Product Overview SAFETY valves. Sempell ǀ product overview SAFETY valves

Transcription

1 SEMPELL Product Overview SAFETY valves Sempell ǀ product overview SAFETY valves

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3 PENTAIR VALVES & CONTROLS A GLOBAL NETWORK OF INTERNATIONAL BRANDS PENTAIR VALVES & CONTROLS IS THE NAME BEHIND THE WORLD S MOST COMPREHENSIVE RANGE OF VALVES, ACTUATORS AND ASSOCIATED FLOW CONTROL PRODUCTS. Supplying a host of leading global brands, we work closely with the oil & gas, power generation, mining, chemical, food & beverage and marine industries, so we can anticipate their needs and exceed their expectations at every level. EXCELLENCE IN ENGINEERING At Pentair Valves & Controls our position as the technology leader in flow control is solidified by the collective resources of our brands. Utilising the latest systems and technology, our specialists produce the highest quality flow products at competitive market pricing. QUALITY PHILOSOPHY A strong commitment to maintaining and improving the quality of both product performance and customer service is inherent within our management policy. Our factories and Q.A. procedures are inspected and audited regularly by major quality authorities such as Llody Register, BSI, Bureau Veritas, and TÜV, and are in compliance with EN ISO 9000:2000. APPLICATION SOLUTIONS Working closely with industry contractors and users, Pentair Valves & Controls engineers are able to develop specific proposals for individual process requirements - by combining advanced technology with outstanding engineering expertise. PROJECT PACKAGES The extensive range of product types enables Pentair Valves & Controls to propose and supply integrated project packages. Simplify your supply chain by including Pentair as an approved vendor. ANYWHERE IN THE WORLD What s more, Pentair s products can be found at work in every corner of the globe with 30,000 people worldwide, working with clients and partners on six continents. Our flow management solutions are backed by unrivalled customer services, experience and support. ǀ 3

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5 Sempell a company with traditions Sempell benefits from more than 130 years of experience and since then serves its power customers with optimal solutions in all cases where high pressure, extreme temperatures and critical properties exit, especially where high safety regulations are required. Sempell delivers control, safety relief and isolation valves to conventional and nuclear power plants. With decades of expertise in thermodynamics, Sempell provides turbine bypass and startup control valves with unparalleled reliability to the OEM s plant design engineer for applications in supercritical and ultra-supercritical power plants. In addition, Sempell forged gate, globe and check valves serve the DIN and ASME power generation markets. Applying cutting edge material science and valve designs, Sempell isolation and non-return valves are designed for all types of power plants, including nuclear and supercritical plants, which operate at temperatures up to 720 C. Within the nuclear power generation segment, Sempell pioneered new technology for pilot operated pressurizer safety valve systems on the new GEN III reactors, regardless of code. Sempell also provides other critical solutions for the nuclear industry, including system medium operated main steam isolation valves and pilot operated main steam safety valves. Finally, the quality and experience of Sempell s service organization is unequaled. With a complete range of spare parts, as well as maintenance, mobile machining, in-line testing, planning and engineering capabilities, you can count on Sempell to keep your plant running at a high level of efficiency. History 1874 First valve produced in Mönchengladbach 1980 Company relocated to new premises in Korschenbroich 1991 Deutsche Babcock AG, Oberhausen aquired Sempell AG 1997 Incorporated within the Flow Control Division of Tyco International Group of Companies - Sempell AG and Sempell Armaturen Service GmbH 1999 Leading manufacturing plant within the new tyco Flow Control Engineered Products Group 2004 DEWRANCE is merged into SEMPELL AG by keeping brand and products 2009 INTERVALVE is merged into SEMPELL AG by keeping brand and products 2011 Opening of the extention Plant West 2012 Sempell was changed from Sempell AG to Sempell GmbH 2013 Merger of Tyco International s business unit Flow Control with Pentair. 140 years of experience & success ǀ 5

