CN207741138U - Prevent the gas-tight sealing that flue gas pours in down a chimney - Google Patents
Prevent the gas-tight sealing that flue gas pours in down a chimney Download PDFInfo
- Publication number
- CN207741138U CN207741138U CN201721620567.4U CN201721620567U CN207741138U CN 207741138 U CN207741138 U CN 207741138U CN 201721620567 U CN201721620567 U CN 201721620567U CN 207741138 U CN207741138 U CN 207741138U
- Authority
- CN
- China
- Prior art keywords
- air
- gas
- baffle door
- flue gas
- chimney
- Prior art date
- 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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- Chimneys And Flues (AREA)
Abstract
The utility model belongs to environmental protection technical field, more particularly to a kind of gas-tight sealing for preventing flue gas from pouring in down a chimney.A kind of gas-tight sealing for preventing flue gas from pouring in down a chimney proposed has air seal baffle door；The setting of air seal baffle door is exported in boiler induced-draft fan, forms the structure that flue gas partition is realized using the high pressure gas that air blower provides；The switch of air seal baffle door is controlled by its internal actuator；Actuator is arranged with boiler induced-draft fan interlocking；Multiple air seal baffle doors of corresponding more boiler induced-draft fans setting connect air blower by same air pipeline respectively；Air pipeline is tightly connected by the seal chamber of air butterfly valve and each air seal baffle door respectively；Air butterfly valve is realized by connecting rod with corresponding actuator and is interlocked.The utility model realizes the purpose for preventing operation boiler smoke from pouring in down a chimney, and ensure that the normal operation of boiler.
Description
Technical field
The utility model belongs to environmental protection technical field, is filled more particularly to a kind of air seal for preventing flue gas from pouring in down a chimney
It sets.
Background technology
In many thermal power plants and many coal-burning boilers, mostly more boiler parallel runnings have operation boiler, have spare
Or the boiler of maintenance.Currently, baffle door or the included shutter regulating valve of air-introduced machine are installed in boiler induced-draft fan exhaust pass, when
Equipment before boiler shutdown or air-introduced machine, air-introduced machine（Flue, deduster）It is used for blocking from parallel running boiler when overhauling, safeguarding
Flue gas, with ensure boilers in parallel normal operation and air-introduced machine or air-introduced machine before equipment（Flue, deduster）Maintenance, dimension
Shield；But at present due to after air-introduced machine smoke-gas wet desulfurization equipment in " the more stoves of a tower " operational mode, public one into tower flue, with
The reduction for wet desulphurization smoke discharging temperature causes the decline of chimney pull out force, and the resistance from desulfurizing tower（1500Pa), increase
There is flue gas and flows backwards phenomenon in the resistance of flue, i.e., since during stoppage in transit boiler, the elastic sealing strip of air-introduced machine baffle door occurs
Poorly sealed or air-introduced machine caused by stress deformation carries the imprecision of shutter regulating valve, and flue gas enters stoppage in transit boiler system；
Cigarette is leaked in Ventilator Room and in stove, brings damage to the inspection of stoppage in transit boiler system equipment, difficulty is brought to overhaul of the equipments and maintenance personnel,
Seriously endanger maintenance and the health of human body and safety of maintenance personnel（Because containing flue dust, carbon monoxide and a variety of in boiler smoke
Pernicious gas）, equipment or personnel safety accident can be caused when serious.
Invention content
In order to overcome this flue gas to pour in down a chimney phenomenon, the utility model proposes a kind of air seal for preventing flue gas from pouring in down a chimney dresses
It sets.
The utility model adopts the following technical scheme that solve above-mentioned technical problem：
A kind of gas-tight sealing for preventing flue gas from pouring in down a chimney, the gas-tight sealing have air seal baffle door；
The air seal baffle door setting is exported in boiler induced-draft fan, is formed and is realized flue gas using the high pressure gas that air blower provides
The structure of partition；The switch of the air seal baffle door is controlled by its internal actuator；The actuator and pot
The interlocking setting of stove air-introduced machine；Multiple air seal baffle doors of corresponding more boiler induced-draft fans setting pass through same air hose respectively
Road connects air blower；The air pipeline is sealed by the seal chamber of air butterfly valve and each air seal baffle door respectively
Connection；The air butterfly valve is realized by connecting rod with corresponding actuator and is interlocked；The valve rod of air butterfly valve and baffle door
Door-hinge chain control, remains at：Butterfly valve is closed when baffle door is opened, and butterfly valve is opened when baffle door is closed.
It is provided with silencer in the air blower.
The utility model proposes a kind of gas-tight sealing for preventing flue gas from pouring in down a chimney, it is mutual with controller using air butterfly valve
The structure design of lock, when air seal baffle door is opened, air butterfly valve is closed, and seal gas is disconnected with air seal baffle door
It opens；When air seal baffle door is closed, air butterfly valve is opened；Seal gas and air seal flapper door seal channel unicom,
Seal gas pressure is higher than flue gas pressure, and flue gas cannot will not be leaked by air seal baffle door, flue gas；It realizes anti-
The purpose that only operation boiler smoke pours in down a chimney ensures the normal operation for having transported row boiler, ensures the equipment safety of stoppage in transit boiler and stops
Transport overhaul of the equipments and the service personnel's personal safety of boiler system.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram that air blower is connect with air seal baffle door in the utility model.
In figure：1, muffler, 2, air blower, 3, air pipeline, 4, air butterfly valve, 5, air seal baffle door, 6, connecting rod,
7, actuator, 8, boiler blower, 9, inlet flue duct, 10, exhaust pass, 11, common flue.
Specific implementation mode
The utility model is further illustrated with reference to the accompanying drawings and examples；The embodiment is with four boiler induced-draft fans
Example prevents flue gas flowing backward device principle from illustrating the air seal, and four boiler induced-draft fans export a public exhanst gas outlet
Flue enters desulphurization system；
As shown in Figure 1 and Figure 2, a kind of gas-tight sealing for preventing flue gas from pouring in down a chimney, the gas-tight sealing, which has, to be set
Set the air seal baffle door 5 exported in boiler induced-draft fan；The structure of the air seal baffle door 5 using in the prior art at
Ripe structure, is arranged in the outlet of boiler induced-draft fan, a kind of device for separating flue gas, and the sealing of of baffle door 5 itself is
It is realized by the closure of resilient seal surface, the high pressure sealing air provided by air blower 2 may be implemented to make up elastic packing
Flue gas leakage between piece and catch caused by making or the deformation of welding stress；The air seal baffle door 5 is opened
Actuator 7 inside Guan Youqi is controlled；The actuator is arranged with the interlocking of boiler induced-draft fan 8；Corresponding more boilers draw
Multiple air seal baffle doors 5 that wind turbine 8 is arranged connect air blower 2 by same air pipeline 3 respectively；The air pipeline 3
It is tightly connected respectively by air butterfly valve 4 and the seal chamber of each air seal baffle door 5；The air butterfly valve 4 with
Corresponding actuator 7 is realized by connecting rod 6 and is interlocked；The valve rod of air butterfly valve 4 and the door-hinge chain control of baffle door 5, always
It is maintained at：Butterfly valve 4 is closed when baffle door 5 is opened, and butterfly valve 4 is opened when baffle door 5 is closed.
When boiler induced-draft fan is stopped transport, the actuator 7 of gas seal type baffle door, turns to closed state, in connecting rod 6
Under effect, seal gas butterfly valve 4 is opened simultaneously, thus pressure-air enters in the seal chamber of gas seal type baffle door 5, by
It is more than the flue gas pressures in common flue in high-pressure air pressure（Air pressure is 1.5-2 times of common flue flue gas pressures）,
To block flue gas by the possibility that is leaked between gas seal type baffle door valve plate sealing strip gap, even if between valve plate sealing strip gap
There is gas to pass through, that must be the pressure-air from air blower.Ensure that air-introduced machine outlet is preceding without boiler smoke, it can be to air inducing
Equipment before machine outlet（Air-introduced machine, deduster, economizer, boiler body etc.）Carry out security maintenance and maintenance.Air blower is set
Muffler 1 is to bring noise to eliminate air blower work, is more advantageous to environmental protection, protects the physical and mental health of staff.
Claims (2)
1. a kind of gas-tight sealing for preventing flue gas from pouring in down a chimney, the gas-tight sealing has air seal baffle door；Its
It is characterized in that：The air seal baffle door setting is exported in boiler induced-draft fan, forms the high pressure gas provided using air blower
Body realizes the structure of flue gas partition；The switch of the air seal baffle door is controlled by its internal actuator；Described
Actuator is arranged with boiler induced-draft fan interlocking；Multiple air seal baffle doors of corresponding more boiler induced-draft fans setting pass through respectively
Same air pipeline connects air blower；The air pipeline passes through air butterfly valve and each air seal baffle door respectively
Seal chamber is tightly connected；The air butterfly valve is realized by connecting rod with corresponding actuator and is interlocked；The valve rod of air butterfly valve
With the door-hinge chain control of baffle door.
2. a kind of gas-tight sealing for preventing flue gas from pouring in down a chimney as described in claim 1, it is characterised in that：The air blower
Inside it is provided with silencer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721620567.4U CN207741138U (en) | 2017-11-29 | 2017-11-29 | Prevent the gas-tight sealing that flue gas pours in down a chimney |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721620567.4U CN207741138U (en) | 2017-11-29 | 2017-11-29 | Prevent the gas-tight sealing that flue gas pours in down a chimney |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207741138U true CN207741138U (en) | 2018-08-17 |
Family
ID=63116280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721620567.4U Expired - Fee Related CN207741138U (en) | 2017-11-29 | 2017-11-29 | Prevent the gas-tight sealing that flue gas pours in down a chimney |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207741138U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111664466A (en) * | 2020-06-03 | 2020-09-15 | 滁州滁能热电有限公司 | Flue gas backflow and release device for one tower and multiple furnaces in wet desulphurization environment-friendly equipment |
-
2017
- 2017-11-29 CN CN201721620567.4U patent/CN207741138U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111664466A (en) * | 2020-06-03 | 2020-09-15 | 滁州滁能热电有限公司 | Flue gas backflow and release device for one tower and multiple furnaces in wet desulphurization environment-friendly equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180817 Termination date: 20181129 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |