Intelligent ventilation device special for transformer substation
By designing an intelligent structure in the ventilation equipment of the substation, using the arrangement of eggshell sound-absorbing cotton and centrifugal glass rock wool combined with the sound-absorbing ring and cap, the problem of noise disturbance in the ventilation equipment is solved, and a more efficient noise reduction effect is achieved.
Patent Information
- Application Number
- CN202411503264.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-25
- Publication Date
- 2025-01-10
AI Technical Summary
The existing ventilation equipment has noise disturbed the public in special scenarios. The existing noise silencing measures cannot completely reduce noise, resulting in high noise and affecting the environment.
A special intelligent ventilation device for substations was designed. By providing a cavity on the inner wall of the device shell, and eggshell sound absorbing cotton and centrifugal glass rock wool are arranged in the axial flow fan shell, combining the sound silence ring and sound silence cap structure , respectively reduce noise in the axial and radial paths of noise propagation.
It significantly improves the noise reduction effect, effectively realizes the cancellation of axial and radial noise in hierarchical stages, reduces noise propagation, and improves the environmental silence effect.
Smart Images
Figure CN119288881A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of ventilation equipment, and in particular to a special intelligent ventilation device for a transformer substation. Background Art
[0002] The statements in this section merely provide background art related to the present invention and do not necessarily constitute prior art.
[0003] In existing ventilation equipment, the end of the fan duct is generally open-ended. However, when ventilating in some special scenarios, the sound of equipment inside the workshop and the sound of the fan itself will be diverted to the outside of the workshop. Especially when the factory is close to living areas or residential areas, the noise nuisance is particularly serious.
[0004] In response to the technical problems mentioned above, there is currently no better way to achieve noise reduction. Usually, silencer cotton is applied to the surface of the fan to reduce noise. However, during actual operation, it is impossible to completely reduce the noise. There is still a loud roaring sound at the end. The noise is loud, affecting the environment and often causing complaints from nearby residents. Summary of the Invention
[0005] In order to address the deficiencies of the prior art, the present invention provides a dedicated intelligent ventilation device for substations, which uses corresponding structural components to reduce noise in the axial and radial paths of noise propagation, greatly improving the noise reduction effect.
[0006] In order to achieve the above object, the present invention adopts the following technical solutions: In one or more embodiments, the present invention provides a dedicated intelligent ventilation device for a substation, comprising: a device housing and an axial flow fan housing, wherein the inner wall of the device housing is provided with a cavity, a first sound-absorbing cotton is arranged in the cavity, and the device housing includes a first sound-absorbing section and a second sound-absorbing section; The axial flow fan housing in the first silencer section is located inside the device housing, and the axial flow fan housing is used to accommodate the axial flow fan. The cavity of the second silencer section is arranged with a second sound-absorbing cotton, and the second silencer section is arranged in sequence along the axial direction with a first silencer ring, a first silencer cap, a second silencer cap, a second silencer ring, a third silencer cap, a fourth silencer cap, a third silencer ring, a fifth silencer cap and a fourth silencer ring.
[0007] As an embodiment, a device end plate is provided at one end of the device housing close to the axial flow fan housing, and the cavity of the first silencer section is formed by the axial flow fan housing and the inner wall of the device housing.
[0008] As an embodiment, the second sound-absorbing cotton is arranged between the first microporous plate and the second microporous plate, the first sound-absorbing cotton is eggshell sound-absorbing cotton, the second sound-absorbing cotton is centrifugal glass rock wool, and the cavity of the second sound-absorbing section is formed by the first microporous plate and the inner wall of the device shell.
[0009] Furthermore, the total radial dimension of the cavity inside the first silencer section is 150 mm, and the thickness of the eggshell sound-absorbing cotton is 38 mm; the total radial dimension of the cavity inside the second silencer section is 150 mm, the thickness of the centrifugal glass rock wool is 100 mm, and the thickness of the eggshell sound-absorbing cotton is 38 mm.
[0010] As an implementation method, the first silencer cap, the second silencer cap, the third silencer cap, the fourth silencer cap and the fifth silencer cap are regularly arranged crosswise at set angles to guide the spiral diffusion of the sound wave airflow. When each spiral diffuses, it absorbs the noise propagation from the axial direction along the set angle.
