CN112963374A - Double-fed system-based boiler blower system of wet cooling unit - Google Patents
Double-fed system-based boiler blower system of wet cooling unit Download PDFInfo
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- CN112963374A CN112963374A CN202110374979.9A CN202110374979A CN112963374A CN 112963374 A CN112963374 A CN 112963374A CN 202110374979 A CN202110374979 A CN 202110374979A CN 112963374 A CN112963374 A CN 112963374A
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- 238000001816 cooling Methods 0.000 title claims abstract description 57
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 42
- 238000006243 chemical reaction Methods 0.000 claims abstract description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 12
- 239000003546 flue gas Substances 0.000 claims description 12
- 230000003584 silencer Effects 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 8
- 239000000779 smoke Substances 0.000 claims description 8
- 238000000746 purification Methods 0.000 claims description 7
- 239000000498 cooling water Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 238000006477 desulfuration reaction Methods 0.000 claims description 2
- 230000023556 desulfurization Effects 0.000 claims description 2
- 239000000428 dust Substances 0.000 claims description 2
- 230000001172 regenerating effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 3
- 230000001105 regulatory effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/004—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying driving speed
-
- 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
- F22D1/32—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines
- F22D1/34—Feed-water heaters, i.e. economisers or like preheaters arranged to be heated by steam, e.g. bled from turbines and returning condensate to boiler with main feed supply
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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
- F22D11/00—Feed-water supply not provided for in other main groups
- F22D11/02—Arrangements of feed-water pumps
- F22D11/06—Arrangements of feed-water pumps for returning condensate to boiler
-
- 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
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- 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
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
- F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L15/00—Heating of air supplied for combustion
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
A boiler blower system of a wet cooling unit based on a double-fed system comprises a water cooling tower, a boiler blower, a double-fed motor, a boiler, a chimney and the like. The invention changes the motor of the boiler blower of the wet cooling unit into a double-fed motor, and under the variable working condition, the rotating speed of the boiler blower is adjusted by the double-fed motor, so that the non-frequency-conversion simple fine online continuous speed adjustment of the boiler blower can be realized, and the invention has the advantages of high adjusting efficiency, high reliability and strong usability. The speed regulation range of the double-fed motor is set according to the accurate rotating speed range of the actual operation of the boiler blower of the wet cooling unit, so that the waste of regulation allowance is avoided, and the manufacturing cost is low. Through wet cooling unit boiler forced draught blower system implementation based on double-fed system, can satisfy all operation demands of boiler forced draught blower, improve boiler forced draught blower regulation efficiency and regulation security under the wide load application scene of future high frequency, energy-conserving potentiality is huge.
Description
Technical Field
The invention belongs to the field of power station boilers and steam turbine systems, and particularly relates to a double-fed system-based boiler blower system of a wet cooling unit.
Background
In recent years, the installed capacity of new energy electric power such as wind power, photovoltaic and hydropower in China is continuously and rapidly increased, and the installed capacity in service and under construction is the first in the world. New energy sources such as wind power and photovoltaic power provide a large amount of clean power for people, but on the other hand, the randomness and instability of generated output of the new energy sources also bring great challenges to the safe operation and power supply guarantee of a power system. From the current situation, the adjustment capability of the power system in China is difficult to completely adapt to the requirement of large-scale development and consumption of new energy, and the problems of wind abandonment, light abandonment and water abandonment are severe in some areas. In order to excavate the peak regulation potential of a thermal power generating unit, improve the thermal power operation flexibility of China and improve the new energy consumption capacity, the thermal power generating unit needs to operate under the working condition of wide-load and high-frequency load change, the power consumption rate of main auxiliary equipment of a power plant, such as a water pump, a fan and the like, is greatly improved, according to field test data, when the peak regulation of the unit is up to 30% of load, the power consumption rate of the plant is increased to about 10%, and the power supply efficiency is obviously reduced.
The driving power of a boiler blower of the wet cooling unit is high, and the wet cooling unit is an important electric energy consumer in a power plant. At present, when a wet cooling unit operates under variable working conditions, a boiler blower changes the shape of a performance curve of the boiler blower mainly by changing the installation angle of a movable blade, so that the working condition point is changed. The speed regulation method by changing the installation angle of the movable blades has high failure rate, for example, no instruction exists, and the current swings in a small amplitude; the blade is not controlled, and the current is greatly changed; idle stroke; no blade motion, etc. The adjusting mode is difficult to meet the operation requirement of frequent adjustment of the unit in the future application scene of high-frequency wide load.
Disclosure of Invention
The invention aims to provide a double-fed system-based boiler blower system of a wet cooling unit, which can meet the operation requirements of all working conditions of the boiler blower, reduce the plant power consumption rate, improve the regulation efficiency and the regulation safety of the boiler blower in future high-frequency wide-load application scenes and have huge energy-saving potential.
In order to achieve the purpose, the invention adopts the technical scheme that:
a double-fed system-based boiler blower system of a wet cooling unit comprises a water cooling tower, a circulating water pump, a chimney, a condensate pump, a condenser, a small steam turbine, a boiler induced draft fan, a flue gas purification device, a silencer, a boiler blower, a double-fed motor, a fan heater, an air preheater and a boiler;
the small steam turbine is coaxially connected with a boiler induced draft fan, and the double-fed motor is coaxially connected with a boiler blower;
the exhaust steam outlet of the small turbine and the turbine exhaust steam are connected to the steam inlet of the condenser, and the condensed water outlet of the condenser is connected to the heat recovery system through a condensed water pump; a circulating water outlet of the water cooling tower is connected to a circulating water inlet of the condenser, and the circulating water outlet of the condenser is connected to the circulating water inlet of the water cooling tower through a circulating water pump;
the outlet of the silencer is connected to the inlet of the air heater through a boiler blower, and the outlet of the air heater is connected to the air inlet of the boiler through an air preheater; the smoke outlet of the boiler is connected to the inlet of a boiler induced draft fan through an air preheater, and the outlet of the boiler induced draft fan is connected to a chimney through a smoke purifying device.
The invention is further improved in that the air heater is provided with a steam inlet and a steam outlet.
The invention is further improved in that the boiler blower of the wet cooling unit is driven by a double-fed motor.
The invention is further improved in that under each working condition, the rotating speed of the boiler blower is directly regulated by the double feed motor, and the performance curve of the boiler blower is changed, so that the working point of the boiler blower is changed, and the efficiency is kept unchanged when the rotating speed of the boiler blower is changed.
The invention is further improved in that the driving mode of the boiler blower is based on the electric driving of a double-fed system, when the speed regulation function of the double-fed motor fails, the double-fed motor can continue to operate at power frequency, the shape of the performance curve of the boiler blower is changed temporarily by adjusting the installation angle of the movable blade, so that the operating point is changed, the purpose of regulation is achieved, and the operating condition of the boiler blower is continuously regulated by the double-fed motor after the speed regulation function of the double-fed motor is recovered to be normal.
The invention is further improved in that the system can realize the non-frequency-conversion simple fine online continuous speed regulation of the boiler blower of the wet cooling unit, and the speed regulation range of the double-fed motor is set according to the accurate rotating speed range required by the actual operation of the boiler blower.
The invention is further improved in that exhaust steam of the small turbine driven by the boiler induced draft fan and exhaust steam of the turbine are both discharged to the condenser for cooling and condensation, and then are conveyed to the heat regenerative system through the condensate pump.
The invention has the further improvement that the circulating cooling water enters a water cooling tower to directly exchange heat with natural wind for cooling after cooling the exhaust steam and absorbing heat in the condenser, and the cooled circulating water is conveyed into the condenser through a circulating water pump to continuously cool the exhaust steam.
The invention has the further improvement that the flue gas in the boiler is conveyed to a flue gas purification device by a boiler induced draft fan through an air preheater for desulfurization, denitration and dust removal, and enters a chimney after the components of the flue gas reach the standard and is discharged into the atmosphere.
The invention is further improved in that the air is silenced by the silencer and then is conveyed by the boiler blower to enter the air heater, is primarily heated by the steam in the air heater and then enters the air preheater, and is heated by the flue gas in the air preheater and then enters the boiler.
Compared with the prior art, the invention changes the motor of the boiler blower into the double-fed motor, under different working conditions, the rotating speed of the boiler blower is directly adjusted through the double-fed motor, and the performance curve of the boiler blower is changed through changing the rotating speed, so that the working point of the boiler blower is changed, and the efficiency can be kept unchanged when the rotating speed is changed. When the double-fed motor speed regulation function is failed, the double-fed motor can continue to operate at the power frequency, can temporarily adapt to variable working conditions through the installation angle of the movable blade, and continues to adjust the operating conditions of the boiler blower by the double-fed motor after the speed regulation function of the double-fed motor is recovered to be normal. The speed regulation range of the double-fed motor is set according to the rotating speed range required by the actual operation of the boiler blower, and is not 0-100%, so that the waste of regulation allowance is avoided, and the manufacturing cost is low. The invention has the beneficial effects that:
(1) the method can meet all running states of the boiler blower of the wet cooling unit, improves the regulation efficiency and the regulation safety of the boiler blower in future high-frequency wide-load application scenes, and has huge energy-saving potential.
(2) The double-fed motor can directly adjust the rotating speed of the boiler blower of the wet cooling unit, the non-variable-frequency simple fine continuous speed regulation of the boiler blower of the wet cooling unit can be realized, and the adjusting efficiency is high.
(3) Compared with the original movable blade adjustment of a boiler blower, the double-fed system has the advantages of small occupied area, low manufacturing cost, high reliability, flexible operation, simplicity in operation and strong usability.
Drawings
Fig. 1 is a schematic diagram of a boiler blower system of a wet cooling unit based on a double-fed system.
Description of reference numerals:
1. the system comprises a cooling tower, 2, a circulating water pump, 3, a chimney, 4, a condensate pump, 5, a condenser, 6, a small steam turbine, 7, a boiler induced draft fan, 8, a flue gas purification device, 9, a silencer, 10, a boiler blower, 11, a double feed motor, 12, a fan heater, 13, an air preheater, 14 and a boiler.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, the double-fed system-based boiler blower system of the wet cooling unit provided by the invention comprises a cooling water tower 1, a circulating water pump 2, a chimney 3, a condensate pump 4, a condenser 5, a small steam turbine 6, a boiler induced draft fan 7, a flue gas purification device 8, a silencer 9, a boiler blower 10, a double-fed motor 11, a fan heater 12, an air preheater 13 and a boiler 14; the small steam turbine 6 is coaxially connected with a boiler induced draft fan 7, and the double feed motor 11 is coaxially connected with a boiler blower 10; the exhaust steam outlet and the turbine exhaust steam of the small turbine 6 are connected to the steam inlet of the condenser 5, and the condensed water outlet of the condenser 5 is connected to the heat recovery system through the condensed water pump 4; a circulating water outlet of the water cooling tower 1 is connected to a circulating water inlet of the condenser 5, and a circulating water outlet of the condenser 5 is connected to the circulating water inlet of the water cooling tower 1 through a circulating water pump 2; an air outlet of the silencer 9 is connected to an air inlet of a fan heater 12 through a boiler blower 10, and an air outlet of the fan heater 12 is connected to an air inlet of a boiler 14 through an air preheater 13; the smoke outlet of the boiler 14 is connected to the smoke inlet of the boiler induced draft fan 7 through the air preheater 13, and the smoke outlet of the boiler induced draft fan 7 is connected to the chimney 3 through the smoke purifying device 8.
Example 1
In a wet cooling unit provided with a boiler blower, the boiler blower is driven by a motor, and at present, when the unit changes working conditions, the shape of a performance curve of the boiler blower is changed mainly by changing the installation angle of a movable blade, so that a working condition point is changed. The speed regulation method by changing the installation angle of the movable blades has high failure rate, for example, the regulation is slow, and the current change is slow; no instruction is given, and the current swings in a small amplitude; the blade is not controlled, and the current is greatly changed; the blade adjusting opening has an idle stroke within a certain range; no blade motion, etc. The adjusting mode is difficult to meet the operation requirement of frequent adjustment of the unit in the future application scene of high-frequency wide load.
The motor of the boiler blower is changed into a double-fed motor, under various working conditions, the rotating speed of the boiler blower is directly regulated by the double-fed motor, and the performance curve of the boiler blower is changed, so that the working point of the boiler blower is changed, and the efficiency is kept unchanged when the rotating speed of the boiler blower is changed. When the double-fed motor speed regulation function is failed, the double-fed motor can continue to operate at the power frequency to drive the boiler blower, the variable working condition can be adapted temporarily by adjusting the angle of the movable blade, and the operation working condition of the boiler blower is continuously adjusted by the double-fed motor after the double-fed motor speed regulation function is recovered to be normal. The speed regulation range of the double-fed motor is set according to the accurate rotating speed range of the actual operation of the boiler blower of the wet cooling unit, which is not 0-100%, so that the waste of regulation allowance is avoided, and the manufacturing cost is low.
The boiler blower system of the wet cooling unit based on the double-fed system is flexible in operation, simple in operation, strong in availability and high in reliability.
And when the wet cooling unit normally operates, the operation mode of the boiler blower system of the wet cooling unit based on the double-fed system is adopted.
1. When the speed regulation function of the double-fed system is normal, the running rotating speed of the boiler blower 10 is regulated through the double-fed motor 11 so as to adapt to the regulation requirement of variable working conditions.
2. When the speed regulation function of the double-fed motor system fails, the double-fed motor 11 can continue to operate at the power frequency to drive the boiler blower 10, the adjustment requirement of the variable working condition can be met by adjusting the installation angle of the movable blade of the boiler blower 10 temporarily, and the operation working condition of the boiler blower 10 is continuously adjusted by the double-fed motor 11 after the speed regulation function of the double-fed motor 11 is recovered to be normal.
Through the implementation of a boiler blower system of a wet cooling unit based on a double-fed system, all operation requirements of the boiler blower can be met, the regulation efficiency and the regulation safety of the boiler blower of the wet cooling unit under the future high-frequency wide-load application scene are improved, and the boiler blower system has huge energy-saving potential.
Although the invention has been described in detail hereinabove with respect to a general description and specific embodiments thereof, it will be apparent to those skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (10)
1. A double-fed system-based boiler blower system of a wet cooling unit is characterized by comprising a water cooling tower (1), a circulating water pump (2), a chimney (3), a condensate pump (4), a condenser (5), a small steam turbine (6), a boiler induced draft fan (7), a flue gas purification device (8), a silencer (9), a boiler blower (10), a double-fed motor (11), a fan heater (12), an air preheater (13) and a boiler (14);
the small steam turbine (6) is coaxially connected with a boiler induced draft fan (7), and the double-fed motor (11) is coaxially connected with a boiler blower (10);
the exhaust steam outlet and the turbine exhaust steam of the small turbine (6) are connected to the steam inlet of the condenser (5), and the condensed water outlet of the condenser (5) is connected to the heat recovery system through the condensed water pump (4); a circulating water outlet of the water cooling tower (1) is connected to a circulating water inlet of the condenser (5), and a circulating water outlet of the condenser (5) is connected to a circulating water inlet of the water cooling tower (1) through a circulating water pump (2);
the outlet of the silencer (9) is connected to the inlet of a fan heater (12) through a boiler blower (10), and the outlet of the fan heater (12) is connected to the air inlet of a boiler (14) through an air preheater (13); the smoke outlet of the boiler (14) is connected to the inlet of a boiler induced draft fan (7) through an air preheater (13), and the outlet of the boiler induced draft fan (7) is connected to the chimney (3) through a smoke purification device (8).
2. The double-fed system-based wet cooling unit boiler blower system according to claim 1, characterized in that the air heater (12) is provided with a steam inlet and a steam outlet.
3. A double fed system based boiler blower system for wet cooling units, according to claim 1, characterized in that the boiler blower (10) of the wet cooling unit is driven by a double fed motor (11).
4. The system for the boiler blower of the wet cooling unit based on the double-fed system as claimed in claim 3, characterized in that under each working condition, the rotating speed of the boiler blower (10) is directly adjusted by the double-fed motor (11), the performance curve of the boiler blower (10) is changed, so that the working point of the boiler blower (10) is changed, and when the rotating speed of the boiler blower (10) is changed, the efficiency is kept unchanged.
5. The boiler blower system of the wet cooling unit based on the double-fed system as claimed in claim 1, characterized in that the boiler blower (10) is driven by electric power based on the double-fed system, when the speed regulation function of the double-fed motor (11) fails, the double-fed motor (11) can continue to operate at power frequency, the operating point is changed by temporarily changing the shape of the performance curve of the boiler blower (10) by adjusting the installation angle of the movable blade, so as to achieve the purpose of adjustment, and after the speed regulation function of the double-fed motor (11) is recovered to normal, the operating condition of the boiler blower (10) is continuously adjusted by the double-fed motor (11).
6. The double-fed system-based wet cooling unit boiler blower system is characterized in that the system can realize non-frequency-conversion simple fine online continuous speed regulation of the wet cooling unit boiler blower (10), and the speed regulation range of the double-fed motor (11) is set according to the accurate rotating speed range required by the actual operation of the boiler blower (10).
7. The double-fed system-based wet cooling unit boiler blower system of claim 1, characterized in that exhaust steam of a small turbine (6) driven by a boiler induced draft fan (7) and exhaust steam of the turbine are discharged to a condenser (5) for cooling and condensing, and then are conveyed to a regenerative system through a condensate pump (4).
8. The double-fed system-based wet cooling unit boiler blower system of claim 1, wherein the circulating cooling water is conveyed into the water cooling tower (1) through the circulating water pump (2) to directly exchange heat with natural air for cooling after cooling the exhaust steam and absorbing heat in the condenser (5), and the cooled circulating water enters the condenser (5) to continue cooling the exhaust steam.
9. The double-fed system-based wet cooling unit boiler blower system of claim 1, characterized in that flue gas in the boiler (14) is conveyed to the flue gas purification device (8) through the air preheater (13) by the boiler induced draft fan (7) for desulfurization, denitration and dust removal, and enters the chimney (3) after the flue gas components reach the standard and is discharged into the atmosphere.
10. A double fed system based wet cooling unit boiler blower system according to claim 1, characterized in that the air is fed into the air heater (12) by the boiler blower (10) after being silenced by the silencer (9), and is fed into the air preheater (13) after being preliminarily heated by steam in the air heater (12), and is fed into the boiler (14) after being heated by the flue gas in the air preheater (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110374979.9A CN112963374A (en) | 2021-04-08 | 2021-04-08 | Double-fed system-based boiler blower system of wet cooling unit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110374979.9A CN112963374A (en) | 2021-04-08 | 2021-04-08 | Double-fed system-based boiler blower system of wet cooling unit |
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| CN112963374A true CN112963374A (en) | 2021-06-15 |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201582846U (en) * | 2010-01-05 | 2010-09-15 | 华北电力科学研究院有限责任公司 | Combustion control system of lignite unit |
| CN104100314A (en) * | 2014-07-16 | 2014-10-15 | 西安热工研究院有限公司 | Steam discharge waste heat utilization system of condensing type small turbine for driving induced draft fan |
| CN109469523A (en) * | 2018-12-29 | 2019-03-15 | 西安西热节能技术有限公司 | A kind of system entering furnace fresh air using condensing-type small steam turbine exhaust steam waste-heat |
-
2021
- 2021-04-08 CN CN202110374979.9A patent/CN112963374A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201582846U (en) * | 2010-01-05 | 2010-09-15 | 华北电力科学研究院有限责任公司 | Combustion control system of lignite unit |
| CN104100314A (en) * | 2014-07-16 | 2014-10-15 | 西安热工研究院有限公司 | Steam discharge waste heat utilization system of condensing type small turbine for driving induced draft fan |
| CN109469523A (en) * | 2018-12-29 | 2019-03-15 | 西安西热节能技术有限公司 | A kind of system entering furnace fresh air using condensing-type small steam turbine exhaust steam waste-heat |
Non-Patent Citations (1)
| Title |
|---|
| 李琼: "高压绕线转子无刷双馈电动机变频调速系统研究", 《《中国优秀博硕士学位论文全文数据库(硕士) 工程科技Ⅱ辑》》 * |
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Application publication date: 20210615 |
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