CN104654267B - Gas power station two drags a unit steam vapour system and on off control method thereof - Google Patents
Gas power station two drags a unit steam vapour system and on off control method thereof Download PDFInfo
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- CN104654267B CN104654267B CN201510081291.6A CN201510081291A CN104654267B CN 104654267 B CN104654267 B CN 104654267B CN 201510081291 A CN201510081291 A CN 201510081291A CN 104654267 B CN104654267 B CN 104654267B
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- 238000000034 method Methods 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 230000005520 electrodynamics Effects 0.000 claims abstract description 14
- 239000002918 waste heat Substances 0.000 claims description 38
- 239000007789 gas Substances 0.000 claims description 22
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 description 12
- 238000010586 diagram Methods 0.000 description 8
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- 238000004590 computer program Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 2
- 239000000567 combustion gas Substances 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
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Abstract
A kind of gas power station two drags a unit steam vapour system and on off control method thereof, and this gas power station two drags a unit steam vapour system to include: the first steam vapour system, the second steam vapour system and turbine low pressure cylinder；First steam vapour system includes: the first low-pressure steam pipeline, the first low-pressure steam vapour Electrically operated gate, the first low-pressure steam vapour bypass Electrically operated gate, the first low voltage bypass control valve, the first low other desuperheating water pipeline, the first low other desuperheating water adjust valve and the first low other desuperheating water electrodynamic valve；Second steam vapour system includes: the second low-pressure steam pipeline, the second low-pressure steam vapour Electrically operated gate, the second low-pressure steam vapour bypass Electrically operated gate, the second low voltage bypass control valve, the second low other desuperheating water pipeline, the second low other desuperheating water adjust valve and the second low other desuperheating water electrodynamic valve.The present invention can exit in this side steam vapour system and realize under state automatically engaging；Under input state, it is achieved automatically exiting from or automatic and vapour of this side steam vapour system.
Description
Technical field
The present invention is about gas power station low-pressure steam technology, drags a unit especially with regard to a kind of gas power station two
Steam vapour system and on off control method thereof.
Background technology
The major function of gas power station steam vapour system is that conducting waste heat boiler low-pressure drum carrys out vapour and goes steam turbine low
Cylinder pressure acting, but existing gas power station steam vapour system cannot play pressure release low when steam turbine is tripped
The effect of pressure steam.Uncontrollable low-pressure steam is when steam turbine load is specified less than 30%, by low voltage bypass pressure
Control pressure regulating valve, enter condenser；And uncontrollable when steam turbine load is specified higher than 30%, enter vapour
Turbine low pressure (LP) cylinder does work.It addition, existing gas power station steam vapour system cannot be moved back in this side steam vapour system
Do well down, it is achieved automatically engaging of this side steam vapour system；Cannot be under input state, it is achieved this side low pressure is steamed
Automatically exiting from of vapour system；And cannot be under opposite side steam vapour system input state, it is achieved this side low-pressure steam
The most also vapour of system.
Summary of the invention
Embodiments provide a kind of gas power station two and drag unit steam vapour system and an on off control side thereof
Method, to exit under state in this side steam vapour system, it is achieved automatically engaging of this side steam vapour system；Put into
Under state, it is achieved automatically exiting from of this side steam vapour system；Under opposite side steam vapour system input state, real
The most also vapour of this side steam vapour system existing.
