Choose the right wire rope isolators for your HVAC requirements

Are you in the process of installing HVAC equipment in your home or for commercial use? The equipment could include air-handling units, heating and cooling coils, variable speed drives, fan coil units, chiller units, condensing units, indoor units, and dedicated outdoor air systems. Most of the equipment are motorized and generate a huge amount of vibration. These vibrations are transmitted to the mounting frame or floor to the recipient area.

Taking care of vibrations:

The vibrations which are in the low frequency range are the major cause for structural fatigue and failure. The best way to prevent the transmission of vibrations is to make use of wire rope isolators between the HVAC equipment and the receiving structure. The wire rope mounts are very effective in blocking the vibrations in both the directions. It means that not only the vibrations from the HVAC equipment to the support are mitigated, but the other vibrations from the support are also blocked from travelling to the HVAC equipment. Thus, the wire isolators also protect the HVAC equipment from damage.

Handling space limitations:

If you are using the equipment inside the house and there is a limitation of space, you can go in for the compact wire rope isolators. They have a symmetrical design and provide a multi-axis isolation. Since they are small in size it is recommended to use separate compact wire rope isolators for each piece of equipment rather than for the whole HVAC system. The best part is that you can mount these cable isolators along any axis in the bottom or traverse position. That proves how versatile these wire rope vibration isolators are.

Simplicity of design:

The Andre HVAC wire rope isolators are very simple in design. They have the two primary components. The first one of these is a steel wire rope made up of multiple strands of high tensile steel wires braided together to give it strength and fatigue resistance properties. The other part is the aluminum alloy retaining bars. The wire rope is coiled through the set of the retainer bars and crimped using a patented design. When one has a look at the simple design of the wire rope mounts, it makes him wonder how it mitigates the vibrations so well.

Tackling harsh environments:

In case you are planning to mount the HVAC equipment in an area where there are chances of chemicals and oils coming in contact with the wire rope isolator for vibration damping, you can opt for the Enidine wire rope isolators. They not only handle harsh and corrosive atmospheres but also large amount of temperature variations also. Thus the Enidine wire rope isolator falls into the category of fit and forget wire rope vibration isolators.

The Andre HVAC wire rope isolators resolve the shock and vibration issue in virtually any application. They are especially suited for the HVAC equipment. The standard wire rope mount designs can be selected by the use of simple formulas, while the customized options are made available as per requirement.

Why does one need to worry about vibration noise control?

While building a machine one does not think much about the vibration and noise control in the beginning. All that an individual is worried about is ensuring that all the parts of the machine work together properly and runs smoothly. But once the machine is built, one needs to worry about these issues. There are a number of reasons to be concerned about and several ways to prevent the effects of vibration and noise of machinery.

One of the major reasons of concern about vibration and noise control is that, initial symptoms of vibration and noise problem in machine can lead to a complete breakdown. In certain cases when the machine works well, but if there is vibration between the machine parts, it may cause severe wear and tear. This can lead to a short life span of the machine causing a huge damage. 

If the machines don’t have vibration noise control in it, then one may have to bear the annoying noises that come from it when it runs. This isn’t always a huge concern, if noise level is within the frequency limits. But beyond a certain level if your machine makes noise then it could pose a great threat.

There are many ways to control vibration from noise in a machine. One of the best is to use isolation pads, mounts and vibration dampers offered by Andre HVAC. By installing this isolation and damping equipments one can keep the annoying noise and machine-wrecking vibrations out of the machine’s system. Damping equipments also has the ability to cancel the vibrations completely. There are chances of still having some vibration, but it won’t be nearly as bad without the isolation factored in it.

For years, engineers have designed and built new ways to control vibration. They have used springs, rubber pads, mounts and all sorts of other materials. These materials have the properties of isolating and controlling all kinds of vibration and noise. Also they last practically forever, due to which you don’t have to replace it frequently. They can also be designed as customized as per the application requirement and the vibration noise can be perfectly controlled. 

Hydraulic shock absorbers and its application

What are shock absorbers?

Shock absorbers are devices used for absorbing jolts and vibrations that is created in a machine. A shock absorber is a mechanical or hydraulic device designed to absorb and damp shock. This is done by converting the energy of the shock into another form of energy which is then dissipated. There are a number of shock absorbing materials like rubbers and polyurethanes that offer absorbing solutions to meet the specifications irrespective of its applications.

Why are shock absorbers essential?

Unwanted mechanical energy creates vibration, shock or noise and can pose a serious problem within mechanical systems. Finding the right shock absorbing material is extremely critical in developing an effective and efficient design.

Shock is a major cause of damage and failure in mechanical equipments and especially in case of electronic devices. Shock can be described as a short-duration event with large magnitude acceleration. A shock absorbing material needs to be introduced in a design so as to help the energy from the impact of transfer of shock from the surface into the material. By doing so, you prevent the internal components from getting damaged. A common cause of damage to any mechanical device is the G level it experiences. G level is determined by the drop height and rebound.

Hydraulic shock absorbers and their application

Hydraulic shock absorbers are equipments designed for the purpose of dampening rotator liner and other movement configuration. These hydraulic shock absorbers are used in a variety of applications like automobile, agricultural, aircrafts and many industrial applications as well. Large hydraulics is used in structural engineering’s like in buildings and industrial equipments.

Selection of a hydraulic absorber

In order to determine the right hydraulic shock absorber, one needs to understand the dynamic and static requirement of mechanical system. It is essential to know the energy input requirements to know the velocity of the shock absorb device for the shock absorbing device to wok accurately. One always needs to determine the following things before selecting the device.

·         velocity and stroke of the application

·         static and dynamic energy in a hydraulic shock absorber

·         installation and configuration of shock absorbers required

·         the kinetic energy

·         declaration of shock absorber size etc. 

Anti Vibration Mountings and their benefits

What are Anti Vibration Mountings?

Anti vibration mountings or anti vibration mounts absorb the vibrations produced by industrial or mechanical equipments. These specific mounting devices are also known as vibration isolation devices, vibration isolation mountings and isolator mountings, which are manufactured by Andre HVAC in conformation to the standards and guidelines of the industry. By absorbing the vibrations in the machine, these anti vibration mountings significantly reduce or limit the effect of vibration on the running engine, thereby ensuring smooth functioning.

These anti vibration mountings are specially designed and manufactured to minimize the potential annoying noise during the functioning of the machines and industrial equipment or motor. There is a wide variety of vibration isolator mounts that are available in the market and are made from superior quality material like rubber and springs that are widely used in various industrial applications, HVAC application, standby power generations and much more. 

Why are anti vibration mountings Important?

Anti vibration mountings also popularly known as vibration isolation are very critical in industrial machine and application. They play a significant role like any other metal and rubber components of the machine. If these machines and application run without these mountings, then the vibrations caused from it would pose a great threat to machine life.  Such vibrations not only damage various machine parts but can also lead to a complete breakdown or failure of the entire machine. Therefore a proper anti vibration mountings not only assists in smooth functioning of machines but also prevents the bad effects of vibrations.

What are the benefits of Anti vibration Mountings? 

The two very obvious benefits of anti vibrationmountings for industrial and mechanical equipments are as follows:

• Anti vibration mounting help in significant reduction of noise from the machines.  This allows the workers to work without any problem and having to bear the annoying noise.
• The vibrations caused in a machine can negatively impact it by causing loosening or malfunctioning of parts and even ultimately leading to an overall failure of the entire machine. Hence, anti vibration mounts are very important. 

What is active and passive vibration isolation system?

Vibration Isolation

Vibration isolation can be described as process that involves the correct use of a resilient mounting or isolation material to provide maximum isolation between a machine and its supporting structure. Through this a condition should be achieved where in the amount of vibration transmitted from, or to, the machine is at a bearable level. In order to achieve maximum and efficient vibration isolation it requires a resilient support offering sufficient elasticity so that the natural frequency of isolation machine is lower than the high vibration frequency. Also damping of vibration provides energy dissipation in a vibration system and there by controls the potential high levels of transient vibration and shock. Vibrations can be isolated from equipment using active or passive technology. In case of activevibration isolation method equal and opposite forces are created electronically to remove the unwanted vibration whereas in passive method, isolation is achieved by limiting the amount of vibration and noise transmission.

 Active Shock and Vibration Isolation

Determining whether you need an active isolation system completely depends on whether you have a vibration or settling a time critical application. In both the cases one needs to know the systems susceptibility to noise and vibration. In order to reduce the effects of vibration and shock to the attached machines, nearby people and the building structure a foundation block for machine should be isolated. Controlling the source of a structural disturbance is called as an active isolation method. Active shock and vibration isolation are used in applications like power presses, pumps, drop hammers, forging machines, metal forming and cutting machines, compressors, engines and test rigs, printing machines rolling roads etc.

 Passive Shock and Vibration Isolation

In passive shock and vibration isolation method isolation is achieved by limiting the amount of vibration and noise transmission by using mechanical equipments which dissipates the vibration before it gets to the item to be isolated. Passive methods sometimes involve electromechanical controls for adjusting the system, but the isolation mechanism itself is passive. Passive systems may use springs, fluids, and rubber pads or even use negative-stiffness components. As compared to Active isolation pads Passive systems generally cost less and are relatively much simpler reliable and safer to use.   One of the most basic and the most commonly used passive isolators are spring isolators that are placed between the surface transmitting shock or vibration and the item to be isolated. The spring opposes the force on it and absorbs some energy of vibration. The passive shock and vibration isolators are used in applications like machining centers, grinding machines, measuring and inspection equipment etc.