CN203732345U - Engine exhaust particulate diluting system - Google Patents
Engine exhaust particulate diluting system Download PDFInfo
- Publication number
- CN203732345U CN203732345U CN201420053411.2U CN201420053411U CN203732345U CN 203732345 U CN203732345 U CN 203732345U CN 201420053411 U CN201420053411 U CN 201420053411U CN 203732345 U CN203732345 U CN 203732345U
- Authority
- CN
- China
- Prior art keywords
- level
- dilution
- dilution tunnel
- ring flange
- exhaust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses an engine exhaust particulate diluting system and aims at solving the problem of unachievable large-range, accurately controlled dilution ratio adjustment of the prior art. The system comprises a first-stage dilution part, a second-stage dilution part and a first-stage exhaust diverter part. The first-stage exhaust diverter part comprises a three-way pipe (11), a first-stage exhaust diverter valve (12) and a first-stage exhaust diverter pipe (13). The right end of the three-way pipe (11) is hermetically connected with the left end of the first-stage exhaust diverter valve (12), the right end of the first-stage exhaust diverter valve (12) is hermetically connected with the left end of the first-stage exhaust diverter pipe (13) by virtue of threads, the lower end of the first-stage exhaust diverter pipe (13) is hermetically connected with a No.2 second-stage dilution pipeline (16) of the second-stage dilution part, the upper end of the three-way pipe (11) is hermetically connected with the lower end of a No.4 first-stage dilution pipeline (10) in the first-stage dilution part, and the lower end of the three-way pipe (11) is hermetically connected with the middle part of the No.2 second-stage dilution pipeline (16) in the second-stage dilution part.
Description
Technical field
The utility model relates to a kind of device that is applied to field of internal combustion engine, and or rather, the utility model relates to a kind of engine exhaust gas particulate dilution system.
Background technology
Along with going from bad to worse of atmospheric environment, engine exhaust more and more causes people's concern to the pollution of air, is the principal element that causes environmental problem as the exhaust gas particulate of engine exhaust important component, and the thermometrically technology of exhaust gas particulate is also more and more important.
Engine exhaust gas particulate will be first before entering particle size instrument and measuring dilute through exhaust gas particulate dilution system cooling, to meet the requirement of Abgasgesetz and surveying instrument.The most important parameter of dilution system is dilution ratio, and dilution ratio refers to the cumulative volume and the ratio of introducing exhaust volume of introducing dilution system exhaust and air, and desirable particulate dilution system should meet following two conditions:
1. the accurate control of dilution ratio, the size of dilution ratio can have influence on temperature and the particle concentration size of the rear gas of dilution, and this is very important to ensureing Stability and veracity of particle size measurement result;
2. dilution ratio can regulate on a large scale, and adjustable dilution system can be applied in the engine Particulate Emission measurement of different displacements, different model on a large scale, and applied range is cost-saving.
Dilution system in the market has single-stage dilution system and secondary dilution system, due to the restriction of compressor flow, cannot increase substantially the air capacity that enters dilution system, simultaneously to introducing dilution system air capacity without corresponding regulating device, this has just limited traditional dilution system and has realized larger dilution ratio, regulates thereby cannot realize the dilution ratio of, accurately controlling on a large scale.
Summary of the invention
Technical problem to be solved in the utility model is to have overcome the problem that prior art exists the dilution ratio that cannot realize on a large scale, accurately control to regulate, and a kind of engine exhaust gas particulate dilution system is provided.
For solving the problems of the technologies described above, the utility model is to adopt following technical scheme to realize: described engine exhaust gas particulate dilution system comprises first order dilution part, second level dilution part and one-level bypassing exhaust part;
Described one-level bypassing exhaust part comprises one-level bypassing exhaust valve and the one-level exhaust shunt tube that three-way pipe, model are DN-65.
The right-hand member of three-way pipe and model are the left end fixed seal connection of the one-level bypassing exhaust valve of DN-65, model is that the right-hand member of one-level bypassing exhaust valve and the upper end of one-level exhaust shunt tube of DN-65 is that thread seal is connected, No. 2 secondary dilution tunnel fixed seal connection in the lower end of one-level exhaust shunt tube and second level dilution part, the lower end fixed seal connection of No. 4 one-level dilution tunnel in the upper end of three-way pipe and first order dilution part, the middle part fixed seal connection of No. 2 secondary dilution tunnel in the lower end of three-way pipe and second level dilution part.
The right-hand member of the three-way pipe described in technical scheme and model are that the left end fixed seal connection of the one-level bypassing exhaust valve of DN-65 refers to: the left end of the one-level bypassing exhaust valve that the right-hand member of three-way pipe and model are DN-65 is provided with ring flange, between the left end ring flange of the one-level bypassing exhaust valve (12) that the right-hand member ring flange of three-way pipe and model are DN-65, be placed with silica gel sealing pad No. 4, the right-hand member ring flange of three-way pipe (11), the left end ring flange of the one-level bypassing exhaust valve (12) that No. 4 silica gel sealing pads and model are DN-65 adopts bolt to fix, the right-hand member ring flange of the fixing three-way pipe (11) of bolt, the periphery sealant sealing of the left end ring flange of the one-level bypassing exhaust valve (12) that No. 4 silica gel sealing pads and model are DN-65.
