Glossary entry (derived from question below)
English term or phrase:
Impeller cut
Russian translation:
уменьшение диаметра рабочего колеса
Added to glossary by
arinaotm
Sep 24, 2013 14:27
10 yrs ago
English term
Impeller cut
English to Russian
Other
Energy / Power Generation
Water Supply Pump Control Standard.
3. Pump discharge pressure set values and their review
Nos. 1 to 3 pump discharge pressure set values
Nos. 1 to 3 pump suction pressure set values
Hydraulic pressures at usage destinations shall be summed every year to review the pump discharge pressure. If there is surplus in the discharge pressure, improvement actions shall be taken.
4. Control of pump motors
Voltage of Nos. 1 to 3 pumps
Current of Nos. 1 and 2 pumps
No. 3 pump current
Remarks: Impeller cut or conversion to impeller-based form
3. Pump discharge pressure set values and their review
Nos. 1 to 3 pump discharge pressure set values
Nos. 1 to 3 pump suction pressure set values
Hydraulic pressures at usage destinations shall be summed every year to review the pump discharge pressure. If there is surplus in the discharge pressure, improvement actions shall be taken.
4. Control of pump motors
Voltage of Nos. 1 to 3 pumps
Current of Nos. 1 and 2 pumps
No. 3 pump current
Remarks: Impeller cut or conversion to impeller-based form
Proposed translations
(Russian)
| 3 | уменьшение диаметра рабочего колеса |
Alar
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Proposed translations
23 mins
Selected
уменьшение диаметра рабочего колеса
Impellers can be cut down to keep the application close to the pumps best efficiency point :
Theoretically up to twenty five percent of an impeller diameter can be removed, but any time you remove more than ten percent of the maximum impeller diameter the affinity laws are no longer accurate because of slippage between the impeller outside diameter and the pump volute.
Changing the impeller diameter changes the head, capacity and power requirements.
The capacity can be increased by under filing the vane tips, but the discharge head and the power requirement will automatically adjust to the values where the pump curve intersects the system curve.
If you intend to cut down the impeller diameter, the impeller should be cut down in at least two steps and tested after each step.
http://www.mcnallyinstitute.com/10-html/10-1.html
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Note added at 21 час (2013-09-25 12:07:39 GMT)
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По-моему, conversion to impeller-based form означает переоборудование насоса с целью уменьшения его диаметра. А все предложение Impeller cut or conversion to impeller-based form я перевел бы примерно так: С уменьшенным диаметром рабочего колеса или корпуса.
Theoretically up to twenty five percent of an impeller diameter can be removed, but any time you remove more than ten percent of the maximum impeller diameter the affinity laws are no longer accurate because of slippage between the impeller outside diameter and the pump volute.
Changing the impeller diameter changes the head, capacity and power requirements.
The capacity can be increased by under filing the vane tips, but the discharge head and the power requirement will automatically adjust to the values where the pump curve intersects the system curve.
If you intend to cut down the impeller diameter, the impeller should be cut down in at least two steps and tested after each step.
http://www.mcnallyinstitute.com/10-html/10-1.html
--------------------------------------------------
Note added at 21 час (2013-09-25 12:07:39 GMT)
--------------------------------------------------
По-моему, conversion to impeller-based form означает переоборудование насоса с целью уменьшения его диаметра. А все предложение Impeller cut or conversion to impeller-based form я перевел бы примерно так: С уменьшенным диаметром рабочего колеса или корпуса.
Note from asker:
| conversion to impeller-based form??? |
4 KudoZ points awarded for this answer.
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