CN115512679A - Composite silencer for large-displacement steam discharge noise reduction - Google Patents
Composite silencer for large-displacement steam discharge noise reduction Download PDFInfo
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- CN115512679A CN115512679A CN202211306954.6A CN202211306954A CN115512679A CN 115512679 A CN115512679 A CN 115512679A CN 202211306954 A CN202211306954 A CN 202211306954A CN 115512679 A CN115512679 A CN 115512679A
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/172—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general using resonance effects
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- Acoustics & Sound (AREA)
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- Combustion & Propulsion (AREA)
- Fluid Mechanics (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention discloses a composite silencer for reducing noise in large-displacement steam emission, which comprises a silencer body, wherein an inlet pipe is integrally arranged at the lower end of the silencer body, a branch pipe is arranged in a first cavity, the upper end of the branch pipe penetrates through a second cavity and then is communicated with a third cavity, a plurality of branch pipe holes are formed in the section, located in the second cavity, of the branch pipe, and a resonance cylinder is arranged in the second cavity; a sawtooth silencing ring is fixedly arranged at the outlet at the upper end of the branch pipe; a plurality of flow guide pipes are arranged between the third cavity and the fourth cavity, a spiral cylinder is arranged between the fourth cavity and the fifth cavity, a throttling cylinder is arranged between the sixth cavity and the seventh cavity, the upper end of the throttling cylinder is communicated with the seventh cavity, a jetting cylinder is arranged between the seventh cavity and the eighth cavity, the upper end of the jetting cylinder is communicated with the eighth cavity, and the upper end of the eighth cavity is communicated with the outlet guide ring. Above-mentioned technical scheme, structural design is reasonable, noise elimination effect is good, the emission noise is little, long service life and practicality are good.
Description
Technical Field
The invention relates to the technical field of large-displacement steam medium noise elimination equipment, in particular to a composite muffler for large-displacement steam discharge noise reduction.
Background
The silencer is common industrial equipment and is applied to multiple industries such as thermal power plants, petrochemical plants, nuclear power plants and the like. According to the silencing principle, the silencer is mainly divided into three types of resistance silencing, resistance silencing and impedance combined silencing. The resistance noise elimination refers to that a sound absorption material is attached to the inner wall of the internal flow channel, and the sound absorption material is utilized to convert the friction of sound energy in the pores of the porous medium into heat energy which is dissipated, so that the passing sound energy is reduced. The resistance noise elimination means that the flow speed and pressure change is obviously changed by changing the flowing sectional area or increasing the resonant cavity, so as to generate the reflection and interference of sound energy, thereby reducing the sound energy radiated out and achieving the purpose of noise reduction. In practical application, resistive sound attenuation and reactive sound attenuation are combined to form a composite muffler so as to achieve a good sound attenuation effect.
However, generally, in the case of discharging steam with a large displacement, the structure of the silencer has disadvantages: the existing silencer for the occasions discharging steam with larger discharge capacity adopts a throttling injection principle and sound absorption materials to carry out noise elimination, the noise elimination effect is not ideal, the discharging noise is large, the living and ecological environment of surrounding residents can be influenced, and the practicability is poor.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the composite silencer for large-displacement steam discharge noise reduction, which has the advantages of reasonable structural design, good silencing effect, low discharge noise, long service life and good practicability.
