CN105642441A - Exhaust particulate matter charging and charging capacity measuring device of diesel engine - Google Patents
Exhaust particulate matter charging and charging capacity measuring device of diesel engine Download PDFInfo
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- CN105642441A CN105642441A CN201610173985.7A CN201610173985A CN105642441A CN 105642441 A CN105642441 A CN 105642441A CN 201610173985 A CN201610173985 A CN 201610173985A CN 105642441 A CN105642441 A CN 105642441A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/017—Combinations of electrostatic separation with other processes, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/01—Pretreatment of the gases prior to electrostatic precipitation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/01—Pretreatment of the gases prior to electrostatic precipitation
- B03C3/014—Addition of water; Heat exchange, e.g. by condensation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/02—Plant or installations having external electricity supply
- B03C3/04—Plant or installations having external electricity supply dry type
- B03C3/06—Plant or installations having external electricity supply dry type characterised by presence of stationary tube electrodes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/24—Details of magnetic or electrostatic separation for measuring or calculating parameters, efficiency, etc.
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/30—Details of magnetic or electrostatic separation for use in or with vehicles
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- Physical Or Chemical Processes And Apparatus (AREA)
- Exhaust Gas After Treatment (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses an exhaust particulate matter charging and charging capacity measuring device of a diesel engine. The exhaust particulate matter charging and charging capacity measuring device comprises a water removal device, a charging reactor and a Faraday cylinder of an improved structure. The water removal device comprises a cooling system and a heating system. The charging reactor comprises a bobbin type corona generator and a positive/negative high voltage power source. The Faraday cylinder of the improved structure comprises a PVC pipe, a first metal net, a second metal net, a rubber pipe, a filter paper bracket, a quick connector, a stainless steel inner barrel, a stainless steel outer barrel and a flow control system. Water in exhaust of the diesel engine is reduced through the cooling system, the exhaust is made to be constant at certain temperature through the heating system, the heated exhaust is then introduced into the charging reactor to react, and therefore particulate matter is charged. On-line measurement is adopted in the whole charging capacity measurement process, the charging capacity of the particulate matter is measured through the Faraday cylinder of the improved structure, and the charged particulate matter is captured through filter paper. By means of the positive/negative high voltage corona discharge technology, real-time capturing of the particulate matter of the diesel engine and measurement of the charging capacity are achieved.
Description
Technical field
The present invention relates to engine exhaust post-processing technology field, specifically, be a kind of be applicable to that diesel engine particulate thing is charged and carrying capacity measurement apparatus.
Background technology
The air pollution that Inhaled Particulate Matters Emission brings, it has also become one of environmental problem that this century is the most serious. The particle diameter of pellet is more little, and granule suspension time in an atmosphere and fed distance are more remote, and the harm that people is healthy is more big. Current research shows that the particle diameter granule less than 100nm can penetrate human body cell wall easily, enters blood and brain, even can cause some hereditary. The exhaust contaminant of motor vehicles in current city, especially the micro/nano level particulate matter of diesel emission is one of main source of Inhalable Particles of Atmosphere, control diesel engine particulate thing, caused the attention of many countries and international organization, become current study hotspot.
Development along with Exhaust Control for Diesel Engine technology, especially the application of post-processing technology, diesel particulate discharge gross mass is greatly reduced, but micro-nano granules is discharged the control effect of number and inconspicuous, and in up-to-date granular material discharged standard, particulate count purpose controls to have become one of main task. Therefore particulate matter adopts charged coagulating technique promote micro-nano granules thing particle size growth, reduce particulate matter number, is not only significant in diesel exhaust aftertreatment, also will play a significant role at micro-nano granules thing control field simultaneously. Therefore, take measures on customs clearance that diesel engine particulate is carried out charged coalescence is necessary.
Charged coalescence (ElectricalAgglomeration, EA) technology with efficiently, safety, non-secondary pollution and the advantage such as applied widely, become the study hotspot that diesel engines at present exhaust gas purification field is new. Elements of the electric charge in the crystal exterior is exactly that charged particle shock diesel engine particulate thing makes it charged in simple terms. Sparking electrode cathodic electricity corona under the effect of negative high voltage DC voltage produces electronics, townsend theory know, these electronics travel motion under electric field action is better than itself random warm-up movement.Adopt negative pressure corona discharge and when electric field intensity is sufficiently strong, anode (earthing pole) and negative electrode (corona discharge pole) can produce bigger electric potential difference, and these electronics can make gas particle collide ionization in the process moved to earthing pole. Newly generated charged particle under electric field action to anode movement time gas particle also can be made to collide ionization, get more and more to the electronics of anode movement. These charged particles in motor process and diesel engine particulate thing collides and between particulate matter mutual warm-up movement collision, make particulate matter charged.
