CN211503234U

CN211503234U - Air supply pipeline for hot-blast stove convenient to add quantitative gas

Info

Publication number: CN211503234U
Application number: CN201921877275.8U
Authority: CN
Inventors: 张政科; 赵双; 刘炼; 舒俊淞; 吴春晓; 张军
Original assignee: Chongqing Heti Environmental Testing Co ltd
Current assignee: Chongqing Heti Environmental Testing Co ltd
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2020-09-15
Anticipated expiration: 2029-11-04

Abstract

The utility model discloses a supply-air duct for hot-blast furnace convenient to add quantitative gas, including being responsible for and storage compartment, the inside top of being responsible for is provided with the upper branch pipe, and the inside below of being responsible for has seted up the lower branch pipe, the lower surface of lower branch pipe is connected with the storage tube, and the inside center department of storage tube is provided with the screw rod, the top of screw rod is connected with the baffle, and the baffle is in the inside of storage tube, the inside of lower branch pipe is provided with the heating network, and the right-hand member of lower branch pipe is fixed with the check valve, the below of motor is connected with the axis of rotation, and the axis of rotation is in the inside of storage compartment, the outside of axis of rotation is connected with the piston dish, the. This supply-air duct for hot-blast furnace convenient to add quantitative gas can adjust the admission capacity of air and natural gas, can heat the air moreover, and during the quantitative entering into of ammonia was responsible for, 3 kinds of gas carried out the homogeneous mixing through the spoiler.

Description

Air supply pipeline for hot-blast stove convenient to add quantitative gas

Technical Field

The utility model relates to a flue gas treatment technical field specifically is a supply-air duct for hot-blast stove convenient to add quantitative gas.

Background

The air supply pipeline for the hot blast stove can send combustion gas into the hot blast stove for combustion, so that sufficient gas is provided for combustion of the hot blast stove, and after a certain amount of other gas is added into the air supply pipeline for the hot blast stove, the combustion efficiency can be improved, and the generated harmful gas is reduced.

In a general air supply pipeline for a hot blast stove, before combustion gas enters the hot blast stove, the temperature of the combustion gas is low, so that more heat needs to be absorbed to reach a burning point, and the heat generated by the hot blast stove is reduced;

after the mixed gas is decomposed and added into the air supply pipeline, the air supply pipeline cannot be mixed, so that the gas is not mixed uniformly, and the generated heat is influenced because the combustion gas has too high concentration and no oxygen during combustion.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a supply-air duct for hot-blast stove convenient to add quantitative gas to the combustion gas temperature who proposes among the above-mentioned background art is low and the inhomogeneous problem of mist mixing.

In order to achieve the above object, the utility model provides a following technical scheme: an air supply pipeline for a hot blast stove convenient for adding quantitative gas comprises a main pipe and a storage chamber, wherein an upper branch pipe is arranged above the inside of the main pipe, and a lower branch pipe is arranged at the lower part inside the main pipe, the lower surface of the lower branch pipe is connected with a storage pipe, a screw rod is arranged at the center of the inner part of the storage tube, a baffle plate is connected above the screw rod and is arranged in the storage tube, a heating net is arranged in the lower branch tube, a check valve is fixed at the right end of the lower support pipe, a spoiler is arranged inside the main pipe, an air inlet is fixed at the side surface of the storage chamber, a motor is arranged at the center of the upper surface of the storage chamber, the material storage chamber is fixed above the main pipe, a rotating shaft is connected below the motor and is arranged in the material storage chamber, the outside of axis of rotation is connected with the piston dish, the gas vent has been seted up to the below of storage compartment.

Preferably, spoilers are arranged in the main pipe at equal intervals and are fan-shaped.

Preferably, the storage pipe and the baffle are connected in a sliding mode, and 2 storage pipes and 2 baffle plates are symmetrically arranged on the center dividing line of the main pipe.

Preferably, the screw and the storage pipe are in threaded connection, and the screw and the baffle form a rotating structure.

Preferably, the rotating shaft and the main pipe form a rotating structure, and the rotating shaft and the piston disc are in threaded connection.

Preferably, the piston disc and the storage chamber are in sliding friction connection, the storage chambers are arranged in a mirror image mode, 2 storage chambers are arranged in the mirror image mode, and the storage chambers are in through connection with the main pipe through the exhaust ports.

