CN109184857B - DPF efficient detonation cleaning regeneration method, control system and device - Google Patents
DPF efficient detonation cleaning regeneration method, control system and device Download PDFInfo
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- CN109184857B CN109184857B CN201811237043.6A CN201811237043A CN109184857B CN 109184857 B CN109184857 B CN 109184857B CN 201811237043 A CN201811237043 A CN 201811237043A CN 109184857 B CN109184857 B CN 109184857B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
- F01N11/002—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity the diagnostic devices measuring or estimating temperature or pressure in, or downstream of the exhaust apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/0232—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles removing incombustible material from a particle filter, e.g. ash
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N9/00—Electrical control of exhaust gas treating apparatus
- F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/04—Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in, combustion engines
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
The invention discloses a DPF high-efficiency detonation cleaning and regenerating method, which specifically comprises the following steps: s1, firstly, the regeneration device and the control system are assembled and wired, then a start/stop button is pressed, the level of a start/stop input port of the single chip microcomputer is turned over, and a switching value output signal of a high-pressure clean air inlet switching valve of the single chip microcomputer board drives the high-pressure clean air inlet switching valve to act through a peripheral isolation amplifying relay, and the regeneration device relates to the technical field of regeneration of diesel particle filters. This DPF high efficiency detonation washs regeneration method, control system and device can realize guaranteeing that oxyhydrogen gas concentration control is in safe effective range in the DPF, the ignition forms detonation in the DPF and becomes the granule burning CO2, produce high pressure simultaneously and go from the DPF export with remaining debris in the DPF and discharge, oxyhydrogen gas burning generates steam, can not produce new granule, electric control system reads real-time data and automatic judgement cleaning performance through the sensor, effectively prolongs DPF's life.
Description
Technical Field
The invention relates to the technical field of diesel particulate filter regeneration, in particular to a method, a control system and a device for efficient deflagration cleaning and regeneration of a DPF.
Background
DPF, i.e., a diesel particulate filter, means a device installed in an exhaust system of a diesel vehicle for reducing Particulate Matter (PM) in exhaust gas by filtration, and the DPF can effectively purify 70% to 90% of particles in exhaust gas, which is one of the most effective and direct methods for purifying diesel particulate matter, and has technical characteristics and difficulties: after a certain amount of particles are captured by a particle filter, an exhaust channel can be blocked, exhaust back pressure is increased, the performance of an engine is affected, the captured particles need to be removed, the exhaust is recovered to be normal, namely, regeneration is carried out, one of the regeneration modes is passive regeneration, a sensor measures the exhaust back pressure, when the back pressure is increased to a certain value, an ECU controls a special nozzle to spray diesel oil into an exhaust pipe, combustion flame is formed in the exhaust pipe, the internal temperature of the DPF is increased to 600-620 ℃, the captured particles are combusted to be CO2 to be discharged, the second regeneration mode is also passive regeneration, an engine oil injector is controlled by the ECU, oil injection is carried out at the later combustion stage of a cylinder, the exhaust temperature is increased, the internal temperature of the DPF is also increased to 600-620 ℃, the captured particles are combusted to be CO2 to be discharged, the third regeneration mode is also passive regeneration, high temperature is formed in a particle catcher by adopting an electric, burning the captured particles into CO2, discharging, wherein the fourth regeneration mode is active regeneration, and adding additives into the fuel oil to reduce the temperature of particle burning, so that the captured particles can be burned into CO2 at the normal working temperature of the engine, and then discharged.
The regeneration of the DPF described above has various problems: the diesel engine of the DPF used has poor economy because fuel or electric power is consumed, the method for adding the additive into the fuel oil is immature at present, a user is required to add the additive into the diesel oil, the actual operation is difficult, the DPF is very sensitive to sulfur in the fuel oil, and 15ppm of diesel oil is required to be used because the sulfur in the fuel oil can form sulfate at high temperature, the sulfate is particles and causes the emission of the particles to be increased, and then the sulfate is attached to the surface of a carrier coating and damages the coating, generates toxic and harmful substances and prevents a gaseous catalytic reaction from causing regeneration failure, thereby causing the emission of the particles to exceed the standard.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a method, a control system and a device for efficiently cleaning and regenerating DPF (diesel particulate filter), which solve the problems that fuel or electric power is required to be consumed, so that the used DPF diesel engine has poor economy, a user is required to add an additive into diesel oil, sulfur in fuel oil can form sulfate at high temperature to cause particle emission to rise, and then the sulfate is attached to the surface of a carrier coating to damage the coating, generate toxic and harmful substances, prevent gaseous catalytic reaction from causing regeneration failure and further cause the emission of particulate matters to exceed the standard.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: a DPF high-efficiency detonation cleaning regeneration method, a control system and a device specifically comprise the following steps:
s1, firstly, assembling and wiring the regeneration device and the control system, then pressing a start/stop button, turning the level of a start/stop input port of the singlechip, and driving the high-pressure clean air inlet switching valve to act by a switching value output signal of a high-pressure clean air inlet switching valve of a singlechip board through a peripheral isolation amplifying relay;
s2, opening the high-pressure clean air inlet switching valve, closing the oxyhydrogen inlet switching valve, allowing high-pressure clean air to enter the pressure container and the DPF through the high-pressure clean air inlet, discharging the high-pressure clean air after the high-pressure clean air passes through the DPF, after the pressure is stable, acquiring the pressure of the pressure sensor before and after the DPF by the singlechip board through an inlet pressure sensor analog input signal and an outlet pressure sensor analog input signal, and storing pressure data into a system data area;
s3, after the operation is finished, the high-pressure clean air inlet switching valve is closed, the oxyhydrogen inlet switching valve is opened, oxyhydrogen enters the pressure container and the DPF through the oxyhydrogen inlet, the DPF outlet is sealed by an airtight membrane, and the singlechip board acquires oxyhydrogen concentration data in the pressure container and the DPF through a hydrogen concentration sensor analog input signal and an oxygen concentration sensor analog input signal;
s4, when the concentration values of oxyhydrogen in the pressure container and the DPF are in a safe and effective range, the on-off output signal of the singlechip board 'electronic pulse igniter' drives the electronic pulse igniter to act through a peripheral isolation amplifying relay, an ignition signal is sent to the pulse igniter to act to ignite the oxyhydrogen, deflagration is formed in the pressure container and the DPF to combust particles into CO2 and water vapor, and simultaneously, high temperature and high pressure are instantaneously generated to discharge the residual impurities in the DPF from the DPF outlet;
s5, delaying for 3-5 seconds, enabling a switching value output signal of a high-pressure clean air inlet switching valve of a single-chip board to drive the high-pressure clean air inlet switching valve to act through a peripheral isolation amplifying relay, opening the high-pressure clean air inlet switching valve, closing a oxyhydrogen inlet switching valve, enabling high-pressure clean air to enter a pressure container and a DPF through a high-pressure clean air inlet, discharging the high-pressure clean air after the high-pressure clean air passes through the DPF, after the pressure is stabilized, enabling the single-chip board to acquire the pressure of a pressure sensor in front of and behind the DPF through an analog input signal of an inlet pressure sensor and an analog input signal of an outlet pressure sensor, and storing pressure data into;
s6, judging the cleaning effect after calculation and analysis by the single chip board processing unit, finding that particulate matters in the DPF are obviously reduced after deflagration cleaning, having obvious dredging effect, and cleaning by repeating a plurality of cycles from S1 to S2 according to needs.
Preferably, the deflagration gas is oxyhydrogen gas in steps S1 to S6, and any other combustible gas is included.
The invention discloses a DPF high-efficiency detonation cleaning regeneration control system which comprises a single chip microcomputer, a self-reset button, a hydrogen concentration sensor, an oxygen concentration sensor, pressure sensors, an audible and visual alarm, a power supply, a display monitoring touch screen and peripheral electrical elements, wherein the single chip microcomputer is of an STM32F103RET6 model, and two pressure sensor detection analog input signal interfaces, a hydrogen analog input signal interface, an oxygen concentration analog input signal interface, a regeneration device start/stop switching value input signal interface, an isolation valve output switching value interface, a switching valve output switching value interface, a pulse igniter output switching value interface and an audible and visual alarm output switching value interface are respectively arranged on the single chip microcomputer.
Preferably, the output interface of the single chip microcomputer is isolated and amplified with the isolation valve, the switching valve and the pulse igniter through four peripheral relays respectively, the display monitoring touch screen is in serial port communication with the single chip microcomputer, and the power supply is a 24VDC power supply provided by a 220 VAC-to-24 VDC switching power supply.
The invention also discloses a DPF high-efficiency detonation cleaning and regenerating device which comprises a oxyhydrogen gas inlet pipeline, a high-pressure clean air inlet pipeline, a DPF and an air-tight membrane, wherein a high-pressure clean air inlet switching valve is fixedly arranged inside the high-pressure clean air inlet pipeline, and the oxyhydrogen gas inlet switching valve is fixedly arranged inside one end of the oxyhydrogen gas inlet pipeline.
Preferably, oxyhydrogen gas inlet line's inside from last to down in proper order fixed mounting have hydrogen concentration sensor, oxygen concentration sensor and entry pressure sensor, and oxyhydrogen gas inlet line's bottom intercommunication has pressure vessel, fixed mounting has electronic pulse point firearm on the pressure vessel, the inside fixed mounting that oxyhydrogen gas inlet line is close to pressure vessel one end has pressure vessel entry isolating valve.
Preferably, the bottom of the pressure container is communicated with the top of the DPF through a DPF air inlet sealing interface, and the bottom of the DPF is communicated with the top of the airtight membrane through a DPF air outlet sealing interface.
Preferably, an outlet pressure sensor is fixedly installed between the bottom of the DPF and the top of the airtight membrane.
(III) advantageous effects
The invention provides a DPF high-efficiency detonation cleaning regeneration method, a control system and a device. Compared with the prior art, the method has the following beneficial effects: the DPF efficient detonation cleaning regeneration method, the control system and the device specifically comprise the following steps: s1, firstly, assembling and wiring the regeneration device and the control system, then pressing a start/stop button, turning the input port level of the singlechip start/stop, S2, opening the switching valve of the high-pressure clean air inlet, closing the switching valve of the oxyhydrogen gas inlet, leading the high-pressure clean air to enter the pressure container and the DPF through the high-pressure clean air inlet, discharging the high-pressure clean air after passing through the DPF, S3, closing the switching valve of the high-pressure clean air inlet, opening the switching valve of the oxyhydrogen gas inlet, leading the oxyhydrogen gas to enter the pressure container and the DPF through the oxyhydrogen gas inlet, sealing the DPF outlet with an airtight film, S4, when the concentration values of the oxyhydrogen gas in the pressure container and the DPF are in a safe and effective range, outputting a signal of the switching value of the singlechip board electronic pulse igniter through a peripheral isolation relay to drive the electronic pulse igniter to act, sending an ignition, s5, delaying for 3-5 seconds, outputting a signal of a switching value of a high-pressure clean air inlet switching valve by a singlechip board, driving the high-pressure clean air inlet switching valve to act through a peripheral isolation amplifying relay, opening the high-pressure clean air inlet switching valve, closing the oxyhydrogen inlet switching valve, S6, calculating and analyzing through a singlechip board processing unit, judging the cleaning effect, finding that particulate matters in the DPF are obviously reduced after deflagration cleaning, obviously dredging the DPF, repeating the steps S1 to S2 for a plurality of cycles as required for cleaning, realizing that the oxyhydrogen mixed gas is generated by a oxyhydrogen generator to a pressure container and the DPF, a system CPU monitors the oxyhydrogen concentration in the DPF through an oxyhydrogen concentration sensor, ensuring that the oxyhydrogen concentration in the DPF is controlled in a safe and effective range, igniting to form deflagration in the DPF to burn the particulates into CO2, and simultaneously generating high pressure instantly to discharge impurities in the DPF from an outlet, oxyhydrogen burning generates vapor, can not produce new granule, and electric control system reads real-time data and automatic judgement cleaning performance through the sensor, and the process can circulate many times more as required, finally accomplishes the mediation of blockking up the granule in the DPF, effectively prolongs DPF's life.
Drawings
FIG. 1 is a schematic structural view of a first installation of the present invention;
FIG. 2 is a schematic structural view of a second installation of the present invention;
fig. 3 is a schematic block diagram of the system of the present invention.