In order to achieve the purpose, the invention provides the following technical scheme: a composite silencer for reducing noise in large-displacement steam emission comprises a silencer body, wherein an inlet pipe is integrally arranged at the lower end of the silencer body, and an outlet guide ring is integrally arranged at the upper end of the silencer body;
a first cavity, a second cavity, a third cavity, a fourth cavity, a fifth cavity, a sixth cavity, a seventh cavity and an eighth cavity are arranged in the silencer body, a branch pipe is arranged in the first cavity, the upper end of the branch pipe penetrates through the second cavity and then is communicated with the third cavity, a plurality of branch pipe holes are formed in the section, located in the second cavity, of the branch pipe, a resonance cylinder is arranged in the second cavity, and the resonance cylinder is located around the branch pipe holes;
a sawtooth silencing ring is fixedly arranged at an outlet at the upper end of the branch pipe;
a plurality of flow guide pipes are arranged between the third cavity and the fourth cavity, a spiral cylinder is arranged between the fourth cavity and the fifth cavity, the upper end of the spiral cylinder is communicated with the sixth cavity, a throttling cylinder is arranged between the sixth cavity and the seventh cavity, the upper end of the throttling cylinder is communicated with the seventh cavity, an injection cylinder is arranged between the seventh cavity and the eighth cavity, the upper end of the injection cylinder is communicated with the eighth cavity, and the upper end of the eighth cavity is communicated with the outlet guide ring.
The invention is further configured to: the upper end of the throttling cylinder is provided with a throttling cover plate, the throttling cover plate and the top of the throttling cylinder are integrally arranged or hinged through a pin shaft, the wall of the throttling cylinder is provided with a plurality of throttling holes, and the diameter of each throttling hole is 8mm.
The invention is further configured to: the upper end of the injection cylinder is provided with an injection cover plate, the injection cover plate and the top of the injection cylinder are integrally arranged or hinged through a pin shaft, and a plurality of partition plates are arranged in the injection cylinder.
The invention is further configured to: the number of the partition plates in the injection cylinder is more than four, the partition plates are fixedly connected with the cylinder wall of the injection cylinder, a plurality of injection cylinder holes are formed in the positions, located above the fourth partition plate, of the injection cylinder, and the diameters of the injection cylinder holes are 3mm.
The invention is further configured to: be provided with the protection section of thick bamboo around the eighth cavity, the inlayer of protection section of thick bamboo is provided with inlayer aperture and sound absorbing material layer, sound absorbing material layer and the internal face bonding of protection section of thick bamboo are fixed, and the diameter of inlayer aperture is 8mm.
The invention is further configured to: the utility model discloses a protection barrel, including protection barrel and urceolus, protection barrel is provided with the urceolus outward, it puts the thing cavity to form one between protection barrel and the urceolus, protection barrel and urceolus fixed connection, sound absorbing material fills in putting the thing cavity between protection barrel and urceolus.
The invention has the advantages that: the device has reasonable structure arrangement, utilizes the throttling injection for reducing pressure and temperature, is provided with auxiliary resonance cylinders, sawtooth silencing rings, spiral cylinders, protective cylinders filled with sound-absorbing materials and other components for combined noise reduction, has large sound transmission loss and good noise reduction effect, can reduce the emission noise to a greater extent, ensures the occupational health of workers in a factory, and protects the living and ecological environment of surrounding residents; long service life and good practicability.
