CN100457589C - Method of realizing automatic block clearing and continuous operation of up flow type ash cabin pump - Google Patents
Method of realizing automatic block clearing and continuous operation of up flow type ash cabin pump Download PDFInfo
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- CN100457589C CN100457589C CNB2006100125587A CN200610012558A CN100457589C CN 100457589 C CN100457589 C CN 100457589C CN B2006100125587 A CNB2006100125587 A CN B2006100125587A CN 200610012558 A CN200610012558 A CN 200610012558A CN 100457589 C CN100457589 C CN 100457589C
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Abstract
The present invention relates to a method for making up-going lime bin pump implement automatic blockage elimination and its continuous operation. Said method is implemented by utilizing existent lime bin pump system, central processor in control circuit and process control software stored in EEPROM. It is characterized by that between main lime-conveying pipe and lime-stored tank a lime-discharging pipe and a controlled lime-discharging valve are set. Besides, it also includes the components of air inlet tube, etc. Said invention also provides the concrete steps for implement said method.
Description
Technical field
The present invention relates to upstriker ash storehouse pump and realize the method for automatic block clearing and continuous handling thereof.
Background technology
The a large amount of fly ash that produce in the thermoelectric power station production are collected the storage ash bucket through electric dust collector, are delivered to grey storehouse through grey storehouse pumping system again.Existing grey storehouse pumping system adopts upstriker ash storehouse pump mostly, comprises the cone pump body in the system architecture, and the fluidized-bed structure at the bottom of the storehouse is connected with the compressed gas house steward by air inlet valve, and Cang Ding is provided with the pressurized feed mouth and is connected with valve system by pressurizing valve.In the upstriker ash pipeline from the top straight cutting of storehouse pump to the storehouse at the bottom of, fluidisation bed surface top, in the existing technology in the pump of upstriker ash storehouse ash pipeline be communicated with main ash pipeline by a bleeder valve.Total system is set in out the below of ash bucket by a blanking valve and flapper, by means of the height of γ level-sensing device control blanking.Present structure inevitably can cause fly ash to produce obstruction in the process of transmission.Thereby cause the interruption of total system operation, remove to dredge pipeline.Because the static friction force of ash pipeline lower end deposition dying embers in the time of need overcoming each start, the ash output valve that is positioned on the outer main ash pipeline of storehouse pump must be closed, and goods fluid is finished and pressure is opened this bleeder valve when sufficient again in pump.Cause this bleeder valve frequently opening and closing under high-velocity stream is washed away like this, serious wear often needs to change bleeder valve, and the continuity of production can't be guaranteed, has improved operation cost widely.
Summary of the invention
The purpose of this invention is to provide one and on the pump of upstriker ash storehouse, realize the method for automatic block clearing, and on the basis of this method, provide the method that realizes the total system continuous handling.
What the present invention at first solved is how to handle in process of production because the blockage problem that the variation that press in the storehouse all may occur at any time.The reason of this obstruction is that material advances with wave in the process of transmission.When insufficient pressure, partial material deposits formation and piles up, and results in blockage.The superposition that can cause transmitting the logistics crest when excessive is pressed in the storehouse, directly forms and blocks the excessive easier obstruction of pressure often.Certainly, solving the method for stopping up is not produce obstruction, and the pressure maintenance of absolute stable storehouse is impossible.
Key of the present invention is by means of the central process unit in existing grey storehouse pumping system, the control circuit, and the process control software that is stored among the EEPROM realizes that concrete method comprises:
1. between main ash handing pipeline and storage ash bucket, be provided with and rush down grey pipeline, be provided with the controlled grey valve that rushes down in the pipeline,
2. be respectively equipped with pressure sensor at main ash handing pipeline and pump internal upper part space, storehouse,
The pressure data that sets in the standard pressure data interval in master's ash handing pipeline and pump internal upper part space, storehouse and the main ash handing pipeline under the blocked state and pump internal upper part space, storehouse deposits the specific region among the EEPROM in during 3. with normal operation,
4. realize automatic block clearing according to following steps:
A. the pressure data in the main ash handing pipeline that will gather according to the cycle of setting and pump internal upper part space, storehouse is delivered to central process unit and has been deposited the normal data processing of comparing, makes the block clearing judgement,
B. close all air inlet valves of storehouse pumping system,
C. open fast controlled rush down grey valve to the storage ash bucket rush down ash fast, close the controlled grey valve that rushes down after finishing,
D. open the storehouse pumping system and add air valve, pressurizing valve, and the pressure data in online acquisition master ash handing pipeline and pump housing internal upper part space, storehouse is delivered to central process unit and has been deposited the normal data processing of comparing, the life of main line pressure no longer raises to normal operating pressure, block clearing finishes, as continues to be increased to stop up to press and change the b step over to and enter and rush down ash manipulation once more and finish until block clearing.
