CN217418739U

CN217418739U - Mechanical stock rod deashing protection device

Info

Publication number: CN217418739U
Application number: CN202220094000.2U
Authority: CN
Inventors: 谢锦官; 曾锦; 谢碧风; 腾光瑞
Original assignee: Yancheng Lianxin Iron and Steel Co Ltd
Current assignee: Yancheng Lianxin Iron and Steel Co Ltd
Priority date: 2022-01-14
Filing date: 2022-01-14
Publication date: 2022-09-13
Anticipated expiration: 2032-01-14

Abstract

The utility model discloses a machinery stock rod deashing protection device, including the nitrogen gas jar, one side intercommunication of nitrogen gas jar has second nitrogen gas pipeline, and second nitrogen gas pipeline lateral wall is close to the one end of nitrogen gas jar and installs electric ball valve and check valve, the bottom intercommunication of second nitrogen gas pipeline has first nitrogen gas pipeline, the one end that nitrogen gas jar was kept away from to second nitrogen gas pipeline is installed the sprocket case, and this end that second nitrogen gas pipeline enters into the inside of sprocket case. The interval time of the regular repair of the blast furnace is 2.5 months generally, and scales on all parts in the casing of the stock rod can not be cleaned at any time during normal production. Maintenance personnel can only be used for carrying out ash removal inspection by opening the top of the shell of the stock rod and manholes on the side edges during maintenance, the personnel use a small hammer and a steel wire brush to inspect and clean for about 2 hours, and if a chain is cracked and a rotating shaft is abraded, a large amount of manpower and maintenance time are needed for maintenance and replacement. If implemented, a new type of device is used.

Description

Mechanical stock rod deashing protection device

Technical Field

The utility model relates to a stockline surveys technical field in the stove specifically is a machinery stock rod deashing protection device.

Background

In the production process of a blast furnace, the charge level is reduced along with the passage of time, a stock rod device is arranged for detecting the reduction speed of the charge level and sending an instruction for starting a charging program, because the interior of a stock rod reel box body is directly communicated with the interior of the top of the blast furnace, the interior of the reel box body is filled with a mixed medium (coal ash) of coal gas and dust with high temperature (150-500 ℃) and high pressure (about 0.3MPa at most), and when the coal ash and the high temperature are in the interior for a long time, because the mechanical stock rod of the blast furnace needs to continuously operate and detect the charge level for a long time under the condition, the annealing of the stock rod chain is easy to reduce and break, the reel is easy to deposit ash and scale, a combined sealing gasket at the shaft end is easy to wear and leak gas, the stock rod cannot damage the blast furnace production, and the important factors that the charge level cannot be accurately detected can not be generated, and the faults include the falling off of a chain hammer, the chain twisting, the tight gas leakage of the chain and the tight combined sealing at the shaft end, Axis of rotation wearing and tearing etc. because the direct high pressure that has in stock rod and the blast furnace stove, heat, coal gas, and can not the online maintenance after breaking down handle, consequently, the utility model relates to a mechanical stock rod deashing protection device is in order to solve the problem that exists among the prior art.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a machinery stock rod deashing protection device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a machinery stock rod deashing protection device, includes the nitrogen gas jar, one side intercommunication of nitrogen gas jar has second nitrogen gas pipeline, and second nitrogen gas pipeline lateral wall is close to the one end of nitrogen gas jar and installs electric ball valve and check valve, the bottom intercommunication of second nitrogen gas pipeline has first nitrogen gas pipeline, the one end that nitrogen gas jar was kept away from to second nitrogen gas pipeline is installed the sprocket case, and this end of second nitrogen gas pipeline enters into the inside of sprocket case, the horn of sweeping mouth is installed to the one end of second nitrogen gas pipeline in sprocket case inside, the one end intercommunication at sprocket case top has the pipe of diffusing, and diffuses and install manual ball valve on the pipe, the inside of sprocket case is provided with the reel, and is provided with the chain on the reel, the visit hammer is installed to the bottom of chain, the both ends symmetry of reel is provided with the sealed pad of axle head combination, and the reel passes through the sealed inboard of installing at the sprocket case of axle head combination, and a high-temperature ball valve is arranged at the lower pipeline of the chain wheel box.

