CN211689125U - Combined online maintenance type coal injection system - Google Patents
Combined online maintenance type coal injection system Download PDFInfo
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- CN211689125U CN211689125U CN201922423948.9U CN201922423948U CN211689125U CN 211689125 U CN211689125 U CN 211689125U CN 201922423948 U CN201922423948 U CN 201922423948U CN 211689125 U CN211689125 U CN 211689125U
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Abstract
The utility model discloses a combined on-line maintenance type coal injection system, which comprises two sets of systems; the first set of system comprises two coal injection tanks, a left first distributor, a left second distributor, a left first mixer, a left second mixer and a blast furnace, wherein each coal injection tank is sequentially communicated with one mixer and one distributor through a pipeline; the second system comprises two coal injection tanks, a right first distributor, a right second distributor, a right first mixer, a right second mixer and a blast furnace, wherein each coal injection tank is sequentially communicated with one mixer and one distributor through a pipeline and a valve; the outlets on the left distributor, the right distributor and the right distributor are two; one outlet of any distributor is communicated with the blast furnace of the system through a pipeline; and the other outlet of any distributor is connected with the inlets of the distributors in the other set of system in pairs through pipelines. The utility model discloses can accomplish under two sets of and jar coal injection system simultaneous operation's the maintenance of jar coal injection system, work efficiency is high, the power consumption is with low costs.
Description
Technical Field
The utility model relates to a coal injection system, especially a combination online maintenance formula coal injection system.
Background
The blast furnace coal injection at the present stage is divided into a series tank coal injection system and a parallel tank coal injection system, two coal injection tanks in the parallel tank coal injection system are connected in parallel, the conditions of coal accumulation on the inner wall and nozzle blockage occur in the coal injection tanks, and the coal injection tanks need to be overhauled regularly. However, when the coal injection tanks are repaired, the two coal injection tanks need to be repaired at the same time, which results in the two coal injection tanks stopping working at the same time. After the coal injection tank stops working, the mixer does not supply pulverized coal to the blast furnace, and the whole system stops production, so that the working efficiency is reduced to a certain extent, and the coal injection tank cannot be regularly overhauled.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a still can normal production and jar coal injection system when the system overhauls.
In order to solve the technical problem, the utility model discloses the technical scheme who takes is:
a kind of combination maintains the coal injection system online, the said system is two sets; the first set of system comprises two coal injection tanks, a left first distributor, a left second distributor, a left first mixer, a left second mixer and a blast furnace, wherein each coal injection tank is sequentially communicated with one mixer and one distributor through a pipeline; the second system comprises two coal injection tanks, a right first distributor, a right second distributor, a right first mixer, a right second mixer and a blast furnace, wherein each coal injection tank is sequentially communicated with one mixer and one distributor through a pipeline and a valve; the outlets on the left distributor, the right distributor and the right distributor are two; one outlet of any distributor is communicated with the blast furnace of the system through a pipeline; and the other outlet of any distributor is connected with the inlets of the distributors in the other set of system in pairs through pipelines.
The combined on-line maintenance type coal injection system is characterized in that the coal injection tank and the pipelines between the first left mixer, the second left mixer, the first right mixer and the second right mixer are respectively provided with a lower coal valve.
The combined on-line maintenance type coal injection system is characterized in that the left mixer, the right mixer and the right mixer are respectively provided with a solid flow meter.
The combined online maintenance type coal injection system is characterized in that a pipeline of any distributor communicated with a blast furnace of the combined online maintenance type coal injection system is provided with a quick cut-off valve, and a pipeline connected with a distributor in another system is provided with an electric regulating valve.
In the combined on-line maintenance type coal injection system, the coal discharge valve, the solid flow meter and the electric regulating valve are all controlled by the CPU.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in: by matching the distributors in the two parallel-tank coal injection systems, when one parallel-tank coal injection system is overhauled, the other parallel-tank coal injection system supplies coal powder to the distributor of the coal powder bin to be overhauled, so that the effect of non-stop operation of the two parallel-tank coal injection systems is achieved. The utility model discloses can accomplish under two sets of and jar coal injection system simultaneous operation's the maintenance of jar coal injection system, have that work efficiency is high, the characteristics of power consumption with low costs.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a system flow diagram of the present invention;
fig. 2 is a circuit diagram of the present invention.
