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Operating & Design CHANGE CATEGORY

Operating & Design features, January 2018

Failure analysis of centrifugal pump impeller

This study analyzed the looseness failure between impeller and shaft.

 
Failure analysis of boric acid recycle pump shaft in nuclear power plant

Premature fracture failure of a boric acid pump shaft was studied by material inspection, macro and micro observation and mechanism analysis.

 

The surfactant effect on air/water flow in a multistage electrical submersible pump was studied.

 

A hydraulic pump degradation experiment was conducted to verify the proposed method.

 

Computational fluid dynamics was used to analyze the velocity field of the inflow and the pressure loading on the blades of reactor coolant pumps.

 

An innovative approach for modelling pumping tests in wells intersecting fractures is presented.

 

A cooling water circuit consisting of 3 cooling towers in parallel, 2 cooling water pumps in parallel and 11 heat exchangers in parallel is modelled.

 

A method using deep belief networks is proposed to detect multiple faults in axial piston pumps.

 

Free-layer visco-elastic damping material treatment can reduce the vibration and noise of axial piston pumps.

 

The clearance flow between the runner and the stationary parts greatly influences the efficiency and hydraulic thrust of pump-turbines.

 

Solar photovoltaic pumping systems are widely used in rural areas.

 

New methodology proposed that allows for fast, efficient pre-screening of hydraulic fluids and correlates well with the Vickers vane pump test.

 

An integrated model is presented in which the pump network, cooling water network and cooling tower are designed as a whole system.

 

Increased demand for multiphase pumps has made it necessary to optimize their operating performance.

 

This article presents a design for a novel electromagnetic micro-actuator prototype.

 

The twin-screw vacuum pump has an outstanding pumping performance during operation, and is widely used in the semiconductor industry.

 

External gear pumps are used in various industries to pump non-Newtonian viscoelastic fluids like plastics, paints and inks.

 

An oil pump simulation model for a hermetic reciprocating compressor is proposed.

 

Performance of a new cascaded compression-absorption heat pump is compared with that of compression, absorption and hybrid heat pumps.

 
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