The lower end fixed seal connection of No. 4 one-level dilution tunnel in the upper end of the three-way pipe described in technical scheme and first order dilution part refers to: the lower end of No. 4 one-level dilution tunnel and the upper end of three-way pipe are provided with ring flange, between the lower end ring flange of No. 4 one-level dilution tunnel and the upper flanges dish of three-way pipe, be placed with silica gel sealing pad No. 3, the lower end ring flange of No. 4 one-level dilution tunnel, the upper flanges dish of No. 3 silica gel sealing pads and three-way pipe adopts bolt to fix, the lower end ring flange of No. 4 fixing one-level dilution tunnel, the periphery sealant sealing of the upper flanges dish of No. 3 silica gel sealing pads and three-way pipe.
No. 2 secondary dilution tunnel fixed seal connection in the lower end of the one-level exhaust shunt tube described in technical scheme and second level dilution part refers to: the lower end of one-level exhaust shunt tube is provided with ring flange, the right-hand member of No. 2 secondary dilution tunnel is provided with one-level bypassing exhaust pipe flange, between one-level bypassing exhaust pipe flange in the lower end ring flange of one-level exhaust shunt tube and No. 2 secondary dilution tunnel, be placed with silica gel sealing pad No. 5, the lower end ring flange of one-level exhaust shunt tube, one-level bypassing exhaust pipe flange in No. 5 silica gel sealing pads and No. 2 secondary dilution tunnel adopts bolt to fix, the lower end ring flange of fixing one-level exhaust shunt tube, the periphery sealant sealing of the one-level bypassing exhaust pipe flange in No. 5 silica gel sealing pads and No. 2 secondary dilution tunnel.
The middle part fixed seal connection of No. 2 secondary dilution tunnel (16) in the lower end of the three-way pipe described in technical scheme and second level dilution part refers to: the middle part of No. 2 secondary dilution tunnel and the lower end of three-way pipe are all provided with ring flange, the central flange dish of No. 2 secondary dilution tunnel is to be placed with silica gel sealing pad No. 6 between threeway ring flange and the ring flange of three-way pipe lower end, threeway ring flange in No. 2 secondary dilution tunnel, the lower end ring flange of No. 6 silica gel sealing pads and three-way pipe adopts bolt to fix, threeway ring flange in No. 2 fixing secondary dilution tunnel, the periphery sealant sealing of the lower end ring flange of No. 6 silica gel sealing pads and three-way pipe.
The first order described in technical scheme dilution part also comprises main air flowrate control valve, No. 3 one-level dilution tunnel, Venturi tube, exhaust inlet tube and the exhaust pressurizer tanks that one-level high pressure vacuum blower fan that No. 1 one-level dilution tunnel, model are CZR-LY60, No. 2 one-level dilution tunnel, models are DN-15.The air intake opening thread seal of the one-level high pressure vacuum blower fan that the right-hand member of No. 1 one-level dilution tunnel is CZR-LY60 with model is connected, model is that the gas outlet of one-level high pressure vacuum blower fan and the left end thread seal of No. 2 one-level dilution tunnel of CZR-LY60 is connected, the left end thread seal of the main air flowrate control valve that No. 2 one-level dilution tunnel (3) right-hand member is DN-15 with model is connected, model is that the right-hand member of main air flowrate control valve and the left end thread seal of No. 3 one-level dilution tunnel of DN-15 is connected, the right-hand member of No. 3 one-level dilution tunnel and the left end of Venturi tube are fixed seal connection, the upper end of exhaust inlet tube is stretched in the exhaust pipe of engine, exhaust inlet tube is that thread seal is connected with the exhaust pipe of engine, the upper surface of the lower end of exhaust inlet tube and exhaust pressurizer tank is for being welded to connect, the bottom face of exhaust pressurizer tank adopts pipeline to be connected with the middle part thread seal of Venturi tube, the right-hand member of Venturi tube adopts the upper end of bolt and No. 4 one-level dilution tunnel to be sealedly and fixedly connected.
The right-hand member of No. 3 one-level dilution tunnel described in technical scheme and the left end of Venturi tube are that fixed seal connection refers to: the ring flange of No. 3 one-level dilution tunnel right-hand member settings is connected with the ring flange that Venturi tube left end arranges, between the right-hand member ring flange of No. 3 one-level dilution tunnel and the left end ring flange of Venturi tube, be placed with silica gel sealing pad No. 1, the right-hand member ring flange of No. 3 one-level dilution tunnel, the left end ring flange of No. 1 silica gel sealing pad and Venturi tube adopts bolt to fix, the right-hand member ring flange of No. 3 fixing one-level dilution tunnel, the periphery sealant sealing of the left end ring flange of No. 1 silica gel sealing pad and Venturi tube.
The right-hand member of the Venturi tube described in technical scheme adopts the upper end of bolt and No. 4 one-level dilution tunnel to be sealedly and fixedly connected and refers to: the upper end of the right-hand member of Venturi tube and No. 4 one-level dilution tunnel is respectively arranged with ring flange, between the right-hand member ring flange of Venturi tube and the upper flanges dish of No. 4 one-level dilution tunnel, be placed with silica gel sealing pad No. 2, the right-hand member ring flange of Venturi tube, the upper flanges dish of No. 2 silica gel sealing pads and No. 4 one-level dilution tunnel adopts bolt to fix, the right-hand member ring flange of fixing Venturi tube, the periphery sealant sealing of the upper flanges dish of No. 2 silica gel sealing pads and No. 4 one-level dilution tunnel.