Preferably, the first nitrogen gas pipe and the second nitrogen gas pipe are medium pressure type nitrogen gas pipes.

Preferably, the electric ball valve automatically controls and adjusts the inlet flow of nitrogen according to the furnace top temperature.

Preferably, the high-temperature ball valve has the sealing performance of high temperature resistance and high pressure resistance.

Preferably, the nitrogen pressure in the sprocket box is stably higher than the top pressure of the blast furnace.

Compared with the prior art, the beneficial effects of the utility model are as follows:

1. the interval time of the regular repair of the blast furnace is 2.5 months generally, and scales on all parts in the casing of the stock rod can not be cleaned at any time during normal production. Maintenance personnel can only be utilized to open the top of the casing of the stock rod and a manhole at the side edge during maintenance to carry out ash removal inspection, and the personnel use a small hammer and a steel wire brush to inspect and clean the stock rod for about 2 hours, and if a chain is cracked and a rotating shaft is abraded, a large amount of manpower and maintenance time are required to carry out maintenance and replacement. If implemented and used novel device, can ensure constantly that stock rod casing internal member is clean, need not carry out a large amount of time and personnel and carry out the deashing work during the maintenance.

2. The mechanical stock rod is often unable to accurately detect the charge level due to the influence of high temperature and gas ash, the distribution of gas flow is influenced, the conditions such as suspension, material collapse and nodulation of a blast furnace can be caused in serious conditions, and if damping down is carried out for rush-repair treatment. Generally, more than 3 hours of damping down treatment is needed, which causes the loss of 600 tons of molten iron in a blast furnace, the profit of each ton of molten iron is about 300 yuan, and 18 ten thousand yuan is directly lost when damping down for 3 hours. If the novel device is used, the repair work can be safely carried out online at any time.

3. The structure is simple, all structural components are commonly used and are easy to obtain, the assembly and the disassembly are convenient, and the workload of maintenance is small.

Drawings

Fig. 1 is a schematic front sectional view of the present invention.

In the figure: 1. a nitrogen tank; 2. a sprocket case; 3. an electric ball valve; 4. a manual ball valve; 5. a check valve; 6. a horn purge port; 7. a high temperature ball valve; 8. a diffusing pipe; 9. a winding drum; 10. a chain; 11. a shaft end combination sealing gasket; 12. a hammer is detected; 13. a first nitrogen gas conduit; 14. a second nitrogen gas line.

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 efforts all belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides an embodiment: referring to fig. 1, the utility model provides an embodiment of a mechanical stock rod ash removal protection device: the utility model provides a machinery stock rod deashing protection device, including 1 nitrogen gas jar, 2 sprocket case, 3 electric ball valve, 4 manual ball valve, 5 check valves, 6 loudspeaker sweep the mouth, 7 high temperature ball valve, 8 diffuse the pipe, 9 the reel, 10 the chain, 11 axle head combination sealing pads, 12 spy hammer, 13 nitrogen gas pipeline, install 3 electric ball valve and 5 automatic inlet flow according to furnace roof temperature control regulation nitrogen gas of check valve on the rear end pipeline of 1 nitrogen gas jar, 13 nitrogen gas pipeline divide into two the tunnel, connect all the way and get into in 2 sprocket case tops, 6 loudspeaker of installation of inside pipeline mouth department sweep the mouth, nitrogen gas sweeps toward 6 loudspeaker sweep the mouth through the check valve, high-pressure nitrogen gas forms the malleation, prevent that gas leakage from causing the accident. When the nitrogen gas jar lasts to sweeping through 6 loudspeaker blowing openings, prevent that moisture coal gas and stove dirt from getting into the sprocket case when the top temperature is lower and pile up, the dust bonds on the sealed pad of 9 reels of mechanical stock rod, 10 chains and 11 axle heads combination, influences the accuracy usability of mechanical stock rod measurement, has avoided the damage of mechanical stock rod inner part simultaneously, can carry out the protection of dustproof cooling to 9 reels of stock rod, 10 chains and 11 axle heads combination sealed pads effectively. On connecting 2 sprocket case below pipelines of getting into all the way, the nitrogen gas export is close to and to 7 high temperature ball valves, and the effectual sealed face that gives 7 high temperature ball valves carries out deashing cooling work to one side. 8 diffuse pipes and 4 manual ball valves are installed on the upper portion of the 2 sprocket box shell, a high-temperature ball valve is installed on a pipeline on the lower portion of the sprocket box, the 12 feeler hammer is lifted to the position above the 7 high-temperature ball valve, the 7 high-temperature ball valve is closed, the 3 electric ball valve and the 4 manual ball valves are opened, and coal gas in the 2 sprocket box shell can be swept completely. When the conditions of the trial rod, such as falling off of the trial hammer, twisting of the chain, untight sealing of the shaft end, air leakage and the like, are generated, fault treatment can be performed under the condition of no damping down and production halt.

In this implementation: the 13 nitrogen pipe is a medium pressure type 13 nitrogen pipe, the nitrogen pressure is stably higher than the top pressure of the blast furnace, and the integral stability and safety are improved; 3, the electric ball valve automatically controls and adjusts the gas inlet flow of nitrogen according to the temperature of the furnace top, thereby reducing the energy consumption; 7 the high-temperature ball valve has the high-temperature and high-pressure resistant sealing performance, the sealing performance is improved, and the gas leakage is avoided

To sum up, the utility model provides a trouble probability that mechanical stock rod deashing protection device can effectual reduction mechanical stock rod take place reduces and maintains the maintenance time and has improved equipment life, reaches the condition of on-line maintenance simultaneously, can also be better protects equipment and personnel safety, reduces personnel and overhauls the amount of labour and repair time. Those not described in detail in this specification are within the skill of the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a machinery stock rod deashing protection device, includes nitrogen gas jar (1), its characterized in that: one side intercommunication of nitrogen gas jar (1) has second nitrogen gas pipeline (14), and second nitrogen gas pipeline (14) lateral wall is close to the one end of nitrogen gas jar (1) and installs electric ball valve (3) and check valve (5), the bottom intercommunication of second nitrogen gas pipeline (14) has first nitrogen gas pipeline (13), sprocket case (2) is installed to the one end that nitrogen gas jar (1) was kept away from in second nitrogen gas pipeline (14), and this end of second nitrogen gas pipeline (14) enters into the inside of sprocket case (2), loudspeaker sweep mouth (6) are installed to second nitrogen gas pipeline (14) in the inside one end of sprocket case (2), the one end intercommunication at sprocket case (2) top has diffuse pipe (8), and installs manual ball valve (4) on diffuse pipe (8), the inside of sprocket case (2) is provided with reel (9), and is provided with chain (10) on reel (9), the utility model discloses a chain wheel box, including chain (10), visit hammer (12) are installed to the bottom of chain (10), the both ends symmetry of reel (9) is provided with shaft end combination sealing gasket (11), and installs the inboard in chain wheel box (2) through shaft end combination sealing gasket (11), high temperature ball valve (7) are installed to the lower part pipeline department of chain wheel box (2).

2. The ash removal protection device for the mechanical probe according to claim 1, which is characterized in that: the first nitrogen pipeline (13) and the second nitrogen pipeline (14) are medium-pressure nitrogen pipes.

3. The ash removal protection device for the mechanical probe according to claim 1, which is characterized in that: and the electric ball valve (3) automatically controls and adjusts the gas inlet flow of nitrogen according to the furnace top temperature.

4. The mechanical stock rod ash removal protection device of claim 1, wherein: the high-temperature ball valve (7) has high-temperature and high-pressure resistant sealing performance.

5. The mechanical stock rod ash removal protection device of claim 1, wherein: the nitrogen pressure in the sprocket wheel box (2) is stably higher than the top pressure of the blast furnace.