CN106968727A - Steam turbine match somebody with somebody vapour method and steam distribution system - Google Patents
Steam turbine match somebody with somebody vapour method and steam distribution system Download PDFInfo
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- CN106968727A CN106968727A CN201710065388.7A CN201710065388A CN106968727A CN 106968727 A CN106968727 A CN 106968727A CN 201710065388 A CN201710065388 A CN 201710065388A CN 106968727 A CN106968727 A CN 106968727A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
- F01D17/105—Final actuators by passing part of the fluid
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Abstract
The present invention steam turbine match somebody with somebody vapour method, the steam turbine includes first, second, third, fourth regulating valve, wherein described first regulating valve and the 4th regulating valve are diagonally set, and second regulating valve and the 3rd regulating valve are diagonally set, described to include with vapour method：Combination valve operational mode is in during steam turbine initial start, first, second, third, fourth regulating valve starts simultaneously；And whether detection steam turbine reaches sequence valve switching condition, if, then steam turbine is switched to sequential valve operation pattern, wherein, one or more of described first, second, third, fourth regulating valve is closed, and first, second, third, fourth regulating valve is opened according to default opening sequence and aperture size.The unperturbed that the present invention can be achieved between combination valve operational mode and sequential valve operation pattern automatically switches, and restriction loss and the feed pump power consumption of control valve is reduced, so as to improve economy of the unit in, under running on the lower load.
Description
Technical field
The present invention relates to steam turbine technology field, more particularly to a kind of steam turbine matches somebody with somebody vapour method and steam distribution system.
Background technology
Steam turbine be one kind using steam as power, the energy of steam is changed into the rotating machinery of mechanical work, its extensively should
For in large generating system.To meet the actual power consumption demand of user, steam turbine must often adjust its power, so that motor
Power keeps balancing with the extraneous load changed.It is exactly to control it to enter vapour to change steam turbine power most direct, most effective way
Amount, the power of steam turbine can also change therewith when throttle flow changes, i.e. Steam Distribution of Steam Turbine.
The main distribution way of steam of current steam turbine matches somebody with somebody vapour pattern using throttling with vapour, i.e. single valve, refers to that all regulating valves are same
Step act, while open and aperture is identical, equivalent to single regulating valve work.Unit is when off-design operating mode is run, regulation
There is serious restriction loss in valve, reduce the economy of unit operation.Another distribution way of steam is the sequence valve mould of nozzle governing
Formula, multiple regulating valves are opened successively, and in a planned way action enters vapour to each regulating valve so as to change steam turbine in a certain order
Area, the aperture of each control valve is the corresponding instruction output of flow curve according to itself.In underrun, only
One or two valve has restriction loss, itself and valve wide open or fully closed, therefore regulation efficiency is higher, unit operation economy compared with
It is good.Compound valve mode refers to cut-out governing when middle-low load is progressively transitioned into high load capacity using single valve regulation, with single valve pattern one
There is serious restriction loss in sample.Therefore, distribution way of steam is often required to switch in unit operation, is from combination valve mode mostly
Or single valve mode switches to sequence valve mode, and it is desirable that distribution way of steam can be carried out in unperturbed automatic switchover, i.e. handoff procedure
Reduce load fluctuation as far as possible, and the restriction loss of reduction regulating valve, handoff procedure need not exit CCS controls, can also compared with
Manual switching in big load range.
Therefore, it is necessary to a kind of distribution way of steam and steam distribution system of improved steam turbine be provided, to overcome disadvantages described above.
The content of the invention
Match somebody with somebody vapour method it is an object of the present invention to provide a kind of steam turbine of optimization, it can realize that combination valve is run
Unperturbed between pattern and sequential valve operation pattern automatically switches, and reduces restriction loss and the feed pump power consumption of control valve, from
And improve economy of the unit in, under running on the lower load.
It is another object of the present invention to provide a kind of steam distribution system of the steam turbine of optimization, it can realize that combination valve is transported
Unperturbed between row mode and sequential valve operation pattern automatically switches, and reduces restriction loss and the feed pump power consumption of control valve,
So as to improve economy of the unit in, under running on the lower load.
