CN104613464A

CN104613464A - Gas thermal power plant one-dragging-one set condensate system and start and stop method thereof

Info

Publication number: CN104613464A
Application number: CN201510052525.4A
Authority: CN
Inventors: 任彦; 黄葆华; 司派友; 刘双白; 吕炜; 左川
Original assignee: State Grid Corp of China SGCC; North China Electric Power Research Institute Co Ltd
Current assignee: State Grid Corp of China SGCC; North China Electric Power Research Institute Co Ltd
Priority date: 2015-02-02
Filing date: 2015-02-02
Publication date: 2015-05-13
Anticipated expiration: 2035-02-02
Also published as: CN104613464B

Abstract

The invention provides a gas thermal power plant one-dragging-one set condensate system and a start and stop method thereof. The gas thermal power plant one-dragging-one set condensate system comprises a condensate booster pump recirculating main path, a condensate booster pump recirculating bypass, a first condensate booster pump branch, a second condensate booster pump branch, a first condensate pump branch, a second condensate pump branch, a condensate recirculating main path, a condensate recirculating bypass, a condensate booster pump recirculating pipeline, a condensate recirculating pipeline, a first condensate booster pump, a second condensate booster pump, a first condensate pump, a second condensate pump, a condenser, a sealing heater and a deironing filter. According to the gas thermal power plant two-dragging-one set condensate system, automatic start of the condensate system can be achieved under the full-stop state, automatic stop of the condensate system can be achieved under the running state, automatic start of the condensate system can be achieved under the state of partial start, and the original running state cannot be disturbed.

Description

A kind of gas power station one-to-one unit condensate system and start and stop method thereof

Technical field

The invention relates to gas power station condensate water technology, particularly about a kind of gas power station one-to-one unit condensate system and start and stop method thereof.

Background technology

The major function of gas power station condensate system, after condensate water being boosted by condensate pump, flows through gland heater, deironing filter is delivered to furnace side low-pressure drum; Be low pressure (LP) cylinder desuperheating water simultaneously, water curtain water spray, intermediate pressure by-pass desuperheating water, low-pressure by pass temperature-lowering water, three grades of desuperheating waters, coldly supply water to the miscellaneous user such as shaft seal desuperheating water, low pressure shaft seal desuperheating water, hydrophobic development unit desuperheating water again.But existing gas power station condensate system under full cut-off state, cannot realize the automatic startup of condensate system; Cannot under operation, realize the automatic stopping of condensate system and under the state that cannot start in part, realize the automatic startup of condensate system, and not disturbing original running status.

Summary of the invention

The embodiment of the present invention provides a kind of gas power station one-to-one unit condensate system and start and stop method thereof, with under full cut-off state, realizes the automatic startup of condensate system; Under operation, realize the automatic stopping of condensate system and realize the automatic startup of condensate system under the state started in part, and not disturbing original running status.

To achieve these goals, the embodiment of the present invention provides a kind of gas power station one-to-one unit condensate system, described gas power station one-to-one unit condensate system comprises: condensate water fore pump recirculation main road, condensate water fore pump recirculation bypass, first condensate water fore pump branch road, second condensate water fore pump branch road, first condensate pump branch road, second condensate pump branch road, condensate water recirculation main road, condensate water recirculation bypass, condensate water fore pump recirculating line, condensate return piping, first condensate water fore pump, second condensate water fore pump, first condensate pump, second condensate pump, condenser, gland heater and deironing filter,

After first condensate water fore pump branch road and the second condensate water fore pump branch circuit parallel connection, one end is connected to described condenser, one end that the other end is connected to one end of described condensate water fore pump recirculating line by described gland heater, the other end of described condensate water fore pump recirculating line is connected to described condensate water fore pump recirculation main road; The other end of described condensate water fore pump recirculation main road is connected to described condenser, and the two ends of described condensate water fore pump recirculation bypass are connected to the two ends of described condensate water fore pump recirculation main road;

Described first condensate water fore pump branch road is provided with the first condensate water fore pump entrance motor-driven valve, the first condensate water fore pump inlet screen, the first condensate water fore pump, the first condensate water fore pump outlet non-return door and the first condensate water fore pump outlet electric valve; Described second condensate water fore pump branch road is provided with the second condensate water fore pump entrance motor-driven valve, the second condensate water fore pump inlet screen, the second condensate water fore pump, the second condensate water fore pump outlet non-return door and the second condensate water fore pump outlet electric valve;

Described condensate water fore pump recirculation main road is provided with condensate water fore pump recirculation main road and adjusts valve and condensate water fore pump recirculation main road motor-driven valve, described condensate water fore pump recirculation bypass is provided with condensate water fore pump recirculation bypass motor-driven valve;

After described first condensate pump branch road and the second condensate pump branch circuit parallel connection, one end connects on described condensate water fore pump recirculating line, the other end connects one end of described condensate return piping, described deironing filter is arranged on described condensate return piping, one end of condensate water recirculation main road described in the other end of described condensate return piping, the other end of described condensate water recirculation main road connects described condenser; The two ends of described condensate water recirculation bypass connect the two ends of described condensate water recirculation main road respectively;

Described first condensate pump branch road is provided with the first condensate pump entrance motor-driven valve, the first condensate pump, the first condensate pump outlet non-return door and the first condensate pump outlet electric valve; Described second condensate pump branch road is provided with the second condensate pump entrance motor-driven valve, the second condensate pump, the second condensate pump outlet non-return door and the second condensate pump outlet electric valve;

Described condensate water recirculation main road is provided with condensate water recirculation main road motor-driven valve and condensate water recirculation main road adjusts valve, and described condensate water recirculation bypass is provided with condensate water recirculation bypass motor-driven valve;

The tie point that described condensate return piping and described condensate water recycle main road is connected the total door of the miscellaneous user of a condensate water, after water reduces iron ion content in described condensate return piping, flow to each miscellaneous user by the total door of the miscellaneous user of this condensate water.

In one embodiment, the total door of the miscellaneous user of described condensate water is connected to three grades of desuperheating water main roads and three grades of desuperheating water bypasses, three grades of desuperheating water main roads connect three grades of desuperheating water main road motor-driven valves and three grades of desuperheating water main roads tune valves, and three grades of desuperheating water bypasses are provided with three grades of desuperheating water bypass motor-driven valves.

In one embodiment; the total door of the miscellaneous user of described condensate water is connected to water curtain protection main road and water curtain protection bypass; described water curtain protection main road is provided with water curtain protection main road motor-driven valve and water curtain protection main road adjusts valve, and described water curtain protection bypass is provided with water curtain protection bypass motor-driven valve.

In one embodiment, the total door of the miscellaneous user of described condensate water is connected to boiler side hydrophobic development unit desuperheating water main road and the bypass of boiler side hydrophobic development unit desuperheating water, described boiler side hydrophobic development unit desuperheating water main road is provided with boiler side hydrophobic development unit desuperheating water main road motor-driven valve and boiler side hydrophobic development unit desuperheating water main road control valve, the bypass of boiler side hydrophobic development unit desuperheating water is provided with boiler side hydrophobic development unit desuperheating water bypass motor-driven valve.

In one embodiment, the total door of the miscellaneous user of described condensate water is connected to motor side hydrophobic development unit desuperheating water main road and the bypass of motor side hydrophobic development unit desuperheating water, described motor side hydrophobic development unit desuperheating water main road is arranged motor side hydrophobic development unit desuperheating water main road motor-driven valve and motor side hydrophobic development unit desuperheating water main road control valve, the bypass of described motor side hydrophobic development unit desuperheating water is provided with motor side hydrophobic development unit desuperheating water bypass motor-driven valve.

In one embodiment, the total door of the miscellaneous user of described condensate water is connected to low pressure shaft seal desuperheating water main road and the bypass of low pressure shaft seal desuperheating water, described low pressure shaft seal desuperheating water main road is provided with low pressure shaft seal desuperheating water main road motor-driven valve and low pressure shaft seal desuperheating water main road tune valve, the bypass of described low pressure shaft seal desuperheating water is provided with low pressure shaft seal desuperheating water bypass motor-driven valve.

In one embodiment, the total door of the miscellaneous user of described condensate water is connected to low pressure (LP) cylinder desuperheating water main road and the bypass of low pressure (LP) cylinder desuperheating water, described low pressure (LP) cylinder desuperheating water main road is provided with low pressure (LP) cylinder desuperheating water main road motor-driven valve and low pressure (LP) cylinder desuperheating water main road tune valve, the bypass of described low pressure (LP) cylinder desuperheating water is provided with low pressure (LP) cylinder desuperheating water bypass motor-driven valve.

In one embodiment, the total door of the miscellaneous user of described condensate water is connected to low other desuperheating water motor-driven valve and low other desuperheating water tune valve.

In one embodiment, the total door of the miscellaneous user of described condensate water is connected to middle other desuperheating water motor-driven valve and middle other desuperheating water tune valve.

In one embodiment, described condenser is also connected to condenser water replenishing bypass and adjusts valve and condenser water replenishing main road motor-driven valve.

In one embodiment, described gas power station one-to-one unit condensate system also comprises: condensate system programed logic action button, the preferred button of condensate water fore pump, the preferred button of energy saver mode select button, condensate pump.

To achieve these goals, the embodiment of the present invention provides a kind of start and stop method, and be applied to above-mentioned gas power station one-to-one unit condensate system, described start and stop method comprises setting up procedure, and described setting up procedure comprises:

Receive the feedback of status of condensate water fore pump and condensate pump, judge the state of condensate water fore pump and condensate pump;

If run without condensate water fore pump, judge whether one-to-one unit condensate system adjustment doors has closed and be switched to manual mode; If not, send and close one-to-one unit condensate system adjustment doors and be switched to the instruction of manual mode;

If one-to-one unit condensate system adjustment doors has all been closed and has been switched to manual mode, judge whether one-to-one unit condensate system Electrically operated gate closes; If not, the instruction of closing one-to-one unit condensate system Electrically operated gate is sent;

If one-to-one unit condensate system Electrically operated gate is closed all, judge that two condensate water prepositionly pump into, export Electrically operated gate and two condensate water pump into, export Electrically operated gate and whether open; If not, send out two condensate water prepositionly to pump into, export the instruction that Electrically operated gate and two condensate water pumped into, exported Electrically operated gate;

If two condensate water are preposition to be pumped into, export Electrically operated gate and two condensate water pump into, export Electrically operated gate and all open, judge that condenser water replenishing bypass adjusts valve whether to throw automatically; If condenser water replenishing bypass adjusts valve not throw automatically, send and adjust valve to throw automatic instruction condenser water replenishing bypass;

If condenser water replenishing bypass adjusts valve to throw automatically, judge that condensate water recirculation main road motor-driven valve and condensate water recirculation main road adjust valve whether to open, and whether the condensate water fore pump outlet electric valve of preliminary election closes; If not, send out condensate water recirculation main road motor-driven valve and condensate water recirculation main road tune valve, and close the instruction of the condensate water fore pump outlet electric valve of preliminary election;

If condensate water recirculation main road motor-driven valve and condensate water recirculation main road adjust valve all to open, and the condensate water fore pump outlet electric valve of preliminary election closes all, judges whether the condensate water fore pump of preliminary election runs; If the condensate water fore pump off-duty of preliminary election, send the instruction of the condensate water fore pump running preliminary election;

If the condensate water fore pump of preliminary election runs, judge whether the condensate water fore pump outlet electric valve of preliminary election is opened; If the condensate water fore pump outlet electric valve of preliminary election is not opened, send out the instruction of the condensate water fore pump outlet electric valve of preliminary election;

If the condensate water fore pump outlet electric valve of preliminary election is opened, judge whether preliminary election condensate water fore pump frequency converter has been thrown automatically and whether pressure is greater than the first predetermined pressure or arbitrary condensate water fore pump power frequency whether runs and whether condensate water fore pump outlet main-piping pressure is greater than described first predetermined pressure; If not, send and throw preliminary election condensate water fore pump frequency converter automatically, condensate water fore pump outlet main-piping pressure setting value rises to the instruction of first object force value with the first set rate;

If preliminary election condensate water fore pump frequency converter has thrown automatically and whether pressure is greater than the first predetermined pressure, or arbitrary condensate water fore pump power frequency operation and condensate water fore pump outlet main-piping pressure be greater than described first predetermined pressure, judge condensate water fore pump interlock whether dropped into and whether waited for the scheduled time; If not, the instruction of throwing condensate water fore pump interlocking is sent;

If condensate water fore pump interlocking has dropped into and waited for the scheduled time, judge whether preliminary election condensate pump outlet electric valve closes, and whether condensate pump import main-piping pressure is greater than the second predetermined pressure, and whether energy saver mode does not drop into; If not, the instruction of closing preliminary election condensate pump outlet electric valve is sent;

If preliminary election condensate pump outlet electric valve closes, and condensate pump import main-piping pressure is greater than the second predetermined pressure, and energy saver mode does not drop into, and judges whether the condensate pump of preliminary election runs; If the condensate pump off-duty of preliminary election, send the instruction of the condensate pump starting preliminary election;

If the condensate pump of preliminary election runs, judge whether the condensate pump outlet electric valve of preliminary election is opened; If the condensate pump outlet electric valve of preliminary election does not leave, send the instruction of the condensate pump outlet electric valve opening preliminary election;

If the condensate pump outlet electric valve of preliminary election leaves, judge the first condensate pump or the second condensate pump whether converting operation and frequency conversion has been thrown automatically and solidifying pump discharge main-piping pressure is greater than described second predetermined pressure; Or the first condensate pump or the second condensate pump whether power frequency operation and pump discharge main-piping pressure is greater than described second predetermined pressure; If the first condensate pump or the second Condensate Pump Frequency Conversion run, but solidifying pump discharge main-piping pressure is not more than described second predetermined pressure, sends and throws frequency converter automatically, pump discharge main-piping pressure is risen to the second target pressure value with the second set rate;

If the first condensate pump or the second Condensate Pump Frequency Conversion run and frequency conversion has been thrown automatically and solidifying pump discharge main-piping pressure is greater than described second predetermined pressure, or the first condensate pump or the second condensate pump power frequency operation and pump discharge main-piping pressure is greater than described second predetermined pressure, judge whether condensate pump interlocking has dropped into and condensate water fore pump recirculation main road adjusts valve to throw automatically; If condensate pump interlocking does not drop into or condensate water fore pump recirculation main road adjusts valve not throw automatically, or condensate pump interlocking does not drop into and condensate water fore pump recirculation main road adjusts valve not throw automatically, send to throw condensate pump interlocking and throw condensate water fore pump recirculation main road and adjust the automatic instruction of valve.

In one embodiment, described start and stop method also comprises stopping step, and described stopping step comprising:

Judge whether two condensate water fore pumps and two condensate pumps interlocking have exited and condensate water recirculation main road adjusts valve to be automatically switched to manually; If not, send excision two condensate water fore pumps and two condensate pumps interlocking, and condensate water is recycled main road and adjust valve to be switched to manual instruction;

If two condensate water fore pumps and two condensate pumps interlocking have exited and condensate water recirculation main road adjusts valve to be automatically switched to manually, judge whether two condensate water fore pumps and two condensate pumps all stop; If not, the instruction of stopping two condensate water fore pumps and two condensate pumps is sent;

If two condensate water fore pumps and two condensate pumps all stop, judging whether two condensate water fore pump outlet electric valve and two condensate pump outlet electric valve close all; If not, the instruction of closedown two condensate water fore pump outlet electric valve and two condensate pump outlet electric valve is sent;

If two condensate water fore pump outlet electric valve and two condensate pump outlet electric valve are closed all, judge condenser water replenishing bypass adjust valve whether to close and be switched to manually and condenser water replenishing main road motor-driven valve close; If not, send and close condenser water replenishing bypass tune valve and be switched to manually, and close the instruction of condenser water replenishing main road motor-driven valve.

In one embodiment, the enabled condition that described setting up procedure starts is: arbitrary demineralized water pump operation is normal and main-piping pressure is greater than 0.2Mpa, and condenser liquid level is greater than 400mm, and arbitrary enclosed cooling water pump runs and main-piping pressure is greater than 0.45Mpa.

In one embodiment, the service condition of described stopping step is: gland seal system is stopped transport and vacuum system is stopped transport.

In one embodiment, when judging the state of condensate water fore pump and condensate pump, if arbitrary condensate water fore pump runs and condensate pump full cut-off, judge whether preliminary election condensate water fore pump frequency converter has been thrown automatically and whether pressure is greater than the first predetermined pressure, or arbitrary condensate water fore pump power frequency whether runs and whether condensate water fore pump outlet main-piping pressure is greater than described first predetermined pressure.

In one embodiment, when judging the state of condensate water fore pump and condensate pump, if arbitrary condensate pump runs, judge the first condensate pump or the second condensate pump whether converting operation and frequency conversion has been thrown automatically and solidifying pump discharge main-piping pressure is greater than described second predetermined pressure; Or the first condensate pump or the second condensate pump whether power frequency operation and pump discharge main-piping pressure is greater than described second predetermined pressure.

Gas power station of the present invention " one-to-one " unit condensate system and start and stop method thereof can realize following effect:

Under gas power station " one-to-one " unit condensate system full cut-off state, realize the automatic startup of condensate system; Under operation, the automatic stopping of condensate system is realized.

Under the state that gas power station " one-to-one " unit condensate system part starts, realize the automatic startup of condensate system, and do not disturb original running status.

When gas power station " one-to-one " unit starting program moves to a certain step, condition does not meet, if artificially judge that this condition can be ignored, manually can carry out the operation that leapfrog action continues start-up routine, until condensate system starts complete.

The energy saver mode realizing gas power station " one-to-one " unit condensate system is selected.When selection energy saver mode, this program control enable logic only starts condensate water fore pump, does not start condensate pump, drives condensate water to be supplied to each user, thus realize energy-conservation object by condensate water fore pump.

Accompanying drawing explanation

In order to be illustrated more clearly in the embodiment of the present invention 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 some embodiments of the present invention, 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 gas power station one-to-one unit condensate system of the embodiment of the present invention;

Fig. 2 is the setting up procedure flow chart of the start and stop method of the embodiment of the present invention;

Fig. 3 is the stopping flow chart of steps of the start and stop method of the embodiment of the present invention.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

As shown in Figure 1, the embodiment of the present invention provides a kind of gas power station one-to-one unit condensate system, this gas power station one-to-one unit condensate system comprises: condensate water fore pump recirculation main road 52, condensate water fore pump recirculation bypass 53, #1 condensate water fore pump branch road 54, #2 condensate water fore pump branch road 55, #1 condensate pump branch road 56, #2 condensate pump branch road 57, condensate water recirculation main road 58, condensate water recirculation bypass 59, condensate water fore pump recirculating line 60, condensate return piping 61, #1 condensate water fore pump 20, #2 condensate water fore pump 25, #1 condensate pump 29, #2 condensate pump 33, condenser, gland heater and deironing filter.