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7 SAFETY VALVES Safety valves are used to protect systems against overpressure and to blow-off the required capacity of the system medium. The requirements for safety relief valves on boilers application are described in TRD 421 and the US code ASME Section I. For process industry the standards are AD 2000 resp. ASME VIII. Together with the Pressure Equipment Directive a complete set of european standards will be established. The standard ISO EN 4126 part 1 to 7 defines the different types of safety devices. In the process industry besides spring loaded safety valves also pilot operated valves are used. For the protection of boilers because of the high operation forces the use of disc type springs enables to install large loaded safety valves also on high pressures. According to the German standards these safety valves will in most cases be equipped with a pneumatic actuator where a supplementary closing force is obtained and the valve can be opened at pressure below. By means of these pneumatic support, i.e. superheater and reheater safety valves, with high pressure loss at the inlet, can be kept in a stable open position. In addition, Sempell offers pilot operated safety valves, which are medium operated according to the relieving principle. For very small blow-off capacities and for protection of liquids, safety valves with small diameters, also call thermal expansion valves, are used. For valves sizing and selection, the Sempell software package BABSY is available. History 1874 Foundation 1962 Sempell gets the first TÜV Type Test Certificate in Germany 1963 First type test of controlled safety valves 1967 First in situ test device for safety valves 1983 Spring operated safety valves get pneumatically assisted 1985 Safety valves in disc spring design 1989 UV-Stamp for Sempell as first German manufacturer 1993 SESITEST automatisation by computerisation with pc 1994 Serie S is first safety valve with TÜV Type test and uv-stamp 2000 Sempell is certified as first German valve manufacturer according to Pressure Equipment directive ǀ 7

8 Spring loaded safety valves Type Mini S small relief valve - low pressure Type VSE0 small relief valve - high pressure Design Flanges and threads according to DIN and ASME SMC conventional SMB balanced bellows Pressure Rating Inlet PN / class Diameter Inlet DN / ½ - 1 Set Pressure 1-52 bar Orifice diameter 14mm / SA 216 WCB / SA 351 CF8M Soft seat, lifting lever, test gag, reinforced bellows DESIGN Flanges and threads according to DIN and ASME Conventional type Pressure Rating Inlet PN / class Diameter Inlet DN / ½ - 1 Set Pressure bar Orifice Diameter 7.5 and 9 mm 304 SS Soft seat, lifting lever, test gag 8 ǀ

9 Spring loaded safety valves Type S-DIN safety relief valve - series S with DIN flanges Type S-API safety relief valve - series S with ASME flanges DESIGN SC closed bonnet SB balanced bellows SO open bonnet Pressure rating Inlet PN Inlet Size DN Set Pressure bar Orifice Diameter mm Standard High temperature Low temperature / Austenitic SS / Duplex, Monel, Hastelloy Cooling spacer, balance piston, lifting lever, test gag, position indicator, reinforced bellows Capacities and dimension according to API 526 Design SC closed bonnet SB balanced bellows SO open bonnet Pressure rating Inlet Class Diameter Inlet 1 8 Set Pressure bar Orifice Diameter mm Standard / SA 216 WCB High temperature / SA 217 WC6 Low temperature / SA 352 LCB Austenitic SS / SA 351 CF8M Duplex, Monel, Hastelloy Cooling spaces, balance piston, lifting lever, test gag, position indicator, soft seat etc. ǀ 9