The list of labels in the figure is: 1A, 1B-a cloth bag coal collecting device; 2A, 2B-coal conveying channel; 3A, 3B-pulverized coal bunker; 4a1, 4a2, 4B1, 4B 2-coal injection tank; 5A, 5B-a nitrogen tank; 6A, 6B-air tank; 7A1, 7A2, 7B1, 7B 2-lower coal valve; 8a1, 8a2, 8B1, 8B2 — a blow valve; 9a1, 9a2, 9B1, 9B 2-left one, left two, right one, right two mixers; 10a1, 10a2, 10B1, 10B2 — solid flow meter; 11a1, 11a2, 11A3, 11B1, 11B2, 11B 3-left one, left two, left three, right one, right two, right three distributors; 12a1, 12a2, 12B1, 12B 2-electric control valve; 13A1, 13A2, 13B1 and 13B2 which are quick cut-off valves; JP-keyboard.
Detailed Description
Fig. 1 and 2 show that the combined online maintenance type coal injection system has two sets, and the first set of system includes a cloth bag coal collecting device 1A, a coal conveying passage 2A, a pulverized coal bunker 3A, a coal injection tank 4a1, a coal injection tank 4a2, a nitrogen tank 5A, an air tank 6A, a coal discharge valve 7a1, a coal discharge valve 7a2, an injection valve 8a1, an injection valve 8a2, a first left mixer 9a1, a second left mixer 9a2, a solid flow meter 10a1, a solid flow meter 10a2, a first left distributor 11A1, a second left distributor 11A2, a third left distributor 11A3, an electric control valve 12A1 and an electric control valve 12A 2. The second set of system comprises a cloth bag coal collecting device 1B, a coal conveying channel 2B, a pulverized coal bunker 3B, a coal injection tank 4B1, a coal injection tank 4B2, a nitrogen tank 5B, an air tank 6B, a coal discharging valve 7B1, a coal discharging valve 7B2, an injection valve 8B1, an injection valve 8B2, a right first mixer 9B1, a right second mixer 9B2, a solid flow meter 10B1, a solid flow meter 10B2, a right distributor 11B1, a right distributor 11B2, a right third distributor 11B3, an electric control valve 12B1 and an electric control valve 12B 2. The outlet of the cloth bag coal collecting device 1A in the first set of system is communicated with the inlet of the coal powder bin 3A, the upper end of the coal powder bin 3A is communicated with the outlet of the coal conveying channel 2A, two outlets of the coal powder bin 3A are provided, one outlet is connected with the inlet of the coal injection tank 4A1 through a pipeline and a valve, and the other outlet is connected with the inlet of the coal injection tank 4A2 through a pipeline and a valve. The outlet of the nitrogen tank 5A is respectively connected to the upper end of the pulverized coal bunker 3A and the lower end of the coal injection tank 4A1 through a pipeline and a valve; the upper end of the pulverized coal bin 3A extends out of the pipeline and is connected with the upper end of the coal injection tank 4A2 through a valve. The outlet of the coal injection tank 4A1 is connected with the coal powder inlet of the left mixer 9A1 through a pipeline and a coal discharge valve 7A 1. The outlet of the air tank 6A is connected with the air inlet of a left mixer 9A1 through a pipeline and a blowing valve 8A1, a solid flow meter 10A1 is installed on the left mixer 9A1, and the outlet of the left mixer 9A1 is connected with the inlet of a left distributor 11A1 through a pipeline. The outlet of the left distributor 11A1 is divided into two parts, one is connected with the blast furnace of the system through a pipeline and a quick-cut valve 13A1, and the other is connected with the inlet of the right distributor 11B1 of the second system through a pipeline and an electric control valve 12A 1. The outlet of the coal injection tank 4A2 is connected with the inlet of a coal feeding valve 7A2 through a pipeline, and the outlet of the coal feeding valve 7A2 is connected with the coal powder inlet of a left-second mixer 9A2 through a pipeline. The outlet of the air tank 6A is connected with the air inlet of a left-second mixer 9A2 through a pipeline and a blowing valve 8A2, a solid flow meter 10A2 is installed on the left-second mixer 9A2, and the outlet of the left-second mixer 9A2 is connected with the inlet of a left-second distributor 11A2 through a pipeline. The outlet of the left second distributor 11A2 is divided into two parts, one is connected with the blast furnace of the system through a pipeline and a quick-cut valve 13A2, and the other is connected with the inlet of the right second distributor 11B2 of the second system through a pipeline and an electric control valve 12A 2.
