CN106968876B - A kind of turbine-generator units technical water supply control method - Google Patents
A kind of turbine-generator units technical water supply control method Download PDFInfo
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- CN106968876B CN106968876B CN201710356995.9A CN201710356995A CN106968876B CN 106968876 B CN106968876 B CN 106968876B CN 201710356995 A CN201710356995 A CN 201710356995A CN 106968876 B CN106968876 B CN 106968876B
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- valve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B15/00—Controlling
- F03B15/02—Controlling by varying liquid flow
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Hydraulic Turbines (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Control Of Water Turbines (AREA)
Abstract
The invention discloses a kind of turbine-generator units technical water supply control methods, including water pump water-supply control and top cover water intaking control method；Under top cover water-supply method, in case of following three kinds of situations, it will automatically switch to water pump water supply.1) water main's pressure or flow are delayed lower than setting value switches to drainage position for triple valve, then opens water pump.2) top cover pressure is high.Top cover pressure is taken respectively from top cover water intaking general pipeline and top cover relief valve forefront pressure transmitter, and triple valve is switched to drainage position by delay when wherein any one is high, opens simultaneously two-way top cover relief valve draining motor-driven valve, carries out pressure release.Triple valve switches to drainage position and the high involution of top cover pressure, then closes draining motor-driven valve, while opening water pump.3) a monitoring distant place, which is issued an order, is switched to water pump water supply from top cover water intaking.The turbine-generator units technical water supply control method keeps way of supplying water safe and reliable by optimizing to turbine-generator units technical water supply control flow.
Description
Technical field
The present invention relates to hydraulic turbine technical water supply technical field, specifically a kind of turbine-generator units technical water supply controlling party
Method.
Background technique
The water supply in power station includes technical water supply, fire fighting supply and living water.Technical water supply is also known as production water supply, mainly
Effect be running equipment is carried out it is cooling (such as the thrust bearing of generator, guide bearing, aerial cooler, turbine guide bearing,
Main transformer), the cleaning water source of certain pressure followed by is provided to the working seal of the hydraulic turbine, be also used to be lubricated (such as
Deep well pump rubber tile guide bearing) and hydraulic pressure operation (such as jet pump, main valve of high-head power station etc.), it is to guarantee water power
The indispensable component part of the safe and economical operation stood.The hydrogenerator fetched water using top cover, machine set technology water supply one
As using top cover water intaking based on, water pump supply water supplemented by, as shown in Fig. 1, this figure is typical turbine-generator units technical water supply
Unit water-supply map, the safety valve in figure can not only be automatically opened by water pressure, be may also rely on control draining motor-driven valve and beaten
It opens.The control method existing defects of existing turbine-generator units technical water supply influence to supply water safe and reliable.
Summary of the invention
The purpose of the present invention is to provide a kind of turbine-generator units technical water supply control methods, to solve above-mentioned background skill
The problem of being proposed in art.
To achieve the above object, the invention provides the following technical scheme:
A kind of turbine-generator units technical water supply control method, including water pump water-supply control and top cover water intaking controlling party
Method；
The water pump water-supply control, steps are as follows:
S001: when way of supplying water is under water pump way of supplying water, and triple valve in water supply position or drainage position, then enabling should
Water pump water-supply control；
S002: it receives out technical water supply and enables and output technical water supply switching locking；
After S003: step S002 carries out, whether triple valve is judged in drainage position, if so, carry out step S005,
Otherwise, step S004 is carried out；
S004: triple valve is opened to drainage position；
S005: starting main pump；
S006: it if main pump operates normally, carries out step S008 and otherwise then carries out step S007；
S007: fault alarm stops the pump that can not normally start；
S008: when technical water supply general pipeline flow or pressure are lower than setting value, then be delayed 30S judgment technology water main again
Whether flow or pressure still are below setting value, if so, carrying out step S009, otherwise, guarantee operating status；
S009: stopping main pump, and the standby pump of delayed startup carries out step S010, otherwise, walked if standby pump operates normally
Rapid S007；
S010: judging whether water main's pressure and flow are normal, if so, carrying out step S012, otherwise, carries out step
S011；
S011: fault alarm, locking pump switching；
S012: judging whether to receive and stop the order of technical water supply machine, if so, otherwise carrying out step S013 remains operational shape
State；
S013: pump of cutting off the water；
S014: terminate；
The top cover water intaking control method, steps are as follows:
S100: when way of supplying water is under top cover water-supply method, and two-way top cover relief valve draining motor-driven valve closes entirely, and threeway
Valve then enables top cover water intaking control method in water supply position or drainage position；
S101: it receives out technical water supply and enables and output technical water supply switching locking；
After S102: step S101 carries out, triple valve is judged whether in water supply position, if so, directly carrying out step
Otherwise S103 carries out step S102；
S102: triple valve is opened to position of supplying water；
S103: monitoring generating unit speed releases technical water supply switching locking when generating unit speed is greater than Ne95%；
S104: when technical water supply general pipeline flow or pressure are lower than setting value, then be delayed 30S judgment technology water main again
Whether flow or pressure still are below setting value, if so, carrying out step S004, otherwise, guarantee operating status；
S105: if a monitoring distant place, which is issued an order, is switched to water pump water supply from top cover water intaking for way of supplying water, carrying out step S004, no
Then, guarantee operating status；
S106: when top cover pressure is greater than the set value, delay 5S judges whether top cover pressure is greater than the set value again, if
It is then to carry out step S107, otherwise, carries out step S114；
S107: opening two-way top cover relief valve and drain motor-driven valve, if two-way top cover relief valve draining motor-driven valve is normally-open,
Step S004 is then carried out, step S108 is otherwise carried out；
S108: judge top cover relief valve draining motor-driven valve whether standard-sized sheet, if so, carry out step S110 otherwise walked
Rapid S109:
S109: top cover relief valve drains motor-driven valve fault alarm；
S110: switching three-way valve to drainage position；
S111: it closes top cover relief valve and drains motor-driven valve, and carry out step S114；
S112: it in stopping process, when generating unit speed is less than Ne95%, outputs technical water supply mode and switches locking；
S113: it receives and stops technical water supply and enable and release technical water supply mode to switch locking；
S114: terminate.
As a further solution of the present invention: step S001 replacement are as follows: when way of supplying water is under water pump way of supplying water, and three
Port valve then enables the water pump water-supply control in drainage position.
As the present invention further scheme: step S100 replacement are as follows: when way of supplying water is under top cover water-supply method, and
Two-way top cover relief valve draining motor-driven valve closes entirely, and triple valve then enables top cover water intaking control method in water supply position.
Compared with prior art, the beneficial effects of the present invention are:
The turbine-generator units technical water supply control method, by being carried out to turbine-generator units technical water supply control flow
Optimization design keeps way of supplying water safe and reliable.
Detailed description of the invention
Fig. 1 is turbine-generator units technical water supply system figure.
Fig. 2 is the flow diagram of turbine-generator units technical water supply control method of the present invention.
Specific embodiment
Technical solution of the present invention is described in more detail With reference to embodiment.
Referring to Fig. 2, a kind of turbine-generator units technical water supply control method, including water pump water-supply control and top cover
Water intaking control method；The water pump water-supply control, steps are as follows: S001: when way of supplying water is under water pump way of supplying water, and
Triple valve then enables the water pump water-supply control in water supply position or drainage position, certainly, may be otherwise and only judges threeway
Valve, if booting forefathers are that triple valve is switched to drainage position in water supply position, it is automatic to can avoid triple valve in drainage position
When switching to drainage position from water supply position, there is handover failure, three-way valve position is indefinite, and water pump can not start in time, causes
Water supply flow and insufficient pressure, cause boot failure；S002:, which receiving out technical water supply order, and outputs technical water supply switching closes
Lock；After S003: step S002 carries out, whether triple valve is judged in drainage position, if so, carry out step S005, otherwise,
Carry out step S004；S004: triple valve is opened to drainage position；S005: starting main pump；S006: it if main pump operates normally, is walked
Otherwise rapid S008 then carries out step S007；S007: fault alarm stops the pump that can not normally start；S008: work as technical water supply
General pipeline flow or pressure are lower than setting value, then whether judgment technology water main flow or pressure still are below the 30S that is delayed again
Otherwise setting value, guarantees operating status if so, carrying out step S009；S009: stop main pump, the standby pump of delayed startup, if standby
Pump operates normally, then carries out step S010, otherwise, carries out step S007；S010: whether just to judge water main's pressure and flow
Often, if so, carrying out step S012, otherwise, step S011 is carried out；S011: fault alarm, locking pump switching；S012: judgement is
No receive stops the order of technical water supply machine, if so, otherwise carrying out step S013 remains operational state；S013: pump of cutting off the water；S014:
Terminate.
The top cover is fetched water control method, and steps are as follows: S100: when way of supplying water is under top cover water-supply method, and two-way
Top cover relief valve draining motor-driven valve closes entirely, and triple valve then enables top cover water intaking controlling party in water supply position or drainage position
Method may be otherwise certainly and only judge triple valve in water supply position, if booting forefathers are by threeway Vavle switching in drainage position
To water supply position, when avoidable triple valve switches to water supply position from drainage position automatically, there is handover failure or switching overtime,
Lead to water supply flow and insufficient pressure, cause boot failure, in addition, entry condition two-way top cover relief valve draining motor-driven valve is complete
It closes, is to lead to water supply flow and insufficient pressure in order to avoid top cover relief valve draining motor-driven valve is opened, lead to boot failure；
S101: it receives out technical water supply and enables and output technical water supply switching locking, outputing technical water supply switching locking is in order to prevent
Since guide vane opening is smaller in start process, general pipeline flow and pressure are lower, cause to switch to water pump way of supplying water；S102: step
After rapid S101 is carried out, judge otherwise triple valve whether in water supply position, is walked if so, directly carrying out step S103
Rapid S102；S102: triple valve is opened to position of supplying water；S103: monitoring generating unit speed is released when generating unit speed is greater than Ne95%
Technical water supply switching locking；S104: when technical water supply general pipeline flow or pressure are lower than setting value, then the 30S that is delayed judges skill again
Whether art water main flow or pressure still are below setting value, if so, carrying out step S004, otherwise, guarantee operating status；
S105: if a monitoring distant place, which is issued an order, is switched to water pump water supply from top cover water intaking for way of supplying water, step S004 is carried out, otherwise, is guaranteed
Operating status；S106: when top cover pressure is greater than the set value, delay 5S judges whether top cover pressure is greater than the set value again, if
It is then to carry out step S107, otherwise, carries out step S114；S107: it opens two-way top cover relief valve and drains motor-driven valve, if two-way
Top cover relief valve draining motor-driven valve is normally-open, then carries out step S004, otherwise carries out step S108；S108: judge that top cover is let out
Pressure valve drain motor-driven valve whether standard-sized sheet, if so, carry out step S110, otherwise, carry out step S109:S109: top cover relief valve
Drain motor-driven valve fault alarm；S110: switching three-way valve to drainage position；S111: closing top cover relief valve and drain motor-driven valve, and
Carry out step S114；S112: in stopping process, when generating unit speed is less than Ne95%, outputing technical water supply mode and switch locking,
Outputing technical water supply mode to switch locking is prevented since guide vane closes entirely in stopping process, and general pipeline flow and pressure are lower, cause
Switch to water pump water supply；S113: it receives and stops technical water supply and enable and release technical water supply mode to switch locking；S114: terminate.
The working principle of the invention is: under water pump way of supplying water, machine set technology water management system receives way of supplying water
After opening the order of technical water supply machine, top cover water intaking three-way valve position is first determined whether, if triple valve is in water supply position, switching three-way valve
To drainage position, water pump is then opened.At this time if when technical water supply general pipeline flow or pressure are lower than setting value, delay judgement is first
First stop main pump, then be delayed and open stand-by pump, if flow or pressure are still low, be latched switching water pump, this design is for water pump
Frequent rotation.It needs to release rotation after locking water pump rotation manually and is latched that (this latch buttons can be on the man-machine boundary of technical water supply control cabinet
It is arranged on face), otherwise flow or water pump will not switch when low pressure, but still can switch water pump when fault of water pump.Unit skill
Art water supply, which receives, stops also release water pump switching locking after technical water supply enables, again can be with normal rotation after booting next time.
When way of supplying water is under top cover water-supply method, after machine set technology water management system receives out technical water supply order, head
Top cover water intaking three-way valve position is first judged, if triple valve is in drainage position, switching three-way valve to position of supplying water.It monitors at this time
System outputs always locking top cover water intaking and switches to water pump water supply order, although in top cover water intaking triple valve handoff procedure, unit skill
Art water supply flow or pressure are low, still will not switch to water pump water supply.When generating unit speed is greater than 95%, guide vane is in zero load at this time
Aperture, the top cover water intaking of delay releasing at this time switch to water pump water supply locking and enable, and water supply flow and pressure still compare rated value at this time
It is small, but it is enough to ensure that each spot temperature of unit does not exceed alarming value.2.2.3. after being switched on successfully
Under top cover water-supply method, in case of following three kinds of situations, it will automatically switch to water pump water supply.
1) water main's pressure or flow are delayed lower than setting value switches to drainage position for triple valve, then opens water pump.
2) top cover pressure is high.Top cover pressure is taken respectively from top cover water intaking general pipeline and top cover relief valve forefront pressure transmitter,
Triple valve is switched to drainage position by delay when wherein any one is high, opens simultaneously two-way top cover relief valve draining motor-driven valve,
Carry out pressure release.Triple valve switches to drainage position and the high involution of top cover pressure, then closes draining motor-driven valve, while opening water pump.
3) a monitoring distant place, which is issued an order, is switched to water pump water supply from top cover water intaking.It is received under top cover water-supply method due to thrust bearing
Hydraulic thrust is larger, causes thrust bearing shoe valve temperature more slightly higher than under water pump way of supplying water, and top cover vibration is also larger.If it find that thrust
Wa Wen deteriorates or top cover vibration is big, then can be issued an order by a Central Control Room distant place and switch to water pump water supply.
