CN106765047A - Water level regulation method and apparatus - Google Patents
Water level regulation method and apparatus Download PDFInfo
- Publication number
- CN106765047A CN106765047A CN201710023368.3A CN201710023368A CN106765047A CN 106765047 A CN106765047 A CN 106765047A CN 201710023368 A CN201710023368 A CN 201710023368A CN 106765047 A CN106765047 A CN 106765047A
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- Prior art keywords
- heater
- water level
- end difference
- predetermined condition
- poor
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D5/00—Controlling water feed or water level; Automatic water feeding or water-level regulators
- F22D5/26—Automatic feed-control systems
- F22D5/30—Automatic feed-control systems responsive to both water level and amount of steam withdrawn or steam pressure
Abstract
The invention discloses a kind of water level regulation method and apparatus.Wherein, the method includes：The upper end for obtaining heater is poor, wherein, upper end difference is the temperature value of saturated vapor under heater initial steam pressure, subtracts the water temperature of heater outlet；Water level in valve adjustment heater is controlled to adjust according to upper end difference.The present invention solves correlation technique mesohigh heater when given water level runs, and high-pressure heater upper end difference is larger with the heater design poor deviation in upper end, causes the technical problem of the thermal efficiency for influenceing unit.
Description
Technical field
The present invention relates to high-pressure heater field, in particular to a kind of water level regulation method and apparatus.
Background technology
At present, High Pressure Heater in Thermal Power Station is the visual plant for improving Steam Turbine extraction cycle efficiency, its work
Principle is：High-pressure heater is the surface heater for being connected on the heating feedwater after high pressure water pump, for improve boiler to
Coolant-temperature gage, increases economic efficiency.High-pressure heater the inside has been covered with small thin pipe, and boiler feedwater, pipeline external are walked in pipeline
It is that each section extracted out from steam turbine draws gas, by heat exchange, improves the temperature of boiler feedwater, draw gas and be condensed into water, becomes hydrophobic,
The hydrophobic of high-pressure heater removes higher-pressure deaerator.
High-pressure heater is surface heater, and it is poor control end to run most economical mode, and the end smaller economy of difference is got over
Height, the method for reducing end difference is exactly to adjust water level, when equipment enters steady load running status, if taking end difference signal to water
Position is finely adjusted, and equipment can be made to be run in the state of more economical energy-conservation.But, high-pressure heater runs in given water level
When, high-pressure heater upper end difference is larger with the heater design poor deviation in upper end, is not the most economical method of operation of heater, influence
The thermal efficiency of unit.
Regarding to the issue above, effective solution is not yet proposed at present.
The content of the invention
A kind of water level regulation method and apparatus are the embodiment of the invention provides, at least to solve the heating of correlation technique mesohigh
Device is when given water level runs, and high-pressure heater upper end difference is larger with the heater design poor deviation in upper end, causes to influence unit
The technical problem of the thermal efficiency.
A kind of one side according to embodiments of the present invention, there is provided water level regulation method, including：Obtain the upper of heater
End is poor, wherein, upper end difference is the temperature value of saturated vapor under heater initial steam pressure, subtracts the water temperature of heater outlet；According to
Upper end difference controls to adjust the water level in valve adjustment heater.
Further, controlling to adjust the water level in valve adjustment heater according to upper end difference includes：By upper end difference with set in advance
Fixed upper end difference is compared；Water level in valve adjustment heater is controlled to adjust according to comparative result.
Further, before the upper end difference for obtaining heater, method also includes：Judge whether to meet predetermined condition,
In the case of meeting predetermined condition, acquisition upper end is poor, and the water level in the difference adjustment heater of upper end.
Further, in the case where predetermined condition is unsatisfactory for, obtain heater in actual water level, by actual water level with
Water level set in advance is compared；Water level in heater is adjusted according to result of the comparison.
Further, meeting predetermined condition includes：Unit load stabilization, extraction pressure stabilization, feedwater flow stabilization and
Stable level in heater.
