Ⅰ 什麼是風機的喘振
當風機發生喘振時，風機的流量周期性的反復，並在很大范圍內變化，表現為零甚至出現負值。風機流量的這種正負劇烈的波動，就像哮喘病人呼吸一樣。由於流且波動很大而發生氣流的猛烈撞擊，使風機本身產生劇烈振動．同時風機工作的雜訊加。大容量的高壓頭風機產生喘振時的危害很大，可能導致設備和軸承的損壞、造成事故．直接影響了鍋爐的安全運行。為了防止風機的不穩定性，可採取如下措施： (1)保持風機在穩定區域工作。因此，管路中應選擇p-Q特性曲線沒有駝峰的風機；如果風機的性能曲線有駝峰，應使風機—直保持在穩定區(即p-Q曲線下降段)工作。 (2)採用再循環。使一部分排出的氣體再引回風機入口，不使風機流量過小而處於不穩定區工作。 (3)加裝放氣閥。當輸送流量小於或接近喘振的臨界流量時，開啟放氣閥、放掉部分氣體，降低管系壓力，避免端振。
Ⅱ 誰能告訴我有關各種閥門的英語翻譯！！！
你要的基本上都有了，各種閥的名稱、部件，相關用語。
如果你要各種閥門的解釋，到這里
http://valve-2000.nease.net/shuyu.htm
CQ螺紋球閥 CQ Thread Ball Valves
L形三通式 L-pattern three way
T形三通式 T-pattern three way
安全閥 Safety valve
暗桿閘閥 Inside screw nonrising stem type gate valve
百葉窗; 閘板 shutter
百葉窗式擋板 louver damper
擺閥式活塞泵 swing gate piston pump
保溫式 Steam jacket type
報警閥 alarm valve
報警閥; 信號閥; 脈沖閥 sentinel valve
背壓調節閥 back pressure regulating valve
背壓率 Rate of back pressure
本體閥桿密封 body stem seal
波紋管閥 Bellows valves
波紋管密封閥 bellow sealed valve
波紋管密封式 Bellows seal type
波紋管平衡式安全閥 Bellows seal balance safety valve
波紋管式減壓閥 Bellows recing valve
波紋管式減壓閥 Bellows weal recing valve
薄膜 thin film
薄膜; 隔膜 diaphragm
薄膜式減壓閥 Diaphragm recing valve
薄型閘閥 Thin Gate Valves
不封閉式 Unseal type
槽車球閥 Tank Lorry Ball Valves
顫振 Flutter
常閉式 Normally closed type
常開式 Normally open type
超低溫閥門 Cryogenic valve
超高壓閥門 Super high pressure valve
超過壓力 Overpressure of a safety valve
襯膠隔膜閥 rubber lined diaphragm
襯膠截止閥 rubber lined globe valve
垂直板式蝶閥 Vertical disc type butterfly valve
磁耦合截止閥 Magnetic Co-operate Globe Valves
帶補充載荷的安全閥 Supplementary loaded safety valve
帶輔助裝置的安全閥 Assisted safety valve
單閥碟雙面平行密封閘閥 parallel single disk gate valve
單口排氣閥 Single Opening Exhaust Valves
單向閥 Non-return Valve
單閘板 Single gate disc
單閘板平板閘閥 Single Disc Flat Gate Valves
彈簧薄膜式減壓閥 Spring diaphragm recing valve
彈簧式安全閥 Direct spring loaded safety valve
彈簧座 Spring plate
彈性閘板 Flexible gate disc
當量計算排量 Equivalent calculated capacity
擋板 damper
導閥 Pilot valve
導向套 Valve guide disc guide
低溫閥門 Sub-zero valve
低壓閥門 Low pressure valve
底閥 bottom valve
底閥 Foot valve
電磁動裝置 Eletro magnetic actuator
電磁閥 magnetic valve
電磁閥 solenoid valve
電磁－液動裝置 Eletro magnetichydraulic actuator
電動閥 mortor operated valve
電動閥 motorized valve
電動截止閥 Electric Actuated Stop Valves
電動平行式雙閘板閘板 Electric Double Disk Parallel Gate Valves
電動楔式閘閥 Electric Actuated Wedge Gate Valves
電動裝置 Electric actuator
電－液動裝置 Eletro hydraulic actuator
電液伺服閥 electro-hydraulic servovalve
調節彈簧 Regulation spring
調節閥 adjusting valve
