CN205893296U - Blast furnace oxygen boosting valves - Google Patents
Blast furnace oxygen boosting valves Download PDFInfo
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- CN205893296U CN205893296U CN201620848323.0U CN201620848323U CN205893296U CN 205893296 U CN205893296 U CN 205893296U CN 201620848323 U CN201620848323 U CN 201620848323U CN 205893296 U CN205893296 U CN 205893296U
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- valve
- oxygen
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Abstract
The utility model discloses a blast furnace oxygen boosting valves, including the person in charge who carries oxygen, its characterized in that, the person in charge connect between oxygen generating apparatus and fan, be responsible for the one end of being connected with oxygen generating apparatus and has set up first manual stop valve, the person in charge has set up the manual stop valve of second with the one end that the fan is connected, has set up safety and diffuse the valve between first manual stop valve and the manual stop valve of second to diffusing in safety and having set up the pneumatics that is controlled by control system between valve and the manual stop valve of second and cut the valve soon, the pneumatics is cut soon and is set up the governing valve between valve and the manual stop valve of second. Blast furnace oxygen boosting valves simple structure, convenient operation stability is high, improves the reliable security that the oxygen boosting was supplied with, the transmission capacity of accurate control oxygen avoids appearing the too high or too high situation that leads to burning or explosion of concentration of oxygen pressure, support equipment life.
Description
Technical field
This utility model is related to rich-oxygen of blast furnace technique for blast field, more particularly, to a kind of rich-oxygen of blast furnace valve group.
Background technology
Oxygen-enriched air blast is to add industrial oxygen in blast furnace atmospheric blast, to improve air blast oxygen concentration, is equivalent to and increased
The blow rate required, strengthening tuyere area fuel combustion, thus improving pig iron yield, being a kind of intensification of smelting process in BF technology.Oxygen-enriched air blast energy
Enough improve the ignition temperature before blast-furnace tuyere, compensated with amount of heat to blast furnace, thus increasing injecting coal quantity wound further to blast furnace
Make condition, general oxygen enrichment percentage improves 1% can make breeze blowing rate increase by 6%, and oxygen enrichment percentage improves 3～4% and is equivalent to air blast
Pathogenic wind-warm improves 200 DEG C.As long as oxygen-enriched two kinds after the organic front oxygen-enriched and machine of rich-oxygen of blast furnace air blast, after after machine, oxygen-enriched mode is because of aerator
Air duct pressure is high, could send into airduct after needing low oxygen pressurizes, so needing to consume substantial amounts of electric energy for compressed oxygen
Gas, and the oxygen-enriched suction inlet that low oxygen then can directly be sent into aerator before machine, greatly reduce energy consumption needed for work, from
And reduce steel-making cost.
Oxygen content close relation in ignition point and oxygen-enriched air, that is, in oxygen-enriched air, oxygen content more Gao Zeqi catches fire
Point is lower, with oxygen-enriched air pressure to increase then its ignition temperature also lower, during conveying oxygen, oxygen should be prevented
Mixing is uneven, and local oxygen concentration is too high and the burning that causes or blast.Existing rich-oxygen of blast furnace valve group safety in utilization is low,
It is difficult to the conveying of effective control oxygen, there is burning or the risk of blast.
Utility model content
Technical problem to be solved in the utility model and the technical assignment proposing are that prior art is improved, and provide
A kind of rich-oxygen of blast furnace valve group, solve rich-oxygen of blast furnace valve group safety in utilization in current technology low it is difficult to effective control oxygen
, there is the risk burnt or explode in conveying.
For solving above technical problem, the technical solution of the utility model is:
A kind of rich-oxygen of blast furnace valve group, including conveying oxygen supervisor it is characterised in that described supervisor is connected to oxygen sends out
Between generating apparatus and blower fan, it is responsible for the one end being connected with oxygen generator and is provided with first manual stop valve, supervisor and blower fan
The one end connecting is provided with the second hand stop valve, is provided with safety between first manual stop valve and the second hand stop valve
Diffusion valve, and be provided between Safety relief valve and the second hand stop valve and be controlled by the pneumatic of control system and cut valve soon,
Pneumatic cutting soon arranges regulating valve between valve and the second hand stop valve.Rich-oxygen of blast furnace valve group described in the utility model realizes blast furnace
Oxygen-enriched air blast, achievable long-range and local control, easy to operate, safe to use, the conveying of energy effective control oxygen, defeated
When the oxygen pneumatic sent, flow go wrong can pressure release in time and cut-off, be prevented effectively from the situation that burning or blast occur.