10 Spring loaded safety valves Type VSE/ VSR Safety relief valve with large DIN connections Type Maxi S High capacity relief valve above orifice T Flanges according to DIN and welding ends, large connections enable long piping Design VSE1 open bonnet VSE2 conventional VSE4 weight loaded for small pressures VSE5 balanced bellows VSR with adjustable blowdown Pressure Rating Inlet PN Diameter Inlet DN Set pressure bar Orifice diameter mm Body material Standard High temperature Austenitic / Cooling spaces, balance piston, lifting lever, test gag, position indicator, soft seat Flanges according to DIN and ASME, welding ends Design SC closed bonnet SB balanced bellows SO open bonnet Pressure Rating Inlet PN / class Diameter Inlet DN / Set pressure bar Orifice diameter mm (orifice T1 Z) Body material Standard / SA 216 WCB High temperature / SA 217 WC6 Low temperature / SA 352 LCB Austentic SS / SA 351 CF8M Cooling spaces, balance piston, lifting lever, test gag, position indicator 10 ǀ

11 Spring loaded safety valves Type SOH high pressure relief valve, helical spring Type SOT high pressure relief valve, disc spring Welding ends, flanges according to DIN and ASME DESIGN Open bonnet Balanced piston Helical spring type pneumatically assisted Diameter Inlet DN / 3 12 Set Pressure bar Orifice Diameter mm A105 / A216WCB A182F12 / A217WC6 A182F22 / A217WC9 A182F91 position indicator Welding ends, flanges according to DIN and ASME DESIGN Open bonnet Balanced piston Disc spring type pneumatically assisted Diameter Inlet DN / 6 24 Set Pressure bar Orifice Diameter mm A105 / A216WCB / / position indicator ǀ 11

12 Control units for spring loaded safety valves Type STE4 electro pneumatic control unit for spring loaded safety valves Type STE5 pneumatic control unit for spring loaded safety valves The efficiency of plant operation can be increased by application of pneumatically assisted operation on a spring loaded safety valve. The advantages of direct acting safety valve will be combined with the advantages of controlled safety valves. With the control unit STE4 a fully TÜV type tested system is available. All control paths are three times redundant and the unit is working according to the fail safe principle. The functions pressure sensing, electrical control and pneumatic operation are split in separate housings. This modular design enables a high flexibility in difficult conditions, i.e. long distances or specific safety requirements. High tightness up to set pressure by supplementary loading Small opening and closing pressure differences blow down widely adjustable High setting accuracy and reproducibility Lifting of the safety valve also below set pressure possible Pressure setting of safety valve during normal plant operation Check of the control function without operation of the safety valve No electrical energy supply necessary Ideally suitable for explosion protection With one unit more than one safety valve can be operated The efficiency of plant operation can be increased by application of pneumatically assisted operation on a spring loaded safety valve. The advantages of direct acting safety valve will be combined with the advantages of controlled safety valves With the control unit STE5 a fully TÜV type tested system is available. All control paths are three times redundant and the unit is working according to the fail safe principle. High tightness up to set pressure by supplementary loading Small opening and closing pressure differences High setting accuracy and reproducibility Lifting of the safety valve also below set pressure possible Pressure setting of safety valve during normal plant operation Check of the control function without operation of the safety valve No electrical energy supply necessary Ideally suitable for explosion protection System pressure shown at pressure switch With one unit more than one safety valve can be operated 12 ǀ

13 Control units for hydraulically operated safety valves Type STE6 control unit for hydraulically operated safety valves Type VSH hydraulically operated safety valve Hydraulically operated safety valves protect preferably the of super-heater as well as the re-heater in power stations. In comparison to the use of spring loaded safety valves the number of installed components can be reduced drastically. On the super-heater the control function of the HP bypassstation will be combined according to TRD with the safety function. The re-heater is usually protected by a safety valve type VSH. High tightness up to set pressure due to high closing forces Small opening and closing pressure differences Reseating pressure widely adjustable High setting accuracy and reproducibility Function independent of pressure losses in connected pipes High back pressure by silencer possible Opening of the safety valve possible from 0 bar system pressure Ideally suitable for sliding pressure plant operation Safety function can be combined with control function Test of the control function without opening of the safety valve With one unit more than one safety valve can be operated Buttwelding ends Design Controlled safety valve, hydraulically closed, in safety case opened by pressure and spring Diameter Inlet DN / 3 24 Set Pressure bar Orifice Diameter mm A182F12 / A217WC6 A182F22 / A217WC9 A182F91 position indicator ǀ 13