The second level described in technical scheme dilution part also comprises the sampling probe that secondary air flowrate control valve that No. 1 secondary dilution tunnel, model are DN-65, secondary high pressure vacuum blower fan that model is DF-2, No. 3 secondary dilution tunnel and model are EEPS3090.Model is that the left end of secondary air flowrate control valve and the right-hand member thread seal of No. 1 secondary dilution tunnel of DN-65 is connected, model is that the right-hand member of secondary air flowrate control valve and the left end thread seal of No. 2 secondary dilution tunnel of DN-65 is connected, the left end thread seal of the secondary high pressure vacuum blower fan (17) that the right-hand member of No. 2 secondary dilution tunnel (16) is DF-2 with model is connected, model is that the right-hand member of the secondary high pressure vacuum blower fan (17) of DF-2 is connected with the left end thread seal of No. 3 secondary dilution tunnel (18), be provided with in No. 2 secondary dilution tunnel centre positions the threeway ring flange that three-way pipe is installed, in No. 2 secondary dilution tunnel on threeway ring flange right side, be provided with the one-level bypassing exhaust pipe flange that one-level exhaust shunt tube is installed, in No. 2 secondary dilution tunnel between threeway ring flange and one-level bypassing exhaust pipe flange, be provided with sampling probe interface, model is that the sampling probe of EEPS3090 is that thread seal is connected with the sampling probe interface in No. 2 secondary dilution tunnel.
First order dilution part described in technical scheme, second level dilution part are all arranged in same level with all parts in one-level bypassing exhaust part.No. 1 one-level dilution tunnel adopting in first order dilution part, second level dilution part and one-level bypassing exhaust part, No. 2 one-level dilution tunnel, No. 3 one-level dilution tunnel, No. 4 one-level dilution tunnel, one-level exhaust shunt tube, No. 1 secondary dilution tunnel, No. 2 secondary dilution tunnel, No. 3 secondary dilution tunnel and three-way pipe are cylindrical conduit, and insides of pipes is coated with polytetrafluorethylecoatings coatings.
Compared with prior art the beneficial effects of the utility model are:
1. the main air flowrate control valve of engine exhaust gas particulate dilution system described in the utility model and secondary air flowrate control valve are realized the coarse adjustment of dilution ratio, the dilution ratio fine setting realizing in conjunction with one-level bypassing exhaust valve, can accomplish the accurate control of dilution ratio, obtain experimental result more accurately, one-level bypassing exhaust valve opens completely and cuts out completely and can obtain respectively very large and very little dilution ratio simultaneously, realize the adjustable of dilution ratio on a large scale, applied range.
2. the pipe interior of engine exhaust gas particulate dilution system described in the utility model all applies polytetrafluorethylecoatings coatings, can greatly reduce the absorption of exhaust gas particulate at pipeline, improves experimental precision, dwindles experimental error.
3. exhaust pressurizer tank is first passed through in the exhaust that engine exhaust gas particulate dilution system described in the utility model is introduced by exhaust inlet tube, can ensure to enter the stability of dilution system exhaust gas composition, reduces due to the unstable experimental data error causing of engine operating condition
4. engine exhaust gas particulate dilution system financial cost described in the utility model is low, and transformation is simple, easy to maintenance.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is further described:
Fig. 1 is the structural representation of engine exhaust gas particulate dilution system described in the utility model.
In figure: No. 1.1 one-level dilution tunnel, 2. one-level high pressure vacuum blower fan, No. 3.2 one-level dilution tunnel, 4. main air flowrate control valve, No. 5.3 one-level dilution tunnel, 6. exhaust inlet tube, 7. exhaust pressurizer tank, 8. gas outlet, 9. Venturi tube, No. 10.4 one-level dilution tunnel, 11. three-way pipes, 12. one-level bypassing exhaust valves, 13. one-level exhaust shunt tube, No. 14.1 secondary dilution tunnel, 15. secondary air flowrate control valves, No. 16.2 secondary dilution tunnel, 17. secondary high pressure vacuum blower fans, No. 18.3 secondary dilution tunnel, 19. sampling probes.
Embodiment
Below in conjunction with accompanying drawing, the utility model is explained in detail:
The utility model provides a kind of engine exhaust gas particulate dilution system that belongs to field of internal combustion engine.Engine exhaust gas particulate dilution system described in the utility model comprises first order dilution part, second level dilution part and one-level bypassing exhaust part, all parts are all arranged in same level, all pipelines are cylindrical conduit, and insides of pipes is coated with polytetrafluorethylecoatings coatings.
First order dilution part is divided and is comprised one-level dilution tunnel 1 No. 1, model is the one-level high pressure vacuum blower fan 2 of CZR-LY60, No. 2 one-level dilution tunnel 3, model is 4, No. 3 one-level dilution tunnel 5 of main air flowrate control valve of DN-15, exhaust inlet tube 6, exhaust pressurizer tank 7,10, No. 1 silica gel sealing pads of 9, No. 4 one-level dilution tunnel of Venturi tube and No. 2 silica gel sealing pads.
Model is that one-level high pressure vacuum blower fan 2 air inflows of CZR-LY60 are 7m
3/ min, blast is 1.5kpa, the main air flowrate control valve 4 that model is DN-15 is rotary valve, between Venturi tube 9 middle parts and left end and right-hand member, be circular cone cavity, Venturi tube 9 two ends are welded with ring flange, exhaust pressurizer tank 7 is cylindrical tube part, bottom surface diameter 20cm, high 30cm, the wall thickness 1mm of exhaust pressurizer tank 7 in embodiment.
