Muffler module of mining machine
Publish: 2021-05-22 02:03:19
1. Muffler is generally used in cars or guns to rece the noise of car exhaust pipe and the sound of guns shooting. In fact, it can only be said that it can be reced, but it can not be said that it can be completely eliminated. No muffler can be achieved unless there is no medium to transmit sound in a vacuum environment.
2. 1. Of course, it's good to have four acoustic enclosures. It's small, easy to move and has good sound insulation effect. 2. When equipped with sound insulation cover, it can be required to have maintenance space, but the price will rise accordingly. In addition, the sound insulation cover is molar and can be disassembled. When it is repaired without maintenance space, some moles can be opened for maintenance. 3. There is no influence on the air inlet and outlet after installing the sound insulation cover, and the inlet and outlet have been reserved in the design. Generally, roots fans are equipped with mufflers. Rotary fans should not be equipped with mufflers. Do you use roots fans or not? It is recommended that you directly go to the fan manufacturer to make noise enclosures. They are familiar with the size of fans. You can also find a professional noise enclosure factory to make it. As far as I know, there is no big brand of noise enclosure. Jingong noise enclosure is one of the most professional noise enclosures for fans. I do sound insulation cotton, our customers are doing all kinds of sound insulation equipment, if you want sound insulation cotton and sound insulation materials to find us.
3. Both Sysnoise and actran are software used to analyze noise. The founders of Sysnoise and actran are the same
Jean Pierre and Jean Louis realized that finite element technology and infinite element technology have broad prospects in the field of Computational Acoustics, so FFT company focused on the development of actran, a computational acoustics software based on finite element and infinite element technology, Today, when more and more computational acoustics software suppliers realize the leading position of finite element and infinite element technology in Computational Acoustics, FFT company has been working hard in this field for ten years, which makes FFT become the leader in the field of Computational Acoustics.
so actran will become the mainstream of noise analysis software
actran is the most perfect acoustic simulation software in the market. Based on the general technology of finite element and infinite element method, actran provides abundant element library, material library, boundary condition, solution configuration and solver. Actran is used by the most critical engineers, researchers and teachers to solve challenging vibration acoustics and flow acoustics problems. As the leader in Computational Acoustics, the advanced nature of ACTRAN is mainly embodied in four aspects: integrity ACTRAN contains many unique technical characteristics besides the other features of other acoustic software, such as: propagation of sound waves in heterogeneous moving bodies. The scale of actran's solution is increased ● including the simulation of reverberation and non reverberation space ● sound transmission and absorption through composite / sandwich structure ● engineering oriented excitation and boundary conditions, including: acoustic liner boundary conditions, diffuse sound field excitation, turbulent boundary layer excitation Actran is based on a well-known and fully validated numerical technique, the finite element method. Actran keeps internal consistency with other finite element programs and is easy to connect, combine and compare with other main CAE tools. Computational performance actran contains many special solvers, such as the Krylov solver in actran, which can rapidly calculate the frequency response function. It not only revolutionizes and greatly improves the computational efficiency, but also brings the following advantages: ● the speed of calculating the frequency response function is at least one order of magnitude faster than the traditional finite program. Near linear parallel speep. It can be used in both undamped and damped systems. Actran has seamless interface with NASTRAN, ABAQUS and ANSYS. Actran has fluent, star_ CD、Star_ The direct interface of CCM, powerflow, ensight and other CFD programs, as well as the general HDF format interface, are used to extract sound source and add heterogeneous fluid effect. Directly and seamlessly integrated with mainstream finite element pre-processing and post-processing tools, including I-DEAS master series, MSC. Patran and HyperMesh. Users can use the standard functions of these tools as well as actran dialog boxes and icon menus with the same style
actran mole:
actran acoustics is the foundation of all actran software series. It can efficiently simulate sound radiation and sound propagation in pipes and cavities. Typical applications include gearbox radiated noise, vehicle intake and exhaust noise, underwater sound propagation, and air conditioning system noise of aircraft, automobile and building. Actran vibroacoustics is a complete vibroacoustics simulation software. It provides abundant element library, material library and various engineering oriented boundary conditions. It can simulate complex problems such as vibration and noise, acoustic vibration coupling, acoustic fatigue and so on. Combined with actran aeroacoustics, it can couple and solve the most challenging vibration and flow noise coupling problems
actran for NASTRAN is an advanced vibration acoustic simulation software which contains all technical advantages of actran and NASTRAN. It is used to simulate the optimization of cabin decoration and all other acoustic vibration coupling problems of automobiles, airplanes and spacecrafts
actran TM actran TM is a professional software for analyzing the noise radiation of rotating machinery, optimizing the sound liner and other acoustic processing components. Typical applications include aircraft engine, pipe cooling system and helicopter turbine noise simulation
actran DGM uses discontinuous finite elements to solve linear Euler equations. It is used to simulate the noise propagation under complex flow conditions. Typical applications include turbine exhaust noise, large turbine inlet noise, etc
actran aeroacoustics is a professional turbulence noise simulation tool. That is to say, it can solve the external sound field (wing noise, rearview mirror noise, landing gear noise) and the internal sound field (HVAC internal noise, pipe flow noise)
actran VI is a pre-processing tool for all actran family procts. Actran series software has been widely used in aerospace, automobile, railway locomotive, ship, weapon, instrial machinery, household appliances and other instries, and has become the mainstream noise simulation software. Actran software is widely used in Europe. Airbus has been cooperating with actran for many years.
Jean Pierre and Jean Louis realized that finite element technology and infinite element technology have broad prospects in the field of Computational Acoustics, so FFT company focused on the development of actran, a computational acoustics software based on finite element and infinite element technology, Today, when more and more computational acoustics software suppliers realize the leading position of finite element and infinite element technology in Computational Acoustics, FFT company has been working hard in this field for ten years, which makes FFT become the leader in the field of Computational Acoustics.
so actran will become the mainstream of noise analysis software
actran is the most perfect acoustic simulation software in the market. Based on the general technology of finite element and infinite element method, actran provides abundant element library, material library, boundary condition, solution configuration and solver. Actran is used by the most critical engineers, researchers and teachers to solve challenging vibration acoustics and flow acoustics problems. As the leader in Computational Acoustics, the advanced nature of ACTRAN is mainly embodied in four aspects: integrity ACTRAN contains many unique technical characteristics besides the other features of other acoustic software, such as: propagation of sound waves in heterogeneous moving bodies. The scale of actran's solution is increased ● including the simulation of reverberation and non reverberation space ● sound transmission and absorption through composite / sandwich structure ● engineering oriented excitation and boundary conditions, including: acoustic liner boundary conditions, diffuse sound field excitation, turbulent boundary layer excitation Actran is based on a well-known and fully validated numerical technique, the finite element method. Actran keeps internal consistency with other finite element programs and is easy to connect, combine and compare with other main CAE tools. Computational performance actran contains many special solvers, such as the Krylov solver in actran, which can rapidly calculate the frequency response function. It not only revolutionizes and greatly improves the computational efficiency, but also brings the following advantages: ● the speed of calculating the frequency response function is at least one order of magnitude faster than the traditional finite program. Near linear parallel speep. It can be used in both undamped and damped systems. Actran has seamless interface with NASTRAN, ABAQUS and ANSYS. Actran has fluent, star_ CD、Star_ The direct interface of CCM, powerflow, ensight and other CFD programs, as well as the general HDF format interface, are used to extract sound source and add heterogeneous fluid effect. Directly and seamlessly integrated with mainstream finite element pre-processing and post-processing tools, including I-DEAS master series, MSC. Patran and HyperMesh. Users can use the standard functions of these tools as well as actran dialog boxes and icon menus with the same style
actran mole:
actran acoustics is the foundation of all actran software series. It can efficiently simulate sound radiation and sound propagation in pipes and cavities. Typical applications include gearbox radiated noise, vehicle intake and exhaust noise, underwater sound propagation, and air conditioning system noise of aircraft, automobile and building. Actran vibroacoustics is a complete vibroacoustics simulation software. It provides abundant element library, material library and various engineering oriented boundary conditions. It can simulate complex problems such as vibration and noise, acoustic vibration coupling, acoustic fatigue and so on. Combined with actran aeroacoustics, it can couple and solve the most challenging vibration and flow noise coupling problems
actran for NASTRAN is an advanced vibration acoustic simulation software which contains all technical advantages of actran and NASTRAN. It is used to simulate the optimization of cabin decoration and all other acoustic vibration coupling problems of automobiles, airplanes and spacecrafts
actran TM actran TM is a professional software for analyzing the noise radiation of rotating machinery, optimizing the sound liner and other acoustic processing components. Typical applications include aircraft engine, pipe cooling system and helicopter turbine noise simulation
actran DGM uses discontinuous finite elements to solve linear Euler equations. It is used to simulate the noise propagation under complex flow conditions. Typical applications include turbine exhaust noise, large turbine inlet noise, etc
actran aeroacoustics is a professional turbulence noise simulation tool. That is to say, it can solve the external sound field (wing noise, rearview mirror noise, landing gear noise) and the internal sound field (HVAC internal noise, pipe flow noise)
actran VI is a pre-processing tool for all actran family procts. Actran series software has been widely used in aerospace, automobile, railway locomotive, ship, weapon, instrial machinery, household appliances and other instries, and has become the mainstream noise simulation software. Actran software is widely used in Europe. Airbus has been cooperating with actran for many years.
4. There are two basic reasons for engine noise:
1. Excessive carbon deposition in engine
2. Improper use of engine oil or dirty oil< In addition, the noise of the engine is mostly caused by the abnormal noise of the engine:
1. The screw of the lower guard plate of the engine is loose. A common small fault is to tighten or adjust the screw of the engine lower guard plate
2. The engine claw pad is aging. The claw pad supports the engine and can only be replaced after aging
3. The plastic parts in the engine compartment are loose. For example, engine cover plate, intake pipe, etc. can be fastened
4. Abnormal noise of engine belt. Including power belt, generator belt, etc., belt aging or too loose, too tight will proce abnormal noise, replace or adjust the tightness
5. Engine knock. There is too much carbon in the engine or the fuel is not qualified. Clean the carbon deposit and change the fuel
6. Abnormal valve noise. Especially after cold driving, the valve will "rattle" and then the hot car will be OK, because the oil is deposited in the oil pan and the engine is not "pressed" in time when starting. However, if the valve rings all the time, it is necessary to consider changing the "thick" engine oil (please refer to "how to select the right engine oil" for how to select the engine oil)
7. Engine "backfire" fault. There will be a "poop poop" sound in the engine, mostly e to excessive carbon deposition on the valve or incorrect timing adjustment. Clean the carbon deposition on the valve and adjust the valve timing
8. The engine lacks cylinder. If one cylinder does not ignite, most of them are spark plug or ignition mole failure, just replace it
9. Abnormal bearing noise. There will be regular "buzzing" sound of bearing abnormal noise, such as engine tension pulley, idler, generator, etc., which can be solved by replacing relevant parts.
1. Excessive carbon deposition in engine
2. Improper use of engine oil or dirty oil< In addition, the noise of the engine is mostly caused by the abnormal noise of the engine:
1. The screw of the lower guard plate of the engine is loose. A common small fault is to tighten or adjust the screw of the engine lower guard plate
2. The engine claw pad is aging. The claw pad supports the engine and can only be replaced after aging
3. The plastic parts in the engine compartment are loose. For example, engine cover plate, intake pipe, etc. can be fastened
4. Abnormal noise of engine belt. Including power belt, generator belt, etc., belt aging or too loose, too tight will proce abnormal noise, replace or adjust the tightness
5. Engine knock. There is too much carbon in the engine or the fuel is not qualified. Clean the carbon deposit and change the fuel
6. Abnormal valve noise. Especially after cold driving, the valve will "rattle" and then the hot car will be OK, because the oil is deposited in the oil pan and the engine is not "pressed" in time when starting. However, if the valve rings all the time, it is necessary to consider changing the "thick" engine oil (please refer to "how to select the right engine oil" for how to select the engine oil)
7. Engine "backfire" fault. There will be a "poop poop" sound in the engine, mostly e to excessive carbon deposition on the valve or incorrect timing adjustment. Clean the carbon deposition on the valve and adjust the valve timing
8. The engine lacks cylinder. If one cylinder does not ignite, most of them are spark plug or ignition mole failure, just replace it
9. Abnormal bearing noise. There will be regular "buzzing" sound of bearing abnormal noise, such as engine tension pulley, idler, generator, etc., which can be solved by replacing relevant parts.
5. Jieshi blue urea solution: there are two kinds of crystallization of vehicle urea solution: one is that the water of urea solution is evaporated and the urea is crystallized; the other is that the by-proct of adhesive urea is formed when the urea solution participates in SCR system reaction. The most prone to crystallization is at the end of urea injection unit, flange, exhaust pipe and other places
when the vehicle urea solution crystallizes in the vehicle, the exhaust pipe of the engine will be partially or completely blocked, and the waste flow will be changed, the conversion rate will be reced, and the exhaust will also be affected. Urea can not be completely used, resulting in waste, the distribution of urea spray is also uneven, will eventually affect the jet mole nozzle blockage, high temperature exhaust, urea crystallization decomposition will also proce ammonia, resulting in 2 environmental pollution.
when the vehicle urea solution crystallizes in the vehicle, the exhaust pipe of the engine will be partially or completely blocked, and the waste flow will be changed, the conversion rate will be reced, and the exhaust will also be affected. Urea can not be completely used, resulting in waste, the distribution of urea spray is also uneven, will eventually affect the jet mole nozzle blockage, high temperature exhaust, urea crystallization decomposition will also proce ammonia, resulting in 2 environmental pollution.
