Tham khảo tài liệu 'noise and vibration control episode 8', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | TM 5-805-4 AFJMAN 32-1090 tions from this assembly to other equipment should contain flexible connections see para B-5b . d. Rotary-screw-compressor refrigeration equip ment. The recommended vibration isolation for this equipment are given in table 8-4. e. Centrifugal-compressor refrigeration equipment. The recommended vibration isolation for this equipment including the drive unit and the condenser and chiller tanks are given in table 8-5. f. Absorption-type refrigeration equipment. The recommended vibration isolation for this equipment are given in table 8-6. g. Boilers. The recommended vibration isolation for boilers are given in table 8-7. These apply for boilers with integrally attached blowers. Table 8-2 should be followed for the support of blowers that are not directly mounted on the boiler. A flexible connection or a thermal expansion joint should be installed in the exhaust breaching between the boiler and the exhaust stack. h. Steam values. Steam valves are usually supported entirely on their pipes paragraph 8-5a should be applied to the resilient support of steam piping including steam valves. i. Cooling towers. The recommended vibration isolation for propeller-type cooling towers are given in table 8-8. Additional for the installation are given in paragraph 8-3f which describes the Type V mounting assembly. The recommended vibration isolation for centrifugal-fan cooling towers are given in table 8-9. j. Motor-pump assemblies. Recommended vibration isolation for motor-pump units are given in table 8-10. Electrical connections to the motors should be made with long floppy lengths of flexible armored cable and piping should be resil-iently supported. For most situations a good isolation mounting of the piping will overcome the need for flexible connections in the pipe. An important function of the concrete inertia block Type II mounting is its stabilizing effect against undue bouncing of the pump assembly at the instant of starting. This gives better .