The air intake opening thread seal of the one-level high pressure vacuum blower fan 2 that No. 1 one-level dilution tunnel 1 is CZR-LY60 with model is connected, model is that the gas outlet of the one-level high pressure vacuum blower fan 2 of CZR-LY60 is connected with No. 2 one-level dilution tunnel 3 left end thread seals, one (left side) end thread seal of the main air flowrate control valve 4 that No. 2 one-level dilution tunnel 3 right-hand members are DN-15 with model is connected, the rotary valve that main air flowrate control valve 4 is DN-15 for model, model is that another (right side) end of the main air flowrate control valve 4 of DN-15 is connected with No. 3 one-level dilution tunnel 5 left end thread seals, the left end of No. 3 one-level dilution tunnel 5 right-hand members and Venturi tube 9 is fixed seal connection.The right-hand member of No. 3 one-level dilution tunnel 5 is provided with ring flange, be connected with the ring flange of the left end of Venturi tube 9, between the ring flange of the right-hand member ring flange of No. 3 one-level dilution tunnel 5 and the left end of Venturi tube 9, be placed with No. 1 silica gel sealing pad, the left end ring flange of the right-hand member ring flange of No. 3 one-level dilution tunnel 5, No. 1 silica gel sealing pad and Venturi tube 9 adopts 8 bolt and nuts to be fixed, the periphery sealant sealing of the left end ring flange of the right-hand member ring flange of No. 3 one-level dilution tunnel 5 that are fixed, No. 1 silica gel sealing pad and Venturi tube 9.Exhaust inlet tube 6 be rectangular in shape one (on) end stretch in the exhaust pipe of engine 8, the tube wall of exhaust inlet tube 6 is that thread seal is connected with the tube wall of the exhaust pipe of engine 8, exhaust inlet tube 6 another (under) end with the upper end of exhaust pressurizer tank 7 for being welded to connect, the middle part of the bottom face of exhaust pressurizer tank 7 and Venturi tube 9 adopts pipeline thread to be tightly connected, exhaust pressurizer tank 7 in embodiment is bottom surface diameter 20cm, high 30cm, the cylindrical tube of wall thickness 1mm, the right-hand member of Venturi tube 9 is sealedly and fixedly connected by bolt and No. 4 one-level dilution tunnel 10 upper ends.Be that the right-hand member of Venturi tube 9 and the upper end of No. 4 one-level dilution tunnel 10 are respectively arranged with ring flange, between the right-hand member ring flange of Venturi tube 9 and the upper flanges dish of No. 4 one-level dilution tunnel 10, be placed with silica gel sealing pad No. 2, the upper flanges dish of the right-hand member ring flange of Venturi tube 9, No. 2 silica gel sealing pads and No. 4 one-level dilution tunnel 10 adopts 8 bolt and nuts to be fixed, the periphery sealant sealing of the upper flanges dish of the right-hand member ring flange of the Venturi tube 9 being fixed, No. 2 silica gel sealing pads and No. 4 one-level dilution tunnel 10.
Second level dilution part is divided and is comprised secondary dilution tunnel 14 No. 1, model is the secondary air flowrate control valve 15 of DN-65, No. 2 secondary dilution tunnel 16, model is the secondary high pressure vacuum blower fan 17 of DF-2, No. 3 secondary dilution tunnel 18, model is 19, No. 5 silica gel sealing pads of sampling probe and No. 6 silica gel sealing pads of EEPS3090.
Model is that the air inflow of the secondary high pressure vacuum blower fan 17 of DF-2 is 1200m
3/ min, blast is 2000pa, the secondary air flowrate control valve 15 that model is DN-65 is rotary valve.Model is that the two ends, left and right of the secondary air flowrate control valve 15 of DN-65 are connected with the right-hand member of No. 1 secondary dilution tunnel 14, the left end thread seal of No. 2 secondary dilution tunnel 16 successively.Model is that secondary high pressure vacuum blower fan 17 two ends, left and right of DF-2 are connected with the right-hand member of No. 2 secondary dilution tunnel 16, the left end thread seal of No. 3 secondary dilution tunnel 18 successively.No. 2 secondary dilution tunnel 16 centre position places are provided with the three-way pipe ring flange that three-way pipe 11 is installed, in No. 2 secondary dilution tunnel 16 on three-way pipe ring flange right side, be provided with the one-level bypassing exhaust pipe flange that one-level exhaust shunt tube 13 is installed, in No. 2 secondary dilution tunnel (16) between threeway ring flange and one-level bypassing exhaust pipe flange, be provided with sampling probe interface, model is that the sampling probe 19 of EEPS3090 is arranged on the sampling probe interface in No. 2 secondary dilution tunnel 16 between three-way pipe ring flange and one-level bypassing exhaust pipe flange, model is that the sampling probe 19 of EEPS3090 is that thread seal is connected with the sampling probe interface in No. 2 secondary dilution tunnel 16, model is that the sampling probe 19 of EEPS3090 is for the sampling of the engine exhaust gas particulate through dilution.
One-level bypassing exhaust part comprises the one-level bypassing exhaust valve 12 that three-way pipe 11, model are DN-65,13, No. 4 silica gel sealing pads of one-level exhaust shunt tube.
Model is that the one-level bypassing exhaust valve 12 of DN-65 is rotary valve, and three mouth of pipe end faces of three-way pipe 11 are all welded with ring flange, and the lower end of one-level exhaust shunt tube 13 is welded with ring flange.
The right-hand member of three-way pipe 11 and model are the left end fixed seal connection of the one-level bypassing exhaust valve 12 of DN-65.The left end fixed seal connection of the one-level bypassing exhaust valve 12 that the right-hand member of described three-way pipe 11 and model are DN-65 refers to: the left end connection of the right-hand member of three-way pipe 11 and one-level bypassing exhaust valve 12 is provided with ring flange, between the ring flange of the ring flange of three-way pipe 11 right-hand members and one-level bypassing exhaust valve 12 left ends, be placed with silica gel sealing pad No. 4, the ring flange of three-way pipe 11 right-hand members, the ring flange of No. 4 silica gel sealing pads and one-level bypassing exhaust valve 12 left ends adopts 8 bolt and nuts to be fixed, the ring flange of three-way pipe 11 right-hand members that are fixed, the periphery sealant sealing of the ring flange of No. 4 silica gel sealing pads and one-level bypassing exhaust valve 12 left ends.Model be one-level bypassing exhaust valve 12 right-hand members of DN-65 with a left side for one-level exhaust shunt tube 13 (on) end is connected for thread seal.
First order dilution part with the connected mode of one-level bypassing exhaust part is: the upper end fixed seal connection of the lower end of No. 4 one-level dilution tunnel 10 and three-way pipe 11.The lower end of No. 4 described one-level dilution tunnel 10 and the upper end fixed seal connection of three-way pipe 11 refer to: the connection, upper end of the lower end of No. 4 one-level dilution tunnel 10 and three-way pipe 11 is provided with ring flange, between the ring flange of the ring flange of No. 4 one-level dilution tunnel 10 lower ends and three-way pipe 11 upper ends, be placed with No. 3 silica gel sealing pad, the ring flange of No. 4 one-level dilution tunnel 10 lower ends, the ring flange of No. 3 silica gel sealing pads and three-way pipe 11 upper ends adopts 8 bolt and nuts to be fixed, the ring flange of No. 4 one-level dilution tunnel 10 lower ends that are fixed, the periphery sealant sealing of the upper flanges dish of No. 3 silica gel sealing pads and three-way pipe 11.
The connected mode of one-level bypassing exhaust part and second level dilution part is: the right side of one-level exhaust shunt tube 13 (under) one-level bypassing exhaust pipe flange fixed seal connection in end and No. 2 secondary dilution tunnel 16, one-level bypassing exhaust pipe flange in No. 2 secondary dilution tunnel 16 refers to the ring flange arranging in secondary high pressure vacuum blower fan 17 left sides and in No. 2 secondary dilution tunnel 16 between sampling probe 19 and secondary high pressure vacuum blower fan 17, the right side of described one-level exhaust shunt tube 13 (under) end refers to the one-level bypassing exhaust pipe flange fixed seal connection in No. 2 secondary dilution tunnel 16: the connection in the right-hand member of one-level exhaust shunt tube 13 and No. 2 secondary dilution tunnel 16 is provided with ring flange, between one-level bypassing exhaust pipe flange in the ring flange of one-level exhaust shunt tube 13 right-hand members and No. 2 secondary dilution tunnel 16, be placed with silica gel sealing pad No. 5, the ring flange of one-level exhaust shunt tube 13 right-hand members, one-level bypassing exhaust pipe flange in No. 5 silica gel sealing pads and No. 2 secondary dilution tunnel 16 adopts 8 bolt and nuts to be fixed, the ring flange of one-level exhaust shunt tube 13 right-hand members that are fixed, the periphery sealant sealing of the one-level bypassing exhaust pipe flange in No. 5 silica gel sealing pads and No. 2 secondary dilution tunnel 16.The lower end fixed seal connection of the middle part of No. 2 secondary dilution tunnel 16 and three-way pipe 11.The middle part of No. 2 described secondary dilution tunnel 16 and the lower end fixed seal connection of three-way pipe 11 refer to: the connection, lower end of the middle part of No. 2 secondary dilution tunnel 16 and three-way pipe 11 is provided with ring flange, between the ring flange of the ring flange at No. 2 secondary dilution tunnel 16 middle parts and three-way pipe 11 lower ends, be placed with No. 6 silica gel sealing pad, the ring flange at No. 2 secondary dilution tunnel 16 middle parts, the ring flange of No. 6 silica gel sealing pads and three-way pipe 11 lower ends adopts 8 bolt and nuts to be fixed, the ring flange at No. 2 secondary dilution tunnel 16 middle parts that are fixed, the periphery sealant sealing of the ring flange of No. 6 silica gel sealing pads and three-way pipe 11 lower ends.
The principle of work of engine exhaust gas particulate dilution system:
Under the low pressure effect forming in Venturi tube 9, engine exhaust is partly incorporated in exhaust pressurizer tank 7, exhaust after voltage stabilizing enters in Venturi tube 9 along exhaust inlet tube 6, under one-level high pressure vacuum blower fan 2 effects that extraneous pure air is CZR-LY60 in model, enter that No. 2 one-level dilution tunnel 3 are interior carries out first order dilution to sucking exhaust, regulate the main air flowrate control valve 4 that model is DN-15, control the air capacity of introducing in No. 2 one-level dilution tunnel 3, thereby regulate dilution ratio to desired value, the suction function next part diluted exhaust that the secondary high pressure vacuum blower fan 17 that gas after one-level dilution is DF-2 through three-way pipe 11 in model forms enters into secondary dilution tunnel 16 No. 2, gas after one-level dilution mixes with outside air again, carry out second level dilution, gas after the dilution of another part one-level, successively by three-way pipe 11, one-level bypassing exhaust valve 12 and one-level exhaust shunt tube 13, directly enters atmosphere.The common second level dilution ratio that regulates of one-level bypassing exhaust valve 12 that the secondary air flowrate control valve 15 that is DN-65 by model and model are DN-65 is to desired value, the sampling probe 19 that is EEPS3090 by model through the exhaust of two-stage dilution is sampled, and measures exhaust gas particulate size-grade distribution.When main air flowrate control valve 4, when secondary air flowrate control valve 15 and one-level bypassing exhaust valve 12 are opened completely, because the pure air amount of introducing is maximal value, and the air capacity that enters into No. 2 secondary dilution tunnel 16 is minimum value, now can obtain larger dilution ratio (450～480), when part is opened main air flowrate control valve 4, while closing one-level bypassing exhaust valve 12 and secondary air flowrate control valve 12 simultaneously, because the pure air amount of introducing is minimum value, and the air capacity that enters into No. 2 secondary dilution tunnel 16 is maximal value, now can obtain less dilution ratio (50～100), like this by main air flowrate control valve 4, jointly controlling of secondary air flowrate control valve 15 and one-level bypassing exhaust valve 12, can realize the adjusting of (50～480) on a large scale of dilution system dilution ratio, can be widely used in the test of each type engine exhaust gas particulate.
Claims (10)
1. an engine exhaust gas particulate dilution system, is characterized in that, described engine exhaust gas particulate dilution system comprises first order dilution part, second level dilution part and one-level bypassing exhaust part;
One-level bypassing exhaust part comprises the one-level bypassing exhaust valve (12) and one-level exhaust shunt tube (13) that three-way pipe (11), model are DN-65;
The left end fixed seal connection of the one-level bypassing exhaust valve (12) that the right-hand member of three-way pipe (11) and model are DN-65, model is that the right-hand member of the one-level bypassing exhaust valve (12) of DN-65 is that thread seal is connected with the left end of one-level exhaust shunt tube (13), No. 2 secondary dilution tunnel (16) fixed seal connection in the lower end of one-level exhaust shunt tube (13) and second level dilution part, the lower end fixed seal connection of No. 4 one-level dilution tunnel (10) in the upper end of three-way pipe (11) and first order dilution part, the middle part fixed seal connection of No. 2 secondary dilution tunnel (16) in the lower end of three-way pipe (11) and second level dilution part.
2. according to engine exhaust gas particulate dilution system claimed in claim 1, it is characterized in that, the left end fixed seal connection of the right-hand member of described three-way pipe (11) and the one-level bypassing exhaust valve (12) that model is DN-65 refers to: the left end of the one-level bypassing exhaust valve (12) that the right-hand member of three-way pipe (11) and model are DN-65 is provided with ring flange, between the left end ring flange of the one-level bypassing exhaust valve (12) that the right-hand member ring flange of three-way pipe (11) and model are DN-65, be placed with silica gel sealing pad No. 4, the right-hand member ring flange of three-way pipe (11), the left end ring flange of the one-level bypassing exhaust valve (12) that No. 4 silica gel sealing pads and model are DN-65 adopts bolt to fix, the right-hand member ring flange of the fixing three-way pipe (11) of bolt, the periphery sealant sealing of the left end ring flange of the one-level bypassing exhaust valve (12) that No. 4 silica gel sealing pads and model are DN-65.
3. according to engine exhaust gas particulate dilution system claimed in claim 1, it is characterized in that, the lower end fixed seal connection of No. 4 one-level dilution tunnel (10) in the upper end of described three-way pipe (11) and first order dilution part refers to: the upper end of the lower end of No. 4 one-level dilution tunnel (10) and three-way pipe (11) is provided with ring flange, between the upper flanges dish of the lower end ring flange of No. 4 one-level dilution tunnel (10) and three-way pipe (11), be placed with No. 3 silica gel sealing pad, the lower end ring flange of No. 4 one-level dilution tunnel (10), the upper flanges dish of No. 3 silica gel sealing pads and three-way pipe (11) adopts bolt to fix, the lower end ring flange of fixing No. 4 one-level dilution tunnel (10), the periphery sealant sealing of the upper flanges dish of No. 3 silica gel sealing pads and three-way pipe (11).
4. according to engine exhaust gas particulate dilution system claimed in claim 1, it is characterized in that, No. 2 secondary dilution tunnel (16) fixed seal connection in the lower end of described one-level exhaust shunt tube (13) and second level dilution part refers to: the lower end of one-level exhaust shunt tube (13) is provided with ring flange, the right-hand member of No. 2 secondary dilution tunnel (16) is provided with one-level bypassing exhaust pipe flange, between one-level bypassing exhaust pipe flange in the lower end ring flange of one-level exhaust shunt tube (13) and No. 2 secondary dilution tunnel (16), be placed with silica gel sealing pad No. 5, the lower end ring flange of one-level exhaust shunt tube (13), one-level bypassing exhaust pipe flange in No. 5 silica gel sealing pads and No. 2 secondary dilution tunnel (16) adopts bolt to fix, the lower end ring flange of fixing one-level exhaust shunt tube (13), the periphery sealant sealing of the one-level bypassing exhaust pipe flange in No. 5 silica gel sealing pads and No. 2 secondary dilution tunnel (16).