調節閥 control valve
調節閥 regulating valve
調節螺套 Adjusting bolt Adjusting screw
調節圈 Adjusting ring
蝶板 Disc
蝶閥；瓣閥 butterfly valve
蝶閥；瓣閥；拍門；鉸鏈閥 flap valve
蝶式緩沖止回閥 Butterfly Type Non-slam Check
蝶式止回閥 Butterfly swing check valve
定比減壓閥 Proprutioning pressure recing valve
定差減壓閥 Fixed differential recing valve
定值減壓閥 Fixed pressure recing valve
動態特性 Dynamic characteristics
對焊連接閥 Buttwelding valves
對夾蝶板閥 Wafer plate valves
對夾式襯膠蝶閥 Wafer Type Butterfly Valves with Rubber Itning
對夾式閥門 Clamp valves
對夾式止回閥 Wafer Check Valves
額定排量 Certified capacity
額定排量系數 Derated coefficient of discharge
二通閥 Two-way valves
閥 valve
閥板 valve deck plate
閥板 valve plate
閥板式活塞泵 valve deck plate type piston pump
閥板式活塞泵 valve plate type piston pump
閥瓣 Disc
閥操縱桿 valve operating rod
閥痤槽 valve seat recess
閥擋 valve grid
閥擋 valve positioner
閥擋 valve stop
閥導桿 valve tail rod
閥導向器 valve guide
閥蓋 bonnet
閥蓋襯套 bonnet bush
閥蓋墊片 bonnet gasket
閥桿 stem
閥桿 valve rod
閥桿 valve spindle
閥桿端部尺寸 Dimmension of valve stem end
閥桿環 stem ring
閥桿螺母 Yoke bushing Yoke nut
閥桿填料 stem packing
閥桿頭部尺寸 Dimension of valve stem head
閥簧 valve spring
閥簧壓板 valve spring plate
閥控水錘泵 valve-controlled hydraulic ram
閥框架 valve yoke
閥門 Valve
閥門傳動裝置 valve bandle set
閥門和管件 Valves and Fittings
閥門盤根 valve packing
閥門手柄 valve handle
閥盤 disc
閥盤 valve disc
閥片 Disc
閥球 valve ball
閥驅動臂 valve driving arm
閥驅動臂 valve motion arm
閥式活塞 valve type piston
閥式活塞 valve type bucket
閥室式活塞泵 valve box type piston pump
閥室式活塞泵（美） valve pot type piston pump
閥抬起裝置 valve lifting device
閥體 body
閥體 valve body
閥箱 valve box
閥箱 valve cage
閥箱 valve chest
閥箱；閥限位器 valve guard
閥箱蓋 cover for valve box
閥箱蓋 valve box cover
閥箱式活塞泵（美） turret type piston pump
閥形活塞泵 valve type piston pump
閥座 Seat ring
閥座 valve carrier
閥座 valve seat(body seat)
閥座；閥盤 valve seat
閥座環 seat ring
閥座密封嵌條 sealing strip for valve seat
法蘭 flange
法蘭堵頭 blind flange
法蘭端 flange end
法蘭接頭 flange joint
法蘭連接緊固件（雙頭螺栓和螺帽） flange bolting
法蘭密封面，法蘭面 flange facing
法蘭面加工 flange facing finish
法蘭球閥 Flange Ball Valves
翻板閥 Flap
反沖盤 Disc holder
反向作用式減壓閥 Reverse acting recing valve
反向作用式減壓閥 Reverse acting recing valve
放空閥 emptying valve
放氣閥 air vent valve;vent valve
放氣閥；排氣閥 air evacuation valve
放泄閥 escape valve
分置閥室式活塞泵 separate valve box type piston pump
分置閥室式活塞泵（美） side pot type piston pump
封閉式 Seal type
浮動式球閥 Float ball valve
浮球 Ball float
浮球閥 Float Valve
浮球式疏水閥 Ball float steam trap
浮球式疏水閥 Free Float Type Steam Trap
浮桶 Bucket float
浮桶式疏水閥 Open bucket steam trap
輔助（副）閥 Auxiliary valves
負荷率 Rate of load condensate
附加背壓力 Superimposed back pressure
復位彈簧 Returnning spring
杠桿式 Lever type
杠桿式安全閥 Lever and weight loaded safety valve
杠桿式減壓閥 Lever recing valve
高溫閥門 High temperature valve
高壓閥門 High pressure valve
格蘭密封 gland
隔離閥 isolating valve
隔膜 Diaphragm
隔膜閥 diaphragm valve
隔膜式控制閥 diaphragm operated comtrol valve
工作背壓 Operating back pressure
工作溫度 Operating temperature
工作溫度 Working temperature
工作壓差 Operting differential pressure
工作壓力 Operating pressure
工作壓力 Working pressure
公稱通徑 Nominal diameter
公稱壓力 Nominal pressure
固定式球閥 Fixed ball valve
關閉壓力 Lockup pressure
關閥過冷度 Subcooled temperature of close valve
關閥溫度 Closing valve temperature
管道安全閥 Piping Safety Valves
過冷度 Subcoold temperature
過流閥(或節流閥) Restrictor Valves
喉徑 Throat diameter
滑閥 slide valve
滑閥式回轉活塞泵 rotary piston pump with slide gate
滑閥型轉子泵 eccentric rotary pump with sliding sleeve
環形閥 annular valve
環形閥 double beat valve
換向閥 selector valve
換向閥 shuttle valve
回轉滑閥活塞泵 piston pump with rotary gate
回座壓力 Re-seating pressure of a safety valve
活塞昵減壓閥 Piston recing valve
活塞式閥 piston valve
活塞式閥；柱塞式閥 plunger valve
活塞式減壓閥 Piston recing valve
減速閥 Deceleration valves
減壓比 Pressure recing ratio
減壓閥 pressure recing valve
漿液閥 Parallel Slide Valves
角閥 Angle Valve
角閥 isolation valve angle configuration
角式 Angie type
角式節流閥 Angle Throttle Valves
角式截止閥 Angle Stop valves
鉸鏈閥；片狀閥 flapper valve
節流閥 throttle valve
節流閥 choke valve
節流閥；節流 throttle
結構長度 Face-to-face dimension ;End-to-end dimension; Face-to-centre dimension
結構形式 Type of construction
截止閥 Globe valve
截止閥 Shut-off Valve
截止閥；關斷閥 shut-off valve
截止式隔膜閥 Globe diaphragm valve
緊急切斷閥 Emergeny Cut-off Valves
進氣閥 air intake valve
進水閥；進口閥門 inlet valve
靜態特性 Static characteristics
靜態特性偏差 Static characteristics derivation
開閥過冷度 Subcooled temperature of open valve
開閥溫度 Opening valve temperature
開啟高度 Lift
殼體試驗 Shell test
殼體試驗壓力 Seal test pressure
空氣閥門 Air valves
快速排污閥 Quick Draining Valves
類型 Type
冷凝結水排量 Cold condensate capacity
冷態試驗差壓力 Cold differential test pressure
理論排量 Theoretical flowing capacity
連接槽尺寸 Dimension of connecting channel
連接尺寸 Conncetion cimension
連接形式 Type of connection
簾面積 Curtain area
流道面積 Flow area
流道直徑 Flow diameter
流量孔板 flow orifice plate
流量控制閥 flow control valve
流量特性 Flow characteristics
流量特性偏差 Flow characteristics derivation
漏汽量 Steam loss
脈沖式疏水閥 Impulse steam trap
