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MAXON OXY-PILOT® 全氧助燃點火管路用于MAXON OXY-THERM® LE 燃氣燃燒器或標準 OXY-THERM® 工業(yè)燃燒器,熱量輸出zui高達7.3kW的。
如采用OXY-PILOT®,可*實現(xiàn)燃燒器的自動化運行,無需助燃空氣設(shè)備投資,同時也節(jié)省了點火器的投資成本。
maxonOXY-PILOT全氧助燃點火管路
電磁式
電磁式直流電動機由定子磁極、轉(zhuǎn)子(電樞)、換向器(俗稱整流子)、電刷、機殼、軸承等構(gòu)成,電磁式直流電動機的定子磁極(主磁極)由鐵心和勵磁繞組構(gòu)成。根據(jù)其勵磁(舊標準稱為激磁)方式的不同又可分為串勵直流電動機、并勵直流電動機、他勵直流電動機和復(fù)勵直流電動機。因勵磁方式不同,定子磁極磁通(由定子磁極的勵磁線圈通電后產(chǎn)生)的規(guī)律也不同。
串勵直流電動機的勵磁繞組與轉(zhuǎn)子繞組之間通過電刷和換向器相串聯(lián),勵磁電流與電樞電流成正比,定子的磁通量隨著勵磁電流的增大而增大,轉(zhuǎn)矩近似與電樞電流的平方成正比,轉(zhuǎn)速隨轉(zhuǎn)矩或電流的增加而迅速下降。其起動轉(zhuǎn)矩可達額定轉(zhuǎn)矩的5倍以上,短時間過載轉(zhuǎn)矩可達額定轉(zhuǎn)矩的4倍以上,轉(zhuǎn)速變化率較大,空載轉(zhuǎn)速甚高(一般不允許其在空載下運行)??赏ㄟ^用外用電阻器與串勵繞組串聯(lián)(或并聯(lián))、或?qū)⒋畡罾@組并聯(lián)換接來實現(xiàn)調(diào)速。
并勵直流電動機的勵磁繞組與轉(zhuǎn)子繞組相并聯(lián),其勵磁電流較恒定,起動轉(zhuǎn)矩與電樞電流成正比,起動電流約為額定電流的2.5倍左右。轉(zhuǎn)速則隨電流及轉(zhuǎn)矩的增大而略有下降,短時過載轉(zhuǎn)矩為額定轉(zhuǎn)矩的1.5倍。轉(zhuǎn)速變化率較小,為5%~15%??赏ㄟ^消弱磁場的恒功率來調(diào)速。
他勵直流電動機的勵磁繞組接到獨立的勵磁電源供電,其勵磁電流也較恒定,起動轉(zhuǎn)矩與電樞電流成正比。轉(zhuǎn)速變化也為5%~15%。可以通過消弱磁場恒功率來提高轉(zhuǎn)速或通過降低轉(zhuǎn)子繞組的電壓來使轉(zhuǎn)速降低。
復(fù)勵直流電動機的定子磁極上除有并勵繞組外,還裝有與轉(zhuǎn)子繞組串聯(lián)的串勵繞組(其匝數(shù)較少)。串聯(lián)繞組產(chǎn)生磁通的方向與主繞組的磁通方向相同,起動轉(zhuǎn)矩約為額定轉(zhuǎn)矩的4倍左右,短時間過載轉(zhuǎn)矩為額定轉(zhuǎn)矩的3.5倍左右。轉(zhuǎn)速變化率為25%~30%(與串聯(lián)繞組有關(guān))。轉(zhuǎn)速可通過消弱磁場強度來調(diào)整。
換向器的換向片使用銀銅、鎘銅等合金材料,用高強度塑料模壓成。電刷與換向器滑動接觸,為轉(zhuǎn)子繞組提供電樞電流。電磁式直流電動機的電刷一般采用金屬石墨電刷或電化石墨電刷。轉(zhuǎn)子的鐵心采用硅鋼片疊壓而成,一般為12槽,內(nèi)嵌12組電樞繞組,各繞組間串聯(lián)接后,再分別與12片換向片連接。
maxonOXY-PILOT全氧助燃點火管路
Installation and Start-up
• The pilot is shipped “cleaned for oxygen service.”
The spark gap is factory-set. Never attempt to
disassemble the pilot.
• Install the pilot by the NPT threads in the burner
housing of the OXY-THERM® LE, or with the bolton
pilot adapter when used on the Standard OXYTHERM
®.
• When threading in the pilot, do not use a pipe
wrench on the tee section; use the stainless nipple
instead. Take care not to damage the stainless fuel
tube when making the connection.
• The 3/16" compression fitting can be removed for
1/8" NPT connection, if preferred. The Swagelock
nut should only be tightened three-quarters of a
turn from finger-tight.
• Refer to the Capacity and Specification chart on
the previous page for recommended pressures and
flow rates.
• Spark should be constant only until the pilot lights.
• Pilot operation should always be interrupted when
used with either the OXY-THERM® LE or Standard
OXY-THERM® Burners. Failure to do so will result
in imbalanced main burner flame and accelerated
degradation of the refractory block.
• Cooling oxygen must be used when the pilot is
installed in a high temperature atmosphere and
the OXY-THERM® Burner is not firing.
• The proper sequence for igniting the pilot is: Spark
on, Oxygen on, Fuel on (ignition occurs), Spark off.
At this point, the main OXY-THERM® Burner can
be ignited. If the burner is not going to be ignited
within a few minutes, the pilot should be interrupted
to extend refractory life.
Assembly Numbers
Oxy-pilot Assembly Numbers
Maxon Oxy-pilot Assembly 58378
Replacement
Parts
Compression Fitting 58417
Insulator Block 58375
Pilot Adapter (for use with
Standard OXY-THERM®)
57815
Pilot Adapter Gasket 18850
Pilot Adapter Bolts (3 required) 40261