5. according to engine exhaust gas particulate dilution system claimed in claim 1, it is characterized in that, the middle part fixed seal connection of No. 2 secondary dilution tunnel (16) in the lower end of described three-way pipe (11) and second level dilution part refers to: the lower end of the middle part of No. 2 secondary dilution tunnel (16) and three-way pipe (11) is all provided with ring flange, the central flange dish of No. 2 secondary dilution tunnel (16) is to be placed with silica gel sealing pad No. 6 between threeway ring flange and the ring flange of three-way pipe (11) lower end, threeway ring flange in No. 2 secondary dilution tunnel (16), the lower end ring flange of No. 6 silica gel sealing pads and three-way pipe (11) adopts bolt to fix, threeway ring flange in fixing No. 2 secondary dilution tunnel (16), the periphery sealant sealing of the lower end ring flange of No. 6 silica gel sealing pads and three-way pipe (11).
6. according to engine exhaust gas particulate dilution system claimed in claim 1, it is characterized in that, described first order dilution part also comprises main air flowrate control valve (4), No. 3 one-level dilution tunnel (5), Venturi tube (9), the exhaust inlet tube (6) and exhaust pressurizer tank (7) that one-level high pressure vacuum blower fan (2), No. 2 one-level dilution tunnel (3), model that No. 1 one-level dilution tunnel (1), model are CZR-LY60 are DN-15;
The air intake opening thread seal of the one-level high pressure vacuum blower fan (2) that the right-hand member of No. 1 one-level dilution tunnel (1) is CZR-LY60 with model is connected, model is that the gas outlet of the one-level high pressure vacuum blower fan (2) of CZR-LY60 is connected with the left end thread seal of No. 2 one-level dilution tunnel (3), the left end thread seal of the main air flowrate control valve (4) that No. 2 one-level dilution tunnel (3) right-hand member is DN-15 with model is connected, model is that the right-hand member of the main air flowrate control valve (4) of DN-15 is connected with the left end thread seal of No. 3 one-level dilution tunnel (5), the left end of the right-hand member of No. 3 one-level dilution tunnel (5) and Venturi tube (9) is fixed seal connection, the upper end of exhaust inlet tube (6) is stretched in the exhaust pipe of engine (8), exhaust inlet tube (6) and the exhaust pipe of engine (8) are connected for thread seal, the upper end of the lower end of exhaust inlet tube (6) and exhaust pressurizer tank (7) is for being welded to connect, the bottom face of exhaust pressurizer tank (7) adopts pipeline to be connected with the middle part thread seal of Venturi tube (9), the right-hand member of Venturi tube (9) adopts the upper end of bolt and No. 4 one-level dilution tunnel (10) to be sealedly and fixedly connected.
7. according to engine exhaust gas particulate dilution system claimed in claim 6, it is characterized in that, the right-hand member of described No. 3 one-level dilution tunnel (5) is that fixed seal connection refers to the left end of Venturi tube (9): the ring flange that No. 3 one-level dilution tunnel (5) right-hand member arranges is connected with the ring flange that Venturi tube (9) left end arranges, between the left end ring flange of the right-hand member ring flange of No. 3 one-level dilution tunnel (5) and Venturi tube (9), be placed with No. 1 silica gel sealing pad, the right-hand member ring flange of No. 3 one-level dilution tunnel (5), the left end ring flange of No. 1 silica gel sealing pad and Venturi tube (9) adopts bolt to fix, the right-hand member ring flange of fixing No. 3 one-level dilution tunnel (5), the periphery sealant sealing of the left end ring flange of No. 1 silica gel sealing pad and Venturi tube (9).
8. according to engine exhaust gas particulate dilution system claimed in claim 6, it is characterized in that, the right-hand member of described Venturi tube (9) adopts the upper end of bolt and No. 4 one-level dilution tunnel (10) to be sealedly and fixedly connected and refers to: the upper end of the right-hand member of Venturi tube (9) and No. 4 one-level dilution tunnel (10) is respectively arranged with ring flange, between the upper flanges dish of the right-hand member ring flange of Venturi tube (9) and No. 4 one-level dilution tunnel (10), be placed with No. 2 silica gel sealing pad, the right-hand member ring flange of Venturi tube (9), the upper flanges dish of No. 2 silica gel sealing pads and No. 4 one-level dilution tunnel (10) adopts bolt to fix, the right-hand member ring flange of fixing Venturi tube (9), the periphery sealant sealing of the upper flanges dish of No. 2 silica gel sealing pads and No. 4 one-level dilution tunnel (10).
