CN208705050U - A kind of engine crankcase discharge sampler - Google Patents
A kind of engine crankcase discharge sampler Download PDFInfo
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- CN208705050U CN208705050U CN201821609827.2U CN201821609827U CN208705050U CN 208705050 U CN208705050 U CN 208705050U CN 201821609827 U CN201821609827 U CN 201821609827U CN 208705050 U CN208705050 U CN 208705050U
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- tube
- exhaust pipe
- probe tube
- crankcase
- sampler
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Abstract
The utility model discloses a kind of engine crankcases to discharge sampler, including exhaust pipe, it further include the probe tube for being connected to the exhaust pipe with crankcase, the probe tube includes inner wall smooth and corrosion resistant inner tube, by the heating layer of said inner tube package and the protective layer for wrapping up said inner tube, heating layer, and the probe tube is equipped with the temperature controller being electrically connected with the heating layer；The probe tube both ends are respectively provided with the delivery temperature of detection crankcase and the first detection components, the second detection components of pressure at expulsion.The utility model can effectively meet the requirement of open crankcase scavenged test sampling, guarantee test result.
Description
Technical field
The utility model relates to engine detection technique fields, more specifically, it relates to which a kind of engine crankcase is arranged
Take sampling device.
Background technique
Country is increasingly stringenter the control of automobile exhaust pollutant discharge, starts to prevent and treat compression-ignited and gas ignition formula
Pollution of the automobile exhaust of machine to environment, improve air quality, on June 22nd, 2018 publication standard GB/T 17691-2018
" heavy-duty diesel vehicle pollutant emission limit and measurement method (Chinese 6th stage) " increases compression ignition engine in new standard
Open crankcase scavenged test request: crankcase scavenged is tested together with exhaust emissions.Currently without open song
The exhaust gas sampling pipeline of axle box emission test, six engine of state are unable to measure open crankcase scavenged in the process of development.
Existing engine exhaust sampling line is unable to satisfy following test request: 1, pipeline is smooth, and discord crankcase is dirty
Contaminate object reaction；2, pipeline can heat, and wall is thin or insulate；3, pipeline No leakage.Therefore, it is badly in need of being able to satisfy the use of above-mentioned test request
In the device of engine crankcase discharge sampling.
Utility model content
The technical problems to be solved in the utility model is the above-mentioned deficiency for the prior art, and the utility model provides one kind
The engine crankcase discharge sampling dress that the requirement of open crankcase scavenged test sampling can effectively be met, guarantee test result
It sets.
Technical scheme of the utility model is as follows: a kind of engine crankcase discharges sampler, including exhaust pipe,
It further include the probe tube for being connected to the exhaust pipe with crankcase, the probe tube includes inner wall smooth and corrosion resistant interior
The heating layer of said inner tube package and the protective layer for wrapping up said inner tube, heating layer, the probe tube are equipped with by pipe
The temperature controller being electrically connected with the heating layer；The probe tube both ends are respectively provided with the delivery temperature of detection crankcase
The first detection components, the second detection components with pressure at expulsion.
As a further improvement, first detection components include the first connection connecting with described probe tube one end
It manages, is successively arranged the first temperature sensor, the first shut-off valve, first pressure sensor in first connecting tube, wherein institute
The first pressure sensor stated is close to the probe tube.
Further, the first described connecting tube one end is equipped with the connector for connecting the exhaust pipe of the crankcase.
Further, second detection components include the second connecting tube connecting with the probe tube other end, institute
The second shut-off valve, second temperature sensor, second pressure sensor are successively arranged in the second connecting tube stated, wherein described
Second shut-off valve is close to the probe tube.
Further, second connecting tube is inserted into the exhaust pipe orifice, positioned at the second of the exhaust pipe orifice
Connecting tube one end is equipped with bend pipe, and the bend pipe is located at the center of the exhaust pipe orifice and flows to along the exhaust of the exhaust pipe
Extend.
Further, second connecting tube is equipped with the flange connecting with the exhaust pipe.
Further, heater wire, the third temperature sensor connecting with the temperature controller are equipped in the heating layer.
Beneficial effect
The utility model compared with prior art, has the advantage that are as follows:
1, by setting inner wall smooth and corrosion resistant inner tube, accumulation of pollutants can be effectively reduced, improve probe tube
Working life is arranged heating layer to inner tube heated at constant temperature, can prevent exhausted by crankcase from condensing, and reduces accumulation of pollutants and makes
At loss, setting the first detection components, the second detection components can with real-time detection probe tube both ends turn inward axle box exhaust temperature
Degree and pressure at expulsion, the temperature difference and pressure difference for preventing probe tube both ends to be vented are excessive and pollute object deposition, while can also examine
Survey the air-tightness of probe tube；
2, bend pipe is located at the center of exhaust pipe orifice and extends along exhaust flow direction, can make crankshaft to avoid effect of boundary layer
Case exhaust can be sufficiently mixed with engine exhaust, to collect representational sample gas when discharging detection；
3, by heater wire, temperature controller, third temperature sensor formation temperature closed-loop control, constant temperature can be carried out to inner tube
Heating, improves the sampling effect of probe tube.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the cross section structure schematic diagram of probe tube in the utility model.
Wherein: 1- exhaust pipe, 2- probe tube, 3- inner tube, 4- heating layer, 5- protective layer, 6- temperature controller, the connection of 7- first
Pipe, the first temperature sensor of 8-, the first shut-off valve of 9-, 10- first pressure sensor, 11- connector, the second connecting tube of 12-, 13-
Second shut-off valve, 14- second temperature sensor, 15- second pressure sensor, 16- bend pipe, 17- flange.
Specific embodiment
Specific embodiment in reference to the accompanying drawing is described further the utility model.
Refering to fig. 1-2, a kind of engine crankcase discharges sampler, including exhaust pipe 1, exhaust pipe 1 and engine
Exhaust outlet connection, further includes the probe tube 2 for being connected to exhaust pipe 1 with crankcase, and probe tube 2 includes inner wall smooth and corrosion resistant
Heating layer 4 and the protective layer 5 for wrapping up inner tube 3, heating layer 4, probe tube 2 that inner tube 3 is wrapped up are equipped with and are added by inner tube 3
The temperature controller 6 that thermosphere 4 is electrically connected；2 both ends of probe tube are respectively provided with the delivery temperature and pressure at expulsion of detection crankcase
The first detection components, the second detection components；Preferably, 3 material of inner tube is 304SS material bellows, flexibly it is bent, it is convenient
Accumulation of pollutants can be effectively reduced in installation, inner wall polishing treatment, has corrosion-resistant well, the work longevity of raising probe tube 2
Life；Heating layer 4 is set to 3 heated at constant temperature of inner tube, in the present embodiment, inner tube 3 carries out thermostatic control 190 by temperature controller 6
It ± 10 DEG C, can prevent exhausted by crankcase from condensing, reduce and lost caused by accumulation of pollutants；Protective layer 5 is by fire-retardant, heat preservation
Material is made, degree of protection IP21, can improve 2 job stability of probe tube with effective protection inner tube 3, heating layer 4；Setting
First detection components, the second detection components can turn inward the delivery temperature and pressure at expulsion of axle box with 2 both ends of real-time detection probe tube,
The temperature difference and pressure difference for preventing 2 both ends of probe tube to be vented are excessive and pollute object deposition, while can also detect the gas of probe tube
Close property.
First detection components include the first connecting tube 7 connecting with 2 one end of probe tube, are successively arranged in the first connecting tube 7
First temperature sensor 8, the first shut-off valve 9, first pressure sensor 10, wherein first pressure sensor 10 is close to probe tube
2,7 one end of the first connecting tube is equipped with the connector 11 for connecting the exhaust pipe of crankcase, and connector 11 is modular connection G1-1/2F,
The first connecting tube 7 is facilitated quickly to connect or dismantle with the exhaust pipe of crankcase, air-tightness is good；Second detection components include and sampling
Second connecting tube 12 of 2 other end of pipe connection, is successively arranged the second shut-off valve 13, second temperature sensor in the second connecting tube 12
14, second pressure sensor 15, wherein the second shut-off valve 13 is close to probe tube 2；First temperature sensor 8, second temperature sensing
Device 14 is respectively used to the delivery temperature of detection 2 both ends of probe tube introversion axle box, first pressure sensor 10, second pressure sensor
15 are respectively used to the pressure at expulsion of detection 2 both ends of probe tube introversion axle box, and in the present embodiment, 2 both ends of probe tube turn inward axle box
Delivery temperature it is almost the same, 2 both ends of probe tube turn inward axle box pressure at expulsion difference be less than 0.5kPa, prevent exhausted by crankcase from going out
It now condenses, improves sampling effect；First temperature sensor 8, first pressure sensor 10 are logical to be threaded in the first connecting tube 7
On, second temperature sensor 14, second pressure sensor 15 are logical to be threaded in the second connecting tube 12, the model 1/ of screw thread
8 inside tapered threads, air-tightness are good；First shut-off valve 9 and the second shut-off valve 13 for control exhausted by crankcase enter with cut-off, also use
In to 2 leak detection of probe tube, the process of leak detection is: closing the first shut-off valve 9 and the second shut-off valve 13, utilizes installation the
The screw hole of one pressure sensor 10 evacuates probe tube 2, until vacuum degree reaches 5kPa (absolute pressure 95kPa), 1 minute after stablizing
The pressure increase △ P of interior probe tube 2 should be no more than: P=P/VS × 0.005 △ × QBL, and in formula, P is vacuum degree (kPa), and VS is
Probe tube volume (L), QBL are engine crankcase air leakage maximum value (L/min).
Second connecting tube 12 is inserted into 1 inner hole of exhaust pipe, is equipped with bend pipe positioned at 12 one end of the second connecting tube of 1 inner hole of exhaust pipe
16, bend pipe 16, which is located at the center of 1 inner hole of exhaust pipe and flows to along the exhaust of exhaust pipe 1, to be extended, and can be made to avoid effect of boundary layer
Exhausted by crankcase can be sufficiently mixed with engine exhaust, so that representational sample gas can be collected when discharging detection, second
Connecting tube 12 is equipped with the flange 17 connecting with exhaust pipe 1, the convenient installation to the second connecting tube 12, also, exhaust pipe 1 and method
Air-tightness between orchid 17 is good.
The hole size of second connecting tube 12 is less than the hole size of inner tube 3, can make inner tube 3 and the second connecting tube 12 it
Between form pressure difference, improve the exhaust flow rate of the second connecting tube 12 introversion axle box, can be with when the exhaust of crankcase is sprayed from bend pipe 16
It is sufficiently mixed with engine exhaust, improves sampling effect.
The diameter of inner tube 3 is not less than 1.5 inches (38.1mm), can meet exhausted by crankcase flow in 0~180L/min,
Engine crankcase pressure gain is not more than 2kPa, not only can guarantee that probe tube 2 carried out efficient sampling, but also do not influence crankcase just
Often work.
Heater wire, the third temperature sensor connecting with temperature controller 6 are equipped in heating layer 4, heating layer 4 further includes that will heat
The thermal insulation material of line covering, reduces thermal loss, improves heating efficiency, reduces energy consumption, in the present embodiment, third temperature sensing
Device is the temperature sensor of model PT100, and control is simple, and stability is high, and precision is high；Heater wire, temperature controller 6, third temperature
Sensor formation temperature closed-loop control can carry out heated at constant temperature to inner tube, improve the sampling effect of probe tube.
Above-described is only preferred embodiments of the present invention, it should be pointed out that is come for those skilled in the art
It says, under the premise of not departing from the utility model structure, several modifications and improvements can also be made, these all will not influence this reality
With the effect and patent practicability of novel implementation.
Claims (7)
1. a kind of engine crankcase discharges sampler, including exhaust pipe (1), it is characterised in that: further include by the exhaust
The probe tube (2) that pipe (1) is connected to crankcase, the probe tube (2) include inner wall smooth and corrosion resistant inner tube (3), incite somebody to action
The heating layer (4) of said inner tube (3) package and the protective layer (5) for wrapping up said inner tube (3), heating layer (4), described takes
Sample pipe (2) is equipped with the temperature controller (6) being electrically connected with the heating layer (4)；Described probe tube (2) both ends are respectively equipped with use
In the delivery temperature of detection crankcase and the first detection components, the second detection components of pressure at expulsion.
2. a kind of engine crankcase according to claim 1 discharges sampler, it is characterised in that: first inspection
Surveying component includes the first connecting tube (7) connecting with the probe tube (2) one end, is successively set in first connecting tube (7)
There are the first temperature sensor (8), the first shut-off valve (9), first pressure sensor (10), wherein the first pressure sensing
Device (10) is close to the probe tube (2).
3. a kind of engine crankcase according to claim 2 discharges sampler, it is characterised in that: described first connects
(7) one end is taken over equipped with the connector (11) for connecting the exhaust pipe of the crankcase.
4. a kind of engine crankcase according to claim 1 discharges sampler, it is characterised in that: second inspection
Surveying component includes the second connecting tube (12) connecting with the probe tube (2) other end, in second connecting tube (12) according to
It is secondary to be equipped with the second shut-off valve (13), second temperature sensor (14), second pressure sensor (15), wherein described second section
Only valve (13) is close to the probe tube (2).
5. a kind of engine crankcase according to claim 4 discharges sampler, it is characterised in that: described second connects
It takes over (12) and is inserted into exhaust pipe (1) inner hole, be located at the second connecting tube (12) one end of the exhaust pipe (1) inner hole equipped with curved
It manages (16), the bend pipe (16) is located at the center of the exhaust pipe (1) inner hole and prolongs along the exhaust of the exhaust pipe (1) flow direction
It stretches.
6. a kind of engine crankcase according to claim 4 discharges sampler, it is characterised in that: described second connects
Adapter tube (12) is equipped with the flange (17) connecting with the exhaust pipe (1).
7. a kind of engine crankcase discharge sampler described in -6 any one according to claim 1, it is characterised in that: institute
Heater wire, the third temperature sensor connecting with the temperature controller (6) are equipped in the heating layer (4) stated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821609827.2U CN208705050U (en) | 2018-09-30 | 2018-09-30 | A kind of engine crankcase discharge sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821609827.2U CN208705050U (en) | 2018-09-30 | 2018-09-30 | A kind of engine crankcase discharge sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208705050U true CN208705050U (en) | 2019-04-05 |
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ID=65947840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821609827.2U Active CN208705050U (en) | 2018-09-30 | 2018-09-30 | A kind of engine crankcase discharge sampler |
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| CN (1) | CN208705050U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956151A (en) * | 2018-09-30 | 2018-12-07 | 广西玉柴机器股份有限公司 | A kind of engine crankcase discharge sampler |
-
2018
- 2018-09-30 CN CN201821609827.2U patent/CN208705050U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956151A (en) * | 2018-09-30 | 2018-12-07 | 广西玉柴机器股份有限公司 | A kind of engine crankcase discharge sampler |
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