CN105129435A - Method for conveying ash step by step through intelligent adjustment - Google Patents
Method for conveying ash step by step through intelligent adjustment Download PDFInfo
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- CN105129435A CN105129435A CN201510475430.3A CN201510475430A CN105129435A CN 105129435 A CN105129435 A CN 105129435A CN 201510475430 A CN201510475430 A CN 201510475430A CN 105129435 A CN105129435 A CN 105129435A
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- ash
- valve
- air inlet
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- pipeline
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Abstract
The invention discloses a method for conveying ash step by step through intelligent adjustment. According to the method for conveying ash step by step through intelligent adjustment, it is intelligently judged that during the initial pipe blocking period, when an inner casing pipe is not blocked completely, a unit air inlet valve is closed in time, compressed air from an ash mixing valve is utilized for pushing the accumulated ash in a pipeline, and the accumulated ash in a pipeline behind the ash mixing valve is conveyed in advance; and after the pressure of mixed ash drops to a certain value, the unit air inlet valve is opened again, and ash left in a cabin pump and ash left in double casing pipes are conveyed. Thus, by means of the method for conveying ash step by step through intelligent adjustment, the problem of blockage of the ash conveying pipeline is solved, the purpose of limiting on the output of a unit is achieved, and the overhauling and maintaining work pressure of the ash conveying system is lowered.
Description
Technical field
The present invention relates to pneumatic valve control technology field, particularly, relate to the method for the defeated ash of a kind of Intelligent adjustment substep.
Background technology
My company's two units all adopt malleation concentrated phase pneumatic ash transmitting system at present, and ash conveying pipe adopts double-jacket tube, using pressurized air as defeated grey power; with storehouse pump for nucleus equipment; realize powder ash to flow in pipeline with class fluid form, thus reach low delivery speed, high gray scale, high traffic capacity.But because load raises, fires the reasons such as ash content increase and cause defeated ash concentration large, compressed air pressure has been brought up to maximum, but still can not carry and cause ash conveying pipe block, limits exerting oneself of unit simultaneously.
This ash-transmission system operation scheme is: each defeated grey unit runs by the parameter automatic programme control preset under normal circumstances, and its idiographic flow is: bring into operation, and--vent valve is opened, and--ash discharging valve is opened, and--starting into ash,--the dress ash time is to (or the full signal of electric field sending cans ash sends), and------all ash discharging valves of unit, vent valve off-position signal are to--after judging that delivery pressure is up to standard,--ash output valve is opened, and----mixed grey device master air suction valve is opened (starting defeated ash), and--ash conveying pipe Pressure Drop is to setting value, and--mixed grey device master air suction valve closes, and--ash output valve closes (delivery cycle terminates) to unit intake valve close--ash output valve is closed in time delay--to unit inlet open in vent valve pass in ash discharging valve pass.
Find through long-term observation, during ash conveying pipe generation plugging, often because defeated ash concentration is too high, first pile up in ash conveying pipe after causing mixed grey device, now inner sleeve pipeline does not block completely, and the powder ash after unit inlet open in the pump of storehouse can be deposited in ash conveying pipe endlessly under compressed-air actuated promotion, causes inner sleeve pipeline also Severe blockage, final whole ash conveying pipe blocks completely, has to take pipe-dredging apart.
Summary of the invention
The object of this invention is to provide the method for the defeated ash of a kind of Intelligent adjustment substep, the method for the defeated ash of this Intelligent adjustment substep not only solves ash conveying pipe blocking, the problem of exerting oneself of restriction unit, and decreases the operation pressure of ash-transmission system repair and maintenance.
To achieve these goals, the invention provides the method for the defeated ash of a kind of Intelligent adjustment substep, ash conveying device based on ash bucket, vent valve, ash discharging valve, storehouse pump, unit air inlet valve, mixed grey valve, ash output valve, pipeline a, pipeline b and double-jacket tube composition realizes, and specifically comprises the following steps:
A) open vent valve and ash discharging valve successively, start to fill ash until ash in the pump of storehouse reaches the height of setting, close ash discharging valve and vent valve successively;
B) the compressed-air actuated delivery pressure of systems axiol-ogy unit air inlet valve preceding pipeline a is when 0.55MP-0.7MP,
Open ash output valve, unit air inlet valve, mixed grey valve successively, ash is delivered to the grey storehouse after ash output valve by double-jacket tube;
C) when the pressure-measuring-point two of unit air inlet valve position detects that pressure is increased to 0.25Mpa-0.3Mpa, closing unit air inlet valve, stop to double-jacket tube conveying pressurized air, now, ash output valve and mixed grey valve continue to be held open state, until when the Pressure Drop of mixed grey valve place pressure-measuring-point one is to 0.15Mpa-0.2Mpa on pipeline b, then open unit air inlet valve, continue to carry pressurized air in double-jacket tube;
D) when the pressure at pressure-measuring-point two place is brought down below 0.06MP, close mixed grey valve, unit air inlet valve successively, time delay 5s-10s, close ash output valve.
