CN206420514U - A kind of vehicle exhaust sensed flow meter - Google Patents
A kind of vehicle exhaust sensed flow meter Download PDFInfo
- Publication number
- CN206420514U CN206420514U CN201720068638.8U CN201720068638U CN206420514U CN 206420514 U CN206420514 U CN 206420514U CN 201720068638 U CN201720068638 U CN 201720068638U CN 206420514 U CN206420514 U CN 206420514U
- Authority
- CN
- China
- Prior art keywords
- vehicle exhaust
- flow meter
- flow
- electric box
- shell
- 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
- 238000012360 testing method Methods 0.000 claims abstract description 38
- 238000009413 insulation Methods 0.000 claims abstract description 4
- 239000000523 sample Substances 0.000 claims description 48
- 238000001816 cooling Methods 0.000 claims description 22
- 238000009530 blood pressure measurement Methods 0.000 claims description 17
- 238000001035 drying Methods 0.000 claims description 13
- 230000008676 import Effects 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 8
- 238000007689 inspection Methods 0.000 claims description 7
- 239000012528 membrane Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000004078 waterproofing Methods 0.000 claims description 7
- 238000005070 sampling Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 claims description 3
- 238000000605 extraction Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 7
- 238000004378 air conditioning Methods 0.000 abstract description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 26
- 238000005259 measurement Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000004308 accommodation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a kind of vehicle exhaust sensed flow meter.Including test flow body and flow electric box, sample tap, temperature sensor and differential manometer are provided with wherein described test flowtube body, the sample tap, temperature sensor and differential manometer are connected to the flow electric box by connecting tube bank, vehicle exhaust test device is provided with the flow electric box, the connection tube bank outside is provided with heat-insulation layer.The utility model only needs to test flow body being installed on automobile exhaust pipe, and convenient and flexible installation is lightweight, will not cause to be broken at sample tap；Extension effect of the flow electric box by connecting tube bank in the utility model can be placed in in-car, add the reliability of electronic section, avoid the rainy day and watering vehicle testing when because dabble electron tape risk, interior environment is stablized relatively, and temperature further can also be controlled by in-car air-conditioning.
Description
Technical field
The utility model is related to vehicle exhaust measuring technology, specifically, is a kind of vehicle exhaust sensed flow meter.
Background technology
With the issue of the Abgasgesetz of Light-duty Vehicle state six, the Light-duty Vehicle for the discharge standard of state six needs to carry out real road
RDE（Real-raod Driving Emission, real road drives discharge）Emission test, wherein requiring using outside stream
Gauge tests the flow of vehicle exhaust.The emission test standard of heavy goods vehicles state six will also be issued, and similarly require the actual road of vehicle
Road emission test.
The vehicle exhaust sensed flow meter that current main-stream equipment supplier provides all is the principle using averaging pitot tube, row
Temperature difference measurements are measured using two temperature probes using multiple differential pressure pickups, can be with accurately measure car tail air-flow
Amount, and with heating and filtering gas sampled, the function of preventing gas from being condensed in blast pipe；With low temperature dew point detection function,
The advantages of sample tap blow-back cleaning function and leak detection.But existing vehicle exhaust sensed flow meter have it is following
Problem：1）Exhaust flow test coupon is integrally heavier, is difficult to install and use；2）When low-temperature region works, outside equipment
Portion's environment temperature reduction is too fast, and equipment interior circuit board temperature is higher, is easily caused condensate liquid point on circuit board during air ambient to the cold and produces
It is raw, so as to cause circuit board damage；3）Relatively low additionally, due to classification of waterproof, circuit board is in rainy day surface gathered water environment and watering
When being tested on vehicle, the water capacity easily splashes in flowmeter outer box and then penetrates into inside, and vehicle, which jolts, in addition easily sheds circuit
It is caused to damage on plate；4）Because the electronic box part accumulation function on flow rate test body excessively causes hardware integration more,
Cause electronic box heavier, may cause and be broken at the sample tap on test exhaust pipe；5）Differential pressure pickup is light-duty
Car is in use, due to not high enough with Light-duty Vehicle actual flow test flow matches degree, be also easily caused the waste of hardware resource.
Utility model content
The technical problems to be solved in the utility model be to provide it is a kind of it is light it is easy use, security reliability is good, cost is low
Vehicle exhaust sensed flow meter.
In order to solve the above-mentioned technical problem, the utility model provides a kind of vehicle exhaust sensed flow meter, and its feature exists
In, including test flow body and flow electric box, wherein in the test flowtube body provided with sample tap, temperature sensor and
Differential manometer pressure measurement collector, the sample tap, temperature sensor and differential manometer pressure measurement collector are by connecting tube bank connection
To the flow electric box, vehicle exhaust test device is provided with the flow electric box, the connection tube bank outside is provided with
Heat-insulation layer.
Further, the temperature sensor includes the first temperature probe and second temperature probe, and first temperature is visited
Pin and second temperature probe are separately positioned on the both sides of the differential manometer pressure measurement collector.
Further, the flow electric box include shell, the shell be provided with sample gas import, the sample gas import according to
The secondary hot filtration apparatus being connected in shell, convolution cooling tube, micro cooler, cyclone separator, condenswater separator, sampling
Pump, membrane dryer, adjustable flow needle-valve and solenoid valve block, the solenoid valve block are connected to gas circuit and circuit interface, the gas
Road and circuit interface are connected to external main frame.
Further, the solenoid valve block is also connected to the sample gas import, and it is poor that the solenoid valve block is also connected to pressure measurement
Sensor circuit board, the pressure measurement gap sensor circuit board is connected to control board.
Further, it is respectively equipped with load cell on membrane dryer and the adjustable flow needle-valve.
Further, the solenoid valve block is also associated with missing inspection air inlet socket.
Further, GPS and environmental monitoring temperature humidity signal plug are also integrated with the missing inspection air inlet socket.
Further, drying box is additionally provided with the inside of the shell, is provided between the drying box and housing interior volume
Transom, is provided with hermatic door between the drying box and housing exterior space.
Further, the convolution cooling tube side, which is provided with cooling fan, the shell, is additionally provided with extraction fan.
Further, the shell includes housing and cover plate, and the shell rim is provided with waterproof extension side, the cover plate
Seal groove is provided with, provided with sealing silica gel strip between the waterproof extension side and seal groove, is passed through between the cover plate and housing
Waterproofing screw is fastened；The housing at least side is provided with water bar, and sealing ring is provided between the water bar and housing, and
It is fixed to by waterproofing screw on the housing.
Vehicle exhaust sensed flow meter of the present utility model, it is only necessary to which test flow body is installed to automobile exhaust pipe
On, convenient and flexible installation is lightweight, will not cause to be broken at sample tap；Flow electric box in the utility model passes through connection
The extension effect of tube bank can be placed in in-car, add the reliability of electronic section, it is to avoid rainy day and watering vehicle testing
Shi Yin dabble electron tape come risk, interior environment relatively stablize, temperature can also further pass through in-car air-conditioning
It is controlled；In addition, the utility model uses single functional module, the accommodation space of equipment component is correspondingly increased,
Installing space has been preset for the more preferable parts of performance.
Brief description of the drawings
Fig. 1 is the schematic diagram of test flow body portion in vehicle exhaust sensed flow meter of the present utility model.
Fig. 2 is the schematic diagram of flow electric box part in vehicle exhaust sensed flow meter of the present utility model.
Fig. 3 is the schematic diagram of flow electric box Shell structure in vehicle exhaust sensed flow meter of the present utility model.
Fig. 4 is flow electric box shell side structure schematic diagram in vehicle exhaust sensed flow meter of the present utility model.
Embodiment
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings, so that those skilled in the art
The utility model may be better understood and can be practiced, but illustrated embodiment is limited not as to of the present utility model.
As depicted in figs. 1 and 2, an embodiment of vehicle exhaust sensed flow meter of the present utility model, including test flow
Body 100 and flow electric box 200, wherein being provided with sample tap 104, temperature sensor and pressure in the test flow body 100
Difference measurement pressure collector 102, the sample tap 104, temperature sensor and differential manometer pressure measurement collector 102 pass through connecting tube
Beam 105 is connected in the flow electric box 200, the flow electric box 200 and is provided with vehicle exhaust test device, the company
Heat-insulation layer is provided with the outside of adapter beam.
As shown in figure 1, the temperature sensor includes the first temperature probe 101 and second temperature probe 103, described first
Temperature probe 101 and second temperature probe 103 are separately positioned on the both sides of the differential manometer pressure measurement collector 102.And sample
Mouth 104 is arranged on the downstream of second temperature probe 103.
As shown in Fig. 2 the flow electric box 200 includes shell 201, the shell 201 is provided with sample gas import 221,
The sample gas import 221 is consecutively connected to hot filtration apparatus 224 in shell 201, convolution cooling tube 203, micro cooler
223rd, cyclone separator 219, condenswater separator 218, sampling pump 216, membrane dryer 215, adjustable flow needle-valve 207 and electricity
Magnet valve group 206, the solenoid valve block 206 is connected to pressure measurement gap sensor circuit board 208, the pressure measurement gap sensor circuit board
208 are connected to control board 214.
Using the test collection vehicle exhaust of flow body 100, the sample tap 104 installed in body will be conveyed after exhaust sampling
To flow electric box 200, and the first temperature probe 101 and second temperature probe 103 convey the delivery temperature parameter detected
To flow electric box 200, the pressure difference parameter detected is transported to flow electric box 200 by differential manometer pressure measurement collector 102.
Flow electric box 200 by sample gas import 221 receive by test flow body 100 convey come sample gas, a part
The heated filter 224 of sample gas heats and filters out the particulate matter in sample gas, then is tentatively cooled down through the cooling tube 203 that circles round,
Then further cooled down by micro cooler 223, the sample gas after cooling is through cyclone separator 219, by the condensing droplet in sample gas
Discharged by condenswater separator 218, sample gas, which enters on sampling pump 216, condenswater separator 218, is connected with magnetic valve 217.Adopt
Sample pneumatic transmission is entered hollow fiber film type drier 215 by sample pump 216, the gaseous state moisture in sample gas is removed using dry source of the gas, then
Solenoid valve block 206 is transported to through adjustable flow needle-valve 207, it is complete by external main frame FEM209 finally to gas circuit and circuit interface 210
The CO/CO into vehicle exhaust2Etc. the measurement of each gas adult.
In addition, some in the sample gas that sample gas import 221 is received is directly output to solenoid valve block 206 respectively, by with
The connected pressure measurement gap sensor circuit board 208 of solenoid valve block 206 and the control circuit being connected with pressure measurement gap sensor circuit board 208
Plate 214, carries out the measurement of automobile exhaust percussive pressure, static pressure and upstream air pressure, and calculates the extraction flow of automobile.
Preferably, missing inspection air inlet socket 205 is provided with shell 201.Unidirectional gas is coordinated by missing inspection air inlet socket 205
Road stop valve can be filled with not oxygen-containing gas into solenoid valve block 206, then be detected whether by external main frame FEM containing aerobic
Gas, if so, explanation solenoid valve block has gas leak phenomenon, otherwise illustrates good seal.Can be with integrated on missing inspection air inlet socket 205
GPS and environmental monitoring temperature humidity signal access socket.
Preferably, load cell is respectively equipped with the membrane dryer 215 and adjustable flow needle-valve 207, it is right respectively
Sample atmospheric pressure in membrane dryer and adjustable flow needle-valve is measured, to adjust the opening amount of adjustable flow needle-valve 207.
Preferably, the inner side of the shell 201 is additionally provided with drying box 212, the drying box 212 and housing interior volume it
Between be provided with transom 213, between the drying box 212 and housing exterior space be provided with hermatic door 211.Open hermatic door 211 to
Drier is put into drying box 212, then the drier that hermatic door 211 is closed in sealing, drying box 212 passes through transom 213
The moisture in flow electric box is absorbed, keeps drying in flow electric box, with the safety of protection circuit plate and other parts.
Pumping is additionally provided with furthermore it is possible to be provided with convolution cooling tube 203 side on cooling fan 202, the shell
Fan 222.To promote air circulation, cooling effect is lifted.Measurement workspace that can also be in flow electric box and bosher
Make to set dividing plate 204 between area, it is preferred to use metal partion (metp), two workspaces are isolated, it is to avoid interfere.
As shown in figure 3, in order to realize good sealing, the shell includes housing 301 and cover plate 302, the housing side
Edge is provided with waterproof extension side 304, and the cover plate 302 is provided with seal groove 305, the waterproof extension side 304 and seal groove 305
Between provided with sealing silica gel strip 303, fastened between the cover plate 302 and housing 301 by waterproofing screw.As shown in figure 4, described
Housing at least side is provided with water bar 401, and water bar 401 is generally located on the position of correspondence drying box 212.The waterproof
Sealing ring 402 is provided between baffle plate 401 and housing, and is fixed to by waterproofing screw on the housing.
Vehicle exhaust flow rate test pipe of the present utility model, one is passed to individually and testing tube by active functions module
In the electronic box of body separation, the normal function of existing flow rate test pipe was both inherited, its shortcoming, such as volume mistake is turn avoid
Greatly, test flow body load-bearing is excessive etc..
Flow rate test pipe structure after the utility model is improved is simple, and 1）It is easy to do air-tightness and water-proofing treatment；2）Subtract
Flowtube dimension volume is lacked, flexibility and installability when adding installation；3）Feature reduction is not done；4）It is newly-designed
Electronic box part can be placed in compartment, correspondingly increase the reliability of electronic section, it is to avoid rainy day and watering vehicle
Because the risk that the electron tape that dabbles comes, interior environment are stablized relatively during test, temperature can also further pass through in-car
Air-conditioning is controlled；5）Single functional module, correspondingly increases the accommodation space of equipment component, is that performance is more preferable
Parts preset installing space.
The utility model adds micro cooler after cooling fan, convolution cooling tube are added before convolution cooling tube,
Improve cooling effect.If vehicle is not moved in the prior art, convolution cooling tube because air cooling effect difference and cooling effect again
It is not ideal, thus the utility model for convolution cooling tube add cooling fan and micro cooler further ensure cooling effect
Really.In addition, dress flowtube is in low temp area in the prior art, convolution cooling tube in environment temperature because once occurring intraluminal fluid
Drop, which freezes, blocks the phenomenon of sample lines, and the flowtube electronic box after the utility model is improved can be placed in the car, now
The problem of intraluminal fluid drop icing can be reduced.
The utility model also optimizes the quantitative design of differential pressure pickup.Differential pressure pickup is 4 ranges in the prior art
The differential pressure pickup of scope, the test flowtube of the corresponding different caliber sizes of different flow rate test scopes, various sizes of stream
The corresponding vehicle of buret is distributed as Light-duty Vehicle, in-between car and heavy goods vehicles, but used less than at all for Light-duty Vehicle manufacturer respectively
The range of flow of medium-sized and heavy goods vehicles test flowtube tests, if 4 differential pressure pickups are now configured, in light-duty vehicle flowrate
There is one to two differential pressure pickup to be constantly in off position during test, the configuration of this operative sensor comes to buying resource
Say it is a kind of waste, for being reduced to two differential pressure pickups for the flowtube that Light-duty Vehicle is used in the utility model, flow
Averaged during measurement, or flow measurement is carried out using a sensor, another sensor is measured as standby stream
Amount.
Embodiment described above is only the preferred embodiment to absolutely prove the utility model and being lifted, the utility model
Protection domain not limited to this.Equivalent substitute or change that those skilled in the art are made on the basis of the utility model
Change, within protection domain of the present utility model.Protection domain of the present utility model is defined by claims.
Claims (10)
1. a kind of vehicle exhaust sensed flow meter, it is characterised in that including test flow body and flow electric box, wherein described
Test and sample tap, temperature sensor and differential manometer pressure measurement collector, the sample tap, temperature sensor are provided with flowtube body
It is connected to differential manometer pressure measurement collector in the flow electric box, the flow electric box by connecting tube bank and is provided with vapour
Tail gas test device, the connection tube bank outside is provided with heat-insulation layer.
2. vehicle exhaust sensed flow meter as claimed in claim 1, it is characterised in that the temperature sensor includes the first temperature
Probe and second temperature probe are spent, first temperature probe and second temperature probe are separately positioned on the differential manometer pressure measurement and taken
The both sides of device of air.
3. vehicle exhaust sensed flow meter as claimed in claim 1, it is characterised in that the flow electric box includes shell,
The shell is provided with sample gas import, and the sample gas import is consecutively connected to hot filtration apparatus in shell, convolution cooling tube, micro-
Type cooler, cyclone separator, condenswater separator, sampling pump, membrane dryer, adjustable flow needle-valve and solenoid valve block, institute
State solenoid valve block and be connected to gas circuit and circuit interface, the gas circuit and circuit interface are connected to external main frame.
4. vehicle exhaust sensed flow meter as claimed in claim 3, it is characterised in that the solenoid valve block is also connected to described
Sample gas import, the solenoid valve block is also connected to pressure measurement gap sensor circuit board, and the pressure measurement gap sensor circuit board is connected to
Control board.
5. vehicle exhaust sensed flow meter as claimed in claim 3, it is characterised in that the membrane dryer and adjustable flow
Load cell is respectively equipped with needle-valve.
6. vehicle exhaust sensed flow meter as claimed in claim 3, it is characterised in that the solenoid valve block is also associated with missing inspection
Air inlet socket.
7. vehicle exhaust sensed flow meter as claimed in claim 6, it is characterised in that also integrated on the missing inspection air inlet socket
There are GPS and environmental monitoring temperature humidity signal plug.
8. vehicle exhaust sensed flow meter as claimed in claim 3, it is characterised in that be additionally provided with drying on the inside of the shell
Box, is provided with transom between the drying box and housing interior volume, provided with close between the drying box and housing exterior space
Closure door.
9. vehicle exhaust sensed flow meter as claimed in claim 3, it is characterised in that the convolution cooling tube side is provided with drop
Warm air is fanned, and extraction fan is additionally provided with the shell.
10. vehicle exhaust sensed flow meter as claimed in claim 3, it is characterised in that the shell includes housing and cover plate,
The shell rim is provided with waterproof extension side, and the cover plate is provided with seal groove, between the waterproof extension side and seal groove
Provided with sealing silica gel strip, fastened between the cover plate and housing by waterproofing screw；The housing at least side is kept off provided with waterproof
Plate, is provided with sealing ring, and be fixed on the housing by waterproofing screw between the water bar and housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720068638.8U CN206420514U (en) | 2017-01-20 | 2017-01-20 | A kind of vehicle exhaust sensed flow meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720068638.8U CN206420514U (en) | 2017-01-20 | 2017-01-20 | A kind of vehicle exhaust sensed flow meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206420514U true CN206420514U (en) | 2017-08-18 |
Family
ID=59572632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720068638.8U Expired - Fee Related CN206420514U (en) | 2017-01-20 | 2017-01-20 | A kind of vehicle exhaust sensed flow meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206420514U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113375740A (en) * | 2020-12-30 | 2021-09-10 | 南京瑞杨医用科技有限公司 | Medical center oxygen supply flow monitoring system |
-
2017
- 2017-01-20 CN CN201720068638.8U patent/CN206420514U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113375740A (en) * | 2020-12-30 | 2021-09-10 | 南京瑞杨医用科技有限公司 | Medical center oxygen supply flow monitoring system |
| CN113375740B (en) * | 2020-12-30 | 2024-04-26 | 南京瑞杨医用科技有限公司 | Medical central oxygen supply flow monitoring system |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170818 |
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| CF01 | Termination of patent right due to non-payment of annual fee |