CN205652842U - Malleation air conveying's jetting jar pressure relief device - Google Patents
Malleation air conveying's jetting jar pressure relief device Download PDFInfo
- Publication number
- CN205652842U CN205652842U CN201620370623.2U CN201620370623U CN205652842U CN 205652842 U CN205652842 U CN 205652842U CN 201620370623 U CN201620370623 U CN 201620370623U CN 205652842 U CN205652842 U CN 205652842U
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- pressure release
- pressure
- pipeline
- valve
- jetting
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Abstract
The utility model provides a malleation air conveying's jetting jar pressure relief device, belongs to blast furnace ironmaking jetting buggy technical field. Including pressure release pipeline, pressure release trip valve, expansion joint, pressurize that pipeline, equalizer valve, pressure release governing valve, pressure release pipeline pressure detect, a jetting jar pressure detection, on the pressure release pipeline of jetting tank deck portion, connected gradually pressure release trip valve, expansion joint, pressurized the pipeline, pressure release pipeline pressure detects and the pressure release governing valve, it sets up the equalizer valve on the pipeline to pressurize, in addition, jetting tank deck portion is equipped with jetting jar pressure detection, when carrying out the pressure release operation, open earlier the equalizer valve, utilize and pressurize the pipeline of pipeline after to the pressure release trip valve and pressurize, wait to reach appointed pressure after, close the equalizer valve, open pressure release trip valve, pressure release governing valve in proper order to control the pressure release air speed through the pressure release governing valve. The advantage lies in, steerable air speed reduces the wearing and tearing of pressure release trip valve and the work load of control pressure release receipts powder equipment.
Description
Technical field
This utility model belongs to blast furnace ironmaking coal injection technical field, and a kind of positive-pressure pneumatic particularly related to is defeated
The winding-up tank pressure relief device sent, it is adaptable to blast furnace ironmaking Coalblowing system, and it is also applied for the gas being similar to therewith
In power induction system, the life-span of winding-up tank pressure relief device can be effectively improved, and reduce the work of pressure release receipts powder equipment
Make load.
Background technology
Blast furnace ironmaking coal injection is a kind of regulation working of a furnace, reduces coke consumption, is beneficial to smooth operation of furnace and reduces raw
The effective means of ferrum cost.Bf coal injection system uses positive pneumatic transport technology, and this technique is typically by following as follows
Ring operates: winding-up tank loaded material under atmospheric pressure state；After having fed, as required winding-up tank is carried out
It is pressurized to specified pressure；Then open the transfer valve of winding-up tank, i.e. start to carry material；Operation to be conveyed terminates
Time, close transfer valve and stop conveying；Finally open relief valve and carry out pressure discharge operations, by air venting in tank to removing
Dirt diffuses equipment；After injection tank pressure reaches atmospheric pressure, charging next time conveying operations can be ready for.
In pulverized coal injection in blast furnace (and similar air conveying) system, need continuous and stable pulverized coal conveying,
Generally using the winding-up tank of 2 or more than 2 to be arranged in juxtaposition, replace defeated powder, therefore in winding-up tank, coal dust can not
Spray sky, needs to stay part bed material, and in tank, gas pressure is higher, so during pressure discharge operations, especially
Starting stage, the gas flow rate released is very fast, and oozes miscellaneous a large amount of coal dusts, can cause pressure relief valve and pipeline
Abrasion, reduces valve and pipeline life；And during pressure release, instantaneous delivery is relatively big, can strengthen follow-up dedusting and diffuse
The process load of equipment, and the quality and sealing to associated devices have higher requirement.
At present, the practice that pressure relief device is universal is to arrange what one or several was arranged in juxtaposition at winding-up tank pressure relief opening
Stop valve, and restriction orifice is set on pipeline, after opening relief valve, only reduce containing powder gas by restriction orifice
The flow velocity of stream, thus reduce valve wear and cleaner load.But in terms of practical situations, this mode
The pressure relief device life-span can not be effectively improved and reduce abrasion.
Summary of the invention
The purpose of this utility model is to provide the winding-up tank pressure relief device of a kind of positive pneumatic transport, solves gas
The problem that winding-up tank pressure leak process with pressure in power conveying brings, can effectively control air velocity, to improve pressure release
Device service life, reduce dedusting and diffuse the workload of equipment.
This utility model includes relief pipeline 1, pressure release stop valve 2, expansion joint 3, pressurised pipeline 4, equalizer valve
5, decompression control valve 6, relief pipeline pressure detecting 7, injection tank pressure detection 8；Winding-up tank top is arranged
On relief pipeline 1, it is connected with pressure release stop valve 2, expansion joint 3, pressurised pipeline 4, relief pipeline pressure in turn
Power detection 7 and decompression control valve 6；Equalizer valve 5 is set on pressurised pipeline 4；It addition, winding-up tank top is provided with
Injection tank pressure detection 8；When performing pressure discharge operations, first open equalizer valve 5, utilize pressurised pipeline 4 to pressure release
Pipeline after stop valve 2 carries out pressurising, and pressurized gas can use nitrogen or compressed air etc., to be achieved appointment to press
Power or after the time, closes equalizer valve 5, opens pressure release stop valve 2, decompression control valve 6 successively, and by letting out
Pressure regulation valve 6 controls pressure release air velocity.
Pressurised pipeline 4 it is provided with, performing before pressure discharge operations after to pressure release stop valve 2 after pressure release stop valve 2
Relief pipeline has carried out pressurising.
This pressure relief device uses two-stage series connection to control, i.e. one-level is used for cutting-off controlling, and another level is used for regulating control；
Every grade can use 1 valve, it would however also be possible to employ 2 and above valve are arranged in juxtaposition and coordinate unlatching, to reach
Purpose to more precise control pressure release speed.
This utility model, compared with present technology, can be greatly improved the pressure relief valve service life of winding-up batch can with pressure,
Effectively control follow-up dedusting and diffuse the instantaneous process air quantity of equipment, simple in construction, easily operate, ensure system
The aspects such as stable operation, minimizing system maintenance amount have extremely amasss effect.
Accompanying drawing explanation
Fig. 1 is a kind of winding-up tank pressure relief device of the present utility model and process schematic representation.Wherein, relief pipeline 1,
Pressure release stop valve 2, expansion joint 3, pressurised pipeline 4, equalizer valve 5, decompression control valve 6, relief pipeline pressure
Detection 7, injection tank pressure detection 8.
Detailed description of the invention
As it is shown in figure 1, this utility model includes relief pipeline 1, pressure release stop valve 2, expansion joint 3, pressurising
Pipeline 4, equalizer valve 5, decompression control valve 6, relief pipeline pressure detecting 7, injection tank pressure detection 8；Spray
Blow on the relief pipeline 1 that tank top is arranged, be connected with pressure release stop valve 2, expansion joint 3, pressurised pipeline in turn
4, relief pipeline pressure detecting 7 and decompression control valve 6；Equalizer valve 5 is set on pressurised pipeline 4；It addition, spray
Blow tank top and be provided with injection tank pressure detection 8.
When performing pressure discharge operations, first open equalizer valve 5, utilize pressurised pipeline 4 to pressure release stop valve 2 rear portion
Relief pipeline 1 carry out pressurising；Treat that the pressure measured by relief pipeline pressure detecting 7 detects with injection tank pressure
8 identical or close to time or reach the appointment time, close equalizer valve 5, open pressure release stop valve 2；Then turn on
Decompression control valve 6, controls the aperture of decompression control valve 6 according to the pressure of winding-up tank, so that pressure release gas stream
Speed and flow are controlling in the range of suitably.For reducing abrasion to greatest extent, air velocity preferably controls
Within 20m/s, gas flow diffuses the maximum processing capability of equipment less than dedusting.Pressure inside the tank to be jetted reaches
To setting pressure (close to atmospheric pressure), decompression control valve 6 fully opens, and i.e. completes this pressure leak process.
Claims (2)
1. a winding-up tank pressure relief device for positive pneumatic transport, including relief pipeline, pressure release stop valve, swollen
Swollen joint, pressurised pipeline, equalizer valve, decompression control valve, relief pipeline pressure detecting, injection tank pressure detect；
It is characterized in that, on the relief pipeline (1) of winding-up tank top, be connected with pressure release stop valve (2), swollen in turn
Swollen joint (3), pressurised pipeline (4), relief pipeline pressure detecting (7) and decompression control valve (6)；Pressurising pipe
Equalizer valve (5) is set on road (4)；It addition, winding-up tank top is provided with injection tank pressure detection (8).
The winding-up tank pressure relief device of positive pneumatic transport the most according to claim 1, it is characterised in that:
Pressurised pipeline (4) it is provided with after pressure release stop valve (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620370623.2U CN205652842U (en) | 2016-04-27 | 2016-04-27 | Malleation air conveying's jetting jar pressure relief device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620370623.2U CN205652842U (en) | 2016-04-27 | 2016-04-27 | Malleation air conveying's jetting jar pressure relief device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205652842U true CN205652842U (en) | 2016-10-19 |
Family
ID=57401694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620370623.2U Expired - Fee Related CN205652842U (en) | 2016-04-27 | 2016-04-27 | Malleation air conveying's jetting jar pressure relief device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205652842U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109928215A (en) * | 2019-04-16 | 2019-06-25 | 中冶赛迪技术研究中心有限公司 | A kind of balk cargo pneumatic conveying experimental provision and method |
-
2016
- 2016-04-27 CN CN201620370623.2U patent/CN205652842U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109928215A (en) * | 2019-04-16 | 2019-06-25 | 中冶赛迪技术研究中心有限公司 | A kind of balk cargo pneumatic conveying experimental provision and method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161019 Termination date: 20190427 |