
[0008] As a preferred technical solution of the utility model, the buffer assembly includes a buffer pad, an annular groove, a mounting seat and an annular plate, the buffer pad is placed inside the groove, the annular groove is opened on the buffer pad, the mounting seat is placed in the buffer pad, the annular plate is fixedly sleeved on the mounting seat, and the annular plate is placed in the annular groove, and the mounting seat is fixedly connected to the base plate.
[0009] As a preferred technical solution of the utility model, the air induced draft assembly includes an air induced draft seat, a motor, an air induced draft fan, an air guide cover and an air intake duct. The air induced draft seat is fixed to the inner surface of the cover shell, the air induced draft seat is a hollow structure, and the bottom end of the air induced draft seat is open. The motor is installed inside the air induced draft seat, the air induced draft fan is connected to the output shaft of the motor, the air guide cover is fixed to the top of the air induced draft seat, and the air guide cover is connected to the inside of the air induced draft seat, and one end of the air intake duct is connected to the air guide cover.
[0010] As a preferred technical solution of the utility model, the cooling component includes a mounting tube and a cooling tube. The mounting tube is fixed to the inner top surface of the cover shell, and cooling medium is accumulated inside the mounting tube. The cooling tube is wound around the mounting tube, and one end of the mounting tube is connected to the other end of the intake pipe.
[0011] As a preferred technical solution of the utility model, the exhaust assembly includes an exhaust pipe and a plurality of air holes, the exhaust pipe is fixed on the mounting pipe, the plurality of air holes are opened on the exhaust pipe, and the exhaust pipe is connected to the cooling pipe through a pipeline.
[0012] As a preferred technical solution of the present utility model, the cooling pipe has a spiral structure.
[0013] The utility model has the following beneficial effects:
[0014] 1. The cover adopts a fully sealed structure, which can effectively hinder the propagation of noise generated during the operation of the turbine and provide noise reduction, which helps to reduce the impact of noise on the surrounding environment and operators;
[0015] 2. The bases are connected by a buffer structure, and the buffer pad is made of elastic material, such as rubber, which can effectively reduce the force transmitted from the turbine vibration to the base. This shock-absorbing design helps to protect the equipment and reduce the interference of vibration on the environment;
[0016] 3. The air in the casing is extracted through the exhaust action of the induced draft fan, cooled through the cooling pipe, and then reintroduced into the interior of the casing. This process plays a positive role in cooling the turbine, preventing it from overheating and helping to maintain its normal operation. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a structural schematic diagram of a vibration-damping and sound-absorbing cover of a steam turbine proposed by the utility model;
[0018] Figure 2 for Figure 1 A magnified view of the structure at A;
[0019] Figure 3 for Figure 1 A magnified view of the structure at B;
[0020] Figure 4 It is a structural schematic diagram of the induced draft component.
[0021] In the figure: 1 base, 2 slot, 3 bottom plate, 4 cover, 5 buffer pad, 6 annular groove, 7 mounting seat, 8 annular plate, 9 induced draft seat, 10 motor, 11 induced draft fan, 12 air guide cover, 13 air intake pipe, 14 mounting pipe, 15 cooling pipe, 16 exhaust pipe, 17 air hole. DETAILED DESCRIPTION
[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0023] Reference Figure 1-4 A vibration-damping and sound-absorbing cover of a steam turbine comprises a base 1, a slot 2 is formed on the base 1, a bottom plate 3 is arranged on the slot 2, a cover 4 is fixed on the bottom plate 3, a buffer component is arranged in the slot 2, and an air induced component, a cooling component and an exhaust component are arranged in the cover 4.
[0024] Reference Figure 3 The buffer assembly includes a buffer pad 5, an annular groove 6, a mounting seat 7 and an annular plate 8. The buffer pad 5 is placed inside the slot 2. The annular groove 6 is opened on the buffer pad 5. The mounting seat 7 is placed in the buffer pad 5. The annular plate 8 is fixedly sleeved on the mounting seat 7, and the annular plate 8 is placed in the annular groove 6. The mounting seat 7 is fixedly connected to the base plate 3. The buffer pad 5 is made of elastic material, such as rubber material. When the steam turbine vibrates, the base 3 will vibrate accordingly, which makes the mounting seat 7 and the annular plate 8 vibrate, and the buffer pad 5 can weaken the vibration force of the mounting seat 7 and the annular plate 8, thereby playing a role in buffering and shock absorbing the operation of the steam turbine.
[0025] Reference Figure 4 The induced draft component includes an induced draft seat 9, a motor 10, an induced draft fan 11, a guide cover 12 and an air inlet pipe 13. The induced draft seat 9 is fixed to the inner surface of the cover 4. The induced draft seat 9 is a hollow structure, and the bottom end of the induced draft seat 9 is open. The motor 10 is installed inside the induced draft seat 9. The induced draft fan 11 is connected to the output shaft of the motor 10. The guide cover 12 is fixed to the top of the induced draft seat 9, and the guide cover 12 is connected to the inside of the induced draft seat 9. One end of the air inlet pipe 13 is connected to the guide cover 12. By setting the induced draft component, the motor 10 can drive the induced draft fan 11 to rotate when it is running. When the induced draft fan 11 rotates, it can perform an exhaust action and extract the air in the cover 4. Then, the induced draft fan 11 discharges the air into the cooling pipe 15 through the guide cover 12 and the air inlet pipe 13.