After #1 condensate water fore pump branch road 54 is in parallel with #2 condensate water fore pump branch road 55, one end is connected to condenser, one end that the other end is connected to one end of described condensate water fore pump recirculating line 60 by described gland heater, the other end of condensate water fore pump recirculating line 60 is connected to described condensate water fore pump recirculation main road 52; The other end of described condensate water fore pump recirculation main road 52 is connected to condenser, and the two ends of described condensate water fore pump recirculation bypass 53 are connected to the two ends of described condensate water fore pump recirculation main road 52.It should be noted that described condensate water fore pump recirculation main road 52 can as a part for condensate water fore pump recirculating line 60.

#1 condensate water fore pump branch road 54 is provided with #1 condensate water fore pump entrance motor-driven valve 18, #1 condensate water fore pump inlet screen 19, #1 condensate water fore pump 20, #1 condensate water fore pump outlet non-return door 21 and #1 condensate water fore pump outlet electric valve 22.#2 condensate water fore pump branch road 55 is provided with #2 condensate water fore pump entrance motor-driven valve 23, #2 condensate water fore pump inlet screen 24, #2 condensate water fore pump 25, #2 condensate water fore pump outlet non-return door 26 and #2 condensate water fore pump outlet electric valve 27.Condensate water fore pump recirculating line 60 is also provided with flow-through orifice 77.

Described condensate water fore pump recirculation main road 52 is provided with condensate water fore pump recirculation main road and adjusts valve 16 and condensate water fore pump recirculation main road motor-driven valve 17, described condensate water fore pump recirculation bypass 53 is provided with condensate water fore pump recirculation bypass motor-driven valve 15.

After described #1 condensate pump branch road 56 is in parallel with #2 condensate pump branch road 57, one end connects on described condensate water fore pump recirculating line 60, the other end connects one end of described condensate return piping 61, described deironing filter is arranged on described condensate return piping 61, one end of condensate water recirculation main road 58 described in the other end of described condensate return piping 61, the other end of described condensate water recirculation main road 58 connects described condenser; The two ends of described condensate water recirculation bypass 59 connect the two ends of described condensate water recirculation main road 58 respectively.It should be noted that described condensate water recirculation main road 58 can as a part for described condensate return piping 61.

Described #1 condensate pump branch road 56 is provided with #1 condensate pump entrance motor-driven valve 28, #1 condensate pump 29, #1 condensate pump outlet non-return door 30 and #1 condensate pump outlet electric valve 31; Described #2 condensate pump branch road 57 is provided with #2 condensate pump entrance motor-driven valve 32, #2 condensate pump 33, #2 condensate pump outlet non-return door 34 and #2 condensate pump outlet electric valve 35.

Described condensate water recirculation main road 58 is provided with condensate water recirculation main road motor-driven valve 36 and condensate water recirculation main road adjusts valve 37, and described condensate water recirculation bypass 59 is provided with condensate water recirculation bypass motor-driven valve 38.In addition, described condensate water recirculation main road 58 is also provided with flow-through orifice 75.

The tie point A that described condensate return piping 61 and described condensate water recycle main road 58 is connected the total door 41 of the miscellaneous user of a condensate water, after water reduces iron ion content in described condensate return piping 61, flow to each miscellaneous user by the total door of the miscellaneous user of this condensate water 41.In addition, flow-through orifice 76 is also provided with between tie point A and deironing filter.

In one embodiment, the total door 41 of the miscellaneous user of this condensate water is connected to three grades of desuperheating water main roads 62 and three grades of desuperheating water bypasses 63, three grades of desuperheating water main roads 62 connect three grades of desuperheating water main road motor-driven valves 2 and three grades of desuperheating water main roads adjust valve 3, three grades of desuperheating water bypasses 63 to be provided with three grades of desuperheating water bypass motor-driven valves 1.

In one embodiment; the total door 41 of the miscellaneous user of this condensate water is connected to water curtain protection main road 64 and water curtain protection bypass 65; water curtain protection main road 64 is provided with water curtain protection main road motor-driven valve 5 and water curtain protection main road adjusts valve 6, and water curtain protection bypass 65 is provided with water curtain protection bypass motor-driven valve 4.

In one embodiment, the total door 41 of the miscellaneous user of this condensate water is connected to boiler side hydrophobic development unit desuperheating water main road 66 and boiler side hydrophobic development unit desuperheating water bypass 67, boiler side hydrophobic development unit desuperheating water main road 66 is provided with boiler side hydrophobic development unit desuperheating water main road motor-driven valve 8 and boiler side hydrophobic development unit desuperheating water main road control valve 9, boiler side hydrophobic development unit desuperheating water bypass 67 is provided with boiler side hydrophobic development unit desuperheating water bypass motor-driven valve 7.

In one embodiment, the total door 41 of the miscellaneous user of this condensate water is connected to motor side hydrophobic development unit desuperheating water main road 72 and motor side hydrophobic development unit desuperheating water bypass 73, motor side hydrophobic development unit desuperheating water main road 72 is arranged motor side hydrophobic development unit desuperheating water main road motor-driven valve 11 and motor side hydrophobic development unit desuperheating water main road control valve 12, motor side hydrophobic development unit desuperheating water bypass 73 is provided with motor side hydrophobic development unit desuperheating water bypass motor-driven valve 10.

In one embodiment, the total door 41 of the miscellaneous user of this condensate water is connected to low pressure shaft seal desuperheating water main road 68 and low pressure shaft seal desuperheating water bypass 69, low pressure shaft seal desuperheating water main road 68 is provided with low pressure shaft seal desuperheating water main road motor-driven valve 42 and low pressure shaft seal desuperheating water main road tune valve 43, low pressure shaft seal desuperheating water bypass 69 is provided with low pressure shaft seal desuperheating water bypass motor-driven valve 44.

In one embodiment, the total door 41 of the miscellaneous user of this condensate water is connected to low pressure (LP) cylinder desuperheating water main road 70 and low pressure (LP) cylinder desuperheating water bypass 71, low pressure (LP) cylinder desuperheating water main road 70 is provided with low pressure (LP) cylinder desuperheating water main road motor-driven valve 45 and low pressure (LP) cylinder desuperheating water main road tune valve 46, low pressure (LP) cylinder desuperheating water bypass 71 is provided with low pressure (LP) cylinder desuperheating water bypass motor-driven valve 47.

In one embodiment, the total door of the miscellaneous user of this condensate water 41 is connected to low other desuperheating water motor-driven valve 48 and low other desuperheating water adjusts valve 49.

In one embodiment, the total door of the miscellaneous user of this condensate water 41 is connected to middle other desuperheating water motor-driven valve 50 and middle other desuperheating water adjusts valve 51.

In one embodiment, condenser is also connected to condenser water replenishing bypass and adjusts valve 13 and condenser water replenishing main road motor-driven valve 14, adjusts valve 13 and condenser water replenishing main road motor-driven valve 14 can provide moisturizing for condenser by condenser water replenishing bypass.

In addition, the tie point A that described condensate return piping 61 and described condensate water recycles main road 58 is also connected to condensate water and starts discharge pipe line 74 and #3 low-pressure coal saver, and condensate water starts discharge pipe line 74 and is provided with condensate water startup draining motor-driven valve 39 and condensate water startup draining motor-driven valve 40.

Gas power station one-to-one unit condensate system of the present invention also comprises: condensate system programed logic action button a1, the preferred button a2 of condensate water fore pump, energy saver mode select button a3 and the preferred button a4 of condensate pump.In addition, every platform condensate water fore pump is other is provided with respective frequency conversion select button button standby with interlocking throwing, and every platform condensate pump is other is provided with the respective standby button of interlocking throwing.

Condensate water fore pump (#1 condensate water fore pump 20 and #2 condensate water fore pump 25) effect is the saturated condensate water under suction is in high vacuum state, provides pressure head and flow to condensate pump for condensate water.The effect of condensate pump (#1 condensate pump 29 and #2 condensate pump 33) improves condensate water pressure, condensate water supplied furnace side low-pressure drum and each miscellaneous user.Condenser effect is set up at turbine discharge mouth and keeps high vacuum, and the steam discharge of steam turbine is condensed into water, reclaims clean condensate water and the hydrophobic feedwater as boiler; Another condenser also has certain deaeration in condenser function.The effect of gland heater utilizes shaft seal back-steam to heat the condensate water flowing through gland heater.Ferric oxide particles in condensate water and colloid are removed in the effect of deironing filter, improve condensate water water quality.

Known based on foregoing description, gas power station one-to-one unit condensate system has two-way to recycle, one is the recirculation of condensate water fore pump, the condensate water driven by condensate water fore pump, while major part is supplied to condensate pump, sub-fraction walks condensate water fore pump recirculating line, and main purpose ensures that condensate water fore pump flow is not less than cavitation erosion flow; Another is condensate water recirculation, and main purpose ensures that condensate pump flow is not less than cavitation erosion flow.Condensate water is aspirated from condenser by condensate water fore pump, condensate pump is supplied to after gland heater is heated, driven by condensate pump, reduce major part after iron ion content through deironing filter and flow to boiler low-pressure drum, fraction supplies each miscellaneous user again.

The embodiment of the present invention provides a kind of start and stop method, and be applied to the gas power station one-to-one unit condensate system shown in Fig. 1, this start and stop method comprises the setting up procedure of gas power station one-to-one unit condensate system, and as shown in Figure 2, this setting up procedure comprises:

S201: the feedback of status receiving condensate water fore pump and condensate pump, judges the state of condensate water fore pump and condensate pump, if run without condensate water fore pump, carries out S202; If arbitrary condensate water fore pump (comprising #1 condensate water fore pump 20 and #2 condensate water fore pump 25) runs and condensate pump (comprising #1 condensate pump 29 and #2 condensate pump 33) full cut-off, carry out S216; If arbitrary condensate pump runs, then carry out S226.

S202: judge whether one-to-one unit condensate system adjustment doors has closed and be switched to manual mode.This one-to-one unit condensate system adjustment doors comprises: condensate water fore pump recirculation adjustment doors (condensate water fore pump recirculation main road adjusts valve 16), condensate water recirculation electric adjustable section door (condensate water recirculation main road adjusts valve 37), boiler side condenser hydrophobic development unit water spray adjustment doors (boiler side hydrophobic development unit desuperheating water main road control valve 9), motor side condenser hydrophobic development unit water spray adjustment doors (hydrophobic development unit desuperheating water main road control valve 12), three grades of pneumatic adjustment doors of desuperheating water (three grades of desuperheating water main roads adjust valve 3), water curtain protection water spray electric adjustable section door (water curtain protection main road adjusts valve 6), the pneumatic adjustment doors of low pressure cylinder spray (low pressure (LP) cylinder desuperheating water main road adjusts valve 46), low pressure shaft seal temperature water spray adjustment doors (low pressure shaft seal desuperheating water main road adjusts valve 43), whether low voltage bypass steam temperature reducing water control valve (low other desuperheating water adjusts valve 49) and middle other steam temperature reducing water control valve (middle other desuperheating water adjusts valve 51) have closed and have been switched to manual mode.

If one-to-one unit condensate system adjustment doors has all been closed and has been switched to manual mode, carry out S204; If not, carry out S203, send and close one-to-one unit condensate system adjustment doors and the instruction being switched to manual mode.

S204: judge whether one-to-one unit condensate system Electrically operated gate closes.

One-to-one unit condensate system Electrically operated gate comprises: condensate water fore pump motorized recycling valve (condensate water fore pump recirculation main road motor-driven valve 17), condensate water motorized recycling valve (condensate water recirculation main road motor-driven valve 36), condensate water fore pump recirculation bypass Electrically operated gate (condensate water fore pump recirculation bypass motor-driven valve 15), condensate water recirculation bypass Electrically operated gate (condensate water recirculation bypass motor-driven valve 38), boiler side condenser hydrophobic development unit water spray Electrically operated gate (boiler side hydrophobic development unit desuperheating water main road motor-driven valve 8), boiler side condenser hydrophobic development unit spray desuperheating bypass Electrically operated gate (boiler side hydrophobic development unit desuperheating water bypass motor-driven valve 7), Electrically operated gate (motor side hydrophobic development unit desuperheating water main road motor-driven valve 11) before motor side condenser hydrophobic development unit water spray adjustment doors, motor side condenser hydrophobic development unit spray desuperheating bypass Electrically operated gate (motor side hydrophobic development unit desuperheating water bypass motor-driven valve 10), three grades of desuperheating water pneumatic electro doors (three grades of desuperheating water main road motor-driven valves 2), three grades of desuperheating water bypass Electrically operated gate (three grades of desuperheating water bypass motor-driven valves 1), water curtain protection water spray Electrically operated gate (water curtain protection main road motor-driven valve 5), water curtain protection water spray bypass Electrically operated gate (water curtain protection bypass motor-driven valve 4), condenser water replenishing bypass Electrically operated gate (valve 13 is adjusted in condenser water replenishing bypass), condensate water starts draining motor-driven valve 39, condensate water starts draining motor-driven valve 40, the total door 41 of the miscellaneous user of condensate water, female pipe attemperator desuperheating water Electrically operated gate (low pressure shaft seal desuperheating water main road motor-driven valve 42) of shaft seal, female pipe attemperator desuperheating water bypass Electrically operated gate (low pressure shaft seal desuperheating water bypass motor-driven valve 44) of shaft seal, low voltage bypass steam temperature reducing water cuts off Electrically operated gate (low other desuperheating water motor-driven valve 48), intermediate pressure by-pass steam temperature reducing water cuts off Electrically operated gate (middle other desuperheating water motor-driven valve 50), low pressure cylinder spray Electrically operated gate (low pressure (LP) cylinder desuperheating water main road motor-driven valve 45) and low pressure cylinder spray desuperheat bypass Electrically operated gate (47).

