CN213981256U - Muffler device for forced cooling and air exhaust of electrical cabinet - Google Patents
Muffler device for forced cooling and air exhaust of electrical cabinet Download PDFInfo
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- CN213981256U CN213981256U CN202022188479.XU CN202022188479U CN213981256U CN 213981256 U CN213981256 U CN 213981256U CN 202022188479 U CN202022188479 U CN 202022188479U CN 213981256 U CN213981256 U CN 213981256U
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Abstract
The utility model discloses a muffler device for forced cooling and air exhaust of an electric cabinet, which comprises a muffler box body (1) and a combined involute type flow guide block (2) arranged in the muffler box body (1), wherein the muffler box body (1) is provided with an air inlet (5) and an air outlet (6) which are perpendicular to each other, and the air inlet (5) and the air outlet (6) are respectively provided with a flange; the flow guide block (2) is positioned in a right-angle interval formed by the air inlet (5) and the air outlet (6), and the outer framework of the flow guide block (2) and the inner air channel framework of the silencer box body (1) are both provided with perforated plates (3). The silencer is simple and exquisite in structure, small in size, low in manufacturing cost, good in noise elimination performance and aerodynamic performance compatibility, and capable of effectively reducing working environment noise generated by forced cooling and air exhaust of the electrical cabinet and effectively protecting hearing and health of workers.
Description
Technical Field
The utility model belongs to the technical field of ventilation noise elimination mechanical equipment, more specifically relates to a noise eliminator that regulator cubicle forced cooling was aired exhaust.
Background
The high-power electrical equipment engine unit continuously operates, a large amount of heat is generated in the space in the cabinet, a ventilation cycle is formed through an exhaust system, and the temperature is reduced, so that the constant temperature of the space in the unit is achieved. Meanwhile, the exhaust system generates strong noise in the operation process, and excessive noise can interfere the outside world and cause serious noise pollution, so that effective measures are required to be taken for prevention and treatment; therefore, the problem of air exhaust and noise reduction of electrical equipment is solved, and the problem is also a great technical problem in the future at present.
A muffler is a device that prevents sound from propagating while allowing airflow to pass through, and is an important measure for eliminating aerodynamic noise. The silencer is a device for reducing noise which is arranged on an airflow channel of air power equipment (such as an air blower, an air compressor, a boiler exhaust port, a generator, a water pump and other equipment with larger noise at an exhaust port) or in an air inlet and exhaust system, and is equipment which can not only enable airflow to pass smoothly, but also effectively reduce noise, therefore, the silencer must meet two performance indexes of ventilation and noise elimination; generally, ventilation performance, also called aerodynamic performance, is one of important indexes for evaluating the performance of the muffler and is also a factor to be considered in the design of the muffler.
The existing electric cabinet exhaust silencer mostly adopts a structure for increasing exhaust resistance to exhaust and noise reduction, and the structure has the defects of poor noise reduction effect due to large volume, high manufacturing cost, poor compatibility of noise reduction performance and aerodynamic performance, and incapability of meeting the requirement of forced cooling, exhaust and noise reduction of an electric cabinet.
SUMMERY OF THE UTILITY MODEL
To prior art's above defect or improvement demand, the utility model provides a noise eliminator that regulator cubicle forced cooling was aired exhaust, through establish combination involute type water conservancy diversion piece in the silencer box of rectangle, improved the inside smoothness in wind channel on the one hand, on the other hand makes the ventilation duct for tightening up-opening the form, is favorable to concentrating on tightening up the section with wind noise, and then absorbs the noise. The silencer is simple and exquisite in structure, only consists of two parts, small in size, low in manufacturing cost, good in noise elimination performance and aerodynamic performance compatibility, mainly applied to an integrated workshop or a centralized control hall where large and medium integrated control cabinets (boxes) are distributed in a centralized mode, capable of effectively reducing working environment noise generated by forced cooling and air exhaust of the electrical cabinets, remarkably improving acoustic comfort in a closed working space and effectively protecting hearing and health of workers.
