A kind of coke flue gas guided by coke oven changing valve
Technical field
The utility model relates to a kind of flue gas changing valve, leads the flue gas changing valve of burnt dust pelletizing system especially for coke oven.This changing valve is that burnt novel dedusting process nucleus equipment is led in the suction of a kind of top, cooperates coke guide dedusting docking port to finish the purpose that the flue gas of movably coke guide dust hood collection is imported the dedusting main pipe.
Background technique
The coke oven coke side is plucked fire door and is led the flue gas that produces in the burnt process, is collected by the dust hood that is positioned on the coke guide, enters many valves cleaning shaft by the flue gas changing valve again.
At present, the existing flue gas guided by coke changing valve of domestic coke oven adopts the evolution formula that goes up, and valve plate upwards opens valve plate by the push rod that motor drive mechanism promotes to be connected with axle, closes and then relies on the valve plate deadweight.Because the valve plate push rod is positioned at the valve body top, the space can't seal between push rod and valve plate joint and valve body, causes valve plate to push back system part air quantity open and misses, and be not used for dedusting.Simultaneously, Flap valve is in leading burnt dedusting working procedure, because system's flue gas is hot flue gas, valve plate is in the state that colds and heat succeed each other, be easy to occur distortion, and in case distortion occurs, wholely lead burnt dedusting and be responsible for a plurality of flue gas changing valves are arranged again, must cause system's inleakage very big, this also is the main cause that the coke-oven plant of present domestic employing side-intake type flue gas changing valve leads burnt dust pelletizing system poor effect.Adding up-turning type Flap valve working state can't conveniently observe from the outside, and cause the changing valve valve plate situation not in place to occur, and Stamping Steel Ribbon certainly will also cause the ability of system when work can't reach the standard of design because of the aging phenomenon that comes off is difficult to find and maintenance.
Summary of the invention
The purpose of this utility model provides a kind of coke flue gas guided by coke oven changing valve, effectively solves and leads the problems referred to above in the burnt dust removal process.Adopt flue gas changing valve of the present utility model, the system design air quantity can reduce 10%~15%.The problem of leaking out will be greatly improved, and inspection and maintenance problem will be solved.
A kind of coke flue gas guided by coke oven changing valve in the utility model is made up of valve body, valve plate, outside counterweight three parts.It is characterized in that: described valve body side is the casing reinforced structure, sealing fully, and the valve body upper and lower opening is a gas channel, valve plate is downward unfolding mode.Described coke flue gas guided by coke oven changing valve also comprises rotatingshaft, the counterweight arm of force, Stamping Steel Ribbon, and described rotatingshaft is positioned at valve inner one side.Described valve plate is one-sided opening, and relies on rotatingshaft to open, and relies on outside counterweight to close.Be sealed into the inclined-plane sealing between described valve plate and gas channel.Described seal ring is 9 fonts, and material is a silicone rubber.Described seal ring is as a whole, has only a seam.Described outside counterweight is positioned at the valve body outside, is dividing both sides to place along long axis direction.Described valve body end opening is an air intake passage, and suitable for reading is ventilation channel, and end opening docks with docking port on being positioned at coke guide, suitable for readingly then is connected with many valve pipelines flange.Flue gas changing valve valve body structure adopts the form of the outer reinforcement of casing.Air-flow path adopts end opening air intake, the mode of air draft suitable for reading.End opening docks with docking port on being positioned at coke guide, to reach the purpose that the flue gas that the coke guide dust hood is collected imports the many valve pipelines of dedusting.Suitable for readingly then be connected, play the effect of fixed conversion valve, and make flue gas directly import many valves of dedusting pipe with many valve pipelines flange.When leading burnt operation, end opening is finished back, butt joint back whole valve body and is sealed fully, does not exist owing to there being movable part to make the not tight situation of valve seal.Simultaneously, heat-resisting asbestos washer sealing is used in joint suitable for reading, and the silastic sealing strip sealing is then used in the end opening joint.
Valve plate is positioned at valve inner, and valve plate is for opening downwards, when closing and 30 ° of substantially horizontal angles, when opening and 90 ° of substantially horizontal angles.Valve plate is a rectangular, is fixed in vertically on the rotatingshaft arm of force, and rotatingshaft is positioned at valve internal one side.In order to overcome the problem that valve plate is out of shape under the suddenly cold and hot condition at work, valve plate has been carried out special consolidation process, make valve plate on the controlled basis of weight, flatness and intensity have significantly and to improve, and can reach valve air leak rate of air curtain<2% in that system is in service.The valve plate counterweight part is positioned at the valve body outside, by rotatingshaft the valve plate of opening is closed, and valve plate is opened then and realized by the electric pushrod promotion counterweight arm of force.In order to guarantee that valve plate does not produce the deformation of reversing when moving, counterweight part divides two-part to fit over the valve both sides along the valve plate length direction.Counterweight adopts monolithic form, is convenient to adjust weight, and a plurality of counterweights hole is set on the arm of force, so also can reach the purpose of regulating the valve plate sealed vol by the length of regulating the arm of force.
At valve plate and docking port seal aspect, all adopt silastic sealing strip, adopt 9 font integral sealing circles in form.Operability when the steadiness of consideration seal ring assembling and maintenance, the mode that adopts jackscrew and band steel that seal ring is compressed in the outer ring during installation.
After valve processing assembling finishes, carry out closed-water test, and outside counterweight is adjusted, after requiring to reach valve plate and closing, do not leak downwards to qualified.During on-the-spot the installation, piping erection, adjust and finish, guarantee that each flange of many valves pipe all aligns and keeps same plane after, cooperate coke guide to carry out the installation of valve.
Description of drawings
Below in conjunction with accompanying drawing the utility model is advanced an explanation.
Fig. 1 is the utility model elevation.
Fig. 2 is the utility model profile.
Fig. 3 is the utility model side sectional view.
Valve body 1, valve plate 2, outside counterweight 3, rotatingshaft 4, the counterweight arm of force 5, Stamping Steel Ribbon 6.
Embodiment
This flue gas changing valve comprises valve body 1, valve plate 2, outside counterweight 3, also comprises rotatingshaft 4, the counterweight arm of force 5, Stamping Steel Ribbon 6.
Flue gas changing valve valve body 1 adopts the form of the outer reinforcement of casing, and air-flow path adopts end opening air intake, the mode of air draft suitable for reading.
End opening docks with docking port on being positioned at coke guide, to reach the purpose that the flue gas that the coke guide dust hood is collected imports the many valve pipelines of dedusting; Suitable for readingly then be connected, play the effect of fixed conversion valve, and make flue gas directly import many valves of dedusting pipe with many valve pipelines flange.When leading burnt operation, end opening is finished back, butt joint back whole valve body and is sealed fully, does not exist owing to there being movable part to make the not tight situation of valve seal.Simultaneously, heat-resisting asbestos washer sealing is used in joint suitable for reading, and the silastic sealing strip sealing is then used in the end opening joint.
Valve plate 2 is positioned at valve body 1 inside, and valve plate 2 is for opening downwards, when closing and 30 ° of substantially horizontal angles, when opening and 90 ° of substantially horizontal angles.Valve plate 2 is a rectangular, is fixed in vertically on rotatingshaft 4 arm of forces, and rotatingshaft 4 is positioned at valve internal one side.In order to overcome the problem that valve plate 2 is out of shape under the suddenly cold and hot condition at work, valve plate 2 has been carried out special consolidation process, make valve plate 2 on the controlled basis of weight, flatness and intensity have significantly and to improve, and can reach valve air leak rate of air curtain<2% in that system is in service.
The outside counterweight 3 of valve plate 2 is positioned at the valve body outside, by rotatingshaft 4 valve plate of opening 2 is closed, and valve plate 2 is opened then and realized by the rotatingshaft promotion counterweight arm of force 5.In order to guarantee that valve plate 2 does not produce the deformation of reversing when moving, outside counterweight 3 divides two-part to fit over the valve both sides along valve plate 2 length directions.Outside counterweight 3 adopts monolithic form, is convenient to adjust weight.And a plurality of counterweights hole is set on the arm of force, so also can reaches the purpose of regulating the valve plate sealed vol by the length of regulating the arm of force.
At valve plate 2 and docking port seal aspect, all adopt silastic sealing strip, adopt 9 font integral sealing circles in form.Operability when the steadiness of consideration seal ring assembling and maintenance, the mode that adopts jackscrew and band steel that seal ring is compressed in the outer ring during installation.
After valve processing assembling finishes, carry out closed-water test, and outside counterweight 3 is adjusted, after requiring to reach valve plate 2 and closing, do not leak downwards to qualified.During on-the-spot the installation, piping erection, adjust and finish, guarantee that each flange of many valves pipe all aligns and keeps same plane after, cooperate coke guide to carry out the installation of valve.
The above case only is a preferable case study on implementation of the present utility model; be not to limit practical range of the present utility model with this; so any equivalence that all shapes according to the utility model, structure and principle are done changes, and all should be covered by in the protection domain of the present utility model.