In the figure, a 1-oxyhydrogen gas inlet pipeline, a 2-high-pressure clean air inlet pipeline, a 3-high-pressure clean air inlet switching valve, a 4-hydrogen concentration sensor, a 5-oxygen concentration sensor, a 6-electronic pulse igniter, a 7-DPF air inlet sealing interface, an 8-DPF, a 9-oxyhydrogen gas inlet switching valve, a 10-inlet pressure sensor, an 11-pressure container inlet isolating valve, a 12-pressure container, a 13-DPF air outlet sealing interface, a 14-outlet pressure sensor and a 15-airtight membrane.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, an embodiment of the present invention provides a technical solution: a DPF high-efficiency detonation cleaning and regenerating method specifically comprises the following steps:
s1, firstly, assembling and wiring the regeneration device and the control system, then pressing a start/stop button, turning the input port level of the singlechip, and driving the high-pressure clean air inlet switching valve 3 to act through a peripheral isolation amplifying relay by the switching value output signal of the high-pressure clean air inlet switching valve 3 on the singlechip board;
s2, the high-pressure clean air inlet switching valve 3 is opened, meanwhile, the oxyhydrogen gas inlet switching valve 9 is closed, high-pressure clean air enters the pressure container 12 and the DPF8 through the high-pressure clean air inlet and is discharged after passing through the DPF8, after the pressure is stable, the pressure of the pressure sensor before and after the DPF8 is collected by the single chip board through an analog input signal of the inlet pressure sensor 10 and an analog input signal of the outlet pressure sensor 14, and pressure data are stored in a system data area;
s3, after the operation is finished, the high-pressure clean air inlet switching valve 3 is closed, the oxyhydrogen inlet switching valve 9 is opened, oxyhydrogen enters the pressure container 12 and the DPF8 through the oxyhydrogen inlet, at the moment, the outlet of the DPF8 is sealed by the airtight film 15, and the singlechip board acquires oxyhydrogen concentration data in the pressure container 12 and the DPF8 through a hydrogen concentration sensor 4 analog input signal and an oxygen concentration sensor 5 analog input signal;
s4, when the concentration values of oxyhydrogen in the pressure container 12 and the DPF8 are in a safe and effective range, the single chip board 'electronic pulse igniter 6' output signal drives the electronic pulse igniter to act through a peripheral isolation amplifying relay, an ignition signal is sent to the pulse igniter to act to ignite the oxyhydrogen, deflagration is formed in the pressure container 12 and the DPF8, particles are burnt into CO2 and water vapor, and simultaneously high temperature and high pressure are instantaneously generated to discharge the residual impurities in the DPF from the DPF outlet;
s5, delaying for 3-5 seconds, driving the high-pressure clean air inlet switching valve 3 to act by a switching value output signal of a high-pressure clean air inlet switching valve 3 of the single-chip board through a peripheral isolation amplifying relay, opening the high-pressure clean air inlet switching valve 3, closing the oxyhydrogen inlet switching valve 9, enabling high-pressure clean air to enter a pressure container 12 and a DPF8 through a high-pressure clean air inlet, discharging the high-pressure clean air after the high-pressure clean air passes through a DPF8, after the pressure is stabilized, acquiring the pressure of a pressure sensor before and after the DPF8 through an analog input signal of an inlet pressure sensor 10 and an analog input signal of an outlet pressure sensor 14 by the single-chip board, and storing pressure data into a system data;
s6, judging the cleaning effect after calculation and analysis by the single chip board processing unit, finding that particulate matters in the DPF are obviously reduced after deflagration cleaning, having obvious dredging effect, and cleaning by repeating a plurality of cycles from S1 to S2 according to needs.
In the present invention, the deflagration gas is oxyhydrogen gas in steps S1 to S6, and any other combustible gas is included.
The invention discloses a DPF high-efficiency detonation cleaning regeneration control system which comprises a single chip microcomputer, a self-reset button, a hydrogen concentration sensor, an oxygen concentration sensor, pressure sensors, an audible and visual alarm, a power supply, a display monitoring touch screen and peripheral electrical elements, wherein the single chip microcomputer is STM32F103RET6 in model, and two pressure sensor detection analog input signal interfaces, a hydrogen analog input signal interface, an oxygen concentration analog input signal interface, a regeneration device starting/stopping switching value input signal interface, an isolation valve output switching value interface, a switching valve output switching value interface, a pulse igniter output switching value interface and an audible and visual alarm output switching value interface are respectively arranged on the single chip microcomputer.
