Ata Mixer
Ata Mixer
Check out this page if you are looking for Ata Mixer
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 OSP ATA Road Tour Flight Case for PreSonus Studiolive 2442 Mixer PRE 2442 ATA  US $229.99
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 OSP Road Tour ATA Flight Case for Presonus StudioLive 2442 Digital Mixer US $229.99
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 19 RACK MOUNT MIXER 2 LARGE CD GLIDE LAPTOP ATA COFFIN FLIGHT CASE DJ PRO AUDIO US $199.99
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 Odyssey FRTS4 Ata Case For Traktor Kontrol S4 Single DJ Mixer Case New US $99.99
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 OSP ATA Road Tour Flight Case for PreSonus Studiolive 1642 Mixer PRE 1642 ATA US $199.99
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 OSP Road Tour ATA Flight Case for Presonus StudioLive 1642 Digital Mixer US $199.99
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 VESTAX VCI 400 PRO DJ MIXER W MIDI USB AND FREE XS VMS4 LT 300 ATA FLIGHT CASE US $999.00
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 ATA road flight tour case for Yamaha LS9 32 ch channel live sound digital Mixer US $249.99
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 ATA road flight case for Allen Heath live console GL2400 24 ch channel Mixer US $209.99
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 GATOR CASES G MIX 17X18 NEW MOLDED PE ATA MIXER CASE US $154.99
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 ATA flight road case mixer amp amplifier combo effects rack rail rackmount table US $439.99
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 Pro DJ Coffin ATA flight road Case for 2 Pioneer CDJ1000 players DJM600 Mixer US $329.99
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 GATOR G TOUR YAMLS9 NEW DJ EQUIPMENT RECORDING ATA WOOD FLIGHT MIXER CASE US $499.99
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 Odyssey FZ10MIX ATA Flight Zone 10 DJ Mixer Case US $119.99
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 OSP Pro ATA Road Tour Flight Case for Yamaha LS9 32 Channel Mixer US $249.99
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 Odyssey FZAPC40 Ata Road Case For Akai APC40 Single DJ Mixer Case US $93.74
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 Odyssey FZAPC40 Ata Road Case For Akai APC40 Single DJ Mixer Case New US $99.99
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 SKB SKB 3423 ATA Mixer Safe 34 x 23 Universal Case US $384.99
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 4U MIXER COMBO ROAD READY HEAVY DUTY MOBILE DJ PA ATA FLIGHT CASE 8U SLANT US $135.00
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 2 CD 19 RACK MOUNT MIXER GLIDE LAPTOP ATA COFFIN FLIGHT CASE DJ AUDIO US $220.00
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 Odyssey FRRMX Ata Case For Hercules Rmx Single DJ Mixer Case Used US $89.99
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 Odyssey FRVMS4 Ata Case For American Audio VMS4 Single DJ Mixer Case US $93.74
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 Odyssey FRVMS4 Ata Case For American Audio VMS4 Single DJ Mixer Case New US $99.99
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 Odyssey FZBM10WBL Flight Ready ATA DJ Turntable Mixer Battle Mode Case NEW US $239.00
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 Odyssey ATA Black Label Coffin for Laptop Two CD Players and DJ Mixer US $429.99
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 ODYSSEY CASES FZCFX12 NEW FLIGHT ZONE MACKIE CFX12MKII DJ SOUND MIXER ATA CASE US $139.99
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 8U MIXER COMBO ROAD READY HEAVY DUTY MOBILE DJ PA ATA FLIGHT CASE 8U SLANT US $149.99
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 2U MIXER COMBO ROAD READY HEAVY DUTY DJ PA ATA FLIGHT CASE 8U SLANT US $125.00
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 SKB SKB 4031 ATA Mixer Safe 40 x 31 Universal Case US $419.99
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 SKB 1SKB19 P12 12U Pop Up Rackmount ATA Mixer Case NEW WIRELESSSOUNDS US $269.99
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 Odyssey FRDNMC6000 Ata Case For Denon DN MC6000 Single DJ Mixer Case New US $119.99
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 4U MIXER COMBO ROADY READY HEAVY DUTY DJ PA ATA FLIGHT CASE 8U SLANT US $155.00
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 2U MIXER COMBO ROADY READY HEAVY DUTY DJ PA ATA FLIGHT CASE 8U SLANT US $145.00
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 NEW Odyssey FZGS10MIX MIXER CASE ATA FLIGHT DUAL GLIDE LAPTOP AND SERATO SHELF US $174.95
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 SKB 1SKB 4031 ATA Universal Mixer Board Safe Case 40 X 231 NEW WIRELESSSOUNDS US $439.99
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 SKB 1SKB 2219P ATA Rack Mount Pop Up Mixer Case NEW WIRELESSSOUNDS US $229.99
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 SKB 1SKB 1615 ATA Small Mini Mixer Case NEW WIRELESSSOUNDS US $169.99
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 New Odyssey FR10CDIWE ATA Rolling Case Flight Ready 2 CD Players10 Mixer US $193.98
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 ODYSSEY CASES FZGS10MIX NEW FLIGHT ZONE GLIDE STYLE 10 INCH DJ MIXER ATA CASE US $179.99
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 Odyssey Coffin 2Lg CD Players 110In Mxr ATA 10 Inch DJ Mixer Coffin US $274.99
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Mechanical seal support systems
A mechanical seal support system may facilitate feeding barrier fluid to a mechanical seal. A predetermined difference in pressure between the barrier fluid at a position before and after passage through the seal is detected. The flow of barrier fluid to the seal may be reduced when the predetermined pressure difference is detected.
A seal support system comprises of a vessel or tank, which generally contains a volume of fluid. The vessel is piped to a sealing device on a pump, mixer or item of rotating equipment. Generally a return pipe is lead back to the vessel from thesealing device, hence closing the "loop". This allows the fluid, contained in the vessel, to enter and exit the sealing device. Such fluid is generally chosen so that it lubricates and cools the components within the sealing device, whilst beingcompatible with the process fluid.
The industry term for the fluid contained within the vessel, is barrier or buffer fluid.
Mechanical seals generate a tremendous amount of heat due to friction as the seal faces rub against each other. In applications where small heat loads need to be removed, it is common to use a small vessel, which has a seal supply port and aseal return port built into it.
This vessel is usually placed higher than the mechanical seal, and is piped in such a way that the seal supply port is situated at the bottom of the vessel, and the seal return port further up the vessel. This ensures that when the vessel isfull of fluid and is piped to the seal, the colder fluid is fed to the mechanical seal, and is warmed up by the seal.
This fluid then `rises` back up into the vessel, and hence a `thermal loop` is created. This effect is commonly termed the `thermosyphon effect`. The fluid in the vessel then cools to the atmosphere and the level of cooling can be increased byfactors such as surface area, the use of finned tubing, passing wind over the vessel etc.
However, in some applications the mechanical seal generates too much heat for a thermosyphon system to dissipate. This can be due to a number of factors such as: high heat transfer from the process fluid to the barrier fluid, large mechanicalseal sizes, high speed, hard seal faces and high ambient temperatures.
In this case, a forced circulation system may be employed. This type of system ensures that barrier fluid is forced through the seal from a vessel using a pump and motor set and then back into the tank where the barrier fluid cools to theatmosphere.
The AESSEAL PUMPPAC? is a system which performs this task, and has the ability to pressurise the barrier fluid being supplied to the mechanical seal, ensuing that if there is any leakage across the seal face, it is always the compatible andsafe barrier fluid into the product, rather than the product (which may be hazardous to the environment) into the atmosphere/vessel.
It is recommended to set the pressure of the barrier fluid 1 bar above that of the process fluid for this specific reason.
As the mechanical seal wears, the seal begins to `leak` more barrier fluid into the product, however the PUMPPAC? system ensures that the pressure of the barrier fluid supplied to the mechanical seal remains constant.
However, should a mechanical seal eventually fail the PUMPPAC? system continues supplying oil into the product, hence `watering down` or contaminating the product, which may lead to a product being wasted.
The PUMPPAC? system may also be used with a double seal, i.e. it can support both the in-board and out-board seal faces. If an in-board seal failure were to occur, this would lead to the same scenario as previously described.
The modular concept of the PUMPPAC? system ensures that a level switch may be added to the vessel, which would warn an operator of too much loss of fluid. Should the operator need to know that the mechanical seal had failed instantly, themodular concept of the PUMPPAC? system ensures that a pressure switch may be fitted, which would warn an operator of loss in pressure due to a major leak in the mechanical seal.
If an out-board seal failure were to occur, the standard PUMPPAC? system would continue pumping the fluid through the seal, but due to the damaged out-board faces, this fluid would then be ejected into the atmosphere. This would continue tooccur until the pump was either switched off, or until the vessel would be become empty.
Again, due to the modular concept of the PUMPPAC? System, level and pressure switches can be added to ensure that operators are warned of any such event.
However, warning systems which require operator input are always subject to `operator error`, and in some cases the operator may not be present at the exact time the fault occurs. Hence, an automated safety system is deemed to be advantageous.
The effects of an out-board seal failure, could potentially be a much more dangerous scenario. If the barrier fluid is for example a fluid with a low ignition temperature (the ignition (sometimes called auto-ignition) temperature of a substanceis the minimum temperature required to initiate or to cause self-sustained combustion independent of the heat source. A spark or flame is not necessary for ignition when a flammable vapour reaches its auto-ignition temperature), this type of fluid cancause a fire hazard if the fluid is leaked into the surrounding atmosphere due to an outboard seal failure. In this instance, if there is a delay in the operator shutting down the pump, a serious accident may occur, hence an automated system is evenmore advantageous.
One approach employed in order ensure that the high level of safety of the PUMPPAC? System is not compromised is the use of a standard pressure switch, whereby the pressure is simply monitored at the return line from the seal to thePUMPPAC? System. The switch may be set to be triggered on falling pressure, which can ultimately send a signal to a relay, which ultimately shuts down the motor on the PUMPPAC?, preventing excess barrier fluid loss.
In the present invention the use of an oil safety fuse system ensures that in the event of mechanical seal failure (single seal, double seal, in-board/out-board etc.) the flow of barrier fluid to the mechanical seal is shut off, hence preventingexcess barrier fluid loss. This system does not use electrical components and this is particularly advantageous in hazardous areas. Upon the failure of any seal the barrier fluid is safely channeled back into the vessel, bypassing the mechanical seal,and hence preventing excess barrier fluid leakage.
According to a first aspect of the invention there is provided a mechanical seal support system comprising; means for feeding barrier fluid to a mechanical seal; means for detecting a predetermined difference in pressure between barrier fluid ata position before and after passage through said seal; means, responsive to said detection means, for reducing the flow of barrier fluid to said seal when said predetermined pressure difference is detected.
About the Author
Ningbo Yinzhou Guowei, mechanical seal Component Factory is a professional engaged in the design, development, manufacture, sale of various cartridge seal and flygt seals business. Production and testing are well-equipped with a high-quality staff.