In order to achieve the above object, the utility model provides a muffler device for forced cooling and air exhaust of an electrical cabinet, which is arranged in an air outlet or an air exhaust pipeline of the electrical cabinet, and comprises a muffler box body and a combined involute type flow guide block arranged in the muffler box body, wherein the muffler box body is provided with an air inlet and an air outlet which are perpendicular to each other, and the air inlet and the air outlet are respectively provided with a flange;
the silencer box body is of a rectangular box body structure, the inner wall of the silencer box body is provided with a smooth curved surface bent to the flow guide block, and a channel for air to pass through is formed between the flow guide block and the silencer box body;
the flow guide block is arranged in a right-angle interval formed by the air inlet and the air outlet, the bent section of the flow guide block along the axial direction of the air duct adopts a multi-section involute combination mode, the flow guide block and the silencer box body jointly form a ventilation air duct with simple inner shape and smooth transition, and the section of the air duct is of a structure which is gradually tightened up and then gradually unfolded.
Furthermore, the outer framework of the diversion block and the inner air duct framework of the silencer box body are both provided with a perforated plate, the perforated plate is formed by bending a micro-perforated galvanized plate, and the edge of the perforated plate is fixed on the side wall of the silencer box body.
Furthermore, the wind speed of the forced exhaust is lower than 10m/s, and silencing materials are filled on the surfaces of the flow guide blocks and the air channel surface of the inner wall of the silencer box body.
Furthermore, the air speed of the forced exhaust air is 10-18 m/s, and the surfaces of the flow guide blocks, the surface of the air channel on the inner wall of the silencer box body and the side wall of the air channel are filled with silencing materials.
Furthermore, an interface flange customized according to the matched cabinet air outlet is arranged at the air inlet, and the whole interface flange at the air outlet is of a rectangular annular structure.
Generally, through the utility model discloses above technical scheme who conceives compares with prior art, can gain following beneficial effect:
(1) the utility model discloses a noise eliminator that regulator cubicle forced cooling was aired exhaust, the structure is succinct exquisite, only comprises two parts, through establish combination involute type water conservancy diversion piece in the silencer box of rectangle, has improved the inside smoothness in wind channel on the one hand, and on the other hand makes the ventilation duct for tightening up-opening the form, is favorable to concentrating on tightening up the section with wind noise, and then absorbs the noise. The silencer is simple and exquisite in structure, only consists of two parts, small in size, low in manufacturing cost, good in silencing performance and aerodynamic performance compatibility, mainly applied to an integrated workshop or a centralized control hall where large and medium integrated control cabinets (boxes) are intensively arranged, capable of effectively reducing working environment noise generated by forced cooling and air exhaust of the electrical cabinets, remarkably improving acoustic comfort in a closed working space and effectively protecting hearing and health of workers;
(2) the utility model discloses a muffler device that regulator cubicle forced cooling airs exhaust, through setting up the perforated plate that the microperforated galvanized sheet was buckled and is formed at the outer framework of water conservancy diversion piece and the internal air duct framework of silencer box, further strengthened the effect of making an uproar;
(3) the utility model discloses a noise eliminator of regulator cubicle forced cooling air exhaust, comprehensive consideration windage resistance and noise elimination noise reduction effect, according to the comprehensive aassessment and the actual demand to noise reduction magnitude of a noise and windage resistance, through between guide block outer frame, silencer box internal air channel framework and box outer wall, wind channel full path and part side selectively apply and pack noise elimination noise reduction material, can satisfy the noise reduction demand under the different speed conditions of airing exhaust, still avoid unnecessary cost consumption when improving the efficiency of reducing wind noise, the practicality is higher;
(4) the utility model discloses a noise eliminator that regulator cubicle forced cooling was aired exhaust sets up according to the interface ring flange of rack (case) air-out department customization of adaptation in air intake department, can satisfy the demand of making an uproar that falls of different model regulator cubicle forced cooling airs exhaust, and the practicality is higher.
Drawings
Fig. 1 is a schematic three-dimensional structure diagram of a muffler device for forced cooling and air exhaust of an electrical cabinet according to the present invention;
fig. 2 is a schematic view of the internal structure of the muffler device for forced cooling and air exhaust of the electrical cabinet of the present invention;
fig. 3 is a schematic view of an air outlet end interface flange structure (basic type) of the muffler device for electrical cabinet forced cooling and air exhaust.
In all the figures, the same reference numerals denote the same features, in particular: 1-silencer box body, 2-diversion block, 3-perforated plate, 4-silencing material, 5-air inlet and 6-air outlet.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Furthermore, the technical features mentioned in the embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.
