Experimental researches of dependences of lead coolant axial pumping on the lattice parameters of impellers profiles

Beznosov, A. V.; Lvov, Aleksandr Vyacheslavovich; Bokov, Pavel Andreevich; Bokova, T. A.; Razin, V.A.

doi:10.26583/npe.2017.1.13

Cited by 1 publication

(7 citation statements)

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“…The impeller blade incidence, α, was 16, 20, 24, and 28° for each blade bend option (β = 4°, β = 8°, β = 0°); and the shaft speed was n = 600, 700, 800, 900, 1000, and 1100 rpm. The experiments showed a major change in the pump performance depending on the bending angle of the chord's front one third: the difference reached 20 % with one and the same blade incidence (Beznosov et al 2019). The tests made it possible to choose the best design for the next test stage.…”

Section: Experimental Procedures and Key Resultsmentioning

confidence: 92%

“…1. Experimental studies into the dependences of the pump performance on the parameters of the straightening devices installed at the impeller flow outlet and inlet (Beznosov et al 2019(Beznosov et al , 2019a. For the three straightening device design modifications installed downstream of the impellers, the blade space flow inlets had the angles of 22, 24, and 28°, and the number of the straightening device blades was five.…”

Section: Experimental Procedures and Key Resultsmentioning

confidence: 99%

“…2. Experimental studies into the effects of the impeller inlet flow spin relative to the pump impeller rotating direction (Beznosov et al 2019). The studies were conducted with changeable parts mounted at the pump inlet with the deflection angles of the four blades being -18°, 0°, and +18°.…”

Section: Experimental Procedures and Key Resultsmentioning

confidence: 99%

“…3. Experimental studies into the dependences of the pump performance (head, delivery rate, efficiency) on the impeller cascade parameters (Beznosov et al 2014(Beznosov et al , 2014a(Beznosov et al , 2017. The effects of the key cascade parameters were studied, including, as shown in (Karelin 1975, Lomakin 1966, Budov 1986, Mikhaylov and Malyushenko 1977, Rozhdestvenskiy 1977, Papyr 1970), the following: α is the cascade blade incidence; Z is the number of the impeller blades; l/t is the cascade solidity.…”

Section: Experimental Procedures and Key Resultsmentioning

confidence: 99%

“…4. Experimental studies into the dependences of the pump performance on the cascade blade inlet bend geometry (Beznosov et al 2019). Impellers of three designs with four flat (non-airfoil) blades of a plate of δ = 4.0 mm were mounted successively to the pump shaft for the studies.…”

Section: Experimental Procedures and Key Resultsmentioning

confidence: 99%

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Experimental studies into the performance of the lead coolant axial pump wet ends to justify main circulation pumps for the HMLC reactor plant circuits

Beznosov¹,

Bokov²,

Lvov³

et al. 2020

NUCET

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The paper presents the results of the studies to justify the design solutions for the main circulation pumps of the heavy liquid-metal cooled reactor plant circuits. A substantial difference has been shown in the performance of pumps for the heavy liquid-metal coolant transfer. The studies have confirmed the qualitative difference in the cavitation performance of coolants, the state of the gases and vapors they contain, the influence of supply and discharge devices, and the effects of the impeller blade section performance and geometry and the hub-tip ratio on the pump performance. The studies were performed based on NNSTU’s lead-cooled test facilities with the coolant temperature in a range of 440 to 550 °C and the coolant flow rate of up to 2000 t/h. The outer diameter of the impellers and the straightening devices was about 200 mm, and the thickness of the flat 08Kh18N10T-steel blades was 4.0 mm and that of the airfoil blades was up to 6.0 mm. The pump shaft speed changed in a stepped manner from 600 rpm to 1100 rpm after each 100 rpm. The studies were conducted to justify the engineering and design solutions for pumps as applied to conditions of small and medium plants with fast neutron lead cooled reactors currently under investigation at NNSTU (BRS-GPG). The experimental results can be recommended for use to design other HLMC transfer pumps.

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Section: Experimental Procedures and Key Resultsmentioning

confidence: 92%

Section: Experimental Procedures and Key Resultsmentioning

confidence: 99%

Section: Experimental Procedures and Key Resultsmentioning

confidence: 99%

Section: Experimental Procedures and Key Resultsmentioning

confidence: 99%

Section: Experimental Procedures and Key Resultsmentioning

confidence: 99%

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