To achieve these goals, embodiments provide a kind of gas power station two and drag a unit low-pressure steam system
System, described gas power station two drags a unit steam vapour system to include: the first steam vapour system, the second low pressure
Vapour system and turbine low pressure cylinder；
First steam vapour system includes: the first low-pressure steam pipeline, the first low-pressure steam vapour Electrically operated gate, first low
Pressure steam vapour bypass Electrically operated gate, the first low voltage bypass control valve, the first low other desuperheating water pipeline, the first low other desuperheat
Water adjusts valve and the first low other desuperheating water electrodynamic valve；
Second steam vapour system includes: the second low-pressure steam pipeline, the second low-pressure steam vapour Electrically operated gate, second low
Pressure steam vapour bypass Electrically operated gate, the second low voltage bypass control valve, the second low other desuperheating water pipeline, the second low other desuperheat
Water adjusts valve and the second low other desuperheating water electrodynamic valve；
Described first low-pressure steam vapour Electrically operated gate are arranged on the first low-pressure steam pipeline, by the first low-pressure steam vapour
The two ends of road Electrically operated gate are connected to the first low-pressure steam the two ends of vapour Electrically operated gate；Described first low-pressure steam pipeline one end
Connecting turbine low pressure cylinder, the other end receives from the first waste heat boiler low-pressure steam；Described first low other desuperheat water pipe
The one end on road is connected to described first low-pressure steam vapour Electrically operated gate and first by described first low voltage bypass control valve
On described first low-pressure steam pipeline between waste heat boiler, the other end connects condensate system；
Described second low-pressure steam vapour Electrically operated gate are arranged on described second low-pressure steam pipeline, and described second low pressure is steamed
The two ends of vapour vapour bypass Electrically operated gate are connected to described second low-pressure steam the two ends of vapour Electrically operated gate；Described second low pressure
Jet chimney one end connects turbine low pressure cylinder, and the other end receives from the second waste heat boiler low-pressure steam；Described second
One end of low other desuperheating water pipeline is connected to described second low-pressure steam vapour by described second low voltage bypass control valve
On the second low-pressure steam pipeline between Electrically operated gate and the second waste heat boiler, the other end connects described condensate system.
In one embodiment, described gas power station two drags and is additionally provided with in a unit steam vapour system: first is low
Pressure vapour system programed logic operation button and the second steam vapour system programed logic operation button.
To achieve these goals, embodiments provide a kind of on off control method, be applied to above-mentioned combustion gas
Steam power plant two drags a unit steam vapour system, described on off control method to include:
Judge that the first steam vapour system has put into automatic position the most；
If the first steam vapour system has put into automatic position,
Judge whether that the second steam vapour system does not puts into and the second low-pressure steam vapour Electrically operated gate and the second low-pressure steam
And vapour bypass Electrically operated gate is turned off, or whether the second low-pressure steam vapour Electrically operated gate has been opened and the second waste heat boiler is in fortune
Whether OK, or the first low-pressure steam vapour Electrically operated gate are opened；
If the second steam vapour system does not puts into and the second low-pressure steam vapour Electrically operated gate and the second low-pressure steam vapour
Bypass Electrically operated gate is turned off, or the second low-pressure steam vapour Electrically operated gate have been opened and the second waste heat boiler is running, or first
Low-pressure steam vapour Electrically operated gate are opened, it may be judged whether at least meet one of three below condition:
A1: the second low pressure vapour Electrically operated gate have been opened and the second waste heat boiler runs；
First waste heat boiler has run and the absolute value of pressure difference value before and after the first low-pressure steam vapour Electrically operated gate is less than
The absolute value of the temperature gap before and after one predetermined pressure, and the first low-pressure steam vapour electrodynamic valve is less than a predetermined temperature；
First, second combustion engine load deviation is less than predetermined load；
A2: or the first low-pressure steam vapour Electrically operated gate open；
A3: or the second low-pressure steam vapour Electrically operated gate and the second low-pressure steam vapour bypass Electrically operated gate close.
If meeting one of condition A1, A2 and A3 or multiple, it is judged that the first low-pressure steam vapour bypass Electrically operated gate
The most open；If the first low-pressure steam vapour bypass Electrically operated gate are not opened, send out the first low-pressure steam vapour bypass electricity
The instruction of dynamic door；
If the first low-pressure steam vapour bypass Electrically operated gate are opened, it is judged that the first low-pressure steam vapour Electrically operated gate are the most
Open, if described first low-pressure steam vapour Electrically operated gate are not opened, send out the first low-pressure steam the instruction of vapour Electrically operated gate；
If the first low-pressure steam vapour Electrically operated gate are opened, it is judged that the first low-pressure steam vapour bypass Electrically operated gate are the most
Close；If the first low-pressure steam vapour bypass Electrically operated gate are not closed, send pass the first low-pressure steam and vapour bypasses Electrically operated gate
Instruction.
In one embodiment, described on off control method also includes:
Judge whether that the first waste heat boiler has moved back and time delay one scheduled time, or the first low lateral pressure control valve is automatically
Position；
If the first waste heat boiler has moved back and time delay one scheduled time, or the first low lateral pressure control valve is in automatic position, sentences
Disconnected whether the first low-pressure steam vapour Electrically operated gate has been closed and the first low-pressure steam vapour bypass Electrically operated gate are closed；If it does not,
Send and close the first low-pressure steam vapour Electrically operated gate and the first low-pressure steam the instruction of vapour bypass Electrically operated gate.
Having the beneficial effects that of the embodiment of the present invention, by the invention it is possible to exit state in this side steam vapour system
Under, it is achieved automatically engaging of this side steam vapour system；Under input state, it is achieved this side steam vapour system from
Move and exit；Under opposite side steam vapour system input state, it is achieved the most also vapour of this side steam vapour system.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only
It is some embodiments of the present invention, for those of ordinary skill in the art, in the premise not paying creative work
Under, it is also possible to other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the structural representation that the gas power station two of the embodiment of the present invention drags a unit steam vapour system；
Fig. 2 is the on off control method flow diagram of one embodiment of the invention；
Fig. 3 is the on off control method flow diagram of another embodiment of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.
Based on the embodiment in the present invention, those of ordinary skill in the art are obtained under not making creative work premise
Every other embodiment, broadly falls into the scope of protection of the invention.
The embodiment of the present invention provides a kind of gas power station two to drag a unit steam vapour system, as it is shown in figure 1, this combustion
Gas steam power plant two drags a unit steam vapour system to include: #1 steam vapour system, #2 steam vapour system and steamer
Machine low pressure (LP) cylinder 11, #1 steam vapour system is connected to turbine low pressure cylinder 11, #2 by #1 low-pressure steam pipeline 12
Steam vapour system is connected to turbine low pressure cylinder 11 by #2 low-pressure steam pipeline 13.
#1 steam vapour system includes: #1 low-pressure steam pipeline 12, #1 low-pressure steam vapour Electrically operated gate 4, #1 low pressure
Steam vapour bypass Electrically operated gate 5, low voltage bypass control valve 1, the low other desuperheating water pipeline 14 of Desuperheating device 15, #1,
The low other desuperheating water of #1 adjusts the low other desuperheating water electrodynamic valve 3 of valve 2 and #1.
#1 low-pressure steam pipeline 12 one end connects turbine low pressure cylinder 11, and the other end receives low from #1 waste heat boiler
Pressure steam；#1 low-pressure steam vapour Electrically operated gate 4 are arranged on #1 low-pressure steam pipeline 12, #1 low-pressure steam vapour
The two ends of bypass Electrically operated gate 5 are connected to #1 low-pressure steam the two ends of vapour Electrically operated gate 4；The low other desuperheating water pipeline 14 of #1
One end be connected to #1 low-pressure steam vapour Electrically operated gate 4 and #1 by Desuperheating device 15 and low voltage bypass control valve 1
On #1 low-pressure steam pipeline 12 between waste heat boiler, the other end connects condensate system.Low voltage bypass control valve 1
For reducing pressure, the effect of Desuperheating device 15 is desuperheat, and low voltage bypass control valve 1 and Desuperheating device 15 are whole as one
Body, referred to as reducing-and-cooling plant.It addition, Desuperheating device 15 is connected to condenser by condenser branch road 16.
The water of condensate system sequentially passes through the low other desuperheating water electrodynamic valve 3 of #1, #1 low other desuperheating water tune valve 2, desuperheat
Device 15 and low voltage bypass control valve 1 enter #1 low-pressure steam pipeline 12.
#2 steam vapour system includes: #2 low-pressure steam pipeline 13, #2 low-pressure steam vapour Electrically operated gate 9, #2 low pressure
Steam vapour bypass Electrically operated gate 10, low voltage bypass control valve 6, the low other desuperheating water pipeline 18 of Desuperheating device 17, #2,
The low other desuperheating water of #2 adjusts the low other desuperheating water electrodynamic valve 8 of valve 7 and #2.
#2 low-pressure steam pipeline 13 one end connects turbine low pressure cylinder 11, and the other end receives low from #2 waste heat boiler
Pressure steam；#2 low-pressure steam vapour Electrically operated gate 9 are arranged on #2 low-pressure steam pipeline 13, #2 low-pressure steam vapour
The two ends of bypass Electrically operated gate 10 are connected to #2 low-pressure steam the two ends of vapour Electrically operated gate 9；The low other desuperheating water pipeline of #2
One end of 18 is connected to #2 low-pressure steam vapour Electrically operated gate 9 and #2 by Desuperheating device 17 and low voltage bypass control valve 6
On #2 low-pressure steam pipeline 13 between waste heat boiler, the other end connects condensate system.Desuperheating device 17 passes through
Condenser branch road 19 is connected to condenser.
The water of condensate system sequentially passes through the low other desuperheating water electrodynamic valve 8 of #2, #2 low other desuperheating water tune valve 7, desuperheat
Device 17 and low voltage bypass control valve 6 enter #2 low-pressure steam pipeline 13.
The gas power station two of the present invention drags and is additionally provided with two manual operation button: #1 in a unit steam vapour system
Steam vapour system programed logic operation button a1 and #2 steam vapour system programed logic operation button
a2。
The gas power station two of the present invention drags a unit steam vapour system except by above-mentioned low-pressure steam pipeline, valve
Outward, relevant thermal technology's measuring point (such as the multiple pressure-measuring-points in figure and temperature point) is also included.Low-pressure steam pipeline (bag
Include #1 low-pressure steam pipeline 12 and #2 low-pressure steam pipeline 13) it is waste heat boiler low-pressure drum and turbine low pressure cylinder
Connecting pipe between 11, plays the effect of transport low-pressure steam.Low-pressure steam vapour Electrically operated gate (#1 low-pressure steam
And vapour Electrically operated gate 4 and #2 low-pressure steam vapour Electrically operated gate 9) effect be that isolation waste heat boiler low-pressure steam goes steam turbine
Low pressure (LP) cylinder.(#1 low-pressure steam vapour bypass Electrically operated gate 5 and #2 low-pressure steam are also for low-pressure steam vapour bypass Electrically operated gate
Vapour bypass Electrically operated gate 10) effect be balance and vapour Electrically operated gate before and after pressure reduction.Low voltage bypass Steam pressure control valve (#1
The high low lateral pressure control valve 6 of lateral pressure control valve 1 and #2) effect be regulation low pressure main steam line pressure, at vapour
Turbine low pressure (LP) cylinder controls low-pressure steam parameter, when steam turbine is tripped, this pressure control by this pressure-control valve before entering vapour
Valve processed can also play the effect of pressure release low-pressure steam.The overheated main steam of low-pressure drum is entered through low-pressure steam vapour Electrically operated gate
Entering turbine low pressure cylinder 11 to do work, low pressure (LP) cylinder steam discharge is directly entered condenser；Low-pressure steam is less than at steam turbine load
30% specified time, by low voltage bypass Stress control valve regulation pressure, enter condenser；At steam turbine load higher than 30%
Time specified, enter turbine low pressure cylinder acting.
The embodiment of the present invention provides a kind of on off control method, is applied to the gas power station two shown in Fig. 1 and drags a unit
Steam vapour system, this on off control method includes: start step, as in figure 2 it is shown, this startup step includes:
S201: judge that the first steam vapour system has put into automatic position the most；If the first steam vapour system puts into
Automatically position, enters S202.
S202: judge whether that the second steam vapour system does not puts into and the second low-pressure steam vapour Electrically operated gate and the second low pressure
Steam vapour bypass Electrically operated gate are turned off；Or whether the second low-pressure steam vapour Electrically operated gate has been opened and the second waste heat boiler exists
Run；Or the first low-pressure steam vapour Electrically operated gate are opened.If the second steam vapour system does not puts into and second low
Pressure steam vapour Electrically operated gate and the second low-pressure steam vapour bypass Electrically operated gate are turned off, or the second low-pressure steam and vapour electronic
Door has been opened and the second waste heat boiler is running, or the first low-pressure steam vapour Electrically operated gate are opened, carry out S203.
It should be noted that the first waste heat boiler is the Electrically operated gate being connected with the first steam vapour system, the second waste heat
Boiler is the Electrically operated gate being connected with the second steam vapour system.In description first, second is not intended to limit first
Rear order and actual numbering, the such as first steam vapour system is not #1 steam vapour system, it is also possible to represent the
Two low-pressure systems, i.e. first can be #1, it is possible to for #2.In the present embodiment, for convenience of explanation, represent with first
#1, second represents #2.
S203: judge whether at least to meet one of three below condition:
A1: the second low pressure vapour Electrically operated gate have been opened and the second waste heat boiler runs；
And first waste heat boiler run and the absolute value of pressure difference value before and after the first low-pressure steam vapour Electrically operated gate is little
In a predetermined pressure, and the absolute value of the temperature gap before and after the first low-pressure steam vapour electrodynamic valve is less than a pre-constant temperature
Degree；
And first, second combustion engine load deviation less than predetermined load；
A2: the first low-pressure steam vapour Electrically operated gate are opened；
A3: the second low-pressure steam vapour Electrically operated gate and the second low-pressure steam vapour bypass Electrically operated gate are closed.
In one embodiment, this predetermined pressure is 0.05MPa, and this predetermined temperature is 60 DEG C, and the present invention is not limited.
In one embodiment, this predetermined load is 20MW.
If meeting one of condition A1, tri-conditions of A2 with A3 or meeting multiple, carry out S204.
S204: judge that the first low-pressure steam vapour bypass Electrically operated gate are opened the most.If the first low-pressure steam vapour bypass
Electrically operated gate is opened, carries out S206；Otherwise, carry out S205, send out the first low-pressure steam and vapour bypasses Electrically operated gate
Instruction.
S206: judge that the first low-pressure steam vapour Electrically operated gate are opened the most.If the first low-pressure steam vapour Electrically operated gate are
Open, carry out S208；Otherwise, carry out S207, send out the first low-pressure steam the instruction of vapour Electrically operated gate.
S208: judge that the first low-pressure steam vapour bypass Electrically operated gate are closed the most.If the first low-pressure steam vapour bypass
Electrically operated gate is closed, starts step and terminates；Otherwise, carry out S209, send pass the first low-pressure steam and vapour bypass is electronic
The instruction of door.
In S202, it is judged that two drag a unit under three kinds of ruuning situation, can continue automatically engaging of steam vapour system
Logic: 1. the second steam vapour system (#2 steam vapour system) program control do not put into and the second low-pressure steam and vapour electronic
Door (#2 low-pressure steam vapour Electrically operated gate) closedown and the second low-pressure steam vapour bypass Electrically operated gate are closed；2. #2 low pressure is steamed
Vapour vapour Electrically operated gate have been opened and #2 waste heat boiler is running；3. #1 low-pressure steam vapour Electrically operated gate are opened.
In S203, when the second steam vapour system (#2 steam vapour system) under normal operation, continue the
One steam vapour system (#1 steam vapour system) and steam-operating need to meet following condition: 1. #2 low pressure main steam
And vapour Electrically operated gate has been opened and #2 waste heat boiler runs；And 2. #1 waste heat boiler has run and #1 low pressure main steam pressure
And before vapour electrodynamic valve with valve after pressure difference value absolute value less than 0.05MPa and #1 low pressure main steam temperature and vapour electricity
Before dynamic valve with valve after the absolute value of temperature gap less than 60 DEG C；And 3. #1, #2 combustion engine load deviation is less than 20MW.
S204 to S208 completes the also vapour process of side steam vapour system, the most first opens and vapour bypass Electrically operated gate, then
Open and vapour Electrically operated gate；Treat and vapour Electrically operated gate is opened, turn off and vapour bypass Electrically operated gate.
By the flow process shown in Fig. 2, it is possible to achieve this gas power station steam vapour system is under system exits state
Automatically engage.
The embodiment of the present invention also provides for a kind of on off control method, is applied to the gas power station two shown in Fig. 1 and drags a machine
Group steam vapour system, this on off control method includes: stop step, as it is shown on figure 3, this stopping step including:
S301: judge whether that the first waste heat boiler has moved back and time delay one scheduled time, or the first low lateral pressure control valve exists
Automatically position；If the first waste heat boiler has moved back and time delay one scheduled time, or the first low lateral pressure control valve is in automatic position,
Carry out S302.In one embodiment, this scheduled time is 30min, and the present invention is not limited.
S302: judge whether the first low-pressure steam vapour Electrically operated gate closed and the first low-pressure steam and vapour bypass Electrically operated gate
Close.If the first low-pressure steam vapour Electrically operated gate have been closed and the first low-pressure steam and vapour bypass Electrically operated gate close, stop step
Suddenly terminate.Otherwise, if the first low-pressure steam vapour Electrically operated gate are not closed, or the first low-pressure steam vapour bypass Electrically operated gate
Do not close, or the first low-pressure steam vapour Electrically operated gate and the first low-pressure steam vapour bypass Electrically operated gate are not all closed, and carry out
S303, sends and closes the first low-pressure steam vapour Electrically operated gate and the first low-pressure steam the instruction of vapour bypass Electrically operated gate.
The on off control method (on off control logic) of the present invention possesses protection exit function: when low-pressure steam occurring also
During two kinds of situations that vapour Electrically operated gate is closed or combustion engine trips, the most ongoing steam vapour system programed logic can be immediately
Exit.
When gas power station steam vapour system programed logic runs to a certain step, if condition is unsatisfactory for, single
Artificially judge that this condition can ignore that, can manually carry out leapfrog action and continue to control the operation of logic, until all steps
The most complete.
In S301, it is judged that in the case of below two kinds, just can exit #1 steam vapour system: 1. #1 waste heat boiler moves back
Go out to run, time delay 30min；Or 2. the low other steam control valve of #1 in automatic position.
On off control method shown in Fig. 3, it is achieved that this gas power station steam vapour system under input state from
Move and exit.
The gas power station two of the present invention drags the programed logic of a unit steam vapour system to proceed to a certain step, not
When receiving due feedback signal, programed logic can rest on this step, waits manual operation.Power plant operations staff
Can find current and run the step unreceived feedback signal of sequence, artificially judge whether unreceived feedback signal affects program
Control continuing executing with of logic.If this feedback signal does not affect present procedure controls proceeding of logic, operations staff
Leapfrog action can be operated and continue the execution of programed logic；If this feedback signal affects present procedure controls logic
Proceed, then operations staff can go investigation targetedly according to each the unsatisfied feedback signal found
Problem, until receiving this feedback signal, continues executing with programed logic.
By the invention it is possible to exit under state in this side steam vapour system, it is achieved this side steam vapour system from
Dynamic input；Under input state, it is achieved automatically exiting from of this side steam vapour system；In opposite side steam vapour system
Under input state, it is achieved the most also vapour of this side steam vapour system.
Those skilled in the art are it should be appreciated that embodiments of the invention can be provided as method, system or computer journey
Sequence product.Therefore, the present invention can use complete hardware embodiment, complete software implementation or combine software and hardware
The form of the embodiment of aspect.And, the present invention can use and wherein include computer available programs one or more
The computer-usable storage medium (including but not limited to disk memory, CD-ROM, optical memory etc.) of code
The form of the computer program of upper enforcement.
The present invention is with reference to method, equipment (system) and the stream of computer program according to embodiments of the present invention
Journey figure and/or block diagram describe.It should be understood that can be by computer program instructions flowchart and/or block diagram
Flow process in each flow process and/or square frame and flow chart and/or block diagram and/or the combination of square frame.These can be provided
Computer program instructions processes to general purpose computer, special-purpose computer, Embedded Processor or other programmable datas and sets
Standby processor is to produce a machine so that held by the processor of computer or other programmable data processing device
The instruction of row produces for realizing one flow process of flow chart or multiple flow process and/or one square frame of block diagram or multiple side
The device of the function specified in frame.
These computer program instructions may be alternatively stored in and computer or other programmable data processing device can be guided with spy
Determine in the computer-readable memory that mode works so that the instruction being stored in this computer-readable memory produces bag
Including the manufacture of command device, this command device realizes at one flow process of flow chart or multiple flow process and/or block diagram one
The function specified in individual square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device so that at meter
On calculation machine or other programmable devices, execution sequence of operations step is to produce computer implemented process, thus is calculating
The instruction performed on machine or other programmable devices provide for realizing in one flow process of flow chart or multiple flow process and/or
The step of the function specified in one square frame of block diagram or multiple square frame.
The present invention applies specific embodiment principle and the embodiment of the present invention are set forth, above example
Explanation be only intended to help to understand method and the core concept thereof of the present invention；General technology simultaneously for this area
Personnel, according to the thought of the present invention, the most all will change, in sum,
This specification content should not be construed as limitation of the present invention.
Claims (2)
1. an on off control method, is applied to a kind of gas power station two and drags a unit steam vapour system, and it is special
Levying and be, described gas power station two drags a unit steam vapour system to include: the first steam vapour system, second low
Pressure vapour system and turbine low pressure cylinder；
First steam vapour system includes: the first low-pressure steam pipeline, the first low-pressure steam vapour Electrically operated gate, first low
Pressure steam vapour bypass Electrically operated gate, the first low voltage bypass control valve, the first low other desuperheating water pipeline, the first low other desuperheat
Water adjusts valve and the first low other desuperheating water electrodynamic valve；
Second steam vapour system includes: the second low-pressure steam pipeline, the second low-pressure steam vapour Electrically operated gate, second low
Pressure steam vapour bypass Electrically operated gate, the second low voltage bypass control valve, the second low other desuperheating water pipeline, the second low other desuperheat
Water adjusts valve and the second low other desuperheating water electrodynamic valve；
Described first low-pressure steam vapour Electrically operated gate are arranged on the first low-pressure steam pipeline, by the first low-pressure steam vapour
The two ends of road Electrically operated gate are connected to the first low-pressure steam the two ends of vapour Electrically operated gate；Described first low-pressure steam pipeline one end
Connecting turbine low pressure cylinder, the other end receives from the first waste heat boiler low-pressure steam；Described first low other desuperheat water pipe
The one end on road is connected to described first low-pressure steam vapour Electrically operated gate and first by described first low voltage bypass control valve
On described first low-pressure steam pipeline between waste heat boiler, the other end connects condensate system；
Described second low-pressure steam vapour Electrically operated gate are arranged on described second low-pressure steam pipeline, and described second low pressure is steamed
The two ends of vapour vapour bypass Electrically operated gate are connected to described second low-pressure steam the two ends of vapour Electrically operated gate；Described second low pressure
Jet chimney one end connects turbine low pressure cylinder, and the other end receives from the second waste heat boiler low-pressure steam；Described second
One end of low other desuperheating water pipeline is connected to described second low-pressure steam vapour by described second low voltage bypass control valve
On the second low-pressure steam pipeline between Electrically operated gate and the second waste heat boiler, the other end connects described condensate system；
Described on off control method includes:
Judge that the first steam vapour system has put into automatic position the most；
If the first steam vapour system has put into automatic position, it may be judged whether the second steam vapour system does not puts into and second
Low-pressure steam vapour Electrically operated gate and the second low-pressure steam vapour bypass Electrically operated gate are turned off, or the second low-pressure steam is also
Vapour Electrically operated gate has been opened and the second waste heat boiler is running, or the first low-pressure steam vapour Electrically operated gate are opened；
If the second steam vapour system does not puts into and the second low-pressure steam vapour Electrically operated gate and the second low-pressure steam vapour
Bypass Electrically operated gate is turned off, or the second low-pressure steam vapour Electrically operated gate have been opened and the second waste heat boiler is running, or first
Low-pressure steam vapour Electrically operated gate are opened, it may be judged whether at least meet one of three below condition:
A1: the second low pressure vapour Electrically operated gate have been opened and the second waste heat boiler runs；
And first waste heat boiler run and the absolute value of pressure difference value before and after the first low-pressure steam vapour Electrically operated gate is little
In a predetermined pressure, and the absolute value of the temperature gap before and after the first low-pressure steam vapour electrodynamic valve is less than a pre-constant temperature
Degree；
And first, second combustion engine load deviation less than predetermined load；
A2: or the first low-pressure steam vapour Electrically operated gate open；
A3: or the second low-pressure steam vapour Electrically operated gate and the second low-pressure steam vapour bypass Electrically operated gate close；
If meeting one of condition A1, A2 and A3 or multiple, it is judged that the first low-pressure steam vapour bypass Electrically operated gate
The most open；If the first low-pressure steam vapour bypass Electrically operated gate are not opened, send out the first low-pressure steam vapour bypass electricity
The instruction of dynamic door；
If the first low-pressure steam vapour bypass Electrically operated gate are opened, it is judged that the first low-pressure steam vapour Electrically operated gate are the most
Open, if described first low-pressure steam vapour Electrically operated gate are not opened, send out the first low-pressure steam the instruction of vapour Electrically operated gate；
If the first low-pressure steam vapour Electrically operated gate are opened, it is judged that the first low-pressure steam vapour bypass Electrically operated gate are the most
Close；If the first low-pressure steam vapour bypass Electrically operated gate are not closed, send pass the first low-pressure steam and vapour bypasses Electrically operated gate
Instruction.