The invention is further described with reference to the drawings and the specific embodiments in the following description.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
In the description of the present embodiment, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. appear, their indicated orientations or positional relationships are based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, the composite muffler for reducing noise in large-displacement steam emission disclosed by the invention comprises a muffler body 1, wherein an inlet pipe 2 is integrally arranged at the lower end of the muffler body 1, and an outlet guide ring 3 is integrally arranged at the upper end of the muffler body 1;
a first cavity 11, a second cavity 12, a third cavity 13, a fourth cavity 14, a fifth cavity 15, a sixth cavity 16, a seventh cavity 17 and an eighth cavity 18 are arranged in the silencer body 1, a branch pipe 4 is arranged in the first cavity 11, the upper end of the branch pipe 4 penetrates through the second cavity and then is communicated with the third cavity 13, a plurality of branch pipe holes 41 are formed in the second cavity section of the branch pipe 4, a resonant cylinder 5 is arranged in the second cavity 12, and the resonant cylinder 5 is arranged around the branch pipe holes 41; eliminating a part of low-frequency noise by utilizing a resonance principle;
a sawtooth silencing ring 42 is fixedly arranged at the outlet of the upper end of the branch pipe 4;
a plurality of flow guide pipes 6 are arranged between the third cavity 13 and the fourth cavity 14, fluid is guided to enter the fourth cavity 14 from the third cavity 13, and noise is reduced by using the throttling and diffusing principles;
a spiral cylinder 7 is arranged between the fourth cavity 14 and the fifth cavity 15, the upper end of the spiral cylinder 7 is communicated with a sixth cavity 16, a throttling cylinder 8 is arranged between the sixth cavity 16 and a seventh cavity 17, the upper end of the throttling cylinder 8 is communicated with the seventh cavity 17, an injection cylinder 9 is arranged between the seventh cavity 17 and an eighth cavity 18, the upper end of the injection cylinder 9 is communicated with the eighth cavity 18, and the upper end of the eighth cavity 18 is communicated with the outlet guide ring 3. Preferably, the bottom of the spiral cylinder 7 is not blocked and is used for communicating the fourth cavity 14 with the fifth cavity 15, a spiral component is installed in the spiral cylinder 7 and consists of a spiral sheet and a central supporting tube, the spiral sheet increases the length of a flow channel, and the noise is reduced by utilizing the principle of increasing energy consumption;
preferably, all the components are made of stainless steel materials, and adjacent components are connected and fixed through welding or bolts to form an integral structure, so that the noise reduction device is suitable for noise reduction of high-temperature and high-pressure steam media.
The inlet pipe 1 and the branch pipes 4 are integrally arranged, the inlet pipe 11 is divided into two branch pipes 10 in the first cavity 12, the flow area is increased, the flow speed is reduced, and the noise source is reduced.
In order to make the structure of the present invention more reasonable, preferably, the upper end of the throttle cylinder 8 of this embodiment is provided with a throttle cover plate, the throttle cover plate and the top of the throttle cylinder 8 are integrally arranged or hinged through a pin, the cylinder wall of the throttle cylinder 8 is provided with a plurality of throttle holes, and the diameter of each throttle hole is 8mm. The principle of jet frequency shift is used for noise reduction.
The upper end of the injection cylinder 9 is provided with an injection cover plate, the injection cover plate and the top of the injection cylinder 9 are integrally arranged or hinged through a pin shaft, and a plurality of partition plates 91 are arranged in the injection cylinder 9. Preferably, the outer cylinder and the conical end enclosure are arranged outside the injection cylinder 9, and the outer cylinder and the conical end enclosure are separated by a partition plate. An eighth cavity 18 is formed between the spray cylinder 9 and the outer cylinder for guiding the fluid to be discharged upwards.
The number of the partition boards 91 in the injection cylinder 9 is more than four, the partition boards 91 are fixedly connected with the cylinder wall of the injection cylinder 9, a plurality of injection cylinder holes are formed in the positions, located above the fourth partition board, of the injection cylinder 9, and the diameter of each injection cylinder hole is 3mm.
A protection cylinder is arranged around the eighth cavity 18, inner-layer small holes and a sound-absorbing material layer are formed in the inner layer of the protection cylinder, the sound-absorbing material layer is fixedly bonded with the inner wall surface of the protection cylinder, and the diameter of each inner-layer small hole is 8mm.
The utility model discloses a protection barrel, including a protection barrel, a protection barrel 10, a thing cavity is put to formation between protection barrel 10 and the urceolus, protection barrel and urceolus 10 fixed connection, sound absorbing material fills in the thing cavity of putting between protection barrel and urceolus 10.
When the utility model is used in the practical application,
steam enters from one end of the inlet pipe 1, enters the two branch pipes 4 from the other end, and reduces a noise source by utilizing the principle that the flow area is increased;
steam enters the third cavity 13 through the branch pipe 4, the branch pipe 4 penetrates through the second cavity 12, a branch pipe hole 41 is formed in the part of the second cavity 12, the periphery of the second cavity is provided with the resonance cylinder 5, resonance occurs through the branch pipe hole 41 and the cavity around the branch pipe hole 41, and a part of low-frequency noise is eliminated by utilizing the resonance principle;
steam is discharged through the outlet of the branch pipe 4, the outlet of the branch pipe 4 is provided with a sawtooth silencing ring 42, the original high-speed manifold is damaged by utilizing the flow interference principle, and the noise is reduced;
steam enters the fourth cavity 14 from the third cavity 13 through the draft tube 6, and the noise is further reduced by using the diffusion principle;
steam enters the fifth cavity 15 from the fourth cavity 14 through the bottom of the spiral cylinder 7 and flows out along the spiral flow channel, the circulation length is increased by utilizing the spiral flow channel, and the energy consumption is increased, so that the noise intensity is weakened;
the steam entering the fifth cavity 15 enters the sixth cavity 16 through the top of the spiral cylinder 7 and is diffused in the sixth cavity 16, so that the noise is further reduced by the diffusion principle;
the steam entering the sixth cavity 16 is discharged through the throttling cylinder 8, the top of the throttling cylinder 8 is provided with a throttling cover plate, the cylinder wall is provided with a throttling hole with the diameter of about 8mm, the throttling hole is used for throttling and decompressing the steam, and the noise is reduced by utilizing the throttling diffusion principle;
steam enters the seventh cavity 17 through the throttling cylinder 8, and noise is further reduced by utilizing the diffusion principle;
the steam entering the seventh cavity 17 is discharged to the eighth cavity 18 through the injection cylinder 9, the top of the injection cylinder 9 is provided with an injection cover plate, the part of the cylinder wall above the fourth partition plate is provided with an injection cylinder hole with the diameter of 3mm, and the noise is reduced by utilizing the injection frequency shift noise reduction principle;
the steam in the eighth cavity 18 further reduces noise through the small holes in the inner layer of the protective cylinder and the sound-absorbing material, and is discharged upwards to the atmosphere through the outlet guide plate 3.
The device has reasonable structure arrangement, utilizes the throttling injection for reducing pressure and temperature, is provided with auxiliary resonance cylinders, sawtooth silencing rings, spiral cylinders, protective cylinders filled with sound-absorbing materials and other components for combined noise reduction, has large sound transmission loss and good noise reduction effect, can reduce the emission noise to a greater extent, ensures the occupational health of workers in a factory, and protects the living and ecological environment of surrounding residents; except for the sound insulation material, all parts are made of stainless steel materials, so that the noise reduction device is long in service life, suitable for noise reduction of high-temperature and high-pressure steam media and good in practicability.
The above embodiments are described in detail for the purpose of further illustrating the present invention and should not be construed as limiting the scope of the present invention, and the skilled engineer can make insubstantial modifications and variations of the present invention based on the above disclosure.
Claims (6)
1. A composite muffler for large displacement steam discharge noise reduction, comprising a muffler body (1), characterized in that: an inlet pipe (2) is integrally arranged at the lower end of the silencer body (1), and an outlet guide ring (3) is integrally arranged at the upper end of the silencer body (1);
a first cavity (11), a second cavity (12), a third cavity (13), a fourth cavity (14), a fifth cavity (15), a sixth cavity (16), a seventh cavity (17) and an eighth cavity (18) are arranged in the silencer body (1), a branch pipe (4) is arranged in the first cavity (11), the upper end of the branch pipe (4) penetrates through the second cavity and then is communicated with the third cavity (13), a plurality of branch pipe holes (41) are formed in the second cavity section of the branch pipe (4), a resonance cylinder (5) is arranged in the second cavity (12), and the resonance cylinder (5) is located around the branch pipe holes (41);
a sawtooth silencing ring (42) is fixedly arranged at an outlet at the upper end of the branch pipe (4);
be provided with a plurality of honeycomb ducts (6) between third cavity (13) and fourth cavity (14), be provided with spiral section of thick bamboo (7) between fourth cavity (14) and fifth cavity (15), spiral section of thick bamboo (7) upper end and sixth cavity (16) intercommunication, be provided with throttle section of thick bamboo (8) between sixth cavity (16) and seventh cavity (17), throttle section of thick bamboo (8) upper end and seventh cavity (17) intercommunication, be provided with between seventh cavity (17) and eighth cavity (18) and spout a section of thick bamboo (9), spout a section of thick bamboo (9) upper end and eighth cavity (18) intercommunication, eighth cavity (18) upper end and export guide ring (3) intercommunication.
