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flow turn-down ratios in excess of 100 to 1

Russian translation: диапазоны регулирования свыше 100:1

GLOSSARY ENTRY (DERIVED FROM QUESTION BELOW)
English term or phrase:flow turn-down ratios in excess of 100 to 1
Russian translation:диапазоны регулирования свыше 100:1
Entered by: Enote

06:50 Dec 8, 2019
English to Russian translations [PRO]
Tech/Engineering - Other
English term or phrase: flow turn-down ratios in excess of 100 to 1
Оборудование компании Woodward

The self-cleaning, shear-type metering action keeps the metering port free from performance-limiting deposits of gas condensates, contaminants, and system debris.
The valve minimizes the moving parts within the fuel metering element, actuator rotor, and redundant position feedback resolvers to maximize accuracy over the entire operating range.
Available actuator torque has been increased to provide more robust performance in the harshest conditions.
Accurate flow versus input signal characteristics are achieved on each valve version by precision forming of the valve metering port, the use of extended valve travels, and high precision resolvers for valve position feedback.
The GS valves can achieve flow turn-down ratios in excess of 100 to 1.
The positive flow shut-off rating meets the requirements of ANSI B16.5 Class IV across all valve sizes and ports.
The valve driver and wiring terminal box are integral with the valve assembly, eliminating interconnecting wiring, reducing package size requirements, and lowering the installed cost.
The on-board driver can be interfaced to the turbine control via redundant 4–20 mA input and feedback signals or through redundant CANopen control networks.
The GS-Series can be configured to accept both the 4–20 mA signal and CANopen command in a redundant configuration.
With this arrangement, if either demand signal fails, the driver will switch to the healthy input demand signal.
Alexander Semenov
Local time: 09:07
диапазоны регулирования свыше 100:1
Explanation:
turn-down ratio у нас обычно переводят как динамический диапазон, но для регулирующих клапанов это диапазон регулирования (нормативный термин), цитата из ГОСТ 12893-2005 Клапаны регулирующие односедельные, двухседельные и клеточные. Общие технические условия http://docs.cntd.ru/document/1200062260
3.1.14 диапазон регулирования Д: Отношение условной пропускной способности Kv к минимальной пропускной способности Kv/min.
У них ровно такое же определение, цитата из http://www.onyxvalve.com/uploads/docs/Turndown_of_Control_Va...
Turndown is the ratio of max to min flow. For a pinch valve, 10:1 is typical, so if you have a maximum flow of 5,000 SCFM, you can expect to maintain stable control down to 500 SCFM.
Of course, the valve can close drop tight (zero flow) but it’s difficult to maintain stable control between zero and your minimum controllable flow.

Selected response from:

Enote
Local time: 10:07
Grading comment
4 KudoZ points were awarded for this answer



Summary of answers provided
3 +1диапазоны регулирования свыше 100:1
Enote
3->
mk_lab


  

Answers


50 mins   confidence: Answerer confidence 3/5Answerer confidence 3/5
->


Explanation:
коэффициент рабочего регулирования расхода превышает 100 к 1

Т.е., эти регулирующие клапаны способны обеспечивать регулировку расхода/потока в пределах более 100/1

mk_lab
Ukraine
Local time: 10:07
Native speaker of: Native in RussianRussian, Native in UkrainianUkrainian
PRO pts in category: 20
Login to enter a peer comment (or grade)

4 hrs   confidence: Answerer confidence 3/5Answerer confidence 3/5 peer agreement (net): +1
диапазоны регулирования свыше 100:1


Explanation:
turn-down ratio у нас обычно переводят как динамический диапазон, но для регулирующих клапанов это диапазон регулирования (нормативный термин), цитата из ГОСТ 12893-2005 Клапаны регулирующие односедельные, двухседельные и клеточные. Общие технические условия http://docs.cntd.ru/document/1200062260
3.1.14 диапазон регулирования Д: Отношение условной пропускной способности Kv к минимальной пропускной способности Kv/min.
У них ровно такое же определение, цитата из http://www.onyxvalve.com/uploads/docs/Turndown_of_Control_Va...
Turndown is the ratio of max to min flow. For a pinch valve, 10:1 is typical, so if you have a maximum flow of 5,000 SCFM, you can expect to maintain stable control down to 500 SCFM.
Of course, the valve can close drop tight (zero flow) but it’s difficult to maintain stable control between zero and your minimum controllable flow.



Enote
Local time: 10:07
Native speaker of: Russian
PRO pts in category: 1131

Peer comments on this answer (and responses from the answerer)
agree  yaal
15 hrs
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