On off control method the most according to claim 1, it is characterised in that described on off control method is also
Including:
Judge whether that the first waste heat boiler has moved back and time delay one scheduled time, or the first low lateral pressure control valve is automatically
Position；
If the first waste heat boiler has moved back and time delay one scheduled time, or the first low lateral pressure control valve is in automatic position, sentences
Disconnected whether the first low-pressure steam vapour Electrically operated gate has been closed and the first low-pressure steam vapour bypass Electrically operated gate are closed；If it does not,
Send and close the first low-pressure steam vapour Electrically operated gate and the first low-pressure steam the instruction of vapour bypass Electrically operated gate.
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| CN201510081291.6A CN104654267B (en) | 2015-02-15 | 2015-02-15 | Gas power station two drags a unit steam vapour system and on off control method thereof |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2351913A1 (en) * | 2010-01-12 | 2011-08-03 | Siemens Aktiengesellschaft | Steam power station |
| CN102900478A (en) * | 2012-09-29 | 2013-01-30 | 华北电力大学 | Novel heat supply steam turbine system and regulation method thereof |
| EP2594764A1 (en) * | 2011-11-17 | 2013-05-22 | Siemens Aktiengesellschaft | Steam turbine facility, and method for operating the same |
| CN104074610A (en) * | 2014-06-24 | 2014-10-01 | 北京京桥热电有限责任公司 | Gas-steam combined circulation machine unit and combination method thereof |
| CN204478003U (en) * | 2015-02-15 | 2015-07-15 | 华北电力科学研究院有限责任公司 | Gas power station two drags a unit steam vapour system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8276382B2 (en) * | 2009-03-17 | 2012-10-02 | General Electric Company | Systems and methods for pre-warming a heat recovery steam generator and associated steam lines |
-
2015
- 2015-02-15 CN CN201510081291.6A patent/CN104654267B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2351913A1 (en) * | 2010-01-12 | 2011-08-03 | Siemens Aktiengesellschaft | Steam power station |
| EP2594764A1 (en) * | 2011-11-17 | 2013-05-22 | Siemens Aktiengesellschaft | Steam turbine facility, and method for operating the same |
| CN102900478A (en) * | 2012-09-29 | 2013-01-30 | 华北电力大学 | Novel heat supply steam turbine system and regulation method thereof |
| CN104074610A (en) * | 2014-06-24 | 2014-10-01 | 北京京桥热电有限责任公司 | Gas-steam combined circulation machine unit and combination method thereof |
| CN204478003U (en) * | 2015-02-15 | 2015-07-15 | 华北电力科学研究院有限责任公司 | Gas power station two drags a unit steam vapour system |
Non-Patent Citations (1)
| Title |
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| 二拖一燃气-蒸汽联合循环机组旁路系统控制策略优化;高明帅等;《热力发电》;20150125;第44卷(第1期);第1节"旁路系统及其控制功能"，图1 * |
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