Further, described Safety relief valve and pneumatic cut soon between valve, pneumatic cut soon between valve and regulating valve and
Pressure transmitter is also respectively provided with the supervisor between regulating valve and the second hand stop valve, monitor in real time is responsible for circulation path
Upper each section of air pressure, it is ensured that the work of rich-oxygen of blast furnace valve group normal table, reliability height, safeguards simple, light, small volume, weight
Gently, installation and debugging are convenient.
Further, described Safety relief valve and the pneumatic supervisor cutting soon between valve are additionally provided with flow-through orifice, knot
Structure is simple, easy to maintenance, accurately monitors flow.
Further, the supervisor between described regulating valve and the second hand stop valve is additionally provided with first check-valve,
Anti- backflow, ensures oxygen stable supplying.
Further, the supervisor between described regulating valve and first check-valve is communicated with nitrogen pipeline, nitrogen pipeline
On be provided with Quick open valve, make when needed high pressure nitrogen enter blower fan intake stack, dilution oxygen concentration, protect unit
Blade and the generation preventing combustion explosion accident；Can purge in supervisor in maintenance simultaneously, or in long rich-oxygen of blast furnace valve
The group time enters line replacement to the gas in supervisor when stopping using as a servant, and realizes nitrogen filled protection.
Further, described nitrogen pipeline is additionally provided with the anti-backflow of second check-valve.
Compared with prior art, this utility model advantage is:
Rich-oxygen of blast furnace valve block structure described in the utility model is simple, it is easy to accomplish, easy to operate stability is high, improves rich
The secure safety of oxygen supply, the conveying capacity of precise control oxygen, it is to avoid occur that oxygen pressure is too high or excessive concentration leads to fire
The situation burnt or explode, ensures service life of equipment.
Brief description
Fig. 1 is structural representation of the present utility model.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely description is it is clear that described embodiment is only a part of embodiment of this utility model rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of making creative work
The every other embodiment being obtained, broadly falls into the scope of this utility model protection.
A kind of rich-oxygen of blast furnace valve group disclosed in this utility model embodiment, improves the safety running, precise control oxygen
Conveying capacity, it is to avoid occur that oxygen pressure is too high or excessive concentration lead to the situation burning or explode, ensure service life of equipment,
Safe operation is reliable.
As shown in figure 1, a kind of rich-oxygen of blast furnace valve group, including the supervisor 1 of conveying oxygen, described supervisor 1 is connected to oxygen
Between generating meanss 2 and blower fan 3, one end that supervisor 1 is connected with oxygen generator 2 is provided with first manual stop valve 4, supervisor
1 one end being connected with blower fan 3 is provided with the second hand stop valve 5, using first manual stop valve 4 and the second hand stop valve 5
Realize local control, between first manual stop valve 4 and the second hand stop valve 5, be provided with Safety relief valve 6, in conveying oxygen
When atmospheric pressure exceedes setting value (bubble eruption pressure), discharge a certain amount of oxygen, improve safety, and in Safety relief valve
6 and second are provided between hand stop valve 5 and are controlled by the pneumatic valve 7 of cutting soon of control system and realize remotely control, remotely control
Be located at blast furnace Central Control Room, lead to burn or explosion time blocks the conveying of oxygen in time oxygen concentration is too high, pneumatic cut soon valve 7 with
Between second hand stop valve 5, setting regulating valve 8 adjusts oxygen feed flow, and Safety relief valve 6 with pneumatic cut soon valve 7 it
Between, pneumatic cut between valve 7 and regulating valve 8 soon and regulating valve 8 and the second hand stop valve 5 between supervisor 1 on also set respectively
Be equipped with pressure transmitter 9, monitor in real time be responsible for 1 each section on oxygen delivery pressure it is ensured that rich-oxygen of blast furnace valve group stablize normal
Work, can block oxygen conveying in time when pressure anomaly.
