CN204198763U - A kind of coal jetting branch of blast furnace purges structure - Google Patents
A kind of coal jetting branch of blast furnace purges structure Download PDFInfo
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- CN204198763U CN204198763U CN201420703697.4U CN201420703697U CN204198763U CN 204198763 U CN204198763 U CN 204198763U CN 201420703697 U CN201420703697 U CN 201420703697U CN 204198763 U CN204198763 U CN 204198763U
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- coal dust
- coal
- valve
- arm
- nitrogen pipeline
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Abstract
The utility model discloses a kind of coal jetting branch of blast furnace and purge structure, comprise pulverized coal distributor and the connected coal dust supervisor of difference and coal dust arm, described coal dust supervisor is connected with nitrogen pipeline, described nitrogen pipeline is provided with nitrogen trip valve, described coal dust arm is connected with pneumatic line, described coal dust arm end is also connected with pulverized coal gun, described nitrogen pipeline also with pneumatic line UNICOM, the pipeline of described nitrogen pipeline and pneumatic line UNICOM is provided with reversing valve.Nitrogen pipeline is communicated with compressed air line by the utility model, for subsequent use each other, effectively can overcome compressed air pressure inadequate, cause the problem that cooling performance is not good enough.The utility model adopts T-valve to replace the trip valve of coal dust arm and pressurized air arm simultaneously, by arranging by-pass line and valve, can realize on-bne repair or replacing, raising the efficiency, reducing costs.
Description
Technical field
The utility model belongs to blast-furnace coal powder and distributes and control field, is specifically related to a kind of coal jetting branch of blast furnace and purges structure.
Background technology
As the key means optimizing blast furnace energy structure, furnace coal spraying technology has developed into the indispensable process procedure of iron industry.Current furnace coal spraying technology is progressively shifted as " economic coal powder injection ", " all spraying ", " surely spraying " by traditional " big coal injection ".
Blast-furnace coal powder carries out uniformly distributing by divider, ensures that each air port section is even by coal, thus reaches the object of all spraying, surely spraying.In conventional design, nitrogen pipeline is responsible for the coal dust before divider and is connected, and adopts nitrogen to purge when coal dust supervisor or divider blocking.Compressed air line is connected with each coal dust arm, and coal dust arm and pressurized air arm respectively establish a trip valve, realizes the orderly switching between coal dust and pressurized air by employing reverse interlocking.Pressurized air can be adopted when coal dust props up blockage to purge, when arm stops coal powder injection, for before guarantee air port, spray gun is not burnt, pressure-air cooling spray gun can be adopted.But in actual production, often occur that compressed air pressure is inadequate, cause cooling performance not good enough.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of coal jetting branch of blast furnace and purges structure, overcomes the above-mentioned defect of prior art.
The purpose of this utility model is achieved through the following technical solutions:
A kind of coal jetting branch of blast furnace purges structure, comprise pulverized coal distributor and the connected coal dust supervisor of difference and coal dust arm, described coal dust supervisor is connected with nitrogen pipeline, described nitrogen pipeline is provided with nitrogen trip valve, described coal dust arm is connected with pneumatic line, described coal dust arm end is also connected with pulverized coal gun, described nitrogen pipeline also with pneumatic line UNICOM, the pipeline of described nitrogen pipeline and pneumatic line UNICOM is provided with reversing valve.
Further, by T-valve UNICOM between described pneumatic line and coal dust branch road, coal dust branch road is separated into coal dust branch road I and coal dust branch road II by described T-valve, and described coal dust branch road I is connected with pulverized coal distributor, and described pulverized coal gun is arranged on the end of coal dust branch road II.
Further, be also provided with by-pass line between described coal dust branch road I and coal dust branch road II, described by-pass line is also provided with valve.
The beneficial effects of the utility model are: nitrogen pipeline is communicated with compressed air line by the utility model, for subsequent use each other, effectively can overcome compressed air pressure inadequate, cause the problem that cooling performance is not good enough.The utility model adopts T-valve to replace the trip valve of coal dust arm and pressurized air arm simultaneously, by arranging by-pass line and valve, can realize on-bne repair or replacing, raising the efficiency, reducing costs.
Other advantages of the present utility model, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, or can be instructed from practice of the present utility model.Target of the present utility model and other advantages can be realized by specification sheets below and obtain.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model is described in further detail, wherein:
Fig. 1 is the utility model structural representation.
