Company details for:

Flo-Dyne Controls UK Ltd

Submit press release

(1)

Unit 4,
Summerleys Business Centre,
Summerleys Road,
Princes Risborough,
Buckinghamshire,
HP27 9EQ,
United Kingdom

Quick Links:

Products

Surge Tank Options

The purpose of a surge control tank is to provide a pre-determined amount of gas (often air) and liquid (often water) at the moment a surge event occurs. The air and water volumes, normally calculated by a hydraulic study which examines the hydraulics for the whole pipe system, are chosen to mitigate the transient pressures during a surge event. When low pressures occur in the connected piping the air in the tank will expand pushing the water into the system to mitigate low pressures, when high pressures arise, the air in tank is compressed and acts like a shock absorber to reduce the magnitude of the high pressures.

Bladder Tanks

Bladder tanks are usually supplied in one of two configurations and are used to reduce pressure surges in pipelines.

Compressor Tanks

Surge tanks are commonly arranged with a compressor, or compressors, to provide additional air in to the tank if the liquid level rises above the normal condition. The change in level is detected by a level instrument, which may be a simple bypass level gauge containing a magnetic float which rises and falls with the liquid level activating magnetically sensitive switches attached to the level gauge or a more advanced level instrument, such as a radar or ultrasonic level detection instrument.

Control Systems for Surge Tanks

Many surge tanks are supplied with a control system to manage the air/gas cushion in the tank and ensure that it is maintained correctly to provide adequate compression and expansion as will have been determined to be necessary to protect the pumped main from excessive high and low pressures.

The control system will be constructed in such a way that it will manage and correct for absorption of the air/gas cushion by the liquid in the tank, which will tend to cause the liquid level to rise, and out gassing from the liquid in the tank which will tend to cause the liquid level in the tank to fall.

Simple Diffuser Silencers

The Flo-Dyne Controls HUSH PUP is a non-packed, reactive silencer. It works by expanding the incoming flow through many small holes. This expansion creates a reduction and frequency shift in the vent noise. By correct selection of hole size, spacing and pattern this reduction can be optimized to produce an overall quieting. This simple, yet effective silencing concept has been tested and proven in over thousands of applications as a component part of Flo-Dyne Controls vent and in-line silencers.

Steam Vent Silencers

Release of steam to atmosphere creates noise which is dangerous to plant personnel and is environmentally unacceptable.

The steam may be released from either low pressure (LP steam vent silencer) of high pressure (HP steam vent silencer) as part of boiler start up system, a bypass vent or a safety relief valve vent system.

In each case Flo-Dyne offer the most economical approach by optimizing silencer design to produce a guaranteed solution through selection of silencer pressure drop and flow velocities appropriate to the duty.

Atmospheric Vent Silencers

ATMOSPHERIC VENT SILENCERS - STEAM, AIR, or GASES

Atmospheric vent silencers are used to control the noise created when steam, air, natural gas, nitorgen, oxygen or other process gases are vented (blown off) from a high pressure to atmosphere. At such times high noise levels which are dangerous to plant personnel and may be environmentally unacceptable are generated.

Safety Relief Valve Vent Silencers

Unexpected release of steam or gas to atmosphere from a safety relief valve creates noise which is dangerous to plant personnel and is environmentally unacceptable.

The gas or steam released from either low pressure (LP steam vent silencer) or high pressure (HP steam vent silencer) safety relief valve will normally result in very high noise levels, often more than 150 dB(A) at 1 metre, which, as well as being dangerous to personnel, can result in acoustic fatigue in the pipework or equipment that is immediately downstream of the valve.

In-Line Diffusers

High pressure drop across a valve creates excessive noise and leads to deterioration of the valve components. The Flo-Dyne Gas Diffuser Silencer is designed to share pressure drop with the valve, thereby substantially reducing this noise and wear.

To accomplish this pressure reduction the diffuser is designed to pass the flow through many small holes. Correct hole size and spacing are critical to diffuser performance. It is also important to match the diffuser flow capabilities to the individual system requirements. Flo-Dyne Controls custom design each diffuser for the particular valve and piping system it is to be used with.

Control Valve Silencers

In-line control valves or regulators often generate high levels of noise that is radiated by the following pipework.

Typical measures to combat this pipework radiated noise include acoustic insulation and quiet trims for valves. Both of these options can be expensive and in the case of acoustic insulation introduce an ongoing maintenance cost as the integrity of the insulation may deteriorate with time.

Compressor Silencers

Compressor silencers and inline compressors silencers are often specified for centrifugal and axial compressors which create broad spectrum noise with peaks at the blade passing frequencies. In addition many piping systems suffer from propagation of low frequency noise both within the gas stream and along the pipewall, which if not effectively attenuated can result in the acoustic performance of the silencer being compromised. The custom designed Flo-Dyne compressor inline silencer will treat these special noise problems to give a highly effective silencing solution.

Blower Silencers

Lobe type and multi-vane compressors generate high-energy noise levels at the fundamental and initial harmonic frequencies. With no absorptive pack, rugged construction and high quality materials, this multi-chamber design is tuned to handle these frequencies and is very effective in reducing tonal radiation from the pipe work connected to these machines.

Exhauster Silencers

Discharge Dampeners

DISCHARGE PULSATION DAMPENER - LIQUID FILLED

Pulsation dampeners are often necessary for multi-plunger high pressure reciprocating pumps which produce damaging levels of pulsation and vibration. These forces can be significantly reduced by the Flo-Dyne non-charged maintenance-free pulsation dampener which is completely filled with the pumped liquid. Our unique spherical in-line design results in optimized low weight and cost and is ideal where rubber bladder or metallic diaphragm types cannot be applied.

Suction Dampeners

Reciprocating pumps often suffer from pulsation problems on both the suction and discharge side. Many of the problems can be traced to poor suction conditions where the pressure at the inlet to the pump is less than that required by the pump manufacturer.

Surge Analysis

Surge analysis is needed to prevent pressure surges in pipelines which can occur in a hydraulic system when the flow in a pipeline is stopped too quickly. When a valve closes or a pump stops the water or oil or other fluid in a hydraulic system will attempt to continue flowing. This will cause pipeline pressure transients which can result in very high internal pressures inside the pipe, which in turn can damage equipment or even cause the pipe to fail.

Acoustic Filters

Many high speed multi-plunger pumps create tones and pulses that can be harmful to the piping system and be extremely annoying.

Typical applications include multi-plunger hydraulic pumps, gear pumps and refrigeration compressors.

Pulsation Analysis to API674

Pulsation analysis is required to examine the pulsation levels in suction and discharge pipework for positive displacement pumps on liquid duties. Analysis is undertaken to API674 standard to insure the smooth running of pumps and the vibration free operation of pipework.

Gas Pulsation Analysis to AP1618

Gas pulsation analysis is required to examine the pulsation levels in suction and discharge pipework for positive displacement compressors on gas duties. Analysis is undertaken to API618 standard to ensure the smooth running of the compressors and the vibration free operation of pipework.

Gas Pulsation Dampeners

Using a positive displacement gas compressor to raise the pressure of a gas stream will often generate pressure pulsations at the suction and discharge connections of the machine being used. If these pressure pulsations are of a high level and are allowed to enter the connected pipework, then it is possible for that pipework to start vibrating, which if the vibration is severe can result in mechanical failure of the pipe materials.
Guidance on the allowable pressure pulsation levels is given in API618 together with the requirements for theoretical analysis.

About us

Flo-Dyne Controls UK Ltd have been European leaders in the supply of noise and pulsation equipment since 1982. We are a British owned company with a wealth of unrivalled knowledge and experience in all areas of noise and pulsation control.

Flo-Dyne also have a subsidiary in India offering the same services and products as our UK parent company. We specialise in the design and supply of customised solutions for steam vent silencers, atmospheric vent silencers, liquid pulsation dampeners & surge tanks and their controls.

Flo-Dyne Design & Manufacture:

Vent & In-Line Silencers
Atmospheric vent silencers to reduce noise from the release of air, steam, and other high-pressure gases.

Pulsation Dampeners
Maintenance-free liquid-filled pulsation dampeners for positive displacement liquid power pumps.

Surge Tanks, Expansion Tanks & Bladder Tanks
Bladder tanks for managing surges and pressure spikes in pipelines.

Noise & Vibration Measurement
On-site measurement of noise and vibration levels for exhausts, atmospheric vents, compressors, and pump lines/pipework.

API674 Pulsation Analysis & Pulsation Measurement
On-site measurement of pressure pulsation and vibration, along with API674 pressure pulsation analysis for reciprocating pumps.

Pipeline Surge Analysis & Surge Pressure Measurement
Transient pressure analysis and measurement for all types of liquid pipelines, ranging from drinking water to hydrocarbons.

Our solutions will reduce the noise, vibration and pulsations generated by the movement of gases and liquids caused by changes in pressure.

Flo-Dyne serve Europe, India, Asia, Australia & North & South America. All products fully comply with ISO 9001 standards and a CE mark will be applied when required.

Uncoded equipment is manufactured to high standards here in the UK. Products can be made in a wide variety of materials including ordinary carbon steels and duplex stainless steels.

We have a cost effective solution for guaranteed results in the gas, water, power, chemical and process industries.

Flo-Dyne use sophisticated computer programmes enabling us to design an individual piece of equipment for every customer.

View Website

Images

Reviews

Request a Quote

Visit website