Summary of the invention
The present invention utilizes high-voltage corona discharge technology, the problem that instant solution diesel engine particulate thing is charged. Propose a kind of charge device suitable in diesel engine particulate thing and measure the Faraday cup of carrying capacity. Realize technical scheme as follows:
A kind of diesel engine particulate thing is charged and carrying capacity measurement apparatus, including pressurizer tank, water trap and charged reaction unit, the air inlet of described pressurizer tank is connected with diesel engine, the gas outlet of pressurizer tank is connected with described water trap one end, the described water trap other end is connected with described charged reaction unit;
Described water trap includes chiller and heater; Described chiller includes corrugated stainless steel tubing, centrifugal blower, and the air outlet of described centrifugal blower is directed at described corrugated stainless steel tubing; Described heater includes rustless steel cylinder, earthenware heater, and described rustless steel cylinder is arranged on described earthenware heater body; Described corrugated stainless steel tubing one end connects described pressurizer tank, the other end connects described earthenware heater;
Described charged reaction unit includes spool formula corona unit, high voltage power supply; Described spool formula corona unit includes stainless steel tube, interior electrode, heat-preservation cotton; One end of described stainless steel tube is connected with described earthenware heater air outlet, and the tube wall at described stainless steel tube two ends is respectively equipped with hole, and described interior electrode is positioned at inside rustless steel and the two ends of electrode pass from described hole respectively; Described heat-preservation cotton wraps in described stainless steel tube outer surface; The body ground connection of described stainless steel tube;
Described high voltage power supply connects one end of described interior electrode, the other end insulation suspension of described interior electrode.
It is preferred that scheme, also include carrying capacity measurement apparatus and volume control device; Described carrying capacity measurement apparatus includes digital charge meter and Faraday cup, and the air inlet of described Faraday cup is connected with described charged reaction unit, and digital charge meter is connected with Faraday cup;
Described volume control device includes sampling pump and spinner flowmeter; Described spinner flowmeter is connected with the gas outlet of described Faraday cup, and described sampling pump is connected with described spinner flowmeter.
It is preferred that scheme, described Faraday cup includes pvc pipe, rustless steel urceolus, rustless steel inner core; One end of described rustless steel urceolus is connected by rubber tube with described pvc pipe, the other end jointing clip formula snap joint of described rustless steel urceolus, and described pvc pipe is as the inlet port of Faraday cup, and described snap joint is as the outlet port of Faraday cup; Described rustless steel outer barrel is respectively arranged at two ends with the first wire netting and the second wire netting, described first wire netting, the described second equal ground connection of wire netting; Described rustless steel inner core is embedded in described rustless steel outer barrel, has layer of silica gel between described rustless steel inner core and described rustless steel urceolus, and described rustless steel inner core is connected with described digital charge meter by shielding line;Being provided with filter paper bracket inside one end that described rustless steel inner core is corresponding with described snap joint, described filter paper bracket can fix filter paper.
It is preferred that scheme, it is 1m that described volume control device controls extraction flow3/ min��8m3/min��
It is preferred that scheme, described heater also includes temperature controller, thermocouple sensor and relay; Described thermocouple sensor, described relay are all connected with described temperature controller, and described relay is also connected with described earthenware heater;
Described thermocouple sensor is arranged on the two ends of described earthenware heater, is respectively used to intake air temperature and the air outlet temperature of detection earthenware heater; Described temperature controller controls the break-make of relay to control delivery temperature according to the detected value of thermocouple sensor.
It is preferred that scheme, described corrugated stainless steel tubing centre position is provided with ball valve, and the described corrugated stainless steel tubing other end is set to S type, and described S type bottom is provided with valve.
It is preferred that scheme, described spool formula corona unit also includes earthenware, sealing ring and insulator support; Described hole is close to by described sealing ring; Described earthenware is enclosed within the two ends of described interior electrode and is close on described sealing ring; Described insulator support is arranged on the two ends of described stainless steel tube to support stainless steel tube.
It is preferred that scheme, the gap between described interior electrode and described stainless steel inside pipe wall is 20��25mm, and the thickness of described heat-preservation cotton is 10��15mm.
It is preferred that scheme, also include vehicle-mounted ECU; Described vehicle-mounted ECU utilizes sensor to obtain diesel engine duty on the one hand, and described duty includes diesel engine speed and accelerator open degree, and described vehicle-mounted ECU selects best charged voltage according to duty on the other hand and sends instructions to positive/negative high voltage power supply.
It is preferred that scheme, described high voltage power supply includes positive high voltage power supply and negative high voltage power source, and the discharge voltage of described high voltage power supply is 0��20kV, and the heating-up temperature of described earthenware heater is 100��500 DEG C.
Beneficial effects of the present invention:
1. the present invention utilizes charged technology, based on positive/negative high-voltage corona discharge, increases particulate matter carrying capacity more efficiently, rapidly, increases particle size, reduce particulate matter quantity, improve DPF arresting efficiency.
2. the present invention can investigate corona discharge parameter factors such as () discharge voltage, multiple exhaust flow, the region of discharge internal temperatures impact on granule charge-mass ratio, optimizes discharge parameter.
3. the present invention can probe into the discharging structure parameter (factor such as electrode diameter, electrode material, electrode distance) impact on granule charge-mass ratio, optimum structural parameter.
Accompanying drawing explanation
Fig. 1 is that diesel engine particulate thing that the present invention proposes is charged and carrying capacity measurement apparatus schematic diagram.
Fig. 2 is the charged reactor assembly schematic diagram for realizing the present invention.
The profile of the Faraday cup being applicable to diesel engine of Fig. 3 present invention.
The structural representation of the Faraday cup being applicable to diesel engine of Fig. 4 present invention.
Figure is labeled as:
1-diesel engine, 2-pressurizer tank, 3-centrifugal blower, 4-corrugated stainless steel tubing, 5-thermocouple sensor, 6-earthenware heater, 7-rustless steel cylinder, 8-valve, 9-spool formula corona unit, 10-Faraday cup, 11-spinner flowmeter, 12-sampling pump, 13-digital charge meter, the positive/negative high voltage power supply of 14-, 15-temperature controller, 16-relay, 17-ECU, 18-ball valve, 901-insulator support, electrode in 902-, 903-earthenware, 904-sealing ring, 905-heat-preservation cotton, 906-stainless steel tube, 1001-PVC manages, 1002-the first wire netting, 1003-rubber tube, 1004-rustless steel inner core, 1005-layer of silica gel, 1006-rustless steel urceolus, 1007-filter paper bracket, 1008-snap joint, 1009-the second wire netting.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As it is shown in figure 1, the diesel engine particulate thing for present invention proposition is charged and carrying capacity measurement apparatus schematic diagram. Including: pressurizer tank 2, water trap, charged reaction unit, carrying capacity measurement apparatus and volume control device; Pressurizer tank is connected with diesel exhaust gas mouth, for relaxing the exhaust airstream of discharge.
Water trap includes chiller and heater; Described chiller is air cooling system, including corrugated stainless steel tubing 4 and centrifugal blower 3, one end of described corrugated stainless steel tubing 4 connects the gas outlet of pressurizer tank 2, the other end connects heater, centre one place of corrugated stainless steel tubing 4 is provided with ball valve 18, the other end of corrugated stainless steel tubing 4 is set to S shape, and at ogee bottom, one valve 8 is set, described centrifugal blower 3 is placed near corrugated stainless steel tubing 4 and the air outlet of centrifugal blower 3 is directed at the S section of corrugated stainless steel tubing, makes the moisture that the exhaust temperature that diesel engine 1 is discharged declines and reduces in air-flow. Described heater includes earthenware heater 6, is arranged on the rustless steel cylinder 7 of earthenware heater body, thermocouple sensor 5, temperature controller 15 and relay 16; The air inlet of described earthenware heater 6 is connected with the S shape end of corrugated stainless steel tubing, the gas outlet of earthenware heater is connected with charged reaction unit; Described thermocouple sensor 5, described relay 16 are all connected with described temperature controller 15, and described relay 16 is also connected with earthenware heater 6; Described thermocouple sensor 5 is 2, it is individually positioned in the air inlet of earthenware heater and the position of gas outlet, for the temperature after detecting the temperature after diesel engine 1 aerofluxus is cooled by the cooling device and being heated by earthenware heater, temperature controller controls the break-make of relay according to the detected value of thermocouple sensor and then realizes the break-make controlling earthenware heater to control the temperature of aerofluxus; The rustless steel cylinder 7 of earthenware heater body can increase heating surface (area) (HS, makes heats better.
Described charged reaction unit includes spool formula corona unit 9 and positive/negative high voltage power supply 14, as shown in Figure 2; Described spool formula corona unit 9 includes stainless steel tube 906, interior electrode 902, heat-preservation cotton 905, sealing ring 904, earthenware 903 and insulator support 901; One end of described stainless steel tube 906 is connected with the gas outlet of described earthenware heater 6, the tube wall at described stainless steel tube two ends is respectively equipped with hole, sealing ring 904 it is close to above described hole, described interior electrode 902 inside rustless steel and and stainless steel inside pipe wall between gap be 20��25mm, the two ends of described interior electrode pass from described hole respectively, and the interior electrode part of punched out is cased with earthenware 903; Described heat-preservation cotton 905 wraps in the outer surface of described stainless steel tube 906, and the thickness of described heat-preservation cotton is 10��15mm, and described heat-preservation cotton is used for keeping the temperature of charged reaction; The body ground connection of described stainless steel tube; Described insulator support 901 is positioned at the two ends of stainless steel tube, and stainless steel tube is played a supporting role in protection. Described positive/negative high voltage power supply 14 connects one end of described interior electrode 902, and the other end insulating cement fabric width of described interior electrode gets up and unsettled.
Described carrying capacity measurement apparatus includes digital charge meter 13 and the Faraday cup 10 improved, and Fig. 3 and Fig. 4 is the structure chart of Faraday cup. The air inlet of described Faraday cup 10 is connected with the other end of described stainless steel tube 906, the gas outlet of described Faraday cup is connected with volume control device;The Faraday cup that the present invention improves includes pvc pipe 1001, rustless steel urceolus 1006, rustless steel inner core 1004; One end of described rustless steel urceolus 1006 is connected by rubber tube 1003 with described pvc pipe 1001, described rubber tube 1003 is for realizing sealing and the effect of insulation, the other end of described rustless steel urceolus 1006 connects a clamp type quick connector 1008, described pvc pipe 1001 is as the inlet port of Faraday cup, and described snap joint is as the outlet port of Faraday cup; Described rustless steel outer barrel is respectively arranged at two ends with the first wire netting 1002 and the second wire netting 1009, described first wire netting 1002 and the described second equal ground connection of wire netting 1009 to shield external electrical field interference; Described rustless steel inner core 1004 is embedded in described rustless steel outer barrel, is provided with layer of silica gel 1005 both to be kept apart between described rustless steel inner core and described rustless steel urceolus, and described rustless steel inner core 1004 is connected with described digital charge meter 13 by shielding line; Being provided with filter paper bracket 1007 inside one end that described rustless steel inner core is corresponding with described snap joint, described filter paper bracket 1007 is used for fixing filter paper, and described filter paper is used for trapping the particulate matter entering Faraday cup, can be filled easily by described snap joint and take filter paper.
Described volume control device includes spinner flowmeter 11 and sampling pump 12; Described spinner flowmeter 11 is connected with the outlet port of Faraday cup, and described sampling pump 12 is connected with described spinner flowmeter 11.
The operation principle of apparatus of the present invention is as follows:
1, the aerofluxus that diesel engine 1 is discharged first passes around pressurizer tank 2 and carries out voltage stabilizing and releive air-flow, enters corrugated stainless steel tubing 4 afterwards, sequentially pass through ball valve 18 tap, centrifugal blower 3 cooling de-watering, the exhaust temperature after cooling is 80-100 DEG C; Become liquid after steam cooling in tail gas, valve 8 can be opened as required and release moisture; It should be noted that the aperture keeping ball valve 18 is constant, to reduce ensuing test and the workload of later test.
2, aerofluxus after cooling enters heater, by the temperature of tail gas after being positioned at the thermocouple sensor 5 at earthenware heater 6 air inlet place and measuring cooling in real time, by be positioned at the thermocouple sensor 5 at earthenware heater 6 gas outlet place measure in real time heat after to enter the delivery temperature within charged reaction unit; Realize controlling the duty of earthenware heater 6 by the closed loop system of two temperature sensors, temperature controller 15 and relay 16 composition, delivery temperature is controlled at 100��500 DEG C, it is preferably 300 DEG C, the temperature influence degree to charged effect can be probed into simultaneously.
3, the aerofluxus after heating is evenly into charged reaction unit, open positive/negative high voltage power supply 14 and provide discharge voltage for charged reaction, realize corona discharge, by in the particulate matter in aerofluxus and air freely electronics mutually collide and form charged particle, described discharge voltage controls at 0��20kV, the region of discharge that interior electrode is charged reaction unit of spool formula corona unit 9; Putting into filter paper on filter paper bracket in the Faraday cup improving structure, the particulate matter in Faraday cup is adsorbed on filter paper, is collected by filter paper; Open volume control device, utilize sampling pump 12 and spinner flowmeter 11 to control extraction flow at 1m3/ min��8m3/ min, changes the flow of pipeline particular by the pointer regulating spinner flowmeter 11; Open digital charge meter 13, enter the carrying capacity of particulate matter in Faraday cup with real-time measurement.
Said process is controlled by vehicle-mounted ECU 17, after the signal of diesel engine speed and accelerator open degree sends ECU17 to by sensor, ECU17 selects best charged voltage and sends instructions to positive/negative high voltage power supply 14, making particulate matter more efficient, energy-conservationly charged.
The work process of apparatus of the present invention is:
Opening sampling pump 12, diesel engine 1 aerofluxus is further separated into corrugated stainless steel tubing 4 through ball valve 18, and blower fan 3 is by air-cooled minimizing moisture by centrifugation; Utilize temperature controller 15, relay 16 and earthenware heater 6 to rustless steel cylinder heating, utilize thermocouple sensor 5 to measure the temperature before heating exhaust gas and after heating respectively, constant and probe into the temperature influence degree to charged effect to realize delivery temperature; Connecting the discharge circuit of positive/negative high voltage power supply, positive/negative high voltage power supply 14 provides discharge voltage 0��20kV; The charged particle thing produced in charged reaction unit enters in the Faraday cup 10 improving structure; Charged particle thing in Faraday cup is adsorbed on filter paper, is collected by filter paper; Change the pointer of spinner flowmeter 11, control the flow in pipeline; Utilizing digital charge meter 13 to monitor the carrying capacity of particulate matter in Faraday cup in real time, when the carrying capacity increasing degree of digital charge meter 13 is basically unchanged, Faraday cup 10 reaches capacity carrying capacity, and the particulate matter carrying capacity in during this period of time is measured.
The above is only the preferred embodiment of the invention; the protection domain being not intended to limit the present invention; should be appreciated that under the premise without prejudice to flesh and blood of the present invention and spirit, those skilled in the art are changed, improve or equivalent replacement etc. falls within protection scope of the present invention.
Claims (10)
1. a diesel engine particulate thing is charged and carrying capacity measurement apparatus, it is characterized in that, including pressurizer tank (2), water trap and charged reaction unit, the air inlet of described pressurizer tank (2) is connected with diesel engine (1), the gas outlet of pressurizer tank (2) is connected with described water trap one end, the described water trap other end is connected with described charged reaction unit;
Described water trap includes chiller and heater; Described chiller includes corrugated stainless steel tubing (4), centrifugal blower (3), and the air outlet of described centrifugal blower (3) is directed at described corrugated stainless steel tubing (4); Described heater includes rustless steel cylinder (7), earthenware heater (6), and it is internal that described rustless steel cylinder (7) is arranged on described earthenware heater (6); Described corrugated stainless steel tubing (4) one end connects described pressurizer tank (2), the other end connects described earthenware heater (6);
Described charged reaction unit includes spool formula corona unit (9), high voltage power supply; Described spool formula corona unit (9) includes stainless steel tube (906), interior electrode (902), heat-preservation cotton (905); One end of described stainless steel tube (906) is connected with described earthenware heater (6) gas outlet, being respectively equipped with hole on the tube wall at described stainless steel tube (906) two ends, described interior electrode (902) is positioned at inside rustless steel and the two ends of electrode pass from described hole respectively; Described heat-preservation cotton (905) wraps in described stainless steel tube outer surface; The body ground connection of described stainless steel tube (906);
Described high voltage power supply connects one end of described interior electrode (902), the other end insulation suspension of described interior electrode (902).
2. a kind of diesel engine particulate thing according to claim 1 is charged and carrying capacity measurement apparatus, it is characterised in that also include carrying capacity measurement apparatus and volume control device; Described carrying capacity measurement apparatus includes digital charge meter (13) and Faraday cup (10), the air inlet of described Faraday cup (10) is connected with described charged reaction unit, and digital charge meter (13) is connected with Faraday cup (10);
Described volume control device includes sampling pump (12) and spinner flowmeter (11); Described spinner flowmeter (11) is connected with the gas outlet of described Faraday cup (10), and described sampling pump (12) is connected with described spinner flowmeter (11).
3. a kind of diesel engine particulate thing according to claim 2 is charged and carrying capacity measurement apparatus, it is characterized in that, described Faraday cup includes pvc pipe (1001), rustless steel urceolus (1006), rustless steel inner core (1004); One end of described rustless steel urceolus (1006) is connected by rubber tube (1003) with described pvc pipe (1001), other end jointing clip formula snap joint (1008) of described rustless steel urceolus (1006), described pvc pipe (1001) is as the inlet port of Faraday cup (10), and described snap joint (1008) is as the outlet port of Faraday cup (10); Internal the first wire netting (1002) and the second wire netting (1009) of being respectively arranged at two ends with of described rustless steel urceolus (1006), described first wire netting (1002), described second wire netting (1009) all ground connection; It is internal that described rustless steel inner core (1004) is embedded in described rustless steel urceolus (1006), having layer of silica gel (1005) between described rustless steel inner core (1004) and described rustless steel urceolus (1006), described rustless steel inner core (1004) is connected with described digital charge meter (13) by shielding line; Being provided with filter paper bracket (1007) inside one end that described rustless steel inner core (1004) is corresponding with described snap joint (1008), described filter paper bracket (1007) can fix filter paper.
4. a kind of diesel engine particulate thing according to claim 2 is charged and carrying capacity measurement apparatus, it is characterised in that it is 1m that described volume control device controls extraction flow3/ min��8m3/min��
5. a kind of diesel engine particulate thing according to claim 1 is charged and carrying capacity measurement apparatus, it is characterised in that described heater also includes temperature controller (15), thermocouple sensor (5) and relay (16); Described thermocouple sensor (5), described relay (16) are all connected with described temperature controller (15), and described relay (16) is also connected with described earthenware heater (6);
Described thermocouple sensor (5) is arranged on the two ends of described earthenware heater, is respectively used to intake air temperature and the air outlet temperature of detection earthenware heater (6); Described temperature controller (15) controls the break-make of relay to control delivery temperature according to the detected value of thermocouple sensor.
6. a kind of diesel engine particulate thing according to claim 1 is charged and carrying capacity measurement apparatus, it is characterized in that, described corrugated stainless steel tubing (4) centre position is provided with ball valve (18), described corrugated stainless steel tubing (4) other end is set to S type, and described S type bottom is provided with valve (8).
7. a kind of diesel engine particulate thing according to claim 1 is charged and carrying capacity measurement apparatus, it is characterized in that, described spool formula corona unit also includes earthenware (903), sealing ring (904) and insulator support (901); Described hole is close to by described sealing ring (904); Described earthenware (903) is enclosed within the two ends of described interior electrode (902) and is close on described sealing ring (904); Described insulator support (901) is arranged on the two ends of described stainless steel tube (906) to support stainless steel tube (906).
8. a kind of diesel engine particulate thing according to claim 1 or 7 is charged and carrying capacity measurement apparatus, it is characterized in that, gap between described interior electrode (902) and described stainless steel tube (906) inwall is 20��25mm, and the thickness of described heat-preservation cotton (905) is 10��15mm.
9. a kind of diesel engine particulate thing according to claim 1 is charged and carrying capacity measurement apparatus, it is characterised in that also include vehicle-mounted ECU (17); Described vehicle-mounted ECU (17) utilizes sensor to obtain diesel engine duty on the one hand, described duty includes diesel engine speed and accelerator open degree, and described vehicle-mounted ECU (17) selects best charged voltage according to duty on the other hand and sends instructions to high voltage power supply.
10. a kind of diesel engine particulate thing according to claim 1 is charged and carrying capacity measurement apparatus, it is characterized in that, described high voltage power supply includes positive high voltage power supply and negative high voltage power source, the discharge voltage of described high voltage power supply is 0��20kV, and the heating-up temperature of described earthenware (903) heater is 100��500 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610173985.7A CN105642441B (en) | 2016-03-24 | 2016-03-24 | A kind of diesel engine particulate object is charged and charged measuring device |
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| CN110261286A (en) * | 2019-05-22 | 2019-09-20 | 江苏大学 | A kind of device and method measuring the single exhaust particulate carried charge of diesel engine |
| CN110961253A (en) * | 2018-09-28 | 2020-04-07 | 哈尔滨工业大学 | A line section of thick bamboo formula monopole lotus electric installation for solid-state particulate matter is lotus |
| CN114307438A (en) * | 2022-01-10 | 2022-04-12 | 浙江大学 | Ship tail gas black carbon deep removal system and method based on charge enhanced filtration |
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