The outlet of the cloth bag coal collecting device 1B in the second system of the combined online maintenance type coal injection system is connected with the inlet of the pulverized coal bunker 3B, the upper end of the pulverized coal bunker 3B is connected with the outlet of the coal conveying channel 2B, the number of the outlets of the pulverized coal bunker 3B is two, one outlet is connected with the inlet of the coal injection tank 4B1 through a pipeline and a valve, and the other outlet is connected with the inlet of the coal injection tank 4B2 through a pipeline and a valve. The outlet of the nitrogen tank 5B is respectively connected to the upper end of the pulverized coal bunker 3B and the lower end of the coal injection tank 4B1 through a pipeline and a valve; the upper end of the pulverized coal bunker 3B extends out of the pipeline and is connected with the upper end of the coal injection tank 4B2 through a valve. The outlet of the coal injection tank 4B1 is connected with the inlet of a coal discharge valve 7B1 through a pipeline, the outlet of a coal discharge valve 7B1 is connected with the pulverized coal inlet of a right mixer 9B1 through a pipeline, the outlet of an air tank 6B is connected with the air inlet of a right mixer 9B1 through a pipeline and an injection valve 8B1, a solid flow meter 10B1 is installed on the right mixer 9B1, and the outlet of the right mixer 9B1 is connected with the inlet of a right distributor 11B1 through a pipeline. The outlet of the right distributor 11B1 is divided into two parts, one is connected with the blast furnace of the system through a pipeline and a quick-cut valve 13B1, and the other is connected with the inlet of the left distributor 11A1 of the first set of system through a pipeline and an electric control valve 12B 1. The outlet of the coal injection tank 4B2 is connected with the inlet of a coal discharge valve 7B2 through a pipeline, the outlet of a coal discharge valve 7B2 is connected with the coal powder inlet of a right second mixer 9B2 through a pipeline, the outlet of an air tank 6B is connected with the air inlet of a right second mixer 9B2 through a pipeline and an injection valve 8B2, a solid flow meter 10B2 is installed on the right second mixer 9B2, and the outlet of the right second mixer 9B2 is connected with the inlet of a right distributor 11B2 through a pipeline. The outlet of the right distributor 11B2 is divided into two parts, one is connected with the blast furnace of the system through a pipeline and a quick-cut valve 13B2, and the other is connected with the inlet of the left distributor 11A2 of the first set of system through a branch pipe and an electric control valve 12B 2.
The control circuit of the combined on-line maintenance type coal injection system comprises a keyboard JP, a CPU, a triode and a relay. The keyboard JP is connected to the P0.0 port of the CPU, the solid flow meters 10a1, 10a2 are connected to the P1.0 port of the CPU, and the solid flow meters 10B1, 10B2 are connected to the P1.1 port of the CPU. The P2.0 port of the CPU is connected with the base electrode of the first triode, the emitting electrode of the triode is grounded, the collecting electrode is connected with the power supply through the control coil of the relay, and the normally open contact of the control coil of the relay is connected with the electric regulating valve 12A1 and the electric regulating valve 12A2 in series. The P2.1 port of the CPU is connected with the base electrode of the second triode, the emitting electrode of the triode is grounded, the collecting electrode is connected with the power supply through the control coil of the relay, and the normally open contact of the control coil of the relay is connected with the electric regulating valve 12B1 and the electric regulating valve 12B2 in series. The P2.2 port of the CPU is connected with the base electrode of the third triode, the emitting electrode of the triode is grounded, the collecting electrode is connected with the power supply through the control coil of the relay, and the normally open contact of the control coil of the relay is connected with the coal discharging valve 7A1 and the coal discharging valve 7A2 in series. The P2.3 port of the CPU is connected with the base electrode of the fourth triode, the emitting electrode of the triode is grounded, the collecting electrode is connected with the power supply through the control coil of the relay, and the normally open contact of the control coil of the relay is connected with the lower coal valve 7B1 and the lower coal valve 7B2 in series. The P2.4 port of the CPU is connected with the quick-cut-off valve 13A1 and the quick-cut-off valve 13A2 in series, and the P2.5 port of the CPU is connected with the quick-cut-off valve 13B1 and the quick-cut-off valve 13B2 in series.
The combined on-line maintenance type coal injection system has the working process during maintenance as follows: when the second system needs to be serviced, the CPU inputs a signal to the CPU through the keypad JP, and the CPU controls the electric control valve 12a1 and the electric control valve 12a2 to be opened. And simultaneously controlling the nitrogen tank 5B and the air tank 6B in the second set of system to stop supplying air. The coal powder enters the coal powder bin 3A from the coal conveying channel 2A; under the action of nitrogen in the nitrogen tank 5A, the pulverized coal sequentially enters the coal injection tank 4A1 and the coal injection tank 4A2 from two outlets on the pulverized coal bunker 3A through valves respectively. The pulverized coal in the coal injection tank 4A1 reaches the left mixer 9A1 through the coal feeding valve 7A1, the solid flow meter 10A1 arranged on the left mixer 9A1 feeds the flow of the pulverized coal in the left mixer 9A1 back to the CPU, the CPU controls the coal feeding amount of the coal feeding valve 7A1, and when the blast furnaces of the second set of system need more pulverized coal, the CPU controls the coal feeding valve 7A1 to be opened greatly to enable the coal feeding amount to be more; when the second set of system needs less or no coal powder, the CPU controls the coal discharging valve 7A1 to be opened less, so that the coal discharging amount is smaller. The air in the air tank 6A is blown into a left mixer 9A1 under the control of an injection valve 8A1, and the pulverized coal in the left mixer 9A1 is respectively blown into the inlet of a blast furnace of the system and the inlet of a right distributor 11B1 of the second set of system through a pipeline, a quick cut-off valve 13A1 and a left distributor 11A 1. The valve of the quick cut-off valve 13A1 is in a normally open state in daily work, the solenoid valve coil is in a power-off state, when the CPU detects that the system breaks down, the valve coil of the quick cut-off valve 13A1 is electrified instantly, the valve is triggered to be closed quickly, and a protection effect is achieved for the system. The pulverized coal in the coal injection tank 4A2 reaches the left second mixer 9A2 through the coal feeding valve 7A2, the solid flow meter 10A2 arranged on the left second mixer 9A2 feeds the flow of the pulverized coal in the left second mixer 9A2 back to the CPU, the CPU controls the coal feeding amount of the coal feeding valve 7A2, and when the blast furnaces of the second set of system need more pulverized coal, the CPU controls the coal feeding valve 7A2 to be opened greatly to enable the coal feeding amount to be more; when the second set of system needs less or no coal powder, the CPU controls the coal discharging valve 7A2 to be opened less, so that the coal discharging amount is smaller. The air in the air tank 6A is blown into the left second mixer 9A2 under the control of the blowing valve 8A2, and the pulverized coal in the left second mixer 9A2 is blown into the inlet of the blast furnace of the system and the inlet of the right second distributor 11B2 of the second set of system respectively through a pipeline, the quick cut-off valve 13A2 and the left second distributor 11A 2. The valve of the quick cut-off valve 13A2 is in a normally open state in daily work, the solenoid valve coil is in a power-off state, when the CPU detects that the system breaks down, the valve coil of the quick cut-off valve 13A2 is electrified instantly, the valve is triggered to be closed quickly, and a protection effect is achieved for the system. The pulverized coal in the right distributor 11B1 and the right distributor 11B2 in the second set of system is blown by the air of the air tank 6A of the first set of system and is supplied to the blast furnace of the system through the pipeline and the right third distributor 11B3, and finally the purpose that the two sets of systems do not stop working is achieved.
When the first system needs to be repaired, a signal is input to the CPU through the keyboard JP, and the CPU controls the electric control valve 12B1 and the electric control valve 12B2 to be opened. And simultaneously controlling the nitrogen tank 5A and the air tank 6A in the first set of system to stop supplying air. The coal powder enters the coal powder bin 3B from the coal conveying channel 2B; under the action of nitrogen in the nitrogen tank 5B, the pulverized coal sequentially enters the coal injection tank 4B1 and the coal injection tank 4B2 from two outlets on the pulverized coal bunker 3B through valves respectively. The pulverized coal in the coal injection tank 4B1 reaches the right mixer 9B1 through the coal feeding valve 7B1, the solid flow meter 10B1 arranged on the right mixer 9B1 feeds the flow of the pulverized coal in the right mixer 9B1 back to the CPU, the CPU controls the coal feeding amount of the coal feeding valve 7B1, and when the blast furnace of the first set of system needs a large amount of pulverized coal, the CPU controls the coal feeding valve 7B1 to be opened greatly to enable the coal feeding amount to be large; when the first set of system needs less or no coal dust, the CPU controls the lower coal valve 7B1 to be opened less, so that the coal feeding amount is smaller. The air in the air tank 6B is blown into the right mixer 9B1 under the control of the blowing valve 8B1, and the pulverized coal in the right mixer 9B1 is respectively blown