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The correct valves, pipes and fittings are important for the successful operation of power generation facilities. The equipment includes products with multifunctional designs to establish effective connection and sealing methods, as well as better connection integrity to ensure the safe operation of thermal power plants, nuclear power plants and renewable energy power plants. When promoting their products, manufacturers say that installation costs are lower, safety and efficiency are higher, and planned and unplanned maintenance downtime are reduced. Some leading power plant valve, pipe and fitting manufacturers and service companies have their own features here.
Earlier this year, Boldrocchi successfully tested its new 7m by 7m shunt damper for gas turbines. The diverter valve is a three-way valve that can discharge the gas turbine exhaust gas into the atmosphere through the bypass chimney or into the heat recovery steam generator. The damper has a very high capacity and exceeds the standard in terms of geometric sealing, sealing pressure and closing time, while reducing maintenance and simplifying transportation and assembly. This new diverter also allows a rapid transition from a single cycle system to a combined cycle system. It is designed to withstand temperatures up to 700C (1,300F), vibration and gas turbulence, as well as increased component wear. The diverter is equipped with an airtight system, which can make the airtightness of the exhaust gas reach 100% (fully sealed). The air seal pressure is greater than +500 millimeters of water column (mm wc), and original equipment manufacturers usually require +50 mm wc. The shunt is equipped with a hydraulic actuator. According to customer requirements, the normal operation time is less than 60 seconds, and the emergency shutdown time is less than 20 seconds. However, the shunt is designed and manufactured to obtain a shorter driving time. Boldrocchi designed this diverter to facilitate transportation and assembly. The splitter can be pre-assembled into several pieces, or it can be delivered fully assembled (in a single part). Boldrocchi designed this splitter, which can be easily installed under the single-cycle exhaust pipe instead of the existing elbow. Boldrocchi, Biassono, Italy
Spirax Sarco provides products and services for thermal energy solutions. The Spira-trol modular control valve has been pre-commissioned for the application before leaving the factory, enabling fast “plug and play” installation. Spira-trol’s modular design, with a quick-change “clamp-in-place” valve seat, means that its responsibilities can be changed to adapt to changing factory conditions instead of replacing the entire valve. The self-aligning clamp-in-place valve seat also simplifies maintenance, so no special tools are required, and there is no need to remove the valve from the pipeline. Compared with the screw-in seat design, which is usually stuck in place, this achieves considerable cost savings, requiring the valve to be disassembled, resulting in long plant shutdowns. Electric and pneumatically driven Spira-trol valves ranging from 1/2 inch to 4 inches are available, up to the flange ANSI 150 version. With a complete Spira-trol series that can be expanded to 8 inches and an ANSI 600 pressure range, Spirax Sarco can provide control solutions ranging from heating, ventilation and air conditioning, process and power to demanding service applications. Spiraxq, Cheltenham, United Kingdom
Clark Valve announced that its proprietary gate valve design has received API 641 certification, which is the first control valve to be certified for low fugitive emissions performance. The API 641 standard applies to all stem sealing materials and requires a strict maximum allowable leakage of 100 parts per million (ppmv). The API test standard requires the valve to undergo 610 cycles under extreme temperature fluctuations to evaluate the emission performance during the accelerated life cycle. The fugitive emissions of traditional valve designs in industrial facilities are the main cause of air pollution, and the unique design of gate valves provides excellent sealing at the valve stem, thereby reducing these emissions. Yarmouth Research and Technology conducted independent tests on the patented gate valve and proved that the valve passed the test, and the leakage was less than 20 ppmv, well below the 100 ppmv limit. The unique design of the globe valve is already the best control valve in the world, and it is also the most environmentally friendly control valve ever certified. Clark Valve, Miami, Florida
Westinghouse Electric has introduced the Sigma Reactor Coolant Pump (RCP) seal, designed to seamlessly integrate as Westinghouse RCP’s No. 1 seal replacement and industrial accessories. It aims to provide reliable services for up to 12 years, saving costs, reducing doses and improving the risk profile of nuclear power plants. Sigma seals are optimized for predictable performance and reduced environmental sensitivity, and are supported by more than 20,000 hours of development and qualification testing. Sigma seals are fully compatible with Westinghouse SHIELD passive thermal shutdown seals. The company’s approach provides a comprehensive and cost-effective sealing solution with excellent reliability and longevity, and integrated passive safety features. The new Sigma seal design is based on more than 40 years of Westinghouse RCP seal development experience and operating data. Westinghouse RCP seals have successfully operated for more than 150 million hours in more than 600 RCPs in pressurized water reactors worldwide. Westinghouse Electric Company, Monroeville, Pennsylvania
Everlast Valve’s boiler blowdown valve uses the company’s patented rotary disc valve technology, which provides consistently excellent and long-lasting performance. These manual on-off valves effectively discharge the sludge formed in the steam boiler. They have a right-angle configuration with quick opening and slow opening, and are suitable for applications including steam boiler blowdown, surface blowdown, water column discharge, and shut-off and shut-off valves. Everlast’s boiler blowdown valve is based on the ASME Boiler and Pressure Vessel Section 1 Code and ANSI B16.31 Power Piping Code. These valves are designed to significantly reduce your maintenance costs and downtime. The valve seat and disc are made of stainless steel, the valve is made of cast iron or carbon steel, and it is connected by thread or flange. Eternal Valve in South Plainfield, New Jersey
The DSCV-SA (Direct Steam Transfer Valve-Steam Atomization) from SPX FLOW brand Copes-Vulcan meets the needs of operational excellence and closes very tightly. It eliminates thermal shock, has a high adjustable range, size and installation flexibility, and low maintenance costs. The DSCV-SA Copes-Vulcan pressure reducing valve has an angular structure, the steam inlet is connected by a branch, and the steam outlet is connected by a pipe. According to the customer’s preference, the connection can be flange connection or butt welding connection. These devices are manufactured in two parts to provide customers with greater flexibility. The high-pressure side of the unit adopts a casting or forging structure, and the low-pressure outlet part adopts an assembled structure. The valve is equipped with a bolted bonnet closure device, which is suitable for pressure ratings up to and including ANSI 900#, and suitable for pressure seal closure devices up to and including ANSI 4500#. The valve can be equipped with single-stage HUSH, multi-stage HUSH or Copes-Vulcan RAVEN trim technology, depending on the pressure drop and meet the requirements of a specific noise level. The valve is equipped with a high-pressure balanced, single-seat trim structure, and adopts the concept of tandem trim pilot operation to ensure a tight and repeatable Class V closure in accordance with ANSI/FCI 70-2. Copes-Vulcan / SPX FLOW, McKean, Pennsylvania
Huntingdon Fusion Techniques HFT now produces custom argon feed hose assemblies with sealed joints, which is an advancement in welding purge technology. The natural rubber feed hose is equipped with an argon gas regulator, one end of which is directly connected to any range of inflation pipes and pipe welding purge systems, and the other end is directly connected to the gas source. These hose assemblies can also be used to transport other gases that require tightness. A series of leak-proof adapters are provided for connecting the argon regulator, and the other end of the pre-installed connection is connected to all HFT Argweld welding and purging systems. All these high-quality accessories help eliminate the welding connection difficulties that welders may encounter in the field. The argon feed hose can also be supplied to all other tungsten inert gas/gas tungsten arc welding (TIG/GTAW) welding machines as required, with its own special accessories. These hoses are readily available and standard length ranges are 30 meters (m), 25 m, 20 m, 15 m, 10 m and 5 m. It conforms to the British Standard BS EWN 599 quality standard. The temperature range of each argon gas feed hose is –30C to 80C, and the safety factor is three times the working pressure of 20 bar (300 psi). Huntingdon Fusion Techniques HFT, Bury Port, UK
The Victaulic QuickVic SD Installation Ready System is a flat-end pipe connection technology designed for carbon steel systems with a size of 2 inches/DN50 and below. It is the most economical and efficient pipe connection solution for small diameter systems. Compared with the current pipe materials and installation methods, it can significantly save the total installation cost. The system includes ready-to-install connectors, fittings and valves, as well as PC3110 cutting and marking tools. Available in sizes from 1/2 inch to 2 inches/DN15 to DN50, these products can be used for carbon steel pipes with wall thicknesses of 10 to 80, with a maximum working pressure and rated temperature of 300 psi/2068 kPa/21 bar and 250F/120C (with EPDM【 Ethylene propylene diene monomer] rubber gasket). Easton Victaulic, Pennsylvania
The ELSCAN pipe and elbow scanner semi-automatically scans straight and elbow pipes with an outer diameter of 4 to 42 inches. This lightweight dual-axis scanner collects high-resolution thickness measurements by using multi-element or phased array ultrasonic transducers to help power plants avoid flow-accelerated corrosion. The adjustable magnet provides active contact with the pipeline and elbow being inspected for effective measurement. Using two encoding shafts, the scanner can inspect any part or all of the pipe elbow. WesDyne is a wholly-owned subsidiary of Westinghouse Electric Co., a global supplier of non-destructive testing (NDE) products and services, and a recognized leader in the power industry. WesDyne is committed to creating and applying innovative and advanced NDE technology solutions to solve ultrasound Inspection challenges. Scanners can be purchased separately for self-inspection, or the WesDyne NDE inspection team can provide comprehensive, cost-effective and timely pipeline inspections. WesDyne International, Madison, Pennsylvania
Beck actuators are reliable solutions for industrial valve control. They provide positioning accurate to 0.1 degree and solve the inherent problems of other actuator technologies including traditional electric actuators, pneumatic actuators and hydraulic actuators. Beck actuators require almost no maintenance and can be positioned consistently regardless of load. They require very little power to operate, and there is no need to worry about load limitations, because Beck actuators will not overheat or burn out. All Beck actuators can work continuously without modulation or operating time restrictions, regardless of service, running 24/7. The new Group 57 rotary valve actuator adds some features and functions to meet the requirements of many remote and hazardous locations. New features and advantages include the ability to operate on a 12-48 VDC power supply, making it ideal for use with solar panels. They have Class I, Division 1, Groups B, C and D hazardous location ratings. They have a built-in electrical fail-safe function and an optional internal super capacitor backup power supply. Beck-Harold Beck and Sons, Newtown, Pennsylvania
Conval provides Swivldisc high-performance, severe service gate valves with sizes from 1/2 inch to 4 inches and ASME/ANSI pressure ratings to 4500#. Standard structural materials are carbon steel 216 GR WCB, Chromalloy SA-217 GR WC9, SA-217 GR C12A and SA-351 CF3M. Other materials can be provided on request. Options include bypass, air or motor actuators. The Swivldisc gate valve has an excellent wedge gate design with a flexible disc. This disc allows perfect alignment of the valve seat surface and establishes a tight seal that cannot be achieved with standard wedge gates. Cornwall, Enfield, Connecticut
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Post time: Jun-25-2021
