CN205893304U - Blast furnace coal injection system jetting jar pressure relief device - Google Patents
Blast furnace coal injection system jetting jar pressure relief device Download PDFInfo
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- CN205893304U CN205893304U CN201620577977.4U CN201620577977U CN205893304U CN 205893304 U CN205893304 U CN 205893304U CN 201620577977 U CN201620577977 U CN 201620577977U CN 205893304 U CN205893304 U CN 205893304U
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Abstract
The utility model discloses a blast furnace coal injection system jetting jar pressure relief device, main problem to current blast furnace coal injection system leakproofness difference has provided a blast furnace coal injection system jetting jar pressure relief device who has good leakproofness, receive powder ware and exhaust units including pressure release pipeline, pocket type, the entry of pressure release pipeline and export respectively with jetting jar with powder ware lower part ash bucket intercommunication is received to the pocket type, be provided with the pressure release valves on the pressure release pipeline, the pocket type receive powder ware air outlet with the exhaust units intercommunication. The utility model discloses a need not set up bin top dust remover on the buggy storehouse, consequently, buggy storehouse top is sealed the setting completely, has avoided the entering of air, keeps extremely low oxygen content in messenger's buggy storehouse.
Description
Technical field
This utility model is related to a kind of bf coal injection system injection tank pressure relief device.
Background technology
In modern blast furnace ironmaking technology, pulverized coal injection in blast furnace is one of its energy-saving important means, is also modern high
One of requisite technology of stove.In conventional design, the relief pipeline that pulverized coal injection is blown tank is all directly accessed Pulverized Coal Bin
Interior, a roof scrubber is set in this Pulverized Coal Bin, for being blown pressure release, the purging of tank simultaneously.But in actual production, one
Aspect is usually because the tightness deficiency of this roof scrubber equipment leads to the oxygen content in Pulverized Coal Bin higher, especially for life
When producing mixed coal, bring potential safety hazard to normal production, on the other hand because the fault rate of this equipment is higher, repair and maintenance is difficult
Degree is big, has had a strong impact on normal production.
Additionally, for the setting of relief valve valve on injection tank relief pipeline, Chinese patent cn201545860u discloses
A kind of relief valve and the pressure release mode of restriction orifice (group), and decompression control valve is provided with its bypass, relief tube the most at last
Road accesses in Pulverized Coal Bin, and the venting duration of this pressure release mode is longer, leads to be blown tank tank switching cycle stretch-out, to large-blowing coal
Operation is unfavorable.Another way is only to arrange a relief valve, the speed in high pressure relief, and coal dust in Pulverized Coal Bin is rushed
Hit larger, roof scrubber is operated at full capacity, often occur that coal dust is discharged, dust removing effects are not good, also safety is given birth to simultaneously
It is unfavorable to produce.
Utility model content
For the problems referred to above, this utility model provides a kind of bf coal injection system injection tank pressure release dress of favorable sealing property
Put.
For reaching above-mentioned purpose, this utility model bf coal injection system is blown tank pressure relief device, including pressure relief pipe, pocket type
Powder collector and exhaust fan unit, the entrance and exit of described pressure relief pipe is connected with injection tank and described bladder type powder recepting device respectively, institute
State and pressure release valve group is provided with pressure relief pipe；Described bladder type powder recepting device is connected with described exhaust fan unit.
Further, described pressure release valve group includes high-pressure decompression valve and low-voltage decompression valve, described high-pressure decompression valve and described
Low-voltage decompression valve is in parallel.
Further, described exhaust fan unit includes the main exhaust fan being connected in parallel in pipeline and pressure release blower fan, described main air draft
The entrance of machine is provided with valve, and the outlet of described pressure release blower fan and entrance are provided with valve.
Further, described exhaust fan unit includes main exhaust fan and pressure release blower fan, described main exhaust fan and described pressure release wind
The outlet of machine and atmosphere, the entrance of described main exhaust fan and described pressure release blower fan is provided with valve.
Further, described pressure relief pipe includes filter mechanism, the first gold medal being successively set on pipeline along airflow direction
Belong to flexible pipe, pressure release valve group and the second metal hose.
Further, it is provided with pressure measuring device in described injection tank, described pressure measuring device and controller communication
Connect, described controller controls described pressure release valve group according to the pressure signal that pressure measuring device transmits.
Specifically, described main exhaust fan is provided with monitoring main exhaust fan working condition monitor, described detector with
Controller communication connects, the working state control main exhaust fan entrance of the main exhaust fan that described controller monitors according to monitor
Valve, pressure release blower fan and pressure release blower fan entry and exit valve.
This utility model bf coal injection system is blown in the Pulverized Coal Bin of tank pressure relief device not to be needed to arrange roof scrubber, this
Sample, whole Pulverized Coal Bin is exactly the equipment of an integral sealing, therefore, is not in the situation that outside air enters Pulverized Coal Bin, because
This, the oxygen content in Pulverized Coal Bin of the present utility model can be maintained at an extremely low ratio, is not in danger.
The injection tank that this utility model bf coal injection system is blown tank pressure relief device is connected with bladder type powder recepting device by pipeline,
Bladder type powder recepting device is connected with exhaust fan unit, exhaust fan unit outwardly air draft, and air will not be back to pocket type by exhaust fan unit and receive
Powder device is it is ensured that whole coal injection system has a relatively low oxygen content.
This utility model bf coal injection system injection tank pressure relief device takes full advantage of existing equipment, the investment of reconstruction
Few, and, this utility model bf coal injection system injection tank pressure relief device compact conformation, occupy little space.
Brief description
Fig. 1 is this utility model bf coal injection system injection tank pressure relief device.
Specific embodiment
With reference to Figure of description, this utility model is further described.
Embodiment 1
As shown in figure 1, the bf coal injection system injection tank pressure relief device of the present embodiment, including pressure relief pipe 6, bladder type powder recepting
Device 3 and exhaust fan unit, the entrance and exit of described pressure relief pipe 6 is connected with injection tank 11,12 and described bladder type powder recepting device 3 respectively
Logical, described pressure relief pipe 6 is provided with pressure release valve group, described pressure release valve group includes a relief valve；Described bladder type powder recepting device 3 with
Described exhaust fan unit connection, described exhaust fan unit includes the main exhaust fan 4 being connected in parallel in pipeline and pressure release blower fan 5, described main row
The entrance of blower fan 4 is provided with valve, and the outlet of described pressure release blower fan 5 and entrance are provided with valve 106,107.
It is provided with pressure measuring device, described pressure measuring device is connected with controller communication in described injection tank 11,12,
Described controller controls described pressure release valve group according to the pressure signal that pressure measuring device transmits.
Monitor, described detector and the controller of monitoring main exhaust fan 4 working condition are provided with described main exhaust fan 4
Communication connects, the valve of working state control main exhaust fan 4 entrance of the main exhaust fan 4 that described controller monitors according to monitor
The valve 106,107 of door, pressure release blower fan 5 and pressure release blower fan 5 entry and exit.
The working condition that the bf coal injection system of the present embodiment is blown tank pressure relief device includes the following two kinds:
When pulverized coal preparation system is in normal production, keep main exhaust fan 4 normal work, pressure release blower fan 5 cuts out, pressure release wind
After valve 106,107 before and after machine 5 is closed, open relief valve, until pressure release finishes in injection tank 11,12, subsequently enter injection
Canned powder program, arrangement of powder closes relief valve after finishing.
When pulverized coal preparation system is not in production status, close the valve of main exhaust fan 4 entrance, before opening pressure release blower fan 5
Valve 106,107 afterwards, opens pressure release blower fan 5, is then turned on relief valve, until injection tank 11,12 enters filling puffing powder journey
Sequence, arrangement of powder closes relief valve after finishing, and then closes pressure release blower fan 5, valve 106 and valve 107 successively.
Above two working condition can be seen that no matter be in which kind of working condition, is carrying out pressure release to injection tank 11,12
When, all bladder type powder recepting device 3 can be made to be in the state of tiny structure by the work of pressure release blower fan 5 or main exhaust fan 4, but, due to
Main exhaust fan 4 or the effect of pressure release blower fan 5, do not result in the situation that air flows back along pipeline, therefore, in bladder type powder recepting device 3
Space will not circulate with outside air.
Bf coal injection system injection tank pressure relief device Pulverized Coal Bin 2 top of the present utility model does not need to arrange silo roof dedusting
Device, Pulverized Coal Bin 2 top is set to completely airtight top, the sealing property of Pulverized Coal Bin 2 so, is greatly improved,
Oxygen content in effective control Pulverized Coal Bin 2, is injecting mixed coal and safety in production provides a favorable guarantee.
In the present embodiment, bag filter ash bucket is accessed in relief pipeline end, it is to avoid because injection tank 11,12 pressure releases are to coal
The impact of coal dust in powder cabin 2 and cause industrial accident.