As shown in fig. 1-3, an embodiment of the present invention provides a muffler device for electrical cabinet forced cooling exhaust, which is mainly suitable for silencing and denoising forced cooling exhaust in medium and large electrical control cabinets (boxes), and includes a muffler box 1 and a combined involute type flow guide block 2 installed in the muffler box 1, wherein the muffler box 1 is provided with an air inlet 5 and an air outlet 6 that are perpendicular to each other, and the air inlet 5 and the air outlet 6 are respectively provided with a flange; the utility model discloses a silencer structure is succinct exquisite, only comprises two parts, small in size, low in manufacturing cost, good in compatibility of noise elimination performance and aerodynamic performance, high in practicability, simple in structure, and easy to assemble and disassemble, and can effectively improve noise elimination and noise reduction performance;
further, as shown in fig. 1-2, the muffler box 1 is a rectangular box structure, the inner wall of which has a smooth curved surface bent toward the flow guide block 2, and a channel for air to pass through is left between the flow guide block 2 and the muffler box 1; the outer framework of the flow guide block 2 and the inner air duct framework of the silencer box body 1 are both provided with perforated plates 3, the perforated plates 3 are formed by bending micro-perforated galvanized plates, and the micro-perforated galvanized plates are good sound-absorbing materials and can effectively reduce wind noise; the edge of the perforated plate 3 is fixed on the side wall of the silencer box body 1; the utility model provides a muffler device for forced cooling and air exhaust of an electrical cabinet, which is characterized in that a perforated plate formed by bending a micro-perforated galvanized plate is arranged on an outer framework of a flow guide block and an inner air duct framework of a muffler box body, so that the structure is simple, wind noise can be effectively reduced, and the noise reduction effect is enhanced;
further, as shown in fig. 1-2, according to the comprehensive evaluation and actual requirements for the noise reduction level and the wind resistance, the noise-reducing material 4 can be applied and filled between the outer frame of the flow guide block, the air duct frame inside the silencer cabinet and the outer wall of the cabinet, and the whole path of the air duct, or the noise-reducing material 4 can be selectively applied and filled on part of the side surfaces; specifically, if the wind speed (air inlet section) of forced air exhaust is lower than 10m/s, the noise elimination and noise reduction materials are only filled on the surface of the upper flow guide block of the air duct and the surface of the air duct of the box body, so that the wind resistance is effectively reduced, and the ventilation and heat dissipation effects are ensured while the noise elimination and noise reduction effects are ensured; if the wind speed of the forced exhaust is 10 m/s-18 m/s, the side wall of the air duct is also coated with a noise elimination and noise reduction material with a rated thickness to ensure the noise elimination and noise reduction effect. The forced air exhaust speed is more than 18m/s, and the noise elimination and reduction performance can not meet the requirement possibly; the utility model provides a regulator cubicle forced cooling air exhaust's noise eliminator, comprehensive consideration windage resistance and noise elimination noise reduction effect, according to the comprehensive aassessment and the actual demand to noise elimination noise reduction magnitude and windage resistance, selectively apply and pack noise elimination noise reduction material between guide block outer frame, silencer box internal air channel frame and box outer wall, air channel full path and part side, can satisfy the noise reduction demand under the different speed conditions of airing exhaust, avoided unnecessary cost consumption, the practicality is higher;
further, as shown in fig. 1-2, an interface flange plate customized according to the air outlet position of the adapted cabinet (box) is arranged at the air inlet 5; as shown in fig. 1-3, the interface flange 7 at the air outlet 6 is integrally of a rectangular annular structure, and is used for fixedly mounting the muffler between the electrical cabinet and the ventilation duct, so that the whole ventilation system is ensured to have good sealing performance, and the reliability and the practicability of the muffler are improved; the flange can be used for rat prevention and can also be used for series combination of similar silencers;
the embodiment of the utility model provides a noise eliminator theory of operation that regulator cubicle forced cooling was aired exhaust: the silencer box body is provided with an air inlet and an air outlet which are vertical to each other, the air inlet and the air outlet are respectively provided with matched flanges, a combined involute type flow guide block is arranged in a right-angle section formed by the air inlet and the air outlet in the silencer box body, the inner wall of the silencer box body is provided with a smooth curved surface bending to the flow guide block, and a channel for air to pass through is reserved between the flow guide block and the inner wall of the silencer box body; the guide block and the silencer box body jointly form a ventilation air duct with simple inner shape and smooth transition, and the cross section of the air duct has the structural characteristics of first tightening and then expanding; in the silencing operation process of the ventilation system, when the air exhaust of the electrical cabinet passes through, the wind noise energy can be concentrated in the middle tightening section of the air duct, and the silencing and noise reducing efficiency can be effectively improved under the condition of improving the wind resistance without exceeding the high level; this type silencer structure is succinct exquisite, only comprises two parts, and is small, low in manufacturing cost, noise cancelling performance and aerodynamic performance's compatibility are better, mainly is applied to integrated workshop or centralized control hall that large-and-medium-sized integrated control cabinet (case) were concentrated and are put, can effectively reduce the regulator cubicle forced cooling and exhaust produced operational environment noise, is showing to improve the acoustics travelling comfort in the closed work space, can effectively protect staff's hearing and health, has higher practicality.