2. A composite muffler for large volume steam discharge noise reduction according to claim 1, wherein: the upper end of the throttling cylinder (8) is provided with a throttling cover plate, the throttling cover plate and the top of the throttling cylinder (8) are integrally arranged or hinged through a pin shaft, the cylinder wall of the throttling cylinder (8) is provided with a plurality of throttling holes, and the diameter of each throttling hole is 8mm.
3. A composite muffler for noise reduction of large volume steam emissions as claimed in claim 2, wherein: the upper end of the injection cylinder (9) is provided with an injection cover plate, the injection cover plate and the top of the injection cylinder (9) are integrally arranged or hinged through a pin shaft, and a plurality of partition plates (91) are arranged in the injection cylinder (9).
4. A composite muffler for noise reduction of large volume steam emissions as claimed in claim 3, wherein: the quantity of baffle (91) in spouting section of thick bamboo (9) sets up more than four, and baffle (91) all with the section of thick bamboo wall fixed connection of spouting section of thick bamboo (9), spout section of thick bamboo (9) and be located the position more than the fourth baffle and be provided with a plurality of spouting cylinder holes, the diameter in spouting cylinder hole is 3mm.
5. The composite muffler for large volume steam discharge noise reduction according to claim 4, wherein: a protection cylinder is arranged around the eighth cavity (18), an inner layer of the protection cylinder is provided with inner-layer small holes and a sound-absorbing material layer, the sound-absorbing material layer is fixedly bonded with the inner wall surface of the protection cylinder, and the diameter of each inner-layer small hole is 8mm.
6. The composite muffler for large volume steam discharge noise reduction according to claim 5, wherein: the utility model discloses a protection barrel, including protection barrel and urceolus (10), be provided with urceolus (10) outside the protection barrel, it puts the thing cavity to form one between protection barrel and urceolus (10), protection barrel and urceolus (10) fixed connection, sound absorbing material fills puts the thing cavity between protection barrel and urceolus (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211306954.6A CN115512679A (en) | 2022-10-25 | 2022-10-25 | Composite silencer for large-displacement steam discharge noise reduction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211306954.6A CN115512679A (en) | 2022-10-25 | 2022-10-25 | Composite silencer for large-displacement steam discharge noise reduction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115512679A true CN115512679A (en) | 2022-12-23 |
Family
ID=84513255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211306954.6A Pending CN115512679A (en) | 2022-10-25 | 2022-10-25 | Composite silencer for large-displacement steam discharge noise reduction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115512679A (en) |
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2022
- 2022-10-25 CN CN202211306954.6A patent/CN115512679A/en active Pending
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| CB03 | Change of inventor or designer information |
Inventor after: Zheng Xihua Inventor after: Xiang Yong Inventor after: Wang Youcai Inventor after: Jin Weihui Inventor after: Huang Liqi Inventor before: Zheng Xihua Inventor before: Liu Chunli Inventor before: Xiang Yong Inventor before: Wang Youcai Inventor before: Jin Weihui Inventor before: Huang Liqi Inventor before: Jiang Hao Inventor before: Wu Xinzhuang Inventor before: Xia Shuan |
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