In the present embodiment, the valve of pressure release blower fan 5 and main exhaust fan 4 porch is used for controlling pressure release blower fan 5 and main air draft
Whether the connection of machine 4 to be, and the blower fan in pressure release blower fan 5 exit, then it is due to avoiding the big air-flow of main exhaust fan semi-finals to pressure release wind
Machine 5 bearing produces impact, it also avoid the expellant gas when main exhaust fan 4 works simultaneously and carries dust entrance pressure release blower fan 5
Interior, lead to accumulate dust in pressure release blower fan 5.
Certainly, when pulverized coal preparation system is under non-production status, if pressure release blower fan 5 breaks down let out it is also possible to close
Valve 106,107 before and after pressure fan 5, opens main exhaust fan 4 and carries out air draft.
Embodiment 2
As shown in figure 1, the bf coal injection system injection tank pressure relief device of the present embodiment, including pressure relief pipe 6, bladder type powder recepting
Device 3 and exhaust fan unit, the entrance and exit of described pressure relief pipe 6 is connected with injection tank 11,12 and described bladder type powder recepting device 3 respectively
Logical, described pressure relief pipe 6 is provided with pressure release valve group, described pressure release valve group includes high-pressure decompression valve 103 and low-voltage decompression valve
104, described high-pressure decompression valve 103 and described low-voltage decompression valve 104 in parallel；Described bladder type powder recepting device 3 is with described exhaust fan unit even
Logical, described exhaust fan unit includes main exhaust fan 4 and pressure release blower fan 5, the outlet of described main exhaust fan 4 and described pressure release blower fan 5 with
Atmosphere, the entrance of described main exhaust fan 4 and described pressure release blower fan 5 is provided with valve 106,107.
It is provided with pressure measuring device, described pressure measuring device is connected with controller communication in described injection tank 11,12,
Described controller controls described pressure release valve group according to the pressure signal that pressure measuring device transmits.
Monitor, described detector and the controller of monitoring main exhaust fan 4 working condition are provided with described main exhaust fan 4
Communication connects, the valve of working state control main exhaust fan 4 entrance of the main exhaust fan 4 that described controller monitors according to monitor
The valve 106,107 of door, pressure release blower fan 5 and pressure release blower fan 5 entry and exit.
The bf coal injection system injection tank pressure relief device of the present embodiment has two kinds of working conditions:
When pulverized coal preparation system normally produces, keep main exhaust fan 4 normal work, close pressure release blower fan 5 and pressure release blower fan 5
Valve 106,107 in front and back, opens high-pressure decompression valve 103, and when in injection tank 11,12, pressure release is to setting pressure, unlatching low pressure is let out
Pressure valve 104, until pressure release finishes in injection tank 11,12, subsequently enters filling puffing powder program, arrangement of powder simultaneously closes off after finishing
High-pressure decompression valve 103 and low-voltage decompression valve 104.
When pulverized coal preparation system is not in production status, close main exhaust fan 4, open pressure release blower fan 5 before and after valve 106,
107, open pressure release blower fan 5, be then turned on high-pressure decompression valve 103, when be blown tank 11,12 in pressure release arrive setting pressure when open low
Pressure relief valve 104, until injection tank 11,12 enters filling puffing powder program, arrangement of powder simultaneously closes off high-pressure decompression valve after finishing
103 and low-voltage decompression valve 104, then close pressure release blower fan 5, valve 106 and valve 107 successively.
The present embodiment is arranged in parallel high-pressure decompression valve 103 and low-voltage decompression valve 104, is conducive to being blown tank 11,12
Quick pressure releasing, shortens the tank switching cycle, and the large-blowing coal for blast furnace provides the time to ensure；
Pressure release blower fan 5 and main exhaust fan 4 are divided into two-way by the present embodiment, directly empty, so, pressure release blower fan 5 and main row
The work of blower fan 4 is independent of each other, and also allows for keeping in repair.
Certainly, in the present embodiment, the plan of establishment of exhaust fan unit can also be applied in embodiment 1, and in embodiment 1
The plan of establishment of exhaust fan unit can also be applied in the present embodiment.
Embodiment 3
On the basis of above-described embodiment, pressure relief pipe 6 described in the present embodiment includes being successively set on along airflow direction
Filter mechanism 101 on pipeline, the first metal hose 102, pressure release valve group and the second metal hose 105.
