CN207376076U - A kind of coal powder lance for blast furnace anti-block apparatus - Google Patents
A kind of coal powder lance for blast furnace anti-block apparatus Download PDFInfo
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- CN207376076U CN207376076U CN201720640939.3U CN201720640939U CN207376076U CN 207376076 U CN207376076 U CN 207376076U CN 201720640939 U CN201720640939 U CN 201720640939U CN 207376076 U CN207376076 U CN 207376076U
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- check valve
- blast furnace
- coal powder
- way connector
- powder lance
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Abstract
The utility model discloses a kind of coal powder lance for blast furnace anti-block apparatus, mainly solve existing coal powder lance for blast furnace blocking, blocking is difficult to the technical issues of block clearing and block clearing are of high cost.The technical solution of the utility model is, a kind of coal powder lance for blast furnace anti-block apparatus, including three-way connector, pressure release check valve, first check valve, the input terminal of three-way connector is connected with the injection branch pipe of bf coal injection system, the output terminal of three-way connector is connected with the input terminal of the first check valve, the output terminal of first check valve is connected with coal powder lance for blast furnace, the latus rectum of first check valve is identical with the caliber of coal powder lance for blast furnace, three-way connector is a variable-diameter structure, pressure release is connected with check valve with the one side of three-way connector output terminal, the latus rectum of pressure release check valve is identical with the internal diameter of coal powder lance for blast furnace.The utility model is simple in structure, easy to operate, securely and reliably, manufactures the characteristics of low with maintenance cost.
Description
Technical field
The utility model is related to a kind of coal powder lance for blast furnace anti-block apparatus, belong to blast furnace ironmaking coal injection technology field.
Background technology
Blast furnace ironmaking is being still the main technique mode of ironmaking at this stage, in situation of the coal resources in China compared with horn of plenty
Under, coal injection technology is to reduce the effective means of blast furnace ton iron cost.
Coal enters by coal powder lance in blast furnace by drying, grinding, collecting coal dust, pressurization, injection system to coal powder lance
It burns in portion.It the conditions such as is produced, transported, stored by coal injection to be limited, the spiral shell of some small sizes can be often mixed in coal injection
The foreign matters such as cap, bolt, cloth, plastic film；The caliber of the injection branch pipe of bf coal injection system is more than the caliber of coal powder lance, injection
The caliber of branch pipe is usually 1 inch, and the caliber of coal powder lance is generally 6 scruples, in pulverized coal injection actual production process, coal injection
Coal powder lance is delivered to through being blown branch pipe, the foreign matter being mixed in coal injection is easily blocked at the ball valve of coal powder lance, causes coal powder injection
Rifle cisco unity malfunction.
The Chinese patent application of application publication number CN105112586A discloses a kind of coal powder injection apparatus of blast furnace, and the device is when spray
After coal rifle blocks, using closing blast furnace coal valve and opening the blast furnace unimpeded valve, the hot-blast pressure provided by blast-furnace tuyere will
Coal dust in coal powder lance is released.This method is in practical applications, hot since the hot blast temperature of blast-furnace tuyere is at 1000 DEG C or more
Wind blowback go out late gate, pipeline etc. can deform in a short time lead to not close blast furnace unimpeded valve, once can not be quick
It closes blast furnace unimpeded valve, injection tube, valve etc. and is easily blown by 1000 DEG C or more hot winds logical, there are job safeties.
The Chinese patent application of application publication number CN102230042A discloses coal injection branch pipes of distributor in blast furnace coal injection
Anti-blocking control method, the method are that one or more coal jetting branch coal powder injection operations are temporarily ceased during normal coal powder injection,
Gas purging is carried out, is starting coal powder injection operation after purging.This method is in practical applications, stifled in coal powder lance due to causing
The foreign matter of plug has the rigid foreign matter such as bolt, nut, also has the soft foreign matter such as plastic film, cloth, it is difficult to pass through simple gas
Purging thoroughly solves coal powder lance blockage problem.
Lack in the prior art and safely, effectively solve coal powder lance for blast furnace anti-blocking device and Method of blockage removal.
The content of the invention
The purpose of this utility model is to provide a kind of coal powder lance for blast furnace anti-block apparatus, mainly solves existing coal powder lance for blast furnace and blocks up
Plug, blocking are difficult to the technical issues of block clearing and block clearing are of high cost, can effectively prevent the blocking of coal powder lance for blast furnace, and coal injection system occurs
It, can rapid block-cleaning after blocking.
The technical solution of the utility model is a kind of coal powder lance for blast furnace anti-block apparatus, single including three-way connector, pressure release
To valve, the first check valve, the input terminal of three-way connector is connected with the injection branch pipe of bf coal injection system, three-way connector
Output terminal is connected with the input terminal of the first check valve, and the output terminal of the first check valve is connected with coal powder lance for blast furnace, and first is single
It is identical to the latus rectum of valve and the caliber of coal powder lance for blast furnace, it is characterized in that, three-way connector is a variable-diameter structure, is led to close to three
Connect the internal diameter phase of the internal diameter of three-way connector three/part of device input terminal one side and the injection branch pipe of bf coal injection system
Together, the internal diameter of two parts of its excess-three of three-way connector point is identical with the internal diameter of coal powder lance for blast furnace, pressure release check valve and threeway
The one side of connector output terminal is connected, and the latus rectum of pressure release check valve is identical with the internal diameter of coal powder lance for blast furnace.
Further, the coal powder lance for blast furnace anti-block apparatus, further includes, and is set between three-way connector and the first check valve
There are the second check valve and communicating pipe；The output terminal of three-way connector is connected with the input terminal of the second check valve, the second check valve
Output terminal be connected with the input terminal of the first check valve by communicating pipe, the latus rectum of the second check valve and the caliber of coal powder lance for blast furnace
It is identical.
The three-way connector for the reducing that the utility model device passes through setting will be mixed with some small rulers in coal injection
The foreign body from blocking such as very little nut, bolt, cloth, plastic film thoroughly solve the spray of foreign body from blocking blast furnace in three-way connector
The problem of coal rifle valve.
The utility model device is Split type structure, by setting pressure release check valve, after foreign body from blocking three-way connector,
Coal jetting branch is controlled to stop coal powder injection, closes the first check valve, opens pressure release check valve, quickly-detachable three-way connector is right
Inside accumulates foreign matter and carries out thorough cleaning, and the time of Pulverized Coal Injection System with Fuzzy block clearing is greatly shortened.
The utility model device is by setting the first check valve and the second check valve, after blocking Pulverized Coal Injection System with Fuzzy
The safety coefficient of effectively cut-out coal powder lance doubles, and prevents blast-furnace hot-air from blowing out, it is ensured that safety.
The utility model has following good effect compared with prior art：1st, the utility model is simple in structure, easy to operate,
Securely and reliably, the characteristics of low with maintenance cost is manufactured.2nd, blast furnace coal is greatly shortened by using Split type structure in the utility model
The time of powder injection system block clearing.
Description of the drawings
Fig. 1 is the utility model anti-block apparatus example structure schematic diagram
Fig. 2 is the utility model embodiment using state structure diagram
Description of symbols in figure：The injection branch pipe of 1- bf coal injection systems；2- three-way connectors；3- pressure release check valves；4-
Second check valve；5- communicating pipes；The first check valves of 6-；7- coal powder lance for blast furnace.
Specific embodiment
With reference to specific embodiment, the utility model is furtherd elucidate, it should be understood that following specific embodiments are only used for
Bright the utility model rather than limitation the scope of the utility model.
With reference to Fig. 1,2, a kind of coal powder lance for blast furnace anti-block apparatus is single with check valve 3, first including three-way connector 2, pressure release
To valve 6, the input terminal of three-way connector 2 is connected with the injection branch pipe 1 of bf coal injection system, in three-way connector 2 and first
The second check valve 4 and communicating pipe 5 are equipped between check valve 6；The input terminal of the output terminal of three-way connector 2 and the second check valve 4
It is connected, the output terminal of the second check valve 4 is connected with the input terminal of the first check valve 6 by communicating pipe 5, the first check valve 6
Output terminal is connected with coal powder lance for blast furnace 7, the caliber of the latus rectum of the second check valve 4 and the first check valve 6 with coal powder lance for blast furnace 7
Identical, three-way connector 2 is a variable-diameter structure, the three-way connector 1/3rd of close three-way connector input terminal one side
The internal diameter divided is identical with the internal diameter of the injection branch pipe 1 of bf coal injection system, the internal diameter of two parts of three-way connector its excess-three point
Identical with the internal diameter of coal powder lance for blast furnace, pressure release is connected with check valve 3 with the one side of 2 output terminal of three-way connector, and pressure release is single
It is identical with the internal diameter of coal powder lance for blast furnace 7 to the latus rectum of valve 3.