Compared with the prior art, the beneficial effects of the utility model are that: the air supply pipeline for the hot blast stove convenient for adding quantitative air,

1. the baffle can be lowered by rotating the screw rod, so that the inflow speed of the gas in the upper branch pipe and the lower branch pipe is controlled, the heating net is arranged in the lower branch pipe, the heating net can heat the flowing air, so that the temperature of the gas is increased, the combustion efficiency of the heating furnace is improved, the check valve is fixed on the right side of the lower branch pipe, and the check valve can prevent the gas in the main pipe from flowing into the lower branch pipe, so that the temperature of the heating net is overhigh and the gas is ignited;

2. after ammonia gas is added into the storage chamber, the rotating machine drives the lower rotating shaft to rotate, so that the piston disc is driven to descend, the piston disc descends to generate pressure on the ammonia gas in the storage chamber, the one-way valve is opened, the ammonia gas flows into the main pipe from the exhaust port, the one-way valve also prevents the gas in the main pipe from entering the storage chamber, 2 storage chambers are arranged in the device, the device can work in turn, and the ammonia gas can stably enter the main pipe;

3. after air, natural gas and ammonia entered into in being responsible for, can pass through the spoiler, the arc structure of spoiler can make the gas of process gather together to the centre to make three kinds of gases all mix to the centre, make gas after getting into the hot-blast furnace, the burning is more abundant.

Drawings

FIG. 1 is a schematic view of the overall front cross-sectional structure of the present invention;

FIG. 2 is a left side sectional view of the main pipe of the present invention;

FIG. 3 is a right side view schematic structure of the main pipe and the material storage chamber of the present invention;

fig. 4 is a schematic view of the overall overlook sectional structure of the present invention.

In the figure: 1. a main pipe; 2. an upper branch pipe; 3. a lower branch pipe; 4. a storage tube; 5. a screw; 6. a baffle plate; 7. heating the net; 8. a one-way valve; 9. a spoiler; 10. a storage chamber; 11. an air inlet; 12. an electric motor; 13. a rotating shaft; 14. a piston disc; 15. and (7) an exhaust port.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, the present invention provides a technical solution: a blast pipe for a hot blast stove convenient for adding quantitative gas comprises a main pipe 1, an upper branch pipe 2, a lower branch pipe 3, a storage pipe 4, a screw rod 5, a baffle 6, a heating net 7, a one-way valve 8, a spoiler 9, a storage chamber 10, an air inlet 11, a motor 12, a rotating shaft 13, a piston disc 14 and an exhaust port 15, wherein the upper branch pipe 2 is arranged above the inner part of the main pipe 1, the lower branch pipe 3 is arranged below the inner part of the main pipe 1, the lower surface of the lower branch pipe 3 is connected with the storage pipe 4, the screw rod 5 is arranged at the inner center of the storage pipe 4, the baffle 6 is connected above the screw rod 5, the baffle 6 is arranged inside the storage pipe 4, the heating net 7 is arranged inside the lower branch pipe 3, the one-way valve 8 is fixed at the right end of the lower branch pipe 3, the spoiler 9 is arranged inside the main pipe 1, the air inlet 11 is fixed at the side surface, the storage chamber 10 is fixed above the main pipe 1, the rotating shaft 13 is connected below the motor 12, the rotating shaft 13 is arranged in the storage chamber 10, the piston disc 14 is connected to the outer side of the rotating shaft 13, and the exhaust port 15 is formed below the storage chamber 10.

The spoilers 9 are arranged in the main pipe 1 at equal intervals, the spoilers 9 are fan-shaped, 3 kinds of gas can flow towards the middle after entering the main pipe 1 and pass through the spoilers 9 due to the fact that the spoilers 9 are arc-shaped, and therefore 3 kinds of gas can be mixed, and the gas can be combusted more fully in the air heater.

The storage pipe 4 and the baffle 6 are connected in a sliding way, and 2 baffles are symmetrically arranged on the center line of the main pipe 1, when the inlet speed of the natural gas or air needs to be adjusted, the baffle 6 is put down, so that the area for passing the gas is reduced, the total amount of the gas flowing through is controlled, and the gas combusted in the hot blast stove can generate enough NOx.

Screw rod 5 and storage tube 4 are threaded connection, and screw rod 5 and baffle 6 constitute revolution mechanic, rotate the height of regulation storage tube 4 that screw rod 5 can be accurate to control the inflow speed of air and natural gas, and screw rod 5 and baffle 6 constitute revolution mechanic, have prevented when rotating screw rod 5 that baffle 6 also rotates, cause the screw rod 5 not smooth rotatory.

The rotating shaft 13 and the main pipe 1 form a rotating structure, the rotating shaft 13 and the piston disc 14 are in threaded connection, the motor 12 drives the rotating shaft 13 to rotate, and the rotating shaft 13 and the piston disc 14 are in threaded connection, so that the piston disc 14 can be driven to ascend and descend, and ammonia in the storage chamber 10 is quantitatively input into the main pipe 1.

Piston dish 14 and storage compartment 10 are sliding friction connection, and the storage compartment 10 mirror image is provided with 2, and storage compartment 10 is through exhaust port 15 and the 1 through connection of being responsible for, because piston dish 14 and storage compartment 10 are connected for the block, so prevented that axis of rotation 13 when rotating, can drive piston dish 14 and rotate together, and be provided with 2 storage compartments 10, can let 2 storage compartments 10 work in turn, thereby guarantee that the ration is imported the ammonia and be responsible for in 1.

The working principle is as follows: when the air supply pipeline for the hot blast stove convenient for adding quantitative gas is used, after an external power supply is connected to the pipeline, air enters the lower branch pipe 3, the heating net 7 is arranged in the lower branch pipe 3 and can heat the air, the baffle 6 extends out of the storage pipe 4 by rotating the screw 5 so as to control the air flow rate in the lower branch pipe 3, the right side of the lower branch pipe 3 is connected with the one-way valve 8 to prevent the gas in the main pipe 1 from flowing into the lower branch pipe 3, the natural gas flows into the upper branch pipe 2, and the position of the baffle 6 above the upper branch pipe 2 can be adjusted so as to control the natural gas flow rate;

injecting ammonia gas into the storage chamber 10 from the gas inlet 11, after the ammonia gas is injected, opening the motor 12 to drive the rotating shaft 13 to rotate, so as to drive the piston disc 14 to descend, wherein the pressure in the storage chamber 10 can be changed, so that the ammonia gas is discharged from the gas outlet 15, the gas outlet 15 is provided with the one-way valve 8, so that the gas in the main pipe 1 can not enter the

storage chamber

10, and 2 storage chambers 10 are arranged, so that the 2 storage chambers 10 can work in turn, and the supply of the ammonia gas is ensured;

be responsible for 1 and thoughtlessly have 3 kinds of gas, behind gaseous process spoiler 9, spoiler 9 can be with in the middle of the gas direction to make 3 kinds of gaseous misce benes, improve gaseous combustion efficiency, increased holistic practicality.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a supply-air duct for hot-blast stove convenient to add quantitative gas, includes and is responsible for (1) and storage compartment (10), its characterized in that: an upper branch pipe (2) is arranged above the inner part of the main pipe (1), a lower branch pipe (3) is arranged below the inner part of the main pipe (1), the lower surface of the lower branch pipe (3) is connected with a storage pipe (4), a screw rod (5) is arranged at the center of the inner part of the storage pipe (4), a baffle (6) is connected above the screw rod (5), the baffle (6) is arranged inside the storage pipe (4), a heating net (7) is arranged inside the lower branch pipe (3), a one-way valve (8) is fixed at the right end of the lower branch pipe (3), a spoiler (9) is arranged inside the main pipe (1), an air inlet (11) is fixed on the side surface of the storage chamber (10), a motor (12) is arranged at the center of the upper surface of the storage chamber (10), the storage chamber (10) is fixed above the main pipe (1), and a rotating shaft (13) is connected below the motor (12), and the rotating shaft (13) is arranged in the storage chamber (10), the outer side of the rotating shaft (13) is connected with a piston disc (14), and an exhaust port (15) is formed below the storage chamber (10).

2. The air supply duct for the hot blast stove convenient for adding a fixed amount of air according to claim 1, characterized in that: spoilers (9) are arranged in the main pipe (1) at equal intervals, and the spoilers (9) are fan-shaped.

3. The air supply duct for the hot blast stove convenient for adding a fixed amount of air according to claim 1, characterized in that: the storage pipe (4) and the baffle (6) are in sliding connection, and the two are symmetrically provided with 2 pipes in relation to the center parting line of the main pipe (1).

4. The air supply duct for the hot blast stove convenient for adding a fixed amount of air according to claim 1, characterized in that: the screw rod (5) is in threaded connection with the storage pipe (4), and the screw rod (5) and the baffle (6) form a rotating structure.

5. The air supply duct for the hot blast stove convenient for adding a fixed amount of air according to claim 1, characterized in that: the rotating shaft (13) and the main pipe (1) form a rotating structure, and the rotating shaft (13) is in threaded connection with the piston disc (14).

6. The air supply duct for the hot blast stove convenient for adding a fixed amount of air according to claim 1, characterized in that: the piston disc (14) is connected with the material storage chamber (10) in a sliding friction mode, the material storage chambers (10) are arranged in a mirror image mode, and the material storage chambers (10) are communicated with the main pipe (1) through the exhaust ports (15).