密封面 Sealing face
密封試驗 Seal test
密封試驗壓力 Seal test pressure
明桿平行式雙閘板閘板 Double Disk Parallel Gate Valves
明桿閘閥 Outside screw stem rising through handwheel type gate valve
膜片 Diaphragm
內壓自封 Pressure seat
逆止閥；止回閥 check valve
逆止閥；止回閥 non-return valve
逆止閥;止回閥;單向閥 check valve
排放背壓力 Brilt-up back pressure
排放壓力 Relieving pressure
排灰閥 Ash valves
排量系數 Coefficient of discharge
排氣閥 air release valve
排氣閥 Exhaust valves
排氣閥 Vent Valve
排水閥 Drainage valves
排水溫度 Temperature at discharging condensate
排污閥 blowdown valve
排污箱(閥) Waste Valves
排渣閘閥 Scum Gate Valves
盤閥 moushroom valve
盤狀閥 plate valve
旁路閥 by pass valve
配汽活塞閥缸套 piston valve line
噴射閥 injection valve
噴射閥 sprayer valve
噴水閥 spray water valve
頻跳 Chatter
平衡閥 Balance valves
平衡式 Balance type
平行式閘閥 Parallel gate valve Parallel slide valve
啟閉件 Disc
啟閉壓差 Blowdown of a safety valve
起始升程 Commencement of lift
氣動裝置 Pneumatic actuator
氣閥搖臂 valve arm
氣－液動裝置 Pneumatic-hydraulic actuator
潛水電泵(排污泵) Submerged Motor Pumps
切斷閥;截止閥 block valve;shut-off valve;stop valve
切斷式止回閥 stop check valve
切換閥;多向閥 changeover valve
球、球芯 Ball
球閥 Ball valve
球閥 globe valve
球體 Ball
全啟式安全閥 Fall lift safety valve
熱凝結水排量 Hot condensate capacity
入口隔離門 suction isolating valve
塞子 Plug
三通閥 three-way isolating valve
三通閥 three-way valve
三通式 Three way type
上密封 Back seat
上密封試驗 Back seal test
滲漏量 Leckage
升降立式止回閥 Vertical lift check valve
升降式止回閥 Lift check valve
適用介質 Suitable medium
適用溫度 Suitable temperature
手搖油泵(閥) Manual Oil Pumps Valves
疏水閥 drain valve
雙金屬片式疏水閥 Bimetal elements steam trap
雙口排氣球 Double Opening Exhaust Valves
雙聯彈簧式安全閥 Duplex safety valve
雙閘板 Double gate disc
雙閘板平板閘閥 Double Disc Flat Gate Valves
水封閘閥 Water Seal Gate Valves
水力噴射器(真空泵) Vacuum Pumps
伺服閥 servovalve
填料 Packing
填料墊 Packing seat
填料函 Stuffing
填料式旋塞閥 Gland packing plug valve
填料箱 Stuffing box
填料壓蓋 Gland
通氣閥 breather valve
通氣閥；呼吸器 breather
通用閥門 General valve
吐出閥；排出閥 discharge valve
吐出閥限位器 delivery valve guard
微啟式安全閥 Low lift safety valve
微阻緩閉止回閥 Tiny Drag Slow Shut Check Valves
吻合度 Percent of contact area
蝸輪傳動蝶閥 Butterfly Valves with Gear Actuator
蝸輪傳動裝置 Wormgear actuator
屋脊式隔膜閥 Weir diaphragm valve
無閥泵 valveless pump
無閥隔膜泵 valveless diaphragm pump
無閥振動泵 valveless vibration pump
無負荷漏汽量 No-load steam loss
無負荷漏汽率 Rate of no-load steam loss
吸（抽）氣閥 Aspirating valves
吸入閥 suction valve
吸入閥限位器 suction valve guard
先導式安全閥 Pilot operated safety valve
先導式液壓閥 Pilot-operated recing valve
相對靜偏差 Relative static characteristics derivation
相對流量特性偏差 Relative flow characteristics derivation
相對壓力特性偏差 Relative pressure characteristics derivation
銷軸 Hinge pin
楔式閘閥 Wedge gate valve
斜板式蝶閥 Indined disc butterfly valve
泄料（放空，排污）閥 Blowdown valves
泄壓閥 Decompression valves
泄壓閥 pressure release valve
泄壓閥；安全閥 relief valve
卸荷式減壓閥 Balanced recing valve
型號 Type Model
旋啟多瓣式止回閥 Multi-disc swing foot valve
旋啟式止回閥 Swing check valve
旋啟雙瓣式底閥 Double disc swing foot valve
旋塞閥 Cock
旋塞閥 plug valve
壓力（増壓）閥 Pressure valve
壓力調節閥；壓力控制閥 pressure controlled valve
壓力特性 Pressure characteristics
壓力特性偏差 Pressure characteristics derivation
壓力增長系數 Pressure increasing ratio
搖桿 Arm
液動裝置 Hydraulic actuator
液化氣管件 LPG Pipe Fitting
液下泵 Under Water Pumps
液壓執行器 hydraulic actuator
儀表針形截止閥 Meter Needle Type Globe Valves
溢流閥 overflow valve
翼形閥；錐形閥 wing valve
油封式旋塞閥 Lubricated plug valve
有閥翼板 double acting wing
有閥翼板 wing with valve
有負荷漏汽量 Load steam loss
有負荷漏汽率 Rate of load steam loss
圓板閥；圓盤閥 disc valve
圓盤式疏水閥 Shemostatic team trap
圓柱齒輪傳動裝置 Cylindrical gear actuator
圓錐齒輪傳動裝置 Conical gear actuator
閘板 Wedge disc
閘板式隔膜閥 Wedge diaphragm valve
閘閥 gate valve
閘閥 sluice valve
針形閥 Pintle valve ; Needle valve
真空破壞閥 vacuum breaker valve
蒸汽疏水閥 Automatic steam trap Trap
整定壓力 Set pressure
正向作用式減壓閥 Direct acting recing valve
支架 Yoke
直接載荷式安全閥 Direct loaded safety valve
直接作用式減壓閥 Direct-acting recing valve
直流式 Y-globe type
直流式截止閥 Oblique Stop Valve
直通單向閥 inline check valve
直通單向閥 straightway check valve
直通閥 Throughway Valve
止回閥 Check Valve
止回閥；迴流閥 reflux valve
制動閥 Brake valves
中壓閥門 Middle pressure valve
鍾形浮子式疏水閥 Inverted bucket steam trap
鍾形罩 Inverted bucket
軸套 Axis Guide
主閥 Main valve
主要外形尺寸 Prime out-form dimensions
主要性能參數 Specifeca tion speeification
注液漏斗閥 Priming Tundish Valve
柱塞閥 Plunger valve
柱塞截止閥 Plunger Globe Valve
柱塞型擺動閥 rocking plunger valve
撞擊手輪 Impact handwheel
錐形閥；翼形閥 conical valve
自動循環閥 Automatic Recirculation Valve
組合閥 Combination valves
最大過冷度 Maximum subcoold temperature
最大流量 Maximum flow rate
最大壓差 Maximum differential pressure
最低工作壓力 Minimum operating pressure
最高背壓率 Maximum rate of back pressure
最高工作背壓 Maximum operating back pressure
最高工作溫度 Maximum operating temperature
最高工作壓力 Maximum operating pressure
最高排水溫度 Maximum temperature at discharging
最高允許溫度 Maximum allwable temperature
最高允許壓力 Maximum allowable pressure
最小過冷度 Minimum subcooled temperature
最小壓差 Minimum differntial pressure