It will be understood by those skilled in the art that the foregoing is merely a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included within the scope of the present invention.
Claims (5)
1. The utility model provides a noise eliminator that regulator cubicle forced cooling was aired exhaust, locates in the air outlet or the exhaust duct of regulator cubicle, its characterized in that: the silencer is characterized by comprising a silencer box body (1) and a combined involute type flow guide block (2) arranged in the silencer box body (1), wherein an air inlet (5) and an air outlet (6) which are perpendicular to each other are formed in the silencer box body (1), and flanges are respectively arranged on the air inlet (5) and the air outlet (6);
the silencer box body (1) is of a rectangular box body structure, the inner wall of the silencer box body is provided with a smooth curved surface which is bent to the flow guide block (2), and a channel for air to pass is formed between the silencer box body and the flow guide block (2);
the air-conditioning silencer is characterized in that the flow guide block (2) is arranged in a right-angle interval formed by the air inlet (5) and the air outlet (6), the bent section of the flow guide block (2) along the axial direction of the air duct adopts a multi-section involute combination mode, the flow guide block (2) and the silencer box body (1) jointly form a ventilation air duct with a simple and smooth transition shape, and the cross section of the air duct is a structure which is gradually tightened and then gradually unfolded.
2. The electrical cabinet forced cooling and exhaust silencing device according to claim 1, characterized in that: the outer framework of water conservancy diversion piece (2) with the inside wind channel framework of silencer box (1) all is equipped with perforated plate (3), perforated plate (3) are buckled by the microperforated galvanized sheet and are formed, the edge of perforated plate (3) is fixed on the lateral wall of silencer box (1).
3. The electrical cabinet forced cooling and exhaust silencing device according to claim 2, characterized in that: the air speed of forced exhaust is lower than 10m/s, and silencing materials (4) are filled on the surfaces of the flow guide blocks (2) and the air channel surface of the inner wall of the silencer box body (1).
4. The electrical cabinet forced cooling and exhaust silencing device according to claim 2, characterized in that: the air speed of forced exhaust is 10-18 m/s, and the surface of the flow guide block (2), the surface of the air channel on the inner wall of the silencer box body (1) and the side wall of the air channel are all filled with silencing materials (4).
5. The electrical cabinet forced cooling exhaust silencing device according to any one of claims 1-3, wherein: the air inlet (5) is provided with an interface flange customized according to the matched air outlet position of the cabinet, and the interface flange at the air outlet (6) is integrally of a rectangular annular structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022188479.XU CN213981256U (en) | 2020-09-29 | 2020-09-29 | Muffler device for forced cooling and air exhaust of electrical cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022188479.XU CN213981256U (en) | 2020-09-29 | 2020-09-29 | Muffler device for forced cooling and air exhaust of electrical cabinet |
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| CN213981256U true CN213981256U (en) | 2021-08-17 |
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| CN202022188479.XU Active CN213981256U (en) | 2020-09-29 | 2020-09-29 | Muffler device for forced cooling and air exhaust of electrical cabinet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114245658A (en) * | 2021-11-16 | 2022-03-25 | 上海电气电站设备有限公司 | Modular ventilation noise reduction structure of building block splicing type |
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2020
- 2020-09-29 CN CN202022188479.XU patent/CN213981256U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114245658A (en) * | 2021-11-16 | 2022-03-25 | 上海电气电站设备有限公司 | Modular ventilation noise reduction structure of building block splicing type |
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