[0026] Reference Figure 2 The cooling component includes a mounting tube 14 and a cooling tube 15. The mounting tube 14 is fixed to the inner top surface of the cover shell 4, and a cooling medium is accumulated inside the mounting tube 14. The cooling tube 15 is wound around the mounting tube 14. One end of the mounting tube 14 is connected to the other end of the intake pipe 13. The cooling tube 15 is wound around the mounting tube 14, and a cooling medium is accumulated inside the mounting tube 14, so that the mounting tube 14 can cool the cooling tube 15 and the gas flowing inside.
[0027] Reference Figure 1The exhaust assembly includes an exhaust pipe 16 and a plurality of air holes 17. The exhaust pipe 16 is fixed on the mounting pipe 14. The plurality of air holes 17 are opened on the exhaust pipe 16. The exhaust pipe 16 is connected to the cooling pipe 15 through a pipeline. The plurality of air holes 17 are evenly distributed on the exhaust pipe 16 to ensure that the low-temperature gas can be evenly distributed inside the cover 4.
[0028] Reference Figure 1 The cooling pipe 15 has a spiral structure. This design can extend the flow time of the gas in the cooling pipe 15 and ensure the cooling effect of the installation pipe 14 on the gas.
[0029] The specific working principle of the utility model is as follows:
[0030] The cover 4 proposed in the utility model is a fully sealed structure. The steam turbine is placed inside the cover 4 and mounted on the bottom plate 3. The fully sealed cover 4 can hinder the propagation of noise and reduce the noise of the steam turbine. In addition, the base 3 is connected to the base 1 through a buffer structure. The buffer pad 5 built into the groove 2 is made of elastic material, such as rubber material. When the steam turbine vibrates, the base 3 will vibrate accordingly, which makes the mounting seat 7 and the annular plate 8 vibrate, and the buffer pad 5 can weaken the vibration force of the mounting seat 7 and the annular plate 8, which plays a role of buffering and shock absorption for the operation of the steam turbine, thereby further reducing the noise generated during the operation of the steam turbine. Secondly, an annular groove 6 is provided on the buffer pad 5, and an annular plate 8 is fixed on the mounting seat 7. The annular plate 8 is placed in the annular groove 6, which can prevent the base 3 and the base 1 from separating from each other and ensure the overall stability of the device.
[0031] When the steam turbine is in operation, the staff starts the motor 10. When the motor 10 is running, it can drive the induced draft fan 11 to rotate. When the induced draft fan 11 rotates, it can perform a suction action and extract the air in the cover 4. Then, the induced draft fan 11 discharges the air into the cooling pipe 15 through the deflector 12 and the air inlet pipe 13. The cooling pipe 15 is wound around the mounting pipe 14. The mounting pipe 14 has a cooling cutoff, which enables the mounting pipe 14 to cool the cooling pipe 15 and the gas flowing inside. The cooled gas will enter the exhaust pipe 16 and finally flow back to the inside of the cover 4 through a number of air holes 17, which can cool the inside of the cover 4, avoid overheating of the steam turbine, and ensure the normal operation of the steam turbine.
[0032] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A vibration-damping and sound-absorbing cover for a steam turbine, characterized in that: The invention comprises a base (1), wherein the base (1) is provided with a slot (2), a bottom plate (3) is arranged on the slot (2), a cover (4) is fixed on the bottom plate (3), a buffer component is arranged in the slot (2), and an air induction component, a cooling component and an exhaust component are arranged in the cover (4); The buffer assembly comprises a buffer pad (5), an annular groove (6), a mounting seat (7) and an annular plate (8); the buffer pad (5) is placed inside the slot (2); the annular groove (6) is formed on the buffer pad (5); the mounting seat (7) is placed inside the buffer pad (5); the annular plate (8) is fixedly sleeved on the mounting seat (7); the annular plate (8) is placed in the annular groove (6); and the mounting seat (7) is fixedly connected to the bottom plate (3); The air induction assembly comprises an air induction seat (9), a motor (10), an air induction fan (11), a guide cover (12) and an air inlet pipe (13); the air induction seat (9) is fixed on the inner surface of the housing (4); the air induction seat (9) is a hollow structure, and the bottom end of the air induction seat (9) is open; the motor (10) is installed inside the air induction seat (9); the air induction fan (11) is connected to the output shaft of the motor (10); the guide cover (12) is fixed on the top end of the air induction seat (9), and the guide cover (12) is connected to the inside of the air induction seat (9); one end of the air inlet pipe (13) is connected to the guide cover (12); The cooling component comprises a mounting tube (14) and a cooling tube (15); the mounting tube (14) is fixed to the inner top surface of the housing (4), and a cooling medium is accumulated inside the mounting tube (14); the cooling tube (15) is wound around the mounting tube (14), and one end of the mounting tube (14) is connected to the other end of the air intake pipe (13); The exhaust assembly comprises an exhaust pipe (16) and a plurality of air holes (17); the exhaust pipe (16) is fixed on the mounting pipe (14); the plurality of air holes (17) are all provided on the exhaust pipe (16); and the exhaust pipe (16) is connected to the cooling pipe (15) via a pipeline.
2. A vibration-damping and sound-absorbing casing of a steam turbine according to claim 1, characterized in that: The cooling pipe (15) has a spiral structure.