To realize object above, what the present invention provided a kind of steam turbine matches somebody with somebody vapour method, and the steam turbine includes first, the
2nd, the three, the 4th regulating valve, wherein first regulating valve and the 4th regulating valve are diagonally set, second regulating valve
Diagonally set with the 3rd regulating valve, it is described to include with vapour method：
Combination valve operational mode is in during steam turbine initial start, first, second, third, fourth regulating valve is simultaneously
Start；And
Whether detection steam turbine reaches sequence valve switching condition, if so, then steam turbine is switched to sequential valve operation pattern,
Wherein, one or more of described first, second, third, fourth regulating valve is closed, and according to default opening sequence and is opened
Spend size and open first, second, third, fourth regulating valve.
It is preferred that the sequence valve switching condition includes：The load of the steam turbine be more than predetermined load, described first,
Second, third, the 4th regulating valve not carry out valve test, and do not receive loop excision signal.
It is preferred that the predetermined load is 200MW.
It is preferred that the loop excision signal includes：The unit load of the steam turbine exceeds specified peak load or low
In peak regulation minimum load；Or occur the action of (ETS) trip protection in the unit of the steam turbine.
It is preferred that also including detection load deviation, if load deviation keeps original multiple automatically when being more than first predetermined value
Valve operational mode is closed, if load deviation cancels the automatic holding when being less than second predetermined value.
It is preferred that the first predetermined value is 20MW, the second predetermined value is 5MW.
It is preferred that detecting whether emergent power load unbalanced (PLU) is acted the steam turbine, if so, then steam turbine quilt
Combination valve operational mode is switched to, first, second, third, fourth regulating valve is closed simultaneously.
It is preferred that also including：Detect in the steam-turbine unit trip protection (ETS) action whether occur, if so, then vapour
Turbine is switched to combination valve operational mode, and first, second, third, fourth regulating valve is closed simultaneously.
It is preferred that the sequential valve operation pattern includes：Control first regulating valve and the 3rd regulating valve simultaneously
Open, the 4th regulating valve is then opened with the first predetermined Valves ' Overlap, it is last with predetermined second Valves ' Overlap
Open second regulating valve.
Correspondingly, the present invention provides a kind of steam distribution system of steam turbine, and the steam turbine includes first, second, third, the
Four regulating valves, wherein first regulating valve and the 4th regulating valve are diagonally set, second regulating valve and the described 3rd
Regulating valve is diagonally set, and the steam distribution system includes：
Combination valve operational mode：The steam turbine is in initial start, and first, second, third, fourth regulating valve is same
Shi Qidong；
First detection module, to detect whether steam turbine reaches sequence valve switching condition；And
Switching control module, is connected to control steam turbine to cut from the combination valve operational mode with the first detection module
Shift to sequential valve operation pattern：One or more of described first, second, third, fourth regulating valve is closed, and according to default
Opening sequence and aperture size open first, second, third, fourth regulating valve.
It is preferred that the sequence valve switching condition includes：The load of the steam turbine be more than predetermined load, described first,
Second, third, the 4th regulating valve not carry out valve test, and do not receive loop excision signal.
It is preferred that also including what is be used for the detection module of detection load deviation second and be connected with second detection module
Module is kept, keeps module to keep original combination valve operational mode automatically if load deviation is described when being more than first predetermined value,
If load deviation, which is less than holding module during second predetermined value, cancels the automatic holding.
It is preferred that also including the 3rd detection module to detect whether emergent power is load unbalanced in the steam-turbine unit
(PLU) act or trip protection (ETS) action whether occur or whether generator and grid disconnection occur, if so, then described cut
Change control module control steam turbine and be switched to the combination valve operational mode, first, second, third, fourth regulating valve
It is closed simultaneously.
It is preferred that the switching control module is used to control first regulating valve and the 3rd regulating valve while opening
Open, the 4th regulating valve is then opened with the first predetermined Valves ' Overlap, finally opened with the second predetermined Valves ' Overlap
Open second regulating valve.
Compared with prior art, the vapour method and system of matching somebody with somebody of steam turbine of the invention are transported in unit starting using combination valve
Row mode, automatic unperturbed directly switches to sequential valve operation pattern when load increases and in the range of peak load regulation, is ensureing vapour
On the basis of turbine safe operation, the sequential valve operation pattern can obviously reduce restriction loss and the feedwater pump work of control valve
Coal consumption in consumption, reduction unit middle-low load working condition, so as to improve economy of the unit under middle-low load working condition.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, without having to pay creative labor, may be used also
To obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 arranges schematic diagram for the nozzle arrangements of four regulating valves of steam turbine of the present invention.
