CN204438088U - Gas power station high-pressure feed water system - Google Patents
Gas power station high-pressure feed water system Download PDFInfo
- Publication number
- CN204438088U CN204438088U CN201520071025.0U CN201520071025U CN204438088U CN 204438088 U CN204438088 U CN 204438088U CN 201520071025 U CN201520071025 U CN 201520071025U CN 204438088 U CN204438088 U CN 204438088U
- Authority
- CN
- China
- Prior art keywords
- pressure
- water
- steam drum
- superheater
- pump
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 341
- 238000005086 pumping Methods 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims description 12
- 230000002209 hydrophobic effect Effects 0.000 description 26
- 238000000034 method Methods 0.000 description 23
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000009172 bursting Effects 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000037452 priming Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
Landscapes
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
A kind of gas power station high-pressure feed water system, comprising: HP steam drum system and high-pressure feed water pumping system, HP steam drum system connects high-pressure feed water pumping system; HP steam drum system comprises: water bypass on water main road, HP steam drum on HP steam drum, the first high-pressure economizer, the second high-pressure economizer, third high pressure economizer, HP steam drum, high-pressure superheater pipeline, high pressure evaporator, the first high-pressure superheater, the second high-pressure superheater and third high pressure superheater; High-pressure feed water pumping system comprises: the first in parallel high pressure water pump branch road and the second high pressure water pump branch road, and after described first high pressure water pump branch road and the second high pressure water pump branch circuit parallel connection, one end connection low-pressure drum, the other end is connected to described high-pressure economizer.By the utility model, high-pressure steam manifold stage can be controlled at desired value, and ensure the normal upper water of HP steam drum.
Description
Technical field
The utility model is about gas power station high-pressure feed water technology, particularly about a kind of gas power station high-pressure feed water system.
Background technology
High-pressure steam manifold stage cannot be controlled at desired value in existing gas power station high-pressure feed water system, and the normal upper water of HP steam drum cannot be ensured.
Utility model content
The utility model embodiment provides a kind of gas power station high-pressure feed water system, so that high-pressure steam manifold stage is controlled at desired value, and ensures the normal upper water of HP steam drum.
To achieve these goals, the utility model embodiment provides a kind of gas power station high-pressure feed water system, described gas power station high-pressure feed water system comprises: HP steam drum system and high-pressure feed water pumping system, and described HP steam drum system connects described high-pressure feed water pumping system;
Described HP steam drum system comprises: water bypass on water main road, HP steam drum on HP steam drum, the first high-pressure economizer, the second high-pressure economizer, third high pressure economizer, HP steam drum, high-pressure superheater pipeline, high pressure evaporator, the first high-pressure superheater, the second high-pressure superheater and third high pressure superheater;
After on described HP steam drum, on water main road and HP steam drum, water bypass is connected in parallel, one end is connected to described HP steam drum, and the other end is connected to described high pressure water pump by described first high-pressure economizer on supply line, the second high-pressure economizer, third high pressure economizer; Entrance and the outlet of described high pressure evaporator are connected to HP steam drum respectively; Described first high-pressure superheater, the second high-pressure superheater and third high pressure superheater is arranged on described high-pressure superheater pipeline, described HP steam drum is connected to the entrance of described first high-pressure superheater, and the outlet of described first high-pressure superheater is connected to high pressure turbine by by the second high-pressure superheater and third high pressure superheater successively and removes cold pipeline again and steam turbine place pipeline;
Described high-pressure feed water pumping system comprises: the first high pressure water pump branch road in parallel and the second high pressure water pump branch road, after described first high pressure water pump branch road and the second high pressure water pump branch circuit parallel connection, one end connects low-pressure drum, and the other end is connected to described high-pressure economizer; Pressing on the direction of economizer by feeding water from low-pressure drum to described third high, described first high pressure water pump branch road being provided with successively the first pump intake motor-driven valve, the first pump intake filter screen, the first high pressure water pump and the first pump discharge motor-driven valve; Feed water on the direction of described high-pressure economizer by from low-pressure drum, described second high pressure water pump branch road is provided with successively the second pump intake motor-driven valve, the second pump intake filter screen, the second high pressure water pump and the second pump discharge motor-driven valve;
Described first high pressure water pump is connected by high pressure water pump connecting line with described second high pressure water pump, by described first high pressure water pump to the direction of described second high pressure water pump, this high pressure water pump connecting line is disposed with the first non-return flap, the first pump tap motor-driven valve, the second pump tap motor-driven valve and the second non-return flap.
In one embodiment, water main road to be provided with described HP steam drum on HP steam drum water main road on water main road motor-driven valve and HP steam drum and to adjust valve; Water bypass to be provided with described HP steam drum on HP steam drum water bypass on water bypass motor-driven valve and HP steam drum and to adjust valve.
In one embodiment, the supply line between described first high-pressure economizer and high pressure water pump is disposed with emptying motor-driven valve, the first safety door and first flow orifice plate.
In one embodiment, on described high-pressure superheater pipeline, described high pressure turbine by goes the tie point of cold pipeline again and steam turbine place pipeline and described third high to press between superheater and is disposed with the second safety door, the 3rd safety door and second orifice.
In one embodiment, also comprise in described HP steam drum system: the first high-pressure superheater desuperheating water pipeline, one end of this first high-pressure superheater desuperheating water pipeline is connected to described second high-pressure superheater and third high is pressed on the pipeline between superheater, and the other end is connected on the supply line between described first high-pressure economizer and the emptying motor-driven valve of described high-pressure feed water; This first high-pressure superheater desuperheating water pipeline is disposed with the first high-pressure superheater desuperheating water motor-driven valve, the 3rd flow-through orifice and the first high-pressure superheater desuperheating water and adjusts valve.
In one embodiment, also comprise in described HP steam drum system: the second high-pressure superheater desuperheating water pipeline, this the second high-pressure superheater desuperheating water pipeline one end is connected on the supply line between the emptying motor-driven valve of described high-pressure feed water and the first safety door, and the other end is connected to the second safety door and third high is pressed on the pipeline between superheater; This high-pressure superheater desuperheating water pipeline is arranged the second high-pressure superheater desuperheating water motor-driven valve, the 4th flow-through orifice and the second high-pressure superheater desuperheating water and adjust valve.
In one embodiment, be also provided with in described HP steam drum system: high-pressure feed water system program control logic action button, high pressure water pump preliminary election button, HP steam drum allows upper water ACK button and the water filling of HP steam drum watering pipeline to complete ACK button.
In one embodiment, described high-pressure feed water pumping system is also provided with: the even differential pressure automatic button of the first pump liquid, the first pump interlocking are thrown standby button, the even differential pressure automatic button of the second pump liquid and the second pump interlocking and thrown standby button.
The beneficial effect of the utility model embodiment is, by the utility model, high-pressure steam manifold stage can be controlled at desired value, and ensures the normal upper water of HP steam drum.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the HP steam drum system of the utility model embodiment;
Fig. 2 is the structural representation of the high-pressure feed water pumping system of the utility model embodiment;
Fig. 3 is the setting up procedure flow chart of the gas power station high-pressure feed water system start and stop method of the utility model embodiment;
Fig. 4 is the stopping flow chart of steps of the gas power station high-pressure feed water system start and stop method of the utility model embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment provides a kind of gas power station high-pressure feed water system, and described gas power station high-pressure feed water system comprises: HP steam drum system and high-pressure feed water pumping system, and described HP steam drum system connects described high-pressure feed water pumping system.
As shown in Figure 1, described HP steam drum system comprises: the parts such as water bypass on water main road, HP steam drum, high-pressure superheater pipeline 51, high pressure evaporator 5, high-pressure superheater 6, high-pressure superheater 7 and high-pressure superheater 8 on HP steam drum 100, high-pressure economizer 2, high-pressure economizer 3, high-pressure economizer 4, HP steam drum.
After on HP steam drum, on water main road and HP steam drum, water bypass is connected in parallel, one end is connected to HP steam drum 100, and the other end is connected to high pressure water pump by the high-pressure economizer 4 on supply line 30, high-pressure economizer 3 and high-pressure economizer 2.The entrance (connecting the filter screen 48 on HP steam drum 100) of high pressure evaporator 5 and outlet are connected to HP steam drum 100 respectively.High-pressure superheater 6, high-pressure superheater 7 and high-pressure superheater 8 are arranged on high-pressure superheater pipeline 51, HP steam drum 100 is connected to the entrance of high-pressure superheater 6 by high-pressure superheater pipeline 51, the outlet of high-pressure superheater 6 is connected to high pressure turbine by by high-pressure superheater 7 and high-pressure superheater 8 successively and removes cold pipeline again 50 and steam turbine place pipeline (high pressure main steam), go cold pipeline again 50 to be provided with high pressure turbine by high pressure turbine by and adjust valve 25, high pressure turbine by goes cold pipeline again 50 finally to converge with high pressure main steam place pipeline, be connected to the middle pressure reheater of middle pressure boiler system.High-pressure superheater 6 and HP steam drum 100 are all connected to a HP steam drum bursting diaphragm 19.