In stopping process, since guide vane closes entirely, top cover water intaking is interrupted, and water supply flow and insufficient pressure, generating unit speed are less than
When 95%Ne, monitoring at this time outputs locking top cover water intaking and switches to water pump water supply order, then will not switch to water pump water supply.Although stopping
Technical water supply flow interrupt during machine, but watt temperature will not be out-of-limit, therefore need not also start water pump.
The turbine-generator units technical water supply control method, by turbine-generator units technical water supply control flow into
Row optimization design keeps way of supplying water safe and reliable.
Better embodiment of the invention is explained in detail above, but the present invention is not limited to above-mentioned embodiment party
Formula within the knowledge of one of ordinary skill in the art can also be without departing from the purpose of the present invention
Various changes can be made.
Claims (3)
1. a kind of turbine-generator units technical water supply control method, including water pump water-supply control and top cover water intaking controlling party
Method, which is characterized in that
The water pump water-supply control, steps are as follows:
S001: when way of supplying water is under water pump way of supplying water, and triple valve then enables the water pump in water supply position or drainage position
Water-supply control；
S002: it receives out technical water supply and enables and output technical water supply switching locking；
After S003: step S002 carries out, whether triple valve is judged in drainage position, it is no if so, carry out step S005
Then, step S004 is carried out；
S004: triple valve is opened to drainage position；
S005: starting main pump；
S006: it if main pump operates normally, carries out step S008 and otherwise then carries out step S007；
S007: fault alarm stops the pump that can not normally start；
S008: when technical water supply general pipeline flow or pressure are lower than setting value, then be delayed 30S judgment technology water main flow again
Or whether pressure still is below setting value, if so, carrying out step S009, otherwise, guarantees operating status；
S009: stopping main pump, and the standby pump of delayed startup carries out step S010 if standby pump operates normally, otherwise, carries out step
S007；
S010: judging whether water main's pressure and flow are normal, if so, carrying out step S012, otherwise, carries out step
S011；
S011: fault alarm, locking pump switching；
S012: judging whether to receive and stop the order of technical water supply machine, if so, otherwise carrying out step S013 remains operational state；
S013: pump of cutting off the water；
S014: terminate；
The top cover water intaking control method, steps are as follows:
S100: when way of supplying water is under top cover water-supply method, and two-way top cover relief valve draining motor-driven valve closes entirely, and triple valve exists
Water supply position or drainage position then enable top cover water intaking control method；
S101: it receives out technical water supply and enables and output technical water supply switching locking；
S102: step S101 carry out after, judge triple valve whether in water supply position, if so, directly progress step S103,
Otherwise, step S102 is carried out；
S102: triple valve is opened to position of supplying water；
S103: monitoring generating unit speed releases technical water supply switching locking when generating unit speed is greater than Ne95%；
S104: when technical water supply general pipeline flow or pressure are lower than setting value, then be delayed 30S judgment technology water main flow again
Or whether pressure still is below setting value, if so, carrying out step S004, otherwise, guarantees operating status；
S105: if a monitoring distant place, which is issued an order, is switched to water pump water supply from top cover water intaking for way of supplying water, carrying out step S004, otherwise,
Guarantee operating status；
S106: when top cover pressure is greater than the set value, delay 5S judges whether top cover pressure is greater than the set value again, if so,
Step S107 is carried out, otherwise, carries out step S114；
S107: opening two-way top cover relief valve and drain motor-driven valve, if two-way top cover relief valve draining motor-driven valve is normally-open, into
Otherwise row step S004 carries out step S108；
S108: judge top cover relief valve draining motor-driven valve whether standard-sized sheet, if so, carry out step S110, otherwise, carry out step
S109:
S109: top cover relief valve drains motor-driven valve fault alarm；
S110: switching three-way valve to drainage position；
S111: it closes top cover relief valve and drains motor-driven valve, and carry out step S114；
S112: it in stopping process, when generating unit speed is less than Ne95%, outputs technical water supply mode and switches locking；
S113: it receives and stops technical water supply and enable and release technical water supply mode to switch locking；
S114: terminate.
2. turbine-generator units technical water supply control method according to claim 1, which is characterized in that step S001 replacement
Are as follows: when way of supplying water is under water pump way of supplying water, and triple valve then enables the water pump water-supply control in drainage position.
3. turbine-generator units technical water supply control method according to claim 1, which is characterized in that step S100 replacement
Are as follows: when way of supplying water is under top cover water-supply method, and two-way top cover relief valve draining motor-driven valve closes entirely, and triple valve is for water level
It sets, then enables top cover water intaking control method.
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|---|---|
| CN106968876A (en) | 2017-07-21 |
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