Fig. 2 is the flow chart of one embodiment with vapour method of steam turbine of the present invention.
Fig. 3 is valve opening-rating curve figure of four regulating valves of the steam turbine of the present invention.
Fig. 4 is to match somebody with somebody vapour performance diagram with the progress experiment acquisition of vapour method using the present invention.
Fig. 5 is the schematic diagram of one embodiment of the steam distribution system of steam turbine of the present invention.
Embodiment
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
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As shown in figure 1, the steam turbine of the present invention include setting counterclockwise the first regulating valve 11, the second regulating valve 12, the
Four regulating valves 14, the 3rd regulating valve 13, wherein the first regulating valve 11 and the 4th regulating valve 14 are diagonally set, the He of the second regulating valve 12
3rd regulating valve 13 is diagonally set, and the high temperature and high pressure steam come out by boiler enters steam turbine by four regulating valves.Correspondingly,
First regulating valve 11, the second regulating valve 12, the 3rd regulating valve 13, the 4th regulating valve 14 are connected respectively to accordingly by four nozzles
Four annular steam rooms 21,22,23,24.
As the improvement with vapour method of the steam turbine of the present invention, comprise the following steps：
301, during unit initial start, in combination valve operational mode, first, second, third, fourth regulating valve 11~14
Start simultaneously；
302, detection steam turbine whether order of arrival Vavle switching condition, if so, then perform step 303 switch；
303, sequential valve operation pattern is switched to, one of first, second, third, fourth regulating valve 11~14 is closed
Or many persons, and open first, second, third, fourth regulating valve 11~14 according to default opening sequence and aperture size.
Wherein, the sequence valve switching condition includes：The load of the steam turbine is more than predetermined load, and this first, second, the
3rd, the 4th regulating valve 11~14 is not carrying out valve test, and does not receive loop excision signal.Certainly, in addition to some
The condition of unit operation, for example：Unit is grid-connected.
Specifically, excision signal in the loop includes：The unit load of steam turbine is beyond specified peak load or less than peak regulation
Minimum load, such as specified peak load is 600MW, and peak regulation minimum load is 250MW；Or occur open circuit in the unit of steam turbine
Action；Or there is valve position limitation protection act；Or subsidiary engine (such as steam feed pump, pressure fan, air-introduced machine, the primary air fan of unit
Or air preheater) there is trip operation.If there is these loops excision signal, it will be unable to switch to sequential valve operation pattern, continue
Keep original combination valve operational mode.
For example, when the load of steam turbine is more than 200MW, when judging that other conditions meet, automatically switching to order
Valve operational mode, wherein, one or more of four regulating valves are closed, and enter according to certain opening sequence and aperture size
The interim unlatching of each regulating valve of row.The default load 200MW, is the unit for rated load for 600MW, specified at other
In the unit of load, the predetermined load can be set to about the 30% of rated load.As a preferred embodiment, in sequential valve operation
In pattern, the first regulating valve 11 and the 3rd regulating valve 13 are first opened simultaneously, are then opened the 4th with predetermined Valves ' Overlap and are adjusted
Valve 14 is saved, the second regulating valve 13 is then opened with predetermined Valves ' Overlap.It is preferred that the Valves ' Overlap is 95%.
Specifically, the aperture of each regulating valve can be according to adjusting valve characteristic to be adjusted, and Fig. 3 is four regulating valves 11~14
Valve opening-rating curve.As seen from the figure, each regulating valve is below 15% aperture, and flow is 0；First regulating valve 11
60% or so is reached in valve opening with the 4th regulating valve 14, flow reaches 95% or so；Second regulating valve 12 is in valve opening
45% or so is reached, flow reaches 95% or so；3rd regulating valve 13 reaches 41% or so in valve opening, and flow reaches 95%
Left and right.
Being carried out with vapour method of steam turbine after optimization is matched somebody with somebody after vapour, the present invention present improve match somebody with somebody vapour characteristic curve,
As shown in Figure 4.
As a preferred embodiment, of the invention also includes with vapour method：It is suitable being switched to from combination valve operational mode
Detection load deviation before sequence valve operational mode, if load deviation keeps original combination valve to transport automatically when being more than first predetermined value
Row mode, if load deviation cancels the automatic holding when being less than second predetermined value.For example, automatic when load deviation is more than 20MW
Keep, i.e. pause switching；Then cancel automatically when load deviation is less than 5MW and keeping, that is, switch over.It is preferred that operations staff
It can manually be kept in handoff procedure and cancel holding.
In a further embodiment, it should also include running mould from sequential valve operation pattern switching to combination valve with vapour method
Formula.For example, setting MTS, combination valve operational mode can be unconditionally switched to for operations staff.And for example, it can be set
Automatically switch.Specifically, if there is one of situations below, load valve operational mode is automatically switched to：Steam turbine emergent power
Whether trip protection (ETS) action, generator and grid disconnection are occurred in load unbalanced (PLU) action, steam-turbine unit.
The vapour method of matching somebody with somebody of the steam turbine of the present invention uses combination valve operational mode in unit starting, when load increases simultaneously
Automatic no-harass switch is into sequential valve operation pattern in the range of peak load regulation, and on the basis of Turbine Safety operation is ensured, this is suitable
Sequence valve operational mode can obviously reduce in the restriction loss and feed pump power consumption, reduction unit middle-low load working condition of control valve
Coal consumption, so as to improve economy of the unit under middle-low load working condition.
Correspondingly, the steam distribution system 400 of steam turbine of the invention includes combination valve operational mode 410, sequential valve operation mould
Formula 420, first detection module 430 and switching control module 440.Specifically, combination valve operational mode 410 in steam turbine first
Begin to enter when starting, i.e. first, second, third, fourth regulating valve 11~14 of steam turbine starts simultaneously, and aperture is consistent.It is suitable
Sequence valve operational mode 420 refers to four non-concurrent of regulating valve 11~14 and started, but according to default opening sequence and default
Aperture carries out interim unlatching.Specifically, first detection module 430 is used to detect whether steam turbine reaches order Vavle switching bar
Part, switching control module 440 is connected to control steam turbine to switch to from combination valve operational mode 410 with first detection module 430
Sequential valve operation pattern 420, the action of switching is specifically included：Close in first, second, third, fourth regulating valve 11~14
It is one or more, and according to default opening sequence and aperture size open first, second, third, fourth regulating valve 11~
14。
Preferably, sequence valve switching condition includes：The load of steam turbine is more than predetermined load, described first, second, the
3rd, the 4th regulating valve is not carrying out valve test, and when not receiving loop excision signal.In addition to some units certainly,
The condition of operation, for example：Unit is grid-connected.For example, the predetermined load is set as 200MW.That is, in the situation of set grid-connection
Under, the load of steam turbine is more than 200MW, and four regulating valves 11~14 are not carrying out valve test, also do not receive any
When loop cuts off signal, first detection module 430 can just send switching signal to switching control module 440 to trigger switching, will
Combination valve operational mode 410 switches to sequential valve operation pattern 420.
Specifically, excision signal in loop includes：The unit load of steam turbine is beyond specified peak load or less than peak regulation most
Underload, such as specified peak load is 600MW, and peak regulation minimum load is 250MW；Or occur in the unit of steam turbine breaking dynamic
Make；Or there is valve position limitation protection act；Or unit subsidiary engine (such as steam feed pump, pressure fan, air-introduced machine, primary air fan or
Air preheater) there is trip operation.If there is these loops excision signal, it will be unable to switch to sequential valve operation pattern 420, continue
Keep original combination valve operational mode 410.The judgement of these loops excision is by the loop excision detection mould in steam distribution system 400
Block (not shown) is performed, and loop excision detection module is connected with switching control module 440.
As a preferred embodiment, the steam distribution system 400 also includes the second detection being connected with switching control module 440
Module (not shown) and holding module (not shown), second detection module are used to switch to from combination valve operational mode 410
Detection load deviation before sequential valve operation pattern 420, if load deviation is more than first predetermined value, with the second detection module
Connected holding module will keep original combination valve operational mode 410 automatically, if load deviation takes when being less than second predetermined value
Disappear the automatic holding, and sends the switching that switching signal carries out sequential valve operation pattern 420 to switching control module 440.For example,
Kept automatically when load deviation is more than 20MW, i.e. pause switching；Then cancel automatically when load deviation is less than 5MW and keeping, i.e.,
Switch over.It is preferred that operations staff can be kept and be cancelled holding manually in handoff procedure.Such benefit is,
It can further prevent from judging by accident and having carried out improperly pattern switching.Correspondingly, pause switching can be shown as on the control panel
Button and switching push button, are operated manually for operations staff.
As another preferred embodiment, the steam distribution system 400 also includes the 3rd detection being connected with switching control module 440
Whether module (not shown), there is tripping action or whether emergent power is load unbalanced for detecting in steam-turbine unit
(PLU) act or tripping action whether occur or whether generator and grid disconnection occur, if any of the above action is detected
Arrive, then send switching signal to switching control module 440 to control steam turbine to switch to combination valve from sequential valve operation pattern 420
First, second, third, fourth regulating valve 11~14, i.e., be simultaneously open by operational mode 410 with consistent aperture again.When
So, the switching action can for example set manual switching button on the control panel by switching over manually, can be with for operations staff
Unconditionally switch to combination valve operational mode.
As a preferred embodiment, switching control module 440 controls to be used to control first while opening the first regulating valve
11 and the 3rd regulating valve 13, the 4th regulating valve 14 is then opened with predetermined Valves ' Overlap, it is then overlapping with predetermined valve
Degree opens the second regulating valve 13.It is preferred that the Valves ' Overlap is 95%.Above-mentioned is only the preferred order of one of which, when
So, the sequential valve operation pattern 420 controlled by switching control module 440 can have a variety of, for example, first to the 3rd is adjusted
Valve is first opened, and then opens the 4th regulating valve with predetermined Valves ' Overlap, and these can combine Flow characteristic test and obtain
.
The steam distribution system 400 of the steam turbine of the present invention uses combination valve operational mode 410 in unit starting, increases in load
When big and automatic no-harass switch, into sequential valve operation pattern 420, is ensureing the base of Turbine Safety operation in the range of peak load regulation
On plinth, the sequential valve operation pattern 420 can obviously reduce control valve restriction loss and feed pump power consumption, reduction unit in it is low
Coal consumption in load condition, so as to improve economy of the unit under middle-low load working condition.
Above in association with most preferred embodiment, invention has been described, but the invention is not limited in implementation disclosed above
Example, and modification, equivalent combinations that the various essence according to the present invention are carried out should be covered.
Claims (14)
1. a kind of steam turbine matches somebody with somebody vapour method, the steam turbine includes first, second, third, fourth regulating valve, wherein described the
One regulating valve and the 4th regulating valve are diagonally set, and second regulating valve and the 3rd regulating valve are diagonally set, described
Include with vapour method：
Combination valve operational mode is in during steam turbine initial start, first, second, third, fourth regulating valve starts simultaneously；
Whether detection steam turbine reaches sequence valve switching condition, if so, then steam turbine is switched to sequential valve operation pattern, its
In, one or more of described first, second, third, fourth regulating valve is closed, and according to default opening sequence and aperture
Size opens first, second, third, fourth regulating valve.
2. steam turbine as claimed in claim 1 match somebody with somebody vapour method, it is characterised in that：The sequence valve switching condition includes：Institute
The load for stating steam turbine is more than predetermined load, and first, second, third, fourth regulating valve is not carrying out valve test,
And loop excision signal is not received.
3. steam turbine as claimed in claim 2 match somebody with somebody vapour method, it is characterised in that：The predetermined load is 200MW.
4. steam turbine as claimed in claim 2 match somebody with somebody vapour method, it is characterised in that：The loop excision signal includes：It is described
The unit load of steam turbine is beyond specified peak load or less than peak regulation minimum load；Or jumped in the unit of the steam turbine
Lock protection (ETS) action.
5. steam turbine as claimed in claim 1 match somebody with somebody vapour method, it is characterised in that：Also include detection load deviation, if load
Deviation keeps original combination valve operational mode automatically when being more than first predetermined value, if load deviation takes when being less than second predetermined value
Disappear the automatic holding.
6. steam turbine as claimed in claim 5 match somebody with somebody vapour method, it is characterised in that：The first predetermined value is 20MW, described
Second predetermined value is 5MW.
7. steam turbine as claimed in claim 1 match somebody with somebody vapour method, it is characterised in that also include：Whether detect the steam turbine
Emergent power load unbalanced (PLU) is acted, if so, then steam turbine is switched to combination valve operational mode, and described first, the
2nd, the three, the 4th regulating valves are closed simultaneously.
8. steam turbine as claimed in claim 1 match somebody with somebody vapour method, it is characterised in that also include：Detect the steam-turbine unit
In whether there is trip protection (ETS) action, if so, then steam turbine is switched to combination valve operational mode, described first, the
2nd, the three, the 4th regulating valves are closed simultaneously.
9. steam turbine as claimed in claim 1 match somebody with somebody vapour method, it is characterised in that：The sequential valve operation pattern includes：Control
Make first regulating valve and the 3rd regulating valve is opened simultaneously, described is then opened with the first predetermined Valves ' Overlap
Four regulating valves, second regulating valve is finally opened with the second predetermined Valves ' Overlap.
10. a kind of steam distribution system of steam turbine, the steam turbine includes first, second, third, fourth regulating valve, wherein described
First regulating valve and the 4th regulating valve are diagonally set, and second regulating valve and the 3rd regulating valve are diagonally set, institute
Stating steam distribution system includes：
Combination valve operational mode：The steam turbine is in initial start, and first, second, third, fourth regulating valve is opened simultaneously
It is dynamic；
First detection module, to detect whether steam turbine reaches sequence valve switching condition；
Switching control module, is connected to control steam turbine to switch to from the combination valve operational mode with the first detection module
Sequential valve operation pattern：One or more of described first, second, third, fourth regulating valve is closed, and is opened according to default
Open order and aperture size opens first, second, third, fourth regulating valve.
11. the steam distribution system of steam turbine as claimed in claim 10, it is characterised in that：The sequence valve switching condition includes：
The load of the steam turbine is more than predetermined load, and first, second, third, fourth regulating valve is not carrying out valve activity examination
Test, and do not receive loop excision signal.
12. the steam distribution system of steam turbine as claimed in claim 10, it is characterised in that：Also include being used for detection load deviation the
Two detection modules and the holding module being connected with second detection module, if described in when load deviation is more than first predetermined value
Keep module to keep original combination valve operational mode automatically, keep module to take if load deviation is described when being less than second predetermined value
Disappear the automatic holding.
13. the steam distribution system of steam turbine as claimed in claim 10, it is characterised in that：Also include the 3rd detection module to detect
In the steam-turbine unit whether emergent power load unbalanced (PLU) action or whether occur trip protection (ETS) action or
Whether generator and grid disconnection are occurred, if so, then the switching control module control steam turbine is switched to the combination valve
Operational mode, first, second, third, fourth regulating valve is closed simultaneously.
14. the steam distribution system of steam turbine as claimed in claim 10, it is characterised in that：The switching control module is used to control
First regulating valve and the 3rd regulating valve are opened simultaneously, and the described 4th is then opened with the first predetermined Valves ' Overlap
Regulating valve, second regulating valve is finally opened with the second predetermined Valves ' Overlap.
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| CN107218085A (en) * | 2017-07-25 | 2017-09-29 | 大唐阳城发电有限责任公司 | The septum valve air intake control system and its control method of a kind of steam turbine in thermal power plant |
| CN110645053A (en) * | 2018-10-18 | 2020-01-03 | 上海明华电力技术工程有限公司 | Automatic sliding pressure switching control method synchronous with valve sequence switching |
| CN111927570A (en) * | 2020-08-11 | 2020-11-13 | 西安热工研究院有限公司 | Steam distribution curve optimization method for undisturbed switching of single valve/sequence valve of nozzle-regulated steam turbine |
| CN112901288A (en) * | 2021-02-05 | 2021-06-04 | 神华神东电力有限责任公司 | Switching method and control device for regulating valve of steam turbine |
| CN112901288B (en) * | 2021-02-05 | 2023-02-28 | 神华神东电力有限责任公司 | Switching method and control device for regulating valve of steam turbine |
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