CN211600773U - Boiler smoke discharging and dust removing interactive bypass induced air system - Google Patents
Boiler smoke discharging and dust removing interactive bypass induced air system Download PDFInfo
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- CN211600773U CN211600773U CN201922307039.9U CN201922307039U CN211600773U CN 211600773 U CN211600773 U CN 211600773U CN 201922307039 U CN201922307039 U CN 201922307039U CN 211600773 U CN211600773 U CN 211600773U
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Abstract
The utility model discloses an interactive bypass induced air system of dust removal is discharged fume to boiler, include by the boiler, a plurality of groups power plant thermodynamic system that constitute with the supporting dust remover of boiler, and install between each dust remover and chimney and from the draught fan of distribution damper, characterized by sets up flue auxiliary interface between every draught fan and dust remover, arranges public flue through flue auxiliary interface, and sets up the intercommunication gate valve in the public flue between every group thermodynamic system, makes all draught fans be connected through public flue with all thermodynamic systems. The design of the interactive auxiliary common flue enables the boiler to directly stop the main induced draft fan to operate during ignition, especially blowing out, maintenance and cooling, and only other induced draft fans which normally work are additionally used for discharging smoke, so that the energy-saving effect is achieved under the condition of completely meeting the requirements of ignition and cooling, and the interactive auxiliary common flue has important practical significance.
Description
Technical Field
The utility model relates to a steam power plant boiler energy-saving application technique, especially a boiler smoke discharging and dust removing interactive bypass induced air system.
Background
The arrangement of the general thermal power plant boilers is more than two, the spacing distance between the boilers is 20-30 meters, each boiler needs to be provided with an induced draft fan, the exhaust smoke of the existing boiler is directly sent into a main flue by the induced draft fan and collected to a chimney, and then the arrangement of auxiliary measures such as various purification, waste heat utilization and the like is carried out. If the patent publication number of the inventor is CN110388651A, a boiler smoke exhaust bridge-type bypass fine filtering device comprises a main smoke exhaust pipe connected between a dust remover and a chimney, wherein an extraction type main flue smoke filtering net is arranged in the main smoke exhaust pipe, a bridge-passing bypass flue is connected in parallel beside the main smoke exhaust flue, and an auxiliary fan and the extraction type bypass filtering net are arranged in the bridge-passing bypass flue. When the filter screen is loaded on the main exhaust flue, the original exhaust amount is ensured through the arrangement of the gap bridge bypass flue, harmful substances such as residual trace sulfur dioxide and the like after the main dust remover is equipped are effectively intercepted, and the purpose of replacing the filter screen without stopping the machine can be realized. And so on.
However, the main function of the induced draft fan is not only smoke discharging and dust removing, but also the task of cooling the hearth during shutdown. In reality, all boilers are not ignited and shut down to be overhauled simultaneously, and the ignition and the shutdown are often carried out in a single stage. Because the air volume of the full-load induced draft fan for boiler smoke discharge can meet the requirement by 70 percent, and the air volume of about 10 percent can meet the requirement during ignition and cooling, according to the configuration of the existing equipment, the induced draft fan can work normally even if the opening degree of an air brake of the induced draft fan is adjusted to be minimum in the ignition and cooling processes, and the energy consumption is obviously wasted.
Disclosure of Invention
The utility model aims at solving the above problem, provide a boiler smoke exhaust and dust removal interactive bypass induced air system, it has disposable investment, and is with low costs, energy-conserving effect is obvious, easy operation control's characteristics.
The technical problem of the utility model is mainly solved by the following technical scheme: the interactive bypass induced draft system for smoke discharge and dust removal of the boiler comprises a plurality of groups of thermal systems of a power plant, each group of thermal systems is composed of a boiler and dust collectors matched with the boiler, and induced draft fans are installed between the dust collectors and a chimney and are respectively provided with an air brake.
In the aforementioned interactive bypass induced draft system for smoke removal and dust removal of a boiler, preferably, the common flue is a circular air duct.
In the above boiler smoke-discharging and dust-removing interactive bypass induced draft system, preferably, a dust-cleaning mechanism is arranged in the common flue.
In the interactive bypass induced draft system for removing dust from boiler exhaust gas, preferably, a temperature monitor is provided at one end of the common flue facing the dust remover.
In the aforementioned interactive bypass induced draft system for removing dust from boiler exhaust gas, preferably, the damper includes an opening degree adjustment motor controller.
In the interactive bypass induced draft system for smoke removal and dust removal of the boiler, preferably, a communicating gate valve arranged in the common flue is provided with an opening degree adjusting motor controller.
The technical scheme is designed in a thermodynamic system of a power plant consisting of a boiler and dust collectors matched with the boiler, a common flue is rearranged by utilizing an induced air pipeline arranged between each dust collector and a chimney according to the practical situation, the common flue is communicated with each induced draft fan and each dust collector in an interactive mode, only a flue auxiliary interface is simply additionally arranged between each induced draft fan and each dust collector, then a communicating gate valve is arranged in the common flue between each thermodynamic system, all the induced draft fans and all the common flues can be communicated, smoke exhaust selection application in the process of ignition and cooling operation can be formed between any two systems by utilizing the common flue, and the traditional one-to-one induced air smoke exhaust selection is abandoned, so that the energy-saving purpose is achieved.
Furthermore, the common flue is made into a circular air pipe, and the turning parts are designed by adopting a large circular arc or an inclination angle so as to ensure that the flow resistance is minimum. The dust cleaning mechanism is arranged in the public flue to clean the flue in time. A temperature monitor is arranged on the public flue, so that the smoke exhaust temperature value can be timely mastered, and the waste of the work of the draught fan on time can be avoided. The communication gate valve in air brake and the common flue all is equipped with aperture adjusting motor controller, effectively adjusts according to particular case.
Compared with the prior art, the beneficial effects of utility model are that: the design of the interactive auxiliary common flue enables the boiler to directly stop the main induced draft fan to operate during ignition, especially blowing out, maintenance and cooling, and only other induced draft fans which normally work are additionally used for discharging smoke, so that the energy-saving effect is achieved under the condition of completely meeting the requirements of ignition and cooling, and the interactive auxiliary common flue has important practical significance.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of fig. 1.
Fig. 3 is a structural diagram of an arrangement embodiment of the present invention.
Fig. 4 is a system diagram of an embodiment of the present invention.
In the figure: 1. the device comprises a dust remover, 2. an induced draft fan, 3. a main collecting flue, 4. a chimney, 5. an air brake, 6. a common flue and 7. a gate valve.
A. And a variable frequency common frequency control room.
Detailed Description
The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.
Referring to fig. 1 and 2, in the boiler smoke-discharging and dust-removing interactive bypass induced air system of the embodiment, three groups of thermal systems of power plants arranged in an equidistant regular triangle are taken as an example, each group of thermal systems of the power plants comprises a boiler and a dust remover 1 matched with the boiler, an induced draft fan 2 is arranged between each dust remover 1 and a chimney 4, each induced draft fan 2 is provided with an air brake 5, and each air brake 5 comprises an opening-degree adjusting motor controller; the chimney 4 is converged with each induced draft fan 2 through the main collecting flue 3.
A flue auxiliary interface is arranged between each induced draft fan 2 and the dust remover 1, a common flue 6 is arranged between 3 flue auxiliary interfaces, a communicating gate valve 7 is arranged in the common flue between each group of thermodynamic systems, and the communicating gate valve 7 is provided with an opening adjusting motor controller. All induced draft fans 2 are thereby connected to all thermodynamic systems via a common flue 6.
FIG. 3 is a boiler arrangement mode of a linear arrangement, and three boiler discharge flues are connected by a common flue 6.
The common flues 6 are all designed into circular air pipes, the dust cleaning mechanism is arranged in the common flue 6 between every two groups of thermodynamic systems, and one end of the common flue 6 towards the dust remover 1 is provided with a temperature monitor.
Taking three 800kw high-pressure induced draft fans 2 as an example for further explanation, as shown in fig. 4, each high-pressure induced draft fan 2 is provided with an air brake 5, an opening degree adjusting motor controller is configured for the air brake 5, two-by-two communicated common flues 6 are arranged between flues between the 3 high-pressure induced draft fans 2 and the three dust collectors 1, a gate valve 7 is arranged in the common flue 6 between each two dust collectors 1, and the gate valve 7 is also provided with an opening degree adjusting motor controller. Three 800kw high-pressure induced draft fans 2 are connected to a 10kv power supply and a centralized control room through a variable frequency common frequency control room. The air brake 5, the gate valve 7 and the controller provided with the opening adjusting motor are connected with a 380v power supply and a centralized control room in a unified way.
When the three boilers normally work, the power consumption of the three 800kw high-pressure induced draft fans 2 is about 70% of the rated power under the premise of remaining. If two of the three induced draft fans 2 normally operate, one induced draft fan 2 needs to be shut down for maintenance, the common method is to start the induced draft fan 2 corresponding to the shut down, the induced draft fan can be cooled within 30 hours, particularly in summer, maintenance personnel can enter the furnace for operation for a longer time, the rated power of the induced draft fan 2 used for cooling at the moment is still 800kw, the air volume required by actual cooling is only 10% of the conventional air volume, and even if the air lock 5 is adopted for regulation and control, the motor of the induced draft fan works as usual. By using the interactive bypass induced draft system, the residual air of the induced draft fan 2 corresponding to the boiler which normally works can be utilized to obtain 10% of air quantity without opening the induced draft fan 2 corresponding to blowing-out, and as long as any one of the gate valves 7 adjacent to the induced draft fan is opened in the common flue 6, so that the energy consumption is greatly reduced. It is worth mentioning that the utilization of the residual air does not affect the use of the boiler in normal operation.
Further, if two boilers normally work and one needs to be shut down for maintenance, two paths of gate valves 7 can be opened, and the air output is adjusted through the opening adjusting motor controller, so that consumption is reduced.
During ignition, the operation can be finished by only about 10% of air volume, and by using the system, the residual air in the bypass can be obtained only by controlling the gate valve 7, so that the special induced draft fan 2 is not required to be started, and the effective consumption reduction is also obtained.
Still further, according to this scheme principle, can carry out public flue 6 to 3 above boiler power plant thermodynamic systems and arrange, once only drop into, simple structure is with lower costs, especially selects the control easily.
The above embodiments are descriptions of the utility model, not limitations of the utility model, and any structure after simple transformation and the like of the utility model all belong to the protection scope of the utility model.
Claims (6)
1. The utility model provides an interactive bypass induced air system of boiler smoke removal, include by the boiler, a plurality of groups power plant thermodynamic system of constituteing with the supporting dust remover (1) of boiler, and install between each dust remover and chimney (4) and draught fan (2) from joining in marriage air brake (5), characterized by sets up flue auxiliary interface between every draught fan and dust remover, arrange public flue (6) through flue auxiliary interface, and set up intercommunication gate valve (7) in the public flue between every thermodynamic system of group, make all draught fans be connected through public flue with all thermodynamic systems.
2. A boiler smoke removal interactive bypass air induction system according to claim 1, characterized in that said common flue (6) is a circular air duct.
3. The interactive bypass air induction system for removing the dust in the smoke of the boiler as claimed in claim 1, characterized in that a dust removing mechanism is arranged in the common flue (6).
4. The interactive bypass air induction system for removing dust from boiler exhaust fumes according to claim 1, characterized in that a temperature monitor is arranged at one end of the common flue (6) towards the dust remover (1).
5. The interactive bypass draft system for removing dust from boiler exhaust smoke according to claim 1, wherein said damper (5) comprises an opening adjusting motor controller.
6. The interactive bypass air induction system for removing dust and fume in boiler of claim 1, characterized in that the communicating gate valve (7) arranged in the common flue is provided with an opening degree adjusting motor controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922307039.9U CN211600773U (en) | 2019-12-20 | 2019-12-20 | Boiler smoke discharging and dust removing interactive bypass induced air system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922307039.9U CN211600773U (en) | 2019-12-20 | 2019-12-20 | Boiler smoke discharging and dust removing interactive bypass induced air system |
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| Publication Number | Publication Date |
|---|---|
| CN211600773U true CN211600773U (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922307039.9U Active CN211600773U (en) | 2019-12-20 | 2019-12-20 | Boiler smoke discharging and dust removing interactive bypass induced air system |
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| Country | Link |
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| CN (1) | CN211600773U (en) |
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2019
- 2019-12-20 CN CN201922307039.9U patent/CN211600773U/en active Active
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20230518 Address after: Room 1209, Building 3, Chuangzhi Green Valley Development Center, No. 788 Hongpu Road, Shangcheng District, Hangzhou City, Zhejiang Province, 310000 Patentee after: Hangzhou Jinyiharmonic Environmental Protection Technology Co.,Ltd. Address before: Room 304, Building B, No. 899 Huanshan Road, Economic and Technological Development Zone, Huzhou City, Zhejiang Province, 313008 Patentee before: Huzhou Xingxin flame environmental protection technology consulting service Co.,Ltd. |
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