14 Control units for Pilot operated safety valves Type STE1-3 Control unit for pilot operated safety valves Type VS99 Pilot operated safety valve The efficiency of plant operation can be increased by application of pneumatically assisted operation on a spring loaded safety valve. The advantages of direct acting safety valve will be combined with the advantages of controlled safety valves. With the control unit STE4 a fully TÜV type tested system is available. All control paths are three times redundant and the unit is working according to the fail safe principle. The functions pressure sensing, electrical control and pneumatic operation are split in separate housings. This modular design enables a high flexibility in difficult conditions, i.e. long distances or specific safety requirements. High tightness up to set pressure by supplementary loading Small opening and closing pressure differences blow down widely adjustable High setting accuracy and reproducibility Lifting of the safety valve also below set pressure possible Pressure setting of safety valve during normal plant operation Check of the control function without operation of the safety valve With one unit more than one safety valve can be operated Medium operated safety valve for extra large capacities buttwelding ends TÜV type tested certified for gas and steam (special: two phase mixture for nuclear service) Diameter Inlet DN / 4 30 Set pressure bar Orifice Diameter mm A105 / A182F12 182F22 / A182F91 Position indicator, vacuum spring 14 ǀ

15 Control units for Pilot operated safety valves Type VS66 Spring loaded pilot valve Type EMS Solenoid pilot valve Used only with safety valves VS99 Design Steam pilot, spring loaded A216WCB / A217WC6 Solenoid as supplementary load, position indicators Qualification TÜV type tested certified (also nuclear service) Design Solenoid pilot, indirect acting for steam and water service EMS3 de-energized open EMS4 energized open EMF flanged version A105 / A182F12 Position indicator, available for different voltages ǀ 15

16 Combined Actuator with Control units Type EPRV A combination of the pneumatic actuated relief valve type SEP with the control unit type STE8 Application The Electro Pneumatic Relief Valve (EPRV) is designed to provide automatic or manual overpressure protection for steam boilers. It is configured for dependable service in superheated and saturated steam applications. Features and benefits Small opening and closing pressure difference High reproducibility Lifting of the SEP also below set pressure possible Adjustment control of the SEP without changing the system pressure Check of the control function without response of the SEP System pressure signal at pressure switch Compact Easy to operate Very ruggedly design for high pressure and temperature With removable seat insert, replacing the seat without develop the body (option) Simple replacement of parts, no special tools necessary. Technical data Standard size: 2 ½ - 4 Pressure: up to 350 barg (5000 psig) Temperature: up to 630 C (1150 F) Connection: Flanged or welded Body material: A105, A182 F11, A182 F22, A182 F91, A182 F92 Activation: Pneumatic 16 ǀ

17 Safety valve testing Type SESITEST Mobile test equipment for safety valves With SESITEST time and costs can be reduced significantly during plant shut-down. SESITEST enables the accurate assessment of set-pressure and other safety valve functional characteristics in situ under normal operating plant conditions. With SESITEST there is no need to raise the line pressure or to remove the valve from the plant. An air operated, low friction piston entes an opening force to the stem of the safety valve. This force makes up the difference between the system pressure and the set pressure. The signals are recorded on the connected Computer and the valve characteristics are determined automatically online. The system is very open, all signals can be visualized each time and there are many tools available for analysis and documentation. The software SESI has been specially designed by SEMPELL and incorporates our vast experience in operating and testing safety relief valves. The software also allows the selection of various test sequences and output documentation formats, and includes a database in which valve identification and test data can be stored furthermore additional graphical analysis and calculations can be carried out with our software package. ǀ 17

18 18 ǀǀ Sempell ǀ Product ǀ overview overview SAFETY valves SAFETY valves