Open the controlled grey valve that rushes down fast, can form main ash handing pipeline pressure and descend fast, it is slow to make that obstruction spot deposition thing drives, opening clearance, the mediation of pipeline after being beneficial to pressurize.Above method can online eliminating obstruction go on production process continuously.
The present invention makes upstriker ash storehouse pump realize that not shutting down continuous handling just may realize under the support of above method.The key of the following method that provides is the low pressure smooth starting problem that solves each transmission.
Upstriker ash provided by the present invention storehouse pump realizes that the continuous handling method needs the central process unit utmost point in existing grey storehouse pumping system, the control circuit and the process control software that is stored among the EEPROM to support that concrete content comprises:
1. the top near grey storehouse pump is provided with the balance openings tubule on interior ash pipeline, and interior ash pipeline directly is communicated with main ash pipeline,
2. insert one at interior ash pipeline lower port place and blow loose tubule, this pipe blows loose valve and is connected with pneumatic manifold by controlled,
3. each air inlet valve, inlet valve in the pumping system of grey storehouse all adopt controlled solenoid valve or pneumatic valve,
4. realize the continuous handling of upstriker ash storehouse pump according to following steps:
A. the cleaning air valve is opened in system start-up, checks the inflation pressure, confirms the state of bringing down stocks by central process unit,
B. close all air inlet valves, open inlet valve, by material deadweight and balance openings tubule in the ash bucket
Exhaust realizes Automatic feed, feed time to or level-sensing device close inlet valve after sending signal,
C. open air inlet valve, top, the storehouse pressurizing valve of fluid bed and pass in ash pipeline lower port place blow loose valve, the pressure in on-line measurement storehouse pump and the main ash pipeline is submitted to central process unit and is confirmed state,
D. the pressure in storehouse pump and the main ash pipeline is closed after the balance gradually and is blown loose valve, and the pressure of keeping in the main ash pipeline reaches normal working between the work nip of setting, and keep this state and finish until whole mass transport,
Less than retaining pressure down in limited time, open and blow loose valve if the pressure in the e. main ash pipeline exceeds maximum working pressure, the adjusting work differential pressure is closed and is blown loose valve to normal district, returns steps d,
If the pressure in the f. main ash pipeline adopts step e invalid when exceeding maximum working pressure, pressure continues to rise under the obstruction value that reaches setting in limited time, according to second page of step 4. in record method carry out automatic block clearing and handle, go to step c after the processing and carry out,
G. the online pressure that detects in storehouse pump and the main ash pipeline is dropped rapidly under the operation pressure interval, assert that this defeated ash finishes, and goes to a step and enters the next round operation.
Good effect of the present invention is the continuous running that can full automaticity realizes upstriker ash storehouse pump, is implemented in the adjusting of continuous operating material phase concentrations.When pipe is pressed with ascendant trend, can regulate by the keying of blowing loose valve or anti-blocking valve being carried out actv., avoid the generation of stopping up as much as possible.In case obstruction takes place then can disappear stifled automatically.Organic cooperation of blowing pine pipe and equalizing pipe can make every phase concentrations of carrying when starting of taking turns steadily rise, and whole process need not open and close bleeder valve, even omits bleeder valve, has fundamentally overcome the defective of prior art.
Description of drawings
Fig. 1 is the structural representation of the upstriker ash storehouse pumping system that the present invention relates to.
Wherein 1 is the grey storehouse pump pump housing, the 2nd, and storage ash bucket, the 3rd, blanking valve and flapper, the 4th, main ash pipeline, the 5th, rush down ash pipe, the 6th, controlledly rush down grey valve, the 7th, anti-blocking valve, the 8th, interior ash pipeline, the 9th, balance tubule, the 10th, blow the pine pipe, the 11st, blow loose valve, the 12nd, fluid bed, the 13rd, add air valve, the 14th, air chamber, the 15th, pressurizing valve, the 16th, compressed-air actuated gas main, the 17th, anti-blocking blowpipe.
Further specify below in conjunction with accompanying drawing and the objective of the invention is how to realize.
The specific embodiment
Can clearly recognize with reference to the accompanying drawings, content of the present invention is that original upstriker ash storehouse pump configuration has been done crucial improvement, designed the automatic block clearing method under the presence on the improved again basis, on this design-calculated basis, upstriker ash storehouse pump has been realized that automatic continuous operation redesigns.
The method of automatic block clearing realizes that by means of central process unit in the complete set in the pumping system of existing grey storehouse configuration, the control circuit and the process control software that is stored among the EEPROM thereof key is:
1. between main ash pipeline 4 and storage ash bucket 2, be provided with and rush down ash pipe 5, be provided with the controlled grey valve 6 that rushes down in the pipeline.2. be respectively equipped with pressure sensor at main ash pipeline 4 and the storehouse pump housing 1 internal upper part space, the pressure data that the standard pressure data in master's ash handing pipeline and pump housing internal upper part space, storehouse and the main ash handing pipeline under the blocked state and pump internal upper part space, storehouse set during 3. with normal operation deposits the specific region among the EEPROM in, 4. realizes automatic block clearing according to following steps:
A. the pressure data in the main ash handing pipeline that will gather according to the cycle of setting and pump housing internal upper part space, storehouse is delivered to central process unit and has been deposited the normal data processing of comparing, makes the block clearing judgement,
B. close grey storehouse all air inlet valves of pumping system,
C. open fast controlled rush down grey valve 6 to the storage ash bucket 2 rush down ash fast, close the controlled grey valve that rushes down after finishing,
That d. opens grey storehouse pumping system adds air valve (13), pressurizing valve (15), and the pressure data in online acquisition master ash handing pipeline and pump housing internal upper part space, storehouse is delivered to central process unit and has been deposited the normal data processing of comparing, main line pressure no longer raises after rising to normal operating pressure, block clearing finishes, as continues to be increased to stop up to press and change the b step over to and enter and rush down ash manipulation once more and finish until block clearing.
The groundwork of automatic block clearing method is very similar to carrying of mediation sewer pipe, often just can solve obstruction smoothly 2-3 time, and transportation work is continued.
In order further to simplify the operation, shorten the operating time, can take following measure:
1. controlled below of rushing down grey valve 6 has added anti-blocking blowpipe 17 between main ash pipeline 4 and the gas main 16, wherein disposed controlled anti-blocking valve 7.2. in steps d. storehouse pumping system inflation, the pressurizing valve opened only are meant controlled anti-blocking valve 7, after opening anti-blocking valve 7, main line pressure no longer raises after rising to normal operating pressure, block clearing finishes, the normal start-up routine that transfers system to, as continue to be increased to stop up to press and change the b step over to and enter and rush down ash manipulation once more and finish until block clearing, transfer the normal start-up routine of system to.
The method that upstriker ash storehouse pump is realized continuous handling realizes by means of central process unit in existing grey storehouse pumping system, the control circuit and the process control software that is stored among the EEPROM thereof, it is characterized in that:
1. be provided with the balance tubule 9 of opening on interior ash pipeline 8 near the top of the grey storehouse pump housing, interior ash pipeline 8 directly is communicated with main ash pipeline 4.2. insert one at interior ash pipeline 8 lower port places and blow loose tubule 10, this pipe blows loose valve 11 and is connected with compressed-air actuated gas main 16 by controlled.3. each air inlet valve, inlet valve in the pumping system of grey storehouse all adopt controlled solenoid valve or pneumatic valve.4. realize the continuous handling of upstriker ash storehouse pump according to following steps:
A. the cleaning air valve is opened in system start-up, checks the inflation pressure, confirms the state of bringing down stocks by central process unit,
B. close all air intake valves, start inlet valve and flapper 3, by material deadweight in the storage ash bucket 2 and balance tubule 9 exhausts realization Automatic feed, feed time to or level-sensing device close inlet valve after sending signal,
C. open fluid bed 12 add air valve 13, top, storehouse pressurizing valve 15 and pass in ash pipeline lower port place blow loose valve 11, the pressure in the on-line measurement storehouse pump housing 1 and the main ash pipeline 4 is submitted to central process unit and is confirmed state,
D. the pressure in storehouse pump and the main ash pipeline is closed after the balance gradually and is blown loose valve 11, and the pressure of keeping in the main ash pipeline reaches normal working between the work nip of setting, and keep this state and finish until whole mass transport,
If the pressure in the e. main ash pipeline 4 exceeds maximum working pressure but less than prescribing a time limit under the retaining pressure, opens and blow loose valve 11, after the extremely normal district of adjusting work differential pressure is interior, closes and blow loose valve, return steps d,
If adopt step e invalid when the pressure in the f. main ash pipeline 4 exceed maximum working pressure, pressure continues to rise under the obstruction value that reaches setting in limited time, according to second page of step 4. in the method for record automatic block clearing handle, go to step c after the processing and carry out,
G. the online pressure that detects in storehouse pump and the main ash pipeline is dropped rapidly under the operation pressure interval, assert that this defeated ash finishes, and goes to a step and enters the next round operation.
Balance tubule 9 can replace the effect of freeing pipe in the blanking process, make blanking carry out smoothly, at the initial stage of system start-up, balance tubule 9 can also play the effect of tonifying Qi, the solid concentration at adjusting initial stage, the obstruction that the instability of avoiding the initial stage to press because of conveying causes.Enter after the stabilized conditions, can continue to play tonifying Qi effect one stable transfer state.The pine pipe 10 that blows of fluid bed 12 tops is inserted in interior ash pipeline 8 lower port.He can actv. overcome be deposited on after the last end of transmission in the static friction force of big grain material of ash pipeline 8 lower port, guarantee that the startup of system is smooth.Can when the pipe voltage rise is high, rapid reaction regulate solid concentration simultaneously, in time correct the tendency that departs from normal value.
For further guaranteeing reliability of system operation and raising the efficiency and can also take following measure:
1. among the step e open blow loose valve 11 in, open anti-blocking valve 7, close blow loose valve 11 in, close anti-blocking valve 7,
2. interior ash pipeline 8 sectional areas are 10-50 with the ratio of balance tubule 9 sectional areas: 1, and interior ash pipeline diameter is 3-8 with blowing pine pipe diameter ratio: 1.
Claims (4)
1, a kind of upstriker ash storehouse pump is realized the method for automatic block clearing, and this method realizes by means of central process unit in existing grey storehouse pumping system, the control circuit and the process control software that is stored among the EEPROM, it is characterized in that:
1. between main ash pipeline (4) and storage ash bucket (2), be provided with and rush down ash pipe (5), be provided with the controlled grey valve (6) that rushes down in the pipeline,
2. be respectively equipped with pressure sensor at main ash pipeline (4) and the storehouse pump housing (1) internal upper part space,
The pressure data that the standard pressure data in master's ash handing pipeline and pump housing internal upper part space, storehouse and the main ash handing pipeline under the blocked state and pump internal upper part space, storehouse set during 3. with normal operation deposits the specific region among the EEPROM in,
4. realize automatic block clearing according to following steps:
A. the pressure data in the main ash handing pipeline that will gather according to the cycle of setting and pump housing internal upper part space, storehouse is delivered to central process unit and has been deposited the normal data processing of comparing, makes the block clearing judgement,
B. close grey storehouse all air inlet valves of pumping system,
C. open the controlled grey valve (6) that rushes down fast and rush down ash fast, close the controlled grey valve that rushes down after finishing to storage ash bucket (2),
That d. opens grey storehouse pumping system adds air valve (13), pressurizing valve (15), and the pressure data in online acquisition master ash handing pipeline and pump housing internal upper part space, storehouse is delivered to central process unit and has been deposited the normal data processing of comparing, main line pressure no longer raises after rising to normal operating pressure, block clearing finishes, as continues to be increased to stop up to press and change the b step over to and enter and rush down ash manipulation once more and finish until block clearing.
2, realize the method for automatic block clearing according to the said upstriker ash of claim 1 storehouse pump, it is characterized in that:
1. controlled below of rushing down grey valve (6) has added anti-blocking blowpipe (17) between main ash pipeline (4) and the gas main (16), has wherein disposed controlled anti-blocking valve (7),
2. steps d. in to open the operation that adds air valve (13), pressurizing valve (15) directly alternative with opening controlled anti-blocking valve (7), after opening anti-blocking valve (7), main line pressure no longer raises after rising to normal operating pressure, block clearing finishes, the normal start-up routine that transfers system to, as continue to be increased to stop up to press and change the b step over to and enter and rush down ash manipulation once more and finish until block clearing, transfer the normal start-up routine of system to.
