自力式控制阀技术精品PPT课件.ppt

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1、12什么是自力式控制阀？ 依靠流经阀内介质自身的压力、温度作为能源驱动阀门自动工作，不需要外接电源和二次仪表。利用阀输出端的反馈信号（压力、压差、温度）通过信号管传递到执行机构驱动阀瓣改变阀门的开度，达到调节压力、流量、温度的目的调节阀 3 一、 自力式控制阀的分类4按被调参数分：l压力（差压）调节型l温度调节型l流量调节型5一、温度调节型6温度调节型7ValvelValve bodylSeatlPluglBellows housinglBalancing bellows1.Plug stem8Control thermostatlOperating elementlPositioning p

2、inlPositioning bellowslCapillary tubelTemperature sensorlPistonlSet point adjuster7.Set point dial9典型应用10二、流量调节型111 Valve body1.1 Connection nut with seal and weld-on fitting1.2 Restriction for adjusting flow rate limitation1.3 Cap for set point adjuster (restriction)122 Seat (exchangeable)3 Valve p

3、lug (pressure-balanced)4 Plug stem5 Positioning spring6 Actuator7 Operating diaphragm8 Control line for high pressure13按调节方式分：l上游压力调节型l下游压力调节型14上游压力调节型：INLET PRESSUREOUTLET PRESSUREATMOSPHERIC PRESSURE15下游压力调节型：INLET PRESSUREOUTLET PRESSUREATMOSPHERIC PRESSURE16按动作方式分：l直动式l指挥器作用式17直动式：又称弹簧负载式，利用弹性力与

4、反馈信号平衡的原理。INLET PRESSUREOUTLET PRESSUREATMOSPHERIC PRESSURE18 指挥器作用式： 增加了一个指挥器（先导阀）它起到对反馈信号的放大作用然后通过执行机构，驱动主阀阀瓣运动达到改变阀开度的目的 19INLET PRESSUREOUTLET PRESSURELOADING PRESSUREATMOSPHERIC PRESSURE20二、 本项目常用自力式控制阀21 上游压力调节型：98系列、Y695系列 下游压力调节型：95系列、Y690系列、 Y692系列、627系列、ACE95系列、 指挥器动作型：1190系列、1098系列22三、 67

5、系列自力式控制阀2367CF Series Filter RegulatorsThe 67CF Series regulators are typically used to provide constantly controlled, reduced pressures to pneumatic and electropneumatic controllers and other instruments. These direct-operated regulators are suitable for most air or gas applications. Other applicat

6、ions include providing reduced pressures to air chucks, air jets, and spray guns.24INLET PRESSUREOUTLET PRESSUREATMOSPHERIC PRESSUREAdjusting ScrewValve PlugSpring CaseValve SpringDrain ValveFilter ElementControl SpringPusher PostDiaphragm PlateDiaphragmSeat25Construction MaterialsBody, Spring Case

7、: Aluminum (ASTM B85/Alloy 380)Pusher Post: Polyester resinUpper Spring Seat: Zinc-plated steelDiaphragm Plate: Zinc-plated steelAdjusting Screw: Zinc-plated steelFilter Retainer: Zinc-plated steelValve Plug: Brass stem with nitrile (NBR) plug(standard); aluminum stem with nitrile (NBR) orfluoroelas

8、tomer (FKM) plug; or stainless steel stem with nitrile (NBR) or fluoroelastomer (FKM)plug (optional)Soft Seat: Nitrile (NBR) (standard), or fluoroelastomer (FKM) (optional)Diaphragm and O-Rings: Nitrile (NBR) (standard),fluoroelastomer (FKM), or silicone (VMQ) (optional)Control Spring: Plated steel

9、(standard) or Inconel (for 67CFR NACE)Valve Spring: Stainless stee (standard) or Inconel (NACE)Drain Valve: Brass (standard), aluminum, or stainless steel (optional)Filter Element: Cellulose (standard), glass fiber, or stainless steel (optional)26Features： Internal ReliefThe Type 67CFR has an intern

10、al relief valve with a soft seat for reliable shutoff with no discernible leakage. Panel MountingPanel mount construction includes spring case with 1/4-inch NPT vent, handwheel adjusting screw, and mounting nut. Instrument Supply RegulatorProvides a clean air supply to a variety of pneumatic and ele

11、ctropneumatic instrumentation. Pressure Loading RegulatorProvides high accuracy and improved performance in dirty steam service by eliminating the need for a pilot regulator27Maximum Inlet Pressure (Body Rating)：250 psig (17.2 bar)AccuracyInlet Sensitivity: Less than 0.2 psig (0.014 bar) change in o

12、utlet pressure for every 25 psig(1.72 bar) change in inlet pressureRepeatability: 0.1 psig (0,0069 bar) Air Consumption: testing repeatedly shows no discernible leakage28Regulator Temperature CapabilitiesWith Nitrile (NBR): -40 to 180F (-40 to 82C)With Fluoroelastomer (FKM): 0 to 300F (-18 to 149C)W

13、ith Silicone (VMQ): -60 to 180F (-51 to 82C)29303167CFR作为过滤减压器使用作为过滤减压器使用电气阀门定位器稳态时空气耗量标准放大器: 供气压力为1.4bar（20psig）时:小于0.4 标准m3/hr（14scfh）供气压力为5.5bar（80psig)时:小于1.4 标准m3/hr(49scfh)Example：当阀门供气压力为2.5bar时，如何选择过滤减压器。32Ordering GuideType (Select One)p Type 67CF (without internal relief)*p Type 67CFR (wit

14、h internal relief)*Spring Case Style (Select One)p Standard with drilled hole vent*p Handwheel adjusting screw*p Panel mount (includes 1/4-inch spring case vent, handwheelpadjusting screw, and mounting nut)*p Closing cap and 1/4-inch NPT spring case vent*Outlet Pressure Range (Select One)p 0 to 20 p

15、sig (0 to 1,4 bar) (not available for NACE)*p 0 to 35 psig (0 to 2,4 bar)*p 0 to 60 psig (0 to 4,1 bar)*p 0 to 125 psig (0 to 8,6 bar)*Diaphragm, O-Rings, and Valve Plug (Select One)p Nitrile (NBR) (standard)*p Fluoroelastomer (FKM)*p Silicone (VMQ) diaphragm, O-rings, and nitrile valve plug*Filter

16、Material (Select One)p Cellulose (40 microns) (standard)*p Glass (10 microns)*p Stainless steel (40 microns)*Drain Valve (Select One)p Brass (standard)*p Aluminum*p Stainless steel*33Drain Valve Location (Select One)p Position 1 - Aligned with inlet (standard)*p Position 2p Position 3p Position 4Spr

17、ing Case Vent Location (Select One)p Position 1 - Aligned with inlet (standard)*p Position 2p Position 3p Position 4Second Outlet (Select One)p Open (standard)*p Plugged with pipe plug*p Tire Valve* Pressure Gauge (see below)Triple Scale Pressure Gauge (Optional)Brass Gaugep 0 to 30 psig/0 to 0.2 MP

18、a/0 to 2 bar*p 0 to 60 psig/0 to 0.4 MPa/0 to 4 bar*p 0 to 160 psig/0 to 1.1 MPa/0 to 11 bar*Stainless Steel Gaugep 0 to 30 psig/0 to 0.2 MPa/0 to 2 bar*p 0 to 60 psig/0 to 0.4 MPa/0 to 4 bar*p 0 to 160 psig/0 to 1.1 MPa/0 to 11 bar*NACE (MR0175) Construction (Optional)p Yes*Ammonia Service Construc

19、tion (Optional)p Yes*Replacement Parts Kit (Optional)p Yes, send one replacement parts kit to match this order.34四、 95系列自力式控制阀3595 Series Industrial Pressure RegulatorsThe 95 Series regulator is a compact, large-capacity, self-operated pressure regulator. The unit is available in 1/4 through 2-inch

20、sizes and is offered in several different end connection configurations. They are designed to handle pressures up to 600 psig (41.4 bar) and temperatures up to 650F (343C). This product can help solve the toughest pressure control applications. Typical applications include superheated steam, steam t

21、racing, nitrogen purging, boiler feed water, process chemicals, cooling water, test fixtures, wash tanks, sterilizers/autoclaves, fuel lines, pneumatic supply, and many others.3695H or 95HT REGULATOR95L REGULATOR95HD REGULATOR37Principle of OperationThe Type 95 (refer to figure 4) is a direct operat

22、ed regulator. Downstream pressure is registered internally through the body to the under side of the diaphragm. When the downstream pressure is at or above the set pressure, the disk is held against the seat, and there is no flow through the regulator. When demand increases, downstream pressure drop

23、s slightly allowing the spring to extend, moving the stem down and the disk away from the seat. This allows flow through the body to the downstream system. Types 95H, 95L,95HT, 95HC and 95LC use spring force to regulate outlet pressure. Types 95HD and 95LD use spring force to maintain a differential

24、 pressure between spring case loading pressure and outlet pressure.38Available ConfigurationsType 95L: Low-pressure regulator for 2 to 30 psig(0.1 to 2.0 bar) outlet pressuresType 95H: High-pressure regulator for 5 to 150psig (0.34 to 10 bar) outlet pressuresType 95LD: Low-pressure differential regu

25、lator for 2 to 30 psig (0.1 to 2.0 bar) differentialpressures with handwheels and packing boxType 95HD: High-pressure differential regulator for 5 to 150 psig (0.34 to 10 bar) differential pressures with handwheel and packing boxType 95HP: High-pressure regulator for 5 to 400psig (0.34 to 28 bar) ou

26、tlet pressures (soft seated)Type 95HT: High-pressure/high temperatureregulator for 5 to 300 psig (0.34 to 21 bar) outletpressures (metal seat) and up to 650F (343C)Type 95LC: Low-pressure regulator for 2 to 30psig (0.1 to 2.0 bar) outlet pressures for cold temperature applications down to -325F (-19

27、8C)Type 95HC: High-pressure regulator for 5 to 150 psig (0.34 to 10 bar) outlet pressures for cold temperature applications down to -325F (-198C)39Body and Orifice Sizes1/4-inch body: 1/4-inch (6.4 mm) orifice1/2-inch body: 3/8-inch (9.5 mm) orifice3/4 and 1-inch bodies: 9/16-inch (14.3 mm) orifice1

28、-1/2 and 2-inch bodies: 1-1/16-inch (27 mm) orifice40Maximum Pressures411. Maximum inlet for Types 95HT and 95HP is 600 psi (41.4 bar) or body rating limit, whichever is lower. Values listed for the Type 95HT assume temperatures of 650F (343C), and 100F (37.8C) for the Type 95HP.2. 1/4-inch bodies s

29、hall be provided with 1/2-inch flanges.3. Maximum outlet pressure for the stainless steel Type 95HP is 550 psi (37.9 bar) or flange rating limit, whichever is lower.4. Maximum outlet pressure for the Type 95HT is 450 psi (31.0 bar) or flange rating limit, whichever is lower.42Flow Coefficients for a

30、ll Type 95 Regulators43Body Sizes and Pressure Ranges44Body Sizes and Pressure Ranges45Air SCFH Capacities for 1/4 through 1-Inch Types 95L and 95LD Regulators with Elastomer Diaphragm4695系列自力式控制阀选型举例47五、 98系列自力式控制阀48TYPE 98L WITH COMPOSITION SEATVALVE PLUG AND PUSHER POSTASSEMBLY USED IN 98 SERIEST

