CN111810926A - Device for regulating temperature of final-stage reheater and operation method thereof - Google Patents
Device for regulating temperature of final-stage reheater and operation method thereof Download PDFInfo
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- CN111810926A CN111810926A CN202010784624.2A CN202010784624A CN111810926A CN 111810926 A CN111810926 A CN 111810926A CN 202010784624 A CN202010784624 A CN 202010784624A CN 111810926 A CN111810926 A CN 111810926A
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 9
- 239000000779 smoke Substances 0.000 claims description 44
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 26
- 239000003546 flue gas Substances 0.000 claims description 26
- 238000010438 heat treatment Methods 0.000 claims description 20
- 239000002893 slag Substances 0.000 claims description 6
- 229910052783 alkali metal Inorganic materials 0.000 claims description 4
- 150000001340 alkali metals Chemical class 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000010881 fly ash Substances 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims description 3
- 230000003750 conditioning effect Effects 0.000 claims 4
- 230000004888 barrier function Effects 0.000 claims 2
- 238000010977 unit operation Methods 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 4
- 238000004880 explosion Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 238000013021 overheating Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000008642 heat stress Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
-
- 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
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/02—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G1/00—Steam superheating characterised by heating method
- F22G1/02—Steam superheating characterised by heating method with heat supply by hot flue gases from the furnace of the steam boiler
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J13/00—Fittings for chimneys or flues
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Abstract
The invention discloses a device for regulating the temperature of a final-stage reheater and an operation method thereof, comprising a controller, a rotary motor, a driving wheel, a driven wheel, a hydraulic cylinder piston rod, a smoke-proof baffle plate and a power box for providing electric energy, wherein the smoke-proof baffle plate is positioned between a high-temperature superheater in a horizontal flue of a boiler and the final-stage reheater, an output shaft of the rotary motor is connected with the driving wheel, the driving wheel is matched with the driven wheel, the driven wheel is connected with the upper end of the smoke-proof baffle plate, one end of the hydraulic cylinder piston rod is matched with the hydraulic cylinder, the other end of the hydraulic cylinder piston rod is inserted into the horizontal flue of the boiler and then connected with the smoke-proof baffle plate, the controller is connected with a control end of a piston cylinder and a control end of the rotary motor, the device, the safe reliability of the unit operation is improved.
Description
Technical Field
The invention belongs to the technical field of temperature regulation of heating surfaces of coal-fired boilers, and relates to a temperature regulation device of a final-stage reheater and an operation method thereof.
Background
In recent years, the power industry develops rapidly, and supercritical and ultra-supercritical thermal power generating units become active main units in China. With the development of power station boilers towards high parameters and large capacity, the problems of steam temperature deviation and overheating of a heating surface caused by unbalanced combustion in the boiler become more serious day by day, and the problems become one of the main problems influencing the safe and stable operation of a unit. Meanwhile, due to the change of a power utilization structure, the civil electric quantity is continuously increased, the peak-to-valley difference of a power grid is gradually increased, the thermal power generating unit takes more peak regulation tasks while carrying basic load, and the frequent load lifting brings adverse effects to the regulation of the steam temperature.
Uneven distribution of flue gas flow velocity and flue gas temperature in a boiler heating surface area can cause uneven heat absorption of heating surfaces such as a platen superheater, a high-temperature superheater and a final-stage reheater, and overhigh steam temperature can accelerate creep deformation of metal materials of the heat exchanger, so that extra thermal stress is generated on the pipe walls of the superheater and the reheater, the service life of equipment is shortened, and overtemperature or even pipe explosion of the heating surfaces can be caused after long-term operation; the steam temperature is too low, which causes the steam humidity of the last stage of the steam turbine to increase, the erosion of the blades of the steam turbine is aggravated, and the water hammer phenomenon occurs in severe cases. In order to control the temperature of the pipe wall within a reasonable range, the temperature of main steam and the temperature of reheated steam are generally required to be reduced, and meanwhile, when the deviation of the temperature of smoke on two sides of a boiler is large, the amount of desuperheating water cannot be reasonably controlled, so that the overall operation economy of a unit is reduced.
The method for regulating the steam temperature mainly comprises two main types of steam side regulation and flue gas side regulation, the regulation mode of the steam temperature of the final-stage reheater usually mainly adopts the flue gas side regulation, the common method comprises flue gas recirculation, flue baffle separation and flame center position change, and meanwhile, the reheater accident water spray desuperheater can be arranged for emergency accident working conditions, quick variable load working conditions or other unstable working conditions. The adjusting method has the problems of different degrees in the operation process of the existing unit: if the gas temperature is adjusted by adopting a flue separating baffle method, the viscosity is too high, the opening degree of the baffle is in nonlinear relation with the gas temperature, and the baffle only has good adjusting effect within a certain opening degree range; the adjusting method for changing the flame center has high sensitivity, small time lag and low precision, and various adverse factors cause difficulty in adjusting the final reheating steam temperature in the process of quickly changing the load of the unit.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a device for regulating the temperature of a final-stage reheater and an operation method thereof, wherein the device and the operation method thereof can effectively relieve the phenomenon that the heating surface of the final-stage reheater is stained and slagging in the long-term high-load operation state of a boiler, and improve the operation safety and reliability of a unit.
In order to achieve the purpose, the device for adjusting the temperature of the final reheater comprises a controller, a rotary motor, a driving wheel, a driven wheel, a hydraulic cylinder piston rod, a smoke shielding baffle and a power box for providing electric energy, wherein the smoke shielding baffle is positioned between a high-temperature superheater in a horizontal flue of a boiler and the final reheater, an output shaft of the rotary motor is connected with the driving wheel, the driving wheel is matched with the driven wheel, the driven wheel is connected with the upper end of the smoke shielding baffle, one end of the hydraulic cylinder piston rod is matched with the hydraulic cylinder, the other end of the hydraulic cylinder piston rod is inserted into the horizontal flue of the boiler and then connected with the smoke shielding baffle, and the controller is connected with a control end of.
An output shaft of the rotating motor is connected with the driving wheel through a first connecting rod.
The driven wheel is connected with the upper end of the smoke shielding baffle through a second connecting rod.
The smoke shielding baffle and the connecting position of the hydraulic cylinder piston rod and the horizontal flue of the boiler are all wrapped with heat insulation material layers.
The driving wheel is matched with the driven wheel through threads.
The tip of pneumatic cylinder piston rod is provided with the ear seat, and the ear seat is connected with the upper end of keeping out the cigarette baffle.
The rotating motor is fixed on the outer wall of the horizontal flue of the boiler through the power box.
The method for operating the device for temperature regulation of the final reheater according to the invention comprises the following steps:
when the slag bonding of the final-stage reheater is serious, the controller controls the hydraulic cylinder to work, the hydraulic cylinder drives a piston rod of the hydraulic cylinder to extend out, the piston rod of the hydraulic cylinder drives a smoke shielding baffle to fall to the front windward side of the final-stage reheater, high-temperature flue gas is shielded by the smoke shielding baffle, convective heat exchange between the final-stage reheater and the high-temperature flue gas is reduced, flying ash particles and molten alkali metal in the flue gas are prevented from being attached to the pipe wall of the heating surface of the final-stage reheater, and the contamination and slag bonding of the heating;
when steam temperature deviation on two sides of the final-stage reheater is larger than a preset value, the controller controls the hydraulic cylinder to work, the hydraulic cylinder drives a piston rod of the hydraulic cylinder to extend out, the piston rod of the hydraulic cylinder drives the smoke shielding baffle to fall to the front windward side of the final-stage reheater, then the rotary motor is controlled to work, the rotary motor drives the driving wheel to rotate, the driving wheel drives the driven wheel to rotate, the driven wheel drives the smoke shielding baffle to rotate in the horizontal flue, an included angle between the smoke shielding baffle and the flue gas incoming flow direction is changed, so that the convective heat exchange quantity of the final-stage reheater and high-temperature flue gas is adjusted, the outlet temperature of the final-stage reheater is adjusted.
The invention has the following beneficial effects:
when the device for regulating the temperature of the final-stage reheater and the operation method thereof are operated in detail, when the final-stage reheater is seriously slagging, the hydraulic cylinder pushes the piston rod of the hydraulic cylinder to extend out, the smoke shielding baffle plate falls to the front windward side of the final-stage reheater, high-temperature flue gas is shielded by the smoke shielding baffle plate, the convective heat exchange between the final-stage reheater and the high-temperature flue gas is reduced, fly ash particles and molten alkali metal in the flue gas are prevented from being attached to the pipe wall of the heating surface of the final-stage reheater, the pollution and slagging of the heating surface of the final-stage reheater are reduced, and the phenomenon of the pollution and slagging of the heating surface of the final-. In addition, when steam temperature deviation on two sides of the final-stage reheater is overlarge, the rotary motor drives the smoke shielding baffle to rotate in the horizontal flue, an included angle between the smoke shielding baffle and the incoming flow direction of flue gas is changed, the convection heat exchange quantity between the final-stage reheater and high-temperature flue gas is adjusted, then the outlet temperature of the final-stage reheater is adjusted, the water spray quantity of accident desuperheating water of the final-stage reheater is reduced, the economical efficiency of a boiler is improved, meanwhile, smoke temperature deviation and flow field unevenness on two sides of a hearth are reduced, the phenomenon of pipe explosion frequency caused by local metal overheating and overtemperature of the final-stage reheater is avoided, and.
Drawings
FIG. 1 is a view of the present invention in a set position;
FIG. 2 is a schematic structural view of the present invention;
fig. 3 is a schematic diagram of the operation of the present invention.
Wherein, 1 is an economizer, 2 is a furnace water wall, 3 is a low-temperature superheater, 4 is a screen superheater, 5 is a high-temperature superheater, 6 is a low-temperature reheater, 7 is a final-stage reheater, 81 is a power box, 82 is a rotating motor, 83 is a driving wheel, 84 is a driven wheel, 85 is a hydraulic cylinder, 86 is a hydraulic cylinder piston rod, 87 is an ear seat, and 88 is a smoke shielding baffle plate.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
referring to fig. 1 and 2, a in fig. 1 is the present invention, and the device for adjusting the temperature of the final reheater according to the present invention includes a controller, a rotating electrical machine 82, a driving wheel 83, a driven wheel 84, a hydraulic cylinder 85, a hydraulic cylinder piston rod 86, a smoke blocking plate 88, and a power box 81 for supplying electrical energy, wherein the smoke blocking plate 88 is located between the high temperature superheater 5 and the final reheater 7 in the horizontal flue of the boiler, an output shaft of the rotating electrical machine 82 is connected to the driving wheel 83, the driving wheel 83 is engaged with the driven wheel 84, the driven wheel 84 is connected to an upper end of the smoke blocking plate 88, one end of the hydraulic cylinder piston rod 86 is engaged with the hydraulic cylinder 85, the other end of the hydraulic cylinder piston rod 86 is inserted into the horizontal flue of the boiler and then connected to the smoke blocking plate 88, and the controller.
An output shaft of the rotating motor 82 is connected with the driving wheel 83 through a first connecting rod; the driven wheel 84 is connected with the upper end of the smoke baffle 88 through a second connecting rod; the smoke shielding baffle 88 and the connecting position of the hydraulic cylinder piston rod 86 and the boiler horizontal flue are wrapped with heat insulation material layers; the driving wheel 83 is matched with the driven wheel 84 through threads; an ear seat 87 is arranged at the end part of the hydraulic cylinder piston rod 86, and the ear seat 87 is connected with the upper end of the smoke shielding baffle 88; the rotary motor 82 is fixed to the outer wall of the horizontal flue of the boiler through a power box 81.
The method for operating the device for temperature regulation of the final reheater according to the invention comprises the following steps:
high-temperature flue gas generated after fuel combustion firstly transfers heat to a hearth water-cooled wall 2 and a screen superheater 4, then enters a vertical shaft flue after sequentially passing through a high-temperature superheater 5 and a final reheater 7 by a horizontal flue, a partition wall in the vertical shaft flue divides the flue into a front parallel flue and a rear parallel flue, a low-temperature reheater 6 is arranged in the front flue, a low-temperature superheater 3 and an economizer 1 are arranged in the rear flue, and a smoke shielding baffle plate 8 is positioned between the high-temperature superheater 5 and the final reheater 7 in the horizontal flue;
in the normal operation process of the boiler, the pipe wall of the final-stage reheater 7 has no overtemperature phenomenon, the steam temperature deviation at the outlet of the final-stage reheater 7 is in a design range, and a device for regulating the temperature of the final-stage reheater is not required to be put into use under the condition that the heating surface of the final-stage reheater 7 is not seriously polluted and slag-bonded;
when the boiler runs at high load for a long time, because the average heat load in the boiler is large and the heat load value is preset, when the slag bonding of the final reheater 7 is serious, the hydraulic cylinder 85 is controlled to work, the hydraulic cylinder 85 drives the hydraulic cylinder piston rod 86 to extend out, the hydraulic cylinder piston rod 86 drives the smoke shielding baffle 88 to fall to the front windward side of the final reheater 7, high-temperature flue gas is shielded by the smoke shielding baffle 88, the convection heat exchange between the final reheater 7 and the high-temperature flue gas is reduced, fly ash particles and molten alkali metal in the flue gas are prevented from being attached to the pipe wall of the heating surface of the final reheater 7, and the contamination and slag bonding of the heating surface of the; when the pipe wall of the final-stage reheater 7 is over-temperature, the pipe wall over-temperature phenomenon is relieved through the opening degree of the smoke shielding baffle 88;
when the boiler is in variable load or deep peak regulation operation, the flame fullness in the hearth is not high, and because the final reheaters 7 on two sides of the uneven heat load distribution easily generate the problems of heat deviation, unbalanced heat stress and the like, the pipe wall of a heating surface is easily cracked due to long-term heat deviation, and local metal overheating and overtemperature, even pipe explosion are caused in serious conditions. When the steam temperature deviation on the two sides of the final reheater 7 is too large, the hydraulic cylinder 85 is controlled to work, the hydraulic cylinder 85 drives the hydraulic cylinder piston rod 86 to extend out, the hydraulic cylinder piston rod 86 drives the smoke shielding baffle 88 to fall to the front windward side of the final reheater 7, then the rotary motor 82 is controlled to work, the rotary motor 82 drives the driving wheel 83 to rotate, the driving wheel 83 drives the driven wheel 84 to rotate, the driven wheel 84 drives the smoke shielding baffle 88 to rotate in the horizontal flue, the included angle between the smoke shielding baffle 88 and the flue gas inflow direction is changed, so that the convection heat exchange quantity between the final reheater 7 and high-temperature flue gas is adjusted, the outlet temperature of the final reheater 7 is adjusted, the final stage desuperheating water spraying quantity of the final reheater 7 is.
According to practice, the invention can effectively keep the heating surface clean, reduce the convection heat exchange quantity of the heating surface, ensure the safety of the heating surface, improve the safe and stable operation time of the boiler and improve the efficiency of the unit.
Claims (8)
1. A temperature adjusting device of a final-stage reheater is characterized by comprising a controller, a rotating motor (82), a driving wheel (83), a driven wheel (84), a hydraulic cylinder (85), a hydraulic cylinder piston rod (86), a smoke shielding baffle plate (88) and a power box (81) for providing electric energy, the smoke shielding baffle (88) is positioned between the high-temperature superheater (5) and the final-stage reheater (7) in the horizontal flue of the boiler, an output shaft of the rotating motor (82) is connected with the driving wheel (83), the driving wheel (83) is matched with the driven wheel (84), the driven wheel (84) is connected with the upper end of the smoke shielding baffle (88), one end of a hydraulic cylinder piston rod (86) is matched with the hydraulic cylinder (85), the other end of the hydraulic cylinder piston rod (86) is inserted into the horizontal flue of the boiler and then is connected with the smoke shielding baffle (88), and the controller is connected with the control end of the piston cylinder (85) and the control end of the rotating motor (82).
2. The final reheater temperature regulating apparatus according to claim 1, characterized in that the output shaft of the rotary electric machine (82) is connected to the drive wheel (83) by a first link.
3. The final reheater temperature conditioning apparatus of claim 2 wherein the driven pulley (84) is connected to the upper end of the smoke barrier (88) by a second link.
4. The final reheater temperature conditioning apparatus of claim 1 wherein the smoke barrier (88) and the connection between the hydraulic cylinder piston rod (86) and the boiler horizontal flue are coated with a layer of insulation material.
5. The final reheater temperature conditioning apparatus of claim 1 wherein the drive pulley (83) is threadably engaged with the driven pulley (84).
6. The final reheater temperature regulating apparatus according to claim 1, characterized in that the end of the hydraulic cylinder piston rod (86) is provided with a lug (87), and the lug (87) is connected to the upper end of a smoke baffle (88).
7. The apparatus for temperature regulation of a final stage reheater according to claim 1, wherein the rotary electric machine (82) is fixed to an outer wall of the horizontal flue of the boiler through a power supply box (81).
8. A method of operating a final reheater temperature conditioning apparatus as recited in claim 1, comprising the steps of:
when the slag bonding of the final-stage reheater (7) is serious, the controller controls the hydraulic cylinder (85) to work, the hydraulic cylinder (85) drives a hydraulic cylinder piston rod (86) to extend out, the hydraulic cylinder piston rod (86) drives a smoke shielding baffle (88) to fall to the front windward side of the final-stage reheater (7), high-temperature flue gas is shielded through the smoke shielding baffle (88), the convection heat exchange between the final-stage reheater (7) and the high-temperature flue gas is reduced, fly ash particles and molten alkali metal in the flue gas are prevented from being attached to the pipe wall of the heating surface of the final-stage reheater (7), and the slag bonding of the heating surface of the final-stage reheater (7);
when the steam temperature deviation of two sides of the final-stage reheater (7) is larger than a preset value, the controller controls the hydraulic cylinder (85) to work, the hydraulic cylinder (85) drives a piston rod (86) of the hydraulic cylinder to extend out, the piston rod (86) of the hydraulic cylinder drives the smoke shielding baffle (88) to fall to the front windward side of the final-stage reheater (7), then the rotary motor (82) is controlled to work, the rotary motor (82) drives a driving wheel (83) to rotate, the driving wheel (83) drives a driven wheel (84) to rotate, the driven wheel (84) drives the smoke shielding baffle (88) to rotate in a horizontal flue, the included angle between the smoke shielding baffle (88) and the incoming flow direction of flue gas is changed, so that the heat convection heat exchange quantity between the final-stage reheater (7) and high-temperature flue gas is adjusted, the outlet temperature of the final-stage reheater (7) is adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010784624.2A CN111810926A (en) | 2020-08-06 | 2020-08-06 | Device for regulating temperature of final-stage reheater and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010784624.2A CN111810926A (en) | 2020-08-06 | 2020-08-06 | Device for regulating temperature of final-stage reheater and operation method thereof |
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| Publication Number | Publication Date |
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| CN111810926A true CN111810926A (en) | 2020-10-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010784624.2A Pending CN111810926A (en) | 2020-08-06 | 2020-08-06 | Device for regulating temperature of final-stage reheater and operation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944323A (en) * | 2020-12-31 | 2021-06-11 | 大唐郓城发电有限公司 | 630 ℃ double reheat boiler three-flue control method |
| CN113280359A (en) * | 2021-06-25 | 2021-08-20 | 西安热工研究院有限公司 | Method for reducing contamination of convection heating surface of n-shaped high-sodium coal boiler |
| CN114198737A (en) * | 2021-12-22 | 2022-03-18 | 华电新疆哈密煤电开发有限公司 | Ultra-supercritical boiler with flue gas flow field deviation eliminating device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208365520U (en) * | 2018-05-14 | 2019-01-11 | 华能国际电力股份有限公司海门电厂 | A kind of full load section reheating temperature intelligent controlling device |
| CN208886863U (en) * | 2018-08-09 | 2019-05-21 | 宁波方太厨具有限公司 | A kind of range hood with smoke barrier |
| CN212777273U (en) * | 2020-08-06 | 2021-03-23 | 华能国际电力股份有限公司 | Device for regulating temperature of final-stage reheater |
-
2020
- 2020-08-06 CN CN202010784624.2A patent/CN111810926A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208365520U (en) * | 2018-05-14 | 2019-01-11 | 华能国际电力股份有限公司海门电厂 | A kind of full load section reheating temperature intelligent controlling device |
| CN208886863U (en) * | 2018-08-09 | 2019-05-21 | 宁波方太厨具有限公司 | A kind of range hood with smoke barrier |
| CN212777273U (en) * | 2020-08-06 | 2021-03-23 | 华能国际电力股份有限公司 | Device for regulating temperature of final-stage reheater |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112944323A (en) * | 2020-12-31 | 2021-06-11 | 大唐郓城发电有限公司 | 630 ℃ double reheat boiler three-flue control method |
| CN113280359A (en) * | 2021-06-25 | 2021-08-20 | 西安热工研究院有限公司 | Method for reducing contamination of convection heating surface of n-shaped high-sodium coal boiler |
| CN114198737A (en) * | 2021-12-22 | 2022-03-18 | 华电新疆哈密煤电开发有限公司 | Ultra-supercritical boiler with flue gas flow field deviation eliminating device |
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