[0011] As an embodiment, the horizontal plane of the first silencer cap is parallel to the horizontal plane of the exhaust device; the horizontal plane of the second silencer cap is at an angle of 72° to the horizontal plane of the exhaust device; the horizontal plane of the third silencer cap is at an angle of 144° to the horizontal plane of the exhaust device; the horizontal plane of the fourth silencer cap is at an angle of 216° to the horizontal plane of the exhaust device; and the horizontal plane of the fifth silencer cap is at an angle of 288° to the horizontal plane of the exhaust device.
[0012] As an embodiment, the structures of the first muffler cap, the second muffler cap, the third muffler cap, the fourth muffler cap and the fifth muffler cap all include: The top taper is 120 degrees, and 1 / 2 is cut as the airflow organization flow surface. The height from the bottom of the cone to the top of the cone is 1 / 3 of the silencer cap diameter, and the height from the cut horizontal plane to the horizontal plane of the cone bottom is 1 / 20 of the silencer cap diameter.
[0013] As an implementation manner, the first muffler ring, the second muffler ring, the third muffler ring and the fourth muffler ring are arranged along the airflow direction.
[0014] As an embodiment, the detailed structures of the first muffler ring, the second muffler ring, the third muffler ring and the fourth muffler ring all include: The top taper is 90 degrees, and the height from the bottom of the cone to the split water surface is 1 / 20 of the diameter of the silencer ring.
[0015] In one or more embodiments, the present invention further provides a dedicated intelligent ventilation device for a substation, characterized in that: The device comprises: a device housing, an inner wall of the device housing is provided with a cavity, a first sound-absorbing cotton and a second sound-absorbing cotton are arranged in the cavity radially from the outside to the inside, and the device housing is sequentially arranged along the axial direction with a first muffler ring, a first muffler cap, a second muffler cap, a second muffler ring, a third muffler cap, a fourth muffler cap, a third muffler ring, a fifth muffler cap and a fourth muffler ring; The device housing, the first silencer ring, the first silencer cap, the second silencer cap, the second silencer ring, the third silencer cap, the fourth silencer cap, the third silencer ring, the fifth silencer cap, the fourth silencer ring, the first sound-absorbing cotton and the second sound-absorbing cotton constitute a silencer mechanism, and the axial flow fan is arranged in the silencer mechanism.
[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention innovatively develops a special intelligent ventilation device for substations. The device shell includes a first silencer section and a second silencer section. Corresponding structural parts are used to reduce noise in the axial path and radial path of noise propagation, greatly improving the noise reduction effect.
[0017] 2. The second silencer section of the present invention is arranged in sequence along the axial direction with a first silencer ring, a first silencer cap, a second silencer cap, a second silencer ring, a third silencer cap, a fourth silencer cap, a third silencer ring, a fifth silencer cap and a fourth silencer ring, which can effectively achieve axial silencer in layers and greatly reduce the noise transmitted in the axial direction.
[0018] 3. The total radial dimension of the cavity inside the first silencer section of the present invention is 150 mm, and the thickness of the eggshell sound-absorbing cotton is 38 mm. The effective radial noise reduction of the axial flow fan is achieved through the two-level coordination of the cavity and the eggshell sound-absorbing cotton.
[0019] 4. The total radial dimension of the cavity inside the second silencer section of the present invention is 150 mm, the thickness of the centrifugal glass rock wool is 100 mm, and the thickness of the eggshell sound-absorbing cotton is 38 mm. The radial noise reduction of the second small sound section is achieved through the three-level coordination of the cavity, eggshell sound-absorbing cotton and centrifugal glass rock wool.
[0020] 5. The first silencer cap, the second silencer cap, the third silencer cap, the fourth silencer cap and the fifth silencer cap of the present invention are regularly arranged crosswise at set angles to guide the spiral diffusion of the sound wave airflow. When each spiral diffuses, it absorbs the noise propagation from the axial direction along the set angle, thereby improving the axial noise reduction effect.
[0021] 6. The first, second, third and fourth silencer rings are arranged along the airflow direction and cooperate with the silencer caps to further improve the axial noise reduction effect.
