Spencer can supply a wide array of air and gas handling options and integrate them with the primary Spencer equipment into a smoothly functioning system. The best way to approach this topic is methodically, thinking first about your application and its needs.
Here are some questions relating to application characteristics, your preferences and other factors for your evaluation.
What is the involved process? What are the gas characteristics? Is it hazardous, toxic, explosive, carcinogenic, flammable, corrosive or radioactive? How much leakage is permissible, in and out of the blower? What is the desired life expectancy of the blower? What is the blower budget? What are the ambient environmental conditions around the blower? Are there any applicable regulatory codes? Are there any special blower testing requirements? What accessory equipment and options do you want? Will you need electrical controls? Do you want a specific type of coupling between motor and blower? Do you need special drive arrangements such as belt drive, variable frequency drive or an alternative driver such as a diesel engine? For hermetic gas boosters, is the process gas compatible with the motor? Is the temperature low enough and the volume high enough to cool the motor?
Blower Options and Accessories
API Blowers and Bases
Spencer can supply blowers and bases which comply with specific API standards for petrochemical plants and refineries.
Any type of coupling may be specified, including:
This optional support method for high temperature blowers helps maintain coupling and piping alignment and reduces stress on seals and bearings during thermal expansion
Any blower can be custom-fitted with an acoustical wrap for sound attenuation. Acoustical wraps also provide thermal insulation for high temperature blowers and protect personnel from touching hot blower surfaces. They are easily removed and reinstalled for blower maintenance.
These are primary used on TEFC motors to reduce noise, often in conjunction with a sound wrap.
Free-standing sound curtains can be placed around Spencer machines.
Inlet Air Filter/Silencer
This dual-purpose accessory reduces intake noise while filtering incoming air.
Special Vibration Control
Each Spencer blower is balanced after assembly to a vibration tolerance appropriate for its design. When desired, we can use special balancing techniques to achieve a total amplitude of vibration at the bearing housings of less than one mil at 3600 RPM operation.
Spring Vibration Bases & Snubbers
These accessories provide blower protection from earthquakes and vibration.
Placed on blower inlets or vacuum producer outlets, weather caps protect the machine opening.
This accessory is a weldment consisting of two flat flanges joined to a length of tube, used as a spacer when mounting a check valve or blast gate to a blower.
Tubing and Fittings
Spencer makes these components in carbon steel, galvanized steel, stainless steel and aluminum in standard sizes from 2-1/8″ OD to 14″ OD for central vacuum cleaning systems, machine manifolds and air ductwork.
These include all blower system components, prewired and preplumbed, ready for connection to your electrical lines and process plumbing.
Motorized blast gates to automatically throttle a blower or gas booster to prevent motor overload
Sheet steel reducers
Rubber sleeve and clamp to join two sections of tubing or a machine outlet or inlet to a tubing run
Inlet air filters
Temperature and pressure gauges
Vibration isolating pads
EMBC – electronic modulating air bleed control
Bypass heat exchangers
Recirculation systems for low flow conditions
Spare parts such as bearings and gaskets
Spencer was the only company in the world able to quote this application, a high pressure (150 PSIG), high temperature (900°F discharge) gas booster (four bearing outboard design) used in a continuous sulfur scrubbing operation. This “green” application helps a power plant utilize America’s most prevalent energy source, high sulfur coal. Unusual aspects: skid-mounted “turnkey” delivery with blower completely prewired and plumbed for installation convenience; combination of oil and grease bearing lubrication; rigid wiring conduit designed for hazardous locations; separate control panel for double mechanical seals; water-cooled bearings
Spencer was the only bidder able to provide three gas booster/control packages for a uranium processing system. One package included this 250 HP four bearing outboard blower used to recover toxic fumes for purification. The corrosive conditions required 316SS extra-heavy construction with corrosion allowance. Unusual aspects: bearing vibration and temperature monitors with warning and shutdown alarms; water-cooled bearings with water flow failure alarms; Electronic Modulating Bleed Control (EMBC) for low flow recirculation protection; motor windings space heater to prevent condensation damage during shutdowns; connections of all electrical alarm and status indicators to the customer’s Motor Control Center and Programmable Logic Controllers.
Electrical Control Systems
Beyond basic start/stop functions, an electrical control system can monitor and adjust critical blower and process variables. If a blower or process cannot be maintained within established operational parameters, the control system can further provide alarm and shutdown functions.
Spencer makes 100% of its control systems, using our complete in-house capabilities for system design and construction. Control panels may be equipped with any desired level of sophistication including data acquisition instruments, remote process controls, multiple blower sequencers and other forms of control technology.
Blower protection options
Spencer offers many optional safety features that help protect your blower investment. Vibration, bearing temperature and low flow monitors, for example, alert personnel to potentially dangerous situations such as material buildup within the blower, a lack of bearing lubricant or an obstruction in the gas flow.
Blower and process monitors
Spencer monitoring systems incorporate sensors, transducers, gauges, alarms and shutdown circuitry to govern blower and process parameters such as:
Blower bearing temperature
Motor bearing temperature
Motor winding temperature
Blower inlet/outlet pressures
Air or gas flow level
Dissolved oxygen level
Water flow to water-cooled bearings
Purge gas flow to blower shaft seals
Blower and motor loading (low loads and overloads)