Pulverized coal storage bin

Abstract

The utility model relates to a pulverized coal storage bin, which is applied to the technical field of metallurgy, solves the problems that the pulverized coal storage bin is easy to explode and has potential safety production hazards, and comprises a storage bin body, a coal conveying pipeline, an explosion venting pipe, a smoke exhaust pipeline and a control piece, the gas detector is arranged at the top of the stock bin body, the temperature detector is arranged at the lower part of the stock bin body, and the purging assembly comprises a purging spray head, an inert gas conveying pipe communicated with a gas inlet of the purging spray head and a control valve arranged on the inert gas conveying pipe. The signal output ends of the double-gas detector and the temperature detector are both in signal connection with the signal receiving end of the control part, and the signal receiving end of the control valve is in signal connection with the signal output end of the control part; the material bin has the effects of reducing the risk of explosion in the material bin body, improving the safety performance of production and reducing the potential safety hazard of production.

Description

TECHNICAL FIELD

[0001] The utility model discloses a coal powder storage bin applied in the metallurgical technical field, in particular to a coal powder storage bin. BACKGROUND

[0002] The dryer is a necessary process link for supplying material from the raw material field to the ironmaking, and is used for feeding the iron ore containing water into a blast furnace after reducing the water content through heat drying treatment. In the drying process, the drying furnace uses coal gas or coal powder ignition combustion to improve the preheating temperature. After storing the bituminous coal or anthracite in the coal powder storage bin, when the bituminous coal is accumulated in the closed or semi-closed coal storage bin for a long time, smoldering may occur due to the oxygen-deficient environment. The smoldering is a slow oxidation process of the coal under the oxygen-deficient condition, which can release a large amount of carbon monoxide. The carbon monoxide can cause the risk of flammability and explosiveness in the coal powder storage bin after meeting oxygen, and the risk of carbon monoxide poisoning of the maintenance workers or explosion due to the open flame during the maintenance, which causes the hidden danger of safety production. CONTENT

[0003] The utility model discloses a coal powder storage bin, solve the problem that the coal powder storage bin is easy to explode and has the hidden danger of safety production.

[0004] To achieve the above-mentioned purpose, the utility model adopts the technical scheme that:

[0005] The utility model provides a coal powder storage bin, including the bin body, the coal conveying pipeline, the explosion venting pipe, the smoke exhaust pipeline and the control piece, be provided with double gas detector and at least one temperature detector on the bin body, the gas detector sets up at the top of bin body, temperature detector sets up in the lower part of bin body, still include purging assembly, purging assembly includes purging spray head, with inert gas delivery pipe of purging spray head's air inlet communication and set up on inert gas delivery pipe control valve, double gas detector with temperature detector's signal output end all with control piece's signal receiving end signal connection, control valve's signal receiving end with control piece's signal output end signal connection.

[0006] Further, the number of temperature detectors is three, and the three temperature detectors are sequentially arranged from top to bottom along the height of the bin body.

[0007] Further, the number of purging spray heads is multiple, and the multiple purging spray heads are uniformly distributed along the circumference of the bin body. The air inlet of each purging spray head is in communication with the inert gas delivery pipe.

[0008] Further, the multiple purging spray heads are arranged in the lower part of the bin body.

[0009] Further, the manual switching piece further comprises a manual conveying pipe and a manual control valve arranged on the manual conveying pipe, both ends of the manual conveying pipe are communicated with the inert gas conveying pipe, and the control valve is located between the two ends of the manual conveying pipe.

[0010] Further, the inert gas conveyed by the inert gas conveying pipe is nitrogen.

[0011] Further, the coal powder conveying control valve is arranged on the coal conveying pipeline, the signal output end of the pressure detector is connected with the signal receiving end of the control piece, and the signal receiving end of the coal powder conveying control valve is connected with the signal output end of the control piece.

[0012] By using the technical scheme, the utility model has the following advantages compared with the prior art:

[0013] The coal powder storage bin is provided with double gas detectors, temperature detectors and a purging assembly, and realizes interlocking control, can realize real-time monitoring on the inside of the bin body, can timely and quickly purge oxygen and carbon monoxide in the bin body, effectively and safely completes the replacement task, simultaneously cools the bin body, reduces the risk of explosion in the bin body, improves the safety performance of production and reduces the production safety hidden danger. BRIEF DESCRIPTION OF DRAWINGS

[0014] Some specific embodiments of the utility model will be described in detail below with reference to the drawings in an exemplary but not restrictive manner. The same reference signs in the drawings indicate the same or similar components or parts. Those skilled in the art should understand that the drawings are not necessarily drawn to scale. In the drawings:

[0015] Figure 1 is the overall structure schematic view in the preferred embodiment of the utility model;

[0016] Figure 2 is the local enlarged view in the preferred embodiment of the utility model;

[0017] Figure 3 is the control piece structure schematic view in the preferred embodiment of the utility model.

[0018] Among them, the reference signs are explained as follows:

[0019] 1, bin body;

[0020] 2, coal conveying pipeline;

[0021] 3, explosion venting pipe;

[0022] 4, smoke exhaust pipeline;

[0023] 5, control; 51, signal receiving module; 52, data analysis module; 53, signal output module;

[0024] 6, dual gas detector;

[0025] 7, temperature detector;

[0026] 8, purge assembly; 81, purge nozzle; 82, inert gas delivery; 83, control valve;

[0027] 9, manual switching piece; 91, manual delivery pipe; 92, manual control valve;

[0028] 10, pressure detector; 11, pulverized coal delivery control valve. DETAILED DESCRIPTION

[0029] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0031] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict between them.

[0032] Reference Figure 1 , Figure 2 and Figure 3The utility model provides a kind of coal powder storage bin, including bunker body 1, coal conveying pipeline 2, blow-off pipe 3, smoke exhaust pipeline 4 and control piece 5, control piece 5 includes signal receiving module 51, data analysis module 52 and signal output module 53, bunker body 1 is provided with double gas detector 6 and at least one temperature detector 7, double gas detector 6 is arranged at the top of bunker body 1, and the oxygen concentration and carbon monoxide concentration in bunker body 1 are detected by double gas detector 6, temperature detector 7 is arranged at the lower part of bunker body 1, and the temperature in bunker body 1 is detected by temperature detector 7, prevent bunker body 1 temperature higher, coal powder self-ignition occurs.

[0033] Reference Figure 1 , Figure 2 and Figure 3 , it further includes purging assembly 8, purging assembly 8 includes purging spray head 81, inert gas delivery pipe 82 with the air inlet of purging spray head 81 communication and control valve 83 being arranged on inert gas delivery pipe 82, the signal output end of double gas detector 6 and temperature detector 7 is all with the signal receiving end signal connection of control piece 5, the signal receiving end of control valve 83 is with the signal output end signal connection of control piece 5.

[0034] Reference Figure 1 , Figure 2 and Figure 3, When working, the oxygen concentration, carbon monoxide concentration and temperature in the silo body 1 are detected by the double gas detector 6 and the temperature detector 7, and the detected data are transmitted to the control member 5 for data analysis and comparison. When the oxygen concentration and carbon monoxide concentration in the silo body 1 are detected to be outside the set safety range, and the temperature in the silo body 1 is higher than the set temperature safety value, the control valve 83 is controlled to be opened. At this time, the inert gas is delivered to the blowing nozzle 81 through the inert gas delivery pipe 82, and the inert gas is delivered into the silo body 1 through the blowing nozzle 81. Under the action of the inert gas, the high-concentration oxygen and carbon monoxide can be blown out of the silo body 1 in time, and the silo body 1 can be cooled in time, thereby reducing the risk of explosion. When the silo is maintained, the oxygen and carbon monoxide in the silo body 1 can also be discharged by blowing inert gas, avoiding the poisoning phenomenon of workers during maintenance, improving safety, and reducing safety production hidden dangers. The delivered inert gas is nitrogen, which has relatively stable chemical properties and can effectively blow the oxygen and carbon monoxide in the silo body 1 out of the silo body 1. The number of temperature detectors 7 is three, and the three temperature detectors 7 are sequentially arranged from top to bottom along the height of the silo body 1. The temperature of the coal powder at different heights at the bottom of the silo body 1 can be detected by the longitudinally arranged temperature detectors 7. The temperature data detected by the three temperature detectors 7 are transmitted to the control member 5. The received temperature data are analyzed and calculated by the control member 5 and compared with the set safety temperature value, which can improve the accuracy of temperature detection in the silo body 1.

[0035] Reference Figure 1 , Figure 2 and Figure 3 , The number of blowing nozzles 81 is set to be multiple. The multiple blowing nozzles 81 are arranged at the lower part of the silo body 1. The multiple blowing nozzles 81 are uniformly distributed along the circumference of the silo body 1. The gas inlet of each blowing nozzle 81 is in communication with the inert gas delivery pipe 82. According to the chemical properties of nitrogen itself, the blowing nozzles 81 are arranged at the lower part of the silo body 1, and multiple blowing nozzles 81 are arranged, which can better blow the oxygen and carbon monoxide in the silo body 1 clean.

[0036] Reference Figure 1 , Figure 2 and Figure 3 , The manual switching member 9 further comprises a manual delivery pipe 91 and a manual control valve 92 arranged on the manual delivery pipe 91. Both ends of the manual delivery pipe 91 are in communication with the inert gas delivery pipe 82, and the control valve 83 is located between the two ends of the manual delivery pipe 91. When power failure or automatic blowing assembly 8 failure occurs, the manual switching member 9 can be used for blowing, realizing the continuity of blowing, ensuring the normal work of blowing, and improving the safety of work production.

[0037] ReferenceFigure 1 、 Figure 2 and Figure 3 , further comprising a pressure detector 10 and a pulverized coal conveying control valve 11 arranged on the coal conveying pipeline 2, a signal output end of the pressure detector 10 is signal connected with a signal receiving end of the control member 5, and a signal receiving end of the pulverized coal conveying control valve 11 is signal connected with a signal output end of the control member 5. When the concentration of oxygen and carbon monoxide in the bunker body 1 is high, the pressure in the bunker body 1 becomes large at this time, at this time, the pressure in the bunker is detected by the pressure detector 10, when the pressure is higher than the set safety value, the pulverized coal conveying control valve 11 is controlled by the control member 5 to continue feeding into the bunker.

[0038] In summary, through the interlocking control of the double gas detector, the temperature detector 7 and the purging assembly 8, the inside of the bunker body 1 can be monitored in real time, the oxygen and carbon monoxide in the bunker body 1 can be blown out of the bunker body 1 in time and quickly, the replacement task can be effectively and safely completed, the inside of the bunker body 1 can be cooled, thereby reducing the risk of explosion in the bunker body 1, improving the safety performance of production, and reducing the production safety hidden danger.

[0039] The above embodiments are only for illustrating the technical concept and characteristics of the present application, the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and it cannot limit the protection scope of the present application, any equivalent changes or modifications made according to the spirit and essence of the present application should be covered within the protection scope of the present application.

Claims

1. A coal dust storage bin comprising a bin body (1), a coal conveying pipeline (2), a pressure relief pipeline (3), a smoke exhaust pipeline (4) and a control member (5), characterized in that, The silo body (1) is provided with a double gas detector (6) and at least one temperature detector (7), the double gas detector (6) is arranged at the top of the silo body (1), the temperature detector (7) is arranged at the lower part of the silo body (1), further comprising a purging assembly (8), the purging assembly (8) comprises a purging nozzle (81), an inert gas delivery pipe (82) in communication with the gas inlet of the purging nozzle (81) and a control valve (83) arranged on the inert gas delivery pipe (82), the signal output end of the double gas detector (6) and the temperature detector (7) is signal connected with the signal receiving end of the control part (5), the signal receiving end of the control valve (83) is signal connected with the signal output end of the control part (5).

2. The coal dust storage bin according to claim 1, characterized in that, The number of temperature detectors (7) is three, and the three temperature detectors (7) are sequentially arranged from top to bottom along the height of the silo body (1).

3. The coal dust storage bin according to claim 1 or 2, characterized in that The number of purging nozzles (81) is multiple, and multiple purging nozzles (81) are uniformly distributed along the circumference of the silo body (1), and the gas inlet of each purging nozzle (81) is in communication with the inert gas delivery pipe (82).

4. The coal bunker according to claim 3, wherein Multiple purging nozzles (81) are arranged at the lower part of the silo body (1).

5. The coal dust storage bin according to claim 4, characterized in that Further comprising a manual switching part (9), the manual switching part (9) comprises a manual delivery pipe (91) and a manual control valve (92) arranged on the manual delivery pipe (91), both ends of the manual delivery pipe (91) are in communication with the inert gas delivery pipe (82), and the control valve (83) is located between the two ends of the manual delivery pipe (91).

6. The coal dust storage bin according to claim 5, characterized in that The inert gas delivered by the inert gas delivery pipe (82) is nitrogen.

7. The coal dust storage bin according to claim 1 or 6, characterized in that Further comprising a pressure detector (10) and a pulverized coal delivery control valve (11) arranged on the coal conveying pipeline (2), the signal output end of the pressure detector (10) is signal connected with the signal receiving end of the control part (5), and the signal receiving end of the pulverized coal delivery control valve (11) is signal connected with the signal output end of the control part (5).

Images