31、YPE 98LD WITH METAL SEAT49The 98 Series is used for back pressure or relief applications in liquid, gas, air, and steam service. The Types 98L, 98H, and 98HH are self-operated and spring loaded, while the Types 98LD and 98HD use additional pressure loading to maintain relief differential relief pres

32、sure settings, or for remote set point adjustment.50六、 627系列自力式控制阀51ADJUSTINGSCREW CAPADJUSTINGSCREWSCREENEDVENTASSEMBLYSPRING CASEDIAPHRAGM CASINGPUSHERPOSTSEAT RINGPITOT TUBEDISK ASSEMBLYCONTROL SPRING52The 627 Series self-operated pressure reducing regulatorsare for low and high pressure systems.

33、 These regulators can be used with natural gas, air, or a variety of other gases. Performance characteristics vary according to construction.53Maximum Inlet Pressure (Body Rating)2000 psig (138 bar) for screwed steel, 1480 psig (102 bar) for RF flanged steel, or 1000 psig (69 bar) for ductile ironMa

34、ximum Valve Disk Inlet Pressure Rating 2000 psig (138 bar) for nylon disk, 1000 psig (69 bar) for nitrile disk or 200 psig (14 bar) for fluoroelastomer disk54627系列自力式控制阀选型举例55七、 Y690系列自力式控制阀56The Y690A Series Gas Blanketing Regulator System reduces a high pressure gas, such as nitrogen, to maintain

35、a protective environment above any liquid stored in a tank or vessel. The regulator system replaces the volume of vapors with a volume of blanketing gas to prevent the internal vessel pressure from decreasing, when liquid is being pumped out or when the vessel is suddenly cooled, causing vapors to c

36、ontract. In both cases a slight positive vessel pressure prevents outside air, moisture and other contaminants from entering the vessel. The Type Y690A is a direct-operated regulator used for accurate pressure control on very low pressure blanketing systems. Downstream pressure is sensed through a p

37、itot tube installed in the lower casing of the regulator, thus no external control line is required. The Type Y690AM uses a control line to more accurately control the pressure if the regulator is mounted away from the tank57SOFT DISKORIFICEPITOTTUBESPRINGCASECONTROL SPRINGCLOSING CAP5859Available C

38、onfigurationsType Y690A: Direct-operated pressure reducing regulator for outlet pressures up to 7-inches w.c.(17 mbar) equipped with a pitot tube for greater regulated capacities.Type Y690AH: Direct-operated pressure reducing regulator for outlet pressures up to 7 psig (483 mbar) equipped with a pit

39、ot tube for greater regulated capacities.Type Y690AM: Direct-operated pressure reducing regulator for outlet pressures up to 7-inches w.c.(17 mbar) equipped with a blocked throat and O-ring stem seal. The lower diaphragm casing is tapped 1/2-inch NPT screwed for control line connection.Type Y690AHM:

40、 Direct-operated pressure reducing regulator for outlet pressures up to 7 psig(480 mbar) equipped with a blocked throat and O-ring stem seal. The lower diaphragm casing is tapped 1/2-inch NPT for control line connection.6061Y690系列自力式控制阀选型举例62八、 Y695系列自力式控制阀63九、 1098系列自力式控制阀64入口压力出口压力负载压力大气压力61LD 系列1

41、806 型65Type 1098-EGR-6351 Regulator Schematic66VALVEPLUGSPRINGUNBALANCEDVALVE PLUGMAINVALVEPLUGPIPE NIPPLETHAT CONNECTSTO PILOT SIDETAPPINGBLEED HOLETRAVEL INDICATORWITH REMOVABLEPROTECTORCONTROL LINECONNECTION67标准单指挥器安装图68典型的双指挥器锅炉燃料安装图69锅炉燃料配置图70工作原理指挥器作用式1098-EGR型控制阀使用入口压力作为操作介质，它经指挥器的操作被减压后加载于执行

