Changsha DEJ mechanical and electrical technology co., LTD

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Enterprise Nature: Private
Operation Mode: Fabricators
Location: Yuhua District Changsha City Hunan Province China
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Product Details

Cooling tower transformer factory boundary air conditioning unit pump valve tunnel noise attenuation

Price 114
Unit
Yield 911/年
Place of Production 长沙
Product Category 环境保护类(火炬、废气制酸设备、废气精馏冷却塔)
Delivery Time 3天

Product Detail Parameters

隔音量 30

Product Description

The silencer ((Muffler)) is a device designed and produced by Changsha de Jie Electromechanical Technology Co., Ltd. to prevent sound transmission and allow air flow to pass through. It is an important measure to eliminate aerodynamic noise. The muffler (patent number: ZL201420804814.6) is a device for reducing noise in the air passage of the air power equipment (such as air blower, air compressor, boiler exhaust port, generator, water pump and so on), or in the inlet and exhaust systems. There are many kinds of silencers, but they are divided into six main types, namely, resistive silencer, resistant muffler, impedance compound silencer, microperforated board silencer, small hole muffler and active muffler.
Damping silencer
Noise reduction is mainly achieved by using porous sound absorbing materials. A sound silencer is formed by fixing sound absorbing material on the inner wall of the airflow channel or arranging it in a certain way in the pipeline. When sound waves enter a resistive silencer, part of the acoustic energy is frictional in the pores of porous materials and dissipates into thermal energy dissipation, resulting in the attenuation of sound waves through silencers. A resistive silencer is like a pure resistance circuit in electricity. Sound absorbing material is similar to resistance. Therefore, people call this muffler a resistive muffler. The resistive muffler has good effect on medium and high frequency noise elimination, and low noise attenuation effect. (mainly used for generator silencing)
The resistant muffler is composed of the tube and chamber of the abrupt interface. It is like an acoustic filter, similar to the electrical filter. Each tube with a tube is a mesh of the filter. The air quality in the tube is equivalent to the electrical inductance and resistance, called the sound mass and the acoustic resistance. The volume of air in the chamber is equivalent to the electrical capacitance, which is called sound compliance. Similar to the electrical filter, each tube chamber has its own natural frequency. When the sound waves containing various frequency components enter the first short tube, only the sound waves at some frequencies near the natural frequency of the first mesh can reach second short tubes through the mesh holes, while some other frequencies are not possible to pass through the mesh. The structure of the wave has the filter function as the acoustic filter. The proper combination of tube and chamber can filter out some frequency components and achieve the purpose of noise elimination. The resistance muffler is suitable for eliminating medium and low frequency noise. The resistive composite muffler is made by combining resistive structure and resistance structure in a certain way. Micro perforated plate silencer
It is usually made of pure metal sheet and perforated with a bit smaller than 1mm on the sheet. The perforation rate is 1% 1 3%. The spectrum performance of the muffler can be controlled by selecting the different perforation rate and the depth of the cavity with different thickness of the plate, so that it can get a good silencing effect in the required frequency range. The structure of the small hole muffler is a straight pipe closed at the end, and many small holes are drilled on the wall. The principle of the small hole muffler is based on the spectrum of jet noise. If the total area of the nozzle is kept constant and replaced by a lot of small nozzle, the frequency spectrum of the jet noise will move to high frequency or UHF when the air flow passes through the hole, so that the audible components in the spectrum can be reduced obviously, thus reducing the interference and damage to the people.
The basic principle of the active muffler is that in the original sound field, an electronic device is used to produce a sound wave that is equal to the original sound pressure and the phase is opposite, so that the sound field is counterbalanced against the original sound field in a certain range. The muffler is a set of instruments, mainly composed of microphone, amplifier, phase shifter, power amplifier and loudspeaker. The new high efficiency anti spray resistance type silencer equipment can be widely used in power, chemical, metallurgical, textile and other industrial factories and mines for various types of boiler, steam turbine exhaust, fan, safety door and other equipment. This series of silencers are developed according to the principle of anti, spray and resistance compound silencing. It has many advantages, such as large amount of silencing, small volume, light weight, easy to install and easy to install. The muffling frequency characteristic of the muffler. The anti surge muffler is superior to all frequency noise. The applicable wind speed of mufflers is generally 6-8m/s, the highest should not exceed 12m/s, while the pressure loss of silencers should be noted. Pay attention to the cross section of the net channel of the muffler. When necessary, the wind duct and the muffler must be amplified when necessary.
• installation of silencers such as mufflers must have independent bearing hangers or pedestal, and sound source devices must be connected through flexible joints. When two silencers are used in series, the connection distance between the two elbows should be 2.5 times higher than the diagonal length of the elbow section. For the environment system with high temperature, high humidity, oil mist and water gas, microporous structure silencing equipment is used generally, and microporous structure silencing equipment should be used for the environmental system such as operation room, recording room, clean factory and so on. When the adjacent rooms are connected, attention should be paid to the mutual influence of indoor noise through pipelines, and the muffler should be treated if necessary.

Product Performance

长沙德捷机电科技有限公司为专业从事消音降噪技术研究、开发、噪音治理系统工程设计、制造和技术服务的专业化高科技公司; 本公司多年从事综合噪声控制工程、各种消音降噪成套设备的研制生产与高新技术开发,具备很强的非标及新产品开发设计能力,现有消音产品(专利号:ZL201420804814.6)已广泛应用于工业与民用建筑及钢铁、冶炼 、石油、化工、电力、造纸、纺织、盐业、烟草、水处理、电信、航空、航天、航海、高速公路、铁路、高铁、地铁、轻轨、车站、机场、医院等行业场所,产品远销印度、巴西、土耳其、马来西亚等多个国家。本公司可解决多种类型噪声问题。针对各种工业设备噪声、暖通系统(冷却塔、热泵、风机)噪声、工业厂房动力站(冷冻站或泵房)综合多声源噪声、高噪声实验室等不同声源或混合声场,进行全面的噪声治理。针对轨道交通噪声、实验室噪声、厂界噪声、隧道地铁交通噪声等不同的噪声特性问题,设计出不同的合理解决方式和降噪产品;其中本公司隔音设备(专利号:ZL201420625307.6)用于高噪音设备的隔音吸声,产品采用模块拼装结构,拆装方便。可根据客户需要设置开孔,配套隔音观察窗等,专业生产的隔音罩(专利号:ZL201420626000.8)具备宽频隔音吸音性能,可有效降低设备的噪音,极大改善工作环境。欢迎新老客户光临我厂技术指导考察 。专业为客户进行噪声测量、定量分析与设计,降噪产品研制、设计、加工、安装、检测,提供专业的降噪解决方案和完善的系统服务。公司致力于声学产品的研究、开发和制造,以及降噪减振工程的施工,以优质优价的产品为广大客户服务。致力于噪声和声学问题的解决,融合了现代建筑的特点和景观设计的要求,降噪设计更加人性化,力求让噪声问题的解决符合现代美学的风格,针对不同的声环境提出最合理的工艺解决方案及设备。
公司拥有各类(含主要冷、热加工设备、无损检测、理化试验、调试等)设备,采用计算机CAD辅助设计技术进行产品的研发、设计。公司依托高科技,不断开发环保、节能高新技术产品是我公司的发展方向和经营方针,并将一如既往,“诚信经营、质量为本”,致力于创新、着眼于未来,与您共创美好家园.

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