With the rapid development of society, our country has been inseparable from science and technology.
Now pneumatic butterfly valves are almost all over the world, and they are used in many places in our daily life. Over the years, pneumatic butterfly valve manufacturers have developed rapidly. More and more manufacturers are committed to pneumatic butterfly valves. In such a development situation, the strong are the final winners.
Shanghai Dongfeng pneumatic butterfly valve is made of pure natural live oil resistant nitrile butadiene. It is light and beautiful in shape and easy to install. It is suitable for the installation of fan coil, bellows, cabinet, motor, gas pipe, air pipe and other equipment in the pipeline support, which can effectively reduce the transmission of equipment and pipeline vibration to the floor, wall and other structures, It can effectively isolate the transmission of vibration and solid noise. It is also used on hoisting equipment with uneven centers. In today's society, it can be said that pneumatic butterfly valves exist all around us. Because in the environment we live in now, we can't do without technology and shock absorber.
Because they can benefit mankind. Test method of shock absorber: the shock absorption performance of shock absorber shall be evaluated through the shock absorption test. Damping test is usually carried out only when the shock absorber is newly designed and manufactured, and it is not necessary to test the shock absorber one by one after mass production; Only type test is needed.
However, the shock absorbers that are particularly important or must be adjusted in the shock absorption test to meet the technical requirements shall be tested one by one. The vibration reduction test should be carried out on the whole machine, so that the test conditions are the actual working conditions; The vibration reduction test can also be carried out on a special vibration reduction test bench, that is, the actual working conditions are simulated, the vibration source is artificially manufactured, and the difference between the shock absorber without the shock absorber and the shock absorber installed is compared to evaluate the advantages and disadvantages of the shock absorber. According to different situations, various vibration excitation methods can be used to artificially produce vibration sources, such as using eccentric wheel rotation to drive the slider to generate reciprocating displacement excitation, using centrifugal force generated by unbalanced rotor to excite vibration, and using compressed air blower to excite vibration.
Use loudspeakers to excite, use electromagnetic induction to excite, or use special vibration table to excite, etc. The parameters to be measured during vibration test include frequency, amplitude, velocity, acceleration, etc., and sometimes the stress or strain of some parts of the machine is measured. If the vibration law follows the sine function (such as the vibration caused by rotor imbalance), the speed and acceleration can be calculated as long as the amplitude and frequency are measured.