In the invention, the output interface of the singlechip is respectively isolated and amplified with the isolation valve, the switching valve and the pulse igniter through four peripheral relays, the display monitoring touch screen is communicated with the singlechip by adopting a serial port, the power supply is a 24VDC power supply provided by a 220 VAC-to-24 VDC switching power supply, peripheral input signals are transmitted to the MCU through the input interface of the singlechip, the MCU outputs signals to the output interface according to internal programs, the pulse igniter, the switching valve and the isolating valve are controlled to act by isolating and amplifying through a peripheral relay, meanwhile, the final cleaning treatment result is judged by comparing calculation analysis with preset parameters, relevant data and processing results are displayed on the touch screen, so that the automatic operation of the DPF high-efficiency detonation cleaning and regenerating device and the real-time processing and displaying of the data are realized, when the cleaning machine is in a working state, the cleaning machine is started by pressing down once and stopped by pressing down twice, and the electric control system reads real-time data through the sensor and automatically judges the cleaning effect.
The invention also discloses a DPF high-efficiency deflagration cleaning and regenerating device, which comprises a hydrogen-oxygen gas inlet pipeline 1, a high-pressure clean air inlet pipeline 2, a DPF8 and an airtight membrane 15, wherein a high-pressure clean air inlet switching valve 3 is fixedly arranged in the high-pressure clean air inlet pipeline 2, a hydrogen-oxygen gas inlet switching valve 9 is fixedly arranged in the hydrogen-oxygen gas inlet pipeline 1, hydrogen-oxygen gas mixture is supplied to a pressure container 12 and the DPF8 by the hydrogen-oxygen gas inlet pipeline 1, high-pressure clean air is supplied to the DPF8 by the high-pressure clean air inlet pipeline 2, the DPF inlet-outlet pressure difference before and after the DPF8 treatment can be detected to judge the DPF8 treatment effect, the high-pressure clean air inlet switching valve 3 is opened when the effects before and after the DPF8 treatment are compared, a detection gas source is provided for the DPF8 detection, meanwhile, residual attachments in the DPF8 are completely discharged out of the DPF8 by the high-pressure air, the DPF8 is an, provide deflagration combustible gas for cleaning the pressure vessel 12 and DPF 8.
In the invention, a hydrogen concentration sensor 4, an oxygen concentration sensor 5 and an inlet pressure sensor 10 are fixedly arranged in a hydrogen and oxygen inlet pipeline 1 from top to bottom in sequence, the hydrogen concentration sensor 4 and the oxygen concentration sensor 5 detect the concentrations of hydrogen and oxygen in a pressure container 12 and a DPF8 to ensure that the concentrations of the hydrogen and the oxygen in the pressure container 12 and the DPF8 are controlled in a safe and effective range, a flash fire is formed in the pressure container 12 and the DPF8 to burn particles into CO2 and water vapor, simultaneously high temperature and high pressure are generated instantly to discharge residual impurities in the DPF from a DPF outlet, the inlet pressure sensor 10 detects the high-pressure air pressure at the inlet of the DPF8, a real-time pressure analog signal is sent to a control unit, the pressure analog signal is processed by the control unit and then sent to a display unit to display the current pressure, the cleaning effect is judged by combining with the DPF outlet pressure sensor 14, and the bottom end of, an electronic pulse igniter 6 is fixedly installed on a pressure container 12, the electronic pulse igniter 6 reaches ignition concentration when oxyhydrogen concentration reaches, an inlet isolation electromagnetic valve of the pressure container 12 is closed, a control system sends an ignition signal to the pulse igniter to ignite oxyhydrogen to generate deflagration, a pressure container inlet isolation valve 11 is fixedly installed inside one end, close to the pressure container 12, of an oxyhydrogen inlet pipeline 1, the pressure container inlet isolation valve 11 is closed before the oxyhydrogen in the pressure container inlet isolation valve 11 and a DPF8 meet a safe effective range and ignite, so that a front end sensor of the pressure container 12 is isolated when the oxyhydrogen ignites and deflagration to prevent the front end sensor of the pressure container 12 from being damaged when the oxyhydrogen deflagration, the pressure container 12 stores a certain volume of oxyhydrogen mixed gas, high-pressure high-temperature gas generated by ignition and deflagration of the electronic pulse igniter 6 instantly disperses blocking particles in a DPF8 and pushes out of the DPF8 when the, reach high efficiency mediation and resume the purpose of DPF8 function, airtight membrane 15 equipment sealed export when detonating input oxyhydrogen gas ensures that the oxyhydrogen gas mixture can not reveal, opens completely at ignition moment atress, guarantees to block up the granule in the DPF8 and guarantees that oxyhydrogen gas ignites and takes place the detonation, with DPF8 interior granule fully burn and follow the quick air current of high pressure and export the discharge from DPF8, airtight membrane 15 can dismantle the change.
