CN113930557A - Bleed pipeline between coal injection system valves - Google Patents
Bleed pipeline between coal injection system valves Download PDFInfo
- Publication number
- CN113930557A CN113930557A CN202111092170.3A CN202111092170A CN113930557A CN 113930557 A CN113930557 A CN 113930557A CN 202111092170 A CN202111092170 A CN 202111092170A CN 113930557 A CN113930557 A CN 113930557A
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- China
- Prior art keywords
- pressure relief
- blowing
- blow
- main pipe
- pipe
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
- C21B5/001—Injecting additional fuel or reducing agents
- C21B5/003—Injection of pulverulent coal
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B7/00—Blast furnaces
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning In General (AREA)
Abstract
The invention discloses a bleeding pipeline between valves of a coal injection system, which relates to the technical field of coal injection systems and comprises a pressure relief main pipe; the plurality of injection tanks are communicated with the pressure relief main pipe through pressure relief branch pipes; and the two blow-off pipes are respectively communicated with two ends of the pressure relief main pipe and used for blowing off gas introduced into the pressure relief main pipe. According to the invention, the blowing pipe is additionally arranged at the tail end of the pipeline of the pressure relief main pipe, and nitrogen is blown into the pressure relief main pipe through the blowing pipe, so that the condition of coal dust accumulation in the inter-valve blowing main pipe can be effectively reduced, the heavy stability of the injection tank is ensured, and the stability of conveying coal dust for injection is improved.
Description
Technical Field
The invention relates to the technical field of coal injection systems, in particular to a bleeding pipeline between valves of a coal injection system.
Background
The coal injection system generally realizes the purpose of conveying pulverized coal to the blast furnace through a plurality of injection tanks, and is main equipment for reducing energy consumption and improving coal ratio of the blast furnace. In the operation process of the existing coal injection system, because a common pressure relief main pipe is diffused among the valves of a plurality of injection pipes to the top of the pulverized coal bunker to realize the pressure relief function, the injection tank can be abnormal in weight change due to the leakage of the dome valve, and the stability of pulverized coal injection conveying is further influenced.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects of the prior art and provides a bleeding pipeline between valves of a coal injection system.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a bleeding pipeline between valves of a coal injection system, which comprises,
a pressure relief manifold;
the plurality of injection tanks are communicated with the pressure relief main pipe through pressure relief branch pipes; and the number of the first and second groups,
and the two blow-off pipes are respectively communicated with two ends of the pressure relief main pipe and used for blowing off gas introduced into the pressure relief main pipe.
As a preferable scheme of the bleed line between the valves of the coal injection system, the invention comprises the following steps: the blowing pipe is characterized by further comprising two blowing valves, wherein the two blowing valves are respectively arranged on the two blowing pipes and used for controlling the on-off of the blowing pipes.
As a preferable scheme of the bleed line between the valves of the coal injection system, the invention comprises the following steps: the blow-off valve is a pneumatic valve.
As a preferable scheme of the bleed line between the valves of the coal injection system, the invention comprises the following steps: and a manual valve is arranged between the blow-off valve and the pressure relief main pipe.
As a preferable scheme of the bleed line between the valves of the coal injection system, the invention comprises the following steps: the blow-off pipe is communicated with the nitrogen storage tank.
As a preferable scheme of the bleed line between the valves of the coal injection system, the invention comprises the following steps: six blowing tanks are arranged.
The invention has the beneficial effects that:
(1) according to the invention, the blowing pipe is additionally arranged at the tail end of the pipeline of the pressure relief main pipe, and nitrogen is blown into the pressure relief main pipe through the blowing pipe, so that the condition of coal dust accumulation in the inter-valve blowing main pipe can be effectively reduced, the heavy stability of the injection tank is ensured, and the stability of conveying coal dust for injection is improved.
(2) According to the invention, each blow-off pipe is provided with the blow-off valve, and the irregular blow-off of the blow-off pipes is realized through the control of the blow-off valves, so that the nitrogen blow-off can be carried out according to actual requirements.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
FIG. 1 is a schematic view of a bleed line between valves of a coal injection system according to the present invention;
wherein: 1. a pressure relief manifold; 2. a pressure relief branch pipe; 3. a blow-off pipe; 4. a blow-off valve; 5. a pulverized coal bunker.
Detailed Description
In order that the present invention may be more readily and clearly understood, a more particular description of the invention briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
This embodiment provides a coal injection system valve room blow-off pipeline, including pressure release house steward 1, jetting jar and blow-off pipe 3.
Wherein, the jetting jar is provided with six, is the jetting jar No. one, No. two jetting jars, No. three jetting jars, No. four jetting jars, No. five jetting jars and No. six jetting jars respectively. The six blowing tanks are respectively communicated with a pressure relief main pipe 1 through pressure relief branch pipes 2. The pressure relief branch pipe 2 of the third injection tank and the pressure relief branch pipe 2 of the sixth injection tank are connected to the same position of the pressure relief main pipe 1. The pressure relief branch pipe 2 of the fourth injection tank and the pressure relief branch pipe 2 of the fifth injection tank are connected to the same position of the pressure relief main pipe 1.
The number of the blow-off pipes 3 is two, and the blow-off pipes are respectively connected to two ends of the pressure relief main pipe 1. The other end of the blow-off pipe 3 is communicated with a nitrogen storage tank. Blow off pipe 3 can be with nitrogen gas jetting in the nitrogen gas storage tank to pressure release house steward 1 in, reduce the accumulational situation of the inside buggy of pressure release house steward 1, ensured the heavy stability of jetting jar, improved the stability of carrying buggy jetting.
In addition, a blow-off valve 4 is installed on each blow-off pipe 3. The blow-off valve 4 is used for controlling the on-off of the blow-off pipe 3. The irregular blowing of the blowing pipe 3 is realized through the control of the blowing valve 4, so that the nitrogen blowing can be carried out according to actual requirements.
And a manual valve is also arranged between the blow-off valve and the pressure relief main pipe, so that the pneumatic valve 4 can be conveniently closed as a maintenance valve when in failure, and the blow-off valve 4 can be replaced.
In the present embodiment, the blow-off valve 4 is a pneumatic valve. In addition to the above embodiments, the present invention may have other embodiments; all technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (6)
1. The utility model provides a blow-off pipeline between coal injection system valve which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
a pressure relief manifold (1);
the plurality of injection tanks are arranged and communicated with the pressure relief main pipe (1) through pressure relief branch pipes (2); and the number of the first and second groups,
and the blow-off pipes (3) are provided with two pipes, are respectively communicated with two ends of the pressure relief header pipe (1), and are used for blowing off gas introduced into the pressure relief header pipe (1).
2. The intervalve bleed line of a coal injection system of claim 1, wherein: the blowing pipe is characterized by further comprising two blowing valves (4), wherein the two blowing valves (4) are respectively arranged on the two blowing pipes (3) and used for controlling the on-off of the blowing pipes (3).
3. The intervalve bleed line of a coal injection system of claim 2, wherein: the blow-off valve (4) is a pneumatic valve.
4. The intervalve bleed line of a coal injection system of claim 2, wherein: and a manual valve is arranged between the blow-off valve (4) and the pressure relief main pipe (1).
5. The intervalve bleed line of a coal injection system of claim 1, wherein: the blow-off pipe (3) is communicated with the nitrogen storage tank.
6. The intervalve bleed line of a coal injection system of claim 1, wherein: six blowing tanks are arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111092170.3A CN113930557A (en) | 2021-09-17 | 2021-09-17 | Bleed pipeline between coal injection system valves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111092170.3A CN113930557A (en) | 2021-09-17 | 2021-09-17 | Bleed pipeline between coal injection system valves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113930557A true CN113930557A (en) | 2022-01-14 |
Family
ID=79276082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111092170.3A Pending CN113930557A (en) | 2021-09-17 | 2021-09-17 | Bleed pipeline between coal injection system valves |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113930557A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116497165A (en) * | 2023-05-16 | 2023-07-28 | 大峘集团有限公司 | Blowing tank pressure relief device of intelligent blowing system of blast furnace and working method thereof |
-
2021
- 2021-09-17 CN CN202111092170.3A patent/CN113930557A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116497165A (en) * | 2023-05-16 | 2023-07-28 | 大峘集团有限公司 | Blowing tank pressure relief device of intelligent blowing system of blast furnace and working method thereof |
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