If one-to-one unit condensate system Electrically operated gate is closed all, carry out S206, otherwise carry out S205, send the instruction of closing one-to-one unit condensate system Electrically operated gate.

S206: judge that two condensate water prepositionly pump into, export Electrically operated gate (#1 condensate water fore pump entrance motor-driven valve 18, #1 condensate water fore pump outlet electric valve 22, #2 condensate water fore pump entrance motor-driven valve 23 and #2 condensate water fore pump outlet electric valve 27) and two condensate water pump into, export Electrically operated gate (#1 condensate pump entrance motor-driven valve 28, #1 condensate pump outlet electric valve 31, #2 condensate pump entrance motor-driven valve 32 and #2 condensate pump outlet electric valve 35) and whether open; If so, S208 is carried out, otherwise, carry out S207, send out two condensate water and prepositionly to pump into, export the instruction that Electrically operated gate and two condensate water pumped into, exported Electrically operated gate.

S208: judge that condenser water replenishing bypass adjusts valve 13 whether to throw automatically, if so, carry out S210; Otherwise, carry out S209, send and adjust valve 13 to throw automatic instruction condenser water replenishing bypass.

S210: judge that condensate water recirculation main road motor-driven valve 36 and condensate water recirculation main road adjust valve 37 whether to open, and whether the condensate water fore pump outlet electric valve of preliminary election closes, if condensate water recirculation main road motor-driven valve and condensate water recirculation main road adjust valve all to open, and the condensate water fore pump outlet electric valve of preliminary election closes all, carries out S212; Otherwise, carry out S211, send out condensate water recirculation main road motor-driven valve 36 and condensate water recirculation main road tune valve 37, and close the instruction of the condensate water fore pump outlet electric valve of preliminary election.

S212: judge whether the condensate water fore pump of preliminary election runs, if the condensate water fore pump of preliminary election runs, carry out S214; Otherwise, carry out S213, send the instruction of the condensate water fore pump running preliminary election.

S214: judge whether the condensate water fore pump outlet electric valve of preliminary election is opened, if the condensate water fore pump outlet electric valve of preliminary election is opened, carry out S216; Otherwise, carry out S215, send out the instruction of the condensate water fore pump outlet electric valve of preliminary election.

S216: judge whether preliminary election condensate water fore pump frequency converter has been thrown automatically and whether pressure is greater than the first predetermined pressure (the first predetermined pressure such as can get 0.38MPa), or whether arbitrary condensate water fore pump power frequency runs and whether condensate water fore pump outlet main-piping pressure is greater than described first predetermined pressure; If preliminary election condensate water fore pump frequency converter has thrown automatically and whether pressure is greater than the first predetermined pressure, or arbitrary condensate water fore pump power frequency operation and condensate water fore pump outlet main-piping pressure is greater than described first predetermined pressure, carry out S218; Otherwise carry out S217, send and throw preliminary election condensate water fore pump frequency converter automatically, condensate water fore pump outlet main-piping pressure setting value rises to the instruction of target pressure value (0.4MPa) with set rate (0.02MPa/s).The input of preliminary election condensate water fore pump frequency converter and the operation of condensate water fore pump power frequency are to realize by frequency conversion select button.

S218: judge whether condensate water fore pump interlocking has dropped into and whether waited for the scheduled time (this scheduled time can be such as 60S), if condensate water fore pump interlocking has dropped into and waited for the scheduled time, carries out S220; Otherwise, carry out S219, send the instruction of throwing condensate water fore pump interlocking.

S220: judge whether preliminary election condensate pump outlet electric valve closes, and whether condensate pump import main-piping pressure is greater than the second predetermined pressure (the second predetermined pressure such as can get 0.25MPa), and whether energy saver mode does not drop into; If preliminary election condensate pump outlet electric valve closes, and condensate pump import main-piping pressure is greater than the second predetermined pressure, and energy saver mode does not drop into, and carries out S222; Otherwise, carry out S221, send the instruction of closing preliminary election condensate pump outlet electric valve.If energy saver mode drops into, setting up procedure terminates.

S222: judge whether the condensate pump of preliminary election runs; If the condensate pump of preliminary election runs, carry out S224; If not, carry out S223, send the instruction of the condensate pump starting preliminary election, to start the condensate pump of preliminary election.

S224: judge whether the condensate pump outlet electric valve of preliminary election is opened; If the condensate pump outlet electric valve of preliminary election leaves, carry out S226; Otherwise carry out S225, send the instruction of the condensate pump outlet electric valve opening preliminary election, to open the condensate pump outlet electric valve of preliminary election.

S226: judge #1 condensate pump or #2 condensate pump whether converting operation and frequency conversion has been thrown automatically and solidifying pump discharge main-piping pressure is greater than the second predetermined pressure (2.5MPa); Or #1 condensate pump or #2 condensate pump whether power frequency operation and pump discharge main-piping pressure is greater than described second predetermined pressure.

If #1 condensate pump or #2 Condensate Pump Frequency Conversion run and frequency conversion has been thrown automatically and solidifying pump discharge main-piping pressure is greater than described second predetermined pressure; Or #1 condensate pump or #2 condensate pump power frequency operation and pump discharge main-piping pressure is greater than described second predetermined pressure, carry out S228; If #1 condensate pump or #2 Condensate Pump Frequency Conversion run, but solidifying pump discharge main-piping pressure is not more than described second predetermined pressure, carry out S227, send and throw the automatic instruction of frequency converter, pump discharge main-piping pressure is risen to scheduled pressure value (3MPa) with the speed of set rate (0.2MPa/s).

