CN205047277U - Diesel engine exhaust particle filter equipment - Google Patents
Diesel engine exhaust particle filter equipment Download PDFInfo
- Publication number
- CN205047277U CN205047277U CN201520094588.1U CN201520094588U CN205047277U CN 205047277 U CN205047277 U CN 205047277U CN 201520094588 U CN201520094588 U CN 201520094588U CN 205047277 U CN205047277 U CN 205047277U
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- China
- Prior art keywords
- foamed ceramics
- electrode
- diesel particulate
- particulate filter
- diesel engine
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Abstract
The utility model discloses a diesel engine exhaust particle filter equipment belongs to diesel engine exhaust purification processing technique field. The utility model discloses a low temperature plasma reinforcing that dielectric barrier discharge produced is to the filtration efficiency and the regeneration of particle, mainly by high voltage power supply, preceding shield cover, high -pressure wire, insulated terminals, preceding steady voltage case, one or more by center electrode, foamed ceramics, stop that diesel particulate that medium pipe, outer electrode, sealed piece, spring are formed filters that regenerating unit, back steady voltage case, rear screen cover the cover, the support shell is formed. The utility model discloses the damage that can effectively avoid filtering the body is suitable for long continuous time work under diesel engine exhaust high temperature and vibration condition, long service life, and characteristics such as simple, the easy operation of equipment, energy consumption are low, mechanical strength height, it is insensitive just to use the sulfur content of diesel oil to the diesel engine, can be applied to the exhaust particle filtration purification of diesel engine.
Description
Technical field
The utility model belongs to Diesel Engine Exhaust Purification processing technology field, is specifically related to a kind of Diesel Particulate Filter technology.
Background technique
The particulate emission of diesel engine is higher, and be the important sources that can suck particulate in air, the healthy of people in serious threat.In order to effectively control the Particulate Emission of diesel engine, needing on the basis of emission controls by improving combustion technical measures, adopting post-processing technology and device to administer diesel exhaust gas.Micro particle filtering technology effectively can reduce the discharge of diesel particulation, and this technology is also at present in the world closest to commercial diesel particulation post-processing technology.But when adopting micro particle filtering technology to remove diesel particulation; particulate can accumulate in filter in the course of the work; diesel exhaust gas back pressure is caused to increase; when exceeding certain numerical value; engine power performance and Economy will obviously reduce, operation deteriorates, therefore must remove the particulate be deposited in filter in time; diesel engine just can be made to continue normal work, and said process is called the regeneration of filter.The regeneration of filter is the key that can micro particle filtering technology normally use on a diesel engine.
Current diesel particulate filtration devices, filter generally all adopts the stupalith of various structural type, and its regeneration method can be divided into initiative regeneration and passive regeneration two class.Initiative regeneration is mainly various types of hot recycling mode, and regeneration as combustion-supporting in oil spout, jet combustion-supporting regeneration, electric heating regeneration, microwave heating regeneration etc., passive regeneration mainly contains fuel oil additive regeneration, catalytic regeneration, cyclic regeneration etc. three kinds.
In prior art, adopt the diesel particulate filtration devices of hot recycling mode, easily cause the scorification of filter because filter heating is uneven or local temperature is too high, burst or fatigue damage; Adopt the diesel particulate filtration devices of fuel oil additive regeneration, the ashes of the metallic oxide formed after additive burning are all retained in filter, cannot remove online thus cause filtrating equipment normally not use; And adopting the diesel particulate filtration devices of catalytic regeneration and cyclic regeneration, the element sulphur in fuel oil can cause catalyst poisoning, is not thus suitable for high-sulphur diesel oil.
Summary of the invention
The purpose of this utility model is to provide a kind of Diesel Particulate Filter device, realize regenerating filtrating equipment at low temperatures, avoid filter scorification, burst or fatigue damage, and energy consumption when reducing regeneration, and be applicable to the exhaust of filtering the formation of high sulfur content diesel combustion.
In order to solve above technical problem, the concrete technological scheme that the utility model adopts is as follows:
A kind of Diesel Particulate Filter device, comprises high-voltage power (1), front radome (4), high-voltage conducting wires (5), insulated terminal (8), front pressure stabilizer (10), a diesel particulate filter regeneration unit or the diesel particulate filter regeneration unit of two or more parallel connection, rear pressure stabilizer (19), rear radome (20) and support shell (21); It is characterized in that: the alternation high pressure that high-voltage power (1) exports is 10 ~ 20kHz, high-voltage power (1) is connected with centre electrode (9) by high-voltage conducting wires (5), external electrode (14) ground connection; Described diesel particulate filter regeneration unit is made up of centre electrode (9), foamed ceramics (12), block media pipe (13), external electrode (14), sealing block (15), spring (16); Described centre electrode (9), foamed ceramics (12), block media pipe (13), external electrode (14) are coaxially arranged from the inside to the outside, make the region of discharge between foamed ceramics (12) centering electrode (9) outer surface and block media pipe (13) inwall;
Described external electrode (14) fits tightly and is fixed on the outer surface of block media pipe (13); External electrode (14) and block media pipe (13) are removably fixed in support shell (21) by fixed component A and sealing block (15);
Foamed ceramics (12) is fixed by the spring (16) at two ends and fixed component B and is axially positioned on centre electrode (9); There is through hole at the center of foamed ceramics (12), and centre electrode (9) is through described through hole.
Described centre electrode (9) is also fixed on front pressure stabilizer (10) and rear pressure stabilizer (19) by fixed component C, spring (7) and insulated terminal (8) location simultaneously.
Spring (7) and spring (16) play prevent from loosening, the effect of absorbing vibrational energy, compensate for heat expansion.
Described centre electrode (9) adopts stainless steel material, and external diameter is 2 ~ 3mm, to increase the effective actual internal area of diesel exhaust gas, to make the easier disruptive discharge of device produce low temperature plasma.
Described block media pipe (13) is high-purity AL
2o
3stupalith, internal diameter is 40 ~ 50mm, and thickness is 3 ~ 4mm, and axial length is 300 ~ 400mm; Described foamed ceramics (12) is SiC-AL
2o
3composite ceramic material, average pore size is 0.5 ~ 1.5mm, and porosity ratio is 75 ~ 90%; Foamed ceramics (12) is 0.2 ~ 1.0mm with the radial fit gap of block media pipe (13), the axial length of foamed ceramics (12) is 200 ~ 300mm, to ensure that the both ends of the surface of block media pipe (13) both ends of the surface and foamed ceramics (12) all leave the axial distance of 50mm as safe insulation distance; The axial length of external electrode (14) and foamed ceramics (12) is identical, and position is in axial correspondence.
Described high-voltage power (1) adopts storage battery power supply, and export as ac high-voltage, its frequency can adjust manually or automatically within the scope of 10 ~ 20kHz, thus reaches the object of regulation output voltage magnitude and device discharge power.
working procedure of the present utility model is:diesel exhaust gas, by the suction port inflow device on front pressure stabilizer, after diesel particulate filter regeneration function purification unit, flows out this device by the air outlet of rear pressure stabilizer.Utilize lower discharge power in filter process, produce a small amount of low temperature plasma, carry out charged with the filter efficiency of reinforced foam ceramic filtering body to particulate to the particulate in exhaust.When have accumulated a large amount of particulate in filter and making diesel exhaust gas back pressure raise, adopt the particulate accumulated in larger discharge power oxidation Decomposition filter to realize the regeneration of filter.
working principle of the present utility model is:when diesel exhaust gas flows through micro particle filtering regeneration function unit, particulate in exhaust is filtered and is deposited in foam ceramic filter body, containing a large amount of high-energy electron in the low temperature plasma that dielectric barrier discharge produces, can be charged to the particulate flowing through foam ceramic filter body, thus the filter efficiency of foam ceramic filter body to particulate can effectively be improved under the effect of alternating electric field, on the other hand, also negative ions is comprised in low temperature plasma, excited state particle, free radicals isoreactivity material, diesel particulates can be decomposed by the efficient oxidation, during device filtering Diesel exhaust gas particulate, less discharge power is adopted to be energy consumption in order to reduce device, and adopt larger discharge power to be to improve reproduction speed and effect when regenerating.
the utility model has beneficial effect.the low temperature plasma oxidation decomposition diesel particulates that the utility model produces by adopting gaseous discharge.Because electron temperature in low temperature plasma is far away higher than the nonequilibrium behavior of ion temperature, so temperature is lower in filter regeneration process, thus avoids the filter that hot recycling causes and damage.On the other hand, low temperature plasma is difficult to the SO in diesel exhaust gas
2be converted into SO
3, thus avoid the generation of sulphate and the deposition in filter, be applicable to high-sulphur diesel oil.Be applicable to high-sulphur diesel oil.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 has installed diesel engine system schematic block diagram of the present utility model.
In figure: 1. high-voltage power, 2. connecting bolt, 3. attaching nut, 4. radome before, 5. high-voltage conducting wires, 6. nut, 7. spring, 8. insulated terminal, 9. centre electrode, 10. pressure stabilizer before, 11. fastening screw trip bolts, 12. foamed ceramicses, 13. block media pipes, 14. external electrodes, 15. sealing blocks, 16. springs, 17. tightening nuts, 18. exhaust flanges, pressure stabilizer after 19., radome after 20., 21. support shell, 22. inlet flanges, 23. diesel engines, 24. outlet pipes, 25. storage batteries, 26. Diesel Particulate Filter devices, 27. controllers, 28. pressure transducers, 29. engine rotation speed sensors.
Embodiment
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is described in further details.
The utility model apparatus structure as shown in Figure 1, forms primarily of high-voltage power 1, front radome 4, high-voltage conducting wires 5, insulated terminal 8, front pressure stabilizer 10, one or more diesel particulate filter regeneration unit, rear pressure stabilizer 19, rear radome 20, support shell 21 be made up of centre electrode 9, foamed ceramics 12, block media pipe 13, external electrode 14, sealing block 15, spring 16.
High-voltage power 1 adopts storage battery power supply, and export as ac high-voltage, its frequency can adjust manually or automatically within the scope of 10 ~ 20kHz, thus reaches the object of regulation output voltage magnitude and device discharge power; High-voltage power 1 is connected with centre electrode 9 by high-voltage conducting wires 5, for preventing the phenomenons such as creepage or arc discharge, has high-temperature-resisting silicon rubber isolation layer outside high-voltage conducting wires 5; For ease of dismounting, high-voltage conducting wires 5 is connected with high-voltage power 1 and centre electrode 9 respectively by nut, and non-solder.High-voltage power 1 and front radome 4, front radome 4 and front pressure stabilizer 10, front pressure stabilizer 10 and support shell 21, support shell 21 and rear pressure stabilizer 19, rear pressure stabilizer 19, is convenient to carry out dismounting between each part all by connecting bolt and the pre-stressed joint of nut with rear radome 20.
Insulated terminal 8 adopts stupalith, creepage for preventing, and adopts bathtub construction, the distance of elongation center's electrode 9 and metal object; There is circular hole at its center, is convenient to centre electrode 9 and passes;
The number of regeneration unit is determined according to the size of diesel engine discharge capacity; The copper sheet that external electrode 14 adopts 0.1mm thick, is fitted tightly by high-temp glue and is fixed on the outer surface of block media pipe 13, and external electrode 14 and block media pipe 13 are fixed by fastening screw trip bolt 11 and sealing block 15 and be positioned in support shell 21.Foamed ceramics 12 is fixed by the spring 16 at two ends and tightening nut 17 and is axially positioned on centre electrode 9, there is through hole at foamed ceramics 12 center, be convenient to centre electrode 9 pass wherein, centre electrode 9 is located by nut 6, spring 7 and insulated terminal 8 and is fixed on front pressure stabilizer 10 and rear pressure stabilizer 19, spring 7 and spring 16 play prevent from loosening, the effect of absorbing vibrational energy, compensate for heat expansion, by the pretightening force of nut 6, nut 17 Regulation spring.Centre electrode 9 adopts stainless steel material, and there is outside thread at two ends, and the external diameter of centre electrode 9 is 2 ~ 3mm, to increase the effective actual internal area of diesel exhaust gas, to make the easier disruptive discharge of device produce low temperature plasma.Block media pipe 13 is high-purity AL
2o
3stupalith, its internal diameter is 40 ~ 50mm, and thickness is 3 ~ 4mm, and axial length is 300 ~ 400mm.Foamed ceramics 12 is SiC-AL
2o
3composite ceramic material, average pore size is 0.5 ~ 1.5mm, porosity ratio is 75 ~ 90%, there is unique three-dimensional communication curved hole mesh skeleton structure, foamed ceramics 12 is 0.2 ~ 1.0mm with the radial fit gap of block media pipe 13, the axial length of foamed ceramics 12 is 200 ~ 300mm, to ensure that the both ends of the surface of block media pipe 13 both ends of the surface and foamed ceramics 12 all leave the axial distance of 50mm as safe insulation distance.The axial length of external electrode 14 and foamed ceramics 12 is identical and corresponding at axial position.
embody rule process of the present utility model.Application of the present utility model as shown in Figure 2.When device described in the utility model is used for the particulate in purification diesel engine exhaust, device is connected on the outlet pipe 24 of diesel engine 23 by the inlet flange 22 on front pressure stabilizer 10 and the exhaust flange 18 on rear pressure stabilizer 19, storage battery 25 pairs of devices are powered, controller 27 receives the signal that also processing pressure sensor 28 and diesel engine speed sensor 29 send, according to engine speed and exhaust back pressure judgment means the need of regeneration, when device does not need regeneration, by controlling the frequency of okperation of high-voltage power 1, make device with less discharge power work, produce low temperature plasma charged to the particulate flowing through foamed ceramics, with the filter efficiency of intensifier to diesel particulates, reduce energy consumption, and when have accumulated a large amount of particulate in foam pottery 12 and needing regeneration, device adopts larger discharge power electric discharge to decompose the particulate of accumulation, with the efficient rapid regeneration of implement device.
Claims (5)
1. a Diesel Particulate Filter device, comprises high-voltage power (1), front radome (4), high-voltage conducting wires (5), insulated terminal (8), front pressure stabilizer (10), a diesel particulate filter regeneration unit or the diesel particulate filter regeneration unit of two or more parallel connection, rear pressure stabilizer (19), rear radome (20) and support shell (21);
It is characterized in that: the alternation high pressure that high-voltage power (1) exports is 10 ~ 20kHz, high-voltage power (1) is connected with centre electrode (9) by high-voltage conducting wires (5), external electrode (14) ground connection; Described diesel particulate filter regeneration unit is made up of centre electrode (9), foamed ceramics (12), block media pipe (13), external electrode (14), sealing block (15), spring (16); Described centre electrode (9), foamed ceramics (12), block media pipe (13), external electrode (14) are coaxially arranged from the inside to the outside, make the region of discharge between foamed ceramics (12) centering electrode (9) outer surface and block media pipe (13) inwall;
Described external electrode (14) fits tightly and is fixed on the outer surface of block media pipe (13); External electrode (14) and block media pipe (13) are removably fixed in support shell (21) by fixed component A and sealing block (15);
Foamed ceramics (12) is fixed by the spring (16) at two ends and fixed component B and is axially positioned on centre electrode (9); There is through hole at the center of foamed ceramics (12), and centre electrode (9) is through described through hole.
2. a kind of Diesel Particulate Filter device according to claim 1, is characterized in that: described centre electrode (9) is also fixed on front pressure stabilizer (10) and rear pressure stabilizer (19) by fixed component C, spring (7) and insulated terminal (8) location simultaneously.
3. a kind of Diesel Particulate Filter device according to claim 1, is characterized in that: described centre electrode (9) adopts stainless steel material, and external diameter is 2 ~ 3mm.
4. a kind of Diesel Particulate Filter device according to claim 1, is characterized in that: described block media pipe (13) is high-purity AL
2o
3stupalith, internal diameter is 40 ~ 50mm, and thickness is 3 ~ 4mm, and axial length is 300 ~ 400mm; Described foamed ceramics (12) is SiC-AL
2o
3composite ceramic material, average pore size is 0.5 ~ 1.5mm, and porosity ratio is 75 ~ 90%; Foamed ceramics (12) is 0.2 ~ 1.0mm with the radial fit gap of block media pipe (13), and the axial length of foamed ceramics (12) is 200 ~ 300mm; The both ends of the surface of block media pipe (13) both ends of the surface and foamed ceramics (12) all leave the axial distance of 50mm; The axial length of external electrode (14) and foamed ceramics (12) is identical, and position is in axial correspondence.
5. a kind of Diesel Particulate Filter device according to claim 1, is characterized in that: described high-voltage power (1) adopts storage battery power supply, and export as ac high-voltage, frequency is adjustable within the scope of 10 ~ 20kHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520094588.1U CN205047277U (en) | 2015-02-11 | 2015-02-11 | Diesel engine exhaust particle filter equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520094588.1U CN205047277U (en) | 2015-02-11 | 2015-02-11 | Diesel engine exhaust particle filter equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205047277U true CN205047277U (en) | 2016-02-24 |
Family
ID=55340865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520094588.1U Withdrawn - After Issue CN205047277U (en) | 2015-02-11 | 2015-02-11 | Diesel engine exhaust particle filter equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205047277U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632322A (en) * | 2015-02-11 | 2015-05-20 | 盐城市富源油箱有限公司 | Diesel engine exhausting micro-particle filtering device |
-
2015
- 2015-02-11 CN CN201520094588.1U patent/CN205047277U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632322A (en) * | 2015-02-11 | 2015-05-20 | 盐城市富源油箱有限公司 | Diesel engine exhausting micro-particle filtering device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160224 Effective date of abandoning: 20170412 |