CN104258644A - Rapid leak detection method of dust removal filter bag - Google Patents
Rapid leak detection method of dust removal filter bag Download PDFInfo
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- CN104258644A CN104258644A CN201410452967.3A CN201410452967A CN104258644A CN 104258644 A CN104258644 A CN 104258644A CN 201410452967 A CN201410452967 A CN 201410452967A CN 104258644 A CN104258644 A CN 104258644A
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Abstract
The invention discloses a rapid leak detection method of a dust removal filter bag. The rapid leak detection method comprises the following steps: (1) observing by following operating periods of a lifting gas cylinder and a pulse valve, and determining that damage is caused if a chimney discharges smoke when the pulse valve works for 5-15 seconds; (2) opening a box cover in a shutdown state, and determining the damaged position if dust is generated from a damaged filter bag; opening the box cover when a system is not in the shutdown state, removing a pulse blowpipe, and determining the damaged position of the filter bag if scouring traces are generated around an air outlet of the blowpipe; opening the box cover, wherein a relatively large amount of dust deposits are accumulated on a pattern pore plate, and determining the damaged position of the filter bag if the dust deposits are generated around a filter bag opening; and (3) determining the damaged part of the filter bag if the scouring traces are generated at the filter bag opening towards an air suction opening. The rapid leak detection method disclosed by the invention can ensure that a dust collector can timely and accurately determine the specific damaged position of the filter bag under the condition of discovering that the chimney discharges the smoke, so that the maintenance time can be greatly shortened, and the maintenance efficiency can be improved.
Description
Technical field
The invention belongs to metallurgical technology field, relate to a kind of dedusting technology, specifically the quick leak detection of a kind of dedusting filtering bag.
Background technology
Dedusting filtering bag is a kind of dedusting filtrate efficiently, and have venting capability good, efficiency of dust collection is high, and have certain acidproof, alkaline-resisting and temperature capacity, have employed polygon napping in braiding process, improve fabric thickness, high resilience, dust removing effects is very good, dedusting filtering bag generally takes terylene short fiber or long fibre to be raw material, service life be generally the 4-6 of glass fabric doubly, have good gas permeability, dust collection efficiency is high, hold deashing, dust removal efficiency can reach 99.99%.
Filter bag is the major spare part of dust pelletizing system; its effect is the dust in filtered airflow; but under the washing away of air-flow and dust; filter bag often can damage; the filter bag that more filter bag could find to damage to be extracted at every turn when changing filter bag out, wasting time and energy with the process of changing, inefficiency; the time and efforts of waste staff, affects production efficiency.
Summary of the invention
Technical problem to be solved by this invention is, overcome the shortcoming of prior art, provide a kind of dedusting filtering bag quick leak detection, ensure that deduster emits when ash can promptly and accurately judge the particular location that filter bag damages at discovery chimney, greatly can shorten the time of maintenance, improve overhaul efficiency.
In order to solve above technical problem, the invention provides the quick leak detection of a kind of dedusting filtering bag, comprising following concrete steps:
(1) follow lifting cylinder to scene, the cycle of pulse valve work observes, when pulse valve work 5-15 second, the chimney smokes, then tentatively can judge have filter bag to damage;
(2) when dust pelletizing system is stopped status, open case lid and observe, the filter bag of damage has a small amount of dust and emerge, can judge that filter bag damages position accordingly; When dust pelletizing system is not shut down, open case lid, remove pulse blowpipe, blowpipe generally divides 16 gas outlets, if gas outlet pipeline has the vestige be washed, then can judge that filter bag damages position further; Or, after opening case lid, in casing, have more dust stratification to be deposited on colored orifice plate, observe filter pocket mouths, if having dust stratification around filter pocket mouths, then can judge that filter bag damages position;
(3) when blowpipe distance filter bag position is higher, check that filter pocket mouths is towards the direction of inlet scoop, if the party upwards has the vestige washed away, accurately can judge the damaged location of filter bag.
The technical scheme that the present invention limits further is:
In step (), when online, then lifting cylinder to be waited to mention, if the chimney smokes, then tentatively can judge have filter bag to damage.
The invention has the beneficial effects as follows:
The inventive method mainly applies to the maintenance of blast furnace region dedusting filtering bag, can ensure that deduster emits when ash can promptly and accurately judge the particular location that filter bag damages at discovery chimney, improve the quality of maintenance, avoid blindness, substantially reduce the time of maintenance, improve overhaul efficiency.
Detailed description of the invention
embodiment 1
The present embodiment provides a kind of dedusting filtering bag quick leak detection, comprises following concrete steps:
(1) follow lifting cylinder to scene, the cycle of pulse valve work observes, when pulse valve work 5-15 second, the chimney smokes, then tentatively can judge have filter bag to damage;
(2) when dust pelletizing system is stopped status, open case lid and observe, the filter bag of damage has a small amount of dust and emerge, can judge that filter bag damages position accordingly; When dust pelletizing system is not shut down, open case lid, remove pulse blowpipe, blowpipe generally divides 16 gas outlets, if gas outlet pipeline has the vestige be washed, then can judge that filter bag damages position further; Or, after opening case lid, in casing, have more dust stratification to be deposited on colored orifice plate, observe filter pocket mouths, if having dust stratification around filter pocket mouths, then can judge that filter bag damages position;
(3) when blowpipe distance filter bag position is higher, check that filter pocket mouths is towards the direction of inlet scoop, if the party upwards has the vestige washed away, accurately can judge the damaged location of filter bag.
In abovementioned steps (), when online, then lifting cylinder to be waited to mention, if the chimney smokes, then tentatively can judge have filter bag to damage.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.
Claims (2)
1. the quick leak detection of dedusting filtering bag, is characterized in that, comprises following concrete steps:
(1) follow lifting cylinder to scene, the cycle of pulse valve work observes, when pulse valve work 5-15 second, the chimney smokes, then tentatively can judge have filter bag to damage;
(2) when dust pelletizing system is stopped status, open case lid and observe, the filter bag of damage has a small amount of dust and emerge, can judge that filter bag damages position accordingly; When dust pelletizing system is not shut down, open case lid, remove pulse blowpipe, blowpipe generally divides 16 gas outlets, if gas outlet pipeline has the vestige be washed, then can judge that filter bag damages position further; Or, after opening case lid, in casing, have more dust stratification to be deposited on colored orifice plate, observe filter pocket mouths, if having dust stratification around filter pocket mouths, then can judge that filter bag damages position;
(3) when blowpipe distance filter bag position is higher, check that filter pocket mouths is towards the direction of inlet scoop, if the party upwards has the vestige washed away, accurately can judge the damaged location of filter bag.
2. the quick leak detection of dedusting filtering bag according to claim 1, is characterized in that, in described step (), when online, then lifting cylinder will be waited to mention, if the chimney smokes, then tentatively can judge have filter bag to damage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410452967.3A CN104258644A (en) | 2014-09-09 | 2014-09-09 | Rapid leak detection method of dust removal filter bag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410452967.3A CN104258644A (en) | 2014-09-09 | 2014-09-09 | Rapid leak detection method of dust removal filter bag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104258644A true CN104258644A (en) | 2015-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410452967.3A Pending CN104258644A (en) | 2014-09-09 | 2014-09-09 | Rapid leak detection method of dust removal filter bag |
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| CN (1) | CN104258644A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109647061A (en) * | 2018-12-18 | 2019-04-19 | 新乡中新化工有限责任公司 | A kind of operating method for fine coal chemical industry filter bag leakage detection |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5298273A (en) * | 1976-02-14 | 1977-08-17 | Nippon Kokan Kk <Nkk> | Method of inspecting filtering cloth of bag filter |
| CN1093562A (en) * | 1992-12-23 | 1994-10-19 | 酒泉钢铁公司 | The inspection method of damage of bag-type duster filtering bag and equipment |
| KR100657571B1 (en) * | 2005-04-21 | 2006-12-20 | 주식회사 포스코 | Device for replacing a damaged filter-bag with a new one and the method of using it |
| UA50045U (en) * | 2009-11-13 | 2010-05-25 | Украинский Государственный Научно-Технический Центр По Технологии И Оборудованию, Обработке Металлов, Защите Окружающей Среды И Использованию Вторичных Ресурсов Для Металлургии И Машиностроения "Энергосталь" | Bag filter for gas purification |
| CN102989242A (en) * | 2012-11-30 | 2013-03-27 | 鞍钢股份有限公司 | Method for inspecting damage of dust collecting bag |
-
2014
- 2014-09-09 CN CN201410452967.3A patent/CN104258644A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5298273A (en) * | 1976-02-14 | 1977-08-17 | Nippon Kokan Kk <Nkk> | Method of inspecting filtering cloth of bag filter |
| CN1093562A (en) * | 1992-12-23 | 1994-10-19 | 酒泉钢铁公司 | The inspection method of damage of bag-type duster filtering bag and equipment |
| KR100657571B1 (en) * | 2005-04-21 | 2006-12-20 | 주식회사 포스코 | Device for replacing a damaged filter-bag with a new one and the method of using it |
| UA50045U (en) * | 2009-11-13 | 2010-05-25 | Украинский Государственный Научно-Технический Центр По Технологии И Оборудованию, Обработке Металлов, Защите Окружающей Среды И Использованию Вторичных Ресурсов Для Металлургии И Машиностроения "Энергосталь" | Bag filter for gas purification |
| CN102989242A (en) * | 2012-11-30 | 2013-03-27 | 鞍钢股份有限公司 | Method for inspecting damage of dust collecting bag |
Non-Patent Citations (1)
| Title |
|---|
| 赵旭德: "《中小企业环保设备运行管理手册》", 30 June 2012, article ""滤袋"", pages: 52 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109647061A (en) * | 2018-12-18 | 2019-04-19 | 新乡中新化工有限责任公司 | A kind of operating method for fine coal chemical industry filter bag leakage detection |
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Application publication date: 20150107 |