[0022] Advantages of additional aspects of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.
[0024] Figure 1 This is a structural diagram of the intelligent ventilation device for substations provided by the present invention; Figure 2 A cross-sectional schematic diagram of the intelligent ventilation device for substations provided by the present invention; Figure 3 Schematic diagram of airflow organization of the intelligent ventilation device for substations provided by the present invention; Figure 4 This is an appearance rendering of the muffler cap provided by the present invention; Figure 5 This is an appearance rendering of the muffler ring provided by the present invention; Among them, 1. Device end plate; 2. First sound-absorbing cotton; 3. First microporous plate; 4. Second microporous plate; 5. Second sound-absorbing cotton; 6. Device housing; 7. Axial flow fan; 8. First silencer ring; 9. Second silencer ring; 10. Third silencer ring; 11. Fourth silencer ring; 12. First silencer cap; 13. Second silencer cap; 14. Third silencer cap; 15. Fourth silencer cap; 16. Fifth silencer cap; 17. Axial flow fan housing. DETAILED DESCRIPTION
[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0026] It should be noted that the following detailed descriptions are exemplary and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention belongs.
[0027] In this implementation, a special intelligent ventilation device for substations is proposed, such as Figure 1-Figure 5 As shown, it includes: a device housing 6 and an axial flow fan housing 17, a cavity is provided on the inner wall of the device housing 6, a first sound-absorbing cotton 2 is arranged in the cavity, and the device housing 6 includes a first sound-absorbing section and a second sound-absorbing section; The axial flow fan housing 17 in the first silencer section is located inside the device housing 6, and the axial flow fan housing 17 is used to accommodate the axial flow fan. The cavity of the second silencer section is radially arranged with the first sound-absorbing cotton 2 and the second sound-absorbing cotton 5 from the outside to the inside, and the second silencer section is axially arranged with the first silencer ring 8, the first silencer cap 12, the second silencer cap 13, the second silencer ring 9, the third silencer cap 14, the fourth silencer cap 15, the third silencer ring 10, the fifth silencer cap 16 and the fourth silencer ring 11.
[0028] In this implementation, the first sound-absorbing cotton 2, the first microporous plate 3, the second microporous plate 4, the second sound-absorbing cotton 5, four silencer rings, five silencer caps and the device housing 6 together constitute a combined silencer mechanism. The combined silencer structure is divided into four levels: the first-level silencer ring and silencer cap, the second-level first sound-absorbing cotton 2, the third-level cavity for silencer, and the fourth-level second sound-absorbing cotton 5.
[0029] In this implementation, optionally, an end plate 1 is provided at one end of the device housing 6 close to the axial flow fan housing 17. In this implementation, optionally, the second sound absorbing cotton 5 is arranged between the first microporous plate 3 and the second microporous plate 4.
[0030] In this implementation, preferably, the cavity of the first silencer section is formed by the axial fan housing 17 and the inner wall of the device housing 6, and the cavity of the second silencer section is formed by the first microporous plate 3 and the inner wall of the device housing 6.
[0031] The noise reduction in this implementation is divided into noise reduction in the radial direction of the axial flow fan 7 and noise reduction in the axial direction of the axial flow fan 7. The noise reduction in the radial direction of the axial flow fan 7 specifically includes: A first built-in cavity is formed between the axial fan housing 17 and the device housing 6, and a first sound-absorbing cotton is pasted inside the device housing 6. When the sound wave diffuses, secondary noise reduction is achieved through the first built-in cavity and the first sound-absorbing cotton. The effective space size inside the first built-in cavity is 150 mm, the thickness of the first sound-absorbing cotton occupies 38 mm, and the rest is a cavity.
[0032] Axial fan noise reduction in 7 axis directions, specifically including: A second built-in cavity is provided on the inner wall of the device housing 6. The size of the second built-in cavity is 150 mm, wherein the thickness of the first sound-absorbing cotton 2 is 100 mm, the thickness of the second sound-absorbing cotton 5 is 38 mm, and the rest is a cavity.
[0033] In this implementation, the first sound-absorbing cotton 2 is preferably made of eggshell sound-absorbing cotton, and the second sound-absorbing cotton 5 is preferably made of centrifugal glass rock wool. The first sound-absorbing cotton 2 and the second sound-absorbing cotton 5 are both flame-retardant materials, and both can be replaced with conventional sound-absorbing materials, which will not be repeated here.
[0034] In this implementation, the silencer rings and the silencer caps have the same diameter, and there are nine of them in total. They are arranged inside the combined silencer structure and arranged crosswise according to a certain rule. The arrangement order from left to right is: first silencer ring 8, first silencer cap 12, second silencer cap 13, second silencer ring 9, third silencer cap 14, fourth silencer cap 15, third silencer ring 10, fifth silencer cap 16 and fourth silencer ring 11.
[0035] like Figure 2As shown, the starting position of the second muffler section is at a distance D from the first muffler ring 8, the distance from the first muffler ring 8 to the first muffler cap 12 is B, the distance from the first muffler cap 12 to the second muffler cap 13 is B, the distance from the second muffler cap 13 to the second muffler ring 9 is B, the distance from the second muffler ring 9 to the third muffler cap 14 is B, the distance from the third muffler cap 14 to the fourth muffler cap 15 is B, the distance from the fourth muffler cap 15 to the third muffler ring 10 is B, the distance from the third muffler ring 10 to the fifth muffler cap 16 is E, the distance from the fifth muffler cap 16 to the fourth muffler ring 11 is E, and the distance from the fourth muffler ring 11 to the end position of the second muffler section is D.
[0036] The first muffler cap 12, the second muffler cap 13, the third muffler cap 14, the fourth muffler cap 15 and the fifth muffler cap 16 are regularly arranged crosswise at set angles to guide the spiral diffusion of the sound wave airflow. When further diffusing at each spiral, it enters the combined muffler structure along the set angle to absorb the noise propagation from the axial direction; the horizontal plane of the first muffler cap 12 is parallel to the horizontal plane of the exhaust device; the horizontal plane of the second muffler cap 13 is at an angle of 72° to the horizontal plane of the exhaust device; the horizontal plane of the third muffler cap 14 is at an angle of 144° to the horizontal plane of the exhaust device; the horizontal plane of the fourth muffler cap 15 is at an angle of 216° to the horizontal plane of the exhaust device; the horizontal plane of the fifth muffler cap 16 is at an angle of 288° to the horizontal plane of the exhaust device; the distance between the muffler caps conforms to the arrangement of A=3B, and makes E=3 / 4B; the length of the muffler section is approximately twice the diameter of the axial flow fan 7.
[0037] The detailed structures of the first muffler cap 12, the second muffler cap 13, the third muffler cap 14, the fourth muffler cap 15 and the fifth muffler cap 16 all include: a top taper of 120 degrees, 1 / 2 of which is cut off to serve as the airflow organizing flow surface, the height from the bottom of the cone to the top of the cone is 1 / 3 of the muffler cap diameter, and the height between the cut horizontal plane and the horizontal plane of the cone bottom is 1 / 20 of the muffler cap diameter.
[0038] The first muffler ring 8, the second muffler ring 9, the third muffler ring 10 and the fourth muffler ring 11 are arranged along the airflow direction, from left to right, with one at a distance of D, two at a distance of A, and two at a distance of 2E, from right to left, and D=1 / 3B.
[0039] The detailed structures of the first muffler ring 8, the second muffler ring 9, the third muffler ring 10 and the fourth muffler ring 11 all include: a top taper of 90 degrees, and a height from the bottom of the cone to the cut water surface of 1 / 20 of the muffler ring diameter.
[0040] Optionally, in some other implementations, the axial flow fan 7 is placed inside the combined silencer structure, that is, inside the second silencer section; the silencer structure can have a certain structural taper; or, the axial flow fan 7 adopts a volute-free form; the structure of each silencer cap can also be deformed.
[0041] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.
Claims
1. A special intelligent ventilation device for substation, characterized in that: include: A device housing and an axial flow fan housing, wherein a cavity is provided on the inner wall of the device housing, a first sound absorbing cotton is arranged in the cavity, and the device housing comprises a first sound absorbing section and a second sound absorbing section; The axial flow fan housing in the first silencer section is located inside the device housing, and the axial flow fan housing is used to accommodate the axial flow fan. The cavity of the second silencer section is arranged with a second sound-absorbing cotton, and the second silencer section is arranged with a first silencer ring, a first silencer cap, a second silencer cap, a second silencer ring, a third silencer cap, a fourth silencer cap, a third silencer ring, a fifth silencer cap and a fourth silencer ring in sequence along the axial direction.
2. The intelligent ventilation device for substation according to claim 1, characterized in that: An end portion of the device housing close to the axial flow fan housing is provided with a device end plate, and the cavity of the first muffler section is formed by the axial flow fan housing and the inner wall of the device housing.
3. The intelligent ventilation device for substation according to claim 1, characterized in that: The second sound absorbing cotton is arranged between the first microporous plate and the second microporous plate. The first sound absorbing cotton is eggshell sound absorbing cotton, and the second sound absorbing cotton is centrifugal glass rock wool. The cavity of the second muffler section is formed by the first microporous plate and the inner wall of the device shell.
4. The intelligent ventilation device for substation according to claim 3, characterized in that: The total radial dimension of the cavity inside the first silencer section is 150mm, and the thickness of the eggshell sound-absorbing cotton is 38mm; the total radial dimension of the cavity inside the second silencer section is 150mm, the thickness of the centrifugal glass rock wool is 100mm, and the thickness of the eggshell sound-absorbing cotton is 38mm.
5. The intelligent ventilation device for substation according to claim 1, characterized in that: The first silencer cap, the second silencer cap, the third silencer cap, the fourth silencer cap and the fifth silencer cap are regularly arranged crosswise at set angles to guide the spiral diffusion of the sound wave airflow. When each spiral diffuses, it absorbs the noise propagation from the axial direction along the set angle.
6. The intelligent ventilation device for substation according to claim 5, characterized in that: The horizontal plane of the first silencer cap is parallel to the horizontal plane of the exhaust device; the angle between the horizontal plane of the second silencer cap and the horizontal plane of the exhaust device is 72°; the angle between the horizontal plane of the third silencer cap and the horizontal plane of the exhaust device is 144°; the angle between the horizontal plane of the fourth silencer cap and the horizontal plane of the exhaust device is 216°; the angle between the horizontal plane of the fifth silencer cap and the horizontal plane of the exhaust device is 288°.
7. The intelligent ventilation device for substation according to claim 5 or 6, characterized in that: The structures of the first muffler cap, the second muffler cap, the third muffler cap, the fourth muffler cap and the fifth muffler cap all include: The top taper is 120 degrees and is cut in half to serve as the airflow organizing flow surface. The height from the cone bottom to the cone top is 1 / 3 of the silencer cap diameter, and the height from the cut horizontal plane to the cone bottom horizontal plane is 1 / 20 of the silencer cap diameter.
8. The intelligent ventilation device for substation according to claim 1, characterized in that: The first muffler ring, the second muffler ring, the third muffler ring and the fourth muffler ring are arranged along the airflow direction.
9. The intelligent ventilation device for substation according to claim 8, characterized in that: The detailed structures of the first muffler ring, the second muffler ring, the third muffler ring and the fourth muffler ring all include: The top taper is 90 degrees, and the height from the bottom of the cone to the cut water surface is 1 / 20 of the diameter of the silencer ring.
10. A special intelligent ventilation device for substation, characterized in that: include: A device shell, wherein a cavity is provided on the inner wall of the device shell, wherein a first sound-absorbing cotton and a second sound-absorbing cotton are arranged radially from the outside to the inside in the cavity, and a first muffler ring, a first muffler cap, a second muffler cap, a second muffler ring, a third muffler cap, a fourth muffler cap, a third muffler ring, a fifth muffler cap and a fourth muffler ring are sequentially arranged along the axial direction of the device shell; The device housing, the first silencer ring, the first silencer cap, the second silencer cap, the second silencer ring, the third silencer cap, the fourth silencer cap, the third silencer ring, the fifth silencer cap, the fourth silencer ring, the first sound-absorbing cotton and the second sound-absorbing cotton constitute a silencer mechanism, and the axial flow fan is arranged in the silencer mechanism.