Shock absorbers, spring damper diagram, Huaneng pipeline equipment

Our shock absorber damping noise control technology research in recent years has made considerable progress, test and analysis of the technology has been greatly improved, Stations of medium-sized industrial production areas have generally used precision sound level meter, noise Statistical analyzer or automatic monitor, on a regular basis, from time to time on a wide range of industrial measuring points more quickly with vibration dampers, continuous on-site monitoring, to provide a scientific basis for noise management of industrial equipment. After years of promotion and application of noise reduction, sound absorption, sound insulation, vibration isolation and damping spring shock absorbers and other conventional treatment technology in the Ministry of Industry has been popular. Different industries according to their production process and equipment characteristics, has accumulated successful experience. Low-noise equipment development technology breakthrough, noise control equipment devices, the rapid formation of a new industry has begun to take shape, in noise control and pollution prevention of the growing ranks of professional and technical personnel. Our many universities, scientific research and design institutes and industrial and mining enterprises also carried out to reduce the noise damping products research and practice, in-depth analysis of various noise sources vocal mechanism and transmission routes, such as the successful development and production of spring Save shock absorbers, adjustable damping shock absorbers and more than 20 kinds of low-noise products, the emergence of new low-noise axial fan, low noise centrifugal fan, low-noise blower apparatus according to market on this device. Noise control is also reflected in the development of enterprise management, China as early as in the 1970s to protect the environment will be established as a basic national policy, and to develop a variety of environmental planning. In recent years, governments at all levels and to establish a soil fertility and improve the environmental management structure, environmental monitoring and management systems, and environmental protection product quality supervision and inspection system, 1996 also enacted industrial equipment Noise Control Act and a variety of noise and vibration limits for standard and measurement methods, the use of spring-damper handle noise in the process according to the law, a standard to follow. As China's national economic development and science and technology continues to improve, noise control technology will have greater development. Aerodynamic noise than other parts of the radiated noise from the fan intake and exhaust ports of radiation is higher 20dB & lt; A, control the blower noise damping spring shock absorber should be installed first on the intake pipes and exhaust pipes. General fan, spring shock absorber damping can be resistive sheet type, folded plate, honeycomb and composite impedance; large blower exhaust noise damping spring shock absorber can be designed to throttle down, holes and in the form of structural holes and resistive compound. Fan inlet and exhaust ports after installation of the spring vibration dampers, still radiated noise from the fan casing, tubing, and other parts of the frame and the motor, the entire fan noise can be reduced by 10 a 20dB & lt; A). If further noise reduction, can sweep the blast sweep L L group enclosed in a sealed cover, and add vibration in the seat under cover. In order to solve the inner cover and the motor cooling ventilation can be installed in the hood opening and damping spring shock absorbers.