3, a kind of upstriker ash storehouse pump is realized the method for continuous handling, and this method realizes by means of central process unit in existing grey storehouse pumping system, the control circuit and the process control software that is stored among the EEPROM, it is characterized in that:
1. go up the balance tubule (9) that is provided with opening near the top of the grey storehouse pump housing at interior ash pipeline (8), interior ash pipeline (8) directly is communicated with main ash pipeline (4),
2. insert one at interior ash pipeline (8) lower port place and blow loose tubule (10), this pipe is connected with compressed-air actuated gas main (16) by the controlled loose valve (11) that blows,
3. each air inlet valve, inlet valve in the pumping system of grey storehouse all adopt controlled solenoid valve or pneumatic valve,
4. realize the continuous handling of upstriker ash storehouse pump according to following steps:
A. the cleaning air valve is opened in system start-up, checks the inflation pressure, confirms the state of bringing down stocks by central process unit,
B. close all air inlet valves, start inlet valve and flapper (3), by material deadweight in the storage ash bucket (2) and balance tubule (9) exhaust realization Automatic feed, feed time to or level-sensing device close inlet valve after sending signal,
C. open fluid bed add air valve (13), top, storehouse pressurizing valve (15) and pass in ash pipeline lower port place blow loose valve (11), the pressure in the on-line measurement storehouse pump housing (1) and the main ash pipeline (4) is submitted to central process unit affirmation state,
D. the pressure in storehouse pump and the main ash pipeline is closed after the balance gradually and is blown loose valve (11), and the pressure of keeping in the main ash pipeline reaches normal working between the work nip of setting, and keep this state and finish until whole mass transport,
, open and blow loose valve (11) less than prescribing a time limit under the retaining pressure if the pressure in the e. main ash pipeline (4) exceeds maximum working pressure, after the extremely normal district of adjusting work differential pressure is interior, closes and blow loose valve, return steps d,
If adopt step e invalid when the pressure in the f. main ash pipeline (4) exceeds maximum working pressure, pressure continue to rise under the obstruction value that reaches setting in limited time, adopt the method for the said upstriker ash of claim 1 storehouse pump realization automatic block clearing to handle, go to step c after the processing and carry out
G. the online pressure that detects in storehouse pump and the main ash pipeline is dropped rapidly under the operation pressure interval, assert that this defeated ash finishes, and goes to a step and enters the next round operation.
4, realize the method for continuous handling according to the said upstriker ash of claim 3 storehouse pump, it is characterized in that:
1. among the step e open blow loose valve (11) in, open anti-blocking valve (7), close blow loose valve (11) in, close anti-blocking valve (7),
The ratio of 2. interior ash pipeline (8) sectional area and balance tubule (9) sectional area is 10-50: 1, and interior ash pipeline diameter is 3-8 with blowing pine pipe diameter ratio: 1.
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| CNB2006100125587A CN100457589C (en) | 2006-03-31 | 2006-03-31 | Method of realizing automatic block clearing and continuous operation of up flow type ash cabin pump |
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| CNB2006100125587A CN100457589C (en) | 2006-03-31 | 2006-03-31 | Method of realizing automatic block clearing and continuous operation of up flow type ash cabin pump |
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| CN100457589C true CN100457589C (en) | 2009-02-04 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1923643B (en) * | 2006-09-04 | 2010-06-23 | 李玉清 | Method of alternately operating long-distance dredging and transportation for concentrated phase powdery material |
| CN101952058B (en) * | 2007-12-11 | 2012-09-05 | 沙索技术有限公司 | Cleaning and/or unblocking of process equipment |
| CN102134006B (en) * | 2011-05-03 | 2013-08-07 | 福建龙净环保股份有限公司 | Conveying control method for pneumatic conveying system |
| CN103600994A (en) * | 2013-11-22 | 2014-02-26 | 镇江市电站辅机厂有限公司 | Pneumatic limestone powder conveying system |
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| CN2764742Y (en) * | 2004-12-16 | 2006-03-15 | 吴伟利 | Inrush current type pneumatic conveying apparatus |
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2006
- 2006-03-31 CN CNB2006100125587A patent/CN100457589C/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0027909A1 (en) * | 1979-10-26 | 1981-05-06 | Krupp Polysius Ag | Installation for conveying fine-grained material |
| US5265983A (en) * | 1992-06-02 | 1993-11-30 | The Babcock & Wilcox Company | Cascading pressure continuous blow bottle |
| CN2317217Y (en) * | 1997-01-14 | 1999-05-05 | 冶金工业部钢铁研究总院 | High efficiency storehouse type pump conveying material in bulk |
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