42、机构阀膜。出口或下游压力与执行机构内的加载压力相抗衡，同时也抗衡指挥器控制弹簧力。在工作时，假设出口压力低于指挥器控制设定值。指挥器阀膜上的控制弹簧力便打开指挥器阀塞，给执行机构阀膜提供额外的加载压力。这个加载压力迫使执行机构杆向前移动，经弹性连接结构打开主阀阀塞。阀塞的向上移动使气体能通过阀笼流入下游系统。当下游的需求量满足后，出口压力趋于上升，并作用于指挥器和执行机构阀膜上。这个压力超过了指挥器控制弹簧设定值后，使指挥器阀膜离开，阀塞弹簧（6351 型或61系列指挥器）或气囊（通过6354M 型指挥器的6352 型）关闭指挥器阀塞（6351 型或61 系列指挥器为不平衡型，但通过6354M

43、 型指挥器的6352 型为平衡型）。于是执行机构阀膜上多出的加载压力通过排放孔（6351 型指挥器），排放阀芯（61 系列指挥器），或限流孔（6352 型至6354M 型指挥器）向下游侧释放出。71安装注意事项1. 安装前，应检查主阀、指挥器和导管是否有任何由装运造成的损坏或在装箱和运输过程中可能混入的异物。确保阀体内部的清洁以及管路内无异物。 2.安装时，应确保通过主阀的流量方向与阀体上的流量箭头方向一致。3.若在维护或检查时流程不间断，则应围绕调压器安装一个三阀组旁路装置。4. 为使指挥器弹簧箱体通气口不被堵塞或防止弹簧箱体积聚水汽、腐蚀性化学物质或其它异物，应将通气口朝下安装，否则就应采

44、取保护措施。5. 如图3所示从上游管路至过滤器入口处铺设一条3/8英寸（9.53 mm）或更大外径的指挥器供压管路。不要把上游管路连接口安放在湍流区。72投用注意事项1.启动前注意事项关断阀已隔离调压器。通气阀已关闭。手动阀已关闭。在引入任何下游压力之前，先将指挥器的供压压力引入调压器。否则由于指挥器和主阀组成零件反向受压可能会造成内部损坏。2.启动过程中始终用压力表来监视下游压力。3.启动 缓慢打开指挥器供压管路上的手动阀。 缓慢打开上游关断阀，小开下游关断阀以产生最小流量。缓慢打开控制管路上的手动阀。 若需要，调整指挥器的设定值。 完全打开下游关断阀。 若有旁路阀，缓慢关闭旁路阀门。73B

45、ODY SIZES AND END CONNECTION STYLES阀体尺寸和端口连接型式MAXIMUM MAIN VALVE INLET PRESSURE* 400 psig (28 bar) or bodyrating limit, whichever is lower主阀最大入口压力 400 psig（27.6 bar）或阀体额定值，两者取小MAXIMUM PILOT SUPPLY PRESSURE*600 psig (41 bar)指挥器最大供压压力600 psig（41.4 bar）74OUTLET (CONTROL) PRESSURE RANGES75十、 1190系列自力式控制

46、阀76INLET PRESSURE OUTLET PRESSURE LOADING PRESSURE PILOT SUPPLY PRESSURE ATMOSPHERIC PRESSURETYPE 95H SUPPLYREGULATORSETPOINTADJUSTMENTFIXED RESTRICTIONCONTROL LINETYPE Y191A PILOT77写在最后写在最后成功的基础在于好的学习习惯成功的基础在于好的学习习惯The foundation of success lies in good habitsNoImage 结束语当你尽了自己的最大努力时，失败也是伟大的，所以不要放弃，坚持就是正确的。When You Do Your Best, Failure Is Great, So DonT Give Up, Stick To The End演讲人：XXXXXX 时 间：XX年XX月XX日