CN104613460B - Pressure water supply system and start and stop method thereof in gas power station - Google Patents
Pressure water supply system and start and stop method thereof in gas power station Download PDFInfo
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- CN104613460B CN104613460B CN201510052524.XA CN201510052524A CN104613460B CN 104613460 B CN104613460 B CN 104613460B CN 201510052524 A CN201510052524 A CN 201510052524A CN 104613460 B CN104613460 B CN 104613460B
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- 239000006200 vaporizer Substances 0.000 claims abstract description 11
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Abstract
Pressure water supply system and start and stop method thereof in a kind of gas power station, in this gas power station, pressure water supply system includes: middle pressure boiler system and middle pressure feed-water pump, and described middle pressure boiler system connects medium pressure feed-water pump; Described middle pressure boiler system includes: water bypass on water main road, middle pressure drum on middle pressure drum, middle pressure economizer, middle pressure vaporizer, middle pressure superheater, middle pressure drum, pressure reheater in pressure reheater and second in first; Medium pressure feed-water pump includes: pressure feed pump branch road in pressure feed pump branch road and second in parallel first, in in parallel described first, in pressure feed pump branch road and second, one end of pressure feed pump branch road connects low-pressure drum, and the other end is connected to medium pressure economizer. By the invention it is possible in gas power station, pressure water supply system full cut-off or part start, it is achieved the automatic startup of middle pressure water supply system, being automatically stopped of pressure water supply system in realizing under operation, do not disturb original running status.
Description
Technical field
The present invention is about pressing water-supply technology in gas power station, especially with regard to pressure water supply system and start and stop method thereof in a kind of gas power station.
Background technology
In gas power station, the major function of pressure water supply system is that in utilizing, middle pressure drum is delivered in the feedwater of low-pressure drum by pressure feed pump, and in pressure the Water Level Control of Steam at desired value and to adjust valve to throw water level in upper water automatic. But pressure water supply system cannot in gas power station under pressure water supply system full cut-off state in existing gas power station, the automatic startup of pressure water supply system in realization, in cannot realizing under operation, pressure water supply system is automatically stopped, and cannot in gas power station when the startup of pressure water supply system part, the automatic startup of pressure water supply system in realization, and do not disturb original running status.
Summary of the invention
Embodiments provide pressure water supply system and starting method thereof in a kind of gas power station, with under pressure water supply system full cut-off state in gas power station or under the state of part startup, the automatic startup of pressure water supply system in realization, and do not disturb original running status.
To achieve these goals, embodiments provide pressure water supply system in a kind of gas power station, in described gas power station, pressure water supply system includes: middle pressure boiler system and middle pressure feed-water pump, and described middle pressure boiler system connects medium pressure feed-water pump;
Described middle pressure boiler system includes: water bypass on water main road, middle pressure drum on middle pressure drum, middle pressure economizer, middle pressure vaporizer, middle pressure superheater, middle pressure drum, pressure reheater in pressure reheater and second in first;
After on medium pressure drum, water main road and water on middle pressure drum bypass and is connected in parallel, one end is connected to medium pressure drum, and the other end is connected to medium pressure feed pump by the middle pressure economizer on supply line; The entrance of medium pressure vaporizer and outlet are respectively connecting to middle pressure drum; Medium pressure drum is connected to the entrance of middle pressure superheater, and the outlet of medium pressure superheater passes sequentially through presses pressure reheater in reheater and second to be connected to condenser and steam turbine in described first, and is provided with intermediate pressure by-pass tune valve on the pipeline go condenser;
Medium pressure feed-water pump includes: pressure feed pump branch road in pressure feed pump branch road and second in parallel first, in in parallel described first, in pressure feed pump branch road and second, one end of pressure feed pump branch road connects low-pressure drum, and the other end is connected to medium pressure economizer; By from low-pressure drum feedwater on the direction of medium pressure economizer, press in described first and feed pump branch road is sequentially provided with the first pump intake electrodynamic valve, the first pump intake filter screen, pressure feed pump and the first pump discharge electrodynamic valve in first; By from low-pressure drum feedwater on the direction of medium pressure economizer, press in described second and feed pump branch road is sequentially provided with the second pump intake electrodynamic valve, the second pump intake filter screen, pressure feed pump and the second pump discharge electrodynamic valve in second.
In one embodiment, medium pressure drum is provided with on middle pressure drum water main road electrodynamic valve on water main road and on middle pressure drum, water main road adjusts valve; On the bypass electrodynamic valve that is provided with on middle pressure drum water in water bypass on medium pressure drum and middle pressure drum, valve is adjusted in water bypass.
In one embodiment, the supply line between medium pressure economizer and middle pressure feed pump is disposed with emptying electrodynamic valve, the first safety door and first flow orifice plate.
In one embodiment, medium pressure superheater and first is pressed and the pipeline between reheater is disposed with middle pressure superheater outlet electric valve and middle pressure superheater outlet tune valve.
In one embodiment, pipeline between pressure reheater and condenser and steam turbine is disposed with the second safety door, the 3rd safety door and second flow orifice plate in described second.
In one embodiment, medium pressure boiler system also includes: in first, press reheater desuperheating water pipeline, on this pipeline that one end of pressure reheater desuperheating water pipeline is connected in described first to press in reheater and second between pressure reheater in first, the other end is connected on the supply line between medium pressure economizer and emptying electrodynamic valve; This is disposed with in first on pressure reheater desuperheating water pipeline in first and presses pressure reheater desuperheating water in reheater desuperheating water electrodynamic valve, the 3rd flow-through orifice and first to adjust valve.
In one embodiment, medium pressure boiler system also includes: in second, press reheater desuperheating water pipeline, this is connected on the supply line between emptying electrodynamic valve and the first safety door in pressure reheater desuperheating water pipeline one end in second, and the other end is connected in the second safety door and second to press on the pipeline between reheater; This is arranged on pressure reheater desuperheating water pipeline in second presses pressure reheater desuperheating water in reheater desuperheating water electrodynamic valve, the 4th flow-through orifice and second to adjust valve in second.
In one embodiment, medium pressure boiler system is additionally provided with: middle pressure water supply system programed logic operation button, middle pressure feed pump preliminary election button, middle pressure drum allows upper water ACK button and middle pressure drum watering pipeline water filling to complete ACK button.
In one embodiment, medium pressure feed-water pump is additionally provided with: the first pump frequency conversion differential pressure automatic button, the first pump interlocking are thrown standby button, the second pump frequency conversion differential pressure automatic button and the second pump interlocking and thrown standby button.