During the normal coal powder injection operation of bf coal injection system, the pressure release check valve 3 of this implementation new device is closed, opens this reality
The second check valve 4 and the first check valve 6 of new device are applied, coal dust is successively by the injection branch pipe 1 of bf coal injection system, threeway
Blast furnace is sprayed into after connector 2, the second check valve 4, communicating pipe 5, the first check valve 6 and coal powder lance for blast furnace 7.
After bf coal injection system blocks, the injection branch pipe 1 of bf coal injection system is controlled to stop coal powder injection, it is unidirectional to close first
6 and second check valve 4 of valve opens pressure release check valve 3, dismantles three-way connector 2, and block clearing is carried out to three-way connector 2.
It should be noted that above-described embodiment is only the preferred embodiment of the utility model, there is no limit the present invention's
Protection domain each falls within the scope of protection of the utility model in above-mentioned done equivalent substitution or change.
Claims (2)
1. a kind of coal powder lance for blast furnace anti-block apparatus, including three-way connector, pressure release check valve, the first check valve, threeway connection
The input terminal of device is connected with the injection branch pipe of bf coal injection system, the input of the output terminal of three-way connector and the first check valve
End is connected, and the output terminal of the first check valve is connected with coal powder lance for blast furnace, the latus rectum of the first check valve and coal powder lance for blast furnace
Caliber is identical, it is characterized in that, three-way connector is a variable-diameter structure, and the threeway close to three-way connector input terminal one side connects
The internal diameter of device three/part is identical with the internal diameter of the injection branch pipe of bf coal injection system, and the two of three-way connector its excess-three point
Partial internal diameter is identical with the internal diameter of coal powder lance for blast furnace, and pressure release is connected with check valve with the one side of three-way connector output terminal,
The latus rectum of pressure release check valve is identical with the internal diameter of coal powder lance for blast furnace.
2. a kind of coal powder lance for blast furnace anti-block apparatus, including three-way connector, pressure release check valve, the first check valve, threeway connection
The input terminal of device is connected with the injection branch pipe of bf coal injection system, and the output terminal of the first check valve is connected with coal powder lance for blast furnace
It connecing, the latus rectum of the first check valve is identical with the caliber of coal powder lance for blast furnace, it is characterized in that, three-way connector is a variable-diameter structure,
Close to the internal diameter of three-way connector three/part of three-way connector input terminal one side and the injection branch of bf coal injection system
The internal diameter of pipe is identical, and the internal diameter of two parts of three-way connector its excess-three point is identical with the internal diameter of coal powder lance for blast furnace, leads to three
It connects and the second check valve and communicating pipe is equipped between device and the first check valve；The output terminal of three-way connector is defeated with the second check valve
Enter end to be connected, the output terminal of the second check valve is connected with the input terminal of the first check valve by communicating pipe, the second check valve
Latus rectum is identical with the caliber of coal powder lance for blast furnace, and pressure release is connected with check valve with the one side of three-way connector output terminal, and pressure release is used
The latus rectum of check valve is identical with the internal diameter of coal powder lance for blast furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720640939.3U CN207376076U (en) | 2017-06-05 | 2017-06-05 | A kind of coal powder lance for blast furnace anti-block apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720640939.3U CN207376076U (en) | 2017-06-05 | 2017-06-05 | A kind of coal powder lance for blast furnace anti-block apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207376076U true CN207376076U (en) | 2018-05-18 |
Family
ID=62298763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720640939.3U Active CN207376076U (en) | 2017-06-05 | 2017-06-05 | A kind of coal powder lance for blast furnace anti-block apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207376076U (en) |
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2017
- 2017-06-05 CN CN201720640939.3U patent/CN207376076U/en active Active
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