How to deal with the noise problem of old cars by pneumatic butterfly valve manufacturers
There are many people who own cars. They are too shy to buy a new car. They can also choose to buy a second-hand car. But how can we deal with the noise problem of second-hand cars! Pneumatic butterfly valve or a good choice! I will analyze the cause of noise for you!
Exhaust pipe noise: it belongs to the category of normal aging. For the exhaust pipe with a length of 10 years or 200000 km, the noise at the rear of the car body will be increased because the bottom of the car body is often exposed to acid and alkali mixture such as mud and water, or there is the possibility of air leakage due to corrosion, which can be heard clearly. The treatment method is to replace the whole or local exhaust pipe, and the noise can be eliminated immediately.
Noise of engine and its accessories: This is caused by normal wear of internal components of the engine due to age. If there has been an abnormal accident before, for example, the engine oil has leaked out and has not been found in time, or the antifreeze has leaked out. The engine with such experience will be more noisy, and its noise will be different regardless of the size of the accident. The treatment is to replace partial or all engine moving parts, such as connecting rod, connecting rod bush, piston and piston ring. It is also caused by incorrect or worn accessories such as some belts outside the engine.
Brake system noise: if the brake pads continue to be used after normal wear, the brake shoes will easily rub the brake disc (that is, the phenomenon of iron hitting the iron), which will cause a very harsh squeal when braking. The treatment is to change the brake pads (if the brake disc is worn, it should also be changed).
Noise of suspension system: although it belongs to the normal aging category, different users will have significantly different results. A large part is caused by the wear of hub bearings or the reduction of damping ability of damping fluid in pneumatic butterfly valves. There are also many examples of light leakage of shock absorber fluid. Since the shock absorption performance of the car depends on the combination of damping fluid and spring, the loss of damping fluid talent will significantly increase the noise. The treatment is to go to the car shop for repair, replace the hub bearing or pneumatic butterfly valve, etc.

With the continuous improvement of fabric materials, non-metallic contraction joints have been more and more applied to the entrances and exits of smoke removal, desulfurization, dust removal equipment, air heating, flow aid blower and other equipment in iron and steel plants, iron smelting plants, petrochemical plants, thermal power plants, cement plants and atomic power plants.
Especially for flue gas and hot air pipes, non-metallic contraction joints have unique advantages.
Now let's focus on the analysis of its differences:
The first common performance: it can compensate multi-dimensional directions in a variety of ways. There are more choices for metal compensators, such as square and round ones, which can solve the problem of low lateral displacement of metal square compensators.
The second performance: the outer layer of silicone cloth has a good sealing performance, especially the participation of fluorine tape and high temperature glass fiber cloth in the past makes our non-metallic shrink joint mention a new application level, which not only can prevent corrosion, but also has a better ability to withstand high temperature.
The third performance: compared with the metal compensator, its stiffness value is very small, the elastic reaction force is also very small, and there is no thrust.
Fourth performance: non-metallic contraction joints can not only play the role of compensation, but also can effectively isolate noise due to the fabric. It can also play a shock absorption role.
Fifth performance: large compensation and low cost. Therefore, it is a good choice for pipelines that can choose non-metallic compensators. The quality is largely due to foreign compensators, but the cost is more cost-effective than metal compensators.
Through careful analysis, we can see that there is a lot of non-metallic charm. How about it? I hope my analysis will give you some help in pipeline compensation. If there is something wrong with the central government or we have better and more discoveries, send off timely communication.