To achieve these goals, embodiments providing a kind of start and stop method, described start and stop method includes: starting step, this startup step includes:
Judge to comprise the first pump discharge electrodynamic valve, second pump discharge electrodynamic valve, the first hydrophobic electrodynamic valve of pump discharge, the second hydrophobic electrodynamic valve of pump discharge, reheater desuperheating water electrodynamic valve is pressed in first, reheater desuperheating water is pressed to adjust valve in first, reheater desuperheating water electrodynamic valve is pressed in second, reheater desuperheating water is pressed to adjust valve in second, the urgent hydrophobic electrodynamic valve of drum is pressed in first, the urgent hydrophobic electrodynamic valve of drum is pressed in second, the hydrophobic electrodynamic valve of economizer exit is pressed in first, the hydrophobic electrodynamic valve of economizer exit is pressed in second, the hydrophobic electrodynamic valve of evaporator is pressed in first, the hydrophobic electrodynamic valve of evaporator is pressed in second, water main road electrodynamic valve on middle pressure drum, on middle pressure drum, water main road adjusts valve, on middle pressure drum, water bypasses water bypass on electrodynamic valve and middle pressure drum and adjusts whether the valve group of valve closes, whether the first pump recirculation electrodynamic valve and the second pump recirculation electrodynamic valve have been opened and on middle pressure drum, whether water bypass has thrown automatically, if it does not, send all valves in the described valve group of closedown, open the first pump recirculation electrodynamic valve and the second pump recirculation electrodynamic valve and automatic instruction is thrown in water bypass on middle pressure drum,
If it is, judge whether the middle pressure feed pump being currently running;
If there is no the middle pressure feed pump being currently running carries out, it is judged that whether the middle pressure feed pump of preliminary election ran more than for first scheduled time; If the middle pressure feed pump off-duty of preliminary election or operation are not less than first scheduled time, send the instruction of the middle pressure feed pump starting preliminary election;
If the middle pressure feed pump of preliminary election runs more than described first scheduled time, it is judged that whether middle pressure drum pressure is less than or greater than the first predetermined pressure;
If middle pressure drum pressure is less than the first predetermined pressure, it is judged that whether middle pressure drum emptying electrodynamic valve is opened; If middle pressure drum emptying electrodynamic valve is not opened, send the instruction pressing drum emptying electrodynamic valve in unlatching;
If middle pressure drum emptying electrodynamic valve is opened, it is judged that whether middle pressure steam water-level is less than or greater than the first predetermined water level;
If middle pressure steam water-level is less than the first predetermined water level, it is judged that whether middle pressure drum wall temperature is less than the first predetermined temperature, or judges whether to receive the upper water manual confirmation of permission;
If it is, whether pressure drum watering pipeline water filling completes in judging; If middle pressure drum watering pipeline water filling is not fully complete, send the instruction pressing feed pump outlet second scheduled time of Electrically operated gate in open shop;
If middle pressure drum watering pipeline water filling completes, it is judged that whether the middle pressure feed pump outlet Electrically operated gate of operation is opened, if it does not, send the instruction opening the middle pressure feed pump outlet Electrically operated gate run;
If the middle pressure feed pump outlet Electrically operated gate run is opened, it is judged that whether middle pressure feed pump frequency conversion differential pressure puts into automatically, if it does not, send the pressure feed pump automatic instruction of frequency conversion differential pressure in input;
If middle pressure feed pump frequency conversion differential pressure puts into automatically, it is judged that on middle pressure drum, whether water bypass valve is opened to predetermined aperture, and on middle pressure drum, whether water bypass electrodynamic valve is opened, and whether middle pressure feed pump interlocking puts into; If it does not, send, water bypass valve on middle pressure drum is opened to predetermined aperture, and water bypass electrodynamic valve on middle pressure drum is opened, and the instruction put into that middle pressure feed pump is interlocked;
If water bypass valve is opened to predetermined aperture on middle pressure drum, and on middle pressure drum, water bypass electrodynamic valve is opened, and middle pressure feed pump interlocking puts into, it is judged that whether the water level of middle pressure drum is more than described first predetermined water level;
If the water level of middle pressure drum is more than described first predetermined water level, it is judged that whether the upper water regulating valve water level of middle pressure drum bypass has put into and whether the 3rd scheduled time automatically; The automatic instruction of water regulating valve water level on pressure drum was made a basket if it does not, send;
If the upper water regulating valve water level of middle pressure drum bypass has put into and time delay the 3rd scheduled time automatically, it is judged that whether whether combustion engine have fire and middle pressure drum pressure more than described first predetermined pressure;
If combustion engine has fire and middle pressure drum pressure more than described first predetermined pressure, judgement is pressed steam water-level whether between predetermined water level interval and middle pressure drum emptying electrodynamic valve whether close, if not, send and made a basket the pressure upper water regulating valve water level of drum bypass automatically, and the instruction of Central Shanxi Plain pressure drum emptying electrodynamic valve.
In one embodiment, described start and stop method also includes:
Judge whether combustion engine puts out a fire and on middle pressure drum, water bypass adjusts whether valve closes;
If water bypass adjusts valve to close in combustion engine fire extinguishing and middle pressure drum, it is judged that whether middle pressure feed pump interlocking has dropped out, if middle pressure feed pump interlocking does not have dropped out, send the instruction exiting middle pressure feed pump interlocking;
If whether middle pressure feed pump interlocking has dropped out, judgement is pressed drum feedwater main road regulate valve and middle pressure drum feed water by-pass regulates whether valve is all switched to manually and closes, and two are pressed whether feed pump all stops, stop two being pressed feed pump, middle pressure drum feedwater main road adjustment valve and middle pressure drum feed water by-pass being regulated, whether valve is all switched to manually and the instruction closed if it does not, send;
If middle pressure drum feedwater main road regulates valve and middle pressure drum feed water by-pass regulates valve and is all switched to manually and closes, and presses feed pump all to stop in two, it is judged that press whether feed pump outlet electric valve is turned off in two; If it does not, send the instruction of pressure feed pump outlet electric valve in closedown two;
If two being pressed feed pump outlet electric valve be turned off, it is judged that on middle pressure drum, on water main road electrodynamic valve and middle pressure drum, whether water bypass electrodynamic valve closes and whether middle pressure reheater desuperheating water electrodynamic valve is switched to manually and closes; If it does not, send, closedown is pressed on drum water bypass electrodynamic valve on water main road electrodynamic valve and middle pressure drum, and the instruction middle pressure reheater desuperheating water electrodynamic valve being switched to manually and closing.
In one embodiment, the condition that the operation of described startup step performs is: low-pressure drum water level is more than-1250mm.
In one embodiment, if there is the middle pressure feed pump being currently running, it is judged that whether middle pressure drum pressure is less than or greater than the first predetermined pressure.
In one embodiment, if middle pressure drum pressure is more than the first predetermined pressure, it is judged that whether middle pressure steam water-level is less than or greater than the first predetermined water level.
In one embodiment, if middle pressure steam water-level is more than the first predetermined water level, it is judged that whether middle pressure drum watering pipeline water filling completes.
Having the beneficial effects that of the embodiment of the present invention, pass through the present invention, can in gas power station under pressure water supply system full cut-off state, the automatic startup of pressure water supply system in realization, in realizing under operation, pressure water supply system is automatically stopped, and pressure water supply system part starts in gas power station, it is achieved the automatic startup of middle pressure water supply system, and do not disturb original running status.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of the middle pressure boiler system of the embodiment of the present invention;
Fig. 2 is the structural representation of the middle pressure feed-water pump of the embodiment of the present invention;
Fig. 3 be the embodiment of the present invention gas power station in the startup flow chart of steps of pressure water supply system start and stop method;
Fig. 4 be the embodiment of the present invention gas power station in the stopping flow chart of steps of pressure water supply system start and stop method.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments. Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
The embodiment of the present invention provides pressure water supply system in a kind of gas power station, and in described gas power station, pressure water supply system includes: middle pressure boiler system and middle pressure feed-water pump, and described middle pressure boiler system connects medium pressure feed-water pump.
As it is shown in figure 1, described middle pressure boiler system includes: the parts such as water bypass, middle pressure reheater 5 and middle pressure reheater 6 on water main road, middle pressure drum on middle pressure drum 100, middle pressure economizer 2, middle pressure vaporizer 3, middle pressure superheater 4, middle pressure drum.
After on middle pressure drum, water main road and water on middle pressure drum bypass and is connected in parallel, one end is connected to middle pressure drum 100, and the other end is connected to middle pressure feed pump by the middle pressure economizer 2 on supply line 30. The entrance (pressing the filter screen 48 on drum 100 in connection) of middle pressure vaporizer 3 and outlet are respectively connecting to middle pressure drum 100. Middle pressure drum 100 is connected to the entrance of middle pressure superheater 4, the outlet of middle pressure superheater 4 passes sequentially through middle pressure reheater 5 and middle pressure reheater 6 is connected to condenser and steam turbine (middle pressure main steam), and is provided with intermediate pressure by-pass tune valve 27 on the pipeline go condenser. The entrance of middle pressure superheater 4 and middle pressure drum 100 are connected in one to press drum bursting diaphragm 22.
Middle pressure drum is provided with on middle pressure drum water main road electrodynamic valve 14 on water main road and on middle pressure drum, water main road adjusts valve 15. On the bypass electrodynamic valve 16 that is provided with on middle pressure drum water in water bypass on middle pressure drum and middle pressure drum, valve 17 is adjusted in water bypass. Middle pressure economizer 2 and middle pressure drum are connected to middle pressure economizer hydrophobic pipeline 31 on supply line 30 between water bypass on water main road and middle pressure drum, this are pressed economizer hydrophobic pipeline 31 is connected to the middle hydrophobic electrodynamic valve of pressure economizer exit 18 and the hydrophobic electrodynamic valve 19 of middle pressure economizer exit. Supply line 30 between middle pressure economizer 2 and middle pressure feed pump is disposed with emptying electrodynamic valve 1, safety door 32 and flow-through orifice 33. Being connected to middle pressure vaporizer hydrophobic pipeline 34 on pipeline between entrance and the middle pressure drum 100 of middle pressure vaporizer 3, middle pressure vaporizer hydrophobic pipeline 34 is provided with the middle hydrophobic electrodynamic valve of pressure evaporator 25 and the hydrophobic electrodynamic valve 26 of middle pressure evaporator.
Pipeline between middle pressure superheater 4 and middle pressure reheater 5 is disposed with middle pressure superheater outlet electric valve 7 and middle pressure superheater outlet adjusts valve 8. Middle pressure superheater outlet is adjusted and is connected to cold steam again on the pipeline 35 between valve 8 and middle pressure reheater 5 to reheater electrodynamic valve 13.
Pipeline is disposed with between middle pressure reheater 6 and condenser and steam turbine safety door 36, safety door 37 and flow-through orifice 38, pipeline between safety door 37 and flow-through orifice 38 is provided with middle pressure main steam emptying pipeline 39, this is pressed main steam emptying pipeline 39 is provided with middle pressure main steam emptying electrodynamic valve 23 and middle pressure main steam emptying electrodynamic valve 24.
The middle pressure boiler system of the present invention also includes pressure reheater desuperheating water pipeline 40 in, this is pressed one end of reheater desuperheating water pipeline 40 be connected on the pipeline between middle pressure reheater 5 and middle pressure reheater 6, this is pressed the other end of reheater desuperheating water pipeline 40 be connected on the supply line 30 between middle pressure economizer 2 and emptying electrodynamic valve 1. Pressing in this and be provided with middle pressure reheater desuperheating water electrodynamic valve 9 and middle pressure reheater desuperheating water tune valve on reheater desuperheating water pipeline 40, middle pressure reheater desuperheating water electrodynamic valve 9 and middle pressure reheater desuperheating water adjust pressure economizer 10 in valve to be provided with flow-through orifice 41.
The middle pressure boiler system of the present invention also includes pressure reheater desuperheating water pipeline 42 in another, this is pressed reheater desuperheating water pipeline 42 one end be connected on the supply line 30 between emptying electrodynamic valve 1 and safety door 32, this is pressed reheater desuperheating water pipeline 42 other end be connected on the pipeline between safety door 36 and middle pressure reheater 6. Pressing in this and arrange middle pressure reheater desuperheating water electrodynamic valve 11 and middle pressure reheater desuperheating water tune valve 12 on reheater desuperheating water pipeline 42, middle pressure reheater desuperheating water electrodynamic valve 11 and middle pressure reheater desuperheating water are adjusted and are additionally provided with a flow-through orifice 43 between valve 12.
Additionally, this is pressed drum 100 be also associated with safety door 44, safety door 45 and safety door 46, this is pressed drum 100 be also connected with an emergency blowoff pipeline 47, this emergency blowoff pipeline 47 is provided with the urgent hydrophobic electrodynamic valve 20 of middle pressure drum and the urgent hydrophobic electrodynamic valve 21 of middle pressure drum.
As it is shown in figure 1, middle pressure water supply system programed logic operation button a1, middle pressure feed pump preliminary election button a2, middle pressure drum allows upper water ACK button a3 and middle pressure drum watering pipeline water filling to complete ACK button a4.
As in figure 2 it is shown, medium pressure feed-water pump includes: pressure feed pump branch road 213 and pressure feed pump branch road 214 in #2 in #1 in parallel, pipeline one end of this parallel connection connects low-pressure drum, and the other end is connected to middle pressure economizer 2. On from low-pressure drum feedwater to the direction of middle pressure economizer 2, #1 presses and feed pump branch road 213 is sequentially provided with in #1 pump intake electrodynamic valve 201, inlet screen 3, #1 and presses feed pump 205, #1 pump discharge electrodynamic valve 209. On from low-pressure drum feedwater to middle pressure economizer direction, #2 presses and feed pump branch road 214 is sequentially provided with in #2 pump intake electrodynamic valve 202, inlet screen 204, #2 and presses feed pump 206, #2 pump discharge electrodynamic valve 210.
Additionally, #1 press feed pump 205, with the #1 of #1 pump discharge electrodynamic valve 209, pressure feed pump branch road 213 is connected to low-pressure drum water return pipeline 215 and hydraulic pipeline 216, this low-pressure drum water return pipeline 215 is provided with #1 pump recirculation electrodynamic valve 207, and this hydraulic pipeline 216 is provided with the hydrophobic electrodynamic valve 211 of #1 pump discharge; #2 press feed pump 206, with the #2 of #2 pump discharge electrodynamic valve 210, pressure feed pump branch road 214 is connected to low-pressure drum water return pipeline 217 and hydraulic pipeline 218, this low-pressure drum water return pipeline 217 is provided with #2 pump recirculation electrodynamic valve 208, and this hydraulic pipeline 218 is provided with the hydrophobic electrodynamic valve 212 of #1 pump discharge.
Middle pressure feed-water pump also sets up four buttons, respectively: #1 pump frequency conversion differential pressure (button) automatically, #1 pump interlocking throw standby (button), #2 pump frequency conversion differential pressure (button) automatically and #2 pump interlocking throws standby (button). 3) by clicking #1 pump frequency conversion differential pressure (button) automatically and #2 pump frequency conversion differential pressure automatic (button), it is possible to select preliminary election 1 is pressed pressure feed pump in feed pump and preliminary election 2 respectively.
Middle pressure boiler system shown in Fig. 1 and in Fig. 2 medium pressure feed-water pump, the effect of middle pressure drum 100 is to receive the feedwater from low-pressure drum, and as storing container, heated superheated steam is supplied to Steam Turbine Through IP Admission acting. Middle pressure feed pump (presses pressure feed pump 206 in feed pump 205 and #2) function in #1 is to suck the feedwater of low-pressure drum and provide pressure head, is delivered to middle pressure drum 100, it is ensured that the normal upper water of middle pressure drum; In additionally, pressure feed pump exports provides part feedwater to middle pressure reheater (middle pressure reheater 5 and middle pressure reheater 6) to do desuperheating water use. Electrodynamic valve after having water on two-way to adjust valve and adjust valve on middle pressure feedwater piping (on middle pressure drum water bypass on water main road and middle pressure drum), main road upper hose footpath is bigger, bypass upper hose footpath is less, use on pressure drum water bypass to adjust valve to be more suitable for control flow, in therefore on pressure drum water bypass adjust valve be used in programmed logic on water and throw water level and automatically control. During low-pressure drum feedwater is sucked and provide certain pressure head to pass through by middle pressure feed pump, pressure economizer 2 is heated, adjusted valve and electrodynamic valve to control feedwater flow by water bypass on middle pressure drum and deliver to middle pressure drum, feedwater in middle pressure drum is constantly heated to middle pressure steam by middle pressure vaporizer and returns middle pressure drum 100, and presses superheater to be heated to superheated steam in the steam process in middle pressure drum 100 and be supplied to Steam Turbine Through IP Admission acting.
As it is shown on figure 3, the embodiment of the present invention provides a kind of start and stop method, being applied to pressure water supply system in the gas power station shown in Fig. 1 and Fig. 2, this start and stop method includes starting step, and this startup step includes:
Whether S301: judge whether some doors close, press the recirculation electrodynamic valve (#1 pump recirculation electrodynamic valve 7 and #2 pump recirculation electrodynamic valve 8) of feed pump to open in two and on middle pressure drum, whether water bypass has thrown automatically;
Judge some doors whether closed can by whether receive some pass feedback judge, some doors include: #1 pump discharge electrodynamic valve 209, #2 pump discharge electrodynamic valve 210, the hydrophobic electrodynamic valve 211 of #1 pump discharge, the hydrophobic electrodynamic valve 212 of #2 pump discharge, middle pressure reheater desuperheating water electrodynamic valve 9, middle pressure reheater desuperheating water adjusts valve 10, middle pressure reheater desuperheating water electrodynamic valve 11, middle pressure reheater desuperheating water adjusts valve 12, the urgent hydrophobic electrodynamic valve 20 of middle pressure drum, the urgent hydrophobic electrodynamic valve 21 of middle pressure drum, the hydrophobic electrodynamic valve 18 of middle pressure economizer exit, the hydrophobic electrodynamic valve 19 of middle pressure economizer exit, the hydrophobic electrodynamic valve 25 of middle pressure evaporator, the hydrophobic electrodynamic valve 26 of middle pressure evaporator, water main road electrodynamic valve 14 on middle pressure drum, on middle pressure drum, water main road adjusts valve 15, on middle pressure drum, water bypasses water bypass on electrodynamic valve 16 and middle pressure drum and adjusts valve 17.
If some doors close, two are pressed the recirculation electrodynamic valve of feed pump opened and on middle pressure drum, water bypass has been thrown automatically, carry out S303, otherwise, carry out S302, send out the recirculation electrodynamic valve pressing feed pump in two, water bypass on middle pressure drum is thrown automatically, and close #1 pump discharge electrodynamic valve 209, #2 pump discharge electrodynamic valve 210, the hydrophobic electrodynamic valve 211 of #1 pump discharge, the hydrophobic electrodynamic valve 212 of #2 pump discharge, middle pressure reheater desuperheating water electrodynamic valve 9, middle pressure reheater desuperheating water adjusts valve 10, middle pressure reheater desuperheating water electrodynamic valve 11, middle pressure reheater desuperheating water adjusts valve 12, the urgent hydrophobic electrodynamic valve 20 of middle pressure drum, the urgent hydrophobic electrodynamic valve 21 of middle pressure drum, the hydrophobic electrodynamic valve 18 of middle pressure economizer exit, the hydrophobic electrodynamic valve 19 of middle pressure economizer exit, the hydrophobic electrodynamic valve 25 of middle pressure evaporator, the hydrophobic electrodynamic valve 26 of middle pressure evaporator, water main road electrodynamic valve 14 on middle pressure drum, on middle pressure drum, water main road adjusts valve 15, on middle pressure drum, water bypasses water bypass on electrodynamic valve 16 and middle pressure drum and adjusts the instruction of valve 17.
S303: judge whether the middle pressure feed pump being currently running, the middle pressure feed pump being if there is no currently running carries out S304; Otherwise, S306 is carried out. This step is determine whether that middle pressure feed pump runs, if without pump operation, continuing next step, if there being pump operation, skipping to S306. This avoid the original running status of pressure water supply system in interference, it also avoid the work of the repeated priming of middle pressure feed pump.
S304: judge whether the middle pressure feed pump of preliminary election has run more than first scheduled time (such as 30 seconds), in this step, it is possible to press feed pump in feed pump and preliminary election 2 by selecting to press in preliminary election 1. If the middle pressure feed pump off-duty of preliminary election or operation are not less than first scheduled time, carry out S305, send the instruction of the middle pressure feed pump starting preliminary election. If the middle pressure feed pump of preliminary election runs more than 30 seconds, carry out S306.
S306: press drum pressure less than or greater than the first predetermined pressure (such as 0.1MPa) in judgement, if middle pressure drum pressure is less than the first predetermined pressure, carry out S307; If middle pressure drum pressure is more than the first predetermined pressure, carry out S309. This step considers middle pressure drum already at hot situation, therefore this step avoids the original running status of pressure water supply system in interference, it also avoid the work of the repeated priming of middle pressure water supply system.
S307: press in judgement whether drum emptying electrodynamic valve is opened, if it does not, carry out S308, sends the instruction pressing drum emptying electrodynamic valve in unlatching.
S309: press steam water-level less than or greater than the first predetermined water level (such as-200mm) in judgement, if middle pressure steam water-level is less than the first predetermined water level, carry out S310; If middle pressure steam water-level is more than the first predetermined water level, carry out S313. This step considers middle pressure steam water-level and has reached the situation of desired value, therefore this step avoids the original running status of pressure water supply system in interference, it also avoid the upper water conservancy project that repeats of middle pressure water supply system and makees.
S310: press drum wall temperature whether less than the first predetermined temperature (being such as 120 degree) in judgement, or whether receive the upper water manual confirmation of permission, if middle pressure drum wall temperature is less than the first predetermined temperature, or receive the upper water manual confirmation of permission, carry out S311. If more than 120 DEG C, power plant operations staff can according in press the temperature difference of coolant-temperature gage on the wall temperature of drum and middle pressure drum, judging whether can to water on middle pressure drum.
S311: press in judgement whether drum watering pipeline (supply line 30) water filling completes (to complete ACK button by click water filling and judge whether water filling completes, when operations staff observes that middle pressure drum supply line bursting diaphragm aerofluxus terminates and during continuously water breakthrough, pipeline water filling can be clicked and complete ACK button, continue next step); If middle pressure drum watering pipeline water filling is not fully complete, carry out S312, send the instruction pressing feed pump outlet second scheduled time of Electrically operated gate (such as 15S) in open shop; Otherwise, S313 is carried out.
S313: judge whether the middle pressure feed pump run outlet Electrically operated gate is opened, if it does not, carry out S314, sends the instruction opening the middle pressure feed pump outlet Electrically operated gate run; If the middle pressure feed pump outlet Electrically operated gate run is opened, carry out S315.
S315: press whether feed pump frequency conversion differential pressure puts into automatically in judgement, if it does not, carry out S316, sends the pressure feed pump automatic instruction of frequency conversion differential pressure in input, and in one embodiment, setting value is 1.0MPa. If middle pressure feed pump frequency conversion differential pressure puts into automatically, carry out S317.
S317: press in judgement whether water bypass valve on drum is opened to predetermined aperture (such as 10%), and on middle pressure drum, whether water bypass electrodynamic valve is opened, and whether middle pressure feed pump interlocking puts into. After middle pressure feed pump interlocking puts into, when central pressure feed pump outlet main-piping pressure is lower than certain definite value; Or when having arbitrary middle pressure Feed Pump Trip, all can interlocked startup pressure feed pump in another, thus pressure feed pump outlet main-piping pressure is normal in ensureing.
If water bypass valve is opened to predetermined aperture on middle pressure drum, and on middle pressure drum, water bypass electrodynamic valve is opened, and middle pressure feed pump interlocking puts into, carries out S319; Otherwise, carry out S318, send and water bypass valve on middle pressure drum is opened to predetermined aperture, and water bypass electrodynamic valve on middle pressure drum is opened, and the instruction put into that middle pressure feed pump is interlocked.
S319: press the water level of drum whether more than described first predetermined water level (-200mm) in judgement, if it is, carry out S320.
S320: press the drum upper water regulating valve water level of bypass automatically whether to put in judgement and whether time delay 1 minute, if the upper water regulating valve water level of middle pressure drum bypass has put into automatically and time delay 1 minute, carries out S322; Otherwise, carry out S321, send and made a basket the automatic instruction of water regulating valve water level on pressure drum.
In this gas power station, the start and stop method (programme-control startup logic) of pressure water supply system can meet automatically controlling of water pressure and steam water-level on centering pressure drum, therefore also just meets under different load operating mode automatically controlling of water on centering pressure drum. Upper water pressure automatically control be by made a basket pressure feed pump frequency conversion differential pressure automatically realize, be embodied in S315; Steam water-level automatically control be by made a basket pressure drum on water adjust valve water lev el control realize, be embodied in S320.
S322: judge whether whether combustion engine have fire and middle pressure drum pressure more than described first predetermined pressure (0.1MPa), if combustion engine has fire and middle pressure drum pressure more than described first predetermined pressure, carries out S323.
S323: judgement is pressed steam water-level whether between predetermined water level interval (such as-50mm to 50mm) and middle pressure drum emptying electrodynamic valve whether close; If middle pressure steam water-level is not between predetermined water level interval, or middle pressure drum emptying electrodynamic valve does not close, carry out S324, send and made a basket the pressure upper water regulating valve water level of drum bypass automatically (such as setting value 0mm), and the instruction of Central Shanxi Plain pressure drum emptying electrodynamic valve.
In one embodiment, the condition that the operation of described startup step performs is: low-pressure drum water level is more than-1250mm.
By the flow process shown in Fig. 3, it is achieved that the pressure water supply system automatic startup under system full cut-off state in this gas power station.
In one embodiment, in the gas power station of the embodiment of the present invention, pressure water supply system start and stop method also includes stopping step, and as shown in Figure 4, described stopping step including:
S401: judge whether combustion engine puts out a fire and on middle pressure drum, water bypass adjusts whether valve closes, if combustion engine is put out a fire and on middle pressure drum, water bypass adjusts valve to close, carry out S402.
S402: press in judgement whether feed pump interlocking has dropped out, if it is, carry out S404; Otherwise, carry out S403 and send the instruction exiting middle pressure feed pump interlocking.
S404: press drum feedwater main road to regulate valve in judgement and middle pressure drum feed water by-pass regulates whether valve is all switched to manually and closes, and press whether feed pump all stops in two, if it is, carry out S406; Otherwise, carry out S405, send and stop two being pressed feed pump, middle pressure drum feedwater main road adjustment valve and middle pressure drum feed water by-pass being regulated, whether valve is all switched to manually and the instruction closed.
S406: judge to press whether feed pump outlet electric valve is turned off in two; If two being pressed feed pump outlet electric valve be turned off, carry out S408; Otherwise carry out S407, send the instruction of pressure feed pump outlet electric valve in closing two.
S408: press on drum water bypass electrodynamic valve on water main road electrodynamic valve and middle pressure drum whether to close in judgement and whether middle pressure reheater desuperheating water electrodynamic valve is switched to manually and closes, if not, carry out S409, send and closedown is pressed on drum water bypass electrodynamic valve on water main road electrodynamic valve and middle pressure drum, and the instruction middle pressure reheater desuperheating water electrodynamic valve being switched to manually and closing.
By the flow process shown in Fig. 4, it is achieved that pressure water supply system being automatically stopped under operation in gas power station.
The start and stop method of the present invention is divided into startup step and stops step two parts, middle pressure boiler system comprises 4 manual operation buttons: middle pressure water supply system programed logic operation button a1, middle pressure feed pump preliminary election button a2, middle pressure drum allows upper water ACK button a3 and middle pressure drum watering pipeline water filling to complete ACK button a4. The start and stop method of the present invention, it is achieved that following function:
The first, achieve pressure water supply system automatization's startup under full cut-off state and the automatization under running status in gas power station to stop;
The second, achieve pressure water supply system automatization under part starting state in gas power station start and do not disturb original running status;
3rd, artificial judgement is taken into account, the leapfrog that can realize pressure water supply system journey start and stop method in gas power station runs, when the condition of a certain step of start and stop method is unrealized cause that other step cannot be carried out time, whether Rule of judgment that can be artificial can ignore and operate leapfrog action, continues the operation of start and stop method until complete.
In the present invention, determination methods in Fig. 3 and Fig. 4 needs to carry out (if judging whether valve is opened by judging whether to receive the feedback of valve opening) based on the feedback received, when in gas power station, the start and stop method (programed logic) of pressure water supply system proceeds to a certain step, when not receiving due feedback signal, programed logic can rest on this step, waits manual operation. Power plant operations staff can find the currently running unreceived feedback signal of step sequence, artificially judges whether unreceived feedback signal affects continuing executing with of programed logic. If this feedback signal does not affect present procedure controls proceeding of logic, operations staff can operate leapfrog action and continue the execution of programed logic; If this feedback signal affects present procedure controls proceeding of logic, then operations staff according to each found unsatisfied feedback signal, can go investigation problem targetedly, until after receiving this feedback signal, continuing executing with programed logic.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or computer program. Therefore, the present invention can adopt the form of complete hardware embodiment, complete software implementation or the embodiment in conjunction with software and hardware aspect. And, the present invention can adopt the form at one or more upper computer programs implemented of computer-usable storage medium (including but not limited to disk memory, CD-ROM, optical memory etc.) wherein including computer usable program code.
The present invention is that flow chart and/or block diagram with reference to method according to embodiments of the present invention, equipment (system) and computer program describe. It should be understood that can by the combination of the flow process in each flow process in computer program instructions flowchart and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame. These computer program instructions can be provided to produce a machine to the processor of general purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device so that the instruction performed by the processor of computer or other programmable data processing device is produced for realizing the device of function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions may be alternatively stored in and can guide in the computer-readable memory that computer or other programmable data processing device work in a specific way, the instruction making to be stored in this computer-readable memory produces to include the manufacture of command device, and this command device realizes the function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices provides for realizing the step of function specified in one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple square frame.
Applying specific embodiment in the present invention principles of the invention and embodiment are set forth, the explanation of above example is only intended to help to understand method and the core concept thereof of the present invention; Simultaneously for one of ordinary skill in the art, according to the thought of the present invention, all will change in specific embodiments and applications, in sum, this specification content should not be construed as limitation of the present invention.
Claims (13)
1. pressure water supply system in a gas power station, it is characterised in that in described gas power station, pressure water supply system includes: middle pressure boiler system and middle pressure feed-water pump, described middle pressure boiler system connects medium pressure feed-water pump;
Described middle pressure boiler system includes: water bypass on water main road, middle pressure drum on middle pressure drum, middle pressure economizer, middle pressure vaporizer, middle pressure superheater, middle pressure drum, pressure reheater in pressure reheater and second in first;
After on medium pressure drum, water main road and water on middle pressure drum bypass and is connected in parallel, one end is connected to medium pressure drum, and the other end is connected to medium pressure feed pump by the middle pressure economizer on supply line; The entrance of medium pressure vaporizer and outlet are respectively connecting to middle pressure drum; Medium pressure drum is connected to the entrance of middle pressure superheater, and the outlet of medium pressure superheater passes sequentially through presses pressure reheater in reheater and second to be connected to condenser and steam turbine in described first, and is provided with intermediate pressure by-pass tune valve on the pipeline go condenser;
Medium pressure feed-water pump includes: pressure feed pump branch road in pressure feed pump branch road and second in parallel first, press after feed pump branch circuit parallel connection pressed by feed pump branch road and second in described first, one end connects low-pressure drum, and the other end is connected to medium pressure economizer; By from low-pressure drum feedwater on the direction of medium pressure economizer, press in described first and feed pump branch road is sequentially provided with the first pump intake electrodynamic valve, the first pump intake filter screen, pressure feed pump and the first pump discharge electrodynamic valve in first; By from low-pressure drum feedwater on the direction of medium pressure economizer, press in described second and feed pump branch road is sequentially provided with the second pump intake electrodynamic valve, the second pump intake filter screen, pressure feed pump and the second pump discharge electrodynamic valve in second;
Medium pressure drum is provided with on middle pressure drum water main road electrodynamic valve on water main road and on middle pressure drum, water main road adjusts valve; On the bypass electrodynamic valve that is provided with on middle pressure drum water in water bypass on medium pressure drum and middle pressure drum, valve is adjusted in water bypass;
Supply line between medium pressure economizer and middle pressure feed pump is disposed with emptying electrodynamic valve, the first safety door and first flow orifice plate.
2. pressure water supply system in gas power station according to claim 1, it is characterised in that press in medium pressure superheater and first and be disposed with middle pressure superheater outlet electric valve and middle pressure superheater outlet tune valve on the pipeline between reheater.
3. pressure water supply system in gas power station according to claim 1, it is characterised in that press in described second and be disposed with the second safety door, the 3rd safety door and second flow orifice plate on the pipeline between reheater and condenser and steam turbine.
4. pressure water supply system in gas power station according to claim 1, it is characterized in that, medium pressure boiler system also includes: in first, press reheater desuperheating water pipeline, on this pipeline that one end of pressure reheater desuperheating water pipeline is connected in described first to press in reheater and second between pressure reheater in first, the other end is connected on the supply line between medium pressure economizer and emptying electrodynamic valve; This is disposed with in first on pressure reheater desuperheating water pipeline in first and presses pressure reheater desuperheating water in reheater desuperheating water electrodynamic valve, the 3rd flow-through orifice and first to adjust valve.
5. pressure water supply system in gas power station according to claim 1, it is characterized in that, medium pressure boiler system also includes: in second, press reheater desuperheating water pipeline, this is connected on the supply line between emptying electrodynamic valve and the first safety door in pressure reheater desuperheating water pipeline one end in second, and the other end is connected in the second safety door and second to press on the pipeline between reheater; This is arranged on pressure reheater desuperheating water pipeline in second presses pressure reheater desuperheating water in reheater desuperheating water electrodynamic valve, the 4th flow-through orifice and second to adjust valve in second.
6. pressure water supply system in gas power station according to claim 1, it is characterized in that, medium pressure boiler system is additionally provided with: middle pressure water supply system programed logic operation button, middle pressure feed pump preliminary election button, middle pressure drum allows upper water ACK button and middle pressure drum watering pipeline water filling to complete ACK button.
7. pressure water supply system in gas power station according to claim 1, it is characterized in that, medium pressure feed-water pump is additionally provided with: the first pump frequency conversion differential pressure automatic button, the first pump interlocking are thrown standby button, the second pump frequency conversion differential pressure automatic button and the second pump interlocking and thrown standby button.
8. a start and stop method, is applied to pressure water supply system in the gas power station according to any one of claim 1-7, it is characterised in that described start and stop method includes: starting step, this startup step includes:
Judge to comprise the first pump discharge electrodynamic valve, second pump discharge electrodynamic valve, the first hydrophobic electrodynamic valve of pump discharge, the second hydrophobic electrodynamic valve of pump discharge, reheater desuperheating water electrodynamic valve is pressed in first, reheater desuperheating water is pressed to adjust valve in first, reheater desuperheating water electrodynamic valve is pressed in second, reheater desuperheating water is pressed to adjust valve in second, the urgent hydrophobic electrodynamic valve of drum is pressed in first, the urgent hydrophobic electrodynamic valve of drum is pressed in second, the hydrophobic electrodynamic valve of economizer exit is pressed in first, the hydrophobic electrodynamic valve of economizer exit is pressed in second, the hydrophobic electrodynamic valve of evaporator is pressed in first, the hydrophobic electrodynamic valve of evaporator is pressed in second, water main road electrodynamic valve on middle pressure drum, on middle pressure drum, water main road adjusts valve, on middle pressure drum, water bypasses water bypass on electrodynamic valve and middle pressure drum and adjusts whether the valve group of valve closes, whether the first pump recirculation electrodynamic valve and the second pump recirculation electrodynamic valve have been opened and on middle pressure drum, whether water bypass has thrown automatically, if it does not, send all valves in the described valve group of closedown, open the first pump recirculation electrodynamic valve and the second pump recirculation electrodynamic valve and automatic instruction is thrown in water bypass on middle pressure drum,
If it is, judge whether the middle pressure feed pump being currently running;
If there is the middle pressure feed pump being currently running to carry out, it is judged that whether the middle pressure feed pump of preliminary election ran more than for first scheduled time; If the middle pressure feed pump off-duty of preliminary election, send the instruction of the middle pressure feed pump starting preliminary election;
If the middle pressure feed pump of preliminary election runs more than described first scheduled time, it is judged that whether middle pressure drum pressure is less than or greater than the first predetermined pressure;
If middle pressure drum pressure is less than the first predetermined pressure, it is judged that whether middle pressure drum emptying electrodynamic valve is opened; If middle pressure drum emptying electrodynamic valve is not opened, send the instruction pressing drum emptying electrodynamic valve in unlatching;
If middle pressure drum emptying electrodynamic valve is opened, it is judged that whether middle pressure steam water-level is less than or greater than the first predetermined water level;
If middle pressure steam water-level is less than the first predetermined water level, it is judged that whether middle pressure drum wall temperature is less than the first predetermined temperature, or judges whether to receive the upper water manual confirmation of permission;
If it is, whether pressure drum watering pipeline water filling completes in judging; If middle pressure drum watering pipeline water filling is not fully complete, send the instruction pressing feed pump outlet second scheduled time of Electrically operated gate in open shop;
If middle pressure drum watering pipeline water filling completes, it is judged that whether the middle pressure feed pump outlet Electrically operated gate of operation is opened, if it does not, send the instruction opening the middle pressure feed pump outlet Electrically operated gate run;
If the middle pressure feed pump outlet Electrically operated gate run is opened, it is judged that whether middle pressure feed pump frequency conversion differential pressure puts into automatically, if it does not, send the pressure feed pump automatic instruction of frequency conversion differential pressure in input;
If middle pressure feed pump frequency conversion differential pressure puts into automatically, it is judged that on middle pressure drum, whether water bypass valve is opened to predetermined aperture, and on middle pressure drum, whether water bypass electrodynamic valve is opened, and whether middle pressure feed pump interlocking puts into; If it does not, send, water bypass valve on middle pressure drum is opened to predetermined aperture, and water bypass electrodynamic valve on middle pressure drum is opened, and the instruction put into that middle pressure feed pump is interlocked;
If water bypass valve is opened to predetermined aperture on middle pressure drum, and on middle pressure drum, water bypass electrodynamic valve is opened, and middle pressure feed pump interlocking puts into, it is judged that whether the water level of middle pressure drum is more than described first predetermined water level;
If the water level of middle pressure drum is more than described first predetermined water level, it is judged that whether the upper water regulating valve water level of middle pressure drum bypass has put into and whether the 3rd scheduled time automatically; The automatic instruction of water regulating valve water level on pressure drum was made a basket if it does not, send;
If the upper water regulating valve water level of middle pressure drum bypass has put into and time delay the 3rd scheduled time automatically, it is judged that whether whether combustion engine have fire and middle pressure drum pressure more than described first predetermined pressure;
If combustion engine has fire and middle pressure drum pressure more than described first predetermined pressure, judgement is pressed steam water-level whether between predetermined water level interval and middle pressure drum emptying electrodynamic valve whether close, if not, send and made a basket the pressure upper water regulating valve water level of drum bypass automatically, and the instruction of Central Shanxi Plain pressure drum emptying electrodynamic valve.
9. start and stop method according to claim 8, it is characterised in that described start and stop method also includes:
Judge whether combustion engine puts out a fire and on middle pressure drum, water bypass adjusts whether valve closes;
If water bypass adjusts valve to close in combustion engine fire extinguishing and middle pressure drum, it is judged that whether middle pressure feed pump interlocking has dropped out, if middle pressure feed pump interlocking does not have dropped out, send the instruction exiting middle pressure feed pump interlocking;
If whether middle pressure feed pump interlocking has dropped out, judgement is pressed drum feedwater main road regulate valve and middle pressure drum feed water by-pass regulates whether valve is all switched to manually and closes, and two are pressed whether feed pump all stops, stop two being pressed feed pump, middle pressure drum feedwater main road adjustment valve and middle pressure drum feed water by-pass being regulated, whether valve is all switched to manually and the instruction closed if it does not, send;
If middle pressure drum feedwater main road regulates valve and middle pressure drum feed water by-pass regulates valve and is all switched to manually and closes, and presses feed pump all to stop in two, it is judged that press whether feed pump outlet electric valve is turned off in two; If it does not, send the instruction of pressure feed pump outlet electric valve in closedown two;
If two being pressed feed pump outlet electric valve be turned off, it is judged that on middle pressure drum, on water main road electrodynamic valve and middle pressure drum, whether water bypass electrodynamic valve closes and whether middle pressure reheater desuperheating water electrodynamic valve is switched to manually and closes; If it does not, send, closedown is pressed on drum water bypass electrodynamic valve on water main road electrodynamic valve and middle pressure drum, and the instruction middle pressure reheater desuperheating water electrodynamic valve being switched to manually and closing.
10. start and stop method according to claim 8, it is characterised in that described startup step is run the condition performed and is: low-pressure drum water level is more than-1250mm.
11. start and stop method according to claim 8, it is characterised in that if there is the middle pressure feed pump being currently running, it is judged that whether middle pressure drum pressure is less than or greater than the first predetermined pressure.
12. start and stop method according to claim 8, it is characterised in that if middle pressure drum pressure is more than the first predetermined pressure, it is judged that whether middle pressure steam water-level is less than or greater than the first predetermined water level.
13. start and stop method according to claim 8, it is characterised in that if middle pressure steam water-level is more than the first predetermined water level, it is judged that whether middle pressure drum watering pipeline water filling completes.
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| CN105003904B (en) * | 2015-08-05 | 2017-03-29 | 北京京桥热电有限责任公司 | A kind of boiler economizer emptier |
| CN106765028A (en) * | 2017-01-22 | 2017-05-31 | 华北电力科学研究院有限责任公司 | A kind of power plant boiler starts boiler circuit and its start-up and shut-down control method |
| CN108325730B (en) * | 2018-04-13 | 2020-02-14 | 中国神华能源股份有限公司 | Method and device for controlling pulverizing system |
| CN115247581B (en) * | 2021-04-28 | 2024-08-06 | 华能北京热电有限责任公司 | Circulating water flow control module of gas-steam combined cycle two-to-one unit |
| CN113464924A (en) * | 2021-07-27 | 2021-10-01 | 山西沃能化工科技有限公司 | Method for improving stability of boiler feed water |
| CN114543072B (en) * | 2022-02-14 | 2023-08-29 | 上海发电设备成套设计研究院有限责任公司 | Self-treatment device system and method for water impact of water supply pipeline of thermal power generating unit |
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| JPS54112402A (en) * | 1978-02-23 | 1979-09-03 | Toshiba Corp | Supply water control system |
| CN203605211U (en) * | 2013-10-28 | 2014-05-21 | 中国能源建设集团广东省电力设计研究院 | Water feeding system of boiler |
| CN203586188U (en) * | 2013-11-05 | 2014-05-07 | 中国石油化工股份有限公司 | Water supply system capable of automatically controlling pressure |
| CN203628621U (en) * | 2013-12-28 | 2014-06-04 | 临沂恒昌焦化股份有限公司 | Medium-pressure boiler water-circulation system |
| CN103807847A (en) * | 2014-02-16 | 2014-05-21 | 国家电网公司 | Large-capacity boiler whole-course water feeing control system |
| CN204438089U (en) * | 2015-02-02 | 2015-07-01 | 华北电力科学研究院有限责任公司 | Pressure water supply system in gas power station |
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