In the invention, the bottom of the pressure container 12 is communicated with the top of the DPF8 through the DPF air inlet sealing interface 7, the DPF air inlet sealing interface 7 ensures that the leakage cannot occur when oxyhydrogen gas is input into the DPF8 or when high-pressure clean air is input, so as to avoid danger or influence on the detection effect, the bottom of the DPF8 is communicated with the top of the airtight film 15 through the DPF air outlet sealing interface 13, and the DPF air outlet sealing interface 13 ensures that the leakage cannot occur when the oxyhydrogen gas is input into the pressure container 12 and the DPF8 or when the high-pressure clean air is input, so as to avoid danger or influence on the detection effect.
In the invention, an outlet pressure sensor 14 is fixedly arranged between the bottom of the DPF8 and the top of the airtight membrane 15, the DPF outlet pressure sensor 14 detects the pressure of the high-pressure air at the outlet of the DPF8, and sends a pressure analog signal to a control unit in real time, the pressure analog signal is sent to a display unit to display the current pressure after being processed by the control unit, and the cleaning effect is judged by combining the DP inlet pressure sensor 10.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A DPF high-efficiency detonation cleaning regeneration method is characterized in that: the method specifically comprises the following steps:
s1, firstly, the regeneration device and the control system are assembled and wired, then a start/stop button is pressed, the level of a start/stop input port of the single chip microcomputer is turned over, and a switching value output signal of a high-pressure clean air inlet switching valve (3) on a single chip microcomputer board drives the high-pressure clean air inlet switching valve (3) to act through a peripheral isolation amplifying relay;
s2, the high-pressure clean air inlet switching valve (3) is opened, meanwhile, the oxyhydrogen inlet switching valve (9) is closed, high-pressure clean air enters the pressure container (12) and the DPF (8) through the high-pressure clean air inlet and is discharged after passing through the DPF (8), after the pressure is stable, the pressure of the front pressure sensor and the rear pressure sensor of the DPF (8) is collected by the singlechip board through an inlet pressure sensor (10) analog input signal and an outlet pressure sensor (14) analog input signal, and pressure data are stored in a system data area;
s3, after the operation is finished, the high-pressure clean air inlet switching valve (3) is closed, the oxyhydrogen inlet switching valve (9) is opened, oxyhydrogen enters the pressure container (12) and the DPF (8) through the oxyhydrogen inlet, the outlet of the DPF (8) is sealed by an airtight film (15), and the singlechip board acquires oxyhydrogen concentration data in the pressure container (12) and the DPF (8) through a hydrogen concentration sensor (4) analog input signal and an oxygen concentration sensor (5) analog input signal;
s4, when the concentration values of oxyhydrogen in the pressure container (12) and the DPF (8) are in a safe and effective range, the on-off output signal of the singlechip board 'electronic pulse igniter (6)' drives the electronic pulse igniter to act through a peripheral isolation amplifying relay, sends an ignition signal to the pulse igniter to act to ignite the oxyhydrogen, forms deflagration in the pressure container (12) and the DPF (8) to combust particles into CO2 and water vapor, and simultaneously generates high temperature and high pressure instantly to discharge residual impurities in the DPF from an outlet of the DPF;
s5, delaying for 3-5 seconds, driving the high-pressure clean air inlet switching valve (3) to act by a switching value output signal of a high-pressure clean air inlet switching valve (3) of the single-chip board through a peripheral isolation amplifying relay, opening the high-pressure clean air inlet switching valve (3), closing the oxyhydrogen inlet switching valve (9), enabling high-pressure clean air to enter a pressure container (12) and a DPF (8) through a high-pressure clean air inlet, discharging the high-pressure clean air after the high-pressure clean air passes through the DPF (8), after the pressure is stabilized, acquiring the pressure of a pressure sensor in front of and behind the DPF (8) through an analog input signal of an inlet pressure sensor (10) and an analog input signal of an outlet pressure sensor (14) by the single-chip board, and storing pressure data into;
s6, judging the cleaning effect after calculation and analysis by the single chip board processing unit, finding that particulate matters in the DPF are obviously reduced after deflagration cleaning, having obvious dredging effect, and cleaning by repeating a plurality of cycles from S1 to S2 according to needs.
2. The method for efficiently cleaning and regenerating the DPF as recited in claim 1, wherein: the deflagration gas is oxyhydrogen gas in the steps S1 to S6, and any other combustible gas is included.
3. A control system for performing a DPF efficient deflagration cleaning regeneration method according to claim 1, characterized in that: the single-chip microcomputer MCU is STM32F103RET6 in model, and two pressure sensor detection analog input signal interfaces, a hydrogen analog input signal interface, an oxygen concentration analog input signal interface, a regeneration device start/stop switching value input signal interface, an isolation valve output switching value interface, a switching valve output switching value interface, a pulse igniter output switching value interface and an audible and visual alarm output switching value interface are respectively installed on the single-chip microcomputer.
4. The control system of claim 3, wherein: the output interface of the single chip microcomputer is isolated and amplified with the isolation valve, the switching valve and the pulse igniter through four peripheral relays respectively, the display monitoring touch screen is in serial port communication with the single chip microcomputer, and the power supply is a 24VDC power supply provided by a 220 VAC-to-24 VDC switching power supply.
5. The device for implementing the DPF high-efficiency detonation cleaning and regenerating method according to claim 1 is characterized in that: including oxyhydrogen gas inlet pipeline (1), high-pressure clean air inlet pipeline (2), DPF (8) and airtight membrane (15), the inside fixed mounting of high-pressure clean air inlet pipeline (2) has high-pressure clean air inlet diverter valve (3), and the inside fixed mounting of oxyhydrogen gas inlet pipeline (1) one end has oxyhydrogen gas inlet diverter valve (9).
6. The apparatus of claim 5, wherein: oxyhydrogen gas inlet pipeline (1) inside from last to down in proper order fixed mounting have hydrogen concentration sensor (4), oxygen concentration sensor (5) and entry pressure sensor (10), and the bottom intercommunication of oxyhydrogen gas inlet pipeline (1) has pressure vessel (12), fixed mounting has electronic pulse point firearm (6) on pressure vessel (12), inside fixed mounting that oxyhydrogen gas inlet pipeline (1) is close to pressure vessel (12) one end has pressure vessel entry isolation valve (11).
7. The apparatus of claim 5, wherein: the bottom of the pressure container (12) is communicated with the top of the DPF (8) through a DPF air inlet sealing interface (7), and the bottom of the DPF (8) is communicated with the top of the airtight membrane (15) through a DPF air outlet sealing interface (13).
8. The apparatus of claim 5, wherein: an outlet pressure sensor (14) is fixedly arranged between the bottom of the DPF (8) and the top of the airtight membrane (15).
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| CN102635429A (en) * | 2012-04-26 | 2012-08-15 | 北京工业大学 | Device and method for carrying out closed-loop control on discharge of internal combustion engine by using hydrogen and oxygen |
| CN106014632A (en) * | 2016-07-22 | 2016-10-12 | 长沙卡特尔环保科技有限公司 | Novel vehicle engine hydrogen-oxygen carbon remover control system and control method |
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| CN102635429A (en) * | 2012-04-26 | 2012-08-15 | 北京工业大学 | Device and method for carrying out closed-loop control on discharge of internal combustion engine by using hydrogen and oxygen |
| CN106014632A (en) * | 2016-07-22 | 2016-10-12 | 长沙卡特尔环保科技有限公司 | Novel vehicle engine hydrogen-oxygen carbon remover control system and control method |
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