CN203223933U - Thermal power plant air blower inlet bypass apparatus - Google Patents
Thermal power plant air blower inlet bypass apparatus Download PDFInfo
- Publication number
- CN203223933U CN203223933U CN2012202742375U CN201220274237U CN203223933U CN 203223933 U CN203223933 U CN 203223933U CN 2012202742375 U CN2012202742375 U CN 2012202742375U CN 201220274237 U CN201220274237 U CN 201220274237U CN 203223933 U CN203223933 U CN 203223933U
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- China
- Prior art keywords
- air
- inlet
- baffle plate
- air inlet
- power plant
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 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
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Abstract
Provided is a thermal power plant air blower inlet bypass apparatus, which can reduce resistance and facilitate maintenance, and comprises a casing, a coarse filtration net and an adjustable baffle plate. The thermal power plant air blower inlet bypass apparatus is characterized in that an inlet of an air blower is provided with a parallel connection air inlet; the baffle plate is disposed at the air inlet, and the opening degree of the baffle plate is adjustable; a transmission device is disposed outside of the casing for controlling the movement of the baffle plate. In the running process of a thermal power plant, when the extraneous temperature rises, the bypass apparatus is opened, and air flows in from a bypass air inlet, and thereby the flowing resistance of a steam air heater heat exchange tube bundle to the air at the inlet can be greatly reduced, and electric energy of the air blower can be saved. When temperature is quite low, the steam air heater is in use, and the baffle plate at the air inlet of the bypass apparatus can be closed. When the steam air heater is at fault, the steam air heater can be maintained only by opening the bypass air inlet without stopping the machine. Accordingly, the normal operation of a generating set can be guaranteed, and continuous operation of the set can be ensured, and breakdown loss due to fault can be prevented.
Description
Technical field
The utility model relates to thermal power plant a kind of device that installs additional on the pressure fan air inlet of steam air heater is installed, keep the original equipment safe operation and energy-saving and cost-reducing aspect very big benefit is arranged.
Background technology
Because China's northern territory winter temperature is low, power plant's operating provisions, temperature are lower than 20 when spending, and should enable the steam air heater of primary and secondary air import department assembling.Steam air heater generally is the vapour-gas heat exchanger of bundled tube, by Steam Heating entrance cold air.The existence of pressure fan air inlet place steam air heater has increased the flow resistance in air channel, so has just increased pressure fan work energy consumption.And when steam air heater takes place to stop up or leaks, all be to make blower fan out of service under the general situation, enter steam air heater inside and handle that each processing all can have certain influence to unit load, has a strong impact on the operation of the normal continous-stable of unit.
Summary of the invention
Can there be following two aspect problems in common pressure fan entrance, one, and temperature raises, and when not needing the inlet air preheating, the heat-exchanging tube bundle of steam air heater can produce flow resistance to pipeline, has increased the pressure fan power consumption.Its two, the steam air heater fault needs shutdown maintenance, has influenced continuously normal operation of unit.The utility model device can reduce the intake air flow resistance significantly, and the normal operation that can keep unit when overhauling steam air heater.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of thermal power plant pressure fan entrance shunting device, comprise casing, coarse strainer and fender plate, it is characterized in that: the pressure fan porch is provided with an air inlet in parallel, the air inlet place is provided with baffle plate, baffle opening is adjustable, and casing is provided with the action of transmission device control baffle plate outward.At original pressure fan entrance a bypass air inlet device is installed, this device is furnished with coarse strainer and fender plate.This shunting device is according to the situation in space, working site, can with original air inlet symmetric arrangement or arranged stacked.Temperature raises, and when not needing steam air heater work, regulates bypass air inlet baffle plate, makes air enter from the bypass air inlet, flows to next workshop section, has so just reduced the mobile obstacle of steam air heater heat-exchanging tube bundle to inlet air greatly, has saved the electric energy of pressure fan.When the steam air heater fault, only need open the bypass air inlet, just can guarantee the air quantity just commonly used of unit, unnecessary shutdown is keeped in repair again, has so just ensured the continuous normal duty operation of unit, has avoided shutting down the loss that brings.
The beneficial effects of the utility model are; can raise in air themperature; when steam air heater is not worked; reduce it in whole air intake link; resistance to air flows and produces reduces the pressure fan power consumption, perhaps when operation troubles appears in steam air heater; do not need shutdown maintenance yet, kept unit normal operation continuously.This utility model apparatus structure is simple, operation easily, and easily manufactured, cost is low.
Description of drawings
Fig. 1 is the utility model bypass air inlet and former air inlet symmetric arrangement schematic diagram
Fig. 2 is the utility model bypass air inlet and former air inlet arranged superposed schematic diagram
Among Fig. 1,1. side plate, 2. upper cover plate, 3. lower cover, 4. coarse strainer, 5. air inlet fender plate, 6. baffle plate is regulated transmission mechanism, 7. fans entrance, the right side was for containing the air inlet of steam air heater originally, and the left side is the utility model shunting device.
Among Fig. 2, the upper end is the utility model shunting device, and the lower end was for containing the air inlet of steam air heater originally.
The specific embodiment
When winter temperature hangs down, close the bypass air inlet baffle plate in left side among Fig. 1, air all enters from the right side, is heated by steam air heater, enters next active section then.Also can close the bypass air inlet baffle plate that is positioned at the upper end in utility model shown in Figure 2, air enters from the lower end, is heated by steam air heater, enters next active section then.
Summer temperature raises, and when steam air heater is not worked, opens left side air inlet baffle plate among the figure .1, makes most of air enter from the air port, left side, because the inner no heat-exchanging tube bundle of left side air inlet, the flow resistance that air enters next workshop section subtracts down greatly.Perhaps also can be in utility model shown in Figure 2, the bypass air inlet baffle plate of open upper end makes most of air enter next workshop section from the upper end air inlet, has so just reduced air flow resistance.Because the arrangement form of above air inlet changes, and greatly reduces the pressure fan energy consumption.
Steam air heater breaks down when needing repairing, and opens the baffle plate of bypass air inlet, just can ensure the wind demand just commonly used of unit, does not influence the normal operation continuously of unit.
Claims (1)
1. thermal power plant's pressure fan entrance shunting device, comprise casing, coarse strainer and fender plate, it is characterized in that: the pressure fan porch is provided with an air inlet in parallel, and the air inlet place is provided with baffle plate, baffle opening is adjustable, and casing is provided with the action of transmission device control baffle plate outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202742375U CN203223933U (en) | 2012-06-12 | 2012-06-12 | Thermal power plant air blower inlet bypass apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202742375U CN203223933U (en) | 2012-06-12 | 2012-06-12 | Thermal power plant air blower inlet bypass apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203223933U true CN203223933U (en) | 2013-10-02 |
Family
ID=49250936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202742375U Expired - Fee Related CN203223933U (en) | 2012-06-12 | 2012-06-12 | Thermal power plant air blower inlet bypass apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203223933U (en) |
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2012
- 2012-06-12 CN CN2012202742375U patent/CN203223933U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131002 Termination date: 20140612 |