Preferably, when the ash in the pump of described storehouse exceedes 3/4ths of storehouse pump whole height, ash discharging valve, vent valve is closed successively.
Pass through technique scheme, the invention has the beneficial effects as follows: by using the method for the defeated ash of this Intelligent adjustment substep, the ash conveying pipe solved owing to occurring when high load capacity, coal-fired ash content are large and the mixed ash of compressed air system band water etc. in winter is bad blocks up, impact restriction unit output, increases the problem of ash-transmission system maintenance workload.
Other features and advantages of the present invention are described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification sheets, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.In the accompanying drawings:
Fig. 1 is the structural representation of the method for the defeated ash of Intelligent adjustment substep that the preferred embodiment for the present invention provides;
Fig. 2 is the section-drawing of the method double-jacket tube of the defeated ash of Intelligent adjustment substep that the preferred embodiment for the present invention provides.
Detailed description of the invention
Be described in detail to the specific embodiment of the present invention below in conjunction with accompanying drawing, should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
In the present invention, when not doing contrary explanation, the noun of locality of use such as " upper and lower " is the direction for accompanying drawing.
As Fig. 1, the invention provides the method for the defeated ash of a kind of Intelligent adjustment substep, ash conveying device based on ash bucket, vent valve, ash discharging valve, storehouse pump, unit air inlet valve, mixed grey valve, ash output valve, pipeline a, pipeline b and double-jacket tube composition realizes, and specifically comprises the following steps:
A) open vent valve and ash discharging valve successively, start to fill ash until ash in the pump of storehouse reaches the height of setting, close ash discharging valve and vent valve successively;
B) the compressed-air actuated delivery pressure of systems axiol-ogy unit air inlet valve preceding pipeline a is when 0.55MP-0.7MP, and open ash output valve, unit air inlet valve, mixed grey valve successively, ash is delivered to the grey storehouse after ash output valve by double-jacket tube;
C) when the pressure-measuring-point two of unit air inlet valve position detects that pressure is increased to 0.25Mpa-0.3Mpa, closing unit air inlet valve, stop to double-jacket tube conveying pressurized air, now, ash output valve and mixed grey valve continue to be held open state, until when the Pressure Drop of mixed grey valve place pressure-measuring-point one is to 0.15Mpa-0.2Mpa on pipeline b, then open unit air inlet valve, continue to carry pressurized air in double-jacket tube;
D) when the pressure at pressure-measuring-point two place is brought down below 0.06MP, close mixed grey valve, unit air inlet valve successively, time delay 5s-10s, close ash output valve.
As shown in Figure 2, the present invention adopts double-jacket tube, comprise inner sleeve, ash pipeline and orifice plate, for horizontal feed pipeline, due to gravity effect, gas-solid mixture is formed in pipeline, conduit upper gas is how solid few, the solid many gas in pipeline bottom is few, when there is plugging phenomenon, first powder ash starts to pile up at pipeline lower wall, upwards be stacked into pipeline upper wall gradually, pipeline blocks the most at last, therefore, the present invention is according to the pressure parameter of setting, namely when pressure-measuring-point two place pressure is increased to 0.25Mpa-0.3Mpa, now judge at the generation plugging initial stage, when inner sleeve does not also block completely, timely closing unit air inlet valve, the pressurized air utilizing mixed grey valve to come promotes the dust stratification in pipeline, one step ahead dust stratification in pipeline after mixed grey valve is transported away, after mixed grey pressure drops to setting value, when namely pressure-measuring-point one place Pressure Drop is to 0.15Mpa-0.2Mpa, again open unit air inlet valve, carry remaining powder ash in storehouse pump and double-jacket tube.
Particularly, as one preferred embodiment, when the compressed-air actuated delivery pressure of unit air inlet valve preceding pipeline a is at 0.55MP ~ 0.7MP, peripheral control program receives pressure signal, control related valve and start defeated ash, when pressure-measuring-point two place pressure is increased to 0.25Mpa-0.3Mpa, the automatic closing unit air inlet valve of control program, when pressure-measuring-point one place Pressure Drop is to 0.15Mpa-0.2Mpa, control program opens unit air inlet valve automatically, carry remaining ash in storehouse pump and pipeline, when pressure-measuring-point two place pressure is brought down below 0.06Mpa, illustrate that in pipeline, dust stratification has been carried, now, control program closes mixed grey valve automatically, unit air inlet valve, time delay 5s-10s, close ash output valve, a delivery cycle terminates.