S228: judge whether condensate pump interlocking has dropped into and condensate water fore pump recirculation main road adjusts valve to throw automatically; If condensate pump interlocking does not drop into or condensate water fore pump recirculation main road adjusts valve not throw automatically, or condensate pump interlocking does not drop into and condensate water fore pump recirculation main road adjusts valve not throw automatically, carry out S229, send to throw condensate pump interlocking and throw condensate water fore pump recirculation main road and adjust the automatic instruction of valve.

The enabled condition that this setting up procedure starts is: arbitrary demineralized water pump operation is normal and main-piping pressure is greater than 0.2Mpa, and condenser liquid level is greater than 400mm, and arbitrary enclosed cooling water pump runs and main-piping pressure is greater than 0.45Mpa.After meeting these conditions, the setting up procedure (programme-control enable logic) of gas power station one-to-one unit condensate system can carry out.

By the setting up procedure shown in Fig. 2, achieve the automatic startup of this gas power station condensate system under system full cut-off state.

In one embodiment, this start and stop method comprises the setting up procedure of gas power station one-to-one unit condensate system, and as shown in Figure 3, this setting up procedure comprises:

S301: judge whether two condensate water fore pumps and two condensate pumps interlocking have exited and condensate water recirculation main road adjusts valve to be automatically switched to manually; If two condensate water fore pumps and two condensate pumps interlocking have exited and condensate water recirculation main road adjusts valve to be automatically switched to manually, carry out S303; Otherwise, carry out S302, send excision two condensate water fore pumps and two condensate pumps interlocking, and condensate water is recycled main road and adjust valve to be switched to manual instruction.

S303: judge whether two condensate water fore pumps and two condensate pumps all stop; If two condensate water fore pumps and two condensate pumps all stop, carrying out S305; Otherwise, carry out S304, send the instruction of stopping two condensate water fore pumps and two condensate pumps.

S305: judge whether two condensate water fore pump outlet electric valve and two condensate pump outlet electric valve close; If two condensate water fore pump outlet electric valve and two condensate pump outlet electric valve are closed, carry out S307; Otherwise, carry out S306, send the instruction of closedown two condensate water fore pump outlet electric valve and two condensate pump outlet electric valve.

S307: judge condenser water replenishing bypass adjust valve whether to close and be switched to manually and condenser water replenishing main road motor-driven valve close; If condenser water replenishing bypass adjust valve to close and be switched to manually and condenser water replenishing main road motor-driven valve close, terminate to stop step; Otherwise, carry out S308, send and close condenser water replenishing bypass tune valve and be switched to manually, and close the instruction of condenser water replenishing main road motor-driven valve.

The service condition of this stopping step is: gland seal system is stopped transport (namely cold close to shaft seal steam Electrically operated gate, auxiliary steam closes to shaft seal steam Electrically operated gate and bypass door) and vacuum system stoppage in transit (namely two water ring vacuum pumps all stop) again.After meeting these conditions, the stopping step (programme-control stopping logic) of gas power station one-to-one unit condensate system can be carried out.

By the stopping step shown in Fig. 3, achieve the automatic stopping under operation of this gas power station condensate system.

Start and stop method of the present invention, with regard to three kinds of system modes in S201: the first system mode is without pump operation, then skips to S202 until complete all startup work; The second system mode be when have arbitrary condensate water fore pump run and runs without condensate pump time, start walk sequence skip to S216 until complete all startup work.The third system mode is when there being arbitrary condensate pump to run, then skip to S226 step until complete all startup work.This avoid the original running status of interference condensate system, it also avoid the repeated priming work of condensate water fore pump and condensate pump.

The energy saver mode select button a3 of gas power station one-to-one unit condensate system of the present invention can realize energy saver mode and whether select, the difference whether energy saver mode is selected is embodied in S220, when energy saver mode is non-selected, then continue S222 to carry out opening the step of condensate pump until setting up procedure completes, under this situation, drive condensate water to be supplied to each user by the condensate pump run; When energy saver mode is selected, this setting up procedure terminates, and drives condensate water to be supplied to each user under this situation by condensate water fore pump.

Condensate water fore pump preferably (preliminary election) button of gas power station one-to-one unit condensate system of the present invention, comprises preliminary election #1 condensate water fore pump and preliminary election #2 condensate water fore pump.The effect of this selection is embodied in the S210 of setting up procedure first, and the instruction of this step for closing preliminary election condensate water fore pump outlet Electrically operated gate, and starts preliminary election pump at S212.

Condensate pump preferably (preliminary election) button of gas power station one-to-one unit condensate system of the present invention, by clicking the condensate pump preliminary election button on condensate system picture, comprise preliminary election No. 1 general pump, preliminary election No. 1 variable frequency pump, preliminary election No. 2 variable frequency pumps and preliminary election No. 2 general pumps.This selection is embodied in the S220 of setting up procedure first, and the instruction of this step for closing preliminary election condensate pump outlet Electrically operated gate, and starts preliminary election pump at S222.Another layer of meaning of this selection is the work, the converting operation mode that have selected condensate pump.

The start and stop step (programed logic) of gas power station of the present invention " one-to-one " unit condensate system proceeds to a certain step, and 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 receive this feedback signal, continues performing a programme control logic.

The programed logic setting up procedure of gas power station of the present invention " one-to-one " unit condensate system can drop into condensate water fore pump and condensate pump interlocking automatically, and this is embodied in S218 and S228 starting step sequence respectively.After condensate water fore pump interlocking drops into, when having the operation of condensate water fore pump and condensate water fore pump exports main-piping pressure lower than certain definite value; Or when having arbitrary condensate water fore pump to trip, all can another condensate water fore pump of interlocked startup, thus ensure that condensate water fore pump outlet main-piping pressure is normal.After condensate pump interlocking drops into, when having condensate pump operation and condensate pump exports main-piping pressure lower than certain definite value; Or when having arbitrary condensate pump to trip, all can another condensate pump of interlocked startup, thus ensure that condensate pump outlet main-piping pressure is normal.

The start and stop method of gas power station of the present invention " one-to-one " unit condensate system can realize following effect: the first, under gas power station " one-to-one " unit condensate system full cut-off state, realize the automatic startup of condensate system; And under operation, realize the automatic stopping of condensate system.The second, under the state of gas power station " one-to-one " unit condensate system part startup, realize the automatic startup of condensate system, and do not disturb original running status.Three, when gas power station " one-to-one " unit starting program moves to a certain step, condition does not meet, if artificially judge that this condition can be ignored, manually can carry out the operation that leapfrog action continues start-up routine, until condensate system starts complete.Four, the energy saver mode realizing gas power station " one-to-one " unit condensate system is selected.When selection energy saver mode, this program control enable logic only starts condensate water fore pump, does not start condensate pump, drives condensate water to be supplied to each user, thus realize energy-conservation object by condensate water fore pump.

Those skilled in the art should understand, 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, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.

The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, equipment (system) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.

These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame 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 is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.

Apply specific embodiment in the present invention to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims

1. a gas power station one-to-one unit condensate system, it is characterized in that, described gas power station one-to-one unit condensate system comprises: condensate water fore pump recirculation main road, condensate water fore pump recirculation bypass, first condensate water fore pump branch road, second condensate water fore pump branch road, first condensate pump branch road, second condensate pump branch road, condensate water recirculation main road, condensate water recirculation bypass, condensate water fore pump recirculating line, condensate return piping, first condensate water fore pump, second condensate water fore pump, first condensate pump, second condensate pump, condenser, gland heater and deironing filter,

2. gas power station one-to-one unit condensate system according to claim 1, it is characterized in that, the total door of the miscellaneous user of described condensate water is connected to three grades of desuperheating water main roads and three grades of desuperheating water bypasses, three grades of desuperheating water main roads are provided with three grades of desuperheating water main road motor-driven valves and three grades of desuperheating water main roads tune valves, and three grades of desuperheating water bypasses are provided with three grades of desuperheating water bypass motor-driven valves.

3. gas power station one-to-one unit condensate system according to claim 1; it is characterized in that; the total door of the miscellaneous user of described condensate water is connected to water curtain protection main road and water curtain protection bypass; described water curtain protection main road is provided with water curtain protection main road motor-driven valve and water curtain protection main road adjusts valve, and described water curtain protection bypass is provided with water curtain protection bypass motor-driven valve.

4. gas power station one-to-one unit condensate system according to claim 1, it is characterized in that, the total door of the miscellaneous user of described condensate water is connected to boiler side hydrophobic development unit desuperheating water main road and the bypass of boiler side hydrophobic development unit desuperheating water, described boiler side hydrophobic development unit desuperheating water main road is provided with boiler side hydrophobic development unit desuperheating water main road motor-driven valve and boiler side hydrophobic development unit desuperheating water main road control valve, the bypass of boiler side hydrophobic development unit desuperheating water is provided with boiler side hydrophobic development unit desuperheating water bypass motor-driven valve.

5. gas power station one-to-one unit condensate system according to claim 1, it is characterized in that, the total door of the miscellaneous user of described condensate water is connected to motor side hydrophobic development unit desuperheating water main road and the bypass of motor side hydrophobic development unit desuperheating water, described motor side hydrophobic development unit desuperheating water main road is arranged motor side hydrophobic development unit desuperheating water main road motor-driven valve and motor side hydrophobic development unit desuperheating water main road control valve, the bypass of described motor side hydrophobic development unit desuperheating water is provided with motor side hydrophobic development unit desuperheating water bypass motor-driven valve.

6. gas power station one-to-one unit condensate system according to claim 1, it is characterized in that, the total door of the miscellaneous user of described condensate water is connected to low pressure shaft seal desuperheating water main road and the bypass of low pressure shaft seal desuperheating water, described low pressure shaft seal desuperheating water main road is provided with low pressure shaft seal desuperheating water main road motor-driven valve and low pressure shaft seal desuperheating water main road tune valve, the bypass of described low pressure shaft seal desuperheating water is provided with low pressure shaft seal desuperheating water bypass motor-driven valve.

7. gas power station one-to-one unit condensate system according to claim 1, it is characterized in that, the total door of the miscellaneous user of described condensate water is connected to low pressure (LP) cylinder desuperheating water main road and the bypass of low pressure (LP) cylinder desuperheating water, described low pressure (LP) cylinder desuperheating water main road is provided with low pressure (LP) cylinder desuperheating water main road motor-driven valve and low pressure (LP) cylinder desuperheating water main road tune valve, the bypass of described low pressure (LP) cylinder desuperheating water is provided with low pressure (LP) cylinder desuperheating water bypass motor-driven valve.

8. gas power station one-to-one unit condensate system according to claim 1, is characterized in that, the total door of the miscellaneous user of described condensate water is connected to low other desuperheating water motor-driven valve and low other desuperheating water adjusts valve.

9. gas power station one-to-one unit condensate system according to claim 1, is characterized in that, the total door of the miscellaneous user of described condensate water is connected to middle other desuperheating water motor-driven valve and middle other desuperheating water adjusts valve.

10. gas power station one-to-one unit condensate system according to claim 1, is characterized in that, described condenser is also connected to condenser water replenishing bypass and adjusts valve and condenser water replenishing main road motor-driven valve.

11. gas power station one-to-one unit condensate systems according to claim 1, it is characterized in that, described gas power station one-to-one unit condensate system also comprises: condensate system programed logic action button, the preferred button of condensate water fore pump, the preferred button of energy saver mode select button, condensate pump.

12. 1 kinds of start and stop methods, be applied to the gas power station one-to-one unit condensate system described in claim 1-11, it is characterized in that, described start and stop method comprises setting up procedure, and described setting up procedure comprises:

13. start and stop methods according to claim 12, it is characterized in that, described start and stop method also comprises stopping step, described stopping step comprising:

14. start and stop methods according to claim 12, it is characterized in that, the enabled condition that described setting up procedure starts is: arbitrary demineralized water pump operation is normal and main-piping pressure is greater than 0.2Mpa, and condenser liquid level is greater than 400mm, and arbitrary enclosed cooling water pump run and main-piping pressure is greater than 0.45Mpa.

15. start and stop methods according to claim 13, is characterized in that, the service condition of described stopping step is: gland seal system is stopped transport and vacuum system is stopped transport.

16. start and stop methods according to claim 12, it is characterized in that, when judging the state of condensate water fore pump and condensate pump, if arbitrary condensate water fore pump runs and condensate pump full cut-off, judge whether preliminary election condensate water fore pump frequency converter has been thrown automatically and whether pressure is greater than the first predetermined pressure, or arbitrary condensate water fore pump power frequency whether runs and whether condensate water fore pump outlet main-piping pressure is greater than described first predetermined pressure.

17. start and stop methods according to claim 12, it is characterized in that, when judging the state of condensate water fore pump and condensate pump, if arbitrary condensate pump runs, judge the first condensate pump or the second condensate pump whether converting operation and frequency conversion has been thrown automatically and solidifying pump discharge main-piping pressure is greater than described second predetermined pressure; Or the first condensate pump or the second condensate pump whether power frequency operation and pump discharge main-piping pressure is greater than described second predetermined pressure.