Water main road to be provided with HP steam drum on HP steam drum water main road on water main road motor-driven valve 13 and HP steam drum and to adjust valve 14.Water bypass to be provided with HP steam drum on HP steam drum water bypass on water bypass motor-driven valve 15 and HP steam drum and to adjust valve 16.Supply line 30 on high-pressure economizer 4 and HP steam drum on water main road and HP steam drum between water bypass is connected with high-pressure economizer hydrophobic pipeline 31, this high-pressure economizer hydrophobic pipeline 31 is connected with high-pressure economizer and exports hydrophobic motor-driven valve 17 and high-pressure economizer exports hydrophobic motor-driven valve 18.Supply line 30 between high-pressure economizer 2 and high pressure water pump is disposed with the emptying motor-driven valve 1 of high-pressure feed water, safety door 32 and flow-through orifice 33.Pipeline between the entrance of high pressure evaporator 5 and HP steam drum 100 is connected with high pressure evaporator hydrophobic pipeline 34, and high pressure evaporator hydrophobic pipeline 34 is provided with the hydrophobic motor-driven valve 22 of high pressure evaporator import.
High-pressure superheater 8 and high pressure turbine by go the high-pressure superheater pipeline 51 between cold pipeline again and steam turbine is disposed with safety door 36, safety door 37 and flow-through orifice 38, pipeline between safety door 37 and flow-through orifice 38 is provided with the emptying pipeline 39 of high pressure main steam, the emptying pipeline of this high pressure main steam 39 is provided with the emptying motor-driven valve of high pressure main steam 23 and the emptying motor-driven valve 24 of high pressure main steam.
A high-pressure superheater desuperheating water pipeline 40 is also comprised in HP steam drum system of the present utility model, one end of this high-pressure superheater desuperheating water pipeline 40 is connected on the pipeline between high-pressure superheater 7 and high-pressure superheater 8, and the other end of this high-pressure superheater desuperheating water pipeline 40 is connected on the supply line 30 between high-pressure economizer 2 and the emptying motor-driven valve 1 of high-pressure feed water.This high-pressure superheater desuperheating water pipeline 40 is provided with high-pressure superheater desuperheating water motor-driven valve 9 and high-pressure superheater desuperheating water tune valve 10, high-pressure superheater desuperheating water motor-driven valve 9 and high-pressure superheater desuperheating water adjust valve high-pressure economizer 10 to be provided with flow-through orifice 41.
Another high-pressure superheater desuperheating water pipeline 42 is also comprised in HP steam drum system of the present utility model, this high-pressure superheater desuperheating water pipeline 42 one end is connected on the supply line 30 between the emptying motor-driven valve 1 of high-pressure feed water and safety door 32, and this high-pressure superheater desuperheating water pipeline 42 other end is connected on the pipeline between safety door 36 and high-pressure superheater 8.This high-pressure superheater desuperheating water pipeline 42 is arranged high-pressure superheater desuperheating water motor-driven valve 11 and high-pressure superheater desuperheating water tune valve 12, high-pressure superheater desuperheating water motor-driven valve 11 and high-pressure superheater desuperheating water are adjusted between valve 12 and are also provided with a flow-through orifice 43.
In addition, this HP steam drum 100 is also connected with safety door 44, safety door 45 and safety door 46, this HP steam drum 100 also connects an emergency blowoff pipeline 47, this emergency blowoff pipeline 47 is provided with the urgent hydrophobic motor-driven valve 20 of HP steam drum and the urgent hydrophobic motor-driven valve 21 of HP steam drum.
As shown in Figure 1, high-pressure feed water system program control logic action button a1, high pressure water pump preliminary election button a2, HP steam drum allows upper water ACK button a3 and the water filling of HP steam drum watering pipeline to complete ACK button a4.
As shown in Figure 2, described high-pressure feed water pumping system comprises: #1 high pressure water pump branch road 220 in parallel and #2 high pressure water pump branch road 221, and pipeline one end of this parallel connection connects low-pressure drum, and the other end is connected to high-pressure economizer 2.Feed water on the direction of high-pressure economizer 2 by from low-pressure drum, #1 high pressure water pump branch road 220 is provided with successively #1 pump intake motor-driven valve 201, inlet screen 3, #1 high pressure water pump 205, #1 pump discharge motor-driven valve 209.Feed water on high-pressure economizer direction by from low-pressure drum, #2 high pressure water pump branch road 221 is provided with successively #2 pump intake motor-driven valve 202, inlet screen 204, #2 high pressure water pump 206, #2 pump discharge motor-driven valve 210.
#1 high pressure water pump 205 is connected by high pressure water pump connecting line 222 with #2 high pressure water pump 206, by the direction of #1 high pressure water pump 205 to #2 high pressure water pump 206, this high pressure water pump connecting line 222 is disposed with non-return flap 223, #1 pump tap motor-driven valve 211, #2 pump tap motor-driven valve 212 and non-return flap 224.
In addition, #1 high pressure water pump 205 and the #1 high pressure water pump branch road 220 of #1 pump discharge motor-driven valve 209 are connected with 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 motor-driven valve 207, this hydraulic pipeline 216 is provided with the hydrophobic motor-driven valve 213 of #1 pump discharge; #2 high pressure water pump 206 and the #2 high pressure water pump branch road 221 of #2 pump discharge motor-driven valve 210 are connected with 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 motor-driven valve 208, this hydraulic pipeline 218 is provided with the hydrophobic motor-driven valve 214 of #1 pump discharge.
High-pressure feed water pumping system is also arranged four buttons, respectively: (button), the #1 pump interlocking throwing standby (button) automatically of the even differential pressure of #1 pump liquid, (button) and the #2 pump interlocking throwing standby (button) automatically of the even differential pressure of #2 pump liquid.3) by clicking the even differential pressure of #1 pump liquid, (button) and the even differential pressure of #2 pump liquid automatically (button), can select preliminary election No. 1 high pressure water pump and preliminary election No. 2 high pressure water pumps respectively automatically.
In high-pressure feed water pumping system described in HP steam drum system shown in Fig. 1 and Fig. 2, HP steam drum 100 effect receives the feedwater from low-pressure drum, and will be supplied to steam turbine high-pressure cylinder acting by the superheated steam heated as reservoir vessel.The function of high pressure water pump (#1 high pressure water pump 205 and #2 high pressure water pump 206) is the feedwater of suction low-pressure drum and provides pressure head, is delivered to HP steam drum 100, ensures the normal upper water of HP steam drum; High-pressure feed water pump discharge provides part feedwater to high pressure turbine by do desuperheating water use in addition, and high-pressure feed water pump discharge provides part feedwater to do desuperheating water to high-pressure superheater (high-pressure superheater 7 and high-pressure superheater 8) and uses.High-pressure feed water pipeline (on HP steam drum water bypass on water main road and HP steam drum) there is water on two-way to adjust valve and motor-driven valve after adjusting valve, main road upper hose footpath is larger, bypass upper hose footpath is less, use water bypass on HP steam drum to adjust valve to control flow to be more suitable for, therefore on HP steam drum, water bypass adjusts valve in programmed logic, be used for water and throw water level and automatically control.Low-pressure drum feedwater is sucked by high pressure water pump and provides certain pressure head to be heated through high-pressure economizer 2, adjust valve and motor-driven valve to control feedwater flow by water bypass on HP steam drum and deliver to HP steam drum, feedwater in HP steam drum is constantly heated to high steam by high pressure evaporator and returns HP steam drum 100, and steam in HP steam drum 100 is heated to superheated steam through high-pressure superheater and is supplied to steam turbine high-pressure cylinder acting.
By the utility model, high-pressure steam manifold stage can be controlled at desired value, and ensure the normal upper water of HP steam drum.
Fig. 3 is the setting up procedure flow chart of the gas power station high-pressure feed water system start and stop method of the utility model embodiment, and this setting up procedure is applied to the gas power station high-pressure feed water system shown in Fig. 1 and Fig. 2, and this setting up procedure comprises:
S301: judge whether some doors close, whether the recirculation motor-driven valve (#1 pump recirculation motor-driven valve 7 and #2 pump recirculation motor-driven valve 8) of two high pressure water pumps has opened and on HP steam drum, whether water bypass has thrown automatically;
Judge whether some doors have closed the pass feedback can passing through whether to receive some and judged, some doors comprise: #1 pump discharge motor-driven valve 209, #2 pump discharge motor-driven valve 210, the hydrophobic motor-driven valve 213 of #1 pump discharge, the hydrophobic motor-driven valve 214 of #2 pump discharge, high-pressure superheater desuperheating water motor-driven valve 9, high-pressure superheater desuperheating water adjusts valve 10, high-pressure superheater desuperheating water motor-driven valve 11, high-pressure superheater desuperheating water adjusts valve 12, the urgent hydrophobic motor-driven valve 20 of HP steam drum, the urgent hydrophobic motor-driven valve 21 of HP steam drum, high-pressure economizer exports hydrophobic motor-driven valve 17, high-pressure economizer exports hydrophobic motor-driven valve 18, the hydrophobic motor-driven valve 25 of high pressure evaporator import, the hydrophobic motor-driven valve 26 of high pressure evaporator import, water main road motor-driven valve 14 on HP steam drum, on HP steam drum, water main road adjusts valve 15, on HP steam drum, on water bypass motor-driven valve 16 and HP steam drum, valve 17 is adjusted in water bypass.