9. according to engine exhaust gas particulate dilution system claimed in claim 1, it is characterized in that, described second level dilution part also comprises the sampling probe (19) that secondary air flowrate control valve (15) that No. 1 secondary dilution tunnel (14), model are DN-65, secondary high pressure vacuum blower fan (17) that model is DF-2, No. 3 secondary dilution tunnel (18) and model are EEPS3090;
Model is that the left end of the secondary air flowrate control valve (15) of DN-65 is connected with the right-hand member thread seal of No. 1 secondary dilution tunnel (14), model is that the right-hand member of the secondary air flowrate control valve (15) of DN-65 is connected with the left end thread seal of No. 2 secondary dilution tunnel (16), the left end thread seal of the secondary high pressure vacuum blower fan (17) that the right-hand member of No. 2 secondary dilution tunnel (16) is DF-2 with model is connected, model is that the right-hand member of the secondary high pressure vacuum blower fan (17) of DF-2 is connected with the left end thread seal of No. 3 secondary dilution tunnel (18), be provided with the threeway ring flange that three-way pipe (11) is installed in No. 2 secondary dilution tunnel (16) centre position, in No. 2 secondary dilution tunnel (16) on threeway ring flange right side, be provided with the one-level bypassing exhaust pipe flange that one-level exhaust shunt tube (13) is installed, in No. 2 secondary dilution tunnel (16) between threeway ring flange and one-level bypassing exhaust pipe flange, be provided with sampling probe interface, model is that the sampling probe (19) of EEPS3090 is that thread seal is connected with the sampling probe interface in No. 2 secondary dilution tunnel (16).
10. according to engine exhaust gas particulate dilution system claimed in claim 1, it is characterized in that, described first order dilution part, second level dilution part are all arranged in same level with all parts in one-level bypassing exhaust part;
No. 1 one-level dilution tunnel (1), No. 2 one-level dilution tunnel (3), No. 3 one-level dilution tunnel (5), No. 4 one-level dilution tunnel (10), one-level exhaust shunt tube (13), No. 1 secondary dilution tunnel (14), No. 2 secondary dilution tunnel (16), No. 3 secondary dilution tunnel (18) that in first order dilution part, second level dilution part and one-level bypassing exhaust part, adopt are cylindrical conduit with three-way pipe (11), and insides of pipes is coated with polytetrafluorethylecoatings coatings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420053411.2U CN203732345U (en) | 2014-01-27 | 2014-01-27 | Engine exhaust particulate diluting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420053411.2U CN203732345U (en) | 2014-01-27 | 2014-01-27 | Engine exhaust particulate diluting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203732345U true CN203732345U (en) | 2014-07-23 |
Family
ID=51202408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420053411.2U Expired - Fee Related CN203732345U (en) | 2014-01-27 | 2014-01-27 | Engine exhaust particulate diluting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203732345U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668762A (en) * | 2017-10-13 | 2019-04-23 | 株式会社堀场制作所 | Exhaust gas analyzer, exhaust gas analysis system, program storage medium and bearing calibration |
-
2014
- 2014-01-27 CN CN201420053411.2U patent/CN203732345U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109668762A (en) * | 2017-10-13 | 2019-04-23 | 株式会社堀场制作所 | Exhaust gas analyzer, exhaust gas analysis system, program storage medium and bearing calibration |
| US11592364B2 (en) | 2017-10-13 | 2023-02-28 | Horiba, Ltd. | Exhaust gas analysis apparatus, exhaust gas analysis system, exhaust gas measurement method, program recording medium recorded with program for exhaust gas analysis apparatus, and calibration method for exhaust gas analysis |
| CN109668762B (en) * | 2017-10-13 | 2023-07-04 | 株式会社堀场制作所 | Exhaust gas analysis device, exhaust gas analysis system, and program storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203824985U (en) | Gas pollutant measurement calibration system for draw-out flue gas emission monitoring | |
| WO2023185738A1 (en) | Air volume control damper capable of accurately measuring air volume | |
| CN207081601U (en) | A kind of simple aerosol diluter | |
| CN207081470U (en) | A kind of sonic nozzle calibrating installation | |
| CN203732345U (en) | Engine exhaust particulate diluting system | |
| CN203551272U (en) | Safety valve test and verification apparatus regulating pressure by use of pressure regulator | |
| CN110736601A (en) | mixed laminar flow control wind tunnel test system | |
| CN202330134U (en) | Diesel engine exhaust particulate grain distribution dilution system for vehicle | |
| CN207779516U (en) | A kind of natural gas big flow reality stream calibrating installation | |
| CN107051242A (en) | A kind of dynamic gas distribution instrument and its air distributing method | |
| CN103760003A (en) | Dilution system for engine exhaust gas particles | |
| CN205280306U (en) | Airtight inspection integrated console | |
| CN205388506U (en) | Circulating high -pressure gas flow rate standard facility | |
| CN204461840U (en) | A kind of PM2.5 source resolution sampling apparatus controlled based on gas concentration lwevel | |
| CN208043727U (en) | A kind of online dew-point detecting device of iron and steel enterprise's air compression system | |
| CN104502087B (en) | Pressure regulator testboard pneumatic means | |
| CN202015606U (en) | Air distribution instrument for air control test box | |
| CN206469920U (en) | A kind of distinguished and admirable measuring device | |
| CN205861140U (en) | A kind of gas-liquid two-phase mass flowmenter | |
| CN212254275U (en) | Gas flow standard device with high-low pressure double calibration sections | |
| CN208432372U (en) | Pressure maintaining valve quality detection work platform | |
| CN204338031U (en) | A kind of general air mix facilities | |
| CN209166602U (en) | Positive pressure method gas flow caliberating device | |
| CN208476364U (en) | A kind of apparatus for calibrating water meter | |
| CN105909974B (en) | The adjustment method of pipeline negative pressure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140723 Termination date: 20150127 |
|
| EXPY | Termination of patent right or utility model |