CN107270318B - A kind of driving structure of high-temperature flue gas baffle door - Google Patents
A kind of driving structure of high-temperature flue gas baffle door Download PDFInfo
- Publication number
- CN107270318B CN107270318B CN201710370803.XA CN201710370803A CN107270318B CN 107270318 B CN107270318 B CN 107270318B CN 201710370803 A CN201710370803 A CN 201710370803A CN 107270318 B CN107270318 B CN 107270318B
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- China
- Prior art keywords
- baffle door
- shaft
- transmission shaft
- flue gas
- temperature flue
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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.)
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Classifications
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- 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
- F23J13/08—Doors or covers specially adapted for smoke-boxes, flues, or chimneys
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power-Operated Mechanisms For Wings (AREA)
Abstract
The invention discloses a kind of driving structures of high-temperature flue gas baffle door, it is intended to solve gas baffle door drive mechanism open and close baffle door during stationarity and reliability it is bad, total weight is big, and heat-resisting ability is poor, and torque transmits bad deficiency.The invention include both ends be mounted on shell transmission shaft, be connected to two shafts of both ends of the drive shaft, rocker arm is fastenedly connected on transmission shaft; hinged drive link on rocker arm, the hinged baffle door of drive link, transmission shaft is hollow tubular structures; shaft is axially arranged with venthole; venthole is connected to transmission shaft inner cavity, and shaft ventilation outer end of hole connects inlet suction port, and another shaft ventilation outer end of hole connects air outlet adapter; transmission shaft outer wall is set with insulating layer, and inlet suction port blasts cooling gas；It is all connected with driving rocking handle in shaft, drives hinged hydraulic cylinder piston rod on rocking handle, baffle door upper end is rotatably hung on shell.
Description
Technical field
The present invention relates to a kind of gas baffle doors, more specifically, it relates to a kind of driving knot of high-temperature flue gas baffle door
Structure.
Background technique
Integrated gas-steam combined cycle power plant technology is high with generating efficiency, environmental protection is good, the method for operation is flexible, construction
Many advantages, such as period is short is widely used in the world.Gas baffle door is the key that Gas-steam Combined Cycle power plant sets
Standby, it couples gas turbine and waste heat boiler, play adjust unit flexibly run, quick start-stop, safeguard protection the effects of.In work
It needs to open or close gas baffle door during making, this movement is generally realized by driving structure, but is turned at present
The applicable temperature of axis is mostly at 600 degrees Celsius or less.With the continuous upgrading of combustion engine, the temperature and flow of flue gas are continuously improved,
The delivery temperature of current 9HA grades of combustion engine state-of-the-art in the world is close to 700 degrees Celsius, and the structure of existing gas baffle door is not
It is able to satisfy that temperature is higher, flow is bigger, Flow Field Distribution is more complicated, the worse working condition of working environment.Matched cigarette
Gas baffle door, transmission shaft should transmit bigger torque, adapt to higher temperature again, and weight is also small as far as possible, with
Reduce cost.And traditional driving structure weight is big, heat-resisting ability is poor, and torque transmitting is bad, and driving structure opens and closes
Stationarity and reliability are bad during baffle door.
Chinese patent notification number CN104197350B discloses a kind of gas baffle door drive mechanism, including is set to three
The front support seat of logical housing forward end and the rear support for being set to three-way body rear end, front support seat and rear support are coaxially set
It sets, front axle is rotatably connected on front support seat, rear axle is rotatably connected in rear support, both front axle, rear axle connecting pins are stretched
Enter in three-way body, torque tube both ends are respectively fixedly connected on rear axle, front axle, and reversible deflector is welded on torque tube.Work
When the transmission device that is connected by front axle end external force is delivered to front axle and torque tube is successively transmitted to by front axle, on torque tube
Fixed reversible deflector can be realized opening and closing operations.During this gas baffle door drive mechanism opens and closes baffle door
Stationarity and reliability are bad, and total weight is big, and heat-resisting ability is poor, and torque transmitting is bad.
Summary of the invention
Stationarity and reliability during the present invention overcomes gas baffle door drive mechanism opening and closing baffle door
Bad, total weight is big, and heat-resisting ability is poor, and torque transmits bad deficiency, provides a kind of high-temperature flue gas baffle door
Driving structure, gas baffle door open and close during stationarity and good reliability, total is light-weight, high temperature resistant
Ability is strong, and torque transmission effect is good.
In order to solve the above-mentioned technical problem, the invention adopts the following technical scheme: a kind of driving of high-temperature flue gas baffle door
Structure, the transmission shaft being mounted on shell including both ends, two shafts for being connected to both ends of the drive shaft, transmission shaft, which tightens, to be connected
Rocker arm is connect, hinged drive link on rocker arm, the hinged baffle door of drive link, transmission shaft is hollow tubular structures, and shaft is axially set
There is venthole, venthole is connected to transmission shaft inner cavity, shaft ventilation outer end of hole connection inlet suction port, outside another shaft venthole
End connection air outlet adapter, transmission shaft outer wall are set with insulating layer, and inlet suction port blasts cooling gas；Driving is all connected in shaft to shake
Handle drives hinged hydraulic cylinder piston rod on rocking handle, and baffle door upper end is rotatably hung on shell.
When gas baffle door needs to open or close, hydraulic cylinder works push driving rocking handle to turn by hydraulic cylinder piston rod
Dynamic, so that shaft, transmission shaft be driven to rotate together, the rocker arm being connected on transmission shaft, which rotates and passes through drive link, pushes baffle
Door rotation opens or closes.Cooling gas is blasted into venthole by inlet suction port, and cooling air enters transmission shaft inner cavity, another
It is exported after venthole in one shaft from air outlet adapter.Cooling gas constantly blasts, and cools down to shaft, transmission shaft, greatly
The heat-resisting ability for improving shaft and transmission shaft greatly, prevents metaboly.And transmission shaft outer wall is set with insulating layer, has
Effect is kept out external high temperature and is transmitted on transmission shaft, and the heat-resisting ability of transmission shaft is effectively improved.The transmission shaft weight of hollow structure
Amount is light.For transmission shaft by Driven by Hydraulic Cylinder, driving force is big, and driving process is steadily reliable, and using double shafts, patrilineal line of descent with only one son in each generation moving axis band
Shake arm rotation, transmission process is more steady reliable.The driving structure of this gas baffle door is light-weight, and heat-resisting ability is strong,
Effectively prevent shaft and transmission shaft in the course of work and metaboly occur, torque transmission effect is good, gas baffle door open and
Stationarity and good reliability during closing.
Preferably, the two sides of rocking handle is driven to be mounted on the limit bar for limiting driving rocking handle, two limits on shell
Position bar will drive rocking handle limit to rotate within the scope of 0-90 degree.Bar is limited for limiting driving rocking handle, to limit indirectly
Baffle door, and flue internal bypass side and boiler side are respectively mounted the limiting bracket for postive stop baffle door, limit bar and limit branch
Frame collective effect prevents impact of the unstable air-flow to baffle door, eliminates influence of the alternate stress to shaft and transmission shaft, simultaneously
It avoids baffle door aperture excessive, plays the double protection to equipment.
Preferably, baffle door upper end is hinged with flap seat, flap seat upper end is fastenedly connected support rail, and support rail is connected to
On shell.Baffle door is hinged on flap seat by upper end, and flap seat is fastenedly connected with support rail, the mistake that baffle door opens and closes
Upper end is rotated around flap seat in journey, and baffle door entirely moving, and flap seat bears the gravity of baffle door, and transmission shaft is substantially not by bending
Stress is only acted on by pure torsion, prevents deformation of transmission shaft, substantially prolongs the service life of transmission shaft.
Preferably, baffle door upper end turned position is coaxially connected with turntable, rocking bar is connected on turntable, rocking bar end is hinged
Drive rod, drive rod lower end connection valve position transmitter feedback rod.Turntable is driven to rotate together while baffle door rotates, thus logical
Rocking bar, drive rod drive feedback rod rotation are crossed, the angle signal that valve position transmitter turns over feedback rod is converted into electric signal conveying
To control system.To grasp the angle that baffle door turns in real time.
Preferably, position is mounted on travel switch above and below rocking bar, two 90 degree of travel switch phase phase differences are shaken
Bar rotates between two travel switches.After rocking bar touches travel switch during rotating, control system control hydraulic cylinder stops
It only works, prevents baffle door from opening or closing excess.
Preferably, transmission shaft includes the linkage section of intermediate changeover portion and both ends, the pipe thickness of changeover portion, which is less than, to be connected
The pipe thickness of section is connect, close interlude end is equipped with reaming on linkage section, transition chamfering is equipped between reaming and linkage section inner wall,
Close installation has bending resistance ring between reaming and changeover portion inner wall, and rocker arm is connected on linkage section close to intermediate fragment position.Linkage section
Bending resistance ring is installed with changeover portion link position, effectively increases the bending strength of link position.Being provided with for transition chamfering is conducive to
The smooth outflow of cooling gas, while fighting bending ring and being limited.The location and installation of bending resistance ring is convenient in the setting of reaming.Changeover portion
Pipe thickness be less than linkage section pipe thickness, improve the contact area of transmission shaft inner wall and cooling gas, improve biography
The volume of moving axis inner cavity is conducive to improve cooling effect, while alleviating the weight of transmission shaft.
Preferably, being equipped with reinforcing ring with rocker arm link position on transmission shaft outer wall.Being provided with for reinforcing ring is conducive to reduce
Local stress between rocker arm and transmission shaft improves the stress performance of transmission shaft.
Preferably, baffle door includes skeleton and the heat-insulating shield for being mounted on skeleton two sides, heat-insulating shield edge is respectively mounted
There is a two panels metal sealing piece flexible, on shell and metal sealing piece is correspondingly provided with sealing gland seat, and sealing gland seat is equipped with two sealing gears
Plate, two panels metal sealing piece are connected on sealing baffle respectively.
Baffle door good heat-insulation effect, for baffle door in standard-sized sheet or closed positions, metal sealing piece and sealing baffle form ring
Shape sealed passage, auxiliary blast air with air blower and are sealed, and prevent flue gas from revealing, and improve the thermal efficiency of unit.
Preferably, inlet suction port connects air blower by pipeline, air outlet adapter passes through pipeline joint noise reduction device.Pass through drum
Blower blasts air into transmission shaft and is cooled down, at low cost, easy to operate, and airflow is fast, good cooling results.Muffler
It is provided with and is conducive to reduce the noise generated in cooling gas flow process.
Preferably, connecting among driving rocking handle with shaft, the hinged hydraulic cylinder piston rod in rocking handle both ends is driven.In
The symmetrically arranged two Hydraulic Cylinders driving rocking handle rotation of the heart, pushing course are more steady reliable.
Compared with prior art, the beneficial effects of the present invention are: the driving structure of gas baffle door is light-weight, high temperature resistant energy
Power is strong, effectively prevents shaft and transmission shaft in the course of work and metaboly occurs, torque transmission effect is good, and gas baffle door is opened
Stationarity and good reliability during opening and closing.
Detailed description of the invention
Fig. 1 is external side view of the invention；
Fig. 2 is inner side elevational view of the invention；
Fig. 3 is main view of the invention；
Fig. 4 is the attachment structure schematic diagram of transmission shaft of the invention；
Fig. 5 is the attachment structure schematic diagram of drive link of the invention；
Fig. 6 is the attachment structure schematic diagram of metal sealing piece of the invention；
In figure: 1, transmission shaft, 2, shaft, 3, rocker arm, 4, drive link, 5, baffle door, 6, venthole, 7, inlet suction port,
8, air outlet adapter, 9, insulating layer, 10, driving rocking handle, 11, hydraulic cylinder piston rod, 12, flap seat, 13, support rail, 14, turntable,
15, rocking bar, 16, drive rod, 17, valve position transmitter feedback rod, 18, travel switch, 19, changeover portion, 20, linkage section, 21, expansion
Hole, 22, transition chamfering, 23, bending resistance ring, 24, reinforcing ring, 25, skeleton, 26, heat-insulating shield, 27, metal sealing piece, 28, sealing gland seat,
29, sealing baffle, 30, air blower, 31, muffler, 32, limit bar.
Specific embodiment
Below by specific embodiment, and in conjunction with attached drawing, technical scheme of the present invention is further described:
Embodiment: a kind of driving structure (referring to attached drawing 1 to 6) of high-temperature flue gas baffle door, including both ends are mounted on shell
On transmission shaft 1, be connected to two shafts 2 of both ends of the drive shaft, be fastenedly connected rocker arm 3 on transmission shaft, hingedly driven on rocker arm
Dynamic connecting rod 4, the hinged baffle door 5 of drive link, transmission shaft are hollow tubular structures, and shaft is axially arranged with venthole 6, venthole with
The connection of transmission shaft inner cavity, shaft ventilation outer end of hole connect inlet suction port 7, and another shaft ventilation outer end of hole connects air outlet adapter 8,
Transmission shaft outer wall is set with insulating layer 9, and inlet suction port blasts cooling gas；It is all connected with driving rocking handle 10 in shaft, drives rocking handle
Upper hinged hydraulic cylinder piston rod 11, baffle door upper end is rotatably hung on shell.It connect, drives with shaft among driving rocking handle
The hinged hydraulic cylinder piston rod in rocking handle both ends, two hydraulic cylinder center symmetric settings.The two sides of rocking handle are driven to be mounted on shell
For limiting the limit bar 32 of driving rocking handle, two limit bars will drive rocking handle limit to rotate within the scope of 0-90 degree.Baffle
Door upper end is hinged with flap seat 12, and flap seat upper end is fastenedly connected support rail 13, and support rail is connected on shell.Baffle door upper end
Turned position is coaxially connected with turntable 14, and rocking bar 15, the hinged drive rod 16 in rocking bar end, the connection of drive rod lower end are connected on turntable
Valve position transmitter feedback rod 17.Position is mounted on travel switch 18, two travel switch phase phase differences 90 above and below rocking bar
Degree, rocking bar rotate between two travel switches.Transmission shaft includes the linkage section 20 of intermediate changeover portion 19 and both ends, changeover portion
Pipe thickness is less than the pipe thickness of linkage section, and changeover portion is identical with linkage section outer diameter.Close to interlude end on linkage section
Equipped with reaming 21, transition chamfering 22 is equipped between reaming and linkage section inner wall, there is close installation between reaming and changeover portion inner wall
Bending resistance ring 23, rocker arm are connected on linkage section close to intermediate fragment position.Changeover portion and the docking of linkage section end are welded together.Transmission
On axis outer wall and rocker arm link position is equipped with reinforcing ring 24.Inlet suction port connects air blower 30 by pipeline, and air outlet adapter passes through
Pipeline joint noise reduction device 31.Baffle door includes skeleton 25 and the heat-insulating shield 26 for being mounted on skeleton two sides, and heat-insulating shield edge is equal
Two panels metal sealing piece 27 flexible is installed, on shell and metal sealing piece is correspondingly provided with sealing gland seat 28, and sealing gland seat is equipped with
Two sealing baffles 29, two panels metal sealing piece are connected on sealing baffle respectively.
When gas baffle door needs to open or close, hydraulic cylinder works push driving rocking handle to turn by hydraulic cylinder piston rod
Dynamic, so that shaft, transmission shaft be driven to rotate together, the rocker arm being connected on transmission shaft, which rotates and passes through drive link, pushes baffle
Door rotation opens or closes.Cooling gas is blasted into venthole by inlet suction port, and cooling air enters transmission shaft inner cavity, another
It is exported after venthole in one shaft from air outlet adapter.Cooling gas constantly blasts, and cools down to shaft, transmission shaft, greatly
The heat-resisting ability for improving shaft and transmission shaft greatly, prevents metaboly.And transmission shaft outer wall is set with insulating layer, has
Effect is kept out external high temperature and is transmitted on transmission shaft, and the heat-resisting ability of transmission shaft is effectively improved.The transmission shaft weight of hollow structure
Amount is light.For transmission shaft by Driven by Hydraulic Cylinder, driving force is big, and driving process is steadily reliable, and using double shafts, patrilineal line of descent with only one son in each generation moving axis band
Shake arm rotation, transmission process is more steady reliable.It drives turntable to rotate together while baffle door rotates, by rocking bar, passes
Lever drives feedback rod rotation, and the angle signal that valve position transmitter turns over feedback rod is converted into electric signal and is transported to control system
System, to grasp the angle that baffle door turns in real time；Simultaneously can manual rotational angle adjustment disk, the angle that turns over will be needed to set
It sets, angle of the control system according to setting, control valve position transmitter.When valve position transmitters sense goes to set angle to baffle door
After degree, control system control hydraulic cylinder stops working, so that baffle door be made to open in set angle position.The process of rocking bar rotation
In touch travel switch after, control system control hydraulic cylinder stop working, prevent baffle door from opening or closing excess.
Above-mentioned embodiment is only a preferred solution of the present invention, not the present invention is made in any form
Limitation, there are also other variations and modifications on the premise of not exceeding the technical scheme recorded in the claims.
Claims (9)
1. a kind of driving structure of high-temperature flue gas baffle door, characterized in that be mounted on transmission shaft on shell, respectively including both ends
Two shafts of both ends of the drive shaft are connected to, are fastenedly connected rocker arm on transmission shaft, hinged drive link on rocker arm, drive link is hinged
Baffle door, characterized in that transmission shaft is hollow tubular structures, and shaft is axially arranged with venthole, and venthole and transmission shaft inner cavity connect
Logical, shaft ventilation outer end of hole connects inlet suction port, and another shaft ventilation outer end of hole connects air outlet adapter, transmission shaft outer wall suit
There is insulating layer, inlet suction port blasts cooling gas；It is all connected with driving rocking handle in shaft, drives hinged hydraulic cylinder piston on rocking handle
Bar, baffle door upper end are rotatably hung on shell；Transmission shaft includes the linkage section of intermediate changeover portion and both ends, changeover portion
Pipe thickness is less than the pipe thickness of linkage section, is equipped with reaming close to interlude end on linkage section, reaming and linkage section inner wall it
Between be equipped with transition chamfering, close installation has a bending resistance ring between reaming and changeover portion inner wall, and rocker arm is connected on linkage section in
Between fragment position.
2. a kind of driving structure of high-temperature flue gas baffle door according to claim 1, characterized in that drive rocking handle on shell
Two sides be mounted on for limit driving rocking handle limit bar, two limit bars will drive rocking handle limit in 0-90 degree range
Interior rotation.
3. a kind of driving structure of high-temperature flue gas baffle door according to claim 1, characterized in that baffle door upper end is hinged
There is flap seat, flap seat upper end is fastenedly connected support rail, and support rail is connected on shell.
4. a kind of driving structure of high-temperature flue gas baffle door according to claim 1, characterized in that the rotation of baffle door upper end
Position is coaxially connected with turntable, and rocking bar, the hinged drive rod in rocking bar end, drive rod lower end connection valve position transmitter are connected on turntable
Feedback rod.
5. a kind of driving structure of high-temperature flue gas baffle door according to claim 4, characterized in that above and below rocking bar
Position is mounted on travel switch, and two 90 degree of travel switch phase phase differences, rocking bar rotates between two travel switches.
6. according to claim 1 to a kind of driving structure of high-temperature flue gas baffle door described in 5 any one, characterized in that pass
On moving axis outer wall and rocker arm link position is equipped with reinforcing ring.
7. according to claim 1 to a kind of driving structure of high-temperature flue gas baffle door described in 5 any one, characterized in that gear
Plate door includes skeleton and the heat-insulating shield for being mounted on skeleton two sides, and heat-insulating shield edge is mounted on two panels metal sealing flexible
Piece, on shell and metal sealing piece is correspondingly provided with sealing gland seat, and sealing gland seat is equipped with two sealing baffles, two panels metal sealing piece difference
It is connected on sealing baffle.
8. according to claim 1 to a kind of driving structure of high-temperature flue gas baffle door described in 5 any one, characterized in that into
Gas connector connects air blower by pipeline, and air outlet adapter passes through pipeline joint noise reduction device.
9. according to claim 1 to a kind of driving structure of high-temperature flue gas baffle door described in 5 any one, characterized in that drive
Shake and connect among handle with shaft, drives the hinged hydraulic cylinder piston rod in rocking handle both ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710370803.XA CN107270318B (en) | 2017-05-23 | 2017-05-23 | A kind of driving structure of high-temperature flue gas baffle door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710370803.XA CN107270318B (en) | 2017-05-23 | 2017-05-23 | A kind of driving structure of high-temperature flue gas baffle door |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107270318A CN107270318A (en) | 2017-10-20 |
| CN107270318B true CN107270318B (en) | 2019-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710370803.XA Active CN107270318B (en) | 2017-05-23 | 2017-05-23 | A kind of driving structure of high-temperature flue gas baffle door |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3626483A1 (en) * | 1986-08-05 | 1987-04-23 | Wet Waerme Energietechnik Gmbh | Chimney renewal insert |
| CN102022745A (en) * | 2009-09-16 | 2011-04-20 | 苏州新长光热能科技有限公司 | Novel open and close device of smoke evacuation pipe of aluminium cooling chamber |
| CN202227861U (en) * | 2011-08-04 | 2012-05-23 | 杭州杭锅通用设备有限公司 | Smoke baffle door driving transmission system |
| CN203421189U (en) * | 2013-07-26 | 2014-02-05 | 攀钢集团工程技术有限公司 | Counter weight type wind blockage valve |
| CN203704003U (en) * | 2013-11-28 | 2014-07-09 | 金荣森 | Desulfurization baffle door |
| TW201430289A (en) * | 2013-01-17 | 2014-08-01 | China Steel Corp | Waste gas suction device and cooling apparatus |
-
2017
- 2017-05-23 CN CN201710370803.XA patent/CN107270318B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3626483A1 (en) * | 1986-08-05 | 1987-04-23 | Wet Waerme Energietechnik Gmbh | Chimney renewal insert |
| CN102022745A (en) * | 2009-09-16 | 2011-04-20 | 苏州新长光热能科技有限公司 | Novel open and close device of smoke evacuation pipe of aluminium cooling chamber |
| CN202227861U (en) * | 2011-08-04 | 2012-05-23 | 杭州杭锅通用设备有限公司 | Smoke baffle door driving transmission system |
| TW201430289A (en) * | 2013-01-17 | 2014-08-01 | China Steel Corp | Waste gas suction device and cooling apparatus |
| CN203421189U (en) * | 2013-07-26 | 2014-02-05 | 攀钢集团工程技术有限公司 | Counter weight type wind blockage valve |
| CN203704003U (en) * | 2013-11-28 | 2014-07-09 | 金荣森 | Desulfurization baffle door |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107270318A (en) | 2017-10-20 |
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