Another aspect according to embodiments of the present invention, additionally provides a kind of water level control apparatus, including：Acquisition module, uses
It is poor in the upper end for obtaining heater, wherein, upper end difference is the temperature value of saturated vapor under heater initial steam pressure, subtracts heater
The water temperature of outlet；First adjusting module, for controlling to adjust the water level in valve adjustment heater according to upper end difference.
Further, the first adjusting module, for being compared upper end difference is poor with upper end set in advance, and according to than
Compared with the water level in output control regulating valve adjustment heater.
Further, device also includes：Judge module, for judging whether to meet predetermined condition, is meeting predetermined condition
In the case of, call acquisition module and adjusting module.
Further, device also includes：Second adjusting module, in the case where predetermined condition is unsatisfactory for, obtaining and adding
Actual water level in hot device, actual water level is compared with water level set in advance；And heating is adjusted according to result of the comparison
Water level in device.
Further, meeting predetermined condition includes：Unit load stabilization, extraction pressure stabilization, feedwater flow stabilization and
Stable level in heater.
In embodiments of the present invention, it is poor by obtaining the upper end of heater, wherein, upper end difference is under heater initial steam pressure
The temperature value of saturated vapor, subtracts the water temperature of heater outlet；Water level in valve adjustment heater is controlled to adjust according to upper end difference,
The purpose that the water level in valve regulation heater is controlled to adjust according to the upper end of heater difference is reached, it is achieved thereby that ensureing heating
Device runs under being located at economical and energy saving state, and then improves the technique effect of the thermal efficiency of heater, and then solves correlation technique
, when given water level runs, high-pressure heater upper end difference is larger with the heater design poor deviation in upper end, causes for mesohigh heater
Influence the technical problem of the thermal efficiency of unit.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair
Bright schematic description and description does not constitute inappropriate limitation of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the flow chart of a kind of optional water level regulation method according to embodiments of the present invention；
Fig. 2 is the flow chart of the optional water level regulation method of another kind according to embodiments of the present invention；
Fig. 3 is the schematic diagram of water level regulation method according to the preferred embodiment of the invention；And
Fig. 4 is the schematic diagram of water level control apparatus according to embodiments of the present invention.
Specific embodiment
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, is clearly and completely described to the technical scheme in the embodiment of the present invention, it is clear that described embodiment is only
The embodiment of a part of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, should all belong to the model of present invention protection
Enclose.
It should be noted that term " first ", " in description and claims of this specification and above-mentioned accompanying drawing
Two " it is etc. for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so using
Data can exchange in the appropriate case, so as to embodiments of the invention described herein can with except illustrating herein or
Order beyond those of description is implemented.Additionally, term " comprising " and " having " and their any deformation, it is intended that cover
Lid is non-exclusive to be included, for example, the process, method, system, product or the equipment that contain series of steps or unit are not necessarily limited to
Those steps or unit clearly listed, but may include not list clearly or for these processes, method, product
Or other intrinsic steps of equipment or unit.
According to embodiments of the present invention, there is provided a kind of embodiment of the method for water level regulation method, it is necessary to explanation, attached
The step of flow of figure is illustrated can perform in the such as one group computer system of computer executable instructions, though also,
So logical order is shown in flow charts, but in some cases, can be with shown different from order execution herein
Or the step of description.
Fig. 1 is the flow chart of a kind of optional water level regulation method according to embodiments of the present invention, as shown in figure 1, the party
Method comprises the following steps：
Step S102, the upper end for obtaining heater is poor, wherein, upper end difference is the temperature of saturated vapor under heater initial steam pressure
Angle value, subtracts the water temperature of heater outlet；
Step S104, the water level in valve adjustment heater is controlled to adjust according to upper end difference.
Above-mentioned steps S102 to step S104, it is poor by the upper end for obtaining heater, wherein, upper end difference enters vapour for heater
The temperature value of saturated vapor under pressure, subtracts the water temperature of heater outlet；According in the difference control and regulation valve adjustment heater of upper end
Water level, reached the purpose that the water level in valve regulation heater is controlled to adjust according to the upper end of heater difference, and then solve
Correlation technique mesohigh heater when given water level runs, high-pressure heater upper end difference with heater design upper end difference deviation compared with
Greatly, the technical problem of the thermal efficiency for influenceing unit is caused, it is achieved thereby that ensure that heater runs under being located at economical and energy saving state,
And then improve the technique effect of the thermal efficiency of heater.
In the scheme that step S102 is provided, the heater in the embodiment can be the high pressure for being applied to thermal power plant
Heater, the upper end difference △ T of heater can be the temperature value T1 of heater saturated vapor under admission pressure, subtract heater
The water temperature T T of outlet, namely △ T=T1-TT.The upper end difference that the embodiment obtains heater can be by taking heater steam pressure
Force signal is converted into saturated vapor corresponding temperature T1 under the pressure by database, then subtracts and is detected by temperature sensor
Heater outlet water temperature T T, you can △ T=T1-TT are differed from the upper end for getting heater.
In the scheme that step S104 is provided, after the upper end for getting heater differs from, the embodiment can be according to upper
End difference controls to adjust the water level that valve adjusts heater.Alternatively, the adjustment process to the water level of heater can include following step
Suddenly：It is compared upper end difference is poor with upper end set in advance；Water in valve adjustment heater is controlled to adjust according to comparative result
Position.It should be noted that the embodiment of the present invention is not specifically limited to upper end set in advance difference, upper end difference set in advance can
To be set according to the actual requirements, such as ± 2 DEG C.The upper end of the heater got in step S102 is differed from and preset
Upper end difference be compared, if the comparison indicate that the upper end difference of the heater got in step S102 is more than presetting
Upper end differ from when, the embodiment can control to adjust valve reduction heater water level；If the comparison indicate that in step S102
When the upper end difference of the heater for getting is differed from less than upper end set in advance, the embodiment can control to adjust valve and raise heater
Water level；If the comparison indicate that the upper end difference of the heater got in step S102 is poor equal to upper end set in advance
When, the embodiment can control to adjust valve and the water level of heater is not adjusted.
Alternatively, the water level controlled to adjust in valve adjustment heater is needed in the range of positive and negative alarming value set in advance,
So ensure that the water level of heater is in safe range, and then reach the effect for maintaining heater safe and stable operation.
It should be noted that the embodiment by by the upper end of heater differ from △ T it is poor with upper end set in advance (for example ±
2 DEG C) calculating output regulating valve switching signal is compared, the switching signal can serve to indicate that regulating valve changes water level, so that
The water level for obtaining heater maintains operation under most economical power save mode, and then reaches the effect of the thermal efficiency for improving heater unit
Really.
As a kind of alternatively embodiment, as shown in Fig. 2 before the upper end difference that step S102 obtains heater, the reality
The water level regulation method for applying example can also include：Step S101, judges whether to meet predetermined condition.Wherein, predetermined bar is being met
In the case of part, the upper end for performing step S102 to step S104 acquisition heaters is poor, and controls to adjust valve tune according to upper end difference
Water level in whole heater.In the case where predetermined condition is unsatisfactory for, following steps are performed：Step S103, in acquisition heater
Actual water level, actual water level is compared with water level set in advance；Step S105, adjusts according to result of the comparison and heats
Water level in device.
It should be noted that meet predetermined condition can include：Unit load stabilization, extraction pressure stabilization, feedwater flow
Stable level in stabilization and heater.The present invention only lists above-mentioned part predetermined condition, pre- in the embodiment of the present invention
Fixed condition can also include other conditions, no longer illustrate one by one herein.The embodiment first determines whether whether heater meets
Predetermined condition, when judging to meet predetermined condition, then can control to adjust valve adjustment heater according to the upper end of heater difference
Water level；When judging to be unsatisfactory for predetermined condition, then can be adjusted according to the technical scheme shown in step S103 to step S105
The water level of whole heater.
Specifically, in the technical scheme shown in step S103 to step S105, the actual water level in heater can pass through
Level sensor detection is obtained, and after the actual water level for getting heater, it is compared with water level set in advance,
The water level that valve adjusts heater is controlled to adjust according to comparative result, wherein, when the actual water level of comparative result instruction heater is high
When water level set in advance, the embodiment can control to adjust the water level of valve reduction heater；When comparative result indicates to heat
When the actual water level of device is less than water level set in advance, the embodiment can control to adjust the water level that valve raises heater；When than
When relatively the actual water level of result instruction heater is identical with water level set in advance, the embodiment can control to adjust valve to heating
The water level of device does not make any adjustments.
Water level regulation method in the alternative embodiment by water level signal adjustment (actual water level i.e. according to heater with it is pre-
The comparative result of the water level for first setting controls to adjust the water level that valve adjusts heater) as basic adjustment, will end difference adjustment (i.e. root
Control to adjust the water level that valve adjusts heater according to the upper end difference of the heater comparative result poor with upper end set in advance) as plus
Micro-adjustment during hot device stable state, both be or relation, when a predetermined condition is satisfied, adjustment process automatically switch to end it is poor
Adjustment, when any one condition in being unsatisfactory for predetermined condition, adjustment process automatically switches to water level signal adjustment.Such energy
Enough so that the water level adjustment process of heater is more flexible, the water level of heater can be carried out under different running statuses with being met
Adjustment.
Present invention also offers a kind of preferred embodiment, Fig. 3 is water level regulation method according to the preferred embodiment of the invention
Schematic diagram, as shown in figure 3, initial steam pressure PT can be converted into saturated vapor corresponding temperature fx by the embodiment, then with go out
Mouth feed temperature TT does subtraction, and the upper end for obtaining heater is poor.Upper end difference to heater performs enhanced processing and amplitude limiting processing
A poor with upper end set in advance is compared afterwards, to realize that the water level to heater is adjusted.The embodiment can be by inciting somebody to action
Comparative result T and liquid feeding high position LT between the upper end difference and upper end set in advance difference of heater are compared, according to comparing
Result realizes the rising K or reduction ∫ adjustment to the water level of heater.The embodiment can also carry out hand automatic switchover, in root
Switched over according to upper end difference regulation heater water level and according between actual water level regulation heater water level.It should be noted that
Adjustment to the water level of heater is needed in the range of positive and negative alarming value, and to the adjustment process of the water level of heater in real time with
Track process, as long as detecting when meeting water level regularization condition, you can control to adjust the water level that valve controls heater.Also need to
Bright, the actuator in the embodiment can be drain regulating valve.
It is signal that water level regulation method of the invention can take heater upper end difference, and the upper end difference with setting is counted
Calculate, export drain regulating valve opening amount signal, upper end difference feeds back to governing loop, completes the regulation process number of winning the confidence.The method
Increase signal of change logic in original high-pressure heater Water Level Regulating System, relatively more direct, simple structure is reliable, easy to process,
Low cost.
According to embodiments of the present invention, a kind of device embodiment of water level control apparatus is additionally provided, it is necessary to explanation, is somebody's turn to do
Water level control apparatus can be used for performing the water level regulation method in the embodiment of the present invention, the water level regulation in the embodiment of the present invention
Method can be performed in the water level control apparatus.
Fig. 4 is the schematic diagram of water level control apparatus according to embodiments of the present invention, as shown in figure 4, the device can include：
Acquisition module 22, the upper end for obtaining heater is poor, wherein, upper end difference is saturation steaming under heater initial steam pressure
The temperature value of vapour, subtracts the water temperature of heater outlet；First adjusting module 24, adds for controlling to adjust valve adjustment according to upper end difference
Water level in hot device.
It should be noted that the acquisition module 22 in the embodiment can be used for performing the step in the embodiment of the present application
S102, the first adjusting module 24 in the embodiment can be used for performing the step S104 in the embodiment of the present application.Above-mentioned module
It is identical with the example and application scenarios that the step of correspondence is realized, but it is not limited to above-described embodiment disclosure of that.
Alternatively, the first adjusting module 24 can be used for being compared upper end difference is poor with upper end set in advance, and root
The water level in valve adjustment heater is controlled to adjust according to comparative result.
Alternatively, the device can also include：Judge module, it is predetermined meeting for judging whether to meet predetermined condition
In the case of condition, acquisition module and the first adjusting module are called.
Alternatively, the device can also include：Second adjusting module, in the case where predetermined condition is unsatisfactory for, obtaining
The actual water level in heater is taken, actual water level is compared with water level set in advance；And adjusted according to result of the comparison
Water level in heater.
Alternatively, meeting predetermined condition includes：Unit load stabilization, extraction pressure stabilization, feedwater flow stabilization, Yi Jijia
Stable level in hot device.
Can be reached by above-mentioned module and the water level controlled to adjust in valve regulation heater is differed from according to the upper end of heater
Purpose, and then correlation technique mesohigh heater is solved when given water level runs, high-pressure heater upper end differs from and heater
Design upper end difference deviation is larger, causes the technical problem of the thermal efficiency for influenceing unit, it is achieved thereby that ensureing that heater is located at warp
Run under Ji power save mode, and then improve the technique effect of the thermal efficiency of heater.
The embodiments of the present invention are for illustration only, and the quality of embodiment is not represented.
In the above embodiment of the present invention, the description to each embodiment all emphasizes particularly on different fields, and does not have in certain embodiment
The part of detailed description, may refer to the associated description of other embodiment.
In several embodiments provided herein, it should be understood that disclosed technology contents, can be by other
Mode is realized.Wherein, device embodiment described above is only schematical, such as division of described unit, Ke Yiwei
A kind of division of logic function, can there is other dividing mode when actually realizing, such as multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored, or does not perform.Another, shown or discussed is mutual
Between coupling or direct-coupling or communication connection can be the INDIRECT COUPLING or communication link of unit or module by some interfaces
Connect, can be electrical or other forms.
The unit that is illustrated as separating component can be or may not be it is physically separate, it is aobvious as unit
The part for showing can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On unit.Some or all of unit therein can be according to the actual needs selected to realize the purpose of this embodiment scheme.
In addition, during each functional unit in each embodiment of the invention can be integrated in a processing unit, it is also possible to
It is that unit is individually physically present, it is also possible to which two or more units are integrated in a unit.Above-mentioned integrated list
Unit can both be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If the integrated unit is to realize in the form of SFU software functional unit and as independent production marketing or use
When, can store in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part for being contributed to prior art in other words or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are used to so that a computer
Equipment (can be personal computer, server or network equipment etc.) perform each embodiment methods described of the invention whole or
Part steps.And foregoing storage medium includes：USB flash disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can be with store program codes
Medium.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of water level regulation method, it is characterised in that including：
The upper end for obtaining heater is poor, wherein, the upper end difference is the temperature value of saturated vapor under the heater initial steam pressure,
Subtract the water temperature of the heater outlet；
The water level during valve adjusts the heater is controlled to adjust according to upper end difference.
2. method according to claim 1, it is characterised in that valve is controlled to adjust according to upper end difference and adjusts the heating
Water level in device includes：
It is compared the upper end difference is poor with upper end set in advance；
Water level in controlling the regulating valve to adjust the heater according to comparative result.
3. method according to claim 1 and 2, it is characterised in that before the upper end difference for obtaining heater, methods described
Also include：
Judge whether to meet predetermined condition, in the case where the predetermined condition is met, the acquisition upper end is poor, and according to described
Water level in the difference adjustment heater of upper end.
4. method according to claim 3, it is characterised in that methods described also includes：
In the case where the predetermined condition is unsatisfactory for, obtain the actual water level in the heater, by the actual water level with
Water level set in advance is compared；
Water level in the heater is adjusted according to result of the comparison.
5. method according to claim 3, it is characterised in that meeting the predetermined condition includes：Unit load is stablized, is taken out
Stable level in steam pressure stabilization, feedwater flow stabilization and the heater.
6. a kind of water level control apparatus, it is characterised in that including：
Acquisition module, the upper end for obtaining heater is poor, wherein, the upper end difference is saturation under the heater initial steam pressure
The temperature value of steam, subtracts the water temperature of the heater outlet；
First adjusting module, for controlling to adjust the water level during valve adjusts the heater according to upper end difference.
7. device according to claim 6, it is characterised in that
First adjusting module, for being compared the upper end difference is poor with upper end set in advance, and according to comparing knot
Fruit controls the water level in the regulating valve adjustment heater.
8. the device according to claim 6 or 7, it is characterised in that described device also includes：
Judge module, for judging whether to meet predetermined condition, in the case where the predetermined condition is met, calls the acquisition
Module and first adjusting module.
9. device according to claim 8, it is characterised in that described device also includes：
Second adjusting module, in the case where the predetermined condition is unsatisfactory for, obtaining the reality in the heater
Water level, the actual water level is compared with water level set in advance；And according in the result of the comparison adjustment heater
Water level.
10. device according to claim 8, it is characterised in that meeting the predetermined condition includes：Unit load stabilization,
Stable level in extraction pressure stabilization, feedwater flow stabilization and the heater.
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|---|---|---|---|
| CN201710023368.3A CN106765047A (en) | 2017-01-11 | 2017-01-11 | Water level regulation method and apparatus |
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|---|---|---|---|
| CN201710023368.3A CN106765047A (en) | 2017-01-11 | 2017-01-11 | Water level regulation method and apparatus |
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Family
ID=58948375
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| CN201710023368.3A Pending CN106765047A (en) | 2017-01-11 | 2017-01-11 | Water level regulation method and apparatus |
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| CN110056858A (en) * | 2019-05-15 | 2019-07-26 | 贵州电网有限责任公司 | A kind of fired power generating unit Heater Terminal Temperature Difference adaptive regulation method and device |
| CN110296387A (en) * | 2019-06-18 | 2019-10-01 | 华能国际电力股份有限公司玉环电厂 | A kind of heater liquid level automatic optimal control method |
| CN110940205A (en) * | 2019-12-16 | 2020-03-31 | 广西电网有限责任公司电力科学研究院 | Real-time control system and method for operation efficiency of horizontal high-pressure heater |
| CN110940206A (en) * | 2019-12-16 | 2020-03-31 | 广西电网有限责任公司电力科学研究院 | Real-time control system and method for end difference of low-pressure heater with drainage cooling area |
| CN111897203A (en) * | 2020-06-17 | 2020-11-06 | 东南大学 | Heater economic regulation method based on data driving and mechanism modeling state monitoring |
| CN112460577A (en) * | 2020-11-02 | 2021-03-09 | 国电汉川发电有限公司 | Water level adjusting method and system for high-pressure heater |
| CN113154360A (en) * | 2021-05-13 | 2021-07-23 | 镇江裕太防爆电加热器有限公司 | Water level switching method of intelligent high-pressure heater for nuclear power |
| CN114034033A (en) * | 2021-10-30 | 2022-02-11 | 国家能源集团华北电力有限公司廊坊热电厂 | Heater liquid level control method and terminal for heat-engine plant feed water regenerative system |
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| CN110940205A (en) * | 2019-12-16 | 2020-03-31 | 广西电网有限责任公司电力科学研究院 | Real-time control system and method for operation efficiency of horizontal high-pressure heater |
| CN110940206A (en) * | 2019-12-16 | 2020-03-31 | 广西电网有限责任公司电力科学研究院 | Real-time control system and method for end difference of low-pressure heater with drainage cooling area |
| CN111897203A (en) * | 2020-06-17 | 2020-11-06 | 东南大学 | Heater economic regulation method based on data driving and mechanism modeling state monitoring |
| CN112460577A (en) * | 2020-11-02 | 2021-03-09 | 国电汉川发电有限公司 | Water level adjusting method and system for high-pressure heater |
| CN113154360A (en) * | 2021-05-13 | 2021-07-23 | 镇江裕太防爆电加热器有限公司 | Water level switching method of intelligent high-pressure heater for nuclear power |
| CN114034033A (en) * | 2021-10-30 | 2022-02-11 | 国家能源集团华北电力有限公司廊坊热电厂 | Heater liquid level control method and terminal for heat-engine plant feed water regenerative system |
| CN114034033B (en) * | 2021-10-30 | 2023-10-20 | 国家能源集团华北电力有限公司廊坊热电厂 | Liquid level control method and terminal for heater of water supply and heat recovery system of thermal power plant |
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