Because injection tank 11,12 needs to weigh, in the present embodiment, the one of tank 11,12 will be blown close in pressure relief pipe 6
End setting the first metal hose 102, using connection by metal hose, the impact that injection tank 11,12 is weighed very little it is ensured that
The title of injection tank 11,12 is not affected by relief pipeline and equipment, is conducive to being precisely controlled of injection process；
Because bladder type powder recepting device 3 operationally can produce vibration, in long vibration processes, connected pipeline is easy
There is fatigue rupture, therefore, for the service life of extension device, pressure relief pipe 6 is arranged near one end of bladder type powder recepting device 3
Second metal hose 105；
Further, since being the mixture of gas and powder body in injection tank 11,12, in pressure release, if do not processed, lead to
Cross pressure relief pipe 6 also can be the mixture of gas and powder body, when this mixture passes through pipeline, pipeline is produced and washes away, make
Become the abrasion of pipeline, therefore, embodiment itself is provided with the setting of filter mechanism 101, decrease in high-low pressure pressure leak process because
Dust content is too high to be washed away to pipeline, extends the service life of pipeline.
More than, preferred embodiment only of the present utility model, but protection domain of the present utility model is not limited thereto, and appoints
What those familiar with the art in the technical scope that this utility model discloses, the change that can readily occur in or replace
Change, all should cover within protection domain of the present utility model.Therefore, protection domain of the present utility model should be with claim
The protection domain being defined is defined.
Claims (7)
1. a kind of bf coal injection system is blown tank pressure relief device, including pressure relief pipe, bladder type powder recepting device and exhaust fan unit, its feature
It is: the entrance and exit of described pressure relief pipe is connected with injection tank and described bladder type powder recepting device respectively, on described pressure relief pipe
It is provided with pressure release valve group；Described bladder type powder recepting device is connected with described exhaust fan unit.
2. bf coal injection system as claimed in claim 1 injection tank pressure relief device it is characterised in that: described pressure release valve group includes height
Pressure relief valve and low-voltage decompression valve, described high-pressure decompression valve and described low-voltage decompression valve are in parallel.
3. bf coal injection system as claimed in claim 1 injection tank pressure relief device it is characterised in that: described exhaust fan unit is included simultaneously
It is associated in the main exhaust fan in pipeline and pressure release blower fan, the entrance of described main exhaust fan is provided with valve, the going out of described pressure release blower fan
Mouth and entrance are provided with valve.
4. bf coal injection system as claimed in claim 1 injection tank pressure relief device it is characterised in that: described exhaust fan unit includes leading
Exhaust blower and pressure release blower fan, the outlet of described main exhaust fan and described pressure release blower fan and atmosphere, described main exhaust fan and institute
The entrance stating pressure release blower fan is provided with valve.
5. bf coal injection system as claimed in claim 1 injection tank pressure relief device it is characterised in that: described pressure relief pipe includes edge
Airflow direction is successively set on filter mechanism on pipeline, the first metal hose, pressure release valve group and the second metal hose.
6. bf coal injection system as claimed in claim 1 injection tank pressure relief device it is characterised in that: be provided with described injection tank
Pressure measuring device, described pressure measuring device is connected with controller communication, and described controller transmits according to pressure measuring device
Pressure signal control described pressure release valve group.
7. as described in claim 3 or 4 bf coal injection system injection tank pressure relief device it is characterised in that: on described main exhaust fan
Be provided with the monitor of monitoring main exhaust fan working condition, described monitor is connected with controller communication, described controller according to
The valve of working state control main exhaust fan entrance of the main exhaust fan that monitor monitors, pressure release blower fan and pressure release blower fan
The valve of entry and exit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620577977.4U CN205893304U (en) | 2016-06-15 | 2016-06-15 | Blast furnace coal injection system jetting jar pressure relief device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620577977.4U CN205893304U (en) | 2016-06-15 | 2016-06-15 | Blast furnace coal injection system jetting jar pressure relief device |
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| Publication Number | Publication Date |
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| CN205893304U true CN205893304U (en) | 2017-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620577977.4U Active CN205893304U (en) | 2016-06-15 | 2016-06-15 | Blast furnace coal injection system jetting jar pressure relief device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105861770A (en) * | 2016-06-15 | 2016-08-17 | 中冶华天南京工程技术有限公司 | Injection tank pressure relief device for blast furnace coal injection system |
| CN112856004A (en) * | 2020-12-30 | 2021-05-28 | 江苏安泰安全技术有限公司 | Proportional control safety valve pressure relief method and device |
-
2016
- 2016-06-15 CN CN201620577977.4U patent/CN205893304U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105861770A (en) * | 2016-06-15 | 2016-08-17 | 中冶华天南京工程技术有限公司 | Injection tank pressure relief device for blast furnace coal injection system |
| CN112856004A (en) * | 2020-12-30 | 2021-05-28 | 江苏安泰安全技术有限公司 | Proportional control safety valve pressure relief method and device |
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