into the inlet of the blast furnace of the system and the inlet of the left distributor 11A1 of the first set of system through a pipeline, the quick cut-off valve 13B1 and the right distributor 11B 1. The valve of the quick cut-off valve 13B1 is in a normally open state in daily work, the solenoid valve coil is in a power-off state, when the CPU detects that the system breaks down, the valve coil of the quick cut-off valve 13B1 is electrified instantly, the valve is triggered to be closed quickly, and a protection effect is achieved for the system. The pulverized coal in the coal injection tank 4B2 reaches the right second mixer 9B2 through the coal feeding valve 7B2, the solid flow meter 10B2 arranged on the right second mixer 9B2 feeds the flow of the pulverized coal in the right second mixer 9B2 back to the CPU, the CPU controls the coal feeding amount of the coal feeding valve 7B2, and when the blast furnace of the first set of system needs a large amount of pulverized coal, the CPU controls the coal feeding valve 7B2 to be opened greatly to enable the coal feeding amount to be large; when the first set of system needs less or no coal dust, the CPU controls the lower coal valve 7B2 to be opened less, so that the coal feeding amount is smaller. The air in the air tank 6B is blown into the right second mixer 9B2 through the control of the blowing valve 8B2, and the pulverized coal in the right second mixer 9B2 is blown into the inlet of the blast furnace of the system and the inlet of the left second distributor 11A2 of the first set of system through the pipeline, the quick cut-off valve 13B2 and the right distributor 11B2 respectively. The valve of the quick cut-off valve 13B2 is in a normally open state in daily work, the solenoid valve coil is in a power-off state, when the CPU detects that the system breaks down, the valve coil of the quick cut-off valve 13B2 is electrified instantly, the valve is triggered to be closed quickly, and a protection effect is achieved for the system. The pulverized coal in the left distributor 11A1 and the left distributor 11A2 in the first set of system is blown by the air of the air tank 6B of the second set of system and is supplied to the blast furnace of the system through the pipeline and the left third distributor 11A3, and finally the purpose that the two sets of systems do not stop working is achieved.
Claims (5)
1. The utility model provides a combination online maintenance formula coal injection system which characterized in that: the number of the systems is two; the first set of system comprises two coal injection tanks (4A1, 4A2), a left first distributor (11A 1), a left second distributor (11A 2), a left first mixer (9A 1), a left second mixer (9A 2) and a blast furnace, wherein each coal injection tank is sequentially communicated with one mixer and one distributor through pipelines; the second set of system comprises two coal injection tanks (4B1, 4B2), a right first distributor (11B1, 11B2), a right first mixer (9B1, 9B2) and a blast furnace, wherein each coal injection tank is sequentially communicated with one mixer and one distributor through a pipeline and a valve; two outlets are arranged on the left-first distributor, the left-second distributor, the right-first distributor and the right-second distributor (11A1, 11A2, 11B1 and 11B 2); one outlet of any distributor is communicated with the blast furnace of the system through a pipeline; and the other outlet of any distributor is connected with the inlets of the distributors in the other set of system in pairs through pipelines.
2. The combined on-line maintenance coal injection system of claim 1, wherein: coal valves (7A1, 7A2, 7B1 and 7B2) are mounted on pipelines between the coal injection tanks (4A1, 4A2, 4B1 and 4B2) and the left-first mixer, the left-second mixer, the right-first mixer and the right-second mixer (9A1, 9A2, 9B1 and 9B 2).
3. The combined on-line maintenance coal injection system of claim 2, wherein: solid flow meters (10A1, 10A2, 10B1 and 10B2) are respectively arranged on the left mixer (9A 1), the left mixer (9A 2), the right mixer (9B 1) and the right mixer (9B 2).
4. The combined on-line maintenance coal injection system of claim 3, wherein: and a pipeline of any distributor communicated with the blast furnace of the system is provided with a quick cut-off valve, and a pipeline connected with a distributor in another system is provided with an electric regulating valve.
5. The combined on-line maintenance coal injection system of claim 4, wherein: the coal feeding valves (7A1, 7A2, 7B1 and 7B2), the solid flow meters (10A1, 10A2, 10B1 and 10B2) and the electric regulating valves (12A1, 12A2, 12B1 and 12B2) are all controlled by a CPU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922423948.9U CN211689125U (en) | 2019-12-30 | 2019-12-30 | Combined online maintenance type coal injection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922423948.9U CN211689125U (en) | 2019-12-30 | 2019-12-30 | Combined online maintenance type coal injection system |
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| CN211689125U true CN211689125U (en) | 2020-10-16 |
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| CN201922423948.9U Active CN211689125U (en) | 2019-12-30 | 2019-12-30 | Combined online maintenance type coal injection system |
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| CN (1) | CN211689125U (en) |
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