Stainless steel shell boilers

2003 ◽  
Keyword(s):  
Stainless Steel ◽  
Steel Shell

Design and Testing of D.C. Conduction Pump for Sodium Cooled Fast Reactor

2006 ◽  
Author(s):  
B. K. Nashine ◽  
S. K. Dash ◽  
K. Gurumurthy ◽  
M. Rajan ◽  
G. Vaidyanathan
Keyword(s):  
Magnetic Field ◽  
Stainless Steel ◽  
Low Voltage ◽  
Performance Testing ◽  
Liquid Sodium ◽  
Steel Shell ◽  
Low Voltage Operation ◽  
Under Construction ◽  
Reactor Operating ◽  
Copper Coil

DC Conduction pump immersed in sodium forms a part of Failed Fuel Location Module (FFLM) of 500 MWe Fast Breeder Reactor (PFBR) currently under construction. FFLM housed in control plug of the reactor, is used to locate the failed fuel sub-assembly due to clad rupture in the fuel pin. The DC conduction pump sucks the sodium from the top of fuel sub-assemblies through the selector valve and pumps the sodium to hold up for detecting the presence of delayed neutrons. Presence of delayed neutron is the indication of failure in the sampled fuel sub-assembly. The DC Conduction Pump was chosen because of its low voltage operation (2 V) where argon/alumina ceramic can provide required electrical insulation even at operating temperature of 560°C without much complication on the manufacturing front. Sampling of sodium from top of different sub-assemblies is achieved by operation of selector valve in-conjunction with the drive motor. FFLM requires the pump to be immersed in sodium pool at ∼560°C located above the fuel sub-assemblies in the reactor. The Pump of 0.36 m3/h capacity and developing 1.45 Kg/ cm2 pressure was designed, manufactured and tested. The DC Conduction Pump has a stainless steel duct filled with liquid sodium, which is to be pumped. The stainless steel duct is kept in magnetic field obtained by means of electromagnet. The electromagnet is made of soft iron and the coil made of copper conductor surrounds the yoke portion of electromagnet. The external DC source of 2000 Amps, 2 Volt is used to send current through sodium placed in the stainless steel duct and the same current is sent through copper coil of electromagnet for producing required magneto motive force, which in turn produces required magnetic field. The interaction of current in sodium (placed in stainless steel duct) and magnetic field produced by the electromagnet in the duct region produces pumping force in the sodium. Electromagnet, copper coil, stainless steel duct, copper bus bar etc. are encapsulated in stainless steel shell. Hydraulic characteristics, efficiency, cavitation free operation at operating temperatures was ascertained by conducting tests in sodium loop called Large Component Test Rig (LCTR). The pump was also endurance tested for 750 hrs. The performance tests on DC Conduction Pump indicate that the pump meets the target specification at reactor operating condition. This paper deals with design, construction and performance testing of DC Conduction Pump.

scholarly journals The characteristics of combustion reactions involving thermite under different shell materials

RSC Advances ◽  
2020 ◽  
Vol 10 (56) ◽  
pp. 33762-33769
Author(s):  
Jialin Chen ◽  
Tao Guo ◽  
Jiaxing Song ◽  
Miao Yao ◽  
Wen Ding ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Numerical Simulations ◽  
Steel Shell ◽  
Experimental Comparisons

To study the influence of tubular shell materials on the combustion of thermite, numerical simulations and experimental comparisons of the combustion efficiencies of thermite with PVC and stainless-steel shell materials were carried out.

Influence of a Thick Stainless Steel Shell on the Field Waveform of a Pulsed Magnet

2010 ◽  
Vol 159 (1-2) ◽  
pp. 341-344 ◽  
Author(s):  
T. Peng ◽  
Y. X. Song ◽  
F. Herlach ◽  
L. Li
Keyword(s):  
Stainless Steel ◽  
Steel Shell ◽  
Pulsed Magnet

Deposition of thick and adherent Teflon-like coating on industrial scale stainless steel shell using pulsed dc and RF PECVD

2010 ◽  
Vol 256 (13) ◽  
pp. 4334-4338 ◽  
Author(s):  
A. Satyaprasad ◽  
S.K. Nema ◽  
N.K. Sinha ◽  
Baldev Raj
Keyword(s):  
Stainless Steel ◽  
Industrial Scale ◽  
Steel Shell ◽  
Pulsed Dc

scholarly journals Design features of a high-vacuum steam jet pump and some results of its tests

2021 ◽  
Vol 2119 (1) ◽  
pp. 012167
Author(s):  
I V Petrova ◽  
V I Ermolov ◽  
A K Rebrov
Keyword(s):  
Stainless Steel ◽  
Saturated Vapor ◽  
High Vacuum ◽  
Working Fluid ◽  
Steel Shell ◽  
Original Design ◽  
Jet Pump ◽  
Heating Cable ◽  
Homogeneous Chemical ◽  
Made In

Abstract This paper presents an original design of a high-vacuum steam jet pump in which a heater made of a heating cable is immersed in a working fluid located in a stainless steel boiler. At the same time, the boiler itself is vacuum isolated from the pump housing. There is also a heater made of a heating cable in a stainless steel shell, made in the form of a spiral and immersed in a working fluid. Such an arrangement of the heater is possible only when a liquid with a homogeneous chemical composition and a low saturated vapor pressure is used as a working fluid in high-vacuum pumps.

Numerical Simulation of Plastic Deformation of Pressurized Oblate Spheroid-Inscribed Single-Curvature Shells

1999 ◽  
Vol 122 (1) ◽  
pp. 235-243 ◽  
Author(s):  
S. H. Zhang ◽  
J. Danckert ◽  
Z. R. Wang ◽  
K. B. Nielsen
Keyword(s):  
Numerical Simulation ◽  
Plastic Deformation ◽  
Stainless Steel ◽  
New Technology ◽  
Oblate Spheroid ◽  
Experimental Results ◽  
Steel Shell ◽  
Finite Element Code ◽  
Explicit Finite Element ◽  
Oblate Spheroidal

The integral hydro-bulge forming (IHBF) technology is used for manufacturing oblate spheroidal shells. A mild steel oblate spheroidal shell and a stainless steel shell were manufactured by using this new technology. The IHBF processes of the experimental shells are simulated by using an explicit finite element code, the numerical results are discussed and compared with the experimental results. Based on the numerical simulations and experimental results, a few suggestions are made for improving the new technology. [S1087-1357(00)71201-9]

Influence of Package on Micro-Accelerometer Sensitivity

2013 ◽  
Vol 562-565 ◽  
pp. 1367-1372
Author(s):  
Ping Li ◽  
Shi Qiao Gao ◽  
Lei Jin ◽  
Hai Peng Liu ◽  
Yun Bo Shi
Keyword(s):  
Stainless Steel ◽  
Elastic Modulus ◽  
Experimental Test ◽  
Steel Shell ◽  
Ceramic Shell ◽  
Theory Analysis ◽  
Key Technologies ◽  
Micro Accelerometer

Package is one of the key technologies for micro-accelerometer. This paper researched the influence of package on the sensitivity of self-designed piezoresistive accelerometer. Based on the designed package method, the effect of thickness and elastic modulus of die adhesive, package shell materials and signal connection wires on the sensitivity of the sensor were studied by theory analysis, simulation and experimental test. According to results, the sensitivity of micro-accelerometer would be increased with the increasing thickness of die adhesive and decreased with increasing elastic modulus and the quantity of the die adhesive; besides, compared with accelerometer packaged by ceramic shell, the sensitivity of accelerometer packaged with the stainless steel shell was much bigger; meanwhile, the output sensitivity of the sensor varied with length of signal connection wire.

Stainless steel shell boilers

2015 ◽  
Keyword(s):  
Stainless Steel ◽  
Steel Shell

scholarly journals Effect of Zirconia on Hydrothermally Synthesized Co3O4/TiO2 Catalyst for NOx Reduction from Engine Emissions

Catalysts ◽  
2020 ◽  
Vol 10 (2) ◽  
pp. 209 ◽  
Author(s):  
Muhammad Habib Ur Rehman ◽  
Tayyaba Noor ◽  
Naseem Iqbal
Keyword(s):  
Thermal Stability ◽  
Stainless Steel ◽  
Steel Wire ◽  
Nox Reduction ◽  
Steel Shell ◽  
Engine Emissions ◽  
Time Activity ◽  
Tio2 Catalyst ◽  
Wire Meshes ◽  
Motorcycle Engine

Effect of zirconia on the 6 wt.% Co3O4/TiO2 catalyst for NOx reduction is investigated in this paper. Co3O4/TiO2 catalyst was prepared by using hydrothermal method and then was promoted with zirconia by impregnation to get 8% wt. ZrO2-Co3O4/TiO2 catalyst. Catalysts were characterized by using XRD, SEM, and TGA. Catalysts real time activity was tested by coating them on stainless steel wire meshes, containing them in a mild steel shell and mounting them at the exhaust tailpipe of a 72 cm3 motorcycle engine. Zirconia promoted catalyst showed higher conversion efficiency of NOX than the simple Co3O4/TiO2 catalyst due to small crystalline size, fouling inhibition and thermal stability.

Sign in / Sign up

Export Citation Format

Share Document