6. That's because you are using a double tower dryer. The regeneration air consumption of the double tower dryer is very large, so when the regeneration exhaust gas is discharged, the sound will be very loud. The regeneration air consumption will consume a lot of energy, and it will be paid in the form of electricity charge of the air compressor
the main feature of Shenzhen jiahaowang mole energy-saving adsorption dryer is that it adopts a decentralized adsorption unit which divides the whole into parts
its core definition is: the adsorption unit composed of multiple pipe cavities can increase or decrease the capacity of the unit by increasing or decreasing the pipe cavities of the adsorption unit according to the required treatment capacity, so as to realize molarization. In the adsorption process, because the adsorption unit is composed of several pipe cavities, it is equivalent to several small adsorption towers adsorbing at the same time, so it can maintain a stable dew point of compressed air. Moreover, this kind of structure increases the surface area that can contact with compressed air several times, so the molecular sieve weight that needs to be filled will be reced exponentially, while the treatment effect will be increased exponentially, and the regeneration gas consumption will be greatly reced.
Proct Description
High quality air
it can obtain iso.8573.1 standard 1.1.1 quality grade compressed air, which is clean, oil-free and dry.
completely avoid corrosion and damage
prolong the service life of compressed air system and prevent proct damage.
compact structure and light weight
molar structure, size and weight less than half of the traditional dryer
low installation cost
it can be moved through a standard size door without renting a crane or changing the structure of the building.
simple and flexible installation
only the smallest space is needed.
molar design
flexible molar design facilitates system expansion and reces investment cost.
efficient
it can save energy as much as possible and save more than 80% of operation cost
low noise
rece noise pollution and provide a quiet operating environment
simple maintenance
it can rece the shutdown times of gas system.
the main feature of Shenzhen jiahaowang mole energy-saving adsorption dryer is that it adopts a decentralized adsorption unit which divides the whole into parts
its core definition is: the adsorption unit composed of multiple pipe cavities can increase or decrease the capacity of the unit by increasing or decreasing the pipe cavities of the adsorption unit according to the required treatment capacity, so as to realize molarization. In the adsorption process, because the adsorption unit is composed of several pipe cavities, it is equivalent to several small adsorption towers adsorbing at the same time, so it can maintain a stable dew point of compressed air. Moreover, this kind of structure increases the surface area that can contact with compressed air several times, so the molecular sieve weight that needs to be filled will be reced exponentially, while the treatment effect will be increased exponentially, and the regeneration gas consumption will be greatly reced.
Proct Description
High quality air
it can obtain iso.8573.1 standard 1.1.1 quality grade compressed air, which is clean, oil-free and dry.
completely avoid corrosion and damage
prolong the service life of compressed air system and prevent proct damage.
compact structure and light weight
molar structure, size and weight less than half of the traditional dryer
low installation cost
it can be moved through a standard size door without renting a crane or changing the structure of the building.
simple and flexible installation
only the smallest space is needed.
molar design
flexible molar design facilitates system expansion and reces investment cost.
efficient
it can save energy as much as possible and save more than 80% of operation cost
low noise
rece noise pollution and provide a quiet operating environment
simple maintenance
it can rece the shutdown times of gas system.
7. Certainly, and there are many manufacturers procing mufflers for M82. If the gun is installed, the gun barrel must be modified, and the process should be irreversible
no more nonsense, just look at the picture
http://www.gun-world.net/usa/barrett/m82/X50_ 1.jpg
http://www.gun-world.net/usa/barrett/m82/x50_ 2.jpg
http://www.gun-world.net/usa/barrett/m82/50Sup01.jpg
no more nonsense, just look at the picture
http://www.gun-world.net/usa/barrett/m82/X50_ 1.jpg
http://www.gun-world.net/usa/barrett/m82/x50_ 2.jpg
http://www.gun-world.net/usa/barrett/m82/50Sup01.jpg
8. The micro heat regeneration dryer generally consumes 7% of the proct gas to regenerate the adsorbent, and the sound is loud. The following steps should be tried:
1. Replace the muffler
2. If the replacement can not solve the problem, it is a design problem. If the treatment gas volume and the current dryer process can be further judged
hope to adopt.
1. Replace the muffler
2. If the replacement can not solve the problem, it is a design problem. If the treatment gas volume and the current dryer process can be further judged
hope to adopt.
9. Fire with silencers will not show red dots on enemy's mini map. But if you are close to the enemy, if you are wearing a 7.1 surround sound game headset on the opposite side, you can also hear the "chirp" sound of your shooting and locate you. As long as you install silencers, no one can see you on the mini map, unless you shoot with grenades or molar shotguns. Unless the opposite UAV or satellite is in the sky, or you're dropped by the Scout.
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