CN204311071U - A kind of making-up air device and injection system thereof - Google Patents
A kind of making-up air device and injection system thereof Download PDFInfo
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- CN204311071U CN204311071U CN201420793956.7U CN201420793956U CN204311071U CN 204311071 U CN204311071 U CN 204311071U CN 201420793956 U CN201420793956 U CN 201420793956U CN 204311071 U CN204311071 U CN 204311071U
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Abstract
The utility model relates to a kind of making-up air device and injection system thereof, and making-up air device comprises Nitrogen source gases, inlet pipe, source of the gas distribution piping, blowdown pipe and mixing tank; One end of described inlet pipe is communicated with Nitrogen source gases, and the other end of inlet pipe is communicated with source of the gas distribution piping, and described source of the gas distribution piping is communicated with many blowdown pipes, and the free end of every root blowdown pipe connects mixing tank; Described blowdown pipe has one section of high pressure hose near the part of mixing tank, and blowdown pipe is provided with control valve assembly between the junction of high pressure hose to source of the gas distribution piping.This making-up air device structure is simple, easy to use, each coal powder injection main pipe of each injection system increases making-up air device, reduces the resistance of coal dust in supervisor and damage, suitable reduction breeze blowing, to the high tank pressure demand of winding-up tank, is guaranteed to ensure that blast furnace is normally jetted to greatest extent when elevated pressure nitrogen pressure is lower.
Description
Technical field
The utility model relates to coal ironmaking technology field, is specifically related to a kind of making-up air device and injection system thereof.
Background technology
In ironmaking enterprise, working district comprises overlaps injection system more, often overlaps an injection system correspondence winding-up blast furnace, adopts direct blowing process.But in actual production process, the usually normal coal powder injection of injection system because of many cause influences, wherein nitrogen pressure is one of them larger bottleneck, often because nitrogen pressure is low, flow is low or fluctuation is comparatively large on the impact of injection system blowing tank pressure greatly or cause nitrogen use level not enough, and then cause the fluctuation of coal dust instantaneous winding-up amount large, hour accumulative coal injection amount and blast furnace require that the winding-up amount set differs greatly, even sometimes, cause the sudden stop-spraying of injection system, badly influence the stable smooth operation of coal injection system, cause the fluctuation of conditions of blast furnace to a certain extent.
Utility model content
For the problems referred to above that prior art exists, an object of the present utility model is: provide a kind of structure simple, easy to use, and effectively can reduce the making-up air device that coal dust damages in coal powder injection main pipe internal resistance.
Another object of the present utility model is: provide a kind of injection system utilizing above-mentioned making-up air device.
For realizing above-mentioned first object, the utility model adopts following technical scheme: a kind of making-up air device, comprises Nitrogen source gases, inlet pipe, source of the gas distribution piping, blowdown pipe and mixing tank; One end of described inlet pipe is communicated with Nitrogen source gases, and the other end of inlet pipe is communicated with source of the gas distribution piping; Described source of the gas distribution piping is communicated with many blowdown pipes, and the free end of every root blowdown pipe connects mixing tank; Described blowdown pipe has one section of high pressure hose near the part of mixing tank, and blowdown pipe is provided with control valve assembly between the junction of high pressure hose to source of the gas distribution piping.
As optimization, described control valve assembly, from the junction near blowdown pipe and source of the gas distribution piping to away from this junction, comprises the hand stop valve, pneumatic adjusting valve and the pneumatic stopping valve that set gradually.
As optimization, the part of described blowdown pipe between high pressure hose and mixing tank is provided with flange.
As optimization, described every root blowdown pipe is provided with gas meter.
For realizing above-mentioned second object, the utility model adopts following technical scheme: a kind of injection system, is characterized in that: comprise many coal powder injection main pipes and making-up air device, the structure that described making-up air device is above-mentioned; Described making-up air device is communicated with every root coal powder injection main pipe respectively by the mixing tank on blowdown pipe free end.
Relative to prior art, the utility model tool has the following advantages:
1, the making-up air device structure that provides of the utility model is simple, easy to use, each coal powder injection main pipe of each injection system increases making-up air device, reduce the resistance of coal dust in supervisor to damage, suitable reduction breeze blowing, to the high tank pressure demand of winding-up tank, is guaranteed to ensure that blast furnace is normally jetted to greatest extent when elevated pressure nitrogen pressure is lower.
2, the setting of this making-up air device, blowing tank pressure is made to reduce about 10% on the original basis, directly reduce the wearing and tearing of coal dust to the whole coal powder injection house steward on the way equipment such as pipeline and valve, major equipment comprises the valve that produces coal, under meter, variable valve, divider etc. on the way.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model making-up air device.
Fig. 2 is the sectional view that Figure 1A-A locates.
Drawing reference numeral illustrates: Nitrogen source gases 10, inlet pipe 20, throttling orifice plate 21, vacuum breaker 22, switch-valve 23, source of the gas distribution piping 30, blowdown pipe 40, hand stop valve 41, pneumatic adjustment 42, pneumatic stopping valve 43, high pressure hose 44, flange 45, mixing tank 46, coal powder injection main pipe 50.
Arrow in accompanying drawing represents gas flow direction.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
In description of the present utility model, the implication of " multiple " is two or more, the noun of locality used such as " upper and lower " is that the using state of the making-up air device provided at the utility model is undefined, and the term " upstream " of use defines relative to gas flow direction.
embodiment 1:see Fig. 1 and Fig. 2, a kind of making-up air device, comprises Nitrogen source gases, inlet pipe, source of the gas distribution piping, blowdown pipe and mixing tank.
One end of inlet pipe is communicated with Nitrogen source gases, and the other end of inlet pipe is communicated with source of the gas distribution piping.Inlet pipe can be integrally formed with source of the gas distribution piping, also can be formed respectively with source of the gas distribution piping, then connected by the mode of welding.Between inlet pipe and source of the gas distribution piping, usually need between source of the gas distribution piping and blowdown pipe to seal, such as, sealed by the sealing material of various routine.In order to control the flow of gas easily, inlet pipe is provided with throttling orifice plate.In order to prevent ash from flowing back in gas source pipe, inlet pipe can also install vacuum breaker, this vacuum breaker is positioned at the upstream of throttling orifice plate.Conveniently overhaul, inlet pipe is provided with switch-valve, this switch-valve is positioned at the upstream of vacuum breaker.Throttling orifice plate, vacuum breaker and the switch-valve mounting means in inlet pipe is conventionally known to one of skill in the art, does not repeat them here.
Source of the gas distribution piping is communicated with many blowdown pipes, the free end of every root blowdown pipe connects mixing tank; One end of blowdown pipe is used for being communicated with source of the gas distribution piping, and the other end of blowdown pipe and free end connect mixing tank, and this mixing tank adopts prior art, and it acts on is being communicated with of being sealed with coal powder injection main pipe by blowdown pipe.
Blowdown pipe has one section of high pressure hose near the part of mixing tank, and blowdown pipe is provided with control valve assembly between the junction of high pressure hose to source of the gas distribution piping, realizes accessibility and the accuracy of control.Control valve assembly, from the junction near blowdown pipe and source of the gas distribution piping to away from this junction, comprises the hand stop valve, pneumatic adjusting valve and the pneumatic stopping valve that set gradually.
The part of blowdown pipe between high pressure hose and mixing tank is provided with flange, and convenient supervisor with other coal gas is tightly connected.In order to pay close attention to the flow in every root blowdown pipe constantly, understanding the situation of nitrogen in coal powder injection main pipe, preferably a gas meter is set on root blowdown pipe.
embodiment 2:see Fig. 1 and Fig. 2, a kind of injection system, comprises many coal powder injection main pipes and making-up air device, and described making-up air device adopts the structure described in embodiment 1; Making-up air device is communicated with every root coal powder injection main pipe respectively by the mixing tank on blowdown pipe free end.
Described making-up air device is arranged on 1/2nd places of each coal powder injection house steward of blast furnace blowing respectively.Require N
2pressure>=1.5Mpa, flow>=1000Nm
3/ h.Because the position of making-up air device is slightly near with blast furnace distance by contrast, therefore the Nitrogen source gases of whole making-up air device can overlap nearby on each blast furnace spray gun cooling source of the gas, avoids unnecessary nitrogen pressure drop.
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 technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.
Claims (5)
1. a making-up air device, is characterized in that: comprise Nitrogen source gases, inlet pipe, source of the gas distribution piping, blowdown pipe and mixing tank;
One end of described inlet pipe is communicated with Nitrogen source gases, and the other end of inlet pipe is communicated with source of the gas distribution piping;
Described source of the gas distribution piping is communicated with many blowdown pipes, and the free end of every root blowdown pipe connects mixing tank; Described blowdown pipe has one section of high pressure hose near the part of mixing tank, and blowdown pipe is provided with control valve assembly between the junction of high pressure hose to source of the gas distribution piping.
2. making-up air device as claimed in claim 1, is characterized in that: described control valve assembly, from the junction near blowdown pipe and source of the gas distribution piping to away from this junction, comprises the hand stop valve, pneumatic adjusting valve and the pneumatic stopping valve that set gradually.
3. making-up air device as claimed in claim 1, is characterized in that: the part of described blowdown pipe between high pressure hose and mixing tank is provided with flange.
4. the making-up air device as described in any one of claims 1 to 3, is characterized in that: described every root blowdown pipe is provided with gas meter.
5. an injection system, is characterized in that: comprise many coal powder injection main pipes and making-up air device, and described making-up air device adopts making-up air device according to claim 1;
Described making-up air device is communicated with every root coal powder injection main pipe respectively by the mixing tank on blowdown pipe free end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420793956.7U CN204311071U (en) | 2014-12-16 | 2014-12-16 | A kind of making-up air device and injection system thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420793956.7U CN204311071U (en) | 2014-12-16 | 2014-12-16 | A kind of making-up air device and injection system thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204311071U true CN204311071U (en) | 2015-05-06 |
Family
ID=53133396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420793956.7U Expired - Fee Related CN204311071U (en) | 2014-12-16 | 2014-12-16 | A kind of making-up air device and injection system thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204311071U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111074024A (en) * | 2019-12-26 | 2020-04-28 | 青岛恒拓环保科技有限公司 | Coal injection magnetic force fluidization type filter device |
-
2014
- 2014-12-16 CN CN201420793956.7U patent/CN204311071U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111074024A (en) * | 2019-12-26 | 2020-04-28 | 青岛恒拓环保科技有限公司 | Coal injection magnetic force fluidization type filter device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150506 Termination date: 20181216 |
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| CF01 | Termination of patent right due to non-payment of annual fee |