If some doors close, the recirculation motor-driven valve of two high pressure water pumps has been opened and on HP steam drum, water bypass has been thrown automatically, carries out S303, otherwise, carry out S302, send out the recirculation motor-driven valve of two high pressure water pumps, water bypass on HP steam drum is thrown automatically, and close #1 pump discharge motor-driven valve 209, #2 pump discharge motor-driven valve 210, the hydrophobic motor-driven valve 211 of #1 pump discharge, the hydrophobic motor-driven valve 212 of #2 pump discharge, high-pressure superheater desuperheating water motor-driven valve 9, high-pressure superheater desuperheating water adjusts valve 10, high-pressure superheater desuperheating water motor-driven valve 11, high-pressure superheater desuperheating water adjusts valve 12, the urgent hydrophobic motor-driven valve 20 of HP steam drum, the urgent hydrophobic motor-driven valve 21 of HP steam drum, high-pressure economizer exports hydrophobic motor-driven valve 18, high-pressure economizer exports hydrophobic motor-driven valve 19, the hydrophobic motor-driven valve 22 of high pressure evaporator import, water main road motor-driven valve 13 on HP steam drum, on HP steam drum, water main road adjusts valve 14, on HP steam drum, on water bypass motor-driven valve 15 and HP steam drum, the instruction of valve 16 is adjusted in water bypass.
S303: judge whether to there is the high pressure water pump run, the high pressure water pump if there is no run carries out S304; Otherwise, carry out S306.Be judged whether high-pressure feed water pump operation in this step, if without pump operation, continue next step, if there is pump operation, skip to S306.This avoid the original running status of interference high-pressure feed water system, it also avoid the repeated priming work of high pressure water pump.
S304: judge whether the high pressure water pump of preliminary election has run more than first scheduled time (such as 30 seconds), in this step, can by selecting preliminary election No. 1 high pressure water pump and preliminary election No. 2 high pressure water pumps.If the high pressure water pump off-duty of preliminary election or operation, more than first scheduled time, carry out S305, send the instruction of the high pressure water pump starting preliminary election.If the high-pressure feed water pump operation of preliminary election was more than 30 seconds, carry out S306.
S306: judge that HP steam drum pressure is less than or greater than the first predetermined pressure (such as 0.1MPa), if HP steam drum pressure is less than the first predetermined pressure, carry out S307; If HP steam drum pressure is greater than the first predetermined pressure, carry out S309.This step considers HP steam drum and has been in hot situation, therefore this step avoids the original running status of interference high-pressure feed water system, it also avoid the repeated priming work of high-pressure feed water system.
S307: judge whether the emptying motor-driven valve of HP steam drum is opened, if not, carry out S308, sends the instruction of opening the emptying motor-driven valve of HP steam drum.
S309: judge that high-pressure steam manifold stage is less than or greater than the first predetermined water level (such as-200mm), if high-pressure steam manifold stage is less than the first predetermined water level, carry out S310; If high-pressure steam manifold stage is greater than the first predetermined water level, carry out S313.This step considers the situation that high-pressure steam manifold stage has reached desired value, therefore this step avoids the original running status of interference high-pressure feed water system, and the water conservancy project that repeats that it also avoid high-pressure feed water system is done.
S310: judge whether HP steam drum wall temperature is less than the first predetermined temperature (being such as 120 degree), or whether receive the upper water manual confirmation of permission, if HP steam drum wall temperature is less than the first predetermined temperature, or receive the upper water manual confirmation of permission, carry out S311.If be greater than 120 DEG C, power plant operations staff can according to the temperature difference of coolant-temperature gage on the wall temperature of HP steam drum and HP steam drum, and judging whether can to water on HP steam drum.
S311: judge whether HP steam drum watering pipeline (supply line 30) water filling completes and (ACK button can be completed by click water filling and judge whether water filling completes, when operations staff observe the exhaust of HP steam drum supply line bursting diaphragm terminate and continuously water breakthrough time, pipeline water filling can be clicked and complete ACK button, continue next step); If the water filling of HP steam drum watering pipeline does not complete, carry out S312, send the instruction of open shop high-pressure feed water pump discharge Electrically operated gate second scheduled time (such as 10S); Otherwise, carry out S313.
S313: judge whether the high-pressure feed water pump discharge Electrically operated gate run is opened, if not, carries out S314, send the instruction of opening the high-pressure feed water pump discharge Electrically operated gate run; If the high-pressure feed water pump discharge Electrically operated gate run is opened, carry out S315.
S315: judge whether the even differential pressure of high pressure water pump liquid drops into automatically, if not, carries out S316, send and drop into the automatic instruction of the even differential pressure of high pressure water pump liquid, in one embodiment, setting value is 1.5MPa.If the even differential pressure of high pressure water pump liquid drops into automatically, carry out S317.
S317: judge on HP steam drum, whether water bypass valve is opened to predetermined aperture (such as 10%), and on HP steam drum, whether water bypass motor-driven valve is opened, and whether high pressure water pump interlocking drops into.After high pressure water pump interlocking drops into, when high-pressure feed water pump discharge main-piping pressure is lower than certain definite value; Or when having arbitrary high pressure water pump to trip, all can another high pressure water pump of interlocked startup, thus ensure that high-pressure feed water pump discharge main-piping pressure is normal.
If water bypass valve is opened to predetermined aperture on HP steam drum, and on HP steam drum, water bypass motor-driven valve is opened, and high pressure water pump interlocking drops into, carries out S319; Otherwise, carry out S318, send and water bypass valve on HP steam drum is opened to predetermined aperture, and water bypass motor-driven valve on HP steam drum is opened, and the instruction dropped into that high pressure water pump is interlocked.
S319: judge whether the water level of HP steam drum is greater than described first predetermined water level (-200mm), if so, carries out S320.
S320: to judge in HP steam drum bypass whether water regulating valve water level has dropped into and whether time delay 1 minute automatically, if water regulating valve water level has dropped into and time delay 1 minute automatically in HP steam drum bypass, has carried out S322; Otherwise, carry out S321, send and throw the automatic instruction of water regulating valve water level on HP steam drum.
The start and stop method (programme-control enable logic) of this gas power station high-pressure feed water system can meet the automatic control to water pressure on HP steam drum and steam water-level, therefore also just meets the automatic control to water on HP steam drum under different load operating mode.The automatic control of upper water pressure is automatically realized by the even differential pressure of the liquid of throwing high pressure water pump, is embodied in S315; The automatic control of steam water-level adjusts the water lev el control of valve to realize by throwing water on HP steam drum, is embodied in S320.
S322: judge whether combustion engine has fire and whether HP steam drum pressure is greater than described first predetermined pressure (0.1MPa), if combustion engine has fire and HP steam drum pressure is greater than described first predetermined pressure, carries out S323.
S323: judge high-pressure steam manifold stage whether between predetermined water level interval (such as-50mm is to 50mm) and the emptying motor-driven valve of HP steam drum whether close; If high-pressure steam manifold stage is not between predetermined water level interval, or the emptying motor-driven valve of HP steam drum does not close, carry out S324, send and throw water regulating valve water level automatic (such as setting value 0mm) in HP steam drum bypass, and close the instruction of the emptying motor-driven valve of HP steam drum.
In one embodiment, the condition that described setting up procedure operation performs is: low-pressure drum water level is greater than-1250mm.
By the flow process shown in Fig. 3, achieve this automatic startup of gas power station high-pressure feed water system under system full cut-off state.
Fig. 4 is the stopping flow chart of steps of the gas power station high-pressure feed water system start and stop method of the utility model embodiment, and described stopping step comprising:
S401: judge combustion engine whether put out a fire and on HP steam drum water bypass adjust valve whether close, if combustion engine fire extinguishing and on HP steam drum water bypass adjust valve close, carry out S402.
S402: judge whether high pressure water pump interlocking exits, if so, carries out S404; Otherwise, carry out S403 and send the instruction exiting high pressure water pump interlocking.
S404: judge whether HP steam drum feedwater main road control valve and HP steam drum feed water by-pass control valve are all switched to manually and close, and whether two high pressure water pumps all stop, and if so, carry out S406; Otherwise, carry out S405, send stop two high pressure water pumps, whether fed water by HP steam drum main road control valve and HP steam drum feed water by-pass control valve are all switched to manually and the instruction of closing.
S406: judge whether two high pressure water pump outlet electric valve close; If two high pressure water pump outlet electric valve are closed, carry out S408; Otherwise carry out S407, send the instruction of closedown two high pressure water pump outlet electric valve.
S408: to judge on HP steam drum on water main road motor-driven valve and HP steam drum whether water bypass motor-driven valve closes and whether high-pressure superheater desuperheating water motor-driven valve is switched to manually and closes, if not, carry out S409, send and to close on HP steam drum water bypass motor-driven valve on water main road motor-driven valve and HP steam drum, and high-pressure superheater desuperheating water motor-driven valve is switched to manually and the instruction of closing.
By the flow process shown in Fig. 4, achieve the automatic stopping under operation of gas power station high-pressure feed water system.
Start and stop method of the present utility model is divided into setting up procedure and stops step two parts, 4 artificial action buttons are comprised: high-pressure feed water system program control logic action button a1 in HP steam drum system, high pressure water pump preliminary election button a2, HP steam drum allows upper water ACK button a3 and the water filling of HP steam drum watering pipeline to complete ACK button a4.Start and stop method of the present utility model, achieves following function:
The first, the automation achieved under the automation start-up and operation state of gas power station high-pressure feed water system under full cut-off state stops;
The second, achieve the automation of gas power station high-pressure feed water system under part starting state start and do not disturb original running status;
Three, artificial judgement is taken into account, the leapfrog that can realize gas power station high-pressure feed water system journey start and stop method runs, when the condition of a certain step of start and stop method is unrealized cause other step to carry out time, whether Rule of judgment that can be artificial can be ignored and operate leapfrog action, continues the operation of start and stop method until complete.
In the utility model, determination methods in Fig. 3 and Fig. 4 needs to carry out (if judging whether valve is opened by the feedback judging whether to receive valve opening) based on the feedback received, when the start and stop method (programed logic) of gas power station high-pressure feed water system proceeds to a certain step, when not receiving due feedback signal, programed logic can rest on this step, waits for manual operation.Power plant operations staff can find the unreceived feedback signal of current operation step sequence, artificially judges whether unreceived feedback signal affects the continuation execution of programed logic.If this feedback signal does not affect proceeding of present procedure control logic, operations staff can operate the execution that leapfrog action continues programed logic; If this feedback signal affects proceeding of present procedure control logic, then operations staff according to each the unsatisfied feedback signal found, can go investigation problem targetedly, until after receiving this feedback signal, continues performing a programme control logic.
Apply specific embodiment in the utility model to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (8)
1. a gas power station high-pressure feed water system, is characterized in that, described gas power station high-pressure feed water system comprises: HP steam drum system and high-pressure feed water pumping system, and described HP steam drum system connects described high-pressure feed water pumping system;
Described HP steam drum system comprises: water bypass on water main road, HP steam drum on HP steam drum, the first high-pressure economizer, the second high-pressure economizer, third high pressure economizer, HP steam drum, high-pressure superheater pipeline, high pressure evaporator, the first high-pressure superheater, the second high-pressure superheater and third high pressure superheater;
After on described HP steam drum, on water main road and HP steam drum, water bypass is connected in parallel, one end is connected to described HP steam drum, and the other end is connected to described high pressure water pump by described first high-pressure economizer on supply line, the second high-pressure economizer, third high pressure economizer; Entrance and the outlet of described high pressure evaporator are connected to HP steam drum respectively; Described first high-pressure superheater, the second high-pressure superheater and third high pressure superheater is arranged on described high-pressure superheater pipeline, described HP steam drum is connected to the entrance of described first high-pressure superheater, and the outlet of described first high-pressure superheater is connected to high pressure turbine by by the second high-pressure superheater and third high pressure superheater successively and removes cold pipeline again and steam turbine place pipeline;
Described high-pressure feed water pumping system comprises: the first high pressure water pump branch road in parallel and the second high pressure water pump branch road, after described first high pressure water pump branch road and the second high pressure water pump branch circuit parallel connection, one end connects low-pressure drum, and the other end is connected to described high-pressure economizer; Pressing on the direction of economizer by feeding water from low-pressure drum to described third high, described first high pressure water pump branch road being provided with successively the first pump intake motor-driven valve, the first pump intake filter screen, the first high pressure water pump and the first pump discharge motor-driven valve; Feed water on the direction of described high-pressure economizer by from low-pressure drum, described second high pressure water pump branch road is provided with successively the second pump intake motor-driven valve, the second pump intake filter screen, the second high pressure water pump and the second pump discharge motor-driven valve;
Described first high pressure water pump is connected by high pressure water pump connecting line with described second high pressure water pump, by described first high pressure water pump to the direction of described second high pressure water pump, this high pressure water pump connecting line is disposed with the first non-return flap, the first pump tap motor-driven valve, the second pump tap motor-driven valve and the second non-return flap.
2. gas power station high-pressure feed water system according to claim 1, is characterized in that, water main road to be provided with described HP steam drum on HP steam drum water main road on water main road motor-driven valve and HP steam drum and to adjust valve; Water bypass to be provided with described HP steam drum on HP steam drum water bypass on water bypass motor-driven valve and HP steam drum and to adjust valve.
3. gas power station high-pressure feed water system according to claim 1, is characterized in that, the supply line between described first high-pressure economizer and high pressure water pump is disposed with emptying motor-driven valve, the first safety door and first flow orifice plate.
4. gas power station high-pressure feed water system according to claim 1, it is characterized in that, on described high-pressure superheater pipeline, described high pressure turbine by goes the tie point of cold pipeline again and steam turbine place pipeline and described third high to press between superheater and is disposed with the second safety door, the 3rd safety door and second orifice.
5. gas power station high-pressure feed water system according to claim 1, it is characterized in that, also comprise in described HP steam drum system: the first high-pressure superheater desuperheating water pipeline, one end of this first high-pressure superheater desuperheating water pipeline is connected to described second high-pressure superheater and third high is pressed on the pipeline between superheater, and the other end is connected on the supply line between described first high-pressure economizer and the emptying motor-driven valve of described high-pressure feed water; This first high-pressure superheater desuperheating water pipeline is disposed with the first high-pressure superheater desuperheating water motor-driven valve, the 3rd flow-through orifice and the first high-pressure superheater desuperheating water and adjusts valve.
6. gas power station high-pressure feed water system according to claim 1, it is characterized in that, also comprise in described HP steam drum system: the second high-pressure superheater desuperheating water pipeline, this the second high-pressure superheater desuperheating water pipeline one end is connected on the supply line between the emptying motor-driven valve of described high-pressure feed water and the first safety door, and the other end is connected to the second safety door and third high is pressed on the pipeline between superheater; This high-pressure superheater desuperheating water pipeline is arranged the second high-pressure superheater desuperheating water motor-driven valve, the 4th flow-through orifice and the second high-pressure superheater desuperheating water and adjust valve.
7. gas power station high-pressure feed water system according to claim 1, it is characterized in that, also be provided with in described HP steam drum system: high-pressure feed water system program control logic action button, high pressure water pump preliminary election button, HP steam drum allows upper water ACK button and the water filling of HP steam drum watering pipeline to complete ACK button.
8. gas power station high-pressure feed water system according to claim 1, it is characterized in that, described high-pressure feed water pumping system is also provided with: the even differential pressure automatic button of the first pump liquid, the first pump interlocking are thrown standby button, the even differential pressure automatic button of the second pump liquid and the second pump interlocking and thrown standby button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520071025.0U CN204438088U (en) | 2015-02-02 | 2015-02-02 | Gas power station high-pressure feed water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520071025.0U CN204438088U (en) | 2015-02-02 | 2015-02-02 | Gas power station high-pressure feed water system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204438088U true CN204438088U (en) | 2015-07-01 |
Family
ID=53605950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520071025.0U Active CN204438088U (en) | 2015-02-02 | 2015-02-02 | Gas power station high-pressure feed water system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204438088U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613462A (en) * | 2015-02-02 | 2015-05-13 | 华北电力科学研究院有限责任公司 | High-pressure water supply system for fuel gas thermal power plant and start and stop method thereof |
| CN106801863A (en) * | 2017-02-06 | 2017-06-06 | 国家电网公司 | A kind of fired power generating unit feed water by-pass cuts the bypass valve control method during main road |
-
2015
- 2015-02-02 CN CN201520071025.0U patent/CN204438088U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104613462A (en) * | 2015-02-02 | 2015-05-13 | 华北电力科学研究院有限责任公司 | High-pressure water supply system for fuel gas thermal power plant and start and stop method thereof |
| CN104613462B (en) * | 2015-02-02 | 2016-06-15 | 华北电力科学研究院有限责任公司 | Gas power station high-pressure feed water system and start and stop method thereof |
| CN106801863A (en) * | 2017-02-06 | 2017-06-06 | 国家电网公司 | A kind of fired power generating unit feed water by-pass cuts the bypass valve control method during main road |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104613460B (en) | Pressure water supply system and start and stop method thereof in gas power station | |
| CN208606407U (en) | Preheating pressurization integrated gas water heater | |
| CN204438088U (en) | Gas power station high-pressure feed water system | |
| CN202230373U (en) | Automatic power plant start up & shut down system of gas-steam combined cycle unit | |
| CN211694312U (en) | Centralized lubricating system of continuous casting machine | |
| CN107885245A (en) | A kind of intelligent pressure control system | |
| CN104613462B (en) | Gas power station high-pressure feed water system and start and stop method thereof | |
| CN101922613B (en) | Fuel gas automatic current limiting control method | |
| CN204438089U (en) | Pressure water supply system in gas power station | |
| CN112363446B (en) | One-key control device and method for co-construction station mutual-conversion process flow | |
| CN204395959U (en) | A kind of anticorrosion reaction unit of temperature-control pressure-control | |
| CN205330945U (en) | Public electric feed water pump's of thermal generator set control system | |
| CN106503452A (en) | Method and system for municipal sewage treatment pipe network dynamic load leveling | |
| CN211353874U (en) | Automatic steam condensate discharging device for feed liquid injection pipeline of tobacco leaf charging machine | |
| CN206817175U (en) | Multi-quantity air compression station networking control device | |
| CN204478003U (en) | Gas power station two drags a unit steam vapour system | |
| CN211837404U (en) | Automatic liquid preparation device for nickel-cobalt-manganese ternary precursor | |
| CN104613461B (en) | Gas power station low pressure feed water system and start and stop method thereof | |
| CN204438090U (en) | Gas power station low pressure feed water system | |
| CN210141604U (en) | Automatic water supplementing and pressure stabilizing system of intelligent heat exchange unit | |
| CN209324441U (en) | Steam turbine electronic type oil spout test oil circuit switching device | |
| CN204460162U (en) | Gas power station two drags a unit high pressure steam system | |
| CN106196271A (en) | Heat exchange station is by once lateral secondary side direct moisturizing full-automatic energy-saving constant pressure arrangement | |
| CN208532662U (en) | A kind of PVC polymerization polymerization inhibitor device | |
| CN104613464A (en) | Gas thermal power plant one-dragging-one set condensate system and start and stop method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |