CN112642230B - Correlation determination method for air bag pressure change and pulse valve working state of intelligent self-checking ash removal device - Google Patents
Correlation determination method for air bag pressure change and pulse valve working state of intelligent self-checking ash removal device Download PDFInfo
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- CN112642230B CN112642230B CN202011369310.2A CN202011369310A CN112642230B CN 112642230 B CN112642230 B CN 112642230B CN 202011369310 A CN202011369310 A CN 202011369310A CN 112642230 B CN112642230 B CN 112642230B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/04—Cleaning filters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
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Abstract
The invention discloses a correlation judgment method for pressure change of an air bag and working state of a pulse valve of an intelligent self-checking ash removal device. The specific fault of the pulse valve component can be judged by combining signals of the pressure sensor and the signal collector, and fault information is transmitted to the mobile terminal or the computer, so that operating personnel or management personnel can know the working state of the bag-type intelligent self-checking dust removal device in time conveniently.
Description
The invention is a divisional application of Chinese patent application with the application date of 2018, 8 and 23 months and the application number of 2018109698483, and the invention is named as an intelligent self-checking ash cleaning device and a correlation determination method of pressure change of a gas distribution box and the working state of a pulse valve.
Technical Field
The invention relates to a correlation determination method for air bag pressure change and a pulse valve working state of an intelligent self-checking ash removal device.
Background
With the national emphasis on atmospheric pollution control and the requirements on energy conservation and emission reduction, dust removal systems have been widely used in various industries. A bag filter is a dry dust filter. After the filter material is used for a period of time, due to the effects of screening, collision, detention, diffusion, static electricity and the like, a layer of dust is accumulated on the surface of the filter bag, the layer of dust is called as a primary layer, in the later movement process, the primary layer becomes a main filter layer of the filter material, and the filter material with larger meshes can obtain higher filtering efficiency by virtue of the action of the primary layer. Along with the accumulation of dust on the surface of the filter material, the efficiency and the resistance of the bag-type dust collector are correspondingly increased, and when the pressure difference between two sides of the filter material is large, some fine dust particles attached to the filter material are extruded, so that the efficiency of the bag-type dust collector is reduced. In addition, the too high resistance of the bag-type dust collector can cause the air volume of the dust removal system to be remarkably reduced. Therefore, after the resistance of the bag type dust collector reaches a certain value, the dust is cleaned in time, and the electromagnetic pulse valve is a core component of a dust cleaning system of the bag type dust collector, so that the operation and maintenance management of the electromagnetic pulse valve are particularly important. The number of the electromagnetic pulse valves is greatly increased along with the large-scale of the bag type dust collector; meanwhile, the blowing sequence of the electromagnetic pulse valves is usually not arranged according to natural serial numbers, but arranged in a 'jumping' and 'discrete' manner, the distance between the adjacent two blown electromagnetic pulse valves is often long, and it is difficult to manually sense the blowing condition of each electromagnetic pulse valve. The invention aims to provide an intelligent detection method capable of judging the working condition of an electromagnetic pulse valve according to the pressure change of an air bag, and solves the problem of difficulty in manual inspection of the electromagnetic pulse valve.
Disclosure of Invention
The invention aims to provide a method for judging correlation between air bag pressure change and working state of a pulse valve of an intelligent self-checking ash removal device.
In order to achieve the effect, the invention adopts the following scheme: the intelligent self-checking ash cleaning device comprises an air bag, injection pipes connected with the air bag, a pulse valve arranged on the injection pipes, a control unit for controlling the air bag and the pulse valve to work, and an air bag pressure sensor arranged in the air bag and used for detecting the air pressure, wherein the control unit comprises a signal collector used for recording the opening and closing time of the pulse valve on each injection pipe, and realizes data transmission with a mobile terminal or a computer through wireless signals, and the association determination method comprises the following steps:
under the condition of normal set working condition, after the volume of the air bag for the pulse valve is determined, the pressure in the air bag is P when the pulse valve is not used for blowing0After the blowing is finished, the pressure when air supply is started is P1The pressure detected by the air bag pressure sensor is P2 ，P2- P1=δP，P0- P1K, K is the nominal value; pulse valve is atUnder the same injection pressure and the same pulse width, the injection time from the beginning of the injection of the pulse valve to the end of the injection is t3 ，t3Equal to the nominal value M; t is t4Is the sum of the pulse valve blowing time and the air pocket recovery time, t4Increase P1The air bag is not changed, and the air inflation speed of the air bag is too low; t is t1For the pulse valve pulse time, when t1Invariable, deltaP＞K，t3If' > M, the leading head of the pulse valve is failed, t3' is the actual blowing time from the beginning of blowing to the end of blowing of the pulse valve; when t is1Invariable, deltaP、t3If the value is smaller than the normal value, the pulse valve diaphragm is judged to be closed quickly, the pulse valve diaphragm is damaged or the input electric signal is not in accordance with the actual value, the electric signal is input abnormally, and t1、t3' invariant, deltaPIf the pressure is too small or too large, the working diaphragm is judged to be broken.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: the working condition of the electromagnetic pulse valve can be rapidly and timely obtained according to the pressure change in the air bag through the pressure sensor arranged in the air bag.
Drawings
FIG. 1 is a schematic diagram of an intelligent self-checking ash removal device in a preferred embodiment of the invention;
fig. 2 is a schematic diagram of the pressure change detected by the sensor and the pulse width signal collected by the signal collector.
Detailed Description
The invention will be further described with reference to examples of embodiments shown in the drawings to which the invention is attached.
As shown in fig. 1, the intelligent self-checking ash removal device comprises an air bag 1, an injection pipe 2 connected with the air bag, an electromagnetic pulse valve 3 installed on the injection pipe, a control unit for controlling the air bag and the electromagnetic pulse valve to work, and an air bag pressure sensor 4 for detecting the gas pressure in the air bag, wherein the control unit comprises a signal collector 5 for recording the opening and closing time of the electromagnetic pulse valve on each injection pipe.
As shown in fig. 2, when the electromagnetic pulse valve receives an electric signal t1Work byWhen the electromagnetic pulse valve has no fault, t is measured after the pressure of the air bag is determined2 、t3 、t4、δPCan be regarded as a constant value with small fluctuation (t)4The sum of the injection time of the electromagnetic pulse valve and the recovery time of the air bag; t is t3The injection time of the electromagnetic pulse valve; t is t2The injection delay time of the electromagnetic pulse valve; t is t1Electromagnetic pulse valve electrical pulse time), we can compare t2 、t3 、t4、δPThe fluctuation is set to an allowable range and a decision rule is set. If the range is exceeded, whether the electromagnetic pulse valve is working abnormally or fails is determined according to a predetermined determination rule.
Based on the intelligent self-checking ash removal device, the method for judging the working condition of the electromagnetic pulse valve of the intelligent self-checking ash removal device by utilizing the signal of the pressure sensor in the intelligent self-checking ash removal device comprises the following steps:
a. the pressure in the air bag is P when the blowing is not performed under the condition of normal set working condition0After the blowing is finished, the pressure of the air bag is quickly changed from P0Value decreases to P1And is recovered to P0In this process, P0- P1K, = K, rated value, P1Is the lowest value of the decrease of the blowing pressure after blowing, P0- P1K, K is the nominal value,
b. setting the pressure detected by the air bag pressure sensor to be P after the blowing is finished under the working state2 ，P2- P1=δPWhen K-delta1≤δP ≤K+δ2When in use, each component works normally, wherein 0 < delta1≤K，δ2Not less than 0; when deltaP＜K-δ1Or δ P > K + δ2And when the electromagnetic pulse valve assembly fails.
The same gas bag is provided with a plurality of electromagnetic pulse valves, when the delta of less than half of the electromagnetic pulse valvesP＜（K-δ1) And delta of other solenoid pulse valvesPWhen normal, it can be judged that the solenoid pulse valve is faulty, when not less than half of the delta of the solenoid pulse valveP＜（K-δ1) Then the electromagnetic pulse can be determinedThe impulse valve is normal, but other factors cause the electromagnetic impulse valve not to work normally, other factors include insufficient input voltage of the electromagnetic impulse valve, when less than half of the delta of the electromagnetic impulse valveP＞K+δ2Judging that the electromagnetic pulse valve leaks air; when delta of all electromagnetic pulse valvesP＞K+δ2And judging that the input pulse width of the electromagnetic pulse valve is too long.
Based on the intelligent self-checking ash removal device, the method for judging the working condition of the electromagnetic pulse valve of the intelligent detection bag type intelligent self-checking ash removal device by utilizing the signal of the signal collector in the intelligent self-checking ash removal device comprises the following steps:
a. under the condition that the set working condition is normal, after the volume of the air bag for the electromagnetic pulse valve is determined, the electromagnetic pulse valve is under the same injection pressure and the same pulse width, and the injection time from the beginning to the end of the injection of the electromagnetic pulse valve is t3 ，t3Equal to the nominal value M;
b. setting the injection time from the beginning to the end of the injection of the electromagnetic pulse valve recorded by the signal collector to be t under the working state0When M-delta3≤t0 ≤M+δ4When in use, each component works normally, wherein 0 < delta3≤M，δ4≥0(ii) a When t is0＜M-δ3Or t0＞M+δ4And when the electromagnetic pulse valve assembly fails.
Several electromagnetic pulse valves are installed in the same gas bag, when t of the electromagnetic pulse valves is less than half0＜M-δ3When other electromagnetic pulse valves are normal, t can be determined0＜M-δ3The part of the solenoid pulse valve that fails, when not less than half of the solenoid pulse valves t0＜M-δ3If the input voltage of the electromagnetic pulse valve is less than half of the input voltage, the electromagnetic pulse valve can be judged to be normal, and the electromagnetic pulse valve cannot work normally due to external factors, such as insufficient input voltage of the electromagnetic pulse valve0＞M+δ4Judging that the electromagnetic pulse valve leaks air; when t of all electromagnetic pulse valves0＞M+δ4And judging that the input pulse width of the electromagnetic pulse valve is too long.
The method for judging the working condition of the electromagnetic pulse valve of the intelligent detection bag type intelligent self-detection ash removal device by combining the two groups of data comprises the following steps:
under the condition of normal set working condition, after the volume of the air bag for the electromagnetic pulse valve is determined, the pressure in the air bag when the electromagnetic pulse valve is not injected is P0Air bag pressure rapidly from P0Value decreases to P1（P1The lowest value of the reduction of the blowing pressure after blowing) is recovered to P0In this process, P0- P1K, K is the nominal value; under the condition that the electromagnetic pulse valve has the same injection pressure and the same pulse width, the injection time from the beginning to the end of the injection of the electromagnetic pulse valve is t3 ，t3Equal to the nominal value M; t is t4Is the sum of the injection time of the electromagnetic pulse valve and the recovery time of the air bag, t4Increase P1The air bag is not changed, and the air inflation speed of the air bag is too low; t is t1For the time of the electric pulse of the electromagnetic pulse valve, when t1Invariable, deltaP＞K，t3If' > M, the pilot head of the electromagnetic pulse valve is failed, t3' is the actual blowing time from the beginning of blowing to the end of blowing of the pulse valve; when t is1Invariable, deltaP、t3 If the value is smaller than the normal value, the closing speed of the electromagnetic pulse valve membrane is judged, the electromagnetic pulse valve membrane is damaged, and t1、t3' invariant, deltaPIf the pressure is too small or too large, it is judged that the working diaphragm is broken.
The half number is adjusted according to the actual condition of the blowing pipes, and the number of the blowing pipes is set to be n, when n is an even number, the half number is n/2, when n is an odd number, the half number is (n-1)/2.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (1)
1. The intelligent self-checking ash cleaning device comprises an air bag, injection pipes connected with the air bag, a pulse valve arranged on the injection pipes, a control unit for controlling the air bag and the pulse valve to work, and an air bag pressure sensor arranged in the air bag and used for detecting the air pressure, wherein the control unit comprises a signal collector used for recording the opening and closing time of the pulse valve on each injection pipe, and realizes data transmission with a mobile terminal or a computer through wireless signals, and is characterized in that the association determination method comprises the following steps:
under the condition of normal set working condition, after the volume of the air bag for the pulse valve is determined, the pressure in the air bag is P when the pulse valve is not used for blowing0After the blowing is finished, the pressure when air supply is started is P1The pressure detected by the air bag pressure sensor is P2 ，P2- P1=δP，P0- P1K, K is the nominal value; under the condition that the pulse valve has the same blowing pressure and the same pulse width, the blowing time from the beginning to the end of the blowing of the pulse valve is t3 ，t3Equal to the nominal value M; t is t4Is the sum of the pulse valve blowing time and the air pocket recovery time, t4Increase P1The air bag is not changed, and the air inflation speed of the air bag is too low; t is t1For the pulse valve pulse time, when t1Invariable, deltaP＞K， t3If' > M, the leading head of the pulse valve is failed, t3' is the actual blowing time from the beginning of blowing to the end of blowing of the pulse valve; when t is1Invariable, deltaP、t3If the value is smaller than the normal value, the pulse valve diaphragm is judged to be closed quickly, the pulse valve diaphragm is damaged or the input electric signal is not in accordance with the actual value, the electric signal is input abnormally, and t1、t3' invariant, deltaPIf the pressure is too small or too large, it is judged that the working diaphragm is broken.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011369310.2A CN112642230B (en) | 2018-01-23 | 2018-08-24 | Correlation determination method for air bag pressure change and pulse valve working state of intelligent self-checking ash removal device |
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| CN201810061770 | 2018-01-23 | ||
| CN201810969848.3A CN109011889B (en) | 2018-01-23 | 2018-08-24 | Correlation determination method for pressure change of gas distribution box of intelligent self-checking ash removal device and working state of pulse valve |
| CN202011369310.2A CN112642230B (en) | 2018-01-23 | 2018-08-24 | Correlation determination method for air bag pressure change and pulse valve working state of intelligent self-checking ash removal device |
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| CN201810969848.3A Division CN109011889B (en) | 2018-01-23 | 2018-08-24 | Correlation determination method for pressure change of gas distribution box of intelligent self-checking ash removal device and working state of pulse valve |
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| CN201810969848.3A Active CN109011889B (en) | 2018-01-23 | 2018-08-24 | Correlation determination method for pressure change of gas distribution box of intelligent self-checking ash removal device and working state of pulse valve |
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| CN109827768A (en) * | 2019-02-28 | 2019-05-31 | 合肥中亚环保科技有限公司 | A kind of pulse valve fault detection method and system |
| CN110360366A (en) * | 2019-07-31 | 2019-10-22 | 苏州协昌环保科技股份有限公司 | Sound wave perceives intelligent electromagnetic pulse valve and operating condition judgment method |
| CN111346440B (en) * | 2020-03-31 | 2023-12-26 | 上海袋式除尘配件有限公司 | Intelligent electromagnetic pulse valve fault detection system and detection method thereof |
| CN113230773B (en) * | 2021-06-22 | 2023-12-26 | 上海袋式除尘配件有限公司 | Intelligent detection system and detection method for electromagnetic pulse valve faults |
| CN113856356A (en) * | 2021-08-09 | 2021-12-31 | 苏州协昌环保科技股份有限公司 | Working condition judgment method of intelligent electromagnetic pulse valve |
| CN115430230A (en) * | 2022-11-03 | 2022-12-06 | 湖南洁滤环保科技有限公司 | Inlet and outlet control method for bag-type dust collector |
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| JP3364548B2 (en) * | 1995-01-25 | 2003-01-08 | ツカサ工業株式会社 | Automatic cleaning system inside various powder processing equipment |
| US6605139B2 (en) * | 1999-11-05 | 2003-08-12 | Southern Research Institute | Apparatus and method for improved pulse-jet cleaning of industrial filters |
| EP2489410A1 (en) * | 2011-02-17 | 2012-08-22 | Minimax GmbH & Co KG | Protection device with a pressure container |
| CN202460349U (en) * | 2012-02-22 | 2012-10-03 | 新兴铸管股份有限公司 | Back blowing fault warning device for pulse back blowing cloth bag dust remover |
| KR20150028413A (en) * | 2013-09-06 | 2015-03-16 | 이경옥 | Error sensory system of air pulse valve for dust collector using pressure sensor |
| CN103446825B (en) * | 2013-09-09 | 2015-08-05 | 鞍钢集团矿业公司 | A kind of pulse valve of bag-type dust collector fault detection system and detection method |
| CN205199169U (en) * | 2015-09-24 | 2016-05-04 | 贵州安泰再生资源科技有限公司 | Take pressure monitoring's gas tank pulse bag house dust collector device |
| CN106369219B (en) * | 2016-08-31 | 2018-10-02 | 苏州协昌环保科技股份有限公司 | Electromagnetic impulse valve detection method and detecting system |
| CN106404366B (en) * | 2016-08-31 | 2018-11-13 | 苏州协昌环保科技股份有限公司 | Electromagnetic impulse valve detection method and detecting system |
| CN206054882U (en) * | 2016-08-31 | 2017-03-29 | 苏州协昌环保科技股份有限公司 | Electromagnetic impulse valve and electromagnetic impulse valve detecting system |
| CN207462873U (en) * | 2017-10-09 | 2018-06-08 | 中钢集团天澄环保科技股份有限公司 | Pulse pocket type dust catcher deashing dynamic pulse Separation control system |
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