Embodiment
Hereinafter with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail.Should be appreciated that preferred embodiment only in order to the utility model is described, instead of in order to limit protection domain of the present utility model.
As shown in the figure, a kind of coal jetting branch of blast furnace purges structure, comprise pulverized coal distributor 1 and the connected coal dust supervisor 2 of difference and coal dust arm, described coal dust supervisor is connected with nitrogen pipeline 5, described nitrogen pipeline is provided with nitrogen trip valve 3, described coal dust arm is connected with pneumatic line 6, described coal dust arm end is also connected with pulverized coal gun 7, described nitrogen pipeline 5 also with pneumatic line 6 UNICOM, described nitrogen pipeline 5 and the pipeline of pneumatic line 6 UNICOM are provided with reversing valve 4.
In the present embodiment, in order to purge coal dust supervisor 2, pulverized coal distributor 1 and coal dust arm, coal dust supervisor be connected with nitrogen pipeline 5; When coal dust arm stops coal powder injection, in order to cool pulverized coal gun 7, coal dust arm is connected with pneumatic line 6; In order to realize nitrogen and pressurized air is for subsequent use each other, UNICOM between nitrogen pipeline and compressed air line also arranges cross over valve 4.
As further improvement of this embodiment, by T-valve 10 UNICOM between described pneumatic line and coal dust branch road, coal dust branch road is separated into coal dust branch road I 8 and coal dust branch road II 11 by described T-valve, described coal dust branch road I 8 is connected with pulverized coal distributor 1, and described pulverized coal gun 7 is arranged on the end of coal dust branch road II 11; In the present embodiment, in order to reduce costs, between compressed air line, coal dust arm one, coal dust arm two, adopt T-valve to connect, realize coal dust and compressed-air actuated orderly switching.
As further improvement of this embodiment, between described coal dust branch road I 8 and coal dust branch road II 11, be also provided with by-pass line 9, described by-pass line 9 is also provided with valve.The present embodiment, in order to realize online replacing and the maintenance of T-valve, is enhanced productivity, is arranged by-pass line and valve between coal dust arm one and coal dust arm two.
It can thus be appreciated that the coal jetting branch of blast furnace of the present embodiment purges structure, and structure is simple, reliable and stable, easy to use, cost-saving.
What finally illustrate is, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from aim and the scope of the technical program, it all should be encompassed in the middle of right of the present utility model.
Claims (3)
1. a coal jetting branch of blast furnace purges structure, comprise pulverized coal distributor and the connected coal dust supervisor of difference and coal dust arm, described coal dust supervisor is connected with nitrogen pipeline, described nitrogen pipeline is provided with nitrogen trip valve, described coal dust arm is connected with pneumatic line, described coal dust arm end is also connected with pulverized coal gun, it is characterized in that: described nitrogen pipeline also with pneumatic line UNICOM, the pipeline of described nitrogen pipeline and pneumatic line UNICOM is provided with reversing valve.
2. coal jetting branch of blast furnace according to claim 1 purges structure, it is characterized in that: by T-valve UNICOM between described pneumatic line and coal dust branch road, coal dust branch road is separated into coal dust branch road I and coal dust branch road II by described T-valve, described coal dust branch road I is connected with pulverized coal distributor, and described pulverized coal gun is arranged on the end of coal dust branch road II.
3. coal jetting branch of blast furnace according to claim 2 purges structure, it is characterized in that: be also provided with by-pass line between described coal dust branch road I and coal dust branch road II, described by-pass line is also provided with valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420703697.4U CN204198763U (en) | 2014-11-20 | 2014-11-20 | A kind of coal jetting branch of blast furnace purges structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420703697.4U CN204198763U (en) | 2014-11-20 | 2014-11-20 | A kind of coal jetting branch of blast furnace purges structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204198763U true CN204198763U (en) | 2015-03-11 |
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| CN201420703697.4U Active CN204198763U (en) | 2014-11-20 | 2014-11-20 | A kind of coal jetting branch of blast furnace purges structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423038A (en) * | 2016-01-19 | 2016-03-23 | 西宁特殊钢股份有限公司 | Combined wear-resistant elbow of coal injection pipeline |
-
2014
- 2014-11-20 CN CN201420703697.4U patent/CN204198763U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105423038A (en) * | 2016-01-19 | 2016-03-23 | 西宁特殊钢股份有限公司 | Combined wear-resistant elbow of coal injection pipeline |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |