All kinds of boilers and steam used in chemical, metallurgical, textile and other industrial factories and mines.
Exhaust steam; Fan; Noise elimination and noise reduction of emergency doors and other equipment.
A muffler is a device that prevents sound from spreading and allows airflow to pass through.
Eliminating the dynamic noise of steam emission is an important measure. Measuring exhaust muffler
Good or bad, mainly consider the following three aspects:
1, muffler can meet the hygienic standard for noise in industrial enterprises.
Requirements;
2. Adaptability of muffler; (that is, it is suitable for low-middle spectrum broadband and high temperature.
Stress, etc. )
3. Structural performance of muffler. Reasonable size, low cost, long service life, etc. )
)
The boiler steam in the power generation department is not only high in temperature and pressure, but also wide in emission frequency band.
It is not enough to rely on small hole noise elimination. The exhaust muffler of boiler in our factory is based on resistance,
Based on the principle of jet and resistance compound noise elimination, it has the advantages of large noise elimination and wide adaptive frequency band.
, targeted design (low pressure, medium pressure, sub-high pressure, high pressure, ultra-high pressure, subcritical.
Exhaust and evacuation of various boiler and pressure vessel pipelines with boundary and supercritical parameters),
The muffler is made of stainless steel (1Cr 18Ni9Ti, 12Cr 1MOV), which is convenient to manufacture and install.
The advantages of.
■ The products are mainly used for steam thermal equipment such as boilers and steam turbines in power generation departments.
Effectively eliminate the noise of steam emission. Steam emission from steam boilers and related thermal equipment
The noise emitted far exceeds the noise emitted by industrial enterprises in China.
The value specified in the health standard. (For example: gauge pressure 1kg/cm2 superheated steam.
When the steam is discharged into the atmosphere from the hole, its speed can reach 570-600 m/s.
For saturated steam, its speed can also reach 470-480 m/s, so that
When high-speed steam is discharged into the atmosphere, the speed of sound exceeds 340 m/s.
, so the noise is high). To this end, the company produced a practical model.
Steam muffler series. The noise elimination effect completely meets the noise hygiene requirements of industrial enterprises.
Standard "requirements.
1, boiler ignition exhaust muffler (TB type)
This muffler is designed in combination with the most reasonable silencing principle. high-pressure steam
After the primary flow control in the muffler, it enters the decompression body, and after large-volume expansion, it flows from
Low-pressure steam is ejected after it is formed. In this process, the internal energy of steam flow can be partially converted.
Sound energy of a certain frequency, although its noise is greatly weakened, often
Because the exhaust steam deviates from the design value, the noise is still higher than the standard value. for
In this paper, a double-layer sound insulation cover is designed outside the pressure reducer, based on
The spectral characteristics of the residual noise emitted by the buck main body are designed to effectively
Absorb residual noise. Users install according to requirements, and the total noise reduction can reach 36 ~
42 decibels.
2. Muffler for steam safety door (TA type)
For the safety doors of pressure equipment such as boilers, excessive noise should be avoided during exhaust.
Sound, but also should let the steam flow smoothly, for this reason, the common multistage throttling and before.
Small hole injection is not suitable for noise elimination, and this restriction has always been a safety door.
The difficulty of muffler design is also the reason why the muffler of safety door has poor noise elimination effect.
. The muffler of the utility model used for the safety door also adopts resistance, spray and resistance.
Based on the principle of noise elimination, large holes are used instead of small diameter flow control holes to expand the capacity.
Structurally, the resistance and resistance noise elimination mechanism are strengthened, and the ideal noise elimination effect is achieved.
Fruit.
3. Low pressure steam muffler (TD type)
Low-pressure boilers of 0. 13Mpa and below are widely used in various industrial and mining enterprises for power stations.
There are also a large number of low-pressure thermal equipment in the thermal system, such as back-pressure steam turbines.
Deaerator, auxiliary air extractor, steam turbine oil pump and boiler regularly discharge pollutants continuously.
Sewage discharge, etc. The exhaust pipe of the above equipment requires light structure and square installation.
Convenient muffler. According to different noise elimination objects, our company has designed special ones.
Deaerator series muffler, back pressure steam turbine series muffler and other series.
Muffler products can meet the requirements of users.
■ Order selection instructions
The muffler produced by our factory is imported according to the emission objects and requirements of users.
Carefully designed, for this reason, only the products meet the emission targets and parameters.
The maximum noise reduction effect can be obtained. Therefore, the following contents must be provided when ordering silencers.
Column information:
(1) Turbine model, boiler capacity, pressure and temperature;
(2) users (such as boiler superheater discharge or steam drum safety door)
Emissions, etc. );
(3) emission t/h;
(4) The diameter and wall thickness of the original exhaust pipe;
(5) Mufflers used for emergency exits shall be provided in addition to the above information.
Diameter of safety door and exhaust pipe;