All modern buildings, malls and industrial complexes make use of the spring isolation hangers for suspension of equipment associated with HVAC, fluid transfer, and any other moving parts. The rotating and reciprocating parts generate vibrations which are transmitted to the surroundings and structural members. It is the spring type vibration isolators that dampen these vibrations and prevent the transmission to the supporting structure or piping. The spring deflects against the load both in the static and dynamic conditions and the elastomer element absorbs the vibrations.
Spring hangers for pipe: All metals have a coefficient of thermal expansion and hence they expand when heated. The metallic pipes which are used to transfer fluids in an industry will undergo expansions and contraction depending on the temperature of the fluid that they carry. If the pipes are put on rigid supports they are likely to be damaged and deformed permanently because they are unable to absorb the force exerted by the pipe when it expands. The variable spring hangers, on the other hand, absorb these forces through deflection of the spring. Also, the spring hangers for pipe allow for an angular movement of 30 degrees from the support point. The pipe thus gets the freedom to expand without much restriction and comes back to its original position when it contracts on cooling.
- The spring hanger for pipe comprises a steel housing, high deflection spring, and an elastomer element.
- The riveted plate on the vibration hanger carries the pre-set factory values.
- The installation position is indicated on the travel scale.
- The hanger spring’s travel scale also indicates the hot and cold positions. The deflection that happens due to the weight of the pipe in the normal state is called the cold position. The vertical displacement of the pipe when it is carrying the fluid in the hot condition is earmarked as the hot position.
- The marking is done through blocking pieces which can be removed and reinserted in the position as per requirement.
- Adequate corrosion resistance is provided by galvanizing the vibration isolation hangers.
Spring isolators for HVAC: The heating ventilation and air conditioning equipment and its ducting is almost an essential part of the residential and commercial buildings, industrial complexes and malls etc. As per the regulations, the air conditioning equipment is required to be put on the top of the buildings. The air conditioners and air handling units etc. can be mounted using the vibration damping mounts. These are simple elastomer pads with threaded metallic inserts where the equipment can be mounted and bolted in position. In case the air conditioner is to be suspended from the ceiling the spring isolators for HVAC can be used.
The ducting for the HVAC is spread to the various floors in the building and is normally concealed in the false ceiling of each floor. Since the ducting is attached to the HVAC equipment, the vibrations from the moving parts are transmitted to it as well. The spring vibration isolators HVAC become an important tool for preventing vibrations from getting transmitted from the ducting to the supporting structure. In the absence of spring isolation, the noise generated by the vibrating ducts and supporting structure would pollute the working environment.
The structure of a spring isolator: The spring vibration isolators have a simple structure. A metal strip is bent to form a rectangular housing. The housing is attached to the ceiling or support through a rod. The elastomer element prevents the metal to metal contact and dampens the vibrations. The material of the elastomer is weather resistant and can withstand harsh environments also if required. The spring vibration isolators allow for certain construction anomalies by accepting 30-degree variation in the suspension rod. This is possible because of a large diameter hole in the bracket. The spring element deflects based on its load bearing capacity and the spring isolation hangers are rated accordingly. In general, the springs are rated for one-inch deflection.
Andre HVAC International Inc. is in the field of anti-vibration products for more than a decade. It caters to the specific requirements of the clients by providing them with the right kind of solutions. A wide variety of spring hangers is available to suit the requirements of the clients for their HVAC and utility piping suspension requirements. The products perform to the client’s satisfaction and require the minimum maintenance. Support is available for making the right selection of the anti-vibration products for all your needs.