SU983286A2 - Method of protecting turbomachine at load drops - Google Patents
Method of protecting turbomachine at load drops Download PDFInfo
- Publication number
- SU983286A2 SU983286A2 SU813280577A SU3280577A SU983286A2 SU 983286 A2 SU983286 A2 SU 983286A2 SU 813280577 A SU813280577 A SU 813280577A SU 3280577 A SU3280577 A SU 3280577A SU 983286 A2 SU983286 A2 SU 983286A2
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- turbomachine
- protecting
- during
- load drops
- time interval
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/02—Shutting-down responsive to overspeed
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C17/00—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith
- E05C17/02—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means
- E05C17/04—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing
- E05C17/12—Devices for holding wings open; Devices for limiting opening of wings or for holding wings open by a movable member extending between frame and wing; Braking devices, stops or buffers, combined therewith by mechanical means with a movable bar or equivalent member extending between frame and wing consisting of a single rod
- E05C17/14—Hook and eye, or equivalent
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Turbines (AREA)
- Control Of Positive-Displacement Air Blowers (AREA)
Description
Изобретение относится к теплоэнергетике и может быть использовано при автоматизации защиты турбомашины от недопустимого повышения час-j тоты вращения ротора.The invention relates to a power system and can be used to automate the protection of a turbomachine from an unacceptable increase in the frequency of rotation of the rotor.
По основному авт.св. № 914778 известен способ защиты турбомашины при сбросе нагрузки путем измерения скорости, ускорения и градиента ус- jq корения ротора, формирования защитных сигналов в соответствии с результатами измерения указанных величин и закрытия стопорных клапанов при наличии одновременно всех сформированных защитных сигналов ГЦ. ·’By main auto No. 914778, there is a known method of protecting a turbomachine during load shedding by measuring the speed, acceleration and gradient of acceleration of the rotor rooting, generating protective signals in accordance with the results of measuring the indicated values and closing the stop valves in the presence of all the generated protective signals of the HZ at the same time. · ’
Недостатком известного способа следует считать его несколько пониженную надежность из-за возможности ложного закрытия клапанов При качаниях в энер-__ госистеме.The disadvantage of this method should be considered its somewhat reduced reliability due to the possibility of false closing of the valves When swinging in the energy system.
Цель изобретения - повышение надежности.The purpose of the invention is to increase reliability.
Поставленная цель достигается тем, что согласно способу дополнительно из— меряют электрическую мощность и при -равенстве ее в течение заданного временного интервала нулю формируют второй дополнительный защитный сигнал.This goal is achieved by the fact that according to the method, the electric power is additionally measured, and if it is equal to zero, a second additional protective signal is formed to zero during a specified time interval.
Таким образом, команда., на закрытие клапанов турбомашины подается при одновременном наличии четырех защитных сигналов: о недопустимом повышении скорости ротора, о недопустимом повыиении ускорения ротора, о непревышении градиентом ускорения ротора заданного значения и О равенстве электрической мощности нулю в течение заданного временного интервала.Thus, the command., To close the valves of the turbomachine is given when there are four protective signals simultaneously: an unacceptable increase in rotor speed, an unacceptable increase in rotor acceleration, a rotor acceleration gradient not exceeding a predetermined value, and O electric power being equal to zero for a given time interval.
Величина временного интервала зависит от типа турбомашины и должна, с одной стороны, превышать время прохождения сигналом электрической мощности зоны нечувствительности соответствующего датчика при минимально возможной скорости изменения этого сигнала при качаниях в энергосистеме, а с другой стороны, быть достаточно малой, чтобы задержка формирования команды на закрытие стопорных клапанов не привела к аварийной ситуации. Для одного из типов турбомашин величина временного интервала оказалась равной 0,02 с.The size of the time interval depends on the type of turbomachine and should, on the one hand, exceed the time that the signal travels through the deadband of the corresponding sensor at the lowest possible rate of change of this signal during swings in the power system, and on the other hand, be small enough to delay the formation of the command by closing the stop valves did not lead to an emergency. For one type of turbomachine, the time interval was 0.02 s.
В результате одновременного использования четырех защитных сигналов уменьшается вероятность ложного закрытия стопорных клапанов при кача3 ниях в энергосистеме, и следовательно, повышается надежность.As a result of the simultaneous use of four protective signals, the likelihood of false closing of stop valves during swings in the power system is reduced, and therefore, reliability is increased.
Claims (1)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU813280577K SU983287A1 (en) | 1981-03-04 | 1981-03-04 | Apparatus for protecting turbomachine at load drops |
| SU813280577A SU983286A2 (en) | 1981-03-04 | 1981-03-04 | Method of protecting turbomachine at load drops |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU813280577A SU983286A2 (en) | 1981-03-04 | 1981-03-04 | Method of protecting turbomachine at load drops |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU914778A Addition SU267581A1 (en) | FILTER MATERIAL FOR WATER PREPARATION FILTERS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU983286A2 true SU983286A2 (en) | 1982-12-23 |
Family
ID=20955154
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU813280577K SU983287A1 (en) | 1981-03-04 | 1981-03-04 | Apparatus for protecting turbomachine at load drops |
| SU813280577A SU983286A2 (en) | 1981-03-04 | 1981-03-04 | Method of protecting turbomachine at load drops |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU813280577K SU983287A1 (en) | 1981-03-04 | 1981-03-04 | Apparatus for protecting turbomachine at load drops |
Country Status (1)
| Country | Link |
|---|---|
| SU (2) | SU983287A1 (en) |
-
1981
- 1981-03-04 SU SU813280577K patent/SU983287A1/en active
- 1981-03-04 SU SU813280577A patent/SU983286A2/en active
Also Published As
| Publication number | Publication date |
|---|---|
| SU983287A1 (en) | 1982-12-23 |
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