To sum up, the method for the defeated ash of Intelligent adjustment substep provided by the invention, not only solves ash conveying pipe blocking, the problem of exerting oneself of restriction unit, and decreases the operation pressure of ash-transmission system repair and maintenance.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
Claims (2)
1. a method for the defeated ash of Intelligent adjustment substep, the ash conveying device based on ash bucket, vent valve, ash discharging valve, storehouse pump, unit air inlet valve, mixed grey valve, ash output valve, pipeline a, pipeline b and double-jacket tube composition realizes, and specifically comprises the following steps:
A) open vent valve and ash discharging valve successively, start to fill ash until ash in the pump of storehouse reaches the height of setting, close ash discharging valve and vent valve successively;
B) the compressed-air actuated delivery pressure of systems axiol-ogy unit air inlet valve preceding pipeline a is when 0.55MP-0.7MP, and open ash output valve, unit air inlet valve, mixed grey valve successively, ash is delivered to the grey storehouse after ash output valve by double-jacket tube;
C) when the pressure-measuring-point two of unit air inlet valve position detects that pressure is increased to 0.25Mpa-0.3Mpa, closing unit air inlet valve, stop to double-jacket tube conveying pressurized air, now, ash output valve and mixed grey valve continue to be held open state, until when the Pressure Drop of mixed grey valve place pressure-measuring-point one is to 0.15Mpa-0.2Mpa on pipeline b, then open unit air inlet valve, continue to carry pressurized air in double-jacket tube;
D) when the pressure at pressure-measuring-point two place is brought down below 0.06MP, close mixed grey valve, unit air inlet valve successively, time delay 5s-10s, close ash output valve.
2. the method for the defeated ash of a kind of Intelligent adjustment substep according to claim 1, is characterized in that, when the ash in the pump of described storehouse exceedes 3/4ths of storehouse pump whole height, close ash discharging valve, vent valve successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510475430.3A CN105129435A (en) | 2015-08-06 | 2015-08-06 | Method for conveying ash step by step through intelligent adjustment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510475430.3A CN105129435A (en) | 2015-08-06 | 2015-08-06 | Method for conveying ash step by step through intelligent adjustment |
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| CN105129435A true CN105129435A (en) | 2015-12-09 |
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| CN201510475430.3A Pending CN105129435A (en) | 2015-08-06 | 2015-08-06 | Method for conveying ash step by step through intelligent adjustment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114751198A (en) * | 2022-04-22 | 2022-07-15 | 山东钢铁集团永锋临港有限公司 | Automatic cleaning and blowing method for pneumatic conveying of blocked pipe |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1923643A (en) * | 2006-09-04 | 2007-03-07 | 李玉清 | Method of alternately operating long-distance dredging and transportation for concentrated phase powdery material |
| CN201228166Y (en) * | 2008-04-28 | 2009-04-29 | 江苏瑞帆环境工程设备有限公司 | Positive-pressure pneumatic conveying apparatus with adjustable pressure |
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2015
- 2015-08-06 CN CN201510475430.3A patent/CN105129435A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1923643A (en) * | 2006-09-04 | 2007-03-07 | 李玉清 | Method of alternately operating long-distance dredging and transportation for concentrated phase powdery material |
| CN201228166Y (en) * | 2008-04-28 | 2009-04-29 | 江苏瑞帆环境工程设备有限公司 | Positive-pressure pneumatic conveying apparatus with adjustable pressure |
Non-Patent Citations (2)
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| 崔校伟: "浅述正压浓相气力输灰系统的设计与应用", 《科技风》 * |
| 段培栋: "1500 m 超长距离气力输灰系统及应用分析", 《电力学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114751198A (en) * | 2022-04-22 | 2022-07-15 | 山东钢铁集团永锋临港有限公司 | Automatic cleaning and blowing method for pneumatic conveying of blocked pipe |
| CN114751198B (en) * | 2022-04-22 | 2023-05-19 | 山东钢铁集团永锋临港有限公司 | Automatic blowing method for pneumatic conveying blocked pipe |
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| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| CB03 | Change of inventor or designer information |
Inventor after: An Yongxin Inventor after: Zhang Xiaoqiang Inventor after: Zheng Kai Inventor before: An Yongxin Inventor before: Zhang Xiaoqiang |
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| COR | Change of bibliographic data | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151209 |
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| RJ01 | Rejection of invention patent application after publication |