Flow-through orifice 10 monitoring flow is additionally provided with Safety relief valve 6 and the pneumatic supervisor 1 cutting soon between valve 7, adjusts
It is additionally provided with first check-valve 11 on supervisor 1 between valve 8 and the second hand stop valve 5, and in regulating valve 8 and the first non-return
Nitrogen pipeline 12 is communicated with the supervisor 1 between valve 11, nitrogen pipeline 12 is provided with Quick open valve 13, on nitrogen pipeline 12
It is additionally provided with second check-valve 14, utilize nitrogen pipeline conveying high-pressure nitrogen to enter the intake stack dilution oxygen of blower fan when needed
Gas concentration, protects unit, also can achieve nitrogen filled protection simultaneously, ensures the service life of rich-oxygen of blast furnace valve group.
The above is only preferred implementation of the present utility model it is noted that above-mentioned preferred implementation should not regard
It is to restriction of the present utility model, protection domain of the present utility model should be defined by claim limited range.For
For those skilled in the art, without departing from spirit and scope of the present utility model, can also make some
Improvements and modifications, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (6)
1. a kind of rich-oxygen of blast furnace valve group, including conveying oxygen supervisor (1) it is characterised in that described supervisor (1) is connected to oxygen
Between gas generating meanss (2) and blower fan (3), one end that supervisor (1) is connected with oxygen generator (2) is provided with first manual and cuts
Only valve (4), one end that supervisor (1) is connected with blower fan (3) is provided with the second hand stop valve (5), in first manual stop valve (4)
It is provided with Safety relief valve (6) and the second hand stop valve (5) between, and in Safety relief valve (6) and the second manual shutoff
It is provided between valve (5) and is controlled by the pneumatic of control system and cuts valve (7) soon, pneumatic cut valve (7) and the second hand stop valve (5) soon
Between setting regulating valve (8).
2. rich-oxygen of blast furnace valve group according to claim 1 is it is characterised in that described Safety relief valve (6) is fast with pneumatic
Cut between valve (7), pneumatic cut soon between valve (7) and regulating valve (8) and between regulating valve (8) and the second hand stop valve (5)
Supervisor (1) on be also respectively provided with pressure transmitter (9).
3. rich-oxygen of blast furnace valve group according to claim 1 is it is characterised in that described Safety relief valve (6) is fast with pneumatic
Cut and be additionally provided with flow-through orifice (10) on the supervisor (1) between valve (7).
4. rich-oxygen of blast furnace valve group according to claim 1 is it is characterised in that described regulating valve (8) is cut manually with second
Only it is additionally provided with first check-valve (11) on the supervisor (1) between valve (5).
5. rich-oxygen of blast furnace valve group according to claim 4 is it is characterised in that described regulating valve (8) and first check-valve
(11) nitrogen pipeline (12) is communicated with the supervisor (1) between, nitrogen pipeline (12) is provided with Quick open valve (13).
6. rich-oxygen of blast furnace valve group according to claim 5 is it is characterised in that be additionally provided with described nitrogen pipeline (12)
Second check-valve (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620848323.0U CN205893296U (en) | 2016-08-08 | 2016-08-08 | Blast furnace oxygen boosting valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620848323.0U CN205893296U (en) | 2016-08-08 | 2016-08-08 | Blast furnace oxygen boosting valves |
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| Publication Number | Publication Date |
|---|---|
| CN205893296U true CN205893296U (en) | 2017-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620848323.0U Active CN205893296U (en) | 2016-08-08 | 2016-08-08 | Blast furnace oxygen boosting valves |
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| CN (1) | CN205893296U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107354254A (en) * | 2017-07-31 | 2017-11-17 | 中冶华天南京电气工程技术有限公司 | Oxygen-enriched system and the control method of oxygen enrichment percentage before a kind of blast furnace machine |
| CN112797440A (en) * | 2021-01-15 | 2021-05-14 | 山东京博石油化工有限公司 | Oxygen-enriched combustion control system of heating furnace and control method thereof |
-
2016
- 2016-08-08 CN CN201620848323.0U patent/CN205893296U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107354254A (en) * | 2017-07-31 | 2017-11-17 | 中冶华天南京电气工程技术有限公司 | Oxygen-enriched system and the control method of oxygen enrichment percentage before a kind of blast furnace machine |
| CN112797440A (en) * | 2021-01-15 | 2021-05-14 | 山东京博石油化工有限公司 | Oxygen-enriched combustion control system of heating furnace and control method thereof |
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