CN113154360A - Water level switching method of intelligent high-pressure heater for nuclear power - Google Patents
Water level switching method of intelligent high-pressure heater for nuclear power Download PDFInfo
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- CN113154360A CN113154360A CN202110520426.XA CN202110520426A CN113154360A CN 113154360 A CN113154360 A CN 113154360A CN 202110520426 A CN202110520426 A CN 202110520426A CN 113154360 A CN113154360 A CN 113154360A
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- water level
- heater
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- temperature
- nuclear power
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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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Monitoring And Testing Of Nuclear Reactors (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention discloses a water level switching method of an intelligent high-pressure heater for nuclear power, which comprises the following steps: the automatic water level adjustment protection system of the heater is released, and the system is switched to a manual water level adjustment system of the heater; keeping the load stable, and recording various parameters of the heater as initial parameters before adjustment; adjusting the set value of the liquid level controller to enable the water level to rise in a certain range, and properly adjusting according to the change condition of the drainage temperature; keeping the adjusted water level stable for 30min, and recording various parameters of the heater; gradually raising the water level until the water level display device is full of water or is about to be full of water, wherein the high water level of the heater is lower than the outlet of the superheated steam cooling section; the water level is reduced successively according to the method to observe whether the recoverability is good, if the initial adjusting point is at the geometric zero water level point, the water level is reduced to a low water level point for observation and then is recovered to the zero water level point; and after the field work is finished, the operation of the automatic water level adjustment and protection system of the heater is recovered.
Description
Technical Field
The invention relates to a water level switching method of an intelligent high-pressure heater for nuclear power.
Background
In the routine operation maintenance of the intelligent high-pressure heater for nuclear power, the reasonable water level is the key of the safe and economic operation of the heater, the over-low or over-high water level of the heater can have important influence on the safety and the economy of a unit, but in the operation process of the heater, the range value of the reasonable water level can be continuously changed according to factors such as temperature, effective heat transfer area, pipeline area and the like, so that a water level switching method of the heater is urgently needed to determine the reasonable range of the water level.
Disclosure of Invention
The invention aims to solve the defects of the prior art and provides a water level switching method of an intelligent high-pressure heater for nuclear power, which is convenient to connect.
A water level switching method of an intelligent high-pressure heater for nuclear power comprises the following steps:
(1) the automatic water level adjustment protection system of the heater is released, and the system is switched to a manual water level adjustment system of the heater;
(2) keeping the load stable, and recording various parameters of the heater as initial parameters before adjustment;
(3) adjusting the set value of the liquid level controller to enable the water level to rise in a certain range, and properly adjusting according to the change condition of the drainage temperature;
(4) keeping the adjusted water level stable for 30min, and recording various parameters of the heater;
(5) gradually raising the water level until the water level display device is full of water or is about to be full of water, wherein the high water level of the heater is lower than the outlet of the superheated steam cooling section;
(6) the water level is reduced successively according to the method to observe whether the recoverability is good, if the initial adjusting point is at the geometric zero water level point, the water level is reduced to a low water level point for observation and then is recovered to the zero water level point;
(7) and after the field work is finished, the operation of the automatic water level adjustment and protection system of the heater is recovered.
As a further improvement, the load steady state in step 2 means 80% or more of the rated load.
As a further improvement, the parameters of the heater in the step 2 comprise inlet water temperature, outlet water temperature, drainage outlet temperature, steam inlet pressure and temperature heater water level.
As a further improvement, the certain range in the step 3 is 25-50 mm.
As a further improvement, the parameters of the heater in the step 4 comprise inlet water temperature, outlet water temperature, drainage outlet temperature, steam inlet pressure and temperature heater water level.
Has the advantages that:
the invention has smart design and can simply and effectively measure the reasonable range of the water level of the heater, thereby ensuring that the heater can run more safely and economically.
Detailed Description
For the purpose of enhancing understanding of the present invention, the present invention will be further described in detail with reference to the following examples, which are provided for illustration only and are not to be construed as limiting the scope of the present invention.
A water level switching method of an intelligent high-pressure heater for nuclear power comprises the following steps:
(1) the automatic water level adjustment protection system of the heater is released, and the system is switched to a manual water level adjustment system of the heater;
(2) keeping the load stable, and recording various parameters of the heater as initial parameters before adjustment;
(3) adjusting the set value of the liquid level controller to enable the water level to rise in a certain range, and properly adjusting according to the change condition of the drainage temperature;
(4) keeping the adjusted water level stable for 30min, and recording various parameters of the heater;
(5) gradually raising the water level until the water level display device is full of water or is about to be full of water, wherein the high water level of the heater is lower than the outlet of the superheated steam cooling section;
(6) the water level is reduced successively according to the method to observe whether the recoverability is good, if the initial adjusting point is at the geometric zero water level point, the water level is reduced to a low water level point for observation and then is recovered to the zero water level point;
(7) and after the field work is finished, the operation of the automatic water level adjustment and protection system of the heater is recovered.
The load steady state in step 2 is 80% or more of the rated load.
Wherein, the parameters of the heater in the step 2 comprise inlet water temperature, outlet water temperature, drainage outlet temperature, steam inlet pressure and water level of the temperature heater.
Wherein, the certain range in the step 3 is 25-50 mm.
Wherein, the parameters of the heater in the step 4 comprise inlet water temperature, outlet water temperature, drain outlet temperature, steam inlet pressure and water level of the temperature heater.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A water level switching method of an intelligent high-pressure heater for nuclear power is characterized by comprising the following steps:
(1) the automatic water level adjustment protection system of the heater is released, and the system is switched to a manual water level adjustment system of the heater;
(2) keeping the load stable, and recording various parameters of the heater as initial parameters before adjustment;
(3) adjusting the set value of the liquid level controller to enable the water level to rise in a certain range, and properly adjusting according to the change condition of the drainage temperature;
(4) keeping the adjusted water level stable for 30min, and recording various parameters of the heater;
(5) gradually raising the water level until the water level display device is full of water or is about to be full of water, wherein the high water level of the heater is lower than the outlet of the superheated steam cooling section;
(6) the water level is reduced successively according to the method to observe whether the recoverability is good, if the initial adjusting point is at the geometric zero water level point, the water level is reduced to a low water level point for observation and then is recovered to the zero water level point;
(7) and after the field work is finished, the operation of the automatic water level adjustment and protection system of the heater is recovered.
2. The water level switching method of the intelligent high-pressure heater for nuclear power as claimed in claim 1, wherein the load steady state in step 2 is more than 80% of rated load.
3. The water level switching method of the intelligent high-pressure heater for nuclear power as claimed in claim 1, wherein the parameters of the heater in the step 2 include inlet water temperature, outlet water temperature, drain outlet temperature, steam inlet pressure and water level of the temperature heater.
4. The water level switching method of the intelligent high-pressure heater for nuclear power as claimed in claim 1, wherein the certain amplitude in step 3 is 25-50 mm.
5. The water level switching method of the intelligent high-pressure heater for nuclear power as claimed in claim 1, wherein the parameters of the heater in the step 4 include inlet water temperature, outlet water temperature, drain outlet temperature, steam inlet pressure and water level of the temperature heater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110520426.XA CN113154360A (en) | 2021-05-13 | 2021-05-13 | Water level switching method of intelligent high-pressure heater for nuclear power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110520426.XA CN113154360A (en) | 2021-05-13 | 2021-05-13 | Water level switching method of intelligent high-pressure heater for nuclear power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113154360A true CN113154360A (en) | 2021-07-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110520426.XA Pending CN113154360A (en) | 2021-05-13 | 2021-05-13 | Water level switching method of intelligent high-pressure heater for nuclear power |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU6871781A (en) * | 1980-03-26 | 1981-10-01 | Hitachi Limited | Method and system for controlling drain water level of feed- water heater |
| CN105402716A (en) * | 2015-10-12 | 2016-03-16 | 首钢水城钢铁（集团）有限责任公司 | Combined operation method for three low-voltage heaters |
| CN205102101U (en) * | 2015-11-16 | 2016-03-23 | 山西大同大学 | Novel liquid level automatic control device |
| CN106765047A (en) * | 2017-01-11 | 2017-05-31 | 中国神华能源股份有限公司 | Water level regulation method and apparatus |
| CN106871104A (en) * | 2016-09-12 | 2017-06-20 | 中国电力工程顾问集团华东电力设计院有限公司 | The high-pressure heater control system and its control method of double reheat fired power generating unit |
| CN110288135A (en) * | 2019-06-10 | 2019-09-27 | 华北电力大学 | A kind of hydrophobic water level energy conservation optimizing method of hyperbaric heating system |
-
2021
- 2021-05-13 CN CN202110520426.XA patent/CN113154360A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU6871781A (en) * | 1980-03-26 | 1981-10-01 | Hitachi Limited | Method and system for controlling drain water level of feed- water heater |
| CN105402716A (en) * | 2015-10-12 | 2016-03-16 | 首钢水城钢铁（集团）有限责任公司 | Combined operation method for three low-voltage heaters |
| CN205102101U (en) * | 2015-11-16 | 2016-03-23 | 山西大同大学 | Novel liquid level automatic control device |
| CN106871104A (en) * | 2016-09-12 | 2017-06-20 | 中国电力工程顾问集团华东电力设计院有限公司 | The high-pressure heater control system and its control method of double reheat fired power generating unit |
| CN106765047A (en) * | 2017-01-11 | 2017-05-31 | 中国神华能源股份有限公司 | Water level regulation method and apparatus |
| CN110288135A (en) * | 2019-06-10 | 2019-09-27 | 华北电力大学 | A kind of hydrophobic water level energy conservation optimizing method of hyperbaric heating system |
Non-Patent Citations (1)
| Title |
|---|
| 国动力工程学会主编: "《火力发电设备技术手册 第4卷 火电站系统与辅机 第10章 给水加热设备》", 31 December 1998, 北京：机械工业出版社 * |
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Application publication date: 20210723 |
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| RJ01 | Rejection of invention patent application after publication |